0 33397043 Whole Exome Sequencing Identifies Novel Genetic Alterations in Patients with Pheochromocytoma/Paraganglioma Pheochromocytoma and paragangliomas (PPGL) are known as tumors with the highest level of heritability, approximately 30% of all cases. ('paragangliomas', 'Phenotype', 'HP:0002668', (129, 143)) ('paraganglioma', 'Phenotype', 'HP:0002668', (129, 142)) ('Genetic Alterations', 'Var', (40, 59)) ('tumors', 'Disease', (164, 170)) ('Pheochromocytoma/Paraganglioma', 'Disease', (77, 107)) ('tumors', 'Disease', 'MESH:D009369', (164, 170)) ('tumors', 'Phenotype', 'HP:0002664', (164, 170)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (108, 124)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (94, 107)) ('Pheochromocytoma/Paraganglioma', 'Disease', 'MESH:D010673', (77, 107)) ('Patients', 'Species', '9606', (63, 71)) ('Pheochromocytoma and paragangliomas', 'Disease', 'MESH:D010673', (108, 143)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (77, 93)) 1 33397043 Clinical practice guidelines of PPGL recommend genetic testing for germline variants in all patients. ('PPGL', 'Gene', (32, 36)) ('patients', 'Species', '9606', (92, 100)) ('germline variants', 'Var', (67, 84)) 2 33397043 Thirty-six tested negative for pathogenic variants in previous Sanger sequencing or targeted gene panel testing for PPGL underwent whole exome sequencing. ('PPGL', 'Gene', (116, 120)) ('variants', 'Var', (42, 50)) ('S', 'Chemical', 'MESH:D013455', (63, 64)) 5 33397043 Among previously mutation undetected 36 patients, two likely pathogenic variants and 13 variants of uncertain significance (VUS) were detected in 32 pheochromocytoma-related genes. ('pheochromocytoma', 'Disease', (149, 165)) ('patients', 'Species', '9606', (40, 48)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (149, 165)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (149, 165)) ('pathogenic', 'Reg', (61, 71)) ('variants', 'Var', (72, 80)) ('S', 'Chemical', 'MESH:D013455', (126, 127)) 6 33397043 SDHA c.778G>A (p.Gly260Arg) was detected in a patient with head and neck paraganglioma, and KIF1B c.2787-2A>C in a patient with a bladder paraganglioma. ('bladder paraganglioma', 'Disease', 'MESH:D001745', (130, 151)) ('patient', 'Species', '9606', (46, 53)) ('p.Gly260Arg', 'Mutation', 'rs940845256', (15, 26)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (68, 86)) ('SDHA', 'Gene', (0, 4)) ('paraganglioma', 'Phenotype', 'HP:0002668', (138, 151)) ('neck paraganglioma', 'Disease', (68, 86)) ('c.778G>A', 'Var', (5, 13)) ('c.2787-2A>C', 'Var', (98, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (73, 86)) ('c.2787-2A>C', 'Mutation', 'c.2787-2A>C', (98, 109)) ('bladder paraganglioma', 'Disease', (130, 151)) ('KIF1B', 'Gene', (92, 97)) ('SDHA', 'Gene', '6389', (0, 4)) ('c.778G>A', 'Mutation', 'rs940845256', (5, 13)) ('patient', 'Species', '9606', (115, 122)) ('KIF1B', 'Gene', '23095', (92, 97)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (59, 86)) 7 33397043 Additionally, a likely pathogenic variant in BRCA2, VUS in TP53, and VUS in NFU1 were detected. ('NFU1', 'Gene', (76, 80)) ('BRCA2', 'Gene', (45, 50)) ('TP53', 'Gene', (59, 63)) ('BRCA2', 'Gene', '675', (45, 50)) ('NFU1', 'Gene', '27247', (76, 80)) ('S', 'Chemical', 'MESH:D013455', (54, 55)) ('S', 'Chemical', 'MESH:D013455', (71, 72)) ('pathogenic', 'Reg', (23, 33)) ('variant', 'Var', (34, 41)) ('TP53', 'Gene', '7157', (59, 63)) 8 33397043 Exome sequencing further identified genetic alterations by 5.6% in previously mutation undetected patients in PPGL. ('genetic alterations', 'Var', (36, 55)) ('PPGL', 'Gene', (110, 114)) ('patients', 'Species', '9606', (98, 106)) 12 33397043 Another cluster is the kinase signaling group, consisting of germline or somatic variants in RET, NF1, HRAS, MAX, and TMEM127. ('HRAS', 'Gene', '3265', (103, 107)) ('germline', 'Var', (61, 69)) ('TMEM127', 'Gene', (118, 125)) ('HRAS', 'Gene', (103, 107)) ('RET', 'Gene', '5979', (93, 96)) ('TMEM127', 'Gene', '55654', (118, 125)) ('NF1', 'Gene', (98, 101)) ('NF1', 'Gene', '4763', (98, 101)) ('RET', 'Gene', (93, 96)) 13 33397043 The third cluster is Wnt signaling group, which includes newly recognized somatic variants in CSDE1 as well as somatic gene fusions affecting MAML3. ('variants', 'Var', (82, 90)) ('CSDE1', 'Gene', (94, 99)) ('MAML3', 'Gene', '55534', (142, 147)) ('CSDE1', 'Gene', '7812', (94, 99)) ('MAML3', 'Gene', (142, 147)) 15 33397043 Aside from those three syndromes, germline variants in the succinate dehydrogenase (SDH) genes are the most common cause of PPGL, occurring in up to 25% of all PPGL patients. ('occurring', 'Reg', (130, 139)) ('succinate dehydrogenase', 'Gene', '6390', (59, 82)) ('succinate dehydrogenase', 'Gene', (59, 82)) ('PPGL', 'Disease', (124, 128)) ('SDH', 'Gene', '6390', (84, 87)) ('patients', 'Species', '9606', (165, 173)) ('cause', 'Reg', (115, 120)) ('germline variants', 'Var', (34, 51)) ('SDH', 'Gene', (84, 87)) 16 33397043 Clinical practice guidelines of PPGL recommend testing for germline variants in all patients by accredited laboratories. ('testing', 'Reg', (47, 54)) ('PPGL', 'Gene', (32, 36)) ('germline', 'Var', (59, 67)) ('patients', 'Species', '9606', (84, 92)) 18 33397043 In this study, whole exome sequencing (WES) was used to screen for novel causative variants associated with PPGL to improve the detection rate of rare genetic variants in our cohort. ('variants', 'Var', (83, 91)) ('S', 'Chemical', 'MESH:D013455', (41, 42)) ('PPGL', 'Gene', (108, 112)) 19 33397043 Additional screening for variants in other genes related to cancerous disease or mitochondrial function was also performed. ('cancer', 'Phenotype', 'HP:0002664', (60, 66)) ('variants', 'Var', (25, 33)) ('cancerous disease', 'Disease', 'MESH:D009369', (60, 77)) ('cancerous disease', 'Disease', (60, 77)) 36 33397043 Allele frequencies in normal controls (gnomeAD) and in silico prediction results were considered (SIFT, PolyPhen2, and MutationTaster). ('S', 'Chemical', 'MESH:D013455', (98, 99)) ('PolyPhen2', 'Var', (104, 113)) ('SIFT', 'Var', (98, 102)) ('MutationTaster', 'Var', (119, 133)) 40 33397043 Genes related to other types of cancerous disease or encoding for mitochondria-localized proteins were screened for additional variants. ('variants', 'Var', (127, 135)) ('cancerous disease', 'Disease', 'MESH:D009369', (32, 49)) ('cancer', 'Phenotype', 'HP:0002664', (32, 38)) ('cancerous disease', 'Disease', (32, 49)) 45 33397043 Among 36 patients, 14 patients were found to carry at least one variant of interest (VOI) in 32 pheochromocytoma-related genes. ('patients', 'Species', '9606', (9, 17)) ('patients', 'Species', '9606', (22, 30)) ('variant', 'Var', (64, 71)) ('pheochromocytoma', 'Disease', (96, 112)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (96, 112)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (96, 112)) 47 33397043 SDHA c.778G>A (p.Gly260Arg) was detected in a patient negative for SDHB, SDHD, VHL, and RET genes. ('VHL', 'Gene', '7428', (79, 82)) ('patient', 'Species', '9606', (46, 53)) ('p.Gly260Arg', 'Mutation', 'rs940845256', (15, 26)) ('RET', 'Gene', (88, 91)) ('SDHA', 'Gene', (0, 4)) ('SDHB', 'Gene', '6390', (67, 71)) ('c.778G>A', 'Var', (5, 13)) ('SDHB', 'Gene', (67, 71)) ('RET', 'Gene', '5979', (88, 91)) ('SDHA', 'Gene', '6389', (0, 4)) ('c.778G>A', 'Mutation', 'rs940845256', (5, 13)) ('SDHD', 'Gene', (73, 77)) ('VHL', 'Gene', (79, 82)) ('SDHD', 'Gene', '6392', (73, 77)) 49 33397043 KIF1B c.2787-2A>C, a likely pathogenic variant that had not been previously reported, was detected in a patient with a bladder paraganglioma. ('KIF1B', 'Gene', (0, 5)) ('KIF1B', 'Gene', '23095', (0, 5)) ('bladder paraganglioma', 'Disease', (119, 140)) ('paraganglioma', 'Phenotype', 'HP:0002668', (127, 140)) ('patient', 'Species', '9606', (104, 111)) ('c.2787-2A>C', 'Mutation', 'c.2787-2A>C', (6, 17)) ('bladder paraganglioma', 'Disease', 'MESH:D001745', (119, 140)) ('c.2787-2A>C', 'Var', (6, 17)) 50 33397043 Other variants detected in pheochromocytoma-related genes lacked strong supporting evidence for pathogenic classification. ('pheochromocytoma', 'Disease', 'MESH:D010673', (27, 43)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (27, 43)) ('pheochromocytoma', 'Disease', (27, 43)) ('variants', 'Var', (6, 14)) 51 33397043 SDHC c.478G>A (p.Val160Met) has not been reported previously, but other missense variants near this amino acid residue such as p. Leu158Pro and p. Leu161Val had been detected in PPGL patients. ('c.478G>A', 'Mutation', 'rs377274728', (5, 13)) ('Leu158Pro', 'SUBSTITUTION', 'None', (130, 139)) ('p.Val160Met', 'Mutation', 'rs147022828', (15, 26)) ('SDHC', 'Gene', (0, 4)) ('detected', 'Reg', (166, 174)) ('PPGL', 'Disease', (178, 182)) ('Leu161Val', 'Var', (147, 156)) ('SDHC', 'Gene', '6391', (0, 4)) ('Leu158Pro', 'Var', (130, 139)) ('Leu161Val', 'SUBSTITUTION', 'None', (147, 156)) ('patients', 'Species', '9606', (183, 191)) 52 33397043 FH c.418G>C (p.Val140Leu) had been submitted in ClinVar as a VUS, but c.419T>G (p. Val140Gly) involving the same amino acid residue has been reported in leiomyomatosis and renal cell cancer patients. ('S', 'Chemical', 'MESH:D013455', (63, 64)) ('c.419T>G', 'Var', (70, 78)) ('Val140Gly', 'Var', (83, 92)) ('patients', 'Species', '9606', (190, 198)) ('p.Val140Leu', 'Mutation', 'rs768637170', (13, 24)) ('Val140Gly', 'SUBSTITUTION', 'None', (83, 92)) ('cancer', 'Phenotype', 'HP:0002664', (183, 189)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (172, 189)) ('c.419T>G', 'Mutation', 'rs75642700', (70, 78)) ('leiomyomatosis and renal cell cancer', 'Disease', 'MESH:C535516', (153, 189)) ('c.418G>C', 'Mutation', 'rs768637170', (3, 11)) 53 33397043 In addition, a novel nonsense variant, c.914G>A (p.Trp305*) in DNMT3A, showed variant allele frequency of 18% in exome sequencing data, and subsequent validation by Sanger sequencing showed a small alternate peak in the region (Supplemental Fig. ('c.914G>A', 'Var', (39, 47)) ('c.914G>A', 'Mutation', 'rs765341003', (39, 47)) ('S', 'Chemical', 'MESH:D013455', (228, 229)) ('p.Trp305*', 'Mutation', 'rs765341003', (49, 58)) ('DNMT3A', 'Gene', (63, 69)) ('S', 'Chemical', 'MESH:D013455', (165, 166)) ('DNMT3A', 'Gene', '1788', (63, 69)) 56 33397043 One likely pathogenic variant in BRCA2 and one VUS in TP53 were detected in cancer-related genes (Table 2). ('BRCA2', 'Gene', (33, 38)) ('variant', 'Var', (22, 29)) ('S', 'Chemical', 'MESH:D013455', (49, 50)) ('cancer', 'Phenotype', 'HP:0002664', (76, 82)) ('TP53', 'Gene', '7157', (54, 58)) ('BRCA2', 'Gene', '675', (33, 38)) ('pathogenic', 'Reg', (11, 21)) ('TP53', 'Gene', (54, 58)) ('cancer', 'Disease', (76, 82)) ('cancer', 'Disease', 'MESH:D009369', (76, 82)) 57 33397043 A BRCA2 splice-site variant, c.8488-1G>A, was detected in a 25-year-old male patient with early-onset paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (102, 115)) ('paraganglioma', 'Disease', (102, 115)) ('BRCA2', 'Gene', (2, 7)) ('c.8488-1G>A', 'Mutation', 'rs397507404', (29, 40)) ('c.8488-1G>A', 'Var', (29, 40)) ('paraganglioma', 'Disease', 'MESH:D010235', (102, 115)) ('BRCA2', 'Gene', '675', (2, 7)) ('patient', 'Species', '9606', (77, 84)) 59 33397043 A patient with VUS in TP53, c.566C>T (p.Ala189Val), had previously been diagnosed with breast cancer, endometrial polyp and also had a brother who had been diagnosed with choriocarcinoma. ('choriocarcinoma', 'Disease', (171, 186)) ('choriocarcinoma', 'Phenotype', 'HP:0100768', (171, 186)) ('S', 'Chemical', 'MESH:D013455', (17, 18)) ('p.Ala189Val', 'Mutation', 'rs121912665', (38, 49)) ('c.566C>T', 'Var', (28, 36)) ('endometrial polyp', 'Disease', (102, 119)) ('breast cancer', 'Disease', 'MESH:D001943', (87, 100)) ('carcinoma', 'Phenotype', 'HP:0030731', (177, 186)) ('endometrial polyp', 'Disease', 'MESH:D011127', (102, 119)) ('cancer', 'Phenotype', 'HP:0002664', (94, 100)) ('breast cancer', 'Disease', (87, 100)) ('TP53', 'Gene', '7157', (22, 26)) ('choriocarcinoma', 'Disease', 'MESH:D002822', (171, 186)) ('breast cancer', 'Phenotype', 'HP:0003002', (87, 100)) ('patient', 'Species', '9606', (2, 9)) ('TP53', 'Gene', (22, 26)) ('c.566C>T', 'Mutation', 'rs121912665', (28, 36)) 60 33397043 Additionally, we found a missense VUS c.473G>A in NFU1, which is a causative gene of multiple mitochondrial dysfunctions syndrome 1 (MMDS1). ('c.473G>A', 'Var', (38, 46)) ('NFU1', 'Gene', (50, 54)) ('MMDS1', 'Gene', '27247', (133, 138)) ('S', 'Chemical', 'MESH:D013455', (36, 37)) ('NFU1', 'Gene', '27247', (50, 54)) ('S', 'Chemical', 'MESH:D013455', (136, 137)) ('c.473G>A', 'Mutation', 'rs1281276965', (38, 46)) ('mitochondrial dysfunctions', 'Phenotype', 'HP:0003287', (94, 120)) ('MMDS1', 'Gene', (133, 138)) ('multiple mitochondrial dysfunctions syndrome', 'Disease', 'MESH:C565304', (85, 129)) ('multiple mitochondrial dysfunctions syndrome', 'Disease', (85, 129)) 62 33397043 SDHA c.778G>A (p.Gly260Arg) was shown to be a loss-of-function variant in functional studies in a yeast strain lacking Sdh1. ('Sdh1', 'Gene', '853709', (119, 123)) ('p.Gly260Arg', 'Mutation', 'rs940845256', (15, 26)) ('SDHA', 'Gene', (0, 4)) ('yeast', 'Species', '4932', (98, 103)) ('Sdh1', 'Gene', (119, 123)) ('c.778G>A', 'Var', (5, 13)) ('SDHA', 'Gene', '6389', (0, 4)) ('c.778G>A', 'Mutation', 'rs940845256', (5, 13)) ('loss-of-function', 'NegReg', (46, 62)) 63 33397043 Pathogenic germline SDHA variants were previously identified in 7.6% of patients with PGL, with diagnosis occurring at a significantly younger age in patients carrying the SDHA variants. ('variants', 'Var', (25, 33)) ('SDHA', 'Gene', (20, 24)) ('Pathogenic', 'Reg', (0, 10)) ('SDHA', 'Gene', (172, 176)) ('patients', 'Species', '9606', (150, 158)) ('SDHA', 'Gene', '6389', (20, 24)) ('SDHA', 'Gene', '6389', (172, 176)) ('variants', 'Var', (177, 185)) ('PGL', 'Disease', (86, 89)) ('patients', 'Species', '9606', (72, 80)) 64 33397043 The patient carrying the likely pathogenic SDHA variant in this study was diagnosed with head and neck paraganglioma at the age of 20 and was the second youngest patient of our study cohort. ('diagnosed', 'Reg', (74, 83)) ('neck paraganglioma', 'Disease', (98, 116)) ('variant', 'Var', (48, 55)) ('pathogenic', 'Reg', (32, 42)) ('patient', 'Species', '9606', (4, 11)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (89, 116)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (98, 116)) ('SDHA', 'Gene', '6389', (43, 47)) ('paraganglioma', 'Phenotype', 'HP:0002668', (103, 116)) ('patient', 'Species', '9606', (162, 169)) ('SDHA', 'Gene', (43, 47)) 65 33397043 Missense variants in the KIF1B gene had been previously detected in samples of pheochromocytoma, along with a splice site variant. ('pheochromocytoma', 'Disease', 'MESH:D010673', (79, 95)) ('detected', 'Reg', (56, 64)) ('KIF1B', 'Gene', (25, 30)) ('KIF1B', 'Gene', '23095', (25, 30)) ('Missense variants', 'Var', (0, 17)) ('pheochromocytoma', 'Disease', (79, 95)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (79, 95)) 66 33397043 Yet, no previous reports of paraganglioma with a pathogenic KIF1B variant have been published. ('KIF1B', 'Gene', '23095', (60, 65)) ('paraganglioma', 'Phenotype', 'HP:0002668', (28, 41)) ('paraganglioma', 'Disease', (28, 41)) ('variant', 'Var', (66, 73)) ('paraganglioma', 'Disease', 'MESH:D010235', (28, 41)) ('KIF1B', 'Gene', (60, 65)) 67 33397043 Our patient carrying a KIF1B c.2787-2A>C had a bladder paraganglioma, which may be the first paraganglioma to be reported carrying a KIF1B variant. ('bladder paraganglioma', 'Disease', 'MESH:D001745', (47, 68)) ('paraganglioma', 'Disease', 'MESH:D010235', (93, 106)) ('c.2787-2A>C', 'Mutation', 'c.2787-2A>C', (29, 40)) ('paraganglioma', 'Disease', 'MESH:D010235', (55, 68)) ('c.2787-2A>C', 'Var', (29, 40)) ('patient', 'Species', '9606', (4, 11)) ('paraganglioma', 'Phenotype', 'HP:0002668', (93, 106)) ('paraganglioma', 'Disease', (93, 106)) ('paraganglioma', 'Phenotype', 'HP:0002668', (55, 68)) ('bladder paraganglioma', 'Disease', (47, 68)) ('KIF1B', 'Gene', (133, 138)) ('KIF1B', 'Gene', '23095', (23, 28)) ('KIF1B', 'Gene', (23, 28)) ('paraganglioma', 'Disease', (55, 68)) ('KIF1B', 'Gene', '23095', (133, 138)) 68 33397043 The overall positive rate of pathogenic variants in the whole cohort of the apparently sporadic PPGL in our institution was 21.7% (35 among 161 PPGL patients). ('patients', 'Species', '9606', (149, 157)) ('pathogenic', 'Reg', (29, 39)) ('PPGL', 'Disease', (96, 100)) ('positive', 'Reg', (12, 20)) ('variants', 'Var', (40, 48)) 71 33397043 Among the VUSs, a novel nonsense variant, c.914G>A (p.Trp305*) was detected in DNMT3A. ('p.Trp305*', 'Mutation', 'rs765341003', (52, 61)) ('VUSs', 'Disease', 'None', (10, 14)) ('DNMT3A', 'Gene', (79, 85)) ('c.914G>A', 'Var', (42, 50)) ('DNMT3A', 'Gene', '1788', (79, 85)) ('c.914G>A', 'Mutation', 'rs765341003', (42, 50)) ('VUSs', 'Disease', (10, 14)) 73 33397043 Germline variants of DNMT3A previously reported in paraganglioma had been gain-of-function missense variants, while most of the likely hematopoietic somatic mosaic variants detected in multiple cancers were loss-of-function variants. ('gain-of-function', 'PosReg', (74, 90)) ('cancers', 'Phenotype', 'HP:0002664', (194, 201)) ('paraganglioma', 'Disease', 'MESH:D010235', (51, 64)) ('missense variants', 'Var', (91, 108)) ('cancers', 'Disease', 'MESH:D009369', (194, 201)) ('cancer', 'Phenotype', 'HP:0002664', (194, 200)) ('cancers', 'Disease', (194, 201)) ('DNMT3A', 'Gene', (21, 27)) ('DNMT3A', 'Gene', '1788', (21, 27)) ('loss-of-function', 'NegReg', (207, 223)) ('paraganglioma', 'Phenotype', 'HP:0002668', (51, 64)) ('variants', 'Var', (9, 17)) ('paraganglioma', 'Disease', (51, 64)) 74 33397043 In other cancer-related genes, BRCA2 c.8488-1G>A, detected in a 25-year-old male patient with early-onset paraganglioma. ('cancer', 'Disease', (9, 15)) ('BRCA2', 'Gene', (31, 36)) ('patient', 'Species', '9606', (81, 88)) ('paraganglioma', 'Disease', (106, 119)) ('c.8488-1G>A', 'Mutation', 'rs397507404', (37, 48)) ('BRCA2', 'Gene', '675', (31, 36)) ('cancer', 'Phenotype', 'HP:0002664', (9, 15)) ('paraganglioma', 'Disease', 'MESH:D010235', (106, 119)) ('c.8488-1G>A', 'Var', (37, 48)) ('cancer', 'Disease', 'MESH:D009369', (9, 15)) ('paraganglioma', 'Phenotype', 'HP:0002668', (106, 119)) 76 33397043 Germline BRCA1/2 variants, most commonly associated genes in familial breast and ovarian cancer, are also known to be associated with other cancers such as prostate, colon, gastric, pancreatic cancer. ('pancreatic cancer', 'Disease', 'MESH:D010190', (182, 199)) ('associated', 'Reg', (41, 51)) ('cancer', 'Phenotype', 'HP:0002664', (193, 199)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) ('variants', 'Var', (17, 25)) ('pancreatic cancer', 'Disease', (182, 199)) ('BRCA1/2', 'Gene', (9, 16)) ('cancers', 'Disease', 'MESH:D009369', (140, 147)) ('associated', 'Reg', (118, 128)) ('prostate', 'Disease', (156, 164)) ('familial breast and ovarian cancer', 'Disease', 'MESH:D000071298', (61, 95)) ('gastric', 'Disease', (173, 180)) ('BRCA1/2', 'Gene', '672;675', (9, 16)) ('colon', 'Disease', (166, 171)) ('pancreatic cancer', 'Phenotype', 'HP:0002894', (182, 199)) ('cancer', 'Phenotype', 'HP:0002664', (140, 146)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (81, 95)) ('cancers', 'Phenotype', 'HP:0002664', (140, 147)) ('cancers', 'Disease', (140, 147)) 77 33397043 BRCA1/2 variants are not regarded as genetic causes for adrenal tumors, but there had been a previously reported case of pheochromocytoma who carried BRCA2 variants. ('tumors', 'Phenotype', 'HP:0002664', (64, 70)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (121, 137)) ('BRCA1/2', 'Gene', '672;675', (0, 7)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (121, 137)) ('BRCA2', 'Gene', '675', (150, 155)) ('adrenal tumors', 'Disease', 'MESH:D000310', (56, 70)) ('variants', 'Var', (156, 164)) ('BRCA2', 'Gene', (150, 155)) ('BRCA1/2', 'Gene', (0, 7)) ('adrenal tumors', 'Disease', (56, 70)) ('pheochromocytoma', 'Disease', (121, 137)) 82 33397043 Although the causative role of this variant for the diagnosis of pheochromocytoma cannot be proven, the BRCA2 germline variants may be associated with an increased risk for adrenal tumors. ('adrenal tumors', 'Disease', (173, 187)) ('BRCA2', 'Gene', (104, 109)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (65, 81)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (65, 81)) ('tumors', 'Phenotype', 'HP:0002664', (181, 187)) ('BRCA2', 'Gene', '675', (104, 109)) ('associated', 'Reg', (135, 145)) ('adrenal tumors', 'Disease', 'MESH:D000310', (173, 187)) ('pheochromocytoma', 'Disease', (65, 81)) ('variants', 'Var', (119, 127)) 83 33397043 Another missense VUS, c.473G>A (p.Arg158Gln) in NFU1, was found in an individual who also carried a missense variant c.418G>C (p.Val140Leu) in FH. ('NFU1', 'Gene', (48, 52)) ('c.418G>C', 'Mutation', 'rs768637170', (117, 125)) ('p.Val140Leu', 'Mutation', 'rs768637170', (127, 138)) ('p.Arg158Gln', 'Mutation', 'rs1281276965', (32, 43)) ('c.473G>A', 'Mutation', 'rs1281276965', (22, 30)) ('NFU1', 'Gene', '27247', (48, 52)) ('S', 'Chemical', 'MESH:D013455', (19, 20)) ('c.418G>C', 'Var', (117, 125)) 85 33397043 Though this gene is known to be associated with MMDS1, which is inherited in an autosomal recessive pattern, a variant that affects the function of the protein may be involved with compromised SDH function. ('variant', 'Var', (111, 118)) ('involved', 'Reg', (167, 175)) ('MMDS1', 'Gene', (48, 53)) ('function of', 'MPA', (136, 147)) ('SDH', 'Gene', '6390', (193, 196)) ('protein', 'Protein', (152, 159)) ('MMDS1', 'Gene', '27247', (48, 53)) ('associated', 'Reg', (32, 42)) ('SDH', 'Gene', (193, 196)) ('affects', 'Reg', (124, 131)) 86 33397043 Association of the disease and the BRCA2 variant, as well as VUS detected in other genes, should be assessed in further studies. ('variant', 'Var', (41, 48)) ('BRCA2', 'Gene', '675', (35, 40)) ('S', 'Chemical', 'MESH:D013455', (63, 64)) ('BRCA2', 'Gene', (35, 40)) 90 33397043 Likely pathogenic variants were detected in two patients, which led to a 5.6% increase in molecularly confirmed PPGL patients. ('PPGL', 'Disease', (112, 116)) ('variants', 'Var', (18, 26)) ('increase', 'PosReg', (78, 86)) ('patients', 'Species', '9606', (117, 125)) ('patients', 'Species', '9606', (48, 56)) 131 32408270 The genetic study for the mutations of succinate dehydrogenase (SDH)-B, D, and C subunits, MYC-associated factor X (MAX), Transmembrane protein 127 (TMEM 127), and Von Hippel-Lindau (VHL) were requested. ('Transmembrane protein 127', 'Gene', (122, 147)) ('MAX', 'Gene', (116, 119)) ('MAX', 'Gene', '4149', (116, 119)) ('VHL', 'Gene', '7428', (183, 186)) ('succinate dehydrogenase (SDH)-B', 'Gene', '6390', (39, 70)) ('Transmembrane protein 127', 'Gene', '55654', (122, 147)) ('TMEM 127', 'Gene', (149, 157)) ('TMEM 127', 'Gene', '55654', (149, 157)) ('Von Hippel-Lindau', 'Gene', '7428', (164, 181)) ('mutations', 'Var', (26, 35)) ('Von Hippel-Lindau', 'Gene', (164, 181)) ('MYC-associated factor X', 'Gene', '4149', (91, 114)) ('MYC-associated factor X', 'Gene', (91, 114)) ('VHL', 'Gene', (183, 186)) 132 32408270 PALB2 gene variant c.1408A>G, p (Thr470Ala) with unknown meaning was found when a genetic cause for her breast cancer was studied. ('c.1408A>G', 'Mutation', 'rs150636811', (19, 28)) ('cancer', 'Phenotype', 'HP:0002664', (111, 117)) ('PALB2', 'Gene', '79728', (0, 5)) ('c.1408A>G', 'Var', (19, 28)) ('Thr470Ala', 'Var', (33, 42)) ('breast cancer', 'Disease', 'MESH:D001943', (104, 117)) ('PALB2', 'Gene', (0, 5)) ('breast cancer', 'Disease', (104, 117)) ('Thr470Ala', 'SUBSTITUTION', 'None', (33, 42)) ('breast cancer', 'Phenotype', 'HP:0003002', (104, 117)) 158 32408270 Most of hereditary paragangliomas arising in the skull base and neck have been linked to mutations in the genes encoding different subunits of the succinate dehydrogenase (SDH) enzyme complex. ('hereditary paragangliomas', 'Disease', (8, 33)) ('paraganglioma', 'Phenotype', 'HP:0002668', (19, 32)) ('linked', 'Reg', (79, 85)) ('succinate dehydrogenase', 'Gene', '6390', (147, 170)) ('succinate dehydrogenase', 'Gene', (147, 170)) ('SDH', 'Gene', (172, 175)) ('hereditary paragangliomas', 'Disease', 'MESH:D010235', (8, 33)) ('mutations', 'Var', (89, 98)) ('paragangliomas', 'Phenotype', 'HP:0002668', (19, 33)) ('SDH', 'Gene', '6390', (172, 175)) 160 32408270 Most cases of hereditary paraganglioma are accounted for mutations in SDHD, SDHB, and SDHC, VHL, and NF1. ('SDHD', 'Gene', (70, 74)) ('SDHD', 'Gene', '6392', (70, 74)) ('SDHB', 'Gene', '6390', (76, 80)) ('paraganglioma', 'Disease', 'MESH:D010235', (25, 38)) ('NF1', 'Gene', (101, 104)) ('SDHB', 'Gene', (76, 80)) ('SDHC', 'Gene', '6391', (86, 90)) ('NF1', 'Gene', '4763', (101, 104)) ('VHL', 'Gene', (92, 95)) ('paraganglioma', 'Phenotype', 'HP:0002668', (25, 38)) ('paraganglioma', 'Disease', (25, 38)) ('mutations', 'Var', (57, 66)) ('VHL', 'Gene', '7428', (92, 95)) ('SDHC', 'Gene', (86, 90)) ('accounted', 'Reg', (43, 52)) 174 32408270 There is a report of the possible involvement of the PALB2 gene in the etiology of paragangliomas as well as a report of a clinical case where a PALB2 mutation in metastatic pancreatic adenocarcinoma and neuroendocrine tumor was described. ('PALB2', 'Gene', '79728', (145, 150)) ('tumor', 'Phenotype', 'HP:0002664', (219, 224)) ('PALB2', 'Gene', (53, 58)) ('pancreatic adenocarcinoma', 'Disease', (174, 199)) ('PALB2', 'Gene', '79728', (53, 58)) ('neuroendocrine tumor', 'Disease', (204, 224)) ('paragangliomas', 'Disease', (83, 97)) ('paragangliomas', 'Disease', 'MESH:D010235', (83, 97)) ('pancreatic adenocarcinoma', 'Disease', 'MESH:D000230', (174, 199)) ('paragangliomas', 'Phenotype', 'HP:0002668', (83, 97)) ('carcinoma', 'Phenotype', 'HP:0030731', (190, 199)) ('mutation', 'Var', (151, 159)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('pancreatic adenocarcinoma', 'Phenotype', 'HP:0006725', (174, 199)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (204, 224)) ('involvement', 'Reg', (34, 45)) ('neuroendocrine tumor', 'Disease', 'MESH:D018358', (204, 224)) ('PALB2', 'Gene', (145, 150)) 181 32067422 Spectrum of EGFR aberrations and potential clinical implications: insights from integrative pan-cancer analysis Human epidermal growth factor receptor (EGFR) is an oncogenic gene and one of top targets of precision therapy in lung cancer with EGFR mutations. ('mutations', 'Var', (248, 257)) ('cancer', 'Disease', 'MESH:D009369', (231, 237)) ('lung cancer', 'Disease', (226, 237)) ('cancer', 'Phenotype', 'HP:0002664', (96, 102)) ('epidermal growth factor receptor', 'Gene', '1956', (118, 150)) ('lung cancer', 'Phenotype', 'HP:0100526', (226, 237)) ('cancer', 'Disease', (231, 237)) ('Human', 'Species', '9606', (112, 117)) ('epidermal growth factor receptor', 'Gene', (118, 150)) ('cancer', 'Disease', 'MESH:D009369', (96, 102)) ('cancer', 'Phenotype', 'HP:0002664', (231, 237)) ('lung cancer', 'Disease', 'MESH:D008175', (226, 237)) ('EGFR', 'Gene', (243, 247)) ('cancer', 'Disease', (96, 102)) 182 32067422 Although there are many reports for some individual cancers, comprehensive profiling of EGFR mutations, overexpression, amplification, DNA methylation, and their clinical associations across many different cancers simultaneously was not available. ('cancer', 'Phenotype', 'HP:0002664', (52, 58)) ('cancers', 'Disease', (52, 59)) ('mutations', 'Var', (93, 102)) ('cancer', 'Phenotype', 'HP:0002664', (206, 212)) ('cancers', 'Disease', 'MESH:D009369', (206, 213)) ('cancers', 'Phenotype', 'HP:0002664', (206, 213)) ('cancers', 'Phenotype', 'HP:0002664', (52, 59)) ('cancers', 'Disease', (206, 213)) ('EGFR', 'Gene', (88, 92)) ('cancers', 'Disease', 'MESH:D009369', (52, 59)) 184 32067422 The Cancer Genome Atlas (TCGA) datasets for 32 cancer types involving 11,314 patients were analyzed for alterations (mutations and amplification/deletion), abnormal expression and DNA methylation in EGFR gene. ('mutations', 'Var', (117, 126)) ('rat', 'Species', '10116', (108, 111)) ('cancer', 'Disease', 'MESH:D009369', (47, 53)) ('EGFR', 'Gene', (199, 203)) ('Cancer', 'Disease', 'MESH:D009369', (4, 10)) ('DNA methylation', 'Var', (180, 195)) ('cancer', 'Disease', (47, 53)) ('expression', 'MPA', (165, 175)) ('amplification/deletion', 'Var', (131, 153)) ('patients', 'Species', '9606', (77, 85)) ('Cancer', 'Phenotype', 'HP:0002664', (4, 10)) ('Cancer', 'Disease', (4, 10)) ('cancer', 'Phenotype', 'HP:0002664', (47, 53)) ('abnormal', 'Reg', (156, 164)) 186 32067422 EGFR alteration frequency, mutation sites across functional domains, amplification, overexpression, and DNA methylation patterns differed greatly among different cancer types. ('cancer', 'Disease', 'MESH:D009369', (162, 168)) ('rat', 'Species', '10116', (9, 12)) ('EGFR', 'Gene', (0, 4)) ('alteration', 'Var', (5, 15)) ('cancer', 'Disease', (162, 168)) ('cancer', 'Phenotype', 'HP:0002664', (162, 168)) 188 32067422 Targetable mutations, mainly in lung cancer, were primarily found in the Pkinase_Tyr domain. ('mutations', 'Var', (11, 20)) ('lung cancer', 'Disease', 'MESH:D008175', (32, 43)) ('cancer', 'Phenotype', 'HP:0002664', (37, 43)) ('lung cancer', 'Disease', (32, 43)) ('lung cancer', 'Phenotype', 'HP:0100526', (32, 43)) 189 32067422 Glioblastoma multiforme had the highest rate of alterations, but it was dominated by gene amplification and most mutations were in the Furin-like domain where targeted therapy was less effective. ('rat', 'Species', '10116', (52, 55)) ('Glioblastoma multiforme', 'Disease', 'MESH:D005909', (0, 23)) ('rat', 'Species', '10116', (40, 43)) ('Glioblastoma multiforme', 'Disease', (0, 23)) ('mutations', 'Var', (113, 122)) ('Glioblastoma', 'Phenotype', 'HP:0012174', (0, 12)) ('Furin', 'Gene', '5045', (135, 140)) ('Furin', 'Gene', (135, 140)) 190 32067422 Low-grade glioma often had gene amplification and increased EGFR expression which was associated with poor outcome. ('gene amplification', 'Var', (27, 45)) ('glioma', 'Phenotype', 'HP:0009733', (10, 16)) ('increased', 'PosReg', (50, 59)) ('glioma', 'Disease', 'MESH:D005910', (10, 16)) ('expression', 'MPA', (65, 75)) ('EGFR', 'Gene', (60, 64)) ('glioma', 'Disease', (10, 16)) 191 32067422 Colon and pancreatic adenocarcinoma had very few EGFR mutations; however, high EGFR expression was significantly associated with short patient survival. ('patient', 'Species', '9606', (135, 142)) ('Colon and pancreatic adenocarcinoma', 'Disease', 'MESH:D003110', (0, 35)) ('EGFR', 'Gene', (79, 83)) ('EGFR', 'Gene', (49, 53)) ('mutations', 'Var', (54, 63)) ('short', 'NegReg', (129, 134)) ('carcinoma', 'Phenotype', 'HP:0030731', (26, 35)) ('pancreatic adenocarcinoma', 'Phenotype', 'HP:0006725', (10, 35)) ('expression', 'MPA', (84, 94)) ('associated', 'Reg', (113, 123)) 193 32067422 DNA methylation was highly associated with EGFR expression and patient outcomes in some cancers. ('cancers', 'Disease', 'MESH:D009369', (88, 95)) ('expression', 'MPA', (48, 58)) ('associated', 'Reg', (27, 37)) ('methylation', 'Var', (4, 15)) ('cancers', 'Phenotype', 'HP:0002664', (88, 95)) ('cancers', 'Disease', (88, 95)) ('patient', 'Species', '9606', (63, 70)) ('cancer', 'Phenotype', 'HP:0002664', (88, 94)) ('EGFR', 'Gene', (43, 47)) 195 32067422 While mutations in the Pkinase_Tyr domain are more important for treatment selection, increased expression from amplification or deregulation affects more tumor types and leads to worse outcome, which calls for new treatment strategies for these EGFR-driven tumors. ('rat', 'Species', '10116', (227, 230)) ('tumor', 'Disease', 'MESH:D009369', (155, 160)) ('tumor', 'Phenotype', 'HP:0002664', (258, 263)) ('leads to', 'Reg', (171, 179)) ('increased', 'PosReg', (86, 95)) ('tumors', 'Disease', (258, 264)) ('tumors', 'Phenotype', 'HP:0002664', (258, 264)) ('tumor', 'Disease', (258, 263)) ('tumor', 'Phenotype', 'HP:0002664', (155, 160)) ('deregulation', 'MPA', (129, 141)) ('amplification', 'Var', (112, 125)) ('expression', 'MPA', (96, 106)) ('tumor', 'Disease', (155, 160)) ('tumors', 'Disease', 'MESH:D009369', (258, 264)) ('affects', 'Reg', (142, 149)) ('tumor', 'Disease', 'MESH:D009369', (258, 263)) ('mutations', 'Var', (6, 15)) 197 32067422 Five functional domains are characterized for EGFR according to the database of protein families (Pfam, http://pfam.xfam.org/protein/P00533): Recep_L (57-168aa), Furin-like (177-338aa), Recep_L (361-481aa), GF_recep_IV (505-637aa), and Pkinase_Tyr domains (712-968aa). ('177-338aa', 'Var', (174, 183)) ('712-968aa', 'Var', (257, 266)) ('Furin', 'Gene', (162, 167)) ('Furin', 'Gene', '5045', (162, 167)) ('505-637aa', 'Var', (220, 229)) 199 32067422 Upon stimulation by its ligands, dimerization (both homodimerization and heterodimerization) of EGFR results in its intracellular tyrosine kinase activation and autophosphorylation at multiple tyrosine residues, which activates a number of downstream signaling cascades that not only promote proliferation, growth, and survival of normal cells but also contribute to processes that are crucial to cancer progression, including angiogenesis, metastasis, and apoptosis [4, 5]. ('cancer', 'Disease', (397, 403)) ('activation', 'PosReg', (146, 156)) ('promote', 'PosReg', (284, 291)) ('proliferation', 'CPA', (292, 305)) ('tyrosine', 'Chemical', 'MESH:D014443', (193, 201)) ('EGFR', 'Gene', (96, 100)) ('dimerization', 'Var', (33, 45)) ('survival', 'CPA', (319, 327)) ('metastasis', 'CPA', (441, 451)) ('growth', 'CPA', (307, 313)) ('activates', 'PosReg', (218, 227)) ('contribute', 'Reg', (353, 363)) ('cancer', 'Phenotype', 'HP:0002664', (397, 403)) ('autophosphorylation', 'MPA', (161, 180)) ('tyrosine', 'Chemical', 'MESH:D014443', (130, 138)) ('intracellular tyrosine kinase', 'MPA', (116, 145)) ('cancer', 'Disease', 'MESH:D009369', (397, 403)) ('rat', 'Species', '10116', (299, 302)) 201 32067422 It is frequently activated by gene mutation, amplification, or overexpression through abnormal regulation in human cancers. ('human', 'Species', '9606', (109, 114)) ('cancers', 'Disease', 'MESH:D009369', (115, 122)) ('cancers', 'Phenotype', 'HP:0002664', (115, 122)) ('cancers', 'Disease', (115, 122)) ('cancer', 'Phenotype', 'HP:0002664', (115, 121)) ('gene mutation', 'Var', (30, 43)) ('activated', 'PosReg', (17, 26)) ('amplification', 'Var', (45, 58)) ('overexpression', 'PosReg', (63, 77)) 203 32067422 In cancers like non-small-cell lung cancer (NSCLC) [13] and colon adenocarcinoma (COAD) [14], EGFR mutation status is considered as a poor prognostic factor, which is often associated with a more aggressive behavior and decreased patient survival. ('COAD', 'Disease', (82, 86)) ('lung cancer', 'Disease', (31, 42)) ('colon adenocarcinoma', 'Disease', 'MESH:D003110', (60, 80)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (196, 215)) ('carcinoma', 'Phenotype', 'HP:0030731', (71, 80)) ('patient', 'Species', '9606', (230, 237)) ('mutation', 'Var', (99, 107)) ('cancers', 'Disease', 'MESH:D009369', (3, 10)) ('lung cancer', 'Disease', 'MESH:D008175', (31, 42)) ('NSCLC', 'Disease', 'MESH:D002289', (44, 49)) ('small-cell lung cancer', 'Phenotype', 'HP:0030357', (20, 42)) ('lung cancer', 'Phenotype', 'HP:0100526', (31, 42)) ('COAD', 'Disease', 'MESH:D029424', (82, 86)) ('colon adenocarcinoma', 'Disease', (60, 80)) ('NSCLC', 'Disease', (44, 49)) ('NSCLC', 'Phenotype', 'HP:0030358', (44, 49)) ('cancers', 'Phenotype', 'HP:0002664', (3, 10)) ('EGFR', 'Gene', (94, 98)) ('cancers', 'Disease', (3, 10)) ('cancer', 'Phenotype', 'HP:0002664', (36, 42)) ('non-small-cell lung cancer', 'Phenotype', 'HP:0030358', (16, 42)) ('cancer', 'Phenotype', 'HP:0002664', (3, 9)) 206 32067422 Such treatments are very effective and provide significantly improved patient outcomes, particularly for lung adenocarcinoma (LUAD) patients with EGFR mutations [20, 21]. ('improved', 'PosReg', (61, 69)) ('LUAD', 'Phenotype', 'HP:0030078', (126, 130)) ('lung adenocarcinoma', 'Phenotype', 'HP:0030078', (105, 124)) ('carcinoma', 'Phenotype', 'HP:0030731', (115, 124)) ('patient', 'Species', '9606', (70, 77)) ('lung adenocarcinoma', 'Disease', (105, 124)) ('EGFR', 'Gene', (146, 150)) ('lung adenocarcinoma', 'Disease', 'MESH:D000077192', (105, 124)) ('patient', 'Species', '9606', (132, 139)) ('patients', 'Species', '9606', (132, 140)) ('mutations', 'Var', (151, 160)) 208 32067422 Although many literature reports are available on EGFR mutation, overexpression, or amplification for particular cancer types [12, 13, 14, 23, 24], a simultaneous comprehensive profiling over multiple cancer types to explore their similarity and difference is not available. ('rat', 'Species', '10116', (18, 21)) ('cancer', 'Disease', 'MESH:D009369', (201, 207)) ('cancer', 'Disease', (201, 207)) ('cancer', 'Disease', 'MESH:D009369', (113, 119)) ('cancer', 'Disease', (113, 119)) ('cancer', 'Phenotype', 'HP:0002664', (201, 207)) ('mutation', 'Var', (55, 63)) ('EGFR', 'Gene', (50, 54)) ('cancer', 'Phenotype', 'HP:0002664', (113, 119)) 211 32067422 We first examined the patterns of EGFR mutations, including single nucleotide variant (SNV) and short insertion/deletion (indel), across tumors and their implications for targeted therapies. ('tumors', 'Disease', 'MESH:D009369', (137, 143)) ('tumors', 'Disease', (137, 143)) ('single nucleotide variant', 'Var', (60, 85)) ('EGFR', 'Gene', (34, 38)) ('tumors', 'Phenotype', 'HP:0002664', (137, 143)) ('short insertion/deletion', 'Var', (96, 120)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) 215 32067422 The mutation data included SNVs, indels, and CNVs (defined by GISTIC 2.0 as following for log ratio value: -2/-1 = deletion; 0 = diploid; 1 = gain; 2 = amplification). ('deletion', 'Var', (115, 123)) ('rat', 'Species', '10116', (94, 97)) ('gain', 'PosReg', (142, 146)) 225 32067422 The prognostic values of EGFR alterations and its CpG methylation were analyzed with Cox proportional hazard model. ('alterations', 'Var', (30, 41)) ('EGFR', 'Gene', (25, 29)) ('rat', 'Species', '10116', (34, 37)) 226 32067422 The overall EGFR mutation frequency was 2.8% (320/11,410) for all tumor samples and 2.4% (268/11,314) for all patients across the 32 tumor types. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('tumor', 'Disease', 'MESH:D009369', (133, 138)) ('tumor', 'Disease', (66, 71)) ('mutation', 'Var', (17, 25)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('tumor', 'Disease', (133, 138)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) ('EGFR', 'Gene', (12, 16)) ('patients', 'Species', '9606', (110, 118)) 227 32067422 The most common tumors with EGFR mutations were glioblastoma multiforme (GBM, 26.8%), LUAD (14.4%), diffuse large B-cell lymphoma (DLBC, 8.3%), and skin cutaneous melanoma (SKCM, 6.5%). ('glioblastoma', 'Phenotype', 'HP:0012174', (48, 60)) ('EGFR', 'Gene', (28, 32)) ('tumor', 'Phenotype', 'HP:0002664', (16, 21)) ('mutations', 'Var', (33, 42)) ('tumors', 'Disease', (16, 22)) ('lymphoma', 'Phenotype', 'HP:0002665', (121, 129)) ('B-cell lymphoma', 'Disease', 'MESH:D016393', (114, 129)) ('tumors', 'Disease', 'MESH:D009369', (16, 22)) ('B-cell lymphoma', 'Phenotype', 'HP:0012191', (114, 129)) ('LUAD', 'Phenotype', 'HP:0030078', (86, 90)) ('skin cutaneous melanoma', 'Disease', 'MESH:C562393', (148, 171)) ('skin cutaneous melanoma', 'Disease', (148, 171)) ('melanoma', 'Phenotype', 'HP:0002861', (163, 171)) ('B-cell lymphoma', 'Disease', (114, 129)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (153, 171)) ('LUAD', 'Disease', (86, 90)) ('glioblastoma multiforme', 'Disease', (48, 71)) ('tumors', 'Phenotype', 'HP:0002664', (16, 22)) ('glioblastoma multiforme', 'Disease', 'MESH:D005909', (48, 71)) 228 32067422 On the contrary, kidney chromophobe cell carcinoma (KICH), mesothelioma (MESO), pheochromocytoma and paraganglioma (PCPG), thymoma (THYM), thyroid carcinoma (THCA), uterine carcinosarcoma (UCS), and uveal melanoma (UVM) showed almost no EGFR mutations (Figure 1A). ('mesothelioma', 'Disease', (59, 71)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('THCA', 'Phenotype', 'HP:0002890', (158, 162)) ('thymoma', 'Disease', (123, 130)) ('mesothelioma', 'Disease', 'MESH:D008654', (59, 71)) ('carcinosarcoma', 'Disease', 'MESH:D002296', (173, 187)) ('thymoma', 'Phenotype', 'HP:0100522', (123, 130)) ('UCS', 'Phenotype', 'HP:0002891', (189, 192)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (139, 156)) ('carcinoma', 'Phenotype', 'HP:0030731', (41, 50)) ('melanoma', 'Phenotype', 'HP:0002861', (205, 213)) ('UVM', 'Phenotype', 'HP:0007716', (215, 218)) ('melanoma', 'Disease', (205, 213)) ('thyroid carcinoma', 'Disease', (139, 156)) ('glioma', 'Phenotype', 'HP:0009733', (108, 114)) ('paraganglioma', 'Phenotype', 'HP:0002668', (101, 114)) ('kidney chromophobe cell carcinoma', 'Disease', (17, 50)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (80, 114)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (139, 156)) ('sarcoma', 'Phenotype', 'HP:0100242', (180, 187)) ('kidney chromophobe cell carcinoma', 'Disease', 'MESH:C538614', (17, 50)) ('uterine carcinosarcoma', 'Phenotype', 'HP:0002891', (165, 187)) ('uveal melanoma', 'Phenotype', 'HP:0007716', (199, 213)) ('thymoma', 'Disease', 'MESH:D013945', (123, 130)) ('carcinoma', 'Phenotype', 'HP:0030731', (147, 156)) ('melanoma', 'Disease', 'MESH:D008545', (205, 213)) ('mutations', 'Var', (242, 251)) ('THYM', 'Phenotype', 'HP:0100522', (132, 136)) ('carcinosarcoma', 'Disease', (173, 187)) 230 32067422 The 320 EGFR somatic mutations (from 268 tumor samples) were observed across all cancer types and were widely distributed along different functional domains of EGFR gene. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('cancer', 'Disease', 'MESH:D009369', (81, 87)) ('tumor', 'Disease', (41, 46)) ('cancer', 'Disease', (81, 87)) ('observed', 'Reg', (61, 69)) ('EGFR', 'Gene', (160, 164)) ('EGFR', 'Gene', (8, 12)) ('cancer', 'Phenotype', 'HP:0002664', (81, 87)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) ('mutations', 'Var', (21, 30)) 232 32067422 The location distribution of these EGFR mutations was dramatically different among different cancers (Figure 1B, Supplementary Table S2). ('cancers', 'Disease', (93, 100)) ('cancers', 'Phenotype', 'HP:0002664', (93, 100)) ('cancer', 'Phenotype', 'HP:0002664', (93, 99)) ('EGFR', 'Gene', (35, 39)) ('mutations', 'Var', (40, 49)) ('different', 'Reg', (67, 76)) ('cancers', 'Disease', 'MESH:D009369', (93, 100)) 233 32067422 Mutations in GBM and brain lower-grade glioma (LGG) were most commonly located in the Furin-like domain, about 5 times more than the mutations located in the Pkinase_Tyr domain. ('glioma', 'Disease', (39, 45)) ('GBM', 'Gene', (13, 16)) ('Mutations', 'Var', (0, 9)) ('Furin', 'Gene', (86, 91)) ('located', 'Reg', (71, 78)) ('Furin', 'Gene', '5045', (86, 91)) ('glioma', 'Disease', 'MESH:D005910', (39, 45)) ('glioma', 'Phenotype', 'HP:0009733', (39, 45)) 234 32067422 On the contrary, mutations in NSCLC were primarily in the Pkinase_Tyr domain, especially for LUAD, which amounted to four fifths of all mutations. ('NSCLC', 'Disease', 'MESH:D002289', (30, 35)) ('NSCLC', 'Phenotype', 'HP:0030358', (30, 35)) ('LUAD', 'Phenotype', 'HP:0030078', (93, 97)) ('NSCLC', 'Disease', (30, 35)) ('mutations', 'Var', (17, 26)) 235 32067422 Mutations in stomach adenocarcinoma (STAD), head and neck squamous cell carcinoma (HNSC), and SKCM were mostly in other domains whose functions were less known. ('neck squamous cell carcinoma', 'Disease', 'MESH:D000077195', (53, 81)) ('carcinoma', 'Phenotype', 'HP:0030731', (72, 81)) ('adenocarcinoma', 'Disease', (21, 35)) ('head and neck squamous cell carcinoma', 'Phenotype', 'HP:0012288', (44, 81)) ('Mutations', 'Var', (0, 9)) ('carcinoma', 'Phenotype', 'HP:0030731', (26, 35)) ('adenocarcinoma', 'Disease', 'MESH:D000230', (21, 35)) ('HNSC', 'Phenotype', 'HP:0012288', (83, 87)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (58, 81)) ('neck squamous cell carcinoma', 'Disease', (53, 81)) 236 32067422 The 289aa in the Furin-like domain was the most frequently mutated position, which was observed in 27 samples (3 samples with A289D, 1 with A289I, 1 with A289N, 6 with A289T, 15 with A289V, and 1 with A289Rfs*9). ('A289Rfs*9', 'Mutation', 'p.A289RfsX9', (201, 210)) ('A289V', 'Var', (183, 188)) ('A289D', 'Mutation', 'p.A289D', (126, 131)) ('A289I', 'Mutation', 'p.A289I', (140, 145)) ('Furin', 'Gene', (17, 22)) ('A289N', 'Mutation', 'p.A289N', (154, 159)) ('A289I', 'Var', (140, 145)) ('Furin', 'Gene', '5045', (17, 22)) ('A289N', 'Var', (154, 159)) ('A289T', 'Mutation', 'rs769696078', (168, 173)) ('A289V', 'Mutation', 'p.A289V', (183, 188)) ('A289D', 'Var', (126, 131)) ('A289T', 'Var', (168, 173)) 237 32067422 A289V is known to be oncogenic, while other mutation types (A289D/T/N/I) are likely oncogenic. ('A289V', 'Mutation', 'p.A289V', (0, 5)) ('A289V', 'Var', (0, 5)) ('A289D/T/N/I', 'Var', (60, 71)) ('A289D', 'Mutation', 'p.A289D', (60, 65)) 238 32067422 The only other tumor with mutations at this position was HNSC (1 sample with A289T and 1 with A289Rfs*9), and their importance was little known to this cancer. ('A289Rfs*', 'Var', (94, 102)) ('cancer', 'Disease', (152, 158)) ('cancer', 'Disease', 'MESH:D009369', (152, 158)) ('tumor', 'Disease', 'MESH:D009369', (15, 20)) ('HNSC', 'Phenotype', 'HP:0012288', (57, 61)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('A289T', 'Mutation', 'rs769696078', (77, 82)) ('mutations', 'Var', (26, 35)) ('tumor', 'Disease', (15, 20)) ('cancer', 'Phenotype', 'HP:0002664', (152, 158)) ('A289T', 'Var', (77, 82)) ('A289Rfs*9', 'Mutation', 'p.A289RfsX9', (94, 103)) 239 32067422 The second most mutated position was 598aa in the GF_recep_IV domain: 16 GBMs had G598V, 2 GBMs had G598A, and 1 esophageal squamous cell carcinoma (ESCC) had G598E. ('carcinoma', 'Phenotype', 'HP:0030731', (138, 147)) ('G598V', 'Mutation', 'rs139236063', (82, 87)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (124, 147)) ('G598A', 'Mutation', 'rs139236063', (100, 105)) ('esophageal squamous cell carcinoma', 'Disease', (113, 147)) ('esophageal squamous cell carcinoma', 'Disease', 'MESH:D000077277', (113, 147)) ('G598E', 'Mutation', 'p.G598E', (159, 164)) ('G598A', 'Var', (100, 105)) ('G598E', 'Var', (159, 164)) ('G598V', 'Var', (82, 87)) 240 32067422 Most mutations in LUAD (35 of 45 mutations) were located in the Pkinase_Tyr domain, especially at the positions of 858aa (8 samples with L858R) and 746-750aa (6 with E746_A750del, 2 with L747_E749del, and 1 with L747_T751del) (Figure 1E). ('E746_A750del', 'Var', (166, 178)) ('L747_T751del', 'Var', (212, 224)) ('L747_T751del', 'Mutation', 'p.747,751delT', (212, 224)) ('L747_E749del', 'Var', (187, 199)) ('LUAD', 'Phenotype', 'HP:0030078', (18, 22)) ('L858R', 'Mutation', 'rs121434568', (137, 142)) ('LUAD', 'Gene', (18, 22)) ('E746_A750del', 'Mutation', 'p.746,750delA', (166, 178)) ('L747_E749del', 'Mutation', 'p.747,749delE', (187, 199)) 242 32067422 All Level 1 mutations were found in NSCLC (28 in LUAD and 2 in lung squamous cell carcinoma [LUSC]), and these mutations were concentrated in exons 19-21, which included L858R, L861Q, G719A, S768I, L833F, E796_A750del, L747_E749del, E709_T710delinsD, L747_T751del, and T751_E758del (Figure 3). ('S768I', 'Var', (191, 196)) ('LUAD', 'Phenotype', 'HP:0030078', (49, 53)) ('L747_T751del', 'Var', (251, 263)) ('E709_T710delinsD', 'Mutation', 'p.709,710delinsT,D', (233, 249)) ('L833F', 'Mutation', 'p.L833F', (198, 203)) ('L858R', 'Mutation', 'rs121434568', (170, 175)) ('T751_E758del', 'Mutation', 'p.751,758delE', (269, 281)) ('E709_T710delinsD', 'Var', (233, 249)) ('lung squamous cell carcinoma', 'Phenotype', 'HP:0030359', (63, 91)) ('S768I', 'Mutation', 'rs121913465', (191, 196)) ('rat', 'Species', '10116', (133, 136)) ('L833F', 'Var', (198, 203)) ('NSCLC', 'Disease', 'MESH:D002289', (36, 41)) ('L747_T751del', 'Mutation', 'p.747,751delT', (251, 263)) ('G719A', 'Mutation', 'rs121913428', (184, 189)) ('L747_E749del', 'Mutation', 'p.747,749delE', (219, 231)) ('lung squamous cell carcinoma', 'Disease', 'MESH:D002294', (63, 91)) ('L858R', 'Var', (170, 175)) ('lung squamous cell carcinoma', 'Disease', (63, 91)) ('NSCLC', 'Disease', (36, 41)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (68, 91)) ('L747_E749del', 'Var', (219, 231)) ('E796_A750del', 'Var', (205, 217)) ('L861Q', 'Mutation', 'rs121913444', (177, 182)) ('NSCLC', 'Phenotype', 'HP:0030358', (36, 41)) ('carcinoma', 'Phenotype', 'HP:0030731', (82, 91)) ('G719A', 'Var', (184, 189)) ('E796_A750del', 'Mutation', 'p.796,750delA', (205, 217)) ('L861Q', 'Var', (177, 182)) ('T751_E758del', 'Var', (269, 281)) 246 32067422 The combined EGFR mutation and CNV frequency in all tumors was about 7.0% (746 of 11,314 patients, 748 of 11,410 samples). ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('tumors', 'Phenotype', 'HP:0002664', (52, 58)) ('tumors', 'Disease', (52, 58)) ('tumors', 'Disease', 'MESH:D009369', (52, 58)) ('patients', 'Species', '9606', (89, 97)) ('mutation', 'Var', (18, 26)) ('EGFR', 'Gene', (13, 17)) 248 32067422 Other cancers with dominantEGFR amplification but at much lower amplification rate included ESCA (13.0%), HNSC (9.4%), STAD (5.2%), LGG (5.4%), LUSC (6.4%), and BLCA (4.4%). ('LUSC', 'Disease', (144, 148)) ('cancer', 'Phenotype', 'HP:0002664', (6, 12)) ('ESCA', 'Disease', (92, 96)) ('dominantEGFR', 'Var', (19, 31)) ('amplification', 'Var', (32, 45)) ('BLCA', 'Disease', (161, 165)) ('HNSC', 'Phenotype', 'HP:0012288', (106, 110)) ('rat', 'Species', '10116', (78, 81)) ('LGG', 'Disease', (132, 135)) ('cancers', 'Disease', 'MESH:D009369', (6, 13)) ('cancers', 'Phenotype', 'HP:0002664', (6, 13)) ('cancers', 'Disease', (6, 13)) ('HNSC', 'Disease', (106, 110)) ('STAD', 'Disease', (119, 123)) 250 32067422 Over half of the mutations (47 of 82 mutations) in the Furin-like domain were accompanied by EGFR amplification, while nearly half of mutations (40 of 85 mutations) in the Pkinase_Tyr domain had copy gain. ('copy', 'MPA', (195, 199)) ('EGFR amplification', 'MPA', (93, 111)) ('mutations', 'Var', (37, 46)) ('Furin', 'Gene', (55, 60)) ('mutations', 'Var', (17, 26)) ('Furin', 'Gene', '5045', (55, 60)) 251 32067422 In order to evaluate the clinical significance of EGFR alterations, we analyzed patient survival for pan-cancer and for each cancer type separately by alteration status (mutations and CNVs alone or in combination). ('rat', 'Species', '10116', (155, 158)) ('alterations', 'Var', (55, 66)) ('mutations', 'Var', (170, 179)) ('cancer', 'Disease', (105, 111)) ('cancer', 'Disease', 'MESH:D009369', (105, 111)) ('cancer', 'Phenotype', 'HP:0002664', (125, 131)) ('cancer', 'Phenotype', 'HP:0002664', (105, 111)) ('rat', 'Species', '10116', (59, 62)) ('cancer', 'Disease', (125, 131)) ('cancer', 'Disease', 'MESH:D009369', (125, 131)) ('rat', 'Species', '10116', (141, 144)) ('patient', 'Species', '9606', (80, 87)) 252 32067422 When all tumors were analyzed together, patients with any EGFR alteration had significantly shorter median OS and DFS than those without EGFR alteration (both P < 0.001, Supplementary Figure S1). ('rat', 'Species', '10116', (67, 70)) ('rat', 'Species', '10116', (146, 149)) ('DFS', 'CPA', (114, 117)) ('patients', 'Species', '9606', (40, 48)) ('EGFR', 'Gene', (58, 62)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('tumors', 'Phenotype', 'HP:0002664', (9, 15)) ('tumors', 'Disease', (9, 15)) ('alteration', 'Var', (63, 73)) ('tumors', 'Disease', 'MESH:D009369', (9, 15)) ('shorter', 'NegReg', (92, 99)) ('median', 'MPA', (100, 106)) 253 32067422 When analysis was performed for CNV and mutation separately, the presence of either aberration was associated with shortened patients' OS and DFS (all P < 0.001, Supplementary Figure S2 and S3). ('DFS', 'CPA', (142, 145)) ('presence', 'Var', (65, 73)) ('rat', 'Species', '10116', (88, 91)) ('rat', 'Species', '10116', (53, 56)) ('shortened', 'NegReg', (115, 124)) ('patients', 'Species', '9606', (125, 133)) 254 32067422 For survival association in individual cancer types, only those cancer types with at least 10 tumor samples containing either EGFR mutations or CNVs were included in the analysis. ('tumor', 'Disease', 'MESH:D009369', (94, 99)) ('mutations', 'Var', (131, 140)) ('cancer', 'Disease', (39, 45)) ('EGFR', 'Gene', (126, 130)) ('cancer', 'Disease', 'MESH:D009369', (39, 45)) ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('cancer', 'Disease', (64, 70)) ('cancer', 'Disease', 'MESH:D009369', (64, 70)) ('tumor', 'Disease', (94, 99)) ('cancer', 'Phenotype', 'HP:0002664', (39, 45)) ('cancer', 'Phenotype', 'HP:0002664', (64, 70)) 255 32067422 Among patients with HNSC, LGG, or LUAD, EGFR amplification was associated with short survival (Figure 6A). ('LUAD', 'Phenotype', 'HP:0030078', (34, 38)) ('HNSC', 'Disease', (20, 24)) ('short survival', 'MPA', (79, 93)) ('EGFR', 'Gene', (40, 44)) ('patients', 'Species', '9606', (6, 14)) ('HNSC', 'Phenotype', 'HP:0012288', (20, 24)) ('LGG', 'Disease', (26, 29)) ('amplification', 'Var', (45, 58)) 257 32067422 Not surprisingly, EGFR-amplified tumors had significantly higher EGFR expression than those without EGFR amplification in all 9 cancers types (all P < 0.001, Figure 6C); however, there was no much EGFR expression difference between tumors with or without EGFR mutations except that EGFR mutation status was associated with significantly increased EGFR expression in GBM (P = 0.024) and LUAD (P = 0.001, Figure 6D). ('cancers', 'Disease', 'MESH:D009369', (128, 135)) ('cancers', 'Phenotype', 'HP:0002664', (128, 135)) ('mutation', 'Var', (287, 295)) ('cancers', 'Disease', (128, 135)) ('increased', 'PosReg', (337, 346)) ('tumors', 'Disease', 'MESH:D009369', (232, 238)) ('EGFR', 'Gene', (282, 286)) ('tumor', 'Phenotype', 'HP:0002664', (33, 38)) ('LUAD', 'Phenotype', 'HP:0030078', (386, 390)) ('tumor', 'Phenotype', 'HP:0002664', (232, 237)) ('cancer', 'Phenotype', 'HP:0002664', (128, 134)) ('tumors', 'Disease', 'MESH:D009369', (33, 39)) ('tumors', 'Phenotype', 'HP:0002664', (33, 39)) ('tumors', 'Phenotype', 'HP:0002664', (232, 238)) ('tumors', 'Disease', (33, 39)) ('EGFR expression', 'MPA', (347, 362)) ('tumors', 'Disease', (232, 238)) 277 32067422 In individual cancer type analysis, most tumor types had the similar patterns of methylation association with gene expression in promoter and gene body, but a few others had predominant hypomethylation in both regions, such as GBM, LUSC, PRAD, THYM, KIRC, and KICH (Supplementary Figure S5). ('cancer', 'Disease', (14, 20)) ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('methylation', 'Var', (81, 92)) ('tumor', 'Disease', (41, 46)) ('THYM', 'Phenotype', 'HP:0100522', (244, 248)) ('cancer', 'Phenotype', 'HP:0002664', (14, 20)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) ('hypomethylation', 'Var', (186, 201)) ('cancer', 'Disease', 'MESH:D009369', (14, 20)) ('gene expression', 'MPA', (110, 125)) 278 32067422 Survival analysis for all tumors with tumor type as a covariate only found 2 CpG sites (cg07311521 and cg16751451) significantly associated with OS, and both were in the promoter region (TSS1500). ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('tumor', 'Disease', (38, 43)) ('associated with', 'Reg', (129, 144)) ('cg16751451', 'Var', (103, 113)) ('tumor', 'Disease', 'MESH:D009369', (26, 31)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('tumors', 'Phenotype', 'HP:0002664', (26, 32)) ('tumor', 'Disease', 'MESH:D009369', (38, 43)) ('tumors', 'Disease', 'MESH:D009369', (26, 32)) ('cg07311521', 'Var', (88, 98)) ('tumor', 'Disease', (26, 31)) ('tumors', 'Disease', (26, 32)) 281 32067422 For both cancer types, the CpGs with significant associations were mostly located in the gene body, where higher CpG methylation was associated with a better outcome. ('cancer', 'Disease', (9, 15)) ('cancer', 'Phenotype', 'HP:0002664', (9, 15)) ('higher', 'PosReg', (106, 112)) ('methylation', 'Var', (117, 128)) ('cancer', 'Disease', 'MESH:D009369', (9, 15)) ('CpG', 'MPA', (113, 116)) 283 32067422 GBM had the highest rate of EGFR alterations, and amplification was the primary alteration. ('rat', 'Species', '10116', (84, 87)) ('rat', 'Species', '10116', (37, 40)) ('alterations', 'Var', (33, 44)) ('EGFR', 'MPA', (28, 32)) ('rat', 'Species', '10116', (20, 23)) 286 32067422 Other common tumor types with EGFR alterations include ESCA, HNSC, LGG, LUSC, and BLCA, all with similar characteristics: alteration frequency of about 5.0% and amplification as a dominant type. ('tumor', 'Disease', (13, 18)) ('alterations', 'Var', (35, 46)) ('EGFR', 'Gene', (30, 34)) ('alteration', 'Var', (122, 132)) ('LUSC', 'Disease', (72, 76)) ('BLCA', 'Disease', (82, 86)) ('HNSC', 'Phenotype', 'HP:0012288', (61, 65)) ('ESCA', 'Disease', (55, 59)) ('LGG', 'Disease', (67, 70)) ('rat', 'Species', '10116', (39, 42)) ('tumor', 'Disease', 'MESH:D009369', (13, 18)) ('rat', 'Species', '10116', (126, 129)) ('tumor', 'Phenotype', 'HP:0002664', (13, 18)) ('HNSC', 'Disease', (61, 65)) 288 32067422 On the other side of the spectrum, tumors such as DLBC and SKCM mainly had SNV mutations but rarely CNV; tumors including KIRC, MESO, THCA, THYM, UCS and UVM almost had no EGFR alterations. ('tumors', 'Disease', (105, 111)) ('THCA', 'Phenotype', 'HP:0002890', (134, 138)) ('THYM', 'Phenotype', 'HP:0100522', (140, 144)) ('tumors', 'Disease', 'MESH:D009369', (35, 41)) ('mutations', 'Var', (79, 88)) ('tumors', 'Disease', 'MESH:D009369', (105, 111)) ('THYM', 'Disease', (140, 144)) ('rat', 'Species', '10116', (181, 184)) ('UCS', 'Phenotype', 'HP:0002891', (146, 149)) ('tumors', 'Phenotype', 'HP:0002664', (35, 41)) ('tumors', 'Phenotype', 'HP:0002664', (105, 111)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('THCA', 'Disease', (134, 138)) ('UVM', 'Phenotype', 'HP:0007716', (154, 157)) ('tumors', 'Disease', (35, 41)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('UCS', 'Disease', (146, 149)) ('SNV', 'Gene', (75, 78)) ('MESO', 'Disease', (128, 132)) 289 32067422 Mutations in the Furin-like and Pkinase_Tyr domains accounted for most of EGFR single nucleotide or indel mutations. ('single nucleotide', 'Var', (79, 96)) ('Furin', 'Gene', (17, 22)) ('Mutations', 'Var', (0, 9)) ('Furin', 'Gene', '5045', (17, 22)) ('EGFR', 'Gene', (74, 78)) 290 32067422 However, the Pkinase_Tyr domain was far more important in terms of targeted therapy with TKIs as 90% EGFR mutations in LUAD occurred in this region, particularly the exon 19 deletion and the L858R point mutation in exon 21. ('L858R', 'Mutation', 'rs121434568', (191, 196)) ('L858R point', 'Var', (191, 202)) ('LUAD', 'Gene', (119, 123)) ('mutations', 'Var', (106, 115)) ('LUAD', 'Phenotype', 'HP:0030078', (119, 123)) ('exon 19 deletion', 'Var', (166, 182)) 291 32067422 Mutations in these regions are proven predictive markers for effective TKI therapy for NSCLC in clinical practice [7, 33, 34, 35], with significantly prolonged survival as compared with traditional combination chemotherapy [21, 36, 37]. ('NSCLC', 'Disease', (87, 92)) ('prolonged', 'PosReg', (150, 159)) ('survival', 'MPA', (160, 168)) ('NSCLC', 'Disease', 'MESH:D002289', (87, 92)) ('Mutations', 'Var', (0, 9)) ('NSCLC', 'Phenotype', 'HP:0030358', (87, 92)) 293 32067422 For other uncommon EGFR mutations in NSCLC, targeted therapy generated inconsistent results [34, 40, 41, 42]. ('NSCLC', 'Phenotype', 'HP:0030358', (37, 42)) ('EGFR', 'Gene', (19, 23)) ('NSCLC', 'Disease', (37, 42)) ('NSCLC', 'Disease', 'MESH:D002289', (37, 42)) ('mutations', 'Var', (24, 33)) ('rat', 'Species', '10116', (65, 68)) 294 32067422 In this large TCGA dataset, the combined alteration rate (amplification, deletion, or mutation) reached 67.3% in GBM. ('rat', 'Species', '10116', (52, 55)) ('deletion', 'Var', (73, 81)) ('rat', 'Species', '10116', (45, 48)) ('mutation', 'Var', (86, 94)) 296 32067422 Compared with LUAD, most EGFR mutations in GBM were located in extracellular domain or single-span transmembrane segment, which was known to be associated with tumorigenesis but not responsiveness to TKIs. ('associated with', 'Reg', (144, 159)) ('EGFR', 'Gene', (25, 29)) ('LUAD', 'Phenotype', 'HP:0030078', (14, 18)) ('tumor', 'Disease', 'MESH:D009369', (160, 165)) ('GBM', 'Gene', (43, 46)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('mutations', 'Var', (30, 39)) ('tumor', 'Disease', (160, 165)) 297 32067422 Although EGFR amplification was a predictor of poor prognosis for several cancer types, it was not significantly associated with GBM, consistent with the paradox phenomenon reported in the literature [46]. ('rat', 'Species', '10116', (193, 196)) ('cancer', 'Disease', 'MESH:D009369', (74, 80)) ('cancer', 'Disease', (74, 80)) ('EGFR', 'Gene', (9, 13)) ('GBM', 'Disease', (129, 132)) ('cancer', 'Phenotype', 'HP:0002664', (74, 80)) ('amplification', 'Var', (14, 27)) 298 32067422 Both amplification and high expression of EGFR were correlated with short patient survival in this dataset as reported previously [49, 50]. ('amplification', 'Var', (5, 18)) ('patient', 'Species', '9606', (74, 81)) ('EGFR', 'Gene', (42, 46)) ('short patient survival', 'CPA', (68, 90)) 299 32067422 More interestingly, we found that LGG had the highest number of CpGs whose methylation level was associated with patient survival (i.e., hypermethylation of CpGs in the gene body with better survival), which has not been reported before. ('patient', 'Species', '9606', (113, 120)) ('methylation', 'MPA', (75, 86)) ('hypermethylation', 'Var', (137, 153)) ('patient survival', 'CPA', (113, 129)) ('associated', 'Reg', (97, 107)) 300 32067422 COAD and PAAD had very few EGFR mutations in this TCGA dataset. ('PAAD', 'Phenotype', 'HP:0006725', (9, 13)) ('COAD', 'Disease', (0, 4)) ('EGFR', 'Gene', (27, 31)) ('mutations', 'Var', (32, 41)) ('COAD', 'Disease', 'MESH:D029424', (0, 4)) 301 32067422 However, high EGFR expression was significantly associated with short patient survival. ('patient', 'Species', '9606', (70, 77)) ('expression', 'MPA', (19, 29)) ('EGFR', 'Gene', (14, 18)) ('high', 'Var', (9, 13)) 303 32067422 Squamous cell carcinomas in the head and neck (HNSC), lung (LUSC), and esophagus (ESCA) have some commonalities: significantly increased EGFR expression, high frequency of EGFR amplification, and low rate of SNV/indel mutations. ('EGFR', 'Gene', (137, 141)) ('carcinomas', 'Phenotype', 'HP:0030731', (14, 24)) ('amplification', 'Var', (177, 190)) ('rat', 'Species', '10116', (200, 203)) ('Squamous cell carcinoma', 'Phenotype', 'HP:0002860', (0, 23)) ('EGFR', 'Gene', (172, 176)) ('Squamous cell carcinomas', 'Phenotype', 'HP:0002860', (0, 24)) ('HNSC', 'Phenotype', 'HP:0012288', (47, 51)) ('Squamous cell carcinomas', 'Disease', 'MESH:D002294', (0, 24)) ('Squamous cell carcinomas', 'Disease', (0, 24)) ('esophagus', 'Disease', (71, 80)) ('expression', 'MPA', (142, 152)) ('lung', 'Disease', (54, 58)) ('increased', 'PosReg', (127, 136)) ('carcinoma', 'Phenotype', 'HP:0030731', (14, 23)) 308 32067422 Our analysis provides a comprehensive view of EGFR mutation, abnormal expression, DNA methylation, and their interplay and clinical implications for 32 cancer types covering over ten thousand tumor samples. ('tumor', 'Disease', (192, 197)) ('cancer', 'Disease', 'MESH:D009369', (152, 158)) ('cancer', 'Disease', (152, 158)) ('mutation', 'Var', (51, 59)) ('EGFR', 'Gene', (46, 50)) ('tumor', 'Disease', 'MESH:D009369', (192, 197)) ('cancer', 'Phenotype', 'HP:0002664', (152, 158)) ('tumor', 'Phenotype', 'HP:0002664', (192, 197)) 309 32067422 While some alternations are involved more in tumorigenesis, others are more therapeutic. ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('tumor', 'Disease', (45, 50)) ('involved', 'Reg', (28, 36)) ('alternations', 'Var', (11, 23)) ('tumor', 'Disease', 'MESH:D009369', (45, 50)) 310 32067422 Some cancer types have a higher frequency of EGFR alternations where mutation, amplification, or abnormal expression is associated with outcome or indicated for clinical action. ('associated', 'Reg', (120, 130)) ('cancer', 'Disease', 'MESH:D009369', (5, 11)) ('EGFR', 'Gene', (45, 49)) ('alternations', 'Var', (50, 62)) ('cancer', 'Disease', (5, 11)) ('abnormal expression', 'MPA', (97, 116)) ('mutation', 'Var', (69, 77)) ('cancer', 'Phenotype', 'HP:0002664', (5, 11)) ('amplification', 'Var', (79, 92)) 355 31931809 performed a retrospective study which involved 99 patients with pheochromocytomas comparing TLA with PRA and stated that the mean operative time (117 vs 84 min) was significantly longer in the TLA group than in the PRA group, infering a similar result to our study. ('patients', 'Species', '9606', (50, 58)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (64, 81)) ('longer', 'PosReg', (179, 185)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (64, 80)) ('pheochromocytomas', 'Disease', (64, 81)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (64, 81)) ('TLA', 'Var', (193, 196)) 422 31849832 For example, in several cancers including endocrine pancreatic cancer cells, loss of fructose-1,6-bisphosphatase (FBP1) that catalyzes the hydrolysis of fructose 1,6-bisphosphate to fructose 6-phosphate, is associated with increased cancer stem cell like phenotype and metastasis. ('cancer', 'Phenotype', 'HP:0002664', (233, 239)) ('cancer', 'Disease', (24, 30)) ('metastasis', 'CPA', (269, 279)) ('cancer', 'Phenotype', 'HP:0002664', (24, 30)) ('FBP1', 'Gene', '2203', (114, 118)) ('cancer', 'Disease', 'MESH:D009369', (233, 239)) ('cancers', 'Phenotype', 'HP:0002664', (24, 31)) ('loss', 'Var', (77, 81)) ('cancers', 'Disease', (24, 31)) ('cancer', 'Disease', (63, 69)) ('cancer', 'Phenotype', 'HP:0002664', (63, 69)) ('endocrine pancreatic cancer', 'Disease', (42, 69)) ('cancer', 'Disease', 'MESH:D009369', (24, 30)) ('fructose 1,6-bisphosphate', 'Chemical', 'MESH:C029063', (153, 178)) ('increased', 'PosReg', (223, 232)) ('FBP1', 'Gene', (114, 118)) ('endocrine pancreatic cancer', 'Disease', 'MESH:D010190', (42, 69)) ('cancer', 'Disease', (233, 239)) ('cancer', 'Disease', 'MESH:D009369', (63, 69)) ('cancers', 'Disease', 'MESH:D009369', (24, 31)) ('fructose 6-phosphate', 'Chemical', 'MESH:C027618', (182, 202)) ('pancreatic cancer', 'Phenotype', 'HP:0002894', (52, 69)) 428 31849832 Similarly, Glut3 expression in non-small cell lung cancer is associated with increased glucose uptake, activation of EMT-TFs and tumor cell invasiveness. ('Glut3', 'Gene', '6515', (11, 16)) ('glucose', 'Chemical', 'MESH:D005947', (87, 94)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (35, 57)) ('Glut3', 'Gene', (11, 16)) ('glucose uptake', 'CPA', (87, 101)) ('EMT-TFs', 'CPA', (117, 124)) ('tumor', 'Disease', 'MESH:D009369', (129, 134)) ('non-small cell lung cancer', 'Phenotype', 'HP:0030358', (31, 57)) ('cancer', 'Phenotype', 'HP:0002664', (51, 57)) ('lung cancer', 'Disease', 'MESH:D008175', (46, 57)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('increased glucose', 'Phenotype', 'HP:0003074', (77, 94)) ('expression', 'Var', (17, 27)) ('increased', 'PosReg', (77, 86)) ('tumor', 'Disease', (129, 134)) ('activation', 'PosReg', (103, 113)) ('lung cancer', 'Disease', (46, 57)) ('lung cancer', 'Phenotype', 'HP:0100526', (46, 57)) 431 31849832 In intestinal-type gastric cancer cell lines, silencing LDHa downregulates Zeb2 and the synergistic decrease of LDHa and Zeb2 decreased cancer invasion, metastasis and poor prognosis. ('LDHa', 'Gene', (56, 60)) ('cancer', 'Phenotype', 'HP:0002664', (27, 33)) ('downregulates', 'NegReg', (61, 74)) ('silencing', 'Var', (46, 55)) ('gastric cancer', 'Phenotype', 'HP:0012126', (19, 33)) ('decrease', 'NegReg', (100, 108)) ('cancer', 'Disease', (136, 142)) ('intestinal-type gastric cancer', 'Disease', 'MESH:D013274', (3, 33)) ('poor prognosis', 'CPA', (168, 182)) ('cancer', 'Phenotype', 'HP:0002664', (136, 142)) ('Zeb2', 'Gene', (75, 79)) ('Zeb2', 'Gene', '9839', (75, 79)) ('cancer', 'Disease', 'MESH:D009369', (27, 33)) ('Zeb2', 'Gene', '9839', (121, 125)) ('Zeb2', 'Gene', (121, 125)) ('decreased', 'NegReg', (126, 135)) ('cancer', 'Disease', 'MESH:D009369', (136, 142)) ('intestinal-type gastric cancer', 'Disease', (3, 33)) ('LDHa', 'Gene', '3939', (112, 116)) ('metastasis', 'CPA', (153, 163)) ('LDHa', 'Gene', (112, 116)) ('LDHa', 'Gene', '3939', (56, 60)) ('cancer', 'Disease', (27, 33)) 432 31849832 Also, in bladder cell lines, high levels of LDHa stimulated EMT leading to migration and invasion of the tumor cells and silencing Ldha inhibited tumorogenecity in pancreatic cells in vivo. ('stimulated', 'PosReg', (49, 59)) ('Ldha', 'Gene', (131, 135)) ('silencing', 'Var', (121, 130)) ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('inhibited', 'NegReg', (136, 145)) ('LDHa', 'Gene', (44, 48)) ('tumor', 'Disease', (146, 151)) ('tumor', 'Disease', 'MESH:D009369', (105, 110)) ('Ldha', 'Gene', '3939', (131, 135)) ('pancreatic', 'Disease', 'MESH:D010195', (164, 174)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('EMT', 'CPA', (60, 63)) ('migration', 'CPA', (75, 84)) ('tumor', 'Disease', (105, 110)) ('pancreatic', 'Disease', (164, 174)) ('LDHa', 'Gene', '3939', (44, 48)) ('tumor', 'Disease', 'MESH:D009369', (146, 151)) 438 31849832 For example, mutation of mtDNA encoding Complex I subunits of the ETC increases the propensity of oncocytic thyroid cancers. ('oncocytic thyroid cancers', 'Disease', 'MESH:D013964', (98, 123)) ('mutation', 'Var', (13, 21)) ('oncocytic thyroid cancers', 'Disease', (98, 123)) ('increases', 'PosReg', (70, 79)) ('cancers', 'Phenotype', 'HP:0002664', (116, 123)) ('cancer', 'Phenotype', 'HP:0002664', (116, 122)) ('mtDNA', 'Gene', (25, 30)) 439 31849832 The importance of mtDNA mutations to metastasis is highlighted by experiments using cybrid technology, to distinguish the contribution of mitochondrial genome to cancer metastasis. ('cancer', 'Disease', 'MESH:D009369', (162, 168)) ('cancer', 'Disease', (162, 168)) ('cancer', 'Phenotype', 'HP:0002664', (162, 168)) ('mutations', 'Var', (24, 33)) ('mtDNA', 'Gene', (18, 23)) 441 31849832 ROS, a mitochondrial byproduct of the ETC, which can damage and mutate mtDNA, was also shown to induce metastasis of tumor cells. ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('mutate', 'Var', (64, 70)) ('ROS', 'Chemical', 'MESH:D017382', (0, 3)) ('tumor', 'Disease', (117, 122)) ('induce', 'PosReg', (96, 102)) ('mtDNA', 'Gene', (71, 76)) ('tumor', 'Disease', 'MESH:D009369', (117, 122)) 452 31849832 Silencing Pgc-1alpha impaired the invasion and metastasis without affecting the proliferation of the primary tumor. ('Pgc-1alpha', 'Gene', (10, 20)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('impaired', 'NegReg', (21, 29)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('Pgc-1alpha', 'Gene', '10891', (10, 20)) ('Silencing', 'Var', (0, 9)) ('tumor', 'Disease', (109, 114)) 454 31849832 Evident in endocrine cancers are mutations of TCA cycle operational enzymes, which are linked to EMT. ('TCA cycle operational enzymes', 'Enzyme', (46, 75)) ('cancer', 'Phenotype', 'HP:0002664', (21, 27)) ('endocrine cancers', 'Disease', (11, 28)) ('linked', 'Reg', (87, 93)) ('mutations', 'Var', (33, 42)) ('cancers', 'Phenotype', 'HP:0002664', (21, 28)) ('endocrine cancer', 'Phenotype', 'HP:0100568', (11, 27)) ('TCA', 'Chemical', 'MESH:D014233', (46, 49)) ('endocrine cancers', 'Disease', 'MESH:D004701', (11, 28)) 455 31849832 The neuroendocrine tumors, pheochromocytoma and paragangliomas are associated with mutation of succinate dehydrogenase (SDH) that converts succinate to fumarate. ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (4, 25)) ('paragangliomas', 'Disease', 'MESH:D010235', (48, 62)) ('paraganglioma', 'Phenotype', 'HP:0002668', (48, 61)) ('paragangliomas', 'Phenotype', 'HP:0002668', (48, 62)) ('mutation', 'Var', (83, 91)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (27, 61)) ('SDH', 'Gene', '6390', (120, 123)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (4, 25)) ('succinate', 'Chemical', 'MESH:D019802', (95, 104)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (27, 43)) ('succinate dehydrogenase', 'Gene', (95, 118)) ('SDH', 'Gene', (120, 123)) ('paragangliomas', 'Disease', (48, 62)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('neuroendocrine tumors', 'Disease', (4, 25)) ('associated', 'Reg', (67, 77)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (9, 24)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('succinate', 'Chemical', 'MESH:D019802', (139, 148)) ('fumarate', 'Chemical', 'MESH:D005650', (152, 160)) ('succinate dehydrogenase', 'Gene', '6390', (95, 118)) 456 31849832 In particular, a mutation of SDHb a subunit of SDH, is thought to alter glucose and glutamine utilization and cause epigenetic modifications that results in EMT. ('SDHb', 'Gene', '6390', (29, 33)) ('results in', 'Reg', (146, 156)) ('glucose', 'Chemical', 'MESH:D005947', (72, 79)) ('SDH', 'Gene', (47, 50)) ('mutation', 'Var', (17, 25)) ('glutamine', 'Chemical', 'MESH:D005973', (84, 93)) ('epigenetic modifications', 'MPA', (116, 140)) ('alter', 'Reg', (66, 71)) ('SDH', 'Gene', '6390', (29, 32)) ('cause', 'Reg', (110, 115)) ('EMT', 'CPA', (157, 160)) ('SDH', 'Gene', '6390', (47, 50)) ('SDHb', 'Gene', (29, 33)) ('SDH', 'Gene', (29, 32)) 457 31849832 Moreover, SDH mutation is hypothesized to cause consumption of extracellular pyruvate to maintain the Warburg effect conducive for cell growth and thus EMT potential. ('SDH', 'Gene', '6390', (10, 13)) ('pyruvate', 'Chemical', 'MESH:D019289', (77, 85)) ('EMT potential', 'CPA', (152, 165)) ('SDH', 'Gene', (10, 13)) ('cause', 'Reg', (42, 47)) ('Warburg effect', 'MPA', (102, 116)) ('mutation', 'Var', (14, 22)) ('consumption of extracellular pyruvate', 'MPA', (48, 85)) 460 31849832 SDHb mutations cause upregulation of metastatic genes and epigenetic silencing of cell adhesion protein, keratin 19, leading to EMT and rendering the tumor cells more aggressive and invasive. ('keratin 19', 'Gene', (105, 115)) ('EMT', 'CPA', (128, 131)) ('epigenetic silencing', 'Var', (58, 78)) ('SDHb', 'Gene', (0, 4)) ('SDHb', 'Gene', '6390', (0, 4)) ('mutations', 'Var', (5, 14)) ('tumor', 'Disease', 'MESH:D009369', (150, 155)) ('metastatic genes', 'Gene', (37, 53)) ('upregulation', 'PosReg', (21, 33)) ('keratin 19', 'Gene', '3880', (105, 115)) ('tumor', 'Phenotype', 'HP:0002664', (150, 155)) ('aggressive', 'CPA', (167, 177)) ('more', 'PosReg', (162, 166)) ('invasive', 'CPA', (182, 190)) ('tumor', 'Disease', (150, 155)) 461 31849832 Mutation of another important enzyme of the TCA cycle, fumarate hydratase (FH), which converts fumarate to malate, is also implicated in metastasis of pheochromocytoma and paraganglioma. ('TCA', 'Chemical', 'MESH:D014233', (44, 47)) ('paraganglioma', 'Phenotype', 'HP:0002668', (172, 185)) ('Mutation', 'Var', (0, 8)) ('fumarate', 'Chemical', 'MESH:D005650', (95, 103)) ('FH', 'Gene', '2271', (75, 77)) ('implicated', 'Reg', (123, 133)) ('fumarate', 'Chemical', 'MESH:D005650', (55, 63)) ('fumarate hydratase', 'Gene', '2271', (55, 73)) ('metastasis of pheochromocytoma and paraganglioma', 'Disease', 'MESH:D009362', (137, 185)) ('malate', 'Chemical', 'MESH:C030298', (107, 113)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (151, 167)) ('fumarate hydratase', 'Gene', (55, 73)) 464 31849832 Recently, fumarate buildup in renal cancers has been shown to cause EMT by inhibiting Tet dioxygenase mediated demethyation of antimetastatic miR-200 which is a known activator of metastasis and EMT. ('renal cancers', 'Disease', (30, 43)) ('inhibiting', 'NegReg', (75, 85)) ('Tet', 'Chemical', 'MESH:C010349', (86, 89)) ('cancers', 'Phenotype', 'HP:0002664', (36, 43)) ('EMT', 'Disease', (68, 71)) ('fumarate', 'Chemical', 'MESH:D005650', (10, 18)) ('cause', 'Reg', (62, 67)) ('miR-200', 'Chemical', '-', (142, 149)) ('Tet dioxygenase mediated demethyation', 'MPA', (86, 123)) ('renal cancers', 'Disease', 'MESH:D007680', (30, 43)) ('cancer', 'Phenotype', 'HP:0002664', (36, 42)) ('fumarate buildup', 'Var', (10, 26)) ('oxygen', 'Chemical', 'MESH:D010100', (92, 98)) 466 31849832 An oncometabolite formed due to mutation of isocitrate dehydrogenase, 2D hydroxyglutarate, induced metastasis and EMT in colorectal cancers by increasing Zeb1 expression. ('Zeb1', 'Gene', '6935', (154, 158)) ('EMT', 'CPA', (114, 117)) ('Zeb1', 'Gene', (154, 158)) ('isocitrate dehydrogenase', 'Gene', (44, 68)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (121, 138)) ('colorectal cancers', 'Disease', 'MESH:D015179', (121, 139)) ('2D hydroxyglutarate', 'Chemical', '-', (70, 89)) ('increasing', 'PosReg', (143, 153)) ('cancer', 'Phenotype', 'HP:0002664', (132, 138)) ('isocitrate dehydrogenase', 'Gene', '3417', (44, 68)) ('colorectal cancers', 'Disease', (121, 139)) ('expression', 'MPA', (159, 169)) ('metastasis', 'CPA', (99, 109)) ('induced', 'PosReg', (91, 98)) ('mutation', 'Var', (32, 40)) ('cancers', 'Phenotype', 'HP:0002664', (132, 139)) 484 31849832 High FASN expression levels in pancreatic cancer and papillary thyroid carcinoma patients is associated with poor survival rate, but its importance to EMT is unknown. ('survival', 'MPA', (114, 122)) ('FASN', 'Gene', '2194', (5, 9)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (63, 80)) ('papillary thyroid carcinoma', 'Disease', (53, 80)) ('High', 'Var', (0, 4)) ('poor', 'NegReg', (109, 113)) ('expression levels', 'MPA', (10, 27)) ('cancer', 'Phenotype', 'HP:0002664', (42, 48)) ('pancreatic cancer', 'Disease', (31, 48)) ('papillary thyroid carcinoma', 'Disease', 'MESH:D000077273', (53, 80)) ('patients', 'Species', '9606', (81, 89)) ('pancreatic cancer', 'Disease', 'MESH:D010190', (31, 48)) ('carcinoma', 'Phenotype', 'HP:0030731', (71, 80)) ('papillary thyroid carcinoma', 'Phenotype', 'HP:0002895', (53, 80)) ('pancreatic cancer', 'Phenotype', 'HP:0002894', (31, 48)) ('FASN', 'Gene', (5, 9)) 490 31849832 Importantly, inhibition of SCD in prostate cancer blocked tumor gowth and survival. ('survival', 'CPA', (74, 82)) ('tumor', 'Phenotype', 'HP:0002664', (58, 63)) ('SCD', 'Gene', (27, 30)) ('blocked', 'NegReg', (50, 57)) ('inhibition', 'Var', (13, 23)) ('prostate cancer', 'Disease', (34, 49)) ('SCD', 'Gene', '6319', (27, 30)) ('tumor gowth', 'Disease', (58, 69)) ('cancer', 'Phenotype', 'HP:0002664', (43, 49)) ('prostate cancer', 'Disease', 'MESH:D011471', (34, 49)) ('prostate cancer', 'Phenotype', 'HP:0012125', (34, 49)) ('tumor gowth', 'Disease', 'MESH:D009369', (58, 69)) 495 31849832 The importance of PM composition affecting EMT is also reinforced by the influence of cholesterol, whereby altering cholesterol content of plasma membrane is associated with increased mesenchymal stem cell like phenotype. ('cholesterol content', 'MPA', (116, 135)) ('mesenchymal stem cell like phenotype', 'CPA', (184, 220)) ('cholesterol', 'Chemical', 'MESH:D002784', (116, 127)) ('altering', 'Var', (107, 115)) ('cholesterol', 'Chemical', 'MESH:D002784', (86, 97)) ('increased', 'PosReg', (174, 183)) 504 31620170 Frequent Mutations of VHL Gene and the Clinical Phenotypes in the Largest Chinese Cohort With Von Hippel-Lindau Disease Von Hippel-Lindau (VHL) disease is a rare autosomal-dominant inherited tumor syndrome. ('Mutations', 'Var', (9, 18)) ('autosomal-dominant inherited tumor syndrome', 'Disease', (162, 205)) ('VHL', 'Gene', (22, 25)) ('VHL', 'Gene', (139, 142)) ('Von Hippel-Lindau Disease', 'Disease', (94, 119)) ('autosomal-dominant inherited tumor syndrome', 'Disease', 'None', (162, 205)) ('VHL', 'Gene', '7428', (139, 142)) ('VHL', 'Gene', '7428', (22, 25)) ('tumor', 'Phenotype', 'HP:0002664', (191, 196)) ('Von Hippel-Lindau Disease', 'Disease', 'MESH:D006623', (94, 119)) ('Von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (120, 151)) 505 31620170 We screened 540 patients from 187 unrelated Chinese VHL families for 19 frequent VHL mutations. ('mutations', 'Var', (85, 94)) ('patients', 'Species', '9606', (16, 24)) ('VHL', 'Gene', (81, 84)) 509 31620170 193300) is an autosomal-dominant familial neoplastic condition that is caused by germline mutations in the VHL gene located on chromosome 3p25-26. ('mutations', 'Var', (90, 99)) ('caused by', 'Reg', (71, 80)) ('neoplastic condition', 'Phenotype', 'HP:0002664', (42, 62)) ('familial neoplastic condition', 'Disease', 'MESH:C566834', (33, 62)) ('familial neoplastic condition', 'Disease', (33, 62)) ('VHL', 'Gene', (107, 110)) 517 31620170 For example, a retrospective study that included 63 VHL patients from two large VHL kindreds (family 1: Y112H mutation and family 2: Y98H mutation) with pheochromocytoma/paraganglioma found that pheochromocytoma expressivity differed by genotype. ('patients', 'Species', '9606', (56, 64)) ('pheochromocytoma', 'Disease', (153, 169)) ('Y112H mutation', 'Var', (104, 118)) ('Y98H mutation', 'Var', (133, 146)) ('paraganglioma', 'Disease', 'MESH:D010235', (170, 183)) ('Y112H', 'Mutation', 'p.Y112H', (104, 109)) ('Y98H', 'Mutation', 'p.Y98H', (133, 137)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (153, 169)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (153, 169)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (195, 211)) ('paraganglioma', 'Phenotype', 'HP:0002668', (170, 183)) ('pheochromocytoma', 'Disease', (195, 211)) ('paraganglioma', 'Disease', (170, 183)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (195, 211)) 518 31620170 evaluated the genotype-phenotype correlations in 573 VHL patients and confirmed that pheochromocytoma was linked to VHL missense mutations. ('missense mutations', 'Var', (120, 138)) ('patients', 'Species', '9606', (57, 65)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (85, 101)) ('VHL', 'Gene', (116, 119)) ('pheochromocytoma', 'Disease', (85, 101)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (85, 101)) ('linked', 'Reg', (106, 112)) 519 31620170 Additionally, the age at onset for VHL syndrome was significantly earlier (P = 0.001) and the age-related risks of RA and RCC were higher (P = 0.022 and P = 0.0008, respectively) for individuals with nonsense or frameshift mutations compared to those with deletions. ('nonsense', 'Var', (200, 208)) ('VHL syndrome', 'Disease', 'MESH:D006623', (35, 47)) ('earlier', 'PosReg', (66, 73)) ('RCC', 'Disease', 'MESH:D002292', (122, 125)) ('VHL syndrome', 'Disease', (35, 47)) ('frameshift mutations', 'Var', (212, 232)) ('RCC', 'Disease', (122, 125)) ('RA', 'Disease', 'MESH:D012173', (115, 117)) ('higher', 'PosReg', (131, 137)) 520 31620170 Due to the rarity of VHL disease, studies on the correlations between the frequent mutations of the VHL gene and clinical phenotypes are relatively scarce, with the majority being case reports or studies involving a limited number of VHL patients or families. ('mutations', 'Var', (83, 92)) ('VHL disease', 'Disease', 'MESH:D006623', (21, 32)) ('VHL', 'Gene', (100, 103)) ('patients', 'Species', '9606', (238, 246)) ('VHL disease', 'Disease', (21, 32)) 523 31620170 This study improves our understanding of how frequent mutations of the VHL gene affect the age at onset for each susceptible organ and their impact on prognosis in a Chinese population and provides a more accurate resource for genetic counseling and the monitoring of VHL patients. ('affect', 'Reg', (80, 86)) ('VHL', 'Gene', (71, 74)) ('age at onset for each susceptible organ', 'MPA', (91, 130)) ('mutations', 'Var', (54, 63)) ('patients', 'Species', '9606', (272, 280)) ('impact', 'Reg', (141, 147)) 527 31620170 However, at least one patient from a family confirmed the presence of a VHL mutation through genetic testing. ('mutation', 'Var', (76, 84)) ('patient', 'Species', '9606', (22, 29)) ('VHL', 'Gene', (72, 75)) 533 31620170 For each type of mutation, the mean age at onset of VHL-associated susceptible organs (CHB, RA, RCC, PCT, PHEO, and GS) and the mean age at death were calculated as the mean +- standard deviation. ('RCC', 'Disease', (96, 99)) ('VHL-associated', 'Gene', (52, 66)) ('RA', 'Disease', 'MESH:D012173', (92, 94)) ('PHEO', 'Disease', 'MESH:D010673', (106, 110)) ('mutation', 'Var', (17, 25)) ('PHEO', 'Disease', (106, 110)) ('GS', 'Disease', 'MESH:D011125', (116, 118)) ('CHB', 'Phenotype', 'HP:0006880', (87, 90)) ('RCC', 'Disease', 'MESH:D002292', (96, 99)) 535 31620170 A total of 540 patients from 187 unrelated Chinese VHL families were included in our database, and 126 different types of VHL mutations were identified. ('VHL', 'Gene', (122, 125)) ('patients', 'Species', '9606', (15, 23)) ('mutations', 'Var', (126, 135)) 539 31620170 For CHB, both the c.481C > T p.Arg161stop (group 16) and c.486C > G p.Cys162Trp (group 17) mutations had a high penetrance of approximately 80.0% (12/15). ('p.Arg161stop', 'Var', (29, 41)) ('CHB', 'Gene', (4, 7)) ('CHB', 'Phenotype', 'HP:0006880', (4, 7)) ('c.481C > T p.Arg161stop', 'Mutation', 'c.481,161C>T,R,X', (18, 41)) ('p.Cys162Trp', 'SUBSTITUTION', 'None', (68, 79)) ('p.Cys162Trp', 'Var', (68, 79)) ('c.481C > T p.Arg161stop', 'Var', (18, 41)) 540 31620170 The mean age at onset of CHB for the c.481C > T p.Arg161stop (group 16) mutation was 27.4 +- 9.4 years (range = 14-40 years), while for the c.486C > G p.Cys162Trp (group 17) mutation, it was 31.4 +- 10.0 years (range = 12-49 years). ('c.486C > G', 'Var', (140, 150)) ('c.481C > T p.Arg161stop', 'Var', (37, 60)) ('CHB', 'Disease', (25, 28)) ('CHB', 'Phenotype', 'HP:0006880', (25, 28)) ('c.481C > T p.Arg161stop', 'Mutation', 'c.481,161C>T,R,X', (37, 60)) ('p.Cys162Trp', 'SUBSTITUTION', 'None', (151, 162)) ('p.Cys162Trp', 'Var', (151, 162)) ('p.Arg161stop', 'Var', (48, 60)) 541 31620170 For RCC, the mean ages at onset for the c.269A > T p.Asn90Ile (group 8) and c.486C > G p.Cys162Trp (group 17) mutations were 41.5 +- 15.5 years and 41.8 +- 10.3 years, while the penetrance was 26.7% (4/15) and 53.3% (8/15), respectively. ('p.Cys162Trp', 'SUBSTITUTION', 'None', (87, 98)) ('p.Cys162Trp', 'Var', (87, 98)) ('p.Asn90Ile', 'Var', (51, 61)) ('c.486C > G', 'Var', (76, 86)) ('p.Asn90Ile', 'SUBSTITUTION', 'None', (51, 61)) ('c.269A > T', 'Var', (40, 50)) ('RCC', 'Disease', (4, 7)) ('RCC', 'Disease', 'MESH:D002292', (4, 7)) 542 31620170 There were two types of missense mutations in group 1 located in the 194 mutation site, c.194C > T p.Ser65Leu and c.194C > G p.Ser65Trp, but the clinical phenotypes were different between these two mutational subgroups. ('p.Ser65Trp', 'SUBSTITUTION', 'None', (125, 135)) ('p.Ser65Trp', 'Var', (125, 135)) ('p.Ser65Leu', 'SUBSTITUTION', 'None', (99, 109)) ('p.Ser65Leu', 'Var', (99, 109)) ('c.194C > T', 'Var', (88, 98)) 543 31620170 Six major VHL-related lesions (CHB, RA, RCC, PCT, PHEO, and GS) were observed in the c.194C > T p.Ser65Leu mutational subgroup, while only three VHL lesions (CHB, RCC, and PCT) presented in the c.194C > G p.Ser65Trp mutational subgroup. ('p.Ser65Leu', 'Var', (96, 106)) ('PHEO', 'Disease', (50, 54)) ('RCC', 'Disease', 'MESH:D002292', (163, 166)) ('RCC', 'Disease', (163, 166)) ('RA', 'Disease', 'MESH:D012173', (36, 38)) ('p.Ser65Trp', 'SUBSTITUTION', 'None', (205, 215)) ('CHB', 'Phenotype', 'HP:0006880', (158, 161)) ('RCC', 'Disease', (40, 43)) ('p.Ser65Trp', 'Var', (205, 215)) ('p.Ser65Leu', 'SUBSTITUTION', 'None', (96, 106)) ('GS', 'Disease', 'MESH:D011125', (60, 62)) ('RCC', 'Disease', 'MESH:D002292', (40, 43)) ('CHB', 'Phenotype', 'HP:0006880', (31, 34)) ('VHL-related', 'Disease', (10, 21)) ('PHEO', 'Disease', 'MESH:D010673', (50, 54)) 544 31620170 The mean age at onset for the common VHL lesions in the c.194C > T p.Ser65Leu mutational subgroup was older than that of the c.194C > G p.Ser65Trp mutational subgroup ( Figures 2A-D ). ('common VHL lesions', 'Disease', (30, 48)) ('p.Ser65Leu', 'Var', (67, 77)) ('p.Ser65Trp', 'SUBSTITUTION', 'None', (136, 146)) ('p.Ser65Trp', 'Var', (136, 146)) ('p.Ser65Leu', 'SUBSTITUTION', 'None', (67, 77)) 545 31620170 Both c.262T > C p.Trp88Arg and c.263G > C p.Trp88Ser were missense mutations, while c.263G > A p.Trp88Stop resulted in a nonsense mutation. ('p.Trp88Ser', 'Var', (42, 52)) ('p.Trp88Arg', 'SUBSTITUTION', 'None', (16, 26)) ('p.Trp88Ser', 'SUBSTITUTION', 'None', (42, 52)) ('p.Trp88Arg', 'Var', (16, 26)) ('p.Trp88Stop', 'SUBSTITUTION', 'None', (95, 106)) ('p.Trp88Stop', 'Var', (95, 106)) ('c.263G > C', 'Var', (31, 41)) 546 31620170 A comparison was made between the mean age at onset for CHB in these three subgroups and found that the c.262T > C p.Trp88Arg mutational group was older than that of the c.263G > C p.Trp88Ser mutational subgroup (P = 0.0152) and the c.263G > A p.Trp88Stop mutational subgroup (P = 0.0232) ( Figure 2E ). ('p.Trp88Ser', 'Var', (181, 191)) ('p.Trp88Ser', 'SUBSTITUTION', 'None', (181, 191)) ('p.Trp88Stop', 'SUBSTITUTION', 'None', (244, 255)) ('p.Trp88Arg', 'Var', (115, 125)) ('p.Trp88Stop', 'Var', (244, 255)) ('CHB', 'Phenotype', 'HP:0006880', (56, 59)) ('p.Trp88Arg', 'SUBSTITUTION', 'None', (115, 125)) 547 31620170 However, the CHB-associated age at onset for the c.263G > A p.Trp88Stop mutational subgroup was younger than the c.263G > C p.Trp88Ser mutational subgroup, but the difference was not significant (P = 0.481) ( Figure 2E ). ('CHB', 'Phenotype', 'HP:0006880', (13, 16)) ('CHB-associated', 'Disease', (13, 27)) ('p.Trp88Ser', 'SUBSTITUTION', 'None', (124, 134)) ('p.Trp88Ser', 'Var', (124, 134)) ('p.Trp88Stop', 'SUBSTITUTION', 'None', (60, 71)) ('p.Trp88Stop', 'Var', (60, 71)) 548 31620170 In groups 18 and 19, the c.499C > T p.Arg167Trp and c.500G > A p.Arg167Gln mutations were located in codon 167 (Arg). ('p.Arg167Gln', 'Var', (63, 74)) ('p.Arg167Gln', 'SUBSTITUTION', 'None', (63, 74)) ('p.Arg167Trp', 'Var', (36, 47)) ('p.Arg167Trp', 'SUBSTITUTION', 'None', (36, 47)) 550 31620170 Kaplan-Meier curves were used to describe the survival of patients with different VHL mutations, and the results are presented in Figure 3A . ('patients', 'Species', '9606', (58, 66)) ('mutations', 'Var', (86, 95)) ('VHL', 'Gene', (82, 85)) 554 31620170 Screening for mutations in the VHL gene helps to clarify the diagnosis of asymptomatic first-degree relatives, thereby improving patient outcomes through early disease surveillance. ('VHL', 'Gene', (31, 34)) ('patient', 'Species', '9606', (129, 136)) ('mutations', 'Var', (14, 23)) ('improving', 'PosReg', (119, 128)) 556 31620170 In total, we screened 540 patients from 187 unrelated VHL families and identified 126 different VHL mutations. ('mutations', 'Var', (100, 109)) ('VHL', 'Gene', (96, 99)) ('patients', 'Species', '9606', (26, 34)) 558 31620170 The mutation hotspots of the VHL gene that are already known include Leu178, Cys162, Arg167, Asn78, Pro86, and Tyr98 and have a frequency of approximately 3% to 17%. ('Asn78', 'Chemical', 'MESH:C010809', (93, 98)) ('Tyr98', 'Var', (111, 116)) ('Leu178', 'Var', (69, 75)) ('Asn78', 'Var', (93, 98)) ('VHL', 'Gene', (29, 32)) ('Cys', 'Chemical', 'MESH:C046557', (77, 80)) ('Cys162', 'Var', (77, 83)) ('Pro86', 'Var', (100, 105)) ('Arg167', 'Var', (85, 91)) 559 31620170 reported that Glu70Lys was a high-frequency VHL germline mutation in the Korean population, with nine unrelated patients [16.4% (9/55)] who had the same amino-acid alteration at codon 70 (Glu70Lys) and exhibited VHL type 1 phenotypes. ('Glu70Lys', 'Var', (14, 22)) ('VHL', 'Gene', (44, 47)) ('Glu70Lys', 'Mutation', 'p.E70K', (188, 196)) ('patients', 'Species', '9606', (112, 120)) ('Glu70Lys', 'Mutation', 'p.E70K', (14, 22)) ('Glu70Lys', 'Var', (188, 196)) 560 31620170 Patients from different ethnic backgrounds that have the same VHL germline mutation may also develop distinct phenotypes. ('germline mutation', 'Var', (66, 83)) ('Patients', 'Species', '9606', (0, 8)) ('VHL', 'Gene', (62, 65)) ('develop', 'Reg', (93, 100)) 561 31620170 For example, found four mutations (Arg113Stop, Gln132Stop, Leu158Val, and Cys162Tyr) in Japanese families with the VHL type 2 phenotype, whereas reported that these mutations were associated with the VHL type 1 phenotype in Western populations. ('Gln132Stop', 'Var', (47, 57)) ('Leu158Val', 'Var', (59, 68)) ('VHL type', 'Disease', (115, 123)) ('Arg113Stop', 'Var', (35, 45)) ('Cys162Tyr', 'SUBSTITUTION', 'None', (74, 83)) ('Gln132Stop', 'Mutation', 'p.Q132X', (47, 57)) ('Arg113Stop', 'Mutation', 'p.R113X', (35, 45)) ('Leu158Val', 'Chemical', 'MESH:C041390', (59, 68)) ('Cys162Tyr', 'Var', (74, 83)) 563 31620170 Studies in Western populations showed that the mutation of c.500G > A p.Arg167Gln was associated with RCC and renal cysts, indicating that this mutation was associated with the VHL type 1 phenotype. ('p.Arg167Gln', 'Var', (70, 81)) ('renal cysts', 'Disease', (110, 121)) ('associated', 'Reg', (86, 96)) ('renal cysts', 'Disease', 'MESH:D007674', (110, 121)) ('renal cyst', 'Phenotype', 'HP:0000107', (110, 120)) ('RCC', 'Disease', 'MESH:D002292', (102, 105)) ('RCC', 'Disease', (102, 105)) ('renal cysts', 'Phenotype', 'HP:0000107', (110, 121)) ('p.Arg167Gln', 'SUBSTITUTION', 'None', (70, 81)) 564 31620170 However, according to our database, we found that this mutation was also related to PHEO (37.5%, 9 of 24), which indicated that the phenotype of the c.500G > A p.Arg167Gln mutation also differs in different ethnic backgrounds. ('PHEO', 'Disease', 'MESH:D010673', (84, 88)) ('PHEO', 'Disease', (84, 88)) ('p.Arg167Gln', 'Var', (160, 171)) ('p.Arg167Gln', 'SUBSTITUTION', 'None', (160, 171)) 565 31620170 For example, in group 1, two missense mutations occurred in the 194 mutation site, c.194C > T p.Ser65Leu and c.194C > G p.Ser65Trp. ('p.Ser65Leu', 'Var', (94, 104)) ('p.Ser65Leu', 'SUBSTITUTION', 'None', (94, 104)) ('p.Ser65Trp', 'SUBSTITUTION', 'None', (120, 130)) ('p.Ser65Trp', 'Var', (120, 130)) ('c.194C > T', 'Var', (83, 93)) 566 31620170 Intriguingly, the six major VHL-related lesions (CHB, RA, RCC, PCT, PHEO, and GS) were observed in the c.194C > T p.Ser65Leu mutational subgroup, while only three VHL lesions (CHB, RCC, and PCT) presented in the c.194C > G p.Ser65Trp mutational subgroup. ('p.Ser65Trp', 'Var', (223, 233)) ('VHL-related', 'Disease', (28, 39)) ('RA', 'Disease', 'MESH:D012173', (54, 56)) ('PHEO', 'Disease', 'MESH:D010673', (68, 72)) ('p.Ser65Leu', 'Var', (114, 124)) ('PHEO', 'Disease', (68, 72)) ('PCT', 'Disease', (63, 66)) ('GS', 'Disease', 'MESH:D011125', (78, 80)) ('p.Ser65Leu', 'SUBSTITUTION', 'None', (114, 124)) ('RCC', 'Disease', (58, 61)) ('CHB', 'Phenotype', 'HP:0006880', (49, 52)) ('CHB', 'Phenotype', 'HP:0006880', (176, 179)) ('p.Ser65Trp', 'SUBSTITUTION', 'None', (223, 233)) ('RCC', 'Disease', 'MESH:D002292', (58, 61)) ('RCC', 'Disease', 'MESH:D002292', (181, 184)) ('RCC', 'Disease', (181, 184)) 568 31620170 also reported on the phenotypes of two distinct missense mutations in the same codon of the VHL gene (c.334T > A p.Tyr112Asn and c.334T > C p.Tyr112His). ('p.Tyr112Asn', 'Var', (113, 124)) ('VHL', 'Gene', (92, 95)) ('p.Tyr112Asn', 'SUBSTITUTION', 'None', (113, 124)) ('p.Tyr112His', 'SUBSTITUTION', 'None', (140, 151)) ('p.Tyr112His', 'Var', (140, 151)) 569 31620170 Thirteen patients were found with the c.334T > A p.Tyr112Asn mutation, seven of whom had RCC, and one of these patients had a pheochromocytoma, which suggests that this type of mutation causes the VHL type 1 phenotype, as most of the patients presented with RCC. ('presented', 'Reg', (243, 252)) ('RCC', 'Disease', (258, 261)) ('RCC', 'Disease', 'MESH:D002292', (258, 261)) ('patients', 'Species', '9606', (9, 17)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (126, 142)) ('p.Tyr112Asn', 'SUBSTITUTION', 'None', (49, 60)) ('RCC', 'Disease', (89, 92)) ('causes', 'Reg', (186, 192)) ('patients', 'Species', '9606', (234, 242)) ('p.Tyr112Asn', 'Var', (49, 60)) ('RCC', 'Disease', 'MESH:D002292', (89, 92)) ('pheochromocytoma', 'Disease', (126, 142)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (126, 142)) ('VHL type 1 phenotype', 'Disease', (197, 217)) ('patients', 'Species', '9606', (111, 119)) 570 31620170 Conversely, the c.334T > C p.Tyr112His mutation was associated with the VHL type 2A phenotype, as every affected individual in two families (22 patients) had PHEO but did not have RCC. ('p.Tyr112His', 'SUBSTITUTION', 'None', (27, 38)) ('RCC', 'Disease', 'MESH:D002292', (180, 183)) ('p.Tyr112His', 'Var', (27, 38)) ('RCC', 'Disease', (180, 183)) ('PHEO', 'Disease', 'MESH:D010673', (158, 162)) ('patients', 'Species', '9606', (144, 152)) ('PHEO', 'Disease', (158, 162)) ('VHL type 2A', 'Disease', (72, 83)) 571 31620170 evaluated the clinical presentation of 49 family members from three generations of a Turkish family and identified the VHL p.A149S mutation. ('VHL', 'Gene', (119, 122)) ('p.A149S', 'Var', (123, 130)) ('p.A149S', 'Mutation', 'p.A149S', (123, 130)) 579 31620170 Recently, reported genotype-phenotype correlations in VHL disease based on the alteration of a HIF-alpha binding site in the VHL protein. ('VHL disease', 'Disease', (54, 65)) ('HIF-alpha', 'Protein', (95, 104)) ('VHL disease', 'Disease', 'MESH:D006623', (54, 65)) ('alteration', 'Var', (79, 89)) 580 31620170 analyzed the genotype-phenotype correlations of VHL syndrome in Korean families and concluded that missense mutations in the Hypoxia-inducible factor-alpha (HIF-alpha) binding site elevate the age-specific risk for CHB. ('missense mutations in', 'Var', (99, 120)) ('elevate', 'PosReg', (181, 188)) ('VHL syndrome', 'Disease', 'MESH:D006623', (48, 60)) ('Hypoxia', 'Disease', 'MESH:D000860', (125, 132)) ('CHB', 'Disease', (215, 218)) ('Hypoxia', 'Disease', (125, 132)) ('VHL syndrome', 'Disease', (48, 60)) ('CHB', 'Phenotype', 'HP:0006880', (215, 218)) 581 31620170 Von Hippel-Lindau disease is rare, the size of this cohort is relatively small, and the follow-up durations are not sufficiently long, which may influence the correlation analysis between the frequent mutations in the VHL gene and the clinical phenotypes. ('mutations', 'Var', (201, 210)) ('Von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (0, 25)) ('VHL', 'Gene', (218, 221)) ('Von Hippel-Lindau disease', 'Disease', (0, 25)) ('influence', 'Reg', (145, 154)) 588 31312622 These alterations stem from single mutations that lead to maladaptive overabsorption of electrolytes with fluid shift into the vasculature, and consequent hypertension. ('lead to', 'Reg', (50, 57)) ('hypertension', 'Disease', 'MESH:D006973', (155, 167)) ('fluid shift into the vasculature', 'MPA', (106, 138)) ('hypertension', 'Phenotype', 'HP:0000822', (155, 167)) ('overabsorption of electrolytes', 'MPA', (70, 100)) ('hypertension', 'Disease', (155, 167)) ('overabsorption of electrolytes', 'Phenotype', 'HP:0005579', (70, 100)) ('mutations', 'Var', (35, 44)) 595 31312622 These genetic forms of hypertension stem from gain- or loss-of-function mutations within the mineralocorticoid, glucocorticoid, or sympathetic pathways. ('mutations', 'Var', (72, 81)) ('glucocorticoid', 'Pathway', (112, 126)) ('hypertension', 'Disease', (23, 35)) ('hypertension', 'Phenotype', 'HP:0000822', (23, 35)) ('gain-', 'PosReg', (46, 51)) ('loss-of-function', 'NegReg', (55, 71)) ('hypertension', 'Disease', 'MESH:D006973', (23, 35)) ('sympathetic pathways', 'Pathway', (131, 151)) ('mineralocorticoid', 'Pathway', (93, 110)) 620 31312622 Genetics and pathogenesis: Liddle Syndrome is caused by an autosomal dominant (AD), gain-of-function mutation of the epithelial sodium channel (ENaC) present in the collecting duct. ('Liddle Syndrome', 'Disease', (27, 42)) ('gain-of-function', 'PosReg', (84, 100)) ('ENaC', 'Gene', (144, 148)) ('sodium', 'Chemical', 'MESH:D012964', (128, 134)) ('mutation', 'Var', (101, 109)) ('AD', 'Disease', 'MESH:D000544', (79, 81)) ('AD', 'Disease', (79, 81)) 622 31312622 Mutation of these subunits disrupts expression of proline-rich regions of the cytoplasmic carboxyl terminus and results in loss of regulatory binding sites for Nedd4-2, a ubiquitin ligase necessary for the breakdown of ENaC. ('regulatory', 'MPA', (131, 141)) ('proline', 'Chemical', 'MESH:D011392', (50, 57)) ('Nedd4-2', 'Gene', (160, 167)) ('Mutation', 'Var', (0, 8)) ('disrupts', 'NegReg', (27, 35)) ('proline-rich regions of the cytoplasmic', 'MPA', (50, 89)) ('loss', 'NegReg', (123, 127)) ('expression', 'MPA', (36, 46)) ('Nedd4-2', 'Gene', '23327', (160, 167)) 628 31312622 Liddle's has an estimated prevalence of 1.5% with genetic testing in a Chinese population and was found to have a 6% prevalence in hypertensive patients among a study of US veterans in Louisiana. ('hypertensive', 'Disease', 'MESH:D006973', (131, 143)) ('genetic', 'Var', (50, 57)) ('patients', 'Species', '9606', (144, 152)) ('hypertensive', 'Disease', (131, 143)) 632 31312622 Random aldosterone/renin ratio can be used as a screening test, and a ratio >30 excludes the diagnosis (when expressed in ng/dL for aldosterone and ng/dL/h for renin). ('renin', 'Gene', '5972', (19, 24)) ('excludes', 'NegReg', (80, 88)) ('renin', 'Gene', '5972', (160, 165)) ('aldosterone', 'Chemical', 'MESH:D000450', (7, 18)) ('ratio >30', 'Var', (70, 79)) ('renin', 'Gene', (19, 24)) ('aldosterone', 'Chemical', 'MESH:D000450', (132, 143)) ('renin', 'Gene', (160, 165)) 636 31312622 Spironolactone is not useful as the genetically altered ENaC is independent of mineralocorticoid regulation. ('Spironolactone', 'Chemical', 'MESH:D013148', (0, 14)) ('ENaC', 'Gene', (56, 60)) ('genetically altered', 'Var', (36, 55)) 645 31312622 The respective enzymes regulate different steps in steroid synthesis, but 11OHD and 17OHD deficiency both cause elevated deoxycortisol and deoxycorticosterone levels. ('11OHD', 'Var', (74, 79)) ('17OHD deficiency', 'Disease', 'MESH:D007153', (84, 100)) ('17OHD deficiency', 'Disease', (84, 100)) ('elevated', 'PosReg', (112, 120)) ('deoxycorticosterone levels', 'MPA', (139, 165)) ('deoxycortisol', 'MPA', (121, 134)) ('deoxycorticosterone', 'Chemical', 'MESH:D003900', (139, 158)) ('steroid', 'Chemical', 'MESH:D013256', (51, 58)) ('deoxycortisol', 'Chemical', 'MESH:D003350', (121, 134)) ('elevated deoxycortisol and deoxycorticosterone', 'Phenotype', 'HP:0025436', (112, 158)) 648 31312622 Genetics and Pathophysiology: CAH type IV, or loss of 11beta-hydroxylase, prevents conversion of deoxycortisone and deoxycortisol into corticosterone and cortisol, respectively. ('deoxycortisol', 'Chemical', 'MESH:D003350', (116, 129)) ('conversion', 'MPA', (83, 93)) ('corticosterone', 'Chemical', 'MESH:D003345', (135, 149)) ('deoxycortisone', 'Chemical', 'MESH:D003350', (97, 111)) ('deoxycortisol', 'MPA', (116, 129)) ('prevents', 'NegReg', (74, 82)) ('loss', 'Var', (46, 50)) ('cortisol', 'Chemical', 'MESH:D006854', (154, 162)) ('cortisol', 'Chemical', 'MESH:D006854', (121, 129)) ('11beta-hydroxylase', 'Protein', (54, 72)) 661 31312622 CAH type V, also known as P450C17alpha deficiency, manifests clinically as hypogonadism, hypokalemia, and hypertension. ('hypertension', 'Disease', 'MESH:D006973', (106, 118)) ('hypogonadism', 'Phenotype', 'HP:0000135', (75, 87)) ('hypokalemia', 'Disease', (89, 100)) ('hypertension', 'Disease', (106, 118)) ('hypogonadism', 'Disease', (75, 87)) ('hypokalemia', 'Disease', 'MESH:D007008', (89, 100)) ('hypogonadism', 'Disease', 'MESH:D007006', (75, 87)) ('hypertension', 'Phenotype', 'HP:0000822', (106, 118)) ('hypokalemia', 'Phenotype', 'HP:0002900', (89, 100)) ('CAH', 'Var', (0, 3)) 677 31312622 Genetics and pathophysiology: The syndrome of apparent mineralocorticoid excess (AME) is an autosomal recessive disease caused by an inactivating mutation of 11beta-hydroxysteroid dehydrogenase type 2 (HSD11B2). ('inactivating mutation', 'Var', (133, 154)) ('autosomal recessive disease', 'Disease', (92, 119)) ('autosomal recessive disease', 'Disease', 'MESH:D030342', (92, 119)) ('mineralocorticoid excess', 'Phenotype', 'HP:0000859', (55, 79)) ('HSD11B2', 'Gene', (202, 209)) ('caused by', 'Reg', (120, 129)) ('11beta-hydroxysteroid dehydrogenase type 2', 'Gene', '3291', (158, 200)) ('HSD11B2', 'Gene', '3291', (202, 209)) ('11beta-hydroxysteroid dehydrogenase type 2', 'Gene', (158, 200)) 681 31312622 With this mutation, cortisol is not metabolized and is able to bind to the mineralocorticoid receptor, causing clinical features similar to pseudohyperaldosteronism (Figure 4). ('bind', 'Interaction', (63, 67)) ('pseudohyperaldosteronism', 'Disease', (140, 164)) ('mineralocorticoid receptor', 'Gene', (75, 101)) ('causing', 'Reg', (103, 110)) ('cortisol', 'Chemical', 'MESH:D006854', (20, 28)) ('mutation', 'Var', (10, 18)) ('mineralocorticoid receptor', 'Gene', '4306', (75, 101)) ('hyperaldosteronism', 'Phenotype', 'HP:0000859', (146, 164)) ('pseudohyperaldosteronism', 'Disease', 'MESH:D056929', (140, 164)) 695 31312622 Genetic testing revealed a mutation of the mineralocorticoid receptor gene to confirm the diagnosis of Geller Syndrome. ('revealed', 'Reg', (16, 24)) ('mineralocorticoid receptor', 'Gene', (43, 69)) ('Geller Syndrome', 'Disease', 'MESH:D013577', (103, 118)) ('Geller Syndrome', 'Disease', (103, 118)) ('mutation', 'Var', (27, 35)) ('mineralocorticoid receptor', 'Gene', '4306', (43, 69)) 696 31312622 Geller syndrome, also referred to as constitutive activation of the mineralocorticoid receptor, results from a gain-of-function mutation on chromosome 4q31. ('Geller syndrome', 'Disease', (0, 15)) ('mineralocorticoid receptor', 'Gene', (68, 94)) ('Geller syndrome', 'Disease', 'MESH:D013577', (0, 15)) ('mutation', 'Var', (128, 136)) ('gain-of-function', 'PosReg', (111, 127)) ('mineralocorticoid receptor', 'Gene', '4306', (68, 94)) 698 31312622 This mutation within the mineralocorticoid receptor causes it to remain constitutively active due to changes to receptor sites that result in altered specificities to the steroid hormones. ('mineralocorticoid receptor', 'Gene', '4306', (25, 51)) ('altered', 'Reg', (142, 149)) ('steroid hormones', 'Chemical', 'MESH:D013256', (171, 187)) ('mineralocorticoid receptor', 'Gene', (25, 51)) ('specificities to the steroid hormones', 'MPA', (150, 187)) ('mutation', 'Var', (5, 13)) ('changes', 'Reg', (101, 108)) 704 31312622 A clear diagnosis can be done by genetic testing for gene mutations in the mineralocorticoid receptor. ('mineralocorticoid receptor', 'Gene', (75, 101)) ('mineralocorticoid receptor', 'Gene', '4306', (75, 101)) ('gene mutations', 'Var', (53, 67)) 714 31312622 PHAII type B is due to a loss-of-function mutation of the WNK4 gene on chromosome 17q21.2, while PHAII type C results from gain-of-function mutation of the WNK1 gene on chromosome 12p12.3. ('WNK1', 'Gene', '65125', (156, 160)) ('WNK1', 'Gene', (156, 160)) ('gain-of-function', 'PosReg', (123, 139)) ('loss-of-function', 'NegReg', (25, 41)) ('mutation', 'Var', (140, 148)) ('WNK4', 'Gene', (58, 62)) ('WNK4', 'Gene', '65266', (58, 62)) ('PHAII type B', 'Disease', (0, 12)) ('mutation', 'Var', (42, 50)) 716 31312622 Mutation of the WNK genes leads to failure of endocytosis of the Na+-Cl- co-transporter (NCC). ('Mutation', 'Var', (0, 8)) ('Na+-Cl- co-transporter', 'Gene', '6559', (65, 87)) ('WNK', 'Gene', (16, 19)) ('NCC', 'Gene', '6559', (89, 92)) ('Na+-Cl- co-transporter', 'Gene', (65, 87)) ('failure', 'NegReg', (35, 42)) ('NCC', 'Gene', (89, 92)) 729 31312622 Two additional genes, KLHL3 and CUL3, located at chromosome 5q31.2 and 2q36.2, respectively, have been identified as aiding WNK4 function; KLHL 3 mutations are implicated in PHAII type D, while CUL3 is implicated in PHAII type E. Activation of WNK1 stimulates SGK1 (serum- and glucocorticoid-inducible protein kinase 1), which activates the NCC, increasing sodium reabsorption, and leading to hypertension. ('SGK1', 'Gene', '6446', (260, 264)) ('WNK1', 'Gene', (244, 248)) ('hypertension', 'Disease', (393, 405)) ('hypertension', 'Phenotype', 'HP:0000822', (393, 405)) ('sodium reabsorption', 'MPA', (357, 376)) ('CUL3', 'Gene', (194, 198)) ('increasing', 'PosReg', (346, 356)) ('leading to', 'Reg', (382, 392)) ('SGK1', 'Gene', (260, 264)) ('Activation', 'Var', (230, 240)) ('aid', 'Gene', (117, 120)) ('WNK1', 'Gene', '65125', (244, 248)) ('KLHL 3', 'Gene', '26249', (139, 145)) ('serum- and glucocorticoid-inducible protein kinase 1', 'Gene', '6446', (266, 318)) ('CUL3', 'Gene', (32, 36)) ('KLHL3', 'Gene', (22, 27)) ('aid', 'Gene', '57379', (117, 120)) ('NCC', 'Gene', (341, 344)) ('KLHL 3', 'Gene', (139, 145)) ('KLHL3', 'Gene', '26249', (22, 27)) ('CUL3', 'Gene', '8452', (194, 198)) ('activates', 'PosReg', (327, 336)) ('WNK4', 'Gene', '65266', (124, 128)) ('WNK4', 'Gene', (124, 128)) ('NCC', 'Gene', '6559', (341, 344)) ('hypertension', 'Disease', 'MESH:D006973', (393, 405)) ('sodium', 'Chemical', 'MESH:D012964', (357, 363)) ('CUL3', 'Gene', '8452', (32, 36)) 750 31312622 Normally, aldosterone is secreted by the zona glomerulosa of the adrenal gland, but due to this chimeric gene, aldosterone is ectopically secreted from the adrenal zona fasciculata instead. ('adrenal zona fasciculata', 'Disease', (156, 180)) ('chimeric gene', 'Var', (96, 109)) ('adrenal zona fasciculata', 'Disease', 'MESH:D006562', (156, 180)) ('aldosterone', 'Chemical', 'MESH:D000450', (10, 21)) ('aldosterone', 'Chemical', 'MESH:D000450', (111, 122)) 776 31312622 A recent study of patients diagnosed with FHT-II implicates gain-of-function mutations in the CLCN2 gene, encoding a chloride channel, ClC-2, located at chromosome 3q27.1. ('gain-of-function', 'PosReg', (60, 76)) ('FHT-I', 'Phenotype', 'HP:0011739', (42, 47)) ('ClC-2', 'Gene', (135, 140)) ('CLCN2', 'Gene', '1181', (94, 99)) ('ClC-2', 'Gene', '1181', (135, 140)) ('mutations', 'Var', (77, 86)) ('patients', 'Species', '9606', (18, 26)) ('CLCN2', 'Gene', (94, 99)) 777 31312622 The variant channels were shown in vitro to cause depolarization of adrenocortical cancer cell lines, leading to increased expression of aldosterone synthase and aldosterone production. ('aldosterone production', 'MPA', (162, 184)) ('expression', 'MPA', (123, 133)) ('aldosterone', 'Chemical', 'MESH:D000450', (162, 173)) ('adrenocortical cancer', 'Disease', (68, 89)) ('aldosterone production', 'Phenotype', 'HP:0000859', (162, 184)) ('cancer', 'Phenotype', 'HP:0002664', (83, 89)) ('aldosterone', 'Chemical', 'MESH:D000450', (137, 148)) ('aldosterone synthase', 'Gene', (137, 157)) ('aldosterone synthase', 'Gene', '1585', (137, 157)) ('increased expression of aldosterone', 'Phenotype', 'HP:0000859', (113, 148)) ('increased', 'PosReg', (113, 122)) ('adrenocortical cancer', 'Disease', 'MESH:D000306', (68, 89)) ('variant', 'Var', (4, 11)) ('depolarization', 'MPA', (50, 64)) 779 31312622 Genetic testing for CLCN2 mutations may prove helpful, though further work is needed to identify other possible causative genes. ('mutations', 'Var', (26, 35)) ('CLCN2', 'Gene', '1181', (20, 25)) ('CLCN2', 'Gene', (20, 25)) 781 31312622 Familial hyperaldosteronism type 3 (FHT-III) is an autosomal dominant condition caused by gain-of-function mutations in the KCNJ5 gene located at locus 11q24.3. ('mutations', 'Var', (107, 116)) ('KCNJ5', 'Gene', (124, 129)) ('Familial hyperaldosteronism', 'Disease', 'MESH:C580087', (0, 27)) ('Familial hyperaldosteronism type', 'Phenotype', 'HP:0011739', (0, 32)) ('hyperaldosteronism', 'Phenotype', 'HP:0000859', (9, 27)) ('KCNJ5', 'Gene', '3762', (124, 129)) ('gain-of-function', 'PosReg', (90, 106)) ('FHT-I', 'Phenotype', 'HP:0011739', (36, 41)) ('Familial hyperaldosteronism', 'Disease', (0, 27)) 782 31312622 KCNJ5 encodes a potassium channel, which loses its ionic selectivity in disease-causing variants to allow other cations, particularly sodium, to pass through. ('pass through', 'MPA', (145, 157)) ('KCNJ5', 'Gene', '3762', (0, 5)) ('loses', 'NegReg', (41, 46)) ('potassium', 'Chemical', 'MESH:D011188', (16, 25)) ('sodium', 'Chemical', 'MESH:D012964', (134, 140)) ('ionic selectivity', 'MPA', (51, 68)) ('variants', 'Var', (88, 96)) ('KCNJ5', 'Gene', (0, 5)) 785 31312622 Familial hyperaldosteronism type 4 (FHT-IV) is an autosomal dominant condition caused by gain-of-function mutations in the CACNA1H gene located at chromosome 16p13.3. ('hyperaldosteronism type 4', 'Phenotype', 'HP:0011741', (9, 34)) ('CACNA1H', 'Gene', '8912', (123, 130)) ('gain-of-function', 'PosReg', (89, 105)) ('Familial hyperaldosteronism', 'Disease', 'MESH:C580087', (0, 27)) ('Familial hyperaldosteronism type', 'Phenotype', 'HP:0011739', (0, 32)) ('hyperaldosteronism', 'Phenotype', 'HP:0000859', (9, 27)) ('mutations', 'Var', (106, 115)) ('FHT-I', 'Phenotype', 'HP:0011739', (36, 41)) ('Familial hyperaldosteronism', 'Disease', (0, 27)) ('CACNA1H', 'Gene', (123, 130)) 787 31312622 These changes allow for greater influx of calcium ions, stimulating adrenal cortical cells and subsequently activating aldosterone synthase. ('calcium', 'Chemical', 'MESH:D002118', (42, 49)) ('greater', 'PosReg', (24, 31)) ('adrenal cortical cells', 'CPA', (68, 90)) ('aldosterone synthase', 'Gene', (119, 139)) ('aldosterone synthase', 'Gene', '1585', (119, 139)) ('changes', 'Var', (6, 13)) ('activating', 'PosReg', (108, 118)) ('stimulating', 'PosReg', (56, 67)) ('influx of calcium ions', 'MPA', (32, 54)) 799 31312622 The mutation is on chromosome 3p25.3 and is a tumor-suppressor gene defect that leads to disease. ('tumor', 'Phenotype', 'HP:0002664', (46, 51)) ('tumor', 'Disease', (46, 51)) ('mutation', 'Var', (4, 12)) ('leads to', 'Reg', (80, 88)) ('disease', 'Disease', (89, 96)) ('tumor', 'Disease', 'MESH:D009369', (46, 51)) 804 31312622 Pheochromocytoma has also been associated with neurofibromatosis type I, caused by mutations in the NF1 gene, located at chromosome 17q11.2. ('Pheochromocytoma', 'Disease', (0, 16)) ('mutations', 'Var', (83, 92)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('NF1', 'Gene', '4763', (100, 103)) ('associated', 'Reg', (31, 41)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (47, 64)) ('NF1', 'Gene', (100, 103)) ('caused by', 'Reg', (73, 82)) ('neurofibromatosis type I', 'Disease', (47, 71)) ('neurofibromatosis type I', 'Disease', 'MESH:C537392', (47, 71)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) 805 31312622 Solitary pheochromocytomas have also been shown to contain mutations in the aforementioned genes. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (9, 26)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (9, 25)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (9, 26)) ('pheochromocytomas', 'Disease', (9, 26)) ('mutations', 'Var', (59, 68)) 806 31312622 One study of solitary tumors reported that 86% contained copy number alterations in genes associated with familial pheochromocytoma; changes in NF1 were found to be the most frequent at 26% of the tumors studied. ('tumors', 'Phenotype', 'HP:0002664', (22, 28)) ('tumors', 'Disease', 'MESH:D009369', (197, 203)) ('NF1', 'Gene', (144, 147)) ('solitary tumors', 'Disease', (13, 28)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (106, 131)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (115, 131)) ('tumors', 'Disease', 'MESH:D009369', (22, 28)) ('changes', 'Var', (133, 140)) ('solitary tumors', 'Disease', 'MESH:D054364', (13, 28)) ('tumors', 'Phenotype', 'HP:0002664', (197, 203)) ('tumor', 'Phenotype', 'HP:0002664', (22, 27)) ('tumor', 'Phenotype', 'HP:0002664', (197, 202)) ('familial pheochromocytoma', 'Disease', (106, 131)) ('NF1', 'Gene', '4763', (144, 147)) ('tumors', 'Disease', (197, 203)) ('copy number alterations', 'Var', (57, 80)) ('tumors', 'Disease', (22, 28)) 815 31312622 Hypertension and brachydactyly (HTNB) describes an autosomal dominant syndrome caused by a mutation in the PDE3A gene located at chromosome 12p12.2; this gene encodes a phosphodiesterase that hydrolyzes cAMP. ('HTNB', 'Disease', (32, 36)) ('PDE3A', 'Gene', '5139', (107, 112)) ('mutation', 'Var', (91, 99)) ('autosomal dominant syndrome', 'Disease', 'MESH:D030342', (51, 78)) ('autosomal dominant syndrome', 'Disease', (51, 78)) ('brachydactyly', 'Phenotype', 'HP:0001156', (17, 30)) ('brachydactyly', 'Disease', (17, 30)) ('PDE3A', 'Gene', (107, 112)) ('Hypertension', 'Phenotype', 'HP:0000822', (0, 12)) ('and', 'Disease', (13, 16)) ('Hypertension', 'Disease', 'MESH:D006973', (0, 12)) ('cAMP', 'Chemical', '-', (203, 207)) ('brachydactyly', 'Disease', 'MESH:D059327', (17, 30)) ('HTNB', 'Disease', 'MESH:C537095', (32, 36)) ('caused by', 'Reg', (79, 88)) ('Hypertension', 'Disease', (0, 12)) 816 31312622 Variants of PDE3A that cause HTNB exhibit a gain-of-function due to altered enzyme phosphorylation. ('HTNB', 'Disease', (29, 33)) ('HTNB', 'Disease', 'MESH:C537095', (29, 33)) ('Variants', 'Var', (0, 8)) ('gain-of-function', 'PosReg', (44, 60)) ('enzyme phosphorylation', 'MPA', (76, 98)) ('PDE3A', 'Gene', '5139', (12, 17)) ('PDE3A', 'Gene', (12, 17)) ('altered', 'Reg', (68, 75)) 817 31312622 The mutant PDE3A enzymes consequently decrease cellular cAMP levels in vascular smooth muscle cells, allowing for proliferation. ('PDE3A', 'Gene', '5139', (11, 16)) ('mutant', 'Var', (4, 10)) ('allowing', 'Reg', (101, 109)) ('PDE3A', 'Gene', (11, 16)) ('enzymes', 'Protein', (17, 24)) ('decrease', 'NegReg', (38, 46)) ('proliferation', 'CPA', (114, 127)) ('cAMP', 'Chemical', '-', (56, 60)) 822 31312622 Monogenic hypertension refers to specific genetic mutations that interfere with normal renal and adrenal regulation of blood pressure. ('hypertension', 'Disease', 'MESH:D006973', (10, 22)) ('mutations', 'Var', (50, 59)) ('interfere', 'NegReg', (65, 74)) ('hypertension', 'Disease', (10, 22)) ('hypertension', 'Phenotype', 'HP:0000822', (10, 22)) 873 31034483 One start codon variant of unknown clinical significance (VUS) (c.3G>A, p.Met1Ile) and one missense VUS (c.631A>C, p.Met211Leu) was found in VHL in a patient with RCC-onset at twenty-eight years of age but without other manifestations or family history of von Hippel-Lindau (VHL). ('c.3G>A', 'Mutation', 'rs578091032', (64, 70)) ('RCC', 'Phenotype', 'HP:0005584', (163, 166)) ('patient', 'Species', '9606', (150, 157)) ('VHL', 'Gene', '7428', (141, 144)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (256, 273)) ('VUS', 'Chemical', '-', (58, 61)) ('VUS', 'Chemical', '-', (100, 103)) ('RCC-onset', 'Disease', 'MESH:C538614', (163, 172)) ('p.Met211Leu', 'Mutation', 'rs200019083', (115, 126)) ('von Hippel-Lindau', 'Disease', (256, 273)) ('c.631A>C', 'Var', (105, 113)) ('c.3G>A', 'Var', (64, 70)) ('VHL', 'Gene', (275, 278)) ('RCC-onset', 'Disease', (163, 172)) ('c.631A>C', 'Mutation', 'rs200019083', (105, 113)) ('VHL', 'Gene', (141, 144)) ('p.Met1Ile', 'Mutation', 'rs578091032', (72, 81)) ('VHL', 'Gene', '7428', (275, 278)) 874 31034483 Furthermore, in three families we found three different variants in BAP1, one of which was a novel non-segregating missense variant (c.1502G>A, p.Ser501Asn) in a family with two brothers affected with RCC. ('RCC', 'Disease', 'MESH:C538614', (201, 204)) ('RCC', 'Disease', (201, 204)) ('p.Ser501Asn', 'Mutation', 'rs587777964', (144, 155)) ('RCC', 'Phenotype', 'HP:0005584', (201, 204)) ('BAP1', 'Gene', '8314', (68, 72)) ('BAP1', 'Gene', (68, 72)) ('c.1502G>A', 'Var', (133, 142)) ('c.1502G>A', 'Mutation', 'rs587777964', (133, 142)) 875 31034483 Finally, we found the known E318K-substitution in MITF in a RCC-affected member of a family with multiple melanomas. ('MITF', 'Gene', '4286', (50, 54)) ('MITF', 'Gene', (50, 54)) ('E318K-substitution', 'Var', (28, 46)) ('E318K', 'Mutation', 'rs149617956', (28, 33)) ('RCC', 'Disease', (60, 63)) ('RCC', 'Phenotype', 'HP:0005584', (60, 63)) ('multiple melanomas', 'Disease', (97, 115)) ('RCC', 'Disease', 'MESH:C538614', (60, 63)) ('melanomas', 'Phenotype', 'HP:0002861', (106, 115)) ('multiple melanomas', 'Disease', 'MESH:D008545', (97, 115)) ('melanoma', 'Phenotype', 'HP:0002861', (106, 114)) 877 31034483 Although we did find three VUS's in BAP1 in three families and a pathogenic variant in MITF in one family, pathogenic germline variants in BAP1, MITF or CDKN2B are not frequent causes of hereditary renal cancer in Denmark. ('MITF', 'Gene', '4286', (145, 149)) ('variant', 'Var', (76, 83)) ('CDKN2B', 'Gene', '1030', (153, 159)) ('MITF', 'Gene', '4286', (87, 91)) ('MITF', 'Gene', (145, 149)) ('BAP1', 'Gene', '8314', (36, 40)) ('MITF', 'Gene', (87, 91)) ('variants', 'Var', (127, 135)) ('hereditary renal cancer', 'Disease', 'MESH:D007680', (187, 210)) ('hereditary renal cancer', 'Disease', (187, 210)) ('BAP1', 'Gene', '8314', (139, 143)) ('cancer', 'Phenotype', 'HP:0002664', (204, 210)) ("VUS's", 'Disease', 'MESH:D010300', (27, 32)) ('VUS', 'Disease', (27, 30)) ('BAP1', 'Gene', (36, 40)) ('CDKN2B', 'Gene', (153, 159)) ('BAP1', 'Gene', (139, 143)) ('renal cancer', 'Phenotype', 'HP:0009726', (198, 210)) ('causes', 'Reg', (177, 183)) 889 31034483 The majority of hereditary RCCs are caused by pathogenic germline variants in the VHL gene (OMIM #608537) that causes von Hippel-Lindau syndrome (VHL), while other predisposing syndromes include hereditary leiomyomatosis and RCC (FH, OMIM#136850), Birt-Hogg-Dube (FLCN, OMIM #607273), hereditary papillary RCC (MET, OMIM#164860), hereditary paraganglioma and RCC (SDHB, OMIM#185470) and constitutional chromosome 3 translocations of t(3;8)(p14.2;q24.1) (reviewed in, OMIM#14470). ('hereditary leiomyomatosis', 'Disease', 'MESH:D018231', (195, 220)) ('hereditary paraganglioma', 'Disease', 'MESH:D010235', (330, 354)) ('SDHB', 'Gene', '6390', (364, 368)) ('causes', 'Reg', (111, 117)) ('paraganglioma', 'Phenotype', 'HP:0002668', (341, 354)) ('t(3;8)(p14.2;q24.1)', 'STRUCTURAL_ABNORMALITY', 'None', (433, 452)) ('RCC', 'Disease', (27, 30)) ('RCC', 'Phenotype', 'HP:0005584', (27, 30)) ('RCC', 'Phenotype', 'HP:0005584', (306, 309)) ('RCC', 'Disease', (225, 228)) ('RCC', 'Disease', (306, 309)) ('von Hippel-Lindau syndrome', 'Disease', (118, 144)) ('RCC', 'Phenotype', 'HP:0005584', (225, 228)) ('variants', 'Var', (66, 74)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (118, 144)) ('hereditary paraganglioma', 'Disease', (330, 354)) ('RCC', 'Disease', 'MESH:C538614', (27, 30)) ('SDHB', 'Gene', (364, 368)) ('VHL', 'Gene', (146, 149)) ('hereditary papillary RCC', 'Disease', 'MESH:C538614', (285, 309)) ('RCC', 'Disease', 'MESH:C538614', (306, 309)) ('RCC', 'Disease', (359, 362)) ('RCC', 'Phenotype', 'HP:0005584', (359, 362)) ('RCC', 'Disease', 'MESH:C538614', (225, 228)) ('VHL', 'Gene', (82, 85)) ('FLCN', 'Gene', '201163', (264, 268)) ('hereditary leiomyomatosis', 'Disease', (195, 220)) ('RCCs', 'Phenotype', 'HP:0005584', (27, 31)) ('hereditary papillary RCC', 'Disease', (285, 309)) ('RCC', 'Disease', 'MESH:C538614', (359, 362)) ('FLCN', 'Gene', (264, 268)) ('VHL', 'Gene', '7428', (146, 149)) ('caused', 'Reg', (36, 42)) ('VHL', 'Gene', '7428', (82, 85)) 890 31034483 However, for several multi-case or early onset RCC families, screening for known pathogenic variants in the most frequent causative genes VHL, FH, FLCN, and MET yields no eligible explanation for the accumulation of RCC in the family, suggesting that unknown genes predisposing for RCC most likely exist. ('FLCN', 'Gene', (147, 151)) ('RCC', 'Disease', 'MESH:C538614', (282, 285)) ('VHL', 'Gene', '7428', (138, 141)) ('RCC', 'Disease', (282, 285)) ('RCC', 'Phenotype', 'HP:0005584', (282, 285)) ('FLCN', 'Gene', '201163', (147, 151)) ('RCC', 'Disease', 'MESH:C538614', (47, 50)) ('RCC', 'Disease', (47, 50)) ('RCC', 'Phenotype', 'HP:0005584', (47, 50)) ('RCC', 'Disease', 'MESH:C538614', (216, 219)) ('RCC', 'Disease', (216, 219)) ('RCC', 'Phenotype', 'HP:0005584', (216, 219)) ('VHL', 'Gene', (138, 141)) ('variants', 'Var', (92, 100)) 893 31034483 A broad tumor spectrum accompanies BAP1 pathogenic germline variants and although this spectrum has not yet been fully elucidated, pathogenic variants in BAP1 is known to predispose to cutaneous and uveal melanoma and mesothelioma and is suspected of playing a role in the development of other cancers such as breast cancer, cholangiocarcinoma, cancer of the pancreas and basal cell carcinoma. ('basal cell carcinoma', 'Phenotype', 'HP:0002671', (372, 392)) ('BAP1', 'Gene', (154, 158)) ('carcinoma', 'Phenotype', 'HP:0030731', (383, 392)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('breast cancer', 'Disease', 'MESH:D001943', (310, 323)) ('men', 'Species', '9606', (280, 283)) ('BAP1', 'Gene', (35, 39)) ('breast cancer', 'Disease', (310, 323)) ('role', 'Reg', (261, 265)) ('carcinoma', 'Phenotype', 'HP:0030731', (334, 343)) ('basal cell carcinoma', 'Disease', (372, 392)) ('uveal melanoma and mesothelioma', 'Disease', 'MESH:C536494', (199, 230)) ('melanoma', 'Phenotype', 'HP:0002861', (205, 213)) ('cancers', 'Phenotype', 'HP:0002664', (294, 301)) ('cancers', 'Disease', (294, 301)) ('cancer of the pancreas', 'Disease', (345, 367)) ('cancer', 'Phenotype', 'HP:0002664', (294, 300)) ('cancer of the pancreas', 'Phenotype', 'HP:0002894', (345, 367)) ('variants', 'Var', (142, 150)) ('cholangiocarcinoma', 'Phenotype', 'HP:0030153', (325, 343)) ('playing', 'Reg', (251, 258)) ('cancer', 'Phenotype', 'HP:0002664', (317, 323)) ('tumor', 'Disease', (8, 13)) ('uveal melanoma', 'Phenotype', 'HP:0007716', (199, 213)) ('cholangiocarcinoma', 'Disease', (325, 343)) ('BAP1', 'Gene', '8314', (154, 158)) ('cholangiocarcinoma', 'Disease', 'MESH:D018281', (325, 343)) ('basal cell carcinoma', 'Disease', 'MESH:D002280', (372, 392)) ('tumor', 'Disease', 'MESH:D009369', (8, 13)) ('cancers', 'Disease', 'MESH:D009369', (294, 301)) ('BAP1', 'Gene', '8314', (35, 39)) ('cancer', 'Phenotype', 'HP:0002664', (345, 351)) ('predispose', 'Reg', (171, 181)) ('variants', 'Var', (60, 68)) ('breast cancer', 'Phenotype', 'HP:0003002', (310, 323)) ('cancer of the pancreas', 'Disease', 'MESH:D010190', (345, 367)) 894 31034483 Furthermore BAP1 has been found to be mutated in tissue from sporadic malignant renal tumors, which are associated with a high tumor grade and bad prognosis. ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('mutated', 'Var', (38, 45)) ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('malignant renal tumors', 'Disease', 'MESH:D007674', (70, 92)) ('tumor', 'Disease', (127, 132)) ('tumor', 'Disease', (86, 91)) ('renal tumor', 'Phenotype', 'HP:0009726', (80, 91)) ('tumors', 'Phenotype', 'HP:0002664', (86, 92)) ('BAP1', 'Gene', '8314', (12, 16)) ('renal tumors', 'Phenotype', 'HP:0009726', (80, 92)) ('tumor', 'Disease', 'MESH:D009369', (127, 132)) ('BAP1', 'Gene', (12, 16)) ('tumor', 'Disease', 'MESH:D009369', (86, 91)) ('malignant renal tumors', 'Disease', (70, 92)) 895 31034483 Pathogenic germline variants have been found to segregate with the disease in high risk RCC families in France and the US, indicating that RCC might be an integral part of the BAP1 tumor spectrum. ('variants', 'Var', (20, 28)) ('tumor', 'Disease', (181, 186)) ('BAP1', 'Gene', '8314', (176, 180)) ('RCC', 'Phenotype', 'HP:0005584', (139, 142)) ('RCC', 'Disease', 'MESH:C538614', (88, 91)) ('RCC', 'Disease', (88, 91)) ('RCC', 'Disease', 'MESH:C538614', (139, 142)) ('RCC', 'Phenotype', 'HP:0005584', (88, 91)) ('RCC', 'Disease', (139, 142)) ('BAP1', 'Gene', (176, 180)) ('tumor', 'Disease', 'MESH:D009369', (181, 186)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) 897 31034483 In 2011 Bertolotto et al discovered a germline amino acid substitution (E318K) in MITF (OMIM#156845) that occurred with a significantly higher frequency in patients with melanoma, RCC or both cancers when compared to controls. ('patients', 'Species', '9606', (156, 164)) ('melanoma', 'Phenotype', 'HP:0002861', (170, 178)) ('RCC', 'Disease', 'MESH:C538614', (180, 183)) ('melanoma', 'Disease', (170, 178)) ('RCC', 'Disease', (180, 183)) ('RCC', 'Phenotype', 'HP:0005584', (180, 183)) ('melanoma', 'Disease', 'MESH:D008545', (170, 178)) ('MITF', 'Gene', (82, 86)) ('MITF', 'Gene', '4286', (82, 86)) ('cancers', 'Disease', 'MESH:D009369', (192, 199)) ('cancers', 'Phenotype', 'HP:0002664', (192, 199)) ('cancers', 'Disease', (192, 199)) ('E318K', 'Mutation', 'rs149617956', (72, 77)) ('E318K', 'Var', (72, 77)) ('cancer', 'Phenotype', 'HP:0002664', (192, 198)) 898 31034483 The E318K variant has been found to increase growth, proliferation and migration of melanocytes and renal cells, and although the full picture of MITFs contribution to oncogenesis is yet unknown, the variant is thought to enable MITF to act as an oncogene and thereby predispose to melanoma and RCC. ('melanoma', 'Disease', (282, 290)) ('MITF', 'Gene', '4286', (229, 233)) ('MITF', 'Gene', (229, 233)) ('E318K', 'Mutation', 'rs149617956', (4, 9)) ('melanoma', 'Disease', 'MESH:D008545', (282, 290)) ('growth', 'CPA', (45, 51)) ('increase', 'PosReg', (36, 44)) ('E318K', 'Var', (4, 9)) ('RCC', 'Phenotype', 'HP:0005584', (295, 298)) ('enable', 'PosReg', (222, 228)) ('RCC', 'Disease', 'MESH:C538614', (295, 298)) ('predispose to', 'Reg', (268, 281)) ('MITF', 'Gene', (146, 150)) ('RCC', 'Disease', (295, 298)) ('MITF', 'Gene', '4286', (146, 150)) ('melanoma', 'Phenotype', 'HP:0002861', (282, 290)) 899 31034483 CDKN2B (OMIM#600431) is located close to the tumor suppressor gene CDKN2A in region 9p21.3 on the short arm of chromosome 9; a region that often contains genetic alterations and is involved in the development of several types of tumors. ('tumors', 'Disease', 'MESH:D009369', (229, 235)) ('tumor', 'Disease', 'MESH:D009369', (45, 50)) ('CDKN2A', 'Gene', (67, 73)) ('tumor', 'Disease', 'MESH:D009369', (229, 234)) ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('contains', 'Reg', (145, 153)) ('tumor', 'Disease', (45, 50)) ('CDKN2A', 'Gene', '1029', (67, 73)) ('short arm', 'Phenotype', 'HP:0009824', (98, 107)) ('tumor', 'Phenotype', 'HP:0002664', (229, 234)) ('involved', 'Reg', (181, 189)) ('tumor', 'Disease', (229, 234)) ('men', 'Species', '9606', (204, 207)) ('tumors', 'Phenotype', 'HP:0002664', (229, 235)) ('genetic alterations', 'Var', (154, 173)) ('CDKN2B', 'Gene', (0, 6)) ('tumors', 'Disease', (229, 235)) ('CDKN2B', 'Gene', '1030', (0, 6)) 903 31034483 DNA was available from five family members of whom the variant was found in two affected brothers and not in three of their cancer free siblings. ('variant', 'Var', (55, 62)) ('cancer', 'Disease', (124, 130)) ('cancer', 'Disease', 'MESH:D009369', (124, 130)) ('cancer', 'Phenotype', 'HP:0002664', (124, 130)) 904 31034483 Furthermore, two novel missense variants in CDKN2B were found in a cohort of fifty individuals with features of nonsyndromic hereditary RCC. ('missense variants', 'Var', (23, 40)) ('CDKN2B', 'Gene', (44, 50)) ('nonsyndromic hereditary RCC', 'Disease', (112, 139)) ('nonsyndromic hereditary RCC', 'Disease', 'MESH:C538614', (112, 139)) ('RCC', 'Phenotype', 'HP:0005584', (136, 139)) ('CDKN2B', 'Gene', '1030', (44, 50)) ('found', 'Reg', (56, 61)) 905 31034483 In this study we have examined whether pathogenic variants in BAP1, MITF or CDKN2B play a role in the development of RCC. ('RCC', 'Disease', 'MESH:C538614', (117, 120)) ('BAP1', 'Gene', '8314', (62, 66)) ('RCC', 'Disease', (117, 120)) ('RCC', 'Phenotype', 'HP:0005584', (117, 120)) ('CDKN2B', 'Gene', '1030', (76, 82)) ('MITF', 'Gene', '4286', (68, 72)) ('MITF', 'Gene', (68, 72)) ('BAP1', 'Gene', (62, 66)) ('variants', 'Var', (50, 58)) ('men', 'Species', '9606', (109, 112)) ('CDKN2B', 'Gene', (76, 82)) 906 31034483 In Denmark, patients with early onset RCC and families with accumulation of RCCs are usually screened for variants in four genes: VHL, FH, FLCN and MET. ('RCC', 'Disease', (38, 41)) ('patients', 'Species', '9606', (12, 20)) ('RCC', 'Disease', 'MESH:C538614', (76, 79)) ('variants', 'Var', (106, 114)) ('RCC', 'Disease', (76, 79)) ('RCC', 'Phenotype', 'HP:0005584', (76, 79)) ('RCCs', 'Phenotype', 'HP:0005584', (76, 80)) ('FLCN', 'Gene', (139, 143)) ('VHL', 'Gene', (130, 133)) ('VHL', 'Gene', '7428', (130, 133)) ('MET', 'Gene', (148, 151)) ('RCC', 'Phenotype', 'HP:0005584', (38, 41)) ('FLCN', 'Gene', '201163', (139, 143)) ('RCC', 'Disease', 'MESH:C538614', (38, 41)) 907 31034483 At Copenhagen University Hospital SDHB-screening is also performed, since pathogenic variants in SDHB are correlated with an increased risk of paraganglioma, pheochromocytoma and RCC and standard chromosome analysis is performed to examine for the known chromosome translocation t(3;8)(p14.2;q24.1). ('SDHB', 'Gene', (97, 101)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (158, 174)) ('SDHB', 'Gene', '6390', (97, 101)) ('variants', 'Var', (85, 93)) ('paraganglioma', 'Phenotype', 'HP:0002668', (143, 156)) ('paraganglioma', 'Disease', (143, 156)) ('pheochromocytoma', 'Disease', (158, 174)) ('SDHB', 'Gene', '6390', (34, 38)) ('t(3;8)(p14.2;q24.1)', 'STRUCTURAL_ABNORMALITY', 'None', (279, 298)) ('SDHB', 'Gene', (34, 38)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (158, 174)) ('RCC', 'Phenotype', 'HP:0005584', (179, 182)) ('paraganglioma', 'Disease', 'MESH:D010235', (143, 156)) ('RCC', 'Disease', 'MESH:C538614', (179, 182)) ('RCC', 'Disease', (179, 182)) 908 31034483 We have performed analyses of the aforementioned RCC causative genes and screened for variants in the putative RCC genes BAP1, MITF and CDKN2B. ('RCC', 'Disease', (49, 52)) ('BAP1', 'Gene', '8314', (121, 125)) ('RCC', 'Disease', 'MESH:C538614', (111, 114)) ('RCC', 'Disease', (111, 114)) ('RCC', 'Phenotype', 'HP:0005584', (111, 114)) ('MITF', 'Gene', '4286', (127, 131)) ('MITF', 'Gene', (127, 131)) ('CDKN2B', 'Gene', (136, 142)) ('BAP1', 'Gene', (121, 125)) ('variants', 'Var', (86, 94)) ('CDKN2B', 'Gene', '1030', (136, 142)) ('men', 'Species', '9606', (39, 42)) ('RCC', 'Phenotype', 'HP:0005584', (49, 52)) ('RCC', 'Disease', 'MESH:C538614', (49, 52)) 913 31034483 Patients with a previously identified pathogenic variant in a renal cancer predisposition gene were not included. ('cancer', 'Phenotype', 'HP:0002664', (68, 74)) ('renal cancer', 'Disease', (62, 74)) ('renal cancer', 'Phenotype', 'HP:0009726', (62, 74)) ('Patients', 'Species', '9606', (0, 8)) ('renal cancer', 'Disease', 'MESH:D007680', (62, 74)) ('variant', 'Var', (49, 56)) 917 31034483 Cohort 1 comprises thirty-two families, who had already been through genetic counselling and hence been screened for variants in one or more of the RCC predisposition genes VHL, FH, FLCN and MET without identification of any pathogenic mutations. ('VHL', 'Gene', (173, 176)) ('RCC', 'Disease', (148, 151)) ('FLCN', 'Gene', (182, 186)) ('VHL', 'Gene', '7428', (173, 176)) ('RCC', 'Phenotype', 'HP:0005584', (148, 151)) ('RCC', 'Disease', 'MESH:C538614', (148, 151)) ('variants', 'Var', (117, 125)) ('FLCN', 'Gene', '201163', (182, 186)) ('screened', 'Reg', (104, 112)) 922 31034483 These patients only consented to screening for variants in BAP1 and the known E318K-variant in MITF, which was performed prior to this study. ('variants', 'Var', (47, 55)) ('BAP1', 'Gene', (59, 63)) ('MITF', 'Gene', '4286', (95, 99)) ('MITF', 'Gene', (95, 99)) ('patients', 'Species', '9606', (6, 14)) ('E318K', 'Mutation', 'rs149617956', (78, 83)) ('BAP1', 'Gene', '8314', (59, 63)) ('E318K-variant', 'Var', (78, 91)) 943 31034483 MITF was screened for the E318K variant by TaqMan analysis as recently described. ('E318K', 'Mutation', 'rs149617956', (26, 31)) ('MITF', 'Gene', '4286', (0, 4)) ('E318K', 'Var', (26, 31)) ('MITF', 'Gene', (0, 4)) 945 31034483 BAP1, MITF and VHL variants are numbered according to accession number NM_004656.3, NM_000248.3 and NM_000551.3, respectively, following the guidelines from the Human Genome Variation Society (http://www.hgvs.org/varnomen). ('Human', 'Species', '9606', (161, 166)) ('BAP1', 'Gene', (0, 4)) ('VHL', 'Gene', (15, 18)) ('NM_000248.3', 'Var', (84, 95)) ('VHL', 'Gene', '7428', (15, 18)) ('BAP1', 'Gene', '8314', (0, 4)) ('men', 'Species', '9606', (218, 221)) ('MITF', 'Gene', '4286', (6, 10)) ('MITF', 'Gene', (6, 10)) ('NM_000551.3', 'Var', (100, 111)) ('variants', 'Var', (19, 27)) ('NM_004656.3', 'Var', (71, 82)) 947 31034483 'Likely benign' and 'benign' variants have a low probability of actually being pathogenic (0.001-0.049 and lower than 0.001, respectively) and are treated as 'no mutation detected' for RCC. ('RCC', 'Disease', (185, 188)) ('variants', 'Var', (29, 37)) ('RCC', 'Phenotype', 'HP:0005584', (185, 188)) ('RCC', 'Disease', 'MESH:C538614', (185, 188)) 955 31034483 Sixteen patients were screened for variants in one or more of the RCC predisposition genes VHL, FH, FLCN, MET or SDHB (Table 2). ('RCC', 'Disease', 'MESH:C538614', (66, 69)) ('FLCN', 'Gene', (100, 104)) ('SDHB', 'Gene', '6390', (113, 117)) ('MET', 'Gene', (106, 109)) ('variants', 'Var', (35, 43)) ('VHL', 'Gene', (91, 94)) ('SDHB', 'Gene', (113, 117)) ('VHL', 'Gene', '7428', (91, 94)) ('FLCN', 'Gene', '201163', (100, 104)) ('RCC', 'Disease', (66, 69)) ('RCC', 'Phenotype', 'HP:0005584', (66, 69)) ('patients', 'Species', '9606', (8, 16)) 956 31034483 No pathogenic variants were found in FH, FLCN, MET or SDHB, but we did find a start codon variant (c.3G>A, p.Met1Ile) and a missense variant (c.631A>C, p.Met211Leu) in VHL in a patient from cohort 2 (Fig 3). ('FLCN', 'Gene', (41, 45)) ('c.631A>C', 'Var', (142, 150)) ('SDHB', 'Gene', '6390', (54, 58)) ('patient', 'Species', '9606', (177, 184)) ('SDHB', 'Gene', (54, 58)) ('VHL', 'Gene', (168, 171)) ('p.Met211Leu', 'Mutation', 'rs200019083', (152, 163)) ('c.3G>A', 'Var', (99, 105)) ('c.631A>C', 'Mutation', 'rs200019083', (142, 150)) ('FLCN', 'Gene', '201163', (41, 45)) ('VHL', 'Gene', '7428', (168, 171)) ('p.Met1Ile', 'Mutation', 'rs578091032', (107, 116)) ('c.3G>A', 'Mutation', 'rs578091032', (99, 105)) 957 31034483 Both VHL variants are classified as class 3 variants (VUS) according to the classification guidelines from IARC. ('variants', 'Var', (9, 17)) ('VUS', 'Chemical', '-', (54, 57)) ('VHL', 'Gene', (5, 8)) ('VHL', 'Gene', '7428', (5, 8)) 958 31034483 In three patients of forty-seven tested, we found variants in BAP1; two missense variants (c.944A>C, p.Glu315Ala, Fig 4) and (c.1502G>A, p.Ser501Asn, Fig 5) and one intron variant (c.1729+8T>C, Table 3). ('p.Ser501Asn', 'Mutation', 'rs587777964', (137, 148)) ('patients', 'Species', '9606', (9, 17)) ('BAP1', 'Gene', '8314', (62, 66)) ('p.Glu315Ala', 'Mutation', 'rs149974450', (101, 112)) ('c.944A>C', 'Var', (91, 99)) ('c.1502G>A', 'Mutation', 'rs587777964', (126, 135)) ('BAP1', 'Gene', (62, 66)) ('c.1729+8T>C', 'Mutation', 'rs150945583', (181, 192)) ('c.944A>C', 'Mutation', 'rs149974450', (91, 99)) ('c.1502G>A', 'Var', (126, 135)) 959 31034483 The missense variant c.944A>C, p.Glu315Ala is reported in the gnomAD database with a frequency of 0.016% in Europeans (non-Finnish). ('c.944A>C', 'Var', (21, 29)) ('p.Glu315Ala', 'Var', (31, 42)) ('p.Glu315Ala', 'Mutation', 'rs149974450', (31, 42)) ('c.944A>C', 'Mutation', 'rs149974450', (21, 29)) 960 31034483 The intron variant c.1729+8T>C (rs150945583), which is identified in the patient with two VHL variants, is reported in the gnomAD database with a frequency of 0.60% in Europeans (non-Finnish). ('VHL', 'Gene', '7428', (90, 93)) ('rs150945583', 'Mutation', 'rs150945583', (32, 43)) ('c.1729+8T>C', 'Mutation', 'rs150945583', (19, 30)) ('patient', 'Species', '9606', (73, 80)) ('VHL', 'Gene', (90, 93)) ('c.1729+8T>C', 'Var', (19, 30)) 961 31034483 Finally, the novel missense variant c.1502G>A, p.Ser501Asn is not reported in the gnomAD database and to our knowledge not in the literature, and is classified as a class 3 variant. ('p.Ser501Asn', 'Var', (47, 58)) ('p.Ser501Asn', 'Mutation', 'rs587777964', (47, 58)) ('c.1502G>A', 'Var', (36, 45)) ('c.1502G>A', 'Mutation', 'rs587777964', (36, 45)) 962 31034483 Sequencing for the E318K-variant in MITF was performed in forty-five patients with normal results. ('MITF', 'Gene', '4286', (36, 40)) ('MITF', 'Gene', (36, 40)) ('patients', 'Species', '9606', (69, 77)) ('E318K', 'Mutation', 'rs149617956', (19, 24)) ('E318K-variant', 'Var', (19, 32)) 963 31034483 In one family, we were able to collect DNA from two relatives with RCC and both were screened for the E318K variant with normal results. ('RCC', 'Phenotype', 'HP:0005584', (67, 70)) ('E318K', 'Mutation', 'rs149617956', (102, 107)) ('RCC', 'Disease', 'MESH:C538614', (67, 70)) ('RCC', 'Disease', (67, 70)) ('E318K', 'Var', (102, 107)) 964 31034483 In one family, the patient diagnosed with RCC was found to carry the E318K variant. ('RCC', 'Disease', 'MESH:C538614', (42, 45)) ('patient', 'Species', '9606', (19, 26)) ('E318K', 'Mutation', 'rs149617956', (69, 74)) ('E318K', 'Var', (69, 74)) ('RCC', 'Disease', (42, 45)) ('RCC', 'Phenotype', 'HP:0005584', (42, 45)) 966 31034483 Two daughters were diagnosed with melanoma, one of whom was a carrier of the E318K-variant. ('E318K-variant', 'Var', (77, 90)) ('melanoma', 'Disease', 'MESH:D008545', (34, 42)) ('melanoma', 'Phenotype', 'HP:0002861', (34, 42)) ('melanoma', 'Disease', (34, 42)) ('diagnosed', 'Reg', (19, 28)) ('E318K', 'Mutation', 'rs149617956', (77, 82)) 980 31034483 Forty-six families in the current study, including thirteen families with melanoma, have been screened for the known E318K-variant in MITF, but the variant has only been found in one family, which has previously been published. ('melanoma', 'Disease', 'MESH:D008545', (74, 82)) ('E318K', 'Mutation', 'rs149617956', (117, 122)) ('MITF', 'Gene', (134, 138)) ('melanoma', 'Disease', (74, 82)) ('E318K-variant', 'Var', (117, 130)) ('MITF', 'Gene', '4286', (134, 138)) ('melanoma', 'Phenotype', 'HP:0002861', (74, 82)) 983 31034483 The c.1502G>A, p.Ser501Asn variant in BAP1 in family 1013 has not previously been reported. ('c.1502G>A', 'Var', (4, 13)) ('p.Ser501Asn', 'Var', (15, 26)) ('BAP1', 'Gene', (38, 42)) ('c.1502G>A', 'Mutation', 'rs587777964', (4, 13)) ('p.Ser501Asn', 'Mutation', 'rs587777964', (15, 26)) ('BAP1', 'Gene', '8314', (38, 42)) 984 31034483 Pathogenic clues include the highly conserved nucleotide and amino acid involved, and a SIFT and MutationTaster prediction as 'deleterious'. ('MutationTaster', 'Var', (97, 111)) ('SIFT', 'Disease', (88, 92)) ('SIFT', 'Disease', 'None', (88, 92)) 985 31034483 However, the variant was not found in two cancer-free FFPE samples collected from the proband's brother also diagnosed with RCC (II:1, Fig 5) and thus did not segregate with RCC in the family. ('RCC', 'Disease', (124, 127)) ('RCC', 'Phenotype', 'HP:0005584', (124, 127)) ('RCC', 'Disease', 'MESH:C538614', (124, 127)) ('cancer', 'Phenotype', 'HP:0002664', (42, 48)) ('variant', 'Var', (13, 20)) ('cancer', 'Disease', (42, 48)) ('cancer', 'Disease', 'MESH:D009369', (42, 48)) ('RCC', 'Disease', (174, 177)) ('RCC', 'Phenotype', 'HP:0005584', (174, 177)) ('RCC', 'Disease', 'MESH:C538614', (174, 177)) 988 31034483 The c.944A>C, p.Glu315Ala variant in BAP1 in family 5001 has not been reported in families with BAP1-associated cancers but has a population frequency of 0.016%. ('BAP1', 'Gene', (96, 100)) ('cancers', 'Phenotype', 'HP:0002664', (112, 119)) ('c.944A>C', 'Var', (4, 12)) ('p.Glu315Ala', 'Var', (14, 25)) ('cancer', 'Phenotype', 'HP:0002664', (112, 118)) ('c.944A>C', 'Mutation', 'rs149974450', (4, 12)) ('cancers', 'Disease', 'MESH:D009369', (112, 119)) ('BAP1', 'Gene', '8314', (37, 41)) ('cancers', 'Disease', (112, 119)) ('BAP1', 'Gene', (37, 41)) ('p.Glu315Ala', 'Mutation', 'rs149974450', (14, 25)) ('BAP1', 'Gene', '8314', (96, 100)) 992 31034483 The start codon variant (c.3G>A, p.Met1Ile) and missense variant (c.631A>C, p.Met211Leu) in VHL in family 6002 was found in a patient (III:1, Fig 3), who was diagnosed with ccRCC at age twenty-eight, but neither he nor any family member have other VHL-manifestations. ('c.3G>A', 'Var', (25, 31)) ('p.Met211Leu', 'Mutation', 'rs200019083', (76, 87)) ('p.Met1Ile', 'Mutation', 'rs578091032', (33, 42)) ('c.631A>C', 'Var', (66, 74)) ('c.3G>A', 'Mutation', 'rs578091032', (25, 31)) ('VHL', 'Gene', (92, 95)) ('patient', 'Species', '9606', (126, 133)) ('p.Met211Leu', 'Var', (76, 87)) ('VHL', 'Gene', '7428', (92, 95)) ('RCC', 'Disease', (175, 178)) ('c.631A>C', 'Mutation', 'rs200019083', (66, 74)) ('RCC', 'Phenotype', 'HP:0005584', (175, 178)) ('VHL', 'Gene', (248, 251)) ('RCC', 'Disease', 'MESH:C538614', (175, 178)) ('VHL', 'Gene', '7428', (248, 251)) 993 31034483 The start codon variant substitutes the initial methionine, thus skipping the native start codon with a yet unknown effect on VHL translation. ('variant', 'Var', (16, 23)) ('methionine', 'Chemical', 'MESH:D008715', (48, 58)) ('VHL', 'Gene', (126, 129)) ('methionine', 'MPA', (48, 58)) ('skipping', 'NegReg', (65, 73)) ('VHL', 'Gene', '7428', (126, 129)) 994 31034483 An alternative start codon at codon 54, which harbors the next methionine, is presumed to initiate VHL translation, thus forming an alternative protein product, which is thought to possess tumor suppressor properties partially similar to wildtype VHL. ('tumor', 'Disease', (189, 194)) ('methionine', 'Var', (63, 73)) ('VHL', 'Gene', (99, 102)) ('VHL', 'Gene', '7428', (99, 102)) ('VHL', 'Gene', (247, 250)) ('tumor', 'Disease', 'MESH:D009369', (189, 194)) ('VHL', 'Gene', '7428', (247, 250)) ('methionine', 'Chemical', 'MESH:D008715', (63, 73)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) 997 31034483 It is possible that mosaicism of a third, and pathogenic, variant in VHL could explain the mild VHL-phenotype. ('variant', 'Var', (58, 65)) ('VHL', 'Gene', (96, 99)) ('VHL', 'Gene', (69, 72)) ('VHL', 'Gene', '7428', (96, 99)) ('VHL', 'Gene', '7428', (69, 72)) 1000 31034483 Evidence suggests that the E318K-variant plays a role in the development of melanoma but the role in the development of RCC is unclear. ('melanoma', 'Disease', (76, 84)) ('melanoma', 'Disease', 'MESH:D008545', (76, 84)) ('E318K', 'Mutation', 'rs149617956', (27, 32)) ('E318K-variant', 'Var', (27, 40)) ('RCC', 'Disease', 'MESH:C538614', (120, 123)) ('RCC', 'Disease', (120, 123)) ('RCC', 'Phenotype', 'HP:0005584', (120, 123)) ('men', 'Species', '9606', (112, 115)) ('men', 'Species', '9606', (68, 71)) ('melanoma', 'Phenotype', 'HP:0002861', (76, 84)) 1001 31034483 Recent studies do not find an association between the E318K-variant and the development of RCC, neither does the current study. ('E318K', 'Mutation', 'rs149617956', (54, 59)) ('men', 'Species', '9606', (83, 86)) ('RCC', 'Disease', 'MESH:C538614', (91, 94)) ('RCC', 'Disease', (91, 94)) ('RCC', 'Phenotype', 'HP:0005584', (91, 94)) ('E318K-variant', 'Var', (54, 67)) 1002 31034483 A possible association between the E318K-variant and the development of pheochromocytoma and paraganglioma has been proposed recently by Castro-Vega et al, illustrating that the cancer spectrum of the E318K-variant, if any, is not yet fully elucidated. ('pheochromocytoma', 'Disease', (72, 88)) ('cancer', 'Phenotype', 'HP:0002664', (178, 184)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (72, 88)) ('paraganglioma', 'Disease', 'MESH:D010235', (93, 106)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (72, 88)) ('E318K-variant', 'Var', (201, 214)) ('cancer', 'Disease', (178, 184)) ('cancer', 'Disease', 'MESH:D009369', (178, 184)) ('E318K-variant', 'Var', (35, 48)) ('paraganglioma', 'Disease', (93, 106)) ('E318K', 'Mutation', 'rs149617956', (35, 40)) ('paraganglioma', 'Phenotype', 'HP:0002668', (93, 106)) ('men', 'Species', '9606', (64, 67)) ('E318K', 'Mutation', 'rs149617956', (201, 206)) 1003 31034483 Further studies should be performed in renal cancer families to elucidate the impact of the E318K-variant in the development of RCC. ('renal cancer', 'Disease', 'MESH:D007680', (39, 51)) ('RCC', 'Disease', 'MESH:C538614', (128, 131)) ('RCC', 'Disease', (128, 131)) ('renal cancer', 'Phenotype', 'HP:0009726', (39, 51)) ('RCC', 'Phenotype', 'HP:0005584', (128, 131)) ('cancer', 'Phenotype', 'HP:0002664', (45, 51)) ('renal cancer', 'Disease', (39, 51)) ('E318K', 'Mutation', 'rs149617956', (92, 97)) ('E318K-variant', 'Var', (92, 105)) ('men', 'Species', '9606', (120, 123)) 1004 31034483 We found no variants in CDKN2B and are therefore not able to confirm the findings of Jafri et al regarding CDKN2B as a RCC predisposing gene. ('CDKN2B', 'Gene', '1030', (107, 113)) ('RCC', 'Phenotype', 'HP:0005584', (119, 122)) ('CDKN2B', 'Gene', (24, 30)) ('RCC', 'Disease', 'MESH:C538614', (119, 122)) ('variants', 'Var', (12, 20)) ('RCC', 'Disease', (119, 122)) ('CDKN2B', 'Gene', '1030', (24, 30)) ('CDKN2B', 'Gene', (107, 113)) 1005 31034483 Two different putative RCC-genes include PTEN known for its involvement in Cowden syndrome, in which patients have a genetic predisposition to RCC, and PBRM1 in which a heterozygote germline variant was found to segregate with RCC in four affected family members in a French RCC-family. ('involvement', 'Reg', (60, 71)) ('RCC', 'Disease', 'MESH:C538614', (23, 26)) ('PBRM1', 'Gene', (152, 157)) ('Cowden syndrome', 'Disease', 'MESH:D006223', (75, 90)) ('RCC', 'Disease', (227, 230)) ('RCC', 'Disease', 'MESH:C538614', (275, 278)) ('patients', 'Species', '9606', (101, 109)) ('RCC', 'Phenotype', 'HP:0005584', (227, 230)) ('variant', 'Var', (191, 198)) ('PTEN', 'Gene', (41, 45)) ('RCC', 'Disease', 'MESH:C538614', (227, 230)) ('Cowden syndrome', 'Disease', (75, 90)) ('RCC', 'Phenotype', 'HP:0005584', (143, 146)) ('RCC', 'Disease', (143, 146)) ('PTEN', 'Gene', '5728', (41, 45)) ('men', 'Species', '9606', (67, 70)) ('RCC', 'Phenotype', 'HP:0005584', (23, 26)) ('RCC', 'Disease', (23, 26)) ('RCC', 'Disease', 'MESH:C538614', (143, 146)) ('PBRM1', 'Gene', '55193', (152, 157)) ('RCC', 'Disease', (275, 278)) ('RCC', 'Phenotype', 'HP:0005584', (275, 278)) 1006 31034483 The proband of one family in the current study was screened for variants in PTEN prior to inclusion, but in the remaining families PTEN screening was not considered relevant by the Departments of Clinical Genetics initially performing the genetic counselling. ('PTEN', 'Gene', (131, 135)) ('PTEN', 'Gene', (76, 80)) ('PTEN', 'Gene', '5728', (131, 135)) ('PTEN', 'Gene', '5728', (76, 80)) ('men', 'Species', '9606', (187, 190)) ('variants', 'Var', (64, 72)) 1027 31034483 Here ten different histological subtypes of RCCs are described (clear cell, multilocular cystic, papillary, chromophobe, collecting duct carcinoma, medullary carcinoma, RCC associated with Xp11.2 translocations, RCC associated with neuroblastoma, mucinous, tubular and spindle cell carcinomas and the unclassified carcinomas). ('associated', 'Reg', (216, 226)) ('neuroblastoma', 'Disease', (232, 245)) ('RCC', 'Disease', (44, 47)) ('RCC', 'Phenotype', 'HP:0005584', (212, 215)) ('RCC', 'Phenotype', 'HP:0005584', (44, 47)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (232, 245)) ('RCC', 'Disease', 'MESH:C538614', (212, 215)) ('carcinoma', 'Disease', 'MESH:D002277', (282, 291)) ('RCC', 'Phenotype', 'HP:0005584', (169, 172)) ('neuroblastoma', 'Disease', 'MESH:D009447', (232, 245)) ('RCC', 'Disease', (169, 172)) ('carcinoma', 'Disease', 'MESH:D002277', (314, 323)) ('carcinomas', 'Disease', (282, 292)) ('carcinomas', 'Disease', (314, 324)) ('RCC', 'Disease', 'MESH:C538614', (44, 47)) ('carcinoma', 'Disease', 'MESH:D002277', (137, 146)) ('associated', 'Reg', (173, 183)) ('carcinoma', 'Phenotype', 'HP:0030731', (158, 167)) ('carcinoma', 'Disease', (158, 167)) ('RCC', 'Disease', 'MESH:C538614', (169, 172)) ('mucinous', 'Disease', (247, 255)) ('RCCs', 'Phenotype', 'HP:0005584', (44, 48)) ('Xp11.2', 'Gene', (189, 195)) ('translocations', 'Var', (196, 210)) ('carcinoma', 'Phenotype', 'HP:0030731', (282, 291)) ('carcinomas', 'Disease', 'MESH:D002277', (282, 292)) ('carcinomas', 'Phenotype', 'HP:0030731', (282, 292)) ('carcinoma', 'Phenotype', 'HP:0030731', (314, 323)) ('carcinomas', 'Phenotype', 'HP:0030731', (314, 324)) ('carcinoma', 'Disease', (282, 291)) ('carcinomas', 'Disease', 'MESH:D002277', (314, 324)) ('carcinoma', 'Phenotype', 'HP:0030731', (137, 146)) ('carcinoma', 'Disease', 'MESH:D002277', (158, 167)) ('RCC', 'Disease', (212, 215)) ('carcinoma', 'Disease', (314, 323)) ('carcinoma', 'Disease', (137, 146)) 1032 31034483 Few E318K-carriers have been diagnosed with RCC, but the most prevalent histological subtype described in the literature is clear cell carcinoma. ('E318K', 'Mutation', 'rs149617956', (4, 9)) ('carcinoma', 'Disease', 'MESH:D002277', (135, 144)) ('carcinoma', 'Phenotype', 'HP:0030731', (135, 144)) ('RCC', 'Disease', 'MESH:C538614', (44, 47)) ('RCC', 'Disease', (44, 47)) ('RCC', 'Phenotype', 'HP:0005584', (44, 47)) ('E318K-carriers', 'Var', (4, 18)) ('carcinoma', 'Disease', (135, 144)) 1039 31034483 We screened forty-nine family members in forty-eight families for variants in one or more of the RCC causative genes VHL (n = 10), FH (n = 11), FLCN (n = 10), MET (n = 11) and SDHB (n = 9) and the putative RCC-genes BAP1 (n = 47), MITF (n = 46) and CDKN2B (n = 43). ('MITF', 'Gene', '4286', (231, 235)) ('FLCN', 'Gene', (144, 148)) ('BAP1', 'Gene', (216, 220)) ('SDHB', 'Gene', (176, 180)) ('MET', 'Gene', (159, 162)) ('CDKN2B', 'Gene', '1030', (249, 255)) ('VHL', 'Gene', (117, 120)) ('MITF', 'Gene', (231, 235)) ('variants', 'Var', (66, 74)) ('RCC', 'Disease', (97, 100)) ('RCC', 'Phenotype', 'HP:0005584', (97, 100)) ('VHL', 'Gene', '7428', (117, 120)) ('BAP1', 'Gene', '8314', (216, 220)) ('RCC', 'Phenotype', 'HP:0005584', (206, 209)) ('RCC', 'Disease', (206, 209)) ('SDHB', 'Gene', '6390', (176, 180)) ('RCC', 'Disease', 'MESH:C538614', (97, 100)) ('FLCN', 'Gene', '201163', (144, 148)) ('CDKN2B', 'Gene', (249, 255)) ('RCC', 'Disease', 'MESH:C538614', (206, 209)) 1041 31034483 Furthermore, we found three VUS's in BAP1, of which one was novel and non-segregating in the family, and the E318K variant in MITF in one patient of a family with melanoma and RCC. ('E318K', 'Mutation', 'rs149617956', (109, 114)) ('RCC', 'Disease', (176, 179)) ('RCC', 'Phenotype', 'HP:0005584', (176, 179)) ('melanoma', 'Disease', 'MESH:D008545', (163, 171)) ('melanoma', 'Phenotype', 'HP:0002861', (163, 171)) ('melanoma', 'Disease', (163, 171)) ('RCC', 'Disease', 'MESH:C538614', (176, 179)) ('E318K', 'Var', (109, 114)) ("VUS's", 'Disease', 'MESH:D010300', (28, 33)) ('MITF', 'Gene', '4286', (126, 130)) ('MITF', 'Gene', (126, 130)) ('BAP1', 'Gene', '8314', (37, 41)) ('patient', 'Species', '9606', (138, 145)) ('BAP1', 'Gene', (37, 41)) ('VUS', 'Disease', (28, 31)) 1042 31034483 Since the BAP1 variants are classified as VUS's, a standardized surveillance program for variant carriers is not relevant. ('BAP1', 'Gene', (10, 14)) ("VUS's", 'Disease', 'MESH:D010300', (42, 47)) ('variants', 'Var', (15, 23)) ('VUS', 'Disease', (42, 45)) ('BAP1', 'Gene', '8314', (10, 14)) 1043 31034483 A surveillance program has not been established for E318K variant carriers, but increased awareness of potentially malignant cutaneous lesions and symptoms of renal disease should be advised. ('renal disease', 'Disease', 'MESH:D007674', (159, 172)) ('malignant cutaneous lesions', 'Disease', (115, 142)) ('E318K', 'Mutation', 'rs149617956', (52, 57)) ('malignant cutaneous lesions', 'Disease', 'MESH:D009369', (115, 142)) ('renal disease', 'Disease', (159, 172)) ('E318K', 'Var', (52, 57)) ('renal disease', 'Phenotype', 'HP:0000112', (159, 172)) 1045 31034483 The results of the study indicate that germline variants in BAP1, MITF and CDKN2B are not frequent in Danish families with suspected hereditary predisposition to renal cancer, and in the families of this study a possible genetic background of RCC is still unresolved. ('cancer', 'Phenotype', 'HP:0002664', (168, 174)) ('variants', 'Var', (48, 56)) ('CDKN2B', 'Gene', (75, 81)) ('renal cancer', 'Disease', (162, 174)) ('BAP1', 'Gene', '8314', (60, 64)) ('RCC', 'Disease', (243, 246)) ('RCC', 'Disease', 'MESH:C538614', (243, 246)) ('CDKN2B', 'Gene', '1030', (75, 81)) ('renal cancer', 'Disease', 'MESH:D007680', (162, 174)) ('renal cancer', 'Phenotype', 'HP:0009726', (162, 174)) ('RCC', 'Phenotype', 'HP:0005584', (243, 246)) ('MITF', 'Gene', '4286', (66, 70)) ('MITF', 'Gene', (66, 70)) ('BAP1', 'Gene', (60, 64)) 1049 23714463 For this review, we focus on three rare syndromes and their associated genetic mutations including BAP1, TP53, and SDHx (SDHA, SDHB, SDHC, SDHD, SDHAF2). ('SDHC', 'Gene', (133, 137)) ('BAP1', 'Gene', (99, 103)) ('SDHD', 'Gene', (139, 143)) ('SDH', 'Gene', '6390', (121, 124)) ('SDHAF2', 'Gene', '54949', (145, 151)) ('SDHAF2', 'Gene', (145, 151)) ('SDH', 'Gene', (145, 148)) ('SDHB', 'Gene', (127, 131)) ('SDH', 'Gene', (115, 118)) ('SDH', 'Gene', '6390', (127, 130)) ('mutations', 'Var', (79, 88)) ('SDH', 'Gene', (139, 142)) ('SDH', 'Gene', (121, 124)) ('TP53', 'Gene', (105, 109)) ('SDH', 'Gene', '6390', (133, 136)) ('SDHx', 'Chemical', '-', (115, 119)) ('SDH', 'Gene', (127, 130)) ('SDHC', 'Gene', '6391', (133, 137)) ('BAP1', 'Gene', '8314', (99, 103)) ('SDH', 'Gene', (133, 136)) ('SDH', 'Gene', '6390', (145, 148)) ('SDHD', 'Gene', '6392', (139, 143)) ('SDHB', 'Gene', '6390', (127, 131)) ('SDH', 'Gene', '6390', (115, 118)) ('SDH', 'Gene', '6390', (139, 142)) ('TP53', 'Gene', '7157', (105, 109)) 1050 23714463 BAP1 encodes an enzyme that catalyzes the removal of ubiquitin from protein substrates, and germline mutations of BAP1 cause a novel cancer syndrome characterized by high incidence of benign atypical melanocytic tumors, uveal melanomas, cutaneous melanomas, malignant mesotheliomas, and potentially other cancers. ('tumor', 'Phenotype', 'HP:0002664', (212, 217)) ('benign atypical melanocytic tumors', 'Disease', (184, 218)) ('BAP1', 'Gene', (114, 118)) ('cutaneous melanomas', 'Phenotype', 'HP:0012056', (237, 256)) ('cutaneous melanomas', 'Disease', 'MESH:C562393', (237, 256)) ('uveal melanoma', 'Phenotype', 'HP:0007716', (220, 234)) ('cancers', 'Disease', 'MESH:D009369', (305, 312)) ('BAP1', 'Gene', (0, 4)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (237, 255)) ('tumors', 'Phenotype', 'HP:0002664', (212, 218)) ('cause', 'Reg', (119, 124)) ('malignant mesotheliomas', 'Phenotype', 'HP:0100001', (258, 281)) ('uveal melanomas', 'Disease', (220, 235)) ('uveal melanomas', 'Phenotype', 'HP:0007716', (220, 235)) ('cancer syndrome', 'Disease', 'MESH:D009369', (133, 148)) ('melanomas', 'Phenotype', 'HP:0002861', (226, 235)) ('malignant mesothelioma', 'Phenotype', 'HP:0100001', (258, 280)) ('mutations', 'Var', (101, 110)) ('cutaneous melanomas', 'Disease', (237, 256)) ('cancer syndrome', 'Disease', (133, 148)) ('malignant mesotheliomas', 'Disease', (258, 281)) ('benign atypical melanocytic tumors', 'Disease', 'MESH:D009508', (184, 218)) ('melanoma', 'Phenotype', 'HP:0002861', (226, 234)) ('cancer', 'Phenotype', 'HP:0002664', (133, 139)) ('cancers', 'Phenotype', 'HP:0002664', (305, 312)) ('cancers', 'Disease', (305, 312)) ('BAP1', 'Gene', '8314', (114, 118)) ('malignant mesotheliomas', 'Disease', 'MESH:C562839', (258, 281)) ('melanoma', 'Phenotype', 'HP:0002861', (247, 255)) ('melanomas', 'Phenotype', 'HP:0002861', (247, 256)) ('uveal melanomas', 'Disease', 'MESH:C536494', (220, 235)) ('BAP1', 'Gene', '8314', (0, 4)) ('cancer', 'Phenotype', 'HP:0002664', (305, 311)) 1051 23714463 TP53 mutations cause Li-Fraumeni syndrome (LFS), a highly penetrant cancer syndrome associated with multiple tumors including but not limited to sarcomas, breast cancers, brain tumors, and adrenocortical carcinomas. ('cancer', 'Phenotype', 'HP:0002664', (68, 74)) ('breast cancers', 'Disease', 'MESH:D001943', (155, 169)) ('breast cancers', 'Disease', (155, 169)) ('cancer', 'Phenotype', 'HP:0002664', (162, 168)) ('brain tumors', 'Disease', (171, 183)) ('tumors', 'Phenotype', 'HP:0002664', (109, 115)) ('cause', 'Reg', (15, 20)) ('Li-Fraumeni syndrome', 'Disease', (21, 41)) ('TP53', 'Gene', '7157', (0, 4)) ('multiple tumors', 'Disease', 'MESH:D009369', (100, 115)) ('breast cancers', 'Phenotype', 'HP:0003002', (155, 169)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('breast cancer', 'Phenotype', 'HP:0003002', (155, 168)) ('Li-Fraumeni syndrome', 'Disease', 'MESH:D016864', (21, 41)) ('adrenocortical carcinomas', 'Phenotype', 'HP:0006744', (189, 214)) ('adrenocortical carcinomas', 'Disease', (189, 214)) ('carcinoma', 'Phenotype', 'HP:0030731', (204, 213)) ('mutations', 'Var', (5, 14)) ('cancer syndrome', 'Disease', 'MESH:D009369', (68, 83)) ('carcinomas', 'Phenotype', 'HP:0030731', (204, 214)) ('tumors', 'Phenotype', 'HP:0002664', (177, 183)) ('TP53', 'Gene', (0, 4)) ('sarcoma', 'Phenotype', 'HP:0100242', (145, 152)) ('multiple tumors', 'Disease', (100, 115)) ('brain tumors', 'Disease', 'MESH:D001932', (171, 183)) ('sarcomas', 'Disease', 'MESH:D012509', (145, 153)) ('adrenocortical carcinomas', 'Disease', 'MESH:D018268', (189, 214)) ('brain tumors', 'Phenotype', 'HP:0030692', (171, 183)) ('sarcomas', 'Phenotype', 'HP:0100242', (145, 153)) ('tumor', 'Phenotype', 'HP:0002664', (177, 182)) ('sarcomas', 'Disease', (145, 153)) ('cancer syndrome', 'Disease', (68, 83)) ('cancers', 'Phenotype', 'HP:0002664', (162, 169)) 1053 23714463 SDH is a mitochondrial enzyme complex involved in the tricarboxylic acid (TCA) cycle, and germline SDHx mutations lead to increased succinate with subsequent paragangliomas, pheochromocytomas, renal cell carcinomas (RCCs), gastrointestinal stromal tumors (GISTs), and other rarer cancers. ('succinate', 'MPA', (132, 141)) ('cancers', 'Phenotype', 'HP:0002664', (280, 287)) ('SDH', 'Gene', (99, 102)) ('cancers', 'Disease', (280, 287)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (223, 254)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (223, 254)) ('cancer', 'Phenotype', 'HP:0002664', (280, 286)) ('SDH', 'Gene', '6390', (0, 3)) ('TCA', 'Chemical', 'MESH:D014233', (74, 77)) ('paragangliomas', 'Disease', 'MESH:D010235', (158, 172)) ('paraganglioma', 'Phenotype', 'HP:0002668', (158, 171)) ('paragangliomas', 'Phenotype', 'HP:0002668', (158, 172)) ('mutations', 'Var', (104, 113)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (193, 213)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (174, 191)) ('pheochromocytomas', 'Disease', (174, 191)) ('increased', 'PosReg', (122, 131)) ('RCC', 'Disease', (216, 219)) ('RCC', 'Phenotype', 'HP:0005584', (216, 219)) ('gastrointestinal stromal tumors', 'Disease', (223, 254)) ('gliomas', 'Phenotype', 'HP:0009733', (165, 172)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (193, 214)) ('carcinoma', 'Phenotype', 'HP:0030731', (204, 213)) ('SDH', 'Gene', (0, 3)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (54, 72)) ('cancers', 'Disease', 'MESH:D009369', (280, 287)) ('SDHx', 'Chemical', '-', (99, 103)) ('carcinomas', 'Phenotype', 'HP:0030731', (204, 214)) ('increased succinate', 'Phenotype', 'HP:0020149', (122, 141)) ('renal cell carcinomas', 'Disease', (193, 214)) ('SDH', 'Gene', '6390', (99, 102)) ('RCC', 'Disease', 'MESH:C538614', (216, 219)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (174, 191)) ('tumor', 'Phenotype', 'HP:0002664', (248, 253)) ('paragangliomas', 'Disease', (158, 172)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (193, 214)) ('succinate', 'Chemical', 'MESH:D019802', (132, 141)) ('GISTs', 'Phenotype', 'HP:0100723', (256, 261)) ('tumors', 'Phenotype', 'HP:0002664', (248, 254)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (174, 190)) ('RCCs', 'Phenotype', 'HP:0005584', (216, 220)) 1061 23714463 Nearly 15 years later, Harbor and colleagues reported a high frequency of BAP1 mutations in metastasizing uveal melanoma (UM), including one that was germline in origin. ('uveal melanoma', 'Disease', 'MESH:C536494', (106, 120)) ('BAP1', 'Gene', '8314', (74, 78)) ('melanoma', 'Phenotype', 'HP:0002861', (112, 120)) ('UM', 'Phenotype', 'HP:0007716', (122, 124)) ('uveal melanoma', 'Phenotype', 'HP:0007716', (106, 120)) ('uveal melanoma', 'Disease', (106, 120)) ('BAP1', 'Gene', (74, 78)) ('mutations', 'Var', (79, 88)) 1063 23714463 In one report, germline inactivating mutations of BAP1 were discovered in two families with high incidence of malignant mesothelioma (MM), UM, and other cancers. ('malignant mesothelioma', 'Phenotype', 'HP:0100001', (110, 132)) ('cancers', 'Disease', 'MESH:D009369', (153, 160)) ('germline inactivating mutations', 'Var', (15, 46)) ('cancers', 'Disease', (153, 160)) ('malignant mesothelioma', 'Disease', (110, 132)) ('discovered', 'Reg', (60, 70)) ('BAP1', 'Gene', '8314', (50, 54)) ('UM', 'Phenotype', 'HP:0007716', (139, 141)) ('cancer', 'Phenotype', 'HP:0002664', (153, 159)) ('malignant mesothelioma', 'Disease', 'MESH:C562839', (110, 132)) ('BAP1', 'Gene', (50, 54)) ('cancers', 'Phenotype', 'HP:0002664', (153, 160)) 1064 23714463 In the second report, two families were described in which germline mutations in BAP1 predisposed to multiple melanocytic tumors ranging from epithelioid nevi to atypical melanocytic tumors, with some mutation carriers developing UM or cutaneous melanoma (CM). ('tumor', 'Phenotype', 'HP:0002664', (183, 188)) ('epithelioid nevi', 'Disease', (142, 158)) ('multiple melanocytic tumors', 'Disease', (101, 128)) ('BAP1', 'Gene', (81, 85)) ('melanoma', 'Phenotype', 'HP:0002861', (246, 254)) ('cutaneous melanoma', 'Disease', (236, 254)) ('melanocytic tumors', 'Disease', 'MESH:D009508', (110, 128)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (236, 254)) ('cutaneous melanoma', 'Disease', 'MESH:C562393', (236, 254)) ('tumors', 'Phenotype', 'HP:0002664', (122, 128)) ('predisposed to', 'Reg', (86, 100)) ('melanocytic tumors', 'Disease', 'MESH:D009508', (171, 189)) ('developing', 'PosReg', (219, 229)) ('melanocytic tumors', 'Disease', (171, 189)) ('nevi to atypical melanocytic tumors', 'Phenotype', 'HP:0000995', (154, 189)) ('tumor', 'Phenotype', 'HP:0002664', (122, 127)) ('nevi', 'Phenotype', 'HP:0003764', (154, 158)) ('UM', 'Phenotype', 'HP:0007716', (230, 232)) ('germline mutations', 'Var', (59, 77)) ('tumors', 'Phenotype', 'HP:0002664', (183, 189)) ('multiple melanocytic tumors', 'Disease', 'MESH:D009508', (101, 128)) ('BAP1', 'Gene', '8314', (81, 85)) ('CM', 'Phenotype', 'HP:0012056', (256, 258)) 1065 23714463 Below, we focus on the involvement of BAP1 mutations in a new cancer predisposition disorder, now known as the BAP1 cancer syndrome. ('BAP1', 'Gene', '8314', (111, 115)) ('cancer', 'Phenotype', 'HP:0002664', (62, 68)) ('BAP1', 'Gene', (38, 42)) ('cancer', 'Disease', (116, 122)) ('cancer', 'Disease', 'MESH:D009369', (116, 122)) ('involvement', 'Reg', (23, 34)) ('cancer syndrome', 'Disease', 'MESH:D009369', (116, 131)) ('BAP1', 'Gene', (111, 115)) ('mutations', 'Var', (43, 52)) ('cancer', 'Disease', (62, 68)) ('cancer', 'Disease', 'MESH:D009369', (62, 68)) ('cancer', 'Phenotype', 'HP:0002664', (116, 122)) ('men', 'Species', '9606', (30, 33)) ('cancer syndrome', 'Disease', (116, 131)) ('BAP1', 'Gene', '8314', (38, 42)) 1066 23714463 Notably, however, somatic BAP1 mutations have also been reported in various sporadic tumors including MM, RCC, and a rare, distinct subset of melanocytic tumors known as atypical Spitz tumors (ASTs). ('tumors', 'Disease', 'MESH:D009369', (154, 160)) ('tumors', 'Disease', (185, 191)) ('tumors', 'Phenotype', 'HP:0002664', (85, 91)) ('BAP1', 'Gene', (26, 30)) ('Spitz tumors', 'Disease', (179, 191)) ('tumors', 'Disease', 'MESH:D009369', (185, 191)) ('melanocytic tumors', 'Disease', (142, 160)) ('melanocytic tumors', 'Disease', 'MESH:D009508', (142, 160)) ('RCC', 'Disease', (106, 109)) ('RCC', 'Phenotype', 'HP:0005584', (106, 109)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('tumors', 'Disease', (85, 91)) ('mutations', 'Var', (31, 40)) ('tumors', 'Phenotype', 'HP:0002664', (154, 160)) ('reported', 'Reg', (56, 64)) ('tumor', 'Phenotype', 'HP:0002664', (154, 159)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('RCC', 'Disease', 'MESH:C538614', (106, 109)) ('tumors', 'Disease', 'MESH:D009369', (85, 91)) ('tumors', 'Disease', (154, 160)) ('Spitz tumors', 'Disease', 'MESH:D018332', (179, 191)) ('tumors', 'Phenotype', 'HP:0002664', (185, 191)) ('BAP1', 'Gene', '8314', (26, 30)) 1069 23714463 Historically, the understanding of MM pathogenesis was understood in the context of somatic genetic losses within chromosome arms 3p, 9p, and 22q, the latter two specifically affecting CDKN2A and NF2, suggesting a multistep cascade involving the inactivation of multiple tumor suppressors. ('genetic', 'Var', (92, 99)) ('losses', 'NegReg', (100, 106)) ('CDKN2A', 'Gene', '1029', (185, 191)) ('tumor', 'Phenotype', 'HP:0002664', (271, 276)) ('affecting', 'Reg', (175, 184)) ('NF2', 'Gene', '4771', (196, 199)) ('tumor', 'Disease', (271, 276)) ('CDKN2A', 'Gene', (185, 191)) ('tumor', 'Disease', 'MESH:D009369', (271, 276)) ('NF2', 'Gene', (196, 199)) 1071 23714463 Bott and colleagues reported inactivating mutations in BAP1, a tumor suppressor gene located at 3p21.1, in 22% of sporadic MMs. ('tumor', 'Disease', (63, 68)) ('BAP1', 'Gene', (55, 59)) ('inactivating mutations', 'Var', (29, 51)) ('MMs', 'Disease', (123, 126)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('BAP1', 'Gene', '8314', (55, 59)) 1073 23714463 Moreover, heterozygous germline mutations of BAP1 were identified in two high-risk cancer families in which the predominant malignancy was MM; notably, one family also had two cases of UM, a tumor type previously shown to be associated with somatic BAP1 mutations. ('UM', 'Phenotype', 'HP:0007716', (185, 187)) ('BAP1', 'Gene', (45, 49)) ('tumor', 'Disease', 'MESH:D009369', (191, 196)) ('cancer', 'Phenotype', 'HP:0002664', (83, 89)) ('identified', 'Reg', (55, 65)) ('BAP1', 'Gene', '8314', (45, 49)) ('malignancy', 'Disease', 'MESH:D009369', (124, 134)) ('BAP1', 'Gene', '8314', (249, 253)) ('malignancy', 'Disease', (124, 134)) ('tumor', 'Disease', (191, 196)) ('tumor', 'Phenotype', 'HP:0002664', (191, 196)) ('cancer', 'Disease', 'MESH:D009369', (83, 89)) ('BAP1', 'Gene', (249, 253)) ('mutations', 'Var', (254, 263)) ('cancer', 'Disease', (83, 89)) 1079 23714463 Intriguingly, germline BAP1 mutations were also found in 2 of 26 sporadic MMs tested, and both patients with mutant BAP1 were previously diagnosed with UM. ('BAP1', 'Gene', (23, 27)) ('BAP1', 'Gene', (116, 120)) ('patients', 'Species', '9606', (95, 103)) ('MMs', 'Disease', (74, 77)) ('BAP1', 'Gene', '8314', (23, 27)) ('UM', 'Phenotype', 'HP:0007716', (152, 154)) ('mutant', 'Var', (109, 115)) ('found', 'Reg', (48, 53)) ('BAP1', 'Gene', '8314', (116, 120)) ('mutations', 'Var', (28, 37)) 1080 23714463 Concurrent work by Wiesner and colleagues revealed inactivating germline BAP1 mutations in two families with multiple benign melanocytic tumors; some affected individuals developed UM or CM, and one family member was subsequently diagnosed with MM. ('BAP1', 'Gene', '8314', (73, 77)) ('tumors', 'Phenotype', 'HP:0002664', (137, 143)) ('BAP1', 'Gene', (73, 77)) ('inactivating germline', 'Var', (51, 72)) ('mutations', 'Var', (78, 87)) ('melanocytic tumors', 'Disease', (125, 143)) ('melanocytic tumors', 'Disease', 'MESH:D009508', (125, 143)) ('CM', 'Phenotype', 'HP:0012056', (187, 189)) ('developed', 'PosReg', (171, 180)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) ('UM', 'Phenotype', 'HP:0007716', (181, 183)) ('germline', 'Var', (64, 72)) 1081 23714463 The existence of a BAP1-related melanocytic disorder was confirmed by a report of germline BAP1 inactivation in families with metastatic UM or with both UM and CM; and some carriers also had atypical melanocytic tumors. ('BAP1', 'Gene', (91, 95)) ('tumors', 'Phenotype', 'HP:0002664', (212, 218)) ('inactivation', 'Var', (96, 108)) ('UM', 'Phenotype', 'HP:0007716', (153, 155)) ('BAP1', 'Gene', '8314', (19, 23)) ('melanocytic tumors', 'Disease', 'MESH:D009508', (200, 218)) ('melanocytic disorder', 'Disease', 'MESH:D009508', (32, 52)) ('melanocytic disorder', 'Disease', (32, 52)) ('UM', 'Phenotype', 'HP:0007716', (137, 139)) ('melanocytic tumors', 'Disease', (200, 218)) ('tumor', 'Phenotype', 'HP:0002664', (212, 217)) ('BAP1', 'Gene', (19, 23)) ('BAP1', 'Gene', '8314', (91, 95)) ('metastatic UM', 'Disease', (126, 139)) ('CM', 'Disease', (160, 162)) ('CM', 'Phenotype', 'HP:0012056', (160, 162)) 1082 23714463 Another group reported a germline BAP1 mutation in a family with a wide variety of cancers, including three MMs, three UMs, and three CMs. ('cancers', 'Disease', 'MESH:D009369', (83, 90)) ('UM', 'Phenotype', 'HP:0007716', (119, 121)) ('UMs', 'Disease', (119, 122)) ('mutation', 'Var', (39, 47)) ('BAP1', 'Gene', (34, 38)) ('cancer', 'Phenotype', 'HP:0002664', (83, 89)) ('reported', 'Reg', (14, 22)) ('germline', 'Var', (25, 33)) ('CMs', 'Disease', (134, 137)) ('cancers', 'Phenotype', 'HP:0002664', (83, 90)) ('BAP1', 'Gene', '8314', (34, 38)) ('CM', 'Phenotype', 'HP:0012056', (134, 136)) ('MMs', 'Disease', (108, 111)) ('cancers', 'Disease', (83, 90)) 1083 23714463 More recently, a germline BAP1 mutation was identified in a family in which MM was found in four members, none with a history of asbestos exposure; one member also had multiple melanocytic tumors. ('BAP1', 'Gene', (26, 30)) ('multiple melanocytic tumors', 'Disease', 'MESH:D009508', (168, 195)) ('multiple melanocytic tumors', 'Disease', (168, 195)) ('mutation', 'Var', (31, 39)) ('tumors', 'Phenotype', 'HP:0002664', (189, 195)) ('BAP1', 'Gene', '8314', (26, 30)) ('asbestos', 'Chemical', 'MESH:D001194', (129, 137)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) 1085 23714463 The full tumor spectrum associated with germline BAP1 mutations has yet to be established, as suggested by recent report of a germline BAP1 splice mutation and truncating frameshift in a family with UM, CM, suspected MM, as well as paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (232, 245)) ('tumor', 'Disease', 'MESH:D009369', (9, 14)) ('paraganglioma', 'Disease', (232, 245)) ('BAP1', 'Gene', (49, 53)) ('BAP1', 'Gene', '8314', (135, 139)) ('truncating frameshift', 'Var', (160, 181)) ('mutations', 'Var', (54, 63)) ('CM', 'Phenotype', 'HP:0012056', (203, 205)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('tumor', 'Disease', (9, 14)) ('paraganglioma', 'Disease', 'MESH:D010235', (232, 245)) ('BAP1', 'Gene', (135, 139)) ('UM', 'Phenotype', 'HP:0007716', (199, 201)) ('BAP1', 'Gene', '8314', (49, 53)) 1091 23714463 Inactivating somatic mutations of BAP1 were identified in 26/31 (84%) metastasizing tumors, including one that was germline in origin. ('BAP1', 'Gene', (34, 38)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('tumors', 'Disease', 'MESH:D009369', (84, 90)) ('tumors', 'Disease', (84, 90)) ('identified', 'Reg', (44, 54)) ('tumors', 'Phenotype', 'HP:0002664', (84, 90)) ('BAP1', 'Gene', '8314', (34, 38)) ('Inactivating somatic mutations', 'Var', (0, 30)) 1095 23714463 Biallelic inactivation of BAP1 has been documented in multiple tumors from these high-risk families, strongly suggesting that BAP1 acts as a classical tumor suppressor gene. ('tumor', 'Disease', (63, 68)) ('BAP1', 'Gene', (26, 30)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('tumor', 'Phenotype', 'HP:0002664', (151, 156)) ('BAP1', 'Gene', (126, 130)) ('tumor', 'Disease', (151, 156)) ('tumors', 'Phenotype', 'HP:0002664', (63, 69)) ('Biallelic inactivation', 'Var', (0, 22)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('BAP1', 'Gene', '8314', (26, 30)) ('men', 'Species', '9606', (44, 47)) ('multiple tumors', 'Disease', 'MESH:D009369', (54, 69)) ('multiple tumors', 'Disease', (54, 69)) ('BAP1', 'Gene', '8314', (126, 130)) ('tumor', 'Disease', 'MESH:D009369', (151, 156)) 1105 23714463 Mutations of BAP1 and potentially genes encoding other PR-DUB components may alter the function of the holo-complex leading to tumorigenesis. ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('BAP1', 'Gene', (13, 17)) ('alter', 'Reg', (77, 82)) ('tumor', 'Disease', (127, 132)) ('Mutations', 'Var', (0, 9)) ('function', 'MPA', (87, 95)) ('BAP1', 'Gene', '8314', (13, 17)) ('tumor', 'Disease', 'MESH:D009369', (127, 132)) 1106 23714463 Germane to this, somatic ASXL1/2 alterations have been detected in human myelodysplastic disorders and solid tumors, and a conditional, systemic knockout model in which Bap1 was homozygously deleted in adult mice recapitulated features of human myelodysplastic syndrome. ('ASXL1/2', 'Gene', (25, 32)) ('human', 'Species', '9606', (239, 244)) ('tumors', 'Phenotype', 'HP:0002664', (109, 115)) ('solid tumors', 'Disease', 'MESH:D009369', (103, 115)) ('myelodysplastic disorders', 'Disease', (73, 98)) ('Bap1', 'Gene', '8314', (169, 173)) ('Bap1', 'Gene', (169, 173)) ('myelodysplastic syndrome', 'Disease', (245, 269)) ('ASXL1/2', 'Gene', '171023;55252', (25, 32)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('alterations', 'Var', (33, 44)) ('mice', 'Species', '10090', (208, 212)) ('detected', 'Reg', (55, 63)) ('myelodysplastic disorders', 'Phenotype', 'HP:0002863', (73, 98)) ('myelodysplastic syndrome', 'Phenotype', 'HP:0002863', (245, 269)) ('solid tumors', 'Disease', (103, 115)) ('myelodysplastic disorders', 'Disease', 'MESH:D009190', (73, 98)) ('human', 'Species', '9606', (67, 72)) ('myelodysplastic syndrome', 'Disease', 'MESH:D009190', (245, 269)) 1107 23714463 While the first two reports of germline inactivating BAP1 mutations focused on different disease entities:that is, one on families with a high incidence of MM, and the other on families with multiple melanocytic tumors:both studies found recurrent UMs as well. ('mutations', 'Var', (58, 67)) ('UM', 'Phenotype', 'HP:0007716', (248, 250)) ('tumors', 'Phenotype', 'HP:0002664', (212, 218)) ('multiple melanocytic tumors', 'Disease', 'MESH:D009508', (191, 218)) ('UMs', 'Disease', (248, 251)) ('BAP1', 'Gene', '8314', (53, 57)) ('multiple melanocytic tumors', 'Disease', (191, 218)) ('tumor', 'Phenotype', 'HP:0002664', (212, 217)) ('focused', 'Reg', (68, 75)) ('BAP1', 'Gene', (53, 57)) 1108 23714463 As proposed by Goldstein, current evidence supports the notion that these initial reports of germline BAP1 mutations were describing a single syndrome consisting of a range of tumors with varying penetrance. ('BAP1', 'Gene', (102, 106)) ('tumor', 'Phenotype', 'HP:0002664', (176, 181)) ('mutations', 'Var', (107, 116)) ('tumors', 'Disease', (176, 182)) ('tumors', 'Disease', 'MESH:D009369', (176, 182)) ('tumors', 'Phenotype', 'HP:0002664', (176, 182)) ('BAP1', 'Gene', '8314', (102, 106)) 1115 23714463 Moreover, why do BAP1 mutations predispose to cancer when present in the germ line, yet act as a late, somatic event in connection with UM metastasis? ('cancer', 'Disease', 'MESH:D009369', (46, 52)) ('cancer', 'Disease', (46, 52)) ('predispose', 'Reg', (32, 42)) ('BAP1', 'Gene', '8314', (17, 21)) ('mutations', 'Var', (22, 31)) ('cancer', 'Phenotype', 'HP:0002664', (46, 52)) ('UM', 'Phenotype', 'HP:0007716', (136, 138)) ('BAP1', 'Gene', (17, 21)) 1116 23714463 It is also unclear if variations in the number of melanocytic tumors and incidence of MM among BAP1 mutation carriers reflect differences in genetic background of affected individuals or differences in exposure to carcinogens. ('tumor', 'Phenotype', 'HP:0002664', (62, 67)) ('BAP1', 'Gene', (95, 99)) ('tumors', 'Phenotype', 'HP:0002664', (62, 68)) ('carriers', 'Reg', (109, 117)) ('mutation', 'Var', (100, 108)) ('BAP1', 'Gene', '8314', (95, 99)) ('melanocytic tumors', 'Disease', (50, 68)) ('melanocytic tumors', 'Disease', 'MESH:D009508', (50, 68)) 1118 23714463 BAP1 mutation carriers should be regularly monitored for evidence of early malignancy, and preventive measures such as avoidance of exposure to asbestos and sun should be implemented. ('asbestos', 'Chemical', 'MESH:D001194', (144, 152)) ('BAP1', 'Gene', (0, 4)) ('men', 'Species', '9606', (176, 179)) ('malignancy', 'Disease', 'MESH:D009369', (75, 85)) ('BAP1', 'Gene', '8314', (0, 4)) ('malignancy', 'Disease', (75, 85)) ('mutation', 'Var', (5, 13)) 1121 23714463 In 1990, germline TP53 mutations were discovered to be the underlying cause of the majority of LFS cases. ('TP53', 'Gene', '7157', (18, 22)) ('TP53', 'Gene', (18, 22)) ('mutations', 'Var', (23, 32)) ('cause', 'Reg', (70, 75)) ('LFS', 'Disease', (95, 98)) 1123 23714463 Approximately 1,800 different somatic and germline TP53 mutations have been reported, with most localized to the DNA binding domain (DBD) (http://p53.iarc.fr). ('mutations', 'Var', (56, 65)) ('TP53', 'Gene', (51, 55)) ('p53', 'Gene', (146, 149)) ('p53', 'Gene', '7157', (146, 149)) ('TP53', 'Gene', '7157', (51, 55)) 1124 23714463 Mutant p53 loss-of-function, dominant-negative and gain-of-function properties are all important for tumorigenesis in humans, with gain-of-function activities being particularly relevant. ('humans', 'Species', '9606', (118, 124)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('tumor', 'Disease', (101, 106)) ('p53', 'Gene', '7157', (7, 10)) ('gain-of-function', 'PosReg', (51, 67)) ('loss-of-function', 'NegReg', (11, 27)) ('Mutant', 'Var', (0, 6)) ('p53', 'Gene', (7, 10)) ('tumor', 'Disease', 'MESH:D009369', (101, 106)) 1133 23714463 Specific TP53 mutant genotype may influence age of onset and tumor spectrum. ('mutant', 'Var', (14, 20)) ('age', 'MPA', (44, 47)) ('tumor', 'Disease', 'MESH:D009369', (61, 66)) ('TP53', 'Gene', '7157', (9, 13)) ('influence', 'Reg', (34, 43)) ('TP53', 'Gene', (9, 13)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('tumor', 'Disease', (61, 66)) 1134 23714463 Birch and colleagues reported a significantly higher incidence and earlier age at cancer diagnosis for breast (p = 0.006) and brain cancers (p = 0.05) in families who carry missense mutations in the DBD. ('brain cancers', 'Disease', 'MESH:D001932', (126, 139)) ('cancer', 'Disease', (132, 138)) ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('brain cancers', 'Disease', (126, 139)) ('higher', 'PosReg', (46, 52)) ('breast', 'Disease', (103, 109)) ('cancer', 'Phenotype', 'HP:0002664', (132, 138)) ('cancer', 'Disease', (82, 88)) ('cancer', 'Disease', 'MESH:D009369', (82, 88)) ('cancer', 'Disease', 'MESH:D009369', (132, 138)) ('cancers', 'Phenotype', 'HP:0002664', (132, 139)) ('missense mutations', 'Var', (173, 191)) 1136 23714463 Furthermore, nonsense, frameshift, and splice mutations are associated with particularly early tumor onset. ('tumor', 'Disease', (95, 100)) ('nonsense', 'Var', (13, 21)) ('frameshift', 'Var', (23, 33)) ('tumor', 'Disease', 'MESH:D009369', (95, 100)) ('splice mutations', 'Var', (39, 55)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('associated', 'Reg', (60, 70)) 1137 23714463 However, these genotype:phenotype correlations are not consistent, as numerous families carrying the same mutation express widely divergent clinical manifestations of age of onset and cancer type. ('cancer', 'Disease', (184, 190)) ('cancer', 'Phenotype', 'HP:0002664', (184, 190)) ('cancer', 'Disease', 'MESH:D009369', (184, 190)) ('mutation', 'Var', (106, 114)) 1139 23714463 The sensitivity and specificity of the Chompret criteria are 82% and 58%, respectively, making it perhaps the most rigorous and relevant definition to justify TP53 mutation analysis. ('TP53', 'Gene', (159, 163)) ('mutation', 'Var', (164, 172)) ('TP53', 'Gene', '7157', (159, 163)) 1145 23714463 Almost 50% of children with CPC harbor germline TP53 mutations even in the absence of a typical LFS family history. ('children', 'Species', '9606', (14, 22)) ('TP53', 'Gene', '7157', (48, 52)) ('TP53', 'Gene', (48, 52)) ('mutations', 'Var', (53, 62)) ('CPC', 'Disease', (28, 31)) ('germline', 'Var', (39, 47)) 1147 23714463 Approximately 20% to 30% of tumors in TP53 mutation carriers do not belong to the classical LFS tumor spectrum: Wilms tumor and phyllodes tumors of the breast are strongly associated, pancreatic cancer moderately associated, and neuroblastoma weakly associated with TP53 mutation carrier status. ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('TP53', 'Gene', (38, 42)) ('LFS tumor', 'Disease', 'MESH:D016864', (92, 101)) ('associated', 'Interaction', (172, 182)) ('tumors', 'Disease', 'MESH:D009369', (138, 144)) ('TP53', 'Gene', (266, 270)) ('LFS tumor', 'Disease', (92, 101)) ('pancreatic cancer', 'Phenotype', 'HP:0002894', (184, 201)) ('mutation', 'Var', (43, 51)) ('tumors', 'Phenotype', 'HP:0002664', (28, 34)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('neuroblastoma', 'Disease', (229, 242)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (229, 242)) ('Wilms tumor', 'Disease', 'MESH:D009396', (112, 123)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) ('neuroblastoma', 'Disease', 'MESH:D009447', (229, 242)) ('TP53', 'Gene', '7157', (38, 42)) ('tumor', 'Phenotype', 'HP:0002664', (138, 143)) ('tumors', 'Disease', (28, 34)) ('TP53', 'Gene', '7157', (266, 270)) ('Wilms tumor', 'Phenotype', 'HP:0002667', (112, 123)) ('tumors', 'Phenotype', 'HP:0002664', (138, 144)) ('pancreatic cancer', 'Disease', 'MESH:D010190', (184, 201)) ('cancer', 'Phenotype', 'HP:0002664', (195, 201)) ('tumors', 'Disease', 'MESH:D009369', (28, 34)) ('pancreatic cancer', 'Disease', (184, 201)) ('tumors', 'Disease', (138, 144)) ('Wilms tumor', 'Disease', (112, 123)) 1148 23714463 Carcinomas of the lung and gastrointestinal tract, lymphomas, and other neoplasms have been shown to occur in TP53 mutation carriers or first-degree relatives of carriers at much earlier ages than seen in the general population. ('carriers', 'Reg', (124, 132)) ('lymphomas', 'Disease', (51, 60)) ('lymphomas', 'Disease', 'MESH:D008223', (51, 60)) ('TP53', 'Gene', '7157', (110, 114)) ('TP53', 'Gene', (110, 114)) ('Carcinomas of the lung and gastrointestinal tract', 'Disease', 'MESH:D004067', (0, 49)) ('neoplasms', 'Disease', 'MESH:D009369', (72, 81)) ('neoplasms', 'Disease', (72, 81)) ('lymphomas', 'Phenotype', 'HP:0002665', (51, 60)) ('mutation', 'Var', (115, 123)) ('Carcinomas', 'Phenotype', 'HP:0030731', (0, 10)) ('neoplasms', 'Phenotype', 'HP:0002664', (72, 81)) 1149 23714463 Approximately 1% of heritable breast cancers arise due to a germline TP53 mutation. ('mutation', 'Var', (74, 82)) ('breast cancers', 'Disease', 'MESH:D001943', (30, 44)) ('breast cancers', 'Disease', (30, 44)) ('breast cancer', 'Phenotype', 'HP:0003002', (30, 43)) ('TP53', 'Gene', '7157', (69, 73)) ('TP53', 'Gene', (69, 73)) ('cancers', 'Phenotype', 'HP:0002664', (37, 44)) ('cancer', 'Phenotype', 'HP:0002664', (37, 43)) ('arise due to', 'Reg', (45, 57)) ('breast cancers', 'Phenotype', 'HP:0003002', (30, 44)) ('germline', 'Var', (60, 68)) 1150 23714463 However, 7% of women who develop breast cancer under 30 years of age and have no first- or second-degree relatives with cancer carry a TP53 mutation; presence of first- or second-degree relatives with cancer raises this likelihood to well over 75%. ('breast cancer', 'Phenotype', 'HP:0003002', (33, 46)) ('cancer', 'Disease', 'MESH:D009369', (201, 207)) ('cancer', 'Phenotype', 'HP:0002664', (120, 126)) ('women', 'Species', '9606', (15, 20)) ('cancer', 'Disease', (201, 207)) ('cancer', 'Disease', 'MESH:D009369', (40, 46)) ('TP53', 'Gene', '7157', (135, 139)) ('cancer', 'Disease', (120, 126)) ('mutation', 'Var', (140, 148)) ('cancer', 'Disease', (40, 46)) ('cancer', 'Disease', 'MESH:D009369', (120, 126)) ('cancer', 'Phenotype', 'HP:0002664', (201, 207)) ('TP53', 'Gene', (135, 139)) ('breast cancer', 'Disease', 'MESH:D001943', (33, 46)) ('cancer', 'Phenotype', 'HP:0002664', (40, 46)) ('breast cancer', 'Disease', (33, 46)) 1153 23714463 In TP53 mutation carriers, the cumulative probability of a second cancer is 57% (+-10%) at 30 years. ('TP53', 'Gene', '7157', (3, 7)) ('TP53', 'Gene', (3, 7)) ('cancer', 'Phenotype', 'HP:0002664', (66, 72)) ('mutation', 'Var', (8, 16)) ('cancer', 'Disease', 'MESH:D009369', (66, 72)) ('cancer', 'Disease', (66, 72)) 1155 23714463 A unique R337H mutation exclusively found in LFS families from southeastern Brazil is a risk allele for pediatric ACC and, until recently, was thought to represent a unique example of a tissue-specific predisposing mutation. ('R337H', 'Var', (9, 14)) ('R337H', 'Mutation', 'rs121912664', (9, 14)) ('pediatric ACC', 'Disease', (104, 117)) 1156 23714463 Nonbiased ascertainment of families with the R337H mutation shows that the cancer risk encompasses the full spectrum of tumors associated with LFS, in particular early-onset breast cancer (mean age at diagnosis below 40 years) and CPC. ('breast cancer', 'Disease', 'MESH:D001943', (174, 187)) ('tumors', 'Disease', (120, 126)) ('tumors', 'Disease', 'MESH:D009369', (120, 126)) ('tumors', 'Phenotype', 'HP:0002664', (120, 126)) ('cancer', 'Disease', 'MESH:D009369', (75, 81)) ('breast cancer', 'Disease', (174, 187)) ('cancer', 'Phenotype', 'HP:0002664', (181, 187)) ('CPC', 'Disease', (231, 234)) ('breast cancer', 'Phenotype', 'HP:0003002', (174, 187)) ('cancer', 'Disease', (75, 81)) ('R337H', 'Mutation', 'rs121912664', (45, 50)) ('R337H', 'Var', (45, 50)) ('cancer', 'Disease', 'MESH:D009369', (181, 187)) ('tumor', 'Phenotype', 'HP:0002664', (120, 125)) ('men', 'Species', '9606', (19, 22)) ('cancer', 'Phenotype', 'HP:0002664', (75, 81)) ('cancer', 'Disease', (181, 187)) 1157 23714463 Additionally, current data on overall cancer penetrance suggest that the age-related cancer risk is somewhat lower than in LFS associated with other TP53 mutations, with tumors detected in approximately 25% of carriers at the age of 30 and a lifetime risk of approximately 80%. ('cancer', 'Disease', (38, 44)) ('lower', 'NegReg', (109, 114)) ('cancer', 'Phenotype', 'HP:0002664', (38, 44)) ('tumor', 'Phenotype', 'HP:0002664', (170, 175)) ('cancer', 'Disease', 'MESH:D009369', (85, 91)) ('TP53', 'Gene', '7157', (149, 153)) ('cancer', 'Disease', (85, 91)) ('tumors', 'Disease', 'MESH:D009369', (170, 176)) ('cancer', 'Disease', 'MESH:D009369', (38, 44)) ('TP53', 'Gene', (149, 153)) ('tumors', 'Phenotype', 'HP:0002664', (170, 176)) ('cancer', 'Phenotype', 'HP:0002664', (85, 91)) ('mutations', 'Var', (154, 163)) ('tumors', 'Disease', (170, 176)) 1159 23714463 The PIN3 (16 bp duplication in intron 3) polymorphism has been associated with an increase in age of onset of tumors in TP53 mutation carriers. ('polymorphism', 'Var', (41, 53)) ('PIN3', 'Gene', (4, 8)) ('mutation', 'Var', (125, 133)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('tumors', 'Disease', (110, 116)) ('tumors', 'Disease', 'MESH:D009369', (110, 116)) ('increase', 'PosReg', (82, 90)) ('tumors', 'Phenotype', 'HP:0002664', (110, 116)) ('TP53', 'Gene', '7157', (120, 124)) ('TP53', 'Gene', (120, 124)) 1160 23714463 A single nucleotide polymorphism (SNP) at codon 72 in exon 4 involves the substitution of an arginine for a proline base. ('arginine', 'MPA', (93, 101)) ('proline', 'Chemical', 'MESH:D011392', (108, 115)) ('arginine', 'Chemical', 'MESH:D001120', (93, 101)) ('substitution', 'Var', (74, 86)) 1161 23714463 The current consensus from a large number of studies is that R72 is more effective in inducing apoptosis than P72. ('P72', 'Gene', '10521', (110, 113)) ('R72', 'Var', (61, 64)) ('apoptosis', 'CPA', (95, 104)) ('inducing', 'Reg', (86, 94)) ('P72', 'Gene', (110, 113)) 1162 23714463 On the other hand, the SNP309, rs2279744 T/G polymorphic substitution in the MDM2 gene appears to confer an earlier age of onset in LFS patients. ('rs2279744', 'Mutation', 'rs2279744', (31, 40)) ('MDM2', 'Gene', '4193', (77, 81)) ('MDM2', 'Gene', (77, 81)) ('patients', 'Species', '9606', (136, 144)) ('SNP309', 'Var', (23, 29)) ('LFS', 'Disease', (132, 135)) 1164 23714463 Interestingly, telomeres in peripheral blood leukocytes of TP53 mutation carriers are shorter than in normal individuals of corresponding age. ('mutation', 'Var', (64, 72)) ('TP53', 'Gene', (59, 63)) ('shorter', 'NegReg', (86, 93)) ('telomeres', 'CPA', (15, 24)) ('TP53', 'Gene', '7157', (59, 63)) 1166 23714463 The accelerated telomere attrition in TP53 mutation carriers is postulated to lead to greater genomic instability and earlier age of cancer onset in successive generations. ('mutation', 'Var', (43, 51)) ('telomere', 'MPA', (16, 24)) ('greater', 'PosReg', (86, 93)) ('genomic instability', 'CPA', (94, 113)) ('TP53', 'Gene', (38, 42)) ('cancer', 'Disease', 'MESH:D009369', (133, 139)) ('cancer', 'Disease', (133, 139)) ('accelerated', 'PosReg', (4, 15)) ('cancer', 'Phenotype', 'HP:0002664', (133, 139)) ('TP53', 'Gene', '7157', (38, 42)) 1167 23714463 Global copy number variation frequency and total structural variation are significantly increased in individuals with germline TP53 mutations (p = 0.01). ('mutations', 'Var', (132, 141)) ('increased', 'PosReg', (88, 97)) ('structural variation', 'MPA', (49, 69)) ('germline', 'Var', (118, 126)) ('TP53', 'Gene', '7157', (127, 131)) ('Global copy number variation frequency', 'MPA', (0, 38)) ('TP53', 'Gene', (127, 131)) 1169 23714463 These findings, together with the accelerated telomere attrition data, support the notion that TP53 mutation carriers have inherently unstable genomes and harbor other genetic and genomic alterations that can directly modify the age phenotype. ('mutation', 'Var', (100, 108)) ('TP53', 'Gene', '7157', (95, 99)) ('TP53', 'Gene', (95, 99)) ('modify', 'Reg', (218, 224)) 1170 23714463 Recent evidence suggests that the "early" germline presence of TP53 mutations in a cell may induce early critical telomere length shortening, which in turn may be involved in chromothripsis:an event of catastrophic chromosome rearrangement that is frequently seen in LFS-associated tumors. ('involved', 'Reg', (163, 171)) ('telomere length shortening', 'Phenotype', 'HP:0031413', (114, 140)) ('TP53', 'Gene', '7157', (63, 67)) ('LFS-associated', 'Disease', (267, 281)) ('TP53', 'Gene', (63, 67)) ('tumor', 'Phenotype', 'HP:0002664', (282, 287)) ('tumors', 'Disease', (282, 288)) ('tumors', 'Disease', 'MESH:D009369', (282, 288)) ('tumors', 'Phenotype', 'HP:0002664', (282, 288)) ('men', 'Species', '9606', (235, 238)) ('mutations', 'Var', (68, 77)) ('induce', 'Reg', (92, 98)) ('chromothripsis', 'Disease', (175, 189)) 1171 23714463 What the other genetic events are that modify the "driver" genotype conferred by the germline TP53 mutation are being actively explored and may ultimately lead to the development of more precise predictive algorithms of cancer phenotype and disease risk. ('cancer', 'Phenotype', 'HP:0002664', (220, 226)) ('algorithms of cancer', 'Disease', 'MESH:D009369', (206, 226)) ('TP53', 'Gene', '7157', (94, 98)) ('TP53', 'Gene', (94, 98)) ('lead', 'Reg', (155, 159)) ('mutation', 'Var', (99, 107)) ('algorithms of cancer', 'Disease', (206, 226)) ('men', 'Species', '9606', (174, 177)) 1173 23714463 For female TP53 mutation carriers, the role of prophylactic mastectomy has not been carefully evaluated. ('TP53', 'Gene', '7157', (11, 15)) ('TP53', 'Gene', (11, 15)) ('mutation', 'Var', (16, 24)) 1174 23714463 Ultimately, determining the exact nature of the TP53 mutation may be of prognostic significance and therefore important for the clinical management of these patients. ('TP53', 'Gene', '7157', (48, 52)) ('mutation', 'Var', (53, 61)) ('TP53', 'Gene', (48, 52)) ('patients', 'Species', '9606', (157, 165)) ('men', 'Species', '9606', (143, 146)) 1176 23714463 Although FDG-PET/CT can identify new primary cancers in TP53 mutation carriers, repeated radiation exposure may accelerate the risk of secondary malignancies. ('malignancies', 'Disease', (145, 157)) ('cancer', 'Phenotype', 'HP:0002664', (45, 51)) ('TP53', 'Gene', '7157', (56, 60)) ('mutation', 'Var', (61, 69)) ('TP53', 'Gene', (56, 60)) ('malignancies', 'Disease', 'MESH:D009369', (145, 157)) ('cancers', 'Disease', 'MESH:D009369', (45, 52)) ('cancers', 'Phenotype', 'HP:0002664', (45, 52)) ('cancers', 'Disease', (45, 52)) ('accelerate', 'PosReg', (112, 122)) 1179 23714463 Studies to improve the predictive value of genetic and genomic modifier effects on the mutant TP53-associated phenotype will inform development of more refined tumor screening protocols and lead to improved understanding of the biologic mechanisms of tumor formation in these patients. ('patients', 'Species', '9606', (276, 284)) ('tumor', 'Disease', (251, 256)) ('tumor', 'Disease', 'MESH:D009369', (160, 165)) ('TP53', 'Gene', '7157', (94, 98)) ('TP53', 'Gene', (94, 98)) ('mutant', 'Var', (87, 93)) ('men', 'Species', '9606', (139, 142)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('tumor', 'Disease', 'MESH:D009369', (251, 256)) ('tumor', 'Disease', (160, 165)) ('tumor', 'Phenotype', 'HP:0002664', (251, 256)) 1187 23714463 However, in the presence of an underlying germline SDHx mutation, the tumor rate may be extraordinarily high with a penetrance approaching 80%. ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('tumor', 'Disease', (70, 75)) ('germline', 'Var', (42, 50)) ('SDHx', 'Gene', (51, 55)) ('SDHx', 'Chemical', '-', (51, 55)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) 1191 23714463 Over the past several years, we have learned that germline mutations in each of these SDHx genes may lead to development of paragangliomas or pheochromocytomas. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (142, 158)) ('paragangliomas or pheochromocytomas', 'Disease', (124, 159)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (142, 159)) ('germline mutations', 'Var', (50, 68)) ('gliomas', 'Phenotype', 'HP:0009733', (131, 138)) ('paragangliomas or pheochromocytomas', 'Disease', 'MESH:D010673', (124, 159)) ('paraganglioma', 'Phenotype', 'HP:0002668', (124, 137)) ('paragangliomas', 'Phenotype', 'HP:0002668', (124, 138)) ('SDHx', 'Gene', (86, 90)) ('men', 'Species', '9606', (116, 119)) ('SDHx', 'Chemical', '-', (86, 90)) ('lead to', 'Reg', (101, 108)) 1194 23714463 Germline mutations in other genes such as NF1, VHL, RET, TMEM127, and MAX also have been associated with the development of paragangliomas and pheochromocytomas. ('Germline mutations', 'Var', (0, 18)) ('associated with', 'Reg', (89, 104)) ('paragangliomas and pheochromocytomas', 'Disease', 'MESH:D010673', (124, 160)) ('VHL', 'Disease', 'MESH:D006623', (47, 50)) ('VHL', 'Disease', (47, 50)) ('gliomas', 'Phenotype', 'HP:0009733', (131, 138)) ('RET', 'Gene', '5979', (52, 55)) ('paraganglioma', 'Phenotype', 'HP:0002668', (124, 137)) ('MAX', 'Gene', (70, 73)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (143, 160)) ('TMEM127', 'Gene', (57, 64)) ('paragangliomas', 'Phenotype', 'HP:0002668', (124, 138)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (143, 159)) ('TMEM127', 'Gene', '55654', (57, 64)) ('RET', 'Gene', (52, 55)) ('NF1', 'Gene', '4763', (42, 45)) ('men', 'Species', '9606', (116, 119)) ('NF1', 'Gene', (42, 45)) 1195 23714463 Based on gene expression and pathway analysis, these tumors can be divided into two clusters corresponding to their underlying gene mutations: Cluster 1 (Cluster 1A: SDHx, Cluster 1B: VHL), associated with pseudohypoxia and aberrant VEGF signaling, and Cluster 2 (RET/NF1/TMEM127/MAX), associated with aberrant kinase signaling pathways. ('TMEM127', 'Gene', (272, 279)) ('RET', 'Gene', '5979', (264, 267)) ('tumors', 'Phenotype', 'HP:0002664', (53, 59)) ('associated', 'Reg', (190, 200)) ('pseudohypoxia', 'Disease', (206, 219)) ('pseudohypoxia', 'Disease', 'None', (206, 219)) ('NF1', 'Gene', '4763', (268, 271)) ('TMEM127', 'Gene', '55654', (272, 279)) ('VEGF', 'Gene', '7422', (233, 237)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('RET', 'Gene', (264, 267)) ('VEGF', 'Gene', (233, 237)) ('VHL', 'Disease', (184, 187)) ('tumors', 'Disease', (53, 59)) ('NF1', 'Gene', (268, 271)) ('kinase signaling pathways', 'Pathway', (311, 336)) ('tumors', 'Disease', 'MESH:D009369', (53, 59)) ('mutations', 'Var', (132, 141)) ('SDHx', 'Chemical', '-', (166, 170)) ('VHL', 'Disease', 'MESH:D006623', (184, 187)) 1196 23714463 In the absence of SDHx mutations, paragangliomas (and sometimes pheochromocytomas) are benign and very slow growing tumors. ('SDHx', 'Chemical', '-', (18, 22)) ('paragangliomas', 'Disease', (34, 48)) ('very slow growing tumors', 'Disease', 'MESH:D000326', (98, 122)) ('paragangliomas', 'Disease', 'MESH:D010235', (34, 48)) ('paragangliomas', 'Phenotype', 'HP:0002668', (34, 48)) ('paraganglioma', 'Phenotype', 'HP:0002668', (34, 47)) ('gliomas', 'Phenotype', 'HP:0009733', (41, 48)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (64, 81)) ('mutations', 'Var', (23, 32)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (64, 80)) ('SDHx', 'Gene', (18, 22)) ('tumors', 'Phenotype', 'HP:0002664', (116, 122)) ('pheochromocytomas', 'Disease', (64, 81)) ('very slow growing tumors', 'Disease', (98, 122)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (64, 81)) 1198 23714463 However, when such tumors occur because of germline mutations in SDHx genes, paragangliomas and pheochromocytomas can transform to become highly aggressive and metastatic. ('tumors', 'Disease', (19, 25)) ('tumors', 'Disease', 'MESH:D009369', (19, 25)) ('paraganglioma', 'Phenotype', 'HP:0002668', (77, 90)) ('germline mutations', 'Var', (43, 61)) ('paragangliomas and pheochromocytomas', 'Disease', 'MESH:D010673', (77, 113)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('metastatic', 'CPA', (160, 170)) ('gliomas', 'Phenotype', 'HP:0009733', (84, 91)) ('SDHx', 'Chemical', '-', (65, 69)) ('SDHx', 'Gene', (65, 69)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('paragangliomas', 'Phenotype', 'HP:0002668', (77, 91)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (96, 112)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (96, 113)) 1200 23714463 A recent study from the National Institutes of Health demonstrated that nearly 30% of nonmetastatic paragangliomas and pheochromocytomas are due to germline SDHx mutations, and that 44% of adults and 81% of children with metastatic disease are due to germline SDHx mutations. ('mutations', 'Var', (162, 171)) ('gliomas', 'Phenotype', 'HP:0009733', (107, 114)) ('children', 'Species', '9606', (207, 215)) ('SDHx', 'Chemical', '-', (260, 264)) ('SDHx', 'Chemical', '-', (157, 161)) ('SDHx', 'Gene', (157, 161)) ('paragangliomas', 'Phenotype', 'HP:0002668', (100, 114)) ('paraganglioma', 'Phenotype', 'HP:0002668', (100, 113)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (119, 135)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (119, 136)) ('paragangliomas and pheochromocytomas', 'Disease', 'MESH:D010673', (100, 136)) ('due', 'Reg', (141, 144)) 1201 23714463 In fact, this study did not test for all of the known SDHx genes, so the actual prevalence of germline SDHx mutations in this disease may be higher. ('SDHx', 'Chemical', '-', (54, 58)) ('SDHx', 'Chemical', '-', (103, 107)) ('SDHx', 'Gene', (103, 107)) ('mutations', 'Var', (108, 117)) 1203 23714463 Each SDHx gene mutation leads to a slightly different disease phenotype and clinical presentation (see Table 2). ('mutation', 'Var', (15, 23)) ('SDHx', 'Chemical', '-', (5, 9)) ('SDHx', 'Gene', (5, 9)) 1204 23714463 Interestingly, PGL-1 disease related to germline SDHD mutations is inherited in a maternally imprinted fashion with only the children of fathers: but not mothers: developing disease. ('children', 'Species', '9606', (125, 133)) ('mutations', 'Var', (54, 63)) ('PGL-1 disease', 'Disease', (15, 28)) ('SDHD', 'Gene', '6392', (49, 53)) ('PGL-1 disease', 'Disease', 'MESH:D010235', (15, 28)) ('SDHD', 'Gene', (49, 53)) 1206 23714463 This is also true for germline SDHAF2 mutations (PGL-2), which are also inherited as a maternally imprinted disease. ('SDHAF2', 'Gene', '54949', (31, 37)) ('SDHAF2', 'Gene', (31, 37)) ('PGL-2', 'Gene', '54949', (49, 54)) ('mutations', 'Var', (38, 47)) ('PGL-2', 'Gene', (49, 54)) 1207 23714463 Disease caused by germline SDHB mutations (PGL-4) seems to be the most common and malignant of the clinical phenotypes in "Familial Paraganglioma and Pheochromocytoma Syndrome." ('PGL-4', 'Gene', '6390', (43, 48)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (132, 145)) ('caused', 'Reg', (8, 14)) ('Familial Paraganglioma', 'Disease', 'MESH:D010235', (123, 145)) ('Familial Paraganglioma', 'Disease', (123, 145)) ('Pheochromocytoma Syndrome', 'Disease', (150, 175)) ('mutations', 'Var', (32, 41)) ('PGL-4', 'Gene', (43, 48)) ('SDHB', 'Gene', '6390', (27, 31)) ('Pheochromocytoma Syndrome', 'Disease', 'MESH:D010673', (150, 175)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (150, 166)) ('SDHB', 'Gene', (27, 31)) 1208 23714463 Every germline SDHx mutation (except SDHAF2) has been associated with GISTs. ('SDHx', 'Chemical', '-', (15, 19)) ('SDHx', 'Gene', (15, 19)) ('GISTs', 'Phenotype', 'HP:0100723', (70, 75)) ('mutation', 'Var', (20, 28)) ('GISTs', 'Disease', (70, 75)) ('SDHAF2', 'Gene', '54949', (37, 43)) ('SDHAF2', 'Gene', (37, 43)) ('associated', 'Reg', (54, 64)) 1210 23714463 Previously, clinical testing for the specific inherited SDHx mutations was based on disease presentation. ('SDHx', 'Gene', (56, 60)) ('mutations', 'Var', (61, 70)) ('SDHx', 'Chemical', '-', (56, 60)) 1211 23714463 For instance, a patient with metastatic paraganglioma that secretes catecholamine would first be tested for SDHB mutations, whereas a young patient with just familial head and neck paragangliomas might first be screened for SDHD or SDHC mutations. ('tested', 'Reg', (97, 103)) ('mutations', 'Var', (113, 122)) ('SDHD', 'Gene', (224, 228)) ('SDHB', 'Gene', '6390', (108, 112)) ('patient', 'Species', '9606', (16, 23)) ('paraganglioma', 'Phenotype', 'HP:0002668', (40, 53)) ('paragangliomas', 'Disease', 'MESH:D010235', (181, 195)) ('SDHC', 'Gene', '6391', (232, 236)) ('paragangliomas', 'Phenotype', 'HP:0002668', (181, 195)) ('paraganglioma', 'Phenotype', 'HP:0002668', (181, 194)) ('secretes catecholamine', 'MPA', (59, 81)) ('gliomas', 'Phenotype', 'HP:0009733', (188, 195)) ('SDHB', 'Gene', (108, 112)) ('catecholamine', 'Chemical', 'MESH:D002395', (68, 81)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (176, 195)) ('just familial head', 'Phenotype', 'HP:0001357', (153, 171)) ('SDHC', 'Gene', (232, 236)) ('paragangliomas', 'Disease', (181, 195)) ('paraganglioma', 'Disease', (40, 53)) ('paraganglioma', 'Disease', (181, 194)) ('patient', 'Species', '9606', (140, 147)) ('paraganglioma', 'Disease', 'MESH:D010235', (40, 53)) ('SDHD', 'Gene', '6392', (224, 228)) ('paraganglioma', 'Disease', 'MESH:D010235', (181, 194)) 1212 23714463 In order to identify patients at risk for underlying germline SDHx mutations, it was observed several years ago that tumor tissues could be stained by immunohistochemistry (IHC) for the SDHB protein. ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('SDHB', 'Gene', (186, 190)) ('tumor', 'Disease', (117, 122)) ('mutations', 'Var', (67, 76)) ('patients', 'Species', '9606', (21, 29)) ('SDHx', 'Gene', (62, 66)) ('SDHx', 'Chemical', '-', (62, 66)) ('tumor', 'Disease', 'MESH:D009369', (117, 122)) ('SDHB', 'Gene', '6390', (186, 190)) 1219 23714463 Like LFS, we have learned that scheduled surveillance can detect early tumors in patients with underlying germline SDHx mutations. ('SDHx', 'Chemical', '-', (115, 119)) ('patients', 'Species', '9606', (81, 89)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('mutations', 'Var', (120, 129)) ('tumors', 'Disease', (71, 77)) ('SDHx', 'Gene', (115, 119)) ('tumors', 'Disease', 'MESH:D009369', (71, 77)) 1225 23714463 Fractionated metanephrines are nearly always abnormal in individuals with a hereditary syndrome characterized by secreting tumors (elevated metanephrines for RET and NF1 mutations and elevated normetanephrines for SDHx and VHL mutations). ('tumors', 'Disease', 'MESH:D009369', (123, 129)) ('SDHx', 'Chemical', '-', (214, 218)) ('hereditary syndrome', 'Disease', (76, 95)) ('NF1', 'Gene', '4763', (166, 169)) ('normetanephrines', 'Chemical', 'MESH:D009647', (193, 209)) ('VHL', 'Disease', 'MESH:D006623', (223, 226)) ('hereditary syndrome', 'Disease', 'MESH:D009386', (76, 95)) ('RET', 'Gene', '5979', (158, 161)) ('NF1', 'Gene', (166, 169)) ('elevated', 'PosReg', (131, 139)) ('metanephrines', 'MPA', (140, 153)) ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('RET', 'Gene', (158, 161)) ('elevated', 'PosReg', (184, 192)) ('VHL', 'Disease', (223, 226)) ('normetanephrines', 'MPA', (193, 209)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('metanephrines', 'Chemical', 'MESH:D008676', (140, 153)) ('tumors', 'Disease', (123, 129)) ('metanephrines', 'Chemical', 'MESH:D008676', (13, 26)) ('SDHx', 'Gene', (214, 218)) ('mutations', 'Var', (170, 179)) ('metanephrines', 'Chemical', 'MESH:D008676', (196, 209)) 1230 23714463 At the University of Utah, a recent prospective observational study of whole body, rapid sequence MRI in SDHx mutation carriers demonstrated MRI sensitivity of 88% and specificity of 95% to detect new tumors compared to biochemical testing sensitivity of 38% and specificity of 95% (K. Jasperson, personal communication, submitted). ('SDHx', 'Chemical', '-', (105, 109)) ('SDHx', 'Gene', (105, 109)) ('tumor', 'Phenotype', 'HP:0002664', (201, 206)) ('mutation', 'Var', (110, 118)) ('tumors', 'Disease', 'MESH:D009369', (201, 207)) ('tumors', 'Disease', (201, 207)) ('tumors', 'Phenotype', 'HP:0002664', (201, 207)) 1231 23714463 The University of Utah now recommends whole body MRI (5-mm slices from skull base to pelvis) at least every two years for patients with underlying SDHx mutations, followed by PET scans for patients with abnormal MRI results. ('mutations', 'Var', (152, 161)) ('SDHx', 'Gene', (147, 151)) ('men', 'Species', '9606', (32, 35)) ('SDHx', 'Chemical', '-', (147, 151)) ('patients', 'Species', '9606', (122, 130)) ('patients', 'Species', '9606', (189, 197)) 1232 23714463 As testing for SDHx mutations has become more widespread, we have learned more about the spectrum of other SDH-related tumors, including GISTs, renal tumors (RCC, oncocytoma), papillary thyroid cancer, pituitary tumors, and even neuroblastoma. ('SDHx', 'Chemical', '-', (15, 19)) ('tumors', 'Phenotype', 'HP:0002664', (150, 156)) ('tumors', 'Phenotype', 'HP:0002664', (119, 125)) ('renal tumors', 'Phenotype', 'HP:0009726', (144, 156)) ('GISTs', 'Phenotype', 'HP:0100723', (137, 142)) ('oncocytoma', 'Disease', 'MESH:D018249', (163, 173)) ('tumor', 'Phenotype', 'HP:0002664', (150, 155)) ('tumor', 'Phenotype', 'HP:0002664', (212, 217)) ('papillary thyroid cancer', 'Disease', (176, 200)) ('SDH', 'Gene', (107, 110)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('tumors', 'Disease', (150, 156)) ('tumors', 'Disease', (119, 125)) ('tumors', 'Phenotype', 'HP:0002664', (212, 218)) ('GISTs', 'Disease', (137, 142)) ('neuroblastoma', 'Disease', (229, 242)) ('SDH', 'Gene', '6390', (15, 18)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (229, 242)) ('pituitary tumors', 'Disease', 'MESH:D010911', (202, 218)) ('neuroblastoma', 'Disease', 'MESH:D009447', (229, 242)) ('tumors', 'Disease', 'MESH:D009369', (150, 156)) ('oncocytoma', 'Disease', (163, 173)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (176, 200)) ('tumors', 'Disease', 'MESH:D009369', (119, 125)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (186, 200)) ('tumors', 'Disease', (212, 218)) ('RCC', 'Disease', (158, 161)) ('RCC', 'Phenotype', 'HP:0005584', (158, 161)) ('renal tumors', 'Disease', (144, 156)) ('papillary thyroid cancer', 'Disease', 'MESH:D000077273', (176, 200)) ('mutations', 'Var', (20, 29)) ('SDH', 'Gene', (15, 18)) ('SDH', 'Gene', '6390', (107, 110)) ('tumors', 'Disease', 'MESH:D009369', (212, 218)) ('pituitary tumors', 'Disease', (202, 218)) ('cancer', 'Phenotype', 'HP:0002664', (194, 200)) ('RCC', 'Disease', 'MESH:C538614', (158, 161)) ('renal tumors', 'Disease', 'MESH:D007674', (144, 156)) 1233 23714463 In fact, wild-type GISTs lacking somatic KIT or PDFRA mutations have been shown to be 100% SDH-deficient as measured by SDHB IHC. ('SDH-deficient', 'Disease', 'MESH:D007153', (91, 104)) ('mutations', 'Var', (54, 63)) ('SDHB', 'Gene', '6390', (120, 124)) ('PDFRA', 'Gene', (48, 53)) ('GISTs', 'Phenotype', 'HP:0100723', (19, 24)) ('SDHB', 'Gene', (120, 124)) ('SDH-deficient', 'Disease', (91, 104)) 1236 23714463 Many recent reports have demonstrated germline SDHA mutations associated with SDH-deficient (wild-type KIT/PDFRA) GISTs, which can be detected by SDHA IHC. ('mutations', 'Var', (52, 61)) ('SDH-deficient', 'Disease', 'MESH:D007153', (78, 91)) ('SDH', 'Gene', (78, 81)) ('associated', 'Reg', (62, 72)) ('SDH', 'Gene', (47, 50)) ('SDH', 'Gene', '6390', (146, 149)) ('GISTs', 'Phenotype', 'HP:0100723', (114, 119)) ('SDH', 'Gene', '6390', (47, 50)) ('SDH', 'Gene', '6390', (78, 81)) ('SDH-deficient', 'Disease', (78, 91)) ('SDH', 'Gene', (146, 149)) 1237 23714463 Germline SDHx mutations still account for less than half of SDH-deficient GISTs, and the search for underlying SDH-related genes continues for the majority of patients with SDH-deficient GISTs. ('SDH', 'Gene', (60, 63)) ('mutations', 'Var', (14, 23)) ('GISTs', 'Phenotype', 'HP:0100723', (187, 192)) ('SDH-deficient', 'Disease', 'MESH:D007153', (173, 186)) ('SDH', 'Gene', '6390', (111, 114)) ('SDH', 'Gene', '6390', (173, 176)) ('SDH', 'Gene', '6390', (9, 12)) ('SDH-deficient', 'Disease', (173, 186)) ('SDH-deficient', 'Disease', 'MESH:D007153', (60, 73)) ('SDH', 'Gene', '6390', (60, 63)) ('SDH-deficient', 'Disease', (60, 73)) ('SDH', 'Gene', (173, 176)) ('GISTs', 'Phenotype', 'HP:0100723', (74, 79)) ('patients', 'Species', '9606', (159, 167)) ('SDH', 'Gene', (111, 114)) ('SDH', 'Gene', (9, 12)) ('SDHx', 'Chemical', '-', (9, 13)) 1238 23714463 It is now recommended that patients with SDH-deficient GISTs be referred for genetic evaluation for underlying SDHx mutations. ('SDH-deficient', 'Disease', (41, 54)) ('SDH-deficient', 'Disease', 'MESH:D007153', (41, 54)) ('men', 'Species', '9606', (15, 18)) ('GISTs', 'Phenotype', 'HP:0100723', (55, 60)) ('patients', 'Species', '9606', (27, 35)) ('mutations', 'Var', (116, 125)) ('SDHx', 'Gene', (111, 115)) ('SDHx', 'Chemical', '-', (111, 115)) 1239 23714463 If germline SDHx mutations are identified in patients with GISTs, they should be considered for biochemical and imaging surveillance due to risk for other tumors. ('SDHx', 'Gene', (12, 16)) ('GISTs', 'Phenotype', 'HP:0100723', (59, 64)) ('SDHx', 'Chemical', '-', (12, 16)) ('tumor', 'Phenotype', 'HP:0002664', (155, 160)) ('tumors', 'Phenotype', 'HP:0002664', (155, 161)) ('tumors', 'Disease', 'MESH:D009369', (155, 161)) ('tumors', 'Disease', (155, 161)) ('patients', 'Species', '9606', (45, 53)) ('mutations', 'Var', (17, 26)) 1240 23714463 As familial tumors due to inherited SDHx mutations become better recognized, we will begin to learn more about the genetic, epigenetic, and metabolic alterations related to cancer risk. ('mutations', 'Var', (41, 50)) ('SDHx', 'Gene', (36, 40)) ('cancer', 'Disease', 'MESH:D009369', (173, 179)) ('SDHx', 'Chemical', '-', (36, 40)) ('cancer', 'Disease', (173, 179)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('familial tumors', 'Disease', 'MESH:D009386', (3, 18)) ('cancer', 'Phenotype', 'HP:0002664', (173, 179)) ('tumors', 'Phenotype', 'HP:0002664', (12, 18)) ('familial tumors', 'Disease', (3, 18)) 1248 23714463 BAP1 encodes a catalyzing enzyme that removes ubiquitin from protein substrates, and germline BAP1 mutations cause a novel cancer syndrome characterized by high incidence of benign atypical melanocytic tumors, uveal melanoma, cutaneous melanoma, malignant mesothelioma, and potentially other cancers. ('cancer', 'Phenotype', 'HP:0002664', (123, 129)) ('malignant mesothelioma', 'Phenotype', 'HP:0100001', (246, 268)) ('benign atypical melanocytic tumors', 'Disease', 'MESH:D009508', (174, 208)) ('uveal melanoma', 'Disease', 'MESH:C536494', (210, 224)) ('BAP1', 'Gene', (0, 4)) ('uveal melanoma', 'Disease', (210, 224)) ('BAP1', 'Gene', '8314', (94, 98)) ('malignant mesothelioma', 'Disease', (246, 268)) ('cancers', 'Phenotype', 'HP:0002664', (292, 299)) ('cancers', 'Disease', (292, 299)) ('cutaneous melanoma', 'Disease', (226, 244)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (226, 244)) ('cutaneous melanoma', 'Disease', 'MESH:C562393', (226, 244)) ('malignant mesothelioma', 'Disease', 'MESH:C562839', (246, 268)) ('cancer', 'Phenotype', 'HP:0002664', (292, 298)) ('tumors', 'Phenotype', 'HP:0002664', (202, 208)) ('benign atypical melanocytic tumors', 'Disease', (174, 208)) ('uveal melanoma', 'Phenotype', 'HP:0007716', (210, 224)) ('cause', 'Reg', (109, 114)) ('melanoma', 'Phenotype', 'HP:0002861', (236, 244)) ('cancer syndrome', 'Disease', 'MESH:D009369', (123, 138)) ('BAP1', 'Gene', (94, 98)) ('tumor', 'Phenotype', 'HP:0002664', (202, 207)) ('mutations', 'Var', (99, 108)) ('cancers', 'Disease', 'MESH:D009369', (292, 299)) ('melanoma', 'Phenotype', 'HP:0002861', (216, 224)) ('cancer syndrome', 'Disease', (123, 138)) ('BAP1', 'Gene', '8314', (0, 4)) 1249 23714463 BAP1 mutation carriers should have regular medical examinations in order to diagnose associated malignancies at an early, more treatable stage. ('malignancies', 'Disease', 'MESH:D009369', (96, 108)) ('BAP1', 'Gene', (0, 4)) ('malignancies', 'Disease', (96, 108)) ('BAP1', 'Gene', '8314', (0, 4)) ('mutation', 'Var', (5, 13)) 1250 23714463 TP53 mutations cause Li-Fraumeni syndrome with extremely high risk for sarcomas, breast cancer, brain tumors, adrenocortical carcinomas, and other tumors. ('breast cancer', 'Disease', (81, 94)) ('tumors', 'Disease', 'MESH:D009369', (147, 153)) ('brain tumors', 'Disease', 'MESH:D001932', (96, 108)) ('brain tumors', 'Phenotype', 'HP:0030692', (96, 108)) ('sarcomas', 'Disease', 'MESH:D012509', (71, 79)) ('cancer', 'Phenotype', 'HP:0002664', (88, 94)) ('sarcoma', 'Phenotype', 'HP:0100242', (71, 78)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('sarcomas', 'Phenotype', 'HP:0100242', (71, 79)) ('cause', 'Reg', (15, 20)) ('sarcomas', 'Disease', (71, 79)) ('Li-Fraumeni syndrome', 'Disease', (21, 41)) ('TP53', 'Gene', '7157', (0, 4)) ('tumors', 'Phenotype', 'HP:0002664', (102, 108)) ('brain tumors', 'Disease', (96, 108)) ('Li-Fraumeni syndrome', 'Disease', 'MESH:D016864', (21, 41)) ('carcinoma', 'Phenotype', 'HP:0030731', (125, 134)) ('carcinomas', 'Phenotype', 'HP:0030731', (125, 135)) ('tumors', 'Disease', (102, 108)) ('tumors', 'Phenotype', 'HP:0002664', (147, 153)) ('adrenocortical carcinomas', 'Phenotype', 'HP:0006744', (110, 135)) ('mutations', 'Var', (5, 14)) ('adrenocortical carcinomas', 'Disease', (110, 135)) ('tumor', 'Phenotype', 'HP:0002664', (147, 152)) ('TP53', 'Gene', (0, 4)) ('tumors', 'Disease', 'MESH:D009369', (102, 108)) ('tumors', 'Disease', (147, 153)) ('breast cancer', 'Phenotype', 'HP:0003002', (81, 94)) ('adrenocortical carcinomas', 'Disease', 'MESH:D018268', (110, 135)) ('breast cancer', 'Disease', 'MESH:D001943', (81, 94)) 1252 23714463 SDH is a mitochondrial enzyme complex involved in the tricarboxylic acid cycle, and SDHx mutations (SDHA, SDHB, SDHC, SDHD, and SDHAF2) lead to increased succinate and high risk for paragangliomas, pheochromocytomas, renal cell carcinoma (RCC), gastrointestinal stromal tumors (GISTs), and other tumors. ('renal cell carcinoma', 'Disease', 'MESH:C538614', (217, 237)) ('SDH', 'Gene', '6390', (128, 131)) ('GISTs', 'Phenotype', 'HP:0100723', (278, 283)) ('succinate', 'MPA', (154, 163)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (198, 214)) ('tumors', 'Disease', 'MESH:D009369', (296, 302)) ('mutations', 'Var', (89, 98)) ('tumor', 'Phenotype', 'HP:0002664', (270, 275)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (198, 215)) ('SDH', 'Gene', '6390', (112, 115)) ('pheochromocytomas', 'Disease', (198, 215)) ('SDH', 'Gene', '6390', (0, 3)) ('tumors', 'Disease', (270, 276)) ('paragangliomas', 'Disease', 'MESH:D010235', (182, 196)) ('SDHx', 'Chemical', '-', (84, 88)) ('SDH', 'Gene', (106, 109)) ('SDHC', 'Gene', '6391', (112, 116)) ('paraganglioma', 'Phenotype', 'HP:0002668', (182, 195)) ('SDHAF2', 'Gene', (128, 134)) ('SDH', 'Gene', '6390', (118, 121)) ('paragangliomas', 'Phenotype', 'HP:0002668', (182, 196)) ('SDHAF2', 'Gene', '54949', (128, 134)) ('SDH', 'Gene', (128, 131)) ('renal cell carcinoma', 'Disease', (217, 237)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (217, 237)) ('tumors', 'Disease', 'MESH:D009369', (270, 276)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (245, 276)) ('SDH', 'Gene', (112, 115)) ('SDH', 'Gene', '6390', (100, 103)) ('gliomas', 'Phenotype', 'HP:0009733', (189, 196)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (245, 276)) ('SDHD', 'Gene', '6392', (118, 122)) ('SDH', 'Gene', (0, 3)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (54, 72)) ('tumors', 'Phenotype', 'HP:0002664', (296, 302)) ('carcinoma', 'Phenotype', 'HP:0030731', (228, 237)) ('SDHB', 'Gene', '6390', (106, 110)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (198, 215)) ('RCC', 'Disease', (239, 242)) ('RCC', 'Phenotype', 'HP:0005584', (239, 242)) ('increased succinate', 'Phenotype', 'HP:0020149', (144, 163)) ('SDH', 'Gene', '6390', (84, 87)) ('SDH', 'Gene', (118, 121)) ('SDHC', 'Gene', (112, 116)) ('increased', 'PosReg', (144, 153)) ('tumor', 'Phenotype', 'HP:0002664', (296, 301)) ('paragangliomas', 'Disease', (182, 196)) ('SDHD', 'Gene', (118, 122)) ('SDH', 'Gene', (100, 103)) ('gastrointestinal stromal tumors', 'Disease', (245, 276)) ('tumors', 'Disease', (296, 302)) ('RCC', 'Disease', 'MESH:C538614', (239, 242)) ('succinate', 'Chemical', 'MESH:D019802', (154, 163)) ('SDHB', 'Gene', (106, 110)) ('tumors', 'Phenotype', 'HP:0002664', (270, 276)) ('SDH', 'Gene', (84, 87)) ('SDH', 'Gene', '6390', (106, 109)) 1253 23714463 Regular biochemical screening and imaging in patients with germline SDHx mutations can detect early cancer to improve patient outcome. ('SDHx', 'Chemical', '-', (68, 72)) ('SDHx', 'Gene', (68, 72)) ('cancer', 'Phenotype', 'HP:0002664', (100, 106)) ('improve', 'PosReg', (110, 117)) ('patient', 'Species', '9606', (45, 52)) ('patients', 'Species', '9606', (45, 53)) ('cancer', 'Disease', (100, 106)) ('cancer', 'Disease', 'MESH:D009369', (100, 106)) ('patient', 'Species', '9606', (118, 125)) ('mutations', 'Var', (73, 82)) 1260 29515971 Using data from 10,355, primary tumor resection samples and 2,787 normal samples that we extracted from The Cancer Genome Atlas and Genotype-Tissue Expression project databases, we screened the variation of CYT across 32 different cancer types and 28 different normal tissue types. ('cancer', 'Disease', 'MESH:D009369', (231, 237)) ('Cancer', 'Phenotype', 'HP:0002664', (108, 114)) ('cancer', 'Disease', (231, 237)) ('tumor', 'Disease', 'MESH:D009369', (32, 37)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('cancer', 'Phenotype', 'HP:0002664', (231, 237)) ('Cancer Genome Atlas', 'Disease', (108, 127)) ('tumor', 'Disease', (32, 37)) ('screened', 'Reg', (181, 189)) ('variation', 'Var', (194, 203)) ('Cancer Genome Atlas', 'Disease', 'MESH:D009369', (108, 127)) ('CYT', 'Gene', (207, 210)) 1289 29515971 Using the Genomic Data Commons (GDC) Data Portal (The Cancer Genome Atlas, TCGA program3) and the GTEx web portal (Genotype-Tissue Expression project4), we extracted data from a total of 10,355 tumor resection samples and 2,935 normal samples and screened the variation of CYT across these 32 different cancer types and 28 different normal solid tissue types. ('CYT', 'Gene', (273, 276)) ('Cancer Genome Atlas', 'Disease', (54, 73)) ('cancer', 'Disease', (303, 309)) ('Cancer', 'Phenotype', 'HP:0002664', (54, 60)) ('variation', 'Var', (260, 269)) ('Cancer Genome Atlas', 'Disease', 'MESH:D009369', (54, 73)) ('tumor', 'Disease', 'MESH:D009369', (194, 199)) ('tumor', 'Phenotype', 'HP:0002664', (194, 199)) ('cancer', 'Phenotype', 'HP:0002664', (303, 309)) ('screened', 'Reg', (247, 255)) ('tumor', 'Disease', (194, 199)) ('cancer', 'Disease', 'MESH:D009369', (303, 309)) 1306 29515971 GZMA was stained with an anti-GZMA antibody produced in rabbit (HPA054134, 1:200 dilution, Sigma-Aldrich) and PRF1 using two different antibodies produced in rabbit (either HPA037940, 1:29 dilution, or CAB002436, 1:10 dilution, Sigma-Aldrich). ('rabbit', 'Species', '9986', (56, 62)) ('CAB002436', 'Var', (202, 211)) ('rabbit', 'Species', '9986', (158, 164)) ('GZMA', 'Gene', (30, 34)) ('GZMA', 'Gene', (0, 4)) ('GZMA', 'Gene', '3001', (30, 34)) ('GZMA', 'Gene', '3001', (0, 4)) 1323 29515971 Importantly, we show for the first time that DLBCL and testicular cancer also rank among the top cytolytic active tumors, with DLBCL exhibiting even higher cytolytic levels compared to KIRC (>100 TPM). ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('cancer', 'Phenotype', 'HP:0002664', (66, 72)) ('testicular cancer', 'Phenotype', 'HP:0010788', (55, 72)) ('testicular cancer', 'Disease', (55, 72)) ('tumors', 'Disease', (114, 120)) ('tumors', 'Disease', 'MESH:D009369', (114, 120)) ('tumors', 'Phenotype', 'HP:0002664', (114, 120)) ('DLBCL', 'Disease', (45, 50)) ('cytolytic levels', 'MPA', (156, 172)) ('higher', 'PosReg', (149, 155)) ('DLBCL', 'Var', (127, 132)) ('testicular cancer', 'Disease', 'MESH:D013736', (55, 72)) 1348 29515971 We next performed Kaplan-Meier survival analysis on 37 TCGA-datasets deriving from 25 different cancer types in order to estimate the risk of individual and/or simultaneous high (or low) PRF1 and GZMA expression on patient overall survival. ('high', 'Var', (173, 177)) ('cancer', 'Phenotype', 'HP:0002664', (96, 102)) ('low', 'NegReg', (182, 185)) ('GZMA', 'Gene', (196, 200)) ('PRF1', 'Gene', (187, 191)) ('GZMA', 'Gene', '3001', (196, 200)) ('cancer', 'Disease', 'MESH:D009369', (96, 102)) ('cancer', 'Disease', (96, 102)) ('patient', 'Species', '9606', (215, 222)) 1349 29515971 In TCGA-ACC, non-metastatic cutaneous melanoma ("m0" TCGA-SKCM), and bladder urothelial carcinoma (TCGA-BLCA but not the GSE32894 dataset), both individual and simultaneous high levels of PRF1 and GZMA were significantly associated with better prognosis. ('ACC', 'Phenotype', 'HP:0006744', (8, 11)) ('non-metastatic cutaneous melanoma', 'Phenotype', 'HP:0012057', (13, 46)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (28, 46)) ('bladder urothelial carcinoma', 'Disease', (69, 97)) ('cutaneous melanoma', 'Disease', 'MESH:C562393', (28, 46)) ('carcinoma', 'Phenotype', 'HP:0030731', (88, 97)) ('high levels', 'Var', (173, 184)) ('GZMA', 'Gene', (197, 201)) ('GZMA', 'Gene', '3001', (197, 201)) ('PRF1', 'Gene', (188, 192)) ('melanoma', 'Phenotype', 'HP:0002861', (38, 46)) ('bladder urothelial carcinoma', 'Disease', 'MESH:D001749', (69, 97)) ('cutaneous melanoma', 'Disease', (28, 46)) 1353 29515971 In TCGA-LIHC, only the individual high levels of PRF1 and GZMA were significantly associated with a positive effect on patient survival. ('GZMA', 'Gene', '3001', (58, 62)) ('patient', 'Species', '9606', (119, 126)) ('LIHC', 'Disease', (8, 12)) ('PRF1', 'Gene', (49, 53)) ('LIHC', 'Disease', 'None', (8, 12)) ('high levels', 'Var', (34, 45)) ('GZMA', 'Gene', (58, 62)) 1354 29515971 A similar non-significant association of (individual or simultaneous) high GZMA and PRF1 expression with better effect on patient survival could also be observed in TCGA-MESO, ovarian cancer (GSE13876 and GSE49997), TCGA-STAD, TCGA-THCA, and TCGA-UCEC (Figure S1 in Supplementary Material). ('GZMA', 'Gene', '3001', (75, 79)) ('patient', 'Species', '9606', (122, 129)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (176, 190)) ('GSE49997', 'Var', (205, 213)) ('TCGA-MESO', 'Disease', (165, 174)) ('GSE13876', 'Var', (192, 200)) ('TCGA-UCEC', 'Disease', (242, 251)) ('cancer', 'Phenotype', 'HP:0002664', (184, 190)) ('GZMA', 'Gene', (75, 79)) ('ovarian cancer', 'Disease', 'MESH:D010051', (176, 190)) ('high', 'Var', (70, 74)) ('TCGA-THCA', 'Disease', (227, 236)) ('TCGA-STAD', 'Disease', (216, 225)) ('ovarian cancer', 'Disease', (176, 190)) ('PRF1', 'Gene', (84, 88)) 1355 29515971 These data suggest that high CYT is widely associated with an improved prognosis among the above-mentioned cancer types. ('improved', 'PosReg', (62, 70)) ('cancer', 'Phenotype', 'HP:0002664', (107, 113)) ('high CYT', 'Var', (24, 32)) ('cancer', 'Disease', 'MESH:D009369', (107, 113)) ('cancer', 'Disease', (107, 113)) 1356 29515971 On the contrary, across TCGA-LGG, BRCAs (GSE25066), and TCGA-THYM, both individual and simultaneous high levels of GZMA and PRF1 were significantly associated with a worse prognosis, whereas the simultaneous low levels of both genes led to a significant shift toward positive effect (Figure 6B). ('BRCA', 'Gene', '672', (34, 38)) ('GSE25066', 'Var', (41, 49)) ('BRCA', 'Gene', (34, 38)) ('GZMA', 'Gene', (115, 119)) ('GZMA', 'Gene', '3001', (115, 119)) ('PRF1', 'Gene', (124, 128)) ('associated with', 'Reg', (148, 163)) 1359 29515971 Analogous non-significant associations of (individual or simultaneous) high cytolytic levels with worse effect on patient survival were also observed in lung cancer (GSE30219, TCGA-LUAD, and TCGA-LUSC), TCGA-PAAD, TCGA-PRAD and GSE16560, and TCGA-READ (Figure S2 in Supplementary Material). ('cancer', 'Phenotype', 'HP:0002664', (158, 164)) ('lung cancer', 'Disease', 'MESH:D008175', (153, 164)) ('lung cancer', 'Disease', (153, 164)) ('high cytolytic levels', 'MPA', (71, 92)) ('lung cancer', 'Phenotype', 'HP:0100526', (153, 164)) ('patient', 'Species', '9606', (114, 121)) ('GSE30219', 'Var', (166, 174)) ('PAAD', 'Phenotype', 'HP:0006725', (208, 212)) 1361 29515971 Depending on the probe used, it seemed that a combination of high PRF1 and low GZMA levels yields a better patient outcome (GSE39582, TCGA-COAD, TCGA-COADREAD). ('COAD', 'Disease', (150, 154)) ('low', 'NegReg', (75, 78)) ('GZMA', 'Gene', '3001', (79, 83)) ('PRF1', 'MPA', (66, 70)) ('COAD', 'Disease', 'MESH:D029424', (139, 143)) ('high', 'Var', (61, 65)) ('COAD', 'Disease', 'MESH:D029424', (150, 154)) ('COAD', 'Disease', (139, 143)) ('patient', 'Species', '9606', (107, 114)) ('GZMA', 'Gene', (79, 83)) 1367 29515971 In DLBCL (GSE10846, and GSE32918), using various combinations of distinct molecular probes for the two cytolytic genes (PRF1, 214617_AT, 1553681_A_AT, or ILMN_1740633; GZMA, 205488_AT, or ILMN_1779324), we could not provide any significant association with patient survival. ('GSE32918', 'Var', (24, 32)) ('GZMA', 'Gene', '3001', (168, 172)) ('ILMN_1740633', 'Var', (154, 166)) ('patient', 'Species', '9606', (257, 264)) ('AT', 'Disease', 'None', (133, 135)) ('AT', 'Disease', 'None', (147, 149)) ('PRF1', 'Var', (120, 124)) ('GSE10846', 'Var', (10, 18)) ('AT', 'Disease', 'None', (181, 183)) ('GZMA', 'Gene', (168, 172)) 1368 29515971 A similar absence of significant associations was also detected in glioblastoma (GSE4271, GSE13041, and TCGA-GBM) and non-metastatic HNSCs. ('glioblastoma', 'Disease', (67, 79)) ('glioblastoma', 'Disease', 'MESH:D005909', (67, 79)) ('GBM', 'Phenotype', 'HP:0012174', (109, 112)) ('non-metastatic HNSCs', 'Disease', (118, 138)) ('glioblastoma', 'Phenotype', 'HP:0012174', (67, 79)) ('GSE13041', 'Var', (90, 98)) ('GSE4271', 'Chemical', '-', (81, 88)) ('GSE4271', 'Var', (81, 88)) 1406 29515971 Among them, recurrent mutations in immune-related genes have been proposed, such as B2M, HLA-A, -B, and -C, and CASP8, as well as copy number aberrations in loci containing immunosuppressive factors, including the receptors PD-L1/2 and CTLA-4. ('B2M', 'Gene', (84, 87)) ('CASP8', 'Gene', '841', (112, 117)) ('B2M', 'Gene', '567', (84, 87)) ('CTLA-4', 'Gene', '1493', (236, 242)) ('copy number aberrations', 'Var', (130, 153)) ('CTLA-4', 'Gene', (236, 242)) ('HLA-A, -B, and -C', 'Gene', '3105;3106;3107', (89, 106)) ('mutations', 'Var', (22, 31)) ('PD-L1/2', 'Gene', '29126;80380', (224, 231)) ('PD-L1/2', 'Gene', (224, 231)) ('CASP8', 'Gene', (112, 117)) 1411 29515971 Actually, recent clinical trials have demonstrated that blockage of this signaling can benefit patients with advanced melanoma, kidney, or non-small cell lung cancer. ('non-small cell lung cancer', 'Disease', 'MESH:D002289', (139, 165)) ('melanoma', 'Phenotype', 'HP:0002861', (118, 126)) ('melanoma', 'Disease', (118, 126)) ('lung cancer', 'Phenotype', 'HP:0100526', (154, 165)) ('melanoma', 'Disease', 'MESH:D008545', (118, 126)) ('patients', 'Species', '9606', (95, 103)) ('blockage', 'Var', (56, 64)) ('non-small cell lung cancer', 'Disease', (139, 165)) ('cancer', 'Phenotype', 'HP:0002664', (159, 165)) ('non-small cell lung cancer', 'Phenotype', 'HP:0030358', (139, 165)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (143, 165)) ('kidney', 'Disease', (128, 134)) 1419 29515971 Importantly, CTLA-4 blockade was reported to associate with bowel inflammation in melanoma patients, signifying that its signaling is crucial for the preservation of immune homeostasis in the gut. ('associate', 'Reg', (45, 54)) ('patients', 'Species', '9606', (91, 99)) ('bowel inflammation', 'Phenotype', 'HP:0002037', (60, 78)) ('melanoma', 'Phenotype', 'HP:0002861', (82, 90)) ('melanoma', 'Disease', (82, 90)) ('CTLA-4', 'Gene', '1493', (13, 19)) ('blockade', 'Var', (20, 28)) ('melanoma', 'Disease', 'MESH:D008545', (82, 90)) ('bowel inflammation', 'Disease', 'MESH:D007249', (60, 78)) ('CTLA-4', 'Gene', (13, 19)) ('bowel inflammation', 'Disease', (60, 78)) 1425 29515971 Inhibition of both IDO and arginase can enhance intratumoral inflammation. ('IDO', 'Gene', '3620', (19, 22)) ('IDO', 'Gene', (19, 22)) ('tumor', 'Disease', 'MESH:D009369', (53, 58)) ('arginase', 'Protein', (27, 35)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('inflammation', 'Disease', 'MESH:D007249', (61, 73)) ('inflammation', 'Disease', (61, 73)) ('tumor', 'Disease', (53, 58)) ('Inhibition', 'Var', (0, 10)) ('enhance', 'PosReg', (40, 47)) 1439 29515971 A very interesting improvement in the field was further made by Riaz et al., who showed that the mutation burden in melanoma patients decreases with successful anti-PD-1 blockade therapy, suggesting that the selection against mutant neoepitopes is a critical mechanism of action of this immunotherapy. ('Riaz', 'Gene', (64, 68)) ('mutant', 'Var', (226, 232)) ('mutation burden', 'MPA', (97, 112)) ('PD-1', 'Gene', (165, 169)) ('PD-1', 'Gene', '5133', (165, 169)) ('Riaz', 'Gene', '23598', (64, 68)) ('melanoma', 'Phenotype', 'HP:0002861', (116, 124)) ('melanoma', 'Disease', (116, 124)) ('melanoma', 'Disease', 'MESH:D008545', (116, 124)) ('decreases', 'NegReg', (134, 143)) ('patients', 'Species', '9606', (125, 133)) 1443 29515971 Overall, it seems that CYT is part of an inflammatory environment in a premalignant state of certain tumor types, whereas, in others, oncogenic mutations, copy number aberrations, or viral infection can induce a tumor-promoting inflammatory microenvironment, within which complex interactions between different cell types regulate cancer development and metastasis. ('copy number aberrations', 'Var', (155, 178)) ('cancer', 'Disease', (331, 337)) ('cancer', 'Disease', 'MESH:D009369', (331, 337)) ('induce', 'PosReg', (203, 209)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('tumor', 'Disease', (101, 106)) ('viral infection', 'Disease', 'MESH:D001102', (183, 198)) ('tumor', 'Disease', 'MESH:D009369', (212, 217)) ('tumor', 'Disease', 'MESH:D009369', (101, 106)) ('tumor', 'Phenotype', 'HP:0002664', (212, 217)) ('cancer', 'Phenotype', 'HP:0002664', (331, 337)) ('viral infection', 'Disease', (183, 198)) ('tumor', 'Disease', (212, 217)) ('mutations', 'Var', (144, 153)) 1450 29515971 In some tumor types (ACC, SKCM, BLCA, LIHC, MESO, OV, STAD, THCA, and UCEC), high CYT was associated with an improved outcome; whereas in others (LGG, BRCA, THYM, LUAD/LUSC, PAAD, PRAD, and READ) it is correlated with a worse outcome. ('BRCA', 'Gene', '672', (151, 155)) ('THYM', 'Disease', (157, 161)) ('LIHC', 'Disease', 'None', (38, 42)) ('BRCA', 'Gene', (151, 155)) ('tumor', 'Disease', 'MESH:D009369', (8, 13)) ('MESO', 'Disease', (44, 48)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('ACC', 'Phenotype', 'HP:0006744', (21, 24)) ('PAAD', 'Phenotype', 'HP:0006725', (174, 178)) ('PAAD', 'Disease', (174, 178)) ('improved', 'PosReg', (109, 117)) ('tumor', 'Disease', (8, 13)) ('LUAD/LUSC', 'Disease', (163, 172)) ('PRAD', 'Disease', (180, 184)) ('LIHC', 'Disease', (38, 42)) ('high CYT', 'Var', (77, 85)) 1451 29515971 Among LGG, THYM, and BRCA, we showed that both individual and simultaneous high levels of GZMA and PRF1 were significantly associated with a worse prognosis, whereas the simultaneous low levels of both cytolytic genes led to a significant shift toward a positive effect. ('associated', 'Reg', (123, 133)) ('GZMA', 'Gene', (90, 94)) ('BRCA', 'Gene', (21, 25)) ('PRF1', 'Gene', (99, 103)) ('high', 'Var', (75, 79)) ('GZMA', 'Gene', '3001', (90, 94)) ('BRCA', 'Gene', '672', (21, 25)) 1520 29270506 False-negative results occur more commonly in small tumors, dopamine-producing tumors, and some tumors with SDHx mutations. ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('dopamine', 'Chemical', 'MESH:D004298', (60, 68)) ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('tumors', 'Phenotype', 'HP:0002664', (52, 58)) ('tumors', 'Disease', (96, 102)) ('tumors', 'Phenotype', 'HP:0002664', (96, 102)) ('tumors', 'Disease', (52, 58)) ('tumors', 'Disease', 'MESH:D009369', (52, 58)) ('tumors', 'Disease', (79, 85)) ('mutations', 'Var', (113, 122)) ('small tumors', 'Disease', 'MESH:D058405', (46, 58)) ('tumors', 'Disease', 'MESH:D009369', (96, 102)) ('tumors', 'Disease', 'MESH:D009369', (79, 85)) ('SDHx', 'Chemical', '-', (108, 112)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('SDHx', 'Gene', (108, 112)) ('small tumors', 'Disease', (46, 58)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) 1527 29270506 Finally, MIBG scintigraphy has been reported to have low sensitivity in cases related to von Hippel-Lindau disease, SDHx mutations, or metastatic PPGLs. ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (89, 114)) ('mutations', 'Var', (121, 130)) ('SDHx', 'Chemical', '-', (116, 120)) ('SDHx', 'Gene', (116, 120)) ('MIBG', 'Chemical', 'MESH:D019797', (9, 13)) ('PPGLs', 'Chemical', '-', (146, 151)) ('von Hippel-Lindau disease', 'Disease', (89, 114)) 1530 29270506 It is now recognized that the tumor genotype can ascertain metastatic potential; tumors with SDHB mutations carry a higher malignant risk. ('tumors', 'Disease', (81, 87)) ('tumors', 'Disease', 'MESH:D009369', (81, 87)) ('SDHB', 'Gene', (93, 97)) ('tumor', 'Disease', 'MESH:D009369', (30, 35)) ('tumors', 'Phenotype', 'HP:0002664', (81, 87)) ('mutations', 'Var', (98, 107)) ('tumor', 'Disease', 'MESH:D009369', (81, 86)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('SDHB', 'Gene', '6390', (93, 97)) ('tumor', 'Disease', (30, 35)) ('tumor', 'Disease', (81, 86)) 1531 29270506 Deficient (abnormal) immunohistochemistry for SDHB is a sensitive and specific indicator of germline mutations in genes responsible for the assembly of the SDHB protein (SDHA, SDHB, SDHC, SDHD, and SDHAF2). ('SDHB', 'Gene', '6390', (156, 160)) ('SDHB', 'Gene', '6390', (176, 180)) ('SDHB', 'Gene', '6390', (46, 50)) ('mutations', 'Var', (101, 110)) ('SDHB', 'Gene', (176, 180)) ('SDHB', 'Gene', (46, 50)) ('SDHD', 'Gene', '6392', (188, 192)) ('SDHA', 'Gene', '6389', (170, 174)) ('SDHB', 'Gene', (156, 160)) ('SDHC', 'Gene', (182, 186)) ('SDHA', 'Gene', '6389', (198, 202)) ('SDHD', 'Gene', (188, 192)) ('SDHAF2', 'Gene', (198, 204)) ('SDHC', 'Gene', '6391', (182, 186)) ('SDHAF2', 'Gene', '54949', (198, 204)) ('SDHA', 'Gene', (170, 174)) ('SDHA', 'Gene', (198, 202)) 1534 29270506 These include well-studied disorders such as von Hippel-Lindau (VHL), multiple endocrine neoplasia type 2 (MEN2), neurofibromatosis type 1 (NF1), and the hereditary paraganglioma-pheochromocytoma caused by mutations in SDHA, SDHB, SDHC, SDHD, and SDHAF2. ('multiple endocrine neoplasia type 2', 'Disease', (70, 105)) ('VHL', 'Disease', 'MESH:D006623', (64, 67)) ('von Hippel-Lindau', 'Gene', (45, 62)) ('SDHA', 'Gene', '6389', (247, 251)) ('SDHAF2', 'Gene', (247, 253)) ('SDHC', 'Gene', '6391', (231, 235)) ('SDHAF2', 'Gene', '54949', (247, 253)) ('paraganglioma', 'Phenotype', 'HP:0002668', (165, 178)) ('von Hippel-Lindau', 'Gene', '7428', (45, 62)) ('neurofibromatosis type 1', 'Gene', (114, 138)) ('NF1', 'Gene', '4763', (140, 143)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (70, 105)) ('SDHD', 'Gene', '6392', (237, 241)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (179, 195)) ('neoplasia', 'Phenotype', 'HP:0002664', (89, 98)) ('mutations', 'Var', (206, 215)) ('SDHB', 'Gene', '6390', (225, 229)) ('VHL', 'Disease', (64, 67)) ('NF1', 'Gene', (140, 143)) ('SDHC', 'Gene', (231, 235)) ('hereditary paraganglioma-pheochromocytoma', 'Disease', (154, 195)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (79, 98)) ('SDHD', 'Gene', (237, 241)) ('SDHB', 'Gene', (225, 229)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (114, 131)) ('SDHA', 'Gene', (219, 223)) ('hereditary paraganglioma-pheochromocytoma', 'Disease', 'MESH:D010673', (154, 195)) ('neurofibromatosis type 1', 'Gene', '4763', (114, 138)) ('SDHA', 'Gene', '6389', (219, 223)) ('caused by', 'Reg', (196, 205)) ('SDHA', 'Gene', (247, 251)) 1537 29270506 The highest frequency of mutations in PPGLs occur within VHL and SDHx genes. ('mutations', 'Var', (25, 34)) ('VHL', 'Disease', (57, 60)) ('VHL', 'Disease', 'MESH:D006623', (57, 60)) ('PPGLs', 'Chemical', '-', (38, 43)) ('SDHx', 'Chemical', '-', (65, 69)) ('SDHx', 'Gene', (65, 69)) ('PPGLs', 'Gene', (38, 43)) 1538 29270506 In bladder PPGLs in particular, SDHB mutations have been reported in more than 50% of the patients. ('SDHB', 'Gene', '6390', (32, 36)) ('SDHB', 'Gene', (32, 36)) ('mutations', 'Var', (37, 46)) ('PPGLs', 'Chemical', '-', (11, 16)) ('reported', 'Reg', (57, 65)) ('patients', 'Species', '9606', (90, 98)) 1539 29270506 This is important, because SDHB mutations demonstrate high metastatic potential. ('metastatic potential', 'CPA', (59, 79)) ('mutations', 'Var', (32, 41)) ('SDHB', 'Gene', (27, 31)) ('SDHB', 'Gene', '6390', (27, 31)) 1542 29270506 Although immunohistochemistry staining was not suggestive of an SDHx mutation, there are reports of interobserver variability. ('mutation', 'Var', (69, 77)) ('SDHx', 'Chemical', '-', (64, 68)) ('SDHx', 'Gene', (64, 68)) 1543 29270506 Alternatively, a gene mutation in 1 of the newer genes such as EPAS1, KIF1B, and EGLN1 may be possible. ('EPAS1', 'Gene', '2034', (63, 68)) ('KIF1B', 'Gene', (70, 75)) ('EGLN1', 'Gene', (81, 86)) ('EPAS1', 'Gene', (63, 68)) ('KIF1B', 'Gene', '23095', (70, 75)) ('gene mutation', 'Var', (17, 30)) ('EGLN1', 'Gene', '54583', (81, 86)) 1550 28752085 PCC and PGL are inherited in as much as 80% of pediatric cases, and all patients with mutations should be followed closely given the risk of recurrence and malignancy. ('mutations', 'Var', (86, 95)) ('PGL', 'Gene', (8, 11)) ('PCC', 'Gene', (0, 3)) ('malignancy', 'Disease', 'MESH:D009369', (156, 166)) ('malignancy', 'Disease', (156, 166)) ('PCC', 'Phenotype', 'HP:0002666', (0, 3)) ('PGL', 'Phenotype', 'HP:0002668', (8, 11)) ('patients', 'Species', '9606', (72, 80)) 1551 28752085 While the presentation of chromaffin cell tumors has been well described with multiple endocrine neoplasia, NF1, and Von Hippel-Lindau syndromes, the identification of new gene mutations leading to chromaffin cell tumors at a young age is changing the landscape of how clinicians approach such cases. ('Von Hippel-Lindau syndromes', 'Disease', (117, 144)) ('mutations', 'Var', (177, 186)) ('tumor', 'Phenotype', 'HP:0002664', (214, 219)) ('Von Hippel-Lindau syndromes', 'Disease', 'MESH:D006623', (117, 144)) ('cell tumors', 'Disease', (37, 48)) ('NF1', 'Gene', '4763', (108, 111)) ('cell tumors', 'Disease', (209, 220)) ('cell tumors', 'Disease', 'MESH:D005935', (37, 48)) ('neoplasia', 'Phenotype', 'HP:0002664', (97, 106)) ('cell tumors', 'Disease', 'MESH:D005935', (209, 220)) ('NF', 'Phenotype', 'HP:0001067', (108, 110)) ('NF1', 'Gene', (108, 111)) ('chromaffin', 'Chemical', '-', (26, 36)) ('tumors', 'Phenotype', 'HP:0002664', (42, 48)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (78, 106)) ('chromaffin cell tumors', 'Phenotype', 'HP:0002666', (26, 48)) ('chromaffin', 'Chemical', '-', (198, 208)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) ('multiple endocrine neoplasia', 'Disease', (78, 106)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (87, 106)) ('leading to', 'Reg', (187, 197)) ('tumors', 'Phenotype', 'HP:0002664', (214, 220)) ('chromaffin cell tumors', 'Phenotype', 'HP:0002666', (198, 220)) 1552 28752085 The paraganglioma-pheochromocytoma syndromes (SDHx) comprise familial gene mutations, of which the SDHB gene mutation carries a high rate of malignancy. ('paraganglioma-pheochromocytoma syndromes', 'Disease', (4, 44)) ('SDHx', 'Chemical', '-', (46, 50)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (18, 34)) ('paraganglioma', 'Phenotype', 'HP:0002668', (4, 17)) ('malignancy', 'Disease', 'MESH:D009369', (141, 151)) ('paraganglioma-pheochromocytoma syndromes', 'Disease', 'MESH:D010673', (4, 44)) ('malignancy', 'Disease', (141, 151)) ('SDHB', 'Gene', '6390', (99, 103)) ('SDHB', 'Gene', (99, 103)) ('mutation', 'Var', (109, 117)) 1575 28752085 The mass effect from non-functional head and neck paragangliomas (HNPGLs) can lead to dysphagia, hoarseness, hearing disturbances, and pain. ('hoarseness', 'Phenotype', 'HP:0001609', (97, 107)) ('hearing disturbances', 'Phenotype', 'HP:0000365', (109, 129)) ('lead to', 'Reg', (78, 85)) ('dysphagia', 'Phenotype', 'HP:0002015', (86, 95)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (36, 64)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (45, 64)) ('pain', 'Disease', (135, 139)) ('hearing disturbances', 'Disease', 'MESH:D034381', (109, 129)) ('hearing disturbances', 'Disease', (109, 129)) ('non-functional', 'Var', (21, 35)) ('pain', 'Phenotype', 'HP:0012531', (135, 139)) ('PGL', 'Phenotype', 'HP:0002668', (68, 71)) ('HNPGLs', 'Phenotype', 'HP:0002864', (66, 72)) ('dysphagia', 'Disease', 'MESH:D003680', (86, 95)) ('paraganglioma', 'Phenotype', 'HP:0002668', (50, 63)) ('dysphagia', 'Disease', (86, 95)) ('pain', 'Disease', 'MESH:D010146', (135, 139)) ('neck paragangliomas', 'Disease', (45, 64)) ('hoarseness', 'Disease', (97, 107)) ('paragangliomas', 'Phenotype', 'HP:0002668', (50, 64)) 1576 28752085 The European-American-Pheochromocytoma-Paraganglioma-Registry (EAPPR) followed 164 unrelated pediatric patients diagnosed with PCCs/PGLs, 80% of which had a germline mutation in a gene associated with such tumors. ('tumor', 'Phenotype', 'HP:0002664', (206, 211)) ('tumors', 'Phenotype', 'HP:0002664', (206, 212)) ('germline mutation', 'Var', (157, 174)) ('tumors', 'Disease', (206, 212)) ('Pheochromocytoma-Paraganglioma', 'Disease', 'MESH:D010673', (22, 52)) ('tumors', 'Disease', 'MESH:D009369', (206, 212)) ('PCC', 'Phenotype', 'HP:0002666', (127, 130)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (22, 38)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (39, 52)) ('patients', 'Species', '9606', (103, 111)) ('Pheochromocytoma-Paraganglioma', 'Disease', (22, 52)) ('PGL', 'Phenotype', 'HP:0002668', (132, 135)) 1577 28752085 In addition to the known syndromic presentations of MEN II, NF1, and VHL, germline succinate dehydrogenase gene mutations (SDHx) involving the mitochondrial enzyme complex (SDH) form part of the familial PGL-PCC syndromes. ('PGL', 'Phenotype', 'HP:0002668', (204, 207)) ('syndromic', 'Disease', (25, 34)) ('NF', 'Phenotype', 'HP:0001067', (60, 62)) ('NF1', 'Gene', '4763', (60, 63)) ('syndromic', 'Disease', 'MESH:D013577', (25, 34)) ('NF1', 'Gene', (60, 63)) ('VHL', 'Disease', 'MESH:D006623', (69, 72)) ('SDHx', 'Chemical', '-', (123, 127)) ('mutations', 'Var', (112, 121)) ('familial PGL-PCC syndromes', 'Disease', (195, 221)) ('VHL', 'Disease', (69, 72)) ('PCC', 'Phenotype', 'HP:0002666', (208, 211)) ('MEN', 'Species', '9606', (52, 55)) 1588 28752085 Most patients have been found to carry germline mutations in SDHB, SDHC or SDHD. ('SDHC', 'Gene', '6391', (67, 71)) ('germline mutations', 'Var', (39, 57)) ('patients', 'Species', '9606', (5, 13)) ('SDHD', 'Gene', '6392', (75, 79)) ('SDHB', 'Gene', '6390', (61, 65)) ('SDHD', 'Gene', (75, 79)) ('SDHB', 'Gene', (61, 65)) ('SDHC', 'Gene', (67, 71)) 1594 28752085 Multiple other gene mutations associated with hereditary PCCs and PGLs have been identified in the past decade and include TMEM127 involved in the mTOR pathway, MAX that controls gene transcription as well as KIF 1B, EGLN1, IDH1, and FH, with unclear clinical significance. ('mutations', 'Var', (20, 29)) ('associated', 'Reg', (30, 40)) ('IDH1', 'Gene', '3417', (224, 228)) ('TMEM127', 'Gene', '55654', (123, 130)) ('EGLN1', 'Gene', '54583', (217, 222)) ('hereditary PCC', 'Disease', 'OMIM:115700', (46, 60)) ('KIF 1B', 'Gene', '23095', (209, 215)) ('mTOR', 'Gene', '2475', (147, 151)) ('EGLN1', 'Gene', (217, 222)) ('KIF 1B', 'Gene', (209, 215)) ('PGL', 'Phenotype', 'HP:0002668', (66, 69)) ('hereditary PCC', 'Disease', (46, 60)) ('IDH1', 'Gene', (224, 228)) ('PCC', 'Phenotype', 'HP:0002666', (57, 60)) ('TMEM127', 'Gene', (123, 130)) ('involved', 'Reg', (131, 139)) ('mTOR', 'Gene', (147, 151)) 1595 28752085 Table 2 lists the syndromic as well as newer gene mutations associated with PCCs and PGLs and describes the biochemical profile of such tumors, including the earliest age of presentation as noted in the literature. ('tumors', 'Disease', (136, 142)) ('PCCs', 'Disease', (76, 80)) ('syndromic', 'Disease', (18, 27)) ('PGLs', 'Disease', (85, 89)) ('tumors', 'Disease', 'MESH:D009369', (136, 142)) ('tumors', 'Phenotype', 'HP:0002664', (136, 142)) ('PCC', 'Phenotype', 'HP:0002666', (76, 79)) ('mutations', 'Var', (50, 59)) ('syndromic', 'Disease', 'MESH:D013577', (18, 27)) ('PGL', 'Phenotype', 'HP:0002668', (85, 88)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('associated', 'Reg', (60, 70)) 1598 28752085 Gene mutations in VHL, SDHx, and HIF2 confer a reduced oxidative response with angiogenesis and hypoxia and encompass cluster 1 tumors. ('oxidative response', 'MPA', (55, 73)) ('HIF2', 'Gene', (33, 37)) ('SDHx', 'Chemical', '-', (23, 27)) ('SDHx', 'Gene', (23, 27)) ('mutations', 'Var', (5, 14)) ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('VHL', 'Disease', (18, 21)) ('hypoxia', 'Disease', (96, 103)) ('VHL', 'Disease', 'MESH:D006623', (18, 21)) ('hypoxia', 'Disease', 'MESH:D000860', (96, 103)) ('tumors', 'Disease', (128, 134)) ('encompass', 'Reg', (108, 117)) ('tumors', 'Disease', 'MESH:D009369', (128, 134)) ('tumors', 'Phenotype', 'HP:0002664', (128, 134)) ('reduced', 'NegReg', (47, 54)) 1599 28752085 Gene mutations in RET, NF1, KIF 1B, TMEM 127, and MAX were found to activate kinase signaling pathways leading to tumors with such features, termed cluster 2 tumors. ('tumors', 'Phenotype', 'HP:0002664', (158, 164)) ('RET', 'Gene', '5979', (18, 21)) ('kinase signaling pathways', 'Pathway', (77, 102)) ('KIF 1B', 'Gene', (28, 34)) ('NF1', 'Gene', '4763', (23, 26)) ('KIF 1B', 'Gene', '23095', (28, 34)) ('tumors', 'Disease', 'MESH:D009369', (114, 120)) ('leading to', 'Reg', (103, 113)) ('tumor', 'Phenotype', 'HP:0002664', (158, 163)) ('tumors', 'Disease', (158, 164)) ('activate', 'PosReg', (68, 76)) ('NF1', 'Gene', (23, 26)) ('NF', 'Phenotype', 'HP:0001067', (23, 25)) ('RET', 'Gene', (18, 21)) ('tumors', 'Disease', 'MESH:D009369', (158, 164)) ('mutations', 'Var', (5, 14)) ('TMEM 127', 'Gene', '55654', (36, 44)) ('tumors', 'Phenotype', 'HP:0002664', (114, 120)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('TMEM 127', 'Gene', (36, 44)) ('tumors', 'Disease', (114, 120)) 1603 28752085 Those with SDHB mutations had the highest prevalence for malignancy with extra-adrenal and thoracic paraganglial tumors posing additional risk factors. ('malignancy', 'Disease', (57, 67)) ('SDHB', 'Gene', (11, 15)) ('paraganglial tumors', 'Disease', (100, 119)) ('paraganglial tumors', 'Disease', 'MESH:D009369', (100, 119)) ('mutations', 'Var', (16, 25)) ('paraganglial tumors', 'Phenotype', 'HP:0002668', (100, 119)) ('malignancy', 'Disease', 'MESH:D009369', (57, 67)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('extra-adrenal', 'Disease', (73, 86)) ('SDHB', 'Gene', '6390', (11, 15)) ('tumors', 'Phenotype', 'HP:0002664', (113, 119)) 1604 28752085 Adult studies have also shown that SDHB mutation carry a higher risk for malignancy at 13-23%. ('mutation', 'Var', (40, 48)) ('SDHB', 'Gene', (35, 39)) ('malignancy', 'Disease', 'MESH:D009369', (73, 83)) ('malignancy', 'Disease', (73, 83)) ('SDHB', 'Gene', '6390', (35, 39)) 1605 28752085 The European-American-Asian Pheochromocytoma-Paraganglioma Registry prospectively followed up on predominantly adult patients with the newer gene mutations SDHA, TMEM127, MAX, and SDHAF2 and determined that 12% (4/34) of SDHA mutation carriers and 10% (3/29) of TMEM127 mutation carriers had malignant tumors. ('Paraganglioma', 'Phenotype', 'HP:0002668', (45, 58)) ('tumor', 'Phenotype', 'HP:0002664', (302, 307)) ('TMEM127', 'Gene', '55654', (162, 169)) ('mutation', 'Var', (226, 234)) ('malignant tumors', 'Disease', (292, 308)) ('patients', 'Species', '9606', (117, 125)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (28, 44)) ('TMEM127', 'Gene', (262, 269)) ('Pheochromocytoma-Paraganglioma', 'Disease', (28, 58)) ('SDHA', 'Gene', (221, 225)) ('SDHA', 'Gene', '6389', (221, 225)) ('TMEM127', 'Gene', '55654', (262, 269)) ('SDHAF2', 'Gene', '54949', (180, 186)) ('SDHAF2', 'Gene', (180, 186)) ('SDHA', 'Gene', (180, 184)) ('SDHA', 'Gene', (156, 160)) ('TMEM127', 'Gene', (162, 169)) ('SDHA', 'Gene', '6389', (180, 184)) ('SDHA', 'Gene', '6389', (156, 160)) ('tumors', 'Phenotype', 'HP:0002664', (302, 308)) ('malignant tumors', 'Disease', 'MESH:D018198', (292, 308)) ('Pheochromocytoma-Paraganglioma', 'Disease', 'MESH:D010673', (28, 58)) 1610 28752085 While in the past one would consider the syndromes MEN2, VHL, NF1 or sporadic mutations as the cause of PCCs or PGLs, the discovery of new gene mutations that cause such tumors now needs to be incorporated into the diagnostic algorithm of patients thought to have a PCC or a PGL. ('VHL', 'Disease', 'MESH:D006623', (57, 60)) ('PGL', 'Phenotype', 'HP:0002668', (112, 115)) ('NF1', 'Gene', (62, 65)) ('cause', 'Reg', (159, 164)) ('NF', 'Phenotype', 'HP:0001067', (62, 64)) ('mutations', 'Var', (144, 153)) ('PGLs', 'Disease', (112, 116)) ('tumors', 'Disease', 'MESH:D009369', (170, 176)) ('PCC', 'Phenotype', 'HP:0002666', (104, 107)) ('mutations', 'Var', (78, 87)) ('PGL', 'Phenotype', 'HP:0002668', (275, 278)) ('PCCs', 'Disease', (104, 108)) ('VHL', 'Disease', (57, 60)) ('tumor', 'Phenotype', 'HP:0002664', (170, 175)) ('tumors', 'Phenotype', 'HP:0002664', (170, 176)) ('PCC', 'Disease', (266, 269)) ('patients', 'Species', '9606', (239, 247)) ('PCC', 'Phenotype', 'HP:0002666', (266, 269)) ('MEN', 'Species', '9606', (51, 54)) ('NF1', 'Gene', '4763', (62, 65)) ('tumors', 'Disease', (170, 176)) 1613 28752085 demonstrated that SDHD mutations exhibit a weak diffuse staining pattern while SDHB mutations had a completely absent staining. ('SDHD', 'Gene', '6392', (18, 22)) ('mutations', 'Var', (23, 32)) ('SDHB', 'Gene', '6390', (79, 83)) ('diffuse staining pattern', 'MPA', (48, 72)) ('SDHD', 'Gene', (18, 22)) ('SDHB', 'Gene', (79, 83)) 1614 28752085 Thus, a positive staining would entail intact SDHx subunits while a negative/weakly positive staining would indicate a mutation in the SDHx subunits. ('SDHx', 'Chemical', '-', (46, 50)) ('SDHx', 'Chemical', '-', (135, 139)) ('mutation', 'Var', (119, 127)) ('SDHx', 'Gene', (46, 50)) ('SDHx', 'Gene', (135, 139)) 1615 28752085 As can then be expected, syndromes that do not have a SDHx gene mutation, to include MEN II, VHL, and NF1, will stain positive for SDHx. ('SDHx', 'Gene', (54, 58)) ('mutation', 'Var', (64, 72)) ('MEN', 'Species', '9606', (85, 88)) ('SDHx', 'Chemical', '-', (54, 58)) ('NF1', 'Gene', (102, 105)) ('positive', 'Reg', (118, 126)) ('NF', 'Phenotype', 'HP:0001067', (102, 104)) ('VHL', 'Disease', 'MESH:D006623', (93, 96)) ('NF1', 'Gene', '4763', (102, 105)) ('VHL', 'Disease', (93, 96)) ('SDHx', 'Chemical', '-', (131, 135)) 1625 28752085 Tumors can rarely secrete a predominance of dopamine; these are usually extra-adrenal PGLs with SDHx gene mutations. ('SDHx', 'Gene', (96, 100)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('PGL', 'Phenotype', 'HP:0002668', (86, 89)) ('dopamine', 'Chemical', 'MESH:D004298', (44, 52)) ('SDHx', 'Chemical', '-', (96, 100)) ('mutations', 'Var', (106, 115)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) 1629 28752085 Sensitivities and specificities of CgA and plasma metanephrines were 73.2/95.9 and 70.7/98.6%, respectively, in SDHB mutation carriers with PCCs and sympathetic PGLs. ('PGL', 'Phenotype', 'HP:0002668', (161, 164)) ('SDHB', 'Gene', '6390', (112, 116)) ('CgA', 'Gene', '1113', (35, 38)) ('SDHB', 'Gene', (112, 116)) ('sympathetic PGLs', 'Disease', (149, 165)) ('metanephrines', 'Chemical', 'MESH:D008676', (50, 63)) ('PCC', 'Phenotype', 'HP:0002666', (140, 143)) ('PCCs', 'Disease', (140, 144)) ('mutation', 'Var', (117, 125)) ('CgA', 'Gene', (35, 38)) 1640 28752085 These include 123metaiodobenzylguanidine (123I-MIBG) scan, positron emission tomography (PET) with [18F] fluorodopamine (FDA), [18F] fluorodeoxyglucose (FDG), and [18F] fluorodihydroxyphenylalanine (F-DOPA). ('123metaiodobenzylguanidine', 'MPA', (14, 40)) ('F-DOPA', 'Chemical', '-', (199, 205)) ('[18F] fluorodopamine', 'Chemical', '-', (99, 119)) ('FDA', 'Chemical', '-', (121, 124)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (42, 51)) ('FDG', 'Chemical', 'MESH:D019788', (153, 156)) ('[18F] fluorodeoxyglucose', 'Chemical', 'MESH:D019788', (127, 151)) ('[18F] fluorodihydroxyphenylalanine', 'Chemical', 'MESH:C043437', (163, 197)) ('[18F] fluorodihydroxyphenylalanine', 'Var', (163, 197)) ('123metaiodobenzylguanidine', 'Chemical', '-', (14, 40)) 1645 28752085 In contrast, [18F]-FDG PET has been the recommended functional imaging technique to evaluate malignant and metastatic PCCs/PGLs, particularly in SDHB mutation carriers in adults. ('SDHB', 'Gene', '6390', (145, 149)) ('PCC', 'Phenotype', 'HP:0002666', (118, 121)) ('PGL', 'Phenotype', 'HP:0002668', (123, 126)) ('mutation', 'Var', (150, 158)) ('SDHB', 'Gene', (145, 149)) ('FDG', 'Chemical', 'MESH:D019788', (19, 22)) ('malignant', 'Disease', (93, 102)) ('carriers', 'Reg', (159, 167)) 1646 28752085 Recent advances in functional imaging of PCCs/PGLs have led to the use of radiolabeled DOTA peptides, such as [68Ga]-DOTATATE PET, which has high affinity for somatostatin receptor 2. ('[68Ga]', 'Var', (110, 116)) ('somatostatin receptor 2', 'Gene', (159, 182)) ('DOTATATE', 'Chemical', '-', (117, 125)) ('PCC', 'Phenotype', 'HP:0002666', (41, 44)) ('PGL', 'Phenotype', 'HP:0002668', (46, 49)) ('somatostatin receptor 2', 'Gene', '6752', (159, 182)) 1647 28752085 Adult studies have demonstrated the superiority of [68Ga]-DOTATATE PET in localizing metastatic SDHB-associated PCCs/PGLs over the other functional imaging studies, excluding MIBG. ('DOTATATE', 'Chemical', '-', (58, 66)) ('metastatic', 'Disease', (85, 95)) ('PCC', 'Phenotype', 'HP:0002666', (112, 115)) ('SDHB', 'Gene', '6390', (96, 100)) ('PGL', 'Phenotype', 'HP:0002668', (117, 120)) ('SDHB', 'Gene', (96, 100)) ('[68Ga]-DOTATATE', 'Var', (51, 66)) ('MIBG', 'Chemical', 'MESH:D019797', (175, 179)) 1649 28752085 Another study confirmed the high detection rate of PCCs/PGLs using [68Ga]-DOTATATE PET but noted that [18F]-FDG PET had higher uptake than the former in cases of mutations involving the pseudohypoxic cluster and a dedifferentiated tumor with loss of SSTR expression. ('tumor', 'Disease', 'MESH:D009369', (231, 236)) ('mutations', 'Var', (162, 171)) ('[18F]-FDG', 'Var', (102, 111)) ('FDG', 'Chemical', 'MESH:D019788', (108, 111)) ('tumor', 'Phenotype', 'HP:0002664', (231, 236)) ('pseudohypoxic cluster', 'Disease', (186, 207)) ('higher', 'PosReg', (120, 126)) ('tumor', 'Disease', (231, 236)) ('SSTR', 'Gene', (250, 254)) ('PCC', 'Phenotype', 'HP:0002666', (51, 54)) ('pseudohypoxic cluster', 'Disease', 'MESH:D003027', (186, 207)) ('uptake', 'MPA', (127, 133)) ('PGL', 'Phenotype', 'HP:0002668', (56, 59)) ('DOTATATE', 'Chemical', '-', (74, 82)) 1650 28752085 In addition, CT with 123I-MIBG proved to have a lower lesion detection rate than [68Ga]-DOTATATE PET and [18F]-FDG PET in identifying PCCs and PGLs. ('PGL', 'Phenotype', 'HP:0002668', (143, 146)) ('lower', 'NegReg', (48, 53)) ('lesion detection rate', 'MPA', (54, 75)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (21, 30)) ('123I-MIBG', 'Var', (21, 30)) ('FDG', 'Chemical', 'MESH:D019788', (111, 114)) ('PCCs', 'Disease', (134, 138)) ('PCC', 'Phenotype', 'HP:0002666', (134, 137)) ('PGLs', 'Disease', (143, 147)) ('DOTATATE', 'Chemical', '-', (88, 96)) 1652 28752085 Beta blockade is instituted following alpha blockade to offset reflex tachycardia from alpha-2 receptor antagonism and should never precede alpha blockade. ('alpha-2 receptor', 'Protein', (87, 103)) ('tachycardia', 'Phenotype', 'HP:0001649', (70, 81)) ('tachycardia', 'Disease', (70, 81)) ('tachycardia', 'Disease', 'MESH:D013610', (70, 81)) ('antagonism', 'Var', (104, 114)) 1670 28752085 The adult literature reviewed the efficacy of preoperative phenoxybenzamine, doxazosin, and prazosin in terms of having fewer hemodynamic fluctuations intraoperatively. ('prazosin', 'Chemical', 'MESH:D011224', (92, 100)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (59, 75)) ('phenoxybenzamine', 'Var', (59, 75)) ('doxazosin', 'Chemical', 'MESH:D017292', (77, 86)) ('hemodynamic fluctuations', 'MPA', (126, 150)) 1672 28752085 Monotherapy with an alpha blocker has been found to cause hemodynamic instability intraoperatively during tumor manipulation. ('hemodynamic instability', 'MPA', (58, 81)) ('tumor', 'Disease', 'MESH:D009369', (106, 111)) ('cause', 'Reg', (52, 57)) ('Monotherapy', 'Var', (0, 11)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('tumor', 'Disease', (106, 111)) 1673 28752085 Metyrosine, a tyrosine hydroxylase inhibitor, prevents catecholamine synthesis and has been used in adults to prevent intraoperative BP fluctuations. ('prevents', 'NegReg', (46, 54)) ('catecholamine synthesis', 'MPA', (55, 78)) ('catecholamine', 'Chemical', 'MESH:D002395', (55, 68)) ('tyrosine hydroxylase', 'Gene', (14, 34)) ('Metyrosine', 'Chemical', 'MESH:D019805', (0, 10)) ('Metyrosine', 'Var', (0, 10)) ('tyrosine hydroxylase', 'Gene', '7054', (14, 34)) 1674 28752085 The combination of phenoxybenzamine or prazosin and metyrosine in adults resulted in better BP control pre- and intraoperatively, with less need for pressure agents intraoperatively than when using phenoxybenzamine alone. ('better', 'PosReg', (85, 91)) ('prazosin', 'Var', (39, 47)) ('prazosin', 'Chemical', 'MESH:D011224', (39, 47)) ('phenoxybenzamine', 'Var', (19, 35)) ('metyrosine', 'Chemical', 'MESH:D019805', (52, 62)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (19, 35)) ('BP control', 'MPA', (92, 102)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (198, 214)) ('metyrosine', 'Var', (52, 62)) 1676 28752085 They note their experience to be in agreement with the adult literature that metyrosine use is associated with a decreased need for intraoperative vasoactive medications, fluids, and decreased blood loss. ('metyrosine', 'Chemical', 'MESH:D019805', (77, 87)) ('decreased blood loss', 'Disease', 'MESH:D006473', (183, 203)) ('metyrosine', 'Var', (77, 87)) ('decreased blood loss', 'Disease', (183, 203)) ('decreased', 'NegReg', (113, 122)) 1678 28752085 Although there were no significant differences in BPs pre-, intra- and postoperatively, careful review of patients showed that those who received metyrosine had more severe disease and more stable BPs intraoperatively. ('severe disease', 'Disease', 'MESH:D056729', (166, 180)) ('metyrosine', 'Var', (146, 156)) ('severe disease', 'Disease', (166, 180)) ('patients', 'Species', '9606', (106, 114)) ('more', 'PosReg', (185, 189)) ('metyrosine', 'Chemical', 'MESH:D019805', (146, 156)) 1699 28752085 The use of phenoxybenzamine is associated with postoperative hypotension from sustained alpha blockade for the 24 h following surgery. ('phenoxybenzamine', 'Var', (11, 27)) ('hypotension', 'Disease', 'MESH:D007022', (61, 72)) ('postoperative', 'MPA', (47, 60)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (11, 27)) ('hypotension', 'Disease', (61, 72)) ('hypotension', 'Phenotype', 'HP:0002615', (61, 72)) 1710 28752085 Genetic testing was not available during that time period except for five patients who tested positive for a RET mutation (three patients) or an SDHD or SDHB mutation (two patients). ('mutation', 'Var', (113, 121)) ('RET', 'Gene', (109, 112)) ('SDHD', 'Gene', (145, 149)) ('patients', 'Species', '9606', (129, 137)) ('SDHB', 'Gene', (153, 157)) ('patients', 'Species', '9606', (74, 82)) ('mutation', 'Var', (158, 166)) ('RET', 'Gene', '5979', (109, 112)) ('patients', 'Species', '9606', (172, 180)) ('positive', 'Reg', (94, 102)) ('SDHD', 'Gene', '6392', (145, 149)) ('SDHB', 'Gene', '6390', (153, 157)) 1714 28752085 Three of the patients had VHL, three had SDHB mutations, two had NF1, and one SDHA with the cause of death being metastases in seven and cardiac failure in one patient. ('patients', 'Species', '9606', (13, 21)) ('cardiac failure', 'Disease', (137, 152)) ('cardiac failure', 'Disease', 'MESH:D006333', (137, 152)) ('patient', 'Species', '9606', (160, 167)) ('cardiac failure', 'Phenotype', 'HP:0001635', (137, 152)) ('metastases', 'Disease', 'MESH:D009362', (113, 123)) ('VHL', 'Disease', (26, 29)) ('mutations', 'Var', (46, 55)) ('metastases', 'Disease', (113, 123)) ('death', 'Disease', (101, 106)) ('SDHA', 'Gene', (78, 82)) ('patient', 'Species', '9606', (13, 20)) ('SDHA', 'Gene', '6389', (78, 82)) ('SDHB', 'Gene', '6390', (41, 45)) ('NF1', 'Gene', '4763', (65, 68)) ('VHL', 'Disease', 'MESH:D006623', (26, 29)) ('NF', 'Phenotype', 'HP:0001067', (65, 67)) ('death', 'Disease', 'MESH:D003643', (101, 106)) ('NF1', 'Gene', (65, 68)) ('SDHB', 'Gene', (41, 45)) 1725 28752085 Recurrences were significantly more common in patients with germline mutations than those with sporadic disease and tended to recur 10 years earlier, with a latency period of 23 versus 33 years, respectively. ('patients', 'Species', '9606', (46, 54)) ('sporadic disease', 'Disease', (95, 111)) ('sporadic disease', 'Disease', 'MESH:D004421', (95, 111)) ('germline mutations', 'Var', (60, 78)) ('common', 'Reg', (36, 42)) 1726 28752085 The mutations seen with these recurrent tumors were associated with VHL and SDHD mutations. ('SDHD', 'Gene', (76, 80)) ('SDHD', 'Gene', '6392', (76, 80)) ('VHL', 'Disease', (68, 71)) ('VHL', 'Disease', 'MESH:D006623', (68, 71)) ('tumors', 'Phenotype', 'HP:0002664', (40, 46)) ('tumors', 'Disease', 'MESH:D009369', (40, 46)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('associated', 'Reg', (52, 62)) ('mutations', 'Var', (81, 90)) ('mutations', 'Var', (4, 13)) ('tumors', 'Disease', (40, 46)) 1727 28752085 Within these gene-specific mutations, SDHD mutations had a recurrent tumor after 18 years of latency versus 21 years for VHL mutations. ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('tumor', 'Disease', (69, 74)) ('VHL', 'Disease', 'MESH:D006623', (121, 124)) ('mutations', 'Var', (43, 52)) ('SDHD', 'Gene', '6392', (38, 42)) ('SDHD', 'Gene', (38, 42)) ('VHL', 'Disease', (121, 124)) ('tumor', 'Disease', 'MESH:D009369', (69, 74)) 1728 28752085 HNPGLs recurred in 4% of pediatric patients and were caused by SDHD mutations at initial diagnosis and during recurrences. ('PGL', 'Phenotype', 'HP:0002668', (2, 5)) ('caused by', 'Reg', (53, 62)) ('SDHD', 'Gene', '6392', (63, 67)) ('patients', 'Species', '9606', (35, 43)) ('mutations', 'Var', (68, 77)) ('HNPGLs', 'Phenotype', 'HP:0002864', (0, 6)) ('SDHD', 'Gene', (63, 67)) ('HNPGLs', 'Disease', (0, 6)) 1729 28752085 Seven percent of patients had a third recurrence, with a time interval of 1-20 years (mean 5 years) from second to third tumor; they all had germline mutations. ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('had', 'Reg', (137, 140)) ('tumor', 'Disease', (121, 126)) ('patients', 'Species', '9606', (17, 25)) ('germline mutations', 'Var', (141, 159)) ('tumor', 'Disease', 'MESH:D009369', (121, 126)) 1730 28752085 The prevalence of malignancy was highest in SDHB mutation-positive individuals, with extra-adrenal and thoracic PGLs posing added risk for malignancy. ('highest', 'Reg', (33, 40)) ('SDHB', 'Gene', '6390', (44, 48)) ('malignancy', 'Disease', 'MESH:D009369', (18, 28)) ('PGL', 'Phenotype', 'HP:0002668', (112, 115)) ('SDHB', 'Gene', (44, 48)) ('malignancy', 'Disease', 'MESH:D009369', (139, 149)) ('malignancy', 'Disease', (18, 28)) ('mutation-positive', 'Var', (49, 66)) ('malignancy', 'Disease', (139, 149)) 1732 28752085 Of those, 72% (23 patients) had a germline mutation in SDHB, 9.4% (3 patients) had an SDHD mutation, and 6.3% (2 patients) had a VHL mutation, with the absence of a known mutation in the remainder (4 patients). ('SDHB', 'Gene', (55, 59)) ('VHL', 'Disease', (129, 132)) ('SDHB', 'Gene', '6390', (55, 59)) ('SDHD', 'Gene', (86, 90)) ('patients', 'Species', '9606', (200, 208)) ('patients', 'Species', '9606', (113, 121)) ('germline mutation', 'Var', (34, 51)) ('patients', 'Species', '9606', (18, 26)) ('patients', 'Species', '9606', (69, 77)) ('VHL', 'Disease', 'MESH:D006623', (129, 132)) ('SDHD', 'Gene', '6392', (86, 90)) 1733 28752085 The study that established plasma methoxytyramine as a biomarker for metastatic PCCs and PGLs also recognized the association between extra-adrenal disease, tumor size >5 cm and SDHB mutation carriers associated with a high risk of malignancy. ('tumor', 'Disease', (157, 162)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (34, 49)) ('PGL', 'Phenotype', 'HP:0002668', (89, 92)) ('PCC', 'Phenotype', 'HP:0002666', (80, 83)) ('adrenal disease', 'Phenotype', 'HP:0000834', (140, 155)) ('tumor', 'Disease', 'MESH:D009369', (157, 162)) ('tumor', 'Phenotype', 'HP:0002664', (157, 162)) ('adrenal disease', 'Disease', 'MESH:D000309', (140, 155)) ('adrenal disease', 'Disease', (140, 155)) ('malignancy', 'Disease', 'MESH:D009369', (232, 242)) ('associated', 'Reg', (201, 211)) ('mutation', 'Var', (183, 191)) ('malignancy', 'Disease', (232, 242)) ('SDHB', 'Gene', '6390', (178, 182)) ('SDHB', 'Gene', (178, 182)) 1736 28752085 For example, SDHB mutations have high risk of metastasis, VHL and SDHD mutation carriers have high recurrence rates, and SDHA and TMEM127 have now been identified to confer added risks of malignancy. ('SDHD', 'Gene', '6392', (66, 70)) ('VHL', 'Disease', (58, 61)) ('malignancy', 'Disease', (188, 198)) ('VHL', 'Disease', 'MESH:D006623', (58, 61)) ('SDHB', 'Gene', '6390', (13, 17)) ('TMEM127', 'Gene', (130, 137)) ('metastasis', 'CPA', (46, 56)) ('SDHA', 'Gene', (121, 125)) ('SDHB', 'Gene', (13, 17)) ('TMEM127', 'Gene', '55654', (130, 137)) ('SDHA', 'Gene', '6389', (121, 125)) ('recurrence', 'MPA', (99, 109)) ('malignancy', 'Disease', 'MESH:D009369', (188, 198)) ('SDHD', 'Gene', (66, 70)) ('mutations', 'Var', (18, 27)) 1737 28752085 Recommendations of the EAPPR are to perform annual surveillance for the first 3 years after initial diagnosis of mutation carriers, this being the time frame where malignancy is apparent unless diagnosed at presentation, followed by lifelong follow-up. ('malignancy', 'Disease', (164, 174)) ('mutation', 'Var', (113, 121)) ('malignancy', 'Disease', 'MESH:D009369', (164, 174)) 1740 28752085 The identification of new gene mutations and the determination of recurrence and malignancy rates have allowed clinicians to acquire a better understanding of this disease process. ('malignancy', 'Disease', 'MESH:D009369', (81, 91)) ('mutations', 'Var', (31, 40)) ('malignancy', 'Disease', (81, 91)) 1742 28752085 All patients with genetic mutations should be followed throughout their lifetime given the risk of recurrence and malignancy. ('malignancy', 'Disease', 'MESH:D009369', (114, 124)) ('genetic mutations', 'Var', (18, 35)) ('patients', 'Species', '9606', (4, 12)) ('malignancy', 'Disease', (114, 124)) 1743 28752085 Those with SDHB gene mutations ought to be aggressively followed given the high risk of metastatic disease. ('SDHB', 'Gene', '6390', (11, 15)) ('SDHB', 'Gene', (11, 15)) ('mutations', 'Var', (21, 30)) 1749 24449023 Screening for RET revealed a rare S891A mutation located in the intracellular tyrosine kinase domain. ('RET', 'Gene', '5979', (14, 17)) ('S891A', 'Var', (34, 39)) ('S891A', 'Mutation', 'rs75234356', (34, 39)) ('RET', 'Gene', (14, 17)) 1752 24449023 Our report suggests that cases with S891A mutation, akin to those with other RET mutations, require screening for pheochromocytoma. ('RET', 'Gene', (77, 80)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (114, 130)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (114, 130)) ('S891A', 'Var', (36, 41)) ('S891A', 'Mutation', 'rs75234356', (36, 41)) ('RET', 'Gene', '5979', (77, 80)) ('pheochromocytoma', 'Disease', (114, 130)) 1756 24449023 Most of the mutations, found in the cysteine-rich extracellular domain, give rise to ligand-independent receptor dimerization and cross-phosphorylation, leading to constitutive activation of the downstream signal of the receptor. ('ligand-independent', 'MPA', (85, 103)) ('constitutive', 'MPA', (164, 176)) ('mutations', 'Var', (12, 21)) ('activation', 'PosReg', (177, 187)) ('dimerization', 'MPA', (113, 125)) ('cysteine', 'Chemical', 'MESH:D003545', (36, 44)) ('cross-phosphorylation', 'MPA', (130, 151)) ('downstream signal', 'MPA', (195, 212)) 1757 24449023 Mutation of the cysteine codon 634 constitutes 80-90 % of MEN2A cases, although those caused by mutations of the cysteine codon 611, 618, and 620 are also observed. ('MEN2A', 'Gene', '5979', (58, 63)) ('caused', 'Reg', (86, 92)) ('MEN2A', 'Gene', (58, 63)) ('Mutation', 'Var', (0, 8)) ('cysteine', 'Chemical', 'MESH:D003545', (113, 121)) ('cysteine', 'Chemical', 'MESH:D003545', (16, 24)) 1758 24449023 Although they are a minor subset, RET mutations in MEN2A cases are also identified within the intracellular domain, including those originally reported as mutations of familial medullary thyroid carcinoma (FMTC). ('thyroid carcinoma', 'Disease', 'MESH:D013964', (187, 204)) ('RET', 'Gene', '5979', (34, 37)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (177, 204)) ('MEN2A', 'Gene', (51, 56)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (187, 204)) ('RET', 'Gene', (34, 37)) ('thyroid carcinoma', 'Disease', (187, 204)) ('MEN2A', 'Gene', '5979', (51, 56)) ('MTC', 'Phenotype', 'HP:0002865', (207, 210)) ('carcinoma', 'Phenotype', 'HP:0030731', (195, 204)) ('mutations', 'Var', (38, 47)) 1759 24449023 On the other hand, most cases with MEN2B carry M918T or A883F mutations in the tyrosine kinase domain, suggesting strong genotype-phenotype correlations. ('MEN2B', 'Gene', (35, 40)) ('M918T', 'Mutation', 'rs74799832', (47, 52)) ('MEN2B', 'Gene', '5979', (35, 40)) ('A883F', 'Var', (56, 61)) ('A883F', 'Mutation', 'rs377767429', (56, 61)) ('M918T', 'Var', (47, 52)) 1761 24449023 In particular, mutations at codons 609, 768, 790, 791, 804 and 891 are classified as level 1, having the lowest risk for aggressiveness among the three levels of MTC. ('lowest', 'NegReg', (105, 111)) ('aggressiveness', 'Disease', 'MESH:D001523', (121, 135)) ('mutations', 'Var', (15, 24)) ('MTC', 'Phenotype', 'HP:0002865', (162, 165)) ('aggressiveness', 'Disease', (121, 135)) ('aggressiveness', 'Phenotype', 'HP:0000718', (121, 135)) 1762 24449023 A rare mutation, S891A, has been associated solely with intermediate-risk FMTC. ('FMTC', 'Disease', (74, 78)) ('S891A', 'Mutation', 'rs75234356', (17, 22)) ('associated', 'Reg', (33, 43)) ('MTC', 'Phenotype', 'HP:0002865', (75, 78)) ('S891A', 'Var', (17, 22)) 1763 24449023 For the carriers of such FMTC mutations, intensive screening for age-related development of pheochromocytoma need not be started until they are 20 years old. ('pheochromocytoma', 'Disease', (92, 108)) ('FMTC', 'Gene', (25, 29)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (92, 108)) ('mutations', 'Var', (30, 39)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (92, 108)) ('MTC', 'Phenotype', 'HP:0002865', (26, 29)) 1764 24449023 However, a rare case with a S891A mutation expressing MTC and pheochromocytoma was recently reported, suggesting the limitation of genotype-based predictions. ('S891A mutation', 'Var', (28, 42)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (62, 78)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('S891A', 'Mutation', 'rs75234356', (28, 33)) ('MTC', 'Phenotype', 'HP:0002865', (54, 57)) ('pheochromocytoma', 'Disease', (62, 78)) 1765 24449023 In this manuscript, we report a rare case of a patient who was affected by bilateral pheochromocytomas as the first manifestation of MEN2A, whose subsequent screening for RET mutation identified S891A. ('patient', 'Species', '9606', (47, 54)) ('RET', 'Gene', (171, 174)) ('S891A', 'Mutation', 'rs75234356', (195, 200)) ('RET', 'Gene', '5979', (171, 174)) ('bilateral pheochromocytomas', 'Disease', (75, 102)) ('S891A', 'Var', (195, 200)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (85, 102)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (85, 101)) ('MEN2A', 'Gene', '5979', (133, 138)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (75, 102)) ('MEN2A', 'Gene', (133, 138)) 1775 24449023 Finally, screening for the RET gene was performed after appropriate informed consent was obtained (approved by the Ethical Review Board for Human Genome Studies at Fujita Health University), and, unexpectedly, the S891A mutation was identified. ('Human', 'Species', '9606', (140, 145)) ('S891A', 'Mutation', 'rs75234356', (214, 219)) ('S891A', 'Var', (214, 219)) ('RET', 'Gene', (27, 30)) ('RET', 'Gene', '5979', (27, 30)) 1781 24449023 The 27-year-old son requested RET mutation screening, and indeed, the S891A mutation was identified (Fig. ('S891A', 'Mutation', 'rs75234356', (70, 75)) ('RET', 'Gene', (30, 33)) ('RET', 'Gene', '5979', (30, 33)) ('S891A', 'Var', (70, 75)) 1783 24449023 S891A mutation constitutes 2 % of all RET mutations identified in MEN2/FMTC cases. ('RET', 'Gene', '5979', (38, 41)) ('S891A', 'Mutation', 'rs75234356', (0, 5)) ('MEN', 'Species', '9606', (66, 69)) ('MEN2/FMTC', 'Disease', (66, 75)) ('MTC', 'Phenotype', 'HP:0002865', (72, 75)) ('RET', 'Gene', (38, 41)) ('S891A mutation', 'Var', (0, 14)) 1784 24449023 Early reports stress the association of this mutation with FMTC, but accumulating evidence shows the mutant's capacity to induce a wider spectrum of MEN2A. ('FMTC', 'Disease', (59, 63)) ('mutant', 'Var', (101, 107)) ('mutation', 'Var', (45, 53)) ('MEN2A', 'Gene', '5979', (149, 154)) ('MEN2A', 'Gene', (149, 154)) ('induce', 'Reg', (122, 128)) ('MTC', 'Phenotype', 'HP:0002865', (60, 63)) 1785 24449023 S891A mutation causes MTC in 63.5 % of cases, pheochromocytoma in 4.1 % of cases and parathyroid hyperplasia in 4.1 % of cases. ('causes', 'Reg', (15, 21)) ('pheochromocytoma', 'Disease', (46, 62)) ('parathyroid hyperplasia', 'Disease', (85, 108)) ('parathyroid hyperplasia', 'Phenotype', 'HP:0008208', (85, 108)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (46, 62)) ('S891A', 'Mutation', 'rs75234356', (0, 5)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (46, 62)) ('MTC', 'Phenotype', 'HP:0002865', (22, 25)) ('S891A mutation', 'Var', (0, 14)) ('parathyroid hyperplasia', 'Disease', 'MESH:D006965', (85, 108)) ('MTC', 'Disease', (22, 25)) 1786 24449023 Compilation of MEN2A-related clinical manifestation in patients with RETS891A mutation in previous reports is described in Table 2. ('mutation', 'Var', (78, 86)) ('RETS891A', 'Gene', (69, 77)) ('MEN2A', 'Gene', (15, 20)) ('MEN2A', 'Gene', '5979', (15, 20)) ('patients', 'Species', '9606', (55, 63)) 1787 24449023 Indeed, the management guideline of medullary thyroid cancer by the American Thyroid Association categorizes pheochromocytoma in S891A mutation as 'rare'. ('S891A', 'Mutation', 'rs75234356', (129, 134)) ('pheochromocytoma', 'Disease', (109, 125)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (46, 60)) ('thyroid cancer', 'Disease', (46, 60)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (109, 125)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (109, 125)) ('thyroid cancer', 'Disease', 'MESH:D013964', (46, 60)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (36, 60)) ('cancer', 'Phenotype', 'HP:0002664', (54, 60)) ('S891A mutation', 'Var', (129, 143)) 1788 24449023 None of ten Japanese cases with S891A mutation reported in a recent study had pheochromocytoma, but our case report combined with previous data indicates that S891A patients as well as other MEN2A patients require early detection of subclinical pheochromocytoma to prevent a potential hypertensive crisis In MEN2 patients, the gain-of-function mutation in the RET receptor tyrosine kinase gene constitutively activates the downstream signals, leading to transformation of the cells. ('patients', 'Species', '9606', (197, 205)) ('hypertensive', 'Disease', 'MESH:D006973', (285, 297)) ('pheochromocytoma', 'Disease', (78, 94)) ('pheochromocytoma', 'Disease', (245, 261)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (78, 94)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (245, 261)) ('transformation of the cells', 'CPA', (454, 481)) ('mutation', 'Var', (344, 352)) ('patients', 'Species', '9606', (165, 173)) ('MEN', 'Species', '9606', (191, 194)) ('RET', 'Gene', (360, 363)) ('activates', 'PosReg', (409, 418)) ('S891A', 'Mutation', 'rs75234356', (159, 164)) ('patients', 'Species', '9606', (313, 321)) ('S891A', 'Mutation', 'rs75234356', (32, 37)) ('MEN', 'Species', '9606', (308, 311)) ('hypertensive', 'Disease', (285, 297)) ('gain-of-function', 'PosReg', (327, 343)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (285, 304)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (245, 261)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (78, 94)) ('MEN2A', 'Gene', '5979', (191, 196)) ('RET', 'Gene', '5979', (360, 363)) ('MEN2A', 'Gene', (191, 196)) 1789 24449023 Although the mutations in the cysteine-rich extracellular domain all target cysteine codons, inducing ligand-independent RET dimerization, the mutations located in the intracellular tyrosine kinase domain do not target cysteine codons. ('cysteine', 'Chemical', 'MESH:D003545', (219, 227)) ('RET', 'Gene', '5979', (121, 124)) ('inducing', 'Reg', (93, 101)) ('cysteine', 'Chemical', 'MESH:D003545', (76, 84)) ('RET', 'Gene', (121, 124)) ('mutations', 'Var', (13, 22)) ('cysteine', 'Chemical', 'MESH:D003545', (30, 38)) 1790 24449023 These mutations, including S891A, are considered to give rise to structural changes in the protein facilitating the access of adenosine triphosphate and substrate to the catalytic site. ('adenosine triphosphate', 'Chemical', 'MESH:D000255', (126, 148)) ('S891A', 'Mutation', 'rs75234356', (27, 32)) ('S891A', 'Var', (27, 32)) ('access of adenosine triphosphate', 'MPA', (116, 148)) 1791 24449023 The less constitutive RET kinase activation relative to mutations in the cysteine-rich extracellular domain might result in less neoplastic transforming capacity. ('RET', 'Gene', (22, 25)) ('mutations', 'Var', (56, 65)) ('cysteine', 'Chemical', 'MESH:D003545', (73, 81)) ('activation', 'PosReg', (33, 43)) ('neoplastic transforming capacity', 'CPA', (129, 161)) ('RET', 'Gene', '5979', (22, 25)) ('less', 'NegReg', (124, 128)) 1792 24449023 The S891A mutation is classified as level 1 or level A, the lowest risk group among the three (level 1-3) or the four (level A-D) RET codon mutation stratification categories. ('S891A', 'Var', (4, 9)) ('RET', 'Gene', (130, 133)) ('S891A', 'Mutation', 'rs75234356', (4, 9)) ('RET', 'Gene', '5979', (130, 133)) 1793 24449023 The penetrance and aggressiveness of MTC arising in cases with S891A are variable, but MTC develops at a later age and grows more slowly than with the higher risk mutations. ('aggressiveness', 'Phenotype', 'HP:0000718', (19, 33)) ('slowly', 'NegReg', (130, 136)) ('MTC', 'Phenotype', 'HP:0002865', (87, 90)) ('S891A', 'Mutation', 'rs75234356', (63, 68)) ('aggressiveness', 'Disease', 'MESH:D001523', (19, 33)) ('S891A', 'Var', (63, 68)) ('MTC', 'Phenotype', 'HP:0002865', (37, 40)) ('aggressiveness', 'Disease', (19, 33)) 1795 24449023 According to the guidelines, cases with S891A mutation still need prophylactic resection, and some experts recommended thyroidectomy by the age of 5 years, while others suggest that thyroidectomy by the age of 10 years is appropriate with careful follow-up and periodic calcitonin testing. ('thyroidectomy', 'Disease', (119, 132)) ('S891A mutation', 'Var', (40, 54)) ('S891A', 'Mutation', 'rs75234356', (40, 45)) 1801 24449023 Furthermore, this hypothesis implies that the patient with the S891A mutation carried slow-growing C-cell hyperplasia for a long period, during which time the decreased Ca2+ was compensated for by the secondary hyperparathyroidism. ('patient', 'Species', '9606', (46, 53)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (211, 230)) ('hyperparathyroidism', 'Disease', (211, 230)) ('C-cell hyperplasia', 'Disease', (99, 117)) ('secondary hyperparathyroidism', 'Phenotype', 'HP:0000867', (201, 230)) ('S891A', 'Mutation', 'rs75234356', (63, 68)) ('Ca2+', 'Chemical', 'MESH:D000069285', (169, 173)) ('S891A', 'Var', (63, 68)) ('hyperparathyroidism', 'Disease', 'MESH:D006961', (211, 230)) ('C-cell hyperplasia', 'Disease', 'MESH:C537418', (99, 117)) 1802 24449023 These data lend support to the concept that C-cell hyperplasia in the patient with S891A mutation, in spite of its slow growth speed, has a high chance of obtaining another hit for malignant transformation. ('C-cell hyperplasia', 'Disease', 'MESH:C537418', (44, 62)) ('S891A mutation', 'Var', (83, 97)) ('patient', 'Species', '9606', (70, 77)) ('C-cell hyperplasia', 'Disease', (44, 62)) ('slow growth', 'Phenotype', 'HP:0001510', (115, 126)) ('S891A', 'Mutation', 'rs75234356', (83, 88)) 1818 19875067 Although RF ablation is appealing as a minimally invasive targeted therapy for metastatic disease, its role in the treatment of metastatic pheochromocytoma has not been well described to date. ('ablation', 'Var', (12, 20)) ('pheochromocytoma', 'Disease', (139, 155)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (139, 155)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (139, 155)) ('RF', 'Chemical', '-', (9, 11)) ('metastatic', 'Disease', (128, 138)) 1924 20949656 The diagnosis of a pheochromocytoma was confirmed by concentrations of norepinephrine measuring 6109 pg/mL (reference range, 112 to 658) present in the blood with normal values of epinephrine and dopamine. ('norepinephrine', 'Chemical', 'MESH:D009638', (71, 85)) ('epinephrine', 'Chemical', 'MESH:D004837', (74, 85)) ('pheochromocytoma', 'Disease', (19, 35)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (19, 35)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (19, 35)) ('6109 pg/mL', 'Var', (96, 106)) ('epinephrine', 'Chemical', 'MESH:D004837', (180, 191)) ('dopamine', 'Chemical', 'MESH:D004298', (196, 204)) 1983 20842377 Over the past decade, systematic mutation analysis of apparently sporadic cases of pheochromocytomas and paragangliomas has elucidated the frequent presence of germ line mutations in one of five candidate genes, including RET, VHL, SDHB, SDHC, and SDHD. ('SDHD', 'Gene', (248, 252)) ('RET', 'Gene', '5979', (222, 225)) ('paragangliomas', 'Phenotype', 'HP:0002668', (105, 119)) ('RET', 'Gene', (222, 225)) ('SDHB', 'Gene', '6390', (232, 236)) ('mutations', 'Var', (170, 179)) ('VHL', 'Disease', (227, 230)) ('SDHB', 'Gene', (232, 236)) ('VHL', 'Disease', 'MESH:D006623', (227, 230)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (83, 119)) ('SDHC', 'Gene', (238, 242)) ('SDHD', 'Gene', '6392', (248, 252)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (83, 100)) ('paraganglioma', 'Phenotype', 'HP:0002668', (105, 118)) ('SDHC', 'Gene', '6391', (238, 242)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (83, 99)) 1986 20842377 There was no staining of tumour cells with SDHB immunohistochemistry, indicative of an SDH mutation. ('mutation', 'Var', (91, 99)) ('SDH', 'Gene', (43, 46)) ('SDH', 'Gene', '6390', (87, 90)) ('SDHB', 'Gene', '6390', (43, 47)) ('tumour', 'Phenotype', 'HP:0002664', (25, 31)) ('tumour', 'Disease', 'MESH:D009369', (25, 31)) ('SDHB', 'Gene', (43, 47)) ('SDH', 'Gene', '6390', (43, 46)) ('SDH', 'Gene', (87, 90)) ('tumour', 'Disease', (25, 31)) 1987 20842377 Mutation analysis demonstrated a germ line SDHD mutation (p.Val147Met). ('SDHD', 'Gene', '6392', (43, 47)) ('p.Val147Met', 'Mutation', 'p.V147M', (58, 69)) ('p.Val147Met', 'Var', (58, 69)) ('SDHD', 'Gene', (43, 47)) 1998 20842377 Between 12% and 24% of apparently sporadic paragangliomas have been shown over the past decade to have a hereditary basis, involving mutations in one of five different genes: the REarranged during Transfection (RET) proto-oncogene, the von Hippel-Lindau (VHL) gene, and the succinate dehydrogenase subunits B (SDHB), C (SDHC), and D (SDHD) genes,. ('RET', 'Gene', (211, 214)) ('SDHB', 'Gene', '6390', (310, 314)) ('SDHD', 'Gene', (334, 338)) ('paragangliomas', 'Disease', (43, 57)) ('SDHC', 'Gene', '6391', (320, 324)) ('von Hippel-Lindau', 'Gene', (236, 253)) ('SDHB', 'Gene', (310, 314)) ('VHL', 'Disease', (255, 258)) ('REarranged during Transfection', 'Gene', '5979', (179, 209)) ('mutations', 'Var', (133, 142)) ('REarranged during Transfection', 'Gene', (179, 209)) ('von Hippel-Lindau', 'Gene', '7428', (236, 253)) ('RET', 'Gene', '5979', (211, 214)) ('SDHC', 'Gene', (320, 324)) ('paragangliomas', 'Disease', 'MESH:D010235', (43, 57)) ('paraganglioma', 'Phenotype', 'HP:0002668', (43, 56)) ('paragangliomas', 'Phenotype', 'HP:0002668', (43, 57)) ('succinate dehydrogenase subunits B', 'Gene', '6390', (274, 308)) ('VHL', 'Disease', 'MESH:D006623', (255, 258)) ('SDHD', 'Gene', '6392', (334, 338)) ('succinate dehydrogenase subunits B', 'Gene', (274, 308)) 2000 20842377 This was shown to be a useful tool in diagnosing paraganglioma patients with SDHx mutations; negative immunostaining was seen in paragangliomas with SDHx mutations, whereas paragangliomas without mutations are positive with SDHB immunohistochemistry. ('paraganglioma', 'Disease', (173, 186)) ('paragangliomas', 'Phenotype', 'HP:0002668', (129, 143)) ('SDHx', 'Gene', (77, 81)) ('paraganglioma', 'Disease', 'MESH:D010235', (173, 186)) ('paraganglioma', 'Phenotype', 'HP:0002668', (49, 62)) ('SDHx', 'Chemical', '-', (149, 153)) ('paraganglioma', 'Disease', (129, 142)) ('SDHx', 'Chemical', '-', (77, 81)) ('paragangliomas', 'Disease', 'MESH:D010235', (173, 187)) ('paraganglioma', 'Disease', 'MESH:D010235', (129, 142)) ('paraganglioma', 'Phenotype', 'HP:0002668', (173, 186)) ('paragangliomas', 'Phenotype', 'HP:0002668', (173, 187)) ('paragangliomas', 'Disease', (129, 143)) ('SDHB', 'Gene', '6390', (224, 228)) ('paraganglioma', 'Disease', (49, 62)) ('paraganglioma', 'Phenotype', 'HP:0002668', (129, 142)) ('paraganglioma', 'Disease', 'MESH:D010235', (49, 62)) ('mutations', 'Var', (154, 163)) ('paragangliomas', 'Disease', (173, 187)) ('mutations', 'Var', (82, 91)) ('patients', 'Species', '9606', (63, 71)) ('SDHB', 'Gene', (224, 228)) ('SDHx', 'Gene', (149, 153)) ('paragangliomas', 'Disease', 'MESH:D010235', (129, 143)) 2001 20842377 In this spermatic cord sympathetic paraganglioma, the negative immunostaining gave an important clue for the presence of an SDHx mutation, which was subsequently shown to be a previously unknown germ line SDHD mutation. ('SDHD', 'Gene', (205, 209)) ('mutation', 'Var', (129, 137)) ('paraganglioma', 'Disease', 'MESH:D010235', (35, 48)) ('paraganglioma', 'Phenotype', 'HP:0002668', (35, 48)) ('SDHx', 'Gene', (124, 128)) ('SDHx', 'Chemical', '-', (124, 128)) ('SDHD', 'Gene', '6392', (205, 209)) ('paraganglioma', 'Disease', (35, 48)) 2020 20842377 The mutation analysis that was performed by direct sequencing, on tumour tissue of this patient, showed an SDHD mutation in exon 4 (c.439 G T, p.Val147Met) (Fig. ('patient', 'Species', '9606', (88, 95)) ('SDHD', 'Gene', (107, 111)) ('p.Val147Met', 'Mutation', 'p.V147M', (143, 154)) ('tumour', 'Phenotype', 'HP:0002664', (66, 72)) ('c.439 G T', 'Var', (132, 141)) ('tumour', 'Disease', 'MESH:D009369', (66, 72)) ('tumour', 'Disease', (66, 72)) ('SDHD', 'Gene', '6392', (107, 111)) ('p.Val147Met', 'Var', (143, 154)) 2022 20842377 Because of negative immunostaining, an SDHx mutation was predicted and eventually shown to be a p.Val147Met SDHD mutation. ('SDHD', 'Gene', '6392', (108, 112)) ('mutation', 'Var', (44, 52)) ('SDHx', 'Chemical', '-', (39, 43)) ('p.Val147Met', 'Mutation', 'p.V147M', (96, 107)) ('p.Val147Met', 'Var', (96, 107)) ('SDHx', 'Gene', (39, 43)) ('SDHD', 'Gene', (108, 112)) 2031 20842377 The finding of this mutation has important implications for further patient management, as it is known that patients with SDHD germ line mutations are at increased risk to develop further paragangliomas, either abdominal or head and neck, or even pheochromocytomas. ('abdominal', 'Disease', (211, 220)) ('develop', 'PosReg', (172, 179)) ('paraganglioma', 'Phenotype', 'HP:0002668', (188, 201)) ('patient', 'Species', '9606', (68, 75)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (247, 264)) ('paragangliomas', 'Phenotype', 'HP:0002668', (188, 202)) ('pheochromocytomas', 'Disease', (247, 264)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (247, 263)) ('mutations', 'Var', (137, 146)) ('SDHD', 'Gene', (122, 126)) ('SDHD', 'Gene', '6392', (122, 126)) ('paragangliomas', 'Disease', 'MESH:D010235', (188, 202)) ('patient', 'Species', '9606', (108, 115)) ('patients', 'Species', '9606', (108, 116)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (247, 264)) ('man', 'Species', '9606', (76, 79)) ('men', 'Species', '9606', (82, 85)) ('paragangliomas', 'Disease', (188, 202)) 2074 20951316 MEN1 gene mutations have been identified in 80-90% of the MEN-1 cases. ('MEN1', 'Gene', '4221', (0, 4)) ('MEN-1', 'Gene', '4221', (58, 63)) ('MEN-1', 'Gene', (58, 63)) ('mutations', 'Var', (10, 19)) ('MEN1', 'Gene', (0, 4)) 2081 20951316 Variants of MEN2 include familial MTC (FMTC), MEN2A or FMTC with Hirshsprung's disease and MEN2A with cutaneous lichen amyloidosis. ('MEN2', 'Gene', (12, 16)) ('Variants', 'Var', (0, 8)) ('cutaneous lichen amyloidosis', 'Phenotype', 'HP:0032346', (102, 130)) ('MTC', 'Phenotype', 'HP:0002865', (56, 59)) ('amyloidosis', 'Phenotype', 'HP:0011034', (119, 130)) ("Hirshsprung's disease", 'Disease', 'MESH:D010300', (65, 86)) ('MEN', 'Species', '9606', (46, 49)) ('MEN2A', 'Gene', (91, 96)) ('MEN2A', 'Gene', '5979', (91, 96)) ('familial MTC', 'Disease', (25, 37)) ('cutaneous lichen amyloidosis', 'Disease', (102, 130)) ('MEN', 'Species', '9606', (12, 15)) ('MEN', 'Species', '9606', (91, 94)) ('cutaneous lichen amyloidosis', 'Disease', 'MESH:C562643', (102, 130)) ('MTC', 'Phenotype', 'HP:0002865', (34, 37)) ("Hirshsprung's disease", 'Phenotype', 'HP:0002251', (65, 86)) ("Hirshsprung's disease", 'Disease', (65, 86)) ('MEN2A', 'Gene', (46, 51)) ('MEN2A', 'Gene', '5979', (46, 51)) ('MTC', 'Phenotype', 'HP:0002865', (40, 43)) 2089 20951316 RET activation can be caused by RET homodimerization in most MEN2A mutations or by RET kinase enzyme's catalytic site activation in MEN2B. ('MEN2A', 'Gene', (61, 66)) ('RET', 'Gene', '5979', (0, 3)) ('MEN2A', 'Gene', '5979', (61, 66)) ('RET', 'Gene', '5979', (83, 86)) ('mutations', 'Var', (67, 76)) ('catalytic site activation', 'MPA', (103, 128)) ('RET', 'Gene', (0, 3)) ('RET', 'Gene', '5979', (32, 35)) ('MEN2B', 'Gene', (132, 137)) ('RET', 'Gene', (83, 86)) ('MEN2B', 'Gene', '5979', (132, 137)) ('homodimerization', 'MPA', (36, 52)) ('activation', 'PosReg', (4, 14)) ('RET', 'Gene', (32, 35)) 2090 20951316 RET mutations lead to the activation of major intracellular oncogenic pathways, such as RAS/ERK, PI3K/AKT, nuclear factor kB (NFkB) and JUN kinase pathways. ('RET', 'Gene', '5979', (0, 3)) ('JUN kinase pathways', 'Pathway', (136, 155)) ('oncogenic pathways', 'Pathway', (60, 78)) ('RET', 'Gene', (0, 3)) ('activation', 'PosReg', (26, 36)) ('AKT', 'Gene', '207', (102, 105)) ('ERK', 'Gene', (92, 95)) ('ERK', 'Gene', '2048', (92, 95)) ('mutations', 'Var', (4, 13)) ('AKT', 'Gene', (102, 105)) 2092 20951316 The clinical behavior of MTC correlates with the type of MEN2 syndrome and with the mutated RET codon. ('MTC', 'Phenotype', 'HP:0002865', (25, 28)) ('RET', 'Gene', '5979', (92, 95)) ('RET', 'Gene', (92, 95)) ('mutated', 'Var', (84, 91)) ('MEN2 syndrome', 'Disease', (57, 70)) ('MEN2 syndrome', 'Disease', 'MESH:D013577', (57, 70)) 2098 20951316 Patients with specific germ-line RET mutations are stratified into specific risk groups based on reported age of onset and aggressiveness of the disease. ('aggressiveness of the disease', 'Disease', 'MESH:D001523', (123, 152)) ('RET', 'Gene', (33, 36)) ('aggressiveness of the disease', 'Disease', (123, 152)) ('mutations', 'Var', (37, 46)) ('rat', 'Species', '10116', (53, 56)) ('Patients', 'Species', '9606', (0, 8)) ('RET', 'Gene', '5979', (33, 36)) ('aggressiveness', 'Phenotype', 'HP:0000718', (123, 137)) 2101 20951316 Individuals with MEN 2A mutations (codons 611, 618, 620, and 634) are considered high risk (level II) and should have thyroidectomy performed before 5 years of age. ('MEN 2A', 'Gene', (17, 23)) ('MEN 2A', 'Gene', '5979', (17, 23)) ('codons 611', 'Var', (35, 45)) 2102 20951316 Although RET codon 609, 768, 790, 791, 804 and 891 mutations are classified as level I or having the lowest risk among the three groups of RET mutations, the level I individuals should also undergo thyroidectomy by the age of 5 years. ('RET', 'Gene', (139, 142)) ('mutations', 'Var', (51, 60)) ('RET', 'Gene', '5979', (9, 12)) ('thyroidectomy', 'Disease', (198, 211)) ('RET', 'Gene', '5979', (139, 142)) ('RET', 'Gene', (9, 12)) ('undergo', 'Reg', (190, 197)) 2106 20951316 Hereditary etiologies of pheochromocytoma include: MEN2A and MEN2B caused by RET mutations; von Hippel-Lindau disease caused by VHL gene mutations; mutations of the NF1 gene, responsible for neurofibromatosis; and familial paraganglioma syndromes caused by mutations in subunits B, C or D of the succinate dehydrogenase (SDH) complex (Table 3). ('MEN2B', 'Gene', '5979', (61, 66)) ('mutations', 'Var', (257, 266)) ('VHL', 'Gene', '7428', (128, 131)) ('SDH', 'Gene', (321, 324)) ('succinate dehydrogenase', 'Gene', (296, 319)) ('paraganglioma', 'Phenotype', 'HP:0002668', (223, 236)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (191, 208)) ('von Hippel-Lindau disease', 'Disease', (92, 117)) ('mutations', 'Var', (81, 90)) ('familial paraganglioma syndromes', 'Disease', (214, 246)) ('NF1', 'Gene', '4763', (165, 168)) ('familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (214, 246)) ('neurofibromatosis', 'Disease', 'MESH:C537392', (191, 208)) ('RET', 'Gene', '5979', (77, 80)) ('caused by', 'Reg', (247, 256)) ('NF1', 'Gene', (165, 168)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (25, 41)) ('mutations', 'Var', (148, 157)) ('neurofibromatosis', 'Disease', (191, 208)) ('succinate dehydrogenase', 'Gene', '6390', (296, 319)) ('MEN2A', 'Gene', (51, 56)) ('MEN2A', 'Gene', '5979', (51, 56)) ('SDH', 'Gene', '6390', (321, 324)) ('pheochromocytoma', 'Disease', (25, 41)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (25, 41)) ('VHL', 'Gene', (128, 131)) ('RET', 'Gene', (77, 80)) ('caused by', 'Reg', (118, 127)) ('mutations', 'Var', (137, 146)) ('caused', 'Reg', (67, 73)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (92, 117)) ('MEN2B', 'Gene', (61, 66)) 2107 20951316 Germline mutations in the susceptibility genes for pheochromocytoma can also be found in about 25% of the non-syndromic cases. ('Germline mutations', 'Var', (0, 18)) ('found', 'Reg', (80, 85)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (51, 67)) ('pheochromocytoma', 'Disease', (51, 67)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (51, 67)) 2108 20951316 Therefore, genetic screening for mutations of RET, VHL, SDHD and SDHB is indicated to identify pheochromocytoma-related syndromes in non-familial cases. ('SDHD', 'Gene', (56, 60)) ('SDHD', 'Gene', '6392', (56, 60)) ('VHL', 'Gene', '7428', (51, 54)) ('pheochromocytoma', 'Disease', (95, 111)) ('mutations', 'Var', (33, 42)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (95, 111)) ('SDHB', 'Gene', (65, 69)) ('RET', 'Gene', '5979', (46, 49)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (95, 111)) ('SDHB', 'Gene', '6390', (65, 69)) ('VHL', 'Gene', (51, 54)) ('RET', 'Gene', (46, 49)) 2109 20951316 found 19% of germline mutations in 989 apparently nonsyndromic pheochromocytoma cases. ('pheochromocytoma', 'Disease', (63, 79)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (63, 79)) ('germline mutations', 'Var', (13, 31)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (63, 79)) 2110 20951316 Predictors for presence of mutation are age < 45 years, multiple pheochromocytoma, extra-adrenal location, and previous head and neck paraganglioma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (65, 81)) ('extra-adrenal location', 'Disease', (83, 105)) ('paraganglioma', 'Phenotype', 'HP:0002668', (134, 147)) ('neck paraganglioma', 'Disease', (129, 147)) ('mutation', 'Var', (27, 35)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (120, 147)) ('multiple pheochromocytoma', 'Disease', 'MESH:D010673', (56, 81)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (129, 147)) ('multiple pheochromocytoma', 'Disease', (56, 81)) 2112 20951316 The diagnosis of head and neck paragangliomas is highly suggestive of SDHD mutations. ('SDHD', 'Gene', (70, 74)) ('SDHD', 'Gene', '6392', (70, 74)) ('neck paragangliomas', 'Disease', (26, 45)) ('paragangliomas', 'Phenotype', 'HP:0002668', (31, 45)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (17, 45)) ('paraganglioma', 'Phenotype', 'HP:0002668', (31, 44)) ('mutations', 'Var', (75, 84)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (26, 45)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (17, 44)) 2115 20951316 Pheochromocytoma has been found in kindreds with all RET mutations except those in codons 609, 768, 804 and 891. ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('RET', 'Gene', (53, 56)) ('Pheochromocytoma', 'Disease', (0, 16)) ('found', 'Reg', (26, 31)) ('mutations', 'Var', (57, 66)) ('RET', 'Gene', '5979', (53, 56)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) 2116 20951316 In addition, pheochromocytomas have been identified with codon 634 mutations as early as 5 and 10 years of age. ('pheochromocytomas', 'Disease', (13, 30)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (13, 30)) ('codon 634 mutations', 'Var', (57, 76)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (13, 29)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (13, 30)) 2117 20951316 VHL disease arises from de novo mutations without a family history in 20% of the cases. ('VHL disease', 'Disease', 'MESH:D006623', (0, 11)) ('VHL disease', 'Disease', (0, 11)) ('mutations', 'Var', (32, 41)) 2135 20951316 Paraganglioma syndromes are caused by mutations in the SDH genes: paraganglioma syndrome type 1 (SDHD), paraganglioma syndrome type 3 (SDHC), paraganglioma syndrome type 4 (SDHB). ('paraganglioma syndrome', 'Disease', (104, 126)) ('SDH', 'Gene', '6390', (97, 100)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (66, 88)) ('paraganglioma', 'Phenotype', 'HP:0002668', (142, 155)) ('paraganglioma', 'Phenotype', 'HP:0002668', (104, 117)) ('SDH', 'Gene', '6390', (55, 58)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (142, 164)) ('SDHB', 'Gene', '6390', (173, 177)) ('SDH', 'Gene', '6390', (173, 176)) ('Paraganglioma syndromes', 'Disease', (0, 23)) ('SDH', 'Gene', '6390', (135, 138)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (104, 126)) ('SDH', 'Gene', (97, 100)) ('mutations', 'Var', (38, 47)) ('SDHC', 'Gene', (135, 139)) ('paraganglioma syndrome type 1 (SDHD), paraganglioma syndrome', 'Disease', 'MESH:D010235', (66, 126)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('SDHC', 'Gene', '6391', (135, 139)) ('Paraganglioma syndromes', 'Disease', 'MESH:D010235', (0, 23)) ('SDHB', 'Gene', (173, 177)) ('SDH', 'Gene', (55, 58)) ('SDH', 'Gene', (173, 176)) ('SDH', 'Gene', (135, 138)) ('paraganglioma syndrome', 'Disease', (66, 88)) ('paraganglioma', 'Phenotype', 'HP:0002668', (66, 79)) ('caused by', 'Reg', (28, 37)) ('paraganglioma syndrome', 'Disease', (142, 164)) 2136 20951316 Hereditary head and neck paragangliomas are most exclusively caused with germline SDHB, SDHC and SDHD mutations. ('neck paragangliomas', 'Disease', 'MESH:D010235', (20, 39)) ('SDHD', 'Gene', (97, 101)) ('SDHB', 'Gene', '6390', (82, 86)) ('paragangliomas', 'Phenotype', 'HP:0002668', (25, 39)) ('paraganglioma', 'Phenotype', 'HP:0002668', (25, 38)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (11, 39)) ('SDHB', 'Gene', (82, 86)) ('mutations', 'Var', (102, 111)) ('neck paragangliomas', 'Disease', (20, 39)) ('caused', 'Reg', (61, 67)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (11, 38)) ('SDHC', 'Gene', (88, 92)) ('SDHD', 'Gene', '6392', (97, 101)) ('SDHC', 'Gene', '6391', (88, 92)) 2138 20951316 Germline SDHC mutations are a very rare cause of pheochromocytomas. ('cause', 'Reg', (40, 45)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (49, 66)) ('pheochromocytomas', 'Disease', (49, 66)) ('SDHC', 'Gene', (9, 13)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (49, 66)) ('mutations', 'Var', (14, 23)) ('SDHC', 'Gene', '6391', (9, 13)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (49, 65)) 2139 20951316 Mutations of the SDHB gene are more frequently associated with malignant disease. ('malignant disease', 'Disease', 'MESH:D009369', (63, 80)) ('SDHB', 'Gene', '6390', (17, 21)) ('malignant disease', 'Disease', (63, 80)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (17, 21)) ('associated', 'Reg', (47, 57)) 2140 20951316 Recently, germline SDHB, SDHC and SDHD mutations were identified in patients with both gastrointestinal stromal tumors and paragangliomas. ('SDHC', 'Gene', '6391', (25, 29)) ('SDHD', 'Gene', (34, 38)) ('paragangliomas', 'Disease', (123, 137)) ('mutations', 'Var', (39, 48)) ('patients', 'Species', '9606', (68, 76)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (87, 117)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (87, 118)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (87, 118)) ('SDHB', 'Gene', '6390', (19, 23)) ('SDHC', 'Gene', (25, 29)) ('identified', 'Reg', (54, 64)) ('tumors', 'Phenotype', 'HP:0002664', (112, 118)) ('paragangliomas', 'Disease', 'MESH:D010235', (123, 137)) ('paraganglioma', 'Phenotype', 'HP:0002668', (123, 136)) ('gastrointestinal stromal tumors', 'Disease', (87, 118)) ('paragangliomas', 'Phenotype', 'HP:0002668', (123, 137)) ('SDHB', 'Gene', (19, 23)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('SDHD', 'Gene', '6392', (34, 38)) 2142 20951316 Germline SDHB, SDHC, and SDHD mutations were associated with familial gastrointestinal stromal tumors, but abdominal paragangliomas associated with gastrointestinal tumors were exclusively caused by SDHC mutations. ('SDHB', 'Gene', (9, 13)) ('SDHC', 'Gene', (15, 19)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('tumor', 'Phenotype', 'HP:0002664', (165, 170)) ('SDHD', 'Gene', (25, 29)) ('abdominal paragangliomas', 'Disease', 'MESH:D010235', (107, 131)) ('abdominal paragangliomas', 'Disease', (107, 131)) ('tumors', 'Phenotype', 'HP:0002664', (165, 171)) ('paragangliomas', 'Phenotype', 'HP:0002668', (117, 131)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (70, 101)) ('paraganglioma', 'Phenotype', 'HP:0002668', (117, 130)) ('SDHC', 'Gene', '6391', (199, 203)) ('gastrointestinal tumors', 'Disease', 'MESH:D004067', (148, 171)) ('SDHC', 'Gene', '6391', (15, 19)) ('familial gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (61, 101)) ('mutations', 'Var', (204, 213)) ('associated', 'Reg', (45, 55)) ('mutations', 'Var', (30, 39)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (70, 100)) ('SDHB', 'Gene', '6390', (9, 13)) ('caused', 'Reg', (189, 195)) ('SDHC', 'Gene', (199, 203)) ('familial gastrointestinal stromal tumors', 'Disease', (61, 101)) ('SDHD', 'Gene', '6392', (25, 29)) ('gastrointestinal tumors', 'Disease', (148, 171)) ('gastrointestinal tumors', 'Phenotype', 'HP:0007378', (148, 171)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) 2158 20951316 Inactivating mutations of the PRKAR1A gene coding for the regulatory type I-alpha (RIalpha) subunit of protein kinase A (PKA) are responsible for the disease in most CNC patients. ('patients', 'Species', '9606', (170, 178)) ('PRKAR1A', 'Gene', (30, 37)) ('responsible', 'Reg', (130, 141)) ('Inactivating mutations', 'Var', (0, 22)) ('PRKAR1A', 'Gene', '5573', (30, 37)) ('CNC', 'Disease', (166, 169)) 2159 20951316 The overall penetrance of CNC among PRKAR1A mutation carriers is near 98%. ('PRKAR1A', 'Gene', (36, 43)) ('mutation', 'Var', (44, 52)) ('CNC', 'Disease', (26, 29)) ('PRKAR1A', 'Gene', '5573', (36, 43)) 2160 20951316 Most PRKAR1A mutations result in premature stop codon generation and lead to nonsense-mediated mRNA decay. ('PRKAR1A', 'Gene', (5, 12)) ('premature stop codon generation', 'MPA', (33, 64)) ('result in', 'Reg', (23, 32)) ('PRKAR1A', 'Gene', '5573', (5, 12)) ('lead to', 'Reg', (69, 76)) ('rat', 'Species', '10116', (58, 61)) ('nonsense-mediated mRNA decay', 'MPA', (77, 105)) ('mutations', 'Var', (13, 22)) 2161 20951316 Phosphodiesterase-11A (the PDE11A gene) and -8B (the PDE8B gene) mutations were found in patients with isolated adrenal hyperplasia and Cushing syndrome, as well in patients with PPNAD. ('found', 'Reg', (80, 85)) ('PPNAD', 'Disease', (179, 184)) ('Cushing syndrome', 'Phenotype', 'HP:0003118', (136, 152)) ('Phosphodiesterase-11A', 'Gene', (0, 21)) ('PDE11A gene) and -8B', 'Gene', '8622', (27, 47)) ('isolated adrenal hyperplasia', 'Disease', 'MESH:C537027', (103, 131)) ('PPNAD', 'Chemical', '-', (179, 184)) ('Cushing syndrome', 'Disease', (136, 152)) ('patients', 'Species', '9606', (89, 97)) ('patients', 'Species', '9606', (165, 173)) ('PDE8B', 'Gene', '8622', (53, 58)) ('isolated adrenal hyperplasia', 'Disease', (103, 131)) ('Phosphodiesterase-11A', 'Gene', '50940', (0, 21)) ('PDE8B', 'Gene', (53, 58)) ('Cushing syndrome', 'Disease', 'MESH:D003480', (136, 152)) ('adrenal hyperplasia', 'Phenotype', 'HP:0008221', (112, 131)) ('mutations', 'Var', (65, 74)) 2165 20951316 VHL, RET, SDHD and SDHB mutations should also be screened in non-familial cases of pheochromocytomas and paragangliomas. ('paragangliomas', 'Phenotype', 'HP:0002668', (105, 119)) ('SDHB', 'Gene', '6390', (19, 23)) ('RET', 'Gene', (5, 8)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (83, 119)) ('SDHB', 'Gene', (19, 23)) ('VHL', 'Gene', (0, 3)) ('RET', 'Gene', '5979', (5, 8)) ('SDHD', 'Gene', (10, 14)) ('SDHD', 'Gene', '6392', (10, 14)) ('screened', 'Reg', (49, 57)) ('mutations', 'Var', (24, 33)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (83, 100)) ('paraganglioma', 'Phenotype', 'HP:0002668', (105, 118)) ('VHL', 'Gene', '7428', (0, 3)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (83, 99)) 2194 33677926 Genomic instability such as DNA hypomethylation and chromosomal instability was associated with POU1F1/PIT1 lineage differentiation. ('PIT1', 'Gene', (103, 107)) ('DNA hypomethylation', 'Var', (28, 47)) ('chromosomal', 'CPA', (52, 63)) ('PIT1', 'Gene', '5449', (103, 107)) ('chromosomal instability', 'Phenotype', 'HP:0040012', (52, 75)) ('POU1F1', 'Gene', '5449', (96, 102)) ('associated', 'Reg', (80, 90)) ('POU1F1', 'Gene', (96, 102)) 2198 33677926 A somatic hotspot mutation in splicing factor 3 subunit B1 (SFB1R625H) was discovered by whole-genome sequencing in 21 patients with prolactinoma and validated by digital polymerase chain reaction in 227 prolactinomas. ('prolactinomas', 'Disease', (204, 217)) ('prolactinoma', 'Disease', (204, 216)) ('prolactinoma', 'Phenotype', 'HP:0040278', (204, 216)) ('prolactinoma', 'Disease', (133, 145)) ('patients', 'Species', '9606', (119, 127)) ('prolactinoma', 'Disease', 'MESH:D015175', (204, 216)) ('prolactinoma', 'Disease', 'MESH:D015175', (133, 145)) ('prolactinoma', 'Phenotype', 'HP:0040278', (133, 145)) ('prolactinomas', 'Disease', 'MESH:D015175', (204, 217)) ('hotspot', 'PosReg', (10, 17)) ('mutation', 'Var', (18, 26)) ('SFB1R625H', 'Gene', (60, 69)) 2363 32824391 Eleven patients were included in this trial, four (36%) with germline mutations and seven (64%) with hormonally active tumors. ('tumors', 'Phenotype', 'HP:0002664', (119, 125)) ('tumors', 'Disease', 'MESH:D009369', (119, 125)) ('tumors', 'Disease', (119, 125)) ('germline mutations', 'Var', (61, 79)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('patients', 'Species', '9606', (7, 15)) 2394 32824391 These mutations predispose patients to tumor pseudohypoxia, abnormal tumor cell replication, and tumor necrosis and angiogenesis and may prevent immune system recognition. ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('abnormal tumor', 'Disease', 'MESH:D009369', (60, 74)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('prevent', 'NegReg', (137, 144)) ('abnormal tumor', 'Phenotype', 'HP:0002664', (60, 74)) ('angiogenesis', 'CPA', (116, 128)) ('predispose', 'Reg', (16, 26)) ('tumor pseudohypoxia', 'Disease', (39, 58)) ('patients', 'Species', '9606', (27, 35)) ('tumor necrosis', 'Disease', 'MESH:D009336', (97, 111)) ('tumor pseudohypoxia', 'Disease', 'MESH:D009369', (39, 58)) ('abnormal tumor', 'Disease', (60, 74)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('tumor necrosis', 'Disease', (97, 111)) ('mutations', 'Var', (6, 15)) 2396 32824391 Deregulation of cellular energetics is a universal hallmark of cancer that interferes with T cell effector function, causes immune suppression and tolerance, impairs tumor infiltration by T cells, and induces resistance to cytotoxic T cells. ('tumor', 'Phenotype', 'HP:0002664', (166, 171)) ('Deregulation', 'Var', (0, 12)) ('cancer', 'Phenotype', 'HP:0002664', (63, 69)) ('cancer', 'Disease', 'MESH:D009369', (63, 69)) ('immune suppression', 'CPA', (124, 142)) ('impairs tumor', 'Disease', (158, 171)) ('cellular energetics', 'MPA', (16, 35)) ('resistance to cytotoxic T cells', 'CPA', (209, 240)) ('T cell effector function', 'CPA', (91, 115)) ('causes', 'Reg', (117, 123)) ('tolerance', 'CPA', (147, 156)) ('interferes', 'NegReg', (75, 85)) ('induces', 'Reg', (201, 208)) ('cancer', 'Disease', (63, 69)) ('impairs tumor', 'Disease', 'MESH:D060825', (158, 171)) 2412 32824391 Although the expression of PDL-1 in patients with non-small cell lung cancer is typically associated with a positive immunological response, this association is not clear in patients with other cancers. ('lung cancer', 'Disease', 'MESH:D008175', (65, 76)) ('cancers', 'Phenotype', 'HP:0002664', (194, 201)) ('patients', 'Species', '9606', (36, 44)) ('cancer', 'Phenotype', 'HP:0002664', (70, 76)) ('PDL-1', 'Gene', '29126', (27, 32)) ('cancers', 'Disease', 'MESH:D009369', (194, 201)) ('lung cancer', 'Disease', (65, 76)) ('associated', 'Reg', (90, 100)) ('expression', 'Var', (13, 23)) ('cancers', 'Disease', (194, 201)) ('patients', 'Species', '9606', (174, 182)) ('lung cancer', 'Phenotype', 'HP:0100526', (65, 76)) ('cancer', 'Phenotype', 'HP:0002664', (194, 200)) ('PDL-1', 'Gene', (27, 32)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (54, 76)) ('non-small cell lung cancer', 'Phenotype', 'HP:0030358', (50, 76)) 2453 32824391 Four patients (36%) had a germline mutation; two had paraganglioma syndrome type 4 (SDHB), one had a paraganglioma syndrome type 1 (SDHD), and one had Lynch syndrome (PMS2). ('PMS2', 'Gene', '5395', (167, 171)) ('paraganglioma syndrome', 'Disease', (101, 123)) ('Lynch syndrome', 'Disease', (151, 165)) ('SDHD', 'Gene', (132, 136)) ('patients', 'Species', '9606', (5, 13)) ('SDHB', 'Gene', '6390', (84, 88)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (151, 165)) ('paraganglioma syndrome', 'Disease', (53, 75)) ('germline mutation', 'Var', (26, 43)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (101, 123)) ('SDHB', 'Gene', (84, 88)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (53, 75)) ('paraganglioma', 'Phenotype', 'HP:0002668', (101, 114)) ('SDHD', 'Gene', '6392', (132, 136)) ('PMS2', 'Gene', (167, 171)) ('paraganglioma', 'Phenotype', 'HP:0002668', (53, 66)) 2480 32824391 One patient with a metastatic head and neck paraganglioma that was associated with a germline SDHD mutation experienced SD for 24 months; during the last month of therapy with pembrolizumab, the patient developed a pathologic fracture of the spine that was related to tumor progression. ('paraganglioma', 'Phenotype', 'HP:0002668', (44, 57)) ('SDHD', 'Gene', (94, 98)) ('developed', 'PosReg', (203, 212)) ('neck paraganglioma', 'Disease', (39, 57)) ('tumor', 'Phenotype', 'HP:0002664', (268, 273)) ('pembrolizumab', 'Chemical', 'MESH:C582435', (176, 189)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (39, 57)) ('patient', 'Species', '9606', (195, 202)) ('tumor', 'Disease', (268, 273)) ('patient', 'Species', '9606', (4, 11)) ('pathologic fracture', 'Phenotype', 'HP:0002756', (215, 234)) ('mutation', 'Var', (99, 107)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (30, 57)) ('associated', 'Reg', (67, 77)) ('SDHD', 'Gene', '6392', (94, 98)) ('tumor', 'Disease', 'MESH:D009369', (268, 273)) 2518 32824391 The second patient carried an SDHB germline mutation and was treated with antibiotics for severe hand and foot syndrome that was complicated by an infection with Pseudomona aeruginosa. ('infection', 'Disease', (147, 156)) ('foot syndrome', 'Disease', 'MESH:D005534', (106, 119)) ('infection', 'Disease', 'MESH:D007239', (147, 156)) ('germline', 'Var', (35, 43)) ('patient', 'Species', '9606', (11, 18)) ('SDHB', 'Gene', '6390', (30, 34)) ('SDHB', 'Gene', (30, 34)) ('foot syndrome', 'Disease', (106, 119)) 2529 32824391 MPPGs are associated with the highest rate of single germline mutations of any oncological disease; however, they have some of the lowest rates of somatic mutations among malignancies. ('malignancies', 'Disease', 'MESH:D009369', (171, 183)) ('MPPGs', 'Chemical', '-', (0, 5)) ('malignancies', 'Disease', (171, 183)) ('single germline mutations', 'Var', (46, 71)) ('MPPGs', 'Gene', (0, 5)) ('oncological disease', 'Phenotype', 'HP:0002664', (79, 98)) 2533 32824391 Previous analyses may have been performed in non-metastatic tumors; nevertheless, the presence of TILs does not seem to be predictive of the primary tumor's metastatic potential or response to pembrolizumab. ('presence', 'Var', (86, 94)) ('primary tumor', 'Disease', (141, 154)) ('tumor', 'Phenotype', 'HP:0002664', (149, 154)) ('pembrolizumab', 'Chemical', 'MESH:C582435', (193, 206)) ('tumors', 'Disease', 'MESH:D009369', (60, 66)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('metastatic potential', 'CPA', (157, 177)) ('primary tumor', 'Disease', 'MESH:D001932', (141, 154)) ('tumors', 'Phenotype', 'HP:0002664', (60, 66)) ('tumors', 'Disease', (60, 66)) 2684 31196171 Aberrant methylation-mediated downregulation of lncRNA SSTR5-AS1 promotes progression and metastasis of laryngeal squamous cell carcinoma Laryngeal squamous cell carcinoma (LSCC) is among the most common malignant tumors with poor prognosis. ('progression', 'CPA', (74, 85)) ('malignant tumors', 'Disease', 'MESH:D018198', (204, 220)) ('tumor', 'Phenotype', 'HP:0002664', (214, 219)) ('metastasis of laryngeal squamous cell carcinoma', 'Disease', 'MESH:D002294', (90, 137)) ('Aberrant methylation-mediated', 'Var', (0, 29)) ('Laryngeal squamous cell carcinoma', 'Disease', (138, 171)) ('malignant tumors', 'Disease', (204, 220)) ('metastasis of laryngeal squamous cell carcinoma', 'Disease', (90, 137)) ('downregulation', 'NegReg', (30, 44)) ('carcinoma', 'Phenotype', 'HP:0030731', (128, 137)) ('carcinoma Laryngeal squamous cell carcinoma', 'Phenotype', 'HP:0012118', (128, 171)) ('SSTR5-AS1', 'Gene', (55, 64)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (148, 171)) ('promotes', 'PosReg', (65, 73)) ('methylation-mediated', 'Var', (9, 29)) ('carcinoma', 'Phenotype', 'HP:0030731', (162, 171)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (114, 137)) ('tumors', 'Phenotype', 'HP:0002664', (214, 220)) ('Laryngeal squamous cell carcinoma', 'Disease', 'MESH:D002294', (138, 171)) ('SSTR5-AS1', 'Gene', '146336;6755;5729', (55, 64)) 2713 31196171 There are two transcripts of SSTR5, and the main transcript (NM_001053) is located at chr16: 1078781-1081454 (GRCh38/hg38). ('SSTR5', 'Gene', '6755', (29, 34)) ('SSTR5', 'Gene', (29, 34)) ('hg38', 'Gene', (117, 121)) ('hg38', 'Gene', '8549', (117, 121)) ('NM_001053', 'Var', (61, 70)) 2732 31196171 3b, c, the expression levels of SSTR5 and SSTR5-AS1 were significantly increased in the 5-Aza-dC-, TSA-, 5-Aza-dC/TSA-treated laryngeal carcinoma cells, and the effect was more apparent in the 5-Aza-dC/TSA-treated cells, indicating that the expression of SSTR5 and SSTR5-AS1 might be co-regulated by DNA methylation and histone modification. ('SSTR5', 'Gene', (255, 260)) ('SSTR5', 'Gene', (32, 37)) ('carcinoma', 'Phenotype', 'HP:0030731', (136, 145)) ('SSTR5', 'Gene', '6755', (255, 260)) ('5-Aza-dC-', 'Var', (88, 97)) ('TSA', 'Chemical', 'MESH:C012589', (99, 102)) ('SSTR5', 'Gene', '6755', (32, 37)) ('TSA', 'Chemical', 'MESH:C012589', (202, 205)) ('laryngeal carcinoma', 'Disease', (126, 145)) ('5-Aza-dC/TSA-treated', 'Var', (105, 125)) ('TSA', 'Chemical', 'MESH:C012589', (114, 117)) ('5-Aza-dC', 'Chemical', 'MESH:D000077209', (193, 201)) ('TSA-', 'Var', (99, 103)) ('5-Aza-dC', 'Chemical', 'MESH:D000077209', (105, 113)) ('laryngeal carcinoma', 'Phenotype', 'HP:0012118', (126, 145)) ('SSTR5', 'Gene', (42, 47)) ('SSTR5', 'Gene', (265, 270)) ('5-Aza-dC', 'Chemical', 'MESH:D000077209', (88, 96)) ('expression levels', 'MPA', (11, 28)) ('SSTR5', 'Gene', '6755', (42, 47)) ('laryngeal carcinoma', 'Disease', 'MESH:D007827', (126, 145)) ('increased', 'PosReg', (71, 80)) ('SSTR5', 'Gene', '6755', (265, 270)) 2734 31196171 3d, frequent CpG sites methylation was observed in the exon 1 region of SSTR5, while frequent methylated CpG sites were located in the promoter region of SSTR5-AS1 (Fig. ('methylation', 'Var', (23, 34)) ('SSTR5', 'Gene', '6755', (154, 159)) ('SSTR5', 'Gene', (154, 159)) ('SSTR5', 'Gene', '6755', (72, 77)) ('SSTR5', 'Gene', (72, 77)) 2741 31196171 The methylation status of promoter region of SSTR5 in LSCC tissues was not associated with any clinicopathologic characteristics, while the methylation status of exon 1 in LSCC tissues was associated with TNM stage and lymph node metastasis (P < 0.05) (Table 1). ('methylation', 'Var', (140, 151)) ('TNM stage', 'CPA', (205, 214)) ('associated', 'Reg', (189, 199)) ('SSTR5', 'Gene', '6755', (45, 50)) ('lymph node metastasis', 'CPA', (219, 240)) ('SSTR5', 'Gene', (45, 50)) 2742 31196171 The mRNA expression level of SSTR5 in LSCC tissues with hypermethylation of exon 1 was significantly decreased than that with unmethylation of this region (P < 0.05); however, the expression level of SSTR5 was not associated with methylation status of promoter region (P > 0.05) (Fig. ('SSTR5', 'Gene', (200, 205)) ('mRNA expression level', 'MPA', (4, 25)) ('SSTR5', 'Gene', '6755', (29, 34)) ('SSTR5', 'Gene', (29, 34)) ('hypermethylation', 'Var', (56, 72)) ('decreased', 'NegReg', (101, 110)) ('SSTR5', 'Gene', '6755', (200, 205)) 2744 31196171 To determine the potential role of histone modifications on SSTR5 downregulation, the presence of active (H3K4me3, H3K9ac) and inactive (H3K9me2) histone modifications at SSTR5 promoter was further examined by chromatin immunoprecipitation assay in AMC-HN-8 cells (Fig. ('SSTR5', 'Gene', '6755', (171, 176)) ('SSTR5', 'Gene', '6755', (60, 65)) ('H3K4me3', 'Var', (106, 113)) ('SSTR5', 'Gene', (171, 176)) ('SSTR5', 'Gene', (60, 65)) ('H3K9ac', 'Var', (115, 121)) ('AMC-HN-8', 'CellLine', 'CVCL:5966', (249, 257)) 2746 31196171 Increased enrichment of H3K4me3 and decreased enrichment of H3K9me2 were detected in 5-Aza-dC-treated AMC-HN-8 cells, and significant increased enrichment of H3K9ac was detected in TSA-treated AMC-HN-8 cells, indicating that in addition to DNA methylation, histone modification is also involved in the regulation of SSTR5 expression. ('SSTR5', 'Gene', (316, 321)) ('TSA', 'Chemical', 'MESH:C012589', (181, 184)) ('AMC-HN-8', 'CellLine', 'CVCL:5966', (102, 110)) ('5-Aza-dC-treated', 'Var', (85, 101)) ('5-Aza-dC', 'Chemical', 'MESH:D000077209', (85, 93)) ('H3K4me3', 'Var', (24, 31)) ('involved', 'Reg', (286, 294)) ('enrichment', 'MPA', (10, 20)) ('AMC-HN-8', 'CellLine', 'CVCL:5966', (193, 201)) ('enrichment', 'MPA', (46, 56)) ('SSTR5', 'Gene', '6755', (316, 321)) ('decreased', 'NegReg', (36, 45)) 2774 31196171 Promoter CpG sites hypermethylation of E-cadherin is a recognized mechanism of its inactivation in numerous cancers. ('numerous cancers', 'Disease', 'MESH:D009369', (99, 115)) ('inactivation', 'NegReg', (83, 95)) ('E-cadherin', 'Gene', '999', (39, 49)) ('E-cadherin', 'Gene', (39, 49)) ('numerous cancers', 'Disease', (99, 115)) ('cancer', 'Phenotype', 'HP:0002664', (108, 114)) ('hypermethylation', 'Var', (19, 35)) ('cancers', 'Phenotype', 'HP:0002664', (108, 115)) 2778 31196171 The hMeDIP-qPCR assay was used to track the 5hmC change in the CpG-rich regions of E-cadherin promoters, and co-expression of SSTR5-AS1 and TET1 in AMC-HN-8 cells significantly increased 5hmC levels at the promoter regions of E-cadherin (Fig. ('E-cadherin', 'Gene', (83, 93)) ('E-cadherin', 'Gene', '999', (83, 93)) ('TET1', 'Gene', '80312', (140, 144)) ('SSTR5-AS1', 'Var', (126, 135)) ('5hmC', 'Chemical', '-', (187, 191)) ('increased', 'PosReg', (177, 186)) ('5hmC levels', 'MPA', (187, 198)) ('AMC-HN-8', 'CellLine', 'CVCL:5966', (148, 156)) ('E-cadherin', 'Gene', (226, 236)) ('5hmC', 'Chemical', '-', (44, 48)) ('E-cadherin', 'Gene', '999', (226, 236)) ('TET1', 'Gene', (140, 144)) 2790 31196171 AChE-AS represses AChE expression via epigenetic modification of the AChE promoter region and demonstrates an anti-apoptotic effect in hepatocellular carcinoma cells. ('AChE', 'Gene', '43', (0, 4)) ('AChE', 'Gene', (18, 22)) ('AChE', 'Gene', '43', (18, 22)) ('AChE', 'Gene', '43', (69, 73)) ('hepatocellular carcinoma', 'Phenotype', 'HP:0001402', (135, 159)) ('carcinoma', 'Phenotype', 'HP:0030731', (150, 159)) ('hepatocellular carcinoma', 'Disease', (135, 159)) ('hepatocellular carcinoma', 'Disease', 'MESH:D006528', (135, 159)) ('represses', 'NegReg', (8, 17)) ('epigenetic', 'Var', (38, 48)) ('AChE', 'Gene', (0, 4)) ('anti-apoptotic effect', 'CPA', (110, 131)) ('AChE', 'Gene', (69, 73)) 2792 31196171 Moreover, by genomic sequence analysis, obvious CpG islands were found in the promoter and exon 1 regions of SSTR5 and SSTR5-AS1, indicating the possible epigenetic regulation mechanisms on their expression regulation. ('SSTR5', 'Gene', '6755', (109, 114)) ('SSTR5', 'Gene', (109, 114)) ('SSTR5', 'Gene', '6755', (119, 124)) ('CpG', 'Var', (48, 51)) ('SSTR5', 'Gene', (119, 124)) 2796 31196171 In the present study, we verified the tumor suppressor role of SSTR5 and SSTR5-AS1 in LSCC progression; DNA hypermethylation and histone modification may co-regulate the expression of SSTR5 and SSTR5-AS1. ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('tumor', 'Disease', (38, 43)) ('SSTR5', 'Gene', '6755', (184, 189)) ('SSTR5', 'Gene', '6755', (73, 78)) ('SSTR5', 'Gene', (184, 189)) ('SSTR5', 'Gene', (73, 78)) ('SSTR5', 'Gene', '6755', (194, 199)) ('SSTR5', 'Gene', (194, 199)) ('SSTR5', 'Gene', '6755', (63, 68)) ('co-regulate', 'Reg', (154, 165)) ('DNA hypermethylation', 'Var', (104, 124)) ('histone modification', 'Var', (129, 149)) ('LSCC', 'Disease', (86, 90)) ('tumor', 'Disease', 'MESH:D009369', (38, 43)) ('SSTR5', 'Gene', (63, 68)) ('expression', 'MPA', (170, 180)) 2809 31196171 In the process of laryngeal squamous cell carcinogenesis, when CpG sites hypermethylation occurs in the promoter region of E-cadherin, SSTR5-AS1 may also act as a tumor suppressor gene to upregulate the expression of E-cadherin by recruiting TET1 to E-cadherin to hydrolyze 5'-mc to 5'-hmc, thus inhibiting the occurrence of EMT. ('hypermethylation', 'Var', (73, 89)) ('laryngeal squamous cell carcinogenesis', 'Disease', 'MESH:D063646', (18, 56)) ('TET1', 'Gene', (242, 246)) ('tumor', 'Disease', (163, 168)) ('laryngeal squamous cell carcinogenesis', 'Disease', (18, 56)) ("hydrolyze 5'-mc to 5'-hmc", 'MPA', (264, 289)) ('SSTR5-AS1', 'Gene', (135, 144)) ('tumor', 'Disease', 'MESH:D009369', (163, 168)) ('E-cadherin', 'Gene', (250, 260)) ('E-cadherin', 'Gene', '999', (250, 260)) ('E-cadherin', 'Gene', (123, 133)) ('E-cadherin', 'Gene', '999', (123, 133)) ('inhibiting', 'NegReg', (296, 306)) ('upregulate', 'PosReg', (188, 198)) ('E-cadherin', 'Gene', (217, 227)) ('E-cadherin', 'Gene', '999', (217, 227)) ("5'-mc", 'Chemical', 'MESH:D044503', (274, 279)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('TET1', 'Gene', '80312', (242, 246)) ('recruiting', 'PosReg', (231, 241)) ('expression', 'MPA', (203, 213)) ("5'-hmc", 'Chemical', 'MESH:C011865', (283, 289)) 2810 31196171 SSTR5 may act as a tumor suppressor gene in LSCC, and aberrant DNA hypermethylation of the CpG sites clustered in the exon 1 and histone modification on its promoter region may be epigenetic mechanisms for its inactivation. ('LSCC', 'Disease', (44, 48)) ('tumor', 'Disease', 'MESH:D009369', (19, 24)) ('CpG', 'Gene', (91, 94)) ('SSTR5', 'Gene', '6755', (0, 5)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('tumor', 'Disease', (19, 24)) ('SSTR5', 'Gene', (0, 5)) ('histone modification', 'Var', (129, 149)) ('aberrant', 'Var', (54, 62)) 2811 31196171 SSTR5-AS1 may play anti-tumor role in LSCC and may be regulated by hypermethylation of the same CpG sites with SSTR5. ('SSTR5', 'Gene', '6755', (111, 116)) ('tumor', 'Phenotype', 'HP:0002664', (24, 29)) ('SSTR5', 'Gene', (111, 116)) ('tumor', 'Disease', (24, 29)) ('LSCC', 'Disease', (38, 42)) ('SSTR5', 'Gene', '6755', (0, 5)) ('hypermethylation', 'Var', (67, 83)) ('SSTR5', 'Gene', (0, 5)) ('tumor', 'Disease', 'MESH:D009369', (24, 29)) 2848 31196171 Antibodies against H3K4me3, H3K9ac, H3K9me2, MLL3, and TET1 (Upstate, Millipore, MA, USA) were used for immunoprecipitation. ('H3K9me2', 'Var', (36, 43)) ('TET1', 'Gene', (55, 59)) ('H3K4me3', 'Var', (19, 26)) ('H3K9ac', 'Var', (28, 34)) ('MLL3', 'Gene', (45, 49)) ('TET1', 'Gene', '80312', (55, 59)) ('MLL3', 'Gene', '58508', (45, 49)) 2866 26739108 In the present study, we show that ERK5, but not ERK1/2 regulates TH levels in rat sympathetic neurons. ('ERK1/2', 'Gene', '50689;116590', (49, 55)) ('ERK1/2', 'Gene', (49, 55)) ('ERK5', 'Var', (35, 39)) ('regulates', 'Reg', (56, 65)) ('TH', 'Gene', '25085', (66, 68)) ('rat', 'Species', '10116', (79, 82)) 2870 26739108 TH levels were reduced by ankrd1 knockdown with no changes in the mRNA levels, suggesting that ankrd1 was involved in stabilization of TH protein. ('ankrd1', 'Gene', (26, 32)) ('TH', 'Gene', '25085', (135, 137)) ('knockdown', 'Var', (33, 42)) ('reduced', 'NegReg', (15, 22)) ('TH', 'Gene', '25085', (0, 2)) 2871 26739108 Interestingly, ubiquitination of TH was enhanced and catecholamine biosynthesis was reduced by ankrd1 knockdown. ('catecholamine biosynthesis', 'MPA', (53, 79)) ('TH', 'Gene', '25085', (33, 35)) ('ankrd1', 'Gene', (95, 101)) ('knockdown', 'Var', (102, 111)) ('reduced', 'NegReg', (84, 91)) ('catecholamine', 'Chemical', 'MESH:D002395', (53, 66)) ('ubiquitination', 'MPA', (15, 29)) ('enhanced', 'PosReg', (40, 48)) 2881 26739108 The ERK5 gene knockout is lethal at E9.5-10.5 due to cardiovascular defects. ('cardiovascular defects', 'Disease', 'MESH:D002318', (53, 75)) ('ERK5', 'Gene', (4, 8)) ('knockout', 'Var', (14, 22)) ('cardiovascular defects', 'Disease', (53, 75)) ('cardiovascular defects', 'Phenotype', 'HP:0001626', (53, 75)) 2915 26739108 A day after being plated, explants were photographed and incubated with or without U0126 and BIX02189, and then photographed again 6 h later. ('BIX02189', 'Var', (93, 101)) ('U0126', 'Var', (83, 88)) ('U0126', 'Chemical', 'MESH:C113580', (83, 88)) ('BIX02189', 'Chemical', 'MESH:C533207', (93, 101)) 2919 26739108 Among them, genes whose expression was inhibited by more than 50% by U0126 and BIX02189 were defined as ERK1/2-dependent genes and ERK5-dependent genes, respectively. ('inhibited', 'NegReg', (39, 48)) ('U0126', 'Chemical', 'MESH:C113580', (69, 74)) ('expression', 'MPA', (24, 34)) ('BIX02189', 'Var', (79, 87)) ('ERK1/2', 'Gene', (104, 110)) ('ERK1/2', 'Gene', '50689;116590', (104, 110)) ('BIX02189', 'Chemical', 'MESH:C533207', (79, 87)) ('U0126', 'Var', (69, 74)) 2971 26739108 Cellular accumulation of ERK5 and ankrd1 was defined as positive cytoplasmic staining of more than 50% of tumor and adrenal medullary cells despite their staining intensity. ('ankrd1', 'Gene', (34, 40)) ('ERK5', 'Var', (25, 29)) ('tumor', 'Disease', 'MESH:D009369', (106, 111)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('tumor', 'Disease', (106, 111)) 2972 26739108 Previously, we have shown that NGF promotes both ERK5 and ERK1/2 phosphorylation in PC12 cells and ERK5 is responsible for neurite outgrowth and TH expression along with ERK1/2. ('ERK5', 'Var', (99, 103)) ('TH', 'Gene', '25085', (145, 147)) ('neurite outgrowth', 'CPA', (123, 140)) ('promotes', 'PosReg', (35, 43)) ('phosphorylation', 'MPA', (65, 80)) ('ERK1/2', 'Gene', (170, 176)) ('ERK1/2', 'Gene', '50689;116590', (58, 64)) ('ERK1/2', 'Gene', '50689;116590', (170, 176)) ('NGF', 'Gene', (31, 34)) ('ERK5', 'Protein', (49, 53)) ('ERK1/2', 'Gene', (58, 64)) ('PC12 cells', 'CellLine', 'CVCL:0481', (84, 94)) 2973 26739108 In that study, the role of ERK5 was examined using dominant-negative mutants of ERK5 or MEK5, or novel pharmacological inhibitors, BIX02188 or BIX02189. ('ERK5', 'Gene', (80, 84)) ('BIX02189', 'Var', (143, 151)) ('MEK5', 'Gene', '29568', (88, 92)) ('mutants', 'Var', (69, 76)) ('BIX02189', 'Chemical', 'MESH:C533207', (143, 151)) ('MEK5', 'Gene', (88, 92)) ('BIX02188', 'Var', (131, 139)) ('BIX02188', 'Chemical', 'MESH:C533206', (131, 139)) 2977 26739108 When these cells were cultured in the presence or absence of NGF (100 ng/ml) for a day, TH levels were selectively abolished by ERK5 knockdown in both basal and NGF-stimulated states, whereas other neuronal marker/cytoskeletal protein levels including neurofilament light chain, beta-tubulin, beta-actin and GAPDH were not affected at all by ERK5 knockdown (Fig. ('knockdown', 'Var', (347, 356)) ('beta-actin', 'Gene', (293, 303)) ('ERK5', 'Gene', (342, 346)) ('beta-actin', 'Gene', '81822', (293, 303)) ('abolished', 'NegReg', (115, 124)) ('knockdown', 'Var', (133, 142)) ('TH', 'Gene', '25085', (88, 90)) ('ERK5', 'Gene', (128, 132)) 2979 26739108 The loss of TH by ERK5 shRNA was greater than that by the biochemical interfering mutants and pharmacological inhibitors as observed in a previous study, suggesting that constitutive ERK5 knockdown can cause a more dramatic effect. ('knockdown', 'Var', (188, 197)) ('ERK5', 'Gene', (18, 22)) ('loss', 'NegReg', (4, 8)) ('TH', 'Gene', '25085', (12, 14)) 2984 26739108 NGF alone (2 ng/ml) promoted axon elongation at approximately 30 mum/h, and BIX02189 completely blocked axon elongation whereas U0126 did not in our condition (Figs. ('axon elongation', 'CPA', (29, 44)) ('promoted', 'PosReg', (20, 28)) ('blocked', 'NegReg', (96, 103)) ('U0126', 'Chemical', 'MESH:C113580', (128, 133)) ('BIX02189', 'Chemical', 'MESH:C533207', (76, 84)) ('BIX02189', 'Var', (76, 84)) ('axon elongation', 'CPA', (104, 119)) 2986 26739108 Four days after ERK5 shRNA was transfected into the sympathetic neurons, TH levels were reduced significantly (Fig. ('TH', 'Gene', '25085', (73, 75)) ('reduced', 'NegReg', (88, 95)) ('transfected', 'Var', (31, 42)) 2987 26739108 There was no change in TH levels in neurons incubated with U0126 (20 muM) for 1 or 3 days, although phosphorylation of ERK1/2 was inhibited (Fig. ('U0126', 'Chemical', 'MESH:C113580', (59, 64)) ('inhibited', 'NegReg', (130, 139)) ('phosphorylation', 'MPA', (100, 115)) ('ERK1/2', 'Gene', '50689;116590', (119, 125)) ('U0126', 'Var', (59, 64)) ('TH', 'Gene', '25085', (23, 25)) ('ERK1/2', 'Gene', (119, 125)) 2991 26739108 Expression of 232 NGF-stimulated genes (62.0%) was attenuated by both U0126 and BIX02189 (i.e. ('U0126', 'Chemical', 'MESH:C113580', (70, 75)) ('Expression', 'MPA', (0, 10)) ('attenuated', 'NegReg', (51, 61)) ('U0126', 'Var', (70, 75)) ('BIX02189', 'Chemical', 'MESH:C533207', (80, 88)) ('BIX02189', 'Var', (80, 88)) 2992 26739108 ERK1/2 and ERK5-dependent genes), expression of 49 genes (13.1%) genes was inhibited by U0126 only (i.e. ('ERK5-dependent', 'Gene', (11, 25)) ('expression', 'MPA', (34, 44)) ('U0126', 'Var', (88, 93)) ('ERK1/2', 'Gene', (0, 6)) ('ERK1/2', 'Gene', '50689;116590', (0, 6)) ('inhibited', 'NegReg', (75, 84)) ('U0126', 'Chemical', 'MESH:C113580', (88, 93)) 2993 26739108 ERK1/2-dependent genes), and induction of 46 genes (12.3%) was blocked by BIX02189 only (i.e. ('BIX02189', 'Var', (74, 82)) ('BIX02189', 'Chemical', 'MESH:C533207', (74, 82)) ('ERK1/2', 'Gene', '50689;116590', (0, 6)) ('ERK1/2', 'Gene', (0, 6)) 2994 26739108 We also checked the selectivity of BIX02189 and U0126 at the same time when the samples for microarray were prepared. ('U0126', 'Chemical', 'MESH:C113580', (48, 53)) ('BIX02189', 'Var', (35, 43)) ('BIX02189', 'Chemical', 'MESH:C533207', (35, 43)) ('U0126', 'Var', (48, 53)) ('checked', 'Reg', (8, 15)) 3007 26739108 NGF induction of TH mRNA was blocked significantly by BIX02189, but U0126 also showed tendency to inhibit the expression although it was not significant in our condition. ('U0126', 'Chemical', 'MESH:C113580', (68, 73)) ('U0126', 'Var', (68, 73)) ('inhibit', 'NegReg', (98, 105)) ('TH', 'Gene', '25085', (17, 19)) ('BIX02189', 'Chemical', 'MESH:C533207', (54, 62)) ('BIX02189', 'Var', (54, 62)) 3018 26739108 In this condition, ankrd1 siRNA decreased basal TH levels (by 30.3%) and NGF (100 ng/ml, a day)-stimulated TH (decreased by 61.7%). ('TH', 'Gene', '25085', (48, 50)) ('decreased', 'NegReg', (32, 41)) ('TH', 'Gene', '25085', (107, 109)) ('ankrd1', 'Var', (19, 25)) 3034 26739108 Furthermore, ankrd1 knockdown did not decrease TH protein levels when proteasome activity was blocked by MG132 (Fig. ('knockdown', 'Var', (20, 29)) ('ankrd1', 'Gene', (13, 19)) ('MG132', 'Chemical', 'MESH:C072553', (105, 110)) ('TH', 'Gene', '25085', (47, 49)) 3037 26739108 NGF stimulated catecholamine biosynthesis in PC12 cells, and ERK5 knockdown decreased catecholamine biosynthesis (Fig. ('catecholamine', 'Chemical', 'MESH:D002395', (86, 99)) ('decreased', 'NegReg', (76, 85)) ('ERK5', 'Gene', (61, 65)) ('catecholamine', 'Chemical', 'MESH:D002395', (15, 28)) ('catecholamine biosynthesis', 'MPA', (86, 112)) ('PC12 cells', 'CellLine', 'CVCL:0481', (45, 55)) ('knockdown', 'Var', (66, 75)) ('catecholamine biosynthesis', 'MPA', (15, 41)) 3039 26739108 Furthermore, ankrd1 knockdown with siRNA prevented the NGF (100 ng/ml)-induced increase in catecholamine levels (Fig. ('increase', 'PosReg', (79, 87)) ('ankrd1', 'Gene', (13, 19)) ('prevented', 'NegReg', (41, 50)) ('knockdown', 'Var', (20, 29)) ('catecholamine levels', 'MPA', (91, 111)) ('catecholamine', 'Chemical', 'MESH:D002395', (91, 104)) 3041 26739108 NGF stimulated dopamine biosynthesis compared with drug-free control, and ankrd1 knockdown prevented the NGF-induced increase in dopamine compared to control siRNA with NGF. ('ankrd1', 'Gene', (74, 80)) ('prevented', 'NegReg', (91, 100)) ('dopamine', 'MPA', (129, 137)) ('knockdown', 'Var', (81, 90)) ('dopamine', 'Chemical', 'MESH:D004298', (15, 23)) ('dopamine biosynthesis', 'MPA', (15, 36)) ('dopamine', 'Chemical', 'MESH:D004298', (129, 137)) 3042 26739108 For norepinephrine, ankrd1 knockdown prevented the norepinephrine levels compared to control siRNA with or without NGF (Fig. ('norepinephrine levels', 'MPA', (51, 72)) ('knockdown', 'Var', (27, 36)) ('ankrd1', 'Gene', (20, 26)) ('norepinephrine', 'Chemical', 'MESH:D009638', (51, 65)) ('norepinephrine', 'Chemical', 'MESH:D009638', (4, 18)) ('prevented', 'NegReg', (37, 46)) 3066 26739108 Furthermore, we first showed that ankrd1 induced by ERK5 but not ERK1/2 is involved in TH protein expression and catecholamine biosynthesis (Fig. ('involved', 'Reg', (75, 83)) ('TH', 'Gene', '25085', (87, 89)) ('ankrd1', 'Gene', (34, 40)) ('ERK1/2', 'Gene', (65, 71)) ('ERK1/2', 'Gene', '50689;116590', (65, 71)) ('catecholamine biosynthesis', 'MPA', (113, 139)) ('ERK5', 'Var', (52, 56)) ('catecholamine', 'Chemical', 'MESH:D002395', (113, 126)) 3069 26739108 We have previously showed that TH protein expression is reduced by dominant-negative mutants of ERK5 and MEK5 or a pharmacological inhibitor, BIX02189 . ('TH', 'Gene', '25085', (31, 33)) ('reduced', 'NegReg', (56, 63)) ('MEK5', 'Gene', (105, 109)) ('BIX02189', 'Chemical', 'MESH:C533207', (142, 150)) ('ERK5', 'Gene', (96, 100)) ('mutants', 'Var', (85, 92)) ('MEK5', 'Gene', '29568', (105, 109)) 3070 26739108 In the present study, we used PC12 cells clones that stably express ERK5 shRNA to constitutively lower ERK5 protein levels. ('ERK5', 'Var', (68, 72)) ('PC12 cells', 'CellLine', 'CVCL:0481', (30, 40)) ('lower', 'NegReg', (97, 102)) ('ERK5 protein levels', 'MPA', (103, 122)) 3078 26739108 In our previous study, we observed dominant negative mutants of ERK5 and MEK5 and its pharmacological inhibitor attenuated the NGF-induced neurite outgrowth in PC12 cells. ('MEK5', 'Gene', (73, 77)) ('PC12 cells', 'CellLine', 'CVCL:0481', (160, 170)) ('ERK5', 'Gene', (64, 68)) ('mutants', 'Var', (53, 60)) ('MEK5', 'Gene', '29568', (73, 77)) ('attenuated', 'NegReg', (112, 122)) ('negative', 'NegReg', (44, 52)) 3080 26739108 This was surprising because U0126 caused significant inhibitory effect on neurite outgrowth in PC12 cells and dissociated sympathetic neurons. ('U0126', 'Chemical', 'MESH:C113580', (28, 33)) ('PC12 cells', 'CellLine', 'CVCL:0481', (95, 105)) ('U0126', 'Var', (28, 33)) ('neurite outgrowth', 'CPA', (74, 91)) ('inhibitory', 'NegReg', (53, 63)) 3084 26739108 Although other groups have also reported that U0126 does not block ERK5 efficiently at low doses as observed in our study, there are conflicting reports showing U0126 inhibits ERK5 in addition to ERK1/2. ('ERK1/2', 'Gene', '50689;116590', (196, 202)) ('ERK1/2', 'Gene', (196, 202)) ('U0126', 'Chemical', 'MESH:C113580', (46, 51)) ('ERK5', 'Enzyme', (176, 180)) ('U0126', 'Var', (161, 166)) ('U0126', 'Chemical', 'MESH:C113580', (161, 166)) ('inhibits', 'NegReg', (167, 175)) 3086 26739108 In fact, we observed lower band shift of phosho-ERK5 in U0126-treated cells although phosphorylation status of ERK5 at the TEY activation site was not blocked by U0126 (Figs. ('U0126', 'Chemical', 'MESH:C113580', (162, 167)) ('U0126', 'Chemical', 'MESH:C113580', (56, 61)) ('lower', 'NegReg', (21, 26)) ('U0126-treated', 'Var', (56, 69)) ('band shift', 'MPA', (27, 37)) 3091 26739108 As a transcriptional modulator, ankrd1 binds to p53 tumor suppressor protein and enhances its transcriptional activity, whereas ankrd1 represses some cardiac gene expression. ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('p53', 'Gene', (48, 51)) ('ankrd1', 'Var', (32, 38)) ('tumor', 'Disease', (52, 57)) ('transcriptional activity', 'MPA', (94, 118)) ('enhances', 'PosReg', (81, 89)) ('represses', 'NegReg', (135, 144)) ('p53', 'Gene', '301300', (48, 51)) ('binds', 'Interaction', (39, 44)) ('cardiac', 'MPA', (150, 157)) ('tumor', 'Disease', 'MESH:D009369', (52, 57)) 3096 26739108 Sp3 is also activated by phosphorylation by ERKs, suggesting these factors are involved in ERK5-mediated ankrd1 gene expression. ('Sp3', 'Gene', '367846', (0, 3)) ('ERKs', 'Gene', '5594;50689;116590;50689', (44, 48)) ('ERKs', 'Gene', (44, 48)) ('phosphorylation', 'Var', (25, 40)) ('Sp3', 'Gene', (0, 3)) 3097 26739108 One unresolved findings is that ankrd1 expression is induced by only ERK5, and not ERK1/2. ('ankrd1', 'Gene', (32, 38)) ('ERK1/2', 'Gene', (83, 89)) ('ERK1/2', 'Gene', '50689;116590', (83, 89)) ('ERK5', 'Var', (69, 73)) ('expression', 'MPA', (39, 49)) 3099 26739108 However, neurite outgrowth was neither affected by ankrd1 knockdown nor overexpression in PC12 cells (supplemental Fig. ('PC12 cells', 'CellLine', 'CVCL:0481', (90, 100)) ('neurite outgrowth', 'CPA', (9, 26)) ('knockdown', 'Var', (58, 67)) ('ankrd1', 'Gene', (51, 57)) 3101 26739108 In the present study, ankrd1 knockdown reduced TH protein levels and catecholamine biosynthesis without changing the mRNA levels (Fig. ('knockdown', 'Var', (29, 38)) ('catecholamine', 'Chemical', 'MESH:D002395', (69, 82)) ('TH', 'Gene', '25085', (47, 49)) ('reduced', 'NegReg', (39, 46)) ('catecholamine biosynthesis', 'MPA', (69, 95)) ('ankrd1', 'Gene', (22, 28)) 3105 26739108 5), therefore blockade of catecholamine biosynthesis by ankrd1 knockdown was partial whereas it was completely inhibited by ERK5 knockdown (Fig. ('knockdown', 'Var', (63, 72)) ('ankrd1', 'Gene', (56, 62)) ('catecholamine', 'Chemical', 'MESH:D002395', (26, 39)) ('catecholamine biosynthesis', 'MPA', (26, 52)) 3107 26739108 However, we revealed that this phosphorylation was ERK1/2-dependent but ERK5-independent, suggesting that ERK5 stabilizes TH protein using a distinct mechanism. ('ERK1/2', 'Gene', (51, 57)) ('ERK1/2', 'Gene', '50689;116590', (51, 57)) ('TH', 'Gene', '25085', (122, 124)) ('ERK5', 'Var', (106, 110)) 3116 26739108 At first, we hypothesized that ERK5 and ankrd1 were also overexpressed in adrenal pheochromocytomas because ERK5 signaling increased TH levels in PC12 cells and sympathetic neurons. ('increased', 'PosReg', (123, 132)) ('ankrd1', 'Gene', (40, 46)) ('PC12 cells', 'CellLine', 'CVCL:0481', (146, 156)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (74, 99)) ('adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (74, 99)) ('adrenal pheochromocytomas', 'Disease', (74, 99)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (82, 99)) ('ERK5', 'Var', (108, 112)) ('TH', 'Gene', '25085', (133, 135)) ('overexpressed', 'PosReg', (57, 70)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (82, 98)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (74, 98)) 3119 26739108 As mentioned above, loss of ERK5 causes down-regulation of TH in PC12 cells and sympathetic neurons, but this observation is not applied to the pathological conditions such as adrenal pheochromocytomas. ('loss', 'Var', (20, 24)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (184, 200)) ('adrenal pheochromocytomas', 'Disease', (176, 201)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (184, 201)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (176, 200)) ('down-regulation', 'NegReg', (40, 55)) ('ERK5', 'Gene', (28, 32)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (176, 201)) ('PC12 cells', 'CellLine', 'CVCL:0481', (65, 75)) ('TH', 'Gene', '25085', (59, 61)) ('adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (176, 201)) 3124 26739108 In addition, we found for the first time that ankrd1 gene expression was induced by ERK5 signaling, but not ERK1/2 signaling and ankrd1 was required for stabilization of TH protein and promotion of catecholamine biosynthesis. ('catecholamine biosynthesis', 'MPA', (198, 224)) ('TH', 'Gene', '25085', (170, 172)) ('expression', 'MPA', (58, 68)) ('ERK1/2', 'Gene', (108, 114)) ('ERK1/2', 'Gene', '50689;116590', (108, 114)) ('ankrd1 gene', 'Gene', (46, 57)) ('catecholamine', 'Chemical', 'MESH:D002395', (198, 211)) ('ERK5', 'Var', (84, 88)) 3170 30461634 3), the tumor was partly S-100(+), SyN(+), CgA(+), CD56(+), CD10(-), approximately 5% Ki67(+), and CK(-), and sustentacular cells were seen around chief cells, which is in accordance with PGL. ('SyN', 'Gene', '23336', (35, 38)) ('SyN', 'Gene', (35, 38)) ('CgA', 'Gene', '1113', (43, 46)) ('CD56(+', 'Var', (51, 57)) ('tumor', 'Disease', 'MESH:D009369', (8, 13)) ('PGL', 'Phenotype', 'HP:0002668', (188, 191)) ('CD10(-', 'Var', (60, 66)) ('CgA', 'Gene', (43, 46)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('S-100(+', 'Var', (25, 32)) ('tumor', 'Disease', (8, 13)) ('Ki67', 'Var', (86, 90)) 3200 30461634 The possibility of SDH mutation was also not ruled out in the present case because SDH mutations are most common in PCC/PGL, and the rate of malignancy is about 50% for SDHB-related sympathetic PGL. ('SDH', 'Gene', (19, 22)) ('SDHB', 'Gene', '6390', (169, 173)) ('PGL', 'Phenotype', 'HP:0002668', (194, 197)) ('SDHB', 'Gene', (169, 173)) ('malignancy', 'Disease', 'MESH:D009369', (141, 151)) ('SDH', 'Gene', '6390', (169, 172)) ('SDH', 'Gene', '6390', (83, 86)) ('malignancy', 'Disease', (141, 151)) ('PGL', 'Phenotype', 'HP:0002668', (120, 123)) ('PCC', 'Phenotype', 'HP:0002666', (116, 119)) ('SDH', 'Gene', (83, 86)) ('PCC/PGL', 'Disease', (116, 123)) ('SDH', 'Gene', '6390', (19, 22)) ('SDH', 'Gene', (169, 172)) ('common', 'Reg', (106, 112)) ('mutations', 'Var', (87, 96)) 3201 30461634 Immunohistochemistry is progressively used as a screening tool prior to germline testing, and immunohistochemical staining for SDHB has been validated as a sensitive, reliable marker for germline mutation of any of the SDH subunit genes. ('SDH', 'Gene', '6390', (219, 222)) ('SDH', 'Gene', (127, 130)) ('SDHB', 'Gene', '6390', (127, 131)) ('SDH', 'Gene', (219, 222)) ('germline', 'Var', (187, 195)) ('SDHB', 'Gene', (127, 131)) ('SDH', 'Gene', '6390', (127, 130)) 3369 28789448 Patients with identified germline mutations in subunit B of succinate dehydrogenase exhibit an increased likelihood of experiencing malignancy, multiple pheochromocytomas and recurrences. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (153, 170)) ('malignancy', 'Disease', 'MESH:D009369', (132, 142)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (153, 169)) ('Patients', 'Species', '9606', (0, 8)) ('germline mutations', 'Var', (25, 43)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (153, 170)) ('malignancy', 'Disease', (132, 142)) ('pheochromocytomas', 'Disease', (153, 170)) 3401 19690028 Usefulness of 123I-MIBG Scintigraphy in the Evaluation of Patients with Known or Suspected Primary or Metastatic Pheochromocytoma or Paraganglioma: Results from a Prospective Multicenter Trial Although 123I-MIBG has been in clinical use for the imaging of pheochromocytoma for many years, a large multicenter evaluation of this agent has never been performed. ('pheochromocytoma', 'Disease', (256, 272)) ('Primary or Metastatic Pheochromocytoma or Paraganglioma', 'Disease', 'MESH:D010673', (91, 146)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (256, 272)) ('123I-MIBG', 'Var', (202, 211)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (14, 23)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (256, 272)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (202, 211)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (113, 129)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (133, 146)) ('Patients', 'Species', '9606', (58, 66)) 3412 19690028 During the past 25 y, both 123I-MIBG and 131I-MIBG have been extensively used in research and clinical imaging of pheochromocytoma, even though in the United States before September 2008, only 131I-MIBG was approved by the Food and Drug Administration (FDA) as a diagnostic imaging agent. ('131I-MIBG', 'Var', (193, 202)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (114, 130)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (114, 130)) ('131I-MIBG', 'Chemical', '-', (41, 50)) ('131I-MIBG', 'Chemical', '-', (193, 202)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (27, 36)) ('pheochromocytoma', 'Disease', (114, 130)) 3415 19690028 The objective of the present trial was to document the efficacy of 123I-MIBG scintigraphy for confirming or excluding the diagnosis of pheochromocytoma. ('123I-MIBG', 'Chemical', 'MESH:D019797', (67, 76)) ('pheochromocytoma', 'Disease', (135, 151)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (135, 151)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (135, 151)) ('123I-MIBG', 'Var', (67, 76)) 3456 19690028 After the first reports of MIBG (labeled with 131I) results in pheochromocytoma in 1981, similar descriptions of experience using 123I-MIBG appeared within the next few years. ('MIBG', 'Var', (27, 31)) ('MIBG', 'Chemical', 'MESH:D019797', (27, 31)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (130, 139)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (63, 79)) ('131I', 'Chemical', 'MESH:C000614965', (46, 50)) ('MIBG', 'Chemical', 'MESH:D019797', (135, 139)) ('pheochromocytoma', 'Disease', (63, 79)) ('results in', 'Reg', (52, 62)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (63, 79)) 3459 19690028 Sensitivities for detecting primary pheochromocytoma using 123I-MIBG and 131I-MIBG have almost always been reported as greater than 80%. ('131I-MIBG', 'Chemical', '-', (73, 82)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (59, 68)) ('pheochromocytoma', 'Disease', (36, 52)) ('123I-MIBG', 'Var', (59, 68)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (36, 52)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (36, 52)) ('131I-MIBG', 'Var', (73, 82)) 3472 19690028 Potential relationships between 123I-MIBG imaging results and genetic abnormalities associated with pheochromocytoma could not be explored because the trial did not include the collection of relevant historical and histopathology data. ('123I-MIBG', 'Var', (32, 41)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (100, 116)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (100, 116)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (32, 41)) ('genetic abnormalities', 'Disease', 'MESH:D030342', (62, 83)) ('pheochromocytoma', 'Disease', (100, 116)) ('genetic abnormalities', 'Disease', (62, 83)) 3474 19690028 This prospective multicenter clinical trial confirmed the performance characteristics of 123I-MIBG scintigraphic imaging in a contemporary population of patients referred for assessment of known prior or suspected pheochromocytoma and paraganglioma, with sensitivities of 87%-90% for the former and 67%-100% for the latter. ('paraganglioma', 'Disease', (235, 248)) ('123I-MIBG', 'Var', (89, 98)) ('patients', 'Species', '9606', (153, 161)) ('pheochromocytoma', 'Disease', (214, 230)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (89, 98)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (214, 230)) ('paraganglioma', 'Disease', 'MESH:D010235', (235, 248)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (214, 230)) ('paraganglioma', 'Phenotype', 'HP:0002668', (235, 248)) 3597 25973288 Also, mutation in succinate dehydrogenase gene (SDH) may lead to familial paraganglioma. ('familial paraganglioma', 'Disease', 'MESH:D010235', (65, 87)) ('SDH', 'Gene', '6390', (48, 51)) ('mutation', 'Var', (6, 14)) ('lead to', 'Reg', (57, 64)) ('SDH', 'Gene', (48, 51)) ('familial paraganglioma', 'Disease', (65, 87)) ('paraganglioma', 'Phenotype', 'HP:0002668', (74, 87)) 3598 25973288 Three subunits of SDH gene mutation have been described in the literature and 33% of patients with SDH subunit B mutation have a positive family history. ('mutation', 'Var', (113, 121)) ('SDH', 'Gene', (99, 102)) ('SDH', 'Gene', '6390', (18, 21)) ('patients', 'Species', '9606', (85, 93)) ('SDH', 'Gene', (18, 21)) ('SDH', 'Gene', '6390', (99, 102)) 3628 25973288 Encasement of abdominal aorta and/or IVC without luminal compression is highly suggestive of retroperitoneal lymphoma. ('retroperitoneal lymphoma', 'Disease', 'MESH:D012186', (93, 117)) ('lymphoma', 'Phenotype', 'HP:0002665', (109, 117)) ('retroperitoneal lymphoma', 'Disease', (93, 117)) ('Encasement', 'Var', (0, 10)) ('men', 'Species', '9606', (6, 9)) 3640 25109928 Ocular manifestations of HIF-2 alpha paraganglioma-somatostatinomapolycythemia syndrome A new syndrome of paraganglioma-somatostatinoma-polycythemia caused by somatic gain-of-function HIF2A mutations has been recently described. ('HIF2A', 'Gene', (184, 189)) ('paraganglioma-somatostatinoma-polycythemia', 'Disease', 'MESH:D013005', (106, 148)) ('gain-of-function', 'PosReg', (167, 183)) ('mutations', 'Var', (190, 199)) ('polycythemia', 'Phenotype', 'HP:0001901', (136, 148)) ('HIF-2 alpha paraganglioma-somatostatinomapolycythemia syndrome', 'Disease', 'MESH:C566646', (25, 87)) ('HIF2A', 'Gene', '2034', (184, 189)) ('paraganglioma', 'Phenotype', 'HP:0002668', (37, 50)) ('paraganglioma-somatostatinoma-polycythemia', 'Disease', (106, 148)) ('paraganglioma', 'Phenotype', 'HP:0002668', (106, 119)) ('polycythemia', 'Phenotype', 'HP:0001901', (66, 78)) 3654 25109928 All patients had gain-of-function mutations in the EPAS1 gene (encoding HIF-2A peptide) detected in tumors but not in leukocyte DNA. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('tumors', 'Disease', (100, 106)) ('gain-of-function', 'PosReg', (17, 33)) ('tumors', 'Disease', 'MESH:D009369', (100, 106)) ('EPAS1', 'Gene', '2034', (51, 56)) ('tumors', 'Phenotype', 'HP:0002664', (100, 106)) ('patients', 'Species', '9606', (4, 12)) ('EPAS1', 'Gene', (51, 56)) ('HIF-2A', 'Gene', (72, 78)) ('mutations', 'Var', (34, 43)) ('HIF-2A', 'Gene', '2034', (72, 78)) 3655 25109928 Paraganglioma-somatostatinoma-polycythemia is a new syndrome, and the unique eye lesions clustered with the syndrome suggest that somatic gain-of-function HIF2A mutations play an important role in the pathogenesis of these eye lesions. ('Paraganglioma-somatostatinoma-polycythemia', 'Disease', (0, 42)) ('polycythemia', 'Phenotype', 'HP:0001901', (30, 42)) ('HIF2A', 'Gene', '2034', (155, 160)) ('mutations', 'Var', (161, 170)) ('gain-of-function', 'PosReg', (138, 154)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('Paraganglioma-somatostatinoma-polycythemia', 'Disease', 'MESH:D013005', (0, 42)) ('HIF2A', 'Gene', (155, 160)) 3660 25109928 HIF-2alpha alteration in a transgenic mouse model exhibits marked retinopathy. ('mouse', 'Species', '10090', (38, 43)) ('retinopathy', 'Phenotype', 'HP:0000488', (66, 77)) ('marked retinopathy', 'Phenotype', 'HP:0001141', (59, 77)) ('alteration', 'Var', (11, 21)) ('retinopathy', 'Disease', 'MESH:D012164', (66, 77)) ('HIF-2alpha', 'Gene', (0, 10)) ('retinopathy', 'Disease', (66, 77)) 3662 25109928 Therefore, a HIF2A mutation, along with high erythropoietin levels, may affect the eye, especially the retina, resulting in the ocular abnormalities among patients. ('ocular abnormalities', 'Disease', (128, 148)) ('mutation', 'Var', (19, 27)) ('affect', 'Reg', (72, 78)) ('erythropoietin', 'Gene', '2056', (45, 59)) ('HIF2A', 'Gene', '2034', (13, 18)) ('eye', 'MPA', (83, 86)) ('patients', 'Species', '9606', (155, 163)) ('HIF2A', 'Gene', (13, 18)) ('resulting in', 'Reg', (111, 123)) ('erythropoietin', 'Gene', (45, 59)) ('ocular abnormalities', 'Disease', 'MESH:D005124', (128, 148)) ('ocular abnormalities', 'Phenotype', 'HP:0000478', (128, 148)) 3663 25109928 In addition to the HIF2A mutation, the genes affecting the HIF signaling pathway such as von Hippel-Lindau, succinate dehydrogenase, and prolyl hydroxylase can have mutations found to be associated with neural crest cell tumors, paragangliomas/pheochromocytomas. ('paragangliomas', 'Phenotype', 'HP:0002668', (229, 243)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (229, 261)) ('paragangliomas/pheochromocytomas', 'Disease', (229, 261)) ('HIF2A', 'Gene', (19, 24)) ('HIF2A', 'Gene', '2034', (19, 24)) ('tumors', 'Phenotype', 'HP:0002664', (221, 227)) ('mutation', 'Var', (25, 33)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (89, 106)) ('tumor', 'Phenotype', 'HP:0002664', (221, 226)) ('neural crest cell tumors', 'Disease', 'MESH:C536408', (203, 227)) ('associated', 'Reg', (187, 197)) ('paraganglioma', 'Phenotype', 'HP:0002668', (229, 242)) ('mutations', 'Var', (165, 174)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (244, 261)) ('von Hippel-Lindau', 'Disease', (89, 106)) ('neural crest cell tumors', 'Disease', (203, 227)) 3664 25109928 Dysregulation of the HIF signaling pathway initiates an activation cascade of genes, many of them participating in angiogenesis, abnormal apoptosis, cell migration, and development, processes that can lead to tumorigenesis and may affect tissue-specific development of various organs or structures (as indicated by the presence of a Marfanoid habitus and brain abnormalities), including the eye and retina. ('genes', 'Gene', (78, 83)) ('Dysregulation', 'Var', (0, 13)) ('tissue-specific development of', 'CPA', (238, 268)) ('Marfanoid habitus and brain abnormalities', 'Disease', 'MESH:C565411', (333, 374)) ('Marfanoid habitus', 'Phenotype', 'HP:0001519', (333, 350)) ('affect', 'Reg', (231, 237)) ('tumorigenesis', 'CPA', (209, 222)) ('cell migration', 'CPA', (149, 163)) ('brain abnormalities', 'Phenotype', 'HP:0012443', (355, 374)) ('activation', 'PosReg', (56, 66)) ('tumor', 'Phenotype', 'HP:0002664', (209, 214)) ('lead to', 'Reg', (201, 208)) ('abnormal', 'CPA', (129, 137)) 3665 25109928 As of the time of this report, over 20 patients have been described presenting with HIF2A mutations associated with paraganglioma and polycythemia. ('paraganglioma', 'Phenotype', 'HP:0002668', (116, 129)) ('mutations', 'Var', (90, 99)) ('patients', 'Species', '9606', (39, 47)) ('HIF2A', 'Gene', (84, 89)) ('associated', 'Reg', (100, 110)) ('paraganglioma and polycythemia', 'Disease', 'MESH:D011086', (116, 146)) ('polycythemia', 'Phenotype', 'HP:0001901', (134, 146)) ('HIF2A', 'Gene', '2034', (84, 89)) 3666 25109928 Our series of cases (4 out of 7 examined cases) with somatic HIF2A mutations clearly document the existence of an additional phenotype of this syndrome, i.e. ('HIF2A', 'Gene', '2034', (61, 66)) ('HIF2A', 'Gene', (61, 66)) ('mutations', 'Var', (67, 76)) 3678 23209036 However, germline mutations in 10 different genes have been shown to cause PPGLs, and at least 30% of these tumors are now known to be hereditary. ('PPGLs', 'Chemical', '-', (75, 80)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('cause', 'Reg', (69, 74)) ('tumors', 'Disease', 'MESH:D009369', (108, 114)) ('tumors', 'Disease', (108, 114)) ('PPGLs', 'Disease', (75, 80)) ('tumors', 'Phenotype', 'HP:0002664', (108, 114)) ('germline mutations', 'Var', (9, 27)) 3679 23209036 Importantly, genotype-phenotype correlations have been elucidated: different mutations are associated with specific clinical features and sites of disease, the production of certain catecholamines, and varying frequency of malignancy. ('production', 'MPA', (160, 170)) ('malignancy', 'Disease', 'MESH:D009369', (223, 233)) ('malignancy', 'Disease', (223, 233)) ('mutations', 'Var', (77, 86)) ('catecholamines', 'Chemical', 'MESH:D002395', (182, 196)) ('associated', 'Reg', (91, 101)) 3684 23209036 Populations at increased risk for PPGLs are those with germline mutations of the now identified 10 tumor-susceptibility genes. ('tumor', 'Disease', (99, 104)) ('PPGLs', 'Disease', (34, 39)) ('PPGLs', 'Chemical', '-', (34, 39)) ('tumor', 'Disease', 'MESH:D009369', (99, 104)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('germline mutations', 'Var', (55, 73)) 3690 23209036 the "Black Forest VHL gene mutation (p. Tyr98His)" that is common in south-western Germany is associated with a high risk of pheochromocytoma) may cause geographic variations in the frequency of specific inherited forms of PPGL. ('pheochromocytoma', 'Disease', (125, 141)) ('Tyr98His', 'SUBSTITUTION', 'None', (40, 48)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (125, 141)) ('Tyr98His', 'Var', (40, 48)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (125, 141)) ('cause', 'Reg', (147, 152)) ('PPGL', 'Disease', (223, 227)) ('VHL', 'Disease', (18, 21)) ('VHL', 'Disease', 'MESH:D006623', (18, 21)) ('associated', 'Reg', (94, 104)) ('PPGL', 'Chemical', '-', (223, 227)) 3696 23209036 multiple endocrine neoplasia type 2, neurofibromatosis type 1, von Hippel Lindau syndrome, or succinate dehydrogenase mutations); a family history of pheochromocytoma; an incidentally discovered adrenal mass; pressor response to anesthesia, surgery, or angiography; onset of hypertension at a young age (e.g. ('pheochromocytoma', 'Disease', (150, 166)) ('hypertension', 'Disease', 'MESH:D006973', (275, 287)) ('mutations', 'Var', (118, 127)) ('multiple endocrine neoplasia type 2, neurofibromatosis type 1', 'Gene', '4763', (0, 61)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (9, 28)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (150, 166)) ('von Hippel Lindau syndrome', 'Disease', (63, 89)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (37, 54)) ('neoplasia', 'Phenotype', 'HP:0002664', (19, 28)) ('hypertension', 'Disease', (275, 287)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (150, 166)) ('von Hippel Lindau syndrome', 'Disease', 'MESH:D006623', (63, 89)) ('hypertension', 'Phenotype', 'HP:0000822', (275, 287)) 3700 23209036 This is the case for HNPGL in the Netherlands, given the founder mutations in succinate dehydrogenase subunit D (SDHD). ('succinate dehydrogenase subunit D', 'Gene', (78, 111)) ('SDHD', 'Gene', (113, 117)) ('SDHD', 'Gene', '6392', (113, 117)) ('succinate dehydrogenase subunit D', 'Gene', '6392', (78, 111)) ('mutations', 'Var', (65, 74)) 3752 23209036 Large size is also a risk factor and together with extra-adrenal location accounts for the high risk of malignancy associated with mutations of the SDHB gene. ('mutations', 'Var', (131, 140)) ('SDHB', 'Gene', (148, 152)) ('malignancy', 'Disease', 'MESH:D009369', (104, 114)) ('malignancy', 'Disease', (104, 114)) ('SDHB', 'Gene', '6390', (148, 152)) 3758 23209036 Dr. Eamonn R Maher: In the absence of distant metastases, the presence of a germline SDHB mutation will significantly increase the prior risk of malignancy but cannot definitively inform whether an individual PPGL is malignant or not. ('increase', 'PosReg', (118, 126)) ('metastases', 'Disease', (46, 56)) ('malignancy', 'Disease', 'MESH:D009369', (145, 155)) ('malignancy', 'Disease', (145, 155)) ('PPGL', 'Chemical', '-', (209, 213)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('metastases', 'Disease', 'MESH:D009362', (46, 56)) ('mutation', 'Var', (90, 98)) 3762 23209036 Malignancy is rare in patients with multiple endocrine neoplasia type 2 or von Hippel Lindau syndrome, but is common in those with familial paraganglioma caused by mutations in SDHB. ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (36, 71)) ('von Hippel Lindau syndrome', 'Disease', (75, 101)) ('von Hippel Lindau syndrome', 'Disease', 'MESH:D006623', (75, 101)) ('paraganglioma', 'Phenotype', 'HP:0002668', (140, 153)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (131, 153)) ('SDHB', 'Gene', '6390', (177, 181)) ('common', 'Reg', (110, 116)) ('multiple endocrine neoplasia type 2', 'Disease', (36, 71)) ('SDHB', 'Gene', (177, 181)) ('patients', 'Species', '9606', (22, 30)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (45, 64)) ('neoplasia', 'Phenotype', 'HP:0002664', (55, 64)) ('caused by', 'Reg', (154, 163)) ('Malignancy', 'Disease', (0, 10)) ('mutations', 'Var', (164, 173)) ('familial paraganglioma', 'Disease', (131, 153)) ('Malignancy', 'Disease', 'MESH:D009369', (0, 10)) 3763 23209036 Patients with SDHB mutations are more likely to develop malignant disease and nonparaganglioma neoplasms (e.g. ('paraganglioma', 'Phenotype', 'HP:0002668', (81, 94)) ('develop', 'PosReg', (48, 55)) ('neoplasms', 'Phenotype', 'HP:0002664', (95, 104)) ('mutations', 'Var', (19, 28)) ('Patients', 'Species', '9606', (0, 8)) ('malignant disease', 'Disease', 'MESH:D009369', (56, 73)) ('SDHB', 'Gene', '6390', (14, 18)) ('nonparaganglioma neoplasms', 'Disease', 'MESH:D009369', (78, 104)) ('malignant disease', 'Disease', (56, 73)) ('SDHB', 'Gene', (14, 18)) ('nonparaganglioma neoplasms', 'Disease', (78, 104)) 3788 23209036 Such patients and family members with identified mutations represent important groups who must be periodically screened for PPGLs and in who choice of specific tests, test interpretation and management of disease, including other manifestations, should be individualized according to the affected gene. ('PPGLs', 'Chemical', '-', (124, 129)) ('patients', 'Species', '9606', (5, 13)) ('PPGLs', 'Gene', (124, 129)) ('mutations', 'Var', (49, 58)) 3789 23209036 As an example, periodic biochemical testing in patients with mutations of the SDHB gene should include measurements of plasma methoxytyramine, with test interpretation concentrating on this analyte and normetanephrine. ('SDHB', 'Gene', '6390', (78, 82)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (126, 141)) ('patients', 'Species', '9606', (47, 55)) ('mutations', 'Var', (61, 70)) ('SDHB', 'Gene', (78, 82)) ('normetanephrine', 'Chemical', 'MESH:D009647', (202, 217)) ('plasma methoxytyramine', 'MPA', (119, 141)) 3818 23209036 Whilst some of these cases might ultimately prove to have a mutation in a currently known gene that cannot be detected by standard mutation detection methods, I strongly suspect that further inherited pheochromocytoma/paraganglioma genes will be identified in the next few years. ('paraganglioma', 'Phenotype', 'HP:0002668', (218, 231)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (201, 231)) ('mutation', 'Var', (60, 68)) ('inherited pheochromocytoma', 'Disease', 'MESH:D010673', (191, 217)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (201, 217)) ('pheochromocytoma/paraganglioma', 'Disease', (201, 231)) ('inherited pheochromocytoma', 'Disease', (191, 217)) 3869 25083379 However, in our case, it was interesting that the embolization of tumor vessels decreased the plasma noradrenaline level (Fig. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('embolization', 'Var', (50, 62)) ('tumor', 'Disease', (66, 71)) ('noradrenaline', 'Chemical', 'MESH:D009638', (101, 114)) ('decreased', 'NegReg', (80, 89)) ('plasma noradrenaline level', 'MPA', (94, 120)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) 3886 32957698 We tested 35 dog tumors to determine how likely SDH mutations were. ('mutations', 'Var', (52, 61)) ('tumors', 'Phenotype', 'HP:0002664', (17, 23)) ('SDH', 'Gene', '6390', (48, 51)) ('tumors', 'Disease', (17, 23)) ('tumors', 'Disease', 'MESH:D009369', (17, 23)) ('SDH', 'Gene', (48, 51)) ('dog', 'Species', '9615', (13, 16)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) 3887 32957698 While our data suggest significant numbers of SDH mutations, these mutations do not appear to be associated with tumor aggression. ('mutations', 'Var', (50, 59)) ('tumor aggression', 'Disease', (113, 129)) ('SDH', 'Gene', '6390', (46, 49)) ('tumor aggression', 'Disease', 'MESH:D001523', (113, 129)) ('aggression', 'Phenotype', 'HP:0000718', (119, 129)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('SDH', 'Gene', (46, 49)) ('associated', 'Reg', (97, 107)) 3890 32957698 In humans, immunohistochemistry has proven valuable as a screening technique for SDH mutations. ('mutations', 'Var', (85, 94)) ('SDH', 'Gene', '6390', (81, 84)) ('SDH', 'Gene', (81, 84)) ('humans', 'Species', '9606', (3, 9)) 3891 32957698 Human PCs that lack succinate dehydrogenase B (SDHB) immunoreactivity have a high rate of mutation in the SDH family of genes, while human PCs lacking succinate dehydrogenase A (SDHA) immunoreactivity have mutations in the SDHA gene. ('Human', 'Species', '9606', (0, 5)) ('mutations', 'Var', (206, 215)) ('SDH', 'Gene', '6390', (223, 226)) ('SDH', 'Gene', (178, 181)) ('SDH', 'Gene', (106, 109)) ('succinate dehydrogenase', 'Gene', (151, 174)) ('SDH', 'Gene', (47, 50)) ('succinate dehydrogenase', 'Gene', '6390', (151, 174)) ('succinate dehydrogenase', 'Gene', '6390', (20, 43)) ('succinate dehydrogenase', 'Gene', (20, 43)) ('SDH', 'Gene', (223, 226)) ('SDH', 'Gene', '6390', (178, 181)) ('human', 'Species', '9606', (133, 138)) ('mutation', 'Var', (90, 98)) ('SDH', 'Gene', '6390', (47, 50)) ('SDH', 'Gene', '6390', (106, 109)) 3893 32957698 Interestingly, there was a loss of immunoreactivity for both SDHA and SDHB in four samples (11%), suggesting a mutation in SDHx including SDHA. ('SDH', 'Gene', (123, 126)) ('SDH', 'Gene', (70, 73)) ('SDH', 'Gene', '6390', (138, 141)) ('SDH', 'Gene', (61, 64)) ('SDH', 'Gene', '6390', (70, 73)) ('SDH', 'Gene', (138, 141)) ('mutation', 'Var', (111, 119)) ('SDH', 'Gene', '6390', (123, 126)) ('SDH', 'Gene', '6390', (61, 64)) ('loss', 'NegReg', (27, 31)) ('immunoreactivity', 'MPA', (35, 51)) 3902 32957698 Frequently, these are associated with mutations in the succinate dehydrogenase (SDH) family of genes, with mutations in succinate dehydrogenase subunit B (SDHB) associated with a high likelihood of metastasis/malignancy. ('SDH', 'Gene', '6390', (155, 158)) ('succinate dehydrogenase', 'Gene', (120, 143)) ('malignancy', 'Disease', (209, 219)) ('mutations', 'Var', (107, 116)) ('associated with', 'Reg', (161, 176)) ('succinate dehydrogenase', 'Gene', '6390', (55, 78)) ('SDH', 'Gene', '6390', (80, 83)) ('SDH', 'Gene', (155, 158)) ('succinate dehydrogenase', 'Gene', (55, 78)) ('mutations', 'Var', (38, 47)) ('associated', 'Reg', (22, 32)) ('SDH', 'Gene', (80, 83)) ('succinate dehydrogenase', 'Gene', '6390', (120, 143)) ('malignancy', 'Disease', 'MESH:D009369', (209, 219)) 3904 32957698 Studies in human PCs have found that immunohistochemistry (IHC) is highly correlated with the SDH mutation status. ('mutation status', 'Var', (98, 113)) ('SDH', 'Gene', '6390', (94, 97)) ('SDH', 'Gene', (94, 97)) ('human', 'Species', '9606', (11, 16)) 3905 32957698 For instance, all samples with mutations in SDH family genes lacked SDHB immunoreactivity. ('SDH', 'Gene', (44, 47)) ('mutations', 'Var', (31, 40)) ('lacked', 'NegReg', (61, 67)) ('SDH', 'Gene', (68, 71)) ('SDH', 'Gene', '6390', (44, 47)) ('SDH', 'Gene', '6390', (68, 71)) 3909 32957698 Some mutations have been found in SDH family genes, which may indicate that mutations in these genes may initiate oncogenesis in a similar way to people. ('mutations', 'Var', (76, 85)) ('SDH', 'Gene', (34, 37)) ('initiate', 'Reg', (105, 113)) ('mutations', 'Var', (5, 14)) ('people', 'Species', '9606', (146, 152)) ('oncogenesis', 'CPA', (114, 125)) ('SDH', 'Gene', '6390', (34, 37)) 3920 32957698 Human studies have found that 75% of samples with SDHA mutations lacked immunoreactivity for SDHA and SDHB and that 90% of samples with SDHB, C, D, or SDHAF2 mutations had immunoreactivity for SDHA and lacked immunoreactivity for SDHB. ('immunoreactivity', 'MPA', (172, 188)) ('Human', 'Species', '9606', (0, 5)) ('SDHAF2', 'Gene', (151, 157)) ('mutations', 'Var', (55, 64)) ('immunoreactivity', 'MPA', (72, 88)) ('SDHAF2', 'Gene', '476065', (151, 157)) ('lacked', 'NegReg', (65, 71)) ('SDHA', 'Gene', (50, 54)) ('SDHB', 'Gene', (136, 140)) ('SDHA', 'MPA', (193, 197)) ('mutations', 'Var', (158, 167)) 3921 32957698 When this is applied to the samples in our study, these patterns suggest that 29 out of the 35 (82.8%) samples have a mutation in at least one of the SDH family genes (Figure 2). ('SDH', 'Gene', (150, 153)) ('mutation', 'Var', (118, 126)) ('SDH', 'Gene', '6390', (150, 153)) 3923 32957698 However, as inactivation of SDHA does not lead to tumorigenesis, this may represent a somatic hypermethylation of the promoter region, leading to an accumulation of succinate and later an inhibition of demethylase enzymes. ('demethylase enzymes', 'Enzyme', (202, 221)) ('succinate', 'MPA', (165, 174)) ('SDHA', 'Gene', (28, 32)) ('tumor', 'Disease', 'MESH:D009369', (50, 55)) ('inhibition', 'NegReg', (188, 198)) ('accumulation', 'PosReg', (149, 161)) ('inactivation', 'Var', (12, 24)) ('succinate', 'Chemical', 'MESH:D019802', (165, 174)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('tumor', 'Disease', (50, 55)) 3926 32957698 These findings do suggest that IHC has a similar utility in narrowing candidate mutations in pheochromocytomas in dogs; given, in particular, the relatively higher cost of sequencing, restricting the set of possible candidate genes using immunohistochemistry would be helpful in future sequencing studies. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('mutations', 'Var', (80, 89)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (93, 110)) ('pheochromocytomas', 'Disease', (93, 110)) ('dogs', 'Species', '9615', (114, 118)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (93, 110)) 3927 32957698 However, determining the true utility of SDH immunohistochemistry would require sequencing information and additional case information; if immunohistochemistry is associated with specific mutations and/or mutations in specific genes are closely associated with clinical behavior, immunohistochemistry would become an important tool in case management. ('mutations', 'Var', (205, 214)) ('SDH', 'Gene', (41, 44)) ('associated', 'Reg', (245, 255)) ('genes', 'Gene', (227, 232)) ('mutations', 'Var', (188, 197)) ('SDH', 'Gene', '6390', (41, 44)) 3928 32957698 Canine pheochromocytomas have similar immunohistochemical characteristics to those previously reported in human tumors, with approximately 82% showing immunohistochemical evidence of an SDH family mutation. ('human', 'Species', '9606', (106, 111)) ('Canine', 'Species', '9615', (0, 6)) ('pheochromocytomas', 'Disease', (7, 24)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (7, 24)) ('tumors', 'Disease', (112, 118)) ('SDH', 'Gene', '6390', (186, 189)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('tumors', 'Phenotype', 'HP:0002664', (112, 118)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (7, 23)) ('tumors', 'Disease', 'MESH:D009369', (112, 118)) ('SDH', 'Gene', (186, 189)) ('mutation', 'Var', (197, 205)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (7, 24)) 3932 32960387 Meta-[211At]astatobenzylguanidine (211At-MABG) has been proposed for the treatment of pheochromocytoma. ('pheochromocytoma', 'Disease', 'MESH:D010673', (86, 102)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (86, 102)) ('211At-MABG', 'Chemical', 'MESH:C078685', (35, 45)) ('Meta-[211At]astatobenzylguanidine', 'Chemical', 'MESH:C520658', (0, 33)) ('Meta-[211At]', 'Var', (0, 12)) ('pheochromocytoma', 'Disease', (86, 102)) 3940 32960387 The absorbed doses of 211At-MABG in the adrenal glands, heart wall, and liver were higher than those of free 211At. ('211At', 'Chemical', '-', (22, 27)) ('211At-MABG', 'Chemical', 'MESH:C078685', (22, 32)) ('211At', 'Chemical', '-', (109, 114)) ('higher', 'PosReg', (83, 89)) ('211At-MABG', 'Var', (22, 32)) 3941 32960387 The absorbed doses of 211At-MABG in organs expressing the norepinephrine transporter were higher than those of free 211At. ('211At', 'Chemical', '-', (22, 27)) ('211At-MABG', 'Chemical', 'MESH:C078685', (22, 32)) ('211At', 'Chemical', '-', (116, 121)) ('higher', 'PosReg', (90, 96)) ('211At-MABG', 'Var', (22, 32)) 3950 32960387 131I-MIBG, an analog of guanethidine, concentrates in adrenergic tissue by the same mechanism as that of norepinephrine through the norepinephrine transporter (NET). ('norepinephrine', 'Chemical', 'MESH:D009638', (132, 146)) ('guanethidine', 'Chemical', 'MESH:D006145', (24, 36)) ('131I-MIBG', 'Var', (0, 9)) ('norepinephrine', 'Chemical', 'MESH:D009638', (105, 119)) ('131I-MIBG', 'Chemical', '-', (0, 9)) ('norepinephrine transporter', 'MPA', (132, 158)) ('concentrates in', 'MPA', (38, 53)) ('rat', 'Species', '10116', (45, 48)) 3956 32960387 Since the decay pathway is 100% alpha-particle emission (5.87 and 7.45 MeV in 42% and 58% of the decays, respectively) during the decay of 211At at a half-life of 7.2 h, 211At is one of the nuclides available for TAT. ('nuclides', 'Chemical', '-', (190, 198)) ('211At', 'Chemical', '-', (170, 175)) ('211At', 'Chemical', '-', (139, 144)) ('alpha-particle emission', 'MPA', (32, 55)) ('TAT', 'Chemical', '-', (213, 216)) ('211At', 'Var', (139, 144)) 3981 32960387 In this study, 211At refers to "free astatine," which likely consists not only of 211At-, but also, to some extent, other oxidation states. ('astatine', 'Chemical', 'MESH:D001246', (37, 45)) ('211At', 'Var', (15, 20)) ('211At', 'Chemical', '-', (15, 20)) ('211At', 'Chemical', '-', (82, 87)) ('211At-', 'Var', (82, 88)) 4008 32960387 The stomach had a high concentration of free 211At for up to 24 h, with the highest activity concentration observed after 1 h. On the other hand, the accumulation of 211At-MABG was higher than that of free 211At in the heart and adrenal glands. ('211At', 'Chemical', '-', (45, 50)) ('accumulation', 'MPA', (151, 163)) ('211At', 'Chemical', '-', (207, 212)) ('rat', 'Species', '10116', (30, 33)) ('211At-MABG', 'Chemical', 'MESH:C078685', (167, 177)) ('higher', 'PosReg', (182, 188)) ('211At', 'Chemical', '-', (167, 172)) ('rat', 'Species', '10116', (100, 103)) ('211At-MABG', 'Var', (167, 177)) 4009 32960387 211At-MABG showed faster clearance in each organ as well as in blood and plasma. ('clearance', 'MPA', (25, 34)) ('211At-MABG', 'Var', (0, 10)) ('faster', 'PosReg', (18, 24)) ('211At-MABG', 'Chemical', 'MESH:C078685', (0, 10)) 4015 32960387 The dosimetric calculations for free 211At and 211At-MABG showed that the thyroid received the highest absorbed dose per injection activity, with free 211At = 15.1 Gy/MBq and 211At-MABG = 4.08 Gy/MBq followed by the stomach wall in the mouse model (Table 4). ('211At', 'Chemical', '-', (151, 156)) ('211At-MABG =', 'Var', (175, 187)) ('211At', 'Chemical', '-', (37, 42)) ('211At-MABG', 'Chemical', 'MESH:C078685', (47, 57)) ('free 211At', 'Var', (146, 156)) ('211At', 'Chemical', '-', (47, 52)) ('211At-MABG', 'Chemical', 'MESH:C078685', (175, 185)) ('211At', 'Chemical', '-', (175, 180)) ('mouse', 'Species', '10090', (236, 241)) 4016 32960387 Relatively higher absorbed doses in extrathyroidal tissues and organs were found in the heart, lung, and stomach wall for free 211At than for 211At-MABG. ('211At', 'Chemical', '-', (142, 147)) ('free 211At', 'Var', (122, 132)) ('211At-MABG', 'Chemical', 'MESH:C078685', (142, 152)) ('rat', 'Species', '10116', (39, 42)) ('higher', 'PosReg', (11, 17)) ('211At', 'Chemical', '-', (127, 132)) ('absorbed doses', 'MPA', (18, 32)) 4028 32960387 Previous studies also demonstrated higher activity concentrations of free 211At than of radioiodine in extrathyroidal organs and tissues, suggesting that the uptake/transport of free 211At is dependent on mechanisms other than the sodium iodide symporter (NIS). ('free 211At', 'Var', (178, 188)) ('activity', 'MPA', (42, 50)) ('uptake/transport', 'MPA', (158, 174)) ('sodium iodide symporter', 'Gene', '114479', (231, 254)) ('211At', 'Chemical', '-', (74, 79)) ('211At', 'Chemical', '-', (183, 188)) ('sodium iodide symporter', 'Gene', (231, 254)) ('rat', 'Species', '10116', (29, 32)) ('radioiodine', 'Chemical', 'MESH:C000614965', (88, 99)) ('rat', 'Species', '10116', (58, 61)) ('rat', 'Species', '10116', (106, 109)) 4031 32960387 The mean absorbed dose in the thyroid was higher for free 211At than for 211At-MABG, which is explained by the much higher uptake of free 211At than of 211At-MABG. ('211At', 'Chemical', '-', (152, 157)) ('211At-MABG', 'Chemical', 'MESH:C078685', (73, 83)) ('absorbed dose', 'MPA', (9, 22)) ('higher', 'PosReg', (116, 122)) ('211At', 'Chemical', '-', (73, 78)) ('211At-MABG', 'Chemical', 'MESH:C078685', (152, 162)) ('higher', 'PosReg', (42, 48)) ('free 211At', 'Var', (53, 63)) ('211At', 'Chemical', '-', (138, 143)) ('211At', 'Chemical', '-', (58, 63)) 4036 32960387 The uptake of 211At-MABG was higher in the heart and adrenal gland, which have higher densities of NET than in other organs and glands. ('higher', 'PosReg', (29, 35)) ('211At-MABG', 'Var', (14, 24)) ('uptake', 'MPA', (4, 10)) ('211At-MABG', 'Chemical', 'MESH:C078685', (14, 24)) 4044 32960387 estimated the human-equivalent internal radiation absorbed doses of 124I-MIBG using PET/CT data in a murine xenograft model. ('124I-MIBG', 'Var', (68, 77)) ('PET', 'Gene', (84, 87)) ('human', 'Species', '9606', (14, 19)) ('murine', 'Species', '10090', (101, 107)) ('124I-MIBG', 'Chemical', '-', (68, 77)) ('PET', 'Gene', '22095', (84, 87)) 4047 32960387 211At-MABG is a promising radiopharmaceutical for the treatment of malignant pheochromocytoma. ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (67, 93)) ('malignant pheochromocytoma', 'Disease', (67, 93)) ('211At-MABG', 'Var', (0, 10)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (77, 93)) ('211At-MABG', 'Chemical', 'MESH:C078685', (0, 10)) 4048 32960387 The distribution of 211At-MABG showed different uptakes in several organs compared with free 211At. ('211At', 'Chemical', '-', (93, 98)) ('uptakes', 'MPA', (48, 55)) ('211At-MABG', 'Var', (20, 30)) ('211At-MABG', 'Chemical', 'MESH:C078685', (20, 30)) ('211At', 'Chemical', '-', (20, 25)) 4057 32132978 In recent years, temozolomide (TMZ) showed great promise in some MMP patients, especially those with SDHB germline mutation. ('MMP', 'Disease', (65, 68)) ('SDHB', 'Gene', (101, 105)) ('temozolomide', 'Chemical', 'MESH:D000077204', (17, 29)) ('germline mutation', 'Var', (106, 123)) ('patients', 'Species', '9606', (69, 77)) ('SDHB', 'Gene', '6390', (101, 105)) ('TMZ', 'Chemical', 'MESH:D000077204', (31, 34)) 4063 32132978 Molecular profiling of the tumor tissue of the patient revealed hypermethylation of the O6-methylguanine-DNA-methyltransferase (MGMT) promoter and a negative immunostaining for MGMT. ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('patient', 'Species', '9606', (47, 54)) ('MGMT', 'Gene', '4255', (128, 132)) ('O6-methylguanine-DNA-methyltransferase', 'Gene', '4255', (88, 126)) ('MGMT', 'Gene', (128, 132)) ('tumor', 'Disease', (27, 32)) ('O6-methylguanine-DNA-methyltransferase', 'Gene', (88, 126)) ('MGMT', 'Gene', (177, 181)) ('MGMT', 'Gene', '4255', (177, 181)) ('immunostaining', 'MPA', (158, 172)) ('hypermethylation', 'Var', (64, 80)) ('negative', 'NegReg', (149, 157)) ('tumor', 'Disease', 'MESH:D009369', (27, 32)) 4065 32132978 TMZ is effective, especially in patients with SDHB mutation, which can be explained by the silencing of MGMT expression as a consequence of MGMT promoter hypermethylation in SDHB-mutated tumors. ('MGMT', 'Gene', (104, 108)) ('patients', 'Species', '9606', (32, 40)) ('MGMT', 'Gene', '4255', (104, 108)) ('SDHB', 'Gene', '6390', (46, 50)) ('SDHB', 'Gene', (46, 50)) ('tumor', 'Phenotype', 'HP:0002664', (187, 192)) ('SDHB', 'Gene', '6390', (174, 178)) ('silencing', 'NegReg', (91, 100)) ('mutation', 'Var', (51, 59)) ('tumors', 'Disease', (187, 193)) ('tumors', 'Disease', 'MESH:D009369', (187, 193)) ('tumors', 'Phenotype', 'HP:0002664', (187, 193)) ('SDHB', 'Gene', (174, 178)) ('MGMT', 'Gene', (140, 144)) ('TMZ', 'Chemical', 'MESH:D000077204', (0, 3)) ('MGMT', 'Gene', '4255', (140, 144)) 4066 32132978 Although, in general, patients with SDHB mutation or MGMT promoter hypermethylation have better response to TMZ, there are also exceptions. ('TMZ', 'Chemical', 'MESH:D000077204', (108, 111)) ('better', 'PosReg', (89, 95)) ('SDHB', 'Gene', '6390', (36, 40)) ('response to TMZ', 'MPA', (96, 111)) ('SDHB', 'Gene', (36, 40)) ('patients', 'Species', '9606', (22, 30)) ('mutation', 'Var', (41, 49)) ('MGMT', 'Gene', (53, 57)) ('MGMT', 'Gene', '4255', (53, 57)) ('promoter hypermethylation', 'Var', (58, 83)) 4075 32132978 Radionuclide therapy includes 131I-MIBG therapy and peptide receptor radionuclide therapy (PRRT, such as 177Lu-DOTATATE), which can only be used for the treatment of tumors with uptake of the tracer. ('tumors', 'Disease', 'MESH:D009369', (166, 172)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (30, 39)) ('tumor', 'Phenotype', 'HP:0002664', (166, 171)) ('131I-MIBG', 'Var', (30, 39)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (105, 119)) ('peptide', 'Protein', (52, 59)) ('tumors', 'Disease', (166, 172)) ('tumors', 'Phenotype', 'HP:0002664', (166, 172)) 4080 32132978 TMZ was effective in MPP patients, especially those with SDHB germline mutation. ('MPP', 'Disease', (21, 24)) ('SDHB', 'Gene', '6390', (57, 61)) ('patients', 'Species', '9606', (25, 33)) ('SDHB', 'Gene', (57, 61)) ('MPP', 'Disease', 'MESH:D010673', (21, 24)) ('germline mutation', 'Var', (62, 79)) ('TMZ', 'Chemical', 'MESH:D000077204', (0, 3)) 4117 32132978 Thirty five to forty percent of patients with PHEO/PGL have germline genetic mutation, and the rate is 50% in patients with MPP. ('PHEO', 'Disease', 'MESH:D010673', (46, 50)) ('patients', 'Species', '9606', (32, 40)) ('MPP', 'Disease', 'MESH:D010673', (124, 127)) ('PHEO', 'Disease', (46, 50)) ('PGL', 'Disease', 'MESH:D010235', (51, 54)) ('PHEO', 'Phenotype', 'HP:0002666', (46, 50)) ('germline genetic mutation', 'Var', (60, 85)) ('MPP', 'Disease', (124, 127)) ('PGL', 'Phenotype', 'HP:0002668', (51, 54)) ('PGL', 'Disease', (51, 54)) ('patients', 'Species', '9606', (110, 118)) 4119 32132978 Mutations in SDHB are one of the most common causes of familial PHEO/PGL, and tend to be associated with MPPs, particularly MPPs that afflict younger patients. ('associated with', 'Reg', (89, 104)) ('PHEO', 'Disease', 'MESH:D010673', (64, 68)) ('PGL', 'Disease', 'MESH:D010235', (69, 72)) ('MPP', 'Disease', 'MESH:D010673', (124, 127)) ('PHEO', 'Disease', (64, 68)) ('SDHB', 'Gene', '6390', (13, 17)) ('MPP', 'Disease', 'MESH:D010673', (105, 108)) ('causes', 'Reg', (45, 51)) ('PGL', 'Phenotype', 'HP:0002668', (69, 72)) ('Mutations', 'Var', (0, 9)) ('MPP', 'Disease', (124, 127)) ('SDHB', 'Gene', (13, 17)) ('patients', 'Species', '9606', (150, 158)) ('PHEO', 'Phenotype', 'HP:0002666', (64, 68)) ('MPP', 'Disease', (105, 108)) ('PGL', 'Disease', (69, 72)) 4124 32132978 MGMT is a highly-efficient DNA repair enzyme, which can repair methylated DNA. ('MGMT', 'Gene', (0, 4)) ('methylated', 'Var', (63, 73)) ('MGMT', 'Gene', '4255', (0, 4)) 4133 32132978 Ten patients had a SDHB germline mutation. ('germline', 'Var', (24, 32)) ('SDHB', 'Gene', '6390', (19, 23)) ('patients', 'Species', '9606', (4, 12)) ('SDHB', 'Gene', (19, 23)) 4135 32132978 PFS was significantly longer in patients with SDHB mutation than in patients without mutations (19.7 vs. 2.9 months), 80% of PR patients exhibited MGMT deficience. ('patients', 'Species', '9606', (32, 40)) ('SDHB', 'Gene', '6390', (46, 50)) ('SDHB', 'Gene', (46, 50)) ('exhibited', 'Reg', (137, 146)) ('patients', 'Species', '9606', (68, 76)) ('mutation', 'Var', (51, 59)) ('MGMT', 'Gene', (147, 151)) ('patients', 'Species', '9606', (128, 136)) ('MGMT', 'Gene', '4255', (147, 151)) 4136 32132978 In a separate cohort involving 190 PHEO/PGLs, SDHB mutation was associated with hypermethylation of the MGMT promoter and low expression of MGMT. ('PHEO', 'Disease', (35, 39)) ('MGMT', 'Gene', (104, 108)) ('MGMT', 'Gene', '4255', (104, 108)) ('SDHB', 'Gene', '6390', (46, 50)) ('hypermethylation', 'MPA', (80, 96)) ('SDHB', 'Gene', (46, 50)) ('expression', 'MPA', (126, 136)) ('PGL', 'Phenotype', 'HP:0002668', (40, 43)) ('PGL', 'Disease', (40, 43)) ('PHEO', 'Phenotype', 'HP:0002666', (35, 39)) ('low', 'NegReg', (122, 125)) ('mutation', 'Var', (51, 59)) ('PGL', 'Disease', 'MESH:D010235', (40, 43)) ('PHEO', 'Disease', 'MESH:D010673', (35, 39)) ('MGMT', 'Gene', (140, 144)) ('MGMT', 'Gene', '4255', (140, 144)) 4138 32132978 And the result can be explained by the silencing of MGMT expression as a consequence of MGMT promoter hypermethylation in SDHB-mutated tumors. ('MGMT', 'Gene', (52, 56)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('MGMT', 'Gene', '4255', (52, 56)) ('SDHB', 'Gene', '6390', (122, 126)) ('MGMT', 'Gene', (88, 92)) ('silencing', 'NegReg', (39, 48)) ('tumors', 'Disease', (135, 141)) ('tumors', 'Disease', 'MESH:D009369', (135, 141)) ('MGMT', 'Gene', '4255', (88, 92)) ('SDHB', 'Gene', (122, 126)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('hypermethylation', 'Var', (102, 118)) 4139 32132978 However, some other studies showed that, like our case, TMZ was also effective in patients with non-SDHB mutations. ('TMZ', 'Chemical', 'MESH:D000077204', (56, 59)) ('patients', 'Species', '9606', (82, 90)) ('mutations', 'Var', (105, 114)) ('SDHB', 'Gene', '6390', (100, 104)) ('SDHB', 'Gene', (100, 104)) 4140 32132978 Tumors carrying mutations in Krebs cycle-related genes, such as SDHx and FH, exhibit CpG island hypermethylation, which was caused by the accumulation of specific metabolites. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('SDHx', 'Chemical', '-', (64, 68)) ('SDHx', 'Gene', (64, 68)) ('mutations', 'Var', (16, 25)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('Krebs', 'Chemical', '-', (29, 34)) ('hypermethylation', 'Var', (96, 112)) 4142 32132978 Our patient did not have any known germline pathogenic genetic change, but showed MGMT promoter hypermethylation, suggesting that other factors might also contribute DNA hypermethylation. ('patient', 'Species', '9606', (4, 11)) ('MGMT', 'Gene', (82, 86)) ('MGMT', 'Gene', '4255', (82, 86)) ('contribute', 'Reg', (155, 165)) ('hypermethylation', 'Var', (96, 112)) 4146 32132978 In contrast, in a patient with both SDHB mutation and MGMT promoter hypermethylation (patient 6), the partial response to TMZ lasted only 8 month. ('SDHB', 'Gene', '6390', (36, 40)) ('SDHB', 'Gene', (36, 40)) ('MGMT', 'Gene', (54, 58)) ('mutation', 'Var', (41, 49)) ('patient', 'Species', '9606', (86, 93)) ('MGMT', 'Gene', '4255', (54, 58)) ('patient', 'Species', '9606', (18, 25)) ('TMZ', 'Chemical', 'MESH:D000077204', (122, 125)) 4147 32132978 Other two patients with SDHB mutation (patient 9 and patient 14) even had PD after TMZ treatment. ('mutation', 'Var', (29, 37)) ('TMZ', 'Chemical', 'MESH:D000077204', (83, 86)) ('patient', 'Species', '9606', (39, 46)) ('patient', 'Species', '9606', (10, 17)) ('SDHB', 'Gene', '6390', (24, 28)) ('patients', 'Species', '9606', (10, 18)) ('SDHB', 'Gene', (24, 28)) ('patient', 'Species', '9606', (53, 60)) 4149 32132978 In general, patients with SDHB mutation or MGMT promoter hypermethylation respond better to TMZ. ('patients', 'Species', '9606', (12, 20)) ('better', 'PosReg', (82, 88)) ('mutation', 'Var', (31, 39)) ('SDHB', 'Gene', '6390', (26, 30)) ('SDHB', 'Gene', (26, 30)) ('MGMT', 'Gene', '4255', (43, 47)) ('MGMT', 'Gene', (43, 47)) ('TMZ', 'Chemical', 'MESH:D000077204', (92, 95)) 4151 32132978 Patients whose tumors carried a methylated MGMT promoter benefited more from TMZ treatment. ('tumors', 'Phenotype', 'HP:0002664', (15, 21)) ('benefited', 'PosReg', (57, 66)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('tumors', 'Disease', 'MESH:D009369', (15, 21)) ('TMZ', 'Chemical', 'MESH:D000077204', (77, 80)) ('Patients', 'Species', '9606', (0, 8)) ('MGMT', 'Gene', '4255', (43, 47)) ('MGMT', 'Gene', (43, 47)) ('methylated', 'Var', (32, 42)) ('tumors', 'Disease', (15, 21)) 4167 32132978 A recent retrospective study showed that, in 12 MPP patients with SDHB gene mutation, all patients had tumor reduction (12-100% by RECIST) upon CVD, which suggests CVD therapy probably works better in patients with SDHB mutation. ('SDHB', 'Gene', (66, 70)) ('SDHB', 'Gene', '6390', (215, 219)) ('MPP', 'Disease', 'MESH:D010673', (48, 51)) ('patients', 'Species', '9606', (201, 209)) ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('SDHB', 'Gene', (215, 219)) ('MPP', 'Disease', (48, 51)) ('tumor reduction', 'Disease', (103, 118)) ('SDHB', 'Gene', '6390', (66, 70)) ('mutation', 'Var', (76, 84)) ('patients', 'Species', '9606', (90, 98)) ('tumor reduction', 'Disease', 'MESH:D009369', (103, 118)) ('patients', 'Species', '9606', (52, 60)) 4168 32132978 However, CVD is not effective in all patients with SDHB mutation (patient 1 and patient 2 in Table 1). ('patient', 'Species', '9606', (37, 44)) ('patients', 'Species', '9606', (37, 45)) ('patient', 'Species', '9606', (66, 73)) ('SDHB', 'Gene', '6390', (51, 55)) ('SDHB', 'Gene', (51, 55)) ('mutation', 'Var', (56, 64)) ('patient', 'Species', '9606', (80, 87)) 4246 32049819 In our study, the number of extreme hypertensive or hypotensive episodes were similar between the 2 groups; however, the mean maximal systolic and diastolic BP was significantly higher in TPA during the operation. ('TPA', 'Chemical', '-', (188, 191)) ('hypotensive', 'Disease', (52, 63)) ('hypertensive', 'Disease', 'MESH:D006973', (36, 48)) ('higher', 'PosReg', (178, 184)) ('hypertensive', 'Disease', (36, 48)) ('TPA', 'Var', (188, 191)) ('hypotensive', 'Disease', 'MESH:D007022', (52, 63)) 4387 31248124 Patients with high norepinephrine had higher systolic BP (cutoff = twice the upper reference value, p = 0.025, cutoff = 10 times the upper reference value (p = 0.013). ('systolic BP', 'MPA', (45, 56)) ('high norepinephrine', 'Var', (14, 33)) ('Patients', 'Species', '9606', (0, 8)) ('high norepinephrine', 'Phenotype', 'HP:0003345', (14, 33)) ('higher', 'PosReg', (38, 44)) ('BP', 'Chemical', '-', (54, 56)) ('norepinephrine', 'Chemical', 'MESH:D009638', (19, 33)) ('higher systolic BP', 'Phenotype', 'HP:0004421', (38, 56)) 4388 31248124 The tumor SUVmax and the tumor-to liver ratio was higher in patients with high norepinephrine (cutoff = 10 times the upper reference value, p = 0.009). ('tumor', 'Disease', (4, 9)) ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('higher', 'PosReg', (50, 56)) ('high', 'Var', (74, 78)) ('tumor', 'Disease', (25, 30)) ('patients', 'Species', '9606', (60, 68)) ('high norepinephrine', 'Phenotype', 'HP:0003345', (74, 93)) ('tumor', 'Disease', 'MESH:D009369', (4, 9)) ('norepinephrine', 'Chemical', 'MESH:D009638', (79, 93)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) ('tumor', 'Disease', 'MESH:D009369', (25, 30)) 4468 31312604 performed a systemic review and meta-analysis of the role of this type of imaging in detecting paragangliomas and found that per-lesion detection rates of 68Ga-DOTA-SST PET were consistently higher (ranging from 92% to 100%) than other imaging modalities, including 18F-fluorohydroxyphenylalanine (18F-FDOPA) PET, 18F-FDG PET, and 123/131I-metaiodobenzylguanidine (123/131I-MIBG) scintigraphy. ('paragangliomas', 'Disease', (95, 109)) ('higher', 'PosReg', (191, 197)) ('paraganglioma', 'Phenotype', 'HP:0002668', (95, 108)) ('68Ga-DOTA-SST', 'Var', (155, 168)) ('MIBG', 'Chemical', '-', (374, 378)) ('68Ga-DOTA', 'Chemical', '-', (155, 164)) ('paragangliomas', 'Disease', 'MESH:D010235', (95, 109)) ('paragangliomas', 'Phenotype', 'HP:0002668', (95, 109)) 4504 27022413 Multimodal Somatostatin Receptor Theranostics Using [64Cu]Cu-/[177Lu]Lu-DOTA-(Tyr3)octreotate and AN-238 in a Mouse Pheochromocytoma Model Pheochromocytomas and extra-adrenal paragangliomas (PHEO/PGLs) are rare catecholamine-producing chromaffin cell tumors. ('paragangliomas', 'Phenotype', 'HP:0002668', (175, 189)) ('catecholamine', 'Chemical', 'MESH:D002395', (211, 224)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (139, 155)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (116, 132)) ('Lu-DOTA-(Tyr3)octreotate', 'Chemical', '-', (69, 93)) ('chromaffin', 'Chemical', '-', (235, 245)) ('Cu', 'Chemical', 'MESH:D003300', (55, 57)) ('Pheochromocytoma', 'Disease', (116, 132)) ('177Lu', 'Chemical', 'MESH:C000615061', (63, 68)) ('Somatostatin', 'Gene', '20604', (11, 23)) ('Mouse', 'Species', '10090', (110, 115)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (139, 156)) ('tumors', 'Phenotype', 'HP:0002664', (251, 257)) ('Pheochromocytomas', 'Disease', (139, 156)) ('Pheochromocytoma', 'Disease', (139, 155)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (139, 155)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (161, 189)) ('[64Cu]', 'Var', (52, 58)) ('tumor', 'Phenotype', 'HP:0002664', (251, 256)) ('chromaffin cell tumors', 'Phenotype', 'HP:0002666', (235, 257)) ('AN-238', 'Var', (98, 104)) ('tumors', 'Disease', (251, 257)) ('extra-adrenal paragangliomas', 'Disease', (161, 189)) ('Somatostatin', 'Gene', (11, 23)) ('AN', 'Chemical', 'MESH:D000431', (98, 100)) ('PHEO', 'Gene', (191, 195)) ('Cu', 'Chemical', 'MESH:D003300', (58, 60)) ('PHEO', 'Gene', '114618', (191, 195)) ('tumors', 'Disease', 'MESH:D009369', (251, 257)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (139, 156)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (116, 132)) 4505 27022413 Overexpression of somatostatin type 2 receptors (SSTR2) in PHEO/PGLs promotes interest in applying therapies using somatostatin analogs linked to radionuclides and/or cytotoxic compounds, such as [177Lu]Lu-DOTA-(Tyr3)octreotate (DOTATATE) and AN-238. ('[177Lu]Lu-DOTA-', 'Var', (196, 211)) ('PHEO', 'Gene', (59, 63)) ('SSTR2', 'Gene', (49, 54)) ('radionuclides', 'Chemical', 'MESH:D011868', (146, 159)) ('AN-238', 'Chemical', 'MESH:C110845', (243, 249)) ('DOTATATE', 'Chemical', '-', (229, 237)) ('[177Lu]Lu-DOTA-(Tyr3)octreotate', 'Chemical', '-', (196, 227)) ('PHEO', 'Gene', '114618', (59, 63)) 4509 27022413 Therapeutic studies showed substantial reduction of tumor growth and tumor-related renal monoamine excretion in tumor-bearing mice after treatment with [177Lu]Lu-DOTATATE compared to AN-238 and doxorubicin. ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('mice', 'Species', '10090', (126, 130)) ('doxorubicin', 'Chemical', 'MESH:D004317', (194, 205)) ('tumor', 'Disease', (52, 57)) ('tumor', 'Disease', (69, 74)) ('AN-238', 'Chemical', 'MESH:C110845', (183, 189)) ('tumor', 'Disease', 'MESH:D009369', (112, 117)) ('reduction', 'NegReg', (39, 48)) ('monoamine', 'Chemical', '-', (89, 98)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('[177Lu]Lu-DOTATATE', 'Var', (152, 170)) ('tumor', 'Disease', (112, 117)) ('tumor', 'Disease', 'MESH:D009369', (52, 57)) ('tumor', 'Disease', 'MESH:D009369', (69, 74)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (152, 170)) 4519 27022413 Some support for the radionuclide approach is provided by clinical reports on [177Lu]Lu- and [90Y]Y-labeled somatostatin analogs leading to longer progression-free survival, mainly in gastroenteropancreatic neuroendocrine tumors, but also in metastatic neuroendocrine tumors, including PHEO/PGLs. ('PHEO', 'Gene', '114618', (286, 290)) ('tumor', 'Phenotype', 'HP:0002664', (268, 273)) ('longer', 'PosReg', (140, 146)) ('neuroendocrine tumors', 'Disease', (253, 274)) ('[177Lu]Lu-', 'Var', (78, 88)) ('[177Lu', 'Chemical', 'MESH:C000615061', (78, 84)) ('gastroenteropancreatic neuroendocrine tumors', 'Disease', 'MESH:C535650', (184, 228)) ('tumors', 'Phenotype', 'HP:0002664', (268, 274)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (207, 228)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (207, 228)) ('PHEO', 'Gene', (286, 290)) ('gastroenteropancreatic neuroendocrine tumors', 'Disease', (184, 228)) ('tumors', 'Phenotype', 'HP:0002664', (222, 228)) ('tumor', 'Phenotype', 'HP:0002664', (222, 227)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (253, 274)) ('radionuclide', 'Chemical', 'MESH:D011868', (21, 33)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (253, 274)) 4525 27022413 This study had two objectives: 1. characterization of the MPC-mCherry tumor model for preclinical evaluation of somatostatin type 2 receptor (SSTR2)-targeting theranostic applications; and 2. use of the model for preclinical evaluation of receptor-targeted therapies using [177Lu]Lu-DOTA-(Tyr3)octreotate (DOTATATE) and AN-238 compared to systemic therapy using doxorubicin for the treatment of PHEO/PGLs. ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) ('PHEO', 'Gene', (395, 399)) ('tumor', 'Disease', (70, 75)) ('[177Lu]Lu-DOTA-(Tyr3)octreotate', 'Chemical', '-', (273, 304)) ('DOTATATE', 'Chemical', '-', (306, 314)) ('PHEO', 'Gene', '114618', (395, 399)) ('[177Lu]Lu-DOTA-(Tyr3', 'Var', (273, 293)) ('doxorubicin', 'Chemical', 'MESH:D004317', (362, 373)) ('AN-238', 'Chemical', 'MESH:C110845', (320, 326)) 4535 27022413 Protein bands were detected using the primary antibodies anti-SSTR2 [UMB1, ab134152] (Abcam, Cambridge, UK), anti-chromogranin A [C-20, sc1488] (Santa Cruz Biotechnology, Heidelberg, Germany), anti-ss-actin [A5316] (Sigma-Aldrich). ('chromogranin A', 'Gene', (114, 128)) ('anti-ss-actin', 'Var', (193, 206)) ('chromogranin A', 'Gene', '12652', (114, 128)) 4542 27022413 Endogenous peroxidase was blocked with PBS containing 0.3% (v/v) H2O2. ('PBS', 'Chemical', 'MESH:D007854', (39, 42)) ('H2O2', 'Chemical', 'MESH:D006861', (65, 69)) ('H2O2', 'Var', (65, 69)) ('Endogenous peroxidase', 'Enzyme', (0, 21)) 4597 27022413 Most importantly, by co-injection of somatostatin analogs, all imaging and distribution studies similarly showed significantly reduced radiotracer uptake in tumors (Figure 3 D-F) in the order of [natLu]Lu-DOTATATE > octreotide > AN-238. ('tumors', 'Phenotype', 'HP:0002664', (157, 163)) ('tumors', 'Disease', (157, 163)) ('tumors', 'Disease', 'MESH:D009369', (157, 163)) ('[natLu]Lu-DOTATATE', 'Chemical', '-', (195, 213)) ('AN-238', 'Chemical', 'MESH:C110845', (229, 235)) ('radiotracer uptake', 'MPA', (135, 153)) ('octreotide', 'Chemical', 'MESH:D015282', (216, 226)) ('tumor', 'Phenotype', 'HP:0002664', (157, 162)) ('reduced', 'NegReg', (127, 134)) ('reduced radiotracer uptake', 'Phenotype', 'HP:0031219', (127, 153)) ('[natLu]Lu-DOTATATE', 'Var', (195, 213)) 4598 27022413 Ex vivo radiotracer distribution revealed octreotide and [natLu]Lu-DOTATATE to significantly inhibit radiotracer uptake also in pancreas due to physiologic mSSTR expression. ('inhibit', 'NegReg', (93, 100)) ('[natLu]Lu-DOTATATE', 'Chemical', '-', (57, 75)) ('[natLu]Lu-DOTATATE', 'Var', (57, 75)) ('octreotide', 'Chemical', 'MESH:D015282', (42, 52)) ('radiotracer uptake', 'MPA', (101, 119)) 4601 27022413 Size and fluorescence intensity of tumors (Figure 4 A) appeared similar at therapy start (15 days pci) and reduced after treatment (30 days pci) with doxorubicin, AN-238, and [177Lu]Lu-DOTATATE compared to the control. ('AN-238', 'Chemical', 'MESH:C110845', (163, 169)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (175, 193)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('doxorubicin', 'Chemical', 'MESH:D004317', (150, 161)) ('reduced', 'NegReg', (107, 114)) ('tumors', 'Phenotype', 'HP:0002664', (35, 41)) ('AN-238', 'Var', (163, 169)) ('tumors', 'Disease', (35, 41)) ('tumors', 'Disease', 'MESH:D009369', (35, 41)) ('fluorescence intensity', 'MPA', (9, 31)) ('[177Lu]Lu-DOTATATE', 'Var', (175, 193)) 4603 27022413 After [177Lu]Lu-DOTATATE treatment, tumors declined continuously until 30 days pci (t1/2.= 2.8 days). ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (6, 24)) ('tumors', 'Disease', 'MESH:D009369', (36, 42)) ('declined', 'NegReg', (43, 51)) ('tumor', 'Phenotype', 'HP:0002664', (36, 41)) ('tumors', 'Disease', (36, 42)) ('[177Lu]Lu-DOTATATE', 'Var', (6, 24)) ('tumors', 'Phenotype', 'HP:0002664', (36, 42)) 4606 27022413 Notably, doubling time of tumor volume was significantly lower in animals treated with AN-238 compared to doxorubicin. ('doubling time', 'CPA', (9, 22)) ('AN-238', 'Chemical', 'MESH:C110845', (87, 93)) ('tumor', 'Disease', 'MESH:D009369', (26, 31)) ('doxorubicin', 'Chemical', 'MESH:D004317', (106, 117)) ('AN-238', 'Var', (87, 93)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('tumor', 'Disease', (26, 31)) ('lower', 'NegReg', (57, 62)) 4607 27022413 In relation to the control group, single treatment with doxorubicin, AN-238, or [177Lu]Lu-DOTATATE produced significant reduction of tumor growth in vivo (Table 2). ('AN-238', 'Chemical', 'MESH:C110845', (69, 75)) ('[177Lu]Lu-DOTATATE', 'Var', (80, 98)) ('tumor', 'Disease', 'MESH:D009369', (133, 138)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('reduction', 'NegReg', (120, 129)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (80, 98)) ('tumor', 'Disease', (133, 138)) ('doxorubicin', 'Chemical', 'MESH:D004317', (56, 67)) 4608 27022413 Additionally, combinations of [177Lu]Lu-DOTATATE with doxorubicin (simultaneously) or AN-238 (consecutively) exerted similar effects on tumor growth compared to single [177Lu]Lu-DOTATATE treatment (Table 2, Figure S8 A-B, Table S4). ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (30, 48)) ('doxorubicin', 'Chemical', 'MESH:D004317', (54, 65)) ('combinations', 'Interaction', (14, 26)) ('tumor', 'Disease', 'MESH:D009369', (136, 141)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (168, 186)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('[177Lu]Lu-DOTATATE', 'Var', (30, 48)) ('tumor', 'Disease', (136, 141)) ('AN-238', 'Chemical', 'MESH:C110845', (86, 92)) 4610 27022413 After [177Lu]Lu-DOTATATE treatment of MPC-mCherry tumor-bearing animals, in vivo PLI and SPECT imaging (Figure 4 C-E) revealed strong accumulation of 177Lu activity in tumors and, to a lesser extent, in kidneys one day after therapy start ( 16 days pci). ('177Lu activity', 'MPA', (150, 164)) ('tumors', 'Phenotype', 'HP:0002664', (168, 174)) ('accumulation', 'PosReg', (134, 146)) ('tumor', 'Disease', (168, 173)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (6, 24)) ('tumors', 'Disease', (168, 174)) ('tumors', 'Disease', 'MESH:D009369', (168, 174)) ('tumor', 'Disease', 'MESH:D009369', (50, 55)) ('[177Lu', 'Var', (6, 12)) ('177Lu', 'Chemical', 'MESH:C000615061', (150, 155)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('tumor', 'Disease', 'MESH:D009369', (168, 173)) ('tumor', 'Disease', (50, 55)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) ('177Lu', 'Chemical', 'MESH:C000615061', (7, 12)) 4614 27022413 Additionally, combinations of [177Lu]Lu-DOTATATE with doxorubicin or AN-238 exerted similar effects on 177Lu activity in tumors compared to single [177Lu]Lu-DOTATATE treatment (Figure S8 D, Table S4). ('177Lu', 'Chemical', 'MESH:C000615061', (103, 108)) ('177Lu', 'Chemical', 'MESH:C000615061', (31, 36)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (30, 48)) ('177Lu', 'Chemical', 'MESH:C000615061', (148, 153)) ('combinations', 'Interaction', (14, 26)) ('doxorubicin', 'Chemical', 'MESH:D004317', (54, 65)) ('AN-238', 'Chemical', 'MESH:C110845', (69, 75)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('177Lu activity', 'MPA', (103, 117)) ('tumors', 'Disease', (121, 127)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (147, 165)) ('tumors', 'Phenotype', 'HP:0002664', (121, 127)) ('tumors', 'Disease', 'MESH:D009369', (121, 127)) ('[177Lu]Lu-DOTATATE', 'Var', (30, 48)) 4622 27022413 Notably, [177Lu]Lu-DOTATATE was 2-fold more effective in reducing the overall renal monoamine excretion compared to doxorubicin and AN-238. ('monoamine', 'Chemical', '-', (84, 93)) ('AN-238', 'Chemical', 'MESH:C110845', (132, 138)) ('[177Lu]Lu-DOTATATE', 'Var', (9, 27)) ('doxorubicin', 'Chemical', 'MESH:D004317', (116, 127)) ('renal monoamine excretion', 'MPA', (78, 103)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (9, 27)) ('reducing', 'NegReg', (57, 65)) 4628 27022413 The mSSTR2 pattern and morphology of AN-238-treated tumors appeared similar to control. ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('AN-238-treated', 'Var', (37, 51)) ('mSSTR2', 'Gene', '20606', (4, 10)) ('AN-238', 'Chemical', 'MESH:C110845', (37, 43)) ('tumors', 'Phenotype', 'HP:0002664', (52, 58)) ('tumors', 'Disease', 'MESH:D009369', (52, 58)) ('tumors', 'Disease', (52, 58)) ('mSSTR2', 'Gene', (4, 10)) 4629 27022413 In contrast, [177Lu]Lu-DOTATATE-treated tumors showed condensed mSSTR2 spots irrespective of any membranous localization as well as a dispersed tumor cell structure with irregularly-shaped nuclei and large intercellular spaces. ('tumor', 'Disease', (144, 149)) ('tumors', 'Phenotype', 'HP:0002664', (40, 46)) ('[177Lu', 'Var', (13, 19)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (13, 31)) ('tumors', 'Disease', 'MESH:D009369', (40, 46)) ('tumor', 'Disease', 'MESH:D009369', (40, 45)) ('mSSTR2', 'Gene', (64, 70)) ('mSSTR2', 'Gene', '20606', (64, 70)) ('tumor', 'Disease', 'MESH:D009369', (144, 149)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('tumor', 'Disease', (40, 45)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) ('tumors', 'Disease', (40, 46)) 4630 27022413 Notably, Western blot analysis revealed no significant differences in the relative mSSTR2 tumor levels per chromogranin A-positive tumor cells after AN-238 and [177Lu]Lu-DOTATATE treatment compared to control (Figure 6 B-C). ('mSSTR2', 'Gene', (83, 89)) ('AN-238', 'Chemical', 'MESH:C110845', (149, 155)) ('tumor', 'Disease', 'MESH:D009369', (131, 136)) ('mSSTR2', 'Gene', '20606', (83, 89)) ('chromogranin A', 'Gene', (107, 121)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('tumor', 'Disease', (90, 95)) ('[177Lu]Lu-DOTATATE', 'Var', (160, 178)) ('tumor', 'Disease', (131, 136)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (160, 178)) ('chromogranin A', 'Gene', '12652', (107, 121)) ('tumor', 'Disease', 'MESH:D009369', (90, 95)) 4631 27022413 In therapy groups, body weight tended to decrease immediately after both doxorubicin and AN-238, but not after [177Lu]Lu-DOTATATE treatment. ('AN-238', 'Var', (89, 95)) ('decrease', 'NegReg', (41, 49)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (111, 129)) ('AN-238', 'Chemical', 'MESH:C110845', (89, 95)) ('doxorubicin', 'Chemical', 'MESH:D004317', (73, 84)) ('body weight', 'CPA', (19, 30)) 4632 27022413 We found white blood cells to be significantly reduced to 1.7 x 106/mL after both doxorubicin and AN-238 treatment, but only non-significantly lowered to 2.4 x 106/mL after [177Lu]Lu-DOTATATE treatment. ('white blood cells', 'CPA', (9, 26)) ('AN-238', 'Var', (98, 104)) ('doxorubicin', 'Chemical', 'MESH:D004317', (82, 93)) ('AN-238', 'Chemical', 'MESH:C110845', (98, 104)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (173, 191)) ('reduced', 'NegReg', (47, 54)) 4633 27022413 Additionally, combinations of [177Lu]Lu-DOTATATE with doxorubicin or AN-238 tended to increase adverse effects (Figure S8 E-F). ('adverse', 'MPA', (95, 102)) ('increase', 'PosReg', (86, 94)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (30, 48)) ('doxorubicin', 'Chemical', 'MESH:D004317', (54, 65)) ('combinations', 'Interaction', (14, 26)) ('AN-238', 'Chemical', 'MESH:C110845', (69, 75)) ('AN-238', 'Gene', (69, 75)) ('[177Lu]Lu-DOTATATE', 'Var', (30, 48)) 4636 27022413 Most importantly, [177Lu]Lu-DOTATATE treatment was by far the most efficient therapeutic strategy in the MPC-mCherry model compared to AN-238 and doxorubicin. ('AN-238', 'Chemical', 'MESH:C110845', (135, 141)) ('MPC-mCherry', 'Disease', (105, 116)) ('[177Lu]Lu-DOTATATE', 'Var', (18, 36)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (18, 36)) ('doxorubicin', 'Chemical', 'MESH:D004317', (146, 157)) 4640 27022413 Moreover, small animal imaging and autoradiographic applications benefit from [64Cu]Cu-labeled radiotracers in terms of long radionuclide half-life and low maximal ss+ emission energy, allowing for higher imaging resolution and longer experimental durations. ('imaging', 'MPA', (205, 212)) ('[64Cu]Cu-labeled', 'Var', (78, 94)) ('64Cu', 'Chemical', 'MESH:C000615411', (79, 83)) ('Cu', 'Chemical', 'MESH:D003300', (84, 86)) ('radionuclide', 'Chemical', 'MESH:D011868', (125, 137)) ('Cu', 'Chemical', 'MESH:D003300', (81, 83)) ('higher', 'PosReg', (198, 204)) 4645 27022413 However, a certain variation of mSSTR2-levels between tumors of different animals, as well as between clonal tumor cell sub-populations within individual lesions reflect the heterogeneity of MPC-mCherry tumors, as has been described for human PHEO/PGLs as a consequence of genetic lesions and epigenetic changes, as well as specific copy number alterations. ('tumor', 'Disease', (203, 208)) ('tumor', 'Disease', 'MESH:D009369', (54, 59)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('tumor', 'Disease', 'MESH:D009369', (203, 208)) ('genetic lesions', 'Disease', 'MESH:D020022', (273, 288)) ('PHEO', 'Gene', (243, 247)) ('tumors', 'Phenotype', 'HP:0002664', (54, 60)) ('tumors', 'Phenotype', 'HP:0002664', (203, 209)) ('MPC-mCherry tumors', 'Disease', (191, 209)) ('mSSTR2', 'Gene', (32, 38)) ('MPC-mCherry tumors', 'Disease', 'MESH:D009369', (191, 209)) ('PHEO', 'Gene', '114618', (243, 247)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('epigenetic changes', 'Var', (293, 311)) ('tumors', 'Disease', (54, 60)) ('copy number alterations', 'Var', (333, 356)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('tumors', 'Disease', (203, 209)) ('human', 'Species', '9606', (237, 242)) ('tumors', 'Disease', 'MESH:D009369', (54, 60)) ('tumors', 'Disease', 'MESH:D009369', (203, 209)) ('genetic lesions', 'Disease', (273, 288)) ('mSSTR2', 'Gene', '20606', (32, 38)) ('tumor', 'Disease', (54, 59)) ('tumor', 'Disease', (109, 114)) 4654 27022413 In mice, PLI, PET and ex vivo radiotracer distribution studies using [64Cu]Cu-DOTATATE similarly showed that, after co-injection, [natLu]Lu-DOTATATE exhibit superior tumor targeting efficiency to octreotide and AN-238. ('tumor', 'Disease', 'MESH:D009369', (166, 171)) ('tumor', 'Phenotype', 'HP:0002664', (166, 171)) ('AN-238', 'Chemical', 'MESH:C110845', (211, 217)) ('64Cu', 'Chemical', 'MESH:C000615411', (70, 74)) ('mice', 'Species', '10090', (3, 7)) ('[natLu]Lu-DOTATATE', 'Chemical', '-', (130, 148)) ('tumor', 'Disease', (166, 171)) ('Cu-DOTATATE', 'Chemical', '-', (75, 86)) ('superior', 'PosReg', (157, 165)) ('octreotide', 'Chemical', 'MESH:D015282', (196, 206)) ('[natLu]Lu-DOTATATE', 'Var', (130, 148)) 4665 27022413 The superior therapeutic efficacy of [177Lu]Lu-DOTATATE reflects its ability for high-affinity mSSTR2 binding as well as for exerting 177Lu-related bystander and crossfire effects assumed to allow for overcoming tumor-specific escape strategies based on, e.g., multi-drug resistance, hypoxia, and irregular vascularization. ('hypoxia', 'Disease', 'MESH:D000860', (284, 291)) ('177Lu', 'Chemical', 'MESH:C000615061', (38, 43)) ('binding', 'Interaction', (102, 109)) ('hypoxia', 'Disease', (284, 291)) ('therapeutic efficacy', 'CPA', (13, 33)) ('[177Lu]Lu-DOTATATE', 'Var', (37, 55)) ('overcoming', 'PosReg', (201, 211)) ('mSSTR2', 'Gene', (95, 101)) ('tumor', 'Disease', 'MESH:D009369', (212, 217)) ('mSSTR2', 'Gene', '20606', (95, 101)) ('177Lu', 'Chemical', 'MESH:C000615061', (134, 139)) ('tumor', 'Phenotype', 'HP:0002664', (212, 217)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (37, 55)) ('tumor', 'Disease', (212, 217)) ('drug resistance', 'Phenotype', 'HP:0020174', (267, 282)) 4667 27022413 Supporting this, only [177Lu]Lu-DOTATATE therapy severely affected the histologic integrity of tumors. ('tumors', 'Disease', 'MESH:D009369', (95, 101)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) ('affected', 'Reg', (58, 66)) ('[177Lu]Lu-DOTATATE', 'Var', (22, 40)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('tumors', 'Disease', (95, 101)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (22, 40)) 4673 27022413 However, superior anti-tumor efficacy of AN-238 to 2-pyrrolinodoxorubicin on tumor cells with elevated SSTR2 levels has been demonstrated in many studies. ('AN-238', 'Var', (41, 47)) ('tumor', 'Disease', 'MESH:D009369', (23, 28)) ('tumor', 'Disease', 'MESH:D009369', (77, 82)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('2-pyrrolinodoxorubicin', 'Chemical', 'MESH:C098751', (51, 73)) ('tumor', 'Phenotype', 'HP:0002664', (77, 82)) ('tumor', 'Disease', (23, 28)) ('SSTR2', 'MPA', (103, 108)) ('tumor', 'Disease', (77, 82)) ('AN-238', 'Chemical', 'MESH:C110845', (41, 47)) 4676 27022413 Reduced white blood cells result from the cytotoxic effects of doxorubicin on rapidly dividing multipotent hematopoietic progenitor cells as well as from the capability of AN-238 and [177Lu]Lu-DOTATATE for targeting mSSTR2 on lymphocytes and inflammatory cells. ('white blood cells', 'CPA', (8, 25)) ('AN-238', 'Var', (172, 178)) ('[177Lu]Lu-DOTATATE', 'Var', (183, 201)) ('Reduced white blood cells', 'Phenotype', 'HP:0001882', (0, 25)) ('AN-238', 'Chemical', 'MESH:C110845', (172, 178)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (183, 201)) ('doxorubicin', 'Chemical', 'MESH:D004317', (63, 74)) ('mSSTR2', 'Gene', '20606', (216, 222)) ('cytotoxic effects', 'CPA', (42, 59)) ('mSSTR2', 'Gene', (216, 222)) 4677 27022413 Importantly, agonist-induced downregulation of mSSTR2 was not present in tumors after [177Lu]Lu-DOTATATE and AN-238 treatment. ('AN-238', 'Var', (109, 115)) ('downregulation', 'NegReg', (29, 43)) ('tumors', 'Disease', 'MESH:D009369', (73, 79)) ('[177Lu]Lu-DOTATATE', 'Var', (86, 104)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('AN-238', 'Chemical', 'MESH:C110845', (109, 115)) ('mSSTR2', 'Gene', (47, 53)) ('tumors', 'Phenotype', 'HP:0002664', (73, 79)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (86, 104)) ('mSSTR2', 'Gene', '20606', (47, 53)) ('tumors', 'Disease', (73, 79)) 4679 27022413 However, our pilot studies on combining [177Lu]Lu-DOTATATE with doxorubicin (simultaneously) or AN-238 (in quick succession) revealed similar therapeutic effects compared to single [177Lu]Lu-DOTATATE, thereby tending to increase adverse effects. ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (40, 58)) ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (181, 199)) ('doxorubicin', 'Chemical', 'MESH:D004317', (64, 75)) ('combining', 'Interaction', (30, 39)) ('[177Lu]Lu-DOTATATE', 'Var', (40, 58)) ('AN-238', 'Chemical', 'MESH:C110845', (96, 102)) 4683 27022413 Nevertheless, the model does recapitulate the clinical situation in which [68Ga]Ga-DOTATATE has been shown to be a superior imaging agent compared to others for metastatic PHEO/PGLs due to mutations of the succinate dehydrogenase subunit 2 (SDHB) gene. ('SDHB', 'Gene', (241, 245)) ('due to', 'Reg', (182, 188)) ('PHEO', 'Gene', (172, 176)) ('SDHB', 'Gene', '67680', (241, 245)) ('succinate dehydrogenase subunit 2', 'Gene', (206, 239)) ('succinate dehydrogenase subunit 2', 'Gene', '67680', (206, 239)) ('Ga-DOTATATE', 'Chemical', '-', (80, 91)) ('mutations', 'Var', (189, 198)) ('PHEO', 'Gene', '114618', (172, 176)) 4684 27022413 This is also in agreement with other findings of high SSTR2 expression in PHEO/PGLs due to SDHB mutations. ('PHEO', 'Gene', (74, 78)) ('expression', 'MPA', (60, 70)) ('SDHB', 'Gene', '67680', (91, 95)) ('PHEO', 'Gene', '114618', (74, 78)) ('SDHB', 'Gene', (91, 95)) ('SSTR2', 'Gene', (54, 59)) ('mutations', 'Var', (96, 105)) 4685 27022413 These clinical findings support the possibility that utility of [177Lu]Lu-DOTATATE reported here in the MPC-mCherry model may indeed translate to the clinic, and particularly to metastatic PHEO/PGLs due to SDHB mutations, which carry a high metastatic risk responsible for 40-50% of all cases of malignant disease. ('[177Lu]Lu-DOTATATE', 'Chemical', '-', (64, 82)) ('SDHB', 'Gene', '67680', (206, 210)) ('mutations', 'Var', (211, 220)) ('PHEO', 'Gene', (189, 193)) ('malignant disease', 'Disease', 'MESH:D009369', (296, 313)) ('malignant disease', 'Disease', (296, 313)) ('SDHB', 'Gene', (206, 210)) ('PHEO', 'Gene', '114618', (189, 193)) 4691 26574647 Prior studies have identified gigantism as a feature of a number of monogenic disorders, including mutations in the aryl hydrocarbon receptor interacting protein (AIP) gene, multiple endocrine neoplasia types 1 and 4, McCune Albright Syndrome, Carney Complex, and the paraganglioma, pheochromocytoma and pituitary adenoma association (3PA) due to succinate dehydrogenase defects. ('succinate dehydrogenase', 'Gene', '6390', (347, 370)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (283, 299)) ('Carney Complex', 'Disease', (244, 258)) ('paraganglioma', 'Phenotype', 'HP:0002668', (268, 281)) ('pheochromocytoma', 'Disease', (283, 299)) ('aryl hydrocarbon receptor interacting protein (AIP)', 'Gene', '9049', (116, 167)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (283, 299)) ('glioma', 'Phenotype', 'HP:0009733', (275, 281)) ('neoplasia', 'Phenotype', 'HP:0002664', (193, 202)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (174, 202)) ('multiple endocrine neoplasia', 'Disease', (174, 202)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (183, 202)) ('succinate dehydrogenase', 'Gene', (347, 370)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (304, 321)) ('McCune Albright Syndrome', 'Disease', (218, 242)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (304, 321)) ('pituitary adenoma', 'Disease', (304, 321)) ('Carney Complex', 'Disease', 'MESH:D056733', (244, 258)) ('mutations', 'Var', (99, 108)) ('paraganglioma', 'Disease', (268, 281)) ('aryl hydrocarbon receptor interacting protein (AIP', 'Gene', (116, 166)) ('paraganglioma', 'Disease', 'MESH:D010235', (268, 281)) 4699 26574647 When pituitary gigantism is suspected, the clinician should consider the presence of disorders known to be associated with GH-secreting pituitary tumors, including McCune Albright syndrome (MAS), Carney complex (CNC), multiple endocrine neoplasia types 1 and 4 (MEN 1, MEN 4), familial isolated pituitary adenoma (FIPA), the paraganglioma, pheochromocytoma and pituitary adenoma association (3PA) due to succinate dehydrogenase defects, and X-linked acrogigantism (X-LAG). ('pituitary adenoma', 'Phenotype', 'HP:0002893', (295, 312)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (295, 312)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (218, 246)) ('pheochromocytoma', 'Disease', (340, 356)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (340, 356)) ('succinate dehydrogenase', 'Gene', '6390', (404, 427)) ('multiple endocrine neoplasia', 'Disease', (218, 246)) ('MEN 1', 'Gene', '4221', (262, 267)) ('paraganglioma', 'Phenotype', 'HP:0002668', (325, 338)) ('glioma', 'Phenotype', 'HP:0009733', (332, 338)) ('McCune Albright syndrome', 'Disease', (164, 188)) ('isolated pituitary adenoma', 'Phenotype', 'HP:0011761', (286, 312)) ('pituitary gigantism', 'Disease', 'MESH:D005877', (5, 24)) ('familial isolated pituitary adenoma', 'Disease', 'MESH:C566321', (277, 312)) ('MEN 1', 'Gene', (262, 267)) ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('MEN 4', 'Gene', (269, 274)) ('GH-secreting pituitary tumors', 'Disease', 'MESH:D049912', (123, 152)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (361, 378)) ('defects', 'Var', (428, 435)) ('tumors', 'Phenotype', 'HP:0002664', (146, 152)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (361, 378)) ('succinate dehydrogenase', 'Gene', (404, 427)) ('neoplasia', 'Phenotype', 'HP:0002664', (237, 246)) ('paraganglioma', 'Disease', (325, 338)) ('pituitary adenoma', 'Disease', (361, 378)) ('paraganglioma', 'Disease', 'MESH:D010235', (325, 338)) ('pituitary gigantism', 'Disease', (5, 24)) ('McCune Albright syndrome', 'Disease', 'MESH:D005357', (164, 188)) ('MEN 4', 'Gene', '1027', (269, 274)) ('familial isolated pituitary adenoma', 'Disease', (277, 312)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (227, 246)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (340, 356)) ('GH-secreting pituitary tumors', 'Disease', (123, 152)) 4732 26574647 Activating mutations of Gsalpha, the stimulatory subunit of the heterotrimeric G protein complex responsible for intracellular signaling of G protein-coupled receptors (GPCRs), are the source of the clinical manifestations found in MAS. ('mutations', 'Var', (11, 20)) ('GPCR', 'Gene', (169, 173)) ('Activating', 'PosReg', (0, 10)) ('GPCR', 'Gene', '442206', (169, 173)) ('Gsalpha', 'Gene', (24, 31)) ('MAS', 'Disease', (232, 235)) ('Gsalpha', 'Gene', '2778', (24, 31)) 4739 26574647 Mutations in the gene encoding for the tumor suppressor nuclear protein menin lead to the development of neoplasia. ('menin', 'Gene', (72, 77)) ('lead to', 'Reg', (78, 85)) ('neoplasia', 'Phenotype', 'HP:0002664', (105, 114)) ('tumor suppressor', 'Gene', (39, 55)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('neoplasia', 'Disease', (105, 114)) ('Mutations', 'Var', (0, 9)) ('tumor suppressor', 'Gene', '7248', (39, 55)) ('neoplasia', 'Disease', 'MESH:D009369', (105, 114)) ('menin', 'Gene', '4221', (72, 77)) 4745 26574647 Recently, a patient with pituitary gigantism was found to have a deletion in the 5'UTR of CDKN1B leading to reduced transcriptional activity of the gene. ('transcriptional activity', 'MPA', (116, 140)) ('pituitary gigantism', 'Disease', (25, 44)) ('pituitary gigantism', 'Disease', 'MESH:D005877', (25, 44)) ('CDKN1B', 'Gene', (90, 96)) ('reduced', 'NegReg', (108, 115)) ('deletion in', 'Var', (65, 76)) ('patient', 'Species', '9606', (12, 19)) ('CDKN1B', 'Gene', '1027', (90, 96)) 4747 26574647 Mutations in the gene encoding the regulatory subunit 1alpha of protein kinase A (PRKAR1A) are responsible for the majority of cases of CNC. ('CNC', 'Disease', (136, 139)) ('PRKAR1A', 'Gene', (82, 89)) ('responsible', 'Reg', (95, 106)) ('PRKAR1A', 'Gene', '5573', (82, 89)) ('Mutations', 'Var', (0, 9)) 4749 26574647 Inactivating mutations in the gene encoding the aryl hydrocarbon receptor interacting protein (AIP) have been identified in about 20% of families with FIPA. ('identified', 'Reg', (110, 120)) ('aryl hydrocarbon receptor interacting protein (AIP', 'Gene', (48, 98)) ('aryl hydrocarbon receptor interacting protein (AIP)', 'Gene', '9049', (48, 99)) ('Inactivating mutations', 'Var', (0, 22)) 4750 26574647 Germline mutations in AIP are associated with large pituitary adenomas in children/adolescents and young adults, and usually are associated with somatotropinomas in 35% of the cases. ('Germline mutations', 'Var', (0, 18)) ('somatotropinomas', 'Disease', (145, 161)) ('associated', 'Reg', (129, 139)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (52, 70)) ('AIP', 'Gene', '9049', (22, 25)) ('AIP', 'Gene', (22, 25)) ('somatotropinomas', 'Disease', 'MESH:D049912', (145, 161)) ('pituitary adenomas', 'Disease', (52, 70)) ('children', 'Species', '9606', (74, 82)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (52, 69)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (52, 70)) ('associated with', 'Reg', (30, 45)) 4751 26574647 A recent study compared 96 patients with germline AIP mutations and pituitary adenomas to 232 matched AIP-negative acromegaly controls. ('pituitary adenomas', 'Phenotype', 'HP:0002893', (68, 86)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (68, 85)) ('AIP', 'Gene', '9049', (50, 53)) ('pituitary adenomas', 'Disease', (68, 86)) ('acromegaly', 'Disease', (115, 125)) ('mutations', 'Var', (54, 63)) ('AIP', 'Gene', (50, 53)) ('acromegaly', 'Phenotype', 'HP:0000845', (115, 125)) ('patients', 'Species', '9606', (27, 35)) ('AIP', 'Gene', '9049', (102, 105)) ('AIP', 'Gene', (102, 105)) ('acromegaly', 'Disease', 'MESH:D000172', (115, 125)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (68, 86)) 4752 26574647 The population with AIP mutations was predominantly young and male with presentation during childhood. ('child', 'Species', '9606', (92, 97)) ('mutations', 'Var', (24, 33)) ('AIP', 'Gene', (20, 23)) ('AIP', 'Gene', '9049', (20, 23)) 4755 26574647 GH-secreting tumors associated with AIP mutations were more likely to cosecrete prolactin Another recent study examined AIP mutational status of FIPA and young pituitary adenoma patients, and found 37 FIPA families and 34 sporadic patients had AIP mutations. ('AIP', 'Gene', '9049', (244, 247)) ('patients', 'Species', '9606', (231, 239)) ('tumors', 'Phenotype', 'HP:0002664', (13, 19)) ('AIP', 'Gene', '9049', (36, 39)) ('pituitary adenoma', 'Disease', (160, 177)) ('GH-secreting tumors', 'Disease', 'MESH:D049912', (0, 19)) ('AIP', 'Gene', (36, 39)) ('patients', 'Species', '9606', (178, 186)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (160, 177)) ('mutations', 'Var', (40, 49)) ('prolactin', 'Gene', (80, 89)) ('AIP', 'Gene', '9049', (120, 123)) ('prolactin', 'Gene', '5617', (80, 89)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (160, 177)) ('AIP', 'Gene', (120, 123)) ('GH-secreting tumors', 'Disease', (0, 19)) ('AIP', 'Gene', (244, 247)) ('tumor', 'Phenotype', 'HP:0002664', (13, 18)) 4756 26574647 One-quarter of the AIP mutation carriers screened were diagnosed with pituitary disease, justifying this screening and suggesting a variable clinical course for patients carrying AIP mutations Patients with AIP mutations underwent more surgical interventions and had a poor response to somatostatin analogues with lower decreases in GH and IGF-I and less tumor shrinkage. ('Patients', 'Species', '9606', (193, 201)) ('poor response to somatostatin', 'Phenotype', 'HP:0000824', (269, 298)) ('AIP', 'Gene', '9049', (179, 182)) ('somatostatin', 'Gene', '6750', (286, 298)) ('pituitary disease', 'Phenotype', 'HP:0011747', (70, 87)) ('somatostatin', 'Gene', (286, 298)) ('tumor', 'Phenotype', 'HP:0002664', (355, 360)) ('mutations', 'Var', (183, 192)) ('AIP', 'Gene', '9049', (19, 22)) ('IGF-I', 'Gene', (340, 345)) ('AIP', 'Gene', (179, 182)) ('IGF-I', 'Gene', '3479', (340, 345)) ('AIP', 'Gene', '9049', (207, 210)) ('GH', 'Gene', '2688', (333, 335)) ('decreases', 'NegReg', (320, 329)) ('AIP', 'Gene', (19, 22)) ('patients', 'Species', '9606', (161, 169)) ('pituitary disease', 'Disease', 'MESH:D010900', (70, 87)) ('AIP', 'Gene', (207, 210)) ('mutations', 'Var', (211, 220)) ('tumor', 'Disease', (355, 360)) ('pituitary disease', 'Disease', (70, 87)) ('tumor', 'Disease', 'MESH:D009369', (355, 360)) 4758 26574647 Germline mutations in genes coding for the succinate dehydrogenase (SDH) subunits A, B, C, and D have been identified in familial paragangliomas/pheochromocytomas and other tumors. ('Germline mutations', 'Var', (0, 18)) ('glioma', 'Phenotype', 'HP:0009733', (137, 143)) ('paraganglioma', 'Phenotype', 'HP:0002668', (130, 143)) ('paragangliomas', 'Phenotype', 'HP:0002668', (130, 144)) ('familial paragangliomas/pheochromocytomas', 'Disease', (121, 162)) ('succinate dehydrogenase', 'Gene', (43, 66)) ('SDH', 'Gene', (68, 71)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (145, 161)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (145, 162)) ('identified', 'Reg', (107, 117)) ('tumor', 'Phenotype', 'HP:0002664', (173, 178)) ('familial paragangliomas/pheochromocytomas', 'Disease', 'MESH:C531777', (121, 162)) ('tumors', 'Disease', (173, 179)) ('tumors', 'Disease', 'MESH:D009369', (173, 179)) ('tumors', 'Phenotype', 'HP:0002664', (173, 179)) ('SDH', 'Gene', '6390', (68, 71)) ('succinate dehydrogenase', 'Gene', '6390', (43, 66)) 4759 26574647 The first GH-secreting pituitary adenoma caused by a SDHD mutation in a patient with familial paragangliomas was described in 2012. ('familial paragangliomas', 'Disease', 'MESH:D010235', (85, 108)) ('SDHD', 'Gene', (53, 57)) ('SDHD', 'Gene', '6392', (53, 57)) ('pituitary adenoma', 'Disease', (23, 40)) ('mutation', 'Var', (58, 66)) ('patient', 'Species', '9606', (72, 79)) ('paragangliomas', 'Phenotype', 'HP:0002668', (94, 108)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (23, 40)) ('paraganglioma', 'Phenotype', 'HP:0002668', (94, 107)) ('familial paragangliomas', 'Disease', (85, 108)) ('GH', 'Gene', '2688', (10, 12)) ('caused by', 'Reg', (41, 50)) ('glioma', 'Phenotype', 'HP:0009733', (101, 107)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (23, 40)) 4760 26574647 A patient with an SDHB mutation, a somatotropinoma and paragangliomas was subsequently identified in addition to other patients with pituitary tumors and SDH defects. ('SDHB', 'Gene', (18, 22)) ('SDHB', 'Gene', '6390', (18, 22)) ('patient', 'Species', '9606', (119, 126)) ('tumors', 'Phenotype', 'HP:0002664', (143, 149)) ('mutation', 'Var', (23, 31)) ('glioma', 'Phenotype', 'HP:0009733', (62, 68)) ('patients', 'Species', '9606', (119, 127)) ('paragangliomas', 'Disease', (55, 69)) ('paragangliomas', 'Disease', 'MESH:D010235', (55, 69)) ('pituitary tumors and SDH defects', 'Disease', 'MESH:D010911', (133, 165)) ('paraganglioma', 'Phenotype', 'HP:0002668', (55, 68)) ('paragangliomas', 'Phenotype', 'HP:0002668', (55, 69)) ('somatotropinoma', 'Disease', 'MESH:D049912', (35, 50)) ('somatotropinoma', 'Disease', (35, 50)) ('patient', 'Species', '9606', (2, 9)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) 4766 26574647 The Xq26.3 microduplications were initially identified by whole-genome array comparative genomic hybridization (aCGH) and subsequently confirmed by fluorescent in situ hybridization (FISH) and TaqMan copy number variant (CNV) assays. ('Xq26.3', 'Gene', (4, 10)) ('GH', 'Gene', '2688', (114, 116)) ('microduplications', 'Var', (11, 28)) 4773 26574647 SRO1 (135,627,637-135,986,830) encompasses three protein-coding genes: CD40LG (MIM#300386), ARHGEF6 (MIM# 300267), and RBMX (MIM# 300199); while SRO2 (136,045,310-136,118,269) contains the sole GPR101 gene (MIM# 300393). ('CD40LG', 'Gene', (71, 77)) ('ARHGEF6', 'Gene', (92, 99)) ('RBMX', 'Gene', (119, 123)) ('MIM# 300199);', 'Var', (125, 138)) ('SRO2', 'Chemical', '-', (145, 149)) ('MIM# 300393', 'Var', (207, 218)) ('ARHGEF6', 'Gene', '9459', (92, 99)) ('RBMX', 'Gene', '27316', (119, 123)) ('GPR101', 'Gene', '83550', (194, 200)) ('SRO1', 'Chemical', '-', (0, 4)) ('MIM#300386', 'Var', (79, 89)) ('GPR101', 'Gene', (194, 200)) ('CD40LG', 'Gene', '959', (71, 77)) ('MIM# 300267', 'Var', (101, 112)) 4783 26574647 As X-LAG syndrome, although very rare, will be increasingly recognized by physicians all over the world, more giants with unknown genetic defects will be screened for Xq26.3 microduplications. ('X-LAG syndrome', 'Disease', 'MESH:D017566', (3, 17)) ('genetic defects', 'Disease', (130, 145)) ('genetic defects', 'Disease', 'MESH:D030342', (130, 145)) ('microduplications', 'Var', (174, 191)) ('X-LAG syndrome', 'Disease', (3, 17)) 4787 26574647 The search for potential variants to explain pituitary tumor formation continue; a recently identified variation in immunoglobulin superfamily member 1 (IGSF1) has been described in the germline DNA of three patients with gigantism in the same family. ('patients', 'Species', '9606', (208, 216)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('immunoglobulin superfamily member 1', 'Gene', (116, 151)) ('IGSF1', 'Gene', '3547', (153, 158)) ('described', 'Reg', (169, 178)) ('immunoglobulin superfamily member 1', 'Gene', '3547', (116, 151)) ('variation', 'Var', (103, 112)) ('pituitary tumor', 'Disease', (45, 60)) ('IGSF1', 'Gene', (153, 158)) ('pituitary tumor', 'Disease', 'MESH:D010911', (45, 60)) 4788 26574647 This family was also found to harbor an Xq26.3 duplication, but this potentially functional IGSF1 variant might act as a disease-modifier. ('variant', 'Var', (98, 105)) ('IGSF1', 'Gene', '3547', (92, 97)) ('IGSF1', 'Gene', (92, 97)) 4789 26574647 In the largest retrospective study of gigantism conducted so far, 143 patients were genetically tested and known genetic defects were identified in about half of them: 29% had AIP mutations/deletions associated with sporadic or familial (FIPA) cases of gigantism, 10% X-LAG syndrome, 5% MAS, 1.5% familial CNC, and one was a MEN 1-mutated case. ('mutations/deletions', 'Var', (180, 199)) ('X-LAG syndrome', 'Disease', (268, 282)) ('patients', 'Species', '9606', (70, 78)) ('AIP', 'Gene', '9049', (176, 179)) ('familial CNC', 'Disease', (297, 309)) ('AIP', 'Gene', (176, 179)) ('X-LAG syndrome', 'Disease', 'MESH:D017566', (268, 282)) ('genetic defects', 'Disease', 'MESH:D030342', (113, 128)) ('genetic defects', 'Disease', (113, 128)) ('MEN 1', 'Gene', '4221', (325, 330)) ('associated', 'Reg', (200, 210)) ('gigantism', 'Disease', (253, 262)) ('MEN 1', 'Gene', (325, 330)) ('MAS', 'Disease', (287, 290)) 4793 26574647 While mutations in the NF1 gene would most likely explain these cases, it is still unclear the origin of the GH excess, being the tumors that have been analyzed negative for GH, growth hormone releasing hormone (GHRH), and somatostatin expression. ('tumors', 'Disease', (130, 136)) ('tumors', 'Disease', 'MESH:D009369', (130, 136)) ('GHRH', 'Gene', '2691', (212, 216)) ('GH', 'Gene', '2688', (109, 111)) ('NF1', 'Gene', (23, 26)) ('GH', 'Gene', '2688', (174, 176)) ('growth hormone releasing hormone', 'Gene', '2691', (178, 210)) ('growth hormone releasing hormone', 'Gene', (178, 210)) ('GH', 'Gene', '2688', (212, 214)) ('NF1', 'Gene', '4763', (23, 26)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('GHRH', 'Gene', (212, 216)) ('somatostatin', 'Gene', '6750', (223, 235)) ('tumors', 'Phenotype', 'HP:0002664', (130, 136)) ('mutations', 'Var', (6, 15)) ('somatostatin', 'Gene', (223, 235)) 4815 26229341 REarranged in Transfection (RET) gene mutations are proven to cause both of these conditions. ('REarranged in Transfection', 'Gene', (0, 26)) ('cause', 'Reg', (62, 67)) ('REarranged in Transfection', 'Gene', '5979', (0, 26)) ('RET', 'Gene', (28, 31)) ('mutations', 'Var', (38, 47)) 4831 26229341 Paragangliomas, in general, are proven to have underlying germline (inherited) mutations in 40% cases in 12 genes so far, one of the important gene being RET. ('Paragangliomas', 'Disease', 'MESH:D010235', (0, 14)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (0, 14)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('Paragangliomas', 'Disease', (0, 14)) ('mutations', 'Var', (79, 88)) 4838 26229341 RET mutations are well-established cause of multiple endocrine neoplasia type 2 (MEN2) syndromes (medullary carcinoma thyroid, adrenal pheochromocytoma, ganglioneuromas). ('carcinoma thyroid', 'Disease', (108, 125)) ('carcinoma', 'Phenotype', 'HP:0030731', (108, 117)) ('neoplasia', 'Phenotype', 'HP:0002664', (63, 72)) ('carcinoma thyroid', 'Phenotype', 'HP:0002890', (108, 125)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (127, 151)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (44, 79)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (53, 72)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (135, 151)) ('ganglioneuromas', 'Disease', (153, 168)) ('RET', 'Gene', (0, 3)) ('adrenal pheochromocytoma', 'Disease', (127, 151)) ('multiple endocrine neoplasia type 2', 'Disease', (44, 79)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (127, 151)) ('medullary carcinoma thyroid', 'Phenotype', 'HP:0002865', (98, 125)) ('cause', 'Reg', (35, 40)) ('mutations', 'Var', (4, 13)) ('ganglioneuromas', 'Disease', 'MESH:D005729', (153, 168)) ('carcinoma thyroid', 'Disease', 'MESH:D013964', (108, 125)) 4839 26229341 Incidence of RET mutation in paraganglioma is variably reported but estimated to be 5% in a recent review article. ('paraganglioma', 'Disease', (29, 42)) ('RET', 'Gene', (13, 16)) ('mutation', 'Var', (17, 25)) ('paraganglioma', 'Disease', 'MESH:D010235', (29, 42)) ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) 4841 26229341 For instance, loss of function mutation in RET gene causes defect in enteric nervous system (analogous to Hirschsprung disease), renal agenesis or congenital anomalies of urinary tract depending on combination of RET and Spry1 (another gene involved in renal development) in transgenic mice experimentally. ('congenital anomalies', 'Disease', (147, 167)) ('defect in enteric nervous system', 'Phenotype', 'HP:0025028', (59, 91)) ('enteric', 'Disease', (69, 76)) ('loss of function', 'NegReg', (14, 30)) ('mutation', 'Var', (31, 39)) ('Spry1', 'Gene', '24063', (221, 226)) ('renal agenesis', 'Disease', (129, 143)) ('Hirschsprung disease', 'Disease', (106, 126)) ('Spry1', 'Gene', (221, 226)) ('RET gene', 'Gene', (43, 51)) ('congenital anomalies', 'Disease', 'MESH:D000013', (147, 167)) ('renal agenesis', 'Phenotype', 'HP:0000104', (129, 143)) ('Hirschsprung disease', 'Phenotype', 'HP:0002251', (106, 126)) ('Hirschsprung disease', 'Disease', 'MESH:D006627', (106, 126)) ('anomalies of urinary tract', 'Phenotype', 'HP:0000079', (158, 184)) ('transgenic mice', 'Species', '10090', (275, 290)) 4842 26229341 Clinically, evidence of RET mutation in renal agenesis is supported by a study of stillborn fetuses showing 20% RET mutation rate in unilateral renal agenesis. ('unilateral renal agenesis', 'Disease', (133, 158)) ('mutation', 'Var', (116, 124)) ('unilateral renal agenesis', 'Phenotype', 'HP:0000122', (133, 158)) ('renal agenesis', 'Phenotype', 'HP:0000104', (40, 54)) ('renal agenesis', 'Phenotype', 'HP:0000104', (144, 158)) ('unilateral renal agenesis', 'Disease', 'MESH:D000075529', (133, 158)) 4844 26229341 Experimental evidence for such mutation was found when a particular type of RET mutation was found to promote cellular proliferation but which impaired GDNF action on RET on cellular migration and differentiation in vitro Clinical support for paradox is found in a MEN2A case with renal agenesis, one of the three cases of renal agenesis with pheochromocytoma described previously. ('cellular proliferation', 'CPA', (110, 132)) ('renal agenesis', 'Phenotype', 'HP:0000104', (323, 337)) ('pheochromocytoma', 'Disease', (343, 359)) ('action', 'MPA', (157, 163)) ('GDNF', 'Gene', (152, 156)) ('renal agenesis', 'Disease', (281, 295)) ('MEN2A', 'Gene', (265, 270)) ('MEN2A', 'Gene', '5979', (265, 270)) ('promote', 'PosReg', (102, 109)) ('GDNF', 'Gene', '2668', (152, 156)) ('impaired', 'NegReg', (143, 151)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (343, 359)) ('renal agenesis', 'Phenotype', 'HP:0000104', (281, 295)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (343, 359)) ('mutation', 'Var', (80, 88)) ('RET', 'Gene', (76, 79)) 4845 26229341 Further, same gene mutation may manifest with only loss of function phenotype in one generation but with loss and gain of function mutation in a different generation, for example, familial renal agenesis with medullary carcinoma thyroid in a mother and with Hirschsprung disease in son. ('Hirschsprung disease', 'Disease', (258, 278)) ('renal agenesis', 'Phenotype', 'HP:0000104', (189, 203)) ('loss', 'NegReg', (105, 109)) ('carcinoma thyroid', 'Disease', 'MESH:D013964', (219, 236)) ('Hirschsprung disease', 'Phenotype', 'HP:0002251', (258, 278)) ('familial renal agenesis', 'Disease', 'MESH:C536482', (180, 203)) ('medullary carcinoma thyroid', 'Phenotype', 'HP:0002865', (209, 236)) ('carcinoma thyroid', 'Disease', (219, 236)) ('familial renal agenesis', 'Disease', (180, 203)) ('gain of function', 'PosReg', (114, 130)) ('Hirschsprung disease', 'Disease', 'MESH:D006627', (258, 278)) ('carcinoma', 'Phenotype', 'HP:0030731', (219, 228)) ('carcinoma thyroid', 'Phenotype', 'HP:0002890', (219, 236)) ('mutation', 'Var', (131, 139)) 4951 24707167 Genetic testing identified a 3p25-26 (c.482 G>A) VHL gene chromosomal mutation consistent with von Hippel-Lindau disease genotype. ('c.482 G>A', 'Mutation', 'rs730882035', (38, 47)) ('c.482 G>A', 'Var', (38, 47)) ('von Hippel-Lindau disease', 'Disease', (95, 120)) ('VHL', 'Gene', (49, 52)) ('VHL', 'Gene', '7428', (49, 52)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (95, 120)) 4968 24707167 The brain magnetic resonance imaging (MRI) with and without contrast revealed multiple high T2 and fluid-attenuated inversion-recovery (FLAIR) signal lesions found diffusely in the cortical and subcortical white matter region of the frontal and parietal lobes (Figure 3A). ('lesions', 'Var', (150, 157)) ('parietal lobes', 'Disease', (245, 259)) ('parietal lobes', 'Disease', 'MESH:C566826', (245, 259)) ('high', 'Gene', (87, 91)) 4985 24707167 Subsequent genetic testing identified a 3p25-26 (c.482 G>A) chromosomal mutation consistent with a mutation of the VHL gene. ('VHL', 'Gene', (115, 118)) ('c.482 G>A', 'Mutation', 'rs730882035', (49, 58)) ('c.482 G>A', 'Var', (49, 58)) ('VHL', 'Gene', '7428', (115, 118)) 5009 24707167 The patient was then lost to follow-up for 11 years, and subsequent genetic testing identified the VHL mutation. ('mutation', 'Var', (103, 111)) ('VHL', 'Gene', (99, 102)) ('patient', 'Species', '9606', (4, 11)) ('VHL', 'Gene', '7428', (99, 102)) 5028 24707167 VHL disease is only known to be caused by the mutations of the VHL gene on chromosome 3p25-26, and genetic testing can identify 90%-100% of affected individuals. ('VHL disease', 'Disease', (0, 11)) ('mutations', 'Var', (46, 55)) ('VHL disease', 'Disease', 'MESH:D006623', (0, 11)) ('caused', 'Reg', (32, 38)) ('VHL', 'Gene', (0, 3)) ('VHL', 'Gene', (63, 66)) ('VHL', 'Gene', '7428', (0, 3)) ('VHL', 'Gene', '7428', (63, 66)) 5029 24707167 VHL is an autosomal dominant disease; however, an estimated 20% have spontaneous de novo VHL gene mutations. ('autosomal dominant disease', 'Disease', 'MESH:D030342', (10, 36)) ('VHL', 'Gene', (89, 92)) ('mutations', 'Var', (98, 107)) ('VHL', 'Gene', (0, 3)) ('VHL', 'Gene', '7428', (89, 92)) ('VHL', 'Gene', '7428', (0, 3)) ('autosomal dominant disease', 'Disease', (10, 36)) 5118 24667359 The expression level of NCX isoforms and different types of VDCC was verified by qPCR and immunoblotting, and shown to be upregulated in cells with reduced level of PMCA2 or PMCA3 (Fig. ('NCX', 'Gene', (24, 27)) ('upregulated', 'PosReg', (122, 133)) ('PMCA3', 'Var', (174, 179)) ('PMCA2', 'Var', (165, 170)) ('NCX', 'Gene', '29715', (24, 27)) 5121 24667359 Since over-activation of calcineurin in PMCA2- or PMCA3 reduced cells was reported previously, in this study we tested subcellular and activity of the Ca2+/calcineurin-dependent transcription factor, NFAT. ('PMCA2-', 'Var', (40, 46)) ('Ca2', 'Gene', (151, 154)) ('NFAT', 'Gene', '307820', (200, 204)) ('NFAT', 'Gene', (200, 204)) ('PMCA3', 'Var', (50, 55)) ('over-activation', 'PosReg', (6, 21)) ('Ca2', 'Gene', '54231', (151, 154)) ('cells', 'CPA', (64, 69)) 5137 24667359 Abnormality of calcium homeostasis could affect the secretory activity of PC12 cells. ('calcium homeostasis', 'MPA', (15, 34)) ('Abnormality', 'Var', (0, 11)) ('PC12', 'CellLine', 'CVCL:0481', (74, 78)) ('calcium', 'Chemical', 'MESH:D002118', (15, 22)) ('secretory activity', 'MPA', (52, 70)) ('affect', 'Reg', (41, 47)) 5139 24667359 The obtained results revealed that dopamine is released with a significant delay by cells with altered pattern of PMCA isoforms in comparison to control. ('delay', 'NegReg', (75, 80)) ('released', 'MPA', (47, 55)) ('dopamine', 'Chemical', 'MESH:D004298', (35, 43)) ('PMCA', 'Gene', (114, 118)) ('altered', 'Var', (95, 102)) ('dopamine', 'MPA', (35, 43)) 5182 24667359 In view of this fact one could expect that deficiency in these isoforms should increase dopamine secretion. ('increase', 'PosReg', (79, 87)) ('dopamine', 'Chemical', 'MESH:D004298', (88, 96)) ('deficiency', 'Var', (43, 53)) ('dopamine secretion', 'MPA', (88, 106)) 5192 24667359 Firstly, a store-operated Ca2+ entry, influencing directly the NFAT/calcineurin pathway was not inhibited with KB-R7943 in cardiomyocytes exhibiting an increased calcineurin-NFAT activation. ('NFAT', 'Gene', (63, 67)) ('Ca2', 'Gene', '54231', (26, 29)) ('NFAT', 'Gene', '307820', (174, 178)) ('NFAT', 'Gene', '307820', (63, 67)) ('Ca2', 'Gene', (26, 29)) ('KB-R7943', 'Var', (111, 119)) ('KB-R7943', 'Chemical', 'MESH:C101670', (111, 119)) ('NFAT', 'Gene', (174, 178)) 5198 24667359 However, it would be interesting to test in the future activation of NFAT upon KB-R7943 treatment and upon plasma membrane depolarization in PC12 cells. ('NFAT', 'Gene', (69, 73)) ('KB-R7943', 'Chemical', 'MESH:C101670', (79, 87)) ('KB-R7943', 'Var', (79, 87)) ('PC12', 'CellLine', 'CVCL:0481', (141, 145)) ('NFAT', 'Gene', '307820', (69, 73)) ('test', 'Reg', (36, 40)) ('activation', 'PosReg', (55, 65)) 5202 24667359 Nonetheless, inhibition of VDCC did not alter [Ca2+]c at resting state, excluding its involvement in the observed increase in [Ca2+]c during resting conditions. ('VDCC', 'Protein', (27, 31)) ('Ca2', 'Gene', '54231', (127, 130)) ('inhibition', 'Var', (13, 23)) ('Ca2', 'Gene', '54231', (47, 50)) ('Ca2', 'Gene', (127, 130)) ('Ca2', 'Gene', (47, 50)) 5206 24667359 However, on the basis of literature it could be assumed that pharmacological inhibition of VDCC decreases NFAT activity during cell stimulation. ('decreases', 'NegReg', (96, 105)) ('VDCC', 'Gene', (91, 95)) ('pharmacological inhibition', 'Var', (61, 87)) ('NFAT', 'Gene', '307820', (106, 110)) ('NFAT', 'Gene', (106, 110)) 5211 24667359 It was also shown that depolarization of neurons induced activation of NFAT3, and the effect was linked directly with L-type VDCC, but not with N- and P/Q-types of VDCC. ('NFAT', 'Gene', (71, 75)) ('activation', 'PosReg', (57, 67)) ('NFAT', 'Gene', '307820', (71, 75)) ('depolarization', 'Var', (23, 37)) 5231 24667359 Moreover, according to the literature, 11R-VIVIT was found to efficiently block transcriptional activity of NFAT, manifested by an arrested NFAT translocation, decreased NFAT expression in osteoclast differentiation, and by alterations of the expression pattern of genes being under its control. ('NFAT', 'Gene', (108, 112)) ('expression', 'MPA', (175, 185)) ('osteoclast differentiation', 'CPA', (189, 215)) ('NFAT', 'Gene', '307820', (170, 174)) ('11R-VIVIT', 'Chemical', '-', (39, 48)) ('NFAT', 'Gene', (170, 174)) ('11R-VIVIT', 'Var', (39, 48)) ('NFAT', 'Gene', '307820', (108, 112)) ('block', 'NegReg', (74, 79)) ('NFAT', 'Gene', '307820', (140, 144)) ('transcriptional activity', 'MPA', (80, 104)) ('decreased', 'NegReg', (160, 169)) ('arrested', 'NegReg', (131, 139)) ('expression pattern of genes', 'MPA', (243, 270)) ('alterations', 'Reg', (224, 235)) ('NFAT', 'Gene', (140, 144)) 5263 20664475 Genetic testing for RET mutations has allowed identification of familial cases and prophylactic thyroidectomy for cure. ('RET', 'Gene', (20, 23)) ('mutations', 'Var', (24, 33)) ('RET', 'Gene', '5979', (20, 23)) 5283 20664475 At present it is estimated that at least 24-27% of pheochromocytomas or paragangliomas are associated with known genetic mutations, in children this prevalence may be as high as 40%. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (51, 68)) ('mutations', 'Var', (121, 130)) ('paragangliomas', 'Disease', (72, 86)) ('paragangliomas', 'Disease', 'MESH:D010235', (72, 86)) ('children', 'Species', '9606', (135, 143)) ('pheochromocytomas', 'Disease', (51, 68)) ('paraganglioma', 'Phenotype', 'HP:0002668', (72, 85)) ('paragangliomas', 'Phenotype', 'HP:0002668', (72, 86)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (51, 68)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (51, 67)) ('associated', 'Reg', (91, 101)) 5286 20664475 Hereditary pheochromocytoma is associated with multiple endocrine neoplasia type 2 (MEN-2A or MEN-2B), neurofibromatosis type 1 (NF-1), von Hippel-Lindau (VHL) syndrome, and familial paragangliomas and pheochromocytomas due to germ-line mutations of genes encoding succinate dehydrogenase subunits B, C, and D (SDHB, SDHC, SDHD) (Tables 1,2). ('neurofibromatosis', 'Phenotype', 'HP:0001067', (103, 120)) ('MEN-2A', 'Gene', (84, 90)) ('MEN-2B', 'Gene', (94, 100)) ('SDHB', 'Gene', (311, 315)) ('paragangliomas', 'Phenotype', 'HP:0002668', (183, 197)) ('Hereditary pheochromocytoma', 'Disease', 'MESH:D010673', (0, 27)) ('paraganglioma', 'Phenotype', 'HP:0002668', (183, 196)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (202, 219)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (47, 82)) ('neoplasia', 'Phenotype', 'HP:0002664', (66, 75)) ('MEN-2B', 'Gene', '5979', (94, 100)) ('associated', 'Reg', (31, 41)) ('SDHC', 'Gene', '6391', (317, 321)) ('neurofibromatosis type 1 (NF-1), von Hippel-Lindau (VHL) syndrome', 'Disease', 'MESH:D006623', (103, 168)) ('familial paragangliomas and pheochromocytomas', 'Disease', 'MESH:C531777', (174, 219)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (202, 218)) ('mutations', 'Var', (237, 246)) ('SDHD', 'Gene', '6392', (323, 327)) ('MEN-2A', 'Gene', '5979', (84, 90)) ('SDHD', 'Gene', (323, 327)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (11, 27)) ('Hereditary pheochromocytoma', 'Disease', (0, 27)) ('multiple endocrine neoplasia type 2', 'Disease', (47, 82)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (56, 75)) ('SDHC', 'Gene', (317, 321)) ('SDHB', 'Gene', '6390', (311, 315)) 5291 20664475 In those patients with malignant disease secondary to an extra-adrenal paraganglioma, almost 50% had SDHB mutations. ('malignant disease', 'Disease', 'MESH:D009369', (23, 40)) ('patients', 'Species', '9606', (9, 17)) ('SDHB', 'Gene', (101, 105)) ('extra-adrenal paraganglioma', 'Disease', (57, 84)) ('malignant disease', 'Disease', (23, 40)) ('mutations', 'Var', (106, 115)) ('extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (57, 84)) ('paraganglioma', 'Phenotype', 'HP:0002668', (71, 84)) ('SDHB', 'Gene', '6390', (101, 105)) 5293 20664475 Family history is often helpful in MEN-2, VHL, and NF-1 tumors but only 10% of the currently investigated patients with SDHB mutations have a positive family history for pheochromocytoma or paraganglioma (Table 1). ('mutations', 'Var', (125, 134)) ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (170, 186)) ('NF-1 tumors', 'Disease', (51, 62)) ('NF-1 tumors', 'Disease', 'MESH:C537392', (51, 62)) ('VHL', 'Disease', (42, 45)) ('SDHB', 'Gene', '6390', (120, 124)) ('pheochromocytoma or paraganglioma', 'Disease', 'MESH:D010673', (170, 203)) ('VHL', 'Disease', 'MESH:D006623', (42, 45)) ('tumors', 'Phenotype', 'HP:0002664', (56, 62)) ('MEN', 'Species', '9606', (35, 38)) ('pheochromocytoma or paraganglioma', 'Disease', (170, 203)) ('patients', 'Species', '9606', (106, 114)) ('SDHB', 'Gene', (120, 124)) ('paraganglioma', 'Phenotype', 'HP:0002668', (190, 203)) 5309 20664475 The superiority of [18F]-FDA PET imaging over [131I]-MIBG scintigraphy, especially in malignant tumors, has been reported. ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('tumors', 'Phenotype', 'HP:0002664', (96, 102)) ('[18F]-FDA', 'Chemical', '-', (19, 28)) ('malignant tumors', 'Disease', (86, 102)) ('[131I]-MIBG', 'Chemical', '-', (46, 57)) ('malignant tumors', 'Disease', 'MESH:D018198', (86, 102)) ('[18F]-FDA', 'Var', (19, 28)) 5320 20664475 Although follow-up is especially important for patients identified with mutations of disease-causing genes, there is currently no method based on pathological examination of a resected tumor to rule out potential for malignancy or recurrence. ('tumor', 'Disease', (185, 190)) ('mutations', 'Var', (72, 81)) ('malignancy', 'Disease', 'MESH:D009369', (217, 227)) ('malignancy', 'Disease', (217, 227)) ('patients', 'Species', '9606', (47, 55)) ('tumor', 'Disease', 'MESH:D009369', (185, 190)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) 5341 20664475 The effect of [177-Lu-DOTA]-Octreotate in malignant paragangliomas or pheochromocytomas has only been described in case reports. ('[177-Lu-DOTA]-Octreotate', 'Chemical', 'MESH:C000608228', (14, 38)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (70, 87)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (70, 86)) ('malignant paragangliomas', 'Disease', (42, 66)) ('pheochromocytomas', 'Disease', (70, 87)) ('paraganglioma', 'Phenotype', 'HP:0002668', (52, 65)) ('paragangliomas', 'Phenotype', 'HP:0002668', (52, 66)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (70, 87)) ('[177-Lu-DOTA]-Octreotate', 'Var', (14, 38)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (42, 66)) 5358 20664475 Some variants of MEN2A are also associated with either cutaneous lichen amyloidosis or Hirschsprung's disease. ('MEN2A', 'Gene', (17, 22)) ('MEN2A', 'Gene', '5979', (17, 22)) ("Hirschsprung's disease", 'Disease', (87, 109)) ('cutaneous lichen amyloidosis', 'Disease', (55, 83)) ('amyloidosis', 'Phenotype', 'HP:0011034', (72, 83)) ("Hirschsprung's disease", 'Phenotype', 'HP:0002251', (87, 109)) ("Hirschsprung's disease", 'Disease', 'MESH:D006627', (87, 109)) ('cutaneous lichen amyloidosis', 'Phenotype', 'HP:0032346', (55, 83)) ('cutaneous lichen amyloidosis', 'Disease', 'MESH:C562643', (55, 83)) ('variants', 'Var', (5, 13)) ('associated', 'Reg', (32, 42)) 5369 20664475 There is significant overlap in the genetic mutations that lead to either FMTC or MEN2A. ('FMTC', 'Disease', (74, 78)) ('lead to', 'Reg', (59, 66)) ('mutations', 'Var', (44, 53)) ('MTC', 'Phenotype', 'HP:0002865', (75, 78)) ('MEN2A', 'Gene', (82, 87)) ('MEN2A', 'Gene', '5979', (82, 87)) 5379 20664475 The most common germline mutation in MEN2A is in codon 634 (80% of patients). ('MEN2A', 'Gene', (37, 42)) ('codon 634', 'Var', (49, 58)) ('patients', 'Species', '9606', (67, 75)) ('MEN2A', 'Gene', '5979', (37, 42)) 5382 20664475 Family members of patients with a germline mutation of the RET gene have a 50% chance of inheriting the mutation. ('RET', 'Gene', (59, 62)) ('germline mutation', 'Var', (34, 51)) ('patients', 'Species', '9606', (18, 26)) ('RET', 'Gene', '5979', (59, 62)) 5383 20664475 In patients harboring a RET mutation, their lifetime risk of malignancy approaches 100%. ('RET', 'Gene', '5979', (24, 27)) ('mutation', 'Var', (28, 36)) ('RET', 'Gene', (24, 27)) ('patients', 'Species', '9606', (3, 11)) ('malignancy', 'Disease', 'MESH:D009369', (61, 71)) ('malignancy', 'Disease', (61, 71)) 5386 20664475 The aggressiveness of the MTC in hereditary disease is dependent upon the specific RET mutation. ('RET', 'Gene', '5979', (83, 86)) ('aggressiveness', 'Disease', 'MESH:D001523', (4, 18)) ('MTC', 'Phenotype', 'HP:0002865', (26, 29)) ('hereditary disease', 'Disease', 'MESH:D030342', (33, 51)) ('hereditary disease', 'Disease', (33, 51)) ('RET', 'Gene', (83, 86)) ('aggressiveness', 'Disease', (4, 18)) ('mutation', 'Var', (87, 95)) ('aggressiveness', 'Phenotype', 'HP:0000718', (4, 18)) 5390 20664475 Level 2 mutations (RET codons 611, 618, 620, and 634 mutations) are considered high risk for aggressive MTC. ('RET', 'Gene', (19, 22)) ('MTC', 'Phenotype', 'HP:0002865', (104, 107)) ('mutations', 'Var', (8, 17)) ('RET', 'Gene', '5979', (19, 22)) ('aggressive MTC', 'Disease', (93, 107)) 5391 20664475 Patients with level 2 RET mutations should undergo thyroidectomy before age 5. ('mutations', 'Var', (26, 35)) ('RET', 'Gene', (22, 25)) ('RET', 'Gene', '5979', (22, 25)) ('Patients', 'Species', '9606', (0, 8)) 5393 20664475 In patients with level 1 RET mutations, MTC usually develops later in life and is more indolent. ('RET', 'Gene', '5979', (25, 28)) ('mutations', 'Var', (29, 38)) ('RET', 'Gene', (25, 28)) ('patients', 'Species', '9606', (3, 11)) ('MTC', 'Phenotype', 'HP:0002865', (40, 43)) ('MTC', 'Disease', (40, 43)) 5419 20664475 Hopefully as we gain a better understanding of the phenotype-genotype relationships amongst the RET mutations, we will be better able to predict when disease is likely to develop and therefore plan operative intervention prior to that time. ('mutations', 'Var', (100, 109)) ('RET', 'Gene', (96, 99)) ('RET', 'Gene', '5979', (96, 99)) 5475 20664475 Genetic testing for RET mutations have allowed potential cure for the 25% of patients with hereditary MTC. ('RET', 'Gene', '5979', (20, 23)) ('MTC', 'Disease', (102, 105)) ('RET', 'Gene', (20, 23)) ('patients', 'Species', '9606', (77, 85)) ('mutations', 'Var', (24, 33)) ('MTC', 'Phenotype', 'HP:0002865', (102, 105)) 5509 21223554 High catecholamine level can cause direct myocardial damage with focal degeneration and contraction band necrosis of the myocytes, monocytic infiltration, medial thickening of small and medium size coronary arteries and interstitial fibrosis. ('High catecholamine', 'Var', (0, 18)) ('myocardial damage', 'Disease', 'MESH:D009202', (42, 59)) ('medial thickening', 'CPA', (155, 172)) ('myocardial damage', 'Disease', (42, 59)) ('High catecholamine level', 'Phenotype', 'HP:0003334', (0, 24)) ('monocytic infiltration', 'CPA', (131, 153)) ('focal degeneration and contraction band necrosis', 'Disease', 'MESH:D058745', (65, 113)) ('interstitial fibrosis', 'Disease', (220, 241)) ('catecholamine', 'Chemical', 'MESH:D002395', (5, 18)) ('interstitial fibrosis', 'Disease', 'MESH:D005355', (220, 241)) ('interstitial fibrosis', 'Phenotype', 'HP:0005576', (220, 241)) ('cause', 'Reg', (29, 34)) 5531 19243216 Pre-eclampsia may be associated with hyperuricaemia, deranged liver function, and signs of neurologic irritability such as headaches, hyper-reflexia, and seizures. ('liver function', 'MPA', (62, 76)) ('hyper-reflexia', 'Phenotype', 'HP:0001347', (134, 148)) ('hyper-reflexia', 'Disease', (134, 148)) ('seizures', 'Disease', (154, 162)) ('hyperuricaemia', 'Phenotype', 'HP:0002149', (37, 51)) ('seizures', 'Disease', 'MESH:D012640', (154, 162)) ('hyperuricaemia', 'Disease', 'None', (37, 51)) ('Pre-eclampsia', 'Disease', (0, 13)) ('deranged', 'Var', (53, 61)) ('seizures', 'Phenotype', 'HP:0001250', (154, 162)) ('neurologic irritability', 'Disease', 'MESH:D009422', (91, 114)) ('hyper-reflexia', 'Disease', 'MESH:D053307', (134, 148)) ('headaches', 'Disease', 'MESH:D006261', (123, 132)) ('hyperuricaemia', 'Disease', (37, 51)) ('eclampsia', 'Phenotype', 'HP:0100601', (4, 13)) ('associated', 'Reg', (21, 31)) ('neurologic irritability', 'Disease', (91, 114)) ('Pre-eclampsia', 'Phenotype', 'HP:0100602', (0, 13)) ('headaches', 'Phenotype', 'HP:0002315', (123, 132)) ('irritability', 'Phenotype', 'HP:0000737', (102, 114)) ('headache', 'Phenotype', 'HP:0002315', (123, 131)) ('headaches', 'Disease', (123, 132)) 5568 19243216 She was found to be heterozygous for c.449_453dup mutation of the succinate dehydrogenase subunit D (SDHD) gene (Figure 5). ('SDHD', 'Gene', '6392', (101, 105)) ('SDHD', 'Gene', (101, 105)) ('succinate dehydrogenase subunit D', 'Gene', '6392', (66, 99)) ('c.449_453dup mutation', 'Var', (37, 58)) ('succinate dehydrogenase subunit D', 'Gene', (66, 99)) ('c.449_453dup', 'Mutation', 'c.449_453dup', (37, 49)) 5569 19243216 This mutation is a novel frameshift mutation, and leads to SDHD deficiency (GenBank accession number: 1162563). ('SDHD deficiency', 'Disease', (59, 74)) ('SDHD deficiency', 'Disease', 'MESH:D007153', (59, 74)) ('leads to', 'Reg', (50, 58)) ('mutation', 'Var', (5, 13)) 5589 19243216 I131 or I123 MIBG scan is the imaging modality of choice. ('I131', 'Var', (0, 4)) ('MIBG', 'Chemical', 'MESH:D019797', (13, 17)) ('I123', 'Var', (8, 12)) 5594 19243216 The main side-effects of phenoxybenzamine are postural hypotension and reflex tachycardia. ('tachycardia', 'Disease', (78, 89)) ('tachycardia', 'Disease', 'MESH:D013610', (78, 89)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (25, 41)) ('hypotension', 'Phenotype', 'HP:0002615', (55, 66)) ('phenoxybenzamine', 'Var', (25, 41)) ('postural hypotension', 'Phenotype', 'HP:0001278', (46, 66)) ('hypotension', 'Disease', 'MESH:D007022', (55, 66)) ('tachycardia', 'Phenotype', 'HP:0001649', (78, 89)) ('hypotension', 'Disease', (55, 66)) 5595 19243216 It is important to note that beta-blockers should not be used in isolation, since blockade of ss2-adrenoceptors, which have a vasodilatory effect, can cause unopposed vasoconstriction by a1-adrenoceptor stimulation and precipitate severe hypertension. ('hypertension', 'Phenotype', 'HP:0000822', (238, 250)) ('precipitate', 'Reg', (219, 230)) ('blockade', 'Var', (82, 90)) ('ss2-adrenoceptors', 'Gene', (94, 111)) ('a1-adrenoceptor', 'Protein', (187, 202)) ('hypertension', 'Disease', 'MESH:D006973', (238, 250)) ('cause', 'Reg', (151, 156)) ('unopposed vasoconstriction', 'MPA', (157, 183)) ('hypertension', 'Disease', (238, 250)) 5603 19243216 Approximately one quarter of patients presenting with phaeochromocytoma may carry germline mutations, even in the absence of apparent family history. ('patients', 'Species', '9606', (29, 37)) ('phaeochromocytoma', 'Disease', (54, 71)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (54, 71)) ('carry', 'Reg', (76, 81)) ('germline mutations', 'Var', (82, 100)) 5606 19243216 Our patient has a novel frameshift mutation in the SDHD gene located at Chromosome 11q. ('SDHD', 'Gene', (51, 55)) ('frameshift mutation', 'Var', (24, 43)) ('patient', 'Species', '9606', (4, 11)) ('SDHD', 'Gene', '6392', (51, 55)) 5608 19243216 Characteristically, SDHD mutation is associated with head or neck non-functional paraganglioma, and infrequently, sympathetic paraganglioma or phaeochromocytoma. ('paraganglioma', 'Phenotype', 'HP:0002668', (81, 94)) ('paraganglioma', 'Phenotype', 'HP:0002668', (126, 139)) ('paraganglioma or phaeochromocytoma', 'Disease', 'MESH:D010235', (126, 160)) ('mutation', 'Var', (25, 33)) ('paraganglioma', 'Disease', (81, 94)) ('paraganglioma', 'Disease', (126, 139)) ('SDHD', 'Gene', '6392', (20, 24)) ('associated', 'Reg', (37, 47)) ('paraganglioma', 'Disease', 'MESH:D010235', (81, 94)) ('paraganglioma', 'Disease', 'MESH:D010235', (126, 139)) ('SDHD', 'Gene', (20, 24)) ('paraganglioma or phaeochromocytoma', 'Disease', (126, 160)) 5609 19243216 Tumours associated with SDHD mutation are rarely malignant, in contrast to those arisen from mutation of the SDHB gene. ('mutation', 'Var', (29, 37)) ('SDHB', 'Gene', '6390', (109, 113)) ('SDHB', 'Gene', (109, 113)) ('SDHD', 'Gene', '6392', (24, 28)) ('SDHD', 'Gene', (24, 28)) ('Tumours', 'Phenotype', 'HP:0002664', (0, 7)) 5610 19243216 Like all other syndromes of hereditary phaeochromocytoma, SDHD mutation is transmitted in an autosomal dominant fashion. ('hereditary phaeochromocytoma', 'Disease', (28, 56)) ('mutation', 'Var', (63, 71)) ('SDHD', 'Gene', '6392', (58, 62)) ('hereditary phaeochromocytoma', 'Disease', 'MESH:D009386', (28, 56)) ('hereditary phaeochromocytoma', 'Phenotype', 'HP:0002666', (28, 56)) ('SDHD', 'Gene', (58, 62)) 5611 19243216 However, not all carriers of the SDHD mutation develop tumours, and inheritance is further complicated by maternal imprinting in gene expression. ('tumours', 'Disease', (55, 62)) ('SDHD', 'Gene', '6392', (33, 37)) ('SDHD', 'Gene', (33, 37)) ('tumour', 'Phenotype', 'HP:0002664', (55, 61)) ('tumours', 'Phenotype', 'HP:0002664', (55, 62)) ('mutation', 'Var', (38, 46)) ('tumours', 'Disease', 'MESH:D009369', (55, 62)) 5613 19243216 Von Hippel-Lindau syndrome Multiple endocrine neoplasia type 2A and type 2B Neurofibromatosis type 1 Mutation of SDHB, SDHC, SDHD Ataxia-telangiectasia Tuberous sclerosis Sturge-Weber syndrome Hypertension complicating pregnancy is a commonly encountered medical condition. ('telangiectasia', 'Phenotype', 'HP:0001009', (138, 152)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (36, 55)) ('Tuberous sclerosis', 'Disease', 'MESH:D014402', (153, 171)) ('Von Hippel-Lindau syndrome', 'Disease', (0, 26)) ('Mutation', 'Var', (101, 109)) ('SDHC', 'Gene', '6391', (119, 123)) ('Multiple endocrine neoplasia type', 'Disease', (27, 60)) ('Ataxia-telangiectasia', 'Disease', 'MESH:D001260', (131, 152)) ('Multiple endocrine neoplasia type', 'Disease', 'MESH:D018761', (27, 60)) ('SDHD', 'Gene', '6392', (125, 129)) ('SDHB', 'Gene', '6390', (113, 117)) ('neoplasia', 'Phenotype', 'HP:0002664', (46, 55)) ('Tuberous sclerosis', 'Disease', (153, 171)) ('Weber syndrome', 'Phenotype', 'HP:0002277', (179, 193)) ('Von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (0, 26)) ('SDHD', 'Gene', (125, 129)) ('Ataxia', 'Phenotype', 'HP:0001251', (131, 137)) ('SDHC', 'Gene', (119, 123)) ('Hypertension', 'Disease', 'MESH:D006973', (194, 206)) ('Neurofibromatosis type', 'Disease', (76, 98)) ('Ataxia-telangiectasia', 'Disease', (131, 152)) ('Neurofibromatosis type', 'Disease', 'MESH:C537392', (76, 98)) ('SDHB', 'Gene', (113, 117)) ('Hypertension', 'Disease', (194, 206)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (76, 93)) ('Hypertension', 'Phenotype', 'HP:0000822', (194, 206)) 5622 32859697 The SDHB Arg230His mutation causing familial paraganglioma alters glycolysis in a new Caenorhabditis elegans model The conserved B-subunit of succinate dehydrogenase (SDH) participates in the tricarboxylic acid cycle (TCA) cycle and mitochondrial electron transport. ('SDH', 'Gene', '6390', (4, 7)) ('Caenorhabditis elegans', 'Species', '6239', (86, 108)) ('SDH', 'Gene', (167, 170)) ('causing', 'Reg', (28, 35)) ('paraganglioma', 'Phenotype', 'HP:0002668', (45, 58)) ('SDH', 'Gene', (4, 7)) ('succinate dehydrogenase', 'Gene', '6390', (142, 165)) ('Arg230His', 'SUBSTITUTION', 'None', (9, 18)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (192, 210)) ('familial paraganglioma alters glycolysis', 'Disease', (36, 76)) ('succinate dehydrogenase', 'Gene', (142, 165)) ('SDHB', 'Gene', '6390', (4, 8)) ('familial paraganglioma alters glycolysis', 'Disease', 'MESH:C564972', (36, 76)) ('SDHB', 'Gene', (4, 8)) ('SDH', 'Gene', '6390', (167, 170)) ('Arg230His', 'Var', (9, 18)) 5623 32859697 The Arg230His mutation in SDHB causes heritable pheochromocytoma/paraganglioma (PPGL). ('pheochromocytoma', 'Phenotype', 'HP:0002666', (48, 64)) ('PPGL', 'Chemical', '-', (80, 84)) ('pheochromocytoma/paraganglioma', 'Disease', (48, 78)) ('paraganglioma', 'Phenotype', 'HP:0002668', (65, 78)) ('SDHB', 'Gene', '6390', (26, 30)) ('Arg230His', 'Var', (4, 13)) ('SDHB', 'Gene', (26, 30)) ('causes', 'Reg', (31, 37)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (48, 78)) ('Arg230His', 'SUBSTITUTION', 'None', (4, 13)) 5624 32859697 In Caenorhabditis elegans, we generated an in vivo PPGL model (SDHB-1 Arg244His; equivalent to human Arg230His), which manifests delayed development, shortened lifespan, attenuated ATP production and reduced mitochondrial number. ('human', 'Species', '9606', (95, 100)) ('SDHB-1', 'Gene', (63, 69)) ('shortened', 'NegReg', (150, 159)) ('Arg244His', 'SUBSTITUTION', 'None', (70, 79)) ('Arg230His', 'SUBSTITUTION', 'None', (101, 110)) ('lifespan', 'CPA', (160, 168)) ('ATP', 'Chemical', 'MESH:D000255', (181, 184)) ('reduced', 'NegReg', (200, 207)) ('PPGL', 'Chemical', '-', (51, 55)) ('SDHB-1', 'Gene', '174482', (63, 69)) ('mitochondrial number', 'MPA', (208, 228)) ('delayed development', 'Phenotype', 'HP:0001263', (129, 148)) ('Caenorhabditis elegans', 'Species', '6239', (3, 25)) ('attenuated', 'NegReg', (170, 180)) ('Arg244His', 'Var', (70, 79)) ('Arg230His', 'Var', (101, 110)) ('reduced mitochondrial number', 'Phenotype', 'HP:0040013', (200, 228)) ('ATP production', 'MPA', (181, 195)) 5625 32859697 Although succinate is elevated in both missense and null sdhb-1(gk165) mutants, transcriptomic comparison suggests very different causal mechanisms that are supported by metabolic analysis, whereby only Arg244His (not null) worms demonstrate elevated lactate/pyruvate levels, pointing to a missense-induced, Warburg-like aberrant glycolysis. ('elevated', 'PosReg', (242, 250)) ('succinate', 'MPA', (9, 18)) ('elevated lactate/pyruvate levels', 'Phenotype', 'HP:0025435', (242, 274)) ('succinate', 'Chemical', 'MESH:D019802', (9, 18)) ('elevated', 'PosReg', (22, 30)) ('lactate', 'Chemical', 'MESH:D019344', (251, 258)) ('Arg244His', 'Var', (203, 212)) ('lactate/pyruvate levels', 'MPA', (251, 274)) ('mutants', 'Var', (71, 78)) ('sdhb-1', 'Gene', (57, 63)) ('sdhb-1', 'Gene', '174482', (57, 63)) ('pyruvate', 'Chemical', 'MESH:D019289', (259, 267)) ('succinate is elevated', 'Phenotype', 'HP:0020149', (9, 30)) ('aberrant glycolysis', 'Phenotype', 'HP:0004366', (321, 340)) ('Arg244His', 'SUBSTITUTION', 'None', (203, 212)) 5626 32859697 In silico predictions of the SDHA-B dimer structure demonstrate that Arg230His modifies the catalytic cleft despite the latter's remoteness from the mutation site. ('Arg230His', 'SUBSTITUTION', 'None', (69, 78)) ('catalytic cleft', 'MPA', (92, 107)) ('SDHA', 'Gene', '6389', (29, 33)) ('Arg230His', 'Var', (69, 78)) ('SDHA', 'Gene', (29, 33)) ('modifies', 'Reg', (79, 87)) 5627 32859697 We hypothesize that the Arg230His SDHB mutation rewires metabolism, reminiscent of metabolic reprogramming in cancer. ('metabolism', 'MPA', (56, 66)) ('cancer', 'Disease', (110, 116)) ('cancer', 'Phenotype', 'HP:0002664', (110, 116)) ('rewires', 'Reg', (48, 55)) ('Arg230His', 'Var', (24, 33)) ('SDHB', 'Gene', '6390', (34, 38)) ('SDHB', 'Gene', (34, 38)) ('cancer', 'Disease', 'MESH:D009369', (110, 116)) ('Arg230His', 'SUBSTITUTION', 'None', (24, 33)) 5629 32859697 Summary: Heritable pheochromocytoma/paraganglioma follows the Arg230His missense mutation in SDHB in mitochondrial complex II. ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (19, 49)) ('Arg230His', 'SUBSTITUTION', 'None', (62, 71)) ('SDHB', 'Gene', (93, 97)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (19, 35)) ('pheochromocytoma/paraganglioma', 'Disease', (19, 49)) ('Arg230His', 'Var', (62, 71)) ('SDHB', 'Gene', '6390', (93, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (36, 49)) 5636 32859697 Several mutant genes have been associated with PPGL. ('PPGL', 'Chemical', '-', (47, 51)) ('PPGL', 'Disease', (47, 51)) ('mutant', 'Var', (8, 14)) ('associated', 'Reg', (31, 41)) 5637 32859697 These genes disrupt different signaling pathways and can be classified into three groups: the pseudohypoxia group [including both tricarboxylic acid cycle (TCA)- and VHL/EPAS1-related genes]; the kinase signaling group; and the Wnt signaling group. ('hypoxia', 'Disease', (101, 108)) ('EPAS1', 'Gene', (171, 176)) ('disrupt', 'Reg', (12, 19)) ('signaling pathways', 'Pathway', (30, 48)) ('genes', 'Var', (6, 11)) ('VHL', 'Gene', (167, 170)) ('VHL', 'Gene', '7428', (167, 170)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (131, 149)) ('hypoxia', 'Disease', 'MESH:D000860', (101, 108)) ('EPAS1', 'Gene', '2034', (171, 176)) 5647 32859697 SDH mutations are thought to cause malignant change by three principal mechanisms. ('SDH', 'Gene', (0, 3)) ('malignant change', 'Phenotype', 'HP:0002664', (35, 51)) ('mutations', 'Var', (4, 13)) ('cause', 'Reg', (29, 34)) ('SDH', 'Gene', '6390', (0, 3)) 5648 32859697 Second, it is believed that in many such cancer-linked SDH mutations (now renamed SDHx), mitochondrial succinate accumulates. ('succinate', 'Chemical', 'MESH:D019802', (103, 112)) ('SDH', 'Gene', '6390', (55, 58)) ('cancer', 'Phenotype', 'HP:0002664', (41, 47)) ('SDH', 'Gene', (82, 85)) ('mitochondrial succinate', 'MPA', (89, 112)) ('accumulates', 'PosReg', (113, 124)) ('cancer-linked SDH', 'Disease', 'MESH:D009369', (41, 58)) ('SDH', 'Gene', (55, 58)) ('mutations', 'Var', (59, 68)) ('cancer-linked SDH', 'Disease', (41, 58)) ('SDH', 'Gene', '6390', (82, 85)) 5653 32859697 It is curious that SDHA, SDHC and SDHD mutations typically cause benign tumors, whereas mutations in the gene encoding subunit B are, for unknown reasons, strongly associated with high metastatic potential. ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('SDHA', 'Gene', '6389', (19, 23)) ('associated', 'Reg', (164, 174)) ('benign tumors', 'Disease', (65, 78)) ('SDHC', 'Gene', (25, 29)) ('tumors', 'Phenotype', 'HP:0002664', (72, 78)) ('cause', 'Reg', (59, 64)) ('mutations', 'Var', (39, 48)) ('SDHC', 'Gene', '6391', (25, 29)) ('SDHD', 'Gene', '6392', (34, 38)) ('benign tumors', 'Disease', 'MESH:D009369', (65, 78)) ('SDHA', 'Gene', (19, 23)) ('SDHD', 'Gene', (34, 38)) 5654 32859697 Additionally, significant numbers of SDHB-affected patients harbor germ line SDHB mutations and suffer from a particularly aggressive form of malignant PPGL, whereas other family members with identical SDH mutations remain free of metastatic disease (see modifier genes above and mev-1 below). ('SDH', 'Gene', (77, 80)) ('SDH', 'Gene', '6390', (202, 205)) ('PPGL', 'Chemical', '-', (152, 156)) ('SDH', 'Gene', (37, 40)) ('SDHB', 'Gene', '6390', (37, 41)) ('SDHB', 'Gene', '6390', (77, 81)) ('SDH', 'Gene', (202, 205)) ('SDH', 'Gene', '6390', (77, 80)) ('suffer from', 'Reg', (96, 107)) ('SDHB', 'Gene', (37, 41)) ('mutations', 'Var', (82, 91)) ('SDHB', 'Gene', (77, 81)) ('patients', 'Species', '9606', (51, 59)) ('SDH', 'Gene', '6390', (37, 40)) 5655 32859697 We hypothesized that a critical advance would be the establishment of a tractable animal model of an aggressive germ line form of SDHB mutation (see below). ('SDHB', 'Gene', '6390', (130, 134)) ('mutation', 'Var', (135, 143)) ('SDHB', 'Gene', (130, 134)) 5661 32859697 When this Pro211 was mutated, which corresponds to Pro197 in the human SDHB protein, SDH assembly and function were impaired, leading to increased superoxide anion production and perturbed mitochondrial respiration. ('SDH', 'Gene', (71, 74)) ('function', 'MPA', (102, 110)) ('human', 'Species', '9606', (65, 70)) ('increased superoxide anion', 'Phenotype', 'HP:0031836', (137, 163)) ('assembly', 'MPA', (89, 97)) ('SDH', 'Gene', (85, 88)) ('mitochondrial respiration', 'MPA', (189, 214)) ('SDHB', 'Gene', '6390', (71, 75)) ('superoxide anion production', 'MPA', (147, 174)) ('impaired', 'NegReg', (116, 124)) ('SDH', 'Gene', '6390', (71, 74)) ('perturbed', 'Reg', (179, 188)) ('SDHB', 'Gene', (71, 75)) ('Pro211', 'Var', (10, 16)) ('increased', 'PosReg', (137, 146)) ('superoxide anion', 'Chemical', 'MESH:D013481', (147, 163)) ('SDH', 'Gene', '6390', (85, 88)) ('Pro197', 'Var', (51, 57)) 5662 32859697 Our interest in SDHx was prompted by a family with an Arg230His missense SDHB mutation that leads to a familial form of malignant PHEO. ('SDH', 'Gene', '6390', (73, 76)) ('familial form of malignant PHEO', 'Disease', (103, 134)) ('SDHB', 'Gene', '6390', (73, 77)) ('SDH', 'Gene', '6390', (16, 19)) ('Arg230His', 'SUBSTITUTION', 'None', (54, 63)) ('SDH', 'Gene', (73, 76)) ('leads to', 'Reg', (92, 100)) ('Arg230His', 'Var', (54, 63)) ('SDH', 'Gene', (16, 19)) ('SDHB', 'Gene', (73, 77)) 5664 32859697 It was found that her non-identical twin children (twins amongst four siblings) and her own adult brother also carried Arg230His. ('Arg230His', 'SUBSTITUTION', 'None', (119, 128)) ('children', 'Species', '9606', (41, 49)) ('Arg230His', 'Var', (119, 128)) ('carried', 'Reg', (111, 118)) 5666 32859697 The Arg230His mutation in this family corresponds to the C. elegans Arg244His SDHB-1 mutation. ('Arg244His', 'Var', (68, 77)) ('SDHB-1', 'Gene', '174482', (78, 84)) ('Arg230His', 'Var', (4, 13)) ('SDHB-1', 'Gene', (78, 84)) ('Arg244His', 'SUBSTITUTION', 'None', (68, 77)) ('C. elegans', 'Species', '6239', (57, 67)) ('Arg230His', 'SUBSTITUTION', 'None', (4, 13)) 5667 32859697 First, we built nematode models of this SDHB mutation, where we used an existing sdhb-1(gk165) deletional worm and then generated two transgenic lines carrying either the above Arg244His mutation or its genomic wild-type SDHB as a control. ('SDHB', 'Gene', '6390', (40, 44)) ('Arg244His', 'Var', (177, 186)) ('SDHB', 'Gene', '6390', (221, 225)) ('SDHB', 'Gene', (221, 225)) ('SDHB', 'Gene', (40, 44)) ('Arg244His', 'SUBSTITUTION', 'None', (177, 186)) ('mutation', 'Var', (45, 53)) ('sdhb-1', 'Gene', (81, 87)) ('sdhb-1', 'Gene', '174482', (81, 87)) 5668 32859697 Unexpectedly, our results showed that although fully deletional 'null' mutants arrest development soon after egg hatching at the L2 larval stage, the missense Arg244His point mutants develop much further, to the last larval L4 stage, but thereafter can only generate sterile adults. ('arrest', 'Disease', 'MESH:D006323', (79, 85)) ('Arg244His', 'SUBSTITUTION', 'None', (159, 168)) ('arrest', 'Disease', (79, 85)) ('development', 'CPA', (86, 97)) ('Arg244His', 'Var', (159, 168)) 5669 32859697 Next, we analyzed the metabolic profile of the mutants using complementary metabolic and genetic approaches, finding that Arg244His mutant animals are metabolically very different from their SDHB-null counterparts in a manner that cannot be explained simply by their differential timing of developmental arrest. ('SDHB', 'Gene', (191, 195)) ('developmental arrest', 'Disease', (290, 310)) ('Arg244His', 'Var', (122, 131)) ('developmental arrest', 'Disease', 'MESH:D006323', (290, 310)) ('developmental arrest', 'Phenotype', 'HP:0007281', (290, 310)) ('Arg244His', 'SUBSTITUTION', 'None', (122, 131)) ('SDHB', 'Gene', '6390', (191, 195)) 5670 32859697 The missense mutants (but not the null mutants) display aberrant glycolytic activity, principally manifesting as highly elevated lactate and pyruvate levels. ('lactate', 'Chemical', 'MESH:D019344', (129, 136)) ('glycolytic activity', 'MPA', (65, 84)) ('elevated', 'PosReg', (120, 128)) ('pyruvate', 'Chemical', 'MESH:D019289', (141, 149)) ('missense mutants', 'Var', (4, 20)) 5671 32859697 Finally, bioinformatics analysis, alongside models of the SDH structure, led us to propose a pathway disorder following this missense mutation. ('SDH', 'Gene', (58, 61)) ('missense mutation', 'Var', (125, 142)) ('SDH', 'Gene', '6390', (58, 61)) 5672 32859697 The combined data suggest the existence of a missense-mutation-dependent, rewired form of metabolism reminiscent of the Warburg effect metabolic reprogramming that is characteristic of tumor cells. ('tumor', 'Disease', (185, 190)) ('metabolism', 'MPA', (90, 100)) ('tumor', 'Disease', 'MESH:D009369', (185, 190)) ('missense-mutation-dependent', 'Var', (45, 72)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) 5673 32859697 Our animal model not only provides insight into a heritable SDH impairment, but also creates a useful tool that might help to not only decipher the enigmatic nature of other SDHx-associated pathologies, but also shed light on the genesis of aberrant glycolysis following just one missense mutation within complex II of mitochondria. ('SDH', 'Gene', (60, 63)) ('SDH', 'Gene', (174, 177)) ('glycolysis', 'MPA', (250, 260)) ('SDH impairment', 'Disease', (60, 74)) ('missense mutation', 'Var', (280, 297)) ('aberrant glycolysis', 'Phenotype', 'HP:0004366', (241, 260)) ('SDH', 'Gene', '6390', (60, 63)) ('SDH impairment', 'Disease', 'MESH:D060825', (60, 74)) ('SDH', 'Gene', '6390', (174, 177)) 5677 32859697 In order to better understand the consequences of the familial p.Arg230His (SDHB c.689G>A), we generated the corresponding mutation, Arg244His (G731A in the cDNA) in the worm (Knudra Transgenics, Murray, UT, USA). ('G731A', 'Mutation', 'c.731G>A', (144, 149)) ('p.Arg230His', 'Mutation', 'p.R230H', (63, 74)) ('SDHB', 'Gene', '6390', (76, 80)) ('Arg244His', 'Var', (133, 142)) ('SDHB', 'Gene', (76, 80)) ('Arg244His', 'SUBSTITUTION', 'None', (133, 142)) ('c.689G>A', 'Mutation', 'c.689G>A', (81, 89)) 5681 32859697 These transgenic strains each contain two corresponding transgenic sdhb-1 copies on their X chromosomes in addition to their endogenous copies on chromosome II. ('sdhb-1', 'Gene', '174482', (67, 73)) ('copies', 'Var', (74, 80)) ('sdhb-1', 'Gene', (67, 73)) 5682 32859697 To create animals carrying only two transgenic wild-type or only two G731A point mutant copies, COP957 and COP952 strains were crossed into the sdhb-1(gk165) null background. ('G731A', 'Var', (69, 74)) ('sdhb-1', 'Gene', (144, 150)) ('sdhb-1', 'Gene', '174482', (144, 150)) ('G731A', 'Mutation', 'c.731G>A', (69, 74)) 5686 32859697 First, we crossed wild-type (COP957) and G731A point mutant (COP952) transgenic lines into sdhb-1(gk165) null mutant background and determined whether these transgenes were able to rescue the deletion caused by gk165. ('G731A', 'Var', (41, 46)) ('G731A', 'Mutation', 'c.731G>A', (41, 46)) ('gk165', 'Gene', (211, 216)) ('sdhb-1', 'Gene', (91, 97)) ('deletion', 'MPA', (192, 200)) ('sdhb-1', 'Gene', '174482', (91, 97)) 5687 32859697 In contrast, the G731A rescue generated sterile adults with a protruding vulva (the 'Pvl' phenotype; ); these phenotypes were not further analyzed. ('G731A', 'Mutation', 'c.731G>A', (17, 22)) ('protruding vulva', 'MPA', (62, 78)) ('G731A', 'Var', (17, 22)) 5688 32859697 Henceforth, we refer to the G731A point mutant animals on a deletional background as R244H (Arg244His) (Fig. ('G731A', 'Mutation', 'c.731G>A', (28, 33)) ('R244H', 'SUBSTITUTION', 'None', (85, 90)) ('R244H', 'Var', (85, 90)) ('Arg244His', 'SUBSTITUTION', 'None', (92, 101)) ('G731A', 'Var', (28, 33)) ('Arg244His', 'Var', (92, 101)) 5689 32859697 To facilitate propagation, the R244H animals were also balanced using mIn1mIs14, as for gk165 deletional mutants. ('R244H', 'SUBSTITUTION', 'None', (31, 36)) ('gk165', 'Gene', (88, 93)) ('deletional mutants', 'Var', (94, 112)) ('R244H', 'Var', (31, 36)) ('mIn1', 'Gene', (70, 74)) ('mIn1', 'Gene', '16258', (70, 74)) 5690 32859697 Next, we compared the lifespan of homozygous sdhb-1(gk165) mutants against wild-type worms and observed that gk165 homozygotes survived about half as long as wild-type control N2 (WT) animals (Fig. ('gk165', 'Var', (109, 114)) ('sdhb-1', 'Gene', (45, 51)) ('mutants', 'Var', (59, 66)) ('sdhb-1', 'Gene', '174482', (45, 51)) 5692 32859697 R244H worms also showed a shortened lifespan compared to WT and WTR animals (Fig. ('R244H', 'Var', (0, 5)) ('shortened', 'NegReg', (26, 35)) ('R244H', 'SUBSTITUTION', 'None', (0, 5)) ('lifespan', 'CPA', (36, 44)) 5694 32859697 In contrast, R244H worms reached adulthood on only day 4-5, indicating delayed development (Fig. ('R244H', 'SUBSTITUTION', 'None', (13, 18)) ('R244H', 'Var', (13, 18)) ('delayed development', 'Phenotype', 'HP:0001263', (71, 90)) ('delayed development', 'CPA', (71, 90)) 5695 32859697 In order to investigate the proteins generated by the gk165 and Arg244His sdhb-1 mutant alleles, we performed Western capillary immunoassay (Wes) experiments using a human SDHB-specific antibody, which successfully cross-reacted with the worm SDHB-1 protein, likely due to the high level of conservation. ('SDHB', 'Gene', (172, 176)) ('SDHB', 'Gene', '6390', (243, 247)) ('SDHB', 'Gene', '6390', (172, 176)) ('human', 'Species', '9606', (166, 171)) ('Arg244His', 'Var', (64, 73)) ('SDHB', 'Gene', (243, 247)) ('SDHB-1', 'Gene', '174482', (243, 249)) ('gk165', 'Var', (54, 59)) ('Arg244His', 'SUBSTITUTION', 'None', (64, 73)) ('sdhb-1', 'Gene', (74, 80)) ('SDHB-1', 'Gene', (243, 249)) ('sdhb-1', 'Gene', '174482', (74, 80)) 5696 32859697 As expected, gk165 represents a null allele as no antibody specific band can be detected, whereas the same antibody recognized a single, well-defined band of 32 kDa, specific for SDHB-1 in all control samples (Fig. ('SDHB-1', 'Gene', '174482', (179, 185)) ('SDHB-1', 'Gene', (179, 185)) ('gk165', 'Var', (13, 18)) 5698 32859697 Transcriptomics data verify Wes results at the mRNA level: we find that sdhb-1 mRNA lies below the detectable limit in gk165 mutants, whereas in R244H point mutants, sdhb-1 mRNA is transcribed, although at a decreased level (Fig. ('sdhb-1', 'Gene', (72, 78)) ('sdhb-1', 'Gene', '174482', (72, 78)) ('R244H', 'SUBSTITUTION', 'None', (145, 150)) ('mutants', 'Var', (125, 132)) ('sdhb-1', 'Gene', '174482', (166, 172)) ('sdhb-1', 'Gene', (166, 172)) ('R244H', 'Var', (145, 150)) ('transcribed', 'MPA', (181, 192)) ('gk165', 'Gene', (119, 124)) ('mRNA', 'MPA', (79, 83)) 5701 32859697 Metabolic characterization of sdhb-1 deletional and SDHB Arg244His point mutants shows elevated succinate-to-fumarate ratios and attenuated oxygen consumption with reduced mitochondrial and ATP content. ('succinate-to-fumarate ratios', 'MPA', (96, 124)) ('attenuated', 'NegReg', (129, 139)) ('Arg244His', 'Var', (57, 66)) ('SDHB', 'Gene', (52, 56)) ('oxygen', 'Chemical', 'MESH:D010100', (140, 146)) ('ATP', 'Chemical', 'MESH:D000255', (190, 193)) ('elevated succinate', 'Phenotype', 'HP:0020149', (87, 105)) ('oxygen consumption', 'MPA', (140, 158)) ('deletional', 'Var', (37, 47)) ('Arg244His', 'SUBSTITUTION', 'None', (57, 66)) ('succinate', 'Chemical', 'MESH:D019802', (96, 105)) ('SDHB', 'Gene', '6390', (52, 56)) ('sdhb-1', 'Gene', (30, 36)) ('elevated', 'PosReg', (87, 95)) ('fumarate', 'Chemical', 'MESH:D005650', (109, 117)) ('sdhb-1', 'Gene', '174482', (30, 36)) ('reduced', 'NegReg', (164, 171)) 5703 32859697 Therefore, we compared TCA-related metabolite levels, glycolytic activity and the efficiency of stimulated mitochondrial oxygen consumption in sdhb-1(gk165) null mutants, R244H point mutants, WTR worms (which served as comparators for point mutants) and wild-type L2, L3 and L4 larvae as further stage-dependent controls. ('sdhb-1', 'Gene', '174482', (143, 149)) ('R244H', 'Var', (171, 176)) ('oxygen', 'Chemical', 'MESH:D010100', (121, 127)) ('stimulated mitochondrial oxygen consumption', 'MPA', (96, 139)) ('R244H', 'SUBSTITUTION', 'None', (171, 176)) ('sdhb-1', 'Gene', (143, 149)) ('TCA-related', 'MPA', (23, 34)) 5708 32859697 As expected, succinate was elevated in the sdhb-1(gk165) deletional mutant, but, interestingly, R244H point mutants also showed an equivalent succinate rise (Fig. ('succinate', 'Chemical', 'MESH:D019802', (142, 151)) ('R244H', 'SUBSTITUTION', 'None', (96, 101)) ('succinate rise', 'MPA', (142, 156)) ('succinate', 'MPA', (13, 22)) ('R244H', 'Var', (96, 101)) ('elevated', 'PosReg', (27, 35)) ('sdhb-1', 'Gene', (43, 49)) ('sdhb-1', 'Gene', '174482', (43, 49)) ('succinate rise', 'Phenotype', 'HP:0020149', (142, 156)) ('deletional mutant', 'Var', (57, 74)) ('succinate', 'Chemical', 'MESH:D019802', (13, 22)) 5709 32859697 The succinate-to-fumarate ratio was similarly elevated in both mutants despite their different developmental stages (Fig. ('elevated', 'PosReg', (46, 54)) ('mutants', 'Var', (63, 70)) ('fumarate', 'Chemical', 'MESH:D005650', (17, 25)) ('succinate-to-fumarate ratio', 'MPA', (4, 31)) ('succinate', 'Chemical', 'MESH:D019802', (4, 13)) 5710 32859697 These data pointed to a complex metabolic phenotype dependent on the mutation status of SDHB. ('mutation', 'Var', (69, 77)) ('SDHB', 'Gene', '6390', (88, 92)) ('SDHB', 'Gene', (88, 92)) 5711 32859697 For example, both aspartate and glutamate levels were decreased in R244H point mutants compared to wild-type and transgenic WTR L4 animals (Fig. ('R244H', 'Var', (67, 72)) ('decreased', 'NegReg', (54, 63)) ('aspartate', 'Chemical', 'MESH:D001224', (18, 27)) ('R244H', 'SUBSTITUTION', 'None', (67, 72)) ('glutamate', 'Chemical', 'MESH:D018698', (32, 41)) 5712 32859697 Furthermore, R244H point mutants (but not null mutants) displayed significantly higher pyruvate and lactate levels compared to their larval stage-matched L4 controls (Fig. ('R244H', 'SUBSTITUTION', 'None', (13, 18)) ('R244H', 'Var', (13, 18)) ('higher', 'PosReg', (80, 86)) ('pyruvate', 'Chemical', 'MESH:D019289', (87, 95)) ('lactate', 'Chemical', 'MESH:D019344', (100, 107)) 5713 32859697 Because the SDH complex plays a parallel role in complex II of the mitochondrial respiratory chain (see Introduction), we next determined the stimulated mitochondrial oxygen consumption rate (OCR) using the Seahorse technique in the above sdhb-1 deletional worms, point mutants and control strains. ('oxygen', 'Chemical', 'MESH:D010100', (167, 173)) ('deletional', 'Var', (246, 256)) ('SDH', 'Gene', '6390', (12, 15)) ('mitochondrial oxygen consumption rate', 'MPA', (153, 190)) ('SDH', 'Gene', (12, 15)) ('sdhb-1', 'Gene', (239, 245)) ('sdhb-1', 'Gene', '174482', (239, 245)) 5715 32859697 We used this device to study the action of two mitochondrially active compounds, protonophore carbonyl cyanide p-(trifluoromethoxy) phenylhydrazone (FCCP) and the complex IV (cytochrome oxidase) inhibitor sodium azide, to assess stimulated bioenergetics in sdhb-1 mutant worms and control strains (Fig. ('FCCP', 'Chemical', 'MESH:D002259', (149, 153)) ('sdhb-1', 'Gene', (257, 263)) ('sodium azide', 'Chemical', 'MESH:D019810', (205, 217)) ('sdhb-1', 'Gene', '174482', (257, 263)) ('mutant', 'Var', (264, 270)) ('carbonyl cyanide p-(trifluoromethoxy) phenylhydrazone', 'Chemical', 'MESH:D002259', (94, 147)) 5716 32859697 There were no differences in either the unstimulated, basal OCR or the OCR following sodium azide addition between the mutants and control animals. ('OCR following sodium azide addition', 'MPA', (71, 106)) ('sodium azide', 'Chemical', 'MESH:D019810', (85, 97)) ('mutants', 'Var', (119, 126)) 5718 32859697 In marked contrast, in gk165 deletional and R244H mutants, oxygen consumption was unchanged after FCCP injection, implying a loss of reserve capacity of respiration in these mutants (Fig. ('reserve capacity of respiration', 'MPA', (133, 164)) ('loss', 'NegReg', (125, 129)) ('deletional', 'Var', (29, 39)) ('R244H', 'Var', (44, 49)) ('gk165', 'Gene', (23, 28)) ('FCCP', 'Chemical', 'MESH:D002259', (98, 102)) ('oxygen', 'Chemical', 'MESH:D010100', (59, 65)) ('oxygen consumption', 'MPA', (59, 77)) ('R244H', 'SUBSTITUTION', 'None', (44, 49)) 5719 32859697 As the SDH complex is an integral part of complex II of the mitochondrial electron transport system and its deficiency may hamper mitochondrial integrity and hence energy production, we next estimated the functional mitochondrial content using Mitotracker dye, the uptake of which is dependent on mitochondrial transmembrane potential and measured total ATP production, using a bioluminescent ATP assay. ('ATP', 'Chemical', 'MESH:D000255', (393, 396)) ('energy production', 'CPA', (164, 181)) ('SDH', 'Gene', (7, 10)) ('mitochondrial integrity', 'CPA', (130, 153)) ('ATP', 'Chemical', 'MESH:D000255', (354, 357)) ('deficiency', 'Var', (108, 118)) ('hamper', 'NegReg', (123, 129)) ('SDH', 'Gene', '6390', (7, 10)) 5720 32859697 We observed that deletional as well as point mutants of sdhb-1 had not only significantly fewer healthy mitochondria but also demonstrated downregulated ATP production, compared to wild-type and rescued strains (Fig. ('healthy mitochondria', 'MPA', (96, 116)) ('sdhb-1', 'Gene', '174482', (56, 62)) ('fewer', 'NegReg', (90, 95)) ('sdhb-1', 'Gene', (56, 62)) ('ATP production', 'MPA', (153, 167)) ('point mutants', 'Var', (39, 52)) ('deletional', 'Var', (17, 27)) ('downregulated', 'NegReg', (139, 152)) ('ATP', 'Chemical', 'MESH:D000255', (153, 156)) 5721 32859697 The Arg244His mutation of C. elegans SDHB-1 corresponds to the Arg230His mutation of human SDHB, which leads to a familial form of malignant PPGL. ('PPGL', 'Chemical', '-', (141, 145)) ('familial form of malignant PPGL', 'Disease', (114, 145)) ('SDHB-1', 'Gene', '174482', (37, 43)) ('SDHB', 'Gene', '6390', (37, 41)) ('SDHB', 'Gene', '6390', (91, 95)) ('SDHB-1', 'Gene', (37, 43)) ('Arg244His', 'Var', (4, 13)) ('leads to', 'Reg', (103, 111)) ('Arg230His', 'Var', (63, 72)) ('SDHB', 'Gene', (37, 41)) ('SDHB', 'Gene', (91, 95)) ('C. elegans', 'Species', '6239', (26, 36)) ('Arg244His', 'SUBSTITUTION', 'None', (4, 13)) ('human', 'Species', '9606', (85, 90)) ('Arg230His', 'SUBSTITUTION', 'None', (63, 72)) 5722 32859697 1A), that Arg230 plays an equivalent role across the SDHBs of these distant species. ('SDHB', 'Gene', (53, 57)) ('Arg230', 'Chemical', '-', (10, 16)) ('SDHB', 'Gene', '6390', (53, 57)) ('Arg230', 'Var', (10, 16)) 5723 32859697 In the X-ray structure (PDBID 4YTP) of the SDHB subunit of porcine heart, the guanidino group of Arg230 of SDHB forms two hydrogen bonds with the carboxyl oxygens of the side chain of Asp224. ('guanidino', 'Chemical', '-', (78, 87)) ('Asp224', 'Chemical', '-', (184, 190)) ('SDHB', 'Gene', (107, 111)) ('Arg230', 'Chemical', '-', (97, 103)) ('SDHB', 'Gene', '6390', (43, 47)) ('oxygens', 'Chemical', 'MESH:D010100', (155, 162)) ('hydrogen', 'Chemical', 'MESH:D006859', (122, 130)) ('Arg230', 'Var', (97, 103)) ('SDHB', 'Gene', (43, 47)) ('SDHB', 'Gene', '6390', (107, 111)) 5724 32859697 In addition, Arg230 is hydrogen bonded with the peptide backbone atoms of residues Glu154, Tyr156 and Phe226. ('Arg230', 'Var', (13, 19)) ('Phe226', 'Var', (102, 108)) ('Glu154', 'Chemical', '-', (83, 89)) ('hydrogen', 'Chemical', 'MESH:D006859', (23, 31)) ('Tyr156', 'Var', (91, 97)) ('hydrogen bonded', 'Reg', (23, 38)) ('Arg230', 'Chemical', '-', (13, 19)) ('Tyr156', 'Chemical', '-', (91, 97)) ('Phe226', 'Chemical', '-', (102, 108)) ('Glu154', 'Var', (83, 89)) 5726 32859697 Hence, substitution of Arg230 by other residues, such as His, Cys, Gly and Leu, is likely to disrupt the strong hydrogen bonding between residues 224 and 230, which might impair protein function (see Discussion). ('protein', 'Protein', (178, 185)) ('impair', 'NegReg', (171, 177)) ('His', 'Chemical', 'MESH:D006639', (57, 60)) ('Gly', 'Var', (67, 70)) ('hydrogen', 'Chemical', 'MESH:D006859', (112, 120)) ('disrupt', 'NegReg', (93, 100)) ('Leu', 'Var', (75, 78)) ('strong hydrogen bonding', 'MPA', (105, 128)) ('Arg230', 'Chemical', '-', (23, 29)) ('Leu', 'Chemical', 'MESH:D007930', (75, 78)) ('Cys', 'Var', (62, 65)) ('Cys', 'Chemical', 'MESH:D003545', (62, 65)) ('Gly', 'Chemical', 'MESH:D005998', (67, 70)) ('Arg230', 'Var', (23, 29)) 5727 32859697 In order to probe the effect of R230H mutation in human SDHB, we constructed homology models of the human SDHA/B complex for the wild type and R230H mutant, based on the above structure of the porcine SDHB subunit (Fig. ('SDHA', 'Gene', (106, 110)) ('R230H', 'Var', (143, 148)) ('SDHB', 'Gene', '6390', (201, 205)) ('SDHB', 'Gene', (56, 60)) ('SDHB', 'Gene', (201, 205)) ('R230H', 'Mutation', 'p.R230H', (143, 148)) ('SDHB', 'Gene', '6390', (56, 60)) ('human', 'Species', '9606', (100, 105)) ('R230H', 'Mutation', 'p.R230H', (32, 37)) ('SDHA', 'Gene', '6389', (106, 110)) ('human', 'Species', '9606', (50, 55)) 5728 32859697 The difference in averaged pairwise contacts from wild type to R230H mutant indicates a reduction of about five inter-residue contacts upon the mutation (Fig. ('R230H', 'Mutation', 'p.R230H', (63, 68)) ('reduction', 'NegReg', (88, 97)) ('R230H', 'Var', (63, 68)) 5731 32859697 We found that expression of genes encoding vitellogenins (such as vit-2, vit-5, vit-6) and genes required to build the cuticle (for example, col-140, col-122, col-123 or bli-6) were increased in the point mutant worms, consistent with their later developmental arrest point (point mutants develop to adulthood whereas null mutants arrest at L2). ('increased', 'PosReg', (182, 191)) ('point mutant', 'Var', (199, 211)) ('arrest', 'Disease', (261, 267)) ('col-123', 'Gene', (159, 166)) ('expression', 'MPA', (14, 24)) ('arrest', 'Disease', 'MESH:D006323', (331, 337)) ('developmental arrest', 'Disease', (247, 267)) ('col-122', 'Gene', (150, 157)) ('developmental arrest', 'Disease', 'MESH:D006323', (247, 267)) ('arrest', 'Disease', (331, 337)) ('col-140', 'Gene', (141, 148)) ('bli-6', 'Gene', (170, 175)) ('arrest', 'Disease', 'MESH:D006323', (261, 267)) ('developmental arrest', 'Phenotype', 'HP:0007281', (247, 267)) 5732 32859697 We observed that R244H point mutants also show a decreased expression of germline-specific genes (gld-1 or spch-1) when compared to wild-type worms, which might relate to the sterility of R244H animals. ('R244H', 'SUBSTITUTION', 'None', (188, 193)) ('R244H', 'SUBSTITUTION', 'None', (17, 22)) ('spch-1', 'Gene', '93986', (107, 113)) ('gld-1', 'Gene', (98, 103)) ('R244H', 'Var', (188, 193)) ('sterility', 'Disease', (175, 184)) ('R244H', 'Var', (17, 22)) ('decreased', 'NegReg', (49, 58)) ('spch-1', 'Gene', (107, 113)) ('expression', 'MPA', (59, 69)) 5733 32859697 Interestingly, given the neurological nature of the disease, in deletional mutants, some genes associated with the nervous system (for example, C06B3.6, B0205.13, F18E3.12, F09F7.6) are highly overexpressed, which requires further study (data not shown). ('B0205.13', 'Var', (153, 161)) ('deletional mutants', 'Var', (64, 82)) ('F18E3.12', 'Var', (163, 171)) ('C06B3.6', 'Var', (144, 151)) ('F09F7.6', 'CellLine', 'CVCL:L036', (173, 180)) ('overexpressed', 'PosReg', (193, 206)) ('F09F7.6', 'Var', (173, 180)) 5734 32859697 Next, we focused on genes related to the observed differences in the metabolic profiles of sdhb-1 deletional and point mutants (Fig. ('deletional', 'Var', (98, 108)) ('sdhb-1', 'Gene', (91, 97)) ('point mutants', 'Var', (113, 126)) ('sdhb-1', 'Gene', '174482', (91, 97)) 5735 32859697 Because our LC-MS data revealed a differentially compromised TCA cycle in sdhb-1 null compared to point mutants (e.g. ('compromised', 'NegReg', (49, 60)) ('sdhb-1', 'Gene', (74, 80)) ('sdhb-1', 'Gene', '174482', (74, 80)) ('null', 'Var', (81, 85)) ('TCA cycle', 'MPA', (61, 70)) 5737 32859697 First, we compared their expression levels in the null sdhb-1(gk165) and R244H mutants versus their stage-specific control strains (Fig. ('sdhb-1', 'Gene', (55, 61)) ('expression levels', 'MPA', (25, 42)) ('sdhb-1', 'Gene', '174482', (55, 61)) ('R244H', 'SUBSTITUTION', 'None', (73, 78)) ('R244H', 'Var', (73, 78)) 5743 32859697 In deletional mutants, the relatively lowly expressed genes included sdha-1 and fum-1; the moderately expressed genes included glutamate dehydrogenase (gdh-1) and malic enzyme (men-1). ('hydrogen', 'Chemical', 'MESH:D006859', (139, 147)) ('deletional mutants', 'Var', (3, 21)) ('glutamate', 'Chemical', 'MESH:D018698', (127, 136)) ('men-1', 'Gene', '4221', (177, 182)) ('fum-1', 'Gene', (80, 85)) ('gdh-1', 'Gene', '2746', (152, 157)) ('sdha-1', 'Gene', (69, 75)) ('men-1', 'Gene', (177, 182)) ('gdh-1', 'Gene', (152, 157)) 5744 32859697 In point mutants, highly selectively elevated expressed genes included idh-2 and ldh-1, compared to aco-2, icl-1, pyc-1 and pck-1/2, which were increased in both mutants (Fig. ('pyc-1', 'Gene', '260434', (114, 119)) ('point mutants', 'Var', (3, 16)) ('pyc-1', 'Gene', (114, 119)) ('idh-2', 'Gene', (71, 76)) ('aco-2', 'Gene', '50', (100, 105)) ('elevated', 'PosReg', (37, 45)) ('pck-1/2', 'Gene', (124, 131)) ('ldh-1', 'Gene', (81, 86)) ('idh-2', 'Gene', '3418', (71, 76)) ('aco-2', 'Gene', (100, 105)) ('expressed genes', 'MPA', (46, 61)) ('pck-1/2', 'Gene', '5105;5106', (124, 131)) 5745 32859697 Expression of icl-1, the bifunctional key enzyme of the glyoxylate shunt, showed the most remarkable change in both deletional and point mutants compared to the appropriate controls (~20-fold or 10-fold change in deletional and point mutants, respectively; Fig. ('Expression', 'MPA', (0, 10)) ('deletional', 'Var', (116, 126)) ('icl-1', 'Gene', (14, 19)) ('point mutants', 'Var', (131, 144)) ('glyoxylate', 'Chemical', 'MESH:C031150', (56, 66)) ('change', 'Reg', (101, 107)) 5746 32859697 qPCR data also confirmed results found in metabolic analysis: ldh-1, which generates lactate from pyruvate, was strongly and selectively increased in point mutant animals (Fig. ('ldh-1', 'Gene', (62, 67)) ('pyruvate', 'Chemical', 'MESH:D019289', (98, 106)) ('point mutant', 'Var', (150, 162)) ('lactate', 'Chemical', 'MESH:D019344', (85, 92)) ('lactate from pyruvate', 'MPA', (85, 106)) ('increased', 'PosReg', (137, 146)) 5747 32859697 Interestingly, only R244H mutants showed increased aco-2, idh-2, sdha-1, fum-1 and mdh-2 expression. ('idh-2', 'Gene', '3418', (58, 63)) ('R244H', 'SUBSTITUTION', 'None', (20, 25)) ('expression', 'MPA', (89, 99)) ('increased', 'PosReg', (41, 50)) ('aco-2', 'Gene', '50', (51, 56)) ('R244H', 'Var', (20, 25)) ('mdh-2', 'Gene', (83, 88)) ('sdha-1', 'Gene', (65, 71)) ('fum-1', 'Gene', (73, 78)) ('idh-2', 'Gene', (58, 63)) ('mdh-2', 'Gene', '4191', (83, 88)) ('aco-2', 'Gene', (51, 56)) 5749 32859697 Based on our metabolomic data, the glyoxylate cycle plays an important role in the metabolism of sdhb-1 mutants as we found that isocitrate lyase (icl-1) expression was significantly elevated in both mutant backgrounds (Fig. ('glyoxylate', 'Chemical', 'MESH:C031150', (35, 45)) ('mutants', 'Var', (104, 111)) ('isocitrate', 'MPA', (129, 139)) ('mutant', 'Var', (200, 206)) ('sdhb-1', 'Gene', (97, 103)) ('expression', 'MPA', (154, 164)) ('sdhb-1', 'Gene', '174482', (97, 103)) ('isocitrate', 'Chemical', 'MESH:C034219', (129, 139)) ('elevated', 'PosReg', (183, 191)) 5750 32859697 We first attempted to attenuate the glyoxylate shunt by silencing ICL-1 activity by feeding sdhb-1 mutants with HT115 bacteria expressing double-stranded RNA (dsRNA) specific for icl-1 [icl-1(RNAi)]. ('ICL-1 activity', 'MPA', (66, 80)) ('sdhb-1', 'Gene', '174482', (92, 98)) ('glyoxylate', 'Chemical', 'MESH:C031150', (36, 46)) ('HT115', 'CellLine', 'CVCL:2520', (112, 117)) ('sdhb-1', 'Gene', (92, 98)) ('glyoxylate', 'MPA', (36, 46)) ('mutants', 'Var', (99, 106)) ('attenuate', 'NegReg', (22, 31)) ('silencing', 'NegReg', (56, 65)) 5751 32859697 This influenced the lifespan and viability of sdhb-1(-) null mutants as follows: icl-1(RNAi) treatment resulted in partially penetrant lethality of gk165 mutant embryos (Fig. ('mutant', 'Var', (154, 160)) ('partially penetrant lethality', 'CPA', (115, 144)) ('influenced', 'Reg', (5, 15)) ('sdhb-1', 'Gene', (46, 52)) ('sdhb-1', 'Gene', '174482', (46, 52)) ('gk165', 'Gene', (148, 153)) 5754 32859697 As point mutants showed a significant increase in lactate dehydrogenase (ldh-1) expression, we applied an inhibitor that targets the human LDH-1 homolog lactate dehydrogenase A (GSK2837808A) and is known to inhibit tumorigenesis in mouse models. ('ldh-1', 'Gene', (73, 78)) ('inhibit', 'NegReg', (207, 214)) ('lactate dehydrogenase A', 'Gene', '3939', (153, 176)) ('tumor', 'Phenotype', 'HP:0002664', (215, 220)) ('lactate', 'MPA', (50, 57)) ('GSK2837808A', 'Chemical', 'MESH:C000612070', (178, 189)) ('increase', 'PosReg', (38, 46)) ('hydrogen', 'Chemical', 'MESH:D006859', (60, 68)) ('lactate dehydrogenase A', 'Gene', (153, 176)) ('expression', 'MPA', (80, 90)) ('human', 'Species', '9606', (133, 138)) ('hydrogen', 'Chemical', 'MESH:D006859', (163, 171)) ('LDH-1', 'Gene', (139, 144)) ('tumor', 'Disease', (215, 220)) ('lactate', 'Chemical', 'MESH:D019344', (153, 160)) ('lactate', 'Chemical', 'MESH:D019344', (50, 57)) ('tumor', 'Disease', 'MESH:D009369', (215, 220)) ('mouse', 'Species', '10090', (232, 237)) ('GSK2837808A', 'Var', (178, 189)) 5755 32859697 GSK2837808A arrested the development of R244H point mutants at an earlier time point, such that R244H mutant embryos grown on bacteria and the LDH-A inhibitor at 10 microM concentration arrested development at the L2/L3 larval stage in 12.4% of cases, whereas the untreated controls reached adulthood but remained sterile (Fig. ('LDH-A', 'Gene', (143, 148)) ('arrest', 'Disease', 'MESH:D006323', (186, 192)) ('R244H', 'Var', (40, 45)) ('R244H', 'SUBSTITUTION', 'None', (96, 101)) ('arrest', 'Disease', 'MESH:D006323', (12, 18)) ('R244H', 'Var', (96, 101)) ('arrest', 'Disease', (186, 192)) ('GSK2837808A', 'Chemical', 'MESH:C000612070', (0, 11)) ('arrest', 'Disease', (12, 18)) ('LDH-A', 'Gene', '3939', (143, 148)) ('R244H', 'SUBSTITUTION', 'None', (40, 45)) ('development at the L2/L3 larval stage', 'CPA', (195, 232)) 5758 32859697 Our second aim was to determine whether a worm model would enable a better understanding of the different biological backgrounds following different sdhb mutations, only some of which are associated with an increased risk of malignant PPGL. ('associated', 'Reg', (188, 198)) ('PPGL', 'Chemical', '-', (235, 239)) ('sdhb', 'Gene', '6390', (149, 153)) ('sdhb', 'Gene', (149, 153)) ('mutations', 'Var', (154, 163)) 5760 32859697 To that end, using bioinformatic tools, we also explored the structural consequences of one SDHB missense mutation that might affect the SDHA-SDHB interface. ('SDHB', 'Gene', (142, 146)) ('SDHB', 'Gene', '6390', (92, 96)) ('missense mutation', 'Var', (97, 114)) ('SDHA', 'Gene', '6389', (137, 141)) ('SDHB', 'Gene', (92, 96)) ('affect', 'Reg', (126, 132)) ('SDHB', 'Gene', '6390', (142, 146)) ('SDHA', 'Gene', (137, 141)) 5761 32859697 Amongst SDHB mutations, we focused on worms bearing the Arg230His missense mutation that is causal of a familial form of PPGL. ('PPGL', 'Chemical', '-', (121, 125)) ('Arg230His', 'SUBSTITUTION', 'None', (56, 65)) ('SDHB', 'Gene', '6390', (8, 12)) ('SDHB', 'Gene', (8, 12)) ('Arg230His', 'Var', (56, 65)) ('mutations', 'Var', (13, 22)) 5762 32859697 We generated two transgenic lines carrying the Arg244His missense mutation (corresponding to human Arg230His) and genomic wild-type sdhb-1. ('Arg244His', 'Var', (47, 56)) ('Arg230His', 'Var', (99, 108)) ('sdhb-1', 'Gene', (132, 138)) ('human', 'Species', '9606', (93, 98)) ('sdhb-1', 'Gene', '174482', (132, 138)) ('Arg244His', 'SUBSTITUTION', 'None', (47, 56)) ('Arg230His', 'SUBSTITUTION', 'None', (99, 108)) 5764 32859697 As expected, only the wild-type SDHB transgene efficiently rescued the L2 larval arrest that is characteristic of the SDHB null mutant. ('SDHB', 'Gene', '6390', (118, 122)) ('SDHB', 'Gene', '6390', (32, 36)) ('SDHB', 'Gene', (118, 122)) ('SDHB', 'Gene', (32, 36)) ('mutant', 'Var', (128, 134)) ('rescued', 'PosReg', (59, 66)) ('arrest', 'Disease', 'MESH:D006323', (81, 87)) ('arrest', 'Disease', (81, 87)) 5765 32859697 In contrast, the point mutant corresponding to human Arg230His was unable to fully complement the deletional phenotype, producing only sterile adults with a significantly shortened lifespan of a similar degree to that of null mutants. ('Arg230His', 'Var', (53, 62)) ('shortened', 'NegReg', (171, 180)) ('Arg230His', 'SUBSTITUTION', 'None', (53, 62)) ('human', 'Species', '9606', (47, 52)) 5766 32859697 These data are consistent with known lifespan-shortening effects of mutations in the C. elegans SDHC mev-1 subunit. ('SDHC', 'Gene', (96, 100)) ('SDHC', 'Gene', '6391', (96, 100)) ('mutations', 'Var', (68, 77)) ('lifespan-shortening', 'CPA', (37, 56)) ('C. elegans', 'Species', '6239', (85, 95)) 5767 32859697 To gain more insight into the nature of gk165 and Arg244His mutant alleles, we examined whether SDHB is transcribed and translated in these mutant backgrounds. ('Arg244His', 'SUBSTITUTION', 'None', (50, 59)) ('gk165', 'Var', (40, 45)) ('SDHB', 'Gene', '6390', (96, 100)) ('SDHB', 'Gene', (96, 100)) ('Arg244His', 'Var', (50, 59)) 5769 32859697 We first confirmed that gk165 represents a true null allele as in this background SDHB-1 protein is absent. ('absent', 'NegReg', (100, 106)) ('gk165', 'Var', (24, 29)) ('SDHB-1', 'Gene', '174482', (82, 88)) ('protein', 'Protein', (89, 96)) ('SDHB-1', 'Gene', (82, 88)) 5770 32859697 In Arg244His mutants, SDHB-1 is transcribed and translated, but at a lower level compared to the wild-type control. ('SDHB-1', 'Gene', '174482', (22, 28)) ('SDHB-1', 'Gene', (22, 28)) ('Arg244His', 'Var', (3, 12)) ('translated', 'MPA', (48, 58)) ('Arg244His', 'SUBSTITUTION', 'None', (3, 12)) 5771 32859697 This result shows that the SDHB-1 R244H protein is stable enough to be detected, although it is functionally defective in the TCA cycle, given the elevated succinate-to-furmarate ratio. ('elevated succinate', 'Phenotype', 'HP:0020149', (147, 165)) ('succinate-to-furmarate ratio', 'MPA', (156, 184)) ('SDHB-1', 'Gene', (27, 33)) ('furmarate', 'Chemical', '-', (169, 178)) ('succinate', 'Chemical', 'MESH:D019802', (156, 165)) ('TCA cycle', 'MPA', (126, 135)) ('R244H', 'SUBSTITUTION', 'None', (34, 39)) ('defective', 'NegReg', (109, 118)) ('R244H', 'Var', (34, 39)) ('elevated', 'PosReg', (147, 155)) ('SDHB-1', 'Gene', '174482', (27, 33)) 5772 32859697 However, we do not know whether the SDH complex stays intact in the mutant or whether soluble SDHA is released with an attenuated function described as 'CII low activity'. ('SDH', 'Gene', '6390', (94, 97)) ('SDHA', 'Gene', '6389', (94, 98)) ('SDH', 'Gene', '6390', (36, 39)) ('SDHA', 'Gene', (94, 98)) ('SDH', 'Gene', (94, 97)) ('SDH', 'Gene', (36, 39)) ('mutant', 'Var', (68, 74)) 5773 32859697 The status of SDHA needs to be examined in both sdhb-1 deletional and point mutants in future studies. ('deletional', 'Var', (55, 65)) ('sdhb-1', 'Gene', (48, 54)) ('SDHA', 'Gene', (14, 18)) ('point mutants', 'Var', (70, 83)) ('sdhb-1', 'Gene', '174482', (48, 54)) ('SDHA', 'Gene', '6389', (14, 18)) 5775 32859697 Interestingly, point mutants showed an almost identically elevated succinate-to-fumarate ratio compared to deletional mutants, suggesting that point mutation also leads to loss of SDH activity in the TCA cycle. ('elevated succinate', 'Phenotype', 'HP:0020149', (58, 76)) ('succinate-to-fumarate ratio', 'MPA', (67, 94)) ('loss', 'NegReg', (172, 176)) ('point mutation', 'Var', (143, 157)) ('SDH', 'Gene', '6390', (180, 183)) ('activity', 'MPA', (184, 192)) ('succinate', 'Chemical', 'MESH:D019802', (67, 76)) ('TCA cycle', 'Enzyme', (200, 209)) ('elevated', 'PosReg', (58, 66)) ('SDH', 'Gene', (180, 183)) ('fumarate', 'Chemical', 'MESH:D005650', (80, 88)) 5777 32859697 Clearly, in the null state, elevated succinate cannot be further metabolized in the TCA cycle, but we saw no corresponding reduction in SDHA mRNA in the point mutant worm. ('succinate', 'Chemical', 'MESH:D019802', (37, 46)) ('SDHA', 'Gene', '6389', (136, 140)) ('reduction', 'NegReg', (123, 132)) ('point mutant', 'Var', (153, 165)) ('elevated succinate', 'Phenotype', 'HP:0020149', (28, 46)) ('SDHA', 'Gene', (136, 140)) 5778 32859697 Stimulated oxygen consumption was also equivalently reduced in both deletional and point mutant animals and was accompanied by downregulated mitochondrial and total ATP content, consistent with the notion that this related manifestation of SDH activity was eliminated equally in both mutants. ('SDH', 'Gene', '6390', (240, 243)) ('reduced', 'NegReg', (52, 59)) ('point mutant', 'Var', (83, 95)) ('ATP', 'Chemical', 'MESH:D000255', (165, 168)) ('oxygen', 'Chemical', 'MESH:D010100', (11, 17)) ('downregulated', 'NegReg', (127, 140)) ('deletional', 'Var', (68, 78)) ('SDH', 'Gene', (240, 243)) ('oxygen consumption', 'MPA', (11, 29)) 5779 32859697 These results are in line with published human data and our bioinformatic predictions suggesting that the Arg244His substitution induces a conformational change in the structure of SDHB-1 that might result in either an inactive or altered enzyme. ('inactive', 'MPA', (219, 227)) ('enzyme', 'MPA', (239, 245)) ('Arg244His', 'Var', (106, 115)) ('human', 'Species', '9606', (41, 46)) ('SDHB-1', 'Gene', '174482', (181, 187)) ('conformational change', 'MPA', (139, 160)) ('Arg244His', 'SUBSTITUTION', 'None', (106, 115)) ('SDHB-1', 'Gene', (181, 187)) 5780 32859697 Importantly, the guanidino group of Arg230 (Arg244 in worms) normally forms a conserved Asp224-Arg230 salt bridge that might be critical for the stability of SDHB proteins. ('Arg230', 'Chemical', '-', (36, 42)) ('Asp224', 'Chemical', '-', (88, 94)) ('guanidino', 'Chemical', '-', (17, 26)) ('Arg230', 'Chemical', '-', (95, 101)) ('SDHB', 'Gene', '6390', (158, 162)) ('Arg230', 'Var', (36, 42)) ('SDHB', 'Gene', (158, 162)) ('Arg244', 'Chemical', '-', (44, 50)) 5781 32859697 The importance of this salt bridge is also supported by the fact that not only the Arg230His mutation described in this work, but also missense mutation of the bridging partner's histidine Asp224His, is linked to hereditary PPGL. ('Arg230His', 'SUBSTITUTION', 'None', (83, 92)) ('missense mutation', 'Var', (135, 152)) ('histidine', 'Chemical', 'MESH:D006639', (179, 188)) ('PPGL', 'Disease', (224, 228)) ('Arg230His', 'Var', (83, 92)) ('PPGL', 'Chemical', '-', (224, 228)) ('Asp224His', 'SUBSTITUTION', 'None', (189, 198)) ('linked', 'Reg', (203, 209)) ('Asp224His', 'Var', (189, 198)) 5782 32859697 Despite the above similarities in bioenergetics, the null and point mutants show significant developmental differences: the null worms show arrested development at the L2 larval stage, whereas point mutants develop further, eventually reaching adulthood, although they are then sterile. ('arrest', 'Disease', (140, 146)) ('arrest', 'Disease', 'MESH:D006323', (140, 146)) ('point mutants', 'Var', (193, 206)) 5783 32859697 We found elevated isocitrate lyase (icl-1) expression in both mutants (confirmed by qPCR, below). ('elevated', 'PosReg', (9, 17)) ('mutants', 'Var', (62, 69)) ('isocitrate', 'MPA', (18, 28)) ('isocitrate', 'Chemical', 'MESH:C034219', (18, 28)) ('expression', 'MPA', (43, 53)) 5790 32859697 The metabolic switch between the (early) glyoxylate shunt and the (later) TCA cycle pivots at the L2/L3 larval stage, exactly when we observed arrested development in sdhb-1(gk165) deletional mutants. ('deletional mutants', 'Var', (181, 199)) ('glyoxylate', 'Chemical', 'MESH:C031150', (41, 51)) ('arrest', 'Disease', (143, 149)) ('sdhb-1', 'Gene', (167, 173)) ('sdhb-1', 'Gene', '174482', (167, 173)) ('arrest', 'Disease', 'MESH:D006323', (143, 149)) 5791 32859697 Correspondingly, transcriptomic and qPCR data showed elevated icl-1 expression in deletional mutants, which arrest at L2 larval stage, in which the glyoxylate cycle is active. ('deletional mutants', 'Var', (82, 100)) ('elevated', 'PosReg', (53, 61)) ('expression', 'MPA', (68, 78)) ('glyoxylate', 'Chemical', 'MESH:C031150', (148, 158)) ('arrest', 'Disease', 'MESH:D006323', (108, 114)) ('icl-1', 'Gene', (62, 67)) ('arrest', 'Disease', (108, 114)) 5792 32859697 icl-1 expression was also increased in Arg244His point mutants, which might compensate for the absence of SDH activity in the TCA cycle. ('icl-1 expression', 'MPA', (0, 16)) ('Arg244His', 'Var', (39, 48)) ('SDH', 'Gene', (106, 109)) ('Arg244His', 'SUBSTITUTION', 'None', (39, 48)) ('increased', 'PosReg', (26, 35)) ('SDH', 'Gene', '6390', (106, 109)) 5793 32859697 Interestingly, key enzymes of gluconeogenesis (pck-2, pyc-1) were not significantly different when point mutants were compared to the null state. ('pck-2', 'Gene', '5106', (47, 52)) ('pyc-1', 'Gene', (54, 59)) ('pyc-1', 'Gene', '260434', (54, 59)) ('pck-2', 'Gene', (47, 52)) ('point mutants', 'Var', (99, 112)) 5794 32859697 Neither was the relative expression of the message for several TCA cycle enzymes (ogdh-1, suca-1, fum-1 and mdh-2) different in R244H worms compared to wild-type controls, which suggests that the point mutants can express key components of the TCA cycle in addition to the glyoxylate cycle. ('express', 'Reg', (214, 221)) ('point', 'Var', (196, 201)) ('gdh-1', 'Gene', '2746', (83, 88)) ('glyoxylate', 'Chemical', 'MESH:C031150', (273, 283)) ('R244H', 'SUBSTITUTION', 'None', (128, 133)) ('mdh-2', 'Gene', (108, 113)) ('gdh-1', 'Gene', (83, 88)) ('R244H', 'Var', (128, 133)) ('mdh-2', 'Gene', '4191', (108, 113)) 5795 32859697 Increased expression of the message for the enzyme interconverting lactate and pyruvate (ldh-1) was confined to point mutants, consistent with our biochemical data, which showed high lactate levels only in the Arg244His point mutants. ('lactate levels', 'MPA', (183, 197)) ('lactate', 'Chemical', 'MESH:D019344', (183, 190)) ('lactate', 'Chemical', 'MESH:D019344', (67, 74)) ('Arg244His', 'SUBSTITUTION', 'None', (210, 219)) ('pyruvate', 'Chemical', 'MESH:D019289', (79, 87)) ('Arg244His', 'Var', (210, 219)) ('ldh-1', 'Gene', (89, 94)) 5796 32859697 Together, the data suggest that Arg244His point mutants, which develop into sterile adults, exhibit a higher glycolytic activity alongside a partially functioning TCA cycle, where the glyoxylate shunt likely compensates for the absence of SDH activity. ('SDH', 'Gene', (239, 242)) ('Arg244His', 'Var', (32, 41)) ('glycolytic activity', 'MPA', (109, 128)) ('glyoxylate', 'Chemical', 'MESH:C031150', (184, 194)) ('higher', 'PosReg', (102, 108)) ('Arg244His', 'SUBSTITUTION', 'None', (32, 41)) ('SDH', 'Gene', '6390', (239, 242)) 5798 32859697 In this respect, in Arg244His mutants, the glycolytic-oxphos metabolite concentrations/ratios were reminiscent of tumor cells undergoing Warburg effect, i.e. ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('Arg244His', 'Var', (20, 29)) ('tumor', 'Disease', (114, 119)) ('Arg244His', 'SUBSTITUTION', 'None', (20, 29)) ('glycolytic-oxphos metabolite concentrations/ratios', 'MPA', (43, 93)) 5800 32859697 In the work reported here, we have generated a novel nematode model for examining and evaluating the developmental and metabolic consequences of two clinically important SDHB mutations (null and point mutant). ('SDHB', 'Gene', '6390', (170, 174)) ('mutations', 'Var', (175, 184)) ('SDHB', 'Gene', (170, 174)) ('point mutant', 'Var', (195, 207)) 5801 32859697 We observed very different metabolic alterations as a result of sdhb-1 deletion in comparison to an equally cancer-proven but highly malignant (Arg230His) missense mutation. ('Arg230His', 'SUBSTITUTION', 'None', (144, 153)) ('Arg230His', 'Var', (144, 153)) ('deletion', 'Var', (71, 79)) ('cancer', 'Phenotype', 'HP:0002664', (108, 114)) ('metabolic alterations', 'MPA', (27, 48)) ('sdhb-1', 'Gene', '174482', (64, 70)) ('sdhb-1', 'Gene', (64, 70)) ('cancer', 'Disease', (108, 114)) ('cancer', 'Disease', 'MESH:D009369', (108, 114)) 5804 32859697 We found that icl-1(RNAi) treatment selectively acted on gk165 null mutants, caused a partially penetrant embryonic lethality and shortened lifespan. ('shortened', 'NegReg', (130, 139)) ('embryonic lethality', 'Disease', 'MESH:D020964', (106, 125)) ('embryonic lethality', 'Disease', (106, 125)) ('gk165', 'Gene', (57, 62)) ('acted', 'Reg', (48, 53)) ('lifespan', 'CPA', (140, 148)) ('mutants', 'Var', (68, 75)) ('caused', 'Reg', (77, 83)) 5805 32859697 These data are consistent with the idea that the glyoxylate cycle serves a critical role in null mutants by sustaining their development until the L2 stage. ('null mutants', 'Var', (92, 104)) ('sustaining', 'PosReg', (108, 118)) ('development', 'CPA', (125, 136)) ('glyoxylate', 'Chemical', 'MESH:C031150', (49, 59)) 5806 32859697 However, R244H point mutants, which are able to reach adulthood, specifically display an elevated lactate dehydrogenase (ldh-1) expression in addition to the increased icl-1 message. ('ldh-1', 'Gene', (121, 126)) ('elevated lactate dehydrogenase', 'Phenotype', 'HP:0025435', (89, 119)) ('lactate', 'Chemical', 'MESH:D019344', (98, 105)) ('elevated', 'PosReg', (89, 97)) ('lactate', 'MPA', (98, 105)) ('R244H', 'SUBSTITUTION', 'None', (9, 14)) ('expression', 'MPA', (128, 138)) ('hydrogen', 'Chemical', 'MESH:D006859', (108, 116)) ('icl-1 message', 'MPA', (168, 181)) ('R244H', 'Var', (9, 14)) ('increased', 'PosReg', (158, 167)) 5808 32859697 LDH-1 inhibition resulted in an earlier than expected L2/L3 larval arrest of point mutants, showing that LDH-1 activity is indeed crucial in their development. ('LDH-1', 'Gene', (0, 5)) ('arrest', 'Disease', 'MESH:D006323', (67, 73)) ('point mutants', 'Var', (77, 90)) ('inhibition', 'NegReg', (6, 16)) ('arrest', 'Disease', (67, 73)) ('earlier', 'CPA', (32, 39)) 5810 32859697 Our modeling approach might also be of benefit to research groups studying other SDH mutations and different TCA cycle genes linked to metabolic diseases and cancer. ('cancer', 'Phenotype', 'HP:0002664', (158, 164)) ('SDH', 'Gene', (81, 84)) ('cancer', 'Disease', 'MESH:D009369', (158, 164)) ('metabolic diseases', 'Disease', (135, 153)) ('cancer', 'Disease', (158, 164)) ('mutations', 'Var', (85, 94)) ('SDH', 'Gene', '6390', (81, 84)) ('metabolic diseases', 'Disease', 'MESH:D008659', (135, 153)) ('TCA cycle', 'Gene', (109, 118)) 5818 32859697 ]; R244H, sdhb-1(gk165)/ mIn1 [mIs14 [myo-2::gfp; pes-10::gfp] dpy-10(e128)] II. ('sdhb-1', 'Gene', (10, 16)) ('R244H', 'SUBSTITUTION', 'None', (3, 8)) ('sdhb-1', 'Gene', '174482', (10, 16)) ('mIn1', 'Gene', (25, 29)) ('R244H', 'Var', (3, 8)) ('mIn1', 'Gene', '16258', (25, 29)) 5822 32859697 In this study, we also used two transgenic strains generated by Knudra Transgene Service: sdhb-1 wild-type transgenic strain [sdhb-1p::SDHB-1(wt)::sdhb-1u] and a transgenic strain carrying the Arg244His missense mutation (caused by a G731A point mutation in the coding sequence) [sdhb-1p::SDHB-1(G731A)::sdhb-1u]. ('sdhb-1', 'Gene', (147, 153)) ('SDHB-1', 'Gene', '174482', (289, 295)) ('sdhb-1', 'Gene', (90, 96)) ('sdhb-1', 'Gene', '174482', (147, 153)) ('sdhb-1', 'Gene', '174482', (90, 96)) ('SDHB-1', 'Gene', (135, 141)) ('Arg244His', 'SUBSTITUTION', 'None', (193, 202)) ('sdhb-1', 'Gene', (280, 286)) ('sdhb-1', 'Gene', (304, 310)) ('sdhb-1', 'Gene', '174482', (280, 286)) ('sdhb-1', 'Gene', '174482', (304, 310)) ('SDHB-1', 'Gene', '174482', (135, 141)) ('Arg244His', 'Var', (193, 202)) ('sdhb-1', 'Gene', '174482', (126, 132)) ('sdhb-1', 'Gene', (126, 132)) ('G731A', 'Mutation', 'c.731G>A', (234, 239)) ('SDHB-1', 'Gene', (289, 295)) ('G731A', 'Mutation', 'c.731G>A', (296, 301)) ('G731A', 'Var', (234, 239)) 5830 32859697 Subsequently, transgenic worms were generated by biolistic transformation using the unc-119(ed3) mutant genetic background and the unc-119(+) gene as a co-transformation marker. ('unc-119', 'Gene', '9094', (131, 138)) ('unc-119', 'Gene', (84, 91)) ('unc-119', 'Gene', '9094', (84, 91)) ('mutant', 'Var', (97, 103)) ('unc-119', 'Gene', (131, 138)) 5837 32859697 We used two compounds, FCCP at 10 microM final well concentration and sodium azide at 40 mM final well concentration, to assess bioenergetics in sdhb-1 mutant worms and control strains. ('sodium azide', 'Chemical', 'MESH:D019810', (70, 82)) ('sdhb-1', 'Gene', (145, 151)) ('sdhb-1', 'Gene', '174482', (145, 151)) ('FCCP', 'Chemical', 'MESH:D002259', (23, 27)) ('mutant', 'Var', (152, 158)) 5850 32859697 The wild-type and R230H variants of human SDHA/B complex were constructed using homology modeling. ('R230H', 'Var', (18, 23)) ('R230H', 'Mutation', 'p.R230H', (18, 23)) ('SDHA', 'Gene', (42, 46)) ('human', 'Species', '9606', (36, 41)) ('SDHA', 'Gene', '6389', (42, 46)) 5862 32859697 R244H animals were treated by LDH-A inhibitor GSK2837808A (Tocris) at 1 microM and 10 microM. ('R244H', 'SUBSTITUTION', 'None', (0, 5)) ('GSK2837808A', 'Chemical', 'MESH:C000612070', (46, 57)) ('R244H', 'Var', (0, 5)) ('LDH-A', 'Gene', '3939', (30, 35)) ('GSK2837808A', 'Var', (46, 57)) ('LDH-A', 'Gene', (30, 35)) 5863 32859697 R244H strain was synchronized by NaOH/hypochlorite treatment, and embryos were put on NGM plates with a seeded lawn of OP50 bacteria containing GSK2837808A at a final concentration of 1 microM and 10 microM. ('R244H', 'SUBSTITUTION', 'None', (0, 5)) ('R244H', 'Var', (0, 5)) ('GSK2837808A', 'Chemical', 'MESH:C000612070', (144, 155)) ('NaOH', 'Chemical', '-', (33, 37)) ('OP50', 'Species', '637912', (119, 123)) ('hypochlorite', 'Chemical', 'MESH:D006997', (38, 50)) ('GSK2837808A', 'Var', (144, 155)) 5883 32130200 In patients with a known predisposition to bilateral PHEO, including those with von Hippel-Lindau (VHL), multiple endocrine neoplasia type 2 (MEN2), neurofibromatosis type 1 (NF1) and myc-associated factor X (MAX) gene mutations, the utility of 18F-FDOPA PET/CT for identifying PHEOs has been previously demonstrated. ('VHL', 'Disease', (99, 102)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (105, 140)) ('PHEO', 'Disease', (53, 57)) ('MEN2', 'Disease', (142, 146)) ('myc-associated factor X', 'Gene', '4149', (184, 207)) ('neoplasia', 'Phenotype', 'HP:0002664', (124, 133)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (245, 254)) ('NF1', 'Gene', (175, 178)) ('PHEO', 'Phenotype', 'HP:0002666', (53, 57)) ('neurofibromatosis type 1', 'Gene', (149, 173)) ('von Hippel-Lindau', 'Gene', '7428', (80, 97)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (114, 133)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (149, 166)) ('PHEO', 'Disease', 'MESH:D010673', (278, 282)) ('MAX', 'Gene', '4149', (209, 212)) ('VHL', 'Disease', 'MESH:D006623', (99, 102)) ('multiple endocrine neoplasia type 2', 'Disease', (105, 140)) ('patients', 'Species', '9606', (3, 11)) ('mutations', 'Var', (219, 228)) ('neurofibromatosis type 1', 'Gene', '4763', (149, 173)) ('PHEO', 'Disease', (278, 282)) ('PHEO', 'Disease', 'MESH:D010673', (53, 57)) ('myc-associated factor X', 'Gene', (184, 207)) ('PHEO', 'Phenotype', 'HP:0002666', (278, 282)) ('MEN2', 'Disease', 'MESH:D018813', (142, 146)) ('PHEOs', 'Chemical', '-', (278, 283)) ('von Hippel-Lindau', 'Gene', (80, 97)) ('NF1', 'Gene', '4763', (175, 178)) ('MAX', 'Gene', (209, 212)) 5902 32130200 Germline mutation testing by the Next Generation Sequencing (NGS) method revealed a heterozygous pathogenic variant MEN1 c.249_252delGTCT causing a frameshift mutation, also known as rs587776841. ('MEN1', 'Disease', 'MESH:D018761', (116, 120)) ('MEN1', 'Disease', (116, 120)) ('c.249_252delGTCT', 'Var', (121, 137)) ('rs587776841', 'Mutation', 'rs587776841', (183, 194)) ('c.249_252delGTCT', 'Mutation', 'rs587776841', (121, 137)) 5916 32130200 In this report, we describe a patient with a confirmed germline MEN1 mutation and a clinically silent PHEO. ('MEN1', 'Disease', 'MESH:D018761', (64, 68)) ('patient', 'Species', '9606', (30, 37)) ('PHEO', 'Disease', 'MESH:D010673', (102, 106)) ('PHEO', 'Disease', (102, 106)) ('mutation', 'Var', (69, 77)) ('germline', 'Var', (55, 63)) ('PHEO', 'Phenotype', 'HP:0002666', (102, 106)) ('MEN1', 'Disease', (64, 68)) 5926 32130200 Similarly, a patient with a germline mutation in MEN1 was reported with clinical findings of both MEN1 and MEN2, including a PHEO. ('MEN1', 'Disease', 'MESH:D018761', (98, 102)) ('MEN1', 'Disease', (98, 102)) ('patient', 'Species', '9606', (13, 20)) ('MEN2', 'Disease', (107, 111)) ('PHEO', 'Phenotype', 'HP:0002666', (125, 129)) ('MEN1', 'Disease', (49, 53)) ('MEN2', 'Disease', 'MESH:D018813', (107, 111)) ('MEN1', 'Disease', 'MESH:D018761', (49, 53)) ('PHEO', 'Disease', 'MESH:D010673', (125, 129)) ('germline mutation', 'Var', (28, 45)) ('PHEO', 'Disease', (125, 129)) 5927 32130200 This patient had a negative RET gene analysis of pathogenic variants but did have germline RET polymorphisms Gly691Ser and Arg982Cys. ('RET', 'Gene', (91, 94)) ('Arg982Cys', 'Var', (123, 132)) ('patient', 'Species', '9606', (5, 12)) ('Gly691Ser', 'Var', (109, 118)) ('RET', 'Gene', '5979', (28, 31)) ('Arg982Cys', 'SUBSTITUTION', 'None', (123, 132)) ('RET', 'Gene', '5979', (91, 94)) ('RET', 'Gene', (28, 31)) ('Gly691Ser', 'SUBSTITUTION', 'None', (109, 118)) 5928 32130200 It remains unclear if either of these variants, individually or in combination, were working in synergy with the MEN1 germline mutation in that patient (1132delG) or with another gene to produce features of MEN2, including pheochromocytoma and thickened corneal nerves. ('pheochromocytoma', 'Disease', 'MESH:D010673', (223, 239)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (223, 239)) ('variants', 'Var', (38, 46)) ('thickened corneal nerves', 'Phenotype', 'HP:0010726', (244, 268)) ('1132delG', 'Mutation', 'c.1132delG', (153, 161)) ('1132delG', 'Var', (153, 161)) ('MEN2', 'Disease', (207, 211)) ('patient', 'Species', '9606', (144, 151)) ('MEN2', 'Disease', 'MESH:D018813', (207, 211)) ('MEN1', 'Disease', 'MESH:D018761', (113, 117)) ('pheochromocytoma', 'Disease', (223, 239)) ('thickened', 'CPA', (244, 253)) ('MEN1', 'Disease', (113, 117)) 5944 32130200 However, data on sporadic PHEO suggests that 18F-FDOPA PET/CT may have minimally better patient-based and lesion-based detection rates than 68Ga-DOTATATE PET/CT (100% vs 90% and 94% vs 81%, respectively). ('patient', 'Species', '9606', (88, 95)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (45, 54)) ('PHEO', 'Disease', 'MESH:D010673', (26, 30)) ('PHEO', 'Disease', (26, 30)) ('68Ga-DOTATATE', 'Chemical', 'MESH:C513399', (140, 153)) ('18F-FDOPA', 'Var', (45, 54)) ('PHEO', 'Phenotype', 'HP:0002666', (26, 30)) 5947 32130200 Cluster 1 PHEOs with pseudohypoxic Krebs cycle-related gene, for example, SDHx mutations are best seen on 68Ga-DOTATATE PET/CT, while PHEOs with pseudohypoxia VHL/EPAS1-related signaling mutations are best seen on 18F-FDOPA PET/CT. ('EPAS1', 'Gene', (163, 168)) ('PHEOs', 'Chemical', '-', (134, 139)) ('SDHx', 'Gene', (74, 78)) ('68Ga-DOTATATE', 'Chemical', 'MESH:C513399', (106, 119)) ('SDHx', 'Chemical', '-', (74, 78)) ('PHEOs', 'Chemical', '-', (10, 15)) ('VHL', 'Disease', 'MESH:D006623', (159, 162)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (214, 223)) ('VHL', 'Disease', (159, 162)) ('Krebs', 'Chemical', '-', (35, 40)) ('EPAS1', 'Gene', '2034', (163, 168)) ('PHEO', 'Phenotype', 'HP:0002666', (134, 138)) ('mutations', 'Var', (79, 88)) ('PHEO', 'Phenotype', 'HP:0002666', (10, 14)) 5955 32130200 A recently described rare syndrome of pituitary adenomas plus PHEO/paraganglioma (3PAs) has been associated with mutations in SDHB (cluster 1) and RET (cluster 2), which are two of the most prevalent germline mutations in patients with PHEO/paraganglioma. ('PHEO', 'Phenotype', 'HP:0002666', (62, 66)) ('pituitary adenomas', 'Disease', (38, 56)) ('patients', 'Species', '9606', (222, 230)) ('PHEO', 'Disease', (236, 240)) ('RET', 'Gene', (147, 150)) ('mutations', 'Var', (113, 122)) ('SDHB', 'Gene', '6390', (126, 130)) ('associated', 'Reg', (97, 107)) ('PHEO', 'Phenotype', 'HP:0002666', (236, 240)) ('syndrome', 'Disease', (26, 34)) ('paraganglioma', 'Disease', (67, 80)) ('paraganglioma', 'Disease', 'MESH:D010235', (67, 80)) ('paraganglioma', 'Disease', (241, 254)) ('SDHB', 'Gene', (126, 130)) ('paraganglioma', 'Disease', 'MESH:D010235', (241, 254)) ('PHEO', 'Disease', 'MESH:D010673', (62, 66)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) ('RET', 'Gene', '5979', (147, 150)) ('PHEO', 'Disease', 'MESH:D010673', (236, 240)) ('paraganglioma', 'Phenotype', 'HP:0002668', (241, 254)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (38, 56)) ('PHEO', 'Disease', (62, 66)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (38, 56)) 5956 32130200 A report of a 54-year-old male patient with acromegaly and incidentally identified bilateral PHEO had a heterozygous germline variant of uncertain significance in MEN1 (c.1618C > T; p.Pro540Ser). ('acromegaly', 'Disease', 'MESH:D000172', (44, 54)) ('c.1618C > T; p.Pro540Ser', 'Var', (169, 193)) ('c.1618C > T', 'Mutation', 'rs745404679', (169, 180)) ('p.Pro540Ser', 'Mutation', 'rs745404679', (182, 193)) ('PHEO', 'Phenotype', 'HP:0002666', (93, 97)) ('patient', 'Species', '9606', (31, 38)) ('MEN1', 'Disease', 'MESH:D018761', (163, 167)) ('acromegaly', 'Phenotype', 'HP:0000845', (44, 54)) ('PHEO', 'Disease', 'MESH:D010673', (93, 97)) ('p.Pro540Ser', 'Var', (182, 193)) ('acromegaly', 'Disease', (44, 54)) ('MEN1', 'Disease', (163, 167)) ('PHEO', 'Disease', (93, 97)) 5963 32130200 In this study, we report a rare case of PHEO in a patient with a germline mutation in MEN1. ('PHEO', 'Disease', (40, 44)) ('MEN1', 'Disease', 'MESH:D018761', (86, 90)) ('PHEO', 'Phenotype', 'HP:0002666', (40, 44)) ('germline mutation', 'Var', (65, 82)) ('MEN1', 'Disease', (86, 90)) ('patient', 'Species', '9606', (50, 57)) ('PHEO', 'Disease', 'MESH:D010673', (40, 44)) 5975 31240094 Laboratory studies showed significant elevation of plasma normetanephrines and 3-methoxytyramine while DNA molecular analysis confirmed pathogenic mutation in the SDHB gene and genetic transmission of PGL4. ('SDHB', 'Gene', '6390', (163, 167)) ('SDHB', 'Gene', (163, 167)) ('mutation', 'Var', (147, 155)) ('normetanephrines', 'Chemical', 'MESH:D009647', (58, 74)) ('elevation', 'PosReg', (38, 47)) ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (79, 96)) ('plasma normetanephrines', 'MPA', (51, 74)) ('3-methoxytyramine', 'MPA', (79, 96)) ('PGL4', 'Gene', (201, 205)) 5989 31240094 Ligation of the venous drainage of the abdominal tumour would typically cause severe hypotension and norepinephrine would be required to control the blood pressure. ('norepinephrine', 'Chemical', 'MESH:D009638', (101, 115)) ('abdominal tumour', 'Disease', (39, 55)) ('Ligation', 'Var', (0, 8)) ('hypotension', 'Disease', 'MESH:D007022', (85, 96)) ('tumour', 'Phenotype', 'HP:0002664', (49, 55)) ('hypotension', 'Disease', (85, 96)) ('cause', 'Reg', (72, 77)) ('abdominal tumour', 'Disease', 'MESH:D000008', (39, 55)) ('hypotension', 'Phenotype', 'HP:0002615', (85, 96)) 5992 31240094 Tumour excision caused a ventricular perforation with bleeding controlled by digital pressure. ('ventricular perforation', 'Disease', (25, 48)) ('bleeding', 'Disease', 'MESH:D006470', (54, 62)) ('Tumour excision', 'Var', (0, 15)) ('bleeding', 'Disease', (54, 62)) ('excision', 'Var', (7, 15)) ('caused', 'Reg', (16, 22)) ('Tumour', 'Phenotype', 'HP:0002664', (0, 6)) 6000 31240094 PGL4 is associated with mutations in the SDHB at gene locus 1.p36.1-35. ('SDHB', 'Gene', '6390', (41, 45)) ('associated', 'Reg', (8, 18)) ('PGL4', 'Gene', (0, 4)) ('mutations', 'Var', (24, 33)) ('SDHB', 'Gene', (41, 45)) 6031 31080465 The important risk factors for hypertension are high sodium intake, low potassium diet, overweight, and obesity in Chinese population. ('overweight', 'Phenotype', 'HP:0025502', (88, 98)) ('low potassium', 'Phenotype', 'HP:0002900', (68, 81)) ('overweight', 'Disease', (88, 98)) ('sodium', 'Chemical', 'MESH:D012964', (53, 59)) ('hypertension', 'Disease', 'MESH:D006973', (31, 43)) ('low potassium diet', 'Phenotype', 'HP:0002900', (68, 86)) ('obesity', 'Phenotype', 'HP:0001513', (104, 111)) ('low', 'Var', (68, 71)) ('hypertension', 'Disease', (31, 43)) ('obesity', 'Disease', 'MESH:D009765', (104, 111)) ('hypertension', 'Phenotype', 'HP:0000822', (31, 43)) ('obesity', 'Disease', (104, 111)) ('high sodium intake', 'Phenotype', 'HP:0003228', (48, 66)) ('potassium', 'Chemical', 'MESH:D011188', (72, 81)) 6065 31080465 Studies have shown that exposure to PM2.5, PM10, SO2, and O3 is associated with increased risk of hypertension and increased mortality from cardiovascular disease. ('cardiovascular disease', 'Phenotype', 'HP:0001626', (140, 162)) ('increased', 'PosReg', (115, 124)) ('PM10', 'Var', (43, 47)) ('SO2', 'Var', (49, 52)) ('hypertension', 'Disease', (98, 110)) ('cardiovascular disease', 'Disease', 'MESH:D002318', (140, 162)) ('hypertension', 'Phenotype', 'HP:0000822', (98, 110)) ('cardiovascular disease', 'Disease', (140, 162)) ('PM2.5', 'Var', (36, 41)) ('hypertension', 'Disease', 'MESH:D006973', (98, 110)) 6071 31080465 In the Asia Pacific cohort study (APCSC) which consists of 13 Chinese populations, clinic BP was closely associated with the risk of stroke and ischemic heart disease events, and the association between elevated BP and stroke or ischemic heart disease events in Asian populations was stronger than in Australia and New Zealand populations. ('stroke', 'Phenotype', 'HP:0001297', (133, 139)) ('ischemic heart disease', 'Disease', 'MESH:D017202', (229, 251)) ('stroke', 'Disease', (133, 139)) ('ischemic heart disease', 'Disease', (229, 251)) ('stroke', 'Phenotype', 'HP:0001297', (219, 225)) ('clinic BP', 'Var', (83, 92)) ('stroke', 'Disease', (219, 225)) ('ischemic heart disease', 'Disease', 'MESH:D017202', (144, 166)) ('ischemic heart disease', 'Disease', (144, 166)) ('stroke', 'Disease', 'MESH:D020521', (133, 139)) ('elevated BP', 'Phenotype', 'HP:0032263', (203, 214)) ('associated', 'Reg', (105, 115)) ('stroke', 'Disease', 'MESH:D020521', (219, 225)) ('elevated', 'PosReg', (203, 211)) 6074 31080465 Clinical follow-up data showed that the incidence of heart failure increased with BP level. ('heart failure', 'Phenotype', 'HP:0001635', (53, 66)) ('heart failure', 'Disease', (53, 66)) ('heart failure', 'Disease', 'MESH:D006333', (53, 66)) ('BP level', 'Var', (82, 90)) 6080 31080465 Long-term clinical follow-up studies revealed that the incidence of end-stage renal disease (ESRD) also increased significantly with clinic BP. ('end-stage renal disease', 'Disease', (68, 91)) ('end-stage renal disease', 'Disease', 'MESH:D007676', (68, 91)) ('renal disease', 'Phenotype', 'HP:0000112', (78, 91)) ('ESRD', 'Disease', (93, 97)) ('end-stage renal disease', 'Phenotype', 'HP:0003774', (68, 91)) ('ESRD', 'Disease', 'MESH:D007676', (93, 97)) ('clinic BP', 'Var', (133, 142)) 6134 31080465 HBPM can be used to evaluate anti-hypertensive efficacy and long-term BP variation for days, weeks, months or even years, and can help to enhance patient's awareness of health participation, improve patient's compliance and adherence to treatment, and is suitable for long-term BP monitoring of patients. ('HBP', 'Gene', (0, 3)) ('hypertensive', 'Disease', 'MESH:D006973', (34, 46)) ('patient', 'Species', '9606', (295, 302)) ('hypertensive', 'Disease', (34, 46)) ('adherence', 'CPA', (224, 233)) ('variation', 'Var', (73, 82)) ('enhance', 'PosReg', (138, 145)) ('patient', 'Species', '9606', (199, 206)) ('HBP', 'Gene', '50865', (0, 3)) ('patients', 'Species', '9606', (295, 303)) ('men', 'Species', '9606', (242, 245)) ('compliance', 'CPA', (209, 219)) ('improve', 'PosReg', (191, 198)) ('patient', 'Species', '9606', (146, 153)) 6163 31080465 At present, normal (SBP < 120 mmHg and DBP < 80 mmHg), high normal (SBP 120-139 mmHg and/or DBP 80-89 mmHg) and hypertension (SBP >=140 mmHg and/or DBP >= 90 mmHg) are used to classify BP levels in China. ('hypertension', 'Disease', (112, 124)) ('hypertension', 'Phenotype', 'HP:0000822', (112, 124)) ('SBP', 'Var', (68, 71)) ('hypertension', 'Disease', 'MESH:D006973', (112, 124)) 6170 31080465 The diagnostic thresholds of hypertension based on HBPM >= 135/85 mmHg, which is corresponding to 140/90 mmHg of clinic BP. ('hypertension', 'Disease', (29, 41)) ('HBP', 'Gene', (51, 54)) ('hypertension', 'Phenotype', 'HP:0000822', (29, 41)) ('>= 135/85 mmHg', 'Var', (56, 70)) ('HBP', 'Gene', '50865', (51, 54)) ('hypertension', 'Disease', 'MESH:D006973', (29, 41)) 6249 31080465 Excessive drinking significantly increases the risk of developing hypertension, and its risk increases with the increasing consumption of alcohol. ('Excessive drinking', 'Phenotype', 'HP:0030082', (0, 18)) ('Excessive drinking', 'Var', (0, 18)) ('hypertension', 'Disease', 'MESH:D006973', (66, 78)) ('alcohol', 'Chemical', 'MESH:D000438', (138, 145)) ('hypertension', 'Disease', (66, 78)) ('hypertension', 'Phenotype', 'HP:0000822', (66, 78)) 6304 31080465 Clinical trials conducted in China (such as multivitamin treatment trials, meta-analysis of folic acid treatment trials and CSPPT-China stroke primary prevention trial) have shown that supplementation with folic acid can reduce plasma homocysteine concentration and reduce the risk of stroke. ('men', 'Species', '9606', (62, 65)) ('stroke', 'Phenotype', 'HP:0001297', (136, 142)) ('reduce', 'NegReg', (221, 227)) ('plasma homocysteine concentration', 'MPA', (228, 261)) ('reduce', 'NegReg', (266, 272)) ('stroke', 'Disease', 'MESH:D020521', (285, 291)) ('stroke', 'Disease', (136, 142)) ('men', 'Species', '9606', (108, 111)) ('homocysteine', 'Chemical', 'MESH:D006710', (235, 247)) ('folic acid', 'Chemical', 'MESH:D005492', (206, 216)) ('men', 'Species', '9606', (191, 194)) ('stroke', 'Phenotype', 'HP:0001297', (285, 291)) ('stroke', 'Disease', 'MESH:D020521', (136, 142)) ('stroke', 'Disease', (285, 291)) ('supplementation', 'Var', (185, 200)) ('folic acid', 'Chemical', 'MESH:D005492', (92, 102)) 6318 31080465 In previous large-scale clinical trials of antihypertensive therapy, dihydropyridine CCB was commonly used as the research agent, and it was confirmed that the antihypertensive treatment based on dihydropyridine CCB can significantly reduce the risk of stroke in hypertensives. ('stroke', 'Phenotype', 'HP:0001297', (253, 259)) ('hypertensive', 'Disease', 'MESH:D006973', (164, 176)) ('hypertensive', 'Disease', (47, 59)) ('stroke', 'Disease', (253, 259)) ('dihydropyridine CCB', 'Chemical', '-', (196, 215)) ('hypertensive', 'Disease', (164, 176)) ('hypertensives', 'Disease', 'MESH:D006973', (263, 276)) ('hypertensives', 'Disease', (263, 276)) ('dihydropyridine CCB', 'Chemical', '-', (69, 88)) ('hypertensive', 'Disease', 'MESH:D006973', (263, 275)) ('reduce', 'NegReg', (234, 240)) ('stroke', 'Disease', 'MESH:D020521', (253, 259)) ('dihydropyridine CCB', 'Var', (196, 215)) ('hypertensive', 'Disease', (263, 275)) ('men', 'Species', '9606', (182, 185)) ('hypertensive', 'Disease', 'MESH:D006973', (47, 59)) 6325 31080465 Gingival hyperplasia induced by non-dihydropyridine CCB sometimes occurs. ('Gingival hyperplasia', 'Disease', (0, 20)) ('Gingival hyperplasia', 'Phenotype', 'HP:0000212', (0, 20)) ('Gingival hyperplasia', 'Disease', 'MESH:D005885', (0, 20)) ('non-dihydropyridine CCB', 'Var', (32, 55)) ('dihydropyridine CCB', 'Chemical', '-', (36, 55)) 6372 31080465 (7) Renin inhibitors: the mechanism of renin inhibitors is a direct inhibition of renin, to reduce the production of angiotensin II, which can significantly reduce BP levels in hypertensive patients. ('angiotensin II', 'Gene', (117, 131)) ('hypertensive', 'Disease', (177, 189)) ('renin', 'Gene', '5972', (39, 44)) ('reduce', 'NegReg', (92, 98)) ('patients', 'Species', '9606', (190, 198)) ('renin', 'Gene', '5972', (82, 87)) ('Renin', 'Gene', '5972', (4, 9)) ('reduce', 'NegReg', (157, 163)) ('BP levels', 'MPA', (164, 173)) ('Renin', 'Gene', (4, 9)) ('renin', 'Gene', (39, 44)) ('inhibitors', 'Var', (45, 55)) ('angiotensin II', 'Gene', '183', (117, 131)) ('hypertensive', 'Disease', 'MESH:D006973', (177, 189)) ('renin', 'Gene', (82, 87)) 6376 31080465 (1) Indications for combination therapy: high-risk group of patients with BP >= 160/100 mmHg or 20/10 mmHg higher than that of the target BP often require two drugs for initial treatment. ('men', 'Species', '9606', (182, 185)) ('require', 'Reg', (147, 154)) ('patients', 'Species', '9606', (60, 68)) ('20/10 mmHg', 'Var', (96, 106)) 6384 31080465 a. ACEI/ARB+thiazide diuretic: ACEI and ARB can increase serum potassium slightly, and can antagonize side effects such as hypokalemia caused by long-term administration of thiazide diuretics. ('thiazide', 'Chemical', 'MESH:D049971', (12, 20)) ('ACEI', 'Var', (31, 35)) ('antagonize', 'NegReg', (91, 101)) ('hypokalemia', 'Disease', (123, 134)) ('thiazide', 'Chemical', 'MESH:D049971', (173, 181)) ('increase serum potassium', 'Phenotype', 'HP:0002153', (48, 72)) ('hypokalemia', 'Disease', 'MESH:D007008', (123, 134)) ('potassium', 'Chemical', 'MESH:D011188', (63, 72)) ('hypokalemia', 'Phenotype', 'HP:0002900', (123, 134)) ('serum potassium', 'MPA', (57, 72)) ('increase', 'PosReg', (48, 56)) 6387 31080465 A common side effect that dihydropyridine CCB has is ankle edema, which can be alleviated or offset by ACEI or ARB. ('dihydropyridine', 'Var', (26, 41)) ('ankle edema', 'Disease', (53, 64)) ('ankle edema', 'Disease', 'MESH:D016512', (53, 64)) ('edema', 'Phenotype', 'HP:0000969', (59, 64)) ('dihydropyridine CCB', 'Chemical', '-', (26, 45)) 6390 31080465 c. Dihydropyridine CCB+Thiazide diuretic: the FEVER study has confirmed that combination therapy of dihydropyridine CCB plus thiazide diuretic can reduce the risk of stroke in hypertensive patients. ('dihydropyridine CCB', 'Var', (100, 119)) ('FEVER', 'Phenotype', 'HP:0001945', (46, 51)) ('stroke', 'Disease', 'MESH:D020521', (166, 172)) ('hypertensive', 'Disease', 'MESH:D006973', (176, 188)) ('thiazide', 'Chemical', 'MESH:D049971', (125, 133)) ('hypertensive', 'Disease', (176, 188)) ('reduce', 'NegReg', (147, 153)) ('dihydropyridine CCB', 'Chemical', '-', (100, 119)) ('Dihydropyridine CCB', 'Chemical', '-', (3, 22)) ('Thiazide', 'Chemical', 'MESH:D049971', (23, 31)) ('patients', 'Species', '9606', (189, 197)) ('stroke', 'Phenotype', 'HP:0001297', (166, 172)) ('stroke', 'Disease', (166, 172)) 6416 31080465 The Guidelines for the Prevention and Treatment of Dyslipidemia in Chinese Adults (Revised 2016) for the first time clarified that the ideal cholesterol level in the primary prevention population of Chinese ASCVD is LDL-C < 2.6 mmol/L (non-HDL-C < 3.4 mmol/L). ('LDL-C < 2.6 mmol/L', 'Var', (216, 234)) ('cholesterol', 'Chemical', 'MESH:D002784', (141, 152)) ('men', 'Species', '9606', (43, 46)) ('Dyslipidemia', 'Phenotype', 'HP:0003119', (51, 63)) ('Dyslipidemia', 'Disease', 'MESH:D050171', (51, 63)) ('Dyslipidemia', 'Disease', (51, 63)) 6456 31080465 (5) For new-onset diabetes with fasting blood glucose above 11 mmol/L or HbA1c over 9%, short-term intensive insulin therapy could be adopted so as to control blood glucose and preserve islet beta-cell function as soon as possible. ('over', 'Var', (79, 83)) ('insulin', 'Gene', (109, 116)) ('blood glucose', 'Chemical', 'MESH:D001786', (159, 172)) ('diabetes', 'Disease', (18, 26)) ('insulin', 'Gene', '3630', (109, 116)) ('diabetes', 'Disease', 'MESH:D003920', (18, 26)) ('HbA1', 'Gene', '3039', (73, 77)) ('control blood glucose', 'MPA', (151, 172)) ('blood glucose', 'Chemical', 'MESH:D001786', (40, 53)) ('HbA1', 'Gene', (73, 77)) 6481 31080465 Treatment of hypertension with elevation in homocysteine (HCY) level: nutrition intervention study in Lin County and CSPPT study suggest supplement of folic acid could reduce the risk of first stroke. ('hypertension', 'Disease', 'MESH:D006973', (13, 25)) ('homocysteine', 'Chemical', 'MESH:D006710', (44, 56)) ('stroke', 'Disease', 'MESH:D020521', (193, 199)) ('hypertension', 'Disease', (13, 25)) ('hypertension', 'Phenotype', 'HP:0000822', (13, 25)) ('reduce', 'NegReg', (168, 174)) ('HCY', 'Chemical', 'MESH:D006710', (58, 61)) ('folic acid', 'Chemical', 'MESH:D005492', (151, 161)) ('stroke', 'Phenotype', 'HP:0001297', (193, 199)) ('men', 'Species', '9606', (5, 8)) ('supplement', 'Var', (137, 147)) ('men', 'Species', '9606', (143, 146)) ('stroke', 'Disease', (193, 199)) 6498 31080465 Elevation in SBP increases the risk of stroke, CHD and end stage renal disease. ('stroke', 'Disease', (39, 45)) ('CHD and end stage renal disease', 'Disease', 'MESH:D007676', (47, 78)) ('Elevation', 'Var', (0, 9)) ('end stage renal disease', 'Phenotype', 'HP:0003774', (55, 78)) ('stroke', 'Disease', 'MESH:D020521', (39, 45)) ('stroke', 'Phenotype', 'HP:0001297', (39, 45)) ('SBP', 'Gene', (13, 16)) ('renal disease', 'Phenotype', 'HP:0000112', (65, 78)) 6500 31080465 Fluctuation in BP affects treatment results and remarkably increases the risk of cardiovascular events. ('Fluctuation', 'Var', (0, 11)) ('men', 'Species', '9606', (31, 34)) ('cardiovascular', 'Disease', (81, 95)) ('cardiovascular events', 'Phenotype', 'HP:0001626', (81, 102)) ('affects', 'Reg', (18, 25)) ('increases', 'PosReg', (59, 68)) 6520 31080465 When given to the very elderly patients with postural BP variations, alpha-blockers should be used with caution and they may cause postural hypotension. ('hypotension', 'Disease', 'MESH:D007022', (140, 151)) ('postural hypotension', 'Phenotype', 'HP:0001278', (131, 151)) ('cause', 'Reg', (125, 130)) ('patients', 'Species', '9606', (31, 39)) ('hypotension', 'Disease', (140, 151)) ('hypotension', 'Phenotype', 'HP:0002615', (140, 151)) ('variations', 'Var', (57, 67)) 6534 31080465 Other risk factors include parental hypertension history, low birth weight, premature birth, high salt intake, sleep insufficiency, and physical inactivity. ('salt', 'Chemical', 'MESH:D012492', (98, 102)) ('physical inactivity', 'Disease', (136, 155)) ('premature', 'Disease', (76, 85)) ('low birth weight', 'Phenotype', 'HP:0001518', (58, 74)) ('hypertension', 'Disease', (36, 48)) ('low birth', 'Var', (58, 67)) ('hypertension', 'Phenotype', 'HP:0000822', (36, 48)) ('premature birth', 'Phenotype', 'HP:0001622', (76, 91)) ('sleep insufficiency', 'Disease', (111, 130)) ('sleep insufficiency', 'Disease', 'MESH:D012892', (111, 130)) ('hypertension', 'Disease', 'MESH:D006973', (36, 48)) ('sleep insufficiency', 'Phenotype', 'HP:0002360', (111, 130)) 6558 31080465 Hypertension is diagnosed when SBP and/or DBP >= 95th percentile for sex, age, and height on all three occasions. ('diagnosed', 'Reg', (16, 25)) ('Hypertension', 'Phenotype', 'HP:0000822', (0, 12)) ('DBP >=', 'Var', (42, 48)) ('Hypertension', 'Disease', 'MESH:D006973', (0, 12)) ('SBP', 'Disease', (31, 34)) ('Hypertension', 'Disease', (0, 12)) 6624 31080465 For patients with continuous elevation of BP, SBP >= 200 mmHg or DBP >= 110 mmHg, or with severe cardiac insufficiency, aortic dissection or hypertensive encephalopathy, antihypertensive agents should be given. ('elevation', 'PosReg', (29, 38)) ('hypertensive', 'Disease', (174, 186)) ('aortic dissection', 'Phenotype', 'HP:0002647', (120, 137)) ('cardiac insufficiency', 'Disease', 'MESH:D006331', (97, 118)) ('hypertensive encephalopathy', 'Disease', (141, 168)) ('elevation of BP', 'Phenotype', 'HP:0032263', (29, 44)) ('aortic dissection', 'Disease', (120, 137)) ('cardiac insufficiency', 'Disease', (97, 118)) ('hypertensive', 'Disease', 'MESH:D006973', (141, 153)) ('hypertensive', 'Disease', (141, 153)) ('hypertensive encephalopathy', 'Disease', 'MESH:D006973', (141, 168)) ('SBP >= 200 mmHg', 'Var', (46, 61)) ('patients', 'Species', '9606', (4, 12)) ('hypertensive', 'Disease', 'MESH:D006973', (174, 186)) ('encephalopathy', 'Phenotype', 'HP:0001298', (154, 168)) ('cardiac insufficiency', 'Phenotype', 'HP:0001635', (97, 118)) 6663 31080465 Hypertension caused by various CKD, which is called renal hypertension, is mainly divided into renal vascular hypertension and renal parenchyma hypertension. ('renal parenchyma hypertension', 'Disease', (127, 156)) ('renal hypertension', 'Disease', 'MESH:D006977', (52, 70)) ('renal vascular hypertension', 'Disease', (95, 122)) ('Hypertension', 'Phenotype', 'HP:0000822', (0, 12)) ('Hypertension', 'Disease', 'MESH:D006973', (0, 12)) ('hypertension', 'Phenotype', 'HP:0000822', (144, 156)) ('hypertension', 'Phenotype', 'HP:0000822', (58, 70)) ('renal vascular hypertension', 'Disease', 'MESH:D006977', (95, 122)) ('hypertension', 'Phenotype', 'HP:0000822', (110, 122)) ('renal parenchyma hypertension', 'Disease', 'MESH:D006977', (127, 156)) ('CKD', 'Var', (31, 34)) ('Hypertension', 'Disease', (0, 12)) ('renal hypertension', 'Disease', (52, 70)) 6667 31080465 The target of antihypertensive therapy is < 140/90 mmHg when urine albumin excretion < 30mg/24 h (or equivalence), and < 130/80 mmHg when albuminuria >= 30 mg/24 h (or equivalence). ('albuminuria', 'Phenotype', 'HP:0012592', (138, 149)) ('< 140/90 mmHg', 'Var', (42, 55)) ('hypertensive', 'Disease', 'MESH:D006973', (18, 30)) ('albuminuria', 'Disease', 'MESH:D000419', (138, 149)) ('hypertensive', 'Disease', (18, 30)) ('urine albumin excretion', 'MPA', (61, 84)) ('< 130/80 mmHg', 'Var', (119, 132)) ('albuminuria', 'Disease', (138, 149)) 6671 31080465 ACEI/ARB not only has antihypertensive effect, but also can reduce proteinuria, delay the decline of renal function, and improve the renal prognosis of CKD patients. ('patients', 'Species', '9606', (156, 164)) ('decline of renal function', 'Disease', 'MESH:D007674', (90, 115)) ('hypertensive', 'Disease', 'MESH:D006973', (26, 38)) ('reduce', 'NegReg', (60, 66)) ('renal', 'MPA', (133, 138)) ('proteinuria', 'Disease', (67, 78)) ('proteinuria', 'Phenotype', 'HP:0000093', (67, 78)) ('decline of renal function', 'Disease', (90, 115)) ('delay', 'NegReg', (80, 85)) ('ACEI/ARB', 'Var', (0, 8)) ('improve', 'PosReg', (121, 128)) ('proteinuria', 'Disease', 'MESH:D011507', (67, 78)) ('hypertensive', 'Disease', (26, 38)) 6677 31080465 The combination of aldosterone antagonists with ACEI or ARB may accelerate the risk of renal function deterioration and hyperkalemia. ('hyperkalemia', 'Disease', 'MESH:D006947', (120, 132)) ('aldosterone', 'Chemical', 'MESH:D000450', (19, 30)) ('aldosterone', 'Protein', (19, 30)) ('accelerate', 'PosReg', (64, 74)) ('renal function deterioration', 'Disease', 'MESH:D058186', (87, 115)) ('hyperkalemia', 'Phenotype', 'HP:0002153', (120, 132)) ('ACEI', 'Var', (48, 52)) ('hyperkalemia', 'Disease', (120, 132)) ('renal function deterioration', 'Disease', (87, 115)) ('combination', 'Interaction', (4, 15)) 6686 31080465 The recommended target BP in patients with diabetes mellitus is less than 130/80 mmHg (II a, B). ('less', 'Var', (64, 68)) ('patients', 'Species', '9606', (29, 37)) ('men', 'Species', '9606', (9, 12)) ('diabetes mellitus', 'Phenotype', 'HP:0000819', (43, 60)) ('diabetes mellitus', 'Disease', (43, 60)) ('diabetes mellitus', 'Disease', 'MESH:D003920', (43, 60)) 6687 31080465 Nonpharmacologic methods lasting less than three months can be instituted in diabetic patients with systolic BP 130-139 mmHg or diastolic BP 80-89 mmHg. ('diabetic', 'Disease', 'MESH:D003920', (77, 85)) ('systolic', 'Var', (100, 108)) ('diabetic', 'Disease', (77, 85)) ('patients', 'Species', '9606', (86, 94)) 6711 31080465 Among the combinations of metabolic syndrome components, abdominal obesity accompanied by hypertension and low HDL-C had the highest cardiovascular risk (increased by 5.25 times), and the risk is further increased by 16.58 times if hyperglycemia is added in. ('low HDL', 'Phenotype', 'HP:0003233', (107, 114)) ('hyperglycemia', 'Disease', 'MESH:D006943', (232, 245)) ('hypertension', 'Disease', (90, 102)) ('abdominal obesity', 'Disease', (57, 74)) ('cardiovascular', 'MPA', (133, 147)) ('abdominal obesity', 'Phenotype', 'HP:0012743', (57, 74)) ('obesity', 'Phenotype', 'HP:0001513', (67, 74)) ('hyperglycemia', 'Disease', (232, 245)) ('abdominal obesity', 'Disease', 'MESH:D056128', (57, 74)) ('metabolic syndrome', 'Disease', 'MESH:D008659', (26, 44)) ('hypertension', 'Disease', 'MESH:D006973', (90, 102)) ('metabolic syndrome', 'Disease', (26, 44)) ('hyperglycemia', 'Phenotype', 'HP:0003074', (232, 245)) ('HDL-C', 'Gene', (111, 116)) ('low', 'Var', (107, 110)) ('hypertension', 'Phenotype', 'HP:0000822', (90, 102)) 6725 31080465 The BP targeting not only reduces the incidence of cardiovascular and cerebrovascular events in these patients, but also slows down the progression of the lesion, as well as reduces the amputation rate of the patients. ('slows down', 'NegReg', (121, 131)) ('cerebrovascular events', 'Phenotype', 'HP:0001297', (70, 92)) ('patients', 'Species', '9606', (102, 110)) ('progression of', 'CPA', (136, 150)) ('BP targeting', 'Var', (4, 16)) ('patients', 'Species', '9606', (209, 217)) ('amputation rate', 'CPA', (186, 201)) ('reduces', 'NegReg', (26, 33)) ('cardiovascular', 'CPA', (51, 65)) ('reduces', 'NegReg', (174, 181)) 6782 31080465 (1) Definition: perioperative hypertension refers to an elevation of BP (SBP, DBP or PP) over 30% of baseline between the decision of operation and the end of its related therapy, or SBP >= 140 mmHg and/or DBP >= 90 mmHg during this period. ('hypertension', 'Disease', 'MESH:D006973', (30, 42)) ('elevation of BP', 'Phenotype', 'HP:0032263', (56, 71)) ('SBP', 'Var', (183, 186)) ('hypertension', 'Disease', (30, 42)) ('hypertension', 'Phenotype', 'HP:0000822', (30, 42)) ('elevation', 'PosReg', (56, 65)) 6784 31080465 (2) Risk factors: patients with hypertension history, uncontrolled BP before operation, secondary hypertension or intracranial hypertension, psychological factors such as stress, anxiety, fearness or sleeping disorder, especially those with DBP > 110 mmHg, are prone to develop perioperative BP fluctuation. ('sleeping disorder', 'Phenotype', 'HP:0002360', (200, 217)) ('develop', 'PosReg', (270, 277)) ('fearness or sleeping disorder', 'Disease', 'MESH:D012893', (188, 217)) ('hypertension', 'Disease', 'MESH:D006973', (98, 110)) ('intracranial hypertension', 'Disease', (114, 139)) ('anxiety', 'Disease', (179, 186)) ('intracranial hypertension', 'Phenotype', 'HP:0002516', (114, 139)) ('hypertension', 'Disease', (98, 110)) ('DBP > 110 mmHg', 'Var', (241, 255)) ('anxiety', 'Disease', 'MESH:D001008', (179, 186)) ('hypertension', 'Disease', 'MESH:D006973', (32, 44)) ('hypertension', 'Disease', (32, 44)) ('hypertension', 'Disease', 'MESH:D006973', (127, 139)) ('BP fluctuation', 'MPA', (292, 306)) ('hypertension', 'Disease', (127, 139)) ('hypertension', 'Phenotype', 'HP:0000822', (98, 110)) ('fearness or sleeping disorder', 'Disease', (188, 217)) ('patients', 'Species', '9606', (18, 26)) ('hypertension', 'Phenotype', 'HP:0000822', (32, 44)) ('anxiety', 'Phenotype', 'HP:0000739', (179, 186)) ('hypertension', 'Phenotype', 'HP:0000822', (127, 139)) ('intracranial hypertension', 'Disease', 'MESH:D019586', (114, 139)) 6887 31080465 The diagnosis of renal parenchymal hypertension depends on: history of kidney disease; proteinuria and hematuria; abnormal renal function; decreased eGFR; abnormal size and shape of kidney; and should take pathological biopsy of kidney when necessary. ('kidney disease', 'Phenotype', 'HP:0000112', (71, 85)) ('shape of kidney', 'Phenotype', 'HP:0012210', (173, 188)) ('abnormal renal function', 'Phenotype', 'HP:0012211', (114, 137)) ('hematuria', 'Disease', (103, 112)) ('GFR', 'Gene', (150, 153)) ('GFR', 'Gene', '9771', (150, 153)) ('abnormal renal function', 'Disease', (114, 137)) ('abnormal', 'Var', (155, 163)) ('kidney disease', 'Disease', (71, 85)) ('renal parenchymal hypertension', 'Disease', 'MESH:D006977', (17, 47)) ('hematuria', 'Disease', 'MESH:D006417', (103, 112)) ('hypertension', 'Phenotype', 'HP:0000822', (35, 47)) ('kidney disease', 'Disease', 'MESH:D007674', (71, 85)) ('abnormal renal function', 'Disease', 'MESH:D007674', (114, 137)) ('hematuria', 'Phenotype', 'HP:0000790', (103, 112)) ('proteinuria', 'Disease', (87, 98)) ('proteinuria', 'Disease', 'MESH:D011507', (87, 98)) ('renal parenchymal hypertension', 'Disease', (17, 47)) ('proteinuria', 'Phenotype', 'HP:0000093', (87, 98)) ('decreased', 'NegReg', (139, 148)) 6892 31080465 The main characteristic of renal artery stenosis is the stenosis at the main trunk or branch of renal artery, which leads to renal ischemia, significant increase of renin-angiotensin system activity thereby causing hypertension and renal hypofunction. ('renal ischemia', 'Phenotype', 'HP:0002637', (125, 139)) ('branch of renal artery', 'Disease', 'MESH:D007674', (86, 108)) ('renal hypofunction', 'Disease', (232, 250)) ('renal hypofunction', 'Disease', 'MESH:D007674', (232, 250)) ('renal artery stenosis', 'Phenotype', 'HP:0001920', (27, 48)) ('renal artery stenosis', 'Disease', 'MESH:D012078', (27, 48)) ('hypertension', 'Disease', 'MESH:D006973', (215, 227)) ('renin', 'Gene', (165, 170)) ('hypertension', 'Disease', (215, 227)) ('branch of renal artery', 'Disease', (86, 108)) ('renin', 'Gene', '5972', (165, 170)) ('renal ischemia', 'Disease', 'MESH:D007511', (125, 139)) ('leads to', 'Reg', (116, 124)) ('artery stenosis', 'Phenotype', 'HP:0100545', (33, 48)) ('hypertension', 'Phenotype', 'HP:0000822', (215, 227)) ('renal ischemia', 'Disease', (125, 139)) ('stenosis', 'Var', (56, 64)) ('renal artery stenosis', 'Disease', (27, 48)) ('increase of renin', 'Phenotype', 'HP:0000848', (153, 170)) ('increase', 'PosReg', (153, 161)) ('causing', 'Reg', (207, 214)) 6945 31080465 The mutations of monogenic inherited hypertension are mostly associated with gene mutations on renal unit ion transporters or RAS components causing dysfunction. ('hypertension', 'Disease', (37, 49)) ('hypertension', 'Phenotype', 'HP:0000822', (37, 49)) ('mutations', 'Var', (4, 13)) ('hypertension', 'Disease', 'MESH:D006973', (37, 49)) ('associated', 'Reg', (61, 71)) 6946 31080465 It can be divided into the following categories: (1) Gene mutations directly affect the function of related proteins in renal tubu-lar ion channel transport system: Liddle syndrome, Gordon syndrome, apparent mineralocortixoid excess, pregnancy-I resistancenduced hypertension caused by corticosteroid receptor mutations (2) abnormal steroid synthesis in the adrenal gland caused by Gene mutations: familial hyperaldosteronism (I, II, III), congenital adrenal hyperplasia (11beta-hydroxylase deficiency, 7 alpha-hydroxylase/17, 20-lyase deficiency, 17OHD), familial glucocorticoid resistance (3) Various neuroendocrine tumors, such as pheochromocytoma, hypertension with brachydactylia, multipleendocrineneoplasm (MEN) and Von Hippel-Lindau (VHL). ('tumors', 'Phenotype', 'HP:0002664', (618, 624)) ('Liddle syndrome', 'Disease', 'MESH:D056929', (165, 180)) ('pheochromocytoma', 'Disease', (634, 650)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (634, 650)) ('congenital adrenal hyperplasia', 'Phenotype', 'HP:0008258', (440, 470)) ('neoplasm', 'Phenotype', 'HP:0002664', (703, 711)) ('tumor', 'Phenotype', 'HP:0002664', (618, 623)) ('hypertension', 'Disease', 'MESH:D006973', (652, 664)) ('VHL', 'Disease', (741, 744)) ('neuroendocrine tumors', 'Disease', (603, 624)) ('hyperaldosteronism', 'Disease', (407, 425)) ('brachydactylia, multipleendocrineneoplasm', 'Disease', 'MESH:D059327', (670, 711)) ('mineralocortixoid excess', 'Phenotype', 'HP:0000859', (208, 232)) ('Gordon syndrome', 'Phenotype', 'HP:0030181', (182, 197)) ('hypertension', 'Disease', (652, 664)) ('hyperaldosteronism', 'Phenotype', 'HP:0000859', (407, 425)) ('mutations', 'Var', (387, 396)) ('11beta-hydroxylase deficiency', 'Disease', (472, 501)) ('hypertension', 'Disease', 'MESH:D006973', (263, 275)) ('MEN', 'Species', '9606', (713, 716)) ('11beta-hydroxylase deficiency', 'Disease', 'MESH:D054882', (472, 501)) ('hypertension', 'Disease', (263, 275)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (603, 624)) ('glucocorticoid resistance', 'Phenotype', 'HP:0008163', (565, 590)) ('Gordon syndrome', 'Disease', 'MESH:C537288', (182, 197)) ('hypertension', 'Phenotype', 'HP:0000822', (652, 664)) ('Von Hippel-Lindau', 'Gene', '7428', (722, 739)) ('Von Hippel-Lindau', 'Gene', (722, 739)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (603, 624)) ('VHL', 'Disease', 'MESH:D006623', (741, 744)) ('hypertension', 'Phenotype', 'HP:0000822', (263, 275)) ('hypertension with brachydactylia', 'Phenotype', 'HP:0001156', (652, 684)) ('Gordon syndrome', 'Disease', (182, 197)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (634, 650)) ('congenital adrenal hyperplasia', 'Disease', 'MESH:D000312', (440, 470)) ('hyperaldosteronism', 'Disease', 'MESH:D006929', (407, 425)) ('congenital adrenal hyperplasia', 'Disease', (440, 470)) ('Liddle syndrome', 'Disease', (165, 180)) ('adrenal hyperplasia', 'Phenotype', 'HP:0008221', (451, 470)) 6951 30356369 Pheochromocytoma in Congenital Cyanotic Heart Disease Studies on genome-wide transcription patterns have shown that many genetic alterations implicated in pheochromocytoma-paraganglioma (P-PGL) syndromes cluster in a common cellular pathway leading to aberrant activation of molecular response to hypoxia in normoxic conditions (the pseudohypoxia hypothesis). ('pheochromocytoma', 'Phenotype', 'HP:0002666', (155, 171)) ('hypoxia', 'Disease', (297, 304)) ('paraganglioma', 'Phenotype', 'HP:0002668', (172, 185)) ('hypoxia', 'Disease', (339, 346)) ('hypoxia', 'Disease', 'MESH:D000860', (339, 346)) ('cellular pathway', 'Pathway', (224, 240)) ('Pheochromocytoma in Congenital Cyanotic Heart Disease', 'Disease', 'MESH:D010673', (0, 53)) ('alterations', 'Var', (129, 140)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('pheochromocytoma-paraganglioma (P-PGL) syndromes cluster', 'Disease', 'MESH:D010235', (155, 211)) ('hypoxia', 'Disease', 'MESH:D000860', (297, 304)) ('activation', 'PosReg', (261, 271)) 6970 30356369 All these cardio-vascular alterations can lead to a more or less evident cyanosis with potential effects favoring the development of chromaffin cell alterations. ('cyanosis', 'Disease', 'MESH:D003490', (73, 81)) ('alterations', 'Var', (26, 37)) ('cardio-vascular alterations', 'Phenotype', 'HP:0001626', (10, 37)) ('vascular alterations', 'Phenotype', 'HP:0002597', (17, 37)) ('cyanosis', 'Phenotype', 'HP:0000961', (73, 81)) ('lead to', 'Reg', (42, 49)) ('cyanosis', 'Disease', (73, 81)) ('chromaffin', 'Chemical', '-', (133, 143)) 6973 30356369 Up to 35-40% of patients have disease-causing germline mutations and the likelihood increases in young patients. ('disease-causing', 'Reg', (30, 45)) ('patients', 'Species', '9606', (16, 24)) ('patients', 'Species', '9606', (103, 111)) ('germline mutations', 'Var', (46, 64)) 6989 30356369 The P-PGL susceptibility genes VHL, RET, SDHA, SDHAF2, SDHB, SDHC, SDHD, MAX, and TMEM127 were analyzed for germline mutations and large deletions, via direct sequencing and multiplex ligation-dependent probe amplification methods; RET was only analyzed by direct sequencing. ('RET', 'Gene', (36, 39)) ('SDHA', 'Gene', (41, 45)) ('SDHD', 'Gene', (67, 71)) ('TMEM127', 'Gene', '55654', (82, 89)) ('SDHA', 'Gene', '6389', (41, 45)) ('RET', 'Gene', (232, 235)) ('VHL', 'Gene', '7428', (31, 34)) ('SDHC', 'Gene', (61, 65)) ('SDHB', 'Gene', (55, 59)) ('deletions', 'Var', (137, 146)) ('SDHAF2', 'Gene', '54949', (47, 53)) ('SDHAF2', 'Gene', (47, 53)) ('SDHA', 'Gene', (47, 51)) ('RET', 'Gene', '5979', (36, 39)) ('SDHA', 'Gene', '6389', (47, 51)) ('P-PGL', 'Gene', (4, 9)) ('SDHC', 'Gene', '6391', (61, 65)) ('SDHD', 'Gene', '6392', (67, 71)) ('RET', 'Gene', '5979', (232, 235)) ('TMEM127', 'Gene', (82, 89)) ('SDHB', 'Gene', '6390', (55, 59)) ('VHL', 'Gene', (31, 34)) 7001 30356369 In a recent letter to editor of New England Journal of Medicine Vaidya and colleagues report the identification of gain-of-function somatic mutations of EPAS1, which encodes for HIF-2alpha, in pheochromocytomas and paragangliomas in four of five patients who presented with cyanotic congenital heart disease. ('paragangliomas', 'Phenotype', 'HP:0002668', (215, 229)) ('congenital heart disease', 'Phenotype', 'HP:0001627', (283, 307)) ('cyanotic congenital heart disease', 'Disease', (274, 307)) ('gain-of-function', 'PosReg', (115, 131)) ('HIF-2alpha', 'Gene', '2034', (178, 188)) ('patients', 'Species', '9606', (246, 254)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (193, 209)) ('paragangliomas', 'Disease', 'MESH:D010235', (215, 229)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (193, 210)) ('paraganglioma', 'Phenotype', 'HP:0002668', (215, 228)) ('EPAS1', 'Gene', (153, 158)) ('cyanotic congenital heart disease', 'Disease', 'MESH:D006331', (274, 307)) ('EPAS1', 'Gene', '2034', (153, 158)) ('HIF-2alpha', 'Gene', (178, 188)) ('mutations', 'Var', (140, 149)) ('pheochromocytomas', 'Disease', (193, 210)) ('paragangliomas', 'Disease', (215, 229)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (193, 210)) 7002 30356369 The authors concluded that the EPAS1 mutations endow chromaffin cells exposed to chronic hypoxia amplified the ability of development of the oncogenic properties of HIF-2alpha. ('hypoxia', 'Disease', (89, 96)) ('hypoxia', 'Disease', 'MESH:D000860', (89, 96)) ('HIF-2alpha', 'Gene', '2034', (165, 175)) ('amplified', 'PosReg', (97, 106)) ('EPAS1', 'Gene', '2034', (31, 36)) ('mutations', 'Var', (37, 46)) ('EPAS1', 'Gene', (31, 36)) ('chromaffin', 'Chemical', '-', (53, 63)) ('HIF-2alpha', 'Gene', (165, 175)) 7007 30356369 Therefore, in the light of the above, the cooccurrence of CCHD (as well as in other numerous case of congenital heart defects that can cause cyanosis) and P-PGL in this patient could be explained by exposure to chronic hypoxia. ('P-PGL', 'Var', (155, 160)) ('congenital heart defects', 'Phenotype', 'HP:0001627', (101, 125)) ('congenital heart defects', 'Disease', (101, 125)) ('CCHD', 'Disease', 'None', (58, 62)) ('hypoxia', 'Disease', 'MESH:D000860', (219, 226)) ('cyanosis', 'Disease', 'MESH:D003490', (141, 149)) ('congenital heart defects', 'Disease', 'MESH:D006330', (101, 125)) ('hypoxia', 'Disease', (219, 226)) ('patient', 'Species', '9606', (169, 176)) ('cyanosis', 'Phenotype', 'HP:0000961', (141, 149)) ('heart defects', 'Phenotype', 'HP:0030680', (112, 125)) ('cyanosis', 'Disease', (141, 149)) ('CCHD', 'Disease', (58, 62)) 7011 30356369 Clinicians should consider P-PGL as a possible and potentially curable cause of otherwise unexplained clinical deterioration (in this case a slight hypertensive crisis and worsening dyspnea) in CCHD patients, even in the absence of typical paroxysmal symptoms. ('hypertensive crisis', 'Phenotype', 'HP:0100735', (148, 167)) ('hypertensive', 'Disease', 'MESH:D006973', (148, 160)) ('CCHD', 'Disease', (194, 198)) ('dyspnea', 'Phenotype', 'HP:0002094', (182, 189)) ('hypertensive', 'Disease', (148, 160)) ('CCHD', 'Disease', 'None', (194, 198)) ('dyspnea', 'Disease', (182, 189)) ('patients', 'Species', '9606', (199, 207)) ('P-PGL', 'Var', (27, 32)) ('dyspnea', 'Disease', 'MESH:D004417', (182, 189)) 7017 29783778 Aeroplysinin-1 diminished the number of proliferating cells and reduced spheroid growth significantly. ('spheroid growth', 'CPA', (72, 87)) ('rat', 'Species', '10116', (47, 50)) ('Aeroplysinin-1', 'Var', (0, 14)) ('number of proliferating cells', 'CPA', (30, 59)) ('reduced', 'NegReg', (64, 71)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (0, 14)) ('diminished', 'NegReg', (15, 25)) 7018 29783778 Beside these anti-tumorigenic activity, Aeroplysinin-1 decreased the migration ability of the cells significantly (p = 0.01), whereas, the invasion capacity was not affected. ('rat', 'Species', '10116', (72, 75)) ('tumor', 'Disease', (18, 23)) ('Aeroplysinin-1', 'Var', (40, 54)) ('decreased', 'NegReg', (55, 64)) ('migration ability of the cells', 'CPA', (69, 99)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (40, 54)) ('tumor', 'Disease', 'MESH:D009369', (18, 23)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 7019 29783778 Aeroplysinin-1 diminished the high adhesion capacity of the MTT cells to collagen (p < 0.001) and, furthermore, reduced the ability to form spheroids significantly. ('MTT', 'Chemical', 'MESH:C070243', (60, 63)) ('high adhesion', 'MPA', (30, 43)) ('Aeroplysinin-1', 'Var', (0, 14)) ('reduced', 'NegReg', (112, 119)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (0, 14)) ('diminished', 'NegReg', (15, 25)) 7036 29783778 In conclusion, Aeroplysinin-1 addresses four hallmarks of cancer; proliferation, inflammation, angiogenesis, and metastasis, but the underlying mechanism is mainly unclear. ('cancer', 'Phenotype', 'HP:0002664', (58, 64)) ('Aeroplysinin-1', 'Var', (15, 29)) ('angiogenesis', 'CPA', (95, 107)) ('proliferation', 'CPA', (66, 79)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (15, 29)) ('cancer', 'Disease', 'MESH:D009369', (58, 64)) ('inflammation', 'Disease', 'MESH:D007249', (81, 93)) ('inflammation', 'Disease', (81, 93)) ('metastasis', 'CPA', (113, 123)) ('cancer', 'Disease', (58, 64)) ('rat', 'Species', '10116', (73, 76)) 7047 29783778 Twenty-four hours of incubation under extrinsic hypoxia (1% oxygen) in the presence of Aeroplysinin-1 resulted in a slight decrease of the effect (EC50 = 12-15 microM). ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (87, 101)) ('effect', 'MPA', (139, 145)) ('oxygen', 'Chemical', 'MESH:D010100', (60, 66)) ('decrease', 'NegReg', (123, 131)) ('hypoxia', 'Disease', 'MESH:D000860', (48, 55)) ('Aeroplysinin-1', 'Var', (87, 101)) ('hypoxia', 'Disease', (48, 55)) 7052 29783778 Aeroplysinin-1 induced apoptosis, analyzed by caspase (casp)-3 and casp-7 activity assay, in a concentration-dependent manner but predominant at lower concentrations (Figure 3A-C). ('apoptosis', 'CPA', (23, 32)) ('caspase (casp)-3', 'Gene', '836', (46, 62)) ('casp-7', 'Gene', (67, 73)) ('Aeroplysinin-1', 'Var', (0, 14)) ('caspase (casp)-3', 'Gene', (46, 62)) ('rat', 'Species', '10116', (102, 105)) ('rat', 'Species', '10116', (158, 161)) ('casp-7', 'Gene', '840', (67, 73)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (0, 14)) 7053 29783778 Furthermore, gene expression analysis demonstrated a reduction of casp-3 and casp-7 after treatment with 10 microM Aeroplysinin-1 in the MTT cells (Figure 3D). ('casp-3', 'Gene', (66, 72)) ('casp-3', 'Gene', '836', (66, 72)) ('MTT', 'Chemical', 'MESH:C070243', (137, 140)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (115, 129)) ('reduction', 'NegReg', (53, 62)) ('casp-7', 'Gene', (77, 83)) ('casp-7', 'Gene', '840', (77, 83)) ('rat', 'Species', '10116', (45, 48)) ('Aeroplysinin-1', 'Var', (115, 129)) 7059 29783778 Furthermore, Becn1 as a marker of autophagy was increased after Isofistularin-3 treatment (Figure 3G). ('increased', 'PosReg', (48, 57)) ('Isofistularin-3', 'Var', (64, 79)) ('Becn1', 'Gene', (13, 18)) ('Isofistularin-3', 'Chemical', 'MESH:C000626294', (64, 79)) 7064 29783778 A single treatment with 5-10 microM Aeroplysinin-1 diminished the spheroid growth significantly over a time period of 12 days (Figure 4A). ('Aeroplysinin-1', 'Var', (36, 50)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (36, 50)) ('spheroid growth', 'CPA', (66, 81)) ('diminished', 'NegReg', (51, 61)) 7066 29783778 A single treatment with Aeroplysinin-1 resulted in a decelerated spheroid growth, but was not able to inhibit spheroid growth completely. ('decelerated', 'NegReg', (53, 64)) ('Aeroplysinin-1', 'Var', (24, 38)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (24, 38)) ('rat', 'Species', '10116', (59, 62)) 7067 29783778 Treatment with Aeroplysinin-1 took place on day four, 8, 11, and 15 after spheroid generation and resulted in a full inhibition of spheroid growth at a concentration of 10 microM (Figure 4B). ('spheroid growth', 'CPA', (131, 146)) ('Aeroplysinin-1', 'Var', (15, 29)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (15, 29)) ('inhibition', 'NegReg', (117, 127)) ('rat', 'Species', '10116', (159, 162)) ('rat', 'Species', '10116', (87, 90)) 7068 29783778 Moreover, even 5 microM Aeroplysinin-1 significantly decreased spheroid growth over the entire time period. ('decreased', 'NegReg', (53, 62)) ('spheroid growth', 'CPA', (63, 78)) ('Aeroplysinin-1', 'Var', (24, 38)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (24, 38)) 7074 29783778 Aeroplysinin-1 decreased the migration ability of the cells significantly, whereas, the invasion capacity was not affected (Figure 5A,B). ('migration ability of the cells', 'CPA', (29, 59)) ('rat', 'Species', '10116', (32, 35)) ('Aeroplysinin-1', 'Var', (0, 14)) ('decreased', 'NegReg', (15, 24)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (0, 14)) 7078 29783778 In contrast, Aeroplysinin-1 significantly diminished the high adhesion capacity of the MTT cells to collagen. ('diminished', 'NegReg', (42, 52)) ('high adhesion capacity', 'MPA', (57, 79)) ('Aeroplysinin-1', 'Var', (13, 27)) ('MTT', 'Chemical', 'MESH:C070243', (87, 90)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (13, 27)) 7082 29783778 A concentration of 1 microM Aeroplysinin-1 significantly inhibits the ability of MTT cells to form spheroids (Figure 5E). ('MTT', 'Chemical', 'MESH:C070243', (81, 84)) ('rat', 'Species', '10116', (9, 12)) ('Aeroplysinin-1', 'Var', (28, 42)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (28, 42)) ('inhibits', 'NegReg', (57, 65)) 7096 29783778 demonstrated that Aeroplysinin-1 inhibits the proliferation of colon cancer cells by promoting beta-catenin degradation. ('Aeroplysinin-1', 'Var', (18, 32)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (18, 32)) ('cancer', 'Phenotype', 'HP:0002664', (69, 75)) ('promoting', 'PosReg', (85, 94)) ('beta-catenin', 'Gene', (95, 107)) ('proliferation', 'CPA', (46, 59)) ('colon cancer', 'Disease', 'MESH:D015179', (63, 75)) ('rat', 'Species', '10116', (7, 10)) ('rat', 'Species', '10116', (53, 56)) ('colon cancer', 'Phenotype', 'HP:0003003', (63, 75)) ('inhibits', 'NegReg', (33, 41)) ('beta-catenin', 'Gene', '1499', (95, 107)) ('colon cancer', 'Disease', (63, 75)) 7097 29783778 Beta-catenin gene expression was significantly reduced after 48 h treatment with Aeroplysinin-1 (data not shown) indicating an impact of Aeroplysinin-1 on the Wnt/beta-catenin signaling. ('beta-catenin', 'Gene', (163, 175)) ('Beta-catenin', 'Gene', (0, 12)) ('Aeroplysinin-1', 'Var', (81, 95)) ('beta-catenin', 'Gene', '1499', (163, 175)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (81, 95)) ('Beta-catenin', 'Gene', '1499', (0, 12)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (137, 151)) ('reduced', 'NegReg', (47, 54)) 7105 29783778 Another sign in this direction is provided by the work from Stuhldreier et al., who demonstrate that Aeroplysinin-1 stimulates the phosphorylation of histone H2AX (gamma-H2AX), a marker for DNA damage, in acute myeloid (NOMO-1) and acute monocytic (THP-1) cells. ('acute myeloid', 'Disease', 'MESH:D015470', (205, 218)) ('THP-1', 'CellLine', 'CVCL:0006', (249, 254)) ('NOMO-1', 'Gene', '23420', (220, 226)) ('stimulates', 'PosReg', (116, 126)) ('rat', 'Species', '10116', (91, 94)) ('NOMO-1', 'Gene', (220, 226)) ('acute myeloid', 'Disease', (205, 218)) ('Aeroplysinin-1', 'Var', (101, 115)) ('histone H2AX', 'Gene', '3014', (150, 162)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (101, 115)) ('histone H2AX', 'Gene', (150, 162)) ('phosphorylation', 'MPA', (131, 146)) 7110 29783778 Anti-angiogenic activity and the previously presented data underline the potential anti-tumorigenic activity of Aeroplysinin-1 on the one hand, but indicate an impact on normal blood vessel endothelial cells on the other hand. ('impact', 'Reg', (160, 166)) ('Anti-angiogenic activity', 'CPA', (0, 24)) ('tumor', 'Disease', 'MESH:D009369', (88, 93)) ('Aeroplysinin-1', 'Var', (112, 126)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (112, 126)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('tumor', 'Disease', (88, 93)) 7113 29783778 Aeroplysinin-1 decreased the migration ability of pheochromocytoma cells significantly, whereas the invasion capacity was not affected. ('pheochromocytoma', 'Disease', (50, 66)) ('rat', 'Species', '10116', (32, 35)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (50, 66)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (50, 66)) ('Aeroplysinin-1', 'Var', (0, 14)) ('migration ability of', 'CPA', (29, 49)) ('decreased', 'NegReg', (15, 24)) ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (0, 14)) 7128 29783778 This could be important especially for PPGLs with an activation in pseudohypoxic pathways, including those with mutations in HIF2alpha, VHL, PHD and particularly SDHB that carry a higher risk of malignancy. ('PPGLs', 'Chemical', '-', (39, 44)) ('malignancy', 'Disease', (195, 205)) ('SDHB', 'Gene', (162, 166)) ('activation', 'PosReg', (53, 63)) ('VHL', 'Disease', 'MESH:D006623', (136, 139)) ('hypoxic', 'Disease', (73, 80)) ('VHL', 'Disease', (136, 139)) ('hypoxic', 'Disease', 'MESH:D000860', (73, 80)) ('mutations', 'Var', (112, 121)) ('PHD', 'Disease', 'MESH:D011547', (141, 144)) ('HIF2alpha', 'Gene', '2034', (125, 134)) ('PHD', 'Disease', (141, 144)) ('SDHB', 'Gene', '6390', (162, 166)) ('malignancy', 'Disease', 'MESH:D009369', (195, 205)) ('HIF2alpha', 'Gene', (125, 134)) 7184 29783778 Membrane was incubated with primary antibodies anti-integrin beta 1 (1:500; ab179471; abcam plc., Cambridge, UK), anti-E cadherin (1:500, ab76319; abcam plc. ('integrin beta 1', 'Gene', '3688', (52, 67)) ('1:500', 'Var', (131, 136)) ('integrin beta 1', 'Gene', (52, 67)) ('cadherin', 'Gene', '999;1000', (121, 129)) ('cadherin', 'Gene', (121, 129)) 7196 24390213 SDHB immunohistochemistry was used as a surrogate marker for the presence of succinate dehydrogenase mutations. ('succinate dehydrogenase', 'Gene', (77, 100)) ('succinate dehydrogenase', 'Gene', '6390', (77, 100)) ('mutations', 'Var', (101, 110)) ('SDHB', 'Gene', (0, 4)) 7197 24390213 The FGFR4 G388R SNP was also investigated. ('FGFR4', 'Gene', '2264', (4, 9)) ('FGFR4', 'Gene', (4, 9)) ('G388R', 'Mutation', 'rs351855', (10, 15)) ('G388R', 'Var', (10, 15)) 7206 24390213 The discovery of succinate dehydrogenase (SDH) mutations as a frequent underlying cause of paragangliomas in the year 2000 has launched a phase of accelerated gene discovery in these tumors; it is now known that a genetic predisposition is present in almost 30% of cases. ('paraganglioma', 'Phenotype', 'HP:0002668', (91, 104)) ('succinate dehydrogenase', 'Gene', '6390', (17, 40)) ('cause', 'Reg', (82, 87)) ('SDH', 'Gene', '6390', (42, 45)) ('tumors', 'Disease', 'MESH:D009369', (183, 189)) ('succinate dehydrogenase', 'Gene', (17, 40)) ('rat', 'Species', '10116', (153, 156)) ('tumor', 'Phenotype', 'HP:0002664', (183, 188)) ('mutations', 'Var', (47, 56)) ('SDH', 'Gene', (42, 45)) ('paragangliomas', 'Disease', 'MESH:D010235', (91, 105)) ('tumors', 'Phenotype', 'HP:0002664', (183, 189)) ('paragangliomas', 'Disease', (91, 105)) ('tumors', 'Disease', (183, 189)) ('paragangliomas', 'Phenotype', 'HP:0002668', (91, 105)) 7208 24390213 Numerous factors have been associated with malignancy, including the presence of SDHB mutations, high proliferative index and tumor size and location; however the only accepted criterion of malignancy is the presence of distant metastasis. ('mutations', 'Var', (86, 95)) ('associated', 'Reg', (27, 37)) ('malignancy', 'Disease', 'MESH:D009369', (190, 200)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('rat', 'Species', '10116', (109, 112)) ('tumor', 'Disease', 'MESH:D009369', (126, 131)) ('malignancy', 'Disease', 'MESH:D009369', (43, 53)) ('SDHB', 'Gene', (81, 85)) ('malignancy', 'Disease', (190, 200)) ('malignancy', 'Disease', (43, 53)) ('tumor', 'Disease', (126, 131)) 7211 24390213 RTKs and their ligands are known to be mutated or overexpressed in a variety of endocrine malignancies, including thyroid, pituitary, pancreas, pheochromocytomas and paragangliomas. ('pituitary', 'Disease', (123, 132)) ('endocrine malignancies', 'Phenotype', 'HP:0100568', (80, 102)) ('pancreas', 'Disease', (134, 142)) ('RTKs', 'Gene', (0, 4)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (144, 180)) ('mutated', 'Var', (39, 46)) ('overexpressed', 'PosReg', (50, 63)) ('thyroid', 'Disease', (114, 121)) ('pituitary', 'Disease', 'MESH:D010900', (123, 132)) ('paraganglioma', 'Phenotype', 'HP:0002668', (166, 179)) ('paragangliomas', 'Phenotype', 'HP:0002668', (166, 180)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (144, 160)) ('endocrine malignancies', 'Disease', (80, 102)) ('endocrine malignancies', 'Disease', 'MESH:D009369', (80, 102)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (144, 161)) 7212 24390213 Single nucleotide polymorphisms (SNPs) in RTK genes may also play a role in development or progression of tumors, as is the case with the common FGFR4 G388R SNP. ('RTK', 'Gene', (42, 45)) ('tumors', 'Phenotype', 'HP:0002664', (106, 112)) ('progression', 'CPA', (91, 102)) ('Single nucleotide polymorphisms', 'Var', (0, 31)) ('tumors', 'Disease', (106, 112)) ('tumors', 'Disease', 'MESH:D009369', (106, 112)) ('FGFR4', 'Gene', '2264', (145, 150)) ('FGFR4', 'Gene', (145, 150)) ('development', 'CPA', (76, 87)) ('G388R', 'Var', (151, 156)) ('play', 'Reg', (61, 65)) ('role', 'Reg', (68, 72)) ('G388R', 'Mutation', 'rs351855', (151, 156)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) 7216 24390213 SDHB immunohistochemistry was used as a surrogate maker for SDH mutations and genotyping for the common FGFR4 G388R polymorphism was performed in order to assess a possible influence of this SNP on the development and progression of these tumors. ('SDH', 'Gene', (60, 63)) ('tumors', 'Disease', (239, 245)) ('tumors', 'Disease', 'MESH:D009369', (239, 245)) ('tumors', 'Phenotype', 'HP:0002664', (239, 245)) ('FGFR4', 'Gene', '2264', (104, 109)) ('FGFR4', 'Gene', (104, 109)) ('SDH', 'Gene', (0, 3)) ('tumor', 'Phenotype', 'HP:0002664', (239, 244)) ('G388R', 'Mutation', 'rs351855', (110, 115)) ('mutations', 'Var', (64, 73)) ('SDH', 'Gene', '6390', (60, 63)) ('G388R', 'Var', (110, 115)) ('SDH', 'Gene', '6390', (0, 3)) 7230 24390213 These are referred to as SDH-related, in accordance with the fact that they can be due to either mutations or epigenetic changes in SDHA, SDHB, SDHC or SDHD, or in genes involved in mitochondrial respiratory complex II assembly or regulation. ('mutations', 'Var', (97, 106)) ('SDHD', 'Gene', '6392', (152, 156)) ('SDH', 'Gene', '6390', (152, 155)) ('SDH', 'Gene', (138, 141)) ('SDHD', 'Gene', (152, 156)) ('SDH', 'Gene', '6390', (144, 147)) ('SDH', 'Gene', (25, 28)) ('SDHC', 'Gene', '6391', (144, 148)) ('SDH', 'Gene', (152, 155)) ('epigenetic changes', 'Var', (110, 128)) ('SDH', 'Gene', (144, 147)) ('SDH', 'Gene', '6390', (132, 135)) ('SDHA', 'Gene', (132, 136)) ('due', 'Reg', (83, 86)) ('SDHA', 'Gene', '6389', (132, 136)) ('rat', 'Species', '10116', (201, 204)) ('SDHC', 'Gene', (144, 148)) ('SDH', 'Gene', '6390', (138, 141)) ('SDH', 'Gene', (132, 135)) ('SDH', 'Gene', '6390', (25, 28)) 7236 24390213 Exon 9 of fgfr4 was PCR amplified and RFLP digested with BstN1 to distinguish three FGFR4 genotypes: wild type (Gly/Gly), heterozygous Gly388 (Gly/Arg) and homozygous Arg388 (Arg/Arg) as previously described. ('Gly388', 'Chemical', '-', (135, 141)) ('Arg', 'Chemical', 'MESH:D001120', (175, 178)) ('Arg', 'Chemical', 'MESH:D001120', (179, 182)) ('Gly', 'Chemical', 'MESH:D005998', (112, 115)) ('Gly', 'Chemical', 'MESH:D005998', (116, 119)) ('FGFR4', 'Gene', '2264', (84, 89)) ('fgfr4', 'Gene', (10, 15)) ('FGFR4', 'Gene', (84, 89)) ('Gly', 'Chemical', 'MESH:D005998', (135, 138)) ('Gly', 'Chemical', 'MESH:D005998', (143, 146)) ('fgfr4', 'Gene', '2264', (10, 15)) ('Gly388 (Gly/Arg', 'Var', (135, 150)) ('Arg388', 'Chemical', '-', (167, 173)) ('Arg', 'Chemical', 'MESH:D001120', (147, 150)) ('Arg', 'Chemical', 'MESH:D001120', (167, 170)) ('Arg388 (Arg/Arg', 'Var', (167, 182)) 7260 24390213 It was also higher in tumors from patients with a positive family history of pheochromocytoma/paraganglioma (22.5 vs. 12.9, p=0.0031), patients with FGFR4 Gly/Gly genotype (17.2 vs. 11.7 in Gly/Arg patients, p=0.045) and was associated with an increased risk of metastasis (OR=1.04, 95% CI=1.01-1.09, p=0.043). ('patients', 'Species', '9606', (135, 143)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (77, 107)) ('patients', 'Species', '9606', (198, 206)) ('Arg', 'Chemical', 'MESH:D001120', (194, 197)) ('tumors', 'Phenotype', 'HP:0002664', (22, 28)) ('Gly', 'Chemical', 'MESH:D005998', (190, 193)) ('tumor', 'Phenotype', 'HP:0002664', (22, 27)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (77, 93)) ('paraganglioma', 'Phenotype', 'HP:0002668', (94, 107)) ('Gly', 'Chemical', 'MESH:D005998', (155, 158)) ('tumors', 'Disease', (22, 28)) ('higher', 'PosReg', (12, 18)) ('FGFR4', 'Gene', '2264', (149, 154)) ('patients', 'Species', '9606', (34, 42)) ('pheochromocytoma/paraganglioma', 'Disease', (77, 107)) ('tumors', 'Disease', 'MESH:D009369', (22, 28)) ('FGFR4', 'Gene', (149, 154)) ('Gly', 'Chemical', 'MESH:D005998', (159, 162)) ('Gly/Gly', 'Var', (155, 162)) ('metastasis', 'CPA', (262, 272)) 7274 24390213 No association was found between FGFR4 genotype and FGFR4 levels of expression, nor with age, gender, bilateral/multiple tumors, family history, any individual outcomes or the combined outcome. ('multiple tumors', 'Disease', (112, 127)) ('multiple tumors', 'Disease', 'MESH:D009369', (112, 127)) ('FGFR4', 'Gene', '2264', (52, 57)) ('FGFR4', 'Gene', (52, 57)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('genotype', 'Var', (39, 47)) ('tumors', 'Phenotype', 'HP:0002664', (121, 127)) ('levels of expression', 'MPA', (58, 78)) ('FGFR4', 'Gene', '2264', (33, 38)) ('FGFR4', 'Gene', (33, 38)) 7306 24390213 We identified a higher FGFR1 score in SDH-related tumors; Dekker et al also showed higher staining intensity of FGFR1 and higher bFGF RNA levels in SDHD mutated versus sporadic tumors. ('FGFR1', 'Gene', (112, 117)) ('tumors', 'Disease', 'MESH:D009369', (177, 183)) ('tumors', 'Disease', 'MESH:D009369', (50, 56)) ('FGFR1', 'Gene', (23, 28)) ('staining intensity', 'MPA', (90, 108)) ('bFGF RNA levels', 'MPA', (129, 144)) ('SDHD', 'Gene', '6392', (148, 152)) ('SDH', 'Gene', '6390', (38, 41)) ('higher', 'PosReg', (122, 128)) ('mutated', 'Var', (153, 160)) ('FGFR1', 'Gene', '2260', (112, 117)) ('SDH', 'Gene', '6390', (148, 151)) ('tumors', 'Phenotype', 'HP:0002664', (177, 183)) ('tumors', 'Phenotype', 'HP:0002664', (50, 56)) ('higher', 'PosReg', (83, 89)) ('SDHD', 'Gene', (148, 152)) ('FGFR1', 'Gene', '2260', (23, 28)) ('tumor', 'Phenotype', 'HP:0002664', (177, 182)) ('SDH', 'Gene', (38, 41)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('SDH', 'Gene', (148, 151)) ('tumors', 'Disease', (177, 183)) ('tumors', 'Disease', (50, 56)) 7313 24390213 Our finding that nuclear FGFR2 was associated with increased risk of metastasis and recurrence is not unprecedented. ('nuclear', 'Var', (17, 24)) ('metastasis', 'CPA', (69, 79)) ('FGFR2', 'Gene', (25, 30)) ('FGFR2', 'Gene', '2263', (25, 30)) 7321 24390213 FGFR3 expression was significantly lower in tumors that metastasized, with high levels of FGFR3 being associated with a decreased risk of aggressive behavior. ('decreased', 'NegReg', (120, 129)) ('tumors', 'Disease', (44, 50)) ('tumors', 'Disease', 'MESH:D009369', (44, 50)) ('tumors', 'Phenotype', 'HP:0002664', (44, 50)) ('FGFR3', 'Gene', (0, 5)) ('expression', 'MPA', (6, 16)) ('FGFR3', 'Gene', '2261', (90, 95)) ('lower', 'NegReg', (35, 40)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('aggressive behavior', 'CPA', (138, 157)) ('high levels', 'Var', (75, 86)) ('FGFR3', 'Gene', (90, 95)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (138, 157)) ('FGFR3', 'Gene', '2261', (0, 5)) 7327 24390213 Cytoplasmic relocalization has been shown to be one of the mechanisms tumor cells develop to inactivate p27. ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('tumor', 'Disease', (70, 75)) ('p27', 'Gene', '3429', (104, 107)) ('p27', 'Gene', (104, 107)) ('inactivate', 'Var', (93, 103)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) 7330 24390213 The low percentage of p53 staining is in accordance with previous studies showing a very low frequency of p53 mutations in these tumors. ('p53', 'Gene', '7157', (106, 109)) ('tumors', 'Disease', (129, 135)) ('mutations', 'Var', (110, 119)) ('tumors', 'Disease', 'MESH:D009369', (129, 135)) ('tumors', 'Phenotype', 'HP:0002664', (129, 135)) ('p53', 'Gene', (22, 25)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('p53', 'Gene', '7157', (22, 25)) ('p53', 'Gene', (106, 109)) 7332 24390213 These findings are consistent with a previous report of p16ink4a promoter hypermethylation in SDHB mutated and malignant tumors and with the observation that pheochromocytoma-prone mice with homozygous Ink4a/Arf inactivation often develop malignant tumors. ('mice', 'Species', '10090', (181, 185)) ('inactivation', 'Var', (212, 224)) ('pheochromocytoma', 'Disease', (158, 174)) ('develop', 'PosReg', (231, 238)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (158, 174)) ('Ink4a', 'Gene', '12578', (202, 207)) ('Ink4a', 'Gene', (202, 207)) ('SDHB', 'Gene', (94, 98)) ('tumors', 'Phenotype', 'HP:0002664', (121, 127)) ('tumor', 'Phenotype', 'HP:0002664', (249, 254)) ('malignant tumors', 'Disease', 'MESH:D018198', (239, 255)) ('tumors', 'Phenotype', 'HP:0002664', (249, 255)) ('p16ink4a', 'Gene', (56, 64)) ('malignant tumors', 'Disease', 'MESH:D018198', (111, 127)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('malignant tumors', 'Disease', (239, 255)) ('malignant tumors', 'Disease', (111, 127)) ('p16ink4a', 'Gene', '12578', (56, 64)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (158, 174)) 7388 27076898 Methyldopa may worsen the symptoms of pheochromocytoma and not recommended. ('worsen', 'NegReg', (15, 21)) ('Methyldopa', 'Var', (0, 10)) ('symptoms', 'MPA', (26, 34)) ('Methyldopa', 'Chemical', 'MESH:D008750', (0, 10)) ('pheochromocytoma', 'Disease', (38, 54)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (38, 54)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (38, 54)) 7405 27047799 Collectively, such groupings establish that inactivating germline changes in genes within pathways related to genomic repair can promote carcinogenesis. ('carcinogenesis', 'Disease', 'MESH:D063646', (137, 151)) ('carcinogenesis', 'Disease', (137, 151)) ('inactivating germline changes', 'Var', (44, 73)) ('promote', 'PosReg', (129, 136)) 7420 27047799 Pseudo-hypoxia may be achieved through inactivation of tumor-suppressor genes, such as the von Hippel-Lindau (VHL) tumor suppressor, E3 ubiquitin ligase gene (VHL); the genes associated with the succinate dehydrogenase (SDH) complex (the SDHx genes); and the fumarate hydratase (FH) gene. ('SDHx', 'Chemical', '-', (238, 242)) ('SDH', 'Gene', '6390', (238, 241)) ('tumor-suppressor', 'Gene', '7248', (55, 71)) ('succinate dehydrogenase', 'Gene', '6390', (195, 218)) ('VHL', 'Gene', '7428', (110, 113)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('hypoxia', 'Disease', (7, 14)) ('fumarate hydratase', 'Gene', '2271', (259, 277)) ('SDH', 'Gene', (238, 241)) ('SDH', 'Gene', '6390', (220, 223)) ('tumor-suppressor', 'Gene', (55, 71)) ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('hypoxia', 'Disease', 'MESH:D000860', (7, 14)) ('von Hippel-Lindau (VHL) tumor', 'Disease', 'MESH:D006623', (91, 120)) ('VHL', 'Gene', (159, 162)) ('succinate dehydrogenase', 'Gene', (195, 218)) ('FH', 'Gene', '2271', (279, 281)) ('SDH', 'Gene', (220, 223)) ('inactivation', 'Var', (39, 51)) ('VHL', 'Gene', (110, 113)) ('fumarate hydratase', 'Gene', (259, 277)) ('VHL', 'Gene', '7428', (159, 162)) 7422 27047799 Since these syndromes involve germline mutations associated with activation of the hypoxia pathway, and activation of this pathway may lead to aggressive and resistant sporadic tumors, this review will also compare clinical aspects of carcinogenesis, tumor growth, local/distant spread, and treatment resistance between syndrome-associated tumors and similar sporadic tumors. ('lead to', 'Reg', (135, 142)) ('sporadic tumors', 'Disease', (359, 374)) ('tumor', 'Disease', (251, 256)) ('tumor', 'Disease', (368, 373)) ('sporadic tumors', 'Disease', 'MESH:D009369', (359, 374)) ('sporadic tumors', 'Disease', (168, 183)) ('tumor', 'Disease', 'MESH:D009369', (251, 256)) ('tumor', 'Disease', 'MESH:D009369', (368, 373)) ('hypoxia', 'Disease', 'MESH:D000860', (83, 90)) ('tumors', 'Disease', 'MESH:D009369', (368, 374)) ('tumors', 'Disease', 'MESH:D009369', (177, 183)) ('tumor', 'Phenotype', 'HP:0002664', (340, 345)) ('tumors', 'Disease', (177, 183)) ('sporadic tumors', 'Disease', 'MESH:D009369', (168, 183)) ('carcinogenesis', 'Disease', (235, 249)) ('tumors', 'Phenotype', 'HP:0002664', (340, 346)) ('germline mutations', 'Var', (30, 48)) ('tumor', 'Disease', (177, 182)) ('activation', 'PosReg', (65, 75)) ('tumor', 'Phenotype', 'HP:0002664', (251, 256)) ('carcinogenesis', 'Disease', 'MESH:D063646', (235, 249)) ('tumor', 'Phenotype', 'HP:0002664', (368, 373)) ('tumors', 'Disease', (340, 346)) ('tumor', 'Disease', 'MESH:D009369', (177, 182)) ('tumors', 'Phenotype', 'HP:0002664', (368, 374)) ('tumors', 'Phenotype', 'HP:0002664', (177, 183)) ('tumor', 'Disease', (340, 345)) ('tumors', 'Disease', 'MESH:D009369', (340, 346)) ('tumor', 'Disease', 'MESH:D009369', (340, 345)) ('tumor', 'Phenotype', 'HP:0002664', (177, 182)) ('tumors', 'Disease', (368, 374)) ('hypoxia', 'Disease', (83, 90)) 7423 27047799 von Hippel-Lindau disease is an autosomal-dominant hereditary cancer syndrome involving a germline mutation in VHL. ('germline mutation', 'Var', (90, 107)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (0, 25)) ('VHL', 'Gene', (111, 114)) ('cancer', 'Phenotype', 'HP:0002664', (62, 68)) ('VHL', 'Gene', '7428', (111, 114)) ('autosomal-dominant hereditary cancer syndrome', 'Disease', (32, 77)) ('autosomal-dominant hereditary cancer syndrome', 'Disease', 'MESH:D009386', (32, 77)) ('involving', 'Reg', (78, 87)) ('von Hippel-Lindau disease', 'Disease', (0, 25)) 7427 27047799 von Hippel-Lindau disease is diagnosed in a patient who fulfills any one of the following four conditions: (1) two or more CNS hemangioblastomas; (2) one CNS hemangioblastoma and a disease-associated visceral tumor (i.e., RCC, PCC, pancreatic tumor or cysts, or broad ligament cystadenomas); (3) a family history of VHL disease and one of the following: (a) retinal angioma, (b) spinal or cerebellar hemangioblastoma, (c) PCC, (d) RCC, (e) or multiple renal and pancreatic cysts; or (4) a pathogenic VHL variant. ('hemangioblastomas', 'Disease', (127, 144)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (127, 143)) ('VHL disease', 'Disease', (316, 327)) ('hemangioblastoma', 'Disease', (400, 416)) ('pathogenic', 'Reg', (489, 499)) ('pancreatic tumor', 'Disease', (232, 248)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (400, 416)) ('VHL', 'Gene', '7428', (500, 503)) ('visceral tumor', 'Disease', 'MESH:D059265', (200, 214)) ('cystadenomas', 'Disease', (277, 289)) ('RCC', 'Disease', 'MESH:C538614', (222, 225)) ('PCC', 'Gene', (227, 230)) ('CNS hemangioblastomas', 'Phenotype', 'HP:0006880', (123, 144)) ('pancreatic tumor', 'Disease', 'MESH:D010190', (232, 248)) ('VHL', 'Gene', '7428', (316, 319)) ('CNS hemangioblastoma', 'Phenotype', 'HP:0006880', (123, 143)) ('CNS hemangioblastoma', 'Phenotype', 'HP:0006880', (154, 174)) ('retinal angioma', 'Disease', (358, 373)) ('cystadenomas', 'Disease', 'MESH:D003537', (277, 289)) ('pancreatic cysts', 'Disease', (462, 478)) ('PCC', 'Gene', (422, 425)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (158, 174)) ('PCC', 'Gene', '1421', (227, 230)) ('pancreatic cysts', 'Phenotype', 'HP:0001737', (462, 478)) ('RCC', 'Disease', (431, 434)) ('hemangioblastoma', 'Disease', (127, 143)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (127, 143)) ('hemangioblastomas', 'Disease', 'MESH:D018325', (127, 144)) ('PCC', 'Gene', '1421', (422, 425)) ('cerebellar hemangioblastoma', 'Disease', 'MESH:D018325', (389, 416)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (0, 25)) ('cerebellar hemangioblastoma', 'Disease', (389, 416)) ('RCC', 'Disease', 'MESH:C538614', (431, 434)) ('retinal angioma', 'Disease', 'MESH:D012173', (358, 373)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (400, 416)) ('hemangioblastoma', 'Disease', (158, 174)) ('von Hippel-Lindau disease', 'Disease', (0, 25)) ('multiple renal and pancreatic cysts', 'Phenotype', 'HP:0005562', (443, 478)) ('tumor', 'Phenotype', 'HP:0002664', (243, 248)) ('tumor', 'Phenotype', 'HP:0002664', (209, 214)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (158, 174)) ('patient', 'Species', '9606', (44, 51)) ('visceral tumor', 'Disease', (200, 214)) ('cerebellar hemangioblastoma', 'Phenotype', 'HP:0006880', (389, 416)) ('VHL', 'Gene', (500, 503)) ('pancreatic tumor', 'Phenotype', 'HP:0002894', (232, 248)) ('pancreatic cysts', 'Disease', 'MESH:D010181', (462, 478)) ('variant', 'Var', (504, 511)) ('VHL disease', 'Disease', 'MESH:D006623', (316, 327)) ('VHL', 'Gene', (316, 319)) ('RCC', 'Disease', (222, 225)) ('spinal or', 'Disease', (379, 388)) 7435 27047799 VHL disease requires a mutation or in-frame deletion/insertion of VHL that leads to loss of a functional protein. ('VHL disease', 'Disease', (0, 11)) ('mutation', 'Var', (23, 31)) ('VHL disease', 'Disease', 'MESH:D006623', (0, 11)) ('loss of', 'NegReg', (84, 91)) ('VHL', 'Gene', (0, 3)) ('in-frame deletion/insertion', 'Var', (35, 62)) ('VHL', 'Gene', (66, 69)) ('VHL', 'Gene', '7428', (0, 3)) ('a functional protein', 'MPA', (92, 112)) ('VHL', 'Gene', '7428', (66, 69)) 7436 27047799 Loss of functional pVHL leads to upregulation of HIF that increases expression of various proteins (e.g., vascular endothelial growth factor (VEGF), platelet-derived growth factor, matrix metalloproteinases, and transforming growth factor-alpha) involved in cancer growth and development. ('VEGF', 'Gene', (142, 146)) ('increases', 'PosReg', (58, 67)) ('vascular endothelial growth factor', 'Gene', (106, 140)) ('cancer', 'Phenotype', 'HP:0002664', (258, 264)) ('expression', 'MPA', (68, 78)) ('proteins', 'Protein', (90, 98)) ('cancer', 'Disease', (258, 264)) ('vascular endothelial growth factor', 'Gene', '7422', (106, 140)) ('upregulation', 'PosReg', (33, 45)) ('VEGF', 'Gene', '7422', (142, 146)) ('pVHL', 'Gene', '7428', (19, 23)) ('cancer', 'Disease', 'MESH:D009369', (258, 264)) ('platelet-derived growth factor, matrix metalloproteinases, and transforming growth factor-alpha', 'Gene', '7039', (149, 244)) ('pVHL', 'Gene', (19, 23)) ('Loss', 'Var', (0, 4)) 7444 27047799 Perhaps the potential higher response rate in VHL disease is not surprising, as a study of sporadic metastatic clear cell RCC indicated that patients with VHL inactivation have a higher, albeit not statistically significant different, response rate (41 versus 31%) to VEGF targeted therapy than did sporadic tumors with wild-type VHL. ('VHL disease', 'Disease', 'MESH:D006623', (46, 57)) ('VHL', 'Gene', (46, 49)) ('VEGF', 'Gene', (268, 272)) ('VHL disease', 'Disease', (46, 57)) ('tumor', 'Phenotype', 'HP:0002664', (308, 313)) ('VHL', 'Gene', (330, 333)) ('patients', 'Species', '9606', (141, 149)) ('VHL', 'Gene', (155, 158)) ('tumors', 'Phenotype', 'HP:0002664', (308, 314)) ('VHL', 'Gene', '7428', (46, 49)) ('VHL', 'Gene', '7428', (330, 333)) ('RCC', 'Disease', (122, 125)) ('VHL', 'Gene', '7428', (155, 158)) ('inactivation', 'Var', (159, 171)) ('higher', 'PosReg', (179, 185)) ('RCC', 'Disease', 'MESH:C538614', (122, 125)) ('sporadic tumors', 'Disease', (299, 314)) ('response', 'MPA', (235, 243)) ('VEGF', 'Gene', '7422', (268, 272)) ('sporadic tumors', 'Disease', 'MESH:D009369', (299, 314)) 7449 27047799 The former cluster includes mutations in genes related to SDH, known as the SDHx genes. ('SDHx', 'Chemical', '-', (76, 80)) ('SDH', 'Gene', (58, 61)) ('SDH', 'Gene', '6390', (76, 79)) ('SDH', 'Gene', (76, 79)) ('mutations', 'Var', (28, 37)) ('SDH', 'Gene', '6390', (58, 61)) 7450 27047799 The SDHx hereditary PGL/PCC syndromes are relatively newly described entities that involve a mutation in SDHA, SDHB, SDHC, SDHD, or SDHAF2. ('SDHB', 'Gene', (111, 115)) ('PCC syndrome', 'Disease', (24, 36)) ('SDHA', 'Gene', '6389', (105, 109)) ('SDHD', 'Gene', (123, 127)) ('SDHAF2', 'Gene', '54949', (132, 138)) ('SDHC', 'Gene', (117, 121)) ('SDHA', 'Gene', (132, 136)) ('SDHAF2', 'Gene', (132, 138)) ('PGL/PCC', 'Gene', (20, 27)) ('SDHD', 'Gene', '6392', (123, 127)) ('PCC syndrome', 'Disease', 'MESH:C565384', (24, 36)) ('SDHC', 'Gene', '6391', (117, 121)) ('SDHx', 'Chemical', '-', (4, 8)) ('SDHA', 'Gene', (105, 109)) ('PGL/PCC', 'Gene', '1421', (20, 27)) ('mutation', 'Var', (93, 101)) ('SDHA', 'Gene', '6389', (132, 136)) ('SDHB', 'Gene', '6390', (111, 115)) 7452 27047799 Since that time, in addition to PGL/PCC, the recognized tumor spectrum among patients with a mutation in one of the SDHx genes has been expanded to also include RCC, pituitary tumors, gastrointestinal stromal tumors, and pancreatic neuroendocrine tumors. ('tumor', 'Phenotype', 'HP:0002664', (247, 252)) ('PGL/PCC', 'Gene', (32, 39)) ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('SDHx', 'Gene', (116, 120)) ('pituitary tumors', 'Disease', 'MESH:D010911', (166, 182)) ('tumor', 'Disease', (209, 214)) ('gastrointestinal stromal tumors', 'Disease', (184, 215)) ('SDHx', 'Chemical', '-', (116, 120)) ('tumor', 'Disease', (176, 181)) ('patients', 'Species', '9606', (77, 85)) ('RCC', 'Disease', (161, 164)) ('tumor', 'Disease', 'MESH:D009369', (209, 214)) ('pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (221, 253)) ('pituitary tumors', 'Disease', (166, 182)) ('tumor', 'Disease', 'MESH:D009369', (176, 181)) ('tumors', 'Phenotype', 'HP:0002664', (209, 215)) ('tumor', 'Disease', (247, 252)) ('tumor', 'Disease', (56, 61)) ('tumors', 'Phenotype', 'HP:0002664', (176, 182)) ('pancreatic neuroendocrine tumors', 'Disease', (221, 253)) ('tumor', 'Disease', 'MESH:D009369', (247, 252)) ('RCC', 'Disease', 'MESH:C538614', (161, 164)) ('tumor', 'Phenotype', 'HP:0002664', (209, 214)) ('tumor', 'Disease', 'MESH:D009369', (56, 61)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (232, 253)) ('PGL/PCC', 'Gene', '1421', (32, 39)) ('tumor', 'Phenotype', 'HP:0002664', (176, 181)) ('tumors', 'Phenotype', 'HP:0002664', (247, 253)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (184, 215)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (184, 215)) ('mutation', 'Var', (93, 101)) 7453 27047799 A meta-analysis of prevalence studies found the pooled risk for malignant PGL to be 13 and 4% for SDHB and SDHD mutations, respectively. ('SDHD', 'Gene', (107, 111)) ('PGL', 'Disease', (74, 77)) ('SDHB', 'Gene', '6390', (98, 102)) ('mutations', 'Var', (112, 121)) ('SDHB', 'Gene', (98, 102)) ('PGL', 'Disease', 'MESH:D010235', (74, 77)) ('SDHD', 'Gene', '6392', (107, 111)) 7454 27047799 Penetrance may be affected by environmental oxygenation factors as patients with SDHD mutations who lived at lower (as opposed to higher) altitudes have less disease penetrance, have more findings of single (as opposed to multiple) tumors, and do not typically develop PCCs. ('mutations', 'Var', (86, 95)) ('PCC', 'Gene', '1421', (269, 272)) ('less', 'NegReg', (153, 157)) ('patients', 'Species', '9606', (67, 75)) ('develop', 'PosReg', (261, 268)) ('tumors', 'Disease', 'MESH:D009369', (232, 238)) ('SDHD', 'Gene', '6392', (81, 85)) ('PCC', 'Gene', (269, 272)) ('disease', 'CPA', (158, 165)) ('SDHD', 'Gene', (81, 85)) ('tumor', 'Phenotype', 'HP:0002664', (232, 237)) ('tumors', 'Phenotype', 'HP:0002664', (232, 238)) ('tumors', 'Disease', (232, 238)) ('oxygen', 'Chemical', 'MESH:D010100', (44, 50)) 7463 27047799 PCCs with SDHB knockdown, like those in familial PGL/PCC, demonstrate HIF1-alpha stabilization despite normoxic conditions, consistent with pseudo-hypoxia. ('PCC', 'Gene', '1421', (0, 3)) ('knockdown', 'Var', (15, 24)) ('PCC', 'Gene', (53, 56)) ('stabilization', 'MPA', (81, 94)) ('hypoxia', 'Disease', (147, 154)) ('PCC', 'Gene', (0, 3)) ('HIF1-alpha', 'Gene', '3091', (70, 80)) ('hypoxia', 'Disease', 'MESH:D000860', (147, 154)) ('PCC', 'Gene', '1421', (53, 56)) ('PGL/PCC', 'Gene', (49, 56)) ('SDHB', 'Gene', '6390', (10, 14)) ('SDHB', 'Gene', (10, 14)) ('PGL/PCC', 'Gene', '1421', (49, 56)) ('HIF1-alpha', 'Gene', (70, 80)) 7464 27047799 This has been recapitulated in tumor specimens where dysfunction of SDH due to mutations in SDHx genes leads to events consistent with pseudo-hypoxia, including mitochondrial dysfunction; increased expression of HIF1-alpha by immunohistochemistry; increased expression of miR-210, a key regulator of response to hypoxia; and increased VEGF expression. ('SDH', 'Gene', (92, 95)) ('SDH', 'Gene', (68, 71)) ('hypoxia', 'Disease', (312, 319)) ('increased VEGF expression', 'Phenotype', 'HP:0030269', (325, 350)) ('increased', 'PosReg', (188, 197)) ('mitochondrial dysfunction', 'Disease', 'MESH:D028361', (161, 186)) ('HIF1-alpha', 'Gene', (212, 222)) ('mutations', 'Var', (79, 88)) ('tumor', 'Phenotype', 'HP:0002664', (31, 36)) ('SDHx', 'Chemical', '-', (92, 96)) ('mitochondrial dysfunction', 'Disease', (161, 186)) ('hypoxia', 'Disease', 'MESH:D000860', (312, 319)) ('expression', 'MPA', (198, 208)) ('hypoxia', 'Disease', (142, 149)) ('miR-210', 'Gene', '406992', (272, 279)) ('increased', 'PosReg', (248, 257)) ('HIF1-alpha', 'Gene', '3091', (212, 222)) ('VEGF', 'Gene', '7422', (335, 339)) ('VEGF', 'Gene', (335, 339)) ('SDH', 'Gene', '6390', (92, 95)) ('hypoxia', 'Disease', 'MESH:D000860', (142, 149)) ('SDH', 'Gene', '6390', (68, 71)) ('miR-210', 'Gene', (272, 279)) ('expression', 'MPA', (258, 268)) ('tumor', 'Disease', (31, 36)) ('dysfunction', 'Var', (53, 64)) ('increased', 'PosReg', (325, 334)) ('mitochondrial dysfunction', 'Phenotype', 'HP:0003287', (161, 186)) ('tumor', 'Disease', 'MESH:D009369', (31, 36)) 7467 27047799 Paragangliomas associated with SDHB mutations are more aggressive and resistant to treatment than sporadic PGLs. ('Paragangliomas', 'Disease', 'MESH:D010235', (0, 14)) ('SDHB', 'Gene', (31, 35)) ('PGL', 'Disease', 'MESH:D010235', (107, 110)) ('mutations', 'Var', (36, 45)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (0, 14)) ('SDHB', 'Gene', '6390', (31, 35)) ('Paragangliomas', 'Disease', (0, 14)) ('PGL', 'Disease', (107, 110)) 7468 27047799 Malignant PGLs more frequently have SDHB mutations than do sporadic tumors. ('mutations', 'Var', (41, 50)) ('PGL', 'Disease', 'MESH:D010235', (10, 13)) ('tumors', 'Phenotype', 'HP:0002664', (68, 74)) ('SDHB', 'Gene', '6390', (36, 40)) ('SDHB', 'Gene', (36, 40)) ('sporadic tumors', 'Disease', 'MESH:D009369', (59, 74)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('PGL', 'Disease', (10, 13)) ('sporadic tumors', 'Disease', (59, 74)) 7469 27047799 In a retrospective study of 34 patients undergoing primary carotid body PGL resections, there was significantly worse disease-free survival among patients with a SDHB mutation than among patients without a SDHB mutation. ('patients', 'Species', '9606', (187, 195)) ('PGL', 'Disease', (72, 75)) ('SDHB', 'Gene', (162, 166)) ('SDHB', 'Gene', '6390', (162, 166)) ('SDHB', 'Gene', (206, 210)) ('mutation', 'Var', (167, 175)) ('PGL', 'Disease', 'MESH:D010235', (72, 75)) ('SDHB', 'Gene', '6390', (206, 210)) ('patients', 'Species', '9606', (31, 39)) ('disease-free survival', 'CPA', (118, 139)) ('patients', 'Species', '9606', (146, 154)) ('worse', 'NegReg', (112, 117)) 7470 27047799 In a cohort of patients with malignant PCC/PGL, there was an association of decreased survival for those patients with a SDHB mutation compared to others within this cohort. ('patients', 'Species', '9606', (15, 23)) ('patients', 'Species', '9606', (105, 113)) ('survival', 'MPA', (86, 94)) ('PCC', 'Gene', (39, 42)) ('SDHB', 'Gene', (121, 125)) ('PGL', 'Disease', (43, 46)) ('mutation', 'Var', (126, 134)) ('decreased', 'NegReg', (76, 85)) ('PCC', 'Gene', '1421', (39, 42)) ('PGL', 'Disease', 'MESH:D010235', (43, 46)) ('SDHB', 'Gene', '6390', (121, 125)) 7471 27047799 Clinical trials (e.g., NCT02495103) are underway to explore targeted therapies for RCC associated with SDHx gene mutations. ('RCC', 'Disease', 'MESH:C538614', (83, 86)) ('RCC', 'Disease', (83, 86)) ('associated', 'Reg', (87, 97)) ('mutations', 'Var', (113, 122)) ('SDHx', 'Gene', (103, 107)) ('SDHx', 'Chemical', '-', (103, 107)) 7475 27047799 Hereditary leiomyomatosis and renal cell cancer (HLRCC) is an autosomal-dominant hereditary cancer syndrome first associated with mutations in FH in 2002. ('cancer', 'Phenotype', 'HP:0002664', (41, 47)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (30, 47)) ('autosomal-dominant hereditary cancer syndrome', 'Disease', (62, 107)) ('Hereditary leiomyomatosis and renal cell cancer', 'Disease', 'MESH:C535516', (0, 47)) ('mutations', 'Var', (130, 139)) ('associated', 'Reg', (114, 124)) ('autosomal-dominant hereditary cancer syndrome', 'Disease', 'MESH:D009386', (62, 107)) ('cancer', 'Phenotype', 'HP:0002664', (92, 98)) ('FH', 'Gene', '2271', (143, 145)) ('RCC', 'Disease', 'MESH:C538614', (51, 54)) ('RCC', 'Disease', (51, 54)) 7480 27047799 There is variable expression in HLRCC, with one study reporting 87% of patients with FH mutations having skin leiomyomata, 96% of females having uterine leiomyomata (typically younger in age than those with sporadic tumors), and 42% having RCC - although a separate reviews put the risk of RCC between 15 and 20%. ('patients', 'Species', '9606', (71, 79)) ('mutations', 'Var', (88, 97)) ('RCC', 'Disease', (291, 294)) ('FH', 'Gene', '2271', (85, 87)) ('skin leiomyomata', 'Disease', 'MESH:C535516', (105, 121)) ('sporadic tumors', 'Disease', (207, 222)) ('RCC', 'Disease', 'MESH:C538614', (291, 294)) ('uterine leiomyomata', 'Phenotype', 'HP:0000131', (145, 164)) ('sporadic tumors', 'Disease', 'MESH:D009369', (207, 222)) ('leiomyomata', 'Disease', 'MESH:C535516', (153, 164)) ('RCC', 'Disease', (34, 37)) ('RCC', 'Disease', (240, 243)) ('leiomyomata', 'Disease', (153, 164)) ('tumor', 'Phenotype', 'HP:0002664', (216, 221)) ('RCC', 'Disease', 'MESH:C538614', (240, 243)) ('RCC', 'Disease', 'MESH:C538614', (34, 37)) ('skin leiomyomata', 'Disease', (105, 121)) ('tumors', 'Phenotype', 'HP:0002664', (216, 222)) ('skin leiomyomata', 'Phenotype', 'HP:0007620', (105, 121)) ('leiomyomata', 'Disease', 'MESH:C535516', (110, 121)) ('leiomyomata', 'Disease', (110, 121)) 7481 27047799 A rare manifestation of germline FH mutations is PCC. ('PCC', 'Gene', (49, 52)) ('FH', 'Gene', '2271', (33, 35)) ('mutations', 'Var', (36, 45)) ('PCC', 'Gene', '1421', (49, 52)) 7493 27047799 There is a lack of evidence to date regarding HLRCC-associated tumors' responsiveness to therapy although clinical trials are underway to evaluate therapeutic options for patients with HLRCC-associated RCC (e.g., NCT01130519 and NCT02495103). ('NCT01130519', 'Var', (213, 224)) ('RCC', 'Disease', 'MESH:C538614', (48, 51)) ('RCC', 'Disease', (187, 190)) ('RCC', 'Disease', 'MESH:C538614', (187, 190)) ('tumors', 'Phenotype', 'HP:0002664', (63, 69)) ('patients', 'Species', '9606', (171, 179)) ('tumors', 'Disease', (63, 69)) ('tumors', 'Disease', 'MESH:D009369', (63, 69)) ('RCC', 'Disease', 'MESH:C538614', (202, 205)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('RCC', 'Disease', (202, 205)) ('NCT02495103', 'Var', (229, 240)) ('RCC', 'Disease', (48, 51)) 7495 27047799 Both are relatively newly discovered heritable cancer syndromes that involve a germline mutation in a tumor-suppressor gene that is translated into a tricarboxylic acid cycle enzyme. ('cancer syndromes', 'Disease', (47, 63)) ('tumor-suppressor', 'Gene', '7248', (102, 118)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (150, 168)) ('germline mutation', 'Var', (79, 96)) ('tumor-suppressor', 'Gene', (102, 118)) ('cancer', 'Phenotype', 'HP:0002664', (47, 53)) ('cancer syndromes', 'Disease', 'MESH:D009369', (47, 63)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) 7573 24678933 Genetic analysis revealed a mutation of the VHL gene (exon2 TTT TGT), indicating von Hippel-Lindau syndrome. ('von Hippel-Lindau syndrome', 'Disease', (83, 109)) ('indicating', 'Reg', (72, 82)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (83, 109)) ('TGT', 'Gene', (66, 69)) ('revealed', 'Reg', (17, 25)) ('VHL', 'Gene', (44, 47)) ('VHL', 'Gene', '7428', (44, 47)) ('mutation', 'Var', (28, 36)) ('TGT', 'Gene', '81890', (66, 69)) 7584 24678933 von Hippel-Lindau syndrome is an autosomal-dominant disorder, and mutation of one copy of the VHL tumor suppressor gene is associated with the development of the tumors. ('associated', 'Reg', (123, 133)) ('tumor', 'Phenotype', 'HP:0002664', (162, 167)) ('VHL tumor', 'Disease', 'MESH:D006623', (94, 103)) ('autosomal-dominant disorder', 'Disease', 'MESH:D030342', (33, 60)) ('autosomal-dominant disorder', 'Disease', (33, 60)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('von Hippel-Lindau syndrome', 'Disease', (0, 26)) ('mutation', 'Var', (66, 74)) ('tumors', 'Disease', (162, 168)) ('tumors', 'Disease', 'MESH:D009369', (162, 168)) ('tumors', 'Phenotype', 'HP:0002664', (162, 168)) ('VHL tumor', 'Disease', (94, 103)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (0, 26)) 7585 24678933 Recently, it has been reported that de novo mutations seem to play a greater role in von Hippel-Lindau syndrome than previously thought. ('von Hippel-Lindau syndrome', 'Disease', (85, 111)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (85, 111)) ('mutations', 'Var', (44, 53)) 7615 24523932 Thus, post-translational processing of CgA gives rise to vasostatin I and II, chromofungin, chromacin, pancreastatin, catestatin, parastatin, WE-14 and EL35 peptides. ('vasostatin', 'MPA', (57, 67)) ('post-translational processing', 'Var', (6, 35)) ('catestatin', 'Gene', (118, 128)) ('parastatin', 'MPA', (130, 140)) ('WE-14', 'Chemical', '-', (142, 147)) ('CgA', 'Gene', (39, 42)) ('chromofungin', 'MPA', (78, 90)) ('pancreastatin', 'MPA', (103, 116)) ('EL35 peptides', 'MPA', (152, 165)) ('catestatin', 'Gene', '1113', (118, 128)) ('chromacin', 'MPA', (92, 101)) ('WE-14', 'MPA', (142, 147)) ('CgA', 'Gene', '1113', (39, 42)) 7626 24523932 Most of these neuroendocrine tumors occur sporadically, but the proportion of sporadic pheochromocytomas presenting genetic mutations that was initially estimated to about 24% may actually reach 30% or more. ('sporadic pheochromocytomas', 'Disease', 'MESH:D010673', (78, 104)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (87, 103)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (14, 35)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (14, 35)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('genetic mutations', 'Var', (116, 133)) ('tumors', 'Phenotype', 'HP:0002664', (29, 35)) ('neuroendocrine tumors', 'Disease', (14, 35)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (87, 104)) ('sporadic pheochromocytomas', 'Disease', (78, 104)) 7627 24523932 The latest gene mutation discoveries brought to 11 the number of genes playing an important role in the pathogenesis of pheochromocytomas. ('pheochromocytomas', 'Disease', (120, 137)) ('mutation', 'Var', (16, 24)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (120, 137)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (120, 136)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (120, 137)) 7646 24523932 Twenty-four tumors were apparently sporadic, whereas 3 tumors had a RET mutation, 2 a NF1 mutation, 3 a SDHB mutation, 4 a SDHD mutation and 1 a VHL mutation. ('RET', 'Gene', (68, 71)) ('tumors', 'Phenotype', 'HP:0002664', (55, 61)) ('NF1', 'Gene', (86, 89)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('tumors', 'Disease', (55, 61)) ('tumors', 'Phenotype', 'HP:0002664', (12, 18)) ('VHL', 'Gene', (145, 148)) ('mutation', 'Var', (90, 98)) ('SDHD', 'Gene', '6392', (123, 127)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('tumors', 'Disease', 'MESH:D009369', (55, 61)) ('SDHB', 'Gene', '6390', (104, 108)) ('RET', 'Gene', '5979', (68, 71)) ('tumors', 'Disease', (12, 18)) ('VHL', 'Gene', '7428', (145, 148)) ('mutation', 'Var', (109, 117)) ('SDHD', 'Gene', (123, 127)) ('NF1', 'Gene', '4763', (86, 89)) ('tumors', 'Disease', 'MESH:D009369', (12, 18)) ('SDHB', 'Gene', (104, 108)) 7647 24523932 Of note, the seven patients with a SDH mutation had a paraganglioma and the five malignant tumors are of adrenomedullary origin (i.e. ('tumors', 'Phenotype', 'HP:0002664', (91, 97)) ('paraganglioma', 'Disease', (54, 67)) ('SDH', 'Gene', '6390', (35, 38)) ('mutation', 'Var', (39, 47)) ('patients', 'Species', '9606', (19, 27)) ('malignant tumors', 'Disease', (81, 97)) ('paraganglioma', 'Disease', 'MESH:D010235', (54, 67)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('SDH', 'Gene', (35, 38)) ('malignant tumors', 'Disease', 'MESH:D018198', (81, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (54, 67)) 7676 24523932 The Spearman's test was performed to analyze the correlations between plasma levels of WE-14 and CgA, WE-14 and EM66 or EM66 and CgA and between tumor size and CgA, WE-14 or EM66 plasma levels. ('EM66', 'Gene', (174, 178)) ('CgA', 'Gene', (129, 132)) ('CgA', 'Gene', (97, 100)) ('CgA', 'Gene', (160, 163)) ('tumor', 'Disease', (145, 150)) ('EM66', 'Gene', '7857', (120, 124)) ('EM66', 'Gene', '7857', (112, 116)) ('tumor', 'Disease', 'MESH:D009369', (145, 150)) ('WE-14', 'Var', (102, 107)) ('EM66', 'Gene', '7857', (174, 178)) ('EM66', 'Gene', (112, 116)) ('EM66', 'Gene', (120, 124)) ('CgA', 'Gene', '1113', (129, 132)) ('WE-14', 'Chemical', '-', (87, 92)) ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('CgA', 'Gene', '1113', (97, 100)) ('WE-14', 'Chemical', '-', (102, 107)) ('WE-14', 'Chemical', '-', (165, 170)) ('CgA', 'Gene', '1113', (160, 163)) 7713 24523932 For instance, whatever the characteristic of the tumor, WE-14 measurement always increased the diagnostic sensitivity. ('tumor', 'Disease', 'MESH:D009369', (49, 54)) ('men', 'Species', '9606', (69, 72)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('WE-14', 'Chemical', '-', (56, 61)) ('tumor', 'Disease', (49, 54)) ('diagnostic sensitivity', 'MPA', (95, 117)) ('WE-14', 'Var', (56, 61)) ('increased', 'PosReg', (81, 90)) 7718 24523932 The early detection of WE-14 during ontogeny and the elevated concentrations detected in neuroendocrine neoplasms suggested that WE-14 could exert a physiological and/or pathophysiological role. ('neoplasms', 'Phenotype', 'HP:0002664', (104, 113)) ('neuroendocrine neoplasms', 'Phenotype', 'HP:0100634', (89, 113)) ('WE-14', 'Var', (129, 134)) ('neoplasm', 'Phenotype', 'HP:0002664', (104, 112)) ('WE-14', 'Chemical', '-', (23, 28)) ('WE-14', 'Chemical', '-', (129, 134)) ('neuroendocrine neoplasms', 'Disease', 'MESH:D018358', (89, 113)) ('neuroendocrine neoplasm', 'Phenotype', 'HP:0100634', (89, 112)) ('neuroendocrine neoplasms', 'Disease', (89, 113)) ('rat', 'Species', '10116', (69, 72)) 7721 24523932 Because WE-14 is present in pheochromocytes, this peptide could also be released into the circulation of patients with pheochromocytoma. ('WE-14', 'Var', (8, 13)) ('patients', 'Species', '9606', (105, 113)) ('pheochromocytoma', 'Disease', (119, 135)) ('released', 'MPA', (72, 80)) ('WE-14', 'Chemical', '-', (8, 13)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (119, 135)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (119, 135)) 7743 24523932 Worthy of note, the patient with a VHL mutation had false-negative results for all three tests. ('patient', 'Species', '9606', (20, 27)) ('VHL', 'Gene', '7428', (35, 38)) ('mutation', 'Var', (39, 47)) ('VHL', 'Gene', (35, 38)) 7744 24523932 Similarly, one patient with a RET mutation also had negative results on CgA, WE-14 and EM66 assays, while the two other patients with this gene mutation had at least one false-negative result. ('patient', 'Species', '9606', (15, 22)) ('RET', 'Gene', (30, 33)) ('EM66', 'Gene', '7857', (87, 91)) ('CgA', 'Gene', (72, 75)) ('EM66', 'Gene', (87, 91)) ('patient', 'Species', '9606', (120, 127)) ('mutation', 'Var', (34, 42)) ('RET', 'Gene', '5979', (30, 33)) ('negative', 'NegReg', (52, 60)) ('patients', 'Species', '9606', (120, 128)) ('WE-14', 'Chemical', '-', (77, 82)) ('CgA', 'Gene', '1113', (72, 75)) 7745 24523932 Further studies should be performed on a larger group of pheochromocytoma patients with a VHL or RET gene mutation to confirm these observations. ('VHL', 'Gene', '7428', (90, 93)) ('patients', 'Species', '9606', (74, 82)) ('pheochromocytoma', 'Disease', (57, 73)) ('mutation', 'Var', (106, 114)) ('RET', 'Gene', '5979', (97, 100)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (57, 73)) ('VHL', 'Gene', (90, 93)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (57, 73)) ('RET', 'Gene', (97, 100)) 7752 24523932 Interestingly, all the tumors with a SDHB or SDHD mutation in our series corresponded to paragangliomas and, in this subgroup of patients, combined measurement of CgA, WE-14 and EM66 also provided 100% sensitivity. ('paraganglioma', 'Phenotype', 'HP:0002668', (89, 102)) ('paragangliomas', 'Phenotype', 'HP:0002668', (89, 103)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('tumors', 'Phenotype', 'HP:0002664', (23, 29)) ('mutation', 'Var', (50, 58)) ('EM66', 'Gene', '7857', (178, 182)) ('SDHB', 'Gene', '6390', (37, 41)) ('SDHD', 'Gene', '6392', (45, 49)) ('CgA', 'Gene', '1113', (163, 166)) ('paragangliomas', 'Disease', (89, 103)) ('tumors', 'Disease', (23, 29)) ('EM66', 'Gene', (178, 182)) ('corresponded to', 'Reg', (73, 88)) ('patients', 'Species', '9606', (129, 137)) ('SDHB', 'Gene', (37, 41)) ('SDHD', 'Gene', (45, 49)) ('WE-14', 'Chemical', '-', (168, 173)) ('men', 'Species', '9606', (155, 158)) ('CgA', 'Gene', (163, 166)) ('tumors', 'Disease', 'MESH:D009369', (23, 29)) ('paragangliomas', 'Disease', 'MESH:D010235', (89, 103)) 7822 23525329 Mutations of the genes SDHD, PGL2, SDHC and also MEN have been identified as involved in paragangliomas. ('paragangliomas', 'Disease', (89, 103)) ('paraganglioma', 'Phenotype', 'HP:0002668', (89, 102)) ('paragangliomas', 'Phenotype', 'HP:0002668', (89, 103)) ('involved', 'Reg', (77, 85)) ('SDHD', 'Gene', '6392', (23, 27)) ('SDHD', 'Gene', (23, 27)) ('Mutations', 'Var', (0, 9)) ('SDHC', 'Gene', (35, 39)) ('MEN', 'Species', '9606', (49, 52)) ('PGL2', 'Gene', '54949', (29, 33)) ('SDHC', 'Gene', '6391', (35, 39)) ('paragangliomas', 'Disease', 'MESH:D010235', (89, 103)) ('PGL2', 'Gene', (29, 33)) 7971 19169894 As a result, seven genes were found to be part of a network including matrix metallopeptidase 14 (MMP14), v-fos FBJ murine osteosarcoma viral oncogene homolog (FOS1), Fyn-related kinase (FRK), GATA binding protein 2 (GATA2), keratin 8 (KRT8), matrix metallopeptidase 2 (MMP2), and neurotensin (NTS1). ('MMP14', 'Gene', '17387', (98, 103)) ('NTS1', 'Gene', (294, 298)) ('osteosarcoma viral', 'Disease', (123, 141)) ('neurotensin', 'Gene', (281, 292)) ('GATA binding protein 2', 'Gene', '14461', (193, 215)) ('keratin 8', 'Gene', '16691', (225, 234)) ('MMP2', 'Gene', '17390', (270, 274)) ('Fyn-related kinase', 'Gene', '14302', (167, 185)) ('murine', 'Species', '10090', (116, 122)) ('Fyn-related kinase', 'Gene', (167, 185)) ('v-fos FBJ', 'Var', (106, 115)) ('MMP2', 'Gene', (270, 274)) ('GATA2', 'Gene', '14461', (217, 222)) ('matrix metallopeptidase 2', 'Gene', '17390', (243, 268)) ('MMP14', 'Gene', (98, 103)) ('FRK', 'Gene', '14302', (187, 190)) ('KRT8', 'Gene', '16691', (236, 240)) ('GATA binding protein 2', 'Gene', (193, 215)) ('keratin 8', 'Gene', (225, 234)) ('FRK', 'Gene', (187, 190)) ('osteosarcoma', 'Phenotype', 'HP:0002669', (123, 135)) ('KRT8', 'Gene', (236, 240)) ('GATA2', 'Gene', (217, 222)) ('neurotensin', 'Gene', '67405', (281, 292)) ('matrix metallopeptidase 2', 'Gene', (243, 268)) ('osteosarcoma viral', 'Disease', 'MESH:D012516', (123, 141)) ('NTS1', 'Gene', '67405', (294, 298)) 7982 19169894 In these groups, we found that injected MTT cells resulted in liver lesions visible by MRI on day 21 compared to day 30 in mice injected with MPC cells. ('MPC', 'Chemical', '-', (142, 145)) ('liver lesions', 'Disease', 'MESH:D017093', (62, 75)) ('liver lesions', 'Disease', (62, 75)) ('MTT', 'Chemical', '-', (40, 43)) ('MTT cells', 'Var', (40, 49)) ('mice', 'Species', '10090', (123, 127)) 8058 22548972 Among the variants of RCC, clear cell RCC is the main differential diagnosis as it shares several morphologic features with hemangioblastoma. ('hemangioblastoma', 'Disease', (124, 140)) ('RCC', 'Disease', (38, 41)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (124, 140)) ('variants', 'Var', (10, 18)) ('RCC', 'Disease', (22, 25)) ('RCC', 'Phenotype', 'HP:0005584', (22, 25)) ('RCC', 'Disease', 'MESH:C538614', (22, 25)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (124, 140)) ('RCC', 'Phenotype', 'HP:0005584', (38, 41)) ('RCC', 'Disease', 'MESH:C538614', (38, 41)) 8112 22303083 Mutations in the susceptibility genes (RET, VHL, SDHD and SDHB) associated with these hereditary syndromes are found in up to 25% of patients thought to have sporadic disease. ('found', 'Reg', (111, 116)) ('RET', 'Gene', (39, 42)) ('SDHB', 'Gene', (58, 62)) ('VHL', 'Disease', 'MESH:D006623', (44, 47)) ('patients', 'Species', '9606', (133, 141)) ('Mutations', 'Var', (0, 9)) ('RET', 'Gene', '5979', (39, 42)) ('SDHD', 'Gene', '6392', (49, 53)) ('SDHB', 'Gene', '6390', (58, 62)) ('SDHD', 'Gene', (49, 53)) ('VHL', 'Disease', (44, 47)) 8113 22303083 The germline mutation in the SDHD gene identified in this patient is inherited in an autosomal dominant fashion, and it yields a 50% risk of transmission of hereditary paraganglioma to the offspring. ('SDHD', 'Gene', '6392', (29, 33)) ('hereditary paraganglioma', 'Disease', (157, 181)) ('yields', 'Reg', (120, 126)) ('SDHD', 'Gene', (29, 33)) ('patient', 'Species', '9606', (58, 65)) ('hereditary paraganglioma', 'Disease', 'MESH:D010235', (157, 181)) ('paraganglioma', 'Phenotype', 'HP:0002668', (168, 181)) ('germline mutation', 'Var', (4, 21)) ('transmission', 'Reg', (141, 153)) 8178 21188160 Genetic disorders involving mutations within the succinate dehydrogenase B and D units (SDHB, SDHD) and the von Hippel-Lindau (VHL) gene places an increased risk in the development of extra-adrenal paragangliomas and adrenal pheochromocytomas, respectively. ('Genetic disorders', 'Disease', (0, 17)) ('SDHD', 'Gene', (94, 98)) ('VHL', 'Disease', 'MESH:D006623', (127, 130)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (225, 242)) ('SDHB', 'Gene', '6390', (88, 92)) ('VHL', 'Disease', (127, 130)) ('extra-adrenal paragangliomas and adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (184, 242)) ('SDHB', 'Gene', (88, 92)) ('von Hippel-Lindau', 'Gene', (108, 125)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (217, 242)) ('paraganglioma', 'Phenotype', 'HP:0002668', (198, 211)) ('Genetic disorders', 'Disease', 'MESH:D030342', (0, 17)) ('mutations', 'Var', (28, 37)) ('SDHD', 'Gene', '6392', (94, 98)) ('paragangliomas', 'Phenotype', 'HP:0002668', (198, 212)) ('von Hippel-Lindau', 'Gene', '7428', (108, 125)) 8249 33628464 The growing deployment of genetic testing has shown that approximately 30% of pheochromocytoma and paraganglioma (PPGL) patients carry familial pathogenic germline mutations in known PPGL-susceptibility genes. ('paraganglioma', 'Phenotype', 'HP:0002668', (99, 112)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (78, 112)) ('PPGL-susceptibility', 'Gene', (183, 202)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (78, 94)) ('patients', 'Species', '9606', (120, 128)) ('mutations', 'Var', (164, 173)) 8252 33628464 Eight out of the 16 siblings (50.0%) in the second generation of the reported family pedigree were carriers of the succinate dehydrogenase B:c.574T>C mutation, reflecting the autosomal dominant inheritance risk of paraganglioma and other associated tumors. ('tumors', 'Phenotype', 'HP:0002664', (249, 255)) ('tumors', 'Disease', 'MESH:D009369', (249, 255)) ('paraganglioma', 'Disease', (214, 227)) ('B:c.574T>C', 'SUBSTITUTION', 'None', (139, 149)) ('tumor', 'Phenotype', 'HP:0002664', (249, 254)) ('B:c.574T>C', 'Var', (139, 149)) ('paraganglioma', 'Disease', 'MESH:D010235', (214, 227)) ('paraganglioma', 'Phenotype', 'HP:0002668', (214, 227)) ('tumors', 'Disease', (249, 255)) 8274 33628464 This revealed a heterozygous pathogenic succinate dehydrogenase B (SDHB) mutation:c.574T>C; p.Cys192Arg (coding reference: NM_00300.2). ('succinate dehydrogenase B', 'Gene', (40, 65)) ('succinate dehydrogenase B', 'Gene', '6390', (40, 65)) ('mutation:c.574T>C', 'SUBSTITUTION', 'None', (73, 90)) ('SDHB', 'Gene', '6390', (67, 71)) ('pathogenic', 'Reg', (29, 39)) ('mutation:c.574T>C', 'Var', (73, 90)) ('SDHB', 'Gene', (67, 71)) ('p.Cys192Arg', 'Mutation', 'rs786202732', (92, 103)) ('p.Cys192Arg', 'Var', (92, 103)) 8275 33628464 As patients with mutations in the SDHB gene have a high risk of other malignancy like papillary thyroid cancer, a neck ultrasound was performed in the patient, which was normal. ('malignancy like papillary thyroid cancer', 'Disease', 'MESH:D000077273', (70, 110)) ('cancer', 'Phenotype', 'HP:0002664', (104, 110)) ('patient', 'Species', '9606', (3, 10)) ('patient', 'Species', '9606', (151, 158)) ('patients', 'Species', '9606', (3, 11)) ('SDHB', 'Gene', '6390', (34, 38)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (86, 110)) ('SDHB', 'Gene', (34, 38)) ('malignancy like papillary thyroid cancer', 'Disease', (70, 110)) ('mutations', 'Var', (17, 26)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (96, 110)) 8293 33628464 Her four children tested negative for the SDHB:c.574T>C mutation. ('children', 'Species', '9606', (9, 17)) ('negative', 'NegReg', (25, 33)) ('SDHB:c.574T>C', 'SUBSTITUTION', 'None', (42, 55)) ('SDHB:c.574T>C', 'Var', (42, 55)) 8300 33628464 Eight out of the 16 siblings (50.0%) in the second generation of the reported family pedigree [Figure 1] were carriers of the SDHB:c.574T>C mutation, reflecting the autosomal dominant inheritance risk for paraganglioma and other associated tumors. ('paraganglioma', 'Disease', 'MESH:D010235', (205, 218)) ('tumors', 'Phenotype', 'HP:0002664', (240, 246)) ('tumors', 'Disease', (240, 246)) ('SDHB:c.574T>C', 'Var', (126, 139)) ('tumors', 'Disease', 'MESH:D009369', (240, 246)) ('tumor', 'Phenotype', 'HP:0002664', (240, 245)) ('paraganglioma', 'Phenotype', 'HP:0002668', (205, 218)) ('SDHB:c.574T>C', 'SUBSTITUTION', 'None', (126, 139)) ('paraganglioma', 'Disease', (205, 218)) 8358 33383673 Consequently, it was proposed that the blockade of PD-1/PD-L1 interaction could be a means to induce the reacquisition of antitumour activity by T cells. ('tumour', 'Phenotype', 'HP:0002664', (126, 132)) ('interaction', 'Interaction', (62, 73)) ('blockade', 'Var', (39, 47)) ('PD-1/PD-L1', 'Gene', (51, 61)) ('tumour', 'Disease', 'MESH:D009369', (126, 132)) ('tumour', 'Disease', (126, 132)) 8375 33383673 Anti-PD-1 and anti-PD-L1 monoclonal antibodies, such as avelumab, are supposed to boost up and enhance said immune response. ('anti-PD-L1', 'Var', (14, 24)) ('avelumab', 'Chemical', 'MESH:C000609138', (56, 64)) ('boost', 'PosReg', (82, 87)) ('Anti-PD-1', 'Var', (0, 9)) ('immune response', 'CPA', (108, 123)) ('enhance', 'PosReg', (95, 102)) 8408 33383673 According to the protocol, participants aged 18 years and older with histologically confirmed unresectable/metastatic adrenocortical carcinoma (ACC), or unresectable malignant PHEO/PGL, are grouped in five different cohorts and receive EO2401 in combination with nivolumab at standard dose. ('nivolumab', 'Chemical', 'MESH:D000077594', (263, 272)) ('EO2401', 'Var', (236, 242)) ('participants', 'Species', '9606', (27, 39)) ('adrenocortical carcinoma', 'Disease', 'MESH:D018268', (118, 142)) ('carcinoma', 'Phenotype', 'HP:0030731', (133, 142)) ('EO2401', 'Chemical', '-', (236, 242)) ('adrenocortical carcinoma', 'Phenotype', 'HP:0006744', (118, 142)) ('adrenocortical carcinoma', 'Disease', (118, 142)) 8409 33383673 The recommended dose of EO2401 is to be found in Cohort 1 and will be administered to the other cohorts of patients, respectively composed by previously treated ACCs, previously untreated ACCs, previously treated PHEO/PGL, and previously untreated PHEO/PGL. ('ACCs', 'Gene', (161, 165)) ('ACCs', 'Gene', '84680', (161, 165)) ('EO2401', 'Var', (24, 30)) ('EO2401', 'Chemical', '-', (24, 30)) ('ACCs', 'Gene', '84680', (188, 192)) ('patients', 'Species', '9606', (107, 115)) ('ACCs', 'Gene', (188, 192)) 8463 33383673 As a final point, we should consider that PHEO/PGL patients harboring specific mutations might benefit the most from ICIs therapy. ('benefit', 'PosReg', (95, 102)) ('patients', 'Species', '9606', (51, 59)) ('mutations', 'Var', (79, 88)) 8465 33383673 These mutations are classified in three clinically-relevant subgroups: pseudohypoxia, kinase signaling, and Wnt signaling. ('hypoxia', 'Disease', (77, 84)) ('kinase signaling', 'Disease', (86, 102)) ('Wnt signaling', 'Disease', (108, 121)) ('mutations', 'Var', (6, 15)) ('hypoxia', 'Disease', 'MESH:D000860', (77, 84)) 8466 33383673 The pseudohypoxia subgroup includes mutations in a highly significant number of genes, including succinate subunits A, B, C, D, fumarate hydratase, and von Hippel-Lindau tumour suppressor gene, encoding for proteins involved in the cell response induced by conditions of hypoxia. ('von Hippel-Lindau tumour', 'Disease', 'MESH:D006623', (152, 176)) ('tumour', 'Phenotype', 'HP:0002664', (170, 176)) ('mutations', 'Var', (36, 45)) ('hypoxia', 'Disease', 'MESH:D000860', (271, 278)) ('von Hippel-Lindau tumour', 'Disease', (152, 176)) ('hypoxia', 'Disease', 'MESH:D000860', (10, 17)) ('succinate subunits A', 'Gene', (97, 117)) ('hypoxia', 'Disease', (271, 278)) ('hypoxia', 'Disease', (10, 17)) ('fumarate hydratase', 'Gene', (128, 146)) 8467 33383673 Of note, mutations in this subgroup of genes, although acting at different metabolic levels and on different substrates, ultimately cause the stabilization of the hypoxia-inducible factor (HIF). ('stabilization', 'MPA', (142, 155)) ('mutations', 'Var', (9, 18)) ('hypoxia', 'Disease', 'MESH:D000860', (163, 170)) ('cause', 'Reg', (132, 137)) ('hypoxia', 'Disease', (163, 170)) 8469 33383673 Thus, the engagement of PD-1 signaling represents a novel pathway of T-cell suppression promoted by pseudohypoxia, and provides the rational basis for a more effective use of ICIs in the specific subgroup of PHEO/PGL patients bearing the above mentioned pseudohypoxia-related gene mutations. ('T-cell suppression', 'CPA', (69, 87)) ('hypoxia', 'Disease', 'MESH:D000860', (260, 267)) ('hypoxia', 'Disease', (260, 267)) ('hypoxia', 'Disease', (106, 113)) ('hypoxia', 'Disease', 'MESH:D000860', (106, 113)) ('mutations', 'Var', (281, 290)) ('patients', 'Species', '9606', (217, 225)) 8472 30584686 Tumor multifocality with vagus nerve involvement as a phenotypic marker of SDHD mutation in patients with head and neck paragangliomas: A 18F-FDOPA PET/CT study 18F-FDOPA PET/CT was proved to be a highly sensitive imaging method for detecting head and neck paraganglioma (HNPGL). ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (115, 133)) ('paraganglioma', 'Phenotype', 'HP:0002668', (120, 133)) ('SDHD', 'Gene', (75, 79)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (106, 133)) ('neck paragangliomas', 'Disease', (115, 134)) ('HNPGL', 'Phenotype', 'HP:0002864', (272, 277)) ('patients', 'Species', '9606', (92, 100)) ('PGL', 'Phenotype', 'HP:0002668', (274, 277)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (138, 147)) ('neck paraganglioma', 'Disease', (252, 270)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (106, 134)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (115, 134)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (161, 170)) ('mutation', 'Var', (80, 88)) ('SDHD', 'Gene', '6392', (75, 79)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (252, 270)) ('paraganglioma', 'Phenotype', 'HP:0002668', (257, 270)) ('vagus nerve involvement', 'Phenotype', 'HP:0002886', (25, 48)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (243, 270)) ('paragangliomas', 'Phenotype', 'HP:0002668', (120, 134)) 8478 30584686 The present study shows that tumor multifocality within the vagus nerve is a phenotypic marker of SDHD mutation. ('tumor', 'Disease', 'MESH:D009369', (29, 34)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('SDHD', 'Gene', '6392', (98, 102)) ('tumor', 'Disease', (29, 34)) ('SDHD', 'Gene', (98, 102)) ('mutation', 'Var', (103, 111)) ('tumor multifocality within the vagus nerve', 'Phenotype', 'HP:0002886', (29, 71)) 8482 30584686 The molecular genetics era of HNPGL began in 2000, with the description of the first succinate dehydrogenase subunit D (SDHD) gene mutation (PGL1 syndrome). ('succinate dehydrogenase subunit D', 'Gene', '6392', (85, 118)) ('SDHD', 'Gene', '6392', (120, 124)) ('PGL', 'Phenotype', 'HP:0002668', (141, 144)) ('succinate dehydrogenase subunit D', 'Gene', (85, 118)) ('SDHD', 'Gene', (120, 124)) ('HNPGL', 'Phenotype', 'HP:0002864', (30, 35)) ('PGL', 'Phenotype', 'HP:0002668', (32, 35)) ('mutation', 'Var', (131, 139)) 8483 30584686 Most of SDHD-mutation carriers that carry mutation from their father (maternal imprinting) will develop HNPGL that could possibly coexist with sympathetic pheochromocytoma and paraganglioma (PPGL). ('PPGL', 'Chemical', '-', (191, 195)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (155, 189)) ('SDHD', 'Gene', '6392', (8, 12)) ('develop', 'PosReg', (96, 103)) ('HNPGL', 'Phenotype', 'HP:0002864', (104, 109)) ('SDHD', 'Gene', (8, 12)) ('PGL', 'Phenotype', 'HP:0002668', (192, 195)) ('PGL', 'Phenotype', 'HP:0002668', (106, 109)) ('mutation', 'Var', (42, 50)) ('paraganglioma', 'Phenotype', 'HP:0002668', (176, 189)) ('HNPGL', 'Disease', (104, 109)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (155, 171)) 8484 30584686 Of all the known genetic mutations, SDHD mutations are currently the leading cause of hereditary HNPGLs, followed by SDHB and SDHC mutations. ('mutations', 'Var', (41, 50)) ('SDHB', 'Gene', (117, 121)) ('SDHC', 'Gene', (126, 130)) ('SDHD', 'Gene', (36, 40)) ('cause', 'Reg', (77, 82)) ('SDHD', 'Gene', '6392', (36, 40)) ('hereditary HNPGLs', 'Disease', 'MESH:D030342', (86, 103)) ('PGL', 'Phenotype', 'HP:0002668', (99, 102)) ('SDHC', 'Gene', '6391', (126, 130)) ('HNPGL', 'Phenotype', 'HP:0002864', (97, 102)) ('hereditary HNPGLs', 'Disease', (86, 103)) ('SDHB', 'Gene', '6390', (117, 121)) 8490 30584686 Based on our longstanding experience in 18F-FDOPA imaging and literature, false-positive findings in the head and neck region are seen in very rare situations and mainly be related to thyroid tumors of follicular origin, medullary thyroid carcinoma that can coexist with PPGL in the setting of MEN2 cases and prolactinomas that can be sporadic or related to SDHx mutations. ('SDH', 'Gene', '6390', (358, 361)) ('carcinoma', 'Phenotype', 'HP:0030731', (239, 248)) ('PPGL', 'Chemical', '-', (271, 275)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (40, 49)) ('tumors of follicular origin', 'Phenotype', 'HP:0031548', (192, 219)) ('mutations', 'Var', (363, 372)) ('prolactinomas', 'Disease', (309, 322)) ('SDH', 'Gene', (358, 361)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (231, 248)) ('thyroid tumors', 'Disease', 'MESH:D013964', (184, 198)) ('thyroid carcinoma', 'Disease', (231, 248)) ('thyroid tumors', 'Disease', (184, 198)) ('prolactinomas', 'Disease', 'MESH:D015175', (309, 322)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (231, 248)) ('tumors', 'Phenotype', 'HP:0002664', (192, 198)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (221, 248)) ('PGL', 'Phenotype', 'HP:0002668', (272, 275)) ('tumor', 'Phenotype', 'HP:0002664', (192, 197)) ('related', 'Reg', (173, 180)) 8493 30584686 Among these patients, only those who fulfilled the following criteria were included: (1) final diagnosis of PGL (2) evaluation by 18F-DOPA PET/CT, and (3) genetic testing for at least germline mutations (including large deletions) in the SDHB, SDHD, and SDHC genes. ('testing', 'Reg', (163, 170)) ('SDHB', 'Gene', '6390', (238, 242)) ('patients', 'Species', '9606', (12, 20)) ('SDHC', 'Gene', (254, 258)) ('PGL', 'Phenotype', 'HP:0002668', (108, 111)) ('SDHB', 'Gene', (238, 242)) ('SDHC', 'Gene', '6391', (254, 258)) ('SDHD', 'Gene', (244, 248)) ('18F-DOPA', 'Chemical', 'MESH:C043437', (130, 138)) ('SDHD', 'Gene', '6392', (244, 248)) ('germline mutations', 'Var', (184, 202)) 8505 30584686 Based on the clinical presentation and the Endocrine Society Clinical Practice Guideline (Lenders et al, JCEM 2014), the genetic testing of the SDHB (NM_003000.2), SDHC (NM_003001.3), and SDHD (NM_003002.3) genes was performed for all the index cases after that their informed consents were obtained. ('NM_003002.3', 'Var', (194, 205)) ('NM_003001.3', 'Var', (170, 181)) ('SDHC', 'Gene', (164, 168)) ('NM_003000.2', 'Var', (150, 161)) ('SDHD', 'Gene', '6392', (188, 192)) ('SDHC', 'Gene', '6391', (164, 168)) ('SDHD', 'Gene', (188, 192)) ('SDHB', 'Gene', '6390', (144, 148)) ('SDHB', 'Gene', (144, 148)) 8506 30584686 The SDHB/SDHC/SDHD sequence variants were classified as pathogenic/likely pathogenic/variants of uncertain significance (VUS)/likely benign/benign according the ACMG-AMP Standards and guidelines for the interpretation of sequence variants. ('variants', 'Var', (28, 36)) ('SDHB', 'Gene', (4, 8)) ('ACMG-AMP', 'Chemical', '-', (161, 169)) ('SDHD', 'Gene', '6392', (14, 18)) ('SDHB', 'Gene', '6390', (4, 8)) ('SDHC', 'Gene', (9, 13)) ('SDHD', 'Gene', (14, 18)) ('SDHC', 'Gene', '6391', (9, 13)) 8509 30584686 Logistic regression model was used to find variables that were found to be associated with SDHD mutation status. ('SDHD', 'Gene', (91, 95)) ('mutation status', 'Var', (96, 111)) ('SDHD', 'Gene', '6392', (91, 95)) 8514 30584686 Regarding the PGL associated with the vagus nerve (VP), they were diagnosed in 0% of the SDHB mutation carriers, 86.9% (n = 20) of the SDHD mutation carriers, 12.5% (n = 1) of the SDHC mutation carriers, and 23.1% (n = 15) of the sporadic cases (Table 1, Figure 1). ('SDHD', 'Gene', '6392', (135, 139)) ('SDHD', 'Gene', (135, 139)) ('mutation', 'Var', (94, 102)) ('mutation', 'Var', (140, 148)) ('SDHC', 'Gene', (180, 184)) ('SDHB', 'Gene', '6390', (89, 93)) ('PGL', 'Phenotype', 'HP:0002668', (14, 17)) ('VP', 'Chemical', '-', (51, 53)) ('SDHC', 'Gene', '6391', (180, 184)) ('SDHB', 'Gene', (89, 93)) ('VP', 'Phenotype', 'HP:0002886', (51, 53)) 8515 30584686 69.5% (n =16) of SDHD mutations carrier patients had multifocal VP, whereas there were only 0%, 12.5% (n = 1), and 3.1% (n = 2) in SDHB, SDHC, and sporadic cases, respectively (Table 2). ('SDHB', 'Gene', '6390', (131, 135)) ('SDHC', 'Gene', '6391', (137, 141)) ('VP', 'Chemical', '-', (64, 66)) ('SDHB', 'Gene', (131, 135)) ('patients', 'Species', '9606', (40, 48)) ('SDHD', 'Gene', '6392', (17, 21)) ('multifocal VP', 'Disease', (53, 66)) ('SDHD', 'Gene', (17, 21)) ('mutations', 'Var', (22, 31)) ('VP', 'Phenotype', 'HP:0002886', (64, 66)) ('SDHC', 'Gene', (137, 141)) 8517 30584686 Eleven different variants were identified in SDHD mutation carriers. ('SDHD', 'Gene', (45, 49)) ('SDHD', 'Gene', '6392', (45, 49)) ('mutation', 'Var', (50, 58)) 8518 30584686 Among them, two nucleotidic variants were over represented: c.169+5G>A and c.129G>A, both located in exon 2. ('c.129G>A', 'Var', (75, 83)) ('c.129G>A', 'Mutation', 'rs104894308', (75, 83)) ('c.169+5G>A', 'Mutation', 'c.169+5G>A', (60, 70)) ('c.169+5G>A', 'Var', (60, 70)) 8520 30584686 Focusing on the c.129G>A variant, it appears clear that this genotype is more likely to express a phenotype with a mediastinal vagus location (OR = 7.14; P = 5 X 10-21). ('c.129G>A', 'Var', (16, 24)) ('express', 'Reg', (88, 95)) ('c.129G>A', 'Mutation', 'rs104894308', (16, 24)) 8521 30584686 Indeed, among the 104 patients with HNPGL, 6 out the 7 patients with a mediastinal vagus location are patients with SDHD having a c.129G>A variant (Table 3). ('patients', 'Species', '9606', (102, 110)) ('patients', 'Species', '9606', (22, 30)) ('SDHD', 'Gene', (116, 120)) ('SDHD', 'Gene', '6392', (116, 120)) ('patients', 'Species', '9606', (55, 63)) ('PGL', 'Phenotype', 'HP:0002668', (38, 41)) ('c.129G>A', 'Mutation', 'rs104894308', (130, 138)) ('c.129G>A', 'Var', (130, 138)) ('HNPGL', 'Phenotype', 'HP:0002864', (36, 41)) 8522 30584686 The two most represented variants: c.169+5G>A (n = 6) and c.129G>A (n = 6) have previously been reported in the literature (Cascon, et al. ('c.169+5G>A', 'Mutation', 'c.169+5G>A', (35, 45)) ('c.129G>A', 'Mutation', 'rs104894308', (58, 66)) ('c.169+5G>A', 'Var', (35, 45)) ('c.129G>A', 'Var', (58, 66)) 8523 30584686 The c.169+5G>A variant has been described as potentially metastatic. ('metastatic', 'CPA', (57, 67)) ('c.169+5G>A', 'Mutation', 'c.169+5G>A', (4, 14)) ('c.169+5G>A', 'Var', (4, 14)) 8524 30584686 Indeed, in our study, one out of the 6 c.169+5G>A variants (the only one among SDHD variants) presented distant metastasis at diagnosis, (Table 1) confirming that we should consider this variant as a potentially malignant condition. ('SDHD', 'Gene', (79, 83)) ('c.169+5G>A', 'Mutation', 'c.169+5G>A', (39, 49)) ('distant metastasis', 'CPA', (104, 122)) ('SDHD', 'Gene', '6392', (79, 83)) ('c.169+5G>A', 'Var', (39, 49)) 8526 30584686 Four variants have never been reported in the literature: c.1A>G, c.446-449delinsA, c.64C>T, and c.433-438del (Table 3). ('c.64C>T', 'Var', (84, 91)) ('c.1A>G', 'Mutation', 'rs104894307', (58, 64)) ('c.433-438del', 'Var', (97, 109)) ('c.446-449del', 'DELETION', 'None', (66, 78)) ('c.446-449del', 'Var', (66, 78)) ('c.433-438del', 'Mutation', 'c.433_438del', (97, 109)) ('c.64C>T', 'Mutation', 'rs104894306', (84, 91)) 8527 30584686 Ultimately, among the three nonsense mutations coding for truncated proteins: c.129G>A (n = 6), c.325C>T (n = 3), and c.64C>T (n = 1); 100% of them were VP with multifocality (Table 3). ('VP', 'Phenotype', 'HP:0002886', (153, 155)) ('c.64C>T', 'Var', (118, 125)) ('c.325C>T', 'Var', (96, 104)) ('c.129G>A', 'Mutation', 'rs104894308', (78, 86)) ('c.129G>A', 'Var', (78, 86)) ('c.325C>T', 'Mutation', 'rs1060503770', (96, 104)) ('c.64C>T', 'Mutation', 'rs104894306', (118, 125)) ('VP', 'Chemical', '-', (153, 155)) 8541 30584686 Although subtotal surgical approaches have been developed to limit cranial nerve morbidity, surgical resection of HNPGL may lead to severe, permanent surgery-induced injuries (ie, dysphagia, chronic aspiration, vocal cord paralysis) and may compromise subsequent operations. ('cranial nerve morbidity', 'Phenotype', 'HP:0001291', (67, 90)) ('surgical resection', 'Var', (92, 110)) ('paralysis', 'Disease', (222, 231)) ('dysphagia', 'Disease', (180, 189)) ('vocal cord paralysis', 'Phenotype', 'HP:0001605', (211, 231)) ('PGL', 'Phenotype', 'HP:0002668', (116, 119)) ('paralysis', 'Phenotype', 'HP:0003470', (222, 231)) ('HNPGL', 'Phenotype', 'HP:0002864', (114, 119)) ('chronic aspiration', 'Disease', (191, 209)) ('HNPGL', 'Gene', (114, 119)) ('paralysis', 'Disease', 'MESH:D010243', (222, 231)) ('dysphagia', 'Phenotype', 'HP:0002015', (180, 189)) ('cranial nerve', 'Phenotype', 'HP:0001291', (67, 80)) ('aspiration', 'Phenotype', 'HP:0002835', (199, 209)) ('lead to', 'Reg', (124, 131)) ('dysphagia', 'Disease', 'MESH:D003680', (180, 189)) 8544 30584686 As surgical management of HNPGL can be followed by secondarily neurological injuries, the presence of contralateral PGL especially VP may compromise further surgical and radiosurgical intervention. ('neurological injuries', 'Disease', (63, 84)) ('VP', 'Phenotype', 'HP:0002886', (131, 133)) ('presence', 'Var', (90, 98)) ('HNPGL', 'Disease', (26, 31)) ('PGL', 'Phenotype', 'HP:0002668', (116, 119)) ('PGL', 'Phenotype', 'HP:0002668', (28, 31)) ('HNPGL', 'Phenotype', 'HP:0002864', (26, 31)) ('VP', 'Chemical', '-', (131, 133)) ('neurological injuries', 'Disease', 'MESH:D009422', (63, 84)) ('compromise', 'NegReg', (138, 148)) 8562 30584686 Although, HNPGL can be related to SDH mutations, they are often sporadic. ('SDH', 'Gene', (34, 37)) ('HNPGL', 'Disease', (10, 15)) ('mutations', 'Var', (38, 47)) ('PGL', 'Phenotype', 'HP:0002668', (12, 15)) ('HNPGL', 'Phenotype', 'HP:0002864', (10, 15)) ('SDH', 'Gene', '6390', (34, 37)) 8600 32178651 During admission, her vital signs showed slight elevation of blood pressure (140\90-160\110) mmHg, thus 24-h urine metanephrine and normetanephrine were requested and the results revealed normal values. ('blood pressure', 'MPA', (61, 75)) ('metanephrine', 'Chemical', 'MESH:D008676', (115, 127)) ('metanephrine', 'Chemical', 'MESH:D008676', (135, 147)) ('140\\90-160\\110', 'Var', (77, 91)) ('elevation', 'PosReg', (48, 57)) ('elevation of blood pressure', 'Phenotype', 'HP:0032263', (48, 75)) ('normetanephrine', 'Chemical', 'MESH:D009647', (132, 147)) 8610 32178651 PGLs tend to be sporadic and could be hereditary in approximately 30% of cases including germline mutations in Von Hippel-Lindau syndrome, succinate dehydrogenase subunits SDHx, RET, neurofibromatosis type 1 and multiple endocrine neoplasia (MEN2). ('RET', 'Gene', (178, 181)) ('RET', 'Gene', '5979', (178, 181)) ('multiple endocrine neoplasia', 'Disease', (212, 240)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (183, 200)) ('PGL', 'Phenotype', 'HP:0002668', (0, 3)) ('Von Hippel-Lindau syndrome', 'Disease', (111, 137)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (221, 240)) ('Von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (111, 137)) ('mutations', 'Var', (98, 107)) ('neurofibromatosis type 1', 'Gene', '4763', (183, 207)) ('neoplasia', 'Phenotype', 'HP:0002664', (231, 240)) ('PGL', 'Disease', (0, 3)) ('neurofibromatosis type 1', 'Gene', (183, 207)) ('SDHx', 'Chemical', '-', (172, 176)) ('SDHx', 'Gene', (172, 176)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (212, 240)) ('PGL', 'Disease', 'MESH:D010235', (0, 3)) 8611 32178651 There is obvious correlation between SDHB, SDHD mutations and PGLs. ('PGL', 'Disease', 'MESH:D010235', (62, 65)) ('SDHD', 'Gene', '6392', (43, 47)) ('SDHB', 'Gene', '6390', (37, 41)) ('PGL', 'Phenotype', 'HP:0002668', (62, 65)) ('SDHD', 'Gene', (43, 47)) ('PGL', 'Disease', (62, 65)) ('SDHB', 'Gene', (37, 41)) ('mutations', 'Var', (48, 57)) 8618 32178651 Physical examination showed slightly pale patient, pulse rate about (90-110) beat per minute (bpm) and blood pressure (BP) about (140\90-160\110) mmHg. ('patient', 'Species', '9606', (42, 49)) ('blood pressure', 'MPA', (103, 117)) ('140\\90-160\\110', 'Var', (130, 144)) ('pulse rate', 'MPA', (51, 61)) 8654 32178651 Biochemically silent PGL in patients with SDHB mutation is a potential other cause for normal plasma or urinary fractionated metanephrines. ('silent', 'NegReg', (14, 20)) ('urinary fractionated metanephrines', 'MPA', (104, 138)) ('PGL', 'Phenotype', 'HP:0002668', (21, 24)) ('mutation', 'Var', (47, 55)) ('SDHB', 'Gene', '6390', (42, 46)) ('PGL', 'Disease', (21, 24)) ('metanephrines', 'Chemical', 'MESH:D008676', (125, 138)) ('patients', 'Species', '9606', (28, 36)) ('PGL', 'Disease', 'MESH:D010235', (21, 24)) ('SDHB', 'Gene', (42, 46)) 8656 32178651 Consequently, such tumors with SDHB mutation can increase in size and manifest with symptoms of surrounding organ compression rather than the classic symptoms of catecholamine hypersecretion. ('tumors', 'Disease', (19, 25)) ('increase', 'PosReg', (49, 57)) ('tumors', 'Disease', 'MESH:D009369', (19, 25)) ('SDHB', 'Gene', (31, 35)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('catecholamine', 'Chemical', 'MESH:D002395', (162, 175)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('SDHB', 'Gene', '6390', (31, 35)) ('mutation', 'Var', (36, 44)) 8669 32178651 As 24-h urine metanephrine and normetanephrine were normal in our large sized PGL, SDHB mutation should be assessed. ('mutation', 'Var', (88, 96)) ('SDHB', 'Gene', (83, 87)) ('PGL', 'Phenotype', 'HP:0002668', (78, 81)) ('metanephrine', 'Chemical', 'MESH:D008676', (14, 26)) ('metanephrine', 'Chemical', 'MESH:D008676', (34, 46)) ('PGL', 'Disease', (78, 81)) ('normetanephrine', 'Chemical', 'MESH:D009647', (31, 46)) ('SDHB', 'Gene', '6390', (83, 87)) ('PGL', 'Disease', 'MESH:D010235', (78, 81)) 8679 31142060 A pseudohypoxic transcriptional signature characterizes pheochromocytomas and paragangliomas (PPGLs) of the cluster I, mainly represented by tumors with mutations in von Hippel-Lindau (VHL), endothelial PAS domain-containing protein 1 (EPAS1), or succinate dehydrogenase (SDH) subunit genes. ('SDH', 'Gene', '6390', (272, 275)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (56, 73)) ('endothelial PAS domain-containing protein 1', 'Gene', (191, 234)) ('paragangliomas', 'Phenotype', 'HP:0002668', (78, 92)) ('succinate dehydrogenase', 'Gene', (247, 270)) ('succinate dehydrogenase', 'Gene', '6390', (247, 270)) ('EPAS1', 'Gene', (236, 241)) ('mutations', 'Var', (153, 162)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (56, 72)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('tumors', 'Disease', (141, 147)) ('tumors', 'Disease', 'MESH:D009369', (141, 147)) ('PPGLs', 'Chemical', '-', (94, 99)) ('tumors', 'Phenotype', 'HP:0002664', (141, 147)) ('SDH', 'Gene', (272, 275)) ('endothelial PAS domain-containing protein 1', 'Gene', '2034', (191, 234)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (56, 92)) ('pseudohypoxic transcriptional signature', 'MPA', (2, 41)) 8680 31142060 The aim of this study was to investigate a possible association between underlying tumor driver mutations and COX-2 in PPGLs. ('PPGLs', 'Disease', (119, 124)) ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('COX-2', 'Gene', (110, 115)) ('tumor', 'Disease', (83, 88)) ('PPGLs', 'Chemical', '-', (119, 124)) ('tumor', 'Disease', 'MESH:D009369', (83, 88)) ('mutations', 'Var', (96, 105)) 8681 31142060 COX-2 gene expression and immunoreactivity were examined in clinical specimens with documented mutations, as well as in spheroids and allografts derived from mouse pheochromocytoma (MPC) cells. ('pheochromocytoma', 'Disease', 'MESH:D010673', (164, 180)) ('mouse', 'Species', '10090', (158, 163)) ('clinical', 'Species', '191496', (60, 68)) ('pheochromocytoma', 'Disease', (164, 180)) ('mutations', 'Var', (95, 104)) ('COX-2', 'Gene', (0, 5)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (164, 180)) 8687 31142060 Over the past few decades, advances in genetic testing have substantially facilitated the identification of germline and somatic mutations in tumor susceptibility genes in about 60% of adrenal pheochromocytomas and their extra adrenal counterparts, paragangliomas (summarized as PPGLs). ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (193, 209)) ('tumor', 'Disease', (142, 147)) ('mutations', 'Var', (129, 138)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (193, 210)) ('paragangliomas', 'Disease', (249, 263)) ('paragangliomas', 'Disease', 'MESH:D010235', (249, 263)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (185, 210)) ('PPGLs', 'Chemical', '-', (279, 284)) ('adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (185, 210)) ('paragangliomas', 'Phenotype', 'HP:0002668', (249, 263)) ('tumor', 'Disease', 'MESH:D009369', (142, 147)) ('adrenal pheochromocytomas', 'Disease', (185, 210)) 8688 31142060 Gain-of-function mutations in proto-oncogenes such as rearranged during transfection (RET; germline or somatic), endothelial per-arnt-sim domain-containing protein 1 (EPAS1; somatic), and Harvey rat sarcoma viral oncogene homolog (HRAS; somatic); and loss-of-function mutations in tumor suppressor genes such as von Hippel-Lindau (VHL; germline or somatic), neurofibromin 1 (NF1; germline or somatic), transmembrane protein 127 (TMEM127; germline), and myc-associated factor X (MAX, germline or somatic), as well as mutations in all four succinate dehydrogenase subunits (SDHD, SDHC, SDHB, and SDHA; germline) and SDH assembly factor 2 (SDHAF2; germline) have been implicated in the tumorigenesis of PPGLs. ('PPGLs', 'Chemical', '-', (700, 705)) ('Gain-of-function', 'PosReg', (0, 16)) ('MAX', 'Gene', '60661', (478, 481)) ('SDHC', 'Gene', (578, 582)) ('mutations', 'Var', (17, 26)) ('tumor', 'Disease', (281, 286)) ('sarcoma', 'Phenotype', 'HP:0100242', (199, 206)) ('mutations', 'Var', (516, 525)) ('MAX', 'Gene', (478, 481)) ('SDHD', 'Gene', (572, 576)) ('tumor', 'Disease', 'MESH:D009369', (281, 286)) ('SDHA', 'Gene', (594, 598)) ('mutations', 'Var', (268, 277)) ('tumor', 'Disease', (683, 688)) ('SDH assembly factor 2', 'Gene', '361726', (614, 635)) ('transmembrane protein 127', 'Gene', (402, 427)) ('myc-associated factor X', 'Gene', '60661', (453, 476)) ('tumor', 'Phenotype', 'HP:0002664', (281, 286)) ('rat', 'Species', '10116', (195, 198)) ('tumor', 'Disease', 'MESH:D009369', (683, 688)) ('transmembrane protein 127', 'Gene', '311405', (402, 427)) ('myc-associated factor X', 'Gene', (453, 476)) ('SDHB', 'Gene', (584, 588)) ('succinate dehydrogenase subunits', 'Gene', (538, 570)) ('PPGLs', 'Disease', (700, 705)) ('neurofibromin 1', 'Gene', '24592', (358, 373)) ('loss-of-function', 'NegReg', (251, 267)) ('implicated', 'Reg', (665, 675)) ('neurofibromin 1', 'Gene', (358, 373)) ('SDH assembly factor 2', 'Gene', (614, 635)) ('succinate dehydrogenase subunits', 'Gene', '363061', (538, 570)) ('sarcoma', 'Disease', 'MESH:D012509', (199, 206)) ('tumor', 'Phenotype', 'HP:0002664', (683, 688)) ('sarcoma', 'Disease', (199, 206)) 8690 31142060 Gene expression profiling provided the basis for classifying PPGLs according to their main transcriptional signatures underlying the aforementioned mutations: cluster I presents with activation of pseudohypoxic signaling pathways and includes mainly VHL-, EPAS1-, and SDHx-mutant cases; cluster II is enriched in kinase receptor signaling pathways and is comprised of RET-, NF1-, TMEM127-, MAX-, and HRAS-mutant cases. ('pseudohypoxic signaling pathways', 'Pathway', (197, 229)) ('MAX', 'Gene', '60661', (390, 393)) ('mutations', 'Var', (148, 157)) ('activation', 'PosReg', (183, 193)) ('PPGLs', 'Chemical', '-', (61, 66)) ('SDHx-mutant', 'Gene', (268, 279)) ('SDHx-mutant', 'Var', (268, 279)) ('MAX', 'Gene', (390, 393)) ('SDHx', 'Chemical', '-', (268, 272)) ('VHL-', 'Gene', (250, 254)) 8697 31142060 Endoradiotherapy, e.g., with [177Lu]Lu-DOTA-(Tyr3)octreotate (177Lu-DOTA-TATE) is currently investigated as a treatment option for inoperable or metastatic PPGLs, showing promising effects, but sometimes incomplete tumor remission in clinics as well as in preclinical PPGL models. ('[177Lu]Lu-DOTA-(Tyr3)octreotate', 'Chemical', '-', (29, 60)) ('177Lu-DOTA-TATE', 'Chemical', 'MESH:C447941', (62, 77)) ('PPGLs', 'Chemical', '-', (156, 161)) ('tumor', 'Disease', 'MESH:D009369', (215, 220)) ('clinical', 'Species', '191496', (259, 267)) ('tumor', 'Phenotype', 'HP:0002664', (215, 220)) ('PPGLs', 'Disease', (156, 161)) ('tumor', 'Disease', (215, 220)) ('[177Lu]Lu-DOTA-', 'Var', (29, 44)) 8704 31142060 Furthermore, we characterized COX-2 immunoreactivity in tumor spheroids and allografts derived from mouse pheochromocytoma (MPC) cells with a heterozygous Nf1 knockout in order to assess the usefulness of these models for preclinical testing of COX-2-targeting adjuvant and, in particular, radiosensitizing treatments. ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('mouse', 'Species', '10090', (100, 105)) ('Nf1', 'Gene', (155, 158)) ('tumor', 'Disease', (56, 61)) ('clinical', 'Species', '191496', (225, 233)) ('pheochromocytoma', 'Disease', (106, 122)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (106, 122)) ('Nf1', 'Gene', '18015', (155, 158)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (106, 122)) ('knockout', 'Var', (159, 167)) ('tumor', 'Disease', 'MESH:D009369', (56, 61)) 8705 31142060 COX-2 gene expression data were extracted from gene expression arrays of 70 PPGL samples with documented mutations in tumor susceptibility genes (Table 1). ('mutations', 'Var', (105, 114)) ('tumor', 'Disease', (118, 123)) ('tumor', 'Disease', 'MESH:D009369', (118, 123)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) 8707 31142060 Most of the tumors carried mutations in SDHx (23% comprising 5 SDHD, 2 SDHC, and 9 SDHB, cases) and RET (23%) followed by VHL (21%), EPAS1 (16%), HRAS (11%), and NF1 (5.7%). ('mutations', 'Var', (27, 36)) ('SDHx', 'Chemical', '-', (40, 44)) ('SDHx', 'Gene', (40, 44)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('tumors', 'Disease', (12, 18)) ('tumors', 'Phenotype', 'HP:0002664', (12, 18)) ('tumors', 'Disease', 'MESH:D009369', (12, 18)) 8715 31142060 PPGLs carrying a VHL mutation showed the highest COX-2 expression (0.30 +- 0.28), followed by cases with SDHx (-0.13 +- 0.22), EPAS1 (-0.25 +- 0.13), HRAS (-0.55 +- 0.12), RET (-0.68 +- 0.14), and NF1 (-0.96 +- 0.16) mutations (Figure 1). ('SDHx', 'Chemical', '-', (105, 109)) ('PPGLs', 'Chemical', '-', (0, 5)) ('mutation', 'Var', (21, 29)) ('expression', 'MPA', (55, 65)) ('COX-2', 'Enzyme', (49, 54)) ('VHL', 'Gene', (17, 20)) 8721 31142060 This series included 96 PPGLs with a clinically documented mutation in tumor susceptibility genes (Table 2) and reflects the expected age, location, and metastatic disease, according to the mutations involved. ('tumor', 'Disease', 'MESH:D009369', (71, 76)) ('PPGLs', 'Chemical', '-', (24, 29)) ('clinical', 'Species', '191496', (37, 45)) ('mutation', 'Var', (59, 67)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('tumor', 'Disease', (71, 76)) 8723 31142060 Most of the cases carried a mutation in SDHx (41% comprising 18 SDHD, 3 SDHC, 9 SDHB, 5 SDHA, and 4 SDHAF2 cases) followed by NF1 (22%), VHL (15%), RET (9.4%), EPAS1 (7.3%), and HRAS (6.3%). ('SDHx', 'Chemical', '-', (40, 44)) ('mutation', 'Var', (28, 36)) ('SDHx', 'Gene', (40, 44)) 8725 31142060 Tumor diameters were significantly smaller in the SDHx subgroup (3.9 cm) and significantly higher in the RET subgroup (7.2 cm) compared to cases with other genetic backgrounds. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('higher', 'PosReg', (91, 97)) ('smaller', 'NegReg', (35, 42)) ('SDHx', 'Var', (50, 54)) ('Tumor diameters', 'CPA', (0, 15)) ('SDHx', 'Chemical', '-', (50, 54)) 8735 31142060 In tissue samples with different genetic backgrounds, a trend was observed with highest COX-2 immunoreactivity in PPGLs due to VHL mutations (36% strong, 43% moderate), followed by NF1 (33% strong, 43% moderate), SDHx (23% strong, 41% moderate), HRAS (17% strong, 33% moderate), EPAS1 (14% strong, 29% moderate), and RET (all samples negative or weak) (Figure 3). ('mutations', 'Var', (131, 140)) ('highest', 'PosReg', (80, 87)) ('rat', 'Species', '10116', (162, 165)) ('PPGLs', 'Chemical', '-', (114, 119)) ('immunoreactivity', 'MPA', (94, 110)) ('rat', 'Species', '10116', (306, 309)) ('rat', 'Species', '10116', (239, 242)) ('VHL', 'Gene', (127, 130)) ('SDHx', 'Chemical', '-', (213, 217)) ('COX-2', 'Enzyme', (88, 93)) ('rat', 'Species', '10116', (206, 209)) ('rat', 'Species', '10116', (272, 275)) 8737 31142060 However, due to higher numbers of SDHD-mutant cases compared to the other subtypes, multiple regression analyses (Table S2) taking also into account the sex of the patients showed a significant positive relationship between SDHD mutation and COX-2 immunoreactivity (r = 0.867, p <= 0.001). ('mutation', 'Var', (229, 237)) ('positive', 'PosReg', (194, 202)) ('immunoreactivity', 'MPA', (248, 264)) ('SDHD-mutant', 'Gene', (34, 45)) ('SDHD', 'Gene', (224, 228)) ('COX-2', 'Enzyme', (242, 247)) ('patients', 'Species', '9606', (164, 172)) 8741 31142060 Tumors with mutations in SDHx showed the highest proportion of COX-2 immunoreactivity with stromal cells involved (72%, pattern B+C), followed by VHL (45%, pattern B only), NF1 (38%, pattern B+C), HRAS (33%, pattern B only), and EPAS1 (0%). ('immunoreactivity', 'MPA', (69, 85)) ('COX-2', 'Enzyme', (63, 68)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('mutations', 'Var', (12, 21)) ('SDHx', 'Gene', (25, 29)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('SDHx', 'Chemical', '-', (25, 29)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) 8742 31142060 Pearson correlation showed a significant positive relationship between SDHx mutations and COX-2 immunoreactivity with stromal cells involved (r = 0.266, p = 0.009). ('mutations', 'Var', (76, 85)) ('COX-2', 'Gene', (90, 95)) ('SDHx', 'Chemical', '-', (71, 75)) ('SDHx', 'Gene', (71, 75)) ('positive', 'PosReg', (41, 49)) ('immunoreactivity', 'MPA', (96, 112)) 8743 31142060 We further assessed the COX-2 status of a commonly used preclinical model of mouse pheochromocytoma (MPC) cells with heterozygous Nf1 knockout. ('Nf1', 'Gene', (130, 133)) ('knockout', 'Var', (134, 142)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (83, 99)) ('Nf1', 'Gene', '18015', (130, 133)) ('pheochromocytoma', 'Disease', (83, 99)) ('mouse', 'Species', '10090', (77, 82)) ('clinical', 'Species', '191496', (59, 67)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (83, 99)) 8746 31142060 Endoradiotherapy, e.g., with 177Lu-DOTA-TATE is currently investigated as a treatment option for inoperable or metastatic PPGLs, showing promising effects, but sometimes incomplete tumor remission in clinics as well as in preclinical models. ('tumor', 'Disease', (181, 186)) ('PPGLs', 'Chemical', '-', (122, 127)) ('clinical', 'Species', '191496', (225, 233)) ('177Lu-DOTA-TATE', 'Var', (29, 44)) ('177Lu-DOTA-TATE', 'Chemical', 'MESH:C447941', (29, 44)) ('tumor', 'Disease', 'MESH:D009369', (181, 186)) ('PPGLs', 'Disease', (122, 127)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) 8747 31142060 Inhibition of COX-2 is considered a viable radiosensitization strategy. ('rat', 'Species', '10116', (64, 67)) ('Inhibition', 'Var', (0, 10)) ('COX-2', 'Gene', (14, 19)) 8749 31142060 Expression of COX-2 was assessed on mRNA or protein level in two separate cohorts of PPGL patients with known tumor driver mutations. ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('tumor', 'Disease', (110, 115)) ('PPGL', 'Gene', (85, 89)) ('rat', 'Species', '10116', (69, 72)) ('mutations', 'Var', (123, 132)) ('patients', 'Species', '9606', (90, 98)) ('tumor', 'Disease', 'MESH:D009369', (110, 115)) 8755 31142060 Amongst others, intratumoral differences in normoxic/hypoxic conditions, systemic chemotherapy, oxidative stress, or even tobacco smoking can interfere with COX-2 levels on gene expression and protein level, possibly masking a potential association with the pseudohypoxic signature of cluster I PPGLs. ('hypoxic conditions', 'Disease', 'MESH:D009135', (53, 71)) ('tumor', 'Disease', (21, 26)) ('tobacco', 'Species', '4097', (122, 129)) ('oxidative stress', 'Phenotype', 'HP:0025464', (96, 112)) ('hypoxic conditions', 'Disease', (53, 71)) ('PPGLs', 'Chemical', '-', (295, 300)) ('rat', 'Species', '10116', (19, 22)) ('COX-2 levels', 'MPA', (157, 169)) ('differences', 'Var', (29, 40)) ('tumor', 'Disease', 'MESH:D009369', (21, 26)) ('interfere', 'NegReg', (142, 151)) ('tumor', 'Phenotype', 'HP:0002664', (21, 26)) 8756 31142060 In cluster I PPGLs with loss-of-function mutations in VHL and SDHx, pseudohypoxic transcriptional phenotypes may contribute to COX-2 induction on gene expression and protein level. ('mutations', 'Var', (41, 50)) ('VHL', 'Gene', (54, 57)) ('loss-of-function', 'NegReg', (24, 40)) ('induction', 'MPA', (133, 142)) ('PPGLs', 'Chemical', '-', (13, 18)) ('SDHx', 'Gene', (62, 66)) ('pseudohypoxic transcriptional phenotypes', 'MPA', (68, 108)) ('SDHx', 'Chemical', '-', (62, 66)) ('COX-2', 'Gene', (127, 132)) 8757 31142060 Functional defects of VHL, an E3 ubiquitin ligase, directly impair ubiquitin labeling of hypoxia-inducible factors (HIF-alpha) for regular proteasomal degradation. ('impair', 'NegReg', (60, 66)) ('defects', 'Var', (11, 18)) ('VHL', 'Gene', (22, 25)) ('hypoxia', 'Disease', (89, 96)) ('hypoxia', 'Disease', 'MESH:D000860', (89, 96)) ('ubiquitin labeling of', 'MPA', (67, 88)) ('regular proteasomal degradation', 'MPA', (131, 162)) 8758 31142060 Functional defects of SDH indirectly impair ubiquitin-labeling of HIF-alpha caused by intracellular accumulation of succinate, an intrinsic inhibitor of prolyl hydroxylases. ('defects', 'Var', (11, 18)) ('ubiquitin-labeling', 'MPA', (44, 62)) ('intracellular accumulation of succinate', 'MPA', (86, 125)) ('SDH', 'Gene', '6390', (22, 25)) ('HIF-alpha', 'Protein', (66, 75)) ('succinate', 'Chemical', 'MESH:D019802', (116, 125)) ('impair', 'NegReg', (37, 43)) ('SDH', 'Gene', (22, 25)) 8759 31142060 Therefore, both VHL and SDH defects are associated with enhanced HIF-alpha signaling even under normoxic conditions, a metabolic state referred to as pseudohypoxia. ('defects', 'Var', (28, 35)) ('SDH', 'Gene', '6390', (24, 27)) ('VHL', 'Gene', (16, 19)) ('pseudohypoxia', 'Disease', (150, 163)) ('enhanced', 'PosReg', (56, 64)) ('SDH', 'Gene', (24, 27)) ('HIF-alpha signaling', 'MPA', (65, 84)) ('pseudohypoxia', 'Disease', 'None', (150, 163)) 8761 31142060 COX-2 mRNA levels as well as the percentage of moderate and high COX-2 immunoreactivity tended to be lower among cases carrying a gain-of function mutation in EPAS1, encoding the HIF-2alpha protein, compared to VHL- and SDHx-mutant cases. ('gain-of function', 'PosReg', (130, 146)) ('HIF-2alpha', 'Gene', '2034', (179, 189)) ('COX-2 mRNA levels', 'MPA', (0, 17)) ('mutation', 'Var', (147, 155)) ('lower', 'NegReg', (101, 106)) ('SDHx', 'Chemical', '-', (220, 224)) ('EPAS1', 'Gene', (159, 164)) ('HIF-2alpha', 'Gene', (179, 189)) ('rat', 'Species', '10116', (51, 54)) 8763 31142060 In cluster II PPGLs with loss-of-function mutations in NF1 gene, the trend for a relatively high COX-2 immunoreactivity is consistent with another report on elevated COX-2 and prostaglandin E2 (PGE2) levels in NF1 malignant peripheral nerve sheath tumors. ('sheath tumors', 'Disease', (241, 254)) ('high', 'PosReg', (92, 96)) ('COX-2 immunoreactivity', 'MPA', (97, 119)) ('loss-of-function', 'NegReg', (25, 41)) ('malignant peripheral nerve sheath tumors', 'Phenotype', 'HP:0100697', (214, 254)) ('tumors', 'Phenotype', 'HP:0002664', (248, 254)) ('elevated', 'PosReg', (157, 165)) ('prostaglandin E2', 'Chemical', 'MESH:D015232', (176, 192)) ('PPGLs', 'Chemical', '-', (14, 19)) ('tumor', 'Phenotype', 'HP:0002664', (248, 253)) ('sheath tumors', 'Disease', 'MESH:D010524', (241, 254)) ('NF1', 'Gene', (55, 58)) ('mutations', 'Var', (42, 51)) ('PGE2', 'Chemical', 'MESH:D015232', (194, 198)) 8766 31142060 The lack of high COX-2 mRNA in the gene expression cohort might be due to the low number of NF1-mutant cases in this particular set of tumors. ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('NF1-mutant', 'Gene', (92, 102)) ('NF1-mutant', 'Var', (92, 102)) ('tumors', 'Disease', (135, 141)) ('tumors', 'Disease', 'MESH:D009369', (135, 141)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) 8767 31142060 Whether there is a relationship between germ line or somatic NF1 mutations and different COX-2 levels in PPGLs remains to be investigated. ('PPGLs', 'Chemical', '-', (105, 110)) ('COX-2 levels', 'MPA', (89, 101)) ('mutations', 'Var', (65, 74)) ('NF1', 'Gene', (61, 64)) 8768 31142060 In accordance with the observations in clinical PPGL samples, COX-2 immunoreactivity was also high in spheroids and subcutaneous allografts derived from mouse pheochromocytoma (MPC) cells with a heterozygous Nf1 knockout. ('COX-2', 'Gene', (62, 67)) ('high', 'PosReg', (94, 98)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (159, 175)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (159, 175)) ('Nf1', 'Gene', '18015', (208, 211)) ('knockout', 'Var', (212, 220)) ('clinical', 'Species', '191496', (39, 47)) ('immunoreactivity', 'MPA', (68, 84)) ('mouse', 'Species', '10090', (153, 158)) ('Nf1', 'Gene', (208, 211)) ('pheochromocytoma', 'Disease', (159, 175)) 8770 31142060 Since we did not find a significant relationship between tumor driver mutations and COX-2 in clinical PPGL samples, molecular imaging could be applied in a personalized approach to pre-estimate whether a tumor is susceptible to COX-2-targeted treatment. ('mutations', 'Var', (70, 79)) ('tumor', 'Disease', 'MESH:D009369', (204, 209)) ('clinical', 'Species', '191496', (93, 101)) ('tumor', 'Phenotype', 'HP:0002664', (204, 209)) ('tumor', 'Disease', 'MESH:D009369', (57, 62)) ('tumor', 'Disease', (204, 209)) ('tumor', 'Phenotype', 'HP:0002664', (57, 62)) ('tumor', 'Disease', (57, 62)) 8773 31142060 In the case of HRAS and RET mutations, trends for lower COX-2 mRNA levels in PPGLs are in agreement with COX-2 immunoreactivity. ('lower', 'NegReg', (50, 55)) ('mutations', 'Var', (28, 37)) ('PPGLs', 'Chemical', '-', (77, 82)) ('COX-2 mRNA levels', 'MPA', (56, 73)) 8778 31142060 Significantly higher COX-2 mRNA levels in head and neck PPGLs compared to other tumor locations is related to the fact that all head and neck PPGLs in this series carried an SDHD mutation. ('tumor', 'Disease', 'MESH:D009369', (80, 85)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('COX-2 mRNA levels', 'MPA', (21, 38)) ('mutation', 'Var', (179, 187)) ('tumor', 'Disease', (80, 85)) ('SDHD', 'Gene', (174, 178)) ('PPGLs', 'Chemical', '-', (56, 61)) ('PPGLs', 'Chemical', '-', (142, 147)) ('higher', 'PosReg', (14, 20)) 8781 31142060 In our tissue series, head and neck PPGLs comprised of cases with different tumor driver mutations explaining why similar effects on COX-2 were not detected in this series. ('PPGLs', 'Chemical', '-', (36, 41)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('tumor', 'Disease', (76, 81)) ('mutations', 'Var', (89, 98)) ('tumor', 'Disease', 'MESH:D009369', (76, 81)) 8787 31142060 A very strong relationship between both tumor COX-2 expression and tumor-to-stromal COX-2 ratio has been shown to be highly correlated with response to chemotherapy while, high COX-2 expression in the stroma was significantly associated with better survival, but failed to directly correlate with response to treatment. ('tumor', 'Disease', 'MESH:D009369', (67, 72)) ('tumor', 'Disease', 'MESH:D009369', (40, 45)) ('COX-2', 'Gene', (177, 182)) ('tumor', 'Phenotype', 'HP:0002664', (67, 72)) ('expression', 'MPA', (183, 193)) ('high', 'Var', (172, 176)) ('tumor', 'Disease', (67, 72)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('tumor', 'Disease', (40, 45)) ('better', 'PosReg', (242, 248)) ('rat', 'Species', '10116', (90, 93)) 8830 31368675 Among these, mutations in the subunits of succinate dehydrogenase complex (SDH) are the most common, causing around half of familial PPGL cases. ('succinate dehydrogenase', 'Gene', (42, 65)) ('common', 'Reg', (93, 99)) ('succinate dehydrogenase', 'Gene', '6390', (42, 65)) ('SDH', 'Gene', '6390', (75, 78)) ('causing', 'Reg', (101, 108)) ('familial PPGL', 'Disease', (124, 137)) ('mutations', 'Var', (13, 22)) ('SDH', 'Gene', (75, 78)) 8831 31368675 Occurrence of PPGLs in carriers of SDHB, SDHC and SDHD subunit mutations has been long reported, but it is only recently that variants in the SDHA subunit have been linked to PPGL formation. ('mutations', 'Var', (63, 72)) ('SDHA', 'Gene', '6389', (142, 146)) ('SDHD', 'Disease', 'None', (50, 54)) ('variants', 'Var', (126, 134)) ('SDHB', 'Gene', (35, 39)) ('SDHC', 'Gene', (41, 45)) ('SDHA', 'Gene', (142, 146)) ('SDHC', 'Gene', '6391', (41, 45)) ('SDHD', 'Disease', (50, 54)) ('PPGLs', 'Chemical', '-', (14, 19)) ('SDHB', 'Gene', '6390', (35, 39)) ('linked', 'Reg', (165, 171)) 8832 31368675 Previously documented cases have, to our knowledge, only been found in isolated cases where pathogenic SDHA variants were identified retrospectively. ('SDHA', 'Gene', '6389', (103, 107)) ('SDHA', 'Gene', (103, 107)) ('variants', 'Var', (108, 116)) 8833 31368675 We report the case of an asymptomatic suspected carotid body tumour found during surveillance screening in a 72-year-old female who is a known carrier of a germline SDHA pathogenic variant. ('SDHA', 'Gene', (165, 169)) ('tumour', 'Disease', 'MESH:D009369', (61, 67)) ('carotid body tumour', 'Phenotype', 'HP:0002668', (48, 67)) ('tumour', 'Disease', (61, 67)) ('variant', 'Var', (181, 188)) ('SDHA', 'Gene', '6389', (165, 169)) ('tumour', 'Phenotype', 'HP:0002664', (61, 67)) 8834 31368675 To our knowledge, this is the first screen that detected PPGL found in a previously identified SDHA pathogenic variant carrier, during surveillance imaging. ('SDHA', 'Gene', (95, 99)) ('variant', 'Var', (111, 118)) ('SDHA', 'Gene', '6389', (95, 99)) ('PPGL', 'Gene', (57, 61)) 8835 31368675 This finding supports the use of cascade genetic testing and surveillance screening in all carriers of a pathogenic SDHA variant. ('variant', 'Var', (121, 128)) ('carriers', 'Reg', (91, 99)) ('pathogenic', 'Reg', (105, 115)) ('SDHA', 'Gene', '6389', (116, 120)) ('SDHA', 'Gene', (116, 120)) 8836 31368675 SDH mutations are important causes of PPGL disease. ('SDH', 'Gene', (0, 3)) ('causes', 'Reg', (28, 34)) ('PPGL disease', 'Disease', (38, 50)) ('mutations', 'Var', (4, 13)) ('SDH', 'Gene', '6390', (0, 3)) 8840 31368675 Surveillance screening for SDH-related disease should be performed in identified carriers of a pathogenic SDHA variant. ('SDHA', 'Gene', (106, 110)) ('variant', 'Var', (111, 118)) ('SDH', 'Gene', (106, 109)) ('pathogenic', 'Reg', (95, 105)) ('SDH', 'Gene', (27, 30)) ('SDHA', 'Gene', '6389', (106, 110)) ('SDH', 'Gene', '6390', (27, 30)) ('SDH', 'Gene', '6390', (106, 109)) 8842 31368675 Mutations in genes that encode this complex have been associated with familial paraganglioma syndromes since 2000. ('familial paraganglioma syndromes', 'Disease', (70, 102)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('Mutations', 'Var', (0, 9)) ('familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (70, 102)) ('associated', 'Reg', (54, 64)) 8843 31368675 Mutations in SDHA subunit, however, have only more recently been linked to causing paraganglioma disease. ('linked', 'Reg', (65, 71)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('paraganglioma disease', 'Disease', (83, 104)) ('SDHA', 'Gene', '6389', (13, 17)) ('Mutations', 'Var', (0, 9)) ('paraganglioma disease', 'Disease', 'MESH:D010235', (83, 104)) ('SDHA', 'Gene', (13, 17)) 8844 31368675 All the cases described in SDHA mutation carriers have occurred in symptomatic index cases, following which the genetic variant was identified. ('SDHA', 'Gene', '6389', (27, 31)) ('mutation', 'Var', (32, 40)) ('SDHA', 'Gene', (27, 31)) 8845 31368675 We report the first case of a paraganglioma being identified in an asymptomatic SDHA mutation carrier on their first surveillance screening, which highlights the importance that asymptomatic relatives should undergo surveillance screening. ('paraganglioma', 'Phenotype', 'HP:0002668', (30, 43)) ('SDHA', 'Gene', '6389', (80, 84)) ('paraganglioma', 'Disease', (30, 43)) ('mutation', 'Var', (85, 93)) ('SDHA', 'Gene', (80, 84)) ('paraganglioma', 'Disease', 'MESH:D010235', (30, 43)) 8846 31368675 A 72-year-old female was referred to the endocrinology service following the identification of a pathogenic germline variant in the SDHA gene (c.91C>T, p.Arg31*) as part of a genetic panel for cardiomyopathy. ('p.Arg31*', 'Mutation', 'rs142441643', (152, 160)) ('c.91C>T', 'Mutation', 'rs142441643', (143, 150)) ('c.91C>T', 'Var', (143, 150)) ('pathogenic', 'Reg', (97, 107)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (193, 207)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (193, 207)) ('SDHA', 'Gene', (132, 136)) ('p.Arg31*', 'Var', (152, 160)) ('cardiomyopathy', 'Disease', (193, 207)) ('SDHA', 'Gene', '6389', (132, 136)) 8850 31368675 At this time a 218 gene cardiomyopathy genetic panel was performed, which included the SDHA gene due to reports of neonatal isolated dilated cardiomyopathy in certain SDHA variants. ('SDHA', 'Gene', (167, 171)) ('dilated cardiomyopathy', 'Disease', 'MESH:D002311', (133, 155)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (141, 155)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (141, 155)) ('dilated cardiomyopathy', 'Disease', (133, 155)) ('SDHA', 'Gene', (87, 91)) ('neonatal', 'Disease', (115, 123)) ('cardiomyopathy', 'Disease', (24, 38)) ('variants', 'Var', (172, 180)) ('dilated cardiomyopathy', 'Phenotype', 'HP:0001644', (133, 155)) ('SDHA', 'Gene', '6389', (167, 171)) ('cardiomyopathy', 'Disease', (141, 155)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (24, 38)) ('SDHA', 'Gene', '6389', (87, 91)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (24, 38)) 8851 31368675 The pathogenic variant in the SDHA gene was subsequently identified, with all other genetic mutations negative. ('variant', 'Var', (15, 22)) ('pathogenic', 'Reg', (4, 14)) ('SDHA', 'Gene', '6389', (30, 34)) ('SDHA', 'Gene', (30, 34)) 8856 31368675 On identification of an SDH mutation all patients are reviewed in clinic and biochemistry is sent (plasma or 24 h urine metanephrines). ('metanephrines', 'Chemical', 'MESH:D008676', (120, 133)) ('SDH', 'Gene', '6390', (24, 27)) ('patients', 'Species', '9606', (41, 49)) ('mutation', 'Var', (28, 36)) ('SDH', 'Gene', (24, 27)) 8867 31368675 If positive for the pathogenic variant, they will be entered into our SDH screening programme. ('variant', 'Var', (31, 38)) ('SDH', 'Gene', '6390', (70, 73)) ('positive', 'Reg', (3, 11)) ('SDH', 'Gene', (70, 73)) 8868 31368675 It is now widely accepted that patients who carry SDHB, SDHC and SDHD pathogenic variants should undergo surveillance screening. ('SDHD', 'Disease', (65, 69)) ('SDHB', 'Gene', (50, 54)) ('SDHC', 'Gene', (56, 60)) ('patients', 'Species', '9606', (31, 39)) ('SDHC', 'Gene', '6391', (56, 60)) ('SDHD', 'Disease', 'None', (65, 69)) ('variants', 'Var', (81, 89)) ('SDHB', 'Gene', '6390', (50, 54)) 8871 31368675 SDHA mutations are less common than SDHB and SDHD mutations and therefore there are fewer reported cases and a limited understanding of the best surveillance for these individuals. ('SDHB', 'Gene', '6390', (36, 40)) ('SDHA', 'Gene', (0, 4)) ('SDHB', 'Gene', (36, 40)) ('mutations', 'Var', (5, 14)) ('SDHA', 'Gene', '6389', (0, 4)) ('SDHD', 'Disease', 'None', (45, 49)) ('SDHD', 'Disease', (45, 49)) 8872 31368675 Mutations in the SDHA gene were first associated with autosomal recessive inheritance of the mitochondrial disease Leigh syndrome (juvenile encephalopathy), and more recently, with severe neurological dysfunction and cardiomyopathy. ('SDHA', 'Gene', (17, 21)) ('mitochondrial disease Leigh syndrome', 'Disease', (93, 129)) ('associated with', 'Reg', (38, 53)) ('neurological dysfunction', 'Disease', (188, 212)) ('juvenile encephalopathy', 'Phenotype', 'HP:0005681', (131, 154)) ('mitochondrial disease Leigh syndrome', 'Disease', 'MESH:D007888', (93, 129)) ('juvenile encephalopathy', 'Disease', (131, 154)) ('juvenile encephalopathy', 'Disease', 'MESH:D001927', (131, 154)) ('cardiomyopathy', 'Disease', (217, 231)) ('encephalopathy', 'Phenotype', 'HP:0001298', (140, 154)) ('Mutations', 'Var', (0, 9)) ('neurological dysfunction', 'Disease', 'MESH:D009422', (188, 212)) ('SDHA', 'Gene', '6389', (17, 21)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (217, 231)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (217, 231)) 8873 31368675 These rare cases of cardiomyopathy due to SDHA mutations occur in infancy with a high mortality due to congestive heart failure. ('cardiomyopathy', 'Disease', (20, 34)) ('SDHA', 'Gene', (42, 46)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (20, 34)) ('mutations', 'Var', (47, 56)) ('congestive heart failure', 'Phenotype', 'HP:0001635', (103, 127)) ('congestive heart failure', 'Disease', 'MESH:D006333', (103, 127)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (20, 34)) ('SDHA', 'Gene', '6389', (42, 46)) ('congestive heart failure', 'Disease', (103, 127)) 8874 31368675 As an autosomal dominant inherited tumour suppressor gene, SDHA mutations were only proven to be associated with inherited familial PGL syndromes in 2010. ('SDHA', 'Gene', (59, 63)) ('familial PGL syndromes', 'Disease', 'MESH:D010235', (123, 145)) ('tumour', 'Phenotype', 'HP:0002664', (35, 41)) ('tumour', 'Disease', 'MESH:D009369', (35, 41)) ('familial PGL syndromes', 'Disease', (123, 145)) ('mutations', 'Var', (64, 73)) ('SDHA', 'Gene', '6389', (59, 63)) ('associated', 'Reg', (97, 107)) ('tumour', 'Disease', (35, 41)) 8875 31368675 SDHA mutations were originally estimated to be found in just 3% of all familial PPGL cases, but this is now thought to be higher, at 7.6%. ('SDHA', 'Gene', '6389', (0, 4)) ('mutations', 'Var', (5, 14)) ('SDHA', 'Gene', (0, 4)) 8876 31368675 Penetrance figures are thought to be lower for SDHA mutation carriers compared to SDHB and SDHD, but the actual penetrance figures are unknown. ('SDHA', 'Gene', (47, 51)) ('Penetrance figures', 'MPA', (0, 18)) ('SDHB', 'Gene', '6390', (82, 86)) ('SDHD', 'Disease', 'None', (91, 95)) ('SDHA', 'Gene', '6389', (47, 51)) ('SDHB', 'Gene', (82, 86)) ('mutation', 'Var', (52, 60)) ('lower', 'NegReg', (37, 42)) ('SDHD', 'Disease', (91, 95)) 8880 31368675 None of these relatives were known to carry an SDHA mutation before diagnosis. ('SDHA', 'Gene', (47, 51)) ('SDHA', 'Gene', '6389', (47, 51)) ('mutation', 'Var', (52, 60)) 8881 31368675 The most common of which was c.91C>T, p.Arg31*, the same mutation identified in our patient. ('c.91C>T', 'Var', (29, 36)) ('p.Arg31*', 'Var', (38, 46)) ('p.Arg31*', 'Mutation', 'rs142441643', (38, 46)) ('c.91C>T', 'Mutation', 'rs142441643', (29, 36)) ('patient', 'Species', '9606', (84, 91)) 8884 31368675 In our patient, as the tumour has not been surgically resected, we were unable to perform further analysis on the tumour tissue to confirm the pathogenicity of this mutation variant in the development of this PGL, and therefore, the possibility remains that the development of this PGL may be unrelated to the discovered SDHA germline variant. ('tumour', 'Phenotype', 'HP:0002664', (23, 29)) ('tumour', 'Disease', (114, 120)) ('SDHA', 'Gene', (321, 325)) ('tumour', 'Disease', 'MESH:D009369', (23, 29)) ('patient', 'Species', '9606', (7, 14)) ('SDHA', 'Gene', '6389', (321, 325)) ('tumour', 'Disease', (23, 29)) ('tumour', 'Phenotype', 'HP:0002664', (114, 120)) ('variant', 'Var', (174, 181)) ('tumour', 'Disease', 'MESH:D009369', (114, 120)) 8885 31368675 Previous reports have shown this SDHA variant to be pathogenic, with in silico analysis suggesting a truncated protein is produced, with loss of protein function demonstrated by negative staining with SDHA immunohistochemistry. ('SDHA', 'Gene', '6389', (201, 205)) ('SDHA', 'Gene', '6389', (33, 37)) ('variant', 'Var', (38, 45)) ('SDHA', 'Gene', (201, 205)) ('SDHA', 'Gene', (33, 37)) 8886 31368675 Another paper used performed metabolic analysis on a PGL from a patient with the same mutation variant as our patient using MRI spectroscopy and identified a succinate peak in the tumour tissue, again providing supporting evidence to the pathogenicity of this mutation variant. ('patient', 'Species', '9606', (64, 71)) ('variant', 'Var', (95, 102)) ('tumour', 'Phenotype', 'HP:0002664', (180, 186)) ('tumour', 'Disease', 'MESH:D009369', (180, 186)) ('patient', 'Species', '9606', (110, 117)) ('succinate peak', 'MPA', (158, 172)) ('succinate', 'Chemical', 'MESH:D019802', (158, 167)) ('tumour', 'Disease', (180, 186)) 8888 31368675 Mutations in the SDHA gene are rare causes of cardiomyopathy, and the authors are surprised that the SDHA gene is included in the panel test. ('SDHA', 'Gene', (17, 21)) ('SDHA', 'Gene', '6389', (101, 105)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (46, 60)) ('SDHA', 'Gene', (101, 105)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (46, 60)) ('Mutations', 'Var', (0, 9)) ('SDHA', 'Gene', '6389', (17, 21)) ('cardiomyopathy', 'Disease', (46, 60)) ('causes', 'Reg', (36, 42)) 8889 31368675 However, secretory PPGLs are recognised as more common causes of cardiomyopathy and a more practical approach would be to screen for PPGLs with a single plasma or urine metanephrine measurement in patients with unexplained cardiomyopathies. ('PPGLs', 'Chemical', '-', (19, 24)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (65, 79)) ('patients', 'Species', '9606', (197, 205)) ('PPGLs', 'Chemical', '-', (133, 138)) ('PPGLs', 'Gene', (133, 138)) ('cardiomyopathy', 'Disease', (65, 79)) ('unexplained cardiomyopathies', 'Disease', 'MESH:D009202', (211, 239)) ('secretory', 'Var', (9, 18)) ('metanephrine', 'Chemical', 'MESH:D008676', (169, 181)) ('cardiomyopathies', 'Phenotype', 'HP:0001638', (223, 239)) ('causes', 'Reg', (55, 61)) ('unexplained cardiomyopathies', 'Disease', (211, 239)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (65, 79)) 8890 31368675 To our knowledge, we report the first case of a surveillance screen detected PPGL to be found in an asymptomatic individual with previously identified SDHA mutation status. ('SDHA', 'Gene', (151, 155)) ('SDHA', 'Gene', '6389', (151, 155)) ('PPGL', 'Gene', (77, 81)) ('mutation', 'Var', (156, 164)) 8894 31368675 Although the true penetrance rates are unknown in SDHA mutation carriers, especially for specific mutation variants, as per SDHB and SDHD carriers, accurate penetrance rates can only be established through long-term follow-up of asymptomatic carriers, and perhaps subsequent surveillance protocols need to be adapted to be more personalised taking into account factors such as the specific mutation variant, other relevant comorbidities (e.g. ('SDHB', 'Gene', (124, 128)) ('SDHA', 'Gene', '6389', (50, 54)) ('variants', 'Var', (107, 115)) ('SDHD', 'Disease', 'None', (133, 137)) ('SDHA', 'Gene', (50, 54)) ('SDHD', 'Disease', (133, 137)) ('SDHB', 'Gene', '6390', (124, 128)) 8896 31368675 We believe therefore that this case highlights the potential importance of at least an initial surveillance screening in all newly identified SDHA mutation carriers. ('SDHA', 'Gene', '6389', (142, 146)) ('mutation', 'Var', (147, 155)) ('SDHA', 'Gene', (142, 146)) 8924 31034925 Under hypoxic conditions, the lack of oxygen curtails PHD activity thereby leading to the stabilization of HIF. ('oxygen', 'Chemical', 'MESH:D010100', (38, 44)) ('leading to', 'Reg', (75, 85)) ('lack', 'Var', (30, 34)) ('stabilization', 'MPA', (90, 103)) ('curtails', 'NegReg', (45, 53)) ('PHD', 'Disease', 'MESH:D011547', (54, 57)) ('PHD', 'Disease', (54, 57)) 8926 31034925 The corresponding hydroxylase is HIF1AN, which binds to the inhibitory domain of HIF-1alpha and is capable of hydroxylating N803 in the adjacent C-terminal domain. ('N803', 'Chemical', '-', (124, 128)) ('HIF-1alpha', 'Gene', '3091', (81, 91)) ('N803', 'Var', (124, 128)) ('HIF-1alpha', 'Gene', (81, 91)) ('hydroxylating', 'MPA', (110, 123)) ('binds', 'Interaction', (47, 52)) 8928 31034925 Given the important roles of oxygen sensing by HIF in development, homeostasis and diseases such as cancer, anemia or ischemic vascular disease, HIF1AN has been predicted to modulate all these physiological processes. ('anemia', 'Disease', (108, 114)) ('anemia', 'Disease', 'MESH:D000740', (108, 114)) ('ischemic vascular disease', 'Disease', 'MESH:D000783', (118, 143)) ('cancer', 'Phenotype', 'HP:0002664', (100, 106)) ('anemia', 'Phenotype', 'HP:0001903', (108, 114)) ('HIF1AN', 'Var', (145, 151)) ('modulate', 'Reg', (174, 182)) ('oxygen', 'Chemical', 'MESH:D010100', (29, 35)) ('cancer', 'Disease', (100, 106)) ('cancer', 'Disease', 'MESH:D009369', (100, 106)) ('homeostasis and diseases', 'Disease', 'MESH:D003141', (67, 91)) ('ischemic vascular disease', 'Disease', (118, 143)) 8931 31034925 In addition, intracardial injection of shRNA directed against HIF1AN cooperated with downregulation of PHD2 during recovery after myocardial infarction in mice, resulting in improved stem cell mobilization and angiogenesis; this may represent another instance when HIF1AN constrains HIF function and perhaps hints at a role for the HIF1AN-HIF interaction in repair after injury rather than normal development. ('myocardial infarction', 'Disease', 'MESH:D009203', (130, 151)) ('stem cell mobilization', 'CPA', (183, 205)) ('downregulation', 'NegReg', (85, 99)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (130, 151)) ('HIF1AN', 'Var', (265, 271)) ('mice', 'Species', '10090', (155, 159)) ('PHD2', 'Gene', '112405', (103, 107)) ('HIF', 'MPA', (283, 286)) ('angiogenesis', 'CPA', (210, 222)) ('myocardial infarction', 'Disease', (130, 151)) ('improved', 'PosReg', (174, 182)) ('PHD2', 'Gene', (103, 107)) 8936 31034925 While the relevance of those hydroxylation events is currently unresolved, HIF1AN-mediated hydroxylation of N242 within the cytoplasmic ankyrin repeat domain of the ion channel TRPV3 was shown to inhibit its in vitro function. ('in vitro function', 'CPA', (208, 225)) ('N242', 'Chemical', '-', (108, 112)) ('inhibit', 'NegReg', (196, 203)) ('TRPV3', 'Gene', (177, 182)) ('hydroxylation', 'MPA', (91, 104)) ('TRPV3', 'Gene', '162514', (177, 182)) ('N242', 'Var', (108, 112)) 8939 31034925 Hence, HIF1AN inhibition is predicted to aggravate ovarian cancer progression and consistently, low levels of HIF1AN were associated with increased stage and reduced survival of ovarian cancer patients. ('patients', 'Species', '9606', (193, 201)) ('increased', 'PosReg', (138, 147)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (178, 192)) ('stage', 'CPA', (148, 153)) ('aggravate', 'PosReg', (41, 50)) ('low levels', 'Var', (96, 106)) ('ovarian cancer', 'Disease', 'MESH:D010051', (178, 192)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (51, 65)) ('cancer', 'Phenotype', 'HP:0002664', (59, 65)) ('cancer', 'Phenotype', 'HP:0002664', (186, 192)) ('HIF1AN', 'Gene', (7, 13)) ('ovarian cancer', 'Disease', (178, 192)) ('ovarian cancer', 'Disease', 'MESH:D010051', (51, 65)) ('HIF1AN', 'Gene', (110, 116)) ('survival', 'CPA', (166, 174)) ('reduced', 'NegReg', (158, 165)) ('ovarian cancer', 'Disease', (51, 65)) ('inhibition', 'NegReg', (14, 24)) 8940 31034925 In contrast, HIF1AN may enhance breast cancer metastasis through asparagine hydroxylation and thereby inhibition of the E3 ubiquitin ligase HACE1, indicating that HIF1AN inhibition may also be beneficial in cancer therapy. ('HIF1AN', 'Var', (13, 19)) ('breast cancer', 'Disease', (32, 45)) ('cancer', 'Disease', 'MESH:D009369', (207, 213)) ('HACE1', 'Gene', '57531', (140, 145)) ('asparagine', 'Chemical', 'MESH:D001216', (65, 75)) ('breast cancer', 'Phenotype', 'HP:0003002', (32, 45)) ('cancer', 'Disease', (39, 45)) ('cancer', 'Disease', 'MESH:D009369', (39, 45)) ('cancer', 'Disease', (207, 213)) ('enhance', 'PosReg', (24, 31)) ('HACE1', 'Gene', (140, 145)) ('cancer', 'Phenotype', 'HP:0002664', (39, 45)) ('asparagine hydroxylation', 'MPA', (65, 89)) ('cancer', 'Phenotype', 'HP:0002664', (207, 213)) ('inhibition', 'NegReg', (102, 112)) ('breast cancer', 'Disease', 'MESH:D001943', (32, 45)) 8942 31034925 Possibly, this entails a HIF1AN-dependent decrease of the levels of the p53 tumor suppressor, but how HIF1AN does so is an open question. ('tumor suppressor', 'Gene', (76, 92)) ('tumor suppressor', 'Gene', '7248', (76, 92)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('levels of', 'MPA', (58, 67)) ('HIF1AN-dependent', 'Var', (25, 41)) ('decrease', 'NegReg', (42, 50)) 8944 31034925 Asparagine hydroxylation of RIPK4 by HIF1AN resulted in enhanced beta-catenin-dependent transcription, presumably because RIPK4 kinase activity was stimulated, and HIF1AN may thereby widely promote neoplasia that beta-catenin is known to stimulate. ('beta-catenin', 'Gene', '1499', (65, 77)) ('neoplasia', 'Disease', 'MESH:D009369', (198, 207)) ('RIPK4', 'Gene', (28, 33)) ('stimulated', 'PosReg', (148, 158)) ('HIF1AN', 'Gene', (37, 43)) ('neoplasia', 'Disease', (198, 207)) ('activity', 'MPA', (135, 143)) ('Asparagine hydroxylation', 'MPA', (0, 24)) ('enhanced', 'PosReg', (56, 64)) ('RIPK4', 'Gene', '54101', (28, 33)) ('RIPK4', 'Gene', (122, 127)) ('beta-catenin', 'Gene', (213, 225)) ('promote', 'PosReg', (190, 197)) ('HIF1AN', 'Var', (164, 170)) ('beta-catenin', 'Gene', '1499', (213, 225)) ('RIPK4', 'Gene', '54101', (122, 127)) ('neoplasia', 'Phenotype', 'HP:0002664', (198, 207)) ('Asparagine', 'Chemical', 'MESH:D001216', (0, 10)) ('beta-catenin', 'Gene', (65, 77)) 8945 31034925 In mice, knockout of HIF1AN led to a hypermetabolic state, characterized by enlarged oxygen consumption and heat production, increased oxidative metabolism, decreased metabolic efficiency in skeletal muscle, hyperventilation and an increased heart rate. ('increased', 'PosReg', (125, 134)) ('hypermetabolic state', 'MPA', (37, 57)) ('increased heart rate', 'Phenotype', 'HP:0001649', (232, 252)) ('heart rate', 'MPA', (242, 252)) ('oxygen', 'Chemical', 'MESH:D010100', (85, 91)) ('HIF1AN', 'Gene', (21, 27)) ('heat', 'CPA', (108, 112)) ('decreased', 'NegReg', (157, 166)) ('knockout', 'Var', (9, 17)) ('increased oxidative metabolism', 'Phenotype', 'HP:0025464', (125, 155)) ('mice', 'Species', '10090', (3, 7)) ('metabolic efficiency in skeletal muscle', 'MPA', (167, 206)) ('enlarged', 'PosReg', (76, 84)) ('increased', 'PosReg', (232, 241)) ('oxidative metabolism', 'MPA', (135, 155)) ('hyperventilation', 'Phenotype', 'HP:0002883', (208, 224)) ('oxygen consumption', 'MPA', (85, 103)) ('hyperventilation', 'MPA', (208, 224)) ('increased heart', 'Phenotype', 'HP:0001640', (232, 247)) 8946 31034925 Also, HIF1AN knockout mice displayed a reduced body mass, lower blood lipid levels and enhanced insulin sensitivity. ('enhanced insulin sensitivity', 'Phenotype', 'HP:0000855', (87, 115)) ('lower', 'NegReg', (58, 63)) ('body mass', 'CPA', (47, 56)) ('knockout', 'Var', (13, 21)) ('insulin sensitivity', 'CPA', (96, 115)) ('lipid', 'Chemical', 'MESH:D008055', (70, 75)) ('blood lipid levels', 'MPA', (64, 82)) ('enhanced', 'PosReg', (87, 95)) ('reduced', 'NegReg', (39, 46)) ('HIF1AN', 'Gene', (6, 12)) ('mice', 'Species', '10090', (22, 26)) 8949 31034925 Possibly, HIF1AN's impact on metabolism involves asparagine hydroxylation of the deubiquitinase OTUB1 that seems to suppress binding to many proteins related to metabolic processes. ('asparagine', 'Chemical', 'MESH:D001216', (49, 59)) ('OTUB1', 'Gene', '55611', (96, 101)) ('metabolism', 'MPA', (29, 39)) ('HIF1AN', 'Var', (10, 16)) ('suppress', 'NegReg', (116, 124)) ('proteins', 'Protein', (141, 149)) ('binding', 'Interaction', (125, 132)) ('asparagine hydroxylation', 'MPA', (49, 73)) ('OTUB1', 'Gene', (96, 101)) 8950 31034925 Mutations in ANKS6 and INVS can cause nephronophthisis, an autosomal recessive cystic kidney disease. ('ANKS6', 'Gene', (13, 18)) ('ANKS6', 'Gene', '203286', (13, 18)) ('INVS', 'Gene', (23, 27)) ('nephronophthisis', 'Disease', 'MESH:C537699', (38, 54)) ('nephronophthisis', 'Phenotype', 'HP:0000090', (38, 54)) ('nephronophthisis', 'Disease', (38, 54)) ('Mutations', 'Var', (0, 9)) ('cystic kidney', 'Phenotype', 'HP:0000107', (79, 92)) ('kidney disease', 'Phenotype', 'HP:0000112', (86, 100)) ('autosomal recessive cystic kidney disease', 'Disease', 'MESH:D052177', (59, 100)) ('autosomal recessive cystic kidney disease', 'Disease', (59, 100)) ('cause', 'Reg', (32, 37)) 8951 31034925 HIF1AN hydroxylates both proteins on asparagine residues and facilitates the formation of protein complexes containing both ANKS6 and INVS. ('HIF1AN', 'Var', (0, 6)) ('protein', 'Protein', (90, 97)) ('ANKS6', 'Gene', (124, 129)) ('ANKS6', 'Gene', '203286', (124, 129)) ('asparagine', 'Chemical', 'MESH:D001216', (37, 47)) ('formation', 'Interaction', (77, 86)) ('facilitates', 'PosReg', (61, 72)) 8952 31034925 HIF1AN knockdown in Xenopus led to edema and renal tubular shortening, implying that HIF1AN contributes to kidney development through posttranslational modification of ANKS6 and INVS. ('edema', 'Phenotype', 'HP:0000969', (35, 40)) ('contributes', 'PosReg', (92, 103)) ('ANKS6', 'Gene', (168, 173)) ('HIF1AN', 'Gene', (85, 91)) ('tubular shortening', 'Phenotype', 'HP:0003026', (51, 69)) ('edema and renal tubular shortening', 'Disease', 'MESH:D015499', (35, 69)) ('kidney development', 'CPA', (107, 125)) ('HIF1AN', 'Gene', (0, 6)) ('knockdown', 'Var', (7, 16)) ('Xenopus', 'Species', '8355', (20, 27)) ('ANKS6', 'Gene', '203286', (168, 173)) 8953 31034925 Nephronophthisis is just one of many ciliopathies, implicating that altered HIF1AN activity could contribute to their genesis through modulation of the primary cilia-associated ANKS6 and INVS proteins. ('activity', 'MPA', (83, 91)) ('contribute', 'Reg', (98, 108)) ('modulation', 'Reg', (134, 144)) ('INVS proteins', 'Protein', (187, 200)) ('ANKS6', 'Gene', (177, 182)) ('Nephronophthisis', 'Disease', (0, 16)) ('primary', 'Protein', (152, 159)) ('ANKS6', 'Gene', '203286', (177, 182)) ('Nephronophthisis', 'Phenotype', 'HP:0000090', (0, 16)) ('HIF1AN', 'Gene', (76, 82)) ('altered', 'Var', (68, 75)) 8954 31034925 In addition, HIF1AN may thereby also affect tumorigenesis, since primary cilia defects are correlated with both pro- and anti-tumor effects. ('HIF1AN', 'Var', (13, 19)) ('cilia defects', 'Disease', (73, 86)) ('affect', 'Reg', (37, 43)) ('cilia defects', 'Disease', 'MESH:C536287', (73, 86)) ('tumor', 'Disease', 'MESH:D009369', (44, 49)) ('tumor', 'Disease', 'MESH:D009369', (126, 131)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('tumor', 'Disease', (44, 49)) ('tumor', 'Disease', (126, 131)) 8963 31034925 In Drosophila, knockout of HSPBAP1 led to slower sedation upon first exposure to low ethanol doses and decreased ethanol tolerance upon repeated exposure. ('ethanol tolerance', 'MPA', (113, 130)) ('knockout', 'Var', (15, 23)) ('HSPBAP1', 'Gene', (27, 34)) ('HSPBAP1', 'Gene', '79663', (27, 34)) ('decreased', 'NegReg', (103, 112)) ('slower', 'NegReg', (42, 48)) ('Drosophila', 'Species', '7227', (3, 13)) ('ethanol', 'Chemical', 'MESH:D000431', (85, 92)) ('ethanol', 'Chemical', 'MESH:D000431', (113, 120)) ('sedation', 'MPA', (49, 57)) 8966 31034925 First, a fusion transcript of HSPBAP1 as a consequence of a chromosomal translocation was found in a case of familial renal cell cancer. ('cancer', 'Phenotype', 'HP:0002664', (129, 135)) ('found', 'Reg', (90, 95)) ('consequence', 'Reg', (43, 54)) ('HSPBAP1', 'Gene', (30, 37)) ('familial renal cell cancer', 'Disease', (109, 135)) ('familial renal cell cancer', 'Disease', 'MESH:C538614', (109, 135)) ('fusion', 'Var', (9, 15)) ('chromosomal translocation', 'Var', (60, 85)) ('HSPBAP1', 'Gene', '79663', (30, 37)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (118, 135)) 8968 31034925 Accordingly, dysregulation of expression through placement of a novel promoter upstream of the HSPBAP1 gene rather than an inactivated HSPBAP1 protein may be involved in disease formation. ('expression', 'MPA', (30, 40)) ('dysregulation', 'Var', (13, 26)) ('involved', 'Reg', (158, 166)) ('HSPBAP1', 'Gene', (135, 142)) ('HSPBAP1', 'Gene', (95, 102)) ('HSPBAP1', 'Gene', '79663', (135, 142)) ('HSPBAP1', 'Gene', '79663', (95, 102)) 8978 31034925 One group reported that such endoproteolytic activity occurs after monomethylated K4, K9, K27 and K36 on histone H3, with a preference for monomethylated K9, while the second group found histones H2, H3 and H4 as substrates when they were mono- or dimethylated (symmetrically or asymmetrically) on arginine residues. ('endoproteolytic activity', 'MPA', (29, 53)) ('arginine', 'Chemical', 'MESH:D001120', (298, 306)) ('K36', 'Gene', '8689', (98, 101)) ('monomethylated K4', 'Var', (67, 84)) ('K36', 'Gene', (98, 101)) ('K27', 'Gene', '342574', (90, 93)) ('K27', 'Gene', (90, 93)) 8979 31034925 In support of cleavage after methylated arginine residues, ablation of JMJD5 led to increased H3R2me2 and H4R3me2 levels. ('arginine', 'Chemical', 'MESH:D001120', (40, 48)) ('H4R3me2', 'Chemical', '-', (106, 113)) ('H3R2me2', 'Chemical', '-', (94, 101)) ('H4R3me2 levels', 'MPA', (106, 120)) ('increased', 'PosReg', (84, 93)) ('ablation', 'Var', (59, 67)) ('JMJD5', 'Gene', (71, 76)) 8982 31034925 One report indicated that 2OG had marginal impact on proteolytic activity, while the other showed that mutation of the 2OG binding site within the JmjC domain impaired it. ('binding', 'Interaction', (123, 130)) ('2OG', 'Gene', (119, 122)) ('proteolytic activity', 'MPA', (53, 73)) ('2OG', 'Chemical', 'MESH:D007656', (26, 29)) ('2OG', 'Chemical', 'MESH:D007656', (119, 122)) ('mutation', 'Var', (103, 111)) ('impaired', 'NegReg', (159, 167)) 8987 31034925 In contrast, JMJD5 knockout in Arabidopsis or Drosophila was not lethal. ('Drosophila', 'Species', '7227', (46, 56)) ('Arabidopsis', 'Species', '3702', (31, 42)) ('JMJD5', 'Gene', (13, 18)) ('knockout', 'Var', (19, 27)) 8988 31034925 Notably, JMJD5 ablation in Arabidopsis, Drosophila or human U2OS osteosarcoma cells resulted into a short-period circadian phenotype and additionally a reduction in daytime sleep was observed in Drosophila. ('human', 'Species', '9606', (54, 59)) ('ablation', 'Var', (15, 23)) ('Drosophila', 'Species', '7227', (40, 50)) ('osteosarcoma', 'Phenotype', 'HP:0002669', (65, 77)) ('osteosarcoma', 'Disease', (65, 77)) ('osteosarcoma', 'Disease', 'MESH:D012516', (65, 77)) ('short-period circadian phenotype', 'MPA', (100, 132)) ('Arabidopsis', 'Species', '3702', (27, 38)) ('JMJD5', 'Gene', (9, 14)) ('Drosophila', 'Species', '7227', (195, 205)) ('U2OS', 'CellLine', 'CVCL:0042', (60, 64)) ('daytime sleep', 'MPA', (165, 178)) ('reduction', 'NegReg', (152, 161)) ('daytime sleep', 'Phenotype', 'HP:0002360', (165, 178)) 8993 31034925 Embryonic lethality upon JMJD5 ablation was ameliorated by knockout of the cell cycle inhibitor p21 and even more so by knockout of the p53 tumor suppressor, but respective mouse embryos still died during gestation. ('Embryonic lethality', 'Disease', (0, 19)) ('ameliorated', 'PosReg', (44, 55)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('Embryonic lethality', 'Disease', 'MESH:D020964', (0, 19)) ('knockout', 'Var', (120, 128)) ('JMJD5', 'Gene', (25, 30)) ('mouse', 'Species', '10090', (173, 178)) ('knockout', 'Var', (59, 67)) ('tumor suppressor', 'Gene', (140, 156)) ('ablation', 'Var', (31, 39)) ('tumor suppressor', 'Gene', '7248', (140, 156)) ('p53', 'Gene', (136, 139)) 8994 31034925 Similarly, JMJD5 downregulation in human embryonic stem cells led to p21 upregulation, and p21 shRNA rescued the loss of pluripotency and cell cycle defects caused by JMJD5 shRNA. ('cell cycle defects', 'CPA', (138, 156)) ('loss of pluripotency', 'Disease', (113, 133)) ('p21', 'Gene', (69, 72)) ('human', 'Species', '9606', (35, 40)) ('cell cycle defects', 'Phenotype', 'HP:0011018', (138, 156)) ('downregulation', 'NegReg', (17, 31)) ('loss of pluripotency', 'Disease', 'MESH:D014786', (113, 133)) ('JMJD5', 'Var', (167, 172)) ('p21 shRNA', 'Var', (91, 100)) ('upregulation', 'PosReg', (73, 85)) 9000 31034925 Within the cell nucleus, JMJD5 and PKM2 jointly regulated gene transcription in both breast and prostate cancer cells and promoted aerobic glycolysis. ('aerobic glycolysis', 'MPA', (131, 149)) ('JMJD5', 'Var', (25, 30)) ('gene transcription', 'MPA', (58, 76)) ('prostate cancer', 'Phenotype', 'HP:0012125', (96, 111)) ('breast and prostate cancer', 'Disease', 'MESH:D001943', (85, 111)) ('promoted', 'PosReg', (122, 130)) ('PKM2', 'Gene', (35, 39)) ('cancer', 'Phenotype', 'HP:0002664', (105, 111)) ('PKM2', 'Gene', '5315', (35, 39)) ('regulated', 'Reg', (48, 57)) 9003 31034925 Likewise, JMJD5 shRNA impaired proliferation and invasion of Caco-2 colon cancer cells, and JMJD5 was overexpressed and correlated with lower survival in colorectal cancer patients. ('survival', 'MPA', (142, 150)) ('JMJD5', 'Var', (10, 15)) ('lower', 'NegReg', (136, 141)) ('colorectal cancer', 'Disease', (154, 171)) ('proliferation', 'CPA', (31, 44)) ('colon cancer', 'Phenotype', 'HP:0003003', (68, 80)) ('colon cancer', 'Disease', 'MESH:D015179', (68, 80)) ('cancer', 'Phenotype', 'HP:0002664', (165, 171)) ('cancer', 'Phenotype', 'HP:0002664', (74, 80)) ('JMJD5', 'Var', (92, 97)) ('impaired', 'NegReg', (22, 30)) ('Caco-2', 'CellLine', 'CVCL:0025', (61, 67)) ('invasion', 'CPA', (49, 57)) ('colon cancer', 'Disease', (68, 80)) ('colorectal cancer', 'Disease', 'MESH:D015179', (154, 171)) ('patients', 'Species', '9606', (172, 180)) ('overexpressed', 'PosReg', (102, 115)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (154, 171)) 9005 31034925 Hence, one may imagine that loss of JMJD5 leads to inaccurate mitosis and the development of aneuploidy that is thought to be important for both cancer initiation and evolution. ('loss', 'Var', (28, 32)) ('cancer initiation', 'Disease', (145, 162)) ('aneuploidy', 'Disease', (93, 103)) ('cancer', 'Phenotype', 'HP:0002664', (145, 151)) ('JMJD5', 'Gene', (36, 41)) ('aneuploidy', 'Disease', 'MESH:D000782', (93, 103)) ('mitosis', 'Disease', (62, 69)) ('mitosis', 'Disease', 'None', (62, 69)) ('cancer initiation', 'Disease', 'MESH:D009369', (145, 162)) 9007 31034925 In C. elegans, feeding with JMJD5 siRNA induced mutations in the germline and genetic ablation of JMJD5 led to hypersensitivity to ionizing radiation and impaired DNA double strand break repair through homologous recombination, while JMJD5 downregulation in NIH3T3 cells resulted in defective mismatch repair. ('mismatch repair', 'MPA', (293, 308)) ('defective', 'NegReg', (283, 292)) ('hypersensitivity to ionizing radiation', 'Disease', (111, 149)) ('C. elegans', 'Species', '6239', (3, 13)) ('NIH3T3', 'CellLine', 'CVCL:0594', (258, 264)) ('homologous', 'MPA', (202, 212)) ('DNA double strand break repair', 'MPA', (163, 193)) ('impaired', 'NegReg', (154, 162)) ('JMJD5', 'Gene', (98, 103)) ('downregulation', 'NegReg', (240, 254)) ('hypersensitivity to ionizing radiation', 'Disease', 'MESH:D004194', (111, 149)) ('mutations', 'Var', (48, 57)) 9012 31034925 Hydroxylation of DRG1\2 promoted their binding to RNA, but a corresponding biological relevance has not yet been established. ('RNA', 'Protein', (50, 53)) ('DRG1\\2', 'Gene', (17, 23)) ('promoted', 'PosReg', (24, 32)) ('Hydroxylation', 'Var', (0, 13)) ('binding', 'Interaction', (39, 46)) ('DRG1\\2', 'Gene', '4733;1819', (17, 23)) 9028 31034925 Consistently, deletion of RIOX1 in mesenchymal cells produced mice with an increased number of preosteoblasts and osteoblasts, a larger skeleton and higher bone mass. ('mice', 'Species', '10090', (62, 66)) ('increased', 'PosReg', (75, 84)) ('larger', 'PosReg', (129, 135)) ('deletion', 'Var', (14, 22)) ('higher', 'PosReg', (149, 155)) ('RIOX1', 'Gene', (26, 31)) ('bone mass', 'CPA', (156, 165)) 9033 31034925 Unexpectedly, IL4 produced in response to house dust mites was less in RIOX2 knockout compared to wild-type mice. ('house dust mites', 'Phenotype', 'HP:0410325', (42, 58)) ('IL4', 'Gene', (14, 17)) ('knockout', 'Var', (77, 85)) ('IL4', 'Gene', '16189', (14, 17)) ('mice', 'Species', '10090', (108, 112)) ('RIOX2', 'Gene', (71, 76)) ('less', 'NegReg', (63, 67)) ('dust mites', 'Phenotype', 'HP:0410324', (48, 58)) 9035 31034925 Regardless, RIOX2 knockout mice, which are viable and fertile, displayed a reduced allergic response in an asthma model, while a single-nucleotide polymorphism in the RIOX2 gene was associated with the development of childhood asthma and increased IL4 levels. ('asthma', 'Disease', (227, 233)) ('asthma', 'Disease', 'MESH:D001249', (107, 113)) ('asthma', 'Disease', 'MESH:D001249', (227, 233)) ('mice', 'Species', '10090', (27, 31)) ('asthma', 'Disease', (107, 113)) ('IL4', 'Gene', (248, 251)) ('associated with', 'Reg', (182, 197)) ('RIOX2', 'Gene', (167, 172)) ('increased', 'PosReg', (238, 247)) ('reduced', 'NegReg', (75, 82)) ('IL4', 'Gene', '16189', (248, 251)) ('single-nucleotide polymorphism', 'Var', (129, 159)) ('allergic', 'Disease', 'MESH:D004342', (83, 91)) ('increased IL4 levels', 'Phenotype', 'HP:0032300', (238, 258)) ('asthma', 'Phenotype', 'HP:0002099', (107, 113)) ('asthma', 'Phenotype', 'HP:0002099', (227, 233)) ('allergic response', 'Phenotype', 'HP:0012393', (83, 100)) ('allergic', 'Disease', (83, 91)) 9037 31034925 Together, these data imply that inhibition of RIOX2 might be beneficial in the treatment of asthma and autoimmune diseases. ('asthma', 'Phenotype', 'HP:0002099', (92, 98)) ('inhibition', 'Var', (32, 42)) ('RIOX2', 'Gene', (46, 51)) ('autoimmune diseases', 'Disease', 'MESH:D001327', (103, 122)) ('autoimmune diseases', 'Disease', (103, 122)) ('autoimmune diseases', 'Phenotype', 'HP:0002960', (103, 122)) ('beneficial', 'PosReg', (61, 71)) ('asthma', 'Disease', 'MESH:D001249', (92, 98)) ('asthma', 'Disease', (92, 98)) 9038 31034925 Many reports have associated RIOX2 with colon cancer, esophageal squamous cell carcinoma, lung cancer, renal cell carcinoma, gastric adenocarcinoma, hepatocellular carcinoma, cholangiocarcinoma, pancreatic cancer or glioblastoma, demonstrating that RIOX2 is overexpressed in tumor specimens compared to normal tissue, that high RIOX2 expression correlates with an adverse prognosis, and/or that RIOX2 downregulation impairs proliferation or survival of cancer cells. ('lung cancer', 'Disease', 'MESH:D008175', (90, 101)) ('cancer', 'Disease', 'MESH:D009369', (46, 52)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (65, 88)) ('carcinoma', 'Phenotype', 'HP:0030731', (184, 193)) ('tumor', 'Disease', (275, 280)) ('carcinoma', 'Phenotype', 'HP:0030731', (114, 123)) ('hepatocellular carcinoma', 'Phenotype', 'HP:0001402', (149, 173)) ('RIOX2', 'Gene', (328, 333)) ('lung cancer', 'Phenotype', 'HP:0100526', (90, 101)) ('cancer', 'Disease', (453, 459)) ('carcinoma', 'Phenotype', 'HP:0030731', (79, 88)) ('tumor', 'Disease', 'MESH:D009369', (275, 280)) ('pancreatic cancer', 'Disease', 'MESH:D010190', (195, 212)) ('colon cancer', 'Phenotype', 'HP:0003003', (40, 52)) ('cancer', 'Phenotype', 'HP:0002664', (453, 459)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (103, 123)) ('cholangiocarcinoma', 'Phenotype', 'HP:0030153', (175, 193)) ('cancer', 'Disease', (95, 101)) ('glioblastoma', 'Disease', 'MESH:D005909', (216, 228)) ('expression', 'MPA', (334, 344)) ('hepatocellular carcinoma', 'Disease', 'MESH:D006528', (149, 173)) ('cancer', 'Disease', 'MESH:D009369', (206, 212)) ('high', 'Var', (323, 327)) ('gastric adenocarcinoma', 'Disease', 'MESH:D013274', (125, 147)) ('cancer', 'Disease', (206, 212)) ('cancer', 'Phenotype', 'HP:0002664', (95, 101)) ('cholangiocarcinoma', 'Disease', (175, 193)) ('pancreatic cancer', 'Disease', (195, 212)) ('esophageal squamous cell carcinoma', 'Disease', (54, 88)) ('colon cancer', 'Disease', 'MESH:D015179', (40, 52)) ('cancer', 'Phenotype', 'HP:0002664', (206, 212)) ('tumor', 'Phenotype', 'HP:0002664', (275, 280)) ('cancer', 'Disease', (46, 52)) ('cholangiocarcinoma', 'Disease', 'MESH:D018281', (175, 193)) ('glioblastoma', 'Disease', (216, 228)) ('lung cancer', 'Disease', (90, 101)) ('hepatocellular carcinoma', 'Disease', (149, 173)) ('RIOX2', 'Gene', (395, 400)) ('proliferation', 'CPA', (424, 437)) ('glioblastoma', 'Phenotype', 'HP:0012174', (216, 228)) ('carcinoma', 'Phenotype', 'HP:0030731', (164, 173)) ('cancer', 'Disease', 'MESH:D009369', (453, 459)) ('cancer', 'Phenotype', 'HP:0002664', (46, 52)) ('downregulation impairs', 'NegReg', (401, 423)) ('renal cell carcinoma', 'Disease', (103, 123)) ('carcinoma', 'Phenotype', 'HP:0030731', (138, 147)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (103, 123)) ('cancer', 'Disease', 'MESH:D009369', (95, 101)) ('colon cancer', 'Disease', (40, 52)) ('esophageal squamous cell carcinoma', 'Disease', 'MESH:D000077277', (54, 88)) ('pancreatic cancer', 'Phenotype', 'HP:0002894', (195, 212)) ('gastric adenocarcinoma', 'Disease', (125, 147)) 9046 31034925 Preventing hydroxylation of eRF1 resulted in reduced efficiency of transcriptional termination, but no physiological consequences were examined. ('reduced', 'NegReg', (45, 52)) ('eRF1', 'Gene', '2107', (28, 32)) ('hydroxylation', 'Var', (11, 24)) ('eRF1', 'Gene', (28, 32)) ('transcriptional termination', 'MPA', (67, 94)) 9048 31034925 Further, similar to eRF1, JMJD4 is a predominantly cytoplasmic protein in HEK293T cells, which also holds true for Drosophila and human colon cells. ('eRF1', 'Gene', '2107', (20, 24)) ('HEK293T', 'CellLine', 'CVCL:0063', (74, 81)) ('eRF1', 'Gene', (20, 24)) ('Drosophila', 'Species', '7227', (115, 125)) ('JMJD4', 'Var', (26, 31)) ('human', 'Species', '9606', (130, 135)) 9050 31034925 This suggests, but does not prove, that JMJD4 promotes colon cancer formation. ('colon cancer', 'Phenotype', 'HP:0003003', (55, 67)) ('JMJD4', 'Var', (40, 45)) ('cancer', 'Phenotype', 'HP:0002664', (61, 67)) ('promotes', 'PosReg', (46, 54)) ('colon cancer', 'Disease', 'MESH:D015179', (55, 67)) ('colon cancer', 'Disease', (55, 67)) 9053 31034925 But contrasting this, there were no obvious growth defects in vivo, since JMJD4 ablation did not affect embryogenesis or postnatal development in mice or Drosophila. ('ablation', 'Var', (80, 88)) ('mice', 'Species', '10090', (146, 150)) ('Drosophila', 'Species', '7227', (154, 164)) ('JMJD4', 'Gene', (74, 79)) 9060 31034925 Demethylation of H4R3me2 by JMJD6 was likewise shown in another report, but JMJD6-mediated histone arginine demethylation was also reported to be not reproducible. ('Demethylation', 'MPA', (0, 13)) ('arginine', 'Chemical', 'MESH:D001120', (99, 107)) ('JMJD6', 'Var', (28, 33)) ('H4R3me2', 'Protein', (17, 24)) ('H4R3me2', 'Chemical', '-', (17, 24)) 9061 31034925 Additionally, in 2009, JMJD6 was shown to mediate lysine hydroxylation at the C5 position on U2AF65, and crystallographic studies supported such lysine hydroxylation over arginine demethylation. ('lysine', 'Chemical', 'MESH:D008239', (145, 151)) ('U2AF65', 'Gene', '11338', (93, 99)) ('arginine', 'Chemical', 'MESH:D001120', (171, 179)) ('JMJD6', 'Var', (23, 28)) ('lysine', 'Chemical', 'MESH:D008239', (50, 56)) ('mediate', 'Reg', (42, 49)) ('arginine demethylation', 'MPA', (171, 193)) ('lysine hydroxylation', 'MPA', (50, 70)) ('U2AF65', 'Gene', (93, 99)) 9062 31034925 Consistent with a role of U2AF65 in RNA splicing, JMJD6 downregulation affected the alternative splicing of some, but not all tested genes; moreover, JMJD6 cooperated with U2AF65 in splicing of the vascular endothelial growth factor receptor 1, which may explain how JMJD6 facilitates angiogenic sprouting. ('U2AF65', 'Gene', (26, 32)) ('JMJD6', 'Var', (267, 272)) ('affected', 'Reg', (71, 79)) ('JMJD6', 'Var', (150, 155)) ('alternative splicing', 'MPA', (84, 104)) ('U2AF65', 'Gene', (172, 178)) ('cooperated', 'Reg', (156, 166)) ('U2AF65', 'Gene', '11338', (26, 32)) ('downregulation', 'NegReg', (56, 70)) ('vascular endothelial growth factor receptor 1', 'Gene', (198, 243)) ('angiogenic sprouting', 'CPA', (285, 305)) ('splicing', 'MPA', (182, 190)) ('vascular endothelial growth factor receptor 1', 'Gene', '2321', (198, 243)) ('U2AF65', 'Gene', '11338', (172, 178)) ('facilitates', 'PosReg', (273, 284)) 9063 31034925 Subsequently, JMJD6-mediated lysine hydroxylation was also found in histones and the tumor suppressor p53. ('lysine', 'Chemical', 'MESH:D008239', (29, 35)) ('JMJD6-mediated', 'Var', (14, 28)) ('tumor suppressor', 'Gene', (85, 101)) ('histones', 'Protein', (68, 76)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('lysine hydroxylation', 'MPA', (29, 49)) ('tumor suppressor', 'Gene', '7248', (85, 101)) 9064 31034925 JMJD6 was also suggested to demethylate arginine residues in non-histone proteins, including estrogen receptoralpha, heat shock protein HSP70, tumor necrosis factor receptor-associated factor 6, transcription factor STAT1, and the stress granule nucleating protein G3BP1. ('arginine', 'Chemical', 'MESH:D001120', (40, 48)) ('tumor necrosis factor', 'Gene', (143, 164)) ('estrogen receptoralpha', 'Gene', (93, 115)) ('STAT1', 'Gene', '6772', (216, 221)) ('non-histone proteins', 'Protein', (61, 81)) ('tumor necrosis factor', 'Gene', '7124', (143, 164)) ('JMJD6', 'Gene', (0, 5)) ('shock', 'Disease', 'MESH:D012769', (122, 127)) ('demethylate', 'Var', (28, 39)) ('shock', 'Disease', (122, 127)) ('G3BP1', 'Gene', (265, 270)) ('G3BP1', 'Gene', '10146', (265, 270)) ('estrogen receptoralpha', 'Gene', '2099', (93, 115)) ('shock', 'Phenotype', 'HP:0031273', (122, 127)) ('STAT1', 'Gene', (216, 221)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) 9066 31034925 This small nuclear RNA that is involved in transcription elongation is stabilized by the addition of a methyl group onto the gamma-phosphate at its 5'-end. ('addition', 'Reg', (89, 97)) ('gamma-phosphate', 'Chemical', '-', (125, 140)) ('methyl', 'Var', (103, 109)) 9069 31034925 Although the JmjC domain was required for tyrosine kinase activity of JMJD6, it was not sufficient and in vitro kinase reactions with JMJD6 did not require 2OG and Fe2+, but rather ATP or GTP. ('GTP', 'Chemical', 'MESH:D006160', (188, 191)) ('Fe2+', 'Chemical', '-', (164, 168)) ('2OG', 'Chemical', 'MESH:D007656', (156, 159)) ('ATP', 'Chemical', 'MESH:D000255', (181, 184)) ('JMJD6', 'Var', (134, 139)) ('JMJD6', 'Gene', (70, 75)) ('tyrosine', 'Chemical', 'MESH:D014443', (42, 50)) 9073 31034925 Of note, interruption of this interaction with a monoclonal antibody reduced fibrosis at the primary tumor site and lung metastasis in a mouse mammary tumor model. ('tumor', 'Phenotype', 'HP:0002664', (151, 156)) ('fibrosis', 'Disease', 'MESH:D005355', (77, 85)) ('fibrosis', 'Disease', (77, 85)) ('reduced', 'NegReg', (69, 76)) ('mouse', 'Species', '10090', (137, 142)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('tumor', 'Disease', (151, 156)) ('tumor', 'Disease', (101, 106)) ('tumor', 'Disease', 'MESH:D009369', (151, 156)) ('interruption', 'Var', (9, 21)) ('interaction', 'Interaction', (30, 41)) ('tumor', 'Disease', 'MESH:D009369', (101, 106)) ('lung metastasis in a', 'CPA', (116, 136)) 9074 31034925 In general, JMJD6 appears to be a tumor promoter. ('JMJD6', 'Var', (12, 17)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('tumor', 'Disease', (34, 39)) ('tumor', 'Disease', 'MESH:D009369', (34, 39)) 9075 31034925 Overexpression of JMJD6 in various cancers and its correlation with decreased patient survival has been found, and JMJD6 reportedly enhanced tumor cell proliferation in vitro and in xenografts, increased cell invasion and metastasis, and promoted cancer stemness. ('tumor', 'Disease', 'MESH:D009369', (141, 146)) ('cancer', 'Phenotype', 'HP:0002664', (247, 253)) ('patient', 'Species', '9606', (78, 85)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('cancer', 'Phenotype', 'HP:0002664', (35, 41)) ('cancer stemness', 'Disease', 'MESH:D009369', (247, 262)) ('tumor', 'Disease', (141, 146)) ('cancers', 'Phenotype', 'HP:0002664', (35, 42)) ('increased', 'PosReg', (194, 203)) ('cell invasion', 'CPA', (204, 217)) ('enhanced', 'PosReg', (132, 140)) ('cancer stemness', 'Disease', (247, 262)) ('cancers', 'Disease', 'MESH:D009369', (35, 42)) ('promoted', 'PosReg', (238, 246)) ('JMJD6', 'Var', (115, 120)) ('cancers', 'Disease', (35, 42)) 9084 31034925 In addition, JMJD8 was shown to be required for invasion of squamous cell carcinoma cells, suggesting that JMJD8 stimulates metastasis. ('JMJD8', 'Var', (107, 112)) ('metastasis', 'CPA', (124, 134)) ('stimulates', 'PosReg', (113, 123)) ('carcinoma', 'Phenotype', 'HP:0030731', (74, 83)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (60, 83)) ('squamous cell carcinoma', 'Disease', 'MESH:D002294', (60, 83)) ('squamous cell carcinoma', 'Disease', (60, 83)) 9090 31034925 On the other hand, cancer cells often become addicted to glutamine as a carbon and nitrogen source and for energy production, and glutamine - after conversion to glutamate - can replenish 2OG (Fig. ('cancer', 'Disease', 'MESH:D009369', (19, 25)) ('cancer', 'Disease', (19, 25)) ('carbon', 'Chemical', 'MESH:D002244', (72, 78)) ('glutamate', 'Chemical', 'MESH:D018698', (162, 171)) ('2OG', 'Chemical', 'MESH:D007656', (188, 191)) ('2OG', 'MPA', (188, 191)) ('glutamine', 'Chemical', 'MESH:D005973', (57, 66)) ('glutamine', 'Chemical', 'MESH:D005973', (130, 139)) ('cancer', 'Phenotype', 'HP:0002664', (19, 25)) ('nitrogen', 'Chemical', 'MESH:D009584', (83, 91)) ('glutamine', 'Var', (130, 139)) 9096 31034925 In contrast, D-2-hydroxyglutarate generation from 2OG is catalyzed by neomorphic mutants of isocitrate dehydrogenase (IDH). ('2OG', 'Chemical', 'MESH:D007656', (50, 53)) ('citrate', 'Chemical', 'MESH:D019343', (95, 102)) ('mutants', 'Var', (81, 88)) ('D-2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (13, 33)) ('D-2-hydroxyglutarate generation', 'MPA', (13, 44)) 9098 31034925 In the same manner, succinate and fumarate repress JMJD catalytic activity, and enhanced levels of these molecules are observable upon mutation of succinate dehydrogenase (SDH) and fumarate hydratase (FH). ('JMJD catalytic activity', 'MPA', (51, 74)) ('succinate dehydrogenase', 'Gene', '6390', (147, 170)) ('levels of', 'MPA', (89, 98)) ('fumarate', 'Chemical', 'MESH:D005650', (34, 42)) ('fumarate hydratase', 'Gene', (181, 199)) ('fumarate hydratase', 'Gene', '2271', (181, 199)) ('succinate dehydrogenase', 'Gene', (147, 170)) ('SDH', 'Gene', (172, 175)) ('fumarate', 'Chemical', 'MESH:D005650', (181, 189)) ('FH', 'Gene', '2271', (201, 203)) ('succinate', 'Chemical', 'MESH:D019802', (20, 29)) ('enhanced', 'PosReg', (80, 88)) ('mutation', 'Var', (135, 143)) ('repress', 'NegReg', (43, 50)) ('SDH', 'Gene', '6390', (172, 175)) ('succinate', 'Chemical', 'MESH:D019802', (147, 156)) 9099 31034925 Gain-of-function mutations in IDH were discovered in low-grade glioma, glioblastoma, chondrosarcoma, cholangiocarcinoma or acute myeloid leukemia, while loss-of-function mutations in SDH were found in paraganglioma, pheochromocytoma, renal cell carcinoma, thyroid cancer or gastrointestinal stromal tumors, and mutated FH was detected in leiomyomatosis, renal cell cancer, paraganglioma, pheochromocytoma or neuroblastoma. ('cholangiocarcinoma', 'Phenotype', 'HP:0030153', (101, 119)) ('glioma', 'Phenotype', 'HP:0009733', (380, 386)) ('paraganglioma', 'Phenotype', 'HP:0002668', (373, 386)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (408, 421)) ('glioblastoma', 'Disease', (71, 83)) ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (123, 145)) ('SDH', 'Gene', '6390', (183, 186)) ('glioblastoma', 'Phenotype', 'HP:0012174', (71, 83)) ('cholangiocarcinoma', 'Disease', (101, 119)) ('Gain-of-function', 'PosReg', (0, 16)) ('pheochromocytoma', 'Disease', (388, 404)) ('gastrointestinal stromal tumors', 'Disease', (274, 305)) ('leiomyomatosis, renal cell cancer', 'Disease', 'MESH:C535516', (338, 371)) ('glioma', 'Phenotype', 'HP:0009733', (63, 69)) ('renal cell carcinoma', 'Disease', (234, 254)) ('paraganglioma', 'Disease', (201, 214)) ('mutations', 'Var', (17, 26)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (234, 254)) ('tumor', 'Phenotype', 'HP:0002664', (299, 304)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (388, 404)) ('cholangiocarcinoma', 'Disease', 'MESH:D018281', (101, 119)) ('paraganglioma', 'Disease', 'MESH:D010235', (201, 214)) ('glioma', 'Disease', (208, 214)) ('carcinoma', 'Phenotype', 'HP:0030731', (245, 254)) ('cancer', 'Phenotype', 'HP:0002664', (264, 270)) ('cancer', 'Phenotype', 'HP:0002664', (365, 371)) ('thyroid cancer', 'Disease', (256, 270)) ('tumors', 'Phenotype', 'HP:0002664', (299, 305)) ('SDH', 'Gene', (183, 186)) ('IDH', 'Gene', (30, 33)) ('glioma', 'Disease', 'MESH:D005910', (208, 214)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (216, 232)) ('loss-of-function', 'NegReg', (153, 169)) ('chondrosarcoma', 'Disease', (85, 99)) ('chondrosarcoma', 'Disease', 'MESH:D002813', (85, 99)) ('carcinoma', 'Phenotype', 'HP:0030731', (110, 119)) ('paraganglioma, pheochromocytoma or neuroblastoma', 'Disease', 'MESH:D010673', (373, 421)) ('paraganglioma', 'Disease', (373, 386)) ('acute myeloid leukemia', 'Disease', (123, 145)) ('glioma', 'Disease', (380, 386)) ('paraganglioma', 'Phenotype', 'HP:0002668', (201, 214)) ('pheochromocytoma', 'Disease', (216, 232)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (354, 371)) ('FH', 'Gene', '2271', (319, 321)) ('paraganglioma', 'Disease', 'MESH:D010235', (373, 386)) ('glioma', 'Phenotype', 'HP:0009733', (208, 214)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (216, 232)) ('thyroid cancer', 'Disease', 'MESH:D013964', (256, 270)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (274, 305)) ('glioma', 'Disease', (63, 69)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (274, 305)) ('glioma', 'Disease', 'MESH:D005910', (380, 386)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (129, 145)) ('leukemia', 'Phenotype', 'HP:0001909', (137, 145)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (234, 254)) ('glioblastoma', 'Disease', 'MESH:D005909', (71, 83)) ('mutations', 'Var', (170, 179)) ('chondrosarcoma', 'Phenotype', 'HP:0006765', (85, 99)) ('glioma', 'Disease', 'MESH:D005910', (63, 69)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (256, 270)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (123, 145)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (388, 404)) 9100 31034925 Interestingly, mutations in MDH were also found in paraganglioma and pheochromocytoma patients. ('paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (51, 85)) ('MDH', 'Gene', '4200', (28, 31)) ('mutations', 'Var', (15, 24)) ('glioma', 'Phenotype', 'HP:0009733', (58, 64)) ('paraganglioma', 'Phenotype', 'HP:0002668', (51, 64)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (69, 85)) ('found', 'Reg', (42, 47)) ('MDH', 'Gene', (28, 31)) ('patients', 'Species', '9606', (86, 94)) 9101 31034925 Although it is presently not proven that malate directly inhibits JMJD proteins, malate accumulation upon MDH mutation was accompanied by elevated fumarate levels, possibly due to end product inhibition of FH. ('FH', 'Gene', '2271', (206, 208)) ('malate', 'MPA', (81, 87)) ('fumarate', 'Chemical', 'MESH:D005650', (147, 155)) ('malate', 'Chemical', 'MESH:C030298', (81, 87)) ('fumarate levels', 'MPA', (147, 162)) ('MDH', 'Gene', '4200', (106, 109)) ('MDH', 'Gene', (106, 109)) ('mutation', 'Var', (110, 118)) ('malate', 'Chemical', 'MESH:C030298', (41, 47)) ('accumulation', 'PosReg', (88, 100)) ('elevated', 'PosReg', (138, 146)) 9103 31034925 On the other hand, MDH inactivating mutations should lead to less production of L-2-hydroxyglutarate and in that way to less inhibition of JMJD proteins. ('MDH', 'Gene', (19, 22)) ('inhibition', 'MPA', (125, 135)) ('L-2-hydroxyglutarate', 'Chemical', '-', (80, 100)) ('less', 'NegReg', (61, 65)) ('less', 'NegReg', (120, 124)) ('inactivating mutations', 'Var', (23, 45)) ('MDH', 'Gene', '4200', (19, 22)) ('production of L-2-hydroxyglutarate', 'MPA', (66, 100)) 9104 31034925 How these opposing consequences of MDH mutation are integrated into a net effect needs further study. ('MDH', 'Gene', '4200', (35, 38)) ('mutation', 'Var', (39, 47)) ('MDH', 'Gene', (35, 38)) 9105 31034925 Regardless, mutations in Krebs cycle enzymes can profoundly affect JMJD activity, but in what way this precisely impinges on each of the small JMJD proteins and if this is crucial for the function of oncometabolites are open questions. ('JMJD activity', 'MPA', (67, 80)) ('mutations', 'Var', (12, 21)) ('Krebs', 'Chemical', '-', (25, 30)) ('affect', 'Reg', (60, 66)) 9114 31034925 ROS can induce the oxidation of macromolecules and Fe2+, which is predicted to reduce JMJD enzymatic activity. ('oxidation of macromolecules', 'MPA', (19, 46)) ('ROS', 'Var', (0, 3)) ('Fe2+', 'Chemical', '-', (51, 55)) ('Fe2+', 'MPA', (51, 55)) ('ROS', 'Chemical', 'MESH:D017382', (0, 3)) ('induce', 'Reg', (8, 14)) 9118 31034925 A positive role of ascorbate (vitamin C) for the activity of hydroxylases has been firmly established ever since it was shown how lack of ascorbate causes scurvy through impaired collagen hydroxylation. ('impaired', 'NegReg', (170, 178)) ('lack', 'Var', (130, 134)) ('ascorbate', 'Chemical', 'MESH:D001205', (138, 147)) ('collagen hydroxylation', 'MPA', (179, 201)) ('ascorbate', 'Chemical', 'MESH:D001205', (19, 28)) ('ascorbate', 'Protein', (138, 147)) ('scurvy', 'Disease', (155, 161)) ('vitamin C', 'Chemical', 'MESH:D001205', (30, 39)) 9126 31034925 Accordingly, changes in Fe2+ should influence JMJD function, but in vivo evidence is acutely missing. ('Fe2+', 'Chemical', '-', (24, 28)) ('Fe2+', 'MPA', (24, 28)) ('JMJD function', 'CPA', (46, 59)) ('influence', 'Reg', (36, 45)) ('changes', 'Var', (13, 20)) 9130 31034925 On the other hand, too much iron can also kill cancer cells through ferroptosis, an iron-dependent, non- apoptotic regulated cell death pathway that is triggered through excessive lipid peroxidation. ('cancer', 'Disease', 'MESH:D009369', (47, 53)) ('iron', 'Chemical', 'MESH:D007501', (28, 32)) ('ferroptosis', 'Disease', (68, 79)) ('cancer', 'Disease', (47, 53)) ('lipid', 'Chemical', 'MESH:D008055', (180, 185)) ('too', 'Var', (19, 22)) ('iron', 'Chemical', 'MESH:D007501', (84, 88)) ('cancer', 'Phenotype', 'HP:0002664', (47, 53)) ('excessive lipid peroxidation', 'Phenotype', 'HP:0025464', (170, 198)) 9132 31034925 Several heavy metals, including arsenic, cadmium, chromium and nickel, are carcinogenic and also induce other pathologies like allergies, hypertension, pulmonary disease, renal dysfunction, diabetes, paralysis, osteoporosis, ulcer formation and mental retardation. ('mental retardation', 'Disease', (245, 263)) ('cadmium', 'Var', (41, 48)) ('ulcer', 'Disease', 'MESH:D014456', (225, 230)) ('hypertension', 'Disease', 'MESH:D006973', (138, 150)) ('renal dysfunction', 'Phenotype', 'HP:0000083', (171, 188)) ('osteoporosis', 'Disease', (211, 223)) ('hypertension', 'Disease', (138, 150)) ('pulmonary disease', 'Disease', 'MESH:D008171', (152, 169)) ('chromium', 'Var', (50, 58)) ('osteoporosis', 'Phenotype', 'HP:0000939', (211, 223)) ('cadmium', 'Chemical', 'MESH:D002104', (41, 48)) ('metal', 'Chemical', 'MESH:D008670', (14, 19)) ('pulmonary disease', 'Disease', (152, 169)) ('carcinogenic', 'Disease', (75, 87)) ('nickel', 'Chemical', 'MESH:D009532', (63, 69)) ('allergies', 'Phenotype', 'HP:0012393', (127, 136)) ('ulcer', 'Disease', (225, 230)) ('allergies', 'Disease', (127, 136)) ('induce', 'Reg', (97, 103)) ('arsenic', 'Chemical', 'MESH:D001151', (32, 39)) ('osteoporosis', 'Disease', 'MESH:D010024', (211, 223)) ('diabetes', 'Disease', (190, 198)) ('hypertension', 'Phenotype', 'HP:0000822', (138, 150)) ('paralysis', 'Phenotype', 'HP:0003470', (200, 209)) ('renal dysfunction', 'Disease', 'MESH:D007674', (171, 188)) ('carcinogenic', 'Disease', 'MESH:D063646', (75, 87)) ('paralysis', 'Disease', 'MESH:D010243', (200, 209)) ('arsenic', 'Var', (32, 39)) ('chromium', 'Chemical', 'MESH:D002857', (50, 58)) ('mental retardation', 'Phenotype', 'HP:0001249', (245, 263)) ('allergies', 'Disease', 'MESH:D004342', (127, 136)) ('mental retardation', 'Disease', 'MESH:D008607', (245, 263)) ('diabetes', 'Disease', 'MESH:D003920', (190, 198)) ('renal dysfunction', 'Disease', (171, 188)) ('paralysis', 'Disease', (200, 209)) 9135 31034925 And indeed, some JMJD lysine demethylases were shown to be inhibited upon replacement of Fe2+ by Ni2+. ('Fe2+', 'Chemical', '-', (89, 93)) ('Fe2+', 'MPA', (89, 93)) ('demethylase', 'Gene', (29, 40)) ('Ni2+', 'Chemical', '-', (97, 101)) ('demethylase', 'Gene', '8932', (29, 40)) ('inhibited', 'NegReg', (59, 68)) ('lysine', 'Chemical', 'MESH:D008239', (22, 28)) ('replacement', 'Var', (74, 85)) ('Ni2+', 'MPA', (97, 101)) 9142 31034925 Indeed, cell culture and xenograft studies provided strong evidence that small JMJD proteins are affecting cancer cell function. ('cancer', 'Phenotype', 'HP:0002664', (107, 113)) ('small', 'Var', (73, 78)) ('proteins', 'Protein', (84, 92)) ('affecting', 'Reg', (97, 106)) ('cancer', 'Disease', 'MESH:D009369', (107, 113)) ('cancer', 'Disease', (107, 113)) 9148 31034925 And the utility of such inhibitors will not be limited to controlling malignancies; for instance, inhibition of HIF1AN or RIOX2 may also be useful to treat metabolic syndrome or asthma, respectively. ('inhibition', 'Var', (98, 108)) ('asthma', 'Disease', 'MESH:D001249', (178, 184)) ('HIF1AN', 'Gene', (112, 118)) ('treat', 'Reg', (150, 155)) ('malignancies', 'Disease', 'MESH:D009369', (70, 82)) ('asthma', 'Phenotype', 'HP:0002099', (178, 184)) ('metabolic syndrome', 'Disease', (156, 174)) ('RIOX2', 'Gene', (122, 127)) ('metabolic syndrome', 'Disease', 'MESH:D024821', (156, 174)) ('malignancies', 'Disease', (70, 82)) ('asthma', 'Disease', (178, 184)) 9149 31034925 In summary, the small JMJD proteins are involved in a myriad of physiological processes related to development, homeostasis and disease that highlights their wide-ranging biological importance. ('homeostasis and disease', 'Disease', 'MESH:D003141', (112, 135)) ('small JMJD', 'Var', (16, 26)) ('involved', 'Reg', (40, 48)) 9155 28291009 In this case report, we present the findings of I-123 MIBG single-photon emission computerized tomography (SPECT/CT) and In-111 SRS SPECT/CT in three members of a family with VHLS. ('I-123 MIBG', 'Chemical', '-', (48, 58)) ('VHLS', 'Disease', 'MESH:D006623', (175, 179)) ('MIBG', 'Gene', (54, 58)) ('I', 'Chemical', 'MESH:D007455', (0, 1)) ('VHLS', 'Disease', (175, 179)) ('I', 'Chemical', 'MESH:D007455', (121, 122)) ('I', 'Chemical', 'MESH:D007455', (55, 56)) ('I-123', 'Var', (48, 53)) ('I', 'Chemical', 'MESH:D007455', (48, 49)) 9162 28291009 Here in, we present the findings of I-123 MIBG single photon emission computerized tomography (SPECT/CT) and In-111 SRS SPECT/CT in three members of a family with VHLS. ('I', 'Chemical', 'MESH:D007455', (43, 44)) ('VHLS', 'Disease', (163, 167)) ('I', 'Chemical', 'MESH:D007455', (109, 110)) ('I', 'Chemical', 'MESH:D007455', (36, 37)) ('VHLS', 'Disease', 'MESH:D006623', (163, 167)) ('I-123 MIBG', 'Var', (36, 46)) ('I-123 MIBG', 'Chemical', '-', (36, 46)) 9174 28291009 Four years later, abdominal MRI revealed a mass between the liver and right adrenal gland (33x30x36 mm) and another one in the pancreatic tail (13x15x17 mm). ('33x30x36 mm', 'Var', (91, 102)) ('pancreatic', 'Disease', 'MESH:D010195', (127, 137)) ('pancreatic', 'Disease', (127, 137)) ('I', 'Chemical', 'MESH:D007455', (30, 31)) 9202 28291009 They demonstrated uptake of Ga-68 DOTA-NOC in all central nervous system and visceral tumors. ('uptake', 'MPA', (18, 24)) ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('Ga', 'Chemical', 'MESH:D005708', (28, 30)) ('NOC', 'Chemical', '-', (39, 42)) ('visceral tumors', 'Disease', 'MESH:D059265', (77, 92)) ('tumors', 'Phenotype', 'HP:0002664', (86, 92)) ('central nervous system', 'Disease', (50, 72)) ('visceral tumors', 'Disease', (77, 92)) ('Ga-68', 'Var', (28, 33)) 9457 26206689 The analytes were detected in multiple-reaction monitoring mode by using positive electrospray ionization: MN, transition m/z 180.1 165.1; NMN, m/z 166.1 134.1. ('ionization', 'Disease', 'MESH:D004194', (95, 105)) ('NMN', 'Chemical', 'MESH:D009647', (139, 142)) ('ionization', 'Disease', (95, 105)) ('m/z 166.1 134.1', 'Var', (144, 159)) 9482 26206689 Calibrators were prepared with five concentrations of each analyte (0.04, 0.4, 2.0, 10.0, and 50.0 nmol/L for MN and 0.08, 0.8, 4.0, 20.0, and 100.0 nmol/L for NMN) and were stored at -70C until use. ('NMN', 'Chemical', 'MESH:D009647', (160, 163)) ('0.04', 'Var', (68, 72)) ('0.08', 'Var', (117, 121)) 9490 26206689 The transitions of precursor ions to product ions (m/z 180.1 165.1, m/z 166.1 134.1, m/z 183.1 168.1, and m/z 169.0 137.1) were monitored for MN, NMN, d3-MN, and d3-NMN, respectively, with dwell time of 50 msec for each. ('m/z 166.1 134.1', 'Var', (68, 83)) ('NMN', 'Chemical', 'MESH:D009647', (165, 168)) ('m/z 180.1 165.1', 'Var', (51, 66)) ('m/z 183.1 168.1', 'Var', (85, 100)) ('d3-NMN', 'Var', (162, 168)) ('NMN', 'Chemical', 'MESH:D009647', (146, 149)) ('d3-MN', 'Var', (151, 156)) ('m/z 169.0 137.1', 'Var', (106, 121)) 9515 24625421 Succinate Dehydrogenase Deficiency Is Rare in Pituitary Adenomas Germline mutations in the succinate dehydrogenase genes (SDHA, SDHB, SDHC, and SDHD) are established as causes of pheochromocytoma/paraganglioma, renal carcinoma, and gastrointestinal stromal tumor. ('succinate dehydrogenase', 'Gene', (91, 114)) ('SDHB', 'Gene', (128, 132)) ('SDHC', 'Gene', (134, 138)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (179, 209)) ('SDHD', 'Gene', '6392', (144, 148)) ('SDHA', 'Gene', '6389', (122, 126)) ('Pituitary Adenomas', 'Phenotype', 'HP:0002893', (46, 64)) ('renal carcinoma', 'Disease', 'MESH:C538614', (211, 226)) ('Pituitary Adenomas', 'Disease', 'MESH:D010911', (46, 64)) ('renal carcinoma', 'Disease', (211, 226)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (232, 262)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (211, 226)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (232, 262)) ('SDHD', 'Gene', (144, 148)) ('succinate dehydrogenase', 'Gene', '6390', (91, 114)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (179, 195)) ('SDHC', 'Gene', '6391', (134, 138)) ('gastrointestinal stromal tumor', 'Disease', (232, 262)) ('paraganglioma', 'Phenotype', 'HP:0002668', (196, 209)) ('SDHB', 'Gene', '6390', (128, 132)) ('Dehydrogenase Deficiency', 'Disease', 'MESH:D005955', (10, 34)) ('tumor', 'Phenotype', 'HP:0002664', (257, 262)) ('pheochromocytoma/paraganglioma', 'Disease', (179, 209)) ('mutations', 'Var', (74, 83)) ('Pituitary Adenomas', 'Disease', (46, 64)) ('Dehydrogenase Deficiency', 'Disease', (10, 34)) ('carcinoma', 'Phenotype', 'HP:0030731', (217, 226)) ('causes', 'Reg', (169, 175)) ('SDHA', 'Gene', (122, 126)) 9517 24625421 We sought to determine the incidence of SDH mutation in pituitary adenomas. ('mutation', 'Var', (44, 52)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (56, 74)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (56, 74)) ('pituitary adenomas', 'Disease', (56, 74)) ('SDH', 'Gene', '6390', (40, 43)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (56, 73)) ('SDH', 'Gene', (40, 43)) 9519 24625421 In those patients with an abnormal pattern of staining, we then performed SDH mutation analysis on DNA extracted from paraffin-embedded tissue, fresh frozen tissue, and peripheral blood. ('SDH', 'Gene', (74, 77)) ('patients', 'Species', '9606', (9, 17)) ('mutation', 'Var', (78, 86)) ('paraffin', 'Chemical', 'MESH:D010232', (118, 126)) ('SDH', 'Gene', '6390', (74, 77)) 9521 24625421 Examination of paraffin-embedded and frozen tissues confirmed double-hit inactivating somatic SDHA mutations (c.725_736del and c.989_990insTA). ('c.989_990insTA', 'Mutation', 'c.989_990insTA', (127, 141)) ('SDHA', 'Gene', '6389', (94, 98)) ('c.725_736del', 'Var', (110, 122)) ('SDHA', 'Gene', (94, 98)) ('paraffin', 'Chemical', 'MESH:D010232', (15, 23)) ('c.725_736del', 'Mutation', 'c.725_736del', (110, 122)) ('c.989_990insTA', 'Var', (127, 141)) 9522 24625421 We conclude that, although pathogenic SDH mutation may occur in pituitary adenomas and can be identified by immunohistochemistry, it appears to be a very rare event and can occur in the absence of germline mutation. ('SDH', 'Gene', '6390', (38, 41)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (64, 81)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (64, 82)) ('pituitary adenomas', 'Disease', (64, 82)) ('occur', 'Reg', (55, 60)) ('mutation', 'Var', (42, 50)) ('SDH', 'Gene', (38, 41)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (64, 82)) ('pathogenic', 'Reg', (27, 37)) 9524 24625421 Unless suggested by family history and physical examination, it is difficult to justify screening for SDH mutations in pituitary adenomas. ('pituitary adenomas', 'Phenotype', 'HP:0002893', (119, 137)) ('SDH', 'Gene', (102, 105)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (119, 136)) ('pituitary adenomas', 'Disease', (119, 137)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (119, 137)) ('mutations', 'Var', (106, 115)) ('SDH', 'Gene', '6390', (102, 105)) 9525 24625421 Surveillance programs for patients with SDH mutation may be tailored to include the possibility of pituitary neoplasia; however, this is likely to be a low-yield strategy. ('mutation', 'Var', (44, 52)) ('patients', 'Species', '9606', (26, 34)) ('pituitary neoplasia', 'Disease', 'MESH:D009369', (99, 118)) ('SDH', 'Gene', '6390', (40, 43)) ('pituitary neoplasia', 'Disease', (99, 118)) ('pituitary neoplasia', 'Phenotype', 'HP:0040277', (99, 118)) ('neoplasia', 'Phenotype', 'HP:0002664', (109, 118)) ('SDH', 'Gene', (40, 43)) 9527 24625421 At least 5% are hereditary, and there are clear associations with multiple endocrine neoplasia type 1 (MEN1, associated with MEN1 mutation), familial isolated pituitary adenoma (often associated with AIP mutation), Carney complex (often associated with PRKAR1A mutation), and MEN4 (associated with CDKN1B mutation). ('familial isolated pituitary adenoma', 'Disease', (141, 176)) ('MEN1', 'Gene', '4221', (103, 107)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (75, 94)) ('multiple endocrine neoplasia type 1', 'Gene', (66, 101)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (159, 176)) ('multiple endocrine neoplasia type 1', 'Gene', '4221', (66, 101)) ('CDKN1B', 'Gene', (298, 304)) ('MEN1', 'Gene', (103, 107)) ('mutation', 'Var', (130, 138)) ('MEN1', 'Gene', '4221', (125, 129)) ('isolated pituitary adenoma', 'Phenotype', 'HP:0011761', (150, 176)) ('PRKAR1A', 'Gene', (253, 260)) ('associations', 'Interaction', (48, 60)) ('MEN1', 'Gene', (125, 129)) ('familial isolated pituitary adenoma', 'Disease', 'MESH:C566321', (141, 176)) ('CDKN1B', 'Gene', '1027', (298, 304)) ('MEN4', 'Gene', '1027', (276, 280)) ('PRKAR1A', 'Gene', '5573', (253, 260)) ('Carney complex', 'Disease', (215, 229)) ('associated', 'Reg', (184, 194)) ('neoplasia', 'Phenotype', 'HP:0002664', (85, 94)) ('MEN4', 'Gene', (276, 280)) 9530 24625421 These genes also function as tumor-suppressor genes, and germline SDH mutations are associated with a tumor syndrome characterized by pheochromocytoma/paraganglioma, a unique subtype of gastrointestinal stromal tumor (GIST) known as SDH-deficient GIST and a distinctive type of renal carcinoma. ('renal carcinoma', 'Phenotype', 'HP:0005584', (278, 293)) ('tumor syndrome', 'Disease', 'MESH:D009369', (102, 116)) ('SDH', 'Gene', (233, 236)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (186, 216)) ('SDH', 'Gene', (66, 69)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('SDH-deficient GIST', 'Disease', 'MESH:D046152', (233, 251)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (134, 150)) ('SDH-deficient GIST', 'Disease', (233, 251)) ('gastrointestinal stromal tumor', 'Disease', (186, 216)) ('carcinoma', 'Phenotype', 'HP:0030731', (284, 293)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('paraganglioma', 'Phenotype', 'HP:0002668', (151, 164)) ('associated', 'Reg', (84, 94)) ('pheochromocytoma/paraganglioma', 'Disease', (134, 164)) ('tumor-suppressor', 'Gene', '7248', (29, 45)) ('mutations', 'Var', (70, 79)) ('GIST', 'Phenotype', 'HP:0100723', (218, 222)) ('GIST', 'Phenotype', 'HP:0100723', (247, 251)) ('type of renal carcinoma', 'Disease', (270, 293)) ('tumor', 'Phenotype', 'HP:0002664', (211, 216)) ('type of renal carcinoma', 'Disease', 'MESH:C538614', (270, 293)) ('SDH', 'Gene', '6390', (233, 236)) ('SDH', 'Gene', '6390', (66, 69)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (134, 164)) ('tumor-suppressor', 'Gene', (29, 45)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (186, 216)) ('tumor syndrome', 'Disease', (102, 116)) 9531 24625421 It is noteworthy that loss of immunohistochemical (IHC) staining for SDHB has been consistently identified in pheochromocytomas/paragangliomas, GISTs, and renal carcinomas associated with SDH mutation regardless of which SDH subunit is mutated. ('renal carcinomas', 'Phenotype', 'HP:0005584', (155, 171)) ('loss', 'NegReg', (22, 26)) ('pheochromocytomas/paragangliomas', 'Disease', (110, 142)) ('paraganglioma', 'Phenotype', 'HP:0002668', (128, 141)) ('paragangliomas', 'Phenotype', 'HP:0002668', (128, 142)) ('SDHB', 'Gene', '6390', (69, 73)) ('carcinomas', 'Phenotype', 'HP:0030731', (161, 171)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (155, 170)) ('GISTs', 'Disease', (144, 149)) ('mutation', 'Var', (192, 200)) ('SDH', 'Gene', '6390', (221, 224)) ('SDH', 'Gene', '6390', (188, 191)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (110, 142)) ('SDHB', 'Gene', (69, 73)) ('SDH', 'Gene', '6390', (69, 72)) ('associated', 'Reg', (172, 182)) ('renal carcinomas', 'Disease', 'MESH:C538614', (155, 171)) ('SDH', 'Gene', (221, 224)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (110, 127)) ('SDH', 'Gene', (188, 191)) ('GIST', 'Phenotype', 'HP:0100723', (144, 148)) ('SDH', 'Gene', (69, 72)) ('carcinoma', 'Phenotype', 'HP:0030731', (161, 170)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (110, 126)) ('renal carcinomas', 'Disease', (155, 171)) 9532 24625421 In addition to loss of SDHB staining, negative staining for SDHA also occurs in pheochromocytomas/paragangliomas and GISTs associated with SDHA mutation. ('paragangliomas', 'Phenotype', 'HP:0002668', (98, 112)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (80, 112)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('SDHA', 'Gene', '6389', (139, 143)) ('SDHB', 'Gene', '6390', (23, 27)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (80, 97)) ('SDHA', 'Gene', '6389', (60, 64)) ('mutation', 'Var', (144, 152)) ('SDHB', 'Gene', (23, 27)) ('SDHA', 'Gene', (139, 143)) ('GIST', 'Phenotype', 'HP:0100723', (117, 121)) ('pheochromocytomas/paragangliomas', 'Disease', (80, 112)) ('SDHA', 'Gene', (60, 64)) ('paraganglioma', 'Phenotype', 'HP:0002668', (98, 111)) 9533 24625421 To date, SDHA mutation has not been reported in association in with renal carcinoma. ('renal carcinoma', 'Disease', 'MESH:C538614', (68, 83)) ('SDHA', 'Gene', '6389', (9, 13)) ('renal carcinoma', 'Disease', (68, 83)) ('carcinoma', 'Phenotype', 'HP:0030731', (74, 83)) ('mutation', 'Var', (14, 22)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (68, 83)) ('SDHA', 'Gene', (9, 13)) 9534 24625421 Tumors that show negative staining for SDHB are known as succinate dehydrogenase deficient, and IHC for SDHB and SDHA is used routinely to screen patients presenting with compatible tumors for germline SDH mutation. ('tumors', 'Phenotype', 'HP:0002664', (182, 188)) ('SDHB', 'Gene', '6390', (39, 43)) ('SDH', 'Gene', '6390', (104, 107)) ('SDHA', 'Gene', '6389', (113, 117)) ('SDH', 'Gene', (202, 205)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) ('succinate dehydrogenase', 'Gene', (57, 80)) ('SDH', 'Gene', (113, 116)) ('tumors', 'Disease', (182, 188)) ('SDHB', 'Gene', (39, 43)) ('Tumors', 'Disease', (0, 6)) ('SDH', 'Gene', (104, 107)) ('SDH', 'Gene', '6390', (39, 42)) ('patients', 'Species', '9606', (146, 154)) ('deficient', 'NegReg', (81, 90)) ('tumors', 'Disease', 'MESH:D009369', (182, 188)) ('mutation', 'Var', (206, 214)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('SDHB', 'Gene', '6390', (104, 108)) ('succinate dehydrogenase', 'Gene', '6390', (57, 80)) ('SDH', 'Gene', '6390', (202, 205)) ('SDH', 'Gene', (39, 42)) ('SDH', 'Gene', '6390', (113, 116)) ('SDHA', 'Gene', (113, 117)) ('SDHB', 'Gene', (104, 108)) 9535 24625421 There is now emerging evidence that pituitary adenomas may also be associated with SDH mutation. ('pituitary adenoma', 'Phenotype', 'HP:0002893', (36, 53)) ('SDH', 'Gene', '6390', (83, 86)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (36, 54)) ('associated', 'Reg', (67, 77)) ('SDH', 'Gene', (83, 86)) ('mutation', 'Var', (87, 95)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (36, 54)) ('pituitary adenomas', 'Disease', (36, 54)) 9536 24625421 Briefly, 35 cases of coexistent pheochromocytoma/paraganglioma and pituitary adenoma in individuals or kindreds have been reported, and second-hit inactivation has been demonstrated by either loss of heterozygosity or acquired mutation in 2 pituitary adenomas arising in the setting of germline SDH mutation. ('pituitary adenomas', 'Disease', 'MESH:D010911', (241, 259)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (32, 62)) ('loss of heterozygosity', 'Var', (192, 214)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (241, 258)) ('SDH', 'Gene', (295, 298)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (32, 48)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (241, 259)) ('pituitary adenoma', 'Disease', (67, 84)) ('pituitary adenomas', 'Disease', (241, 259)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (67, 84)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (241, 258)) ('mutation', 'Var', (299, 307)) ('paraganglioma', 'Phenotype', 'HP:0002668', (49, 62)) ('SDH', 'Gene', '6390', (295, 298)) ('pheochromocytoma/paraganglioma', 'Disease', (32, 62)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (67, 84)) 9537 24625421 However, to date, the evidence linking SDH mutation and pituitary neoplasia has been based on case reports, and the incidence and clinical significance of SDH mutation in pituitary adenomas is unknown. ('pituitary adenomas', 'Disease', (171, 189)) ('SDH', 'Gene', (39, 42)) ('SDH', 'Gene', '6390', (155, 158)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (171, 188)) ('pituitary neoplasia', 'Phenotype', 'HP:0040277', (56, 75)) ('mutation', 'Var', (43, 51)) ('neoplasia', 'Phenotype', 'HP:0002664', (66, 75)) ('pituitary neoplasia', 'Disease', 'MESH:D009369', (56, 75)) ('pituitary neoplasia', 'Disease', (56, 75)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (171, 189)) ('SDH', 'Gene', (155, 158)) ('SDH', 'Gene', '6390', (39, 42)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (171, 189)) 9538 24625421 In this study, we sought to estimate the incidence and clinicopathologic associations of SDH mutation in pituitary adenomas. ('SDH', 'Gene', (89, 92)) ('pituitary adenomas', 'Disease', (105, 123)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (105, 123)) ('SDH', 'Gene', '6390', (89, 92)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (105, 123)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (105, 122)) ('mutation', 'Var', (93, 101)) 9564 24625421 In both the FFPE and frozen tissue the same 2 inactivating mutations were identified:a deletion in exon 6 (c.725_736del) and an insertion in exon 8 (c.989_990insTA). ('c.989_990insTA', 'Mutation', 'c.989_990insTA', (149, 163)) ('c.725_736del', 'Mutation', 'c.725_736del', (107, 119)) ('c.989_990insTA', 'Var', (149, 163)) ('c.725_736del', 'Var', (107, 119)) 9567 24625421 There have been 8 previously reported cases of pituitary adenoma occurring in association with confirmed germline SDH mutation, comprising 1 adenoma associated with mutation of SDHA, 3 with SDHB mutation, 2 with SDHC mutation, and 2 with SDHD mutation (summarized in Table 1). ('SDHB', 'Gene', '6390', (190, 194)) ('SDHC', 'Gene', (212, 216)) ('SDH', 'Gene', '6390', (238, 241)) ('SDH', 'Gene', (114, 117)) ('SDHA', 'Gene', (177, 181)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (47, 64)) ('SDH', 'Gene', (177, 180)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (47, 64)) ('SDHD', 'Gene', '6392', (238, 242)) ('adenoma', 'Disease', (57, 64)) ('SDHB', 'Gene', (190, 194)) ('SDHA', 'Gene', '6389', (177, 181)) ('associated', 'Reg', (149, 159)) ('pituitary adenoma', 'Disease', (47, 64)) ('SDH', 'Gene', '6390', (190, 193)) ('adenoma', 'Disease', (141, 148)) ('SDH', 'Gene', (238, 241)) ('adenoma', 'Disease', 'MESH:D000236', (57, 64)) ('SDH', 'Gene', '6390', (212, 215)) ('SDHD', 'Gene', (238, 242)) ('SDHC', 'Gene', '6391', (212, 216)) ('adenoma', 'Disease', 'MESH:D000236', (141, 148)) ('mutation', 'Var', (118, 126)) ('SDH', 'Gene', (190, 193)) ('SDH', 'Gene', '6390', (114, 117)) ('SDH', 'Gene', '6390', (177, 180)) ('SDH', 'Gene', (212, 215)) ('mutation', 'Var', (165, 173)) 9570 24625421 Including this case, of the 9 pituitary adenomas reported in association with confirmed SDH mutation, the mean age has been 45 years (range, 30 to 62 y), and 6 have occurred in men. ('SDH', 'Gene', (88, 91)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (30, 48)) ('mutation', 'Var', (92, 100)) ('pituitary adenomas', 'Disease', (30, 48)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (30, 47)) ('men', 'Species', '9606', (177, 180)) ('SDH', 'Gene', '6390', (88, 91)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (30, 48)) 9572 24625421 In addition, the clinically nonfunctioning pituitary macroadenoma arising in the setting of germline SDHA mutation, which we recently described, also demonstrated positive IHC staining for prolactin (previously unreported data). ('pituitary macroadenoma', 'Disease', (43, 65)) ('SDHA', 'Gene', '6389', (101, 105)) ('pituitary macroadenoma', 'Disease', 'MESH:D010900', (43, 65)) ('mutation', 'Var', (106, 114)) ('SDHA', 'Gene', (101, 105)) ('prolactin', 'Gene', (189, 198)) ('prolactin', 'Gene', '5617', (189, 198)) ('nonfunctioning pituitary macroadenoma', 'Phenotype', 'HP:0011761', (28, 65)) 9578 24625421 Furthermore, germline SDH mutation presenting with pituitary neoplasia is extremely rare (none in 309 consecutive adenomas). ('adenomas', 'Disease', (114, 122)) ('pituitary neoplasia', 'Phenotype', 'HP:0040277', (51, 70)) ('mutation', 'Var', (26, 34)) ('pituitary neoplasia', 'Disease', (51, 70)) ('SDH', 'Gene', '6390', (22, 25)) ('neoplasia', 'Phenotype', 'HP:0002664', (61, 70)) ('adenomas', 'Disease', 'MESH:D000236', (114, 122)) ('SDH', 'Gene', (22, 25)) ('pituitary neoplasia', 'Disease', 'MESH:D009369', (51, 70)) 9586 24625421 In the interim, we recommend that the possibility of pituitary disease, particularly associated with hyperprolactinemia, be specifically considered in the annual history and physical examination for patients with known SDH mutation. ('SDH', 'Gene', '6390', (219, 222)) ('men', 'Species', '9606', (24, 27)) ('hyperprolactinemia', 'Disease', (101, 119)) ('pituitary disease', 'Disease', 'MESH:D010900', (53, 70)) ('pituitary disease', 'Phenotype', 'HP:0011747', (53, 70)) ('SDH', 'Gene', (219, 222)) ('hyperprolactinemia', 'Phenotype', 'HP:0000870', (101, 119)) ('mutation', 'Var', (223, 231)) ('pituitary disease', 'Disease', (53, 70)) ('patients', 'Species', '9606', (199, 207)) ('hyperprolactinemia', 'Disease', 'MESH:D002640', (101, 119)) ('associated', 'Reg', (85, 95)) 9587 24625421 The occurrence of 2 somatic SDHA mutations in the absence of a germline mutation is very unusual. ('SDHA', 'Gene', '6389', (28, 32)) ('mutations', 'Var', (33, 42)) ('SDHA', 'Gene', (28, 32)) 9589 24625421 In fact, we are only aware of 2 reports of somatic mutation in SDH occurring in pheochromocytoma/paraganglioma (1 SDHB and 1 SDHD) in the absence of germline mutation and none in GIST or renal cancer. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('SDHB', 'Gene', (114, 118)) ('renal cancer', 'Disease', (187, 199)) ('mutation', 'Var', (51, 59)) ('cancer', 'Phenotype', 'HP:0002664', (193, 199)) ('SDH', 'Gene', (114, 117)) ('renal cancer', 'Phenotype', 'HP:0009726', (187, 199)) ('SDH', 'Gene', '6390', (63, 66)) ('GIST', 'Phenotype', 'HP:0100723', (179, 183)) ('pheochromocytoma/paraganglioma', 'Disease', (80, 110)) ('renal cancer', 'Disease', 'MESH:D007680', (187, 199)) ('SDHD', 'Gene', '6392', (125, 129)) ('SDH', 'Gene', '6390', (125, 128)) ('SDH', 'Gene', (63, 66)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (80, 110)) ('SDHD', 'Gene', (125, 129)) ('SDH', 'Gene', '6390', (114, 117)) ('SDHB', 'Gene', '6390', (114, 118)) ('paraganglioma', 'Phenotype', 'HP:0002668', (97, 110)) ('SDH', 'Gene', (125, 128)) 9590 24625421 Although the identification of SDH mutation in a tumor is usually considered prima facie evidence of germline SDH mutation, we caution that this is not always the case and that inactivation of the SDH genes can occur as a truly somatic event. ('tumor', 'Disease', 'MESH:D009369', (49, 54)) ('SDH', 'Gene', '6390', (31, 34)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('SDH', 'Gene', '6390', (110, 113)) ('tumor', 'Disease', (49, 54)) ('SDH', 'Gene', '6390', (197, 200)) ('SDH', 'Gene', (31, 34)) ('SDH', 'Gene', (110, 113)) ('mutation', 'Var', (35, 43)) ('SDH', 'Gene', (197, 200)) 9592 24625421 In conclusion, it appears that pituitary adenomas are a legitimate albeit very rare component of the hereditary syndromes associated with SDH mutation, and therefore the possibility of pituitary neoplasia should be considered clinically in patients with SDH mutation who are under surveillance. ('component of the hereditary syndromes', 'Disease', 'MESH:D009386', (84, 121)) ('pituitary neoplasia', 'Disease', (185, 204)) ('pituitary neoplasia', 'Phenotype', 'HP:0040277', (185, 204)) ('SDH', 'Gene', '6390', (254, 257)) ('SDH', 'Gene', '6390', (138, 141)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (31, 49)) ('neoplasia', 'Phenotype', 'HP:0002664', (195, 204)) ('pituitary adenomas', 'Disease', (31, 49)) ('SDH', 'Gene', (254, 257)) ('SDH', 'Gene', (138, 141)) ('patients', 'Species', '9606', (240, 248)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (31, 48)) ('mutation', 'Var', (142, 150)) ('component of the hereditary syndromes', 'Disease', (84, 121)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (31, 49)) ('pituitary neoplasia', 'Disease', 'MESH:D009369', (185, 204)) 9617 22584715 Owing to the need for genetic association studies for unequivocal cases of MEN type 2, higher risk mutations in codon 918 (the classic MEN2B mutation; American Thyroid Association/ATA D), codon 634 (the classic MEN2A mutation; ATA C) and codons 609, 611, 618, 620, and 630 (ATA B) were overrepresented in the International MEN2 Consortium. ('ATA C', 'Gene', '6375', (227, 232)) ('MEN', 'Species', '9606', (75, 78)) ('MEN', 'Species', '9606', (211, 214)) ('codon 634', 'Var', (188, 197)) ('MEN2B', 'Gene', (135, 140)) ('codon', 'Gene', (112, 117)) ('MEN', 'Species', '9606', (135, 138)) ('mutations', 'Var', (99, 108)) ('MEN2B', 'Gene', '5979', (135, 140)) ('MEN', 'Species', '9606', (323, 326)) ('MEN2A', 'Gene', '5979', (211, 216)) ('ATA C', 'Gene', (227, 232)) ('higher risk', 'PosReg', (87, 98)) ('MEN2A', 'Gene', (211, 216)) 9618 22584715 The subsequent scanning of the RET proto-oncogene for additional mutations identified more RET mutations in codons 768, 790, 791, 804, and 891 between 1995 and 1998 -. ('RET', 'Gene', (91, 94)) ('RET', 'Gene', '5979', (31, 34)) ('RET', 'Gene', (31, 34)) ('RET', 'Gene', '5979', (91, 94)) ('mutations in codons 768', 'Var', (95, 118)) 9621 22584715 The constitutive (i.e., genetically encoded) activation of the mutated RET receptor protein is believed to cause, in decreasing frequency, hyperplasia of the parafollicular C-cells, adrenal medullary cells, and parathyroid chief cells. ('mutated', 'Var', (63, 70)) ('hyperplasia', 'Disease', (139, 150)) ('cause', 'Reg', (107, 112)) ('RET', 'Gene', '5979', (71, 74)) ('activation', 'PosReg', (45, 55)) ('hyperplasia', 'Disease', 'MESH:D006965', (139, 150)) ('RET', 'Gene', (71, 74)) 9622 22584715 A second mutation in one of these neuroendocrine cells ("second hit") is thought to cause MTC (C-cell cancer), pheochromocytoma, and primary hyperparathyroidism. ('mutation', 'Var', (9, 17)) ('pheochromocytoma', 'Disease', (111, 127)) ('cancer', 'Phenotype', 'HP:0002664', (102, 108)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (111, 127)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (111, 127)) ('primary hyperparathyroidism', 'Disease', 'MESH:D049950', (133, 160)) ('C-cell cancer', 'Disease', (95, 108)) ('primary hyperparathyroidism', 'Phenotype', 'HP:0008200', (133, 160)) ('primary hyperparathyroidism', 'Disease', (133, 160)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (141, 160)) ('C-cell cancer', 'Disease', 'MESH:D020216', (95, 108)) ('cause', 'Reg', (84, 89)) 9623 22584715 Because the acquisition of somatic mutations by these cells reflects the play of chance, the development of the various MEN2 components can vary tremendously even among members of the same family, compromising predictions regarding the age by which the various MEN2 components will have developed. ('MEN', 'Species', '9606', (120, 123)) ('compromising', 'NegReg', (197, 209)) ('MEN', 'Species', '9606', (261, 264)) ('mutations', 'Var', (35, 44)) 9624 22584715 As a rule, the weaker the transforming activity of the inherited RET mutation, the more variable will be the clinical presentation (phenotype) of the various MEN2 components,,, with steep gradients from highest risk ATA-D to very high-risk ATA-C, high-risk ATA-B, and lowest risk ATA-A mutations (Table 1). ('weaker', 'NegReg', (15, 21)) ('RET', 'Gene', '5979', (65, 68)) ('MEN', 'Species', '9606', (158, 161)) ('ATA-C', 'Gene', (240, 245)) ('RET', 'Gene', (65, 68)) ('mutation', 'Var', (69, 77)) ('ATA-C', 'Gene', '6375', (240, 245)) ('transforming activity', 'MPA', (26, 47)) 9625 22584715 A systematic review of the literature,-, focused on the youngest carrier age at which a given MEN2-related tumor was ever reported, yielded the following chart of earliest tumor development (Table 1): medullary thyroid cancer as early as age 2 months (carriers of mutations in codon 918), 10 months (carriers of mutations in codon 634), 12 months (carriers of mutations in codon 630), 4-7 years (carriers of mutations in codons 609, 611, 618 and 620) and 9-21 years (carriers of mutations in codons 533, 768, 790, 791, 804 and 891); pheochromocytoma as early as age 12 years (carriers of mutations in codon 918 and 634), 19-30 years (carriers of mutations in codons 609, 611, 618, and 620), and 28-59 years (carriers of mutations in codons 768, 790, 791, 804, and 891); primary hyperparathyroidism as early as 5 years (carriers of mutations in codon 634), 34-41 years (carriers of mutations in codons 609, 611, 618, and 620), and 38-54 years (carriers of mutations in codons 533, 768, 790, 791, 804, and 891), but for unknown reasons, never in MEN2B patients (carriers of mutations in codon 918). ('MEN2B', 'Gene', (1044, 1049)) ('tumor', 'Disease', (107, 112)) ('mutations', 'Var', (955, 964)) ('tumor', 'Disease', (172, 177)) ('MEN2B', 'Gene', '5979', (1044, 1049)) ('thyroid cancer', 'Disease', (211, 225)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) ('tumor', 'Disease', 'MESH:D009369', (172, 177)) ('primary hyperparathyroidism', 'Disease', (770, 797)) ('mutations', 'Var', (881, 890)) ('MEN', 'Species', '9606', (94, 97)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (201, 225)) ('mutations', 'Var', (831, 840)) ('thyroid cancer', 'Disease', 'MESH:D013964', (211, 225)) ('primary hyperparathyroidism', 'Disease', 'MESH:D049950', (770, 797)) ('tumor', 'Phenotype', 'HP:0002664', (172, 177)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (533, 549)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (211, 225)) ('patients', 'Species', '9606', (1050, 1058)) ('pheochromocytoma', 'Disease', (533, 549)) ('primary hyperparathyroidism', 'Phenotype', 'HP:0008200', (770, 797)) ('cancer', 'Phenotype', 'HP:0002664', (219, 225)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (533, 549)) ('MEN', 'Species', '9606', (1044, 1047)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (778, 797)) 9626 22584715 With more data set to be forthcoming, the current ATA assignments of the rare RET mutations in codon 630 (currently ATA-B) and 883 (currently ATA D) may need to be revised. ('RET', 'Gene', (78, 81)) ('codon 630', 'Gene', (95, 104)) ('mutations in', 'Var', (82, 94)) ('RET', 'Gene', '5979', (78, 81)) 9628 22584715 Barring rare exceptions, lymph node metastases have not yet developed before age 2 years (carriers of mutations in codon 918), not before age 5 years (carriers of mutations in codon 634) and 15 years (carriers of mutations in codons 630) and not before age 20 years in the remaining RET carriers. ('RET', 'Gene', (283, 286)) ('mutations in codon 634', 'Var', (163, 185)) ('mutations in codon 918', 'Var', (102, 124)) ('RET', 'Gene', '5979', (283, 286)) ('lymph node metastases', 'Disease', 'MESH:D009362', (25, 46)) ('lymph node metastases', 'Disease', (25, 46)) 9632 22584715 Although the respective RET mutation sets the stage for tumor development, defining a time corridor, this corridor often is too wide to be useful for individual decisions with regard to the timing of prophylactic thyroidectomy. ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('RET', 'Gene', '5979', (24, 27)) ('tumor', 'Disease', (56, 61)) ('mutation', 'Var', (28, 36)) ('RET', 'Gene', (24, 27)) ('tumor', 'Disease', 'MESH:D009369', (56, 61)) 9646 22584715 This disruption delayed the diagnosis of hereditary MTC in the second index patient by 7 years in the C611F family (Figure 2a) and 19 years in the C620S family (Figure 2b). ('C620S', 'Var', (147, 152)) ('C611F', 'Mutation', 'rs377767397', (102, 107)) ('hereditary MTC', 'Disease', (41, 55)) ('C611F', 'Var', (102, 107)) ('patient', 'Species', '9606', (76, 83)) ('delayed', 'NegReg', (16, 23)) ('C620S', 'Mutation', 'rs77316810', (147, 152)) 9650 22584715 DNA-based screening may occasionally uncover previously unknown RET sequence variants dubbed "variants of unknown significance" (VUS), which may represent harmless polymorphisms or pathogenic mutations. ('RET', 'Gene', (64, 67)) ('variants', 'Var', (77, 85)) ('RET', 'Gene', '5979', (64, 67)) 9651 22584715 In this setting, functional characterization of RET mutant cells in vitro has been harnessed to generate ancillary evidence regarding the pathogenicity of unknown sequence variants in comparison with established RET mutations -. ('RET', 'Gene', '5979', (212, 215)) ('mutant', 'Var', (52, 58)) ('variants', 'Var', (172, 180)) ('RET', 'Gene', '5979', (48, 51)) ('RET', 'Gene', (212, 215)) ('RET', 'Gene', (48, 51)) 9661 22584723 Recently, PHEO was reported to be highly prevalent in MEN2A patients harboring the double 634/791 mutation in the RET proto-oncogene. ('MEN2A', 'Gene', (54, 59)) ('RET', 'Gene', '5979', (114, 117)) ('patients', 'Species', '9606', (60, 68)) ('PHEO', 'Disease', (10, 14)) ('RET', 'Gene', (114, 117)) ('double 634/791', 'Var', (83, 97)) ('MEN2A', 'Gene', '5979', (54, 59)) ('prevalent', 'Reg', (41, 50)) ('PHEO', 'Phenotype', 'HP:0002666', (10, 14)) 9763 33842149 Mutations of the gene, which converts into a coded form the succinate dehydrogenase (SDH) enzymes SDHD, SDHA, SDHB, and SDHC, are known to cause familial head and neck paragangliomas. ('succinate dehydrogenase', 'Gene', (60, 83)) ('SDH', 'Gene', '6390', (104, 107)) ('SDHA', 'Gene', (104, 108)) ('paraganglioma', 'Phenotype', 'HP:0002668', (168, 181)) ('paragangliomas', 'Phenotype', 'HP:0002668', (168, 182)) ('SDHD', 'Gene', (98, 102)) ('SDHA', 'Gene', '6389', (104, 108)) ('SDH', 'Gene', '6390', (120, 123)) ('SDHB', 'Gene', (110, 114)) ('SDH', 'Gene', (98, 101)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (154, 182)) ('SDH', 'Gene', '6390', (110, 113)) ('SDHC', 'Gene', '6391', (120, 124)) ('familial head and neck paragangliomas', 'Disease', 'MESH:D006258', (145, 182)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', (104, 107)) ('SDH', 'Gene', '6390', (85, 88)) ('succinate dehydrogenase', 'Gene', '6390', (60, 83)) ('SDH', 'Gene', (120, 123)) ('SDH', 'Gene', (110, 113)) ('cause', 'Reg', (139, 144)) ('SDHC', 'Gene', (120, 124)) ('SDH', 'Gene', (85, 88)) ('SDHD', 'Gene', '6392', (98, 102)) ('SDHB', 'Gene', '6390', (110, 114)) ('SDH', 'Gene', '6390', (98, 101)) 9764 33842149 Mutations in the SDHB are the reason for familial adrenal pheochromocytoma and extra-adrenal paraganglioma in the thorax and abdomen region. ('extra-adrenal paraganglioma', 'Disease', (79, 106)) ('familial adrenal pheochromocytoma', 'Disease', 'MESH:C531777', (41, 74)) ('reason', 'Reg', (30, 36)) ('extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (79, 106)) ('familial adrenal pheochromocytoma', 'Disease', (41, 74)) ('SDHB', 'Gene', '6390', (17, 21)) ('Mutations', 'Var', (0, 9)) ('paraganglioma', 'Phenotype', 'HP:0002668', (93, 106)) ('SDHB', 'Gene', (17, 21)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (50, 74)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (58, 74)) 9778 33842149 Genetic testing revealed no relationship with any SDH mutations. ('SDH', 'Gene', '6390', (50, 53)) ('mutations', 'Var', (54, 63)) ('SDH', 'Gene', (50, 53)) 9783 33842149 Immunohistochemistry revealed the positivity of neoplastic cells (Figure 5) in synaptophysin, chromogranin (Figure 6), and S100 (Figure 7), whereas the markers pankeratin and CD10 were negative. ('chromogranin', 'Protein', (94, 106)) ('S100', 'Gene', (123, 127)) ('positivity', 'Var', (34, 44)) ('S100', 'Gene', '6271', (123, 127)) ('synaptophysin', 'Gene', (79, 92)) ('CD10', 'Gene', '4311', (175, 179)) ('CD10', 'Gene', (175, 179)) ('synaptophysin', 'Gene', '6855', (79, 92)) 9797 33842149 The entity of SDHB mutations should alert surgeons to proceed with early and extensive surgery, a fact of paramount importance for patient's safety and overall survival. ('SDHB', 'Gene', '6390', (14, 18)) ('SDHB', 'Gene', (14, 18)) ('mutations', 'Var', (19, 28)) ('patient', 'Species', '9606', (131, 138)) 9798 33842149 Unfortunately, tumors related to SDH mutations display more aggressive behavior. ('tumors', 'Disease', (15, 21)) ('aggressive behavior', 'CPA', (60, 79)) ('SDH', 'Gene', (33, 36)) ('tumors', 'Phenotype', 'HP:0002664', (15, 21)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (60, 79)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('SDH', 'Gene', '6390', (33, 36)) ('mutations', 'Var', (37, 46)) ('tumors', 'Disease', 'MESH:D009369', (15, 21)) 9824 32342607 The pre-surgical evaluation of this colon carcinoma was type 2, T3N0M0, Stage IIA. ('colon carcinoma', 'Disease', 'MESH:D003110', (36, 51)) ('T3N0M0', 'Var', (64, 70)) ('colon carcinoma', 'Disease', (36, 51)) ('carcinoma', 'Phenotype', 'HP:0030731', (42, 51)) 9843 32326947 In addition to their common tumoral manifestations, many of these diseases present clinical affection of bone tissues and/or mineral metabolism, both as secondary complications of primary tumors and as primary defects due to genetic mutation. ('tumors', 'Phenotype', 'HP:0002664', (188, 194)) ('affection', 'Reg', (92, 101)) ('genetic mutation', 'Var', (225, 241)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) ('bone tissues', 'CPA', (105, 117)) ('primary tumors', 'Disease', (180, 194)) ('tumoral', 'Disease', (28, 35)) ('tumoral', 'Disease', 'MESH:D009369', (28, 35)) ('tumor', 'Phenotype', 'HP:0002664', (188, 193)) ('primary tumors', 'Disease', 'MESH:D001932', (180, 194)) ('mineral', 'CPA', (125, 132)) 9845 32326947 In addition to their common manifestations, almost all inherited endocrine tumor syndromes present features of bone and mineral metabolism, either as secondary complications of primary tumors or as a primary consequence of gene mutation. ('primary tumors', 'Disease', 'MESH:D001932', (177, 191)) ('tumors', 'Phenotype', 'HP:0002664', (185, 191)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (65, 80)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('primary tumors', 'Disease', (177, 191)) ('gene mutation', 'Var', (223, 236)) ('endocrine tumor syndromes', 'Disease', (65, 90)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('endocrine tumor syndromes', 'Disease', 'MESH:D004701', (65, 90)) 9881 32326947 MEN2 is caused by germinal heterozygote activating point mutations of the proto-oncogene RET (REarranged during Transfection; 10q11.21) (Table 1], encoding the homonym trans-membrane tyrosine kinase receptor (RET) responsible for positive regulation of cell growth. ('MEN2', 'Disease', (0, 4)) ('activating', 'PosReg', (40, 50)) ('RET', 'Gene', (209, 212)) ('RET', 'Gene', (89, 92)) ('RET', 'Gene', '5979', (209, 212)) ('caused', 'Reg', (8, 14)) ('MEN', 'Species', '9606', (0, 3)) ('point mutations', 'Var', (51, 66)) ('REarranged during Transfection', 'Gene', (94, 124)) ('RET', 'Gene', '5979', (89, 92)) ('REarranged during Transfection', 'Gene', '5979', (94, 124)) 9882 32326947 MEN2A patients have mutations at codons 634 (85% of cases), 609, 611, 618 and 620. ('MEN2A', 'Gene', '5979', (0, 5)) ('patients', 'Species', '9606', (6, 14)) ('mutations', 'Var', (20, 29)) ('MEN2A', 'Gene', (0, 5)) 9883 32326947 Over 90% of MEN2B patients present the de novo M918T mutation; mutation at codon 883 (A883F) affects about 5% of MEN2B patients. ('MEN2B', 'Gene', (113, 118)) ('MEN2B', 'Gene', '5979', (113, 118)) ('patients', 'Species', '9606', (119, 127)) ('A883F', 'Mutation', 'rs377767429', (86, 91)) ('M918T', 'Mutation', 'rs74799832', (47, 52)) ('patients', 'Species', '9606', (18, 26)) ('MEN2B', 'Gene', (12, 17)) ('M918T', 'Var', (47, 52)) ('MEN2B', 'Gene', '5979', (12, 17)) 9888 32326947 PTH normalization, following surgical removal of parathyroid adenoma, reverts the bone mass loss. ('parathyroid adenoma', 'Disease', (49, 68)) ('parathyroid adenoma', 'Phenotype', 'HP:0002897', (49, 68)) ('PTH', 'Gene', (0, 3)) ('parathyroid adenoma', 'Disease', 'MESH:D010282', (49, 68)) ('PTH', 'Gene', '5741', (0, 3)) ('bone mass loss', 'CPA', (82, 96)) ('normalization', 'Var', (4, 17)) ('reverts', 'NegReg', (70, 77)) 9894 32326947 Skeletal anomalies, manifesting in MEN2B form, can be ascribed to the specific RET mutations, affecting the intracellular domain of the protein and responsible for MEN2B phenotype. ('mutations', 'Var', (83, 92)) ('RET', 'Gene', '5979', (79, 82)) ('MEN2B', 'Gene', (164, 169)) ('Skeletal anomalies', 'Disease', 'MESH:C535534', (0, 18)) ('Skeletal anomalies', 'Phenotype', 'HP:0000924', (0, 18)) ('MEN2B', 'Gene', '5979', (164, 169)) ('Skeletal anomalies', 'Disease', (0, 18)) ('MEN2B', 'Gene', (35, 40)) ('RET', 'Gene', (79, 82)) ('MEN2B', 'Gene', '5979', (35, 40)) ('affecting', 'Reg', (94, 103)) ('intracellular domain of the protein', 'MPA', (108, 143)) ('responsible', 'Reg', (148, 159)) 9899 32326947 Chm1 mutant mice showed increased bone deposition. ('Chm1', 'Gene', '11061', (0, 4)) ('bone deposition', 'CPA', (34, 49)) ('mutant', 'Var', (5, 11)) ('Chm1', 'Gene', (0, 4)) ('mice', 'Species', '10090', (12, 16)) ('increased', 'PosReg', (24, 33)) 9900 32326947 Altered expression of CHM1 is suspected to alter the bone growth plate, leading to the skeletal abnormalities observed in MEN2B patients. ('leading to', 'Reg', (72, 82)) ('MEN2B', 'Gene', '5979', (122, 127)) ('alter', 'Reg', (43, 48)) ('skeletal abnormalities', 'Disease', (87, 109)) ('Altered', 'Var', (0, 7)) ('skeletal abnormalities', 'Phenotype', 'HP:0000924', (87, 109)) ('patients', 'Species', '9606', (128, 136)) ('CHM1', 'Gene', '11061', (22, 26)) ('skeletal abnormalities', 'Disease', 'MESH:C538496', (87, 109)) ('CHM1', 'Gene', (22, 26)) ('MEN2B', 'Gene', (122, 127)) 9901 32326947 Activating mutations of the intracellular domain of RET could also be suspected to be responsible for the overexpression, in MEN2, of stanniocalcin-1 (STC1), a protein involved in the regulation of bone metabolism, by acting as an autocrine/paracrine regulator of calcium and phosphate homeostasis, with a role in early skeletal patterning and joint formation,. ('mutations', 'Var', (11, 20)) ('Activating', 'PosReg', (0, 10)) ('STC1', 'Gene', (151, 155)) ('phosphate', 'Chemical', 'MESH:D010710', (276, 285)) ('MEN', 'Species', '9606', (125, 128)) ('RET', 'Gene', '5979', (52, 55)) ('stanniocalcin-1', 'Gene', (134, 149)) ('overexpression', 'PosReg', (106, 120)) ('stanniocalcin-1', 'Gene', '6781', (134, 149)) ('RET', 'Gene', (52, 55)) ('STC1', 'Gene', '6781', (151, 155)) ('calcium', 'Chemical', 'MESH:D002118', (264, 271)) 9905 32326947 MEN4 is caused by inactivating heterozygous mutations of the CDKN1B tumor suppressor gene (12p13.1) (Table 1], encoding the p27kip1 protein, a CDK2 cyclin-dependent kinase inhibitor, which acts as a negative regulator of cell cycle progression at G1-S checkpoint. ('tumor', 'Disease', (68, 73)) ('caused by', 'Reg', (8, 17)) ('MEN4', 'Gene', '1027', (0, 4)) ('CDKN1B', 'Gene', '1027', (61, 67)) ('MEN4', 'Gene', (0, 4)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('CDKN1B', 'Gene', (61, 67)) ('inactivating heterozygous mutations', 'Var', (18, 53)) 9907 32326947 Therapeutic approaches follow the same guidelines of MEN1, and no specific research about possible gene therapies in patients with CDKN1B mutations has been carried out yet. ('CDKN1B', 'Gene', '1027', (131, 137)) ('CDKN1B', 'Gene', (131, 137)) ('patients', 'Species', '9606', (117, 125)) ('MEN1', 'Gene', '4221', (53, 57)) ('MEN1', 'Gene', (53, 57)) ('mutations', 'Var', (138, 147)) 9913 32326947 At cellular level, p27-/- mice showed increased proliferative activity of bone marrow cells and formation of numerous osteoblastic colonies. ('p27-/-', 'Var', (19, 25)) ('proliferative activity of bone marrow cells', 'CPA', (48, 91)) ('numerous osteoblastic colonies', 'Disease', (109, 139)) ('numerous osteoblastic colonies', 'Disease', 'MESH:C563990', (109, 139)) ('osteoblastic colonies', 'Phenotype', 'HP:0025027', (118, 139)) ('increased', 'PosReg', (38, 47)) ('mice', 'Species', '10090', (26, 30)) 9917 32326947 Homozygous mutant murine models for both p27Kip1 and Pthrp (p27-/-/Pthrp KI) showed an increase in body weight, lifespan and growth of long bones, due to a higher proliferative state of growth plate, when compared to wild type and mutant models for Pthrp (Pthrp KI) or p27Kip1 (p27-/-). ('Pthrp', 'Gene', '19227', (67, 72)) ('mutant', 'Var', (11, 17)) ('body weight', 'CPA', (99, 110)) ('increase', 'PosReg', (87, 95)) ('increase in body weight', 'Phenotype', 'HP:0004324', (87, 110)) ('proliferative state', 'CPA', (163, 182)) ('p27-/-/Pthrp KI', 'Gene', (60, 75)) ('p27Kip1', 'Gene', (269, 276)) ('growth of long bones', 'Phenotype', 'HP:0006392', (125, 145)) ('Pthrp', 'Gene', (53, 58)) ('growth of long bones', 'CPA', (125, 145)) ('Pthrp', 'Gene', '19227', (256, 261)) ('p27Kip1', 'Gene', '12576', (41, 48)) ('Pthrp', 'Gene', (249, 254)) ('Pthrp', 'Gene', (67, 72)) ('higher', 'PosReg', (156, 162)) ('p27-/-/Pthrp KI', 'Gene', '19227', (60, 75)) ('lifespan', 'CPA', (112, 120)) ('p27Kip1', 'Gene', '12576', (269, 276)) ('Pthrp', 'Gene', '19227', (53, 58)) ('Pthrp', 'Gene', (256, 261)) ('p27Kip1', 'Gene', (41, 48)) ('Pthrp', 'Gene', '19227', (249, 254)) ('murine', 'Species', '10090', (18, 24)) 9918 32326947 BMD, cortical, epiphyseal and trabecular bone volume, number of osteoblasts and bone areas positive for type I collagen and osteocalcin, were all significantly increased in p27-/- mice and significantly reduced in Pthrp KI and p27-/-/Pthrp KI mice, compared to wild-type mice. ('mice', 'Species', '10090', (271, 275)) ('Pthrp', 'Gene', '19227', (214, 219)) ('p27-/-', 'Var', (173, 179)) ('increased', 'PosReg', (160, 169)) ('reduced', 'NegReg', (203, 210)) ('mice', 'Species', '10090', (243, 247)) ('Pthrp', 'Gene', (234, 239)) ('Pthrp', 'Gene', '19227', (234, 239)) ('BMD', 'Disease', (0, 3)) ('p27-/-/Pthrp KI', 'Gene', '19227', (227, 242)) ('cortical', 'CPA', (5, 13)) ('mice', 'Species', '10090', (180, 184)) ('BMD', 'Disease', 'MESH:D020388', (0, 3)) ('p27-/-/Pthrp KI', 'Gene', (227, 242)) ('Pthrp', 'Gene', (214, 219)) 9920 32326947 Pthrp, Igf-1 and Bmi-1 expression was increased in p27-/- mice and reduced in Pthrp KI and p27-/-/Pthrp KI mice with respect to wild type; expression of these three genes was increased in p27-/-/Pthrp KI mice compared to Pthrp KI mice. ('Pthrp', 'Gene', (78, 83)) ('Pthrp', 'Gene', '19227', (98, 103)) ('p27-/-', 'Var', (51, 57)) ('p27-/-/Pthrp KI', 'Gene', (91, 106)) ('mice', 'Species', '10090', (204, 208)) ('Igf-1', 'Gene', (7, 12)) ('Bmi-1', 'Gene', (17, 22)) ('p27-/-/Pthrp KI', 'Gene', '19227', (188, 203)) ('Pthrp', 'Gene', (195, 200)) ('Pthrp', 'Gene', '19227', (0, 5)) ('mice', 'Species', '10090', (107, 111)) ('Pthrp', 'Gene', '19227', (221, 226)) ('p27-/-/Pthrp KI', 'Gene', '19227', (91, 106)) ('Pthrp', 'Gene', '19227', (78, 83)) ('Pthrp', 'Gene', (98, 103)) ('mice', 'Species', '10090', (58, 62)) ('Igf-1', 'Gene', '16000', (7, 12)) ('increased', 'PosReg', (175, 184)) ('Bmi-1', 'Gene', '12151', (17, 22)) ('expression', 'MPA', (23, 33)) ('Pthrp', 'Gene', (0, 5)) ('mice', 'Species', '10090', (230, 234)) ('Pthrp', 'Gene', '19227', (195, 200)) ('reduced', 'NegReg', (67, 74)) ('p27-/-/Pthrp KI', 'Gene', (188, 203)) ('Pthrp', 'Gene', (221, 226)) ('expression', 'MPA', (139, 149)) ('increased', 'PosReg', (38, 47)) 9921 32326947 The number of colonies-forming units-fibroblasts (CFU-f) and CFU-f positive for alkaline phosphatase (ALP) increased in p27-/- mice with respect to wild-type mice, and in p27-/-/Pthrp KI mice compared to Pthrp KI mice. ('mice', 'Species', '10090', (127, 131)) ('mice', 'Species', '10090', (213, 217)) ('mice', 'Species', '10090', (158, 162)) ('increased', 'PosReg', (107, 116)) ('p27-/-/Pthrp KI', 'Gene', '19227', (171, 186)) ('Pthrp', 'Gene', '19227', (204, 209)) ('Pthrp', 'Gene', (178, 183)) ('Pthrp', 'Gene', '19227', (178, 183)) ('positive for alkaline phosphatase', 'Phenotype', 'HP:0003155', (67, 100)) ('ALP', 'Gene', (102, 105)) ('mice', 'Species', '10090', (187, 191)) ('alkaline phosphatase', 'MPA', (80, 100)) ('p27-/-', 'Var', (120, 126)) ('p27-/-/Pthrp KI', 'Gene', (171, 186)) ('colonies-forming units-fibroblasts', 'CPA', (14, 48)) ('Pthrp', 'Gene', (204, 209)) ('ALP', 'Gene', '250', (102, 105)) 9923 32326947 p27-/- mice also showed an increase of RANKL/OPG ratio, presumably responsible for over-activation of osteoblast activity. ('p27-/-', 'Var', (0, 6)) ('RANKL', 'Gene', (39, 44)) ('OPG', 'Gene', '18383', (45, 48)) ('OPG', 'Gene', (45, 48)) ('mice', 'Species', '10090', (7, 11)) ('RANKL', 'Gene', '21943', (39, 44)) ('increase', 'PosReg', (27, 35)) ('osteoblast activity', 'CPA', (102, 121)) 9924 32326947 p27kip1 may be directly involved in the regulation of skeletal growth through its direct interaction with the C-terminal region and nuclear localization signals (NLSs) of PTHrP. ('PTHrP', 'Gene', (171, 176)) ('NLSs', 'Disease', 'None', (162, 166)) ('interaction', 'Interaction', (89, 100)) ('skeletal growth', 'CPA', (54, 69)) ('NLSs', 'Disease', (162, 166)) ('p27kip1', 'Var', (0, 7)) ('C-terminal', 'Protein', (110, 120)) ('involved', 'Reg', (24, 32)) ('nuclear localization', 'MPA', (132, 152)) ('PTHrP', 'Gene', '19227', (171, 176)) 9925 32326947 The deletion of p27kip1 in Pthrp KI mice appears to partially compensate for bone growth defect and restore osteoblastic differentiation, increasing endochondral ossification and osteogenesis (Table 1), suggesting a possible future use of NLS and C-terminal regions of PTHrP to promote bone growth. ('p27kip1', 'Gene', (16, 23)) ('PTHrP', 'Gene', '19227', (269, 274)) ('endochondral ossification', 'CPA', (149, 174)) ('osteogenesis', 'Disease', 'MESH:D010013', (179, 191)) ('bone growth defect', 'Disease', (77, 95)) ('restore', 'PosReg', (100, 107)) ('Pthrp', 'Gene', (27, 32)) ('Pthrp', 'Gene', '19227', (27, 32)) ('osteoblastic differentiation', 'Disease', (108, 136)) ('PTHrP', 'Gene', (269, 274)) ('osteogenesis', 'Disease', (179, 191)) ('deletion', 'Var', (4, 12)) ('mice', 'Species', '10090', (36, 40)) ('osteoblastic differentiation', 'Disease', 'MESH:D012734', (108, 136)) ('bone growth defect', 'Disease', 'MESH:D006130', (77, 95)) ('increasing', 'PosReg', (138, 148)) 9928 32326947 VHL is caused by inactivating mutations in the tumor suppressor gene VHL (3p25.3) (Table 1), encoding the homologous protein (pVHL), which can be totally absent or inactive. ('inactivating mutations', 'Var', (17, 39)) ('VHL', 'Disease', (0, 3)) ('tumor', 'Disease', 'MESH:D009369', (47, 52)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('VHL', 'Gene', (69, 72)) ('caused by', 'Reg', (7, 16)) ('tumor', 'Disease', (47, 52)) 9930 32326947 Loss of wild type pVHL prevents degradation of HIF factors and induces responses to hypoxia, even when not physiologically required, inducing cell growth and formation of new vessels, thus favoring tumorigenesis. ('cell growth', 'CPA', (142, 153)) ('hypoxia', 'Disease', (84, 91)) ('favoring', 'PosReg', (189, 197)) ('hypoxia', 'Disease', 'MESH:D000860', (84, 91)) ('prevents', 'NegReg', (23, 31)) ('pVHL', 'Gene', (18, 22)) ('formation of new vessels', 'CPA', (158, 182)) ('tumor', 'Disease', 'MESH:D009369', (198, 203)) ('induces', 'Reg', (63, 70)) ('degradation', 'MPA', (32, 43)) ('tumor', 'Phenotype', 'HP:0002664', (198, 203)) ('inducing', 'PosReg', (133, 141)) ('tumor', 'Disease', (198, 203)) ('Loss', 'Var', (0, 4)) 9936 32326947 Indeed, only the complete loss of pVHL in cartilage cells can alter the correct bone growth and metabolism, as reported by studies in murine models with selective inactivation of the Vhlh gene only in the cartilaginous cells (Vhlh-null mice). ('mice', 'Species', '10090', (236, 240)) ('Vhlh', 'Gene', '22346', (226, 230)) ('Vhlh', 'Gene', (226, 230)) ('murine', 'Species', '10090', (134, 140)) ('alter', 'Reg', (62, 67)) ('bone growth', 'CPA', (80, 91)) ('Vhlh', 'Gene', '22346', (183, 187)) ('Vhlh', 'Gene', (183, 187)) ('loss', 'Var', (26, 30)) 9943 32326947 Homozygous mutations of SDHA gene (5p15) cause a clinical phenotype (Leigh syndrome) characterized by degenerative myeloencephalopathy. ('Leigh syndrome', 'Disease', (69, 83)) ('Homozygous mutations', 'Var', (0, 20)) ('SDHA', 'Gene', (24, 28)) ('cause', 'Reg', (41, 46)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (69, 83)) ('degenerative myeloencephalopathy', 'Disease', (102, 134)) ('SDHA', 'Gene', '6389', (24, 28)) ('degenerative myeloencephalopathy', 'Disease', 'MESH:D019636', (102, 134)) 9945 32326947 Indeed, mutations of SDHx genes induce energy metabolism disorders and succinate accumulation, the last inhibits the activity of PHD2 and leads to increased activation of HIF-alpha. ('increased activation', 'PosReg', (147, 167)) ('activity', 'MPA', (117, 125)) ('PHD2', 'Gene', (129, 133)) ('succinate accumulation', 'MPA', (71, 93)) ('inhibits', 'NegReg', (104, 112)) ('PHD2', 'Gene', '54583', (129, 133)) ('HIF-alpha', 'Protein', (171, 180)) ('mutations', 'Var', (8, 17)) ('succinate', 'Chemical', 'MESH:D019802', (71, 80)) ('SDHx', 'Gene', (21, 25)) ('induce', 'Reg', (32, 38)) ('metabolism disorders', 'Disease', 'MESH:D008659', (46, 66)) ('metabolism disorders', 'Disease', (46, 66)) 9951 32326947 To date, no studies on animal models with mutations of SDHx genes and bone diseases, nor specific studies that correlate the gene encoding components of the enzymatic succinate dehydrogenase complex or complex 2 of the mitochondrial respiratory chain with bone and/or mineral metabolism, have been published (Table 1). ('bone diseases', 'Disease', 'MESH:D001847', (70, 83)) ('succinate', 'Chemical', 'MESH:D019802', (167, 176)) ('SDHx genes', 'Gene', (55, 65)) ('bone diseases', 'Disease', (70, 83)) ('mutations', 'Var', (42, 51)) 9955 32326947 HPT-JT is caused by inactivating germinal mutations of the HRPT2/CDC73 tumor suppressor gene (1q31.2); (Table 1), encoding a nuclear protein called parafibromin, a component of the PAF1 complex, that is responsible for H3K4 histone trimethylation and H3K79 histone methylation. ('HRPT2', 'Gene', '79577', (59, 64)) ('HPT-JT', 'Gene', (0, 6)) ('HRPT2', 'Gene', (59, 64)) ('tumor', 'Disease', 'MESH:D009369', (71, 76)) ('CDC73', 'Gene', '79577', (65, 70)) ('HPT-JT', 'Gene', '79577', (0, 6)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('caused by', 'Reg', (10, 19)) ('inactivating', 'Var', (20, 32)) ('tumor', 'Disease', (71, 76)) ('mutations', 'Var', (42, 51)) ('CDC73', 'Gene', (65, 70)) 9956 32326947 Mutations of CDC73 also cause CDC73-related isolated familial hyperparathyroidism and CDC73-related parathyroid carcinoma. ('CDC73', 'Gene', (86, 91)) ('CDC73', 'Gene', '79577', (86, 91)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (104, 121)) ('cause', 'Reg', (24, 29)) ('parathyroid carcinoma', 'Disease', 'MESH:D010282', (100, 121)) ('familial hyperparathyroidism', 'Disease', (53, 81)) ('familial hyperparathyroidism', 'Disease', 'MESH:D006961', (53, 81)) ('parathyroid carcinoma', 'Disease', (100, 121)) ('CDC73', 'Gene', (30, 35)) ('Mutations', 'Var', (0, 9)) ('carcinoma', 'Phenotype', 'HP:0030731', (112, 121)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (62, 81)) ('CDC73', 'Gene', (13, 18)) ('parathyroid carcinoma', 'Phenotype', 'HP:0006780', (100, 121)) ('CDC73', 'Gene', '79577', (30, 35)) ('CDC73', 'Gene', '79577', (13, 18)) 9964 32326947 Homozygous deletion of Cdc73 in MSCs resulted in embryos non-presenting mesenchymal development of the internal organs. ('resulted in', 'Reg', (37, 48)) ('Cdc73', 'Gene', (23, 28)) ('deletion', 'Var', (11, 19)) ('Cdc73', 'Gene', '214498', (23, 28)) 9972 32326947 Over 80% of CS patients have a PTEN mutation. ('PTEN', 'Gene', (31, 35)) ('patients', 'Species', '9606', (15, 23)) ('PTEN', 'Gene', '5728', (31, 35)) ('mutation', 'Var', (36, 44)) 9973 32326947 Mutations in SDHB, SDHD or KLLN genes were recently identified in CS patients, with or without PTEN mutations. ('identified', 'Reg', (52, 62)) ('SDHD', 'Gene', '6392', (19, 23)) ('SDHB', 'Gene', '6390', (13, 17)) ('SDHD', 'Gene', (19, 23)) ('KLLN', 'Gene', (27, 31)) ('Mutations', 'Var', (0, 9)) ('PTEN', 'Gene', (95, 99)) ('SDHB', 'Gene', (13, 17)) ('PTEN', 'Gene', '5728', (95, 99)) ('patients', 'Species', '9606', (69, 77)) ('KLLN', 'Gene', '100144748', (27, 31)) 9984 32326947 Failure to express Pten induces stress of the endoplasmic reticulum and causes up-regulation of hypoxia-induced genes, including HIF-1alpha,; (Tab.1). ('Pten', 'Gene', '5728', (19, 23)) ('Failure', 'Var', (0, 7)) ('Pten', 'Gene', (19, 23)) ('HIF-1alpha', 'Gene', '3091', (129, 139)) ('induces', 'Reg', (24, 31)) ('hypoxia', 'Disease', (96, 103)) ('hypoxia', 'Disease', 'MESH:D000860', (96, 103)) ('stress', 'Disease', (32, 38)) ('stress', 'Disease', 'MESH:D000079225', (32, 38)) ('HIF-1alpha', 'Gene', (129, 139)) ('up-regulation', 'PosReg', (79, 92)) 9985 32326947 PTEN function in chondrocytes is essential for inhibiting dyschondroplasia; this could explain how the loss of PTEN protein has a direct pathogenic role in skeletal manifestations observed in CS patients. ('PTEN', 'Gene', (111, 115)) ('loss', 'Var', (103, 107)) ('PTEN', 'Gene', '5728', (111, 115)) ('dyschondroplasia', 'Disease', (58, 74)) ('patients', 'Species', '9606', (195, 203)) ('PTEN', 'Gene', (0, 4)) ('PTEN', 'Gene', '5728', (0, 4)) ('dyschondroplasia', 'Disease', 'MESH:D010009', (58, 74)) ('protein', 'Protein', (116, 123)) 9987 32326947 Based on these genetic alterations, CNC was subdivided into two subtypes: CNC1 (mutation on PRKAR1A gene at 17q22-24) and CNC2 (mutation at 2p16 locus). ('CNC2', 'Gene', (122, 126)) ('CNC1', 'Gene', '5573', (74, 78)) ('PRKAR1A', 'Gene', (92, 99)) ('CNC2', 'Gene', '1257', (122, 126)) ('CNC1', 'Gene', (74, 78)) ('mutation', 'Var', (80, 88)) 9988 32326947 Approximately 60% of CNC patients bear an inactivating germline mutation of the PRKAR1A tumor suppressor gene, encoding the I-alpha regulatory subunit of cAMP-dependent protein kinase (PKA). ('tumor', 'Disease', 'MESH:D009369', (88, 93)) ('CNC', 'Disease', (21, 24)) ('inactivating germline mutation', 'Var', (42, 72)) ('cAMP', 'Chemical', '-', (154, 158)) ('patients', 'Species', '9606', (25, 33)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('tumor', 'Disease', (88, 93)) ('PRKAR1A', 'Gene', (80, 87)) 9997 32326947 Over-activation of PKA signaling causes fibrous dysplasia, an immature expansion of osteoblast precursors leading to structurally immature and hyper-proliferative bone. ('PKA', 'Gene', (19, 22)) ('hyper-proliferative bone', 'Phenotype', 'HP:0100774', (143, 167)) ('fibrous dysplasia', 'Disease', 'MESH:D005357', (40, 57)) ('fibrous dysplasia', 'Disease', (40, 57)) ('Over-activation', 'Var', (0, 15)) 10001 32326947 The loss of Prkar1a-encoded protein increases the activity of PKA, which inhibits the transcription of Runx2 and its action on the target genes, and negatively regulates osteoblast differentiation. ('Prkar1a', 'Gene', '19084', (12, 19)) ('negatively', 'NegReg', (149, 159)) ('Prkar1a', 'Gene', (12, 19)) ('Runx2', 'Gene', (103, 108)) ('Runx2', 'Gene', '860', (103, 108)) ('PKA', 'Gene', (62, 65)) ('inhibits', 'NegReg', (73, 81)) ('action', 'MPA', (117, 123)) ('transcription', 'MPA', (86, 99)) ('activity', 'MPA', (50, 58)) ('increases', 'PosReg', (36, 45)) ('osteoblast differentiation', 'CPA', (170, 196)) ('regulates', 'Reg', (160, 169)) ('loss', 'Var', (4, 8)) 10002 32326947 The PKA signaling pathway, a key signal transduction pathway downstream of the PTH receptor (PTH1R) and PKA hyper-activation, resulting from the loss of PRKAR1A, could influence the PTH response. ('PTH', 'Gene', '5741', (93, 96)) ('PTH', 'Gene', (182, 185)) ('PKA signaling pathway', 'Pathway', (4, 25)) ('PTH', 'Gene', (79, 82)) ('PTH1R', 'Gene', '5745', (93, 98)) ('loss', 'Var', (145, 149)) ('PTH', 'Gene', '5741', (182, 185)) ('influence', 'Reg', (168, 177)) ('PTH1R', 'Gene', (93, 98)) ('PTH', 'Gene', (93, 96)) ('PRKAR1A', 'Gene', (153, 160)) ('PTH', 'Gene', '5741', (79, 82)) 10007 32326947 TSC is caused by loss-of-function mutations, either of the TSC1 gene (9q34), encoding hamartin, or the TSC2 gene (16p13), encoding tuberin; (Table 1), with over half of the cases arising from non-inherited embryonal mutations. ('tuberin', 'Gene', '7249', (131, 138)) ('loss-of-function', 'NegReg', (17, 33)) ('TSC2', 'Gene', '7249', (103, 107)) ('TSC2', 'Gene', (103, 107)) ('TSC', 'Gene', (0, 3)) ('tuberin', 'Gene', (131, 138)) ('TSC1', 'Gene', '7248', (59, 63)) ('TSC', 'Gene', '7248', (0, 3)) ('TSC', 'Gene', (59, 62)) ('TSC', 'Gene', '7248', (59, 62)) ('TSC', 'Gene', '7248', (103, 106)) ('TSC1', 'Gene', (59, 63)) ('TSC', 'Gene', (103, 106)) ('mutations', 'Var', (34, 43)) 10009 32326947 Loss of one of the encoded proteins is sufficient for development of TSC, leading to a complete loss of hamartin-tuberin complex activity, with no inhibitory modulation on the mTOR signaling cascade and subsequent alteration of nutritional signal transduction and stimulation of cell growth. ('tuberin', 'Gene', '7249', (113, 120)) ('alteration', 'Reg', (214, 224)) ('TSC', 'Gene', (69, 72)) ('tuberin', 'Gene', (113, 120)) ('activity', 'MPA', (129, 137)) ('loss', 'NegReg', (96, 100)) ('TSC', 'Gene', '7248', (69, 72)) ('Loss', 'Var', (0, 4)) 10011 32326947 Recently, a study in a murine model of TSC with embryonic loss of Tsc1 in brain neurons, demonstrated the therapeutic efficacy of hamartin transfection by adenovirus vector, resulting in the normalization of neuron size and a decrease in markers of mTOR activation, with no side effects. ('TSC', 'Gene', (39, 42)) ('normalization', 'MPA', (191, 204)) ('TSC', 'Gene', '7248', (39, 42)) ('embryonic loss', 'Disease', 'MESH:D020964', (48, 62)) ('embryonic loss', 'Disease', (48, 62)) ('neuron size', 'CPA', (208, 219)) ('decrease', 'NegReg', (226, 234)) ('murine', 'Species', '10090', (23, 29)) ('Tsc1', 'Gene', (66, 70)) ('Tsc1', 'Gene', '64930', (66, 70)) ('markers of mTOR activation', 'MPA', (238, 264)) ('transfection', 'Var', (139, 151)) ('adenovirus', 'Species', '10508', (155, 165)) 10018 32326947 However, the inactivation of the hamartin-tuberin complex causes hyper-activation of mTOR, resulting in uncontrolled cell proliferation and growth that could also occur in bone tissue. ('tuberin', 'Gene', (42, 49)) ('inactivation', 'Var', (13, 25)) ('uncontrolled', 'MPA', (104, 116)) ('hyper-activation', 'MPA', (65, 81)) ('tuberin', 'Gene', '7249', (42, 49)) ('mTOR', 'Gene', (85, 89)) ('growth', 'CPA', (140, 146)) 10019 32326947 Only a small percentage (14%) of patients without TSC1 or TSC2 mutations showed SBLs, while mutated patients develop SBLs in 84% of cases (of these, 47.2% have a pathogenic variant of TSC1 and 52.8% of TSC2). ('mutations', 'Var', (63, 72)) ('pathogenic', 'Reg', (162, 172)) ('TSC1', 'Gene', (184, 188)) ('variant', 'Var', (173, 180)) ('TSC2', 'Gene', '7249', (58, 62)) ('patients', 'Species', '9606', (33, 41)) ('TSC2', 'Gene', (58, 62)) ('SBLs', 'Disease', (80, 84)) ('TSC1', 'Gene', (50, 54)) ('patients', 'Species', '9606', (100, 108)) ('TSC1', 'Gene', '7248', (50, 54)) ('TSC1', 'Gene', '7248', (184, 188)) ('TSC2', 'Gene', '7249', (202, 206)) ('TSC2', 'Gene', (202, 206)) 10020 32326947 Early post-natal treatment with rapamycin, a mTOR inhibitor, in mice with a neural crest-specific Tsc1 deletion, prevented the growth of aberrant bone mass, whereas late treatment did not have this effect. ('prevented', 'NegReg', (113, 122)) ('growth of aberrant bone mass', 'CPA', (127, 155)) ('rapamycin', 'Chemical', 'MESH:D020123', (32, 41)) ('Tsc1', 'Gene', '64930', (98, 102)) ('Tsc1', 'Gene', (98, 102)) ('mice', 'Species', '10090', (64, 68)) ('deletion', 'Var', (103, 111)) 10025 32326947 NF1 is caused by inactivating mutations of the NF1 tumor-suppressor gene (17q11.2) (Table 1), encoding neurofibromin 1, a negative regulator of the RAS transduction pathway, which regulates basic functions, such as proliferation, differentiation and apoptosis. ('neurofibromin 1', 'Gene', '4763', (103, 118)) ('inactivating mutations', 'Var', (17, 39)) ('differentiation', 'CPA', (230, 245)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('apoptosis', 'CPA', (250, 259)) ('tumor', 'Disease', (51, 56)) ('NF1', 'Gene', (47, 50)) ('NF1', 'Gene', '4763', (47, 50)) ('neurofibromin 1', 'Gene', (103, 118)) ('NF1', 'Gene', (0, 3)) ('regulates', 'Reg', (180, 189)) ('caused by', 'Reg', (7, 16)) ('NF1', 'Gene', '4763', (0, 3)) ('tumor', 'Disease', 'MESH:D009369', (51, 56)) 10032 32326947 Less common skeletal manifestations include local overgrowth, abnormalities of the rib cage, rib fusion, genu varum/valgum, lytic bone lesions, osteosclerosis, absence of the patella, and syndactyly. ('genu varum', 'Phenotype', 'HP:0002970', (105, 115)) ('abnormalities', 'Var', (62, 75)) ('abnormalities of the rib cage', 'Phenotype', 'HP:0001547', (62, 91)) ('genu varum/valgum', 'Phenotype', 'HP:0002857', (105, 122)) ('absence', 'Disease', (160, 167)) ('genu', 'Disease', (105, 109)) ('syndactyly', 'Phenotype', 'HP:0001159', (188, 198)) ('rib fusion', 'CPA', (93, 103)) ('lytic bone lesions', 'Disease', (124, 142)) ('syndactyly', 'Disease', (188, 198)) ('absence of the patella', 'Phenotype', 'HP:0006443', (160, 182)) ('abnormalities of the rib', 'Phenotype', 'HP:0000772', (62, 86)) ('osteosclerosis', 'Disease', (144, 158)) ('osteosclerosis', 'Disease', 'MESH:D010026', (144, 158)) ('osteosclerosis', 'Phenotype', 'HP:0011001', (144, 158)) ('local overgrowth', 'CPA', (44, 60)) ('lytic bone lesions', 'Disease', 'MESH:D001847', (124, 142)) ('rib fusion', 'Phenotype', 'HP:0000902', (93, 103)) ('overgrowth', 'Phenotype', 'HP:0001548', (50, 60)) 10033 32326947 Bone lesions are mainly congenital and often associated with each other, strongly suggesting that NF1 has a direct effect on proper skeletal development and correct homeostasis of bone remodeling, and that its inactivating mutations are responsible for the development of NF1 bone complications. ('inactivating mutations', 'Var', (210, 232)) ('effect', 'Reg', (115, 121)) ('NF1', 'Gene', (98, 101)) ('correct homeostasis of bone remodeling', 'MPA', (157, 195)) ('bone', 'Disease', (276, 280)) ('NF1', 'Gene', '4763', (98, 101)) ('responsible', 'Reg', (237, 248)) ('NF1', 'Gene', (272, 275)) ('NF1', 'Gene', '4763', (272, 275)) 10043 32326947 Mice with a conditional specific inactivation of Nf1 in limb skeleton (Nf1Prx1 mice) showed two main signs: bowing of the tibia and diminished growth, the first due to decreased fitness of the cortical bone, the latter to lower proliferation rates and differentiation defect of chondrocytes. ('Nf1', 'Gene', '18015', (49, 52)) ('growth', 'CPA', (143, 149)) ('decreased fitness', 'Disease', 'MESH:D012640', (168, 185)) ('Nf1', 'Gene', '18015', (71, 74)) ('Nf1', 'Gene', (49, 52)) ('differentiation defect of chondrocytes', 'CPA', (252, 290)) ('mice', 'Species', '10090', (79, 83)) ('bowing of the tibia', 'Phenotype', 'HP:0002982', (108, 127)) ('bowing of the tibia', 'CPA', (108, 127)) ('decreased fitness', 'Disease', (168, 185)) ('Nf1', 'Gene', (71, 74)) ('Mice', 'Species', '10090', (0, 4)) ('inactivation', 'Var', (33, 45)) ('lower', 'NegReg', (222, 227)) ('diminished', 'NegReg', (132, 142)) 10046 32326947 All these data suggest that neurofibromin is an important modulator of skeletal development and growth, and that somatic loss of the wild type NF1 allele in osteoprogenitor cells is necessary to develop NF1-associated bone phenotypes. ('neurofibromin', 'Gene', '4763', (28, 41)) ('loss', 'Var', (121, 125)) ('neurofibromin', 'Gene', (28, 41)) ('NF1', 'Gene', (143, 146)) ('NF1', 'Gene', (203, 206)) ('NF1', 'Gene', '4763', (143, 146)) ('NF1', 'Gene', '4763', (203, 206)) 10051 24169168 The Presence of SDHB Mutations Should Modify Surgical Indications for Carotid Body Paragangliomas The aim of this study was to determine whether the genetic background of the disease should be incorporated into treatment decision making. ('Paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('SDHB', 'Gene', '6390', (16, 20)) ('Modify', 'Reg', (38, 44)) ('SDHB', 'Gene', (16, 20)) ('Carotid Body Paragangliomas', 'Disease', (70, 97)) ('Mutations', 'Var', (21, 30)) ('Carotid Body Paragangliomas', 'Phenotype', 'HP:0100635', (70, 97)) ('Carotid Body Paragangliomas', 'Disease', 'MESH:D002345', (70, 97)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (83, 97)) 10052 24169168 Carotid body paragangliomas are rare tumors that often affect patients with genetic mutations of the succinate dehydrogenase complex (SDHx). ('genetic mutations', 'Var', (76, 93)) ('tumors', 'Phenotype', 'HP:0002664', (37, 43)) ('succinate', 'Chemical', 'MESH:D013386', (101, 110)) ('Carotid body paragangliomas', 'Disease', (0, 27)) ('paraganglioma', 'Phenotype', 'HP:0002668', (13, 26)) ('paragangliomas', 'Phenotype', 'HP:0002668', (13, 27)) ('Carotid body paragangliomas', 'Phenotype', 'HP:0100635', (0, 27)) ('SDHx', 'Gene', (134, 138)) ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('Carotid body paragangliomas', 'Disease', 'MESH:D002345', (0, 27)) ('tumors', 'Disease', (37, 43)) ('patients', 'Species', '9606', (62, 70)) ('tumors', 'Disease', 'MESH:D009369', (37, 43)) 10053 24169168 Despite growing evidence that germ line genetic mutations alter the aggressiveness of paragangliomas, treatment decisions are currently based only on clinical symptoms and tumor size in patients with carotid body paragangliomas. ('tumor', 'Phenotype', 'HP:0002664', (172, 177)) ('aggressiveness of paragangliomas', 'Disease', (68, 100)) ('aggressiveness of paragangliomas', 'Disease', 'MESH:D001523', (68, 100)) ('paragangliomas', 'Phenotype', 'HP:0002668', (213, 227)) ('tumor', 'Disease', (172, 177)) ('paraganglioma', 'Phenotype', 'HP:0002668', (213, 226)) ('paraganglioma', 'Phenotype', 'HP:0002668', (86, 99)) ('carotid body paragangliomas', 'Disease', (200, 227)) ('carotid body paragangliomas', 'Disease', 'MESH:D002345', (200, 227)) ('paragangliomas', 'Phenotype', 'HP:0002668', (86, 100)) ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (200, 226)) ('alter', 'Reg', (58, 63)) ('carotid body paragangliomas', 'Phenotype', 'HP:0100635', (200, 227)) ('aggressiveness', 'Phenotype', 'HP:0000718', (68, 82)) ('tumor', 'Disease', 'MESH:D009369', (172, 177)) ('mutations', 'Var', (48, 57)) ('patients', 'Species', '9606', (186, 194)) 10058 24169168 Twelve patients had germ line mutations in SDHB, 17 in SDHD, and 5 carried no known mutation. ('SDHB', 'Gene', '6390', (43, 47)) ('SDHB', 'Gene', (43, 47)) ('mutations', 'Var', (30, 39)) ('SDHD', 'Gene', '6392', (55, 59)) ('patients', 'Species', '9606', (7, 15)) ('SDHD', 'Gene', (55, 59)) 10060 24169168 Tumor size at resection was significantly smaller in patients with SDHB mutations than in patients with non-SDHB mutations (2.1 vs 3.3 cm, P = 0.02). ('mutations', 'Var', (72, 81)) ('SDHB', 'Gene', (108, 112)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('SDHB', 'Gene', '6390', (67, 71)) ('patients', 'Species', '9606', (53, 61)) ('smaller', 'NegReg', (42, 49)) ('SDHB', 'Gene', (67, 71)) ('Tumor size', 'CPA', (0, 10)) ('SDHB', 'Gene', '6390', (108, 112)) ('patients', 'Species', '9606', (90, 98)) 10061 24169168 Patients with a mutation in the SDHB gene also had significantly worse disease-free survival compared with patients without an SDHB gene mutation (P = 0.03). ('disease-free survival', 'CPA', (71, 92)) ('mutation', 'Var', (16, 24)) ('worse', 'NegReg', (65, 70)) ('SDHB', 'Gene', '6390', (32, 36)) ('SDHB', 'Gene', '6390', (127, 131)) ('SDHB', 'Gene', (32, 36)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', (127, 131)) ('patients', 'Species', '9606', (107, 115)) 10062 24169168 Mutations in the SDHB gene are associated with worse disease- free survival after resection in patients with carotid body paragangliomas despite earlier intervention. ('disease-', 'Disease', (53, 61)) ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (109, 135)) ('paraganglioma', 'Phenotype', 'HP:0002668', (122, 135)) ('paragangliomas', 'Phenotype', 'HP:0002668', (122, 136)) ('patients', 'Species', '9606', (95, 103)) ('SDHB', 'Gene', '6390', (17, 21)) ('associated', 'Reg', (31, 41)) ('carotid body paragangliomas', 'Disease', 'MESH:D002345', (109, 136)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (17, 21)) ('carotid body paragangliomas', 'Disease', (109, 136)) ('worse', 'NegReg', (47, 52)) ('carotid body paragangliomas', 'Phenotype', 'HP:0100635', (109, 136)) 10063 24169168 This suggests that a more aggressive surgical approach is warranted in patients with SDHB mutations. ('SDHB', 'Gene', '6390', (85, 89)) ('patients', 'Species', '9606', (71, 79)) ('SDHB', 'Gene', (85, 89)) ('mutations', 'Var', (90, 99)) 10071 24169168 The development of carotid body paragangliomas is often associated with germ line genetic mutations, most commonly involving genes in the succinate dehydrogenase complex (SDHx). ('paraganglioma', 'Phenotype', 'HP:0002668', (32, 45)) ('carotid body paragangliomas', 'Phenotype', 'HP:0100635', (19, 46)) ('mutations', 'Var', (90, 99)) ('succinate', 'Chemical', 'MESH:D013386', (138, 147)) ('associated', 'Reg', (56, 66)) ('SDHx', 'Gene', (171, 175)) ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (19, 45)) ('carotid body paragangliomas', 'Disease', (19, 46)) ('paragangliomas', 'Phenotype', 'HP:0002668', (32, 46)) ('carotid body paragangliomas', 'Disease', 'MESH:D002345', (19, 46)) 10072 24169168 Paraganglioma syndromes 1 through 4 are associated with mutations in SDHD, SDHAF2, SDHC, and SDHB, respectively. ('mutations', 'Var', (56, 65)) ('SDHB', 'Gene', (93, 97)) ('Paraganglioma syndromes', 'Disease', 'MESH:D010235', (0, 23)) ('Paraganglioma syndromes', 'Disease', (0, 23)) ('SDHC', 'Gene', (83, 87)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('SDHC', 'Gene', '6391', (83, 87)) ('SDHD', 'Gene', '6392', (69, 73)) ('SDHAF2', 'Gene', '54949', (75, 81)) ('SDHAF2', 'Gene', (75, 81)) ('SDHB', 'Gene', '6390', (93, 97)) ('associated', 'Reg', (40, 50)) ('SDHD', 'Gene', (69, 73)) 10073 24169168 Mutation of the SDHA gene is also associated with paragangliomas but does not cause one of the traditional paraganglioma syndromes. ('paragangliomas', 'Disease', 'MESH:D010235', (50, 64)) ('associated', 'Reg', (34, 44)) ('Mutation', 'Var', (0, 8)) ('SDHA', 'Gene', '6389', (16, 20)) ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (107, 130)) ('paraganglioma', 'Phenotype', 'HP:0002668', (107, 120)) ('paraganglioma syndromes', 'Disease', (107, 130)) ('paraganglioma', 'Phenotype', 'HP:0002668', (50, 63)) ('paragangliomas', 'Disease', (50, 64)) ('paragangliomas', 'Phenotype', 'HP:0002668', (50, 64)) ('SDHA', 'Gene', (16, 20)) 10074 24169168 Overall, mutations in SDHB result in more aggressive disease with higher rates of metastasis compared with mutations in SDHD, whereas mutations in SDHD result in a higher incidence of head and neck paragangliomas and a comparatively lower incidence of pheochromocytomas. ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (184, 211)) ('mutations', 'Var', (9, 18)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (252, 268)) ('SDHD', 'Gene', '6392', (120, 124)) ('paraganglioma', 'Phenotype', 'HP:0002668', (198, 211)) ('paragangliomas', 'Phenotype', 'HP:0002668', (198, 212)) ('aggressive disease', 'Disease', (42, 60)) ('SDHB', 'Gene', '6390', (22, 26)) ('aggressive disease', 'Disease', 'MESH:D001523', (42, 60)) ('SDHD', 'Gene', (120, 124)) ('mutations', 'Var', (134, 143)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (252, 269)) ('pheochromocytomas', 'Disease', (252, 269)) ('head and neck paragangliomas', 'Disease', 'MESH:D006258', (184, 212)) ('SDHB', 'Gene', (22, 26)) ('SDHD', 'Gene', '6392', (147, 151)) ('higher', 'PosReg', (66, 72)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (184, 212)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (193, 212)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (252, 269)) ('metastasis', 'CPA', (82, 92)) ('SDHD', 'Gene', (147, 151)) 10079 24169168 Patients underwent genetic testing for germ line mutations and deletions in SDHA, SDHB, SDHC, SDHD, SDHAF2, RET, VHL, and TMEM127. ('SDHA', 'Gene', '6389', (76, 80)) ('TMEM127', 'Gene', '55654', (122, 129)) ('SDHC', 'Gene', '6391', (88, 92)) ('Patients', 'Species', '9606', (0, 8)) ('SDHD', 'Gene', '6392', (94, 98)) ('SDHA', 'Gene', (100, 104)) ('RET', 'Gene', '5979', (108, 111)) ('VHL', 'Gene', (113, 116)) ('SDHB', 'Gene', '6390', (82, 86)) ('deletions', 'Var', (63, 72)) ('SDHC', 'Gene', (88, 92)) ('SDHA', 'Gene', '6389', (100, 104)) ('SDHD', 'Gene', (94, 98)) ('SDHAF2', 'Gene', (100, 106)) ('SDHAF2', 'Gene', '54949', (100, 106)) ('SDHA', 'Gene', (76, 80)) ('VHL', 'Gene', '7428', (113, 116)) ('SDHB', 'Gene', (82, 86)) ('RET', 'Gene', (108, 111)) ('TMEM127', 'Gene', (122, 129)) 10092 24169168 Seventeen patients (50%) were positive for an SDHD mutation and 12 patients (35.3%) were positive for an SDHB mutation. ('SDHD', 'Gene', '6392', (46, 50)) ('SDHB', 'Gene', '6390', (105, 109)) ('positive', 'Reg', (30, 38)) ('patients', 'Species', '9606', (67, 75)) ('SDHD', 'Gene', (46, 50)) ('SDHB', 'Gene', (105, 109)) ('mutation', 'Var', (51, 59)) ('patients', 'Species', '9606', (10, 18)) 10101 24169168 The average tumor size at the time of operation was 2.1 cm in patients with germ line SDHB mutations, 3.1 cm in patients with germ line SDHD mutations, and 3.5 cm inpatients without germ line mutations. ('SDHB', 'Gene', (86, 90)) ('tumor', 'Disease', 'MESH:D009369', (12, 17)) ('patients', 'Species', '9606', (112, 120)) ('SDHD', 'Gene', (136, 140)) ('SDHD', 'Gene', '6392', (136, 140)) ('mutations', 'Var', (91, 100)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('patients', 'Species', '9606', (165, 173)) ('tumor', 'Disease', (12, 17)) ('patients', 'Species', '9606', (62, 70)) ('SDHB', 'Gene', '6390', (86, 90)) 10102 24169168 When stratified by germ line mutation status, patients with SDHB mutations had significantly smaller tumors than patients without SDHB mutations (P = 0.02, Fig. ('patients', 'Species', '9606', (46, 54)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) ('SDHB', 'Gene', '6390', (60, 64)) ('SDHB', 'Gene', '6390', (130, 134)) ('patients', 'Species', '9606', (113, 121)) ('SDHB', 'Gene', (60, 64)) ('mutations', 'Var', (65, 74)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('SDHB', 'Gene', (130, 134)) ('smaller', 'NegReg', (93, 100)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('tumors', 'Disease', (101, 107)) 10108 24169168 Among the clinical, genetic, and demographic parameters analyzed, germ line SDHB mutation status was the only variable significantly associated with disease-free interval (P = 0.03, Fig. ('SDHB', 'Gene', '6390', (76, 80)) ('mutation', 'Var', (81, 89)) ('SDHB', 'Gene', (76, 80)) ('associated', 'Reg', (133, 143)) 10109 24169168 When patients with synchronous noncarotid body paragangliomas were excluded, there was still a trend toward worse DFS in patients with SDHB mutations (P = 0.09). ('synchronous noncarotid body paragangliomas', 'Disease', 'MESH:D009378', (19, 61)) ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (34, 60)) ('SDHB', 'Gene', '6390', (135, 139)) ('carotid body paragangliomas', 'Phenotype', 'HP:0100635', (34, 61)) ('patients', 'Species', '9606', (5, 13)) ('paraganglioma', 'Phenotype', 'HP:0002668', (47, 60)) ('SDHB', 'Gene', (135, 139)) ('synchronous noncarotid body paragangliomas', 'Disease', (19, 61)) ('worse', 'NegReg', (108, 113)) ('mutations', 'Var', (140, 149)) ('DFS', 'MPA', (114, 117)) ('patients', 'Species', '9606', (121, 129)) ('paragangliomas', 'Phenotype', 'HP:0002668', (47, 61)) 10110 24169168 Although not statistically significant, patients with SDHB mutations were more likely to develop recurrence (50% in SDHB vs 22.7% in non-SDHB, P = 0.10). ('patients', 'Species', '9606', (40, 48)) ('SDHB', 'Gene', '6390', (54, 58)) ('SDHB', 'Gene', '6390', (116, 120)) ('SDHB', 'Gene', (54, 58)) ('SDHB', 'Gene', '6390', (137, 141)) ('recurrence', 'Disease', (97, 107)) ('SDHB', 'Gene', (137, 141)) ('SDHB', 'Gene', (116, 120)) ('mutations', 'Var', (59, 68)) ('develop', 'PosReg', (89, 96)) 10116 24169168 Patients with germ line SDHB mutations also had shorter DFS after surgical resection than patients without SDHB mutations. ('SDHB', 'Gene', (24, 28)) ('SDHB', 'Gene', (107, 111)) ('mutations', 'Var', (29, 38)) ('shorter', 'NegReg', (48, 55)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', '6390', (24, 28)) ('DFS', 'MPA', (56, 59)) ('patients', 'Species', '9606', (90, 98)) ('SDHB', 'Gene', '6390', (107, 111)) 10118 24169168 The most important finding in this study is the relatively poor DFS in patients with SDHB mutations after surgical resection of smaller tumors. ('tumors', 'Disease', (136, 142)) ('tumors', 'Disease', 'MESH:D009369', (136, 142)) ('tumors', 'Phenotype', 'HP:0002664', (136, 142)) ('mutations', 'Var', (90, 99)) ('DFS', 'MPA', (64, 67)) ('patients', 'Species', '9606', (71, 79)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('poor', 'NegReg', (59, 63)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) 10119 24169168 The lower DFS observed in this cohort is consistent with data indicating that germ line SDHB mutations are associated with more aggressive disease. ('mutations', 'Var', (93, 102)) ('aggressive disease', 'Disease', (128, 146)) ('lower', 'NegReg', (4, 9)) ('associated', 'Reg', (107, 117)) ('SDHB', 'Gene', '6390', (88, 92)) ('SDHB', 'Gene', (88, 92)) ('DFS', 'MPA', (10, 13)) ('aggressive disease', 'Disease', 'MESH:D001523', (128, 146)) 10120 24169168 However, it is remarkable that patients with germ line SDHB mutations had a lower DFS despite the fact that the tumors were resected at a smaller tumor size than patients without an SDHB mutation (Fig. ('patients', 'Species', '9606', (162, 170)) ('SDHB', 'Gene', (55, 59)) ('SDHB', 'Gene', '6390', (55, 59)) ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('DFS', 'MPA', (82, 85)) ('tumor', 'Disease', 'MESH:D009369', (112, 117)) ('tumor', 'Disease', (146, 151)) ('tumors', 'Phenotype', 'HP:0002664', (112, 118)) ('lower', 'NegReg', (76, 81)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('patients', 'Species', '9606', (31, 39)) ('tumor', 'Disease', 'MESH:D009369', (146, 151)) ('SDHB', 'Gene', '6390', (182, 186)) ('tumor', 'Disease', (112, 117)) ('mutations', 'Var', (60, 69)) ('tumors', 'Disease', 'MESH:D009369', (112, 118)) ('tumors', 'Disease', (112, 118)) ('SDHB', 'Gene', (182, 186)) 10121 24169168 The statistical significance of the tumor size difference at the time of operation is unlikely to reflect disease biology or tumor growth rate but rather it is likely due to active screening and a more aggressive surgical approach in patients with a preidentified SDHB mutations. ('SDHB', 'Gene', (264, 268)) ('tumor', 'Disease', 'MESH:D009369', (125, 130)) ('mutations', 'Var', (269, 278)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('tumor', 'Disease', 'MESH:D009369', (36, 41)) ('tumor', 'Disease', (125, 130)) ('patients', 'Species', '9606', (234, 242)) ('tumor', 'Phenotype', 'HP:0002664', (36, 41)) ('SDHB', 'Gene', '6390', (264, 268)) ('tumor', 'Disease', (36, 41)) 10123 24169168 Thus, these data suggest that delaying resection until a predetermined size (2 cm or larger) does not provide optimal disease control in patients with known SDHB mutations. ('SDHB', 'Gene', (157, 161)) ('mutations', 'Var', (162, 171)) ('patients', 'Species', '9606', (137, 145)) ('SDHB', 'Gene', '6390', (157, 161)) 10129 24169168 This indicates that aggressive resection of carotid body paragangliomas in patients with germ line SDHB mutations, regardless of size or clinical symptoms, would result in safer operations and that the earlier intervention is justified to reduce the risk of disease recurrence. ('carotid body paragangliomas', 'Phenotype', 'HP:0100635', (44, 71)) ('mutations', 'Var', (104, 113)) ('patients', 'Species', '9606', (75, 83)) ('SDHB', 'Gene', '6390', (99, 103)) ('SDHB', 'Gene', (99, 103)) ('carotid body paragangliomas', 'Disease', (44, 71)) ('paraganglioma', 'Phenotype', 'HP:0002668', (57, 70)) ('paragangliomas', 'Phenotype', 'HP:0002668', (57, 71)) ('carotid body paragangliomas', 'Disease', 'MESH:D002345', (44, 71)) ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (44, 70)) 10131 24169168 Our results, however, suggest that a clinical trial comparing active surveillance with surgical treatment may be warranted in patients without germ line SDHB mutations. ('SDHB', 'Gene', (153, 157)) ('mutations', 'Var', (158, 167)) ('patients', 'Species', '9606', (126, 134)) ('SDHB', 'Gene', '6390', (153, 157)) 10134 24169168 In addition, the presence of noncarotid body paragangliomas was not associated with reduced DFS, and when patients with synchronous noncarotid body tumors were excluded, there was still a trend toward worse DFS (due to local recurrence, P = 0.10) inpatients with SDHB mutations. ('DFS', 'MPA', (207, 210)) ('SDHB', 'Gene', (263, 267)) ('synchronous noncarotid body tumors', 'Disease', (120, 154)) ('carotid body paragangliomas', 'Phenotype', 'HP:0100635', (32, 59)) ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('carotid body tumors', 'Phenotype', 'HP:0002668', (135, 154)) ('synchronous noncarotid body tumors', 'Disease', 'MESH:D009378', (120, 154)) ('carotid body paragangliomas', 'Disease', (32, 59)) ('tumors', 'Phenotype', 'HP:0002664', (148, 154)) ('mutations', 'Var', (268, 277)) ('DFS', 'MPA', (92, 95)) ('patients', 'Species', '9606', (249, 257)) ('paraganglioma', 'Phenotype', 'HP:0002668', (45, 58)) ('paragangliomas', 'Phenotype', 'HP:0002668', (45, 59)) ('carotid body tumor', 'Phenotype', 'HP:0002668', (135, 153)) ('patients', 'Species', '9606', (106, 114)) ('worse', 'NegReg', (201, 206)) ('noncarotid body tumors', 'Phenotype', 'HP:0002668', (132, 154)) ('carotid body paragangliomas', 'Disease', 'MESH:D002345', (32, 59)) ('SDHB', 'Gene', '6390', (263, 267)) ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (32, 58)) 10135 24169168 The clinical applicability of these data is dependent on the patient having a known germ line SDHB mutation before developing a carotid body paraganglioma. ('patient', 'Species', '9606', (61, 68)) ('SDHB', 'Gene', (94, 98)) ('mutation', 'Var', (99, 107)) ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (128, 154)) ('paraganglioma', 'Phenotype', 'HP:0002668', (141, 154)) ('carotid body paraganglioma', 'Disease', 'MESH:D002345', (128, 154)) ('carotid body paraganglioma', 'Disease', (128, 154)) ('SDHB', 'Gene', '6390', (94, 98)) 10140 24169168 In summary, our results indicate that patients with carotid body paragangliomas in the setting of germ line SDHB mutations are more likely to develop locoregional recurrence or metastatic disease than patients with non-SDHB mutations. ('patients', 'Species', '9606', (201, 209)) ('SDHB', 'Gene', (108, 112)) ('metastatic disease', 'CPA', (177, 195)) ('carotid body paragangliomas', 'Disease', (52, 79)) ('carotid body paragangliomas', 'Disease', 'MESH:D002345', (52, 79)) ('locoregional recurrence', 'CPA', (150, 173)) ('paragangliomas', 'Phenotype', 'HP:0002668', (65, 79)) ('carotid body paragangliomas', 'Phenotype', 'HP:0100635', (52, 79)) ('develop', 'PosReg', (142, 149)) ('paraganglioma', 'Phenotype', 'HP:0002668', (65, 78)) ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (52, 78)) ('mutations', 'Var', (113, 122)) ('SDHB', 'Gene', '6390', (219, 223)) ('patients', 'Species', '9606', (38, 46)) ('SDHB', 'Gene', '6390', (108, 112)) ('SDHB', 'Gene', (219, 223)) 10141 24169168 These outcomes are observed despite the fact that, on average, patients with SDHB mutations had surgical interventions for smaller tumors. ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('SDHB', 'Gene', '6390', (77, 81)) ('tumors', 'Phenotype', 'HP:0002664', (131, 137)) ('mutations', 'Var', (82, 91)) ('patients', 'Species', '9606', (63, 71)) ('SDHB', 'Gene', (77, 81)) ('tumors', 'Disease', 'MESH:D009369', (131, 137)) ('tumors', 'Disease', (131, 137)) 10142 24169168 Our data challenge the notion that only tumor size should drive operative decision making in the absence of symptoms and indicate that patients with SDHB mutations should be surgical candidates even when only small carotid body tumors are detected. ('patients', 'Species', '9606', (135, 143)) ('SDHB', 'Gene', '6390', (149, 153)) ('SDHB', 'Gene', (149, 153)) ('tumor', 'Disease', 'MESH:D009369', (228, 233)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('tumor', 'Disease', 'MESH:D009369', (40, 45)) ('tumor', 'Phenotype', 'HP:0002664', (228, 233)) ('carotid body tumors', 'Phenotype', 'HP:0002668', (215, 234)) ('carotid body tumors', 'Disease', 'MESH:D002345', (215, 234)) ('tumors', 'Phenotype', 'HP:0002664', (228, 234)) ('tumor', 'Disease', (228, 233)) ('mutations', 'Var', (154, 163)) ('carotid body tumors', 'Disease', (215, 234)) ('tumor', 'Disease', (40, 45)) ('carotid body tumor', 'Phenotype', 'HP:0002668', (215, 233)) 10143 24169168 Conversely, more conservative management based on symptoms, tumor size, and absence of invasive imaging tumor characteristics may be justified in patients without germ line SDHB mutations. ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('SDHB', 'Gene', '6390', (173, 177)) ('tumor', 'Disease', (104, 109)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('SDHB', 'Gene', (173, 177)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('absence of invasive imaging tumor', 'Disease', 'MESH:C564543', (76, 109)) ('absence of invasive imaging tumor', 'Disease', (76, 109)) ('tumor', 'Disease', (60, 65)) ('mutations', 'Var', (178, 187)) ('patients', 'Species', '9606', (146, 154)) ('tumor', 'Disease', 'MESH:D009369', (104, 109)) 10201 31397861 These findings suggest that cortical-sparing surgery may be the preferred approach for patients at risk for, or diagnosed with, bilateral pheochromocytomas, especially those harboring a germline mutation in one of the known predisposition genes. ('germline mutation', 'Var', (186, 203)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (138, 154)) ('bilateral pheochromocytomas', 'Disease', (128, 155)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (128, 155)) ('patients', 'Species', '9606', (87, 95)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (138, 155)) 10208 31397861 In 505 of 526 tested patients (96%), germline mutations were detected in the genes RET (282 patients [54%]), VHL (184 patients [35%]), and other genes (39 patients [7%]). ('VHL', 'Disease', (109, 112)) ('VHL', 'Disease', 'MESH:D006623', (109, 112)) ('germline mutations', 'Var', (37, 55)) ('RET', 'Gene', '5979', (83, 86)) ('patients', 'Species', '9606', (92, 100)) ('patients', 'Species', '9606', (21, 29)) ('RET', 'Gene', (83, 86)) ('patients', 'Species', '9606', (155, 163)) ('detected', 'Reg', (61, 69)) ('patients', 'Species', '9606', (118, 126)) 10221 31397861 Bilateral pheochromocytomas are often heritable and have been shown to occur mainly in patients with multiple endocrine neoplasia type 2 (MEN 2) caused by germline mutations of the RET (rearranged during transfection) proto-oncogene, von Hippel-Lindau disease (VHL; VHL gene) and the paragangliomas syndromes types 1 and 4 caused by mutations in the succinate dehydrogenase (SDH) subunit D (SDHD) and B (SDHB) genes, respectively. ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (234, 259)) ('SDHB', 'Gene', '6390', (404, 408)) ('VHL', 'Disease', 'MESH:D006623', (261, 264)) ('paragangliomas syndromes', 'Disease', 'MESH:D010235', (284, 308)) ('SDH', 'Gene', (375, 378)) ('paraganglioma', 'Phenotype', 'HP:0002668', (284, 297)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (10, 27)) ('von Hippel-Lindau disease', 'Disease', (234, 259)) ('succinate dehydrogenase', 'Gene', (350, 373)) ('caused by', 'Reg', (145, 154)) ('multiple endocrine neoplasia type 2', 'Disease', (101, 136)) ('SDHB', 'Gene', (404, 408)) ('SDH', 'Gene', (391, 394)) ('SDH', 'Gene', '6390', (404, 407)) ('neoplasia', 'Phenotype', 'HP:0002664', (120, 129)) ('mutations', 'Var', (333, 342)) ('paragangliomas', 'Phenotype', 'HP:0002668', (284, 298)) ('VHL', 'Disease', 'MESH:D006623', (266, 269)) ('RET', 'Gene', '5979', (181, 184)) ('VHL', 'Disease', (261, 264)) ('subunit D (SDHD) and B', 'Gene', '6392', (380, 402)) ('Bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (0, 27)) ('mutations', 'Var', (164, 173)) ('succinate dehydrogenase', 'Gene', '6390', (350, 373)) ('caused by', 'Reg', (323, 332)) ('SDH', 'Gene', (404, 407)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (101, 136)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (10, 26)) ('Bilateral pheochromocytomas', 'Disease', (0, 27)) ('SDH', 'Gene', '6390', (375, 378)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (110, 129)) ('paragangliomas syndromes', 'Disease', (284, 308)) ('RET', 'Gene', (181, 184)) ('MEN', 'Species', '9606', (138, 141)) ('SDH', 'Gene', '6390', (391, 394)) ('patients', 'Species', '9606', (87, 95)) ('VHL', 'Disease', (266, 269)) 10246 31397861 Registrants were classified as mutation negative if they had no pathogenic DNA variant in these 9 genes and no clinical evidence for NF-1. ('NF-1', 'Gene', '4763', (133, 137)) ('variant', 'Var', (79, 86)) ('NF-1', 'Gene', (133, 137)) 10261 31397861 Mutations of RET were present in 282 patients, VHL in 184, NF1 in 17, MAX in 9, SDHD in 7, TMEM127 in 5, and SDHB in 1 (Table 1). ('VHL', 'Disease', 'MESH:D006623', (47, 50)) ('SDHD', 'Gene', (80, 84)) ('VHL', 'Disease', (47, 50)) ('RET', 'Gene', (13, 16)) ('SDHB', 'Gene', '6390', (109, 113)) ('patients', 'Species', '9606', (37, 45)) ('SDHB', 'Gene', (109, 113)) ('TMEM127', 'Gene', (91, 98)) ('TMEM127', 'Gene', '55654', (91, 98)) ('MAX', 'Gene', '4149', (70, 73)) ('MAX', 'Gene', (70, 73)) ('Mutations', 'Var', (0, 9)) ('NF1', 'Gene', (59, 62)) ('RET', 'Gene', '5979', (13, 16)) ('present', 'Reg', (22, 29)) ('NF1', 'Gene', '4763', (59, 62)) ('SDHD', 'Gene', '6392', (80, 84)) 10279 31397861 Of the 8 patients with metastatic pheochromocytoma, 4 patients had germline mutation in VHL, 1 in MAX, and 1 in RET. ('patients', 'Species', '9606', (9, 17)) ('germline mutation', 'Var', (67, 84)) ('patients', 'Species', '9606', (54, 62)) ('RET', 'Gene', (112, 115)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (34, 50)) ('RET', 'Gene', '5979', (112, 115)) ('pheochromocytoma', 'Disease', (34, 50)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (34, 50)) ('MAX', 'Gene', '4149', (98, 101)) ('VHL', 'Disease', (88, 91)) ('MAX', 'Gene', (98, 101)) ('VHL', 'Disease', 'MESH:D006623', (88, 91)) 10313 31397861 The most frequent mutations in our cohort involve RET leading to MEN 2 and VHL leading to VHL disease. ('VHL', 'Disease', (75, 78)) ('RET', 'Gene', (50, 53)) ('VHL disease', 'Disease', (90, 101)) ('VHL', 'Disease', (90, 93)) ('MEN', 'Species', '9606', (65, 68)) ('VHL', 'Disease', 'MESH:D006623', (90, 93)) ('VHL disease', 'Disease', 'MESH:D006623', (90, 101)) ('RET', 'Gene', '5979', (50, 53)) ('MEN', 'Gene', (65, 68)) ('VHL', 'Disease', 'MESH:D006623', (75, 78)) ('mutations', 'Var', (18, 27)) 10314 31397861 Although personal and family histories are important in diagnosing heritable pheochromocytoma, patients with an underlying germline mutation often present without hallmark clinical features suggestive of a particular hereditary syndrome. ('particular hereditary syndrome', 'Disease', (206, 236)) ('patients', 'Species', '9606', (95, 103)) ('particular hereditary syndrome', 'Disease', 'MESH:D009386', (206, 236)) ('pheochromocytoma', 'Disease', (77, 93)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (77, 93)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (77, 93)) ('germline mutation', 'Var', (123, 140)) 10315 31397861 Availability of DNA sequencing provides a powerful diagnostic tool to identify such mutations in patients with apparently sporadic pheochromocytoma. ('pheochromocytoma', 'Disease', (131, 147)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (131, 147)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (131, 147)) ('mutations', 'Var', (84, 93)) ('patients', 'Species', '9606', (97, 105)) 10329 31397861 Cortical-sparing adrenalectomy should be considered in patients with (1) bilateral pheochromocytomas, (2) tumor size less than 5 cm, or (3) high likelihood of a predisposing mutation leading to high risk of metachronous pheochromocytoma in the future. ('bilateral pheochromocytomas', 'Disease', (73, 100)) ('mutation', 'Var', (174, 182)) ('metachronous pheochromocytoma', 'Disease', (207, 236)) ('tumor', 'Disease', 'MESH:D009369', (106, 111)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (73, 100)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (83, 100)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('patients', 'Species', '9606', (55, 63)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (220, 236)) ('metachronous pheochromocytoma', 'Disease', 'MESH:D010673', (207, 236)) ('tumor', 'Disease', (106, 111)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (83, 99)) 10338 30214218 It is caused by mutations in the NF1 gene that lead to the production of nonfunctional neurofibromin that cannot regulate cell growth or division, which generates increased risk for various benign and malignant tumors. ('neurofibromin', 'Gene', '4763', (87, 100)) ('malignant tumors', 'Disease', 'MESH:D018198', (201, 217)) ('NF1', 'Gene', (33, 36)) ('lead to', 'Reg', (47, 54)) ('benign', 'CPA', (190, 196)) ('mutations', 'Var', (16, 25)) ('NF1', 'Gene', '4763', (33, 36)) ('neurofibromin', 'Gene', (87, 100)) ('production', 'MPA', (59, 69)) ('tumor', 'Phenotype', 'HP:0002664', (211, 216)) ('caused by', 'Reg', (6, 15)) ('tumors', 'Phenotype', 'HP:0002664', (211, 217)) ('malignant tumors', 'Disease', (201, 217)) 10395 30214218 Vascular abnormalities that can occur in NF1 patients are stenosis, aneurysms, and arteriovenous malformations due to cellular proliferation, degeneration, healing, and smooth-muscle loss and fibrosis caused by deficiency in neurofibromin with proliferation of the vessel wall. ('patients', 'Species', '9606', (45, 53)) ('stenosis', 'Disease', (58, 66)) ('arteriovenous malformations', 'Disease', 'MESH:D001165', (83, 110)) ('fibrosis', 'Disease', (192, 200)) ('cellular proliferation', 'CPA', (118, 140)) ('fibrosis', 'Disease', 'MESH:D005355', (192, 200)) ('neurofibromin', 'Gene', '4763', (225, 238)) ('aneurysms', 'Disease', 'MESH:D000783', (68, 77)) ('aneurysms', 'Disease', (68, 77)) ('Vascular abnormalities', 'Phenotype', 'HP:0002597', (0, 22)) ('deficiency', 'Var', (211, 221)) ('degeneration', 'CPA', (142, 154)) ('loss', 'NegReg', (183, 187)) ('aneurysms', 'Phenotype', 'HP:0002617', (68, 77)) ('arteriovenous malformations', 'Disease', (83, 110)) ('smooth-muscle', 'CPA', (169, 182)) ('NF1', 'Gene', '4763', (41, 44)) ('muscle loss', 'Phenotype', 'HP:0003202', (176, 187)) ('arteriovenous malformations', 'Phenotype', 'HP:0100026', (83, 110)) ('healing', 'CPA', (156, 163)) ('Vascular abnormalities', 'Disease', 'MESH:D000783', (0, 22)) ('Vascular abnormalities', 'Disease', (0, 22)) ('NF1', 'Gene', (41, 44)) ('neurofibromin', 'Gene', (225, 238)) 10400 30214218 In our case, Doppler ultrasonography of the renal arteries suggested a diagnosis of renal artery stenosis, and MR angiography, considered an alternative to conventional angiography, revealed reduced caliber of the abdominal aorta and celiac trunk, stenosis of the upper mesenteric artery, and bilateral renal artery stenosis. ('renal artery stenosis', 'Disease', 'MESH:D012078', (84, 105)) ('bilateral renal artery stenosis', 'Disease', 'MESH:D012078', (293, 324)) ('stenosis', 'Var', (248, 256)) ('celiac trunk', 'Phenotype', 'HP:0012327', (234, 246)) ('bilateral renal artery stenosis', 'Disease', (293, 324)) ('artery stenosis', 'Phenotype', 'HP:0100545', (309, 324)) ('reduced', 'NegReg', (191, 198)) ('artery stenosis', 'Phenotype', 'HP:0100545', (90, 105)) ('renal artery stenosis', 'Phenotype', 'HP:0001920', (303, 324)) ('renal artery stenosis', 'Disease', (84, 105)) ('renal artery stenosis', 'Disease', 'MESH:D012078', (303, 324)) ('caliber', 'MPA', (199, 206)) ('renal artery stenosis', 'Phenotype', 'HP:0001920', (84, 105)) 10471 30151422 Sudden release can cause congestive heart failure, pulmonary edema, myocardial infarction, ventricular fibrillation, and cerebrovascular accidents. ('pulmonary edema', 'Phenotype', 'HP:0100598', (51, 66)) ('edema', 'Phenotype', 'HP:0000969', (61, 66)) ('pulmonary edema', 'Disease', (51, 66)) ('congestive heart failure', 'Disease', (25, 49)) ('cerebrovascular accidents', 'Phenotype', 'HP:0001297', (121, 146)) ('cerebrovascular accidents', 'Disease', 'MESH:D020521', (121, 146)) ('ventricular fibrillation', 'Phenotype', 'HP:0001663', (91, 115)) ('heart failure', 'Phenotype', 'HP:0001635', (36, 49)) ('ventricular fibrillation', 'Disease', 'MESH:D014693', (91, 115)) ('Sudden release', 'Var', (0, 14)) ('congestive heart failure', 'Phenotype', 'HP:0001635', (25, 49)) ('congestive heart failure', 'Disease', 'MESH:D006333', (25, 49)) ('cerebrovascular accidents', 'Disease', (121, 146)) ('myocardial infarction', 'Disease', (68, 89)) ('cause', 'Reg', (19, 24)) ('ventricular fibrillation', 'Disease', (91, 115)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (68, 89)) ('pulmonary edema', 'Disease', 'MESH:D011654', (51, 66)) ('myocardial infarction', 'Disease', 'MESH:D009203', (68, 89)) 10477 30151422 Genetic mutations are classified into 2 groups, mutations involving the kinase signaling pathway (RET and NF1) and those with increased activity of the hypoxia-induced factor 1 (HIF-1alpha) transcription factor (VHL, SDHA, SDHB, SDHC, SDHD, and SDHAF2). ('SDHA', 'Gene', (217, 221)) ('HIF-1alpha', 'Gene', '3091', (178, 188)) ('VHL', 'Gene', (212, 215)) ('SDHA', 'Gene', '6389', (217, 221)) ('SDHB', 'Gene', (223, 227)) ('activity', 'MPA', (136, 144)) ('mutations', 'Var', (48, 57)) ('hypoxia', 'Disease', (152, 159)) ('RET', 'Gene', (98, 101)) ('kinase signaling pathway', 'Pathway', (72, 96)) ('SDHA', 'Gene', (245, 249)) ('VHL', 'Gene', '7428', (212, 215)) ('SDHC', 'Gene', '6391', (229, 233)) ('hypoxia', 'Disease', 'MESH:D000860', (152, 159)) ('HIF-1alpha', 'Gene', (178, 188)) ('SDHA', 'Gene', '6389', (245, 249)) ('SDHD', 'Gene', '6392', (235, 239)) ('NF1', 'Gene', '4763', (106, 109)) ('SDHAF2', 'Gene', '54949', (245, 251)) ('SDHAF2', 'Gene', (245, 251)) ('SDHD', 'Gene', (235, 239)) ('NF1', 'Gene', (106, 109)) ('SDHB', 'Gene', '6390', (223, 227)) ('SDHC', 'Gene', (229, 233)) ('RET', 'Gene', '5979', (98, 101)) 10478 30151422 Von Hippel-Lindau syndrome is associated with a mutation in the VHL tumor suppressor gene. ('associated', 'Reg', (30, 40)) ('VHL tumor', 'Disease', (64, 73)) ('mutation', 'Var', (48, 56)) ('Von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (0, 26)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('Von Hippel-Lindau syndrome', 'Disease', (0, 26)) ('VHL tumor', 'Disease', 'MESH:D006623', (64, 73)) 10483 30151422 Multiple endocrine neoplasia type 2 (MEN 2) syndrome with a prevalence of 1/40 000 individuals is associated with a mutation in the RET proto-oncogene that encodes for a receptor tyrosine kinase for glial-derived neurotropic factor. ('mutation', 'Var', (116, 124)) ('RET', 'Gene', '5979', (132, 135)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (9, 28)) ('neoplasia', 'Phenotype', 'HP:0002664', (19, 28)) ('Multiple endocrine neoplasia type 2 (MEN 2) syndrome', 'Disease', 'MESH:D018813', (0, 52)) ('associated', 'Reg', (98, 108)) ('RET', 'Gene', (132, 135)) 10488 30151422 Neurofibromatosis type 1 syndrome has an approximate frequency of 1 in 3000 and is associated with a NF1 gene mutation that codes for the protein neurofibromin. ('Neurofibromatosis type 1 syndrome', 'Disease', (0, 33)) ('NF1', 'Gene', (101, 104)) ('neurofibromin', 'Gene', '4763', (146, 159)) ('NF1', 'Gene', '4763', (101, 104)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (0, 17)) ('Neurofibromatosis type 1 syndrome', 'Disease', 'MESH:C537392', (0, 33)) ('associated', 'Reg', (83, 93)) ('neurofibromin', 'Gene', (146, 159)) ('mutation', 'Var', (110, 118)) 10494 30151422 Mutations involving these subunits affecting HIF-1alpha transcription factor lead to hereditary paraganglioma syndrome, a syndrome characterized by multiple paragangliomas and pheochromocytomas with a frequency of 1/300 000 (Table 3). ('paraganglioma', 'Phenotype', 'HP:0002668', (157, 170)) ('lead to', 'Reg', (77, 84)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (176, 192)) ('HIF-1alpha', 'Gene', '3091', (45, 55)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (176, 193)) ('HIF-1alpha', 'Gene', (45, 55)) ('paragangliomas', 'Phenotype', 'HP:0002668', (157, 171)) ('a syndrome', 'Disease', 'MESH:D013577', (108, 118)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('Mutations', 'Var', (0, 9)) ('paragangliomas and pheochromocytomas', 'Disease', 'MESH:D010673', (157, 193)) ('a syndrome', 'Disease', 'MESH:D013577', (120, 130)) ('gliomas', 'Phenotype', 'HP:0009733', (164, 171)) ('hereditary paraganglioma syndrome', 'Disease', 'MESH:D010235', (85, 118)) ('hereditary paraganglioma syndrome', 'Disease', (85, 118)) ('a syndrome', 'Disease', (120, 130)) 10495 30151422 Familial paraganglioma variants, types 1, 3, and 4 are associated with mutations in SDHD, SDHC, and SDHB genes, respectively. ('SDHB', 'Gene', '6390', (100, 104)) ('SDHD', 'Gene', '6392', (84, 88)) ('paraganglioma', 'Phenotype', 'HP:0002668', (9, 22)) ('associated', 'Reg', (55, 65)) ('SDHD', 'Gene', (84, 88)) ('SDHC', 'Gene', (90, 94)) ('mutations', 'Var', (71, 80)) ('SDHC', 'Gene', '6391', (90, 94)) ('variants', 'Var', (23, 31)) ('Familial paraganglioma', 'Disease', (0, 22)) ('Familial paraganglioma', 'Disease', 'MESH:D010235', (0, 22)) ('SDHB', 'Gene', (100, 104)) 10496 30151422 Familial paraganglioma type 5 is associated with mutation in SDHA and familial paraganglioma type 2 with mutation in SDHAF2 gene. ('SDHA', 'Gene', (61, 65)) ('SDHA', 'Gene', '6389', (117, 121)) ('mutation', 'Var', (105, 113)) ('Familial paraganglioma type', 'Disease', 'MESH:D010235', (0, 27)) ('SDHAF2', 'Gene', '54949', (117, 123)) ('SDHAF2', 'Gene', (117, 123)) ('familial paraganglioma type 2', 'Disease', (70, 99)) ('familial paraganglioma type 2', 'Disease', 'MESH:C566646', (70, 99)) ('SDHA', 'Gene', (117, 121)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('mutation', 'Var', (49, 57)) ('Familial paraganglioma type', 'Disease', (0, 27)) ('associated', 'Reg', (33, 43)) ('SDHA', 'Gene', '6389', (61, 65)) ('paraganglioma', 'Phenotype', 'HP:0002668', (9, 22)) 10500 30151422 Each of the above hereditary syndromes, involving mutations in the succinate dehydrogenase gene, must be considered when evaluating a patient with a pheochromocytoma and/or paraganglioma. ('paraganglioma', 'Disease', (173, 186)) ('pheochromocytoma', 'Disease', (149, 165)) ('mutations', 'Var', (50, 59)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (149, 165)) ('paraganglioma', 'Disease', 'MESH:D010235', (173, 186)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (149, 165)) ('paraganglioma', 'Phenotype', 'HP:0002668', (173, 186)) ('patient', 'Species', '9606', (134, 141)) 10501 30151422 Patients presenting at an early age with these neoplasms should be screened for mutations involving the succinate dehydrogenase gene. ('mutations', 'Var', (80, 89)) ('neoplasms', 'Phenotype', 'HP:0002664', (47, 56)) ('Patients', 'Species', '9606', (0, 8)) ('neoplasms', 'Disease', 'MESH:D009369', (47, 56)) ('neoplasms', 'Disease', (47, 56)) 10502 30151422 Immunohistochemistry for SDHB has been used to screen for succinate dehydrogenase mutations. ('mutations', 'Var', (82, 91)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDHB', 'Gene', (25, 29)) 10508 30151422 Twenty to forty percent of paragangliomas are malignant and malignancy is more common in chromaffin tumors associated with germline mutations. ('malignancy', 'Disease', (60, 70)) ('chromaffin', 'Chemical', '-', (89, 99)) ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('common', 'Reg', (79, 85)) ('paragangliomas', 'Disease', 'MESH:D010235', (27, 41)) ('associated', 'Reg', (107, 117)) ('tumors', 'Disease', (100, 106)) ('paragangliomas', 'Disease', (27, 41)) ('tumors', 'Disease', 'MESH:D009369', (100, 106)) ('germline mutations', 'Var', (123, 141)) ('tumors', 'Phenotype', 'HP:0002664', (100, 106)) ('paragangliomas', 'Phenotype', 'HP:0002668', (27, 41)) ('paraganglioma', 'Phenotype', 'HP:0002668', (27, 40)) ('chromaffin tumors', 'Phenotype', 'HP:0002666', (89, 106)) ('malignancy', 'Disease', 'MESH:D009369', (60, 70)) ('gliomas', 'Phenotype', 'HP:0009733', (34, 41)) 10518 30151422 Genetic mutations are classified into 2 groups, mutations involving the kinase signaling pathway (RET and NF1) and those with increased activity of the HIF-1alpha transcription factor (VHL, SDHA, SDHB, SDHC, SDHD, and SDHAF2). ('RET', 'Gene', '5979', (98, 101)) ('SDHD', 'Gene', '6392', (208, 212)) ('SDHA', 'Gene', '6389', (218, 222)) ('SDHB', 'Gene', '6390', (196, 200)) ('mutations', 'Var', (48, 57)) ('activity', 'MPA', (136, 144)) ('SDHC', 'Gene', (202, 206)) ('SDHD', 'Gene', (208, 212)) ('RET', 'Gene', (98, 101)) ('kinase signaling pathway', 'Pathway', (72, 96)) ('SDHA', 'Gene', (190, 194)) ('SDHB', 'Gene', (196, 200)) ('HIF-1alpha', 'Gene', '3091', (152, 162)) ('SDHA', 'Gene', '6389', (190, 194)) ('VHL', 'Gene', (185, 188)) ('NF1', 'Gene', '4763', (106, 109)) ('SDHC', 'Gene', '6391', (202, 206)) ('HIF-1alpha', 'Gene', (152, 162)) ('NF1', 'Gene', (106, 109)) ('SDHAF2', 'Gene', '54949', (218, 224)) ('SDHAF2', 'Gene', (218, 224)) ('VHL', 'Gene', '7428', (185, 188)) ('SDHA', 'Gene', (218, 222)) 10547 28974878 The risk factors for pediatric malignant pheochromocytoma include the extra-adrenal location, primary tumor >6 cm, sporadic nature, gland weight >250 g, and early onset postoperative hypertension. ('>250', 'Var', (145, 149)) ('postoperative hypertension', 'Disease', 'MESH:D006973', (169, 195)) ('tumor', 'Disease', 'MESH:D009369', (102, 107)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (31, 57)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (41, 57)) ('malignant pheochromocytoma', 'Disease', (31, 57)) ('pediatric', 'Disease', (21, 30)) ('tumor', 'Disease', (102, 107)) ('postoperative hypertension', 'Disease', (169, 195)) ('hypertension', 'Phenotype', 'HP:0000822', (183, 195)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) 10634 27561909 Phenoxybenzamine provides irreversible inhibition of both alpha-1 and alpha-2 receptors. ('alpha-2 receptors', 'Protein', (70, 87)) ('alpha-1', 'Gene', (58, 65)) ('Phenoxybenzamine', 'Var', (0, 16)) ('inhibition', 'NegReg', (39, 49)) ('Phenoxybenzamine', 'Chemical', 'MESH:D010643', (0, 16)) ('alpha-1', 'Gene', '146', (58, 65)) 10652 27561909 Additionally, patients receiving phenoxybenzamine were titrated to the point of developing orthostatic hypotension, which suggested loss of the baroreceptor reflex and achievement of complete blockade. ('orthostatic hypotension', 'Disease', 'MESH:D007024', (91, 114)) ('phenoxybenzamine', 'Var', (33, 49)) ('baroreceptor reflex', 'MPA', (144, 163)) ('loss', 'NegReg', (132, 136)) ('hypotension', 'Phenotype', 'HP:0002615', (103, 114)) ('orthostatic hypotension', 'Disease', (91, 114)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (33, 49)) ('patients', 'Species', '9606', (14, 22)) ('orthostatic hypotension', 'Phenotype', 'HP:0001278', (91, 114)) 10706 27561909 Intra-operative hypotension and increased post-operative support were associated with selective blockade, but complications and hospital stay were similar between those blocked selectively and non-selectively. ('hypotension', 'Disease', 'MESH:D007022', (16, 27)) ('hypotension', 'Disease', (16, 27)) ('selective blockade', 'Var', (86, 104)) ('increased', 'PosReg', (32, 41)) ('hypotension', 'Phenotype', 'HP:0002615', (16, 27)) ('-operative hypotension', 'Phenotype', 'HP:0001278', (5, 27)) 10718 24213114 The treatment of bulky tumors by radionuclides that emit high energy alpha or beta particles is the preferred approach (Tables 1 and 2); however, for the eradication of small clusters of cancer cells or small tumor deposits, radionuclides that emit Auger electrons are considered to be beneficial because of their high level of cytotoxicity and short-range biological effectiveness. ('cancer', 'Disease', 'MESH:D009369', (187, 193)) ('tumor deposits', 'Disease', 'MESH:D000079822', (209, 223)) ('tumors', 'Disease', (23, 29)) ('cytotoxicity', 'Disease', (328, 340)) ('tumors', 'Disease', 'MESH:D009369', (23, 29)) ('cancer', 'Disease', (187, 193)) ('radionuclide', 'Chemical', 'MESH:D011868', (225, 237)) ('men', 'Species', '9606', (9, 12)) ('tumor deposits', 'Disease', (209, 223)) ('radionuclide', 'Chemical', 'MESH:D011868', (33, 45)) ('cytotoxicity', 'Disease', 'MESH:D064420', (328, 340)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('cancer', 'Phenotype', 'HP:0002664', (187, 193)) ('tumor', 'Phenotype', 'HP:0002664', (209, 214)) ('tumors', 'Phenotype', 'HP:0002664', (23, 29)) ('radionuclides', 'Var', (225, 238)) 10720 24213114 It aims at destroying residual microscopic tumor tissue to reduce the recurrence rate, ablating remaining thyroid tissue to optimize follow-up conditions (e.g., thyroglobulin measurement), and completing staging by a highly sensitive post-therapeutic whole-body scintigraphy. ('recurrence rate', 'MPA', (70, 85)) ('thyroglobulin', 'Gene', (161, 174)) ('thyroglobulin', 'Gene', '7038', (161, 174)) ('tumor', 'Disease', 'MESH:D009369', (43, 48)) ('ablating', 'Var', (87, 95)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('reduce', 'NegReg', (59, 65)) ('tumor', 'Disease', (43, 48)) ('men', 'Species', '9606', (182, 185)) 10747 24213114 The duration of hormone withdrawal symptoms can be shortened with T3 supplement during this period and weaned for only 8-10 days prior to treatment. ('men', 'Species', '9606', (75, 78)) ('men', 'Species', '9606', (143, 146)) ('hormone', 'Disease', (16, 23)) ('T3 supplement', 'Var', (66, 79)) 10787 24213114 Many studies demonstrated the efficacy of Y-90-ibritumomab tiuxetan and I-131 tositumomab to be similar in patients with chemotherapy- refractory low-grade relapsed NHL, with an overall response rate of 60%-83% and a complete response (CR) rate of 15-52%. ('Y-90-ibritumomab tiuxetan', 'Chemical', 'MESH:C422802', (42, 67)) ('I-131 tositumomab', 'Disease', (72, 89)) ('I-131 tositumomab', 'Disease', 'MESH:D020754', (72, 89)) ('CR', 'Chemical', '-', (236, 238)) ('Y-90-ibritumomab', 'Var', (42, 58)) ('NHL', 'Phenotype', 'HP:0012539', (165, 168)) ('patients', 'Species', '9606', (107, 115)) 10788 24213114 Song et al., using Monte Carlo based dosimetry in patients with lung metastases, found that I-131 may provide a therapeutic advantage over Y-90, especially in tumors with a radius less than 2.0 cm, as well as with a lower tumor burden due to a shorter pathlength of the beta particle from I-131 radionuclide. ('therapeutic', 'MPA', (112, 123)) ('patients', 'Species', '9606', (50, 58)) ('tumor', 'Disease', 'MESH:D009369', (222, 227)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('I-131', 'Chemical', 'MESH:C000614965', (289, 294)) ('Y-90', 'Chemical', 'MESH:C000615496', (139, 143)) ('tumors', 'Disease', (159, 165)) ('lung metastases', 'Disease', 'MESH:D009362', (64, 79)) ('tumor', 'Disease', (159, 164)) ('tumors', 'Phenotype', 'HP:0002664', (159, 165)) ('tumor', 'Phenotype', 'HP:0002664', (222, 227)) ('lung metastases', 'Disease', (64, 79)) ('tumor', 'Disease', (222, 227)) ('radionuclide', 'Chemical', 'MESH:D011868', (295, 307)) ('tumors', 'Disease', 'MESH:D009369', (159, 165)) ('I-131', 'Chemical', 'MESH:C000614965', (92, 97)) ('tumor', 'Disease', 'MESH:D009369', (159, 164)) ('I-131', 'Var', (92, 97)) 10793 24213114 Radiolabeled monoclonal antibodies have been shown to be effective in patients with chemotherapy-refractory, low-grade, or transformed low-grade NHL. ('patients', 'Species', '9606', (70, 78)) ('low-grade', 'Var', (109, 118)) ('NHL', 'Phenotype', 'HP:0012539', (145, 148)) ('chemotherapy-refractory', 'Disease', (84, 107)) 10795 24213114 showed that advanced age, prior radiotherapy, less than a 75-cGy dose of total-body radiation, bulky disease (>=5 cm), prior anthracycline-containing chemotherapy regimens, and no response to the last chemotherapeutic regimen are predictive of a lower overall response rate. ('less', 'Var', (46, 50)) ('anthracycline', 'Chemical', 'MESH:D018943', (125, 138)) ('bulky', 'Disease', (95, 100)) ('men', 'Species', '9606', (222, 225)) ('overall response', 'MPA', (252, 268)) ('men', 'Species', '9606', (167, 170)) ('lower', 'NegReg', (246, 251)) 10819 24213114 [Y-90-DOTA0,Tyr3]Octreotide demonstrated a higher affinity for somatostatin receptor subtype 2 with a greater stability than with an In-111 radionuclide. ('Tyr3]Octreotide', 'Chemical', 'MESH:C045210', (12, 27)) ('[Y-90-DOTA0', 'Var', (0, 11)) ('Tyr3]', 'Var', (12, 17)) ('stability', 'MPA', (110, 119)) ('affinity', 'Interaction', (50, 58)) ('somatostatin', 'Gene', '6750', (63, 75)) ('[Y-90-DOTA0', 'Chemical', '-', (0, 11)) ('radionuclide', 'Chemical', 'MESH:D011868', (140, 152)) ('somatostatin', 'Gene', (63, 75)) 10836 24213114 Although results with [Y-90-DOTA0,Tyr3]octreotide and [Lu-177-DOTA0,Tyr3]octreotate appear promising, reported varied response rates. ('[Y-90-DOTA0', 'Chemical', '-', (22, 33)) ('[Lu-177-DOTA0', 'Var', (54, 67)) ('Tyr3]', 'Var', (34, 39)) ('Tyr3]', 'Var', (68, 73)) ('Tyr3]octreotide', 'Chemical', 'MESH:C045210', (34, 49)) ('[Y-90-DOTA0', 'Var', (22, 33)) ('[Lu-177-DOTA0,Tyr3]octreotate', 'Chemical', '-', (54, 83)) 10857 24213114 In a phase II study by Matthay et al., a group of patients with refractory neuroblastoma were treated with 18 mCi/kg (0.66 GBq/kg) I-131 MIBG and one third of the patients demonstrated hematopoietic toxicity requiring autologous hematopoietic stem cell support. ('GBq', 'Chemical', '-', (123, 126)) ('patients', 'Species', '9606', (163, 171)) ('hematopoietic toxicity', 'Disease', (185, 207)) ('patients', 'Species', '9606', (50, 58)) ('I-131 MIBG', 'Chemical', '-', (131, 141)) ('mCi', 'Gene', (110, 113)) ('neuroblastoma', 'Disease', 'MESH:D009447', (75, 88)) ('neuroblastoma', 'Disease', (75, 88)) ('I-131', 'Var', (131, 136)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (75, 88)) ('mCi', 'Gene', '622408', (110, 113)) ('hematopoietic toxicity', 'Disease', 'MESH:D019337', (185, 207)) 10860 24213114 In a retrospective study of 37 patients treated with I-131 MIBG in a total of 116 treatment sessions, the overall survival rate was 85% at five years and 70% at 10 years. ('men', 'Species', '9606', (87, 90)) ('I-131 MIBG', 'Chemical', '-', (53, 63)) ('patients', 'Species', '9606', (31, 39)) ('MIBG', 'Gene', (59, 63)) ('I-131', 'Var', (53, 58)) 10863 24213114 Although treatment of NETs with I-131 MIBG appears to be effective in symptomatic relief, further randomized studies are needed to evaluate its usefulness against chemotherapeutic agents. ('MIBG', 'Gene', (38, 42)) ('I-131 MIBG', 'Chemical', '-', (32, 42)) ('I-131', 'Var', (32, 37)) ('men', 'Species', '9606', (14, 17)) 10867 24213114 Intravenous administration of Sr-89 chloride, Sm-153-lexidronam, and Re-186-etidronate have been approved in different countries for the treatment of bone pain arising from osteoblastic or mixed osseous metastases. ('pain', 'Phenotype', 'HP:0012531', (155, 159)) ('men', 'Species', '9606', (142, 145)) ('Sr-89 chloride', 'Chemical', '-', (30, 44)) ('bone pain', 'Phenotype', 'HP:0002653', (150, 159)) ('Sm-153-lexidronam', 'Chemical', '-', (46, 63)) ('Re-186-etidronate', 'Chemical', '-', (69, 86)) ('osteoblastic', 'Disease', 'None', (173, 185)) ('bone pain', 'Disease', 'MESH:D010146', (150, 159)) ('osteoblastic', 'Disease', (173, 185)) ('osseous metastases', 'Disease', 'MESH:D009362', (195, 213)) ('osseous metastases', 'Disease', (195, 213)) ('Sm-153-lexidronam', 'Var', (46, 63)) ('bone pain', 'Disease', (150, 159)) 10871 24213114 In a comparison trial by Baczyk et al., with breast or prostate cancer patients, complete pain relief was seen in 40% of women and 40% of men treated using Sm-153, and 25% of women and 33% of men achieved complete relief with Sr-89, which appears to be similarly effective. ('pain', 'Phenotype', 'HP:0012531', (90, 94)) ('men', 'Species', '9606', (138, 141)) ('patients', 'Species', '9606', (71, 79)) ('breast or prostate cancer', 'Disease', (45, 70)) ('breast or prostate cancer', 'Disease', 'MESH:D011471', (45, 70)) ('pain', 'Disease', 'MESH:D010146', (90, 94)) ('prostate cancer', 'Phenotype', 'HP:0012125', (55, 70)) ('pain', 'Disease', (90, 94)) ('men', 'Species', '9606', (177, 180)) ('Sm-153', 'Var', (156, 162)) ('Sm-153', 'Chemical', 'MESH:C000615023', (156, 162)) ('women', 'Species', '9606', (175, 180)) ('Sr-89', 'Chemical', 'MESH:C025700', (226, 231)) ('men', 'Species', '9606', (192, 195)) ('men', 'Species', '9606', (123, 126)) ('cancer', 'Phenotype', 'HP:0002664', (64, 70)) ('women', 'Species', '9606', (121, 126)) 10873 24213114 compared the effect of treatment with Re-188-HEDP, Re-186-HEDP, Sm-153-EDTMP, and Sr-89 Chloride. ('Sm-153-EDTMP', 'Var', (64, 76)) ('men', 'Species', '9606', (28, 31)) ('HEDP', 'Chemical', 'MESH:D012968', (58, 62)) ('HEDP', 'Chemical', 'MESH:D012968', (45, 49)) ('Sr-89 Chloride', 'Chemical', '-', (82, 96)) ('Re-186-HEDP', 'Var', (51, 62)) ('Sm-153-EDTMP', 'Chemical', '-', (64, 76)) ('Re-188-HEDP', 'Var', (38, 49)) 10874 24213114 In total, 73% of patients reported pain relief (77% after Re-188, 67% after Re-186, 73% after Sm-153, and 72% after Sr-89; P = 0.268-0.846). ('pain', 'Phenotype', 'HP:0012531', (35, 39)) ('Sm-153', 'Chemical', 'MESH:C000615023', (94, 100)) ('Sm-153', 'Var', (94, 100)) ('pain', 'Disease', 'MESH:D010146', (35, 39)) ('pain', 'Disease', (35, 39)) ('Sr-89', 'Chemical', 'MESH:C025700', (116, 121)) ('patients', 'Species', '9606', (17, 25)) 10905 23888270 Germline loss-of-function SDH mutations are associated with several tumors such as pheochromocytoma and paraganglioma, gastrointestinal stromal tumor (GIST), and renal cell carcinoma (Hensen & Bayley; Kantorovich et al. ('tumors', 'Disease', 'MESH:D009369', (68, 74)) ('paraganglioma', 'Phenotype', 'HP:0002668', (104, 117)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (83, 99)) ('SDH', 'Gene', (26, 29)) ('renal cell carcinoma', 'Disease', (162, 182)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (162, 182)) ('loss-of-function', 'NegReg', (9, 25)) ('pheochromocytoma', 'Disease', (83, 99)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (83, 99)) ('tumors', 'Phenotype', 'HP:0002664', (68, 74)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (119, 149)) ('carcinoma', 'Phenotype', 'HP:0030731', (173, 182)) ('mutations', 'Var', (30, 39)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('paraganglioma', 'Disease', (104, 117)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (119, 149)) ('tumors', 'Disease', (68, 74)) ('paraganglioma', 'Disease', 'MESH:D010235', (104, 117)) ('GIST', 'Phenotype', 'HP:0100723', (151, 155)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (162, 182)) ('gastrointestinal stromal tumor', 'Disease', (119, 149)) ('SDH', 'Gene', '6390', (26, 29)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) 10907 23888270 Although SDH germline mutation may be accurately evaluated by gene sequencing, a few recent studies have shown very high sensitivity for immunohistochemical detection of SDH mutation in GIST, pheochromocytoma, and paraganglioma (Van Nederveen et al. ('paraganglioma', 'Disease', (214, 227)) ('mutation', 'Var', (174, 182)) ('SDH', 'Gene', '6390', (9, 12)) ('pheochromocytoma', 'Disease', (192, 208)) ('paraganglioma', 'Disease', 'MESH:D010235', (214, 227)) ('SDH', 'Gene', '6390', (170, 173)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (192, 208)) ('paraganglioma', 'Phenotype', 'HP:0002668', (214, 227)) ('GIST', 'Phenotype', 'HP:0100723', (186, 190)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (192, 208)) ('SDH', 'Gene', (170, 173)) ('SDH', 'Gene', (9, 12)) 10946 23888270 Tumor negativity for SDHA correlated with earlier age at diagnosis of breast cancer (P = 0.012) and with lower histologic grade (P = 0.062). ('lower', 'NegReg', (105, 110)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('SDHA', 'Gene', (21, 25)) ('breast cancer', 'Disease', 'MESH:D001943', (70, 83)) ('Tumor negativity', 'Var', (0, 16)) ('breast cancer', 'Disease', (70, 83)) ('breast cancer', 'Phenotype', 'HP:0003002', (70, 83)) ('cancer', 'Phenotype', 'HP:0002664', (77, 83)) ('SDHA', 'Gene', '6389', (21, 25)) 10951 23888270 Stromal SDHB negativity was associated with HER-2 negativity (P < 0.001, Table 6). ('SDHB', 'Gene', '6390', (8, 12)) ('HER-2', 'Gene', '2064', (44, 49)) ('negativity', 'Var', (13, 23)) ('SDHB', 'Gene', (8, 12)) ('HER-2', 'Gene', (44, 49)) ('negativity', 'MPA', (50, 60)) 10960 23888270 Germline defects in SDH, particularly in SDHA and SDHB, have been detected in several tumor types, including pheochromocytomas (Van Nederveen et al. ('SDHA', 'Gene', (41, 45)) ('SDH', 'Gene', (20, 23)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (109, 125)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (109, 126)) ('SDHA', 'Gene', '6389', (41, 45)) ('pheochromocytomas', 'Disease', (109, 126)) ('SDH', 'Gene', (50, 53)) ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('defects', 'Var', (9, 16)) ('SDH', 'Gene', (41, 44)) ('SDHB', 'Gene', '6390', (50, 54)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (109, 126)) ('detected', 'Reg', (66, 74)) ('SDH', 'Gene', '6390', (20, 23)) ('SDHB', 'Gene', (50, 54)) ('tumor', 'Disease', (86, 91)) ('SDH', 'Gene', '6390', (50, 53)) ('tumor', 'Disease', 'MESH:D009369', (86, 91)) ('SDH', 'Gene', '6390', (41, 44)) 10963 23888270 Until recently, the accurate detection of SDH mutation depended primarily on direct sequencing and western blotting, methods that a clinical laboratory may find too costly and time-consuming. ('SDH', 'Gene', (42, 45)) ('mutation', 'Var', (46, 54)) ('SDH', 'Gene', '6390', (42, 45)) 10965 23888270 demonstrated the high sensitivity of immunohistochemical methods to detect germline mutations in SDH (Van Nederveen et al.). ('germline mutations', 'Var', (75, 93)) ('SDH', 'Gene', '6390', (97, 100)) ('SDH', 'Gene', (97, 100)) 10966 23888270 While the tumors with SDHB, SDHC, or SDHD germline mutations exhibited a loss of SDHB immmunoexpression with intact SDHA expression, tumors with SDHA germline mutations exhibited a loss of expression of both SDHA and SDHB. ('mutations', 'Var', (51, 60)) ('tumors', 'Disease', (10, 16)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('SDHA', 'Gene', (145, 149)) ('SDHB', 'Gene', (81, 85)) ('SDHA', 'Gene', (208, 212)) ('immmunoexpression', 'MPA', (86, 103)) ('tumors', 'Phenotype', 'HP:0002664', (133, 139)) ('SDHA', 'Gene', '6389', (145, 149)) ('SDHC', 'Gene', (28, 32)) ('SDHB', 'Gene', '6390', (22, 26)) ('tumors', 'Disease', 'MESH:D009369', (10, 16)) ('SDHA', 'Gene', '6389', (208, 212)) ('loss', 'NegReg', (73, 77)) ('tumors', 'Disease', (133, 139)) ('SDHD', 'Gene', '6392', (37, 41)) ('SDHB', 'Gene', (22, 26)) ('SDHB', 'Gene', '6390', (217, 221)) ('SDHA', 'Gene', (116, 120)) ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('tumors', 'Disease', 'MESH:D009369', (133, 139)) ('tumors', 'Phenotype', 'HP:0002664', (10, 16)) ('SDHB', 'Gene', '6390', (81, 85)) ('SDHD', 'Gene', (37, 41)) ('expression', 'MPA', (189, 199)) ('SDHA', 'Gene', '6389', (116, 120)) ('SDHC', 'Gene', '6391', (28, 32)) ('loss', 'NegReg', (181, 185)) ('SDHB', 'Gene', (217, 221)) 10967 23888270 Using similar methods in the present study, we found that 23 of 721 breast cancer patients (3.19%) had SDHA mutation (SDHA-/SDHB- expression) and one patient (0.1%) had an SDHB mutation (SHDA+/SDHB- expression; Table 7). ('SDHB', 'Gene', (124, 128)) ('SDHB', 'Gene', (172, 176)) ('patient', 'Species', '9606', (150, 157)) ('SDHB', 'Gene', '6390', (193, 197)) ('SDHB', 'Gene', (193, 197)) ('patient', 'Species', '9606', (82, 89)) ('breast cancer', 'Disease', 'MESH:D001943', (68, 81)) ('patients', 'Species', '9606', (82, 90)) ('SDHA', 'Gene', '6389', (118, 122)) ('breast cancer', 'Phenotype', 'HP:0003002', (68, 81)) ('SDHA', 'Gene', (103, 107)) ('breast cancer', 'Disease', (68, 81)) ('cancer', 'Phenotype', 'HP:0002664', (75, 81)) ('SDHA', 'Gene', (118, 122)) ('mutation', 'Var', (108, 116)) ('SDHB', 'Gene', '6390', (172, 176)) ('SDHA', 'Gene', '6389', (103, 107)) ('SDHB', 'Gene', '6390', (124, 128)) 10968 23888270 As few previous studies have evaluated SDH mutation in breast cancer, these findings provide a starting point for future investigations. ('SDH', 'Gene', (39, 42)) ('cancer', 'Phenotype', 'HP:0002664', (62, 68)) ('mutation', 'Var', (43, 51)) ('breast cancer', 'Disease', 'MESH:D001943', (55, 68)) ('breast cancer', 'Disease', (55, 68)) ('SDH', 'Gene', '6390', (39, 42)) ('breast cancer', 'Phenotype', 'HP:0003002', (55, 68)) 10969 23888270 However, a previous study reported that SDH germline mutations or variants occur in some patients with Cowden syndrome (CS) who do not present the expected PTEN mutation. ('PTEN', 'Gene', (156, 160)) ('PTEN', 'Gene', '5728', (156, 160)) ('variants', 'Var', (66, 74)) ('germline mutations', 'Var', (44, 62)) ('patients', 'Species', '9606', (89, 97)) ('SDH', 'Gene', '6390', (40, 43)) ('Cowden syndrome', 'Disease', 'MESH:D006223', (103, 118)) ('occur', 'Reg', (75, 80)) ('Cowden syndrome', 'Disease', (103, 118)) ('SDH', 'Gene', (40, 43)) 10971 23888270 Therefore, some breast cancer patients may be expected to have SDH mutations. ('SDH', 'Gene', '6390', (63, 66)) ('breast cancer', 'Disease', (16, 29)) ('SDH', 'Gene', (63, 66)) ('mutations', 'Var', (67, 76)) ('patients', 'Species', '9606', (30, 38)) ('cancer', 'Phenotype', 'HP:0002664', (23, 29)) ('breast cancer', 'Disease', 'MESH:D001943', (16, 29)) ('breast cancer', 'Phenotype', 'HP:0003002', (16, 29)) 10972 23888270 Findings in this study may be limited in that the sensitivity of immunohistochemistry in detecting SDH mutation as compared to direct sequencing has not been tested in breast cancer. ('breast cancer', 'Disease', 'MESH:D001943', (168, 181)) ('SDH', 'Gene', (99, 102)) ('breast cancer', 'Disease', (168, 181)) ('breast cancer', 'Phenotype', 'HP:0003002', (168, 181)) ('SDH', 'Gene', '6390', (99, 102)) ('mutation', 'Var', (103, 111)) ('cancer', 'Phenotype', 'HP:0002664', (175, 181)) 10974 23888270 To confirm SDH mutation, loss of SDH expression should be tested throughout the entire tumor (Barletta & Hornick), whereas in this study, immunohistochemistry was performed on the tissue microarray only. ('mutation', 'Var', (15, 23)) ('SDH', 'Gene', (33, 36)) ('tumor', 'Phenotype', 'HP:0002664', (87, 92)) ('SDH', 'Gene', (11, 14)) ('tumor', 'Disease', (87, 92)) ('SDH', 'Gene', '6390', (33, 36)) ('tumor', 'Disease', 'MESH:D009369', (87, 92)) ('expression', 'MPA', (37, 47)) ('SDH', 'Gene', '6390', (11, 14)) 10979 23888270 Several mechanisms have been proposed to explain the involvement of SDH mutation in tumorigenesis, among which a HIF-1alpha-pathway-dependent mechanism is the most famous. ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('involvement', 'Reg', (53, 64)) ('SDH', 'Gene', (68, 71)) ('HIF-1alpha', 'Gene', '3091', (113, 123)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('tumor', 'Disease', (84, 89)) ('HIF-1alpha', 'Gene', (113, 123)) ('mutation', 'Var', (72, 80)) ('SDH', 'Gene', '6390', (68, 71)) 10980 23888270 Loss-of-function mutation of SDH could result in an intracellular SDH accumulation, which in turn inhibits prolyl 4-hydroxylase (PHD), a negative regulator of HIF-1alpha (Cardaci & Ciriolo; Barletta & Hornick). ('Loss-of-function', 'NegReg', (0, 16)) ('SDH', 'Gene', '6390', (66, 69)) ('HIF-1alpha', 'Gene', (159, 169)) ('mutation', 'Var', (17, 25)) ('SDH', 'Gene', (66, 69)) ('prolyl 4-hydroxylase', 'MPA', (107, 127)) ('SDH', 'Gene', '6390', (29, 32)) ('HIF-1alpha', 'Gene', '3091', (159, 169)) ('inhibits', 'NegReg', (98, 106)) ('SDH', 'Gene', (29, 32)) 10982 23888270 As loss-of-function mutations in SDH are predicted to stabilize HIF-1alpha and upregulate HIF-1 transcriptional activity, we examined the expression of HIF-1alpha along with SDHA/SDHB. ('HIF-1', 'Gene', '3091', (152, 157)) ('loss-of-function', 'NegReg', (3, 19)) ('SDH', 'Gene', (179, 182)) ('HIF-1', 'Gene', (152, 157)) ('SDH', 'Gene', '6390', (33, 36)) ('HIF-1', 'Gene', (90, 95)) ('SDH', 'Gene', '6390', (174, 177)) ('SDHB', 'Gene', '6390', (179, 183)) ('HIF-1', 'Gene', '3091', (64, 69)) ('HIF-1alpha', 'Gene', '3091', (152, 162)) ('SDH', 'Gene', (33, 36)) ('HIF-1', 'Gene', (64, 69)) ('SDHA', 'Gene', (174, 178)) ('SDH', 'Gene', (174, 177)) ('HIF-1alpha', 'Gene', '3091', (64, 74)) ('SDHA', 'Gene', '6389', (174, 178)) ('SDHB', 'Gene', (179, 183)) ('mutations', 'Var', (20, 29)) ('SDH', 'Gene', '6390', (179, 182)) ('HIF-1alpha', 'Gene', (152, 162)) ('upregulate', 'PosReg', (79, 89)) ('HIF-1alpha', 'Gene', (64, 74)) ('HIF-1', 'Gene', '3091', (90, 95)) 10987 23888270 Based on these results, SDH mutation in breast cancer is associated with low histologic grade and a less aggressive molecular subtype. ('breast cancer', 'Disease', 'MESH:D001943', (40, 53)) ('SDH', 'Gene', '6390', (24, 27)) ('breast cancer', 'Disease', (40, 53)) ('breast cancer', 'Phenotype', 'HP:0003002', (40, 53)) ('mutation', 'Var', (28, 36)) ('SDH', 'Gene', (24, 27)) ('cancer', 'Phenotype', 'HP:0002664', (47, 53)) 10989 23888270 In earlier studies of SDH mutations in renal cell carcinomas (Baysal), GISTs (Miettinen et al. ('renal cell carcinomas', 'Disease', 'MESH:C538614', (39, 60)) ('GIST', 'Phenotype', 'HP:0100723', (71, 75)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (39, 60)) ('carcinoma', 'Phenotype', 'HP:0030731', (50, 59)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (39, 59)) ('mutations', 'Var', (26, 35)) ('renal cell carcinomas', 'Disease', (39, 60)) ('SDH', 'Gene', '6390', (22, 25)) ('carcinomas', 'Phenotype', 'HP:0030731', (50, 60)) ('SDH', 'Gene', (22, 25)) 11101 31689495 Molecular pathway elucidation, genomic studies, and systematic genetics screens reported over the last two decades have identified several FH-inactivation driven pathways alterations, as well as rationally conceived treatment strategies that specifically target FH-/- tumor cells. ('tumor', 'Phenotype', 'HP:0002664', (268, 273)) ('tumor', 'Disease', (268, 273)) ('FH', 'Gene', '2271', (139, 141)) ('FH', 'Gene', '2271', (262, 264)) ('alterations', 'Var', (171, 182)) ('tumor', 'Disease', 'MESH:D009369', (268, 273)) 11122 31689495 Enzymatic assay confirmed that the mutations ablated FH enzymatic function and that the mutation follows the Knudson's two hit hypothesis. ('ablated', 'NegReg', (45, 52)) ('FH', 'Gene', '2271', (53, 55)) ('mutations', 'Var', (35, 44)) 11126 31689495 Since the molecular mechanism of VHL syndrome was well characterized, it was hypothesized that FH, SDH, and VHL mutations all cause dysregulation to the same pathway. ('VHL', 'Gene', '7428', (108, 111)) ('dysregulation', 'MPA', (132, 145)) ('SDH', 'Gene', (99, 102)) ('cause', 'Reg', (126, 131)) ('VHL', 'Gene', (33, 36)) ('VHL syndrome', 'Disease', (33, 45)) ('mutations', 'Var', (112, 121)) ('VHL', 'Gene', '7428', (33, 36)) ('SDH', 'Gene', '6390', (99, 102)) ('VHL syndrome', 'Disease', 'MESH:D006623', (33, 45)) ('FH', 'Gene', '2271', (95, 97)) ('VHL', 'Gene', (108, 111)) 11135 31689495 These results point to several inconsistencies as to why FH mutation is more effective at activating HIF1A in fibroids as opposed to renal tumors, and why SDH mutant HPGL tumors show more consistent HIF1A activation. ('mutation', 'Var', (60, 68)) ('SDH', 'Gene', '6390', (155, 158)) ('renal tumors', 'Disease', 'MESH:D007674', (133, 145)) ('mutant', 'Var', (159, 165)) ('tumor', 'Phenotype', 'HP:0002664', (171, 176)) ('tumor', 'Phenotype', 'HP:0002664', (139, 144)) ('FH', 'Gene', '2271', (57, 59)) ('HPGL tumors', 'Disease', 'MESH:D009369', (166, 177)) ('HIF1A', 'Gene', (101, 106)) ('renal tumors', 'Disease', (133, 145)) ('HPGL tumors', 'Disease', (166, 177)) ('activating', 'MPA', (90, 100)) ('SDH', 'Gene', (155, 158)) ('tumors', 'Phenotype', 'HP:0002664', (139, 145)) ('renal tumors', 'Phenotype', 'HP:0009726', (133, 145)) ('tumors', 'Phenotype', 'HP:0002664', (171, 177)) 11136 31689495 To investigate tumorigenesis events that take place following biallelic FH inactivation, Pollard and co-workers developed a mouse model of Fh1 (mouse homolog of human FH) knockout. ('inactivation', 'Var', (75, 87)) ('human', 'Species', '9606', (161, 166)) ('mouse', 'Species', '10090', (144, 149)) ('tumor', 'Disease', 'MESH:D009369', (15, 20)) ('FH', 'Gene', '2271', (72, 74)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('mouse', 'Species', '10090', (124, 129)) ('knockout', 'Var', (171, 179)) ('Fh1', 'Gene', (139, 142)) ('tumor', 'Disease', (15, 20)) ('FH', 'Gene', '2271', (167, 169)) 11138 31689495 Thus, to investigate kidney tumorigenesis following Fh1 knockout, they conditionally knocked out Fh1 in the kidney using Ksp1.3/Cre. ('tumor', 'Disease', (28, 33)) ('Fh1', 'Gene', (97, 100)) ('knocked', 'Var', (85, 92)) ('tumor', 'Disease', 'MESH:D009369', (28, 33)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) 11140 31689495 None of the mice developed kidney tumors and immunohistochemical analyses showed an increase in nuclear HIF1A staining, and a moderate increase in nuclear HIF2A staining in the Fh1 knockout renal cyst. ('tumors', 'Phenotype', 'HP:0002664', (34, 40)) ('increase', 'PosReg', (135, 143)) ('kidney tumors', 'Disease', (27, 40)) ('Fh1', 'Gene', (177, 180)) ('renal cyst', 'Phenotype', 'HP:0000107', (190, 200)) ('kidney tumors', 'Phenotype', 'HP:0009726', (27, 40)) ('knockout', 'Var', (181, 189)) ('nuclear HIF2A staining', 'MPA', (147, 169)) ('kidney tumors', 'Disease', 'MESH:D007680', (27, 40)) ('mice', 'Species', '10090', (12, 16)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) 11142 31689495 Apart from the direct inhibition of prolyl hydroxylase by fumarate, it was also showed that FH inactivation increases cellular reactive oxygen species (ROS), which in turn drives constitutive HIF activation (Figure 2). ('constitutive HIF activation', 'MPA', (179, 206)) ('increases', 'PosReg', (108, 117)) ('cellular reactive oxygen species', 'MPA', (118, 150)) ('drives', 'PosReg', (172, 178)) ('fumarate', 'Chemical', 'MESH:D005650', (58, 66)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (127, 150)) ('ROS', 'Chemical', 'MESH:D017382', (152, 155)) ('FH', 'Gene', '2271', (92, 94)) ('inactivation', 'Var', (95, 107)) 11143 31689495 It is important to note that conditional Fh1 and Hif1a double knockout mice have been created, and the addition of the Hif1a knockout exacerbates the renal cyst development, suggesting that Hif1a activation is likely a compensatory mechanism and not a tumor promoting event. ('mice', 'Species', '10090', (71, 75)) ('knockout', 'Var', (125, 133)) ('renal cyst development', 'CPA', (150, 172)) ('addition', 'Var', (103, 111)) ('Hif1a', 'Gene', (49, 54)) ('Hif1a', 'Gene', (190, 195)) ('tumor', 'Disease', 'MESH:D009369', (252, 257)) ('Hif1a', 'Gene', '15251', (119, 124)) ('exacerbates', 'PosReg', (134, 145)) ('tumor', 'Phenotype', 'HP:0002664', (252, 257)) ('Hif1a', 'Gene', '15251', (49, 54)) ('tumor', 'Disease', (252, 257)) ('Hif1a', 'Gene', (119, 124)) ('renal cyst', 'Phenotype', 'HP:0000107', (150, 160)) ('Hif1a', 'Gene', '15251', (190, 195)) 11144 31689495 Genomic studies on HLRCC tumors begin with gene expression profiling of FH mutant and FH wild type uterine fibroids. ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('FH', 'Gene', '2271', (86, 88)) ('FH', 'Gene', '2271', (72, 74)) ('HLRCC tumors', 'Disease', 'MESH:C535516', (19, 31)) ('HLRCC tumors', 'Disease', (19, 31)) ('tumors', 'Phenotype', 'HP:0002664', (25, 31)) ('uterine fibroids', 'Phenotype', 'HP:0000131', (99, 115)) ('mutant', 'Var', (75, 81)) 11145 31689495 The study revealed that FH mutant fibroids over-expressed genes involved in carbohydrate metabolism, iron homeostasis, and oxidoreductases. ('FH', 'Gene', '2271', (24, 26)) ('mutant', 'Var', (27, 33)) ('iron', 'Chemical', 'MESH:D007501', (101, 105)) ('genes', 'Gene', (58, 63)) ('carbohydrate', 'Chemical', 'MESH:D002241', (76, 88)) ('over-expressed', 'PosReg', (43, 57)) 11146 31689495 Through the gene expression profiling analyses, a 7 gene classifier, consisting of LDHA, NQO1, LAMA2, BNIP3, MYO15B, CDKN1C and COL6A2, was able to accurately predict FH mutation status in fibroids, signifying that FH inactivation alters gene expression profile in a specific way. ('BNIP3', 'Gene', '664', (102, 107)) ('COL6A2', 'Gene', '1292', (128, 134)) ('MYO15B', 'Gene', '80022', (109, 115)) ('mutation', 'Var', (170, 178)) ('COL6A2', 'Gene', (128, 134)) ('CDKN1C', 'Gene', '1028', (117, 123)) ('LDHA', 'Gene', '3939', (83, 87)) ('inactivation', 'Var', (218, 230)) ('LAMA2', 'Gene', '3908', (95, 100)) ('predict', 'Reg', (159, 166)) ('LAMA2', 'Gene', (95, 100)) ('FH', 'Gene', '2271', (167, 169)) ('MYO15B', 'Gene', (109, 115)) ('NQO1', 'Gene', '1728', (89, 93)) ('CDKN1C', 'Gene', (117, 123)) ('alters', 'Reg', (231, 237)) ('BNIP3', 'Gene', (102, 107)) ('LDHA', 'Gene', (83, 87)) ('NQO1', 'Gene', (89, 93)) ('FH', 'Gene', '2271', (215, 217)) 11148 31689495 Similarly, gene expression profile analyses were performed to evaluate gene expression changes following Fh1 knockout in the kidney tissue of mice. ('Fh1', 'Gene', (105, 108)) ('knockout', 'Var', (109, 117)) ('mice', 'Species', '10090', (142, 146)) 11152 31689495 As expected, ccRCC, paraganglioma, and pheochromocytoma tumors that were known to harbor either VHL or SDH mutations were enriched for HIF1A signature, but HLRCC and the morphologically similar sporadic PRCC2 tumors did not show the enrichment of the HIF1A signature. ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('tumors', 'Disease', 'MESH:D009369', (209, 215)) ('paraganglioma', 'Disease', (20, 33)) ('tumors', 'Disease', (56, 62)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (39, 55)) ('paraganglioma', 'Disease', 'MESH:D010235', (20, 33)) ('pheochromocytoma tumors', 'Disease', 'MESH:D010673', (39, 62)) ('pheochromocytoma tumors', 'Disease', (39, 62)) ('SDH', 'Gene', '6390', (103, 106)) ('tumors', 'Disease', 'MESH:D009369', (56, 62)) ('tumors', 'Phenotype', 'HP:0002664', (209, 215)) ('paraganglioma', 'Phenotype', 'HP:0002668', (20, 33)) ('ccRCC', 'Disease', (13, 18)) ('VHL', 'Gene', (96, 99)) ('SDH', 'Gene', (103, 106)) ('tumor', 'Phenotype', 'HP:0002664', (209, 214)) ('tumors', 'Disease', (209, 215)) ('mutations', 'Var', (107, 116)) ('tumors', 'Phenotype', 'HP:0002664', (56, 62)) ('VHL', 'Gene', '7428', (96, 99)) 11155 31689495 These computational findings were empirically validated, revealing that fumarate accumulated following FH inactivation, which in turn activates NRF2 by covalently modifying C151 and C288 of Kelch Like ECH Associated Protein 1 (KEAP1), the bonafide negative regulator of NRF2, leading to sustained NRF2 activation. ('FH', 'Gene', '2271', (103, 105)) ('NRF2', 'Gene', (144, 148)) ('Kelch Like ECH Associated Protein 1', 'Gene', (190, 225)) ('inactivation', 'Var', (106, 118)) ('Kelch Like ECH Associated Protein 1', 'Gene', '9817', (190, 225)) ('modifying', 'Reg', (163, 172)) ('C151', 'Var', (173, 177)) ('activates', 'PosReg', (134, 143)) ('fumarate', 'Chemical', 'MESH:D005650', (72, 80)) ('C288', 'Var', (182, 186)) ('NRF2', 'Gene', (297, 301)) ('activation', 'PosReg', (302, 312)) 11159 31689495 Around the same time, a mouse model study involving the development of an Fh1/Hif1a double knockout mouse model also identified that Fh1 inactivation in mice drives an Nrf2 activation phenotype, reinforcing that NRF2 activation is one of the main cellular alterations following FH inactivation. ('inactivation', 'Var', (137, 149)) ('mouse', 'Species', '10090', (24, 29)) ('FH', 'Gene', '2271', (278, 280)) ('activation', 'PosReg', (173, 183)) ('Nrf2', 'Gene', '18024', (168, 172)) ('Hif1a', 'Gene', '15251', (78, 83)) ('mouse', 'Species', '10090', (100, 105)) ('Fh1', 'Gene', (133, 136)) ('Nrf2', 'Gene', (168, 172)) ('mice', 'Species', '10090', (153, 157)) ('Hif1a', 'Gene', (78, 83)) 11160 31689495 Unlike other subtypes of kidney cancer whereby the hereditary and sporadic forms of the tumors harbor mutations to the same tumor suppressor and oncogenes, the sporadic counterpart of HLRCC rarely harbors an FH mutation. ('tumors', 'Disease', 'MESH:D009369', (88, 94)) ('kidney cancer', 'Disease', 'MESH:D007680', (25, 38)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('tumor', 'Disease', 'MESH:D009369', (88, 93)) ('kidney cancer', 'Phenotype', 'HP:0009726', (25, 38)) ('tumor', 'Disease', (124, 129)) ('kidney cancer', 'Disease', (25, 38)) ('mutations', 'Var', (102, 111)) ('FH', 'Gene', '2271', (208, 210)) ('cancer', 'Phenotype', 'HP:0002664', (32, 38)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('HLRCC', 'Disease', (184, 189)) ('tumors', 'Phenotype', 'HP:0002664', (88, 94)) ('tumors', 'Disease', (88, 94)) ('tumor', 'Disease', (88, 93)) ('tumor', 'Disease', 'MESH:D009369', (124, 129)) 11161 31689495 The answer to this question came to light when our group utilized exome sequencing on carefully curated cases of PRCC2 and found that those tumor cases harbored gain-of-function NRF2 mutations and loss-of-function mutations to CUL3. ('mutations', 'Var', (183, 192)) ('NRF2', 'Gene', (178, 182)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('gain-of-function', 'PosReg', (161, 177)) ('tumor', 'Disease', 'MESH:D009369', (140, 145)) ('CUL3', 'Gene', '8452', (227, 231)) ('loss-of-function', 'NegReg', (197, 213)) ('CUL3', 'Gene', (227, 231)) ('tumor', 'Disease', (140, 145)) 11162 31689495 Functional studies confirmed the functional changes of the identified NRF2 and CUL3 mutations. ('mutations', 'Var', (84, 93)) ('NRF2', 'Gene', (70, 74)) ('CUL3', 'Gene', '8452', (79, 83)) ('CUL3', 'Gene', (79, 83)) 11163 31689495 Subsequently, The Cancer Genome Atlas (TCGA) reported in a larger cohort that mutations that drive sustained NRF2 activation, including NRF2 gain-of-function, KEAP1 loss-of-function, and CUL3 loss-of-function, were significantly enriched in sporadic PRCC2 cases, confirming our initial exome sequencing findings. ('activation', 'PosReg', (114, 124)) ('PRCC2', 'Disease', (250, 255)) ('loss-of-function', 'NegReg', (192, 208)) ('loss-of-function', 'NegReg', (165, 181)) ('mutations', 'Var', (78, 87)) ('CUL3', 'Gene', '8452', (187, 191)) ('Cancer', 'Phenotype', 'HP:0002664', (18, 24)) ('NRF2', 'Gene', (109, 113)) ('Cancer', 'Disease', 'MESH:D009369', (18, 24)) ('Cancer', 'Disease', (18, 24)) ('NRF2', 'Gene', (136, 140)) ('CUL3', 'Gene', (187, 191)) ('gain-of-function', 'PosReg', (141, 157)) 11183 31689495 The succination alters cellular iron homeostasis in HLRCC and induces a pro-proliferative signaling in HLRCC cells. ('pro-proliferative signaling', 'MPA', (72, 99)) ('cellular iron homeostasis', 'MPA', (23, 48)) ('induces', 'Reg', (62, 69)) ('succination', 'Var', (4, 15)) ('iron', 'Chemical', 'MESH:D007501', (32, 36)) ('alters', 'Reg', (16, 22)) 11186 31689495 While this study did not find pKa of the sulfhydryl group to be predictive of reactivity to fumarate, protonation of fumarate in an acidic environment was shown to encourage 2-SC formation. ('2-SC', 'Chemical', 'MESH:C511650', (174, 178)) ('fumarate', 'Chemical', 'MESH:D005650', (92, 100)) ('iron', 'Chemical', 'MESH:D007501', (142, 146)) ('2-SC formation', 'MPA', (174, 188)) ('fumarate', 'Chemical', 'MESH:D005650', (117, 125)) ('encourage', 'PosReg', (164, 173)) ('protonation', 'Var', (102, 113)) 11189 31689495 Tong and co-workers demonstrated that FH inactivation decreased the intracellular labile iron pool, which resulted in IRPs repression of HIF2A translation. ('iron', 'Chemical', 'MESH:D007501', (89, 93)) ('inactivation', 'Var', (41, 53)) ('translation', 'MPA', (143, 154)) ('repression', 'NegReg', (123, 133)) ('HIF2A', 'Gene', (137, 142)) ('decreased', 'NegReg', (54, 63)) ('intracellular labile iron pool', 'MPA', (68, 98)) ('FH', 'Gene', '2271', (38, 40)) 11190 31689495 Specifically, they showed that the absence of FH inactivates AMP-activated protein kinase (AMPK) which in turn suppresses divalent metal transporter 1 (DMT1) expression (Figure 4). ('divalent metal transporter 1', 'Gene', '4891', (122, 150)) ('DMT1', 'Gene', (152, 156)) ('DMT1', 'Gene', '4891', (152, 156)) ('expression', 'MPA', (158, 168)) ('divalent metal transporter 1', 'Gene', (122, 150)) ('AMPK', 'Gene', (91, 95)) ('AMP-activated protein kinase', 'Pathway', (61, 89)) ('AMPK', 'Gene', '5564', (91, 95)) ('FH', 'Gene', '2271', (46, 48)) ('absence', 'Var', (35, 42)) ('suppresses', 'NegReg', (111, 121)) ('inactivates', 'NegReg', (49, 60)) 11194 31689495 Interestingly, this differential HIF1A vs HIF2A activation is in discordance with the differential HIF1A vs HIF2A activation in ccRCC, which frequently harbors VHL loss-of-function mutations that lead to sustained HIF activation. ('ccRCC', 'Disease', (128, 133)) ('VHL', 'Gene', (160, 163)) ('loss-of-function', 'NegReg', (164, 180)) ('VHL', 'Gene', '7428', (160, 163)) ('mutations', 'Var', (181, 190)) 11196 31689495 Accordingly, aggressive ccRCC often harbors HIF1A loss-of-function mutations that lead to selective activation of HIF2A alone, suggesting a tumor suppressive role of HIF1A in ccRCC. ('HIF1A', 'Gene', (44, 49)) ('mutations', 'Var', (67, 76)) ('tumor', 'Disease', 'MESH:D009369', (140, 145)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('loss-of-function', 'NegReg', (50, 66)) ('activation', 'PosReg', (100, 110)) ('tumor', 'Disease', (140, 145)) 11206 31689495 As outlined in the earlier sections, biallelic FH inactivation imparts very significant changes to the transcriptome and the proteome. ('transcriptome', 'MPA', (103, 116)) ('inactivation', 'Var', (50, 62)) ('FH', 'Gene', '2271', (47, 49)) ('changes', 'Reg', (88, 95)) 11207 31689495 Since all cancer cells and only cancer cells in HLRCC patients harbor biallelic FH inactivation, biological changes driven by FH inactivation provide unique opportunities for targeted therapy. ('biallelic', 'Var', (70, 79)) ('cancer', 'Disease', 'MESH:D009369', (32, 38)) ('cancer', 'Disease', (32, 38)) ('patients', 'Species', '9606', (54, 62)) ('cancer', 'Phenotype', 'HP:0002664', (10, 16)) ('FH', 'Gene', '2271', (80, 82)) ('FH', 'Gene', '2271', (126, 128)) ('cancer', 'Phenotype', 'HP:0002664', (32, 38)) ('cancer', 'Disease', 'MESH:D009369', (10, 16)) ('cancer', 'Disease', (10, 16)) 11209 31689495 Particularly FH inactivation increases cellular dependency on glycolysis for ATP production. ('cellular dependency on glycolysis', 'MPA', (39, 72)) ('inactivation', 'Var', (16, 28)) ('increases', 'PosReg', (29, 38)) ('ATP', 'Chemical', 'MESH:D000255', (77, 80)) ('FH', 'Gene', '2271', (13, 15)) 11219 31689495 As such, heme biosynthesis and degradation serve to complete carbohydrate catabolism and glutaminolysis, while continually supplying the cells with NADH and biosynthetic precursors when the TCA cycle is truncated upon FH inactivation. ('TCA', 'Chemical', 'MESH:D014238', (190, 193)) ('degradation', 'MPA', (31, 42)) ('carbohydrate', 'Chemical', 'MESH:D002241', (61, 73)) ('carbohydrate catabolism', 'MPA', (61, 84)) ('heme', 'Chemical', 'MESH:D006418', (9, 13)) ('NADH', 'Chemical', 'MESH:D009243', (148, 152)) ('FH', 'Gene', '2271', (218, 220)) ('inactivation', 'Var', (221, 233)) ('glutaminolysis', 'MPA', (89, 103)) ('heme', 'MPA', (9, 13)) 11220 31689495 Inhibiting HMOX1 and heme biosynthesis stifled the cells' ability to complete carbohydrate and glutamine metabolism and resulted in conditional cell death (Figure 5). ('Inhibiting', 'Var', (0, 10)) ('HMOX1', 'Gene', (11, 16)) ('heme', 'Enzyme', (21, 25)) ('heme', 'Chemical', 'MESH:D006418', (21, 25)) ('HMOX1', 'Gene', '3162', (11, 16)) ('glutamine', 'Chemical', 'MESH:D005973', (95, 104)) ('carbohydrate', 'Chemical', 'MESH:D002241', (78, 90)) ('death', 'Disease', 'MESH:D003643', (149, 154)) ('death', 'Disease', (149, 154)) 11223 31689495 Specifically, C94 of GPX4 is succinated in FH-inactivated cells and the succinated form of GPX4 has reduced activity (Figure 5). ('FH', 'Gene', '2271', (43, 45)) ('activity', 'MPA', (108, 116)) ('GPX4', 'Gene', (91, 95)) ('GPX4', 'Gene', '2879', (91, 95)) ('succinate', 'Chemical', 'MESH:D019802', (29, 38)) ('GPX4', 'Gene', (21, 25)) ('GPX4', 'Gene', '2879', (21, 25)) ('C94', 'Var', (14, 17)) ('succinate', 'Chemical', 'MESH:D019802', (72, 81)) 11235 31689495 The screen identified the synthetic lethal combination of the pentose phosphate enzyme, phosphogluconate dehydrogenase (PGD) knockdown with FH-inactivation. ('phosphogluconate dehydrogenase', 'Gene', (88, 118)) ('knockdown', 'Var', (125, 134)) ('pentose phosphate', 'Chemical', 'MESH:D010428', (62, 79)) ('PGD', 'Gene', (120, 123)) ('phosphogluconate dehydrogenase', 'Gene', '5226', (88, 118)) ('PGD', 'Gene', '5226', (120, 123)) ('FH', 'Gene', '2271', (140, 142)) 11236 31689495 Mechanistically, PGD inhibition blocks glycolysis, suppresses reductive carboxylation of glutamine, and increases the NADP+/NADPH ratio to disrupt redox homeostasis (Figure 5). ('blocks', 'NegReg', (32, 38)) ('redox homeostasis', 'MPA', (147, 164)) ('glycolysis', 'MPA', (39, 49)) ('disrupt', 'Reg', (139, 146)) ('NADPH', 'Gene', '1666', (124, 129)) ('PGD', 'Gene', (17, 20)) ('increases', 'PosReg', (104, 113)) ('disrupt redox homeostasis', 'Phenotype', 'HP:0025463', (139, 164)) ('reductive carboxylation of glutamine', 'MPA', (62, 98)) ('inhibition', 'Var', (21, 31)) ('NADPH', 'Gene', (124, 129)) ('glutamine', 'Chemical', 'MESH:D005973', (89, 98)) ('NADP+', 'Chemical', 'MESH:D009249', (118, 123)) ('PGD', 'Gene', '5226', (17, 20)) ('suppresses', 'NegReg', (51, 61)) 11239 31689495 It is important to note that PGD loss-of-function mutation has been previously identified in the human population and is associated with occasional mild hemolytic anemia, suggesting that PGD inhibition should be well tolerated in human. ('PGD', 'Gene', '5226', (187, 190)) ('PGD', 'Gene', (29, 32)) ('hemolytic anemia', 'Disease', 'MESH:D000743', (153, 169)) ('PGD', 'Gene', '5226', (29, 32)) ('hemolytic anemia', 'Phenotype', 'HP:0001878', (153, 169)) ('human', 'Species', '9606', (97, 102)) ('anemia', 'Phenotype', 'HP:0001903', (163, 169)) ('mutation', 'Var', (50, 58)) ('human', 'Species', '9606', (230, 235)) ('hemolytic anemia', 'Disease', (153, 169)) ('PGD', 'Gene', (187, 190)) ('loss-of-function', 'NegReg', (33, 49)) 11250 31689495 This is an important study because a significant subset of lung cancer tumors harbor either somatic loss-of-function mutations to KEAP1 or somatic gain-of-function mutation to NRF2. ('lung cancer tumors', 'Disease', (59, 77)) ('mutations', 'Var', (117, 126)) ('KEAP1', 'Gene', (130, 135)) ('lung cancer tumors', 'Disease', 'MESH:D008175', (59, 77)) ('loss-of-function', 'NegReg', (100, 116)) ('gain-of-function', 'PosReg', (147, 163)) ('lung cancer', 'Phenotype', 'HP:0100526', (59, 70)) ('NRF2', 'Gene', (176, 180)) ('mutation', 'Var', (164, 172)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('cancer', 'Phenotype', 'HP:0002664', (64, 70)) 11251 31689495 The study utilized a small sgRNA library consisting of 65 sgRNA targeting 17 NRF2 target genes and found that tumors with sustained NRF2 activation is dependent on glutaminolysis for cellular bioenergetics, whereby inhibition of the glutaminase, GLS, could selectively kill cancer cells with sustained NRF2 activation (Figure 5). ('inhibition', 'Var', (215, 225)) ('cancer', 'Disease', 'MESH:D009369', (274, 280)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('glutaminase', 'Gene', (233, 244)) ('cancer', 'Disease', (274, 280)) ('tumors', 'Disease', (110, 116)) ('tumors', 'Disease', 'MESH:D009369', (110, 116)) ('tumors', 'Phenotype', 'HP:0002664', (110, 116)) ('glutaminase', 'Gene', '2744', (233, 244)) ('cancer', 'Phenotype', 'HP:0002664', (274, 280)) 11252 31689495 This is relevant to HLRCC because (as it was outlined in the earlier section), FH inactivation drives sustained NRF2 activation, a phenotype that unifies HLRCC with its sporadic counterpart, PRCC2. ('HLRCC', 'Disease', (154, 159)) ('FH', 'Gene', '2271', (79, 81)) ('activation', 'PosReg', (117, 127)) ('inactivation', 'Var', (82, 94)) ('NRF2', 'Gene', (112, 116)) 11258 31689495 Loss-of-heterozygosity is always detected in the tumor tissues indicating bialleic FH loss as the tumor initiating event. ('tumor', 'Disease', 'MESH:D009369', (49, 54)) ('Loss-of-heterozygosity', 'NegReg', (0, 22)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('FH loss', 'Disease', (83, 90)) ('tumor', 'Disease', 'MESH:D009369', (98, 103)) ('tumor', 'Disease', (49, 54)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('tumor', 'Disease', (98, 103)) ('bialleic', 'Var', (74, 82)) ('FH loss', 'Disease', 'MESH:D006938', (83, 90)) 11260 31689495 It is measured that fumarate accumulates to millimolar concentration in HLRCC cells, and at this high concentration, fumarate directly alters various cellular signaling pathways including: increased HIF1A activity, increased NRF2 activity, and attenuated cellular iron homeostasis. ('cellular iron homeostasis', 'MPA', (255, 280)) ('attenuated', 'NegReg', (244, 254)) ('fumarate', 'Chemical', 'MESH:D005650', (20, 28)) ('iron', 'Chemical', 'MESH:D007501', (264, 268)) ('activity', 'MPA', (205, 213)) ('increased', 'PosReg', (215, 224)) ('HIF1A', 'Enzyme', (199, 204)) ('activity', 'MPA', (230, 238)) ('alters', 'Reg', (135, 141)) ('fumarate', 'Chemical', 'MESH:D005650', (117, 125)) ('fumarate', 'Var', (117, 125)) ('cellular signaling pathways', 'Pathway', (150, 177)) ('NRF2', 'Enzyme', (225, 229)) ('increased', 'PosReg', (189, 198)) 11366 30258932 For example, in breast cancer, overexpression of NEAT1 promotes EMT and invasion in vitro as well as dissemination and metastasis in vivo. ('breast cancer', 'Disease', (16, 29)) ('overexpression', 'Var', (31, 45)) ('promotes', 'PosReg', (55, 63)) ('NEAT1', 'Gene', '283131', (49, 54)) ('NEAT1', 'Gene', (49, 54)) ('cancer', 'Phenotype', 'HP:0002664', (23, 29)) ('dissemination', 'CPA', (101, 114)) ('breast cancer', 'Disease', 'MESH:D001943', (16, 29)) ('breast cancer', 'Phenotype', 'HP:0003002', (16, 29)) 11367 30258932 Exogenous modulation of NEAT1 modulates gemcitabine sensitivity in cholangiocarcinoma. ('modulates', 'Reg', (30, 39)) ('carcinoma', 'Phenotype', 'HP:0030731', (76, 85)) ('modulation', 'Var', (10, 20)) ('cholangiocarcinoma', 'Phenotype', 'HP:0030153', (67, 85)) ('gemcitabine sensitivity', 'MPA', (40, 63)) ('NEAT1', 'Gene', '283131', (24, 29)) ('NEAT1', 'Gene', (24, 29)) ('cholangiocarcinoma', 'Disease', (67, 85)) ('gemcitabine', 'Chemical', 'MESH:C056507', (40, 51)) ('cholangiocarcinoma', 'Disease', 'MESH:D018281', (67, 85)) 11369 30258932 Moreover, in breast cancer, hepatocellular carcinoma, and papillary kidney cancer, whole-genome analysis indicates NEAT1 carries specific mutations that affect their expression levels. ('cancer', 'Phenotype', 'HP:0002664', (20, 26)) ('hepatocellular carcinoma', 'Phenotype', 'HP:0001402', (28, 52)) ('kidney cancer', 'Phenotype', 'HP:0009726', (68, 81)) ('hepatocellular carcinoma', 'Disease', (28, 52)) ('hepatocellular carcinoma', 'Disease', 'MESH:D006528', (28, 52)) ('papillary kidney cancer', 'Disease', (58, 81)) ('breast cancer', 'Disease', 'MESH:D001943', (13, 26)) ('affect', 'Reg', (153, 159)) ('breast cancer', 'Phenotype', 'HP:0003002', (13, 26)) ('expression levels', 'MPA', (166, 183)) ('breast cancer', 'Disease', (13, 26)) ('cancer', 'Phenotype', 'HP:0002664', (75, 81)) ('carcinoma', 'Phenotype', 'HP:0030731', (43, 52)) ('papillary kidney cancer', 'Phenotype', 'HP:0006766', (58, 81)) ('NEAT1', 'Gene', (115, 120)) ('NEAT1', 'Gene', '283131', (115, 120)) ('papillary kidney cancer', 'Disease', 'MESH:D007681', (58, 81)) ('mutations', 'Var', (138, 147)) 11370 30258932 rs512715 of NEAT1 is also associated with an increased risk of cervical cancer. ('rs512715', 'Mutation', 'rs512715', (0, 8)) ('NEAT1', 'Gene', (12, 17)) ('cancer', 'Phenotype', 'HP:0002664', (72, 78)) ('cervical cancer', 'Disease', 'MESH:D002583', (63, 78)) ('rs512715', 'Var', (0, 8)) ('cervical cancer', 'Disease', (63, 78)) ('NEAT1', 'Gene', '283131', (12, 17)) ('associated', 'Reg', (26, 36)) 11393 30258932 However, a recent study indicated that in breast invasive cancer, from TCGA datasets, NEAT1 was focally deleted in ~8% of breast cancers and its promoters carried various mutations, and three out of the four mutations they validated reproducibly decreased NEAT1 expression compared with the wild type sequence. ('NEAT1', 'Gene', '283131', (256, 261)) ('cancer', 'Phenotype', 'HP:0002664', (129, 135)) ('breast cancers', 'Disease', 'MESH:D001943', (122, 136)) ('breast cancers', 'Disease', (122, 136)) ('cancer', 'Phenotype', 'HP:0002664', (58, 64)) ('breast cancer', 'Phenotype', 'HP:0003002', (122, 135)) ('NEAT1', 'Gene', (256, 261)) ('deleted', 'NegReg', (104, 111)) ('cancers', 'Phenotype', 'HP:0002664', (129, 136)) ('expression', 'MPA', (262, 272)) ('breast invasive cancer', 'Disease', (42, 64)) ('mutations', 'Var', (208, 217)) ('NEAT1', 'Gene', '283131', (86, 91)) ('breast invasive cancer', 'Disease', 'MESH:D001943', (42, 64)) ('NEAT1', 'Gene', (86, 91)) ('breast cancers', 'Phenotype', 'HP:0003002', (122, 136)) ('mutations', 'Var', (171, 180)) ('decreased', 'NegReg', (246, 255)) 11406 30258932 In lung cancer, NEAT1 is up-regulated by the direct binding of Oct4, since knockdown of NEAT1 abolishes Oct4-mediated lung cancer cell growth and motility. ('cancer', 'Phenotype', 'HP:0002664', (123, 129)) ('lung cancer', 'Phenotype', 'HP:0100526', (3, 14)) ('Oct4', 'Gene', '5460', (63, 67)) ('lung cancer', 'Disease', (118, 129)) ('abolishes', 'NegReg', (94, 103)) ('NEAT1', 'Gene', (88, 93)) ('Oct4', 'Gene', (104, 108)) ('knockdown', 'Var', (75, 84)) ('binding', 'Interaction', (52, 59)) ('cancer', 'Phenotype', 'HP:0002664', (8, 14)) ('NEAT1', 'Gene', (16, 21)) ('lung cancer', 'Disease', (3, 14)) ('Oct4', 'Gene', (63, 67)) ('lung cancer', 'Disease', 'MESH:D008175', (118, 129)) ('lung cancer', 'Phenotype', 'HP:0100526', (118, 129)) ('NEAT1', 'Gene', '283131', (88, 93)) ('up-regulated', 'PosReg', (25, 37)) ('motility', 'CPA', (146, 154)) ('NEAT1', 'Gene', '283131', (16, 21)) ('lung cancer', 'Disease', 'MESH:D008175', (3, 14)) ('Oct4', 'Gene', '5460', (104, 108)) 11418 30258932 The aberrant expression of NEAT1 in certain types of cancer may be resulted from the cooperation and antagonism between different transcription factors. ('cancer', 'Disease', (53, 59)) ('cancer', 'Disease', 'MESH:D009369', (53, 59)) ('expression', 'MPA', (13, 23)) ('aberrant', 'Var', (4, 12)) ('NEAT1', 'Gene', '283131', (27, 32)) ('NEAT1', 'Gene', (27, 32)) ('cancer', 'Phenotype', 'HP:0002664', (53, 59)) ('resulted from', 'Reg', (67, 80)) 11425 30258932 In laryngeal squamous cell cancer, high expression of NEAT1 decreases miR-107 expression, thus regulating CDK6 level and exerting an oncogenic effect. ('decreases', 'NegReg', (60, 69)) ('regulating', 'Reg', (95, 105)) ('laryngeal squamous cell cancer', 'Disease', (3, 33)) ('NEAT1', 'Gene', (54, 59)) ('expression', 'MPA', (78, 88)) ('laryngeal squamous cell cancer', 'Disease', 'MESH:D002294', (3, 33)) ('NEAT1', 'Gene', '283131', (54, 59)) ('CDK6', 'Gene', (106, 110)) ('cancer', 'Phenotype', 'HP:0002664', (27, 33)) ('CDK6', 'Gene', '1021', (106, 110)) ('oncogenic effect', 'CPA', (133, 149)) ('high expression', 'Var', (35, 50)) ('miR-107', 'Gene', '406901', (70, 77)) ('squamous cell cancer', 'Phenotype', 'HP:0002860', (13, 33)) ('miR-107', 'Gene', (70, 77)) 11444 30258932 Recently, several studies have revealed the mutations and polymorphisms of NEAT1 are also closely correlated with the prognosis of cancers, which has added complexity to NEAT1-associated signaling and function. ('NEAT1', 'Gene', '283131', (75, 80)) ('cancers', 'Disease', 'MESH:D009369', (131, 138)) ('cancers', 'Phenotype', 'HP:0002664', (131, 138)) ('cancers', 'Disease', (131, 138)) ('NEAT1', 'Gene', (75, 80)) ('cancer', 'Phenotype', 'HP:0002664', (131, 137)) ('polymorphisms', 'Var', (58, 71)) ('correlated', 'Reg', (98, 108)) ('mutations', 'Var', (44, 53)) ('NEAT1', 'Gene', '283131', (170, 175)) ('NEAT1', 'Gene', (170, 175)) 11445 30258932 Moreover, since the two major isoforms of NEAT1 produced from alternative transcription have been reported to have different cellular location and tumor regulation properties, it is necessary to distinguish the exact expression and function of these two isoforms. ('tumor', 'Phenotype', 'HP:0002664', (147, 152)) ('tumor', 'Disease', (147, 152)) ('NEAT1', 'Gene', '283131', (42, 47)) ('alternative transcription', 'Var', (62, 87)) ('NEAT1', 'Gene', (42, 47)) ('tumor', 'Disease', 'MESH:D009369', (147, 152)) 11521 28197344 A 33-year-old G6P3 woman (weight 83.9 kg; height 1.6 m; body mass index 32.8 kg/m2) presented to our unit at 32 5/7 weeks of gestation with severe headache, palpitations, anxiety, abdominal pain, and hypertensive crisis (blood pressure (BP) 200-230/100-130 mmHg). ('headache', 'Disease', (147, 155)) ('woman', 'Species', '9606', (19, 24)) ('pain', 'Phenotype', 'HP:0012531', (190, 194)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (200, 219)) ('palpitations', 'Disease', (157, 169)) ('anxiety', 'Phenotype', 'HP:0000739', (171, 178)) ('abdominal pain', 'Phenotype', 'HP:0002027', (180, 194)) ('headache', 'Phenotype', 'HP:0002315', (147, 155)) ('G6P3', 'Var', (14, 18)) ('anxiety', 'Disease', 'MESH:D001008', (171, 178)) ('hypertensive', 'Disease', 'MESH:D006973', (200, 212)) ('abdominal pain', 'Disease', (180, 194)) ('palpitations', 'Phenotype', 'HP:0001962', (157, 169)) ('headache', 'Disease', 'MESH:D006261', (147, 155)) ('hypertensive', 'Disease', (200, 212)) ('anxiety', 'Disease', (171, 178)) ('abdominal pain', 'Disease', 'MESH:D015746', (180, 194)) 11586 28197344 Phenoxybenzamine is an irreversible adrenergic antagonist and has been suggested as the preferred treatment of choice in patients with pheochromocytoma or PGL. ('pheochromocytoma', 'Disease', (135, 151)) ('Phenoxybenzamine', 'Var', (0, 16)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (135, 151)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (135, 151)) ('PGL', 'Phenotype', 'HP:0002668', (155, 158)) ('Phenoxybenzamine', 'Chemical', 'MESH:D010643', (0, 16)) ('patients', 'Species', '9606', (121, 129)) 11598 28197344 Referral for genetic testing is also essential given that a germline mutation in susceptibility genes is identified in approximately 40% of pheochromocytomas or paragangliomas cases, which can increase risk of tumor recurrence and also have implications for family members. ('pheochromocytomas', 'Disease', (140, 157)) ('paraganglioma', 'Phenotype', 'HP:0002668', (161, 174)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (140, 157)) ('increase', 'PosReg', (193, 201)) ('tumor', 'Phenotype', 'HP:0002664', (210, 215)) ('paragangliomas', 'Disease', (161, 175)) ('germline mutation', 'Var', (60, 77)) ('paragangliomas', 'Disease', 'MESH:D010235', (161, 175)) ('paragangliomas', 'Phenotype', 'HP:0002668', (161, 175)) ('tumor', 'Disease', (210, 215)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (140, 157)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (140, 156)) ('tumor', 'Disease', 'MESH:D009369', (210, 215)) 11604 15331017 No evidence for involvement of SDHD in neuroblastoma pathogenesis Deletions in the long arm of chromosome 11 are observed in a subgroup of advanced stage neuroblastomas with poor outcome. ('SDHD', 'Gene', (31, 35)) ('Deletions', 'Var', (66, 75)) ('neuroblastoma', 'Disease', 'MESH:D009447', (39, 52)) ('neuroblastomas', 'Phenotype', 'HP:0003006', (154, 168)) ('observed', 'Reg', (113, 121)) ('neuroblastomas', 'Disease', 'MESH:D009447', (154, 168)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (154, 167)) ('neuroblastoma', 'Disease', (39, 52)) ('neuroblastoma', 'Disease', 'MESH:D009447', (154, 167)) ('SDHD', 'Gene', '6392', (31, 35)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (39, 52)) ('neuroblastoma', 'Disease', (154, 167)) ('neuroblastomas', 'Disease', (154, 168)) 11607 15331017 Analysis at the genomic level of 67 tumour samples and 37 cell lines revealed at least 2 bona-fide mutations in cell lines without allelic loss at 11q23: a 4bp-deletion causing skip of exon 3 resulting in a premature stop codon in cell line N206, and a Y93C mutation in cell line NMB located in a region affected by germline SDHD mutations causing hereditary paraganglioma. ('Y93C', 'Var', (253, 257)) ('NMB', 'Gene', '4828', (280, 283)) ('tumour', 'Disease', 'MESH:D009369', (36, 42)) ('tumour', 'Phenotype', 'HP:0002664', (36, 42)) ('tumour', 'Disease', (36, 42)) ('N206', 'CellLine', 'CVCL:C885', (241, 245)) ('paraganglioma', 'Phenotype', 'HP:0002668', (359, 372)) ('hereditary paraganglioma', 'Disease', (348, 372)) ('NMB', 'Gene', (280, 283)) ('Y93C', 'Mutation', 'rs142135772', (253, 257)) ('hereditary paraganglioma', 'Disease', 'MESH:D010235', (348, 372)) 11617 15331017 Both NB subgroups present with 17q-gain, but are distinguished by presence of MYCN amplification and 1p-deletion in subgroup 2B and 11q-deletion often in combination with 3p-deletion in subgroup 2A. ('17q-gain', 'MPA', (31, 39)) ('NB', 'Phenotype', 'HP:0003006', (5, 7)) ('11q-deletion', 'Var', (132, 144)) ('MYCN', 'Gene', '4613', (78, 82)) ('MYCN', 'Gene', (78, 82)) ('1p-deletion', 'Var', (101, 112)) ('17q-gain', 'PosReg', (31, 39)) 11619 15331017 The recurrent finding of 11q-deletions in NB suggests the presence of a tumour suppressor gene residing on the long arm of chromosome 11. ('tumour', 'Phenotype', 'HP:0002664', (72, 78)) ('NB', 'Phenotype', 'HP:0003006', (42, 44)) ('11q-deletions', 'Var', (25, 38)) ('tumour', 'Disease', 'MESH:D009369', (72, 78)) ('tumour', 'Disease', (72, 78)) 11620 15331017 Although both comparative genomic hybridization (CGH) and loss of heterozygosity (LOH) studies indicate that the majority of the 11q-deletions are distal losses encompassing a large portion of the long arm, detection of rare small or interstitial deletions allowed the provisional localization of an SRO (shortest region of overlap) at 11q23.3 between markers D11S1340 and D11S1299, encompassing a distance of approximately 3 Mb. ('D11S1299', 'Var', (373, 381)) ('D11S1340', 'Var', (360, 368)) ('S1299', 'CellLine', 'CVCL:0060', (376, 381)) ('SRO', 'Chemical', '-', (300, 303)) 11621 15331017 When a single tumour with two small interstitial deletions is not taken into consideration, the SRO is defined by a small subset of tumours and spans 18 Mb between markers D11S898 and D11S1299 (according to UCSC Genome Browser, freeze version July 2003). ('SRO', 'Chemical', '-', (96, 99)) ('tumour', 'Disease', (14, 20)) ('tumours', 'Disease', 'MESH:D009369', (132, 139)) ('tumour', 'Disease', (132, 138)) ('D11S898', 'Var', (172, 179)) ('tumours', 'Disease', (132, 139)) ('tumours', 'Phenotype', 'HP:0002664', (132, 139)) ('tumour', 'Phenotype', 'HP:0002664', (14, 20)) ('tumour', 'Phenotype', 'HP:0002664', (132, 138)) ('D11S1299', 'Var', (184, 192)) ('tumour', 'Disease', 'MESH:D009369', (14, 20)) ('tumour', 'Disease', 'MESH:D009369', (132, 138)) ('S1299', 'CellLine', 'CVCL:0060', (187, 192)) 11623 15331017 The first evidence for a role of SDHD in tumour development was obtained by the discovery of germline mutations in this gene as the cause for familial paraganglioma (PGL). ('familial paraganglioma', 'Disease', 'MESH:D010235', (142, 164)) ('tumour', 'Phenotype', 'HP:0002664', (41, 47)) ('paraganglioma', 'Phenotype', 'HP:0002668', (151, 164)) ('tumour', 'Disease', 'MESH:D009369', (41, 47)) ('mutations', 'Var', (102, 111)) ('PGL', 'Phenotype', 'HP:0002668', (166, 169)) ('familial paraganglioma', 'Disease', (142, 164)) ('tumour', 'Disease', (41, 47)) ('cause', 'Reg', (132, 137)) 11624 15331017 Somatic and occult germline SDHD mutations were also detected in patients with apparently sporadic pheochromocytoma (PC). ('SDHD', 'Gene', (28, 32)) ('pheochromocytoma', 'Disease', (99, 115)) ('mutations', 'Var', (33, 42)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (99, 115)) ('detected', 'Reg', (53, 61)) ('PC', 'Phenotype', 'HP:0002666', (117, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (99, 115)) ('patients', 'Species', '9606', (65, 73)) 11626 15331017 It was shown that SDHD inactivation leads to a pseudo-hypoxic state and upregulation of hypoxia responsive genes, possibly through increased production of reactive oxygen species (ROS). ('inactivation', 'Var', (23, 35)) ('upregulation', 'PosReg', (72, 84)) ('hypoxia', 'Disease', 'MESH:D000860', (88, 95)) ('increased', 'PosReg', (131, 140)) ('hypoxia', 'Disease', (88, 95)) ('increased production of reactive oxygen species', 'Phenotype', 'HP:0025464', (131, 178)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (155, 178)) ('ROS', 'Chemical', 'MESH:D017382', (180, 183)) ('leads to', 'Reg', (36, 44)) ('SDHD', 'Gene', (18, 22)) ('pseudo-hypoxic state', 'MPA', (47, 67)) 11628 15331017 Consequently, inactivating SDHD mutations or reduced activity of SDHD might lead to impaired oxidative phosphorylation and hypoxia and thus contribute to NB oncogenesis. ('reduced', 'NegReg', (45, 52)) ('NB', 'Phenotype', 'HP:0003006', (154, 156)) ('oxidative phosphorylation', 'MPA', (93, 118)) ('hypoxia', 'Disease', 'MESH:D000860', (123, 130)) ('impaired', 'NegReg', (84, 92)) ('contribute', 'Reg', (140, 150)) ('hypoxia', 'Disease', (123, 130)) ('activity', 'MPA', (53, 61)) ('mutations', 'Var', (32, 41)) ('SDHD', 'Gene', (27, 31)) ('inactivating', 'Var', (14, 26)) ('NB oncogenesis', 'Disease', (154, 168)) ('NB oncogenesis', 'Disease', 'MESH:D063646', (154, 168)) 11635 15331017 Cultures of NB cell lines N206, SK-N-AS, SK-N-SH, NMB, SK-N-FI, CLB-GA, LA-N-2 and NGP were treated with puromycine (100 mug/ml) during 6 hours in order to prevent possible nonsense mediated RNA decay of variant SDHD transcripts. ('CLB', 'Gene', (64, 67)) ('N206', 'CellLine', 'CVCL:C885', (26, 30)) ('NMB', 'Gene', '4828', (50, 53)) ('variant', 'Var', (204, 211)) ('SK-N-AS, SK-N-SH', 'Disease', 'MESH:C536108', (32, 48)) ('SDHD', 'Gene', (212, 216)) ('puromycine', 'Chemical', 'MESH:D011691', (105, 115)) ('NB', 'Phenotype', 'HP:0003006', (12, 14)) ('NMB', 'Gene', (50, 53)) ('CLB', 'Gene', '171425', (64, 67)) ('nonsense mediated RNA decay', 'MPA', (173, 200)) 11637 15331017 All NB patients were analyzed with 4 microsatellite markers on 11q23: D11S1986 (11q23.1), D11S1998 (11q23.3), D11S1356 (11q23.3) and D11S1299 (11q23.3), of which D11S1986 and D11S1998 are immediately flanking the SDHD gene. ('D11S1299', 'Var', (133, 141)) ('patients', 'Species', '9606', (7, 15)) ('D11S1986', 'Var', (70, 78)) ('S1299', 'CellLine', 'CVCL:0060', (136, 141)) ('D11S1998', 'Var', (175, 183)) ('D11S1986', 'Var', (162, 170)) ('NB', 'Phenotype', 'HP:0003006', (4, 6)) ('D11S1998', 'Var', (90, 98)) ('SDHD', 'Gene', (213, 217)) ('D11S1356', 'Var', (110, 118)) 11638 15331017 In order to discriminate between whole chromosome loss, and unbalanced 11q loss (= partial 11q loss), two microsatellite markers on 11p (D11S922 on 11p15.5 and D11S1324 on 11p14.1) were analyzed in patients that showed allelic imbalance for all 11q markers (positions of the markers are according to the UCSC Genome Browser, freeze version July 2003). ('loss', 'NegReg', (75, 79)) ('patients', 'Species', '9606', (198, 206)) ('imbalance', 'Phenotype', 'HP:0002172', (227, 236)) ('D11S1324', 'Var', (160, 168)) 11654 15331017 For the screening of the g.7876A>G variant, multiplex PCR was performed using primers and probe of the normal allele of the above-mentioned SNP (IVS4-32T>C) and primers and probe for the variant allele g.7876A>G. ('PC', 'Phenotype', 'HP:0002666', (54, 56)) ('g.7876A>G', 'Mutation', 'rs142135772', (25, 34)) ('g.7876A>G', 'Mutation', 'rs142135772', (202, 211)) ('g.7876A>G', 'Var', (202, 211)) ('g.7876A>G', 'Var', (25, 34)) ('IVS4-32T>C', 'Mutation', 'c.IVS4-32T>C', (145, 155)) 11670 15331017 Sequencing analysis of SDHD on 11q23 demonstrated that the allelic imbalance in NMB does not cause loss of heterozygosity (see later). ('imbalance', 'Phenotype', 'HP:0002172', (67, 76)) ('NMB', 'Gene', '4828', (80, 83)) ('NMB', 'Gene', (80, 83)) ('allelic imbalance', 'Var', (59, 76)) 11671 15331017 In 20 of the 67 NB tumour samples, loss of heterozygosity (LOH) or allelic imbalance (AI) (AIF > 2) in the 11q23 region was found (Table 3): unbalanced 11q LOH (i.e. ('unbalanced 11q LOH', 'Var', (141, 159)) ('NB tumour', 'Disease', (16, 25)) ('imbalance', 'Phenotype', 'HP:0002172', (75, 84)) ('NB tumour', 'Disease', 'MESH:D009369', (16, 25)) ('NB', 'Phenotype', 'HP:0003006', (16, 18)) ('tumour', 'Phenotype', 'HP:0002664', (19, 25)) 11672 15331017 partial allelic loss of the long arm of chromosome 11) in 2/32 patients of the Ghent University Hospital (Ghent, Belgium) and in 7/35 patients of the Molecular Oncology Unit (Lyon, France) and loss of markers on both chromosome arms (indicating whole chromosome 11 loss, or co-occurrence of 11q and 11p allelic loss) in 3/32 patients of the Ghent University Hospital and 8/35 patients of the Molecular Oncology Unit (Table 3). ('patients', 'Species', '9606', (376, 384)) ('partial allelic loss', 'Var', (0, 20)) ('patients', 'Species', '9606', (325, 333)) ('loss', 'NegReg', (265, 269)) ('loss', 'Var', (193, 197)) ('patients', 'Species', '9606', (134, 142)) ('loss', 'NegReg', (311, 315)) ('patients', 'Species', '9606', (63, 71)) ('Oncology', 'Phenotype', 'HP:0002664', (402, 410)) ('Oncology', 'Phenotype', 'HP:0002664', (160, 168)) 11674 15331017 Denaturing high performance liquid chromatography (DHPLC) analysis and subsequent sequencing of the SDHD gene in 31 NB cell lines and 67 NB tumour samples revealed the presence of sequence variants in 5 NB cell lines and 4 NB tumour samples (Table 4). ('tumour', 'Phenotype', 'HP:0002664', (140, 146)) ('NB', 'Phenotype', 'HP:0003006', (116, 118)) ('NB tumour', 'Disease', 'MESH:D009369', (223, 232)) ('NB', 'Phenotype', 'HP:0003006', (137, 139)) ('tumour', 'Phenotype', 'HP:0002664', (226, 232)) ('presence', 'Reg', (168, 176)) ('NB tumour', 'Disease', (137, 146)) ('NB', 'Phenotype', 'HP:0003006', (203, 205)) ('NB', 'Phenotype', 'HP:0003006', (223, 225)) ('DHPLC', 'Chemical', '-', (51, 56)) ('sequence variants', 'Var', (180, 197)) ('NB tumour', 'Disease', (223, 232)) ('SDHD', 'Gene', (100, 104)) ('NB tumour', 'Disease', 'MESH:D009369', (137, 146)) 11675 15331017 The first, a Y93C missense mutation in cell line NMB, was not detected in 135 unrelated healthy individuals. ('Y93C missense', 'Var', (13, 26)) ('NMB', 'Gene', '4828', (49, 52)) ('NMB', 'Gene', (49, 52)) ('Y93C', 'Mutation', 'rs142135772', (13, 17)) 11682 15331017 This is also true for the G12S change found in tumour and constitutional DNA of patient F18. ('tumour', 'Disease', 'MESH:D009369', (47, 53)) ('G12S', 'Var', (26, 30)) ('F18', 'Gene', (88, 91)) ('constitutional DNA', 'Disease', (58, 76)) ('F18', 'Gene', '10046', (88, 91)) ('tumour', 'Disease', (47, 53)) ('G12S', 'Mutation', 'rs34677591', (26, 30)) ('patient', 'Species', '9606', (80, 87)) ('tumour', 'Phenotype', 'HP:0002664', (47, 53)) 11683 15331017 The previously reported polymorphisms IVS3-29A>G and S68S were detected in cell lines NGP, NMB and SK-N-FI, in both tumour and constitutional DNA of patients F18 and F35, and in constitutional DNA of patient F22. ('tumour', 'Disease', 'MESH:D009369', (116, 122)) ('NMB', 'Gene', '4828', (91, 94)) ('tumour', 'Phenotype', 'HP:0002664', (116, 122)) ('patients', 'Species', '9606', (149, 157)) ('S68S', 'Mutation', 'rs9919552', (53, 57)) ('tumour', 'Disease', (116, 122)) ('F18', 'Gene', (158, 161)) ('S68S', 'Var', (53, 57)) ('IVS3-29A>G', 'Var', (38, 48)) ('patient', 'Species', '9606', (149, 156)) ('F18', 'Gene', '10046', (158, 161)) ('NMB', 'Gene', (91, 94)) ('IVS3-29A>G', 'Mutation', 'c.IVS3-29A>G', (38, 48)) ('patient', 'Species', '9606', (200, 207)) 11684 15331017 In all cases, these last two polymorphism (IVS3-29A>G and S68S) were present together with the IVS4-32T>C variant, previously described by Taschner and colleagues. ('S68S', 'Var', (58, 62)) ('IVS3-29A>G', 'Var', (43, 53)) ('IVS4-32T>C', 'Mutation', 'c.IVS4-32T>C', (95, 105)) ('IVS3-29A>G', 'Mutation', 'c.IVS3-29A>G', (43, 53)) ('IVS4-32T>C', 'Var', (95, 105)) ('S68S', 'Mutation', 'rs9919552', (58, 62)) 11687 15331017 The presence of the IVS3-29A>G, S68S and IVS4-32T>C variants in a cell line (NGP) and two tumours (F18 and F35), in which one of both SDHD alleles has been deleted, indicates that all three variants are located on the same allele, representing a low frequent haplotype. ('S68S', 'Mutation', 'rs9919552', (32, 36)) ('F18', 'Gene', (99, 102)) ('variants', 'Var', (52, 60)) ('S68S', 'Var', (32, 36)) ('tumour', 'Phenotype', 'HP:0002664', (90, 96)) ('tumours', 'Phenotype', 'HP:0002664', (90, 97)) ('IVS4-32T>C variants', 'Var', (41, 60)) ('F18', 'Gene', '10046', (99, 102)) ('IVS3-29A>G', 'Mutation', 'c.IVS3-29A>G', (20, 30)) ('IVS4-32T>C', 'Mutation', 'c.IVS4-32T>C', (41, 51)) ('tumours', 'Disease', 'MESH:D009369', (90, 97)) ('tumours', 'Disease', (90, 97)) 11689 15331017 Amplification of the full-length SDHD cDNA showed that a 4 bp deletion in the intron-exon boundary in cell line N206 caused skipping of exon 3 leading to a premature stop codon. ('deletion', 'Var', (62, 70)) ('premature stop codon', 'MPA', (156, 176)) ('N206', 'CellLine', 'CVCL:C885', (112, 116)) ('skipping', 'MPA', (124, 132)) 11690 15331017 No alternative transcripts could be detected in cell lines NMB, SK-N-FI, NGP and LA-N-2 carrying basepair variants (and 3 control cell lines without sequence variants SK-N-SH, SK-N-AS and CLB-GA) when grown with or without puromycin (Figure 1). ('CLB', 'Gene', (188, 191)) ('CLB', 'Gene', '171425', (188, 191)) ('variants', 'Var', (106, 114)) ('NMB', 'Gene', (59, 62)) ('NMB', 'Gene', '4828', (59, 62)) ('puromycin', 'Chemical', 'MESH:D011691', (223, 232)) 11691 15331017 NMB and N206) (N = 9) compared to cell lines without 11q allelic loss (N = 22) (Mann-Whitney test: P = 1.49E-03). ('NMB', 'Gene', '4828', (0, 3)) ('NMB', 'Gene', (0, 3)) ('N206', 'CellLine', 'CVCL:C885', (8, 12)) ('N206', 'Var', (8, 12)) 11692 15331017 As the SDHD gene encodes the small subunit D of the mitochondrial respiratory chain complex II we decided to assess the effect of the basepair variants on the activity of complex II of the respiratory chain by spectrophotometrical measurements in 5 NB cell lines (N206, NMB, SK-N-FI, NGP and LA-N-2) and 3 control NB cell lines without sequence variants (SK-N-SH, SK-N-AS and CLB-GA). ('NB', 'Phenotype', 'HP:0003006', (249, 251)) ('NMB', 'Gene', '4828', (270, 273)) ('N206', 'CellLine', 'CVCL:C885', (264, 268)) ('CLB', 'Gene', (376, 379)) ('CLB', 'Gene', '171425', (376, 379)) ('NB', 'Phenotype', 'HP:0003006', (314, 316)) ('NMB', 'Gene', (270, 273)) ('variants', 'Var', (143, 151)) 11700 15331017 missense mutation Y93C in cell line NMB and a 4 bp deletion in cell line N206. ('NMB', 'Gene', '4828', (36, 39)) ('N206', 'CellLine', 'CVCL:C885', (73, 77)) ('Y93C', 'Mutation', 'rs142135772', (18, 22)) ('Y93C', 'Var', (18, 22)) ('NMB', 'Gene', (36, 39)) 11702 15331017 The substituted amino-acid is located within a region of the SDHD protein frequently altered due to germline mutations in paraganglioma (PGL) families (loss of Y93 and two missense mutations, i.e. ('paraganglioma', 'Phenotype', 'HP:0002668', (122, 135)) ('PGL', 'Phenotype', 'HP:0002668', (137, 140)) ('paraganglioma', 'Disease', (122, 135)) ('loss', 'Var', (152, 156)) ('SDHD', 'Gene', (61, 65)) ('paraganglioma', 'Disease', 'MESH:D010235', (122, 135)) ('altered', 'Reg', (85, 92)) ('PGL', 'Gene', (137, 140)) ('Y93', 'Var', (160, 163)) 11703 15331017 D92Y and L95P). ('L95P', 'Mutation', 'rs80338846', (9, 13)) ('D92Y', 'Var', (0, 4)) ('L95P', 'Var', (9, 13)) ('D92Y', 'Mutation', 'rs80338845', (0, 4)) 11704 15331017 The predicted truncated protein has another carboxyterminal amino-acid sequence from H56 on and its normal function is assumed to be impaired as carboxyterminal amino-acids involved in ubiquinone and heme b binding are missing (H71, D82 and Y83) and consequently the structure of the transmembrane subunit and/or association of the catalytic domain subunits SDHA and SDHB to the membrane would be disrupted. ('disrupted', 'NegReg', (397, 406)) ('Y83', 'Var', (241, 244)) ('heme', 'Chemical', 'MESH:D006418', (200, 204)) ('ubiquinone', 'Chemical', 'MESH:D014451', (185, 195)) ('SDHA', 'Gene', '6389', (358, 362)) ('D82', 'Var', (233, 236)) ('H56', 'Var', (85, 88)) ('SDHA', 'Gene', (358, 362)) ('H71', 'Var', (228, 231)) ('association', 'Interaction', (313, 324)) ('SDHB', 'Gene', '6390', (367, 371)) ('H56', 'CellLine', 'CVCL:5768', (85, 88)) ('SDHB', 'Gene', (367, 371)) ('missing', 'NegReg', (219, 226)) ('structure', 'MPA', (267, 276)) 11707 15331017 Additional screening for homozygous deletions in all cell lines and methylation in cell lines and tumours were negative. ('tumours', 'Phenotype', 'HP:0002664', (98, 105)) ('deletions', 'Var', (36, 45)) ('tumour', 'Phenotype', 'HP:0002664', (98, 104)) ('tumours', 'Disease', 'MESH:D009369', (98, 105)) ('tumours', 'Disease', (98, 105)) 11709 15331017 However, the finding of two apparently bona fide SDHD mutations in NB without allelic loss of distal 11q leaves the possibility open that the gene contributes to NB oncogenesis due to haplo-insufficiency, rather than functional inactivation of both alleles. ('NB oncogenesis', 'Disease', (162, 176)) ('NB oncogenesis', 'Disease', 'MESH:D063646', (162, 176)) ('mutations', 'Var', (54, 63)) ('contributes', 'Reg', (147, 158)) ('haplo-insufficiency', 'Disease', (184, 203)) ('NB', 'Phenotype', 'HP:0003006', (162, 164)) ('haplo-insufficiency', 'Disease', 'MESH:D000309', (184, 203)) ('NB', 'Phenotype', 'HP:0003006', (67, 69)) 11710 15331017 A similar correlation between 11q LOH and reduced SDHD expression was recently described in colorectal and gastric cancer. ('reduced', 'NegReg', (42, 49)) ('SDHD', 'Gene', (50, 54)) ('gastric cancer', 'Phenotype', 'HP:0012126', (107, 121)) ('cancer', 'Phenotype', 'HP:0002664', (115, 121)) ('11q LOH', 'Var', (30, 37)) ('expression', 'MPA', (55, 65)) ('colorectal and gastric cancer', 'Disease', 'MESH:D013274', (92, 121)) 11714 15331017 However, the finding of, albeit rare, bona fide mutations and reduced expression of SDHD in NB with 11q allelic loss hints at a possible haplo-insufficient contribution to tumour development. ('tumour', 'Phenotype', 'HP:0002664', (172, 178)) ('NB', 'Phenotype', 'HP:0003006', (92, 94)) ('tumour', 'Disease', 'MESH:D009369', (172, 178)) ('expression', 'MPA', (70, 80)) ('tumour', 'Disease', (172, 178)) ('loss', 'NegReg', (112, 116)) ('SDHD in NB', 'Gene', (84, 94)) ('mutations', 'Var', (48, 57)) ('reduced', 'NegReg', (62, 69)) 11717 15331017 In mouse models for some of these genes, loss or mutation of one allele increased tumour susceptibility despite expression of the remaining wild-type allele. ('tumour', 'Phenotype', 'HP:0002664', (82, 88)) ('increased', 'PosReg', (72, 81)) ('mouse', 'Species', '10090', (3, 8)) ('tumour', 'Disease', 'MESH:D009369', (82, 88)) ('mutation', 'Var', (49, 57)) ('tumour', 'Disease', (82, 88)) ('loss', 'NegReg', (41, 45)) 11720 15331017 However, further evidence is needed to support the haplo-insufficient involvement of SDHD in cancer. ('cancer', 'Disease', (93, 99)) ('cancer', 'Disease', 'MESH:D009369', (93, 99)) ('haplo-insufficient', 'Var', (51, 69)) ('cancer', 'Phenotype', 'HP:0002664', (93, 99)) ('SDHD', 'Gene', (85, 89)) 11769 24289190 Additionally, 131I-metaiodobenzylguanidine (MIBG), a precursor of noradrenaline, scintigraphy has a sensitivity of 77%-90% and a specificity of 95%-100% in detecting paragangliomas . ('131I-metaiodobenzylguanidine', 'Chemical', '-', (14, 42)) ('noradrenaline', 'Chemical', 'MESH:D009638', (66, 79)) ('paragangliomas', 'Disease', (166, 180)) ('paragangliomas', 'Disease', 'MESH:D010235', (166, 180)) ('131I-metaiodobenzylguanidine', 'Var', (14, 42)) ('paraganglioma', 'Phenotype', 'HP:0002668', (166, 179)) ('paragangliomas', 'Phenotype', 'HP:0002668', (166, 180)) ('MIBG', 'Chemical', '-', (44, 48)) 11775 24289190 To date, I131-MIBG remains the only other non-surgical treatment that has produced tumor responses >30% . ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('MIBG', 'Chemical', '-', (14, 18)) ('tumor', 'Disease', (83, 88)) ('I131-MIBG', 'Var', (9, 18)) ('tumor', 'Disease', 'MESH:D009369', (83, 88)) 11778 24289190 have reported that 97% of patients with paraganglioma achieve tumor control through radiosurgery, the results are comparable to that of surgery . ('paraganglioma', 'Phenotype', 'HP:0002668', (40, 53)) ('paraganglioma achieve tumor', 'Disease', (40, 67)) ('tumor', 'Phenotype', 'HP:0002664', (62, 67)) ('patients', 'Species', '9606', (26, 34)) ('radiosurgery', 'Var', (84, 96)) ('paraganglioma achieve tumor', 'Disease', 'MESH:D010235', (40, 67)) 11787 22261759 Elevated Plasma Succinate Among PTEN, SDHB and SDHD Mutation Positive Individuals Cowden Syndrome (CS) results from germline mutations in phosphatase and tensin homologue deleted on chromosome ten (PTEN) and from variants in succinate dehydrogenase (SDH) B and D subunits. ('SDH', 'Gene', (250, 253)) ('Cowden Syndrome', 'Disease', (82, 97)) ('Elevated', 'PosReg', (0, 8)) ('PTEN', 'Gene', '5728', (198, 202)) ('SDHB', 'Gene', '6390', (38, 42)) ('succinate dehydrogenase', 'Gene', (225, 248)) ('Plasma Succinate', 'MPA', (9, 25)) ('Succinate', 'Chemical', 'MESH:D019802', (16, 25)) ('SDHD', 'Gene', '6392', (47, 51)) ('Cowden Syndrome', 'Disease', 'MESH:D006223', (82, 97)) ('Mutation', 'Var', (52, 60)) ('SDH', 'Gene', '6390', (47, 50)) ('Elevated Plasma Succinate', 'Phenotype', 'HP:0020149', (0, 25)) ('SDHB', 'Gene', (38, 42)) ('mutations', 'Var', (125, 134)) ('SDH', 'Gene', '6390', (38, 41)) ('PTEN', 'Gene', (32, 36)) ('SDH', 'Gene', '6390', (250, 253)) ('SDHD', 'Gene', (47, 51)) ('succinate dehydrogenase', 'Gene', '6390', (225, 248)) ('variants', 'Var', (213, 221)) ('SDH', 'Gene', (47, 50)) ('PTEN', 'Gene', '5728', (32, 36)) ('PTEN', 'Gene', (198, 202)) ('SDH', 'Gene', (38, 41)) 11788 22261759 We hypothesized that succinate accumulation may be common among individuals with SDH variants/mutations and those with PTEN mutations. ('common', 'Reg', (51, 57)) ('variants/mutations', 'Var', (85, 103)) ('PTEN', 'Gene', (119, 123)) ('succinate accumulation', 'MPA', (21, 43)) ('SDH', 'Gene', '6390', (81, 84)) ('PTEN', 'Gene', '5728', (119, 123)) ('succinate', 'Chemical', 'MESH:D019802', (21, 30)) ('SDH', 'Gene', (81, 84)) 11789 22261759 Urine and blood were collected from individuals meeting full or partial CS diagnostic criteria, those with paraganglioma or a known susceptibility PGL-associated gene mutation and succinate was measured. ('paraganglioma', 'Disease', 'MESH:D010235', (107, 120)) ('succinate', 'Chemical', 'MESH:D019802', (180, 189)) ('PGL-associated', 'Gene', (147, 161)) ('mutation', 'Var', (167, 175)) ('PGL', 'Phenotype', 'HP:0002668', (147, 150)) ('paraganglioma', 'Phenotype', 'HP:0002668', (107, 120)) ('paraganglioma', 'Disease', (107, 120)) 11791 22261759 Elevated plasma succinate was observed in 13/21 (62%) individuals with germline PTEN, SDHB or SDHD mutations compared to 5/32 (16%) controls (p<0.001); 10/15 (67%) individuals with pathogenic PTEN mutations, but in <20% of mutation negative individuals meeting identical criteria; and among individuals with mutations in SDHB (1/1, 100%) and SDHD (2/5, 40%). ('PTEN', 'Gene', '5728', (80, 84)) ('SDHD', 'Gene', '6392', (342, 346)) ('Elevated', 'PosReg', (0, 8)) ('SDHB', 'Gene', '6390', (86, 90)) ('SDHD', 'Gene', (342, 346)) ('succinate', 'Chemical', 'MESH:D019802', (16, 25)) ('PTEN', 'Gene', (192, 196)) ('Elevated plasma succinate', 'Phenotype', 'HP:0020149', (0, 25)) ('SDHD', 'Gene', '6392', (94, 98)) ('SDHB', 'Gene', (86, 90)) ('mutations', 'Var', (197, 206)) ('plasma succinate', 'MPA', (9, 25)) ('SDHB', 'Gene', '6390', (321, 325)) ('PTEN', 'Gene', '5728', (192, 196)) ('SDHD', 'Gene', (94, 98)) ('PTEN', 'Gene', (80, 84)) ('SDHB', 'Gene', (321, 325)) ('mutations', 'Var', (99, 108)) ('pathogenic', 'Reg', (181, 191)) 11792 22261759 Our data suggest that mutations in PTEN, SDHB and SDHD reduce catalytic activity of SDH and result in succinate accumulation and identify a common biochemical alteration between these two patient populations. ('SDHD', 'Gene', (50, 54)) ('succinate accumulation', 'MPA', (102, 124)) ('result in', 'Reg', (92, 101)) ('reduce', 'NegReg', (55, 61)) ('SDH', 'Gene', (50, 53)) ('SDH', 'Gene', (41, 44)) ('succinate', 'Chemical', 'MESH:D019802', (102, 111)) ('patient', 'Species', '9606', (188, 195)) ('PTEN', 'Gene', (35, 39)) ('SDHB', 'Gene', '6390', (41, 45)) ('SDH', 'Gene', '6390', (84, 87)) ('catalytic activity', 'MPA', (62, 80)) ('mutations', 'Var', (22, 31)) ('SDHD', 'Gene', '6392', (50, 54)) ('PTEN', 'Gene', '5728', (35, 39)) ('SDH', 'Gene', '6390', (50, 53)) ('SDHB', 'Gene', (41, 45)) ('SDH', 'Gene', '6390', (41, 44)) ('SDH', 'Gene', (84, 87)) 11796 22261759 Germline mutations or deletions in phosphatase and tensin homologue deleted on chromosome ten (PTEN, OMIM +601728), a ubiquitously expressed tumour suppressor, have been identified in approximately 25% of individuals with CS, and somatic PTEN mutations have been variably observed in a large number of sporadic malignancies. ('deletions', 'Var', (22, 31)) ('malignancies', 'Disease', 'MESH:D009369', (311, 323)) ('tumour', 'Phenotype', 'HP:0002664', (141, 147)) ('PTEN', 'Gene', (238, 242)) ('malignancies', 'Disease', (311, 323)) ('identified', 'Reg', (170, 180)) ('PTEN', 'Gene', (95, 99)) ('tumour', 'Disease', 'MESH:D009369', (141, 147)) ('PTEN', 'Gene', '5728', (238, 242)) ('PTEN', 'Gene', '5728', (95, 99)) ('tumour', 'Disease', (141, 147)) 11800 22261759 Like PTEN, SDHx genes also function as tumour supressors and mutations in these genes result in mitochondrial dysfunction and tumourigenesis via upregulation of angiogenic and hypoxic pathways. ('mitochondrial dysfunction', 'Disease', 'MESH:D028361', (96, 121)) ('tumour', 'Phenotype', 'HP:0002664', (126, 132)) ('upregulation', 'PosReg', (145, 157)) ('tumour', 'Phenotype', 'HP:0002664', (39, 45)) ('tumour', 'Disease', (39, 45)) ('mitochondrial dysfunction', 'Disease', (96, 121)) ('tumour', 'Disease', 'MESH:D009369', (126, 132)) ('PTEN', 'Gene', (5, 9)) ('mutations', 'Var', (61, 70)) ('PTEN', 'Gene', '5728', (5, 9)) ('SDHx genes', 'Gene', (11, 21)) ('tumour', 'Disease', (126, 132)) ('SDHx', 'Chemical', '-', (11, 15)) ('mitochondrial dysfunction', 'Phenotype', 'HP:0003287', (96, 121)) ('tumour', 'Disease', 'MESH:D009369', (39, 45)) 11801 22261759 Mutations in SDHA, SDHB, SDHC, SDHD and succinate dehyrogenase complex assembly factor 2 (SDHAF2) underlie most cases of familial paraganglioma (PGL) giving rise to paraganglioma syndromes type 4 (PGL-4, SDHB, OMIM 115310), type 3 (PGL-3, SDHC, OMIM 605373), type 1 (PGL-1, SDHD, OMIM 168000), and type 2 (PGL-2, SDHAF2, OMIM 601650) respectively. ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (165, 188)) ('PGL-3', 'Gene', '6391', (232, 237)) ('SDHAF2', 'Gene', '54949', (90, 96)) ('SDHAF2', 'Gene', '54949', (313, 319)) ('SDHAF2', 'Gene', (313, 319)) ('SDHAF2', 'Gene', (90, 96)) ('paraganglioma syndromes', 'Disease', (165, 188)) ('SDHA', 'Gene', (90, 94)) ('SDHC', 'Gene', '6391', (25, 29)) ('PGL', 'Phenotype', 'HP:0002668', (197, 200)) ('PGL-2', 'Gene', (306, 311)) ('SDHC', 'Gene', '6391', (239, 243)) ('SDHA', 'Gene', '6389', (90, 94)) ('paraganglioma', 'Phenotype', 'HP:0002668', (165, 178)) ('SDHB', 'Gene', '6390', (204, 208)) ('PGL-3', 'Gene', (232, 237)) ('Mutations', 'Var', (0, 9)) ('PGL-4', 'Gene', (197, 202)) ('SDHD', 'Gene', '6392', (31, 35)) ('SDHA', 'Gene', (13, 17)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (121, 143)) ('SDHB', 'Gene', '6390', (19, 23)) ('PGL', 'Phenotype', 'HP:0002668', (267, 270)) ('SDHD', 'Gene', '6392', (274, 278)) ('SDHC', 'Gene', (25, 29)) ('SDHB', 'Gene', (204, 208)) ('SDHA', 'Gene', '6389', (13, 17)) ('PGL', 'Phenotype', 'HP:0002668', (145, 148)) ('PGL', 'Phenotype', 'HP:0002668', (306, 309)) ('succinate dehyrogenase complex assembly factor 2', 'Gene', (40, 88)) ('SDHC', 'Gene', (239, 243)) ('PGL', 'Phenotype', 'HP:0002668', (232, 235)) ('SDHD', 'Gene', (31, 35)) ('paraganglioma', 'Phenotype', 'HP:0002668', (130, 143)) ('PGL-4', 'Gene', '6390', (197, 202)) ('succinate dehyrogenase complex assembly factor 2', 'Gene', '54949', (40, 88)) ('SDHA', 'Gene', (313, 317)) ('SDHD', 'Gene', (274, 278)) ('SDHB', 'Gene', (19, 23)) ('PGL-2', 'Gene', '54949', (306, 311)) ('underlie', 'Reg', (98, 106)) ('familial paraganglioma', 'Disease', (121, 143)) ('SDHA', 'Gene', '6389', (313, 317)) 11804 22261759 In addition to their recent association with paraganglioma in its heterozygous state, germline homozygous or compound heterozygous SDHA mutations have more commonly been associated with Leigh syndrome (OMIM 256000), a rare neurometabolic disorder. ('paraganglioma', 'Disease', 'MESH:D010235', (45, 58)) ('Leigh syndrome', 'Disease', (186, 200)) ('SDHA', 'Gene', '6389', (131, 135)) ('paraganglioma', 'Phenotype', 'HP:0002668', (45, 58)) ('paraganglioma', 'Disease', (45, 58)) ('mutations', 'Var', (136, 145)) ('SDHA', 'Gene', (131, 135)) ('rare neurometabolic disorder', 'Disease', 'MESH:D035583', (218, 246)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (186, 200)) ('associated', 'Reg', (170, 180)) ('rare neurometabolic disorder', 'Disease', (218, 246)) 11805 22261759 Succinate accumulation has been observed in SDHA mutant fibroblasts and in SDHB mutant tumor tissues and elevated urinary succinate has been associated with, but is not specific to, mitochondrial disorders, hypoxia and seizures. ('elevated urinary succinate', 'Phenotype', 'HP:0020149', (105, 131)) ('tumor', 'Phenotype', 'HP:0002664', (87, 92)) ('seizures', 'Disease', 'MESH:D012640', (219, 227)) ('Succinate', 'Chemical', 'MESH:D019802', (0, 9)) ('Succinate', 'MPA', (0, 9)) ('seizures', 'Phenotype', 'HP:0001250', (219, 227)) ('mitochondrial disorders', 'Disease', 'MESH:D028361', (182, 205)) ('hypoxia', 'Disease', (207, 214)) ('mutant', 'Var', (49, 55)) ('mutant', 'Var', (80, 86)) ('accumulation', 'PosReg', (10, 22)) ('urinary', 'MPA', (114, 121)) ('associated', 'Reg', (141, 151)) ('hypoxia', 'Disease', 'MESH:D000860', (207, 214)) ('mitochondrial disorders', 'Disease', (182, 205)) ('tumor', 'Disease', (87, 92)) ('SDHB', 'Gene', '6390', (75, 79)) ('tumor', 'Disease', 'MESH:D009369', (87, 92)) ('SDHA', 'Gene', (44, 48)) ('SDHA', 'Gene', '6389', (44, 48)) ('succinate', 'Chemical', 'MESH:D019802', (122, 131)) ('seizures', 'Disease', (219, 227)) ('SDHB', 'Gene', (75, 79)) 11807 22261759 We hypothesized that elevated succinate could be measured in urine and plasma from patients with SDHx mutations and also in individuals with PTEN mutations meeting full or partial CS diagnostic criteria. ('PTEN', 'Gene', (141, 145)) ('succinate', 'Chemical', 'MESH:D019802', (30, 39)) ('PTEN', 'Gene', '5728', (141, 145)) ('succinate', 'MPA', (30, 39)) ('elevated', 'PosReg', (21, 29)) ('mutations', 'Var', (102, 111)) ('patients', 'Species', '9606', (83, 91)) ('SDHx', 'Gene', (97, 101)) ('SDHx', 'Chemical', '-', (97, 101)) ('elevated succinate', 'Phenotype', 'HP:0020149', (21, 39)) 11814 22261759 Multiplex ligation dependent probe amplification (MLPA) was performed to identify PTEN, SDHB, SDHC, and SDHD gene duplications or deletions in select mutation negative individuals. ('gene duplications', 'Var', (109, 126)) ('deletions', 'Var', (130, 139)) ('SDHC', 'Gene', '6391', (94, 98)) ('SDHB', 'Gene', '6390', (88, 92)) ('SDHB', 'Gene', (88, 92)) ('SDHC', 'Gene', (94, 98)) ('SDHD', 'Gene', '6392', (104, 108)) ('PTEN', 'Gene', (82, 86)) ('PTEN', 'Gene', '5728', (82, 86)) ('SDHD', 'Gene', (104, 108)) 11824 22261759 Study participants whose phenotypes and family history were consistent with CS or CSL were screened for germline PTEN, SDHB, SDHC or SDHD mutations. ('CSL', 'Gene', '1444', (82, 85)) ('SDHD', 'Gene', '6392', (133, 137)) ('SDHB', 'Gene', '6390', (119, 123)) ('SDHC', 'Gene', (125, 129)) ('participants', 'Species', '9606', (6, 18)) ('PTEN', 'Gene', (113, 117)) ('SDHD', 'Gene', (133, 137)) ('SDHC', 'Gene', '6391', (125, 129)) ('SDHB', 'Gene', (119, 123)) ('PTEN', 'Gene', '5728', (113, 117)) ('CSL', 'Gene', (82, 85)) ('mutations', 'Var', (138, 147)) 11825 22261759 The majority of PTEN mutation negative CS and CSL individuals were also assessed for PTEN duplications and deletions. ('negative', 'NegReg', (30, 38)) ('CSL', 'Gene', (46, 49)) ('mutation', 'Var', (21, 29)) ('PTEN', 'Gene', (16, 20)) ('CSL', 'Gene', '1444', (46, 49)) ('deletions', 'Var', (107, 116)) ('PTEN', 'Gene', '5728', (16, 20)) ('PTEN', 'Gene', (85, 89)) ('PTEN', 'Gene', '5728', (85, 89)) ('duplications', 'Var', (90, 102)) 11827 22261759 Individuals who presented with paraganglioma, or a family history of a known SDH mutation, were screened for germline SDHB, SDHC, SDHD and PTEN mutations. ('paraganglioma', 'Disease', 'MESH:D010235', (31, 44)) ('SDHC', 'Gene', (124, 128)) ('SDHD', 'Gene', (130, 134)) ('mutations', 'Var', (144, 153)) ('SDHB', 'Gene', '6390', (118, 122)) ('SDH', 'Gene', (130, 133)) ('PTEN', 'Gene', (139, 143)) ('SDH', 'Gene', '6390', (118, 121)) ('SDH', 'Gene', '6390', (77, 80)) ('paraganglioma', 'Phenotype', 'HP:0002668', (31, 44)) ('SDH', 'Gene', '6390', (124, 127)) ('mutation', 'Var', (81, 89)) ('SDHB', 'Gene', (118, 122)) ('PTEN', 'Gene', '5728', (139, 143)) ('SDHC', 'Gene', '6391', (124, 128)) ('SDH', 'Gene', (118, 121)) ('SDH', 'Gene', (77, 80)) ('SDHD', 'Gene', '6392', (130, 134)) ('SDH', 'Gene', (124, 127)) ('paraganglioma', 'Disease', (31, 44)) ('SDH', 'Gene', '6390', (130, 133)) 11828 22261759 In total, we enrolled 1 SDHB mutation positive individual, 5 SDHD mutation positive individuals, 10 individuals with paraganglioma with no identifiable mutations, duplications or deletions in SDHB, SDHC or SDHD (SDH mutation negative, PGL), 1 individual with a known VHL mutation, and 1 individual with a known TMEM127 SNP (Table 1). ('paraganglioma', 'Disease', 'MESH:D010235', (117, 130)) ('SDH', 'Gene', (61, 64)) ('deletions', 'Var', (179, 188)) ('SDHD', 'Gene', '6392', (206, 210)) ('TMEM127', 'Gene', '55654', (311, 318)) ('duplications', 'Var', (163, 175)) ('SDHB', 'Gene', (24, 28)) ('SDH', 'Gene', '6390', (206, 209)) ('SDH', 'Gene', '6390', (24, 27)) ('SDH', 'Gene', (192, 195)) ('paraganglioma', 'Phenotype', 'HP:0002668', (117, 130)) ('SDH', 'Gene', '6390', (198, 201)) ('SDHD', 'Gene', (206, 210)) ('SDH', 'Gene', '6390', (212, 215)) ('VHL', 'Disease', 'MESH:D006623', (267, 270)) ('PGL', 'Phenotype', 'HP:0002668', (235, 238)) ('SDHC', 'Gene', '6391', (198, 202)) ('SDHD', 'Gene', '6392', (61, 65)) ('SDHB', 'Gene', '6390', (192, 196)) ('SDH', 'Gene', (206, 209)) ('mutation positive', 'Reg', (29, 46)) ('SDH', 'Gene', (24, 27)) ('SDH', 'Gene', '6390', (61, 64)) ('SDH', 'Gene', '6390', (192, 195)) ('SDH', 'Gene', (198, 201)) ('SDH', 'Gene', (212, 215)) ('SDHD', 'Gene', (61, 65)) ('TMEM127', 'Gene', (311, 318)) ('SDHB', 'Gene', (192, 196)) ('SDHB', 'Gene', '6390', (24, 28)) ('paraganglioma', 'Disease', (117, 130)) ('SDHC', 'Gene', (198, 202)) ('VHL', 'Disease', (267, 270)) 11829 22261759 Organic acid analyses revealed elevated plasma succinate in 13/21 (62%) individuals with germline mutations in any examined gene compared to 5/32 (16%) mutation negative controls (p<0.001). ('elevated plasma succinate', 'Phenotype', 'HP:0020149', (31, 56)) ('plasma succinate', 'MPA', (40, 56)) ('mutations', 'Var', (98, 107)) ('succinate', 'Chemical', 'MESH:D019802', (47, 56)) ('elevated', 'PosReg', (31, 39)) ('Organic acid', 'Chemical', '-', (0, 12)) 11830 22261759 The majority of PTEN mutation positive individuals (10/15; 67%) had elevated plasma succinate, this finding was not observed in PTEN mutation negative CS individuals (3/15; 20%) or the PTEN mutation negative, CSL group (1/4; 25%) or in individuals with PTEN VUS (1/3; 33%) (Table 1). ('PTEN', 'Gene', '5728', (185, 189)) ('CSL', 'Gene', '1444', (209, 212)) ('PTEN', 'Gene', (128, 132)) ('PTEN', 'Gene', '5728', (128, 132)) ('succinate', 'Chemical', 'MESH:D019802', (84, 93)) ('mutation', 'Var', (21, 29)) ('elevated', 'PosReg', (68, 76)) ('PTEN', 'Gene', (16, 20)) ('PTEN', 'Gene', (253, 257)) ('CSL', 'Gene', (209, 212)) ('plasma succinate', 'MPA', (77, 93)) ('PTEN', 'Gene', '5728', (16, 20)) ('PTEN', 'Gene', '5728', (253, 257)) ('elevated plasma succinate', 'Phenotype', 'HP:0020149', (68, 93)) ('PTEN', 'Gene', (185, 189)) 11831 22261759 Elevated plasma succinate was recorded in individuals with SDHB (1/1; 100%) and SDHD mutations (2/5; 40%), and in one individual harboring a TMEM127 SNP (1/1; 100%). ('TMEM127', 'Gene', (141, 148)) ('TMEM127', 'Gene', '55654', (141, 148)) ('SDHD', 'Gene', (80, 84)) ('plasma succinate', 'MPA', (9, 25)) ('Elevated', 'PosReg', (0, 8)) ('mutations', 'Var', (85, 94)) ('succinate', 'Chemical', 'MESH:D019802', (16, 25)) ('SDHB', 'Gene', '6390', (59, 63)) ('SDHB', 'Gene', (59, 63)) ('Elevated plasma succinate', 'Phenotype', 'HP:0020149', (0, 25)) ('SDHD', 'Gene', '6392', (80, 84)) 11832 22261759 Elevated plasma succinate was not found in SDH mutation negative individuals with PGL (0/10; 0%), or in one individual with a mutation in VHL (0/1; 0%) (Table 1). ('SDH', 'Gene', (43, 46)) ('PGL', 'Phenotype', 'HP:0002668', (82, 85)) ('mutation', 'Var', (47, 55)) ('plasma succinate', 'MPA', (9, 25)) ('VHL', 'Disease', (138, 141)) ('VHL', 'Disease', 'MESH:D006623', (138, 141)) ('succinate', 'Chemical', 'MESH:D019802', (16, 25)) ('SDH', 'Gene', '6390', (43, 46)) ('Elevated plasma succinate', 'Phenotype', 'HP:0020149', (0, 25)) 11835 22261759 This report demonstrates that elevated plasma succinate is a common finding among individuals with known pathogenic mutations in PTEN, SDHB, SDHD and TMEM127. ('SDHD', 'Gene', (141, 145)) ('SDHB', 'Gene', '6390', (135, 139)) ('succinate', 'Chemical', 'MESH:D019802', (46, 55)) ('SDHB', 'Gene', (135, 139)) ('PTEN', 'Gene', (129, 133)) ('TMEM127', 'Gene', (150, 157)) ('plasma succinate', 'MPA', (39, 55)) ('mutations', 'Var', (116, 125)) ('elevated', 'PosReg', (30, 38)) ('PTEN', 'Gene', '5728', (129, 133)) ('TMEM127', 'Gene', '55654', (150, 157)) ('elevated plasma succinate', 'Phenotype', 'HP:0020149', (30, 55)) ('SDHD', 'Gene', '6392', (141, 145)) 11836 22261759 Previous studies have reported elevated succinate levels in tumor derived tissue from patients with SDHB mutations and in SDHA mutant fibroblasts, but to the best of our knowledge this is the first report demonstrating an elevation of succinate in plasma from patients with germline mutations in SDHB, SDHD, TMEM127 and PTEN. ('mutations', 'Var', (105, 114)) ('SDHA', 'Gene', '6389', (122, 126)) ('SDHB', 'Gene', '6390', (100, 104)) ('tumor', 'Disease', (60, 65)) ('patients', 'Species', '9606', (86, 94)) ('SDHD', 'Gene', '6392', (302, 306)) ('succinate levels', 'MPA', (40, 56)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('succinate', 'Chemical', 'MESH:D019802', (40, 49)) ('patients', 'Species', '9606', (260, 268)) ('TMEM127', 'Gene', (308, 315)) ('SDHB', 'Gene', (100, 104)) ('mutant', 'Var', (127, 133)) ('SDHD', 'Gene', (302, 306)) ('elevated succinate', 'Phenotype', 'HP:0020149', (31, 49)) ('PTEN', 'Gene', (320, 324)) ('succinate', 'Chemical', 'MESH:D019802', (235, 244)) ('mutations', 'Var', (283, 292)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('TMEM127', 'Gene', '55654', (308, 315)) ('elevated', 'PosReg', (31, 39)) ('SDHB', 'Gene', '6390', (296, 300)) ('succinate', 'MPA', (235, 244)) ('elevation of succinate in plasma', 'Phenotype', 'HP:0020149', (222, 254)) ('elevation', 'PosReg', (222, 231)) ('PTEN', 'Gene', '5728', (320, 324)) ('SDHB', 'Gene', (296, 300)) ('SDHA', 'Gene', (122, 126)) 11837 22261759 Although elevated plasma succinate levels might be expected for individuals with SDHx mutations, it was unexpected for PTEN mutation positive individuals and implies that PTEN mutations somehow reduce the catalytic activity of the SDH protein complex. ('succinate', 'Chemical', 'MESH:D019802', (25, 34)) ('mutations', 'Var', (86, 95)) ('elevated', 'PosReg', (9, 17)) ('mutations', 'Var', (176, 185)) ('catalytic activity', 'MPA', (205, 223)) ('plasma succinate levels', 'MPA', (18, 41)) ('SDHx', 'Chemical', '-', (81, 85)) ('SDH', 'Gene', '6390', (231, 234)) ('PTEN', 'Gene', (119, 123)) ('SDH', 'Gene', '6390', (81, 84)) ('elevated plasma succinate', 'Phenotype', 'HP:0020149', (9, 34)) ('PTEN', 'Gene', '5728', (119, 123)) ('PTEN', 'Gene', (171, 175)) ('PTEN', 'Gene', '5728', (171, 175)) ('SDH', 'Gene', (231, 234)) ('SDH', 'Gene', (81, 84)) ('reduce', 'NegReg', (194, 200)) 11838 22261759 Consistent with previous studies assessing succinate levels in tumor-derived tissue, more than half of our SDHD mutation positive individuals (3/5, 60%) did not demonstrate elevated plasma succinate. ('tumor', 'Disease', (63, 68)) ('SDHD', 'Gene', (107, 111)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('mutation', 'Var', (112, 120)) ('succinate', 'Chemical', 'MESH:D019802', (43, 52)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('elevated plasma succinate', 'Phenotype', 'HP:0020149', (173, 198)) ('succinate', 'Chemical', 'MESH:D019802', (189, 198)) ('SDHD', 'Gene', '6392', (107, 111)) 11839 22261759 Similarly, 33% of PTEN mutation positive individuals did not exhibit elevated plasma succinate. ('PTEN', 'Gene', (18, 22)) ('PTEN', 'Gene', '5728', (18, 22)) ('mutation', 'Var', (23, 31)) ('elevated plasma succinate', 'Phenotype', 'HP:0020149', (69, 94)) ('plasma succinate', 'MPA', (78, 94)) ('succinate', 'Chemical', 'MESH:D019802', (85, 94)) 11842 22261759 It is possible some mutations and/or variants impair and/or enhance the reversibility of these reactions thereby reducing succinate to normal levels. ('enhance', 'PosReg', (60, 67)) ('reversibility', 'MPA', (72, 85)) ('succinate', 'MPA', (122, 131)) ('succinate', 'Chemical', 'MESH:D019802', (122, 131)) ('variants', 'Var', (37, 45)) ('impair', 'NegReg', (46, 52)) ('mutations', 'Var', (20, 29)) ('reducing', 'NegReg', (113, 121)) 11843 22261759 This is one possible explanation for the SDHD and PTEN mutation positive individuals who do not exhibit elevated plasma succinate. ('elevated plasma succinate', 'Phenotype', 'HP:0020149', (104, 129)) ('SDHD', 'Gene', (41, 45)) ('PTEN', 'Gene', (50, 54)) ('SDHD', 'Gene', '6392', (41, 45)) ('PTEN', 'Gene', '5728', (50, 54)) ('succinate', 'Chemical', 'MESH:D019802', (120, 129)) ('mutation', 'Var', (55, 63)) 11846 22261759 One of three patients harboring PTEN polymorphisms exhibited elevated succinate in both plasma and urine. ('polymorphisms', 'Var', (37, 50)) ('succinate', 'Chemical', 'MESH:D019802', (70, 79)) ('PTEN', 'Gene', (32, 36)) ('patients', 'Species', '9606', (13, 21)) ('elevated', 'PosReg', (61, 69)) ('PTEN', 'Gene', '5728', (32, 36)) ('succinate in', 'MPA', (70, 82)) ('elevated succinate', 'Phenotype', 'HP:0020149', (61, 79)) 11848 22261759 It is conceivable that this intronic variant c.210 -7del5, although currently classified as a polymorphism, may actually be a pathogenic mutation leading to splicing defects. ('leading to', 'Reg', (146, 156)) ('-7del5', 'Var', (51, 57)) ('splicing defects', 'MPA', (157, 173)) ('-7del5', 'DELETION', 'None', (51, 57)) ('pathogenic', 'Reg', (126, 136)) 11849 22261759 One plausible explanation for the link between PTEN mutations and elevated plasma succinate is PTEN-induced kinase 1 (PINK1), a mitochondrial localized serine-threonine kinase, transcriptionally activated by PTEN. ('mutations', 'Var', (52, 61)) ('PTEN-induced kinase 1', 'Gene', '65018', (95, 116)) ('PTEN', 'Gene', '5728', (95, 99)) ('PTEN', 'Gene', (208, 212)) ('PTEN', 'Gene', '5728', (208, 212)) ('elevated plasma succinate', 'Phenotype', 'HP:0020149', (66, 91)) ('succinate', 'Chemical', 'MESH:D019802', (82, 91)) ('PTEN', 'Gene', (47, 51)) ('PTEN', 'Gene', (95, 99)) ('PTEN-induced kinase 1', 'Gene', (95, 116)) ('PTEN', 'Gene', '5728', (47, 51)) ('plasma succinate', 'MPA', (75, 91)) ('elevated', 'PosReg', (66, 74)) 11852 22261759 Therefore, mutations that affect the stability or activity of PTEN likely affect PINK1 transcription and downstream function of mitochondrial complex II. ('mutations', 'Var', (11, 20)) ('PTEN', 'Gene', (62, 66)) ('PINK1', 'Gene', (81, 86)) ('PTEN', 'Gene', '5728', (62, 66)) ('mitochondrial complex II', 'Enzyme', (128, 152)) ('activity', 'MPA', (50, 58)) ('affect', 'Reg', (74, 80)) 11854 22261759 Estimated cost for PTEN sequencing, deletion and duplication analysis is approximately US$2,000 per sample. ('duplication analysis', 'Var', (49, 69)) ('PTEN', 'Gene', (19, 23)) ('deletion', 'Var', (36, 44)) ('PTEN', 'Gene', '5728', (19, 23)) 11855 22261759 Likewise, cost for SDHB, SDHC, and SDHD mutation analyses are approximately $1,000, $1,300 and $700, respectively. ('mutation', 'Var', (40, 48)) ('SDHD', 'Gene', (35, 39)) ('SDHD', 'Gene', '6392', (35, 39)) ('SDHB', 'Gene', '6390', (19, 23)) ('SDHC', 'Gene', (25, 29)) ('SDHB', 'Gene', (19, 23)) ('SDHC', 'Gene', '6391', (25, 29)) 11859 22261759 Therefore, based upon our finding that a large proportion of individuals with pathogenic PTEN, SDHB and SDHD mutations exhibit elevated plasma succinate, we suggest that plasma organic acid analysis may be a useful and cost-effective preliminary screening tool to identify individuals for which more costly gene sequencing is warranted. ('elevated plasma succinate', 'Phenotype', 'HP:0020149', (127, 152)) ('plasma succinate', 'MPA', (136, 152)) ('SDHB', 'Gene', '6390', (95, 99)) ('organic acid', 'Chemical', '-', (177, 189)) ('elevated', 'PosReg', (127, 135)) ('pathogenic', 'Reg', (78, 88)) ('SDHD', 'Gene', '6392', (104, 108)) ('mutations', 'Var', (109, 118)) ('SDHB', 'Gene', (95, 99)) ('PTEN', 'Gene', (89, 93)) ('SDHD', 'Gene', (104, 108)) ('succinate', 'Chemical', 'MESH:D019802', (143, 152)) ('PTEN', 'Gene', '5728', (89, 93)) 11860 22261759 In conclusion, we have demonstrated that elevated plasma succinate is a common biochemical disturbance in the majority of PTEN, SDHB and SDHD mutation positive individuals and provides a plausible biochemical link for the shared phenotypic findings across these groups. ('elevated plasma succinate', 'Phenotype', 'HP:0020149', (41, 66)) ('SDHB', 'Gene', (128, 132)) ('mutation positive', 'Var', (142, 159)) ('SDHD', 'Gene', (137, 141)) ('SDHD', 'Gene', '6392', (137, 141)) ('SDHB', 'Gene', '6390', (128, 132)) ('succinate', 'Chemical', 'MESH:D019802', (57, 66)) ('plasma succinate', 'MPA', (50, 66)) ('elevated', 'PosReg', (41, 49)) ('PTEN', 'Gene', (122, 126)) ('PTEN', 'Gene', '5728', (122, 126)) 11862 22261759 CSL Cowden syndrome-like PTEN phosphatase and tensin homologue deleted on chromosome ten SNP single nucleotide polymorphism SDHB succinate dehydrogenase B subunit SDHC succinate dehydrogenase C subunit SDHD succinate dehydrogenase D subunit SNP single nucleotide polymorphism TMEM127 transmembrane protein 127 VHL von Hippel-Lindau ('VHL', 'Disease', 'MESH:D006623', (443, 446)) ('SDHD', 'Gene', '6392', (287, 291)) ('SDHC', 'Gene', '6391', (224, 228)) ('succinate dehydrogenase', 'Gene', (177, 200)) ('PTEN', 'Gene', '5728', (38, 42)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (458, 475)) ('CSL', 'Gene', '1444', (0, 3)) ('SDHD', 'Gene', (287, 291)) ('Cowden syndrome', 'Disease', 'MESH:D006223', (4, 19)) ('succinate dehydrogenase', 'Gene', (240, 263)) ('single nucleotide polymorphism', 'Var', (341, 371)) ('succinate dehydrogenase', 'Gene', (303, 326)) ('SDHC', 'Gene', (224, 228)) ('VHL', 'Disease', (443, 446)) ('SDHB', 'Gene', '6390', (161, 165)) ('succinate dehydrogenase', 'Gene', '6390', (177, 200)) ('Cowden syndrome', 'Disease', (4, 19)) ('CSL', 'Gene', (0, 3)) ('TMEM127', 'Gene', (385, 392)) ('succinate dehydrogenase', 'Gene', '6390', (240, 263)) ('succinate dehydrogenase', 'Gene', '6390', (303, 326)) ('von Hippel-Lindau', 'Disease', (458, 475)) ('SDHB', 'Gene', (161, 165)) ('PTEN', 'Gene', (38, 42)) ('TMEM127', 'Gene', '55654', (385, 392)) 11874 23213586 Evaluation of fat planes is important in differentiating salivary from extrasalivary neoplasms, and the differences in MRI signal characteristics can further improve diagnostic accuracy for certain parapharyngeal space lesions. ('neoplasm', 'Phenotype', 'HP:0002664', (85, 93)) ('improve', 'PosReg', (158, 165)) ('differences', 'Var', (104, 115)) ('neoplasms', 'Phenotype', 'HP:0002664', (85, 94)) ('extrasalivary neoplasms', 'Disease', (71, 94)) ('extrasalivary neoplasms', 'Disease', 'MESH:D009369', (71, 94)) ('parapharyngeal space lesions', 'Disease', (198, 226)) ('MRI signal', 'MPA', (119, 129)) 11938 19243052 The CR and CNR in the early phase microCT were 10.5+-1.25 and 0.1723+-0.004 and in the delayed phase CT was 15.36+-1.01 and 0.1625+-0.02, both substantially lower than MRI. ('0.1625+-0.02', 'Var', (124, 136)) ('CR', 'Chemical', '-', (4, 6)) ('lower', 'NegReg', (157, 162)) ('0.1723+-0.004', 'Var', (62, 75)) 12000 34046474 Its development is related to mutations in the VHL gene (a tumor suppressor gene, 3p25-26). ('tumor', 'Disease', (59, 64)) ('related', 'Reg', (19, 26)) ('VHL', 'Gene', (47, 50)) ('mutations', 'Var', (30, 39)) ('tumor', 'Disease', 'MESH:D009369', (59, 64)) ('VHL', 'Gene', '7428', (47, 50)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) 12045 34046474 Dramatic changes in BP during the operation can change intracranial and intraocular pressure with the risk of vitreous hemorrhage, retinal detachment and cerebral hernia; thus, early detection of intracranial hemorrhage is important. ('intracranial hemorrhage', 'Phenotype', 'HP:0002170', (196, 219)) ('changes', 'Var', (9, 16)) ('retinal detachment and cerebral hernia', 'Disease', 'MESH:D012163', (131, 169)) ('change', 'Reg', (48, 54)) ('retinal detachment', 'Phenotype', 'HP:0000541', (131, 149)) ('vitreous hemorrhage', 'Disease', (110, 129)) ('intracranial hemorrhage', 'Disease', (196, 219)) ('hernia', 'Phenotype', 'HP:0100790', (163, 169)) ('vitreous hemorrhage', 'Disease', 'MESH:D014823', (110, 129)) ('intracranial hemorrhage', 'Disease', 'MESH:D020300', (196, 219)) ('vitreous hemorrhage', 'Phenotype', 'HP:0007902', (110, 129)) 12099 31370003 For the purposes of this analysis and based on prior published evidence, we assumed that any PNM-PMN greater than twice the URL would be considered clinically as highly likely diagnostic of PPGL (i.e., a true positive result). ('PPGL', 'Chemical', '-', (190, 194)) ('PNM-PMN', 'Chemical', '-', (93, 100)) ('diagnostic', 'Reg', (176, 186)) ('PNM-PMN', 'Var', (93, 100)) ('PPGL', 'Disease', (190, 194)) 12140 31370003 Note that the above suggestions do not apply to PPGL screening in patients at-risk for or with known germline PPGL mutations; in such patients with high pre-test probability, supine age-adjusted testing is mandatory for biochemical screening. ('mutations', 'Var', (115, 124)) ('patients', 'Species', '9606', (134, 142)) ('PPGL', 'Chemical', '-', (48, 52)) ('PPGL', 'Chemical', '-', (110, 114)) ('PPGL', 'Gene', (110, 114)) ('patients', 'Species', '9606', (66, 74)) 12153 31370003 However, this is not intended as a study of sensitivity/specificity but rather an analysis of potential diagnostic actions that must follow any abnormal PNM test result; given the rarity of PPGL, the vast majority of positive (especially slightly positive) PNM will be false positive and the clinician will want to avoid sending a high number of patients through unnecessary and expensive imaging tests. ('PPGL', 'Gene', (190, 194)) ('PNM', 'Chemical', '-', (257, 260)) ('PPGL', 'Chemical', '-', (190, 194)) ('patients', 'Species', '9606', (346, 354)) ('PNM', 'Chemical', '-', (153, 156)) ('PNM', 'Var', (257, 260)) 12166 32152203 However, PCPGs with mutations in the succinate dehydrogenase B subunit (SDHB) have a poor prognosis and frequently develop metastatic lesions. ('metastatic lesions', 'CPA', (123, 141)) ('SDHB', 'Gene', (72, 76)) ('succinate dehydrogenase B subunit', 'Gene', (37, 70)) ('succinate dehydrogenase B subunit', 'Gene', '67680', (37, 70)) ('develop', 'Reg', (115, 122)) ('mutations', 'Var', (20, 29)) 12176 32152203 Cluster I PCPGs commonly exhibit abnormal activation of hypoxia signaling, particularly those carrying mutations in succinate dehydrogenase subunits (SDHx), von Hippel-Lindau (VHL), hypoxia-inducible factor 2A (HIF2A), or fumarate hydratase (FH). ('succinate dehydrogenase', 'Gene', (116, 139)) ('von Hippel-Lindau', 'Gene', (157, 174)) ('SDH', 'Gene', (150, 153)) ('mutations', 'Var', (103, 112)) ('hypoxia-inducible factor 2A', 'Gene', (182, 209)) ('von Hippel-Lindau', 'Gene', '22346', (157, 174)) ('hypoxia-inducible factor 2A', 'Gene', '13819', (182, 209)) ('SDH', 'Gene', '30956', (150, 153)) ('HIF2A', 'Gene', (211, 216)) ('hypoxia', 'Disease', (182, 189)) ('hypoxia', 'Disease', 'MESH:D000860', (182, 189)) ('hypoxia', 'Disease', 'MESH:D000860', (56, 63)) ('succinate dehydrogenase', 'Gene', '30956', (116, 139)) ('activation', 'PosReg', (42, 52)) ('FH', 'Disease', 'MESH:D006938', (242, 244)) ('hypoxia', 'Disease', (56, 63)) ('HIF2A', 'Gene', '13819', (211, 216)) 12177 32152203 Cluster II PCPGs commonly show hyperactivation of protein kinase pathways, carry mutations in ret proto-oncogene (RET), neurofibromatosis type 1 (NF1), MYC-associated factor X (MAX), transmembrane protein 127 (TMEM127), or the kinesin family member 1B (KIF1B; refs.). ('kinesin family member 1B', 'Gene', (227, 251)) ('MAX', 'Gene', (177, 180)) ('RET', 'Gene', (114, 117)) ('mutations', 'Var', (81, 90)) ('neurofibromatosis type 1', 'Gene', '18015', (120, 144)) ('KIF1B', 'Gene', (253, 258)) ('kinesin family member 1B', 'Gene', '16561', (227, 251)) ('MAX', 'Gene', '17187', (177, 180)) ('TMEM127', 'Gene', '69470', (210, 217)) ('NF1', 'Gene', '18015', (146, 149)) ('MYC-associated factor X', 'Gene', '17187', (152, 175)) ('RET', 'Gene', '19713', (114, 117)) ('NF1', 'Gene', (146, 149)) ('TMEM127', 'Gene', (210, 217)) ('hyperactivation', 'PosReg', (31, 46)) ('neurofibromatosis type 1', 'Gene', (120, 144)) ('ret', 'Gene', '19713', (94, 97)) ('KIF1B', 'Gene', '16561', (253, 258)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (120, 137)) ('ret', 'Gene', (94, 97)) ('MYC-associated factor X', 'Gene', (152, 175)) ('protein kinase pathways', 'Pathway', (50, 73)) 12179 32152203 Loss-of-function mutations in SDHx lead to substantial loss of the complex II activity and result in reprogramming of cellular metabolic pathways, as indicated by the accumulation of succinate, genome-wide hypermethylation, and a pseudohypoxia phenotype. ('complex II activity', 'MPA', (67, 86)) ('SDH', 'Gene', (30, 33)) ('Loss-of-function', 'NegReg', (0, 16)) ('loss', 'NegReg', (55, 59)) ('accumulation', 'PosReg', (167, 179)) ('SDH', 'Gene', '30956', (30, 33)) ('reprogramming', 'CPA', (101, 114)) ('succinate', 'Chemical', 'MESH:D019802', (183, 192)) ('cellular metabolic pathways', 'Pathway', (118, 145)) ('pseudohypoxia', 'Disease', (230, 243)) ('mutations', 'Var', (17, 26)) ('pseudohypoxia', 'Disease', 'None', (230, 243)) ('succinate', 'MPA', (183, 192)) 12180 32152203 Furthermore, compromised mitochondrial complex II disrupts electron transfer to oxygen, leading to increased formation of reactive oxygen species (ROS) and redox imbalance. ('imbalance', 'Phenotype', 'HP:0002172', (162, 171)) ('electron transfer to oxygen', 'MPA', (59, 86)) ('mitochondrial complex II', 'Enzyme', (25, 49)) ('ROS', 'Chemical', 'MESH:D017382', (147, 150)) ('formation of reactive oxygen species', 'MPA', (109, 145)) ('compromised mitochondrial complex II', 'Phenotype', 'HP:0008314', (13, 49)) ('redox imbalance', 'Phenotype', 'HP:0025463', (156, 171)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (122, 145)) ('compromised', 'Var', (13, 24)) ('oxygen', 'Chemical', 'MESH:D010100', (80, 86)) ('oxygen', 'Chemical', 'MESH:D010100', (131, 137)) ('increased', 'PosReg', (99, 108)) ('redox imbalance', 'MPA', (156, 171)) ('disrupts', 'NegReg', (50, 58)) ('increased formation of reactive oxygen species', 'Phenotype', 'HP:0025464', (99, 145)) 12242 32152203 The primary antibodies used included anti-HIF-1alpha, anti-HIF-2alpha, and anti-DMT1 (Abcam), and anti-TF and anti-TFR2 (Thermo Fisher Scientific). ('HIF-1alpha', 'Gene', (42, 52)) ('TF', 'Gene', '22041', (115, 117)) ('anti-DMT1', 'Var', (75, 84)) ('TF', 'Gene', '22041', (103, 105)) ('HIF-2alpha', 'Gene', '13819', (59, 69)) ('HIF-2alpha', 'Gene', (59, 69)) ('HIF-1alpha', 'Gene', '15251', (42, 52)) 12256 32152203 Genetic defects in SDHx result in substantial loss of mitochondrial complex II (SDH and succinate-ubiquinone oxidoreductase activity) activity, leading to abnormal activation of the hypoxia signaling pathway and a switch to the pseudohypoxia phenotype. ('SDH', 'Gene', (19, 22)) ('SDH', 'Gene', '30956', (80, 83)) ('loss of mitochondrial complex II', 'Phenotype', 'HP:0008314', (46, 78)) ('defects', 'Var', (8, 15)) ('loss', 'NegReg', (46, 50)) ('pseudohypoxia', 'Disease', (228, 241)) ('SDH', 'Gene', '30956', (19, 22)) ('succinate', 'Chemical', 'MESH:D019802', (88, 97)) ('pseudohypoxia', 'Disease', 'None', (228, 241)) ('mitochondrial', 'MPA', (54, 67)) ('hypoxia', 'Disease', (182, 189)) ('hypoxia', 'Disease', 'MESH:D000860', (182, 189)) ('activation', 'PosReg', (164, 174)) ('hypoxia', 'Disease', (234, 241)) ('hypoxia', 'Disease', 'MESH:D000860', (234, 241)) ('switch', 'Reg', (214, 220)) ('activity', 'MPA', (134, 142)) ('SDH', 'Gene', (80, 83)) 12262 32152203 Consistent with the upregulation of iron transporters, we found elevated intracellular labile iron in SDHBKD cells compared with SDHBWT cells (Fig. ('elevated', 'PosReg', (64, 72)) ('intracellular labile iron', 'MPA', (73, 98)) ('iron', 'Chemical', 'MESH:D007501', (94, 98)) ('SDHBKD', 'Var', (102, 108)) ('iron', 'Chemical', 'MESH:D007501', (36, 40)) ('upregulation', 'PosReg', (20, 32)) 12270 32152203 Previous findings indicated that abnormal iron metabolism results in oxidative stress in a variety of malignancies, including SDHB-deficient ones. ('malignancies', 'Disease', 'MESH:D009369', (102, 114)) ('iron', 'Chemical', 'MESH:D007501', (42, 46)) ('abnormal iron metabolism', 'Phenotype', 'HP:0011031', (33, 57)) ('malignancies', 'Disease', (102, 114)) ('SDHB-deficient', 'Gene', (126, 140)) ('abnormal', 'Var', (33, 41)) ('iron metabolism', 'MPA', (42, 57)) ('results in', 'Reg', (58, 68)) ('oxidative stress', 'Phenotype', 'HP:0025464', (69, 85)) ('oxidative stress', 'MPA', (69, 85)) 12272 32152203 A MitoSOX assay confirmed increased ROS in the mitochondria of SDHBKD cells (Fig. ('SDHBKD', 'Var', (63, 69)) ('ROS', 'Chemical', 'MESH:D017382', (36, 39)) ('ROS in the mitochondria', 'MPA', (36, 59)) ('increased', 'PosReg', (26, 35)) 12279 32152203 We hypothesized that pharmacologic concentrations of ascorbic acid could serve as an antitumor agent for SDHB-mutant PCPGs via synergism with the iron overload found in SDHBKD cells. ('ascorbic acid', 'Chemical', 'MESH:D001205', (53, 66)) ('iron', 'Chemical', 'MESH:D007501', (146, 150)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) ('SDHB-mutant', 'Gene', (105, 116)) ('SDHB-mutant', 'Var', (105, 116)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('tumor', 'Disease', (89, 94)) 12282 32152203 Consistently, both the ARE luciferase reporter assay and the MitoSOX Red assay showed increased ROS after ascorbic acid treatment in both cell lines, and higher ROS levels in SDHBKD compared with SDHBWT cells (Fig. ('ROS levels', 'MPA', (161, 171)) ('increased', 'PosReg', (86, 95)) ('ROS', 'Chemical', 'MESH:D017382', (161, 164)) ('ascorbic acid', 'Chemical', 'MESH:D001205', (106, 119)) ('ROS', 'Chemical', 'MESH:D017382', (96, 99)) ('higher', 'PosReg', (154, 160)) ('SDHBKD', 'Var', (175, 181)) ('ROS', 'MPA', (96, 99)) 12284 32152203 To further probe whether iron metabolism underlies redox imbalance, we supplemented SDHBWT and SDHBKD cells with exogenous iron and ascorbic acid and found that iron enhanced ROS with ascorbic acid (Fig. ('iron', 'Chemical', 'MESH:D007501', (25, 29)) ('iron', 'Var', (161, 165)) ('ROS', 'Chemical', 'MESH:D017382', (175, 178)) ('iron', 'Chemical', 'MESH:D007501', (123, 127)) ('imbalance', 'Phenotype', 'HP:0002172', (57, 66)) ('enhanced', 'PosReg', (166, 174)) ('ROS', 'MPA', (175, 178)) ('redox imbalance', 'Phenotype', 'HP:0025463', (51, 66)) ('ascorbic acid', 'Chemical', 'MESH:D001205', (184, 197)) ('ascorbic acid', 'MPA', (184, 197)) ('ascorbic acid', 'Chemical', 'MESH:D001205', (132, 145)) ('iron', 'Chemical', 'MESH:D007501', (161, 165)) 12285 32152203 Moreover, we found elevated labile iron in both SDHBWT and SDHBKD cells after ascorbic acid treatment, although labile iron in SDHBKD cells was higher than in wild-type cells, and knockdown of TF reduced labile iron (Supplementary Fig. ('knockdown', 'Var', (180, 189)) ('ascorbic acid', 'Chemical', 'MESH:D001205', (78, 91)) ('labile iron', 'MPA', (28, 39)) ('labile iron', 'MPA', (204, 215)) ('TF', 'Gene', '22041', (193, 195)) ('elevated', 'PosReg', (19, 27)) ('iron', 'Chemical', 'MESH:D007501', (35, 39)) ('iron', 'Chemical', 'MESH:D007501', (211, 215)) ('labile', 'MPA', (112, 118)) ('iron', 'Chemical', 'MESH:D007501', (119, 123)) ('reduced', 'NegReg', (196, 203)) 12289 32152203 To further evaluate whether ascorbic acid is a therapeutic candidate for the treatment of cancers with mutated SDHB, we characterized concentration-dependent cytotoxicity. ('SDHB', 'Gene', (111, 115)) ('cancers', 'Disease', (90, 97)) ('mutated', 'Var', (103, 110)) ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('ascorbic acid', 'Chemical', 'MESH:D001205', (28, 41)) ('cytotoxicity', 'Disease', (158, 170)) ('cancers', 'Phenotype', 'HP:0002664', (90, 97)) ('cancers', 'Disease', 'MESH:D009369', (90, 97)) ('cytotoxicity', 'Disease', 'MESH:D064420', (158, 170)) 12296 32152203 Moreover, the trypan blue exclusion assay showed reduced cell number of SDHBKD cells compared with SDHBWT counterparts (Fig. ('trypan blue', 'Chemical', 'MESH:D014343', (14, 25)) ('SDHBKD', 'Var', (72, 78)) ('cell number', 'CPA', (57, 68)) ('reduced', 'NegReg', (49, 56)) 12317 32152203 Conversely, a missense mutation at a splice junction of SLC11A2 that impaired iron uptake in erythroid cells and led to iron deficiency-related anemia was discovered in a patient. ('impaired', 'NegReg', (69, 77)) ('missense mutation', 'Var', (14, 31)) ('deficiency-related anemia', 'Disease', (125, 150)) ('iron uptake in erythroid cells', 'MPA', (78, 108)) ('patient', 'Species', '9606', (171, 178)) ('iron', 'Chemical', 'MESH:D007501', (78, 82)) ('deficiency-related anemia', 'Disease', 'MESH:D000740', (125, 150)) ('led to', 'Reg', (113, 119)) ('anemia', 'Phenotype', 'HP:0001903', (144, 150)) ('SLC11A2', 'Gene', (56, 63)) ('iron', 'Chemical', 'MESH:D007501', (120, 124)) 12324 32152203 Redox-active iron converts hydrogen peroxide largely to the highly toxic hydroxyl radical via the Fenton/Haber-Weiss reaction cycles (Fe2+ + H2O2 Fe3+ + HO + OH-; Fe3+ + H2O2 Fe2+ + HOO + H+; ref.). ('Fe2+', 'Chemical', '-', (134, 138)) ('H2O2', 'Chemical', 'MESH:D006861', (141, 145)) ('hydrogen peroxide', 'Chemical', 'MESH:D006861', (27, 44)) ('Fe3+ +', 'Chemical', '-', (148, 154)) ('Fe2+', 'Chemical', '-', (180, 184)) ('Fe3+ +', 'Chemical', '-', (166, 172)) ('H2O2', 'Chemical', 'MESH:D006861', (173, 177)) ('HOO', 'Chemical', '-', (187, 190)) ('hydrogen peroxide', 'MPA', (27, 44)) ('hydroxyl radical', 'Chemical', 'MESH:D017665', (73, 89)) ('Fe2+ + H2O2 Fe3+ + HO + OH-; Fe3+ + H2O2 Fe2+', 'Var', (134, 184)) ('iron', 'Chemical', 'MESH:D007501', (13, 17)) 12327 32152203 Genetic silencing of TF reduced the labile iron pool as well as the ROS level indicating a close association between low levels of SDHB, iron overload, and oxidative stress, consistent with reports that showed a correlation between ROS accumulation and SDH dysfunction. ('ROS level', 'MPA', (68, 77)) ('ROS', 'Chemical', 'MESH:D017382', (68, 71)) ('reduced', 'NegReg', (24, 31)) ('Genetic silencing', 'Var', (0, 17)) ('SDH dysfunction', 'Disease', 'MESH:D009461', (253, 268)) ('ROS', 'Chemical', 'MESH:D017382', (232, 235)) ('labile iron pool', 'MPA', (36, 52)) ('TF', 'Gene', '22041', (21, 23)) ('iron', 'Chemical', 'MESH:D007501', (137, 141)) ('oxidative stress', 'Phenotype', 'HP:0025464', (156, 172)) ('iron', 'Chemical', 'MESH:D007501', (43, 47)) ('SDH dysfunction', 'Disease', (253, 268)) 12329 32152203 Moreover, blocking interception of electrons generated at SDHA by displacement of their acceptor, coenzyme Q, from the membrane part of cluster II by vitamin E succinate and, even more so, its mitochondria-targeted variant caused the massive formation of ROS with ensuing apoptosis induction. ('coenzyme Q', 'Chemical', 'MESH:D014451', (98, 108)) ('caused', 'Reg', (223, 229)) ('blocking', 'NegReg', (10, 18)) ('ROS', 'Chemical', 'MESH:D017382', (255, 258)) ('ROS', 'Protein', (255, 258)) ('variant', 'Var', (215, 222)) ('SDHA', 'Gene', (58, 62)) ('apoptosis', 'CPA', (272, 281)) ('SDHA', 'Gene', '66945', (58, 62)) ('vitamin E succinate', 'Chemical', 'MESH:D024502', (150, 169)) ('formation', 'MPA', (242, 251)) 12332 32152203 SDH depletion leads to the accumulation of succinate, which serves as a competitive inhibitor of DNA/histone demethylases. ('accumulation', 'PosReg', (27, 39)) ('succinate', 'MPA', (43, 52)) ('SDH', 'Gene', (0, 3)) ('depletion', 'Var', (4, 13)) ('succinate', 'Chemical', 'MESH:D019802', (43, 52)) ('SDH', 'Gene', '30956', (0, 3)) 12350 32152203 Aberrant iron metabolism combined with redox disbalance induced by ascorbic acid, could be a promising therapeutic target for malignancies, especially those with "fragile" redox homeostasis. ('ascorbic acid', 'Chemical', 'MESH:D001205', (67, 80)) ('malignancies', 'Disease', 'MESH:D009369', (126, 138)) ('redox disbalance', 'Phenotype', 'HP:0025463', (39, 55)) ('Aberrant', 'Var', (0, 8)) ('fragile', 'Disease', (163, 170)) ('iron metabolism', 'MPA', (9, 24)) ('Aberrant iron metabolism', 'Phenotype', 'HP:0011031', (0, 24)) ('malignancies', 'Disease', (126, 138)) ('fragile', 'Disease', 'MESH:D005600', (163, 170)) ('redox disbalance', 'MPA', (39, 55)) ('iron', 'Chemical', 'MESH:D007501', (9, 13)) 12358 32152203 Ascorbate here was used as a single treatment agent, both for wild-type and mutant tumors in athymic mice. ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('mutant', 'Var', (76, 82)) ('tumors', 'Disease', (83, 89)) ('tumors', 'Phenotype', 'HP:0002664', (83, 89)) ('Ascorbate', 'Chemical', 'MESH:D001205', (0, 9)) ('mice', 'Species', '10090', (101, 105)) ('tumors', 'Disease', 'MESH:D009369', (83, 89)) 12362 32152203 Disruption of this redox state by ascorbic acid may cause an overwhelming ROS burden, which presents a potential strategy toward this tumor type treatment. ('ascorbic acid', 'Chemical', 'MESH:D001205', (34, 47)) ('ROS burden', 'MPA', (74, 84)) ('tumor', 'Disease', 'MESH:D009369', (134, 139)) ('cause', 'Reg', (52, 57)) ('tumor', 'Phenotype', 'HP:0002664', (134, 139)) ('ROS', 'Chemical', 'MESH:D017382', (74, 77)) ('tumor', 'Disease', (134, 139)) ('Disruption', 'Var', (0, 10)) 12395 32038491 Ten percent of CS cases are caused by ectopic ACTH production. ('CS', 'Phenotype', 'HP:0003118', (15, 17)) ('ACTH', 'Gene', (46, 50)) ('ectopic', 'Var', (38, 45)) ('ACTH', 'Gene', '5443', (46, 50)) ('CS', 'Disease', 'MESH:D003480', (15, 17)) ('caused by', 'Reg', (28, 37)) 12439 32038491 On the other hand, about 95% of paraganglioma patients with catecholamine hypersecretion presented with hypertension, while only 33.5% of paraganglioma patients without elevated catecholamine had hypertension. ('patients', 'Species', '9606', (46, 54)) ('hypertension', 'Phenotype', 'HP:0000822', (196, 208)) ('paraganglioma', 'Disease', (138, 151)) ('catecholamine', 'Chemical', 'MESH:D002395', (60, 73)) ('paraganglioma', 'Disease', 'MESH:D010235', (138, 151)) ('paraganglioma', 'Phenotype', 'HP:0002668', (32, 45)) ('presented with', 'Reg', (89, 103)) ('hypertension', 'Disease', 'MESH:D006973', (104, 116)) ('hypertension', 'Disease', (104, 116)) ('catecholamine hypersecretion', 'Var', (60, 88)) ('catecholamine', 'Chemical', 'MESH:D002395', (178, 191)) ('paraganglioma', 'Phenotype', 'HP:0002668', (138, 151)) ('hypertension', 'Phenotype', 'HP:0000822', (104, 116)) ('patients', 'Species', '9606', (152, 160)) ('paraganglioma', 'Disease', (32, 45)) ('hypertension', 'Disease', 'MESH:D006973', (196, 208)) ('hypertension', 'Disease', (196, 208)) ('elevated catecholamine', 'Phenotype', 'HP:0003334', (169, 191)) ('paraganglioma', 'Disease', 'MESH:D010235', (32, 45)) 12458 32038491 The hypersecretion of cortisol may result in hyperglycemia and suppression of the immune system. ('result in', 'Reg', (35, 44)) ('cortisol', 'Chemical', 'MESH:D006854', (22, 30)) ('immune system', 'CPA', (82, 95)) ('hyperglycemia', 'Phenotype', 'HP:0003074', (45, 58)) ('hyperglycemia', 'Disease', (45, 58)) ('hyperglycemia', 'Disease', 'MESH:D006943', (45, 58)) ('hypersecretion', 'Var', (4, 18)) 12485 31214117 In a retrospective collaborative study conducted on behalf of the Italian Endocrine Society on 284 patients affected by a PPGL, only 60% presented hypertensive crises, about 20% presented a hypertension not different from that of patients with essential hypertension, and 21% resulted normotensive (Figure 1). ('hypertension', 'Disease', (190, 202)) ('hypertensive', 'Disease', (147, 159)) ('hypertension', 'Phenotype', 'HP:0000822', (190, 202)) ('hypertension', 'Disease', 'MESH:D006973', (254, 266)) ('patients', 'Species', '9606', (230, 238)) ('patients', 'Species', '9606', (99, 107)) ('PPGL', 'Var', (122, 126)) ('hypertension', 'Disease', (254, 266)) ('hypertension', 'Phenotype', 'HP:0000822', (254, 266)) ('hypertension', 'Disease', 'MESH:D006973', (190, 202)) ('hypertensive', 'Disease', 'MESH:D006973', (147, 159)) ('hypertensive crises', 'Phenotype', 'HP:0100735', (147, 166)) 12490 31214117 Cluster 1 includes mainly tumors linked to mutations of VHL (von Hippel-Lindau) and SDHx (succinate-dehydrogenase) genes and characterized by the induction of a pseudohypoxia mechanism. ('SDHx', 'Gene', (84, 88)) ('succinate', 'Chemical', 'MESH:D019802', (90, 99)) ('SDHx', 'Chemical', '-', (84, 88)) ('von Hippel-Lindau', 'Gene', '7428', (61, 78)) ('tumors', 'Phenotype', 'HP:0002664', (26, 32)) ('pseudohypoxia', 'Disease', (161, 174)) ('von Hippel-Lindau', 'Gene', (61, 78)) ('linked', 'Reg', (33, 39)) ('mutations', 'Var', (43, 52)) ('VHL', 'Disease', (56, 59)) ('VHL', 'Disease', 'MESH:D006623', (56, 59)) ('tumors', 'Disease', 'MESH:D009369', (26, 32)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('pseudohypoxia', 'Disease', 'None', (161, 174)) ('tumors', 'Disease', (26, 32)) 12491 31214117 Cluster 2 includes tumors mainly linked to mutations of NF1 (neurofibromatosis type 1) and RET (responsible for the occurrence of Multiple Endocrine Neoplasia type 2) genes and characterized by the activation of tyrosine-kynase pathway. ('RET', 'Gene', (91, 94)) ('tumors', 'Disease', (19, 25)) ('NF1', 'Gene', '4763', (56, 59)) ('Neoplasia', 'Phenotype', 'HP:0002664', (149, 158)) ('linked', 'Reg', (33, 39)) ('Multiple Endocrine Neoplasia type 2', 'Disease', (130, 165)) ('tyrosine', 'Chemical', 'MESH:D014443', (212, 220)) ('NF1', 'Gene', (56, 59)) ('tumors', 'Disease', 'MESH:D009369', (19, 25)) ('Endocrine Neoplasia', 'Phenotype', 'HP:0100568', (139, 158)) ('neurofibromatosis type 1', 'Gene', (61, 85)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (61, 78)) ('tyrosine-kynase pathway', 'Pathway', (212, 235)) ('activation', 'PosReg', (198, 208)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('RET', 'Gene', '5979', (91, 94)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('neurofibromatosis type 1', 'Gene', '4763', (61, 85)) ('Multiple Endocrine Neoplasia type 2', 'Disease', 'MESH:D018813', (130, 165)) ('mutations', 'Var', (43, 52)) 12494 31214117 In fact, in VHL tumors, the PNMT gene has been found hypermethylated and therefore downregulated. ('hypermethylated', 'Var', (53, 68)) ('PNMT', 'Gene', '5409', (28, 32)) ('tumor', 'Phenotype', 'HP:0002664', (16, 21)) ('downregulated', 'NegReg', (83, 96)) ('VHL tumors', 'Disease', (12, 22)) ('PNMT', 'Gene', (28, 32)) ('tumors', 'Phenotype', 'HP:0002664', (16, 22)) ('VHL tumors', 'Disease', 'MESH:D006623', (12, 22)) 12496 31214117 These biochemical differences explain why MEN2 patients result more symptomatic and have a higher incidence of hypertension, mainly paroxysmal in comparison with VHL patients. ('hypertension', 'Disease', (111, 123)) ('MEN2', 'Var', (42, 46)) ('hypertension', 'Phenotype', 'HP:0000822', (111, 123)) ('paroxysmal', 'Disease', (132, 142)) ('patients', 'Species', '9606', (47, 55)) ('hypertension', 'Disease', 'MESH:D006973', (111, 123)) ('VHL', 'Disease', (162, 165)) ('VHL', 'Disease', 'MESH:D006623', (162, 165)) ('patients', 'Species', '9606', (166, 174)) 12500 31214117 Succinate, which is increased in SDHx mutated PPGL, causes an increase of plasma renin activity in rats but circulating succinate does not differ between hypertensive patients and normotensive controls. ('mutated', 'Var', (38, 45)) ('increased', 'PosReg', (20, 29)) ('SDHx', 'Gene', (33, 37)) ('SDHx', 'Chemical', '-', (33, 37)) ('hypertensive', 'Disease', (154, 166)) ('rats', 'Species', '10116', (99, 103)) ('increase of plasma renin activity', 'Phenotype', 'HP:0000841', (62, 95)) ('Succinate', 'Chemical', 'MESH:D019802', (0, 9)) ('patients', 'Species', '9606', (167, 175)) ('Succinate', 'MPA', (0, 9)) ('increase of plasma renin', 'Phenotype', 'HP:0000848', (62, 86)) ('succinate', 'Chemical', 'MESH:D019802', (120, 129)) ('plasma renin activity', 'MPA', (74, 95)) ('hypertensive', 'Disease', 'MESH:D006973', (154, 166)) ('increase', 'PosReg', (62, 70)) 12501 31214117 Finally, the familial genetic screening permits the discovery of mutation carriers and the early diagnosis of small PPGL whose scanty releasing activity does not cause hypertension. ('small', 'Var', (110, 115)) ('hypertension', 'Phenotype', 'HP:0000822', (168, 180)) ('hypertension', 'Disease', 'MESH:D006973', (168, 180)) ('hypertension', 'Disease', (168, 180)) 12510 31214117 PPGL are among the causes of endocrine hypertension. ('causes', 'Reg', (19, 25)) ('hypertension', 'Phenotype', 'HP:0000822', (39, 51)) ('endocrine hypertension', 'Disease', (29, 51)) ('PPGL', 'Var', (0, 4)) ('endocrine hypertension', 'Disease', 'MESH:D006973', (29, 51)) 12563 28634180 We identified seven candidate mutations in six genes that were further studied using 215 sporadic SI-NET patients. ('patients', 'Species', '9606', (105, 113)) ('mutations', 'Var', (30, 39)) ('SI-NET', 'Disease', (98, 104)) ('SI-NET', 'Disease', 'None', (98, 104)) 12564 28634180 A heterozygous variant causing an amino acid substitution p.(Gly396Asp) in the MutY DNA glycosylase gene (MUTYH) was significantly enriched in SI-NET patients (minor allele frequencies 0.013 and 0.003 for patients and controls respectively) and resulted in odds ratio of 5.09 (95% confidence interval 1.56-14.74; P value = 0.0038). ('patients', 'Species', '9606', (205, 213)) ('SI-NET', 'Disease', 'None', (143, 149)) ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (58, 71)) ('SI-NET', 'Disease', (143, 149)) ('patients', 'Species', '9606', (150, 158)) ('p.(Gly396Asp', 'Var', (58, 70)) 12566 28634180 The inactivation of this gene leads to specific increase of G:C- > T:A transversions in DNA sequence and has been shown to cause various cancers in humans and experimental animals. ('humans', 'Species', '9606', (148, 154)) ('cancer', 'Phenotype', 'HP:0002664', (137, 143)) ('inactivation', 'Var', (4, 16)) ('DNA sequence', 'MPA', (88, 100)) ('cause', 'Reg', (123, 128)) ('cancers', 'Disease', 'MESH:D009369', (137, 144)) ('cancers', 'Phenotype', 'HP:0002664', (137, 144)) ('cancers', 'Disease', (137, 144)) ('G:C- > T', 'MPA', (60, 68)) ('increase', 'PosReg', (48, 56)) 12567 28634180 Our results suggest that p.(Gly396Asp) in MUTYH, and potentially other mutations in additional members of the same DNA excision-repair pathway (such as the OGG1 gene) might be involved in driving the tumorigenesis leading to familial and sporadic SI-NETs. ('tumor', 'Disease', 'MESH:D009369', (200, 205)) ('SI-NETs', 'Disease', (247, 254)) ('tumor', 'Phenotype', 'HP:0002664', (200, 205)) ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (25, 38)) ('tumor', 'Disease', (200, 205)) ('involved', 'Reg', (176, 184)) ('p.(Gly396Asp', 'Var', (25, 37)) ('SI-NETs', 'Disease', 'None', (247, 254)) 12580 28634180 Frameshift and heterozygous mutations involving the CDKN1B gene, coding for the tumor suppressor p27, were recently described in approximately 8 and 14% of the analyzed tumors. ('tumor', 'Disease', 'MESH:D009369', (80, 85)) ('CDKN1B', 'Gene', (52, 58)) ('heterozygous mutations', 'Var', (15, 37)) ('tumor', 'Disease', 'MESH:D009369', (169, 174)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('p27', 'Gene', '10671', (97, 100)) ('tumors', 'Disease', 'MESH:D009369', (169, 175)) ('tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('tumor', 'Disease', (80, 85)) ('p27', 'Gene', (97, 100)) ('tumors', 'Phenotype', 'HP:0002664', (169, 175)) ('Frameshift', 'Var', (0, 10)) ('tumor', 'Disease', (169, 174)) ('CDKN1B', 'Gene', '1027', (52, 58)) ('tumors', 'Disease', (169, 175)) ('described', 'Reg', (116, 125)) 12581 28634180 About 50% of the tumors had deleted or mutated SMAD genes, suggesting an involvement of the TGF-beta pathway in tumor formation. ('involvement', 'Reg', (73, 84)) ('tumors', 'Phenotype', 'HP:0002664', (17, 23)) ('tumor', 'Disease', (17, 22)) ('tumors', 'Disease', (17, 23)) ('tumors', 'Disease', 'MESH:D009369', (17, 23)) ('tumor', 'Disease', 'MESH:D009369', (112, 117)) ('SMAD', 'Gene', (47, 51)) ('TGF-beta', 'Gene', '7040', (92, 100)) ('mutated', 'Var', (39, 46)) ('SMAD', 'Gene', '4086', (47, 51)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('tumor', 'Disease', 'MESH:D009369', (17, 22)) ('tumor', 'Disease', (112, 117)) ('TGF-beta', 'Gene', (92, 100)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) 12582 28634180 Single-nucleotide variants were found in MEN1, FGFR2, HOOK3, EZH2, MLF1, CARD11, VHL, NONO and SMAD1. ('MLF1', 'Gene', '4291', (67, 71)) ('Single-nucleotide variants', 'Var', (0, 26)) ('HOOK3', 'Gene', (54, 59)) ('SMAD1', 'Gene', '4086', (95, 100)) ('NONO', 'Gene', '4841', (86, 90)) ('CARD11', 'Gene', (73, 79)) ('MLF1', 'Gene', (67, 71)) ('CARD11', 'Gene', '84433', (73, 79)) ('HOOK3', 'Gene', '84376', (54, 59)) ('VHL', 'Gene', (81, 84)) ('FGFR2', 'Gene', (47, 52)) ('MEN1', 'Gene', '4221', (41, 45)) ('EZH2', 'Gene', (61, 65)) ('EZH2', 'Gene', '2146', (61, 65)) ('NONO', 'Gene', (86, 90)) ('SMAD1', 'Gene', (95, 100)) ('VHL', 'Gene', '7428', (81, 84)) ('FGFR2', 'Gene', '2263', (47, 52)) ('MEN1', 'Gene', (41, 45)) 12583 28634180 The amplifications of AKT1 or AKT2 were the most common alterations detected in the cases with an alteration of the PI3K/Akt/mTOR signaling pathway. ('Akt', 'Gene', (121, 124)) ('mTOR', 'Gene', '2475', (125, 129)) ('AKT2', 'Gene', '208', (30, 34)) ('mTOR', 'Gene', (125, 129)) ('amplifications', 'Var', (4, 18)) ('alteration', 'Reg', (98, 108)) ('AKT2', 'Gene', (30, 34)) ('Akt', 'Gene', '207', (121, 124)) ('AKT1', 'Gene', '207', (22, 26)) ('AKT1', 'Gene', (22, 26)) 12586 28634180 We published a series of 10 families with SI-NETs and could show that deletion of chromosome 18 in tumors was less frequently found in these familial cases as compared to sporadic patients. ('deletion', 'Var', (70, 78)) ('SI-NETs', 'Disease', 'None', (42, 49)) ('SI-NETs', 'Disease', (42, 49)) ('tumors', 'Disease', (99, 105)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('tumors', 'Phenotype', 'HP:0002664', (99, 105)) ('patients', 'Species', '9606', (180, 188)) ('tumors', 'Disease', 'MESH:D009369', (99, 105)) 12588 28634180 Furthermore, a group at NIH presented a series of 33 families, having at least two SI-NET patients, and could identify a 4-bp deletion in the inositol polyphosphate multikinase gene (IPMK) segregating in one large family. ('inositol polyphosphate multikinase', 'Gene', '253430', (142, 176)) ('SI-NET', 'Disease', 'None', (83, 89)) ('deletion', 'Var', (126, 134)) ('IPMK', 'Gene', '253430', (183, 187)) ('SI-NET', 'Disease', (83, 89)) ('IPMK', 'Gene', (183, 187)) ('patients', 'Species', '9606', (90, 98)) ('inositol polyphosphate multikinase', 'Gene', (142, 176)) 12617 28634180 After having identified candidate variants from WGS and WES experiments on familial SI-NETs cases, we designed validation primers for seven loci using PrimerZ, using the option 'Input SNPs or Positions' with default settings except for the product size ranges that was restricted to 100-400 base pairs (http://genepipe.ngc.sinica.edu.tw/primerz/). ('familial SI-NETs', 'Disease', 'MESH:D009394', (75, 91)) ('familial SI-NETs', 'Disease', (75, 91)) ('variants', 'Var', (34, 42)) 12619 28634180 Paraffin-embedded tumor tissue specimens from SI-NET patients with and without verified mutations in MUTYH, OGG1 TERT, SDHB and SDHD were cut into approximately 4-microm thick sections and attached to positively charged glass slides (Superfrost Plus, Menzel Glaser, Braunschweig, Germany). ('SI-NET', 'Disease', (46, 52)) ('Paraffin', 'Chemical', 'MESH:D010232', (0, 8)) ('patients', 'Species', '9606', (53, 61)) ('tumor', 'Disease', (18, 23)) ('TERT', 'Gene', '7015', (113, 117)) ('SDHB', 'Gene', '6390', (119, 123)) ('mutations', 'Var', (88, 97)) ('tumor', 'Disease', 'MESH:D009369', (18, 23)) ('SDHB', 'Gene', (119, 123)) ('SDHD', 'Gene', '6392', (128, 132)) ('MUTYH', 'Gene', (101, 106)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) ('SI-NET', 'Disease', 'None', (46, 52)) ('TERT', 'Gene', (113, 117)) ('OGG1', 'Gene', (108, 112)) ('SDHD', 'Gene', (128, 132)) 12630 28634180 We populated these lists with variants present in one (for families with only one affected subjects sequenced) or more cancer patients, prioritizing those reported as pathogenic (specifically cancer causing) in ClinVar database (https://www.ncbi.nlm.nih.gov/clinvar/) or predicted to be damaging by at least one of the three functional prediction algorithms: SIFT, Polyphen and MutationTaster. ('variants', 'Var', (30, 38)) ('SIFT', 'Disease', (359, 363)) ('cancer', 'Disease', 'MESH:D009369', (119, 125)) ('cancer', 'Disease', (119, 125)) ('cancer', 'Disease', (192, 198)) ('cancer', 'Disease', 'MESH:D009369', (192, 198)) ('patients', 'Species', '9606', (126, 134)) ('SIFT', 'Disease', 'None', (359, 363)) ('MutationTaster', 'Var', (378, 392)) ('cancer', 'Phenotype', 'HP:0002664', (192, 198)) ('cancer', 'Phenotype', 'HP:0002664', (119, 125)) 12631 28634180 The heterozygous missense variant in the telomerase reverse transcriptase gene (TERT) p.(Ala279Thr) was the most common DNA sequence variant identified among the 24 familial SI-NET patients and was observed in six patients from three families (subjects A1, A2, A6, A7, B3 and M2) (Fig. ('missense', 'Var', (17, 25)) ('telomerase reverse transcriptase', 'Gene', (41, 73)) ('patients', 'Species', '9606', (214, 222)) ('telomerase reverse transcriptase', 'Gene', '7015', (41, 73)) ('familial SI-NET', 'Disease', 'MESH:D009394', (165, 180)) ('p.(Ala279Thr)', 'Mutation', 'rs61748181', (86, 99)) ('familial SI-NET', 'Disease', (165, 180)) ('patients', 'Species', '9606', (181, 189)) ('TERT', 'Gene', (80, 84)) ('TERT', 'Gene', '7015', (80, 84)) 12632 28634180 Prediction of the phenotypic effect of this variant was discordant in SIFT, Polyphen and MutationTaster; reported as 'tolerated', 'probably damaging', and 'disease causing' respectively. ('SIFT', 'Disease', 'None', (70, 74)) ('SIFT', 'Disease', (70, 74)) ("'tolerated", 'PosReg', (117, 127)) ('variant', 'Var', (44, 51)) 12634 28634180 In addition, in two members of family A, an additional heterozygous variant of the TERT gene p.(His412Tyr) was uncovered. ('p.(His412Tyr', 'Var', (93, 105)) ('p.(His412Tyr)', 'SUBSTITUTION', 'None', (93, 106)) ('TERT', 'Gene', (83, 87)) ('TERT', 'Gene', '7015', (83, 87)) 12635 28634180 It was present in A4 (married to affected subject A1) and he passed on this allele to his affected son A2, who is therefore a compound heterozygote for two TERT gene variants; p.(Ala279Thr) and p.(His412Tyr). ('p.(His412Tyr)', 'SUBSTITUTION', 'None', (194, 207)) ('p.(Ala279Thr)', 'Mutation', 'rs61748181', (176, 189)) ('p.(His412Tyr', 'Var', (194, 206)) ('TERT', 'Gene', (156, 160)) ('p.(Ala279Thr', 'Var', (176, 188)) ('TERT', 'Gene', '7015', (156, 160)) 12636 28634180 SIFT, Polyphen and MutationTaster predicted this variant in a similar way as the former one (tolerated, probably damaging and disease causing respectively) (Table 3). ('variant', 'Var', (49, 56)) ('SIFT', 'Disease', 'None', (0, 4)) ('SIFT', 'Disease', (0, 4)) 12637 28634180 Both Ala279Thr and His412Tyr variants are described as pathogenic in ClinVar and were reported in patients affected with bone marrow failure, aplastic anemia and dyskeratosis congenita, a telomere-related disorder. ('Ala279Thr', 'Var', (5, 14)) ('bone marrow failure', 'Disease', (121, 140)) ('pathogenic', 'Reg', (55, 65)) ('Ala279Thr', 'Chemical', '-', (5, 14)) ('anemia', 'Phenotype', 'HP:0001903', (151, 157)) ('aplastic anemia', 'Phenotype', 'HP:0001915', (142, 157)) ('dyskeratosis congenita', 'Disease', (162, 184)) ('His412Tyr', 'SUBSTITUTION', 'None', (19, 28)) ('aplastic anemia', 'Disease', 'MESH:D000741', (142, 157)) ('patients', 'Species', '9606', (98, 106)) ('bone marrow failure', 'Disease', 'MESH:D000080983', (121, 140)) ('dyskeratosis congenita', 'Disease', 'MESH:D019871', (162, 184)) ('bone marrow failure', 'Phenotype', 'HP:0005528', (121, 140)) ('His412Tyr', 'Var', (19, 28)) ('aplastic anemia', 'Disease', (142, 157)) ('ClinVar', 'Disease', (69, 76)) 12638 28634180 This variant has been furthermore described in esophageal carcinomas, both in heterozygous and homozygous states. ('esophageal carcinomas', 'Phenotype', 'HP:0011459', (47, 68)) ('carcinomas', 'Phenotype', 'HP:0030731', (58, 68)) ('esophageal carcinomas', 'Disease', 'MESH:D004938', (47, 68)) ('variant', 'Var', (5, 12)) ('esophageal carcinomas', 'Disease', (47, 68)) ('described', 'Reg', (34, 43)) 12639 28634180 In comparison with normal ones, cells expressing the TERT A279T variant were shown to have shorter telomeres and impaired canonical and non-canonical telomerase functions. ('A279T', 'Var', (58, 63)) ('impaired', 'NegReg', (113, 121)) ('canonical', 'MPA', (122, 131)) ('A279T', 'SUBSTITUTION', 'None', (58, 63)) ('shorter', 'NegReg', (91, 98)) 12640 28634180 NGS analysis of the whole-exome and whole-genome data on the familial cases also revealed four likely polymorphisms in three genes (SDHA, SDHB and SDHD) encoding different subunits of the mitochondrial succinate dehydrogenase complex (Fig. ('SDHB', 'Gene', (138, 142)) ('SDHA', 'Gene', '6389', (132, 136)) ('polymorphisms', 'Var', (102, 115)) ('SDHA', 'Gene', (132, 136)) ('SDHD', 'Gene', '6392', (147, 151)) ('SDHD', 'Gene', (147, 151)) ('SDHB', 'Gene', '6390', (138, 142)) 12641 28634180 The SDHD His50Arg and Gly12Ser variants have previously described neuroendocrine tumors such as pheochromocytomas and paragangliomas, as well as midgut carcinoids and Merkel cell carcinomas. ('His50Arg', 'Var', (9, 17)) ('Gly12Ser', 'Chemical', '-', (22, 30)) ('midgut carcinoids', 'Disease', (145, 162)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (96, 113)) ('pheochromocytomas', 'Disease', (96, 113)) ('carcinoids', 'Phenotype', 'HP:0100570', (152, 162)) ('His50Arg', 'SUBSTITUTION', 'None', (9, 17)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (66, 87)) ('carcinoid', 'Phenotype', 'HP:0100570', (152, 161)) ('paragangliomas', 'Disease', 'MESH:D010235', (118, 132)) ('paraganglioma', 'Phenotype', 'HP:0002668', (118, 131)) ('paragangliomas', 'Phenotype', 'HP:0002668', (118, 132)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (96, 113)) ('Merkel cell carcinomas', 'Disease', 'MESH:D015266', (167, 189)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (66, 86)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (66, 87)) ('SDHD', 'Gene', '6392', (4, 8)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (71, 86)) ('carcinomas', 'Phenotype', 'HP:0030731', (179, 189)) ('tumors', 'Phenotype', 'HP:0002664', (81, 87)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (96, 112)) ('described', 'Reg', (56, 65)) ('Merkel cell carcinomas', 'Disease', (167, 189)) ('paragangliomas', 'Disease', (118, 132)) ('SDHD', 'Gene', (4, 8)) ('Gly12Ser', 'Var', (22, 30)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('neuroendocrine tumors', 'Disease', (66, 87)) 12642 28634180 The pathogenicity of SDHB Ser163Pro according to ClinVar is controversial, but this allele has previously been detected in familial cases of pheochromocytoma and paraganglioma. ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (141, 175)) ('detected', 'Reg', (111, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (141, 157)) ('SDHB', 'Gene', '6390', (21, 25)) ('paraganglioma', 'Phenotype', 'HP:0002668', (162, 175)) ('Ser163Pro', 'SUBSTITUTION', 'None', (26, 35)) ('SDHB', 'Gene', (21, 25)) ('Ser163Pro', 'Var', (26, 35)) 12643 28634180 A polymorphism affecting the A subunit of the complex, SDHA Asp38Val, detected in two affected individuals of family G, G1 and G2, has been previously described in gastrointestinal stromal tumors. ('SDHA', 'Gene', '6389', (55, 59)) ('described', 'Reg', (151, 160)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (164, 195)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (164, 195)) ('SDHA', 'Gene', (55, 59)) ('tumors', 'Phenotype', 'HP:0002664', (189, 195)) ('Asp38Val', 'SUBSTITUTION', 'None', (60, 68)) ('polymorphism', 'Var', (2, 14)) ('Asp38Val', 'Var', (60, 68)) ('gastrointestinal stromal tumors', 'Disease', (164, 195)) 12644 28634180 The above studies describe homozygous inactivation as the most plausible mechanism of tumorigenesis for these variants of the mitochondrial SDHC. ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('tumor', 'Disease', (86, 91)) ('variants', 'Var', (110, 118)) ('mitochondrial SDHC', 'Gene', (126, 144)) ('tumor', 'Disease', 'MESH:D009369', (86, 91)) 12646 28634180 Furthermore, a heterozygous variant causing an amino acid substitution p.(Gly396Asp) in the MutY DNA glycosylase gene (MUTYH) was observed in two SI-NET patients from different families (subjects O1 and No1) (Fig. ('SI-NET', 'Disease', (146, 152)) ('patients', 'Species', '9606', (153, 161)) ('p.(Gly396Asp', 'Var', (71, 83)) ('SI-NET', 'Disease', 'None', (146, 152)) ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (71, 84)) 12647 28634180 Germline biallelic variants of MUTYH (including Gly396Asp) have been previously described in patients affected with multiple colorectal adenomas and adenomatous polyposis, as well as pancreatic NETs. ('Gly396Asp', 'Var', (48, 57)) ('adenomatous polyposis', 'Disease', (149, 170)) ('described', 'Reg', (80, 89)) ('pancreatic', 'Disease', (183, 193)) ('multiple colorectal adenomas', 'Disease', 'MESH:C563924', (116, 144)) ('adenomatous polyposis', 'Phenotype', 'HP:0005227', (149, 170)) ('adenomatous polyposis', 'Disease', 'MESH:D011125', (149, 170)) ('Gly396Asp', 'SUBSTITUTION', 'None', (48, 57)) ('MUTYH', 'Gene', (31, 36)) ('multiple colorectal adenomas', 'Disease', (116, 144)) ('patients', 'Species', '9606', (93, 101)) ('pancreatic', 'Disease', 'MESH:D010195', (183, 193)) 12648 28634180 Finally, in family M (subject M1), we also observed a variant in the 8-oxoguanine DNA glycosylase gene (OGG1) p.(Arg46Gln), which was predicted as damaging by all three methods, and this gene was therefore considered a candidate for further analysis. ('p.(Arg46Gln)', 'SUBSTITUTION', 'None', (110, 122)) ('8-oxoguanine DNA glycosylase', 'Gene', '4968', (69, 97)) ('8-oxoguanine DNA glycosylase', 'Gene', (69, 97)) ('OGG1', 'Gene', (104, 108)) ('p.(Arg46Gln', 'Var', (110, 121)) 12649 28634180 A study of human kidney carcinomas has suggested that this variant might be a risk allele. ('human', 'Species', '9606', (11, 16)) ('kidney carcinomas', 'Disease', (17, 34)) ('kidney carcinomas', 'Disease', 'MESH:C538614', (17, 34)) ('variant', 'Var', (59, 66)) ('carcinomas', 'Phenotype', 'HP:0030731', (24, 34)) 12650 28634180 In summary, for the familial SI-NET patients, we analyzed 15 small families and identified seven heterozygous missense variants affecting six genes, which could be further tested in sporadic SI-NET patients (see below). ('missense variants', 'Var', (110, 127)) ('patients', 'Species', '9606', (36, 44)) ('patients', 'Species', '9606', (198, 206)) ('familial SI-NET', 'Disease', 'MESH:D009394', (20, 35)) ('SI-NET', 'Disease', 'None', (191, 197)) ('familial SI-NET', 'Disease', (20, 35)) ('SI-NET', 'Disease', 'None', (29, 35)) ('SI-NET', 'Disease', (29, 35)) ('SI-NET', 'Disease', (191, 197)) 12651 28634180 All identified variants were reported as involved in cancer in ClinVar and pinpointed as possible pathogenic by our unbiased filtering pipeline of NGS data; thus, both approaches converged on the same candidate mutations. ('cancer', 'Disease', (53, 59)) ('cancer', 'Disease', 'MESH:D009369', (53, 59)) ('involved', 'Reg', (41, 49)) ('cancer', 'Phenotype', 'HP:0002664', (53, 59)) ('variants', 'Var', (15, 23)) 12654 28634180 It should also be mentioned that we tested, with negative results (details not shown), our families for mutations in the inositol polyphosphate multikinase gene (IPMK), which has been reported in one large family with SI-NETs. ('inositol polyphosphate multikinase', 'Gene', (121, 155)) ('SI-NETs', 'Disease', (218, 225)) ('mutations', 'Var', (104, 113)) ('IPMK', 'Gene', (162, 166)) ('IPMK', 'Gene', '253430', (162, 166)) ('SI-NETs', 'Disease', 'None', (218, 225)) ('inositol polyphosphate multikinase', 'Gene', '253430', (121, 155)) 12656 28634180 Samples obtained from 215 unrelated subjects affected with SI-NETs were screened for the seven candidate variants and the results are summarized in Table 3. ('SI-NETs', 'Disease', 'None', (59, 66)) ('variants', 'Var', (105, 113)) ('SI-NETs', 'Disease', (59, 66)) 12663 28634180 A comparison of allele frequencies for the seven variants showed that the heterozygous variant causing amino acid substitution p.(Gly396Asp) in MUTYH was significantly enriched among the patients affected with SI-NETs, compared to all the control cohorts. ('patients', 'Species', '9606', (187, 195)) ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (127, 140)) ('SI-NETs', 'Disease', 'None', (210, 217)) ('SI-NETs', 'Disease', (210, 217)) ('p.(Gly396Asp', 'Var', (127, 139)) 12664 28634180 The minor allele frequencies (MAFs) for the MUTYH p.(Gly396Asp) variant were: 0.009, 0.004 and 0.003 for the Exac-, 1000 Genomes-, and EpiHealth cohort respectively. ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (50, 63)) ('MAF', 'Gene', (30, 33)) ('p.(Gly396Asp', 'Var', (50, 62)) ('MAF', 'Gene', '4094', (30, 33)) 12665 28634180 The overall minor allele frequency of this variant in our collection of affected subjects (sporadic and familial subjects) was 2-5 times higher (MAF = 0.016) when considering subjects harboring the variant in the germline. ('MAF', 'Gene', '4094', (145, 148)) ('variant', 'Var', (43, 50)) ('MAF', 'Gene', (145, 148)) ('higher', 'PosReg', (137, 143)) 12666 28634180 A similar situation was observed when studying variants found in any tissue (germline plus tumor samples) resulting in MAF = 0.013; 1.4-4 times higher than that in controls. ('MAF', 'Gene', '4094', (119, 122)) ('variants', 'Var', (47, 55)) ('MAF', 'Gene', (119, 122)) ('germline plus tumor', 'Disease', (77, 96)) ('higher', 'PosReg', (144, 150)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('germline plus tumor', 'Disease', 'MESH:D009369', (77, 96)) 12668 28634180 Calculations of odds ratios (Fisher's exact test) for being affected with SI-NETs and having SNP causing amino acid substitution p.(Gly396Asp) in MUTYH were 6.19 (95% confidence interval (CI): 1.7-19.02, P value = 0.0034) and 5.09 (95% CI: 1.56-14.74, P value = 0.0038) (Table 3). ('SI-NETs', 'Disease', 'None', (74, 81)) ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (129, 142)) ('SI-NETs', 'Disease', (74, 81)) ('p.(Gly396Asp', 'Var', (129, 141)) 12670 28634180 The 95% CIs for the odds ratios are wide, largely because of the low MAFs in controls, suggesting that future studies of p.(Gly396Asp) in MUTYH in SI-NET patients are necessary using a larger cohort of patients. ('p.(Gly396Asp', 'Var', (121, 133)) ('SI-NET', 'Disease', 'None', (147, 153)) ('patients', 'Species', '9606', (154, 162)) ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (121, 134)) ('MAF', 'Gene', (69, 72)) ('patients', 'Species', '9606', (202, 210)) ('SI-NET', 'Disease', (147, 153)) ('MAF', 'Gene', '4094', (69, 72)) 12671 28634180 The monoallelic mutation MUTYH p.(Gly396Asp) was also uncovered in two samples of tumor DNA; i.e. ('tumor', 'Disease', 'MESH:D009369', (82, 87)) ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (31, 44)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('p.(Gly396Asp', 'Var', (31, 43)) ('tumor', 'Disease', (82, 87)) 12673 28634180 However, due to the unavailability of tumor specimens from the relevant patients, we have not been able to carefully study tumors from all patients for deletions on 1p (where MUTYH is located), with an aim to uncover the mechanism of inactivation of the other allele of the MUTYH gene. ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('tumors', 'Disease', (123, 129)) ('tumors', 'Disease', 'MESH:D009369', (123, 129)) ('unavailability of tumor', 'Disease', 'MESH:D009369', (20, 43)) ('patients', 'Species', '9606', (139, 147)) ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('deletions', 'Var', (152, 161)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('unavailability of tumor', 'Disease', (20, 43)) ('patients', 'Species', '9606', (72, 80)) 12675 28634180 The OGG1 mutation p.(Arg46Gln) was enriched in SI-NETs about two times, compared to EpiHealth, but our patient cohort would need to be considerably larger in order to reach the statistical significance, suggesting that future studies of OGG1 p.(Arg46Gln) candidate mutation in SI-NET patients are necessary. ('p.(Arg46Gln', 'Var', (242, 253)) ('SI-NET', 'Disease', 'None', (277, 283)) ('p.(Arg46Gln)', 'SUBSTITUTION', 'None', (18, 30)) ('SI-NETs', 'Disease', (47, 54)) ('SI-NET', 'Disease', (47, 53)) ('patients', 'Species', '9606', (284, 292)) ('SI-NET', 'Disease', 'None', (47, 53)) ('SI-NET', 'Disease', (277, 283)) ('p.(Arg46Gln)', 'SUBSTITUTION', 'None', (242, 254)) ('OGG1', 'Gene', (4, 8)) ('patient', 'Species', '9606', (103, 110)) ('OGG1', 'Gene', (237, 241)) ('SI-NETs', 'Disease', 'None', (47, 54)) ('patient', 'Species', '9606', (284, 291)) ('p.(Arg46Gln', 'Var', (18, 29)) 12676 28634180 As for the mutation in MUTYH gene, also this variant in OGG1 was present in a single copy in all studied subjects, including one metastasis and one PT from apparently sporadic patients. ('OGG1', 'Gene', (56, 60)) ('patients', 'Species', '9606', (176, 184)) ('variant', 'Var', (45, 52)) 12685 28634180 These results for the SDHB and SDHD genes may suggest that these mutations do not have an effect on the expression of proteins of the mitochondrial complex II, speaking against their possible role in this disease. ('SDHD', 'Gene', (31, 35)) ('SDHB', 'Gene', '6390', (22, 26)) ('SDHB', 'Gene', (22, 26)) ('SDHD', 'Gene', '6392', (31, 35)) ('mutations', 'Var', (65, 74)) 12686 28634180 This is in contrast to observations in pheochromocytomas and paragangliomas, where it has been shown that pathogenic variants of these genes, present in tumors in two copies, lead to loss of expression with subsequent impaired enzymatic activity. ('tumors', 'Disease', 'MESH:D009369', (153, 159)) ('enzymatic activity', 'MPA', (227, 245)) ('loss', 'NegReg', (183, 187)) ('paraganglioma', 'Phenotype', 'HP:0002668', (61, 74)) ('of expression', 'MPA', (188, 201)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (39, 56)) ('paragangliomas', 'Disease', 'MESH:D010235', (61, 75)) ('impaired', 'NegReg', (218, 226)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('variants', 'Var', (117, 125)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (39, 55)) ('tumors', 'Disease', (153, 159)) ('tumors', 'Phenotype', 'HP:0002664', (153, 159)) ('pheochromocytomas', 'Disease', (39, 56)) ('paragangliomas', 'Disease', (61, 75)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (39, 56)) ('paragangliomas', 'Phenotype', 'HP:0002668', (61, 75)) 12689 28634180 Using analysis of germline DNA from family members affected with SI-NETs and sporadic SI-NET patients, we identified a monoallelic mutation causing an amino acid substitution p.(Gly396Asp) in MUTYH that was significantly enriched among the patients affected with SI-NETs, compared to the controls. ('SI-NET', 'Disease', (263, 269)) ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (175, 188)) ('MUTYH', 'Gene', (192, 197)) ('SI-NETs', 'Disease', 'None', (65, 72)) ('SI-NETs', 'Disease', (65, 72)) ('p.(Gly396Asp', 'Var', (175, 187)) ('SI-NET', 'Disease', 'None', (86, 92)) ('SI-NET', 'Disease', 'None', (263, 269)) ('SI-NET', 'Disease', 'None', (65, 71)) ('SI-NET', 'Disease', (65, 71)) ('patients', 'Species', '9606', (240, 248)) ('SI-NETs', 'Disease', 'None', (263, 270)) ('SI-NET', 'Disease', (86, 92)) ('SI-NETs', 'Disease', (263, 270)) ('patients', 'Species', '9606', (93, 101)) 12691 28634180 Although we have not reached statistical significance for enrichment of the mutation OGG1 p.(Arg46Gln) in patients vs controls, this variant should also be considered in future studies. ('p.(Arg46Gln)', 'SUBSTITUTION', 'None', (90, 102)) ('patients', 'Species', '9606', (106, 114)) ('p.(Arg46Gln', 'Var', (90, 101)) ('OGG1', 'Gene', (85, 89)) 12693 28634180 equal number of patients and controls from EpiHealth cohort, and assuming the same frequency of OGG1 p.(Arg46Gln) mutation in SI-NET patient cohort) would be sufficient. ('p.(Arg46Gln', 'Var', (101, 112)) ('SI-NET', 'Disease', 'None', (126, 132)) ('SI-NET', 'Disease', (126, 132)) ('patient', 'Species', '9606', (133, 140)) ('patients', 'Species', '9606', (16, 24)) ('p.(Arg46Gln)', 'SUBSTITUTION', 'None', (101, 113)) ('OGG1', 'Gene', (96, 100)) ('patient', 'Species', '9606', (16, 23)) 12694 28634180 Interestingly, a recent report on a related disease, pancreatic neuroendocrine tumors (PAN-NETs), has described mutations in the MUTYH gene. ('endocrine tumor', 'Phenotype', 'HP:0100568', (69, 84)) ('mutations', 'Var', (112, 121)) ('pancreatic neuroendocrine tumors', 'Disease', (53, 85)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (53, 85)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (64, 84)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (64, 85)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) ('MUTYH', 'Gene', (129, 134)) 12695 28634180 Mutation p.(Gly396Asp) in MUTYH, along with other pathogenic variants in this gene, were reported. ('p.(Gly396Asp', 'Var', (9, 21)) ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (9, 22)) ('MUTYH', 'Gene', (26, 31)) 12702 28634180 Furthermore, previous analyses of gene copy number alterations in SI-NETs showed that chromosome 1p (where MUTYH is located) is rarely affected by tumor-specific deletions, which speaks against a frequent biallelic inactivation of this gene. ('tumor', 'Phenotype', 'HP:0002664', (147, 152)) ('alterations', 'Var', (51, 62)) ('tumor', 'Disease', (147, 152)) ('SI-NETs', 'Disease', 'None', (66, 73)) ('SI-NETs', 'Disease', (66, 73)) ('deletions', 'Var', (162, 171)) ('tumor', 'Disease', 'MESH:D009369', (147, 152)) 12703 28634180 These results might suggest that biallelic inactivation of MUTYH might not be the only mechanism driving the tumor development of SI-NETs, as opposed to what was observed in PAN-NETs. ('biallelic', 'Var', (33, 42)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('SI-NETs', 'Disease', 'None', (130, 137)) ('SI-NETs', 'Disease', (130, 137)) ('tumor', 'Disease', (109, 114)) 12708 28634180 Furthermore, these mutations have also been associated with extra-colonic tumors in subjects bearing two mutations in this gene. ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('mutations', 'Var', (19, 28)) ('extra-colonic tumors', 'Disease', (60, 80)) ('extra-colonic tumors', 'Disease', 'MESH:D015179', (60, 80)) ('associated with', 'Reg', (44, 59)) ('tumors', 'Phenotype', 'HP:0002664', (74, 80)) 12710 28634180 Notably, amino acid substitution p.(Gly396Asp) MUTYH is among the recessive germline mutations described so far in the MUTYH gene and likely causing the autosomal recessive form of adenomatous polyposis. ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (33, 46)) ('causing', 'Reg', (141, 148)) ('MUTYH', 'Gene', (119, 124)) ('p.(Gly396Asp', 'Var', (33, 45)) ('adenomatous polyposis', 'Disease', (181, 202)) ('adenomatous polyposis', 'Phenotype', 'HP:0005227', (181, 202)) ('adenomatous polyposis', 'Disease', 'MESH:D011125', (181, 202)) 12712 28634180 Interestingly, deficient excision of the mutagenic base 8-oxoguanine causes mutations in codon 12 of k-ras gene in mice and codon 12 mutations in human K-RAS have also been described as a somatic tumor-specific change in SI-NETs. ('mutations in', 'Var', (76, 88)) ('tumor', 'Disease', (196, 201)) ('K-RAS', 'Gene', '3845', (152, 157)) ('excision', 'MPA', (25, 33)) ('k-ras', 'Gene', (101, 106)) ('K-RAS', 'Gene', (152, 157)) ('SI-NETs', 'Disease', 'None', (221, 228)) ('human', 'Species', '9606', (146, 151)) ('8-oxoguanine', 'Chemical', 'MESH:C024829', (56, 68)) ('SI-NETs', 'Disease', (221, 228)) ('tumor', 'Disease', 'MESH:D009369', (196, 201)) ('k-ras', 'Gene', '16653', (101, 106)) ('deficient', 'NegReg', (15, 24)) ('mice', 'Species', '10090', (115, 119)) ('tumor', 'Phenotype', 'HP:0002664', (196, 201)) 12713 28634180 Considering the above, we hypothesize that a monoallelic mutation causing amino acid substitution p.(Gly396Asp) in MUTYH is conferring a mild functional impairment, affecting the excision-repair system of 8-oxoguanine (without disturbing the level of MUTYH protein expression), eventually leading to the development of SI-NETs. ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (98, 111)) ('SI-NETs', 'Disease', (319, 326)) ('leading to', 'Reg', (289, 299)) ('affecting', 'Reg', (165, 174)) ('p.(Gly396Asp', 'Var', (98, 110)) ('8-oxoguanine', 'Chemical', 'MESH:C024829', (205, 217)) ('SI-NETs', 'Disease', 'None', (319, 326)) ('excision-repair system of 8-oxoguanine', 'MPA', (179, 217)) 12715 28634180 The presence of one copy of the wild-type allele in patients with MUTYH p.(Gly396Asp) might temper the effect of the altered protein, giving SI-NET patient a mild phenotype, late onset and slow progression of the disease. ('MUTYH', 'Var', (66, 71)) ('temper', 'NegReg', (92, 98)) ('SI-NET', 'Disease', 'None', (141, 147)) ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (72, 85)) ('patients', 'Species', '9606', (52, 60)) ('patient', 'Species', '9606', (52, 59)) ('effect', 'MPA', (103, 109)) ('SI-NET', 'Disease', (141, 147)) ('patient', 'Species', '9606', (148, 155)) ('p.(Gly396Asp', 'Var', (72, 84)) 12716 28634180 We speculate that in the presence of the biallelic MUTYH mutation (as is the case for autosomal recessive form of adenomatous polyposis), one might, for most of patients, never have time to observe the onset of SI-NETs, since other aggressive pathologies (such as colorectal cancer) might lead to the death of the patient. ('colorectal cancer', 'Disease', 'MESH:D015179', (264, 281)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (264, 281)) ('patient', 'Species', '9606', (161, 168)) ('adenomatous polyposis', 'Disease', (114, 135)) ('cancer', 'Phenotype', 'HP:0002664', (275, 281)) ('biallelic MUTYH mutation', 'Var', (41, 65)) ('adenomatous polyposis', 'Phenotype', 'HP:0005227', (114, 135)) ('colorectal cancer', 'Disease', (264, 281)) ('adenomatous polyposis', 'Disease', 'MESH:D011125', (114, 135)) ('SI-NETs', 'Disease', 'None', (211, 218)) ('patients', 'Species', '9606', (161, 169)) ('SI-NETs', 'Disease', (211, 218)) ('patient', 'Species', '9606', (314, 321)) 12717 28634180 In this context, one could mention that heterozygous variant p.(Gly396Asp) in the MutY DNA glycosylase gene has been shown to be associated with an elevated risk of breast cancer also in a study on 930 Sephardi Jewish women of North African origin. ('breast cancer', 'Disease', 'MESH:D001943', (165, 178)) ('associated', 'Reg', (129, 139)) ('cancer', 'Phenotype', 'HP:0002664', (172, 178)) ('breast cancer', 'Disease', (165, 178)) ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (61, 74)) ('breast cancer', 'Phenotype', 'HP:0003002', (165, 178)) ('MutY DNA glycosylase', 'Gene', (82, 102)) ('p.(Gly396Asp', 'Var', (61, 73)) ('women', 'Species', '9606', (218, 223)) 12718 28634180 The p.(Gly396Asp) in MUTYH is, however, unlikely a single and sufficient event to cause the development of SI-NETs. ('SI-NETs', 'Disease', (107, 114)) ('SI-NETs', 'Disease', 'None', (107, 114)) ('p.(Gly396Asp', 'Var', (4, 16)) ('p.(Gly396Asp)', 'SUBSTITUTION', 'None', (4, 17)) 12719 28634180 The observed variants in TERT as well as in SDHA, SDHB and SDHD genes are actually the most common findings in our familial SI-NET patients, but these alleles are not enriched in frequency among all SI-NET patients, when compared to the control population. ('patients', 'Species', '9606', (131, 139)) ('variants', 'Var', (13, 21)) ('TERT', 'Gene', (25, 29)) ('SDHB', 'Gene', (50, 54)) ('SI-NET', 'Disease', 'None', (199, 205)) ('SDHA', 'Gene', '6389', (44, 48)) ('common', 'Reg', (92, 98)) ('SI-NET', 'Disease', (199, 205)) ('TERT', 'Gene', '7015', (25, 29)) ('SDHD', 'Gene', '6392', (59, 63)) ('patients', 'Species', '9606', (206, 214)) ('familial SI-NET', 'Disease', 'MESH:D009394', (115, 130)) ('SI-NET', 'Disease', 'None', (124, 130)) ('SDHA', 'Gene', (44, 48)) ('SDHD', 'Gene', (59, 63)) ('SI-NET', 'Disease', (124, 130)) ('familial SI-NET', 'Disease', (115, 130)) ('SDHB', 'Gene', '6390', (50, 54)) 12720 28634180 Furthermore, mutations in the SDHx genes have previously been implicated in cancer, and particularly, in forms related to SI-NETs, such as pheochromocytoma and paraganglioma. ('SI-NETs', 'Disease', 'None', (122, 129)) ('SI-NETs', 'Disease', (122, 129)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (139, 173)) ('paraganglioma', 'Phenotype', 'HP:0002668', (160, 173)) ('SDHx', 'Gene', (30, 34)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (139, 155)) ('cancer', 'Phenotype', 'HP:0002664', (76, 82)) ('cancer', 'Disease', (76, 82)) ('mutations', 'Var', (13, 22)) ('implicated', 'Reg', (62, 72)) ('cancer', 'Disease', 'MESH:D009369', (76, 82)) 12721 28634180 Somatic, tumor-specific SDHD mutations have also been shown in SI-NETs. ('tumor', 'Disease', 'MESH:D009369', (9, 14)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('mutations', 'Var', (29, 38)) ('SI-NETs', 'Disease', 'None', (63, 70)) ('SI-NETs', 'Disease', (63, 70)) ('tumor', 'Disease', (9, 14)) ('SDHD', 'Gene', (24, 28)) ('SDHD', 'Gene', '6392', (24, 28)) 12724 28634180 We may only speculate that the variants we characterized could contribute to the development of tumors in some patients or in some families. ('variants', 'Var', (31, 39)) ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('tumors', 'Disease', (96, 102)) ('tumors', 'Phenotype', 'HP:0002664', (96, 102)) ('tumors', 'Disease', 'MESH:D009369', (96, 102)) ('contribute', 'Reg', (63, 73)) ('patients', 'Species', '9606', (111, 119)) 12728 28634180 The only previously characterized mutation (4-bp deletion in the IPMK gene) predisposing to familial SI-NETs is apparently a private mutation, specific for one large family. ('familial SI-NETs', 'Disease', 'MESH:D009394', (92, 108)) ('IPMK', 'Gene', (65, 69)) ('IPMK', 'Gene', '253430', (65, 69)) ('familial SI-NETs', 'Disease', (92, 108)) ('4-bp deletion', 'Var', (44, 57)) 12730 28634180 Moreover, in the large family reported by Sei and coworkers, only two individuals (out of 14 in the third generation with the IPMK gene mutation, Fig. ('IPMK', 'Gene', (126, 130)) ('mutation', 'Var', (136, 144)) ('IPMK', 'Gene', '253430', (126, 130)) 12733 28634180 about 43% of clinically asymptomatic subjects (with the mutation) in this family had occult tumors, which is a very high number. ('occult tumors', 'Disease', (85, 98)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('tumors', 'Phenotype', 'HP:0002664', (92, 98)) ('mutation', 'Var', (56, 64)) ('occult tumors', 'Disease', 'MESH:D009382', (85, 98)) 12734 28634180 Thus, it appears that expressivity of the IPMK mutation in causing SI-NETs is variable and there are likely additional mutation carriers without clinical symptoms of the disease. ('mutation', 'Var', (47, 55)) ('IPMK', 'Gene', '253430', (42, 46)) ('IPMK', 'Gene', (42, 46)) ('SI-NETs', 'Disease', 'None', (67, 74)) ('SI-NETs', 'Disease', (67, 74)) 12739 28634180 We have identified monoallelic germline mutations in MUTYH, involved in DNA repair following oxidative stress, which may be a candidate gene for predisposition to SI-NET. ('SI-NET', 'Disease', 'None', (163, 169)) ('germline mutations', 'Var', (31, 49)) ('oxidative stress', 'Phenotype', 'HP:0025464', (93, 109)) ('MUTYH', 'Gene', (53, 58)) ('SI-NET', 'Disease', (163, 169)) 12765 28761619 Hypothyroidism was found in 33% of patients with ectopic thyroid and it was higher in patients without normal placed thyroid gland. ('Hypothyroidism', 'Disease', 'MESH:D007037', (0, 14)) ('ectopic thyroid', 'Phenotype', 'HP:0100028', (49, 64)) ('ectopic', 'Var', (49, 56)) ('Hypothyroidism', 'Phenotype', 'HP:0000821', (0, 14)) ('patients', 'Species', '9606', (35, 43)) ('Hypothyroidism', 'Disease', (0, 14)) ('patients', 'Species', '9606', (86, 94)) 12824 28702269 Genetic testing of the RET, VHL, SDHB, and SDHD gene mutations is advocated in patients younger than fifty years. ('RET', 'Gene', (23, 26)) ('SDHB', 'Gene', '6390', (33, 37)) ('SDHD', 'Gene', '6392', (43, 47)) ('SDHB', 'Gene', (33, 37)) ('mutations', 'Var', (53, 62)) ('SDHD', 'Gene', (43, 47)) ('patients', 'Species', '9606', (79, 87)) ('RET', 'Gene', '5979', (23, 26)) ('VHL', 'Gene', (28, 31)) ('VHL', 'Gene', '7428', (28, 31)) 12842 27042633 Magnetic resonance showed destruction and hypersignal at T10 in the T1 sequence, and hypersignal in the T2 sequence, with significant spinal cord compression, causing edema (Figure 1, Figure 2, Figure 3, Figure 4). ('edema', 'Disease', (167, 172)) ('causing', 'Reg', (159, 166)) ('spinal cord compression', 'Phenotype', 'HP:0002176', (134, 157)) ('hypersignal', 'Var', (42, 53)) ('edema', 'Disease', 'MESH:D004487', (167, 172)) ('edema', 'Phenotype', 'HP:0000969', (167, 172)) ('hypersignal', 'Var', (85, 96)) 12965 22708103 Second, it has been suggested that dopamine can lower blood pressure by itself. ('lower blood pressure', 'Phenotype', 'HP:0002615', (48, 68)) ('dopamine', 'Chemical', 'MESH:D004298', (35, 43)) ('blood pressure', 'MPA', (54, 68)) ('lower', 'NegReg', (48, 53)) ('dopamine', 'Var', (35, 43)) 13035 19808327 Elimination of norepinephrine secretion in PC12-KO cells induced neither cardiac dilation (3.9+-1.8% increase vs. control) nor changes in (1.9+-0.4% reduction) fractional shortening compared to controls. ('PC12', 'CellLine', 'CVCL:0481', (43, 47)) ('norepinephrine', 'Chemical', 'MESH:D009638', (15, 29)) ('cardiac dilation', 'Disease', (73, 89)) ('PC12-KO', 'Var', (43, 50)) ('fractional', 'MPA', (160, 170)) ('increase', 'PosReg', (101, 109)) ('cardiac dilation', 'Disease', 'MESH:D002311', (73, 89)) ('norepinephrine secretion', 'MPA', (15, 39)) 13040 19808327 Excessive adrenergic stimulation can induce and exacerbate cardiovascular disease. ('exacerbate', 'PosReg', (48, 58)) ('Excessive', 'Var', (0, 9)) ('cardiovascular disease', 'Disease', (59, 81)) ('cardiovascular disease', 'Phenotype', 'HP:0001626', (59, 81)) ('cardiovascular disease', 'Disease', 'MESH:D002318', (59, 81)) ('induce', 'Reg', (37, 43)) 13053 19808327 Rat pheochromocytoma cells (PC12, ATCC, VA) were maintained in F12K media (ATCC) with 10% horse serum (Hyclone, Logan, UT), 5% FBS (Hyclone) and 100 units/ml penicillin/streptomyocin (Invitrogen, CA). ('Rat', 'Species', '10116', (0, 3)) ('F12K', 'SUBSTITUTION', 'None', (63, 67)) ('F12K', 'Var', (63, 67)) ('streptomyocin', 'Chemical', '-', (169, 182)) ('FBS', 'Disease', 'MESH:D005198', (127, 130)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (4, 20)) ('horse', 'Species', '9796', (90, 95)) ('penicillin', 'Chemical', 'MESH:D010406', (158, 168)) ('PC12', 'CellLine', 'CVCL:0481', (28, 32)) ('pheochromocytoma', 'Disease', (4, 20)) ('FBS', 'Disease', (127, 130)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (4, 20)) 13099 19808327 Cardiac dilation was more pronounced in Pheo rats and mice (p<0.01 vs. control, p<0.01 vs. NE) compared to NE rats and mice (Figure 3A). ('Cardiac dilation', 'Disease', (0, 16)) ('Cardiac dilation', 'Disease', 'MESH:D002311', (0, 16)) ('mice', 'Species', '10090', (119, 123)) ('rats', 'Species', '10116', (45, 49)) ('Pheo', 'Chemical', '-', (40, 44)) ('Pheo', 'Var', (40, 44)) ('rats', 'Species', '10116', (110, 114)) ('mice', 'Species', '10090', (54, 58)) ('pronounced', 'PosReg', (26, 36)) 13100 19808327 The hearts of Pheo rats were 47% larger than controls (p<0.01) and NE rats (p<0.01), the latter statistically indistinguishable from controls (Table 1). ('Pheo', 'Var', (14, 18)) ('hearts', 'MPA', (4, 10)) ('Pheo', 'Chemical', '-', (14, 18)) ('larger', 'PosReg', (33, 39)) ('rats', 'Species', '10116', (70, 74)) ('rats', 'Species', '10116', (19, 23)) 13102 19808327 Furthermore Pheo mice experienced a greater loss of cardiac function, evident in the 10.8+-1.9% (p<0.01 vs. control, p<0.05 vs. NE) decrease in fractional shortening (FS) compared to NE mice that experienced a 6.3+-2.9% (p<0.01) decrease in FS. ('loss of cardiac function', 'Phenotype', 'HP:0001635', (44, 68)) ('fractional shortening', 'MPA', (144, 165)) ('mice', 'Species', '10090', (17, 21)) ('Pheo', 'Var', (12, 16)) ('loss', 'NegReg', (44, 48)) ('Pheo', 'Chemical', '-', (12, 16)) ('mice', 'Species', '10090', (186, 190)) ('cardiac function', 'MPA', (52, 68)) ('decrease', 'NegReg', (132, 140)) 13104 19808327 Of note, Pheo-KO mice did exhibit slight increase in cardiac dilation but no discernible loss of FS compared to controls (Table 2). ('mice', 'Species', '10090', (17, 21)) ('Pheo', 'Chemical', '-', (9, 13)) ('cardiac dilation', 'Disease', (53, 69)) ('Pheo-KO', 'Var', (9, 16)) ('increase', 'PosReg', (41, 49)) ('cardiac dilation', 'Disease', 'MESH:D002311', (53, 69)) 13105 19808327 Left ventricular end-systolic volume scaled linearly with norepinephrine levels (R2=0.916, p<0.0001) in control, pheo and pheo-KO mice but not in NE pump animals whose catecholamine levels were all at the upper limit and without correlative effect. ('Left ventricular end-systolic volume', 'MPA', (0, 36)) ('mice', 'Species', '10090', (130, 134)) ('catecholamine', 'Chemical', 'MESH:D002395', (168, 181)) ('pheo', 'Chemical', '-', (113, 117)) ('norepinephrine', 'Chemical', 'MESH:D009638', (58, 72)) ('pheo', 'Chemical', '-', (122, 126)) ('pheo-KO', 'Var', (122, 129)) ('norepinephrine levels', 'MPA', (58, 79)) 13111 19808327 This mechanism is further validated by the 96% and 36% increase in stroke volume for Pheo rats over controls and NE rats, respectively. ('stroke', 'Disease', (67, 73)) ('increase', 'PosReg', (55, 63)) ('rats', 'Species', '10116', (116, 120)) ('stroke', 'Disease', 'MESH:D020521', (67, 73)) ('rats', 'Species', '10116', (90, 94)) ('Pheo', 'Var', (85, 89)) ('stroke', 'Phenotype', 'HP:0001297', (67, 73)) ('Pheo', 'Chemical', '-', (85, 89)) 13114 19808327 Pheo-implants raised MMP3 (p<0.01), collagen-1 (p<0.05), CCL2 (p < 0.01) and reduced TIMP3 (p <0.01) mRNA levels compared to NE rats (Figure 6). ('CCL2', 'Gene', (57, 61)) ('MMP3', 'Gene', '171045', (21, 25)) ('collagen-1', 'MPA', (36, 46)) ('Pheo-implants', 'Var', (0, 13)) ('TIMP3', 'Gene', '25358', (85, 90)) ('MMP3', 'Gene', (21, 25)) ('rats', 'Species', '10116', (128, 132)) ('reduced', 'NegReg', (77, 84)) ('TIMP3', 'Gene', (85, 90)) ('Pheo', 'Chemical', '-', (0, 4)) ('CCL2', 'Gene', '24770', (57, 61)) ('raised', 'PosReg', (14, 20)) 13133 19808327 The altered balance of the cytoskeletal proteins, MMP3, TIMP3, and collagen, creates maladaptive myocardial remodeling that mediates the transition from compensated to decompensated heart failure. ('heart failure', 'Phenotype', 'HP:0001635', (182, 195)) ('maladaptive myocardial remodeling', 'Disease', (85, 118)) ('heart failure', 'Disease', (182, 195)) ('altered', 'Var', (4, 11)) ('MMP3', 'Gene', '171045', (50, 54)) ('maladaptive myocardial remodeling', 'Disease', 'MESH:D020257', (85, 118)) ('TIMP3', 'Gene', '25358', (56, 61)) ('heart failure', 'Disease', 'MESH:D006333', (182, 195)) ('TIMP3', 'Gene', (56, 61)) ('MMP3', 'Gene', (50, 54)) 13168 33634028 RING1 overexpression leads to cellular transformation via enhancing the expression of the proto-oncogenes, c-jun, and c-fos. ('c-fos', 'Gene', (118, 123)) ('overexpression', 'Var', (6, 20)) ('RING1', 'Gene', (0, 5)) ('cellular transformation', 'CPA', (30, 53)) ('expression', 'MPA', (72, 82)) ('enhancing', 'PosReg', (58, 67)) ('c-jun', 'Gene', '3725', (107, 112)) ('c-jun', 'Gene', (107, 112)) ('c-fos', 'Gene', '2353', (118, 123)) ('RING1', 'Gene', '6015', (0, 5)) 13173 33634028 In this study, the dysregulation of RING1 was observed in multiple types of cancers and was associated with poor outcomes. ('dysregulation', 'Var', (19, 32)) ('cancers', 'Disease', 'MESH:D009369', (76, 83)) ('cancers', 'Phenotype', 'HP:0002664', (76, 83)) ('observed', 'Reg', (46, 54)) ('cancers', 'Disease', (76, 83)) ('RING1', 'Gene', (36, 41)) ('cancer', 'Phenotype', 'HP:0002664', (76, 82)) ('RING1', 'Gene', '6015', (36, 41)) ('associated', 'Reg', (92, 102)) 13181 33634028 In this study, Kaplan-Meier plotter in breast cancer or Pan-cancer was used to detect the OS, RFS, and DMFS of RING1 to explore its prognostic value in human cancers. ('RFS', 'Gene', '65211', (94, 97)) ('breast cancer', 'Phenotype', 'HP:0003002', (39, 52)) ('RING1', 'Gene', '6015', (111, 116)) ('DMFS', 'Var', (103, 107)) ('Pan-cancer', 'Disease', (56, 66)) ('RFS', 'Gene', (94, 97)) ('cancers', 'Phenotype', 'HP:0002664', (158, 165)) ('cancers', 'Disease', (158, 165)) ('human', 'Species', '9606', (152, 157)) ('cancers', 'Disease', 'MESH:D009369', (158, 165)) ('cancer', 'Phenotype', 'HP:0002664', (46, 52)) ('breast cancer', 'Disease', 'MESH:D001943', (39, 52)) ('Pan-cancer', 'Disease', 'MESH:D009369', (56, 66)) ('cancer', 'Phenotype', 'HP:0002664', (60, 66)) ('cancer', 'Phenotype', 'HP:0002664', (158, 164)) ('breast cancer', 'Disease', (39, 52)) ('RING1', 'Gene', (111, 116)) 13199 33634028 The Kaplan-Meier curve and log-rank test results revealed that patients with high RING1 mRNA expression level have higher OS (overall survival) compared to the low expression group ( Figure 1C ). ('high', 'Var', (77, 81)) ('RING1', 'Gene', (82, 87)) ('patients', 'Species', '9606', (63, 71)) ('RING1', 'Gene', '6015', (82, 87)) ('higher', 'PosReg', (115, 121)) 13218 33634028 The univariate analysis showed that ER (P = 0.008), P53 (P = 0.013), and RING1 (P = 0.015) were protective factors in breast cancer prognosis, while Her-2 was a risk factor. ('RING1', 'Gene', (73, 78)) ('Her-2', 'Gene', '2064', (149, 154)) ('ER', 'Gene', '2069', (36, 38)) ('cancer', 'Phenotype', 'HP:0002664', (125, 131)) ('Her-2', 'Gene', (149, 154)) ('P53', 'Var', (52, 55)) ('RING1', 'Gene', '6015', (73, 78)) ('breast cancer', 'Disease', 'MESH:D001943', (118, 131)) ('breast cancer', 'Disease', (118, 131)) ('breast cancer', 'Phenotype', 'HP:0003002', (118, 131)) 13240 33634028 Cancer is considered a genetic disease, in which abnormal gene expression causes tumor cells to lose normal characteristics. ('genetic disease', 'Disease', 'MESH:D030342', (23, 38)) ('genetic disease', 'Disease', (23, 38)) ('abnormal gene expression', 'Var', (49, 73)) ('Cancer', 'Phenotype', 'HP:0002664', (0, 6)) ('Cancer', 'Disease', (0, 6)) ('tumor', 'Disease', 'MESH:D009369', (81, 86)) ('Cancer', 'Disease', 'MESH:D009369', (0, 6)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('lose', 'NegReg', (96, 100)) ('tumor', 'Disease', (81, 86)) 13251 33634028 For cancer, recent studies have shown that the abnormal gene expression of RING1 leads to the development of a variety of cancers. ('leads to', 'Reg', (81, 89)) ('RING1', 'Gene', (75, 80)) ('abnormal gene expression', 'Var', (47, 71)) ('cancer', 'Phenotype', 'HP:0002664', (4, 10)) ('cancer', 'Disease', (122, 128)) ('cancer', 'Disease', 'MESH:D009369', (122, 128)) ('cancers', 'Disease', 'MESH:D009369', (122, 129)) ('RING1', 'Gene', '6015', (75, 80)) ('cancers', 'Phenotype', 'HP:0002664', (122, 129)) ('cancer', 'Disease', 'MESH:D009369', (4, 10)) ('cancer', 'Phenotype', 'HP:0002664', (122, 128)) ('cancers', 'Disease', (122, 129)) ('cancer', 'Disease', (4, 10)) 13268 33634028 found that RING1 overexpression promotes colony formation, cell multiplication and invasion of hepatic progenitor cells (HPCs), and that it also drives their malignant transformation by activating the Wnt/beta-catenin signal pathway. ('RING1', 'Gene', '6015', (11, 16)) ('overexpression', 'Var', (17, 31)) ('cell multiplication', 'CPA', (59, 78)) ('promotes', 'PosReg', (32, 40)) ('beta-catenin', 'Gene', (205, 217)) ('beta-catenin', 'Gene', '1499', (205, 217)) ('invasion', 'CPA', (83, 91)) ('drives', 'PosReg', (145, 151)) ('colony formation', 'CPA', (41, 57)) ('activating', 'PosReg', (186, 196)) ('RING1', 'Gene', (11, 16)) ('malignant transformation', 'CPA', (158, 182)) 13277 33644666 Cardiac paraganglioma with sulfur subunit B gene mutation: a case report Pheochromocytoma and paraganglioma is a rare disease with a prevalence of 0.2-0.6% in hypertensive patients from outpatient. ('hypertensive', 'Disease', 'MESH:D006973', (159, 171)) ('Cardiac paraganglioma', 'Disease', (0, 21)) ('hypertensive', 'Disease', (159, 171)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (73, 89)) ('mutation', 'Var', (49, 57)) ('Pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (73, 107)) ('paraganglioma', 'Phenotype', 'HP:0002668', (94, 107)) ('paraganglioma', 'Phenotype', 'HP:0002668', (8, 21)) ('patients', 'Species', '9606', (172, 180)) ('Cardiac paraganglioma', 'Disease', 'MESH:D006331', (0, 21)) ('outpatient', 'Species', '9606', (186, 196)) 13282 33644666 Subsequent genetic test suggested succinate dehydrogenase complex iron sulfur subunit B (SDHB) gene mutation. ('mutation', 'Var', (100, 108)) ('SDHB', 'Gene', '6390', (89, 93)) ('SDHB', 'Gene', (89, 93)) 13285 33644666 Given a potential risk of developing malignancies, close follow-up is significant in patients with SDHB gene mutations. ('malignancies', 'Disease', (37, 49)) ('SDHB', 'Gene', '6390', (99, 103)) ('patients', 'Species', '9606', (85, 93)) ('SDHB', 'Gene', (99, 103)) ('mutations', 'Var', (109, 118)) ('malignancies', 'Disease', 'MESH:D009369', (37, 49)) 13288 33644666 Patients with sulfur subunit B gene mutations are at high risk of developing malignancies and follow-up is required to monitoring relapse. ('sulfur subunit B', 'Gene', (14, 30)) ('malignancies', 'Disease', (77, 89)) ('mutations', 'Var', (36, 45)) ('Patients', 'Species', '9606', (0, 8)) ('malignancies', 'Disease', 'MESH:D009369', (77, 89)) 13292 33644666 Several genetic mutations such as succinate dehydrogenase complex iron sulfur subunit B (SDHB) mutations also occur in metastatic PPGL patients with increased risk for malignancy. ('malignancy', 'Disease', 'MESH:D009369', (168, 178)) ('patients', 'Species', '9606', (135, 143)) ('malignancy', 'Disease', (168, 178)) ('PPGL', 'Chemical', '-', (130, 134)) ('occur', 'Reg', (110, 115)) ('SDHB', 'Gene', '6390', (89, 93)) ('metastatic PPGL', 'Disease', (119, 134)) ('mutations', 'Var', (95, 104)) ('SDHB', 'Gene', (89, 93)) 13293 33644666 We herein reported a unique case of non-typical paraganglioma in heart identified with SDHB mutation. ('mutation', 'Var', (92, 100)) ('paraganglioma', 'Phenotype', 'HP:0002668', (48, 61)) ('paraganglioma', 'Disease', (48, 61)) ('paraganglioma in heart', 'Phenotype', 'HP:0100544', (48, 70)) ('SDHB', 'Gene', '6390', (87, 91)) ('SDHB', 'Gene', (87, 91)) ('paraganglioma', 'Disease', 'MESH:D010235', (48, 61)) 13312 33644666 Immunohistochemical results presented CgA (+), S100 (+), NSE (+), CK (-), EMA (-), CD34 (-), calretinin (+), and CD68 (-). ('NSE', 'Gene', '2026', (57, 60)) ('CD68', 'Var', (113, 117)) ('S100', 'Gene', (47, 51)) ('calretinin', 'Gene', (93, 103)) ('S100', 'Gene', '6271', (47, 51)) ('NSE', 'Gene', (57, 60)) ('CgA', 'Gene', '1113', (38, 41)) ('CD34', 'Var', (83, 87)) ('CgA', 'Gene', (38, 41)) ('calretinin', 'Gene', '794', (93, 103)) 13313 33644666 The genetic test showed SDHB gene mutation, nucleotide mutation c.725G>A, and amino acid mutation p. Arg242His. ('c.725G>A', 'Var', (64, 72)) ('Arg242His', 'Var', (101, 110)) ('c.725G>A', 'Mutation', 'rs74315368', (64, 72)) ('SDHB', 'Gene', '6390', (24, 28)) ('SDHB', 'Gene', (24, 28)) ('Arg242His', 'SUBSTITUTION', 'None', (101, 110)) 13319 33644666 In addition, SDHB gene mutation was identified. ('SDHB', 'Gene', '6390', (13, 17)) ('SDHB', 'Gene', (13, 17)) ('mutation', 'Var', (23, 31)) 13320 33644666 Previous studies have established 14 different genes susceptible in PPGLs, with SDHB mutations mainly in extra-adrenal tumours. ('tumour', 'Phenotype', 'HP:0002664', (119, 125)) ('tumours', 'Phenotype', 'HP:0002664', (119, 126)) ('SDHB', 'Gene', (80, 84)) ('PPGLs', 'Chemical', '-', (68, 73)) ('mutations', 'Var', (85, 94)) ('adrenal tumours', 'Disease', (111, 126)) ('adrenal tumours', 'Disease', 'MESH:D000310', (111, 126)) ('SDHB', 'Gene', '6390', (80, 84)) 13321 33644666 Of note, 30% of patients with metastatic PPGL appear with pathogenic SDHB mutations. ('SDHB', 'Gene', '6390', (69, 73)) ('SDHB', 'Gene', (69, 73)) ('patients', 'Species', '9606', (16, 24)) ('mutations', 'Var', (74, 83)) ('metastatic PPGL', 'Disease', (30, 45)) ('PPGL', 'Chemical', '-', (41, 45)) ('pathogenic', 'Reg', (58, 68)) 13323 33644666 Remarkably, Pasini and Stratakis documented a prevalence of 36% of SDHB mutations in malignant PPGLs. ('SDHB', 'Gene', (67, 71)) ('mutations', 'Var', (72, 81)) ('PPGLs', 'Chemical', '-', (95, 100)) ('SDHB', 'Gene', '6390', (67, 71)) 13324 33644666 A high risk of developing malignancy is thus implied in PPGL patients with SDHB gene mutations. ('patients', 'Species', '9606', (61, 69)) ('SDHB', 'Gene', '6390', (75, 79)) ('mutations', 'Var', (85, 94)) ('SDHB', 'Gene', (75, 79)) ('malignancy', 'Disease', (26, 36)) ('malignancy', 'Disease', 'MESH:D009369', (26, 36)) ('PPGL', 'Chemical', '-', (56, 60)) 13325 33644666 Indeed, patients with metastatic disease should be tested for potential SDHB gene mutations. ('metastatic disease', 'Disease', (22, 40)) ('SDHB', 'Gene', (72, 76)) ('SDHB', 'Gene', '6390', (72, 76)) ('mutations', 'Var', (82, 91)) ('tested', 'Reg', (51, 57)) ('patients', 'Species', '9606', (8, 16)) 13409 32793847 These cases illustrate that if appropriate thyroid blockade is not performed, ETT concentrating radioiodine from mIBG can lead to falsely positive mIBG scans and unnecessary surgical procedures. ('radioiodine', 'Chemical', 'MESH:C000614965', (96, 107)) ('mIBG', 'MPA', (147, 151)) ('scans', 'MPA', (152, 157)) ('lead to', 'Reg', (122, 129)) ('mIBG', 'Chemical', '-', (113, 117)) ('ETT', 'Var', (78, 81)) ('mIBG', 'Chemical', '-', (147, 151)) 13485 32793847 Friedman et al pointed out that in older patients there may be less concern for the long-term risk of thyroid neoplasia from the minimal amount of radiation exposure from 123I-mIBG. ('thyroid neoplasia', 'Phenotype', 'HP:0100031', (102, 119)) ('thyroid neoplasia', 'Disease', 'MESH:D009369', (102, 119)) ('123I-mIBG', 'Chemical', '-', (171, 180)) ('123I-mIBG', 'Var', (171, 180)) ('thyroid neoplasia', 'Disease', (102, 119)) ('neoplasia', 'Phenotype', 'HP:0002664', (110, 119)) ('patients', 'Species', '9606', (41, 49)) 13522 32609829 To explore this hypothesis we applied a mass spectrometry-based method to measure 15 adrenal steroids in plasma of a cohort of patients with PPGLs compared with additional patients with primary hypertension. ('hypertension', 'Disease', (194, 206)) ('hypertension', 'Phenotype', 'HP:0000822', (194, 206)) ('steroids', 'Chemical', 'MESH:D013256', (93, 101)) ('patients', 'Species', '9606', (127, 135)) ('hypertension', 'Disease', 'MESH:D006973', (194, 206)) ('PPGLs', 'Chemical', '-', (141, 146)) ('patients', 'Species', '9606', (172, 180)) ('PPGLs', 'Var', (141, 146)) 13532 32609829 Among the patients with PPGLs, additional plasma samples were available from 100 patients at an interval between 12 and 36 months after surgical removal of tumors (88 with pheochromocytoma and 12 with paraganglioma). ('paraganglioma', 'Disease', 'MESH:D010235', (201, 214)) ('PPGLs', 'Var', (24, 29)) ('patients', 'Species', '9606', (81, 89)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('PPGLs', 'Chemical', '-', (24, 29)) ('paraganglioma', 'Phenotype', 'HP:0002668', (201, 214)) ('tumors', 'Disease', 'MESH:D009369', (156, 162)) ('tumors', 'Phenotype', 'HP:0002664', (156, 162)) ('patients', 'Species', '9606', (10, 18)) ('paraganglioma', 'Disease', (201, 214)) ('pheochromocytoma', 'Disease', (172, 188)) ('tumors', 'Disease', (156, 162)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (172, 188)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (172, 188)) 13589 32609829 Cortisol has a particularly slow plasma clearance, in part due to the high proportion of the steroid that is bound to transcortin; thus, it is possible that differences in binding to transcortin could also decrease the clearance of glucocorticoids and through this action increase plasma concentrations. ('Cortisol', 'Chemical', 'MESH:D006854', (0, 8)) ('increase', 'PosReg', (272, 280)) ('plasma concentrations', 'MPA', (281, 302)) ('differences', 'Var', (157, 168)) ('binding', 'Interaction', (172, 179)) ('transcortin', 'Gene', (118, 129)) ('decrease', 'NegReg', (206, 214)) ('transcortin', 'Gene', (183, 194)) ('steroid', 'Chemical', 'MESH:D013256', (93, 100)) ('increase plasma concentrations', 'Phenotype', 'HP:0020170', (272, 302)) ('transcortin', 'Gene', '866', (118, 129)) ('clearance of glucocorticoids', 'MPA', (219, 247)) ('transcortin', 'Gene', '866', (183, 194)) 13669 30952024 In the United States 90% to 95% of bladder cancers are pure UC, and the remaining 5%-10% consist of UC with aberrant differentiation or non-urothelial carcinoma. ('bladder cancers', 'Phenotype', 'HP:0009725', (35, 50)) ('cancers', 'Phenotype', 'HP:0002664', (43, 50)) ('non-urothelial carcinoma', 'Disease', 'MESH:D002289', (136, 160)) ('aberrant', 'Var', (108, 116)) ('bladder cancers', 'Disease', 'MESH:D001749', (35, 50)) ('bladder cancer', 'Phenotype', 'HP:0009725', (35, 49)) ('cancer', 'Phenotype', 'HP:0002664', (43, 49)) ('non-urothelial carcinoma', 'Disease', (136, 160)) ('bladder cancers', 'Disease', (35, 50)) ('carcinoma', 'Phenotype', 'HP:0030731', (151, 160)) 13694 29942926 Ectopic adrenocorticotropic hormone (ACTH) production is a rare cause of Cushing syndrome. ('adrenocorticotropic hormone', 'Gene', (8, 35)) ('Cushing syndrome', 'Disease', 'MESH:D003480', (73, 89)) ('cause', 'Reg', (64, 69)) ('ACTH', 'Gene', (37, 41)) ('ACTH', 'Gene', '5443', (37, 41)) ('Ectopic', 'Var', (0, 7)) ('Cushing syndrome', 'Phenotype', 'HP:0003118', (73, 89)) ('Cushing syndrome', 'Disease', (73, 89)) ('adrenocorticotropic hormone', 'Gene', '5443', (8, 35)) 13741 29942926 The majority (80%) of cases are due to oversecretion of ACTH, and the other 20% of cases originate from the adrenal glands as adenomas or, rarely, carcinomas. ('carcinomas', 'Disease', 'MESH:D002277', (147, 157)) ('carcinoma', 'Phenotype', 'HP:0030731', (147, 156)) ('originate', 'Reg', (89, 98)) ('carcinomas', 'Disease', (147, 157)) ('ACTH', 'Gene', '5443', (56, 60)) ('oversecretion', 'Var', (39, 52)) ('adenomas', 'Disease', 'MESH:D000236', (126, 134)) ('carcinomas', 'Phenotype', 'HP:0030731', (147, 157)) ('adenomas', 'Disease', (126, 134)) ('ACTH', 'Gene', (56, 60)) ('due to', 'Reg', (32, 38)) 13787 29942926 Three were negative, including our own; one had a missense mutation in VHL that is nonpathogenic; and in the fifth case the patient refused testing. ('VHL', 'Gene', (71, 74)) ('missense mutation', 'Var', (50, 67)) ('patient', 'Species', '9606', (124, 131)) ('VHL', 'Gene', '7428', (71, 74)) 13846 25136447 The first two are associated with germline mutations in tumor suppressor genes. ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('tumor', 'Disease', (56, 61)) ('germline mutations', 'Var', (34, 52)) ('associated', 'Reg', (18, 28)) ('tumor', 'Disease', 'MESH:D009369', (56, 61)) 13847 25136447 VHL mutations, however, result in a pseudo-hypoxic state through decreased degradation of HIF (cluster 1 transcriptome) and PGLs are attributed to mutations in succinate dehydrogenase (SDH) subunit genes SDHB, SDHC, and SDHD that comprise portions of mitochondrial complex II. ('mutations', 'Var', (147, 156)) ('SDH', 'Gene', '6390', (185, 188)) ('decreased', 'NegReg', (65, 74)) ('VHL', 'Disease', 'MESH:D006623', (0, 3)) ('SDH', 'Gene', (210, 213)) ('SDHB', 'Gene', '6390', (204, 208)) ('SDHC', 'Gene', (210, 214)) ('SDH', 'Gene', (185, 188)) ('SDHD', 'Gene', '6392', (220, 224)) ('degradation', 'MPA', (75, 86)) ('PGLs', 'Phenotype', 'HP:0002668', (124, 128)) ('SDH', 'Gene', '6390', (220, 223)) ('succinate dehydrogenase', 'Gene', (160, 183)) ('SDHB', 'Gene', (204, 208)) ('VHL', 'Disease', (0, 3)) ('pseudo-hypoxic state', 'MPA', (36, 56)) ('SDH', 'Gene', '6390', (204, 207)) ('mutations', 'Var', (4, 13)) ('SDHD', 'Gene', (220, 224)) ('SDH', 'Gene', '6390', (210, 213)) ('SDH', 'Gene', (220, 223)) ('SDHC', 'Gene', '6391', (210, 214)) ('succinate dehydrogenase', 'Gene', '6390', (160, 183)) ('SDH', 'Gene', (204, 207)) 13850 25136447 It is caused by mutation or deletion of imprinted genes within the chromosome 11p15.5 region, which harbors the insulin-like growth factor 2 (IGF2) gene. ('insulin-like growth factor 2', 'Gene', (112, 140)) ('IGF2', 'Gene', '3481', (142, 146)) ('mutation', 'Var', (16, 24)) ('insulin-like growth factor 2', 'Gene', '3481', (112, 140)) ('IGF2', 'Gene', (142, 146)) ('caused by', 'Reg', (6, 15)) ('deletion', 'Var', (28, 36)) 13875 25136447 Multiplex ligation-dependent probe analysis revealed no epigenetic alterations in 11p15.5, which included investigation for hypomethylation at KCNQ1OT1 and hypermethylation at ICR1, and also no 11p15.5 uniparental disomy (UPD) was found. ('ICR1', 'Gene', (176, 180)) ('KCNQ1OT1', 'Gene', '10984', (143, 151)) ('ICR1', 'Gene', '3388', (176, 180)) ('uniparental disomy', 'Disease', (202, 220)) ('hypermethylation', 'Var', (156, 172)) ('KCNQ1OT1', 'Gene', (143, 151)) ('uniparental disomy', 'Disease', 'MESH:D024182', (202, 220)) ('hypomethylation', 'MPA', (124, 139)) ('epigenetic', 'MPA', (56, 66)) ('11p15.5', 'Gene', (82, 89)) 13894 25136447 Screening for somatic and germline mutations in the VHL and RET genes in the adrenal tumor was also negative and methylation patterns for LIT1 (KCNQ1OT1) and H19 genes associated with BWS were normal. ('H19', 'Gene', (158, 161)) ('adrenal tumor', 'Disease', 'MESH:D000310', (77, 90)) ('adrenal tumor', 'Disease', (77, 90)) ('KCNQ1OT1', 'Gene', '10984', (144, 152)) ('BWS', 'Disease', (184, 187)) ('RET', 'Gene', (60, 63)) ('negative', 'NegReg', (100, 108)) ('BWS', 'Disease', 'MESH:D001506', (184, 187)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (77, 90)) ('LIT1', 'Gene', '10984', (138, 142)) ('LIT1', 'Gene', (138, 142)) ('RET', 'Gene', '5979', (60, 63)) ('VHL', 'Disease', 'MESH:D006623', (52, 55)) ('KCNQ1OT1', 'Gene', (144, 152)) ('VHL', 'Disease', (52, 55)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('H19', 'Gene', '283120', (158, 161)) ('mutations', 'Var', (35, 44)) 13896 25136447 The fifth case involved early-onset bilateral pediatric pheochromocytomas caused by mosaic chromosome 11p15 paternal UPD, which was recently reported. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (56, 73)) ('caused by', 'Reg', (74, 83)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (56, 72)) ('mosaic chromosome 11p15 paternal', 'Var', (84, 116)) ('bilateral pediatric pheochromocytomas', 'Disease', (36, 73)) ('bilateral pediatric pheochromocytomas', 'Disease', 'MESH:D010673', (36, 73)) 13906 25136447 CDKN1C mutations appear to be particularly associated with umbilical abnormalities, but not with increased predisposition to Wilms' tumor. ('umbilical abnormalities', 'Phenotype', 'HP:0001551', (59, 82)) ("Wilms' tumor", 'Disease', (125, 137)) ('mutations', 'Var', (7, 16)) ('CDKN1C', 'Gene', '1028', (0, 6)) ("Wilms' tumor", 'Phenotype', 'HP:0002667', (125, 137)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('umbilical abnormalities', 'Disease', 'MESH:D014496', (59, 82)) ('umbilical abnormalities', 'Disease', (59, 82)) ('associated', 'Reg', (43, 53)) ("Wilms' tumor", 'Disease', 'MESH:D009396', (125, 137)) ('CDKN1C', 'Gene', (0, 6)) 13907 25136447 Epigenetic factors have also been reported including UPD of 11p15, hypomethylation of KCNQ1OT1 gene, and hypermethylation of the genes H19, LIT1, and IGF2 . ('LIT1', 'Gene', '10984', (140, 144)) ('LIT1', 'Gene', (140, 144)) ('H19', 'Gene', '283120', (135, 138)) ('UPD', 'PosReg', (53, 56)) ('H19', 'Gene', (135, 138)) ('IGF2', 'Gene', '3481', (150, 154)) ('KCNQ1OT1', 'Gene', '10984', (86, 94)) ('hypermethylation', 'Var', (105, 121)) ('hypomethylation', 'Var', (67, 82)) ('IGF2', 'Gene', (150, 154)) ('KCNQ1OT1', 'Gene', (86, 94)) ('11p15', 'Protein', (60, 65)) 13908 25136447 Tested epigenetic alterations were not indicative of BWS in our patient. ('epigenetic alterations', 'Var', (7, 29)) ('BWS', 'Disease', 'MESH:D001506', (53, 56)) ('BWS', 'Disease', (53, 56)) ('patient', 'Species', '9606', (64, 71)) 13909 25136447 There may be a wide heterogeneity for epimutations regarding BWS, as the causative genetic factors are still unknown. ('BWS', 'Disease', 'MESH:D001506', (61, 64)) ('BWS', 'Disease', (61, 64)) ('epimutations', 'Var', (38, 50)) 13917 24465590 A Conditional Mouse Mutant in the Tumor Suppressor SdhD Gene Unveils a Link between p21WAF1/Cip1 Induction and Mitochondrial Dysfunction Mutations in mitochondrial complex II (MCII; succinate dehydrogenase, Sdh) genes cause familiar pheochromocytoma/paraganglioma tumors. ('MCI', 'Gene', (176, 179)) ('Mutations', 'Var', (137, 146)) ('SdhD', 'Gene', (51, 55)) ('SdhD', 'Gene', '66925', (51, 55)) ('Mouse', 'Species', '10090', (14, 19)) ('MCI', 'Gene', '622408', (176, 179)) ('familiar pheochromocytoma/paraganglioma tumors', 'Disease', 'MESH:D010673', (224, 270)) ('Cip1', 'Gene', (92, 96)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (233, 249)) ('succinate dehydrogenase', 'Gene', (182, 205)) ('paraganglioma', 'Phenotype', 'HP:0002668', (250, 263)) ('familiar pheochromocytoma/paraganglioma tumors', 'Disease', (224, 270)) ('Mitochondrial Dysfunction', 'Phenotype', 'HP:0003287', (111, 136)) ('succinate dehydrogenase', 'Gene', '30956', (182, 205)) ('tumor', 'Phenotype', 'HP:0002664', (264, 269)) ('cause', 'Reg', (218, 223)) ('Tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('Cip1', 'Gene', '12575', (92, 96)) ('tumors', 'Phenotype', 'HP:0002664', (264, 270)) 13918 24465590 Several mechanisms have been proposed to account for Sdh-mutation-induced tumorigenesis, the most accepted of which is based on the constitutive expression of the hypoxia-inducible factor 1alpha (Hif1alpha) at normal oxygen tension, a theory referred to as "pseudo-hypoxic drive". ('tumor', 'Disease', 'MESH:D009369', (74, 79)) ('oxygen', 'Chemical', 'MESH:D010100', (217, 223)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('Sdh-mutation-induced', 'Var', (53, 73)) ('tumor', 'Disease', (74, 79)) ('hypoxia-inducible factor 1alpha', 'Gene', '15251', (163, 194)) ('Sdh-mutation-induced', 'Gene', (53, 73)) ('hypoxia-inducible factor 1alpha', 'Gene', (163, 194)) 13925 24465590 This new and unprecedented evidence for a link between SdhD dysfunction and p21WAF1/Cip1 will open new avenues for the study of the mechanisms that cause tumors in Sdh mutants. ('SdhD dysfunction', 'Disease', (55, 71)) ('Sdh', 'Gene', (164, 167)) ('tumors', 'Disease', (154, 160)) ('tumors', 'Disease', 'MESH:D009369', (154, 160)) ('p21WAF1/Cip1', 'Gene', '12575', (76, 88)) ('tumors', 'Phenotype', 'HP:0002664', (154, 160)) ('p21WAF1/Cip1', 'Gene', (76, 88)) ('SdhD dysfunction', 'Disease', 'MESH:D006331', (55, 71)) ('tumor', 'Phenotype', 'HP:0002664', (154, 159)) ('mutants', 'Var', (168, 175)) 13927 24465590 Germ-line mutations in the mitochondrial succinate dehydrogenase (Sdh) enzyme -also referred to as mitochondrial complex II (MCII)- or in its accessory units cause familial hereditary pheochromocytoma and paraganglioma. ('succinate dehydrogenase', 'Gene', '30956', (41, 64)) ('Sdh', 'Gene', (66, 69)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (184, 200)) ('paraganglioma', 'Disease', 'MESH:D010235', (205, 218)) ('MCI', 'Gene', (125, 128)) ('cause', 'Reg', (158, 163)) ('succinate dehydrogenase', 'Gene', (41, 64)) ('MCI', 'Gene', '622408', (125, 128)) ('paraganglioma', 'Phenotype', 'HP:0002668', (205, 218)) ('mutations', 'Var', (10, 19)) ('paraganglioma', 'Disease', (205, 218)) ('familial hereditary pheochromocytoma', 'Disease', 'MESH:C531777', (164, 200)) ('familial hereditary pheochromocytoma', 'Disease', (164, 200)) 13932 24465590 Mutations on subunits B, C, A, as well as on the accessory protein SDHAF2, have subsequently also been implicated in paraganglioma, pheochromocytoma, renal cell carcinomas, and gastrointestinal tumors. ('pheochromocytoma', 'Disease', 'MESH:D010673', (132, 148)) ('paraganglioma', 'Disease', 'MESH:D010235', (117, 130)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (150, 171)) ('gastrointestinal tumors', 'Disease', (177, 200)) ('gastrointestinal tumors', 'Phenotype', 'HP:0007378', (177, 200)) ('carcinomas', 'Phenotype', 'HP:0030731', (161, 171)) ('pheochromocytoma', 'Disease', (132, 148)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (132, 148)) ('paraganglioma', 'Phenotype', 'HP:0002668', (117, 130)) ('Mutations', 'Var', (0, 9)) ('tumors', 'Phenotype', 'HP:0002664', (194, 200)) ('implicated in', 'Reg', (103, 116)) ('SDHAF2', 'Gene', '66072', (67, 73)) ('tumor', 'Phenotype', 'HP:0002664', (194, 199)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (150, 170)) ('gastrointestinal tumors', 'Disease', 'MESH:D004067', (177, 200)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (150, 171)) ('SDHAF2', 'Gene', (67, 73)) ('carcinoma', 'Phenotype', 'HP:0030731', (161, 170)) ('renal cell carcinomas', 'Disease', (150, 171)) ('paraganglioma', 'Disease', (117, 130)) 13933 24465590 Several mechanisms have been proposed to account for the tumorigenic role of MCII mutations. ('tumor', 'Disease', 'MESH:D009369', (57, 62)) ('MCI', 'Gene', (77, 80)) ('mutations', 'Var', (82, 91)) ('MCI', 'Gene', '622408', (77, 80)) ('tumor', 'Phenotype', 'HP:0002664', (57, 62)) ('tumor', 'Disease', (57, 62)) 13938 24465590 Hence, inhibition of PHDs could prevent Hif1alpha degradation in normoxic conditions, a situation termed to as "pseudo-hypoxia", which would favor tumor formation and progression. ('tumor', 'Phenotype', 'HP:0002664', (147, 152)) ('tumor', 'Disease', (147, 152)) ('favor', 'PosReg', (141, 146)) ('hypoxia', 'Disease', 'MESH:D000860', (119, 126)) ('progression', 'CPA', (167, 178)) ('hypoxia', 'Disease', (119, 126)) ('degradation', 'MPA', (50, 61)) ('inhibition', 'Var', (7, 17)) ('tumor', 'Disease', 'MESH:D009369', (147, 152)) ('Hif1alpha', 'Protein', (40, 49)) ('prevent', 'NegReg', (32, 39)) 13940 24465590 Thus, impairment of electron transfer at MCII would lead to electron leakage and/or possibly to a biased accumulation of the semi-reduced form of ubiquinone, which ultimately may contribute to mitochondrial reactive oxygen species (ROS) generation. ('impairment', 'Var', (6, 16)) ('electron leakage', 'MPA', (60, 76)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (207, 230)) ('semi-reduced form of ubiquinone', 'MPA', (125, 156)) ('contribute', 'Reg', (179, 189)) ('MCI', 'Gene', '622408', (41, 44)) ('ROS', 'Chemical', 'MESH:D017382', (232, 235)) ('accumulation', 'PosReg', (105, 117)) ('ubiquinone', 'Chemical', 'MESH:D014451', (146, 156)) ('mitochondrial reactive oxygen species', 'MPA', (193, 230)) ('lead to', 'Reg', (52, 59)) ('electron transfer', 'MPA', (20, 37)) ('MCI', 'Gene', (41, 44)) 13948 24465590 Conditional and tissue-specific SdhD mutant strains generated by our group also failed to show an increased predisposition to tumor occurrence. ('mutant', 'Var', (37, 43)) ('tumor', 'Disease', 'MESH:D009369', (126, 131)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('SdhD', 'Gene', (32, 36)) ('tumor', 'Disease', (126, 131)) 13950 24465590 In patients, tumor formation in heterozygous, paternally inherited SDHD-mutation carriers requires the loss of the maternal allele in a phenomenon known as loss of heterozygosity. ('tumor', 'Disease', (13, 18)) ('SDHD-mutation', 'Gene', (67, 80)) ('patients', 'Species', '9606', (3, 11)) ('tumor', 'Disease', 'MESH:D009369', (13, 18)) ('tumor', 'Phenotype', 'HP:0002664', (13, 18)) ('SDHD-mutation', 'Var', (67, 80)) 13956 24465590 Additionally, and given that none of the hypothesis has been definitively established, we performed large-scale gene expression analysis in SDHD-ESR adrenal medulla and kidney tissue soon after SdhD deletion. ('ESR', 'Gene', (145, 148)) ('ESR', 'Gene', '109755', (145, 148)) ('deletion', 'Var', (199, 207)) ('SdhD', 'Gene', (194, 198)) 13979 24465590 For immortalization, BMK cells were electroporated with the plasmids pCMVE1A containing the viral oncogene E1A, and p53DD containing a dominant negative mutant allele of p53 (kindly gifted by Dr. Eileen White) according to a previously reported protocol. ('negative', 'NegReg', (144, 152)) ('p53', 'Gene', '22060', (116, 119)) ('p53', 'Gene', (170, 173)) ('mutant', 'Var', (153, 159)) ('p53', 'Gene', '22060', (170, 173)) ('p53', 'Gene', (116, 119)) 13988 24465590 The microarrays were scanned in a GenePix reader, with data acquired at wavelengths of 635 nm and 532 nm for Cy3 and Cy5, respectively. ('Cy3', 'Chemical', '-', (110, 113)) ('Cy5', 'Chemical', '-', (118, 121)) ('Cy3', 'Var', (110, 113)) ('Cy5', 'Var', (118, 121)) 14003 24465590 This tamoxifen dose-dependency was translated to the general phenotype of mutant SDHD-ESR individuals as these animals stopped gaining weight after administration of the drug, and with the higher dose, even lost weight after two weeks (Figure 1C). ('stopped', 'NegReg', (119, 126)) ('gaining weight', 'Phenotype', 'HP:0004324', (127, 141)) ('ESR', 'Gene', '109755', (86, 89)) ('stopped gaining weight', 'Phenotype', 'HP:0001508', (119, 141)) ('lost', 'NegReg', (207, 211)) ('mutant', 'Var', (74, 80)) ('ESR', 'Gene', (86, 89)) ('gaining weight', 'MPA', (127, 141)) ('tamoxifen', 'Chemical', 'MESH:D013629', (5, 14)) 14005 24465590 Low-dose tamoxifen-treated mutants, although surviving longer than the high-dose treated animals, still had a shorter average life-span (7 weeks) than their wild-type littermates (Figure 1D). ('mutants', 'Var', (27, 34)) ('shorter', 'NegReg', (110, 117)) ('tamoxifen', 'Chemical', 'MESH:D013629', (9, 18)) 14006 24465590 Since the treatment with the low dose of tamoxifen casts doubt about the efficient deletion of SdhD in all the tissues, the rest of experiments shown here were performed with the high dose. ('SdhD', 'Gene', (95, 99)) ('tamoxifen', 'Chemical', 'MESH:D013629', (41, 50)) ('deletion', 'Var', (83, 91)) 14007 24465590 To address the possible activation of the "pseudo-hypoxic drive" mechanism, the expression of several HIF1alpha target genes was analyzed in wild-type (homozygous; +/+), heterozygous (+/-) and SDHD-ESR mutant tissues. ('HIF1alpha', 'Gene', (102, 111)) ('ESR', 'Gene', (198, 201)) ('HIF1alpha', 'Gene', '15251', (102, 111)) ('ESR', 'Gene', '109755', (198, 201)) ('mutant', 'Var', (202, 208)) 14010 24465590 However, when the remaining functional copy of SdhD was deleted, a significant induction of Vegf was observed in the SDHD-ESR kidney only three weeks after the start of injections, whereas for Glut1 and Phd3 their mRNA levels did not significantly increase further (Figure 2B). ('SDHD-ESR kidney', 'Disease', 'MESH:D007674', (117, 132)) ('SdhD', 'Gene', (47, 51)) ('SDHD-ESR kidney', 'Disease', (117, 132)) ('induction', 'PosReg', (79, 88)) ('Glut1', 'Gene', (193, 198)) ('deleted', 'Var', (56, 63)) ('Vegf', 'Gene', '22339', (92, 96)) ('Glut1', 'Gene', '20512', (193, 198)) ('Vegf', 'Gene', (92, 96)) 14013 24465590 Together, these data suggest that activation of "pseudo-hypoxic drive" as a consequence of MCII depletion does not take place in a general and obvious manner in the analyzed mouse tissues. ('MCI', 'Gene', (91, 94)) ('MCI', 'Gene', '622408', (91, 94)) ('depletion', 'Var', (96, 105)) ('mouse', 'Species', '10090', (174, 179)) 14014 24465590 As the diffusion kinetics of the drug throughout the mouse tissues could expand the SdhD deletion on time, thus hampering the detection of transitory Hif1alpha stabilization and the transcriptional activation of its target genes, we decided to establish cell lines from the SDHD-ESR mouse in which the accessibility of the cells to the drug is better controlled. ('SdhD', 'Gene', (84, 88)) ('detection', 'MPA', (126, 135)) ('ESR', 'Gene', '109755', (279, 282)) ('deletion', 'Var', (89, 97)) ('mouse', 'Species', '10090', (283, 288)) ('hampering', 'NegReg', (112, 121)) ('mouse', 'Species', '10090', (53, 58)) ('transcriptional', 'MPA', (182, 197)) ('ESR', 'Gene', (279, 282)) 14019 24465590 Whereas in heterozygous lines no differences were found in either Hif1alpha or Glut1 protein levels with respect to the wild type, the SDHD-ESR mutant line underwent accumulation of both proteins, although with different kinetics of induction (Figure 3A-D). ('Glut1', 'Gene', '20512', (79, 84)) ('ESR', 'Gene', '109755', (140, 143)) ('ESR', 'Gene', (140, 143)) ('accumulation', 'PosReg', (166, 178)) ('mutant', 'Var', (144, 150)) ('Glut1', 'Gene', (79, 84)) ('Hif1alpha', 'MPA', (66, 75)) 14022 24465590 With the aim of identifying alternative molecular pathways altered upon SdhD deletion, and to determine if some tissue-specific features could condition the transcriptional response to MCII depletion, we performed high-throughput gene expression analysis of kidney and adrenal medulla tissue. ('altered', 'Reg', (59, 66)) ('MCI', 'Gene', '622408', (185, 188)) ('deletion', 'Var', (77, 85)) ('transcriptional', 'MPA', (157, 172)) ('SdhD', 'Gene', (72, 76)) ('MCI', 'Gene', (185, 188)) 14024 24465590 The kidney was chosen not only because of the more intense effect on SdhD deletion exerted by tamoxifen, but also due to the finding that renal cell carcinoma, although much less frequently, is also associated with Sdh-mutations. ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (138, 158)) ('associated', 'Reg', (199, 209)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (138, 158)) ('carcinoma', 'Phenotype', 'HP:0030731', (149, 158)) ('deletion', 'Var', (74, 82)) ('Sdh-mutations', 'Gene', (215, 228)) ('SdhD', 'Gene', (69, 73)) ('tamoxifen', 'Chemical', 'MESH:D013629', (94, 103)) ('renal cell carcinoma', 'Disease', (138, 158)) 14034 24465590 Among them, Cdkn1a was significantly up-regulated and showed a log ratio of intensities >=1 in both the adrenal medulla and kidney of the SDHD-ESR mutant (table 2). ('mutant', 'Var', (147, 153)) ('ESR', 'Gene', '109755', (143, 146)) ('Cdkn1a', 'Gene', '12575', (12, 18)) ('up-regulated', 'PosReg', (37, 49)) ('Cdkn1a', 'Gene', (12, 18)) ('ESR', 'Gene', (143, 146)) 14037 24465590 In both cell types, p21WAF/Cip expression was strongly up-regulated in the mutant SDHD-ESR cell lines 4 hours after tamoxifen-induced SdhD deletion, and the amount of protein remained increased after 24 hours (Figure 6). ('up-regulated', 'PosReg', (55, 67)) ('ESR', 'Gene', (87, 90)) ('deletion', 'Var', (139, 147)) ('Cip', 'Gene', '69642', (27, 30)) ('tamoxifen', 'Chemical', 'MESH:D013629', (116, 125)) ('increased', 'PosReg', (184, 193)) ('p21WAF', 'Gene', (20, 26)) ('SdhD', 'Gene', (134, 138)) ('ESR', 'Gene', '109755', (87, 90)) ('Cip', 'Gene', (27, 30)) ('mutant', 'Var', (75, 81)) ('p21WAF', 'Gene', '12575', (20, 26)) 14038 24465590 In this study, we aimed to identify the molecular events triggered after the second hit of the process of MCII mutation-induced tumorigenesis by inducing loss of the second SdhD allele in vivo. ('mutation-induced', 'Var', (111, 127)) ('SdhD', 'Gene', (173, 177)) ('tumor', 'Disease', 'MESH:D009369', (128, 133)) ('MCI', 'Gene', (106, 109)) ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('inducing', 'Reg', (145, 153)) ('tumor', 'Disease', (128, 133)) ('loss', 'NegReg', (154, 158)) ('MCI', 'Gene', '622408', (106, 109)) 14048 24465590 Thus, any subsequent molecular event that causes the cell division machinery to by-pass this checkpoint would drive the cells to replicative catastrophe, accumulating mutations and eventually resulting in tumor transformation. ('resulting in', 'Reg', (192, 204)) ('accumulating', 'PosReg', (154, 166)) ('tumor', 'Disease', 'MESH:D009369', (205, 210)) ('mutations', 'Var', (167, 176)) ('tumor', 'Phenotype', 'HP:0002664', (205, 210)) ('tumor', 'Disease', (205, 210)) ('drive', 'Reg', (110, 115)) ('replicative catastrophe', 'MPA', (129, 152)) 14049 24465590 Previous reports in humans, based on gene expression profiling and unsupervised hierarchical clustering, demonstrate a tight association between pheochromocytomas with VHL and SDH mutations, which distinguishes them from pheochromocytomas with MEN2, RET, and NF1 mutations. ('RET', 'Gene', (250, 253)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (145, 162)) ('VHL', 'Disease', 'MESH:D006623', (168, 171)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (221, 238)) ('mutations', 'Var', (180, 189)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (145, 161)) ('VHL', 'Disease', (168, 171)) ('NF1', 'Gene', (259, 262)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (221, 237)) ('SDH', 'Gene', '6390', (176, 179)) ('NF1', 'Gene', '4763', (259, 262)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (145, 162)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (221, 238)) ('RET', 'Gene', '5979', (250, 253)) ('pheochromocytomas', 'Disease', (145, 162)) ('humans', 'Species', '9606', (20, 26)) ('pheochromocytomas', 'Disease', (221, 238)) ('SDH', 'Gene', (176, 179)) 14054 24465590 It could be that the shorter life-span resulting from administration of the minimal effective dose of tamoxifen, i. e., the minimal amount tested to cause reliable deletion of the SdhD gene, does not allow subsequent tumorigenic events to occur. ('tumor', 'Phenotype', 'HP:0002664', (217, 222)) ('tumor', 'Disease', (217, 222)) ('tamoxifen', 'Chemical', 'MESH:D013629', (102, 111)) ('tumor', 'Disease', 'MESH:D009369', (217, 222)) ('SdhD', 'Gene', (180, 184)) ('deletion', 'Var', (164, 172)) 14062 24465590 It is also worth noting a study by Young et al., in which acute inactivation of pVHL -the ubiquitin ligase part of the proteasome that downregulates Hif1alpha under normoxic conditions- caused a senescent-like phenotype in MEFs, with overexpression of p27, another cyclin-kinase inhibitor. ('inactivation', 'Var', (64, 76)) ('p27', 'Gene', '12576', (252, 255)) ('caused', 'Reg', (186, 192)) ('pVHL', 'Gene', (80, 84)) ('Hif1alpha', 'Protein', (149, 158)) ('MEFs', 'CellLine', 'CVCL:9115', (223, 227)) ('downregulates', 'NegReg', (135, 148)) ('senescent-like phenotype', 'CPA', (195, 219)) ('overexpression', 'PosReg', (234, 248)) ('pVHL', 'Gene', '22346', (80, 84)) ('p27', 'Gene', (252, 255)) 14073 24465590 One striking issue regarding tumors caused by mutations in MCII or associated proteins concerns tissue specificity. ('MCI', 'Gene', (59, 62)) ('MCI', 'Gene', '622408', (59, 62)) ('mutations', 'Var', (46, 55)) ('tumors', 'Disease', (29, 35)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('tumors', 'Phenotype', 'HP:0002664', (29, 35)) ('tumors', 'Disease', 'MESH:D009369', (29, 35)) ('caused', 'Reg', (36, 42)) ('proteins', 'Protein', (78, 86)) 14076 24465590 The identification of p21WAF1/Cip1 as one molecule that responds in a general manner to complete SdhD deletion, together with its critical role in the cell cycle, senescence, and DNA integrity, paints a new picture of the molecular and cellular responses that take place after MCII dysfunction. ('p21WAF1/Cip1', 'Gene', (22, 34)) ('MCII dysfunction', 'Disease', 'MESH:D006331', (277, 293)) ('deletion', 'Var', (102, 110)) ('p21WAF1/Cip1', 'Gene', '12575', (22, 34)) ('SdhD', 'Gene', (97, 101)) ('MCII dysfunction', 'Disease', (277, 293)) 14084 31332495 However, PPGLs related to VHL and HIF2A mutations remain an exception to the rule and should be explored first by [18F]FDOPA. ('VHL', 'Gene', (26, 29)) ('HIF2A', 'Gene', '2034', (34, 39)) ('FDOPA', 'Chemical', 'MESH:C043437', (119, 124)) ('VHL', 'Gene', '7428', (26, 29)) ('mutations', 'Var', (40, 49)) ('HIF2A', 'Gene', (34, 39)) ('PPGLs', 'Chemical', '-', (9, 14)) 14085 31332495 For sporadic phaeochromocytomas or those associated with mutations in NF1/RET/MAX, the use of [18F]FDOPA rather than [68Ga]SSTs is proposed, mainly due to the optimal tumourto-adrenal uptake ratio that facilitate their detection. ('NF1', 'Gene', '4763', (70, 73)) ('associated', 'Reg', (41, 51)) ('RET', 'Gene', (74, 77)) ('tumourto-adrenal', 'Disease', (167, 183)) ('FDOPA', 'Chemical', 'MESH:C043437', (99, 104)) ('tumourto-adrenal', 'Disease', 'MESH:D000310', (167, 183)) ('sporadic phaeochromocytomas', 'Disease', (4, 31)) ('sporadic phaeochromocytomas', 'Disease', 'MESH:C538614', (4, 31)) ('RET', 'Gene', '5979', (74, 77)) ('mutations', 'Var', (57, 66)) ('tumour', 'Phenotype', 'HP:0002664', (167, 173)) ('NF1', 'Gene', (70, 73)) 14088 31332495 They recommend using [18F]FDOPA or [68Ga]SSTs PET/CT as first intention in all situations (diagnosis, post-treatment evaluation, staging, suspicion of relapse), while highlighting the superiority of [68Ga]SSTs in SDHD-related head and neck PPGLs. ('[68Ga]SSTs', 'Var', (199, 209)) ('PPGLs', 'Chemical', '-', (240, 245)) ('[68Ga]', 'Var', (35, 41)) ('FDOPA', 'Chemical', 'MESH:C043437', (26, 31)) 14090 32460727 Identification of a novel SDHB c.563 T > C mutation responsible for Paraganglioma syndrome and genetic analysis of the SDHB gene in China: a case report Pheochromocytoma/paraganglioma (PPGL) is a rare neuroendocrine tumor. ('SDHB', 'Gene', (26, 30)) ('SDHB', 'Gene', (119, 123)) ('Pheochromocytoma/paraganglioma', 'Disease', (153, 183)) ('PPGL', 'Chemical', '-', (185, 189)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (68, 81)) ('neuroendocrine tumor', 'Disease', (201, 221)) ('c.563 T > C', 'Var', (31, 42)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (201, 221)) ('responsible', 'Reg', (52, 63)) ('Paraganglioma syndrome', 'Disease', (68, 90)) ('Pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (153, 183)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (153, 169)) ('neuroendocrine tumor', 'Disease', 'MESH:D018358', (201, 221)) ('paraganglioma', 'Phenotype', 'HP:0002668', (170, 183)) ('tumor', 'Phenotype', 'HP:0002664', (216, 221)) ('PGL', 'Phenotype', 'HP:0002668', (186, 189)) ('Paraganglioma syndrome', 'Disease', 'MESH:D010235', (68, 90)) ('SDHB', 'Gene', '6390', (119, 123)) ('SDHB', 'Gene', '6390', (26, 30)) 14092 32460727 SDHB mutations play an important role in PPGL. ('PPGL', 'Disease', (41, 45)) ('mutations', 'Var', (5, 14)) ('role', 'Reg', (33, 37)) ('SDHB', 'Gene', '6390', (0, 4)) ('PGL', 'Phenotype', 'HP:0002668', (42, 45)) ('PPGL', 'Chemical', '-', (41, 45)) ('SDHB', 'Gene', (0, 4)) 14094 32460727 We report a case of a 23-year-old woman with paraganglioma (PGL) caused by a novel missense SDHB mutation, c.563 T > C (p.Leu188Pro), who presented with paroxysmal hypertension. ('paroxysmal hypertension', 'Disease', (153, 176)) ('p.Leu188Pro', 'SUBSTITUTION', 'None', (120, 131)) ('PGL', 'Phenotype', 'HP:0002668', (60, 63)) ('SDHB', 'Gene', '6390', (92, 96)) ('paroxysmal hypertension', 'Disease', 'MESH:D006973', (153, 176)) ('paraganglioma', 'Phenotype', 'HP:0002668', (45, 58)) ('SDHB', 'Gene', (92, 96)) ('woman', 'Species', '9606', (34, 39)) ('paraganglioma', 'Disease', (45, 58)) ('p.Leu188Pro', 'Var', (120, 131)) ('paroxysmal hypertension', 'Phenotype', 'HP:0000875', (153, 176)) ('hypertension', 'Phenotype', 'HP:0000822', (164, 176)) ('caused by', 'Reg', (65, 74)) ('paraganglioma', 'Disease', 'MESH:D010235', (45, 58)) 14096 32460727 In addition, we searched the literature related to variations in SDHB genes in Chinese patients with PPGL using multiple online databases, including PubMed, China Hospital Knowledge Database and Wanfang Data. ('PPGL', 'Chemical', '-', (101, 105)) ('PGL', 'Phenotype', 'HP:0002668', (102, 105)) ('variations', 'Var', (51, 61)) ('SDHB', 'Gene', '6390', (65, 69)) ('PPGL', 'Disease', (101, 105)) ('patients', 'Species', '9606', (87, 95)) ('SDHB', 'Gene', (65, 69)) 14099 32460727 The common genetic alterations of SDHB in China were c.136C > T (11.4%), c.18C > A (11.4%) and c.725G > A (8.5%). ('c.18C > A', 'Var', (73, 82)) ('c.136C > T', 'Var', (53, 63)) ('c.725G > A', 'Var', (95, 105)) ('SDHB', 'Gene', '6390', (34, 38)) ('SDHB', 'Gene', (34, 38)) 14100 32460727 Some carriers of SDHB mutations (28.1%) developed metastatic PPGL, and a high frequency of head and neck PGLs (HNPGLs) (59.4%) was reported. ('PGL', 'Phenotype', 'HP:0002668', (113, 116)) ('SDHB', 'Gene', '6390', (17, 21)) ('PGL', 'Phenotype', 'HP:0002668', (62, 65)) ('metastatic PPGL', 'Disease', (50, 65)) ('high frequency of head', 'Phenotype', 'HP:0000256', (73, 95)) ('PPGL', 'Chemical', '-', (61, 65)) ('mutations', 'Var', (22, 31)) ('HNPGLs', 'Chemical', '-', (111, 117)) ('SDHB', 'Gene', (17, 21)) ('PGL', 'Phenotype', 'HP:0002668', (105, 108)) ('developed', 'Reg', (40, 49)) 14101 32460727 We describe a classic case with a novel SDHB c.563 T > C mutation. ('c.563 T > C mutation', 'Var', (45, 65)) ('SDHB', 'Gene', '6390', (40, 44)) ('SDHB', 'Gene', (40, 44)) 14102 32460727 Based on our literature review, common SDHB gene mutations in Chinese PPGL patients are c.136C > T, c.18C > A and c.725G > A. Paraganglioma (PGL) and pheochromocytoma (PCC) are also referred to as pheochromocytoma/paraganglioma (PPGL), which are rare neuroendocrine tumors. ('pheochromocytoma', 'Disease', (197, 213)) ('SDHB', 'Gene', '6390', (39, 43)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (251, 272)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (197, 213)) ('PGL', 'Phenotype', 'HP:0002668', (230, 233)) ('PGL', 'Phenotype', 'HP:0002668', (141, 144)) ('PCC', 'Phenotype', 'HP:0002666', (168, 171)) ('paraganglioma', 'Phenotype', 'HP:0002668', (214, 227)) ('c.136C > T', 'Var', (88, 98)) ('c.725G > A.', 'Var', (114, 125)) ('SDHB', 'Gene', (39, 43)) ('Paraganglioma', 'Disease', 'MESH:D010235', (126, 139)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (251, 272)) ('tumors', 'Phenotype', 'HP:0002664', (266, 272)) ('PPGL', 'Chemical', '-', (229, 233)) ('patients', 'Species', '9606', (75, 83)) ('tumor', 'Phenotype', 'HP:0002664', (266, 271)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (150, 166)) ('pheochromocytoma/paraganglioma', 'Disease', (197, 227)) ('neuroendocrine tumors', 'Disease', (251, 272)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (126, 139)) ('PPGL', 'Chemical', '-', (70, 74)) ('Paraganglioma', 'Disease', (126, 139)) ('pheochromocytoma', 'Disease', (150, 166)) ('c.18C > A', 'Var', (100, 109)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (197, 213)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (150, 166)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (251, 271)) ('PGL', 'Phenotype', 'HP:0002668', (71, 74)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (197, 227)) 14109 32460727 In many cases, SDHB-related disease is characterized by a single tumor, and carriers of gene variants commonly develop extra-adrenal PGLs, PCCs and metastatic disease than do carriers of mutations in the other SDH subunits. ('SDH', 'Gene', '6390', (210, 213)) ('SDHB', 'Gene', '6390', (15, 19)) ('PCCs and metastatic disease', 'Disease', 'MESH:C538445', (139, 166)) ('PGL', 'Phenotype', 'HP:0002668', (133, 136)) ('tumor', 'Disease', (65, 70)) ('PCC', 'Phenotype', 'HP:0002666', (139, 142)) ('SDHB', 'Gene', (15, 19)) ('variants', 'Var', (93, 101)) ('SDH', 'Gene', (210, 213)) ('extra-adrenal PGLs', 'Disease', (119, 137)) ('develop', 'PosReg', (111, 118)) ('SDH', 'Gene', '6390', (15, 18)) ('tumor', 'Disease', 'MESH:D009369', (65, 70)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) ('SDH', 'Gene', (15, 18)) 14112 32460727 The aims of the study are to report a novel SDHB c.563 T > C mutation and to investigate SDHB variations in Chinese PPGL patients. ('SDHB', 'Gene', '6390', (44, 48)) ('c.563 T > C', 'Var', (49, 60)) ('PPGL', 'Chemical', '-', (116, 120)) ('SDHB', 'Gene', (44, 48)) ('SDHB', 'Gene', '6390', (89, 93)) ('PGL', 'Phenotype', 'HP:0002668', (117, 120)) ('patients', 'Species', '9606', (121, 129)) ('SDHB', 'Gene', (89, 93)) 14113 32460727 Therefore, we collected all literature related to SDHB variations in PPGL in Chinese people. ('SDHB', 'Gene', (50, 54)) ('variations', 'Var', (55, 65)) ('people', 'Species', '9606', (85, 91)) ('PPGL', 'Gene', (69, 73)) ('PGL', 'Phenotype', 'HP:0002668', (70, 73)) ('PPGL', 'Chemical', '-', (69, 73)) ('SDHB', 'Gene', '6390', (50, 54)) 14126 32460727 Genetic testing demonstrated that the patient carried a missense mutation in exon 6 of the SDHB gene [c.563 T > C] (Fig. ('[c.563 T > C]', 'Var', (101, 114)) ('SDHB', 'Gene', '6390', (91, 95)) ('SDHB', 'Gene', (91, 95)) ('patient', 'Species', '9606', (38, 45)) 14132 32460727 Our study reports a novel SDHB c.563 T > C mutation. ('SDHB', 'Gene', (26, 30)) ('c.563 T > C', 'Var', (31, 42)) ('SDHB', 'Gene', '6390', (26, 30)) 14133 32460727 To date, Human Gene Mutation Database (HGDM, http://www.hgmd.cf.ac.uk/) includes 254 SDHB gene mutations, but the c.563 T > C variant has not been reported. ('Human', 'Species', '9606', (9, 14)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('mutations', 'Var', (95, 104)) 14140 32460727 In addition, 9/32 (28.1%) carriers of SDHB mutations developed metastatic PPGL, including 5 cases of head and neck paragangliomas (HNPGLs), 1 case of PCC and 3 cases of extra-adrenal sympathetic paraganglioma (sPGL). ('HNPGLs', 'Chemical', '-', (131, 137)) ('PPGL', 'Chemical', '-', (74, 78)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (110, 129)) ('SDHB', 'Gene', '6390', (38, 42)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (110, 129)) ('developed', 'Reg', (53, 62)) ('PGL', 'Phenotype', 'HP:0002668', (133, 136)) ('PCC', 'Phenotype', 'HP:0002666', (150, 153)) ('SDHB', 'Gene', (38, 42)) ('PGL', 'Phenotype', 'HP:0002668', (211, 214)) ('PGL', 'Phenotype', 'HP:0002668', (75, 78)) ('metastatic PPGL', 'Disease', (63, 78)) ('paraganglioma', 'Phenotype', 'HP:0002668', (195, 208)) ('paraganglioma', 'Phenotype', 'HP:0002668', (115, 128)) ('paragangliomas', 'Phenotype', 'HP:0002668', (115, 129)) ('neck paragangliomas', 'Disease', (110, 129)) ('adrenal sympathetic paraganglioma', 'Disease', (175, 208)) ('mutations', 'Var', (43, 52)) ('adrenal sympathetic paraganglioma', 'Disease', 'MESH:D010236', (175, 208)) 14141 32460727 Although previous studies have shown much higher rates for the development of sPGLs (approximately 60%), the frequency of HNPGLs among SDHB mutation carriers was high in our study, at approximately 59.4%. ('SDHB', 'Gene', '6390', (135, 139)) ('HNPGLs', 'Chemical', '-', (122, 128)) ('mutation', 'Var', (140, 148)) ('sPGLs', 'Chemical', '-', (78, 83)) ('SDHB', 'Gene', (135, 139)) ('PGL', 'Phenotype', 'HP:0002668', (79, 82)) ('PGL', 'Phenotype', 'HP:0002668', (124, 127)) 14142 32460727 Recently, French and Dutch groups published mutation studies of SDHB with proportions similar to those reported in our study, and the prevalence rates of PCC and sPGLs in their studies were 1.6 and 6.5% or 2.1 and 13.4%, respectively. ('mutation', 'Var', (44, 52)) ('SDHB', 'Gene', '6390', (64, 68)) ('SDHB', 'Gene', (64, 68)) ('PCC', 'Phenotype', 'HP:0002666', (154, 157)) ('PGL', 'Phenotype', 'HP:0002668', (163, 166)) ('sPGLs', 'Chemical', '-', (162, 167)) 14144 32460727 In addition, our review includes three HNPGL studies, which may increase the proportion of HNPGLs among SDHB mutation carriers. ('HNPGLs', 'Chemical', '-', (91, 97)) ('mutation', 'Var', (109, 117)) ('PGL', 'Phenotype', 'HP:0002668', (41, 44)) ('SDHB', 'Gene', '6390', (104, 108)) ('HNPGLs', 'Disease', (91, 97)) ('PGL', 'Phenotype', 'HP:0002668', (93, 96)) ('SDHB', 'Gene', (104, 108)) 14145 32460727 In our study, 9/32 (28.1%) SDHB mutation carriers developed metastatic PGL/PCC, which included 5 cases of HNPGLs, 1 case of PCC and 3 cases of sPGLs. ('PCC', 'Phenotype', 'HP:0002666', (124, 127)) ('metastatic PGL/PCC', 'Disease', (60, 78)) ('PCC', 'Phenotype', 'HP:0002666', (75, 78)) ('SDHB', 'Gene', (27, 31)) ('SDHB', 'Gene', '6390', (27, 31)) ('PGL', 'Phenotype', 'HP:0002668', (144, 147)) ('HNPGLs', 'Chemical', '-', (106, 112)) ('developed', 'Reg', (50, 59)) ('sPGLs', 'Chemical', '-', (143, 148)) ('PGL', 'Phenotype', 'HP:0002668', (108, 111)) ('mutation', 'Var', (32, 40)) ('PGL', 'Phenotype', 'HP:0002668', (71, 74)) 14146 32460727 Some have proposed that selection bias in referral-based studies is a major reason for a very high rate of malignant PGL in SDHB mutation carriers. ('SDHB', 'Gene', (124, 128)) ('PGL', 'Phenotype', 'HP:0002668', (117, 120)) ('SDHB', 'Gene', '6390', (124, 128)) ('mutation', 'Var', (129, 137)) 14151 32460727 Moreover, a recent study reported that patients with SDH mutation have a higher risk of later development of metachronous tumors and recurrence than do patients without mutation in this gene. ('mutation', 'Var', (57, 65)) ('SDH', 'Gene', (53, 56)) ('metachronous tumors', 'Disease', 'MESH:D016609', (109, 128)) ('patients', 'Species', '9606', (39, 47)) ('recurrence', 'CPA', (133, 143)) ('SDH', 'Gene', '6390', (53, 56)) ('tumor', 'Phenotype', 'HP:0002664', (122, 127)) ('metachronous tumors', 'Disease', (109, 128)) ('tumors', 'Phenotype', 'HP:0002664', (122, 128)) ('patients', 'Species', '9606', (152, 160)) 14152 32460727 In summary, radiological screening is very important among carriers of SDHB mutations, and follow-up of those patients, especially the head and neck region, should be undertaken. ('SDHB', 'Gene', '6390', (71, 75)) ('SDHB', 'Gene', (71, 75)) ('mutations', 'Var', (76, 85)) ('patients', 'Species', '9606', (110, 118)) 14153 32460727 Of the 35 SDHB gene variants, we found 25 different mutations, and SDHB pathogenic mutations included missense mutations (n = 10), nonsense mutations (n = 6), frameshift mutations (n = 4), splice site mutations (n = 3), synonymous mutations (n = 1), and deletions of one or more exons (n = 1). ('mutations', 'Var', (83, 92)) ('missense mutations', 'Var', (102, 120)) ('variants', 'Var', (20, 28)) ('SDHB', 'Gene', '6390', (67, 71)) ('frameshift mutations', 'Var', (159, 179)) ('nonsense mutations', 'Var', (131, 149)) ('synonymous mutations', 'Var', (220, 240)) ('splice site mutations', 'Var', (189, 210)) ('SDHB', 'Gene', (67, 71)) ('deletions of', 'Var', (254, 266)) ('SDHB', 'Gene', '6390', (10, 14)) ('SDHB', 'Gene', (10, 14)) 14154 32460727 Common genetic alterations of SDHB in Chinese patients included c.136C > T (11.4%), c.18C > A (11.4%) and c.725G > A (8.5%). ('patients', 'Species', '9606', (46, 54)) ('SDHB', 'Gene', '6390', (30, 34)) ('c.18C > A', 'Var', (84, 93)) ('SDHB', 'Gene', (30, 34)) ('c.136C > T', 'Var', (64, 74)) ('c.725G > A', 'Var', (106, 116)) 14155 32460727 The c.136C > T (p.R46X) mutation and the c.725G > A (p.R242H) mutation occur in the first highly conserved (I44Y45R46) motif of SDHB and the second (L240Y241R240) motif, which are essential for incorporation of the Fe-S cluster into SDHB. ('SDHB', 'Gene', (128, 132)) ('p.R46X', 'SUBSTITUTION', 'None', (16, 22)) ('I44Y45R46', 'Var', (108, 117)) ('p.R242H', 'SUBSTITUTION', 'None', (53, 60)) ('SDHB', 'Gene', '6390', (128, 132)) ('SDHB', 'Gene', '6390', (233, 237)) ('Fe-S', 'Chemical', 'MESH:D007501', (215, 219)) ('p.R242H', 'Var', (53, 60)) ('SDHB', 'Gene', (233, 237)) ('p.R46X', 'Var', (16, 22)) ('c.725G > A', 'Var', (41, 51)) ('c.136C > T', 'Var', (4, 14)) 14156 32460727 Fe-S clusters are vitally important to electron transport and function, and this mutation completely abrogates SDH activity. ('abrogates', 'NegReg', (101, 110)) ('Fe-S', 'Chemical', 'MESH:D007501', (0, 4)) ('SDH', 'Gene', '6390', (111, 114)) ('mutation', 'Var', (81, 89)) ('activity', 'MPA', (115, 123)) ('SDH', 'Gene', (111, 114)) 14157 32460727 However, the c.18C > A (p.A6A) mutation is a synonymous mutation, and 3/4 of carriers of this variation have metastatic disease. ('p.A6A', 'Var', (24, 29)) ('metastatic disease', 'Disease', (109, 127)) ('c.18C > A', 'Var', (13, 22)) ('p.A6A', 'SUBSTITUTION', 'None', (24, 29)) 14158 32460727 Thus, we suggest that c.18C > A may be one of the phenotypic causes of HNPGLs. ('HNPGLs', 'Chemical', '-', (71, 77)) ('c.18C > A', 'Var', (22, 31)) ('PGL', 'Phenotype', 'HP:0002668', (73, 76)) ('HNPGLs', 'Disease', (71, 77)) 14159 32460727 Interestingly, in our results, three frameshift mutations (c.757delT, c.20-22delinsC and c.112delC) were associated with metastatic disease. ('c.20-22del', 'DELETION', 'None', (70, 80)) ('c.112delC', 'Var', (89, 98)) ('c.757delT', 'DELETION', 'None', (59, 68)) ('c.757delT', 'Var', (59, 68)) ('c.20-22del', 'Var', (70, 80)) ('associated', 'Reg', (105, 115)) ('metastatic disease', 'Disease', (121, 139)) ('c.112delC', 'DELETION', 'None', (89, 98)) 14160 32460727 This change may render PPGL caused by frameshift mutations prone to metastasis, which highlights the necessity of follow-up for those patients. ('PPGL', 'Disease', (23, 27)) ('frameshift mutations', 'Var', (38, 58)) ('PPGL', 'Chemical', '-', (23, 27)) ('patients', 'Species', '9606', (134, 142)) ('PGL', 'Phenotype', 'HP:0002668', (24, 27)) ('metastasis', 'CPA', (68, 78)) ('prone', 'Reg', (59, 64)) 14161 32460727 On the other hand, we did not perform genomic analysis of family members, which limits our ability to assess the association of PPGL morbidity with SDHB mutations. ('SDHB', 'Gene', (148, 152)) ('mutations', 'Var', (153, 162)) ('PGL', 'Phenotype', 'HP:0002668', (129, 132)) ('SDHB', 'Gene', '6390', (148, 152)) ('PPGL', 'Chemical', '-', (128, 132)) 14162 32460727 Moreover, without functional studies, we cannot determine the true pathogenicity of SDHB mutations. ('SDHB', 'Gene', (84, 88)) ('mutations', 'Var', (89, 98)) ('SDHB', 'Gene', '6390', (84, 88)) 14163 32460727 In conclusion, we report a novel SDHB c.563 T > C mutation and investigate SDHB mutations among PPGL patients in China in this literature review. ('c.563 T > C', 'Var', (38, 49)) ('patients', 'Species', '9606', (101, 109)) ('SDHB', 'Gene', '6390', (33, 37)) ('SDHB', 'Gene', '6390', (75, 79)) ('SDHB', 'Gene', (33, 37)) ('SDHB', 'Gene', (75, 79)) ('PGL', 'Phenotype', 'HP:0002668', (97, 100)) ('PPGL', 'Chemical', '-', (96, 100)) 14165 32460727 Large studies of SDHB mutations are needed to analyze the characteristics of these patients in China. ('patients', 'Species', '9606', (83, 91)) ('SDHB', 'Gene', '6390', (17, 21)) ('mutations', 'Var', (22, 31)) ('SDHB', 'Gene', (17, 21)) 14184 32188704 NCT02721732 Rare cancers pose many challenges. ('cancers', 'Disease', (18, 25)) ('cancers', 'Disease', 'MESH:D009369', (18, 25)) ('cancer', 'Phenotype', 'HP:0002664', (18, 24)) ('NCT02721732', 'Var', (0, 11)) ('cancers', 'Phenotype', 'HP:0002664', (18, 25)) 14195 32188704 Recently, the FDA provided its first tissue-agnostic/site-agnostic drug approval:for pembrolizumab in patients with unresectable or metastatic microsatellite instability:high or mismatch repair deficient solid tumors. ('deficient solid tumors', 'Disease', 'MESH:D009369', (194, 216)) ('tumor', 'Phenotype', 'HP:0002664', (210, 215)) ('patients', 'Species', '9606', (102, 110)) ('tumors', 'Phenotype', 'HP:0002664', (210, 216)) ('deficient solid tumors', 'Disease', (194, 216)) ('pembrolizumab', 'Chemical', 'MESH:C582435', (85, 98)) ('mismatch repair', 'Var', (178, 193)) 14327 32188704 Nevertheless, given that pembrolizumab has been approved for first-line treatment of advanced non-small cell lung cancer in patients with high PD-L1 expression according to an FDA-approved test in the absence of EGFR or ALK molecular alterations, PD-L1 expression likely reflects an immune-active tumor milieu that should be investigated further. ('pembrolizumab', 'Chemical', 'MESH:C582435', (25, 38)) ('lung cancer', 'Phenotype', 'HP:0100526', (109, 120)) ('non-small cell lung cancer', 'Disease', (94, 120)) ('patients', 'Species', '9606', (124, 132)) ('tumor', 'Disease', 'MESH:D009369', (297, 302)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (98, 120)) ('non-small cell lung cancer', 'Phenotype', 'HP:0030358', (94, 120)) ('ALK', 'Gene', (220, 223)) ('high', 'Var', (138, 142)) ('expression', 'MPA', (149, 159)) ('PD-L1', 'Gene', (143, 148)) ('cancer', 'Phenotype', 'HP:0002664', (114, 120)) ('ALK', 'Gene', '238', (220, 223)) ('non-small cell lung cancer', 'Disease', 'MESH:D002289', (94, 120)) ('tumor', 'Phenotype', 'HP:0002664', (297, 302)) ('tumor', 'Disease', (297, 302)) ('EGFR', 'Gene', '1956', (212, 216)) ('EGFR', 'Gene', (212, 216)) 14342 31561209 Particularly, 68Ga-labeled-SSAs have shown excellent results in the diagnosis and staging of PPGLs and in selecting patients for PRRT as a potential alternative to 123/131I-MIBG theranostics. ('PPGLs', 'Disease', (93, 98)) ('SSA', 'Chemical', '-', (27, 30)) ('patients', 'Species', '9606', (116, 124)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (168, 177)) ('PPGLs', 'Chemical', '-', (93, 98)) ('68Ga-labeled-SSAs', 'Var', (14, 31)) ('PRRT', 'Chemical', '-', (129, 133)) 14343 31561209 PRRT using 90Y/177Lu-DOTA-SSAs has shown promise for treatment of PPGLs with improvement of clinical symptoms and/or disease control. ('90Y/177Lu-DOTA-SSAs', 'Var', (11, 30)) ('PPGLs', 'Disease', (66, 71)) ('PRRT', 'Chemical', '-', (0, 4)) ('177Lu-DOTA-SSA', 'Chemical', '-', (15, 29)) ('improvement', 'PosReg', (77, 88)) ('PPGLs', 'Chemical', '-', (66, 71)) 14345 31561209 Such an approval has recently been obtained for high-specific-activity 131I-MIBG for inoperable/metastatic PPGL. ('inoperable/metastatic PPGL', 'Disease', (85, 111)) ('PPGL', 'Chemical', '-', (107, 111)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (71, 80)) ('131I-MIBG', 'Var', (71, 80)) 14353 31561209 Kinase signaling group (cluster 2) consists of germline or somatic mutations in ret proto-oncogene (RET), neurofibromin 1 (NF1), transmembrane protein 127 (TMEM127), MYC-associated factor X (MAX), and HRas proto-oncogene (HRAS). ('ret', 'Gene', '5979', (80, 83)) ('MYC-associated factor X', 'Gene', (166, 189)) ('NF1', 'Gene', '4763', (123, 126)) ('MYC-associated factor X', 'Gene', '4149', (166, 189)) ('HRas', 'Gene', '3265', (201, 205)) ('MAX', 'Gene', (191, 194)) ('RET', 'Gene', '5979', (100, 103)) ('TMEM127', 'Gene', (156, 163)) ('NF1', 'Gene', (123, 126)) ('neurofibromin 1', 'Gene', '4763', (106, 121)) ('HRas', 'Gene', (201, 205)) ('neurofibromin 1', 'Gene', (106, 121)) ('mutations', 'Var', (67, 76)) ('TMEM127', 'Gene', '55654', (156, 163)) ('HRAS', 'Gene', '3265', (222, 226)) ('MAX', 'Gene', '4149', (191, 194)) ('RET', 'Gene', (100, 103)) ('HRAS', 'Gene', (222, 226)) ('ret', 'Gene', (80, 83)) 14354 31561209 Wnt signaling group (cluster 3) includes newly recognized somatic mutations in cold shock domain containing E1 (CSDE1), as well as somatic gene fusions affecting mastermind like transcriptional coactivator 3 (MAML3). ('mutations', 'Var', (66, 75)) ('MAML3', 'Gene', '55534', (209, 214)) ('shock', 'Phenotype', 'HP:0031273', (84, 89)) ('MAML3', 'Gene', (209, 214)) ('cold shock domain containing E1', 'Gene', (79, 110)) ('CSDE1', 'Gene', (112, 117)) ('mastermind like transcriptional coactivator 3', 'Gene', '55534', (162, 207)) ('mastermind like transcriptional coactivator 3', 'Gene', (162, 207)) ('CSDE1', 'Gene', '7812', (112, 117)) ('cold shock domain containing E1', 'Gene', '7812', (79, 110)) 14361 31561209 Furthermore, PPGL with an underlying SDHB mutation are associated with a higher risk of aggressive behavior than other hereditary PPGLs leading ultimately to death, particularly due to development of metastatic disease. ('aggressive behavior', 'Disease', (88, 107)) ('SDHB', 'Gene', '6390', (37, 41)) ('aggressive behavior', 'Disease', 'MESH:D001523', (88, 107)) ('death', 'Disease', 'MESH:D003643', (158, 163)) ('PPGLs', 'Chemical', '-', (130, 135)) ('death', 'Disease', (158, 163)) ('PPGL', 'Chemical', '-', (13, 17)) ('PPGL', 'Chemical', '-', (130, 134)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (88, 107)) ('mutation', 'Var', (42, 50)) ('SDHB', 'Gene', (37, 41)) ('metastatic disease', 'Disease', (200, 218)) 14376 31561209 Also, per lesion detection rate of 68Ga-DOTATATE PET/CT was superior to 123I-MIBG scintigraphy (100 %, 29/27 vs. 6.9%, 2/27) in 10 extra-adrenal PGL patients. ('patients', 'Species', '9606', (149, 157)) ('68Ga-DOTATATE', 'Var', (35, 48)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (72, 81)) ('extra-adrenal PGL', 'Disease', (131, 148)) ('68Ga-DOTATATE', 'Chemical', 'MESH:C513399', (35, 48)) 14382 31561209 The elevated clinical value of 68Ga-DOTATATE was also observed in the pediatric population with SDHx mutation. ('mutation', 'Var', (101, 109)) ('SDHx', 'Gene', (96, 100)) ('clinical value', 'MPA', (13, 27)) ('elevated', 'PosReg', (4, 12)) ('68Ga-DOTATATE', 'Chemical', 'MESH:C513399', (31, 44)) 14383 31561209 68Ga-DOTA-SSA PET/CT can therefore, be recommended for diagnosis, staging, and follow-up imaging of PPGL with underlying SDHx mutations. ('SSA', 'Chemical', '-', (10, 13)) ('mutations', 'Var', (126, 135)) ('PPGL', 'Chemical', '-', (100, 104)) ('PPGL', 'Gene', (100, 104)) ('SDHx', 'Gene', (121, 125)) 14392 31561209 Such high risk-factors have been identified as: SDHB, SDHA germline mutations, ATRX mutation, male sex, patient with large primary tumors (various studies have identified that from >4.5-5 cm to >10 cm), noradrenergic or dopaminergic biochemical phenotype, older age at primary tumor diagnosis (>40-50 years), and high proliferative index (, Jha et al. ('primary tumor', 'Disease', (123, 136)) ('SDHB', 'Gene', '6390', (48, 52)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('SDHA', 'Gene', '6389', (54, 58)) ('primary tumor', 'Disease', (269, 282)) ('primary tumor', 'Disease', 'MESH:D001932', (123, 136)) ('tumors', 'Phenotype', 'HP:0002664', (131, 137)) ('ATRX', 'Gene', (79, 83)) ('tumor', 'Phenotype', 'HP:0002664', (277, 282)) ('patient', 'Species', '9606', (104, 111)) ('tumors', 'Disease', (131, 137)) ('SDHA', 'Gene', (54, 58)) ('mutations', 'Var', (68, 77)) ('primary tumor', 'Disease', 'MESH:D001932', (269, 282)) ('tumors', 'Disease', 'MESH:D009369', (131, 137)) ('ATRX', 'Gene', '546', (79, 83)) ('SDHB', 'Gene', (48, 52)) ('mutation', 'Var', (84, 92)) 14405 31561209 In the kinase signaling group, 18F-FDOPA is probably the best radiopharmaceutical due to its high tumor uptake together with a limited uptake in the remaining (unaffected) adrenal gland. ('uptake', 'MPA', (135, 141)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (31, 40)) ('tumor', 'Disease', 'MESH:D009369', (98, 103)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('18F-FDOPA', 'Var', (31, 40)) ('tumor', 'Disease', (98, 103)) 14409 31561209 For those associated with mutations in NF1/RET/MAX, 18F-FDOPA PET/CT should be recommended first due to the optimal tumor-to-adrenal uptake ratio that facilitate their detection. ('MAX', 'Gene', '4149', (47, 50)) ('RET', 'Gene', (43, 46)) ('NF1', 'Gene', (39, 42)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (52, 61)) ('tumor', 'Disease', 'MESH:D009369', (116, 121)) ('NF1', 'Gene', '4763', (39, 42)) ('mutations', 'Var', (26, 35)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('RET', 'Gene', '5979', (43, 46)) ('tumor', 'Disease', (116, 121)) ('MAX', 'Gene', (47, 50)) 14417 31561209 Initially, 123/131I-MIBG targeting norepinephrine transporter system and more recently 68Ga/90Y/177Lu-DOTA-SSA analogs targeting peptide (somatostatin) receptors have been introduced as theranostic agents for PPGLs. ('norepinephrine transporter', 'Gene', '6530', (35, 61)) ('177Lu-DOTA-SSA', 'Chemical', '-', (96, 110)) ('123/131I-MIBG', 'Var', (11, 24)) ('PPGLs', 'Chemical', '-', (209, 214)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (15, 24)) ('PPGLs', 'Disease', (209, 214)) ('norepinephrine transporter', 'Gene', (35, 61)) 14425 31561209 Myelodysplastic syndrome (MDS) and acute leukemias (ALs) have been reported in patients treated with large amounts of 131I-MIBG and chemotherapy (Carrasquillo et al. ('131I-MIBG', 'Var', (118, 127)) ('leukemia', 'Phenotype', 'HP:0001909', (41, 49)) ('acute leukemias', 'Phenotype', 'HP:0002488', (35, 50)) ('Myelodysplastic syndrome', 'Phenotype', 'HP:0002863', (0, 24)) ('acute leukemias', 'Disease', 'MESH:D015470', (35, 50)) ('acute leukemias', 'Disease', (35, 50)) ('MDS', 'Disease', (26, 29)) ('MDS', 'Disease', 'MESH:D009190', (26, 29)) ('patients', 'Species', '9606', (79, 87)) ('leukemias', 'Phenotype', 'HP:0001909', (41, 50)) ('Myelodysplastic syndrome', 'Disease', (0, 24)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (118, 127)) ('Myelodysplastic syndrome', 'Disease', 'MESH:D009190', (0, 24)) 14433 31561209 Of the 68 patients who received at least one therapeutic dose of HSA 131I-MIBG, 17 (25%; 95% CI, 16-37%) had a durable reduction in baseline antihypertensive medication use. ('antihypertensive medication', 'Phenotype', 'HP:0000822', (141, 168)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (69, 78)) ('hypertensive', 'Disease', 'MESH:D006973', (145, 157)) ('hypertensive', 'Disease', (145, 157)) ('patients', 'Species', '9606', (10, 18)) ('reduction', 'NegReg', (119, 128)) ('HSA', 'Chemical', '-', (65, 68)) ('HSA', 'Var', (65, 68)) 14444 31561209 Although effective, the use of HSA 131I-MIBG is associated with higher rate of hematologic toxicity which possibly got amplified due to previous cytotoxic therapies together with some individual susceptibilities. ('HSA 131I-MIBG', 'Var', (31, 44)) ('HSA', 'Chemical', '-', (31, 34)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (35, 44)) ('hematologic', 'Disease', (79, 90)) ('toxicity', 'Disease', 'MESH:D064420', (91, 99)) ('toxicity', 'Disease', (91, 99)) 14452 31561209 Selection of good candidates is based on the use of a companion diagnostic agent corresponding to the same SSA labeled with 111Indium or 68Ga, which is now preferred for molecular imaging of PPGL. ('PPGL', 'Chemical', '-', (191, 195)) ('SSA', 'Chemical', '-', (107, 110)) ('111Indium', 'Var', (124, 133)) ('68Ga', 'Var', (137, 141)) ('111Indium', 'Chemical', 'MESH:C000615551', (124, 133)) 14463 31561209 The main predictors of poor OS outcome after PRRT are non-specific and include high Ki-67 index (greater than 10%), high uptake on 18F-FDG, involvement of more than two organ systems, local vs. distant metastases, low Karnofsky performance score (<= 70%), high tumor burden, identified progressive disease after first PRRT, and when PRRT is delivered as salvage therapy after chemotherapy. ('metastases', 'Disease', 'MESH:D009362', (202, 212)) ('tumor', 'Phenotype', 'HP:0002664', (261, 266)) ('high', 'Var', (116, 120)) ('tumor', 'Disease', (261, 266)) ('low', 'NegReg', (214, 217)) ('PRRT', 'Chemical', '-', (45, 49)) ('PRRT', 'Chemical', '-', (333, 337)) ('involvement', 'Reg', (140, 151)) ('Ki-67', 'Gene', (84, 89)) ('18F-FDG', 'Chemical', 'MESH:D019788', (131, 138)) ('tumor', 'Disease', 'MESH:D009369', (261, 266)) ('PRRT', 'Chemical', '-', (318, 322)) ('metastases', 'Disease', (202, 212)) 14464 31561209 In another study, highly elevated maximum standardized uptake values (SUVmax) on pre-therapeutic 68Ga-DOTATOC were associated with tumor shrinkage, reduction of tumor markers, and improved overall clinical condition after PRRT with 90Y-DOTATOC. ('PRRT', 'Chemical', '-', (222, 226)) ('reduction', 'NegReg', (148, 157)) ('tumor', 'Disease', 'MESH:D009369', (131, 136)) ('90Y-DOTA', 'Chemical', '-', (232, 240)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('tumor', 'Disease', 'MESH:D009369', (161, 166)) ('tumor', 'Disease', (131, 136)) ('improved', 'PosReg', (180, 188)) ('maximum standardized uptake values', 'MPA', (34, 68)) ('elevated', 'PosReg', (25, 33)) ('tumor', 'Phenotype', 'HP:0002664', (161, 166)) ('tumor', 'Disease', (161, 166)) ('68Ga-DOTATOC', 'Var', (97, 109)) 14466 31561209 Toxicity is limited, especially when using 177Lu due to its lower tissue penetration range compared with 90Y (Table 3). ('tissue penetration range', 'CPA', (66, 90)) ('Toxicity', 'Disease', (0, 8)) ('Toxicity', 'Disease', 'MESH:D064420', (0, 8)) ('177Lu', 'Chemical', 'MESH:C000615061', (43, 48)) ('177Lu', 'Var', (43, 48)) ('lower', 'NegReg', (60, 65)) 14471 31561209 There have been large patient series that reported grade 3/4 nephrotoxicity ranging from 0% (0/343) with 177Lu; 0.3% (20/581) with 177Lu; 1.3% (1/74) with 177Lu; and to 1.5% (12/807) with 90Y, 177Lu, or 90Y+177Lu. ('90Y+177Lu', 'Var', (203, 212)) ('177Lu', 'Chemical', 'MESH:C000615061', (155, 160)) ('90Y', 'Var', (188, 191)) ('177Lu', 'Chemical', 'MESH:C000615061', (131, 136)) ('nephrotoxicity', 'Disease', (61, 75)) ('177Lu', 'Var', (131, 136)) ('nephrotoxicity', 'Disease', 'MESH:D007674', (61, 75)) ('177Lu', 'Var', (155, 160)) ('177Lu', 'Chemical', 'MESH:C000615061', (193, 198)) ('177Lu', 'Chemical', 'MESH:C000615061', (105, 110)) ('177Lu', 'Chemical', 'MESH:C000615061', (207, 212)) ('177Lu', 'Var', (105, 110)) ('177Lu', 'Var', (193, 198)) ('patient', 'Species', '9606', (22, 29)) 14474 31561209 The grade 3/4 hematotoxicty reported in large patient series ranged from 9.5% (77/807) with 90Y, 177Lu, or 90Y+177Lu; 10% (61/582) with 177Lu; 11% (34/320) with 177Lu; and to 11.3% (23/208) with 177Lu. ('patient', 'Species', '9606', (46, 53)) ('90Y', 'Var', (92, 95)) ('90Y+177Lu', 'Var', (107, 116)) ('177Lu', 'Chemical', 'MESH:C000615061', (97, 102)) ('177Lu', 'Chemical', 'MESH:C000615061', (111, 116)) ('177Lu', 'Var', (97, 102)) ('hematotoxicty', 'Disease', (14, 27)) ('177Lu', 'Var', (136, 141)) ('177Lu', 'Chemical', 'MESH:C000615061', (136, 141)) ('177Lu', 'Chemical', 'MESH:C000615061', (161, 166)) ('177Lu', 'Chemical', 'MESH:C000615061', (195, 200)) ('hematotoxicty', 'Disease', 'None', (14, 27)) ('177Lu', 'Var', (161, 166)) 14477 31561209 Furthermore, MDS or AL were reported to range from 1.4% (3/208) with 177Lu; 2.0% (22/148) with 90Y or 177Lu; 2.2% (13/582) with 177Lu; and to 1.4% (32/2225) in the meta-analysis comprising 16 studies. ('177Lu', 'Chemical', 'MESH:C000615061', (69, 74)) ('90Y', 'Var', (95, 98)) ('177Lu', 'Var', (69, 74)) ('177Lu', 'Chemical', 'MESH:C000615061', (128, 133)) ('MDS', 'Disease', (13, 16)) ('177Lu', 'Var', (128, 133)) ('MDS', 'Disease', 'MESH:D009190', (13, 16)) ('177Lu', 'Chemical', 'MESH:C000615061', (102, 107)) ('177Lu', 'Var', (102, 107)) 14481 31561209 Recently, grade 3/4 hepatotoxicity in NET patients with liver metastases was observed in 3% (20/581) with 177Lu and any hepatotoxicity in 10.8% (10/93) with either of 90Y or 177Lu or 90Y+177Lu based PRRT. ('177Lu', 'Var', (106, 111)) ('hepatotoxicity', 'Disease', 'MESH:D056486', (120, 134)) ('177Lu', 'Var', (174, 179)) ('hepatotoxicity', 'Disease', 'MESH:D056486', (20, 34)) ('90Y', 'Var', (167, 170)) ('PRRT', 'Chemical', '-', (199, 203)) ('177Lu', 'Chemical', 'MESH:C000615061', (187, 192)) ('liver metastases', 'Disease', (56, 72)) ('90Y+177Lu', 'Var', (183, 192)) ('hepatotoxicity', 'Disease', (120, 134)) ('177Lu', 'Chemical', 'MESH:C000615061', (106, 111)) ('liver metastases', 'Disease', 'MESH:D009362', (56, 72)) ('hepatotoxicity', 'Disease', (20, 34)) ('patients', 'Species', '9606', (42, 50)) ('177Lu', 'Chemical', 'MESH:C000615061', (174, 179)) 14484 31561209 It was also observed that the frequency of nephrotoxicity and hematotoxicity was highest with 90Y followed by 90Y+177Lu and least with 177Lu based PRRT. ('nephrotoxicity and hematotoxicity', 'Disease', 'MESH:D007674', (43, 76)) ('177Lu', 'Chemical', 'MESH:C000615061', (135, 140)) ('PRRT', 'Chemical', '-', (147, 151)) ('177Lu', 'Chemical', 'MESH:C000615061', (114, 119)) ('90Y+177Lu', 'Var', (110, 119)) ('90Y', 'Var', (94, 97)) 14496 31561209 reported the response rates of PRRT using either 90Y-DOTATOC (25 patients) or 177Lu-DOTATOC (3 patients) in surgically unresectable PPGLs. ('90Y-DOTATOC', 'Var', (49, 60)) ('patients', 'Species', '9606', (95, 103)) ('177Lu', 'Chemical', 'MESH:C000615061', (78, 83)) ('90Y-DOTA', 'Chemical', '-', (49, 57)) ('PPGLs', 'Disease', (132, 137)) ('patients', 'Species', '9606', (65, 73)) ('PRRT', 'Chemical', '-', (31, 35)) ('177Lu-DOTATOC', 'Var', (78, 91)) ('PPGLs', 'Chemical', '-', (132, 137)) 14529 31561209 had described the outcomes of 22 patients with progressive/metastatic PPGLs treated with either 131I-MIBG (11 patients), 90Y-DOTATATE (8 patients), 177Lu-DOTATATE (1 patient) or combination of 131I-MIBG with 90Y/177Lu-DOTATATE (2 patients). ('patient', 'Species', '9606', (137, 144)) ('131I-MIBG', 'Var', (193, 202)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (148, 162)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (96, 105)) ('131I-MIBG', 'Var', (96, 105)) ('patient', 'Species', '9606', (33, 40)) ('PPGLs', 'Disease', (70, 75)) ('patient', 'Species', '9606', (230, 237)) ('patient', 'Species', '9606', (110, 117)) ('patient', 'Species', '9606', (166, 173)) ('90Y/177Lu-DOTATATE', 'Chemical', '-', (208, 226)) ('patients', 'Species', '9606', (137, 145)) ('PPGLs', 'Chemical', '-', (70, 75)) ('patients', 'Species', '9606', (33, 41)) ('177Lu-DOTATATE', 'Var', (148, 162)) ('patients', 'Species', '9606', (230, 238)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (193, 202)) ('90Y-DOTATATE', 'Chemical', '-', (121, 133)) ('patients', 'Species', '9606', (110, 118)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (212, 226)) 14531 31561209 In the subgroup of 15 patients with extradrenal PGLs (21 treatments, from which 13 were with PRRT and 8 with 131I-MIBG), PRRT performed significantly better than 131I-MIBG in terms of OS, PFS, and response to treatment. ('better', 'PosReg', (150, 156)) ('PRRT', 'Var', (121, 125)) ('PFS', 'MPA', (188, 191)) ('patients', 'Species', '9606', (22, 30)) ('PRRT', 'Chemical', '-', (121, 125)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (162, 171)) ('PRRT', 'Chemical', '-', (93, 97)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (109, 118)) 14532 31561209 Four patients (18.1%) developed renal toxicity related to radionuclide treatment, with grade 3 renal toxicity in a patient treated with 90Y-DOTATATE and 131I-MIBG. ('patient', 'Species', '9606', (5, 12)) ('131I-MIBG', 'Var', (153, 162)) ('patients', 'Species', '9606', (5, 13)) ('renal toxicity', 'Disease', 'MESH:D007674', (32, 46)) ('90Y-DOTATATE', 'Chemical', '-', (136, 148)) ('renal toxicity', 'Disease', (32, 46)) ('renal toxicity', 'Disease', (95, 109)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (153, 162)) ('patient', 'Species', '9606', (115, 122)) ('renal toxicity', 'Disease', 'MESH:D007674', (95, 109)) 14540 31561209 One patient developed MDS after 45 months following 6 cycles of 177Lu-DOTATATE (including retreatment, cumulative dose 44.4 GBq) and died after 4.5 years of first cycle of PRRT due to complications. ('PRRT', 'Chemical', '-', (172, 176)) ('patient', 'Species', '9606', (4, 11)) ('MDS', 'Disease', (22, 25)) ('GBq', 'Chemical', '-', (124, 127)) ('died', 'Disease', (133, 137)) ('MDS', 'Disease', 'MESH:D009190', (22, 25)) ('died', 'Disease', 'MESH:D003643', (133, 137)) ('177Lu-DOTATATE', 'Var', (64, 78)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (64, 78)) ('ret', 'Gene', (90, 93)) ('ret', 'Gene', '5979', (90, 93)) 14581 31561209 Vagal nerve PGL is usually related to SDHx mutation (mainly SDHD) in approximately 40% of patients. ('mutation', 'Var', (43, 51)) ('SDHD', 'Gene', (60, 64)) ('Vagal nerve PGL', 'Disease', (0, 15)) ('SDHD', 'Gene', '6392', (60, 64)) ('SDHx', 'Gene', (38, 42)) ('related', 'Reg', (27, 34)) ('patients', 'Species', '9606', (90, 98)) 14598 31561209 Therefore, surgical strategy should be tailored to each situation with the knowledge of the genetic status since upto 70% of patients with extraadrenal retroperitoneal PGL may carry germline mutations in SDHx or VHL genes. ('SDHx', 'Gene', (204, 208)) ('ret', 'Gene', '5979', (152, 155)) ('carry', 'Reg', (176, 181)) ('germline mutations', 'Var', (182, 200)) ('VHL', 'Gene', (212, 215)) ('VHL', 'Gene', '7428', (212, 215)) ('ret', 'Gene', (152, 155)) ('patients', 'Species', '9606', (125, 133)) 14599 31561209 Large PPGLs and those associated to SDHB mutation are associated with a higher risk for metastatic spread and imaging is required to fully localize the extent of disease at whole-body scale. ('SDHB', 'Gene', '6390', (36, 40)) ('SDHB', 'Gene', (36, 40)) ('metastatic spread', 'CPA', (88, 105)) ('PPGLs', 'Chemical', '-', (6, 11)) ('mutation', 'Var', (41, 49)) 14600 31561209 In patients with non- or incompletely resectable large PGL, a radiotherapeutic management could be considered (also as complementary therapy after debulking surgery), especially for patients with SDHB mutation which are prone to develop metastases and symptomatic patients (e.g. ('metastases', 'Disease', 'MESH:D009362', (237, 247)) ('SDHB', 'Gene', '6390', (196, 200)) ('mutation', 'Var', (201, 209)) ('patients', 'Species', '9606', (3, 11)) ('patients', 'Species', '9606', (182, 190)) ('develop', 'PosReg', (229, 236)) ('patients', 'Species', '9606', (264, 272)) ('SDHB', 'Gene', (196, 200)) ('metastases', 'Disease', (237, 247)) 14602 31561209 The use of PRRT using 177Lu-DOTA-SSA will be better suited to SDHx-related PPGL than 131I-MIBG. ('177Lu-DOTA-SSA', 'Var', (22, 36)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (85, 94)) ('PPGL', 'Disease', (75, 79)) ('SDHx-related PPGL', 'Disease', (62, 79)) ('PPGL', 'Chemical', '-', (75, 79)) ('177Lu-DOTA-SSA', 'Chemical', '-', (22, 36)) ('PRRT', 'Chemical', '-', (11, 15)) 14613 31561209 Additionally, combined 177Lu-DOTA-SSA and cold SSA can be considered in SSTR positive patients and its efficacy can be determined in future trials. ('SSA', 'Chemical', '-', (47, 50)) ('SSA', 'Chemical', '-', (34, 37)) ('177Lu-DOTA-SSA', 'Chemical', '-', (23, 37)) ('177Lu-DOTA-SSA', 'Var', (23, 37)) ('SSTR positive', 'Disease', (72, 85)) ('patients', 'Species', '9606', (86, 94)) 14614 31561209 Moreover, patients with tumor phenotype showing both or discordant molecular targets on various lesions may theoretically benefit from a combined or sequential radionuclide therapeutic approach using PRRT and 131I-MIBG, but further trials are required to assess efficacy and potential toxicity of this regimen. ('tumor', 'Phenotype', 'HP:0002664', (24, 29)) ('PRRT', 'Chemical', '-', (200, 204)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (209, 218)) ('ret', 'Gene', (112, 115)) ('tumor', 'Disease', (24, 29)) ('toxicity', 'Disease', 'MESH:D064420', (285, 293)) ('toxicity', 'Disease', (285, 293)) ('ret', 'Gene', '5979', (112, 115)) ('131I-MIBG', 'Var', (209, 218)) ('patients', 'Species', '9606', (10, 18)) ('tumor', 'Disease', 'MESH:D009369', (24, 29)) ('benefit', 'PosReg', (122, 129)) 14624 31561209 Preliminary results of a trial in NETs (P-PRRT, ) have shown that the use of patient-specific PRRT dosimetry might increase absorbed dose delivered to a tumor (median 1.26-fold; range: 0.47-2.7-fold) compared to fixed-dose regimen, without increased toxicity (oral communication OP-181, congress). ('toxicity', 'Disease', 'MESH:D064420', (250, 258)) ('tumor', 'Disease', 'MESH:D009369', (153, 158)) ('toxicity', 'Disease', (250, 258)) ('PRRT', 'Var', (94, 98)) ('increase', 'PosReg', (115, 123)) ('PRRT', 'Chemical', '-', (42, 46)) ('tumor', 'Disease', (153, 158)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('PRRT', 'Chemical', '-', (94, 98)) ('patient', 'Species', '9606', (77, 84)) 14650 31561209 IA PRRT resulted in a 4-fold higher intrahepatic tumor accumulation compared to intravenous infusion due to high first-pass extraction, decreasing to 1.3 times greater at 72 hours. ('higher', 'PosReg', (29, 35)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('intrahepatic tumor accumulation', 'Disease', 'MESH:D002780', (36, 67)) ('PRRT', 'Chemical', '-', (3, 7)) ('first-pass extraction', 'MPA', (113, 134)) ('PRRT', 'Var', (3, 7)) ('intrahepatic tumor accumulation', 'Disease', (36, 67)) 14657 31561209 The effect of PPGL driver mutations on these parameters and response to immunotherapy would be of particular interest. ('PPGL', 'Chemical', '-', (14, 18)) ('mutations', 'Var', (26, 35)) ('PPGL', 'Gene', (14, 18)) 14660 31561209 A preclinical study has shown that PRRT leads to increased infiltration of antigen-presenting cells and natural killer cells into tumors, suggesting a mechanistic role for the inflammatory response followed by increased innate immunity in the action of PRRT. ('tumors', 'Disease', (130, 136)) ('PRRT', 'Chemical', '-', (253, 257)) ('tumors', 'Disease', 'MESH:D009369', (130, 136)) ('tumors', 'Phenotype', 'HP:0002664', (130, 136)) ('PRRT', 'Var', (35, 39)) ('increased', 'PosReg', (49, 58)) ('infiltration', 'MPA', (59, 71)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('PRRT', 'Chemical', '-', (35, 39)) 14662 31561209 More recently, there has been an evidence that radiolabeled SSTR2 antagonists generate higher tumor doses and more DNA double-strand breaks than agonists, resulting in better treatment efficacy despite poor internalisation. ('DNA double-strand breaks', 'MPA', (115, 139)) ('internalisation', 'MPA', (207, 222)) ('tumor', 'Disease', 'MESH:D009369', (94, 99)) ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('SSTR2', 'Gene', '6752', (60, 65)) ('better', 'PosReg', (168, 174)) ('tumor', 'Disease', (94, 99)) ('treatment efficacy', 'CPA', (175, 193)) ('SSTR2', 'Gene', (60, 65)) ('antagonists', 'Var', (66, 77)) ('higher', 'PosReg', (87, 93)) 14664 31561209 An evans blue (EB) modification of DOTA-octreotate, resulted in a radionuclide 177Lu-DOTA-EB-TATE which markedly increased binding to circulating serum albumin, a slower clearance through the urinary tract and thus, an increased half-life in blood was observed thereby increasing tumor retention. ('modification', 'Var', (19, 31)) ('binding', 'Interaction', (123, 130)) ('clearance through the urinary', 'MPA', (170, 199)) ('serum albumin', 'Gene', '213', (146, 159)) ('177Lu-DOTA-EB-TATE', 'Chemical', '-', (79, 97)) ('serum albumin', 'Gene', (146, 159)) ('tumor retention', 'Disease', (280, 295)) ('DOTA-octreotate', 'Chemical', '-', (35, 50)) ('evans blue', 'Chemical', 'MESH:D005070', (3, 13)) ('half-life', 'MPA', (229, 238)) ('tumor retention', 'Disease', 'MESH:D016055', (280, 295)) ('EB', 'Chemical', 'MESH:D005070', (90, 92)) ('tumor', 'Phenotype', 'HP:0002664', (280, 285)) ('slower', 'NegReg', (163, 169)) ('increased', 'PosReg', (113, 122)) ('increasing', 'PosReg', (269, 279)) ('EB', 'Chemical', 'MESH:D005070', (15, 17)) ('increased', 'PosReg', (219, 228)) 14665 31561209 In a pilot study by Zhang et al in advanced NET patients, 177Lu-DOTA-EB-TATE demonstrated a 7.9-fold increase in delivered tumor doses when comparable total body effective doses of 177Lu-DOTATATE (0.174 millisievert/megabecquerel (mSv/MBq), 3 patients) and 177Lu-DOTA-EB-TATE (0.205 mSv/MBq, 5 patients). ('177Lu-DOTA-EB-TATE', 'Chemical', '-', (257, 275)) ('tumor', 'Disease', (123, 128)) ('patients', 'Species', '9606', (243, 251)) ('patients', 'Species', '9606', (294, 302)) ('increase', 'PosReg', (101, 109)) ('tumor', 'Disease', 'MESH:D009369', (123, 128)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (181, 195)) ('patients', 'Species', '9606', (48, 56)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('177Lu-DOTA-EB-TATE', 'Var', (58, 76)) ('177Lu-DOTA-EB-TATE', 'Chemical', '-', (58, 76)) 14666 31561209 However, significant increase in dose delivery to the kidneys (3.2-fold) and bone marrow (18.2-fold) were noted in patients receiving 177Lu-DOTA-EB-TATE than those receiving 177Lu-DOTATATE (, JNM). ('patients', 'Species', '9606', (115, 123)) ('177Lu-DOTA-EB-TATE', 'Chemical', '-', (134, 152)) ('dose delivery', 'MPA', (33, 46)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (174, 188)) ('177Lu-DOTA-EB-TATE', 'Var', (134, 152)) ('increase', 'PosReg', (21, 29)) 14743 31842905 There were more benign and nonfunctional LATs in the laparoscopic adrenalectomy group than in the open adrenalectomy group (P < 0.05). ('nonfunctional LATs', 'CPA', (27, 45)) ('laparoscopic', 'Var', (53, 65)) ('LATs', 'Chemical', '-', (41, 45)) 14808 30558313 Contrary, some PPGLs mixed with pancreatic neuroendocrine tumors or neuroblastomas. ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (43, 64)) ('tumor', 'Phenotype', 'HP:0002664', (58, 63)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (68, 81)) ('pancreatic neuroendocrine tumor', 'Phenotype', 'HP:0030405', (32, 63)) ('tumors', 'Phenotype', 'HP:0002664', (58, 64)) ('mixed', 'Reg', (21, 26)) ('neuroblastomas', 'Phenotype', 'HP:0003006', (68, 82)) ('neuroblastomas', 'Disease', 'MESH:D009447', (68, 82)) ('pancreatic neuroendocrine tumors', 'Disease', (32, 64)) ('pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (32, 64)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (43, 63)) ('neuroblastomas', 'Disease', (68, 82)) ('PPGLs', 'Var', (15, 20)) 14815 30558313 Similarly, PPGLs are separated into 4 groups named after their molecular characteristics: pseudohypoxia related to succinate dehydrogenase or VHL/EPAS1 disturbances, wnt-altered and kinase-signaling pathways. ('pseudohypoxia', 'Disease', 'None', (90, 103)) ('VHL', 'Disease', 'MESH:D006623', (142, 145)) ('EPAS1', 'Gene', '2034', (146, 151)) ('VHL', 'Disease', (142, 145)) ('EPAS1', 'Gene', (146, 151)) ('disturbances', 'Var', (152, 164)) ('pseudohypoxia', 'Disease', (90, 103)) 14855 30558313 Results showed a separation into two clusters, one consisting of low and high grade gliomas and a second including NBL, PNET, and PPGL (Figure 4, Supplementary Figures S10A-C and S11A-C). ('NBL', 'Phenotype', 'HP:0003006', (115, 118)) ('S11A', 'Var', (179, 183)) ('S10A', 'Var', (168, 172)) ('gliomas', 'Disease', (84, 91)) ('gliomas', 'Disease', 'MESH:D005910', (84, 91)) ('S11A', 'SUBSTITUTION', 'None', (179, 183)) ('gliomas', 'Phenotype', 'HP:0009733', (84, 91)) ('glioma', 'Phenotype', 'HP:0009733', (84, 90)) ('S10A', 'SUBSTITUTION', 'None', (168, 172)) 14873 30558313 This includes presence of both telomerase activation and alternative lengthening of telomeres due to ATRX or DAXX truncation as well as somatic or germline driver mutations in MEN1. ('telomerase', 'Enzyme', (31, 41)) ('mutations', 'Var', (163, 172)) ('DAXX', 'Gene', '1616', (109, 113)) ('MEN1', 'Gene', (176, 180)) ('MEN1', 'Gene', '4221', (176, 180)) ('activation', 'PosReg', (42, 52)) ('ATRX', 'Gene', (101, 105)) ('DAXX', 'Gene', (109, 113)) ('ATRX', 'Gene', '546', (101, 105)) 14920 30538672 Mutations of genes that encode any of the subunits A, B, C, or D or the complex assembly factor 2 (AF2) account for a group of overlapping yet distinct hereditary syndromes termed SDHx. ('account for', 'Reg', (104, 115)) ('factor 2', 'Gene', '8458', (89, 97)) ('SDHx', 'Disease', (180, 184)) ('Mutations', 'Var', (0, 9)) ('factor 2', 'Gene', (89, 97)) ('SDHx', 'Chemical', '-', (180, 184)) 14925 30538672 This technique is especially useful in the context of suspected SDHx mutations. ('mutations', 'Var', (69, 78)) ('SDHx', 'Chemical', '-', (64, 68)) ('SDHx', 'Gene', (64, 68)) 14934 30538672 More recently, a study of a cohort reported by the National Institutes of Health (NIH) revealed co-secreting dopamine (DA) tumors in some FH mutated patients. ('mutated', 'Var', (141, 148)) ('tumors', 'Disease', (123, 129)) ('tumors', 'Disease', 'MESH:D009369', (123, 129)) ('patients', 'Species', '9606', (149, 157)) ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('DA', 'Chemical', 'MESH:D004298', (119, 121)) ('FH', 'Gene', '2271', (138, 140)) ('co-secreting', 'MPA', (96, 108)) ('dopamine', 'Chemical', 'MESH:D004298', (109, 117)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) 14936 30538672 were the first to identify a gain-of-function somatic mutation in exon 12 of EPAS1 (G1588A and C1589T) in patients with PPGLs. ('EPAS1', 'Gene', '2034', (77, 82)) ('gain-of-function', 'PosReg', (29, 45)) ('G1588A', 'Var', (84, 90)) ('G1588A', 'Mutation', 'c.1588G>A', (84, 90)) ('EPAS1', 'Gene', (77, 82)) ('C1589T', 'Var', (95, 101)) ('PPGLs', 'Chemical', '-', (120, 125)) ('C1589T', 'Mutation', 'c.1589C>T', (95, 101)) ('patients', 'Species', '9606', (106, 114)) ('PGLs', 'Phenotype', 'HP:0002668', (121, 125)) ('PPGLs', 'Disease', (120, 125)) 14937 30538672 These mutations caused defects on the proline residues at the hydroxylation site of HIF-2alpha leading to its reduced degradation and stabilization. ('reduced', 'NegReg', (110, 117)) ('degradation', 'MPA', (118, 129)) ('HIF-2alpha', 'Gene', (84, 94)) ('defects', 'NegReg', (23, 30)) ('stabilization', 'MPA', (134, 147)) ('proline', 'Chemical', 'MESH:D011392', (38, 45)) ('proline residues at the', 'MPA', (38, 61)) ('HIF-2alpha', 'Gene', '2034', (84, 94)) ('mutations', 'Var', (6, 15)) 14948 30538672 Pathogenic mutations in H-RAS were firstly identified in 2013. ('mutations', 'Var', (11, 20)) ('H-RAS', 'Gene', (24, 29)) ('H-RAS', 'Gene', '3265', (24, 29)) 14949 30538672 WES of tumor DNA in four cases with phenotype suggesting an underlying pathogenic genetic variant revealed the presence of 2 hotspot mutations in H-RAS (G13R and Q61K) in two of them. ('Q61K', 'Mutation', 'rs28933406', (162, 166)) ('tumor', 'Disease', (7, 12)) ('H-RAS', 'Gene', (146, 151)) ('G13R', 'Mutation', 'rs104894228', (153, 157)) ('G13R', 'Var', (153, 157)) ('tumor', 'Disease', 'MESH:D009369', (7, 12)) ('H-RAS', 'Gene', '3265', (146, 151)) ('Q61K', 'Var', (162, 166)) ('tumor', 'Phenotype', 'HP:0002664', (7, 12)) 14951 30538672 Further validation in a cohort of 58 additional samples obtained showed an accumulated frequency of 6.9% (4/58) of missense somatic mutations in H-RAS: G13R (n = 1), Q61K (n = 1), and Q61R (n = 2). ('Q61R', 'Var', (184, 188)) ('H-RAS', 'Gene', (145, 150)) ('Q61R', 'Mutation', 'rs121913233', (184, 188)) ('G13R', 'Mutation', 'rs104894228', (152, 156)) ('missense somatic', 'Var', (115, 131)) ('Q61K', 'Mutation', 'rs28933406', (166, 170)) ('G13R', 'Var', (152, 156)) ('H-RAS', 'Gene', '3265', (145, 150)) ('Q61K', 'Var', (166, 170)) 14953 30538672 The association of CSDE1 to PPGL was recently described by TCGA group in a cohort study of 176 PPGL patients, in which four were found to have a somatic mutation: two frameshift, and two splice-site:, in CSDE1. ('CSDE1', 'Gene', (204, 209)) ('CSDE1', 'Gene', '7812', (204, 209)) ('frameshift', 'Var', (167, 177)) ('CSDE1', 'Gene', (19, 24)) ('CSDE1', 'Gene', '7812', (19, 24)) ('patients', 'Species', '9606', (100, 108)) ('PPGL', 'Disease', (28, 32)) 14955 30538672 Mutations in this gene result in downregulation of the apoptosis protease activator protein 1 (APAF1), which controls apoptosis in PCC cells under normal conditions. ('PCC', 'Gene', '1421', (131, 134)) ('Mutations', 'Var', (0, 9)) ('APAF1', 'Gene', (95, 100)) ('APAF1', 'Gene', '317', (95, 100)) ('PCC', 'Gene', (131, 134)) ('downregulation', 'NegReg', (33, 47)) 14962 30538672 Finding UBTF-MAML3 fusion predicts a poor prognosis, as compared with other syndromic forms of PPGL. ('fusion', 'Var', (19, 25)) ('MAML3', 'Gene', '55534', (13, 18)) ('MAML3', 'Gene', (13, 18)) ('UBTF', 'Gene', '7343', (8, 12)) ('UBTF', 'Gene', (8, 12)) 14968 30538672 were the first to report a case with a germline mutation in MDH2: a male patient diagnosed with multiple PGLs. ('PGLs', 'Phenotype', 'HP:0002668', (105, 109)) ('germline mutation', 'Var', (39, 56)) ('patient', 'Species', '9606', (73, 80)) ('MDH2', 'Gene', '4191', (60, 64)) ('MDH2', 'Gene', (60, 64)) 14972 30538672 Deficiency of this enzyme prevents degradation of HIF-alpha and resulting in HIF stabilization leading to a global activation of signaling pathways that lead to tumorigenesis. ('HIF-alpha', 'Protein', (50, 59)) ('activation', 'PosReg', (115, 125)) ('degradation', 'MPA', (35, 46)) ('HIF stabilization', 'MPA', (77, 94)) ('signaling pathways', 'Pathway', (129, 147)) ('prevents', 'NegReg', (26, 34)) ('tumor', 'Disease', 'MESH:D009369', (161, 166)) ('tumor', 'Phenotype', 'HP:0002664', (161, 166)) ('tumor', 'Disease', (161, 166)) ('lead to', 'Reg', (153, 160)) ('Deficiency', 'Var', (0, 10)) 14974 30538672 were the first to describe the association of mutations in PHD2 with polycythemia and PPGLs. ('mutations', 'Var', (46, 55)) ('PPGLs', 'Disease', (86, 91)) ('association', 'Interaction', (31, 42)) ('polycythemia', 'Disease', (69, 81)) ('PHD2', 'Gene', (59, 63)) ('PGLs', 'Phenotype', 'HP:0002668', (87, 91)) ('PHD2', 'Gene', '54583', (59, 63)) ('PPGLs', 'Chemical', '-', (86, 91)) ('polycythemia', 'Phenotype', 'HP:0001901', (69, 81)) ('polycythemia', 'Disease', 'MESH:D011086', (69, 81)) 14978 30538672 In the patient with the mutation in PHD1 (EGLN2), sensitivity of erythroid progenitors to EPO and erythropoietin receptor (EpoR) activity were inappropriately increased and resulted in polycythemia with no or mild increase in EPO levels with increased EpoR expression. ('EpoR', 'Gene', '2057', (252, 256)) ('resulted in', 'Reg', (173, 184)) ('PHD1', 'Gene', '112398', (36, 40)) ('expression', 'MPA', (257, 267)) ('EPO', 'Gene', '2056', (226, 229)) ('increase', 'PosReg', (214, 222)) ('polycythemia', 'Phenotype', 'HP:0001901', (185, 197)) ('EPO', 'Gene', '2056', (90, 93)) ('EPO', 'Gene', (226, 229)) ('sensitivity', 'MPA', (50, 61)) ('EPO', 'Gene', (90, 93)) ('patient', 'Species', '9606', (7, 14)) ('increased', 'PosReg', (242, 251)) ('EGLN2', 'Gene', '112398', (42, 47)) ('EGLN2', 'Gene', (42, 47)) ('erythropoietin receptor', 'Gene', '2057', (98, 121)) ('polycythemia', 'Disease', (185, 197)) ('mutation', 'Var', (24, 32)) ('polycythemia', 'Disease', 'MESH:D011086', (185, 197)) ('PHD1', 'Gene', (36, 40)) ('EpoR', 'Gene', (252, 256)) ('EpoR', 'Gene', (123, 127)) ('increased', 'PosReg', (159, 168)) ('EpoR', 'Gene', '2057', (123, 127)) ('erythropoietin receptor', 'Gene', (98, 121)) 14980 30538672 Thus, deficiency of IRP1 increases HIF2alpha by dissociating sequences of HIF2alpha mRNA from iron-responsive element and suppressing protein translation. ('IRP1', 'Gene', (20, 24)) ('IRP1', 'Gene', '48', (20, 24)) ('protein translation', 'MPA', (134, 153)) ('HIF2alpha', 'Gene', (74, 83)) ('sequences', 'MPA', (61, 70)) ('deficiency', 'Var', (6, 16)) ('suppressing', 'NegReg', (122, 133)) ('HIF2alpha', 'Gene', '2034', (74, 83)) ('HIF2alpha', 'Gene', '2034', (35, 44)) ('iron', 'Chemical', 'MESH:D007501', (94, 98)) ('dissociating', 'NegReg', (48, 60)) ('HIF2alpha', 'Gene', (35, 44)) 14983 30538672 in a patient with a medical history of polycythemia vera with a proven JAK2 mutation, hypertension, diaphoresis, and abdominal pain that led to the diagnosis of PCC years later. ('polycythemia vera', 'Disease', (39, 56)) ('JAK2', 'Gene', '3717', (71, 75)) ('patient', 'Species', '9606', (5, 12)) ('abdominal pain', 'Phenotype', 'HP:0002027', (117, 131)) ('diaphoresis', 'Phenotype', 'HP:0000975', (100, 111)) ('JAK2', 'Gene', (71, 75)) ('polycythemia', 'Phenotype', 'HP:0001901', (39, 51)) ('PCC', 'Gene', (161, 164)) ('abdominal pain', 'Disease', (117, 131)) ('hypertension', 'Disease', 'MESH:D006973', (86, 98)) ('abdominal pain', 'Disease', 'MESH:D015746', (117, 131)) ('pain', 'Phenotype', 'HP:0012531', (127, 131)) ('polycythemia vera', 'Disease', 'MESH:D011087', (39, 56)) ('led to', 'Reg', (137, 143)) ('hypertension', 'Disease', (86, 98)) ('mutation', 'Var', (76, 84)) ('hypertension', 'Phenotype', 'HP:0000822', (86, 98)) ('PCC', 'Gene', '1421', (161, 164)) 14985 30538672 Subsequent tumor DNA sequencing revealed a somatic, loss of function mutation in IRP1 located on exon 3 splicing site. ('tumor', 'Phenotype', 'HP:0002664', (11, 16)) ('IRP1', 'Gene', '48', (81, 85)) ('tumor', 'Disease', (11, 16)) ('loss of function', 'NegReg', (52, 68)) ('mutation', 'Var', (69, 77)) ('IRP1', 'Gene', (81, 85)) ('tumor', 'Disease', 'MESH:D009369', (11, 16)) 14987 30538672 Defects in H3F3A have been linked with diffuse intrinsic pontine glioma (DIPG), chondroblastoma, and giant cell tumor of the bone (GCT). ('linked', 'Reg', (27, 33)) ('DIPG', 'Chemical', '-', (73, 77)) ('giant cell tumor', 'Disease', (101, 117)) ('glioma', 'Disease', (65, 71)) ('H3F3A', 'Gene', '3020', (11, 16)) ('chondroblastoma', 'Disease', (80, 95)) ('Defects', 'Var', (0, 7)) ('glioma', 'Disease', 'MESH:D005910', (65, 71)) ('chondroblastoma', 'Phenotype', 'HP:0030432', (80, 95)) ('glioma', 'Phenotype', 'HP:0009733', (65, 71)) ('GCT', 'Phenotype', 'HP:0011847', (131, 134)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('giant cell tumor', 'Disease', 'MESH:D005870', (101, 117)) ('chondroblastoma', 'Disease', 'MESH:D002804', (80, 95)) ('H3F3A', 'Gene', (11, 16)) ('tumor of the bone', 'Phenotype', 'HP:0010622', (112, 129)) ('giant cell tumor of the bone', 'Phenotype', 'HP:0011847', (101, 129)) 14988 30538672 analyzed 43 samples of 41 patients using exome or transcriptome sequencing and detected a postzygotic H3F3A mutation in three tumors from one patient with a history of recurrent GCT. ('patient', 'Species', '9606', (26, 33)) ('H3F3A', 'Gene', '3020', (102, 107)) ('tumors', 'Disease', 'MESH:D009369', (126, 132)) ('tumors', 'Disease', (126, 132)) ('tumors', 'Phenotype', 'HP:0002664', (126, 132)) ('H3F3A', 'Gene', (102, 107)) ('patient', 'Species', '9606', (142, 149)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('patients', 'Species', '9606', (26, 34)) ('mutation', 'Var', (108, 116)) ('GCT', 'Phenotype', 'HP:0011847', (178, 181)) 14990 30538672 Further analysis showed that this mutation was identical to an oncogenic driver of sporadic GCT (c.103 G > T, p.G34W). ('c.103 G > T', 'Mutation', 'rs868820087', (97, 108)) ('p.G34W', 'Mutation', 'rs868820087', (110, 116)) ('GCT', 'Phenotype', 'HP:0011847', (92, 95)) ('c.103 G > T', 'Var', (97, 108)) ('p.G34W', 'Var', (110, 116)) 14991 30538672 Furthermore, additional variants in other chromatin remodeling genes (KMT2B, EZH2, SETD2, ATRX, JMJD1C, KDM2B) were reported in this study. ('KMT2B', 'Gene', (70, 75)) ('EZH2', 'Gene', (77, 81)) ('variants', 'Var', (24, 32)) ('JMJD1C', 'Gene', '221037', (96, 102)) ('JMJD1C', 'Gene', (96, 102)) ('KMT2B', 'Gene', '9757', (70, 75)) ('SETD2', 'Gene', '29072', (83, 88)) ('KDM2B', 'Gene', (104, 109)) ('KDM2B', 'Gene', '84678', (104, 109)) ('ATRX', 'Gene', (90, 94)) ('SETD2', 'Gene', (83, 88)) ('EZH2', 'Gene', '2146', (77, 81)) ('ATRX', 'Gene', '546', (90, 94)) 14993 30538672 Also, the investigators detected a somatic mutation in the main hotspot residue of the fibroblast growth factor receptor 1 gene, which is known to play a role in other cancers, such as glioblastomas. ('cancer', 'Phenotype', 'HP:0002664', (168, 174)) ('mutation', 'Var', (43, 51)) ('glioblastomas', 'Phenotype', 'HP:0012174', (185, 198)) ('fibroblast growth factor receptor 1', 'Gene', '2260', (87, 122)) ('cancers', 'Phenotype', 'HP:0002664', (168, 175)) ('glioblastomas', 'Disease', 'MESH:D005909', (185, 198)) ('cancers', 'Disease', (168, 175)) ('cancers', 'Disease', 'MESH:D009369', (168, 175)) ('glioblastomas', 'Disease', (185, 198)) ('fibroblast growth factor receptor 1', 'Gene', (87, 122)) 14996 30538672 Germline mutations in ATRX have been reported as a cause of X-linked alpha thalassemia mental retardation syndrome (ATRX syndrome). ('Germline mutations', 'Var', (0, 18)) ('ATRX', 'Gene', (22, 26)) ('ATRX', 'Gene', (116, 120)) ('X-linked alpha thalassemia mental retardation syndrome', 'Disease', 'MESH:C538258', (60, 114)) ('ATRX', 'Gene', '546', (116, 120)) ('ATRX', 'Gene', '546', (22, 26)) ('ATRX syndrome', 'Disease', (116, 129)) ('cause', 'Reg', (51, 56)) ('ATRX syndrome', 'Disease', 'MESH:C538258', (116, 129)) ('mental retardation', 'Phenotype', 'HP:0001249', (87, 105)) 14997 30538672 reported somatic ATRX mutations in two SDHB-related frozen tumors. ('ATRX', 'Gene', (17, 21)) ('SDHB', 'Gene', '6390', (39, 43)) ('ATRX', 'Gene', '546', (17, 21)) ('SDHB', 'Gene', (39, 43)) ('tumors', 'Disease', (59, 65)) ('tumors', 'Disease', 'MESH:D009369', (59, 65)) ('tumors', 'Phenotype', 'HP:0002664', (59, 65)) ('mutations', 'Var', (22, 31)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) 14998 30538672 They found somatic ATRX mutations in 12.6% of the samples, along with an alternative lengthening of telomeres seen on fluorescence in situ hybridization (FISH) and presenting with more aggressive disease. ('ATRX', 'Gene', '546', (19, 23)) ('aggressive disease', 'Disease', 'MESH:D001523', (185, 203)) ('lengthening', 'PosReg', (85, 96)) ('mutations', 'Var', (24, 33)) ('aggressive disease', 'Disease', (185, 203)) ('ATRX', 'Gene', (19, 23)) 14999 30538672 Later, the first case of an ATRX driver mutation was reported in a patient with a metastatic composite PCC-PGL, clinically with anemia, weight loss, and hepatic metastases. ('anemia', 'Disease', (128, 134)) ('mutation', 'Var', (40, 48)) ('hepatic metastases', 'Disease', 'MESH:D009362', (153, 171)) ('weight loss', 'Phenotype', 'HP:0001824', (136, 147)) ('anemia', 'Disease', 'MESH:D000740', (128, 134)) ('PCC', 'Gene', '1421', (103, 106)) ('ATRX', 'Gene', (28, 32)) ('anemia', 'Phenotype', 'HP:0001903', (128, 134)) ('weight loss', 'Disease', 'MESH:D015431', (136, 147)) ('hepatic metastases', 'Disease', (153, 171)) ('PCC', 'Gene', (103, 106)) ('ATRX', 'Gene', '546', (28, 32)) ('weight loss', 'Disease', (136, 147)) ('patient', 'Species', '9606', (67, 74)) 15001 30538672 Somatic mutations have been reported in association with co-existing mutations in the isocitrate dehydrogenase 1 and 2 (IDH 1/2) genes in both adult and pediatric patients with astrocytic tumors. ('mutations', 'Var', (69, 78)) ('patients', 'Species', '9606', (163, 171)) ('IDH 1/2', 'Gene', (120, 127)) ('tumors', 'Phenotype', 'HP:0002664', (188, 194)) ('astrocytic tumors', 'Disease', (177, 194)) ('tumor', 'Phenotype', 'HP:0002664', (188, 193)) ('astrocytic tumors', 'Disease', 'MESH:D001254', (177, 194)) ('IDH 1/2', 'Gene', '3417;3418', (120, 127)) 15002 30538672 In addition, ATRX may play a driver mutation role for sporadic PPGL and truncated ATRX could potentially play a synergistic role with SDHx in tumor initiation and might be a predisposition for a more aggressive disease. ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('ATRX', 'Gene', (82, 86)) ('aggressive disease', 'Disease', (200, 218)) ('play', 'Reg', (105, 109)) ('ATRX', 'Gene', (13, 17)) ('predisposition', 'Reg', (174, 188)) ('tumor initiation', 'Disease', 'MESH:D009369', (142, 158)) ('ATRX', 'Gene', '546', (82, 86)) ('ATRX', 'Gene', '546', (13, 17)) ('SDHx', 'Chemical', '-', (134, 138)) ('truncated', 'Var', (72, 81)) ('tumor initiation', 'Disease', (142, 158)) ('PPGL', 'Disease', (63, 67)) ('aggressive disease', 'Disease', 'MESH:D001523', (200, 218)) 15017 30538672 This phenotype is commonly seen in the cluster 1/ pseudohypoxia group, including both VHL and SDHx mutations. ('pseudohypoxia', 'Disease', (50, 63)) ('pseudohypoxia', 'Disease', 'None', (50, 63)) ('mutations', 'Var', (99, 108)) ('VHL', 'Gene', (86, 89)) ('SDHx', 'Chemical', '-', (94, 98)) ('VHL', 'Gene', '7428', (86, 89)) ('SDHx', 'Gene', (94, 98)) 15029 30538672 Elevated levels of DA/3MT together with NE have been reported in approximately 65% of patients with SDHx mutations, especially in SDHB. ('DA', 'Chemical', 'MESH:D004298', (19, 21)) ('SDHB', 'Gene', '6390', (130, 134)) ('mutations', 'Var', (105, 114)) ('SDHx', 'Gene', (100, 104)) ('SDHB', 'Gene', (130, 134)) ('SDHx', 'Chemical', '-', (100, 104)) ('patients', 'Species', '9606', (86, 94)) 15047 30538672 Regarding specific mutations, 68Ga-DOTATATE PET/CT resulted inferior in the evaluation of patients with polycythemia/PPGL: including both HIF2A and PHD1-related tumors:, FH or MAX mutations. ('polycythemia', 'Disease', 'MESH:D011086', (104, 116)) ('68Ga-DOTATATE', 'Chemical', '-', (30, 43)) ('tumors', 'Disease', (161, 167)) ('tumors', 'Phenotype', 'HP:0002664', (161, 167)) ('HIF2A', 'Gene', '2034', (138, 143)) ('mutations', 'Var', (19, 28)) ('polycythemia', 'Disease', (104, 116)) ('tumors', 'Disease', 'MESH:D009369', (161, 167)) ('FH', 'Gene', '2271', (170, 172)) ('tumor', 'Phenotype', 'HP:0002664', (161, 166)) ('PHD1', 'Gene', '112398', (148, 152)) ('HIF2A', 'Gene', (138, 143)) ('polycythemia', 'Phenotype', 'HP:0001901', (104, 116)) ('patients', 'Species', '9606', (90, 98)) ('PHD1', 'Gene', (148, 152)) 15048 30538672 In these patients: polycythemia associated to PPGL:, the combination of 18F-FDOPA PET/CT and 18F-FDA PET/CT resulted superior with a lesion-base detection rate of ~98%, vs. 35.3% for the 68Ga-DOTATATE PET/CT group (95% CI, 25.0-47.2%). ('18F-FDOPA', 'Chemical', '-', (72, 81)) ('patients', 'Species', '9606', (9, 17)) ('polycythemia', 'Phenotype', 'HP:0001901', (19, 31)) ('polycythemia', 'Disease', 'MESH:D011086', (19, 31)) ('lesion-base detection', 'MPA', (133, 154)) ('18F-FDA', 'Chemical', '-', (93, 100)) ('18F-FDA', 'Var', (93, 100)) ('polycythemia', 'Disease', (19, 31)) ('68Ga-DOTATATE', 'Chemical', '-', (187, 200)) 15055 30538672 Thus, the use of more than one functional imaging modality is recommended in the pediatric group and the use of both 68Ga-DOTATATE and 18F-FDG PET/CT is highly recommended in children with small lesions, when there is a high likelihood of metastatic disease and in those patients with SDHx mutations. ('metastatic disease', 'CPA', (239, 257)) ('68Ga-DOTATATE', 'Chemical', '-', (117, 130)) ('SDHx', 'Chemical', '-', (285, 289)) ('patients', 'Species', '9606', (271, 279)) ('SDHx', 'Gene', (285, 289)) ('mutations', 'Var', (290, 299)) ('children', 'Species', '9606', (175, 183)) ('18F-FDG', 'Chemical', 'MESH:D019788', (135, 142)) 15061 30538672 When comparing PRRT with 131I-MIBG in 22 patients with metastatic/progressive PPGL, PRRT showed increased PFS and tumor response rate, as well as increased event-free and overall survival (OS). ('PPGL', 'Disease', (78, 82)) ('increased', 'PosReg', (96, 105)) ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('131I-MIBG', 'Chemical', '-', (25, 34)) ('overall survival', 'CPA', (171, 187)) ('increased', 'PosReg', (146, 155)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('PFS', 'CPA', (106, 109)) ('PRRT', 'Var', (84, 88)) ('tumor', 'Disease', (114, 119)) ('patients', 'Species', '9606', (41, 49)) ('event-free', 'CPA', (156, 166)) 15063 30538672 A second-generation of SSTR2 antagonists that include DOTA-JR11 showed higher tumor uptake when combined with 68Ga-DOTA (1.3 times), or 68Ga-NODAGA (1.7 times) as compared with DOTA analogs. ('higher', 'PosReg', (71, 77)) ('SSTR2', 'Gene', '6752', (23, 28)) ('DOTA', 'Chemical', 'MESH:C071349', (177, 181)) ('DA', 'Chemical', 'MESH:D004298', (143, 145)) ('tumor', 'Disease', 'MESH:D009369', (78, 83)) ('DOTA-JR11', 'Chemical', '-', (54, 63)) ('SSTR2', 'Gene', (23, 28)) ('DOTA', 'Chemical', 'MESH:C071349', (115, 119)) ('tumor', 'Phenotype', 'HP:0002664', (78, 83)) ('tumor', 'Disease', (78, 83)) ('DOTA', 'Chemical', 'MESH:C071349', (54, 58)) ('DOTA-JR11', 'Var', (54, 63)) 15064 30538672 In the preclinical setting, DOTA-JR11 was superior to 177Lu in H69 cell lines, and in vivo therapy experiments achieved a higher uptake, median survival rate, and a longer delay in tumor growth. ('DOTA-JR11', 'Chemical', '-', (28, 37)) ('tumor', 'Disease', (181, 186)) ('higher', 'PosReg', (122, 128)) ('DOTA-JR11', 'Var', (28, 37)) ('uptake', 'MPA', (129, 135)) ('tumor', 'Disease', 'MESH:D009369', (181, 186)) ('177Lu', 'Chemical', 'MESH:C000615061', (54, 59)) ('median survival rate', 'CPA', (137, 157)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) ('H69', 'CellLine', 'CVCL:8121', (63, 66)) 15139 29977594 SDHx mutation. ('SDHx', 'Chemical', '-', (0, 4)) ('SDHx', 'Gene', (0, 4)) ('mutation', 'Var', (5, 13)) 15164 28881853 Actually, succinate dehydrogenase gene mutations and abnormal succinate accumulation have been observed in a battery of hereditary and sporadic malignancies. ('succinate', 'Chemical', 'MESH:D019802', (62, 71)) ('sporadic malignancies', 'Disease', (135, 156)) ('observed', 'Reg', (95, 103)) ('sporadic malignancies', 'Disease', 'MESH:D009369', (135, 156)) ('succinate dehydrogenase', 'Gene', (10, 33)) ('succinate dehydrogenase', 'Gene', '6390', (10, 33)) ('mutations', 'Var', (39, 48)) ('succinate accumulation', 'MPA', (62, 84)) ('succinate', 'Chemical', 'MESH:D019802', (10, 19)) 15170 28881853 Random mutation of SDH subunits by hereditary or acquired influences will contribute to the abnormal accumulation of succinate in the cytosol. ('succinate', 'Chemical', 'MESH:D019802', (117, 126)) ('SDH', 'Gene', (19, 22)) ('Random mutation', 'Var', (0, 15)) ('contribute', 'Reg', (74, 84)) ('accumulation of succinate in the cytosol', 'MPA', (101, 141)) ('SDH', 'Gene', '6390', (19, 22)) 15172 28881853 Mutations in SDH have been identified in specific cancers, both genetic and sporadic, such as familial paraganglioma/pheochromocytoma (PGL/PCC), renal carcinoma, thyroid cancer, ovarian cancer, neuroblastoma, gastrointestinal stromal tumor, and even testicular seminoma. ('familial paraganglioma/pheochromocytoma', 'Disease', (94, 133)) ('neuroblastoma', 'Disease', 'MESH:D009447', (194, 207)) ('identified', 'Reg', (27, 37)) ('cancers', 'Phenotype', 'HP:0002664', (50, 57)) ('cancers', 'Disease', (50, 57)) ('ovarian cancer', 'Disease', 'MESH:D010051', (178, 192)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (209, 239)) ('paraganglioma', 'Phenotype', 'HP:0002668', (103, 116)) ('cancer', 'Phenotype', 'HP:0002664', (170, 176)) ('cancer', 'Phenotype', 'HP:0002664', (50, 56)) ('PCC', 'Gene', (139, 142)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (209, 239)) ('PGL', 'Disease', (135, 138)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (117, 133)) ('thyroid cancer', 'Disease', 'MESH:D013964', (162, 176)) ('renal carcinoma', 'Disease', 'MESH:C538614', (145, 160)) ('Mutations', 'Var', (0, 9)) ('PCC', 'Gene', '1421', (139, 142)) ('ovarian cancer', 'Disease', (178, 192)) ('SDH', 'Gene', '6390', (13, 16)) ('gastrointestinal stromal tumor', 'Disease', (209, 239)) ('testicular seminoma', 'Disease', 'MESH:D018239', (250, 269)) ('tumor', 'Phenotype', 'HP:0002664', (234, 239)) ('renal carcinoma', 'Disease', (145, 160)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (145, 160)) ('carcinoma', 'Phenotype', 'HP:0030731', (151, 160)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (162, 176)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (178, 192)) ('cancers', 'Disease', 'MESH:D009369', (50, 57)) ('SDH', 'Gene', (13, 16)) ('neuroblastoma', 'Disease', (194, 207)) ('cancer', 'Phenotype', 'HP:0002664', (186, 192)) ('testicular seminoma', 'Phenotype', 'HP:0100617', (250, 269)) ('PGL', 'Disease', 'MESH:D010235', (135, 138)) ('testicular seminoma', 'Disease', (250, 269)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (194, 207)) ('familial paraganglioma/pheochromocytoma', 'Disease', 'MESH:C531777', (94, 133)) ('thyroid cancer', 'Disease', (162, 176)) 15185 28881853 In contrast, deletion of TRAP1 to prevent SDH inhibition delayed prostatic tumorigenesis. ('prostatic', 'Disease', (65, 74)) ('delayed', 'NegReg', (57, 64)) ('SDH', 'Gene', '6390', (42, 45)) ('tumor', 'Disease', 'MESH:D009369', (75, 80)) ('deletion', 'Var', (13, 21)) ('SDH', 'Gene', (42, 45)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('TRAP1', 'Gene', '10131', (25, 30)) ('TRAP1', 'Gene', (25, 30)) ('tumor', 'Disease', (75, 80)) 15192 28881853 Mutations of the gene encoding SDH result in the accumulation of succinate. ('SDH', 'Gene', '6390', (31, 34)) ('accumulation of succinate', 'MPA', (49, 74)) ('SDH', 'Gene', (31, 34)) ('Mutations', 'Var', (0, 9)) ('succinate', 'Chemical', 'MESH:D019802', (65, 74)) 15194 28881853 Although succinate is known as a classic "housekeeping gene", SDH mutations are commonly found in a series of neoplasms and different subunit mutations can lead to different types of tumors. ('mutations', 'Var', (66, 75)) ('SDH', 'Gene', '6390', (62, 65)) ('lead to', 'Reg', (156, 163)) ('succinate', 'Chemical', 'MESH:D019802', (9, 18)) ('tumors', 'Disease', 'MESH:D009369', (183, 189)) ('SDH', 'Gene', (62, 65)) ('tumor', 'Phenotype', 'HP:0002664', (183, 188)) ('neoplasm', 'Phenotype', 'HP:0002664', (110, 118)) ('neoplasms', 'Disease', 'MESH:D009369', (110, 119)) ('neoplasms', 'Disease', (110, 119)) ('tumors', 'Phenotype', 'HP:0002664', (183, 189)) ('tumors', 'Disease', (183, 189)) 15195 28881853 It is noteworthy that most mediastinal paragangliomas (PGLs) were related to SDHD gene mutations, whereas germline mutations of SDHB and SDHC play a minor role in sporadic head and neck paraganglioma. ('SDHB', 'Gene', (128, 132)) ('PGL', 'Disease', 'MESH:D010235', (55, 58)) ('SDHD', 'Gene', '6392', (77, 81)) ('neck paraganglioma', 'Disease', (181, 199)) ('SDHD', 'Gene', (77, 81)) ('paraganglioma', 'Phenotype', 'HP:0002668', (186, 199)) ('related', 'Reg', (66, 73)) ('paragangliomas', 'Disease', (39, 53)) ('paragangliomas', 'Disease', 'MESH:D010235', (39, 53)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (181, 199)) ('SDHB', 'Gene', '6390', (128, 132)) ('PGLs', 'Phenotype', 'HP:0002668', (55, 59)) ('PGL', 'Disease', (55, 58)) ('paragangliomas', 'Phenotype', 'HP:0002668', (39, 53)) ('mutations', 'Var', (87, 96)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (172, 199)) ('paraganglioma', 'Phenotype', 'HP:0002668', (39, 52)) 15196 28881853 To date, the genomics research on PGL/PCC has demonstrated that mutations of SDHD and SDHC cause PGL1 and PGL3, while PGL4, PGL5, and PGL2 are associated with mutations in the large subunit genes SDHB, SDHA and SDHAF2, respectively. ('PGL', 'Disease', 'MESH:D010235', (134, 137)) ('PGL', 'Disease', (97, 100)) ('PGL', 'Disease', (106, 109)) ('PCC', 'Gene', '1421', (38, 41)) ('PGL2', 'Gene', '54949', (134, 138)) ('PGL', 'Disease', 'MESH:D010235', (124, 127)) ('SDHB', 'Gene', '6390', (196, 200)) ('PGL3', 'Gene', (106, 110)) ('SDHC', 'Gene', (86, 90)) ('PGL5', 'Gene', (124, 128)) ('associated', 'Reg', (143, 153)) ('PGL', 'Disease', (118, 121)) ('PGL3', 'Gene', '6391', (106, 110)) ('PGL', 'Disease', (134, 137)) ('mutations', 'Var', (64, 73)) ('PGL5', 'Gene', '6389', (124, 128)) ('SDHB', 'Gene', (196, 200)) ('PGL', 'Disease', (124, 127)) ('PGL', 'Disease', 'MESH:D010235', (106, 109)) ('PGL', 'Disease', 'MESH:D010235', (34, 37)) ('PGL4', 'Gene', (118, 122)) ('SDHD', 'Gene', '6392', (77, 81)) ('PGL4', 'Gene', '6390', (118, 122)) ('PGL', 'Disease', 'MESH:D010235', (97, 100)) ('SDHA', 'Gene', (211, 215)) ('SDHAF2', 'Gene', '54949', (211, 217)) ('SDHA', 'Gene', (202, 206)) ('cause', 'Reg', (91, 96)) ('SDHA', 'Gene', '6389', (211, 215)) ('PGL2', 'Gene', (134, 138)) ('PGL', 'Disease', 'MESH:D010235', (118, 121)) ('SDHD', 'Gene', (77, 81)) ('PCC', 'Gene', (38, 41)) ('SDHA', 'Gene', '6389', (202, 206)) ('PGL', 'Disease', (34, 37)) ('SDHAF2', 'Gene', (211, 217)) 15197 28881853 In the case of renal cell carcinoma and papillary thyroid cancer, dysfunction of the SDHB domain is the greatest risk factor. ('papillary thyroid cancer', 'Disease', (40, 64)) ('papillary thyroid cancer', 'Disease', 'MESH:D000077273', (40, 64)) ('cancer', 'Phenotype', 'HP:0002664', (58, 64)) ('dysfunction', 'Var', (66, 77)) ('renal cell carcinoma', 'Disease', (15, 35)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (15, 35)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (40, 64)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (50, 64)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (15, 35)) ('carcinoma', 'Phenotype', 'HP:0030731', (26, 35)) 15198 28881853 Additionally, mutations in SDHA, SDHB, and SDHC have also been implicated in gastrointestinal stromal tumors. ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (77, 108)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (77, 108)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (77, 107)) ('SDHA', 'Gene', (27, 31)) ('SDHB', 'Gene', '6390', (33, 37)) ('tumors', 'Phenotype', 'HP:0002664', (102, 108)) ('gastrointestinal stromal tumors', 'Disease', (77, 108)) ('SDHB', 'Gene', (33, 37)) ('SDHA', 'Gene', '6389', (27, 31)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('mutations', 'Var', (14, 23)) ('implicated', 'Reg', (63, 73)) ('SDHC', 'Gene', (43, 47)) 15199 28881853 As previously described, SDH mutations have been observed in some hereditary and non-genetic tumors, such as PGL/PCC, thyroid cancer and ovarian cancer. ('cancer', 'Phenotype', 'HP:0002664', (145, 151)) ('observed', 'Reg', (49, 57)) ('thyroid cancer', 'Disease', 'MESH:D013964', (118, 132)) ('PCC', 'Gene', (113, 116)) ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('ovarian cancer', 'Disease', 'MESH:D010051', (137, 151)) ('SDH', 'Gene', (25, 28)) ('PGL', 'Disease', (109, 112)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (118, 132)) ('tumors', 'Phenotype', 'HP:0002664', (93, 99)) ('PCC', 'Gene', '1421', (113, 116)) ('cancer', 'Phenotype', 'HP:0002664', (126, 132)) ('mutations', 'Var', (29, 38)) ('ovarian cancer', 'Disease', (137, 151)) ('tumors', 'Disease', (93, 99)) ('thyroid cancer', 'Disease', (118, 132)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (137, 151)) ('tumors', 'Disease', 'MESH:D009369', (93, 99)) ('PGL', 'Disease', 'MESH:D010235', (109, 112)) ('SDH', 'Gene', '6390', (25, 28)) 15200 28881853 As it is a key enzyme involved in the TCA cycle, both inactivity and dysfunction of SDH can lead to succinate accumulation and low level of fumarate. ('low level of fumarate', 'MPA', (127, 148)) ('succinate', 'Chemical', 'MESH:D019802', (100, 109)) ('lead to', 'Reg', (92, 99)) ('fumarate', 'Chemical', 'MESH:D005650', (140, 148)) ('dysfunction', 'Var', (69, 80)) ('inactivity', 'Var', (54, 64)) ('TCA', 'Chemical', 'MESH:D014238', (38, 41)) ('SDH', 'Gene', '6390', (84, 87)) ('succinate accumulation', 'MPA', (100, 122)) ('SDH', 'Gene', (84, 87)) 15202 28881853 Mitochondrial respiratory disorder resulting from enzyme dysfunction has been shown to be directly responsible for the initiation of cancer, while mutations of SDH should bear most of the responsibility. ('SDH', 'Gene', (160, 163)) ('mutations', 'Var', (147, 156)) ('Mitochondrial respiratory disorder', 'Disease', (0, 34)) ('responsible', 'Reg', (99, 110)) ('initiation of cancer', 'Disease', (119, 139)) ('Mitochondrial respiratory disorder', 'Disease', 'MESH:D012131', (0, 34)) ('initiation of cancer', 'Disease', 'MESH:D009369', (119, 139)) ('SDH', 'Gene', '6390', (160, 163)) ('enzyme dysfunction', 'Disease', 'MESH:D008661', (50, 68)) ('enzyme dysfunction', 'Disease', (50, 68)) ('cancer', 'Phenotype', 'HP:0002664', (133, 139)) 15214 28881853 In summary, the involvement of SDH mutations, glyoxylate shunt and the tumor-associated inflammatory response can indeed contribute to high concentrations of succinate in cancer (Figure 1). ('SDH', 'Gene', '6390', (31, 34)) ('cancer', 'Disease', 'MESH:D009369', (171, 177)) ('involvement', 'Reg', (16, 27)) ('glyoxylate', 'Chemical', 'MESH:C031150', (46, 56)) ('tumor', 'Disease', 'MESH:D009369', (71, 76)) ('cancer', 'Disease', (171, 177)) ('SDH', 'Gene', (31, 34)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('high concentrations of succinate', 'MPA', (135, 167)) ('contribute', 'Reg', (121, 131)) ('succinate', 'Chemical', 'MESH:D019802', (158, 167)) ('tumor', 'Disease', (71, 76)) ('cancer', 'Phenotype', 'HP:0002664', (171, 177)) ('mutations', 'Var', (35, 44)) 15221 28881853 A concise summary, all these adjustments resulting in succinate accumulation in cancer cells will conversely facilitate cellular transformation and tumor evolvement. ('adjustments', 'Var', (29, 40)) ('cancer', 'Disease', (80, 86)) ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('succinate accumulation', 'MPA', (54, 76)) ('succinate', 'Chemical', 'MESH:D019802', (54, 63)) ('cancer', 'Phenotype', 'HP:0002664', (80, 86)) ('tumor', 'Disease', (148, 153)) ('resulting in', 'Reg', (41, 53)) ('cellular transformation', 'CPA', (120, 143)) ('cancer', 'Disease', 'MESH:D009369', (80, 86)) ('tumor', 'Disease', 'MESH:D009369', (148, 153)) ('facilitate', 'PosReg', (109, 119)) 15227 28881853 Abnormally accumulated succinate in mitochondria which causes by inherited or somatic mutations in random subunits of SDH will be freely transported to the cytosol via the dicarboxylic acid translocator in the mitochondrial inner membrane and the voltage-dependent anion channel (VDAC/porin) in the mitochondrial outer membrane. ('mutations', 'Var', (86, 95)) ('dicarboxylic acid', 'Chemical', 'MESH:D003998', (172, 189)) ('Abnormally accumulated succinate', 'Phenotype', 'HP:0020149', (0, 32)) ('SDH', 'Gene', '6390', (118, 121)) ('succinate', 'Chemical', 'MESH:D019802', (23, 32)) ('porin', 'Gene', (285, 290)) ('porin', 'Gene', '7416', (285, 290)) ('causes', 'Reg', (55, 61)) ('SDH', 'Gene', (118, 121)) 15235 28881853 Subsequent studies showed that any defects in SDHB, SDHC, or SDHD, but not SDHA, will disrupt complex II enzymatic activity in mitochondria. ('SDHA', 'Gene', (75, 79)) ('SDHB', 'Gene', '6390', (46, 50)) ('disrupt', 'NegReg', (86, 93)) ('SDHB', 'Gene', (46, 50)) ('SDHD', 'Gene', '6392', (61, 65)) ('SDHC', 'Gene', (52, 56)) ('complex II enzymatic activity in mitochondria', 'MPA', (94, 139)) ('SDHD', 'Gene', (61, 65)) ('SDHA', 'Gene', '6389', (75, 79)) ('defects', 'Var', (35, 42)) 15236 28881853 Dysfunction of mitochondria stemming from TCA cycle enzyme inactivation leads to ROS overproduction directly and indirectly. ('inactivation', 'NegReg', (59, 71)) ('Dysfunction', 'Var', (0, 11)) ('ROS', 'Chemical', 'MESH:D017382', (81, 84)) ('TCA', 'Chemical', 'MESH:D014238', (42, 45)) ('overproduction', 'PosReg', (85, 99)) ('ROS', 'Protein', (81, 84)) 15237 28881853 Once elevated in the cytosol, ROS can oxidize amino acid residues within fatty acids and proteins, and cause irreversible DNA damage and genomic instability, leading to carcinogenesis and tumorigenesis. ('tumor', 'Disease', (188, 193)) ('oxidize amino acid residues', 'MPA', (38, 65)) ('carcinogenesis', 'Disease', (169, 183)) ('fatty acids', 'Chemical', 'MESH:D005227', (73, 84)) ('DNA damage', 'MPA', (122, 132)) ('leading to', 'Reg', (158, 168)) ('tumor', 'Disease', 'MESH:D009369', (188, 193)) ('cause', 'Reg', (103, 108)) ('carcinogenesis', 'Disease', 'MESH:D063646', (169, 183)) ('tumor', 'Phenotype', 'HP:0002664', (188, 193)) ('genomic instability', 'CPA', (137, 156)) ('ROS', 'Var', (30, 33)) ('ROS', 'Chemical', 'MESH:D017382', (30, 33)) 15238 28881853 In addition to the oxidative stress pathway, ROS production resulting from SDH defects can also act as signal transduction messengers to stabilize HIF-1alpha through oxidizing Fe2+ to Fe3+, as Fe2+ is a critical cofactor of PHD. ('Fe2+', 'Chemical', 'MESH:C038178', (176, 180)) ('Fe2+', 'Chemical', 'MESH:C038178', (193, 197)) ('oxidative stress', 'Phenotype', 'HP:0025464', (19, 35)) ('defects', 'Var', (79, 86)) ('ROS', 'Chemical', 'MESH:D017382', (45, 48)) ('HIF-1alpha', 'Gene', '3091', (147, 157)) ('PHD', 'Disease', 'MESH:D011547', (224, 227)) ('ROS production', 'MPA', (45, 59)) ('SDH', 'Gene', '6390', (75, 78)) ('PHD', 'Disease', (224, 227)) ('stabilize', 'MPA', (137, 146)) ('Fe3+', 'Chemical', '-', (184, 188)) ('SDH', 'Gene', (75, 78)) ('HIF-1alpha', 'Gene', (147, 157)) ('oxidizing Fe2+ to Fe3+', 'MPA', (166, 188)) 15258 28881853 Although the evidence of the relationship between SDH mutation and NRF2 activation is insufficient, SDH inhibition is more likely to induce NRF2 production, and this may depend on increased ROS production. ('mutation', 'Var', (54, 62)) ('inhibition', 'NegReg', (104, 114)) ('SDH', 'Gene', '6390', (100, 103)) ('induce', 'PosReg', (133, 139)) ('NRF2', 'Gene', '4780', (67, 71)) ('increased ROS production', 'Phenotype', 'HP:0025464', (180, 204)) ('SDH', 'Gene', (100, 103)) ('SDH', 'Gene', '6390', (50, 53)) ('insufficient', 'Disease', 'MESH:D000309', (86, 98)) ('NRF2', 'Gene', (67, 71)) ('insufficient', 'Disease', (86, 98)) ('NRF2', 'Gene', '4780', (140, 144)) ('ROS', 'Chemical', 'MESH:D017382', (190, 193)) ('SDH', 'Gene', (50, 53)) ('NRF2', 'Gene', (140, 144)) 15261 28881853 Taken together, accumulation of succinate in the tumor microenvironment finally enhances the tumor-associated inflammation. ('tumor', 'Disease', 'MESH:D009369', (49, 54)) ('enhances', 'PosReg', (80, 88)) ('inflammation', 'Disease', (110, 122)) ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('tumor', 'Disease', (93, 98)) ('tumor', 'Disease', (49, 54)) ('succinate', 'Chemical', 'MESH:D019802', (32, 41)) ('accumulation', 'Var', (16, 28)) ('inflammation', 'Disease', 'MESH:D007249', (110, 122)) ('tumor', 'Disease', 'MESH:D009369', (93, 98)) 15272 28881853 While SDH mutation is generally acknowledged as the culprit for the high level of succinate, the comprehensive mechanisms that contribute to its accumulation remain mysterious. ('high level of succinate', 'Phenotype', 'HP:0020149', (68, 91)) ('SDH', 'Gene', (6, 9)) ('mutation', 'Var', (10, 18)) ('succinate', 'Chemical', 'MESH:D019802', (82, 91)) ('SDH', 'Gene', '6390', (6, 9)) 15396 27873108 MCT is caused by mutations in the RET proto-oncogene, and may be sporadic or inherited in an autosomal dominant pattern in approximately 25% of cases as part of multiple endocrine neoplasia (MEN2A and MEN2B) or familial MTC. ('RET', 'Gene', '5979', (34, 37)) ('multiple endocrine neoplasia', 'Disease', (161, 189)) ('MCT', 'Disease', (0, 3)) ('familial MTC', 'Disease', (211, 223)) ('neoplasia', 'Phenotype', 'HP:0002664', (180, 189)) ('RET', 'Gene', (34, 37)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (170, 189)) ('MEN2A', 'Gene', '5979', (191, 196)) ('MEN2B', 'Gene', (201, 206)) ('caused by', 'Reg', (7, 16)) ('MEN2B', 'Gene', '5979', (201, 206)) ('mutations', 'Var', (17, 26)) ('MEN2A', 'Gene', (191, 196)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (161, 189)) 15415 27873108 Endogenous Cushing syndrome is the result of chronic glucocorticoid excess from either an ACTH-secreting pituitary tumor, cortisol producing adenoma, adrenal hyperplasia, or ectopic production of ACTH and/or CRH from a neuroendocrine tumor. ('adrenal hyperplasia', 'Disease', (150, 169)) ('CRH', 'Gene', (208, 211)) ('neuroendocrine tumor', 'Disease', (219, 239)) ('ACTH', 'Gene', '5443', (196, 200)) ('ACTH', 'Gene', (90, 94)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (219, 239)) ('Cushing syndrome', 'Disease', 'MESH:D003480', (11, 27)) ('ectopic', 'Var', (174, 181)) ('pituitary tumor', 'Disease', 'MESH:D010911', (105, 120)) ('adenoma', 'Disease', (141, 148)) ('Cushing syndrome', 'Phenotype', 'HP:0003118', (11, 27)) ('adrenal hyperplasia', 'Disease', 'MESH:D000312', (150, 169)) ('tumor', 'Phenotype', 'HP:0002664', (234, 239)) ('pituitary tumor', 'Disease', (105, 120)) ('Cushing syndrome', 'Disease', (11, 27)) ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('neuroendocrine tumor', 'Disease', 'MESH:D018358', (219, 239)) ('adenoma', 'Disease', 'MESH:D000236', (141, 148)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (224, 239)) ('ACTH', 'Gene', (196, 200)) ('glucocorticoid', 'MPA', (53, 67)) ('CRH', 'Gene', '1392', (208, 211)) ('adrenal hyperplasia', 'Phenotype', 'HP:0008221', (150, 169)) ('ACTH', 'Gene', '5443', (90, 94)) ('glucocorticoid excess', 'Phenotype', 'HP:0003118', (53, 74)) ('ACTH-secreting pituitary tumor', 'Phenotype', 'HP:0008291', (90, 120)) 15421 27873108 More than two thirds of perimenopausal women experience hot flashes which may represent a marker of underlying cardiovascular disease; a recent study examined the role of genetic variation in the tachykinin receptor 3 (TACR3) as a contributor to hot flashes. ('cardiovascular disease', 'Disease', 'MESH:D002318', (111, 133)) ('TACR3', 'Gene', '6870', (219, 224)) ('men', 'Species', '9606', (28, 31)) ('women', 'Species', '9606', (39, 44)) ('cardiovascular disease', 'Disease', (111, 133)) ('hot flashes', 'Phenotype', 'HP:0031217', (246, 257)) ('tachykinin receptor 3', 'Gene', (196, 217)) ('hot flashes', 'Phenotype', 'HP:0031217', (56, 67)) ('cardiovascular disease', 'Phenotype', 'HP:0001626', (111, 133)) ('tachykinin receptor 3', 'Gene', '6870', (196, 217)) ('genetic variation', 'Var', (171, 188)) ('TACR3', 'Gene', (219, 224)) ('men', 'Species', '9606', (41, 44)) ('amine', 'Chemical', 'MESH:D000588', (152, 157)) 15494 25929929 PVS does not usually decrease the cardiac output or trigger cyclical blood pressure fluctuations itself, but it instead causes persistent hypotension that is difficult to correct or triggers high blood pressure. ('hypotension', 'Disease', (138, 149)) ('causes', 'Reg', (120, 126)) ('hypotension', 'Phenotype', 'HP:0002615', (138, 149)) ('PVS', 'Var', (0, 3)) ('triggers', 'Reg', (182, 190)) ('high blood pressure', 'Phenotype', 'HP:0000822', (191, 210)) ('cyclical blood pressure', 'Phenotype', 'HP:0000875', (60, 83)) ('hypotension', 'Disease', 'MESH:D007022', (138, 149)) ('cardiac', 'MPA', (34, 41)) 15514 25874239 The combination therapy with I-131 MIBG and other modalities such as nonmyeloablative chemotherapy and myeloablative chemotherapy with HCT improved the therapeutic response in patients with refractory or relapsed neuroblastoma. ('patients', 'Species', '9606', (176, 184)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (213, 226)) ('I-131 MIBG', 'Chemical', '-', (29, 39)) ('neuroblastoma', 'Disease', (213, 226)) ('improved', 'PosReg', (139, 147)) ('refractory', 'Disease', (190, 200)) ('neuroblastoma', 'Disease', 'MESH:D009447', (213, 226)) ('therapeutic', 'MPA', (152, 163)) ('I-131', 'Var', (29, 34)) ('MIBG', 'Gene', (35, 39)) 15533 25874239 The uptake of MIBG in neuroendocrine cells such as normal adrenomedullary cells, neuroblastoma, and pheochromocytoma cells is similar to the uptake of NE. ('pheochromocytoma', 'Disease', 'MESH:D010673', (100, 116)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (100, 116)) ('MIBG', 'Var', (14, 18)) ('MIBG', 'Chemical', 'MESH:D019797', (14, 18)) ('neuroblastoma', 'Disease', 'MESH:D009447', (81, 94)) ('neuroblastoma', 'Disease', (81, 94)) ('pheochromocytoma', 'Disease', (100, 116)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (81, 94)) 15547 25874239 Relative contraindications are provided as uncontrollable medical risk and urinary incontinence by isolation and decreased renal function by glomerular filtration rate (GFR) less than 30 mL/min. ('less than 30', 'Var', (174, 186)) ('urinary incontinence', 'Disease', 'MESH:D014549', (75, 95)) ('urinary incontinence', 'Disease', (75, 95)) ('urinary incontinence', 'Phenotype', 'HP:0000020', (75, 95)) ('decreased renal function', 'Disease', (113, 137)) ('decreased renal function', 'Disease', 'MESH:D051437', (113, 137)) 15549 25874239 Typical acute toxicities usually seen within two or three days after I-131 MIBG administration are nausea and vomiting. ('toxicities', 'Disease', (14, 24)) ('nausea', 'Disease', 'MESH:D009325', (99, 105)) ('I-131 MIBG', 'Chemical', '-', (69, 79)) ('nausea and vomiting', 'Phenotype', 'HP:0002017', (99, 118)) ('MIBG', 'Gene', (75, 79)) ('I-131', 'Var', (69, 74)) ('toxicities', 'Disease', 'MESH:D064420', (14, 24)) ('vomiting', 'Phenotype', 'HP:0002013', (110, 118)) ('vomiting', 'Disease', (110, 118)) ('nausea', 'Phenotype', 'HP:0002018', (99, 105)) ('nausea', 'Disease', (99, 105)) ('vomiting', 'Disease', 'MESH:D014839', (110, 118)) 15554 25874239 Table 1 shows acute toxicities in 40 patients with refractory or relapsed neuroblastoma treated with I-131 MIBG at a mean dose of 10.5 mCi/kg in our institution. ('toxicities', 'Disease', 'MESH:D064420', (20, 30)) ('patients', 'Species', '9606', (37, 45)) ('neuroblastoma', 'Disease', 'MESH:D009447', (74, 87)) ('neuroblastoma', 'Disease', (74, 87)) ('I-131 MIBG', 'Chemical', '-', (101, 111)) ('I-131', 'Var', (101, 106)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (74, 87)) ('toxicities', 'Disease', (20, 30)) 15567 25874239 Venoocclusive liver disease (VOLD) is an important early complication in patients received I-131 MIBG therapy followed by myeloablative chemotherapy and HCT. ('MIBG', 'Gene', (97, 101)) ('I-131', 'Var', (91, 96)) ('Venoocclusive liver disease', 'Disease', 'MESH:D011668', (0, 27)) ('VOLD', 'Disease', (29, 33)) ('Venoocclusive liver disease', 'Disease', (0, 27)) ('I-131 MIBG', 'Chemical', '-', (91, 101)) ('VOLD', 'Disease', 'None', (29, 33)) ('patients', 'Species', '9606', (73, 81)) ('liver disease', 'Phenotype', 'HP:0001392', (14, 27)) 15583 25874239 Since the first I-131 MIBG therapy for neuroblastoma were reported in 1986, many monotherapy trials with I-131 MIBG for refractory or relapsed neuroblastoma were reported and obtained objective responses (partial or complete response) in 0 to 66%. ('neuroblastoma', 'Disease', 'MESH:D009447', (39, 52)) ('I-131 MIBG', 'Chemical', '-', (16, 26)) ('neuroblastoma', 'Disease', 'MESH:D009447', (143, 156)) ('neuroblastoma', 'Disease', (39, 52)) ('I-131 MIBG', 'Chemical', '-', (105, 115)) ('neuroblastoma', 'Disease', (143, 156)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (39, 52)) ('I-131', 'Var', (105, 110)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (143, 156)) 15586 25874239 For instance, an Italian group treated 42 patients with refractory or relapsed neuroblastoma with 75 to 162 mCi of I-131 MIBG per each therapy. ('neuroblastoma', 'Phenotype', 'HP:0003006', (79, 92)) ('I-131 MIBG', 'Chemical', '-', (115, 125)) ('neuroblastoma', 'Disease', 'MESH:D009447', (79, 92)) ('I-131', 'Var', (115, 120)) ('neuroblastoma', 'Disease', (79, 92)) ('patients', 'Species', '9606', (42, 50)) ('MIBG', 'Gene', (121, 125)) 15588 25874239 In the phase II study by a French group, 26 patients with refractory or relapsed neuroblastoma were treated with 30 to 108 mCi of I-131 MIBG per each therapy. ('I-131', 'Var', (130, 135)) ('patients', 'Species', '9606', (44, 52)) ('neuroblastoma', 'Disease', 'MESH:D009447', (81, 94)) ('refractory', 'Disease', (58, 68)) ('neuroblastoma', 'Disease', (81, 94)) ('I-131 MIBG', 'Chemical', '-', (130, 140)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (81, 94)) 15590 25874239 In a recent report from Israel, I-131 MIBG therapy at a dose of 5 mCi/kg (maximum dose 150 mCi) per each therapy acquired pain palliation in 90% of the first therapies and 87.5% of the second therapies in 10 symptomatic patients with refractory neuroblastoma. ('neuroblastoma', 'Disease', 'MESH:D009447', (245, 258)) ('neuroblastoma', 'Disease', (245, 258)) ('I-131 MIBG', 'Chemical', '-', (32, 42)) ('patients', 'Species', '9606', (220, 228)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (245, 258)) ('pain', 'Phenotype', 'HP:0012531', (122, 126)) ('I-131', 'Var', (32, 37)) ('pain', 'Disease', 'MESH:D010146', (122, 126)) ('pain', 'Disease', (122, 126)) 15591 25874239 Lower doses of I-131 MIBG obtain a few objective responses, whereas can achieve high-probability pain reduction (Figure 1). ('pain', 'Phenotype', 'HP:0012531', (97, 101)) ('pain', 'Disease', 'MESH:D010146', (97, 101)) ('I-131 MIBG', 'Chemical', '-', (15, 25)) ('pain', 'Disease', (97, 101)) ('MIBG', 'Gene', (21, 25)) ('reduction', 'NegReg', (102, 111)) ('I-131', 'Var', (15, 20)) 15592 25874239 In a phase I study from UCSF, 30 patients with refractory or relapsed neuroblastoma were treated with I-131 MIBG at escalating doses of 3 to 18 mCi/kg per each therapy. ('I-131', 'Var', (102, 107)) ('neuroblastoma', 'Disease', (70, 83)) ('patients', 'Species', '9606', (33, 41)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (70, 83)) ('refractory', 'Disease', (47, 57)) ('I-131 MIBG', 'Chemical', '-', (102, 112)) ('MIBG', 'Gene', (108, 112)) ('neuroblastoma', 'Disease', 'MESH:D009447', (70, 83)) 15610 25874239 On the basis of I-131 MIBG monotherapeutic results, some groups tried the combination therapy with I-131 MIBG and chemotherapy agents act as radiosensitizers for refractory or relapsed neuroblastoma. ('I-131', 'Var', (99, 104)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (185, 198)) ('I-131 MIBG', 'Chemical', '-', (16, 26)) ('refractory', 'Disease', (162, 172)) ('neuroblastoma', 'Disease', 'MESH:D009447', (185, 198)) ('I-131 MIBG', 'Chemical', '-', (99, 109)) ('neuroblastoma', 'Disease', (185, 198)) 15611 25874239 In a report from Italy, 4 patients with refractory or relapsed neuroblastoma were administered I-131 MIBG in combination with cisplatin. ('neuroblastoma', 'Phenotype', 'HP:0003006', (63, 76)) ('I-131', 'Var', (95, 100)) ('cisplatin', 'Chemical', 'MESH:D002945', (126, 135)) ('patients', 'Species', '9606', (26, 34)) ('neuroblastoma', 'Disease', 'MESH:D009447', (63, 76)) ('I-131 MIBG', 'Chemical', '-', (95, 105)) ('neuroblastoma', 'Disease', (63, 76)) 15613 25874239 In addition, the same group treated 16 patients with 200 mCi I-131 MIBG plus cisplatin and cyclophosphamide with or without etoposide and vincristine. ('etoposide', 'Chemical', 'MESH:D005047', (124, 133)) ('patients', 'Species', '9606', (39, 47)) ('MIBG', 'Gene', (67, 71)) ('cyclophosphamide', 'Chemical', 'MESH:D003520', (91, 107)) ('I-131 MIBG', 'Chemical', '-', (61, 71)) ('vincristine', 'Chemical', 'MESH:D014750', (138, 149)) ('cisplatin', 'Chemical', 'MESH:D002945', (77, 86)) ('I-131', 'Var', (61, 66)) 15620 25874239 In a phase I study from the NANT consortium, 24 patients with refractory or relapsed neuroblastoma treated with irinotecan which is another topoisomerase I inhibitor, vincristine, and I-131 MIBG at escalating doses of 8 to 18 mCi/kg. ('MIBG', 'Gene', (190, 194)) ('vincristine', 'Chemical', 'MESH:D014750', (167, 178)) ('irinotecan', 'Chemical', 'MESH:D000077146', (112, 122)) ('I-131 MIBG', 'Chemical', '-', (184, 194)) ('neuroblastoma', 'Disease', 'MESH:D009447', (85, 98)) ('neuroblastoma', 'Disease', (85, 98)) ('I-131', 'Var', (184, 189)) ('patients', 'Species', '9606', (48, 56)) ('NANT', 'Chemical', '-', (28, 32)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (85, 98)) 15623 25874239 A phase I study with a combination of I-131 MIBG and vorinostat for refractory or relapsed neuroblastoma is now examined by the NANT consortium (N2007-03). ('neuroblastoma', 'Disease', 'MESH:D009447', (91, 104)) ('I-131 MIBG', 'Var', (38, 48)) ('neuroblastoma', 'Disease', (91, 104)) ('vorinostat', 'Chemical', 'MESH:D000077337', (53, 63)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (91, 104)) ('I-131 MIBG', 'Chemical', '-', (38, 48)) ('NANT', 'Chemical', '-', (128, 132)) 15629 25874239 In a phase I dose escalation study by the NANT consortium, 24 patients with refractory neuroblastoma were treated with I-131 MIBG at escalating doses of 12 to 18 mCi/kg on day -21 along with CEM on day -7 to day -4. ('MIBG', 'Gene', (125, 129)) ('I-131', 'Var', (119, 124)) ('CEM', 'Chemical', '-', (191, 194)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (87, 100)) ('neuroblastoma', 'Disease', 'MESH:D009447', (87, 100)) ('I-131 MIBG', 'Chemical', '-', (119, 129)) ('patients', 'Species', '9606', (62, 70)) ('NANT', 'Chemical', '-', (42, 46)) ('neuroblastoma', 'Disease', (87, 100)) 15635 25874239 Eight patients with refractory neuroblastoma were treated with 18 mCi/kg I-131 MIBG on day -13 and auto-HCT on day 0. ('neuroblastoma', 'Phenotype', 'HP:0003006', (31, 44)) ('I-131 MIBG', 'Chemical', '-', (73, 83)) ('I-131', 'Var', (73, 78)) ('patients', 'Species', '9606', (6, 14)) ('neuroblastoma', 'Disease', 'MESH:D009447', (31, 44)) ('neuroblastoma', 'Disease', (31, 44)) 15642 25874239 Two patients with relapsed neuroblastoma treated with I-131 MIBG and allo-HCT were reported in case reports from Japan. ('I-131', 'Var', (54, 59)) ('neuroblastoma', 'Disease', (27, 40)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (27, 40)) ('I-131 MIBG', 'Chemical', '-', (54, 64)) ('patients', 'Species', '9606', (4, 12)) ('neuroblastoma', 'Disease', 'MESH:D009447', (27, 40)) 15649 25874239 Exposure of the neuroblastoma cells to hyperbaric oxygen (HBO) enhanced the effects of I-131 MIBG on decreasing cell proliferation and energy metabolism and increasing lipid peroxidation. ('cell proliferation', 'CPA', (112, 130)) ('decreasing', 'NegReg', (101, 111)) ('lipid', 'Chemical', 'MESH:D008055', (168, 173)) ('neuroblastoma', 'Disease', 'MESH:D009447', (16, 29)) ('I-131 MIBG', 'Chemical', '-', (87, 97)) ('I-131', 'Var', (87, 92)) ('increasing', 'PosReg', (157, 167)) ('neuroblastoma', 'Disease', (16, 29)) ('lipid peroxidation', 'MPA', (168, 186)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (16, 29)) ('oxygen', 'Chemical', 'MESH:D010100', (50, 56)) ('energy metabolism', 'MPA', (135, 152)) ('MIBG', 'Gene', (93, 97)) 15650 25874239 These effects may provide the positive effects on neuroblastoma patients treated with the combination of I-131 MIBG and HBO. ('neuroblastoma', 'Disease', 'MESH:D009447', (50, 63)) ('patients', 'Species', '9606', (64, 72)) ('positive', 'PosReg', (30, 38)) ('neuroblastoma', 'Disease', (50, 63)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (50, 63)) ('I-131 MIBG', 'Chemical', '-', (105, 115)) ('I-131', 'Var', (105, 110)) 15674 25874239 A pilot study of intensive induction chemotherapy and I-131 MIBG undergoing HCT for newly diagnosed advanced neuroblastoma by the Children's Oncology Group is currently recruiting participants. ('Children', 'Species', '9606', (130, 138)) ('Oncology', 'Phenotype', 'HP:0002664', (141, 149)) ('I-131 MIBG', 'Var', (54, 64)) ('neuroblastoma', 'Disease', 'MESH:D009447', (109, 122)) ('I-131 MIBG', 'Chemical', '-', (54, 64)) ('neuroblastoma', 'Disease', (109, 122)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (109, 122)) ('participants', 'Species', '9606', (180, 192)) 15675 25874239 Recently, a Dutch group reported the result of I-131 MIBG therapy in patients with unresectable localized neuroblastoma. ('localized neuroblastoma', 'Phenotype', 'HP:0006768', (96, 119)) ('localized neuroblastoma', 'Disease', 'MESH:D009447', (96, 119)) ('I-131 MIBG', 'Chemical', '-', (47, 57)) ('patients', 'Species', '9606', (69, 77)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (106, 119)) ('localized neuroblastoma', 'Disease', (96, 119)) ('I-131', 'Var', (47, 52)) 15676 25874239 Twenty-one patients with any organ dysfunctions were treated with I-131 MIBG for unresectable localized neuroblastoma. ('MIBG', 'Gene', (72, 76)) ('dysfunctions', 'Disease', 'MESH:D006331', (35, 47)) ('dysfunctions', 'Disease', (35, 47)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (104, 117)) ('localized neuroblastoma', 'Phenotype', 'HP:0006768', (94, 117)) ('localized neuroblastoma', 'Disease', 'MESH:D009447', (94, 117)) ('I-131', 'Var', (66, 71)) ('patients', 'Species', '9606', (11, 19)) ('localized neuroblastoma', 'Disease', (94, 117)) ('I-131 MIBG', 'Chemical', '-', (66, 76)) 15688 25874239 Dose-limiting toxicity was not observed in all of 3, 3, and 6 patients treated with 12, 15, and 18 mCi/kg I-131 MIBG. ('I-131', 'Var', (106, 111)) ('toxicity', 'Disease', 'MESH:D064420', (14, 22)) ('patients', 'Species', '9606', (62, 70)) ('toxicity', 'Disease', (14, 22)) ('I-131 MIBG', 'Chemical', '-', (106, 116)) 15694 25874239 In phases I and II trials by the University of Michigan, 10 patients with refractory or relapsed neuroblastoma received I-125 MIBG therapy at a dose of 224 to 814 mCi. ('I-125', 'Var', (120, 125)) ('refractory', 'Disease', (74, 84)) ('neuroblastoma', 'Disease', (97, 110)) ('I-125 MIBG', 'Chemical', '-', (120, 130)) ('patients', 'Species', '9606', (60, 68)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (97, 110)) ('neuroblastoma', 'Disease', 'MESH:D009447', (97, 110)) 15696 25874239 Further studies are needed, such as for macroscopic disease with a combination with I-125 MIBG and I-131 MIBG and for microscopic disease with I-125 MIBG. ('I-125', 'Var', (143, 148)) ('I-131 MIBG', 'Var', (99, 109)) ('I-125 MIBG', 'Chemical', '-', (143, 153)) ('microscopic', 'Disease', (118, 129)) ('macroscopic disease', 'Disease', (40, 59)) ('I-125', 'Var', (84, 89)) ('I-125 MIBG', 'Chemical', '-', (84, 94)) ('I-131 MIBG', 'Chemical', '-', (99, 109)) 15700 25874239 This pilot study demonstrated the regional administration of At-211-labeled antitenascin antibody was feasible, safe, and effective for malignant brain tumors. ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('malignant brain tumors', 'Disease', (136, 158)) ('malignant brain tumors', 'Disease', 'MESH:D001932', (136, 158)) ('antitenascin', 'Protein', (76, 88)) ('At-211-labeled', 'Var', (61, 75)) ('At-211', 'Chemical', 'MESH:C000615146', (61, 67)) ('brain tumors', 'Phenotype', 'HP:0030692', (146, 158)) ('tumors', 'Phenotype', 'HP:0002664', (152, 158)) 15703 25874239 A number of studies indicate the efficacy of I-131 MIBG therapy in patients with refractory or relapsed neuroblastoma. ('I-131 MIBG', 'Chemical', '-', (45, 55)) ('patients', 'Species', '9606', (67, 75)) ('neuroblastoma', 'Disease', (104, 117)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (104, 117)) ('refractory', 'Disease', (81, 91)) ('I-131', 'Var', (45, 50)) ('neuroblastoma', 'Disease', 'MESH:D009447', (104, 117)) 15704 25874239 In addition, I-131 MIBG therapy incorporated in the induction therapy is the feasible treatment strategy in patients with newly diagnosed neuroblastoma. ('neuroblastoma', 'Disease', (138, 151)) ('patients', 'Species', '9606', (108, 116)) ('I-131', 'Var', (13, 18)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (138, 151)) ('I-131 MIBG', 'Chemical', '-', (13, 23)) ('neuroblastoma', 'Disease', 'MESH:D009447', (138, 151)) 15742 22571874 In general, [123I]MIBG is thought to be slightly more sensitive than [111In]octreotide for the site of primary disease and is often the radiotracer of choice. ('primary disease', 'Disease', 'MESH:D009202', (103, 118)) ('[111In]octreotide', 'Chemical', 'MESH:C094279', (69, 86)) ('primary disease', 'Disease', (103, 118)) ('[123I]MIBG', 'Var', (12, 22)) ('[123I]MIBG', 'Chemical', '-', (12, 22)) 15746 22571874 Although [18F[FDG-PET has a high sensitivity for metastatic disease, the specificity is generally less than that of [123I]MIBG or [111In]octreotide. ('[123I]MIBG', 'Chemical', '-', (116, 126)) ('[18F[FDG-PET', 'Var', (9, 21)) ('[111In]octreotide', 'Chemical', 'MESH:C094279', (130, 147)) ('FDG', 'Chemical', 'MESH:D019788', (14, 17)) ('less', 'NegReg', (98, 102)) ('metastatic disease', 'Disease', (49, 67)) 15750 22571874 Current clinical management relies on a combination of surgical resection, [131I]MIBG therapy, and chemotherapy in malignant tumors. ('malignant tumors', 'Disease', 'MESH:D018198', (115, 131)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('[131I', 'Var', (75, 80)) ('tumors', 'Phenotype', 'HP:0002664', (125, 131)) ('malignant tumors', 'Disease', (115, 131)) ('MIBG', 'Chemical', 'MESH:D019797', (81, 85)) 15753 22571874 Von Hippel-Lindau (VHL) is an autosomal dominant disease caused by VHL gene mutations that predisposes individuals to central nervous system hemangioblastomas, renal cysts, renal cell carcinoma, pancreatic cysts, retinal angiomas, and pheochromocytomas (Fig. ('carcinoma', 'Phenotype', 'HP:0030731', (184, 193)) ('central nervous system hemangioblastomas', 'Disease', 'MESH:D018325', (118, 158)) ('caused', 'Reg', (57, 63)) ('autosomal dominant disease', 'Disease', (30, 56)) ('VHL', 'Gene', (67, 70)) ('nervous system hemangioblastomas', 'Phenotype', 'HP:0006880', (126, 158)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (235, 251)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (173, 193)) ('pancreatic cysts', 'Disease', 'MESH:D010181', (195, 211)) ('central nervous system hemangioblastomas', 'Disease', (118, 158)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (235, 252)) ('pheochromocytomas', 'Disease', (235, 252)) ('VHL', 'Gene', '7428', (67, 70)) ('Von Hippel-Lindau', 'Gene', '7428', (0, 17)) ('VHL', 'Gene', (19, 22)) ('Von Hippel-Lindau', 'Gene', (0, 17)) ('renal cysts', 'Disease', (160, 171)) ('renal cell carcinoma', 'Disease', (173, 193)) ('retinal angiomas', 'Disease', (213, 229)) ('mutations', 'Var', (76, 85)) ('renal cysts', 'Phenotype', 'HP:0000107', (160, 171)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (173, 193)) ('pancreatic cysts', 'Disease', (195, 211)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (235, 252)) ('VHL', 'Gene', '7428', (19, 22)) ('retinal angiomas', 'Disease', 'MESH:D012173', (213, 229)) ('pancreatic cysts', 'Phenotype', 'HP:0001737', (195, 211)) ('renal cysts', 'Disease', 'MESH:D007674', (160, 171)) ('autosomal dominant disease', 'Disease', 'MESH:D030342', (30, 56)) 15756 22571874 Genetic analysis has also linked mutations in the succinate dehydrogenase (SDH) genes to the development of parangangliomas and pheochromocytomas. ('succinate dehydrogenase', 'Gene', '6390', (50, 73)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (128, 144)) ('mutations', 'Var', (33, 42)) ('SDH', 'Gene', '6390', (75, 78)) ('linked', 'Reg', (26, 32)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (128, 145)) ('succinate dehydrogenase', 'Gene', (50, 73)) ('SDH', 'Gene', (75, 78)) ('parangangliomas and pheochromocytomas', 'Disease', 'MESH:D010673', (108, 145)) 15757 22571874 At least 4 paraganglioma syndromes named paraganglioma syndrome I-IV have been linked to mutations in the SDHD, SDH5, SDHC, and SDHB, respectively. ('SDHB', 'Gene', (128, 132)) ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (11, 34)) ('SDH5', 'Gene', (112, 116)) ('linked', 'Reg', (79, 85)) ('paraganglioma', 'Phenotype', 'HP:0002668', (41, 54)) ('paraganglioma syndromes', 'Disease', (11, 34)) ('SDHD', 'Gene', '6392', (106, 110)) ('paraganglioma', 'Phenotype', 'HP:0002668', (11, 24)) ('SDHD', 'Gene', (106, 110)) ('mutations', 'Var', (89, 98)) ('SDH5', 'Gene', '54949', (112, 116)) ('paraganglioma syndrome I-IV', 'Disease', (41, 68)) ('SDHC', 'Gene', (118, 122)) ('SDHB', 'Gene', '6390', (128, 132)) ('paraganglioma syndrome I-IV', 'Disease', 'MESH:D010235', (41, 68)) ('SDHC', 'Gene', '6391', (118, 122)) 15784 21753790 First are those sarcomas with near-diploid karyotypes and simple genetic alterations including translocations or specific activating mutations. ('sarcomas', 'Disease', (16, 24)) ('activating', 'PosReg', (122, 132)) ('sarcomas', 'Disease', 'MESH:D012509', (16, 24)) ('translocations', 'Var', (95, 109)) ('sarcoma', 'Phenotype', 'HP:0100242', (16, 23)) ('sarcomas', 'Phenotype', 'HP:0100242', (16, 24)) 15790 21753790 Although well studied, the physiological roles of the individual genes in these fusions have seldom been directly linked to their respective sarcoma phenotypes, save perhaps for translocations of the myogenic transcription factor genes paired box 3 (PAX3) and PAX7 with forkhead box O1 (FOXO1) in alveolar rhabdomyosarcomas (ARMS; discussed below). ('FOXO1', 'Gene', (287, 292)) ('ARMS', 'Phenotype', 'HP:0006779', (325, 329)) ('sarcoma', 'Disease', (141, 148)) ('sarcoma', 'Disease', 'MESH:D012509', (315, 322)) ('alveolar rhabdomyosarcomas', 'Disease', (297, 323)) ('sarcoma', 'Disease', (315, 322)) ('PAX7', 'Gene', '5081', (260, 264)) ('PAX7', 'Gene', (260, 264)) ('sarcoma', 'Phenotype', 'HP:0100242', (141, 148)) ('alveolar rhabdomyosarcomas', 'Disease', 'MESH:D018232', (297, 323)) ('paired box 3', 'Gene', (236, 248)) ('rhabdomyosarcoma', 'Phenotype', 'HP:0002859', (306, 322)) ('sarcoma', 'Phenotype', 'HP:0100242', (315, 322)) ('forkhead box O1', 'Gene', '2308', (270, 285)) ('sarcomas', 'Phenotype', 'HP:0100242', (315, 323)) ('forkhead box O1', 'Gene', (270, 285)) ('PAX3', 'Gene', (250, 254)) ('AR', 'Gene', '367', (325, 327)) ('alveolar rhabdomyosarcomas', 'Phenotype', 'HP:0006779', (297, 323)) ('paired box 3', 'Gene', '5077', (236, 248)) ('translocations', 'Var', (178, 192)) ('sarcoma', 'Disease', 'MESH:D012509', (141, 148)) ('rhabdomyosarcomas', 'Phenotype', 'HP:0002859', (306, 323)) 15796 21753790 The mechanisms that drive human sarcomagenesis fall into three broad categories: transcriptional dysregulation owing to aberrant fusion proteins resulting from genomic rearrangements (FIG. ('aberrant', 'Var', (120, 128)) ('transcriptional dysregulation', 'MPA', (81, 110)) ('fall', 'Phenotype', 'HP:0002527', (47, 51)) ('sarcoma', 'Disease', 'MESH:D012509', (32, 39)) ('fusion proteins', 'Protein', (129, 144)) ('sarcoma', 'Disease', (32, 39)) ('sarcoma', 'Phenotype', 'HP:0100242', (32, 39)) ('human', 'Species', '9606', (26, 31)) 15802 21753790 Finally, regarding external risk factors, sarcoma translocations, in particular the t(X;18) of synovial sarcoma, may be rarely related to radiotherapy-induced DNA damage. ('sarcoma', 'Disease', (42, 49)) ('sarcoma', 'Disease', (104, 111)) ('synovial sarcoma', 'Disease', (95, 111)) ('sarcoma', 'Phenotype', 'HP:0100242', (42, 49)) ('sarcoma', 'Phenotype', 'HP:0100242', (104, 111)) ('t(X;18', 'Var', (84, 90)) ('synovial sarcoma', 'Phenotype', 'HP:0012570', (95, 111)) ('synovial sarcoma', 'Disease', 'MESH:D013584', (95, 111)) ('sarcoma', 'Disease', 'MESH:D012509', (42, 49)) ('sarcoma', 'Disease', 'MESH:D012509', (104, 111)) 15811 21753790 As noted above, most recurrent tumor-type-specific translocations in sarcomas produce gene fusions that encode aberrant transcriptional proteins. ('translocations', 'Var', (51, 65)) ('sarcomas', 'Phenotype', 'HP:0100242', (69, 77)) ('tumor', 'Phenotype', 'HP:0002664', (31, 36)) ('gene fusions', 'Var', (86, 98)) ('tumor', 'Disease', (31, 36)) ('sarcoma', 'Phenotype', 'HP:0100242', (69, 76)) ('sarcomas', 'Disease', (69, 77)) ('tumor', 'Disease', 'MESH:D009369', (31, 36)) ('sarcomas', 'Disease', 'MESH:D012509', (69, 77)) 15813 21753790 Likewise, general reviews of translocation-associated sarcomas, including comprehensive listings of recurrent gene fusions in sarcomas, have recently been published (FIG. ('sarcomas', 'Phenotype', 'HP:0100242', (126, 134)) ('sarcoma', 'Phenotype', 'HP:0100242', (126, 133)) ('sarcomas', 'Disease', (126, 134)) ('translocation-associated', 'Var', (29, 53)) ('sarcomas', 'Disease', 'MESH:D012509', (54, 62)) ('sarcomas', 'Phenotype', 'HP:0100242', (54, 62)) ('sarcoma', 'Phenotype', 'HP:0100242', (54, 61)) ('sarcomas', 'Disease', 'MESH:D012509', (126, 134)) ('sarcomas', 'Disease', (54, 62)) 15824 21753790 This is typified by the MDM2SNP309 promoter polymorphism, which along with MDM2 amplification and TP53 deletion and mutation, represents another mechanism of aberrant p53 activity in a broad range of sarcomas. ('mutation', 'Var', (116, 124)) ('MDM2', 'Gene', '4193', (75, 79)) ('sarcomas', 'Disease', 'MESH:D012509', (200, 208)) ('MDM2', 'Gene', (75, 79)) ('MDM2', 'Gene', '4193', (24, 28)) ('sarcomas', 'Phenotype', 'HP:0100242', (200, 208)) ('sarcoma', 'Phenotype', 'HP:0100242', (200, 207)) ('MDM2', 'Gene', (24, 28)) ('p53', 'Gene', '7157', (167, 170)) ('TP53', 'Gene', (98, 102)) ('sarcomas', 'Disease', (200, 208)) ('TP53', 'Gene', '7157', (98, 102)) ('p53', 'Gene', (167, 170)) ('activity', 'MPA', (171, 179)) ('deletion', 'Var', (103, 111)) 15833 21753790 Microsatellites containing 6 or more GGAA repeats (the core ETS domain binding sequence) are associated with EWS-FLI1 target gene upregulation. ('EWS-FLI1', 'Gene', (109, 117)) ('EWS-FLI1', 'Gene', '2130;2313', (109, 117)) ('upregulation', 'PosReg', (130, 142)) ('GGAA', 'Protein', (37, 41)) ('Microsatellites', 'Var', (0, 15)) 15839 21753790 Genes found to be directly up-regulated by specific aberrant sarcoma fusion proteins can be subjected to focused RNA interference (RNAi)-based screens to identify the genes most essential to the sarcoma in question (see Target Discovery below). ('up-regulated', 'PosReg', (27, 39)) ('sarcoma', 'Disease', (195, 202)) ('sarcoma', 'Phenotype', 'HP:0100242', (195, 202)) ('sarcoma', 'Disease', 'MESH:D012509', (61, 68)) ('aberrant', 'Var', (52, 60)) ('sarcoma', 'Disease', 'MESH:D012509', (195, 202)) ('sarcoma', 'Disease', (61, 68)) ('sarcoma', 'Phenotype', 'HP:0100242', (61, 68)) 15844 21753790 Silencing EWS-FLI1 in Ewing sarcoma cell lines produces an expression profile most similar to mesenchymal stem cells (MSCs) or mesenchymal progenitor cells and these can subsequently be induced to differentiate along adipogenic or osteoblastic lineages. ('induced', 'Reg', (186, 193)) ('sarcoma', 'Phenotype', 'HP:0100242', (28, 35)) ('expression', 'Species', '29278', (59, 69)) ('Ewing sarcoma', 'Phenotype', 'HP:0012254', (22, 35)) ('osteoblastic', 'Disease', 'None', (231, 243)) ('Ewing sarcoma', 'Disease', 'MESH:C563168', (22, 35)) ('EWS-FLI1', 'Gene', (10, 18)) ('osteoblastic', 'Disease', (231, 243)) ('expression profile', 'MPA', (59, 77)) ('Silencing', 'Var', (0, 9)) ('Ewing sarcoma', 'Disease', (22, 35)) ('EWS-FLI1', 'Gene', '2130;2313', (10, 18)) 15846 21753790 In the converse experiment, EWS-FLI1 expression in human MSCs induces a Ewing sarcoma gene expression profile, especially clear in MSCs derived from younger individuals. ('Ewing sarcoma', 'Phenotype', 'HP:0012254', (72, 85)) ('expression', 'Var', (37, 47)) ('EWS-FLI1', 'Gene', '2130;2313', (28, 36)) ('Ewing sarcoma', 'Disease', 'MESH:C563168', (72, 85)) ('induces', 'Reg', (62, 69)) ('human', 'Species', '9606', (51, 56)) ('Ewing sarcoma', 'Disease', (72, 85)) ('expression', 'Species', '29278', (37, 47)) ('EWS-FLI1', 'Gene', (28, 36)) ('sarcoma', 'Phenotype', 'HP:0100242', (78, 85)) ('expression', 'Species', '29278', (91, 101)) 15850 21753790 Synovial sarcomas contain fusions of the SS18 (also known as SYT) gene with either SSX1 or SSX2. ('SYT', 'Gene', '6760', (61, 64)) ('fusions', 'Var', (26, 33)) ('SSX2', 'Gene', '6757', (91, 95)) ('sarcomas', 'Disease', (9, 17)) ('SSX1', 'Gene', '6756', (83, 87)) ('SS18', 'Gene', '6760', (41, 45)) ('sarcomas', 'Disease', 'MESH:D012509', (9, 17)) ('sarcomas', 'Phenotype', 'HP:0100242', (9, 17)) ('sarcoma', 'Phenotype', 'HP:0100242', (9, 16)) ('SS18', 'Gene', (41, 45)) ('SYT', 'Gene', (61, 64)) ('SSX1', 'Gene', (83, 87)) ('SSX2', 'Gene', (91, 95)) ('Synovial sarcomas', 'Phenotype', 'HP:0012570', (0, 17)) 15851 21753790 In a striking analogy to the EWS-FLI1 data, synovial sarcoma cell lines also express POU5F1, SOX2 and NANOG, and silencing of SYT-SSX in these cell lines enhances their potential to differentiate along adipogenic, osteoblastic or chondrogenic lineages. ('SYT', 'Gene', '6760', (126, 129)) ('synovial sarcoma', 'Phenotype', 'HP:0012570', (44, 60)) ('enhances', 'PosReg', (154, 162)) ('chondrogenic lineages', 'CPA', (230, 251)) ('EWS-FLI1', 'Gene', (29, 37)) ('SSX', 'Gene', '6757', (130, 133)) ('POU5F1', 'Gene', '5460', (85, 91)) ('sarcoma', 'Phenotype', 'HP:0100242', (53, 60)) ('osteoblastic', 'Disease', 'None', (214, 226)) ('silencing', 'Var', (113, 122)) ('EWS-FLI1', 'Gene', '2130;2313', (29, 37)) ('SSX', 'Gene', (130, 133)) ('SYT', 'Gene', (126, 129)) ('osteoblastic', 'Disease', (214, 226)) ('NANOG', 'Gene', '79923', (102, 107)) ('synovial sarcoma', 'Disease', (44, 60)) ('SOX2', 'Gene', (93, 97)) ('SOX2', 'Gene', '6657', (93, 97)) ('NANOG', 'Gene', (102, 107)) ('POU5F1', 'Gene', (85, 91)) ('synovial sarcoma', 'Disease', 'MESH:D013584', (44, 60)) 15856 21753790 GIST, one of the more common human sarcoma types, is characterized by oncogenic mutations in KIT, or less often in platelet-derived growth factor receptor-alpha (PDGFRA), or rarely in BRAF . ('platelet-derived growth factor receptor-alpha', 'Gene', (115, 160)) ('human', 'Species', '9606', (29, 34)) ('KIT', 'Gene', (93, 96)) ('BRAF', 'Gene', (184, 188)) ('sarcoma', 'Disease', (35, 42)) ('mutations', 'Var', (80, 89)) ('sarcoma', 'Phenotype', 'HP:0100242', (35, 42)) ('platelet-derived growth factor receptor-alpha', 'Gene', '5156', (115, 160)) ('GIST', 'Phenotype', 'HP:0100723', (0, 4)) ('PDGFRA', 'Gene', (162, 168)) ('PDGFRA', 'Gene', '5156', (162, 168)) ('sarcoma', 'Disease', 'MESH:D012509', (35, 42)) ('BRAF', 'Gene', '673', (184, 188)) 15858 21753790 Nevertheless, oncogenic KIT mutations (in the activation domain; D816V in particular) are also found in tumors of diverse lineages including mastocytosis, acute myeloid leukemia, and germ cell tumors. ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('D816V', 'Var', (65, 70)) ('cell tumors', 'Disease', 'MESH:D005935', (188, 199)) ('D816V', 'Mutation', 'rs121913507', (65, 70)) ('leukemia', 'Phenotype', 'HP:0001909', (169, 177)) ('tumors', 'Disease', (104, 110)) ('germ cell tumors', 'Phenotype', 'HP:0100728', (183, 199)) ('tumors', 'Disease', 'MESH:D009369', (193, 199)) ('tumors', 'Disease', 'MESH:D009369', (104, 110)) ('acute myeloid leukemia', 'Disease', (155, 177)) ('mastocytosis', 'Phenotype', 'HP:0100495', (141, 153)) ('found', 'Reg', (95, 100)) ('tumors', 'Phenotype', 'HP:0002664', (193, 199)) ('mutations', 'Var', (28, 37)) ('mastocytosis', 'Disease', (141, 153)) ('KIT', 'Gene', (24, 27)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (155, 177)) ('tumors', 'Phenotype', 'HP:0002664', (104, 110)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (161, 177)) ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (155, 177)) ('tumor', 'Phenotype', 'HP:0002664', (193, 198)) ('tumors', 'Disease', (193, 199)) ('mastocytosis', 'Disease', 'MESH:D008415', (141, 153)) ('cell tumors', 'Disease', (188, 199)) 15859 21753790 Approximately 10% of adult GISTs lack a KIT or PDGFRA mutation, a small subset (<1% of total GIST cases) harbor BRAF-V600E mutations (Table 1). ('mutation', 'Var', (54, 62)) ('BRAF', 'Gene', '673', (112, 116)) ('BRAF', 'Gene', (112, 116)) ('GIST', 'Phenotype', 'HP:0100723', (27, 31)) ('GIST', 'Phenotype', 'HP:0100723', (93, 97)) ('KIT', 'Gene', (40, 43)) ('PDGFRA', 'Gene', (47, 53)) ('V600E', 'Mutation', 'rs113488022', (117, 122)) ('PDGFRA', 'Gene', '5156', (47, 53)) 15860 21753790 Most pediatric GISTs harbor no mutations in KIT, PDGFRA, or BRAF, although KIT pathway activity is high in pediatric cases and in adult cases lacking mutations. ('mutations', 'Var', (31, 40)) ('activity', 'MPA', (87, 95)) ('PDGFRA', 'Gene', (49, 55)) ('BRAF', 'Gene', (60, 64)) ('BRAF', 'Gene', '673', (60, 64)) ('KIT pathway', 'Pathway', (75, 86)) ('PDGFRA', 'Gene', '5156', (49, 55)) ('KIT', 'Gene', (44, 47)) ('GIST', 'Phenotype', 'HP:0100723', (15, 19)) 15861 21753790 In total, approximately 10% of adult and most pediatric GISTs harbor no mutations in KIT, PDGFRA, or BRAF, although KIT pathway activity is high. ('BRAF', 'Gene', (101, 105)) ('mutations', 'Var', (72, 81)) ('PDGFRA', 'Gene', '5156', (90, 96)) ('PDGFRA', 'Gene', (90, 96)) ('KIT', 'Gene', (85, 88)) ('BRAF', 'Gene', '673', (101, 105)) ('GIST', 'Phenotype', 'HP:0100723', (56, 60)) 15863 21753790 In fact, pediatric tumors have mostly diploid genomes with few if any DNA copy-number alterations. ('pediatric tumors', 'Disease', 'MESH:D063766', (9, 25)) ('diploid genomes', 'Var', (38, 53)) ('pediatric tumors', 'Disease', (9, 25)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) 15866 21753790 In Carney-Stratakis syndrome, which is characterized by the co-occurrence of GIST and paraganglioma, germline mutations in genes encoding subunits of succinate dehydrogenase have been identified, as is also the case in familial paraganglioma. ('Carney-Stratakis syndrome', 'Disease', (3, 28)) ('paraganglioma', 'Disease', 'MESH:D010235', (86, 99)) ('mutations', 'Var', (110, 119)) ('GIST', 'Phenotype', 'HP:0100723', (77, 81)) ('paraganglioma', 'Disease', 'MESH:D010235', (228, 241)) ('paraganglioma', 'Phenotype', 'HP:0002668', (86, 99)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (3, 28)) ('familial paraganglioma', 'Disease', (219, 241)) ('paraganglioma', 'Phenotype', 'HP:0002668', (228, 241)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (219, 241)) ('paraganglioma', 'Disease', (86, 99)) ('paraganglioma', 'Disease', (228, 241)) 15869 21753790 Sequencing of these five genes revealed KDR mutations in about 10% of cases of angiosarcoma. ('angiosarcoma', 'Disease', (79, 91)) ('KDR', 'Gene', '3791', (40, 43)) ('angiosarcoma', 'Phenotype', 'HP:0200058', (79, 91)) ('revealed', 'Reg', (31, 39)) ('sarcoma', 'Phenotype', 'HP:0100242', (84, 91)) ('mutations', 'Var', (44, 53)) ('angiosarcoma', 'Disease', 'MESH:D006394', (79, 91)) ('KDR', 'Gene', (40, 43)) 15870 21753790 The VEGFR2 mutant proteins, when expressed in COS-7 cells, showed ligand-independent activation. ('VEGFR2', 'Gene', '3791', (4, 10)) ('mutant', 'Var', (11, 17)) ('proteins', 'Protein', (18, 26)) ('VEGFR2', 'Gene', (4, 10)) ('activation', 'PosReg', (85, 95)) ('COS-7', 'CellLine', 'CVCL:0224', (46, 51)) 15871 21753790 A recent large-scale analysis of the genomic landscape of sarcomas encompassing seven major subtypes (myxoid/round-cell, dedifferentiated, and pleomorphic liposarcomas; myxofibrosarcoma, leiomyosarcoma, GIST, and synovial sarcoma) identified frequent mutations in TP53 (which encodes p53), NF1, and PI3K catalytic subunit-alpha (PIK3CA). ('synovial sarcoma', 'Phenotype', 'HP:0012570', (213, 229)) ('leiomyosarcoma', 'Phenotype', 'HP:0100243', (187, 201)) ('pleomorphic liposarcomas; myxofibrosarcoma', 'Disease', 'MESH:D008080', (143, 185)) ('TP53', 'Gene', '7157', (264, 268)) ('sarcoma', 'Phenotype', 'HP:0100242', (159, 166)) ('liposarcomas', 'Phenotype', 'HP:0012034', (155, 167)) ('leiomyosarcoma', 'Disease', 'MESH:D007890', (187, 201)) ('liposarcoma', 'Phenotype', 'HP:0012034', (155, 166)) ('PIK3CA', 'Gene', (329, 335)) ('NF1', 'Gene', '4763', (290, 293)) ('p53', 'Gene', '7157', (284, 287)) ('GIST', 'Phenotype', 'HP:0100723', (203, 207)) ('sarcoma', 'Phenotype', 'HP:0100242', (222, 229)) ('leiomyosarcoma', 'Disease', (187, 201)) ('pleomorphic liposarcomas; myxofibrosarcoma', 'Disease', (143, 185)) ('TP53', 'Gene', (264, 268)) ('NF1', 'Gene', (290, 293)) ('p53', 'Gene', (284, 287)) ('synovial sarcoma', 'Disease', (213, 229)) ('sarcomas', 'Disease', 'MESH:D012509', (58, 66)) ('sarcoma', 'Phenotype', 'HP:0100242', (58, 65)) ('sarcomas', 'Disease', 'MESH:D012509', (159, 167)) ('synovial sarcoma', 'Disease', 'MESH:D013584', (213, 229)) ('sarcoma', 'Phenotype', 'HP:0100242', (178, 185)) ('mutations', 'Var', (251, 260)) ('sarcomas', 'Phenotype', 'HP:0100242', (58, 66)) ('sarcomas', 'Phenotype', 'HP:0100242', (159, 167)) ('sarcomas', 'Disease', (58, 66)) ('PIK3CA', 'Gene', '5290', (329, 335)) ('sarcomas', 'Disease', (159, 167)) ('sarcoma', 'Phenotype', 'HP:0100242', (194, 201)) 15872 21753790 TP53 mutations were identified in 17% of pleomorphic liposarcomas, consistent with these mutations being frequent in sarcomas with complex karyotypes. ('TP53', 'Gene', '7157', (0, 4)) ('TP53', 'Gene', (0, 4)) ('sarcomas', 'Disease', 'MESH:D012509', (117, 125)) ('liposarcomas', 'Phenotype', 'HP:0012034', (53, 65)) ('sarcomas', 'Phenotype', 'HP:0100242', (117, 125)) ('sarcoma', 'Phenotype', 'HP:0100242', (117, 124)) ('mutations', 'Var', (5, 14)) ('sarcomas', 'Disease', (117, 125)) ('pleomorphic liposarcomas', 'Disease', (41, 65)) ('sarcomas', 'Disease', 'MESH:D012509', (57, 65)) ('liposarcoma', 'Phenotype', 'HP:0012034', (53, 64)) ('sarcomas', 'Phenotype', 'HP:0100242', (57, 65)) ('sarcoma', 'Phenotype', 'HP:0100242', (57, 64)) ('pleomorphic liposarcomas', 'Disease', 'MESH:D008080', (41, 65)) ('sarcomas', 'Disease', (57, 65)) 15873 21753790 By contrast, in translocation-associated sarcomas secondary genetic alterations, such as TP53 mutations or homozygous deletions of cyclin-dependent kinase inhibitor 2A (CDKN2A), are less common but, when present, are associated with a highly aggressive clinical course. ('CDKN2A', 'Gene', (169, 175)) ('TP53', 'Gene', '7157', (89, 93)) ('TP53', 'Gene', (89, 93)) ('sarcomas', 'Phenotype', 'HP:0100242', (41, 49)) ('associated with', 'Reg', (217, 232)) ('mutations', 'Var', (94, 103)) ('sarcomas', 'Disease', (41, 49)) ('CDKN2A', 'Gene', '1029', (169, 175)) ('sarcoma', 'Phenotype', 'HP:0100242', (41, 48)) ('clinical', 'Species', '191496', (253, 261)) ('sarcomas', 'Disease', 'MESH:D012509', (41, 49)) 15874 21753790 The discovery of PIK3CA mutations in 18% of myxoid/round-cell liposarcomas (Table 1) raises the possibility that secondary mutations may cooperate with the FUS-CHOP fusion protein in oncogenesis. ('FUS', 'Gene', (156, 159)) ('sarcoma', 'Phenotype', 'HP:0100242', (66, 73)) ('liposarcomas', 'Disease', (62, 74)) ('FUS', 'Gene', '2521', (156, 159)) ('liposarcoma', 'Phenotype', 'HP:0012034', (62, 73)) ('PIK3CA', 'Gene', (17, 23)) ('sarcomas', 'Phenotype', 'HP:0100242', (66, 74)) ('PIK3CA', 'Gene', '5290', (17, 23)) ('mutations', 'Var', (24, 33)) ('liposarcomas', 'Disease', 'MESH:D008080', (62, 74)) ('liposarcomas', 'Phenotype', 'HP:0012034', (62, 74)) 15875 21753790 PIK3CA mutations clustered in the same two hot spots observed in epithelial tumors: the helical domain (E542K and E545K) and the kinase domain (H1047L and H1047R). ('H1047L', 'Var', (144, 150)) ('E542K', 'Var', (104, 109)) ('H1047R', 'Mutation', 'rs121913279', (155, 161)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('PIK3CA', 'Gene', (0, 6)) ('epithelial tumors', 'Disease', (65, 82)) ('E542K', 'Mutation', 'rs121913273', (104, 109)) ('PIK3CA', 'Gene', '5290', (0, 6)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) ('epithelial tumor', 'Phenotype', 'HP:0031492', (65, 81)) ('E545K', 'Mutation', 'rs104886003', (114, 119)) ('epithelial tumors', 'Disease', 'MESH:D002277', (65, 82)) ('E545K', 'Var', (114, 119)) ('H1047R', 'Var', (155, 161)) ('H1047L', 'Mutation', 'rs121913279', (144, 150)) 15876 21753790 Patients with helical domain mutations had a shorter disease-specific survival and increased AKT phosphorylation at both CREB-regulated transcription coactivator 2 (TORC2; also known as CRTC2) and pyruvate dehydrogenase kinase 1 (PDK1) phosphorylation sites than those with wild-type or kinase-domain-mutant tumors. ('CREB-regulated transcription coactivator 2', 'Gene', (121, 163)) ('shorter', 'NegReg', (45, 52)) ('pyruvate dehydrogenase kinase 1', 'Gene', '5163', (197, 228)) ('tumor', 'Phenotype', 'HP:0002664', (308, 313)) ('helical domain mutations', 'Var', (14, 38)) ('tumors', 'Phenotype', 'HP:0002664', (308, 314)) ('disease-specific survival', 'CPA', (53, 78)) ('increased', 'PosReg', (83, 92)) ('PDK1', 'Gene', '5163', (230, 234)) ('AKT', 'Gene', (93, 96)) ('Patients', 'Species', '9606', (0, 8)) ('tumors', 'Disease', (308, 314)) ('TORC2', 'Gene', (165, 170)) ('CRTC2', 'Gene', '200186', (186, 191)) ('AKT', 'Gene', '207', (93, 96)) ('tumors', 'Disease', 'MESH:D009369', (308, 314)) ('TORC2', 'Gene', '200186', (165, 170)) ('CRTC2', 'Gene', (186, 191)) ('PDK1', 'Gene', (230, 234)) ('pyruvate dehydrogenase kinase 1', 'Gene', (197, 228)) ('CREB-regulated transcription coactivator 2', 'Gene', '200186', (121, 163)) 15877 21753790 Another novel finding is that of NF1 alterations (point mutations or deletions) in 10% of myxofibrosarcomas and 8% of pleomorphic liposarcomas (Table 1). ('pleomorphic liposarcomas', 'Disease', (118, 142)) ('sarcomas', 'Phenotype', 'HP:0100242', (99, 107)) ('NF1', 'Gene', (33, 36)) ('myxofibrosarcomas', 'Disease', 'None', (90, 107)) ('liposarcomas', 'Phenotype', 'HP:0012034', (130, 142)) ('myxofibrosarcomas', 'Disease', (90, 107)) ('NF1', 'Gene', '4763', (33, 36)) ('pleomorphic liposarcomas', 'Disease', 'MESH:D008080', (118, 142)) ('deletions', 'Var', (69, 78)) ('liposarcoma', 'Phenotype', 'HP:0012034', (130, 141)) ('alterations', 'Var', (37, 48)) ('sarcoma', 'Phenotype', 'HP:0100242', (134, 141)) ('sarcoma', 'Phenotype', 'HP:0100242', (99, 106)) ('sarcomas', 'Phenotype', 'HP:0100242', (134, 142)) 15878 21753790 NF1 germline and somatic mutations are typically associated with NF1 inactivation in sarcomas in individuals with neurofibromatosis type 1 syndrome, but NF1 mutations had not been previously described in sporadic sarcomas. ('NF1', 'Gene', (153, 156)) ('associated', 'Reg', (49, 59)) ('NF1', 'Gene', (0, 3)) ('sarcomas', 'Disease', 'MESH:D012509', (213, 221)) ('sporadic sarcomas', 'Disease', (204, 221)) ('mutations', 'Var', (25, 34)) ('sarcomas', 'Phenotype', 'HP:0100242', (213, 221)) ('sarcoma', 'Phenotype', 'HP:0100242', (213, 220)) ('sarcomas', 'Disease', (213, 221)) ('neurofibromatosis type 1 syndrome', 'Disease', 'MESH:C537392', (114, 147)) ('sarcomas', 'Disease', 'MESH:D012509', (85, 93)) ('sarcoma', 'Phenotype', 'HP:0100242', (85, 92)) ('sarcomas', 'Phenotype', 'HP:0100242', (85, 93)) ('sarcomas', 'Disease', (85, 93)) ('neurofibromatosis type 1 syndrome', 'Disease', (114, 147)) ('sporadic sarcomas', 'Disease', 'MESH:D012509', (204, 221)) ('NF1', 'Gene', '4763', (65, 68)) ('neurofibroma', 'Phenotype', 'HP:0001067', (114, 126)) ('inactivation', 'NegReg', (69, 81)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (114, 131)) ('NF1', 'Gene', '4763', (153, 156)) ('NF1', 'Gene', (65, 68)) ('NF1', 'Gene', '4763', (0, 3)) 15880 21753790 Sarcomas span a wide range of complexity among human malignancies in their copy-number alterations. ('copy-number alterations', 'Var', (75, 98)) ('Sarcomas', 'Disease', 'MESH:D012509', (0, 8)) ('malignancies', 'Disease', 'MESH:D009369', (53, 65)) ('malignancies', 'Disease', (53, 65)) ('Sarcomas', 'Phenotype', 'HP:0100242', (0, 8)) ('human', 'Species', '9606', (47, 52)) ('Sarcomas', 'Disease', (0, 8)) 15884 21753790 These three groups are genomically simple sarcomas, driven by pathognomonic translocations or point mutations; non-translocation-associated sarcomas of intermediate genomic complexity; and highly genomically complex sarcomas, while some subtypes may not fit so neatly in these broad groups, such as PAX7-FOXO1-positive ARMS. ('PAX7', 'Gene', '5081', (299, 303)) ('sarcoma', 'Phenotype', 'HP:0100242', (216, 223)) ('sarcoma', 'Phenotype', 'HP:0100242', (42, 49)) ('PAX7', 'Gene', (299, 303)) ('non-translocation-associated', 'Disease', (111, 139)) ('AR', 'Gene', '367', (319, 321)) ('sarcomas', 'Disease', 'MESH:D012509', (140, 148)) ('sarcomas', 'Phenotype', 'HP:0100242', (140, 148)) ('sarcomas', 'Disease', (140, 148)) ('sarcomas', 'Disease', 'MESH:D012509', (216, 224)) ('sarcomas', 'Disease', 'MESH:D012509', (42, 50)) ('ARMS', 'Phenotype', 'HP:0006779', (319, 323)) ('sarcomas', 'Phenotype', 'HP:0100242', (216, 224)) ('sarcoma', 'Phenotype', 'HP:0100242', (140, 147)) ('sarcomas', 'Phenotype', 'HP:0100242', (42, 50)) ('sarcomas', 'Disease', (216, 224)) ('translocations', 'Var', (76, 90)) ('sarcomas', 'Disease', (42, 50)) ('point mutations', 'Var', (94, 109)) 15886 21753790 The first group, genomically simple sarcomas, harbor characteristic gene fusions or activating mutations thought to represent early events in their pathogenesis. ('sarcomas', 'Disease', 'MESH:D012509', (36, 44)) ('sarcomas', 'Phenotype', 'HP:0100242', (36, 44)) ('sarcomas', 'Disease', (36, 44)) ('activating', 'PosReg', (84, 94)) ('sarcoma', 'Phenotype', 'HP:0100242', (36, 43)) ('gene fusions', 'Var', (68, 80)) 15888 21753790 Intermediate complexity sarcomas are exemplified by well-differentiated and dedifferentiated liposarcomas, which are driven mainly by chromosome 12 alterations, often generating extra-chromosomal episomes, ring chromosomes and larger markers (FIG. ('sarcomas', 'Disease', 'MESH:D012509', (24, 32)) ('sarcomas', 'Disease', 'MESH:D012509', (97, 105)) ('alterations', 'Var', (148, 159)) ('sarcomas', 'Phenotype', 'HP:0100242', (24, 32)) ('sarcomas', 'Phenotype', 'HP:0100242', (97, 105)) ('sarcoma', 'Phenotype', 'HP:0100242', (24, 31)) ('liposarcoma', 'Phenotype', 'HP:0012034', (93, 104)) ('sarcomas', 'Disease', (24, 32)) ('extra-chromosomal episomes', 'MPA', (178, 204)) ('sarcoma', 'Phenotype', 'HP:0100242', (97, 104)) ('sarcomas', 'Disease', (97, 105)) ('liposarcomas', 'Phenotype', 'HP:0012034', (93, 105)) ('generating', 'Reg', (167, 177)) ('liposarcomas', 'Disease', 'MESH:D008080', (93, 105)) ('ring chromosomes', 'Var', (206, 222)) ('liposarcomas', 'Disease', (93, 105)) 15892 21753790 This genomic remodeling of chromosome 12 is likely the result of progressive rearrangement and amplification in an evolving amplicon rather than a single catastrophic event such as the recently proposed chromothripsis, seen in a subset of osteosarcomas and chordomas (Table 1). ('rearrangement', 'Var', (77, 90)) ('sarcomas', 'Phenotype', 'HP:0100242', (244, 252)) ('sarcoma', 'Phenotype', 'HP:0100242', (244, 251)) ('amplification', 'Var', (95, 108)) ('osteosarcomas and chordomas', 'Disease', 'MESH:D002817', (239, 266)) ('osteosarcoma', 'Phenotype', 'HP:0002669', (239, 251)) ('osteosarcomas', 'Phenotype', 'HP:0002669', (239, 252)) 15897 21753790 Some targets of genomic amplification appear to be shared among a subset of both intermediate and highly complex sarcomas, including Yes-associated protein 1 (YAP1) and vestigial like 3 (VGLL3) on 11q22 and 3p12, respectively. ('sarcomas', 'Disease', (113, 121)) ('intermediate', 'Disease', (81, 93)) ('vestigial like 3', 'Gene', (169, 185)) ('Yes-associated protein 1', 'Gene', '10413', (133, 157)) ('VGLL3', 'Gene', (187, 192)) ('sarcomas', 'Disease', 'MESH:D012509', (113, 121)) ('YAP1', 'Gene', (159, 163)) ('Yes-associated protein 1', 'Gene', (133, 157)) ('vestigial like 3', 'Gene', '389136', (169, 185)) ('YAP1', 'Gene', '10413', (159, 163)) ('sarcomas', 'Phenotype', 'HP:0100242', (113, 121)) ('VGLL3', 'Gene', '389136', (187, 192)) ('sarcoma', 'Phenotype', 'HP:0100242', (113, 120)) ('genomic amplification', 'Var', (16, 37)) 15899 21753790 Broad amplifications of several chromosome arms (such as 5p) often occur in combination with deletions affecting well-established tumor suppressors such as CDKN2A, CDKN2B, PTEN, retinoblastoma 1 (RB1), NF1 and TP53. ('PTEN', 'Gene', '5728', (172, 176)) ('CDKN2A', 'Gene', (156, 162)) ('TP53', 'Gene', '7157', (210, 214)) ('TP53', 'Gene', (210, 214)) ('retinoblastoma', 'Phenotype', 'HP:0009919', (178, 192)) ('CDKN2A', 'Gene', '1029', (156, 162)) ('tumor', 'Disease', 'MESH:D009369', (130, 135)) ('retinoblastoma 1 (RB1', 'Gene', '5925', (178, 199)) ('NF1', 'Gene', (202, 205)) ('deletions', 'Var', (93, 102)) ('CDKN2B', 'Gene', (164, 170)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('NF1', 'Gene', '4763', (202, 205)) ('tumor', 'Disease', (130, 135)) ('occur', 'Reg', (67, 72)) ('CDKN2B', 'Gene', '1030', (164, 170)) ('PTEN', 'Gene', (172, 176)) 15901 21753790 In other subtypes, such as leiomyosarcoma, genomic deletions are more common than amplifications. ('common', 'Reg', (70, 76)) ('leiomyosarcoma', 'Disease', 'MESH:D007890', (27, 41)) ('sarcoma', 'Phenotype', 'HP:0100242', (34, 41)) ('genomic deletions', 'Var', (43, 60)) ('leiomyosarcoma', 'Disease', (27, 41)) ('leiomyosarcoma', 'Phenotype', 'HP:0100243', (27, 41)) 15902 21753790 Nevertheless, at least a subset of leiomyosarcomas depends on the specific amplification of myocardin (MYOCD), which encodes a smooth muscle-specific transcriptional coactivator of the serum response factor (SRF) (Table 1). ('serum response factor', 'Gene', '6722', (185, 206)) ('MYOCD', 'Gene', (103, 108)) ('serum response factor', 'Gene', (185, 206)) ('sarcomas', 'Phenotype', 'HP:0100242', (42, 50)) ('sarcoma', 'Phenotype', 'HP:0100242', (42, 49)) ('SRF', 'Gene', (208, 211)) ('myocardin', 'Gene', '93649', (92, 101)) ('leiomyosarcoma', 'Phenotype', 'HP:0100243', (35, 49)) ('MYOCD', 'Gene', '93649', (103, 108)) ('amplification', 'Var', (75, 88)) ('myocardin', 'Gene', (92, 101)) ('SRF', 'Gene', '6722', (208, 211)) ('leiomyosarcomas depends', 'Disease', (35, 58)) ('leiomyosarcomas depends', 'Disease', 'MESH:D007890', (35, 58)) 15904 21753790 Therefore, while systematic catalogues of copy numbers alterations point to pathways potentially activated in specific subtypes, to precisely delineate genes involved in these events that drive sarcomagenesis it will be essential to annotate genomic characterization with high-throughput functional genetics for target discovery. ('alterations', 'Var', (55, 66)) ('activated', 'Reg', (97, 106)) ('sarcoma', 'Disease', 'MESH:D012509', (194, 201)) ('sarcoma', 'Disease', (194, 201)) ('sarcoma', 'Phenotype', 'HP:0100242', (194, 201)) ('copy numbers alterations', 'Var', (42, 66)) 15919 21753790 Two such methods, Genomic Identification of Significant Targets in Cancer (GISTIC) and RAE, assign a statistical significance to candidate driver alterations emerging from a background of random, passenger abnormalities using their pattern of recurrence, amplitude, and extent, but also assign to individuals the set of CNAs they have undergone. ('Cancer', 'Phenotype', 'HP:0002664', (67, 73)) ('Cancer', 'Disease', 'MESH:D009369', (67, 73)) ('GIST', 'Phenotype', 'HP:0100723', (75, 79)) ('alterations', 'Var', (146, 157)) ('Cancer', 'Disease', (67, 73)) 15924 21753790 Along these lines, we recently sought to functionally annotate the dedifferentiated liposarcoma genome by systematically knocking down genes altered by recurrent genomic amplification on 12q and elsewhere. ('liposarcoma', 'Disease', (84, 95)) ('knocking', 'Var', (121, 129)) ('liposarcoma', 'Disease', 'MESH:D008080', (84, 95)) ('liposarcoma', 'Phenotype', 'HP:0012034', (84, 95)) ('sarcoma', 'Phenotype', 'HP:0100242', (88, 95)) 15943 21753790 For example, in leiomyosarcoma, the most prominent genetic alteration is chromosome 10 deletions affecting PTEN, but this may be a secondary alteration. ('PTEN', 'Gene', (107, 111)) ('leiomyosarcoma', 'Disease', (16, 30)) ('PTEN', 'Gene', '5728', (107, 111)) ('leiomyosarcoma', 'Phenotype', 'HP:0100243', (16, 30)) ('leiomyosarcoma', 'Disease', 'MESH:D007890', (16, 30)) ('deletions', 'Var', (87, 96)) ('sarcoma', 'Phenotype', 'HP:0100242', (23, 30)) 15944 21753790 Nonetheless, this was modeled by genetically inactivating Pten in smooth muscle cells of mice, which led to leiomyosarcomagenesis. ('leiomyosarcoma', 'Phenotype', 'HP:0100243', (108, 122)) ('mice', 'Species', '10090', (89, 93)) ('genetically inactivating', 'Var', (33, 57)) ('sarcoma', 'Phenotype', 'HP:0100242', (115, 122)) ('led to', 'Reg', (101, 107)) ('leiomyosarcomagenesis', 'Disease', 'None', (108, 129)) ('leiomyosarcomagenesis', 'Disease', (108, 129)) ('Pten', 'Gene', (58, 62)) ('Pten', 'Gene', '19211', (58, 62)) 15945 21753790 Another recent mouse model introduced oncogenic Kras and mutant Trp53 in the muscle of mice; these changes were sufficient to generate high-grade sarcomas with myofibroblastic differentiation, but KRAS is rarely mutated in human sarcomas. ('Trp53', 'Gene', '22059', (64, 69)) ('sarcomas', 'Disease', 'MESH:D012509', (229, 237)) ('mutant', 'Var', (57, 63)) ('KRAS', 'Gene', (197, 201)) ('mouse', 'Species', '10090', (15, 20)) ('sarcomas', 'Phenotype', 'HP:0100242', (229, 237)) ('sarcomas', 'Disease', (229, 237)) ('Trp53', 'Gene', (64, 69)) ('human', 'Species', '9606', (223, 228)) ('KRAS', 'Gene', '16653', (197, 201)) ('Kras', 'Gene', (48, 52)) ('sarcoma', 'Phenotype', 'HP:0100242', (229, 236)) ('sarcomas', 'Disease', 'MESH:D012509', (146, 154)) ('sarcomas', 'Phenotype', 'HP:0100242', (146, 154)) ('sarcomas', 'Disease', (146, 154)) ('generate', 'Reg', (126, 134)) ('Kras', 'Gene', '16653', (48, 52)) ('mice', 'Species', '10090', (87, 91)) ('sarcoma', 'Phenotype', 'HP:0100242', (146, 153)) 15956 21753790 These responses to imatinib depend, however, on the specific site of mutation; tumors with activation loop mutations are generally insensitive. ('mutations', 'Var', (107, 116)) ('tumors', 'Disease', 'MESH:D009369', (79, 85)) ('tumors', 'Disease', (79, 85)) ('imatinib', 'Chemical', 'MESH:D000068877', (19, 27)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) 15959 21753790 For example, the recent success of Raf inhibitors in BRAF-V600E mutant melanoma suggests that responses may be elicited in other tumor types with a dependence on oncogenic Raf, a possible therapeutic option for the approximately 1% of adult GIST patients with BRAF-V600E mutation. ('Raf', 'Gene', '22882', (172, 175)) ('patients', 'Species', '9606', (246, 254)) ('tumor', 'Disease', (129, 134)) ('Raf', 'Gene', '22882', (35, 38)) ('tumor', 'Disease', 'MESH:D009369', (129, 134)) ('melanoma', 'Phenotype', 'HP:0002861', (71, 79)) ('melanoma', 'Disease', (71, 79)) ('V600E', 'Mutation', 'rs113488022', (58, 63)) ('V600E', 'Mutation', 'rs113488022', (265, 270)) ('mutant', 'Var', (64, 70)) ('BRAF', 'Gene', '673', (53, 57)) ('BRAF', 'Gene', (53, 57)) ('BRAF', 'Gene', '673', (260, 264)) ('Raf', 'Gene', (172, 175)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('BRAF', 'Gene', (260, 264)) ('GIST', 'Phenotype', 'HP:0100723', (241, 245)) ('melanoma', 'Disease', 'MESH:D008545', (71, 79)) ('Raf', 'Gene', (35, 38)) 15962 21753790 Among these are responses to imatinib in dermatofibrosarcoma protuberans (DFSP) and giant-cell tumors of the tendon sheath with collagen Ialpha1 (COL1A1)-platelet- derived growth factor-beta (PDGFB) and collagen Ivalpha3 (COL6A3)-colony-stimulating factor 1 (CSF1) fusions, respectively, MET inhibitor responses in ASPS and clear-cell sarcomas with ASPL-TFE3 and EWS-activating transcription factor 1 (ATF1) fusions, respectively, ALK inhibitor responses in inflammatory myofibroblastic tumors with ALK fusions, and IGF1R antibody responses in Ewing sarcoma with EWS-FLI1 or EWS-ERG fusions. ('sarcomas', 'Phenotype', 'HP:0100242', (335, 343)) ('EWS', 'Gene', (575, 578)) ('sarcomas', 'Disease', (335, 343)) ('EWS-FLI1', 'Gene', (563, 571)) ('EWS', 'Gene', '2130', (363, 366)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('giant-cell tumors of the tendon sheath', 'Disease', 'MESH:D000070779', (84, 122)) ('Ewing sarcoma', 'Disease', (544, 557)) ('EWS-activating transcription factor 1', 'Gene', '466', (363, 400)) ('myofibroblastic tumors', 'Disease', 'MESH:D009369', (471, 493)) ('PDGFB', 'Gene', (192, 197)) ('CSF1', 'Gene', (259, 263)) ('IGF1R', 'Gene', '3480', (516, 521)) ('imatinib', 'Chemical', 'MESH:D000068877', (29, 37)) ('EWS-activating transcription factor 1', 'Gene', (363, 400)) ('colony-stimulating factor 1', 'Gene', (230, 257)) ('ASPL', 'Gene', (349, 353)) ('ALK', 'Gene', '238', (431, 434)) ('EWS', 'Gene', (563, 566)) ('sarcoma', 'Phenotype', 'HP:0100242', (53, 60)) ('myofibroblastic tumors', 'Phenotype', 'HP:0020135', (471, 493)) ('dermatofibrosarcoma protuberans', 'Disease', (41, 72)) ('giant-cell tumors of the tendon sheath', 'Disease', (84, 122)) ('IGF1R', 'Gene', (516, 521)) ('ASPS', 'Gene', (315, 319)) ('EWS-FLI1', 'Gene', '2130;2313', (563, 571)) ('ALK', 'Gene', (431, 434)) ('CSF1', 'Gene', '1435', (259, 263)) ('EWS', 'Gene', '2130', (575, 578)) ('ATF1', 'Gene', (402, 406)) ('COL1A1', 'Gene', '1277', (146, 152)) ('fusions', 'Var', (503, 510)) ('EWS', 'Gene', (363, 366)) ('COL6A3', 'Gene', (222, 228)) ('tumor', 'Phenotype', 'HP:0002664', (487, 492)) ('COL6A3', 'Gene', '1293', (222, 228)) ('TFE3', 'Gene', (354, 358)) ('myofibroblastic tumors', 'Disease', (471, 493)) ('ALK', 'Gene', '238', (499, 502)) ('ASPL', 'Gene', '79058', (349, 353)) ('dermatofibrosarcoma protuberans', 'Disease', 'MESH:D018223', (41, 72)) ('DFSP', 'Disease', 'MESH:D018223', (74, 78)) ('tumors', 'Phenotype', 'HP:0002664', (487, 493)) ('ASPS', 'Gene', '79058', (315, 319)) ('COL1A1', 'Gene', (146, 152)) ('Ewing sarcoma', 'Disease', 'MESH:C563168', (544, 557)) ('Ewing sarcoma', 'Phenotype', 'HP:0012254', (544, 557)) ('sarcoma', 'Phenotype', 'HP:0100242', (550, 557)) ('TFE3', 'Gene', '7030', (354, 358)) ('ATF1', 'Gene', '466', (402, 406)) ('sarcoma', 'Phenotype', 'HP:0100242', (335, 342)) ('ASPS', 'Phenotype', 'HP:0012218', (315, 319)) ('colony-stimulating factor 1', 'Gene', '1435', (230, 257)) ('EWS', 'Gene', '2130', (563, 566)) ('ALK', 'Gene', (499, 502)) ('PDGFB', 'Gene', '5155', (192, 197)) ('DFSP', 'Disease', (74, 78)) ('sarcomas', 'Disease', 'MESH:D012509', (335, 343)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) 15971 21753790 As NF1 inactivation leads to aberrant MAPK and mTOR pathway activity, the NF1 mutations and genomic deletions recently observed in pleomorphic liposarcomas and myxofibrosarcomas may identify a broader range of patients who might respond to either RAF/MEK inhibitors or rapamycin and its analogs (rapalogues). ('inactivation', 'Var', (7, 19)) ('MEK', 'Gene', '5609', (251, 254)) ('RAF', 'Gene', (247, 250)) ('RAF', 'Gene', '22882', (247, 250)) ('MEK', 'Gene', (251, 254)) ('mutations', 'Var', (78, 87)) ('NF1', 'Gene', '4763', (3, 6)) ('patients', 'Species', '9606', (210, 218)) ('MAPK', 'Pathway', (38, 42)) ('sarcomas', 'Phenotype', 'HP:0100242', (147, 155)) ('NF1', 'Gene', '4763', (74, 77)) ('NF1', 'Gene', (3, 6)) ('activity', 'MPA', (60, 68)) ('mTOR', 'Gene', (47, 51)) ('sarcoma', 'Phenotype', 'HP:0100242', (147, 154)) ('rapamycin', 'Chemical', 'MESH:D020123', (269, 278)) ('NF1', 'Gene', (74, 77)) ('liposarcomas', 'Phenotype', 'HP:0012034', (143, 155)) ('sarcoma', 'Phenotype', 'HP:0100242', (169, 176)) ('mTOR', 'Gene', '2475', (47, 51)) ('sarcomas', 'Phenotype', 'HP:0100242', (169, 177)) ('liposarcoma', 'Phenotype', 'HP:0012034', (143, 154)) ('pleomorphic liposarcomas and myxofibrosarcomas', 'Disease', 'MESH:D008080', (131, 177)) 15972 21753790 In fact, deploying rapalogues in several complex subtypes could be justified on the basis of highly prevalent PTEN deletions, as in leiomyosarcoma. ('PTEN', 'Gene', '5728', (110, 114)) ('leiomyosarcoma', 'Disease', (132, 146)) ('leiomyosarcoma', 'Phenotype', 'HP:0100243', (132, 146)) ('leiomyosarcoma', 'Disease', 'MESH:D007890', (132, 146)) ('sarcoma', 'Phenotype', 'HP:0100242', (139, 146)) ('deletions', 'Var', (115, 124)) ('PTEN', 'Gene', (110, 114)) 15974 21753790 The finding of frequent PIK3CA mutations in myxoid/round-cell liposarcoma (Table 1) suggests that at least this molecular subset of patients might benefit from PI3K inhibitors; this is currently being tested in clinical trials. ('mutations', 'Var', (31, 40)) ('sarcoma', 'Phenotype', 'HP:0100242', (66, 73)) ('liposarcoma', 'Phenotype', 'HP:0012034', (62, 73)) ('PIK3CA', 'Gene', (24, 30)) ('clinical', 'Species', '191496', (211, 219)) ('liposarcoma', 'Disease', (62, 73)) ('PIK3CA', 'Gene', '5290', (24, 30)) ('patients', 'Species', '9606', (132, 140)) ('liposarcoma', 'Disease', 'MESH:D008080', (62, 73)) 15980 21753790 For instance, GIST harboring the more common and imatinib-sensitive KIT exon 11 mutation tend to become resistant by acquiring a second-site KIT mutation in exon 11 rather than in exon 9. ('KIT exon 11', 'Gene', (68, 79)) ('GIST', 'Phenotype', 'HP:0100723', (14, 18)) ('mutation', 'Var', (80, 88)) ('imatinib', 'Chemical', 'MESH:D000068877', (49, 57)) ('mutation', 'Var', (145, 153)) 15982 21753790 Another mechanism of resistance may involve alternative oncogenic pathways or rewiring of signaling networks, as experimental evidence suggests is the case for IGF1R inhibitors in rhabdomyosarcomas and Ewing sarcoma cell lines. ('sarcoma', 'Phenotype', 'HP:0100242', (208, 215)) ('sarcomas', 'Phenotype', 'HP:0100242', (189, 197)) ('IGF1R', 'Gene', (160, 165)) ('rhabdomyosarcomas', 'Disease', 'MESH:D012208', (180, 197)) ('sarcoma', 'Phenotype', 'HP:0100242', (189, 196)) ('Ewing sarcoma', 'Disease', (202, 215)) ('IGF1R', 'Gene', '3480', (160, 165)) ('rhabdomyosarcomas', 'Disease', (180, 197)) ('rhabdomyosarcoma', 'Phenotype', 'HP:0002859', (180, 196)) ('Ewing sarcoma', 'Phenotype', 'HP:0012254', (202, 215)) ('Ewing sarcoma', 'Disease', 'MESH:C563168', (202, 215)) ('rhabdomyosarcomas', 'Phenotype', 'HP:0002859', (180, 197)) ('inhibitors', 'Var', (166, 176)) 15983 21753790 This adaptive resistance is consistent with the lack of IGF1R mutations observed in cancer types where these therapies are active. ('cancer', 'Disease', 'MESH:D009369', (84, 90)) ('IGF1R', 'Gene', '3480', (56, 61)) ('adaptive resistance', 'MPA', (5, 24)) ('cancer', 'Disease', (84, 90)) ('cancer', 'Phenotype', 'HP:0002664', (84, 90)) ('IGF1R', 'Gene', (56, 61)) ('mutations', 'Var', (62, 71)) 15989 21753790 Considering therapeutic strategies aimed at the aberrant transcriptional proteins driving translocation sarcomas, we note that transcription factors are considered poorly druggable because their protein-protein and protein-DNA interactions have historically been difficult to inhibit with small molecules. ('sarcomas', 'Disease', 'MESH:D012509', (104, 112)) ('protein-protein', 'Protein', (195, 210)) ('sarcomas', 'Phenotype', 'HP:0100242', (104, 112)) ('sarcoma', 'Phenotype', 'HP:0100242', (104, 111)) ('aberrant', 'Var', (48, 56)) ('sarcomas', 'Disease', (104, 112)) 15994 21753790 In clear-cell sarcoma, EWS-ATF1 transactivates microphthalmia-associated transcription factor (MITF), which in turn directly activates MET transcription. ('activates', 'PosReg', (125, 134)) ('sarcoma', 'Disease', (14, 21)) ('EWS-ATF1', 'Gene', (23, 31)) ('transactivates', 'Var', (32, 46)) ('microphthalmia-associated transcription factor', 'Gene', (47, 93)) ('sarcoma', 'Phenotype', 'HP:0100242', (14, 21)) ('EWS-ATF1', 'Gene', '466;2130', (23, 31)) ('microphthalmia', 'Phenotype', 'HP:0000568', (47, 61)) ('MET transcription', 'MPA', (135, 152)) ('MITF', 'Gene', '4286', (95, 99)) ('MITF', 'Gene', (95, 99)) ('microphthalmia-associated transcription factor', 'Gene', '4286', (47, 93)) ('sarcoma', 'Disease', 'MESH:D012509', (14, 21)) 15999 21753790 These findings have in part provided the rationale for trials of IGF1R inhibitors in these sarcomas. ('inhibitors', 'Var', (71, 81)) ('IGF1R', 'Gene', (65, 70)) ('sarcomas', 'Disease', 'MESH:D012509', (91, 99)) ('sarcomas', 'Phenotype', 'HP:0100242', (91, 99)) ('sarcoma', 'Phenotype', 'HP:0100242', (91, 98)) ('sarcomas', 'Disease', (91, 99)) ('IGF1R', 'Gene', '3480', (65, 70)) 16005 21753790 Epigenetic approaches may lead to re-expression of pro-apoptotic molecules, rendering sarcomas sensitive to other agents, or itself induce apoptosis or senescence, although unknown at present. ('sarcomas', 'Disease', 'MESH:D012509', (86, 94)) ('lead to', 'Reg', (26, 33)) ('sarcoma', 'Phenotype', 'HP:0100242', (86, 93)) ('senescence', 'CPA', (152, 162)) ('apoptosis', 'CPA', (139, 148)) ('re-expression', 'MPA', (34, 47)) ('sarcomas', 'Phenotype', 'HP:0100242', (86, 94)) ('induce', 'Reg', (132, 138)) ('expression', 'Species', '29278', (37, 47)) ('sarcomas', 'Disease', (86, 94)) ('Epigenetic approaches', 'Var', (0, 21)) 16007 21753790 Targeting the p53-MDM2 pathway with nutlins is promising in tumors with MDM2 amplification (predominantly well- and dedifferentiated liposarcomas). ('sarcoma', 'Phenotype', 'HP:0100242', (137, 144)) ('liposarcomas', 'Phenotype', 'HP:0012034', (133, 145)) ('p53', 'Gene', (14, 17)) ('p53', 'Gene', '7157', (14, 17)) ('liposarcomas', 'Disease', 'MESH:D008080', (133, 145)) ('liposarcomas', 'Disease', (133, 145)) ('amplification', 'Var', (77, 90)) ('tumors', 'Disease', 'MESH:D009369', (60, 66)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('liposarcoma', 'Phenotype', 'HP:0012034', (133, 144)) ('MDM2', 'Gene', '4193', (18, 22)) ('tumors', 'Phenotype', 'HP:0002664', (60, 66)) ('MDM2', 'Gene', '4193', (72, 76)) ('MDM2', 'Gene', (18, 22)) ('sarcomas', 'Phenotype', 'HP:0100242', (137, 145)) ('MDM2', 'Gene', (72, 76)) ('tumors', 'Disease', (60, 66)) 16012 21753790 Over the next few years, the catalog of mutations that drive all but the least common diseases will become known, thanks to large-scale efforts such as TCGA and the International Cancer Genome Consortium, as well as others. ('Cancer', 'Disease', 'MESH:D009369', (179, 185)) ('mutations', 'Var', (40, 49)) ('Cancer', 'Disease', (179, 185)) ('Cancer', 'Phenotype', 'HP:0002664', (179, 185)) 16014 21753790 Translocation Structural rearrangement that juxtaposes distant genome sequences, resulting in aberrant gene expression or modified regulatory control of a gene (promoter substitution) or the formation of a fusion gene that encodes an aberrant, chimeric protein (gene fusion). ('resulting in', 'Reg', (81, 93)) ('rearrangement', 'Var', (25, 38)) ('expression', 'Species', '29278', (108, 118)) ('gene expression', 'MPA', (103, 118)) ('modified', 'Reg', (122, 130)) ('aberrant', 'Var', (94, 102)) ('regulatory control', 'MPA', (131, 149)) 16020 21753790 Novel genomic findings from diverse approaches in sarcoma are identifying point mutations that co-occur with translocations, lineage-specific oncogenes, chromosomal remodeling events, and both genomic alterations and mutations that alter canonical signaling and differentiation pathways. ('alter', 'Reg', (232, 237)) ('sarcoma', 'Disease', 'MESH:D012509', (50, 57)) ('sarcoma', 'Disease', (50, 57)) ('differentiation pathways', 'Pathway', (262, 286)) ('sarcoma', 'Phenotype', 'HP:0100242', (50, 57)) ('mutations', 'Var', (217, 226)) ('translocations', 'Disease', (109, 123)) 16091 21092109 A deletion of the succinate dehydrogenase subunit B gene has recently been associated with composite paraganglioma with neuroblastoma. ('paraganglioma', 'Disease', 'MESH:D010235', (101, 114)) ('deletion', 'Var', (2, 10)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (18, 51)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (120, 133)) ('succinate dehydrogenase subunit B', 'Gene', (18, 51)) ('neuroblastoma', 'Disease', 'MESH:D009447', (120, 133)) ('paraganglioma', 'Phenotype', 'HP:0002668', (101, 114)) ('neuroblastoma', 'Disease', (120, 133)) ('associated', 'Reg', (75, 85)) ('paraganglioma', 'Disease', (101, 114)) 16115 20842251 131-MIBG and octreotide have high sensitivity and accuracy in diagosing extra-adrenal paraganglioma. ('131-MIBG', 'Var', (0, 8)) ('extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (72, 99)) ('131-MIBG', 'Chemical', '-', (0, 8)) ('octreotide', 'Chemical', 'MESH:D015282', (13, 23)) ('paraganglioma', 'Phenotype', 'HP:0002668', (86, 99)) ('extra-adrenal paraganglioma', 'Disease', (72, 99)) 16152 20842251 It is reported silent extra-adrenal PGL of retroperitoneum is probably due to mutations of the gene for succinate dehydrogenase-B (SDHB). ('SDHB', 'Gene', '6390', (131, 135)) ('due', 'Reg', (71, 74)) ('succinate dehydrogenase-B', 'Gene', '6390', (104, 129)) ('succinate dehydrogenase-B', 'Gene', (104, 129)) ('SDHB', 'Gene', (131, 135)) ('mutations', 'Var', (78, 87)) ('extra-adrenal PGL of', 'Disease', (22, 42)) 16163 20842251 The sensitivity of 131I-MIBG for detecting PGLs ranges between 80 and 90%, with a specificity of 90-100%. ('PGLs', 'Protein', (43, 47)) ('131I-MIBG', 'Var', (19, 28)) ('PGLs', 'Phenotype', 'HP:0002668', (43, 47)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (19, 28)) 16188 20842251 Treatment with therapeutic doses of 131I-MIBG or combination chemotherapy (cyclophosphamide, vincristine, and darcabazine) may induce (partial) responses to malignant PGLs. ('induce', 'Reg', (127, 133)) ('PGLs', 'Phenotype', 'HP:0002668', (167, 171)) ('131I-MIBG', 'Var', (36, 45)) ('darcabazine', 'Chemical', '-', (110, 121)) ('cyclophosphamide', 'Chemical', 'MESH:D003520', (75, 91)) ('vincristine', 'Chemical', 'MESH:D014750', (93, 104)) ('men', 'Species', '9606', (5, 8)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (36, 45)) ('responses', 'MPA', (144, 153)) 16190 20842251 131I-MIBG and octreotide have high sensitivity and accuracy in diagnosing silent extra-adrenal PGL. ('131I-MIBG', 'Var', (0, 9)) ('octreotide', 'Chemical', 'MESH:D015282', (14, 24)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (0, 9)) ('silent extra-adrenal PGL', 'Disease', (74, 98)) 16194 19596260 Loss of heterozygosity of succinate dehydrogenase B mutation by direct sequencing in synchronous paragangliomas Extraadrenal pheochromocytomas and paragangliomas are rare entities within the pediatric population. ('Extraadrenal pheochromocytomas', 'Phenotype', 'HP:0006737', (112, 142)) ('paragangliomas', 'Disease', 'MESH:D010235', (97, 111)) ('mutation', 'Var', (52, 60)) ('paragangliomas', 'Phenotype', 'HP:0002668', (97, 111)) ('succinate dehydrogenase', 'Gene', (26, 49)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (125, 141)) ('paragangliomas', 'Disease', (147, 161)) ('synchronous paragangliomas', 'Disease', (85, 111)) ('synchronous paragangliomas', 'Disease', 'MESH:D009378', (85, 111)) ('Loss', 'NegReg', (0, 4)) ('Extraadrenal pheochromocytomas', 'Disease', (112, 142)) ('paraganglioma', 'Phenotype', 'HP:0002668', (147, 160)) ('paragangliomas', 'Disease', (97, 111)) ('succinate dehydrogenase', 'Gene', '6390', (26, 49)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (125, 142)) ('paragangliomas', 'Disease', 'MESH:D010235', (147, 161)) ('paragangliomas', 'Phenotype', 'HP:0002668', (147, 161)) ('paraganglioma', 'Phenotype', 'HP:0002668', (97, 110)) ('Extraadrenal pheochromocytomas', 'Disease', 'MESH:C565335', (112, 142)) 16201 19596260 Germline mutation in SDHD at 11q23 predisposes to benign head and neck tumors. ('head and neck tumors', 'Phenotype', 'HP:0012288', (57, 77)) ('SDHD', 'Gene', '6392', (21, 25)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('SDHD', 'Gene', (21, 25)) ('neck tumors', 'Disease', 'MESH:D006258', (66, 77)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('Germline mutation', 'Var', (0, 17)) ('neck tumors', 'Disease', (66, 77)) ('predisposes', 'Reg', (35, 46)) 16202 19596260 SDHC mutations at 1q21 are associated with solitary tumors. ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('tumors', 'Phenotype', 'HP:0002664', (52, 58)) ('SDHC', 'Gene', (0, 4)) ('associated', 'Reg', (27, 37)) ('solitary tumors', 'Disease', 'MESH:D054364', (43, 58)) ('mutations', 'Var', (5, 14)) ('SDHC', 'Gene', '6391', (0, 4)) ('solitary tumors', 'Disease', (43, 58)) 16203 19596260 Mutations in the iron-sulfur protein catalytic subunit, SDHB at 1p36, commonly lead to extra-adrenal abdominal tumors, classically secreting norepinephrine. ('SDHB', 'Gene', '6390', (56, 60)) ('SDHB', 'Gene', (56, 60)) ('tumor', 'Phenotype', 'HP:0002664', (111, 116)) ('tumors', 'Phenotype', 'HP:0002664', (111, 117)) ('extra-adrenal abdominal tumors', 'Disease', 'MESH:D010236', (87, 117)) ('Mutations', 'Var', (0, 9)) ('norepinephrine', 'Chemical', 'MESH:D009638', (141, 155)) ('extra-adrenal abdominal tumors', 'Disease', (87, 117)) ('lead to', 'Reg', (79, 86)) ('secreting norepinephrine', 'MPA', (131, 155)) 16206 19596260 Pediatric paragangliomas represent early manifestations of hereditary disease due to germline mutations in the von Hippel Lindau susceptibility gene VHL, MEN-2-associated RET gene, or SDH genes. ('Pediatric paragangliomas', 'Disease', (0, 24)) ('von Hippel Lindau', 'Disease', 'MESH:D006623', (111, 128)) ('MEN', 'Species', '9606', (154, 157)) ('mutations', 'Var', (94, 103)) ('hereditary disease', 'Disease', (59, 77)) ('paraganglioma', 'Phenotype', 'HP:0002668', (10, 23)) ('RET', 'Gene', (171, 174)) ('RET', 'Gene', '5979', (171, 174)) ('Pediatric paragangliomas', 'Disease', 'MESH:D010235', (0, 24)) ('hereditary disease', 'Disease', 'MESH:D030342', (59, 77)) ('VHL', 'Disease', (149, 152)) ('man', 'Species', '9606', (41, 44)) ('VHL', 'Disease', 'MESH:D006623', (149, 152)) ('SDH', 'Gene', '6390', (184, 187)) ('paragangliomas', 'Phenotype', 'HP:0002668', (10, 24)) ('von Hippel Lindau', 'Disease', (111, 128)) ('SDH', 'Gene', (184, 187)) 16207 19596260 Heterozygous germline SDH mutations resulting in loss of function confer tumor susceptibility. ('tumor', 'Disease', 'MESH:D009369', (73, 78)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('loss of function', 'NegReg', (49, 65)) ('mutations', 'Var', (26, 35)) ('tumor', 'Disease', (73, 78)) ('SDH', 'Gene', '6390', (22, 25)) ('SDH', 'Gene', (22, 25)) 16209 19596260 Here we report a pediatric patient heterozygous for a SDHB mutation who presents with three simultaneous extra-adrenal paragangliomas. ('paragangliomas', 'Phenotype', 'HP:0002668', (119, 133)) ('SDHB', 'Gene', '6390', (54, 58)) ('paraganglioma', 'Phenotype', 'HP:0002668', (119, 132)) ('SDHB', 'Gene', (54, 58)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (105, 133)) ('patient', 'Species', '9606', (27, 34)) ('mutation', 'Var', (59, 67)) ('extra-adrenal paragangliomas', 'Disease', (105, 133)) 16228 19596260 DNA from peripheral blood leukocytes was sequenced initially for mutations in the VHL tumor suppressor gene and the RET oncogene, both of which were normal. ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('VHL tumor', 'Disease', (82, 91)) ('RET', 'Gene', (116, 119)) ('VHL tumor', 'Disease', 'MESH:D006623', (82, 91)) ('mutations', 'Var', (65, 74)) ('RET', 'Gene', '5979', (116, 119)) 16229 19596260 Subsequent sequencing of SDHD, SDHC, and SDHB genes revealed a previously reported heterozygous SDHB mutation, deletion of a cytosine at nucleotide 88 in exon 2 codon 30, causing a frameshift resulting in a translation stop at codon 76. ('cytosine', 'Chemical', 'MESH:D003596', (125, 133)) ('SDHB', 'Gene', (96, 100)) ('SDHC', 'Gene', (31, 35)) ('SDHB', 'Gene', '6390', (41, 45)) ('SDHD', 'Gene', '6392', (25, 29)) ('SDHB', 'Gene', '6390', (96, 100)) ('SDHC', 'Gene', '6391', (31, 35)) ('SDHD', 'Gene', (25, 29)) ('SDHB', 'Gene', (41, 45)) ('deletion', 'Var', (111, 119)) 16233 19596260 Sequencing of both tumors revealed the predominance of the nucleotides representing the mutated allele over the diminished peaks of the normal sequence, consistent with loss of heterozygosity of SDHB in both tumors (Fig 3, middle). ('tumors', 'Disease', (19, 25)) ('tumors', 'Disease', 'MESH:D009369', (19, 25)) ('loss', 'NegReg', (169, 173)) ('tumor', 'Phenotype', 'HP:0002664', (208, 213)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('nucleotides', 'Var', (59, 70)) ('tumors', 'Disease', (208, 214)) ('SDHB', 'Gene', '6390', (195, 199)) ('tumors', 'Phenotype', 'HP:0002664', (208, 214)) ('SDHB', 'Gene', (195, 199)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('tumors', 'Disease', 'MESH:D009369', (208, 214)) 16234 19596260 Loss-of-function mutations as a cause of familial paraganglioma were first identified in the SDHD gene, and subsequently in the SDHC and SDHB genes. ('Loss-of-function', 'NegReg', (0, 16)) ('SDHD', 'Gene', (93, 97)) ('SDHB', 'Gene', '6390', (137, 141)) ('SDHC', 'Gene', (128, 132)) ('SDHB', 'Gene', (137, 141)) ('familial paraganglioma', 'Disease', (41, 63)) ('SDHC', 'Gene', '6391', (128, 132)) ('paraganglioma', 'Phenotype', 'HP:0002668', (50, 63)) ('SDHD', 'Gene', '6392', (93, 97)) ('mutations', 'Var', (17, 26)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (41, 63)) 16235 19596260 Mutations in SDHB, sometimes referred to as paraganglioma syndrome type 4 (PGL4), are notable for a higher incidence of abdominal tumors and potential for metastasis. ('paraganglioma', 'Phenotype', 'HP:0002668', (44, 57)) ('SDHB', 'Gene', '6390', (13, 17)) ('PGL4', 'Gene', '6390', (75, 79)) ('abdominal tumors', 'Disease', (120, 136)) ('PGL4', 'Gene', (75, 79)) ('paraganglioma syndrome', 'Disease', (44, 66)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (13, 17)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (44, 66)) ('tumors', 'Phenotype', 'HP:0002664', (130, 136)) ('abdominal tumors', 'Disease', 'MESH:D015746', (120, 136)) 16236 19596260 Single-nucleotide missense, nonsense, and frameshift mutations, as well as large deletions, have been identified in the SDHB gene. ('Single-nucleotide missense', 'Var', (0, 26)) ('frameshift mutations', 'Var', (42, 62)) ('SDHB', 'Gene', '6390', (120, 124)) ('SDHB', 'Gene', (120, 124)) ('nonsense', 'Var', (28, 36)) 16237 19596260 Here we report the identification of a heterozygous c.88delC frameshift mutation in the germline of a child bearing three intra-abdominal, extra-adrenal paragangliomas, as well as in his asymptomatic father, along with corresponding loss of the normal allele (LOH) in the child's tumors by DNA sequence analysis. ('paragangliomas', 'Phenotype', 'HP:0002668', (153, 167)) ('child', 'Species', '9606', (102, 107)) ('c.88delC frameshift mutation', 'Var', (52, 80)) ('tumor', 'Phenotype', 'HP:0002664', (280, 285)) ('c.88delC', 'Mutation', 'rs747198089', (52, 60)) ('tumors', 'Phenotype', 'HP:0002664', (280, 286)) ('tumors', 'Disease', (280, 286)) ('child', 'Species', '9606', (272, 277)) ('paraganglioma', 'Phenotype', 'HP:0002668', (153, 166)) ('intra-abdominal, extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (122, 167)) ('tumors', 'Disease', 'MESH:D009369', (280, 286)) 16242 19596260 Loss-of-function mutations associated with cancer predisposition predict complete loss of tumor suppressor gene function in tumors resulting from loss of heterozygosity at the mutation site. ('Loss-of-function', 'NegReg', (0, 16)) ('cancer', 'Disease', 'MESH:D009369', (43, 49)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('loss of tumor', 'Disease', 'MESH:D009369', (82, 95)) ('cancer', 'Disease', (43, 49)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('tumors', 'Disease', (124, 130)) ('tumors', 'Disease', 'MESH:D009369', (124, 130)) ('tumors', 'Phenotype', 'HP:0002664', (124, 130)) ('cancer', 'Phenotype', 'HP:0002664', (43, 49)) ('loss of heterozygosity', 'Var', (146, 168)) ('mutation', 'Var', (176, 184)) ('loss of tumor', 'Disease', (82, 95)) ('mutations', 'Var', (17, 26)) ('function', 'MPA', (112, 120)) 16243 19596260 LOH in SDHB tumors has been demonstrated by fluorescence in situ hybridization by using probes for chromosome 1 p in a nonfamilial malignant pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (141, 157)) ('probes', 'Var', (88, 94)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('SDHB tumors', 'Disease', (7, 18)) ('tumors', 'Phenotype', 'HP:0002664', (12, 18)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (131, 157)) ('SDHB tumors', 'Disease', 'MESH:D009369', (7, 18)) ('malignant pheochromocytoma', 'Disease', (131, 157)) 16245 19596260 Our demonstration by sequence analysis of the predominance of the mutated SDHB allele over the normal allele in both abdominal tumors of this patient confirms loss of LOH as an important feature of paraganglioma pathogenesis in this tumor predisposition syndrome. ('paraganglioma', 'Disease', (198, 211)) ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('mutated', 'Var', (66, 73)) ('abdominal tumors', 'Disease', (117, 133)) ('tumor', 'Phenotype', 'HP:0002664', (233, 238)) ('tumors', 'Phenotype', 'HP:0002664', (127, 133)) ('tumor', 'Disease', (233, 238)) ('tumor', 'Disease', (127, 132)) ('SDHB', 'Gene', '6390', (74, 78)) ('paraganglioma', 'Disease', 'MESH:D010235', (198, 211)) ('SDHB', 'Gene', (74, 78)) ('abdominal tumors', 'Disease', 'MESH:D015746', (117, 133)) ('tumor', 'Disease', 'MESH:D009369', (127, 132)) ('patient', 'Species', '9606', (142, 149)) ('paraganglioma', 'Phenotype', 'HP:0002668', (198, 211)) ('tumor', 'Disease', 'MESH:D009369', (233, 238)) 16261 33902135 Furthermore, Addison's disease or congenital adrenal hyperplasia (CAH) are respectively associated with insufficient or dysregulated adrenal hormone production, compromising the development of sex characteristics in patients with CAH . ("Addison's disease", 'Disease', 'MESH:D000224', (13, 30)) ('CAH', 'Phenotype', 'HP:0008258', (230, 233)) ('CAH', 'Phenotype', 'HP:0008258', (66, 69)) ("Addison's disease", 'Phenotype', 'HP:0008207', (13, 30)) ('congenital adrenal hyperplasia', 'Phenotype', 'HP:0008258', (34, 64)) ('congenital adrenal hyperplasia', 'Disease', 'MESH:D000312', (34, 64)) ('congenital adrenal hyperplasia', 'Disease', (34, 64)) ('compromising', 'NegReg', (161, 173)) ('development of sex characteristics', 'CPA', (178, 212)) ('adrenal hyperplasia', 'Phenotype', 'HP:0008221', (45, 64)) ('dysregulated', 'Var', (120, 132)) ("Addison's disease", 'Disease', (13, 30)) 16274 33902135 In brief, to a reaction mixture containing 920 mul 0.4 M Tris-HCl buffer (pH 8.5), 20 mul 2.5 mM d 3 -S-adenosyl methionine ( d 3 -SAM), 20 mul 2.5 mM norepinephrine, and 40 mul tissue/cell lysate were added to a reaction tube, and incubated for 20 minutes at 37 C. Enzyme activity was quenched by placing samples on ice. ('d 3 -S-adenosyl methionine', 'Chemical', '-', (97, 123)) ('d 3 -S-adenosyl', 'Var', (97, 112)) ('Tris-HCl', 'Chemical', '-', (57, 65)) ('activity', 'MPA', (273, 281)) ('d 3 -SAM', 'Chemical', '-', (126, 134)) 16293 33902135 These include mutations in genes encoding for SDHx, fumarate hydratase and isocitrate dehydrogenase within the TCA cycle . ('fumarate hydratase', 'Gene', '2271', (52, 70)) ('mutations', 'Var', (14, 23)) ('SDHx', 'Gene', (46, 50)) ('fumarate hydratase', 'Gene', (52, 70)) 16294 33902135 This is of importance for patients with mutations in the SDHB subunit, which bears a high risk for metastatic disease, requiring a fast and reliable identification to improve patient outcome . ('metastatic disease', 'Disease', (99, 117)) ('SDHB', 'Gene', '6390', (57, 61)) ('mutations', 'Var', (40, 49)) ('metastatic disease', 'Disease', 'MESH:C538445', (99, 117)) ('SDHB', 'Gene', (57, 61)) 16298 31887185 Mutations of metabolic enzymes in somatic tissues can cause cancers due to oncometabolite accumulation. ('cause', 'Reg', (54, 59)) ('cancers', 'Phenotype', 'HP:0002664', (60, 67)) ('oncometabolite accumulation', 'MPA', (75, 102)) ('cancers', 'Disease', (60, 67)) ('cancers', 'Disease', 'MESH:D009369', (60, 67)) ('Mutations', 'Var', (0, 9)) 16302 31887185 Mitochondrial disorders can result from mutations affecting enzymes of oxidative metabolism. ('result from', 'Reg', (28, 39)) ('Mitochondrial disorders', 'Disease', (0, 23)) ('Mitochondrial disorders', 'Disease', 'MESH:D028361', (0, 23)) ('mutations', 'Var', (40, 49)) 16303 31887185 Interestingly and surprisingly, some cancers are caused by gain-of-function or loss-of-function mutations of genes encoding metabolic enzymes in susceptible tissues. ('cancers', 'Phenotype', 'HP:0002664', (37, 44)) ('loss-of-function', 'NegReg', (79, 95)) ('gain-of-function', 'PosReg', (59, 75)) ('cancers', 'Disease', 'MESH:D009369', (37, 44)) ('cancers', 'Disease', (37, 44)) ('mutations', 'Var', (96, 105)) 16308 31887185 The resulting TCA cycle dysfunction drives metabolic remodeling with dependence on glycolysis and a profound accumulation of succinate as defective SDH cannot oxidize this dicarboxylic acid to fumarate. ('dicarboxylic acid', 'Chemical', 'MESH:D003998', (172, 189)) ('succinate', 'Chemical', 'MESH:D013386', (125, 134)) ('TCA cycle', 'Enzyme', (14, 23)) ('TCA', 'Chemical', 'MESH:C000589078', (14, 17)) ('defective', 'Var', (138, 147)) ('dysfunction', 'Reg', (24, 35)) ('SDH', 'Gene', (148, 151)) ('fumarate', 'Chemical', 'MESH:D005650', (193, 201)) ('accumulation', 'PosReg', (109, 121)) 16324 31887185 In principle, changes in C. elegans phenotype or behavior associated with mutations related to SDH and HIF function could create models for high-throughput screening of compounds that suppress or exacerbate these characteristics in intact animals. ('exacerbate', 'PosReg', (196, 206)) ('behavior', 'MPA', (49, 57)) ('C. elegans', 'Species', '6239', (25, 35)) ('mutations', 'Var', (74, 83)) ('changes', 'Reg', (14, 21)) ('SDH', 'Gene', (95, 98)) 16326 31887185 Inspiration for a C. elegans model of the molecular changes associated with SDH-loss disorders such as PPGL came from the previous fascinating observation that mutation of egl-9(sa307), the C. elegans ortholog of human PHD, unexpectedly causes increased egg retention in hermaphrodite worms. ('mutation', 'Var', (160, 168)) ('human', 'Species', '9606', (213, 218)) ('hermaphrodite worms', 'Disease', 'MESH:D012734', (271, 290)) ('causes', 'Reg', (237, 243)) ('hermaphrodite worms', 'Disease', (271, 290)) ('C. elegans', 'Species', '6239', (18, 28)) ('egl-9', 'Gene', (172, 177)) ('C. elegans', 'Species', '6239', (190, 200)) ('egg retention', 'CPA', (254, 267)) ('SDH-loss', 'Gene', (76, 84)) ('egl-9', 'Gene', '179461', (172, 177)) ('increased', 'PosReg', (244, 253)) 16328 31887185 The egg-laying defect is HIF-1-dependent, as egl-9(sa307):hif-1(ia4) double mutants and hif-1(ia4) single mutants both exhibit normal egg laying behavior. ('egg laying behavior', 'CPA', (134, 153)) ('HIF-1', 'Gene', (25, 30)) ('hif-1(ia4', 'Gene', '180359', (58, 67)) ('egg-laying', 'CPA', (4, 14)) ('egl-9', 'Gene', (45, 50)) ('double mutants', 'Var', (69, 83)) ('hif-1(ia4', 'Gene', '180359', (88, 97)) ('egl-9', 'Gene', '179461', (45, 50)) ('HIF-1', 'Gene', '180359', (25, 30)) 16338 31887185 The C. elegans Punc-31 promoter was used to drive expression of Hif transgenes or RNA interference constructs for SDH subunit knockdown, allowing these effects to be limited to neurons known to be important for egg-laying. ('C. elegans', 'Species', '6239', (4, 14)) ('unc-31', 'Gene', (16, 22)) ('unc-31', 'Gene', '178233', (16, 22)) ('SDH', 'Gene', (114, 117)) ('knockdown', 'Var', (126, 135)) 16346 31887185 A second round of Gibson assembly was used to insert the sense and antisense sdhb-1 segments into the SbfI-linearized plasmid, forming an inverted repeat encoding a long RNA hairpin for RNA interference. ('antisense', 'Var', (67, 76)) ('sdhb-1', 'Gene', (77, 83)) ('sdhb-1', 'Gene', '174482', (77, 83)) 16359 31887185 Hermaphrodite worms homozygous for the egl-9(sa307) mutation retain eggs. ('eggs', 'CPA', (68, 72)) ('egl-9', 'Gene', '179461', (39, 44)) ('mutation', 'Var', (52, 60)) ('egl-9', 'Gene', (39, 44)) 16360 31887185 We found that Punc-31-driven expression of functional EGL-9 in egl-9(sa307) mutants significantly relieved egg retention from egl-9(sa307) mutant levels (P<2.62e-14) to near wild type levels (mean eggs per worm are 14.2 and 12.7 respectively; P = 0.007; Fig 1A). ('EGL-9', 'Gene', '179461', (54, 59)) ('egl-9', 'Gene', (126, 131)) ('egl-9', 'Gene', (63, 68)) ('egl-9', 'Gene', '179461', (126, 131)) ('EGL-9', 'Gene', (54, 59)) ('unc-31', 'Gene', (15, 21)) ('relieved', 'NegReg', (98, 106)) ('mutants', 'Var', (76, 83)) ('egl-9', 'Gene', '179461', (63, 68)) ('unc-31', 'Gene', '178233', (15, 21)) ('egg retention', 'CPA', (107, 120)) 16365 31887185 Interestingly, in contrast to Punc-31, we found that Ptdc-1-driven expression of functional hif-1(+) in egl-9(sa307):hif-1(ia4) mutants was inadequate to induce egg retention (data not shown). ('unc-31', 'Gene', (31, 37)) ('hif-1', 'Gene', '180359', (92, 97)) ('hif-1', 'Gene', (117, 122)) ('mutants', 'Var', (128, 135)) ('hif-1(ia4', 'Gene', '180359', (117, 126)) ('unc-31', 'Gene', '178233', (31, 37)) ('tdc-1', 'Gene', '174327', (54, 59)) ('egg retention', 'CPA', (161, 174)) ('egl-9', 'Gene', (104, 109)) ('hif-1', 'Gene', '180359', (117, 122)) ('tdc-1', 'Gene', (54, 59)) ('hif-1', 'Gene', (92, 97)) ('egl-9', 'Gene', '179461', (104, 109)) 16367 31887185 Based on these results, Punc-31 was chosen to drive cell-specific knockdown of SDHB-1 by RNA interference after injection of a plasmid containing an sdhb-1 inverted repeat (IR) under the control of Punc-31. ('unc-31', 'Gene', (25, 31)) ('SDHB-1', 'Gene', (79, 85)) ('unc-31', 'Gene', '178233', (25, 31)) ('sdhb-1', 'Gene', (149, 155)) ('RNA interference', 'MPA', (89, 105)) ('sdhb-1', 'Gene', '174482', (149, 155)) ('unc-31', 'Gene', '178233', (199, 205)) ('unc-31', 'Gene', (199, 205)) ('knockdown', 'Var', (66, 75)) ('SDHB-1', 'Gene', '174482', (79, 85)) 16368 31887185 Disruption of the SDH complex in unc-31-expressing cells is hypothesized to mimic essential biochemical phenotypes of SDH-loss disorders such as PPGL. ('unc-31', 'Gene', (33, 39)) ('SDH-loss', 'Gene', (118, 126)) ('unc-31', 'Gene', '178233', (33, 39)) ('PPGL', 'Disease', (145, 149)) ('Disruption', 'Var', (0, 10)) 16371 31887185 We hypothesize that SDH knockdown results in intracellular succinate accumulation, known to inhibit 2-ketoglutarate-dependent dioxygenases such as EGL-9. ('SDH', 'Gene', (20, 23)) ('EGL-9', 'Gene', '179461', (147, 152)) ('2-ketoglutarate-dependent dioxygenases', 'MPA', (100, 138)) ('intracellular succinate accumulation', 'MPA', (45, 81)) ('results in', 'Reg', (34, 44)) ('inhibit', 'NegReg', (92, 99)) ('2-ketoglutarate', 'Chemical', 'MESH:C029743', (100, 115)) ('oxygen', 'Chemical', 'MESH:D010100', (128, 134)) ('EGL-9', 'Gene', (147, 152)) ('knockdown', 'Var', (24, 33)) ('succinate', 'Chemical', 'MESH:D013386', (59, 68)) 16372 31887185 According to this model, EGL-9 inhibition prevents HIF-1 hydroxylation, stabilizing HIF-1 and promoting HIF-1 signaling and egg retention behavior in C. elegans. ('retention behavior', 'Disease', (128, 146)) ('EGL-9', 'Gene', (25, 30)) ('HIF-1', 'Gene', '180359', (104, 109)) ('HIF-1', 'Gene', '180359', (51, 56)) ('HIF-1', 'Gene', '180359', (84, 89)) ('HIF-1', 'Gene', (104, 109)) ('promoting', 'PosReg', (94, 103)) ('HIF-1', 'Gene', (51, 56)) ('HIF-1', 'Gene', (84, 89)) ('EGL-9', 'Gene', '179461', (25, 30)) ('inhibition', 'Var', (31, 41)) ('retention behavior', 'Disease', 'MESH:D016055', (128, 146)) ('C. elegans', 'Species', '6239', (150, 160)) 16373 31887185 We note that global succinate accumulation in whole worms is not expected for SDH knockdown under these conditions, as effects would be limited to the small subset of cells where Punc-31 is active. ('SDH', 'Gene', (78, 81)) ('unc-31', 'Gene', (180, 186)) ('unc-31', 'Gene', '178233', (180, 186)) ('knockdown', 'Var', (82, 91)) ('succinate', 'Chemical', 'MESH:D013386', (20, 29)) 16376 31887185 Previous studies have shown that mammalian cells treated with DMOG show an increase in transcription of HIF-1-responsive genes. ('HIF-1', 'Gene', '180359', (104, 109)) ('DMOG', 'Var', (62, 66)) ('HIF-1', 'Gene', (104, 109)) ('mammalian', 'Species', '9606', (33, 42)) ('transcription', 'MPA', (87, 100)) ('DMOG', 'Chemical', 'None', (62, 66)) ('increase', 'PosReg', (75, 83)) 16377 31887185 Consistent with our observations for sdhb-1 knockdown, treatment of C. elegans hermaphrodites with DMOG induced egg retention in wild type N2 worms, but not in hif-1(ia4) worms (Fig 3). ('C. elegans', 'Species', '6239', (68, 78)) ('DMOG', 'Chemical', 'None', (99, 103)) ('egg retention', 'CPA', (112, 125)) ('sdhb-1', 'Gene', (37, 43)) ('hif-1(ia4', 'Gene', '180359', (160, 169)) ('sdhb-1', 'Gene', '174482', (37, 43)) ('DMOG', 'Var', (99, 103)) 16379 31887185 Second, the inability of DMOG to affect egg laying in hif-1(ia4) mutants demonstrates the HIF-1-dependence of this chemical mechanism of egg retention in N2 worms. ('HIF-1', 'Gene', '180359', (90, 95)) ('mutants', 'Var', (65, 72)) ('DMOG', 'Chemical', 'None', (25, 29)) ('egg laying', 'CPA', (40, 50)) ('HIF-1', 'Gene', (90, 95)) ('hif-1(ia4', 'Gene', '180359', (54, 63)) 16380 31887185 This observation supports a model attributing egg retention in N2 worms to increased HIF-1 signaling resulting from DMOG inhibition of EGL-9. ('DMOG', 'Chemical', 'None', (116, 120)) ('EGL-9', 'Gene', (135, 140)) ('egg retention', 'CPA', (46, 59)) ('increased HIF-1', 'Phenotype', 'HP:0030269', (75, 90)) ('DMOG', 'Var', (116, 120)) ('EGL-9', 'Gene', '179461', (135, 140)) ('HIF-1', 'Gene', '180359', (85, 90)) ('increased', 'PosReg', (75, 84)) ('HIF-1', 'Gene', (85, 90)) 16383 31887185 As hypothesized, DMOG treatment was observed to increase the girth of worms, and this effect was dose-dependent (Fig 4A). ('DMOG', 'Var', (17, 21)) ('DMOG', 'Chemical', 'None', (17, 21)) ('girth of worms', 'CPA', (61, 75)) ('increase', 'PosReg', (48, 56)) 16385 31887185 Thus, DMOG-treated worms were both wider and shorter than normal as evidenced by a reproducible dose-dependent decrease in width:length ratio (Fig 4C). ('DMOG-treated', 'Var', (6, 18)) ('shorter', 'NegReg', (45, 52)) ('DMOG', 'Chemical', 'None', (6, 10)) ('width:length ratio', 'MPA', (123, 141)) ('decrease', 'NegReg', (111, 119)) 16395 31887185 We further show that worm body morphology changes in a dose-dependent manner with DMOG treatment, paralleling egg retention, and providing a possible future approach for high-content image screening of worm phenotypes if the methodologies can be optimized. ('worm body morphology', 'CPA', (21, 41)) ('DMOG', 'Var', (82, 86)) ('DMOG', 'Chemical', 'None', (82, 86)) ('changes', 'Reg', (42, 49)) 16482 31355591 In the case of pheochromocytoma located on a side wall nearby a ureteral orifice or distal part of the ureter, resection of the leasion may compel ureteral reimplantation into a normal bladder wall. ('pheochromocytoma', 'Disease', (15, 31)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (15, 31)) ('resection', 'Var', (111, 120)) ('compel', 'NegReg', (140, 146)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (15, 31)) ('ureteral reimplantation into a normal bladder wall', 'CPA', (147, 197)) 16519 30170467 Genetic investigation was negative for RET, VHL, SDHB, SDHC, SDHD mutations. ('mutations', 'Var', (66, 75)) ('SDHB', 'Gene', (49, 53)) ('RET', 'Gene', (39, 42)) ('VHL', 'Disease', 'MESH:D006623', (44, 47)) ('SDHD', 'Gene', '6392', (61, 65)) ('SDHC', 'Gene', (55, 59)) ('SDHD', 'Gene', (61, 65)) ('RET', 'Gene', '5979', (39, 42)) ('SDHC', 'Gene', '6391', (55, 59)) ('SDHB', 'Gene', '6390', (49, 53)) ('VHL', 'Disease', (44, 47)) 16577 30170467 The improved survival benefited from reducing the tumor burden, decompressing the spinal stenosis to alleviate radiculopathy, and facilitating subsequent chemotherapy and radiation therapy. ('radiculopathy', 'Disease', 'MESH:D011843', (111, 124)) ('radiculopathy', 'Disease', (111, 124)) ('spinal stenosis', 'Disease', (82, 97)) ('spinal stenosis', 'Disease', 'MESH:D013130', (82, 97)) ('tumor', 'Disease', 'MESH:D009369', (50, 55)) ('spinal stenosis', 'Phenotype', 'HP:0003416', (82, 97)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('decompressing', 'Var', (64, 77)) ('tumor', 'Disease', (50, 55)) 16646 30641325 Nonspecific alpha-antagonists such as phentolamine and phenoxybenzamine are commonly used for vasoconstrictive blockade and reduce complications from malignant hypertension to less than 3%. ('hypertension', 'Disease', (160, 172)) ('phentolamine', 'Chemical', 'MESH:D010646', (38, 50)) ('hypertension', 'Phenotype', 'HP:0000822', (160, 172)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (55, 71)) ('phentolamine', 'Var', (38, 50)) ('hypertension', 'Disease', 'MESH:D006973', (160, 172)) ('vasoconstrictive blockade', 'MPA', (94, 119)) ('reduce', 'NegReg', (124, 130)) ('phenoxybenzamine', 'Var', (55, 71)) 16671 30464530 Moreover, the high HOXD-AS1 expression indicated a poor overall survival (OS) rate and can be an independent predictive factor for OS. ('overall survival', 'MPA', (56, 72)) ('expression', 'MPA', (28, 38)) ('HOXD-AS1', 'Gene', (19, 27)) ('high', 'Var', (14, 18)) ('poor', 'NegReg', (51, 55)) ('HOXD-AS1', 'Gene', '401022', (19, 27)) 16672 30464530 The TCGA dataset, which included 9,502 cancer patients, showed that the expression of HOXD-AS1 was related to poor OS and disease-free survival. ('disease-free survival', 'CPA', (122, 143)) ('patients', 'Species', '9606', (46, 54)) ('poor', 'Disease', (110, 114)) ('cancer', 'Disease', (39, 45)) ('related', 'Reg', (99, 106)) ('cancer', 'Disease', 'MESH:D009369', (39, 45)) ('HOXD-AS1', 'Gene', (86, 94)) ('HOXD-AS1', 'Gene', '401022', (86, 94)) ('cancer', 'Phenotype', 'HP:0002664', (39, 45)) ('expression', 'Var', (72, 82)) 16702 30464530 Therefore, our results indicated that the high HOXD-AS1 expression significantly increased the risk of worse clinicopathologic features. ('high', 'Var', (42, 46)) ('HOXD-AS1', 'Gene', (47, 55)) ('HOXD-AS1', 'Gene', '401022', (47, 55)) 16707 30464530 As shown in Table 3, all of the subgroup analyses demonstrated that the expression of HOXD-AS1 was related to worse OS according to sample size (Figure 5B), NOS score (Figure 5C), and HR estimation method (Figure 5D). ('expression', 'Var', (72, 82)) ('worse OS', 'Disease', (110, 118)) ('HOXD-AS1', 'Gene', (86, 94)) ('HOXD-AS1', 'Gene', '401022', (86, 94)) 16708 30464530 However, the subgroup analysis for tumor type indicated that the expression of HOXD-AS1 was only related to a worse OS in the digestive system (HR = 1.59, 95% CI = [1.25, 1.93], P<0.001, fixed effect, Figure 5A). ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('HOXD-AS1', 'Gene', (79, 87)) ('HOXD-AS1', 'Gene', '401022', (79, 87)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('tumor', 'Disease', (35, 40)) ('expression', 'Var', (65, 75)) 16711 30464530 The pooled results reported that the expression of HOXD-AS1 was an independent prognostic factor for the OS of patients (HR = 1.66, 95% CI = [1.12, 2.20], P<0.001, fixed effect, Figure 5B). ('HOXD-AS1', 'Gene', (51, 59)) ('expression', 'Var', (37, 47)) ('HOXD-AS1', 'Gene', '401022', (51, 59)) ('OS of', 'Disease', (105, 110)) ('patients', 'Species', '9606', (111, 119)) 16717 30464530 The results indicated that the high expression of HOXD-AS1 denoted a worse OS (Figure 7A) and DFS (Figure 7B), confirming that an upregulated expression of HOXD-AS1 was associated with OS and DFS in cancer patients. ('upregulated', 'PosReg', (130, 141)) ('cancer', 'Phenotype', 'HP:0002664', (199, 205)) ('DFS', 'Disease', (192, 195)) ('DFS', 'CPA', (94, 97)) ('HOXD-AS1', 'Gene', (156, 164)) ('cancer', 'Disease', 'MESH:D009369', (199, 205)) ('HOXD-AS1', 'Gene', '401022', (156, 164)) ('HOXD-AS1', 'Gene', (50, 58)) ('patients', 'Species', '9606', (206, 214)) ('cancer', 'Disease', (199, 205)) ('expression', 'MPA', (142, 152)) ('high', 'Var', (31, 35)) ('HOXD-AS1', 'Gene', '401022', (50, 58)) 16722 30464530 On the contrary, the expression of HOXD-AS1 was associated with DFS in the female reproductive system (Figure 7N). ('HOXD-AS1', 'Gene', (35, 43)) ('HOXD-AS1', 'Gene', '401022', (35, 43)) ('DFS', 'Disease', (64, 67)) ('associated', 'Reg', (48, 58)) ('expression', 'Var', (21, 31)) 16725 30464530 The results indicated that the risk of lymph node metastasis in high expression was 2.69 times higher than those in low HOXD-AS1 expression. ('high expression', 'Var', (64, 79)) ('HOXD-AS1', 'Gene', (120, 128)) ('HOXD-AS1', 'Gene', '401022', (120, 128)) ('lymph node metastasis', 'CPA', (39, 60)) 16727 30464530 The pooled results showed that the high expression of HOXD-AS1 was related to a worse OS, and HOXD-AS1 could be an independent role for the prognosis of cancers. ('cancers', 'Disease', 'MESH:D009369', (153, 160)) ('related', 'Reg', (67, 74)) ('cancers', 'Disease', (153, 160)) ('HOXD-AS1', 'Gene', (94, 102)) ('worse OS', 'Disease', (80, 88)) ('cancer', 'Phenotype', 'HP:0002664', (153, 159)) ('HOXD-AS1', 'Gene', (54, 62)) ('HOXD-AS1', 'Gene', '401022', (94, 102)) ('HOXD-AS1', 'Gene', '401022', (54, 62)) ('cancers', 'Phenotype', 'HP:0002664', (153, 160)) ('high', 'Var', (35, 39)) 16733 30464530 Further, Wang et al indicated that the knockdown of HOXD-AS1 inhibited migration and invasion, and HOXD-AS1 could competitively bind to miR-130a-3p to prevent SOX4. ('HOXD-AS1', 'Gene', '401022', (99, 107)) ('SOX4', 'Gene', (159, 163)) ('bind', 'Interaction', (128, 132)) ('inhibited', 'NegReg', (61, 70)) ('HOXD-AS1', 'Gene', (52, 60)) ('knockdown', 'Var', (39, 48)) ('SOX4', 'Gene', '6659', (159, 163)) ('miR', 'Gene', '220972', (136, 139)) ('HOXD-AS1', 'Gene', '401022', (52, 60)) ('miR', 'Gene', (136, 139)) ('prevent', 'NegReg', (151, 158)) ('HOXD-AS1', 'Gene', (99, 107)) 16739 30464530 Xia et al reported that miR-133b was a downstream target of HOXD-AS1, and a knockdown of HOXD-AS1 could inhibit the proliferation, migration, and invasion of non-small-cell lung cancer cells. ('HOXD-AS1', 'Gene', '401022', (89, 97)) ('miR-133b', 'Gene', '442890', (24, 32)) ('cancer', 'Phenotype', 'HP:0002664', (178, 184)) ('migration', 'CPA', (131, 140)) ('knockdown', 'Var', (76, 85)) ('lung cancer', 'Disease', 'MESH:D008175', (173, 184)) ('non-small-cell lung cancer', 'Phenotype', 'HP:0030358', (158, 184)) ('miR-133b', 'Gene', (24, 32)) ('invasion', 'CPA', (146, 154)) ('small-cell lung cancer', 'Phenotype', 'HP:0030357', (162, 184)) ('HOXD-AS1', 'Gene', (60, 68)) ('proliferation', 'CPA', (116, 129)) ('inhibit', 'NegReg', (104, 111)) ('HOXD-AS1', 'Gene', '401022', (60, 68)) ('lung cancer', 'Disease', (173, 184)) ('lung cancer', 'Phenotype', 'HP:0100526', (173, 184)) ('HOXD-AS1', 'Gene', (89, 97)) 16747 30464530 Despite the above limitations, this meta-analysis concluded that the high expression of HOXD-AS1 was associated with large tumor size, lower differentiation, increased lymph node metastasis, and advanced TNM stage. ('expression', 'MPA', (74, 84)) ('TNM', 'Gene', (204, 207)) ('tumor', 'Disease', (123, 128)) ('HOXD-AS1', 'Gene', (88, 96)) ('lower', 'NegReg', (135, 140)) ('high', 'Var', (69, 73)) ('tumor', 'Disease', 'MESH:D009369', (123, 128)) ('TNM', 'Gene', '10178', (204, 207)) ('HOXD-AS1', 'Gene', '401022', (88, 96)) ('lymph node metastasis', 'CPA', (168, 189)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('increased', 'PosReg', (158, 167)) 16762 28078324 The highest rate of metastases occurs in hereditary PGL syndromes and is associated with mutations of genes of the succinate dehydrogenase complex (SDH gene). ('hereditary PGL syndromes', 'Disease', (41, 65)) ('SDH gene', 'Gene', (148, 156)) ('associated', 'Reg', (73, 83)) ('hereditary PGL syndromes', 'Disease', 'MESH:D010235', (41, 65)) ('mutations', 'Var', (89, 98)) ('metastases', 'Disease', (20, 30)) ('PGL', 'Phenotype', 'HP:0002668', (52, 55)) ('metastases', 'Disease', 'MESH:D009362', (20, 30)) 16837 22399235 PPGLs occur sporadically or in association with familial poly-tumor syndromes: multiple endocrine neoplasia type 2 (MEN2); von Hippel-Lindau (VHL) syndrome; neurofibromatosis type 1 (NF1); and paraganglioma syndromes associated with mutations of genes encoding subunits of the succinate dehydrogenase (SDH) complex, in particular subunits B (SDHB) and D (SDHD). ('NF1', 'Gene', (183, 186)) ('neurofibromatosis type 1', 'Gene', (157, 181)) ('von Hippel-Lindau (VHL) syndrome', 'Disease', 'MESH:D006623', (123, 155)) ('endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (88, 114)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (157, 174)) ('SDHB', 'Gene', (342, 346)) ('SDH', 'Gene', '6390', (342, 345)) ('neoplasia', 'Phenotype', 'HP:0002664', (98, 107)) ('succinate dehydrogenase', 'Gene', '6390', (277, 300)) ('endocrine neoplasia type 2', 'Disease', (88, 114)) ('tumor', 'Phenotype', 'HP:0002664', (62, 67)) ('SDH', 'Gene', '6390', (302, 305)) ('PPGLs', 'Chemical', '-', (0, 5)) ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (193, 216)) ('paraganglioma syndromes', 'Disease', (193, 216)) ('SDHD', 'Gene', '6392', (355, 359)) ('neurofibromatosis type 1', 'Gene', '4763', (157, 181)) ('paraganglioma', 'Phenotype', 'HP:0002668', (193, 206)) ('SDH', 'Gene', (342, 345)) ('SDH', 'Gene', '6390', (355, 358)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (88, 107)) ('SDH', 'Gene', (302, 305)) ('SDHD', 'Gene', (355, 359)) ('succinate dehydrogenase', 'Gene', (277, 300)) ('NF1', 'Gene', '4763', (183, 186)) ('associated', 'Reg', (217, 227)) ('SDHB', 'Gene', '6390', (342, 346)) ('tumor', 'Disease', (62, 67)) ('mutations', 'Var', (233, 242)) ('SDH', 'Gene', (355, 358)) ('tumor', 'Disease', 'MESH:D009369', (62, 67)) 16838 22399235 Reported frequencies of germline mutations of the above genes among patients with PPGLs range from 27 % to 32 %, and are likely to increase as further tumor susceptibility genes are identified. ('PPGLs', 'Chemical', '-', (82, 87)) ('tumor', 'Phenotype', 'HP:0002664', (151, 156)) ('PPGLs', 'Gene', (82, 87)) ('tumor', 'Disease', (151, 156)) ('patients', 'Species', '9606', (68, 76)) ('germline mutations', 'Var', (24, 42)) ('tumor', 'Disease', 'MESH:D009369', (151, 156)) 16839 22399235 Most recently, mutations of genes encoding the SDH complex assembly factor 2 (SDHAF2), transmembrane protein 127 (TMEM127), SDHA, and MYC associated factor X (MAX) have been identified as further hereditary causes of PPGLs, ranking PPGLs as tumors most commonly associated with known gene mutations [ - ]. ('transmembrane protein 127', 'Gene', (87, 112)) ('TMEM127', 'Gene', '55654', (114, 121)) ('tumors', 'Disease', 'MESH:D009369', (241, 247)) ('PPGLs', 'Chemical', '-', (217, 222)) ('causes', 'Reg', (207, 213)) ('PPGLs', 'Chemical', '-', (232, 237)) ('MAX', 'Gene', (159, 162)) ('mutations', 'Var', (15, 24)) ('SDH complex assembly factor 2', 'Gene', '54949', (47, 76)) ('SDHA', 'Gene', (78, 82)) ('SDHA', 'Gene', (124, 128)) ('tumors', 'Phenotype', 'HP:0002664', (241, 247)) ('SDHA', 'Gene', '6389', (78, 82)) ('MYC associated factor X', 'Gene', (134, 157)) ('SDHAF2', 'Gene', '54949', (78, 84)) ('SDHAF2', 'Gene', (78, 84)) ('SDHA', 'Gene', '6389', (124, 128)) ('tumor', 'Phenotype', 'HP:0002664', (241, 246)) ('PPGLs', 'Disease', (217, 222)) ('MAX', 'Gene', '4149', (159, 162)) ('TMEM127', 'Gene', (114, 121)) ('tumors', 'Disease', (241, 247)) ('MYC associated factor X', 'Gene', '4149', (134, 157)) ('transmembrane protein 127', 'Gene', '55654', (87, 112)) ('SDH complex assembly factor 2', 'Gene', (47, 76)) 16840 22399235 It is important to note that PPGLs with an underlying SDHB mutation are strongly associated with an aggressive behavior and the development of metastatic disease. ('aggressive behavior', 'Phenotype', 'HP:0000718', (100, 119)) ('associated with', 'Reg', (81, 96)) ('PPGLs', 'Chemical', '-', (29, 34)) ('SDHB', 'Gene', '6390', (54, 58)) ('SDHB', 'Gene', (54, 58)) ('metastatic disease', 'CPA', (143, 161)) ('mutation', 'Var', (59, 67)) ('aggressive behavior', 'CPA', (100, 119)) 16877 22399235 The use of 123I-MIBG is preferred over 131I-MIBG because of its higher sensitivity, lower radiation exposure, and improved imaging quality with SPECT. ('imaging', 'MPA', (123, 130)) ('improved', 'PosReg', (114, 122)) ('123I-MIBG', 'Var', (11, 20)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (11, 20)) ('sensitivity', 'MPA', (71, 82)) ('131I-MIBG', 'Chemical', '-', (39, 48)) 16899 22399235 The sensitivity of somatostatin receptor scintigraphy with 111In-DTPA-pentetreotide is lower than that of 123I/131I-MIBG in PPGLs [ - ]. ('lower', 'NegReg', (87, 92)) ('111In-DTPA-pentetreotide', 'Var', (59, 83)) ('PPGLs', 'Chemical', '-', (124, 129)) ('111In-DTPA-pentetreotide', 'Chemical', 'MESH:C452379', (59, 83)) 16913 22399235 SDHB mutations can lead to complete loss of SDH enzymatic activity in malignant PPGL, with upregulation of hypoxic-angiogenetic responsive genes. ('SDH', 'Gene', (44, 47)) ('PPGL', 'Chemical', '-', (80, 84)) ('upregulation', 'PosReg', (91, 103)) ('SDH', 'Gene', (0, 3)) ('loss', 'NegReg', (36, 40)) ('mutations', 'Var', (5, 14)) ('SDH', 'Gene', '6390', (44, 47)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) ('hypoxic-angiogenetic', 'MPA', (107, 127)) ('SDH', 'Gene', '6390', (0, 3)) 16975 26512333 It is recommended that patients with genetic cancer susceptibility conditions, such as medullary thyroid cancer or pheochromocytoma, and all patients with a personal history or family history of MEN 2 syndrome, should be offered germline RET mutation screening along with pre- and post-test genetic counseling. ('genetic cancer', 'Disease', (37, 51)) ('cancer', 'Phenotype', 'HP:0002664', (45, 51)) ('MEN 2 syndrome', 'Disease', (195, 209)) ('pheochromocytoma', 'Disease', (115, 131)) ('thyroid cancer', 'Disease', (97, 111)) ('RET', 'Gene', '5979', (238, 241)) ('MEN 2 syndrome', 'Disease', 'MESH:D018813', (195, 209)) ('patients', 'Species', '9606', (23, 31)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (115, 131)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (87, 111)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (97, 111)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (115, 131)) ('thyroid cancer', 'Disease', 'MESH:D013964', (97, 111)) ('cancer', 'Phenotype', 'HP:0002664', (105, 111)) ('RET', 'Gene', (238, 241)) ('genetic cancer', 'Disease', 'MESH:D030342', (37, 51)) ('patients', 'Species', '9606', (141, 149)) ('mutation', 'Var', (242, 250)) 17000 23401807 Subsequent referral for genetic testing and sequencing of the von Hippel-Lindau gene showed a deleterious mutation (R167Q). ('R167Q', 'Mutation', 'rs147297806', (116, 121)) ('von Hippel-Lindau', 'Disease', (62, 79)) ('R167Q', 'Var', (116, 121)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (62, 79)) 17015 23401807 If CAH is suspected, screening for adrenal insufficiency as well as mutation analysis for CYP21B is recommended. ('CAH', 'Phenotype', 'HP:0008258', (3, 6)) ('adrenal insufficiency', 'Disease', (35, 56)) ('mutation analysis', 'Var', (68, 85)) ('CAH', 'Disease', (3, 6)) ('CYP21B', 'Gene', '1589', (90, 96)) ('CYP21B', 'Gene', (90, 96)) ('adrenal insufficiency', 'Phenotype', 'HP:0000846', (35, 56)) ('adrenal insufficiency', 'Disease', 'MESH:D000309', (35, 56)) 17018 23401807 Genetic syndromes of pheochromocytoma include multiple endocrine neoplasia type 2 (MEN2A and 2B), neurofibromatosis type 1 (NF1), the pheochromocytoma-paraganglioma syndrome (mutation of the SDHB or SDHD genes), and von Hippel-Lindau syndrome (VHL). ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (216, 242)) ('SDHB', 'Gene', (191, 195)) ('pheochromocytoma', 'Disease', (134, 150)) ('pheochromocytoma', 'Disease', (21, 37)) ('SDHD', 'Gene', '6392', (199, 203)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (21, 37)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (134, 150)) ('NF1', 'Gene', '4763', (124, 127)) ('von Hippel-Lindau syndrome', 'Disease', (216, 242)) ('neoplasia', 'Phenotype', 'HP:0002664', (65, 74)) ('VHL', 'Disease', 'MESH:D006623', (244, 247)) ('paraganglioma', 'Phenotype', 'HP:0002668', (151, 164)) ('pheochromocytoma-paraganglioma syndrome', 'Disease', (134, 173)) ('MEN2A and 2B', 'Gene', '5979', (83, 95)) ('SDHD', 'Gene', (199, 203)) ('NF1', 'Gene', (124, 127)) ('neurofibromatosis type 1', 'Gene', (98, 122)) ('mutation', 'Var', (175, 183)) ('endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (55, 81)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (98, 115)) ('SDHB', 'Gene', '6390', (191, 195)) ('endocrine neoplasia type 2', 'Disease', (55, 81)) ('pheochromocytoma-paraganglioma syndrome', 'Disease', 'MESH:D010673', (134, 173)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (55, 74)) ('VHL', 'Disease', (244, 247)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (134, 150)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (21, 37)) ('neurofibromatosis type 1', 'Gene', '4763', (98, 122)) 17021 23401807 Mutations in the SDHB or SDHD genes predispose patients to glomus tumors and occasionally pheochromocytomas. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (90, 107)) ('patients', 'Species', '9606', (47, 55)) ('SDHB', 'Gene', '6390', (17, 21)) ('tumors', 'Phenotype', 'HP:0002664', (66, 72)) ('SDHB', 'Gene', (17, 21)) ('Mutations', 'Var', (0, 9)) ('glomus tumors', 'Disease', 'MESH:D005918', (59, 72)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (90, 107)) ('SDHD', 'Gene', '6392', (25, 29)) ('pheochromocytomas', 'Disease', (90, 107)) ('predispose', 'Reg', (36, 46)) ('SDHD', 'Gene', (25, 29)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (90, 106)) ('glomus tumors', 'Disease', (59, 72)) 17022 23401807 Patients with bilateral pheochromocytoma should be screened for mutations in the genes associated with the above syndromes depending on the clinical presentation and family history (Table 1). ('bilateral pheochromocytoma', 'Disease', (14, 40)) ('bilateral pheochromocytoma', 'Disease', 'MESH:D010673', (14, 40)) ('Patients', 'Species', '9606', (0, 8)) ('mutations', 'Var', (64, 73)) ('screened', 'Reg', (51, 59)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (24, 40)) 17067 22787353 A neuroendocrine work-up for the para-aortic mass demonstrated a normal catecholamine metabolites, normetanephrine (329 mcg/24 hours [reference range: 88-649 mcg/24 hours]) and metenephrine (164 mcg/24 hours [reference range: 58-203 mcg/24 hours]) on 24-hour urine. ('164 mcg/24', 'Var', (191, 201)) ('metenephrine', 'Chemical', '-', (177, 189)) ('catecholamine metabolites', 'MPA', (72, 97)) ('normetanephrine', 'MPA', (99, 114)) ('normetanephrine', 'Chemical', 'MESH:D009647', (99, 114)) ('catecholamine', 'Chemical', 'MESH:D002395', (72, 85)) ('metenephrine', 'MPA', (177, 189)) 17083 22787353 Treatment of associated hypertension is with phenoxybenzamine, an irreversible alpha-blocker with a long half-life. ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (45, 61)) ('hypertension', 'Disease', 'MESH:D006973', (24, 36)) ('phenoxybenzamine', 'Var', (45, 61)) ('hypertension', 'Disease', (24, 36)) ('hypertension', 'Phenotype', 'HP:0000822', (24, 36)) 17092 21082267 The identification of the first gene related to paraganglioma, SDHD, encoding a subunit of mitochondrial succinate dehydrogenase (SDH), was quickly followed by the identification of mutations in SDHC and SDHB. ('succinate dehydrogenase', 'Gene', '6389', (105, 128)) ('paraganglioma', 'Phenotype', 'HP:0002668', (48, 61)) ('SDH', 'Gene', (195, 198)) ('SDHD', 'Gene', '6392', (63, 67)) ('succinate dehydrogenase', 'Gene', (105, 128)) ('SDHC', 'Gene', (195, 199)) ('SDH', 'Gene', '6390', (63, 66)) ('SDH', 'Gene', (130, 133)) ('SDHB', 'Gene', '6390', (204, 208)) ('SDHD', 'Gene', (63, 67)) ('mutations', 'Var', (182, 191)) ('SDHB', 'Gene', (204, 208)) ('SDH', 'Gene', (63, 66)) ('SDH', 'Gene', '6390', (204, 207)) ('paraganglioma', 'Disease', (48, 61)) ('SDH', 'Gene', '6390', (195, 198)) ('paraganglioma', 'Disease', 'MESH:D010235', (48, 61)) ('SDHC', 'Gene', '6391', (195, 199)) ('SDH', 'Gene', '6390', (130, 133)) ('SDH', 'Gene', (204, 207)) 17098 21082267 In addition to these recent discoveries, new techniques related to mutation analysis, including genetic analysis algorithms, SDHB immunohistochemistry, and deletion analysis by MLPA have improved the efficiency and accuracy of genetic analysis. ('MLPA', 'Gene', (177, 181)) ('SDHB', 'Gene', (125, 129)) ('improved', 'PosReg', (187, 195)) ('deletion analysis', 'Var', (156, 173)) ('SDHB', 'Gene', '6390', (125, 129)) 17099 21082267 However, many intriguing questions remain, such as the striking differences in the clinical phenotype of genes that encode proteins with an apparently very close functional relationship, and the lack of expression of SDHD and SDHAF2 mutations when inherited via the maternal line. ('SDHAF2', 'Gene', (226, 232)) ('SDHD', 'Gene', (217, 221)) ('mutations', 'Var', (233, 242)) ('SDHD', 'Gene', '6392', (217, 221)) ('SDHAF2', 'Gene', '54949', (226, 232)) 17101 21082267 Prior to the year 2000, knowledge of the genetics of paraganglioma and pheochromocytoma was confined to mutations of the VHL, RET and NF1 genes. ('VHL', 'Gene', '7428', (121, 124)) ('mutations', 'Var', (104, 113)) ('paraganglioma', 'Disease', (53, 66)) ('pheochromocytoma', 'Disease', (71, 87)) ('NF1', 'Gene', (134, 137)) ('RET', 'Gene', (126, 129)) ('paraganglioma', 'Disease', 'MESH:D010235', (53, 66)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (71, 87)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (71, 87)) ('NF1', 'Gene', '4763', (134, 137)) ('VHL', 'Gene', (121, 124)) ('RET', 'Gene', '5979', (126, 129)) ('paraganglioma', 'Phenotype', 'HP:0002668', (53, 66)) 17102 21082267 The identification of mutations in the succinate dehydrogenase subunit D gene (SDHD) in patients with head and neck paraganglioma was therefore a major breakthrough. ('neck paraganglioma', 'Disease', 'MESH:D010235', (111, 129)) ('paraganglioma', 'Phenotype', 'HP:0002668', (116, 129)) ('SDHD', 'Gene', '6392', (79, 83)) ('succinate dehydrogenase', 'Gene', '6389', (39, 62)) ('patients', 'Species', '9606', (88, 96)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (102, 129)) ('mutations', 'Var', (22, 31)) ('neck paraganglioma', 'Disease', (111, 129)) ('SDHD', 'Gene', (79, 83)) ('succinate dehydrogenase', 'Gene', (39, 62)) 17103 21082267 The association of paraganglioma with mutations in SDHD, and later with mutations in other SDH subunits, has helped elucidate both the role of the mitochondrial SDH complex and intermediary metabolism in tumorigenesis. ('SDH', 'Gene', '6390', (51, 54)) ('SDH', 'Gene', (91, 94)) ('tumor', 'Disease', 'MESH:D009369', (204, 209)) ('paraganglioma', 'Disease', (19, 32)) ('paraganglioma', 'Phenotype', 'HP:0002668', (19, 32)) ('association', 'Interaction', (4, 15)) ('SDH', 'Gene', (161, 164)) ('tumor', 'Phenotype', 'HP:0002664', (204, 209)) ('SDH', 'Gene', '6390', (91, 94)) ('paraganglioma', 'Disease', 'MESH:D010235', (19, 32)) ('SDH', 'Gene', (51, 54)) ('tumor', 'Disease', (204, 209)) ('SDHD', 'Gene', '6392', (51, 55)) ('mutations', 'Var', (38, 47)) ('SDHD', 'Gene', (51, 55)) ('SDH', 'Gene', '6390', (161, 164)) 17104 21082267 The subsequent discovery of SDH mutations in patients with pheochromocytomas and extra-adrenal paragangliomas led to a recognition that paragangliomas and pheochromocytomas share not only similar cellular origins, but can also have a comparable genetic basis. ('paraganglioma', 'Phenotype', 'HP:0002668', (136, 149)) ('paragangliomas', 'Phenotype', 'HP:0002668', (136, 150)) ('SDH', 'Gene', (28, 31)) ('patients', 'Species', '9606', (45, 53)) ('paragangliomas', 'Disease', 'MESH:D010235', (95, 109)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (155, 171)) ('paragangliomas', 'Phenotype', 'HP:0002668', (95, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (95, 108)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (81, 109)) ('mutations', 'Var', (32, 41)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (59, 75)) ('paragangliomas', 'Disease', (136, 150)) ('extra-adrenal paragangliomas', 'Disease', (81, 109)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (59, 76)) ('pheochromocytomas', 'Disease', (59, 76)) ('pheochromocytomas', 'Disease', (155, 172)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (155, 172)) ('paragangliomas', 'Disease', (95, 109)) ('SDH', 'Gene', '6390', (28, 31)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (59, 76)) ('paragangliomas', 'Disease', 'MESH:D010235', (136, 150)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (155, 172)) 17111 21082267 Presently, causative gene mutations can be identified in around 32% of paraganglioma-pheochromocytomas. ('paraganglioma-pheochromocytomas', 'Disease', (71, 102)) ('mutations', 'Var', (26, 35)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (85, 102)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (85, 101)) ('paraganglioma', 'Phenotype', 'HP:0002668', (71, 84)) ('paraganglioma-pheochromocytomas', 'Disease', 'MESH:D010673', (71, 102)) 17112 21082267 Hereditary tumor syndromes which have pheochromocytoma within their spectrum include the multiple endocrine neoplasia syndromes, MEN2A and MEN2B, caused by mutations of the RET (Rearranged in Transfection) proto-oncogene, subtypes of von Hippel-Lindau (VHL) disease, caused by mutations of the VHL tumor suppressor gene, and neurofibromatosis type 1 (NF1) resulting from mutations of the NF1 tumor suppressor gene. ('caused by', 'Reg', (146, 155)) ('neoplasia', 'Phenotype', 'HP:0002664', (108, 117)) ('tumor syndromes', 'Disease', (11, 26)) ('tumor', 'Disease', (392, 397)) ('multiple endocrine neoplasia syndromes', 'Disease', 'MESH:D009377', (89, 127)) ('MEN2B', 'Gene', (139, 144)) ('NF1', 'Gene', (388, 391)) ('pheochromocytoma', 'Disease', (38, 54)) ('von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (234, 265)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (325, 342)) ('MEN2B', 'Gene', '5979', (139, 144)) ('neurofibromatosis type 1', 'Gene', '4763', (325, 349)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (38, 54)) ('tumor', 'Disease', 'MESH:D009369', (392, 397)) ('Rearranged in Transfection', 'Gene', (178, 204)) ('tumor', 'Disease', (298, 303)) ('RET', 'Gene', '5979', (173, 176)) ('tumor', 'Disease', (11, 16)) ('VHL tumor', 'Disease', (294, 303)) ('mutations', 'Var', (277, 286)) ('tumor', 'Disease', 'MESH:D009369', (298, 303)) ('mutations', 'Var', (371, 380)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (98, 117)) ('VHL tumor', 'Disease', 'MESH:D006623', (294, 303)) ('tumor syndromes', 'Disease', 'MESH:D009369', (11, 26)) ('MEN2A', 'Gene', (129, 134)) ('tumor', 'Disease', 'MESH:D009369', (11, 16)) ('MEN2A', 'Gene', '5979', (129, 134)) ('tumor', 'Phenotype', 'HP:0002664', (392, 397)) ('mutations', 'Var', (156, 165)) ('tumor', 'Phenotype', 'HP:0002664', (298, 303)) ('RET', 'Gene', (173, 176)) ('NF1', 'Gene', '4763', (351, 354)) ('tumor', 'Phenotype', 'HP:0002664', (11, 16)) ('neurofibromatosis type 1', 'Gene', (325, 349)) ('Hereditary tumor', 'Disease', (0, 16)) ('caused by', 'Reg', (267, 276)) ('multiple endocrine neoplasia syndromes', 'Disease', (89, 127)) ('Rearranged in Transfection', 'Gene', '5979', (178, 204)) ('Hereditary tumor', 'Disease', 'MESH:D009386', (0, 16)) ('NF1', 'Gene', '4763', (388, 391)) ('NF1', 'Gene', (351, 354)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (38, 54)) 17114 21082267 More recently, mutations in genes associated with the mitochondrial succinate dehydrogenase (SDH) complex (SDHA, SDHB, SDHC, SDHD and SDHAF2) have been shown to cause head and neck paragangliomas, extra-adrenal paragangliomas, and pheochromocytomas (Table 1). ('SDHA', 'Gene', '6389', (107, 111)) ('succinate dehydrogenase', 'Gene', (68, 91)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (167, 194)) ('neck paragangliomas', 'Disease', (176, 195)) ('SDH', 'Gene', '6390', (119, 122)) ('SDH', 'Gene', (107, 110)) ('SDH', 'Gene', (113, 116)) ('paraganglioma', 'Phenotype', 'HP:0002668', (181, 194)) ('paragangliomas', 'Phenotype', 'HP:0002668', (181, 195)) ('SDHC', 'Gene', '6391', (119, 123)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (231, 248)) ('mutations', 'Var', (15, 24)) ('paraganglioma', 'Phenotype', 'HP:0002668', (211, 224)) ('SDHAF2', 'Gene', '54949', (134, 140)) ('SDHAF2', 'Gene', (134, 140)) ('SDHD', 'Gene', '6392', (125, 129)) ('SDH', 'Gene', '6390', (134, 137)) ('SDH', 'Gene', (119, 122)) ('SDHA', 'Gene', (134, 138)) ('SDHB', 'Gene', '6390', (113, 117)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (176, 195)) ('SDH', 'Gene', '6390', (93, 96)) ('SDH', 'Gene', '6390', (125, 128)) ('SDHA', 'Gene', '6389', (134, 138)) ('paragangliomas', 'Phenotype', 'HP:0002668', (211, 225)) ('SDHD', 'Gene', (125, 129)) ('SDHC', 'Gene', (119, 123)) ('cause', 'Reg', (161, 166)) ('SDH', 'Gene', '6390', (107, 110)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (197, 225)) ('SDH', 'Gene', (134, 137)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (167, 195)) ('SDHB', 'Gene', (113, 117)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (231, 247)) ('SDHA', 'Gene', (107, 111)) ('succinate dehydrogenase', 'Gene', '6389', (68, 91)) ('pheochromocytomas', 'Disease', (231, 248)) ('SDH', 'Gene', '6390', (113, 116)) ('extra-adrenal paragangliomas', 'Disease', (197, 225)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (231, 248)) ('SDH', 'Gene', (93, 96)) ('SDH', 'Gene', (125, 128)) 17120 21082267 Despite the fact that SDH proteins are all components of the same protein complex, mutations lead to clear differences in clinical phenotype. ('mutations', 'Var', (83, 92)) ('differences', 'Reg', (107, 118)) ('SDH', 'Gene', (22, 25)) ('SDH', 'Gene', '6390', (22, 25)) 17122 21082267 Such populations facilitate the proliferation of founder mutations, one of them being the well-known Dutch SDHD founder mutation, p. Asp92Tyr. ('Asp92Tyr', 'Var', (133, 141)) ('Asp92Tyr', 'SUBSTITUTION', 'None', (133, 141)) ('SDHD', 'Gene', '6392', (107, 111)) ('SDHD', 'Gene', (107, 111)) 17123 21082267 The increased prevalence of this and other SDHD founder mutations, relative to SDHB mutations, facilitated the initial mapping of the SDHD locus. ('mutations', 'Var', (56, 65)) ('SDHD', 'Gene', '6392', (43, 47)) ('SDHD', 'Gene', (43, 47)) ('SDHD', 'Gene', (134, 138)) ('SDHD', 'Gene', '6392', (134, 138)) ('SDHB', 'Gene', '6390', (79, 83)) ('SDHB', 'Gene', (79, 83)) 17126 21082267 Mutations in SDHD most frequently result in benign head and neck paragangliomas and are much less commonly associated with sympathetic paragangliomas and adrenal pheochromocytomas. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (162, 178)) ('paragangliomas and adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (135, 179)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (162, 179)) ('neck paragangliomas', 'Disease', (60, 79)) ('associated', 'Reg', (107, 117)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (154, 179)) ('paragangliomas', 'Phenotype', 'HP:0002668', (65, 79)) ('paraganglioma', 'Phenotype', 'HP:0002668', (65, 78)) ('SDHD', 'Gene', (13, 17)) ('SDHD', 'Gene', '6392', (13, 17)) ('Mutations', 'Var', (0, 9)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (60, 79)) ('paraganglioma', 'Phenotype', 'HP:0002668', (135, 148)) ('paragangliomas', 'Phenotype', 'HP:0002668', (135, 149)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (51, 79)) ('result in', 'Reg', (34, 43)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (154, 178)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (51, 78)) 17127 21082267 The proportion of SDHD mutation carriers that will develop a tumor (penetrance) is high (87-100%), although not all carriers with a tumor will develop additional tumor-related symptoms. ('tumor', 'Disease', 'MESH:D009369', (162, 167)) ('tumor', 'Phenotype', 'HP:0002664', (162, 167)) ('develop', 'PosReg', (51, 58)) ('tumor', 'Disease', 'MESH:D009369', (132, 137)) ('mutation', 'Var', (23, 31)) ('tumor', 'Disease', (162, 167)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('tumor', 'Disease', 'MESH:D009369', (61, 66)) ('SDHD', 'Gene', '6392', (18, 22)) ('tumor', 'Disease', (132, 137)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('SDHD', 'Gene', (18, 22)) ('tumor', 'Disease', (61, 66)) 17128 21082267 The identification of mutations in SDHD as a cause of hereditary paraganglioma syndrome quickly led to the discovery of the role of other SDH subunits. ('SDH', 'Gene', '6390', (35, 38)) ('SDHD', 'Gene', (35, 39)) ('SDHD', 'Gene', '6392', (35, 39)) ('SDH', 'Gene', '6390', (138, 141)) ('hereditary paraganglioma syndrome', 'Disease', 'MESH:D010235', (54, 87)) ('hereditary paraganglioma syndrome', 'Disease', (54, 87)) ('paraganglioma', 'Phenotype', 'HP:0002668', (65, 78)) ('SDH', 'Gene', (138, 141)) ('SDH', 'Gene', (35, 38)) ('mutations', 'Var', (22, 31)) ('cause', 'Reg', (45, 50)) 17130 21082267 Since its discovery, SDHB has been found to be the dominant gene in hereditary paraganglioma syndrome in many parts of the world, despite a relatively low penetrance of SDHB mutations of 25-40%. ('SDHB', 'Gene', '6390', (169, 173)) ('SDHB', 'Gene', (169, 173)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('SDHB', 'Gene', '6390', (21, 25)) ('hereditary paraganglioma syndrome', 'Disease', (68, 101)) ('hereditary paraganglioma syndrome', 'Disease', 'MESH:D010235', (68, 101)) ('mutations', 'Var', (174, 183)) ('SDHB', 'Gene', (21, 25)) 17131 21082267 Due to their lower penetrance, SDHB mutations are often found in apparently sporadic patients. ('lower penetrance', 'MPA', (13, 29)) ('SDHB', 'Gene', (31, 35)) ('mutations', 'Var', (36, 45)) ('patients', 'Species', '9606', (85, 93)) ('SDHB', 'Gene', '6390', (31, 35)) 17132 21082267 SDHB mutations primarily predispose to sPGLs, and around 20% of SDHB mutation carriers will develop metastatic disease. ('metastatic', 'CPA', (100, 110)) ('SDHB', 'Gene', '6390', (64, 68)) ('mutations', 'Var', (5, 14)) ('mutation', 'Var', (69, 77)) ('SDHB', 'Gene', (64, 68)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) ('sPGLs', 'Disease', (39, 44)) ('develop', 'PosReg', (92, 99)) ('predispose', 'Reg', (25, 35)) 17134 21082267 Paragangliomas due to mutations in SDHC are much rarer than SDHB- and SDHD-related paragangliomas, accounting for less than 1% of all patients in a recent study. ('SDHD', 'Gene', (70, 74)) ('SDHD', 'Gene', '6392', (70, 74)) ('Paragangliomas', 'Disease', 'MESH:D010235', (0, 14)) ('SDHB-', 'Gene', '6390', (60, 65)) ('SDHB-', 'Gene', (60, 65)) ('paragangliomas', 'Disease', (83, 97)) ('paragangliomas', 'Disease', 'MESH:D010235', (83, 97)) ('paragangliomas', 'Phenotype', 'HP:0002668', (83, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('patients', 'Species', '9606', (134, 142)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (0, 14)) ('SDHC', 'Gene', (35, 39)) ('mutations', 'Var', (22, 31)) ('SDHC', 'Gene', '6391', (35, 39)) ('Paragangliomas', 'Disease', (0, 14)) 17135 21082267 SDHC mutations result primarily in head and neck paragangliomas, but have also been identified in patients with sympathetic paragangliomas. ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (35, 62)) ('result', 'Reg', (15, 21)) ('neck paragangliomas', 'Disease', (44, 63)) ('SDHC', 'Gene', (0, 4)) ('paragangliomas', 'Disease', (124, 138)) ('paragangliomas', 'Disease', (49, 63)) ('mutations', 'Var', (5, 14)) ('paragangliomas', 'Disease', 'MESH:D010235', (49, 63)) ('paragangliomas', 'Disease', 'MESH:D010235', (124, 138)) ('SDHC', 'Gene', '6391', (0, 4)) ('patients', 'Species', '9606', (98, 106)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (44, 63)) ('paragangliomas', 'Phenotype', 'HP:0002668', (49, 63)) ('paragangliomas', 'Phenotype', 'HP:0002668', (124, 138)) ('paraganglioma', 'Phenotype', 'HP:0002668', (124, 137)) ('paraganglioma', 'Phenotype', 'HP:0002668', (49, 62)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (35, 63)) 17138 21082267 While the approximate location of this paraganglioma-associated gene had been known for over a decade, referred to as PGL2 locus, a yeast screen of respiration deficient mutants facilitated the fortuitous discovery of a conserved mitochondrial protein of unknown function that physically associated with the SDHA flavoprotein. ('respiration deficient', 'Phenotype', 'HP:0002093', (148, 169)) ('paraganglioma', 'Disease', (39, 52)) ('SDHA', 'Gene', '6389', (308, 312)) ('mutants', 'Var', (170, 177)) ('paraganglioma', 'Disease', 'MESH:D010235', (39, 52)) ('SDHA', 'Gene', (308, 312)) ('yeast', 'Species', '4932', (132, 137)) ('paraganglioma', 'Phenotype', 'HP:0002668', (39, 52)) 17140 21082267 A missense mutation of SDHAF2 c.232G>A (p.Gly78Arg) identified in a large Dutch head and neck paraganglioma kindred results in the loss of SDHA flavination and activity of the SDH complex. ('neck paraganglioma', 'Disease', (89, 107)) ('p.Gly78Arg', 'Mutation', 'rs113560320', (40, 50)) ('SDH', 'Gene', '6390', (176, 179)) ('activity', 'MPA', (160, 168)) ('c.232G>A', 'Var', (30, 38)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (80, 107)) ('SDH', 'Gene', (139, 142)) ('SDH', 'Gene', '6390', (23, 26)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (89, 107)) ('SDH', 'Gene', (176, 179)) ('paraganglioma', 'Phenotype', 'HP:0002668', (94, 107)) ('missense', 'Var', (2, 10)) ('loss of SDHA flavination', 'Disease', 'MESH:C562935', (131, 155)) ('SDHAF2', 'Gene', '54949', (23, 29)) ('SDHAF2', 'Gene', (23, 29)) ('SDH', 'Gene', (23, 26)) ('c.232G>A', 'Mutation', 'rs113560320', (30, 38)) ('SDH', 'Gene', '6390', (139, 142)) ('loss of SDHA flavination', 'Disease', (131, 155)) 17141 21082267 In a follow-up study with the joint aims of identifying new mutation carriers and assessing the frequency of SDHAF2 mutations amongst 443 paraganglioma and pheochromocytoma patients, it became clear that mutations in this gene make a very modest contribution to the overall genetic burden in these syndromes. ('paraganglioma', 'Disease', 'MESH:D010235', (138, 151)) ('pheochromocytoma', 'Disease', (156, 172)) ('patients', 'Species', '9606', (173, 181)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (156, 172)) ('mutations', 'Var', (204, 213)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (156, 172)) ('paraganglioma', 'Phenotype', 'HP:0002668', (138, 151)) ('mutations', 'Var', (116, 125)) ('paraganglioma', 'Disease', (138, 151)) ('SDHAF2', 'Gene', '54949', (109, 115)) ('SDHAF2', 'Gene', (109, 115)) 17143 21082267 Only one additional SDHAF2-related family was identified, which interestingly carried the exact mutation, p.Gly78Arg, previously found in the Netherlands, but without evidence of a familial relationship to the Dutch kindred. ('SDHAF2', 'Gene', '54949', (20, 26)) ('SDHAF2', 'Gene', (20, 26)) ('p.Gly78Arg', 'Var', (106, 116)) ('p.Gly78Arg', 'Mutation', 'rs113560320', (106, 116)) 17144 21082267 Although apparently a simple loss of function mutation in yeast, the recurrence of this mutation and absence of other mutations may suggest that the SDHAF2 protein with the specific p.Gly78Arg mutation retains residual activity, allowing the protein to participate in other, currently unknown, cellular activities, most feasibly the addition of FAD prosthetic groups to other flavoproteins. ('activity', 'MPA', (219, 227)) ('FAD', 'Chemical', 'MESH:D005182', (345, 348)) ('SDHAF2', 'Gene', (149, 155)) ('allowing', 'Reg', (229, 237)) ('participate', 'Reg', (253, 264)) ('p.Gly78Arg', 'Var', (182, 192)) ('SDHAF2', 'Gene', '54949', (149, 155)) ('yeast', 'Species', '4932', (58, 63)) ('protein', 'Protein', (156, 163)) ('p.Gly78Arg', 'Mutation', 'rs113560320', (182, 192)) 17145 21082267 A striking aspect of SDHAF2 mutations, and the probable explanation for the rapid identification of all mutation carriers, is the very high penetrance. ('SDHAF2', 'Gene', '54949', (21, 27)) ('mutations', 'Var', (28, 37)) ('SDHAF2', 'Gene', (21, 27)) 17147 21082267 Seven mutation carriers are known to have inherited the mutation via the maternal line, and are not thought to be at risk of tumor development (see "Inheritance" below). ('tumor', 'Disease', (125, 130)) ('mutation', 'Var', (56, 64)) ('tumor', 'Disease', 'MESH:D009369', (125, 130)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) 17148 21082267 The studies above suggest that SDHAF2 mutation screening should only be considered in patients who suffer exclusively from head and neck paragangliomas, who have familial antecedents, multiple tumors, or a very young age of onset, and in whom the SDHB, SDHC and SDHD genes have been shown to be negative for mutations and deletions by sequencing and multiplex ligation-dependent probe amplification (MLPA). ('deletions', 'Var', (322, 331)) ('paragangliomas', 'Phenotype', 'HP:0002668', (137, 151)) ('SDHD', 'Gene', '6392', (262, 266)) ('patients', 'Species', '9606', (86, 94)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (123, 151)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (132, 151)) ('multiple tumors', 'Disease', (184, 199)) ('SDHD', 'Gene', (262, 266)) ('SDHC', 'Gene', '6391', (253, 257)) ('SDHAF2', 'Gene', '54949', (31, 37)) ('SDHAF2', 'Gene', (31, 37)) ('SDHB', 'Gene', '6390', (247, 251)) ('tumors', 'Phenotype', 'HP:0002664', (193, 199)) ('paraganglioma', 'Phenotype', 'HP:0002668', (137, 150)) ('negative', 'NegReg', (295, 303)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (123, 150)) ('tumor', 'Phenotype', 'HP:0002664', (193, 198)) ('multiple tumors', 'Disease', 'MESH:D009369', (184, 199)) ('SDHB', 'Gene', (247, 251)) ('mutation', 'Var', (38, 46)) ('SDHC', 'Gene', (253, 257)) ('neck paragangliomas', 'Disease', (132, 151)) 17152 21082267 Recently the first SDHA mutation was reported, (c.1765C>T, p.Arg589Trp:exon 13) in a patient with a catecholamine secreting extra-adrenal paraganglioma. ('c.1765C>T', 'Var', (48, 57)) ('patient', 'Species', '9606', (85, 92)) ('extra-adrenal paraganglioma', 'Disease', (124, 151)) ('SDHA', 'Gene', '6389', (19, 23)) ('catecholamine', 'Chemical', 'MESH:D002395', (100, 113)) ('paraganglioma', 'Phenotype', 'HP:0002668', (138, 151)) ('p.Arg589Trp', 'Mutation', 'rs387906780', (59, 70)) ('extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (124, 151)) ('SDHA', 'Gene', (19, 23)) ('c.1765C>T', 'Mutation', 'rs387906780', (48, 57)) 17154 21082267 It remains unclear why SDHA mutations in paragangliomas are so rare, but the patient above may suggest that SDHA mutations show reduced penetrance and most mutation carriers escape the development of clinical symptoms. ('SDHA', 'Gene', '6389', (108, 112)) ('penetrance', 'MPA', (136, 146)) ('paragangliomas', 'Disease', (41, 55)) ('paragangliomas', 'Disease', 'MESH:D010235', (41, 55)) ('reduced', 'NegReg', (128, 135)) ('paraganglioma', 'Phenotype', 'HP:0002668', (41, 54)) ('SDHA', 'Gene', (108, 112)) ('SDHA', 'Gene', '6389', (23, 27)) ('paragangliomas', 'Phenotype', 'HP:0002668', (41, 55)) ('mutations', 'Var', (113, 122)) ('patient', 'Species', '9606', (77, 84)) ('escape', 'NegReg', (174, 180)) ('SDHA', 'Gene', (23, 27)) ('development of clinical symptoms', 'CPA', (185, 217)) 17155 21082267 Equally, and as suggested above for SDHAF2, the scarcity of SDHA mutations could be attributable to a secondary cellular function of SDHA, leading to intolerance for missense and truncating mutations that eliminate all enzyme activity. ('SDHA', 'Gene', '6389', (36, 40)) ('SDHA', 'Gene', '6389', (60, 64)) ('SDHA', 'Gene', '6389', (133, 137)) ('enzyme activity', 'MPA', (219, 234)) ('eliminate', 'NegReg', (205, 214)) ('truncating mutations', 'Var', (179, 199)) ('missense', 'Var', (166, 174)) ('SDHAF2', 'Gene', (36, 42)) ('SDHA', 'Gene', (36, 40)) ('SDHA', 'Gene', (60, 64)) ('SDHAF2', 'Gene', '54949', (36, 42)) ('mutations', 'Var', (65, 74)) ('SDHA', 'Gene', (133, 137)) 17161 21082267 Mutations seen in these patients are generally missense and the only known truncating mutation in a patient was found together with a missense mutation on the opposing allele, suggesting that complete loss of SDHA function may not be compatible with life. ('SDHA', 'Gene', (209, 213)) ('missense', 'Var', (47, 55)) ('patient', 'Species', '9606', (24, 31)) ('patient', 'Species', '9606', (100, 107)) ('Mutations', 'Var', (0, 9)) ('SDHA', 'Gene', '6389', (209, 213)) ('patients', 'Species', '9606', (24, 32)) ('function', 'MPA', (214, 222)) 17163 21082267 will prove to be first of many paraganglioma cases related to SDHA mutations is presently unclear. ('paraganglioma', 'Disease', 'MESH:D010235', (31, 44)) ('SDHA', 'Gene', (62, 66)) ('mutations', 'Var', (67, 76)) ('paraganglioma', 'Phenotype', 'HP:0002668', (31, 44)) ('paraganglioma', 'Disease', (31, 44)) ('SDHA', 'Gene', '6389', (62, 66)) 17167 21082267 Identified in consanguineous families of Turkish and Italian origin, homozygous mutations of the SDHAF1 gene result in infantile leukoencephalopathy in affected children, and symptoms include rapidly progressive psychomotor regression beginning in the first year of life, reminiscent of the clinical symptoms seen in homozygous SDHA mutations carriers. ('SDHA', 'Gene', '6389', (97, 101)) ('SDHAF1', 'Gene', '644096', (97, 103)) ('psychomotor', 'Disease', (212, 223)) ('SDHAF1', 'Gene', (97, 103)) ('mutations', 'Var', (80, 89)) ('infantile leukoencephalopathy', 'Disease', 'MESH:D056784', (119, 148)) ('psychomotor', 'Disease', 'MESH:D011596', (212, 223)) ('infantile leukoencephalopathy', 'Phenotype', 'HP:0007105', (119, 148)) ('psychomotor regression', 'Phenotype', 'HP:0002376', (212, 234)) ('result in', 'Reg', (109, 118)) ('SDHA', 'Gene', (97, 101)) ('SDHA', 'Gene', '6389', (328, 332)) ('children', 'Species', '9606', (161, 169)) ('leukoencephalopathy', 'Phenotype', 'HP:0002352', (129, 148)) ('infantile leukoencephalopathy', 'Disease', (119, 148)) ('SDHA', 'Gene', (328, 332)) 17169 21082267 Disruption of the homologous gene or expression of the mutated gene in yeast caused SDH deficiency and failure of oxidative phosphorylation-dependent growth. ('SDH deficiency and failure', 'Disease', 'MESH:D006333', (84, 110)) ('caused', 'Reg', (77, 83)) ('yeast', 'Species', '4932', (71, 76)) ('Disruption', 'Var', (0, 10)) 17172 21082267 The explanation for the lack of tumor development in these mutation carriers and heterozygous SDHA mutation carriers may lie in the biochemical activity of SDH-complex II. ('SDH', 'Gene', '6390', (94, 97)) ('SDHA', 'Gene', '6389', (94, 98)) ('SDH', 'Gene', '6390', (156, 159)) ('tumor', 'Disease', 'MESH:D009369', (32, 37)) ('mutation', 'Var', (99, 107)) ('SDHA', 'Gene', (94, 98)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('SDH', 'Gene', (94, 97)) ('tumor', 'Disease', (32, 37)) ('SDH', 'Gene', (156, 159)) 17173 21082267 SDHA homozygous mutation carriers generally show retention of complex II activity of at least 20% (range 20-61%), and likewise, homozygous SDHAF1 mutation carriers show 20-30% residual activity. ('SDHAF1', 'Gene', (139, 145)) ('mutation', 'Var', (16, 24)) ('SDHA', 'Gene', (0, 4)) ('activity', 'MPA', (73, 81)) ('SDHA', 'Gene', '6389', (139, 143)) ('complex II', 'Enzyme', (62, 72)) ('SDHA', 'Gene', (139, 143)) ('SDHA', 'Gene', '6389', (0, 4)) ('SDHAF1', 'Gene', '644096', (139, 145)) 17175 21082267 As SDHAF1 and most SDHA mutations do not eliminate all enzyme function, even allowing for LOH in a specific cell, a residual activity of 10-30% is apparently sufficient to prevent the development of paragangliomas. ('paragangliomas', 'Disease', 'MESH:D010235', (199, 213)) ('SDHA', 'Gene', (3, 7)) ('SDHA', 'Gene', '6389', (19, 23)) ('paragangliomas', 'Phenotype', 'HP:0002668', (199, 213)) ('paraganglioma', 'Phenotype', 'HP:0002668', (199, 212)) ('SDHAF1', 'Gene', '644096', (3, 9)) ('mutations', 'Var', (24, 33)) ('SDHAF1', 'Gene', (3, 9)) ('SDHA', 'Gene', (19, 23)) ('SDHA', 'Gene', '6389', (3, 7)) ('paragangliomas', 'Disease', (199, 213)) 17176 21082267 A further interesting aspect of the biochemical profile of SDHAF1 and SDHA mutation carriers is the accumulation of succinate. ('accumulation of succinate', 'MPA', (100, 125)) ('SDHA', 'Gene', '6389', (70, 74)) ('SDHA', 'Gene', (59, 63)) ('mutation', 'Var', (75, 83)) ('SDHA', 'Gene', (70, 74)) ('succinate', 'Chemical', 'MESH:D019802', (116, 125)) ('SDHAF1', 'Gene', '644096', (59, 65)) ('SDHA', 'Gene', '6389', (59, 63)) ('SDHAF1', 'Gene', (59, 65)) 17178 21082267 The nuclear translocation of HIF-1 may be an important mechanism in triggering tumorigenesis in paraganglioma progenitor cells, but its occurrence in SDHAF1 and SDHA mutation carriers may suggest that complete loss of SDH activity is required to achieve levels of succinate accumulation sufficient to drive HIF-1 translocation to the extent needed to initiate tumorigenesis. ('SDHA', 'Gene', (161, 165)) ('SDHAF1', 'Gene', '644096', (150, 156)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('translocation', 'MPA', (313, 326)) ('SDHA', 'Gene', '6389', (161, 165)) ('SDH', 'Gene', '6390', (150, 153)) ('loss', 'NegReg', (210, 214)) ('SDH', 'Gene', (218, 221)) ('tumor', 'Disease', (360, 365)) ('SDH', 'Gene', (161, 164)) ('SDHAF1', 'Gene', (150, 156)) ('activity', 'MPA', (222, 230)) ('tumor', 'Disease', 'MESH:D009369', (360, 365)) ('SDH', 'Gene', (150, 153)) ('tumor', 'Disease', (79, 84)) ('SDHA', 'Gene', (150, 154)) ('HIF-1', 'Gene', '3091', (29, 34)) ('HIF-1', 'Gene', (29, 34)) ('SDHA', 'Gene', '6389', (150, 154)) ('paraganglioma', 'Disease', (96, 109)) ('tumor', 'Disease', 'MESH:D009369', (79, 84)) ('mutation', 'Var', (166, 174)) ('tumor', 'Phenotype', 'HP:0002664', (360, 365)) ('paraganglioma', 'Disease', 'MESH:D010235', (96, 109)) ('HIF-1', 'Gene', '3091', (307, 312)) ('HIF-1', 'Gene', (307, 312)) ('SDH', 'Gene', '6390', (218, 221)) ('SDH', 'Gene', '6390', (161, 164)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) ('succinate', 'Chemical', 'MESH:D019802', (264, 273)) 17187 21082267 Tumors linked to NF1 or RET mutations show an upregulation of biological pathways including genes that mediate translation initiation, protein synthesis, and kinase signaling, and are both associated with the RAS/RAF/MAP kinase signaling pathway. ('RET', 'Gene', '5979', (24, 27)) ('upregulation', 'PosReg', (46, 58)) ('associated', 'Reg', (189, 199)) ('biological pathways', 'Pathway', (62, 81)) ('kinase', 'MPA', (158, 164)) ('NF1', 'Gene', (17, 20)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('RET', 'Gene', (24, 27)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('NF1', 'Gene', '4763', (17, 20)) ('RAF', 'Gene', '22882', (213, 216)) ('RAF', 'Gene', (213, 216)) ('mutations', 'Var', (28, 37)) 17190 21082267 The authors focused on the mammalian target of rapamycin (mTOR), which is deregulated on loss of NF1, and could show that the C1 mTOR complex is specifically affected by TMEM127 knockdown, leading to increased phosphorylation of targets of mTORC1. ('NF1', 'Gene', (97, 100)) ('loss', 'Var', (89, 93)) ('TMEM127', 'Gene', '55654', (170, 177)) ('mTOR', 'Gene', (129, 133)) ('mTOR', 'Gene', (240, 244)) ('mTOR', 'Gene', (58, 62)) ('mammalian target of rapamycin', 'Gene', '2475', (27, 56)) ('mTOR', 'Gene', '2475', (129, 133)) ('affected', 'Reg', (158, 166)) ('knockdown', 'Var', (178, 187)) ('mTORC1', 'Gene', (240, 246)) ('mTOR', 'Gene', '2475', (58, 62)) ('mTOR', 'Gene', '2475', (240, 244)) ('mTORC1', 'Gene', '382056', (240, 246)) ('increased', 'PosReg', (200, 209)) ('mammalian target of rapamycin', 'Gene', (27, 56)) ('NF1', 'Gene', '4763', (97, 100)) ('TMEM127', 'Gene', (170, 177)) ('phosphorylation', 'MPA', (210, 225)) 17191 21082267 Knockdown of TMEM127 also resulted in larger cells with higher rates of proliferation. ('Knockdown', 'Var', (0, 9)) ('proliferation', 'CPA', (72, 85)) ('higher rates', 'PosReg', (56, 68)) ('TMEM127', 'Gene', (13, 20)) ('TMEM127', 'Gene', '55654', (13, 20)) 17192 21082267 Pheochromocytomas carrying a TMEM127 mutation showed hyperphosphorylation of mTOR effector proteins, all these data together indicating that TMEM127 is a negative regulator of mTOR. ('TMEM127', 'Gene', (141, 148)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (0, 17)) ('TMEM127', 'Gene', '55654', (141, 148)) ('mutation', 'Var', (37, 45)) ('mTOR', 'Gene', '2475', (176, 180)) ('mTOR', 'Gene', (176, 180)) ('TMEM127', 'Gene', (29, 36)) ('mTOR', 'Gene', '2475', (77, 81)) ('Pheochromocytomas', 'Disease', (0, 17)) ('TMEM127', 'Gene', '55654', (29, 36)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('mTOR', 'Gene', (77, 81)) 17194 21082267 Of the seven distinct germline mutations identified, six were truncating, and the deletion of the wild-type allele in tumor DNA indicates that this is a bone fide tumor suppressor gene. ('mutations', 'Var', (31, 40)) ('tumor', 'Disease', 'MESH:D009369', (118, 123)) ('tumor', 'Disease', 'MESH:D009369', (163, 168)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('deletion', 'Var', (82, 90)) ('tumor', 'Disease', (118, 123)) ('tumor', 'Disease', (163, 168)) ('truncating', 'MPA', (62, 72)) 17199 21082267 The recognition of this phenomenon was made possible by the same social and demographic factors in the Netherlands that facilitated the initial mapping of the SDHD locus, and specifically by the increased prevalence of SDHD mutations, relative to SDHB mutations. ('SDHD', 'Gene', (159, 163)) ('SDHB', 'Gene', '6390', (247, 251)) ('SDHB', 'Gene', (247, 251)) ('SDHD', 'Gene', '6392', (219, 223)) ('mutations', 'Var', (224, 233)) ('SDHD', 'Gene', (219, 223)) ('SDHD', 'Gene', '6392', (159, 163)) 17200 21082267 Although mutations in SDHD and SDHAF2 can be inherited via the maternal and paternal lines, tumor formation following maternal transmission of a mutation is extremely rare. ('SDHAF2', 'Gene', '54949', (31, 37)) ('SDHAF2', 'Gene', (31, 37)) ('mutations', 'Var', (9, 18)) ('tumor', 'Disease', 'MESH:D009369', (92, 97)) ('SDHD', 'Gene', '6392', (22, 26)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('SDHD', 'Gene', (22, 26)) ('tumor', 'Disease', (92, 97)) 17213 21082267 A number of studies have linked the central mediator of cellular hypoxia, HIF-1, to defects in succinate dehydrogenase. ('succinate dehydrogenase', 'Gene', (95, 118)) ('HIF-1', 'Gene', '3091', (74, 79)) ('succinate dehydrogenase', 'Gene', '6389', (95, 118)) ('defects', 'Var', (84, 91)) ('HIF-1', 'Gene', (74, 79)) ('hypoxia', 'Disease', (65, 72)) ('hypoxia', 'Disease', 'MESH:D000860', (65, 72)) 17218 21082267 identified a family with two SDHB-linked cases of high altitude paraganglioma, residing at elevations of up to 2,200 m. These are the first cases to link high altitude paraganglioma to mutations of the succinate dehydrogenase genes. ('paraganglioma', 'Disease', 'MESH:D010235', (168, 181)) ('paraganglioma', 'Disease', (64, 77)) ('succinate dehydrogenase', 'Gene', (202, 225)) ('paraganglioma', 'Phenotype', 'HP:0002668', (168, 181)) ('paraganglioma', 'Disease', 'MESH:D010235', (64, 77)) ('paraganglioma', 'Disease', (168, 181)) ('succinate dehydrogenase', 'Gene', '6389', (202, 225)) ('mutations', 'Var', (185, 194)) ('SDHB-', 'Gene', '6390', (29, 34)) ('paraganglioma', 'Phenotype', 'HP:0002668', (64, 77)) ('SDHB-', 'Gene', (29, 34)) 17222 21082267 In addition, both patients developed head and neck tumors, while abdominal tumors occur much more frequently in SDHB mutation carriers. ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('head and neck tumors', 'Phenotype', 'HP:0012288', (37, 57)) ('neck tumors', 'Disease', 'MESH:D006258', (46, 57)) ('developed', 'Reg', (27, 36)) ('neck tumors', 'Disease', (46, 57)) ('abdominal tumors', 'Disease', 'MESH:D015746', (65, 81)) ('SDHB', 'Gene', (112, 116)) ('SDHB', 'Gene', '6390', (112, 116)) ('tumors', 'Phenotype', 'HP:0002664', (51, 57)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('patients', 'Species', '9606', (18, 26)) ('mutation', 'Var', (117, 125)) ('carriers', 'Reg', (126, 134)) ('tumors', 'Phenotype', 'HP:0002664', (75, 81)) ('abdominal tumors', 'Disease', (65, 81)) 17223 21082267 The identification of SDHB mutations in high altitude paraganglioma may serve to renew interest in this fascinating but underappreciated field of paraganglioma research, and refocus attention on the role of oxygen levels in the initiation and development of these tumors. ('mutations', 'Var', (27, 36)) ('oxygen', 'Chemical', 'MESH:D010100', (207, 213)) ('paraganglioma', 'Disease', (54, 67)) ('tumor', 'Phenotype', 'HP:0002664', (264, 269)) ('paraganglioma', 'Disease', 'MESH:D010235', (146, 159)) ('SDHB', 'Gene', '6390', (22, 26)) ('paraganglioma', 'Disease', 'MESH:D010235', (54, 67)) ('SDHB', 'Gene', (22, 26)) ('tumors', 'Disease', (264, 270)) ('tumors', 'Disease', 'MESH:D009369', (264, 270)) ('tumors', 'Phenotype', 'HP:0002664', (264, 270)) ('paraganglioma', 'Phenotype', 'HP:0002668', (146, 159)) ('paraganglioma', 'Phenotype', 'HP:0002668', (54, 67)) ('paraganglioma', 'Disease', (146, 159)) 17227 21082267 Both MLPA and similar multiplex PCR methods have been applied in SDH deletion analysis, and have led to the recognition that deletions can represent up to 10% of all mutations. ('SDH', 'Gene', '6390', (65, 68)) ('SDH', 'Gene', (65, 68)) ('deletions', 'Var', (125, 134)) 17230 21082267 who showed that in a series of 220 paragangliomas and pheochromocytomas, 102 tumors with known mutation of one of the SDH genes were negative for SDHB staining while RET, VHL and NF1 cases were uniformly positive. ('negative', 'NegReg', (133, 141)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (54, 70)) ('pheochromocytomas', 'Disease', (54, 71)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (54, 71)) ('SDH', 'Gene', (146, 149)) ('tumors', 'Phenotype', 'HP:0002664', (77, 83)) ('RET', 'Gene', '5979', (166, 169)) ('paragangliomas', 'Disease', (35, 49)) ('VHL', 'Gene', (171, 174)) ('SDH', 'Gene', '6390', (118, 121)) ('tumor', 'Phenotype', 'HP:0002664', (77, 82)) ('SDHB', 'Gene', '6390', (146, 150)) ('NF1', 'Gene', '4763', (179, 182)) ('mutation', 'Var', (95, 103)) ('tumors', 'Disease', (77, 83)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (54, 71)) ('VHL', 'Gene', '7428', (171, 174)) ('NF1', 'Gene', (179, 182)) ('RET', 'Gene', (166, 169)) ('SDH', 'Gene', (118, 121)) ('tumors', 'Disease', 'MESH:D009369', (77, 83)) ('SDHB', 'Gene', (146, 150)) ('paragangliomas', 'Disease', 'MESH:D010235', (35, 49)) ('SDH', 'Gene', '6390', (146, 149)) ('paragangliomas', 'Phenotype', 'HP:0002668', (35, 49)) ('paraganglioma', 'Phenotype', 'HP:0002668', (35, 48)) 17241 21082267 The identification of mutations in SDHAF2 has revealed that proteins ancillary to succinate dehydrogenase can also be tumorigenic, and the belated identification of a mutation in SDHA in a paraganglioma patient has demonstrated that no SDH-related gene can be entirely excluded from consideration when thinking about the genetics of these tumor syndromes. ('tumor', 'Disease', (339, 344)) ('tumor', 'Disease', 'MESH:D009369', (118, 123)) ('SDHAF2', 'Gene', '54949', (35, 41)) ('SDH', 'Gene', (179, 182)) ('SDHAF2', 'Gene', (35, 41)) ('SDHA', 'Gene', (35, 39)) ('SDH', 'Gene', (35, 38)) ('tumor', 'Disease', 'MESH:D009369', (339, 344)) ('succinate dehydrogenase', 'Gene', '6389', (82, 105)) ('tumor syndromes', 'Disease', 'MESH:D009369', (339, 354)) ('succinate dehydrogenase', 'Gene', (82, 105)) ('SDHA', 'Gene', '6389', (35, 39)) ('paraganglioma', 'Phenotype', 'HP:0002668', (189, 202)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('SDH', 'Gene', '6390', (236, 239)) ('tumor', 'Phenotype', 'HP:0002664', (339, 344)) ('mutation', 'Var', (167, 175)) ('mutations', 'Var', (22, 31)) ('SDH', 'Gene', (236, 239)) ('SDH', 'Gene', '6390', (179, 182)) ('SDHA', 'Gene', (179, 183)) ('tumor syndromes', 'Disease', (339, 354)) ('SDH', 'Gene', '6390', (35, 38)) ('patient', 'Species', '9606', (203, 210)) ('paraganglioma', 'Disease', (189, 202)) ('tumor', 'Disease', (118, 123)) ('SDHA', 'Gene', '6389', (179, 183)) ('paraganglioma', 'Disease', 'MESH:D010235', (189, 202)) 17318 33971553 Cardiac examination revealed crackles Killip II with no signs of right heart failure. ('crackles', 'Phenotype', 'HP:0030830', (29, 37)) ('right heart failure', 'Disease', 'MESH:D006333', (65, 84)) ('revealed', 'Reg', (20, 28)) ('heart failure', 'Phenotype', 'HP:0001635', (71, 84)) ('crackles', 'Var', (29, 37)) ('right heart failure', 'Phenotype', 'HP:0001708', (65, 84)) ('right heart failure', 'Disease', (65, 84)) 17364 33846792 A dual-luciferase reporter gene assay was performed to verify the combination of miR-29a-3p and IGF-1. ('IGF-1', 'Gene', (96, 101)) ('miR-29a-3p', 'Var', (81, 91)) ('miR-29a-3p', 'Chemical', '-', (81, 91)) 17368 33846792 Overexpression miR-29a-3p inhibited IGF-1 mRNA and protein expression. ('IGF-1', 'Gene', (36, 41)) ('miR-29a-3p', 'Chemical', '-', (15, 25)) ('miR-29a-3p', 'Var', (15, 25)) ('inhibited', 'NegReg', (26, 35)) 17369 33846792 miR-29a-3p inhibited cell proliferation and PRL and GH expression, and promoted apoptosis by inhibiting IGF-1. ('miR-29a-3p', 'Chemical', '-', (0, 10)) ('PRL', 'CPA', (44, 47)) ('promoted', 'PosReg', (71, 79)) ('cell proliferation', 'CPA', (21, 39)) ('rat', 'Species', '10116', (33, 36)) ('inhibited', 'NegReg', (11, 20)) ('inhibiting', 'NegReg', (93, 103)) ('apoptosis', 'CPA', (80, 89)) ('miR-29a-3p', 'Var', (0, 10)) ('IGF-1', 'Gene', (104, 109)) 17371 33846792 To conclude, miR-29a-3p inhibited the proliferation and secretory abilities of prolactinoma cells by inhibiting nuclear translocation of beta-catenin via a molecular mechanism that is inseparable from IGF-1. ('secretory', 'MPA', (56, 65)) ('beta-catenin', 'Gene', '84353', (137, 149)) ('proliferation', 'CPA', (38, 51)) ('inhibited', 'NegReg', (24, 33)) ('prolactinoma', 'Disease', (79, 91)) ('miR-29a-3p', 'Var', (13, 23)) ('prolactinoma', 'Phenotype', 'HP:0040278', (79, 91)) ('beta-catenin', 'Gene', (137, 149)) ('prolactinoma', 'Disease', 'MESH:D015175', (79, 91)) ('miR-29a-3p', 'Chemical', '-', (13, 23)) ('rat', 'Species', '10116', (45, 48)) ('inhibiting', 'NegReg', (101, 111)) 17378 33846792 In prolactinoma, miRNAs, such as miR-93-5p, miR-145-5p and miR-1299, have regulatory functions. ('miR-1299', 'Var', (59, 67)) ('miR-93', 'Gene', '100314154', (33, 39)) ('regulatory', 'MPA', (74, 84)) ('miR-145', 'Gene', (44, 51)) ('miR-145', 'Gene', '100314036', (44, 51)) ('prolactinoma', 'Phenotype', 'HP:0040278', (3, 15)) ('prolactinoma', 'Disease', (3, 15)) ('miR-93', 'Gene', (33, 39)) ('prolactinoma', 'Disease', 'MESH:D015175', (3, 15)) 17380 33846792 Moreover, miR-29 can affect the growth of rats by inhibiting the expression of IGF-1. ('inhibiting', 'NegReg', (50, 60)) ('rats', 'Species', '10116', (42, 46)) ('miR-29', 'Chemical', '-', (10, 16)) ('miR-29', 'Var', (10, 16)) ('expression', 'MPA', (65, 75)) ('growth', 'CPA', (32, 38)) ('IGF-1', 'Gene', (79, 84)) ('affect', 'Reg', (21, 27)) 17382 33846792 Therefore, the aim of the present study was to determine the effects of miR-29a-3p on the proliferation and apoptosis of prolactinoma cells, as well as the secretion of PRL and GH via the IGF-1 and beta-catenin pathways. ('prolactinoma', 'Phenotype', 'HP:0040278', (121, 133)) ('rat', 'Species', '10116', (97, 100)) ('miR-29a-3p', 'Var', (72, 82)) ('miR-29a-3p', 'Chemical', '-', (72, 82)) ('prolactinoma', 'Disease', 'MESH:D015175', (121, 133)) ('beta-catenin', 'Gene', (198, 210)) ('IGF-1', 'Pathway', (188, 193)) ('secretion', 'MPA', (156, 165)) ('beta-catenin', 'Gene', '84353', (198, 210)) ('effects', 'Reg', (61, 68)) ('apoptosis', 'CPA', (108, 117)) ('prolactinoma', 'Disease', (121, 133)) ('PRL', 'Protein', (169, 172)) 17423 33846792 In order to preliminarily analyze the significance of miR-29a-3p in prolactinoma, analysis of TCGA database showed that low expression of miR-29a-3p was associated with poor prognosis of patients with pheochromocytomas and paragangliomas (P=0.02, Fig. ('patients', 'Species', '9606', (187, 195)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (201, 218)) ('miR-29a-3p', 'Chemical', '-', (138, 148)) ('miR-29a-3p', 'Var', (138, 148)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (201, 217)) ('prolactinoma', 'Disease', (68, 80)) ('paragangliomas', 'Phenotype', 'HP:0002668', (223, 237)) ('paraganglioma', 'Phenotype', 'HP:0002668', (223, 236)) ('prolactinoma', 'Phenotype', 'HP:0040278', (68, 80)) ('low', 'NegReg', (120, 123)) ('miR-29a-3p', 'Chemical', '-', (54, 64)) ('prolactinoma', 'Disease', 'MESH:D015175', (68, 80)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (201, 237)) ('gliomas', 'Phenotype', 'HP:0009733', (230, 237)) 17424 33846792 The prediction results showed that there were binding sites between miR-29a-3p and the 3'-UTR of IGF-1 mRNA, and both are conserved (Fig. ('miR-29a-3p', 'Chemical', '-', (68, 78)) ('miR-29a-3p', 'Var', (68, 78)) ('IGF-1', 'Gene', (97, 102)) ('binding', 'Interaction', (46, 53)) 17426 33846792 1C and D), transfection with miR-29a-3p mimic and Wt-IGF-1 decreased the relative luciferase activity in MMQ and GH3 cells, thereby confirming targeted binding (Fig. ('miR-29a-3p mimic', 'Var', (29, 45)) ('decreased', 'NegReg', (59, 68)) ('activity', 'MPA', (93, 101)) ('miR-29a-3p', 'Chemical', '-', (29, 39)) ('luciferase', 'Enzyme', (82, 92)) ('binding', 'Interaction', (152, 159)) 17429 33846792 The aforementioned data suggested that miR-29a-3p targeted IGF-1 and may play an important regulatory role in prolactinoma. ('prolactinoma', 'Disease', 'MESH:D015175', (110, 122)) ('prolactinoma', 'Phenotype', 'HP:0040278', (110, 122)) ('miR-29a-3p', 'Var', (39, 49)) ('miR-29a-3p', 'Chemical', '-', (39, 49)) ('targeted', 'Reg', (50, 58)) ('prolactinoma', 'Disease', (110, 122)) ('play', 'Reg', (73, 77)) ('IGF-1', 'Gene', (59, 64)) 17430 33846792 To further analyze the effects of miR-29a-3p/IGF-1 on prolactinoma, MMQ and GH3 cells were divided into four treatment groups: NC, mimic, mimic + IGF-1, and IGF-1. ('prolactinoma', 'Disease', (54, 66)) ('prolactinoma', 'Phenotype', 'HP:0040278', (54, 66)) ('prolactinoma', 'Disease', 'MESH:D015175', (54, 66)) ('miR-29a-3p', 'Chemical', '-', (34, 44)) ('mimic +', 'Var', (138, 145)) 17431 33846792 The results showed that overexpression of miR-29a-3p significantly inhibited the mRNA and protein levels of IGF-1 (P<0.05), while transfection of IGF-1 pcDNA3.1 blocked the inhibitory effects of miR-29a-3p on IGF-1 (Fig. ('inhibited', 'NegReg', (67, 76)) ('overexpression', 'PosReg', (24, 38)) ('miR-29a-3p', 'Chemical', '-', (42, 52)) ('IGF-1', 'MPA', (108, 113)) ('miR-29a-3p', 'Chemical', '-', (195, 205)) ('miR-29a-3p', 'Var', (42, 52)) 17432 33846792 These findings suggested that miR-29a-3p strongly inhibited IGF-1 expression at the mRNA and protein levels in MMQ and GH3 cells. ('IGF-1', 'Gene', (60, 65)) ('expression', 'MPA', (66, 76)) ('miR-29a-3p', 'Chemical', '-', (30, 40)) ('miR-29a-3p', 'Var', (30, 40)) ('inhibited', 'NegReg', (50, 59)) 17434 33846792 The results showed that overexpression of miR-29a-3p inhibited the viability and proliferation of MMQ and GH3 cells. ('inhibited', 'NegReg', (53, 62)) ('miR-29a-3p', 'Var', (42, 52)) ('rat', 'Species', '10116', (88, 91)) ('overexpression', 'PosReg', (24, 38)) ('miR-29a-3p', 'Chemical', '-', (42, 52)) ('viability', 'CPA', (67, 76)) 17436 33846792 Moreover, increased expression of miR-29a-3p significantly increased the apoptosis rates of MMQ and GH3 cells, while overexpression of IGF-1 had an opposite effect on apoptosis by neutralizing the effect of miR-29a-3p (P<0.05, Fig. ('rat', 'Species', '10116', (83, 86)) ('apoptosis rates', 'CPA', (73, 88)) ('MMQ', 'CPA', (92, 95)) ('miR-29a-3p', 'Chemical', '-', (207, 217)) ('miR-29a-3p', 'Chemical', '-', (34, 44)) ('miR-29a-3p', 'Var', (34, 44)) ('increased', 'PosReg', (59, 68)) ('increased', 'PosReg', (10, 19)) 17437 33846792 Correspondingly, the levels of apoptosis marker proteins caspase-3 and Bax increased correspondingly after miR-29a-3p was overexpressed. ('miR-29a-3p', 'Var', (107, 117)) ('caspase-3', 'Gene', '25402', (57, 66)) ('Bax', 'Gene', '24887', (71, 74)) ('Bax', 'Gene', (71, 74)) ('caspase-3', 'Gene', (57, 66)) ('increased', 'PosReg', (75, 84)) ('overexpressed', 'PosReg', (122, 135)) ('miR-29a-3p', 'Chemical', '-', (107, 117)) 17439 33846792 These results suggested that miR-29a-3p inhibited proliferation and induced apoptosis of prolactinoma cells, which was closely related to the inhibition of IGF-1. ('inhibited', 'NegReg', (40, 49)) ('induced', 'Reg', (68, 75)) ('proliferation', 'CPA', (50, 63)) ('miR-29a-3p', 'Var', (29, 39)) ('prolactinoma', 'Disease', (89, 101)) ('miR-29a-3p', 'Chemical', '-', (29, 39)) ('rat', 'Species', '10116', (57, 60)) ('prolactinoma', 'Disease', 'MESH:D015175', (89, 101)) ('apoptosis', 'CPA', (76, 85)) ('prolactinoma', 'Phenotype', 'HP:0040278', (89, 101)) 17441 33846792 Overexpression of miR-29a-3p significantly lowered GH mRNA levels in GH3 cells and GH concentration in the medium as compared with the NC group. ('GH concentration in the', 'MPA', (83, 106)) ('lowered', 'NegReg', (43, 50)) ('miR-29a-3p', 'Chemical', '-', (18, 28)) ('miR-29a-3p', 'Var', (18, 28)) ('GH mRNA levels', 'MPA', (51, 65)) ('rat', 'Species', '10116', (93, 96)) 17443 33846792 These results suggested that miR-29a-3p inhibited the expression and secretion of PRL and/or GH in MMQ and GH3 cells by inhibiting IGF-1. ('expression', 'MPA', (54, 64)) ('inhibiting', 'NegReg', (120, 130)) ('inhibited', 'NegReg', (40, 49)) ('PRL', 'Protein', (82, 85)) ('miR-29a-3p', 'Chemical', '-', (29, 39)) ('miR-29a-3p', 'Var', (29, 39)) ('secretion', 'MPA', (69, 78)) ('IGF-1', 'MPA', (131, 136)) 17444 33846792 To further analyze the mechanism used by miR-29a-3p/IGF-1 to regulate the progression and secretion of prolactinoma, beta-catenin levels were measured. ('miR-29a-3p', 'Chemical', '-', (41, 51)) ('beta-catenin', 'Gene', (117, 129)) ('prolactinoma', 'Disease', 'MESH:D015175', (103, 115)) ('beta-catenin', 'Gene', '84353', (117, 129)) ('miR-29a-3p/IGF-1', 'Var', (41, 57)) ('prolactinoma', 'Disease', (103, 115)) ('prolactinoma', 'Phenotype', 'HP:0040278', (103, 115)) 17447 33846792 In addition, overexpression of IGF-1 reversed the inhibitory effects of miR-29a-3p on beta-catenin (P<0.05, Fig. ('miR-29a-3p', 'Chemical', '-', (72, 82)) ('miR-29a-3p', 'Var', (72, 82)) ('beta-catenin', 'Gene', (86, 98)) ('beta-catenin', 'Gene', '84353', (86, 98)) ('IGF-1', 'Gene', (31, 36)) 17448 33846792 Collectively, these results suggested that the effects of miR-29a-3p/IGF-1 on the proliferation, metastasis and secretion of MMQ and GH3 cells were related to beta-catenin. ('beta-catenin', 'Gene', (159, 171)) ('secretion', 'MPA', (112, 121)) ('metastasis', 'CPA', (97, 107)) ('MMQ', 'Protein', (125, 128)) ('beta-catenin', 'Gene', '84353', (159, 171)) ('rat', 'Species', '10116', (89, 92)) ('proliferation', 'CPA', (82, 95)) ('miR-29a-3p/IGF-1', 'Var', (58, 74)) ('effects', 'Reg', (47, 54)) ('miR-29a-3p', 'Chemical', '-', (58, 68)) 17452 33846792 In a rat model of prolactinoma induced by 17-beta estradiol, inhibition of IGF-1 alleviated serum levels of PRL and reduced the blood vessel density of prolactinoma. ('prolactinoma', 'Disease', 'MESH:D015175', (18, 30)) ('prolactinoma', 'Phenotype', 'HP:0040278', (152, 164)) ('inhibition', 'Var', (61, 71)) ('serum levels of PRL', 'MPA', (92, 111)) ('IGF-1', 'Gene', (75, 80)) ('prolactinoma', 'Disease', 'MESH:D015175', (152, 164)) ('rat', 'Species', '10116', (5, 8)) ('blood vessel', 'MPA', (128, 140)) ('alleviated', 'NegReg', (81, 91)) ('prolactinoma', 'Phenotype', 'HP:0040278', (18, 30)) ('prolactinoma', 'Disease', (18, 30)) ('reduced', 'NegReg', (116, 123)) ('17-beta estradiol', 'Chemical', 'MESH:D004958', (42, 59)) ('prolactinoma', 'Disease', (152, 164)) 17455 33846792 The results of the present study suggested that inhibition of IGF-1 by exogenous methods could inhibit the growth of prolactinoma and reduce the secretion of PRL and GH. ('reduce', 'NegReg', (134, 140)) ('inhibit', 'NegReg', (95, 102)) ('prolactinoma', 'Phenotype', 'HP:0040278', (117, 129)) ('inhibition', 'Var', (48, 58)) ('growth', 'MPA', (107, 113)) ('prolactinoma', 'Disease', (117, 129)) ('prolactinoma', 'Disease', 'MESH:D015175', (117, 129)) ('IGF-1', 'Gene', (62, 67)) 17456 33846792 In polycystic ovary syndrome, IGF-1 is targeted by miR-323-3p and miR-323-3p/IGF-1 is involved in the regulation of steroid secretion and human cumulus cell function. ('miR-323-3p', 'Var', (51, 61)) ('polycystic ovary', 'Phenotype', 'HP:0000147', (3, 19)) ('steroid', 'Chemical', 'MESH:D013256', (116, 123)) ('polycystic ovary syndrome', 'Disease', (3, 28)) ('human', 'Species', '9606', (138, 143)) ('miR-323-3p/IGF-1', 'Gene', (66, 82)) ('ovary syndrome', 'Phenotype', 'HP:0000137', (14, 28)) ('polycystic ovary syndrome', 'Disease', 'MESH:D011085', (3, 28)) ('IGF-1', 'Gene', (30, 35)) ('involved', 'Reg', (86, 94)) ('targeted', 'Reg', (39, 47)) ('steroid secretion', 'MPA', (116, 133)) ('miR-323-3p/IGF-1', 'Var', (66, 82)) 17457 33846792 miR-135a inhibits the proliferation and metastasis of lung cancer cells by targeting IGF-1 to inhibit the AKT pathway. ('AKT', 'Gene', (106, 109)) ('miR-135a', 'Var', (0, 8)) ('lung cancer', 'Phenotype', 'HP:0100526', (54, 65)) ('targeting', 'Reg', (75, 84)) ('miR-135a', 'Chemical', '-', (0, 8)) ('rat', 'Species', '10116', (29, 32)) ('cancer', 'Phenotype', 'HP:0002664', (59, 65)) ('inhibits', 'NegReg', (9, 17)) ('IGF-1', 'Gene', (85, 90)) ('AKT', 'Gene', '207', (106, 109)) ('metastasis of lung cancer', 'Disease', (40, 65)) ('inhibit', 'NegReg', (94, 101)) ('metastasis of lung cancer', 'Disease', 'MESH:D008175', (40, 65)) 17459 33846792 Moreover, it was predicted and verified that miR-29a-3p was an upstream regulator of IGF-1 and, thus, presents a possible target to reduce IGF-1 mRNA and protein levels. ('IGF-1', 'Gene', (139, 144)) ('miR-29a-3p', 'Chemical', '-', (45, 55)) ('IGF-1', 'Gene', (85, 90)) ('reduce', 'NegReg', (132, 138)) ('miR-29a-3p', 'Var', (45, 55)) 17460 33846792 These results also suggested that miR-29a-3p might play a role in the development and progression of prolactinoma by regulating IGF-1. ('IGF-1', 'Gene', (128, 133)) ('prolactinoma', 'Disease', 'MESH:D015175', (101, 113)) ('prolactinoma', 'Phenotype', 'HP:0040278', (101, 113)) ('regulating', 'Reg', (117, 127)) ('play', 'Reg', (51, 55)) ('miR-29a-3p', 'Chemical', '-', (34, 44)) ('miR-29a-3p', 'Var', (34, 44)) ('prolactinoma', 'Disease', (101, 113)) 17461 33846792 In order to further analyze the effects of miR-29a-3p/IGF-1 on prolactinoma, miR-29a-3p and/or IGF-1 was overexpressed in MMQ and GH3 cells. ('prolactinoma', 'Phenotype', 'HP:0040278', (63, 75)) ('miR-29a-3p', 'Var', (77, 87)) ('IGF-1', 'Gene', (95, 100)) ('prolactinoma', 'Disease', (63, 75)) ('miR-29a-3p', 'Chemical', '-', (43, 53)) ('miR-29a-3p', 'Chemical', '-', (77, 87)) ('prolactinoma', 'Disease', 'MESH:D015175', (63, 75)) 17462 33846792 The results showed that miR-29a-3p inhibited the proliferation and induced apoptosis of prolactinoma cells, while IGF-1 blocked the inhibitory effects of miR-29a-3p. ('miR-29a-3p', 'Chemical', '-', (24, 34)) ('induced', 'Reg', (67, 74)) ('rat', 'Species', '10116', (56, 59)) ('prolactinoma', 'Disease', (88, 100)) ('proliferation', 'CPA', (49, 62)) ('apoptosis', 'CPA', (75, 84)) ('prolactinoma', 'Disease', 'MESH:D015175', (88, 100)) ('prolactinoma', 'Phenotype', 'HP:0040278', (88, 100)) ('inhibited', 'NegReg', (35, 44)) ('miR-29a-3p', 'Chemical', '-', (154, 164)) ('miR-29a-3p', 'Var', (24, 34)) 17465 33846792 Taken together, the results of the present and previous studies indicate that miR-29a-3p can inhibit the proliferation and induce apoptosis of prolactinoma cells, and these functions are related to the targeted inhibition of IGF-1 expression. ('inhibit', 'NegReg', (93, 100)) ('IGF-1', 'Gene', (225, 230)) ('induce', 'PosReg', (123, 129)) ('apoptosis', 'CPA', (130, 139)) ('prolactinoma', 'Disease', (143, 155)) ('proliferation', 'CPA', (105, 118)) ('rat', 'Species', '10116', (112, 115)) ('prolactinoma', 'Disease', 'MESH:D015175', (143, 155)) ('prolactinoma', 'Phenotype', 'HP:0040278', (143, 155)) ('miR-29a-3p', 'Chemical', '-', (78, 88)) ('miR-29a-3p', 'Var', (78, 88)) 17467 33846792 Inhibition of Wnt/beta-catenin can reduce PRL secretion by MMQ cells. ('beta-catenin', 'Gene', (18, 30)) ('beta-catenin', 'Gene', '84353', (18, 30)) ('PRL secretion', 'MPA', (42, 55)) ('Inhibition', 'Var', (0, 10)) ('reduce', 'NegReg', (35, 41)) 17469 33846792 The results of the present study showed that increasing the expression of miR-29a-3p inhibited the nuclear translocation of beta-catenin in MMQ and GH3 cells, while inhibiting the secretion of PRL and/or GH. ('expression', 'MPA', (60, 70)) ('beta-catenin', 'Gene', (124, 136)) ('inhibited', 'NegReg', (85, 94)) ('beta-catenin', 'Gene', '84353', (124, 136)) ('inhibiting', 'NegReg', (165, 175)) ('increasing', 'PosReg', (45, 55)) ('miR-29a-3p', 'Var', (74, 84)) ('miR-29a-3p', 'Chemical', '-', (74, 84)) ('secretion of PRL', 'MPA', (180, 196)) ('nuclear translocation', 'MPA', (99, 120)) 17470 33846792 Overexpression of IGF-1 restored the retention of beta-catenin in the cytoplasm caused by miR-29a-3p. ('miR-29a-3p', 'Chemical', '-', (90, 100)) ('miR-29a-3p', 'Var', (90, 100)) ('beta-catenin', 'Gene', (50, 62)) ('retention', 'MPA', (37, 46)) ('IGF-1', 'Gene', (18, 23)) ('beta-catenin', 'Gene', '84353', (50, 62)) 17475 33846792 In conclusion, the level of miR-29a-3p in prolactinoma was suppressed, thus increasing miR-29a-3p expression may inhibit the proliferation of prolactinoma cells and the secretion of PRL and GH by targeting IGF-1 via mechanisms that may be related to the beta-catenin pathway. ('prolactinoma', 'Disease', 'MESH:D015175', (142, 154)) ('targeting', 'Reg', (196, 205)) ('prolactinoma', 'Phenotype', 'HP:0040278', (42, 54)) ('beta-catenin', 'Gene', (254, 266)) ('miR-29a-3p', 'Chemical', '-', (87, 97)) ('proliferation', 'CPA', (125, 138)) ('PRL', 'Protein', (182, 185)) ('increasing', 'PosReg', (76, 86)) ('prolactinoma', 'Disease', (42, 54)) ('miR-29a-3p', 'Chemical', '-', (28, 38)) ('prolactinoma', 'Phenotype', 'HP:0040278', (142, 154)) ('miR-29a-3p', 'Var', (87, 97)) ('rat', 'Species', '10116', (132, 135)) ('beta-catenin', 'Gene', '84353', (254, 266)) ('prolactinoma', 'Disease', (142, 154)) ('prolactinoma', 'Disease', 'MESH:D015175', (42, 54)) ('inhibit', 'NegReg', (113, 120)) ('secretion', 'MPA', (169, 178)) ('IGF-1', 'Gene', (206, 211)) 17476 33846792 However, further studies are needed to elucidate the relationship between miR-29a-3p and prolactinoma, and the underlying mechanism regulating IGF-1/beta-catenin in prolactinoma cells must be verified in vivo. ('beta-catenin', 'Gene', (149, 161)) ('prolactinoma', 'Disease', (89, 101)) ('prolactinoma', 'Disease', (165, 177)) ('prolactinoma', 'Phenotype', 'HP:0040278', (165, 177)) ('miR-29a-3p', 'Chemical', '-', (74, 84)) ('miR-29a-3p', 'Var', (74, 84)) ('prolactinoma', 'Disease', 'MESH:D015175', (89, 101)) ('beta-catenin', 'Gene', '84353', (149, 161)) ('prolactinoma', 'Disease', 'MESH:D015175', (165, 177)) ('prolactinoma', 'Phenotype', 'HP:0040278', (89, 101)) 17485 33714404 Heart Failure (HF) is a clinical syndrome characterized by the following features: typical symptoms (breathlessness at rest or on exercise, fatigue, tiredness, ankle swelling) and signs (tachycardia, tachypnea, pulmonary rales, pleural effusion, raised jugular venous pressure, peripheral edema, hepatomegaly) and objective evidence of a structural or functional abnormality of the heart at rest (cardiomegaly, third heart sound, cardiac murmurs, abnormality on the echocardiogram, raised natriuretic peptide concentration). ('tiredness', 'Disease', (149, 158)) ('third heart sound', 'Phenotype', 'HP:0031658', (411, 428)) ('hepatomegaly', 'Disease', (296, 308)) ('tiredness', 'Disease', 'MESH:D005221', (149, 158)) ('rales', 'Phenotype', 'HP:0030830', (221, 226)) ('raised natriuretic peptide concentration', 'Phenotype', 'HP:0020183', (482, 522)) ('ankle swelling', 'Disease', 'MESH:D016512', (160, 174)) ('Heart Failure', 'Phenotype', 'HP:0001635', (0, 13)) ('tachypnea', 'Phenotype', 'HP:0002789', (200, 209)) ('Heart Failure', 'Disease', 'MESH:D006333', (0, 13)) ('hepatomegaly', 'Disease', 'MESH:D006529', (296, 308)) ('cardiac murmurs', 'CPA', (430, 445)) ('third heart sound', 'CPA', (411, 428)) ('cardiac murmurs', 'Phenotype', 'HP:0030148', (430, 445)) ('cardiomegaly', 'Disease', 'MESH:D006332', (397, 409)) ('cardiomegaly', 'Disease', (397, 409)) ('abnormality of the heart', 'Phenotype', 'HP:0001627', (363, 387)) ('tachycardia', 'Phenotype', 'HP:0001649', (187, 198)) ('raised jugular venous pressure', 'MPA', (246, 276)) ('hepatomegaly', 'Phenotype', 'HP:0002240', (296, 308)) ('pleural effusion', 'Disease', (228, 244)) ('tachycardia', 'Disease', 'MESH:D013610', (187, 198)) ('tachycardia', 'Disease', (187, 198)) ('fatigue', 'Disease', (140, 147)) ('fatigue', 'Phenotype', 'HP:0012378', (140, 147)) ('ankle swelling', 'Disease', (160, 174)) ('abnormality', 'Var', (447, 458)) ('ankle swelling', 'Phenotype', 'HP:0001785', (160, 174)) ('peripheral edema', 'Phenotype', 'HP:0012398', (278, 294)) ('edema', 'Phenotype', 'HP:0000969', (289, 294)) ('raised jugular venous pressure', 'Phenotype', 'HP:0030848', (246, 276)) ('pleural effusion', 'Disease', 'MESH:D010996', (228, 244)) ('cardiomegaly', 'Phenotype', 'HP:0001640', (397, 409)) ('tachypnea', 'Disease', 'MESH:D059246', (200, 209)) ('tiredness', 'Phenotype', 'HP:0012378', (149, 158)) ('pulmonary rales', 'Disease', (211, 226)) ('abnormality on the echocardiogram', 'Phenotype', 'HP:0003116', (447, 480)) ('edema', 'Disease', 'MESH:D004487', (289, 294)) ('Heart Failure', 'Disease', (0, 13)) ('edema', 'Disease', (289, 294)) ('fatigue', 'Disease', 'MESH:D005221', (140, 147)) ('pleural effusion', 'Phenotype', 'HP:0002202', (228, 244)) ('tachypnea', 'Disease', (200, 209)) 17518 33714404 The same study also showed significant correlation of high TSH (subclinical hypothyroidism), high free T4 and low total T3 levels with increased mortality over 4 years. ('hypothyroidism', 'Disease', 'MESH:D007037', (76, 90)) ('hypothyroidism', 'Phenotype', 'HP:0000821', (76, 90)) ('T3', 'Chemical', 'MESH:D014284', (120, 122)) ('mortality', 'Disease', (145, 154)) ('high', 'Var', (54, 58)) ('TSH', 'MPA', (59, 62)) ('subclinical hypothyroidism', 'Phenotype', 'HP:0008223', (64, 90)) ('hypothyroidism', 'Disease', (76, 90)) ('free T4', 'MPA', (98, 105)) ('high TSH', 'Phenotype', 'HP:0002925', (54, 62)) ('mortality', 'Disease', 'MESH:D003643', (145, 154)) ('low', 'NegReg', (110, 113)) 17571 33714404 T2-hyperintensity in Cardiac Magnetic Resonance (CMR) may represent edema associated with acromegaly which predicts reversibility with treatment. ('acromegaly', 'Disease', 'MESH:D000172', (90, 100)) ('edema', 'Disease', (68, 73)) ('acromegaly', 'Disease', (90, 100)) ('acromegaly', 'Phenotype', 'HP:0000845', (90, 100)) ('hyperintensity in Cardiac Magnetic Resonance', 'Phenotype', 'HP:0030890', (3, 47)) ('edema', 'Disease', 'MESH:D004487', (68, 73)) ('edema', 'Phenotype', 'HP:0000969', (68, 73)) ('T2-hyperintensity', 'Var', (0, 17)) ('Cardiac Magnetic', 'MPA', (21, 37)) 17592 33714404 Carney complex is an autosomal dominant disorder due to mutation in protein regulatory kinase subunit (PRKR 1 alpha). ('autosomal dominant disorder', 'Disease', (21, 48)) ('Carney complex', 'Disease', (0, 14)) ('autosomal dominant disorder', 'Disease', 'MESH:D030342', (21, 48)) ('mutation', 'Var', (56, 64)) ('PRKR 1 alpha', 'Gene', (103, 115)) 17622 33714404 However, results of a preliminary intervention study still do not clearly prove the therapeutic benefits of inhibiting prolactin production to expedite the recovery. ('prolactin', 'Gene', '5617', (119, 128)) ('inhibiting', 'Var', (108, 118)) ('prolactin', 'Gene', (119, 128)) 17635 33714404 It is caused by loss of function mutation of HSD11B2 gene. ('HSD11B2', 'Gene', '3291', (45, 52)) ('HSD11B2', 'Gene', (45, 52)) ('mutation', 'Var', (33, 41)) ('loss of function', 'NegReg', (16, 32)) 17636 33714404 However, mutations in the HSD11B2 gene (at different alleles) can result in milder phenotypes that are difficult to distinguish from essential hypertension. ('hypertension', 'Disease', 'MESH:D006973', (143, 155)) ('mutations', 'Var', (9, 18)) ('hypertension', 'Disease', (143, 155)) ('HSD11B2', 'Gene', '3291', (26, 33)) ('hypertension', 'Phenotype', 'HP:0000822', (143, 155)) ('result in', 'Reg', (66, 75)) ('HSD11B2', 'Gene', (26, 33)) 17654 33714404 The action of excess progesterone on the mutant mineralocorticoid receptor has been implicated as the cause of exacerbation of this condition during pregnancy. ('excess progesterone', 'Phenotype', 'HP:0031216', (14, 33)) ('mutant', 'Var', (41, 47)) ('mineralocorticoid receptor', 'Gene', (48, 74)) ('progesterone', 'Chemical', 'MESH:D011374', (21, 33)) ('mineralocorticoid receptor', 'Gene', '4306', (48, 74)) 17699 32887459 Assessing miR-451a to miR-23a-3p ratio no red blood cell (RBC) contamination was detected in any of our samples.MiRNAs which are considered indicating red-blood-cell or platelet cellular contamination also showed low variance (0.4 for miR-142-3p and 0.3 for miR451a/miR-23a-3p, respectively). ('miR451a', 'Gene', (258, 265)) ('miR-451a', 'Gene', '574411', (10, 18)) ('miR-451a', 'Gene', (10, 18)) ('miR451a', 'Gene', '574411', (258, 265)) ('miR-142-3p', 'Var', (235, 245)) 17705 32887459 Of the 33 significantly differently expressed miRNAs between controls and tumor sera samples we selected 6 underexpressed miRNAs (let-7b-5p, let-7i-5p; miR-143-3p; miR-30d-5p; miR-451a; miR-486-5p) in pNET/PPGL samples compared to controls) based on miRNA abundance for further investigation. ('miR-30d', 'Gene', '407033', (164, 171)) ('miR-486-5p', 'Var', (186, 196)) ('tumor', 'Disease', 'MESH:D009369', (74, 79)) ('let-7b', 'Gene', (130, 136)) ('let-7i', 'Gene', '406891', (141, 147)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('miR-486-5p', 'Chemical', '-', (186, 196)) ('tumor', 'Disease', (74, 79)) ('miR-451a', 'Gene', (176, 184)) ('miR-30d', 'Gene', (164, 171)) ('miR-451a', 'Gene', '574411', (176, 184)) ('NET', 'Phenotype', 'HP:0100634', (202, 205)) ('let-7i', 'Gene', (141, 147)) ('let-7b', 'Gene', '406884', (130, 136)) 17707 32887459 After dissecting tumor groups, the underexpression of miR-30d-5p, miR-451a, and miR-486-5p was significant in pNET patients with high CgA levels and let-7b-5p in PPGL cases compared to healthy controls without PPI treatment (Figure 2B). ('NET', 'Phenotype', 'HP:0100634', (111, 114)) ('pNET', 'Disease', (110, 114)) ('miR-486-5p', 'Var', (80, 90)) ('patients', 'Species', '9606', (115, 123)) ('tumor', 'Disease', (17, 22)) ('CgA', 'Gene', '1113', (134, 137)) ('miR-486-5p', 'Chemical', '-', (80, 90)) ('miR-451a', 'Gene', '574411', (66, 74)) ('miR-451a', 'Gene', (66, 74)) ('miR-30d', 'Gene', (54, 61)) ('CgA', 'Gene', (134, 137)) ('PPGL', 'Disease', (162, 166)) ('let-7b', 'Gene', '406884', (149, 155)) ('tumor', 'Disease', 'MESH:D009369', (17, 22)) ('let-7b', 'Gene', (149, 155)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) ('miR-30d', 'Gene', '407033', (54, 61)) 17709 32887459 However, let-7b-5p, let-7i-5p; miR-143-3p; miR-30d-5p; miR-451a and miR-486-5p showed lower expression in samples with high (>100 ng/mL) CgA levels compared to samples with normal CgA level (<=100 ng/mL) (Figure 3A). ('let-7i', 'Gene', '406891', (20, 26)) ('CgA', 'Gene', (180, 183)) ('miR-30d', 'Gene', '407033', (43, 50)) ('CgA', 'Gene', '1113', (137, 140)) ('miR-451a', 'Gene', '574411', (55, 63)) ('miR-451a', 'Gene', (55, 63)) ('lower', 'NegReg', (86, 91)) ('miR-486-5p', 'Var', (68, 78)) ('let-7i', 'Gene', (20, 26)) ('CgA', 'Gene', (137, 140)) ('let-7b', 'Gene', '406884', (9, 15)) ('CgA', 'Gene', '1113', (180, 183)) ('miR-486-5p', 'Chemical', '-', (68, 78)) ('miR-30d', 'Gene', (43, 50)) ('expression', 'MPA', (92, 102)) ('let-7b', 'Gene', (9, 15)) 17713 32887459 In samples obtained from PPGL patients only miR-486-5p showed an inverse correlation with CgA (Table 2). ('CgA', 'Gene', (90, 93)) ('CgA', 'Gene', '1113', (90, 93)) ('miR-486-5p', 'Var', (44, 54)) ('patients', 'Species', '9606', (30, 38)) ('miR-486-5p', 'Chemical', '-', (44, 54)) 17714 32887459 We found that in serum samples obtained from PPGL patients with germline mutations (SDHB, RET, VHL, or NF1) miR-486-5p and miR-30d-5p were downregulated compared to sporadic patients (Figure 3C). ('miR-486-5p', 'Var', (108, 118)) ('RET', 'Gene', (90, 93)) ('NF1', 'Gene', '4763', (103, 106)) ('miR-30d', 'Gene', '407033', (123, 130)) ('VHL', 'Gene', (95, 98)) ('SDHB', 'Gene', '6390', (84, 88)) ('patients', 'Species', '9606', (50, 58)) ('RET', 'Gene', '5979', (90, 93)) ('VHL', 'Gene', '7428', (95, 98)) ('miR-486-5p', 'Chemical', '-', (108, 118)) ('patients', 'Species', '9606', (174, 182)) ('SDHB', 'Gene', (84, 88)) ('downregulated', 'NegReg', (139, 152)) ('miR-30d', 'Gene', (123, 130)) ('NF1', 'Gene', (103, 106)) 17715 32887459 In patients with SDHB germline mutation beside the underexpression of miR-30d-5p and miR-486-5p, let-7b-5p and let-7i-5p also showed downregulation compared to serum samples of patients with SDHB wild type (Figure 3D). ('SDHB', 'Gene', (191, 195)) ('miR-30d', 'Gene', '407033', (70, 77)) ('patients', 'Species', '9606', (177, 185)) ('miR-486-5p', 'Var', (85, 95)) ('SDHB', 'Gene', '6390', (191, 195)) ('SDHB', 'Gene', '6390', (17, 21)) ('let-7i', 'Gene', '406891', (111, 117)) ('downregulation', 'NegReg', (133, 147)) ('patients', 'Species', '9606', (3, 11)) ('SDHB', 'Gene', (17, 21)) ('let-7b', 'Gene', '406884', (97, 103)) ('let-7b', 'Gene', (97, 103)) ('let-7i', 'Gene', (111, 117)) ('miR-30d', 'Gene', (70, 77)) ('miR-486-5p', 'Chemical', '-', (85, 95)) 17718 32887459 Altogether 6 miRNAs (let-7b-5p, let-7i-5p, miR-143-3p, miR-30d-5p, miR-451a, and miR-486-5p) were assessed individually and in combinations (Table 3). ('let-7i', 'Gene', (32, 38)) ('miR-30d', 'Gene', (55, 62)) ('miR-486-5p', 'Var', (81, 91)) ('miR-143-3p', 'Var', (43, 53)) ('let-7b', 'Gene', '406884', (21, 27)) ('miR-30d', 'Gene', '407033', (55, 62)) ('let-7b', 'Gene', (21, 27)) ('let-7i', 'Gene', '406891', (32, 38)) ('miR-451a', 'Gene', '574411', (67, 75)) ('miR-451a', 'Gene', (67, 75)) ('miR-486-5p', 'Chemical', '-', (81, 91)) 17719 32887459 In the pNET group compared to CgA the use of individual let-7b-5p, miR-30d-5p, miR-451a, and miR-486-5p in ROC analysis resulted in better discrimination (Table 3). ('discrimination', 'MPA', (139, 153)) ('NET', 'Phenotype', 'HP:0100634', (8, 11)) ('miR-451a', 'Gene', '574411', (79, 87)) ('miR-451a', 'Gene', (79, 87)) ('CgA', 'Gene', (30, 33)) ('miR-30d', 'Gene', (67, 74)) ('miR-486-5p', 'Chemical', '-', (93, 103)) ('let-7b', 'Gene', '406884', (56, 62)) ('CgA', 'Gene', '1113', (30, 33)) ('let-7b', 'Gene', (56, 62)) ('better', 'PosReg', (132, 138)) ('miR-30d', 'Gene', '407033', (67, 74)) ('miR-486-5p', 'Var', (93, 103)) 17723 32887459 The use of the individual expression of let-7b-5p or miR-143-3p yielded better discrimination from healthy controls compared to CgA alone (Table 3). ('let-7b', 'Gene', '406884', (40, 46)) ('let-7b', 'Gene', (40, 46)) ('CgA', 'Gene', '1113', (128, 131)) ('miR-143-3p', 'Var', (53, 63)) ('CgA', 'Gene', (128, 131)) 17726 32887459 Using binary logistic regression model the combination of CgA with 3 miRNAs (let-7b-5p, miR-143-3p and miR-486-5p) yielded higher specificity compared to CgA alone with 83.6% accuracy in discrimination of normal samples from PPGL samples, however, with lower sensitivity (AUC: 0.862; 85% sensitivity; 82.7% specificity) (Table 3). ('CgA', 'Gene', '1113', (154, 157)) ('CgA', 'Gene', '1113', (58, 61)) ('let-7b', 'Gene', '406884', (77, 83)) ('let-7b', 'Gene', (77, 83)) ('miR-486-5p', 'Chemical', '-', (103, 113)) ('higher', 'PosReg', (123, 129)) ('CgA', 'Gene', (154, 157)) ('miR-143-3p', 'Var', (88, 98)) ('miR-486-5p', 'Var', (103, 113)) ('CgA', 'Gene', (58, 61)) ('specificity', 'MPA', (130, 141)) 17728 32887459 In PPGL, while miR-101-3p showed higher expression in malignant vs. benign PPGLs, in serum, it was downregulated compared to controls. ('expression', 'MPA', (40, 50)) ('higher', 'PosReg', (33, 39)) ('downregulated', 'NegReg', (99, 112)) ('PPGLs', 'Gene', (75, 80)) ('miR-101-3p', 'Var', (15, 25)) ('miR-101-3p', 'Chemical', '-', (15, 25)) 17729 32887459 However, miR-16-5p and miR-451a as putative tumor suppressor miRNAs were downregulated in both tissue and serum (Table 4). ('miR-16-5p', 'Var', (9, 18)) ('tumor', 'Disease', 'MESH:D009369', (44, 49)) ('downregulated', 'NegReg', (73, 86)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('miR-451a', 'Gene', '574411', (23, 31)) ('miR-451a', 'Gene', (23, 31)) ('tumor', 'Disease', (44, 49)) 17732 32887459 Our data revealed a low global miRNA expression (abundance) in sera of patients with pNET/PPGL compared to normal controls. ('low', 'NegReg', (20, 23)) ('NET', 'Phenotype', 'HP:0100634', (86, 89)) ('pNET/PPGL', 'Var', (85, 94)) ('patients', 'Species', '9606', (71, 79)) 17741 32887459 Similarly, to our findings, in breast cancer, the same miR-203a-3p was overexpressed both on a tissue level and in exosomes secreted by tumor cells. ('cancer', 'Phenotype', 'HP:0002664', (38, 44)) ('breast cancer', 'Disease', 'MESH:D001943', (31, 44)) ('tumor', 'Disease', 'MESH:D009369', (136, 141)) ('ret', 'Gene', (127, 130)) ('breast cancer', 'Disease', (31, 44)) ('overexpressed', 'PosReg', (71, 84)) ('ret', 'Gene', '5979', (127, 130)) ('breast cancer', 'Phenotype', 'HP:0003002', (31, 44)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('miR-203a-3p', 'Var', (55, 66)) ('tumor', 'Disease', (136, 141)) 17743 32887459 These data raise the possibility that miR-203a-3p may potentially be originated from tumor cells and can be considered as an oncomiR. ('tumor', 'Disease', (85, 90)) ('tumor', 'Disease', 'MESH:D009369', (85, 90)) ('miR-203a-3p', 'Var', (38, 49)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) 17759 32887459 Let-7i-5p is a well-known tumor suppressor miRNA which expression is negatively correlated with prognosis. ('negatively', 'NegReg', (69, 79)) ('tumor', 'Disease', 'MESH:D009369', (26, 31)) ('expression', 'MPA', (55, 65)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('tumor', 'Disease', (26, 31)) ('Let-7i-5p', 'Var', (0, 9)) 17769 32887459 Let-7b-5p, let-7i-5p, miR-30d-5p, and miR-486-5p were downregulated in SDHB mutant cases compared to SDHB wild type cases indicating that the etiology of PPGL may influence the circulating miRNA pool. ('influence', 'Reg', (163, 172)) ('circulating miRNA pool', 'MPA', (177, 199)) ('Let-7b', 'Gene', '406884', (0, 6)) ('SDHB', 'Gene', (101, 105)) ('let-7i', 'Gene', '406891', (11, 17)) ('miR-486-5p', 'Chemical', '-', (38, 48)) ('SDHB', 'Gene', '6390', (71, 75)) ('mutant', 'Var', (76, 82)) ('Let-7b', 'Gene', (0, 6)) ('miR-30d', 'Gene', (22, 29)) ('SDHB', 'Gene', (71, 75)) ('miR-486-5p', 'Var', (38, 48)) ('let-7i', 'Gene', (11, 17)) ('miR-30d', 'Gene', '407033', (22, 29)) ('downregulated', 'NegReg', (54, 67)) ('SDHB', 'Gene', '6390', (101, 105)) 17780 32887459 Low-CgA (<100 ng/mL) pNET group consisted of 9, high-CgA (>100 ng/mL) pNET group consisted of 16 patients. ('NET', 'Phenotype', 'HP:0100634', (71, 74)) ('NET', 'Phenotype', 'HP:0100634', (22, 25)) ('CgA', 'Gene', '1113', (4, 7)) ('CgA', 'Gene', (53, 56)) ('<100', 'Var', (9, 13)) ('patients', 'Species', '9606', (97, 105)) ('CgA', 'Gene', (4, 7)) ('CgA', 'Gene', '1113', (53, 56)) 17806 30589099 Clinical Practice Guidance: Surveillance for phaeochromocytoma and paraganglioma in paediatric succinate dehydrogenase gene mutation carriers The succinate dehydrogenase (SDH) enzyme complex functions as a key enzyme coupling the oxidation of succinate to fumarate in the citric acid cycle. ('succinate dehydrogenase', 'Gene', (95, 118)) ('succinate', 'Chemical', 'MESH:D013386', (146, 155)) ('fumarate', 'Chemical', 'MESH:D005650', (256, 264)) ('SDH', 'Gene', (171, 174)) ('succinate', 'Chemical', 'MESH:D013386', (243, 252)) ('succinate dehydrogenase', 'Gene', '6390', (146, 169)) ('phaeochromocytoma and paraganglioma', 'Disease', 'MESH:D010235', (45, 80)) ('carriers', 'Var', (133, 141)) ('succinate', 'Chemical', 'MESH:D013386', (95, 104)) ('succinate dehydrogenase', 'Gene', (146, 169)) ('SDH', 'Gene', '6390', (171, 174)) ('citric acid', 'Chemical', 'MESH:D019343', (272, 283)) ('succinate dehydrogenase', 'Gene', '6390', (95, 118)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) ('mutation carriers', 'Var', (124, 141)) 17807 30589099 Inactivation of this enzyme complex results in the cellular accumulation of the oncometabolite succinate, which is postulated to be a key driver in tumorigenesis. ('cellular accumulation of', 'MPA', (51, 75)) ('succinate', 'Chemical', 'MESH:D013386', (95, 104)) ('Inactivation', 'Var', (0, 12)) ('results in', 'Reg', (36, 46)) 17809 30589099 Biallelic inactivation (typically resulting from one inherited and one somatic event) at one of the four genes encoding the SDH complex (SDHA/B/C/D) is the most common cause for SDH deficient (dSDH) tumours. ('SDH', 'Gene', (194, 197)) ('tumour', 'Phenotype', 'HP:0002664', (199, 205)) ('SDH deficient (dSDH) tumours', 'Disease', 'MESH:C535803', (178, 206)) ('SDH', 'Gene', '6390', (124, 127)) ('SDH', 'Gene', (178, 181)) ('SDH', 'Gene', (137, 140)) ('tumours', 'Phenotype', 'HP:0002664', (199, 206)) ('SDH', 'Gene', '6390', (194, 197)) ('Biallelic inactivation', 'Var', (0, 22)) ('cause', 'Reg', (168, 173)) ('SDHA', 'Gene', '6389', (137, 141)) ('SDH', 'Gene', (124, 127)) ('SDH', 'Gene', '6390', (178, 181)) ('SDH', 'Gene', '6390', (137, 140)) ('SDHA', 'Gene', (137, 141)) 17810 30589099 Germline mutations in the SDHx genes predispose to a spectrum of tumours including phaeochromocytoma and paraganglioma (PPGL), wild type gastrointestinal stromal tumours (wtGIST) and, less commonly, renal cell carcinoma and pituitary tumours. ('Germline mutations', 'Var', (0, 18)) ('carcinoma', 'Phenotype', 'HP:0030731', (210, 219)) ('tumours', 'Disease', (162, 169)) ('PPGL', 'Disease', (120, 124)) ('tumours', 'Phenotype', 'HP:0002664', (234, 241)) ('type gastrointestinal stromal tumours', 'Disease', 'MESH:D046152', (132, 169)) ('tumours', 'Phenotype', 'HP:0002664', (162, 169)) ('tumours', 'Disease', 'MESH:D009369', (234, 241)) ('tumours', 'Disease', (65, 72)) ('SDH', 'Gene', (26, 29)) ('type gastrointestinal stromal tumours', 'Disease', (132, 169)) ('tumours', 'Disease', 'MESH:D009369', (162, 169)) ('tumour', 'Phenotype', 'HP:0002664', (234, 240)) ('tumours', 'Phenotype', 'HP:0002664', (65, 72)) ('tumour', 'Phenotype', 'HP:0002664', (162, 168)) ('tumours', 'Disease', 'MESH:D009369', (65, 72)) ('renal cell carcinoma', 'Disease', 'MESH:D002292', (199, 219)) ('tumour', 'Phenotype', 'HP:0002664', (65, 71)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (224, 240)) ('pituitary tumours', 'Disease', 'MESH:D010911', (224, 241)) ('PPGL', 'Disease', 'MESH:D010235', (120, 124)) ('renal cell carcinoma', 'Disease', (199, 219)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (199, 219)) ('paraganglioma', 'Phenotype', 'HP:0002668', (105, 118)) ('predispose', 'Reg', (37, 47)) ('SDH', 'Gene', '6390', (26, 29)) ('pituitary tumours', 'Disease', (224, 241)) ('phaeochromocytoma and paraganglioma', 'Disease', 'MESH:D010235', (83, 118)) ('tumours', 'Disease', (234, 241)) 17811 30589099 Furthermore, mutations in the SDHx genes, particularly SDHB, predispose to a higher risk of malignant PPGL, which is associated with a 5-year mortality of 50%. ('SDHB', 'Gene', (55, 59)) ('SDH', 'Gene', (30, 33)) ('SDH', 'Gene', '6390', (55, 58)) ('PPGL', 'Disease', (102, 106)) ('PPGL', 'Disease', 'MESH:D010235', (102, 106)) ('associated', 'Reg', (117, 127)) ('SDH', 'Gene', '6390', (30, 33)) ('SDH', 'Gene', (55, 58)) ('predispose', 'Reg', (61, 71)) ('SDHB', 'Gene', '6390', (55, 59)) ('mutations', 'Var', (13, 22)) 17812 30589099 There is general agreement that biochemical and imaging surveillance should be offered to asymptomatic carriers of SDHx gene mutations in the expectation that this will reduce the morbidity and mortality associated with dSDH tumours. ('mutations', 'Var', (125, 134)) ('dSDH tumours', 'Disease', (220, 232)) ('dSDH tumours', 'Disease', 'MESH:D009369', (220, 232)) ('SDH', 'Gene', '6390', (221, 224)) ('SDH', 'Gene', '6390', (115, 118)) ('tumour', 'Phenotype', 'HP:0002664', (225, 231)) ('SDH', 'Gene', (115, 118)) ('tumours', 'Phenotype', 'HP:0002664', (225, 232)) ('reduce', 'NegReg', (169, 175)) ('SDH', 'Gene', (221, 224)) 17814 30589099 Here, we address the question: "What age should clinical, biochemical and radiological surveillance for PPGL be initiated in paediatric SDHx mutation carriers?". ('PPGL', 'Disease', 'MESH:D010235', (104, 108)) ('SDH', 'Gene', (136, 139)) ('PPGL', 'Disease', (104, 108)) ('mutation', 'Var', (141, 149)) ('SDH', 'Gene', '6390', (136, 139)) 17816 30589099 However the recent molecular revolution has brought with it an understanding that PPGL have a rich hereditary background, as 30% of PPGL are now known to be familial.1 Germline mutations in the SDHx genes account for 30-40% of hereditary PPGL cases and mutations in the SDHB gene in particular predict a higher risk of malignant potential.2 Although there is is general agreement that biochemical and imaging surveillance should be offered to asymptomatic carriers of SDHx gene mutations in the expectation that this will reduce the morbidity and mortality associated with SDH deficient tumours,3 there is at present no consensus on when and how surveillance should be performed in children and young adults. ('mutations', 'Var', (478, 487)) ('PPGL', 'Disease', 'MESH:D010235', (132, 136)) ('SDHB', 'Gene', (270, 274)) ('reduce', 'NegReg', (522, 528)) ('SDH', 'Gene', '6390', (270, 273)) ('PPGL', 'Disease', (238, 242)) ('SDH', 'Gene', (194, 197)) ('SDH', 'Gene', '6390', (468, 471)) ('SDH', 'Gene', (573, 576)) ('tumours', 'Disease', (587, 594)) ('PPGL', 'Disease', 'MESH:D010235', (82, 86)) ('PPGL', 'Disease', (132, 136)) ('SDH', 'Gene', (270, 273)) ('tumours', 'Phenotype', 'HP:0002664', (587, 594)) ('SDH', 'Gene', (468, 471)) ('tumours', 'Disease', 'MESH:D009369', (587, 594)) ('children', 'Species', '9606', (682, 690)) ('tumour', 'Phenotype', 'HP:0002664', (587, 593)) ('PPGL', 'Disease', (82, 86)) ('SDHB', 'Gene', '6390', (270, 274)) ('PPGL', 'Disease', 'MESH:D010235', (238, 242)) ('SDH', 'Gene', '6390', (194, 197)) ('SDH', 'Gene', '6390', (573, 576)) 17819 30589099 Whilst there are several reports of tumour development in paediatric SDHx mutation carriers, the prevalence of disease among paediatric nonprobands remains low. ('mutation', 'Var', (74, 82)) ('SDH', 'Gene', '6390', (69, 72)) ('tumour', 'Disease', 'MESH:D009369', (36, 42)) ('tumour', 'Disease', (36, 42)) ('SDH', 'Gene', (69, 72)) ('tumour', 'Phenotype', 'HP:0002664', (36, 42)) 17820 30589099 A review of the genotype information demonstrated that 77 (73.3%) patients had a germline pathogenic SDHB variant, 25 (23.8%) cases a pathogenic SDHD variant and three cases (2.9%) a pathogenic SDHC variant (Figure 1). ('SDHC', 'Gene', '6391', (194, 198)) ('pathogenic', 'Reg', (90, 100)) ('SDHB', 'Gene', (101, 105)) ('SDHD', 'Gene', (145, 149)) ('variant', 'Var', (150, 157)) ('pathogenic', 'Reg', (134, 144)) ('variant', 'Var', (106, 113)) ('SDHC', 'Gene', (194, 198)) ('SDHB', 'Gene', '6390', (101, 105)) ('patients', 'Species', '9606', (66, 74)) ('SDHD', 'Gene', '6392', (145, 149)) 17821 30589099 The variant type was available for 93 patients and included 20 (21.6%) nonsense variants, 28 (30.1%) missense variants, 13 (13.9%) splice site variants, 26 (27.9%) frameshift variants. ('frameshift variants', 'Var', (164, 183)) ('patients', 'Species', '9606', (38, 46)) ('missense variants', 'Var', (101, 118)) 17823 30589099 There was no significant difference in the mean age at presentation with PPGL in those patients with germline SDHB variants (13.1 years) compared to those with SDHC (13.3 years) or SDHD variants (14.6 years) (P = 0.78), and there was no significant difference in the mean age at presentation of those patients presenting with malignant tumours vs those presenting with localized tumours (12.8 vs 13.4 years, P = 0.9). ('localized tumours', 'Disease', 'MESH:D009364', (369, 386)) ('patients', 'Species', '9606', (301, 309)) ('variants', 'Var', (115, 123)) ('SDHC', 'Gene', '6391', (160, 164)) ('SDHB', 'Gene', (110, 114)) ('tumours', 'Phenotype', 'HP:0002664', (336, 343)) ('SDHD', 'Gene', '6392', (181, 185)) ('localized tumours', 'Disease', (369, 386)) ('PPGL', 'Disease', 'MESH:D010235', (73, 77)) ('tumour', 'Phenotype', 'HP:0002664', (336, 342)) ('SDHC', 'Gene', (160, 164)) ('SDHD', 'Gene', (181, 185)) ('tumours', 'Phenotype', 'HP:0002664', (379, 386)) ('malignant tumours', 'Disease', 'MESH:D009369', (326, 343)) ('malignant tumours', 'Disease', (326, 343)) ('PPGL', 'Disease', (73, 77)) ('tumour', 'Phenotype', 'HP:0002664', (379, 385)) ('SDHB', 'Gene', '6390', (110, 114)) ('patients', 'Species', '9606', (87, 95)) 17828 30589099 Malignant tumours were reported in 26 patients (24.8%), and the majority of malignant cases were identified in patients with a pathogenic SDHB germline variant (22 patients, 84.6%). ('SDHB', 'Gene', (138, 142)) ('Malignant tumours', 'Disease', (0, 17)) ('variant', 'Var', (152, 159)) ('tumour', 'Phenotype', 'HP:0002664', (10, 16)) ('Malignant tumours', 'Disease', 'MESH:D009369', (0, 17)) ('tumours', 'Phenotype', 'HP:0002664', (10, 17)) ('patients', 'Species', '9606', (38, 46)) ('patients', 'Species', '9606', (164, 172)) ('SDHB', 'Gene', '6390', (138, 142)) ('patients', 'Species', '9606', (111, 119)) 17829 30589099 Of note, this is a lower figure than what King et al4 found in their study of metastatic PPGL related to primary tumour development in childhood and adolescence, where 85.2% (n = 23) of their paediatric and adolescent patients with SDHB mutations developed metastatic disease. ('tumour', 'Phenotype', 'HP:0002664', (113, 119)) ('developed', 'Reg', (247, 256)) ('SDHB', 'Gene', '6390', (232, 236)) ('patients', 'Species', '9606', (218, 226)) ('primary tumour', 'Disease', (105, 119)) ('PPGL', 'Disease', (89, 93)) ('SDHB', 'Gene', (232, 236)) ('metastatic disease', 'CPA', (257, 275)) ('primary tumour', 'Disease', 'MESH:D009369', (105, 119)) ('PPGL', 'Disease', 'MESH:D010235', (89, 93)) ('mutations', 'Var', (237, 246)) ('child', 'Species', '9606', (135, 140)) 17832 30589099 The Endocrine Society recommends that surveillance should comprise annual biochemistry (urinary or plasma metanephrines) and sporadic cross-sectional imaging of the skull base, neck, thorax, abdomen and pelvis (MRI is the preferred radiation sparing imaging modality).3 There are no recommendations as to the lower age limit of genetic testing of children in SDHx mutation families. ('metanephrines', 'Chemical', 'MESH:D008676', (106, 119)) ('children', 'Species', '9606', (347, 355)) ('SDH', 'Gene', '6390', (359, 362)) ('mutation', 'Var', (364, 372)) ('SDH', 'Gene', (359, 362)) 17833 30589099 In the UK, genetic testing for inherited neoplasia syndromes is usually conducted around the time when clinical, biochemical and radiological surveillance would begin.53 It is also important to note that as SDHD variants have a preferential paternal transmission pattern of inheritance, clinical surveillance is only recommended for those carriers that inherit an SDHD variant from their father. ('SDHD', 'Gene', (207, 211)) ('SDHD', 'Gene', '6392', (207, 211)) ('inherited neoplasia syndromes', 'Disease', 'MESH:D009369', (31, 60)) ('neoplasia', 'Phenotype', 'HP:0002664', (41, 50)) ('inherited neoplasia syndromes', 'Disease', (31, 60)) ('time', 'Disease', 'MESH:D000377', (93, 97)) ('SDHD', 'Gene', (364, 368)) ('time', 'Disease', (93, 97)) ('paternal transmission', 'CPA', (241, 262)) ('variants', 'Var', (212, 220)) ('SDHD', 'Gene', '6392', (364, 368)) 17834 30589099 To our knowledge, no guidance exists to inform the most appropriate starting age for clinical, biochemical and radiological surveillance in paediatric SDHx mutation carriers. ('SDH', 'Gene', '6390', (151, 154)) ('SDH', 'Gene', (151, 154)) ('mutation', 'Var', (156, 164)) 17837 30589099 Recent studies, focused on more accurately predicting the clinical penetrance of SDHx genes, have adopted methods to control for ascertainment bias and suggest an estimated clinical penetrance of around 20% by age 50 years for SDHB mutation carriers.64 In the largest study of SDHB and SDHD mutation carriers yet reported, Andrews et al65 estimated the risks of PPGL and head and neck paraganglioma (HNPGL) by ages at 5, 10, 16 and 18 years in SDHB mutation carriers (n = 598 with clinical information available) and in SDHD carriers (n = 137 with clinical information available) (Table 2). ('SDH', 'Gene', (521, 524)) ('SDHB', 'Gene', (445, 449)) ('SDHD', 'Gene', '6392', (287, 291)) ('SDH', 'Gene', '6390', (445, 448)) ('SDH', 'Gene', (227, 230)) ('SDH', 'Gene', '6390', (287, 290)) ('head and neck paraganglioma', 'Disease', 'MESH:D006258', (372, 399)) ('SDH', 'Gene', (81, 84)) ('SDHB', 'Gene', (278, 282)) ('PPGL', 'Disease', (363, 367)) ('SDH', 'Gene', '6390', (278, 281)) ('HNPGL', 'Disease', (401, 406)) ('SDHD', 'Gene', (287, 291)) ('paraganglioma', 'Phenotype', 'HP:0002668', (386, 399)) ('SDH', 'Gene', (445, 448)) ('SDHB', 'Gene', '6390', (227, 231)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (372, 399)) ('SDH', 'Gene', (287, 290)) ('SDHD', 'Gene', '6392', (521, 525)) ('SDH', 'Gene', (278, 281)) ('SDH', 'Gene', '6390', (521, 524)) ('SDHB', 'Gene', (227, 231)) ('SDHB', 'Gene', '6390', (445, 449)) ('HNPGL', 'Disease', 'MESH:D006258', (401, 406)) ('SDH', 'Gene', '6390', (227, 230)) ('mutation', 'Var', (450, 458)) ('SDH', 'Gene', '6390', (81, 84)) ('SDHD', 'Gene', (521, 525)) ('PPGL', 'Disease', 'MESH:D010235', (363, 367)) ('SDHB', 'Gene', '6390', (278, 282)) 17839 30589099 Using a different methodology, Benn et al recently estimated the lifetime penetrance of pathogenic SDHA, SDHB and SDHC variants by adopting an algorithm which compared allelic frequencies in 1815 cases (including cases from ref. ('SDHA', 'Gene', (99, 103)) ('SDHB', 'Gene', '6390', (105, 109)) ('pathogenic', 'Reg', (88, 98)) ('SDHB', 'Gene', (105, 109)) ('SDHA', 'Gene', '6389', (99, 103)) ('time', 'Disease', 'MESH:D000377', (69, 73)) ('SDHC', 'Gene', '6391', (114, 118)) ('SDHC', 'Gene', (114, 118)) ('time', 'Disease', (69, 73)) ('variants', 'Var', (119, 127)) 17840 30589099 The estimated lifetime penetrance of pathogenic SDHA and SDHC variants was low (1.7% and 8.3%, respectively), whilst the penetrance for SDHB was similar to that previously reported at 20.2%.66 The authors also speculated that SDHx gene penetrance may be directly proportional to the risk of multifocal tumours as SDHB gene mutations are more commonly associated with multifocal tumours compared to SDHA gene mutations. ('multifocal tumours', 'Disease', 'MESH:D009369', (367, 385)) ('tumour', 'Phenotype', 'HP:0002664', (378, 384)) ('SDH', 'Gene', (226, 229)) ('tumours', 'Phenotype', 'HP:0002664', (378, 385)) ('SDH', 'Gene', (313, 316)) ('SDHB', 'Gene', (136, 140)) ('multifocal tumours', 'Disease', (291, 309)) ('SDH', 'Gene', '6390', (57, 60)) ('SDH', 'Gene', '6390', (136, 139)) ('SDHC', 'Gene', '6391', (57, 61)) ('SDHA', 'Gene', (398, 402)) ('SDH', 'Gene', '6390', (48, 51)) ('SDH', 'Gene', (398, 401)) ('SDHA', 'Gene', (48, 52)) ('tumours', 'Phenotype', 'HP:0002664', (302, 309)) ('SDHB', 'Gene', '6390', (313, 317)) ('time', 'Disease', (18, 22)) ('multifocal tumours', 'Disease', 'MESH:D009369', (291, 309)) ('SDHA', 'Gene', '6389', (398, 402)) ('SDHA', 'Gene', '6389', (48, 52)) ('mutations', 'Var', (323, 332)) ('SDH', 'Gene', (57, 60)) ('SDH', 'Gene', (136, 139)) ('tumour', 'Phenotype', 'HP:0002664', (302, 308)) ('SDH', 'Gene', (48, 51)) ('time', 'Disease', 'MESH:D000377', (18, 22)) ('SDHB', 'Gene', (313, 317)) ('SDHC', 'Gene', (57, 61)) ('SDH', 'Gene', '6390', (226, 229)) ('multifocal tumours', 'Disease', (367, 385)) ('SDH', 'Gene', '6390', (313, 316)) ('SDHB', 'Gene', '6390', (136, 140)) ('associated', 'Reg', (351, 361)) ('SDH', 'Gene', '6390', (398, 401)) 17841 30589099 Several factors complicate the decision when surveillance should be commenced in paediatric SDHx mutation carriers. ('SDH', 'Gene', '6390', (92, 95)) ('SDH', 'Gene', (92, 95)) ('mutation', 'Var', (97, 105)) 17842 30589099 Important considerations include the growing awareness that the lifetime penetrance of SDHB mutations is significantly lower (see above) than that estimated when the gene was first identified (originally estimated at 70%-80%). ('time', 'Disease', 'MESH:D000377', (68, 72)) ('lower', 'NegReg', (119, 124)) ('time', 'Disease', (68, 72)) ('mutations', 'Var', (92, 101)) ('SDHB', 'Gene', '6390', (87, 91)) ('SDHB', 'Gene', (87, 91)) 17846 30589099 Incidental findings may be associated with a psychological burden and additional health costs.68 Finally, there is extremely limited information on the specificity and sensitivity of surveillance modalities for child and adolescent SDHx mutation carriers. ('mutation', 'Var', (237, 245)) ('SDH', 'Gene', '6390', (232, 235)) ('child', 'Species', '9606', (211, 216)) ('SDH', 'Gene', (232, 235)) 17847 30589099 Rijken et al64 started surveillance in a 7-year-old SDHB mutation carrier by urinary catecholamines measurements, allowing for surveillance to commence without the stress of imaging or phlebotomy. ('mutation', 'Var', (57, 65)) ('SDHB', 'Gene', (52, 56)) ('urinary catecholamines', 'Phenotype', 'HP:0011976', (77, 99)) ('catecholamines', 'Chemical', 'MESH:D002395', (85, 99)) ('urinary', 'MPA', (77, 84)) ('SDHB', 'Gene', '6390', (52, 56)) 17851 30589099 However it must also be considered that ultrasound has a lower sensitivity and specificity compared with MRI in PPGL detection.3 The Endocrine Society clearly state that the morbidity associated with SDHB gene mutations requires particular attention,3 and therefore, more stringent screening efforts may be necessary in order to reduce the morbidity and mortality associated with SDHB-mutated PPGL. ('SDHB', 'Gene', '6390', (201, 205)) ('PPGL', 'Disease', (112, 116)) ('PPGL', 'Disease', 'MESH:D010235', (394, 398)) ('SDHB', 'Gene', (201, 205)) ('mutations', 'Var', (211, 220)) ('PPGL', 'Disease', (394, 398)) ('SDHB', 'Gene', '6390', (381, 385)) ('PPGL', 'Disease', 'MESH:D010235', (112, 116)) ('SDHB', 'Gene', (381, 385)) 17855 30589099 The absolute risks of a "clinical PPGL" in the paediatric age group are estimated to exceed 1% and 5% at ages 10 years and 16 years in SDHB mutation carriers and ages 16 and 18 years in SDHD carriers, respectively.65 Reviewing those paediatric index cases with SDHx variants reported in the literature, 9.5% (10/105) of cases presented before the age of 10 years and 70% of those cases were SDHB gene mutation carriers. ('SDH', 'Gene', '6390', (261, 264)) ('SDHD', 'Gene', (186, 190)) ('SDHD', 'Gene', '6392', (186, 190)) ('SDHB', 'Gene', '6390', (135, 139)) ('PPGL', 'Disease', 'MESH:D010235', (34, 38)) ('SDH', 'Gene', (391, 394)) ('SDHB', 'Gene', (135, 139)) ('SDH', 'Gene', (261, 264)) ('PPGL', 'Disease', (34, 38)) ('SDH', 'Gene', '6390', (135, 138)) ('SDHB', 'Gene', (391, 395)) ('SDH', 'Gene', '6390', (186, 189)) ('variants', 'Var', (266, 274)) ('SDHB', 'Gene', '6390', (391, 395)) ('SDH', 'Gene', (135, 138)) ('SDH', 'Gene', '6390', (391, 394)) ('SDH', 'Gene', (186, 189)) 17857 30589099 Importantly, this data would suggest that the approach to clinical surveillance should be tailored to the SDHx subunit gene affected, as recent studies would suggest a higher risk of PPGL (and possibly of synchronous and multifocal tumours) with SDHB gene mutations. ('PPGL', 'Disease', 'MESH:D010235', (183, 187)) ('SDHB', 'Gene', '6390', (246, 250)) ('synchronous and multifocal tumours', 'Disease', 'MESH:D009378', (205, 239)) ('SDH', 'Gene', (106, 109)) ('SDH', 'Gene', '6390', (246, 249)) ('PPGL', 'Disease', (183, 187)) ('SDHB', 'Gene', (246, 250)) ('mutations', 'Var', (256, 265)) ('SDH', 'Gene', (246, 249)) ('tumour', 'Phenotype', 'HP:0002664', (232, 238)) ('tumours', 'Phenotype', 'HP:0002664', (232, 239)) ('SDH', 'Gene', '6390', (106, 109)) 17858 30589099 Based on the available data reviewed herein both for asymptomatic SDHx carriers and index cases, we propose that for SDHB mutation carriers annual physical examination (with blood pressure) and biochemical screening should generally commence at the age of 5 years and at age 10 years for SDHA, SDHC and SDHD carriers. ('SDH', 'Gene', '6390', (303, 306)) ('SDHA', 'Gene', '6389', (288, 292)) ('SDH', 'Gene', (66, 69)) ('SDH', 'Gene', '6390', (294, 297)) ('SDHB', 'Gene', '6390', (117, 121)) ('SDHD', 'Gene', (303, 307)) ('SDH', 'Gene', (288, 291)) ('SDHC', 'Gene', '6391', (294, 298)) ('mutation', 'Var', (122, 130)) ('SDH', 'Gene', (303, 306)) ('SDHB', 'Gene', (117, 121)) ('SDH', 'Gene', '6390', (117, 120)) ('SDH', 'Gene', (294, 297)) ('SDHC', 'Gene', (294, 298)) ('SDHD', 'Gene', '6392', (303, 307)) ('SDH', 'Gene', '6390', (66, 69)) ('SDH', 'Gene', '6390', (288, 291)) ('SDHA', 'Gene', (288, 292)) ('SDH', 'Gene', (117, 120)) 17862 30589099 Finally, this clinical review has highlighted the need for a large prospective multicentre study to better inform existing surveillance and management strategies for paediatric and adolescent SDHx mutation carriers. ('SDH', 'Gene', (192, 195)) ('mutation', 'Var', (197, 205)) ('SDH', 'Gene', '6390', (192, 195)) 17989 29041921 Her medical history included dyspnea on exertion and persistent hypertension(150-160/90-100 mmHg).Her serum adrenaline, noradrenaline and dopamine levels were 0.617 pmol/ml(normal,0.05-1.39 pmol/ml),97.417 pmol/ml(normal,0.51-3.62 pmol/ml)and0.046 pmol/ml(normal,0.07-0.68 pmol/ml). ('adrenaline', 'Chemical', 'MESH:D004837', (123, 133)) ('noradrenaline', 'Chemical', 'MESH:D009638', (120, 133)) ('dopamine', 'Chemical', 'MESH:D004298', (138, 146)) ('hypertension', 'Disease', (64, 76)) ('serum adrenaline', 'MPA', (102, 118)) ('hypertension', 'Phenotype', 'HP:0000822', (64, 76)) ('dyspnea', 'Disease', (29, 36)) ('dyspnea', 'Disease', 'MESH:D004417', (29, 36)) ('adrenaline', 'Chemical', 'MESH:D004837', (108, 118)) ('0.617', 'Var', (159, 164)) ('hypertension', 'Disease', 'MESH:D006973', (64, 76)) ('dyspnea', 'Phenotype', 'HP:0002094', (29, 36)) 18196 20066070 This patient also had coexistent Pentalogy of Fallots along with transposition of pulmonary trunk to the left ventricle, a very rare congenital cyanotic heart disease. ('patient', 'Species', '9606', (5, 12)) ('transposition', 'Var', (65, 78)) ('Pentalogy of Fallot', 'Phenotype', 'HP:0001636', (33, 52)) ('Pentalogy of Fallots', 'Disease', (33, 53)) ('congenital cyanotic heart disease', 'Disease', (133, 166)) ('Pentalogy of Fallots', 'Phenotype', 'HP:0001636', (33, 53)) ('congenital cyanotic heart disease', 'Disease', 'MESH:D006331', (133, 166)) 18235 20066070 The presence of paraganglioma worsens the hemodynamic state in patients with congenital heart disease regardless of whether radical surgery for congenital heart disease had been performed. ('congenital heart disease', 'Disease', (144, 168)) ('paraganglioma', 'Disease', (16, 29)) ('congenital heart disease', 'Phenotype', 'HP:0001627', (144, 168)) ('worsens', 'NegReg', (30, 37)) ('congenital heart disease', 'Disease', (77, 101)) ('congenital heart disease', 'Disease', 'MESH:D006331', (144, 168)) ('paraganglioma', 'Disease', 'MESH:D010235', (16, 29)) ('congenital heart', 'Phenotype', 'HP:0001627', (77, 93)) ('patients', 'Species', '9606', (63, 71)) ('congenital heart disease', 'Phenotype', 'HP:0001627', (77, 101)) ('presence', 'Var', (4, 12)) ('congenital heart disease', 'Disease', 'MESH:D006331', (77, 101)) ('paraganglioma', 'Phenotype', 'HP:0002668', (16, 29)) ('congenital heart', 'Phenotype', 'HP:0001627', (144, 160)) ('hemodynamic state', 'MPA', (42, 59)) 18236 20066070 In conclusion, we report a very rare and unusual case of cardiac paraganglioma associated with Pentalogy of Fallot and transposition of pulmonary trunk to the left ventricle. ('cardiac paraganglioma', 'Disease', 'MESH:D010235', (57, 78)) ('associated', 'Reg', (79, 89)) ('Pentalogy of Fallot', 'Phenotype', 'HP:0001636', (95, 114)) ('paraganglioma', 'Phenotype', 'HP:0002668', (65, 78)) ('Pentalogy of Fallot', 'Disease', (95, 114)) ('Fallot and transposition', 'Phenotype', 'HP:0011540', (108, 132)) ('cardiac paraganglioma', 'Disease', (57, 78)) ('transposition', 'Var', (119, 132)) 18238 20066070 The presence of both the pathologies together worsen the patients condition and turned out to be fatal in some cases as in this case. ('presence', 'Var', (4, 12)) ('worsen', 'PosReg', (46, 52)) ('patients', 'Species', '9606', (57, 65)) 18245 32256452 Hypersecreted catecholamines may result in myocardial injury via its direct toxic effect on cardiomyocytes or mediating vasoconstriction which will reduce coronary blood flow in this special setting. ('myocardial injury', 'Disease', 'MESH:D009202', (43, 60)) ('coronary blood flow', 'MPA', (155, 174)) ('result in', 'Reg', (33, 42)) ('myocardial injury', 'Disease', (43, 60)) ('reduce', 'NegReg', (148, 154)) ('Hypersecreted', 'Var', (0, 13)) ('catecholamines', 'Chemical', 'MESH:D002395', (14, 28)) 18273 32256452 He underwent thrombophilia screening studies (including antiphospholipid antibodies, protein S or C deficiency, factor V Leiden mutation, prothrombin gene mutation, antithrombin III deficiency, and elevated factor VIII), without any positive results. ('factor V Leiden', 'Gene', '2153', (112, 127)) ('thrombophilia', 'Disease', 'MESH:D019851', (13, 26)) ('antiphospholipid', 'Reg', (56, 72)) ('III deficiency', 'Disease', 'MESH:C537189', (178, 192)) ('protein S or C deficiency', 'Disease', (85, 110)) ('thrombophilia', 'Disease', (13, 26)) ('prothrombin', 'Gene', (138, 149)) ('antiphospholipid antibodies', 'Phenotype', 'HP:0003613', (56, 83)) ('prothrombin', 'Gene', '2147', (138, 149)) ('elevated factor VIII', 'Phenotype', 'HP:0030977', (198, 218)) ('antithrombin III deficiency', 'Phenotype', 'HP:0001976', (165, 192)) ('protein S or C deficiency', 'Disease', 'MESH:D018455', (85, 110)) ('factor V Leiden', 'Gene', (112, 127)) ('mutation', 'Var', (128, 136)) ('III deficiency', 'Disease', (178, 192)) ('thrombophilia', 'Phenotype', 'HP:0100724', (13, 26)) 18289 32256452 Third, the coronary slow flow, possibly caused by microvascular dysfunction following vasospasm due to aberrant catecholamines secretion, may also participate in this pathologic process. ('catecholamines', 'Chemical', 'MESH:D002395', (112, 126)) ('vasospasm', 'Disease', 'MESH:D020301', (86, 95)) ('aberrant', 'Var', (103, 111)) ('vasospasm', 'Phenotype', 'HP:0025637', (86, 95)) ('aberrant catecholamines', 'Phenotype', 'HP:0012099', (103, 126)) ('microvascular dysfunction', 'Disease', 'MESH:D017566', (50, 75)) ('vasospasm', 'Disease', (86, 95)) ('microvascular dysfunction', 'Disease', (50, 75)) ('participate', 'Reg', (147, 158)) ('coronary', 'Disease', (11, 19)) 18312 32190664 PPGL with pathological invasion of the local blood vessels, lymph node and fatty infiltration, or tumor necrosis was regarded as potentially malignant. ('fatty infiltration', 'Disease', 'MESH:D008067', (75, 93)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('tumor necrosis', 'Disease', 'MESH:D009336', (98, 112)) ('PPGL', 'Var', (0, 4)) ('fatty infiltration', 'Disease', (75, 93)) ('tumor necrosis', 'Disease', (98, 112)) 18319 32190664 Furthermore, in the reported literature, up to 50% of patients with metastatic PPGLs carry hereditary germline mutations, mainly in the SDHB gene. ('mutations', 'Var', (111, 120)) ('SDHB', 'Gene', '6390', (136, 140)) ('metastatic PPGLs', 'Disease', (68, 84)) ('SDHB', 'Gene', (136, 140)) ('PGLs', 'Phenotype', 'HP:0002668', (80, 84)) 18332 31035382 Impact of Extrinsic and Intrinsic Hypoxia on Catecholamine Biosynthesis in Absence or Presence of Hif2alpha in Pheochromocytoma Cells Pheochromocytomas and paragangliomas (PPGLs) with activated pseudohypoxic pathways are associated with an immature catecholamine phenotype and carry a higher risk for metastasis. ('Pheochromocytoma', 'Disease', (134, 150)) ('Catecholamine Biosynthesis', 'MPA', (45, 71)) ('metastasis', 'CPA', (301, 311)) ('Hypoxia', 'Disease', 'MESH:D000860', (34, 41)) ('Hypoxia', 'Disease', (34, 41)) ('catecholamine', 'Chemical', 'MESH:D002395', (249, 262)) ('Presence', 'Var', (86, 94)) ('Catecholamine', 'Chemical', 'MESH:D002395', (45, 58)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (111, 127)) ('immature catecholamine phenotype', 'MPA', (240, 272)) ('Pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (134, 170)) ('paragangliomas', 'Phenotype', 'HP:0002668', (156, 170)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (134, 150)) ('Hif2alpha', 'Gene', '29452', (98, 107)) ('Pheochromocytoma', 'Disease', (111, 127)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (111, 127)) ('PPGLs', 'Chemical', '-', (172, 177)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (134, 151)) ('Hif2alpha', 'Gene', (98, 107)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (134, 150)) 18333 31035382 For improved understanding of the underlying mechanisms we investigated the impact of hypoxia and pseudohypoxia on catecholamine biosynthesis in pheochromocytoma cells naturally lacking Hif2alpha (MPC and MTT) or expressing both Hif1alpha and Hif2alpha (PC12). ('lacking', 'NegReg', (178, 185)) ('pheochromocytoma', 'Disease', (145, 161)) ('Hif2alpha', 'Protein', (186, 195)) ('Hif1alpha', 'Gene', (229, 238)) ('Hif1alpha', 'Gene', '29560', (229, 238)) ('pseudohypoxia', 'Disease', (98, 111)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (145, 161)) ('PC12', 'CellLine', 'CVCL:0481', (254, 258)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (145, 161)) ('catecholamine', 'Chemical', 'MESH:D002395', (115, 128)) ('Hif2alpha', 'Var', (243, 252)) ('hypoxia', 'Disease', (86, 93)) ('hypoxia', 'Disease', 'MESH:D000860', (86, 93)) ('hypoxia', 'Disease', (104, 111)) ('catecholamine biosynthesis', 'MPA', (115, 141)) ('hypoxia', 'Disease', 'MESH:D000860', (104, 111)) ('pseudohypoxia', 'Disease', 'None', (98, 111)) ('MTT', 'Chemical', 'MESH:C070243', (205, 208)) 18338 31035382 A specific knockdown of Hif1alpha in PC12 diminished these effects. ('PC12', 'CellLine', 'CVCL:0481', (37, 41)) ('diminished', 'NegReg', (42, 52)) ('Hif1alpha', 'Gene', '29560', (24, 33)) ('knockdown', 'Var', (11, 20)) ('Hif1alpha', 'Gene', (24, 33)) 18343 31035382 PPGLs with activated pseudohypoxic pathways (cluster 1), including those with mutations in genes encoding hypoxia-inducible factor (HIF) 2alpha (also known as EPAS1), von Hippel-Lindau tumor suppressor (VHL), prolyl hydroxylase domain (PHD), fumarate hydratase, and succinate dehydrogenase subunits (SDHx) are characterized by an immature catecholamine phenotype and higher risk of metastasis particularly prevalent in SDHx-mutated tumors. ('VHL', 'Gene', '24874', (203, 206)) ('prevalent', 'Reg', (406, 415)) ('tumors', 'Disease', 'MESH:D009369', (432, 438)) ('SDHx', 'Chemical', '-', (419, 423)) ('SDHx', 'Chemical', '-', (300, 304)) ('fumarate hydratase', 'Gene', (242, 260)) ('catecholamine', 'Chemical', 'MESH:D002395', (339, 352)) ('PPGLs', 'Chemical', '-', (0, 5)) ('mutations', 'Var', (78, 87)) ('von Hippel-Lindau tumor', 'Disease', 'MESH:D006623', (167, 190)) ('VHL', 'Gene', (203, 206)) ('activated', 'PosReg', (11, 20)) ('tumors', 'Phenotype', 'HP:0002664', (432, 438)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('PHD', 'Disease', (236, 239)) ('fumarate hydratase', 'Gene', '24368', (242, 260)) ('tumor', 'Phenotype', 'HP:0002664', (432, 437)) ('tumors', 'Disease', (432, 438)) ('hypoxia-inducible factor (HIF) 2alpha', 'Gene', '29452', (106, 143)) ('PHD', 'Disease', 'MESH:D011547', (236, 239)) ('von Hippel-Lindau tumor', 'Disease', (167, 190)) 18344 31035382 In contrast, PPGLs with genetic alterations associated with activated kinase signaling pathways (cluster 2) are mostly benign and show a mature catecholamine phenotype with strong expression of phenylethanolamine N-methyltransferase (PNMT), the enzyme that converts norepinephrine (NEpi) to epinephrine (Epi). ('genetic alterations', 'Var', (24, 43)) ('epinephrine', 'Chemical', 'MESH:D004837', (291, 302)) ('norepinephrine', 'Chemical', 'MESH:D009638', (266, 280)) ('NEpi', 'Chemical', 'MESH:D009638', (282, 286)) ('rat', 'Species', '10116', (36, 39)) ('PPGLs', 'Chemical', '-', (13, 18)) ('phenylethanolamine N-methyltransferase', 'Gene', '24661', (194, 232)) ('phenylethanolamine N-methyltransferase', 'Gene', (194, 232)) ('PNMT', 'Gene', '24661', (234, 238)) ('epinephrine', 'Chemical', 'MESH:D004837', (269, 280)) ('PNMT', 'Gene', (234, 238)) ('catecholamine', 'Chemical', 'MESH:D002395', (144, 157)) 18354 31035382 A specific knockdown of Hif2alpha by RNA interference had no effect on Th mRNA expression in a rat adrenomedullary chromaffin cell line; in contrast, an influence on DOPA decarboxylase (Ddc), the enzyme responsible for conversion of L-DOPA to dopamine (DA), was established by changes in mRNA expression. ('DOPA decarboxylase', 'Gene', (166, 184)) ('DA', 'Chemical', 'MESH:D004298', (253, 255)) ('DOPA decarboxylase', 'Gene', '24311', (166, 184)) ('Hif2alpha', 'Gene', (24, 33)) ('L-DOPA', 'Chemical', 'MESH:D007980', (233, 239)) ('Th', 'Chemical', 'MESH:D013910', (71, 73)) ('Ddc', 'Gene', '24311', (186, 189)) ('rat', 'Species', '10116', (95, 98)) ('RNA interference', 'MPA', (37, 53)) ('changes', 'Reg', (277, 284)) ('chromaffin', 'Chemical', '-', (115, 125)) ('dopamine', 'Chemical', 'MESH:D004298', (243, 251)) ('Ddc', 'Gene', (186, 189)) ('knockdown', 'Var', (11, 20)) 18376 31035382 Furthermore, alterations in hypoxia-associated genes in pseudohypoxic cluster 1 PPGLs are associated with an immature catecholamine phenotype. ('PPGLs', 'Gene', (80, 85)) ('immature catecholamine phenotype', 'MPA', (109, 141)) ('rat', 'Species', '10116', (17, 20)) ('associated', 'Reg', (90, 100)) ('catecholamine', 'Chemical', 'MESH:D002395', (118, 131)) ('hypoxia', 'Disease', (28, 35)) ('hypoxia', 'Disease', 'MESH:D000860', (28, 35)) ('alterations', 'Var', (13, 24)) ('PPGLs', 'Chemical', '-', (80, 85)) 18389 31035382 To clarify whether Hif1alpha or Hif2alpha drives the induction of catecholamine biosynthesis under extrinsic hypoxia, we analyzed cellular catecholamines of the rat PC12 cell line expressing both Hif1alpha and Hif2alpha. ('rat PC12', 'CellLine', 'CVCL:4695', (161, 169)) ('catecholamines', 'Chemical', 'MESH:D002395', (139, 153)) ('hypoxia', 'Disease', (109, 116)) ('Hif1alpha', 'Gene', '29560', (196, 205)) ('hypoxia', 'Disease', 'MESH:D000860', (109, 116)) ('Hif1alpha', 'Gene', (19, 28)) ('catecholamine', 'Chemical', 'MESH:D002395', (66, 79)) ('Hif1alpha', 'Gene', '29560', (19, 28)) ('catecholamine', 'Chemical', 'MESH:D002395', (139, 152)) ('Hif1alpha', 'Gene', (196, 205)) ('Hif2alpha', 'Var', (210, 219)) 18397 31035382 No differences in cellular DA and NEpi content between MTT H2A cells and MTT control cells were observed. ('NEpi', 'Chemical', 'MESH:D009638', (34, 38)) ('cellular DA', 'CPA', (18, 29)) ('MTT', 'Var', (55, 58)) ('DA', 'Chemical', 'MESH:D004298', (27, 29)) ('MTT', 'Chemical', 'MESH:C070243', (55, 58)) ('MTT', 'Chemical', 'MESH:C070243', (73, 76)) 18402 31035382 In the presence of Hif2alpha (pseudohypoxia), the exposure to extrinsic hypoxia only had a negligible effect on the TH phosphorylation. ('hypoxia', 'Disease', 'MESH:D000860', (36, 43)) ('Hif2alpha', 'Var', (19, 28)) ('hypoxia', 'Disease', (36, 43)) ('TH', 'Gene', '25085', (116, 118)) ('pseudohypoxia', 'Disease', (30, 43)) ('hypoxia', 'Disease', (72, 79)) ('hypoxia', 'Disease', 'MESH:D000860', (72, 79)) ('pseudohypoxia', 'Disease', 'None', (30, 43)) 18410 31035382 A stable knockdown efficiency of 42.1 +- 5.7% was achieved over at least 72 h, also under extrinsic hypoxia (Figure 5B,C). ('hypoxia', 'Disease', (100, 107)) ('hypoxia', 'Disease', 'MESH:D000860', (100, 107)) ('knockdown', 'Var', (9, 18)) 18412 31035382 Specific knockdown of Hif1alpha reduced hypoxia-induced DA content of PC12 cells significantly (Figure 5C). ('hypoxia', 'Disease', (40, 47)) ('hypoxia', 'Disease', 'MESH:D000860', (40, 47)) ('knockdown', 'Var', (9, 18)) ('DA', 'Chemical', 'MESH:D004298', (56, 58)) ('reduced', 'NegReg', (32, 39)) ('Hif1alpha', 'Gene', (22, 31)) ('Hif1alpha', 'Gene', '29560', (22, 31)) ('PC12', 'CellLine', 'CVCL:0481', (70, 74)) 18413 31035382 Moreover, specific knockdown of Hif1alpha led to reduced phosphorylation of TH at Ser40, while the total TH protein amount remained unaffected (Figure 5D). ('Ser40', 'Chemical', '-', (82, 87)) ('TH', 'Gene', '25085', (76, 78)) ('reduced', 'NegReg', (49, 56)) ('knockdown', 'Var', (19, 28)) ('Hif1alpha', 'Gene', (32, 41)) ('Hif1alpha', 'Gene', '29560', (32, 41)) ('TH', 'Gene', '25085', (105, 107)) ('phosphorylation', 'MPA', (57, 72)) 18418 31035382 Similar to other pseudohypoxic cluster 1 (5 VHL, 4 SDHB, 3 SDHD) PPGLs, tumors with a somatic gain-of-function mutation in EPAS1/HIF2alpha (n = 3) showed an increased expression of HIF2alpha compared to cluster 2 tumors (4 NF1, 6 MEN2), confirming previous results in the present cohort (Figure 6A,C). ('NF1, 6 MEN2', 'Gene', '24592', (223, 234)) ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('tumors', 'Phenotype', 'HP:0002664', (213, 219)) ('SDHB', 'Gene', '67680', (51, 55)) ('tumors', 'Disease', (72, 78)) ('SDHD', 'Disease', 'None', (59, 63)) ('PPGLs', 'Chemical', '-', (65, 70)) ('tumor', 'Phenotype', 'HP:0002664', (213, 218)) ('expression', 'MPA', (167, 177)) ('gain-of-function', 'PosReg', (94, 110)) ('tumors', 'Disease', (213, 219)) ('VHL', 'Gene', (44, 47)) ('cluster 2 tumors', 'Disease', 'MESH:D003027', (203, 219)) ('tumors', 'Disease', 'MESH:D009369', (72, 78)) ('tumors', 'Disease', 'MESH:D009369', (213, 219)) ('HIF2alpha', 'Protein', (181, 190)) ('mutation', 'Var', (111, 119)) ('SDHB', 'Gene', (51, 55)) ('SDHD', 'Disease', (59, 63)) ('EPAS1/HIF2alpha', 'Gene', (123, 138)) ('tumors', 'Phenotype', 'HP:0002664', (72, 78)) ('increased', 'PosReg', (157, 166)) ('VHL', 'Gene', '24874', (44, 47)) ('cluster 2 tumors', 'Disease', (203, 219)) 18420 31035382 The three patients with EPAS1/HIF2alpha mutation consistently showed a doubling of NEpi in comparison to other cluster 1 tumors (Figure 6B). ('mutation', 'Var', (40, 48)) ('NEpi', 'Chemical', 'MESH:D009638', (83, 87)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('tumors', 'Disease', (121, 127)) ('tumors', 'Phenotype', 'HP:0002664', (121, 127)) ('EPAS1/HIF2alpha', 'Gene', (24, 39)) ('NEpi', 'MPA', (83, 87)) ('tumors', 'Disease', 'MESH:D009369', (121, 127)) ('patients', 'Species', '9606', (10, 18)) ('Th', 'Chemical', 'MESH:D013910', (0, 2)) ('doubling', 'PosReg', (71, 79)) 18435 31035382 Different protein kinases and protein phosphatases mediate the phosphorylation of TH at serine residues Ser8, Ser19, Ser31 and Ser40. ('Ser31', 'Var', (117, 122)) ('Ser8', 'Var', (104, 108)) ('protein', 'Enzyme', (10, 17)) ('Ser40', 'Chemical', '-', (127, 132)) ('Ser31', 'Chemical', '-', (117, 122)) ('Ser19', 'Chemical', '-', (110, 115)) ('TH', 'Gene', '25085', (82, 84)) ('phosphorylation', 'MPA', (63, 78)) ('Ser40', 'Var', (127, 132)) ('Ser19', 'Var', (110, 115)) ('serine', 'Chemical', 'MESH:D012694', (88, 94)) ('Ser8', 'Chemical', '-', (104, 108)) ('protein phosphatases', 'Enzyme', (30, 50)) 18436 31035382 TH activity is nevertheless predominantly dependent on the phosphorylation at Ser40; phosphorylation at Ser31 also enhances TH activity but to a much lesser extent than for Ser40, and phosphorylation at Ser19 or Ser8 has no effect on the enzyme activity. ('TH', 'Gene', '25085', (124, 126)) ('Ser31', 'Chemical', '-', (104, 109)) ('phosphorylation', 'Var', (85, 100)) ('Ser8', 'Chemical', '-', (212, 216)) ('Ser40', 'Chemical', '-', (173, 178)) ('TH', 'Gene', '25085', (0, 2)) ('Ser19', 'Chemical', '-', (203, 208)) ('Ser40', 'Chemical', '-', (78, 83)) ('enhances', 'PosReg', (115, 123)) 18437 31035382 Protein kinase (PK) A, PKG, and PKC are primarily responsible for the phosphorylation of Ser40, whereas dephosphorylation is regulated by protein phosphatase 2A and 2C. ('PK', 'Gene', '64030', (16, 18)) ('responsible', 'Reg', (50, 61)) ('PK', 'Gene', '64030', (23, 25)) ('Ser40', 'Chemical', '-', (89, 94)) ('dephosphorylation', 'MPA', (104, 121)) ('Ser40', 'Var', (89, 94)) ('phosphorylation', 'MPA', (70, 85)) ('PKC', 'Gene', (32, 35)) ('Protein kinase', 'Gene', '64030', (0, 14)) ('Protein kinase', 'Gene', (0, 14)) ('PKC', 'Gene', '5580', (32, 35)) ('PK', 'Gene', '64030', (32, 34)) 18446 31035382 The three tumors bearing a mutation in EPAS1/HIF2alpha consistently showed a doubling of NEpi in comparison to other cluster 1 PPGLs. ('NEpi', 'Chemical', 'MESH:D009638', (89, 93)) ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('EPAS1/HIF2alpha', 'Gene', (39, 54)) ('NEpi', 'MPA', (89, 93)) ('tumors', 'Disease', (10, 16)) ('tumors', 'Disease', 'MESH:D009369', (10, 16)) ('tumors', 'Phenotype', 'HP:0002664', (10, 16)) ('mutation', 'Var', (27, 35)) ('PPGLs', 'Chemical', '-', (127, 132)) ('Th', 'Chemical', 'MESH:D013910', (0, 2)) ('doubling', 'PosReg', (77, 85)) 18450 31035382 Furthermore, expression of Hif2alpha in MPC-mCherry cells enhanced hypoxia-stimulated expression of Ddc (Figure 4). ('Hif2alpha', 'Protein', (27, 36)) ('hypoxia', 'Disease', (67, 74)) ('hypoxia', 'Disease', 'MESH:D000860', (67, 74)) ('enhanced', 'PosReg', (58, 66)) ('Ddc', 'Gene', (100, 103)) ('expression', 'Var', (13, 23)) ('Ddc', 'Gene', '24311', (100, 103)) 18452 31035382 This could be responsible for the enhanced Ddc expression in presence of Hif1alpha and Hif2alpha. ('Hif1alpha', 'Gene', (73, 82)) ('Hif1alpha', 'Gene', '29560', (73, 82)) ('enhanced', 'PosReg', (34, 42)) ('Ddc', 'Gene', '24311', (43, 46)) ('Th', 'Chemical', 'MESH:D013910', (0, 2)) ('Hif2alpha', 'Var', (87, 96)) ('Ddc', 'Gene', (43, 46)) 18453 31035382 The present study allows for the first time a differentiation between HIF1alpha- and HIF2alpha-driven effects on the catecholamine biosynthesis under hypoxic conditions (Figure 7). ('hypoxic conditions', 'Disease', 'MESH:D009135', (150, 168)) ('catecholamine', 'Chemical', 'MESH:D002395', (117, 130)) ('HIF2alpha-driven', 'Var', (85, 101)) ('HIF1alpha-', 'Var', (70, 80)) ('catecholamine biosynthesis', 'MPA', (117, 143)) ('Th', 'Chemical', 'MESH:D013910', (0, 2)) ('hypoxic conditions', 'Disease', (150, 168)) 18455 31035382 A specific knockdown of Hif1alpha reduced hypoxia-induced dopamine synthesis and diminished TH phosphorylation significantly (Figure 5), while the expression of Hif2alpha had no additional effect (Figure 4). ('diminished', 'NegReg', (81, 91)) ('reduced', 'NegReg', (34, 41)) ('dopamine', 'Chemical', 'MESH:D004298', (58, 66)) ('TH', 'Gene', '25085', (92, 94)) ('hypoxia', 'Disease', (42, 49)) ('hypoxia', 'Disease', 'MESH:D000860', (42, 49)) ('Hif1alpha', 'Gene', '29560', (24, 33)) ('knockdown', 'Var', (11, 20)) ('Hif1alpha', 'Gene', (24, 33)) 18466 31035382 Targeted inhibition of HIF2alpha possibly provides an excellent therapeutic approach for advanced PPGLs and is moreover able to modulate catecholamine biosynthesis within the tumor cells. ('modulate', 'Reg', (128, 136)) ('tumor', 'Disease', (175, 180)) ('PPGLs', 'Chemical', '-', (98, 103)) ('HIF2alpha', 'Gene', (23, 32)) ('catecholamine biosynthesis', 'MPA', (137, 163)) ('Targeted inhibition', 'Var', (0, 19)) ('tumor', 'Disease', 'MESH:D009369', (175, 180)) ('PPGLs', 'Disease', (98, 103)) ('tumor', 'Phenotype', 'HP:0002664', (175, 180)) ('catecholamine', 'Chemical', 'MESH:D002395', (137, 150)) 18515 31035382 After centrifugation at 4 C, pellets were washed twice with PBS and stored at -80 C. Sixty spheroids were transferred to each Eppendorf tube, washed three times with PBS and stored at -80 C. Lysates were prepared on ice using CellLyticTM M (Sigma-Aldrich, C2978) with protease inhibitors (1:100, Sigma-Aldrich; P8340). ('P8340', 'Var', (314, 319)) ('PBS', 'Disease', 'MESH:D011535', (61, 64)) ('PBS', 'Disease', (61, 64)) ('PBS', 'Disease', 'MESH:D011535', (168, 171)) ('PBS', 'Disease', (168, 171)) ('C2978', 'CellLine', 'CVCL:9U73', (259, 264)) 18534 31035382 ; writing:original draft preparation, N.B., I.P., V.S., C.G., M.U., N.Q., A.W., M.P., M.R., K.P., J.P., S.R. ('M.P.', 'Var', (80, 84)) ('M.R.', 'Var', (86, 90)) ('rat', 'Species', '10116', (30, 33)) ('K.P.', 'Var', (92, 96)) 18566 31179416 Patients with a mutation in the B subunit of SDH, known as SDHB, are more likely to have metastatic disease. ('SDH', 'Gene', '6390', (59, 62)) ('mutation in', 'Var', (16, 27)) ('metastatic disease', 'CPA', (89, 107)) ('SDH', 'Gene', (45, 48)) ('SDH', 'Gene', (59, 62)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', '6390', (59, 63)) ('SDHB', 'Gene', (59, 63)) ('SDH', 'Gene', '6390', (45, 48)) 18569 31179416 Each syndrome is distinguished by a different mutated subunit of SDH and has a characteristic incidence of PPGLs as well as renal cell carcinomas, gastrointestinal stromal tumors, pituitary tumors, and thyroid cancers. ('SDH', 'Gene', '6390', (65, 68)) ('renal cell carcinomas', 'Disease', (124, 145)) ('cancer', 'Phenotype', 'HP:0002664', (210, 216)) ('tumor', 'Phenotype', 'HP:0002664', (190, 195)) ('mutated', 'Var', (46, 53)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (124, 145)) ('gastrointestinal stromal tumors', 'Disease', (147, 178)) ('tumors', 'Phenotype', 'HP:0002664', (172, 178)) ('carcinomas', 'Phenotype', 'HP:0030731', (135, 145)) ('thyroid cancers', 'Disease', 'MESH:D013964', (202, 217)) ('PPGLs', 'Chemical', '-', (107, 112)) ('pituitary tumors', 'Disease', 'MESH:D010911', (180, 196)) ('SDH', 'Gene', (65, 68)) ('tumors', 'Phenotype', 'HP:0002664', (190, 196)) ('tumor', 'Phenotype', 'HP:0002664', (172, 177)) ('PPGLs', 'Disease', (107, 112)) ('pituitary tumors', 'Disease', (180, 196)) ('thyroid cancers', 'Disease', (202, 217)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (147, 178)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (147, 178)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (124, 145)) ('cancers', 'Phenotype', 'HP:0002664', (210, 217)) 18576 31179416 After engaging in shared decision making, genetic testing for SDH mutations may be recommended as well. ('mutations', 'Var', (66, 75)) ('SDH', 'Gene', (62, 65)) ('SDH', 'Gene', '6390', (62, 65)) 18602 31179416 In terms of radiotherapy options, 131I-MIBG, a norepinephrine analog labeled with a radioactive isotope, can be used for both diagnosis and treatment of metastatic PPGLs. ('norepinephrine', 'Chemical', 'MESH:D009638', (47, 61)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (34, 43)) ('PPGLs', 'Chemical', '-', (164, 169)) ('metastatic PPGLs', 'Disease', (153, 169)) ('131I-MIBG', 'Var', (34, 43)) 18603 31179416 One meta-analysis of 243 patients with metastatic PPGL treated with varying doses of 131I-MIBG demonstrated 3% complete response, 27% partial responsive, and 52% stable disease. ('131I-MIBG', 'Chemical', 'MESH:D019797', (85, 94)) ('PPGL', 'Chemical', '-', (50, 54)) ('131I-MIBG', 'Var', (85, 94)) ('patients', 'Species', '9606', (25, 33)) ('partial', 'NegReg', (134, 141)) 18607 31179416 Currently, randomized control trials are underway looking at a variety of biological molecules including sunitinib (NCT01371201), as well as cabozantinib (NCT02302833), lenvatinib (NCT03008369), pembrolizumab (NCT02721732), ipilimumab/nivolumab (NCT02834013), and dovitinib (NCT01635907) for the treatment of metastatic PPGLs. ('metastatic PPGLs', 'Disease', (309, 325)) ('nivolumab', 'Chemical', 'MESH:D000077594', (235, 244)) ('NCT02834013', 'Var', (246, 257)) ('ipilimumab', 'Chemical', 'MESH:D000074324', (224, 234)) ('sunitinib', 'Chemical', 'MESH:D000077210', (105, 114)) ('NCT03008369', 'Var', (181, 192)) ('NCT01635907', 'Var', (275, 286)) ('cabozantinib', 'Chemical', 'MESH:C558660', (141, 153)) ('pembrolizumab', 'Chemical', 'MESH:C582435', (195, 208)) ('NCT02721732', 'Var', (210, 221)) ('NCT02302833', 'Var', (155, 166)) ('PPGLs', 'Chemical', '-', (320, 325)) ('dovitinib', 'Chemical', 'MESH:C500007', (264, 273)) ('NCT01371201', 'Var', (116, 127)) ('lenvatinib', 'Chemical', 'MESH:C531958', (169, 179)) 18641 30693873 In such rare circumstances, specific genetic mutations result in VHL disease or familial pheochromocytoma and RCC syndrome have been proposed. ('RCC', 'Disease', (110, 113)) ('result in', 'Reg', (55, 64)) ('RCC', 'Phenotype', 'HP:0005584', (110, 113)) ('mutations', 'Var', (45, 54)) ('VHL disease', 'Disease', (65, 76)) ('RCC', 'Disease', 'MESH:C538614', (110, 113)) ('familial pheochromocytoma', 'Disease', (80, 105)) ('VHL disease', 'Disease', 'MESH:D006623', (65, 76)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (80, 105)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (89, 105)) 18642 30693873 The negative results of VHL gene mutation and unremarkable family history in our patient make the diagnosis of these two diseases less likely. ('mutation', 'Var', (33, 41)) ('patient', 'Species', '9606', (81, 88)) ('negative', 'NegReg', (4, 12)) ('VHL', 'Disease', 'MESH:D006623', (24, 27)) ('VHL', 'Disease', (24, 27)) 18710 30631823 Once MIBG is tagged with either 123I or 131I, it can be taken up by functional paragangliomas. ('123I', 'Var', (32, 36)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('paragangliomas', 'Phenotype', 'HP:0002668', (79, 93)) ('functional paragangliomas', 'Disease', 'MESH:D010235', (68, 93)) ('MIBG', 'Chemical', 'MESH:D019797', (5, 9)) ('functional paragangliomas', 'Disease', (68, 93)) ('131I', 'Var', (40, 44)) 18748 30405919 They suggest testing for succinate dehydrogenase (SDH) mutations and that patients with metastatic disease should undergo testing for SDHB mutations. ('mutations', 'Var', (55, 64)) ('mutations', 'Var', (139, 148)) ('succinate dehydrogenase', 'Gene', '6390', (25, 48)) ('patients', 'Species', '9606', (74, 82)) ('succinate dehydrogenase', 'Gene', (25, 48)) ('testing', 'Reg', (13, 20)) ('SDHB', 'Gene', (134, 138)) ('SDH', 'Gene', (50, 53)) 18750 30405919 Multiple paragangliomas have been identified in 66.9 percent of the SDHD mutation carriers; but malignant paragangliomas are more commonly seen in SDHB mutation carriers, 37.5 percent, as opposed to 3.1 percent of the SDHD, and none of the SDHC mutation carriers. ('malignant paragangliomas', 'Disease', (96, 120)) ('Multiple paragangliomas', 'Disease', 'MESH:D010235', (0, 23)) ('paraganglioma', 'Phenotype', 'HP:0002668', (106, 119)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (96, 120)) ('SDHB', 'Gene', (147, 151)) ('paraganglioma', 'Phenotype', 'HP:0002668', (9, 22)) ('paragangliomas', 'Phenotype', 'HP:0002668', (9, 23)) ('Multiple paragangliomas', 'Disease', (0, 23)) ('mutation', 'Var', (152, 160)) ('paragangliomas', 'Phenotype', 'HP:0002668', (106, 120)) 18760 30405919 These gene mutations have been identified as part of Von Hipple Lindau syndrome, multiple endocrine neoplasia, neurofibromatosis type 1, and paragangliomas syndrome. ('mutations', 'Var', (11, 20)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (111, 128)) ('multiple endocrine neoplasia', 'Disease', (81, 109)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (90, 109)) ('identified', 'Reg', (31, 41)) ('Von Hipple Lindau syndrome', 'Disease', 'MESH:D006623', (53, 79)) ('neoplasia', 'Phenotype', 'HP:0002664', (100, 109)) ('paragangliomas syndrome', 'Disease', (141, 164)) ('Von Hipple Lindau syndrome', 'Disease', (53, 79)) ('paragangliomas', 'Phenotype', 'HP:0002668', (141, 155)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (81, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (141, 154)) ('neurofibromatosis type 1', 'Gene', '4763', (111, 135)) ('neurofibromatosis type 1', 'Gene', (111, 135)) ('paragangliomas syndrome', 'Disease', 'MESH:D010235', (141, 164)) 18761 30405919 It consisted of four female patients, one of them with synchronous PTC and PGL; 2 had heterozygous germline variants in SDHB and the four of them had -79 T>C CDKN1B gene polymorphism (3 homozygous and 1 in heterozygous state). ('PTC', 'Phenotype', 'HP:0002895', (67, 70)) ('variants', 'Var', (108, 116)) ('PGL; 2', 'Gene', (75, 81)) ('CDKN1B', 'Gene', '1027', (158, 164)) ('SDHB', 'Gene', (120, 124)) ('PGL; 2', 'Gene', '54949', (75, 81)) ('-79 T>C', 'Mutation', 'rs34330', (150, 157)) ('CDKN1B', 'Gene', (158, 164)) 18876 29623209 The initial biochemical tests of choice for PPGL in NF-1 are either plasma-free metanephrines or urinary fractionated metanephrines. ('NF-1', 'Gene', '4763', (52, 56)) ('urinary fractionated metanephrines', 'MPA', (97, 131)) ('plasma-free metanephrines', 'MPA', (68, 93)) ('PPGL', 'Var', (44, 48)) ('metanephrines', 'Chemical', 'MESH:D008676', (80, 93)) ('NF-1', 'Gene', (52, 56)) ('PGL', 'Phenotype', 'HP:0002668', (45, 48)) ('metanephrines', 'Chemical', 'MESH:D008676', (118, 131)) 18879 29623209 Meanwhile, PHPT may further exacerbate the metabolic bone defect in these patients and should be treated when present according to published guidelines. ('exacerbate', 'PosReg', (28, 38)) ('metabolic bone defect', 'Disease', 'MESH:D001851', (43, 64)) ('PHPT', 'Var', (11, 15)) ('patients', 'Species', '9606', (74, 82)) ('metabolic bone defect', 'Disease', (43, 64)) ('PHPT', 'Phenotype', 'HP:0008200', (11, 15)) 18884 29623209 Loss of neurofibromin results in hyperactivation of the RAS proto-oncogene, which is a key signalling molecule of cell growth. ('neurofibromin', 'Gene', '4763', (8, 21)) ('hyperactivation', 'PosReg', (33, 48)) ('Loss', 'Var', (0, 4)) ('neurofibromin', 'Gene', (8, 21)) ('RAS proto-oncogene', 'Gene', (56, 74)) 18885 29623209 Therefore, NF-1 is now recognized as a form of RASopathy, where dysregulated RAS-MAPK signalling pathway causes cancer predisposition. ('RAS-MAPK signalling pathway', 'Pathway', (77, 104)) ('causes', 'Reg', (105, 111)) ('NF-1', 'Gene', '4763', (11, 15)) ('cancer', 'Disease', (112, 118)) ('cancer', 'Disease', 'MESH:D009369', (112, 118)) ('RASopathy', 'Disease', (47, 56)) ('NF-1', 'Gene', (11, 15)) ('dysregulated', 'Var', (64, 76)) ('cancer', 'Phenotype', 'HP:0002664', (112, 118)) ('RASopathy', 'Disease', 'None', (47, 56)) 18955 29623209 The presence of PHPT may further exacerbate the bone diseases in these patients and when it is recognised, treatment should be considered based on the current guidelines. ('patients', 'Species', '9606', (71, 79)) ('PHPT', 'Phenotype', 'HP:0008200', (16, 20)) ('exacerbate', 'PosReg', (33, 43)) ('presence', 'Var', (4, 12)) ('bone diseases', 'Disease', (48, 61)) ('PHPT', 'Gene', (16, 20)) ('bone diseases', 'Disease', 'MESH:D001847', (48, 61)) 18971 29308445 To use the Exome Aggregation Consortium (ExAC) data set to determine the background population frequencies of rare germline coding-region variants in genes associated with hereditary endocrine disease and to evaluate the clinical utility of these data. ('hereditary endocrine disease', 'Disease', (172, 200)) ('hereditary endocrine disease', 'Disease', 'MESH:D030342', (172, 200)) ('endocrine disease', 'Phenotype', 'HP:0000818', (183, 200)) ('variants', 'Var', (138, 146)) 18973 29308445 The utility of gene-level and variant-level metrics of tolerability was assessed, and the pathogenicity and penetrance of germline variants previously associated with endocrine disease evaluated. ('associated', 'Reg', (151, 161)) ('endocrine disease', 'Phenotype', 'HP:0000818', (167, 184)) ('variants', 'Var', (131, 139)) ('endocrine disease', 'Disease', (167, 184)) ('endocrine disease', 'Disease', 'MESH:D004700', (167, 184)) 18974 29308445 Genes associated with dominant monogenic endocrine disorders typically harbored fewer rare missense and/or loss-of-function variants than expected. ('endocrine disorders', 'Disease', 'MESH:D004700', (41, 60)) ('endocrine disorders', 'Phenotype', 'HP:0000818', (41, 60)) ('loss-of-function', 'NegReg', (107, 123)) ('endocrine disorders', 'Disease', (41, 60)) ('missense', 'Var', (91, 99)) 18975 29308445 The frequency of several endocrine disease-associated variants in the ExAC cohort far exceeded estimates of disease prevalence, indicating either misclassification or overestimation of disease penetrance. ('variants', 'Var', (54, 62)) ('endocrine disease', 'Disease', 'MESH:D004700', (25, 42)) ('endocrine disease', 'Phenotype', 'HP:0000818', (25, 42)) ('endocrine disease', 'Disease', (25, 42)) 18980 29308445 The detailed genetic characterization of large population cohorts provides an unbiased resource to reevaluate the role of germline genetic variation in hereditary disease, as illustrated by results from the exome variant server and 1000 Genomes Project cohorts, which identified a surprising high degree of rare coding-region variation as well as demonstrating that many disease-associated variants reported as pathogenic were instead observed with improbably high frequencies in apparently healthy individuals, indicating likely misclassification. ('hereditary disease', 'Disease', 'MESH:D030342', (152, 170)) ('hereditary disease', 'Disease', (152, 170)) ('variation', 'Var', (326, 335)) ('variants', 'Var', (390, 398)) 18986 29308445 Indications for genetic testing include the evaluation of individuals at risk for monogenic disease [e.g., multiple endocrine neoplasia type 1 (MEN1)]; sporadic clinical presentations associated with a high prevalence of germline mutations [e.g., pheochromocytoma/paraganglioma (PPGL)]; or investigative studies for clinical presentations in which a genetic etiology is suspected. ('pheochromocytoma/paraganglioma', 'Disease', (247, 277)) ('MEN1', 'Gene', '4221', (144, 148)) ('neoplasia', 'Phenotype', 'HP:0002664', (126, 135)) ('germline mutations', 'Var', (221, 239)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (247, 277)) ('multiple endocrine neoplasia type 1', 'Gene', '4221', (107, 142)) ('paraganglioma', 'Phenotype', 'HP:0002668', (264, 277)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (116, 135)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (247, 263)) ('multiple endocrine neoplasia type 1', 'Gene', (107, 142)) ('MEN1', 'Gene', (144, 148)) 18987 29308445 Therefore, to address these challenges, we used the ExAC cohort to quantify the spectrum and frequency of rare germline missense and loss-of-function (LOF) SNVs in 38 genes associated with hereditary endocrine disease and explored the utility of these data when applied to several clinical settings. ('hereditary endocrine disease', 'Disease', 'MESH:D030342', (189, 217)) ('missense', 'Var', (120, 128)) ('loss-of-function', 'NegReg', (133, 149)) ('endocrine disease', 'Phenotype', 'HP:0000818', (200, 217)) ('SNVs', 'Var', (156, 160)) ('hereditary endocrine disease', 'Disease', (189, 217)) 18988 29308445 All high-quality nonsynonymous SNVs were identified in the 38 genes selected for study, including those predicted to result in missense or nonsense amino acid changes and those directly disrupting donor or acceptor splice sites. ('missense', 'Var', (127, 135)) ('donor', 'Species', '9606', (197, 202)) ('donor or acceptor splice sites', 'MPA', (197, 227)) ('nonsense amino acid changes', 'Var', (139, 166)) ('result', 'Reg', (117, 123)) ('disrupting', 'NegReg', (186, 196)) 18993 29308445 A separate subanalysis of only LOF SNVs was performed (i.e., single-nucleotide substitution predicting either a nonsense amino acid change or directly affecting a donor or acceptor splice site). ('nonsense amino acid', 'MPA', (112, 131)) ('affecting', 'Reg', (151, 160)) ('donor', 'Species', '9606', (163, 168)) ('single-nucleotide substitution', 'Var', (61, 91)) 18996 29308445 SIFT, Polyphen2, and Combined Annotation Dependent Depletion (CADD) scores were evaluated for all missense SNVs with an AF <0.5% in a subset of 12 genes (downloaded from http://cadd.gs.washington.edu/). ('AF', 'Disease', 'MESH:D001281', (120, 122)) ('SIFT', 'Disease', 'None', (0, 4)) ('SIFT', 'Disease', (0, 4)) ('missense', 'Var', (98, 106)) 18997 29308445 Variants were categorized as deleterious if they met all of the following criteria: AF <0.5%; SIFT score <=0.05; a Polyphen2 description of probably damaging; and a scaled CADD score >20. ('Variants', 'Var', (0, 8)) ('SIFT', 'Disease', 'None', (94, 98)) ('AF', 'Disease', 'MESH:D001281', (84, 86)) ('SIFT', 'Disease', (94, 98)) 18998 29308445 Variants were considered possibly deleterious when they had an AF <0.5% and either a SIFT score <=0.05 and/or a Polyphen2 classification of probably damaging or possibly damaging. ('SIFT', 'Disease', 'None', (85, 89)) ('SIFT', 'Disease', (85, 89)) ('Variants', 'Var', (0, 8)) ('AF', 'Disease', 'MESH:D001281', (63, 65)) 19000 29308445 In a separate analysis, the ExAC data set was screened for actionable variants in MEN1, RET, VHL, SDHB, SDHC, SDHD, and SDHAF2 (as recommended by the American College of Medical Genetics and Genomics (ACMG) guidelines). ('RET', 'Gene', (88, 91)) ('SDHC', 'Gene', (104, 108)) ('SDHB', 'Gene', '6390', (98, 102)) ('MEN1', 'Gene', (82, 86)) ('SDHB', 'Gene', (98, 102)) ('variants', 'Var', (70, 78)) ('SDHAF2', 'Gene', (120, 126)) ('VHL', 'Disease', 'MESH:D006623', (93, 96)) ('RET', 'Gene', '5979', (88, 91)) ('VHL', 'Disease', (93, 96)) ('SDHD', 'Gene', '6392', (110, 114)) ('SDHC', 'Gene', '6391', (104, 108)) ('SDHAF2', 'Gene', '54949', (120, 126)) ('SDHD', 'Gene', (110, 114)) ('MEN1', 'Gene', '4221', (82, 86)) 19001 29308445 Individual and cumulative frequencies of all missense AIP SNVs with an AF <0.5% were established for the ExAC cohort and compared with those observed in 1866 individuals with apparently sporadic pituitary tumors reported in nine earlier studies. ('missense', 'Var', (45, 53)) ('AIP', 'Gene', '9049', (54, 57)) ('pituitary tumors', 'Disease', (195, 211)) ('AIP', 'Gene', (54, 57)) ('tumor', 'Phenotype', 'HP:0002664', (205, 210)) ('tumors', 'Phenotype', 'HP:0002664', (205, 211)) ('AF', 'Disease', 'MESH:D001281', (71, 73)) ('pituitary tumors', 'Disease', 'MESH:D010911', (195, 211)) 19003 29308445 Thirty-eight genes were selected for study, representing a range of endocrine disorders reported to be associated with heterozygous germline missense and/or LOF SNVs (Table 1). ('endocrine disorders', 'Phenotype', 'HP:0000818', (68, 87)) ('SNVs', 'Disease', (161, 165)) ('endocrine disorders', 'Disease', (68, 87)) ('germline', 'Var', (132, 140)) ('endocrine disorders', 'Disease', 'MESH:D004700', (68, 87)) ('LOF', 'NegReg', (157, 160)) 19004 29308445 The identification of all nonsynonymous SNVs (i.e., single-nucleotide substitutions resulting in missense or nonsense amino acid changes or directly affecting donor or acceptor splice sites) in each of the 38 genes revealed that the overwhelming majority were rare, with ~60% occurring as singletons (i.e., observed only once in the ExAC cohort), whereas ~92% of gene-specific SNVs had an AF <0.05% (i.e., observed in <=1 in 1000 individuals) (Fig. ('donor', 'Species', '9606', (159, 164)) ('nonsense amino acid', 'MPA', (109, 128)) ('missense', 'Var', (97, 105)) ('AF', 'Disease', 'MESH:D001281', (389, 391)) ('single-nucleotide substitutions', 'Var', (52, 83)) ('affecting', 'Reg', (149, 158)) 19005 29308445 For example, chromodomain helicase DNA-binding protein 7 (CHD7) and neurofibromin (NF1) demonstrated the highest frequencies of singleton variants (affecting approximately one in 100 and approximately one in 200 of the cohort, respectively), whereas the lowest frequency was observed for adaptor-related protein complex 2 sigma 1 subunit (AP2S1) (affecting approximately one in 12,000 individuals). ('NF1', 'Gene', '4763', (83, 86)) ('AP2S1', 'Gene', (339, 344)) ('chromodomain helicase DNA-binding protein 7', 'Gene', '55636', (13, 56)) ('CHD7', 'Gene', (58, 62)) ('CHD7', 'Gene', '55636', (58, 62)) ('variants', 'Var', (138, 146)) ('neurofibromin', 'Gene', (68, 81)) ('adaptor-related protein complex 2 sigma 1 subunit', 'Gene', (288, 337)) ('adaptor-related protein complex 2 sigma 1 subunit', 'Gene', '1175', (288, 337)) ('AP2S1', 'Gene', '1175', (339, 344)) ('chromodomain helicase DNA-binding protein 7', 'Gene', (13, 56)) ('NF1', 'Gene', (83, 86)) ('neurofibromin', 'Gene', '4763', (68, 81)) 19008 29308445 To further investigate gene-level differences in rare variant frequency, we evaluated the utility of recently reported metrics of constraint, which aim to quantify the deviation between observed and expected numbers of rare nonsynonymous SNVs resulting in either a missense amino acid change or an LOF (i.e., nonsense or donor/acceptor splice site change) . ('missense', 'Var', (265, 273)) ('donor', 'Species', '9606', (321, 326)) ('SNVs', 'Var', (238, 242)) ('LOF', 'NegReg', (298, 301)) ('nonsense', 'Var', (309, 317)) 19010 29308445 In contrast, many disease-associated genes were categorized as missense and/or LOF tolerant, including several in which the role of heterozygous variation and endocrine disease is less established [e.g., growth hormone receptor (GHR)] or was previously associated with reduced disease penetrance [e.g., succinate dehydrogenase A (SDHA), succinate dehydrogenase B (SDHB)]. ('endocrine disease', 'Phenotype', 'HP:0000818', (159, 176)) ('succinate dehydrogenase A', 'Gene', '6389', (303, 328)) ('missense', 'Var', (63, 71)) ('growth hormone receptor', 'Gene', (204, 227)) ('succinate dehydrogenase A', 'Gene', (303, 328)) ('SDHA', 'Gene', (330, 334)) ('growth hormone receptor', 'Gene', '2690', (204, 227)) ('endocrine disease', 'Disease', (159, 176)) ('succinate dehydrogenase B', 'Gene', (337, 362)) ('succinate dehydrogenase B', 'Gene', '6390', (337, 362)) ('endocrine disease', 'Disease', 'MESH:D004700', (159, 176)) ('GHR', 'Gene', (229, 232)) ('SDHB', 'Gene', '6390', (364, 368)) ('GHR', 'Gene', '2690', (229, 232)) ('SDHA', 'Gene', '6389', (330, 334)) ('SDHB', 'Gene', (364, 368)) ('LOF', 'NegReg', (79, 82)) 19013 29308445 Although many genes displayed an absence or very low number of LOF SNV alleles consistent with their known haploinsufficiency function (e.g., MEN1, CDC73), some genes harbored cumulative LOF SNV frequencies considerably higher than the associated disease phenotype (e.g., SDHA and PPGL), indicating a reduced penetrance of such variants. ('LOF', 'NegReg', (187, 190)) ('CDC73', 'Gene', (148, 153)) ('MEN1', 'Gene', '4221', (142, 146)) ('CDC73', 'Gene', '79577', (148, 153)) ('SDHA', 'Gene', (272, 276)) ('haploinsufficiency function', 'Disease', (107, 134)) ('MEN1', 'Gene', (142, 146)) ('haploinsufficiency function', 'Disease', 'MESH:D058495', (107, 134)) ('higher', 'PosReg', (220, 226)) ('SNV', 'Var', (191, 194)) ('SDHA', 'Gene', '6389', (272, 276)) 19015 29308445 Similarly, small indels resulting in an LOF (i.e., frameshift) were absent or very rare in the majority of genes (i.e., 21 of 38 genes harboring <=1 affected individual), although higher frequencies were observed in several genes in which LOF indels would be anticipated to be disease causing, including NF1 (~1:5000 individuals), CASR (~1:15,000 individuals), SDHB (~1:30,000), and CDC73 (~1:30,000) . ('SDHB', 'Gene', '6390', (361, 365)) ('SDHB', 'Gene', (361, 365)) ('NF1', 'Gene', (304, 307)) ('CDC73', 'Gene', (383, 388)) ('LOF', 'NegReg', (239, 242)) ('CDC73', 'Gene', '79577', (383, 388)) ('indels', 'Var', (243, 249)) ('CASR', 'Gene', '846', (331, 335)) ('NF1', 'Gene', '4763', (304, 307)) ('CASR', 'Gene', (331, 335)) 19016 29308445 Computational tools are frequently used to predict the functional effects of missense SNVs on protein function and are often used as an adjunct alongside other clinical and genetic data to provide supporting evidence of variant pathogenicity (e.g., as part of the ACMG algorithm for interpretation of sequence variants). ('ret', 'Gene', '5979', (289, 292)) ('missense SNVs', 'Var', (77, 90)) ('ret', 'Gene', (289, 292)) ('protein function', 'MPA', (94, 110)) ('effects', 'Reg', (66, 73)) 19017 29308445 To assess the potential utility of such tools, we analyzed SIFT, Polyphen2, and CADD scores of all rare missense SNVs in a subset of 12 genes. ('missense SNVs', 'Var', (104, 117)) ('SIFT', 'Disease', 'None', (59, 63)) ('SIFT', 'Disease', (59, 63)) 19018 29308445 For example, ~1:2000 ExAC individuals harbored a rare MEN1 missense SNV predicted to be deleterious using all three tools, compared with the estimated population prevalence of MEN1 of 1:30,000. ('missense SNV', 'Var', (59, 71)) ('MEN1', 'Gene', (176, 180)) ('MEN1', 'Gene', '4221', (176, 180)) ('MEN1', 'Gene', (54, 58)) ('MEN1', 'Gene', '4221', (54, 58)) 19019 29308445 First, we examined the ExAC cohort for variants previously reported as disease-causing in six genes associated with penetrant monogenic disorders (i.e., FHH, MEN1 and MEN2, hyperparathyroidism-jaw tumor syndrome, NF1, and VHL). ('MEN1', 'Gene', '4221', (158, 162)) ('VHL', 'Disease', 'MESH:D006623', (222, 225)) ('FHH', 'Gene', (153, 156)) ('VHL', 'Disease', (222, 225)) ('disease-causing', 'Reg', (71, 86)) ('MEN', 'Species', '9606', (158, 161)) ('MEN', 'Species', '9606', (167, 170)) ('hyperparathyroidism-jaw tumor syndrome', 'Disease', 'MESH:C563273', (173, 211)) ('jaw tumor', 'Phenotype', 'HP:0030792', (193, 202)) ('NF1', 'Gene', (213, 216)) ('MEN1', 'Gene', (158, 162)) ('NF1', 'Gene', '4763', (213, 216)) ('tumor', 'Phenotype', 'HP:0002664', (197, 202)) ('FHH', 'Gene', '846', (153, 156)) ('MEN2', 'Disease', (167, 171)) ('hyperparathyroidism-jaw tumor syndrome', 'Disease', (173, 211)) ('variants', 'Var', (39, 47)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (173, 192)) 19023 29308445 Thirteen of 22 RET mutation carriers harbored the moderate-risk p.Val804Met variant, indicating that this allele is likely associated with low disease penetrance. ('p.Val804Met', 'Var', (64, 75)) ('RET', 'Gene', '5979', (15, 18)) ('low disease', 'Disease', (139, 150)) ('p.Val804Met', 'Mutation', 'rs79658334', (64, 75)) ('low disease', 'Disease', 'MESH:D009800', (139, 150)) ('RET', 'Gene', (15, 18)) 19024 29308445 Excluding the p.Val804Met variant, approximately one in 6000 individuals carried moderate- or high-risk RET mutations, indicating that the disease penetrance of these alleles may also require reevaluation. ('RET', 'Gene', (104, 107)) ('p.Val804Met', 'Mutation', 'rs79658334', (14, 25)) ('RET', 'Gene', '5979', (104, 107)) ('p.Val804Met', 'Var', (14, 25)) 19025 29308445 An apparent similar overrepresentation of disease alleles was observed for the calcium sensing receptor (CASR), in which approximately one in 3500 individuals harbored a variant previously associated with FHH type 1 (estimated prevalence: 1:15 to 30,000), although in this setting it is plausible that the condition is more prevalent than currently recognized because of its typically asymptomatic phenotype. ('CASR', 'Gene', (105, 109)) ('FHH type', 'Disease', (205, 213)) ('variant', 'Var', (170, 177)) ('FHH type', 'Disease', 'MESH:C537145', (205, 213)) ('calcium sensing receptor', 'Gene', '846', (79, 103)) ('CASR', 'Gene', '846', (105, 109)) ('calcium sensing receptor', 'Gene', (79, 103)) 19026 29308445 In contrast, the higher-than-expected occurrence of potentially pathogenic MEN1 and VHL variants in the ExAC cohort indicates that several of these variants were likely misclassified. ('VHL', 'Disease', (84, 87)) ('pathogenic', 'Reg', (64, 74)) ('MEN1', 'Gene', (75, 79)) ('variants', 'Var', (88, 96)) ('MEN1', 'Gene', '4221', (75, 79)) ('VHL', 'Disease', 'MESH:D006623', (84, 87)) 19027 29308445 However, it is important to note that in the case of VHL, four of the six likely pathogenic variants occurred in individuals from the TCGA cohort, which included 344 patients with a history of sporadic renal clear cell carcinoma who may be at an increased risk of harboring such germline variants . ('VHL', 'Disease', (53, 56)) ('VHL', 'Disease', 'MESH:D006623', (53, 56)) ('occurred', 'Reg', (101, 109)) ('patients', 'Species', '9606', (166, 174)) ('sporadic renal clear cell carcinoma', 'Disease', 'MESH:C538614', (193, 228)) ('sporadic renal clear cell carcinoma', 'Disease', (193, 228)) ('carcinoma', 'Phenotype', 'HP:0030731', (219, 228)) ('variants', 'Var', (92, 100)) 19028 29308445 Next, the ExAC cohort was evaluated for individuals harboring clinically-actionable variants in one of seven hereditary endocrine tumor predisposition genes currently included in the ACMG guidelines. ('endocrine tumor', 'Phenotype', 'HP:0100568', (120, 135)) ('hereditary endocrine tumor', 'Disease', 'MESH:D004701', (109, 135)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('variants', 'Var', (84, 92)) ('hereditary endocrine tumor', 'Disease', (109, 135)) 19029 29308445 Germline mutations in AIP are reported in familial isolated pituitary adenoma kindreds but are associated with reduced penetrance, making it difficult to differentiate between hereditary and sporadic forms. ('Germline mutations', 'Var', (0, 18)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (60, 77)) ('familial isolated pituitary adenoma', 'Disease', (42, 77)) ('AIP', 'Gene', '9049', (22, 25)) ('AIP', 'Gene', (22, 25)) ('familial isolated pituitary adenoma', 'Disease', 'MESH:C566321', (42, 77)) ('isolated pituitary adenoma', 'Phenotype', 'HP:0011761', (51, 77)) 19030 29308445 Germline AIP variants have also been reported in individuals with apparent sporadic pituitary tumors, although ascribing pathogenicity may be challenging because several AIP variants are observed in both disease and control populations. ('variants', 'Var', (13, 21)) ('pituitary tumors', 'Disease', (84, 100)) ('AIP', 'Gene', (9, 12)) ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('AIP', 'Gene', '9049', (170, 173)) ('AIP', 'Gene', '9049', (9, 12)) ('AIP', 'Gene', (170, 173)) ('pituitary tumors', 'Disease', 'MESH:D010911', (84, 100)) ('tumors', 'Phenotype', 'HP:0002664', (94, 100)) ('reported', 'Reg', (37, 45)) 19031 29308445 To investigate the role of AIP in this setting, we compared the frequencies of rare germline missense AIP variants in 1866 individuals with sporadic pituitary adenomas (reported in nine previous studies; ) with those observed in the ExAC cohort. ('AIP', 'Gene', (102, 105)) ('variants', 'Var', (106, 114)) ('sporadic pituitary adenomas', 'Disease', (140, 167)) ('sporadic pituitary adenomas', 'Disease', 'MESH:D010911', (140, 167)) ('missense', 'Var', (93, 101)) ('AIP', 'Gene', '9049', (102, 105)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (149, 167)) ('AIP', 'Gene', (27, 30)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (149, 166)) ('AIP', 'Gene', '9049', (27, 30)) ('sporadic pituitary adenomas', 'Phenotype', 'HP:0011761', (140, 167)) 19032 29308445 Of note, only a small excess of rare missense AIP variants was observed in the tumor cohort compared with the ExAC cohort (odds ratio, 1.4; confidence interval: 1.0 to 2.0), whereas no overall excess was identified when compared with the European ExAC subpopulation, selected to represent the most relevant cohort for comparison (Table 3). ('AIP', 'Gene', '9049', (46, 49)) ('tumor', 'Disease', (79, 84)) ('AIP', 'Gene', (46, 49)) ('variants', 'Var', (50, 58)) ('missense', 'Var', (37, 45)) ('tumor', 'Disease', 'MESH:D009369', (79, 84)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) 19033 29308445 Furthermore, no overrepresentation of several missense AIP variants previously reported as pathogenic (e.g., Arg304Gln) were observed in the tumor group, indicating that such variants are most likely benign or associated with very low penetrance (i.e., <1%). ('tumor', 'Disease', 'MESH:D009369', (141, 146)) ('Arg304Gln', 'SUBSTITUTION', 'None', (109, 118)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('tumor', 'Disease', (141, 146)) ('AIP', 'Gene', '9049', (55, 58)) ('Arg304Gln', 'Var', (109, 118)) ('AIP', 'Gene', (55, 58)) 19036 29308445 For example, the pretest likelihood of identifying at least one rare missense/LOF SNV (AF <0.5%) when employing a 15-gene panel for PPGL was estimated at ~14% (i.e., one in every seven individuals), with ~3% of control individuals harboring a novel singleton variant (i.e., one in every 31 individuals). ('AF', 'Disease', 'MESH:D001281', (87, 89)) ('missense/LOF', 'Var', (69, 81)) ('ret', 'Gene', (18, 21)) ('PPGL', 'Gene', (132, 136)) ('ret', 'Gene', '5979', (18, 21)) 19039 29308445 Recent studies have highlighted the occurrence of widespread variant misclassification in association with several disorders, which have frequently arisen as a result of ascertainment and reporting bias, a failure to genetically characterize sufficiently large patient and control cohorts, and an overreliance on SNV rarity per se and computational tools in predicting pathogenicity. ('variant misclassification', 'Var', (61, 86)) ('association', 'Interaction', (90, 101)) ('patient', 'Species', '9606', (261, 268)) 19040 29308445 In this study, we used the ExAC cohort to quantify the spectrum and frequency of rare nonsynonymous germline variants occurring in a broad range of genes associated with hereditary endocrine diseases and illustrate the potential utility of this information for improved variant interpretation, both in ascribing potential pathogenicity and in reevaluating estimates of disease penetrance. ('ret', 'Gene', (284, 287)) ('ret', 'Gene', '5979', (284, 287)) ('hereditary endocrine diseases', 'Disease', 'MESH:D030342', (170, 199)) ('endocrine disease', 'Phenotype', 'HP:0000818', (181, 198)) ('hereditary endocrine diseases', 'Disease', (170, 199)) ('variants', 'Var', (109, 117)) 19042 29308445 Although consensus guidelines have been established by the ACMG for the clinical interpretation of germline sequence variants, in many instances an unambiguous assignment of pathogenicity is not possible. ('variants', 'Var', (117, 125)) ('ret', 'Gene', (87, 90)) ('ret', 'Gene', '5979', (87, 90)) 19043 29308445 Although these approaches in isolation do not provide sufficient evidence to categorize variants as pathogenic/likely pathogenic (i.e., enabling categorization only as a variant of uncertain significance), they are frequently cited as supporting evidence of pathogenicity and may ultimately result in a patient being managed as if the variant is disease causing. ('variants', 'Var', (88, 96)) ('result in', 'Reg', (291, 300)) ('patient', 'Species', '9606', (303, 310)) 19044 29308445 Our analyses indicate that variant rarity (i.e., the absence or very low AF of a variant in a control database) together with computational prediction tools frequently have a low specificity for ascribing clinically relevant effects and that relying on such features likely overestimates pathogenicity. ('variant', 'Var', (81, 88)) ('variant', 'Var', (27, 34)) ('AF', 'Disease', 'MESH:D001281', (73, 75)) ('low', 'NegReg', (175, 178)) 19046 29308445 For example, variants in genes associated with very low rates of rare variation and intolerant constraint metrics are more likely to be pathogenic than those in genes with greater tolerance of variation, and such information may be useful to the clinician in deciding how to counsel/follow-up a patient with an ambiguous test result (e.g., a variant of uncertain significance). ('patient', 'Species', '9606', (295, 302)) ('variants', 'Var', (13, 21)) ('pathogenic', 'Reg', (136, 146)) 19047 29308445 In the current study, we observed improbably high frequencies of variants reported as pathogenic in several genes (e.g., RET, VHL, and MEN1), indicating their likely prior misclassification and/or overestimates of disease penetrance. ('VHL', 'Disease', (126, 129)) ('VHL', 'Disease', 'MESH:D006623', (126, 129)) ('RET', 'Gene', '5979', (121, 124)) ('variants', 'Var', (65, 73)) ('MEN1', 'Gene', (135, 139)) ('MEN1', 'Gene', '4221', (135, 139)) ('RET', 'Gene', (121, 124)) ('pathogenic', 'Reg', (86, 96)) 19048 29308445 Indeed, the need to define allele-specific estimates of disease penetrance is an important concept, as recently illustrated for prion disease in which the disease-penetrance of individual PRNP variants ranged from <0.1% to ~100%. ('PRNP', 'Gene', (188, 192)) ('variants', 'Var', (193, 201)) ('prion', 'Species', '36469', (128, 133)) ('prion disease', 'Disease', (128, 141)) 19049 29308445 Our studies suggest that similar dynamic ranges of penetrance are likely to occur for alleles associated with endocrine disease (e.g., RET), and quantifying these is essential to enable appropriate patient care (e.g., appropriate guidance on the timing/requirement for prophylactic thyroidectomy in individuals with RET variants associated with MEN2/familial medullary thyroid cancer. ('cancer', 'Phenotype', 'HP:0002664', (377, 383)) ('associated', 'Reg', (329, 339)) ('endocrine disease', 'Phenotype', 'HP:0000818', (110, 127)) ('RET', 'Gene', '5979', (316, 319)) ('patient', 'Species', '9606', (198, 205)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (369, 383)) ('thyroid cancer', 'Disease', (369, 383)) ('variants', 'Var', (320, 328)) ('endocrine disease', 'Disease', (110, 127)) ('RET', 'Gene', (316, 319)) ('RET', 'Gene', '5979', (135, 138)) ('thyroid cancer', 'Disease', 'MESH:D013964', (369, 383)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (359, 383)) ('endocrine disease', 'Disease', 'MESH:D004700', (110, 127)) ('MEN', 'Species', '9606', (345, 348)) ('RET', 'Gene', (135, 138)) 19050 29308445 For example, the failure to demonstrate enrichment of several individual AIP variants (e.g., Arg304Gln) in a large pituitary tumor cohort compared with the ExAC population cannot exclude an etiological role in disease, although it suggests that any disease relationship is associated with extremely low penetrance and that the overwhelming majority of such variant carriers will not manifest clinical features. ('AIP', 'Gene', (73, 76)) ('pituitary tumor', 'Disease', 'MESH:D010911', (115, 130)) ('AIP', 'Gene', '9049', (73, 76)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('Arg304Gln', 'Var', (93, 102)) ('Arg304Gln', 'SUBSTITUTION', 'None', (93, 102)) ('pituitary tumor', 'Disease', (115, 130)) 19052 29308445 Our results reveal that approximately one in 900 individuals in the ExAC cohort harbored an apparent clinically actionable missense/LOF SNV in one of seven endocrine tumor predisposition genes currently included in the ACMG guidelines for the reporting of incidental genetic findings in clinical exome and genome data, which is considerably higher than the combined prevalence of the associated disorders (estimated to be 1:10,000). ('tumor', 'Phenotype', 'HP:0002664', (166, 171)) ('SNV', 'Var', (136, 139)) ('endocrine tumor', 'Disease', 'MESH:D004701', (156, 171)) ('endocrine tumor', 'Disease', (156, 171)) ('missense/LOF SNV', 'Var', (123, 139)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (156, 171)) 19054 29308445 This not only highlights the potential clinical burden that increased genetic testing may bring but also emphasizes the need for accurate estimates of variant pathogenicity and penetrance because the potential for patient harm arising through tumor surveillance programs is not insignificant. ('patient', 'Species', '9606', (214, 221)) ('genetic testing', 'Var', (70, 85)) ('tumor', 'Disease', 'MESH:D009369', (243, 248)) ('tumor', 'Phenotype', 'HP:0002664', (243, 248)) ('tumor', 'Disease', (243, 248)) 19058 29308445 For example, the reliability of sequence data for genes with multiple pseudogenes (e.g., SDHA) may be reduced, although in these instances, visual inspection of individual sequence reads covering regions adjacent to the SNVs enabled increased confidence in the variant call . ('variant', 'Var', (261, 268)) ('SDHA', 'Gene', '6389', (89, 93)) ('increased', 'PosReg', (233, 242)) ('SDHA', 'Gene', (89, 93)) 19064 28464318 Germline mutations cause congenital central hypoventilation syndrome and predispose to neuroblastoma and Hirschsprung disease. ('Germline mutations', 'Var', (0, 18)) ('cause', 'Reg', (19, 24)) ('congenital central hypoventilation syndrome', 'Disease', (25, 68)) ('Hirschsprung disease', 'Phenotype', 'HP:0002251', (105, 125)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (87, 100)) ('predispose', 'Reg', (73, 83)) ('congenital central hypoventilation syndrome', 'Disease', 'MESH:C536209', (25, 68)) ('neuroblastoma and Hirschsprung disease', 'Disease', 'MESH:C538119', (87, 125)) ('central hypoventilation', 'Phenotype', 'HP:0007110', (36, 59)) ('hypoventilation', 'Phenotype', 'HP:0002791', (44, 59)) 19078 28464318 Germline PHOX2B mutations cause congenital central hypoventilation syndrome and predispose to neuroblastoma and Hirschsprung disease. ('cause', 'Reg', (26, 31)) ('predispose', 'Reg', (80, 90)) ('mutations', 'Var', (16, 25)) ('hypoventilation', 'Phenotype', 'HP:0002791', (51, 66)) ('Hirschsprung disease', 'Phenotype', 'HP:0002251', (112, 132)) ('PHOX2B', 'Gene', (9, 15)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (94, 107)) ('congenital central hypoventilation syndrome', 'Disease', (32, 75)) ('congenital central hypoventilation syndrome', 'Disease', 'MESH:C536209', (32, 75)) ('PHOX2B', 'Gene', '8929', (9, 15)) ('neuroblastoma and Hirschsprung disease', 'Disease', 'MESH:C538119', (94, 132)) ('central hypoventilation', 'Phenotype', 'HP:0007110', (43, 66)) 19296 27729064 The sensitivity of iodine123-MIBG scintigraphy for detecting pheochromocytoma is approximately 90 %, and known factors responsible for false-negative results include extra-adrenal or small adrenal pheochromocytoma, succinate dehydrogenase subunit B (SDHB) gene mutations, drug interference, and extensive necrosis in the tumor. ('pheochromocytoma', 'Disease', (197, 213)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (197, 213)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (61, 77)) ('tumor', 'Disease', (321, 326)) ('extra-adrenal or small adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (166, 213)) ('tumor', 'Disease', 'MESH:D009369', (321, 326)) ('pheochromocytoma', 'Disease', (61, 77)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (61, 77)) ('mutations', 'Var', (261, 270)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (189, 213)) ('extra-adrenal or small adrenal pheochromocytoma', 'Disease', (166, 213)) ('SDHB', 'Gene', '6390', (250, 254)) ('tumor', 'Phenotype', 'HP:0002664', (321, 326)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (215, 248)) ('necrosis', 'Disease', 'MESH:D009336', (305, 313)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (197, 213)) ('SDHB', 'Gene', (250, 254)) ('small adrenal', 'Phenotype', 'HP:0000835', (183, 196)) ('iodine123-MIBG', 'Chemical', '-', (19, 33)) ('succinate dehydrogenase subunit B', 'Gene', (215, 248)) ('necrosis', 'Disease', (305, 313)) 19322 27270552 reported that catecholamines cause myocardial necrosis, focal myofibrillar degeneration, and subsequent fibrous scar formation. ('myocardial necrosis', 'Phenotype', 'HP:0001700', (35, 54)) ('myocardial necrosis', 'Disease', 'MESH:D009202', (35, 54)) ('focal myofibrillar degeneration', 'Disease', (56, 87)) ('catecholamines', 'Var', (14, 28)) ('focal myofibrillar degeneration', 'Disease', 'MESH:C580316', (56, 87)) ('myocardial necrosis', 'Disease', (35, 54)) ('scar', 'Phenotype', 'HP:0100699', (112, 116)) ('myofibrillar degeneration', 'Phenotype', 'HP:0003715', (62, 87)) ('catecholamines', 'Chemical', 'MESH:D002395', (14, 28)) ('fibrous scar formation', 'CPA', (104, 126)) 19324 27270552 Moreover, long-term high catecholamine levels can lead to myocardial hypertrophy and heart failure. ('lead to', 'Reg', (50, 57)) ('heart failure', 'Disease', (85, 98)) ('catecholamine', 'Chemical', 'MESH:D002395', (25, 38)) ('high catecholamine levels', 'Phenotype', 'HP:0003334', (20, 45)) ('high', 'Var', (20, 24)) ('heart failure', 'Phenotype', 'HP:0001635', (85, 98)) ('heart failure', 'Disease', 'MESH:D006333', (85, 98)) ('myocardial hypertrophy', 'Disease', 'MESH:D006332', (58, 80)) ('myocardial hypertrophy', 'Disease', (58, 80)) 19336 21958851 [18F]-DA detected less metastatic lesions compared to [18F]-DOPA. ('[18F]-DOPA', 'Chemical', '-', (54, 64)) ('metastatic lesions', 'CPA', (23, 41)) ('[18F]-DA', 'Chemical', '-', (0, 8)) ('[18F]-DA', 'Var', (0, 8)) ('less', 'NegReg', (18, 22)) 19337 21958851 TLR values for liver metastases were 2.26-2.71 for [18F]-DOPA and 1.83-2.83 for [18F]-DA. ('[18F]-DOPA', 'Var', (51, 61)) ('metastases', 'Disease', 'MESH:D009362', (21, 31)) ('[18F]-DA', 'Chemical', '-', (80, 88)) ('[18F]-DA', 'Var', (80, 88)) ('metastases', 'Disease', (21, 31)) ('[18F]-DOPA', 'Chemical', '-', (51, 61)) 19341 21958851 We confirmed [18F]-DA's high affinity for the NET for its uptake and VMAT1 and VMAT2 for its storage and retention in pheochromocytoma cell vesicles. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (118, 134)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (118, 134)) ('[18F]-DA', 'Chemical', '-', (13, 21)) ('uptake', 'MPA', (58, 64)) ('[18F]-DA', 'Var', (13, 21)) ('pheochromocytoma', 'Disease', (118, 134)) 19344 21958851 [18F]-DOPA had overall better sensitivity than [18F]-DA for the detection of metastases. ('better', 'PosReg', (23, 29)) ('metastases', 'Disease', (77, 87)) ('[18F]-DA', 'Chemical', '-', (47, 55)) ('[18F]-DOPA', 'Chemical', '-', (0, 10)) ('metastases', 'Disease', 'MESH:D009362', (77, 87)) ('[18F', 'Var', (0, 4)) 19345 21958851 Subcutaneous tumors were localized only with [18F]-DOPA, a finding that may reflect differences in expression of VMAT1 and VMAT2, perhaps similar to some patients with pheochromocytoma where [18F]-DOPA provides better visualization of lesions than [18F]-DA. ('[18F]-DOPA', 'Var', (45, 55)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (168, 184)) ('VMAT1', 'Gene', (113, 118)) ('Subcutaneous tumors', 'Phenotype', 'HP:0001482', (0, 19)) ('Subcutaneous tumors', 'Disease', 'MESH:D013352', (0, 19)) ('[18F]-DOPA', 'Chemical', '-', (191, 201)) ('tumors', 'Phenotype', 'HP:0002664', (13, 19)) ('[18F]-DOPA', 'Chemical', '-', (45, 55)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (168, 184)) ('VMAT2', 'Gene', (123, 128)) ('patients', 'Species', '9606', (154, 162)) ('Subcutaneous tumors', 'Disease', (0, 19)) ('pheochromocytoma', 'Disease', (168, 184)) ('tumor', 'Phenotype', 'HP:0002664', (13, 18)) ('[18F]-DA', 'Chemical', '-', (248, 256)) 19351 21958851 Functional imaging studies with [18F]-DA and [18F]-DOPA have the advantage over anatomical imaging of superior specificity for identification of pheochromocytomas. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (145, 162)) ('[18F]-DA', 'Chemical', '-', (32, 40)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (145, 161)) ('[18F]-DA', 'Var', (32, 40)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (145, 162)) ('pheochromocytomas', 'Disease', (145, 162)) ('[18F]-DOPA', 'Chemical', '-', (45, 55)) 19354 21958851 [18F]-DOPA, an analogue of the dopamine precursor, DOPA, is incorporated into tumor cells via the aromatic amino acid transporter. ('rat', 'Species', '10116', (67, 70)) ('dopamine', 'Chemical', 'MESH:D004298', (31, 39)) ('tumor', 'Disease', 'MESH:D009369', (78, 83)) ('[18F]-DOPA', 'Chemical', '-', (0, 10)) ('tumor', 'Disease', (78, 83)) ('tumor', 'Phenotype', 'HP:0002664', (78, 83)) ('DOPA', 'Chemical', 'MESH:D004295', (6, 10)) ('DOPA', 'Chemical', 'MESH:D004295', (51, 55)) ('[18F]-DOPA', 'Var', (0, 10)) 19411 21958851 For all sections, primary antibodies were detected with species-specific secondary antibodies consisting of donkey anti-rabbit Cy3, anti-goat FITC and anti-sheep DyLight. ('FITC', 'Chemical', 'MESH:D016650', (142, 146)) ('anti-sheep DyLight', 'Var', (151, 169)) ('goat', 'Species', '9925', (137, 141)) ('donkey', 'Species', '9793', (108, 114)) ('sheep', 'Species', '9940', (156, 161)) ('anti-goat', 'Var', (132, 141)) ('rabbit', 'Species', '9986', (120, 126)) ('Cy3', 'Chemical', '-', (127, 130)) ('detected', 'Reg', (42, 50)) 19444 21958851 Thirty to forty liver lesions were localized using [18F]-DA PET in eight out of nine animals, while [18F]-DOPA PET localized more than 50 liver lesions in nine animals (Table 1). ('[18F]-DA', 'Var', (51, 59)) ('liver lesions', 'Disease', (16, 29)) ('liver lesions', 'Disease', 'MESH:D017093', (138, 151)) ('liver lesions', 'Disease', (138, 151)) ('[18F]-DOPA', 'Chemical', '-', (100, 110)) ('[18F]-DA', 'Chemical', '-', (51, 59)) ('liver lesions', 'Disease', 'MESH:D017093', (16, 29)) 19445 21958851 Eight adrenal lesions were detected with [18F]-DA in four out of nine animals compared to nine detected in five out of nine with [18F]-DOPA. ('[18F]-DA', 'Chemical', '-', (41, 49)) ('[18F]-DOPA', 'Chemical', '-', (129, 139)) ('adrenal', 'Disease', (6, 13)) ('[18F]-DA', 'Var', (41, 49)) 19447 21958851 Desipramine had a stronger inhibiting effect compared to reserpine on accumulation of [18F]-DA during the initial 10-min uptake phase (P<.05; Fig. ('Desipramine', 'Chemical', 'MESH:D003891', (0, 11)) ('[18F]-DA', 'Chemical', '-', (86, 94)) ('reserpine', 'Chemical', 'MESH:D012110', (57, 66)) ('Desipramine', 'Var', (0, 11)) ('inhibiting', 'NegReg', (27, 37)) ('accumulation', 'MPA', (70, 82)) 19453 21958851 Relative to control cells, uptake of [18F]-DOPA after the 10-min incubation period was decreased (P<.001) to 67.37% after desipramine, 14.03% after reserpine, 17.87% after tetrabenazine and 13.47% after the combination of desipramine and reserpine (Fig. ('[18F]-DOPA', 'Chemical', '-', (37, 47)) ('decreased', 'NegReg', (87, 96)) ('desipramine', 'Chemical', 'MESH:D003891', (222, 233)) ('desipramine', 'Chemical', 'MESH:D003891', (122, 133)) ('uptake of [18F]-DOPA', 'MPA', (27, 47)) ('desipramine', 'Var', (122, 133)) ('reserpine', 'Chemical', 'MESH:D012110', (148, 157)) ('tetrabenazine', 'Chemical', 'MESH:D013747', (172, 185)) ('reserpine', 'Chemical', 'MESH:D012110', (238, 247)) 19463 21958851 While [18F]-DA and [18F]-DOPA PET performed equally well for the detection of ovarian metastatic tumors, [18F]-DOPA PET showed superiority to [18F]-DA PET in the detection of liver, lung and s.c. tumors. ('tumors', 'Phenotype', 'HP:0002664', (196, 202)) ('lung', 'Disease', (182, 186)) ('[18F]-DOPA', 'Chemical', '-', (105, 115)) ('ovarian metastatic tumors', 'Disease', (78, 103)) ('[18F]-DOPA', 'Chemical', '-', (19, 29)) ('tumors', 'Disease', (196, 202)) ('[18F]-DOPA', 'Var', (105, 115)) ('liver', 'Disease', (175, 180)) ('tumors', 'Disease', 'MESH:D009369', (196, 202)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('ovarian metastatic tumors', 'Disease', 'MESH:D010051', (78, 103)) ('tumors', 'Disease', (97, 103)) ('tumors', 'Phenotype', 'HP:0002664', (97, 103)) ('[18F]-DA', 'Chemical', '-', (6, 14)) ('tumors', 'Disease', 'MESH:D009369', (97, 103)) ('[18F]-DA', 'Chemical', '-', (142, 150)) ('tumor', 'Phenotype', 'HP:0002664', (196, 201)) 19464 21958851 In particular, s.c. tumors were detected only with [18F]-DOPA PET. ('tumors', 'Disease', 'MESH:D009369', (20, 26)) ('tumors', 'Phenotype', 'HP:0002664', (20, 26)) ('tumors', 'Disease', (20, 26)) ('[18F]-DOPA', 'Var', (51, 61)) ('tumor', 'Phenotype', 'HP:0002664', (20, 25)) ('[18F]-DOPA', 'Chemical', '-', (51, 61)) 19468 21958851 As supported by several clinical studies functional imaging using [18F]-DA and [18F]-DOPA PET is a useful tool for diagnostic localization of pheochromocytomas and paragangliomas (extra-adrenal pheochromocytomas). ('pheochromocytoma', 'Phenotype', 'HP:0002666', (142, 158)) ('[18F]-DA', 'Chemical', '-', (66, 74)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (142, 159)) ('paragangliomas', 'Phenotype', 'HP:0002668', (164, 178)) ('extra-adrenal pheochromocytomas', 'Disease', (180, 211)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (194, 211)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (194, 210)) ('extra-adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (180, 211)) ('[18F]-DOPA', 'Chemical', '-', (79, 89)) ('[18F]-DOPA', 'Var', (79, 89)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (142, 178)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (186, 211)) 19474 21958851 For example, in patients with malignant paragangliomas due to succinate dehydrogenase subunit B mutations, [18F]-DA is superior to [18F]-DOPA for localization of metastases (reverse to the present animal model of pheochromocytoma), whereas in other patients with so called 'head-and-neck' paragangliomas, [18F]-DOPA is superior to [18F]-DA. ('metastases', 'Disease', (162, 172)) ('patients', 'Species', '9606', (16, 24)) ('malignant paragangliomas', 'Disease', (30, 54)) ('paragangliomas', 'Disease', 'MESH:D010235', (40, 54)) ('pheochromocytoma', 'Disease', (213, 229)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (213, 229)) ('mutations', 'Var', (96, 105)) ('paragangliomas', 'Phenotype', 'HP:0002668', (40, 54)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (30, 54)) ('paragangliomas', 'Disease', (289, 303)) ('[18F]-DOPA', 'Chemical', '-', (131, 141)) ('[18F]-DOPA', 'Chemical', '-', (305, 315)) ('patients', 'Species', '9606', (249, 257)) ('localization', 'MPA', (146, 158)) ('paragangliomas', 'Disease', (40, 54)) ('[18F]-DA', 'Chemical', '-', (331, 339)) ('metastases', 'Disease', 'MESH:D009362', (162, 172)) ('succinate', 'Gene', (62, 71)) ('paragangliomas', 'Disease', 'MESH:D010235', (289, 303)) ('paragangliomas', 'Phenotype', 'HP:0002668', (289, 303)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (213, 229)) ('[18F]-DA', 'Chemical', '-', (107, 115)) 19487 21958851 This is well documented from previous studies where the uptake of [18F]-DOPA in the central nervous dopaminergic system depended on the presence VMAT2. ('dopamine', 'Chemical', 'MESH:D004298', (100, 108)) ('presence', 'Var', (136, 144)) ('depended', 'Reg', (120, 128)) ('[18F]-DOPA', 'Chemical', '-', (66, 76)) 19489 21958851 Second, we did not study any presence and function of the cell membrane amino acid transporter system that is known to allow l-DOPA to enter a pheochromocytoma cell; lastly, the absence of in vivo experiments manipulating (e.g., inhibiting) NET, VMAT1 and VMAT2, and amino acid transporters. ('inhibiting', 'NegReg', (229, 239)) ('VMAT1', 'MPA', (246, 251)) ('NET', 'MPA', (241, 244)) ('manipulating', 'Var', (209, 221)) ('pheochromocytoma', 'Disease', (143, 159)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (143, 159)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (143, 159)) ('l-DOPA', 'Chemical', 'MESH:D007980', (125, 131)) ('VMAT2', 'Enzyme', (256, 261)) ('amino acid transporters', 'MPA', (267, 290)) 19491 21958851 In summary, this is the first study to compare multi-imaging modalities with [18F]-DOPA and [18F]-DA PET, microCT and MRI for detection of organ metastatic and s.c. lesions in nude mice model of pheochromocytoma. ('[18F]-DOPA', 'Chemical', '-', (77, 87)) ('[18F]-DA', 'Chemical', '-', (92, 100)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (195, 211)) ('[18F]-DA', 'Var', (92, 100)) ('pheochromocytoma', 'Disease', (195, 211)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (195, 211)) ('nude mice', 'Species', '10090', (176, 185)) ('organ metastatic', 'CPA', (139, 155)) 19547 24616770 Surrounding the tumour lobules were several spindle cells S-100+ (sustentacular cells). ('tumour', 'Phenotype', 'HP:0002664', (16, 22)) ('tumour', 'Disease', 'MESH:D009369', (16, 22)) ('tumour', 'Disease', (16, 22)) ('S-100+', 'Var', (58, 64)) 19563 24616770 Owing to the high prevalence of mutations in the SDH gene in people suffering from paraganglioma, genetic testing is mandatory. ('SDH', 'Gene', '10993', (49, 52)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('SDH', 'Gene', (49, 52)) ('paraganglioma', 'Disease', (83, 96)) ('mutations', 'Var', (32, 41)) ('people', 'Species', '9606', (61, 67)) ('paraganglioma', 'Disease', 'MESH:D010235', (83, 96)) 19636 19432956 Mutations in 3 of the 4 genes encoding subunits of succinate dehydrogenase (SDH, complex II in the mitochondrial respiratory chain) have been implicated in the familial forms of the disease: SDHB, SDHC, and SDHD . ('SDHC', 'Gene', '6391', (197, 201)) ('SDHD', 'Gene', (207, 211)) ('SDHD', 'Gene', '6392', (207, 211)) ('implicated', 'Reg', (142, 152)) ('SDHB', 'Gene', (191, 195)) ('succinate dehydrogenase', 'Gene', '6390', (51, 74)) ('SDH', 'Gene', '6390', (76, 79)) ('SDH', 'Gene', '6390', (207, 210)) ('SDH', 'Gene', '6390', (191, 194)) ('SDH', 'Gene', '6390', (197, 200)) ('succinate dehydrogenase', 'Gene', (51, 74)) ('Mutations', 'Var', (0, 9)) ('SDHC', 'Gene', (197, 201)) ('SDH', 'Gene', (76, 79)) ('SDH', 'Gene', (191, 194)) ('SDH', 'Gene', (197, 200)) ('SDHB', 'Gene', '6390', (191, 195)) ('SDH', 'Gene', (207, 210)) 19640 19432956 Mutations in SDHB, SDHC and SDHD are also implicated in the formation of phaeochromocytomas, tumors arising in cells derived from the neural crest in the adrenal medulla. ('SDHD', 'Gene', (28, 32)) ('SDHC', 'Gene', '6391', (19, 23)) ('SDHD', 'Gene', '6392', (28, 32)) ('phaeochromocytomas', 'Disease', 'MESH:D010673', (73, 91)) ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('SDHB', 'Gene', '6390', (13, 17)) ('tumors', 'Disease', 'MESH:D009369', (93, 99)) ('tumors', 'Phenotype', 'HP:0002664', (93, 99)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (13, 17)) ('tumors', 'Disease', (93, 99)) ('phaeochromocytomas', 'Disease', (73, 91)) ('implicated', 'Reg', (42, 52)) ('SDHC', 'Gene', (19, 23)) 19656 19432956 Eighteen paraganglioma cases were selected: 7 cases with a known D92Y founder mutation in the SDHD gene, 6 cases from the family with significant linkage tot the PGL2 locus on 11q13, and 5 sporadic cases. ('paraganglioma', 'Disease', (9, 22)) ('SDHD', 'Gene', (94, 98)) ('D92Y', 'Var', (65, 69)) ('paraganglioma', 'Disease', 'MESH:D010235', (9, 22)) ('PGL2', 'Gene', '54949', (162, 166)) ('D92Y', 'Mutation', 'rs80338845', (65, 69)) ('PGL2', 'Gene', (162, 166)) ('paraganglioma', 'Phenotype', 'HP:0002668', (9, 22)) ('SDHD', 'Gene', '6392', (94, 98)) 19657 19432956 The latter were defined as 'sporadic' because mutation scanning of SDHB, SDHC, and SDHD was negative, while the family histories of these cases were negative for HN-paraganglioma or any of the other clinical stigmata that would suggest the involvement of VHL, NF1 or the RET gene. ('HN-paraganglioma', 'Disease', (162, 178)) ('SDHB', 'Gene', '6390', (67, 71)) ('paraganglioma', 'Phenotype', 'HP:0002668', (165, 178)) ('SDHC', 'Gene', (73, 77)) ('NF1', 'Gene', (260, 263)) ('RET', 'Gene', '5979', (271, 274)) ('SDHB', 'Gene', (67, 71)) ('RET', 'Gene', (271, 274)) ('NF1', 'Gene', '4763', (260, 263)) ('SDHC', 'Gene', '6391', (73, 77)) ('VHL', 'Gene', (255, 258)) ('SDHD', 'Gene', '6392', (83, 87)) ('involvement', 'Reg', (240, 251)) ('mutation', 'Var', (46, 54)) ('VHL', 'Gene', '7428', (255, 258)) ('SDHD', 'Gene', (83, 87)) ('HN-paraganglioma', 'Disease', 'MESH:D010235', (162, 178)) 19658 19432956 SDHB, SDHC, and SDHD genes were scanned for the presence of mutations at the laboratory for DNA diagnostics at the LUMC. ('SDHC', 'Gene', (6, 10)) ('SDHD', 'Gene', '6392', (16, 20)) ('SDHC', 'Gene', '6391', (6, 10)) ('SDHD', 'Gene', (16, 20)) ('SDHB', 'Gene', '6390', (0, 4)) ('mutations', 'Var', (60, 69)) ('SDHB', 'Gene', (0, 4)) 19659 19432956 All exonic regions of these genes were tested by direct sequencing using the Sanger method on an ABI 3177 Genetic Analyzer, starting with the exon containing the known Dutch founder mutations in SDHD followed by exons that had previously been found to contain pathogenic mutations in SDHD, SDHB, and SDHC (in that order) in the Dutch population. ('SDHD', 'Gene', '6392', (284, 288)) ('SDHB', 'Gene', '6390', (290, 294)) ('SDHD', 'Gene', (284, 288)) ('pathogenic', 'Reg', (260, 270)) ('SDHB', 'Gene', (290, 294)) ('SDHD', 'Gene', (195, 199)) ('SDHD', 'Gene', '6392', (195, 199)) ('SDHC', 'Gene', (300, 304)) ('SDHC', 'Gene', '6391', (300, 304)) ('mutations', 'Var', (271, 280)) ('mutations', 'Var', (182, 191)) 19660 19432956 More recently, the sporadic, mutation-negative cases were also examined by MLPA for the presence of large deletions in SDHB, SDHC, and SDHD. ('SDHD', 'Gene', '6392', (135, 139)) ('deletions', 'Var', (106, 115)) ('SDHD', 'Gene', (135, 139)) ('SDHB', 'Gene', '6390', (119, 123)) ('SDHC', 'Gene', (125, 129)) ('SDHC', 'Gene', '6391', (125, 129)) ('SDHB', 'Gene', (119, 123)) 19710 19432956 The mechanism of HIF1alpha induction in tumors with SDH mutations has recently been shown to be succinate accumulation resulting from loss of SDH function, leading to inhibition of HIF-alpha-prolyl hydroxylases and thus to elevated HIF1alpha activity. ('SDH', 'Gene', (52, 55)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('succinate', 'Chemical', 'MESH:D019802', (96, 105)) ('tumors', 'Disease', (40, 46)) ('mutations', 'Var', (56, 65)) ('SDH', 'Gene', '6390', (142, 145)) ('HIF1alpha', 'Gene', '3091', (232, 241)) ('HIF1alpha', 'Gene', '3091', (17, 26)) ('loss', 'NegReg', (134, 138)) ('HIF1alpha', 'Gene', (232, 241)) ('tumors', 'Disease', 'MESH:D009369', (40, 46)) ('HIF1alpha', 'Gene', (17, 26)) ('activity', 'MPA', (242, 250)) ('HIF-alpha-prolyl hydroxylases', 'Enzyme', (181, 210)) ('SDH', 'Gene', (142, 145)) ('elevated', 'PosReg', (223, 231)) ('SDH', 'Gene', '6390', (52, 55)) ('inhibition', 'NegReg', (167, 177)) ('function', 'MPA', (146, 154)) ('succinate accumulation', 'MPA', (96, 118)) ('tumors', 'Phenotype', 'HP:0002664', (40, 46)) 19713 19432956 PGL2 - and SDHD -linked tumors also appear to share the features of increased HIF1alpha activity and upregulation of HIF1alpha targets that results from SDH inactivity. ('tumor', 'Phenotype', 'HP:0002664', (24, 29)) ('inactivity', 'Var', (157, 167)) ('upregulation', 'PosReg', (101, 113)) ('HIF1alpha', 'Gene', '3091', (78, 87)) ('tumors', 'Phenotype', 'HP:0002664', (24, 30)) ('SDH', 'Gene', (11, 14)) ('SDHD -linked tumors', 'Disease', 'MESH:D009369', (11, 30)) ('SDHD -linked tumors', 'Disease', (11, 30)) ('PGL2', 'Gene', '54949', (0, 4)) ('SDH', 'Gene', (153, 156)) ('activity', 'MPA', (88, 96)) ('PGL2', 'Gene', (0, 4)) ('SDH', 'Gene', '6390', (153, 156)) ('HIF1alpha', 'Gene', (117, 126)) ('HIF1alpha', 'Gene', '3091', (117, 126)) ('HIF1alpha', 'Gene', (78, 87)) ('increased', 'PosReg', (68, 77)) ('SDH', 'Gene', '6390', (11, 14)) 19714 19432956 These findings may hold important clues for the function of the yet unidentified PGL2 gene on 11q13, as a defect in the yet unidentified PGL2 gene seems to have consequences similar to a mutation in the SDHD gene. ('PGL2', 'Gene', '54949', (81, 85)) ('PGL2', 'Gene', (137, 141)) ('PGL2', 'Gene', '54949', (137, 141)) ('PGL2', 'Gene', (81, 85)) ('SDHD', 'Gene', '6392', (203, 207)) ('SDHD', 'Gene', (203, 207)) ('defect', 'Var', (106, 112)) 19730 19432956 This suggests that a defect in the yet unidentified PGL2 gene, like a mutation in the SDHD gene, disrupts normal SDH function. ('SDH', 'Gene', (113, 116)) ('SDH', 'Gene', '6390', (86, 89)) ('SDHD', 'Gene', (86, 90)) ('PGL2', 'Gene', '54949', (52, 56)) ('SDH', 'Gene', (86, 89)) ('disrupts', 'NegReg', (97, 105)) ('PGL2', 'Gene', (52, 56)) ('SDH', 'Gene', '6390', (113, 116)) ('mutation', 'Var', (70, 78)) ('SDHD', 'Gene', '6392', (86, 90)) 19750 33920661 Notably, the two unique cell lines PTJ64i and PTJ86i were previously established in our laboratory from two patients with paraganglioma, a rare tumor that is poorly responsive to standard chemotherapy, for which new therapeutic agents are urgently needed, and which may benefit from an orphan designation. ('tumor', 'Disease', (144, 149)) ('paraganglioma', 'Phenotype', 'HP:0002668', (122, 135)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) ('paraganglioma', 'Disease', (122, 135)) ('PTJ86i', 'Var', (46, 52)) ('tumor', 'Disease', 'MESH:D009369', (144, 149)) ('paraganglioma', 'Disease', 'MESH:D010235', (122, 135)) ('patients', 'Species', '9606', (108, 116)) ('PTJ64i', 'Var', (35, 41)) 19756 33920661 The effects of 15 benzimidazole-based anthelmintics (Figure 1) on the viability of six cancer cell lines (AsPC-1, BxPC-3, PTJ64i, PTJ86i, HT-29 and SW480) were analyzed by MTT. ('cancer', 'Disease', (87, 93)) ('cancer', 'Disease', 'MESH:D009369', (87, 93)) ('PTJ64i', 'Var', (122, 128)) ('BxPC-3', 'CellLine', 'CVCL:0186', (114, 120)) ('MTT', 'Chemical', 'MESH:C070243', (172, 175)) ('cancer', 'Phenotype', 'HP:0002664', (87, 93)) ('SW480', 'CellLine', 'CVCL:0546', (148, 153)) ('HT-29', 'CellLine', 'CVCL:0320', (138, 143)) ('benzimidazole', 'Chemical', 'MESH:C031000', (18, 31)) ('AsPC-1', 'CellLine', 'CVCL:0152', (106, 112)) ('PTJ86i', 'Var', (130, 136)) 19780 33920661 In addition, (R)-oxfendazole was also consistently active in reducing the viability of PTJ64i e PTJ86i paraganglioma cell lines, with IC50 values of 10.02 muM and 12.41 muM, respectively, and in HT-29 colorectal cancer cell line, displaying an IC50 of 10.02 muM. ('reducing', 'NegReg', (61, 69)) ('(R)-oxfendazole', 'Chemical', '-', (13, 28)) ('paraganglioma', 'Disease', 'MESH:D010235', (103, 116)) ('PTJ86i', 'Var', (96, 102)) ('HT-29 colorectal cancer', 'Disease', 'MESH:D015179', (195, 218)) ('HT-29 colorectal cancer', 'Disease', (195, 218)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (201, 218)) ('paraganglioma', 'Phenotype', 'HP:0002668', (103, 116)) ('paraganglioma', 'Disease', (103, 116)) ('viability', 'CPA', (74, 83)) ('PTJ64i', 'Var', (87, 93)) ('cancer', 'Phenotype', 'HP:0002664', (212, 218)) 19805 33920661 So, the inhibition of the VEGF-2 receptor could be effective in impairing tumor vascularization, also promoting a "normal" vasculature within the tumor and leading to the efficient delivery of antitumor drugs. ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('impairing tumor', 'Disease', 'MESH:D060825', (64, 79)) ('VEGF-2', 'Gene', (26, 32)) ('leading to', 'Reg', (156, 166)) ('tumor', 'Disease', 'MESH:D009369', (197, 202)) ('impairing tumor', 'Disease', (64, 79)) ('tumor', 'Disease', 'MESH:D009369', (74, 79)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('tumor', 'Disease', (146, 151)) ('tumor', 'Disease', (74, 79)) ('tumor', 'Phenotype', 'HP:0002664', (197, 202)) ('promoting', 'PosReg', (102, 111)) ('inhibition', 'Var', (8, 18)) ('tumor', 'Disease', (197, 202)) ('delivery of', 'MPA', (181, 192)) ('tumor', 'Disease', 'MESH:D009369', (146, 151)) 19822 33920661 IC50 values of the six less active benzimidazoles on pancreatic (AsPC-1, BxPC-3), paraganglioma (PTJ64i, PTJ86i), and colorectal (HT-29, SW480) cancer cell lines. ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('BxPC-3', 'CellLine', 'CVCL:0186', (73, 79)) ('colorectal', 'Disease', (118, 128)) ('pancreatic', 'Disease', 'MESH:D010195', (53, 63)) ('AsPC-1', 'CellLine', 'CVCL:0152', (65, 71)) ('paraganglioma', 'Disease', (82, 95)) ('pancreatic', 'Disease', (53, 63)) ('cancer', 'Disease', 'MESH:D009369', (144, 150)) ('SW480', 'CellLine', 'CVCL:0546', (137, 142)) ('colorectal', 'Disease', 'MESH:D015179', (118, 128)) ('HT-29', 'CellLine', 'CVCL:0320', (130, 135)) ('cancer', 'Disease', (144, 150)) ('paraganglioma', 'Disease', 'MESH:D010235', (82, 95)) ('benzimidazoles', 'Chemical', 'MESH:D001562', (35, 49)) ('PTJ86i', 'Var', (105, 111)) ('cancer', 'Phenotype', 'HP:0002664', (144, 150)) ('IC50', 'MPA', (0, 4)) 19931 33157340 One month after surgery, the blood pressure remained normal without any antihypertensive therapy, the patient had less invalid intermittent claudication with a walking perimeter >200 m but still have intermittent abdominal pain. ('intermittent abdominal pain', 'Phenotype', 'HP:0002574', (200, 227)) ('abdominal pain', 'Phenotype', 'HP:0002027', (213, 227)) ('>200', 'Var', (178, 182)) ('abdominal pain', 'Disease', (213, 227)) ('patient', 'Species', '9606', (102, 109)) ('hypertensive', 'Disease', 'MESH:D006973', (76, 88)) ('abdominal pain', 'Disease', 'MESH:D015746', (213, 227)) ('intermittent claudication', 'Phenotype', 'HP:0004417', (127, 152)) ('hypertensive', 'Disease', (76, 88)) ('pain', 'Phenotype', 'HP:0012531', (223, 227)) 19948 33157340 On the other hand, irrecognition of renal artery stenosis in a patient with pheochromocytoma may lead to persistent hypertension after tumoral resection. ('irrecognition', 'Var', (19, 32)) ('tumoral', 'Disease', 'MESH:D009369', (135, 142)) ('hypertension', 'Disease', 'MESH:D006973', (116, 128)) ('pheochromocytoma', 'Disease', (76, 92)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('renal artery stenosis', 'Disease', 'MESH:D012078', (36, 57)) ('artery stenosis', 'Phenotype', 'HP:0100545', (42, 57)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (76, 92)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (76, 92)) ('hypertension', 'Disease', (116, 128)) ('hypertension', 'Phenotype', 'HP:0000822', (116, 128)) ('patient', 'Species', '9606', (63, 70)) ('renal artery stenosis', 'Disease', (36, 57)) ('lead to', 'Reg', (97, 104)) ('renal artery stenosis', 'Phenotype', 'HP:0001920', (36, 57)) ('tumoral', 'Disease', (135, 142)) 19970 31996412 Germline mutations in the new E1' cryptic exon of the VHL gene in patients with tumours of von Hippel-Lindau disease spectrum or with paraganglioma The incidence of germline mutations in the newly discovered cryptic exon (E1') of VHL gene in patients with von Hippel-Lindau (VHL) disease and in patients with paraganglioma or pheochromocytoma (PPGL) is not currently known. ('VHL', 'Gene', (54, 57)) ('paraganglioma', 'Phenotype', 'HP:0002668', (309, 322)) ('VHL', 'Gene', (275, 278)) ('tumours of von Hippel-Lindau disease', 'Disease', (80, 116)) ('VHL', 'Gene', '7428', (230, 233)) ('tumours of von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (80, 116)) ('patients', 'Species', '9606', (242, 250)) ('von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (256, 287)) ('paraganglioma', 'Phenotype', 'HP:0002668', (134, 147)) ('VHL', 'Gene', '7428', (54, 57)) ('mutations', 'Var', (174, 183)) ('VHL', 'Gene', '7428', (275, 278)) ('paraganglioma or pheochromocytoma', 'Disease', (309, 342)) ('paraganglioma or pheochromocytoma', 'Disease', 'MESH:D010673', (309, 342)) ('tumour', 'Phenotype', 'HP:0002664', (80, 86)) ('paraganglioma', 'Disease', (309, 322)) ('tumours', 'Phenotype', 'HP:0002664', (80, 87)) ('paraganglioma', 'Disease', 'MESH:D010235', (309, 322)) ('patients', 'Species', '9606', (66, 74)) ('patients', 'Species', '9606', (295, 303)) ('paraganglioma', 'Disease', (134, 147)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (326, 342)) ('VHL', 'Gene', (230, 233)) ('paraganglioma', 'Disease', 'MESH:D010235', (134, 147)) 19975 31996412 VHL E1' cryptic exon mutations contribute to 1.32% (1/76) of 'VHL-like' cohort and to 0.11% (1/946) of PPGL cohort and should be screened in patients with clinical suspicion of VHL, and added to panels for Next Generation Sequencing (NGS) diagnostic testing of hereditary PPGL. ('VHL', 'Gene', (177, 180)) ('VHL', 'Gene', '7428', (177, 180)) ('VHL', 'Gene', (0, 3)) ('PPGL', 'Disease', (272, 276)) ('VHL', 'Gene', (62, 65)) ('VHL', 'Gene', '7428', (0, 3)) ('VHL', 'Gene', '7428', (62, 65)) ('patients', 'Species', '9606', (141, 149)) ('mutations', 'Var', (21, 30)) 19980 31996412 Indeed, to date, approximately 17 susceptibility genes have been reported but two thirds of identified mutations are found in SDHB, SDHD and VHL genes. ('mutations', 'Var', (103, 112)) ('SDHD', 'Gene', (132, 136)) ('VHL', 'Gene', '7428', (141, 144)) ('SDHB', 'Gene', '6390', (126, 130)) ('SDHB', 'Gene', (126, 130)) ('SDHD', 'Gene', '6392', (132, 136)) ('VHL', 'Gene', (141, 144)) 19989 31996412 Germline DNA from 'VHL-like', 'Multiple VHL tumours' and 'Single VHL tumour' cohorts had been previously tested for VHL gene by Sanger sequencing or Next Generation Sequencing and large rearrangements by MLPA or QMPSF. ('VHL', 'Gene', '7428', (65, 68)) ('tumours', 'Phenotype', 'HP:0002664', (44, 51)) ('VHL', 'Gene', (40, 43)) ('VHL tumours', 'Disease', (40, 51)) ('VHL', 'Gene', (19, 22)) ('VHL', 'Gene', '7428', (40, 43)) ('VHL', 'Gene', (116, 119)) ('rearrangements', 'Var', (186, 200)) ('VHL', 'Gene', '7428', (19, 22)) ('tumour', 'Phenotype', 'HP:0002664', (69, 75)) ('VHL', 'Gene', '7428', (116, 119)) ('VHL tumours', 'Disease', 'MESH:D006623', (40, 51)) ('Single VHL tumour', 'Disease', (58, 75)) ('VHL', 'Gene', (65, 68)) ('tumour', 'Phenotype', 'HP:0002664', (44, 50)) ('Single VHL tumour', 'Disease', 'MESH:D006623', (58, 75)) 19994 31996412 Loss of heterozygosity (LOH) was evaluated by (1) Sanger sequencing of the E1' cryptic exon of VHL by mutation-specific primers and (2) microsatellite analysis on D3S1537, D3S1038, D3S1317 D3S3547, D3S3727 as previously described. ('VHL', 'Gene', (95, 98)) ('VHL', 'Gene', '7428', (95, 98)) ('D3S1038', 'Var', (172, 179)) ('D3S3727', 'Var', (198, 205)) ('D3S1317 D3S3547', 'Var', (181, 196)) ('D3S1537', 'Var', (163, 170)) 19995 31996412 VHL gene deletion on tumour DNA was assessed with the SALSA MLPA P016 VHL probemix (MRC-Holland). ('VHL', 'Gene', (70, 73)) ('VHL', 'Gene', '7428', (70, 73)) ('deletion', 'Var', (9, 17)) ('tumour', 'Phenotype', 'HP:0002664', (21, 27)) ('MRC', 'CellLine', 'CVCL:0440', (84, 87)) ('tumour', 'Disease', 'MESH:D009369', (21, 27)) ('VHL', 'Gene', (0, 3)) ('tumour', 'Disease', (21, 27)) ('VHL', 'Gene', '7428', (0, 3)) 19998 31996412 RNA was extracted from paraffin embedded tumours of six control PPGL (3 NF1-related, 2 RET-related and 1 TMEM127-related PPGL), 5 VHL- related PPGL (all carrying a missense mutation in VHL gene) and patients #3 and #10 PPGL by using the Maxwell 16 LEV RNA FFPE Purification Kit (Promega). ('missense mutation', 'Var', (164, 181)) ('tumour', 'Phenotype', 'HP:0002664', (41, 47)) ('tumours', 'Phenotype', 'HP:0002664', (41, 48)) ('VHL', 'Gene', (130, 133)) ('tumours', 'Disease', 'MESH:D009369', (41, 48)) ('VHL', 'Gene', (185, 188)) ('patients', 'Species', '9606', (199, 207)) ('VHL', 'Gene', '7428', (130, 133)) ('paraffin', 'Chemical', 'MESH:D010232', (23, 31)) ('tumours', 'Disease', (41, 48)) ('VHL', 'Gene', '7428', (185, 188)) 20006 31996412 We identified a rare germline genetic variant (minor allele frequency <1%) in the E1' VHL cryptic exon in 12 patients (1%). ('variant', 'Var', (38, 45)) ("E1' VHL", 'Gene', '6080;7428', (82, 89)) ("E1' VHL", 'Gene', (82, 89)) ('patients', 'Species', '9606', (109, 117)) 20009 31996412 None of these variants was found in a control cohort of 198 European subjects without VHL manifestations. ('VHL', 'Gene', (86, 89)) ('variants', 'Var', (14, 22)) ('VHL', 'Gene', '7428', (86, 89)) 20010 31996412 Seven patients (patients #2 to #8) (0.6%) carried the same rare variant of uncertain significance (VUS), c.340+578C>T which is referenced in dbSNP as rs139622356 and has been previously reported in the Genome Aggregation Database (gnomAD). ('c.340+578C>T', 'Mutation', 'rs139622356', (105, 117)) ('c.340+578C>T', 'Var', (105, 117)) ('rs139622356', 'Var', (150, 161)) ('rs139622356', 'Mutation', 'rs139622356', (150, 161)) ('patients', 'Species', '9606', (16, 24)) ('patients', 'Species', '9606', (6, 14)) 20015 31996412 None of the four patients with a PPGL and an E1' VUS have developed VHL spectrum tumour(s) during their follow-up and none of them had family history of VHL disease (table 2); however, segregation analysis was only performed in patient #9. ('tumour', 'Disease', 'MESH:D009369', (81, 87)) ('VHL', 'Gene', (153, 156)) ('PPGL', 'Var', (33, 37)) ('VHL disease', 'Disease', (153, 164)) ('VHL', 'Gene', '7428', (153, 156)) ('patient', 'Species', '9606', (17, 24)) ('VHL', 'Gene', (68, 71)) ('tumour', 'Disease', (81, 87)) ('patients', 'Species', '9606', (17, 25)) ('VHL', 'Gene', '7428', (68, 71)) ('VHL disease', 'Disease', 'MESH:D006623', (153, 164)) ('patient', 'Species', '9606', (228, 235)) ('tumour', 'Phenotype', 'HP:0002664', (81, 87)) 20016 31996412 The proband's mother did carry the variant and had a pancreatic cyst and multiple vertebral body haemangiomas which both are evocating of VHL disease. ('VHL disease', 'Disease', (138, 149)) ('pancreatic cyst and multiple vertebral body haemangiomas', 'Disease', 'MESH:D010181', (53, 109)) ('variant', 'Var', (35, 42)) ('VHL disease', 'Disease', 'MESH:D006623', (138, 149)) ('pancreatic cyst', 'Phenotype', 'HP:0001737', (53, 68)) 20019 31996412 In tumour DNA of patient #10, which harbours the c.340+682T>C variant, we identified a second variant in the exon 3 of VHL (c.482G>A; p.Arg161Gln), known to be pathogenic (figure 1). ('c.482G>A', 'Mutation', 'rs760434926', (124, 132)) ('tumour', 'Phenotype', 'HP:0002664', (3, 9)) ('c.340+682T>C', 'Var', (49, 61)) ('VHL', 'Gene', (119, 122)) ('patient', 'Species', '9606', (17, 24)) ('c.482G>A; p.Arg161Gln', 'Var', (124, 145)) ('tumour', 'Disease', 'MESH:D009369', (3, 9)) ('VHL', 'Gene', '7428', (119, 122)) ('tumour', 'Disease', (3, 9)) ('c.340+682T>C', 'Mutation', 'c.340+682T>C', (49, 61)) ('p.Arg161Gln', 'Mutation', 'rs730882035', (134, 145)) 20021 31996412 In the absence of LOH, this exon 3 variant may function as the second VHL hit in this tumour. ('VHL', 'Gene', (70, 73)) ('VHL', 'Gene', '7428', (70, 73)) ('tumour', 'Phenotype', 'HP:0002664', (86, 92)) ('tumour', 'Disease', 'MESH:D009369', (86, 92)) ('variant', 'Var', (35, 42)) ('tumour', 'Disease', (86, 92)) 20031 31996412 We assessed the expression of two different VHL mRNA: the mRNA containing the exons 1 and 2 (E1-E2), which will lead with the exon 3 to the expression of the two main VHL proteins (pVHL213 and pVHL160) and VHL mRNA containing the exon 1 and E1' (E1-E1'), which was previously described as increased in tumour or in lymphoblastoid cell lines of patients with E1' mutation. ('exon', 'Var', (230, 234)) ('VHL', 'Gene', (194, 197)) ('increased', 'PosReg', (289, 298)) ('VHL', 'Gene', (44, 47)) ('VHL', 'Gene', (182, 185)) ('tumour', 'Phenotype', 'HP:0002664', (302, 308)) ("E1'", 'Var', (241, 244)) ('VHL', 'Gene', '7428', (194, 197)) ('VHL', 'Gene', (206, 209)) ('VHL', 'Gene', (167, 170)) ('VHL', 'Gene', '7428', (44, 47)) ('VHL', 'Gene', '7428', (182, 185)) ('tumour', 'Disease', 'MESH:D009369', (302, 308)) ('VHL', 'Gene', '7428', (167, 170)) ('patients', 'Species', '9606', (344, 352)) ('tumour', 'Disease', (302, 308)) ('VHL', 'Gene', '7428', (206, 209)) 20032 31996412 In normal condition, this VHL E1-E1' mRNA is degraded by nonsense-mediated decay (NMD), and in this pathological condition, NMD may be overwhelmed. ('nonsense-mediated decay', 'Var', (57, 80)) ('degraded', 'NegReg', (45, 53)) ('VHL', 'Gene', (26, 29)) ('VHL', 'Gene', '7428', (26, 29)) 20035 31996412 Altogether, these data provide evidence that this VHL E1' mutation (c.340+682T>C) is a pathogenic mutation that combined with the second mutation (c.482G>A; p.Arg161Gln) induce tumorigenesis. ('p.Arg161Gln', 'Mutation', 'rs730882035', (157, 168)) ('tumorigenesis', 'CPA', (177, 190)) ('VHL', 'Gene', (50, 53)) ('c.482G>A; p.Arg161Gln', 'Var', (147, 168)) ('VHL', 'Gene', '7428', (50, 53)) ('c.340+682T>C', 'Mutation', 'c.340+682T>C', (68, 80)) ('c.482G>A', 'Mutation', 'rs760434926', (147, 155)) ('c.340+682T>C', 'Var', (68, 80)) ('induce', 'PosReg', (170, 176)) 20036 31996412 Finally, 23 patients carry the c.340+648T>C (rs73024533) variant, previously described in dbSNP, at an heterozygous state. ('patients', 'Species', '9606', (12, 20)) ('rs73024533', 'Mutation', 'rs73024533', (45, 55)) ('c.340+648T>C (rs73024533', 'Var', (31, 55)) ('c.340+648T>C', 'Mutation', 'rs73024533', (31, 43)) ('rs73024533', 'Var', (45, 55)) 20038 31996412 E1' mutations were previously described by Lenglet et al in eight families, either with erythrocytosis or VHL disease. ("E1'", 'Gene', (0, 3)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (88, 102)) ('erythrocytosis or VHL disease', 'Disease', 'MESH:D006623', (88, 117)) ('mutations', 'Var', (4, 13)) ('erythrocytosis or VHL disease', 'Disease', (88, 117)) 20039 31996412 These mutations led to an abnormal VHL mRNA with the insertion of the E1' in the transcript and to mRNA degradation by NMD and to global defect in VHL protein expression. ('defect', 'NegReg', (137, 143)) ('insertion', 'Var', (53, 62)) ('led to', 'Reg', (16, 22)) ('expression', 'MPA', (159, 169)) ('VHL', 'Gene', (147, 150)) ('VHL', 'Gene', (35, 38)) ('VHL', 'Gene', '7428', (147, 150)) ('mRNA degradation', 'MPA', (99, 115)) ('VHL', 'Gene', '7428', (35, 38)) 20040 31996412 In our large international study, we identified four new germline variants in E1' VHL gene and we classified two of them as pathogenic, representing 1.3% of 'VHL-like' cohort (1/76 patients) and 0.11% of 'PPGL' cohort (1/946 patients). ('patients', 'Species', '9606', (225, 233)) ("E1' VHL", 'Gene', '6080;7428', (78, 85)) ("E1' VHL", 'Gene', (78, 85)) ('variants', 'Var', (66, 74)) ('VHL', 'Gene', (82, 85)) ('VHL', 'Gene', (158, 161)) ('patients', 'Species', '9606', (181, 189)) ('VHL', 'Gene', '7428', (82, 85)) ('VHL', 'Gene', '7428', (158, 161)) 20043 31996412 Interestingly, multiple vertebral body haemangiomas are rare in VHL disease but have been described in patients with Chuvash polycythemia, a disease secondary to a recurrent germline biallelic mutation in VHL gene (c.598C>T, p.Arg200Trp). ('polycythemia', 'Phenotype', 'HP:0001901', (125, 137)) ('VHL', 'Gene', (205, 208)) ('VHL disease', 'Disease', 'MESH:D006623', (64, 75)) ('vertebral body haemangiomas', 'Disease', (24, 51)) ('p.Arg200Trp', 'Mutation', 'rs28940298', (225, 236)) ('VHL', 'Gene', '7428', (205, 208)) ('Chuvash polycythemia', 'Disease', 'MESH:C563918', (117, 137)) ('VHL', 'Gene', (64, 67)) ('vertebral body haemangiomas', 'Disease', 'MESH:C536543', (24, 51)) ('c.598C>T', 'Var', (215, 223)) ('p.Arg200Trp', 'Var', (225, 236)) ('c.598C>T', 'Mutation', 'rs28940298', (215, 223)) ('VHL', 'Gene', '7428', (64, 67)) ('VHL disease', 'Disease', (64, 75)) ('patients', 'Species', '9606', (103, 111)) ('Chuvash polycythemia', 'Disease', (117, 137)) 20044 31996412 Our data suggest incomplete penetrance of E1' VHL mutations, as it was previously described for the SDHA gene-another PPGL susceptibility gene- mutations that exhibit a relatively high allele frequency in gnomAD. ('SDHA', 'Gene', (100, 104)) ('mutations', 'Var', (50, 59)) ("E1' VHL", 'Gene', (42, 49)) ("E1' VHL", 'Gene', '6080;7428', (42, 49)) ('SDHA', 'Gene', '6389', (100, 104)) 20045 31996412 We have identified the same variant c.340+578C>T (rs139622356) in seven patients, but our tumour analyses were not able lead to the classification of this variant in a pathogenic variant. ('c.340+578C>T', 'Mutation', 'rs139622356', (36, 48)) ('rs139622356', 'Mutation', 'rs139622356', (50, 61)) ('c.340+578C>T', 'Var', (36, 48)) ('tumour', 'Phenotype', 'HP:0002664', (90, 96)) ('tumour', 'Disease', 'MESH:D009369', (90, 96)) ('tumour', 'Disease', (90, 96)) ('patients', 'Species', '9606', (72, 80)) 20046 31996412 Indeed in one tumour with this variant, we identified the E1-E1' mRNA which suggest that the variant is pathogenic. ('tumour', 'Disease', (14, 20)) ('tumour', 'Phenotype', 'HP:0002664', (14, 20)) ('tumour', 'Disease', 'MESH:D009369', (14, 20)) ('variant', 'Var', (31, 38)) ('variant', 'Var', (93, 100)) 20049 31996412 All these data suggest that this variant could be either a pathogenic variant that is not implicated in the PPGL of our patient because of the lack of LOH/second VHL mutation, or a modifier variant contributing potentially to an 8.5-fold risk (95% CI 4.4 to 14.3, p<0.0001) for development of PPGL or VHL tumours. ('VHL', 'Gene', (162, 165)) ('VHL', 'Gene', (301, 304)) ('VHL', 'Gene', '7428', (162, 165)) ('VHL tumours', 'Disease', (301, 312)) ('patient', 'Species', '9606', (120, 127)) ('VHL', 'Gene', '7428', (301, 304)) ('variant', 'Var', (33, 40)) ('VHL tumours', 'Disease', 'MESH:D006623', (301, 312)) ('PPGL', 'Disease', (293, 297)) ('tumour', 'Phenotype', 'HP:0002664', (305, 311)) ('tumours', 'Phenotype', 'HP:0002664', (305, 312)) 20051 31996412 Our study demonstrates that E1' VHL variants are rare events in 'VHL-like' and 'PPGL' patients, but nearly as frequent as the VHL mutation rate in exons 1 and 2 in patients with PPGL (in the molecular genetic laboratory of Hopital Europeen Georges Pompidou-Paris-France VHL mutation rate in exon 1 has been reported to be 0.74% (p=0.062), in exon 2: 0.18% (p=0.99) and in exon 3: 0.92% (p=0.0264), or as frequent as in exons of other PPGL susceptibility genes (for instance, the mutation rate in exon 1 of SDHD is 0.43%). ('mutation', 'Var', (274, 282)) ('VHL', 'Gene', (32, 35)) ('VHL', 'Gene', '7428', (65, 68)) ('SDHD', 'Gene', (506, 510)) ('VHL', 'Gene', (270, 273)) ('VHL', 'Gene', '7428', (32, 35)) ("E1' VHL", 'Gene', (28, 35)) ('VHL', 'Gene', '7428', (270, 273)) ("E1' VHL", 'Gene', '6080;7428', (28, 35)) ('VHL', 'Gene', (126, 129)) ('variants', 'Var', (36, 44)) ('patients', 'Species', '9606', (164, 172)) ('VHL', 'Gene', '7428', (126, 129)) ('VHL', 'Gene', (65, 68)) ('SDHD', 'Gene', '6392', (506, 510)) ('patients', 'Species', '9606', (86, 94)) 20053 31996412 As the identification of VHL variants has important implications for management and follow-up of patients and relatives, we suggest that E1' cryptic exon should be added to NGS diagnostic panels. ('VHL', 'Gene', '7428', (25, 28)) ('VHL', 'Gene', (25, 28)) ('variants', 'Var', (29, 37)) ('patients', 'Species', '9606', (97, 105)) 20054 31996412 Considering the genetic heterogeneity of PPGLs and the high rate of detectable driver mutations in these tumours, a low frequency of variants in any given new gene/exons is not unexpected. ('PPGLs', 'Gene', (41, 46)) ('mutations', 'Var', (86, 95)) ('tumours', 'Phenotype', 'HP:0002664', (105, 112)) ('tumours', 'Disease', 'MESH:D009369', (105, 112)) ('tumours', 'Disease', (105, 112)) ('tumour', 'Phenotype', 'HP:0002664', (105, 111)) 20056 32150977 Mutations in the SDHB subunit of succinate dehydrogenase (SDH) predispose patients to malignant disease with limited therapeutic options and poor prognosis. ('predispose', 'Reg', (63, 73)) ('SDH', 'Gene', (58, 61)) ('SDH', 'Gene', (17, 20)) ('patients', 'Species', '9606', (74, 82)) ('succinate', 'Chemical', 'MESH:D019802', (33, 42)) ('malignant disease', 'Disease', 'MESH:D009369', (86, 103)) ('Mutations', 'Var', (0, 9)) ('malignant disease', 'Disease', (86, 103)) ('SDH', 'Gene', '6390', (58, 61)) ('SDH', 'Gene', '6390', (17, 20)) 20067 32150977 In the past decade, enzymes of the tricarboxylic acid (TCA) cycle became the center of attention, because variants of genes encoding the subunits of succinate dehydrogenase enzyme, fumarate hydratase, malate dehydrogenase type 2, and aspartate aminotransferase enzymes have been associated with development of Pheo/PGL. ('variants', 'Var', (106, 114)) ('rat', 'Species', '10116', (193, 196)) ('succinate', 'Chemical', 'MESH:D019802', (149, 158)) ('TCA', 'Chemical', 'MESH:D014233', (55, 58)) ('associated with', 'Reg', (279, 294)) ('aspartate', 'Chemical', 'MESH:D001224', (234, 243)) ('fumarate', 'Chemical', 'MESH:D005650', (181, 189)) ('Pheo', 'Gene', '114618', (310, 314)) ('Pheo', 'Gene', (310, 314)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (35, 53)) ('rat', 'Species', '10116', (185, 188)) ('malate', 'Chemical', 'MESH:C030298', (201, 207)) 20068 32150977 The most widely accepted assumption is that defects of tricarboxylic acid (TCA) cycle may result in accumulation of certain, so called oncometabolites (such as succinate, fumarate, D-2-hydroxyglutarate) which contribute to cancer development. ('tricarboxylic', 'MPA', (55, 68)) ('TCA', 'Chemical', 'MESH:D014233', (75, 78)) ('cancer', 'Phenotype', 'HP:0002664', (223, 229)) ('succinate', 'Chemical', 'MESH:D019802', (160, 169)) ('accumulation', 'PosReg', (100, 112)) ('fumarate', 'Chemical', 'MESH:D005650', (171, 179)) ('defects', 'Var', (44, 51)) ('fumarate', 'MPA', (171, 179)) ('cancer', 'Disease', 'MESH:D009369', (223, 229)) ('D-2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (181, 201)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (55, 73)) ('cancer', 'Disease', (223, 229)) ('succinate', 'MPA', (160, 169)) 20071 32150977 In addition, chronic hypoxia (i.e., high altitudes) increases the incidence of sporadic PGLs and it has been demonstrated that it has a phenotype modifier effect on germline SDHB and SDHD mutant PGLs. ('increases', 'PosReg', (52, 61)) ('SDHD', 'Gene', '363061', (183, 187)) ('hypoxia', 'Disease', 'MESH:D000860', (21, 28)) ('hypoxia', 'Disease', (21, 28)) ('sporadic PGLs', 'Disease', (79, 92)) ('rat', 'Species', '10116', (116, 119)) ('SDHB', 'Gene', (174, 178)) ('SDHD', 'Gene', (183, 187)) ('mutant', 'Var', (188, 194)) 20072 32150977 Even though germline mutations of genes encoding for SDH subunits have been shown to predispose susceptibility for the development of familial Pheo/PGL, only mutations of the SDHB gene have been often associated with high rate of malignancy. ('malignancy', 'Disease', 'MESH:D009369', (230, 240)) ('Pheo', 'Gene', (143, 147)) ('SDH', 'Gene', (53, 56)) ('SDH', 'Gene', (175, 178)) ('malignancy', 'Disease', (230, 240)) ('SDH', 'Gene', '6390', (175, 178)) ('susceptibility', 'Reg', (96, 110)) ('rat', 'Species', '10116', (222, 225)) ('SDH', 'Gene', '6390', (53, 56)) ('associated', 'Reg', (201, 211)) ('mutations', 'Var', (158, 167)) ('Pheo', 'Gene', '114618', (143, 147)) ('mutations', 'Var', (21, 30)) 20073 32150977 Metastatic disease can be observed in more than 17-40% of patients with SDHB mutations, but the mechanisms leading to the malignant phenotype are still unclear. ('SDHB', 'Gene', (72, 76)) ('observed', 'Reg', (26, 34)) ('mutations', 'Var', (77, 86)) ('patients', 'Species', '9606', (58, 66)) ('Metastatic disease', 'Disease', (0, 18)) 20083 32150977 SDHx mutant tumors were shown to accumulate lower levels of glutamate, and SDHB knockout cells were shown to be more sensitive to GLS-1 inhibitors. ('lower', 'NegReg', (44, 49)) ('glutamate', 'Chemical', 'MESH:D018698', (60, 69)) ('SDH', 'Gene', (0, 3)) ('GLS-1', 'Gene', (130, 135)) ('accumulate', 'PosReg', (33, 43)) ('SDH', 'Gene', '6390', (75, 78)) ('GLS-1', 'Gene', '2744', (130, 135)) ('lower levels of glutamate', 'Phenotype', 'HP:0500150', (44, 69)) ('mutant', 'Var', (5, 11)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('tumors', 'Disease', (12, 18)) ('levels of glutamate', 'MPA', (50, 69)) ('tumors', 'Phenotype', 'HP:0002664', (12, 18)) ('tumors', 'Disease', 'MESH:D009369', (12, 18)) ('SDH', 'Gene', (75, 78)) ('SDH', 'Gene', '6390', (0, 3)) 20101 32150977 SDH activity was effectively reduced after siSdhb transfection compared to mock transfected and untreated cells (Figure 1A-D). ('SDH', 'Gene', (0, 3)) ('siSdhb', 'Disease', (43, 49)) ('reduced', 'NegReg', (29, 36)) ('siSdhb', 'Disease', 'None', (43, 49)) ('transfection', 'Var', (50, 62)) ('SDH', 'Gene', '6390', (0, 3)) 20102 32150977 siSdhb transfection showed similar potential in inhibiting SDH activity to atpenin, a potent and known SDH inhibitor (Figure 1D). ('SDH', 'Gene', '6390', (103, 106)) ('inhibiting', 'NegReg', (48, 58)) ('atpenin', 'Chemical', '-', (75, 82)) ('siSdhb', 'Disease', 'None', (0, 6)) ('SDH', 'Gene', (59, 62)) ('transfection', 'Var', (7, 19)) ('SDH', 'Gene', (103, 106)) ('siSdhb', 'Disease', (0, 6)) ('SDH', 'Gene', '6390', (59, 62)) 20103 32150977 Succinate/fumarate ratio increased significantly in cells transfected with siRNA against Sdhb compared to cells transfected with mock siRNA (p < 0.0001) (Figure 1G). ('siRNA', 'Var', (75, 80)) ('increased', 'PosReg', (25, 34)) ('Succinate', 'Chemical', 'MESH:D019802', (0, 9)) ('Sdhb', 'Gene', (89, 93)) ('fumarate', 'Chemical', 'MESH:D005650', (10, 18)) ('rat', 'Species', '10116', (19, 22)) ('Succinate/fumarate ratio', 'MPA', (0, 24)) ('rat', 'Species', '10116', (14, 17)) 20108 32150977 Sdhb knockdown significantly increased PC12 cells' viability after 72 h (p = 0.04) compared to mock transfected cells whereas significant differences were not observed at 24 and 48 h. (Figure 2A). ('knockdown', 'Var', (5, 14)) ('Sdhb', 'Gene', (0, 4)) ('PC12', 'CellLine', 'CVCL:0481', (39, 43)) ('increased', 'PosReg', (29, 38)) 20111 32150977 Cell proliferation of PC12 cells measured with SRB assay was not affected by SDH impairment either with Sdhb knockdown or itaconate/atpenin treatment (Figure 2D-F). ('PC12', 'CellLine', 'CVCL:0481', (22, 26)) ('rat', 'Species', '10116', (12, 15)) ('SDH impairment', 'Disease', (77, 91)) ('atpenin', 'Chemical', '-', (132, 139)) ('Sdhb', 'Gene', (104, 108)) ('SDH impairment', 'Disease', 'MESH:D060825', (77, 91)) ('knockdown', 'Var', (109, 118)) ('SRB', 'Chemical', 'MESH:C022027', (47, 50)) ('itaconate', 'Chemical', 'MESH:C005229', (122, 131)) ('Cell proliferation', 'CPA', (0, 18)) 20116 32150977 In PC12 cells metabolite concentrations measured after Sdhb knockdown clustered together to those measured after itaconate treatment (Figure 4B). ('itaconate', 'Chemical', 'MESH:C005229', (113, 122)) ('rat', 'Species', '10116', (32, 35)) ('Sdhb', 'Gene', (55, 59)) ('PC12', 'CellLine', 'CVCL:0481', (3, 7)) ('knockdown', 'Var', (60, 69)) ('metabolite concentrations', 'MPA', (14, 39)) 20118 32150977 Sdhb knockdown significantly decreased glutamate concentrations (p < 0.0001) (Figure 4C), while lactate did not show accumulation (Figure 4D and Table S1). ('glutamate', 'Chemical', 'MESH:D018698', (39, 48)) ('decreased glutamate', 'Phenotype', 'HP:0500150', (29, 48)) ('rat', 'Species', '10116', (56, 59)) ('decreased glutamate concentrations', 'Phenotype', 'HP:0500150', (29, 63)) ('knockdown', 'Var', (5, 14)) ('Sdhb', 'Gene', (0, 4)) ('glutamate concentrations', 'MPA', (39, 63)) ('lactate', 'Chemical', 'MESH:D019344', (96, 103)) ('decreased', 'NegReg', (29, 38)) 20121 32150977 Contrary to PC12 cells, glutamate (p = 0.004) and lactate (p = 0.013) concentrations significantly increased in HeLa cells treated with itaconic acid compared to vehicle treatment after 24 h incubation. ('PC12', 'CellLine', 'CVCL:0481', (12, 16)) ('rat', 'Species', '10116', (77, 80)) ('lactate', 'Chemical', 'MESH:D019344', (50, 57)) ('glutamate', 'Chemical', 'MESH:D018698', (24, 33)) ('HeLa', 'CellLine', 'CVCL:0030', (112, 116)) ('itaconic acid', 'Chemical', 'MESH:C005229', (136, 149)) ('increased', 'PosReg', (99, 108)) ('itaconic', 'Var', (136, 144)) 20127 32150977 A significant increase in GLS-1 expression after Sdhb knockout (fold change: 1.53 +- 0.3, p = 0.002) was observed in PC12 cells A significant increase in GLS-1 expression was observed after itaconate treatment of PC12 cells after 24 h (fold change: 1.2 +- 0.03, p = 0.015) and 48 h (fold change 1.48 +- 0.13, p = 0.002). ('expression', 'MPA', (160, 170)) ('increase', 'PosReg', (142, 150)) ('knockout', 'Var', (54, 62)) ('increase', 'PosReg', (14, 22)) ('PC12', 'CellLine', 'CVCL:0481', (213, 217)) ('Sdhb', 'Gene', (49, 53)) ('itaconate', 'Chemical', 'MESH:C005229', (190, 199)) ('GLS-1', 'Gene', '2744', (154, 159)) ('GLS-1', 'Gene', '2744', (26, 31)) ('PC12', 'CellLine', 'CVCL:0481', (117, 121)) ('GLS-1', 'Gene', (154, 159)) ('expression', 'MPA', (32, 42)) ('GLS-1', 'Gene', (26, 31)) 20145 32150977 In case of the benign sporadic samples, out of the four samples with low SDHB scores two were accompanied by high GLS-1 immunostaining scores (Table 1). ('scores', 'Var', (78, 84)) ('GLS-1', 'Gene', '2744', (114, 119)) ('GLS-1', 'Gene', (114, 119)) ('low', 'NegReg', (69, 72)) ('SDHB', 'Gene', (73, 77)) 20153 32150977 The effects of Sdhb knockdown were compared to mock transfected cells whereas the consequences of itaconate and atpenin treatment were compared to control (untreated) PC12 cells. ('PC12', 'CellLine', 'CVCL:0481', (167, 171)) ('atpenin', 'Chemical', '-', (112, 119)) ('knockdown', 'Var', (20, 29)) ('itaconate', 'Chemical', 'MESH:C005229', (98, 107)) ('Sdhb', 'Gene', (15, 19)) 20156 32150977 Compared to control PC12 cells, itaconate yielded a significantly higher basal respiration (p = 0.007) whereas Sdhb knockdown resulted in significantly lower basal respiration rate compared to mock transfected cells (p = 0.0079). ('rat', 'Species', '10116', (169, 172)) ('basal respiration rate', 'MPA', (158, 180)) ('rat', 'Species', '10116', (176, 179)) ('basal respiration', 'MPA', (73, 90)) ('rat', 'Species', '10116', (84, 87)) ('PC12', 'CellLine', 'CVCL:0481', (20, 24)) ('knockdown', 'Var', (116, 125)) ('lower', 'NegReg', (152, 157)) ('higher', 'PosReg', (66, 72)) ('Sdhb', 'Gene', (111, 115)) ('itaconate', 'Chemical', 'MESH:C005229', (32, 41)) 20160 32150977 BPTES treatment only had a significant effect on Sdhb silenced cells when their basal oxygen consumption was compared to the OCR after glutamine admission (p = 0.0079). ('glutamine', 'Chemical', 'MESH:D005973', (135, 144)) ('BPTES', 'Chemical', '-', (0, 5)) ('Sdhb', 'Gene', (49, 53)) ('oxygen', 'Chemical', 'MESH:D010100', (86, 92)) ('silenced', 'Var', (54, 62)) 20164 32150977 Itaconate treatment and siSdhb knockdown significantly increased maximal respiration (p = 0.0079). ('Itaconate', 'Chemical', 'MESH:C005229', (0, 9)) ('siSdhb', 'Disease', 'None', (24, 30)) ('increased', 'PosReg', (55, 64)) ('rat', 'Species', '10116', (78, 81)) ('maximal respiration', 'MPA', (65, 84)) ('siSdhb', 'Disease', (24, 30)) ('knockdown', 'Var', (31, 40)) 20170 32150977 A total of 40% of these neuro-endocrine tumors are inherited in an autosomal dominant manner due to mutations in one of the 17 Pheo/PGL-associated genes. ('mutations', 'Var', (100, 109)) ('neuro-endocrine tumors', 'Disease', 'MESH:D004700', (24, 46)) ('inherited', 'Reg', (51, 60)) ('neuro-endocrine tumors', 'Disease', (24, 46)) ('due to', 'Reg', (93, 99)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('Pheo', 'Gene', (127, 131)) ('tumors', 'Phenotype', 'HP:0002664', (40, 46)) ('Pheo', 'Gene', '114618', (127, 131)) 20172 32150977 Mutations of the SDHB gene represent a strong susceptibility for malignancy. ('malignancy', 'Disease', 'MESH:D009369', (65, 75)) ('malignancy', 'Disease', (65, 75)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (17, 21)) ('susceptibility', 'Reg', (46, 60)) 20173 32150977 The precise pathomechanism behind the SDHx mutations and especially the malignant potential of SDHB mutations is still unknown despite the several observations made through the last decades. ('mutations', 'Var', (100, 109)) ('SDH', 'Gene', '6390', (38, 41)) ('mutations', 'Var', (43, 52)) ('SDH', 'Gene', '6390', (95, 98)) ('SDH', 'Gene', (38, 41)) ('SDH', 'Gene', (95, 98)) 20174 32150977 Several novel approaches were introduced recently to address the lack of therapeutic options: the inhibition of glutathione synthesis was shown to contribute to the DNA damage as a result of the increased level of reactive oxygen species in SDHB mutant tumors. ('SDHB', 'Gene', (241, 245)) ('tumors', 'Disease', (253, 259)) ('tumors', 'Disease', 'MESH:D009369', (253, 259)) ('glutathione', 'Chemical', 'MESH:D005978', (112, 123)) ('tumors', 'Phenotype', 'HP:0002664', (253, 259)) ('inhibition', 'NegReg', (98, 108)) ('oxygen', 'Chemical', 'MESH:D010100', (223, 229)) ('tumor', 'Phenotype', 'HP:0002664', (253, 258)) ('mutant', 'Var', (246, 252)) ('level of reactive oxygen species', 'MPA', (205, 237)) ('increased', 'PosReg', (195, 204)) ('glutathione synthesis', 'MPA', (112, 133)) 20175 32150977 Inhibition of complex I made complex II impaired tumors more sensitive to DNA damaging chemotherapeutic agents while it has been also demonstrated that elevated succinate and fumarate levels suppress the homologous recombination DNA pathway, rendering these tumors vulnerable to poly(ADP)-ribose polymerase inhibitors. ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('fumarate', 'Chemical', 'MESH:D005650', (175, 183)) ('tumors', 'Disease', (49, 55)) ('rat', 'Species', '10116', (141, 144)) ('poly(ADP)', 'Chemical', '-', (279, 288)) ('tumors', 'Phenotype', 'HP:0002664', (258, 264)) ('suppress', 'NegReg', (191, 199)) ('elevated succinate', 'Phenotype', 'HP:0020149', (152, 170)) ('tumors', 'Disease', 'MESH:D009369', (49, 55)) ('homologous recombination DNA pathway', 'Pathway', (204, 240)) ('tumor', 'Phenotype', 'HP:0002664', (258, 263)) ('elevated', 'PosReg', (152, 160)) ('tumors', 'Disease', (258, 264)) ('sensitive', 'MPA', (61, 70)) ('II impaired tumors', 'Disease', (37, 55)) ('Inhibition', 'Var', (0, 10)) ('rat', 'Species', '10116', (179, 182)) ('II impaired tumors', 'Disease', 'MESH:D060825', (37, 55)) ('tumors', 'Phenotype', 'HP:0002664', (49, 55)) ('tumors', 'Disease', 'MESH:D009369', (258, 264)) ('succinate', 'Chemical', 'MESH:D019802', (161, 170)) 20178 32150977 The succinate accumulation in SDHx mutant tumors can inhibit the alpha-ketoglutarate-dependent prolyl hydroxylases, which have an important role in the degradation of HIF1alpha and HIF2alpha under normoxia. ('alpha-ketoglutarate-dependent', 'MPA', (65, 94)) ('HIF1alpha', 'Gene', (167, 176)) ('SDH', 'Gene', (30, 33)) ('inhibit', 'NegReg', (53, 60)) ('tumors', 'Disease', (42, 48)) ('tumors', 'Disease', 'MESH:D009369', (42, 48)) ('HIF2alpha', 'Gene', '29452', (181, 190)) ('succinate accumulation', 'MPA', (4, 26)) ('mutant', 'Var', (35, 41)) ('tumors', 'Phenotype', 'HP:0002664', (42, 48)) ('HIF2alpha', 'Gene', (181, 190)) ('HIF1alpha', 'Gene', '29560', (167, 176)) ('SDH', 'Gene', '6390', (30, 33)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) ('succinate', 'Chemical', 'MESH:D019802', (4, 13)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (65, 84)) 20179 32150977 Mutations in the SDHB subunit beside the HIF1alpha stabilization, shift the cellular metabolism towards reductive glutamine catabolism. ('glutamine', 'Chemical', 'MESH:D005973', (114, 123)) ('reductive glutamine catabolism', 'MPA', (104, 134)) ('cellular metabolism', 'MPA', (76, 95)) ('Mutations', 'Var', (0, 9)) ('HIF1alpha', 'Gene', (41, 50)) ('SDHB', 'Gene', (17, 21)) ('shift', 'Reg', (66, 71)) ('HIF1alpha', 'Gene', '29560', (41, 50)) 20180 32150977 reported that both loss of complex I and complex II activity are necessary to mimic the metabolic phenotype of SDH mutant tumors based on reductive glutamine metabolism, sole SDHA or SDHB inhibition failed to do so in their study. ('SDHA', 'Gene', '157074', (175, 179)) ('tumors', 'Disease', (122, 128)) ('tumors', 'Disease', 'MESH:D009369', (122, 128)) ('reductive glutamine metabolism', 'MPA', (138, 168)) ('glutamine', 'Chemical', 'MESH:D005973', (148, 157)) ('SDH', 'Gene', (175, 178)) ('SDH', 'Gene', '6390', (183, 186)) ('SDH', 'Gene', '6390', (111, 114)) ('mutant', 'Var', (115, 121)) ('SDH', 'Gene', (183, 186)) ('tumor', 'Phenotype', 'HP:0002664', (122, 127)) ('tumors', 'Phenotype', 'HP:0002664', (122, 128)) ('SDH', 'Gene', (111, 114)) ('SDH', 'Gene', '6390', (175, 178)) ('SDHA', 'Gene', (175, 179)) 20183 32150977 Increased succinate to fumarate ratio also characteristic for SDH mutant Pheo/PGLs. ('succinate to fumarate ratio', 'MPA', (10, 37)) ('SDH', 'Gene', '6390', (62, 65)) ('fumarate', 'Chemical', 'MESH:D005650', (23, 31)) ('rat', 'Species', '10116', (32, 35)) ('mutant', 'Var', (66, 72)) ('Pheo', 'Gene', '114618', (73, 77)) ('SDH', 'Gene', (62, 65)) ('Increased succinate', 'Phenotype', 'HP:0020149', (0, 19)) ('Pheo', 'Gene', (73, 77)) ('Increased', 'PosReg', (0, 9)) ('rat', 'Species', '10116', (27, 30)) ('succinate', 'Chemical', 'MESH:D019802', (10, 19)) 20188 32150977 Based on these data we assume that the impairment of SDH activity (either by itaconate or atpenin treatments or Sdhb knockdown) has a cell type-specific effect on the viability of cells. ('SDH', 'Gene', (53, 56)) ('atpenin', 'Chemical', '-', (90, 97)) ('Sdhb', 'Gene', (112, 116)) ('SDH', 'Gene', '6390', (53, 56)) ('activity', 'MPA', (57, 65)) ('itaconate', 'Chemical', 'MESH:C005229', (77, 86)) ('knockdown', 'Var', (117, 126)) 20193 32150977 In general, inhibition of SDH shifts cellular metabolism to anaerobic glycolysis, and administration of itaconate is also associated with lactate accumulation. ('associated', 'Reg', (122, 132)) ('rat', 'Species', '10116', (94, 97)) ('inhibition', 'Var', (12, 22)) ('itaconate', 'Chemical', 'MESH:C005229', (104, 113)) ('lactate accumulation', 'MPA', (138, 158)) ('SDH', 'Gene', '6390', (26, 29)) ('shifts', 'Reg', (30, 36)) ('lactate', 'Chemical', 'MESH:D019344', (138, 145)) ('cellular metabolism', 'MPA', (37, 56)) ('SDH', 'Gene', (26, 29)) 20194 32150977 However, in contrary to HeLa and H295R cell lines, the expected increase in lactate concentrations was absent in PC12 cells after itaconate treatment and after Sdhb knockout. ('lactate concentrations', 'MPA', (76, 98)) ('PC12', 'CellLine', 'CVCL:0481', (113, 117)) ('lactate', 'Chemical', 'MESH:D019344', (76, 83)) ('absent', 'NegReg', (103, 109)) ('rat', 'Species', '10116', (91, 94)) ('itaconate', 'Chemical', 'MESH:C005229', (130, 139)) ('increase', 'PosReg', (64, 72)) ('HeLa', 'CellLine', 'CVCL:0030', (24, 28)) ('knockout', 'Var', (165, 173)) ('Sdhb', 'Gene', (160, 164)) ('H295R', 'CellLine', 'CVCL:0458', (33, 38)) 20195 32150977 Sdhb knockdown significantly decreased glutamate concentrations which is in line with the data demonstrating that SDHx mutant tumors also accumulate lower levels of glutamate, and SDHB mutation associated with increased glutamine metabolism. ('decreased glutamate', 'Phenotype', 'HP:0500150', (29, 48)) ('increased glutamine', 'Phenotype', 'HP:0003217', (210, 229)) ('tumors', 'Phenotype', 'HP:0002664', (126, 132)) ('SDH', 'Gene', (114, 117)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('glutamate', 'Chemical', 'MESH:D018698', (39, 48)) ('glutamate', 'Chemical', 'MESH:D018698', (165, 174)) ('tumors', 'Disease', (126, 132)) ('rat', 'Species', '10116', (56, 59)) ('levels of glutamate', 'MPA', (155, 174)) ('mutation', 'Var', (185, 193)) ('rat', 'Species', '10116', (102, 105)) ('mutant', 'Var', (119, 125)) ('tumors', 'Disease', 'MESH:D009369', (126, 132)) ('accumulate', 'PosReg', (138, 148)) ('SDH', 'Gene', '6390', (180, 183)) ('increased', 'PosReg', (210, 219)) ('decreased glutamate concentrations', 'Phenotype', 'HP:0500150', (29, 63)) ('lower levels of glutamate', 'Phenotype', 'HP:0500150', (149, 174)) ('decreased', 'NegReg', (29, 38)) ('glutamine', 'Chemical', 'MESH:D005973', (220, 229)) ('SDH', 'Gene', '6390', (114, 117)) ('glutamate concentrations', 'MPA', (39, 63)) ('lower', 'NegReg', (149, 154)) ('SDH', 'Gene', (180, 183)) ('glutamine metabolism', 'MPA', (220, 240)) 20196 32150977 In addition, glutamine was shown to be the main source in SDHB-mutated UOK269 cells and this metabolite linked HIF-1alpha stabilization and DNA methylator phenotype. ('UOK269', 'CellLine', 'CVCL:B686', (71, 77)) ('HIF-1alpha', 'Gene', '29560', (111, 121)) ('HIF-1alpha', 'Gene', (111, 121)) ('SDHB-mutated', 'Gene', (58, 70)) ('glutamine', 'Chemical', 'MESH:D005973', (13, 22)) ('SDHB-mutated', 'Var', (58, 70)) 20200 32150977 Itaconate but not atpenin had the same effect, it increased the basal respiration of PC12 cells whereas it did not have a significant impact on lactate concentration further supporting its capability to serve as a model for Sdhb mutant Pheo/PGLs. ('Pheo', 'Gene', '114618', (236, 240)) ('basal', 'CPA', (64, 69)) ('Itaconate', 'Chemical', 'MESH:C005229', (0, 9)) ('atpenin', 'Chemical', '-', (18, 25)) ('PC12', 'CellLine', 'CVCL:0481', (85, 89)) ('rat', 'Species', '10116', (75, 78)) ('increased', 'PosReg', (50, 59)) ('Sdhb', 'Gene', (224, 228)) ('lactate', 'Chemical', 'MESH:D019344', (144, 151)) ('mutant', 'Var', (229, 235)) ('rat', 'Species', '10116', (159, 162)) ('Pheo', 'Gene', (236, 240)) 20203 32150977 We may hypothesize that in SDH deficient cells a rapid metabolic adaptation occurs which allows these cells to survive by either shifting its metabolism to the use of the alternative fuel glutamine or going into a reversible, more quiescent state. ('metabolism', 'MPA', (142, 152)) ('SDH', 'Gene', (27, 30)) ('deficient', 'Var', (31, 40)) ('glutamine', 'Chemical', 'MESH:D005973', (188, 197)) ('SDH', 'Gene', '6390', (27, 30)) 20204 32150977 Glutamate has an extensive role in cell metabolism and disruption of the TCA cycle makes the cells more dependent on reductive carboxylation of glutamine instead of the oxidative metabolism of the TCA cycle. ('TCA', 'Chemical', 'MESH:D014233', (73, 76)) ('Glutamate', 'Chemical', 'MESH:D018698', (0, 9)) ('glutamine', 'Chemical', 'MESH:D005973', (144, 153)) ('reductive carboxylation', 'MPA', (117, 140)) ('disruption', 'Var', (55, 65)) ('TCA', 'Chemical', 'MESH:D014233', (197, 200)) ('oxidative metabolism', 'MPA', (169, 189)) 20207 32150977 PC12 cells exhibited significantly increased GLS-1 expression upon Sdhb knockdown and SDH inhibition with itaconate too. ('inhibition', 'NegReg', (90, 100)) ('GLS-1', 'Gene', '2744', (45, 50)) ('increased', 'PosReg', (35, 44)) ('SDH', 'Gene', '6390', (86, 89)) ('PC12', 'CellLine', 'CVCL:0481', (0, 4)) ('GLS-1', 'Gene', (45, 50)) ('SDH', 'Gene', (86, 89)) ('itaconate', 'Chemical', 'MESH:C005229', (106, 115)) ('expression', 'MPA', (51, 61)) ('knockdown', 'Var', (72, 81)) ('Sdhb', 'Gene', (67, 71)) 20213 32150977 These results indicate that SDH inhibition exhibits cell line and inhibitory method specific consequences and the dynamism of metabolic changes varies among cell types, but in PC12 cells both Sdhb knockdown and itaconate treatment increased its expression suggesting that these cells might be dependent on this enzyme. ('Sdhb', 'Gene', (192, 196)) ('SDH', 'Gene', '6390', (28, 31)) ('increased', 'PosReg', (231, 240)) ('knockdown', 'Var', (197, 206)) ('SDH', 'Gene', (28, 31)) ('itaconate', 'Chemical', 'MESH:C005229', (211, 220)) ('expression', 'MPA', (245, 255)) ('PC12', 'CellLine', 'CVCL:0481', (176, 180)) 20231 32150977 The heterogeneous phenotype associated with Sdhb mutations is highlighted in an in vivo model of Sdhb mutation developed in Caenorhabditis elegans, where the deleted mutant arrested in development, while the point mutant form was viable and it presented only infertility. ('Caenorhabditis elegans', 'Species', '6239', (124, 146)) ('mutation', 'Var', (102, 110)) ('infertility', 'Disease', 'MESH:D007247', (259, 270)) ('infertility', 'Phenotype', 'HP:0000789', (259, 270)) ('Sdhb', 'Gene', (97, 101)) ('infertility', 'Disease', (259, 270)) 20232 32150977 In conclusion, we assume that GLS-1 contributes to SDHB-mutant malignant tumor growth and we presume that the evaluation of GLS-1 expression before therapy might yield valuable information for the management of the disease. ('SDHB-mutant', 'Gene', (51, 62)) ('SDHB-mutant', 'Var', (51, 62)) ('malignant tumor', 'Disease', (63, 78)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('GLS-1', 'Gene', '2744', (124, 129)) ('malignant tumor', 'Disease', 'MESH:D009369', (63, 78)) ('GLS-1', 'Gene', (124, 129)) ('GLS-1', 'Gene', '2744', (30, 35)) ('GLS-1', 'Gene', (30, 35)) 20239 32150977 HeLa cells (human cervix carcinoma cell line) were grown in 75-cm2 flasks in Dulbecco's modified Eagle medium/HamF12 (DMEM/F12) (#11330032, Thermo Fisher Scientific, Waltham, MA, USA) containing 10% FBS (#10270106, Thermo Fisher Scientific, Waltham, MA, USA) and 1% penicillin-streptomycin (LM-A4118/100, Biosera, Nouille, France). ('#11330032', 'Var', (129, 138)) ('cervix carcinoma', 'Disease', 'MESH:D002583', (18, 34)) ('penicillin', 'Chemical', 'MESH:D010406', (266, 276)) ('#10270106', 'Var', (204, 213)) ('F12', 'Chemical', 'MESH:C007782', (113, 116)) ('carcinoma', 'Phenotype', 'HP:0030731', (25, 34)) ('cervix carcinoma', 'Disease', (18, 34)) ('F12', 'Chemical', 'MESH:C007782', (123, 126)) ('cervix carcinoma', 'Phenotype', 'HP:0030079', (18, 34)) ('streptomycin', 'Chemical', 'MESH:D013307', (277, 289)) ('human', 'Species', '9606', (12, 17)) ('DMEM', 'Chemical', '-', (118, 122)) ('HeLa', 'CellLine', 'CVCL:0030', (0, 4)) ("Dulbecco's modified Eagle medium", 'Chemical', '-', (77, 109)) 20240 32150977 H295R cells (human adrenocortical carcinoma) were grown in 75-cm2 flasks in Dulbecco's modified Eagle medium/HamF12 (DMEM/F12) containing HEPES buffer, l-glutamine, and pyridoxine HCl (#11330032, Thermo Fisher Scientific, Waltham, MA, USA). ('carcinoma', 'Phenotype', 'HP:0030731', (34, 43)) ('pyridoxine HCl', 'Chemical', 'MESH:D011736', (169, 183)) ('human', 'Species', '9606', (13, 18)) ('carcinoma', 'Disease', (34, 43)) ('H295R', 'CellLine', 'CVCL:0458', (0, 5)) ('carcinoma', 'Disease', 'MESH:D009369', (34, 43)) ('DMEM', 'Chemical', '-', (117, 121)) ('#11330032', 'Var', (185, 194)) ('HEPES', 'Chemical', 'MESH:D006531', (138, 143)) ("Dulbecco's modified Eagle medium", 'Chemical', '-', (76, 108)) ('F12', 'Chemical', 'MESH:C007782', (112, 115)) ('F12', 'Chemical', 'MESH:C007782', (122, 125)) ('l-glutamine', 'Chemical', 'MESH:D005973', (152, 163)) ('adrenocortical carcinoma', 'Phenotype', 'HP:0006744', (19, 43)) 20241 32150977 Additional supplements were added to the medium, including 0.00625 mg/mL insulin (#I9278, Sigma, St. Louis, MO, USA), 0,00625 mg/mL human transferrin (#T5391, Sigma, St. Louis, MO, USA), and 6.25 ng/mL selenous acid (#S9133, Sigma, St. Louis, MO, USA) 1.25 mg/mL bovine serum albumine (#A9647, Sigma, St. Louis, MO, USA), 2.5% nu-serum (Zenon Bio Kft. ('transferrin', 'Gene', '7018', (138, 149)) ('serum albumin', 'Gene', '24186', (270, 283)) ('transferrin', 'Gene', (138, 149)) ('human', 'Species', '9606', (132, 137)) ('serum albumin', 'Gene', (270, 283)) ('#A9647', 'Var', (286, 292)) 20245 32150977 Total protein was separated by 10-15% SDS polyacrylamide gel electrophoresis, transferred to a PVDF membrane, and incubated overnight with primary antibody against SDHB (5 mug/mL; anti-SDHB, ab14714, Abcam, Cambridge, United Kingdom). ('rat', 'Species', '10116', (22, 25)) ('anti-SDHB', 'Var', (180, 189)) ('polyacrylamide', 'Chemical', 'MESH:C016679', (42, 56)) ('SDS', 'Chemical', 'MESH:D012967', (38, 41)) ('SDHB', 'Gene', (164, 168)) ('PVDF', 'Chemical', 'MESH:C024865', (95, 99)) 20311 32150977 In summary, we demonstrated for the first time that SDH inhibition either with itaconate, atpenin, or SDHB knockdown had a positive effect on cell viability of chromaffin cells but not on other cell lines which may be related to the glutamine/glutamate metabolism. ('knockdown', 'Var', (107, 116)) ('inhibition', 'NegReg', (56, 66)) ('atpenin', 'Chemical', '-', (90, 97)) ('SDH', 'Gene', (102, 105)) ('itaconate', 'Chemical', 'MESH:C005229', (79, 88)) ('SDH', 'Gene', '6390', (52, 55)) ('rat', 'Species', '10116', (22, 25)) ('cell viability of chromaffin cells', 'CPA', (142, 176)) ('SDH', 'Gene', (52, 55)) ('glutamine', 'Chemical', 'MESH:D005973', (233, 242)) ('glutamate', 'Chemical', 'MESH:D018698', (243, 252)) ('SDH', 'Gene', '6390', (102, 105)) ('chromaffin', 'Chemical', '-', (160, 170)) 20313 32150977 SDHB expression in some SDHB-mutant Pheo/PGL tissues suggests that tumor heterogeneity occurs even in SDHB-associated tumors. ('tumor', 'Disease', 'MESH:D009369', (118, 123)) ('tumor', 'Disease', 'MESH:D009369', (67, 72)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('tumor', 'Phenotype', 'HP:0002664', (67, 72)) ('tumors', 'Phenotype', 'HP:0002664', (118, 124)) ('tumor', 'Disease', (118, 123)) ('Pheo', 'Gene', '114618', (36, 40)) ('tumor', 'Disease', (67, 72)) ('tumors', 'Disease', (118, 124)) ('Pheo', 'Gene', (36, 40)) ('SDHB-mutant', 'Gene', (24, 35)) ('SDHB', 'Gene', (0, 4)) ('SDHB-mutant', 'Var', (24, 35)) ('tumors', 'Disease', 'MESH:D009369', (118, 124)) 20315 32150977 All together these data suggest that some SDH activity is still maintained in these tumors, therefore knockdown of SDHB by siRNA provides a feasible model for the disease. ('SDH', 'Gene', '6390', (42, 45)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('SDH', 'Gene', '6390', (115, 118)) ('knockdown', 'Var', (102, 111)) ('SDH', 'Gene', (42, 45)) ('tumors', 'Disease', 'MESH:D009369', (84, 90)) ('tumors', 'Disease', (84, 90)) ('SDH', 'Gene', (115, 118)) ('tumors', 'Phenotype', 'HP:0002664', (84, 90)) 20321 32150977 The following are available online at , Figure S1: SDHB knockdown by Sdhb targeting siRNAs, Figure S2: Succinate to fumarate ratios in cell lines after itaconate or vehicle treatment, Figure S3: Normalized succinate levels after atpenin vs. vehicle treatment: veh: vehicle; suc: succinate, Figure S4: HeatMap, Table S1: Intracellular normalized concentrations of all measured metabolites (micromol/microg), Table S2: Intracellular normalized concentrations of all measured metabolites (micromol/microg). ('succinate', 'Chemical', 'MESH:D019802', (206, 215)) ('rat', 'Species', '10116', (125, 128)) ('rat', 'Species', '10116', (352, 355)) ('fumarate', 'Chemical', 'MESH:D005650', (116, 124)) ('succinate', 'Chemical', 'MESH:D019802', (279, 288)) ('rat', 'Species', '10116', (449, 452)) ('atpenin', 'Chemical', '-', (229, 236)) ('itaconate', 'Chemical', 'MESH:C005229', (152, 161)) ('Sdhb', 'Gene', (69, 73)) ('Succinate', 'Chemical', 'MESH:D019802', (103, 112)) ('rat', 'Species', '10116', (120, 123)) ('SDHB', 'Gene', (51, 55)) ('knockdown', 'Var', (56, 65)) 20324 32150977 ; performed clinical evaluation of patients: B.S., I.K., J.P., L.C., M.L., A.P. ('J.P.', 'Disease', (57, 61)) ('L.C.', 'Disease', (63, 67)) ('M.L.', 'Var', (69, 73)) ('patients', 'Species', '9606', (35, 43)) 20334 31261748 Subgroup analysis showed Ki-67 <15% associated with longer OS (p = 0.013) and PFS (p = 0.005). ('OS', 'Chemical', '-', (59, 61)) ('<15%', 'Var', (31, 35)) ('Ki-67 <15%', 'Var', (25, 35)) ('PFS', 'Disease', (78, 81)) ('associated', 'Reg', (36, 46)) ('longer OS', 'Disease', (52, 61)) ('Ki-67', 'Chemical', '-', (25, 30)) 20345 31261748 Furthermore, encouraging results of PRRT have been shown in small cohorts of PCC/PGL patients treated with 90Y- DOTATOC and with 177Lu-DOTATATE. ('90Y- DOTATOC', 'Var', (107, 119)) ('PCC/PGL', 'Disease', (77, 84)) ('TOC', 'Chemical', '-', (116, 119)) ('patients', 'Species', '9606', (85, 93)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (129, 143)) 20395 31261748 Patient 20 had an SDHD mutation, whereas the other patient was not tested for a genetic profile. ('mutation', 'Var', (23, 31)) ('patient', 'Species', '9606', (51, 58)) ('SDHD', 'Gene', (18, 22)) ('SDHD', 'Gene', '6392', (18, 22)) ('Patient', 'Species', '9606', (0, 7)) 20398 31261748 Ki-67 <15% compared to Ki-67 >=15% (p = 0.013) and PRRT received as first-line therapy compared to PPRT received because of tumor progression (p = 0.041) were associated with longer OS (Figure 2A,B). ('tumor', 'Disease', 'MESH:D009369', (124, 129)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('Ki-67 >=15%', 'Var', (23, 34)) ('OS', 'Chemical', '-', (182, 184)) ('Ki-67', 'Chemical', '-', (0, 5)) ('tumor', 'Disease', (124, 129)) ('Ki-67 <15%', 'Var', (0, 10)) ('longer OS', 'Disease', (175, 184)) ('PRRT', 'Var', (51, 55)) ('Ki-67', 'Chemical', '-', (23, 28)) 20401 31261748 Ki-67 <15% (p = 0.005) was associated with longer PFS, whereas PRRT received as first-line therapy, tumor type, visual response on scintigraphy (>=50%), biochemical response, number of cycles, administered activity, and previous therapies (surgery, radiotherapy, chemotherapy, 131I-MIBG) were all factors unrelated to PFS. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('<15%', 'Var', (6, 10)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (277, 286)) ('tumor', 'Disease', (100, 105)) ('Ki-67', 'Chemical', '-', (0, 5)) ('PFS', 'Disease', (50, 53)) ('Ki-67 <15%', 'Var', (0, 10)) ('tumor', 'Disease', 'MESH:D009369', (100, 105)) 20417 31261748 With 177Lu-DOTATATE, we experienced no kidney toxicity and only grade 1 (n = 10) and 2 (n = 6) hematological toxicity. ('kidney toxicity', 'Disease', 'MESH:D007674', (39, 54)) ('hematological toxicity', 'Disease', 'MESH:D006402', (95, 117)) ('177Lu-DOTATATE', 'Var', (5, 19)) ('kidney toxicity', 'Disease', (39, 54)) ('hematological toxicity', 'Disease', (95, 117)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (5, 19)) 20419 31261748 Additionally, Kong et al., who in half of their patients combined 177Lu-DOTATATE with fluorouracil, reported mainly grade 2 lymphopenia. ('lymphopenia', 'Disease', (124, 135)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (66, 80)) ('lymphopenia', 'Phenotype', 'HP:0001888', (124, 135)) ('lymphopenia', 'Disease', 'MESH:D008231', (124, 135)) ('patients', 'Species', '9606', (48, 56)) ('177Lu-DOTATATE', 'Var', (66, 80)) ('fluorouracil', 'Chemical', 'MESH:D005472', (86, 98)) 20433 31261748 With 90Y-DOTATOC, biochemical responses were reported in 2/11 (18%) and 4/28 (14%) PCC and PGL patients, respectively. ('biochemical', 'MPA', (18, 29)) ('TOC', 'Chemical', '-', (13, 16)) ('patients', 'Species', '9606', (95, 103)) ('90Y-DOTATOC', 'Var', (5, 16)) ('PCC', 'Disease', (83, 86)) 20442 31261748 With 177Lu/90Y-DOTATATE/TOC therapy, the tumors need to show sufficient somatostatin receptor expression on imaging, usually Krenning grade 3 or 4 (higher than that of the liver) or at lease grade 2 (similar to that of the liver) in order to be eligible for PRRT. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('tumors', 'Phenotype', 'HP:0002664', (41, 47)) ('tumors', 'Disease', (41, 47)) ('somatostatin', 'MPA', (72, 84)) ('tumors', 'Disease', 'MESH:D009369', (41, 47)) ('TOC', 'Chemical', '-', (24, 27)) ('177Lu/90Y-DOTATATE/TOC', 'Var', (5, 27)) ('expression', 'MPA', (94, 104)) ('DOTATATE', 'Chemical', '-', (15, 23)) ('higher', 'PosReg', (148, 154)) 20446 31261748 The sensitivity of 123I-MIBG scintigraphy is particularly low in head and neck PGLs (HNPGL) (18-50%). ('123I-MIBG', 'Chemical', 'MESH:D019797', (19, 28)) ('123I-MIBG', 'Var', (19, 28)) ('low', 'NegReg', (58, 61)) 20453 31261748 Interestingly, we found such a correlation and Ki-67 >=15% was shown to be a predictor for worse OS and PFS. ('Ki-67', 'Chemical', '-', (47, 52)) ('PFS', 'Disease', (104, 107)) ('Ki-67 >=15%', 'Var', (47, 58)) ('>=15%', 'Var', (53, 58)) ('worse OS', 'Disease', (91, 99)) ('OS', 'Chemical', '-', (97, 99)) 20455 31261748 We were however unable to show any predictive value for tumor type (PCC or PGL), visual response on scintigraphy, or previous therapies (surgery, radiotherapy, chemotherapy, 131I-MIBG), which were all factors unrelated to OS and PFS. ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (174, 183)) ('tumor', 'Disease', (56, 61)) ('131I-MIBG', 'Var', (174, 183)) ('OS', 'Chemical', '-', (222, 224)) ('tumor', 'Disease', 'MESH:D009369', (56, 61)) 20467 31261748 Inclusion criteria for PRRT were patients with pheochromocytoma or paraganglioma confirmed by histopathological examination, and a tumor uptake higher than that of the normal liver (Krenning scores 3 and 4) on somatostatin receptor scintigraphy (SRS), life expectancy > 3 months, white blood cell count (WBC) > 3.0 x 109/L, platelet count > 100 x 109/L, bilirubin < 40 micromol /L, albumin > 25 g/L, ASAT and ALAT less than 5 times upper limit, creatinine < 110 micromol/L or, if higher, GFR (cystatin-C) > 50 mL/min/1.73 m2. ('cystatin-C', 'Gene', (493, 503)) ('ASAT', 'Gene', (400, 404)) ('platelet', 'MPA', (324, 332)) ('pheochromocytoma', 'Disease', (47, 63)) ('tumor', 'Disease', (131, 136)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (47, 63)) ('ALAT', 'Disease', (409, 413)) ('less', 'NegReg', (414, 418)) ('tumor', 'Disease', 'MESH:D009369', (131, 136)) ('paraganglioma', 'Disease', (67, 80)) ('bilirubin', 'MPA', (354, 363)) ('paraganglioma', 'Disease', 'MESH:D010235', (67, 80)) ('albumin', 'MPA', (382, 389)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('creatinine', 'MPA', (445, 455)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) ('GFR', 'Gene', (488, 491)) ('patients', 'Species', '9606', (33, 41)) ('GFR', 'Gene', '9771', (488, 491)) ('cystatin-C', 'Gene', '1471', (493, 503)) ('> 25 g/L', 'Var', (390, 398)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (47, 63)) ('creatinine', 'Chemical', 'MESH:D003404', (445, 455)) ('SRS', 'Disease', 'MESH:C536678', (246, 249)) ('> 100 x', 'Var', (339, 346)) ('SRS', 'Disease', (246, 249)) ('ASAT', 'Gene', '22', (400, 404)) ('ALAT', 'Disease', 'None', (409, 413)) 20489 31261748 In conclusion, PRRT with 177Lu-DOTATATE was associated with a favorable outcome and low toxicity. ('177Lu-DOTATATE', 'Var', (25, 39)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (25, 39)) ('low toxicity', 'Disease', (84, 96)) ('low toxicity', 'Disease', 'MESH:D009800', (84, 96)) 20492 31308404 SDHC epi-mutation testing in gastrointestinal stromal tumours and related tumours in clinical practice The enzyme succinate dehydrogenase (SDH) functions in the citric acid cycle and loss of function predisposes to the development of phaeochromocytoma/paraganglioma (PPGL), wild type gastrointestinal stromal tumour (wtGIST) and renal cell carcinoma. ('phaeochromocytoma/paraganglioma', 'Disease', (234, 265)) ('renal cell carcinoma', 'Disease', (329, 349)) ('phaeochromocytoma/paraganglioma', 'Disease', 'MESH:D010235', (234, 265)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (329, 349)) ('tumours', 'Disease', (74, 81)) ('glioma', 'Phenotype', 'HP:0009733', (259, 265)) ('succinate dehydrogenase', 'Gene', (114, 137)) ('SDH', 'Gene', '6390', (0, 3)) ('gastrointestinal stromal tumours', 'Disease', 'MESH:D046152', (29, 61)) ('SDH', 'Gene', (139, 142)) ('tumours', 'Phenotype', 'HP:0002664', (74, 81)) ('tumours', 'Disease', 'MESH:D009369', (74, 81)) ('SDHC', 'Gene', '6391', (0, 4)) ('gastrointestinal stromal tumour', 'Phenotype', 'HP:0100723', (29, 60)) ('carcinoma', 'Phenotype', 'HP:0030731', (340, 349)) ('type gastrointestinal stromal tumour', 'Disease', 'MESH:D046152', (279, 315)) ('tumour', 'Phenotype', 'HP:0002664', (74, 80)) ('gastrointestinal stromal tumour', 'Phenotype', 'HP:0100723', (284, 315)) ('paraganglioma', 'Phenotype', 'HP:0002668', (252, 265)) ('SDH', 'Gene', (0, 3)) ('tumours', 'Disease', (54, 61)) ('succinate dehydrogenase', 'Gene', '6390', (114, 137)) ('type gastrointestinal stromal tumour', 'Disease', (279, 315)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (329, 349)) ('tumours', 'Phenotype', 'HP:0002664', (54, 61)) ('gastrointestinal stromal tumours', 'Disease', (29, 61)) ('loss', 'Var', (183, 187)) ('SDHC', 'Gene', (0, 4)) ('tumours', 'Disease', 'MESH:D009369', (54, 61)) ('tumour', 'Phenotype', 'HP:0002664', (309, 315)) ('SDH', 'Gene', '6390', (139, 142)) ('citric acid', 'Chemical', 'MESH:D019343', (161, 172)) ('tumour', 'Phenotype', 'HP:0002664', (54, 60)) 20493 31308404 SDH-deficient tumours are most commonly associated with a germline SDH subunit gene (SDHA/B/C/D) mutation but can also be associated with epigenetic silencing of the SDHC gene. ('SDH-deficient tumours', 'Disease', 'MESH:D009369', (0, 21)) ('tumour', 'Phenotype', 'HP:0002664', (14, 20)) ('associated', 'Reg', (40, 50)) ('SDH', 'Gene', '6390', (0, 3)) ('SDH', 'Gene', '6390', (166, 169)) ('SDH', 'Gene', '6390', (85, 88)) ('mutation', 'Var', (97, 105)) ('SDHC', 'Gene', '6391', (166, 170)) ('SDH', 'Gene', (0, 3)) ('SDH', 'Gene', '6390', (67, 70)) ('epigenetic silencing', 'Var', (138, 158)) ('SDH-deficient tumours', 'Disease', (0, 21)) ('SDH', 'Gene', (166, 169)) ('associated', 'Reg', (122, 132)) ('SDHA', 'Gene', (85, 89)) ('SDH', 'Gene', (85, 88)) ('tumours', 'Phenotype', 'HP:0002664', (14, 21)) ('SDHA', 'Gene', '6389', (85, 89)) ('SDHC', 'Gene', (166, 170)) ('SDH', 'Gene', (67, 70)) 20495 31308404 The objective of this study was to investigate the indications for and the optimum diagnostic pathways for the detection of SDHC epimutations in clinical practice. ('epimutations', 'Var', (129, 141)) ('SDHC', 'Gene', '6391', (124, 128)) ('SDHC', 'Gene', (124, 128)) 20497 31308404 SDHC promoter methylation was identified in 6 (18.7%) tumours. ('SDHC', 'Gene', (0, 4)) ('tumours', 'Disease', 'MESH:D009369', (54, 61)) ('tumours', 'Disease', (54, 61)) ('SDHC', 'Gene', '6391', (0, 4)) ('methylation', 'Var', (14, 25)) ('tumour', 'Phenotype', 'HP:0002664', (54, 60)) ('tumours', 'Phenotype', 'HP:0002664', (54, 61)) 20498 31308404 All 6 SDHC epimutation cases presented with SDH deficient wtGIST and 3/6 cases had multiple primary tumours. ('SDH', 'Gene', (44, 47)) ('SDHC', 'Gene', (6, 10)) ('SDH', 'Gene', (6, 9)) ('multiple primary tumours', 'Disease', 'MESH:D009378', (83, 107)) ('tumour', 'Phenotype', 'HP:0002664', (100, 106)) ('SDHC', 'Gene', '6391', (6, 10)) ('SDH', 'Gene', '6390', (44, 47)) ('presented with', 'Reg', (29, 43)) ('tumours', 'Phenotype', 'HP:0002664', (100, 107)) ('multiple primary tumours', 'Disease', (83, 107)) ('epimutation', 'Var', (11, 22)) ('SDH', 'Gene', '6390', (6, 9)) 20500 31308404 Whole genome sequencing of germline DNA from three wtGIST cases with an SDHC epimutation, did not reveal any causative sequence anomalies. ('epimutation', 'Var', (77, 88)) ('SDHC', 'Gene', '6391', (72, 76)) ('SDHC', 'Gene', (72, 76)) 20501 31308404 Herein, we recommend a diagnostic workflow for the detection of an SDHC epimutation in a service setting. ('SDHC', 'Gene', '6391', (67, 71)) ('SDHC', 'Gene', (67, 71)) ('epimutation', 'Var', (72, 83)) 20504 31308404 Biallelic inactivation of one of the four SDH subunit genes (SDHA, SDHB, SDHC, SDHD) is the most common mechanism causing SDH deficient (dSDH) tumours. ('SDH', 'Gene', '6390', (42, 45)) ('SDH', 'Gene', '6390', (73, 76)) ('SDH', 'Gene', (61, 64)) ('SDHC', 'Gene', '6391', (73, 77)) ('SDH', 'Gene', (138, 141)) ('SDHD', 'Gene', '6392', (79, 83)) ('SDH', 'Gene', '6390', (79, 82)) ('SDH', 'Gene', (122, 125)) ('SDH', 'Gene', '6390', (122, 125)) ('SDH', 'Gene', (42, 45)) ('SDH', 'Gene', (73, 76)) ('SDHD', 'Gene', (79, 83)) ('SDHB', 'Gene', '6390', (67, 71)) ('SDH deficient (dSDH) tumours', 'Disease', 'MESH:D009369', (122, 150)) ('SDHC', 'Gene', (73, 77)) ('SDH', 'Gene', '6390', (67, 70)) ('tumours', 'Phenotype', 'HP:0002664', (143, 150)) ('causing', 'Reg', (114, 121)) ('Biallelic inactivation', 'Var', (0, 22)) ('SDH', 'Gene', (79, 82)) ('SDH', 'Gene', '6390', (61, 64)) ('SDHA', 'Gene', (61, 65)) ('tumour', 'Phenotype', 'HP:0002664', (143, 149)) ('SDH', 'Gene', '6390', (138, 141)) ('SDHB', 'Gene', (67, 71)) ('SDHA', 'Gene', '6389', (61, 65)) ('SDH', 'Gene', (67, 70)) 20505 31308404 Germline genetic testing for germline SDHx mutations is now considered best practice for patients presenting with i) PPGL, ii) wild type gastrointestinal stromal tumours (wtGIST) and iii) specific histopathological subtypes of renal cell carcinoma. ('type gastrointestinal stromal tumours', 'Disease', (132, 169)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (227, 247)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (227, 247)) ('gastrointestinal stromal tumour', 'Phenotype', 'HP:0100723', (137, 168)) ('carcinoma', 'Phenotype', 'HP:0030731', (238, 247)) ('SDHx', 'Gene', (38, 42)) ('mutations', 'Var', (43, 52)) ('type gastrointestinal stromal tumours', 'Disease', 'MESH:D046152', (132, 169)) ('PPGL', 'Disease', (117, 121)) ('SDHx', 'Chemical', '-', (38, 42)) ('patients', 'Species', '9606', (89, 97)) ('tumours', 'Phenotype', 'HP:0002664', (162, 169)) ('tumour', 'Phenotype', 'HP:0002664', (162, 168)) ('renal cell carcinoma', 'Disease', (227, 247)) 20506 31308404 wtGIST are defined as GIST that are negative for KIT and PDGFRA somatic gene mutations and account for 15% of adult and 85% of paediatric GIST. ('mutations', 'Var', (77, 86)) ('PDGFRA', 'Gene', (57, 63)) ('PDGFRA', 'Gene', '5156', (57, 63)) ('negative', 'NegReg', (36, 44)) ('KIT', 'Gene', (49, 52)) 20507 31308404 Biallelic inactivation of any of the SDHx genes, most commonly results in destabilisation of the SDH enzyme complex, which can be detected by loss of staining for the SDHB protein on IH and therefore wtGIST can be further classified based on the loss or preservation of SDHB protein expression on immunohistochemistry as a surrogate marker for loss of function of the SDH complex. ('SDH', 'Gene', (270, 273)) ('loss', 'NegReg', (142, 146)) ('SDH', 'Gene', (37, 40)) ('destabilisation', 'MPA', (74, 89)) ('SDHB', 'Gene', '6390', (270, 274)) ('SDH', 'Gene', (167, 170)) ('SDHB', 'Gene', (270, 274)) ('SDH', 'Gene', '6390', (97, 100)) ('SDHB', 'Gene', '6390', (167, 171)) ('SDH', 'Gene', '6390', (368, 371)) ('SDHx', 'Chemical', '-', (37, 41)) ('SDHB', 'Gene', (167, 171)) ('SDH', 'Gene', (368, 371)) ('SDH', 'Gene', '6390', (270, 273)) ('SDH', 'Gene', '6390', (37, 40)) ('SDH', 'Gene', (97, 100)) ('SDH', 'Gene', '6390', (167, 170)) ('Biallelic', 'Var', (0, 9)) 20509 31308404 Identification of a germline pathogenic variant in SDHB informs a higher risk of a malignant PPGL and detection of a germline SDHx mutation facilitates personalised surveillance, family screening and potentially the choice of therapy for metastatic disease. ('malignant PPGL', 'Disease', (83, 97)) ('pathogenic', 'Reg', (29, 39)) ('variant', 'Var', (40, 47)) ('SDHx', 'Gene', (126, 130)) ('SDHx', 'Chemical', '-', (126, 130)) ('SDHB', 'Gene', '6390', (51, 55)) ('SDHB', 'Gene', (51, 55)) ('facilitates', 'PosReg', (140, 151)) 20510 31308404 In addition to testing for germline SDHx variants, immunostaining for SDHB and SDHA is a valuable approach for identifying dSDH tumours. ('SDHx', 'Gene', (36, 40)) ('variants', 'Var', (41, 49)) ('SDHB', 'Gene', '6390', (70, 74)) ('SDHB', 'Gene', (70, 74)) ('SDHx', 'Chemical', '-', (36, 40)) ('SDHA', 'Gene', (79, 83)) ('dSDH tumours', 'Disease', 'MESH:D009369', (123, 135)) ('tumour', 'Phenotype', 'HP:0002664', (128, 134)) ('tumours', 'Phenotype', 'HP:0002664', (128, 135)) ('SDHA', 'Gene', '6389', (79, 83)) ('dSDH tumours', 'Disease', (123, 135)) 20511 31308404 It is now recognized that in a subset of dSDH tumours, SDH inactivation results from promoter hypermethylation and epigenetic silencing of the SDHC gene. ('promoter', 'MPA', (85, 93)) ('SDH', 'Gene', '6390', (55, 58)) ('inactivation', 'NegReg', (59, 71)) ('SDH', 'Gene', '6390', (42, 45)) ('SDHC', 'Gene', '6391', (143, 147)) ('dSDH tumours', 'Disease', (41, 53)) ('SDH', 'Gene', (143, 146)) ('dSDH tumours', 'Disease', 'MESH:D009369', (41, 53)) ('SDH', 'Gene', (42, 45)) ('epigenetic silencing', 'Var', (115, 135)) ('SDH', 'Gene', (55, 58)) ('SDH', 'Gene', '6390', (143, 146)) ('tumour', 'Phenotype', 'HP:0002664', (46, 52)) ('SDHC', 'Gene', (143, 147)) ('tumours', 'Phenotype', 'HP:0002664', (46, 53)) 20513 31308404 Distinguishing dSDH tumours with germline SDHx mutations from those with SDHC hypermethylation only is beneficial because i) the relatives of patients with a germline SDHx mutation are at increased tumour risk and ii) an SDHC epimutation is potentially reversible (clinical trials have been initiated to investigate demethylating agents in such cases (ClinicalTrials.gov Identifier: NCT03165721)). ('tumour', 'Disease', 'MESH:D009369', (20, 26)) ('Distinguishing dSDH tumours', 'Disease', 'MESH:D009369', (0, 27)) ('tumour', 'Disease', (20, 26)) ('mutation', 'Var', (172, 180)) ('SDHC', 'Gene', '6391', (73, 77)) ('tumours', 'Phenotype', 'HP:0002664', (20, 27)) ('mutations', 'Var', (47, 56)) ('SDHx', 'Gene', (42, 46)) ('SDHC', 'Gene', '6391', (221, 225)) ('SDHC', 'Gene', (73, 77)) ('tumour', 'Phenotype', 'HP:0002664', (198, 204)) ('SDHx', 'Chemical', '-', (42, 46)) ('tumour', 'Disease', 'MESH:D009369', (198, 204)) ('tumour', 'Disease', (198, 204)) ('SDHx', 'Chemical', '-', (167, 171)) ('SDHC', 'Gene', (221, 225)) ('Distinguishing dSDH tumours', 'Disease', (0, 27)) ('patients', 'Species', '9606', (142, 150)) ('tumour', 'Phenotype', 'HP:0002664', (20, 26)) 20514 31308404 SDHC epimutations appear to be unique to specific tumour types (e.g wtGIST and PPGL) but further study is required to determine whether SDHC epimutations might occur in tumours with an associated hypermethylation phenotype other than SDH deficient wt GIST and PPGL. ('tumours', 'Disease', (169, 176)) ('SDH', 'Gene', (234, 237)) ('hypermethylation', 'MPA', (196, 212)) ('tumours', 'Phenotype', 'HP:0002664', (169, 176)) ('SDH', 'Gene', '6390', (136, 139)) ('tumours', 'Disease', 'MESH:D009369', (169, 176)) ('SDH', 'Gene', '6390', (0, 3)) ('SDHC', 'Gene', '6391', (136, 140)) ('epimutations', 'Var', (141, 153)) ('SDHC', 'Gene', '6391', (0, 4)) ('tumour', 'Phenotype', 'HP:0002664', (169, 175)) ('tumour', 'Phenotype', 'HP:0002664', (50, 56)) ('tumour', 'Disease', 'MESH:D009369', (169, 175)) ('tumour', 'Disease', 'MESH:D009369', (50, 56)) ('tumour', 'Disease', (169, 175)) ('tumour', 'Disease', (50, 56)) ('SDH', 'Gene', (136, 139)) ('SDH', 'Gene', (0, 3)) ('SDH', 'Gene', '6390', (234, 237)) ('SDHC', 'Gene', (136, 140)) ('SDHC', 'Gene', (0, 4)) 20515 31308404 IDH1 mutant gliomas have previously been associated with a global hypermethylation phenotype due to inhibition of alpha ketoglutarate dependent de-methylation enzymes and therefore IDH1mutant gliomas are a useful tumour type to test the hypothesis that SDHC promoter hypermethylation is unique to specific tumour types. ('gliomas', 'Disease', (12, 19)) ('tumour', 'Phenotype', 'HP:0002664', (306, 312)) ('tumour', 'Disease', 'MESH:D009369', (306, 312)) ('IDH1', 'Gene', (0, 4)) ('tumour', 'Disease', (306, 312)) ('gliomas', 'Disease', 'MESH:D005910', (12, 19)) ('gliomas', 'Disease', (192, 199)) ('IDH1', 'Gene', (181, 185)) ('glioma', 'Phenotype', 'HP:0009733', (12, 18)) ('inhibition', 'NegReg', (100, 110)) ('IDH1', 'Gene', '3417', (0, 4)) ('alpha', 'MPA', (114, 119)) ('SDHC', 'Gene', '6391', (253, 257)) ('global hypermethylation', 'MPA', (59, 82)) ('gliomas', 'Phenotype', 'HP:0009733', (12, 19)) ('gliomas', 'Disease', 'MESH:D005910', (192, 199)) ('IDH1', 'Gene', '3417', (181, 185)) ('tumour', 'Phenotype', 'HP:0002664', (213, 219)) ('glioma', 'Phenotype', 'HP:0009733', (192, 198)) ('tumour', 'Disease', 'MESH:D009369', (213, 219)) ('tumour', 'Disease', (213, 219)) ('mutant', 'Var', (5, 11)) ('gliomas', 'Phenotype', 'HP:0009733', (192, 199)) ('SDHC', 'Gene', (253, 257)) ('alpha ketoglutarate', 'Chemical', 'MESH:D007656', (114, 133)) 20516 31308404 Despite the implications for patient management and family testing and screening, diagnostic testing for SDHC epimutations has not been adopted as routine clinical practice because the indications for testing and a suitable methodology for a clinical service laboratory have not been well defined. ('patient', 'Species', '9606', (29, 36)) ('SDHC', 'Gene', '6391', (105, 109)) ('SDHC', 'Gene', (105, 109)) ('epimutations', 'Var', (110, 122)) 20517 31308404 The aims of this study were; i) to investigate a pyrosequencing-based assay for the diagnosis of SDHC promoter methylation and ii) to determine the role for SDHC epimutation testing in a clinical diagnostic pathway using pooled data from this study and available literature. ('SDHC', 'Gene', (157, 161)) ('epimutation', 'Var', (162, 173)) ('SDHC', 'Gene', '6391', (157, 161)) ('SDHC', 'Gene', (97, 101)) ('SDHC', 'Gene', '6391', (97, 101)) 20525 31308404 Tumour samples with evidence of SDHB preservation on SDHB IH were included in SDHC promoter methylation analysis in order to confirm if SDHB IH was a sensitive triaging test for the diagnosis of an SDHC epimutation. ('SDHC', 'Gene', '6391', (78, 82)) ('SDHC', 'Gene', '6391', (198, 202)) ('SDHB', 'Gene', '6390', (32, 36)) ('SDHB', 'Gene', '6390', (53, 57)) ('SDHB', 'Gene', '6390', (136, 140)) ('SDHB', 'Gene', (32, 36)) ('SDHB', 'Gene', (53, 57)) ('SDHB', 'Gene', (136, 140)) ('Tumour', 'Phenotype', 'HP:0002664', (0, 6)) ('SDHC', 'Gene', (78, 82)) ('SDHC', 'Gene', (198, 202)) ('epimutation', 'Var', (203, 214)) 20527 31308404 SDHC expression analysis was performed on RNA extracted from FFPE tumour and matched normal tissue and finally sequencing of tumour DNA was performed to identify somatic SDHx mutations. ('SDHx', 'Gene', (170, 174)) ('FFPE tumour', 'Disease', (61, 72)) ('SDHC', 'Gene', (0, 4)) ('tumour', 'Phenotype', 'HP:0002664', (125, 131)) ('tumour', 'Phenotype', 'HP:0002664', (66, 72)) ('SDHC', 'Gene', '6391', (0, 4)) ('mutations', 'Var', (175, 184)) ('FFPE tumour', 'Disease', 'MESH:D009369', (61, 72)) ('tumour', 'Disease', 'MESH:D009369', (66, 72)) ('tumour', 'Disease', 'MESH:D009369', (125, 131)) ('tumour', 'Disease', (66, 72)) ('tumour', 'Disease', (125, 131)) ('SDHx', 'Chemical', '-', (170, 174)) 20528 31308404 A further 17 IDH1 mutant glioma samples (anonymised tumour DNA from consented patients provided by Professor Colin Watts) were included in the study. ('tumour', 'Phenotype', 'HP:0002664', (52, 58)) ('glioma', 'Disease', 'MESH:D005910', (25, 31)) ('mutant', 'Var', (18, 24)) ('tumour', 'Disease', 'MESH:D009369', (52, 58)) ('patients', 'Species', '9606', (78, 86)) ('IDH1', 'Gene', (13, 17)) ('glioma', 'Phenotype', 'HP:0009733', (25, 31)) ('IDH1', 'Gene', '3417', (13, 17)) ('tumour', 'Disease', (52, 58)) ('glioma', 'Disease', (25, 31)) 20563 31308404 All cases identified as having an SDHC epimutation in this study had a dSDH wtGIST as the presenting phenotype. ('SDH', 'Gene', '6390', (72, 75)) ('SDHC', 'Gene', (34, 38)) ('SDH', 'Gene', (34, 37)) ('SDHC', 'Gene', '6391', (34, 38)) ('epimutation', 'Var', (39, 50)) ('SDH', 'Gene', (72, 75)) ('SDH', 'Gene', '6390', (34, 37)) 20564 31308404 Comparing 6 tumours with evidence of SDHC hypermethylation to those with low methylation revealed statistically significant associations with wtGIST (6/15 versus 0/17 PPGL; P = 0.005), female sex (6/19 versus 0/13 males; P = 0.02); metastatic disease (5/6 versus 5/26 (P = 0.035), younger age at diagnosis (mean age 24 years versus mean age 39.2 years) (P = 0.0002) and multiple primary tumours (3/6 versus 2/26, P = 0.03). ('tumours', 'Disease', 'MESH:D009369', (12, 19)) ('hypermethylation', 'Var', (42, 58)) ('SDHC', 'Gene', '6391', (37, 41)) ('associations', 'Interaction', (124, 136)) ('metastatic disease', 'Disease', (232, 250)) ('tumour', 'Phenotype', 'HP:0002664', (387, 393)) ('tumours', 'Phenotype', 'HP:0002664', (387, 394)) ('multiple primary tumours', 'Disease', (370, 394)) ('tumours', 'Disease', (12, 19)) ('tumours', 'Disease', 'MESH:D009369', (387, 394)) ('tumours', 'Disease', (387, 394)) ('tumours', 'Phenotype', 'HP:0002664', (12, 19)) ('tumour', 'Phenotype', 'HP:0002664', (12, 18)) ('SDHC', 'Gene', (37, 41)) ('multiple primary tumours', 'Disease', 'MESH:D009378', (370, 394)) 20570 31308404 ROC curve analysis (see Supplementary Data and statistical methods) demonstrated that a methylation of >8.5% separated the cases with an identified epimutation and silencing of SDHC from those without (AUC 1.0, p = < 0.0001). ('silencing', 'Var', (164, 173)) ('SDHC', 'Gene', (177, 181)) ('epimutation', 'Var', (148, 159)) ('methylation', 'MPA', (88, 99)) ('SDHC', 'Gene', '6391', (177, 181)) 20572 31308404 In 5/5 tumour samples with SDHC hypermethylation the mean fold difference was -6.41(SD 5.4) (Fig. ('SDHC', 'Gene', (27, 31)) ('tumour', 'Phenotype', 'HP:0002664', (7, 13)) ('SDHC', 'Gene', '6391', (27, 31)) ('hypermethylation', 'Var', (32, 48)) ('tumour', 'Disease', 'MESH:D009369', (7, 13)) ('tumour', 'Disease', (7, 13)) 20574 31308404 Tumour sequencing was performed on 4/6 (#001, #002, #003, #004) cases with evidence of SDHC hypermethylation and no somatic SDHx variants were detected. ('SDHC', 'Gene', (87, 91)) ('SDHC', 'Gene', '6391', (87, 91)) ('hypermethylation', 'Var', (92, 108)) ('Tumour', 'Phenotype', 'HP:0002664', (0, 6)) ('SDHx', 'Chemical', '-', (124, 128)) 20575 31308404 SDHB immunohistochemistry was performed on all tumours and loss of SDHB expression was confirmed in all 6 cases with SDHC hypermethylation (Table 1, examples for #001 and #003 displayed in Fig. ('SDHB', 'Gene', '6390', (67, 71)) ('tumours', 'Phenotype', 'HP:0002664', (47, 54)) ('tumours', 'Disease', 'MESH:D009369', (47, 54)) ('SDHC', 'Gene', (117, 121)) ('expression', 'MPA', (72, 82)) ('SDHB', 'Gene', (67, 71)) ('SDHB', 'Gene', '6390', (0, 4)) ('tumours', 'Disease', (47, 54)) ('SDHC', 'Gene', '6391', (117, 121)) ('loss', 'NegReg', (59, 63)) ('hypermethylation', 'Var', (122, 138)) ('SDHB', 'Gene', (0, 4)) ('tumour', 'Phenotype', 'HP:0002664', (47, 53)) 20577 31308404 No candidate pathogenic structural or single nucleotide variants were identified in these three cases in the SDHC locus (between 161314257-161375340) containing the SDHC promoter, exons and 3'UTR. ('SDHC', 'Gene', '6391', (109, 113)) ('SDHC', 'Gene', (165, 169)) ('between 161314257-161375340', 'Var', (121, 148)) ('SDHC', 'Gene', '6391', (165, 169)) ('SDHC', 'Gene', (109, 113)) 20578 31308404 In the absence of an in cis genetic cause, additional analysis for potential pathogenic variants in genes implicated in genome methylation (TET1, TET2, TET3, DNMT3B, DNMT3A, DNMT1), was performed. ('DNMT3A', 'Gene', '1788', (166, 172)) ('TET1', 'Gene', '80312', (140, 144)) ('variants', 'Var', (88, 96)) ('TET2', 'Gene', (146, 150)) ('TET3', 'Gene', '200424', (152, 156)) ('DNMT3B', 'Gene', (158, 164)) ('DNMT3B', 'Gene', '1789', (158, 164)) ('TET2', 'Gene', '54790', (146, 150)) ('DNMT1', 'Gene', (174, 179)) ('DNMT1', 'Gene', '1786', (174, 179)) ('TET1', 'Gene', (140, 144)) ('TET3', 'Gene', (152, 156)) ('DNMT3A', 'Gene', (166, 172)) 20580 31308404 None of the variants identified in the SDHC methylation cases were considered to be pathogenic by ACMG criteria. ('SDHC', 'Gene', (39, 43)) ('variants', 'Var', (12, 20)) ('methylation', 'Var', (44, 55)) ('SDHC', 'Gene', '6391', (39, 43)) 20581 31308404 A missense variant of uncertain significance in TET2 (p.Ile1762Val) was identified in all three cases with SDHC promoter hypermethylation, but this variant was absent from 1000 genomes and UK10K databases and was identified in 1876/4053 controls (Table S2). ('TET2', 'Gene', (48, 52)) ('p.Ile1762Val', 'Mutation', 'rs2454206', (54, 66)) ('SDHC', 'Gene', (107, 111)) ('SDHC', 'Gene', '6391', (107, 111)) ('TET2', 'Gene', '54790', (48, 52)) ('p.Ile1762Val', 'Var', (54, 66)) 20583 31308404 Firstly we undertook SDHC promoter methylation analysis on 17 IDH1 mutant glioma samples. ('glioma', 'Disease', 'MESH:D005910', (74, 80)) ('SDHC', 'Gene', (21, 25)) ('IDH1', 'Gene', '3417', (62, 66)) ('SDHC', 'Gene', '6391', (21, 25)) ('glioma', 'Disease', (74, 80)) ('mutant', 'Var', (67, 73)) ('IDH1', 'Gene', (62, 66)) ('glioma', 'Phenotype', 'HP:0009733', (74, 80)) 20584 31308404 IDH1 mutant gliomas have previously been associated with a global hypermethylation phenotype due to inhibition of alpha ketoglutarate dependent de-methylating enzymes. ('associated', 'Reg', (41, 51)) ('gliomas', 'Disease', (12, 19)) ('gliomas', 'Disease', 'MESH:D005910', (12, 19)) ('global hypermethylation', 'MPA', (59, 82)) ('gliomas', 'Phenotype', 'HP:0009733', (12, 19)) ('alpha', 'Protein', (114, 119)) ('mutant', 'Var', (5, 11)) ('IDH1', 'Gene', (0, 4)) ('glioma', 'Phenotype', 'HP:0009733', (12, 18)) ('alpha ketoglutarate', 'Chemical', 'MESH:D007656', (114, 133)) ('inhibition', 'NegReg', (100, 110)) ('IDH1', 'Gene', '3417', (0, 4)) 20585 31308404 The mean SDHC promoter methylation in the IDH1 mutant glioma samples was 2% (+-SD 1.28, range 1-4%) (Fig. ('glioma', 'Disease', 'MESH:D005910', (54, 60)) ('IDH1', 'Gene', '3417', (42, 46)) ('glioma', 'Phenotype', 'HP:0009733', (54, 60)) ('glioma', 'Disease', (54, 60)) ('SDHC', 'Gene', (9, 13)) ('IDH1', 'Gene', (42, 46)) ('mutant', 'Var', (47, 53)) ('SDHC', 'Gene', '6391', (9, 13)) ('methylation', 'MPA', (23, 34)) 20589 31308404 A search of PubMed (using the terms SDHC and methylation or epimutation) identified 8 publications containing 34 cases of SDHC promoter region hypermethylation in a variety of tumour types including dSDH wtGIST, sympathetic (PGL) and parasympathetic (HNPGL) paragangliomas (Table S5). ('paragangliomas', 'Disease', (258, 272)) ('SDHC', 'Gene', '6391', (122, 126)) ('SDH', 'Gene', '6390', (200, 203)) ('SDHC', 'Gene', (36, 40)) ('hypermethylation', 'Var', (143, 159)) ('SDH', 'Gene', (122, 125)) ('tumour', 'Phenotype', 'HP:0002664', (176, 182)) ('tumour', 'Disease', 'MESH:D009369', (176, 182)) ('SDH', 'Gene', (200, 203)) ('tumour', 'Disease', (176, 182)) ('SDHC', 'Gene', (122, 126)) ('paragangliomas', 'Disease', 'MESH:D010235', (258, 272)) ('paragangliomas', 'Phenotype', 'HP:0002668', (258, 272)) ('glioma', 'Phenotype', 'HP:0009733', (265, 271)) ('paraganglioma', 'Phenotype', 'HP:0002668', (258, 271)) ('SDH', 'Gene', '6390', (36, 39)) ('SDHC', 'Gene', '6391', (36, 40)) ('gliomas', 'Phenotype', 'HP:0009733', (265, 272)) ('parasympathetic', 'Disease', (234, 249)) ('sympathetic', 'Disease', (212, 223)) ('SDH', 'Gene', (36, 39)) ('SDH', 'Gene', '6390', (122, 125)) 20590 31308404 The majority of patients (94%, 32/34) identified with SDHC hypermethylation had a dSDH-wtGIST and 53% (18/34) of these cases also had an additional tumour(s) (Table S5). ('tumour', 'Disease', (148, 154)) ('hypermethylation', 'Var', (59, 75)) ('SDH', 'Gene', '6390', (83, 86)) ('patients', 'Species', '9606', (16, 24)) ('tumour', 'Phenotype', 'HP:0002664', (148, 154)) ('SDH', 'Gene', '6390', (54, 57)) ('SDH', 'Gene', (83, 86)) ('SDHC', 'Gene', (54, 58)) ('tumour', 'Disease', 'MESH:D009369', (148, 154)) ('SDHC', 'Gene', '6391', (54, 58)) ('SDH', 'Gene', (54, 57)) 20591 31308404 We identified SDHC promoter region methylation in 6/15 wtGIST (all 6 cases were dSDH-wtGIST) but none of the 17 PPGL or SDH-preserved-wtGIST (3/15 wtGIST). ('SDH', 'Gene', '6390', (14, 17)) ('SDHC', 'Gene', (14, 18)) ('SDH', 'Gene', (120, 123)) ('SDHC', 'Gene', '6391', (14, 18)) ('SDH', 'Gene', (14, 17)) ('SDH', 'Gene', '6390', (81, 84)) ('methylation', 'Var', (35, 46)) ('SDH', 'Gene', (81, 84)) ('SDH', 'Gene', '6390', (120, 123)) 20592 31308404 All SDHC hypermethylation cases were female and were significantly younger than patients without an SDHC epimutation. ('patients', 'Species', '9606', (80, 88)) ('SDHC', 'Gene', (4, 8)) ('SDHC', 'Gene', (100, 104)) ('SDHC', 'Gene', '6391', (4, 8)) ('SDHC', 'Gene', '6391', (100, 104)) ('hypermethylation', 'Var', (9, 25)) 20594 31308404 Rare reports of isolated sympathetic and parasympathetic PGL with an SDHC epimutation have also been published (Table S5). ('epimutation', 'Var', (74, 85)) ('SDHC', 'Gene', '6391', (69, 73)) ('SDHC', 'Gene', (69, 73)) 20595 31308404 In two of the cases reported here, somatic SDHC promoter methylation was detected in the presence of a germline pathogenic SDHC variant. ('variant', 'Var', (128, 135)) ('SDHC', 'Gene', '6391', (123, 127)) ('SDHC', 'Gene', '6391', (43, 47)) ('detected', 'Reg', (73, 81)) ('SDHC', 'Gene', (123, 127)) ('SDHC', 'Gene', (43, 47)) 20596 31308404 This would be consistent (though not proven) with a two hit model of tumourigenesis in which SDHC hypermethylation resulted in silencing of the wild-type allele in the tumour. ('tumour', 'Disease', (69, 75)) ('silencing', 'MPA', (127, 136)) ('tumour', 'Phenotype', 'HP:0002664', (168, 174)) ('tumour', 'Disease', 'MESH:D009369', (168, 174)) ('tumour', 'Phenotype', 'HP:0002664', (69, 75)) ('SDHC', 'Gene', (93, 97)) ('tumour', 'Disease', 'MESH:D009369', (69, 75)) ('tumour', 'Disease', (168, 174)) ('SDHC', 'Gene', '6391', (93, 97)) ('hypermethylation', 'Var', (98, 114)) 20597 31308404 Two of the cases with a germline SDHC mutation had multiple tumours including case #004 (Fig. ('SDHC', 'Gene', '6391', (33, 37)) ('tumours', 'Disease', 'MESH:D009369', (60, 67)) ('multiple tumour', 'Disease', (51, 66)) ('tumours', 'Disease', (60, 67)) ('multiple tumour', 'Disease', 'MESH:D009369', (51, 66)) ('mutation', 'Var', (38, 46)) ('tumour', 'Phenotype', 'HP:0002664', (60, 66)) ('SDHC', 'Gene', (33, 37)) ('tumours', 'Phenotype', 'HP:0002664', (60, 67)) 20599 31308404 Although it was previously suggested that PCHO occurred exclusively in CT (a non-inherited disorder), this study and others have demonstrated that the triad of wtGIST, PPGL and PCHO can occur in association with a germline SDHx mutation and highlights the overlapping features of CT and CSS. ('PCHO', 'Disease', (177, 181)) ('mutation', 'Var', (228, 236)) ('association', 'Interaction', (195, 206)) ('PCHO', 'CellLine', 'None', (177, 181)) ('wtGIST', 'Disease', (160, 166)) ('CSS', 'Disease', (287, 290)) ('PPGL', 'Disease', (168, 172)) ('CSS', 'Disease', 'MESH:C536436', (287, 290)) ('SDHx', 'Chemical', '-', (223, 227)) ('non-inherited disorder', 'Disease', 'MESH:D030342', (77, 99)) ('SDHx', 'Gene', (223, 227)) ('PCHO', 'CellLine', 'None', (42, 46)) ('non-inherited disorder', 'Disease', (77, 99)) 20604 31308404 In the case of the mismatch repair gene MLH1, somatic MLH1 promoter methylation is relatively common in older individuals with colorectal cancer with microsatellite instability but there are rare cases of patients with a constitutional MLH1 epimutation who present at a younger age. ('MLH1', 'Gene', '4292', (54, 58)) ('patients', 'Species', '9606', (205, 213)) ('MLH1', 'Gene', '4292', (236, 240)) ('common', 'Reg', (94, 100)) ('MLH1', 'Gene', (54, 58)) ('MLH1', 'Gene', (236, 240)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (127, 144)) ('cancer', 'Phenotype', 'HP:0002664', (138, 144)) ('colorectal cancer', 'Disease', (127, 144)) ('microsatellite instability', 'Var', (150, 176)) ('colorectal cancer', 'Disease', 'MESH:D015179', (127, 144)) ('MLH1', 'Gene', '4292', (40, 44)) ('epimutation', 'Var', (241, 252)) ('MLH1', 'Gene', (40, 44)) 20606 31308404 In the absence of a detectable in cis or in trans genetic variant in these cases, low level postzygotic tissue mosaicism for SDHC promoter hypermethylation, provides an alternative hypothesis for this multiple tumour phenotype at a young age. ('SDHC', 'Gene', (125, 129)) ('hypermethylation', 'Var', (139, 155)) ('multiple tumour', 'Disease', (201, 216)) ('multiple tumour', 'Disease', 'MESH:D009369', (201, 216)) ('tumour', 'Phenotype', 'HP:0002664', (210, 216)) ('SDHC', 'Gene', '6391', (125, 129)) 20610 31308404 We found that the methylation status of 12 CpG's in CpG27 in the promoter region of the SDHC gene could be accurately assessed and that detection of hypermethylation of the SDHC promoter correlated with reduced SDHC mRNA on mRNA extracted from the same FFPE tissue block. ('SDHC', 'Gene', '6391', (211, 215)) ('CpG27', 'Gene', (52, 57)) ('SDHC', 'Gene', '6391', (173, 177)) ('reduced', 'NegReg', (203, 210)) ('hypermethylation', 'Var', (149, 165)) ('SDHC', 'Gene', (211, 215)) ('SDHC', 'Gene', (88, 92)) ('SDHC', 'Gene', (173, 177)) ('SDHC', 'Gene', '6391', (88, 92)) 20613 31308404 The authors recommend that whenever possible, cases with SDHC promoter hypermethylation should be analysed by RT-PCR of both tumour and adjacent normal tissue to confirm silencing of SDHC in the tumour tissue. ('promoter hypermethylation', 'Var', (62, 87)) ('SDHC', 'Gene', '6391', (57, 61)) ('tumour', 'Disease', 'MESH:D009369', (195, 201)) ('tumour', 'Phenotype', 'HP:0002664', (125, 131)) ('SDHC', 'Gene', (183, 187)) ('tumour', 'Disease', (195, 201)) ('silencing', 'MPA', (170, 179)) ('SDHC', 'Gene', '6391', (183, 187)) ('tumour', 'Disease', 'MESH:D009369', (125, 131)) ('tumour', 'Disease', (125, 131)) ('tumour', 'Phenotype', 'HP:0002664', (195, 201)) ('SDHC', 'Gene', (57, 61)) 20616 31308404 If germline genetic testing (including MLPA) is negative and SDHB IH suggests loss of SDHB protein expression, the first step for PPGL should be somatic sequencing to investigate for somatic SDHx or VHL mutations, which can account for loss of SDHB protein expression. ('expression', 'MPA', (99, 109)) ('SDHB', 'Gene', (86, 90)) ('SDHB', 'Gene', '6390', (61, 65)) ('VHL', 'Gene', '7428', (199, 202)) ('SDHx', 'Chemical', '-', (191, 195)) ('protein', 'Protein', (91, 98)) ('loss', 'NegReg', (78, 82)) ('VHL', 'Gene', (199, 202)) ('SDHB', 'Gene', (61, 65)) ('SDHB', 'Gene', '6390', (244, 248)) ('SDHB', 'Gene', (244, 248)) ('mutations', 'Var', (203, 212)) ('SDHx', 'Gene', (191, 195)) ('SDHB', 'Gene', '6390', (86, 90)) 20617 31308404 However, as SDHC epimutations are more frequent in wtGIST than in PPGL, we recommend SDHC promoter methylation analysis as the next step after germline genetic testing for wtGIST (Fig. ('SDHC', 'Gene', (85, 89)) ('SDHC', 'Gene', '6391', (85, 89)) ('SDHC', 'Gene', (12, 16)) ('epimutations', 'Var', (17, 29)) ('SDHC', 'Gene', '6391', (12, 16)) 20618 31308404 If an SDHC epimutation is diagnosed, somatic tumour sequencing should be performed to identify a co-existing somatic SDHx mutation, which may affect the efficacy of any potential demethylating therapy (Fig. ('affect', 'Reg', (142, 148)) ('efficacy', 'MPA', (153, 161)) ('SDHC', 'Gene', (6, 10)) ('mutation', 'Var', (122, 130)) ('tumour', 'Phenotype', 'HP:0002664', (45, 51)) ('tumour', 'Disease', 'MESH:D009369', (45, 51)) ('SDHC', 'Gene', '6391', (6, 10)) ('SDHx', 'Chemical', '-', (117, 121)) ('SDHx', 'Gene', (117, 121)) ('tumour', 'Disease', (45, 51)) 20621 31308404 In conclusion, the results from our literature review, experimental studies and interrogation of the TCGA data, suggest that SDHC epimutations are rare in tumours other than wtGIST and PPGL. ('tumours', 'Disease', (155, 162)) ('SDHC', 'Gene', (125, 129)) ('tumour', 'Phenotype', 'HP:0002664', (155, 161)) ('tumours', 'Phenotype', 'HP:0002664', (155, 162)) ('SDHC', 'Gene', '6391', (125, 129)) ('tumours', 'Disease', 'MESH:D009369', (155, 162)) ('epimutations', 'Var', (130, 142)) 20622 31308404 Improving the accessibility of clinical diagnostic testing for SDHC promoter methylation will facilitate the management of patients with wtGIST by enabling stratification for personalised therapeutic strategies and defining risks for other family members, according to the presence or absence of a germline SDHx mutation and or a SDHC epimutation. ('mutation', 'Var', (312, 320)) ('SDHC', 'Gene', (330, 334)) ('SDHC', 'Gene', (63, 67)) ('patients', 'Species', '9606', (123, 131)) ('facilitate', 'PosReg', (94, 104)) ('SDHC', 'Gene', '6391', (330, 334)) ('SDHC', 'Gene', '6391', (63, 67)) ('epimutation', 'Var', (335, 346)) ('SDHx', 'Chemical', '-', (307, 311)) ('SDHx', 'Gene', (307, 311)) 20653 29084607 Only a few tumor cells showed positive immunolabeling for Ki67. ('Ki67', 'Var', (58, 62)) ('tumor', 'Disease', (11, 16)) ('tumor', 'Disease', 'MESH:D009369', (11, 16)) ('tumor', 'Phenotype', 'HP:0002664', (11, 16)) 20678 28471419 Half of these inherited cases are intriguingly caused by mutations in genes encoding tricarboxylic acid enzymes, namely SDHA, SDHB, SDHC, SDHD, and SDHAF2 genes, encoding succinate dehydrogenase and its assembly protein, FH encoding fumarate hydratase, and MDH2 encoding malate dehydrogenase. ('malate dehydrogenase', 'Gene', (271, 291)) ('succinate dehydrogenase', 'Gene', (171, 194)) ('FH', 'Gene', '2271', (221, 223)) ('mutations', 'Var', (57, 66)) ('SDHC', 'Gene', (132, 136)) ('SDHB', 'Gene', '6390', (126, 130)) ('SDHA', 'Gene', (120, 124)) ('MDH2', 'Gene', (257, 261)) ('fumarate hydratase', 'Gene', (233, 251)) ('SDHA', 'Gene', '6389', (120, 124)) ('SDHB', 'Gene', (126, 130)) ('succinate dehydrogenase', 'Gene', '6390', (171, 194)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (85, 103)) ('SDHA', 'Gene', (148, 152)) ('caused by', 'Reg', (47, 56)) ('SDHC', 'Gene', '6391', (132, 136)) ('SDHD', 'Gene', '6392', (138, 142)) ('SDHA', 'Gene', '6389', (148, 152)) ('MDH2', 'Gene', '4191', (257, 261)) ('malate dehydrogenase', 'Gene', '10873', (271, 291)) ('SDHAF2', 'Gene', '54949', (148, 154)) ('fumarate hydratase', 'Gene', '2271', (233, 251)) ('SDHAF2', 'Gene', (148, 154)) ('SDHD', 'Gene', (138, 142)) 20679 28471419 These mutations may also predispose to other type of cancers, such as renal cancer, leiomyomas, or gastro-intestinal stromal tumours. ('cancers', 'Phenotype', 'HP:0002664', (53, 60)) ('gastro-intestinal stromal tumours', 'Phenotype', 'HP:0100723', (99, 132)) ('gastro-intestinal stromal tumour', 'Phenotype', 'HP:0100723', (99, 131)) ('leiomyomas', 'Disease', 'MESH:D007889', (84, 94)) ('cancers', 'Disease', (53, 60)) ('cancers', 'Disease', 'MESH:D009369', (53, 60)) ('renal cancer', 'Disease', (70, 82)) ('tumour', 'Phenotype', 'HP:0002664', (125, 131)) ('gastro-intestinal stromal tumours', 'Disease', (99, 132)) ('cancer', 'Phenotype', 'HP:0002664', (76, 82)) ('leiomyomas', 'Disease', (84, 94)) ('gastro-intestinal stromal tumours', 'Disease', 'MESH:D007414', (99, 132)) ('cancer', 'Phenotype', 'HP:0002664', (53, 59)) ('renal cancer', 'Disease', 'MESH:D007680', (70, 82)) ('renal cancer', 'Phenotype', 'HP:0009726', (70, 82)) ('tumours', 'Phenotype', 'HP:0002664', (125, 132)) ('predispose', 'Reg', (25, 35)) ('mutations', 'Var', (6, 15)) 20689 28471419 Approximately 40% of patients with PPGLs carry a germline mutation in one of the 13 PPGL predisposing genes identified so far, including the RET proto-oncogene and the NF1, VHL, and SDHx genes. ('VHL', 'Gene', (173, 176)) ('RET', 'Gene', '5979', (141, 144)) ('VHL', 'Gene', '7428', (173, 176)) ('PPGL', 'Gene', (84, 88)) ('PPGLs', 'Disease', (35, 40)) ('patients', 'Species', '9606', (21, 29)) ('NF1', 'Gene', (168, 171)) ('RET', 'Gene', (141, 144)) ('SDHx', 'Chemical', '-', (182, 186)) ('germline mutation', 'Var', (49, 66)) ('SDHx', 'Gene', (182, 186)) ('NF1', 'Gene', '4763', (168, 171)) ('PGLs', 'Phenotype', 'HP:0002668', (36, 40)) 20690 28471419 Other rare cases involve germline mutations in the FH, TMEM127, MAX, and MDH2 genes. ('TMEM127', 'Gene', (55, 62)) ('TMEM127', 'Gene', '55654', (55, 62)) ('MDH2', 'Gene', '4191', (73, 77)) ('FH', 'Gene', '2271', (51, 53)) ('MDH2', 'Gene', (73, 77)) ('germline mutations', 'Var', (25, 43)) ('MAX', 'Gene', (64, 67)) 20692 28471419 Predisposing mutations can occur in apparently sporadic tumours (12-15%) or in the context of a hereditary cancer syndrome mostly represented by the following three genetic syndromes: multiple endocrine neoplasia type 2, Von Hippel-Lindau disease, and neurofibromatosis type I. Activating mutations in the RET proto-oncogene lead to multiple endocrine neoplasia type 2 (MEN2), characterized by the development of medullary thyroid carcinoma, often associated with PCCs and hyperparathyroidism. ('neoplasia', 'Phenotype', 'HP:0002664', (203, 212)) ('hyperparathyroidism', 'Disease', 'MESH:D006961', (473, 492)) ('mutations', 'Var', (289, 298)) ('carcinoma', 'Phenotype', 'HP:0030731', (431, 440)) ('neurofibromatosis type I', 'Disease', (252, 276)) ('hereditary cancer syndrome', 'Disease', 'MESH:D009386', (96, 122)) ('sporadic tumours', 'Disease', 'MESH:D009369', (47, 63)) ('RET', 'Gene', (306, 309)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (473, 492)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (193, 212)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (252, 269)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (333, 368)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (342, 361)) ('PC', 'Gene', '18563', (464, 466)) ('sporadic tumours', 'Disease', (47, 63)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (423, 440)) ('neoplasia', 'Phenotype', 'HP:0002664', (352, 361)) ('neurofibromatosis type I', 'Disease', 'MESH:C537392', (252, 276)) ('multiple endocrine neoplasia type 2', 'Disease', (184, 219)) ('Von Hippel-Lindau disease', 'Disease', (221, 246)) ('thyroid carcinoma', 'Disease', (423, 440)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (413, 440)) ('genetic syndromes', 'Disease', (165, 182)) ('genetic syndromes', 'Disease', 'MESH:D030342', (165, 182)) ('hereditary cancer syndrome', 'Disease', (96, 122)) ('tumour', 'Phenotype', 'HP:0002664', (56, 62)) ('tumours', 'Phenotype', 'HP:0002664', (56, 63)) ('Von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (221, 246)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (423, 440)) ('Activating', 'PosReg', (278, 288)) ('lead to', 'Reg', (325, 332)) ('cancer', 'Phenotype', 'HP:0002664', (107, 113)) ('RET', 'Gene', '5979', (306, 309)) ('PCCs', 'Phenotype', 'HP:0002666', (464, 468)) ('hyperparathyroidism', 'Disease', (473, 492)) ('multiple endocrine neoplasia type 2', 'Disease', (333, 368)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (184, 219)) 20694 28471419 Mutations in this gene cause neurofibromatosis type 1, also known as Von Recklinghausen disease, a frequent autosomal disorder (prevalence of 1 in 3000 to 1 in 4000 people in the general population and a high penetrance) characterized by pigmentary abnormalities and neoplastic growth of neural crest-derived cells, such as multiple dermal neurofibromas and very rarely PCCs (0.1-5.7% of patients with NF1). ('Von Recklinghausen disease', 'Disease', (69, 95)) ('pigmentary abnormalities', 'Disease', (238, 262)) ('neurofibromas', 'Phenotype', 'HP:0001067', (340, 353)) ('PC', 'Gene', '18563', (370, 372)) ('patients', 'Species', '9606', (388, 396)) ('NF1', 'Gene', '4763', (402, 405)) ('cause', 'Reg', (23, 28)) ('neurofibromatosis type 1', 'Gene', (29, 53)) ('Von Recklinghausen disease', 'Disease', 'MESH:C537392', (69, 95)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (29, 46)) ('Mutations', 'Var', (0, 9)) ('NF1', 'Gene', (402, 405)) ('multiple dermal neurofibromas', 'Disease', 'MESH:C537392', (324, 353)) ('pigmentary abnormalities', 'Phenotype', 'HP:0001000', (238, 262)) ('neurofibromatosis type 1', 'Gene', '4763', (29, 53)) ('pigmentary abnormalities', 'Disease', 'MESH:C536859', (238, 262)) ('multiple dermal neurofibromas', 'Disease', (324, 353)) ('people', 'Species', '9606', (165, 171)) ('PCCs', 'Phenotype', 'HP:0002666', (370, 374)) ('autosomal disorder', 'Disease', 'MESH:D030342', (108, 126)) ('autosomal disorder', 'Disease', (108, 126)) 20695 28471419 The Von Hippel Lindau disease is a hereditary neoplastic syndrome caused by mutations in the VHL tumour suppressor gene, which are responsible for a predisposition to renal cell carcinoma (RCC), retinal or central nervous system hemangioblastomas, pancreatic cysts, and PCCs. ('central nervous system hemangioblastomas', 'Disease', 'MESH:D018325', (206, 246)) ('VHL tumour', 'Disease', (93, 103)) ('neoplastic syndrome', 'Phenotype', 'HP:0002664', (46, 65)) ('VHL tumour', 'Disease', 'MESH:D006623', (93, 103)) ('pancreatic cysts', 'Disease', (248, 264)) ('RCC', 'Disease', 'MESH:C538614', (189, 192)) ('caused by', 'Reg', (66, 75)) ('pancreatic cysts', 'Phenotype', 'HP:0001737', (248, 264)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (167, 187)) ('nervous system hemangioblastomas', 'Phenotype', 'HP:0006880', (214, 246)) ('PCCs', 'Phenotype', 'HP:0002666', (270, 274)) ('Von Hippel Lindau disease', 'Disease', 'MESH:D006623', (4, 29)) ('central nervous system hemangioblastomas', 'Disease', (206, 246)) ('hereditary neoplastic syndrome', 'Disease', (35, 65)) ('Von Hippel Lindau disease', 'Disease', (4, 29)) ('retinal', 'Disease', (195, 202)) ('retinal', 'Disease', 'MESH:D012173', (195, 202)) ('renal cell carcinoma', 'Disease', (167, 187)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (167, 187)) ('tumour', 'Phenotype', 'HP:0002664', (97, 103)) ('pancreatic cysts', 'Disease', 'MESH:D010181', (248, 264)) ('mutations', 'Var', (76, 85)) ('PC', 'Gene', '18563', (270, 272)) ('carcinoma', 'Phenotype', 'HP:0030731', (178, 187)) ('hereditary neoplastic syndrome', 'Disease', 'MESH:D009386', (35, 65)) ('RCC', 'Disease', (189, 192)) ('RCC', 'Phenotype', 'HP:0005584', (189, 192)) 20700 28471419 In 2000, the description of the first mutations in the SDHD gene in patients with PPGL was a major breakthrough, not only in the understanding of PPGL tumorigenesis but in cancer in general. ('cancer', 'Phenotype', 'HP:0002664', (172, 178)) ('patients', 'Species', '9606', (68, 76)) ('cancer', 'Disease', 'MESH:D009369', (172, 178)) ('SDHD', 'Gene', '6392', (55, 59)) ('cancer', 'Disease', (172, 178)) ('mutations', 'Var', (38, 47)) ('SDHD', 'Gene', (55, 59)) 20708 28471419 Hence, patients carry a germline heterozygous loss-of-function mutation and subsequent loss of heterozygosity (LOH) at somatic level, leads to the complete inactivation of the gene. ('loss', 'NegReg', (87, 91)) ('inactivation', 'MPA', (156, 168)) ('mutation', 'Var', (63, 71)) ('loss-of-function', 'NegReg', (46, 62)) ('patients', 'Species', '9606', (7, 15)) 20710 28471419 Previous studies have reported that germline mutations in one of the SDHx genes lead to PPGL predisposition in patients, which is transmitted in an autosomal dominant fashion for SDHA, SDHB, and SDHC genes mutations and in an autosomal dominant fashion with maternal imprinting for SDHD and SDHAF2 genes. ('SDHB', 'Gene', (185, 189)) ('SDHD', 'Gene', (282, 286)) ('lead to', 'Reg', (80, 87)) ('SDHx', 'Chemical', '-', (69, 73)) ('SDHC', 'Gene', (195, 199)) ('transmitted', 'Reg', (130, 141)) ('mutations', 'Var', (206, 215)) ('SDHB', 'Gene', '6390', (185, 189)) ('SDHAF2', 'Gene', (291, 297)) ('SDHD', 'Gene', '6392', (282, 286)) ('SDHAF2', 'Gene', '54949', (291, 297)) ('SDHA', 'Gene', (291, 295)) ('SDHA', 'Gene', (179, 183)) ('PPGL predisposition', 'Gene', (88, 107)) ('SDHC', 'Gene', '6391', (195, 199)) ('SDHA', 'Gene', '6389', (291, 295)) ('SDHA', 'Gene', '6389', (179, 183)) ('SDHx', 'Gene', (69, 73)) ('patients', 'Species', '9606', (111, 119)) 20714 28471419 SDHD germline mutations have a penetrance of 86% at the age of 50 and are frequently associated with the development of multiple head and neck PGL and with family history of PPGLs in the paternal branch. ('associated with', 'Reg', (85, 100)) ('PGLs', 'Phenotype', 'HP:0002668', (175, 179)) ('SDHD', 'Gene', '6392', (0, 4)) ('SDHD', 'Gene', (0, 4)) ('mutations', 'Var', (14, 23)) 20716 28471419 On the contrary, malignant PPGLs are only found in 5% of SDHD or SDHC mutation carriers. ('SDHD', 'Gene', '6392', (57, 61)) ('SDHC', 'Gene', (65, 69)) ('SDHD', 'Gene', (57, 61)) ('SDHC', 'Gene', '6391', (65, 69)) ('PGLs', 'Phenotype', 'HP:0002668', (28, 32)) ('mutation', 'Var', (70, 78)) 20717 28471419 Germline SDHB mutations are found in 36% of all malignant PPGLs, and SDHB-related malignant PPGLs have a worst prognosis than all other types of malignant PPGL. ('SDHB', 'Gene', '6390', (9, 13)) ('SDHB', 'Gene', (69, 73)) ('SDHB', 'Gene', (9, 13)) ('PGLs', 'Phenotype', 'HP:0002668', (59, 63)) ('SDHB', 'Gene', '6390', (69, 73)) ('PGLs', 'Phenotype', 'HP:0002668', (93, 97)) ('mutations', 'Var', (14, 23)) 20719 28471419 The reason for this phenotypic characteristic of SDHB mutants is still unclear. ('SDHB', 'Gene', (49, 53)) ('mutants', 'Var', (54, 61)) ('SDHB', 'Gene', '6390', (49, 53)) 20720 28471419 Germline mutation in SDHC gene are rare and may be associated with any type of PPGL. ('SDHC', 'Gene', (21, 25)) ('SDHC', 'Gene', '6391', (21, 25)) ('PPGL', 'Disease', (79, 83)) ('associated', 'Reg', (51, 61)) ('Germline mutation', 'Var', (0, 17)) 20721 28471419 Finally, SDHA and SDHAF2 mutations have been described in only few patients and predispose to abdominal PPGL and head and neck PGL, respectively. ('mutations', 'Var', (25, 34)) ('patients', 'Species', '9606', (67, 75)) ('SDHA', 'Gene', '6389', (9, 13)) ('SDHA', 'Gene', (18, 22)) ('SDHAF2', 'Gene', (18, 24)) ('abdominal PPGL', 'Disease', (94, 108)) ('SDHAF2', 'Gene', '54949', (18, 24)) ('SDHA', 'Gene', (9, 13)) ('predispose to', 'Reg', (80, 93)) ('SDHA', 'Gene', '6389', (18, 22)) 20722 28471419 Because of the genetic complexity of PPGL and of the large number of variants of unknown significance (VUS) identified in patients, immunochemical analyses of SDHA, SDHB, and SDHD are now used in pathology department worldwide to validate the genetic analyses. ('variants', 'Var', (69, 77)) ('PPGL', 'Gene', (37, 41)) ('SDHA', 'Gene', '6389', (159, 163)) ('SDHB', 'Gene', '6390', (165, 169)) ('SDHD', 'Gene', (175, 179)) ('SDHD', 'Gene', '6392', (175, 179)) ('patients', 'Species', '9606', (122, 130)) ('SDHA', 'Gene', (159, 163)) ('SDHB', 'Gene', (165, 169)) 20723 28471419 Germline mutations in SDHx genes have also been implicated in other tumours such as renal cell carcinoma (RCC) and gastro-intestinal stromal tumour (GIST) (Table 1). ('Germline mutations', 'Var', (0, 18)) ('tumours', 'Phenotype', 'HP:0002664', (68, 75)) ('SDHx', 'Gene', (22, 26)) ('renal cell carcinoma', 'Disease', (84, 104)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (84, 104)) ('gastro-intestinal stromal tumour', 'Disease', (115, 147)) ('tumours', 'Disease', 'MESH:D009369', (68, 75)) ('GIST', 'Phenotype', 'HP:0100723', (149, 153)) ('tumour', 'Phenotype', 'HP:0002664', (68, 74)) ('SDHx', 'Chemical', '-', (22, 26)) ('carcinoma', 'Phenotype', 'HP:0030731', (95, 104)) ('RCC', 'Disease', (106, 109)) ('RCC', 'Phenotype', 'HP:0005584', (106, 109)) ('implicated', 'Reg', (48, 58)) ('gastro-intestinal stromal tumour', 'Disease', 'MESH:D007414', (115, 147)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (84, 104)) ('RCC', 'Disease', 'MESH:C538614', (106, 109)) ('tumour', 'Phenotype', 'HP:0002664', (141, 147)) ('tumours', 'Disease', (68, 75)) ('gastro-intestinal stromal tumour', 'Phenotype', 'HP:0100723', (115, 147)) 20725 28471419 Since, SDHx genes mutations have been implicated in 0.05 to 0.2% of renal cancers, and SDHB mutations are the most frequent. ('renal cancers', 'Disease', (68, 81)) ('renal cancer', 'Phenotype', 'HP:0009726', (68, 80)) ('SDHB', 'Gene', '6390', (87, 91)) ('cancers', 'Phenotype', 'HP:0002664', (74, 81)) ('SDHx genes', 'Gene', (7, 17)) ('mutations', 'Var', (92, 101)) ('SDHx', 'Chemical', '-', (7, 11)) ('implicated', 'Reg', (38, 48)) ('renal cancers', 'Disease', 'MESH:D007680', (68, 81)) ('cancer', 'Phenotype', 'HP:0002664', (74, 80)) ('SDHB', 'Gene', (87, 91)) ('mutations', 'Var', (18, 27)) 20728 28471419 In patients carrying the SDHB gene mutation, the lifetime risk of RCC has been estimated as 14%. ('RCC', 'Disease', 'MESH:C538614', (66, 69)) ('SDHB', 'Gene', '6390', (25, 29)) ('patients', 'Species', '9606', (3, 11)) ('mutation', 'Var', (35, 43)) ('SDHB', 'Gene', (25, 29)) ('RCC', 'Disease', (66, 69)) ('RCC', 'Phenotype', 'HP:0005584', (66, 69)) 20730 28471419 In these WT GISTs, more than 85% are secondary to an SDHx gene mutation. ('GIST', 'Phenotype', 'HP:0100723', (12, 16)) ('SDHx', 'Chemical', '-', (53, 57)) ('SDHx', 'Gene', (53, 57)) ('mutation', 'Var', (63, 71)) ('secondary', 'Reg', (37, 46)) 20731 28471419 The great majority are germline mutation (82%) and SDHA mutations represent more than a half of the identified mutations. ('SDHA', 'Gene', (51, 55)) ('mutations', 'Var', (56, 65)) ('germline mutation', 'Var', (23, 40)) ('SDHA', 'Gene', '6389', (51, 55)) 20734 28471419 Recently, epimutations of the SDHC gene promoter have been proposed as a new mechanism of SDH loss of function in WT GIST with a negative SDHB immunochemistry and without any mutations in germline or somatic DNA. ('SDHB', 'Gene', (138, 142)) ('SDHC', 'Gene', (30, 34)) ('epimutations', 'Var', (10, 22)) ('SDHC', 'Gene', '6391', (30, 34)) ('SDH', 'Gene', (90, 93)) ('GIST', 'Phenotype', 'HP:0100723', (117, 121)) ('loss of function', 'NegReg', (94, 110)) ('SDHB', 'Gene', '6390', (138, 142)) ('negative', 'NegReg', (129, 137)) 20737 28471419 They are characterized by an SDHC promoter-specific CpG island hypermethylation associated with subsequent gene silencing. ('SDHC', 'Gene', (29, 33)) ('SDHC', 'Gene', '6391', (29, 33)) ('hypermethylation', 'Var', (63, 79)) 20738 28471419 Recently, a patient with multiple PPGL has been described with an epimutation of the SDHC promotor. ('patient', 'Species', '9606', (12, 19)) ('SDHC', 'Gene', '6391', (85, 89)) ('SDHC', 'Gene', (85, 89)) ('epimutation', 'Var', (66, 77)) 20741 28471419 Germline mutations in this tumour suppressor gene were first described in the predisposition to HRLCC syndrome (hereditary leiomyomatosis and renal cell cancer) also known as Reed Syndrome. ('Germline mutations', 'Var', (0, 18)) ('HRLCC syndrome', 'Disease', (96, 110)) ('tumour', 'Phenotype', 'HP:0002664', (27, 33)) ('Reed Syndrome', 'Disease', (175, 188)) ('cancer', 'Phenotype', 'HP:0002664', (153, 159)) ('hereditary leiomyomatosis and renal cell cancer', 'Disease', 'MESH:C535516', (112, 159)) ('tumour', 'Disease', 'MESH:D009369', (27, 33)) ('HRLCC syndrome', 'Disease', 'MESH:D013577', (96, 110)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (142, 159)) ('tumour', 'Disease', (27, 33)) 20744 28471419 More recently, it was demonstrated that FH gene germline mutations can also predispose to PPGL and lead to malignant or multiple forms of the disease. ('predispose', 'Reg', (76, 86)) ('lead to', 'Reg', (99, 106)) ('PPGL', 'Disease', (90, 94)) ('FH', 'Gene', '2271', (40, 42)) ('germline mutations', 'Var', (48, 66)) ('malignant', 'Disease', (107, 116)) 20747 28471419 Until now, this is the only case of MDH2 mutation ever described in the predisposition to cancer. ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('mutation', 'Var', (41, 49)) ('MDH2', 'Gene', '4191', (36, 40)) ('MDH2', 'Gene', (36, 40)) ('cancer', 'Disease', (90, 96)) ('cancer', 'Disease', 'MESH:D009369', (90, 96)) 20748 28471419 In 2000, the demonstration of SDHD being a tumour suppressor gene showed that Warburg view was actually true, at least in these very specific cases of inherited cancer predisposition, and that a defect in a central metabolic function could be the origin of cancer. ('cancer', 'Phenotype', 'HP:0002664', (161, 167)) ('cancer', 'Phenotype', 'HP:0002664', (257, 263)) ('tumour', 'Disease', 'MESH:D009369', (43, 49)) ('tumour', 'Disease', (43, 49)) ('SDHD', 'Gene', (30, 34)) ('SDHD', 'Gene', '6392', (30, 34)) ('cancer', 'Disease', 'MESH:D009369', (161, 167)) ('defect', 'Var', (195, 201)) ('cancer', 'Disease', 'MESH:D009369', (257, 263)) ('tumour', 'Phenotype', 'HP:0002664', (43, 49)) ('cancer', 'Disease', (161, 167)) ('cancer', 'Disease', (257, 263)) ('central metabolic function', 'MPA', (207, 233)) 20751 28471419 One explanation is that patients affected with Leigh syndrome or fumarate hydratase deficiency carry homozygous germline mutations that maintain some residual enzymatic activity, allowing these mutations to be viable and mediating the neurologic phenotype. ('mutations', 'Var', (121, 130)) ('mutations', 'Var', (194, 203)) ('Leigh syndrome', 'Disease', (47, 61)) ('fumarate hydratase deficiency', 'Disease', (65, 94)) ('patients', 'Species', '9606', (24, 32)) ('fumarate hydratase deficiency', 'Disease', 'MESH:C538191', (65, 94)) ('fumarate hydratase deficiency', 'Phenotype', 'HP:0003536', (65, 94)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (47, 61)) 20752 28471419 In contrast, mutations predisposing to cancer susceptibility are heterozygous, require a second somatic genetic event (most generally the loss of the chromosomal region harbouring the wild-type allele), and then lead to the complete and selective loss of the enzymatic activity. ('loss', 'NegReg', (138, 142)) ('cancer', 'Disease', (39, 45)) ('cancer', 'Disease', 'MESH:D009369', (39, 45)) ('enzymatic activity', 'MPA', (259, 277)) ('cancer', 'Phenotype', 'HP:0002664', (39, 45)) ('loss', 'NegReg', (247, 251)) ('mutations', 'Var', (13, 22)) 20753 28471419 The first key allowing understanding the tumorigenesis pathways associated with TCA cycle mutations was the description, in the first French family of SDHD-related PGL, of increased angiogenesis and overexpression of the hypoxia inducible factor 2alpha (HIF2alpha) and one of its target, the vascular endothelial growth factor (VEGF). ('VEGF', 'Gene', '7422', (328, 332)) ('mutations', 'Var', (90, 99)) ('increased', 'PosReg', (172, 181)) ('hypoxia inducible factor 2alpha', 'Gene', (221, 252)) ('HIF2alpha', 'Gene', '2034', (254, 263)) ('TCA cycle', 'Gene', (80, 89)) ('vascular endothelial growth factor', 'Gene', (292, 326)) ('overexpression', 'PosReg', (199, 213)) ('angiogenesis', 'CPA', (182, 194)) ('vascular endothelial growth factor', 'Gene', '7422', (292, 326)) ('SDHD', 'Gene', (151, 155)) ('VEGF', 'Gene', (328, 332)) ('SDHD', 'Gene', '6392', (151, 155)) ('hypoxia inducible factor 2alpha', 'Gene', '2034', (221, 252)) ('TCA', 'Chemical', 'MESH:D014233', (80, 83)) ('HIF2alpha', 'Gene', (254, 263)) 20754 28471419 Transcriptomic studies further confirmed this initial observation by demonstrating that unsupervised classification of PPGL tumours allowed separating them into two major clusters of expression: cluster 1, characterized by a hypoxic signature, which comprised all TCA cycle mutations (cluster 1A) on one side and VHL and HIF2A mutated tumours (cluster 1B) on the other side, and cluster 2, regrouping RET, NF1, MAX, and TMEM127 related tumours, as well as most of the sporadic cases. ('RET', 'Gene', (401, 404)) ('NF1', 'Gene', (406, 409)) ('tumour', 'Phenotype', 'HP:0002664', (124, 130)) ('tumours', 'Disease', (335, 342)) ('HIF2A', 'Gene', '2034', (321, 326)) ('tumours', 'Phenotype', 'HP:0002664', (335, 342)) ('HIF2A', 'Gene', (321, 326)) ('PPGL tumours', 'Disease', 'MESH:D009369', (119, 131)) ('TMEM127', 'Gene', (420, 427)) ('tumours', 'Disease', 'MESH:D009369', (335, 342)) ('TCA', 'Chemical', 'MESH:D014233', (264, 267)) ('tumours', 'Disease', (436, 443)) ('VHL', 'Gene', (313, 316)) ('tumour', 'Phenotype', 'HP:0002664', (335, 341)) ('tumours', 'Phenotype', 'HP:0002664', (436, 443)) ('PPGL tumours', 'Disease', (119, 131)) ('TMEM127', 'Gene', '55654', (420, 427)) ('tumours', 'Disease', 'MESH:D009369', (436, 443)) ('RET', 'Gene', '5979', (401, 404)) ('tumours', 'Disease', (124, 131)) ('VHL', 'Gene', '7428', (313, 316)) ('TCA cycle', 'Gene', (264, 273)) ('tumour', 'Phenotype', 'HP:0002664', (436, 442)) ('NF1', 'Gene', '4763', (406, 409)) ('tumours', 'Phenotype', 'HP:0002664', (124, 131)) ('mutations', 'Var', (274, 283)) ('tumours', 'Disease', 'MESH:D009369', (124, 131)) 20766 28471419 Hence, SDH mutant cells, by reprogramming the transcriptome at the whole genome scale, foster tumorigenesis by repressing the expression of genes that promote cancer stem cell identity, and Epithelial-to-Mesenchymal Transition (EMT). ('cancer', 'Disease', (159, 165)) ('mutant', 'Var', (11, 17)) ('repressing', 'NegReg', (111, 121)) ('Epithelial-to-Mesenchymal Transition', 'CPA', (190, 226)) ('expression', 'MPA', (126, 136)) ('cancer', 'Phenotype', 'HP:0002664', (159, 165)) ('SDH', 'Gene', (7, 10)) ('promote', 'PosReg', (151, 158)) ('cancer', 'Disease', 'MESH:D009369', (159, 165)) ('foster', 'PosReg', (87, 93)) ('tumorigenesis', 'CPA', (94, 107)) 20768 28471419 Because of their central role in the acquisition of tumour hallmarks by SDH- and FH-deficient cells, succinate and fumarate are now referred to as "oncometabolites", as 2-hydroxyglutarate, the organic acid generated by mutant isocitrate dehydrogenase mutants in gliomas and acute myeloid leukaemia. ('gliomas', 'Disease', 'MESH:D005910', (262, 269)) ('FH-deficient', 'Disease', 'MESH:D006938', (81, 93)) ('tumour', 'Phenotype', 'HP:0002664', (52, 58)) ('tumour hallmarks', 'Disease', 'MESH:D009369', (52, 68)) ('isocitrate dehydrogenase', 'Gene', '3417', (226, 250)) ('acute myeloid leukaemia', 'Disease', (274, 297)) ('gliomas', 'Phenotype', 'HP:0009733', (262, 269)) ('tumour hallmarks', 'Disease', (52, 68)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (169, 187)) ('succinate', 'Chemical', 'MESH:D019802', (101, 110)) ('organic acid', 'Chemical', '-', (193, 205)) ('myeloid leukaemia', 'Phenotype', 'HP:0012324', (280, 297)) ('isocitrate dehydrogenase', 'Gene', (226, 250)) ('fumarate', 'Chemical', 'MESH:D005650', (115, 123)) ('mutant', 'Var', (219, 225)) ('gliomas', 'Disease', (262, 269)) ('acute myeloid leukaemia', 'Disease', 'MESH:D007938', (274, 297)) ('FH-deficient', 'Disease', (81, 93)) ('mutants', 'Var', (251, 258)) ('acute myeloid leukaemia', 'Phenotype', 'HP:0004808', (274, 297)) 20769 28471419 As discussed earlier, SDHx mutation carriers are at risk of developing multiple PPGLs, and SDHB-mutation carriers are predisposed to metastatic forms of the disease. ('SDHx', 'Gene', (22, 26)) ('SDHB', 'Gene', '6390', (91, 95)) ('SDHx', 'Chemical', '-', (22, 26)) ('PGLs', 'Phenotype', 'HP:0002668', (81, 85)) ('mutation', 'Var', (27, 35)) ('SDHB', 'Gene', (91, 95)) ('metastatic', 'CPA', (133, 143)) 20772 28471419 One promising strategy is based on an antiangiogenic approach that appears appropriate regarding the highly vascularized pattern and the activation of a VEFG-dependant angiogenesis of PPGL carrying SDHx mutations. ('PPGL', 'Gene', (184, 188)) ('SDHx', 'Gene', (198, 202)) ('mutations', 'Var', (203, 212)) ('SDHx', 'Chemical', '-', (198, 202)) 20773 28471419 The first six case reports of metastatic PPGLs treated with sunitinib were published almost simultaneously by four different teams showing extended partial response in patients carrying SDHB mutations. ('SDHB', 'Gene', (186, 190)) ('mutations', 'Var', (191, 200)) ('patients', 'Species', '9606', (168, 176)) ('PGLs', 'Phenotype', 'HP:0002668', (42, 46)) ('sunitinib', 'Chemical', 'MESH:D000077210', (60, 69)) ('SDHB', 'Gene', '6390', (186, 190)) 20774 28471419 The most comprehensive study reported so far is a retrospective review of medical records of 17 patients (including eight with an SDHB mutation and one VHL patient) with metastatic PPGLs who were treated with sunitinib. ('VHL', 'Gene', (152, 155)) ('VHL', 'Gene', '7428', (152, 155)) ('SDHB', 'Gene', '6390', (130, 134)) ('patient', 'Species', '9606', (96, 103)) ('PGLs', 'Phenotype', 'HP:0002668', (182, 186)) ('SDHB', 'Gene', (130, 134)) ('patients', 'Species', '9606', (96, 104)) ('mutation', 'Var', (135, 143)) ('patient', 'Species', '9606', (156, 163)) ('sunitinib', 'Chemical', 'MESH:D000077210', (209, 218)) 20776 28471419 Partial response or stable disease were observed in the patient with a VHL mutation and five of the six evaluable patients with an SDHB mutation, suggesting that patients with cluster 1 disease might be better responders to antiangiogenic treatments than patients with cluster 2 tumours. ('patient', 'Species', '9606', (255, 262)) ('VHL', 'Gene', '7428', (71, 74)) ('mutation', 'Var', (75, 83)) ('tumours', 'Phenotype', 'HP:0002664', (279, 286)) ('patient', 'Species', '9606', (56, 63)) ('patients', 'Species', '9606', (114, 122)) ('SDHB', 'Gene', '6390', (131, 135)) ('patients', 'Species', '9606', (162, 170)) ('cluster 1 disease', 'Disease', (176, 193)) ('mutation', 'Var', (136, 144)) ('tumour', 'Phenotype', 'HP:0002664', (279, 285)) ('cluster 1 disease', 'Disease', 'MESH:D003027', (176, 193)) ('patients', 'Species', '9606', (255, 263)) ('cluster 2 tumours', 'Disease', (269, 286)) ('VHL', 'Gene', (71, 74)) ('SDHB', 'Gene', (131, 135)) ('cluster 2 tumours', 'Disease', 'MESH:D003027', (269, 286)) ('patient', 'Species', '9606', (114, 121)) ('patient', 'Species', '9606', (162, 169)) 20780 28471419 Recently, two independent teams published the results of PT2399, a selective HIF-2 antagonist, in a preclinical model of clear cell renal carcinoma (ccRCC). ('carcinoma', 'Phenotype', 'HP:0030731', (138, 147)) ('clear cell renal carcinoma', 'Disease', 'MESH:C538614', (121, 147)) ('PT2399', 'Var', (57, 63)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (132, 147)) ('ccRCC', 'Phenotype', 'HP:0006770', (149, 154)) ('PT2399', 'Chemical', 'MESH:C000614278', (57, 63)) ('clear cell renal carcinoma', 'Disease', (121, 147)) ('RCC', 'Disease', 'MESH:C538614', (151, 154)) ('RCC', 'Disease', (151, 154)) ('RCC', 'Phenotype', 'HP:0005584', (151, 154)) ('clear cell renal carcinoma', 'Phenotype', 'HP:0006770', (121, 147)) 20781 28471419 Epigenetic alterations play major roles in establishing and maintaining aberrant gene expression profiles in cancer cells and in particular in the hypermethylated cluster M1 involving all PPGL with SDHx and FH mutations. ('SDHx', 'Gene', (198, 202)) ('mutations', 'Var', (210, 219)) ('SDHx', 'Chemical', '-', (198, 202)) ('cancer', 'Disease', 'MESH:D009369', (109, 115)) ('PPGL', 'Gene', (188, 192)) ('cancer', 'Disease', (109, 115)) ('FH', 'Gene', '2271', (207, 209)) ('aberrant gene expression profiles', 'MPA', (72, 105)) ('cancer', 'Phenotype', 'HP:0002664', (109, 115)) 20782 28471419 Targeting epigenetic alterations in cancer cells (epigenetic therapy) is a new frontier in drug discovery. ('cancer', 'Phenotype', 'HP:0002664', (36, 42)) ('epigenetic alterations', 'Var', (10, 32)) ('cancer', 'Disease', (36, 42)) ('cancer', 'Disease', 'MESH:D009369', (36, 42)) 20783 28471419 Reversion of DNA methylation by epidrugs such as 5-aza-2'-deoxycytidine (Decitabine) or histone methylation by histone methyl transferase inhibitors, is clearly an attractive strategy for carriers of SDHx or FH mutations. ("5-aza-2'-deoxycytidine", 'Chemical', 'MESH:D000077209', (49, 71)) ('mutations', 'Var', (211, 220)) ('FH', 'Gene', '2271', (208, 210)) ('Decitabine', 'Chemical', 'MESH:D000077209', (73, 83)) ('histone', 'MPA', (88, 95)) ('SDHx', 'Chemical', '-', (200, 204)) ('SDHx', 'Gene', (200, 204)) 20789 28471419 Indeed, in the first report involving a small retrospective cohort of 15 patients with progressive metastatic PPGL, temozolomide treatment was more effective in patients carrying SDHB mutations than in those without SDHB mutations. ('temozolomide', 'Chemical', 'MESH:D000077204', (116, 128)) ('mutations', 'Var', (184, 193)) ('SDHB', 'Gene', '6390', (179, 183)) ('SDHB', 'Gene', '6390', (216, 220)) ('patients', 'Species', '9606', (161, 169)) ('SDHB', 'Gene', (179, 183)) ('SDHB', 'Gene', (216, 220)) ('patients', 'Species', '9606', (73, 81)) 20791 28471419 During the last decade, many studies have shown that the majority of oncogenes and tumour suppressor genes are involved in cell metabolism and that mutations in these genes facilitate cell survival and proliferation by promoting the use of nutrients. ('tumour', 'Disease', (83, 89)) ('mutations', 'Var', (148, 157)) ('promoting', 'PosReg', (219, 228)) ('proliferation', 'CPA', (202, 215)) ('cell survival', 'CPA', (184, 197)) ('tumour', 'Phenotype', 'HP:0002664', (83, 89)) ('facilitate', 'PosReg', (173, 183)) ('tumour', 'Disease', 'MESH:D009369', (83, 89)) ('oncogenes', 'Gene', (69, 78)) ('use of nutrients', 'MPA', (233, 249)) 20792 28471419 As a central metabolic actor, alterations of enzymes in the TCA cycle result in important metabolic re-wiring in order to respond to bioenergetics and anabolic requests of cancer cells. ('cancer', 'Phenotype', 'HP:0002664', (172, 178)) ('alterations', 'Var', (30, 41)) ('cancer', 'Disease', 'MESH:D009369', (172, 178)) ('cancer', 'Disease', (172, 178)) ('metabolic re-wiring', 'MPA', (90, 109)) ('result in', 'Reg', (70, 79)) ('TCA', 'Chemical', 'MESH:D014233', (60, 63)) 20794 28471419 Hence, mutations in SDHx genes were demonstrated to mediate a rise in contribution of glucose to ATP production and glutamine to TCA cycle intermediates in an ovarian cancer model. ('ovarian cancer', 'Disease', (159, 173)) ('TCA', 'Chemical', 'MESH:D014233', (129, 132)) ('contribution', 'MPA', (70, 82)) ('rise', 'PosReg', (62, 66)) ('glucose', 'MPA', (86, 93)) ('SDHx', 'Gene', (20, 24)) ('glutamine', 'Chemical', 'MESH:D005973', (116, 125)) ('SDHx', 'Chemical', '-', (20, 24)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (159, 173)) ('ATP', 'Chemical', 'MESH:D000255', (97, 100)) ('cancer', 'Phenotype', 'HP:0002664', (167, 173)) ('ovarian cancer', 'Disease', 'MESH:D010051', (159, 173)) ('glucose', 'Chemical', 'MESH:D005947', (86, 93)) ('glutamine to TCA cycle intermediates', 'MPA', (116, 152)) ('mutations', 'Var', (7, 16)) 20795 28471419 Recently, two independent studies demonstrated that loss of SDH activity through Sdhb deletion in a mouse cellular model results in their dependence on the pyruvate carboxylase (PC) enzyme, responsible for pyruvate carboxylation to synthesize oxaloacetate (OAA) (Figure 1). ('SDH', 'Gene', (60, 63)) ('pyruvate carboxylase', 'Gene', '18563', (156, 176)) ('dependence', 'MPA', (138, 148)) ('loss', 'NegReg', (52, 56)) ('OAA', 'Chemical', 'MESH:D062907', (257, 260)) ('Sdhb', 'Gene', (81, 85)) ('mouse', 'Species', '10090', (100, 105)) ('pyruvate', 'Chemical', 'MESH:D019289', (206, 214)) ('PC', 'Gene', '18563', (178, 180)) ('Sdhb', 'Gene', '67680', (81, 85)) ('activity', 'MPA', (64, 72)) ('oxaloacetate', 'Chemical', 'MESH:D062907', (243, 255)) ('pyruvate', 'Chemical', 'MESH:D019289', (156, 164)) ('pyruvate carboxylase', 'Gene', (156, 176)) ('deletion', 'Var', (86, 94)) 20796 28471419 Despite the TCA cycle truncation, cells can use OAA as a TCA cycle intermediate in order to produce aspartate, a key metabolic pivot in the cell (the main precursor for protein and nucleotide biosynthesis). ('TCA', 'Chemical', 'MESH:D014233', (57, 60)) ('aspartate', 'MPA', (100, 109)) ('OAA', 'Chemical', 'MESH:D062907', (48, 51)) ('truncation', 'Var', (22, 32)) ('TCA', 'Chemical', 'MESH:D014233', (12, 15)) ('aspartate', 'Chemical', 'MESH:D001224', (100, 109)) 20797 28471419 Moreover, in vitro silencing of PC resulted in complete ablation of proliferation and loss of viability. ('proliferation', 'CPA', (68, 81)) ('loss', 'NegReg', (86, 90)) ('PC', 'Gene', '18563', (32, 34)) ('ablation', 'NegReg', (56, 64)) ('silencing', 'Var', (19, 28)) ('viability', 'CPA', (94, 103)) 20798 28471419 Although it is unlikely that PC targeting would be appropriate in patients, deciphering the metabolic pathways associated with TCA cycle mutations may reveal important and novel therapeutic targets for the management of these tumours. ('TCA cycle', 'Gene', (127, 136)) ('tumour', 'Phenotype', 'HP:0002664', (226, 232)) ('TCA', 'Chemical', 'MESH:D014233', (127, 130)) ('tumours', 'Phenotype', 'HP:0002664', (226, 233)) ('mutations', 'Var', (137, 146)) ('tumours', 'Disease', 'MESH:D009369', (226, 233)) ('tumours', 'Disease', (226, 233)) ('patients', 'Species', '9606', (66, 74)) ('PC', 'Gene', '18563', (29, 31)) 20805 28471419 18F-FDG PET/CT is therefore already considered a standard examination for complete staging in patients with an SDHx mutation and for the evaluation of early response to treatment. ('patients', 'Species', '9606', (94, 102)) ('mutation', 'Var', (116, 124)) ('18F-FDG', 'Chemical', 'MESH:D019788', (0, 7)) ('SDHx', 'Gene', (111, 115)) ('SDHx', 'Chemical', '-', (111, 115)) 20807 28471419 SDH inactivation leads to a massive accumulation of succinate, acting as an oncometabolite, and its levels, assessed on surgically resected tissues, are a highly specific biomarker of SDHx-mutated tumours. ('inactivation', 'Var', (4, 16)) ('tumours', 'Disease', 'MESH:D009369', (197, 204)) ('tumours', 'Disease', (197, 204)) ('SDH', 'Gene', (0, 3)) ('SDHx', 'Chemical', '-', (184, 188)) ('succinate', 'MPA', (52, 61)) ('accumulation', 'PosReg', (36, 48)) ('tumours', 'Phenotype', 'HP:0002664', (197, 204)) ('tumour', 'Phenotype', 'HP:0002664', (197, 203)) ('succinate', 'Chemical', 'MESH:D019802', (52, 61)) 20811 28471419 The majority (50-86%) of gliomas diagnosed in younger adults (<45 years old) have recurrent somatic mutations in one of the genes encoding isocitrate dehydrogenase (IDH1 and IDH2) leading to the overproduction of 2-hydroxyglutarate, an oncometabolite that plays a key role in malignant transformation and is interestingly detectable in vivo by 1H-MRS. A pulse 1H-MRS sequence was previously developed to measure succinate in an allografted mouse model of Sdhb-deficient tumours and used in a pilot study performed in nine patients with PPGL (five with SDHx mutations and four sporadic cases). ('mutations', 'Var', (557, 566)) ('PPGL', 'Gene', (536, 540)) ('SDHx', 'Gene', (552, 556)) ('IDH2', 'Gene', (174, 178)) ('IDH2', 'Gene', '3418', (174, 178)) ('patients', 'Species', '9606', (522, 530)) ('isocitrate dehydrogenase', 'Gene', '3417', (139, 163)) ('SDHx', 'Chemical', '-', (552, 556)) ('IDH1', 'Gene', (165, 169)) ('tumours', 'Phenotype', 'HP:0002664', (470, 477)) ('Sdhb-deficient tumours', 'Disease', 'MESH:D009369', (455, 477)) ('gliomas', 'Disease', (25, 32)) ('succinate', 'Chemical', 'MESH:D019802', (412, 421)) ('tumour', 'Phenotype', 'HP:0002664', (470, 476)) ('Sdhb-deficient tumours', 'Disease', (455, 477)) ('IDH1', 'Gene', '3417', (165, 169)) ('gliomas', 'Disease', 'MESH:D005910', (25, 32)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (213, 231)) ('1H', 'Chemical', '-', (360, 362)) ('isocitrate dehydrogenase', 'Gene', (139, 163)) ('mouse', 'Species', '10090', (440, 445)) ('1H', 'Chemical', '-', (344, 346)) ('gliomas', 'Phenotype', 'HP:0009733', (25, 32)) 20812 28471419 That pilot study demonstrated the feasibility of detecting succinate in vivo by 1H-MRS as a very specific biomarker of SDHx mutations. ('mutations', 'Var', (124, 133)) ('SDHx', 'Chemical', '-', (119, 123)) ('succinate', 'MPA', (59, 68)) ('SDHx', 'Gene', (119, 123)) ('1H', 'Chemical', '-', (80, 82)) ('succinate', 'Chemical', 'MESH:D019802', (59, 68)) 20855 21098082 Its efficacy depends on the [131I]-MIBG concentration reached within the tumor through its uptake via the norepinephrine transporter and retention in neurosecretory granules. ('norepinephrine transporter', 'Gene', '20538', (106, 132)) ('tumor', 'Disease', 'MESH:D009369', (73, 78)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('norepinephrine transporter', 'Gene', (106, 132)) ('uptake', 'MPA', (91, 97)) ('[131I]-MIBG', 'Chemical', 'MESH:D019797', (28, 39)) ('tumor', 'Disease', (73, 78)) ('[131I]-MIBG', 'Var', (28, 39)) 20863 21098082 These results suggest that HDAC inhibitors could enhance the therapeutic efficacy of [131I]-MIBG treatment in patients with malignant pheochromocytoma. ('HDAC', 'Gene', '9734', (27, 31)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (134, 150)) ('enhance', 'PosReg', (49, 56)) ('-MIBG', 'Gene', (91, 96)) ('[131I]-MIBG', 'Chemical', 'MESH:D019797', (85, 96)) ('[131I', 'Var', (85, 90)) ('therapeutic', 'MPA', (61, 72)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (124, 150)) ('malignant pheochromocytoma', 'Disease', (124, 150)) ('patients', 'Species', '9606', (110, 118)) ('HDAC', 'Gene', (27, 31)) 20868 21098082 [131I]-MIBG is one of the most effective therapies because it specifically targets chromaffin and pheochromocytoma cells. ('[131I]-MIBG', 'Chemical', 'MESH:D019797', (0, 11)) ('pheochromocytoma', 'Disease', (98, 114)) ('chromaffin', 'Chemical', '-', (83, 93)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (98, 114)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (98, 114)) ('[131I]-MIBG', 'Var', (0, 11)) ('chromaffin', 'Disease', (83, 93)) 20883 21098082 We examined the effects of HDAC inhibition on proliferation, uptake of [3H]-norepinephrine, [123I]-MIBG, and [18F]-fluorodopamine, and norepinephrine transporter expression in MPC cells. ('norepinephrine transporter', 'Gene', (135, 161)) ('HDAC', 'Gene', '9734', (27, 31)) ('amine', 'Chemical', 'MESH:D000588', (5, 10)) ('[18F]-fluorodopamine', 'Chemical', '-', (109, 129)) ('uptake of [3H]-norepinephrine', 'MPA', (61, 90)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (92, 103)) ('[3H]-norepinephrine', 'Chemical', '-', (71, 90)) ('[123I]-MIBG', 'Var', (92, 103)) ('norepinephrine transporter', 'Gene', '20538', (135, 161)) ('amine', 'Chemical', 'MESH:D000588', (124, 129)) ('HDAC', 'Gene', (27, 31)) 20974 21098082 Figure 4 demonstrates no relationship between tumor size and uptake of either [18F]-fluorodopamine or [123I]-MIBG in both the control and HDAC inhibitor-treated groups. ('HDAC', 'Gene', (138, 142)) ('tumor', 'Phenotype', 'HP:0002664', (46, 51)) ('HDAC', 'Gene', '9734', (138, 142)) ('uptake', 'MPA', (61, 67)) ('tumor', 'Disease', (46, 51)) ('[18F]-fluorodopamine', 'Chemical', '-', (78, 98)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (102, 113)) ('[123I]-MIBG', 'Var', (102, 113)) ('tumor', 'Disease', 'MESH:D009369', (46, 51)) 20975 21098082 If the increased uptake of [18F]-fluorodopamine and [123I]-MIBG by liver tumors is independent of tumor size, it must be an effect of increased expression of the norepinephrine transporter. ('norepinephrine transporter', 'Gene', (162, 188)) ('increased', 'PosReg', (7, 16)) ('tumor', 'Disease', 'MESH:D009369', (73, 78)) ('liver tumors', 'Disease', (67, 79)) ('liver tumors', 'Phenotype', 'HP:0002896', (67, 79)) ('tumor', 'Disease', 'MESH:D009369', (98, 103)) ('liver tumor', 'Phenotype', 'HP:0002896', (67, 78)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('norepinephrine transporter', 'Gene', '20538', (162, 188)) ('[123I', 'Var', (52, 57)) ('tumors', 'Phenotype', 'HP:0002664', (73, 79)) ('uptake', 'MPA', (17, 23)) ('tumor', 'Disease', (73, 78)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('tumor', 'Disease', (98, 103)) ('[18F]-fluorodopamine', 'Chemical', '-', (27, 47)) ('liver tumors', 'Disease', 'MESH:D008113', (67, 79)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (52, 63)) 20984 21098082 HDAC inhibitors can induce growth arrest, differentiation and/or apoptosis in various tumor cell lines. ('HDAC', 'Gene', (0, 4)) ('induce', 'Reg', (20, 26)) ('differentiation', 'CPA', (42, 57)) ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('HDAC', 'Gene', '9734', (0, 4)) ('growth arrest', 'Phenotype', 'HP:0001510', (27, 40)) ('tumor', 'Disease', (86, 91)) ('inhibitors', 'Var', (5, 15)) ('apoptosis', 'CPA', (65, 74)) ('growth arrest', 'Disease', 'MESH:D006323', (27, 40)) ('growth arrest', 'Disease', (27, 40)) ('tumor', 'Disease', 'MESH:D009369', (86, 91)) 20991 21098082 Response rates are increased with higher doses of [131I]-MIBG, but higher doses are associated with greater toxicity. ('[131I]-MIBG', 'Var', (50, 61)) ('Response', 'MPA', (0, 8)) ('toxicity', 'Disease', 'MESH:D064420', (108, 116)) ('toxicity', 'Disease', (108, 116)) ('increased', 'PosReg', (19, 28)) ('[131I]-MIBG', 'Chemical', 'MESH:D019797', (50, 61)) 20993 21098082 High doses of [131I]-MIBG increase the long term risk of a second malignant neoplasm. ('malignant neoplasm', 'Disease', 'MESH:D009369', (66, 84)) ('[131I]-MIBG', 'Chemical', 'MESH:D019797', (14, 25)) ('neoplasm', 'Phenotype', 'HP:0002664', (76, 84)) ('[131I]-MIBG', 'Var', (14, 25)) ('malignant neoplasm', 'Disease', (66, 84)) 20994 21098082 One way of increasing the efficacy of [131I]-MIBG, while at the same time decreasing nonspecific uptake in non-target tissues, is to increase the expression of the norepinephrine transporter in the tumor cells. ('norepinephrine transporter', 'Gene', '20538', (164, 190)) ('tumor', 'Disease', 'MESH:D009369', (198, 203)) ('decreasing', 'NegReg', (74, 84)) ('[131I]-MIBG', 'Var', (38, 49)) ('efficacy', 'MPA', (26, 34)) ('tumor', 'Phenotype', 'HP:0002664', (198, 203)) ('norepinephrine transporter', 'Gene', (164, 190)) ('increasing', 'PosReg', (11, 21)) ('increase', 'PosReg', (133, 141)) ('nonspecific uptake in non-target tissues', 'MPA', (85, 125)) ('tumor', 'Disease', (198, 203)) ('expression', 'MPA', (146, 156)) ('[131I]-MIBG', 'Chemical', 'MESH:D019797', (38, 49)) 21007 21098082 Increased uptake of both [18F]-fluorodopamine and [123I]-MIBG in inhibitor-treated liver tumors compared to that in control liver tumors in vivo confirmed our in vitro findings. ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('liver tumor', 'Phenotype', 'HP:0002896', (83, 94)) ('[123I', 'Var', (50, 55)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (50, 61)) ('liver tumor', 'Phenotype', 'HP:0002896', (124, 135)) ('liver tumors', 'Disease', 'MESH:D008113', (83, 95)) ('liver tumors', 'Disease', 'MESH:D008113', (124, 136)) ('liver tumors', 'Disease', (83, 95)) ('Increased', 'PosReg', (0, 9)) ('liver tumors', 'Phenotype', 'HP:0002896', (124, 136)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('liver tumors', 'Disease', (124, 136)) ('[18F]-fluorodopamine', 'Chemical', '-', (25, 45)) ('liver tumors', 'Phenotype', 'HP:0002896', (83, 95)) ('tumors', 'Phenotype', 'HP:0002664', (130, 136)) ('uptake', 'MPA', (10, 16)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) 21024 21098082 First, our results need to be confirmed with [123\131I]-MIBG scintigraphy coupled with dosimetry measurements in patients with metastatic pheochromocytoma. ('pheochromocytoma', 'Disease', (138, 154)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (138, 154)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (138, 154)) ('patients', 'Species', '9606', (113, 121)) ('[123\\131I]-MIBG', 'Chemical', '-', (45, 60)) ('[123\\131I]', 'Var', (45, 55)) 21027 21098082 However, there is also a possibility that such results could also be more impressive, as [131I]-MIBG may exhibit greater uptake due to increased expression of the norepinephrine transporter. ('norepinephrine transporter', 'Gene', (163, 189)) ('[131I]-MIBG', 'Chemical', 'MESH:D019797', (89, 100)) ('[131I]-MIBG', 'Var', (89, 100)) ('increased', 'PosReg', (135, 144)) ('expression', 'MPA', (145, 155)) ('norepinephrine transporter', 'Gene', '20538', (163, 189)) ('greater', 'PosReg', (113, 120)) ('uptake', 'MPA', (121, 127)) 21101 24235841 For instance, one could assume that mutations or alterations to the genomic profile of our patient's tumor made it especially sensitive to sorafenib. ('alterations', 'Reg', (49, 60)) ('sorafenib', 'Chemical', 'MESH:D000077157', (139, 148)) ('tumor', 'Disease', (101, 106)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('mutations', 'Var', (36, 45)) ('sensitive', 'MPA', (126, 135)) ('patient', 'Species', '9606', (91, 98)) ('tumor', 'Disease', 'MESH:D009369', (101, 106)) 21106 33252357 Certainly, depending on the mutated gene, and the activated intracellular signalling pathways, as well as their metastatic potential, each tumour is immensely different. ('tumour', 'Disease', (139, 145)) ('mutated', 'Var', (28, 35)) ('tumour', 'Phenotype', 'HP:0002664', (139, 145)) ('metastatic potential', 'CPA', (112, 132)) ('tumour', 'Disease', 'MESH:D009369', (139, 145)) 21121 33252357 Mutations have been identified in more than 15 genes and, based on gene profiling, PPGLs can be assigned to three different 'clusters' (for recent reviews on the genetic/phenotype correlations of PPGLs see:). ('PGLs', 'Phenotype', 'HP:0002668', (197, 201)) ('PGLs', 'Phenotype', 'HP:0002668', (84, 88)) ('PPGLs', 'Chemical', '-', (196, 201)) ('Mutations', 'Var', (0, 9)) ('PPGLs', 'Chemical', '-', (83, 88)) ('PPGLs', 'Gene', (83, 88)) 21122 33252357 PPGLs with mutations in genes encoding the hypoxia-inducible factor (HIF) 2alpha, von Hippel-Lindau tumour suppressor (VHL), prolyl hydroxylase domain (PHD), fumarate hydratase (FH), and succinate dehydrogenase subunits (SDHx) are included in cluster 1. ('mutations', 'Var', (11, 20)) ('rat', 'Species', '10116', (162, 165)) ('FH', 'Disease', 'MESH:D006938', (178, 180)) ('VHL', 'Gene', (119, 122)) ('rat', 'Species', '10116', (170, 173)) ('tumour', 'Phenotype', 'HP:0002664', (100, 106)) ('PPGLs', 'Chemical', '-', (0, 5)) ('VHL', 'Gene', '22346', (119, 122)) ('succinate', 'Chemical', 'MESH:D019802', (187, 196)) ('fumarate', 'Chemical', 'MESH:D005650', (158, 166)) ('von Hippel-Lindau tumour', 'Disease', 'MESH:D006623', (82, 106)) ('PHD', 'Disease', 'MESH:D011547', (152, 155)) ('PHD', 'Disease', (152, 155)) ('von Hippel-Lindau tumour', 'Disease', (82, 106)) ('hypoxia-inducible factor (HIF) 2alpha', 'Gene', '13819', (43, 80)) ('PGLs', 'Phenotype', 'HP:0002668', (1, 5)) 21124 33252357 Intriguingly, tumours mutated in one of the enzymes involved in the Krebs cycle are more aggressive than others, showing an elevated metastatic potential. ('Krebs', 'Chemical', '-', (68, 73)) ('tumours', 'Phenotype', 'HP:0002664', (14, 21)) ('mutated', 'Var', (22, 29)) ('metastatic potential', 'CPA', (133, 153)) ('tumour', 'Phenotype', 'HP:0002664', (14, 20)) ('tumours', 'Disease', 'MESH:D009369', (14, 21)) ('tumours', 'Disease', (14, 21)) ('elevated', 'PosReg', (124, 132)) ('aggressive', 'CPA', (89, 99)) 21125 33252357 Cluster 2 includes PPGLs with mutations in the RE arranged during Transfection (RET) proto-oncogene, Neurofibromatosis type 1 (NF1) tumour suppressor gene, TransMEMbrane protein (TMEM127) gene, Harvey rat sarcoma viral oncogene homolog (HRAS) and MYC Associated Factor X (MAX) gene. ('PPGLs', 'Chemical', '-', (19, 24)) ('NF1', 'Gene', '18015', (127, 130)) ('sarcoma', 'Disease', 'MESH:D012509', (205, 212)) ('HRAS', 'Gene', (237, 241)) ('sarcoma', 'Disease', (205, 212)) ('MYC Associated Factor X', 'Gene', (247, 270)) ('TMEM127', 'Gene', '311405', (179, 186)) ('MAX', 'Gene', '60661', (272, 275)) ('NF1', 'Gene', (127, 130)) ('tumour', 'Phenotype', 'HP:0002664', (132, 138)) ('tumour', 'Disease', 'MESH:D009369', (132, 138)) ('tumour', 'Disease', (132, 138)) ('MAX', 'Gene', (272, 275)) ('Neurofibromatosis type 1', 'Disease', (101, 125)) ('sarcoma', 'Phenotype', 'HP:0100242', (205, 212)) ('HRAS', 'Gene', '293621', (237, 241)) ('Neurofibromatosis type 1', 'Disease', 'MESH:C537392', (101, 125)) ('MYC Associated Factor X', 'Gene', '60661', (247, 270)) ('PGLs', 'Phenotype', 'HP:0002668', (20, 24)) ('mutations', 'Var', (30, 39)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (101, 118)) ('TMEM127', 'Gene', (179, 186)) ('rat', 'Species', '10116', (201, 204)) 21127 33252357 Recently, introducing also a cluster 3 has been suggested, which includes tumours associated with mutations in the Mastermind Like Transcriptional Coactivator 3 (MAML3) gene, which is involved in the Wnt signalling pathway. ('Mastermind Like Transcriptional Coactivator 3', 'Gene', '433586', (115, 160)) ('Mastermind Like Transcriptional Coactivator 3', 'Gene', (115, 160)) ('tumours', 'Phenotype', 'HP:0002664', (74, 81)) ('MAML3', 'Gene', '433586', (162, 167)) ('tumours', 'Disease', 'MESH:D009369', (74, 81)) ('mutations', 'Var', (98, 107)) ('MAML3', 'Gene', (162, 167)) ('tumours', 'Disease', (74, 81)) ('tumour', 'Phenotype', 'HP:0002664', (74, 80)) 21135 33252357 Mutations in some of the susceptibility genes cause an impairment of the Krebs cycle, resulting in an accumulation of the oncometabolites succinate, fumarate, or 2-hydroxyglutarate, that in turn leads to the inhibition of PHD1/2. ('fumarate', 'MPA', (149, 157)) ('inhibition', 'NegReg', (208, 218)) ('accumulation', 'PosReg', (102, 114)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (162, 180)) ('impairment', 'NegReg', (55, 65)) ('oncometabolites succinate', 'MPA', (122, 147)) ('PHD1/2', 'Gene', (222, 228)) ('Mutations', 'Var', (0, 9)) ('2-hydroxyglutarate', 'MPA', (162, 180)) ('Krebs cycle', 'Enzyme', (73, 84)) ('PHD1/2', 'Gene', '112406;112405', (222, 228)) ('fumarate', 'Chemical', 'MESH:D005650', (149, 157)) ('Krebs', 'Chemical', '-', (73, 78)) ('succinate', 'Chemical', 'MESH:D019802', (138, 147)) 21136 33252357 Inactivation of PHD1/2 results in a decrease of HIF-alpha hydroxylation that cannot be degraded any longer. ('PHD1/2', 'Gene', (16, 22)) ('HIF-alpha hydroxylation', 'MPA', (48, 71)) ('PHD1/2', 'Gene', '112406;112405', (16, 22)) ('Inactivation', 'Var', (0, 12)) ('decrease', 'NegReg', (36, 44)) 21137 33252357 Therefore, cluster 1 mutations promote angiogenesis, tumour invasion, and metastasis. ('tumour invasion', 'Disease', 'MESH:D009361', (53, 68)) ('tumour invasion', 'Disease', (53, 68)) ('angiogenesis', 'CPA', (39, 51)) ('cluster 1', 'Gene', (11, 20)) ('metastasis', 'CPA', (74, 84)) ('promote', 'PosReg', (31, 38)) ('tumour', 'Phenotype', 'HP:0002664', (53, 59)) ('mutations', 'Var', (21, 30)) 21138 33252357 Mutations of genes belonging to cluster 2 lead to activation of the phosphatidylinositol-3-kinase (PI3K)/AKT, mammalian target of rapamycin (mTORC1)/p70S6 kinase (p70S6K), and RAS/RAF/ERK signalling pathways, which in turn promote cell proliferation, survival, cancer development and angiogenesis. ('AKT', 'Gene', '207', (105, 108)) ('p70S6K', 'Gene', '6198', (163, 169)) ('mammalian target of rapamycin', 'Gene', (110, 139)) ('survival', 'CPA', (251, 259)) ('activation', 'PosReg', (50, 60)) ('phosphatidylinositol-3-kinase', 'Gene', '5290', (68, 97)) ('Mutations', 'Var', (0, 9)) ('cancer', 'Disease', (261, 267)) ('promote', 'PosReg', (223, 230)) ('cell proliferation', 'CPA', (231, 249)) ('angiogenesis', 'CPA', (284, 296)) ('cancer', 'Phenotype', 'HP:0002664', (261, 267)) ('rat', 'Species', '10116', (243, 246)) ('ERK', 'Gene', (184, 187)) ('RAF', 'Gene', '109880', (180, 183)) ('AKT', 'Gene', (105, 108)) ('phosphatidylinositol-3-kinase', 'Gene', (68, 97)) ('p70S6K', 'Gene', (163, 169)) ('mTORC1', 'Gene', (141, 147)) ('ERK', 'Gene', '2048', (184, 187)) ('mTORC1', 'Gene', '382056', (141, 147)) ('RAF', 'Gene', (180, 183)) ('mammalian target of rapamycin', 'Gene', '2475', (110, 139)) ('cancer', 'Disease', 'MESH:D009369', (261, 267)) 21140 33252357 Conversely, cluster 1 tumours, even those occurring in the adrenal gland, which are often associated with VHL mutations, do not produce significant A. Tumours mutated for the Cold Shock Domain-containing E1 (CSDE1) and the MAML3 fusion genes belong to cluster 3. ('CSDE1', 'Gene', '229663', (208, 213)) ('MAML3', 'Gene', '433586', (223, 228)) ('tumours', 'Phenotype', 'HP:0002664', (22, 29)) ('mutated', 'Var', (159, 166)) ('tumours', 'Disease', 'MESH:D009369', (22, 29)) ('VHL', 'Gene', '22346', (106, 109)) ('Cold Shock Domain-containing E1', 'Gene', (175, 206)) ('tumours', 'Disease', (22, 29)) ('CSDE1', 'Gene', (208, 213)) ('Shock', 'Phenotype', 'HP:0031273', (180, 185)) ('VHL', 'Gene', (106, 109)) ('MAML3', 'Gene', (223, 228)) ('tumour', 'Phenotype', 'HP:0002664', (22, 28)) ('Cold Shock Domain-containing E1', 'Gene', '229663', (175, 206)) ('Tumours', 'Phenotype', 'HP:0002664', (151, 158)) 21141 33252357 MAML3 mutations lead to over-activation of Wnt and Hedgehog signalling and MAML3-mutated PPGLs showed elevated Ki-67 expression, aggressive behaviour and early metastatic spread. ('MAML3', 'Gene', (75, 80)) ('Ki-67', 'Gene', '17345', (111, 116)) ('expression', 'MPA', (117, 127)) ('elevated', 'PosReg', (102, 110)) ('MAML3', 'Gene', (0, 5)) ('early metastatic spread', 'CPA', (154, 177)) ('Ki-67', 'Gene', (111, 116)) ('PPGLs', 'Chemical', '-', (89, 94)) ('over-activation', 'PosReg', (24, 39)) ('aggressive behaviour', 'Phenotype', 'HP:0000718', (129, 149)) ('MAML3', 'Gene', '433586', (75, 80)) ('PPGLs', 'Gene', (89, 94)) ('PGLs', 'Phenotype', 'HP:0002668', (90, 94)) ('MAML3', 'Gene', '433586', (0, 5)) ('aggressive behaviour', 'CPA', (129, 149)) ('mutations', 'Var', (6, 15)) 21142 33252357 CSDE1 mutations lead to over-activation of beta-catenin, a target of Wnt signalling, and favour tumour proliferation, invasion, and metastases. ('rat', 'Species', '10116', (110, 113)) ('beta-catenin', 'Gene', '12387', (43, 55)) ('tumour', 'Disease', (96, 102)) ('metastases', 'Disease', (132, 142)) ('tumour', 'Phenotype', 'HP:0002664', (96, 102)) ('over-activation', 'PosReg', (24, 39)) ('CSDE1', 'Gene', '229663', (0, 5)) ('tumour', 'Disease', 'MESH:D009369', (96, 102)) ('metastases', 'Disease', 'MESH:D009362', (132, 142)) ('favour', 'PosReg', (89, 95)) ('invasion', 'CPA', (118, 126)) ('beta-catenin', 'Gene', (43, 55)) ('mutations', 'Var', (6, 15)) ('CSDE1', 'Gene', (0, 5)) 21159 33252357 constructed a mouse strain with a knock-out (KO) mutation of Nf1, the murine counterpart of NF1. ('mouse', 'Species', '10090', (14, 19)) ('Nf1', 'Gene', '18015', (61, 64)) ('mutation', 'Var', (49, 57)) ('NF1', 'Gene', (92, 95)) ('murine', 'Species', '10090', (70, 76)) ('NF1', 'Gene', '18015', (92, 95)) ('Nf1', 'Gene', (61, 64)) 21162 33252357 A few years later, in the same laboratory, five mouse PCC cell lines (MPC) were stabilised from primary cultures of PCCs arising in mice with a Nf1 heterozygous KO mutation. ('PCC', 'Gene', (54, 57)) ('MPC', 'Chemical', '-', (70, 73)) ('mouse', 'Species', '10090', (48, 53)) ('Nf1', 'Gene', '18015', (144, 147)) ('PCCs', 'Phenotype', 'HP:0002666', (116, 120)) ('PCC', 'Gene', (116, 119)) ('Nf1', 'Gene', (144, 147)) ('KO mutation', 'Var', (161, 172)) ('mice', 'Species', '10090', (132, 136)) ('PCC', 'Gene', '1421', (54, 57)) ('rat', 'Species', '10116', (35, 38)) ('PCC', 'Gene', '1421', (116, 119)) 21174 33252357 Several cell lines were then derived from MPC and MTT to improve and diversify research studies, with a particular interest in SDHB mutations, because mutations in this gene represent a high-risk factor for malignancy and poor prognosis. ('MPC', 'Chemical', '-', (42, 45)) ('mutations', 'Var', (132, 141)) ('MTT', 'Chemical', '-', (50, 53)) ('malignancy', 'Disease', 'MESH:D009369', (207, 217)) ('SDHB', 'Gene', (127, 131)) ('malignancy', 'Disease', (207, 217)) ('mutations', 'Var', (151, 160)) 21175 33252357 To assess possible associations between SDHB gene mutations and invasiveness, Richter and colleagues established an MTT SDHB knockdown by viral transduction with lentiviral particles. ('MTT', 'Chemical', '-', (116, 119)) ('knockdown', 'Var', (125, 134)) ('SDHB', 'Gene', (40, 44)) ('SDHB', 'Gene', (120, 124)) 21176 33252357 Of note, one of the shortcomings of silencing the SDHB subunit in an Nf1 heterozygous KO mouse is the mixing of the phenotypes of clusters 1 and 2. ('SDHB', 'Gene', (50, 54)) ('Nf1', 'Gene', (69, 72)) ('silencing', 'Var', (36, 45)) ('Nf1', 'Gene', '18015', (69, 72)) ('mouse', 'Species', '10090', (89, 94)) 21192 33252357 Subsequently, chromaffin cells were isolated from the adrenal medulla, and deleted for SDHB by Cre-mediated recombination. ('chromaffin', 'Chemical', '-', (14, 24)) ('SDHB', 'Gene', (87, 91)) ('deleted', 'Var', (75, 82)) 21194 33252357 Later on, Morin et al demonstrated that, in these SDHB-deficient cells, hypermethylation and pseudohypoxia act synergistically leading to the acquisition of metastatic treats. ('pseudohypoxia', 'Disease', 'None', (93, 106)) ('rat', 'Species', '10116', (29, 32)) ('hypermethylation', 'Var', (72, 88)) ('SDHB-deficient', 'Gene', (50, 64)) ('metastatic treats', 'CPA', (157, 174)) ('leading to', 'Reg', (127, 137)) ('acquisition', 'PosReg', (142, 153)) ('pseudohypoxia', 'Disease', (93, 106)) 21195 33252357 developed two cell lines of SDH-deficient chromaffin cells from rats with a heterozygous germline SDHB mutation. ('mutation', 'Var', (103, 111)) ('SDHB', 'Gene', (98, 102)) ('chromaffin', 'Chemical', '-', (42, 52)) ('rats', 'Species', '10116', (64, 68)) 21196 33252357 Heterozygous Sdhb+/- founder rats were generated with various deletions in the rat SDHB gene: offspring were irradiated and maintained until they were killed. ('SDHB', 'Gene', (83, 87)) ('Sdhb', 'Gene', (13, 17)) ('rat', 'Species', '10116', (29, 32)) ('rat', 'Species', '10116', (43, 46)) ('Sdhb', 'Gene', '298596', (13, 17)) ('deletions', 'Var', (62, 71)) ('rat', 'Species', '10116', (79, 82)) ('rats', 'Species', '10116', (29, 33)) 21203 33252357 The genome, transcriptome and metabolome of RS0 closely resemble those of SDHB-mutated human PPGLs, representing the only real cell model deriving from cluster 1 tumours. ('tumours', 'Disease', 'MESH:D009369', (162, 169)) ('tumours', 'Disease', (162, 169)) ('RS0', 'Var', (44, 47)) ('human', 'Species', '9606', (87, 92)) ('tumour', 'Phenotype', 'HP:0002664', (162, 168)) ('tumours', 'Phenotype', 'HP:0002664', (162, 169)) ('PPGLs', 'Chemical', '-', (93, 98)) ('PGLs', 'Phenotype', 'HP:0002668', (94, 98)) 21208 33252357 In fact, genetically engineered mice with SDHB mutations have failed to develop SDH-deficient PPGLs. ('SDH-deficient PPGLs', 'Disease', 'MESH:D007153', (80, 99)) ('PGLs', 'Phenotype', 'HP:0002668', (95, 99)) ('mutations', 'Var', (47, 56)) ('SDH-deficient PPGLs', 'Disease', (80, 99)) ('mice', 'Species', '10090', (32, 36)) ('SDHB', 'Gene', (42, 46)) 21233 33252357 Indeed, patients harbouring RET gain of function mutations develop MEN 2 syndrome. ('MEN 2 syndrome', 'Disease', (67, 81)) ('gain of function', 'PosReg', (32, 48)) ('mutations', 'Var', (49, 58)) ('MEN', 'Species', '9606', (67, 70)) ('patients', 'Species', '9606', (8, 16)) 21234 33252357 PCCs in Pten KO mice show consistent deletions in mouse chromosome 4, which is homologous to human chromosome 1p, the most frequent deletion in human PCCs. ('deletions', 'Var', (37, 46)) ('PCC', 'Gene', '1421', (0, 3)) ('human', 'Species', '9606', (144, 149)) ('PCC', 'Gene', (150, 153)) ('Pten', 'Gene', (8, 12)) ('human', 'Species', '9606', (93, 98)) ('Pten', 'Gene', '19211', (8, 12)) ('PCCs', 'Phenotype', 'HP:0002666', (150, 154)) ('PCC', 'Gene', (0, 3)) ('PCCs', 'Phenotype', 'HP:0002666', (0, 4)) ('PCC', 'Gene', '1421', (150, 153)) ('mouse', 'Species', '10090', (50, 55)) ('mice', 'Species', '10090', (16, 20)) 21235 33252357 ErbB2 and B-Raf proto-oncogenes mutated mice are also able to develop PCCs, as well as those mutated in Rb, Trp53, VHL, and InK4a tumour suppressor genes. ('PCC', 'Gene', '1421', (70, 73)) ('ErbB2', 'Gene', '13866', (0, 5)) ('InK4a', 'Gene', '12578', (124, 129)) ('B-Raf', 'Gene', (10, 15)) ('tumour', 'Phenotype', 'HP:0002664', (130, 136)) ('tumour', 'Disease', 'MESH:D009369', (130, 136)) ('develop', 'PosReg', (62, 69)) ('mutated', 'Var', (93, 100)) ('tumour', 'Disease', (130, 136)) ('B-Raf', 'Gene', '109880', (10, 15)) ('Trp53', 'Gene', '22059', (108, 113)) ('VHL', 'Gene', (115, 118)) ('ErbB2', 'Gene', (0, 5)) ('Trp53', 'Gene', (108, 113)) ('mice', 'Species', '10090', (40, 44)) ('PCCs', 'Phenotype', 'HP:0002666', (70, 74)) ('Rb', 'Gene', '19645', (104, 106)) ('InK4a', 'Gene', (124, 129)) ('VHL', 'Gene', '22346', (115, 118)) ('mutated', 'Var', (32, 39)) ('PCC', 'Gene', (70, 73)) 21239 33252357 RS0 is, in fact, a new xenograft and cell line model of SDH-deficient PCC from rats with a heterozygous germline SDHB mutation. ('SDH-deficient PCC', 'Disease', (56, 73)) ('SDH-deficient PCC', 'Disease', 'OMIM:115700', (56, 73)) ('SDHB', 'Gene', (113, 117)) ('rats', 'Species', '10116', (79, 83)) ('mutation', 'Var', (118, 126)) 21250 33252357 In contrast, PC12 are noradrenergic and become excitable following NGF treatment. ('PC12', 'CellLine', 'CVCL:0481', (13, 17)) ('PC12', 'Var', (13, 17)) ('excitable', 'MPA', (47, 56)) 21256 33252357 On the contrary, the rat PC12 cell lines express both HIF1alpha and HIF2alpha. ('HIF1alpha', 'Var', (54, 63)) ('rat PC12', 'CellLine', 'CVCL:4695', (21, 29)) ('HIF2alpha', 'Var', (68, 77)) 21365 30366175 Most genetic studies on paraganglioma patients have highlighted the germline mutations in the RET, NFI and SDH mutations. ('RET', 'Gene', '5979', (94, 97)) ('SDH', 'Gene', '6390', (107, 110)) ('paraganglioma', 'Phenotype', 'HP:0002668', (24, 37)) ('NFI', 'Gene', '4782', (99, 102)) ('paraganglioma', 'Disease', (24, 37)) ('germline mutations', 'Var', (68, 86)) ('RET', 'Gene', (94, 97)) ('NFI', 'Gene', (99, 102)) ('patients', 'Species', '9606', (38, 46)) ('SDH', 'Gene', (107, 110)) ('paraganglioma', 'Disease', 'MESH:D010235', (24, 37)) 21366 30366175 According to Piccini et al., the gene mutations responsible for head and neck paraganglioma occurs mostly in genes encoding the subunits of succinate dehydrogenase or mitochondrial complex II which includes SDHD which located on 11q2 chromosome. ('SDHD', 'Gene', '6392', (207, 211)) ('SDHD', 'Gene', (207, 211)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (73, 91)) ('mutations', 'Var', (38, 47)) ('neck paraganglioma', 'Disease', (73, 91)) ('paraganglioma', 'Phenotype', 'HP:0002668', (78, 91)) 21368 30366175 The SDH mutations have been associated with clinical paraganglioma syndrome. ('SDH', 'Gene', '6390', (4, 7)) ('associated', 'Reg', (28, 38)) ('SDH', 'Gene', (4, 7)) ('paraganglioma syndrome', 'Disease', (53, 75)) ('mutations', 'Var', (8, 17)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (53, 75)) ('paraganglioma', 'Phenotype', 'HP:0002668', (53, 66)) 21369 30366175 documented that individual who is more likely to have SDH mutations are those who present with a family history of paragangliomas, a previous phaechromocytoma, multiple head and neck paragangliomas, age less than 40 years old and a male. ('mutations', 'Var', (58, 67)) ('paragangliomas', 'Disease', (115, 129)) ('paragangliomas', 'Disease', 'MESH:D010235', (115, 129)) ('neck paragangliomas', 'Disease', (178, 197)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (178, 197)) ('paraganglioma', 'Phenotype', 'HP:0002668', (115, 128)) ('paragangliomas', 'Disease', (183, 197)) ('SDH', 'Gene', '6390', (54, 57)) ('paragangliomas', 'Disease', 'MESH:D010235', (183, 197)) ('paragangliomas', 'Phenotype', 'HP:0002668', (115, 129)) ('paragangliomas', 'Phenotype', 'HP:0002668', (183, 197)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (178, 197)) ('paraganglioma', 'Phenotype', 'HP:0002668', (183, 196)) ('SDH', 'Gene', (54, 57)) 21375 30109021 Recent advances in the management of malignant pheochromocytoma and paraganglioma: focus on tyrosine kinase and hypoxia-inducible factor inhibitors Inactivating mutations of the succinate dehydrogenase subunit B ( SDHB) gene and the subsequent stabilization and activation of the hypoxia-inducible factor 2-alpha (HIF2alpha) unit are recognized hallmarks associated with the development of metastatic pheochromocytomas and paragangliomas (MPPG). ('Inactivating mutations', 'Var', (148, 170)) ('hypoxia', 'Disease', (280, 287)) ('hypoxia-inducible factor 2-alpha', 'Gene', '2034', (280, 312)) (' SDHB', 'Gene', (213, 218)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (47, 63)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (178, 211)) ('MPPG', 'Chemical', '-', (439, 443)) ('hypoxia', 'Disease', 'MESH:D000860', (280, 287)) ('hypoxia', 'Disease', (112, 119)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (401, 437)) ('activation', 'PosReg', (262, 272)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (401, 417)) ('succinate dehydrogenase subunit B', 'Gene', (178, 211)) ('hypoxia', 'Disease', 'MESH:D000860', (112, 119)) ('malignant pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (37, 81)) ('paraganglioma', 'Phenotype', 'HP:0002668', (68, 81)) ('hypoxia-inducible factor 2-alpha', 'Gene', (280, 312)) ('paragangliomas', 'Phenotype', 'HP:0002668', (423, 437)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (401, 418)) ('paraganglioma', 'Phenotype', 'HP:0002668', (423, 436)) 21390 30109021 Treatment options are limited to chemotherapy and low-specific activity 131meta-iodo-benzyl-guanidine (MIBG) and usually fail to produce a prolonged remission , . ('131meta-iodo-benzyl-guanidine', 'Var', (72, 101)) ('MIBG', 'Chemical', 'MESH:D019797', (103, 107)) ('low-specific', 'NegReg', (50, 62)) 21396 30109021 These mutations prevent the oxidative catabolism of succinate to fumarate and electron transportation through the internal mitochondrial membrane. ('oxidative catabolism of succinate to fumarate', 'MPA', (28, 73)) ('fumarate', 'Chemical', 'MESH:D005650', (65, 73)) ('prevent', 'NegReg', (16, 23)) ('mutations', 'Var', (6, 15)) ('succinate', 'Chemical', 'MESH:D019802', (52, 61)) 21401 30109021 Although the genetic causes of many MPPG (mainly SDHB mutations) and the molecular events leading to the metastatic transformation of chromaffin cells (stabilization and activation of HIF2alpha, DNA hypermethylation) were determined several years ago, the development of therapeutics against MPPG has been very slow for three main reasons: (a) difficulty of patient enrollment in large clinical trials, (b) lack of preclinical animal models, and (c) lack of efficient, targeted drugs. ('SDHB', 'Gene', (49, 53)) ('chromaffin', 'Chemical', '-', (134, 144)) ('MPPG', 'Chemical', '-', (293, 297)) ('mutations', 'Var', (54, 63)) ('MPPG', 'Chemical', '-', (36, 40)) ('MPPG', 'Disease', (36, 40)) ('patient', 'Species', '9606', (359, 366)) 21408 30109021 In addition, TKIs can inhibit other tyrosine kinase receptors that are universally involved in processes such as cancer cell growth, tumor spread, and development of resistance , ( Figure 1). ('cancer', 'Phenotype', 'HP:0002664', (113, 119)) ('tumor', 'Disease', 'MESH:D009369', (133, 138)) ('TKIs', 'Var', (13, 17)) ('inhibit', 'NegReg', (22, 29)) ('cancer', 'Disease', 'MESH:D009369', (113, 119)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('cancer', 'Disease', (113, 119)) ('tumor', 'Disease', (133, 138)) ('tyrosine kinase receptors', 'Enzyme', (36, 61)) 21422 30109021 Positive responses were noticed in carriers of SDHB mutations as well as patients with apparently sporadic tumors. ('mutations', 'Var', (52, 61)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumors', 'Disease', (107, 113)) ('tumors', 'Phenotype', 'HP:0002664', (107, 113)) ('SDHB', 'Gene', (47, 51)) ('tumors', 'Disease', 'MESH:D009369', (107, 113)) ('patients', 'Species', '9606', (73, 81)) 21443 30109021 In addition to inhibiting the VEGFRs, cabozantinib inhibits the c-met receptor pathways which are involved in tumor growth and spread and the development of resistance to anti-angiogenesis . ('cabozantinib', 'Var', (38, 50)) ('VEGFR', 'Gene', '3791', (30, 35)) ('c-met', 'Gene', '4233', (64, 69)) ('cabozantinib', 'Chemical', 'MESH:C558660', (38, 50)) ('inhibits', 'NegReg', (51, 59)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('tumor', 'Disease', (110, 115)) ('VEGFR', 'Gene', (30, 35)) ('inhibiting', 'NegReg', (15, 25)) ('c-met', 'Gene', (64, 69)) ('tumor', 'Disease', 'MESH:D009369', (110, 115)) 21475 30109021 It is also important to remember that patients with MPPG may have easier-to-control blood pressure after primary tumor resection (if possible) because of a decreased catecholamine surge . ('tumor', 'Disease', (113, 118)) ('MPPG', 'Chemical', '-', (52, 56)) ('catecholamine surge', 'Phenotype', 'HP:0003334', (166, 185)) ('easier-to-control', 'PosReg', (66, 83)) ('catecholamine surge', 'MPA', (166, 185)) ('decreased', 'NegReg', (156, 165)) ('catecholamine', 'Chemical', 'MESH:D002395', (166, 179)) ('MPPG', 'Var', (52, 56)) ('tumor', 'Disease', 'MESH:D009369', (113, 118)) ('patients', 'Species', '9606', (38, 46)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) 21477 30109021 Patients who receive TKIs frequently complain of constitutional symptoms, hand and foot syndrome, pain exacerbation, and gastrointestinal irritability among other symptoms. ('foot syndrome', 'Disease', (83, 96)) ('constitutional symptoms', 'Disease', (49, 72)) ('hand', 'Disease', (74, 78)) ('irritability', 'Phenotype', 'HP:0000737', (138, 150)) ('constitutional symptoms', 'Phenotype', 'HP:0025142', (49, 72)) ('TKIs', 'Var', (21, 25)) ('hand', 'Disease', 'MESH:D006230', (74, 78)) ('gastrointestinal irritability', 'Disease', (121, 150)) ('gastrointestinal irritability', 'Disease', 'MESH:D005767', (121, 150)) ('Patients', 'Species', '9606', (0, 8)) ('foot syndrome', 'Disease', 'MESH:D005534', (83, 96)) ('pain', 'Phenotype', 'HP:0012531', (98, 102)) ('pain', 'Disease', 'MESH:D010146', (98, 102)) ('pain', 'Disease', (98, 102)) ('complain', 'Reg', (37, 45)) 21487 30109021 In addition to SDHB mutations leading to HIF2alpha activation, mutations in the HIF2alpha-encoding gene ( EPAS1) have been identified and functionally characterized in PPGL . ('mutations', 'Var', (63, 72)) ('EPAS1', 'Gene', '2034', (106, 111)) ('EPAS1', 'Gene', (106, 111)) ('PPG', 'Chemical', '-', (168, 171)) ('SDHB', 'Gene', (15, 19)) ('activation', 'PosReg', (51, 61)) ('PPGL', 'Gene', (168, 172)) ('mutations', 'Var', (20, 29)) 21488 30109021 These validated findings, implicating the disruption of genes involved in the response to hypoxia, have spearheaded the initiation of therapeutic strategies to directly tackle HIF2alpha ( Figure 1). ('disruption', 'Var', (42, 52)) ('hypoxia', 'Disease', 'MESH:D000860', (90, 97)) ('hypoxia', 'Disease', (90, 97)) 21497 30109021 These therapies include radiopharmaceutical medications such as high-specific activity MIBG and peptide receptor radionuclide therapy (PRRT). ('MIBG', 'Gene', (87, 91)) ('high-specific', 'Var', (64, 77)) ('MIBG', 'Chemical', 'MESH:D019797', (87, 91)) 21532 29644041 Immunohistochemistry revealed positivity for chromogranin and synaptofisin, compatible with paraganglioma (Figs 4-6). ('positivity', 'Var', (30, 40)) ('paraganglioma', 'Disease', (92, 105)) ('synaptofisin', 'Protein', (62, 74)) ('paraganglioma', 'Disease', 'MESH:D010235', (92, 105)) ('chromogranin', 'Protein', (45, 57)) ('paraganglioma', 'Phenotype', 'HP:0002668', (92, 105)) 21542 29644041 While PGGL secret almost exclusively noradrenaline (except PGGL of organ of Zuckerkandl), Pheos may secrete adrenaline, noradrenaline and dopamine due to the expression of phenyletanolamine-N-metyltransferase. ('adrenaline', 'Chemical', 'MESH:D004837', (123, 133)) ('dopamine', 'Chemical', 'MESH:D004298', (138, 146)) ('phenyletanolamine-N-metyltransferase', 'Var', (172, 208)) ('secrete adrenaline', 'MPA', (100, 118)) ('noradrenaline', 'Chemical', 'MESH:D009638', (37, 50)) ('Pheos', 'Phenotype', 'HP:0002666', (90, 95)) ('adrenaline', 'Chemical', 'MESH:D004837', (108, 118)) ('PGGL', 'Phenotype', 'HP:0002668', (6, 10)) ('PGGL', 'Phenotype', 'HP:0002668', (59, 63)) ('noradrenaline', 'MPA', (37, 50)) ('noradrenaline', 'Chemical', 'MESH:D009638', (120, 133)) ('adrenaline', 'Chemical', 'MESH:D004837', (40, 50)) 21548 29644041 Functional imaging with 123I-MIBG or 18F-FDG PET/CT are also acceptable if no lesion can be identified by morphological cross sectional imaging, if metastatic disease is suspected or if a paraganglioma is discovered. ('paraganglioma', 'Phenotype', 'HP:0002668', (188, 201)) ('123I-MIBG', 'Var', (24, 33)) ('paraganglioma', 'Disease', (188, 201)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (24, 33)) ('paraganglioma', 'Disease', 'MESH:D010235', (188, 201)) ('18F-FDG', 'Var', (37, 44)) 21550 29644041 18F-FDG-PET, 18F-DOPA and Octreoscan are superior to MIBG in the investigation of PGGL, especially if malignant and harboring a SDHB mutation. ('mutation', 'Var', (133, 141)) ('SDHB', 'Gene', (128, 132)) ('PGGL', 'Phenotype', 'HP:0002668', (82, 86)) ('18F-DOPA', 'Chemical', 'MESH:C043437', (13, 21)) ('MIBG', 'Chemical', 'MESH:D019797', (53, 57)) ('SDHB', 'Gene', '6390', (128, 132)) 21712 26624503 Those with non-functioning retroperitoneal paragangliomas may be diagnosed incidentally or present with compressive symptoms such as abdominal pain that may be associated with nausea, vomiting, abdominal distension and weight loss. ('vomiting', 'Disease', (184, 192)) ('retroperitoneal paragangliomas', 'Phenotype', 'HP:0006729', (27, 57)) ('weight loss', 'Disease', (219, 230)) ('nausea', 'Disease', (176, 182)) ('retroperitoneal paragangliomas', 'Disease', (27, 57)) ('associated', 'Reg', (160, 170)) ('abdominal pain', 'Disease', (133, 147)) ('abdominal pain', 'Disease', 'MESH:D015746', (133, 147)) ('pain', 'Phenotype', 'HP:0012531', (143, 147)) ('nausea', 'Disease', 'MESH:D009325', (176, 182)) ('retroperitoneal paraganglioma', 'Phenotype', 'HP:0006729', (27, 56)) ('retroperitoneal paragangliomas', 'Disease', 'MESH:D012186', (27, 57)) ('abdominal distension', 'Disease', (194, 214)) ('abdominal distension', 'Phenotype', 'HP:0003270', (194, 214)) ('compressive symptoms', 'Phenotype', 'HP:0000716', (104, 124)) ('paraganglioma', 'Phenotype', 'HP:0002668', (43, 56)) ('paragangliomas', 'Phenotype', 'HP:0002668', (43, 57)) ('weight loss', 'Disease', 'MESH:D015431', (219, 230)) ('vomiting', 'Disease', 'MESH:D014839', (184, 192)) ('non-functioning', 'Var', (11, 26)) ('nausea', 'Phenotype', 'HP:0002018', (176, 182)) ('weight loss', 'Phenotype', 'HP:0001824', (219, 230)) ('vomiting', 'Phenotype', 'HP:0002013', (184, 192)) ('abdominal pain', 'Phenotype', 'HP:0002027', (133, 147)) 21744 23891076 Factors not associated with biochemical response to surgery include gender, family history, SDHB mutation status, systemic therapy, and preoperative biochemical profile. ('SDHB', 'Gene', (92, 96)) ('SDHB', 'Gene', '6390', (92, 96)) ('mutation', 'Var', (97, 105)) 21752 23891076 The most well defined genetic risk factor for malignant disease is a mutation in the SDHB gene, which is clinically associated with an earlier onset of disease and more aggressive malignancy. ('mutation', 'Var', (69, 77)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('malignant disease', 'Disease', 'MESH:D009369', (46, 63)) ('aggressive malignancy', 'Disease', 'MESH:D009369', (169, 190)) ('aggressive malignancy', 'Disease', (169, 190)) ('malignant disease', 'Disease', (46, 63)) ('associated', 'Reg', (116, 126)) 21757 23891076 All patients underwent genetic testing for mutations and deletions in SDHA, SDHB, SDHC, SDHD, SDHAF2, RET, VHL, and TMEM127. ('SDHC', 'Gene', '6391', (82, 86)) ('SDHD', 'Gene', '6392', (88, 92)) ('SDHD', 'Gene', (88, 92)) ('patients', 'Species', '9606', (4, 12)) ('RET', 'Gene', '5979', (102, 105)) ('VHL', 'Gene', (107, 110)) ('SDHC', 'Gene', (82, 86)) ('deletions', 'Var', (57, 66)) ('SDHB', 'Gene', '6390', (76, 80)) ('SDHAF2', 'Gene', (94, 100)) ('SDHA', 'Gene', (70, 74)) ('SDHAF2', 'Gene', '54949', (94, 100)) ('SDHA', 'Gene', (94, 98)) ('TMEM127', 'Gene', (116, 123)) ('VHL', 'Gene', '7428', (107, 110)) ('SDHA', 'Gene', '6389', (70, 74)) ('SDHB', 'Gene', (76, 80)) ('RET', 'Gene', (102, 105)) ('SDHA', 'Gene', '6389', (94, 98)) ('mutations', 'Var', (43, 52)) ('TMEM127', 'Gene', '55654', (116, 123)) 21774 23891076 Twelve (40%) patients had a germline mutation in the SDHB gene, with one patient positive for SDHD. ('SDHD', 'Gene', (94, 98)) ('SDHB', 'Gene', '6390', (53, 57)) ('patient', 'Species', '9606', (13, 20)) ('patients', 'Species', '9606', (13, 21)) ('SDHB', 'Gene', (53, 57)) ('patient', 'Species', '9606', (73, 80)) ('germline mutation', 'Var', (28, 45)) ('SDHD', 'Gene', '6392', (94, 98)) 21788 23891076 Patients with SDHB mutations appeared to demonstrate a less durable biochemical response, but this result did not achieve statistical significance (P = 0.021, Figure 2). ('mutations', 'Var', (19, 28)) ('biochemical response', 'MPA', (68, 88)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', '6390', (14, 18)) ('SDHB', 'Gene', (14, 18)) 21799 23891076 The analysis also showed a statistical trends towards worse operative outcomes in patients with SDHB mutations (Figure 2) and in patients whose initial presentation involved the classic symptom triad of headache, palpitations, and diaphoresis. ('mutations', 'Var', (101, 110)) ('patients', 'Species', '9606', (129, 137)) ('patients', 'Species', '9606', (82, 90)) ('headache', 'Disease', (203, 211)) ('palpitations', 'Disease', (213, 225)) ('headache', 'Phenotype', 'HP:0002315', (203, 211)) ('palpitations', 'Phenotype', 'HP:0001962', (213, 225)) ('diaphoresis', 'Phenotype', 'HP:0000975', (231, 242)) ('diaphoresis', 'Disease', (231, 242)) ('SDHB', 'Gene', '6390', (96, 100)) ('SDHB', 'Gene', (96, 100)) ('headache', 'Disease', 'MESH:D006261', (203, 211)) ('worse', 'NegReg', (54, 59)) 21987 22983831 Mutations in succinate dehydrogenase (SDH) gene or mitochondrial complex 2 gene are responsible for most cases of hereditary paragangliomas. ('succinate dehydrogenase', 'Gene', '6390', (13, 36)) ('SDH', 'Gene', '6390', (38, 41)) ('succinate dehydrogenase', 'Gene', (13, 36)) ('responsible', 'Reg', (84, 95)) ('paragangliomas', 'Phenotype', 'HP:0002668', (125, 139)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', (38, 41)) ('hereditary paragangliomas', 'Disease', 'MESH:D010235', (114, 139)) ('paraganglioma', 'Phenotype', 'HP:0002668', (125, 138)) ('hereditary paragangliomas', 'Disease', (114, 139)) 22106 22222147 For surgery of primary pheochromocytoma, it has been shown that catecholamine release can be triggered by direct manipulation during dissection/extirpation of the tumor and by increase of pressure of the abdominal cavity, as it can occur by induction of a pneumoperitoneum for laparoscopy or palpation of the abdomen. ('increase', 'PosReg', (176, 184)) ('tumor', 'Disease', 'MESH:D009369', (163, 168)) ('catecholamine release', 'MPA', (64, 85)) ('manipulation', 'Var', (113, 125)) ('pheochromocytoma', 'Disease', (23, 39)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (23, 39)) ('tumor', 'Disease', (163, 168)) ('catecholamine', 'Chemical', 'MESH:D002395', (64, 77)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (23, 39)) 22112 22222147 In particular, tumors predominantly containing norepinephrine are characterized by poorly differentiated secretory pathways resulting in unregulated catecholamine release, in contrast to tumors that predominantly produce epinephrine or metanephrine. ('unregulated catecholamine release', 'MPA', (137, 170)) ('tumors', 'Phenotype', 'HP:0002664', (15, 21)) ('norepinephrine', 'Chemical', 'MESH:D009638', (47, 61)) ('norepinephrine', 'Var', (47, 61)) ('tumor', 'Phenotype', 'HP:0002664', (187, 192)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('tumors', 'Disease', 'MESH:D009369', (15, 21)) ('catecholamine', 'Chemical', 'MESH:D002395', (149, 162)) ('tumors', 'Disease', (187, 193)) ('tumors', 'Disease', 'MESH:D009369', (187, 193)) ('tumors', 'Phenotype', 'HP:0002664', (187, 193)) ('epinephrine', 'Chemical', 'MESH:D004837', (221, 232)) ('epinephrine', 'Chemical', 'MESH:D004837', (50, 61)) ('tumors', 'Disease', (15, 21)) ('metanephrine', 'Chemical', 'MESH:D008676', (236, 248)) 22155 18707631 Familial syndromes with pheochromocytomas/paragangliomas include multiple endocrine neoplasia type 2 (MEN 2), von Hippel-Lindau (VHL) syndrome, neuroectodermal dysplasias (neurofibromatosis type 1 [NF-1], tuberous sclerosis and Sturge-Weber syndrome) and other familial paragangliomas (especially those related to succinate dehydrogenase (SDH) gene mutations; see below). ('pheochromocytoma', 'Phenotype', 'HP:0002666', (24, 40)) ('endocrine neoplasia type 2', 'Disease', (74, 100)) ('tuberous sclerosis', 'Disease', (205, 223)) ('pheochromocytomas/paragangliomas', 'Disease', (24, 56)) ('NF-1', 'Gene', '4763', (198, 202)) ('NF-1', 'Gene', (198, 202)) ('familial paragangliomas', 'Disease', (261, 284)) ('paragangliomas', 'Phenotype', 'HP:0002668', (270, 284)) ('paraganglioma', 'Phenotype', 'HP:0002668', (270, 283)) ('neuroectodermal dysplasias', 'Disease', (144, 170)) ('neurofibromatosis type 1', 'Gene', (172, 196)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (74, 93)) ('succinate dehydrogenase', 'Gene', '6390', (314, 337)) ('SDH', 'Gene', '6390', (339, 342)) ('mutations', 'Var', (349, 358)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (24, 56)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (24, 41)) ('Sturge-Weber syndrome', 'Disease', 'MESH:D013341', (228, 249)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (172, 189)) ('MEN', 'Species', '9606', (102, 105)) ('familial paragangliomas', 'Disease', 'MESH:D010235', (261, 284)) ('neuroectodermal dysplasias', 'Disease', 'MESH:D020752', (144, 170)) ('Sturge-Weber syndrome', 'Disease', (228, 249)) ('von Hippel-Lindau (VHL) syndrome', 'Disease', 'MESH:D006623', (110, 142)) ('neuroectodermal dysplasias', 'Phenotype', 'HP:0030061', (144, 170)) ('paragangliomas', 'Phenotype', 'HP:0002668', (42, 56)) ('SDH', 'Gene', (339, 342)) ('paraganglioma', 'Phenotype', 'HP:0002668', (42, 55)) ('Weber syndrome', 'Phenotype', 'HP:0002277', (235, 249)) ('neurofibromatosis type 1', 'Gene', '4763', (172, 196)) ('neoplasia', 'Phenotype', 'HP:0002664', (84, 93)) ('endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (74, 100)) ('succinate dehydrogenase', 'Gene', (314, 337)) ('tuberous sclerosis', 'Disease', 'MESH:D014402', (205, 223)) 22156 18707631 Activating germline mutations in the RET (REarranged during Transfection) protooncogene (usually in codons 634 or 918; 10q11.2) are implicated in the abnormal cellular proliferation of the MEN 2 syndrome. ('Activating', 'PosReg', (0, 10)) ('RET', 'Gene', (37, 40)) ('REarranged during Transfection', 'Gene', (42, 72)) ('MEN 2 syndrome', 'Disease', (189, 203)) ('MEN', 'Species', '9606', (189, 192)) ('germline mutations', 'Var', (11, 29)) ('RET', 'Gene', '5979', (37, 40)) ('REarranged during Transfection', 'Gene', '5979', (42, 72)) ('abnormal cellular proliferation', 'Phenotype', 'HP:0031377', (150, 181)) 22158 18707631 Commonly missense mutations in the VHL tumor suppressor gene (usually in codon 167; 3p25-26) are implicated in the pathogenesis of VHL syndrome, with 25%-50% of subjects having mostly benign pheochromocytomas (and slightly less than 50% with bilateral disease). ('VHL syndrome', 'Disease', (131, 143)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (191, 207)) ('implicated', 'Reg', (97, 107)) ('VHL tumor', 'Disease', 'MESH:D006623', (35, 44)) ('benign pheochromocytomas', 'Disease', (184, 208)) ('benign pheochromocytomas', 'Disease', 'MESH:D010673', (184, 208)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (191, 208)) ('VHL tumor', 'Disease', (35, 44)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('VHL syndrome', 'Disease', 'MESH:D006623', (131, 143)) ('missense mutations', 'Var', (9, 27)) 22159 18707631 The genetic background of pheochromocytomas observed in subjects with neuroectodermal dysplasias is yet to be elucidated, although mutations in the NF-1 tumor suppressor gene - associated with von Recklinghausen's disease - have been observed (17q11.2; in 90% of cases). ("von Recklinghausen's disease", 'Disease', (193, 221)) ('mutations', 'Var', (131, 140)) ('pheochromocytomas', 'Disease', (26, 43)) ('tumor', 'Disease', 'MESH:D009369', (153, 158)) ('NF-1', 'Gene', '4763', (148, 152)) ("von Recklinghausen's disease", 'Disease', 'MESH:C537392', (193, 221)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (26, 42)) ('neuroectodermal dysplasias', 'Phenotype', 'HP:0030061', (70, 96)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('tumor', 'Disease', (153, 158)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (26, 43)) ('neuroectodermal dysplasias', 'Disease', (70, 96)) ('NF-1', 'Gene', (148, 152)) ('neuroectodermal dysplasias', 'Disease', 'MESH:D020752', (70, 96)) ('associated', 'Reg', (177, 187)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (26, 43)) 22161 18707631 Familial pheochromocytomas or head/neck paragangliomas are seen in subjects with germline mutations in subunits B, C and D of the SDH gene; the risk of extraadrenal and/or malignant disease is high for SDHB mutation carriers. ('mutations', 'Var', (90, 99)) ('extraadrenal', 'Disease', (152, 164)) ('SDH', 'Gene', (202, 205)) ('malignant disease', 'Disease', 'MESH:D009369', (172, 189)) ('neck paragangliomas', 'Disease', (35, 54)) ('malignant disease', 'Disease', (172, 189)) ('paraganglioma', 'Phenotype', 'HP:0002668', (40, 53)) ('paragangliomas', 'Phenotype', 'HP:0002668', (40, 54)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (9, 26)) ('SDH', 'Gene', (130, 133)) ('SDHB', 'Gene', '6390', (202, 206)) ('mutation', 'Var', (207, 215)) ('Familial pheochromocytomas', 'Disease', (0, 26)) ('head/neck paragangliomas', 'Phenotype', 'HP:0002864', (30, 54)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (35, 54)) ('SDHB', 'Gene', (202, 206)) ('SDH', 'Gene', '6390', (202, 205)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (9, 25)) ('Familial pheochromocytomas', 'Disease', 'MESH:C531777', (0, 26)) ('SDH', 'Gene', '6390', (130, 133)) 22163 18707631 10% extraadrenal, 10% malignant or 10% hereditary is in flux, since mutations in the SDHB, SDHD, VHL or RET genes have been identified in 12%-25% of patients with apparently sporadic pheochromocytomas. ('RET', 'Gene', '5979', (104, 107)) ('VHL', 'Gene', '7428', (97, 100)) ('patients', 'Species', '9606', (149, 157)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (183, 199)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (183, 200)) ('identified', 'Reg', (124, 134)) ('mutations', 'Var', (68, 77)) ('SDHD', 'Gene', (91, 95)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHD', 'Gene', '6392', (91, 95)) ('SDHB', 'Gene', (85, 89)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (183, 200)) ('VHL', 'Gene', (97, 100)) ('pheochromocytomas', 'Disease', (183, 200)) ('RET', 'Gene', (104, 107)) 22187 18707631 The sensitivity of [123I]MIBG is 83%-100% versus 77%-90% of [131I]MIBG (sensitivity is lower for extra-adrenal and/or metastatic disease); their specificity is 95%-100%. ('[123I]MIBG', 'Chemical', 'MESH:D019797', (19, 29)) ('lower', 'NegReg', (87, 92)) ('metastatic', 'CPA', (118, 128)) ('[131I]MIBG', 'Chemical', '-', (60, 70)) ('extra-adrenal', 'Disease', (97, 110)) ('[123I]MIBG', 'Var', (19, 29)) 22231 18707631 Mainly gastric carcinoids are found in 10% of individuals with Multiple Endocrine Neoplasia (MEN) type 1, which is an autosomal dominant disorder caused by deletion of the MEN1 suppressor gene on chromosome 11q13. ('caused by', 'Reg', (146, 155)) ('autosomal dominant disorder', 'Disease', 'MESH:D030342', (118, 145)) ('MEN1', 'Gene', (172, 176)) ('MEN1', 'Gene', '4221', (172, 176)) ('Neoplasia', 'Phenotype', 'HP:0002664', (82, 91)) ('MEN', 'Species', '9606', (172, 175)) ('gastric carcinoids', 'Disease', (7, 25)) ('autosomal dominant disorder', 'Disease', (118, 145)) ('MEN', 'Species', '9606', (93, 96)) ('Multiple Endocrine Neoplasia', 'Disease', (63, 91)) ('carcinoid', 'Phenotype', 'HP:0100570', (15, 24)) ('gastric carcinoids', 'Disease', 'MESH:D002276', (7, 25)) ('Multiple Endocrine Neoplasia', 'Disease', 'MESH:D009377', (63, 91)) ('carcinoids', 'Phenotype', 'HP:0100570', (15, 25)) ('Endocrine Neoplasia', 'Phenotype', 'HP:0100568', (72, 91)) ('deletion', 'Var', (156, 164)) 22232 18707631 Forty to eighty percent of patients with sporadic carcinoids also harbor loss of heterozygozity in chromosome 11 or deletion of the MEN1 gene. ('loss', 'NegReg', (73, 77)) ('carcinoids', 'Phenotype', 'HP:0100570', (50, 60)) ('MEN1', 'Gene', (132, 136)) ('MEN1', 'Gene', '4221', (132, 136)) ('deletion', 'Var', (116, 124)) ('patients', 'Species', '9606', (27, 35)) ('carcinoid', 'Phenotype', 'HP:0100570', (50, 59)) 22233 18707631 Pulmonary carcinoids are associated with mutations in the p53 suppressor gene and variability in bcl-2 expression. ('mutations', 'Var', (41, 50)) ('carcinoid', 'Phenotype', 'HP:0100570', (10, 19)) ('associated', 'Reg', (25, 35)) ('expression', 'MPA', (103, 113)) ('Pulmonary carcinoids', 'Disease', (0, 20)) ('carcinoids', 'Phenotype', 'HP:0100570', (10, 20)) ('bcl-2', 'Gene', (97, 102)) ('p53', 'Gene', (58, 61)) ('Pulmonary carcinoids', 'Phenotype', 'HP:0030445', (0, 20)) ('bcl-2', 'Gene', '596', (97, 102)) ('p53', 'Gene', '7157', (58, 61)) 22247 18707631 Scintigraphy with [131I]MIBG has 55%-85% sensitivity and 95% specificity in localizing carcinoids and the combination of SRS and MIBG scintigraphy results may provide even better localizing sensitivity. ('MIBG', 'Chemical', 'MESH:D019797', (24, 28)) ('[131I]MIBG', 'Chemical', '-', (18, 28)) ('carcinoid', 'Phenotype', 'HP:0100570', (87, 96)) ('carcinoids', 'Disease', (87, 97)) ('MIBG', 'Chemical', 'MESH:D019797', (129, 133)) ('carcinoids', 'Phenotype', 'HP:0100570', (87, 97)) ('[131I]', 'Var', (18, 24)) 22258 18707631 Other PET ligands, such as [68Ga]DOTANOC (with affinity for ST-R-2 and -5) are being evaluated for neuroendocrine tumors, including carcinoids. ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (99, 120)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (99, 120)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('neuroendocrine tumors', 'Disease', (99, 120)) ('[68Ga]DOTANOC', 'Var', (27, 40)) ('carcinoids', 'Disease', (132, 142)) ('tumors', 'Phenotype', 'HP:0002664', (114, 120)) ('carcinoids', 'Phenotype', 'HP:0100570', (132, 142)) ('carcinoid', 'Phenotype', 'HP:0100570', (132, 141)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (99, 119)) 22336 31292390 On admission, her consciousness level was at Glasgow Coma Scale (GCS) E3V5M6, temperature was 36.1oC, blood pressure was 167/117 mmHg, heart rate was 118 bpm, respiratory rate was 22 breaths/min, and peripheral capillary oxygen saturation (SpO2) was 97% (room air). ('heart', 'MPA', (135, 140)) ('Coma', 'Phenotype', 'HP:0001259', (53, 57)) ('SpO2', 'Chemical', 'MESH:C064029', (240, 244)) ('oxygen', 'Chemical', 'MESH:D010100', (221, 227)) ('E3V5M6', 'Var', (70, 76)) 22422 29680948 germline BAP1 mutations), there is limited information regarding the lifetime RCC risks and the most appropriate screening modalities. ('BAP1', 'Gene', '8314', (9, 13)) ('RCC', 'Disease', (78, 81)) ('RCC', 'Disease', 'MESH:C538614', (78, 81)) ('BAP1', 'Gene', (9, 13)) ('mutations', 'Var', (14, 23)) 22424 29680948 International data sharing of inherited RCC gene variant information may enable evidence-based improvements in the diagnosis, surveillance protocols and management of these rare conditions. ('variant', 'Var', (49, 56)) ('inherited RCC', 'Disease', 'MESH:C538614', (30, 43)) ('inherited RCC', 'Disease', (30, 43)) 22427 29680948 However, patients harbouring a mutation in a gene predisposing to RCC do not necessarily have a family history of RCC (the mutation may have arisen de novo in the proband or the mutation may be non-penetrant in a carrier parent. ('RCC', 'Disease', 'MESH:C538614', (66, 69)) ('RCC', 'Disease', 'MESH:C538614', (114, 117)) ('patients', 'Species', '9606', (9, 17)) ('RCC', 'Disease', (114, 117)) ('mutation', 'Var', (31, 39)) ('RCC', 'Disease', (66, 69)) 22433 29680948 This rare autosomal dominantly inherited disorder has an incidence of approximately 1 in 30,000 and is caused by constitutional mutations in the VHL tumour suppressor gene (TSG). ('autosomal dominantly inherited disorder', 'Disease', 'MESH:D030342', (10, 49)) ('TSG', 'Gene', (173, 176)) ('mutations', 'Var', (128, 137)) ('VHL tumour', 'Disease', (145, 155)) ('VHL tumour', 'Disease', 'MESH:D006623', (145, 155)) ('tumour', 'Phenotype', 'HP:0002664', (149, 155)) ('TSG', 'Gene', '57045', (173, 176)) ('caused by', 'Reg', (103, 112)) ('autosomal dominantly inherited disorder', 'Disease', (10, 49)) 22437 29680948 More than 95% of patients with VHL disease will have a detectable VHL gene mutation and well-defined genotype-phenotype mean that the nature of the mutation may predict likely tumour risks (e.g. ('VHL', 'Gene', '7428', (31, 34)) ('predict', 'Reg', (161, 168)) ('tumour', 'Disease', 'MESH:D009369', (176, 182)) ('VHL disease', 'Disease', (31, 42)) ('mutation', 'Var', (75, 83)) ('tumour', 'Phenotype', 'HP:0002664', (176, 182)) ('VHL disease', 'Disease', 'MESH:D006623', (31, 42)) ('patients', 'Species', '9606', (17, 25)) ('VHL', 'Gene', (66, 69)) ('VHL', 'Gene', (31, 34)) ('tumour', 'Disease', (176, 182)) ('VHL', 'Gene', '7428', (66, 69)) 22438 29680948 risk of phaeochromocytoma is small with truncating mutations and exonic deletions). ('truncating mutations', 'Var', (40, 60)) ('phaeochromocytoma', 'Disease', (8, 25)) ('exonic deletions', 'Var', (65, 81)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (8, 25)) 22440 29680948 sunitinib/sorafenib) in sporadic RCC, as most clear cell RCC have somatic mutations in the VHL TSG. ('sorafenib', 'Chemical', 'MESH:D000077157', (10, 19)) ('VHL', 'Gene', (91, 94)) ('TSG', 'Gene', (95, 98)) ('mutations', 'Var', (74, 83)) ('RCC', 'Disease', 'MESH:C538614', (33, 36)) ('RCC', 'Disease', (33, 36)) ('VHL', 'Gene', '7428', (91, 94)) ('RCC', 'Disease', 'MESH:C538614', (57, 60)) ('RCC', 'Disease', (57, 60)) ('TSG', 'Gene', '57045', (95, 98)) ('sunitinib', 'Chemical', 'MESH:D000077210', (0, 9)) 22445 29680948 Germline inactivating mutations in the FLCN TSG can cause both BHD syndrome and non-syndromic familial pneumothorax. ('non-syndromic familial pneumothorax', 'Disease', (80, 115)) ('BHD syndrome', 'Disease', 'MESH:D058249', (63, 75)) ('pneumothorax', 'Phenotype', 'HP:0002107', (103, 115)) ('FLCN', 'Gene', '201163', (39, 43)) ('familial pneumothorax', 'Phenotype', 'HP:0004876', (94, 115)) ('non-syndromic familial pneumothorax', 'Disease', 'MESH:D011030', (80, 115)) ('Germline inactivating mutations', 'Var', (0, 31)) ('TSG', 'Gene', (44, 47)) ('cause', 'Reg', (52, 57)) ('BHD syndrome', 'Disease', (63, 75)) ('FLCN', 'Gene', (39, 43)) ('TSG', 'Gene', '57045', (44, 47)) 22446 29680948 The function of the FLCN gene product has not been fully elucidated; however, inactivation leads to activation of the mTOR pathway. ('inactivation', 'Var', (78, 90)) ('FLCN', 'Gene', (20, 24)) ('FLCN', 'Gene', '201163', (20, 24)) ('mTOR', 'Gene', (118, 122)) ('mTOR', 'Gene', '2475', (118, 122)) ('activation', 'PosReg', (100, 110)) 22448 29680948 This very rare disorder (incidence approximately 1 in 200,000) is caused by inactivating mutations in the FH gene which encodes fumarate hydratase, a key component of the tricarboxylic acid (Krebs) cycle. ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (171, 189)) ('inactivating mutations', 'Var', (76, 98)) ('rare disorder', 'Disease', (10, 23)) ('rare disorder', 'Disease', 'MESH:D035583', (10, 23)) ('fumarate hydratase', 'Gene', '2271', (128, 146)) ('caused by', 'Reg', (66, 75)) ('Krebs', 'Chemical', '-', (191, 196)) ('fumarate hydratase', 'Gene', (128, 146)) 22449 29680948 Affected females may present with early-onset multiple uterine leiomyomas (fibroids) and FH mutations are a rare cause of inherited phaeochromocytoma/paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (150, 163)) ('uterine leiomyomas', 'Phenotype', 'HP:0000131', (55, 73)) ('inherited phaeochromocytoma/paraganglioma', 'Disease', 'MESH:D010235', (122, 163)) ('leiomyomas', 'Disease', (63, 73)) ('mutations', 'Var', (92, 101)) ('inherited phaeochromocytoma/paraganglioma', 'Disease', (122, 163)) ('leiomyomas', 'Disease', 'MESH:D007889', (63, 73)) 22453 29680948 Germline mutations in these SDHx were initially described in association with phaeochromocytoma/paraganglioma and head and neck paraganglioma (HNPGL), but the tumour spectrum has since expanded to include gastrointestinal stromal tumours, pituitary tumours and RCC. ('Germline mutations', 'Var', (0, 18)) ('RCC', 'Disease', 'MESH:C538614', (261, 264)) ('gastrointestinal stromal tumours', 'Disease', 'MESH:D046152', (205, 237)) ('pituitary tumours', 'Disease', (239, 256)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('SDHx', 'Gene', (28, 32)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (123, 141)) ('paraganglioma', 'Phenotype', 'HP:0002668', (128, 141)) ('tumours', 'Phenotype', 'HP:0002664', (249, 256)) ('association', 'Reg', (61, 72)) ('SDHx', 'Chemical', '-', (28, 32)) ('tumour', 'Phenotype', 'HP:0002664', (249, 255)) ('gastrointestinal stromal tumours', 'Disease', (205, 237)) ('tumour', 'Disease', 'MESH:D009369', (249, 255)) ('tumours', 'Phenotype', 'HP:0002664', (230, 237)) ('tumour', 'Disease', (249, 255)) ('tumour', 'Phenotype', 'HP:0002664', (159, 165)) ('tumour', 'Disease', 'MESH:D009369', (159, 165)) ('RCC', 'Disease', (261, 264)) ('phaeochromocytoma/paraganglioma', 'Disease', (78, 109)) ('phaeochromocytoma/paraganglioma', 'Disease', 'MESH:D010235', (78, 109)) ('tumour', 'Disease', (159, 165)) ('pituitary tumours', 'Disease', 'MESH:D010911', (239, 256)) ('tumour', 'Phenotype', 'HP:0002664', (230, 236)) ('neck paraganglioma', 'Disease', (123, 141)) ('tumour', 'Disease', 'MESH:D009369', (230, 236)) ('tumour', 'Disease', (230, 236)) 22455 29680948 Though RCC has been associated with mutations in each of the subunits, the most commonly associated gene is SDHB. ('associated', 'Reg', (89, 99)) ('SDHB', 'Gene', (108, 112)) ('associated', 'Reg', (20, 30)) ('RCC', 'Disease', 'MESH:C538614', (7, 10)) ('mutations', 'Var', (36, 45)) ('SDHB', 'Gene', '6390', (108, 112)) ('RCC', 'Disease', (7, 10)) 22456 29680948 Germline mutations in SDHB may present with a familial RCC-only phenotype. ('Germline mutations', 'Var', (0, 18)) ('present', 'Reg', (31, 38)) ('SDHB', 'Gene', '6390', (22, 26)) ('familial RCC-only', 'Disease', (46, 63)) ('SDHB', 'Gene', (22, 26)) ('familial RCC-only', 'Disease', 'MESH:C538614', (46, 63)) 22457 29680948 The lifetime risk of RCC in SDHB mutation carriers is not well defined, but likely less than 10-15%; however, annual or biannual renal surveillance by MRI can be combined with screening for phaeochromocytoma/paraganglioma (which commences in older children). ('children', 'Species', '9606', (248, 256)) ('mutation', 'Var', (33, 41)) ('RCC', 'Disease', (21, 24)) ('phaeochromocytoma/paraganglioma', 'Disease', (190, 221)) ('phaeochromocytoma/paraganglioma', 'Disease', 'MESH:D010235', (190, 221)) ('RCC', 'Disease', 'MESH:C538614', (21, 24)) ('SDHB', 'Gene', '6390', (28, 32)) ('paraganglioma', 'Phenotype', 'HP:0002668', (208, 221)) ('SDHB', 'Gene', (28, 32)) 22458 29680948 Activating mutations in the MET proto-oncogene predispose to Type 1 hereditary papillary RCC (HPRC). ('MET proto-oncogene', 'Gene', (28, 46)) ('Type 1 hereditary papillary RCC', 'Disease', (61, 92)) ('Activating mutations', 'Var', (0, 20)) ('predispose', 'Reg', (47, 57)) ('Type 1 hereditary papillary RCC', 'Disease', 'MESH:C538614', (61, 92)) 22461 29680948 Following reports of germline BAP1 mutations in familial uveal melanoma, cutaneous melanoma and mesothelioma, it was recognised that RCCs are also part of the BAP1 tumour syndrome spectrum. ('tumour', 'Phenotype', 'HP:0002664', (164, 170)) ('cutaneous melanoma', 'Disease', (73, 91)) ('BAP1', 'Gene', '8314', (159, 163)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (73, 91)) ('cutaneous melanoma', 'Disease', 'MESH:C562393', (73, 91)) ('RCC', 'Disease', 'MESH:C538614', (133, 136)) ('melanoma', 'Phenotype', 'HP:0002861', (63, 71)) ('tumour syndrome', 'Disease', (164, 179)) ('mesothelioma', 'Disease', (96, 108)) ('tumour syndrome', 'Disease', 'MESH:D009369', (164, 179)) ('mesothelioma', 'Disease', 'MESH:D008654', (96, 108)) ('BAP1', 'Gene', '8314', (30, 34)) ('BAP1', 'Gene', (159, 163)) ('uveal melanoma', 'Phenotype', 'HP:0007716', (57, 71)) ('melanoma', 'Phenotype', 'HP:0002861', (83, 91)) ('familial uveal melanoma', 'Disease', 'MESH:C536494', (48, 71)) ('familial uveal melanoma', 'Disease', (48, 71)) ('BAP1', 'Gene', (30, 34)) ('RCC', 'Disease', (133, 136)) ('mutations', 'Var', (35, 44)) 22462 29680948 Though germline BAP1 mutations have been described in patients with familial RCC and no other BAP1-related tumours, such cases are rare and BAP1 mutation analysis is not yet performed in all cases of inherited RCC. ('familial RCC', 'Disease', 'MESH:C538614', (68, 80)) ('tumours', 'Disease', 'MESH:D009369', (107, 114)) ('tumours', 'Disease', (107, 114)) ('BAP1', 'Gene', '8314', (94, 98)) ('BAP1', 'Gene', (140, 144)) ('inherited RCC', 'Disease', (200, 213)) ('familial RCC', 'Disease', (68, 80)) ('patients', 'Species', '9606', (54, 62)) ('inherited RCC', 'Disease', 'MESH:C538614', (200, 213)) ('tumour', 'Phenotype', 'HP:0002664', (107, 113)) ('BAP1', 'Gene', '8314', (16, 20)) ('BAP1', 'Gene', (94, 98)) ('tumours', 'Phenotype', 'HP:0002664', (107, 114)) ('BAP1', 'Gene', '8314', (140, 144)) ('BAP1', 'Gene', (16, 20)) ('mutations', 'Var', (21, 30)) 22464 29680948 Constitutional chromosome 3 translocations are a rare, but well-validated cause of familial RCC. ('Constitutional chromosome 3 translocations', 'Var', (0, 42)) ('familial RCC', 'Disease', 'MESH:C538614', (83, 95)) ('familial RCC', 'Disease', (83, 95)) 22470 29680948 Germline VHL, SDHx and FH mutations may predispose to phaeochromocytoma/paraganglioma and RCC, and on rare occasions renal tumours have been reported in association with mutations in the phaeochromocytoma genes TMEM127 and MAX. ('phaeochromocytoma', 'Disease', 'MESH:D010673', (54, 71)) ('tumours', 'Phenotype', 'HP:0002664', (123, 130)) ('VHL', 'Gene', '7428', (9, 12)) ('paraganglioma', 'Phenotype', 'HP:0002668', (72, 85)) ('mutations', 'Var', (26, 35)) ('SDHx', 'Chemical', '-', (14, 18)) ('renal tumours', 'Disease', 'MESH:D007680', (117, 130)) ('RCC', 'Disease', (90, 93)) ('tumour', 'Phenotype', 'HP:0002664', (123, 129)) ('phaeochromocytoma', 'Disease', (187, 204)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (187, 204)) ('RCC', 'Disease', 'MESH:C538614', (90, 93)) ('renal tumours', 'Disease', (117, 130)) ('TMEM127', 'Gene', (211, 218)) ('MAX', 'Gene', (223, 226)) ('predispose', 'Reg', (40, 50)) ('phaeochromocytoma/paraganglioma', 'Disease', (54, 85)) ('phaeochromocytoma/paraganglioma', 'Disease', 'MESH:D010235', (54, 85)) ('phaeochromocytoma', 'Disease', (54, 71)) ('VHL', 'Gene', (9, 12)) ('mutations', 'Var', (170, 179)) ('TMEM127', 'Gene', '55654', (211, 218)) ('SDHx', 'Gene', (14, 18)) 22471 29680948 Germline mutations in CDC73 are associated with hyperparathyroidism-jaw tumour syndrome, a very rare disorder that has been associated with Wilms tumour and, on one occasion, papillary RCC. ('Germline mutations', 'Var', (0, 18)) ('hyperparathyroidism-jaw tumour syndrome', 'Disease', (48, 87)) ('RCC', 'Disease', (185, 188)) ('Wilms tumour', 'Disease', (140, 152)) ('Wilms tumour', 'Disease', 'MESH:D009396', (140, 152)) ('Wilms tumour', 'Phenotype', 'HP:0002667', (140, 152)) ('tumour', 'Phenotype', 'HP:0002664', (72, 78)) ('a very rare disorder', 'Disease', (89, 109)) ('CDC73', 'Gene', (22, 27)) ('associated', 'Reg', (124, 134)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (48, 67)) ('CDC73', 'Gene', '79577', (22, 27)) ('tumour', 'Phenotype', 'HP:0002664', (146, 152)) ('associated', 'Reg', (32, 42)) ('hyperparathyroidism-jaw tumour syndrome', 'Disease', 'MESH:C563273', (48, 87)) ('jaw tumour', 'Phenotype', 'HP:0030792', (68, 78)) ('RCC', 'Disease', 'MESH:C538614', (185, 188)) ('a very rare disorder', 'Disease', 'MESH:D035583', (89, 109)) 22478 29680948 Germline SDHB and FLCN mutations have also been described in non-syndromic early-onset or bilateral RCC cases with no family history. ('SDHB', 'Gene', '6390', (9, 13)) ('described', 'Reg', (48, 57)) ('FLCN', 'Gene', (18, 22)) ('SDHB', 'Gene', (9, 13)) ('non-syndromic early-onset', 'Disease', (61, 86)) ('mutations', 'Var', (23, 32)) ('FLCN', 'Gene', '201163', (18, 22)) ('RCC', 'Disease', 'MESH:C538614', (100, 103)) ('RCC', 'Disease', (100, 103)) 22481 29680948 For less well studied genes such as BAP1 variant, interpretation can be more challenging. ('BAP1', 'Gene', (36, 40)) ('variant', 'Var', (41, 48)) ('BAP1', 'Gene', '8314', (36, 40)) 22482 29680948 Therefore, as suggested for diagnostic testing of hereditary phaeochromocytoma and paraganglioma, the establishment of agreed gene panels and curated databases of inherited RCC-associated gene variants would facilitate expert genetic testing. ('inherited RCC', 'Disease', 'MESH:C538614', (163, 176)) ('hereditary phaeochromocytoma', 'Phenotype', 'HP:0002666', (50, 78)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('variants', 'Var', (193, 201)) ('hereditary phaeochromocytoma and paraganglioma', 'Disease', 'MESH:D010235', (50, 96)) ('inherited RCC', 'Disease', (163, 176)) 22484 29680948 The mean age at diagnosis of symptomatic RCC in VHL disease was around 45 years compared to an average age of > 60 years in sporadic cases, but there is not an agreed age threshold at which earlier-onset cases should be tested for RCC predisposition mutations. ('RCC', 'Disease', (231, 234)) ('VHL disease', 'Disease', (48, 59)) ('RCC', 'Disease', 'MESH:C538614', (231, 234)) ('mutations', 'Var', (250, 259)) ('VHL disease', 'Disease', 'MESH:D006623', (48, 59)) ('RCC', 'Disease', 'MESH:C538614', (41, 44)) ('RCC', 'Disease', (41, 44)) 22487 29680948 Over the past 25 years, the identification and surveillance of large numbers of VHL mutation carriers has led to a broad consensus to how they should be investigated and managed. ('VHL', 'Gene', '7428', (80, 83)) ('VHL', 'Gene', (80, 83)) ('mutation', 'Var', (84, 92)) 22492 29680948 Consequently, individuals with germline FH mutations undergo annual MRI surveillance even though most will not develop a renal lesion and surgical intervention is indicated for small screen-detected lesions. ('renal lesion', 'Disease', 'MESH:D007674', (121, 133)) ('mutations', 'Var', (43, 52)) ('renal lesion', 'Disease', (121, 133)) 22493 29680948 For individuals with a germline BAP1 mutation, there is very limited information on the lifetime risks of RCC and the most appropriate screening modalities. ('germline', 'Var', (23, 31)) ('mutation', 'Var', (37, 45)) ('BAP1', 'Gene', '8314', (32, 36)) ('BAP1', 'Gene', (32, 36)) ('RCC', 'Disease', (106, 109)) ('RCC', 'Disease', 'MESH:C538614', (106, 109)) 22494 29680948 International data sharing of inherited RCC gene variant information and multicentre collaboration to pool results of natural history and screening protocols for mutation carriers are required to enable evidence-based surveillance programmes to be designed. ('variant', 'Var', (49, 56)) ('inherited RCC', 'Disease', 'MESH:C538614', (30, 43)) ('inherited RCC', 'Disease', (30, 43)) 22496 29680948 However, the tumour risks in SDHB mutation carriers are significantly less than originally thought and so there is (as in FH mutation carriers) a tension between over-investigation and early detection. ('less', 'NegReg', (70, 74)) ('SDHB', 'Gene', '6390', (29, 33)) ('tumour', 'Phenotype', 'HP:0002664', (13, 19)) ('mutation', 'Var', (34, 42)) ('tumour', 'Disease', 'MESH:D009369', (13, 19)) ('SDHB', 'Gene', (29, 33)) ('tumour', 'Disease', (13, 19)) 22503 29680948 Hence, it could be hypothesised that ablation of such tumourlets by administration of a synthetically lethal compound to young adults with VHL disease might reduce the risk of RCC at a later age. ('VHL disease', 'Disease', 'MESH:D006623', (139, 150)) ('RCC', 'Disease', (176, 179)) ('tumour', 'Disease', 'MESH:D009369', (54, 60)) ('RCC', 'Disease', 'MESH:C538614', (176, 179)) ('tumour', 'Disease', (54, 60)) ('ablation', 'Var', (37, 45)) ('reduce', 'NegReg', (157, 163)) ('VHL disease', 'Disease', (139, 150)) ('tumour', 'Phenotype', 'HP:0002664', (54, 60)) 22504 29680948 The development of novel therapeutic approaches to inherited RCC will require a deeper knowledge of the normal function of inherited RCC gene products and the consequences of mutations in the relevant pathways. ('inherited RCC', 'Disease', 'MESH:C538614', (51, 64)) ('inherited RCC', 'Disease', 'MESH:C538614', (123, 136)) ('mutations', 'Var', (175, 184)) ('inherited RCC', 'Disease', (123, 136)) ('inherited RCC', 'Disease', (51, 64)) 22505 29680948 However, a likely outcome of such research would be the potential for translating the knowledge of the pathogenesis of inherited RCC into novel treatments for sporadic RCC (as exemplified in VHL disease and the involvement of VHL inactivation in sporadic clear cell RCC). ('VHL', 'Gene', '7428', (226, 229)) ('VHL', 'Gene', (191, 194)) ('inactivation', 'Var', (230, 242)) ('VHL', 'Gene', '7428', (191, 194)) ('RCC', 'Disease', 'MESH:C538614', (266, 269)) ('VHL disease', 'Disease', (191, 202)) ('RCC', 'Disease', (266, 269)) ('RCC', 'Disease', 'MESH:C538614', (129, 132)) ('inherited RCC', 'Disease', (119, 132)) ('RCC', 'Disease', (129, 132)) ('VHL', 'Gene', (226, 229)) ('RCC', 'Disease', 'MESH:C538614', (168, 171)) ('RCC', 'Disease', (168, 171)) ('VHL disease', 'Disease', 'MESH:D006623', (191, 202)) ('inherited RCC', 'Disease', 'MESH:C538614', (119, 132)) 22511 29680948 International data sharing of inherited RCC gene variant information may enable evidence-based improvements in the diagnosis and management of these rare conditions. ('variant', 'Var', (49, 56)) ('inherited RCC', 'Disease', 'MESH:C538614', (30, 43)) ('inherited RCC', 'Disease', (30, 43)) 22517 29636949 It is generally believed that biochemical screening for pheochromocytoma is crucial to prevent the potentially catastrophic effects of a hypertensive crisis caused by manipulation of the adrenal mass 3, 4. ('pheochromocytoma', 'Disease', (56, 72)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (56, 72)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (56, 72)) ('manipulation', 'Var', (167, 179)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (137, 156)) ('hypertensive', 'Disease', (137, 149)) ('hypertensive', 'Disease', 'MESH:D006973', (137, 149)) 22523 29636949 Subsequently, a fluorodeoxyglucose (FDG) positron emission tomography (PET) scan showed high FDG uptake in both adrenal glands (left 7.5 x 6.4 x 4.6 cm, right 8.1 x 5.8 x 3.9 cm; Figure 1), without evidence for a primary tumor elsewhere. ('fluorodeoxyglucose', 'Chemical', 'MESH:D019788', (16, 34)) ('FDG', 'Chemical', 'MESH:D019788', (93, 96)) ('tumor', 'Phenotype', 'HP:0002664', (221, 226)) ('tumor', 'Disease', (221, 226)) ('FDG', 'Chemical', 'MESH:D019788', (36, 39)) ('FDG', 'Var', (93, 96)) ('tumor', 'Disease', 'MESH:D009369', (221, 226)) 22549 29636949 Blood pressure was normal (133/87 mmHg), and laboratory examination revealed a severe microcytic anemia (hemoglobin 3.5 mmol/L, NR 7.4-9.9 mmol/L (equal to 5.64 g/dL; NR 12-18 g/dL); MCV 67 fL, NR 80-100 fL), elevated liver enzymes (alkaline phosphatase 405 U/L, aspartate aminotransferase 46 U/L, gamma-glutamyl transpeptidase 109 U/L; NR: <120 U/l, <30 U/L, and <40 U/L, respectively), and a lactate dehydrogenase of 1757 U/L. ('MCV', 'Var', (183, 186)) ('lactate dehydrogenase', 'Enzyme', (394, 415)) ('anemia', 'Disease', 'MESH:D000740', (97, 103)) ('anemia', 'Disease', (97, 103)) ('liver enzymes', 'Enzyme', (218, 231)) ('gamma-glutamyl transpeptidase', 'Enzyme', (298, 327)) ('elevated liver enzymes', 'Phenotype', 'HP:0002910', (209, 231)) ('anemia', 'Phenotype', 'HP:0001903', (97, 103)) ('elevated', 'PosReg', (209, 217)) ('microcytic anemia', 'Phenotype', 'HP:0001935', (86, 103)) ('aspartate aminotransferase', 'Enzyme', (263, 289)) 22564 29636949 This may be an overestimation because of publication bias, however, even small size PAL may cause adrenal insufficiency, probably due to diffuse infiltration and complete destruction of the adrenal tissue architecture 5, 6, 7. ('cause', 'Reg', (92, 97)) ('adrenal insufficiency', 'Phenotype', 'HP:0000846', (98, 119)) ('adrenal insufficiency', 'Disease', 'MESH:D000309', (98, 119)) ('adrenal insufficiency', 'Disease', (98, 119)) ('PAL', 'Var', (84, 87)) ('PAL', 'Phenotype', 'HP:0030069', (84, 87)) 22586 29636949 Nevertheless, for the purpose of localizing pheochromocytoma, 1.23I-MIBG scanning is preferred over FDG-PET scanning because of its higher sensitivity (85-94% and 76%, respectively 4). ('FDG', 'Chemical', 'MESH:D019788', (100, 103)) ('pheochromocytoma', 'Disease', (44, 60)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (44, 60)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (44, 60)) ('1.23I-MIBG', 'Chemical', '-', (62, 72)) ('1.23I-MIBG', 'Var', (62, 72)) 22735 28128698 Germline genetic testing revealed no clinically significant alteration in the SDHB, SDHC or SDHD genes; however, a variant of unknown clinical significance, p.H50R or c.149A>G, in exon 2 of the SDHD gene was identified. ('p.H50R', 'Var', (157, 163)) ('SDHD', 'Gene', '6392', (194, 198)) ('SDHD', 'Gene', '6392', (92, 96)) ('SDHC', 'Gene', '6391', (84, 88)) ('c.149A>G', 'Var', (167, 175)) ('SDHB', 'Gene', '6390', (78, 82)) ('SDHD', 'Gene', (194, 198)) ('SDHD', 'Gene', (92, 96)) ('SDHB', 'Gene', (78, 82)) ('c.149A>G', 'Mutation', 'rs11214077', (167, 175)) ('p.H50R', 'Mutation', 'rs11214077', (157, 163)) ('SDHC', 'Gene', (84, 88)) 22786 28128698 A recent study demonstrated that 53% of patients with at least one extra-adrenal paraganglioma had an identified germline mutation. ('paraganglioma', 'Phenotype', 'HP:0002668', (81, 94)) ('germline mutation', 'Var', (113, 130)) ('patients', 'Species', '9606', (40, 48)) ('paraganglioma', 'Disease', (81, 94)) ('paraganglioma', 'Disease', 'MESH:D010235', (81, 94)) 22788 28128698 In patients with SDHB mutations, primary tumor size has been found to be an age-independent predictor of patient survival and metastasis. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('patient', 'Species', '9606', (105, 112)) ('tumor', 'Disease', (41, 46)) ('patient', 'Species', '9606', (3, 10)) ('SDHB', 'Gene', '6390', (17, 21)) ('patients', 'Species', '9606', (3, 11)) ('mutations', 'Var', (22, 31)) ('SDHB', 'Gene', (17, 21)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) 22790 28128698 Thus, in order to achieve the best possible clinical outcome, patients discovered to have any SDHB mutation are recommended to undergo genetic counseling and early and regular evaluations for the development of PCC/PGL. ('SDHB', 'Gene', (94, 98)) ('mutation', 'Var', (99, 107)) ('PCC', 'Gene', '1421', (211, 214)) ('patients', 'Species', '9606', (62, 70)) ('SDHB', 'Gene', '6390', (94, 98)) ('PCC', 'Gene', (211, 214)) 22876 27869719 In a series of in vitro, animal, and human studies, these workers demonstrated 123I-iodometomidate's high binding specificity in tissues of adrenocortical origin, similar pharmacodynamic properties to etomidate/metomidate, lack of toxicity or mutagenicity, and excellent imaging properties in both mice and patients. ('etomidate', 'Chemical', 'MESH:D005045', (201, 210)) ('mice', 'Species', '10090', (298, 302)) ('metomidate', 'Chemical', 'MESH:C084586', (88, 98)) ('binding', 'Interaction', (106, 113)) ('adrenocortical', 'Disease', 'MESH:D018268', (140, 154)) ('metomidate', 'Chemical', 'MESH:C084586', (211, 221)) ('123I-iodometomidate', 'Var', (79, 98)) ('etomidate', 'Chemical', 'MESH:D005045', (212, 221)) ('etomidate', 'Chemical', 'MESH:D005045', (89, 98)) ('human', 'Species', '9606', (37, 42)) ('patients', 'Species', '9606', (307, 315)) ('toxicity', 'Disease', 'MESH:D064420', (231, 239)) ('123I-iodometomidate', 'Chemical', 'MESH:C529450', (79, 98)) ('toxicity', 'Disease', (231, 239)) ('adrenocortical', 'Disease', (140, 154)) 22989 27069748 The tumor is usually isointense or hypointense on T1-weighted and hyperintense on T2-weighted, with a great enhancement after a gadolinium injection. ('tumor', 'Disease', (4, 9)) ('enhancement', 'PosReg', (108, 119)) ('hypointense', 'Var', (35, 46)) ('hyperintense', 'Var', (66, 78)) ('gadolinium', 'Chemical', 'MESH:D005682', (128, 138)) ('tumor', 'Disease', 'MESH:D009369', (4, 9)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) 23032 26645353 Moreover, creatinine kinase and lactose dehydrogenase increased rapidly to 7066 and 609 IU/L, respectively. ('lactose dehydrogenase increased', 'Phenotype', 'HP:0025435', (32, 63)) ('7066', 'Var', (75, 79)) ('lactose dehydrogenase', 'Enzyme', (32, 53)) ('creatinine', 'Chemical', 'MESH:D003404', (10, 20)) ('increased', 'PosReg', (54, 63)) ('creatinine kinase', 'MPA', (10, 27)) 23087 24765414 Germline mutations have been identified in these diseases in, respectively, the proto-oncogene RET, and the tumor suppressor genes VHL and NF1. ('Germline mutations', 'Var', (0, 18)) ('tumor', 'Disease', 'MESH:D009369', (108, 113)) ('RET', 'Gene', (95, 98)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('NF1', 'Gene', (139, 142)) ('NF1', 'Gene', '4763', (139, 142)) ('tumor', 'Disease', (108, 113)) ('identified', 'Reg', (29, 39)) ('VHL', 'Disease', 'MESH:D006623', (131, 134)) ('RET', 'Gene', '5979', (95, 98)) ('VHL', 'Disease', (131, 134)) 23149 20726977 All operations were performed after at least two weeks of our standard pre-operative blockade with phenoxybenzamine 10 mg BID and metyrosine 250 mg TID. ('BID', 'Gene', (122, 125)) ('metyrosine 250 mg', 'Var', (130, 147)) ('BID', 'Gene', '637', (122, 125)) ('metyrosine', 'Chemical', 'MESH:D019805', (130, 140)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (99, 115)) 23217 21444676 Aberrant mTOR activation is a frequent event in cancer, that commonly results from heterozygous loss of PTEN. ('activation', 'PosReg', (14, 24)) ('Aberrant', 'Var', (0, 8)) ('cancer', 'Phenotype', 'HP:0002664', (48, 54)) ('mTOR', 'Gene', (9, 13)) ('heterozygous', 'Var', (83, 95)) ('cancer', 'Disease', (48, 54)) ('cancer', 'Disease', 'MESH:D009369', (48, 54)) ('results from', 'Reg', (70, 82)) ('PTEN', 'Gene', (104, 108)) 23218 21444676 Here, we show for the first time a differential protein expression between S6K1 and S6K2 in both mouse and human tissues. ('S6K2', 'Var', (84, 88)) ('protein expression', 'MPA', (48, 66)) ('human', 'Species', '9606', (107, 112)) ('differential', 'Reg', (35, 47)) ('mouse', 'Species', '10090', (97, 102)) ('S6K1', 'Var', (75, 79)) 23219 21444676 Additionally, the inactivation of S6k1 in the context of Pten heterozygosity (Pten+/-) suggests a differential requirement for this protein across multiple tissues. ('inactivation', 'Var', (18, 30)) ('Pten+/-)', 'Gene', '19211', (78, 86)) ('S6k1', 'Gene', (34, 38)) ('S6k1', 'Gene', '72508', (34, 38)) ('Pten+/-', 'Gene', (78, 85)) 23220 21444676 Accordingly, we find that deletion of S6k1 markedly impairs Pten+/- mediated adrenal tumorigenesis, specifically due to low expression of S6k2. ('tumor', 'Disease', (85, 90)) ('S6k2', 'Protein', (138, 142)) ('deletion', 'Var', (26, 34)) ('low', 'NegReg', (120, 123)) ('S6k1', 'Gene', '72508', (38, 42)) ('tumor', 'Disease', 'MESH:D009369', (85, 90)) ('expression', 'MPA', (124, 134)) ('S6k1', 'Gene', (38, 42)) ('impairs', 'NegReg', (52, 59)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) 23234 21444676 In addition, knockout mice for S6k1 or S6k2 alone demonstrate that there is redundancy between both genes, and it has also been suggested that inactivation of one may be compensated for through upregulation of the other. ('inactivation', 'Var', (143, 155)) ('upregulation', 'PosReg', (194, 206)) ('redundancy', 'MPA', (76, 86)) ('rat', 'Species', '10116', (57, 60)) ('S6k1', 'Gene', (31, 35)) ('S6k1', 'Gene', '72508', (31, 35)) ('mice', 'Species', '10090', (22, 26)) 23236 21444676 However, overexpression of both S6K1 and S6K2 have been reported in breast cancer, while a recent report showed that only S6k1 is required for insulinoma formation induced by expression of constitutively active Akt1 in the mouse pancreas. ('overexpression', 'PosReg', (9, 23)) ('mouse', 'Species', '10090', (223, 228)) ('breast cancer', 'Disease', 'MESH:D001943', (68, 81)) ('breast cancer', 'Phenotype', 'HP:0003002', (68, 81)) ('reported', 'Reg', (56, 64)) ('Akt1', 'Gene', '11651', (211, 215)) ('S6k1', 'Gene', '72508', (122, 126)) ('breast cancer', 'Disease', (68, 81)) ('S6k1', 'Gene', (122, 126)) ('S6K1', 'Var', (32, 36)) ('Akt1', 'Gene', (211, 215)) ('S6K2', 'Var', (41, 45)) ('insulinoma', 'Phenotype', 'HP:0012197', (143, 153)) ('cancer', 'Phenotype', 'HP:0002664', (75, 81)) ('insulinoma', 'Disease', (143, 153)) ('insulinoma', 'Disease', 'MESH:D007340', (143, 153)) 23237 21444676 Here we show that S6k1 genetic deletion can suppress phenotypes mediated by Pten haploinsufficiency in an exquisite tissue-specific fashion. ('haploinsufficiency', 'Disease', 'MESH:D058495', (81, 99)) ('phenotypes', 'MPA', (53, 63)) ('suppress', 'NegReg', (44, 52)) ('haploinsufficiency', 'Disease', (81, 99)) ('S6k1', 'Gene', '72508', (18, 22)) ('S6k1', 'Gene', (18, 22)) ('genetic deletion', 'Var', (23, 39)) ('Pten', 'Gene', (76, 80)) 23247 21444676 The following antibodies were used for western blot analysis: GAPDH (14C10 Cell Signaling Technology); S6K1 (Cell Signaling Technology, 49D7 Rabbit mAb); S6K2 [p70 S6 kinase beta (C-19) Santa Cruz Biotechnology]; phospho-S6 (S235/S236) (Cell Signaling Technology); total S6 (Cell Signaling Technology); Pten (Cell Signaling Technology). ('GAPDH', 'Gene', '100009074', (62, 67)) ('phospho-S6 (S235/S236', 'Var', (213, 234)) ('GAPDH', 'Gene', (62, 67)) ('S6 kinase', 'Gene', '72508', (164, 173)) ('Rabbit', 'Species', '9986', (141, 147)) ('S6 kinase', 'Gene', (164, 173)) 23253 21444676 Amino acid sequences for human (Homo sapiens): RPS6Kbeta1 (NP_003152.1), RPS6Kbeta2 (NP_003943.2); cow (Bos taurus): RPS6Kbeta1 (NP_991385.1), RPS6Kbeta2 (XP_582478.4); rat (Rattus norvegicus): RPS6Kbeta1 (NP_114191.1), RPS6Kbeta2 (NP_001010962); mouse (Mus musculus): RPS6Kbeta1 (NP_001107806), RPS6Kbeta2 (NP_067460.1); rabbit (O cuniculus): RPS6Kbeta1 (NP_001095160); chicken (Gallus gallus): RPS6K (NP_001025892.1); zebrafish (Danio rerio): RPS6K (NP_998241.1); frog (Xenopus laevis): RPS6Kb-1 (NP_001080935). ('rat', 'Species', '10116', (169, 172)) ('mouse', 'Species', '10090', (247, 252)) ('NP_001080935', 'Var', (499, 511)) ('chicken', 'Species', '9031', (371, 378)) ('Xenopus laevis', 'Species', '8355', (472, 486)) ('rabbit', 'Species', '9986', (322, 328)) ('Homo sapiens', 'Species', '9606', (32, 44)) ('human', 'Species', '9606', (25, 30)) ('cow', 'Species', '9913', (99, 102)) ('Rattus norvegicus', 'Species', '10116', (174, 191)) ('zebrafish', 'Species', '7955', (420, 429)) ('Gallus gallus', 'Species', '9031', (380, 393)) ('Bos taurus', 'Species', '9913', (104, 114)) ('Mus musculus', 'Species', '10090', (254, 266)) ('Danio rerio', 'Species', '7955', (431, 442)) ('RPS6Kb-1', 'Gene', '394276', (489, 497)) ('RPS6Kb-1', 'Gene', (489, 497)) 23255 21444676 In particular, we have focused on 4 specific genotypes for our study: wild-type (wt), S6k1-/-, Pten+/-, and S6k1-/-;Pten+/- mice. ('Pten+/- mice', 'Gene', (116, 128)) ('S6k1-', 'Gene', '72508', (108, 113)) ('Pten+/- mice', 'Gene', '19211', (116, 128)) ('Pten+/-', 'Var', (95, 102)) ('S6k1-', 'Gene', (108, 113)) ('S6k1-', 'Gene', (86, 91)) ('S6k1-', 'Gene', '72508', (86, 91)) 23259 21444676 Indeed, the lymph nodes from Pten+/- and S6k1-/-;Pten+/- mice were found to be indistinguishable in composition, with lymph nodes from both genotypes exhibiting an expansion of B- and T-lymphocytes as characterized by immunohistochemical staining (IHC) with the B-lymphocyte specific marker B220 and the T-lymphocyte marker CD3 (Fig. ('B220', 'Gene', '19264', (291, 295)) ('B220', 'Gene', (291, 295)) ('Pten+/- mice', 'Gene', (49, 61)) ('CD3', 'Gene', (324, 327)) ('Pten+/- mice', 'Gene', '19211', (49, 61)) ('Pten+/-', 'Var', (29, 36)) ('CD3', 'Gene', '12501', (324, 327)) ('S6k1-', 'Gene', (41, 46)) ('S6k1-', 'Gene', '72508', (41, 46)) 23260 21444676 Furthermore, lymph nodes from Pten+/- and S6k1-/-;Pten+/- mice showed no significant differences in positive staining for the cell proliferation marker Ki-67, (Fig. ('rat', 'Species', '10116', (138, 141)) ('Pten+/-', 'Var', (30, 37)) ('S6k1-', 'Gene', (42, 47)) ('Pten+/- mice', 'Gene', (50, 62)) ('S6k1-', 'Gene', '72508', (42, 47)) ('Pten+/- mice', 'Gene', '19211', (50, 62)) 23261 21444676 Thus, these data suggest that S6k1 deletion does not impact the increased lymph node proliferation triggered by Pten heterozygous loss. ('lymph node proliferation', 'CPA', (74, 98)) ('Pten', 'Gene', (112, 116)) ('S6k1', 'Gene', (30, 34)) ('rat', 'Species', '10116', (92, 95)) ('S6k1', 'Gene', '72508', (30, 34)) ('deletion', 'Var', (35, 43)) 23263 21444676 Taken together, our data suggest that S6k1 deletion has little impact on the proliferative advantage conferred by Pten heterozygous loss, consistent with the comparable survival rates between Pten+/- and S6k1-/-;Pten+/- cohorts of mice. ('Pten', 'Gene', (114, 118)) ('S6k1', 'Gene', '72508', (204, 208)) ('S6k1', 'Gene', (204, 208)) ('proliferative advantage', 'CPA', (77, 100)) ('S6k1-', 'Gene', '72508', (204, 209)) ('deletion', 'Var', (43, 51)) ('rat', 'Species', '10116', (84, 87)) ('S6k1', 'Gene', '72508', (38, 42)) ('S6k1', 'Gene', (38, 42)) ('mice', 'Species', '10090', (231, 235)) ('rat', 'Species', '10116', (178, 181)) ('S6k1-', 'Gene', (204, 209)) 23265 21444676 In order to further characterize the S6k1-/-;Pten+/- mice we examined the impact of S6k1 genetic deletion in tumorigenesis driven by Pten heterozygous loss. ('S6k1', 'Gene', (84, 88)) ('S6k1', 'Gene', (37, 41)) ('S6k1-', 'Gene', (37, 42)) ('genetic deletion', 'Var', (89, 105)) ('S6k1-', 'Gene', '72508', (37, 42)) ('S6k1', 'Gene', '72508', (84, 88)) ('S6k1', 'Gene', '72508', (37, 41)) ('Pten+/- mice', 'Gene', '19211', (45, 57)) ('Pten+/- mice', 'Gene', (45, 57)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('tumor', 'Disease', (109, 114)) 23267 21444676 However, some of the tumors driven by Pten heterozygosity occur after a long latency and at incomplete penetrance. ('heterozygosity', 'Var', (43, 57)) ('tumors', 'Disease', 'MESH:D009369', (21, 27)) ('tumors', 'Disease', (21, 27)) ('tumors', 'Phenotype', 'HP:0002664', (21, 27)) ('Pten', 'Gene', (38, 42)) ('tumor', 'Phenotype', 'HP:0002664', (21, 26)) 23274 21444676 At 13-15 months of age the S6k1-/-;Pten+/- still showed a markedly lower penetrance of the tumor phenotype compared to Pten+/- mice (40% in S6k1-/-;Pten+/- versus 100% in Pten+/-) (Fig. ('Pten+/- mice', 'Gene', '19211', (119, 131)) ('Pten+/-', 'Var', (148, 155)) ('tumor', 'Disease', (91, 96)) ('S6k1-', 'Gene', (140, 145)) ('tumor', 'Disease', 'MESH:D009369', (91, 96)) ('Pten+/-)', 'Gene', '19211', (171, 179)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('S6k1-', 'Gene', '72508', (140, 145)) ('S6k1-', 'Gene', (27, 32)) ('penetrance', 'MPA', (73, 83)) ('Pten+/-', 'Gene', (171, 178)) ('lower', 'NegReg', (67, 72)) ('S6k1-', 'Gene', '72508', (27, 32)) ('Pten+/- mice', 'Gene', (119, 131)) 23275 21444676 We also identified a profound suppression of proliferation as characterized by Ki-67 staining in the adrenal medullas of the S6k1-/-;Pten+/- versus those of the Pten+/- mice (Fig. ('rat', 'Species', '10116', (52, 55)) ('Pten+/- mice', 'Gene', '19211', (161, 173)) ('Pten+/- mice', 'Gene', (161, 173)) ('proliferation', 'CPA', (45, 58)) ('Pten+/-', 'Var', (133, 140)) ('suppression', 'NegReg', (30, 41)) ('S6k1-', 'Gene', (125, 130)) ('S6k1-', 'Gene', '72508', (125, 130)) 23276 21444676 In addition, deletion of S6k1 in the Pten+/- background resulted in a notable reduction in phoshpo-S6 in these adrenal glands (Fig. ('phoshpo-S6', 'MPA', (91, 101)) ('reduction', 'NegReg', (78, 87)) ('S6k1', 'Gene', (25, 29)) ('deletion', 'Var', (13, 21)) ('S6k1', 'Gene', '72508', (25, 29)) 23279 21444676 Interestingly, an analysis of the effect of S6k1 inactivation on uterine tumor formation in Pten+/- female mice, a less penetrant phenotype in this background, leads to a mildly reduced penetrance when compared with Pten+/- females alone (supplementary Fig. ('tumor', 'Disease', 'MESH:D009369', (73, 78)) ('S6k1', 'Gene', '72508', (44, 48)) ('S6k1', 'Gene', (44, 48)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('inactivation', 'Var', (49, 61)) ('tumor', 'Disease', (73, 78)) ('mice', 'Species', '10090', (107, 111)) ('uterine tumor', 'Phenotype', 'HP:0010784', (65, 78)) ('penetrance', 'MPA', (186, 196)) ('reduced', 'NegReg', (178, 185)) 23281 21444676 In order to understand the molecular basis underlying the tissue specific differential response to deletion of S6k1, we decided to analyze in depth the expression status of both S6k1 and S6k2 across a panel of tissues. ('S6k1', 'Gene', '72508', (111, 115)) ('deletion', 'Var', (99, 107)) ('S6k1', 'Gene', (178, 182)) ('S6k1', 'Gene', '72508', (178, 182)) ('S6k1', 'Gene', (111, 115)) 23282 21444676 Previously published data have reported the mRNA for S6k1 and S6k2 to be ubiquitously expressed in all tissues analyzed. ('S6k1', 'Gene', '72508', (53, 57)) ('S6k1', 'Gene', (53, 57)) ('S6k2', 'Var', (62, 66)) 23285 21444676 Additionally, we carried out western analysis on adrenal glands from wt, Pten+/- and S6k1-/-;Pten+/- mice and observed that S6k2 protein levels did not increase in the S6k1-/-;Pten+/- glands (Fig. ('Pten+/-', 'Var', (73, 80)) ('S6k2 protein levels', 'MPA', (124, 143)) ('S6k1-', 'Gene', (85, 90)) ('S6k1-', 'Gene', (168, 173)) ('S6k1-', 'Gene', '72508', (168, 173)) ('Pten+/- mice', 'Gene', '19211', (93, 105)) ('Pten+/- mice', 'Gene', (93, 105)) ('S6k1-', 'Gene', '72508', (85, 90)) 23287 21444676 Taken together, these data offer an explanation why S6k1 deletion has a differential impact on the phenotypes dictated by Pten heterozygosity. ('deletion', 'Var', (57, 65)) ('S6k1', 'Gene', '72508', (52, 56)) ('impact', 'Reg', (85, 91)) ('S6k1', 'Gene', (52, 56)) 23288 21444676 The minimal effect of S6k1 loss on uterine tumor formation and the lack of an effect on lymph node proliferation may be accounted for through compensation and redundancy with S6k2, while S6k1 deletion has a pronounced effect on the pheochromocytoma incidence due to low protein expression of S6k2 in the adrenal gland. ('S6k1', 'Gene', '72508', (187, 191)) ('low', 'NegReg', (266, 269)) ('S6k1', 'Gene', (22, 26)) ('pheochromocytoma', 'Disease', (232, 248)) ('tumor', 'Disease', 'MESH:D009369', (43, 48)) ('S6k1', 'Gene', '72508', (22, 26)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (232, 248)) ('deletion', 'Var', (192, 200)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (232, 248)) ('rat', 'Species', '10116', (106, 109)) ('tumor', 'Disease', (43, 48)) ('uterine tumor', 'Phenotype', 'HP:0010784', (35, 48)) ('S6k1', 'Gene', (187, 191)) ('protein expression', 'MPA', (270, 288)) 23290 21444676 It has been previously reported that both S6K1 and S6K2 are ubiquitously expressed in humans at the mRNA level. ('S6K1', 'Var', (42, 46)) ('S6K2', 'Var', (51, 55)) ('humans', 'Species', '9606', (86, 92)) 23305 21444676 Specifically, our data constitute the rationale to develop an S6K1-specific inhibitor to target tumors triggered by loss of PTEN in tissues having low expression of S6K2. ('PTEN', 'Gene', (124, 128)) ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('tumors', 'Disease', (96, 102)) ('tumors', 'Phenotype', 'HP:0002664', (96, 102)) ('tumors', 'Disease', 'MESH:D009369', (96, 102)) ('rat', 'Species', '10116', (38, 41)) ('loss', 'Var', (116, 120)) 23307 21444676 An excellent example for such an S6K1 targeted therapy is represented by the treatment of pheochromocytoma, as is clearly demonstrated through our genetic inactivation of S6k1 in the adrenal gland of Pten+/- mice and our concomitant human data. ('pheochromocytoma', 'Disease', 'MESH:D010673', (90, 106)) ('human', 'Species', '9606', (233, 238)) ('pheochromocytoma', 'Disease', (90, 106)) ('genetic inactivation', 'Var', (147, 167)) ('S6k1', 'Gene', (171, 175)) ('rat', 'Species', '10116', (129, 132)) ('S6k1', 'Gene', '72508', (171, 175)) ('Pten+/- mice', 'Gene', '19211', (200, 212)) ('Pten+/- mice', 'Gene', (200, 212)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (90, 106)) 23328 18437026 Cardiac enzyme showed myocardial damage; creatine kinase (CK) 667 IU/L (normal <250), CK-MB 34.6 ng/mL (normal <5), and myoglobin 1,462 ng/mL (normal <110) (Fig. ('CK-MB', 'Var', (86, 91)) ('myoglobin', 'MPA', (120, 129)) ('creatine kinase', 'MPA', (41, 56)) ('myocardial damage', 'Disease', (22, 39)) ('myocardial damage', 'Disease', 'MESH:D009202', (22, 39)) 23367 18437026 Preoperative preparation with volume replacement and alpha-adrenergic blockades (usually prazocin or phenoxylbenzamine) have accounted for the most significant reductions in perioperative mortality. ('reductions', 'NegReg', (160, 170)) ('alpha-adrenergic blockades', 'Protein', (53, 79)) ('prazocin', 'Chemical', '-', (89, 97)) ('phenoxylbenzamine', 'Chemical', '-', (101, 118)) ('perioperative', 'MPA', (174, 187)) ('phenoxylbenzamine', 'Var', (101, 118)) 23395 32561571 Third, 49 of the 570 variants of unknown significance (VUSs) were selected to undergo gene products expression analyses. ('variants', 'Var', (21, 29)) ('VUSs', 'Disease', 'None', (55, 59)) ('VUSs', 'Disease', (55, 59)) 23404 32561571 Variants were classified as five categories: (1) pathogenic, (2) likely pathogenic, (3) benign, (4) likely benign and (5) VUSs. ('VUSs', 'Disease', 'None', (122, 126)) ('VUSs', 'Disease', (122, 126)) ('Variants', 'Var', (0, 8)) 23407 32561571 293A cells were transfected with recombinant plasmids of Flag-gene (wild type) and Flag-gene (mutant) using Lipofectamine 3000 Reagent (ThermoFisher) according to the manufacturer's instructions. ('293A', 'CellLine', 'CVCL:6910', (0, 4)) ('Flag-gene', 'Gene', (57, 66)) ('Lipofectamine 3000', 'Chemical', '-', (108, 126)) ('mutant', 'Var', (94, 100)) ('Flag-gene', 'Gene', (83, 92)) 23415 32561571 According to ACMG guidelines, 21 variants were found to be pathogenic or likely pathogenic (table 2), which may be responsible for monogenic forms of hypertension. ('pathogenic', 'Reg', (59, 69)) ('hypertension', 'Disease', 'MESH:D006973', (150, 162)) ('hypertension', 'Disease', (150, 162)) ('hypertension', 'Phenotype', 'HP:0000822', (150, 162)) ('variants', 'Var', (33, 41)) 23416 32561571 Five hundred and seventy variants were considered to be VUSs, whose clinical significance remained unknown. ('VUSs', 'Disease', (56, 60)) ('variants', 'Var', (25, 33)) ('VUSs', 'Disease', 'None', (56, 60)) 23418 32561571 LoF variants in all of the six genes are known mechanism of hypertension. ('hypertension', 'Disease', (60, 72)) ('variants', 'Var', (4, 12)) ('hypertension', 'Phenotype', 'HP:0000822', (60, 72)) ('LoF', 'NegReg', (0, 3)) ('hypertension', 'Disease', 'MESH:D006973', (60, 72)) 23419 32561571 Additionally, in four of the six genes (ARMC5, SDHD, MEN1 and VHL ), stop-gain or frame-shift variants were proved to be targets of nonsense-mediated mRNA decay. ('nonsense-mediated mRNA decay', 'Var', (134, 162)) ('VHL', 'Gene', (64, 67)) ('ARMC5', 'Gene', '79798', (40, 45)) ('ARMC5', 'Gene', (40, 45)) ('frame-shift variants', 'Var', (84, 104)) ('VHL', 'Gene', '7428', (64, 67)) ('MEN1', 'Gene', (54, 58)) ('SDHD', 'Gene', '6392', (48, 52)) ('MEN1', 'Gene', '4221', (54, 58)) ('SDHD', 'Gene', (48, 52)) 23421 32561571 The first patient was a compound heterozygote of two CYP17A1 variants with 17-alpha-hydroxylase deficiency manifestations. ('patient', 'Species', '9606', (10, 17)) ('CYP17A1', 'Gene', (53, 60)) ('CYP17A1', 'Gene', '1586', (53, 60)) ('hydroxylase deficiency', 'Disease', 'MESH:D054882', (84, 106)) ('hydroxylase deficiency', 'Disease', (84, 106)) ('variants', 'Var', (61, 69)) 23422 32561571 She also carried a predicted deleterious heterozygous SCNN1B variant. ('SCNN1B', 'Gene', (54, 60)) ('SCNN1B', 'Gene', '6338', (54, 60)) ('variant', 'Var', (61, 68)) 23425 32561571 The second patient carried a heterozygous variant of SCNN1G and a heterozygous variant of ARMC5 with Cushing syndrome manifestations. ('ARMC5', 'Gene', '79798', (90, 95)) ('ARMC5', 'Gene', (90, 95)) ('SCNN1G', 'Gene', (53, 59)) ('Cushing syndrome', 'Disease', (101, 117)) ('SCNN1G', 'Gene', '6340', (53, 59)) ('Cushing syndrome', 'Disease', 'MESH:D003480', (101, 117)) ('patient', 'Species', '9606', (11, 18)) ('Cushing syndrome', 'Phenotype', 'HP:0003118', (101, 117)) ('variant', 'Var', (42, 49)) 23428 32561571 The third patient carried a heterozygous variant of CACNA1H and a heterozygous variant of WNK4 with pseudohypoaldosteronism, type IIB manifestations except for normal blood potassium. ('potassium', 'Chemical', 'MESH:D011188', (173, 182)) ('pseudohypoaldosteronism', 'Disease', 'MESH:D011546', (100, 123)) ('patient', 'Species', '9606', (10, 17)) ('CACNA1H', 'Gene', (52, 59)) ('WNK4', 'Gene', '65266', (90, 94)) ('WNK4', 'Gene', (90, 94)) ('pseudohypoaldosteronism', 'Disease', (100, 123)) ('CACNA1H', 'Gene', '8912', (52, 59)) ('pseudohypoaldosteronism', 'Phenotype', 'HP:0008242', (100, 123)) ('variant', 'Var', (41, 48)) 23432 32561571 Although some variants were predicted to be LoF variants, expression analyses were still performed to confirm their roles in 293A cell lines. ('LoF', 'NegReg', (44, 47)) ('variants', 'Var', (14, 22)) ('293A', 'CellLine', 'CVCL:6910', (125, 129)) 23433 32561571 However, two stop gain variants in ARMC5 and VHL resulted in significantly reduced mRNA levels (online supplementary figure 3), which may be due to the nonsense-mediated mRNA decay. ('VHL', 'Gene', '7428', (45, 48)) ('ARMC5', 'Gene', '79798', (35, 40)) ('mRNA levels', 'MPA', (83, 94)) ('reduced', 'NegReg', (75, 82)) ('variants', 'Var', (23, 31)) ('VHL', 'Gene', (45, 48)) ('ARMC5', 'Gene', (35, 40)) 23435 32561571 Therefore, 27 variants were regarded as potential functional VUSs (online supplementary table 8). ('variants', 'Var', (14, 22)) ('VUSs', 'Disease', (61, 65)) ('VUSs', 'Disease', 'None', (61, 65)) 23437 32561571 Their phenotypes were all consistent with the clinical manifestations of the potential functional variants but not related with VUSs they harboured (online supplementary table 11). ('VUSs', 'Disease', (128, 132)) ('variants', 'Var', (98, 106)) ('VUSs', 'Disease', 'None', (128, 132)) 23438 32561571 We totally identified 33 individuals with pathogenic or likely pathogenic variants, 49 individuals with potential functional variants, 572 individuals with VUSs, and one person with a benign variant (figure 3A, table 2). ('VUSs', 'Disease', (156, 160)) ('variants', 'Var', (74, 82)) ('variants', 'Var', (125, 133)) ('pathogenic', 'Reg', (42, 52)) ('pathogenic', 'Reg', (63, 73)) ('VUSs', 'Disease', 'None', (156, 160)) 23439 32561571 Diseases that harboured the greatest burden of pathogenic, likely pathogenic or potential functional variants were PA and PPGL (figure 3B). ('PPGL', 'Chemical', '-', (122, 126)) ('variants', 'Var', (101, 109)) ('PA', 'Phenotype', 'HP:0011736', (115, 117)) ('PPGL', 'Disease', (122, 126)) 23441 32561571 Pedigree analyses uncovered a known pathogenic variant responsible for MEN2B (Family 1, RET c.T2753C), two novel pathogenic variants for pre-eclampsia (Families 2 and 3, CACNA1D c.A920G and c.G4370A p.R1457Q), a novel pathogenic variant for Liddle syndrome (Family 4, SCNN1B c.C1513T) and a known pathogenic variant for 17alpha-hydroxylase deficiency syndrome (Family 5, CYP17A1 c.985_987delinsAA). ('c.985_987delinsAA', 'Mutation', 'c.985_987delinsAA', (379, 396)) ('c.A920G', 'Var', (178, 185)) ('RET', 'Gene', '5979', (88, 91)) ('-hydroxylase deficiency syndrome', 'Disease', 'MESH:D054882', (327, 359)) ('c.G4370A', 'Mutation', 'rs781726820', (190, 198)) ('eclampsia', 'Disease', (141, 150)) ('Liddle syndrome', 'Disease', (241, 256)) ('Liddle syndrome', 'Disease', 'MESH:D056929', (241, 256)) ('p.R1457Q', 'Var', (199, 207)) ('c.A920G', 'Mutation', 'c.920A>G', (178, 185)) ('c.G4370A p.R1457Q', 'Var', (190, 207)) ('eclampsia', 'Phenotype', 'HP:0100601', (141, 150)) ('c.C1513T', 'Var', (275, 283)) ('CYP17A1', 'Gene', (371, 378)) ('c.C1513T', 'Mutation', 'rs766620267', (275, 283)) ('CYP17A1', 'Gene', '1586', (371, 378)) ('RET', 'Gene', (88, 91)) ('-hydroxylase deficiency syndrome', 'Disease', (327, 359)) ('SCNN1B', 'Gene', (268, 274)) ('p.R1457Q', 'Mutation', 'rs781726820', (199, 207)) ('MEN2B', 'Gene', (71, 76)) ('MEN2B', 'Gene', '5979', (71, 76)) ('pre-eclampsia', 'Phenotype', 'HP:0100602', (137, 150)) ('SCNN1B', 'Gene', '6338', (268, 274)) ('CACNA1D', 'Gene', '776', (170, 177)) ('CACNA1D', 'Gene', (170, 177)) ('eclampsia', 'Disease', 'MESH:D004461', (141, 150)) ('c.T2753C', 'Mutation', 'rs74799832', (92, 100)) 23442 32561571 CACNA1D variants have been well documented to be a causative gene responsible for PA. ('CACNA1D', 'Gene', '776', (0, 7)) ('PA', 'Phenotype', 'HP:0011736', (82, 84)) ('CACNA1D', 'Gene', (0, 7)) ('variants', 'Var', (8, 16)) 23443 32561571 However, in family 2 and family 3, the probands and their affected relatives with CACNA1D mutations cannot be diagnosed as PA for failing to surpass the screening test ARR or confirmatory test. ('PA', 'Phenotype', 'HP:0011736', (123, 125)) ('CACNA1D', 'Gene', (82, 89)) ('mutations', 'Var', (90, 99)) ('CACNA1D', 'Gene', '776', (82, 89)) 23444 32561571 This suggest that CACNA1D variants identified in the current study may be responsible for pre-eclampsia rather than PA. ('CACNA1D', 'Gene', '776', (18, 25)) ('CACNA1D', 'Gene', (18, 25)) ('responsible', 'Reg', (74, 85)) ('PA', 'Phenotype', 'HP:0011736', (116, 118)) ('pre-eclampsia', 'Phenotype', 'HP:0100602', (90, 103)) ('eclampsia', 'Phenotype', 'HP:0100601', (94, 103)) ('eclampsia', 'Disease', 'MESH:D004461', (94, 103)) ('eclampsia', 'Disease', (94, 103)) ('variants', 'Var', (26, 34)) 23449 32561571 Sometimes, even the diagnoses have been achieved, genetic testing is still recommended for disease classification and targeted treatment because the hereditary pattern, complicated diseases, growth characteristics and malignancy of monogenic hypertension are largely determined by gene mutation. ('hypertension', 'Disease', (242, 254)) ('hypertension', 'Phenotype', 'HP:0000822', (242, 254)) ('gene mutation', 'Var', (281, 294)) ('hypertension', 'Disease', 'MESH:D006973', (242, 254)) ('malignancy', 'Disease', 'MESH:D009369', (218, 228)) ('malignancy', 'Disease', (218, 228)) ('determined by', 'Reg', (267, 280)) 23451 32561571 It is not rare to see hypertensive individuals with hypokalemia and adrenal imaging abnormalities have critical ARR values or confirmatory test results. ('hypertensive', 'Disease', (22, 34)) ('adrenal imaging abnormalities', 'Phenotype', 'HP:0000834', (68, 97)) ('hypokalemia', 'Phenotype', 'HP:0002900', (52, 63)) ('abnormalities', 'Var', (84, 97)) ('hypokalemia', 'Disease', 'MESH:D007008', (52, 63)) ('adrenal', 'Gene', (68, 75)) ('hypertensive', 'Disease', 'MESH:D006973', (22, 34)) ('hypokalemia', 'Disease', (52, 63)) 23457 32561571 Among the 523 individuals with no variant, 83 (15.87%) were suspected to have specific forms of monogenic hypertension. ('hypertension', 'Phenotype', 'HP:0000822', (106, 118)) ('hypertension', 'Disease', 'MESH:D006973', (106, 118)) ('hypertension', 'Disease', (106, 118)) ('variant', 'Var', (34, 41)) 23458 32561571 Targeted sequencing combined with gene product expression analyses uncovered a number of disease causing variants and potential functional variants that were newly associated with monogenic hypertension. ('hypertension', 'Disease', (190, 202)) ('hypertension', 'Phenotype', 'HP:0000822', (190, 202)) ('associated', 'Reg', (164, 174)) ('variants', 'Var', (105, 113)) ('variants', 'Var', (139, 147)) ('hypertension', 'Disease', 'MESH:D006973', (190, 202)) 23460 32561571 However, for the three genes that do not lead to completely abolished expression of mutant proteins (NOS3, KCNJ5 and SDHC), dose-dependent effects were observed in animal models through in vivo and in vitro experiments. ('KCNJ5', 'Gene', (107, 112)) ('NOS3', 'Gene', (101, 105)) ('KCNJ5', 'Gene', '3762', (107, 112)) ('SDHC', 'Gene', (117, 121)) ('mutant', 'Var', (84, 90)) ('effects', 'Reg', (139, 146)) ('SDHC', 'Gene', '6391', (117, 121)) ('NOS3', 'Gene', '4846', (101, 105)) 23461 32561571 Blended phenotypes resulting from multilocus variants can be mistaken for new disorders or newly identified phenotypes of known disorders. ('new disorders', 'Disease', (74, 87)) ('multilocus', 'Var', (34, 44)) ('new disorders', 'Disease', 'MESH:C000657245', (74, 87)) 23462 32561571 The identification of multiple locus variants provided useful information on the patients' diagnoses and treatments since therapeutic strategy merely targets a single disorder were not sufficient to control the symptoms resulted from multiple genetic disorder. ('variants', 'Var', (37, 45)) ('patients', 'Species', '9606', (81, 89)) ('multiple genetic disorder', 'Disease', 'MESH:D030342', (234, 259)) ('multiple genetic disorder', 'Disease', (234, 259)) 23464 32561571 Most of the pathogenic or potential disease causing mutations were found in CACNA1H and CACNA1D genes. ('mutations', 'Var', (52, 61)) ('disease causing', 'Reg', (36, 51)) ('pathogenic', 'Reg', (12, 22)) ('CACNA1D', 'Gene', '776', (88, 95)) ('CACNA1H', 'Gene', (76, 83)) ('CACNA1D', 'Gene', (88, 95)) ('CACNA1H', 'Gene', '8912', (76, 83)) 23466 32561571 Approximately 40% of PPGL cases carry a germline mutation in one of 12 known causative genes. ('PPGL', 'Chemical', '-', (21, 25)) ('germline mutation', 'Var', (40, 57)) ('PPGL', 'Gene', (21, 25)) 23467 32561571 Similarly, in this study, 76 individuals were included for suspicion of having PPGL and PPGL variants were identified from 24 of them (31.58%). ('PPGL', 'Chemical', '-', (88, 92)) ('PPGL', 'Gene', (88, 92)) ('variants', 'Var', (93, 101)) ('PPGL', 'Chemical', '-', (79, 83)) ('PPGL', 'Gene', (79, 83)) 23469 32561571 Our results generally showed a similar pattern, with causative variants being most frequently clustered in RET, VHL, SDHB and NF1, suggesting the necessity for screening these frequently mutated genes in clinical settings. ('SDHB', 'Gene', (117, 121)) ('variants', 'Var', (63, 71)) ('RET', 'Gene', '5979', (107, 110)) ('VHL', 'Gene', (112, 115)) ('NF1', 'Gene', (126, 129)) ('VHL', 'Gene', '7428', (112, 115)) ('NF1', 'Gene', '4763', (126, 129)) ('RET', 'Gene', (107, 110)) ('SDHB', 'Gene', '6390', (117, 121)) 23472 32561571 Since the codon 918 mutations in family one has been implicated to have high penetrance of pheochromocytoma and medullary thyroid carcinoma, children who harbour this mutation have been recommended to have more aggressive treatment regimens. ('codon 918 mutations', 'Var', (10, 29)) ('pheochromocytoma', 'Disease', (91, 107)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (112, 139)) ('children', 'Species', '9606', (141, 149)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (122, 139)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (91, 107)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (91, 107)) ('carcinoma', 'Phenotype', 'HP:0030731', (130, 139)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (122, 139)) ('thyroid carcinoma', 'Disease', (122, 139)) 23474 32561571 In our study, there were two pre-eclampsia probands which had several family members who harbour CACNA1D variants and presented with either pre-eclampsia or early onset hypertension. ('pre-eclampsia', 'Phenotype', 'HP:0100602', (140, 153)) ('hypertension', 'Disease', (169, 181)) ('CACNA1D', 'Gene', (97, 104)) ('eclampsia', 'Disease', 'MESH:D004461', (144, 153)) ('hypertension', 'Phenotype', 'HP:0000822', (169, 181)) ('CACNA1D', 'Gene', '776', (97, 104)) ('eclampsia', 'Phenotype', 'HP:0100601', (144, 153)) ('eclampsia', 'Disease', (144, 153)) ('variants', 'Var', (105, 113)) ('hypertension', 'Disease', 'MESH:D006973', (169, 181)) ('pre-eclampsia', 'Phenotype', 'HP:0100602', (29, 42)) ('eclampsia', 'Phenotype', 'HP:0100601', (33, 42)) ('eclampsia', 'Disease', 'MESH:D004461', (33, 42)) ('eclampsia', 'Disease', (33, 42)) 23475 32561571 CACNA1D variants have been well documented to cause PA; however, no evidence implicates the direct correlation between CACNA1D and pre-eclampsia. ('PA', 'Disease', (52, 54)) ('variants', 'Var', (8, 16)) ('CACNA1D', 'Gene', '776', (119, 126)) ('CACNA1D', 'Gene', (119, 126)) ('CACNA1D', 'Gene', (0, 7)) ('eclampsia', 'Phenotype', 'HP:0100601', (135, 144)) ('cause', 'Reg', (46, 51)) ('CACNA1D', 'Gene', '776', (0, 7)) ('pre-eclampsia', 'Phenotype', 'HP:0100602', (131, 144)) ('PA', 'Phenotype', 'HP:0011736', (52, 54)) ('eclampsia', 'Disease', 'MESH:D004461', (135, 144)) ('eclampsia', 'Disease', (135, 144)) 23478 32561571 Thus, our study reports for the first time that CACNA1D mutations may cause pre-eclampsia. ('mutations', 'Var', (56, 65)) ('CACNA1D', 'Gene', (48, 55)) ('CACNA1D', 'Gene', '776', (48, 55)) ('pre-eclampsia', 'Phenotype', 'HP:0100602', (76, 89)) ('cause', 'Reg', (70, 75)) ('eclampsia', 'Disease', 'MESH:D004461', (80, 89)) ('eclampsia', 'Phenotype', 'HP:0100601', (80, 89)) ('eclampsia', 'Disease', (80, 89)) 23502 32151355 Additional immunohistochemical support for a diagnosis of poorly differentiated neuroendocrine carcinoma in this setting would include dot-like/perinuclear keratin positivity, thyroid transcription factor 1 (TTF-1) positivity (80%-90% of small cell lung cancers; 40% of extrapulmonary visceral poorly differentiated neuroendocrine carcinomas), and Rb loss (90% of small cell lung cancers; 50% of extrapulmonary visceral neuroendocrine carcinomas). ('neuroendocrine carcinomas', 'Disease', 'MESH:D018278', (420, 445)) ('small cell lung cancers', 'Disease', 'MESH:D055752', (364, 387)) ('visceral neuroendocrine carcinomas', 'Disease', 'MESH:D018278', (411, 445)) ('extrapulmonary', 'Disease', (396, 410)) ('lung cancer', 'Phenotype', 'HP:0100526', (375, 386)) ('small cell lung cancers', 'Phenotype', 'HP:0030357', (364, 387)) ('small cell lung cancers', 'Disease', (364, 387)) ('Rb loss', 'Disease', (348, 355)) ('lung cancer', 'Phenotype', 'HP:0100526', (249, 260)) ('cancer', 'Phenotype', 'HP:0002664', (254, 260)) ('neuroendocrine carcinomas', 'Disease', 'MESH:D018278', (316, 341)) ('positivity', 'Var', (164, 174)) ('cancers', 'Phenotype', 'HP:0002664', (380, 387)) ('lung cancers', 'Phenotype', 'HP:0100526', (249, 261)) ('neuroendocrine carcinoma', 'Disease', (80, 104)) ('carcinoma', 'Phenotype', 'HP:0030731', (95, 104)) ('cancers', 'Phenotype', 'HP:0002664', (254, 261)) ('cancer', 'Phenotype', 'HP:0002664', (380, 386)) ('lung cancers', 'Phenotype', 'HP:0100526', (375, 387)) ('carcinoma', 'Phenotype', 'HP:0030731', (331, 340)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (238, 260)) ('neuroendocrine carcinomas', 'Phenotype', 'HP:0100634', (420, 445)) ('carcinoma', 'Phenotype', 'HP:0030731', (435, 444)) ('Rb loss', 'Disease', 'MESH:D014786', (348, 355)) ('small cell lung cancers', 'Disease', 'MESH:D055752', (238, 261)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (364, 386)) ('carcinomas', 'Phenotype', 'HP:0030731', (435, 445)) ('neuroendocrine carcinoma', 'Disease', 'MESH:D018278', (316, 340)) ('small cell lung cancers', 'Phenotype', 'HP:0030357', (238, 261)) ('small cell lung cancers', 'Disease', (238, 261)) ('thyroid transcription factor 1', 'Gene', (176, 206)) ('visceral neuroendocrine carcinomas', 'Disease', (411, 445)) ('neuroendocrine carcinoma', 'Phenotype', 'HP:0100634', (316, 340)) ('neuroendocrine carcinomas', 'Phenotype', 'HP:0100634', (316, 341)) ('neuroendocrine carcinomas', 'Disease', (316, 341)) ('neuroendocrine carcinoma', 'Disease', 'MESH:D018278', (80, 104)) ('neuroendocrine carcinoma', 'Disease', 'MESH:D018278', (420, 444)) ('TTF-1', 'Gene', (208, 213)) ('carcinomas', 'Phenotype', 'HP:0030731', (331, 341)) ('neuroendocrine carcinoma', 'Phenotype', 'HP:0100634', (420, 444)) ('neuroendocrine carcinoma', 'Phenotype', 'HP:0100634', (80, 104)) ('thyroid transcription factor 1', 'Gene', '7080', (176, 206)) ('positivity', 'Var', (215, 225)) 23505 32151355 It was introduced to the diagnostic pathology community by Rosenbaum and colleagues in 2015, who demonstrated INSM1 positivity in 88% of 129 neuroendocrine neoplasms from diverse anatomic sites and only 1 of 24 nonneuroendocrine tumors. ('positivity', 'Var', (116, 126)) ('neuroendocrine neoplasms', 'Disease', (141, 165)) ('neuroendocrine neoplasms', 'Phenotype', 'HP:0100634', (141, 165)) ('tumor', 'Phenotype', 'HP:0002664', (229, 234)) ('INSM1', 'Gene', '3642', (110, 115)) ('neoplasm', 'Phenotype', 'HP:0002664', (156, 164)) ('nonneuroendocrine tumors', 'Disease', 'MESH:D009369', (211, 235)) ('neuroendocrine neoplasms', 'Disease', 'MESH:D018358', (141, 165)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (214, 234)) ('INSM1', 'Gene', (110, 115)) ('neuroendocrine neoplasm', 'Phenotype', 'HP:0100634', (141, 164)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (214, 235)) ('tumors', 'Phenotype', 'HP:0002664', (229, 235)) ('neoplasms', 'Phenotype', 'HP:0002664', (156, 165)) ('nonneuroendocrine tumors', 'Disease', (211, 235)) 23508 32151355 For example, Rooper and colleagues reported INSM1 positivity in 95% of 39 small cell lung cancers with an average H-score of 154 (note: H-score is the product of intensity*percent cells staining and ranges from 0 to 300), while synaptophysin and chromogranin A were positive in only 62% (average H-score 60) and 49% (average H-score 85), respectively. ('synaptophysin', 'Gene', (228, 241)) ('INSM1', 'Gene', (44, 49)) ('lung cancer', 'Phenotype', 'HP:0100526', (85, 96)) ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('small cell lung cancers', 'Disease', (74, 97)) ('small cell lung cancers', 'Disease', 'MESH:D055752', (74, 97)) ('chromogranin A', 'Gene', '1113', (246, 260)) ('small cell lung cancers', 'Phenotype', 'HP:0030357', (74, 97)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (74, 96)) ('synaptophysin', 'Gene', '6855', (228, 241)) ('lung cancers', 'Phenotype', 'HP:0100526', (85, 97)) ('chromogranin A', 'Gene', (246, 260)) ('cancers', 'Phenotype', 'HP:0002664', (90, 97)) ('positivity', 'Var', (50, 60)) ('INSM1', 'Gene', '3642', (44, 49)) 23517 32151355 Succinate dehydrogenase subunit B (SDHB) immunohistochemistry is highly recommended in pheochromocytoma/paraganglioma to screen for SDH deficiency due to inactivation of any SDH subunit, with SDHB loss (seen in 30% of thoracoabdominal and >=15% of head and neck paragangliomas and 5% of pheochromocytomas) suggesting the possibility of a hereditary tumor (ie, hereditary paraganglioma-pheochromocytoma syndrome, Carney-Stratakis syndrome) and associated with adverse prognosis (Fig. ('pheochromocytomas', 'Disease', (287, 304)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (87, 103)) ('hereditary tumor', 'Disease', 'MESH:D030342', (338, 354)) ('SDHB', 'Gene', (35, 39)) ('paraganglioma', 'Phenotype', 'HP:0002668', (262, 275)) ('paragangliomas', 'Phenotype', 'HP:0002668', (262, 276)) ('neck paragangliomas', 'Disease', (257, 276)) ('paraganglioma', 'Phenotype', 'HP:0002668', (104, 117)) ('SDH', 'Gene', (35, 38)) ('hereditary tumor', 'Disease', (338, 354)) ('tumor', 'Phenotype', 'HP:0002664', (349, 354)) ('hereditary paraganglioma-pheochromocytoma syndrome', 'Disease', 'MESH:D010673', (360, 410)) ('SDH', 'Gene', '6390', (174, 177)) ('SDH deficiency', 'Disease', (132, 146)) ('paraganglioma', 'Phenotype', 'HP:0002668', (371, 384)) ('SDH', 'Gene', (192, 195)) ('pheochromocytoma/paraganglioma', 'Disease', (87, 117)) ('SDH deficiency', 'Disease', 'MESH:D007153', (132, 146)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (287, 304)) ('Succinate dehydrogenase subunit B', 'Gene', '6390', (0, 33)) ('hereditary paraganglioma-pheochromocytoma syndrome', 'Disease', (360, 410)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (385, 401)) ('Carney-Stratakis syndrome', 'Disease', (412, 437)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (257, 276)) ('SDH', 'Gene', (174, 177)) ('inactivation', 'Var', (154, 166)) ('SDHB', 'Gene', '6390', (192, 196)) ('SDHB loss', 'Disease', 'MESH:D014786', (192, 201)) ('SDH', 'Gene', '6390', (132, 135)) ('Succinate dehydrogenase subunit B', 'Gene', (0, 33)) ('SDHB loss', 'Disease', (192, 201)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (87, 117)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (257, 276)) ('SDH', 'Gene', '6390', (192, 195)) ('SDHB', 'Gene', '6390', (35, 39)) ('SDH', 'Gene', '6390', (35, 38)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (287, 303)) ('SDHB', 'Gene', (192, 196)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (412, 437)) ('SDH', 'Gene', (132, 135)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (287, 304)) 23576 32151355 The poorly differentiated neuroendocrine carcinoma types are analogous, although the mitotic threshold is lower in the lung (>10 per 2 mm2) than in the GI tract (>20 per 10 HPF). ('carcinoma', 'Phenotype', 'HP:0030731', (41, 50)) ('lower', 'NegReg', (106, 111)) ('>10', 'Var', (125, 128)) ('neuroendocrine carcinoma', 'Disease', 'MESH:D018278', (26, 50)) ('GI', 'Gene', '2770', (152, 154)) ('neuroendocrine carcinoma', 'Disease', (26, 50)) ('neuroendocrine carcinoma', 'Phenotype', 'HP:0100634', (26, 50)) ('mitotic threshold', 'MPA', (85, 102)) 23622 32151355 SATB2, which is typically used in diagnostic pathology as a marker of adenocarcinoma of lower GI origin, has emerged as the preferred marker of lower GI well-differentiated neuroendocrine tumors; I recently found moderate-tostrong expression in 92% of 25 rectosigmoid, 55% of 33 appendical, and 0% of 331 other well-differentiated neuroendocrine neoplasms from diverse anatomic sites. ('moderate-tostrong', 'Var', (213, 230)) ('neoplasms', 'Phenotype', 'HP:0002664', (346, 355)) ('appendical', 'Disease', (279, 289)) ('adenocarcinoma', 'Disease', (70, 84)) ('GI', 'Gene', '2770', (150, 152)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (173, 194)) ('neoplasm', 'Phenotype', 'HP:0002664', (346, 354)) ('neuroendocrine neoplasm', 'Phenotype', 'HP:0100634', (331, 354)) ('tumors', 'Phenotype', 'HP:0002664', (188, 194)) ('GI', 'Gene', '2770', (94, 96)) ('SATB2', 'Gene', (0, 5)) ('SATB2', 'Gene', '23314', (0, 5)) ('tumor', 'Phenotype', 'HP:0002664', (188, 193)) ('adenocarcinoma', 'Disease', 'MESH:D000230', (70, 84)) ('neuroendocrine neoplasms', 'Disease', 'MESH:D018358', (331, 355)) ('neuroendocrine tumors', 'Disease', (173, 194)) ('rectosigmoid', 'Disease', (255, 267)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (173, 193)) ('neuroendocrine neoplasms', 'Disease', (331, 355)) ('neuroendocrine neoplasms', 'Phenotype', 'HP:0100634', (331, 355)) ('carcinoma', 'Phenotype', 'HP:0030731', (75, 84)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (173, 194)) 23628 32151355 Frequent ATRX inactivation (10%-20%) was noted in recent studies defining the molecular genetic landscape of pancreatic neuroendocrine tumors and not in jejunoileal or bronchopulmonary tumors. ('ATRX', 'Gene', '546', (9, 13)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (120, 141)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('bronchopulmonary tumors', 'Disease', 'MESH:D001997', (168, 191)) ('bronchopulmonary tumors', 'Disease', (168, 191)) ('tumors', 'Phenotype', 'HP:0002664', (185, 191)) ('inactivation', 'Var', (14, 26)) ('pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (109, 141)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('pancreatic neuroendocrine tumors', 'Disease', (109, 141)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('ATRX', 'Gene', (9, 13)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (120, 140)) 23630 32151355 Of note, inactivation was also recently found in 3% of 103 pheochromocytomas/paragangliomas. ('paraganglioma', 'Phenotype', 'HP:0002668', (77, 90)) ('pheochromocytomas/paragangliomas', 'Disease', (59, 91)) ('inactivation', 'Var', (9, 21)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (59, 76)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (59, 91)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (59, 75)) ('paragangliomas', 'Phenotype', 'HP:0002668', (77, 91)) 23632 32151355 I found clusterin positivity in 82% of 148 nonjejunoileal tumors (average H-score 183) and only 8% of 107 jejunoileal tumors (average H-score 31). ('tumor', 'Phenotype', 'HP:0002664', (58, 63)) ('jejunoileal tumors', 'Disease', 'MESH:D009369', (46, 64)) ('jejunoileal tumors', 'Disease', 'MESH:D009369', (106, 124)) ('tumors', 'Phenotype', 'HP:0002664', (58, 64)) ('clusterin', 'Gene', (8, 17)) ('clusterin', 'Gene', '1191', (8, 17)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('jejunoileal tumors', 'Disease', (46, 64)) ('tumors', 'Phenotype', 'HP:0002664', (118, 124)) ('positivity', 'Var', (18, 28)) ('jejunoileal tumors', 'Disease', (106, 124)) 23641 32151355 As a note of caution, many pathology laboratories have shifted to performing monoclonal PAX8 immunohistochemistry (a fact your pathologist may be unaware of), which is negative in pancreatic well-differentiated neuroendocrine tumors. ('tumors', 'Phenotype', 'HP:0002664', (226, 232)) ('PAX8', 'Gene', (88, 92)) ('monoclonal', 'Var', (77, 87)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (211, 231)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (211, 232)) ('tumor', 'Phenotype', 'HP:0002664', (226, 231)) ('PAX8', 'Gene', '7849', (88, 92)) ('pancreatic well-differentiated neuroendocrine tumors', 'Disease', 'MESH:D018358', (180, 232)) 23646 32151355 Up to 80% of Merkel cell carcinomas are driven by a polyomavirus (ie, Merkel cell polyomavirus), and I was initially excited about immunohistochemistry to the virus's large T antigen (clone CM2B4) to increase the accuracy of the TTF-1/CK20 classifier. ('polyomavirus', 'Var', (52, 64)) ('Merkel cell carcinoma', 'Disease', 'MESH:D015266', (13, 34)) ('carcinomas', 'Disease', (25, 35)) ('Merkel cell polyomavirus', 'Species', '493803', (70, 94)) ('Merkel cell carcinoma', 'Disease', (13, 34)) ('polyomavirus', 'Species', '36362', (52, 64)) ('CK20', 'Gene', (235, 239)) ('CK20', 'Gene', '54474', (235, 239)) ('carcinomas', 'Phenotype', 'HP:0030731', (25, 35)) ('polyomavirus', 'Species', '36362', (82, 94)) ('carcinoma', 'Phenotype', 'HP:0030731', (25, 34)) ('driven by', 'Reg', (40, 49)) ('carcinomas', 'Disease', 'MESH:D009369', (25, 35)) 23648 32151355 The immunostain is useful, though, in distinguishing Merkel cell carcinoma (CM2B4+) from poorly differentiated neuroendocrine carcinoma of major salivary gland origin (CM2B4-). ('carcinoma', 'Phenotype', 'HP:0030731', (65, 74)) ('Merkel cell carcinoma', 'Disease', 'MESH:D015266', (53, 74)) ('neuroendocrine carcinoma', 'Disease', 'MESH:D018278', (111, 135)) ('Merkel cell carcinoma', 'Disease', (53, 74)) ('CM2B4+', 'Var', (76, 82)) ('neuroendocrine carcinoma', 'Disease', (111, 135)) ('neuroendocrine carcinoma', 'Phenotype', 'HP:0100634', (111, 135)) ('carcinoma', 'Phenotype', 'HP:0030731', (126, 135)) 23653 32151355 The molecular genetic hallmark of small cell lung cancer is biallelic inactivation of TP53 and RB1. ('TP53', 'Gene', '7157', (86, 90)) ('RB1', 'Gene', (95, 98)) ('TP53', 'Gene', (86, 90)) ('lung cancer', 'Phenotype', 'HP:0100526', (45, 56)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (34, 56)) ('cancer', 'Phenotype', 'HP:0002664', (50, 56)) ('hallmark of small cell lung cancer', 'Disease', 'MESH:D055752', (22, 56)) ('RB1', 'Gene', '5925', (95, 98)) ('hallmark of small cell lung cancer', 'Disease', (22, 56)) ('biallelic inactivation', 'Var', (60, 82)) 23656 32151355 I recently found mutant-pattern p53 staining (missense or null patterns) in 71% of 31 small cell lung and 76% of extrapulmonary visceral, Rb loss in 85% of small cell lung and 52% of extrapulmonary visceral, and mutant-patten p53 and/or Rb loss in 97% and 81% of small cell lung cancers and extrapulmonary visceral poorly differentiated neuroendocrine carcinomas, respectively. ('lung cancer', 'Phenotype', 'HP:0100526', (274, 285)) ('neuroendocrine carcinomas', 'Disease', (337, 362)) ('Rb loss', 'Disease', (237, 244)) ('lung cancers', 'Phenotype', 'HP:0100526', (274, 286)) ('neuroendocrine carcinomas', 'Phenotype', 'HP:0100634', (337, 362)) ('carcinoma', 'Phenotype', 'HP:0030731', (352, 361)) ('carcinomas', 'Phenotype', 'HP:0030731', (352, 362)) ('p53', 'Gene', '7157', (32, 35)) ('Rb loss', 'Disease', 'MESH:D014786', (138, 145)) ('cancers', 'Phenotype', 'HP:0002664', (279, 286)) ('mutant-pattern', 'Var', (17, 31)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (263, 285)) ('cancer', 'Phenotype', 'HP:0002664', (279, 285)) ('p53', 'Gene', (32, 35)) ('neuroendocrine carcinoma', 'Phenotype', 'HP:0100634', (337, 361)) ('mutant-patten', 'Var', (212, 225)) ('neuroendocrine carcinomas', 'Disease', 'MESH:D018278', (337, 362)) ('small cell lung cancers', 'Disease', (263, 286)) ('small cell lung cancers', 'Disease', 'MESH:D055752', (263, 286)) ('small cell lung cancers', 'Phenotype', 'HP:0030357', (263, 286)) ('Rb loss', 'Disease', 'MESH:D014786', (237, 244)) ('small cell lung', 'Disease', (86, 101)) ('Rb loss', 'Disease', (138, 145)) ('p53', 'Gene', '7157', (226, 229)) ('p53', 'Gene', (226, 229)) 23671 32151355 Immunohistochemistry is useful for determining the site of origin of metastatic well-differentiated neuroendocrine tumor of occult origin, most of which arise from the jejunoileum (CDX2+) or pancreas (islet 1+), and for distinguishing morphologically ambiguous well-differentiated neuroendocrine tumor G3 (p53 wild-type pattern, Rb intact) from large cell neuroendocrine carcinoma (p53 mutant pattern and/or Rb lost). ('neuroendocrine carcinoma', 'Phenotype', 'HP:0100634', (356, 380)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (100, 120)) ('p53', 'Gene', (306, 309)) ('p53', 'Gene', '7157', (382, 385)) ('neuroendocrine tumor', 'Disease', 'MESH:D018358', (100, 120)) ('p53', 'Gene', (382, 385)) ('neuroendocrine tumor', 'Disease', (281, 301)) ('carcinoma', 'Phenotype', 'HP:0030731', (371, 380)) ('large cell neuroendocrine carcinoma', 'Phenotype', 'HP:0030360', (345, 380)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (281, 301)) ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('cell neuroendocrine carcinoma', 'Disease', 'MESH:D018278', (351, 380)) ('mutant pattern', 'Var', (386, 400)) ('CDX2', 'Gene', '1045', (181, 185)) ('islet 1', 'Gene', '3670', (201, 208)) ('neuroendocrine tumor', 'Disease', 'MESH:D018358', (281, 301)) ('tumor', 'Phenotype', 'HP:0002664', (296, 301)) ('cell neuroendocrine carcinoma', 'Disease', (351, 380)) ('p53', 'Gene', '7157', (306, 309)) ('CDX2', 'Gene', (181, 185)) ('neuroendocrine tumor', 'Disease', (100, 120)) ('islet 1', 'Gene', (201, 208)) 23673 30880007 Here we employed a computational approach to uncover mechanisms underlying cancer mutational burden by focusing upon relationships between 1) translocation breakpoints and the thousands of G4 DNA-forming sequences within retrotransposons impacting transcription and exemplifying probable non-B DNA structures and 2) transcriptome profiling and cancer mutations. ('cancer', 'Disease', (344, 350)) ('cancer', 'Disease', 'MESH:D009369', (75, 81)) ('transcription', 'MPA', (248, 261)) ('cancer', 'Disease', (75, 81)) ('cancer', 'Disease', 'MESH:D009369', (344, 350)) ('sequences', 'Var', (204, 213)) ('cancer', 'Phenotype', 'HP:0002664', (344, 350)) ('cancer', 'Phenotype', 'HP:0002664', (75, 81)) ('transposons', 'Species', '2387', (226, 237)) ('impacting', 'Reg', (238, 247)) 23675 30880007 By analyzing >97,000 unique translocation breakpoints from the Catalogue Of Somatic Mutations In Cancer (COSMIC), we found that breakpoints are overrepresented at G4 DNA-forming sequences within hominid-specific SVA retrotransposons, and generally occur in tumors with mutations in tumor suppressor genes, such as TP53. ('Cancer', 'Disease', 'MESH:D009369', (97, 103)) ('tumor', 'Phenotype', 'HP:0002664', (282, 287)) ('tumor', 'Disease', (257, 262)) ('mutations', 'Var', (269, 278)) ('Mutations', 'Var', (84, 93)) ('occur', 'Reg', (248, 253)) ('tumors', 'Disease', (257, 263)) ('tumors', 'Disease', 'MESH:D009369', (257, 263)) ('tumor', 'Disease', (282, 287)) ('TP53', 'Gene', '7157', (314, 318)) ('tumors', 'Phenotype', 'HP:0002664', (257, 263)) ('transposons', 'Species', '2387', (221, 232)) ('TP53', 'Gene', (314, 318)) ('tumor', 'Disease', 'MESH:D009369', (257, 262)) ('Cancer', 'Phenotype', 'HP:0002664', (97, 103)) ('Cancer', 'Disease', (97, 103)) ('tumor', 'Phenotype', 'HP:0002664', (257, 262)) ('tumor', 'Disease', 'MESH:D009369', (282, 287)) 23678 30880007 Thus, correlation analyses of DNA structure and gene expression with mutation loads complement and extend more traditional approaches to elucidate processes shaping genomic instability in cancer. ('cancer', 'Disease', 'MESH:D009369', (188, 194)) ('cancer', 'Phenotype', 'HP:0002664', (188, 194)) ('mutation loads', 'Var', (69, 83)) ('cancer', 'Disease', (188, 194)) 23680 30880007 Genomic instability, increased proliferation and escape from apoptosis are hallmarks of cancer. ('increased', 'PosReg', (21, 30)) ('cancer', 'Disease', (88, 94)) ('cancer', 'Disease', 'MESH:D009369', (88, 94)) ('proliferation', 'CPA', (31, 44)) ('escape', 'CPA', (49, 55)) ('cancer', 'Phenotype', 'HP:0002664', (88, 94)) ('Genomic', 'Var', (0, 7)) 23681 30880007 A recent survey of >11000 tumor samples identified ~300 genes (cancer-driver genes) whose somatic mutations in terms of base substitutions are directly linked to malignancy. ('malignancy', 'Disease', 'MESH:D009369', (162, 172)) ('cancer', 'Phenotype', 'HP:0002664', (63, 69)) ('tumor', 'Disease', 'MESH:D009369', (26, 31)) ('linked', 'Reg', (152, 158)) ('base substitutions', 'Var', (120, 138)) ('malignancy', 'Disease', (162, 172)) ('cancer', 'Disease', 'MESH:D009369', (63, 69)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('tumor', 'Disease', (26, 31)) ('cancer', 'Disease', (63, 69)) 23682 30880007 Another ~1100 genes may support tumorigenesis through alterations in their expression profiles as a consequence of copy-number alterations, gene fusions, and other types of genomic rearrangements. ('gene fusions', 'Var', (140, 152)) ('tumor', 'Disease', 'MESH:D009369', (32, 37)) ('expression profiles', 'MPA', (75, 94)) ('alterations', 'Reg', (54, 65)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('tumor', 'Disease', (32, 37)) ('copy-number alterations', 'Var', (115, 138)) ('support', 'PosReg', (24, 31)) 23686 30880007 Such genomic alterations are seen not only in adult but also in pediatric tumors, implicating DNA mutations and epigenetic changes in steering a normal cell into a malignant phenotype. ('epigenetic changes', 'Var', (112, 130)) ('DNA', 'Gene', (94, 97)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('mutations', 'Var', (98, 107)) ('tumors', 'Phenotype', 'HP:0002664', (74, 80)) ('tumors', 'Disease', 'MESH:D009369', (74, 80)) ('steering', 'PosReg', (134, 142)) ('tumors', 'Disease', (74, 80)) 23687 30880007 Somatic mutations in driver genes are often instigated by predisposing germline variants, such as in BRCA1 and BRCA2, and impinge on 8 major cellular processes, with alterations in genes involved in maintaining genome integrity, such as the Fanconi anemia pathway, and in 10 signaling pathways (RTK/RAS, Nrf2, PI3K, TGFbeta, Wnt, Myc, TP53, cell cycle, Hippo, Notch) as being among the most commonly altered. ('alterations', 'Reg', (166, 177)) ('TGFbeta', 'Gene', (316, 323)) ('Fanconi anemia', 'Phenotype', 'HP:0001994', (241, 255)) ('impinge', 'Reg', (122, 129)) ('TP53', 'Gene', '7157', (335, 339)) ('BRCA2', 'Gene', (111, 116)) ('TGFbeta', 'Gene', '7039', (316, 323)) ('Nrf2', 'Gene', (304, 308)) ('Myc', 'Gene', (330, 333)) ('mutations', 'Var', (8, 17)) ('cell cycle', 'CPA', (341, 351)) ('BRCA2', 'Gene', '675', (111, 116)) ('signaling pathways', 'Pathway', (275, 293)) ('variants', 'Var', (80, 88)) ('Fanconi anemia', 'Disease', (241, 255)) ('anemia', 'Phenotype', 'HP:0001903', (249, 255)) ('TP53', 'Gene', (335, 339)) ('BRCA1', 'Gene', '672', (101, 106)) ('Fanconi anemia', 'Disease', 'MESH:D005199', (241, 255)) ('Myc', 'Gene', '4609', (330, 333)) ('altered', 'Reg', (400, 407)) ('BRCA1', 'Gene', (101, 106)) ('Nrf2', 'Gene', '4780', (304, 308)) 23689 30880007 By extracting patterns of base changes in cancer genomes, ~30 distinct signatures have been catalogued, which inform on molecular processes likely to lead to mutations from either extrinsic (ultraviolet light, smoking, chemicals) or intrinsic (APOBEC misediting, DNA repair deficiencies, defective polymerase epsilon) sources. ('mutations', 'Var', (158, 167)) ('cancer', 'Disease', (42, 48)) ('cancer', 'Disease', 'MESH:D009369', (42, 48)) ('cancer', 'Phenotype', 'HP:0002664', (42, 48)) 23690 30880007 Patterns of base substitutions have also been associated with direct damage to DNA bases by oxidants, such as reactive oxygen and nitrogen species (ROS and RNS respectively), which rise in tumor cells following glucose deprivation, deregulation of the mitochondrial electron transport chain and other organelles (endoplasmic reticulum, lysosomes and peroxisomes). ('rise', 'PosReg', (181, 185)) ('deregulation', 'Reg', (232, 244)) ('base substitutions', 'Var', (12, 30)) ('tumor', 'Disease', (189, 194)) ('glucose', 'Chemical', 'MESH:D005947', (211, 218)) ('nitrogen', 'Chemical', 'MESH:D009584', (130, 138)) ('RNS', 'Chemical', 'MESH:D011886', (156, 159)) ('mitochondrial', 'Enzyme', (252, 265)) ('ROS', 'Chemical', 'MESH:D017382', (148, 151)) ('tumor', 'Disease', 'MESH:D009369', (189, 194)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) 23691 30880007 This sustained proliferation contributes to a condition referred to as "replication stress", a potent inducer of genomic instability triggered by a buildup of ssDNA from RPA depletion, the accumulation of secondary DNA structures, R-loops, collisions between replication and transcription, and other factors. ('RPA', 'Gene', '6117', (170, 173)) ('collisions', 'Var', (240, 250)) ('R-loops', 'Var', (231, 238)) ('accumulation', 'PosReg', (189, 201)) ('stress', 'Disease', 'MESH:D000079225', (84, 90)) ('RPA', 'Gene', (170, 173)) ('secondary DNA structures', 'Protein', (205, 229)) ('stress', 'Disease', (84, 90)) 23696 30880007 Tumor samples with translocation breakpoints at G4 DNA-forming sequences are also more likely to carry mutations in TP53 and less likely to harbor pathologic mutations in KRAS and CTNNB1, supporting a role for TP53 mutations in G4 DNA-induced instability. ('TP53', 'Gene', (116, 120)) ('mutations', 'Var', (103, 112)) ('CTNNB1', 'Gene', '1499', (180, 186)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('TP53', 'Gene', (210, 214)) ('G4 DNA-forming', 'Var', (48, 62)) ('CTNNB1', 'Gene', (180, 186)) ('KRAS', 'Gene', (171, 175)) ('TP53', 'Gene', '7157', (116, 120)) ('KRAS', 'Gene', '3845', (171, 175)) ('TP53', 'Gene', '7157', (210, 214)) 23699 30880007 Thus, correlation analyses of G4 DNA structure and gene expression with mutation loads complement and extend more traditional approaches to elucidate sources of genomic instability in cancer. ('cancer', 'Disease', (184, 190)) ('cancer', 'Disease', 'MESH:D009369', (184, 190)) ('cancer', 'Phenotype', 'HP:0002664', (184, 190)) ('mutation loads', 'Var', (72, 86)) 23716 30880007 single base substitutions and small insertion/deletions in exons genome-wide specific to the tumor but not the matched normal samples. ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('tumor', 'Disease', (93, 98)) ('insertion/deletions', 'Var', (36, 55)) ('single base substitutions', 'Var', (0, 25)) ('tumor', 'Disease', 'MESH:D009369', (93, 98)) 23730 30880007 In conclusion, our analysis shows that translocation breakpoints in cancer occur at G4 DNA-forming repeats more often than expected by chance alone. ('cancer', 'Disease', 'MESH:D009369', (68, 74)) ('cancer', 'Phenotype', 'HP:0002664', (68, 74)) ('translocation breakpoints', 'Var', (39, 64)) ('cancer', 'Disease', (68, 74)) 23732 30880007 First, we assessed the genome-wide load of translocations in each patient; we found that the group of patients with G4-associated breakpoints carried more translocations than the group of patients without G4-associated breakpoints (57.9 +- 59.7 vs. 17.3 +- 20.7; Fig. ('G4-associated', 'Var', (116, 129)) ('breakpoints', 'Var', (130, 141)) ('patient', 'Species', '9606', (188, 195)) ('patient', 'Species', '9606', (102, 109)) ('patients', 'Species', '9606', (102, 110)) ('patient', 'Species', '9606', (66, 73)) ('patients', 'Species', '9606', (188, 196)) ('translocations', 'MPA', (155, 169)) 23733 30880007 Second, even though tumor samples with and without G4-associated breakpoints carried pathologic mutations in cancer-related genes, such as TP53, KRAS, PIK3CA, etc. ('cancer', 'Disease', 'MESH:D009369', (109, 115)) ('KRAS', 'Gene', (145, 149)) ('pathologic', 'Reg', (85, 95)) ('PIK3CA', 'Gene', (151, 157)) ('cancer', 'Disease', (109, 115)) ('TP53', 'Gene', '7157', (139, 143)) ('tumor', 'Disease', 'MESH:D009369', (20, 25)) ('KRAS', 'Gene', '3845', (145, 149)) ('PIK3CA', 'Gene', '5290', (151, 157)) ('tumor', 'Phenotype', 'HP:0002664', (20, 25)) ('TP53', 'Gene', (139, 143)) ('cancer', 'Phenotype', 'HP:0002664', (109, 115)) ('mutations', 'Var', (96, 105)) ('tumor', 'Disease', (20, 25)) 23734 30880007 (Figs 2C and D), samples with G4-containing breakpoints displayed a greater frequency of mutations at TP53, PTPRD and GATA3 than the alternate group. ('TP53', 'Gene', (102, 106)) ('GATA3', 'Gene', (118, 123)) ('PTPRD', 'Gene', '5789', (108, 113)) ('PTPRD', 'Gene', (108, 113)) ('mutations', 'Var', (89, 98)) ('GATA3', 'Gene', '2625', (118, 123)) ('TP53', 'Gene', '7157', (102, 106)) ('G4-containing', 'Var', (30, 43)) 23735 30880007 By contrast, the likelihood of harboring pathologic mutations at KRAS and CTNNB1 was significantly reduced (Fig. ('mutations', 'Var', (52, 61)) ('CTNNB1', 'Gene', (74, 80)) ('KRAS', 'Gene', '3845', (65, 69)) ('CTNNB1', 'Gene', '1499', (74, 80)) ('reduced', 'NegReg', (99, 106)) ('KRAS', 'Gene', (65, 69)) 23736 30880007 3E), in accordance with the expectation that mutations in the TP53, RTK/RAS and Wnt pathways are mutually exclusive. ('RTK/RAS', 'Pathway', (68, 75)) ('mutations', 'Var', (45, 54)) ('TP53', 'Gene', '7157', (62, 66)) ('TP53', 'Gene', (62, 66)) ('Wnt pathways', 'Pathway', (80, 92)) 23737 30880007 We conclude that strand breaks at or near G4 DNA-forming sequences occur generally in tumors with high genetic instability, which is promoted in part by mutations in tumor suppressor genes, such as TP53. ('tumor', 'Disease', 'MESH:D009369', (166, 171)) ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('tumor', 'Phenotype', 'HP:0002664', (166, 171)) ('mutations', 'Var', (153, 162)) ('strand', 'Var', (17, 23)) ('tumor', 'Disease', (86, 91)) ('tumor', 'Disease', (166, 171)) ('tumors', 'Disease', (86, 92)) ('tumors', 'Disease', 'MESH:D009369', (86, 92)) ('TP53', 'Gene', '7157', (198, 202)) ('tumors', 'Phenotype', 'HP:0002664', (86, 92)) ('TP53', 'Gene', (198, 202)) ('tumor', 'Disease', 'MESH:D009369', (86, 91)) 23746 30880007 In conclusion, translocation breakpoints are more likely to be found at G4 DNA located in SVA elements than in L1 transposons; furthermore, it is possible that a subset of SVA elements in the human genome might be particularly unstable, yielding recurrent strand breaks in cancer. ('cancer', 'Disease', (273, 279)) ('human', 'Species', '9606', (192, 197)) ('transposons', 'Species', '2387', (114, 125)) ('cancer', 'Disease', 'MESH:D009369', (273, 279)) ('yielding', 'Reg', (237, 245)) ('cancer', 'Phenotype', 'HP:0002664', (273, 279)) ('SVA', 'Gene', (172, 175)) ('elements', 'Var', (176, 184)) ('strand breaks', 'MPA', (256, 269)) ('recurrent strand breaks', 'Phenotype', 'HP:0040012', (246, 269)) 23747 30880007 Recognizing that G4 DNA likely impacts transcription, we employed a separate set of analyses to assess the extent to which the cellular transcriptome and its regulation are associated with mutation loads in cancer genomes. ('cancer', 'Disease', 'MESH:D009369', (207, 213)) ('cancer', 'Disease', (207, 213)) ('G4 DNA', 'Var', (17, 23)) ('mutation loads', 'Var', (189, 203)) ('cancer', 'Phenotype', 'HP:0002664', (207, 213)) ('associated', 'Reg', (173, 183)) ('impacts', 'Reg', (31, 38)) ('transcription', 'MPA', (39, 52)) 23749 30880007 Thus, an S-plot of all P-values allowed for a direct comparison across all tumors, which revealed a strong variability on tissue-dependent origin in the extent to which gene expression correlates with mutation loads. ('tumors', 'Disease', 'MESH:D009369', (75, 81)) ('tumors', 'Disease', (75, 81)) ('tumors', 'Phenotype', 'HP:0002664', (75, 81)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('mutation', 'Var', (201, 209)) ('gene expression', 'MPA', (169, 184)) 23757 30880007 Of the 10 top genes most negatively correlated with mutation loads, the strongest association was found for MLH1 in ESCA (Fig. ('ESCA', 'Disease', (116, 120)) ('MLH1', 'Gene', '4292', (108, 112)) ('MLH1', 'Gene', (108, 112)) ('mutation', 'Var', (52, 60)) 23758 30880007 Mutations in MLH1 or its low expression are known for their role in tumorigenesis, however none of the other 9 genes were listed in the COSMIC cancer gene census. ('tumor', 'Disease', (68, 73)) ('cancer', 'Phenotype', 'HP:0002664', (143, 149)) ('MLH1', 'Gene', (13, 17)) ('MLH1', 'Gene', '4292', (13, 17)) ('Mutations', 'Var', (0, 9)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('cancer', 'Disease', (143, 149)) ('cancer', 'Disease', 'MESH:D009369', (143, 149)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) 23761 30880007 In summary, the top genes most strongly correlated with mutations loads reveal strong associations between deregulation of gene expression and poor survival in cancer. ('mutations', 'Var', (56, 65)) ('cancer', 'Disease', 'MESH:D009369', (160, 166)) ('poor survival', 'CPA', (143, 156)) ('cancer', 'Disease', (160, 166)) ('deregulation', 'Var', (107, 119)) ('cancer', 'Phenotype', 'HP:0002664', (160, 166)) 23762 30880007 To further explore the involvement of the top genes correlated with mutations in tumorigenesis, we focused on two genes: MYBL2 for the positive correlations and SDHAF3 for the negative correlations. ('MYBL2', 'Gene', '4605', (121, 126)) ('SDHAF3', 'Gene', '57001', (161, 167)) ('MYBL2', 'Gene', (121, 126)) ('tumor', 'Disease', 'MESH:D009369', (81, 86)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('mutations', 'Var', (68, 77)) ('SDHAF3', 'Gene', (161, 167)) ('tumor', 'Disease', (81, 86)) 23768 30880007 Poor prognosis was associated with high MYBL2 expression in 11/32 tumors (Fig. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('tumors', 'Disease', (66, 72)) ('tumors', 'Disease', 'MESH:D009369', (66, 72)) ('tumors', 'Phenotype', 'HP:0002664', (66, 72)) ('MYBL2', 'Gene', '4605', (40, 45)) ('expression', 'MPA', (46, 56)) ('high', 'Var', (35, 39)) ('MYBL2', 'Gene', (40, 45)) 23776 30880007 In PRAD, where SDHAF3 displayed the strongest negative correlation between expression and mutation of all tumors, the gene was overexpressed relative to matched controls (not shown); however, SDHD was strongly downregulated. ('tumors', 'Phenotype', 'HP:0002664', (106, 112)) ('SDHAF3', 'Gene', '57001', (15, 21)) ('tumors', 'Disease', (106, 112)) ('overexpressed', 'PosReg', (127, 140)) ('tumors', 'Disease', 'MESH:D009369', (106, 112)) ('PRAD', 'Disease', (3, 7)) ('SDHAF3', 'Gene', (15, 21)) ('SDHD', 'Gene', (192, 196)) ('SDHD', 'Gene', '6392', (192, 196)) ('downregulated', 'NegReg', (210, 223)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('negative', 'NegReg', (46, 54)) ('mutation', 'Var', (90, 98)) ('expression', 'MPA', (75, 85)) 23780 30880007 Having established the validity of our analyses in uncovering genes whose deregulation seem to predict poor clinical outcome, we then conducted a systematic assessment of gene enrichment for a pool of genes with strong correlations in each tumor type. ('deregulation', 'Var', (74, 86)) ('tumor', 'Disease', (240, 245)) ('tumor', 'Phenotype', 'HP:0002664', (240, 245)) ('tumor', 'Disease', 'MESH:D009369', (240, 245)) 23787 30880007 We also conducted the gene enrichment analysis for the 270 genes (in each tumor type), whose expression was most negatively correlated with mutations, but did not find any enriched term. ('tumor', 'Disease', 'MESH:D009369', (74, 79)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('expression', 'MPA', (93, 103)) ('tumor', 'Disease', (74, 79)) ('mutations', 'Var', (140, 149)) ('negatively', 'NegReg', (113, 123)) 23789 30880007 Therefore, our correlation analysis of gene expression versus mutation loads identified pathways that are commonly altered in different types of cancer. ('cancer', 'Disease', (145, 151)) ('pathways', 'Pathway', (88, 96)) ('cancer', 'Phenotype', 'HP:0002664', (145, 151)) ('mutation', 'Var', (62, 70)) ('cancer', 'Disease', 'MESH:D009369', (145, 151)) 23790 30880007 In LUAD, although not in KICH and PRAD, the main pathways for the repair of base mismatch and base lesions, i.e. ('KICH', 'Disease', 'None', (25, 29)) ('base mismatch', 'Var', (76, 89)) ('KICH', 'Disease', (25, 29)) 23792 30880007 In addition, ALKBH3 (R = -0.22, P = 4.0x10-7) for alkylation damage reversal, RRM2B (R = -0.24, P = 2.7 x 10-8), which supplies dNTPs during DNA repair synthesis, POLK (R = -0.22, P = 3.9 x 10-7) for translesion DNA synthesis and UBE2B (R = -0.22, P = 4.9 x 10-7), involved in ubiquitination of PCNA also displayed negative correlations with mutational loads (Fig. ('RRM2B', 'Gene', (78, 83)) ('ALKBH3', 'Gene', (13, 19)) ('ALKBH3', 'Gene', '221120', (13, 19)) ('PCNA', 'Gene', (295, 299)) ('negative', 'NegReg', (315, 323)) ('UBE2B', 'Gene', '7320', (230, 235)) ('RRM2B', 'Gene', '50484', (78, 83)) ('mutational', 'Var', (342, 352)) ('PCNA', 'Gene', '5111', (295, 299)) ('POLK', 'Gene', (163, 167)) ('POLK', 'Gene', '51426', (163, 167)) ('UBE2B', 'Gene', (230, 235)) 23795 30880007 Translocation breakpoints were enriched at sequences with the potential to form G4 DNA structures in tumor samples that were characterized by elevated genetic instability and frequent mutations in tumor suppressor genes, such as TP53. ('tumor', 'Disease', 'MESH:D009369', (197, 202)) ('mutations', 'Var', (184, 193)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('tumor', 'Disease', (101, 106)) ('TP53', 'Gene', '7157', (229, 233)) ('tumor', 'Phenotype', 'HP:0002664', (197, 202)) ('TP53', 'Gene', (229, 233)) ('tumor', 'Disease', (197, 202)) ('tumor', 'Disease', 'MESH:D009369', (101, 106)) 23799 30880007 Genes whose expression is positively correlated with mutations were enriched in selected KEGG terms in more than one cancer type, which provides a platform for addressing the contribution of specific pathways to somatic mutation in cancer. ('cancer', 'Disease', 'MESH:D009369', (232, 238)) ('cancer', 'Phenotype', 'HP:0002664', (117, 123)) ('cancer', 'Disease', (232, 238)) ('expression', 'MPA', (12, 22)) ('mutations', 'Var', (53, 62)) ('cancer', 'Disease', 'MESH:D009369', (117, 123)) ('cancer', 'Phenotype', 'HP:0002664', (232, 238)) ('cancer', 'Disease', (117, 123)) 23802 30880007 Nevertheless, our estimates are in line with determinations of mutations at non-B DNA-forming motifs in cancer genomes and strengthens the concept, both from genome-wide and targeted studies, that non-B DNA structures contribute to mutagenesis, both in cancer and in genetic disease. ('mutations', 'Var', (63, 72)) ('genetic disease', 'Disease', (267, 282)) ('cancer', 'Phenotype', 'HP:0002664', (104, 110)) ('contribute', 'Reg', (218, 228)) ('cancer', 'Phenotype', 'HP:0002664', (253, 259)) ('cancer', 'Disease', 'MESH:D009369', (253, 259)) ('cancer', 'Disease', (253, 259)) ('mutagenesis', 'MPA', (232, 243)) ('cancer', 'Disease', (104, 110)) ('cancer', 'Disease', 'MESH:D009369', (104, 110)) ('genetic disease', 'Disease', 'MESH:D030342', (267, 282)) 23803 30880007 The prevalence of G4-associated translocation breakpoints with tumor samples carrying extensive genomic alterations is consistent with reports that TP53 mutant tumors are associated with high rates of genomic instability (reviewed in). ('tumors', 'Phenotype', 'HP:0002664', (160, 166)) ('tumor', 'Disease', (63, 68)) ('translocation breakpoints', 'Var', (32, 57)) ('G4-associated', 'Gene', (18, 31)) ('TP53', 'Gene', '7157', (148, 152)) ('TP53', 'Gene', (148, 152)) ('tumor', 'Disease', 'MESH:D009369', (160, 165)) ('mutant', 'Var', (153, 159)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('tumors', 'Disease', (160, 166)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('tumor', 'Disease', (160, 165)) ('genomic instability', 'MPA', (201, 220)) ('tumors', 'Disease', 'MESH:D009369', (160, 166)) 23804 30880007 TP53 mutants have been reported to sequester DNA repair factors, such as MRE11, away from double-strand breaks and at stalled replication forks, leading to an accumulation of translocations. ('TP53', 'Gene', '7157', (0, 4)) ('TP53', 'Gene', (0, 4)) ('MRE11', 'Gene', '4361', (73, 78)) ('accumulation', 'PosReg', (159, 171)) ('MRE11', 'Gene', (73, 78)) ('translocations', 'MPA', (175, 189)) ('mutants', 'Var', (5, 12)) 23806 30880007 Changes in gene expression, which we show here are extensive and impact cancer mutagenesis, are also likely to influence G4 DNA structure-induced genetic instability. ('influence', 'Reg', (111, 120)) ('cancer', 'Phenotype', 'HP:0002664', (72, 78)) ('Changes', 'Var', (0, 7)) ('cancer', 'Disease', 'MESH:D009369', (72, 78)) ('impact', 'Reg', (65, 71)) ('cancer', 'Disease', (72, 78)) 23807 30880007 We are also learning how replication and repair proteins, such as FEN1, can act in trans to greatly impact mutations so molecular mechanisms are expected to be key to improve predictions. ('impact', 'Reg', (100, 106)) ('FEN1', 'Gene', (66, 70)) ('FEN1', 'Gene', '2237', (66, 70)) ('mutations', 'Var', (107, 116)) 23814 30880007 MLH1 mediates protein-protein interactions during mismatch recognition, strand discrimination, and strand removal. ('protein-protein', 'Protein', (14, 29)) ('MLH1', 'Gene', '4292', (0, 4)) ('MLH1', 'Gene', (0, 4)) ('mediates', 'Reg', (5, 13)) ('mismatch recognition', 'Var', (50, 70)) ('strand discrimination', 'Var', (72, 93)) 23815 30880007 In colon and rectal cancers hypermutation has been linked in part to MLH1 hypermethylation, and in esophageal squamous cell carcinoma MLH1 promoter methylation correlates with weak expression and poor survival. ('cancer', 'Phenotype', 'HP:0002664', (20, 26)) ('expression', 'MPA', (181, 191)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (110, 133)) ('linked', 'Reg', (51, 57)) ('esophageal squamous cell carcinoma', 'Disease', (99, 133)) ('carcinoma', 'Phenotype', 'HP:0030731', (124, 133)) ('weak', 'NegReg', (176, 180)) ('MLH1', 'Gene', '4292', (134, 138)) ('MLH1', 'Gene', (134, 138)) ('MLH1', 'Gene', '4292', (69, 73)) ('hypermethylation', 'Var', (74, 90)) ('MLH1', 'Gene', (69, 73)) ('cancers', 'Phenotype', 'HP:0002664', (20, 27)) ('hypermutation', 'Var', (28, 41)) ('colon and rectal cancers', 'Disease', 'MESH:D015179', (3, 27)) ('esophageal squamous cell carcinoma', 'Disease', 'MESH:D000077277', (99, 133)) 23820 30880007 The polymeric immunoglobulin receptor (the PIGR gene product) pIgR plays an important role in protecting small airways of the lung from airborne antigens and microorganisms; PIGR-/- mice develop chronic obstructive pulmonary disease (COMP)-like pathology with age and persistent activation of innate immune response to the lung microbiome. ('chronic obstructive pulmonary disease', 'Disease', (195, 232)) ('pIgR', 'Gene', (62, 66)) ('chronic obstructive pulmonary disease', 'Disease', 'MESH:D029424', (195, 232)) ('mice', 'Species', '10090', (182, 186)) ('obstructive pulmonary disease', 'Phenotype', 'HP:0006536', (203, 232)) ('pIgR', 'Gene', '18703', (62, 66)) ('PIGR-/-', 'Var', (174, 181)) ('develop', 'Reg', (187, 194)) ('chronic obstructive pulmonary disease', 'Phenotype', 'HP:0006510', (195, 232)) 23821 30880007 Loss of PIGR is an early event in lung tumorigenesis, and it is plausible that the association of low PIGR with high mutation rates we observe reflects a role for the ensuing inflammation in mutagenesis, in part through the release of ROS and reactive nitrogen intermediates. ('nitrogen', 'Chemical', 'MESH:D009584', (252, 260)) ('tumor', 'Disease', 'MESH:D009369', (39, 44)) ('release', 'MPA', (224, 231)) ('low', 'NegReg', (98, 101)) ('PIGR', 'Gene', (8, 12)) ('ROS', 'MPA', (235, 238)) ('reactive nitrogen intermediates', 'MPA', (243, 274)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('tumor', 'Disease', (39, 44)) ('inflammation', 'Disease', 'MESH:D007249', (175, 187)) ('inflammation', 'Disease', (175, 187)) ('PIGR', 'Gene', (102, 106)) ('Loss', 'Var', (0, 4)) ('ROS', 'Chemical', 'MESH:D017382', (235, 238)) 23829 30880007 A causal association between MYBL2 expression and mutation loads has recently been reported, and involves transactivation of the APOBEC3B gene whose product (apolipoprotein B mRNA cytosine deaminase, A3B) generates ectopic C>U>T transitions and genomic hypermutation when overproduced. ('APOBEC3B', 'Gene', (129, 137)) ('genomic hypermutation', 'CPA', (245, 266)) ('apolipoprotein B', 'Gene', (158, 174)) ('APOBEC3B', 'Gene', '9582', (129, 137)) ('MYBL2', 'Gene', '4605', (29, 34)) ('apolipoprotein B', 'Gene', '338', (158, 174)) ('A3B', 'Gene', '9582', (200, 203)) ('ectopic C', 'MPA', (215, 224)) ('MYBL2', 'Gene', (29, 34)) ('mutation', 'Var', (50, 58)) ('A3B', 'Gene', (200, 203)) 23830 30880007 The strong correlation of the SDH accessory factor SDHAF3 with mutations was of particular interest since a germline c.157T>C (p.Phe53Leu) substitution in this gene was recently associated with increased prevalence of familiar and sporadic pheochromocytoma and paraganglioma, which are characteristic of SDH-deficiency. ('SDHAF3', 'Gene', (51, 57)) ('associated with', 'Reg', (178, 193)) ('SDH', 'Gene', (51, 54)) ('c.157T>C', 'Mutation', 'rs62624461', (117, 125)) ('sporadic pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (231, 274)) ('SDH', 'Gene', (304, 307)) ('c.157T>C', 'Var', (117, 125)) ('paraganglioma', 'Phenotype', 'HP:0002668', (261, 274)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (127, 137)) ('familiar', 'Disease', (218, 226)) ('glioma', 'Phenotype', 'HP:0009733', (268, 274)) ('SDH', 'Gene', '6390', (30, 33)) ('SDH-deficiency', 'Disease', 'MESH:D007153', (304, 318)) ('SDH-deficiency', 'Disease', (304, 318)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (240, 256)) ('SDH', 'Gene', '6390', (51, 54)) ('SDH', 'Gene', (30, 33)) ('SDH', 'Gene', '6390', (304, 307)) ('SDHAF3', 'Gene', '57001', (51, 57)) 23832 30880007 The fundamental importance of Fe-S clusters and control of superoxide support the observed connections of the SDHB subunit with mutational load. ('SDHB', 'Gene', (110, 114)) ('superoxide', 'Chemical', 'MESH:D013481', (59, 69)) ('Fe-S', 'Chemical', 'MESH:D007501', (30, 34)) ('mutational load', 'Var', (128, 143)) ('SDHB', 'Gene', '6390', (110, 114)) ('connections', 'Interaction', (91, 102)) 23835 30880007 Thus, anticorrelation between SDHAF3 expression and mutations may stem from SDH deficiency. ('mutations', 'Var', (52, 61)) ('stem from', 'Reg', (66, 75)) ('SDH deficiency', 'Disease', 'MESH:D007153', (76, 90)) ('SDHAF3', 'Gene', '57001', (30, 36)) ('SDHAF3', 'Gene', (30, 36)) ('expression', 'MPA', (37, 47)) ('SDH deficiency', 'Disease', (76, 90)) 23837 30880007 The clustering encompassing KICH, LUAD, PRAD and LGG is centered on cell cycle, DNA replication and DNA repair genes, and the positive correlations with mutations likely arise from replication stress, excessive DNA damage (such as A3B activation) and its escape from repair. ('A3B', 'Gene', (231, 234)) ('DNA', 'MPA', (211, 214)) ('mutations', 'Var', (153, 162)) ('KICH', 'Disease', (28, 32)) ('stress', 'Disease', 'MESH:D000079225', (193, 199)) ('A3B', 'Gene', '9582', (231, 234)) ('stress', 'Disease', (193, 199)) ('KICH', 'Disease', 'None', (28, 32)) ('arise from', 'Reg', (170, 180)) 23839 30880007 Thus, we propose that the association of mitochondrial gene expression with mutations likely stems from direct damage to DNA by increased ROS and other oxidants. ('ROS', 'MPA', (138, 141)) ('mutations', 'Var', (76, 85)) ('mitochondrial gene', 'Gene', (41, 59)) ('increased', 'PosReg', (128, 137)) ('ROS', 'Chemical', 'MESH:D017382', (138, 141)) 23842 30880007 The ectopic expression and upregulation of olfactory receptors in melanoma (SKCM) is a potential source of malignant transformation, and it will be useful to assess their role in mutagenesis. ('melanoma', 'Disease', 'MESH:D008545', (66, 74)) ('melanoma', 'Phenotype', 'HP:0002861', (66, 74)) ('melanoma', 'Disease', (66, 74)) ('olfactory receptors', 'Protein', (43, 62)) ('upregulation', 'PosReg', (27, 39)) ('ectopic expression', 'Var', (4, 22)) 23847 30880007 We found that G4 DNA-forming sequences are enriched twofold at translocation breakpoints, strengthening the view that G4 DNA structures contribute to genomic instability in cancer; many such structures are likely to originate from L1 and SVA retrotransposons and contribute to instability. ('cancer', 'Disease', 'MESH:D009369', (173, 179)) ('cancer', 'Disease', (173, 179)) ('genomic instability', 'MPA', (150, 169)) ('contribute', 'Reg', (136, 146)) ('cancer', 'Phenotype', 'HP:0002664', (173, 179)) ('transposons', 'Species', '2387', (247, 258)) ('G4 DNA', 'Var', (118, 124)) 23848 30880007 Mutations in TP53 increase the chance of G4 DNA-induced translocations, possibly through defects in homologous recombination following replication fork stalling at G4 DNA. ('TP53', 'Gene', (13, 17)) ('homologous', 'MPA', (100, 110)) ('defects', 'NegReg', (89, 96)) ('Mutations', 'Var', (0, 9)) ('translocations', 'MPA', (56, 70)) ('TP53', 'Gene', '7157', (13, 17)) 23850 30880007 Transcriptome analyses identify two distinct branches though which alterations in gene expression may lead to an accumulation of single base substitutions in cancer: 1) activation of cell cycle/DNA repair; and 2) loss of homeostatic control of mitochondrial respiration. ('homeostatic control of mitochondrial respiration', 'MPA', (221, 269)) ('activation', 'PosReg', (169, 179)) ('cell cycle/DNA repair', 'CPA', (183, 204)) ('cancer', 'Disease', 'MESH:D009369', (158, 164)) ('alterations', 'Var', (67, 78)) ('cancer', 'Disease', (158, 164)) ('single base substitutions', 'Var', (129, 154)) ('loss', 'NegReg', (213, 217)) ('cancer', 'Phenotype', 'HP:0002664', (158, 164)) 23853 30880007 Tumor-specific alterations in gene expression associated with mutation loads also include the ectopic expression of olfactory receptor genes in skin cancer, exacerbation of the ER unfolded protein response in breast cancer and altered HLA gene expression in cervical cancer. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('cancer', 'Disease', 'MESH:D009369', (267, 273)) ('alterations', 'Reg', (15, 26)) ('ER unfolded protein response', 'MPA', (177, 205)) ('HLA', 'Protein', (235, 238)) ('cancer', 'Disease', (216, 222)) ('gene expression', 'MPA', (30, 45)) ('skin cancer', 'Disease', (144, 155)) ('cancer', 'Phenotype', 'HP:0002664', (216, 222)) ('mutation loads', 'Var', (62, 76)) ('cancer', 'Disease', (149, 155)) ('skin cancer', 'Phenotype', 'HP:0008069', (144, 155)) ('cancer', 'Disease', (267, 273)) ('breast cancer', 'Phenotype', 'HP:0003002', (209, 222)) ('cancer', 'Phenotype', 'HP:0002664', (149, 155)) ('cancer', 'Phenotype', 'HP:0002664', (267, 273)) ('cancer', 'Disease', 'MESH:D009369', (216, 222)) ('ectopic expression', 'MPA', (94, 112)) ('olfactory receptor genes', 'Gene', (116, 140)) ('breast cancer', 'Disease', 'MESH:D001943', (209, 222)) ('altered', 'Reg', (227, 234)) ('breast cancer', 'Disease', (209, 222)) ('skin cancer', 'Disease', 'MESH:D012878', (144, 155)) ('exacerbation', 'PosReg', (157, 169)) ('cancer', 'Disease', 'MESH:D009369', (149, 155)) 23855 30880007 The second is to clarify how deregulation of the mitochondrial respiratory chain and its link to the TCA cycle through the SDH complex elicits mutations. ('SDH', 'Gene', (123, 126)) ('deregulation', 'MPA', (29, 41)) ('mitochondrial respiratory chain', 'Enzyme', (49, 80)) ('elicits', 'Reg', (135, 142)) ('SDH', 'Gene', '6390', (123, 126)) ('TCA', 'Chemical', 'MESH:D014233', (101, 104)) ('mutations', 'Var', (143, 152)) 23876 31330766 Approximately 40-50% of MPPGs are associated with germline mutations of the succinate dehydrogenase subunit B (SDHB) gene. ('MPPGs', 'Disease', (24, 29)) ('associated', 'Reg', (34, 44)) ('SDHB', 'Gene', (111, 115)) ('germline mutations', 'Var', (50, 68)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (76, 109)) ('MPPGs', 'Chemical', '-', (24, 29)) ('succinate dehydrogenase subunit B', 'Gene', (76, 109)) ('SDHB', 'Gene', '6390', (111, 115)) 23905 31330766 However, I-123 offers better imaging characteristics than I-131 with conventional gamma cameras and is the preferred radioisotope for diagnostic purposes. ('I-131', 'Chemical', 'MESH:C000614965', (58, 63)) ('I', 'Chemical', 'MESH:D007455', (9, 10)) ('I-123', 'Var', (9, 14)) ('imaging characteristics', 'MPA', (29, 52)) ('I', 'Chemical', 'MESH:D007455', (58, 59)) 23909 31330766 For diagnostic purposes, I-123-MIBG and I-131-MIBG are provided at a dose of 5 mCi (185 MBq). ('I-131-MIBG', 'Var', (40, 50)) ('I-123-MIBG', 'Chemical', '-', (25, 35)) ('I-131-MIBG', 'Chemical', '-', (40, 50)) ('I-123-MIBG', 'Var', (25, 35)) 23910 31330766 At a high dose level, I-131-MIBG may emit enough beta (primarily) and gamma (secondarily) radiation to cause lethal cellular damage. ('At', 'Chemical', 'MESH:D001246', (0, 2)) ('cause', 'Reg', (103, 108)) ('I-131-MIBG', 'Chemical', '-', (22, 32)) ('I-131-MIBG', 'Var', (22, 32)) 23916 31330766 I-131-MIBG may therefore control one of the most important hallmarks of cancer, sustained replicative signaling. ('cancer', 'Phenotype', 'HP:0002664', (72, 78)) ('sustained replicative signaling', 'MPA', (80, 111)) ('I-131-MIBG', 'Chemical', '-', (0, 10)) ('I-131-MIBG', 'Var', (0, 10)) ('control', 'Reg', (25, 32)) ('cancer', 'Disease', 'MESH:D009369', (72, 78)) ('cancer', 'Disease', (72, 78)) 23930 31330766 However, clinical experience and observations derived from phase 2 clinical trials for patients with MPPGs treated with radiolabeled MIBG indicate that patients with SDHB mutations may respond very well to therapy. ('SDHB', 'Gene', '6390', (166, 170)) ('SDHB', 'Gene', (166, 170)) ('MIBG', 'Chemical', 'MESH:D019797', (133, 137)) ('MPPGs', 'Chemical', '-', (101, 106)) ('mutations', 'Var', (171, 180)) ('patients', 'Species', '9606', (87, 95)) ('patients', 'Species', '9606', (152, 160)) 23935 31330766 Isotopic exchange yields in a considerable amount of cold carrier MIBG in the final solution. ('I', 'Chemical', 'MESH:D007455', (67, 68)) ('MIBG', 'Chemical', 'MESH:D019797', (66, 70)) ('Isotopic', 'Var', (0, 8)) ('I', 'Chemical', 'MESH:D007455', (0, 1)) ('cold carrier MIBG', 'MPA', (53, 70)) ('yields', 'Reg', (18, 24)) 23942 31330766 HSA-I-131-MIBG results in an increased cellular uptake of lethal radioactivity, approximately 100-200 times higher than that of LSA-I-131-MIBG. ('HSA-I-131-MIBG', 'Var', (0, 14)) ('cellular uptake of lethal radioactivity', 'MPA', (39, 78)) ('LSA-I-131-MIBG', 'Chemical', '-', (128, 142)) ('increased', 'PosReg', (29, 38)) ('HSA-I-131-MIBG', 'Chemical', '-', (0, 14)) ('higher', 'PosReg', (108, 114)) 23943 31330766 Compared with LSA-I-131-MIBG, HSA-I-131-MIBG is less likely to saturate the NET and subsequently may cause fewer hormonal complications. ('saturate the NET', 'MPA', (63, 79)) ('LSA-I-131-MIBG', 'Chemical', '-', (14, 28)) ('HSA-I-131-MIBG', 'Var', (30, 44)) ('HSA-I-131-MIBG', 'Chemical', '-', (30, 44)) ('cause', 'Reg', (101, 106)) ('hormonal', 'Disease', (113, 121)) 23959 31330766 Second treatment dose reduction is recommended in the settings of measured platelet count less than 25,000 microL or less than 50,000 microL with active bleeding, ANC less than 500/microL or febrile neutropenia, and life-threatening anemia (hemoglobin less than 6.5 g/dL) for more than seven days. ('less', 'NegReg', (90, 94)) ('anemia', 'Phenotype', 'HP:0001903', (233, 239)) ('less than 500/microL', 'Var', (167, 187)) ('anemia', 'Disease', (233, 239)) ('active bleeding', 'Disease', 'MESH:D006470', (146, 161)) ('neutropenia', 'Phenotype', 'HP:0001875', (199, 210)) ('anemia', 'Disease', 'MESH:D000740', (233, 239)) ('febrile neutropenia', 'Disease', (191, 210)) ('febrile neutropenia', 'Disease', 'MESH:D009503', (191, 210)) ('active bleeding', 'Disease', (146, 161)) 23973 31330766 These publications suggest that LSA-1-131-MIBG could be an effective treatment for some patients with MPPG. ('MPPG', 'Disease', (102, 106)) ('patients', 'Species', '9606', (88, 96)) ('131-MIBG', 'Chemical', '-', (38, 46)) ('MPPG', 'Chemical', '-', (102, 106)) ('LSA-1-131-MIBG', 'Var', (32, 46)) 23979 31330766 The study also confirmed that patients with MIBG-avid tumors (as demonstrated by pretreatment MIBG scanning), but not patients with tumors that are not MIBG avid, may benefit from LSA-I-131-MIBG. ('MIBG-avid tumors', 'Disease', 'MESH:D009369', (44, 60)) ('MIBG', 'Chemical', 'MESH:D019797', (94, 98)) ('MIBG', 'Chemical', 'MESH:D019797', (44, 48)) ('tumors', 'Phenotype', 'HP:0002664', (54, 60)) ('tumors', 'Phenotype', 'HP:0002664', (132, 138)) ('patients', 'Species', '9606', (30, 38)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) ('tumors', 'Disease', (54, 60)) ('benefit', 'PosReg', (167, 174)) ('LSA-I-131-MIBG', 'Var', (180, 194)) ('LSA-I-131-MIBG', 'Chemical', '-', (180, 194)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('MIBG', 'Chemical', 'MESH:D019797', (152, 156)) ('tumors', 'Disease', (132, 138)) ('tumors', 'Disease', 'MESH:D009369', (54, 60)) ('MIBG', 'Chemical', 'MESH:D019797', (190, 194)) ('tumors', 'Disease', 'MESH:D009369', (132, 138)) ('patients', 'Species', '9606', (118, 126)) ('MIBG-avid tumors', 'Disease', (44, 60)) 23981 31330766 After treatment with LSA-I-131-MIBG, 30% of patients exhibited an objective tumor response, including 4% of patients with tumor disappearance or complete responses (CRs) and 26% of patients with partial responses (PRs). ('patients', 'Species', '9606', (108, 116)) ('patients', 'Species', '9606', (44, 52)) ('PRs', 'Chemical', '-', (214, 217)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('tumor', 'Disease', (76, 81)) ('tumor', 'Disease', 'MESH:D009369', (122, 127)) ('patients', 'Species', '9606', (181, 189)) ('tumor', 'Disease', 'MESH:D009369', (76, 81)) ('tumor', 'Phenotype', 'HP:0002664', (122, 127)) ('LSA-I-131-MIBG', 'Var', (21, 35)) ('LSA-I-131-MIBG', 'Chemical', '-', (21, 35)) ('tumor', 'Disease', (122, 127)) ('CRs', 'Chemical', '-', (165, 168)) ('disappearance', 'NegReg', (128, 141)) 23989 31330766 This study also suggested that LSA-I-131-MIBG may improve overall survival (OS). ('overall survival', 'MPA', (58, 74)) ('OS', 'Chemical', '-', (76, 78)) ('LSA-I-131-MIBG', 'Chemical', '-', (31, 45)) ('improve', 'PosReg', (50, 57)) ('LSA-I-131-MIBG', 'Var', (31, 45)) 23991 31330766 Less heterogeneous retrospective studies from referral centers have also suggested that low doses of LSA-I-131-MIBG (median <200 mCi) may bring clinical benefits and minimal toxicity for patients with MPPGs. ('patients', 'Species', '9606', (187, 195)) ('MPPGs', 'Chemical', '-', (201, 206)) ('benefits', 'PosReg', (153, 161)) ('clinical', 'MPA', (144, 152)) ('toxicity', 'Disease', (174, 182)) ('LSA-I-131-MIBG', 'Var', (101, 115)) ('LSA-I-131-MIBG', 'Chemical', '-', (101, 115)) ('toxicity', 'Disease', 'MESH:D064420', (174, 182)) 23999 31330766 published the largest single-institution retrospective study of single low doses of LSA-I-131-MIBG for the treatment of MPPG. ('LSA-I-131-MIBG', 'Var', (84, 98)) ('MPPG', 'Chemical', '-', (120, 124)) ('LSA-I-131-MIBG', 'Chemical', '-', (84, 98)) ('MPPG', 'Disease', (120, 124)) 24002 31330766 The results of this study suggested that small, single doses of LSA-I-131-MIBG have a limited antineoplastic benefit. ('LSA-I-131-MIBG', 'Chemical', '-', (64, 78)) ('antineoplastic benefit', 'CPA', (94, 116)) ('LSA-I-131-MIBG', 'Var', (64, 78)) 24003 31330766 The retrospective studies discussed above indicated that the major toxicity associated with small doses of LSA-I-131-MIBG was a reversible bone marrow insufficiency. ('LSA-I-131-MIBG', 'Chemical', '-', (107, 121)) ('bone marrow insufficiency', 'Phenotype', 'HP:0005528', (139, 164)) ('bone marrow insufficiency', 'Disease', 'MESH:D000081003', (139, 164)) ('LSA-I-131-MIBG', 'Var', (107, 121)) ('bone marrow insufficiency', 'Disease', (139, 164)) ('toxicity', 'Disease', 'MESH:D064420', (67, 75)) ('toxicity', 'Disease', (67, 75)) 24010 31330766 Patients whose disease responded to LSA-I-131-MIBG had significantly longer OS when compared with those whose disease did not (4.7 versus 1.8 years, p < 0.01). ('OS', 'Chemical', '-', (76, 78)) ('LSA-I-131-MIBG', 'Var', (36, 50)) ('LSA-I-131-MIBG', 'Chemical', '-', (36, 50)) ('Patients', 'Species', '9606', (0, 8)) ('longer', 'PosReg', (69, 75)) 24023 31330766 All patients with MPPGs and germline SDHB mutations exhibited clinical benefits. ('MPPGs', 'Disease', (18, 23)) ('SDHB', 'Gene', '6390', (37, 41)) ('benefits', 'PosReg', (71, 79)) ('SDHB', 'Gene', (37, 41)) ('MPPGs', 'Chemical', '-', (18, 23)) ('patients', 'Species', '9606', (4, 12)) ('mutations', 'Var', (42, 51)) 24024 31330766 The study did not report whether the other patients were tested for susceptibility genes; therefore, it was not possible to determine if SDHB status could predict OS. ('status', 'Var', (142, 148)) ('patients', 'Species', '9606', (43, 51)) ('OS', 'Chemical', '-', (163, 165)) ('SDHB', 'Gene', '6390', (137, 141)) ('SDHB', 'Gene', (137, 141)) ('predict', 'Reg', (155, 162)) 24028 31330766 Two patients developed lethal myelodysplasia after two and three treatments with high doses of LSA-I-131-MIBG. ('developed', 'Reg', (13, 22)) ('myelodysplasia', 'Disease', 'MESH:D009190', (30, 44)) ('myelodysplasia', 'Disease', (30, 44)) ('LSA-I-131-MIBG', 'Var', (95, 109)) ('LSA-I-131-MIBG', 'Chemical', '-', (95, 109)) ('patients', 'Species', '9606', (4, 12)) ('myelodysplasia', 'Phenotype', 'HP:0002863', (30, 44)) 24029 31330766 Of interest, 10 patients had hypertension during the infusion of LSA-I-131-MIB, including seven patients who had severe (grade 3) hypertension. ('hypertension', 'Disease', 'MESH:D006973', (130, 142)) ('hypertension', 'Disease', (29, 41)) ('hypertension', 'Phenotype', 'HP:0000822', (29, 41)) ('LSA-I-131-MIB', 'Chemical', '-', (65, 78)) ('hypertension', 'Disease', (130, 142)) ('patients', 'Species', '9606', (16, 24)) ('hypertension', 'Phenotype', 'HP:0000822', (130, 142)) ('LSA-I-131-MIB', 'Var', (65, 78)) ('patients', 'Species', '9606', (96, 104)) ('hypertension', 'Disease', 'MESH:D006973', (29, 41)) 24041 31330766 Therefore, the lack of tumor progression that was observed in some patients after treatment may not be related to the antineoplastic effects of LSA-I-131-MIBG. ('patients', 'Species', '9606', (67, 75)) ('tumor', 'Disease', 'MESH:D009369', (23, 28)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('tumor', 'Disease', (23, 28)) ('LSA-I-131-MIBG', 'Var', (144, 158)) ('LSA-I-131-MIBG', 'Chemical', '-', (144, 158)) 24046 31330766 Although some studies suggest that patients with MPPGs treated with LSA-I-131-MIBG had an improvement of their clinical manifestations, none of these studies used standardized instruments to evaluate quality of life. ('improvement', 'PosReg', (90, 101)) ('MPPGs', 'Disease', (49, 54)) ('clinical manifestations', 'MPA', (111, 134)) ('patients', 'Species', '9606', (35, 43)) ('LSA-I-131-MIBG', 'Var', (68, 82)) ('MPPGs', 'Chemical', '-', (49, 54)) ('LSA-I-131-MIBG', 'Chemical', '-', (68, 82)) 24049 31330766 In fact, severe cardiovascular and pulmonary adverse events were mainly seen in patients treated with a high dose rather than a low or intermediate dose of LSA-I-131-MIBG. ('patients', 'Species', '9606', (80, 88)) ('seen', 'Reg', (72, 76)) ('cardiovascular', 'Disease', (16, 30)) ('I', 'Chemical', 'MESH:D007455', (167, 168)) ('I', 'Chemical', 'MESH:D007455', (160, 161)) ('LSA-I-131-MIBG', 'Var', (156, 170)) ('I', 'Chemical', 'MESH:D007455', (0, 1)) ('LSA-I-131-MIBG', 'Chemical', '-', (156, 170)) 24057 31330766 Approximately 80% of the medication was excreted unaltered in the urine over a period no longer than 120 h. This finding was similar to those of an organ dosimetry study showing that organ distribution and whole-body retention of HSA-I-123-MIBG in cancer-free individuals were similar to that of LSA-I-123-MIBG. ('I-123-MIBG', 'Chemical', '-', (234, 244)) ('cancer-free', 'Disease', (248, 259)) ('I-123-MIBG', 'Chemical', '-', (300, 310)) ('cancer', 'Phenotype', 'HP:0002664', (248, 254)) ('HSA-I-123-MIBG', 'Chemical', '-', (230, 244)) ('HSA-I-123-MIBG', 'Var', (230, 244)) ('cancer-free', 'Disease', 'MESH:D009369', (248, 259)) 24058 31330766 An open label, multicenter, dose-escalation, phase 1 clinical trial for 21 patients with metastatic and/or unresectable PPGs was designed to determine the maximum tolerated dose of HSA-I-131-MIBG. ('HSA-I-131-MIBG', 'Var', (181, 195)) ('patients', 'Species', '9606', (75, 83)) ('PPGs', 'Disease', (120, 124)) ('PPGs', 'Chemical', '-', (120, 124)) ('HSA-I-131-MIBG', 'Chemical', '-', (181, 195)) 24086 31330766 The number of PRs increased over time, an observation that suggests that HSA-I-131-MIBG has persistent antitumor effects (Figure 4). ('PRs', 'CPA', (14, 17)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumor', 'Disease', (107, 112)) ('HSA-I-131-MIBG', 'Chemical', '-', (73, 87)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) ('PRs', 'Chemical', '-', (14, 17)) ('HSA-I-131-MIBG', 'Var', (73, 87)) 24117 31330766 Therefore, the surgical resection of the primary tumor and/or metastasectomy, if possible, should be considered in preparation for therapy with I-131-MIBG. ('tumor', 'Disease', 'MESH:D009369', (49, 54)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('I-131-MIBG', 'Chemical', '-', (144, 154)) ('tumor', 'Disease', (49, 54)) ('I-131-MIBG', 'Var', (144, 154)) 24121 31330766 Like radiolabeled MIBG, CVD may cause bone marrow insufficiency and (rarely) predispose patients to secondary hematological malignancies (e.g., myelodysplasia, acute myelogenous leukemia). ('myelodysplasia', 'Phenotype', 'HP:0002863', (144, 158)) ('hematological malignancies', 'Phenotype', 'HP:0004377', (110, 136)) ('myelogenous leukemia', 'Phenotype', 'HP:0012324', (166, 186)) ('CVD', 'Chemical', '-', (24, 27)) ('myelodysplasia', 'Disease', 'MESH:D009190', (144, 158)) ('CVD', 'Var', (24, 27)) ('cause', 'Reg', (32, 37)) ('hematological malignancies', 'Disease', (110, 136)) ('leukemia', 'Phenotype', 'HP:0001909', (178, 186)) ('acute myelogenous leukemia', 'Phenotype', 'HP:0004808', (160, 186)) ('MIBG', 'Chemical', 'MESH:D019797', (18, 22)) ('myelodysplasia', 'Disease', (144, 158)) ('acute myelogenous leukemia', 'Disease', (160, 186)) ('bone marrow insufficiency', 'Disease', (38, 63)) ('patients', 'Species', '9606', (88, 96)) ('bone marrow insufficiency', 'Phenotype', 'HP:0005528', (38, 63)) ('predispose', 'Reg', (77, 87)) ('hematological malignancies', 'Disease', 'MESH:D019337', (110, 136)) ('acute myelogenous leukemia', 'Disease', 'MESH:D015470', (160, 186)) ('bone marrow insufficiency', 'Disease', 'MESH:D000081003', (38, 63)) 24137 31330766 In fact, a recent publication described a MPPG patient treated with sunitinib and LSA-I-131-MIBG who had a CR with a remission that lasted for nine months. ('patient', 'Species', '9606', (47, 54)) ('LSA-I-131-MIBG', 'Chemical', '-', (82, 96)) ('CR', 'Chemical', '-', (107, 109)) ('MPPG', 'Disease', (42, 46)) ('I', 'Chemical', 'MESH:D007455', (93, 94)) ('I', 'Chemical', 'MESH:D007455', (0, 1)) ('LSA-I-131-MIBG', 'Var', (82, 96)) ('sunitinib', 'Chemical', 'MESH:D000077210', (68, 77)) ('I', 'Chemical', 'MESH:D007455', (86, 87)) ('MPPG', 'Chemical', '-', (42, 46)) 24138 31330766 A reduction of the tumor burden with medications such as cabozantinib or sunitinib may increase the efficacy of I-131-MIBG. ('I-131-MIBG', 'Var', (112, 122)) ('increase', 'PosReg', (87, 95)) ('tumor', 'Disease', 'MESH:D009369', (19, 24)) ('sunitinib', 'Chemical', 'MESH:D000077210', (73, 82)) ('reduction', 'NegReg', (2, 11)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('tumor', 'Disease', (19, 24)) ('efficacy', 'MPA', (100, 108)) ('I-131-MIBG', 'Chemical', '-', (112, 122)) ('cabozantinib', 'Chemical', 'MESH:C558660', (57, 69)) 24153 31330766 In contrast, I-131-MIBG may enhance a systemic response to immunotherapy. ('I-131-MIBG', 'Chemical', '-', (13, 23)) ('I-131-MIBG', 'Var', (13, 23)) ('enhance', 'PosReg', (28, 35)) ('I', 'Chemical', 'MESH:D007455', (0, 1)) ('I', 'Chemical', 'MESH:D007455', (20, 21)) ('I', 'Chemical', 'MESH:D007455', (13, 14)) ('systemic response to immunotherapy', 'CPA', (38, 72)) 24158 31330766 Unlike iodine-labeled MIBG, At-211-MABG decays by emitting alpha particles. ('emitting alpha particles', 'MPA', (50, 74)) ('iodine', 'Chemical', 'MESH:D007455', (7, 13)) ('decays', 'MPA', (40, 46)) ('At-211-MABG', 'Var', (28, 39)) ('MIBG', 'Chemical', 'MESH:D019797', (22, 26)) ('At', 'Chemical', 'MESH:D001246', (28, 30)) 24161 31330766 The use of At-211-MABG in a PC12 mouse model caused a substantial reduction of pheochromocytomas with mild detrimental effects on bone marrow cells. ('pheochromocytomas', 'Disease', 'MESH:D010673', (79, 96)) ('a PC12', 'CellLine', 'CVCL:0481', (26, 32)) ('pheochromocytomas', 'Disease', (79, 96)) ('At-211-MABG', 'Var', (11, 22)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (79, 96)) ('mouse', 'Species', '10090', (33, 38)) ('At', 'Chemical', 'MESH:D001246', (11, 13)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (79, 95)) ('reduction', 'NegReg', (66, 75)) 24162 31330766 At-211-MABG may therefore be a potential treatment for patients with MPPG. ('MPPG', 'Disease', (69, 73)) ('At-211-MABG', 'Var', (0, 11)) ('patients', 'Species', '9606', (55, 63)) ('At', 'Chemical', 'MESH:D001246', (0, 2)) ('MPPG', 'Chemical', '-', (69, 73)) 24165 31330766 In patients with neuroblastoma, positive responses have been noted in approximately 60% of those treated with LSA-I-131-MIBG. ('neuroblastoma', 'Phenotype', 'HP:0003006', (17, 30)) ('I', 'Chemical', 'MESH:D007455', (114, 115)) ('LSA-I-131-MIBG', 'Var', (110, 124)) ('LSA-I-131-MIBG', 'Chemical', '-', (110, 124)) ('neuroblastoma', 'Disease', 'MESH:D009447', (17, 30)) ('I', 'Chemical', 'MESH:D007455', (0, 1)) ('patients', 'Species', '9606', (3, 11)) ('neuroblastoma', 'Disease', (17, 30)) ('I', 'Chemical', 'MESH:D007455', (121, 122)) 24228 30087781 Some of the hereditary paragangliomas that are located in the head and neck, have mutations in the genes encoding succinate dehydrogenase (SDH) enzyme complex subunits. ('paraganglioma', 'Phenotype', 'HP:0002668', (23, 36)) ('SDH', 'Gene', (139, 142)) ('succinate dehydrogenase', 'Gene', '6390', (114, 137)) ('SDH', 'Gene', '6390', (139, 142)) ('mutations', 'Var', (82, 91)) ('succinate dehydrogenase', 'Gene', (114, 137)) ('hereditary paragangliomas', 'Disease', 'MESH:D010235', (12, 37)) ('paragangliomas', 'Phenotype', 'HP:0002668', (23, 37)) ('hereditary paragangliomas', 'Disease', (12, 37)) 24245 29978154 Pathogenicity and Penetrance of Germline SDHA Variants in Pheochromocytoma and Paraganglioma (PPGL) Germline SDHA mutations are reported in a minority of pheochromocytoma/paraganglioma (PPGL) cases but are associated with an increased risk of malignancy, leading some to advocate cascade genetic testing and surveillance screening of "at-risk" first-degree relatives. ('paraganglioma', 'Phenotype', 'HP:0002668', (171, 184)) ('SDHA', 'Gene', (41, 45)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (58, 74)) ('mutations', 'Var', (114, 123)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (154, 184)) ('SDHA', 'Gene', '6389', (109, 113)) ('Pheochromocytoma and Paraganglioma', 'Disease', 'MESH:D010673', (58, 92)) ('pheochromocytoma/paraganglioma', 'Disease', (154, 184)) ('Variants', 'Var', (46, 54)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('SDHA', 'Gene', '6389', (41, 45)) ('malignancy', 'Disease', 'MESH:D009369', (243, 253)) ('SDHA', 'Gene', (109, 113)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (154, 170)) ('malignancy', 'Disease', (243, 253)) 24246 29978154 Thus, the aim of the current study was to evaluate the pathogenicity and penetrance of SDHA variants reported in literature-based PPGL cases by comparing their frequency to those occurring in the Genome Aggregation Database (GnomAD) data set, which provides high-quality DNA sequence data on 138,632 individuals. ('SDHA', 'Gene', (87, 91)) ('SDHA', 'Gene', '6389', (87, 91)) ('variants', 'Var', (92, 100)) 24247 29978154 In total, 39 different missense or loss-of-function (LOF) SDHA variants were identified in 95 PPGL index cases. ('SDHA', 'Gene', '6389', (58, 62)) ('variants', 'Var', (63, 71)) ('loss-of-function', 'NegReg', (35, 51)) ('SDHA', 'Gene', (58, 62)) ('missense', 'Var', (23, 31)) 24248 29978154 Notably, many of the PPGL-associated SDHA alleles were observed at an unexpectedly high frequency in the GnomAD cohort, with ~1% and ~0.1% of the background population harboring a rare missense or LOF variant, respectively. ('PPGL-associated', 'Gene', (21, 36)) ('LOF', 'NegReg', (197, 200)) ('missense', 'Var', (185, 193)) ('SDHA', 'Gene', '6389', (37, 41)) ('SDHA', 'Gene', (37, 41)) 24250 29978154 Thus, although this study provides support for the etiological role of SDHA in PPGL formation, it suggests that most variant carriers will not manifest PPGLs and are unlikely to benefit from periodic surveillance screening. ('SDHA', 'Gene', '6389', (71, 75)) ('variant', 'Var', (117, 124)) ('SDHA', 'Gene', (71, 75)) 24251 29978154 Germline SDHA variants are enriched in patients with pheochromocytoma/paraganglioma but are associated with very low disease penetrance such that most variant carriers will not manifest disease. ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (53, 83)) ('patients', 'Species', '9606', (39, 47)) ('SDHA', 'Gene', '6389', (9, 13)) ('variants', 'Var', (14, 22)) ('paraganglioma', 'Phenotype', 'HP:0002668', (70, 83)) ('very low disease', 'Disease', 'MESH:D009800', (108, 124)) ('SDHA', 'Gene', (9, 13)) ('pheochromocytoma/paraganglioma', 'Disease', (53, 83)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (53, 69)) ('very low disease', 'Disease', (108, 124)) 24252 29978154 Pheochromocytomas and paragangliomas (PPGLs) are highly heritable tumors but display marked genetic heterogeneity such that ~35% of cases harbor germline mutations in one of >=15 genes. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('Pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (0, 36)) ('tumors', 'Disease', (66, 72)) ('tumors', 'Disease', 'MESH:D009369', (66, 72)) ('tumors', 'Phenotype', 'HP:0002664', (66, 72)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('paraganglioma', 'Phenotype', 'HP:0002668', (22, 35)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('germline mutations', 'Var', (145, 163)) ('paragangliomas', 'Phenotype', 'HP:0002668', (22, 36)) 24254 29978154 Indeed, the identification of a germline mutation in one of the PPGL susceptibility genes may not only have important clinical implications for the patient but may also facilitate cascade testing and periodic surveillance of "at-risk" first-degree relatives, although the appropriate implementation of such screening programs relies on accurate estimates of variant pathogenicity and disease penetrance. ('patient', 'Species', '9606', (148, 155)) ('PPGL', 'Gene', (64, 68)) ('facilitate', 'PosReg', (169, 179)) ('germline mutation', 'Var', (32, 49)) 24255 29978154 In particular, mutations in SDHB and SDHD have been established in large numbers of PPGL cases, providing unequivocal evidence of pathogenicity. ('PPGL', 'Disease', (84, 88)) ('SDHD', 'Gene', '6392', (37, 41)) ('mutations', 'Var', (15, 24)) ('SDHD', 'Gene', (37, 41)) ('SDHB', 'Gene', '6390', (28, 32)) ('SDHB', 'Gene', (28, 32)) 24256 29978154 Furthermore, the evaluation of cohorts of SDHB and SDHD variant carriers has facilitated reliable estimates of disease penetrance (i.e., ~20% and ~45% by age 60 years for SDHB and SDHD, respectively), thereby supporting the likely effectiveness of periodic surveillance of "at-risk" individuals. ('SDHD', 'Gene', (180, 184)) ('variant', 'Var', (56, 63)) ('SDHD', 'Gene', '6392', (180, 184)) ('SDHB', 'Gene', '6390', (171, 175)) ('SDHD', 'Gene', '6392', (51, 55)) ('SDHB', 'Gene', (171, 175)) ('SDHB', 'Gene', '6390', (42, 46)) ('SDHD', 'Gene', (51, 55)) ('SDHB', 'Gene', (42, 46)) 24257 29978154 In comparison with SDHB and SDHD, mutations in the SDHA subunit have only relatively recently been described in patients with PPGLs and are reported to occur at a markedly lower frequency. ('SDHD', 'Gene', (28, 32)) ('SDHD', 'Gene', '6392', (28, 32)) ('SDHB', 'Gene', '6390', (19, 23)) ('SDHA', 'Gene', (51, 55)) ('patients', 'Species', '9606', (112, 120)) ('SDHB', 'Gene', (19, 23)) ('SDHA', 'Gene', '6389', (51, 55)) ('mutations', 'Var', (34, 43)) ('PPGLs', 'Disease', (126, 131)) 24258 29978154 However, patients with PPGLs harboring SDHA mutations are also reported to have an increased risk of malignancy, leading several experts to advocate cascade genetic testing in first-degree relatives to facilitate downstream surveillance screening. ('patients', 'Species', '9606', (9, 17)) ('SDHA', 'Gene', '6389', (39, 43)) ('malignancy', 'Disease', 'MESH:D009369', (101, 111)) ('mutations', 'Var', (44, 53)) ('malignancy', 'Disease', (101, 111)) ('SDHA', 'Gene', (39, 43)) 24259 29978154 Such an approach appears to be supported by the recent reporting of large PPGL series in which 3% to 7% of PPGL cases harbored SDHA variants, with estimates of disease penetrance in variant carriers ranging from 10% to 30%. ('to 7', 'Species', '1214577', (98, 102)) ('SDHA', 'Gene', '6389', (127, 131)) ('variants', 'Var', (132, 140)) ('harbored', 'Reg', (118, 126)) ('SDHA', 'Gene', (127, 131)) 24260 29978154 Indeed, these approaches have enabled the reevaluation of genetic variants associated with several monogenic disease phenotypes, including cardiomyopathy, prion disease, and, more recently, hereditary endocrine disorders. ('hereditary endocrine disorders', 'Disease', 'MESH:D030342', (190, 220)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (139, 153)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (139, 153)) ('variants', 'Var', (66, 74)) ('hereditary endocrine disorders', 'Disease', (190, 220)) ('endocrine disorders', 'Phenotype', 'HP:0000818', (201, 220)) ('cardiomyopathy', 'Disease', (139, 153)) ('prion disease', 'Disease', 'MESH:D017096', (155, 168)) ('prion disease', 'Disease', (155, 168)) 24261 29978154 Thus, in the current study, we aimed to use the Genome Aggregation Database (GnomAD), which provides high-quality genetic data on 138,632 individuals, to evaluate the pathogenicity and penetrance of germline SDHA variants reported in prior studies of PPGLs. ('SDHA', 'Gene', (208, 212)) ('SDHA', 'Gene', '6389', (208, 212)) ('variants', 'Var', (213, 221)) 24262 29978154 PubMed was used to identify PPGL cases reported in the literature in association with heterozygous germline SDHA variants (up to February 2018). ('SDHA', 'Gene', '6389', (108, 112)) ('variants', 'Var', (113, 121)) ('SDHA', 'Gene', (108, 112)) ('PPGL', 'Gene', (28, 32)) 24265 29978154 The overall frequency of germline SDHA variants in PPGL cases was estimated from cohorts reporting germline SDHA sequencing results for >=50 individuals. ('SDHA', 'Gene', '6389', (108, 112)) ('SDHA', 'Gene', (34, 38)) ('SDHA', 'Gene', (108, 112)) ('PPGL', 'Gene', (51, 55)) ('SDHA', 'Gene', '6389', (34, 38)) ('variants', 'Var', (39, 47)) 24266 29978154 All SDHA missense and loss-of-function (LOF) variants in the GnomAD cohort were identified (accessed July 2017 to January 2018). ('SDHA', 'Gene', (4, 8)) ('missense', 'Var', (9, 17)) ('variants', 'Var', (45, 53)) ('SDHA', 'Gene', '6389', (4, 8)) ('loss-of-function', 'NegReg', (22, 38)) 24267 29978154 LOF variants comprised all single-nucleotide variants predicted to result in nonsense amino acid changes or disruption to canonical donor or acceptor splice sites, as well as small insertions and/or deletions (indels) predicting a frameshift in the encoded protein. ('result', 'Reg', (67, 73)) ('nonsense amino acid', 'MPA', (77, 96)) ('variants', 'Var', (4, 12)) ('donor', 'Species', '9606', (132, 137)) ('deletions', 'Var', (199, 208)) ('frameshift', 'Var', (231, 241)) ('predicting', 'Reg', (218, 228)) ('disruption', 'MPA', (108, 118)) ('single-nucleotide', 'Var', (27, 44)) 24268 29978154 Rare SDHA variants were defined as having an allele frequency (AF) <0.05% (i.e., affecting <=1 in 1000 of the population). ('affecting', 'Reg', (81, 90)) ('variants', 'Var', (10, 18)) ('SDHA', 'Gene', '6389', (5, 9)) ('AF', 'Disease', 'MESH:D001281', (63, 65)) ('SDHA', 'Gene', (5, 9)) 24269 29978154 Each of the GnomAD missense SDHA variants (n = 357) was evaluated using the computational tools SIFT (http://sift.jcvi.org), Provean (http://provean.jcvi.org), and PolyPhen-2 (http://genetics.bwh.harvard.edu/pph2). ('SIFT', 'Disease', 'None', (96, 100)) ('SDHA', 'Gene', (28, 32)) ('SDHA', 'Gene', '6389', (28, 32)) ('variants', 'Var', (33, 41)) ('SIFT', 'Disease', (96, 100)) 24270 29978154 The frequency of the literature-based PPGL SDHA variants, together with those reported as pathogenic/likely pathogenic in the ClinVar database (https://www.ncbi.nlm.nih.gov/clinvar/), was ascertained in the GnomAD data set. ('SDHA', 'Gene', '6389', (43, 47)) ('variants', 'Var', (48, 56)) ('SDHA', 'Gene', (43, 47)) 24271 29978154 Finally, manual visualization of the variant sequences alongside a multiple-sequence alignment file was used to minimize the possibility that SDHA variants represented false-positive artifacts from known pseudogenes (SDHAP1, SDHAP2, SDHAP3). ('SDHAP3', 'Gene', '728609', (233, 239)) ('SDHA', 'Gene', '6389', (142, 146)) ('variants', 'Var', (147, 155)) ('SDHA', 'Gene', (217, 221)) ('SDHA', 'Gene', '6389', (225, 229)) ('SDHAP1', 'Gene', (217, 223)) ('SDHA', 'Gene', (233, 237)) ('SDHA', 'Gene', (142, 146)) ('SDHAP1', 'Gene', '255812', (217, 223)) ('SDHAP3', 'Gene', (233, 239)) ('SDHAP2', 'Gene', '727956', (225, 231)) ('SDHA', 'Gene', '6389', (233, 237)) ('SDHA', 'Gene', (225, 229)) ('SDHA', 'Gene', '6389', (217, 221)) ('SDHAP2', 'Gene', (225, 231)) 24272 29978154 Notably, all rare (AF < 0.05%) missense and LOF SDHA variants observed in the GnomAD database occurred only in the heterozygous state. ('missense', 'Var', (31, 39)) ('LOF', 'NegReg', (44, 47)) ('SDHA', 'Gene', (48, 52)) ('SDHA', 'Gene', '6389', (48, 52)) ('variants', 'Var', (53, 61)) ('AF', 'Disease', 'MESH:D001281', (19, 21)) 24273 29978154 Odds ratios (together with 95% CIs) comparing the frequency of SDHA variants between PPGL and GnomAD cohorts were calculated at http://www.hutchon.net/confidor.htm. ('variants', 'Var', (68, 76)) ('SDHA', 'Gene', '6389', (63, 67)) ('SDHA', 'Gene', (63, 67)) ('PPGL', 'Gene', (85, 89)) 24275 29978154 A total of 95 PPGL index cases with rare heterozygous SDHA variants were identified with equal sex distribution and mean age of 40 years (range, 15 to 81 years) (Table 1, Supplemental Table 1). ('SDHA', 'Gene', '6389', (54, 58)) ('variants', 'Var', (59, 67)) ('SDHA', 'Gene', (54, 58)) 24278 29978154 Among the 95 index cases, 39 different germline heterozygous SDHA variants were observed. ('SDHA', 'Gene', (61, 65)) ('SDHA', 'Gene', '6389', (61, 65)) ('variants', 'Var', (66, 74)) 24279 29978154 No patients were observed to harbor homozygous or compound heterozygous SDHA mutations. ('SDHA', 'Gene', '6389', (72, 76)) ('mutations', 'Var', (77, 86)) ('SDHA', 'Gene', (72, 76)) ('compound heterozygous', 'Var', (50, 71)) ('patients', 'Species', '9606', (3, 11)) 24280 29978154 Overall, 62% of individuals harbored LOF SDHA variants (i.e., nonsense, splice site, or frameshift), with the remainder expressing missense variants. ('SDHA', 'Gene', (41, 45)) ('splice site', 'Var', (72, 83)) ('frameshift', 'Var', (88, 98)) ('LOF', 'NegReg', (37, 40)) ('SDHA', 'Gene', '6389', (41, 45)) ('nonsense', 'Var', (62, 70)) ('missense variants', 'Var', (131, 148)) 24282 29978154 Several additional recurrent SDHA mutations were observed, including both LOF and missense variants, although most individual SDHA variants [28/39 (72%)] were observed in only single PPGL cases (Supplemental Fig. ('SDHA', 'Gene', (126, 130)) ('missense variants', 'Var', (82, 99)) ('SDHA', 'Gene', '6389', (29, 33)) ('SDHA', 'Gene', (29, 33)) ('SDHA', 'Gene', '6389', (126, 130)) ('mutations', 'Var', (34, 43)) 24283 29978154 To establish the frequency of germline SDHA variants in patients with PPGL, we identified cohorts of >50 PPGL index cases in which complete SDHA sequencing was reported (Supplemental Table 2). ('patients', 'Species', '9606', (56, 64)) ('SDHA', 'Gene', (140, 144)) ('SDHA', 'Gene', '6389', (39, 43)) ('SDHA', 'Gene', '6389', (140, 144)) ('SDHA', 'Gene', (39, 43)) ('variants', 'Var', (44, 52)) 24284 29978154 In this combined cohort, 3.6% of all patients with PPGLs harbored a heterozygous SDHA variant, although the frequency varied markedly between series (range, 0% to 7.6%). ('harbored', 'Reg', (57, 65)) ('SDHA', 'Gene', (81, 85)) ('patients', 'Species', '9606', (37, 45)) ('SDHA', 'Gene', '6389', (81, 85)) ('to 7', 'Species', '1214577', (160, 164)) ('variant', 'Var', (86, 93)) 24285 29978154 When evaluated by tumor site, the highest frequency of SDHA variants was observed in individuals with head and neck paraganglioma (overall, 6.3%; range, 0% to 12.1%), whereas the lowest frequency was observed in patients with adrenal pheochromocytoma (overall, 0.9%; range, 0% to 2.1%) (Supplemental Table 2). ('SDHA', 'Gene', '6389', (55, 59)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (226, 250)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (111, 129)) ('paraganglioma', 'Phenotype', 'HP:0002668', (116, 129)) ('tumor', 'Disease', (18, 23)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (234, 250)) ('SDHA', 'Gene', (55, 59)) ('patients', 'Species', '9606', (212, 220)) ('adrenal pheochromocytoma', 'Disease', (226, 250)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (102, 129)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (226, 250)) ('neck paraganglioma', 'Disease', (111, 129)) ('tumor', 'Disease', 'MESH:D009369', (18, 23)) ('variants', 'Var', (60, 68)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 24286 29978154 A high cumulative frequency of SDHA rare coding-region variation was observed in the GnomAD population, with ~1% of individuals in the cohort harboring a rare heterozygous SDHA missense variant (i.e., AF <0.05%), whereas strikingly, ~1 in every 1000 individuals carried a heterozygous LOF SDHA allele. ('SDHA', 'Gene', '6389', (289, 293)) ('SDHA', 'Gene', '6389', (31, 35)) ('SDHA', 'Gene', (172, 176)) ('SDHA', 'Gene', (289, 293)) ('SDHA', 'Gene', (31, 35)) ('AF', 'Disease', 'MESH:D001281', (201, 203)) ('variation', 'Var', (55, 64)) ('SDHA', 'Gene', '6389', (172, 176)) ('LOF', 'NegReg', (285, 288)) ('missense variant', 'Var', (177, 193)) 24287 29978154 Notably, when all GnomAD missense SDHA variants were evaluated using SIFT, Polyphen2, and Provean computational tools (n = 357), >75% were predicted to be potentially damaging (i.e., by one or more programs), with only ~22% predicted benign by each of SIFT, Polyphen-2, and Provean. ('SIFT', 'Disease', (69, 73)) ('SIFT', 'Disease', 'None', (252, 256)) ('SDHA', 'Gene', (34, 38)) ('SIFT', 'Disease', 'None', (69, 73)) ('SIFT', 'Disease', (252, 256)) ('SDHA', 'Gene', '6389', (34, 38)) ('variants', 'Var', (39, 47)) 24288 29978154 Next, the number of expected individuals at risk for PPGLs due to SDHA mutations in the GnomAD cohort was established. ('mutations', 'Var', (71, 80)) ('SDHA', 'Gene', (66, 70)) ('PPGLs', 'Disease', (53, 58)) ('SDHA', 'Gene', '6389', (66, 70)) 24289 29978154 Thus, using the upper and lower bounds of PPGL disease incidence (i.e., 2 to 5/1,000,000/y) and SDHA mutation frequency in PPGL cases (i.e., 1% to 7%), a maximum of ~4 cases (range, 0.4 to 3.8) were predicted (Supplemental Table 3). ('to 7', 'Species', '1214577', (144, 148)) ('SDHA', 'Gene', (96, 100)) ('PPGL', 'Gene', (123, 127)) ('PPGL', 'Disease', (42, 46)) ('SDHA', 'Gene', '6389', (96, 100)) ('mutation', 'Var', (101, 109)) 24290 29978154 However, when the GnomAD data set was examined for individuals harboring PPGL-associated SDHA variants, the number observed was several orders of magnitude higher than predicted, with ~1 in every 750 of the GnomAD cohort carrying a potentially pathogenic variant. ('pathogenic', 'Reg', (244, 254)) ('PPGL-associated', 'Gene', (73, 88)) ('SDHA', 'Gene', (89, 93)) ('variants', 'Var', (94, 102)) ('SDHA', 'Gene', '6389', (89, 93)) 24291 29978154 In total, 15 of 39 (40%) of the different PPGL-associated SDHA alleles were observed in individuals in the GnomAD cohort, of which the p.Arg31Ter occurred at the highest frequency (Fig. ('SDHA', 'Gene', '6389', (58, 62)) ('p.Arg31Ter', 'Var', (135, 145)) ('SDHA', 'Gene', (58, 62)) ('p.Arg31Ter', 'Mutation', 'rs142441643', (135, 145)) ('PPGL-associated', 'Gene', (42, 57)) 24293 29978154 Having observed the high background frequency of individuals harboring potentially pathogenic SDHA variants in the GnomAD population, we next evaluated whether there was a significant excess of SDHA variants in the literature-based PPGL disease cohort relative to the GnomAD controls. ('PPGL', 'Disease', (232, 236)) ('pathogenic', 'Reg', (83, 93)) ('variants', 'Var', (199, 207)) ('variants', 'Var', (99, 107)) ('SDHA', 'Gene', '6389', (94, 98)) ('SDHA', 'Gene', '6389', (194, 198)) ('SDHA', 'Gene', (94, 98)) ('SDHA', 'Gene', (194, 198)) ('excess', 'PosReg', (184, 190)) 24294 29978154 We initially focused these studies on p.Arg31Ter as this PPGL-associated variant was observed at the highest frequency in both disease and control cohorts (Fig. ('p.Arg31Ter', 'Mutation', 'rs142441643', (38, 48)) ('p.Arg31Ter', 'Var', (38, 48)) ('PPGL-associated', 'Gene', (57, 72)) 24295 29978154 Thus, using the combined cohort of 1959 PPGL cases (Supplemental Table 2), a significant excess of the p.Arg31Ter variant was observed in the disease population relative to the GnomAD controls (Supplemental Table 4), whereas a similar excess was demonstrated in individual PPGL cohorts compared with both "Global" and "European" GnomAD populations, although the extent of enrichment varied between series (Supplemental Table 4). ('excess', 'PosReg', (89, 95)) ('p.Arg31Ter', 'Mutation', 'rs142441643', (103, 113)) ('p.Arg31Ter', 'Var', (103, 113)) 24296 29978154 Similarly, a marked excess of LOF SDHA variants was observed in the PPGL cohorts when evaluated cumulatively, despite the high number of individuals harboring LOF alleles in the GnomAD population (Supplemental Table 4). ('SDHA', 'Gene', (34, 38)) ('SDHA', 'Gene', '6389', (34, 38)) ('LOF', 'NegReg', (30, 33)) ('variants', 'Var', (39, 47)) 24298 29978154 Finally, we established variant-level estimates of disease penetrance using the allele frequencies of the respective SDHA variants observed in disease (i.e., literature-based cohort) and control populations (i.e., GnomAD-based cohorts) (Supplemental Tables 5 and 6). ('SDHA', 'Gene', '6389', (117, 121)) ('variants', 'Var', (122, 130)) ('SDHA', 'Gene', (117, 121)) 24299 29978154 For example, the highest estimates of penetrance were observed for the nonsense p.Arg31Ter variant in the PPGL cohort reported by van der Tuin et al. ('p.Arg31Ter', 'Var', (80, 90)) ('PPGL', 'Gene', (106, 110)) ('p.Arg31Ter', 'Mutation', 'rs142441643', (80, 90)) 24302 29978154 Most notably, these studies provide support for the role of SDHA in PPGL tumorigenesis while simultaneously demonstrating that variants in SDHA are likely associated with a much lower disease penetrance than those reported for other components of the succinate dehydrogenase complex (i.e., SDHB/SDHD). ('variants', 'Var', (127, 135)) ('PPGL', 'Disease', (68, 72)) ('tumor', 'Disease', 'MESH:D009369', (73, 78)) ('SDHB', 'Gene', '6390', (290, 294)) ('lower', 'NegReg', (178, 183)) ('disease penetrance', 'MPA', (184, 202)) ('SDHA', 'Gene', '6389', (139, 143)) ('SDHA', 'Gene', '6389', (60, 64)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('SDHB', 'Gene', (290, 294)) ('SDHD', 'Gene', (295, 299)) ('tumor', 'Disease', (73, 78)) ('SDHA', 'Gene', (139, 143)) ('SDHD', 'Gene', '6392', (295, 299)) ('SDHA', 'Gene', (60, 64)) 24305 29978154 Thus, future studies should aim to define the full range of tumor phenotypes associated with SDHA mutation, which likely extend beyond PPGLs and GISTs. ('SDHA', 'Gene', '6389', (93, 97)) ('mutation', 'Var', (98, 106)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('SDHA', 'Gene', (93, 97)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('tumor', 'Disease', (60, 65)) ('GIST', 'Phenotype', 'HP:0100723', (145, 149)) 24307 29978154 Although this may partly reflect the makeup of the specific populations under study (i.e., a high number of p.Arg31Ter cases from the Netherlands), it suggests there may be variant-specific factors that increase tumor risk (e.g., cis-acting genetic elements not captured in the current study or influences of the truncating variant on expression of the wild-type allele). ('influences', 'Reg', (295, 305)) ('variant-specific', 'Var', (173, 189)) ('increase tumor', 'Disease', (203, 217)) ('tumor', 'Phenotype', 'HP:0002664', (212, 217)) ('p.Arg31Ter', 'Mutation', 'rs142441643', (108, 118)) ('increase tumor', 'Disease', 'MESH:D009369', (203, 217)) 24308 29978154 The current analysis only allowed penetrance estimates for SDHA variants observed in both disease and control cohorts, with the most reliable estimates (i.e., narrow CIs) obtained for those observed multiple times. ('SDHA', 'Gene', (59, 63)) ('SDHA', 'Gene', '6389', (59, 63)) ('variants', 'Var', (64, 72)) 24309 29978154 Thus, although 15 of 39 unique PPGL-associated SDHA variants occurred in the GnomAD population, the remaining 24 variants were not observed. ('SDHA', 'Gene', (47, 51)) ('SDHA', 'Gene', '6389', (47, 51)) ('variants', 'Var', (52, 60)) 24310 29978154 However, ~80% (19/24) of these variants were observed in single patients with PPGLs, and the appropriate interpretation of such variants remains challenging. ('variants', 'Var', (31, 39)) ('PPGLs', 'Disease', (78, 83)) ('patients', 'Species', '9606', (64, 72)) ('observed', 'Reg', (45, 53)) 24311 29978154 For example, ~50% of the different nonsynonymous SDHA variants observed in the GnomAD population occurred in single individuals, and consequently, it may not be possible to distinguish disease-causing mutations from those very rare "background" coding variants identified incidentally. ('variants', 'Var', (54, 62)) ('SDHA', 'Gene', (49, 53)) ('SDHA', 'Gene', '6389', (49, 53)) 24312 29978154 Thus, the high background frequency of rare missense SDHA variants observed in GnomAD indicates that some of the PPGL-associated missense variants may have been susceptible to misclassification. ('variants', 'Var', (58, 66)) ('SDHA', 'Gene', (53, 57)) ('PPGL-associated', 'Gene', (113, 128)) ('SDHA', 'Gene', '6389', (53, 57)) 24313 29978154 Furthermore, we demonstrate the limited specificity of the computational tools frequently used in support of variant pathogenicity, with most GnomAD missense SDHA variants predicted to be deleterious by at least one of the prediction programs. ('SDHA', 'Gene', '6389', (158, 162)) ('missense', 'Var', (149, 157)) ('variants', 'Var', (163, 171)) ('SDHA', 'Gene', (158, 162)) 24314 29978154 Thus, any high-volume genetic testing for SDHA should anticipate the identification of rare missense SDHA variants, including those not previously observed in control cohorts, which will remain problematic for interpretation. ('SDHA', 'Gene', '6389', (101, 105)) ('variants', 'Var', (106, 114)) ('SDHA', 'Gene', (42, 46)) ('SDHA', 'Gene', (101, 105)) ('SDHA', 'Gene', '6389', (42, 46)) ('missense', 'Var', (92, 100)) 24316 29978154 However, several of the larger cohorts excluded individuals with mutations in more common PPGL-associated genes, which in turn will overstate the frequency of SDHA variants in unselected PPGL cases (i.e., the true denominator will be underrepresented). ('PPGL', 'Gene', (187, 191)) ('PPGL-associated', 'Gene', (90, 105)) ('SDHA', 'Gene', '6389', (159, 163)) ('variants', 'Var', (164, 172)) ('overstate', 'PosReg', (132, 141)) ('SDHA', 'Gene', (159, 163)) ('mutations', 'Var', (65, 74)) 24317 29978154 Thus, each of these potential limitations will likely overestimate the SDHA mutation frequency in cases, and as a consequence, our low estimates of disease penetrance may in fact be overstated. ('SDHA', 'Gene', '6389', (71, 75)) ('mutation', 'Var', (76, 84)) ('SDHA', 'Gene', (71, 75)) ('overestimate', 'PosReg', (54, 66)) 24410 29293508 Imbalances and collapse of cellular proteostasis capacity, the capacity to buffer against cytotoxic damage and stress, is increasingly implicated in some of the most challenging diseases of our time, including neurodegeneration and cancers. ('neurodegeneration', 'Phenotype', 'HP:0002180', (210, 227)) ('cellular proteostasis capacity', 'MPA', (27, 57)) ('implicated', 'Reg', (135, 145)) ('cancers', 'Disease', 'MESH:D009369', (232, 239)) ('cancers', 'Phenotype', 'HP:0002664', (232, 239)) ('Imbalances', 'Phenotype', 'HP:0002172', (0, 10)) ('cancers', 'Disease', (232, 239)) ('neurodegeneration', 'Disease', (210, 227)) ('cytotoxic damage', 'Disease', (90, 106)) ('neurodegeneration', 'Disease', 'MESH:D019636', (210, 227)) ('Imbalances', 'Var', (0, 10)) ('cancer', 'Phenotype', 'HP:0002664', (232, 238)) ('cytotoxic damage', 'Disease', 'MESH:D064420', (90, 106)) 24418 29293508 Increasing awareness of the fundamental role of the PN in cellular health, its relevance in diseases and potential as a therapeutic target of proteostasis regulator (PR) drugs call for a systematic and systems-level assessment of PN deregulation throughout the human diseasome, towards improved understanding of diseases of proteostasis deficiency and rationalized network-informed approaches to therapeutic proteostasis re-adjustment. ('diseases of proteostasis deficiency', 'Disease', 'MESH:D057165', (312, 347)) ('deregulation', 'Var', (233, 245)) ('human', 'Species', '9606', (261, 266)) ('diseases of proteostasis deficiency', 'Disease', (312, 347)) 24423 29293508 In cancers, mutations and genomic instability inevitably entail alterations of proteome composition and balance that are far less well explored than the consequences of nucleic acid sequence alterations. ('genomic instability', 'Var', (26, 45)) ('proteome composition', 'MPA', (79, 99)) ('mutations', 'Var', (12, 21)) ('cancers', 'Phenotype', 'HP:0002664', (3, 10)) ('cancers', 'Disease', (3, 10)) ('alterations', 'Reg', (64, 75)) ('cancers', 'Disease', 'MESH:D009369', (3, 10)) ('balance', 'MPA', (104, 111)) ('entail', 'Reg', (57, 63)) ('cancer', 'Phenotype', 'HP:0002664', (3, 9)) 24500 29293508 Loss of complex subunits induces cell death and a decline of pluripotency of hESCs and induced pluripotent stem cells (iPSCs). ('complex subunits', 'Protein', (8, 24)) ('death', 'Disease', 'MESH:D003643', (38, 43)) ('decline of pluripotency of hESCs', 'Disease', (50, 82)) ('death', 'Disease', (38, 43)) ('decline of pluripotency of hESCs', 'Disease', 'MESH:D003072', (50, 82)) ('pluripotent', 'MPA', (95, 106)) ('Loss', 'Var', (0, 4)) 24517 29293508 In light of the diverse signatures of differential chaperome deregulation observed across cancers (Fig 2), and motivated by the increasing amount of genomics datasets available for cancers and other human diseases, we aimed at reducing data complexity by extracting quantitative indicators of chaperome differential cancer gene expression alterations, in order to gain insights through reduced complexity while retaining maximum information content. ('cancers', 'Disease', (90, 97)) ('human', 'Species', '9606', (199, 204)) ('cancer', 'Phenotype', 'HP:0002664', (181, 187)) ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('cancer', 'Phenotype', 'HP:0002664', (316, 322)) ('cancer', 'Disease', (181, 187)) ('cancer', 'Disease', 'MESH:D009369', (181, 187)) ('cancers', 'Disease', 'MESH:D009369', (181, 188)) ('cancers', 'Phenotype', 'HP:0002664', (181, 188)) ('cancer', 'Disease', 'MESH:D009369', (90, 96)) ('cancer', 'Disease', 'MESH:D009369', (316, 322)) ('alterations', 'Var', (339, 350)) ('cancers', 'Disease', (181, 188)) ('cancers', 'Phenotype', 'HP:0002664', (90, 97)) ('cancer', 'Disease', (90, 96)) ('cancer', 'Disease', (316, 322)) ('cancers', 'Disease', 'MESH:D009369', (90, 97)) 24552 29293508 Here we exemplify a systematic analysis of differential chaperome gene expression alterations in cancers and neurodegenerative diseases. ('cancers', 'Disease', 'MESH:D009369', (97, 104)) ('cancers', 'Phenotype', 'HP:0002664', (97, 104)) ('cancers', 'Disease', (97, 104)) ('neurodegenerative diseases', 'Disease', 'MESH:D019636', (109, 135)) ('neurodegenerative disease', 'Phenotype', 'HP:0002180', (109, 134)) ('cancer', 'Phenotype', 'HP:0002664', (97, 103)) ('alterations', 'Var', (82, 93)) ('neurodegenerative diseases', 'Disease', (109, 135)) ('differential', 'Protein', (43, 55)) ('neurodegenerative diseases', 'Phenotype', 'HP:0002180', (109, 135)) 24560 29293508 Cancer prevalence, genetic complexity and heterogeneity represent unmet medical need and a significant challenge to personalized medicine, calling for genome-informed therapeutic intervention strategies. ('Cancer', 'Disease', (0, 6)) ('genetic complexity', 'Var', (19, 37)) ('Cancer', 'Disease', 'MESH:D009369', (0, 6)) ('Cancer', 'Phenotype', 'HP:0002664', (0, 6)) 24564 29293508 Here, we focused on the human chaperome, a central PN component, and highly conserved facilitator and safeguard of the healthy folded proteome using an expert-curated human chaperome functional gene ontology comprising an ensemble of 332 chaperone and co-chaperone genes to systematically characterize chaperome alterations in a representative clinically relevant dataset of 22 human solid cancers with matching healthy tissue, corresponding to over 10,000 patient biopsy samples provided through the TCGA consortium. ('cancers', 'Phenotype', 'HP:0002664', (390, 397)) ('human', 'Species', '9606', (24, 29)) ('human', 'Species', '9606', (378, 383)) ('cancers', 'Disease', (390, 397)) ('cancers', 'Disease', 'MESH:D009369', (390, 397)) ('human', 'Species', '9606', (167, 172)) ('patient', 'Species', '9606', (457, 464)) ('cancer', 'Phenotype', 'HP:0002664', (390, 396)) ('alterations', 'Var', (312, 323)) 24572 29293508 The cellular safeguarding functions of chaperones are subverted during oncogenesis to facilitate malignant transformation in light of increased translational flux and aberrant protein species in cancer cells. ('translational flux', 'MPA', (144, 162)) ('aberrant', 'Var', (167, 175)) ('facilitate', 'PosReg', (86, 96)) ('cancer', 'Disease', (195, 201)) ('malignant transformation', 'CPA', (97, 121)) ('cancer', 'Disease', 'MESH:D009369', (195, 201)) ('protein', 'Protein', (176, 183)) ('increased', 'PosReg', (134, 143)) ('cancer', 'Phenotype', 'HP:0002664', (195, 201)) 24582 29293508 Overexpression of the TRiC/CCT subunit CCT8 protects against hsf-1 knockdown in C. elegans, consistent with a regulatory connection between TRiC/CCT and HSF1. ('HSF1', 'Gene', '3297', (153, 157)) ('hsf-1', 'Gene', (61, 66)) ('CCT', 'Gene', '907', (145, 148)) ('TRiC', 'Gene', '153562', (140, 144)) ('TRiC', 'Gene', '153562', (22, 26)) ('TRiC', 'Gene', (22, 26)) ('CCT', 'Gene', (27, 30)) ('knockdown', 'Var', (67, 76)) ('CCT', 'Gene', '907', (39, 42)) ('hsf-1', 'Gene', '173078', (61, 66)) ('C. elegans', 'Species', '6239', (80, 90)) ('TRiC', 'Gene', (140, 144)) ('CCT', 'Gene', (145, 148)) ('CCT', 'Gene', '907', (27, 30)) ('HSF1', 'Gene', (153, 157)) ('CCT', 'Gene', (39, 42)) 24588 29293508 The collective damage caused by oncoprotein expression, compromised DNA repair, genomic instability, reactive oxygen species (ROS), elevated global translation and chaperome overload triggers stress response mechanisms in light of a challenged cellular proteostasis capacity. ('elevated', 'PosReg', (132, 140)) ('compromised', 'Var', (56, 67)) ('oncoprotein', 'Protein', (32, 43)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (101, 124)) ('ROS', 'Chemical', 'MESH:D017382', (126, 129)) ('DNA repair', 'MPA', (68, 78)) ('genomic instability', 'CPA', (80, 99)) ('global translation', 'MPA', (141, 159)) ('reactive oxygen species', 'MPA', (101, 124)) ('triggers', 'Reg', (183, 191)) 24594 29293508 In summary, our study showcases a systematic profiling of the extent of chaperome deregulation, as a central PN functional arm, in a panel of human cancers and three major neurodegenerative disorders, accompanied by a resource of quantitative multi-dimensional maps with reduced complexity. ('cancers', 'Disease', 'MESH:D009369', (148, 155)) ('cancers', 'Phenotype', 'HP:0002664', (148, 155)) ('neurodegenerative disorders', 'Phenotype', 'HP:0002180', (172, 199)) ('neurodegenerative disorders', 'Disease', (172, 199)) ('cancers', 'Disease', (148, 155)) ('functional arm', 'Phenotype', 'HP:0003484', (112, 126)) ('cancer', 'Phenotype', 'HP:0002664', (148, 154)) ('human', 'Species', '9606', (142, 147)) ('chaperome', 'Protein', (72, 81)) ('deregulation', 'Var', (82, 94)) ('neurodegenerative disorders', 'Disease', 'MESH:D019636', (172, 199)) 24880 23487352 In a study by Mann et al, both C-11 HED and F-18 FDG were able to localize more lesions in a more timely fashion than I-131 MIBG. ('I-131 MIBG', 'Chemical', 'MESH:D019797', (118, 128)) ('FDG', 'Chemical', 'MESH:D019788', (49, 52)) ('C-11', 'Var', (31, 35)) ('HED', 'Disease', 'MESH:D053359', (36, 39)) ('F-18', 'Var', (44, 48)) ('HED', 'Disease', (36, 39)) 24885 23154831 Acquired hypermethylation of the P16INK4A promoter in abdominal paraganglioma: relation to adverse tumor phenotype and predisposing mutation Recurrent alterations in promoter methylation of tumor suppressor genes (TSGs) and LINE1 (L1RE1) repeat elements were previously reported in pheochromocytoma and abdominal paraganglioma. ('adverse tumor', 'Disease', (91, 104)) ('tumor', 'Phenotype', 'HP:0002664', (190, 195)) ('P16INK4A', 'Gene', '1029', (33, 41)) ('abdominal paraganglioma', 'Disease', (303, 326)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (54, 77)) ('tumor', 'Disease', (99, 104)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (282, 298)) ('L1RE1', 'Gene', (231, 236)) ('tumor', 'Disease', 'MESH:D009369', (99, 104)) ('abdominal paraganglioma', 'Disease', (54, 77)) ('pheochromocytoma', 'Disease', (282, 298)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (282, 298)) ('L1RE1', 'Gene', '4029', (231, 236)) ('promoter methylation', 'MPA', (166, 186)) ('paraganglioma', 'Phenotype', 'HP:0002668', (313, 326)) ('tumor', 'Disease', (190, 195)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('alterations', 'Var', (151, 162)) ('TSG', 'Gene', '57045', (214, 217)) ('adverse tumor', 'Disease', 'MESH:D064420', (91, 104)) ('P16INK4A', 'Gene', (33, 41)) ('tumor', 'Disease', 'MESH:D009369', (190, 195)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (303, 326)) ('TSG', 'Gene', (214, 217)) ('paraganglioma', 'Phenotype', 'HP:0002668', (64, 77)) 24889 23154831 Z-scores for overall TSG, and individual TSG methylation levels, but not LINE1, were significantly correlated with metastatic disease, paraganglioma, disease predisposition, or outcome. ('TSG', 'Gene', '57045', (41, 44)) ('paraganglioma', 'Disease', 'MESH:D010235', (135, 148)) ('TSG', 'Gene', '57045', (21, 24)) ('TSG', 'Gene', (21, 24)) ('methylation', 'Var', (45, 56)) ('correlated', 'Reg', (99, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (135, 148)) ('TSG', 'Gene', (41, 44)) ('metastatic disease', 'Disease', (115, 133)) ('paraganglioma', 'Disease', (135, 148)) 24890 23154831 Most strikingly, P16 hypermethylation was strongly associated with SDHB mutation as opposed to RET/MEN2, VHL/VHL, or NF1-related disease. ('hypermethylation', 'Var', (21, 37)) ('VHL', 'Disease', (109, 112)) ('NF1', 'Gene', '4763', (117, 120)) ('RET', 'Gene', (95, 98)) ('VHL', 'Disease', 'MESH:D006623', (109, 112)) ('SDHB', 'Gene', '6390', (67, 71)) ('P16', 'Gene', (17, 20)) ('P16', 'Gene', '1029', (17, 20)) ('SDHB', 'Gene', (67, 71)) ('associated', 'Reg', (51, 61)) ('RET', 'Gene', '5979', (95, 98)) ('mutation', 'Var', (72, 80)) ('VHL', 'Disease', 'MESH:D006623', (105, 108)) ('NF1', 'Gene', (117, 120)) ('VHL', 'Disease', (105, 108)) 24891 23154831 Parallel analyses of constitutional, tumor, and metastasis DNA implicate an order of events where constitutional SDHB mutations are followed by TSG hypermethylation and 1p loss in primary tumors, later transferred to metastatic tissue. ('tumor', 'Disease', (188, 193)) ('SDHB', 'Gene', '6390', (113, 117)) ('loss', 'NegReg', (172, 176)) ('tumor', 'Disease', 'MESH:D009369', (37, 42)) ('tumors', 'Phenotype', 'HP:0002664', (188, 194)) ('TSG', 'Gene', '57045', (144, 147)) ('mutations', 'Var', (118, 127)) ('SDHB', 'Gene', (113, 117)) ('tumor', 'Phenotype', 'HP:0002664', (188, 193)) ('primary tumors', 'Disease', (180, 194)) ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('tumor', 'Disease', (37, 42)) ('tumor', 'Disease', 'MESH:D009369', (188, 193)) ('primary tumors', 'Disease', 'MESH:D009369', (180, 194)) ('TSG', 'Gene', (144, 147)) 24892 23154831 In the combined material, P16 hypermethylation was prevalent in SDHB-mutated samples and was associated with short disease-related survival. ('P16', 'Gene', (26, 29)) ('prevalent', 'Reg', (51, 60)) ('SDHB', 'Gene', '6390', (64, 68)) ('P16', 'Gene', '1029', (26, 29)) ('associated', 'Reg', (93, 103)) ('SDHB', 'Gene', (64, 68)) ('hypermethylation', 'Var', (30, 46)) 24893 23154831 The findings verify the previously reported importance of P16 and other TSG hypermethylation in an independent tumor series. ('tumor', 'Disease', 'MESH:D009369', (111, 116)) ('TSG', 'Gene', (72, 75)) ('tumor', 'Phenotype', 'HP:0002664', (111, 116)) ('P16', 'Gene', (58, 61)) ('hypermethylation', 'Var', (76, 92)) ('tumor', 'Disease', (111, 116)) ('TSG', 'Gene', '57045', (72, 75)) ('P16', 'Gene', '1029', (58, 61)) 24894 23154831 Furthermore, a constitutional SDHB mutation is proposed to predispose for an epigenetic tumor phenotype occurring before the emanation of clinically recognized malignancy. ('malignancy', 'Disease', (160, 170)) ('predispose', 'Reg', (59, 69)) ('tumor', 'Disease', 'MESH:D009369', (88, 93)) ('clinical', 'Species', '191496', (138, 146)) ('SDHB', 'Gene', '6390', (30, 34)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('malignancy', 'Disease', 'MESH:D009369', (160, 170)) ('SDHB', 'Gene', (30, 34)) ('mutation', 'Var', (35, 43)) ('tumor', 'Disease', (88, 93)) 24897 23154831 There is an increasing appreciation for the hereditary background of these tumors; indeed, known predisposing gene variations are present in more than 25% of pheochromocytoma and paraganglioma patients. ('patients', 'Species', '9606', (193, 201)) ('tumors', 'Disease', 'MESH:D009369', (75, 81)) ('paraganglioma', 'Phenotype', 'HP:0002668', (179, 192)) ('variations', 'Var', (115, 125)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (158, 192)) ('tumors', 'Phenotype', 'HP:0002664', (75, 81)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (158, 174)) ('tumors', 'Disease', (75, 81)) 24900 23154831 Others and we have previously shown that promoter hypermethylation in tumor suppressor genes (TSGs) is a prominent feature of pheochromocytoma and paraganglioma. ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('TSG', 'Gene', (94, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (147, 160)) ('tumor', 'Disease', (70, 75)) ('TSG', 'Gene', '57045', (94, 97)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (126, 160)) ('promoter hypermethylation', 'Var', (41, 66)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (126, 142)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) 24902 23154831 Knocking out the mouse equivalent of the INK4A locus, Ink4a/Arf, causes a substantial increase in the severity of the disease phenotype in pheochromocytoma-prone mice. ('INK4A', 'Gene', (41, 46)) ('increase', 'PosReg', (86, 94)) ('mouse', 'Species', '10090', (17, 22)) ('pheochromocytoma', 'Disease', (139, 155)) ('Ink4a/Arf', 'Gene', (54, 63)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (139, 155)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (139, 155)) ('INK4A', 'Gene', '12578', (41, 46)) ('mice', 'Species', '10090', (162, 166)) ('Ink4a/Arf', 'Gene', '12578', (54, 63)) ('Knocking', 'Var', (0, 8)) 24903 23154831 While this region is rarely lost in human pheochromocytomas and paragangliomas, we found that hypermethylation of the residing P16 gene is strongly associated with malignancy - 4/5 cases with P16 hypermethylation were classified as malignant, while only 1/44 tumors without evidence of malignancy harbored P16 hypermethylation. ('P16', 'Gene', (192, 195)) ('malignancy', 'Disease', (286, 296)) ('P16', 'Gene', '1029', (127, 130)) ('tumors', 'Phenotype', 'HP:0002664', (259, 265)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (42, 59)) ('malignancy', 'Disease', 'MESH:D009369', (164, 174)) ('paragangliomas', 'Phenotype', 'HP:0002668', (64, 78)) ('P16', 'Gene', (127, 130)) ('tumor', 'Phenotype', 'HP:0002664', (259, 264)) ('tumors', 'Disease', (259, 265)) ('hypermethylation', 'Var', (196, 212)) ('malignancy', 'Disease', (164, 174)) ('hypermethylation', 'Var', (94, 110)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (42, 78)) ('tumors', 'Disease', 'MESH:D009369', (259, 265)) ('P16', 'Gene', '1029', (306, 309)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (42, 58)) ('malignancy', 'Disease', 'MESH:D009369', (286, 296)) ('P16', 'Gene', '1029', (192, 195)) ('associated with', 'Reg', (148, 163)) ('P16', 'Gene', (306, 309)) ('human', 'Species', '9606', (36, 41)) ('paraganglioma', 'Phenotype', 'HP:0002668', (64, 77)) 24906 23154831 Interestingly, CIMP was associated with malignancy (4/5 cases with CIMP had developed metastases) and with SDHB mutation (SDHB mutation was detected in 4/5 cases with CIMP, and). ('metastases', 'Disease', (86, 96)) ('associated', 'Reg', (24, 34)) ('SDHB', 'Gene', (107, 111)) ('mutation', 'Var', (112, 120)) ('metastases', 'Disease', 'MESH:D009362', (86, 96)) ('CIMP', 'Chemical', '-', (67, 71)) ('CIMP', 'Chemical', '-', (15, 19)) ('SDHB', 'Gene', '6390', (122, 126)) ('CIMP', 'Chemical', '-', (167, 171)) ('SDHB', 'Gene', (122, 126)) ('malignancy', 'Disease', 'MESH:D009369', (40, 50)) ('SDHB', 'Gene', '6390', (107, 111)) ('CIMP', 'Disease', (15, 19)) ('malignancy', 'Disease', (40, 50)) 24909 23154831 Notably and as our previous findings indicated a presence of CIMP in strong association with malignant paragangliomas with SDHB mutation, the present panel included additional cases with known mutation in predisposing genes and/or associated syndromes, paragangliomas, and metastatic disease. ('paragangliomas', 'Disease', (103, 117)) ('paragangliomas', 'Disease', 'MESH:D010235', (103, 117)) ('paragangliomas', 'Phenotype', 'HP:0002668', (103, 117)) ('malignant paragangliomas', 'Disease', (93, 117)) ('association', 'Interaction', (76, 87)) ('CIMP', 'Chemical', '-', (61, 65)) ('SDHB', 'Gene', '6390', (123, 127)) ('SDHB', 'Gene', (123, 127)) ('paraganglioma', 'Phenotype', 'HP:0002668', (103, 116)) ('paragangliomas', 'Disease', 'MESH:D010235', (253, 267)) ('mutation', 'Var', (128, 136)) ('paragangliomas', 'Disease', (253, 267)) ('paraganglioma', 'Phenotype', 'HP:0002668', (253, 266)) ('paragangliomas', 'Phenotype', 'HP:0002668', (253, 267)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (93, 117)) 24911 23154831 Our aims were to i) verify the occurrence of TSG hypermethylation in an independent tumor series; ii) assess the temporal relation of methylation to tumor development; iii) determine the chronological relation to genetic alterations; iv) evaluate the relation to mutations in predisposing genes; and v) assess associations to metastatic disease. ('TSG', 'Gene', (45, 48)) ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('metastatic disease', 'Disease', (326, 344)) ('tumor', 'Disease', 'MESH:D009369', (149, 154)) ('hypermethylation', 'Var', (49, 65)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('TSG', 'Gene', '57045', (45, 48)) ('tumor', 'Phenotype', 'HP:0002664', (149, 154)) ('tumor', 'Disease', (84, 89)) ('associations', 'Interaction', (310, 322)) ('tumor', 'Disease', (149, 154)) 24915 23154831 Tumor series A (Tables 1 and 2) constituted of 38 primary tumors and two metastases was analyzed for promoter methylation and SDHB/D mutation in this study (Table 2). ('primary tumors', 'Disease', 'MESH:D009369', (50, 64)) ('tumor', 'Phenotype', 'HP:0002664', (58, 63)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('mutation', 'Var', (133, 141)) ('metastases', 'Disease', (73, 83)) ('tumors', 'Phenotype', 'HP:0002664', (58, 64)) ('primary tumors', 'Disease', (50, 64)) ('metastases', 'Disease', 'MESH:D009362', (73, 83)) ('SDHB', 'Gene', '6390', (126, 130)) ('SDHB', 'Gene', (126, 130)) 24924 23154831 In addition, non-tumorous DNA was sequenced in five cases in Series B with previously reported SDHB tumor mutations to assess whether mutations were constitutional or not. ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('SDHB tumor', 'Disease', 'MESH:D009369', (95, 105)) ('SDHB tumor', 'Disease', (95, 105)) ('mutations', 'Var', (106, 115)) ('tumorous', 'Disease', 'MESH:D009369', (17, 25)) ('tumorous', 'Disease', (17, 25)) 24926 23154831 Cases with a hereditary form of the disease were identified by mutation screening of constitutional DNA or in some cases based on the clinical presentation as reported in and. ('constitutional DNA', 'Disease', (85, 103)) ('clinical', 'Species', '191496', (134, 142)) ('mutation screening', 'Var', (63, 81)) 24927 23154831 In addition, cases with SDHB mutations were identified by sequencing of tumor DNA and by verification of constitutional mutations in samples from blood or normal tissues. ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('tumor', 'Disease', (72, 77)) ('mutations', 'Var', (29, 38)) ('SDHB', 'Gene', '6390', (24, 28)) ('SDHB', 'Gene', (24, 28)) ('tumor', 'Disease', 'MESH:D009369', (72, 77)) 24942 23154831 exhibited increased MetI for three or more genes (AG-9, -14, and -20; Table 2). ('MetI', 'Chemical', '-', (20, 24)) ('MetI', 'Var', (20, 24)) ('increased', 'PosReg', (10, 19)) 24943 23154831 Hypermethylation with MetI above cutoff was observed for all genes except NORE1A, and in addition, some tumors exhibited increased methylation at >=1 CpG without raising the MetI above cutoff (Table 2). ('NORE1A', 'Gene', (74, 80)) ('MetI', 'Var', (22, 26)) ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('increased', 'PosReg', (121, 130)) ('Hypermethylation', 'Var', (0, 16)) ('tumors', 'Phenotype', 'HP:0002664', (104, 110)) ('MetI', 'Chemical', '-', (22, 26)) ('MetI', 'Chemical', '-', (174, 178)) ('tumors', 'Disease', (104, 110)) ('NORE1A', 'Gene', '83593', (74, 80)) ('tumors', 'Disease', 'MESH:D009369', (104, 110)) ('methylation', 'MPA', (131, 142)) 24944 23154831 Increased MetI was identified in three primary tumors for DCR2, three tumors for CDH1, five tumors for P16, one tumor for RARB, and five tumors for RASSF1A. ('tumors', 'Disease', (137, 143)) ('tumor', 'Disease', 'MESH:D009369', (92, 97)) ('RASSF1A', 'Gene', (148, 155)) ('tumors', 'Phenotype', 'HP:0002664', (70, 76)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('MetI', 'Chemical', '-', (10, 14)) ('P16', 'Gene', '1029', (103, 106)) ('tumors', 'Phenotype', 'HP:0002664', (92, 98)) ('tumors', 'Disease', (47, 53)) ('DCR2', 'Gene', (58, 62)) ('tumors', 'Disease', 'MESH:D009369', (137, 143)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('P16', 'Gene', (103, 106)) ('tumors', 'Disease', (70, 76)) ('primary tumors', 'Disease', (39, 53)) ('RARB', 'Gene', (122, 126)) ('tumor', 'Disease', (112, 117)) ('tumors', 'Disease', (92, 98)) ('RARB', 'Gene', '5915', (122, 126)) ('tumors', 'Disease', 'MESH:D009369', (47, 53)) ('tumor', 'Disease', (137, 142)) ('tumor', 'Disease', 'MESH:D009369', (112, 117)) ('MetI', 'Var', (10, 14)) ('tumors', 'Disease', 'MESH:D009369', (70, 76)) ('tumor', 'Disease', 'MESH:D009369', (137, 142)) ('primary tumors', 'Disease', 'MESH:D009369', (39, 53)) ('tumors', 'Disease', 'MESH:D009369', (92, 98)) ('tumor', 'Disease', (47, 52)) ('CDH1', 'Gene', '999', (81, 85)) ('tumors', 'Phenotype', 'HP:0002664', (137, 143)) ('tumor', 'Disease', (70, 75)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) ('DCR2', 'Gene', '8793', (58, 62)) ('tumor', 'Disease', 'MESH:D009369', (47, 52)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('tumor', 'Disease', (92, 97)) ('CDH1', 'Gene', (81, 85)) ('tumors', 'Phenotype', 'HP:0002664', (47, 53)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) ('RASSF1A', 'Gene', '11186', (148, 155)) 24950 23154831 Importantly, higher mean Z-score was significantly associated with mutation (SDHB), tumor type (paraganglioma), metastatic disease, death of disease, and CIMP (Fig. ('paraganglioma', 'Disease', 'MESH:D010235', (96, 109)) ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('metastatic disease', 'Disease', (112, 130)) ('mutation', 'Var', (67, 75)) ('Z-score', 'MPA', (25, 32)) ('death of disease', 'Disease', (132, 148)) ('CIMP', 'Disease', (154, 158)) ('SDHB', 'Gene', '6390', (77, 81)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('higher', 'PosReg', (13, 19)) ('tumor', 'Disease', (84, 89)) ('SDHB', 'Gene', (77, 81)) ('paraganglioma', 'Disease', (96, 109)) ('CIMP', 'Chemical', '-', (154, 158)) ('death of disease', 'Disease', 'MESH:D003643', (132, 148)) 24951 23154831 High Z-scores for individual TSG promoters were also significantly associated with different clinical and genetic features including SDHB mutation (all save NORE1A), paraganglioma tumor type (all), metastasis (all), and death of disease (all except RARB, with RASSF1A being highly significant) (Table 3). ('SDHB', 'Gene', '6390', (133, 137)) ('metastasis', 'CPA', (198, 208)) ('TSG', 'Gene', (29, 32)) ('paraganglioma tumor', 'Disease', (166, 185)) ('mutation', 'Var', (138, 146)) ('paraganglioma', 'Phenotype', 'HP:0002668', (166, 179)) ('tumor', 'Phenotype', 'HP:0002664', (180, 185)) ('RARB', 'Gene', (249, 253)) ('NORE1A', 'Gene', (157, 163)) ('RARB', 'Gene', '5915', (249, 253)) ('SDHB', 'Gene', (133, 137)) ('clinical', 'Species', '191496', (93, 101)) ('associated', 'Reg', (67, 77)) ('death of disease', 'Disease', (220, 236)) ('paraganglioma tumor', 'Disease', 'MESH:D010235', (166, 185)) ('RASSF1A', 'Gene', '11186', (260, 267)) ('death of disease', 'Disease', 'MESH:D003643', (220, 236)) ('NORE1A', 'Gene', '83593', (157, 163)) ('RASSF1A', 'Gene', (260, 267)) ('TSG', 'Gene', '57045', (29, 32)) 24952 23154831 3 illustrates the patterns of TSG hypermethylation in cases with different forms of heritable disease. ('TSG', 'Gene', (30, 33)) ('hypermethylation', 'Var', (34, 50)) ('TSG', 'Gene', '57045', (30, 33)) 24958 23154831 Taken together, the combined observations in Series A+B strongly support an association between SDHB mutation and TSG hypermethylation, with P16 being the most frequently involved. ('TSG', 'Gene', (114, 117)) ('hypermethylation', 'Var', (118, 134)) ('P16', 'Gene', (141, 144)) ('TSG', 'Gene', '57045', (114, 117)) ('SDHB', 'Gene', '6390', (96, 100)) ('P16', 'Gene', '1029', (141, 144)) ('SDHB', 'Gene', (96, 100)) ('mutation', 'Var', (101, 109)) 24964 23154831 Hence, SDHB mutations were present constitutionally, while TSG hypermethylation and CIMP were acquired events first observed in primary tumors together with loss of chromosomal region 1p encompassing the SDHB locus, and subsequently retained to metastatic tissue. ('TSG', 'Gene', (59, 62)) ('SDHB', 'Gene', (7, 11)) ('tumors', 'Phenotype', 'HP:0002664', (136, 142)) ('SDHB', 'Gene', '6390', (204, 208)) ('mutations', 'Var', (12, 21)) ('SDHB', 'Gene', (204, 208)) ('CIMP', 'Chemical', '-', (84, 88)) ('TSG', 'Gene', '57045', (59, 62)) ('primary tumors', 'Disease', (128, 142)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('SDHB', 'Gene', '6390', (7, 11)) ('primary tumors', 'Disease', 'MESH:D009369', (128, 142)) ('loss', 'NegReg', (157, 161)) 24965 23154831 MetI levels for LINE1 repeat elements varied from 46 to 80% in the 39 primary tumors in Series A, and the values at the individual CpGs ranged from 37 to 83% (Table 2). ('LINE1', 'Var', (16, 21)) ('tumors', 'Phenotype', 'HP:0002664', (78, 84)) ('primary tumors', 'Disease', (70, 84)) ('tumor', 'Phenotype', 'HP:0002664', (78, 83)) ('MetI', 'MPA', (0, 4)) ('MetI', 'Chemical', '-', (0, 4)) ('primary tumors', 'Disease', 'MESH:D009369', (70, 84)) 24973 23154831 Indeed, individual TSG hypermethylation was salient in paragangliomas, being especially prominent in tumors classified as malignant. ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('paragangliomas', 'Disease', (55, 69)) ('paragangliomas', 'Disease', 'MESH:D010235', (55, 69)) ('TSG', 'Gene', (19, 22)) ('paraganglioma', 'Phenotype', 'HP:0002668', (55, 68)) ('paragangliomas', 'Phenotype', 'HP:0002668', (55, 69)) ('hypermethylation', 'Var', (23, 39)) ('TSG', 'Gene', '57045', (19, 22)) ('tumors', 'Disease', (101, 107)) 24974 23154831 In the combined Series A+B, 7/11 metastasized paragangliomas exhibited MetI above cutoff in two or more of the assessed TSG promoters (Fig. ('paragangliomas', 'Disease', (46, 60)) ('MetI above cutoff', 'Var', (71, 88)) ('TSG', 'Gene', '57045', (120, 123)) ('MetI', 'Chemical', '-', (71, 75)) ('paragangliomas', 'Disease', 'MESH:D010235', (46, 60)) ('paraganglioma', 'Phenotype', 'HP:0002668', (46, 59)) ('exhibited', 'Reg', (61, 70)) ('TSG', 'Gene', (120, 123)) ('paragangliomas', 'Phenotype', 'HP:0002668', (46, 60)) 24975 23154831 Further, 4/12 paragangliomas without metastases carried SDHB mutations - strongly linked to malignant behavior and metastatic potential - three of which also exhibited MetI above cutoff for two or more TSGs (Fig. ('SDHB', 'Gene', '6390', (56, 60)) ('SDHB', 'Gene', (56, 60)) ('malignant behavior', 'CPA', (92, 110)) ('mutations -', 'Var', (61, 72)) ('TSG', 'Gene', '57045', (202, 205)) ('metastases', 'Disease', (37, 47)) ('paraganglioma', 'Phenotype', 'HP:0002668', (14, 27)) ('linked to', 'Reg', (82, 91)) ('metastatic potential -', 'CPA', (115, 137)) ('paragangliomas', 'Disease', (14, 28)) ('paragangliomas', 'Disease', 'MESH:D010235', (14, 28)) ('paragangliomas', 'Phenotype', 'HP:0002668', (14, 28)) ('MetI', 'Chemical', '-', (168, 172)) ('metastases', 'Disease', 'MESH:D009362', (37, 47)) ('TSG', 'Gene', (202, 205)) 24976 23154831 In contrast, TSG hypermethylation proved infrequent in pheochromocytomas; 5/54 cases featured MetI above cutoff in a single TSG each (Fig. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (55, 72)) ('TSG', 'Gene', (124, 127)) ('TSG', 'Gene', '57045', (13, 16)) ('TSG', 'Gene', '57045', (124, 127)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (55, 72)) ('pheochromocytomas', 'Disease', (55, 72)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (55, 71)) ('TSG', 'Gene', (13, 16)) ('MetI', 'Var', (94, 98)) ('MetI', 'Chemical', '-', (94, 98)) 24977 23154831 The most frequently hypermethylated genes were DCR2 (eight tumors), P16 (11 tumors (AG-6 exhibited elevated MetI, but was nonetheless. ('P16', 'Gene', (68, 71)) ('P16', 'Gene', '1029', (68, 71)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('DCR2', 'Gene', (47, 51)) ('tumors', 'Disease', (76, 82)) ('tumors', 'Disease', (59, 65)) ('elevated', 'PosReg', (99, 107)) ('tumors', 'Disease', 'MESH:D009369', (59, 65)) ('tumors', 'Disease', 'MESH:D009369', (76, 82)) ('hypermethylated', 'Var', (20, 35)) ('MetI', 'MPA', (108, 112)) ('tumors', 'Phenotype', 'HP:0002664', (59, 65)) ('MetI', 'Chemical', '-', (108, 112)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) ('DCR2', 'Gene', '8793', (47, 51)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) 24978 23154831 Five percentage points too low to reach cutoff)), and RASSF1A (nine tumors), indicating that epigenetic modifications of these genes is an important facet of malignancy in paragangliomas. ('RASSF1A', 'Gene', '11186', (54, 61)) ('malignancy in paragangliomas', 'Disease', 'MESH:C565335', (158, 186)) ('tumors', 'Disease', (68, 74)) ('tumors', 'Disease', 'MESH:D009369', (68, 74)) ('tumors', 'Phenotype', 'HP:0002664', (68, 74)) ('paraganglioma', 'Phenotype', 'HP:0002668', (172, 185)) ('paragangliomas', 'Phenotype', 'HP:0002668', (172, 186)) ('epigenetic modifications', 'Var', (93, 117)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('RASSF1A', 'Gene', (54, 61)) ('malignancy in paragangliomas', 'Disease', (158, 186)) 24979 23154831 We found a very strong association between SDHB mutation and hypermethylation of several TSGs in the novel Series A (Fig. ('SDHB', 'Gene', '6390', (43, 47)) ('hypermethylation', 'MPA', (61, 77)) ('TSG', 'Gene', (89, 92)) ('mutation', 'Var', (48, 56)) ('SDHB', 'Gene', (43, 47)) ('TSG', 'Gene', '57045', (89, 92)) 24981 23154831 2, grouped by syndrome/mutation, further highlight the over-representation of TSG CpG methylation coinciding with SDHB mutation compared with other genetic variants. ('mutation', 'Var', (119, 127)) ('over-representation', 'PosReg', (55, 74)) ('SDHB', 'Gene', '6390', (114, 118)) ('SDHB', 'Gene', (114, 118)) ('TSG', 'Gene', (78, 81)) ('TSG', 'Gene', '57045', (78, 81)) 24982 23154831 P16 hypermethylation was most frequently seen with and was unequivocally associated with SDHB mutation (Fig. ('SDHB', 'Gene', (89, 93)) ('P16', 'Gene', (0, 3)) ('associated', 'Reg', (73, 83)) ('SDHB', 'Gene', '6390', (89, 93)) ('P16', 'Gene', '1029', (0, 3)) ('mutation', 'Var', (94, 102)) ('hypermethylation', 'Var', (4, 20)) 24983 23154831 Furthermore, for the paraganglioma AG-6 with SDHB mutation, the MetI for P16 was elevated and close to the nominal 10% cutoff value, and hypermethylation above cutoff was observed for individual CpGs. ('paraganglioma', 'Disease', 'MESH:D010235', (21, 34)) ('MetI', 'MPA', (64, 68)) ('MetI', 'Chemical', '-', (64, 68)) ('elevated', 'PosReg', (81, 89)) ('paraganglioma', 'Phenotype', 'HP:0002668', (21, 34)) ('P16', 'Gene', (73, 76)) ('SDHB', 'Gene', '6390', (45, 49)) ('paraganglioma', 'Disease', (21, 34)) ('SDHB', 'Gene', (45, 49)) ('P16', 'Gene', '1029', (73, 76)) ('mutation', 'Var', (50, 58)) 24986 23154831 By contrast, MetI levels for P16 were very low (1 or 2%) in tumors without detectable SDHB mutation. ('P16', 'Gene', (29, 32)) ('MetI levels', 'MPA', (13, 24)) ('SDHB', 'Gene', (86, 90)) ('mutation', 'Var', (91, 99)) ('P16', 'Gene', '1029', (29, 32)) ('MetI', 'Chemical', '-', (13, 17)) ('tumors', 'Disease', 'MESH:D009369', (60, 66)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('tumors', 'Phenotype', 'HP:0002664', (60, 66)) ('SDHB', 'Gene', '6390', (86, 90)) ('tumors', 'Disease', (60, 66)) 24987 23154831 Figure 3 further illustrates that in the combined Series A+B, concerted epigenetic events occur in relation to SDHB mutation but are not observed in association with other predisposing syndromes. ('mutation', 'Var', (116, 124)) ('SDHB', 'Gene', (111, 115)) ('SDHB', 'Gene', '6390', (111, 115)) 24988 23154831 Survival analyses of combined Series A+B demonstrated significantly shorter survival in patients with primary tumors that displayed P16 MetI >10% compared with those with MetI below cutoff (Fig. ('primary tumors', 'Disease', 'MESH:D009369', (102, 116)) ('MetI >10%', 'Var', (136, 145)) ('survival', 'MPA', (76, 84)) ('patients', 'Species', '9606', (88, 96)) ('MetI', 'Chemical', '-', (136, 140)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('P16', 'Gene', '1029', (132, 135)) ('MetI', 'Chemical', '-', (171, 175)) ('tumors', 'Phenotype', 'HP:0002664', (110, 116)) ('P16', 'Gene', (132, 135)) ('primary tumors', 'Disease', (102, 116)) ('shorter', 'NegReg', (68, 75)) 24989 23154831 In Series A as well as in combined Series A+B, hypermethylation of TSGs was found in association with paraganglioma tumor type, development of metastases, and mutation of the predisposing gene SDHB. ('SDHB', 'Gene', '6390', (193, 197)) ('metastases', 'Disease', 'MESH:D009362', (143, 153)) ('paraganglioma', 'Phenotype', 'HP:0002668', (102, 115)) ('TSG', 'Gene', (67, 70)) ('SDHB', 'Gene', (193, 197)) ('association', 'Reg', (85, 96)) ('TSG', 'Gene', '57045', (67, 70)) ('mutation', 'Var', (159, 167)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('paraganglioma tumor', 'Disease', 'MESH:D010235', (102, 121)) ('metastases', 'Disease', (143, 153)) ('hypermethylation', 'Var', (47, 63)) ('paraganglioma tumor', 'Disease', (102, 121)) 24990 23154831 While metastasis and SDHB mutations are known to be correlated, the question arises whether hypermethylation also occurs in SDHB wild-type metastatic tumors. ('SDHB', 'Gene', (124, 128)) ('tumors', 'Disease', (150, 156)) ('tumors', 'Disease', 'MESH:D009369', (150, 156)) ('tumors', 'Phenotype', 'HP:0002664', (150, 156)) ('SDHB', 'Gene', '6390', (21, 25)) ('mutations', 'Var', (26, 35)) ('tumor', 'Phenotype', 'HP:0002664', (150, 155)) ('SDHB', 'Gene', (21, 25)) ('SDHB', 'Gene', '6390', (124, 128)) 24992 23154831 Among these, only two paragangliomas had hypermethylation. ('hypermethylation', 'Var', (41, 57)) ('paragangliomas', 'Disease', 'MESH:D010235', (22, 36)) ('paragangliomas', 'Disease', (22, 36)) ('paraganglioma', 'Phenotype', 'HP:0002668', (22, 35)) ('paragangliomas', 'Phenotype', 'HP:0002668', (22, 36)) 24993 23154831 Significant methylation in RASSF1A alone was detected when analyzing TSG methylation in all metastatic tumors without apparent SDHB involvement (P>=0.02). ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('RASSF1A', 'Gene', (27, 34)) ('tumors', 'Phenotype', 'HP:0002664', (103, 109)) ('TSG', 'Gene', '57045', (69, 72)) ('SDHB', 'Gene', '6390', (127, 131)) ('tumors', 'Disease', (103, 109)) ('tumors', 'Disease', 'MESH:D009369', (103, 109)) ('SDHB', 'Gene', (127, 131)) ('RASSF1A', 'Gene', '11186', (27, 34)) ('methylation', 'Var', (12, 23)) ('TSG', 'Gene', (69, 72)) 24994 23154831 Hence, increased TSG methylation does not appear to be frequently involved in sporadic, malignant cases or in conjunction with other predisposing mutations. ('TSG', 'Gene', (17, 20)) ('increased', 'PosReg', (7, 16)) ('TSG', 'Gene', '57045', (17, 20)) ('methylation', 'Var', (21, 32)) 24995 23154831 However, it is presently unknown whether metastatic tumors with mutations other than SDHB harbor TSG methylation. ('harbor', 'Reg', (90, 96)) ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('TSG', 'Gene', (97, 100)) ('tumors', 'Phenotype', 'HP:0002664', (52, 58)) ('tumors', 'Disease', (52, 58)) ('tumors', 'Disease', 'MESH:D009369', (52, 58)) ('SDHB', 'Gene', '6390', (85, 89)) ('TSG', 'Gene', '57045', (97, 100)) ('SDHB', 'Gene', (85, 89)) ('mutations', 'Var', (64, 73)) 24997 23154831 SDHB mutations are known to be frequently associated with malignant forms of paraganglioma, raising questions about causes and consequences in relation to these abnormalities and their clinical effects. ('clinical', 'Species', '191496', (185, 193)) ('paraganglioma', 'Phenotype', 'HP:0002668', (77, 90)) ('associated', 'Reg', (42, 52)) ('paraganglioma', 'Disease', (77, 90)) ('mutations', 'Var', (5, 14)) ('SDHB', 'Gene', '6390', (0, 4)) ('paraganglioma', 'Disease', 'MESH:D010235', (77, 90)) ('SDHB', 'Gene', (0, 4)) 24998 23154831 In four cases with constitutional SDHB mutations in Series B, TSG hypermethylation was absent in constitutional DNA - indicating that the TSG hypermethylation is tumor-specific - and first observed in primary tumors in conjunction with loss of 1p encompassing the SDHB gene locus (Fig. ('SDHB', 'Gene', (264, 268)) ('TSG', 'Gene', (138, 141)) ('tumor', 'Disease', (209, 214)) ('tumor', 'Phenotype', 'HP:0002664', (162, 167)) ('TSG', 'Gene', '57045', (62, 65)) ('tumors', 'Phenotype', 'HP:0002664', (209, 215)) ('tumor', 'Disease', (162, 167)) ('TSG', 'Gene', '57045', (138, 141)) ('mutations', 'Var', (39, 48)) ('primary tumors', 'Disease', (201, 215)) ('SDHB', 'Gene', '6390', (34, 38)) ('tumor', 'Disease', 'MESH:D009369', (209, 214)) ('SDHB', 'Gene', (34, 38)) ('SDHB', 'Gene', '6390', (264, 268)) ('TSG', 'Gene', (62, 65)) ('primary tumors', 'Disease', 'MESH:D009369', (201, 215)) ('tumor', 'Phenotype', 'HP:0002664', (209, 214)) ('tumor', 'Disease', 'MESH:D009369', (162, 167)) 24999 23154831 Furthermore, acquired TSG hypermethylation was observed in four malignant primary paragangliomas before the development of metastasis and one case where metastasis had not developed before surgery (BS-10; Fig. ('paragangliomas', 'Phenotype', 'HP:0002668', (82, 96)) ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('TSG', 'Gene', (22, 25)) ('observed', 'Reg', (47, 55)) ('hypermethylation', 'Var', (26, 42)) ('TSG', 'Gene', '57045', (22, 25)) ('paragangliomas', 'Disease', 'MESH:D010235', (82, 96)) ('paragangliomas', 'Disease', (82, 96)) 25000 23154831 Importantly, these findings implicate that TSG hypermethylation is not a secondary consequence of a malignant tumor state. ('malignant tumor', 'Disease', (100, 115)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('malignant tumor', 'Disease', 'MESH:D018198', (100, 115)) ('TSG', 'Gene', (43, 46)) ('TSG', 'Gene', '57045', (43, 46)) ('hypermethylation', 'Var', (47, 63)) 25002 23154831 However, it is a theoretical possibility that heterozygous SDHB inactivation could lead to TSG hypermethylation in cancer progenitor cells of the target tissue and subsequently be selected for at tumor transformation. ('inactivation', 'Var', (64, 76)) ('cancer', 'Disease', (115, 121)) ('tumor', 'Disease', (196, 201)) ('hypermethylation', 'MPA', (95, 111)) ('cancer', 'Phenotype', 'HP:0002664', (115, 121)) ('TSG', 'Gene', (91, 94)) ('cancer', 'Disease', 'MESH:D009369', (115, 121)) ('SDHB', 'Gene', '6390', (59, 63)) ('lead to', 'Reg', (83, 90)) ('SDHB', 'Gene', (59, 63)) ('tumor', 'Disease', 'MESH:D009369', (196, 201)) ('TSG', 'Gene', '57045', (91, 94)) ('tumor', 'Phenotype', 'HP:0002664', (196, 201)) 25003 23154831 The data presented here strongly indicate that SDHB inactivation and TSG CpG hypermethylation are associated; an attractive possibility being that SDHB inactivation in fact causes TSG hypermethylation. ('TSG', 'Gene', (180, 183)) ('TSG', 'Gene', '57045', (69, 72)) ('SDHB', 'Gene', '6390', (47, 51)) ('SDHB', 'Gene', (47, 51)) ('inactivation', 'Var', (152, 164)) ('SDHB', 'Gene', '6390', (147, 151)) ('SDHB', 'Gene', (147, 151)) ('TSG', 'Gene', '57045', (180, 183)) ('causes', 'Reg', (173, 179)) ('TSG', 'Gene', (69, 72)) 25009 23154831 This specific methylative inactivation of apoptotic and antiproliferative genes might instead mirror a physiological attempt to counter the state of pseudo-hypoxia, induced by SDH dysfunction and described in and. ('hypoxia', 'Disease', (156, 163)) ('methylative', 'Var', (14, 25)) ('hypoxia', 'Disease', 'MESH:D000860', (156, 163)) ('SDH dysfunction', 'Disease', (176, 191)) ('SDH dysfunction', 'Disease', 'MESH:D006331', (176, 191)) ('inactivation', 'NegReg', (26, 38)) 25010 23154831 Indeed, recent immunohistochemical studies have shown that tumors from patients with SDHB, SDHC, and SDHD mutations lack SDHB immunoreactivity and that SDH activity is abolished in SDHB- and SDHD-mutated cases but not in connection with SDHC. ('lack', 'NegReg', (116, 120)) ('SDH', 'Gene', (91, 94)) ('SDHD', 'Gene', '6392', (191, 195)) ('SDHB', 'Gene', (121, 125)) ('SDHC', 'Gene', '6391', (91, 95)) ('SDH', 'Gene', '6390', (121, 124)) ('patients', 'Species', '9606', (71, 79)) ('SDH', 'Gene', '6390', (191, 194)) ('SDHC', 'Gene', (237, 241)) ('tumors', 'Disease', 'MESH:D009369', (59, 65)) ('SDH', 'Gene', '6390', (152, 155)) ('SDHB', 'Gene', '6390', (181, 185)) ('SDH', 'Gene', '6390', (237, 240)) ('SDHD', 'Gene', (191, 195)) ('abolished', 'NegReg', (168, 177)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDH', 'Gene', (121, 124)) ('SDH', 'Gene', '6390', (85, 88)) ('SDHB', 'Gene', (181, 185)) ('SDH', 'Gene', (191, 194)) ('SDH', 'Gene', (152, 155)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) ('SDH', 'Gene', '6390', (181, 184)) ('SDHC', 'Gene', (91, 95)) ('SDHD', 'Gene', '6392', (101, 105)) ('SDH', 'Gene', (237, 240)) ('activity', 'MPA', (156, 164)) ('SDH', 'Gene', '6390', (101, 104)) ('SDH', 'Gene', '6390', (91, 94)) ('tumors', 'Phenotype', 'HP:0002664', (59, 65)) ('SDHB', 'Gene', (85, 89)) ('SDHC', 'Gene', '6391', (237, 241)) ('SDHB', 'Gene', '6390', (121, 125)) ('immunoreactivity', 'MPA', (126, 142)) ('SDHD', 'Gene', (101, 105)) ('SDH', 'Gene', (85, 88)) ('SDH', 'Gene', (181, 184)) ('tumors', 'Disease', (59, 65)) ('mutations', 'Var', (106, 115)) ('SDH', 'Gene', (101, 104)) 25012 23154831 Based on the results, the authors recommended that screening for SDH gene mutations should be carried out in cases with negative SDHB immunohistochemistry. ('SDH', 'Gene', '6390', (65, 68)) ('SDH', 'Gene', (129, 132)) ('SDHB', 'Gene', '6390', (129, 133)) ('SDHB', 'Gene', (129, 133)) ('mutations', 'Var', (74, 83)) ('SDH', 'Gene', (65, 68)) ('SDH', 'Gene', '6390', (129, 132)) 25015 23154831 The findings presented here suggest that methylation quantification for P16 promoter CpGs could be a valuable clinical tool in the assessment of paragangliomas and that cases with P16 hypermethylation should be genetically screened for SDHB mutations. ('P16', 'Gene', '1029', (72, 75)) ('clinical', 'Species', '191496', (110, 118)) ('SDHB', 'Gene', '6390', (236, 240)) ('paragangliomas', 'Disease', (145, 159)) ('hypermethylation', 'Var', (184, 200)) ('paragangliomas', 'Disease', 'MESH:D010235', (145, 159)) ('paragangliomas', 'Phenotype', 'HP:0002668', (145, 159)) ('P16', 'Gene', (180, 183)) ('SDHB', 'Gene', (236, 240)) ('P16', 'Gene', (72, 75)) ('paraganglioma', 'Phenotype', 'HP:0002668', (145, 158)) ('P16', 'Gene', '1029', (180, 183)) ('mutations', 'Var', (241, 250)) 25016 23154831 In summary, our results associated mutation of the SDHB gene to alterations in TSG methylation in paragangliomas. ('paragangliomas', 'Phenotype', 'HP:0002668', (98, 112)) ('TSG', 'Gene', (79, 82)) ('associated', 'Reg', (24, 34)) ('methylation', 'MPA', (83, 94)) ('TSG', 'Gene', '57045', (79, 82)) ('paragangliomas', 'Disease', 'MESH:D010235', (98, 112)) ('alterations', 'Reg', (64, 75)) ('SDHB', 'Gene', '6390', (51, 55)) ('mutation', 'Var', (35, 43)) ('paragangliomas', 'Disease', (98, 112)) ('SDHB', 'Gene', (51, 55)) ('paraganglioma', 'Phenotype', 'HP:0002668', (98, 111)) 25017 23154831 We here propose that epigenetic inactivation of TSGs is an important component in familial paraganglioma syndrome and suggest inquiries into the use of demethylating agents as a means to combat malignant paragangliomas. ('TSG', 'Gene', (48, 51)) ('paraganglioma', 'Phenotype', 'HP:0002668', (91, 104)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (194, 218)) ('epigenetic inactivation', 'Var', (21, 44)) ('familial paraganglioma syndrome', 'Disease', 'MESH:D010235', (82, 113)) ('TSG', 'Gene', '57045', (48, 51)) ('component', 'Reg', (69, 78)) ('paragangliomas', 'Phenotype', 'HP:0002668', (204, 218)) ('malignant paragangliomas', 'Disease', (194, 218)) ('paraganglioma', 'Phenotype', 'HP:0002668', (204, 217)) ('familial paraganglioma syndrome', 'Disease', (82, 113)) 25019 23154831 We further propose the use of P16 methylation assessment as an additive tool in identification of patients for SDHB mutation screenings. ('SDHB', 'Gene', (111, 115)) ('P16', 'Gene', '1029', (30, 33)) ('mutation', 'Var', (116, 124)) ('patients', 'Species', '9606', (98, 106)) ('P16', 'Gene', (30, 33)) ('SDHB', 'Gene', '6390', (111, 115)) 25145 23226643 Excision of the pheochromocytoma would lower the blood pressure, thus significantly decreasing the blood flow across the stenotic lesion. ('decreasing', 'NegReg', (84, 94)) ('lower the blood pressure', 'Phenotype', 'HP:0002615', (39, 63)) ('pheochromocytoma', 'Disease', (16, 32)) ('stenotic lesion', 'Disease', 'MESH:D051437', (121, 136)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (16, 32)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (16, 32)) ('stenotic lesion', 'Disease', (121, 136)) ('blood pressure', 'MPA', (49, 63)) ('Excision', 'Var', (0, 8)) ('lower', 'NegReg', (39, 44)) 25217 22691888 The study of families with genetically inherited mutations in pheochromocytoma susceptibility genes has greatly enhanced our understanding of the pathophysiology and mechanisms of oncogenesis of the disease, and consequently changed our clinical approach. ('enhanced', 'PosReg', (112, 120)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (62, 78)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('oncogenesis of the disease', 'Disease', 'MESH:D063646', (180, 206)) ('mutations', 'Var', (49, 58)) ('changed', 'Reg', (225, 232)) ('oncogenesis of the disease', 'Disease', (180, 206)) ('pheochromocytoma', 'Disease', (62, 78)) 25218 22691888 Such mutations are responsible for the dysregulation of metabolic pathways involved in oxygen and nutrient sensing, apoptosis regulation, cell proliferation, migration and invasion. ('metabolic pathways', 'Pathway', (56, 74)) ('apoptosis', 'CPA', (116, 125)) ('responsible', 'Reg', (19, 30)) ('mutations', 'Var', (5, 14)) ('invasion', 'CPA', (172, 180)) ('oxygen', 'Chemical', 'MESH:D010100', (87, 93)) ('cell proliferation', 'CPA', (138, 156)) ('migration', 'CPA', (158, 167)) 25230 22691888 One cluster is the tumors with VHL and SDHx mutant genes and the other cluster contains tumors with RET and NF1 mutant genes. ('VHL', 'Gene', '7428', (31, 34)) ('tumors', 'Disease', (19, 25)) ('mutant genes', 'Var', (44, 56)) ('tumors', 'Disease', 'MESH:D009369', (88, 94)) ('tumors', 'Disease', 'MESH:D009369', (19, 25)) ('SDHx', 'Chemical', '-', (39, 43)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('SDHx', 'Gene', (39, 43)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('mutant', 'Var', (112, 118)) ('tumors', 'Phenotype', 'HP:0002664', (88, 94)) ('tumors', 'Disease', (88, 94)) ('VHL', 'Gene', (31, 34)) ('NF1', 'Gene', (108, 111)) 25232 22691888 As newer genes were discovered further microarray studies tried to classify them into these two clusters and mutations in KIF1Bbeta, TMEM127 and MAX clustered with RET/NF1 and SDHAF2 and SDHA clustered with SDHx/VHL. ('SDHx', 'Chemical', '-', (207, 211)) ('SDHA', 'Gene', '6389', (176, 180)) ('SDHA', 'Gene', '6389', (187, 191)) ('SDHAF2', 'Gene', (176, 182)) ('KIF1Bbeta', 'Gene', (122, 131)) ('MAX', 'Gene', (145, 148)) ('MAX', 'Gene', '4149', (145, 148)) ('SDHAF2', 'Gene', '54949', (176, 182)) ('SDHA', 'Gene', (176, 180)) ('SDHA', 'Gene', (187, 191)) ('VHL', 'Gene', (212, 215)) ('clustered', 'Reg', (149, 158)) ('TMEM127', 'Gene', (133, 140)) ('mutations', 'Var', (109, 118)) ('TMEM127', 'Gene', '55654', (133, 140)) ('VHL', 'Gene', '7428', (212, 215)) 25236 22691888 The basis underlying this association seems to be confirmed with the pseudo hypoxia hypothesis for tumorigenesis caused due to VHL and SDHx mutations. ('tumor', 'Disease', (99, 104)) ('SDHx', 'Chemical', '-', (135, 139)) ('hypoxia', 'Disease', (76, 83)) ('VHL', 'Gene', (127, 130)) ('tumor', 'Disease', 'MESH:D009369', (99, 104)) ('VHL', 'Gene', '7428', (127, 130)) ('mutations', 'Var', (140, 149)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('hypoxia', 'Disease', 'MESH:D000860', (76, 83)) ('SDHx', 'Gene', (135, 139)) 25237 22691888 Mutations in these genes lead to accumulation and stabilization of hypoxia inducible factor alpha. ('hypoxia', 'Disease', (67, 74)) ('hypoxia', 'Disease', 'MESH:D000860', (67, 74)) ('Mutations', 'Var', (0, 9)) ('stabilization', 'MPA', (50, 63)) ('accumulation', 'PosReg', (33, 45)) 25241 22691888 If the VHL gene is mutated the protein is not formed and HIF-alpha cannot be degraded and it accumulates. ('accumulates', 'PosReg', (93, 104)) ('VHL', 'Gene', '7428', (7, 10)) ('VHL', 'Gene', (7, 10)) ('mutated', 'Var', (19, 26)) 25242 22691888 Succinate dehydrogenase enzymes convert succinate to fumarate and its mutation leads to accumulation of succinate. ('succinate', 'Chemical', 'MESH:D019802', (104, 113)) ('fumarate', 'Chemical', 'MESH:D005650', (53, 61)) ('leads to', 'Reg', (79, 87)) ('Succinate dehydrogenase', 'Gene', (0, 23)) ('succinate', 'Chemical', 'MESH:D019802', (40, 49)) ('mutation', 'Var', (70, 78)) ('succinate', 'MPA', (104, 113)) ('Succinate dehydrogenase', 'Gene', '6390', (0, 23)) ('accumulation', 'PosReg', (88, 100)) 25244 22691888 Therefore VHL and SDHx mutations both lead to induction of genes that would have also been induced via hypoxia and lead to tumor development by different mechanisms through the same pathway. ('tumor', 'Disease', (123, 128)) ('SDHx', 'Gene', (18, 22)) ('tumor', 'Disease', 'MESH:D009369', (123, 128)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('mutations', 'Var', (23, 32)) ('induction', 'PosReg', (46, 55)) ('VHL', 'Gene', (10, 13)) ('hypoxia', 'Disease', (103, 110)) ('SDHx', 'Chemical', '-', (18, 22)) ('VHL', 'Gene', '7428', (10, 13)) ('hypoxia', 'Disease', 'MESH:D000860', (103, 110)) 25245 22691888 A mutation in the prolyl hydroxylase domain-2 (PHD2) gene has recently been implicated in a case of recurrent paragangliomas and erythrocytosis. ('paragangliomas and erythrocytosis', 'Disease', 'MESH:D011086', (110, 143)) ('mutation', 'Var', (2, 10)) ('prolyl hydroxylase domain-2', 'Gene', (18, 45)) ('PHD2', 'Gene', (47, 51)) ('prolyl hydroxylase domain-2', 'Gene', '54583', (18, 45)) ('PHD2', 'Gene', '54583', (47, 51)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (129, 143)) ('paraganglioma', 'Phenotype', 'HP:0002668', (110, 123)) ('paragangliomas', 'Phenotype', 'HP:0002668', (110, 124)) ('implicated in', 'Reg', (76, 89)) 25246 22691888 This mutation affects PHD2 function and stabilizes HIF-alpha proteins. ('function', 'MPA', (27, 35)) ('PHD2', 'Gene', '54583', (22, 26)) ('PHD2', 'Gene', (22, 26)) ('HIF-alpha proteins', 'Protein', (51, 69)) ('affects', 'Reg', (14, 21)) ('stabilizes', 'MPA', (40, 50)) ('mutation', 'Var', (5, 13)) 25247 22691888 Also loss of heterozygosity could be indicative that the PHD2 could be a tumor-suppressor gene. ('tumor', 'Disease', 'MESH:D009369', (73, 78)) ('PHD2', 'Gene', '54583', (57, 61)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('PHD2', 'Gene', (57, 61)) ('tumor', 'Disease', (73, 78)) ('loss', 'Var', (5, 9)) 25255 22691888 More recently, pheochromocytoma susceptibility has been associated with mutations in the succinate dehydrogenase (SDH) gene. ('mutations', 'Var', (72, 81)) ('succinate dehydrogenase', 'Gene', '6390', (89, 112)) ('SDH', 'Gene', '6390', (114, 117)) ('pheochromocytoma', 'Disease', (15, 31)) ('succinate dehydrogenase', 'Gene', (89, 112)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (15, 31)) ('associated', 'Reg', (56, 66)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (15, 31)) ('SDH', 'Gene', (114, 117)) 25259 22691888 In particular mutation in the SDHB subunit has been associated with a high likelihood of malignancy. ('malignancy', 'Disease', (89, 99)) ('associated', 'Reg', (52, 62)) ('mutation', 'Var', (14, 22)) ('SDHB', 'Gene', '6390', (30, 34)) ('SDHB', 'Gene', (30, 34)) ('malignancy', 'Disease', 'MESH:D009369', (89, 99)) 25264 22691888 Shortly after, mutations in genes that code for sub-units B (SDHB) and C (SDHC) were identified as genes of susceptibility. ('mutations', 'Var', (15, 24)) ('SDHB', 'Gene', '6390', (61, 65)) ('SDHB', 'Gene', (61, 65)) ('SDHC', 'Gene', (74, 78)) ('SDHC', 'Gene', '6391', (74, 78)) 25265 22691888 The familial paragangliomas syndromes (PGL) type 1 to 4 have been found to be associated with gene mutations in these SDH subunits namely - PGL-1 (SDHD), PGL-2 (SDHAF2/SDH5), PGL-3 (SDHC) and PGL-4 (SDHB). ('SDH', 'Gene', (147, 150)) ('SDHC', 'Gene', (182, 186)) ('PGL-3', 'Gene', '6391', (175, 180)) ('SDH5', 'Gene', (168, 172)) ('SDHB', 'Gene', (199, 203)) ('SDH', 'Gene', '6390', (182, 185)) ('SDH', 'Gene', '6390', (199, 202)) ('SDHAF2', 'Gene', '54949', (161, 167)) ('SDHAF2', 'Gene', (161, 167)) ('SDH', 'Gene', (161, 164)) ('SDH', 'Gene', (168, 171)) ('PGL-2', 'Gene', (154, 159)) ('familial paragangliomas syndromes', 'Disease', (4, 37)) ('SDH', 'Gene', '6390', (118, 121)) ('SDH', 'Gene', '6390', (161, 164)) ('PGL-4', 'Gene', '6390', (192, 197)) ('PGL-3', 'Gene', (175, 180)) ('SDH5', 'Gene', '54949', (168, 172)) ('familial paragangliomas syndromes', 'Disease', 'MESH:D010235', (4, 37)) ('associated', 'Reg', (78, 88)) ('SDH', 'Gene', (182, 185)) ('paraganglioma', 'Phenotype', 'HP:0002668', (13, 26)) ('paragangliomas', 'Phenotype', 'HP:0002668', (13, 27)) ('SDH', 'Gene', (199, 202)) ('SDHD', 'Gene', '6392', (147, 151)) ('SDHC', 'Gene', '6391', (182, 186)) ('SDH', 'Gene', (118, 121)) ('SDH', 'Gene', '6390', (147, 150)) ('mutations', 'Var', (99, 108)) ('SDHB', 'Gene', '6390', (199, 203)) ('SDHD', 'Gene', (147, 151)) ('SDH', 'Gene', '6390', (168, 171)) ('PGL-4', 'Gene', (192, 197)) ('PGL-2', 'Gene', '54949', (154, 159)) 25266 22691888 Missense, frame-shift and nonsense mutations predisposing to pheochromocytoma have been identified in all the subunits of the SDH complex, including more recently in the SDHA subunit and in the SDH5/SDHAF2 gene, identified in patients with head and neck paragangliomas. ('paraganglioma', 'Phenotype', 'HP:0002668', (254, 267)) ('paragangliomas', 'Phenotype', 'HP:0002668', (254, 268)) ('SDHA', 'Gene', '6389', (170, 174)) ('SDH5', 'Gene', '54949', (194, 198)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (61, 77)) ('Missense', 'Var', (0, 8)) ('SDH', 'Gene', (170, 173)) ('SDHAF2', 'Gene', (199, 205)) ('SDH', 'Gene', (194, 197)) ('SDH', 'Gene', '6390', (199, 202)) ('neck paragangliomas', 'Disease', (249, 268)) ('SDHAF2', 'Gene', '54949', (199, 205)) ('SDHA', 'Gene', (199, 203)) ('pheochromocytoma', 'Disease', (61, 77)) ('frame-shift', 'Var', (10, 21)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (61, 77)) ('patients', 'Species', '9606', (226, 234)) ('SDHA', 'Gene', '6389', (199, 203)) ('SDH', 'Gene', '6390', (126, 129)) ('SDH', 'Gene', (199, 202)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (240, 268)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (249, 268)) ('SDH5', 'Gene', (194, 198)) ('SDH', 'Gene', (126, 129)) ('SDH', 'Gene', '6390', (194, 197)) ('SDH', 'Gene', '6390', (170, 173)) ('SDHA', 'Gene', (170, 174)) 25269 22691888 RET and NF1 mutations lead to activation of the RAS/RAF/MAPK and the PI3K/AKT/mTOR signaling pathways. ('NF1', 'Gene', (8, 11)) ('mutations', 'Var', (12, 21)) ('AKT', 'Gene', '207', (74, 77)) ('activation', 'PosReg', (30, 40)) ('RAF', 'Gene', '22882', (52, 55)) ('RET', 'Gene', (0, 3)) ('RAF', 'Gene', (52, 55)) ('mTOR', 'Gene', (78, 82)) ('mTOR', 'Gene', '2475', (78, 82)) ('AKT', 'Gene', (74, 77)) 25270 22691888 TMEM127 mutant tumors clusters with the RET/NF1 group and they enhance mTOR activity independent of the above two kinase pathways. ('tumors', 'Phenotype', 'HP:0002664', (15, 21)) ('TMEM127', 'Gene', '55654', (0, 7)) ('enhance', 'PosReg', (63, 70)) ('tumors', 'Disease', 'MESH:D009369', (15, 21)) ('mutant', 'Var', (8, 14)) ('mTOR', 'Gene', '2475', (71, 75)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('mTOR', 'Gene', (71, 75)) ('TMEM127', 'Gene', (0, 7)) ('tumors', 'Disease', (15, 21)) 25271 22691888 Microarray expression analysis of KIF1Bbeta mutant tumors also groups with RET/NF1 tumors though its potential role in kinase pathways is not yet known. ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('NF1 tumors', 'Disease', (79, 89)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('KIF1Bbeta', 'Gene', (34, 43)) ('tumors', 'Disease', (83, 89)) ('tumors', 'Phenotype', 'HP:0002664', (83, 89)) ('NF1 tumors', 'Disease', 'MESH:C537392', (79, 89)) ('tumors', 'Disease', (51, 57)) ('tumors', 'Disease', 'MESH:D009369', (51, 57)) ('tumors', 'Phenotype', 'HP:0002664', (51, 57)) ('tumors', 'Disease', 'MESH:D009369', (83, 89)) ('groups', 'Reg', (63, 69)) ('mutant', 'Var', (44, 50)) 25272 22691888 While the recently discovered MAX gene mutation, which leads to dysregulation of the MYC-MAX-MXD1 network, is grouped with this cluster for its connection with mTOR pathway. ('mutation', 'Var', (39, 47)) ('MXD1', 'Gene', (93, 97)) ('mTOR', 'Gene', '2475', (160, 164)) ('dysregulation', 'MPA', (64, 77)) ('mTOR', 'Gene', (160, 164)) ('MAX', 'Gene', (30, 33)) ('MXD1', 'Gene', '4084', (93, 97)) ('MAX', 'Gene', '4149', (30, 33)) ('MAX', 'Gene', '4149', (89, 92)) ('MAX', 'Gene', (89, 92)) 25273 22691888 (Figure 2) The study of families with MEN2 A and B, which develop pheochromocytomas among other tumors, allowed the discovery of mutations in the RET (Rearranged during Transfection) proto-oncogene. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (66, 83)) ('Rearranged during Transfection', 'Gene', '5979', (151, 181)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (66, 82)) ('MEN2 A and B', 'Gene', '5979', (38, 50)) ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('mutations', 'Var', (129, 138)) ('tumors', 'Disease', (96, 102)) ('pheochromocytomas', 'Disease', (66, 83)) ('tumors', 'Phenotype', 'HP:0002664', (96, 102)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (66, 83)) ('tumors', 'Disease', 'MESH:D009369', (96, 102)) ('RET', 'Gene', (146, 149)) ('Rearranged during Transfection', 'Gene', (151, 181)) 25281 22691888 Gain-of-function point mutations in RET, causing ligand-independent activation of the gene product, is the initial oncogenic event in the hereditary cancer syndrome multiple endocrine neoplasia type 2 (MEN 2), which recognize three subtypes based on clinical presentation: 1) MEN 2A; 2) MEN 2B; and 3) familial medullary thyroid carcinoma (FMTC). ('RET', 'Gene', (36, 39)) ('MEN 2A', 'Gene', (276, 282)) ('MEN 2A', 'Gene', '5979', (276, 282)) ('hereditary cancer syndrome multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (138, 200)) ('MEN', 'Species', '9606', (287, 290)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (321, 338)) ('MEN', 'Species', '9606', (202, 205)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (311, 338)) ('neoplasia', 'Phenotype', 'HP:0002664', (184, 193)) ('cancer', 'Phenotype', 'HP:0002664', (149, 155)) ('point mutations', 'Var', (17, 32)) ('Gain-of-function', 'PosReg', (0, 16)) ('carcinoma', 'Phenotype', 'HP:0030731', (329, 338)) ('MEN 2B; and 3', 'Gene', '5979', (287, 300)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (321, 338)) ('thyroid carcinoma', 'Disease', (321, 338)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (174, 193)) ('MEN', 'Species', '9606', (276, 279)) 25282 22691888 Trisomy 10 with duplication of the mutant RET allele, loss of wild-type RET allele and tandem duplication with amplification of the mutant RET, are among the "second hit" mechanisms identified that favor tumor development in these patients. ('RET', 'Gene', (139, 142)) ('duplication', 'Var', (16, 27)) ('tumor', 'Disease', 'MESH:D009369', (204, 209)) ('patients', 'Species', '9606', (231, 239)) ('tumor', 'Phenotype', 'HP:0002664', (204, 209)) ('mutant', 'Var', (132, 138)) ('favor', 'PosReg', (198, 203)) ('tumor', 'Disease', (204, 209)) ('RET', 'Gene', (42, 45)) ('Trisomy', 'Disease', (0, 7)) ('Trisomy', 'Disease', 'MESH:D014314', (0, 7)) ('tandem duplication', 'Var', (87, 105)) 25284 22691888 For example, in MEN 2A pheochromocytomas occur more frequently in patients with RET mutations in codon 634 and less frequently when the mutation involves codons 618, 620 or 791. ('MEN 2A', 'Gene', (16, 22)) ('MEN 2A', 'Gene', '5979', (16, 22)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (23, 40)) ('mutations in codon 634', 'Var', (84, 106)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (23, 39)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (23, 40)) ('pheochromocytomas', 'Disease', (23, 40)) ('patients', 'Species', '9606', (66, 74)) 25285 22691888 Loss-of-function mutations in the RET gene are responsible for a different congenital disorder, known as Hirschsprung's disease (or aganglionic megacolon) in which normal enteric nerves are absent. ('Loss-of-function', 'NegReg', (0, 16)) ('aganglionic megacolon', 'Phenotype', 'HP:0002251', (132, 153)) ('congenital disorder', 'Disease', (75, 94)) ('RET', 'Gene', (34, 37)) ('congenital disorder', 'Disease', 'MESH:D000013', (75, 94)) ("Hirschsprung's disease", 'Phenotype', 'HP:0002251', (105, 127)) ("Hirschsprung's disease", 'Disease', (105, 127)) ('mutations', 'Var', (17, 26)) ("Hirschsprung's disease", 'Disease', 'MESH:D006627', (105, 127)) 25286 22691888 Several groups have suggested that mutant RET in MEN 2B activates additional aberrant signaling pathways, which account for the more aggressive phenotype in patients with this syndrome compared to patients affected by MEN 2A. ('MEN 2B', 'Gene', '5979', (49, 55)) ('activates', 'PosReg', (56, 65)) ('MEN 2A', 'Gene', '5979', (218, 224)) ('MEN 2A', 'Gene', (218, 224)) ('patients', 'Species', '9606', (197, 205)) ('mutant', 'Var', (35, 41)) ('patients', 'Species', '9606', (157, 165)) ('RET', 'Gene', (42, 45)) ('MEN 2B', 'Gene', (49, 55)) ('aberrant signaling pathways', 'Pathway', (77, 104)) 25287 22691888 Interestingly, also RET mutations in MEN 2A occur mainly in the extracellular domain cysteine residue, causing alterations in receptor dimerization, while MEN 2B RET mutation are predominantly located in the intracellular domain, resulting in activation of different signaling pathways and consequent expression of different target genes. ('signaling pathways', 'Pathway', (267, 285)) ('MEN 2B', 'Gene', '5979', (155, 161)) ('receptor dimerization', 'MPA', (126, 147)) ('MEN 2A', 'Gene', '5979', (37, 43)) ('alterations', 'Reg', (111, 122)) ('activation', 'PosReg', (243, 253)) ('expression', 'MPA', (301, 311)) ('mutations', 'Var', (24, 33)) ('MEN 2B', 'Gene', (155, 161)) ('cysteine', 'Chemical', 'MESH:D003545', (85, 93)) ('MEN 2A', 'Gene', (37, 43)) 25290 22691888 In patients with mutation in this gene, in conjunction with other tumors, pheochromocytoma is present in up to 5% of cases and it is frequently diagnosed later in life. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('mutation', 'Var', (17, 25)) ('tumors', 'Disease', (66, 72)) ('pheochromocytoma', 'Disease', (74, 90)) ('tumors', 'Disease', 'MESH:D009369', (66, 72)) ('tumors', 'Phenotype', 'HP:0002664', (66, 72)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (74, 90)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (74, 90)) ('patients', 'Species', '9606', (3, 11)) 25293 22691888 Studies on transgenic mice with NF1 mutations have clearly linked this gene with the development of pheochromocytoma. ('pheochromocytoma', 'Disease', 'MESH:D010673', (100, 116)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (100, 116)) ('linked', 'Reg', (59, 65)) ('NF1', 'Gene', (32, 35)) ('mutations', 'Var', (36, 45)) ('pheochromocytoma', 'Disease', (100, 116)) ('transgenic mice', 'Species', '10090', (11, 26)) 25298 22691888 Interestingly, tumor samples from patient with TMEM127 mutations have an increased activation of mTORC1. ('mTORC1', 'Gene', (97, 103)) ('tumor', 'Disease', 'MESH:D009369', (15, 20)) ('mutations', 'Var', (55, 64)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('patient', 'Species', '9606', (34, 41)) ('tumor', 'Disease', (15, 20)) ('mTORC1', 'Gene', '382056', (97, 103)) ('TMEM127', 'Gene', (47, 54)) ('TMEM127', 'Gene', '55654', (47, 54)) ('activation', 'PosReg', (83, 93)) 25299 22691888 Patients with TMEM127 mutation tend to have benign, bilateral adrenal pheochromocytomas; a clear association with development of other tumors in these patients still needs to be clarified. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (70, 87)) ('TMEM127', 'Gene', (14, 21)) ('mutation', 'Var', (22, 30)) ('bilateral adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (52, 87)) ('TMEM127', 'Gene', '55654', (14, 21)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (70, 86)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('patients', 'Species', '9606', (151, 159)) ('Patients', 'Species', '9606', (0, 8)) ('tumors', 'Disease', (135, 141)) ('benign', 'Disease', (44, 50)) ('tumors', 'Disease', 'MESH:D009369', (135, 141)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (62, 87)) ('bilateral adrenal pheochromocytomas', 'Disease', (52, 87)) 25300 22691888 were able to identify MAX gene mutations in three independent familial cases of pheochromocytoma; the inactivating nature of the germline mutation points to a tumor suppression function for this gene. ('pheochromocytoma', 'Disease', (80, 96)) ('mutations', 'Var', (31, 40)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (80, 96)) ('tumor', 'Disease', (159, 164)) ('MAX', 'Gene', '4149', (22, 25)) ('MAX', 'Gene', (22, 25)) ('tumor', 'Disease', 'MESH:D009369', (159, 164)) 25305 22691888 According to this model the germline mutations in RET, VHL, NF1 and SDHx prevent apoptosis of the neuronal progenitor cells. ('RET', 'Gene', (50, 53)) ('SDHx', 'Chemical', '-', (68, 72)) ('SDHx', 'Gene', (68, 72)) ('apoptosis of the neuronal progenitor cells', 'CPA', (81, 123)) ('germline mutations', 'Var', (28, 46)) ('NF1', 'Gene', (60, 63)) ('VHL', 'Gene', (55, 58)) ('prevent', 'NegReg', (73, 80)) ('VHL', 'Gene', '7428', (55, 58)) 25307 22691888 The recognition that germline mutations in the genes described above are important in the pathogenesis and clinical presentation of patients with pheochromocytoma, provide a solid justification for genetic testing as an important part of patient management. ('important', 'Reg', (73, 82)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (146, 162)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (146, 162)) ('germline mutations', 'Var', (21, 39)) ('patient', 'Species', '9606', (132, 139)) ('patient', 'Species', '9606', (238, 245)) ('patients', 'Species', '9606', (132, 140)) ('pheochromocytoma', 'Disease', (146, 162)) 25324 22691888 Phenoxybenzamine is associated with elevation in norepinephrine and normetanephrine and can lead to high false positive rates. ('Phenoxybenzamine', 'Var', (0, 16)) ('normetanephrine', 'MPA', (68, 83)) ('elevation', 'PosReg', (36, 45)) ('norepinephrine', 'MPA', (49, 63)) ('normetanephrine', 'Chemical', 'MESH:D009647', (68, 83)) ('Phenoxybenzamine', 'Chemical', 'MESH:D010643', (0, 16)) ('norepinephrine', 'Chemical', 'MESH:D009638', (49, 63)) 25332 22691888 Such patients have increased likelihood of SDHB positivity, tumor size (>5 cm) and extra-adrenal location of their tumor all predictors for higher likelihood of malignancy. ('malignancy', 'Disease', 'MESH:D009369', (161, 171)) ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('patients', 'Species', '9606', (5, 13)) ('malignancy', 'Disease', (161, 171)) ('SDHB', 'Gene', '6390', (43, 47)) ('positivity', 'Var', (48, 58)) ('tumor', 'Disease', (115, 120)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('increased', 'PosReg', (19, 28)) ('SDHB', 'Gene', (43, 47)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('tumor', 'Disease', (60, 65)) ('tumor', 'Disease', 'MESH:D009369', (115, 120)) 25336 22691888 Since clonidine decreases resting plasma catecholamines by inhibition of centrally mediated stimulatory adrenergic influences it would not be expected to suppress catecholamine release in pheochromocytoma. ('inhibition', 'NegReg', (59, 69)) ('catecholamine', 'Chemical', 'MESH:D002395', (41, 54)) ('resting plasma catecholamines', 'MPA', (26, 55)) ('pheochromocytoma', 'Disease', (188, 204)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (188, 204)) ('catecholamine', 'Chemical', 'MESH:D002395', (163, 176)) ('clonidine', 'Var', (6, 15)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (188, 204)) ('catecholamines', 'Chemical', 'MESH:D002395', (41, 55)) ('decreases', 'NegReg', (16, 25)) ('clonidine', 'Chemical', 'MESH:D003000', (6, 15)) ('catecholamine', 'MPA', (163, 176)) 25358 22691888 MIBG scanning may be carried out with either 123I or 131I-MIBG scanning with 123I offers a number of advantages over 131I like much better sensitivity, additional utility for imaging by SPECT and shorter half-life hence higher doses can be used. ('MIBG', 'Chemical', 'MESH:D019797', (0, 4)) ('123I', 'Chemical', 'MESH:C000614958', (77, 81)) ('123I', 'Var', (77, 81)) ('MIBG', 'Chemical', 'MESH:D019797', (58, 62)) ('131I', 'Chemical', 'MESH:C000614965', (117, 121)) ('123I', 'Chemical', 'MESH:C000614958', (45, 49)) ('better', 'PosReg', (132, 138)) ('131I', 'Chemical', 'MESH:C000614965', (53, 57)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (53, 62)) 25364 22691888 Adrenal tumors associated with a VHL gene mutation are best imaged by 18F-DA PET. ('Adrenal tumors', 'Disease', 'MESH:D000310', (0, 14)) ('VHL', 'Gene', (33, 36)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('associated', 'Reg', (15, 25)) ('VHL', 'Gene', '7428', (33, 36)) ('mutation', 'Var', (42, 50)) ('Adrenal tumors', 'Disease', (0, 14)) ('tumors', 'Phenotype', 'HP:0002664', (8, 14)) ('18F-DA', 'Chemical', '-', (70, 76)) 25372 22691888 About 40-50% patients with malignant pheochromocytoma will have mutations in SDHB (~35 %), VHL (~5%) and SDHD (~1%) and hence should be offered testing for at least these 3 genes. ('SDHD', 'Gene', '6392', (105, 109)) ('VHL', 'Gene', (91, 94)) ('SDHD', 'Gene', (105, 109)) ('SDHB', 'Gene', '6390', (77, 81)) ('patients', 'Species', '9606', (13, 21)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (37, 53)) ('VHL', 'Gene', '7428', (91, 94)) ('SDHB', 'Gene', (77, 81)) ('mutations', 'Var', (64, 73)) ('malignant pheochromocytoma', 'Disease', (27, 53)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (27, 53)) 25374 22691888 In an individual with SDHB positive immunohistochemistry staining one should test for VHL, RET or NF1 mutations. ('RET', 'Gene', (91, 94)) ('SDHB', 'Gene', '6390', (22, 26)) ('SDHB', 'Gene', (22, 26)) ('NF1', 'Gene', (98, 101)) ('mutations', 'Var', (102, 111)) ('VHL', 'Gene', (86, 89)) ('test', 'Reg', (77, 81)) ('VHL', 'Gene', '7428', (86, 89)) 25376 22691888 SDHB immunohistochemistry has a sensitivity of about 100% and a specificity of about 84% in a prospective series to detect the presence of an SDH mutation. ('SDH', 'Gene', '6390', (142, 145)) ('SDH', 'Gene', (0, 3)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDH', 'Gene', (142, 145)) ('mutation', 'Var', (146, 154)) ('SDHB', 'Gene', (0, 4)) ('SDH', 'Gene', '6390', (0, 3)) 25377 22691888 SDHA immunohistochemistry has recently been shown to reveal the presence of SDHA mutations in about 3% of patients who are affected by apparently sporadic tumors. ('SDHA', 'Gene', '6389', (76, 80)) ('tumor', 'Phenotype', 'HP:0002664', (155, 160)) ('SDHA', 'Gene', (0, 4)) ('tumors', 'Phenotype', 'HP:0002664', (155, 161)) ('SDHA', 'Gene', (76, 80)) ('apparently sporadic tumors', 'Disease', 'MESH:C536023', (135, 161)) ('SDHA', 'Gene', '6389', (0, 4)) ('apparently sporadic tumors', 'Disease', (135, 161)) ('mutations', 'Var', (81, 90)) ('patients', 'Species', '9606', (106, 114)) ('presence', 'Reg', (64, 72)) 25399 22691888 Metyrosine a competitive inhibitor of tyrosine hydroxylase, the rate-limiting step in catecholamine synthesis decreases production of catecholamines thus making pre and intra operative blood pressure control easier. ('catecholamine', 'Chemical', 'MESH:D002395', (134, 147)) ('tyrosine', 'Chemical', 'MESH:D014443', (38, 46)) ('catecholamines', 'Chemical', 'MESH:D002395', (134, 148)) ('decreases', 'NegReg', (110, 119)) ('catecholamine', 'Chemical', 'MESH:D002395', (86, 99)) ('tyrosine', 'Chemical', 'MESH:D014443', (2, 10)) ('Metyrosine', 'Chemical', 'MESH:D019805', (0, 10)) ('Metyrosine', 'Var', (0, 10)) ('production of catecholamines', 'MPA', (120, 148)) 25435 22691888 CVD therapy can cause a hypertensive crisis due to catecholamine release during treatment and hence patients should be blocked beforehand. ('hypertensive', 'Disease', 'MESH:D006973', (24, 36)) ('hypertensive', 'Disease', (24, 36)) ('catecholamine release', 'MPA', (51, 72)) ('catecholamine', 'Chemical', 'MESH:D002395', (51, 64)) ('patients', 'Species', '9606', (100, 108)) ('CVD therapy', 'Var', (0, 11)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (24, 43)) ('cause', 'Reg', (16, 21)) 25451 22691888 Symptomatic improvement may occur with all radiolabeled somatostatin analogues though tumor size reduction is achieved with 90Y and 177Lu. ('reduction', 'NegReg', (97, 106)) ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('tumor', 'Disease', (86, 91)) ('90Y', 'Var', (124, 127)) ('177Lu', 'Var', (132, 137)) ('tumor', 'Disease', 'MESH:D009369', (86, 91)) 25454 22691888 The median duration of the therapy response for [90Y-DOTA(0),Tyr(3)]octreotide is 30 months and for [177Lu-DOTA(0),Tyr(3)]octreotate it is more than 36 months. ('[177Lu-DOTA', 'Chemical', '-', (100, 111)) ('octreotate', 'Chemical', '-', (122, 132)) ('[90Y-DOTA', 'Chemical', '-', (48, 57)) ('Tyr(3)]', 'Var', (61, 68)) ('[90Y-DOTA', 'Var', (48, 57)) ('octreotide', 'Chemical', 'MESH:D015282', (68, 78)) ('Tyr', 'Chemical', 'MESH:D014443', (115, 118)) ('Tyr', 'Chemical', 'MESH:D014443', (61, 64)) 25459 19252526 VHL Type 2B gene mutation moderates HIF dosage in vitro and in vivo Von Hippel-Lindau (VHL) disease is caused by germline mutations in the VHL tumor suppressor gene, with Type 2B missense VHL mutations predisposing to renal cell carcinoma, hemangioblastoma, and pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (262, 278)) ('missense', 'Var', (179, 187)) ('VHL', 'Gene', (188, 191)) ('mutations', 'Var', (192, 201)) ('hemangioblastoma', 'Disease', (240, 256)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) ('Von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (68, 99)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (240, 256)) ('mutation', 'Var', (17, 25)) ('carcinoma', 'Phenotype', 'HP:0030731', (229, 238)) ('renal cell carcinoma', 'Disease', (218, 238)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (218, 238)) ('caused by', 'Reg', (103, 112)) ('predisposing to', 'Reg', (202, 217)) ('VHL tumor', 'Disease', (139, 148)) ('VHL Type 2B', 'Disease', 'MESH:D006623', (0, 11)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (262, 278)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (240, 256)) ('VHL tumor', 'Disease', 'MESH:D006623', (139, 148)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (218, 238)) ('pheochromocytoma', 'Disease', (262, 278)) ('VHL Type 2B', 'Disease', (0, 11)) 25460 19252526 Type 2B mutant pVHL is predicted to be defective in hypoxia inducible factor (HIF)-alpha regulation. ('defective', 'NegReg', (39, 48)) ('hypoxia', 'Disease', 'MESH:D000860', (52, 59)) ('mutant', 'Var', (8, 14)) ('pVHL', 'Gene', (15, 19)) ('hypoxia', 'Disease', (52, 59)) 25461 19252526 Murine embryonic stem (ES) cells in which the endogenous wild-type Vhl gene was replaced with the representative Type 2B VHL hotspot mutation R167Q (Vhl2B/2B) displayed preserved physiologic regulation of both HIF factors with slightly more normoxic dysregulation of HIF-2alpha. ('R167Q', 'Mutation', 'rs5030821', (142, 147)) ('Vhl', 'Gene', (67, 70)) ('physiologic regulation', 'MPA', (179, 201)) ('ES', 'Chemical', '-', (23, 25)) ('R167Q', 'Var', (142, 147)) ('more', 'PosReg', (236, 240)) ('Murine', 'Species', '10090', (0, 6)) ('normoxic dysregulation', 'MPA', (241, 263)) 25463 19252526 Vhl2B/2B mice displayed mid-gestational embryonic lethality, while adult Vhl2B/+ mice exhibited susceptibility to carcinogen-promoted renal neoplasia compared with wild-type littermates at twelve months. ('neoplasia', 'Phenotype', 'HP:0002664', (140, 149)) ('mice', 'Species', '10090', (81, 85)) ('renal neoplasia', 'Phenotype', 'HP:0009726', (134, 149)) ('Vhl2B/2B', 'Var', (0, 8)) ('renal neoplasia', 'Disease', (134, 149)) ('renal neoplasia', 'Disease', 'MESH:D007674', (134, 149)) ('susceptibility', 'Reg', (96, 110)) ('mid-gestational embryonic lethality', 'Disease', (24, 59)) ('mid-gestational embryonic lethality', 'Disease', 'MESH:D020964', (24, 59)) ('mice', 'Species', '10090', (9, 13)) 25464 19252526 Our experiments support a model in which the representative Type 2B R167Q mutant pVhl produces a unique profile of HIF dysregulation, thereby promoting tissue-specific effects on cell growth, development, and tumor predisposition. ('tumor', 'Disease', (209, 214)) ('promoting', 'PosReg', (142, 151)) ('HIF dysregulation', 'Disease', 'MESH:D021081', (115, 132)) ('development', 'CPA', (192, 203)) ('tumor', 'Phenotype', 'HP:0002664', (209, 214)) ('tumor', 'Disease', 'MESH:D009369', (209, 214)) ('R167Q', 'Mutation', 'rs5030821', (68, 73)) ('pVhl', 'Gene', (81, 85)) ('cell growth', 'CPA', (179, 190)) ('HIF dysregulation', 'Disease', (115, 132)) ('R167Q', 'Var', (68, 73)) 25465 19252526 Von Hippel-Lindau (VHL) disease is an autosomal dominant inherited cancer susceptibility syndrome resulting from germline mutation of the VHL tumor suppressor gene which affects 1 in 36,000 live births in the US. ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('autosomal dominant inherited cancer', 'Disease', 'MESH:D009386', (38, 73)) ('VHL tumor', 'Disease', 'MESH:D006623', (138, 147)) ('germline mutation', 'Var', (113, 130)) ('Von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (0, 31)) ('VHL tumor', 'Disease', (138, 147)) ('cancer', 'Phenotype', 'HP:0002664', (67, 73)) ('autosomal dominant inherited cancer', 'Disease', (38, 73)) ('resulting from', 'Reg', (98, 112)) 25466 19252526 Specific classes of VHL mutations predispose to different spectrums of morbidity- and mortality-causing clinical phenotypes of VHL disease: retinal and central nervous system (CNS) hemangioblastoma, pheochromocytoma/paraganglioma, and renal cell carcinoma with clear cell histology (ccRCC). ('retinal and central nervous system (CNS) hemangioblastoma, pheochromocytoma/paraganglioma', 'Disease', 'MESH:D018325', (140, 229)) ('VHL disease', 'Disease', 'MESH:D006623', (127, 138)) ('paraganglioma', 'Phenotype', 'HP:0002668', (216, 229)) ('renal cell carcinoma', 'Disease', (235, 255)) ('carcinoma', 'Phenotype', 'HP:0030731', (246, 255)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (235, 255)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (199, 215)) ('mutations', 'Var', (24, 33)) ('VHL', 'Gene', (20, 23)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (235, 255)) ('clear cell', 'Disease', (261, 271)) ('renal cell carcinoma with clear cell histology', 'Phenotype', 'HP:0006770', (235, 281)) ('VHL disease', 'Disease', (127, 138)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (181, 197)) ('RCC', 'Disease', 'MESH:C538614', (285, 288)) ('RCC', 'Disease', (285, 288)) 25467 19252526 Type 1 VHL mutations predispose to ccRCC and hemangioblastoma. ('predispose', 'Reg', (21, 31)) ('mutations', 'Var', (11, 20)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (45, 61)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (45, 61)) ('RCC', 'Disease', 'MESH:C538614', (37, 40)) ('RCC', 'Disease', (37, 40)) ('VHL', 'Gene', (7, 10)) ('hemangioblastoma', 'Disease', (45, 61)) 25468 19252526 Type 2 missense VHL mutations predispose to pheochromocytoma, either alone (Type 2C) or in combination with hemangioblastoma and a high (Type 2B) or low (Type 2A) risk of ccRCC. ('hemangioblastoma', 'Disease', (108, 124)) ('RCC', 'Disease', (173, 176)) ('VHL', 'Gene', (16, 19)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (108, 124)) ('pheochromocytoma', 'Disease', (44, 60)) ('RCC', 'Disease', 'MESH:C538614', (173, 176)) ('missense', 'Var', (7, 15)) ('predispose to', 'Reg', (30, 43)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (108, 124)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (44, 60)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (44, 60)) ('mutations', 'Var', (20, 29)) 25475 19252526 HIF-1alpha and HIF-2alpha target gene sets overlap in a highly context-dependent manner, but HIF-1alpha uniquely activates glycolytic enzymes. ('HIF-1alpha', 'Var', (93, 103)) ('activates', 'PosReg', (113, 122)) ('glycolytic enzymes', 'MPA', (123, 141)) ('HIF-1alpha and HIF-2alpha', 'Disease', 'None', (0, 25)) 25477 19252526 First, biallelic inactivation of VHL and over-expression of HIF targets is observed in both VHL disease-associated renal lesions and also 70-90% of sporadic ccRCC tumors. ('RCC', 'Disease', 'MESH:C538614', (159, 162)) ('VHL disease', 'Disease', 'MESH:D006623', (92, 103)) ('over-expression', 'PosReg', (41, 56)) ('renal lesions', 'Disease', 'MESH:D007674', (115, 128)) ('VHL', 'Gene', (33, 36)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('renal lesions', 'Disease', (115, 128)) ('observed', 'Reg', (75, 83)) ('tumors', 'Disease', (163, 169)) ('tumors', 'Disease', 'MESH:D009369', (163, 169)) ('tumors', 'Phenotype', 'HP:0002664', (163, 169)) ('VHL disease', 'Disease', (92, 103)) ('biallelic', 'Var', (7, 16)) ('RCC', 'Disease', (159, 162)) 25481 19252526 In vitro studies of cDNA expressed Type 2A and Type 2B mutant pVHL models revealed graded dysregulation of HIF-1alpha and HIF-2alpha, correlating with the degree of risk for ccRCC (Type 1>= Type 2B > Type 2A). ('RCC', 'Disease', (176, 179)) ('RCC', 'Disease', 'MESH:C538614', (176, 179)) ('HIF-1alpha and HIF-2alpha', 'Disease', 'None', (107, 132)) ('pVHL', 'Gene', (62, 66)) ('mutant', 'Var', (55, 61)) ('dysregulation', 'MPA', (90, 103)) 25484 19252526 A Vhl gene replacement model of Chuvash Polycythemia, however, was viable and conferred erythrocytosis in a milieu of very mild HIF-2alpha stabilization. ('Polycythemia', 'Phenotype', 'HP:0001901', (40, 52)) ('Vhl', 'Gene', (2, 5)) ('Chuvash Polycythemia', 'Disease', (32, 52)) ('Chuvash Polycythemia', 'Disease', 'MESH:C563918', (32, 52)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (88, 102)) ('conferred', 'Reg', (78, 87)) ('erythrocytosis', 'MPA', (88, 102)) ('gene replacement', 'Var', (6, 22)) 25485 19252526 To examine the activities of mutant pVHL relevant to human cancer, particularly with respect to missense mutation-specific effects on HIF regulation, we undertook a gene replacement approach to study Type 2B VHL disease in a mouse model. ('mutant', 'Var', (29, 35)) ('cancer', 'Phenotype', 'HP:0002664', (59, 65)) ('mouse', 'Species', '10090', (225, 230)) ('human', 'Species', '9606', (53, 58)) ('Type 2B VHL disease', 'Disease', (200, 219)) ('cancer', 'Disease', (59, 65)) ('cancer', 'Disease', 'MESH:D009369', (59, 65)) ('Type 2B VHL disease', 'Disease', 'MESH:D006623', (200, 219)) 25486 19252526 This model provides the first opportunity to examine the effect of a VHL disease-causing missense mutations in its pre-malignant context and under endogenous transcriptional, translational, and post-translational regulation. ('missense mutations', 'Var', (89, 107)) ('VHL disease', 'Disease', 'MESH:D006623', (69, 80)) ('VHL disease', 'Disease', (69, 80)) 25487 19252526 Murine ES cells homozygous for a representative mutant 2B Vhl allele displayed mild HIF-2alpha stabilization but functionally preserved HIF-1alpha suppression. ('mutant', 'Var', (48, 54)) ('HIF-2alpha stabilization', 'MPA', (84, 108)) ('HIF-1alpha suppression', 'MPA', (136, 158)) ('Murine ES', 'CellLine', 'CVCL:B288', (0, 9)) ('Vhl', 'Gene', (58, 61)) 25488 19252526 In vivo, while homozygosity for the mutant 2B Vhl allele conferred mid-gestational embryonic lethality, heterozygous Vhl2B/+ mice were viable and susceptible to carcinogen-promoted renal adenocarcinoma. ('mid-gestational embryonic lethality', 'Disease', (67, 102)) ('Vhl', 'Gene', (46, 49)) ('renal adenocarcinoma', 'Disease', 'MESH:C538614', (181, 201)) ('conferred', 'PosReg', (57, 66)) ('mid-gestational embryonic lethality', 'Disease', 'MESH:D020964', (67, 102)) ('mice', 'Species', '10090', (125, 129)) ('mutant', 'Var', (36, 42)) ('susceptible', 'Reg', (146, 157)) ('carcinoma', 'Phenotype', 'HP:0030731', (192, 201)) ('renal adenocarcinoma', 'Disease', (181, 201)) ('renal adenocarcinoma', 'Phenotype', 'HP:0005584', (181, 201)) 25489 19252526 Our genetic knock-in mouse model thus provides a species-congruent cellular system and in vivo model in which to further examine the contributions of Type 2B VHL missense mutation to VHL disease-associated cancers. ('cancer', 'Phenotype', 'HP:0002664', (206, 212)) ('mouse', 'Species', '10090', (21, 26)) ('missense mutation', 'Var', (162, 179)) ('VHL disease', 'Disease', (183, 194)) ('VHL', 'Gene', (158, 161)) ('cancers', 'Disease', 'MESH:D009369', (206, 213)) ('cancers', 'Phenotype', 'HP:0002664', (206, 213)) ('cancers', 'Disease', (206, 213)) ('VHL disease', 'Disease', 'MESH:D006623', (183, 194)) 25490 19252526 The Arginine 167 Glutamine (R167Q) missense mutation is a hotspot in the human VHL gene with a tight genotype-phenotype correlation to Type 2B disease. ('Arginine 167 Glutamine', 'Mutation', 'rs5030821', (4, 28)) ('Arginine', 'Var', (4, 12)) ('Type 2B disease', 'Disease', 'MESH:C536043', (137, 152)) ('R167Q', 'Mutation', 'rs5030821', (30, 35)) ('human', 'Species', '9606', (75, 80)) ('R167Q', 'Var', (30, 35)) ('Type 2B disease', 'Disease', (137, 152)) 25494 19252526 Quantitative RT-PCR analysis in Vhl2B/2B ES cells confirmed that 2B mutant Vhl was transcribed at wild-type levels (Figure 2A). ('Vhl', 'Gene', (75, 78)) ('ES', 'Chemical', '-', (41, 43)) ('mutant', 'Var', (68, 74)) 25496 19252526 The R167Q human pVHL mutation is predicted to destabilize the pVhl protein and to disrupt pVhl recruitment of Elongin C, resulting in HIF factor dysregulation. ('HIF factor dysregulation', 'MPA', (134, 158)) ('human', 'Species', '9606', (10, 15)) ('disrupt', 'NegReg', (82, 89)) ('pVhl protein', 'Protein', (62, 74)) ('pVhl recruitment', 'MPA', (90, 106)) ('R167Q', 'Mutation', 'rs5030821', (4, 9)) ('pVHL', 'Gene', (16, 20)) ('destabilize', 'NegReg', (46, 57)) ('R167Q', 'Var', (4, 9)) 25505 19252526 Mirroring the qRT-PCR results, Vhl-/- ES cells secreted robust levels of Vegf protein (4.4-fold) compared to wild-type (p<0.01), while Vhl2B/2B ES cells did not secrete measurable Vegf (Figure 2F). ('ES', 'Chemical', '-', (38, 40)) ('ES', 'Chemical', '-', (144, 146)) ('Vhl-/- ES', 'Var', (31, 40)) ('Vegf protein', 'MPA', (73, 85)) ('secreted', 'MPA', (47, 55)) 25506 19252526 To observe the functional effects of Type 2B Vhl mutation, we differentiated our panel of ES cells in a teratoma assay. ('teratoma', 'Phenotype', 'HP:0009792', (104, 112)) ('teratoma', 'Disease', 'MESH:D013724', (104, 112)) ('mutation', 'Var', (49, 57)) ('ES', 'Chemical', '-', (90, 92)) ('Vhl', 'Gene', (45, 48)) ('teratoma', 'Disease', (104, 112)) 25508 19252526 In contrast, the presence of one or two Type 2B Vhl alleles conferred a persistent growth advantage, such that Vhl2B/2B-derived teratomas grew faster than Vhl2B/+-derived teratomas, which in turn grew faster than wild-type teratomas (Figure 3A). ('teratoma', 'Phenotype', 'HP:0009792', (223, 231)) ('Vhl2B/2B-derived', 'Var', (111, 127)) ('teratomas', 'Disease', 'MESH:D013724', (223, 232)) ('grew', 'CPA', (196, 200)) ('teratomas', 'Disease', 'MESH:D013724', (128, 137)) ('growth advantage', 'CPA', (83, 99)) ('teratomas', 'Phenotype', 'HP:0009792', (171, 180)) ('faster', 'PosReg', (143, 149)) ('teratomas', 'Disease', (223, 232)) ('teratomas', 'Disease', (128, 137)) ('teratoma', 'Phenotype', 'HP:0009792', (171, 179)) ('grew', 'CPA', (138, 142)) ('teratomas', 'Disease', 'MESH:D013724', (171, 180)) ('teratomas', 'Disease', (171, 180)) ('teratoma', 'Phenotype', 'HP:0009792', (128, 136)) ('teratomas', 'Phenotype', 'HP:0009792', (223, 232)) ('faster', 'PosReg', (201, 207)) ('teratomas', 'Phenotype', 'HP:0009792', (128, 137)) ('presence', 'Var', (17, 25)) ('Vhl', 'Gene', (48, 51)) 25509 19252526 At harvest, J1, Vhl-/-, and Vhl2B/+ teratomas were well-encapsulated, while Vhl2B/2B teratomas adhered to the overlying skin (not shown). ('teratomas', 'Phenotype', 'HP:0009792', (85, 94)) ('teratomas', 'Disease', 'MESH:D013724', (85, 94)) ('teratomas', 'Disease', (85, 94)) ('teratoma', 'Phenotype', 'HP:0009792', (36, 44)) ('2B teratomas', 'Disease', 'MESH:D013724', (82, 94)) ('2B teratomas', 'Disease', (82, 94)) ('teratomas', 'Phenotype', 'HP:0009792', (36, 45)) ('teratomas', 'Disease', 'MESH:D013724', (36, 45)) ('teratoma', 'Phenotype', 'HP:0009792', (85, 93)) ('Vhl2B/+', 'Var', (28, 35)) ('teratomas', 'Disease', (36, 45)) 25512 19252526 To determine whether Type 2B mutant pVhl preserves HIF regulation in vivo, teratomas were analyzed for HIF-1alpha and HIF-2alpha protein expression by immunoblot, confirming low levels of both HIF factors (Supplemental Figure 2). ('HIF-1alpha and HIF-2alpha', 'Disease', 'None', (103, 128)) ('teratomas', 'Disease', (75, 84)) ('mutant', 'Var', (29, 35)) ('pVhl', 'Gene', (36, 40)) ('HIF regulation', 'MPA', (51, 65)) ('teratoma', 'Phenotype', 'HP:0009792', (75, 83)) ('teratomas', 'Phenotype', 'HP:0009792', (75, 84)) ('teratomas', 'Disease', 'MESH:D013724', (75, 84)) 25515 19252526 In contrast to ES cells, the Vhl2B/2B-derived teratoma exhibited significant over-expression of both EglN3 (1.46-fold, p<0.05) and Vegf (1.87-fold, p<0.001) but failed to over-express the HIF-1alpha-specific target Pfk1. ('ES', 'Chemical', '-', (15, 17)) ('Pfk1', 'Gene', (215, 219)) ('teratoma', 'Phenotype', 'HP:0009792', (46, 54)) ('teratoma', 'Disease', 'MESH:D013724', (46, 54)) ('EglN3', 'Var', (101, 106)) ('Pfk1', 'Gene', '5213', (215, 219)) ('over-expression', 'PosReg', (77, 92)) ('teratoma', 'Disease', (46, 54)) 25519 19252526 To examine 2B mutant pVhl function in murine development in vivo, we derived Vhl2B/+ knock-in mice from our targeted murine ES cells. ('mutant', 'Var', (14, 20)) ('ES', 'Chemical', '-', (124, 126)) ('mice', 'Species', '10090', (94, 98)) ('murine', 'Species', '10090', (38, 44)) ('murine', 'Species', '10090', (117, 123)) ('pVhl', 'Gene', (21, 25)) 25520 19252526 Because reliance switches from yolk sac to placenta around E9.5, Vhl2B/2B embryonic lethality observed at E9.5-E10.5 implicates placental failure. ('placental failure', 'Disease', (128, 145)) ('placental failure', 'Disease', 'MESH:D010922', (128, 145)) ('E9.5-E10.5', 'Var', (106, 116)) ('embryonic lethality', 'CPA', (74, 93)) ('Vhl2B/2B', 'Gene', (65, 73)) 25521 19252526 To visualize whether the 2B mutant Vhl allele acts similarly to the null allele in the placenta, we compared wild-type (not shown), Vhl2B/+, and Vhl2B/2B placentas by H&E for morphology and IHC for pVhl and the HIF target Vegfa. ('H&E', 'Chemical', '-', (167, 170)) ('Vegfa', 'Gene', '22339', (222, 227)) ('Vhl2B/2B', 'Var', (145, 153)) ('Vegfa', 'Gene', (222, 227)) 25522 19252526 By H&E, representative E9.5 Vhl2B/+ (Figure 5A) and Vhl2B/2B (Figure 5D) placentas displayed comparable chorionic villous fold formation and maternal red blood cell content in the spongiotrophoblast layer, but allantoic vessels, demarcated by the presence of nucleated fetal red blood cells (*), invaded the chorionic villi to a lesser extent in the Vhl2B/2B placenta. ('H&E', 'Chemical', '-', (3, 6)) ('representative', 'Var', (8, 22)) ('the', 'Var', (346, 349)) ('villous fold formation', 'Phenotype', 'HP:0011473', (114, 136)) ('E9.5', 'Var', (23, 27)) 25525 19252526 Quantitative RT-PCR on three Vhl2B/2B E9.5 embryos showed significant (p<0.05) over-expression of the four HIF target genes studied relative to a Vhl2B/+ E9.5 embryo, paralleling the effect of Vhl mutation on HIF-regulated signaling observed in the differentiated teratoma model system (Figure 5G): Vegf (average 1.54-fold), Glut1 (average 2.60-fold), EglN3 (average 3.53-fold), and Pfk1 (average 1.88-fold). ('teratoma', 'Phenotype', 'HP:0009792', (264, 272)) ('teratoma', 'Disease', 'MESH:D013724', (264, 272)) ('over-expression', 'PosReg', (79, 94)) ('teratoma', 'Disease', (264, 272)) ('Pfk1', 'Gene', '5213', (383, 387)) ('mutation', 'Var', (197, 205)) ('Pfk1', 'Gene', (383, 387)) 25529 19252526 Similar to prior models, Vhl2B/+ mice displayed frequent enlarged vessels (angiectasis) in the kidney and adrenal gland (Figure 6B, *) and renal cortical microcysts (3%, Figure 6A, Cy). ('enlarged', 'PosReg', (57, 65)) ('angiectasis', 'Disease', (75, 86)) ('renal cortical microcysts', 'Disease', (139, 164)) ('renal cortical microcysts', 'Disease', 'MESH:D007674', (139, 164)) ('Vhl2B/+', 'Var', (25, 32)) ('mice', 'Species', '10090', (33, 37)) ('angiectasis', 'Disease', 'None', (75, 86)) ('renal cortical microcysts', 'Phenotype', 'HP:0004734', (139, 164)) 25531 19252526 We hypothesized that accelerating somatic mutations via mutagenesis might reveal predisposition to cancer development in Vhl2B/+ mice. ('predisposition', 'Reg', (81, 95)) ('cancer', 'Disease', 'MESH:D009369', (99, 105)) ('mutagenesis', 'Var', (56, 67)) ('cancer', 'Disease', (99, 105)) ('cancer', 'Phenotype', 'HP:0002664', (99, 105)) ('mice', 'Species', '10090', (129, 133)) ('mutations', 'Var', (42, 51)) 25532 19252526 Transplacental N-ethyl-N-nitrosourea (ENU) mutagenesis has been used successfully to augment renal cystogenesis in mouse models of Tuberous Sclerosis, another renal tumor predisposition syndrome, and therefore was an ideal method for accelerating progression in our model. ('Tuberous Sclerosis', 'Disease', 'MESH:D014402', (131, 149)) ('augment', 'NegReg', (85, 92)) ('N-ethyl-N-nitrosourea', 'Chemical', 'MESH:D005038', (15, 36)) ('renal tumor', 'Disease', 'MESH:D007674', (159, 170)) ('mouse', 'Species', '10090', (115, 120)) ('renal tumor', 'Phenotype', 'HP:0009726', (159, 170)) ('renal cystogenesis', 'MPA', (93, 111)) ('renal cyst', 'Phenotype', 'HP:0000107', (93, 103)) ('renal tumor', 'Disease', (159, 170)) ('mutagenesis', 'Var', (43, 54)) ('tumor', 'Phenotype', 'HP:0002664', (165, 170)) ('Tuberous Sclerosis', 'Disease', (131, 149)) 25533 19252526 Renal lesions observed in mutagenized mice are summarized in Table 2. ('mice', 'Species', '10090', (38, 42)) ('Renal lesions', 'Disease', 'MESH:D007674', (0, 13)) ('Renal lesions', 'Disease', (0, 13)) ('mutagenized', 'Var', (26, 37)) 25534 19252526 At four months, both wild-type (2/4) and Vhl2B/+ (6/8) mutagenized mice displayed macroscopic subpleural lung nodules, indicating successful ENU mutagenesis. ('subpleural lung nodules', 'Disease', (94, 117)) ('subpleural lung nodules', 'Disease', 'MESH:D016606', (94, 117)) ('mutagenized', 'Var', (55, 66)) ('subpleural lung nodules', 'Phenotype', 'HP:0001482', (94, 117)) ('Vhl2B/+', 'Var', (41, 48)) ('mice', 'Species', '10090', (67, 71)) 25535 19252526 Both wild-type and Vhl2B/+ mutagenized mice displayed simple and papillary cortical renal microcysts on H&E-stained sections, suggesting that ENU mutagenesis effectively promotes benign renal cyst formation in this C57BL/6 genetic background. ('ENU', 'Var', (142, 145)) ('simple and papillary', 'Phenotype', 'HP:0007482', (54, 74)) ('cortical renal microcysts', 'Phenotype', 'HP:0004734', (75, 100)) ('that', 'Gene', (137, 141)) ('renal cyst', 'Phenotype', 'HP:0000107', (186, 196)) ('promotes benign renal cyst', 'CPA', (170, 196)) ('papillary cortical renal microcysts', 'Disease', 'MESH:D007681', (65, 100)) ('H&E', 'Chemical', '-', (104, 107)) ('effectively', 'PosReg', (158, 169)) ('mice', 'Species', '10090', (39, 43)) ('papillary cortical renal microcysts', 'Disease', (65, 100)) 25538 19252526 However, Vhl2B/+ mutagenized mice (2/10) developed pathological findings typical of VHL disease. ('VHL disease', 'Disease', 'MESH:D006623', (84, 95)) ('mutagenized', 'Var', (17, 28)) ('developed', 'Reg', (41, 50)) ('VHL disease', 'Disease', (84, 95)) ('mice', 'Species', '10090', (29, 33)) 25541 19252526 Statistical analysis suggested that Vhl mutation correlated with or trended toward development of neoplasia at 12 months (Pearson's chi2 p=0.037, Fisher's exact test p=0.101). ('mutation', 'Var', (40, 48)) ('Vhl', 'Gene', (36, 39)) ('neoplasia', 'Disease', 'MESH:D009369', (98, 107)) ('neoplasia', 'Disease', (98, 107)) ('neoplasia', 'Phenotype', 'HP:0002664', (98, 107)) 25542 19252526 Germline Type 2B missense mutations in VHL predispose to ccRCC, CNS and retinal hemangioblastoma, and pheochromocytoma and paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (123, 136)) ('missense mutations', 'Var', (17, 35)) ('VHL', 'Gene', (39, 42)) ('predispose', 'Reg', (43, 53)) ('retinal hemangioblastoma', 'Disease', (72, 96)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (102, 136)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (80, 96)) ('CNS', 'Disease', (64, 67)) ('retinal hemangioblastoma', 'Phenotype', 'HP:0009711', (72, 96)) ('retinal hemangioblastoma', 'Disease', 'MESH:D018325', (72, 96)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (102, 118)) ('RCC', 'Disease', 'MESH:C538614', (59, 62)) ('RCC', 'Disease', (59, 62)) 25543 19252526 In our murine gene replacement system, which models one VHL type 2B disease mutation, R167Q, generated a unique pattern of HIF-1alpha and HIF-2alpha dysregulation, differing from Vhl-null both in degree and ratio of HIF stabilization as well as in functional outcome in in vitro and in vivo studies. ('R167Q', 'Mutation', 'rs5030821', (86, 91)) ('HIF-1alpha and HIF-2alpha dysregulation', 'Disease', 'MESH:D021081', (123, 162)) ('R167Q', 'Var', (86, 91)) ('VHL type 2B disease', 'Disease', 'MESH:D006623', (56, 75)) ('murine', 'Species', '10090', (7, 13)) ('VHL type 2B disease', 'Disease', (56, 75)) 25545 19252526 We observed reduced levels of 2B mutant pVhl protein in homozygous ES cells, supporting the hypothesis that ccRCC-predisposing VHL missense mutations produce less stable proteins, as posited on the basis of structure analysis. ('RCC', 'Disease', (110, 113)) ('RCC', 'Disease', 'MESH:C538614', (110, 113)) ('protein', 'Protein', (45, 52)) ('proteins', 'Protein', (170, 178)) ('reduced', 'NegReg', (12, 19)) ('pVhl', 'Gene', (40, 44)) ('VHL', 'Gene', (127, 130)) ('less', 'NegReg', (158, 162)) ('missense mutations', 'Var', (131, 149)) ('ES', 'Chemical', '-', (67, 69)) 25550 19252526 Genetic knock-out of HIF-1alpha or replacement of HIF-1alpha with HIF-2alpha in teratomas enhances tumor growth and implicates HIF-1alpha as the growth-suppressive factor in this assay. ('HIF-1alpha', 'Gene', (21, 31)) ('knock-out', 'Var', (8, 17)) ('teratoma', 'Phenotype', 'HP:0009792', (80, 88)) ('replacement', 'Var', (35, 46)) ('HIF-1alpha', 'Gene', (50, 60)) ('HIF-2alpha in teratomas enhances tumor', 'Disease', (66, 104)) ('teratomas', 'Phenotype', 'HP:0009792', (80, 89)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('HIF-2alpha in teratomas enhances tumor', 'Disease', 'MESH:D013724', (66, 104)) 25551 19252526 In our studies, Vhl-/- teratomas likewise displayed a growth disadvantage relative to wild-type and additionally featured over-expression of the joint HIF targets Vegfa and EglN3 and the HIF-1alpha-specific target Pfk1, all indicating HIF-1alpha and HIF-2alpha stabilization. ('teratomas', 'Disease', (23, 32)) ('over-expression', 'PosReg', (122, 137)) ('Pfk1', 'Gene', (214, 218)) ('HIF-1alpha and HIF-2alpha', 'Disease', 'None', (235, 260)) ('teratoma', 'Phenotype', 'HP:0009792', (23, 31)) ('Vegfa', 'Gene', '22339', (163, 168)) ('teratomas', 'Phenotype', 'HP:0009792', (23, 32)) ('EglN3', 'Var', (173, 178)) ('teratomas', 'Disease', 'MESH:D013724', (23, 32)) ('Pfk1', 'Gene', '5213', (214, 218)) ('Vegfa', 'Gene', (163, 168)) ('growth disadvantage', 'CPA', (54, 73)) 25553 19252526 The placental failure and lethality observed in Vhl2B/2B embryos at E9.5-E10.5 was consistent with severely hypomorphic mutant pVhl function in the embryonic allantoic endothelium. ('placental failure', 'Disease', 'MESH:D010922', (4, 21)) ('E9.5-E10.5', 'Var', (68, 78)) ('lethality', 'CPA', (26, 35)) ('placental failure', 'Disease', (4, 21)) ('pVhl', 'Gene', (127, 131)) ('mutant', 'Var', (120, 126)) 25557 19252526 At twelve months post-ENU, renal adenocarcinoma was observed in mutagenized Vhl2B/+ mice, representing the first demonstration of this tumor in a genetically-predisposed mouse model and validating Vhl mutation as a tumor-initiating event in the development of RCC. ('observed', 'Reg', (52, 60)) ('mutagenized', 'Var', (64, 75)) ('renal adenocarcinoma', 'Disease', (27, 47)) ('renal adenocarcinoma', 'Phenotype', 'HP:0005584', (27, 47)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('Vhl', 'Gene', (197, 200)) ('tumor', 'Disease', 'MESH:D009369', (215, 220)) ('renal adenocarcinoma', 'Disease', 'MESH:C538614', (27, 47)) ('tumor', 'Disease', (135, 140)) ('tumor', 'Phenotype', 'HP:0002664', (215, 220)) ('RCC', 'Disease', 'MESH:C538614', (260, 263)) ('mouse', 'Species', '10090', (170, 175)) ('RCC', 'Disease', (260, 263)) ('tumor', 'Disease', (215, 220)) ('mutation', 'Var', (201, 209)) ('carcinoma', 'Phenotype', 'HP:0030731', (38, 47)) ('mice', 'Species', '10090', (84, 88)) ('tumor', 'Disease', 'MESH:D009369', (135, 140)) 25558 19252526 Our gene replacement model of the representative Type 2B R167Q Vhl mutation bolsters emerging evidence that relative HIF-1alpha and HIF-2alpha protein abundance modulates the VHL Disease clinical phenotype and provides motivation for identifying the relevant genetic events involved in progressing Vhl-initiated tumors to invasive disease. ('tumors', 'Disease', (312, 318)) ('modulates', 'Reg', (161, 170)) ('tumors', 'Phenotype', 'HP:0002664', (312, 318)) ('HIF-1alpha and HIF-2alpha', 'Disease', 'None', (117, 142)) ('invasive disease', 'Disease', 'MESH:D009362', (322, 338)) ('tumors', 'Disease', 'MESH:D009369', (312, 318)) ('VHL Disease', 'Disease', (175, 186)) ('tumor', 'Phenotype', 'HP:0002664', (312, 317)) ('R167Q', 'Mutation', 'rs5030821', (57, 62)) ('invasive disease', 'Disease', (322, 338)) ('R167Q', 'Var', (57, 62)) ('Vhl', 'Gene', (63, 66)) 25559 19252526 More broadly, our Vhl gene replacement model provides a comprehensive species-congruent system for future investigations of mutant pVhl HIF and non-HIF functions underpinning human VHL Disease both in vitro and in vivo. ('human', 'Species', '9606', (175, 180)) ('mutant', 'Var', (124, 130)) ('pVhl', 'Gene', (131, 135)) 25565 19252526 The ES cells were screened at each stage by Southern blot for in vitro and in vivo studies of Type 2B mutant pVhl function. ('mutant', 'Var', (102, 108)) ('ES', 'Chemical', '-', (4, 6)) ('pVhl', 'Gene', (109, 113)) 25570 19252526 All subsequent generations were genotyped by restriction PCR utilizing PCR primers flanking a novel HpyIV restriction site introduced by the G518A Vhl mutation (Figure 1D). ('G518A', 'SUBSTITUTION', 'None', (141, 146)) ('G518A', 'Var', (141, 146)) ('Vhl', 'Gene', (147, 150)) 25579 19252526 Immunoblot primary antibodies used were: pVhl (M20 and FL181, Santa Cruz Biotechnology, Santa Cruz, CA, USA), HIF-1alpha (10006421, Cayman Chemical, Ann Arbor, MI, USA), HIF-2alpha (NB100-122, Novus Biologicals, Littleton, CO, USA), and eEF2 (Cell Signaling Technology, Danvers, MA, USA). ('10006421', 'Var', (122, 130)) ('eEF2', 'Gene', '13629', (237, 241)) ('eEF2', 'Gene', (237, 241)) 25589 19252526 Pearson's chi2 test and Fisher's exact test were used to compare development of neoplasia in wild-type versus Vhl-mutant mutagenized mice. ('mice', 'Species', '10090', (133, 137)) ('neoplasia', 'Disease', (80, 89)) ('mutagenized', 'Var', (121, 132)) ('neoplasia', 'Disease', 'MESH:D009369', (80, 89)) ('neoplasia', 'Phenotype', 'HP:0002664', (80, 89)) ('Vhl-mutant mutagenized', 'Var', (110, 132)) ('Vhl-mutant', 'Gene', (110, 120)) 25591 16103922 We show here a functional link between tumors with VHL mutations and those with disruption of the genes encoding for succinate dehydrogenase (SDH) subunits B (SDHB) and D (SDHD). ('succinate', 'Chemical', 'MESH:D019802', (117, 126)) ('tumors', 'Phenotype', 'HP:0002664', (39, 45)) ('mutations', 'Var', (55, 64)) ('SDH', 'Gene', '66925', (172, 175)) ('tumors', 'Disease', 'MESH:D009369', (39, 45)) ('SDH', 'Gene', (172, 175)) ('SDH', 'Gene', (159, 162)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('SDHD', 'Gene', '66925', (172, 176)) ('SDH', 'Gene', '66925', (159, 162)) ('SDH', 'Gene', '66925', (142, 145)) ('SDH', 'Gene', (142, 145)) ('VHL', 'Gene', (51, 54)) ('tumors', 'Disease', (39, 45)) ('SDHD', 'Gene', (172, 176)) 25594 16103922 The decrease in SDHB is also noted in tumors with SDHD mutations. ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('SDHD', 'Gene', (50, 54)) ('tumors', 'Disease', (38, 44)) ('mutations', 'Var', (55, 64)) ('tumors', 'Phenotype', 'HP:0002664', (38, 44)) ('tumors', 'Disease', 'MESH:D009369', (38, 44)) ('SDHB', 'Gene', (16, 20)) ('decrease', 'NegReg', (4, 12)) ('SDHD', 'Gene', '66925', (50, 54)) 25596 16103922 These findings explain the shared features of pheochromocytomas with VHL and SDH mutations and suggest an additional mechanism for increased HIF1alpha activity in tumors. ('SDH', 'Gene', (77, 80)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (46, 63)) ('increased', 'PosReg', (131, 140)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (46, 62)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('pheochromocytomas', 'Disease', (46, 63)) ('tumors', 'Disease', (163, 169)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (46, 63)) ('tumors', 'Disease', 'MESH:D009369', (163, 169)) ('tumors', 'Phenotype', 'HP:0002664', (163, 169)) ('mutations', 'Var', (81, 90)) ('VHL', 'Gene', (69, 72)) ('activity', 'MPA', (151, 159)) ('SDH', 'Gene', '66925', (77, 80)) 25597 16103922 Pheochromocytomas (also known as paragangliomas) are highly vascular tumors that arise from mutations in a diverse and apparently unrelated group of tumor suppressor genes and oncogenes. ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (0, 17)) ('tumor', 'Disease', 'MESH:D009369', (149, 154)) ('tumor', 'Disease', (69, 74)) ('vascular tumors', 'Phenotype', 'HP:0100742', (60, 75)) ('tumor', 'Phenotype', 'HP:0002664', (149, 154)) ('tumors', 'Phenotype', 'HP:0002664', (69, 75)) ('mutations', 'Var', (92, 101)) ('Pheochromocytomas', 'Disease', (0, 17)) ('tumors', 'Disease', (69, 75)) ('paragangliomas', 'Disease', (33, 47)) ('tumor', 'Disease', (149, 154)) ('paragangliomas', 'Disease', 'MESH:D010235', (33, 47)) ('tumors', 'Disease', 'MESH:D009369', (69, 75)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('tumor', 'Disease', 'MESH:D009369', (69, 74)) ('paraganglioma', 'Phenotype', 'HP:0002668', (33, 46)) ('paragangliomas', 'Phenotype', 'HP:0002668', (33, 47)) 25602 16103922 The authors found that loss of two genes that cause two distinct pheochromocytoma syndromes (the genes SDHB and SDHD, which encode the subunits B and D of succinate dehydrogenase, a component enzyme of the energy and respiratory system in mitochondria) also triggers a HIF1alpha response. ('SDHD', 'Gene', '66925', (112, 116)) ('SDHB', 'Gene', (103, 107)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (65, 81)) ('succinate', 'Chemical', 'MESH:D019802', (155, 164)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (65, 81)) ('SDHD', 'Gene', (112, 116)) ('rat', 'Species', '10116', (222, 225)) ('triggers', 'Reg', (258, 266)) ('pheochromocytoma', 'Disease', (65, 81)) ('loss', 'Var', (23, 27)) ('HIF1alpha response', 'MPA', (269, 287)) 25606 16103922 Pheochromocytomas can arise as a result of mutations in the following disease-associated genes: RET in multiple endocrine neoplasia type 2 (MEN2); VHL in von Hippel-Lindau disease (VHL); NF1 in neurofibromatosis type 1 (NF1); and succinate dehydrogenase (SDH) subunits B, C, or D in familial paraganglioma syndromes type 4 (PGL4), type 3 (PGL3), and type 1 (PGL1), respectively. ('familial paraganglioma syndromes', 'Disease', (283, 315)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (103, 138)) ('succinate', 'Chemical', 'MESH:D019802', (230, 239)) ('neoplasia', 'Phenotype', 'HP:0002664', (122, 131)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (154, 179)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (0, 17)) ('NF1', 'Gene', '18015', (220, 223)) ('familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (283, 315)) ('paraganglioma', 'Phenotype', 'HP:0002668', (292, 305)) ('NF1', 'Gene', '18015', (187, 190)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (112, 131)) ('SDH', 'Gene', (255, 258)) ('VHL', 'Gene', (147, 150)) ('RET', 'Gene', (96, 99)) ('NF1', 'Gene', (220, 223)) ('neurofibromatosis type 1', 'Gene', (194, 218)) ('von Hippel-Lindau disease', 'Disease', (154, 179)) ('NF1', 'Gene', (187, 190)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (194, 211)) ('Pheochromocytomas', 'Disease', (0, 17)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('multiple endocrine neoplasia type 2', 'Disease', (103, 138)) ('SDH', 'Gene', '66925', (255, 258)) ('neurofibromatosis type 1', 'Gene', '18015', (194, 218)) ('mutations', 'Var', (43, 52)) ('RET', 'Gene', '19713', (96, 99)) 25607 16103922 The various pheochromocytoma susceptibility genes modulate a variety of signaling pathways that are superficially unrelated to one another. ('modulate', 'Reg', (50, 58)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (12, 28)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (12, 28)) ('genes', 'Var', (44, 49)) ('signaling pathways', 'Pathway', (72, 90)) ('pheochromocytoma', 'Disease', (12, 28)) 25613 16103922 Familial paragangliomas associated with SDHB and SDHD mutations resemble the carotid body growths that occur as a result of chronic hypoxia exposure in individuals living at high altitudes. ('hypoxia', 'Disease', (132, 139)) ('hypoxia', 'Disease', 'MESH:D000860', (132, 139)) ('mutations', 'Var', (54, 63)) ('SDHB', 'Gene', (40, 44)) ('SDHD', 'Gene', '66925', (49, 53)) ('Familial paragangliomas', 'Disease', (0, 23)) ('paraganglioma', 'Phenotype', 'HP:0002668', (9, 22)) ('paragangliomas', 'Phenotype', 'HP:0002668', (9, 23)) ('Familial paragangliomas', 'Disease', 'MESH:D010235', (0, 23)) ('SDHD', 'Gene', (49, 53)) 25614 16103922 These clinical observations and the finding of increased expression of HIF targets in tumors with SDH mutations have suggested the possibility that the VHL and SDH syndromes intersect at the molecular level. ('SDH', 'Gene', (160, 163)) ('expression', 'MPA', (57, 67)) ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('SDH', 'Gene', (98, 101)) ('SDH', 'Gene', '66925', (98, 101)) ('tumors', 'Disease', (86, 92)) ('tumors', 'Disease', 'MESH:D009369', (86, 92)) ('tumors', 'Phenotype', 'HP:0002664', (86, 92)) ('increased', 'PosReg', (47, 56)) ('mutations', 'Var', (102, 111)) ('SDH', 'Gene', '66925', (160, 163)) 25616 16103922 We show here that pheochromocytomas with VHL and SDHB or SDHD mutations form a tight cluster with a clear hypoxia and reduced oxidoreductase signature. ('SDHB', 'Gene', (49, 53)) ('SDHD', 'Gene', '66925', (57, 61)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (18, 34)) ('oxidoreductase', 'MPA', (126, 140)) ('pheochromocytomas', 'Disease', (18, 35)) ('reduced', 'NegReg', (118, 125)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (18, 35)) ('hypoxia', 'Disease', (106, 113)) ('SDHD', 'Gene', (57, 61)) ('hypoxia', 'Disease', 'MESH:D000860', (106, 113)) ('VHL', 'Gene', (41, 44)) ('mutations', 'Var', (62, 71)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (18, 35)) 25617 16103922 This observation led to the identification of suppressed SDHB protein in tumors with VHL mutation and to the genetic demonstration that this effect is HIF-dependent. ('rat', 'Species', '10116', (124, 127)) ('tumors', 'Disease', 'MESH:D009369', (73, 79)) ('protein', 'Protein', (62, 69)) ('VHL', 'Gene', (85, 88)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('mutation', 'Var', (89, 97)) ('tumors', 'Phenotype', 'HP:0002664', (73, 79)) ('SDHB', 'Gene', (57, 61)) ('tumors', 'Disease', (73, 79)) ('suppressed', 'NegReg', (46, 56)) 25618 16103922 Our findings link pheochromocytomas with mutations in distinct genes:VHL, SDHB, and SDHD:and suggest that mitochondrial complex II inhibition contributes to development of pheochromocytomas with VHL mutation. ('mutations', 'Var', (41, 50)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (172, 189)) ('SDHD', 'Gene', '66925', (84, 88)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (172, 188)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (18, 34)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (18, 35)) ('pheochromocytomas', 'Disease', (18, 35)) ('pheochromocytomas', 'Disease', (172, 189)) ('SDHB', 'Gene', (74, 78)) ('SDHD', 'Gene', (84, 88)) ('mutation', 'Var', (199, 207)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (18, 35)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (172, 189)) ('VHL', 'Gene', (69, 72)) ('VHL', 'Gene', (195, 198)) ('mitochondrial complex II', 'Enzyme', (106, 130)) ('inhibition', 'NegReg', (131, 141)) 25625 16103922 Next, we sequenced all familial samples and also 20 of the sporadic tumors for mutations in known pheochromocytoma-associated genes. ('tumors', 'Phenotype', 'HP:0002664', (68, 74)) ('pheochromocytoma', 'Disease', (98, 114)) ('sporadic tumors', 'Disease', 'MESH:D009369', (59, 74)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (98, 114)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (98, 114)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('sporadic tumors', 'Disease', (59, 74)) ('mutations', 'Var', (79, 88)) 25626 16103922 We detected novel VHL, SDHB, and RET mutations in six samples derived from four independent families (Table 1). ('RET', 'Gene', (33, 36)) ('RET', 'Gene', '19713', (33, 36)) ('mutations', 'Var', (37, 46)) ('SDHB', 'Gene', (23, 27)) ('VHL', 'Gene', (18, 21)) 25628 16103922 Likewise, gene predictors were also created by comparing MEN2 and another component of Cluster 1, SDH tumors (including both SDHB and SDHD mutants). ('tumors', 'Phenotype', 'HP:0002664', (102, 108)) ('SDHD', 'Gene', '66925', (134, 138)) ('SDH tumors', 'Disease', 'MESH:D009369', (98, 108)) ('SDHD', 'Gene', (134, 138)) ('mutants', 'Var', (139, 146)) ('SDH tumors', 'Disease', (98, 108)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) 25636 16103922 The similar transcription profile of pheochromocytomas with mutations in SDH subunits indicates that the mechanism by which these tumors develop also involves the hypoxia-sensing pathway. ('tumors', 'Disease', (130, 136)) ('tumors', 'Disease', 'MESH:D009369', (130, 136)) ('tumors', 'Phenotype', 'HP:0002664', (130, 136)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (37, 54)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (37, 53)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('SDH', 'Gene', '66925', (73, 76)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (37, 54)) ('hypoxia', 'Disease', 'MESH:D000860', (163, 170)) ('SDH', 'Gene', (73, 76)) ('mutations', 'Var', (60, 69)) ('pheochromocytomas', 'Disease', (37, 54)) ('hypoxia', 'Disease', (163, 170)) 25641 16103922 Mitochondrial complex II is a component of the electron transport chain, and mutations of SDHB or SDHD genes that abrogate the oxidoreductase function of complex II can cause pheochromocytomas. ('abrogate', 'NegReg', (114, 122)) ('SDHD', 'Gene', '66925', (98, 102)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (175, 192)) ('SDHB', 'Gene', (90, 94)) ('pheochromocytomas', 'Disease', (175, 192)) ('cause', 'Reg', (169, 174)) ('mutations', 'Var', (77, 86)) ('SDHD', 'Gene', (98, 102)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (175, 192)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (175, 191)) ('oxidoreductase function', 'MPA', (127, 150)) 25642 16103922 Because of the role of SDH subunits as tumor suppressors, we reasoned that the oxidoreductase signature observed in pheochromocytomas from Cluster 1 (Table 2) might indicate that complex II disruption could contribute to other tumors besides those with SDH mutations. ('mutations', 'Var', (257, 266)) ('tumor', 'Disease', (227, 232)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('tumor', 'Disease', 'MESH:D009369', (227, 232)) ('SDH', 'Gene', '66925', (23, 26)) ('SDH', 'Gene', '66925', (253, 256)) ('tumors', 'Phenotype', 'HP:0002664', (227, 233)) ('oxidoreductase', 'MPA', (79, 93)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (116, 132)) ('pheochromocytomas', 'Disease', (116, 133)) ('tumor', 'Phenotype', 'HP:0002664', (227, 232)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (116, 133)) ('tumors', 'Disease', (227, 233)) ('tumor', 'Disease', (39, 44)) ('SDH', 'Gene', (253, 256)) ('SDH', 'Gene', (23, 26)) ('contribute', 'Reg', (207, 217)) ('tumor', 'Disease', 'MESH:D009369', (39, 44)) ('tumors', 'Disease', 'MESH:D009369', (227, 233)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (116, 133)) 25643 16103922 This prompted us to examine the link between pheochromocytomas with VHL and SDH mutations in our series by first determining the protein expression of the catalytic unit of complex II, SDHB. ('pheochromocytomas', 'Disease', 'MESH:D010673', (45, 62)) ('mutations', 'Var', (80, 89)) ('pheochromocytomas', 'Disease', (45, 62)) ('SDH', 'Gene', (185, 188)) ('VHL', 'Gene', (68, 71)) ('SDH', 'Gene', '66925', (185, 188)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (45, 62)) ('SDH', 'Gene', (76, 79)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (45, 61)) ('SDH', 'Gene', '66925', (76, 79)) 25644 16103922 We found that the expression of SDHB is reduced in all tumors with SDH (both SDHB and SDHD) mutations in this cohort (Figure 3A), indicating that low SDHB expression functions as a surrogate for disruption of complex II. ('SDH', 'Gene', '66925', (150, 153)) ('tumors', 'Phenotype', 'HP:0002664', (55, 61)) ('SDH', 'Gene', '66925', (86, 89)) ('SDH', 'Gene', '66925', (77, 80)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('reduced', 'NegReg', (40, 47)) ('tumors', 'Disease', (55, 61)) ('expression', 'MPA', (18, 28)) ('SDH', 'Gene', (67, 70)) ('SDH', 'Gene', (32, 35)) ('SDH', 'Gene', '66925', (67, 70)) ('SDHD', 'Gene', '66925', (86, 90)) ('SDH', 'Gene', (150, 153)) ('mutations', 'Var', (92, 101)) ('SDH', 'Gene', (86, 89)) ('tumors', 'Disease', 'MESH:D009369', (55, 61)) ('SDH', 'Gene', (77, 80)) ('SDHD', 'Gene', (86, 90)) ('SDH', 'Gene', '66925', (32, 35)) 25645 16103922 Importantly, suppressed SDHB levels were also found in the majority of tumors with VHL mutations and sporadic pheochromocytomas from Cluster 1 tested by immunoblots (Figure 3B). ('pheochromocytoma', 'Phenotype', 'HP:0002666', (110, 126)) ('suppressed', 'NegReg', (13, 23)) ('SDHB levels', 'MPA', (24, 35)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (110, 127)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (110, 127)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('tumors', 'Disease', 'MESH:D009369', (71, 77)) ('pheochromocytomas', 'Disease', (110, 127)) ('tumors', 'Disease', (71, 77)) ('mutations', 'Var', (87, 96)) ('VHL', 'Gene', (83, 86)) 25653 16103922 Further, transient expression of a mutant, nondegradable form of HIF1alpha, HIF1alphaP402A/P564A, was able to downregulate SDHB (Figure 4B). ('SDHB', 'Gene', (123, 127)) ('downregulate', 'NegReg', (110, 122)) ('HIF1alphaP402A/P564A', 'Var', (76, 96)) ('P564A', 'Mutation', 'p.P564A', (91, 96)) 25657 16103922 Transcription profiling of a large series of primary pheochromocytomas reveals that tumors with VHL and SDH mutations are closely linked. ('mutations', 'Var', (108, 117)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (53, 70)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('SDH', 'Gene', (104, 107)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (53, 69)) ('VHL', 'Gene', (96, 99)) ('tumors', 'Disease', (84, 90)) ('tumors', 'Disease', 'MESH:D009369', (84, 90)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (53, 70)) ('SDH', 'Gene', '66925', (104, 107)) ('pheochromocytomas', 'Disease', (53, 70)) ('tumors', 'Phenotype', 'HP:0002664', (84, 90)) 25658 16103922 The hypoxia-angiogenesis signature identified by our analysis of primary tumors with SDHB or SDHD mutations confirms and extends recent observations on the role of SDH proteins in cultured cell lines. ('SDHD', 'Gene', (93, 97)) ('SDH', 'Gene', '66925', (85, 88)) ('SDH', 'Gene', '66925', (164, 167)) ('SDH', 'Gene', (85, 88)) ('SDH', 'Gene', (164, 167)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('SDHD', 'Gene', '66925', (93, 97)) ('primary tumors', 'Disease', (65, 79)) ('primary tumors', 'Disease', 'MESH:D009369', (65, 79)) ('mutations', 'Var', (98, 107)) ('hypoxia', 'Disease', 'MESH:D000860', (4, 11)) ('tumors', 'Phenotype', 'HP:0002664', (73, 79)) ('SDH', 'Gene', '66925', (93, 96)) ('hypoxia', 'Disease', (4, 11)) ('SDH', 'Gene', (93, 96)) 25659 16103922 Our data show that mitochondrial complex II mutations lead to upregulation of HIF1alpha targets in human tumor tissue and indicate an additional level of interplay between the SDHB and HIF1alpha proteins, i.e., a reciprocal effect of HIF1alpha in modulating components of the mitochondrial complex II. ('mitochondrial complex II', 'Gene', (19, 43)) ('tumor', 'Disease', 'MESH:D009369', (105, 110)) ('interplay', 'Interaction', (154, 163)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('mutations', 'Var', (44, 53)) ('tumor', 'Disease', (105, 110)) ('human', 'Species', '9606', (99, 104)) ('upregulation', 'PosReg', (62, 74)) 25664 16103922 One provocative possibility suggested by these findings is that the tumorigenic effects of VHL mutations in chromaffin tissue might involve dysfunction of mitochondrial complex II. ('tumor', 'Disease', (68, 73)) ('dysfunction', 'MPA', (140, 151)) ('mitochondrial complex II', 'Enzyme', (155, 179)) ('VHL', 'Gene', (91, 94)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('chromaffin', 'Chemical', '-', (108, 118)) ('mutations', 'Var', (95, 104)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) 25666 16103922 The effects of HIF1alpha in our model were less marked than those observed with hypoxia-mimetic agents, which inhibit prolyl hydroxylases. ('hypoxia', 'Disease', (80, 87)) ('hypoxia', 'Disease', 'MESH:D000860', (80, 87)) ('HIF1alpha', 'Var', (15, 24)) 25668 16103922 Also, clinical similarities besides pheochromocytoma have been noted in families with germline mutations of VHL and SDHB. ('pheochromocytoma', 'Disease', (36, 52)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (36, 52)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (36, 52)) ('SDHB', 'Gene', (116, 120)) ('mutations', 'Var', (95, 104)) ('VHL', 'Gene', (108, 111)) 25670 16103922 We also showed that this distribution has high predictive value, as determined by the identification of previously undetected mutations in tumor samples segregating with the appropriate cluster. ('tumor', 'Disease', (139, 144)) ('tumor', 'Disease', 'MESH:D009369', (139, 144)) ('tumor', 'Phenotype', 'HP:0002664', (139, 144)) ('mutations', 'Var', (126, 135)) 25672 16103922 Of interest, in a recent study, immunohistochemistry of head and neck paragangliomas with SDHB and SDHD mutations revealed similar suppression of SDHB, which was accompanied by morphologically abnormal mitochondria. ('neck paragangliomas', 'Disease', 'MESH:D010235', (65, 84)) ('mutations', 'Var', (104, 113)) ('SDHB', 'Gene', (90, 94)) ('SDHB', 'Gene', (146, 150)) ('SDHD', 'Gene', '66925', (99, 103)) ('suppression', 'NegReg', (131, 142)) ('paraganglioma', 'Phenotype', 'HP:0002668', (70, 83)) ('paragangliomas', 'Phenotype', 'HP:0002668', (70, 84)) ('neck paragangliomas', 'Disease', (65, 84)) ('SDHD', 'Gene', (99, 103)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (56, 84)) 25674 16103922 This study also describes a number of sporadic head and neck paragangliomas with low SDHB staining; these tumors might correspond with Cluster 1 pheochromocytomas for which no detectable mutation was identified and that also appear to arise from disruption of related pathways. ('tumors', 'Phenotype', 'HP:0002664', (106, 112)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (145, 162)) ('low', 'NegReg', (81, 84)) ('paraganglioma', 'Phenotype', 'HP:0002668', (61, 74)) ('staining', 'Var', (90, 98)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (56, 75)) ('tumors', 'Disease', (106, 112)) ('tumors', 'Disease', 'MESH:D009369', (106, 112)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (47, 75)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (145, 161)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (145, 162)) ('SDHB', 'Gene', (85, 89)) ('pheochromocytomas', 'Disease', (145, 162)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('neck paragangliomas', 'Disease', (56, 75)) ('paragangliomas', 'Phenotype', 'HP:0002668', (61, 75)) 25675 16103922 It remains to be tested whether the predominant hypoxic-angiogenic profile of pheochromocytomas with VHL and SDH mutations will render these tumors targets for antiangiogenic therapies. ('VHL', 'Gene', (101, 104)) ('SDH', 'Gene', '66925', (109, 112)) ('SDH', 'Gene', (109, 112)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('tumors', 'Disease', (141, 147)) ('tumors', 'Disease', 'MESH:D009369', (141, 147)) ('tumors', 'Phenotype', 'HP:0002664', (141, 147)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (78, 94)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (78, 95)) ('mutations', 'Var', (113, 122)) ('pheochromocytomas', 'Disease', (78, 95)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (78, 95)) 25682 16103922 In all, 76 catecholamine-secreting pheochromocytomas or paragangliomas representing well-characterized hereditary variants cited above, familial tumors of undetermined genetic cause, and sporadic tumors were included in this study (see Dataset S1). ('tumors', 'Phenotype', 'HP:0002664', (196, 202)) ('catecholamine', 'Chemical', 'MESH:D002395', (11, 24)) ('sporadic tumors', 'Disease', (187, 202)) ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('paragangliomas', 'Phenotype', 'HP:0002668', (56, 70)) ('tumors', 'Phenotype', 'HP:0002664', (145, 151)) ('variants', 'Var', (114, 122)) ('familial tumors', 'Disease', 'MESH:D009386', (136, 151)) ('paraganglioma', 'Phenotype', 'HP:0002668', (56, 69)) ('pheochromocytomas or paragangliomas', 'Disease', (35, 70)) ('familial tumors', 'Disease', (136, 151)) ('pheochromocytomas or paragangliomas', 'Disease', 'MESH:D010673', (35, 70)) ('sporadic tumors', 'Disease', 'MESH:D009369', (187, 202)) ('tumor', 'Phenotype', 'HP:0002664', (196, 201)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (35, 51)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (35, 52)) 25686 16103922 No head or neck paragangliomas or tumors with SDHC mutations were included in this series. ('SDHC', 'Gene', '66052', (46, 50)) ('mutations', 'Var', (51, 60)) ('tumors', 'Phenotype', 'HP:0002664', (34, 40)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('neck paragangliomas or tumors', 'Disease', 'MESH:D010235', (11, 40)) ('head or neck paragangliomas', 'Phenotype', 'HP:0002864', (3, 30)) ('neck paragangliomas or tumors', 'Disease', (11, 40)) ('SDHC', 'Gene', (46, 50)) ('paraganglioma', 'Phenotype', 'HP:0002668', (16, 29)) ('paragangliomas', 'Phenotype', 'HP:0002668', (16, 30)) 25714 16103922 A HIF1alpha double mutant (P402A/P564A) that is resistant to VHL-mediated proteasome degradation was generated by site-directed mutagenesis (Quick Change, Stratagene, La Jolla, California, United States) and cloned into p3X-FLAG vector (Sigma). ('HIF1alpha', 'Gene', (2, 11)) ('P564A', 'Mutation', 'p.P564A', (33, 38)) ('rat', 'Species', '10116', (105, 108)) ('rat', 'Species', '10116', (157, 160)) ('P402A', 'Var', (27, 32)) ('P402A', 'SUBSTITUTION', 'None', (27, 32)) 25715 16103922 HEK293 cells were transfected with the HIF1alpha P402A/P564A double mutant or an empty vector using Lipofectamine 2000, as recommended by the manufacturer (Invitrogen). ('HIF1alpha', 'Gene', (39, 48)) ('P564A', 'Mutation', 'p.P564A', (55, 60)) ('HEK293', 'CellLine', 'CVCL:0045', (0, 6)) ('Lipofectamine 2000', 'Chemical', 'MESH:C086724', (100, 118)) ('P402A', 'SUBSTITUTION', 'None', (49, 54)) ('P402A', 'Var', (49, 54)) 25719 16103922 A2058 melanoma cells stably expressing HIF1alpha shRNA (FSIPPW-HIF) or control pEGFP shRNA (FSIPPW-EGFP) were cultured in DMEM, 10% FBS, and 2 mug/ml puromycin. ('DMEM', 'Chemical', '-', (122, 126)) ('FSIPPW-HIF', 'Disease', 'None', (56, 66)) ('A2058', 'CellLine', 'CVCL:1059', (0, 5)) ('HIF1alpha shRNA', 'Var', (39, 54)) ('puromycin', 'Chemical', 'MESH:D011691', (150, 159)) ('melanoma', 'Phenotype', 'HP:0002861', (6, 14)) ('melanoma', 'Disease', (6, 14)) ('FSIPPW-HIF', 'Disease', (56, 66)) ('melanoma', 'Disease', 'MESH:D008545', (6, 14)) 25751 33820394 PPGLs associated with SDHB mutation have a high risk of metastases (B). ('metastases', 'Disease', 'MESH:D009362', (56, 66)) ('PPGLs', 'Chemical', '-', (0, 5)) ('SDHB', 'Gene', (22, 26)) ('mutation', 'Var', (27, 35)) ('metastases', 'Disease', (56, 66)) ('PGLs', 'Phenotype', 'HP:0002668', (1, 5)) 25760 33820394 If not recognized, PPGLs can severely affect the cardiovascular, gastrointestinal, and other systems, and can threaten patients by causing such as fatal arrhythmia, myocardial infarction, cerebrovascular events, and sudden death. ('PPGLs', 'Chemical', '-', (19, 24)) ('threaten', 'Reg', (110, 118)) ('cerebrovascular events', 'Phenotype', 'HP:0001297', (188, 210)) ('sudden death', 'Disease', (216, 228)) ('gastrointestinal', 'MPA', (65, 81)) ('sudden death', 'Disease', 'MESH:D003645', (216, 228)) ('myocardial infarction', 'Disease', (165, 186)) ('causing', 'Reg', (131, 138)) ('cardiovascular', 'MPA', (49, 63)) ('PGLs', 'Phenotype', 'HP:0002668', (20, 24)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (165, 186)) ('arrhythmia', 'Disease', 'MESH:D001145', (153, 163)) ('arrhythmia', 'Phenotype', 'HP:0011675', (153, 163)) ('arrhythmia', 'Disease', (153, 163)) ('myocardial infarction', 'Disease', 'MESH:D009203', (165, 186)) ('patients', 'Species', '9606', (119, 127)) ('cerebrovascular events', 'Disease', (188, 210)) ('PPGLs', 'Var', (19, 24)) ('affect', 'Reg', (38, 44)) 25829 33820394 In addition, succinate dehydrogenase B (SDHB) mutant PPGL showed increased production of dopamine in the tumor metabolomics and had high plasma and urinary dopamine and plasma 3-methoxytyramine levels. ('succinate dehydrogenase B', 'Gene', (13, 38)) ('increased', 'PosReg', (65, 74)) ('dopamine', 'Chemical', 'MESH:D004298', (89, 97)) ('succinate dehydrogenase B', 'Gene', '6390', (13, 38)) ('PPGL', 'Chemical', '-', (53, 57)) ('SDHB', 'Gene', (40, 44)) ('PPGL', 'Gene', (53, 57)) ('tumor', 'Disease', 'MESH:D009369', (105, 110)) ('dopamine', 'Chemical', 'MESH:D004298', (156, 164)) ('mutant', 'Var', (46, 52)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (176, 193)) ('tumor', 'Disease', (105, 110)) ('high', 'PosReg', (132, 136)) 25830 33820394 SDHB mutation confers a high risk of metastases, which, at least partly, explains the high risk of metastases in PPGL with elevated dopamine and 3-methoxytyramine. ('dopamine', 'MPA', (132, 140)) ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (145, 162)) ('PPGL', 'Chemical', '-', (113, 117)) ('metastases', 'Disease', (37, 47)) ('dopamine', 'Chemical', 'MESH:D004298', (132, 140)) ('elevated', 'PosReg', (123, 131)) ('metastases', 'Disease', (99, 109)) ('SDHB', 'Gene', (0, 4)) ('metastases', 'Disease', 'MESH:D009362', (37, 47)) ('mutation', 'Var', (5, 13)) ('metastases', 'Disease', 'MESH:D009362', (99, 109)) ('3-methoxytyramine', 'MPA', (145, 162)) 25839 33820394 CT is preferred to MRI for the detection of lung metastases, while MRI shows better sensitivity between 90% and 95% for detecting skull base and neck PGLs than CT. MRI is also preferred in patients with an allergy to CT contrast agent, and in patients in whom radiation exposure should be limited (i.e., children, pregnant women, patients with known germline mutations, and those with recent excessive radiation exposure). ('patients', 'Species', '9606', (243, 251)) ('germline mutations', 'Var', (350, 368)) ('children', 'Species', '9606', (304, 312)) ('PGLs', 'Phenotype', 'HP:0002668', (150, 154)) ('allergy', 'Disease', (206, 213)) ('lung metastases', 'Disease', (44, 59)) ('patients', 'Species', '9606', (330, 338)) ('lung metastases', 'Disease', 'MESH:D009362', (44, 59)) ('allergy', 'Phenotype', 'HP:0012393', (206, 213)) ('patients', 'Species', '9606', (189, 197)) ('women', 'Species', '9606', (323, 328)) ('allergy', 'Disease', 'MESH:D004342', (206, 213)) 25846 33820394 The elevated clinical value of 68Ga-DOTA-SSA PET/CT is also observed in extra-adrenal PGLs and head and neck PGLs. ('68Ga-DOTA-SSA', 'Chemical', '-', (31, 44)) ('PGLs', 'Phenotype', 'HP:0002668', (109, 113)) ('68Ga-DOTA-SSA', 'Var', (31, 44)) ('PGLs', 'Phenotype', 'HP:0002668', (86, 90)) ('extra-adrenal PGLs', 'Disease', (72, 90)) 25848 33820394 In PPGLs with underlying SDHx mutations, 68Ga-DOTA-SSA PET/CT can be recommended. ('SDH', 'Gene', (25, 28)) ('PGLs', 'Phenotype', 'HP:0002668', (4, 8)) ('mutations', 'Var', (30, 39)) ('PPGLs', 'Chemical', '-', (3, 8)) ('68Ga-DOTA-SSA', 'Chemical', '-', (41, 54)) ('SDH', 'Gene', '6390', (25, 28)) 25849 33820394 In contrast to SDHx-related PPGLs, 18F-DOPA PET/CT showed high tumor uptake in von Hippel-Lindau (VHL), rearranged during transfection (RET), neurofibromatosis 1 (NF1), myc-associated protein X (MAX), hypoxia-inducible factor (HIF) 2A, prolyl hydroxylase (PHD)1/2, and fumarate hydratase (FH) mutated PPGLs. ('neurofibromatosis 1', 'Gene', '4763', (142, 161)) ('MAX', 'Gene', (195, 198)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (142, 159)) ('mutated', 'Var', (293, 300)) ('von Hippel-Lindau', 'Gene', '7428', (79, 96)) ('PGLs', 'Phenotype', 'HP:0002668', (302, 306)) ('SDH', 'Gene', '6390', (15, 18)) ('neurofibromatosis 1', 'Gene', (142, 161)) ('PPGLs', 'Gene', (301, 306)) ('fumarate hydratase', 'Gene', '2271', (269, 287)) ('PGLs', 'Phenotype', 'HP:0002668', (29, 33)) ('tumor', 'Disease', (63, 68)) ('PPGLs', 'Chemical', '-', (301, 306)) ('FH', 'Gene', '2271', (289, 291)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('prolyl hydroxylase (PHD)1/2', 'Gene', '112398;54583', (236, 263)) ('hypoxia-inducible factor (HIF) 2A', 'Gene', '2034', (201, 234)) ('prolyl hydroxylase (PHD)1/2', 'Gene', (236, 263)) ('SDH', 'Gene', (15, 18)) ('von Hippel-Lindau', 'Gene', (79, 96)) ('MAX', 'Gene', '60661', (195, 198)) ('PPGLs', 'Chemical', '-', (28, 33)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('fumarate hydratase', 'Gene', (269, 287)) ('18F-DOPA', 'Chemical', 'MESH:C043437', (35, 43)) 25856 33820394 177Lu, 90Y, 225Ac-labeled DOTA-D-Phe1-Tyr3-octreotide (TOC) and DOTA-0-Tyr3-octreotate (TATE) is the currently available PRRT as compassionate or off-label use. ('TATE', 'Chemical', '-', (88, 92)) ('DOTA-D-Phe1-Tyr3-octreotide', 'Chemical', '-', (26, 53)) ('225Ac', 'Chemical', 'MESH:C000615155', (12, 17)) ('DOTA-D-Phe1-Tyr3-octreotide', 'Var', (26, 53)) ('90Y', 'Var', (7, 10)) ('TOC', 'Chemical', '-', (55, 58)) ('DOTA-0-Tyr3-octreotate', 'Chemical', '-', (64, 86)) 25874 33820394 Pathogenic germline variants in any of the SDHx subunit genes (SDHA/B/C/D) have been implicated in hereditary tumorigenesis of PPGLs. ('SDH', 'Gene', '6390', (63, 66)) ('variants', 'Var', (20, 28)) ('SDH', 'Gene', (43, 46)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('SDH', 'Gene', (63, 66)) ('implicated', 'Reg', (85, 95)) ('PPGLs', 'Chemical', '-', (127, 132)) ('hereditary tumor', 'Disease', 'MESH:D030342', (99, 115)) ('SDH', 'Gene', '6390', (43, 46)) ('PGLs', 'Phenotype', 'HP:0002668', (128, 132)) ('hereditary tumor', 'Disease', (99, 115)) ('PPGLs', 'Disease', (127, 132)) 25876 33820394 Germline mutations of SDHB have been widely accepted as a high-risk factor for metastases, leading to metastatic PPGLs in 40% or more of affected patients. ('Germline mutations', 'Var', (0, 18)) ('metastases', 'Disease', 'MESH:D009362', (79, 89)) ('PGLs', 'Phenotype', 'HP:0002668', (114, 118)) ('leading to', 'Reg', (91, 101)) ('PPGLs', 'Chemical', '-', (113, 118)) ('SDHB', 'Gene', (22, 26)) ('metastases', 'Disease', (79, 89)) ('metastatic PPGLs', 'Disease', (102, 118)) ('patients', 'Species', '9606', (146, 154)) 25877 33820394 Furthermore, SDHB germline mutation is a poor prognostic factor in patients with metastatic PPGLs. ('PPGLs', 'Chemical', '-', (92, 97)) ('metastatic PPGLs', 'Disease', (81, 97)) ('patients', 'Species', '9606', (67, 75)) ('SDHB', 'Gene', (13, 17)) ('PGLs', 'Phenotype', 'HP:0002668', (93, 97)) ('germline mutation', 'Var', (18, 35)) 25878 33820394 In terms of the 5-year probability of survival after the diagnosis of the first metastases were 0.36 (0.15 to 0.57) in SDHB mutation carriers and 0.67 (0.47 to 0.81) in the absence of SDHB mutation (relative risk, 2.6; P=0.019). ('metastases', 'Disease', (80, 90)) ('SDHB', 'Gene', (184, 188)) ('metastases', 'Disease', 'MESH:D009362', (80, 90)) ('SDHB', 'Gene', (119, 123)) ('mutation', 'Var', (124, 132)) 25880 33820394 Therefore, loss of SDHB IHC staining in tumoral tissue suggests the presence of germline mutations in one of the SDHx genes with 100% sensitivity and 84% specificity. ('SDH', 'Gene', (113, 116)) ('SDH', 'Gene', (19, 22)) ('tumoral', 'Disease', (40, 47)) ('tumoral', 'Disease', 'MESH:D009369', (40, 47)) ('mutations', 'Var', (89, 98)) ('SDH', 'Gene', '6390', (113, 116)) ('SDH', 'Gene', '6390', (19, 22)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) 25889 33820394 Second, about 40% or more of patients with SDHB mutation have metastatic phenotype as the principal predictor of malignancy in PPGL patients. ('malignancy', 'Disease', (113, 123)) ('patients', 'Species', '9606', (29, 37)) ('PPGL', 'Chemical', '-', (127, 131)) ('mutation', 'Var', (48, 56)) ('SDHB', 'Gene', (43, 47)) ('malignancy', 'Disease', 'MESH:D009369', (113, 123)) ('patients', 'Species', '9606', (132, 140)) 25891 33820394 Fourth, about 11% to 13% of patients with apparently sporadic PPGLs such as single benign PPGL without a family history have a mutation in susceptibility genes according to a meta-analysis. ('PPGL', 'Chemical', '-', (90, 94)) ('PPGLs', 'Disease', (62, 67)) ('mutation', 'Var', (127, 135)) ('PGLs', 'Phenotype', 'HP:0002668', (63, 67)) ('PPGLs', 'Chemical', '-', (62, 67)) ('PPGL', 'Chemical', '-', (62, 66)) ('patients', 'Species', '9606', (28, 36)) 25897 33820394 Moreover, as techniques for genetic testing have been advanced, higher mutation discovery rates and a better understanding of the clinical phenotypes of PPGLs have been achieved. ('PPGLs', 'Chemical', '-', (153, 158)) ('PPGLs', 'Gene', (153, 158)) ('mutation', 'Var', (71, 79)) ('higher', 'PosReg', (64, 70)) ('PGLs', 'Phenotype', 'HP:0002668', (154, 158)) ('rat', 'Species', '10116', (90, 93)) 25906 33820394 A study about the diagnostic methods of PPGLs demonstrated that NGS assay significantly improved the performances of PPGL genetic testing compared with conventional methods with a higher rate of the identified mutation. ('PPGL', 'Gene', (117, 121)) ('rat', 'Species', '10116', (187, 190)) ('PPGL', 'Chemical', '-', (40, 44)) ('genetic testing', 'Var', (122, 137)) ('performances', 'MPA', (101, 113)) ('PPGLs', 'Chemical', '-', (40, 45)) ('PGLs', 'Phenotype', 'HP:0002668', (41, 45)) ('rat', 'Species', '10116', (53, 56)) ('improved', 'PosReg', (88, 96)) ('PPGL', 'Chemical', '-', (117, 121)) 25909 33820394 Recently, a study with the largest number of Korean PPGL patients (n=161) reported that approximately 21% of sporadic PPGLs without any family history still harbored germline mutation of the PPGL-related genes. ('PPGL', 'Chemical', '-', (191, 195)) ('PPGLs', 'Chemical', '-', (118, 123)) ('PPGL', 'Chemical', '-', (118, 122)) ('harbored', 'Reg', (157, 165)) ('patients', 'Species', '9606', (57, 65)) ('PGLs', 'Phenotype', 'HP:0002668', (119, 123)) ('PPGL-related', 'Gene', (191, 203)) ('germline mutation', 'Var', (166, 183)) ('PPGL', 'Chemical', '-', (52, 56)) 25912 33820394 In this study, among 57 patients with PPGLs, 28 different germline mutations were identified in 11 susceptibility genes (EPAS1, KIF1B, MAX, NF1, RET, SDHA, SDHB, SDHC, SDHD, TMEM127, and VHL). ('VHL', 'Gene', (187, 190)) ('PGLs', 'Phenotype', 'HP:0002668', (39, 43)) ('SDHA', 'Gene', (150, 154)) ('SDHB', 'Gene', (156, 160)) ('mutations', 'Var', (67, 76)) ('SDHC', 'Gene', (162, 166)) ('NF1', 'Gene', (140, 143)) ('PPGLs', 'Chemical', '-', (38, 43)) ('MAX', 'Gene', (135, 138)) ('TMEM127', 'Gene', (174, 181)) ('KIF1B', 'Gene', (128, 133)) ('patients', 'Species', '9606', (24, 32)) ('EPAS1', 'Gene', (121, 126)) ('SDHD', 'Gene', (168, 172)) ('MAX', 'Gene', '60661', (135, 138)) 25940 33364876 In the recent prospective randomized study, although phenoxybenzamine was more effective in preventing intraoperative hemodynamic instability than doxazosin, it was not been established whether this was related to better clinical outcomes. ('doxazosin', 'Chemical', 'MESH:D017292', (147, 156)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (53, 69)) ('preventing intraoperative hemodynamic instability', 'MPA', (92, 141)) ('phenoxybenzamine', 'Var', (53, 69)) 25946 33364876 However, recent data suggest that the use of metyrosine in combination with preoperative phenoxybenzamine may reduce intraoperative hemodynamic instability and postoperative cardiovascular problems. ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (89, 105)) ('cardiovascular problems', 'Phenotype', 'HP:0001626', (174, 197)) ('metyrosine', 'Chemical', 'MESH:D019805', (45, 55)) ('postoperative cardiovascular problems', 'Disease', 'MESH:D002318', (160, 197)) ('intraoperative hemodynamic instability', 'MPA', (117, 155)) ('postoperative cardiovascular problems', 'Disease', (160, 197)) ('metyrosine', 'Var', (45, 55)) ('reduce', 'NegReg', (110, 116)) 25952 33364876 Tachycardia is less common in those who use selective alpha-blockers, but especially in patients who use phenoxybenzamine, additional beta-adrenergic receptor blockade is often required for tachycardia control. ('tachycardia', 'Disease', 'MESH:D013610', (190, 201)) ('Tachycardia', 'Phenotype', 'HP:0001649', (0, 11)) ('patients', 'Species', '9606', (88, 96)) ('phenoxybenzamine', 'Var', (105, 121)) ('Tachycardia', 'Disease', 'MESH:D013610', (0, 11)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (105, 121)) ('tachycardia', 'Phenotype', 'HP:0001649', (190, 201)) ('tachycardia', 'Disease', (190, 201)) ('Tachycardia', 'Disease', (0, 11)) 25973 33364876 Reactive hypoglycemia may occur after PPGL resections, although not very often. ('hypoglycemia', 'Phenotype', 'HP:0001943', (9, 21)) ('resections', 'Var', (43, 53)) ('PGL', 'Phenotype', 'HP:0002668', (39, 42)) ('hypoglycemia', 'Disease', (9, 21)) ('hypoglycemia', 'Disease', 'MESH:D007003', (9, 21)) ('PPGL', 'Chemical', '-', (38, 42)) ('PPGL', 'Gene', (38, 42)) ('Reactive hypoglycemia', 'Phenotype', 'HP:0012051', (0, 21)) 25994 33364876 Preoperative knowledge of the type of preoperative germline mutation in PPGL affects the type of surgical approach and the extension of adrenalectomy. ('germline mutation', 'Var', (51, 68)) ('affects', 'Reg', (77, 84)) ('PPGL', 'Chemical', '-', (72, 76)) ('PGL', 'Phenotype', 'HP:0002668', (73, 76)) ('PPGL', 'Gene', (72, 76)) 25995 33364876 Open adrenalectomy may be preferred in patients with SDHB, TMEM127 or FH germline mutations, as the risk of extra-adrenal disease, metastatic disease or recurrence risk is higher than in patients with NF1, RET or VHL germline mutations. ('RET', 'Gene', '5979', (206, 209)) ('NF1', 'Gene', '4763', (201, 204)) ('patients', 'Species', '9606', (187, 195)) ('SDHB', 'Gene', '6390', (53, 57)) ('patients', 'Species', '9606', (39, 47)) ('extra-adrenal disease', 'Disease', (108, 129)) ('metastatic', 'CPA', (131, 141)) ('FH', 'Disease', 'MESH:D006938', (70, 72)) ('RET', 'Gene', (206, 209)) ('SDHB', 'Gene', (53, 57)) ('VHL', 'Gene', (213, 216)) ('mutations', 'Var', (82, 91)) ('VHL', 'Gene', '7428', (213, 216)) ('extra-adrenal disease', 'Disease', 'MESH:D010236', (108, 129)) ('TMEM127', 'Gene', '55654', (59, 66)) ('adrenal disease', 'Phenotype', 'HP:0000834', (114, 129)) ('NF1', 'Gene', (201, 204)) ('TMEM127', 'Gene', (59, 66)) 25997 33364876 In metastatic diseases, metastases occur primarily in lymph nodes; therefore, locoregional lymph node dissection should be performed together with primary tumor during laparotomy, in patients in whom lymph node metastasis is detected in preoperative imaging or during the intraoperative evaluation, or in patients with a high risk of lymph node metastasis, such as SDHB germline mutation. ('SDHB', 'Gene', '6390', (365, 369)) ('tumor', 'Disease', 'MESH:D009369', (155, 160)) ('metastases', 'Disease', 'MESH:D009362', (24, 34)) ('tumor', 'Phenotype', 'HP:0002664', (155, 160)) ('SDHB', 'Gene', (365, 369)) ('tumor', 'Disease', (155, 160)) ('germline mutation', 'Var', (370, 387)) ('metastatic', 'Disease', (3, 13)) ('patients', 'Species', '9606', (305, 313)) ('metastases', 'Disease', (24, 34)) ('patients', 'Species', '9606', (183, 191)) 26003 33364876 Apparently, germline mutation is less than 20% in patients with sporadic tumors and much higher in patients with family history. ('sporadic tumors', 'Disease', 'MESH:D009369', (64, 79)) ('patients', 'Species', '9606', (50, 58)) ('germline mutation', 'Var', (12, 29)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('sporadic tumors', 'Disease', (64, 79)) ('patients', 'Species', '9606', (99, 107)) ('tumors', 'Phenotype', 'HP:0002664', (73, 79)) ('higher', 'Reg', (89, 95)) 26004 33364876 PGLs associated with SDHB mutations have a high risk of metastasis. ('metastasis', 'CPA', (56, 66)) ('PGL', 'Phenotype', 'HP:0002668', (0, 3)) ('SDHB', 'Gene', '6390', (21, 25)) ('mutations', 'Var', (26, 35)) ('SDHB', 'Gene', (21, 25)) 26007 33364876 SDHx mutations are the most common and are associated with paraganglioma syndromes from 1 to 4 (SDHD, SDHAF2, SDHC and SDHB mutations, respectively). ('SDHAF2', 'Gene', '54949', (102, 108)) ('SDHB', 'Gene', '6390', (119, 123)) ('SDHC', 'Gene', (110, 114)) ('paraganglioma', 'Phenotype', 'HP:0002668', (59, 72)) ('mutations', 'Var', (5, 14)) ('SDHC', 'Gene', '6391', (110, 114)) ('SDHx', 'Gene', (0, 4)) ('SDHB', 'Gene', (119, 123)) ('paraganglioma', 'Disease', (59, 72)) ('associated', 'Reg', (43, 53)) ('paraganglioma', 'Disease', 'MESH:D010235', (59, 72)) ('SDHD', 'Gene', '6392', (96, 100)) ('SDHD', 'Gene', (96, 100)) ('SDHAF2', 'Gene', (102, 108)) 26008 33364876 While SDHB mutations cause more aggressive disease and metastasize more than SDHD mutations, SDHD mutations cause head and neck PGLs with higher rates and PCC with lower rates. ('aggressive disease', 'Disease', 'MESH:D001523', (32, 50)) ('PGL', 'Phenotype', 'HP:0002668', (128, 131)) ('mutations', 'Var', (11, 20)) ('SDHD', 'Gene', (93, 97)) ('metastasize', 'CPA', (55, 66)) ('PCC', 'Phenotype', 'HP:0002666', (155, 158)) ('aggressive disease', 'Disease', (32, 50)) ('SDHD', 'Gene', '6392', (77, 81)) ('SDHD', 'Gene', (77, 81)) ('cause', 'Reg', (21, 26)) ('mutations', 'Var', (98, 107)) ('SDHB', 'Gene', '6390', (6, 10)) ('cause', 'Reg', (108, 113)) ('SDHD', 'Gene', '6392', (93, 97)) ('PCC', 'Disease', (155, 158)) ('SDHB', 'Gene', (6, 10)) 26009 33364876 revealed that carotid body PGLs with SDHB mutation was associated with worse disease-free survival after resection despite early intervention, and a more aggressive surgical approach is required in these patients. ('patients', 'Species', '9606', (204, 212)) ('disease-free survival', 'CPA', (77, 98)) ('SDHB', 'Gene', '6390', (37, 41)) ('PGL', 'Phenotype', 'HP:0002668', (27, 30)) ('mutation', 'Var', (42, 50)) ('SDHB', 'Gene', (37, 41)) ('worse', 'NegReg', (71, 76)) 26010 33364876 However, in the carotid body PGLs without SDHB mutation, they reported that if the lesion is asymptomatic, its diameter is less than 2 cm and not biochemically hormone-active, the follow-up option can be considered. ('PGL', 'Phenotype', 'HP:0002668', (29, 32)) ('SDHB', 'Gene', '6390', (42, 46)) ('mutation', 'Var', (47, 55)) ('SDHB', 'Gene', (42, 46)) 26030 33364876 Biochemical and clinical responses can be obtained with advanced somatostatin analogs, such as 90 Y-DOTATATE or 177 Lu-DOTATATE in somatostatin receptor-positive metastases in advanced PPGLs. ('metastases', 'Disease', (162, 172)) ('Lu-DOTATATE', 'Chemical', '-', (116, 127)) ('Y-DOTATATE', 'Chemical', '-', (98, 108)) ('metastases', 'Disease', 'MESH:D009362', (162, 172)) ('somatostatin', 'MPA', (131, 143)) ('PPGLs', 'Chemical', '-', (185, 190)) ('177 Lu-DOTATATE', 'Var', (112, 127)) ('PGL', 'Phenotype', 'HP:0002668', (186, 189)) 26033 33364876 Information about signal paths and mutations in PPGL can guide targeted treatments. ('PGL', 'Phenotype', 'HP:0002668', (49, 52)) ('PPGL', 'Chemical', '-', (48, 52)) ('PPGL', 'Gene', (48, 52)) ('mutations', 'Var', (35, 44)) 26037 33364876 Lifelong follow-up is recommended for high-risk PCC patients (germline mutation, young age (<20 years), large tumor (>5-6 cm), SDHB carriers) and all PGL patients. ('PCC', 'Disease', (48, 51)) ('PGL', 'Phenotype', 'HP:0002668', (150, 153)) ('SDHB', 'Gene', '6390', (127, 131)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('tumor', 'Disease', (110, 115)) ('patients', 'Species', '9606', (154, 162)) ('PCC', 'Phenotype', 'HP:0002666', (48, 51)) ('SDHB', 'Gene', (127, 131)) ('germline mutation', 'Var', (62, 79)) ('patients', 'Species', '9606', (52, 60)) ('tumor', 'Disease', 'MESH:D009369', (110, 115)) 26042 33364876 Chromogranin A test should be performed annually in patients with negative metanephrine and 3-MT tests, and positive chromogranin A. ('Chromogranin A', 'Gene', (0, 14)) ('chromogranin A', 'Gene', (117, 131)) ('Chromogranin A', 'Gene', '1113', (0, 14)) ('chromogranin A', 'Gene', '1113', (117, 131)) ('positive', 'Var', (108, 116)) ('metanephrine', 'Chemical', 'MESH:D008676', (75, 87)) ('3-MT tests', 'MPA', (92, 102)) ('patients', 'Species', '9606', (52, 60)) ('metanephrine', 'MPA', (75, 87)) 26051 33364876 PPGL increases cardiovascular morbidity and mortality. ('cardiovascular morbidity', 'CPA', (15, 39)) ('PGL', 'Phenotype', 'HP:0002668', (1, 4)) ('mortality', 'Disease', 'MESH:D003643', (44, 53)) ('cardiovascular morbidity', 'Phenotype', 'HP:0001626', (15, 39)) ('increases', 'PosReg', (5, 14)) ('mortality', 'Disease', (44, 53)) ('PPGL', 'Var', (0, 4)) ('PPGL', 'Chemical', '-', (0, 4)) 26073 33193100 Such genetic alterations are mainly involved in the pathogenesis of pseudohypoxia, Wnt, and kinase signaling, and other intracellular signaling cascades. ('pseudohypoxia', 'Disease', (68, 81)) ('involved', 'Reg', (36, 44)) ('pseudohypoxia', 'Disease', 'None', (68, 81)) ('genetic alterations', 'Var', (5, 24)) 26074 33193100 In addition, recurrent somatic mutations are frequently detected and overlapped with the presence of genetic alterations associated with hereditary diseases. ('hereditary diseases', 'Disease', (137, 156)) ('hereditary diseases', 'Disease', 'MESH:D030342', (137, 156)) ('mutations', 'Var', (31, 40)) 26081 33193100 Among the genes above, the presence of SDHX mutations is reported to increase the risks of developing aggressive disease behavior by altering intracellular metabolism, especially the tricarboxylic acid (TCA) cycle. ('altering', 'Reg', (133, 141)) ('aggressive disease behavior', 'Disease', (102, 129)) ('SDHX', 'Gene', (39, 43)) ('aggressive disease behavior', 'Disease', 'MESH:D001523', (102, 129)) ('TCA', 'Chemical', 'MESH:D014233', (203, 206)) ('intracellular metabolism', 'MPA', (142, 166)) ('mutations', 'Var', (44, 53)) ('presence', 'Var', (27, 35)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (183, 201)) 26086 33193100 Pathogenic variants with genetic alterations in relevant genes are generally exclusive to each other, but it is also true that somatically mutated driver genes are involved in further development of PPGLs in a minor population with germline mutations, which is considered unique to this tumor. ('variants', 'Var', (11, 19)) ('tumor', 'Disease', 'MESH:D009369', (287, 292)) ('involved', 'Reg', (164, 172)) ('PPGLs', 'Chemical', '-', (199, 204)) ('tumor', 'Phenotype', 'HP:0002664', (287, 292)) ('tumor', 'Disease', (287, 292)) 26087 33193100 further demonstrated that 27% of PPGLs have germline mutations, 39% somatic mutations (with 5%-10% overlap with germline mutations), 7% gene fusions, and 89% copy number alterations. ('PPGLs', 'Chemical', '-', (33, 38)) ('copy number alterations', 'Var', (158, 181)) ('PPGLs', 'Gene', (33, 38)) ('somatic mutations', 'CPA', (68, 85)) ('germline mutations', 'Var', (44, 62)) ('gene fusions', 'Var', (136, 148)) 26089 33193100 The most prevalent subtype is the "pseudohypoxia type", with genetic alterations in SDHX families, FH, VHL, and EPAS1. ('pseudohypoxia', 'Disease', (35, 48)) ('EPAS1', 'Gene', (112, 117)) ('VHL', 'Gene', '7428', (103, 106)) ('pseudohypoxia', 'Disease', 'None', (35, 48)) ('SDHX families', 'Gene', (84, 97)) ('prevalent', 'Reg', (9, 18)) ('genetic alterations', 'Var', (61, 80)) ('FH', 'Disease', 'MESH:D006938', (99, 101)) ('EPAS1', 'Gene', '2034', (112, 117)) ('VHL', 'Gene', (103, 106)) 26090 33193100 The second is the "Wnt-signal type" associated with somatic alterations in genes involved in Wnt-signaling pathways, including CSDE1 mutation and MAML3 gene transfusion. ('CSDE1', 'Gene', (127, 132)) ('mutation', 'Var', (133, 141)) ('MAML3', 'Gene', '55534', (146, 151)) ('MAML3', 'Gene', (146, 151)) ('alterations', 'Var', (60, 71)) 26095 33193100 However, genetic alterations in genes encoding catalyzing enzymes involved in the TCA cycle, such as succinate dehydrogenase, are known to result in loss of their physiological functions. ('loss', 'NegReg', (149, 153)) ('genetic alterations', 'Var', (9, 28)) ('TCA', 'Chemical', 'MESH:D014233', (82, 85)) ('physiological functions', 'MPA', (163, 186)) 26096 33193100 These altered genes subsequently promote anaerobic metabolism by tumor cells, shifting ATP resources from the TCA cycle into the system of metabolic glycolysis. ('promote', 'PosReg', (33, 40)) ('tumor', 'Disease', (65, 70)) ('anaerobic metabolism', 'MPA', (41, 61)) ('TCA', 'Chemical', 'MESH:D014233', (110, 113)) ('genes', 'Var', (14, 19)) ('ATP', 'Chemical', 'MESH:D000255', (87, 90)) ('tumor', 'Disease', 'MESH:D009369', (65, 70)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) ('shifting', 'Reg', (78, 86)) 26098 33193100 These intracellular changes also enable tumor cells to efficiently synthesize ATP, although the amounts of ATP synthesized from glycolysis per reaction does not reach the same levels as those from the TCA cycle. ('ATP', 'Chemical', 'MESH:D000255', (78, 81)) ('tumor', 'Disease', 'MESH:D009369', (40, 45)) ('synthesize ATP', 'MPA', (67, 81)) ('ATP', 'Chemical', 'MESH:D000255', (107, 110)) ('TCA', 'Chemical', 'MESH:D014233', (201, 204)) ('changes', 'Var', (20, 27)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('tumor', 'Disease', (40, 45)) 26103 33193100 The activation of Wnt-related signals is not necessarily specific for PPGLs, but the presence of this particular type of genetic abnormality has been reported to result in relatively frequent distant metastasis or recurrence, especially in cases involving MAML3 gene fusions. ('MAML3', 'Gene', '55534', (256, 261)) ('recurrence', 'CPA', (214, 224)) ('MAML3', 'Gene', (256, 261)) ('genetic abnormality', 'Disease', 'MESH:D030342', (121, 140)) ('PPGLs', 'Chemical', '-', (70, 75)) ('genetic abnormality', 'Disease', (121, 140)) ('distant metastasis', 'CPA', (192, 210)) ('presence', 'Var', (85, 93)) ('result in', 'Reg', (162, 171)) 26104 33193100 Somatic mutations of the CSDE1 gene and transfusion of MAML3 are both classified as exhibiting this phenotype. ('transfusion', 'Var', (40, 51)) ('CSDE1', 'Gene', (25, 30)) ('MAML3', 'Gene', '55534', (55, 60)) ('MAML3', 'Gene', (55, 60)) 26105 33193100 CSDE1 frameshift and splice-site mutations have been reported in a minor population of PPGLs with previously known germline mutations, including VHL, NF1, and RET. ('splice-site mutations', 'Var', (21, 42)) ('NF1', 'Gene', (150, 153)) ('RET', 'Gene', '5979', (159, 162)) ('NF1', 'Gene', '4763', (150, 153)) ('RET', 'Gene', (159, 162)) ('PPGLs', 'Chemical', '-', (87, 92)) ('VHL', 'Gene', (145, 148)) ('frameshift', 'Var', (6, 16)) ('CSDE1', 'Gene', (0, 5)) ('VHL', 'Gene', '7428', (145, 148)) 26106 33193100 The functional roles of mutated variants of CSDE1 were also previously validated by microarray analysis using mouse embryonic stem cells. ('mouse', 'Species', '10090', (110, 115)) ('variants', 'Var', (32, 40)) ('mutated variants', 'Var', (24, 40)) ('CSDE1', 'Gene', (44, 49)) 26108 33193100 Comprehensive genetic analysis revealed that the UBTF-MAML3 fusion gene activates Wnt-Shh signaling, but only a small number of studies have investigated the clinical significance of this chimeric fusion gene. ('activates', 'PosReg', (72, 81)) ('fusion', 'Var', (60, 66)) ('UBTF', 'Gene', '7343', (49, 53)) ('MAML3', 'Gene', (54, 59)) ('Shh', 'Gene', '6469', (86, 89)) ('UBTF', 'Gene', (49, 53)) ('Shh', 'Gene', (86, 89)) ('MAML3', 'Gene', '55534', (54, 59)) 26110 33193100 Familial PHEOs with TMEM127 or MAX mutations are also categorized into this subtype. ('MAX', 'Gene', (31, 34)) ('Familial PHEOs', 'Disease', (0, 14)) ('TMEM127', 'Gene', (20, 27)) ('TMEM127', 'Gene', '55654', (20, 27)) ('mutations', 'Var', (35, 44)) 26111 33193100 Among them, the gain-of-function caused by RET gene mutation has been studied in the most detail. ('RET', 'Gene', '5979', (43, 46)) ('RET', 'Gene', (43, 46)) ('mutation', 'Var', (52, 60)) ('gain-of-function', 'PosReg', (16, 32)) 26113 33193100 RET mutations detected in MEN2A are reported to cause homodimerization, which subsequently activates PI3K-AKT, RAS, p38-MAPK, and JUN N-terminal kinase pathways in a ligand-independent manner, promoting abnormal cell proliferation. ('AKT', 'Gene', (106, 109)) ('RAS', 'Pathway', (111, 114)) ('MEN2A', 'Gene', (26, 31)) ('RET', 'Gene', '5979', (0, 3)) ('cell proliferation', 'CPA', (212, 230)) ('MEN2A', 'Gene', '5979', (26, 31)) ('RET', 'Gene', (0, 3)) ('cause', 'Reg', (48, 53)) ('abnormal cell proliferation', 'Phenotype', 'HP:0031377', (203, 230)) ('activates', 'PosReg', (91, 100)) ('JUN N-terminal kinase', 'Gene', '5599', (130, 151)) ('promoting', 'PosReg', (193, 202)) ('AKT', 'Gene', '207', (106, 109)) ('JUN N-terminal kinase', 'Gene', (130, 151)) ('mutations', 'Var', (4, 13)) ('p38-MAPK', 'Pathway', (116, 124)) ('homodimerization', 'MPA', (54, 70)) 26117 33193100 Among these somatic gene abnormalities, aberrant telomere maintenance mechanism (TMM), which is caused by TERT (telomerase reverse transcriptase) structural rearrangement, genetic abnormalities, and ATRX mutations, has been reported to be associated with poor clinical outcomes in patients. ('associated', 'Reg', (239, 249)) ('telomerase reverse transcriptase', 'Gene', '7015', (112, 144)) ('TERT', 'Gene', (106, 110)) ('mutations', 'Var', (204, 213)) ('ATRX', 'Gene', (199, 203)) ('TERT', 'Gene', '7015', (106, 110)) ('patients', 'Species', '9606', (281, 289)) ('genetic abnormalities', 'Disease', 'MESH:D030342', (172, 193)) ('genetic abnormalities', 'Disease', (172, 193)) ('ATRX', 'Gene', '546', (199, 203)) ('telomerase reverse transcriptase', 'Gene', (112, 144)) ('telomere maintenance mechanism', 'Disease', (49, 79)) ('aberrant', 'Var', (40, 48)) 26118 33193100 Structural rearrangement of TERT has also been reported to result in its over-expression as a result of the placement of enhancers proximal to the TERT promoter. ('TERT', 'Gene', (147, 151)) ('rearrangement', 'Var', (11, 24)) ('TERT', 'Gene', (28, 32)) ('TERT', 'Gene', '7015', (147, 151)) ('Structural rearrangement', 'Var', (0, 24)) ('over-expression', 'MPA', (73, 88)) ('enhancers', 'PosReg', (121, 130)) ('TERT', 'Gene', '7015', (28, 32)) 26119 33193100 The presence of somatic mutations detected in the TERT promoter is not necessarily concordant with TERT overexpression, but a specific hot-spot, C228T, is reported to be associated with adverse clinical outcomes in patients. ('patients', 'Species', '9606', (215, 223)) ('TERT', 'Gene', '7015', (50, 54)) ('TERT', 'Gene', (99, 103)) ('C228T', 'Var', (145, 150)) ('TERT', 'Gene', '7015', (99, 103)) ('associated', 'Reg', (170, 180)) ('TERT', 'Gene', (50, 54)) ('C228T', 'Mutation', 'rs1450906770', (145, 150)) 26135 33193100 The sensitivity of GAPP and M-GAPP is relatively high, while their specificity only reaches 50%-60% in terms of predicting distant metastasis in PPGL patients. ('M-GAPP', 'Var', (28, 34)) ('patients', 'Species', '9606', (150, 158)) ('distant metastasis', 'CPA', (123, 141)) ('GAPP', 'Var', (19, 23)) ('PPGL', 'Disease', (145, 149)) 26136 33193100 The area under the curve (AUC) of these scoring systems resulted in 0.822 for M-GAPP, 0.728 for GAPP, and 0.753 for PASS, and there were no differences among the predictive values for patients. ('M-GAPP', 'Disease', (78, 84)) ('GAPP', 'Var', (96, 100)) ('PASS', 'Disease', (116, 120)) ('patients', 'Species', '9606', (184, 192)) 26145 33193100 Finally, COPPs were defined according to the following criteria: three clinicopathological parameters (tumor size > 7 cm, necrosis, and vascular invasion), loss of S-100 immunoreactivity (loss of intervening sustentacular cells), and loss of SDHB immunoreactivity (suggesting SDHB mutation) ( Figure 1E ). ('SDHB', 'Gene', '6390', (276, 280)) ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('SDHB', 'Gene', '6390', (242, 246)) ('necrosis', 'Disease', 'MESH:D009336', (122, 130)) ('SDHB', 'Gene', (276, 280)) ('tumor', 'Disease', (103, 108)) ('mutation', 'Var', (281, 289)) ('loss of SDHB immunoreactivity', 'Disease', (234, 263)) ('loss', 'NegReg', (156, 160)) ('SDHB', 'Gene', (242, 246)) ('S-100 immunoreactivity', 'Protein', (164, 186)) ('loss of SDHB immunoreactivity', 'Disease', 'MESH:C537505', (234, 263)) ('tumor', 'Disease', 'MESH:D009369', (103, 108)) ('necrosis', 'Disease', (122, 130)) 26149 33193100 SDHB IHC has been employed to detect SDHB gene mutations with relatively high concordance (sensitivity: 100% [95% CI: 87%-100%], specificity: 84% [95% CI: 60%-97%]) as demonstrated by the total absence of immunoreactivity, with positive immunoreactivity in endothelial cells as a positive IHC control. ('SDHB', 'Gene', '6390', (37, 41)) ('mutations', 'Var', (47, 56)) ('SDHB', 'Gene', (37, 41)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) 26162 33193100 Of particular interest, pseudohypoxic PPGLs are generally negative for PNMT, and have silent clinical and hormonal phenotypes, which could delay therapeutic intervention in such patients. ('patients', 'Species', '9606', (178, 186)) ('PNMT', 'Gene', (71, 75)) ('negative', 'NegReg', (58, 66)) ('PNMT', 'Gene', '5409', (71, 75)) ('PPGLs', 'Chemical', '-', (38, 43)) ('pseudohypoxic', 'Var', (24, 37)) 26181 33193100 Among them, SDHX mutations are the most frequently detected, resulting in pseudohypoxic status of tumor cells and which correlate with patient clinical outcomes, especially in detecting metastatic potential. ('resulting in', 'Reg', (61, 73)) ('patient', 'Species', '9606', (135, 142)) ('pseudohypoxic status of', 'MPA', (74, 97)) ('SDHX', 'Gene', (12, 16)) ('tumor', 'Disease', 'MESH:D009369', (98, 103)) ('metastatic potential', 'CPA', (186, 206)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('tumor', 'Disease', (98, 103)) ('mutations', 'Var', (17, 26)) 26251 32106822 Case report: a synonymous VHL mutation (c.414A > G, p.Pro138Pro) causes pathogenic familial hemangioblastoma through dysregulated splicing von Hippel-Lindau (VHL) disease is a familial neoplasia syndrome that results from the germline mutation of VHL. ('neoplasia', 'Phenotype', 'HP:0002664', (185, 194)) ('familial neoplasia syndrome', 'Disease', 'MESH:D009369', (176, 203)) ('VHL', 'Gene', '7428', (158, 161)) ('c.414A > G', 'Var', (40, 50)) ('VHL', 'Gene', (26, 29)) ('c.414A > G', 'Mutation', 'rs869025648', (40, 50)) ('p.Pro138Pro', 'Mutation', 'rs869025648', (52, 63)) ('familial neoplasia syndrome', 'Disease', (176, 203)) ('VHL', 'Gene', '7428', (26, 29)) ('VHL', 'Gene', (247, 250)) ('VHL', 'Gene', (158, 161)) ('causes', 'Reg', (65, 71)) ('von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (139, 170)) ('familial hemangioblastoma', 'Disease', 'MESH:D018325', (83, 108)) ('VHL', 'Gene', '7428', (247, 250)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (92, 108)) ('familial hemangioblastoma', 'Disease', (83, 108)) 26252 32106822 Pathogenic VHL mutations include deletion, frameshift, nonsense and missense mutations. ('Pathogenic', 'Reg', (0, 10)) ('deletion', 'Var', (33, 41)) ('frameshift', 'Var', (43, 53)) ('missense mutations', 'Var', (68, 86)) ('VHL', 'Gene', (11, 14)) ('VHL', 'Gene', '7428', (11, 14)) ('nonsense', 'Var', (55, 63)) 26253 32106822 Synonymous mutations are expected to be phenotypically silent and their role in VHL disease remains poorly understood. ('Synonymous mutations', 'Var', (0, 20)) ('VHL disease', 'Disease', 'MESH:D006623', (80, 91)) ('VHL disease', 'Disease', (80, 91)) 26254 32106822 We report a Caucasian male with a family history of pheochromocytoma and the synonymous VHL mutation c.414A > G (p.Pro138Pro). ('c.414A > G', 'Mutation', 'rs869025648', (101, 111)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (52, 68)) ('p.Pro138Pro', 'Mutation', 'rs869025648', (113, 124)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (52, 68)) ('VHL', 'Gene', (88, 91)) ('VHL', 'Gene', '7428', (88, 91)) ('pheochromocytoma', 'Disease', (52, 68)) ('c.414A > G', 'Var', (101, 111)) 26258 32106822 Two of three of the proband's children inherited the mutation and both presented with retinal hemangioblastomas without pheochromocytoma at age 7: one twin needed four laser treatments. ('mutation', 'Var', (53, 61)) ('children', 'Species', '9606', (30, 38)) ('retinal hemangioblastoma', 'Phenotype', 'HP:0009711', (86, 110)) ('retinal hemangioblastomas', 'Disease', 'MESH:D018325', (86, 111)) ('inherited', 'Reg', (39, 48)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (94, 110)) ('pheochromocytoma', 'Disease', (120, 136)) ('retinal hemangioblastomas', 'Phenotype', 'HP:0009711', (86, 111)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (120, 136)) ('presented with', 'Reg', (71, 85)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (120, 136)) ('retinal hemangioblastomas', 'Disease', (86, 111)) 26260 32106822 Mutant fibroblasts downregulated full-length VHL mRNA and protein, and upregulated the short VHL mRNA isoform (a result of exon 2 skipping in splicing) at the mRNA level but not at the protein level. ('VHL', 'Gene', '7428', (45, 48)) ('full-length', 'MPA', (33, 44)) ('VHL', 'Gene', '7428', (93, 96)) ('Mutant', 'Var', (0, 6)) ('VHL', 'Gene', (45, 48)) ('VHL', 'Gene', (93, 96)) ('downregulated', 'NegReg', (19, 32)) ('upregulated', 'PosReg', (71, 82)) 26261 32106822 Our study shows that the synonymous VHL mutation c.414A > G can within 7 years induce pediatric retinal hemangioblastoma in absence of pheochromocytoma. ('hemangioblastoma', 'Phenotype', 'HP:0010797', (104, 120)) ('VHL', 'Gene', (36, 39)) ('pheochromocytoma', 'Disease', (135, 151)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (135, 151)) ('VHL', 'Gene', '7428', (36, 39)) ('retinal hemangioblastoma', 'Phenotype', 'HP:0009711', (96, 120)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (135, 151)) ('induce', 'PosReg', (79, 85)) ('pediatric retinal hemangioblastoma', 'Disease', 'MESH:D018325', (86, 120)) ('c.414A > G', 'Mutation', 'rs869025648', (49, 59)) ('mutation c.414A > G', 'Var', (40, 59)) ('pediatric retinal hemangioblastoma', 'Disease', (86, 120)) 26262 32106822 This highlights the need to include splicing-altering synonymous mutations into the screening for VHL disease. ('VHL disease', 'Disease', 'MESH:D006623', (98, 109)) ('VHL disease', 'Disease', (98, 109)) ('splicing-altering synonymous mutations', 'Var', (36, 74)) 26263 32106822 This is also the first report on detecting and validating a synonymous VHL mutation using patient-derived fibroblasts. ('VHL', 'Gene', (71, 74)) ('patient', 'Species', '9606', (90, 97)) ('mutation', 'Var', (75, 83)) ('VHL', 'Gene', '7428', (71, 74)) 26264 32106822 The mutation c.414A > G translates to p.Pro138Pro, yet it is not functionally silent, because it causes aberrant splicing by skipping exon 2. ('skipping', 'NegReg', (125, 133)) ('splicing', 'MPA', (113, 121)) ('c.414A > G', 'Var', (13, 23)) ('c.414A > G', 'Mutation', 'rs869025648', (13, 23)) ('causes', 'Reg', (97, 103)) ('p.Pro138Pro', 'Mutation', 'rs869025648', (38, 49)) 26267 32106822 Germline mutations in the VHL gene lead to the development of benign or malignant tumors in many organ systems. ('Germline mutations', 'Var', (0, 18)) ('malignant tumors', 'Disease', 'MESH:D009369', (72, 88)) ('tumors', 'Phenotype', 'HP:0002664', (82, 88)) ('VHL', 'Gene', (26, 29)) ('development', 'CPA', (47, 58)) ('VHL', 'Gene', '7428', (26, 29)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('lead to', 'Reg', (35, 42)) ('malignant tumors', 'Disease', (72, 88)) 26271 32106822 VHL disease has a characteristic genotype-phenotype correlation: Type 1 has a very low risk of PHEO and is most commonly caused by VHL exon deletion, truncation, frameshift and nonsense mutations; Type 2 has a higher risk of PHEO and is characterized by VHL missense mutations. ('VHL disease', 'Disease', (0, 11)) ('caused', 'Reg', (121, 127)) ('frameshift', 'Var', (162, 172)) ('truncation', 'Var', (150, 160)) ('VHL', 'Gene', '7428', (0, 3)) ('VHL', 'Gene', '7428', (254, 257)) ('PHEO', 'Disease', (225, 229)) ('PHEO', 'Phenotype', 'HP:0002666', (225, 229)) ('nonsense mutations', 'Var', (177, 195)) ('VHL', 'Gene', (131, 134)) ('PHEO', 'Disease', 'MESH:D010673', (95, 99)) ('VHL', 'Gene', '7428', (131, 134)) ('PHEO', 'Disease', (95, 99)) ('VHL disease', 'Disease', 'MESH:D006623', (0, 11)) ('VHL', 'Gene', (0, 3)) ('exon deletion', 'Var', (135, 148)) ('VHL', 'Gene', (254, 257)) ('PHEO', 'Disease', 'MESH:D010673', (225, 229)) ('PHEO', 'Phenotype', 'HP:0002666', (95, 99)) 26278 32106822 However, increasing evidence indicates that synonymous mutations may not be merely passenger events; instead, they can actively contribute to human cancers, often through alternation of pre-mRNA splicing. ('cancers', 'Disease', 'MESH:D009369', (148, 155)) ('cancers', 'Phenotype', 'HP:0002664', (148, 155)) ('contribute', 'Reg', (128, 138)) ('cancers', 'Disease', (148, 155)) ('alternation', 'Reg', (171, 182)) ('human', 'Species', '9606', (142, 147)) ('pre-mRNA splicing', 'MPA', (186, 203)) ('synonymous mutations', 'Var', (44, 64)) 26279 32106822 For example, recurrent synonymous mutations in the tumor suppressor gene TP53 were found to impair the wild type splice sites and activate cryptic splice sites. ('synonymous mutations', 'Var', (23, 43)) ('activate', 'PosReg', (130, 138)) ('wild type splice sites', 'MPA', (103, 125)) ('TP53', 'Gene', '7157', (73, 77)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('TP53', 'Gene', (73, 77)) ('tumor', 'Disease', (51, 56)) ('cryptic splice sites', 'MPA', (139, 159)) ('tumor', 'Disease', 'MESH:D009369', (51, 56)) ('impair', 'NegReg', (92, 98)) 26281 32106822 E1E2E3 encodes a longer protein of 213 amino acids (pVHL213) and a shorter protein of 160 amino acids (pVHL160) due to translation initiation from an internal start site. ('pVHL', 'Gene', '7428', (52, 56)) ('pVHL', 'Gene', '7428', (103, 107)) ('pVHL', 'Gene', (52, 56)) ('pVHL', 'Gene', (103, 107)) ('E1E2E3', 'Var', (0, 6)) 26283 32106822 E1E3 encodes a protein of 172 amino acids (pVHL172) with generally low expression abundance and a possible lack of the tumor suppressor function due to the disruption of the HIF-binding domain. ('disruption', 'Var', (156, 166)) ('tumor', 'Disease', (119, 124)) ('HIF-binding', 'Protein', (174, 185)) ('lack', 'NegReg', (107, 111)) ('tumor', 'Disease', 'MESH:D009369', (119, 124)) ('expression abundance', 'MPA', (71, 91)) ('pVHL', 'Gene', '7428', (43, 47)) ('E1E3', 'Var', (0, 4)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('pVHL', 'Gene', (43, 47)) ('low', 'NegReg', (67, 70)) 26284 32106822 Recent studies suggest that synonymous mutations of VHL can also lead to dysregulated splicing. ('VHL', 'Gene', '7428', (52, 55)) ('dysregulated splicing', 'MPA', (73, 94)) ('lead to', 'Reg', (65, 72)) ('synonymous mutations', 'Var', (28, 48)) ('VHL', 'Gene', (52, 55)) 26286 32106822 Here, we provide an independent line of evidence to demonstrate that a synonymous mutation in exon 2 of VHL that shifts the pattern of splicing and expression of VHL at the cellular level is pathogenic to cause HGB both with and without PHEO. ('VHL', 'Gene', (162, 165)) ('VHL', 'Gene', '7428', (104, 107)) ('VHL', 'Gene', '7428', (162, 165)) ('HGB', 'Disease', (211, 214)) ('PHEO', 'Phenotype', 'HP:0002666', (237, 241)) ('pathogenic', 'Reg', (191, 201)) ('mutation in', 'Var', (82, 93)) ('HGB', 'Phenotype', 'HP:0010797', (211, 214)) ('PHEO', 'Disease', 'MESH:D010673', (237, 241)) ('VHL', 'Gene', (104, 107)) ('PHEO', 'Disease', (237, 241)) ('cause', 'Reg', (205, 210)) ('HGB', 'Disease', 'MESH:D018325', (211, 214)) 26290 32106822 The proband's test results revealed a heterozygous mutation from A to G at the nucleotide position 414 in the coding sequence of VHL transcript NM_000551, which surprisingly is a synonymous mutation that does not change the coded amino acid (p.Pro138Pro) of the protein pVHL. ('VHL', 'Gene', (129, 132)) ('pVHL', 'Gene', (270, 274)) ('pVHL', 'Gene', '7428', (270, 274)) ('VHL', 'Gene', '7428', (129, 132)) ('VHL', 'Gene', (271, 274)) ('mutation', 'Var', (51, 59)) ('p.Pro138Pro', 'Mutation', 'rs869025648', (242, 253)) ('VHL', 'Gene', '7428', (271, 274)) 26305 32106822 Children underwent genetic testing and confirmed that the son had wild type VHL and the twins both inherited the c.414A > G mutation. ('VHL', 'Gene', (76, 79)) ('Children', 'Species', '9606', (0, 8)) ('VHL', 'Gene', '7428', (76, 79)) ('c.414A > G', 'Var', (113, 123)) ('c.414A > G', 'Mutation', 'rs869025648', (113, 123)) 26323 32106822 To examine whether this mutation affects splicing and gene expression, we first performed Reverse Transcriptase PCR (RT-PCR) on the 5 fibroblast cell lines using primers that locate in Exon 1 (F1: 5'-GCGTCGTGCTGCCCGTATG-3') and Exon 3 (R1: 5'-TTCTGCACATTTGGGTGGTCTT-3') of VHL transcript (shown schematically in Fig. ('affects', 'Reg', (33, 40)) ('VHL', 'Gene', '7428', (273, 276)) ('VHL', 'Gene', (273, 276)) ('mutation', 'Var', (24, 32)) 26324 32106822 We saw a significant change in the pattern of expressed VHL transcripts, with a higher expression level of the E1E3 mRNA at the expense of lower level of E1E2E3 mRNA for Proband, Twin 1 and Twin 2 fibroblasts relative to the two VHLWT fibroblasts (Fig. ('VHL', 'Gene', (56, 59)) ('expression level', 'MPA', (87, 103)) ('VHL', 'Gene', '7428', (56, 59)) ('VHL', 'Gene', (229, 232)) ('VHL', 'Gene', '7428', (229, 232)) ('higher', 'PosReg', (80, 86)) ('E1E3', 'Var', (111, 115)) 26326 32106822 Consistent with downregulated E1E2E3 transcript, pVHL213 was downregulated in mutant fibroblasts compared with WT fibroblasts (Fig. ('transcript', 'MPA', (37, 47)) ('pVHL', 'Gene', '7428', (49, 53)) ('downregulated', 'NegReg', (61, 74)) ('E1E2E3', 'Gene', (30, 36)) ('pVHL', 'Gene', (49, 53)) ('mutant', 'Var', (78, 84)) ('downregulated', 'NegReg', (16, 29)) 26327 32106822 Contrary to our expectation, pVHL172 was also downregulated in mutant fibroblasts (Fig. ('pVHL', 'Gene', (29, 33)) ('downregulated', 'NegReg', (46, 59)) ('mutant', 'Var', (63, 69)) ('pVHL', 'Gene', '7428', (29, 33)) 26328 32106822 Our study shows that the synonymous VHL mutation c.414A > G can induce pediatric retinal HGB in the absence of PHEO. ('induce', 'Reg', (64, 70)) ('VHL', 'Gene', (36, 39)) ('PHEO', 'Phenotype', 'HP:0002666', (111, 115)) ('VHL', 'Gene', '7428', (36, 39)) ('pediatric retinal HGB', 'Disease', 'MESH:D018325', (71, 92)) ('HGB', 'Phenotype', 'HP:0010797', (89, 92)) ('PHEO', 'Disease', 'MESH:D010673', (111, 115)) ('c.414A > G', 'Mutation', 'rs869025648', (49, 59)) ('pediatric retinal HGB', 'Disease', (71, 92)) ('PHEO', 'Disease', (111, 115)) ('mutation c.414A > G', 'Var', (40, 59)) 26329 32106822 In the adult proband, the mutation caused the development of HGB with PHEO. ('HGB', 'Phenotype', 'HP:0010797', (61, 64)) ('HGB', 'Disease', 'MESH:D018325', (61, 64)) ('mutation', 'Var', (26, 34)) ('PHEO', 'Phenotype', 'HP:0002666', (70, 74)) ('caused', 'Reg', (35, 41)) ('HGB', 'Disease', (61, 64)) ('PHEO', 'Disease', 'MESH:D010673', (70, 74)) ('PHEO', 'Disease', (70, 74)) 26332 32106822 Although this variant was shown to be associated with PHEO, the clinical information on its role in HGB was limited. ('associated', 'Reg', (38, 48)) ('PHEO', 'Disease', (54, 58)) ('HGB', 'Phenotype', 'HP:0010797', (100, 103)) ('HGB', 'Disease', 'MESH:D018325', (100, 103)) ('PHEO', 'Phenotype', 'HP:0002666', (54, 58)) ('HGB', 'Disease', (100, 103)) ('variant', 'Var', (14, 21)) ('PHEO', 'Disease', 'MESH:D010673', (54, 58)) 26334 32106822 In this report, the natural history indicates that this variant can be causal for assertive development of HGB in brain and retina needing multiple interventions, strongly recommending that affected asymptomatic patients undergo regular brain, spine and abdominal MRI screenings and ophthalmologic exams. ('variant', 'Var', (56, 63)) ('HGB', 'Disease', (107, 110)) ('HGB', 'Phenotype', 'HP:0010797', (107, 110)) ('patients', 'Species', '9606', (212, 220)) ('HGB', 'Disease', 'MESH:D018325', (107, 110)) 26335 32106822 This is the first report on detecting and validating a synonymous VHL mutation using patient-derived fibroblasts. ('mutation', 'Var', (70, 78)) ('patient', 'Species', '9606', (85, 92)) ('VHL', 'Gene', '7428', (66, 69)) ('VHL', 'Gene', (66, 69)) 26336 32106822 The mutation c.414A > G translates to p.Pro138Pro, yet it is not functionally silent, because the mutation causes aberrant splicing by skipping exon 2. ('skipping', 'NegReg', (135, 143)) ('c.414A > G', 'Var', (13, 23)) ('c.414A > G', 'Mutation', 'rs869025648', (13, 23)) ('causes', 'Reg', (107, 113)) ('p.Pro138Pro', 'Mutation', 'rs869025648', (38, 49)) 26340 32106822 Using the fibroblasts derived from three patients and two healthy individuals, we confirmed that the c.414A > G mutation led to VHL exon 2 skipping and generated less E1E2E3 but more E1E3, consistent with previous reports. ('c.414A > G', 'Mutation', 'rs869025648', (101, 111)) ('VHL', 'Gene', '7428', (128, 131)) ('skipping', 'NegReg', (139, 147)) ('E1E2E3', 'MPA', (167, 173)) ('patients', 'Species', '9606', (41, 49)) ('E1E3', 'MPA', (183, 187)) ('VHL', 'Gene', (128, 131)) ('c.414A > G', 'Var', (101, 111)) 26341 32106822 Mechanistically, c.414A > G mutation may dysregulate the exonic splicing enhancer in exon 2 and cause exon 2 skipping. ('exonic splicing enhancer in', 'MPA', (57, 84)) ('dysregulate', 'Reg', (41, 52)) ('c.414A > G', 'Var', (17, 27)) ('exon 2 skipping', 'MPA', (102, 117)) ('cause', 'Reg', (96, 101)) ('c.414A > G', 'Mutation', 'rs869025648', (17, 27)) 26342 32106822 To our surprise, we observed lower protein levels for both pVHL213 (encoded by E1E2E3) and pVHL172 (encoded by E1E3) in mutant fibroblasts compared with wild type fibroblasts. ('pVHL', 'Gene', '7428', (59, 63)) ('pVHL', 'Gene', (59, 63)) ('mutant', 'Var', (120, 126)) ('pVHL', 'Gene', '7428', (91, 95)) ('lower', 'NegReg', (29, 34)) ('pVHL', 'Gene', (91, 95)) ('protein levels', 'MPA', (35, 49)) 26343 32106822 This result strengthens a similar finding using lymphoblastoid cell lines carrying the c.414A > G mutation and suggest that there may be unidentified mechanisms regulating the translation or protein stability of pVHL172 so that this isoform level remains in proportionally lower abundance relative to the combined pVHL213 and pVHL160 level. ('protein', 'MPA', (191, 198)) ('pVHL', 'Gene', '7428', (326, 330)) ('abundance', 'MPA', (279, 288)) ('pVHL', 'Gene', (212, 216)) ('pVHL', 'Gene', '7428', (314, 318)) ('pVHL', 'Gene', (314, 318)) ('c.414A > G', 'Var', (87, 97)) ('pVHL', 'Gene', '7428', (212, 216)) ('c.414A > G', 'Mutation', 'rs869025648', (87, 97)) ('lower', 'NegReg', (273, 278)) ('pVHL', 'Gene', (326, 330)) 26347 32106822 The findings from this study and others, strongly advocate changing the status of VHL c.414A > G variant from "Uncertain significance" to "Pathogenic" for VHL disease in human variant databases (e.g. ('VHL', 'Gene', '7428', (155, 158)) ('VHL disease', 'Disease', (155, 166)) ('c.414A > G', 'Var', (86, 96)) ('VHL', 'Gene', (82, 85)) ('VHL disease', 'Disease', 'MESH:D006623', (155, 166)) ('human variant', 'Species', '9606', (170, 183)) ('VHL', 'Gene', '7428', (82, 85)) ('c.414A > G', 'Mutation', 'rs869025648', (86, 96)) ('VHL', 'Gene', (155, 158)) 26348 32106822 An unresolved issue is the mechanism how the exon 2 skipping mechanism causes the Type 2A disease phenotype which typically involves missense mutations. ('missense mutations', 'Var', (133, 151)) ('Type 2A disease', 'Disease', 'MESH:C536464', (82, 97)) ('Type 2A disease', 'Disease', (82, 97)) ('causes', 'Reg', (71, 77)) ('exon 2 skipping mechanism', 'Var', (45, 70)) 26349 32106822 Clinically, the PHEO tumors in patients carrying c.414A > G mutation lost the other WT allele, demonstrating LOH as described in classic VHL disease. ('PHEO', 'Disease', 'MESH:D010673', (16, 20)) ('VHL disease', 'Disease', 'MESH:D006623', (137, 148)) ('other WT allele', 'MPA', (78, 93)) ('tumors', 'Disease', (21, 27)) ('PHEO', 'Disease', (16, 20)) ('tumors', 'Disease', 'MESH:D009369', (21, 27)) ('tumors', 'Phenotype', 'HP:0002664', (21, 27)) ('PHEO', 'Phenotype', 'HP:0002666', (16, 20)) ('c.414A > G', 'Var', (49, 59)) ('patients', 'Species', '9606', (31, 39)) ('c.414A > G', 'Mutation', 'rs869025648', (49, 59)) ('VHL disease', 'Disease', (137, 148)) ('tumor', 'Phenotype', 'HP:0002664', (21, 26)) 26350 32106822 Therefore, it is conceivable that this hypomorphic mutation in the backdrop of LOH creates a residual amount of pVHL activity that makes cells in the adrenal glands and CNS, but not kidney, susceptible to tumorigenesis. ('pVHL', 'Gene', (112, 116)) ('activity', 'MPA', (117, 125)) ('tumor', 'Disease', 'MESH:D009369', (205, 210)) ('makes', 'Reg', (131, 136)) ('tumor', 'Phenotype', 'HP:0002664', (205, 210)) ('tumor', 'Disease', (205, 210)) ('mutation', 'Var', (51, 59)) ('pVHL', 'Gene', '7428', (112, 116)) 26374 30073909 The advent of these techniques has facilitated the identification of causative genes in rare diseases, and of gene variants that confer a relatively low disease risk. ('low disease', 'Disease', (149, 160)) ('rare diseases', 'Disease', (88, 101)) ('variants', 'Var', (115, 123)) ('low disease', 'Disease', 'MESH:D009800', (149, 160)) 26375 30073909 For gene variant carriers, the following notation is used: the age at diagnosis of the disease is denoted by T with cumulative distribution F and density f, and the age at the end of the study (collection of the data), or the age at death (whichever occurs first) by C, with distribution G and density g. It is assumed that T and C are independent. ('death', 'Disease', 'MESH:D003643', (233, 238)) ('variant', 'Var', (9, 16)) ('death', 'Disease', (233, 238)) 26393 30073909 The development of the method described in this paper was inspired by a study that was aimed at estimating the risk of developing a paraganglioma or pheochromocytoma (rare, usually benign neuroendocrine neoplasms) in carriers of germline SDHB gene variant. ('SDHB', 'Gene', '6390', (238, 242)) ('variant', 'Var', (248, 255)) ('paraganglioma', 'Phenotype', 'HP:0002668', (132, 145)) ('paraganglioma or pheochromocytoma', 'Disease', (132, 165)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (149, 165)) ('SDHB', 'Gene', (238, 242)) ('neoplasms', 'Phenotype', 'HP:0002664', (203, 212)) ('benign neuroendocrine neoplasms', 'Disease', 'MESH:D018358', (181, 212)) ('paraganglioma or pheochromocytoma', 'Disease', 'MESH:D010673', (132, 165)) ('benign neuroendocrine neoplasms', 'Disease', (181, 212)) ('neuroendocrine neoplasms', 'Phenotype', 'HP:0100634', (188, 212)) 26395 30073909 All individuals had consented to DNA testing, and all included individuals were identified as carriers of a SDHB gene variant predisposing to paraganglioma/pheochromocytoma. ('SDHB', 'Gene', (108, 112)) ('variant', 'Var', (118, 125)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (156, 172)) ('paraganglioma', 'Phenotype', 'HP:0002668', (142, 155)) ('paraganglioma/pheochromocytoma', 'Disease', (142, 172)) ('paraganglioma/pheochromocytoma', 'Disease', 'MESH:D010673', (142, 172)) ('SDHB', 'Gene', '6390', (108, 112)) 26400 30073909 For some diseases the age-at-onset distribution may depend on genetic characteristics, like the variant at the disease-susceptibility gene or the number of repeat units (for instance for the disease FSHD). ('FSHD', 'Gene', (199, 203)) ('variant', 'Var', (96, 103)) ('FSHD', 'Gene', '2489', (199, 203)) ('depend', 'Reg', (52, 58)) 26401 30073909 The estimation of the penetrance of pathogenic gene variants is ideally based on a large number of affected pedigrees, collected in a study with clear ascertainment rules, with a high uptake of DNA tests by family members and detailed descriptions of the phenotype of all variant carriers. ('eta', 'Gene', '1909', (227, 230)) ('eta', 'Gene', (227, 230)) ('variants', 'Var', (52, 60)) 26437 31328636 An alteration in neurohormonal signaling may act as candidate pathogenic contributor to the progressive pulmonary vascular remodeling process and the development of right heart failure. ('right heart failure', 'Disease', 'MESH:D006333', (165, 184)) ('pulmonary vascular remodeling process', 'CPA', (104, 141)) ('alteration', 'Var', (3, 13)) ('neurohormonal signaling', 'MPA', (17, 40)) ('heart failure', 'Phenotype', 'HP:0001635', (171, 184)) ('right heart failure', 'Phenotype', 'HP:0001708', (165, 184)) ('right heart failure', 'Disease', (165, 184)) ('men', 'Species', '9606', (157, 160)) ('development of right heart', 'Phenotype', 'HP:0010954', (150, 176)) 26502 31328636 The main advantage of 123I-MIBG imaging is related to its organ-specificity in detecting cardiac alterations secondary to sympathetic system activation. ('123I-MIBG', 'Chemical', '-', (22, 31)) ('cardiac alterations', 'MPA', (89, 108)) ('123I-MIBG', 'Var', (22, 31)) 26528 31328636 Despite the growing evidence of the important role of cardiac 123I-MIBG as a tool to evaluate organ-specific sympathetic nervous dysfunction, its clinical use has remained very limited because of economic concerns relative to reimbursement and funding. ('123I-MIBG', 'Var', (62, 71)) ('nervous dysfunction', 'Disease', 'MESH:D009422', (121, 140)) ('men', 'Species', '9606', (235, 238)) ('sympathetic nervous dysfunction', 'Phenotype', 'HP:0012332', (109, 140)) ('123I-MIBG', 'Chemical', '-', (62, 71)) ('nervous dysfunction', 'Disease', (121, 140)) 26590 31011769 Of these 45 patients, DNA analysis revealed germ-line mutations in the following genes: MEN2A in seven patients, SDHA in four patients, MAX in two patients, and NF-1 in one patient. ('MAX', 'Gene', (136, 139)) ('patients', 'Species', '9606', (12, 20)) ('NF-1', 'Gene', (161, 165)) ('patient', 'Species', '9606', (147, 154)) ('patient', 'Species', '9606', (173, 180)) ('mutations', 'Var', (54, 63)) ('SDHA', 'Gene', '6389', (113, 117)) ('patient', 'Species', '9606', (12, 19)) ('patient', 'Species', '9606', (126, 133)) ('patient', 'Species', '9606', (103, 110)) ('patients', 'Species', '9606', (147, 155)) ('patients', 'Species', '9606', (126, 134)) ('SDHA', 'Gene', (113, 117)) ('MEN2A', 'Gene', '5979', (88, 93)) ('patients', 'Species', '9606', (103, 111)) ('MEN2A', 'Gene', (88, 93)) 26630 30135421 HIF-2alpha-pVHL complex reveals broad genotype-phenotype correlations in HIF-2alpha-driven disease It is definitively established that mutations in transcription factor HIF-2alpha are causative of both neuroendocrine tumors (class 1 disease) and polycythemia (class 2 disease). ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (202, 223)) ('HIF-2alpha', 'Gene', '2034', (169, 179)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (202, 222)) ('polycythemia', 'Phenotype', 'HP:0001901', (246, 258)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (202, 223)) ('mutations', 'Var', (135, 144)) ('HIF-2alpha', 'Gene', '2034', (73, 83)) ('HIF-2alpha', 'Gene', '2034', (0, 10)) ('HIF-2alpha', 'Gene', (169, 179)) ('tumors', 'Phenotype', 'HP:0002664', (217, 223)) ('neuroendocrine tumors', 'Disease', (202, 223)) ('causative', 'Reg', (184, 193)) ('polycythemia', 'Disease', (246, 258)) ('tumor', 'Phenotype', 'HP:0002664', (217, 222)) ('HIF-2alpha', 'Gene', (73, 83)) ('polycythemia', 'Disease', 'MESH:D011086', (246, 258)) ('pVHL', 'Gene', '7428', (11, 15)) ('pVHL', 'Gene', (11, 15)) ('HIF-2alpha', 'Gene', (0, 10)) 26631 30135421 Here, we report the structure of HIF-2alpha peptide bound to pVHL-elongin B-elongin C (VBC) heterotrimeric complex, which shows topographical demarcation of class 1 and 2 mutations affecting residues predicted, and demonstrated via biophysical analyses, to differentially impact HIF-2alpha-pVHL interaction interface stability. ('interaction', 'Interaction', (295, 306)) ('elongin C', 'Gene', (76, 85)) ('VBC', 'Chemical', '-', (87, 90)) ('elongin B', 'Gene', '6923', (66, 75)) ('elongin B', 'Gene', (66, 75)) ('peptide', 'Chemical', 'MESH:D010455', (44, 51)) ('elongin C', 'Gene', '6921', (76, 85)) ('impact', 'Reg', (272, 278)) ('pVHL', 'Gene', '7428', (290, 294)) ('pVHL', 'Gene', '7428', (61, 65)) ('mutations', 'Var', (171, 180)) ('pVHL', 'Gene', (290, 294)) ('pVHL', 'Gene', (61, 65)) 26632 30135421 Concordantly, biochemical experiments showed that class 1 mutations disrupt pVHL affinity to HIF-2alpha more adversely than class 2 mutations directly or indirectly via impeding PHD2-mediated hydroxylation. ('mutations', 'Var', (58, 67)) ('pVHL', 'Gene', '7428', (76, 80)) ('pVHL', 'Gene', (76, 80)) ('impeding', 'NegReg', (169, 177)) ('affinity', 'Interaction', (81, 89)) ('PHD2', 'Gene', (178, 182)) ('PHD2', 'Gene', '54583', (178, 182)) ('disrupt', 'NegReg', (68, 75)) 26634 30135421 Hypoxia inducible factor (HIF)-2alpha transcription factor is mutated in polycythemia and various neuroendocrine tumors. ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (98, 119)) ('Hypoxia inducible factor (HIF)-2alpha', 'Gene', '2034', (0, 37)) ('tumors', 'Phenotype', 'HP:0002664', (113, 119)) ('neuroendocrine tumors', 'Disease', (98, 119)) ('polycythemia', 'Phenotype', 'HP:0001901', (73, 85)) ('polycythemia', 'Disease', (73, 85)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('mutated', 'Var', (62, 69)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (98, 118)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (98, 119)) ('polycythemia', 'Disease', 'MESH:D011086', (73, 85)) 26635 30135421 Here the authors present the crystal structure of a HIF-2alpha peptide bound to the pVHL-elongin B-elongin C (VBC) heterotrimeric complex and propose a classification scheme for HIF-2alpha mutations that helps to predict disease phenotype outcome. ('HIF-2alpha', 'Gene', (52, 62)) ('VBC', 'Chemical', '-', (110, 113)) ('elongin C', 'Gene', '6921', (99, 108)) ('elongin C', 'Gene', (99, 108)) ('pVHL', 'Gene', '7428', (84, 88)) ('HIF-2alpha', 'Gene', (178, 188)) ('pVHL', 'Gene', (84, 88)) ('elongin B', 'Gene', '6923', (89, 98)) ('mutations', 'Var', (189, 198)) ('peptide', 'Chemical', 'MESH:D010455', (63, 70)) ('elongin B', 'Gene', (89, 98)) 26636 30135421 Recent discoveries have established that mutations in EPAS1, the gene encoding hypoxia-inducible factor (HIF)-2alpha transcription factor, are causative of familial and sporadic instances of polycythemia, as well as various neuroendocrine tumors. ('mutations', 'Var', (41, 50)) ('polycythemia', 'Phenotype', 'HP:0001901', (191, 203)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (224, 244)) ('tumors', 'Phenotype', 'HP:0002664', (239, 245)) ('EPAS1', 'Gene', (54, 59)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (224, 245)) ('polycythemia', 'Disease', 'MESH:D011086', (191, 203)) ('causative', 'Reg', (143, 152)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (224, 245)) ('tumor', 'Phenotype', 'HP:0002664', (239, 244)) ('familial', 'Disease', (156, 164)) ('neuroendocrine tumors', 'Disease', (224, 245)) ('hypoxia', 'Disease', (79, 86)) ('hypoxia', 'Disease', 'MESH:D000860', (79, 86)) ('polycythemia', 'Disease', (191, 203)) ('EPAS1', 'Gene', '2034', (54, 59)) 26641 30135421 In studies featuring large cohorts of patients, EPAS1 mutations were identified in 5.7% of patients presenting with sporadic PPGLs (18/315, range of 2.3-12%), establishing EPAS1 mutations as a major driver of PPGL. ('patients', 'Species', '9606', (91, 99)) ('PPGLs', 'Disease', (125, 130)) ('EPAS1', 'Gene', '2034', (48, 53)) ('mutations', 'Var', (54, 63)) ('EPAS1', 'Gene', '2034', (172, 177)) ('EPAS1', 'Gene', (48, 53)) ('EPAS1', 'Gene', (172, 177)) ('patients', 'Species', '9606', (38, 46)) 26642 30135421 EPAS1 mutations have been shown, regardless of associated phenotype, to result in an increase in HIF-2alpha stability, by disrupting negative regulation via prolyl hydroxylase domain containing enzyme (PHD) and/or von Hippel-Lindau protein (pVHL) affinity to HIF-2alpha. ('EPAS1', 'Gene', '2034', (0, 5)) ('pVHL', 'Gene', '7428', (241, 245)) ('pVHL', 'Gene', (241, 245)) ('EPAS1', 'Gene', (0, 5)) ('disrupting', 'NegReg', (122, 132)) ('HIF-2alpha stability', 'Disease', (97, 117)) ('von Hippel-Lindau', 'Disease', (214, 231)) ('increase', 'PosReg', (85, 93)) ('HIF-2alpha stability', 'Disease', 'MESH:D043171', (97, 117)) ('affinity', 'Interaction', (247, 255)) ('negative regulation', 'MPA', (133, 152)) ('mutations', 'Var', (6, 15)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (214, 231)) 26646 30135421 Mutations in both VHL and EGLN1 (encodes PHD2) are known to cause both polycythemia and PPGL. ('polycythemia', 'Disease', (71, 83)) ('VHL', 'Gene', '7428', (18, 21)) ('cause', 'Reg', (60, 65)) ('EGLN1', 'Gene', (26, 31)) ('polycythemia', 'Disease', 'MESH:D011086', (71, 83)) ('polycythemia', 'Phenotype', 'HP:0001901', (71, 83)) ('PHD2', 'Gene', '54583', (41, 45)) ('Mutations', 'Var', (0, 9)) ('EGLN1', 'Gene', '54583', (26, 31)) ('PHD2', 'Gene', (41, 45)) ('VHL', 'Gene', (18, 21)) ('PPGL', 'Disease', (88, 92)) 26647 30135421 VHL mutation associated with PGL, polycythemia, and somatostatinoma has also been reported. ('associated', 'Reg', (13, 23)) ('somatostatinoma', 'Disease', 'MESH:D013005', (52, 67)) ('somatostatinoma', 'Disease', (52, 67)) ('polycythemia', 'Disease', (34, 46)) ('mutation', 'Var', (4, 12)) ('PGL', 'Disease', (29, 32)) ('VHL', 'Gene', (0, 3)) ('polycythemia', 'Phenotype', 'HP:0001901', (34, 46)) ('polycythemia', 'Disease', 'MESH:D011086', (34, 46)) ('VHL', 'Gene', '7428', (0, 3)) 26648 30135421 However, pheochromocytoma-associated VHL mutations have previously been suspected of triggering oncogenesis in a HIF-independent manner. ('mutations', 'Var', (41, 50)) ('pheochromocytoma', 'Disease', (9, 25)) ('VHL', 'Gene', (37, 40)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (9, 25)) ('VHL', 'Gene', '7428', (37, 40)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (9, 25)) 26649 30135421 It has been noted that EPAS1 mutations associated with ECYT4 are genetically distinct from those that are associated with neuroendocrine tumors. ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (122, 143)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (122, 143)) ('ECYT4', 'Gene', '2034', (55, 60)) ('tumors', 'Phenotype', 'HP:0002664', (137, 143)) ('mutations', 'Var', (29, 38)) ('ECYT4', 'Gene', (55, 60)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) ('neuroendocrine tumors', 'Disease', (122, 143)) ('associated', 'Reg', (39, 49)) ('EPAS1', 'Gene', '2034', (23, 28)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (122, 142)) ('EPAS1', 'Gene', (23, 28)) 26650 30135421 However, to date, HIF-2alpha activating mutations associated with different phenotypes (ECYT4, Pacak-Zhuang Syndrome, sporadic PPGL) have not been studied in parallel. ('HIF-2alpha', 'Gene', (18, 28)) ('Pacak-Zhuang Syndrome', 'Disease', (95, 116)) ('ECYT4', 'Gene', '2034', (88, 93)) ('mutations', 'Var', (40, 49)) ('ECYT4', 'Gene', (88, 93)) 26652 30135421 In one exceptional case, mutation of EPAS1 was associated with central nervous system hemangioblastoma. ('central nervous system hemangioblastoma', 'Phenotype', 'HP:0006880', (63, 102)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (86, 102)) ('central nervous system hemangioblastoma', 'Disease', 'MESH:D018325', (63, 102)) ('mutation', 'Var', (25, 33)) ('central nervous system hemangioblastoma', 'Disease', (63, 102)) ('EPAS1', 'Gene', '2034', (37, 42)) ('associated', 'Reg', (47, 57)) ('EPAS1', 'Gene', (37, 42)) 26655 30135421 Others have also categorized diseases associated with EPAS1 mutations in a similar fashion, and class 2 disease has been previously described as ECYT4 while classes 1a and 1b have been jointly described as Pacak-Zhuang syndrome. ('EPAS1', 'Gene', (54, 59)) ('ECYT4', 'Gene', '2034', (145, 150)) ('Pacak-Zhuang syndrome', 'Disease', (206, 227)) ('ECYT4', 'Gene', (145, 150)) ('mutations', 'Var', (60, 69)) ('EPAS1', 'Gene', '2034', (54, 59)) 26658 30135421 Conversely, class 2 disease patients present with germline mutations and as families in 60% of reported cases (Table 1). ('germline mutations', 'Var', (50, 68)) ('patients', 'Species', '9606', (28, 36)) ('class 2 disease', 'Disease', (12, 27)) 26659 30135421 Mutations associated with class 1 disease are typically located between amino acid residues 529 and 532, which contain proline 531, the primary hydroxylation site of HIF-2alpha (Fig. ('class 1 disease', 'Disease', (26, 41)) ('associated', 'Reg', (10, 20)) ('Mutations', 'Var', (0, 9)) ('proline', 'Chemical', 'MESH:D011392', (119, 126)) 26660 30135421 However, this topographical segregation is not absolute, as mutations of D539 are found in patients of all disease classes. ('mutations', 'Var', (60, 69)) ('found', 'Reg', (82, 87)) ('D539', 'Gene', (73, 77)) ('patients', 'Species', '9606', (91, 99)) 26661 30135421 Interestingly, there is no overlap in the specific mutations associated with class 1 and class 2 disease, as the mutations affecting D539 are not the same among class 1 and class 2 (D539N in class 1a and 1b, D539Y in class 1c, D539E in class 2; Fig. ('D539N', 'Var', (182, 187)) ('D539Y', 'Var', (208, 213)) ('D539Y', 'Mutation', 'p.D539Y', (208, 213)) ('D539', 'Gene', (133, 137)) ('D539N', 'Mutation', 'p.D539N', (182, 187)) ('D539E', 'Mutation', 'p.D539E', (227, 232)) ('D539E', 'Var', (227, 232)) 26662 30135421 For example, the A530V mutation has been reported in patients with class 1a, class 1b, and class 1c disease (Fig. ('class 1c disease', 'Disease', (91, 107)) ('reported', 'Reg', (41, 49)) ('class 1b', 'Disease', (77, 85)) ('class 1a', 'Disease', (67, 75)) ('patients', 'Species', '9606', (53, 61)) ('A530V', 'Mutation', 'p.A530V', (17, 22)) ('A530V', 'Var', (17, 22)) 26663 30135421 Thus, the broad phenotypic differences between class 1 and class 2 disease stem from genetic differences while the differences between subclasses of class 1 disease might be related to the presence of additional mutations or the occurrence of EPAS1 mutations during embryonic development or later in life. ('EPAS1', 'Gene', '2034', (243, 248)) ('EPAS1', 'Gene', (243, 248)) ('mutations', 'Var', (249, 258)) ('related', 'Reg', (174, 181)) ('stem from', 'Reg', (75, 84)) 26664 30135421 Our first approach for testing the differences between class 1 and class 2 EPAS1 mutations was to employ a suite of mutation prediction software, including PolyPhen-2, SIFT, MutationTaster2, and PROVEAN. ('EPAS1', 'Gene', (75, 80)) ('SIFT', 'Disease', 'None', (168, 172)) ('mutations', 'Var', (81, 90)) ('EPAS1', 'Gene', '2034', (75, 80)) ('SIFT', 'Disease', (168, 172)) 26665 30135421 MutationTaster2 annotated all class 1 mutations as disease causing while SIFT and Polyphen-2 classified 77.8% (14/18) and 83.3% (15/18) of class 1 mutations as probably damaging, respectively. ('mutations', 'Var', (38, 47)) ('disease causing', 'Reg', (51, 66)) ('SIFT', 'Disease', (73, 77)) ('SIFT', 'Disease', 'None', (73, 77)) 26667 30135421 The two notable sites of non-conservation are HIF-1alpha Met561/HIF-2alpha Thr528 and the insertion of HIF-2alpha Gly537, which is not present in HIF-1alpha. ('Thr528', 'Var', (75, 81)) ('Thr528', 'Chemical', '-', (75, 81)) ('Met561/HIF-2alpha', 'Var', (57, 74)) ('Met561', 'Chemical', '-', (57, 63)) ('Gly537', 'Chemical', '-', (114, 120)) ('HIF-2alpha', 'Gene', (103, 113)) 26668 30135421 Intriguingly, G537 is the most commonly mutated residue in HIF-2alpha driven disease while the substitution of the non-polar, sulfur-containing Met residue with a polar Thr residue supports the notion that HIF-2alpha peptide might not bind pVHL with an identical motif as HIF-1alpha. ('pVHL', 'Gene', '7428', (240, 244)) ('pVHL', 'Gene', (240, 244)) ('G537', 'Var', (14, 18)) ('substitution', 'Var', (95, 107)) ('sulfur', 'Chemical', 'MESH:D013455', (126, 132)) ('peptide', 'Chemical', 'MESH:D010455', (217, 224)) ('HIF-2alpha driven disease', 'Disease', (59, 84)) ('HIF-2alpha driven disease', 'Disease', 'MESH:D004194', (59, 84)) ('Thr', 'Chemical', 'MESH:D013912', (169, 172)) ('mutated', 'Reg', (40, 47)) 26674 30135421 The HIF-2alpha peptide binds to pVHL as an extended strand with N-terminal (residues 527-534) and C-terminal (residues 539-540) pVHL contact sites (Fig. ('pVHL', 'Gene', '7428', (128, 132)) ('residues 539-540', 'Var', (110, 126)) ('residues 527-534', 'Var', (76, 92)) ('peptide', 'Chemical', 'MESH:D010455', (15, 22)) ('pVHL', 'Gene', (128, 132)) ('pVHL', 'Gene', '7428', (32, 36)) ('pVHL', 'Gene', (32, 36)) 26677 30135421 Further, RMSD of Calpha atoms of the HIF-2alpha peptide compared with HIF-1alpha peptide from previously reported co-crystal structures also revealed rather minor changes in conformation (0.78 A with 1LM8, 0.85 A with 1LQB). ('peptide', 'Chemical', 'MESH:D010455', (48, 55)) ('0.78', 'Var', (188, 192)) ('peptide', 'Chemical', 'MESH:D010455', (81, 88)) ('1LM8', 'Var', (200, 204)) ('RMSD of Calpha atoms', 'Disease', (9, 29)) ('conformation', 'MPA', (174, 186)) ('changes', 'Reg', (163, 170)) ('RMSD of Calpha atoms', 'Disease', 'MESH:C564286', (9, 29)) 26678 30135421 The substitution of the amino acid three residues N-terminal of the primary hydroxylation site (Met561/Thr528) had no effect on the local conformation, with both residues packed against pVHL F91 (Fig. ('local conformation', 'MPA', (132, 150)) ('pVHL', 'Gene', '7428', (186, 190)) ('Met561', 'Chemical', '-', (96, 102)) ('pVHL', 'Gene', (186, 190)) ('Met561/Thr528', 'Var', (96, 109)) ('Thr528', 'Chemical', '-', (103, 109)) 26679 30135421 The insertion of Gly537, seen in HIF-2alpha, results in an increased sinusoidal nature of the HIF-2alpha peptide but that only results in local conformational changes (Fig. ('Gly537', 'Chemical', '-', (17, 23)) ('conformational changes', 'MPA', (144, 166)) ('peptide', 'Chemical', 'MESH:D010455', (105, 112)) ('Gly537', 'Var', (17, 23)) ('sinusoidal nature', 'MPA', (69, 86)) ('increased', 'PosReg', (59, 68)) 26681 30135421 The hydroxylated P531 (Hyp531) is almost completely buried in a highly complementary pVHL pocket composed of residues W88, Y98, I109, S111, Y112, H115, and W117 (Fig. ('pVHL', 'Gene', (85, 89)) ('H115', 'Var', (146, 150)) ('W88', 'Var', (118, 121)) ('I109', 'Var', (128, 132)) ('W117', 'Var', (156, 160)) ('Y112', 'Var', (140, 144)) ('Y98', 'Var', (123, 126)) ('S111', 'Var', (134, 138)) ('pVHL', 'Gene', '7428', (85, 89)) 26683 30135421 The carbonyl oxygen of HIF-2alpha E527 hydrogen bonds to the side chain of both pVHL N67 and pVHL R69 (Fig. ('oxygen', 'Chemical', 'MESH:D010100', (13, 19)) ('E527', 'Var', (34, 38)) ('hydrogen', 'Chemical', 'MESH:D006859', (39, 47)) ('hydrogen', 'Reg', (39, 47)) ('pVHL', 'Gene', '7428', (93, 97)) ('pVHL', 'Gene', '7428', (80, 84)) ('pVHL', 'Gene', (93, 97)) ('pVHL', 'Gene', (80, 84)) ('HIF-2alpha', 'Gene', (23, 33)) 26686 30135421 F540 serves as a C-terminal anchor, contacting pVHL G106, that re-establishes contact between pVHL and HIF-2alpha (Fig. ('contact', 'Interaction', (78, 85)) ('pVHL', 'Gene', '7428', (94, 98)) ('pVHL', 'Gene', (94, 98)) ('pVHL', 'Gene', '7428', (47, 51)) ('F540', 'Var', (0, 4)) ('pVHL', 'Gene', (47, 51)) 26687 30135421 Interestingly, the majority of reported class 2 mutations (82%) are localized to the kink region whereas class 1 mutations affect residues making contact with pVHL (Fig. ('class 2', 'Gene', (40, 47)) ('residues', 'Protein', (130, 138)) ('pVHL', 'Gene', '7428', (159, 163)) ('pVHL', 'Gene', (159, 163)) ('affect', 'Reg', (123, 129)) ('mutations', 'Var', (48, 57)) 26688 30135421 Thus, a prediction based on our structural analysis is that class 1 mutations would have a greater negative impact on pVHL-HIF-2alpha interaction than class 2 mutations. ('negative', 'NegReg', (99, 107)) ('pVHL', 'Gene', '7428', (118, 122)) ('pVHL', 'Gene', (118, 122)) ('mutations', 'Var', (68, 77)) ('interaction', 'Interaction', (134, 145)) 26689 30135421 To test our hypothesis that class 1 mutations have a more adverse effect on pVHL affinity (referring specifically to the strength of interaction between HIF-2alpha peptide or protein and pVHL), we conducted both steady-state and kinetic binding experiments. ('interaction', 'Interaction', (133, 144)) ('pVHL', 'Gene', '7428', (76, 80)) ('pVHL', 'Gene', (76, 80)) ('mutations', 'Var', (36, 45)) ('pVHL', 'Gene', '7428', (187, 191)) ('peptide', 'Chemical', 'MESH:D010455', (164, 171)) ('pVHL', 'Gene', (187, 191)) ('adverse', 'NegReg', (58, 65)) 26690 30135421 Previous ELISA-based experiments with polycythemia-associated HIF-2alpha mutants suggested that class 2 mutants had no effect on VBC affinity. ('mutants', 'Var', (104, 111)) ('VBC', 'Protein', (129, 132)) ('mutants', 'Var', (73, 80)) ('polycythemia', 'Disease', (38, 50)) ('VBC', 'Chemical', '-', (129, 132)) ('polycythemia', 'Phenotype', 'HP:0001901', (38, 50)) ('polycythemia', 'Disease', 'MESH:D011086', (38, 50)) ('HIF-2alpha', 'Gene', (62, 72)) 26691 30135421 Similarly, we show that steady-state ELISA experiments conducted with HIF-2alphaOH (amino acids 523-541) peptides (i.e., hydroxyl group synthetically added to P531) and purified VBC complex suggested that both class 1 and class 2 mutations had negligible or minimal effect on pVHL affinity (Fig. ('peptide', 'Chemical', 'MESH:D010455', (105, 112)) ('pVHL', 'Gene', '7428', (276, 280)) ('pVHL', 'Gene', (276, 280)) ('mutations', 'Var', (230, 239)) ('VBC', 'Chemical', '-', (178, 181)) ('HIF-2alphaOH', 'Gene', (70, 82)) 26692 30135421 4a), with the exception of the P531A mutant, which completely abolished binding to VBC as expected. ('abolished', 'NegReg', (62, 71)) ('VBC', 'Chemical', '-', (83, 86)) ('binding', 'Interaction', (72, 79)) ('P531A', 'Mutation', 'p.P531A', (31, 36)) ('P531A', 'Var', (31, 36)) ('VBC', 'Protein', (83, 86)) 26693 30135421 However, we found that class 1 mutations, in general, have a more deleterious effect on pVHL affinity than class 2 mutations when analyzed via pull-down experiments using in vitro transcribed and translated (IVTT) pVHL under both stringent and mild buffer conditions (Fig. ('mutations', 'Var', (31, 40)) ('pVHL', 'Gene', '7428', (88, 92)) ('pVHL', 'Gene', '7428', (214, 218)) ('pVHL', 'Gene', (88, 92)) ('pVHL', 'Gene', (214, 218)) ('effect', 'Reg', (78, 84)) ('affinity', 'MPA', (93, 101)) 26694 30135421 Intriguingly, HIF-2alphaOH A530V class 1 peptide consistently bound to pVHL or VBC with an affinity similar to that of HIF-2alphaOH WT peptide and other class 2 mutants, such as M535I. ('VBC', 'Chemical', '-', (79, 82)) ('peptide', 'Chemical', 'MESH:D010455', (135, 142)) ('bound', 'Interaction', (62, 67)) ('A530V', 'Mutation', 'p.A530V', (27, 32)) ('peptide', 'Chemical', 'MESH:D010455', (41, 48)) ('M535I', 'Var', (178, 183)) ('pVHL', 'Gene', '7428', (71, 75)) ('pVHL', 'Gene', (71, 75)) ('M535I', 'Mutation', 'p.M535I', (178, 183)) ('HIF-2alphaOH', 'Gene', (14, 26)) 26695 30135421 To gain further quantitative insight, we next analyzed the effect of HIF-2alpha mutations on the kinetics of HIF-2alpha peptide binding to pVHL via biolayer interferometry (BLI), which measures the rate of association and dissociation of an analyte molecule (purified VBC complex) to and from an immobilized bait molecule (biotinylated HIF-2alphaOH peptide). ('HIF-2alpha', 'Gene', (69, 79)) ('mutations', 'Var', (80, 89)) ('VBC', 'Chemical', '-', (268, 271)) ('association', 'Interaction', (206, 217)) ('peptide', 'Chemical', 'MESH:D010455', (349, 356)) ('pVHL', 'Gene', '7428', (139, 143)) ('pVHL', 'Gene', (139, 143)) ('dissociation', 'MPA', (222, 234)) ('peptide', 'Chemical', 'MESH:D010455', (120, 127)) 26698 30135421 Most mutant HIF-2alphaOH peptides displayed decreased binding to VBC, consistent with steady-state pull down experiments (Table 2). ('VBC', 'Chemical', '-', (65, 68)) ('HIF-2alphaOH', 'Gene', (12, 24)) ('peptides', 'Protein', (25, 33)) ('mutant', 'Var', (5, 11)) ('VBC', 'Protein', (65, 68)) ('peptide', 'Chemical', 'MESH:D010455', (25, 32)) ('binding', 'Interaction', (54, 61)) ('decreased', 'NegReg', (44, 53)) 26699 30135421 The four mutations with the most deleterious effect on pVHL affinity all belonged to class 1 (L529P, A530T, P531A, Y532C; Fig. ('pVHL', 'Gene', '7428', (55, 59)) ('pVHL', 'Gene', (55, 59)) ('A530T', 'Var', (101, 106)) ('L529P', 'Mutation', 'p.L529P', (94, 99)) ('A530T', 'Mutation', 'c.530A>T', (101, 106)) ('Y532C', 'Var', (115, 120)) ('P531A', 'Mutation', 'p.P531A', (108, 113)) ('L529P', 'Var', (94, 99)) ('Y532C', 'Mutation', 'p.Y532C', (115, 120)) ('P531A', 'Var', (108, 113)) 26700 30135421 The L529P mutation possibly results in steric clash with pVHL N67, resulting in a disruption of its hydrogen bond to HIF-2alpha E527. ('L529P', 'Var', (4, 9)) ('hydrogen bond', 'MPA', (100, 113)) ('hydrogen', 'Chemical', 'MESH:D006859', (100, 108)) ('disruption', 'NegReg', (82, 92)) ('results in', 'Reg', (28, 38)) ('pVHL', 'Gene', '7428', (57, 61)) ('pVHL', 'Gene', (57, 61)) ('L529P', 'Mutation', 'p.L529P', (4, 9)) 26701 30135421 Y532 normally packs against the sidechain of pVHL H110 and the Y532C mutation would result in diminished van der Waals interaction. ('pVHL', 'Gene', '7428', (45, 49)) ('Y532C', 'Var', (63, 68)) ('pVHL', 'Gene', (45, 49)) ('van der Waals interaction', 'MPA', (105, 130)) ('Y532C', 'Mutation', 'p.Y532C', (63, 68)) ('diminished', 'NegReg', (94, 104)) ('Y532', 'Var', (0, 4)) 26702 30135421 The P531A mutation would result in the loss of important hydrogen bonds, shown in Fig. ('hydrogen', 'Chemical', 'MESH:D006859', (57, 65)) ('P531A', 'Mutation', 'p.P531A', (4, 9)) ('P531A', 'Var', (4, 9)) ('hydrogen bonds', 'MPA', (57, 71)) ('loss', 'NegReg', (39, 43)) 26703 30135421 Interestingly, and consistent with our steady-state observations, the A530V (Kd = 219 nM) and A530T (Kd = 513 nM) mutations had different effects on pVHL affinity, despite affecting the same residue. ('affecting', 'Reg', (172, 181)) ('pVHL', 'Gene', '7428', (149, 153)) ('A530T', 'Mutation', 'c.530A>T', (94, 99)) ('A530V', 'Mutation', 'p.A530V', (70, 75)) ('pVHL', 'Gene', (149, 153)) ('A530V', 'Var', (70, 75)) 26704 30135421 The A530V HIF-2alphaOH peptide dissociated more slowly from VBC than WT (kd = 5.8 x 10-3 s-1) whereas the A530T HIF-2alphaOH peptide (kd = 18 x 10-3 s-1) behaved similarly to the other class 1 mutant peptides. ('peptide', 'Chemical', 'MESH:D010455', (200, 207)) ('peptide', 'Chemical', 'MESH:D010455', (125, 132)) ('A530V', 'Mutation', 'p.A530V', (4, 9)) ('A530V', 'Var', (4, 9)) ('dissociated', 'MPA', (31, 42)) ('peptide', 'Chemical', 'MESH:D010455', (23, 30)) ('VBC', 'Chemical', '-', (60, 63)) ('slowly', 'NegReg', (48, 54)) ('kd = 5', 'Species', '752783', (73, 79)) ('A530T', 'Var', (106, 111)) ('A530T', 'Mutation', 'c.530A>T', (106, 111)) 26705 30135421 Due to the extensive hydrogen bond network involving HIF-2alpha Hyp531, it is possible that the polar nature of the A530T mutation results in a degree of interference. ('hydrogen', 'Chemical', 'MESH:D006859', (21, 29)) ('A530T', 'Var', (116, 121)) ('A530T', 'Mutation', 'c.530A>T', (116, 121)) ('interference', 'MPA', (154, 166)) ('hydrogen bond network', 'MPA', (21, 42)) 26706 30135421 Specifically, A530 points toward pVHL Y98, which hydrogen bonds to the Hyp531 carbonyl oxygen atom (Fig. ('A530', 'Var', (14, 18)) ('hydrogen', 'Chemical', 'MESH:D006859', (49, 57)) ('pVHL', 'Gene', '7428', (33, 37)) ('hydrogen', 'Reg', (49, 57)) ('oxygen', 'Chemical', 'MESH:D010100', (87, 93)) ('pVHL', 'Gene', (33, 37)) 26707 30135421 Hydrogen bonding between the A530T mutant residue and pVHL Y98 may disrupt the Hyp531 pocket, promoting dissociation of pVHL. ('Hydrogen', 'Chemical', 'MESH:D006859', (0, 8)) ('Y98', 'Var', (59, 62)) ('promoting', 'PosReg', (94, 103)) ('A530T', 'Var', (29, 34)) ('disrupt', 'NegReg', (67, 74)) ('Hyp531 pocket', 'MPA', (79, 92)) ('A530T', 'Mutation', 'c.530A>T', (29, 34)) ('pVHL', 'Gene', '7428', (54, 58)) ('pVHL', 'Gene', '7428', (120, 124)) ('pVHL', 'Gene', (54, 58)) ('dissociation', 'MPA', (104, 116)) ('pVHL', 'Gene', (120, 124)) 26708 30135421 The decreased dissociation rate seen with the A530V (Table 2) mutation lends a degree of support to this argument, as the nonpolar mutation would possibly result in increased van der Waals interactions with the adjacent pVHL W88 residue without possibly hydrogen bonding to pVHL Y98. ('pVHL', 'Gene', '7428', (220, 224)) ('decreased', 'NegReg', (4, 13)) ('pVHL', 'Gene', (220, 224)) ('interactions', 'Interaction', (189, 201)) ('dissociation rate', 'MPA', (14, 31)) ('van der Waals', 'MPA', (175, 188)) ('A530V', 'Mutation', 'p.A530V', (46, 51)) ('hydrogen', 'Chemical', 'MESH:D006859', (254, 262)) ('pVHL', 'Gene', '7428', (274, 278)) ('A530V', 'Var', (46, 51)) ('pVHL', 'Gene', (274, 278)) ('increased', 'PosReg', (165, 174)) 26709 30135421 Interestingly, the G537R class 2 mutation (Kd = 348 nM; ka = 3.0 x 104 Ms-1; kd = 10 x 10-3 s-1) had a near identical effect on the kinetics of binding to VBC as did the F540L class 2 mutation (Kd = 345 nM; ka = 3.1 x 104 Ms-1; kd = 10 x 10-3 s-1), despite being localized to the kink region that does not make any significant contacts with pVHL. ('G537R', 'Mutation', 'rs137853036', (19, 24)) ('pVHL', 'Gene', '7428', (341, 345)) ('binding', 'Interaction', (144, 151)) ('pVHL', 'Gene', (341, 345)) ('F540L', 'Mutation', 'p.F540L', (170, 175)) ('G537R', 'Var', (19, 24)) ('VBC', 'Protein', (155, 158)) ('VBC', 'Chemical', '-', (155, 158)) 26711 30135421 3a), mutation of G537 to a bulkier amino acid (tryptophan or arginine; class 2 mutations) is predicted to result in steric clash with pVHL R108. ('steric clash', 'Disease', (116, 128)) ('pVHL', 'Gene', '7428', (134, 138)) ('arginine', 'Chemical', 'MESH:D001120', (61, 69)) ('result in', 'Reg', (106, 115)) ('tryptophan', 'Chemical', 'MESH:D014364', (47, 57)) ('G537', 'Var', (17, 21)) ('pVHL', 'Gene', (134, 138)) 26712 30135421 This is an important observation as G537 is not conserved in HIF-1alpha and is also the most commonly mutated residue in HIF-2alpha driven disease (Fig. ('HIF-2alpha driven disease', 'Disease', (121, 146)) ('G537', 'Var', (36, 40)) ('HIF-2alpha driven disease', 'Disease', 'MESH:D004194', (121, 146)) 26713 30135421 Other class 2 mutant peptides (M535I, D539E) bound to VBC with little defect, as compared to WT (Fig. ('M535I', 'Mutation', 'p.M535I', (31, 36)) ('VBC', 'Protein', (54, 57)) ('bound', 'Interaction', (45, 50)) ('VBC', 'Chemical', '-', (54, 57)) ('D539E', 'Mutation', 'p.D539E', (38, 43)) ('peptide', 'Chemical', 'MESH:D010455', (21, 28)) ('D539E', 'Var', (38, 43)) ('M535I', 'Var', (31, 36)) 26714 30135421 Thus, although BLI kinetic analysis revealed a distinguishable kinetic trend between class 1 and class 2 mutations, the disease class associated with HIF-2alpha mutations could not be absolutely predicted solely by determining affinity for pVHL due to outliers like A530V. ('A530V', 'Mutation', 'p.A530V', (266, 271)) ('pVHL', 'Gene', '7428', (240, 244)) ('pVHL', 'Gene', (240, 244)) ('A530V', 'Var', (266, 271)) ('HIF-2alpha', 'Gene', (150, 160)) 26715 30135421 Considering that prolyl hydroxylation is indispensable for HIF-2alpha binding to pVHL, we next examined the notion that the A530V mutation negatively influences hydroxylation of HIF-2alpha via PHD2, which would attenuate HIF-2alpha A530V binding affinity for pVHL. ('PHD2', 'Gene', (193, 197)) ('PHD2', 'Gene', '54583', (193, 197)) ('binding affinity', 'Interaction', (238, 254)) ('negatively', 'NegReg', (139, 149)) ('pVHL', 'Gene', '7428', (81, 85)) ('pVHL', 'Gene', (259, 263)) ('pVHL', 'Gene', '7428', (259, 263)) ('A530V', 'Mutation', 'p.A530V', (124, 129)) ('hydroxylation', 'MPA', (161, 174)) ('A530V', 'Mutation', 'p.A530V', (232, 237)) ('A530V', 'Var', (124, 129)) ('attenuate', 'NegReg', (211, 220)) ('influences', 'Reg', (150, 160)) ('pVHL', 'Gene', (81, 85)) 26719 30135421 4b), M535I class 2 mutant still retained affinity for pVHL following incubation with HIS6-PHD2 (Fig. ('PHD2', 'Gene', (90, 94)) ('PHD2', 'Gene', '54583', (90, 94)) ('M535I', 'Var', (5, 10)) ('M535I', 'Mutation', 'p.M535I', (5, 10)) ('affinity', 'MPA', (41, 49)) ('pVHL', 'Gene', '7428', (54, 58)) ('pVHL', 'Gene', (54, 58)) 26720 30135421 However, A530V peptide was only minimally able to bind pVHL, much like the A530T mutant (Fig. ('pVHL', 'Gene', '7428', (55, 59)) ('peptide', 'Chemical', 'MESH:D010455', (15, 22)) ('bind', 'Interaction', (50, 54)) ('pVHL', 'Gene', (55, 59)) ('A530V', 'Mutation', 'p.A530V', (9, 14)) ('A530T', 'Var', (75, 80)) ('A530V', 'Var', (9, 14)) ('A530T', 'Mutation', 'c.530A>T', (75, 80)) 26721 30135421 These results suggest that the A530V mutation impedes PHD2-mediated hydroxylation of P531, which negatively impacts HIF-2alpha binding affinity for pVHL. ('HIF-2alpha', 'Protein', (116, 126)) ('negatively impacts', 'NegReg', (97, 115)) ('binding', 'Interaction', (127, 134)) ('PHD2', 'Gene', (54, 58)) ('pVHL', 'Gene', '7428', (148, 152)) ('PHD2', 'Gene', '54583', (54, 58)) ('pVHL', 'Gene', (148, 152)) ('P531', 'Gene', (85, 89)) ('A530V', 'Mutation', 'p.A530V', (31, 36)) ('A530V', 'Var', (31, 36)) ('impedes', 'NegReg', (46, 53)) 26722 30135421 Due to the importance of L574 for hydroxylation of HIF-1alpha, the fact that this residue is conserved in HIF-2alpha (L542), and the observation that the residue is mutated in class 1 disease (L542P, patient 7 in Supplementary Data 1), we posited that this mutation specifically affects hydroxylation but not pVHL affinity per se, similar to the A530V class 1 mutation. ('L542P', 'Mutation', 'p.L542P', (193, 198)) ('pVHL', 'Gene', '7428', (309, 313)) ('pVHL', 'Gene', (309, 313)) ('mutation', 'Var', (257, 265)) ('hydroxylation', 'MPA', (287, 300)) ('affects', 'Reg', (279, 286)) ('patient', 'Species', '9606', (200, 207)) ('A530V', 'Mutation', 'p.A530V', (346, 351)) 26724 30135421 However, synthetic addition of a hydroxyl group to P531 in HIF-2alphaOH L542 peptide rescued binding to pVHL with an affinity similar to HIF-2alphaOH WT peptide, confirming that the L542P mutation specifically abolishes PHD2-catalyzed hydroxylation (Fig. ('L542P', 'Var', (182, 187)) ('pVHL', 'Gene', '7428', (104, 108)) ('pVHL', 'Gene', (104, 108)) ('rescued', 'PosReg', (85, 92)) ('PHD2', 'Gene', (220, 224)) ('peptide', 'Chemical', 'MESH:D010455', (77, 84)) ('binding', 'Interaction', (93, 100)) ('PHD2', 'Gene', '54583', (220, 224)) ('L542P', 'Mutation', 'p.L542P', (182, 187)) ('HIF-2alphaOH', 'Gene', (59, 71)) ('peptide', 'Chemical', 'MESH:D010455', (153, 160)) ('abolishes', 'NegReg', (210, 219)) 26725 30135421 These results demonstrate that a subset of class 1 mutations specifically disrupt PHD2-mediated regulation, which ultimately leads to a severe reduction in pVHL binding. ('class 1', 'Gene', (43, 50)) ('mutations', 'Var', (51, 60)) ('binding', 'Interaction', (161, 168)) ('pVHL', 'Gene', '7428', (156, 160)) ('PHD2', 'Gene', (82, 86)) ('PHD2', 'Gene', '54583', (82, 86)) ('pVHL', 'Gene', (156, 160)) ('reduction', 'NegReg', (143, 152)) ('disrupt', 'NegReg', (74, 81)) 26726 30135421 The presence of class 1 HIF-2alpha mutants that bind pVHL like WT when synthetically hydroxylated but fail to be hydroxylated by PHD2 suggested to us that class 1 and class 2 mutations may differentially affect PHD2 binding. ('binding', 'Interaction', (216, 223)) ('PHD2', 'Gene', (211, 215)) ('PHD2', 'Gene', '54583', (211, 215)) ('PHD2', 'Gene', (129, 133)) ('affect', 'Reg', (204, 210)) ('mutants', 'Var', (35, 42)) ('PHD2', 'Gene', '54583', (129, 133)) ('pVHL', 'Gene', '7428', (53, 57)) ('mutations', 'Var', (175, 184)) ('pVHL', 'Gene', (53, 57)) ('HIF-2alpha', 'Gene', (24, 34)) 26727 30135421 To first test this hypothesis, we performed steady-state pull-down experiments with HIF-2alpha peptides (523-542) and purified HIS6-PHD2 (181-426). ('PHD2', 'Gene', (132, 136)) ('523-542', 'Var', (105, 112)) ('HIF-2alpha', 'Gene', (84, 94)) ('peptide', 'Chemical', 'MESH:D010455', (95, 102)) ('PHD2', 'Gene', '54583', (132, 136)) 26731 30135421 We observed that all tested HIF-2alpha mutations result in decreased affinity for PHD2 (Supplementary Figure 6a). ('decreased', 'NegReg', (59, 68)) ('PHD2', 'Gene', (82, 86)) ('mutations', 'Var', (39, 48)) ('PHD2', 'Gene', '54583', (82, 86)) ('affinity', 'MPA', (69, 77)) ('HIF-2alpha', 'Gene', (28, 38)) 26732 30135421 However, the M535I class 2 mutant was not as deleterious in this regard, which is consistent with its ability to be hydroxylated by PHD2 in vitro (Fig. ('PHD2', 'Gene', (132, 136)) ('M535I', 'Mutation', 'p.M535I', (13, 18)) ('PHD2', 'Gene', '54583', (132, 136)) ('M535I', 'Var', (13, 18)) 26733 30135421 Next, we co-transfected HEK293a cells with 3xFLAG-HIF-2alpha ODD and HA-PHD2 constructs. ('3xFLAG-HIF-2alpha', 'Var', (43, 60)) ('PHD2', 'Gene', '54583', (72, 76)) ('PHD2', 'Gene', (72, 76)) ('HEK293a', 'CellLine', 'CVCL:0045', (24, 31)) 26734 30135421 Immunoprecipitation of 3xFLAG revealed that all HIF-2alpha mutant ODD constructs bound less PHD2 than WT HIF-2alpha ODD (Supplementary Figure 6b). ('bound', 'Interaction', (81, 86)) ('WT HIF-2alpha ODD', 'Disease', 'MESH:C563160', (102, 119)) ('PHD2', 'Gene', '54583', (92, 96)) ('mutant', 'Var', (59, 65)) ('PHD2', 'Gene', (92, 96)) ('HIF-2alpha', 'Gene', (48, 58)) ('less', 'NegReg', (87, 91)) ('WT HIF-2alpha ODD', 'Disease', (102, 119)) 26735 30135421 The increased binding of the M535I mutant to PHD2 was not observed in this experiment. ('PHD2', 'Gene', (45, 49)) ('M535I', 'Mutation', 'p.M535I', (29, 34)) ('PHD2', 'Gene', '54583', (45, 49)) ('M535I', 'Var', (29, 34)) 26736 30135421 Thus, the residual PHD2 binding observed among HIF-2alpha mutants may partially be driven by the P405 site, which may mask differential PHD2 binding among the HIF-2alpha mutant ODD constructs. ('P405', 'Var', (97, 101)) ('PHD2', 'Gene', '54583', (19, 23)) ('mask', 'NegReg', (118, 122)) ('PHD2', 'Gene', (19, 23)) ('binding', 'Interaction', (24, 31)) ('binding', 'Interaction', (141, 148)) ('PHD2', 'Gene', '54583', (136, 140)) ('driven by', 'Reg', (83, 92)) ('HIF-2alpha', 'Gene', (47, 57)) ('PHD2', 'Gene', (136, 140)) ('mutants', 'Var', (58, 65)) 26737 30135421 To further evaluate the negative effect of HIF-2alpha mutations on pVHL affinity, we transiently expressed full-length HIF-2alpha (WT and representative class 1 and class 2 mutants) in combination with FLAG-pVHL in human embryonic kidney epithelial HEK293a cells that express endogenous PHD2. ('embryonic kidney epithelial', 'Disease', 'MESH:D007674', (221, 248)) ('mutations', 'Var', (54, 63)) ('PHD2', 'Gene', (287, 291)) ('pVHL', 'Gene', (207, 211)) ('PHD2', 'Gene', '54583', (287, 291)) ('pVHL', 'Gene', '7428', (207, 211)) ('HEK293a', 'CellLine', 'CVCL:0045', (249, 256)) ('pVHL', 'Gene', '7428', (67, 71)) ('HIF-2alpha', 'Gene', (119, 129)) ('pVHL', 'Gene', (67, 71)) ('embryonic kidney epithelial', 'Disease', (221, 248)) ('human', 'Species', '9606', (215, 220)) 26738 30135421 We observed that under this experimental condition, class 1 mutants bound lower levels of pVHL than class 2 mutants (Fig. ('levels', 'MPA', (80, 86)) ('pVHL', 'Gene', '7428', (90, 94)) ('pVHL', 'Gene', (90, 94)) ('mutants', 'Var', (60, 67)) ('lower', 'NegReg', (74, 79)) 26739 30135421 Notably, A530V class 1 mutant bound poorly to pVHL in our cellular system, which corroborated our earlier in vitro binding assay following in vitro PHD2-mediated hydroxylation (Fig. ('poorly', 'NegReg', (36, 42)) ('pVHL', 'Gene', '7428', (46, 50)) ('A530V', 'Mutation', 'p.A530V', (9, 14)) ('pVHL', 'Gene', (46, 50)) ('A530V', 'Var', (9, 14)) ('PHD2', 'Gene', '54583', (148, 152)) ('bound', 'Interaction', (30, 35)) ('PHD2', 'Gene', (148, 152)) 26740 30135421 These results collectively support the notion that the observed differential impact on hydroxylation via PHD2 and/or binding affinity to pVHL by class 1 versus class 2 HIF-2alpha mutations underlies the emerging genotype-phenotype relationships seen in patients. ('PHD2', 'Gene', '54583', (105, 109)) ('hydroxylation', 'MPA', (87, 100)) ('PHD2', 'Gene', (105, 109)) ('binding', 'Interaction', (117, 124)) ('HIF-2alpha', 'Gene', (168, 178)) ('patients', 'Species', '9606', (253, 261)) ('mutations', 'Var', (179, 188)) ('pVHL', 'Gene', (137, 141)) ('pVHL', 'Gene', '7428', (137, 141)) 26741 30135421 Loss-of-function mutations in VHL, which encodes the tumor suppressor pVHL, cause VHL disease, an autosomal dominant cancer disorder with predisposition to central nervous system hemangioblastoma, PPGL, and clear cell renal cell carcinoma (ccRCC) as well as polycythemia, and the majority of sporadic cases of hemangioblastoma and ccRCC. ('central nervous system hemangioblastoma', 'Phenotype', 'HP:0006880', (156, 195)) ('autosomal dominant cancer disorder', 'Disease', 'MESH:D001859', (98, 132)) ('clear cell renal cell carcinoma', 'Disease', 'MESH:C538614', (207, 238)) ('tumor', 'Disease', 'MESH:D009369', (53, 58)) ('VHL', 'Gene', (30, 33)) ('ccRCC', 'Phenotype', 'HP:0006770', (240, 245)) ('VHL', 'Gene', '7428', (71, 74)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (310, 326)) ('mutations', 'Var', (17, 26)) ('autosomal dominant cancer disorder', 'Disease', (98, 132)) ('pVHL', 'Gene', '7428', (70, 74)) ('clear cell renal cell carcinoma', 'Disease', (207, 238)) ('pVHL', 'Gene', (70, 74)) ('carcinoma', 'Phenotype', 'HP:0030731', (229, 238)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('polycythemia', 'Disease', (258, 270)) ('VHL', 'Gene', '7428', (30, 33)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (218, 238)) ('ccRCC', 'Disease', (331, 336)) ('polycythemia', 'Disease', 'MESH:D011086', (258, 270)) ('cancer', 'Phenotype', 'HP:0002664', (117, 123)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (179, 195)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (310, 326)) ('hemangioblastoma', 'Disease', (310, 326)) ('VHL disease', 'Disease', 'MESH:D006623', (82, 93)) ('VHL', 'Gene', (82, 85)) ('clear cell renal cell carcinoma', 'Phenotype', 'HP:0006770', (207, 238)) ('ccRCC', 'Phenotype', 'HP:0006770', (331, 336)) ('central nervous system hemangioblastoma', 'Disease', (156, 195)) ('VHL disease', 'Disease', (82, 93)) ('Loss-of-function', 'NegReg', (0, 16)) ('VHL', 'Gene', (71, 74)) ('central nervous system hemangioblastoma', 'Disease', 'MESH:D018325', (156, 195)) ('VHL', 'Gene', '7428', (82, 85)) ('tumor', 'Disease', (53, 58)) ('hemangioblastoma', 'Disease', (179, 195)) ('polycythemia', 'Phenotype', 'HP:0001901', (258, 270)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (179, 195)) 26742 30135421 These diseases are thought to be driven, in part or wholly, by deregulation of HIF-alpha, the best characterized target of pVHL-mediated negative regulation. ('HIF-alpha', 'Protein', (79, 88)) ('deregulation', 'Var', (63, 75)) ('pVHL', 'Gene', '7428', (123, 127)) ('pVHL', 'Gene', (123, 127)) 26743 30135421 Concordantly, it is now known that mutations in EPAS1, which encodes HIF-2alpha, also cause polycythemia, PPGL, and somatostatinoma. ('polycythemia', 'Disease', (92, 104)) ('PPGL', 'Disease', (106, 110)) ('polycythemia', 'Phenotype', 'HP:0001901', (92, 104)) ('EPAS1', 'Gene', '2034', (48, 53)) ('EPAS1', 'Gene', (48, 53)) ('somatostatinoma', 'Disease', 'MESH:D013005', (116, 131)) ('cause', 'Reg', (86, 91)) ('polycythemia', 'Disease', 'MESH:D011086', (92, 104)) ('somatostatinoma', 'Disease', (116, 131)) ('mutations', 'Var', (35, 44)) 26744 30135421 Upon analyzing every reported case (66 as of 1 January 2018) of EPAS1 mutations in the aforementioned diseases, we propose the following classification system for HIF-2alpha-driven disease with class 1 disease featuring PPGL, which is subcategorized into class 1a featuring PPGL with somatostatinoma and polycythemia, class 1b featuring PPGL and polycythemia (classes 1a and 1b are also jointly known as Pacak-Zhuang syndrome), and class 1c featuring only PPGL. ('polycythemia', 'Disease', (304, 316)) ('EPAS1', 'Gene', '2034', (64, 69)) ('mutations', 'Var', (70, 79)) ('somatostatinoma and polycythemia', 'Disease', 'MESH:D013005', (284, 316)) ('polycythemia', 'Disease', (346, 358)) ('EPAS1', 'Gene', (64, 69)) ('polycythemia', 'Phenotype', 'HP:0001901', (304, 316)) ('polycythemia', 'Disease', 'MESH:D011086', (304, 316)) ('polycythemia', 'Phenotype', 'HP:0001901', (346, 358)) ('polycythemia', 'Disease', 'MESH:D011086', (346, 358)) 26747 30135421 Of the five individuals, four were found to have somatic EPAS1 mutations, all of which resulted in mutation of either amino acid residue A530 or P531 (P531S (x2), P531R, A530P). ('mutations', 'Var', (63, 72)) ('EPAS1', 'Gene', (57, 62)) ('P531', 'Var', (145, 149)) ('P531R', 'Mutation', 'p.P531R', (163, 168)) ('P531S', 'Mutation', 'p.P531S', (151, 156)) ('A530P', 'Var', (170, 175)) ('mutation', 'Var', (99, 107)) ('A530P', 'Mutation', 'p.A530P', (170, 175)) ('resulted in', 'Reg', (87, 98)) ('P531R', 'Var', (163, 168)) ('EPAS1', 'Gene', '2034', (57, 62)) 26748 30135421 Thus, continued study of patients with PPGL affirms the emergence of EPAS1 mutations as a major driver of neuroendocrine tumor pathogenesis and solidifies the importance of systemic hypoxia or pseudohypoxia in PPGL tumorigenesis. ('tumor', 'Phenotype', 'HP:0002664', (215, 220)) ('tumor', 'Disease', (121, 126)) ('EPAS1', 'Gene', '2034', (69, 74)) ('hypoxia', 'Disease', (199, 206)) ('hypoxia', 'Disease', (182, 189)) ('neuroendocrine tumor', 'Disease', (106, 126)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (106, 126)) ('tumor', 'Disease', 'MESH:D009369', (121, 126)) ('hypoxia', 'Disease', 'MESH:D000860', (199, 206)) ('hypoxia', 'Disease', 'MESH:D000860', (182, 189)) ('patients', 'Species', '9606', (25, 33)) ('tumor', 'Disease', (215, 220)) ('neuroendocrine tumor', 'Disease', 'MESH:D018358', (106, 126)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('tumor', 'Disease', 'MESH:D009369', (215, 220)) ('pseudohypoxia', 'Disease', (193, 206)) ('pseudohypoxia', 'Disease', 'None', (193, 206)) ('EPAS1', 'Gene', (69, 74)) ('mutations', 'Var', (75, 84)) 26749 30135421 Co-crystal structure of hydroxylated HIF-2alpha peptide encompassing residues 523-541, which cover over 90% of bona fide disease-causing EPAS1 mutations identified to date, bound to VBC complex revealed that class 1 mutations affect residues contacting pVHL while the vast majority of reported class 2 mutations are localized to a non-contacting kink region (residues 535-538; Fig. ('peptide', 'Chemical', 'MESH:D010455', (48, 55)) ('EPAS1', 'Gene', '2034', (137, 142)) ('EPAS1', 'Gene', (137, 142)) ('pVHL', 'Gene', '7428', (253, 257)) ('affect', 'Reg', (226, 232)) ('VBC', 'Chemical', '-', (182, 185)) ('pVHL', 'Gene', (253, 257)) ('mutations', 'Var', (216, 225)) ('mutations', 'Var', (143, 152)) 26751 30135421 When considering both the kink region and the mobile C-terminal region, almost 90% of class 2 mutations affect residues predicted to contribute marginally to pVHL-HIF-2alpha interface stability. ('affect', 'Reg', (104, 110)) ('pVHL', 'Gene', (158, 162)) ('mutations', 'Var', (94, 103)) ('class 2', 'Gene', (86, 93)) ('residues', 'Protein', (111, 119)) ('pVHL', 'Gene', '7428', (158, 162)) 26752 30135421 Conversely, over 80% of class 1 mutations affect residues that make substantial contact with pVHL (i.e. ('affect', 'Reg', (42, 48)) ('pVHL', 'Gene', '7428', (93, 97)) ('pVHL', 'Gene', (93, 97)) ('class 1', 'Gene', (24, 31)) ('mutations', 'Var', (32, 41)) ('residues', 'Protein', (49, 57)) ('contact', 'Interaction', (80, 87)) 26753 30135421 In keeping with these structural data-based predictions, we found that the HIF-2alpha peptides with the lowest affinity for pVHL are indeed class 1 mutants (L529P, A530T, P531A, Y532C; Fig. ('Y532C', 'Var', (178, 183)) ('A530T', 'Var', (164, 169)) ('P531A', 'Mutation', 'p.P531A', (171, 176)) ('L529P', 'Var', (157, 162)) ('A530T', 'Mutation', 'c.530A>T', (164, 169)) ('P531A', 'Var', (171, 176)) ('Y532C', 'Mutation', 'p.Y532C', (178, 183)) ('pVHL', 'Gene', '7428', (124, 128)) ('pVHL', 'Gene', (124, 128)) ('peptide', 'Chemical', 'MESH:D010455', (86, 93)) ('L529P', 'Mutation', 'p.L529P', (157, 162)) 26754 30135421 Interestingly, the trend of greater loss of pVHL affinity associated with class 1 mutants was apparent when conducting kinetic binding experiments with purified VBC (Fig. ('loss', 'NegReg', (36, 40)) ('pVHL', 'Gene', '7428', (44, 48)) ('pVHL', 'Gene', (44, 48)) ('VBC', 'Chemical', '-', (161, 164)) ('mutants', 'Var', (82, 89)) 26756 30135421 In light of the BLI-measured dissociation constants (Kd) for WT and mutant HIF-2alphaOH peptides (200-500 nM; Table 2), it is clear that the minimum concentrations required to obtain a detectable signal during an ELISA experiment (575 nM) are saturating. ('HIF-2alphaOH', 'Gene', (75, 87)) ('peptide', 'Chemical', 'MESH:D010455', (88, 95)) ('mutant', 'Var', (68, 74)) 26757 30135421 As previously mentioned, prior attempts to characterize class 2 mutants by ELISA failed to identify any change in VBC affinity, when compared to WT HIF-2alphaOH peptide. ('VBC', 'Protein', (114, 117)) ('peptide', 'Chemical', 'MESH:D010455', (161, 168)) ('mutants', 'Var', (64, 71)) ('VBC', 'Chemical', '-', (114, 117)) 26758 30135421 Although the majority of class 2 mutations are localized to the non-contacting kink region or flexible C-terminal region, mutations of I533 and P534 are also reported to cause polycythemia in the absence of neuroendocrine tumor development (Fig. ('polycythemia in the absence of neuroendocrine tumor', 'Disease', 'MESH:D018358', (176, 227)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (207, 227)) ('P534', 'Gene', (144, 148)) ('mutations', 'Var', (122, 131)) ('tumor', 'Phenotype', 'HP:0002664', (222, 227)) ('cause', 'Reg', (170, 175)) ('I533', 'Gene', (135, 139)) ('polycythemia', 'Phenotype', 'HP:0001901', (176, 188)) 26759 30135421 These residues are proximal to Hyp531, make contacts with pVHL, and are predicted to contribute to the stability of the pVHL-HIF-2alpha interface. ('Hyp531', 'Var', (31, 37)) ('pVHL', 'Gene', '7428', (58, 62)) ('pVHL', 'Gene', (58, 62)) ('stability', 'MPA', (103, 112)) ('contribute', 'Reg', (85, 95)) ('contacts', 'Interaction', (44, 52)) ('pVHL', 'Gene', '7428', (120, 124)) ('pVHL', 'Gene', (120, 124)) 26760 30135421 In particular, I533 binds pVHL more deeply than any other residue, aside from Hyp531 (Supplementary Figure 3, 7). ('binds', 'Interaction', (20, 25)) ('deeply', 'Interaction', (36, 42)) ('pVHL', 'Gene', '7428', (26, 30)) ('pVHL', 'Gene', (26, 30)) ('I533', 'Var', (15, 19)) 26761 30135421 However, the disease-causing mutations affecting these residues, I533V and P534L, are conserved mutations that can be accommodated at the pVHL-HIF-2alpha interface without introducing steric clash and with the loss of only minimal van der Waal interactions, which likely explains why these mutations are associated with class 2 disease phenotype despite affecting residues that make significant contact with pVHL. ('pVHL', 'Gene', '7428', (408, 412)) ('pVHL', 'Gene', '7428', (138, 142)) ('class 2 disease', 'Disease', (320, 335)) ('P534L', 'Mutation', 'p.P534L', (75, 80)) ('I533V', 'Mutation', 'p.I533V', (65, 70)) ('pVHL', 'Gene', (408, 412)) ('pVHL', 'Gene', (138, 142)) ('disease-causing', 'Reg', (13, 28)) ('I533V', 'Var', (65, 70)) ('associated', 'Reg', (304, 314)) ('P534L', 'Var', (75, 80)) ('affecting', 'Reg', (354, 363)) 26762 30135421 As a corollary, a prediction is that a bulky substitution at either of these sites, such as an I533F (C.1597 A > T) or P534R (C.1601C > G) missense mutation, would introduce steric clash that would destabilize the HIF-2alpha-pVHL binding interface. ('I533F', 'Mutation', 'p.I533F', (95, 100)) ('P534R', 'Mutation', 'p.P534R', (119, 124)) ('destabilize', 'NegReg', (198, 209)) ('I533F (C.1597 A > T', 'Var', (95, 114)) ('C.1601C > G', 'Mutation', 'c..1601C,C>G', (126, 137)) ('pVHL', 'Gene', '7428', (225, 229)) ('C.1597 A > T', 'Mutation', 'c..1597C,A>T', (102, 114)) ('introduce', 'Reg', (164, 173)) ('steric clash', 'MPA', (174, 186)) ('pVHL', 'Gene', (225, 229)) ('P534R (C.1601C > G', 'Var', (119, 137)) 26763 30135421 Although not yet reported in literature, any patient confirmed to carry these de novo mutations should be monitored for neuroendocrine tumors, as they would be predicted to have or develop class 1 disease. ('mutations', 'Var', (86, 95)) ('develop', 'PosReg', (181, 188)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (120, 141)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (120, 141)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('neuroendocrine tumors', 'Disease', (120, 141)) ('class 1 disease', 'Disease', (189, 204)) ('patient', 'Species', '9606', (45, 52)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (120, 140)) 26767 30135421 An intriguing speculation, therefore, is that class 2 mutations do not result in sufficient HIF-2alpha activation to overcome repression of HIF-2alpha during embryogenesis, while class 1 mutations result in sufficient HIF-2alpha activation via attenuation of pVHL-mediated degradation to transactivate HIF-2alpha targets, such as Oct4, necessary for PPGL pathogenesis. ('Oct4', 'Gene', (330, 334)) ('mutations', 'Var', (54, 63)) ('activation', 'PosReg', (229, 239)) ('mutations', 'Var', (187, 196)) ('pVHL', 'Gene', (259, 263)) ('pVHL', 'Gene', '7428', (259, 263)) ('Oct4', 'Gene', '5460', (330, 334)) ('HIF-2alpha', 'MPA', (218, 228)) ('transactivate', 'PosReg', (288, 301)) ('attenuation', 'NegReg', (244, 255)) 26768 30135421 Concordantly, a subset of class 1 mutations likely occur during embryogenesis despite being sporadic in nature, due to the presence of multiple neuroendocrine tumors of distinct cellular lineages (PPGL, somatostatinoma) and congenital polycythemia in patients with class 1a and class 1b diseases (Table 1). ('somatostatinoma', 'Disease', (203, 218)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (144, 164)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (144, 165)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (144, 165)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('polycythemia', 'Phenotype', 'HP:0001901', (235, 247)) ('congenital polycythemia', 'Disease', 'MESH:D011086', (224, 247)) ('tumors', 'Phenotype', 'HP:0002664', (159, 165)) ('patients', 'Species', '9606', (251, 259)) ('neuroendocrine tumors', 'Disease', (144, 165)) ('congenital polycythemia', 'Disease', (224, 247)) ('somatostatinoma', 'Disease', 'MESH:D013005', (203, 218)) ('class 1', 'Gene', (26, 33)) ('mutations', 'Var', (34, 43)) 26769 30135421 Moreover, some patients present with HIF-2alpha mutations in tissues not affected by disease at detectable but non-heterozygous (i.e. ('patients', 'Species', '9606', (15, 23)) ('HIF-2alpha', 'Gene', (37, 47)) ('mutations', 'Var', (48, 57)) 26770 30135421 Our hypothesis is consistent with the observation that VHL mutations that specifically cause pheochromocytoma appear to disrupt neuronal culling during embryogenesis via dysregulation of atypical protein kinase C in a HIF-independent process. ('disrupt', 'NegReg', (120, 127)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('dysregulation', 'MPA', (170, 183)) ('atypical protein kinase C', 'Enzyme', (187, 212)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (93, 109)) ('cause', 'Reg', (87, 92)) ('mutations', 'Var', (59, 68)) ('VHL', 'Gene', (55, 58)) ('VHL', 'Gene', '7428', (55, 58)) ('neuronal culling', 'CPA', (128, 144)) ('pheochromocytoma', 'Disease', (93, 109)) 26775 30135421 Here, we reveal the molecular basis underlying the broad class segregation emerging in HIF-2alpha-driven disease in which EPAS1 mutations that cause significant disturbance to the HIF-2alpha-pVHL interaction interface are associated with class 1 disease while those causing a mild disturbance are associated with class 2 disease. ('disturbance', 'MPA', (161, 172)) ('EPAS1', 'Gene', '2034', (122, 127)) ('associated with', 'Reg', (222, 237)) ('EPAS1', 'Gene', (122, 127)) ('mutations', 'Var', (128, 137)) ('pVHL', 'Gene', '7428', (191, 195)) ('pVHL', 'Gene', (191, 195)) ('class 1 disease', 'Disease', (238, 253)) 26777 30135421 Notably, the structure-guided information presented here would be powerful in predicting the broad class phenotype of de novo EPAS1 mutations in patients. ('patients', 'Species', '9606', (145, 153)) ('EPAS1', 'Gene', (126, 131)) ('EPAS1', 'Gene', '2034', (126, 131)) ('mutations', 'Var', (132, 141)) 26778 30135421 Missense mutations of EPAS1 (UniProt ascension number: Q99814; Genbank transcript ID: NM_001430; Protein Ensembl ENSP ID: ENSP00000263734) identified in patients with disease were analyzed using the Polyphen-2, SIFT, MutationTaster2, and PROVEAN prediction software. ('EPAS1', 'Gene', (22, 27)) ('patients', 'Species', '9606', (153, 161)) ('SIFT', 'Disease', (211, 215)) ('EPAS1', 'Gene', '2034', (22, 27)) ('SIFT', 'Disease', 'None', (211, 215)) ('Missense mutations', 'Var', (0, 18)) 26787 30135421 Anti-tubulin (T5168; 1:5000 western blot), anti-vinculin (V9264, 1:10,000 dilution western blot) and anti-FLAG (F1804; 1:5000 dilution western blot; 1:1000 dilution immunoprecipitation) were obtained from Sigma-Aldrich. ('vinculin', 'Gene', '7414', (48, 56)) ('vinculin', 'Gene', (48, 56)) ('V9264', 'CellLine', 'CVCL:U048', (58, 63)) ('T5168', 'Var', (14, 19)) 26790 30135421 For hydroxylation assays, or studies involving the L542P mutant, the following WT HIF-2alpha peptide, containing amino acid residues 523-542, was used: ELDLETLA[Hyp/P]YIPMDGEDFQL. ('L542P', 'Var', (51, 56)) ('L542P', 'Mutation', 'p.L542P', (51, 56)) ('hydroxylation', 'MPA', (4, 17)) ('peptide', 'Chemical', 'MESH:D010455', (93, 100)) 26811 30135421 Residues 523-526 and 541 of the HIF-2alpha peptide are disordered and not modeled, while the sidechain of D539 is disordered and built as a Cbeta stub. ('D539', 'Var', (106, 110)) ('disordered', 'Disease', (55, 65)) ('disordered', 'Disease', (114, 124)) ('peptide', 'Chemical', 'MESH:D010455', (43, 50)) ('disordered', 'Disease', 'MESH:D030342', (55, 65)) ('disordered', 'Disease', 'MESH:D030342', (114, 124)) 26824 30135421 L1170) and incubated with 2 mug of biotinylated HIF-2alphaOH peptide (WT or mutant), immobilized on streptavidin agarose beads, in either 500 muL of EBC buffer (50 mM Tris-HCl pH 8.0, 120 mM NaCl, 0.5% (v/v) NP-40; stringent buffer conditions) or buffer A supplemented with 0.02% (v/v) Tween-20 (mild buffer conditions) for 2 h at 4 C. Following incubation, beads were either washed 5x with NETN buffer (20 mM Tris-HCl pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5% (v/v) NP-40; stringent) or buffer A supplemented with 0.1% (v/v) Tween-20 (mild). ('NETN buffer', 'Chemical', '-', (392, 403)) ('agarose', 'Chemical', 'MESH:D012685', (113, 120)) ('NaCl', 'Chemical', 'MESH:D012965', (435, 439)) ('mutant', 'Var', (76, 82)) ('Tween-20', 'Chemical', 'MESH:D011136', (522, 530)) ('EBC', 'Chemical', '-', (149, 152)) ('Tween-20', 'Chemical', 'MESH:D011136', (286, 294)) ('peptide', 'Chemical', 'MESH:D010455', (61, 68)) ('NaCl', 'Chemical', 'MESH:D012965', (191, 195)) ('Tris-HCl', 'Chemical', '-', (167, 175)) ('Tris-HCl', 'Chemical', '-', (411, 419)) ('HIF-2alphaOH', 'Gene', (48, 60)) 26827 30135421 5 mug of biotinylated HIF-2alpha peptide (WT or mutant) was immobilized on streptavidin agarose beads and incubated with a 50 mug/muL solution of purified HIS6-PHD2 (181-426) in 50 mM Tris-HCl pH 7.5, 0.005% (v/v) Tween-20 buffer supplemented with or without 1 mM MnCl2 and 1 mM NOG, for 2 h at 4 C. Beads were washed 2x with the same buffer. ('PHD2', 'Gene', (160, 164)) ('PHD2', 'Gene', '54583', (160, 164)) ('mutant', 'Var', (48, 54)) ('agarose', 'Chemical', 'MESH:D012685', (88, 95)) ('peptide', 'Chemical', 'MESH:D010455', (33, 40)) ('Tris-HCl', 'Chemical', '-', (184, 192)) ('HIF-2alpha', 'Gene', (22, 32)) ('Tween-20', 'Chemical', 'MESH:D011136', (214, 222)) ('NOG', 'Chemical', 'MESH:C040947', (279, 282)) ('MnCl2', 'Chemical', 'MESH:C025340', (264, 269)) 26832 30135421 Following hydroxylation, beads were washed 5x with EBC buffer and peptides were incubated with IVTT HA-VHL30 under the stringent buffer conditions described above. ('VHL', 'Gene', '7428', (103, 106)) ('EBC', 'Chemical', '-', (51, 54)) ('hydroxylation', 'Var', (10, 23)) ('peptide', 'Chemical', 'MESH:D010455', (66, 73)) ('VHL', 'Gene', (103, 106)) 26901 29922019 As we continue to improve long-term survival for single-ventricle patients, attention has shifted to long-term morbidities. ('improve', 'PosReg', (18, 25)) ('single-ventricle', 'Phenotype', 'HP:0001750', (49, 65)) ('patients', 'Species', '9606', (66, 74)) ('single-ventricle', 'Var', (49, 65)) 26913 27742784 The discovery of the genetic mutations causing the MEN1 and MEN2 syndromes has clarified much about the molecular biology of the syndromes and their component tumors, and in many cases has led to improved methods of diagnosis and treatment. ('MEN1', 'Gene', (51, 55)) ('MEN1', 'Gene', '4221', (51, 55)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('mutations', 'Var', (29, 38)) ('tumors', 'Phenotype', 'HP:0002664', (159, 165)) ('component tumors', 'Disease', (149, 165)) ('MEN', 'Species', '9606', (51, 54)) ('MEN2 syndromes', 'Disease', (60, 74)) ('component tumors', 'Disease', 'MESH:D009369', (149, 165)) ('MEN', 'Species', '9606', (60, 63)) 26940 27742784 The Cancer Genome Atlas study of ACC confirmed and expanded the Weiss classification by integrating tumor subsets identified across the DNA copy-number and mutations, DNA-methylation, mRNA-expression, and miRNA-expression platforms. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('mutations', 'Var', (156, 165)) ('tumor', 'Disease', (100, 105)) ('Cancer', 'Phenotype', 'HP:0002664', (4, 10)) ('tumor', 'Disease', 'MESH:D009369', (100, 105)) 26955 27742784 Interestingly, the partial responses only occurred in patients with SDHB mutations. ('patients', 'Species', '9606', (54, 62)) ('SDHB', 'Gene', (68, 72)) ('mutations', 'Var', (73, 82)) ('SDHB', 'Gene', '6390', (68, 72)) 26957 27742784 Most patients who had a clinical benefit carried the SDHB mutation. ('mutation', 'Var', (58, 66)) ('patients', 'Species', '9606', (5, 13)) ('SDHB', 'Gene', '6390', (53, 57)) ('SDHB', 'Gene', (53, 57)) 26960 27742784 In 65% of pheochromocyctomas, mutations have been discovered in 19 mutually exclusive susceptibility genes. ('pheochromocyctomas', 'Disease', 'None', (10, 28)) ('pheochromocyctomas', 'Disease', (10, 28)) ('mutations', 'Var', (30, 39)) 26963 27742784 Pheochromocytomas can be divided into 3 clusters, depending on whether they have mutations in genes that alter proteins constituting the Krebs cycle (SDHA, SDHB, SDHC, SDHD, SDHAF2, MDH2, and FH), in genes associated with the hypoxic response (VHL and EPAS1), or in genes linked to signaling in the RAS/RAF, MAPK or mTOR pathways. ('EPAS1', 'Gene', (252, 257)) ('RAF', 'Gene', '22882', (303, 306)) ('FH', 'Gene', (192, 194)) ('mTOR', 'Gene', '2475', (316, 320)) ('MDH2', 'Gene', (182, 186)) ('mutations', 'Var', (81, 90)) ('SDHD', 'Gene', '6392', (168, 172)) ('SDHB', 'Gene', '6390', (156, 160)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (0, 17)) ('alter', 'Reg', (105, 110)) ('RAF', 'Gene', (303, 306)) ('VHL', 'Disease', 'MESH:D006623', (244, 247)) ('SDHC', 'Gene', (162, 166)) ('SDHD', 'Gene', (168, 172)) ('SDHAF2', 'Gene', '54949', (174, 180)) ('SDHAF2', 'Gene', (174, 180)) ('EPAS1', 'Gene', '2034', (252, 257)) ('SDHA', 'Gene', (174, 178)) ('SDHA', 'Gene', (150, 154)) ('SDHB', 'Gene', (156, 160)) ('MDH2', 'Gene', '4191', (182, 186)) ('Krebs', 'Chemical', '-', (137, 142)) ('Pheochromocytomas', 'Disease', (0, 17)) ('SDHA', 'Gene', '6389', (150, 154)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('SDHA', 'Gene', '6389', (174, 178)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('mTOR', 'Gene', (316, 320)) ('proteins', 'Protein', (111, 119)) ('VHL', 'Disease', (244, 247)) ('SDHC', 'Gene', '6391', (162, 166)) 26965 27742784 Pheochromocytoma was the first human tumor shown to be caused by a germline mutation of SDHD, a gene that encodes a metabolic enzyme, and also the first human tumor shown to have activating mutations in HIF2A. ('Pheochromocytoma', 'Disease', (0, 16)) ('caused by', 'Reg', (55, 64)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('tumor', 'Disease', 'MESH:D009369', (37, 42)) ('HIF2A', 'Gene', '2034', (203, 208)) ('SDHD', 'Gene', (88, 92)) ('SDHD', 'Gene', '6392', (88, 92)) ('mutation', 'Var', (76, 84)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('human', 'Species', '9606', (31, 36)) ('tumor', 'Disease', (159, 164)) ('tumor', 'Disease', (37, 42)) ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('human', 'Species', '9606', (153, 158)) ('HIF2A', 'Gene', (203, 208)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('tumor', 'Disease', 'MESH:D009369', (159, 164)) 26978 27742784 Prior work demonstrated mutually exclusive clonal mutations in papillary thyroid carcinoma (BRAF; 60%, RAS; 15%, and chromosomal rearrangements involving RET, and NTRK1; 5 to 40%), follicular thyroid carcinoma (RAS; 40 to 55%, and rearranged PPARG1; 25 to 60%), poorly differentiated thyroid carcinoma (BRAF; 0 to 13%, RAS; 20 to 30%, CTNNB1; 0 to 5%, and TP53; 17 to 40%), and anaplastic thyroid carcinoma (BRAF; 10 to 35%, RAS; 20 to 60%, CTNNB1; 66%, and TP53; 67 to 90%). ('TP53', 'Gene', (356, 360)) ('RET', 'Gene', (154, 157)) ('NTRK1', 'Gene', '4914', (163, 168)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (389, 406)) ('carcinoma', 'Phenotype', 'HP:0030731', (200, 209)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (284, 301)) ('NTRK1', 'Gene', (163, 168)) ('PPARG1', 'Gene', (242, 248)) ('carcinoma', 'Phenotype', 'HP:0030731', (81, 90)) ('CTNNB1', 'Gene', '1499', (335, 341)) ('TP53', 'Gene', (458, 462)) ('anaplastic thyroid carcinoma', 'Disease', (378, 406)) ('CTNNB1', 'Gene', (441, 447)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (192, 209)) ('papillary thyroid carcinoma', 'Phenotype', 'HP:0002895', (63, 90)) ('rearranged', 'Var', (231, 241)) ('carcinoma', 'Phenotype', 'HP:0030731', (397, 406)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (73, 90)) ('papillary thyroid carcinoma', 'Disease', (63, 90)) ('carcinoma', 'Phenotype', 'HP:0030731', (292, 301)) ('TP53', 'Gene', '7157', (356, 360)) ('papillary thyroid carcinoma', 'Disease', 'MESH:D000077273', (63, 90)) ('BRAF', 'Gene', '673', (92, 96)) ('PPARG1', 'Gene', '5468', (242, 248)) ('CTNNB1', 'Gene', (335, 341)) ('BRAF', 'Gene', (92, 96)) ('TP53', 'Gene', '7157', (458, 462)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (192, 209)) ('follicular thyroid carcinoma', 'Phenotype', 'HP:0006731', (181, 209)) ('RET', 'Gene', '5979', (154, 157)) ('anaplastic thyroid carcinoma', 'Disease', 'MESH:D065646', (378, 406)) ('anaplastic thyroid carcinoma', 'Phenotype', 'HP:0011779', (378, 406)) ('follicular thyroid carcinoma', 'Disease', 'MESH:D018263', (181, 209)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (389, 406)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (284, 301)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (73, 90)) ('mutations', 'Var', (50, 59)) ('thyroid carcinoma', 'Disease', (284, 301)) ('CTNNB1', 'Gene', '1499', (441, 447)) ('follicular thyroid carcinoma', 'Disease', (181, 209)) ('BRAF', 'Gene', '673', (408, 412)) ('BRAF', 'Gene', '673', (303, 307)) ('BRAF', 'Gene', (408, 412)) ('BRAF', 'Gene', (303, 307)) 26979 27742784 A recent Cancer Genome Atlas study of 496 papillary thyroid carcinomas identified new mutations in EIFIAX, PPM1D, CHEK2 genes, and novel chromosomal rearrangements of BRAF, RET, NTRK, and ALK, thereby reducing the number of unknown driver mutations from 25% to 3.5%. ('EIFIAX', 'Gene', (99, 105)) ('ALK', 'Gene', (188, 191)) ('BRAF', 'Gene', (167, 171)) ('BRAF', 'Gene', '673', (167, 171)) ('NTRK', 'Gene', (178, 182)) ('Cancer', 'Phenotype', 'HP:0002664', (9, 15)) ('RET', 'Gene', '5979', (173, 176)) ('CHEK2', 'Gene', (114, 119)) ('mutations', 'Var', (86, 95)) ('papillary thyroid carcinomas', 'Disease', (42, 70)) ('papillary thyroid carcinomas', 'Phenotype', 'HP:0002895', (42, 70)) ('PPM1D', 'Gene', '8493', (107, 112)) ('NTRK', 'Gene', '4914;4916', (178, 182)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (52, 69)) ('CHEK2', 'Gene', '11200', (114, 119)) ('thyroid carcinomas', 'Phenotype', 'HP:0002890', (52, 70)) ('RET', 'Gene', (173, 176)) ('papillary thyroid carcinoma', 'Phenotype', 'HP:0002895', (42, 69)) ('papillary thyroid carcinomas', 'Disease', 'MESH:D000077273', (42, 70)) ('PPM1D', 'Gene', (107, 112)) ('carcinoma', 'Phenotype', 'HP:0030731', (60, 69)) ('carcinomas', 'Phenotype', 'HP:0030731', (60, 70)) ('ALK', 'Gene', '238', (188, 191)) 26980 27742784 The Cancer Genome Atlas study investigators were able to divide papillary thyroid carcinomas into 3 molecular subtypes with mutually exclusive mutations and variable degrees of differentiation: (1) recurrent mutations in genes; the most prominent being BRAF (59.7%), NRAS and HRAS, (14.0, (2) gene fusions of BRAF, RET, PPARG, NTRK1, NTRK3, ALK, LTK, MET, FGFR2, and THDA (15.3%), and (3) somatic copy number alterations. ('papillary thyroid carcinomas', 'Disease', 'MESH:D000077273', (64, 92)) ('NTRK3', 'Gene', '4916', (334, 339)) ('gene fusions', 'Var', (293, 305)) ('THDA', 'Chemical', '-', (367, 371)) ('thyroid carcinomas', 'Phenotype', 'HP:0002890', (74, 92)) ('mutations', 'Var', (208, 217)) ('NTRK3', 'Gene', (334, 339)) ('MET', 'Gene', (351, 354)) ('Cancer', 'Phenotype', 'HP:0002664', (4, 10)) ('BRAF', 'Gene', '673', (309, 313)) ('BRAF', 'Gene', (309, 313)) ('carcinomas', 'Phenotype', 'HP:0030731', (82, 92)) ('NTRK1', 'Gene', '4914', (327, 332)) ('PPARG', 'Gene', '5468', (320, 325)) ('papillary thyroid carcinoma', 'Phenotype', 'HP:0002895', (64, 91)) ('BRAF', 'Gene', '673', (253, 257)) ('PPARG', 'Gene', (320, 325)) ('NTRK1', 'Gene', (327, 332)) ('BRAF', 'Gene', (253, 257)) ('LTK', 'Gene', '4058', (346, 349)) ('RET', 'Gene', '5979', (315, 318)) ('NRAS', 'Gene', '4893', (267, 271)) ('LTK', 'Gene', (346, 349)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (74, 91)) ('papillary thyroid carcinomas', 'Disease', (64, 92)) ('papillary thyroid carcinomas', 'Phenotype', 'HP:0002895', (64, 92)) ('FGFR2', 'Gene', (356, 361)) ('HRAS', 'Gene', '3265', (276, 280)) ('RET', 'Gene', (315, 318)) ('carcinoma', 'Phenotype', 'HP:0030731', (82, 91)) ('NRAS', 'Gene', (267, 271)) ('ALK', 'Gene', '238', (341, 344)) ('HRAS', 'Gene', (276, 280)) ('FGFR2', 'Gene', '2263', (356, 361)) ('ALK', 'Gene', (341, 344)) 26981 27742784 The investigators also found that BRAFV600E mutated PTCs signal preferentially through the MAPK pathway, while RAS mutated PTCs signal through either the MAPK pathway or the PI3K pathway. ('BRAFV600E', 'Mutation', 'rs113488022', (34, 43)) ('PTCs', 'Gene', (52, 56)) ('MAPK pathway', 'Pathway', (91, 103)) ('PI3K pathway', 'Pathway', (174, 186)) ('BRAFV600E mutated', 'Var', (34, 51)) ('preferentially', 'PosReg', (64, 78)) ('MAPK pathway', 'Pathway', (154, 166)) 26989 27742784 Approximately 50% of sporadic medullary thyroid carcinomas have somatic RET mutations, and a lesser number have RAS mutations. ('carcinomas', 'Phenotype', 'HP:0030731', (48, 58)) ('medullary thyroid carcinomas', 'Phenotype', 'HP:0002865', (30, 58)) ('mutations', 'Var', (76, 85)) ('thyroid carcinomas', 'Phenotype', 'HP:0002890', (40, 58)) ('thyroid carcinomas', 'Disease', (40, 58)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (30, 57)) ('RET', 'Gene', '5979', (72, 75)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (40, 57)) ('RET', 'Gene', (72, 75)) ('thyroid carcinomas', 'Disease', 'MESH:D013964', (40, 58)) ('carcinoma', 'Phenotype', 'HP:0030731', (48, 57)) 26990 27742784 Virtually all hereditary medullary thyroid carcinomas have germline RET mutations, and there is a strong genotype-phenotype relationship in patients with MEN2A and MEN2B, not only regarding the range of disease expression, but also the severity of disease. ('mutations', 'Var', (72, 81)) ('MEN2A', 'Gene', (154, 159)) ('MEN2A', 'Gene', '5979', (154, 159)) ('MEN2B', 'Gene', (164, 169)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (35, 52)) ('MEN2B', 'Gene', '5979', (164, 169)) ('RET', 'Gene', (68, 71)) ('germline', 'Var', (59, 67)) ('carcinoma', 'Phenotype', 'HP:0030731', (43, 52)) ('carcinomas', 'Phenotype', 'HP:0030731', (43, 53)) ('medullary thyroid carcinomas', 'Phenotype', 'HP:0002865', (25, 53)) ('thyroid carcinomas', 'Disease', 'MESH:D013964', (35, 53)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (25, 52)) ('patients', 'Species', '9606', (140, 148)) ('RET', 'Gene', '5979', (68, 71)) ('thyroid carcinomas', 'Phenotype', 'HP:0002890', (35, 53)) ('thyroid carcinomas', 'Disease', (35, 53)) 27007 27742784 No MEN1 mutation is found in 10 to 30% of typical MEN1 kindreds (probably the result of current DNA sequencing strategies) and 10% of the mutations are de novo, there being no family history. ('MEN1', 'Gene', '4221', (3, 7)) ('MEN1', 'Gene', (3, 7)) ('MEN1', 'Gene', (50, 54)) ('MEN1', 'Gene', '4221', (50, 54)) ('mutation', 'Var', (8, 16)) ('mutations', 'Var', (138, 147)) 27008 27742784 MEN1 is also the most common mutation in sporadic pancreatic neuroendocrine tumors, followed by mutations in DAXX/ATRX (Death-Domain Associated Protein/Mental Retardation Syndrome X-Linked Genes) and the mTOR (Molecular Target of Rapamycin) pathway. ('MEN1', 'Gene', '4221', (0, 4)) ('DAXX', 'Gene', '1616', (109, 113)) ('Mental Retardation Syndrome', 'Disease', (152, 179)) ('mTOR', 'Gene', '2475', (204, 208)) ('common', 'Reg', (22, 28)) ('pancreatic neuroendocrine tumors', 'Disease', (50, 82)) ('mutations', 'Var', (96, 105)) ('MEN1', 'Gene', (0, 4)) ('Mental Retardation Syndrome', 'Disease', 'MESH:D008607', (152, 179)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (61, 82)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (66, 81)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) ('Molecular Target of Rapamycin', 'Gene', '2475', (210, 239)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('ATRX', 'Gene', (114, 118)) ('Molecular Target of Rapamycin', 'Gene', (210, 239)) ('ATRX', 'Gene', '546', (114, 118)) ('Mental Retardation', 'Phenotype', 'HP:0001249', (152, 170)) ('mTOR', 'Gene', (204, 208)) ('pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (50, 82)) ('DAXX', 'Gene', (109, 113)) 27036 27742784 The term, MEN4, applies to rare patients with the MEN1 phenotype, who have germline mutations in CDKN1B, not MEN1. ('patients', 'Species', '9606', (32, 40)) ('CDKN1B', 'Gene', '1027', (97, 103)) ('MEN4', 'Gene', '1027', (10, 14)) ('mutations', 'Var', (84, 93)) ('MEN1', 'Gene', (50, 54)) ('MEN1', 'Gene', (109, 113)) ('CDKN1B', 'Gene', (97, 103)) ('MEN4', 'Gene', (10, 14)) ('MEN1', 'Gene', '4221', (50, 54)) ('MEN1', 'Gene', '4221', (109, 113)) 27037 27742784 The Carney complex, characterized by multiple skin lesions cardiac myxoma, acromegaly, schwannoma, thyroid tumors, and pigmented nodular adrenocortical disease, is caused by germline mutations in CNC1 which encodes the regulatory subunit of the protein kinase A (PRKAR1A). ('acromegaly', 'Disease', 'MESH:D000172', (75, 85)) ('thyroid tumors', 'Disease', 'MESH:D013959', (99, 113)) ('germline mutations', 'Var', (174, 192)) ('schwannoma', 'Disease', 'MESH:D009442', (87, 97)) ('acromegaly', 'Disease', (75, 85)) ('acromegaly', 'Phenotype', 'HP:0000845', (75, 85)) ('skin lesions cardiac myxoma', 'Disease', (46, 73)) ('PRKAR1A', 'Gene', (263, 270)) ('tumors', 'Phenotype', 'HP:0002664', (107, 113)) ('pigmented nodular adrenocortical disease', 'Disease', 'MESH:C566469', (119, 159)) ('Carney complex', 'Disease', (4, 18)) ('thyroid tumors', 'Disease', (99, 113)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('pigmented nodular adrenocortical disease', 'Disease', (119, 159)) ('pigmented nodular adrenocortical disease', 'Phenotype', 'HP:0001580', (119, 159)) ('PRKAR1A', 'Gene', '5573', (263, 270)) ('schwannoma', 'Phenotype', 'HP:0100008', (87, 97)) ('CNC1', 'Gene', (196, 200)) ('CNC1', 'Gene', '5573', (196, 200)) ('cardiac myxoma', 'Phenotype', 'HP:0011672', (59, 73)) ('schwannoma', 'Disease', (87, 97)) ('caused by', 'Reg', (164, 173)) ('skin lesions cardiac myxoma', 'Disease', 'MESH:D006331', (46, 73)) 27038 27742784 Approximately 65% of patients have mutations in PRKARIA and 20% have mutations in the putative CNC2 gene located on chromosome 2; however, the specific gene has not been identified. ('mutations', 'Var', (69, 78)) ('PRKARIA', 'Gene', (48, 55)) ('patients', 'Species', '9606', (21, 29)) ('CNC2', 'Gene', '1257', (95, 99)) ('CNC2', 'Gene', (95, 99)) ('mutations', 'Var', (35, 44)) 27040 27742784 The large majority of pituitary tumors are sporadic, and not associated with any known syndrome; however, germline AIP mutations are found in 4% of them; the incidence being higher in children and in young adults with macroadenomas or gigantism. ('pituitary tumors', 'Disease', (22, 38)) ('AIP', 'Gene', '9049', (115, 118)) ('AIP', 'Gene', (115, 118)) ('macroadenomas', 'Disease', 'None', (218, 231)) ('children', 'Species', '9606', (184, 192)) ('macroadenomas', 'Disease', (218, 231)) ('tumors', 'Phenotype', 'HP:0002664', (32, 38)) ('pituitary tumors', 'Disease', 'MESH:D010911', (22, 38)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('mutations', 'Var', (119, 128)) ('gigantism', 'Disease', (235, 244)) 27041 27742784 Sporadic tumors with AIP mutations, compared to those without AIP mutations, are more common in males, are larger and invasive, and secrete growth hormone, or prolactin. ('mutations', 'Var', (25, 34)) ('common', 'Reg', (86, 92)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('growth hormone', 'Gene', (140, 154)) ('Sporadic tumors', 'Disease', 'MESH:D009369', (0, 15)) ('AIP', 'Gene', '9049', (62, 65)) ('Sporadic tumors', 'Disease', (0, 15)) ('tumors', 'Phenotype', 'HP:0002664', (9, 15)) ('growth hormone', 'Gene', '2688', (140, 154)) ('AIP', 'Gene', (21, 24)) ('prolactin', 'MPA', (159, 168)) ('AIP', 'Gene', '9049', (21, 24)) ('AIP', 'Gene', (62, 65)) 27042 27742784 Germline mutations in MEN1 are found in 0.6 to 2.6% of very young patients with isolated pituitary tumors. ('Germline mutations', 'Var', (0, 18)) ('tumors', 'Phenotype', 'HP:0002664', (99, 105)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('MEN1', 'Gene', (22, 26)) ('isolated pituitary tumors', 'Disease', 'MESH:D010911', (80, 105)) ('MEN1', 'Gene', '4221', (22, 26)) ('patients', 'Species', '9606', (66, 74)) ('isolated pituitary tumors', 'Disease', (80, 105)) 27043 27742784 There are few reports of CDKN1B mutations, and no reports of PRKAR1A mutations in sporadic pituitary tumors. ('pituitary tumors', 'Disease', (91, 107)) ('CDKN1B', 'Gene', (25, 31)) ('PRKAR1A', 'Gene', (61, 68)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('pituitary tumors', 'Disease', 'MESH:D010911', (91, 107)) ('mutations', 'Var', (32, 41)) ('PRKAR1A', 'Gene', '5573', (61, 68)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('CDKN1B', 'Gene', '1027', (25, 31)) 27044 27742784 Although the subject of intense investigation, the role of epigenetic regulation on the pathogenesis of pituitary adenomas, is unclear and merits further investigation. ('pituitary adenomas', 'Phenotype', 'HP:0002893', (104, 122)) ('pituitary adenomas', 'Disease', (104, 122)) ('epigenetic regulation', 'Var', (59, 80)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (104, 121)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (104, 122)) 27046 27742784 They also describe a number of somatic mutations associated with sporadic pituitary tumors, but note that the role of these mutations in tumor pathogenesis and progression is unclear. ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('tumor', 'Disease', (137, 142)) ('pituitary tumors', 'Disease', (74, 90)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('associated', 'Reg', (49, 59)) ('mutations', 'Var', (39, 48)) ('tumor', 'Disease', (84, 89)) ('pituitary tumors', 'Disease', 'MESH:D010911', (74, 90)) ('tumor', 'Disease', 'MESH:D009369', (137, 142)) ('tumors', 'Phenotype', 'HP:0002664', (84, 90)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) 27050 27785149 Mediastinal paragangliomas related to SDHx gene mutations Paragangliomas (PGLs) related to hereditary syndromes are rare mediastinal tumors. ('PGLs', 'Phenotype', 'HP:0002668', (74, 78)) ('Mediastinal paragangliomas', 'Disease', (0, 26)) ('SDHx gene', 'Gene', (38, 47)) ('Paragangliomas', 'Disease', (58, 72)) ('tumors', 'Phenotype', 'HP:0002664', (133, 139)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (58, 71)) ('paraganglioma', 'Phenotype', 'HP:0002668', (12, 25)) ('Paragangliomas', 'Disease', 'MESH:D010235', (58, 72)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('Mediastinal paragangliomas', 'Disease', 'MESH:D008480', (0, 26)) ('mediastinal tumors', 'Disease', 'MESH:D008480', (121, 139)) ('hereditary syndromes', 'Disease', 'MESH:D009386', (91, 111)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (58, 72)) ('mediastinal tumors', 'Disease', (121, 139)) ('hereditary syndromes', 'Disease', (91, 111)) ('paragangliomas', 'Phenotype', 'HP:0002668', (12, 26)) ('mutations', 'Var', (48, 57)) 27051 27785149 Paragangliomas are caused by mutations in genes encoding subunits of succinate dehydrogenase enzyme (SDH). ('Paragangliomas', 'Disease', 'MESH:D010235', (0, 14)) ('caused by', 'Reg', (19, 28)) ('mutations', 'Var', (29, 38)) ('SDH', 'Gene', '6390', (101, 104)) ('succinate dehydrogenase', 'Gene', '6390', (69, 92)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (0, 14)) ('succinate dehydrogenase', 'Gene', (69, 92)) ('SDH', 'Gene', (101, 104)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('Paragangliomas', 'Disease', (0, 14)) 27052 27785149 To evaluate clinical, anatomical and functional characteristics of mediastinal paragangliomas related to SDHx gene mutations. ('SDHx', 'Chemical', '-', (105, 109)) ('mutations', 'Var', (115, 124)) ('paragangliomas', 'Disease', (79, 93)) ('SDHx', 'Gene', (105, 109)) ('paragangliomas', 'Disease', 'MESH:D010235', (79, 93)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('paragangliomas', 'Phenotype', 'HP:0002668', (79, 93)) ('related', 'Reg', (94, 101)) 27053 27785149 Retrospective analysis of 75 patients with confirmed SDHx gene mutations (24 patients with SDHB, 5 SDHC, 46 with SDHD mutations) was performed. ('mutations', 'Var', (63, 72)) ('patients', 'Species', '9606', (29, 37)) ('SDHx', 'Chemical', '-', (53, 57)) ('SDHD', 'Gene', (113, 117)) ('SDHD', 'Gene', '6392', (113, 117)) ('SDHB', 'Gene', '6390', (91, 95)) ('SDHC', 'Gene', '6391', (99, 103)) ('patients', 'Species', '9606', (77, 85)) ('SDHB', 'Gene', (91, 95)) ('SDHx gene', 'Gene', (53, 62)) ('SDHC', 'Gene', (99, 103)) 27055 27785149 Out of 75 patients, 16 (21%) patients (1 SDHB, 15 SDHD mutations) had 17 PGLs localized in the mediastinum. ('patients', 'Species', '9606', (29, 37)) ('SDHD', 'Gene', (50, 54)) ('SDHD', 'Gene', '6392', (50, 54)) ('mutations', 'Var', (55, 64)) ('SDHB', 'Gene', '6390', (41, 45)) ('PGLs', 'Phenotype', 'HP:0002668', (73, 77)) ('patients', 'Species', '9606', (10, 18)) ('SDHB', 'Gene', (41, 45)) 27060 27785149 All PGLs were benign except in 1 patient with the SDHB mutation and PGL detected in the posterior mediastinum, who had a metastatic disease. ('patient', 'Species', '9606', (33, 40)) ('SDHB', 'Gene', (50, 54)) ('PGLs', 'Phenotype', 'HP:0002668', (4, 8)) ('mutation', 'Var', (55, 63)) ('SDHB', 'Gene', '6390', (50, 54)) 27064 27785149 Most cases of familial paragangliomas are caused by mutations in the genes encoding A, B, C, D subunits of mitochondrial complex II enzyme succinate dehydrogenase (SDH). ('mutations', 'Var', (52, 61)) ('familial paragangliomas', 'Disease', (14, 37)) ('A, B, C, D subunits of mitochondrial complex II enzyme succinate dehydrogenase', 'Gene', '10058', (84, 162)) ('paraganglioma', 'Phenotype', 'HP:0002668', (23, 36)) ('caused by', 'Reg', (42, 51)) ('SDH', 'Gene', (164, 167)) ('familial paragangliomas', 'Disease', 'MESH:D010235', (14, 37)) ('SDH', 'Gene', '6390', (164, 167)) ('paragangliomas', 'Phenotype', 'HP:0002668', (23, 37)) 27065 27785149 Predominantly, PGL syndromes are associated with SDHD and SDHB mutations. ('mutations', 'Var', (63, 72)) ('SDHB', 'Gene', (58, 62)) ('PGL syndromes', 'Disease', (15, 28)) ('associated', 'Reg', (33, 43)) ('SDHD', 'Gene', '6392', (49, 53)) ('SDHB', 'Gene', '6390', (58, 62)) ('SDHD', 'Gene', (49, 53)) 27066 27785149 SDHC mutation is rare, and typically patients have benign, solitary head and neck paragangliomas. ('paragangliomas', 'Phenotype', 'HP:0002668', (82, 96)) ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('patients', 'Species', '9606', (37, 45)) ('SDHC', 'Gene', (0, 4)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (68, 96)) ('SDHC', 'Gene', '6391', (0, 4)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (77, 96)) ('mutation', 'Var', (5, 13)) ('neck paragangliomas', 'Disease', (77, 96)) 27067 27785149 SDHD mutation carriers most frequently develop multifocal head and neck paragangliomas; adrenal and extraadrenal PGLs occur less frequently. ('PGLs', 'Phenotype', 'HP:0002668', (113, 117)) ('neck paragangliomas', 'Disease', (67, 86)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (67, 86)) ('paraganglioma', 'Phenotype', 'HP:0002668', (72, 85)) ('paragangliomas', 'Phenotype', 'HP:0002668', (72, 86)) ('SDHD', 'Gene', '6392', (0, 4)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (58, 86)) ('multifocal', 'Disease', (47, 57)) ('SDHD', 'Gene', (0, 4)) ('develop', 'PosReg', (39, 46)) ('mutation', 'Var', (5, 13)) 27068 27785149 SDHB mutation carriers are at risk of malignant and extraadrenal abdominal and thoracic paragangliomas. ('thoracic paragangliomas', 'Disease', 'MESH:D010235', (79, 102)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) ('thoracic paragangliomas', 'Disease', (79, 102)) ('paraganglioma', 'Phenotype', 'HP:0002668', (88, 101)) ('paragangliomas', 'Phenotype', 'HP:0002668', (88, 102)) ('mutation', 'Var', (5, 13)) 27082 27785149 The aim of the study was to evaluate clinical, biochemical and imaging characteristics of mediastinal paragangliomas related to SDHx gene mutations. ('paraganglioma', 'Phenotype', 'HP:0002668', (102, 115)) ('paragangliomas', 'Phenotype', 'HP:0002668', (102, 116)) ('paragangliomas', 'Disease', 'MESH:D010235', (102, 116)) ('SDHx', 'Chemical', '-', (128, 132)) ('SDHx', 'Gene', (128, 132)) ('related', 'Reg', (117, 124)) ('paragangliomas', 'Disease', (102, 116)) ('mutations', 'Var', (138, 147)) 27083 27785149 We retrospectively analyzed the patients with SDHx mutations confirmed by genetic testing and registered in the Polish Pheochromocytoma-Paraganglioma Registry. ('SDHx', 'Chemical', '-', (46, 50)) ('patients', 'Species', '9606', (32, 40)) ('mutations', 'Var', (51, 60)) ('Pheochromocytoma-Paraganglioma', 'Disease', (119, 149)) ('Pheochromocytoma-Paraganglioma', 'Disease', 'MESH:D010673', (119, 149)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (119, 135)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (136, 149)) ('SDHx', 'Gene', (46, 50)) 27087 27785149 Overall, 75 patients were enrolled in the study (24 patients with SDHB mutations, 5 with SDHC, 46 with SDHD mutations); 16 patients had PGLs localized in the mediastinum. ('SDHB', 'Gene', (66, 70)) ('patients', 'Species', '9606', (12, 20)) ('PGLs', 'Phenotype', 'HP:0002668', (136, 140)) ('SDHC', 'Gene', (89, 93)) ('patients', 'Species', '9606', (123, 131)) ('SDHC', 'Gene', '6391', (89, 93)) ('mutations', 'Var', (71, 80)) ('SDHB', 'Gene', '6390', (66, 70)) ('SDHD', 'Gene', '6392', (103, 107)) ('patients', 'Species', '9606', (52, 60)) ('SDHD', 'Gene', (103, 107)) 27094 27785149 Carriers of the SDHx gene mutations with paragangliomas detected by CT examination were subsequently screened by somatostatin receptor scintigraphy (SRS) and mIBG scintigraphy as additional functional imaging modalities. ('SDHx', 'Gene', (16, 20)) ('paragangliomas', 'Disease', 'MESH:D010235', (41, 55)) ('paragangliomas', 'Disease', (41, 55)) ('SDHx', 'Chemical', '-', (16, 20)) ('paraganglioma', 'Phenotype', 'HP:0002668', (41, 54)) ('SRS', 'Chemical', '-', (149, 152)) ('paragangliomas', 'Phenotype', 'HP:0002668', (41, 55)) ('mutations', 'Var', (26, 35)) ('mIBG', 'Chemical', '-', (158, 162)) 27097 27785149 In each case after thyroid suppression using Lugol's solution, one day before the study, the patients received an injection of 300-370 MBq of 123I mIBG. ('thyroid suppression', 'Phenotype', 'HP:0008245', (19, 38)) ('mIBG', 'Gene', (147, 151)) ('123I', 'Var', (142, 146)) ('patients', 'Species', '9606', (93, 101)) ('mIBG', 'Chemical', '-', (147, 151)) 27103 27785149 All patients with SDHD mutations, except 1, had a C11X nonsense mutation, which was recognized as a founding mutation, and 1 patient had an exon deletion. ('patient', 'Species', '9606', (4, 11)) ('SDHD', 'Gene', '6392', (18, 22)) ('mutations', 'Var', (23, 32)) ('C11X', 'Var', (50, 54)) ('patients', 'Species', '9606', (4, 12)) ('patient', 'Species', '9606', (125, 132)) ('SDHD', 'Gene', (18, 22)) ('C11X', 'SUBSTITUTION', 'None', (50, 54)) 27104 27785149 In 1 SDHB carrier, we observed a missense mutation. ('missense mutation', 'Var', (33, 50)) ('SDHB', 'Gene', '6390', (5, 9)) ('SDHB', 'Gene', (5, 9)) 27105 27785149 One patient with SDHB mutation had a malignant disease with metastasis to the lung, bone and lymph nodes. ('malignant disease', 'Disease', 'MESH:D009369', (37, 54)) ('malignant disease', 'Disease', (37, 54)) ('mutation', 'Var', (22, 30)) ('SDHB', 'Gene', '6390', (17, 21)) ('patient', 'Species', '9606', (4, 11)) ('metastasis to the lung', 'Disease', (60, 82)) ('metastasis to the lung', 'Disease', 'MESH:D009362', (60, 82)) ('SDHB', 'Gene', (17, 21)) 27127 27785149 One SDHB gene mutation carrier had a metastatic disease at the time of the diagnosis of a posterior mediastinal paraganglioma. ('metastatic disease', 'Disease', (37, 55)) ('paraganglioma', 'Disease', (112, 125)) ('mutation', 'Var', (14, 22)) ('paraganglioma', 'Disease', 'MESH:D010235', (112, 125)) ('SDHB', 'Gene', '6390', (4, 8)) ('SDHB', 'Gene', (4, 8)) ('paraganglioma', 'Phenotype', 'HP:0002668', (112, 125)) 27130 27785149 Paragangliomas related to SDHx gene mutations are mainly localized in the head and neck region, and extraadrenally in the abdomen. ('Paragangliomas', 'Disease', 'MESH:D010235', (0, 14)) ('SDHx', 'Gene', (26, 30)) ('SDHx', 'Chemical', '-', (26, 30)) ('mutations', 'Var', (36, 45)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (0, 14)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('Paragangliomas', 'Disease', (0, 14)) 27134 27785149 Their findings similar to Ghayee underline that mediastinal paragangliomas are closely related to SDHx mutations and are often malignant. ('paragangliomas', 'Disease', (60, 74)) ('paragangliomas', 'Disease', 'MESH:D010235', (60, 74)) ('mutations', 'Var', (103, 112)) ('paragangliomas', 'Phenotype', 'HP:0002668', (60, 74)) ('SDHx', 'Gene', (98, 102)) ('SDHx', 'Chemical', '-', (98, 102)) ('paraganglioma', 'Phenotype', 'HP:0002668', (60, 73)) 27139 27785149 All patients were carriers of SDHx mutations, and the majority of our patients underwent a CT evaluation of the chest as a screening test after detecting SDHx gene mutations. ('patients', 'Species', '9606', (70, 78)) ('SDHx', 'Gene', (30, 34)) ('SDHx', 'Chemical', '-', (154, 158)) ('SDHx', 'Gene', (154, 158)) ('SDHx', 'Chemical', '-', (30, 34)) ('patients', 'Species', '9606', (4, 12)) ('mutations', 'Var', (35, 44)) 27140 27785149 We found that the prevalence of mediastinal PGLs may be higher in carriers of SDHx mutations than previously reported, especially in SDHD gene mutations. ('mutations', 'Var', (83, 92)) ('carriers', 'Reg', (66, 74)) ('PGLs', 'Phenotype', 'HP:0002668', (44, 48)) ('SDHx', 'Chemical', '-', (78, 82)) ('SDHx', 'Gene', (78, 82)) ('SDHD', 'Gene', '6392', (133, 137)) ('SDHD', 'Gene', (133, 137)) ('mediastinal PGLs', 'Disease', (32, 48)) ('higher', 'PosReg', (56, 62)) 27142 27785149 Among 75 patients with SDHx gene mutations, 16 (21%) patients had paragangliomas located in the mediastinum, but only 3 patients (with paragangliomas located in the posterior mediastinum) had symptoms associated with catecholamine hypersecretion, while the remaining patients were asymptomatic. ('patients', 'Species', '9606', (9, 17)) ('patients', 'Species', '9606', (267, 275)) ('SDHx', 'Chemical', '-', (23, 27)) ('paragangliomas', 'Disease', (66, 80)) ('paragangliomas', 'Disease', 'MESH:D010235', (66, 80)) ('SDHx', 'Gene', (23, 27)) ('patients', 'Species', '9606', (53, 61)) ('catecholamine', 'Chemical', 'MESH:D002395', (217, 230)) ('mutations', 'Var', (33, 42)) ('paraganglioma', 'Phenotype', 'HP:0002668', (66, 79)) ('paragangliomas', 'Phenotype', 'HP:0002668', (66, 80)) ('paragangliomas', 'Disease', (135, 149)) ('paragangliomas', 'Disease', 'MESH:D010235', (135, 149)) ('catecholamine', 'MPA', (217, 230)) ('patients', 'Species', '9606', (120, 128)) ('paragangliomas', 'Phenotype', 'HP:0002668', (135, 149)) ('paraganglioma', 'Phenotype', 'HP:0002668', (135, 148)) 27152 27785149 In our report, the prevalence of mediastinal paragangliomas was higher (8.2%) than in other reports, mainly due to SDHD gene mutations and with a benign course. ('mutations', 'Var', (125, 134)) ('SDHD', 'Gene', '6392', (115, 119)) ('SDHD', 'Gene', (115, 119)) ('paragangliomas', 'Disease', (45, 59)) ('paragangliomas', 'Disease', 'MESH:D010235', (45, 59)) ('paragangliomas', 'Phenotype', 'HP:0002668', (45, 59)) ('paraganglioma', 'Phenotype', 'HP:0002668', (45, 58)) 27156 27785149 It is SDHD p.C11X, which was recognized as a Polish founder mutation. ('p.C11X', 'Mutation', 'rs104894309', (11, 17)) ('SDHD', 'Gene', (6, 10)) ('SDHD', 'Gene', '6392', (6, 10)) ('p.C11X', 'Var', (11, 17)) 27158 27785149 Most mediastinal paragangliomas were related to SDHD gene mutations, were asymptomatic, and were localized intrapericardially. ('mutations', 'Var', (58, 67)) ('paragangliomas', 'Disease', (17, 31)) ('paragangliomas', 'Disease', 'MESH:D010235', (17, 31)) ('paraganglioma', 'Phenotype', 'HP:0002668', (17, 30)) ('related', 'Reg', (37, 44)) ('paragangliomas', 'Phenotype', 'HP:0002668', (17, 31)) ('SDHD', 'Gene', '6392', (48, 52)) ('SDHD', 'Gene', (48, 52)) 27159 27785149 None of the PGLs related to SDHD mutations were malignant, and during the follow-up no metastases were detected. ('SDHD', 'Gene', (28, 32)) ('metastases', 'Disease', (87, 97)) ('mutations', 'Var', (33, 42)) ('metastases', 'Disease', 'MESH:D009362', (87, 97)) ('SDHD', 'Gene', '6392', (28, 32)) ('PGLs', 'Phenotype', 'HP:0002668', (12, 16)) 27160 27785149 Only one mediastinal PGL related to SDHB mutation was malignant. ('mutation', 'Var', (41, 49)) ('SDHB', 'Gene', (36, 40)) ('SDHB', 'Gene', '6390', (36, 40)) 27161 27785149 The results of our study show that the prevalence of mediastinal paragangliomas in asymptomatic SDHx mutation carriers may be higher than previously believed. ('paragangliomas', 'Disease', (65, 79)) ('paragangliomas', 'Disease', 'MESH:D010235', (65, 79)) ('paragangliomas', 'Phenotype', 'HP:0002668', (65, 79)) ('paraganglioma', 'Phenotype', 'HP:0002668', (65, 78)) ('SDHx', 'Gene', (96, 100)) ('SDHx', 'Chemical', '-', (96, 100)) ('mutation', 'Var', (101, 109)) 27223 19889235 131I-Metaiodobenzylguanidine (131I-MIBG) scintigraphic scan tomography was performed and the retroperitoneal tumor accumulated 131I-MIBG 48 hours after radioisotope injection (Fig. ('131I-Metaiodobenzylguanidine', 'Chemical', '-', (0, 28)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (30, 39)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (127, 136)) ('retroperitoneal tumor', 'Disease', 'MESH:D012186', (93, 114)) ('retroperitoneal tumor', 'Disease', (93, 114)) ('131I-MIBG', 'Var', (127, 136)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) 27246 19889235 In the present case, diagnostic images obtained by contrast-enhanced CT scan, MRI and 131I-MIBG scintigraphic scan tomography were compatible with paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (147, 160)) ('paraganglioma', 'Disease', (147, 160)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (86, 95)) ('paraganglioma', 'Disease', 'MESH:D010235', (147, 160)) ('131I-MIBG', 'Var', (86, 95)) 27282 31903598 Over time, non-physiologic and excessive release of these hormones can lead to cardiovascular complications, decompensation and death. ('lead to', 'Reg', (71, 78)) ('non-physiologic', 'Var', (11, 26)) ('death', 'Disease', (128, 133)) ('cardiovascular complications', 'Disease', 'MESH:D002318', (79, 107)) ('cardiovascular complications', 'Disease', (79, 107)) ('cardiovascular complications', 'Phenotype', 'HP:0001626', (79, 107)) ('decompensation', 'Disease', (109, 123)) ('release', 'MPA', (41, 48)) ('cardiovascular complication', 'Phenotype', 'HP:0001626', (79, 106)) ('death', 'Disease', 'MESH:D003643', (128, 133)) 27283 31903598 Intraoperative manipulation of the tumour can elicit hypertensive crises, which historically have been regarded as responsible for perioperative mortality rates of up to 48%. ('elicit', 'Reg', (46, 52)) ('mortality', 'Disease', (145, 154)) ('manipulation', 'Var', (15, 27)) ('hypertensive crises', 'Phenotype', 'HP:0100735', (53, 72)) ('tumour', 'Phenotype', 'HP:0002664', (35, 41)) ('tumour', 'Disease', 'MESH:D009369', (35, 41)) ('hypertensive', 'Disease', 'MESH:D006973', (53, 65)) ('mortality', 'Disease', 'MESH:D003643', (145, 154)) ('hypertensive', 'Disease', (53, 65)) ('tumour', 'Disease', (35, 41)) 27398 33329398 Genetic testing for SDHB, SHDC, and SDHD gene mutations by aCGH (ExonArrayDx) did not detect any disease-associated mutations in exons 1-8 of the SDHB gene, exons 1-6 of the SDHC gene, exons 1-4 of the SDHD gene, or the c.232 G>A in exon 3 of the SDHAF2 gene (required for flavination of the SDHA subunit). ('SDHA', 'Gene', '6389', (292, 296)) ('SDHAF2', 'Gene', '54949', (247, 253)) ('SDHD', 'Gene', (36, 40)) ('SDHB', 'Gene', (146, 150)) ('SDHC', 'Gene', (174, 178)) ('SDHD', 'Gene', '6392', (36, 40)) ('c.232 G>A', 'Mutation', 'rs113560320', (220, 229)) ('SDHC', 'Gene', '6391', (174, 178)) ('SDHA', 'Gene', (292, 296)) ('SDHB', 'Gene', (20, 24)) ('SDHD', 'Gene', '6392', (202, 206)) ('c.232 G>A', 'Var', (220, 229)) ('SDHA', 'Gene', '6389', (247, 251)) ('SDHB', 'Gene', '6390', (20, 24)) ('SDHD', 'Gene', (202, 206)) ('SDHB', 'Gene', '6390', (146, 150)) ('SDHA', 'Gene', (247, 251)) ('SDHAF2', 'Gene', (247, 253)) 27404 33329398 The tumors showed I131-MIBG uptake. ('I131-MIBG', 'Chemical', '-', (18, 27)) ('tumors', 'Disease', 'MESH:D009369', (4, 10)) ('tumors', 'Disease', (4, 10)) ('tumors', 'Phenotype', 'HP:0002664', (4, 10)) ('I131-MIBG', 'Var', (18, 27)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) 27434 33329398 With increasing dose levels, I131-MIBG emits sufficient radiation to lead to cellular damage. ('I131-MIBG', 'Var', (29, 38)) ('cellular damage', 'CPA', (77, 92)) ('lead to', 'Reg', (69, 76)) ('I131-MIBG', 'Chemical', '-', (29, 38)) 27436 33329398 In the pivotal phase II study of HSA I131-MIBG, the primary endpoint was the reduction in the number of anti-hypertensives and anti-hypertensive dose by greater than or equal to 50%. ('HSA I131-MIBG', 'Var', (33, 46)) ('reduction', 'NegReg', (77, 86)) ('hypertensive', 'Disease', 'MESH:D006973', (132, 144)) ('hypertensives', 'Disease', 'MESH:D006973', (109, 122)) ('anti-hypertensives', 'Phenotype', 'HP:0000822', (104, 122)) ('hypertensives', 'Disease', (109, 122)) ('hypertensive', 'Disease', (132, 144)) ('I131-MIBG', 'Chemical', '-', (37, 46)) ('hypertensive', 'Disease', 'MESH:D006973', (109, 121)) ('hypertensive', 'Disease', (109, 121)) 27449 33329398 Patients with PPGL already have elevated blood pressure due to catecholamine excess. ('elevated blood pressure', 'Phenotype', 'HP:0032263', (32, 55)) ('elevated', 'PosReg', (32, 40)) ('catecholamine', 'Chemical', 'MESH:D002395', (63, 76)) ('catecholamine excess', 'MPA', (63, 83)) ('Patients', 'Species', '9606', (0, 8)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (63, 83)) ('blood pressure', 'MPA', (41, 55)) ('PPGL', 'Chemical', '-', (14, 18)) ('PPGL', 'Var', (14, 18)) 27611 32195067 Exogenous infusion of norepinephrine has been reported to induce myocardial necrosis and leukocyte infiltration with degenerative changes. ('myocardial necrosis', 'Phenotype', 'HP:0001700', (65, 84)) ('myocardial necrosis', 'Disease', 'MESH:D009202', (65, 84)) ('norepinephrine', 'Chemical', 'MESH:D009638', (22, 36)) ('leukocyte infiltration', 'CPA', (89, 111)) ('norepinephrine', 'Var', (22, 36)) ('myocardial necrosis', 'Disease', (65, 84)) ('degenerative changes', 'Phenotype', 'HP:0002180', (117, 137)) 27644 32195067 Mutations in the RYR2 receptor are not unique to CPVT and can occur in long QT syndrome. ('long QT syndrome', 'Disease', 'MESH:D008133', (71, 87)) ('CPVT', 'Phenotype', 'HP:0004758', (49, 53)) ('occur', 'Reg', (62, 67)) ('Mutations', 'Var', (0, 9)) ('RYR2', 'Gene', (17, 21)) ('long QT syndrome', 'Disease', (71, 87)) ('long QT syndrome', 'Phenotype', 'HP:0001657', (71, 87)) 27651 32195067 It should be noted that CPVT can be frequently linked to aberrant sinus node function and may also contribute to atrial tachyarrhythmias. ('arrhythmias', 'Phenotype', 'HP:0011675', (125, 136)) ('aberrant sinus node', 'Phenotype', 'HP:0011704', (57, 76)) ('atrial tachyarrhythmias', 'Disease', (113, 136)) ('CPVT', 'Phenotype', 'HP:0004758', (24, 28)) ('contribute', 'Reg', (99, 109)) ('atrial tachyarrhythmias', 'Disease', 'MESH:D013617', (113, 136)) ('atrial tachyarrhythmias', 'Phenotype', 'HP:0001692', (113, 136)) ('linked', 'Reg', (47, 53)) ('arrhythmia', 'Phenotype', 'HP:0011675', (125, 135)) ('CPVT', 'Disease', (24, 28)) ('aberrant', 'Var', (57, 65)) 27663 32133432 Tinnitus With Unexpected Spanish Roots: Head and Neck Paragangliomas Caused by SDHAF2 Mutation It is estimated that up to 40% of all head and neck paragangliomas (HNPGL) have a hereditary background with the most common mutations being found in the succinate dehydrogenase (SDH) genes. ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (133, 161)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (142, 161)) ('HNPGL', 'Phenotype', 'HP:0002864', (163, 168)) ('Mutation', 'Var', (86, 94)) ('succinate dehydrogenase', 'Gene', (249, 272)) ('SDH', 'Gene', '6390', (79, 82)) ('Neck Paragangliomas', 'Disease', (49, 68)) ('Head and Neck Paragangliomas', 'Phenotype', 'HP:0002864', (40, 68)) ('paraganglioma', 'Phenotype', 'HP:0002668', (147, 160)) ('SDHAF2', 'Gene', '54949', (79, 85)) ('Caused by', 'Reg', (69, 78)) ('SDHAF2', 'Gene', (79, 85)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (54, 68)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (133, 160)) ('SDH', 'Gene', (79, 82)) ('SDH', 'Gene', '6390', (274, 277)) ('succinate dehydrogenase', 'Gene', '6390', (249, 272)) ('neck paragangliomas', 'Disease', (142, 161)) ('Tinnitus', 'Phenotype', 'HP:0000360', (0, 8)) ('paragangliomas', 'Phenotype', 'HP:0002668', (147, 161)) ('Neck Paragangliomas', 'Disease', 'MESH:D010235', (49, 68)) ('SDH', 'Gene', (274, 277)) 27664 32133432 SDHAF2 mutation leads to the rare paraganglioma syndrome 2. ('leads to', 'Reg', (16, 24)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (34, 56)) ('SDHAF2', 'Gene', '54949', (0, 6)) ('paraganglioma', 'Phenotype', 'HP:0002668', (34, 47)) ('SDHAF2', 'Gene', (0, 6)) ('paraganglioma syndrome', 'Disease', (34, 56)) ('mutation', 'Var', (7, 15)) 27668 32133432 Genetic testing revealed a rare germline, loss-of-function mutation in the SDHAF2 gene, previously described to cause hereditary paraganglioma syndrome 2. ('paraganglioma', 'Phenotype', 'HP:0002668', (129, 142)) ('hereditary paraganglioma syndrome', 'Disease', (118, 151)) ('mutation', 'Var', (59, 67)) ('loss-of-function', 'NegReg', (42, 58)) ('SDHAF2', 'Gene', '54949', (75, 81)) ('hereditary paraganglioma syndrome', 'Disease', 'MESH:D061325', (118, 151)) ('SDHAF2', 'Gene', (75, 81)) 27677 32133432 The most common mutations are found in the succinate dehydrogenase (SDH) genes with the highest prevalence of mutations in SDHD, followed by SDHB and SDHC. ('SDHC', 'Gene', (150, 154)) ('SDH', 'Gene', (150, 153)) ('SDH', 'Gene', '6390', (141, 144)) ('SDH', 'Gene', (123, 126)) ('succinate dehydrogenase', 'Gene', (43, 66)) ('mutations', 'Var', (110, 119)) ('SDH', 'Gene', (68, 71)) ('SDHB', 'Gene', (141, 145)) ('SDHD', 'Gene', (123, 127)) ('SDHD', 'Gene', '6392', (123, 127)) ('SDHC', 'Gene', '6391', (150, 154)) ('SDH', 'Gene', (141, 144)) ('SDH', 'Gene', '6390', (150, 153)) ('SDH', 'Gene', '6390', (123, 126)) ('SDH', 'Gene', '6390', (68, 71)) ('SDHB', 'Gene', '6390', (141, 145)) ('succinate dehydrogenase', 'Gene', '6390', (43, 66)) 27679 32133432 The enzymes of the tricarboxylic acid cycle in general are considered tumor suppressors, and mutations in the corresponding genes are associated with tumorigenesis in different tissues. ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (19, 37)) ('associated', 'Reg', (134, 144)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('mutations', 'Var', (93, 102)) ('tumor', 'Disease', (70, 75)) ('tumor', 'Disease', 'MESH:D009369', (150, 155)) ('tumor', 'Phenotype', 'HP:0002664', (150, 155)) ('tumor', 'Disease', (150, 155)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) 27680 32133432 Several of the mutations associated with hereditary Pheo/PGL cause a disturbed cellular response to hypoxia, leading to a condition called pseudohypoxia. ('cause', 'Reg', (61, 66)) ('Pheo/PGL', 'Disease', (52, 60)) ('pseudohypoxia', 'Disease', (139, 152)) ('disturbed', 'Reg', (69, 78)) ('mutations', 'Var', (15, 24)) ('Pheo/PGL', 'Disease', 'MESH:D010673', (52, 60)) ('leading to', 'Reg', (109, 119)) ('pseudohypoxia', 'Disease', 'None', (139, 152)) ('hypoxia', 'Disease', 'MESH:D000860', (100, 107)) ('hypoxia', 'Disease', (145, 152)) ('hypoxia', 'Disease', 'MESH:D000860', (145, 152)) ('hypoxia', 'Disease', (100, 107)) 27692 32133432 DNA from peripheral blood (leukocytes) was isolated and targeted next-generation sequencing of 27 (neuro-)endocrine tumor-related (including the SDHx) genes revealed no pathogenic mutation in the SDHD and SDHC genes but a germline mutation in the SDHAF2 gene (NM_017841.2; c.232G>A). ('tumor', 'Disease', (116, 121)) ('SDHAF2', 'Gene', '54949', (247, 253)) ('c.232G>A', 'SUBSTITUTION', 'None', (273, 281)) ('NM_017841.2', 'Var', (260, 271)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (106, 121)) ('tumor', 'Disease', 'MESH:D009369', (116, 121)) ('SDHD', 'Gene', '6392', (196, 200)) ('SDHC', 'Gene', (205, 209)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('SDHD', 'Gene', (196, 200)) ('SDHC', 'Gene', '6391', (205, 209)) ('c.232G>A', 'Var', (273, 281)) ('SDHx', 'Chemical', '-', (145, 149)) ('SDHAF2', 'Gene', (247, 253)) 27699 32133432 Immunohistochemical staining for SDHB was negative; this investigation is a reasonable first screening, as a loss of SDHB expression is seen in the case of any SDHx mutation, but not in other hereditary tumor syndromes. ('SDHx', 'Chemical', '-', (160, 164)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('SDHB', 'Gene', (117, 121)) ('expression', 'MPA', (122, 132)) ('hereditary tumor syndrome', 'Disease', 'MESH:D009386', (192, 217)) ('SDHB', 'Gene', '6390', (33, 37)) ('loss', 'NegReg', (109, 113)) ('mutation', 'Var', (165, 173)) ('SDHB', 'Gene', (33, 37)) ('hereditary tumor syndrome', 'Disease', (192, 217)) ('SDHB', 'Gene', '6390', (117, 121)) ('SDHx', 'Gene', (160, 164)) 27700 32133432 He was found to have a germline, missense mutation of the SDHAF2 gene on chromosome 11 in position 12.2 at site 232 with an exchange of guanine to adenine (11q12.2 c232 G>A). ('11q12.2 c232 G>A', 'Var', (156, 172)) ('adenine', 'Chemical', 'MESH:D000225', (147, 154)) ('SDHAF2', 'Gene', '54949', (58, 64)) ('SDHAF2', 'Gene', (58, 64)) ('guanine', 'Chemical', 'MESH:D006147', (136, 143)) 27701 32133432 This mutation is known to cause a loss of SDHAF2 function, leading to the hereditary paraganglioma syndrome 2 (PGL2), first discovered in 1982 by van Baars et al. ('paraganglioma', 'Phenotype', 'HP:0002668', (85, 98)) ('hereditary paraganglioma syndrome', 'Disease', 'MESH:D061325', (74, 107)) ('SDHAF2', 'Gene', (42, 48)) ('SDHAF2', 'Gene', '54949', (42, 48)) ('hereditary paraganglioma syndrome', 'Disease', (74, 107)) ('mutation', 'Var', (5, 13)) 27703 32133432 3, it inserts Flavin adenine dinucleotide (FAD) into SDHA, a step necessary for a fully functional and stable SDH complex. ('SDH', 'Gene', (53, 56)) ('SDH', 'Gene', '6390', (110, 113)) ('FAD', 'Chemical', 'MESH:D005182', (43, 46)) ('SDHA', 'Gene', '6389', (53, 57)) ('SDH', 'Gene', '6390', (53, 56)) ('Flavin adenine dinucleotide', 'Chemical', 'MESH:D005182', (14, 41)) ('SDH', 'Gene', (110, 113)) ('inserts', 'Var', (6, 13)) ('SDHA', 'Gene', (53, 57)) 27720 32133432 According to the particular mutation and its specific tumor risk, the imaging modality and the examined body region can be adapted. ('tumor', 'Disease', (54, 59)) ('mutation', 'Var', (28, 36)) ('tumor', 'Disease', 'MESH:D009369', (54, 59)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) 27721 32133432 Because there is only a small number of PGL2 patients, the recommendations for patients with SDHD mutation can be applied, for instance an MRI of the head and neck region every 18 months and 3 yearly an MRI scans from head to pelvis. ('SDHD', 'Gene', (93, 97)) ('mutation', 'Var', (98, 106)) ('patients', 'Species', '9606', (45, 53)) ('patients', 'Species', '9606', (79, 87)) ('SDHD', 'Gene', '6392', (93, 97)) 27767 31275775 Resection usually leads to resolution of diabetes unless other predisposing factors are present. ('Resection', 'Var', (0, 9)) ('diabetes', 'Disease', 'MESH:D003920', (41, 49)) ('resolution', 'Disease', (27, 37)) ('diabetes', 'Disease', (41, 49)) 27774 31275775 Sagalowsky indicated that preoperative alpha-blockade without concomitant beta-blockade may predispose to hypoglycemia following tumor removal. ('hypoglycemia following tumor removal', 'Disease', (106, 142)) ('predispose to hypoglycemia', 'Phenotype', 'HP:0001988', (92, 118)) ('hypoglycemia following tumor removal', 'Disease', 'MESH:D007003', (106, 142)) ('hypoglycemia', 'Phenotype', 'HP:0001943', (106, 118)) ('predispose', 'Reg', (92, 102)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('alpha-blockade', 'Var', (39, 53)) 27849 31211069 The largest study comparing marker-negative and marker-positive patients showed that the most common symptom in marker-positive patients was sustained hypertension (49%), versus abdominal/flank pain (57%) in marker-negative patients. ('patients', 'Species', '9606', (64, 72)) ('hypertension', 'Disease', 'MESH:D006973', (151, 163)) ('pain', 'Phenotype', 'HP:0012531', (194, 198)) ('flank pain', 'Phenotype', 'HP:0030157', (188, 198)) ('hypertension', 'Phenotype', 'HP:0000822', (151, 163)) ('flank pain', 'Disease', (188, 198)) ('patients', 'Species', '9606', (224, 232)) ('hypertension', 'Disease', (151, 163)) ('patients', 'Species', '9606', (128, 136)) ('marker-positive', 'Var', (112, 127)) ('flank pain', 'Disease', 'MESH:D021501', (188, 198)) 27903 30963018 The incidence of familial paragangliomas is approximately 10%, and about 30% of them are caused by mutations in succinate dehydrogenase (SDH) gene. ('paraganglioma', 'Phenotype', 'HP:0002668', (26, 39)) ('paragangliomas', 'Phenotype', 'HP:0002668', (26, 40)) ('familial paragangliomas', 'Disease', 'MESH:D010235', (17, 40)) ('SDH', 'Gene', (137, 140)) ('caused by', 'Reg', (89, 98)) ('mutations', 'Var', (99, 108)) ('SDH', 'Gene', '6390', (137, 140)) ('familial paragangliomas', 'Disease', (17, 40)) ('succinate dehydrogenase', 'Gene', (112, 135)) ('succinate dehydrogenase', 'Gene', '6390', (112, 135)) 27906 30963018 None of our patients was tested for SDH mutations, as this was not routinely performed in our unit during that period. ('SDH', 'Gene', '6390', (36, 39)) ('mutations', 'Var', (40, 49)) ('patients', 'Species', '9606', (12, 20)) ('SDH', 'Gene', (36, 39)) 27940 30963018 In the same session, balloon occlusion of the internal carotid artery can be performed to determine if the patient can tolerate blockage of the vessel in case of ligation, clamping, or shunting. ('clamping', 'Var', (172, 180)) ('patient', 'Species', '9606', (107, 114)) ('balloon occlusion', 'Disease', 'MESH:D054549', (21, 38)) ('balloon occlusion', 'Disease', (21, 38)) 27944 27838885 Pathological and genetic characterization of bilateral adrenomedullary hyperplasia in a patient with germline MAX mutation In recent years, familial pheochromocytoma (PHEO) with germline mutations in the MAX (MYC Associated Factor X) gene has been reported in a few cases. ('MAX', 'Gene', '4149', (204, 207)) ('patient', 'Species', '9606', (88, 95)) ('bilateral adrenomedullary hyperplasia', 'Disease', 'MESH:D006965', (45, 82)) ('bilateral adrenomedullary hyperplasia', 'Disease', (45, 82)) ('MYC Associated Factor X', 'Gene', (209, 232)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (149, 165)) ('MAX', 'Gene', '4149', (110, 113)) ('MAX', 'Gene', (110, 113)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (140, 165)) ('germline mutations', 'Var', (178, 196)) ('familial pheochromocytoma', 'Disease', (140, 165)) ('MAX', 'Gene', (204, 207)) ('PHEO', 'Phenotype', 'HP:0002666', (167, 171)) ('MYC Associated Factor X', 'Gene', '4149', (209, 232)) 27945 27838885 Here we investigated a 25 years old patient with multiple PHEOs associated with a non-sense germline MAX mutation. ('associated', 'Reg', (64, 74)) ('PHEO', 'Phenotype', 'HP:0002666', (58, 62)) ('PHEOs', 'Phenotype', 'HP:0002666', (58, 63)) ('MAX', 'Gene', (101, 104)) ('MAX', 'Gene', '4149', (101, 104)) ('patient', 'Species', '9606', (36, 43)) ('non-sense', 'Var', (82, 91)) 27950 27838885 Nevertheless, immunohistochemistry demonstrated loss of protein MAX expression in all samples including diffuse hyperplasia, suggesting a causative role of MAX mutation for both PHEOs and AMH. ('loss', 'NegReg', (48, 52)) ('PHEO', 'Phenotype', 'HP:0002666', (178, 182)) ('mutation', 'Var', (160, 168)) ('hyperplasia', 'Disease', 'MESH:D006965', (112, 123)) ('expression', 'MPA', (68, 78)) ('PHEOs', 'Phenotype', 'HP:0002666', (178, 183)) ('protein', 'Protein', (56, 63)) ('MAX', 'Gene', (156, 159)) ('AMH', 'Phenotype', 'HP:0008239', (188, 191)) ('hyperplasia', 'Disease', (112, 123)) ('MAX', 'Gene', '4149', (156, 159)) ('MAX', 'Gene', '4149', (64, 67)) ('MAX', 'Gene', (64, 67)) 27954 27838885 Patients with bilateral PHEOs and/or family history, carry germline mutations in most cases. ('Patients', 'Species', '9606', (0, 8)) ('PHEOs', 'Phenotype', 'HP:0002666', (24, 29)) ('bilateral PHEOs', 'Disease', (14, 29)) ('germline mutations', 'Var', (59, 77)) ('PHEO', 'Phenotype', 'HP:0002666', (24, 28)) 27955 27838885 Hereditary PHEO primarily develops in the context of several familial tumor syndromes: von Hippel-Lindau disease (VHL), Multiple Endocrine Neoplasia type 2 (MEN2), Neurofibromatosis 1 (NF1), respectively due to mutation in the VHL, RET or NF1 genes, or familial PPGL associated with mutations in one of the genes encoding for the succinate dehydrogenase complex (SDHA-D, collectively named SDHx). ('NF1', 'Gene', (239, 242)) ('Neurofibromatosis 1', 'Gene', '4763', (164, 183)) ('Multiple Endocrine Neoplasia type 2', 'Disease', 'MESH:D018813', (120, 155)) ('VHL', 'Disease', (227, 230)) ('VHL', 'Disease', (114, 117)) ('familial tumor', 'Disease', (61, 75)) ('Neoplasia', 'Phenotype', 'HP:0002664', (139, 148)) ('RET', 'Gene', (232, 235)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('SDHA-D', 'Gene', (363, 369)) ('Multiple Endocrine Neoplasia type 2', 'Disease', (120, 155)) ('associated', 'Reg', (267, 277)) ('familial tumor', 'Disease', 'MESH:D009386', (61, 75)) ('PHEO', 'Phenotype', 'HP:0002666', (11, 15)) ('Endocrine Neoplasia', 'Phenotype', 'HP:0100568', (129, 148)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (87, 112)) ('mutations', 'Var', (283, 292)) ('VHL', 'Disease', 'MESH:D006623', (227, 230)) ('VHL', 'Disease', 'MESH:D006623', (114, 117)) ('NF1', 'Gene', '4763', (185, 188)) ('SDHx', 'Chemical', '-', (390, 394)) ('von Hippel-Lindau disease', 'Disease', (87, 112)) ('Neurofibromatosis 1', 'Gene', (164, 183)) ('mutation', 'Var', (211, 219)) ('NF1', 'Gene', '4763', (239, 242)) ('RET', 'Gene', '5979', (232, 235)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (164, 181)) ('NF1', 'Gene', (185, 188)) ('familial', 'Disease', (253, 261)) 27956 27838885 Diffuse and nodular adrenal medullary hyperplasia (AMH) has been described as a precursor of PHEO in MEN2 as well as familial PPGL due to mutation in SDHB . ('PHEO', 'Phenotype', 'HP:0002666', (93, 97)) ('adrenal medullary hyperplasia', 'Phenotype', 'HP:0008239', (20, 49)) ('nodular adrenal medullary hyperplasia', 'Disease', (12, 49)) ('SDHB', 'Gene', '6390', (150, 154)) ('nodular adrenal medullary hyperplasia', 'Disease', 'MESH:D020518', (12, 49)) ('SDHB', 'Gene', (150, 154)) ('due to', 'Reg', (131, 137)) ('mutation', 'Var', (138, 146)) ('Diffuse', 'Disease', (0, 7)) ('AMH', 'Phenotype', 'HP:0008239', (51, 54)) ('familial PPGL', 'Disease', (117, 130)) 27958 27838885 In these cases there is a loss of MAX protein in the tumors most often caused by Loss-of-Heterozygosity (LOH), deleting the wild-type allele (uniparental disomy, partial deletions). ('deleting', 'NegReg', (111, 119)) ('MAX', 'Gene', '4149', (34, 37)) ('MAX', 'Gene', (34, 37)) ('tumors', 'Disease', 'MESH:D009369', (53, 59)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('uniparental disomy', 'Disease', (142, 160)) ('loss', 'NegReg', (26, 30)) ('tumors', 'Phenotype', 'HP:0002664', (53, 59)) ('Loss-of-Heterozygosity', 'Var', (81, 103)) ('tumors', 'Disease', (53, 59)) ('uniparental disomy', 'Disease', 'MESH:D024182', (142, 160)) 27960 27838885 This brief report first described a patient with MAX germline mutation causing both bilateral PHEOs and nodular or diffuse AMH with an extensive histopathological and molecular analysis. ('germline mutation', 'Var', (53, 70)) ('MAX', 'Gene', (49, 52)) ('MAX', 'Gene', '4149', (49, 52)) ('nodular', 'Disease', (104, 111)) ('PHEO', 'Phenotype', 'HP:0002666', (94, 98)) ('bilateral PHEOs', 'Disease', (84, 99)) ('AMH', 'Phenotype', 'HP:0008239', (123, 126)) ('causing', 'Reg', (71, 78)) ('PHEOs', 'Phenotype', 'HP:0002666', (94, 99)) ('patient', 'Species', '9606', (36, 43)) 27961 27838885 A 25-year old asymptomatic adopted Caucasian man with no relevant background medical history had been screened in 2013 for a hereditary mutation of the MAX gene. ('man', 'Species', '9606', (45, 48)) ('mutation', 'Var', (136, 144)) ('MAX', 'Gene', '4149', (152, 155)) ('MAX', 'Gene', (152, 155)) 27964 27838885 The genetic test was positive for a non-sense heterozygous mutation in MAX (c.97C>T, p.Arg33* ; NM_002382.3 ; primers available upon request) previously reported in one study. ('p.Arg33*', 'SUBSTITUTION', 'None', (85, 93)) ('c.97C>T', 'Mutation', 'rs387906651', (76, 83)) ('positive', 'Reg', (21, 29)) ('c.97C>T', 'Var', (76, 83)) ('MAX', 'Gene', (71, 74)) ('p.Arg33*', 'Var', (85, 93)) ('MAX', 'Gene', '4149', (71, 74)) 27990 27838885 Since the protein MAX antagonizes MYC activity, ablation of MAX's transcriptional repression of MYC could lead to MYC-dependent cell transformation . ('MYC', 'Gene', (34, 37)) ('MYC', 'Gene', (96, 99)) ('MAX', 'Gene', '4149', (18, 21)) ('MAX', 'Gene', (18, 21)) ('MYC', 'Gene', (114, 117)) ('MYC', 'Gene', '4609', (34, 37)) ('lead to', 'Reg', (106, 113)) ('MYC', 'Gene', '4609', (96, 99)) ('ablation', 'Var', (48, 56)) ('MAX', 'Gene', '4149', (60, 63)) ('MAX', 'Gene', (60, 63)) ('MYC', 'Gene', '4609', (114, 117)) 27992 27838885 The non-sense heterozygous MAX mutation found in our patient leads to a premature stop codon with subsequent degradation of the mRNA transcript or a truncated protein with complete disruption of the MAX/MYC interaction (Supplemental Figure 1). ('MAX', 'Gene', (27, 30)) ('MAX', 'Gene', '4149', (199, 202)) ('MAX', 'Gene', (199, 202)) ('MYC', 'Gene', (203, 206)) ('MAX', 'Gene', '4149', (27, 30)) ('mutation', 'Var', (31, 39)) ('degradation', 'MPA', (109, 120)) ('MYC', 'Gene', '4609', (203, 206)) ('mRNA transcript', 'MPA', (128, 143)) ('patient', 'Species', '9606', (53, 60)) 27993 27838885 The largest screening study performed on 1,694 PPGL patients without mutations in major susceptibility genes has reported pathogenic MAX mutations in 1.3% of patients with a mean age of occurrence of 32 years. ('mutations', 'Var', (137, 146)) ('pathogenic', 'Reg', (122, 132)) ('patients', 'Species', '9606', (158, 166)) ('MAX', 'Gene', '4149', (133, 136)) ('MAX', 'Gene', (133, 136)) ('patients', 'Species', '9606', (52, 60)) 28007 27838885 It has been reported that tumors carrying truncating MAX mutations can be identified on the basis of a negative immunohistochemical staining for MAX. ('MAX', 'Gene', '4149', (145, 148)) ('MAX', 'Gene', (145, 148)) ('tumors', 'Phenotype', 'HP:0002664', (26, 32)) ('mutations', 'Var', (57, 66)) ('MAX', 'Gene', (53, 56)) ('tumors', 'Disease', 'MESH:D009369', (26, 32)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('MAX', 'Gene', '4149', (53, 56)) ('tumors', 'Disease', (26, 32)) 28034 16119530 In the molecular genetic analysis for MEN2A, direct mutation analysis showed that he was not a carrier of a mutation in exon 11, which includes codon 634 of the RET proto-oncogene. ('RET', 'Gene', '5979', (161, 164)) ('MEN2A', 'Gene', '5979', (38, 43)) ('MEN2A', 'Gene', (38, 43)) ('RET', 'Gene', (161, 164)) ('codon 634', 'Var', (144, 153)) ('mutation in', 'Var', (108, 119)) 28050 16119530 Data from the international RET consortium indicates that the preponderance of MEN2A mutations are in codon 634. ('MEN2A', 'Gene', (79, 84)) ('RET', 'Gene', '5979', (28, 31)) ('MEN2A', 'Gene', '5979', (79, 84)) ('mutations', 'Var', (85, 94)) ('RET', 'Gene', (28, 31)) 28051 16119530 In 20 cases from 74 families, 97% had RET mutations with 87% having a mutation at codon 634, 6.4% at codon 918, 3.5% at codon 618, 2.1% at codon 611 and 0% at codon 918. ('RET', 'Gene', (38, 41)) ('RET', 'Gene', '5979', (38, 41)) ('codon 918', 'Var', (101, 110)) 28215 25143914 found that younger age at presentation was significantly associated with germline mutations of MEN2 and VHL. ('VHL', 'Disease', 'MESH:D006623', (104, 107)) ('germline mutations', 'Var', (73, 91)) ('MEN2', 'Gene', (95, 99)) ('VHL', 'Disease', (104, 107)) 28216 25143914 found that younger age was associated with the VHL missense mutation. ('missense mutation', 'Var', (51, 68)) ('VHL', 'Disease', 'MESH:D006623', (47, 50)) ('VHL', 'Disease', (47, 50)) 28244 22988529 Physical examination revealed severe hypertension (240/150 mmHg), tachycardia (150 bpm), and diaphoresis. ('240/150 mmHg', 'Var', (51, 63)) ('tachycardia', 'Phenotype', 'HP:0001649', (66, 77)) ('hypertension', 'Disease', (37, 49)) ('diaphoresis', 'Phenotype', 'HP:0000975', (93, 104)) ('tachycardia', 'Disease', (66, 77)) ('hypertension', 'Phenotype', 'HP:0000822', (37, 49)) ('tachycardia', 'Disease', 'MESH:D013610', (66, 77)) ('diaphoresis', 'Disease', (93, 104)) ('hypertension', 'Disease', 'MESH:D006973', (37, 49)) 28261 22988529 This resulted in a marked decrease in plasma CgA (1531 mug/L) (Figure 5) and 24-hour urine excretion of VMA (202 mumol/d) and total free CATH and Metanephrines (102074 nmol/d) (Figure 6). ('decrease', 'NegReg', (26, 34)) ('CgA', 'Gene', (45, 48)) ('CgA', 'Gene', '1113', (45, 48)) ('102074 nmol/d', 'Var', (161, 174)) 28371 22629039 Hematological analysis confirmed normocytic anemia with hemoglobin 11.3 gm/dl, a raised erythrocyte sedimentation rate (ESR) (130 mm fall in the first hour), while the total and differential leukocyte counts were normal. ('raised erythrocyte', 'Phenotype', 'HP:0001901', (81, 99)) ('fall', 'Phenotype', 'HP:0002527', (133, 137)) ('normocytic anemia', 'Phenotype', 'HP:0001897', (33, 50)) ('anemia', 'Disease', (44, 50)) ('raised', 'PosReg', (81, 87)) ('anemia', 'Disease', 'MESH:D000740', (44, 50)) ('raised erythrocyte sedimentation', 'Phenotype', 'HP:0003565', (81, 113)) ('hemoglobin', 'Var', (56, 66)) ('anemia', 'Phenotype', 'HP:0001903', (44, 50)) ('erythrocyte sedimentation rate', 'MPA', (88, 118)) 28482 33247676 Only those curves are presented herein which showed significant differences in overall survival (p<0.05) of patients with high cut-off values compared to those with low cut-off values. ('patients', 'Species', '9606', (108, 116)) ('high cut-off values', 'Var', (122, 141)) ('differences', 'Reg', (64, 75)) 28492 33247676 For mutation, it provides mutation ID, details of genetic change, protein change, type of mutation and its VEP impact across all available TCGA tumour data sets. ('tumour', 'Disease', 'MESH:D009369', (144, 150)) ('tumour', 'Disease', (144, 150)) ('tumour', 'Phenotype', 'HP:0002664', (144, 150)) ('mutation', 'Var', (26, 34)) 28528 33247676 TC2N mutation profile in pan-cancer Our analyses show several frequent somatic mutations in TC2N gene in various cancers. ('cancer', 'Disease', 'MESH:D009369', (114, 120)) ('cancers', 'Disease', 'MESH:D009369', (114, 121)) ('cancer', 'Disease', (29, 35)) ('cancers', 'Phenotype', 'HP:0002664', (114, 121)) ('cancers', 'Disease', (114, 121)) ('mutations', 'Var', (80, 89)) ('TC2N', 'Gene', '123036', (0, 4)) ('cancer', 'Phenotype', 'HP:0002664', (29, 35)) ('TC2N', 'Gene', (0, 4)) ('cancer', 'Phenotype', 'HP:0002664', (114, 120)) ('TC2N', 'Gene', '123036', (93, 97)) ('TC2N', 'Gene', (93, 97)) ('cancer', 'Disease', 'MESH:D009369', (29, 35)) ('cancer', 'Disease', (114, 120)) 28529 33247676 A total of 142 mutations were identified across 145 cases in a total of 18 TCGA tumour types. ('tumour', 'Disease', (80, 86)) ('TCGA', 'Disease', (75, 79)) ('mutations', 'Var', (15, 24)) ('tumour', 'Phenotype', 'HP:0002664', (80, 86)) ('tumour', 'Disease', 'MESH:D009369', (80, 86)) ('identified', 'Reg', (30, 40)) 28530 33247676 Highest pathogenic mutation rates of TC2N were present in SKCM, UCEC, COAD, BLCA and BRCA (Table 3). ('BLCA', 'Disease', (76, 80)) ('COAD', 'Disease', 'MESH:D029424', (70, 74)) ('BRCA', 'Gene', (85, 89)) ('mutation', 'Var', (19, 27)) ('pathogenic', 'Reg', (8, 18)) ('TC2N', 'Gene', (37, 41)) ('BRCA', 'Gene', '672;675', (85, 89)) ('UCEC', 'Disease', (64, 68)) ('COAD', 'Disease', (70, 74)) ('TC2N', 'Gene', '123036', (37, 41)) ('SKCM', 'Disease', (58, 62)) 28541 33247676 Promoter hypermethylation is a key feature for transcriptional silencing of several genes in cancer (Park, 2010). ('cancer', 'Disease', (93, 99)) ('cancer', 'Disease', 'MESH:D009369', (93, 99)) ('cancer', 'Phenotype', 'HP:0002664', (93, 99)) ('Promoter hypermethylation', 'Var', (0, 25)) 28542 33247676 In particular, tumour suppressor genes are silenced via hypermethylation in several caners (Nag and Yu, 2015). ('tumour', 'Disease', 'MESH:D009369', (15, 21)) ('tumour', 'Disease', (15, 21)) ('hypermethylation', 'Var', (56, 72)) ('Nag', 'Gene', (92, 95)) ('silenced', 'NegReg', (43, 51)) ('Nag', 'Gene', '51594', (92, 95)) ('tumour', 'Phenotype', 'HP:0002664', (15, 21)) 28543 33247676 We also found TC2N promoter hypomethylation in HNSC and KIRC. ('TC2N', 'Gene', (14, 18)) ('hypomethylation', 'Var', (28, 43)) ('TC2N', 'Gene', '123036', (14, 18)) 28544 33247676 There are evidence that hypomethylation may lead to increased genomic stability that may contribute towards carcinogenesis (Pfeifer, 2018). ('increased', 'PosReg', (52, 61)) ('genomic stability', 'CPA', (62, 79)) ('contribute', 'Reg', (89, 99)) ('hypomethylation', 'Var', (24, 39)) ('carcinogenesis', 'Disease', 'MESH:D063646', (108, 122)) ('carcinogenesis', 'Disease', (108, 122)) 28545 33247676 Moreover, DNA hypomethylation also leads to overexpression of proinvasive, antiapoptotic and angiogenic factors in prostate cancer (Vestergaar et al., 2010). ('prostate cancer', 'Disease', (115, 130)) ('hypomethylation', 'Var', (14, 29)) ('overexpression', 'PosReg', (44, 58)) ('cancer', 'Phenotype', 'HP:0002664', (124, 130)) ('prostate cancer', 'Disease', 'MESH:D011471', (115, 130)) ('prostate cancer', 'Phenotype', 'HP:0012125', (115, 130)) ('DNA', 'Var', (10, 13)) 28546 33247676 In summary, TC2N promoter hyper and hypo-methylation are important findings of this study demanding further exploration. ('TC2N', 'Gene', '123036', (12, 16)) ('hyper', 'Var', (26, 31)) ('hypo-methylation', 'Var', (36, 52)) ('TC2N', 'Gene', (12, 16)) 28555 33247676 In a recent study that recruited 28 highly-aggregated-extended-highrisk-familial-lung-cancer (HRFLC) families, highest cluster of genetic variants associated with lung cancer were identified within CATSPERB gene (14q32) (Musolf et al., 2019). ('cancer', 'Phenotype', 'HP:0002664', (168, 174)) ('lung cancer', 'Disease', 'MESH:D008175', (163, 174)) ('associated', 'Reg', (147, 157)) ('familial-lung-cancer', 'Disease', (72, 92)) ('cancer', 'Phenotype', 'HP:0002664', (86, 92)) ('CATSPERB', 'Gene', (198, 206)) ('variants', 'Var', (138, 146)) ('familial-lung-cancer', 'Disease', 'MESH:D008175', (72, 92)) ('lung cancer', 'Phenotype', 'HP:0100526', (163, 174)) ('lung cancer', 'Disease', (163, 174)) ('CATSPERB', 'Gene', '79820', (198, 206)) 28559 33247676 We identified a range of genetic alterations in the TC2N gene in several cancers. ('cancers', 'Disease', (73, 80)) ('cancer', 'Phenotype', 'HP:0002664', (73, 79)) ('TC2N', 'Gene', '123036', (52, 56)) ('cancers', 'Phenotype', 'HP:0002664', (73, 80)) ('TC2N', 'Gene', (52, 56)) ('cancers', 'Disease', 'MESH:D009369', (73, 80)) ('genetic alterations', 'Var', (25, 44)) 28560 33247676 The highest pathogenic non-synonymous mutation rates were observed in SKCM, UCEC, COAD, BLCA and BRCA. ('COAD', 'Disease', (82, 86)) ('UCEC', 'Disease', (76, 80)) ('non-synonymous mutation', 'Var', (23, 46)) ('BLCA', 'Disease', (88, 92)) ('pathogenic', 'Reg', (12, 22)) ('SKCM', 'Disease', (70, 74)) ('COAD', 'Disease', 'MESH:D029424', (82, 86)) ('BRCA', 'Gene', (97, 101)) ('BRCA', 'Gene', '672;675', (97, 101)) 28561 33247676 Whether these genetic mutations are causative or a sequel of cancer processes needs to be investigated. ('genetic mutations', 'Var', (14, 31)) ('cancer', 'Phenotype', 'HP:0002664', (61, 67)) ('cancer', 'Disease', (61, 67)) ('cancer', 'Disease', 'MESH:D009369', (61, 67)) 28562 33247676 It is important to note that cancer cells are susceptible to accumulate several mutations for multiple reasons such as increased cellular turnover, inflammatory tumour microenvironment, altered metabolic wiring, increased reactive oxygen species, increased susceptibility to DNA damage and decreased capacity of DNA damage repair amongst others (Loeb and Loeb, 2000; Hanahan and Weinberg, 2011; Fouad and Anani, 2017). ('decreased', 'NegReg', (290, 299)) ('oxygen', 'Chemical', 'MESH:D010100', (231, 237)) ('cancer', 'Disease', (29, 35)) ('susceptibility', 'MPA', (257, 271)) ('mutations', 'Var', (80, 89)) ('increased reactive oxygen species', 'Phenotype', 'HP:0025464', (212, 245)) ('metabolic wiring', 'CPA', (194, 210)) ('tumour', 'Phenotype', 'HP:0002664', (161, 167)) ('tumour', 'Disease', 'MESH:D009369', (161, 167)) ('cancer', 'Phenotype', 'HP:0002664', (29, 35)) ('altered', 'Reg', (186, 193)) ('tumour', 'Disease', (161, 167)) ('increased', 'PosReg', (212, 221)) ('cancer', 'Disease', 'MESH:D009369', (29, 35)) ('reactive oxygen species', 'MPA', (222, 245)) ('increased', 'PosReg', (119, 128)) ('cellular turnover', 'CPA', (129, 146)) 28571 31350093 Update on mutations in the HIF: EPO pathway and their role in erythrocytosis Identification of the underlying defects in congenital erythrocytosis has provided mechanistic insights into the regulation of erythropoiesis and oxygen homeostasis. ('erythrocytosis', 'Disease', (62, 76)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (132, 146)) ('congenital erythrocytosis', 'Disease', 'MESH:C536842', (121, 146)) ('erythrocytosis', 'Disease', 'MESH:D011086', (62, 76)) ('EPO', 'Gene', (32, 35)) ('oxygen', 'Chemical', 'MESH:D010100', (223, 229)) ('erythrocytosis', 'Disease', 'MESH:D011086', (132, 146)) ('erythrocytosis', 'Disease', (132, 146)) ('congenital erythrocytosis', 'Disease', (121, 146)) ('mutations', 'Var', (10, 19)) ('EPO', 'Gene', '2056', (32, 35)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (62, 76)) 28576 31350093 Loss of function mutations in PHD2 and VHL, as well as gain of function mutations in HIF-2alpha and EPOR, are well established causes of erythrocytosis. ('EPOR', 'Gene', '2057', (100, 104)) ('mutations', 'Var', (72, 81)) ('erythrocytosis', 'Disease', 'MESH:D011086', (137, 151)) ('VHL', 'Gene', (39, 42)) ('PHD2', 'Gene', (30, 34)) ('Loss', 'NegReg', (0, 4)) ('VHL', 'Gene', '7428', (39, 42)) ('HIF-2alpha', 'Gene', (85, 95)) ('HIF-2alpha', 'Gene', '2034', (85, 95)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (137, 151)) ('gain of function', 'PosReg', (55, 71)) ('mutations', 'Var', (17, 26)) ('erythrocytosis', 'Disease', (137, 151)) ('EPOR', 'Gene', (100, 104)) 28578 31350093 Specifically, novel mutations have been identified that either change amino acids in the zinc finger domain of PHD2 or alter splicing of the VHL gene. ('VHL', 'Gene', '7428', (141, 144)) ('VHL', 'Gene', (141, 144)) ('alter', 'Reg', (119, 124)) ('change', 'Reg', (63, 69)) ('amino acids in the zinc finger domain', 'MPA', (70, 107)) ('splicing', 'MPA', (125, 133)) ('mutations', 'Var', (20, 29)) ('PHD2', 'Gene', (111, 115)) 28579 31350093 In addition, continued study of HIF-2alpha mutations has revealed a distinctive genotype-phenotype correlation. ('mutations', 'Var', (43, 52)) ('HIF-2alpha', 'Gene', (32, 42)) ('HIF-2alpha', 'Gene', '2034', (32, 42)) 28591 31350093 Primary erythrocytosis can be due to defects in the JAK2 or EPOR genes. ('due', 'Reg', (30, 33)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (8, 22)) ('Primary erythrocytosis', 'Disease', 'MESH:D011086', (0, 22)) ('EPOR', 'Gene', '2057', (60, 64)) ('JAK2', 'Gene', '3717', (52, 56)) ('EPOR', 'Gene', (60, 64)) ('defects', 'Var', (37, 44)) ('JAK2', 'Gene', (52, 56)) ('Primary erythrocytosis', 'Disease', (0, 22)) 28594 31350093 These causes include mutations in genes that affect hemoglobin function, such as those encoding for hemoglobin alpha (HBA), hemoglobin beta (HBB), or 2,3-bisphosphoglycerate mutase (BPGM), which synthesizes BPG, a metabolite that decreases hemoglobin affinity for oxygen. ('decreases', 'NegReg', (230, 239)) ('HBB', 'Gene', '3043', (141, 144)) ('HBA', 'Gene', (118, 121)) ('BPGM', 'Gene', '669', (182, 186)) ('hemoglobin beta', 'Gene', (124, 139)) ('hemoglobin beta', 'Gene', '3043', (124, 139)) ('HBB', 'Gene', (141, 144)) ('hemoglobin affinity for oxygen', 'MPA', (240, 270)) ('BPG', 'Chemical', '-', (207, 210)) ('2,3-bisphosphoglycerate mutase', 'Gene', '669', (150, 180)) ('BPG', 'Chemical', '-', (182, 185)) ('BPGM', 'Gene', (182, 186)) ('oxygen', 'Chemical', 'MESH:D010100', (264, 270)) ('causes', 'Reg', (6, 12)) ('decreases hemoglobin affinity', 'Phenotype', 'HP:0020062', (230, 259)) ('decreases hemoglobin', 'Phenotype', 'HP:0001903', (230, 250)) ('mutations', 'Var', (21, 30)) 28595 31350093 The end result of these mutations is increased hemoglobin affinity for oxygen. ('hemoglobin affinity for oxygen', 'MPA', (47, 77)) ('increased hemoglobin', 'Phenotype', 'HP:0001900', (37, 57)) ('increased', 'PosReg', (37, 46)) ('mutations', 'Var', (24, 33)) ('oxygen', 'Chemical', 'MESH:D010100', (71, 77)) ('increased hemoglobin affinity', 'Phenotype', 'HP:0004825', (37, 66)) 28597 31350093 However, it should be recognized that certain forms of secondary erythrocytosis, such as that due to PHD2 mutations, can be associated with normal EPO levels. ('PHD2', 'Gene', (101, 105)) ('EPO levels', 'MPA', (147, 157)) ('secondary erythrocytosis', 'Disease', (55, 79)) ('mutations', 'Var', (106, 115)) ('secondary erythrocytosis', 'Disease', 'MESH:D011086', (55, 79)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (65, 79)) 28598 31350093 The evaluation of patients for erythrocytosis involves tests that include serum EPO measurements, imaging studies, oximetry, P50 measurements, and sequencing of candidate genes. ('P50', 'MPA', (125, 128)) ('erythrocytosis', 'Disease', 'MESH:D011086', (31, 45)) ('erythrocytosis', 'Disease', (31, 45)) ('men', 'Species', '9606', (91, 94)) ('patients', 'Species', '9606', (18, 26)) ('sequencing', 'Var', (147, 157)) ('men', 'Species', '9606', (136, 139)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (31, 45)) ('serum EPO measurements', 'MPA', (74, 96)) 28601 31350093 In pioneering work, de la Chapelle and colleagues carried out linkage analysis in a large family with known clinical and genealogical features, using a highly informative simple sequence repeat polymorphism in the 5' region of the EPOR gene. ('EPOR', 'Gene', '2057', (231, 235)) ('simple sequence repeat polymorphism in', 'Var', (171, 209)) ('EPOR', 'Gene', (231, 235)) 28602 31350093 They found a highly significant linkage pointing to a mutation in the EPOR as the most probable cause of the disease phenotype in the family. ('cause', 'Reg', (96, 101)) ('mutation', 'Var', (54, 62)) ('EPOR', 'Gene', '2057', (70, 74)) ('EPOR', 'Gene', (70, 74)) 28604 31350093 Other EPOR mutations have recently been reviewed elsewhere. ('EPOR', 'Gene', (6, 10)) ('mutations', 'Var', (11, 20)) ('EPOR', 'Gene', '2057', (6, 10)) 28605 31350093 This was the first disorder in humans to be ascribed to a mutation in either EPO or EPOR, and provided an impetus to uncover mutations in other genes that might be involved in erythrocytosis. ('erythrocytosis', 'Disease', 'MESH:D011086', (176, 190)) ('erythrocytosis', 'Disease', (176, 190)) ('EPOR', 'Gene', '2057', (84, 88)) ('EPOR', 'Gene', (84, 88)) ('EPO', 'Gene', (77, 80)) ('mutation', 'Var', (58, 66)) ('humans', 'Species', '9606', (31, 37)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (176, 190)) 28607 31350093 Erythrocytosis arising in sporadic patients and families with mutations in the genes encoding VHL, PHD2 and HIF-2alpha has provided important insights into their role in the hypoxia sensing pathway and as regulators of red cell mass in humans. ('HIF-2alpha', 'Gene', (108, 118)) ('VHL', 'Gene', '7428', (94, 97)) ('Erythrocytosis', 'Phenotype', 'HP:0001901', (0, 14)) ('hypoxia', 'Disease', (174, 181)) ('hypoxia', 'Disease', 'MESH:D000860', (174, 181)) ('humans', 'Species', '9606', (236, 242)) ('PHD2', 'Gene', (99, 103)) ('HIF-2alpha', 'Gene', '2034', (108, 118)) ('Erythrocytosis', 'Disease', (0, 14)) ('patients', 'Species', '9606', (35, 43)) ('Erythrocytosis', 'Disease', 'MESH:D011086', (0, 14)) ('mutations', 'Var', (62, 71)) ('VHL', 'Gene', (94, 97)) 28608 31350093 The first erythrocytosis-associated mutation in the pathway was identified in the VHL gene followed by a mutation in the PHD2 gene and subsequently by a mutation of the HIF2A (also known as EPAS1) gene in a family with hereditary erythrocytosis. ('PHD2', 'Gene', (121, 125)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (10, 24)) ('mutation', 'Var', (105, 113)) ('HIF2A', 'Gene', (169, 174)) ('erythrocytosis', 'Disease', (10, 24)) ('hereditary erythrocytosis', 'Disease', (219, 244)) ('mutation', 'Var', (36, 44)) ('EPAS1', 'Gene', (190, 195)) ('erythrocytosis', 'Disease', 'MESH:D011086', (10, 24)) ('VHL', 'Gene', (82, 85)) ('hereditary erythrocytosis', 'Disease', 'MESH:C536842', (219, 244)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (230, 244)) ('VHL', 'Gene', '7428', (82, 85)) ('EPAS1', 'Gene', '2034', (190, 195)) ('HIF2A', 'Gene', '2034', (169, 174)) ('erythrocytosis', 'Disease', (230, 244)) ('mutation', 'Var', (153, 161)) ('erythrocytosis', 'Disease', 'MESH:D011086', (230, 244)) 28612 31350093 In contrast, mice with homozygous knockout of the Phd1 or Phd3 genes are viable. ('mice', 'Species', '10090', (13, 17)) ('Phd3', 'Gene', (58, 62)) ('Phd3', 'Gene', '112407', (58, 62)) ('Phd1', 'Gene', '112406', (50, 54)) ('knockout', 'Var', (34, 42)) ('Phd1', 'Gene', (50, 54)) 28617 31350093 A mutation in the gene PHD2 in a family with erythrocytosis resulted in a marked decrease in PHD2 enzyme activity and segregated with phenotype. ('mutation', 'Var', (2, 10)) ('decrease', 'NegReg', (81, 89)) ('erythrocytosis', 'Disease', 'MESH:D011086', (45, 59)) ('erythrocytosis', 'Disease', (45, 59)) ('PHD2', 'Gene', (23, 27)) ('activity', 'MPA', (105, 113)) ('PHD2 enzyme', 'Enzyme', (93, 104)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (45, 59)) 28619 31350093 Peptide binding, enzymatic activity and HRE reporter gene studies pointed to a marked loss of PHD2 function arising from the P317R mutation (Fig. ('PHD2', 'Gene', (94, 98)) ('loss', 'NegReg', (86, 90)) ('function', 'MPA', (99, 107)) ('P317R', 'Mutation', 'rs80358193', (125, 130)) ('P317R', 'Var', (125, 130)) 28621 31350093 Familial erythrocytosis caused by mutations in the PHD2 gene has been designated as ECYT3 in the Mendelian Inheritance in Man classification (MIM) #: 609820. ('erythrocytosis', 'Phenotype', 'HP:0001901', (9, 23)) ('Familial erythrocytosis', 'Disease', (0, 23)) ('Familial erythrocytosis', 'Disease', 'MESH:C536842', (0, 23)) ('PHD2', 'Gene', (51, 55)) ('mutations', 'Var', (34, 43)) ('caused', 'Reg', (24, 30)) 28622 31350093 Subsequently, it was found that mice with acute global deletion of Phd2, but not Phd1 nor Phd3 display a dramatic erythrocytosis. ('Phd1', 'Gene', (81, 85)) ('Phd2', 'Gene', '112405', (67, 71)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (114, 128)) ('Phd3', 'Gene', (90, 94)) ('erythrocytosis', 'Disease', (114, 128)) ('mice', 'Species', '10090', (32, 36)) ('Phd3', 'Gene', '112407', (90, 94)) ('global deletion', 'Var', (48, 63)) ('erythrocytosis', 'Disease', 'MESH:D011086', (114, 128)) ('Phd1', 'Gene', '112406', (81, 85)) ('Phd2', 'Gene', (67, 71)) 28623 31350093 A mouse model for the P317R PHD2 mutation (P294R in the mouse) recapitulated the erythrocytosis and was consistent with haploinsufficiency as the mechanism for this particular mutation. ('P294R', 'Var', (43, 48)) ('haploinsufficiency', 'Disease', 'MESH:D058495', (120, 138)) ('P294R', 'Mutation', 'p.P294R', (43, 48)) ('mouse', 'Species', '10090', (56, 61)) ('P317R', 'Mutation', 'rs80358193', (22, 27)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (81, 95)) ('haploinsufficiency', 'Disease', (120, 138)) ('mouse', 'Species', '10090', (2, 7)) ('PHD2', 'Gene', (28, 32)) ('P317R', 'Var', (22, 27)) ('erythrocytosis', 'Disease', 'MESH:D011086', (81, 95)) ('erythrocytosis', 'Disease', (81, 95)) 28624 31350093 These studies have also revealed interesting aspects of the original P317R PHD2 mutant, namely, that it displays no activity towards the N-terminal oxygen dependent degradation domain (which contains one of the two sites of hydroxylation, Pro-402) of HIF-1alpha, and that its activity towards the C-terminal oxygen dependent degradation domain (which contains the other site of hydroxylation, Pro-564) is substantially weaker with respect to HIF-2alpha as compared to HIF-1alpha. ('P317R', 'Mutation', 'rs80358193', (69, 74)) ('oxygen', 'Chemical', 'MESH:D010100', (308, 314)) ('HIF-2alpha', 'Gene', '2034', (442, 452)) ('HIF-2alpha', 'Gene', (442, 452)) ('Pro', 'Chemical', 'MESH:D011392', (239, 242)) ('activity', 'MPA', (276, 284)) ('P317R', 'Var', (69, 74)) ('PHD2', 'Gene', (75, 79)) ('oxygen', 'Chemical', 'MESH:D010100', (148, 154)) ('weaker', 'NegReg', (419, 425)) ('activity', 'MPA', (116, 124)) ('N-terminal oxygen dependent degradation domain', 'MPA', (137, 183)) ('C-terminal oxygen dependent degradation domain', 'MPA', (297, 343)) ('Pro', 'Chemical', 'MESH:D011392', (393, 396)) 28625 31350093 Over twenty erythrocytosis-associated PHD2 mutations, which comprise heterozygous missense, nonsense, and frameshift mutations, have been reported. ('nonsense', 'Var', (92, 100)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (12, 26)) ('erythrocytosis', 'Disease', (12, 26)) ('mutations', 'Var', (43, 52)) ('PHD2', 'Gene', (38, 42)) ('erythrocytosis', 'Disease', 'MESH:D011086', (12, 26)) ('frameshift mutations', 'Var', (106, 126)) ('missense', 'Var', (82, 90)) 28629 31350093 Recently Sinnema and colleagues reported a PHD2 zinc finger mutation associated with congenital erythrocytosis in a 14 year old daughter of consanguineous parents. ('erythrocytosis', 'Phenotype', 'HP:0001901', (96, 110)) ('mutation', 'Var', (60, 68)) ('congenital erythrocytosis', 'Disease', (85, 110)) ('associated', 'Reg', (69, 79)) ('PHD2', 'Gene', (43, 47)) ('congenital erythrocytosis', 'Disease', 'MESH:C536842', (85, 110)) ('Sinnema', 'Disease', 'None', (9, 16)) ('Sinnema', 'Disease', (9, 16)) 28630 31350093 Whole exome sequencing using the parent-offspring trio approach revealed a homozygous missense variant in the PHD2 gene; EGLN1; Chr1 (GRCh37):g.231557511A>G; NM_022051.2: c.124T>C (p.Cys42Arg). ('EGLN1', 'Gene', '54583', (121, 126)) ('p.Cys42Arg', 'Mutation', 'p.C42R', (181, 191)) ('g.231557511A>G', 'Var', (142, 156)) ('c.124T>C', 'SUBSTITUTION', 'None', (171, 179)) ('c.124T>C', 'Var', (171, 179)) ('EGLN1', 'Gene', (121, 126)) ('PHD2', 'Gene', (110, 114)) ('g.231557511A>G', 'Mutation', 'g.231557511A>G', (142, 156)) 28632 31350093 Cys-42, the residue affected by the mutation lies within the zinc finger, and is 1 of 8 evolutionarily conserved zinc-chelating residues. ('mutation', 'Var', (36, 44)) ('Cys', 'Chemical', 'MESH:D003545', (0, 3)) ('Cys-42', 'Var', (0, 6)) 28634 31350093 The functional effect of the C42R PHD2 mutation on binding was examined by coexpressing wild type or C42R PHD2 (residues 1-196) with p23 in HEK293FT cells. ('C42R', 'Chemical', '-', (101, 105)) ('p23', 'Gene', (133, 136)) ('PHD2', 'Gene', (106, 110)) ('C42R', 'Chemical', '-', (29, 33)) ('p23', 'Gene', '8851', (133, 136)) ('HEK293FT', 'CellLine', 'CVCL:6911', (140, 148)) ('C42R', 'Var', (101, 105)) 28635 31350093 The wild-type PHD2 was found to coimmunoprecipitate with p23 but this interaction was abolished by the C42R mutation. ('C42R', 'Chemical', '-', (103, 107)) ('coimmunoprecipitate', 'Interaction', (32, 51)) ('p23', 'Gene', (57, 60)) ('p23', 'Gene', '8851', (57, 60)) ('C42R', 'Var', (103, 107)) 28637 31350093 In HRE reporter gene assays the mutant C42R PHD2 was significantly less effective than wild-type PHD2 in suppressing hypoxia-induced HRE reporter activity gene activity. ('suppressing', 'NegReg', (105, 116)) ('C42R', 'Var', (39, 43)) ('PHD2', 'Gene', (44, 48)) ('less', 'NegReg', (67, 71)) ('hypoxia', 'Disease', 'MESH:D000860', (117, 124)) ('C42R', 'Chemical', '-', (39, 43)) ('hypoxia', 'Disease', (117, 124)) ('mutant C42R', 'Var', (32, 43)) 28638 31350093 Interestingly, additional erythrocytosis-associated mutations in the zinc finger domain of PHD2 were recently reported as variants of unknown significance, but not functionally characterized. ('PHD2', 'Gene', (91, 95)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (26, 40)) ('erythrocytosis', 'Disease', 'MESH:D011086', (26, 40)) ('erythrocytosis', 'Disease', (26, 40)) ('mutations in', 'Var', (52, 64)) 28639 31350093 Subsequent examination of one of these, Y41C, which changes a highly conserved residue was also found to abrogate PHD2 binding to p23 and was defective in its capacity to down-regulate hypoxia-induced HRE activity. ('down-regulate', 'NegReg', (171, 184)) ('abrogate', 'NegReg', (105, 113)) ('PHD2', 'Protein', (114, 118)) ('hypoxia', 'Disease', (185, 192)) ('hypoxia', 'Disease', 'MESH:D000860', (185, 192)) ('Y41C', 'SUBSTITUTION', 'None', (40, 44)) ('p23', 'Gene', (130, 133)) ('Y41C', 'Var', (40, 44)) ('defective', 'NegReg', (142, 151)) ('p23', 'Gene', '8851', (130, 133)) ('binding', 'Interaction', (119, 126)) 28640 31350093 The genetic and functional studies are consistent with the proposition that the homozygous C42R mutation in PHD2 is the cause of the erythrocytosis in the 2 affected siblings. ('erythrocytosis', 'Disease', 'MESH:D011086', (133, 147)) ('erythrocytosis', 'Disease', (133, 147)) ('cause', 'Reg', (120, 125)) ('C42R', 'Var', (91, 95)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (133, 147)) ('C42R', 'Chemical', '-', (91, 95)) ('PHD2', 'Gene', (108, 112)) 28641 31350093 Characterization of knock-in mice bearing a C36S/C42S double mutation in the Phd2 allele that targets two of the predicted zinc chelating residues showed that the mice homozygous for the C36S/C42S mutation, but not heterozygous, display erythrocytosis. ('Phd2', 'Gene', (77, 81)) ('C42S', 'SUBSTITUTION', 'None', (192, 196)) ('erythrocytosis', 'Disease', (237, 251)) ('C36S', 'Var', (187, 191)) ('Phd2', 'Gene', '112405', (77, 81)) ('erythrocytosis', 'Disease', 'MESH:D011086', (237, 251)) ('C36S', 'SUBSTITUTION', 'None', (44, 48)) ('C42S', 'SUBSTITUTION', 'None', (49, 53)) ('C36S', 'Var', (44, 48)) ('C42S', 'Var', (192, 196)) ('mice', 'Species', '10090', (163, 167)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (237, 251)) ('mice', 'Species', '10090', (29, 33)) ('C42S', 'Var', (49, 53)) ('C36S', 'SUBSTITUTION', 'None', (187, 191)) 28642 31350093 The mouse Cys42 mutation affects the same residue as the human Cys42 mutation. ('mouse', 'Species', '10090', (4, 9)) ('Cys42', 'Chemical', '-', (10, 15)) ('Cys42', 'Gene', (10, 15)) ('mutation', 'Var', (16, 24)) ('Cys42', 'Chemical', '-', (63, 68)) ('affects', 'Reg', (25, 32)) ('human', 'Species', '9606', (57, 62)) 28643 31350093 The observation that 2 mutant alleles are required to produce erythrocytosis could account for its relative rarity as a cause of erythrocytosis, compared to defects affecting the catalytic site of PHD2 which are sufficient to produce a phenotype in the heterozygous state. ('erythrocytosis', 'Disease', (62, 76)) ('mutant', 'Var', (23, 29)) ('erythrocytosis', 'Disease', 'MESH:D011086', (62, 76)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (129, 143)) ('erythrocytosis', 'Disease', 'MESH:D011086', (129, 143)) ('erythrocytosis', 'Disease', (129, 143)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (62, 76)) 28644 31350093 Interestingly, the Y41C mutation is heterozygous, suggesting either that a single copy of certain zinc finger mutations is sufficient to cause the phenotype, or alternatively, that there is an as yet uncharacterized mutation in the HIF or other pathways that impact EPO production in the patient. ('impact', 'Reg', (259, 265)) ('patient', 'Species', '9606', (288, 295)) ('EPO production', 'MPA', (266, 280)) ('mutations', 'Var', (110, 119)) ('cause', 'Reg', (137, 142)) ('Y41C', 'Var', (19, 23)) ('Y41C', 'SUBSTITUTION', 'None', (19, 23)) 28645 31350093 The phenotype of the zinc finger mutations provides genetic evidence that the zinc finger has a positive regulatory function in the oxygen-sensing pathway that controls erythropoiesis. ('mutations', 'Var', (33, 42)) ('oxygen-sensing pathway', 'Pathway', (132, 154)) ('zinc finger', 'Gene', (21, 32)) ('oxygen', 'Chemical', 'MESH:D010100', (132, 138)) ('positive regulatory', 'PosReg', (96, 115)) ('erythropoiesis', 'MPA', (169, 183)) 28646 31350093 As with HIF2A and VHL (see below), mutations in PHD2 can be associated not only with erythrocytosis, but also with cancer. ('PHD2', 'Gene', (48, 52)) ('cancer', 'Disease', (115, 121)) ('VHL', 'Gene', '7428', (18, 21)) ('HIF2A', 'Gene', (8, 13)) ('erythrocytosis', 'Disease', 'MESH:D011086', (85, 99)) ('cancer', 'Phenotype', 'HP:0002664', (115, 121)) ('cancer', 'Disease', 'MESH:D009369', (115, 121)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (85, 99)) ('erythrocytosis', 'Disease', (85, 99)) ('VHL', 'Gene', (18, 21)) ('HIF2A', 'Gene', '2034', (8, 13)) ('associated', 'Reg', (60, 70)) ('mutations', 'Var', (35, 44)) 28648 31350093 Sequencing of germline DNA revealed a heterozygous H374R mutation in the PHD2 gene, while sequencing of the tumor and other studies revealed the presence of the mutant allele and loss of the wild type allele (loss of heterozygosity). ('tumor', 'Disease', 'MESH:D009369', (108, 113)) ('H374R', 'Var', (51, 56)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('tumor', 'Disease', (108, 113)) ('PHD2', 'Gene', (73, 77)) ('H374R', 'Mutation', 'rs119476045', (51, 56)) 28649 31350093 A P317S mutation in PHD2 that impairs activity has been identified in a melanoma tumor sample. ('melanoma tumor', 'Disease', 'MESH:D008545', (72, 86)) ('activity', 'MPA', (38, 46)) ('melanoma', 'Phenotype', 'HP:0002861', (72, 80)) ('impairs', 'NegReg', (30, 37)) ('P317S', 'Var', (2, 7)) ('P317S', 'Mutation', 'p.P317S', (2, 7)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('melanoma tumor', 'Disease', (72, 86)) ('PHD2', 'Gene', (20, 24)) 28650 31350093 While it is difficult to draw genotype-phenotype correlations from the limited available data, it is worth noting that the H374R mutation affects an essential iron chelating residue, which in combination with loss of heterozygosity would be predicted to lead to essentially complete loss of PHD2 activity in the tumor. ('activity', 'MPA', (296, 304)) ('tumor', 'Disease', 'MESH:D009369', (312, 317)) ('loss', 'NegReg', (283, 287)) ('tumor', 'Phenotype', 'HP:0002664', (312, 317)) ('iron', 'Chemical', 'MESH:D007501', (159, 163)) ('H374R', 'Mutation', 'rs119476045', (123, 128)) ('H374R', 'Var', (123, 128)) ('tumor', 'Disease', (312, 317)) ('affects', 'Reg', (138, 145)) ('PHD2', 'Enzyme', (291, 295)) 28653 31350093 Mice with homozygous Hif-1alpha deletion were found to die in utero from defective neurodevelopment and cardiovascular malformations, whereas mice lacking both copies of Hif-2alpha died in utero or around birth from severe vascular defects, disturbed catecholamine homeostasis, and abnormal lung maturation. ('deletion', 'Var', (32, 40)) ('Hif-1alpha', 'Gene', '15251', (21, 31)) ('Hif-2alpha', 'Gene', (170, 180)) ('Hif-1alpha', 'Gene', (21, 31)) ('vascular defects', 'Disease', (223, 239)) ('Mice', 'Species', '10090', (0, 4)) ('catecholamine', 'Chemical', 'MESH:D002395', (251, 264)) ('lung maturation', 'CPA', (291, 306)) ('Hif-2alpha', 'Gene', '13819', (170, 180)) ('abnormal lung', 'Phenotype', 'HP:0002088', (282, 295)) ('cardiovascular malformations', 'Phenotype', 'HP:0030680', (104, 132)) ('defective neurodevelopment', 'Phenotype', 'HP:0012758', (73, 99)) ('men', 'Species', '9606', (95, 98)) ('cardiovascular malformations', 'Disease', 'MESH:D018376', (104, 132)) ('disturbed catecholamine homeostasis', 'Phenotype', 'HP:0012099', (241, 276)) ('disturbed', 'Reg', (241, 250)) ('cardiovascular malformations', 'Disease', (104, 132)) ('catecholamine homeostasis', 'MPA', (251, 276)) ('vascular defects', 'Disease', 'MESH:D000783', (223, 239)) ('mice', 'Species', '10090', (142, 146)) 28655 31350093 Deletion of Hif-2alpha caused pancytopenia and hypocellular bone marrow. ('hypocellular bone marrow', 'Disease', 'MESH:D001855', (47, 71)) ('Hif-2alpha', 'Gene', '13819', (12, 22)) ('pancytopenia', 'Disease', (30, 42)) ('Hif-2alpha', 'Gene', (12, 22)) ('pancytopenia', 'Disease', 'MESH:D010198', (30, 42)) ('hypocellular bone marrow', 'Phenotype', 'HP:0005528', (47, 71)) ('hypocellular bone marrow', 'Disease', (47, 71)) ('caused', 'Reg', (23, 29)) ('pancytopenia', 'Phenotype', 'HP:0001876', (30, 42)) ('Deletion', 'Var', (0, 8)) 28657 31350093 Erythrocytosis induced by conditional liver knockout of Vhl is rescued by concurrent deletion of the Hif2a, but not the Hif1a, gene, demonstrating that hepatic regulation of Epo is dependent on Hif-2alpha. ('Hif-2alpha', 'Gene', '13819', (194, 204)) ('Hif-2alpha', 'Gene', (194, 204)) ('Hif1a', 'Gene', '3091', (120, 125)) ('Hif2a', 'Gene', '2034', (101, 106)) ('Erythrocytosis', 'Phenotype', 'HP:0001901', (0, 14)) ('Epo', 'Gene', (174, 177)) ('Epo', 'Gene', '13856', (174, 177)) ('Erythrocytosis', 'Disease', (0, 14)) ('deletion', 'Var', (85, 93)) ('Hif1a', 'Gene', (120, 125)) ('Erythrocytosis', 'Disease', 'MESH:D011086', (0, 14)) ('Hif2a', 'Gene', (101, 106)) ('Vhl', 'Gene', '7428', (56, 59)) ('Vhl', 'Gene', (56, 59)) 28660 31350093 These findings set the stage for identifying the genes responsible for erythrocytosis in humans by studies of specific mutations in patients with inherited forms of secondary erythrocytosis. ('erythrocytosis', 'Disease', 'MESH:D011086', (175, 189)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (71, 85)) ('secondary erythrocytosis', 'Disease', (165, 189)) ('erythrocytosis', 'Disease', (71, 85)) ('secondary erythrocytosis', 'Disease', 'MESH:D011086', (165, 189)) ('humans', 'Species', '9606', (89, 95)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (175, 189)) ('erythrocytosis', 'Disease', 'MESH:D011086', (71, 85)) ('mutations', 'Var', (119, 128)) ('erythrocytosis', 'Disease', (175, 189)) ('patients', 'Species', '9606', (132, 140)) 28661 31350093 A study of the HIF2A gene in 3 generations of one family with erythrocytosis uncovered a novel G537W mutation located close to the hydroxylacceptor P531. ('HIF2A', 'Gene', (15, 20)) ('erythrocytosis', 'Disease', (62, 76)) ('erythrocytosis', 'Disease', 'MESH:D011086', (62, 76)) ('G537W', 'Mutation', 'rs137853036', (95, 100)) ('HIF2A', 'Gene', '2034', (15, 20)) ('G537W', 'Var', (95, 100)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (62, 76)) 28662 31350093 Functional characterization of the erythrocytosis-associated G537W HIF-2alpha mutant showed that a mutant G537W HIF-2alpha peptide binds less tightly to PHD2 and is less efficiently hydroxylated by PHD2 than wild-type peptide. ('erythrocytosis', 'Phenotype', 'HP:0001901', (35, 49)) ('erythrocytosis', 'Disease', (35, 49)) ('binds', 'Interaction', (131, 136)) ('G537W', 'Mutation', 'rs137853036', (61, 66)) ('HIF-2alpha', 'Gene', (67, 77)) ('HIF-2alpha', 'Gene', (112, 122)) ('erythrocytosis', 'Disease', 'MESH:D011086', (35, 49)) ('less', 'NegReg', (137, 141)) ('G537W', 'Var', (61, 66)) ('hydroxylated', 'MPA', (182, 194)) ('G537W', 'Mutation', 'rs137853036', (106, 111)) ('less', 'NegReg', (165, 169)) ('HIF-2alpha', 'Gene', '2034', (67, 77)) ('tightly', 'Interaction', (142, 149)) ('G537W', 'Var', (106, 111)) ('HIF-2alpha', 'Gene', '2034', (112, 122)) 28663 31350093 Additional studies showed that the mutation also affected subsequent recognition of HIF-2alpha by VHL (Fig. ('recognition', 'MPA', (69, 80)) ('HIF-2alpha', 'Gene', (84, 94)) ('VHL', 'Gene', (98, 101)) ('affected', 'Reg', (49, 57)) ('VHL', 'Gene', '7428', (98, 101)) ('HIF-2alpha', 'Gene', '2034', (84, 94)) ('mutation', 'Var', (35, 43)) 28664 31350093 A mouse model for the G537W mutation (G536W in the mouse) demonstrated erythrocytosis in mice heterozygous for the mutation that was accentuated in mice homozygous for it. ('G536W', 'Mutation', 'p.G536W', (38, 43)) ('G537W', 'Mutation', 'rs137853036', (22, 27)) ('mice', 'Species', '10090', (89, 93)) ('mouse', 'Species', '10090', (51, 56)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (71, 85)) ('G537W', 'Var', (22, 27)) ('erythrocytosis', 'Disease', (71, 85)) ('mice', 'Species', '10090', (148, 152)) ('mouse', 'Species', '10090', (2, 7)) ('erythrocytosis', 'Disease', 'MESH:D011086', (71, 85)) 28665 31350093 In vitro functional assays of three further erythrocytosis-associated mutations of HIF-2alpha located C-terminal to the highly conserved LXXLAP motif that contains the hyroxylacceptor proline, viz. ('erythrocytosis', 'Disease', 'MESH:D011086', (44, 58)) ('HIF-2alpha', 'Gene', (83, 93)) ('mutations', 'Var', (70, 79)) ('HIF-2alpha', 'Gene', '2034', (83, 93)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (44, 58)) ('proline', 'Chemical', 'MESH:D011392', (184, 191)) ('erythrocytosis', 'Disease', (44, 58)) 28666 31350093 M535V, P534L and G537R, revealed that all three mutants stabilized HIF-2alpha, but did so in nonidentical ways; P534L and G537R impaired binding to both PHD2 and VHL, but M535V impaired binding only to PHD2. ('VHL', 'Gene', (162, 165)) ('binding', 'Interaction', (137, 144)) ('M535V', 'Mutation', 'rs137853037', (171, 176)) ('VHL', 'Gene', '7428', (162, 165)) ('M535V', 'Mutation', 'rs137853037', (0, 5)) ('P534L', 'Mutation', 'p.P534L', (112, 117)) ('HIF-2alpha', 'Gene', (67, 77)) ('impaired', 'NegReg', (128, 136)) ('PHD2', 'Protein', (153, 157)) ('P534L', 'Mutation', 'p.P534L', (7, 12)) ('binding', 'Interaction', (186, 193)) ('M535V', 'Var', (171, 176)) ('HIF-2alpha', 'Gene', '2034', (67, 77)) ('G537R', 'Mutation', 'rs137853036', (122, 127)) ('P534L', 'Var', (112, 117)) ('G537R', 'Mutation', 'rs137853036', (17, 22)) ('G537R', 'Var', (122, 127)) 28667 31350093 This suggests that the M535V mutation is pathogenic mainly through effects on PHD2 binding and catalytic hydroxylation, and that impairment of the PHD2/HIF2 interaction alone is sufficient to induce erythrocytosis. ('interaction', 'Interaction', (157, 168)) ('PHD2', 'Protein', (78, 82)) ('induce', 'Reg', (192, 198)) ('catalytic hydroxylation', 'MPA', (95, 118)) ('binding', 'Interaction', (83, 90)) ('M535V', 'Var', (23, 28)) ('effects', 'Reg', (67, 74)) ('men', 'Species', '9606', (135, 138)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (199, 213)) ('M535V', 'Mutation', 'rs137853037', (23, 28)) ('erythrocytosis', 'Disease', 'MESH:D011086', (199, 213)) ('erythrocytosis', 'Disease', (199, 213)) 28668 31350093 This accords with the finding that mutations in PHD2 alone are a distinct cause of erythrocytosis. ('erythrocytosis', 'Disease', (83, 97)) ('erythrocytosis', 'Disease', 'MESH:D011086', (83, 97)) ('PHD2', 'Gene', (48, 52)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (83, 97)) ('cause', 'Reg', (74, 79)) ('mutations', 'Var', (35, 44)) 28669 31350093 The existence of erythrocytosis-associated VHL mutations confirms that impairment of the HIF-alpha/VHL interaction alone is sufficient to induce erythrocytosis. ('erythrocytosis', 'Disease', 'MESH:D011086', (17, 31)) ('erythrocytosis', 'Disease', (17, 31)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (145, 159)) ('VHL', 'Gene', (43, 46)) ('VHL', 'Gene', (99, 102)) ('erythrocytosis', 'Disease', (145, 159)) ('mutations', 'Var', (47, 56)) ('men', 'Species', '9606', (77, 80)) ('induce', 'Reg', (138, 144)) ('VHL', 'Gene', '7428', (43, 46)) ('VHL', 'Gene', '7428', (99, 102)) ('erythrocytosis', 'Disease', 'MESH:D011086', (145, 159)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (17, 31)) 28670 31350093 Decreased degradation leads to stabilization of HIF-2alpha, a gain-of-function phenotype, and it argues against the possibility that a dominant negative mechanism involving increased mutant binding to PHD2 leading to impaired hydroxylation of wild type HIF-2alpha, or increased mutant binding to VHL, could be responsible for the erythrocytosis. ('erythrocytosis', 'Phenotype', 'HP:0001901', (330, 344)) ('erythrocytosis', 'Disease', (330, 344)) ('increased', 'PosReg', (173, 182)) ('HIF-2alpha', 'Gene', (253, 263)) ('mutant', 'Var', (278, 284)) ('HIF-2alpha', 'Gene', '2034', (48, 58)) ('mutant', 'Var', (183, 189)) ('VHL', 'Gene', (296, 299)) ('stabilization', 'MPA', (31, 44)) ('impaired', 'NegReg', (217, 225)) ('PHD2', 'Gene', (201, 205)) ('HIF-2alpha', 'Gene', (48, 58)) ('VHL', 'Gene', '7428', (296, 299)) ('degradation', 'MPA', (10, 21)) ('HIF-2alpha', 'Gene', '2034', (253, 263)) ('erythrocytosis', 'Disease', 'MESH:D011086', (330, 344)) ('binding', 'Interaction', (285, 292)) ('hydroxylation', 'MPA', (226, 239)) ('binding', 'Interaction', (190, 197)) 28671 31350093 To date no mutations in the HIF1A gene have been found to be associated with erythrocytosis in humans. ('mutations', 'Var', (11, 20)) ('HIF1A', 'Gene', (28, 33)) ('HIF1A', 'Gene', '3091', (28, 33)) ('humans', 'Species', '9606', (95, 101)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (77, 91)) ('associated', 'Reg', (61, 71)) ('erythrocytosis', 'Disease', 'MESH:D011086', (77, 91)) ('erythrocytosis', 'Disease', (77, 91)) 28672 31350093 Familial erythrocytosis caused by a gain-of-function mutation in the HIF2A gene is an autosomal dominant disorder, and has been designated as ECYT4 in the MIM classification #: 611783. ('gain-of-function', 'PosReg', (36, 52)) ('mutation', 'Var', (53, 61)) ('autosomal dominant disorder', 'Disease', (86, 113)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (9, 23)) ('autosomal dominant disorder', 'Disease', 'MESH:D030342', (86, 113)) ('Familial erythrocytosis', 'Disease', (0, 23)) ('HIF2A', 'Gene', '2034', (69, 74)) ('ECYT4', 'Gene', (142, 147)) ('Familial erythrocytosis', 'Disease', 'MESH:C536842', (0, 23)) ('HIF2A', 'Gene', (69, 74)) ('ECYT4', 'Gene', '2034', (142, 147)) 28673 31350093 Somatic HIF-2alpha gain-of-function mutations were subsequently established as a cause of neuroendocrine tumors. ('neuroendocrine tumors', 'Disease', (90, 111)) ('gain-of-function', 'PosReg', (19, 35)) ('HIF-2alpha', 'Gene', (8, 18)) ('mutations', 'Var', (36, 45)) ('HIF-2alpha', 'Gene', '2034', (8, 18)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (90, 111)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (90, 111)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('tumors', 'Phenotype', 'HP:0002664', (105, 111)) 28674 31350093 Additional HIF-2alpha mutations associated with erythrocytosis, neuroendocrine tumors, or both have been reported. ('erythrocytosis', 'Disease', (48, 62)) ('HIF-2alpha', 'Gene', '2034', (11, 21)) ('erythrocytosis', 'Disease', 'MESH:D011086', (48, 62)) ('neuroendocrine tumors', 'Disease', (64, 85)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (64, 85)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (64, 85)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('mutations', 'Var', (22, 31)) ('associated', 'Reg', (32, 42)) ('HIF-2alpha', 'Gene', (11, 21)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (48, 62)) 28677 31350093 The location of the HIF-2alpha mutations is shown in Fig. ('HIF-2alpha', 'Gene', (20, 30)) ('HIF-2alpha', 'Gene', '2034', (20, 30)) ('mutations', 'Var', (31, 40)) 28678 31350093 HIF-2alpha gain-of-function mutations in class 1a-c and ECYT4 share a common feature, an increase in HIF-2alpha stability, but differ in the location of the mutations. ('stability', 'MPA', (112, 121)) ('ECYT4', 'Gene', '2034', (56, 61)) ('HIF-2alpha', 'Gene', '2034', (0, 10)) ('ECYT4', 'Gene', (56, 61)) ('HIF-2alpha', 'Gene', (101, 111)) ('HIF-2alpha', 'Gene', '2034', (101, 111)) ('gain-of-function', 'PosReg', (11, 27)) ('mutations', 'Var', (28, 37)) ('HIF-2alpha', 'Gene', (0, 10)) ('increase', 'PosReg', (89, 97)) 28679 31350093 Overall, the majority of HIF-2alpha mutations are missense mutations located between amino acids 519 and 545. ('missense mutations', 'Var', (50, 68)) ('HIF-2alpha', 'Gene', (25, 35)) ('mutations', 'Var', (36, 45)) ('HIF-2alpha', 'Gene', '2034', (25, 35)) 28680 31350093 Whereas all of the ECYT4 mutations described so far lie between amino acids 533 and 540, most of the class 1a-c mutations lie between 529 and 532 (containing proline 531, the primary hydroxylation site of HIF-2alpha ) and another small group between 539 and 544. ('mutations', 'Var', (25, 34)) ('proline', 'Chemical', 'MESH:D011392', (158, 165)) ('ECYT4', 'Gene', '2034', (19, 24)) ('HIF-2alpha', 'Gene', (205, 215)) ('mutations', 'Var', (112, 121)) ('ECYT4', 'Gene', (19, 24)) ('HIF-2alpha', 'Gene', '2034', (205, 215)) ('class 1a-c', 'Gene', (101, 111)) 28682 31350093 have recently reported three somatic HIF-2alpha mutations (p.A530V, p.P531S, and p.D539N) identified in DNA from paragangliomas (PGLs) of three patients. ('paragangliomas', 'Disease', (113, 127)) ('p.A530V', 'Var', (59, 66)) ('p.P531S', 'Var', (68, 75)) ('paragangliomas', 'Disease', 'MESH:D010235', (113, 127)) ('paragangliomas', 'Phenotype', 'HP:0002668', (113, 127)) ('p.D539N', 'Mutation', 'p.D539N', (81, 88)) ('PGLs', 'Phenotype', 'HP:0002668', (129, 133)) ('paraganglioma', 'Phenotype', 'HP:0002668', (113, 126)) ('p.P531S', 'Mutation', 'p.P531S', (68, 75)) ('p.A530V', 'Mutation', 'p.A530V', (59, 66)) ('HIF-2alpha', 'Gene', (37, 47)) ('patients', 'Species', '9606', (144, 152)) ('HIF-2alpha', 'Gene', '2034', (37, 47)) ('p.D539N', 'Var', (81, 88)) 28686 31350093 Class 1 mutations affect residues that make contact with VHL, whereas the majority of the ECYT4 mutations are localized to the kink region between the N-terminal and C-terminal segments. ('ECYT4', 'Gene', '2034', (90, 95)) ('affect', 'Reg', (18, 24)) ('mutations', 'Var', (8, 17)) ('residues', 'Protein', (25, 33)) ('VHL', 'Gene', (57, 60)) ('ECYT4', 'Gene', (90, 95)) ('men', 'Species', '9606', (180, 183)) ('VHL', 'Gene', '7428', (57, 60)) ('mutations', 'Var', (96, 105)) 28687 31350093 Based on temperature factor analysis residues N-terminal to the kink region (as defined by Tarade and colleagues, in their Figure 3) have a lower temperature factor and bind in a more rigid manner, raising the possibility that class 1 mutations would have a greater negative impact on the VHL-HIF-2alpha interaction than ECYT4 mutations. ('lower', 'NegReg', (140, 145)) ('HIF-2alpha', 'Gene', (293, 303)) ('VHL', 'Gene', '7428', (289, 292)) ('mutations', 'Var', (235, 244)) ('bind', 'Interaction', (169, 173)) ('ECYT4', 'Gene', '2034', (321, 326)) ('HIF-2alpha', 'Gene', '2034', (293, 303)) ('temperature factor', 'MPA', (146, 164)) ('negative', 'NegReg', (266, 274)) ('interaction', 'Interaction', (304, 315)) ('ECYT4', 'Gene', (321, 326)) ('VHL', 'Gene', (289, 292)) 28688 31350093 This was confirmed by steady-state and kinetic binding experiments which showed that class 1 mutations predominantly have a more deleterious effect on VHL affinity than ECYT4 mutations. ('mutations', 'Var', (93, 102)) ('ECYT4', 'Gene', '2034', (169, 174)) ('ECYT4', 'Gene', (169, 174)) ('VHL', 'Gene', (151, 154)) ('men', 'Species', '9606', (61, 64)) ('VHL', 'Gene', '7428', (151, 154)) 28690 31350093 Small increases in HIF-2alpha caused by mild disruption are sufficient to elicit erythrocytosis, but more serious disruption, leading to higher levels of HIF-2alpha, can be pathogenic for neuroendocrine tumors. ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (188, 209)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (188, 209)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('elicit', 'Reg', (74, 80)) ('HIF-2alpha', 'Gene', '2034', (19, 29)) ('tumors', 'Phenotype', 'HP:0002664', (203, 209)) ('higher', 'PosReg', (137, 143)) ('neuroendocrine tumors', 'Disease', (188, 209)) ('HIF-2alpha', 'Gene', (19, 29)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (81, 95)) ('HIF-2alpha', 'Gene', (154, 164)) ('disruption', 'Var', (45, 55)) ('HIF-2alpha', 'Gene', '2034', (154, 164)) ('erythrocytosis', 'Disease', 'MESH:D011086', (81, 95)) ('erythrocytosis', 'Disease', (81, 95)) ('increases', 'PosReg', (6, 15)) 28693 31350093 VHL mutations are also associated with benign tumors. ('tumor', 'Phenotype', 'HP:0002664', (46, 51)) ('benign tumors', 'Disease', 'MESH:D009369', (39, 52)) ('benign tumors', 'Disease', (39, 52)) ('tumors', 'Phenotype', 'HP:0002664', (46, 52)) ('VHL', 'Gene', (0, 3)) ('mutations', 'Var', (4, 13)) ('VHL', 'Gene', '7428', (0, 3)) ('associated', 'Reg', (23, 33)) 28695 31350093 A group of homozygous VHL gene mutations cause erythrocytosis that is not associated with any malignant or benign VHL syndrome. ('mutations', 'Var', (31, 40)) ('VHL', 'Gene', (22, 25)) ('VHL', 'Gene', '7428', (114, 117)) ('VHL', 'Gene', '7428', (22, 25)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (47, 61)) ('cause', 'Reg', (41, 46)) ('erythrocytosis', 'Disease', (47, 61)) ('malignant or benign VHL syndrome', 'Disease', (94, 126)) ('erythrocytosis', 'Disease', 'MESH:D011086', (47, 61)) ('malignant or benign VHL syndrome', 'Disease', 'MESH:D006623', (94, 126)) ('VHL', 'Gene', (114, 117)) 28698 31350093 Interactions between the mutated protein and HIF-1alpha or HIF-2alpha are impaired leading to increased expression of their target genes including EPO and vascular endothelial growth factor (VEGF). ('VEGF', 'Gene', (191, 195)) ('HIF-2alpha', 'Gene', '2034', (59, 69)) ('impaired', 'NegReg', (74, 82)) ('increased', 'PosReg', (94, 103)) ('vascular endothelial growth factor', 'Gene', '7422', (155, 189)) ('EPO', 'Gene', (147, 150)) ('Interactions', 'Interaction', (0, 12)) ('expression', 'MPA', (104, 114)) ('vascular endothelial growth factor', 'Gene', (155, 189)) ('VEGF', 'Gene', '7422', (191, 195)) ('protein', 'Protein', (33, 40)) ('mutated', 'Var', (25, 32)) ('HIF-2alpha', 'Gene', (59, 69)) 28702 31350093 Two other homozygous VHL mutations, H191D and P138L, and several compound heterozygotes--three in combination with the R200W mutation, have been reported to cause congenital erythrocytosis but not cancer. ('erythrocytosis', 'Phenotype', 'HP:0001901', (174, 188)) ('cause', 'Reg', (157, 162)) ('cancer', 'Disease', 'MESH:D009369', (197, 203)) ('H191D', 'Mutation', 'rs28940301', (36, 41)) ('congenital erythrocytosis', 'Disease', 'MESH:C536842', (163, 188)) ('cancer', 'Phenotype', 'HP:0002664', (197, 203)) ('cancer', 'Disease', (197, 203)) ('R200W', 'Mutation', 'rs28940298', (119, 124)) ('congenital erythrocytosis', 'Disease', (163, 188)) ('VHL', 'Gene', (21, 24)) ('H191D', 'Var', (36, 41)) ('P138L', 'Mutation', 'rs780178275', (46, 51)) ('VHL', 'Gene', '7428', (21, 24)) ('P138L', 'Var', (46, 51)) 28706 31350093 Both VHL213 and VHL160 are involved in the regulation of the oxygen sensing pathway and mutations would appear to have the potential to lead to the development of erythrocytosis or tumors. ('oxygen', 'Chemical', 'MESH:D010100', (61, 67)) ('men', 'Species', '9606', (155, 158)) ('VHL', 'Gene', (16, 19)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (163, 177)) ('tumors', 'Phenotype', 'HP:0002664', (181, 187)) ('lead to', 'Reg', (136, 143)) ('VHL', 'Gene', '7428', (16, 19)) ('VHL', 'Gene', (5, 8)) ('mutations', 'Var', (88, 97)) ('involved', 'Reg', (27, 35)) ('VHL', 'Gene', '7428', (5, 8)) ('oxygen sensing pathway', 'Pathway', (61, 83)) ('erythrocytosis or tumors', 'Disease', (163, 187)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) ('erythrocytosis or tumors', 'Disease', 'MESH:D011086', (163, 187)) 28707 31350093 That being stated, there are individuals with homozygous M54I mutations that abolishes the internal translation start site (and hence the production of VHL160) who display erythrocytosis, extremely high EPO levels, but no tumors, suggesting that VHL213 and VHL160 do not have identical functions. ('erythrocytosis', 'Disease', (172, 186)) ('VHL', 'Gene', '7428', (246, 249)) ('VHL', 'Gene', '7428', (152, 155)) ('M54I mutations', 'Var', (57, 71)) ('tumor', 'Phenotype', 'HP:0002664', (222, 227)) ('tumors', 'Disease', (222, 228)) ('M54I', 'Mutation', 'p.M54I', (57, 61)) ('EPO levels', 'MPA', (203, 213)) ('abolishes', 'NegReg', (77, 86)) ('VHL', 'Gene', (257, 260)) ('tumors', 'Disease', 'MESH:D009369', (222, 228)) ('high', 'PosReg', (198, 202)) ('VHL', 'Gene', '7428', (257, 260)) ('VHL', 'Gene', (246, 249)) ('VHL', 'Gene', (152, 155)) ('internal translation start site', 'MPA', (91, 122)) ('erythrocytosis', 'Disease', 'MESH:D011086', (172, 186)) ('tumors', 'Phenotype', 'HP:0002664', (222, 228)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (172, 186)) 28708 31350093 Particular mutations of VHL are generally linked to either erythrocytosis or the development of tumors. ('mutations', 'Var', (11, 20)) ('VHL', 'Gene', '7428', (24, 27)) ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('erythrocytosis', 'Disease', 'MESH:D011086', (59, 73)) ('erythrocytosis', 'Disease', (59, 73)) ('tumors', 'Disease', (96, 102)) ('tumors', 'Phenotype', 'HP:0002664', (96, 102)) ('tumors', 'Disease', 'MESH:D009369', (96, 102)) ('men', 'Species', '9606', (88, 91)) ('VHL', 'Gene', (24, 27)) ('linked to', 'Reg', (42, 51)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (59, 73)) 28709 31350093 The mechanisms that govern the phenotype-genotype relationship of VHL-driven disease have been characterized for some but not all mutations, so it is of interest that Lenglet and colleagues have recently identified a novel cryptic exon in intron 1 of the VHL gene (E1') and synonymous mutations in VHL exon 2 that affected splicing in both congenital erythrocytosis and typical VHL disease. ('mutations', 'Var', (285, 294)) ('congenital erythrocytosis', 'Disease', (340, 365)) ('VHL disease', 'Disease', (378, 389)) ('VHL', 'Gene', '7428', (378, 381)) ('VHL', 'Gene', (298, 301)) ('VHL', 'Gene', '7428', (66, 69)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (351, 365)) ('VHL', 'Gene', '7428', (298, 301)) ('VHL', 'Gene', '7428', (255, 258)) ('VHL disease', 'Disease', 'MESH:D006623', (378, 389)) ('VHL', 'Gene', (255, 258)) ('VHL', 'Gene', (378, 381)) ('congenital erythrocytosis', 'Disease', 'MESH:C536842', (340, 365)) ('splicing', 'MPA', (323, 331)) ('VHL', 'Gene', (66, 69)) ('affected', 'Reg', (314, 322)) 28710 31350093 They investigated a patient with erythrocytosis with a known synonymous VHL c.429C>T p.Asp143Asp (D143D) mutation in the heterozygous state, and no other mutations in the 3 VHL canonical exons. ('VHL', 'Gene', (173, 176)) ('VHL', 'Gene', '7428', (72, 75)) ('p.Asp143Asp', 'Mutation', 'rs773556807', (85, 96)) ('c.429C>T p.Asp143Asp', 'Var', (76, 96)) ('VHL', 'Gene', '7428', (173, 176)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (33, 47)) ('c.429C>T', 'Mutation', 'rs773556807', (76, 84)) ('erythrocytosis', 'Disease', (33, 47)) ('patient', 'Species', '9606', (20, 27)) ('D143D', 'Mutation', 'rs773556807', (98, 103)) ('erythrocytosis', 'Disease', 'MESH:D011086', (33, 47)) ('p.Asp143Asp', 'Var', (85, 96)) ('VHL', 'Gene', (72, 75)) 28715 31350093 Investigation of six additional families with hereditary erythrocytosis revealed the presence of more E1' mutations. ("E1'", 'Gene', (102, 105)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (57, 71)) ('mutations', 'Var', (106, 115)) ('hereditary erythrocytosis', 'Disease', (46, 71)) ('hereditary erythrocytosis', 'Disease', 'MESH:C536842', (46, 71)) 28716 31350093 In five of the families, the affected family members were compound heterozygotes in which one VHL allele contained the E1' mutation while the other VHL allele contained a coding sequence mutation. ('VHL', 'Gene', (148, 151)) ('VHL', 'Gene', '7428', (94, 97)) ("E1'", 'Var', (119, 122)) ('VHL', 'Gene', '7428', (148, 151)) ('VHL', 'Gene', (94, 97)) 28717 31350093 E1' mutations were also detected in typical VHL disease lacking alteration in the canonical VHL coding sequence exons. ('detected', 'Reg', (24, 32)) ('VHL disease', 'Disease', 'MESH:D006623', (44, 55)) ('VHL', 'Gene', (44, 47)) ('VHL', 'Gene', (92, 95)) ('VHL', 'Gene', '7428', (44, 47)) ('VHL', 'Gene', '7428', (92, 95)) ('VHL disease', 'Disease', (44, 55)) ('mutations', 'Var', (4, 13)) 28718 31350093 Sequencing of the new E1' cryptic exon in a large family with hereditary hemangioblastoma, clear cell renal cell carcinoma and pheochromocytoma identified 2 heterozygous variants, a previously unknown variant, c.340+617C>G and a c.340+648T>C variant originally reported as a rare polymorphism. ('c.340+617C>G', 'Mutation', 'c.340+617C>G', (210, 222)) ('c.340+617C>G', 'Var', (210, 222)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (73, 89)) ('c.340+648T>C', 'Var', (229, 241)) ('c.340+648T>C', 'Mutation', 'rs73024533', (229, 241)) ('clear cell renal cell carcinoma', 'Disease', 'MESH:C538614', (91, 122)) ('clear cell renal cell carcinoma', 'Disease', (91, 122)) ('pheochromocytoma', 'Disease', (127, 143)) ('clear cell renal cell carcinoma', 'Phenotype', 'HP:0006770', (91, 122)) ('carcinoma', 'Phenotype', 'HP:0030731', (113, 122)) ('hereditary hemangioblastoma', 'Disease', (62, 89)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (127, 143)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (102, 122)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (127, 143)) ('hereditary hemangioblastoma', 'Disease', 'MESH:D018325', (62, 89)) 28719 31350093 These variants cosegregated in 6 patients who developed VHL disease, but were absent in the four healthy descendants tested, indicating their presence on a single disease-associated allele. ('variants', 'Var', (6, 14)) ('patients', 'Species', '9606', (33, 41)) ('VHL disease', 'Disease', (56, 67)) ('developed', 'Reg', (46, 55)) ('VHL disease', 'Disease', 'MESH:D006623', (56, 67)) 28720 31350093 All of the new E1' mutations caused complex dysregulation of VHL splicing with excessive retention of E1', and significantly, were associated with downregulation of VHL protein expression. ("E1'", 'Gene', (15, 18)) ('mutations', 'Var', (19, 28)) ('dysregulation', 'MPA', (44, 57)) ('downregulation', 'NegReg', (147, 161)) ('VHL', 'Gene', (61, 64)) ('VHL', 'Gene', (165, 168)) ('VHL', 'Gene', '7428', (61, 64)) ('VHL', 'Gene', '7428', (165, 168)) 28723 31350093 In particular, the synonymous variants D143D and P138P should be considered as pathogenic mutations. ('P138P', 'Var', (49, 54)) ('D143D', 'Mutation', 'rs773556807', (39, 44)) ('D143D', 'Var', (39, 44)) ('P138P', 'Mutation', 'rs869025648', (49, 54)) 28725 31350093 Depending on the mutation in this region, the impact could be moderate (D143D, G144R and P138L) or severe (P138P) correlating with the severity of the disease, vis-a-vis congenital erythrocytosis and cancer. ('vis-a-vis congenital erythrocytosis', 'Disease', (160, 195)) ('D143D', 'Mutation', 'rs773556807', (72, 77)) ('cancer', 'Disease', 'MESH:D009369', (200, 206)) ('P138P', 'Var', (107, 112)) ('P138L', 'Mutation', 'rs780178275', (89, 94)) ('G144R', 'Mutation', 'rs869025650', (79, 84)) ('cancer', 'Phenotype', 'HP:0002664', (200, 206)) ('P138P', 'Mutation', 'rs869025648', (107, 112)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (181, 195)) ('P138L', 'Var', (89, 94)) ('D143D', 'Var', (72, 77)) ('G144R', 'Var', (79, 84)) ('vis-a-vis congenital erythrocytosis', 'Disease', 'MESH:D028243', (160, 195)) ('cancer', 'Disease', (200, 206)) 28727 31350093 Mutations identified in E1' in association with erythropoiesis had less severe impact on splicing than the mutations associated with cancer, confirming that erythrocytosis was associated with VHL hypomorphic mutations. ('erythrocytosis', 'Disease', 'MESH:D011086', (157, 171)) ('VHL hypomorphic', 'Disease', 'MESH:D006623', (192, 207)) ('cancer', 'Disease', 'MESH:D009369', (133, 139)) ('splicing', 'MPA', (89, 97)) ('associated', 'Reg', (176, 186)) ("E1'", 'Gene', (24, 27)) ('cancer', 'Disease', (133, 139)) ('Mutations', 'Var', (0, 9)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (157, 171)) ('VHL hypomorphic', 'Disease', (192, 207)) ('cancer', 'Phenotype', 'HP:0002664', (133, 139)) ('erythrocytosis', 'Disease', (157, 171)) 28728 31350093 Recently Zmajkovic and colleagues identified a mutation in the EPO gene that cosegregated with the disorder in a large family with autosomal dominant erythrocytosis (Fig. ('EPO', 'Gene', (63, 66)) ('autosomal dominant erythrocytosis', 'Disease', 'MESH:D011086', (131, 164)) ('mutation', 'Var', (47, 55)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (150, 164)) ('cosegregated', 'Reg', (77, 89)) ('autosomal dominant erythrocytosis', 'Disease', (131, 164)) 28731 31350093 To investigate how DeltaG, an apparent loss-of-function variant of EPO, produces EPO the authors searched for alternative EPO mRNAs. ('DeltaG', 'Mutation', 'c.delG', (19, 25)) ('DeltaG', 'Var', (19, 25)) ('EPO', 'Gene', (67, 70)) ('EPO', 'Disease', (81, 84)) ('loss-of-function', 'NegReg', (39, 55)) 28733 31350093 Cells transfected with DeltaG P2 produced more EPO than those transfected with wild-type P1 cDNA and the EPO was biologically active. ('more', 'PosReg', (42, 46)) ('EPO', 'MPA', (47, 50)) ('DeltaG', 'Mutation', 'c.delG', (23, 29)) ('DeltaG P2', 'Var', (23, 32)) 28734 31350093 Overall the results indicate that the EPO DeltaG mutation terminates translation of EPO P1 transcripts prematurely, but paradoxically alters the normally non-coding P2 transcripts so that AUG2, which ordinarily is out of frame with respect to the canonical EPO reading frame, initiates translation of the EPO coding sequence due to the frameshift, and produces an excess of biologically active EPO. ('translation', 'MPA', (286, 297)) ('alters', 'Reg', (134, 140)) ('DeltaG', 'Mutation', 'c.delG', (42, 48)) ('EPO DeltaG', 'Gene', (38, 48)) ('initiates', 'PosReg', (276, 285)) ('mutation', 'Var', (49, 57)) ('EPO P1', 'Gene', (84, 90)) ('biologically active EPO', 'MPA', (374, 397)) ('excess', 'PosReg', (364, 370)) ('frameshift', 'Var', (336, 346)) ('AUG2', 'Gene', (188, 192)) ('terminates', 'NegReg', (58, 68)) ('translation', 'MPA', (69, 80)) 28735 31350093 A comparison of translated protein in this situation with that produced under normal circumstances, as well as the proposed mechanism for EPO overproduction by the DeltaG single-nucleotide deletion in Exon 2 of EPO is depicted in Fig. ('overproduction', 'PosReg', (142, 156)) ('DeltaG', 'Mutation', 'c.delG', (164, 170)) ('EPO', 'MPA', (138, 141)) ('single-nucleotide deletion in', 'Var', (171, 200)) 28738 31350093 The P2 transcripts with the DeltaC mutation produced high amounts of biologically active EPO, demonstrating that the EPO DeltaC causes erythrocytosis by the same mechanism as the EPO DeltaG mutation. ('EPO', 'Gene', (117, 120)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (135, 149)) ('erythrocytosis', 'Disease', (135, 149)) ('erythrocytosis', 'Disease', 'MESH:D011086', (135, 149)) ('mutation', 'Var', (35, 43)) ('causes', 'Reg', (128, 134)) ('DeltaG', 'Mutation', 'c.delG', (183, 189)) ('DeltaC', 'Var', (121, 127)) 28739 31350093 Familial erythrocytosis caused by mutations in the EPO gene has now been designated as ECYT5 in the MIM classification #: 617907. ('EPO', 'Gene', (51, 54)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (9, 23)) ('Familial erythrocytosis', 'Disease', (0, 23)) ('Familial erythrocytosis', 'Disease', 'MESH:C536842', (0, 23)) ('mutations', 'Var', (34, 43)) ('caused', 'Reg', (24, 30)) 28743 31350093 This variant is distinct from the aforementioned coding sequence mutation in the EPO gene, raising the possibility that it may cause erythrocytosis by a different mechanism. ('erythrocytosis', 'Disease', 'MESH:D011086', (133, 147)) ('erythrocytosis', 'Disease', (133, 147)) ('cause', 'Reg', (127, 132)) ('variant', 'Var', (5, 12)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (133, 147)) ('men', 'Species', '9606', (39, 42)) 28751 31350093 Included among these are mutations in genes of the HIF: EPO pathway, including PHD2, HIF2A, VHL, and EPO. ('mutations', 'Var', (25, 34)) ('HIF2A', 'Gene', '2034', (85, 90)) ('VHL', 'Gene', (92, 95)) ('EPO', 'Gene', (101, 104)) ('HIF2A', 'Gene', (85, 90)) ('VHL', 'Gene', '7428', (92, 95)) ('EPO pathway', 'Pathway', (56, 67)) ('PHD2', 'Gene', (79, 83)) 28752 31350093 Genetic lesions in the HIF: EPO pathway should be particularly considered as a cause of erythrocytosis in patients with normal to elevated EPO levels, a family history of erythrocytosis, or in situations in which other secondary causes of erythrocytosis, such as high affinity hemoglobin, EPO-producing tumors, or right to left cardiac shunts, have been ruled out. ('erythrocytosis', 'Phenotype', 'HP:0001901', (171, 185)) ('tumor', 'Phenotype', 'HP:0002664', (303, 308)) ('erythrocytosis', 'Disease', 'MESH:D011086', (239, 253)) ('cardiac shunts', 'Phenotype', 'HP:0001693', (328, 342)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (88, 102)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (239, 253)) ('cause', 'Reg', (79, 84)) ('erythrocytosis', 'Disease', (88, 102)) ('tumors', 'Disease', (303, 309)) ('tumors', 'Disease', 'MESH:D009369', (303, 309)) ('erythrocytosis', 'Disease', 'MESH:D011086', (171, 185)) ('EPO levels', 'MPA', (139, 149)) ('erythrocytosis', 'Disease', (171, 185)) ('erythrocytosis', 'Disease', 'MESH:D011086', (88, 102)) ('Genetic lesions', 'Var', (0, 15)) ('erythrocytosis', 'Disease', (239, 253)) ('patients', 'Species', '9606', (106, 114)) ('tumors', 'Phenotype', 'HP:0002664', (303, 309)) 28753 31350093 Gain further insight into genotype: phenotype correlations in erythrocytosis-associated mutations in genes of the HIF: EPO pathway. ('erythrocytosis', 'Disease', 'MESH:D011086', (62, 76)) ('erythrocytosis', 'Disease', (62, 76)) ('mutations', 'Var', (88, 97)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (62, 76)) 28762 31469413 Stratification of PCPG patients with a risk-score formulated using multivariate analysis of lincRNA expression profiles, presence of key driver mutations, tumor location, and hormone secretion profiles showed significant differences in metastasis-free survival. ('tumor', 'Disease', 'MESH:D009369', (155, 160)) ('metastasis-free survival', 'CPA', (236, 260)) ('presence', 'Var', (121, 129)) ('tumor', 'Phenotype', 'HP:0002664', (155, 160)) ('patients', 'Species', '9606', (23, 31)) ('tumor', 'Disease', (155, 160)) ('differences', 'Reg', (221, 232)) ('mutations', 'Var', (144, 153)) 28768 31469413 Pseudohypoxic tumors can be further grouped into two distinct clusters: SDHx-mutated (including all cases with mutations in genes related to the tricarboxylic acid cycle) as well as non-SDHx-mutated (related to aberrations in VHL/EPAS1). ('mutations', 'Var', (111, 120)) ('Pseudohypoxic tumors', 'Disease', (0, 20)) ('EPAS1', 'Gene', '2034', (230, 235)) ('Pseudohypoxic tumors', 'Disease', 'MESH:D009369', (0, 20)) ('SDHx-mutated', 'Disease', (72, 84)) ('EPAS1', 'Gene', (230, 235)) ('tumors', 'Phenotype', 'HP:0002664', (14, 20)) ('VHL', 'Gene', (226, 229)) ('VHL', 'Gene', '7428', (226, 229)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (145, 163)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) 28769 31469413 PCPGs belonging to the subcluster SDHx-mutated pseudohypoxia; and most predominantly SDHB mutation, are associated with metastatic disease. ('hypoxia', 'Disease', (53, 60)) ('hypoxia', 'Disease', 'MESH:D000860', (53, 60)) ('metastatic disease', 'Disease', (120, 138)) ('associated', 'Reg', (104, 114)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('mutation', 'Var', (90, 98)) 28771 31469413 Other factors reported to be associated with metastasis in PCPG are somatic mutations in ATRX or telomerase activation, which generally co-occur with SDHB mutation. ('mutations', 'Var', (76, 85)) ('telomerase', 'CPA', (97, 107)) ('ATRX', 'Gene', (89, 93)) ('SDHB', 'Gene', '6390', (150, 154)) ('ATRX', 'Gene', '546', (89, 93)) ('SDHB', 'Gene', (150, 154)) ('mutation', 'Var', (155, 163)) 28780 31469413 For calculation of the combined prognostic index (PI), expression levels of 18 marker lincRNAs, expression of TERT, and the following 6 clinical parameters were combined in a multivariate Cox regression model: (i) germline SDHB mutation; (ii) nonadrenal tumor location; (iii) ATRX somatic mutation; secretion of (iv) normetanephrine or norepinephrine; (v) epinephrine or metanephrine; and (vi) methoxytyramine, or dopamine (details of all statistical tests in Supporting Information). ('ATRX', 'Gene', '546', (276, 280)) ('mutation', 'Var', (228, 236)) ('norepinephrine', 'MPA', (336, 350)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (246, 259)) ('tumor', 'Phenotype', 'HP:0002664', (254, 259)) ('TERT', 'Gene', (110, 114)) ('SDHB', 'Gene', '6390', (223, 227)) ('epinephrine', 'MPA', (356, 367)) ('TERT', 'Gene', '7015', (110, 114)) ('SDHB', 'Gene', (223, 227)) ('adrenal tumor', 'Disease', (246, 259)) ('ATRX', 'Gene', (276, 280)) ('secretion of', 'MPA', (299, 311)) ('methoxytyramine', 'MPA', (394, 409)) ('adrenal tumor', 'Disease', 'MESH:D000310', (246, 259)) 28801 31469413 Until now, the most relevant molecular markers for aggressive or metastatic PCPG have been the SDHB and ATRX mutations. ('ATRX', 'Gene', (104, 108)) ('SDHB', 'Gene', '6390', (95, 99)) ('aggressive or metastatic PCPG', 'Disease', (51, 80)) ('mutations', 'Var', (109, 118)) ('SDHB', 'Gene', (95, 99)) ('ATRX', 'Gene', '546', (104, 108)) 28809 31469413 In all of these cases, underexpression of the lincRNAs showed better metastasis-free survival in tumors from the corresponding molecular subtype, making them interesting candidates as possible new targets for treating patients diagnosed with the particular subtype. ('underexpression', 'Var', (23, 38)) ('patients', 'Species', '9606', (218, 226)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('better', 'PosReg', (62, 68)) ('metastasis-free survival', 'CPA', (69, 93)) ('tumors', 'Disease', (97, 103)) ('tumors', 'Phenotype', 'HP:0002664', (97, 103)) ('tumors', 'Disease', 'MESH:D009369', (97, 103)) 28874 32503466 High expression of TRIM44 protein in malignant tissues was found to be strongly associated with poor OS (HR = 1.94, 95% CI: 1.60-2.35, p < 0.0001), and the heterogeneity test revealed a mild heterogeneity (I2 = 32.6%; PQ = 0.139). ('High', 'Var', (0, 4)) ('poor OS', 'Disease', (96, 103)) ('TRIM44', 'Gene', '54765', (19, 25)) ('associated', 'Reg', (80, 90)) ('TRIM44', 'Gene', (19, 25)) ('PQ', 'Chemical', '-', (218, 220)) ('protein', 'Protein', (26, 33)) 28888 32503466 When combined with all data from 33 different types of malignant tumors in GEPIA, the Kaplan-Meier analysis suggested that cancer patients with a high expression level of TRIM44 exhibited poorer OS, compared with cases expressing a low level of TRIM44 (Fig. ('cancer', 'Phenotype', 'HP:0002664', (123, 129)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) ('TRIM44', 'Gene', '54765', (245, 251)) ('cancer', 'Disease', 'MESH:D009369', (123, 129)) ('TRIM44', 'Gene', '54765', (171, 177)) ('patients', 'Species', '9606', (130, 138)) ('tumors', 'Phenotype', 'HP:0002664', (65, 71)) ('malignant tumors', 'Disease', (55, 71)) ('cancer', 'Disease', (123, 129)) ('TRIM44', 'Gene', (245, 251)) ('TRIM44', 'Gene', (171, 177)) ('malignant tumors', 'Disease', 'MESH:D009369', (55, 71)) ('high expression', 'Var', (146, 161)) 28896 32503466 TRIM44 amplification is correlated with unfavorable prognosis and advanced clinicopathological parameters of malignancies. ('TRIM44', 'Gene', (0, 6)) ('malignancies', 'Disease', (109, 121)) ('TRIM44', 'Gene', '54765', (0, 6)) ('amplification', 'Var', (7, 20)) ('malignancies', 'Disease', 'MESH:D009369', (109, 121)) 28906 32503466 Overexpression of TRIM44 has been shown to induce a similar change in hallmark characteristics of EMT in other cancers, such as ICC and HEC. ('cancers', 'Disease', 'MESH:D009369', (111, 118)) ('cancers', 'Phenotype', 'HP:0002664', (111, 118)) ('ICC', 'Disease', (128, 131)) ('HEC', 'CellLine', 'CVCL:N814', (136, 139)) ('TRIM44', 'Gene', '54765', (18, 24)) ('cancers', 'Disease', (111, 118)) ('change', 'Reg', (60, 66)) ('hallmark characteristics of', 'MPA', (70, 97)) ('HEC', 'Disease', (136, 139)) ('TRIM44', 'Gene', (18, 24)) ('cancer', 'Phenotype', 'HP:0002664', (111, 117)) ('Overexpression', 'Var', (0, 14)) 28908 32503466 TRIM44 expression positively affects the expression of cyclins and CDKs, suggesting that TRIM44 is involved in the regulation of cell cycle G1/s transformation. ('TRIM44', 'Gene', (0, 6)) ('affects', 'Reg', (29, 36)) ('expression', 'MPA', (41, 51)) ('involved', 'Reg', (99, 107)) ('TRIM44', 'Gene', '54765', (89, 95)) ('cyclin', 'Gene', '5111', (55, 61)) ('expression', 'Var', (7, 17)) ('TRIM44', 'Gene', '54765', (0, 6)) ('CDKs', 'Gene', '23097', (67, 71)) ('TRIM44', 'Gene', (89, 95)) ('cyclin', 'Gene', (55, 61)) ('CDKs', 'Gene', (67, 71)) 28910 32503466 Indeed, ectopic expression of TRIM44 promotes cell proliferation by accelerating the G1/S-phase transition in HCC. ('accelerating', 'PosReg', (68, 80)) ('HCC', 'Gene', '619501', (110, 113)) ('ectopic expression', 'Var', (8, 26)) ('G1/S-phase transition', 'CPA', (85, 106)) ('HCC', 'Gene', (110, 113)) ('TRIM44', 'Gene', '54765', (30, 36)) ('TRIM44', 'Gene', (30, 36)) ('cell proliferation', 'CPA', (46, 64)) ('promotes', 'PosReg', (37, 45)) 28911 32503466 In colony formation assays, knockdown of TRIM44 in Huh7 cells significantly decreased the expression levels of cyclin D1 and cyclin E, which have been shown to play a crucial role in accelerating the G1/S-phase transition. ('G1/S-phase transition', 'CPA', (200, 221)) ('cyclin D1', 'Gene', (111, 120)) ('TRIM44', 'Gene', (41, 47)) ('Huh7', 'CellLine', 'CVCL:0336', (51, 55)) ('expression levels', 'MPA', (90, 107)) ('decreased', 'NegReg', (76, 85)) ('cyclin D1', 'Gene', '595', (111, 120)) ('cyclin', 'Gene', '5111', (111, 117)) ('cyclin', 'Gene', '5111', (125, 131)) ('knockdown', 'Var', (28, 37)) ('accelerating', 'PosReg', (183, 195)) ('cyclin', 'Gene', (125, 131)) ('TRIM44', 'Gene', '54765', (41, 47)) ('cyclin', 'Gene', (111, 117)) 28913 32503466 Knock-down of TRIM44 in glioma cells induces an increase in p21/p27 expression,and then it inhibited cell division. ('TRIM44', 'Gene', '54765', (14, 20)) ('p27', 'Gene', '10671', (64, 67)) ('glioma', 'Disease', 'MESH:D005910', (24, 30)) ('cell division', 'CPA', (101, 114)) ('glioma', 'Phenotype', 'HP:0009733', (24, 30)) ('p21', 'Gene', '644914', (60, 63)) ('expression', 'MPA', (68, 78)) ('p27', 'Gene', (64, 67)) ('inhibited', 'NegReg', (91, 100)) ('TRIM44', 'Gene', (14, 20)) ('Knock-down', 'Var', (0, 10)) ('glioma', 'Disease', (24, 30)) ('p21', 'Gene', (60, 63)) ('increase', 'PosReg', (48, 56)) 28914 32503466 Further, the critical p21/p27 regulator AKT is inactivated after TRIM44 is knocked down, but it is activated in glioma cells that overexpress TRIM44. ('inactivated', 'NegReg', (47, 58)) ('TRIM44', 'Gene', '54765', (65, 71)) ('glioma', 'Phenotype', 'HP:0009733', (112, 118)) ('TRIM44', 'Gene', '54765', (142, 148)) ('knocked', 'Var', (75, 82)) ('AKT', 'Gene', '207', (40, 43)) ('TRIM44', 'Gene', (65, 71)) ('TRIM44', 'Gene', (142, 148)) ('glioma', 'Disease', (112, 118)) ('activated', 'PosReg', (99, 108)) ('p21', 'Gene', (22, 25)) ('p27', 'Gene', '10671', (26, 29)) ('AKT', 'Gene', (40, 43)) ('glioma', 'Disease', 'MESH:D005910', (112, 118)) ('p21', 'Gene', '644914', (22, 25)) ('p27', 'Gene', (26, 29)) ('overexpress', 'PosReg', (130, 141)) 28915 32503466 TRIM44 overexpression leads to high mTOR activity, which is consistent with observations of reduced mTOR signaling in cancer cell lines after siRNA knockdown of TRIM44. ('TRIM44', 'Gene', (161, 167)) ('cancer', 'Disease', (118, 124)) ('TRIM44', 'Gene', (0, 6)) ('overexpression', 'Var', (7, 21)) ('mTOR', 'Gene', (36, 40)) ('mTOR', 'Gene', '2475', (36, 40)) ('cancer', 'Phenotype', 'HP:0002664', (118, 124)) ('reduced', 'NegReg', (92, 99)) ('TRIM44', 'Gene', '54765', (161, 167)) ('TRIM44', 'Gene', '54765', (0, 6)) ('cancer', 'Disease', 'MESH:D009369', (118, 124)) ('mTOR', 'Gene', (100, 104)) ('mTOR', 'Gene', '2475', (100, 104)) 28916 32503466 The phosphorylation of downstream mTOR substrates, including p-Akt (Ser473) and p-p70S6K (Thr389), in TRIM44-knockdown cells was markedly inhibited, indicating that TRIM44 functions upstream of the mTOR signaling pathway by phosphorylating mTOR. ('TRIM44', 'Gene', (102, 108)) ('TRIM44', 'Gene', (165, 171)) ('p70S6K', 'Gene', (82, 88)) ('Ser473', 'Var', (68, 74)) ('inhibited', 'NegReg', (138, 147)) ('Akt', 'Gene', '207', (63, 66)) ('Ser473', 'Chemical', '-', (68, 74)) ('mTOR', 'Gene', (34, 38)) ('mTOR', 'Gene', (240, 244)) ('mTOR', 'Gene', '2475', (34, 38)) ('mTOR', 'Gene', '2475', (240, 244)) ('Thr389', 'Var', (90, 96)) ('p70S6K', 'Gene', '6198', (82, 88)) ('mTOR', 'Gene', (198, 202)) ('Thr389', 'Chemical', '-', (90, 96)) ('phosphorylation', 'MPA', (4, 19)) ('mTOR', 'Gene', '2475', (198, 202)) ('TRIM44', 'Gene', '54765', (102, 108)) ('TRIM44', 'Gene', '54765', (165, 171)) ('Akt', 'Gene', (63, 66)) 28927 32503466 Microarray analysis showed that TRIM44 knockdown is associated with the dysregulation of NUPR1, CDK19, CADM1, INHBA, TNFSF10, and DDIT4, which could normally activate the apoptotic cell pathways. ('TNFSF10', 'Gene', (117, 124)) ('apoptotic cell pathways', 'Pathway', (171, 194)) ('INHBA', 'Gene', (110, 115)) ('activate', 'PosReg', (158, 166)) ('knockdown', 'Var', (39, 48)) ('DDIT4', 'Gene', (130, 135)) ('CADM1', 'Gene', (103, 108)) ('NUPR1', 'Gene', (89, 94)) ('CADM1', 'Gene', '23705', (103, 108)) ('TRIM44', 'Gene', '54765', (32, 38)) ('TNFSF10', 'Gene', '8743', (117, 124)) ('TRIM44', 'Gene', (32, 38)) ('CDK19', 'Gene', (96, 101)) ('NUPR1', 'Gene', '26471', (89, 94)) ('CDK19', 'Gene', '23097', (96, 101)) ('INHBA', 'Gene', '3624', (110, 115)) ('DDIT4', 'Gene', '54541', (130, 135)) ('dysregulation', 'MPA', (72, 85)) 28936 32503466 A previous report has shown that the silencing of TRIM44 could decrease the c-IAP1, c-IAP2, and XIAP expression levels, especially in the presence of doxorubicin. ('c-IAP1', 'Gene', (76, 82)) ('XIAP', 'Gene', '331', (96, 100)) ('c-IAP1', 'Gene', '329', (76, 82)) ('doxorubicin', 'Chemical', 'MESH:D004317', (150, 161)) ('TRIM44', 'Gene', '54765', (50, 56)) ('silencing', 'Var', (37, 46)) ('decrease', 'NegReg', (63, 71)) ('c-IAP2', 'Gene', (84, 90)) ('c-IAP2', 'Gene', '330', (84, 90)) ('TRIM44', 'Gene', (50, 56)) ('XIAP', 'Gene', (96, 100)) 28943 32503466 Moreover, miR-26b-5p is the upstream regulatory gene of TRIM44, which acts as a suppressor. ('miR-26b-5p', 'Var', (10, 20)) ('TRIM44', 'Gene', '54765', (56, 62)) ('TRIM44', 'Gene', (56, 62)) 28969 32335823 IDH1 mutation was significantly associated with high-SST2 status. ('SST', 'Gene', '6750', (53, 56)) ('associated', 'Reg', (32, 42)) ('IDH1', 'Gene', (0, 4)) ('SST', 'Gene', (53, 56)) ('mutation', 'Var', (5, 13)) ('IDH1', 'Gene', '3417', (0, 4)) 28977 32335823 In particular, several radioligands targeting SST have been developed, such as 68Ga-DOTATOC and 68Ga-DOTATATE, which are now commonly used in the diagnosis of neuroendocrine tumors (NETs) via positron emission tomography (PET). ('neuroendocrine tumors', 'Disease', (159, 180)) ('SST', 'Gene', '6750', (46, 49)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (159, 180)) ('68Ga-DOTATATE', 'Var', (96, 109)) ('DOTATOC', 'Chemical', '-', (84, 91)) ('NETs', 'Phenotype', 'HP:0100634', (182, 186)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (159, 180)) ('tumor', 'Phenotype', 'HP:0002664', (174, 179)) ('SST', 'Gene', (46, 49)) ('68Ga-DOTATATE', 'Chemical', 'MESH:C513399', (96, 109)) ('tumors', 'Phenotype', 'HP:0002664', (174, 180)) 29019 32335823 Mutational profiles were significantly associated with high-SST2 status in LGG, which showed the highest proportion of high-SST tumors, including isocitrate dehydrogenase 1 (IDH1), capicua transcriptional repressor (CIC), and far upstream element binding protein 1 (FUBP1) mutations. ('FUBP1', 'Gene', (266, 271)) ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('associated', 'Reg', (39, 49)) ('tumors', 'Disease', (128, 134)) ('CIC', 'Gene', '23152', (216, 219)) ('isocitrate dehydrogenase 1', 'Gene', (146, 172)) ('isocitrate dehydrogenase 1', 'Gene', '3417', (146, 172)) ('SST', 'Gene', (124, 127)) ('IDH1', 'Gene', (174, 178)) ('tumors', 'Disease', 'MESH:D009369', (128, 134)) ('capicua transcriptional repressor', 'Gene', '23152', (181, 214)) ('FUBP1', 'Gene', '8880', (266, 271)) ('far upstream element binding protein 1', 'Gene', '8880', (226, 264)) ('SST', 'Gene', (60, 63)) ('IDH1', 'Gene', '3417', (174, 178)) ('CIC', 'Gene', (216, 219)) ('SST', 'Gene', '6750', (124, 127)) ('SST', 'Gene', '6750', (60, 63)) ('mutations', 'Var', (273, 282)) ('capicua transcriptional repressor', 'Gene', (181, 214)) ('far upstream element binding protein 1', 'Gene', (226, 264)) ('tumors', 'Phenotype', 'HP:0002664', (128, 134)) 29020 32335823 In contrast, epidermal growth factor receptor (EGFR), phosphatase and tensin homolog (PTEN), and tumor protein 53 (TP53) mutations were more common in low-SST2 tumors than in high-SST2 tumors (Fig. ('mutations', 'Var', (121, 130)) ('common', 'Reg', (141, 147)) ('PTEN', 'Gene', (86, 90)) ('tumor protein 53', 'Gene', (97, 113)) ('tumors', 'Disease', (185, 191)) ('tumor protein 53', 'Gene', '7157', (97, 113)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('EGFR', 'Gene', '1956', (47, 51)) ('tumors', 'Disease', (160, 166)) ('epidermal growth factor receptor', 'Gene', (13, 45)) ('PTEN', 'Gene', '5728', (86, 90)) ('epidermal growth factor receptor', 'Gene', '1956', (13, 45)) ('SST', 'Gene', (155, 158)) ('tumors', 'Disease', 'MESH:D009369', (185, 191)) ('TP53', 'Gene', (115, 119)) ('SST', 'Gene', (180, 183)) ('tumors', 'Disease', 'MESH:D009369', (160, 166)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('SST', 'Gene', '6750', (155, 158)) ('EGFR', 'Gene', (47, 51)) ('phosphatase and tensin homolog', 'Gene', '5728', (54, 84)) ('SST', 'Gene', '6750', (180, 183)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('tumors', 'Phenotype', 'HP:0002664', (185, 191)) ('tumors', 'Phenotype', 'HP:0002664', (160, 166)) 29021 32335823 In pancreatic adenocarcinoma (PAAD), Kirsten rat sarcoma (KRAS) and TP53 mutations were associated with low-SST2 status. ('KRAS', 'Gene', (58, 62)) ('sarcoma', 'Disease', 'MESH:D012509', (49, 56)) ('SST', 'Gene', '6750', (108, 111)) ('sarcoma', 'Phenotype', 'HP:0100242', (49, 56)) ('KRAS', 'Gene', '24525', (58, 62)) ('pancreatic adenocarcinoma', 'Disease', (3, 28)) ('pancreatic adenocarcinoma', 'Disease', 'MESH:D000230', (3, 28)) ('carcinoma', 'Phenotype', 'HP:0030731', (19, 28)) ('PAAD', 'Phenotype', 'HP:0006725', (30, 34)) ('SST', 'Gene', (108, 111)) ('pancreatic adenocarcinoma', 'Phenotype', 'HP:0006725', (3, 28)) ('associated', 'Reg', (88, 98)) ('TP53', 'Gene', (68, 72)) ('mutations', 'Var', (73, 82)) ('rat', 'Species', '10116', (45, 48)) ('sarcoma', 'Disease', (49, 56)) 29022 32335823 In uterine corpus endometrial carcinoma (UCEC), catenin beta 1 (CTNNB1) mutation showed an association with low-SST2 status. ('endometrial carcinoma', 'Phenotype', 'HP:0012114', (18, 39)) ('SST', 'Gene', (112, 115)) ('endometrial carcinoma', 'Disease', 'MESH:D016889', (18, 39)) ('CTNNB1', 'Gene', (64, 70)) ('catenin beta 1', 'Gene', (48, 62)) ('endometrial carcinoma', 'Disease', (18, 39)) ('SST', 'Gene', '6750', (112, 115)) ('CTNNB1', 'Gene', '1499', (64, 70)) ('carcinoma', 'Phenotype', 'HP:0030731', (30, 39)) ('mutation', 'Var', (72, 80)) ('catenin beta 1', 'Gene', '1499', (48, 62)) ('association', 'Interaction', (91, 102)) 29023 32335823 When high-SST2 tumors were defined with the expression level in PCPG as a reference value, SST2-based tumor subtypes were not significantly associated with gene alterations in other cancer subtypes, including BRCA, PCPG, and KIRC. ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('SST', 'Gene', '6750', (10, 13)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('BRCA', 'Phenotype', 'HP:0003002', (209, 213)) ('tumors', 'Phenotype', 'HP:0002664', (15, 21)) ('KIRC', 'Disease', (225, 229)) ('cancer', 'Disease', (182, 188)) ('rat', 'Species', '10116', (165, 168)) ('SST', 'Gene', (91, 94)) ('tumors', 'Disease', (15, 21)) ('BRCA', 'Gene', '672', (209, 213)) ('alterations', 'Var', (161, 172)) ('cancer', 'Phenotype', 'HP:0002664', (182, 188)) ('associated', 'Reg', (140, 150)) ('tumor', 'Disease', (15, 20)) ('tumor', 'Disease', (102, 107)) ('tumors', 'Disease', 'MESH:D009369', (15, 21)) ('tumor', 'Disease', 'MESH:D009369', (15, 20)) ('BRCA', 'Gene', (209, 213)) ('SST', 'Gene', '6750', (91, 94)) ('SST', 'Gene', (10, 13)) ('tumor', 'Disease', 'MESH:D009369', (102, 107)) ('cancer', 'Disease', 'MESH:D009369', (182, 188)) ('PCPG', 'Disease', (215, 219)) 29026 32335823 The SST2 level in G2 grade tumors was significantly higher than that in G3 grade tumors (Fig. ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('tumors', 'Disease', (81, 87)) ('tumors', 'Disease', 'MESH:D009369', (81, 87)) ('G2 grade', 'Var', (18, 26)) ('SST', 'Gene', (4, 7)) ('tumors', 'Disease', (27, 33)) ('tumors', 'Disease', 'MESH:D009369', (27, 33)) ('tumors', 'Phenotype', 'HP:0002664', (27, 33)) ('higher', 'PosReg', (52, 58)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('SST', 'Gene', '6750', (4, 7)) ('tumors', 'Phenotype', 'HP:0002664', (81, 87)) 29034 32335823 In addition, SST2 status showed prognostic impact in thymoma and glioblastoma when the level of expression in normal kidney tissue was defined as the reference (Supplementary fig. ('SST', 'Gene', (13, 16)) ('impact', 'Reg', (43, 49)) ('thymoma', 'Phenotype', 'HP:0100522', (53, 60)) ('prognostic', 'Reg', (32, 42)) ('SST', 'Gene', '6750', (13, 16)) ('thymoma and glioblastoma', 'Disease', 'MESH:D013945', (53, 77)) ('glioblastoma', 'Phenotype', 'HP:0012174', (65, 77)) ('status', 'Var', (18, 24)) 29040 32335823 Additionally, we revealed that fourteen of the 32 cancer subtypes had more than 5% of tumors with high-SST2 expression when SST2 expression in normal kidney tissue was used as the reference. ('SST', 'Gene', '6750', (124, 127)) ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('SST', 'Gene', '6750', (103, 106)) ('cancer', 'Disease', (50, 56)) ('cancer', 'Disease', 'MESH:D009369', (50, 56)) ('tumors', 'Disease', (86, 92)) ('SST', 'Gene', (103, 106)) ('tumors', 'Disease', 'MESH:D009369', (86, 92)) ('tumors', 'Phenotype', 'HP:0002664', (86, 92)) ('SST', 'Gene', (124, 127)) ('cancer', 'Phenotype', 'HP:0002664', (50, 56)) ('expression', 'Var', (108, 118)) 29053 32335823 Several gene mutations were noted to have a correlation with SST2 expression in LGG. ('SST', 'Gene', (61, 64)) ('SST', 'Gene', '6750', (61, 64)) ('expression', 'MPA', (66, 76)) ('correlation', 'Reg', (44, 55)) ('mutations', 'Var', (13, 22)) 29054 32335823 In particular, the IDH1 mutation was revealed to be associated with SST2 expression, which is supported by a previous study. ('IDH1', 'Gene', (19, 23)) ('associated', 'Reg', (52, 62)) ('IDH1', 'Gene', '3417', (19, 23)) ('expression', 'MPA', (73, 83)) ('SST', 'Gene', '6750', (68, 71)) ('mutation', 'Var', (24, 32)) ('SST', 'Gene', (68, 71)) 29055 32335823 The close association between IDH1 mutation and SST2 expression was also verified by the association of high-SST2 with good prognosis in LGG. ('IDH1', 'Gene', '3417', (30, 34)) ('IDH1', 'Gene', (30, 34)) ('SST', 'Gene', (48, 51)) ('SST', 'Gene', '6750', (109, 112)) ('mutation', 'Var', (35, 43)) ('SST', 'Gene', '6750', (48, 51)) ('SST', 'Gene', (109, 112)) ('LGG', 'Disease', (137, 140)) ('association', 'Interaction', (89, 100)) 29056 32335823 The presence of IDH1 mutation is the most common factor used to classify tumor subtypes in terms of disparate molecular pathogenesis and favorable prognosis. ('tumor', 'Disease', 'MESH:D009369', (73, 78)) ('rat', 'Species', '10116', (105, 108)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('mutation', 'Var', (21, 29)) ('IDH1', 'Gene', (16, 20)) ('tumor', 'Disease', (73, 78)) ('IDH1', 'Gene', '3417', (16, 20)) 29057 32335823 Additionally, not only IDH1 but also CIC and FUBP1 mutations demonstrated a positive association with SST2 expression. ('SST', 'Gene', (102, 105)) ('mutations', 'Var', (51, 60)) ('CIC', 'Gene', '23152', (37, 40)) ('FUBP1', 'Gene', '8880', (45, 50)) ('IDH1', 'Gene', (23, 27)) ('expression', 'MPA', (107, 117)) ('CIC', 'Gene', (37, 40)) ('rat', 'Species', '10116', (68, 71)) ('SST', 'Gene', '6750', (102, 105)) ('FUBP1', 'Gene', (45, 50)) ('IDH1', 'Gene', '3417', (23, 27)) ('positive', 'PosReg', (76, 84)) 29058 32335823 This finding is also consistent with previous studies that showed an association between IDH1, CIC, and FUBP1 mutations and a favorable prognosis. ('CIC', 'Gene', '23152', (95, 98)) ('mutations', 'Var', (110, 119)) ('FUBP1', 'Gene', '8880', (104, 109)) ('CIC', 'Gene', (95, 98)) ('IDH1', 'Gene', (89, 93)) ('FUBP1', 'Gene', (104, 109)) ('IDH1', 'Gene', '3417', (89, 93)) 29059 32335823 In contrast, EGFR, PTEN, and TP53 mutations showed a negative association with SST2 expression. ('SST', 'Gene', '6750', (79, 82)) ('SST', 'Gene', (79, 82)) ('PTEN', 'Gene', (19, 23)) ('PTEN', 'Gene', '5728', (19, 23)) ('TP53', 'Gene', (29, 33)) ('negative', 'NegReg', (53, 61)) ('expression', 'MPA', (84, 94)) ('EGFR', 'Gene', '1956', (13, 17)) ('EGFR', 'Gene', (13, 17)) ('mutations', 'Var', (34, 43)) 29064 32335823 Considering the association between gene mutations and SST2 expression, a high level of SST2 expression can be deemed a strong alternative to favorable prognostic markers, such as IDH1 mutation or tumor grade. ('mutations', 'Var', (41, 50)) ('SST', 'Gene', (88, 91)) ('IDH1', 'Gene', (180, 184)) ('tumor', 'Disease', 'MESH:D009369', (197, 202)) ('IDH1', 'Gene', '3417', (180, 184)) ('SST', 'Gene', '6750', (88, 91)) ('mutation', 'Var', (185, 193)) ('SST', 'Gene', (55, 58)) ('tumor', 'Phenotype', 'HP:0002664', (197, 202)) ('SST', 'Gene', '6750', (55, 58)) ('tumor', 'Disease', (197, 202)) 29078 32335823 Second, therapeutic radiopharmaceuticals, including Lu-177-labeled DOTATATE, may be a feasible option for high-SST2 tumors regardless of the organ-based subtypes. ('tumors', 'Disease', (116, 122)) ('tumors', 'Disease', 'MESH:D009369', (116, 122)) ('SST', 'Gene', '6750', (111, 114)) ('Lu-177', 'Chemical', 'MESH:C000615061', (52, 58)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('SST', 'Gene', (111, 114)) ('Lu-177-labeled', 'Var', (52, 66)) ('tumors', 'Phenotype', 'HP:0002664', (116, 122)) ('DOTATATE', 'Chemical', '-', (67, 75)) 29079 32335823 Despite IDH1 mutations and hormone receptor expression being good prognostic factors, recurrence of brain tumor patients with IDH1 mutations and breast cancer patients with hormone receptor expression is frequently observed in the clinical setting. ('IDH1', 'Gene', '3417', (126, 130)) ('mutations', 'Var', (131, 140)) ('IDH1', 'Gene', (8, 12)) ('patients', 'Species', '9606', (112, 120)) ('brain tumor', 'Disease', (100, 111)) ('IDH1', 'Gene', '3417', (8, 12)) ('breast cancer', 'Disease', 'MESH:D001943', (145, 158)) ('IDH1', 'Gene', (126, 130)) ('brain tumor', 'Disease', 'MESH:D001932', (100, 111)) ('cancer', 'Phenotype', 'HP:0002664', (152, 158)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('breast cancer', 'Disease', (145, 158)) ('patients', 'Species', '9606', (159, 167)) ('breast cancer', 'Phenotype', 'HP:0003002', (145, 158)) ('brain tumor', 'Phenotype', 'HP:0030692', (100, 111)) 29099 32251318 However, the functions of the many variants of these proteins in cancer remain incompletely understood. ('cancer', 'Disease', (65, 71)) ('cancer', 'Disease', 'MESH:D009369', (65, 71)) ('cancer', 'Phenotype', 'HP:0002664', (65, 71)) ('variants', 'Var', (35, 43)) 29101 32251318 Although the mutation rate of the netrin family is low in pan-cancer, among the tumor patients with netrin mutations, the highest number are Uterine Corpus Endometrial Carcinoma patients, accounting for 13.6% of cases (54 of 397). ('tumor', 'Disease', 'MESH:D009369', (80, 85)) ('netrin', 'Gene', (100, 106)) ('mutations', 'Var', (107, 116)) ('cancer', 'Phenotype', 'HP:0002664', (62, 68)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('patients', 'Species', '9606', (178, 186)) ('Corpus Endometrial Carcinoma', 'Disease', 'MESH:D016889', (149, 177)) ('Carcinoma', 'Phenotype', 'HP:0030731', (168, 177)) ('tumor', 'Disease', (80, 85)) ('cancer', 'Disease', (62, 68)) ('cancer', 'Disease', 'MESH:D009369', (62, 68)) ('Endometrial Carcinoma', 'Phenotype', 'HP:0012114', (156, 177)) ('Corpus Endometrial Carcinoma', 'Disease', (149, 177)) ('patients', 'Species', '9606', (86, 94)) 29109 32251318 HGF inhibits the treatment of RAF inhibitors of BRAF mutant melanoma. ('inhibits', 'NegReg', (4, 12)) ('RAF', 'Gene', '22882', (49, 52)) ('HGF', 'Gene', (0, 3)) ('RAF', 'Gene', (49, 52)) ('treatment of', 'MPA', (17, 29)) ('melanoma', 'Disease', 'MESH:D008545', (60, 68)) ('melanoma', 'Phenotype', 'HP:0002861', (60, 68)) ('HGF', 'Gene', '3082', (0, 3)) ('melanoma', 'Disease', (60, 68)) ('RAF', 'Gene', '22882', (30, 33)) ('mutant', 'Var', (53, 59)) ('RAF', 'Gene', (30, 33)) ('BRAF', 'Gene', (48, 52)) ('BRAF', 'Gene', '673', (48, 52)) 29128 32251318 Mutations in the netrins were identified in the 33 cancers included in TCGA (Fig. ('cancer', 'Phenotype', 'HP:0002664', (51, 57)) ('netrins', 'Gene', (17, 24)) ('Mutations', 'Var', (0, 9)) ('cancers', 'Phenotype', 'HP:0002664', (51, 58)) ('identified', 'Reg', (30, 40)) ('cancers', 'Disease', (51, 58)) ('cancers', 'Disease', 'MESH:D009369', (51, 58)) 29129 32251318 At the cancer level, netrins associated with uterine corpus endometrial carcinoma (UCEC) exhibited the highest number of mutations (54), followed by colon adenocarcinoma (COAD) (49), skin cutaneous melanoma (SKCM) (47), stomach adenocarcinoma (STAD) (42), lung adenocarcinoma (LUAD) (38), and lung squamous cell carcinoma (LUSC)(36). ('mutations', 'Var', (121, 130)) ('carcinoma', 'Phenotype', 'HP:0030731', (160, 169)) ('carcinoma', 'Phenotype', 'HP:0030731', (72, 81)) ('endometrial carcinoma', 'Phenotype', 'HP:0012114', (60, 81)) ('melanoma', 'Phenotype', 'HP:0002861', (198, 206)) ('lung adenocarcinoma', 'Disease', (256, 275)) ('cancer', 'Disease', (7, 13)) ('associated', 'Reg', (29, 39)) ('LUAD', 'Phenotype', 'HP:0030078', (277, 281)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (188, 206)) ('stomach adenocarcinoma', 'Disease', (220, 242)) ('cancer', 'Phenotype', 'HP:0002664', (7, 13)) ('stomach adenocarcinoma', 'Disease', 'MESH:D013274', (220, 242)) ('lung adenocarcinoma', 'Disease', 'MESH:D000077192', (256, 275)) ('corpus endometrial carcinoma', 'Disease', (53, 81)) ('lung squamous cell carcinoma', 'Disease', 'MESH:D002294', (293, 321)) ('corpus endometrial carcinoma', 'Disease', 'MESH:D016889', (53, 81)) ('colon adenocarcinoma (COAD) (49), skin cutaneous melanoma', 'Disease', 'MESH:D029424', (149, 206)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (298, 321)) ('lung squamous cell carcinoma', 'Disease', (293, 321)) ('lung adenocarcinoma', 'Phenotype', 'HP:0030078', (256, 275)) ('netrins', 'Gene', (21, 28)) ('carcinoma', 'Phenotype', 'HP:0030731', (266, 275)) ('carcinoma', 'Phenotype', 'HP:0030731', (312, 321)) ('cancer', 'Disease', 'MESH:D009369', (7, 13)) ('carcinoma', 'Phenotype', 'HP:0030731', (233, 242)) 29130 32251318 The total mutation rates of Netrin family members in the above six cancers were 10.19%, 12.28%, 10.06%, 9.61%, 6.70% and 7.32%, respectively. ('cancers', 'Phenotype', 'HP:0002664', (67, 74)) ('Netrin family', 'Gene', (28, 41)) ('cancers', 'Disease', (67, 74)) ('cancers', 'Disease', 'MESH:D009369', (67, 74)) ('mutation', 'Var', (10, 18)) ('cancer', 'Phenotype', 'HP:0002664', (67, 73)) 29132 32251318 However, the hot spot mutation P201Qfs*15 of NTN3 was identified in three patients, each with a different cancer (ESCA, STAD, UCEC), and encodes a truncated protein. ('STAD', 'Disease', (120, 124)) ('P201Qfs*15', 'Var', (31, 41)) ('NTN3', 'Gene', (45, 49)) ('cancer', 'Phenotype', 'HP:0002664', (106, 112)) ('patients', 'Species', '9606', (74, 82)) ('cancer', 'Disease', 'MESH:D009369', (106, 112)) ('ESCA', 'Phenotype', 'HP:0011459', (114, 118)) ('cancer', 'Disease', (106, 112)) ('NTN3', 'Gene', '4917', (45, 49)) 29133 32251318 E59K, one of the hotspot mutations of NTN4, was detected in four patients with three cancers (READ, COAD, and UCEC) and both VEST3 and REVEL algorithms indicated this change was dual-damaging. ('READ', 'Disease', (94, 98)) ('detected', 'Reg', (48, 56)) ('COAD', 'Disease', (100, 104)) ('NTN4', 'Gene', (38, 42)) ('cancers', 'Disease', 'MESH:D009369', (85, 92)) ('cancers', 'Phenotype', 'HP:0002664', (85, 92)) ('E59K', 'Var', (0, 4)) ('cancers', 'Disease', (85, 92)) ('NTN4', 'Gene', '59277', (38, 42)) ('E59K', 'Mutation', 'rs762617558', (0, 4)) ('patients', 'Species', '9606', (65, 73)) ('READ', 'Disease', '-', (94, 98)) ('COAD', 'Disease', 'MESH:D029424', (100, 104)) ('cancer', 'Phenotype', 'HP:0002664', (85, 91)) 29134 32251318 The hot spot mutation X342_splice of NTN5 occurred in two cancers (SKCM and UCEC) in two patients, and also encodes a truncated protein. ('occurred', 'Reg', (42, 50)) ('NTN5', 'Gene', '126147', (37, 41)) ('cancer', 'Phenotype', 'HP:0002664', (58, 64)) ('cancers', 'Phenotype', 'HP:0002664', (58, 65)) ('NTN5', 'Gene', (37, 41)) ('patients', 'Species', '9606', (89, 97)) ('cancers', 'Disease', 'MESH:D009369', (58, 65)) ('cancers', 'Disease', (58, 65)) ('X342_splice', 'Var', (22, 33)) 29135 32251318 The hot spot mutation R238C/H of NTNG1 was detected in three patients with three cancers (COAD, STAD, and UCEC), and R238C was predicted as damaging in VEST3 and REVEL algorithms. ('STAD', 'Disease', (96, 100)) ('COAD', 'Disease', 'MESH:D029424', (90, 94)) ('R238C', 'Var', (117, 122)) ('NTNG1', 'Gene', '22854', (33, 38)) ('R238C', 'SUBSTITUTION', 'None', (117, 122)) ('NTNG1', 'Gene', (33, 38)) ('R238C', 'Mutation', 'p.R238C', (117, 122)) ('cancers', 'Phenotype', 'HP:0002664', (81, 88)) ('patients', 'Species', '9606', (61, 69)) ('cancers', 'Disease', (81, 88)) ('cancers', 'Disease', 'MESH:D009369', (81, 88)) ('R238C', 'Var', (22, 27)) ('COAD', 'Disease', (90, 94)) ('R238C', 'Mutation', 'p.R238C', (22, 27)) ('R238C', 'SUBSTITUTION', 'None', (22, 27)) ('cancer', 'Phenotype', 'HP:0002664', (81, 87)) 29136 32251318 The NTNG2 hotspot mutation D226N/Rfs*141 occurred in three patients with three cancers (LAML, GBM, and COAD), and NTN1 hotspot mutation P459T was detected in three patients with two cancers (STAD, READ).The mutations in NTN1, NTN3, NTN4, NTNG1, and NTNG2 were mainly in the laminin-N domain, and most mutations of NTN5 were concentrated in the laminin_EGF2 domain. ('NTNG1', 'Gene', '22854', (238, 243)) ('NTNG2', 'Gene', (249, 254)) ('NTN1', 'Gene', '9423', (114, 118)) ('P459T', 'Mutation', 'rs376278603', (136, 141)) ('NTN4', 'Gene', (232, 236)) ('NTN1', 'Gene', (220, 224)) ('COAD', 'Disease', (103, 107)) ('NTN5', 'Gene', (314, 318)) ('D226N', 'SUBSTITUTION', 'None', (27, 32)) ('cancers', 'Phenotype', 'HP:0002664', (182, 189)) ('mutations', 'Var', (207, 216)) ('patients', 'Species', '9606', (59, 67)) ('cancers', 'Disease', (182, 189)) ('cancers', 'Phenotype', 'HP:0002664', (79, 86)) ('NTN5', 'Gene', '126147', (314, 318)) ('patients', 'Species', '9606', (164, 172)) ('cancer', 'Phenotype', 'HP:0002664', (182, 188)) ('cancers', 'Disease', (79, 86)) ('NTN1', 'Gene', '9423', (220, 224)) ('cancer', 'Phenotype', 'HP:0002664', (79, 85)) ('NTN4', 'Gene', '59277', (232, 236)) ('NTNG2', 'Gene', '84628', (4, 9)) ('D226N', 'Var', (27, 32)) ('NTN3', 'Gene', '4917', (226, 230)) ('NTNG2', 'Gene', '84628', (249, 254)) ('NTNG1', 'Gene', (238, 243)) ('NTN1', 'Gene', (114, 118)) ('READ', 'Disease', (197, 201)) ('cancers', 'Disease', 'MESH:D009369', (182, 189)) ('COAD', 'Disease', 'MESH:D029424', (103, 107)) ('READ', 'Disease', '-', (197, 201)) ('cancers', 'Disease', 'MESH:D009369', (79, 86)) ('NTN3', 'Gene', (226, 230)) ('NTNG2', 'Gene', (4, 9)) 29137 32251318 After screening by genetic ancestry groups and non-synonymous mutations, 62 patients had complete mutation information (64 mutations) for NTN1, 34 patients were included with complete mutation information (37 mutations) for NTN3, and 107 patients had complete mutation information (120 mutations) for NTN4. ('NTN4', 'Gene', (301, 305)) ('patients', 'Species', '9606', (76, 84)) ('NTN3', 'Gene', '4917', (224, 228)) ('NTN1', 'Gene', (138, 142)) ('NTN3', 'Gene', (224, 228)) ('NTN4', 'Gene', '59277', (301, 305)) ('NTN1', 'Gene', '9423', (138, 142)) ('patients', 'Species', '9606', (147, 155)) ('patients', 'Species', '9606', (238, 246)) ('mutations', 'Var', (123, 132)) 29138 32251318 Additionally, the data included 33 patients with 33 mutations in NTN5, 152 patient and 161 mutations in NTNG1, and 91 patients with 98 mutations in (Fig. ('mutations', 'Var', (52, 61)) ('patient', 'Species', '9606', (75, 82)) ('patient', 'Species', '9606', (35, 42)) ('NTN5', 'Gene', '126147', (65, 69)) ('patient', 'Species', '9606', (118, 125)) ('patients', 'Species', '9606', (35, 43)) ('NTNG1', 'Gene', '22854', (104, 109)) ('patients', 'Species', '9606', (118, 126)) ('NTN5', 'Gene', (65, 69)) ('NTNG1', 'Gene', (104, 109)) 29139 32251318 By comparing the data, we found that up to four netrin family members in individual patients contained mutations in four patients, three UCEC patients and one STAD patient with mutations in both NTN1 and NTNG2. ('mutations', 'Var', (103, 112)) ('patients', 'Species', '9606', (84, 92)) ('NTNG2', 'Gene', (204, 209)) ('patient', 'Species', '9606', (164, 171)) ('patient', 'Species', '9606', (121, 128)) ('patient', 'Species', '9606', (84, 91)) ('patient', 'Species', '9606', (142, 149)) ('contained', 'Reg', (93, 102)) ('NTN1', 'Gene', (195, 199)) ('patients', 'Species', '9606', (142, 150)) ('patients', 'Species', '9606', (121, 129)) ('NTNG2', 'Gene', '84628', (204, 209)) ('NTN1', 'Gene', '9423', (195, 199)) 29140 32251318 In cancer studies with at least five mutations in members of netrin genes (Fig. ('netrin genes', 'Gene', (61, 73)) ('cancer', 'Disease', 'MESH:D009369', (3, 9)) ('mutations', 'Var', (37, 46)) ('cancer', 'Disease', (3, 9)) ('cancer', 'Phenotype', 'HP:0002664', (3, 9)) 29141 32251318 2b), UCEC patients were one of the two highest among the cancers associated with the netrin family mutations, with most mutations in NTNG1. ('NTNG1', 'Gene', '22854', (133, 138)) ('UCEC', 'Disease', (5, 9)) ('NTNG1', 'Gene', (133, 138)) ('cancers', 'Phenotype', 'HP:0002664', (57, 64)) ('cancers', 'Disease', (57, 64)) ('cancers', 'Disease', 'MESH:D009369', (57, 64)) ('mutations', 'Var', (99, 108)) ('cancer', 'Phenotype', 'HP:0002664', (57, 63)) ('mutations', 'Var', (120, 129)) ('patients', 'Species', '9606', (10, 18)) 29142 32251318 SKCM has the most mutations in NTN4. ('NTN4', 'Gene', '59277', (31, 35)) ('NTN4', 'Gene', (31, 35)) ('mutations', 'Var', (18, 27)) 29143 32251318 2c), the highest number of cancer mutations among the four genetic ancestry groups was UCEC, and the netrin family mutations in STAD were mainly distributed in EAA and NA. ('netrin family', 'Gene', (101, 114)) ('cancer', 'Phenotype', 'HP:0002664', (27, 33)) ('mutations', 'Var', (115, 124)) ('cancer', 'Disease', (27, 33)) ('cancer', 'Disease', 'MESH:D009369', (27, 33)) ('mutations', 'Var', (34, 43)) 29144 32251318 Most netrin mutations in COAD occur in EA and AA. ('mutations', 'Var', (12, 21)) ('COAD', 'Disease', (25, 29)) ('COAD', 'Disease', 'MESH:D029424', (25, 29)) ('netrin', 'Gene', (5, 11)) 29145 32251318 2d,e) revealed that most mutations in netrins were in the laminin N-terminal domain, except for NTN5. ('NTN5', 'Gene', '126147', (96, 100)) ('mutations', 'Var', (25, 34)) ('netrins', 'Gene', (38, 45)) ('NTN5', 'Gene', (96, 100)) 29146 32251318 In the laminin EGF domains of NTN1, NTN3, NTN4, and NTN5, most mutations were in the laminin EGF-like 2 domain. ('mutations', 'Var', (63, 72)) ('NTN4', 'Gene', (42, 46)) ('NTN3', 'Gene', '4917', (36, 40)) ('NTN5', 'Gene', '126147', (52, 56)) ('NTN4', 'Gene', '59277', (42, 46)) ('NTN3', 'Gene', (36, 40)) ('NTN1', 'Gene', (30, 34)) ('NTN1', 'Gene', '9423', (30, 34)) ('NTN5', 'Gene', (52, 56)) 29147 32251318 In the NTNG1 laminin EGF domains, the mutation of laminin EGF-like 3 was the most frequent, and in the NTNG2 laminin EGF domains, the mutation of laminin EGF-like 1 was the most frequent. ('NTNG2', 'Gene', (103, 108)) ('mutation', 'Var', (134, 142)) ('frequent', 'Reg', (82, 90)) ('frequent', 'Reg', (178, 186)) ('laminin EGF-like 3', 'Gene', (50, 68)) ('NTNG1', 'Gene', '22854', (7, 12)) ('mutation', 'Var', (38, 46)) ('NTNG2', 'Gene', '84628', (103, 108)) ('NTNG1', 'Gene', (7, 12)) 29148 32251318 The mutations in the NTR domain were mainly concentrated in NTN1 and 4. ('NTR', 'Gene', (21, 24)) ('NTN1', 'Gene', (60, 64)) ('NTN1', 'Gene', '9423', (60, 64)) ('NTR', 'Gene', '4923', (21, 24)) ('mutations', 'Var', (4, 13)) 29158 32251318 Additionally, MLK1 enhanced cancer cell migration and invasion by epigenetic activation of MMP9 transcription in lung cancer. ('cancer', 'Disease', (118, 124)) ('lung cancer', 'Disease', (113, 124)) ('invasion', 'CPA', (54, 62)) ('cancer', 'Phenotype', 'HP:0002664', (28, 34)) ('MLK1', 'Gene', (14, 18)) ('lung cancer', 'Phenotype', 'HP:0100526', (113, 124)) ('epigenetic activation', 'Var', (66, 87)) ('transcription', 'MPA', (96, 109)) ('cancer', 'Phenotype', 'HP:0002664', (118, 124)) ('MLK1', 'Gene', '4293', (14, 18)) ('cancer', 'Disease', 'MESH:D009369', (28, 34)) ('lung cancer', 'Disease', 'MESH:D008175', (113, 124)) ('MMP9', 'Gene', (91, 95)) ('cancer', 'Disease', (28, 34)) ('cancer', 'Disease', 'MESH:D009369', (118, 124)) ('MMP9', 'Gene', '4318', (91, 95)) ('enhanced', 'PosReg', (19, 27)) 29193 32251318 5c) showed the survival was worse for hypomethylation of NTN1 in kidney renal papillary cell carcinoma (KIRP) and worse for NTNG1 in kidney renal clear cell carcinoma (KIRC), which is consistent with the correlation of high expression of NTN1 in KIRP and NTNG1 in KIRC with worse survival. ('carcinoma', 'Phenotype', 'HP:0030731', (93, 102)) ('hypomethylation', 'Var', (38, 53)) ('kidney renal papillary cell carcinoma', 'Disease', (65, 102)) ('kidney renal papillary cell carcinoma', 'Disease', 'MESH:D007681', (65, 102)) ('kidney renal clear cell carcinoma', 'Disease', 'MESH:C538614', (133, 166)) ('NTN1', 'Gene', (238, 242)) ('carcinoma', 'Phenotype', 'HP:0030731', (157, 166)) ('NTNG1', 'Gene', '22854', (255, 260)) ('NTN1', 'Gene', '9423', (57, 61)) ('NTN1', 'Gene', (57, 61)) ('NTN1', 'Gene', '9423', (238, 242)) ('NTNG1', 'Gene', (255, 260)) ('NTNG1', 'Gene', '22854', (124, 129)) ('kidney renal clear cell carcinoma', 'Disease', (133, 166)) ('NTNG1', 'Gene', (124, 129)) 29196 32251318 Methylation of NTN1, NTN3, NTN4, NTN5, and NTNG1 was associated with radiation therapy and overall survival of LGG. ('NTN3', 'Gene', (21, 25)) ('NTN4', 'Gene', (27, 31)) ('NTNG1', 'Gene', '22854', (43, 48)) ('Methylation', 'Var', (0, 11)) ('NTNG1', 'Gene', (43, 48)) ('NTN5', 'Gene', (33, 37)) ('NTN1', 'Gene', (15, 19)) ('NTN4', 'Gene', '59277', (27, 31)) ('radiation therapy', 'CPA', (69, 86)) ('NTN1', 'Gene', '9423', (15, 19)) ('associated with', 'Reg', (53, 68)) ('NTN3', 'Gene', '4917', (21, 25)) ('NTN5', 'Gene', '126147', (33, 37)) 29198 32251318 In pan-kidney (KIRP and KIRC), methylation of NTN4 was associated with pathology T stage and overall survival of KIRP and KIRC. ('methylation', 'Var', (31, 42)) ('associated', 'Reg', (55, 65)) ('NTN4', 'Gene', '59277', (46, 50)) ('NTN4', 'Gene', (46, 50)) 29199 32251318 Methylation of NTN1 and NTNG1 was associated with pathology T stage and pathology N stage of KIRP. ('associated', 'Reg', (34, 44)) ('Methylation', 'Var', (0, 11)) ('NTN1', 'Gene', (15, 19)) ('NTNG1', 'Gene', (24, 29)) ('NTN1', 'Gene', '9423', (15, 19)) ('NTNG1', 'Gene', '22854', (24, 29)) 29201 32251318 Methylation of NTN1 and NTN3 was associated with radiation therapy and pathology T stage of ESCA. ('NTN3', 'Gene', '4917', (24, 28)) ('NTN3', 'Gene', (24, 28)) ('Methylation', 'Var', (0, 11)) ('NTN1', 'Gene', (15, 19)) ('associated', 'Reg', (33, 43)) ('NTN1', 'Gene', '9423', (15, 19)) ('radiation therapy', 'Disease', (49, 66)) ('ESCA', 'Phenotype', 'HP:0011459', (92, 96)) 29202 32251318 Methylation of NTN3 was associated with pathology T stage, pathology N stage and number of lymph nodes of PRAD. ('Methylation', 'Var', (0, 11)) ('NTN3', 'Gene', (15, 19)) ('associated', 'Reg', (24, 34)) ('NTN3', 'Gene', '4917', (15, 19)) 29203 32251318 Methylation of NTN1, NTN3, NTN4, and NTNG1 was associated with PAM50 typing of BRCA, and NTNG1 was also associated with ER.Status and PR.Status. ('NTNG1', 'Gene', (37, 42)) ('ER.Status', 'Disease', (120, 129)) ('BRCA', 'Gene', (79, 83)) ('associated', 'Reg', (104, 114)) ('NTN1', 'Gene', (15, 19)) ('NTN4', 'Gene', '59277', (27, 31)) ('associated', 'Reg', (47, 57)) ('NTNG1', 'Gene', '22854', (37, 42)) ('Methylation', 'Var', (0, 11)) ('NTN1', 'Gene', '9423', (15, 19)) ('NTN3', 'Gene', '4917', (21, 25)) ('BRCA', 'Phenotype', 'HP:0003002', (79, 83)) ('NTNG1', 'Gene', (89, 94)) ('PAM50 typing', 'Var', (63, 75)) ('NTN3', 'Gene', (21, 25)) ('BRCA', 'Gene', '672', (79, 83)) ('NTN4', 'Gene', (27, 31)) ('PR.Status', 'Disease', (134, 143)) ('NTNG1', 'Gene', '22854', (89, 94)) 29204 32251318 In UCEC, methylation of NTN3, NTN4, NTNG1, and NTNG2 was associated with MSI phenotype. ('methylation', 'Var', (9, 20)) ('NTN3', 'Gene', '4917', (24, 28)) ('NTN4', 'Gene', (30, 34)) ('MSI', 'Disease', '-', (73, 76)) ('NTN3', 'Gene', (24, 28)) ('NTNG2', 'Gene', '84628', (47, 52)) ('NTNG1', 'Gene', '22854', (36, 41)) ('NTN4', 'Gene', '59277', (30, 34)) ('NTNG1', 'Gene', (36, 41)) ('NTNG2', 'Gene', (47, 52)) ('MSI', 'Disease', (73, 76)) ('associated', 'Reg', (57, 67)) 29208 32251318 Overexpression of EZH2 is also associated with the development of prostate cancer, and phosphorylated EZH2 can act as a co-activator of transcription factors, such as promoting the expression of AR. ('EZH2', 'Gene', (102, 106)) ('prostate cancer', 'Disease', 'MESH:D011471', (66, 81)) ('EZH2', 'Gene', '2146', (102, 106)) ('expression', 'MPA', (181, 191)) ('prostate cancer', 'Phenotype', 'HP:0012125', (66, 81)) ('EZH2', 'Gene', '2146', (18, 22)) ('associated', 'Reg', (31, 41)) ('cancer', 'Phenotype', 'HP:0002664', (75, 81)) ('phosphorylated', 'Var', (87, 101)) ('EZH2', 'Gene', (18, 22)) ('AR', 'Gene', '367', (195, 197)) ('prostate cancer', 'Disease', (66, 81)) ('promoting', 'PosReg', (167, 176)) 29223 32251318 Among the many statistically significant results, hsa-miR-361-3p had the strongest inhibitory effect on NTN1 in TCGT (r = 0.612), hsa-miR-33a-5p had the strongest inhibitory effect on NTN4 in TCGT and ESCA (r = -0.494), and hsa-miR-20b-5p had the strongest inhibitory effect on NTNG1 in DLBC (r = -0.528). ('inhibitory effect', 'MPA', (83, 100)) ('NTN4', 'Gene', '59277', (184, 188)) ('NTN1', 'Gene', (104, 108)) ('hsa-miR-361-3p', 'Gene', '100500908', (50, 64)) ('NTN1', 'Gene', '9423', (104, 108)) ('inhibitory effect', 'MPA', (163, 180)) ('hsa-miR-33a-5p', 'Var', (130, 144)) ('ESCA', 'Phenotype', 'HP:0011459', (201, 205)) ('NTN4', 'Gene', (184, 188)) ('NTNG1', 'Gene', '22854', (278, 283)) ('hsa-miR-361-3p', 'Gene', (50, 64)) ('NTNG1', 'Gene', (278, 283)) ('BC', 'Phenotype', 'HP:0003002', (289, 291)) 29229 32251318 The expression of NTN5 was affected by eQTL in BRCA, COAD, KIRC, KIRP, LGG, PRAD, and THCA. ('expression', 'MPA', (4, 14)) ('COAD', 'Disease', 'MESH:D029424', (53, 57)) ('eQTL', 'Var', (39, 43)) ('affected', 'Reg', (27, 35)) ('NTN5', 'Gene', '126147', (18, 22)) ('BRCA', 'Phenotype', 'HP:0003002', (47, 51)) ('THCA', 'Phenotype', 'HP:0002890', (86, 90)) ('BRCA', 'Gene', '672', (47, 51)) ('COAD', 'Disease', (53, 57)) ('NTN5', 'Gene', (18, 22)) ('BRCA', 'Gene', (47, 51)) 29232 32251318 Of these, 186 (74.4%) NTNG1 eQTLs were associated with AIDS and 57 (22.9%) were associated with non-obstructive azoospermia. ('NTNG1', 'Gene', '22854', (22, 27)) ('non-obstructive azoospermia', 'Disease', 'MESH:D053713', (96, 123)) ('NTNG1', 'Gene', (22, 27)) ('obstructive azoospermia', 'Phenotype', 'HP:0011962', (100, 123)) ('azoospermia', 'Phenotype', 'HP:0000027', (112, 123)) ('AIDS', 'Disease', (55, 59)) ('non-obstructive azoospermia', 'Disease', (96, 123)) ('associated', 'Reg', (80, 90)) ('associated', 'Reg', (39, 49)) ('AIDS', 'Disease', 'MESH:D000163', (55, 59)) ('eQTLs', 'Var', (28, 33)) ('non-obstructive azoospermia', 'Phenotype', 'HP:0011961', (96, 123)) 29235 32251318 Further, three eQTLs (rs9894790, rs9901637, and rs11650713) were found to affect the binding of MYC, TCF12, EBF1, EGR1, and NR2F2. ('rs11650713', 'Var', (48, 58)) ('rs11650713', 'Mutation', 'rs11650713', (48, 58)) ('MYC', 'Gene', (96, 99)) ('EBF1', 'Gene', '1879', (108, 112)) ('TCF12', 'Gene', '6938', (101, 106)) ('rs9894790', 'Var', (22, 31)) ('TCF12', 'Gene', (101, 106)) ('EGR1', 'Gene', (114, 118)) ('MYC', 'Gene', '4609', (96, 99)) ('NR2F2', 'Gene', '7026', (124, 129)) ('affect', 'Reg', (74, 80)) ('EGR1', 'Gene', '1958', (114, 118)) ('rs9894790', 'Mutation', 'rs9894790', (22, 31)) ('NR2F2', 'Gene', (124, 129)) ('rs9901637', 'Mutation', 'rs9901637', (33, 42)) ('rs9901637', 'Var', (33, 42)) ('EBF1', 'Gene', (108, 112)) ('binding', 'Interaction', (85, 92)) 29236 32251318 Additionally, high expression of NTN1 in thyroid carcinoma was correlated with a worse survival. ('carcinoma', 'Phenotype', 'HP:0030731', (49, 58)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (41, 58)) ('high', 'Var', (14, 18)) ('NTN1', 'Gene', '9423', (33, 37)) ('NTN1', 'Gene', (33, 37)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (41, 58)) ('thyroid carcinoma', 'Disease', (41, 58)) 29244 32251318 Highly expressed NTN4 is more sensitive to SRC inhibitors such as Dasatinib, WH-4-023, and AZD0530. ('NTN4', 'Gene', (17, 21)) ('SRC', 'Gene', '6714', (43, 46)) ('SRC', 'Gene', (43, 46)) ('more', 'PosReg', (25, 29)) ('NTN4', 'Gene', '59277', (17, 21)) ('WH-4-023', 'Chemical', '-', (77, 85)) ('AZD0530', 'Var', (91, 98)) ('AZD0530', 'Chemical', 'MESH:C515233', (91, 98)) ('Dasatinib', 'Chemical', 'MESH:D000069439', (66, 75)) 29256 32251318 In particular, ML162 and ML210 are compounds that target and change the mesenchymal state, inhibit GPX4 activity, and promote apoptosis. ('change', 'Reg', (61, 67)) ('GPX4', 'Gene', (99, 103)) ('GPX4', 'Gene', '2879', (99, 103)) ('inhibit', 'NegReg', (91, 98)) ('apoptosis', 'CPA', (126, 135)) ('ML162', 'Var', (15, 20)) ('mesenchymal state', 'CPA', (72, 89)) ('promote', 'PosReg', (118, 125)) ('ML210', 'Var', (25, 30)) 29265 32251318 Our findings are as follows: (1) members of the Netrin family are tightly regulated by multiple mechanisms at the genetic, transcriptional, and post-transcriptional levels; (2) mutations of members of the Netrin family correlate with tumor genetic characteristics; (3) Netrins may play important roles in the occurrence and development of endocrine system-related tumors and sex hormone targeting tumors; (4) Netrin family members may be promising prognostic indicators and potential therapeutic targets for lung and kidney cancer; (5) NTNG1 and NTNG2 are potential diagnostic markers and therapeutic targets that should be further studied systematically. ('tumor', 'Disease', (234, 239)) ('tumors', 'Phenotype', 'HP:0002664', (364, 370)) ('mutations', 'Var', (177, 186)) ('tumor', 'Phenotype', 'HP:0002664', (397, 402)) ('tumor', 'Disease', 'MESH:D009369', (234, 239)) ('tumors', 'Disease', (397, 403)) ('tumor', 'Phenotype', 'HP:0002664', (364, 369)) ('kidney cancer', 'Disease', 'MESH:D007680', (517, 530)) ('NTNG1', 'Gene', (536, 541)) ('tumors', 'Disease', (364, 370)) ('lung', 'Disease', (508, 512)) ('NTNG2', 'Gene', '84628', (546, 551)) ('tumors', 'Disease', 'MESH:D009369', (397, 403)) ('cancer', 'Phenotype', 'HP:0002664', (524, 530)) ('NTNG1', 'Gene', '22854', (536, 541)) ('tumor', 'Phenotype', 'HP:0002664', (234, 239)) ('kidney cancer', 'Phenotype', 'HP:0009726', (517, 530)) ('kidney cancer', 'Disease', (517, 530)) ('tumors', 'Disease', 'MESH:D009369', (364, 370)) ('tumor', 'Disease', (397, 402)) ('tumor', 'Disease', (364, 369)) ('tumor', 'Disease', 'MESH:D009369', (397, 402)) ('NTNG2', 'Gene', (546, 551)) ('tumors', 'Phenotype', 'HP:0002664', (397, 403)) ('tumor', 'Disease', 'MESH:D009369', (364, 369)) 29268 32251318 This study was the first comprehensive analysis of tumor genetic characteristics of mutations in members of the Netrin family. ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('tumor', 'Disease', (51, 56)) ('mutations', 'Var', (84, 93)) ('tumor', 'Disease', 'MESH:D009369', (51, 56)) ('Netrin', 'Gene', (112, 118)) 29269 32251318 We found that tumor mutations of members of the Netrin family showed a unique distribution pattern for cancer type, protein structure, and ethnic group. ('tumor', 'Disease', (14, 19)) ('cancer', 'Phenotype', 'HP:0002664', (103, 109)) ('tumor', 'Disease', 'MESH:D009369', (14, 19)) ('cancer', 'Disease', (103, 109)) ('cancer', 'Disease', 'MESH:D009369', (103, 109)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) ('mutations', 'Var', (20, 29)) 29270 32251318 It is worth noting that a significant number of missense or truncating mutations have been found in the Laminin N-terminal and EGF domains that interact with related receptors and the regulatory localization of the NTR domain. ('interact', 'Interaction', (144, 152)) ('truncating mutations', 'Var', (60, 80)) ('NTR', 'Gene', '4923', (215, 218)) ('missense', 'Var', (48, 56)) ('NTR', 'Gene', (215, 218)) ('Laminin', 'Protein', (104, 111)) 29273 32251318 Our mutation analysis found highly enriched mutation of netrin family genes in uterine corpus endometrial carcinoma. ('corpus endometrial carcinoma', 'Disease', 'MESH:D016889', (87, 115)) ('corpus endometrial carcinoma', 'Disease', (87, 115)) ('mutation', 'Var', (44, 52)) ('carcinoma', 'Phenotype', 'HP:0030731', (106, 115)) ('endometrial carcinoma', 'Phenotype', 'HP:0012114', (94, 115)) ('netrin family genes', 'Gene', (56, 75)) 29281 32251318 This study found that the NTN family not only has a high overall mutation rate in lung cancer, but that netrin activity is also closely related to the survival and clinical parameters of kidney cancer and non-small cell lung cancer. ('kidney cancer', 'Disease', (187, 200)) ('clinical', 'Species', '191496', (164, 172)) ('non-small cell lung cancer', 'Disease', 'MESH:D002289', (205, 231)) ('lung cancer', 'Phenotype', 'HP:0100526', (82, 93)) ('related', 'Reg', (136, 143)) ('lung cancer', 'Disease', (82, 93)) ('non-small cell lung cancer', 'Disease', (205, 231)) ('cancer', 'Phenotype', 'HP:0002664', (87, 93)) ('lung cancer', 'Phenotype', 'HP:0100526', (220, 231)) ('cancer', 'Phenotype', 'HP:0002664', (194, 200)) ('kidney cancer', 'Disease', 'MESH:D007680', (187, 200)) ('mutation', 'Var', (65, 73)) ('lung cancer', 'Disease', 'MESH:D008175', (82, 93)) ('non-small cell lung cancer', 'Phenotype', 'HP:0030358', (205, 231)) ('cancer', 'Phenotype', 'HP:0002664', (225, 231)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (209, 231)) ('kidney cancer', 'Phenotype', 'HP:0009726', (187, 200)) ('lung cancer', 'Disease', 'MESH:D008175', (220, 231)) 29289 32251318 Here we find that the expression or methylation of NTNG1 and NTNG2 is associated with survival and other clinical parameters of more than 10 types of cancer. ('cancer', 'Phenotype', 'HP:0002664', (150, 156)) ('NTNG2', 'Gene', '84628', (61, 66)) ('methylation', 'Var', (36, 47)) ('cancer', 'Disease', 'MESH:D009369', (150, 156)) ('clinical', 'Species', '191496', (105, 113)) ('associated', 'Reg', (70, 80)) ('cancer', 'Disease', (150, 156)) ('NTNG2', 'Gene', (61, 66)) ('NTNG1', 'Gene', '22854', (51, 56)) ('expression', 'MPA', (22, 32)) ('NTNG1', 'Gene', (51, 56)) 29290 32251318 There are also important epigenetic and transcriptional modifications of netrins that occur in pan-cancer that are related to the activation of the EMT pathway. ('cancer', 'Disease', 'MESH:D009369', (99, 105)) ('activation', 'PosReg', (130, 140)) ('EMT', 'Gene', (148, 151)) ('cancer', 'Disease', (99, 105)) ('EMT', 'Gene', '3702', (148, 151)) ('netrins', 'Gene', (73, 80)) ('cancer', 'Phenotype', 'HP:0002664', (99, 105)) ('epigenetic', 'Var', (25, 35)) 29292 32251318 It is worth noting that the mutations and potential mirRNA targeting of NTNG1 and NTNG2 in cancer exhibit rates that are much higher than those predicted for NTN1 and NTN4. ('NTN4', 'Gene', (167, 171)) ('NTN1', 'Gene', '9423', (158, 162)) ('NTNG2', 'Gene', '84628', (82, 87)) ('cancer', 'Disease', (91, 97)) ('cancer', 'Disease', 'MESH:D009369', (91, 97)) ('higher', 'PosReg', (126, 132)) ('NTN4', 'Gene', '59277', (167, 171)) ('NTNG2', 'Gene', (82, 87)) ('cancer', 'Phenotype', 'HP:0002664', (91, 97)) ('NTNG1', 'Gene', '22854', (72, 77)) ('NTNG1', 'Gene', (72, 77)) ('mutations', 'Var', (28, 37)) ('NTN1', 'Gene', (158, 162)) 29293 32251318 TCGA fusion transcripts analysis suggests the presence of fusion transcripts composed of NTNG1 or NTNG2 in multiple cancers. ('multiple cancers', 'Disease', (107, 123)) ('NTNG2', 'Gene', '84628', (98, 103)) ('NTNG1', 'Gene', '22854', (89, 94)) ('multiple cancers', 'Disease', 'MESH:D009369', (107, 123)) ('NTNG1', 'Gene', (89, 94)) ('fusion transcripts', 'Var', (58, 76)) ('cancers', 'Phenotype', 'HP:0002664', (116, 123)) ('cancer', 'Phenotype', 'HP:0002664', (116, 122)) ('NTNG2', 'Gene', (98, 103)) 29297 32251318 However, in some cancers, the selective inhibition of this receptor-dependent apoptosis pathway depends on the silencing of pro-apoptotic proteins. ('silencing', 'Var', (111, 120)) ('receptor-dependent apoptosis pathway', 'Pathway', (59, 95)) ('inhibition', 'NegReg', (40, 50)) ('cancers', 'Phenotype', 'HP:0002664', (17, 24)) ('cancers', 'Disease', (17, 24)) ('cancers', 'Disease', 'MESH:D009369', (17, 24)) ('cancer', 'Phenotype', 'HP:0002664', (17, 23)) 29341 32099962 At the molecular level, the dysregulation of myocardial beta2-adrenergic receptors, resulting in specific wall motion abnormalities with left ventricular apical hypokinesia and ballooning, is considered to be responsible. ('left ventricular apical hypokinesia and ballooning', 'Disease', 'MESH:D054549', (137, 187)) ('specific wall motion abnormalities', 'Phenotype', 'HP:0012667', (97, 131)) ('motion abnormalities', 'Disease', (111, 131)) ('motion abnormalities', 'Disease', 'MESH:D009041', (111, 131)) ('dysregulation', 'Var', (28, 41)) ('myocardial beta2-adrenergic receptors', 'Protein', (45, 82)) ('hypokinesia', 'Phenotype', 'HP:0002375', (161, 172)) ('specific', 'MPA', (97, 105)) 29444 32053635 Moreover, even when the all the samples were analyzed, participants with U-NM concentration above the cut-off value were significantly at risk for increased insulin resistance after adjustment for the confounding factors (OR: 2.73, p = 0.006, 95%CI: 1.34-5.57). ('U-NM', 'Var', (73, 77)) ('increased', 'PosReg', (147, 156)) ('U-NM', 'Chemical', '-', (73, 77)) ('U-NM', 'Phenotype', 'HP:0003345', (73, 77)) ('insulin resistance', 'Phenotype', 'HP:0000855', (157, 175)) ('insulin', 'Gene', (157, 164)) ('participants', 'Species', '9606', (55, 67)) ('insulin', 'Gene', '3630', (157, 164)) ('men', 'Species', '9606', (188, 191)) 29448 32053635 In these patients, CA concentrations has been shown to be positively associated with both insulin resistance and impairment of insulin secretion, both of which have been shown to be primary causes of the impaired glucose tolerance in such patients. ('impaired glucose tolerance', 'Disease', 'MESH:D018149', (204, 230)) ('patients', 'Species', '9606', (9, 17)) ('insulin resistance', 'Phenotype', 'HP:0000855', (90, 108)) ('impaired glucose tolerance', 'Disease', (204, 230)) ('impairment of insulin secretion', 'Disease', 'MESH:D007333', (113, 144)) ('CA concentrations', 'Var', (19, 36)) ('associated', 'Reg', (69, 79)) ('impairment of insulin secretion', 'Disease', (113, 144)) ('patients', 'Species', '9606', (239, 247)) ('insulin', 'Gene', (127, 134)) ('impaired glucose tolerance', 'Phenotype', 'HP:0040270', (204, 230)) ('insulin', 'Gene', (90, 97)) ('insulin', 'Gene', '3630', (127, 134)) ('insulin', 'Gene', '3630', (90, 97)) 29451 32053635 A previous study of patients with pheochromocytoma found that U-NM and U-M concentrations are differently associated with insulin resistance and insulin secretion: U-M is positively associated with impairment in insulin secretion, but not with insulin resistance, while U-NM is negatively associated with impairment of insulin secretion and positively associated with insulin resistance. ('impairment of insulin secretion', 'Disease', 'MESH:D007333', (305, 336)) ('insulin', 'Gene', '3630', (145, 152)) ('insulin', 'Gene', '3630', (368, 375)) ('insulin', 'Gene', (212, 219)) ('insulin', 'Gene', '3630', (319, 326)) ('insulin', 'Gene', (244, 251)) ('insulin', 'Gene', '3630', (122, 129)) ('insulin resistance', 'Phenotype', 'HP:0000855', (244, 262)) ('U-NM', 'Phenotype', 'HP:0003345', (62, 66)) ('U-NM', 'Chemical', '-', (270, 274)) ('insulin resistance', 'Phenotype', 'HP:0000855', (122, 140)) ('patients', 'Species', '9606', (20, 28)) ('insulin', 'Gene', (368, 375)) ('insulin', 'Gene', (145, 152)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (34, 50)) ('insulin resistance', 'Phenotype', 'HP:0000855', (368, 386)) ('impairment in insulin secretion', 'Disease', 'MESH:D007333', (198, 229)) ('insulin', 'Gene', (319, 326)) ('insulin', 'Gene', (122, 129)) ('insulin', 'Gene', '3630', (212, 219)) ('pheochromocytoma', 'Disease', (34, 50)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (34, 50)) ('insulin', 'Gene', '3630', (244, 251)) ('impairment of insulin secretion', 'Disease', (305, 336)) ('U-NM', 'Chemical', '-', (62, 66)) ('impairment in insulin secretion', 'Disease', (198, 229)) ('U-NM', 'Phenotype', 'HP:0003345', (270, 274)) ('U-M', 'Var', (164, 167)) 29452 32053635 In the current study of people with CA concentrations within the physiologic range, the relationship between CAs and HOMA indices also differed according to the type of CA, with U-NM concentrations being significantly associated with insulin resistance, but no other association being identified. ('associated with', 'Reg', (218, 233)) ('U-NM', 'Chemical', '-', (178, 182)) ('U-NM', 'Phenotype', 'HP:0003345', (178, 182)) ('CAs', 'Chemical', 'MESH:D002395', (109, 112)) ('HOMA', 'Chemical', '-', (117, 121)) ('insulin resistance', 'Phenotype', 'HP:0000855', (234, 252)) ('insulin', 'Gene', (234, 241)) ('insulin', 'Gene', '3630', (234, 241)) ('differed', 'Reg', (135, 143)) ('people', 'Species', '9606', (24, 30)) ('U-NM', 'Var', (178, 182)) 29543 32025984 Although desflurane elicits sympathetic activation, hypertension, and tachycardia when its inspired concentration exceeds 1.0 minimum alveolar concentration (MAC), it provides faster and tighter hemodynamic control than other volatile agents at lower than 1.0 MAC, suggesting that desflurane might be safely used during anesthesia for resection of pheochromocytomas. ('desflurane', 'Chemical', 'MESH:C053562', (281, 291)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (348, 364)) ('elicits', 'Reg', (20, 27)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (348, 365)) ('desflurane', 'Var', (9, 19)) ('tachycardia', 'Phenotype', 'HP:0001649', (70, 81)) ('tachycardia', 'Disease', (70, 81)) ('hemodynamic control', 'MPA', (195, 214)) ('hypertension', 'Disease', 'MESH:D006973', (52, 64)) ('sympathetic activation', 'MPA', (28, 50)) ('tachycardia', 'Disease', 'MESH:D013610', (70, 81)) ('desflurane', 'Chemical', 'MESH:C053562', (9, 19)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (348, 365)) ('hypertension', 'Disease', (52, 64)) ('pheochromocytomas', 'Disease', (348, 365)) ('hypertension', 'Phenotype', 'HP:0000822', (52, 64)) 29576 32025984 Increased plasma catecholamine levels, an extra-adrenal mass at computed tomography, and uptake of 123I-MIBG lead to the diagnosis. ('uptake', 'CPA', (89, 95)) ('catecholamine', 'Chemical', 'MESH:D002395', (17, 30)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (99, 108)) ('123I-MIBG', 'Var', (99, 108)) ('plasma catecholamine levels', 'MPA', (10, 37)) ('Increased', 'PosReg', (0, 9)) ('Increased plasma catecholamine', 'Phenotype', 'HP:0003334', (0, 30)) 29587 32025984 Another study showed that peripheral sympathetic activity was significantly increased after pheochromocytoma surgery, despite decreased blood pressure, heart rate, and circulating catecholamine levels compared with those before surgery. ('decreased blood pressure', 'Phenotype', 'HP:0002615', (126, 150)) ('decreased', 'NegReg', (126, 135)) ('heart rate', 'MPA', (152, 162)) ('increased', 'PosReg', (76, 85)) ('pheochromocytoma', 'Disease', (92, 108)) ('blood pressure', 'MPA', (136, 150)) ('peripheral sympathetic activity', 'MPA', (26, 57)) ('circulating catecholamine levels', 'MPA', (168, 200)) ('catecholamine', 'Chemical', 'MESH:D002395', (180, 193)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (92, 108)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (92, 108)) ('surgery', 'Var', (109, 116)) 29598 31856921 Paragangliomas and pheochromocytomas can be sporadic or familial, the latter frequently being multifocal and possibly due to succinate dehydrogenase complex genes mutations. ('mutations', 'Var', (163, 172)) ('succinate dehydrogenase', 'Gene', '6390', (125, 148)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (19, 35)) ('succinate dehydrogenase', 'Gene', (125, 148)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (0, 14)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (19, 36)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('Paragangliomas and pheochromocytomas', 'Disease', 'MESH:D010673', (0, 36)) 29599 31856921 In addition, 12% of sporadic paragangliomas are related to covered succinate dehydrogenase complex mutations. ('mutations', 'Var', (99, 108)) ('paragangliomas', 'Disease', (29, 43)) ('paragangliomas', 'Disease', 'MESH:D010235', (29, 43)) ('succinate dehydrogenase', 'Gene', '6390', (67, 90)) ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) ('paragangliomas', 'Phenotype', 'HP:0002668', (29, 43)) ('succinate dehydrogenase', 'Gene', (67, 90)) ('related', 'Reg', (48, 55)) 29600 31856921 The importance of identifying succinate dehydrogenase complex mutations is related to the risk for these patients of developing multiple tumors, including non-endocrine ones, showing an aggressive clinical presentation. ('succinate dehydrogenase', 'Gene', (30, 53)) ('succinate dehydrogenase', 'Gene', '6390', (30, 53)) ('tumors', 'Disease', (137, 143)) ('patients', 'Species', '9606', (105, 113)) ('tumors', 'Disease', 'MESH:D009369', (137, 143)) ('tumors', 'Phenotype', 'HP:0002664', (137, 143)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) ('mutations', 'Var', (62, 71)) 29602 31856921 He was found to carry a germline Succinate dehydrogenase subunit B gene (SDHB) mutation. ('Succinate dehydrogenase', 'Gene', '6390', (33, 56)) ('mutation', 'Var', (79, 87)) ('SDHB', 'Gene', '6390', (73, 77)) ('Succinate dehydrogenase', 'Gene', (33, 56)) ('SDHB', 'Gene', (73, 77)) 29603 31856921 It is crucial to look for a second malignancy in the case of a paraganglioma demonstrating succinate dehydrogenase complex germline mutations. ('succinate dehydrogenase', 'Gene', (91, 114)) ('malignancy', 'Disease', 'MESH:D009369', (35, 45)) ('paraganglioma', 'Phenotype', 'HP:0002668', (63, 76)) ('malignancy', 'Disease', (35, 45)) ('paraganglioma', 'Disease', (63, 76)) ('germline mutations', 'Var', (123, 141)) ('succinate dehydrogenase', 'Gene', '6390', (91, 114)) ('paraganglioma', 'Disease', 'MESH:D010235', (63, 76)) 29606 31856921 Succinate dehydrogenase (SDH) germline mutations represent a possible cause of hereditary PPGL, but have also been reported in 12% of sporadic cases. ('SDH', 'Gene', (25, 28)) ('Succinate dehydrogenase', 'Gene', (0, 23)) ('germline mutations', 'Var', (30, 48)) ('cause', 'Reg', (70, 75)) ('PPGL', 'Disease', (90, 94)) ('Succinate dehydrogenase', 'Gene', '6390', (0, 23)) ('PGL', 'Phenotype', 'HP:0002668', (91, 94)) ('SDH', 'Gene', '6390', (25, 28)) 29610 31856921 This case report describes the association of a neck PGL with a follicular lymphoma in a patient with a germline SDHB mutation. ('SDHB', 'Gene', '6390', (113, 117)) ('patient', 'Species', '9606', (89, 96)) ('PGL', 'Phenotype', 'HP:0002668', (53, 56)) ('lymphoma', 'Disease', 'MESH:D008223', (75, 83)) ('lymphoma', 'Phenotype', 'HP:0002665', (75, 83)) ('association', 'Interaction', (31, 42)) ('SDHB', 'Gene', (113, 117)) ('mutation', 'Var', (118, 126)) ('neck PGL', 'Disease', (48, 56)) ('lymphoma', 'Disease', (75, 83)) 29618 31856921 According to current guidelines, our patient was submitted to genetic testing, including investigation for germline RET and succinate dehydrogenase complex (SDHx) mutations. ('mutations', 'Var', (163, 172)) ('patient', 'Species', '9606', (37, 44)) ('SDH', 'Gene', (157, 160)) ('RET', 'Gene', (116, 119)) ('succinate dehydrogenase', 'Gene', (124, 147)) ('succinate dehydrogenase', 'Gene', '6390', (124, 147)) ('SDH', 'Gene', '6390', (157, 160)) ('RET', 'Gene', '5979', (116, 119)) 29620 31856921 Germline SDHx mutation testing was performed on leukocyte DNA by a next-generation sequencing (NGS) method based on capture technology (probe; IDT), evaluating the presence of point mutations, small deletions, or insertion mutations in the coding region of the SDHB, SDHA, SDHD, SDHAF2, SDHC genes and flanking intronic regions by amplification and direct sequencing. ('small deletions', 'Var', (193, 208)) ('SDH', 'Gene', (267, 270)) ('insertion mutations', 'Var', (213, 232)) ('SDHA', 'Gene', (279, 283)) ('SDHD', 'Gene', (273, 277)) ('SDH', 'Gene', '6390', (9, 12)) ('SDH', 'Gene', '6390', (287, 290)) ('SDHA', 'Gene', '6389', (279, 283)) ('SDHB', 'Gene', '6390', (261, 265)) ('SDHC', 'Gene', '6391', (287, 291)) ('SDH', 'Gene', (273, 276)) ('SDH', 'Gene', '6390', (261, 264)) ('SDHAF2', 'Gene', (279, 285)) ('SDHAF2', 'Gene', '54949', (279, 285)) ('SDH', 'Gene', (279, 282)) ('SDH', 'Gene', (9, 12)) ('SDHB', 'Gene', (261, 265)) ('SDH', 'Gene', (287, 290)) ('SDH', 'Gene', (261, 264)) ('SDH', 'Gene', '6390', (267, 270)) ('SDHA', 'Gene', (267, 271)) ('SDHC', 'Gene', (287, 291)) ('point mutations', 'Var', (176, 191)) ('SDHD', 'Gene', '6392', (273, 277)) ('SDHA', 'Gene', '6389', (267, 271)) ('SDH', 'Gene', '6390', (273, 276)) ('SDH', 'Gene', '6390', (279, 282)) 29621 31856921 The results of the genetic test of our patient showed the presence of a germline mutation in exon 7 of the SDHB gene. ('patient', 'Species', '9606', (39, 46)) ('SDHB', 'Gene', (107, 111)) ('presence', 'Reg', (58, 66)) ('germline mutation in', 'Var', (72, 92)) ('SDHB', 'Gene', '6390', (107, 111)) 29623 31856921 This variant causes the replacement of the amino acid arginine with a histidine at SDHB protein codon 230. ('arginine', 'Chemical', 'MESH:D001120', (54, 62)) ('SDHB', 'Gene', (83, 87)) ('histidine', 'Chemical', 'MESH:D006639', (70, 79)) ('replacement', 'Var', (24, 35)) ('causes', 'Reg', (13, 19)) ('SDHB', 'Gene', '6390', (83, 87)) 29627 31856921 Due to the presence of a germline SDHB gene mutation, a second malignancy was suspected; therefore, accurate histology examination was also pursued for the neck lymph nodes resected during surgery. ('mutation', 'Var', (44, 52)) ('malignancy', 'Disease', 'MESH:D009369', (63, 73)) ('malignancy', 'Disease', (63, 73)) ('SDHB', 'Gene', '6390', (34, 38)) ('SDHB', 'Gene', (34, 38)) 29633 31856921 A carotid PGL in a SDHB gene mutation carrier is rarely the first manifestation, since SDHB-related PGLs are usually found in extra-adrenal abdominal sites. ('mutation', 'Var', (29, 37)) ('SDHB', 'Gene', '6390', (19, 23)) ('SDHB', 'Gene', (19, 23)) ('PGL', 'Phenotype', 'HP:0002668', (10, 13)) ('PGL', 'Phenotype', 'HP:0002668', (100, 103)) ('SDHB', 'Gene', '6390', (87, 91)) ('SDHB', 'Gene', (87, 91)) 29645 31856921 Among the reported malignancies associated with SDHx mutations, the presence of a malignant B cell lymphoma has been reported only in one Japanese patient bearing a G106D alteration in exon 4 of the SDHD gene, who developed the disease 5 years after PGL surgery. ('G106D alteration in', 'Var', (165, 184)) ('SDH', 'Gene', '6390', (199, 202)) ('G106D', 'Mutation', 'p.G106D', (165, 170)) ('malignancies', 'Disease', (19, 31)) ('SDH', 'Gene', '6390', (48, 51)) ('B cell lymphoma', 'Phenotype', 'HP:0012191', (92, 107)) ('patient', 'Species', '9606', (147, 154)) ('malignant B cell lymphoma', 'Disease', (82, 107)) ('SDH', 'Gene', (199, 202)) ('SDHD', 'Gene', (199, 203)) ('mutations', 'Var', (53, 62)) ('lymphoma', 'Phenotype', 'HP:0002665', (99, 107)) ('SDH', 'Gene', (48, 51)) ('SDHD', 'Gene', '6392', (199, 203)) ('malignant B cell lymphoma', 'Disease', 'MESH:D016393', (82, 107)) ('malignancies', 'Disease', 'MESH:D009369', (19, 31)) ('developed', 'Reg', (214, 223)) ('PGL', 'Phenotype', 'HP:0002668', (250, 253)) 29646 31856921 In addition, genetic derangements in the SDHD gene have been found in other cases: a silent single nucleotide polymorphism was identified in three Burkitt's lymphoma cell lines and in one Burkitt's lymphoma sample. ('lymphoma', 'Phenotype', 'HP:0002665', (198, 206)) ("Burkitt's lymphoma", 'Phenotype', 'HP:0030080', (147, 165)) ("Burkitt's lymphoma", 'Disease', 'MESH:D002051', (188, 206)) ("Burkitt's lymphoma", 'Disease', 'MESH:D002051', (147, 165)) ('lymphoma', 'Phenotype', 'HP:0002665', (157, 165)) ('SDHD', 'Gene', '6392', (41, 45)) ("Burkitt's lymphoma", 'Disease', (188, 206)) ("Burkitt's lymphoma", 'Disease', (147, 165)) ('SDHD', 'Gene', (41, 45)) ('single nucleotide polymorphism', 'Var', (92, 122)) ("Burkitt's lymphoma", 'Phenotype', 'HP:0030080', (188, 206)) 29651 31856921 To date, studies reporting a predisposition to lymphoid malignancies in patients with SDHx mutations are still lacking; also, SDHx genes are not routinely evaluated in individuals with non-endocrine cancers. ('SDH', 'Gene', '6390', (126, 129)) ('SDH', 'Gene', '6390', (86, 89)) ('non-endocrine cancers', 'Disease', (185, 206)) ('SDH', 'Gene', (126, 129)) ('lymphoid malignancies', 'Disease', 'MESH:D008223', (47, 68)) ('lymphoid malignancies', 'Disease', (47, 68)) ('SDH', 'Gene', (86, 89)) ('lymphoid malignancies', 'Phenotype', 'HP:0002665', (47, 68)) ('mutations', 'Var', (91, 100)) ('cancers', 'Phenotype', 'HP:0002664', (199, 206)) ('non-endocrine cancers', 'Disease', 'MESH:D004701', (185, 206)) ('patients', 'Species', '9606', (72, 80)) 29687 31574816 Genetic investigation was negative for RET proto-oncogene, Von Hippel-Lindau, succinate dehydrogenase B, succinate dehydrogenase C, and succinate dehydrogenase D mutations. ('RET', 'Gene', (39, 42)) ('mutations', 'Var', (162, 171)) ('succinate', 'Chemical', 'MESH:D013386', (78, 87)) ('succinate', 'Chemical', 'MESH:D013386', (105, 114)) ('succinate', 'Chemical', 'MESH:D013386', (136, 145)) ('RET', 'Gene', '5979', (39, 42)) ('Von Hippel-Lindau', 'Disease', 'MESH:D006623', (59, 76)) ('Von Hippel-Lindau', 'Disease', (59, 76)) 16577 31574816 The improved survival benefited from reducing the tumor burden, decompressing the spinal stenosis to alleviate radiculopathy, and facilitating subsequent chemotherapy and radiation therapy. ('radiculopathy', 'Disease', 'MESH:D011843', (111, 124)) ('radiculopathy', 'Disease', (111, 124)) ('spinal stenosis', 'Disease', (82, 97)) ('spinal stenosis', 'Disease', 'MESH:D013130', (82, 97)) ('tumor', 'Disease', 'MESH:D009369', (50, 55)) ('spinal stenosis', 'Phenotype', 'HP:0003416', (82, 97)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('decompressing', 'Var', (64, 77)) ('tumor', 'Disease', (50, 55)) 29726 30291194 Efficacy and Safety of High-Specific-Activity 131I-MIBG Therapy in Patients with Advanced Pheochromocytoma or Paraganglioma Patients with metastatic or unresectable (advanced) pheochromocytoma and paraganglioma (PPGL) have poor prognoses and few treatment options. ('131I-MIBG', 'Var', (46, 55)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (176, 192)) ('paraganglioma', 'Phenotype', 'HP:0002668', (197, 210)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (90, 106)) ('Advanced Pheochromocytoma or Paraganglioma', 'Disease', (81, 123)) ('Patients', 'Species', '9606', (67, 75)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (110, 123)) ('131I-MIBG', 'Chemical', '-', (46, 55)) ('Advanced Pheochromocytoma or Paraganglioma', 'Disease', 'MESH:D010673', (81, 123)) ('Patients', 'Species', '9606', (124, 132)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (176, 210)) ('men', 'Species', '9606', (251, 254)) 29742 30291194 Shorter survival has been correlated with synchronous metastases, large primary tumor size, dependence on primary tumor location, germline mutations of the succinate dehydrogenase subunit B gene, and unresectable primary tumor. ('tumor', 'Disease', 'MESH:D009369', (80, 85)) ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('germline mutations', 'Var', (130, 148)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('tumor', 'Phenotype', 'HP:0002664', (221, 226)) ('tumor', 'Disease', (221, 226)) ('tumor', 'Disease', (80, 85)) ('tumor', 'Disease', (114, 119)) ('synchronous metastases', 'Disease', 'MESH:D009362', (42, 64)) ('Shorter', 'NegReg', (0, 7)) ('tumor', 'Disease', 'MESH:D009369', (221, 226)) ('synchronous metastases', 'Disease', (42, 64)) 29785 30291194 A reduction in antihypertensive medication was considered if the patient's systolic and diastolic BP values were less than 140 mm Hg and less than 90 mm Hg, respectively, as measured with a manual mercury sphygmomanometer. ('less', 'NegReg', (113, 117)) ('less', 'Var', (137, 141)) ('reduction', 'NegReg', (2, 11)) ('antihypertensive medication', 'Phenotype', 'HP:0000822', (15, 42)) ('systolic', 'MPA', (75, 83)) ('diastolic BP values', 'MPA', (88, 107)) ('hypertensive', 'Disease', 'MESH:D006973', (19, 31)) ('patient', 'Species', '9606', (65, 72)) ('hypertensive', 'Disease', (19, 31)) 29850 30291194 Our findings show that HSA 131I-MIBG conferred sustained control of catecholamine-associated hypertension in 25% of patients and had persistent antitumor effects in 22% of patients with advanced PPGL. ('hypertension', 'Phenotype', 'HP:0000822', (93, 105)) ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('control', 'MPA', (57, 64)) ('catecholamine', 'Chemical', 'MESH:D002395', (68, 81)) ('tumor', 'Disease', 'MESH:D009369', (148, 153)) ('patients', 'Species', '9606', (116, 124)) ('tumor', 'Disease', (148, 153)) ('HSA 131I-MIBG', 'Chemical', '-', (23, 36)) ('hypertension', 'Disease', 'MESH:D006973', (93, 105)) ('HSA 131I-MIBG', 'Var', (23, 36)) ('patients', 'Species', '9606', (172, 180)) ('hypertension', 'Disease', (93, 105)) 29870 30291194 Furthermore, among patients who received at least 1 therapeutic dose, the proportion of those who had PRs increased from 6% at 3 mo to 23% at 12 mo, indicating that HSA 131I-MIBG has persistent antitumor effects. ('patients', 'Species', '9606', (19, 27)) ('tumor', 'Disease', 'MESH:D009369', (198, 203)) ('PRs', 'Chemical', '-', (102, 105)) ('tumor', 'Phenotype', 'HP:0002664', (198, 203)) ('tumor', 'Disease', (198, 203)) ('HSA 131I-MIBG', 'Chemical', '-', (165, 178)) ('HSA 131I-MIBG', 'Var', (165, 178)) 29874 30291194 In addition, effects observed with HSA 131I-MIBG during the long-term follow-up phase, including myelodysplastic syndrome and secondary malignancies such as acute myeloid leukemia and acute lymphocytic leukemia, are also known to occur after cytotoxic therapies, including high-dose conventional 131I-MIBG and peptide receptor radionuclide therapy. ('myeloid leukemia', 'Phenotype', 'HP:0012324', (163, 179)) ('leukemia', 'Phenotype', 'HP:0001909', (171, 179)) ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (157, 179)) ('131I-MIBG', 'Var', (39, 48)) ('131I-MIBG', 'Chemical', '-', (296, 305)) ('HSA 131I-MIBG', 'Chemical', '-', (35, 48)) ('myelodysplastic syndrome', 'Phenotype', 'HP:0002863', (97, 121)) ('acute myeloid leukemia', 'Disease', (157, 179)) ('acute lymphocytic leukemia', 'Phenotype', 'HP:0006721', (184, 210)) ('leukemia', 'Phenotype', 'HP:0001909', (202, 210)) ('acute lymphocytic leukemia', 'Disease', (184, 210)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (157, 179)) ('myelodysplastic syndrome', 'Disease', (97, 121)) ('secondary malignancies', 'Disease', 'MESH:D009369', (126, 148)) ('myelodysplastic syndrome', 'Disease', 'MESH:D009190', (97, 121)) ('131I-MIBG', 'Chemical', '-', (39, 48)) ('acute lymphocytic leukemia', 'Disease', 'MESH:D054198', (184, 210)) ('secondary malignancies', 'Disease', (126, 148)) 29883 30291194 The findings of the present study demonstrate that HSA 131I-MIBG can provide a clinical benefit to patients with advanced PPGL, as evidenced by improved BP control and by durable tumor and biochemical tumor marker responses. ('improved', 'PosReg', (144, 152)) ('PPGL', 'Disease', (122, 126)) ('HSA 131I-MIBG', 'Chemical', '-', (51, 64)) ('HSA 131I-MIBG', 'Var', (51, 64)) ('tumor', 'Disease', 'MESH:D009369', (201, 206)) ('patients', 'Species', '9606', (99, 107)) ('tumor', 'Disease', 'MESH:D009369', (179, 184)) ('tumor', 'Phenotype', 'HP:0002664', (201, 206)) ('tumor', 'Phenotype', 'HP:0002664', (179, 184)) ('tumor', 'Disease', (201, 206)) ('BP control', 'MPA', (153, 163)) ('tumor', 'Disease', (179, 184)) 29888 30291194 Furthermore, HSA 131I-MIBG was associated with BP improvement and an acceptable safety profile. ('HSA 131I-MIBG', 'Chemical', '-', (13, 26)) ('men', 'Species', '9606', (57, 60)) ('HSA 131I-MIBG', 'Var', (13, 26)) ('improvement', 'PosReg', (50, 61)) 29899 28685506 As nearly half of all pheochromocytoma patients harbor a mutation in one of the 14 tumor susceptibility genes, genetic testing and counseling should at least be considered in all patients with a proven tumor. ('mutation', 'Var', (57, 65)) ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('patients', 'Species', '9606', (39, 47)) ('tumor', 'Disease', (202, 207)) ('tumor', 'Disease', (83, 88)) ('pheochromocytoma', 'Disease', (22, 38)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (22, 38)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (22, 38)) ('patients', 'Species', '9606', (179, 187)) ('tumor', 'Disease', 'MESH:D009369', (202, 207)) ('tumor', 'Disease', 'MESH:D009369', (83, 88)) ('tumor', 'Phenotype', 'HP:0002664', (202, 207)) 29912 28685506 PPGLs in childhood have a preponderance of extra-adrenal and multifocal tumors and carry an increased prevalence of mutations in one of the PPGL susceptibility genes. ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('extra-adrenal', 'Disease', (43, 56)) ('PPGLs', 'Chemical', '-', (0, 5)) ('tumors', 'Phenotype', 'HP:0002664', (72, 78)) ('mutations', 'Var', (116, 125)) ('PPGL', 'Chemical', '-', (140, 144)) ('PPGL', 'Gene', (140, 144)) ('PPGL', 'Chemical', '-', (0, 4)) ('multifocal tumors', 'Disease', (61, 78)) ('multifocal tumors', 'Disease', 'None', (61, 78)) 29919 28685506 The overall prevalence of metastatic disease among patients with PPGLs is 10% to 15%, but may amount to 30% to 40% in the presence of specific risk factors: young age, genetic background in particular succinate dehydrogenase B (SDHB) mutations, large tumor size, dopaminergic phenotype, multifocal tumors, and extra-adrenal location. ('tumors', 'Phenotype', 'HP:0002664', (298, 304)) ('tumor', 'Disease', (251, 256)) ('tumor', 'Disease', (298, 303)) ('metastatic disease', 'Disease', (26, 44)) ('SDHB', 'Gene', '6390', (228, 232)) ('tumor', 'Phenotype', 'HP:0002664', (251, 256)) ('tumor', 'Phenotype', 'HP:0002664', (298, 303)) ('SDHB', 'Gene', (228, 232)) ('PPGLs', 'Chemical', '-', (65, 70)) ('succinate dehydrogenase B', 'Gene', '6390', (201, 226)) ('succinate dehydrogenase B', 'Gene', (201, 226)) ('patients', 'Species', '9606', (51, 59)) ('tumor', 'Disease', 'MESH:D009369', (298, 303)) ('tumor', 'Disease', 'MESH:D009369', (251, 256)) ('dopamine', 'Chemical', 'MESH:D004298', (263, 271)) ('multifocal tumors', 'Disease', (287, 304)) ('mutations', 'Var', (234, 243)) ('multifocal tumors', 'Disease', 'None', (287, 304)) 29927 28685506 Exceptions are rare patients with biochemically silent tumors who carry an SDHB mutation. ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('SDHB', 'Gene', '6390', (75, 79)) ('tumors', 'Phenotype', 'HP:0002664', (55, 61)) ('patients', 'Species', '9606', (20, 28)) ('tumors', 'Disease', 'MESH:D009369', (55, 61)) ('tumors', 'Disease', (55, 61)) ('SDHB', 'Gene', (75, 79)) ('mutation', 'Var', (80, 88)) 29973 28685506 The sensitivity of 123I-MIBG SPECT for detection of adrenal pheochromocytoma is excellent (nearly 100%), but is unacceptably low for extra-adrenal paragangliomas (56% to 75%) and metastases, particularly when associated with underlying succinate dehydrogenase (SDHx) mutations (<50%). ('to 7', 'Species', '1214577', (167, 171)) ('extra-adrenal paragangliomas', 'Disease', (133, 161)) ('paraganglioma', 'Phenotype', 'HP:0002668', (147, 160)) ('paragangliomas', 'Phenotype', 'HP:0002668', (147, 161)) ('mutations', 'Var', (267, 276)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (52, 76)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (60, 76)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (52, 76)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (133, 161)) ('metastases', 'Disease', (179, 189)) ('SDHx', 'Gene', (261, 265)) ('SDHx', 'Chemical', '-', (261, 265)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (19, 28)) ('adrenal pheochromocytoma', 'Disease', (52, 76)) ('metastases', 'Disease', 'MESH:D009362', (179, 189)) 29982 28685506 About 40% of all patients with a PPGL have a germline mutation in one of the 12 susceptibility genes and in 11% to 13% of all apparent sporadic cases a germline mutation can be detected. ('PPGL', 'Disease', (33, 37)) ('germline mutation', 'Var', (45, 62)) ('patients', 'Species', '9606', (17, 25)) ('PPGL', 'Chemical', '-', (33, 37)) 29986 28685506 The genes most frequently mutated are SDHB and VHL while MAX, TMEM127, MDH2, SDHAF2, and FH are least frequently mutated. ('MAX', 'Gene', (57, 60)) ('TMEM127', 'Gene', '55654', (62, 69)) ('MDH2', 'Gene', '4191', (71, 75)) ('MAX', 'Gene', '4149', (57, 60)) ('VHL', 'Gene', (47, 50)) ('mutated', 'Var', (26, 33)) ('FH', 'Gene', '2271', (89, 91)) ('SDHAF2', 'Gene', '54949', (77, 83)) ('SDHB', 'Gene', '6390', (38, 42)) ('VHL', 'Gene', '7428', (47, 50)) ('SDHAF2', 'Gene', (77, 83)) ('SDHB', 'Gene', (38, 42)) ('MDH2', 'Gene', (71, 75)) ('TMEM127', 'Gene', (62, 69)) 29987 28685506 Mutations of SDHB gene are associated with an increased risk of development of metastatic disease (40% to 60%) and mutation testing for this gene is particularly indicated in patients with extra-adrenal tumors (paragangliomas), particularly when large tumors or when producing 3-methoxytyramine. ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (277, 294)) ('SDHB', 'Gene', '6390', (13, 17)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (195, 208)) ('tumors', 'Phenotype', 'HP:0002664', (252, 258)) ('paragangliomas', 'Disease', (211, 225)) ('extra-adrenal tumors', 'Disease', (189, 209)) ('tumors', 'Phenotype', 'HP:0002664', (203, 209)) ('Mutations', 'Var', (0, 9)) ('tumor', 'Phenotype', 'HP:0002664', (252, 257)) ('SDHB', 'Gene', (13, 17)) ('paraganglioma', 'Phenotype', 'HP:0002668', (211, 224)) ('indicated', 'Reg', (162, 171)) ('tumors', 'Disease', (252, 258)) ('extra-adrenal tumors', 'Disease', 'MESH:D010236', (189, 209)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('tumors', 'Disease', (203, 209)) ('paragangliomas', 'Disease', 'MESH:D010235', (211, 225)) ('paragangliomas', 'Phenotype', 'HP:0002668', (211, 225)) ('tumors', 'Disease', 'MESH:D009369', (252, 258)) ('tumors', 'Disease', 'MESH:D009369', (203, 209)) ('metastatic disease', 'CPA', (79, 97)) ('patients', 'Species', '9606', (175, 183)) 29989 28685506 Cluster 1 tumors develop in patients with germline or somatic mutations in VHL, SDHB, SDHD, SDHC, SDHAF2, SDHAF2, hypoxia inducible factor 2alpha (HIF2alpha), prolyl hydroxylase 2 (PHD2), MDH2, FH genes and involve activation of hypoxia-angiogenic pathways. ('MDH2', 'Gene', (188, 192)) ('hypoxia inducible factor 2alpha', 'Gene', '2034', (114, 145)) ('tumors', 'Disease', (10, 16)) ('PHD2', 'Gene', (181, 185)) ('hypoxia', 'Disease', 'MESH:D000860', (114, 121)) ('SDHC', 'Gene', (92, 96)) ('SDHAF2', 'Gene', '54949', (106, 112)) ('SDHAF2', 'Gene', '54949', (98, 104)) ('SDHAF2', 'Gene', (106, 112)) ('SDHAF2', 'Gene', (98, 104)) ('VHL', 'Gene', (75, 78)) ('SDHB', 'Gene', (80, 84)) ('tumors', 'Disease', 'MESH:D009369', (10, 16)) ('prolyl hydroxylase 2', 'Gene', (159, 179)) ('PHD2', 'Gene', '54583', (181, 185)) ('patients', 'Species', '9606', (28, 36)) ('mutations', 'Var', (62, 71)) ('SDHD', 'Gene', '6392', (86, 90)) ('HIF2alpha', 'Gene', (147, 156)) ('MDH2', 'Gene', '4191', (188, 192)) ('hypoxia', 'Disease', (229, 236)) ('activation', 'PosReg', (215, 225)) ('VHL', 'Gene', '7428', (75, 78)) ('FH', 'Gene', '2271', (194, 196)) ('hypoxia inducible factor 2alpha', 'Gene', (114, 145)) ('prolyl hydroxylase 2', 'Gene', '54583', (159, 179)) ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('SDHC', 'Gene', '6391', (92, 96)) ('hypoxia', 'Disease', 'MESH:D000860', (229, 236)) ('SDHD', 'Gene', (86, 90)) ('HIF2alpha', 'Gene', '2034', (147, 156)) ('tumors', 'Phenotype', 'HP:0002664', (10, 16)) ('hypoxia', 'Disease', (114, 121)) ('SDHB', 'Gene', '6390', (80, 84)) 29990 28685506 Cluster 2 tumors develop in patients with mutations in RET, NF1, TMEM127, and MAX and involve RAS and kinase signaling pathways. ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('RET', 'Gene', '5979', (55, 58)) ('develop', 'Reg', (17, 24)) ('NF1', 'Gene', '4763', (60, 63)) ('tumors', 'Disease', (10, 16)) ('kinase signaling pathways', 'Pathway', (102, 127)) ('NF1', 'Gene', (60, 63)) ('tumors', 'Disease', 'MESH:D009369', (10, 16)) ('tumors', 'Phenotype', 'HP:0002664', (10, 16)) ('RET', 'Gene', (55, 58)) ('involve', 'Reg', (86, 93)) ('TMEM127', 'Gene', '55654', (65, 72)) ('patients', 'Species', '9606', (28, 36)) ('mutations', 'Var', (42, 51)) ('TMEM127', 'Gene', (65, 72)) 29991 28685506 Cluster 1 tumors are usually noradrenergic while cluster 2 tumors have an adrenergic phenotype except those with a MAX mutation, which are mixed adrenergic/noradrenergic. ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('mutation', 'Var', (119, 127)) ('tumors', 'Disease', (10, 16)) ('tumors', 'Disease', 'MESH:D009369', (10, 16)) ('noradrenergic', 'MPA', (29, 42)) ('tumors', 'Phenotype', 'HP:0002664', (10, 16)) ('tumors', 'Disease', (59, 65)) ('MAX', 'Gene', '4149', (115, 118)) ('adrenergic', 'MPA', (74, 84)) ('MAX', 'Gene', (115, 118)) ('tumors', 'Disease', 'MESH:D009369', (59, 65)) ('tumors', 'Phenotype', 'HP:0002664', (59, 65)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) 29992 28685506 Tumors with SDHB and SDHD mutation may also produce additional 3-methoxytyramine. ('mutation', 'Var', (26, 34)) ('SDHB', 'Gene', '6390', (12, 16)) ('SDHB', 'Gene', (12, 16)) ('3-methoxytyramine', 'MPA', (63, 80)) ('SDHD', 'Gene', '6392', (21, 25)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (63, 80)) ('SDHD', 'Gene', (21, 25)) 29994 28685506 Genetic testing should at least be considered in all patients and is strongly indicated in specific patients such as those with a positive family history of PPGLs or carriers of tumor susceptibility gene mutations, and those with syndromic features or metastatic disease. ('tumor', 'Disease', (178, 183)) ('patients', 'Species', '9606', (53, 61)) ('syndromic features', 'Disease', (230, 248)) ('mutations', 'Var', (204, 213)) ('PPGLs', 'Chemical', '-', (157, 162)) ('PPGLs', 'Gene', (157, 162)) ('patients', 'Species', '9606', (100, 108)) ('tumor', 'Disease', 'MESH:D009369', (178, 183)) ('tumor', 'Phenotype', 'HP:0002664', (178, 183)) ('syndromic features', 'Disease', 'MESH:D000013', (230, 248)) 29996 28685506 Identification of a gene mutation in these patients might result in earlier detection of PPGLs and other neoplasms; thereby, reducing morbidity and improving survival. ('improving', 'PosReg', (148, 157)) ('earlier', 'PosReg', (68, 75)) ('patients', 'Species', '9606', (43, 51)) ('mutation', 'Var', (25, 33)) ('PPGLs', 'Chemical', '-', (89, 94)) ('neoplasms', 'Phenotype', 'HP:0002664', (105, 114)) ('reducing', 'NegReg', (125, 133)) ('neoplasms', 'Disease', (105, 114)) ('detection', 'MPA', (76, 85)) ('morbidity', 'MPA', (134, 143)) ('PPGLs', 'Disease', (89, 94)) ('neoplasms', 'Disease', 'MESH:D009369', (105, 114)) ('survival', 'MPA', (158, 166)) 29998 28685506 A typical example are the patients with SDHB mutations who carry a high risk for developing metastatic PPGLs. ('SDHB', 'Gene', '6390', (40, 44)) ('mutations', 'Var', (45, 54)) ('SDHB', 'Gene', (40, 44)) ('patients', 'Species', '9606', (26, 34)) ('PPGLs', 'Chemical', '-', (103, 108)) 30016 28685506 The underlying pathogenetic mutations in these syndromes drive however a certain risk of tumor recurrence in the remnant tissue after adrenal sparing surgery of 0% to 21%. ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('mutations', 'Var', (28, 37)) ('tumor', 'Disease', (89, 94)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) 30024 28685506 In patients at high-risk for recurrent disease such as the young ones, those who with a germline mutation, and those with an extra-adrenal or large tumor, follow-up should be continued lifelong. ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('germline mutation', 'Var', (88, 105)) ('tumor', 'Disease', (148, 153)) ('patients', 'Species', '9606', (3, 11)) ('tumor', 'Disease', 'MESH:D009369', (148, 153)) 30031 27831464 We found that the presence of heterochromatin in the tissue-of-origin contributes to the recurrence and length of CNAs in the respective cancer type. ('presence', 'Var', (18, 26)) ('cancer', 'Phenotype', 'HP:0002664', (137, 143)) ('heterochromatin', 'Protein', (30, 45)) ('cancer', 'Disease', 'MESH:D009369', (137, 143)) ('CNAs', 'Disease', (114, 118)) ('cancer', 'Disease', (137, 143)) 30033 27831464 There are several different types of DNA alterations and one that is frequently seen in cancer cells is known as a "copy number alteration" (or CNA for short). ('cancer', 'Phenotype', 'HP:0002664', (88, 94)) ('cancer', 'Disease', (88, 94)) ('cancer', 'Disease', 'MESH:D009369', (88, 94)) ('alterations', 'Var', (41, 52)) 30037 27831464 Analysing datasets from almost 6000 patients with 20 different types of cancer showed that mutations in several genes are linked to a higher or lower number of CNAs in patients. ('patients', 'Species', '9606', (36, 44)) ('lower', 'NegReg', (144, 149)) ('cancer', 'Phenotype', 'HP:0002664', (72, 78)) ('mutations', 'Var', (91, 100)) ('CNAs', 'Disease', (160, 164)) ('patients', 'Species', '9606', (168, 176)) ('cancer', 'Disease', 'MESH:D009369', (72, 78)) ('cancer', 'Disease', (72, 78)) 30045 27831464 It has also been observed that DNA contact points in genome-wide chromosome conformation capture (HiC) proximity maps are more likely to become CNA breakpoints. ('HiC', 'Gene', '29969', (98, 101)) ('DNA contact points', 'Var', (31, 49)) ('HiC', 'Gene', (98, 101)) 30046 27831464 The observation that certain genes tend to be mutated in CNA-rich (TP53 and SPOP) or CNA-poor (CTCF and ARID1A) cancers implies that, besides epigenetic factors, the genetic background of the cell influences CNA variation. ('SPOP', 'Gene', '8405', (76, 80)) ('CTCF', 'Gene', '10664', (95, 99)) ('cancers', 'Phenotype', 'HP:0002664', (112, 119)) ('mutated', 'Var', (46, 53)) ('CNA-rich', 'Disease', (57, 65)) ('cancers', 'Disease', 'MESH:D009369', (112, 119)) ('SPOP', 'Gene', (76, 80)) ('ARID1A', 'Gene', '8289', (104, 110)) ('cancers', 'Disease', (112, 119)) ('ARID1A', 'Gene', (104, 110)) ('TP53', 'Gene', '7157', (67, 71)) ('TP53', 'Gene', (67, 71)) ('cancer', 'Phenotype', 'HP:0002664', (112, 118)) ('influences', 'Reg', (197, 207)) ('CTCF', 'Gene', (95, 99)) 30048 27831464 We identify mutations in genes that are statistically linked to the number of CNAs in cancer patients. ('mutations', 'Var', (12, 21)) ('cancer', 'Phenotype', 'HP:0002664', (86, 92)) ('CNAs', 'Disease', (78, 82)) ('cancer', 'Disease', 'MESH:D009369', (86, 92)) ('linked', 'Reg', (54, 60)) ('patients', 'Species', '9606', (93, 101)) ('cancer', 'Disease', (86, 92)) 30059 27831464 Mutations in 62 of these genes are associated with significantly fewer CNAs, whereas one gene (TP53) is associated with a significantly higher number of CNAs (see Supplementary file 1 for the full gene list and Figure 2A for two examples). ('CNAs', 'Disease', (71, 75)) ('Mutations', 'Var', (0, 9)) ('fewer', 'NegReg', (65, 70)) ('TP53', 'Gene', '7157', (95, 99)) ('TP53', 'Gene', (95, 99)) 30062 27831464 We contemplated whether mutations in the remaining 48 genes contribute to the progression of the cancer or are just a by-product of the increased mutation rates found in cancer cells. ('cancer', 'Disease', 'MESH:D009369', (170, 176)) ('cancer', 'Disease', (97, 103)) ('cancer', 'Disease', (170, 176)) ('contribute', 'Reg', (60, 70)) ('cancer', 'Phenotype', 'HP:0002664', (97, 103)) ('cancer', 'Phenotype', 'HP:0002664', (170, 176)) ('mutations', 'Var', (24, 33)) ('cancer', 'Disease', 'MESH:D009369', (97, 103)) 30063 27831464 Accordingly, we used functional impact scores to estimate the pathogenicity of the mutations found in CONIM genes that had not been previously implicated in cancer progression. ('mutations', 'Var', (83, 92)) ('cancer', 'Phenotype', 'HP:0002664', (157, 163)) ('cancer', 'Disease', 'MESH:D009369', (157, 163)) ('CONIM genes', 'Gene', (102, 113)) ('cancer', 'Disease', (157, 163)) 30064 27831464 To estimate the temporal order of somatic events, we compared the variant allele fractions (VAFs) of mutations in non-cancer CONIM genes to the VAFs of mutations from equally often mutated genes. ('cancer', 'Phenotype', 'HP:0002664', (118, 124)) ('non-cancer', 'Disease', (114, 124)) ('mutations', 'Var', (101, 110)) ('non-cancer', 'Disease', 'MESH:D009369', (114, 124)) 30065 27831464 We found that in two out of five cancer types tested, mutations in CONIM genes were associated with a lower VAF (Figure 2:figure supplement 1). ('lower', 'NegReg', (102, 107)) ('cancer', 'Disease', (33, 39)) ('CONIM genes', 'Gene', (67, 78)) ('cancer', 'Disease', 'MESH:D009369', (33, 39)) ('mutations', 'Var', (54, 63)) ('VAF', 'CPA', (108, 111)) ('cancer', 'Phenotype', 'HP:0002664', (33, 39)) 30066 27831464 To investigate the potential mechanisms through which mutations in genes encoding CONIM proteins affect the amount of CNAs in a tumor, we explored the functions of the CONIM gene set. ('tumor', 'Disease', 'MESH:D009369', (128, 133)) ('affect', 'Reg', (97, 103)) ('mutations', 'Var', (54, 63)) ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('CONIM', 'Gene', (82, 87)) ('tumor', 'Disease', (128, 133)) ('amount of CNAs in a', 'MPA', (108, 127)) 30075 27831464 The overlap between the mutated genes found in samples with a differential CNA length and those found in samples with a differential CNA number was larger than expected by chance (p < e-16; chi-square test). ('e-16', 'Gene', (184, 188)) ('e-16', 'Gene', '26766', (184, 188)) ('differential', 'Var', (62, 74)) 30077 27831464 Mutations in components of the SWI/SNF complex have been observed in different tumor types, but their contribution to carcinogenesis is only poorly understood. ('carcinogenesis', 'Disease', (118, 132)) ('tumor', 'Disease', (79, 84)) ('SWI/SNF', 'Gene', (31, 38)) ('observed', 'Reg', (57, 65)) ('Mutations', 'Var', (0, 9)) ('tumor', 'Disease', 'MESH:D009369', (79, 84)) ('carcinogenesis', 'Disease', 'MESH:D063646', (118, 132)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) 30080 27831464 Instead, we explicitly tested whether epigenetic marks around breakpoints are enriched in those tissues where the breakpoint frequently occurs during cancer development versus those tissues where the breakpoint does not occur. ('tested', 'Reg', (23, 29)) ('cancer', 'Disease', 'MESH:D009369', (150, 156)) ('cancer', 'Disease', (150, 156)) ('epigenetic marks', 'Var', (38, 54)) ('cancer', 'Phenotype', 'HP:0002664', (150, 156)) 30084 27831464 We found that non-silent mutations in these genes affect a greater proportion of samples in cancer types (luad, lusc, lihc and skcm) that show a strong H3K9me3 enrichment (> 2-fold change in 10 kb windows around breakpoints; p < 0.05; Mann-Whitney-Wilcoxon test) in their tissue-of-origin (p < e-6; chi-square test). ('mutations', 'Var', (25, 34)) ('cancer', 'Disease', (92, 98)) ('cancer', 'Disease', 'MESH:D009369', (92, 98)) ('affect', 'Reg', (50, 56)) ('H3K9me3', 'Protein', (152, 159)) ('cancer', 'Phenotype', 'HP:0002664', (92, 98)) ('non-silent mutations', 'Var', (14, 34)) 30090 27831464 Mutations in NIPBL have been associated with chromatin decompaction and, indeed, mutations that are predicted to have a more severe effect on NIPBL exhibit a stronger effect on chromatin. ('NIPBL', 'Gene', '25836', (13, 18)) ('NIPBL', 'Gene', (13, 18)) ('NIPBL', 'Gene', '25836', (142, 147)) ('stronger effect', 'PosReg', (158, 173)) ('NIPBL', 'Gene', (142, 147)) ('Mutations', 'Var', (0, 9)) ('chromatin decompaction', 'MPA', (45, 67)) ('mutations', 'Var', (81, 90)) ('associated', 'Reg', (29, 39)) ('chromatin', 'MPA', (177, 186)) 30091 27831464 We therefore tested whether mutations in the HEAT domain, which is necessary to target NIPBL to sites of DNA damage, have a stronger effect on CNA number in cancers than do other missense mutations. ('cancer', 'Phenotype', 'HP:0002664', (157, 163)) ('CNA number', 'MPA', (143, 153)) ('NIPBL', 'Gene', '25836', (87, 92)) ('cancers', 'Disease', 'MESH:D009369', (157, 164)) ('NIPBL', 'Gene', (87, 92)) ('cancers', 'Phenotype', 'HP:0002664', (157, 164)) ('cancers', 'Disease', (157, 164)) ('effect', 'Reg', (133, 139)) ('mutations', 'Var', (28, 37)) 30092 27831464 We also checked whether cancers with truncating mutations in the N-terminus of NIPBL are associated with a significantly lower CNA number as compared to those with truncating mutations in the C-terminus (Figure 5B). ('cancer', 'Phenotype', 'HP:0002664', (24, 30)) ('NIPBL', 'Gene', '25836', (79, 84)) ('CNA number', 'CPA', (127, 137)) ('NIPBL', 'Gene', (79, 84)) ('lower', 'NegReg', (121, 126)) ('cancers', 'Phenotype', 'HP:0002664', (24, 31)) ('truncating mutations in', 'Var', (37, 60)) ('cancers', 'Disease', 'MESH:D009369', (24, 31)) ('cancers', 'Disease', (24, 31)) 30093 27831464 In both cases, we observed a significant difference, with mutations that have an anticipated stronger functional or structural impact on NIPBL being associated with fewer CNAs. ('mutations', 'Var', (58, 67)) ('CNAs', 'Disease', (171, 175)) ('NIPBL', 'Gene', '25836', (137, 142)) ('NIPBL', 'Gene', (137, 142)) ('fewer', 'NegReg', (165, 170)) 30103 27831464 One explanation for this observation could be that mutations in CONIM genes tend to occur late during cancer development. ('cancer', 'Phenotype', 'HP:0002664', (102, 108)) ('mutations', 'Var', (51, 60)) ('CONIM genes', 'Gene', (64, 75)) ('cancer', 'Disease', (102, 108)) ('cancer', 'Disease', 'MESH:D009369', (102, 108)) 30107 27831464 Inactivation of TP53 decreases sensitivity to apoptosis, and therefore more DNA damage (including CNAs) is tolerated. ('decreases', 'NegReg', (21, 30)) ('sensitivity to apoptosis', 'MPA', (31, 55)) ('TP53', 'Gene', '7157', (16, 20)) ('TP53', 'Gene', (16, 20)) ('Inactivation', 'Var', (0, 12)) 30109 27831464 The CNA-rich group has been associated with recurrent mutations in TP53 and the mutation-rich (and CNA-depleted) group with mutations in ARID1A and CTCF. ('ARID1A', 'Gene', '8289', (137, 143)) ('mutations', 'Var', (124, 133)) ('ARID1A', 'Gene', (137, 143)) ('associated', 'Reg', (28, 38)) ('mutations', 'Var', (54, 63)) ('CTCF', 'Gene', (148, 152)) ('TP53', 'Gene', '7157', (67, 71)) ('CTCF', 'Gene', '10664', (148, 152)) ('TP53', 'Gene', (67, 71)) 30116 27831464 ATM is required for the repair of DNA double-strand breaks in heterochromatic regions, a process which is characterised by slow repair kinetics. ('ATM', 'Gene', (0, 3)) ('DNA double-strand breaks', 'Var', (34, 58)) ('ATM', 'Gene', '472', (0, 3)) 30117 27831464 ATM-mediated phosphorylation of KAP1 (KRAB-associated protein 1) triggers local decondensation of heterochromatin and thereby facilitates efficient repair. ('facilitates', 'PosReg', (126, 137)) ('KAP1', 'Gene', (32, 36)) ('heterochromatin', 'Protein', (98, 113)) ('KRAB-associated protein 1', 'Gene', (38, 63)) ('repair', 'MPA', (148, 154)) ('local decondensation', 'MPA', (74, 94)) ('KAP1', 'Gene', '10155', (32, 36)) ('phosphorylation', 'Var', (13, 28)) ('ATM', 'Gene', (0, 3)) ('KRAB-associated protein 1', 'Gene', '10155', (38, 63)) ('ATM', 'Gene', '472', (0, 3)) 30120 27831464 These factors are governed by the properties of the tissue-of-origin (which contribute to the variability in the number, length and distribution of CNAs over cancer types) and could be influenced by abnormal activity of epigenetic modifiers through mutation or differential expression (contributing to the variation on the patient-level). ('influenced by', 'Reg', (185, 198)) ('mutation', 'Var', (249, 257)) ('differential expression', 'Var', (261, 284)) ('cancer', 'Disease', 'MESH:D009369', (158, 164)) ('cancer', 'Disease', (158, 164)) ('patient', 'Species', '9606', (323, 330)) ('cancer', 'Phenotype', 'HP:0002664', (158, 164)) 30122 27831464 In accordance with previous studies, we show that TP53 deficiency is strongly associated with high CNA numbers. ('associated', 'Reg', (78, 88)) ('TP53', 'Gene', '7157', (50, 54)) ('high CNA numbers', 'CPA', (94, 110)) ('deficiency', 'Var', (55, 65)) ('TP53', 'Gene', (50, 54)) 30123 27831464 In summary, our observations suggest that the epigenome impacts CNA occurrence in a tissue- and patient-specific manner. ('epigenome', 'Var', (46, 55)) ('CNA', 'Disease', (64, 67)) ('patient', 'Species', '9606', (96, 103)) ('impacts', 'Reg', (56, 63)) 30139 27831464 We computed VAFs as the read count supporting mutation divided by the total read count for each mutation in ucec, hnsc, luad, brca and skcm, as these cancer types had at least 100 mutations in non-cancer CONIM genes (considering genes with at least 15 non-silent mutations), read count information and cancer gene classification available. ('brca', 'Gene', '672', (126, 130)) ('cancer', 'Disease', 'MESH:D009369', (197, 203)) ('mutations', 'Var', (180, 189)) ('brca', 'Gene', (126, 130)) ('non-cancer', 'Disease', 'MESH:D009369', (193, 203)) ('cancer', 'Phenotype', 'HP:0002664', (302, 308)) ('cancer', 'Disease', (197, 203)) ('non-cancer', 'Disease', (193, 203)) ('cancer', 'Disease', 'MESH:D009369', (150, 156)) ('cancer', 'Disease', (150, 156)) ('cancer', 'Disease', 'MESH:D009369', (302, 308)) ('cancer', 'Phenotype', 'HP:0002664', (197, 203)) ('cancer', 'Disease', (302, 308)) ('cancer', 'Phenotype', 'HP:0002664', (150, 156)) 30179 27831464 Since ovarian cancer has frequent TP53 mutations, the question was raised as to whether TP53-mutatant cancers exhibit the same relations between heterochromatin and CNA burden. ('cancer', 'Phenotype', 'HP:0002664', (102, 108)) ('TP53', 'Gene', (34, 38)) ('cancer', 'Phenotype', 'HP:0002664', (14, 20)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (6, 20)) ('ovarian cancer', 'Disease', 'MESH:D010051', (6, 20)) ('mutations', 'Var', (39, 48)) ('TP53', 'Gene', '7157', (88, 92)) ('cancers', 'Disease', 'MESH:D009369', (102, 109)) ('cancers', 'Phenotype', 'HP:0002664', (102, 109)) ('cancers', 'Disease', (102, 109)) ('TP53', 'Gene', (88, 92)) ('ovarian cancer', 'Disease', (6, 20)) ('TP53', 'Gene', '7157', (34, 38)) 30182 27831464 "The manuscript is improved but the primary result-that 62 genes are associated with decreased CNA rates and only one (TP53) was associated with increased rates-raises the concern that a confounder continues to drive much of the association between mutation rates in specific genes and lack of CNAs. ('mutation', 'Var', (249, 257)) ('CNA rates', 'CPA', (95, 104)) ('decreased', 'NegReg', (85, 94)) ('TP53', 'Gene', '7157', (119, 123)) ('TP53', 'Gene', (119, 123)) 30194 27831464 We see that in the previous version of the manuscript 1) the motivation was not very well explained, 2) presenting the two pipelines at different positions of the manuscript was confusing and 3) combining the single cancer p-values with the Fisher Method also suppresses cancer type-specific effects. ('cancer', 'Disease', 'MESH:D009369', (216, 222)) ('cancer', 'Phenotype', 'HP:0002664', (271, 277)) ('cancer', 'Phenotype', 'HP:0002664', (216, 222)) ('suppresses', 'NegReg', (260, 270)) ('cancer', 'Disease', 'MESH:D009369', (271, 277)) ('cancer', 'Disease', (216, 222)) ('p-values', 'Var', (223, 231)) ('cancer', 'Disease', (271, 277)) 30204 27831464 We agree with the reviewers that ovarian cancer may not show the same behavior like other cancer types due to frequent TP53 mutations and we include a corresponding paragraph in the Discussion section. ('ovarian cancer', 'Disease', 'MESH:D010051', (33, 47)) ('cancer', 'Phenotype', 'HP:0002664', (41, 47)) ('mutations', 'Var', (124, 133)) ('ovarian cancer', 'Disease', (33, 47)) ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (33, 47)) ('cancer', 'Disease', 'MESH:D009369', (90, 96)) ('cancer', 'Disease', (41, 47)) ('cancer', 'Disease', 'MESH:D009369', (41, 47)) ('TP53', 'Gene', '7157', (119, 123)) ('cancer', 'Disease', (90, 96)) ('TP53', 'Gene', (119, 123)) 30209 27831464 This suggests that even though we have a variation in dependence of the specific algorithmic details or the underlying data, we observe a robust functional enrichment towards epigenetic modifiers and a higher number of genes associated with lower CNA number (with exception of the cancer type-specific pipeline where the second effect is less pronounced). ('cancer', 'Disease', 'MESH:D009369', (281, 287)) ('CNA', 'MPA', (247, 250)) ('cancer', 'Disease', (281, 287)) ('lower', 'NegReg', (241, 246)) ('epigenetic', 'Var', (175, 185)) ('cancer', 'Phenotype', 'HP:0002664', (281, 287)) 30213 27831464 We again observed elevated mutation frequencies in cancer types that correspond to H3K9me3-enriched tissues. ('cancer', 'Phenotype', 'HP:0002664', (51, 57)) ('mutation', 'Var', (27, 35)) ('cancer', 'Disease', (51, 57)) ('cancer', 'Disease', 'MESH:D009369', (51, 57)) ('elevated', 'PosReg', (18, 26)) 30214 27831464 Also, we do not filter genes that do not give a signal in single cancer types or those that are also associated with silent mutations. ('cancer', 'Disease', (65, 71)) ('silent mutations', 'Var', (117, 133)) ('cancer', 'Phenotype', 'HP:0002664', (65, 71)) ('cancer', 'Disease', 'MESH:D009369', (65, 71)) 30271 22346222 NF1 infact is caused by a mutation of the NF1 gene, that has been mapped on chromosome 17. ('mutation', 'Var', (26, 34)) ('NF1', 'Gene', (0, 3)) ('caused by', 'Reg', (14, 23)) ('NF1', 'Gene', '4763', (42, 45)) ('NF1', 'Gene', '4763', (0, 3)) ('NF1', 'Gene', (42, 45)) 30276 22346222 These criteria are satisfied when a patient presents two or more of the following features, in the absence of another diagnosis: Six or more cafe-au-lait spots >5mm in the greatest diameter in the prepubertals, and >15 mm in the postpubertals; Two or more neurofibromas of any type or one plexiform neurofibroma; Freckling in the axillary or the inguinal regions; Optic glioma; Two or more Lisch nodules; A typical osseous lesion such as sphenoid dysplasia or tibial pseudarthrosis; or A first degree relative affected by NF1 as defined above. ('neurofibroma', 'Disease', (299, 311)) ('glioma', 'Disease', 'MESH:D005910', (370, 376)) ('Optic glioma', 'Phenotype', 'HP:0009734', (364, 376)) ('osseous lesion', 'Disease', (415, 429)) ('NF1', 'Gene', (522, 525)) ('Freckling', 'Disease', (313, 322)) ('tibial pseudarthrosis', 'Disease', 'MESH:D011542', (460, 481)) ('sphenoid dysplasia', 'Disease', 'MESH:D015524', (438, 456)) ('glioma', 'Phenotype', 'HP:0009733', (370, 376)) ('cafe-au-lait spots', 'Phenotype', 'HP:0000957', (141, 159)) ('neurofibroma', 'Disease', 'MESH:D009455', (256, 268)) ('>15 mm', 'Var', (215, 221)) ('tibial pseudarthrosis', 'Disease', (460, 481)) ('Freckling', 'Phenotype', 'HP:0001480', (313, 322)) ('neurofibromas', 'Disease', (256, 269)) ('>5mm', 'Var', (160, 164)) ('neurofibroma', 'Disease', 'MESH:D009455', (299, 311)) ('Lisch nodules', 'Phenotype', 'HP:0009737', (390, 403)) ('neurofibroma', 'Disease', (256, 268)) ('patient', 'Species', '9606', (36, 43)) ('sphenoid dysplasia', 'Disease', (438, 456)) ('plexiform neurofibroma', 'Phenotype', 'HP:0009732', (289, 311)) ('neurofibromas', 'Phenotype', 'HP:0001067', (256, 269)) ('osseous lesion', 'Disease', 'MESH:D010001', (415, 429)) ('glioma', 'Disease', (370, 376)) ('neurofibromas', 'Disease', 'MESH:D009455', (256, 269)) ('NF1', 'Gene', '4763', (522, 525)) 30295 21139908 Genetic analysis revealed a germline heterozygous missense mutation (Pro81Leu) in the succinate dehydrogenase subunit D (SDHD) gene. ('SDHD', 'Gene', (121, 125)) ('revealed', 'Reg', (17, 25)) ('succinate dehydrogenase subunit D', 'Gene', '6392', (86, 119)) ('Pro81Leu', 'Var', (69, 77)) ('Pro81Leu', 'Mutation', 'rs80338844', (69, 77)) ('succinate dehydrogenase subunit D', 'Gene', (86, 119)) ('SDHD', 'Gene', '6392', (121, 125)) 30296 21139908 We discuss the clinical presentations of the familial paraganglioma syndrome type 1, which is caused by mutations in SDHD, and the implications for the clinical diagnosis and care of such patients. ('caused by', 'Reg', (94, 103)) ('mutations', 'Var', (104, 113)) ('familial paraganglioma syndrome type 1', 'Disease', 'MESH:D010235', (45, 83)) ('patients', 'Species', '9606', (188, 196)) ('SDHD', 'Gene', (117, 121)) ('familial paraganglioma syndrome type 1', 'Disease', (45, 83)) ('paraganglioma', 'Phenotype', 'HP:0002668', (54, 67)) ('SDHD', 'Gene', '6392', (117, 121)) 30311 21139908 Up to a third of paragangliomas and pheochromoctyomas are associated with hereditary causes; i.e., mutations in VHL, RET (causing multiple endocrine neoplasia type 2A-MEN2A), NF1, and the SDH complex genes SDHB, -C and -D. The SDH complex is bound to the inner mitochondrial membrane and participates in both the electron-transport chain and the Krebs cycle as part of complex II. ('Krebs', 'Chemical', '-', (346, 351)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (139, 158)) ('paraganglioma', 'Phenotype', 'HP:0002668', (17, 30)) ('paragangliomas', 'Phenotype', 'HP:0002668', (17, 31)) ('SDH', 'Gene', (227, 230)) ('VHL', 'Gene', '7428', (112, 115)) ('NF1', 'Gene', (175, 178)) ('SDHB', 'Gene', (206, 210)) ('SDH', 'Gene', '6390', (206, 209)) ('neoplasia', 'Disease', 'MESH:D009369', (149, 158)) ('SDH', 'Gene', '6390', (188, 191)) ('neoplasia', 'Disease', (149, 158)) ('RET', 'Gene', '5979', (117, 120)) ('participates', 'Reg', (288, 300)) ('SDH', 'Gene', (206, 209)) ('MEN2A', 'Gene', (167, 172)) ('MEN2A', 'Gene', '5979', (167, 172)) ('associated', 'Reg', (58, 68)) ('SDH', 'Gene', (188, 191)) ('SDH', 'Gene', '6390', (227, 230)) ('VHL', 'Gene', (112, 115)) ('neoplasia', 'Phenotype', 'HP:0002664', (149, 158)) ('mutations', 'Var', (99, 108)) ('SDHB', 'Gene', '6390', (206, 210)) ('NF1', 'Gene', '4763', (175, 178)) ('RET', 'Gene', (117, 120)) ('paragangliomas and pheochromoctyomas', 'Disease', 'MESH:D010235', (17, 53)) 30312 21139908 It consists of four subunits A-D. Mutations in subunits B, C, and D are associated with hereditary pheochromocytomas and paragangliomas: the PGL1 syndrome with mutations in SDHD, PGL3 with mutations in SDHC, and PGL4 with mutations in SDHB. ('mutations', 'Var', (160, 169)) ('associated', 'Reg', (72, 82)) ('PGL3', 'Gene', '6391', (179, 183)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (99, 116)) ('Mutations', 'Var', (34, 43)) ('SDHB', 'Gene', '6390', (235, 239)) ('PGL1 syndrome', 'Disease', (141, 154)) ('SDHC', 'Gene', (202, 206)) ('PGL4', 'Gene', '6390', (212, 216)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (99, 115)) ('PGL4', 'Gene', (212, 216)) ('mutations', 'Var', (222, 231)) ('mutations', 'Var', (189, 198)) ('SDHD', 'Gene', '6392', (173, 177)) ('SDHB', 'Gene', (235, 239)) ('hereditary pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (88, 135)) ('SDHC', 'Gene', '6391', (202, 206)) ('SDHD', 'Gene', (173, 177)) ('paragangliomas', 'Phenotype', 'HP:0002668', (121, 135)) ('paraganglioma', 'Phenotype', 'HP:0002668', (121, 134)) ('PGL3', 'Gene', (179, 183)) ('PGL1 syndrome', 'Disease', 'MESH:D010235', (141, 154)) 30316 21139908 Activation of HIF pathways with SDH subunit inactivation has been linked to accumulation of succinate and resulting inhibition of the prolyl hydroxylase enzymes that are necessary for HIF-alpha subunit modification and proteosomal degradation, as pVHL is unable to bind the unmodified sub-units. ('HIF pathways', 'Pathway', (14, 26)) ('succinate', 'MPA', (92, 101)) ('succinate', 'Chemical', 'MESH:D019802', (92, 101)) ('SDH', 'Gene', '6390', (32, 35)) ('inhibition', 'NegReg', (116, 126)) ('prolyl hydroxylase enzymes', 'Enzyme', (134, 160)) ('accumulation', 'PosReg', (76, 88)) ('Activation', 'PosReg', (0, 10)) ('pVHL', 'Gene', '7428', (247, 251)) ('SDH', 'Gene', (32, 35)) ('inactivation', 'Var', (44, 56)) ('pVHL', 'Gene', (247, 251)) 30317 21139908 In addition, animal models of SDH inactivation suggest that reactive oxygen species may be increased and also might provoke a pseudohypoxic state. ('reactive oxygen species', 'MPA', (60, 83)) ('SDH', 'Gene', (30, 33)) ('inactivation', 'Var', (34, 46)) ('pseudohypoxic state', 'MPA', (126, 145)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (60, 83)) ('provoke', 'Reg', (116, 123)) ('increased', 'PosReg', (91, 100)) ('SDH', 'Gene', '6390', (30, 33)) 30318 21139908 Therefore SDHB/D mutations may predispose to a failure of normal developmental apoptosis of sympathetic neuronal cells leading to persistence of "pheochromocytoma precursor cells". ('developmental apoptosis', 'CPA', (65, 88)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (146, 162)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (146, 162)) ('SDHB', 'Gene', '6390', (10, 14)) ('SDHB', 'Gene', (10, 14)) ('mutations', 'Var', (17, 26)) ('pheochromocytoma', 'Disease', (146, 162)) 30326 21139908 Depending on the clinical presentation, mutation analysis of VHL, SDHB, SDHC, SDHD, and/or RET genes may be indicated. ('RET', 'Gene', (91, 94)) ('SDHB', 'Gene', (66, 70)) ('mutation analysis', 'Var', (40, 57)) ('SDHD', 'Gene', (78, 82)) ('SDHD', 'Gene', '6392', (78, 82)) ('VHL', 'Gene', (61, 64)) ('RET', 'Gene', '5979', (91, 94)) ('SDHC', 'Gene', (72, 76)) ('SDHB', 'Gene', '6390', (66, 70)) ('VHL', 'Gene', '7428', (61, 64)) ('SDHC', 'Gene', '6391', (72, 76)) 30330 21139908 However, he will require genetic screening when he is older, because if he is a carrier of the SDHD mutation, then his children may be at risk. ('mutation', 'Var', (100, 108)) ('children', 'Species', '9606', (119, 127)) ('SDHD', 'Gene', (95, 99)) ('SDHD', 'Gene', '6392', (95, 99)) 30340 20059341 Hereditary Leiomyomatosis Renal Cell Carcinoma, a hereditary form of type 2 papillary renal carcinoma, is caused by inactivation of the Krebs cycle enzyme, fumarate hydratase (fumarase, FH). ('Carcinoma', 'Phenotype', 'HP:0030731', (37, 46)) ('papillary renal carcinoma', 'Disease', 'MESH:D007681', (76, 101)) ('Krebs', 'Chemical', '-', (136, 141)) ('fumarate hydratase', 'Gene', (156, 174)) ('inactivation', 'Var', (116, 128)) ('type 2 papillary renal carcinoma', 'Phenotype', 'HP:0006732', (69, 101)) ('carcinoma', 'Phenotype', 'HP:0030731', (92, 101)) ('Hereditary Leiomyomatosis Renal Cell Carcinoma', 'Disease', (0, 46)) ('papillary renal carcinoma', 'Disease', (76, 101)) ('caused by', 'Reg', (106, 115)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (86, 101)) ('Renal Cell Carcinoma', 'Phenotype', 'HP:0005584', (26, 46)) ('fumarase', 'Gene', '2271', (176, 184)) ('Hereditary Leiomyomatosis Renal Cell Carcinoma', 'Disease', 'MESH:C535516', (0, 46)) ('fumarate hydratase', 'Gene', '2271', (156, 174)) ('fumarase', 'Gene', (176, 184)) ('papillary renal carcinoma', 'Phenotype', 'HP:0006766', (76, 101)) 30362 20059341 The VHL gene was identified on the short arm of chromosome 3 and mutation of this gene was found in the germline of individuals affected with von Hippel Lindau. ('von Hippel Lindau', 'Disease', 'MESH:D006623', (142, 159)) ('VHL', 'Disease', (4, 7)) ('VHL', 'Disease', 'MESH:D006623', (4, 7)) ('found', 'Reg', (91, 96)) ('mutation', 'Var', (65, 73)) ('short arm', 'Phenotype', 'HP:0009824', (35, 44)) ('von Hippel Lindau', 'Disease', (142, 159)) 30363 20059341 With improved detection methods mutation of the VHL gene is now found in nearly 100% of VHL families. ('VHL', 'Disease', (48, 51)) ('VHL', 'Disease', 'MESH:D006623', (48, 51)) ('found', 'Reg', (64, 69)) ('mutation', 'Var', (32, 40)) ('VHL', 'Disease', (88, 91)) ('VHL', 'Disease', 'MESH:D006623', (88, 91)) 30364 20059341 When tumor tissue from patients with kidney cancer was tested for alteration of the VHL gene, mutations were detected in a high percentage of patients with clear cell kidney cancer. ('VHL', 'Disease', (84, 87)) ('kidney cancer', 'Disease', (37, 50)) ('patients', 'Species', '9606', (23, 31)) ('tumor', 'Disease', 'MESH:D009369', (5, 10)) ('clear cell kidney cancer', 'Disease', 'MESH:D008649', (156, 180)) ('kidney cancer', 'Disease', 'MESH:D007680', (167, 180)) ('tumor', 'Phenotype', 'HP:0002664', (5, 10)) ('cancer', 'Phenotype', 'HP:0002664', (174, 180)) ('kidney cancer', 'Phenotype', 'HP:0009726', (167, 180)) ('VHL', 'Disease', 'MESH:D006623', (84, 87)) ('mutations', 'Var', (94, 103)) ('clear cell kidney cancer', 'Disease', (156, 180)) ('kidney cancer', 'Disease', 'MESH:D007680', (37, 50)) ('clear cell kidney cancer', 'Phenotype', 'HP:0006770', (156, 180)) ('detected', 'Reg', (109, 117)) ('tumor', 'Disease', (5, 10)) ('kidney cancer', 'Phenotype', 'HP:0009726', (37, 50)) ('patients', 'Species', '9606', (142, 150)) ('cancer', 'Phenotype', 'HP:0002664', (44, 50)) 30366 20059341 detected mutation or methylation of the VHL gene in 91% of tumors from patients with clear cell kidney cancer. ('mutation', 'Var', (9, 17)) ('clear cell kidney cancer', 'Disease', 'MESH:D008649', (85, 109)) ('cancer', 'Phenotype', 'HP:0002664', (103, 109)) ('clear cell kidney cancer', 'Phenotype', 'HP:0006770', (85, 109)) ('patients', 'Species', '9606', (71, 79)) ('kidney cancer', 'Phenotype', 'HP:0009726', (96, 109)) ('methylation', 'Var', (21, 32)) ('tumors', 'Disease', (59, 65)) ('tumors', 'Disease', 'MESH:D009369', (59, 65)) ('tumors', 'Phenotype', 'HP:0002664', (59, 65)) ('clear cell kidney cancer', 'Disease', (85, 109)) ('VHL', 'Disease', (40, 43)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) ('VHL', 'Disease', 'MESH:D006623', (40, 43)) 30372 20059341 When there is mutation of the VHL gene in clear cell kidney cancer, either in the alpha domain that binds elongin C/B and Cul2, or in the beta domain that targets HIF for degradation, HIF is not degraded and over-accumulates. ('VHL', 'Disease', 'MESH:D006623', (30, 33)) ('clear cell kidney cancer', 'Disease', (42, 66)) ('binds', 'Interaction', (100, 105)) ('clear cell kidney cancer', 'Disease', 'MESH:D008649', (42, 66)) ('clear cell kidney cancer', 'Phenotype', 'HP:0006770', (42, 66)) ('Cul2', 'Gene', (122, 126)) ('elongin C/B', 'Gene', (106, 117)) ('mutation', 'Var', (14, 22)) ('elongin C/B', 'Gene', '6921;6923', (106, 117)) ('kidney cancer', 'Phenotype', 'HP:0009726', (53, 66)) ('Cul2', 'Gene', '8453', (122, 126)) ('cancer', 'Phenotype', 'HP:0002664', (60, 66)) ('VHL', 'Disease', (30, 33)) 30375 20059341 In this three arm randomized trial, patients treated with high dose bevacizumab had a significantly increased progression free survival compared with those treated with placebo. ('increased', 'PosReg', (100, 109)) ('patients', 'Species', '9606', (36, 44)) ('bevacizumab', 'Chemical', 'MESH:D000068258', (68, 79)) ('high dose', 'Var', (58, 67)) ('progression free survival', 'CPA', (110, 135)) 30428 20059341 Mutation of the VHL gene was found to up-regulate these transmembrane enzymes which are critical for the regulation of pH in the extracellular microenvironment. ('transmembrane enzymes', 'Enzyme', (56, 77)) ('up-regulate', 'PosReg', (38, 49)) ('Mutation', 'Var', (0, 8)) ('VHL', 'Disease', (16, 19)) ('VHL', 'Disease', 'MESH:D006623', (16, 19)) 30434 20059341 This technique provides a potential molecular diagnostic to differentiate tumors with VHL gene mutations from other types of kidney cancer. ('kidney cancer', 'Disease', 'MESH:D007680', (125, 138)) ('VHL', 'Disease', (86, 89)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('VHL', 'Disease', 'MESH:D006623', (86, 89)) ('tumors', 'Disease', (74, 80)) ('cancer', 'Phenotype', 'HP:0002664', (132, 138)) ('kidney cancer', 'Phenotype', 'HP:0009726', (125, 138)) ('tumors', 'Phenotype', 'HP:0002664', (74, 80)) ('mutations', 'Var', (95, 104)) ('kidney cancer', 'Disease', (125, 138)) ('tumors', 'Disease', 'MESH:D009369', (74, 80)) 30440 20059341 Activity has been observed with this agent in papillary RCC, notably in tumors with MET mutations (Figure 2). ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('RCC', 'Disease', (56, 59)) ('RCC', 'Disease', 'MESH:C538614', (56, 59)) ('tumors', 'Disease', (72, 78)) ('tumors', 'Disease', 'MESH:D009369', (72, 78)) ('Activity', 'MPA', (0, 8)) ('tumors', 'Phenotype', 'HP:0002664', (72, 78)) ('MET mutations', 'Var', (84, 97)) 30444 20059341 Germline BHD gene mutations have been found in over 90% of BHD kindreds. ('BHD', 'Gene', (59, 62)) ('BHD', 'Gene', '50947', (9, 12)) ('BHD', 'Gene', (9, 12)) ('BHD', 'Gene', '50947', (59, 62)) ('mutations', 'Var', (18, 27)) 30456 20059341 Mutations of the fumarate hydratase gene are found in over 90% of HLRCC families. ('fumarate hydratase', 'Gene', '2271', (17, 35)) ('RCC', 'Disease', 'MESH:C538614', (68, 71)) ('Mutations', 'Var', (0, 9)) ('fumarate hydratase', 'Gene', (17, 35)) ('RCC', 'Disease', (68, 71)) ('found', 'Reg', (45, 50)) 30462 20059341 Familial paraganglioma/pheochromocytoma kindreds have been found to have germline mutations in the mitochondrial complex II genes, SDHB, SDHC, and SDHB. ('SDHB', 'Gene', '6390', (131, 135)) ('Familial paraganglioma/pheochromocytoma', 'Disease', (0, 39)) ('SDHB', 'Gene', (131, 135)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (23, 39)) ('mutations', 'Var', (82, 91)) ('SDHB', 'Gene', '6390', (147, 151)) ('SDHB', 'Gene', (147, 151)) ('paraganglioma', 'Phenotype', 'HP:0002668', (9, 22)) ('SDHC', 'Gene', (137, 141)) ('Familial paraganglioma/pheochromocytoma', 'Disease', 'MESH:C531777', (0, 39)) 30463 20059341 Renal carcinoma, along with pheochromocytoma/paraganglioma, has been found to be a component of the familial pheochromocytoma/paraganglioma complex and a recent report described germline SDHB mutations in a family with renal cancer with no history of pheochromocytoma. ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (109, 139)) ('pheochromocytoma', 'Disease', (109, 125)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (109, 125)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (28, 58)) ('pheochromocytoma', 'Disease', (251, 267)) ('cancer', 'Phenotype', 'HP:0002664', (225, 231)) ('mutations', 'Var', (192, 201)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (251, 267)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (28, 44)) ('SDHB', 'Gene', '6390', (187, 191)) ('Renal carcinoma', 'Disease', 'MESH:C538614', (0, 15)) ('renal cancer', 'Disease', (219, 231)) ('paraganglioma', 'Phenotype', 'HP:0002668', (126, 139)) ('renal cancer', 'Phenotype', 'HP:0009726', (219, 231)) ('pheochromocytoma', 'Disease', (28, 44)) ('Renal carcinoma', 'Disease', (0, 15)) ('carcinoma', 'Phenotype', 'HP:0030731', (6, 15)) ('Renal carcinoma', 'Phenotype', 'HP:0005584', (0, 15)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (28, 44)) ('SDHB', 'Gene', (187, 191)) ('paraganglioma', 'Phenotype', 'HP:0002668', (45, 58)) ('renal cancer', 'Disease', 'MESH:D007680', (219, 231)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (100, 125)) ('pheochromocytoma/paraganglioma', 'Disease', (109, 139)) ('pheochromocytoma/paraganglioma', 'Disease', (28, 58)) ('described', 'Reg', (168, 177)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (109, 125)) ('familial pheochromocytoma', 'Disease', (100, 125)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (251, 267)) 30464 20059341 The tuberous sclerosis complex is an autosomal dominant disorder associated with mutation of either the TSC1 or TSC2 gene. ('autosomal dominant disorder', 'Disease', 'MESH:D030342', (37, 64)) ('tuberous sclerosis', 'Disease', 'MESH:D014402', (4, 22)) ('mutation', 'Var', (81, 89)) ('associated', 'Reg', (65, 75)) ('TSC1', 'Gene', '7248', (104, 108)) ('autosomal dominant disorder', 'Disease', (37, 64)) ('TSC1', 'Gene', (104, 108)) ('tuberous sclerosis', 'Disease', (4, 22)) ('TSC2', 'Gene', '7249', (112, 116)) ('TSC2', 'Gene', (112, 116)) 30486 20059341 A clear cell renal carcinoma in a patient affected with VHL has a mutation of the VHL gene as well as loss of the second allele (i.e., biallelic inactivation of the VHL gene). ('clear cell renal carcinoma', 'Disease', (2, 28)) ('VHL', 'Disease', (82, 85)) ('VHL', 'Disease', 'MESH:D006623', (82, 85)) ('clear cell renal carcinoma', 'Phenotype', 'HP:0006770', (2, 28)) ('carcinoma', 'Phenotype', 'HP:0030731', (19, 28)) ('biallelic inactivation', 'Var', (135, 157)) ('VHL', 'Disease', 'MESH:D006623', (165, 168)) ('VHL', 'Disease', (165, 168)) ('clear cell renal carcinoma', 'Disease', 'MESH:C538614', (2, 28)) ('patient', 'Species', '9606', (34, 41)) ('VHL', 'Disease', (56, 59)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (13, 28)) ('mutation', 'Var', (66, 74)) ('VHL', 'Disease', 'MESH:D006623', (56, 59)) 30487 20059341 A sporadic clear cell renal tumor with a VHL mutation has loss of the second allele as well (i.e., biallelic inactivation of the VHL gene). ('renal tumor', 'Disease', (22, 33)) ('VHL', 'Disease', (129, 132)) ('VHL', 'Disease', 'MESH:D006623', (41, 44)) ('VHL', 'Disease', (41, 44)) ('clear cell renal tumor', 'Phenotype', 'HP:0006770', (11, 33)) ('mutation', 'Var', (45, 53)) ('renal tumor', 'Disease', 'MESH:D007674', (22, 33)) ('renal tumor', 'Phenotype', 'HP:0009726', (22, 33)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) ('VHL', 'Disease', 'MESH:D006623', (129, 132)) ('biallelic inactivation', 'Var', (99, 121)) 30488 20059341 The histology of the VHL clear cell renal tumor and the histology of the sporadic clear cell renal tumor with a VHL gene mutation are identical. ('VHL', 'Disease', (112, 115)) ('VHL', 'Disease', 'MESH:D006623', (112, 115)) ('VHL', 'Disease', 'MESH:D006623', (21, 24)) ('clear cell renal tumor', 'Phenotype', 'HP:0006770', (82, 104)) ('VHL clear cell renal tumor', 'Disease', 'MESH:C538614', (21, 47)) ('VHL', 'Disease', (21, 24)) ('VHL clear cell renal tumor', 'Disease', (21, 47)) ('renal tumor', 'Disease', 'MESH:D007674', (93, 104)) ('renal tumor', 'Phenotype', 'HP:0009726', (93, 104)) ('clear cell renal tumor', 'Phenotype', 'HP:0006770', (25, 47)) ('mutation', 'Var', (121, 129)) ('renal tumor', 'Phenotype', 'HP:0009726', (36, 47)) ('renal tumor', 'Disease', 'MESH:D007674', (36, 47)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) ('renal tumor', 'Disease', (93, 104)) 30505 20059341 Clear cell kidney cancer and kidney cancer associated with von Hippel-Lindau are caused by mutation of the VHL gene, which results in a disorder of oxygen sensing. ('kidney cancer', 'Disease', (29, 42)) ('mutation', 'Var', (91, 99)) ('kidney cancer', 'Disease', 'MESH:D007680', (11, 24)) ('von Hippel-Lindau', 'Gene', (59, 76)) ('kidney cancer', 'Phenotype', 'HP:0009726', (11, 24)) ('Clear cell kidney cancer', 'Disease', 'MESH:D008649', (0, 24)) ('kidney cancer', 'Disease', 'MESH:D007680', (29, 42)) ('von Hippel-Lindau', 'Gene', '7428', (59, 76)) ('cancer', 'Phenotype', 'HP:0002664', (18, 24)) ('results in', 'Reg', (123, 133)) ('caused by', 'Reg', (81, 90)) ('VHL', 'Disease', 'MESH:D006623', (107, 110)) ('kidney cancer', 'Phenotype', 'HP:0009726', (29, 42)) ('oxygen', 'Chemical', 'MESH:D010100', (148, 154)) ('VHL', 'Disease', (107, 110)) ('cancer', 'Phenotype', 'HP:0002664', (36, 42)) ('disorder of oxygen sensing', 'MPA', (136, 162)) ('Clear cell kidney cancer', 'Disease', (0, 24)) 30506 20059341 Hereditary papillary renal cell carcinoma and a subset of sporadic type 1 papillary kidney cancers are caused by mutation of the MET gene. ('MET', 'Gene', (129, 132)) ('mutation', 'Var', (113, 121)) ('papillary kidney cancers', 'Disease', 'MESH:D007681', (74, 98)) ('cancers', 'Phenotype', 'HP:0002664', (91, 98)) ('papillary kidney cancer', 'Phenotype', 'HP:0006766', (74, 97)) ('papillary renal cell carcinoma', 'Phenotype', 'HP:0006766', (11, 41)) ('Hereditary papillary renal cell carcinoma', 'Disease', 'MESH:C538614', (0, 41)) ('carcinoma', 'Phenotype', 'HP:0030731', (32, 41)) ('kidney cancers', 'Phenotype', 'HP:0009726', (84, 98)) ('cancer', 'Phenotype', 'HP:0002664', (91, 97)) ('kidney cancer', 'Phenotype', 'HP:0009726', (84, 97)) ('papillary kidney cancers', 'Disease', (74, 98)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (21, 41)) ('caused by', 'Reg', (103, 112)) ('Hereditary papillary renal cell carcinoma', 'Disease', (0, 41)) 30507 20059341 The hereditary form of chromophobe kidney cancer associated with Birt-Hogg-Dube is caused by mutation of the BHD gene, which is involved with the AMPK/mTOR pathway. ('Birt-Hogg-Dube', 'Gene', (65, 79)) ('cancer', 'Phenotype', 'HP:0002664', (42, 48)) ('associated', 'Reg', (49, 59)) ('kidney cancer', 'Phenotype', 'HP:0009726', (35, 48)) ('Birt-Hogg-Dube', 'Gene', '50947', (65, 79)) ('BHD', 'Gene', '50947', (109, 112)) ('chromophobe kidney cancer', 'Disease', 'MESH:D007680', (23, 48)) ('chromophobe kidney cancer', 'Disease', (23, 48)) ('BHD', 'Gene', (109, 112)) ('mTOR', 'Gene', (151, 155)) ('mTOR', 'Gene', '2475', (151, 155)) ('mutation', 'Var', (93, 101)) ('caused by', 'Reg', (83, 92)) 30508 20059341 The hereditary form of kidney cancer associated with Hereditary Leiomyomatosis Renal Cell Carcinoma is caused by mutation of the gene for the Krebs cycle enzyme, fumarate hydratase. ('kidney cancer', 'Disease', (23, 36)) ('mutation', 'Var', (113, 121)) ('Hereditary Leiomyomatosis Renal Cell Carcinoma', 'Disease', (53, 99)) ('Renal Cell Carcinoma', 'Phenotype', 'HP:0005584', (79, 99)) ('fumarate hydratase', 'Gene', '2271', (162, 180)) ('Krebs', 'Chemical', '-', (142, 147)) ('Hereditary Leiomyomatosis Renal Cell Carcinoma', 'Disease', 'MESH:C535516', (53, 99)) ('kidney cancer', 'Disease', 'MESH:D007680', (23, 36)) ('Carcinoma', 'Phenotype', 'HP:0030731', (90, 99)) ('associated', 'Reg', (37, 47)) ('kidney cancer', 'Phenotype', 'HP:0009726', (23, 36)) ('fumarate hydratase', 'Gene', (162, 180)) ('caused by', 'Reg', (103, 112)) ('cancer', 'Phenotype', 'HP:0002664', (30, 36)) 30509 20059341 The hereditary form of kidney cancer associated with familial pheochromocytoma/paraganglioma results from mutations of the gene for the Krebs cycle enzyme, succinate dehydrogenase B. ('kidney cancer', 'Disease', (23, 36)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (53, 78)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('pheochromocytoma/paraganglioma', 'Disease', (62, 92)) ('Krebs', 'Chemical', '-', (136, 141)) ('kidney cancer', 'Phenotype', 'HP:0009726', (23, 36)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('familial pheochromocytoma', 'Disease', (53, 78)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (62, 92)) ('succinate dehydrogenase B', 'Gene', '6390', (156, 181)) ('kidney cancer', 'Disease', 'MESH:D007680', (23, 36)) ('results from', 'Reg', (93, 105)) ('mutations', 'Var', (106, 115)) ('associated', 'Reg', (37, 47)) ('succinate dehydrogenase B', 'Gene', (156, 181)) ('cancer', 'Phenotype', 'HP:0002664', (30, 36)) 30510 20059341 The hereditary form of angiomyolipoma results from mutations of the TSC1 and TSC2 genes, which are involved in the AMPK/mTOR pathway. ('mutations', 'Var', (51, 60)) ('TSC1', 'Gene', '7248', (68, 72)) ('TSC1', 'Gene', (68, 72)) ('results from', 'Reg', (38, 50)) ('angiomyolipoma', 'Disease', 'MESH:D018207', (23, 37)) ('TSC2', 'Gene', '7249', (77, 81)) ('angiomyolipoma', 'Disease', (23, 37)) ('mTOR', 'Gene', (120, 124)) ('TSC2', 'Gene', (77, 81)) ('mTOR', 'Gene', '2475', (120, 124)) ('angiomyolipoma', 'Phenotype', 'HP:0006772', (23, 37)) 30587 20205783 The importance of genetic testing for mutations in the SHDB, SDHC, and SHDD genes has recently been highlighted. ('SHDB', 'Gene', (55, 59)) ('SDHC', 'Gene', (61, 65)) ('SDHC', 'Gene', '6391', (61, 65)) ('mutations', 'Var', (38, 47)) ('SHDD', 'Gene', (71, 75)) 30588 20205783 Mutations in the VHL and NF1 genes are also associated with inherited paragangliomas. ('associated', 'Reg', (44, 54)) ('inherited paragangliomas', 'Disease', 'MESH:D010235', (60, 84)) ('Mutations', 'Var', (0, 9)) ('VHL', 'Gene', (17, 20)) ('paragangliomas', 'Phenotype', 'HP:0002668', (70, 84)) ('paraganglioma', 'Phenotype', 'HP:0002668', (70, 83)) ('NF1', 'Gene', (25, 28)) ('inherited paragangliomas', 'Disease', (60, 84)) ('VHL', 'Gene', '7428', (17, 20)) ('NF1', 'Gene', '4763', (25, 28)) 30589 20205783 In particular, patients with SDHB mutations are at higher risk for developing malignant paragangliomas. ('patients', 'Species', '9606', (15, 23)) ('SDHB', 'Gene', '6390', (29, 33)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (78, 102)) ('SDHB', 'Gene', (29, 33)) ('mutations', 'Var', (34, 43)) ('paraganglioma', 'Phenotype', 'HP:0002668', (88, 101)) ('paragangliomas', 'Phenotype', 'HP:0002668', (88, 102)) ('malignant paragangliomas', 'Disease', (78, 102)) 30591 20205783 Though these particular patients did not undergo genetic testing, it is probable that gene mutations were the cause of multiple paragangliomas. ('cause', 'Reg', (110, 115)) ('gene mutations', 'Var', (86, 100)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (119, 142)) ('paraganglioma', 'Phenotype', 'HP:0002668', (128, 141)) ('patients', 'Species', '9606', (24, 32)) ('paragangliomas', 'Phenotype', 'HP:0002668', (128, 142)) ('multiple paragangliomas', 'Disease', (119, 142)) 30704 31582983 Risk factors of malignancy include size >5 cm, extra-adrenal locations, SDH gene mutations, and local invasiveness. ('SDH', 'Gene', '10993', (72, 75)) ('malignancy', 'Disease', 'MESH:D009369', (16, 26)) ('SDH', 'Gene', (72, 75)) ('mutations', 'Var', (81, 90)) ('malignancy', 'Disease', (16, 26)) 30795 31205467 Activation of effector molecules in pseudohypoxia signaling is triggered by genetic mutations involving the degradation of hypoxia-inducible factor 1/2alpha or Krebs cycle function, such as succinate dehydrogenase genes (SDHx), VHL, or EPAS1. ('SDHx', 'Chemical', '-', (221, 225)) ('EPAS1', 'Gene', '2034', (236, 241)) ('Krebs', 'Chemical', '-', (160, 165)) ('degradation', 'MPA', (108, 119)) ('EPAS1', 'Gene', (236, 241)) ('pseudohypoxia', 'Disease', (36, 49)) ('hypoxia-inducible factor 1/2alpha', 'Gene', '2034', (123, 156)) ('hypoxia-inducible factor 1/2alpha', 'Gene', (123, 156)) ('mutations', 'Var', (84, 93)) ('Activation', 'PosReg', (0, 10)) ('pseudohypoxia', 'Disease', 'None', (36, 49)) ('VHL', 'Disease', (228, 231)) ('VHL', 'Disease', 'MESH:D006623', (228, 231)) ('SDHx', 'Gene', (221, 225)) 30796 31205467 Hyperactive kinase signaling is induced by mutations involving genes associated with mitogen-activated protein kinase, such as tumor suppressor genes (NF1, TMEM127, MAX, and KIF1Bbeta), RET, or HRAS, which promoted growth independence of extracellular signals. ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('RET', 'Gene', (186, 189)) ('Hyperactive kinase signaling', 'MPA', (0, 28)) ('tumor', 'Disease', (127, 132)) ('TMEM127', 'Gene', (156, 163)) ('HRAS', 'Gene', '3265', (194, 198)) ('NF1', 'Gene', (151, 154)) ('mutations', 'Var', (43, 52)) ('TMEM127', 'Gene', '55654', (156, 163)) ('RET', 'Gene', '5979', (186, 189)) ('NF1', 'Gene', '4763', (151, 154)) ('tumor', 'Disease', 'MESH:D009369', (127, 132)) ('HRAS', 'Gene', (194, 198)) ('induced', 'Reg', (32, 39)) 30797 31205467 Additionally, upregulated WNT signaling has been recently reported in genetic alterations of MAML3 and CSDE1. ('CSDE1', 'Gene', (103, 108)) ('CSDE1', 'Gene', '7812', (103, 108)) ('MAML3', 'Gene', '55534', (93, 98)) ('MAML3', 'Gene', (93, 98)) ('upregulated', 'PosReg', (14, 25)) ('WNT signaling', 'Pathway', (26, 39)) ('genetic alterations', 'Var', (70, 89)) 30806 31205467 Comprehensive analyses have implicated germline mutations involving SDHB, FH, MAX, and SLC25A11 in the origin and development of malignant PC/PG. ('SLC25A11', 'Gene', (87, 95)) ('SLC25A11', 'Gene', '8402', (87, 95)) ('PG', 'Phenotype', 'HP:0002668', (142, 144)) ('SDHB', 'Gene', '6390', (68, 72)) ('SDHB', 'Gene', (68, 72)) ('FH', 'Disease', 'MESH:D006938', (74, 76)) ('mutations', 'Var', (48, 57)) ('PC', 'Phenotype', 'HP:0002666', (139, 141)) 30807 31205467 It is generally recognized that PC/PG carrying germline mutations of SDHB show a higher rate of metastasis. ('SDHB', 'Gene', (69, 73)) ('metastasis', 'CPA', (96, 106)) ('germline mutations', 'Var', (47, 65)) ('PC', 'Phenotype', 'HP:0002666', (32, 34)) ('SDHB', 'Gene', '6390', (69, 73)) ('PG', 'Phenotype', 'HP:0002668', (35, 37)) 30808 31205467 The SDHB mutation in Krebs cycle impairs glucose metabolism, leading to inhibition of 2-oxoglutarate-dependent histone and DNA demethylase enzymes. ('mutation', 'Var', (9, 17)) ('impairs glucose metabolism', 'Disease', (33, 59)) ('Krebs', 'Chemical', '-', (21, 26)) ('2-oxoglutarate', 'Chemical', 'MESH:D007656', (86, 100)) ('SDHB', 'Gene', '6390', (4, 8)) ('SDHB', 'Gene', (4, 8)) ('impairs glucose metabolism', 'Disease', 'MESH:D044882', (33, 59)) ('inhibition', 'NegReg', (72, 82)) ('DNA demethylase enzymes', 'Enzyme', (123, 146)) 30809 31205467 The germline mutation of SDHB was significantly susceptible to malignancy in TCGA and COMETE cohort (p = 0.0049 and p < 0.001, respectively). ('malignancy', 'Disease', 'MESH:D009369', (63, 73)) ('malignancy', 'Disease', (63, 73)) ('SDHB', 'Gene', '6390', (25, 29)) ('germline mutation', 'Var', (4, 21)) ('SDHB', 'Gene', (25, 29)) ('susceptible', 'Reg', (48, 59)) 30810 31205467 Mutations involving SDHx or FH lead to DNA hypermethylation, explaining both the tumor-suppressive role of these genes and the phenotypic characteristics. ('DNA hypermethylation', 'MPA', (39, 59)) ('FH', 'Disease', 'MESH:D006938', (28, 30)) ('SDHx', 'Gene', (20, 24)) ('tumor', 'Disease', 'MESH:D009369', (81, 86)) ('Mutations', 'Var', (0, 9)) ('SDHx', 'Chemical', '-', (20, 24)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('tumor', 'Disease', (81, 86)) 30811 31205467 In particular, the malignancy of SDHB mutation is attributed to severe epigenetic silencing of genes involved in cell differentiation and epithelial-to-mesenchymal transition. ('malignancy', 'Disease', (19, 29)) ('SDHB', 'Gene', '6390', (33, 37)) ('SDHB', 'Gene', (33, 37)) ('malignancy', 'Disease', 'MESH:D009369', (19, 29)) ('mutation', 'Var', (38, 46)) ('epigenetic silencing', 'Var', (71, 91)) 30812 31205467 RDBP hypermethylation may alter transcriptional networks involving apoptosis, invasion, and maintenance of DNA integrity. ('apoptosis', 'CPA', (67, 76)) ('invasion', 'CPA', (78, 86)) ('alter', 'Reg', (26, 31)) ('RDBP', 'Gene', '7936', (0, 4)) ('hypermethylation', 'Var', (5, 21)) ('transcriptional networks', 'MPA', (32, 56)) ('RDBP', 'Gene', (0, 4)) 30823 30444046 However, epigenetic changes, such as DNA methylation and histone modifications, play a pivotal role in the initiation and progression of cancer. ('cancer', 'Phenotype', 'HP:0002664', (137, 143)) ('cancer', 'Disease', 'MESH:D009369', (137, 143)) ('DNA methylation', 'Var', (37, 52)) ('cancer', 'Disease', (137, 143)) ('histone', 'MPA', (57, 64)) ('play', 'Reg', (80, 84)) 30825 30444046 Simultaneously, tumor suppressor genes (TSGs) can be inactivated by promoter hypermethylation (Llinas-Arias and Esteller, 2017). ('tumor', 'Disease', 'MESH:D009369', (16, 21)) ('tumor', 'Phenotype', 'HP:0002664', (16, 21)) ('promoter hypermethylation', 'Var', (68, 93)) ('Llinas-Arias', 'Disease', (95, 107)) ('inactivated', 'NegReg', (53, 64)) ('tumor', 'Disease', (16, 21)) ('Llinas-Arias', 'Disease', 'MESH:D005878', (95, 107)) 30826 30444046 CpG island hypermethylation in cancer cells is associated with a decrease in histone active marks: histone H3 and H4 acetylation, H3K4 trimethylation, and gain of repressive marks: H3K9me3 and H3K27me3 (Llinas-Arias and Esteller, 2017). ('H3K27me3', 'Var', (193, 201)) ('H3K4', 'Protein', (130, 134)) ('cancer', 'Phenotype', 'HP:0002664', (31, 37)) ('hypermethylation', 'Var', (11, 27)) ('histone H3', 'Protein', (99, 109)) ('H3K9me3', 'Protein', (181, 188)) ('Llinas-Arias', 'Disease', 'MESH:D005878', (203, 215)) ('gain', 'PosReg', (155, 159)) ('histone', 'MPA', (77, 84)) ('decrease', 'NegReg', (65, 73)) ('cancer', 'Disease', 'MESH:D009369', (31, 37)) ('repressive', 'MPA', (163, 173)) ('cancer', 'Disease', (31, 37)) ('Llinas-Arias', 'Disease', (203, 215)) 30841 30444046 This KRAB-ZNF is upregulated in bladder cancer, while its knockdown induces apoptosis and reduces the viability of cancer cells in in vitro and in vivo experiments (Kawahara et al., 2016). ('induces', 'Reg', (68, 75)) ('cancer', 'Disease', (115, 121)) ('bladder cancer', 'Phenotype', 'HP:0009725', (32, 46)) ('bladder cancer', 'Disease', 'MESH:D001749', (32, 46)) ('bladder cancer', 'Disease', (32, 46)) ('upregulated', 'PosReg', (17, 28)) ('cancer', 'Disease', 'MESH:D009369', (40, 46)) ('reduces', 'NegReg', (90, 97)) ('cancer', 'Phenotype', 'HP:0002664', (115, 121)) ('cancer', 'Disease', (40, 46)) ('cancer', 'Disease', 'MESH:D009369', (115, 121)) ('ZNF', 'Gene', (10, 13)) ('apoptosis', 'CPA', (76, 85)) ('cancer', 'Phenotype', 'HP:0002664', (40, 46)) ('knockdown', 'Var', (58, 67)) ('ZNF', 'Gene', '284390', (10, 13)) 30871 30444046 For breast cancer, we used nine different cell lines representing distinct molecular subtypes: luminal A (MCF7, T47D), luminal B (BT474), basal (BT20, BT549, HS578T, MDA-MB231, MDA-MB468), and HER2 positive (SKBR3). ('T47D', 'CellLine', 'CVCL:0553', (112, 116)) ('HER2', 'Gene', (193, 197)) ('MDA-MB231', 'CellLine', 'CVCL:0062', (166, 175)) ('MDA-MB231', 'Var', (166, 175)) ('SKBR3', 'CellLine', 'CVCL:0033', (208, 213)) ('MDA-MB468', 'Var', (177, 186)) ('HS578T', 'CellLine', 'CVCL:0332', (158, 164)) ('HER2', 'Gene', '2064', (193, 197)) ('breast cancer', 'Disease', 'MESH:D001943', (4, 17)) ('MDA-MB468', 'CellLine', 'CVCL:0419', (177, 186)) ('BT549', 'CellLine', 'CVCL:1092', (151, 156)) ('breast cancer', 'Phenotype', 'HP:0003002', (4, 17)) ('breast cancer', 'Disease', (4, 17)) ('cancer', 'Phenotype', 'HP:0002664', (11, 17)) ('MCF7', 'CellLine', 'CVCL:0031', (106, 110)) ('BT20', 'Var', (145, 149)) ('HS578T', 'Var', (158, 164)) 30893 30444046 Interestingly, the majority of the KRAB-ZNFs with an altered mRNA level exhibited reduced expression, while only a small but distinct cluster of 16 KRAB-ZNFs showed upregulation in multiple cancer types (Fig. ('ZNFs', 'Chemical', '-', (40, 44)) ('multiple cancer', 'Disease', (181, 196)) ('reduced', 'NegReg', (82, 89)) ('expression', 'MPA', (90, 100)) ('altered', 'Var', (53, 60)) ('ZNFs', 'Chemical', '-', (153, 157)) ('cancer', 'Phenotype', 'HP:0002664', (190, 196)) ('upregulation', 'PosReg', (165, 177)) ('mRNA level', 'MPA', (61, 71)) ('multiple cancer', 'Disease', 'MESH:D009369', (181, 196)) 30927 30444046 As aberrant splicing is a frequent event in carcinogenesis, we wanted to explore the isoform signature for cancer-associated KRAB-ZNFs in TCGA datasets. ('carcinogenesis', 'Disease', 'MESH:D063646', (44, 58)) ('cancer', 'Phenotype', 'HP:0002664', (107, 113)) ('carcinogenesis', 'Disease', (44, 58)) ('cancer', 'Disease', 'MESH:D009369', (107, 113)) ('aberrant splicing', 'Var', (3, 20)) ('cancer', 'Disease', (107, 113)) ('ZNFs', 'Chemical', '-', (130, 134)) 30930 30444046 As expected, we found that a majority of splicing variants (84.5%) were overexpressed in cancer tissues compared to their normal counterparts (Fig. ('splicing variants', 'Var', (41, 58)) ('overexpressed', 'PosReg', (72, 85)) ('cancer', 'Disease', 'MESH:D009369', (89, 95)) ('cancer', 'Disease', (89, 95)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) 30931 30444046 Out of 490 significant isoforms, 21 variants (4.3%) showed expression only in cancer tissues, 220 variants (44.9%) were strongly overexpressed in cancer compared to normal (>= 2-fold overexpression, with the highest level reaching 652-fold change), and 173 variants (35.3%) showed mild overexpression (FC < 2 and >= 1.2). ('cancer', 'Disease', (146, 152)) ('cancer', 'Disease', 'MESH:D009369', (146, 152)) ('cancer', 'Disease', (78, 84)) ('cancer', 'Disease', 'MESH:D009369', (78, 84)) ('expression', 'MPA', (59, 69)) ('cancer', 'Phenotype', 'HP:0002664', (146, 152)) ('variants', 'Var', (36, 44)) ('cancer', 'Phenotype', 'HP:0002664', (78, 84)) ('overexpression', 'PosReg', (286, 300)) ('overexpressed', 'PosReg', (129, 142)) ('variants', 'Var', (98, 106)) 30932 30444046 It is of note that 21 isoforms that fell below the detection threshold in normal samples included mainly truncated and nonsense variants of ZNF695. ('ZNF695', 'Gene', '57116', (140, 146)) ('nonsense', 'Var', (119, 127)) ('ZNF695', 'Gene', (140, 146)) 30937 30444046 ZNF273, the isoform with a 5' partial deletion of the KRAB domain, was switched to three other isoforms, which could be translated to a full-length protein, a variant with a C-terminal partial deletion of the KRAB domain, and a protein devoid of the zinc finger domain. ('ZNF273', 'Gene', (0, 6)) ('partial deletion', 'Var', (30, 46)) ('ZNF273', 'Gene', '10793', (0, 6)) 30942 30444046 Four out of five ZNF273 variants (Fig. ('ZNF273', 'Gene', '10793', (17, 23)) ('ZNF273', 'Gene', (17, 23)) ('variants', 'Var', (24, 32)) 31000 30444046 Finally, our survival analysis indicated that the expression of KRAB-ZNFs may act as a risk factor. ('KRAB-ZNFs', 'Gene', (64, 73)) ('ZNFs', 'Chemical', '-', (69, 73)) ('expression', 'Var', (50, 60)) 31001 30444046 Patients with high expression of five out of 10 analyzed KRAB-ZNFs presented significantly shorter overall survival than those with low expression (Fig. ('ZNFs', 'Chemical', '-', (62, 66)) ('overall survival', 'MPA', (99, 115)) ('Patients', 'Species', '9606', (0, 8)) ('high expression', 'Var', (14, 29)) ('KRAB-ZNFs', 'Gene', (57, 66)) ('shorter', 'NegReg', (91, 98)) 31003 30444046 In contrast, high expression was associated with better prognosis in the case of ZNF205 (P < 0.001, hazard ratio = 0.5), ZNF707 (P = 0.001, hazard ratio = 0.5), and ZNF789 (P = 0.017, hazard ratio = 0.5) (Fig. ('ZNF205', 'Gene', (81, 87)) ('high', 'Var', (13, 17)) ('ZNF707', 'Gene', '286075', (121, 127)) ('ZNF789', 'Gene', (165, 171)) ('ZNF789', 'Gene', '285989', (165, 171)) ('better', 'PosReg', (49, 55)) ('ZNF205', 'Gene', '7755', (81, 87)) ('ZNF707', 'Gene', (121, 127)) 31018 30444046 We observed that the majority of variants was detected both in normal and cancer tissues, but as expected, they had a higher level in tumors. ('tumors', 'Disease', (134, 140)) ('tumors', 'Disease', 'MESH:D009369', (134, 140)) ('tumors', 'Phenotype', 'HP:0002664', (134, 140)) ('cancer', 'Disease', 'MESH:D009369', (74, 80)) ('cancer', 'Phenotype', 'HP:0002664', (74, 80)) ('cancer', 'Disease', (74, 80)) ('tumor', 'Phenotype', 'HP:0002664', (134, 139)) ('variants', 'Var', (33, 41)) 31019 30444046 The differential expression of KRAB-ZNF splicing isoforms in cancer was reported only by Juarez-Mendez and colleagues (Juarez-Mendez et al., 2013), who demonstrated a specific increase of ZNF695 variants in ovarian cancer compared to normal cells. ('ZNF', 'Gene', (36, 39)) ('variants', 'Var', (195, 203)) ('increase', 'PosReg', (176, 184)) ('cancer', 'Disease', 'MESH:D009369', (61, 67)) ('cancer', 'Disease', (215, 221)) ('cancer', 'Disease', 'MESH:D009369', (215, 221)) ('ovarian cancer', 'Disease', (207, 221)) ('ZNF', 'Gene', (188, 191)) ('cancer', 'Disease', (61, 67)) ('ZNF', 'Gene', '284390', (36, 39)) ('ZNF695', 'Gene', '57116', (188, 194)) ('cancer', 'Phenotype', 'HP:0002664', (61, 67)) ('ZNF', 'Gene', '284390', (188, 191)) ('cancer', 'Phenotype', 'HP:0002664', (215, 221)) ('ovarian cancer', 'Disease', 'MESH:D010051', (207, 221)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (207, 221)) ('ZNF695', 'Gene', (188, 194)) 31030 30444046 Furthermore, we have previously shown that ZNF695 was upregulated in pluripotent stem cells compared to more specialized cell types, whereas its knockdown resulted in the loss of self-renewal properties and differentiation of pluripotent stem cells (Oleksiewicz et al., 2017). ('ZNF695', 'Gene', '57116', (43, 49)) ('knockdown', 'Var', (145, 154)) ('upregulated', 'PosReg', (54, 65)) ('self-renewal properties', 'CPA', (179, 202)) ('differentiation', 'CPA', (207, 222)) ('ZNF695', 'Gene', (43, 49)) ('loss', 'NegReg', (171, 175)) 31047 28973655 Literature review revealed evidence of an association, in addition to VHL disease, between germline mutations in SDHB, SDHC, SDHD, TMEM127, and MAX genes and RAPTAS [defined here as the co-occurrence of tumors from both classes (PC/PGL/HNPGL and renal tumors) in the same individual or in first-degree relatives]. ('VHL disease', 'Disease', (70, 81)) ('renal tumor', 'Phenotype', 'HP:0009726', (246, 257)) ('tumors', 'Phenotype', 'HP:0002664', (252, 258)) ('SDHC', 'Gene', '6391', (119, 123)) ('PC', 'Phenotype', 'HP:0002666', (229, 231)) ('tumors', 'Phenotype', 'HP:0002664', (203, 209)) ('tumor', 'Phenotype', 'HP:0002664', (252, 257)) ('SDHD', 'Gene', '6392', (125, 129)) ('tumors', 'Disease', (252, 258)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('tumors', 'Disease', (203, 209)) ('renal tumors', 'Disease', (246, 258)) ('PGL', 'Phenotype', 'HP:0002668', (232, 235)) ('TMEM127', 'Chemical', '-', (131, 138)) ('renal tumors', 'Disease', 'MESH:D007674', (246, 258)) ('tumors', 'Disease', 'MESH:D009369', (252, 258)) ('mutations', 'Var', (100, 109)) ('SDHC', 'Gene', (119, 123)) ('SDHD', 'Gene', (125, 129)) ('tumors', 'Disease', 'MESH:D009369', (203, 209)) ('TMEM127', 'Gene', (131, 138)) ('association', 'Interaction', (42, 53)) ('SDHB', 'Gene', (113, 117)) ('VHL disease', 'Disease', 'MESH:D006623', (70, 81)) ('renal tumors', 'Phenotype', 'HP:0009726', (246, 258)) ('PGL', 'Phenotype', 'HP:0002668', (238, 241)) ('HNPGL', 'Phenotype', 'HP:0002864', (236, 241)) 31048 28973655 In both the literature review and our case series of 22 probands with non-VHL RAPTAS, SDHB mutations were the most frequent cause of non-VHL RAPTAS. ('VHL', 'Gene', (74, 77)) (', SDHB', 'Gene', '6390', (84, 90)) ('VHL', 'Gene', (137, 140)) ('VHL', 'Gene', '7428', (74, 77)) ('frequent cause', 'Reg', (115, 129)) ('mutations', 'Var', (91, 100)) ('VHL', 'Gene', '7428', (137, 140)) 31050 28973655 We report a case of MAX-associated renal cell carcinoma and confirm the role of TMEM127 mutations with renal cell carcinoma predisposition. ('renal cell carcinoma', 'Disease', (103, 123)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (35, 55)) ('TMEM127', 'Chemical', '-', (80, 87)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (103, 123)) ('carcinoma', 'Phenotype', 'HP:0030731', (46, 55)) ('TMEM127', 'Gene', (80, 87)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (35, 55)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (103, 123)) ('carcinoma', 'Phenotype', 'HP:0030731', (114, 123)) ('mutations', 'Var', (88, 97)) ('renal cell carcinoma', 'Disease', (35, 55)) 31087 28973655 All cases were tested for germline mutations in VHL, and SDHB and 8/12 (67%) of probands from group A and 6/10 (60%) of probands from cohort B were also tested for mutations in SDHA, SDHC, SDHD, SDHAF2, FH, MAX, and TMEM127. ('FH', 'Disease', 'MESH:D006938', (203, 205)) ('SDHB', 'Gene', (57, 61)) ('SDHA', 'Chemical', '-', (177, 181)) ('SDHC', 'Gene', '6391', (183, 187)) ('VHL', 'Gene', (48, 51)) ('SDHA', 'Gene', (177, 181)) ('VHL', 'Gene', '7428', (48, 51)) ('tested', 'Reg', (15, 21)) ('MAX', 'Gene', (207, 210)) ('SDHD', 'Gene', '6392', (189, 193)) ('SDHC', 'Gene', (183, 187)) ('SDHD', 'Gene', (189, 193)) ('mutations', 'Var', (164, 173)) ('SDHAF2', 'Gene', (195, 201)) ('SDHA', 'Chemical', '-', (195, 199)) ('tested', 'Reg', (153, 159)) ('TMEM127', 'Chemical', '-', (216, 223)) ('TMEM127', 'Gene', (216, 223)) ('mutations', 'Var', (35, 44)) 31088 28973655 One proband was diagnosed with a variant in SDHD (c.34G>A, p.Gly12Ser) that was not considered pathogenic and did not prompt family screening. ('SDHD', 'Gene', (44, 48)) ('SDHD', 'Gene', '6392', (44, 48)) ('c.34G>A', 'Var', (50, 57)) ('c.34G>A', 'Mutation', 'rs34677591', (50, 57)) ('p.Gly12Ser', 'Mutation', 'rs34677591', (59, 69)) 31089 28973655 One proband presenting with RCC and unilateral PC age 43 years had a truncating mutation in the MAX gene (Table 1). ('RCC', 'Disease', 'MESH:C538614', (28, 31)) ('MAX', 'Gene', (96, 99)) ('PC', 'Phenotype', 'HP:0002666', (47, 49)) ('truncating mutation', 'Var', (69, 88)) ('RCC', 'Disease', (28, 31)) ('RCC', 'Phenotype', 'HP:0005584', (28, 31)) 31090 28973655 Another proband from group A was found to have a truncating mutation in TMEM127 (Table 1). ('truncating mutation', 'Var', (49, 68)) ('TMEM127', 'Gene', (72, 79)) ('TMEM127', 'Chemical', '-', (72, 79)) 31091 28973655 No statistically significant correlation was identified for younger age at first tumor diagnosis, PGL, renal oncocytoma or malignant PGL, and the identification of a genetic mutation (P > 0.05 for all associations). ('renal oncocytoma', 'Phenotype', 'HP:0011798', (103, 119)) ('renal oncocytoma', 'Disease', (103, 119)) ('PGL', 'Phenotype', 'HP:0002668', (133, 136)) ('PGL', 'Phenotype', 'HP:0002668', (98, 101)) ('genetic mutation', 'Var', (166, 182)) ('tumor', 'Disease', 'MESH:D009369', (81, 86)) ('PGL', 'Disease', (98, 101)) ('malignant PGL', 'Disease', (123, 136)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('renal oncocytoma', 'Disease', 'MESH:C537750', (103, 119)) ('tumor', 'Disease', (81, 86)) 31092 28973655 The mean MTS value in group A patients with a mutation was 3.6 compared with 1.8 in those without a mutation (P = 0.09). ('patients', 'Species', '9606', (30, 38)) ('MTS', 'MPA', (9, 12)) ('mutation', 'Var', (46, 54)) 31094 28973655 Analysis of DNA extracted from the PC and RCC tumors from case 10 with the germline mutation in the MAX gene (c.97C>T p. Arg33*) revealed loss of heterozygosity , with higher reads in the mutant allele identified in the PC [reads wild-type/mutant: 77/151 (depth 228) and RCC (reads: 60/179, depth 239) compared with the germline (157/157, depth 314) [germline.v's.PC P = 0.0002; germline.v's.RCC P < 0.0001 (Fisher's exact test)]. ('tumor', 'Phenotype', 'HP:0002664', (46, 51)) ('RCC tumors', 'Disease', 'MESH:C538614', (42, 52)) ('reads', 'MPA', (175, 180)) ('tumors', 'Phenotype', 'HP:0002664', (46, 52)) ('RCC', 'Phenotype', 'HP:0005584', (392, 395)) ('RCC', 'Disease', (392, 395)) ('Arg33', 'Chemical', '-', (121, 126)) ('PC', 'Phenotype', 'HP:0002666', (364, 366)) ('RCC', 'Disease', (271, 274)) ('RCC', 'Phenotype', 'HP:0005584', (271, 274)) ('PC', 'Phenotype', 'HP:0002666', (220, 222)) ('RCC', 'Disease', (42, 45)) ('RCC', 'Phenotype', 'HP:0005584', (42, 45)) ('RCC', 'Disease', 'MESH:C538614', (392, 395)) ('RCC', 'Disease', 'MESH:C538614', (271, 274)) ('PC', 'Phenotype', 'HP:0002666', (35, 37)) ('mutant', 'Var', (188, 194)) ('RCC', 'Disease', 'MESH:C538614', (42, 45)) ('higher', 'PosReg', (168, 174)) ('c.97C>T', 'Mutation', 'rs1295386976', (110, 117)) ('RCC tumors', 'Disease', (42, 52)) 31097 28973655 No somatic mutation in SDHA/SDHB/SDHC/SDHD was identified in either tumor, but a somatic variant (not present in the germline) in VHL (c.245G>T p Arg82Leu) was identified in the PC tumor but not the RCC from case 2. ('Arg82Leu', 'SUBSTITUTION', 'None', (146, 154)) ('PC tumor', 'Disease', (178, 186)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) ('tumor', 'Disease', (68, 73)) ('SDHC', 'Gene', '6391', (33, 37)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('SDHA', 'Chemical', '-', (23, 27)) ('SDHD', 'Gene', '6392', (38, 42)) ('VHL', 'Gene', (130, 133)) ('PC', 'Phenotype', 'HP:0002666', (178, 180)) ('SDHD', 'Gene', (38, 42)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('RCC', 'Disease', (199, 202)) ('RCC', 'Phenotype', 'HP:0005584', (199, 202)) ('SDHC', 'Gene', (33, 37)) ('tumor', 'Disease', (181, 186)) ('PC tumor', 'Disease', 'MESH:D015324', (178, 186)) ('Arg82Leu', 'Var', (146, 154)) ('c.245G>T', 'Mutation', 'rs890210469', (135, 143)) ('tumor', 'Disease', 'MESH:D009369', (181, 186)) ('VHL', 'Gene', '7428', (130, 133)) ('RCC', 'Disease', 'MESH:C538614', (199, 202)) 31098 28973655 Germline mutations in at least 25 different genes have been reported to predispose to PC/PGL/HNPGL or RCC (NF1, RET, MAX, EGLN1, EGLN2, MSH2, KIFIB, SDHAF2,MEN1, BAP1, CDC73, CDKN2B, FLCN, MET, PBRM1, PTEN, TSC1, TSC2, FH, SDHA, SDHB, SDHC, SDHD, TMEM127, and VHL). ('PGL', 'Phenotype', 'HP:0002668', (95, 98)) ('FH', 'Disease', 'MESH:D006938', (219, 221)) ('MSH2', 'Gene', (136, 140)) ('VHL', 'Gene', (260, 263)) ('mutations', 'Var', (9, 18)) ('RCC', 'Disease', 'MESH:C538614', (102, 105)) ('CDKN2', 'Gene', '1017', (175, 180)) ('SDHC', 'Gene', (235, 239)) ('CDC73', 'Gene', '79577', (168, 173)) ('PC', 'Phenotype', 'HP:0002666', (86, 88)) ('SDHD', 'Gene', (241, 245)) ('SDHA', 'Chemical', '-', (223, 227)) ('TSC2', 'Gene', (213, 217)) ('SDHA', 'Gene', (223, 227)) ('PTEN', 'Gene', (201, 205)) ('MSH2', 'Gene', '4436', (136, 140)) ('SDHB', 'Gene', (229, 233)) ('VHL', 'Gene', '7428', (260, 263)) ('PC/PGL/HNPGL', 'Disease', (86, 98)) ('predispose', 'Reg', (72, 82)) ('BAP1', 'Gene', '8314', (162, 166)) ('SDHA', 'Chemical', '-', (149, 153)) (', FLCN', 'Gene', '201163', (181, 187)) ('SDHC', 'Gene', '6391', (235, 239)) ('HNPGL', 'Phenotype', 'HP:0002864', (93, 98)) ('PGL', 'Phenotype', 'HP:0002668', (89, 92)) ('CDKN2', 'Gene', (175, 180)) ('TMEM127', 'Chemical', '-', (247, 254)) ('BAP1', 'Gene', (162, 166)) ('RCC', 'Disease', (102, 105)) ('RCC', 'Phenotype', 'HP:0005584', (102, 105)) ('SDHD', 'Gene', '6392', (241, 245)) ('CDC73', 'Gene', (168, 173)) 31099 28973655 However, with the exception of VHL disease and, to a lesser extent, SDHB mutations, other reported genetic causes of RAPTAS (as defined here) are rare. ('VHL disease', 'Disease', (31, 42)) ('RAPTAS', 'Disease', (117, 123)) (', SDHB', 'Gene', '6390', (66, 72)) ('VHL disease', 'Disease', 'MESH:D006623', (31, 42)) ('mutations', 'Var', (73, 82)) 31103 28973655 Metastatic RCC was reported in five patients with SDHB mutations, one patient with an SDHC mutation, and one patient with an SDHD mutation. ('patient', 'Species', '9606', (36, 43)) ('patient', 'Species', '9606', (109, 116)) ('patients', 'Species', '9606', (36, 44)) ('mutations', 'Var', (55, 64)) ('SDHB', 'Gene', (50, 54)) ('patient', 'Species', '9606', (70, 77)) ('SDHD', 'Gene', '6392', (125, 129)) ('SDHC', 'Gene', (86, 90)) ('reported', 'Reg', (19, 27)) ('RCC', 'Phenotype', 'HP:0005584', (11, 14)) ('RCC', 'Disease', 'MESH:C538614', (11, 14)) ('SDHC', 'Gene', '6391', (86, 90)) ('RCC', 'Disease', (11, 14)) ('SDHD', 'Gene', (125, 129)) 31106 28973655 Renal oncocytoma was described as part of three cases of RAPTAS (two with an SDHB mutation and one with a MAX mutation) (Table 3). ('Renal oncocytoma', 'Disease', 'MESH:C537750', (0, 16)) ('Renal oncocytoma', 'Disease', (0, 16)) ('mutation', 'Var', (82, 90)) ('Renal oncocytoma', 'Phenotype', 'HP:0011798', (0, 16)) ('SDHB', 'Gene', (77, 81)) ('RAPTAS', 'Disease', (57, 63)) 31107 28973655 In addition to patients with RAPTAS, separate case reports of PC/PGL/HNPGL or renal tumors have been reported in association with the six genes described in Table 3, as well as with mutations in FH and SDHA (although no cases of coexisting PC/PGL and RCC in the same patient had been reported in conjunction with a mutation in FH/SDHA). ('patients', 'Species', '9606', (15, 23)) ('renal tumors', 'Disease', 'MESH:D007674', (78, 90)) ('PC', 'Phenotype', 'HP:0002666', (62, 64)) ('tumors', 'Phenotype', 'HP:0002664', (84, 90)) ('RCC', 'Disease', 'MESH:C538614', (251, 254)) ('renal tumors', 'Phenotype', 'HP:0009726', (78, 90)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('PC/PGL/HNPGL', 'Disease', (62, 74)) ('renal tumor', 'Phenotype', 'HP:0009726', (78, 89)) ('mutations', 'Var', (182, 191)) ('patient', 'Species', '9606', (15, 22)) ('SDHA', 'Chemical', '-', (330, 334)) ('PGL', 'Phenotype', 'HP:0002668', (243, 246)) ('FH', 'Disease', 'MESH:D006938', (327, 329)) ('SDHA', 'Chemical', '-', (202, 206)) ('patient', 'Species', '9606', (267, 274)) ('SDHA', 'Gene', (202, 206)) ('HNPGL', 'Phenotype', 'HP:0002864', (69, 74)) ('association', 'Reg', (113, 124)) ('renal tumors', 'Disease', (78, 90)) ('PGL', 'Phenotype', 'HP:0002668', (65, 68)) ('RCC', 'Disease', (251, 254)) ('RCC', 'Phenotype', 'HP:0005584', (251, 254)) ('PC', 'Phenotype', 'HP:0002666', (240, 242)) ('PGL', 'Phenotype', 'HP:0002668', (71, 74)) ('FH', 'Disease', 'MESH:D006938', (195, 197)) 31111 28973655 Also, germline mutations in MET cause familial type 1 papillary RCC and recently MET variants have been linked to PC/PGL susceptibility. ('linked', 'Reg', (104, 110)) ('variants', 'Var', (85, 93)) ('familial type 1 papillary RCC', 'Disease', 'MESH:C538614', (38, 67)) ('germline mutations', 'Var', (6, 24)) ('RCC', 'Phenotype', 'HP:0005584', (64, 67)) ('MET', 'Gene', (28, 31)) ('PGL', 'Phenotype', 'HP:0002668', (117, 120)) ('familial type 1 papillary RCC', 'Disease', (38, 67)) ('cause', 'Reg', (32, 37)) ('PC', 'Phenotype', 'HP:0002666', (114, 116)) 31112 28973655 In both the literature review and case series, SDHB mutations were the most common identified cause of non-VHL RAPTAS. ('mutations', 'Var', (52, 61)) ('VHL', 'Gene', '7428', (107, 110)) (', SDHB', 'Gene', '6390', (45, 51)) ('cause', 'Reg', (94, 99)) ('VHL', 'Gene', (107, 110)) 31113 28973655 Less frequently, RAPTAS was associated with mutations in other SDHx genes and mutations in TMEM127 and MAX. ('TMEM127', 'Chemical', '-', (91, 98)) ('RAPTAS', 'Disease', (17, 23)) ('associated', 'Reg', (28, 38)) ('TMEM127', 'Gene', (91, 98)) ('mutations', 'Var', (78, 87)) ('SDHx genes', 'Gene', (63, 73)) ('mutations', 'Var', (44, 53)) ('SDHx', 'Chemical', '-', (63, 67)) 31116 28973655 described a germline MAX mutation (a large, complex genomic alteration encompassing the intragenic and promoter regions of MAX and FUT8) in a patient with renal oncocytoma, bilateral PC, and erythrocytosis and two siblings with bilateral PC. ('MAX', 'Gene', (21, 24)) ('PC', 'Phenotype', 'HP:0002666', (238, 240)) ('mutation', 'Var', (25, 33)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (191, 205)) ('renal oncocytoma', 'Disease', 'MESH:C537750', (155, 171)) ('erythrocytosis', 'Disease', (191, 205)) ('patient', 'Species', '9606', (142, 149)) ('erythrocytosis', 'Disease', 'MESH:D011086', (191, 205)) ('renal oncocytoma', 'Disease', (155, 171)) ('PC', 'Phenotype', 'HP:0002666', (183, 185)) ('renal oncocytoma', 'Phenotype', 'HP:0011798', (155, 171)) 31117 28973655 In this study, we report the association of RCC with a germline MAX mutation (c.97C>T p. Arg33*). ('c.97C>T p. Arg33*', 'Var', (78, 95)) ('c.97C>T', 'Mutation', 'rs1295386976', (78, 85)) ('Arg33', 'Chemical', '-', (89, 94)) ('association', 'Reg', (29, 40)) ('RCC', 'Disease', 'MESH:C538614', (44, 47)) ('RCC', 'Disease', (44, 47)) ('RCC', 'Phenotype', 'HP:0005584', (44, 47)) 31119 28973655 This finding expands the phenotype associated with MAX mutations and raises the intriguing possibility that MAX may be a candidate gene for inherited RCC [SDHB mutations were originally described in association with PC/PGL/HNPGL, then with RAPTAS, and then familial RCC-only phenotypes]. ('HNPGL', 'Phenotype', 'HP:0002864', (223, 228)) ('mutations', 'Var', (160, 169)) ('SDHB', 'Gene', (155, 159)) ('RCC', 'Disease', 'MESH:C538614', (266, 269)) ('RCC', 'Disease', (266, 269)) ('RCC', 'Disease', 'MESH:C538614', (150, 153)) ('RCC', 'Disease', (150, 153)) ('PGL', 'Phenotype', 'HP:0002668', (219, 222)) ('RCC', 'Phenotype', 'HP:0005584', (150, 153)) ('RCC', 'Phenotype', 'HP:0005584', (266, 269)) ('PC/PGL/HNPGL', 'Disease', (216, 228)) ('PC', 'Phenotype', 'HP:0002666', (216, 218)) ('association', 'Reg', (199, 210)) ('PGL', 'Phenotype', 'HP:0002668', (225, 228)) 31120 28973655 Although mutations in all RAPTAS genes are inherited in autosomal dominant manner, mutations in MAX and SDHD show a parent-of-origin-dependent tumorigenesis, and tumors occur almost exclusively following paternal transmission of the mutation. ('mutations', 'Var', (83, 92)) ('tumor', 'Phenotype', 'HP:0002664', (162, 167)) ('tumor', 'Disease', (143, 148)) ('MAX', 'Gene', (96, 99)) ('tumor', 'Disease', (162, 167)) ('RAPTAS', 'Gene', (26, 32)) ('SDHD', 'Gene', '6392', (104, 108)) ('tumors', 'Disease', (162, 168)) ('tumors', 'Disease', 'MESH:D009369', (162, 168)) ('tumor', 'Disease', 'MESH:D009369', (143, 148)) ('tumors', 'Phenotype', 'HP:0002664', (162, 168)) ('SDHD', 'Gene', (104, 108)) ('parent-of-origin-dependent', 'CPA', (116, 142)) ('tumor', 'Disease', 'MESH:D009369', (162, 167)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) 31121 28973655 Hence the clinical management and genetic counseling of RAPTAS kindreds with SDHD and MAX mutations will differ from those with mutations in other RAPTAS genes. ('SDHD', 'Gene', (77, 81)) ('MAX', 'Gene', (86, 89)) ('SDHD', 'Gene', '6392', (77, 81)) ('mutations', 'Var', (90, 99)) 31122 28973655 We describe the second reported case of a patient with RAPTAS resulting from a mutation in TMEM127. ('TMEM127', 'Chemical', '-', (91, 98)) ('resulting from', 'Reg', (62, 76)) ('TMEM127', 'Gene', (91, 98)) ('RAPTAS', 'Disease', (55, 61)) ('patient', 'Species', '9606', (42, 49)) ('mutation', 'Var', (79, 87)) 31124 28973655 A germline deletion mutation in TMEM127 (c.308delG) and an additional germline variant in SDHB (159_*184delins25) was identified in this patient, but SDHB immunohistochemistry showed preservation of SDHB expression in both tumors. ('TMEM127', 'Chemical', '-', (32, 39)) ('tumor', 'Phenotype', 'HP:0002664', (223, 228)) ('SDHB', 'Gene', (90, 94)) ('patient', 'Species', '9606', (137, 144)) ('tumors', 'Disease', (223, 229)) ('tumors', 'Disease', 'MESH:D009369', (223, 229)) ('tumors', 'Phenotype', 'HP:0002664', (223, 229)) ('c.308delG', 'Var', (41, 50)) ('TMEM127', 'Gene', (32, 39)) ('159_*184delins25', 'Mutation', 'c.159_*184delins25', (96, 112)) ('c.308delG', 'Mutation', 'c.308delG', (41, 50)) ('159_*184delins25', 'Var', (96, 112)) ('expression', 'MPA', (204, 214)) 31125 28973655 Histology of the RCC in RAPTAS patient 11 with a TMEM127 mutation demonstrated a clear-cell RCC. ('mutation', 'Var', (57, 65)) ('TMEM127', 'Gene', (49, 56)) ('RCC', 'Phenotype', 'HP:0005584', (17, 20)) ('RCC', 'Disease', (92, 95)) ('RCC', 'Phenotype', 'HP:0005584', (92, 95)) ('patient', 'Species', '9606', (31, 38)) ('TMEM127', 'Chemical', '-', (49, 56)) ('RCC', 'Disease', 'MESH:C538614', (17, 20)) ('RCC', 'Disease', (17, 20)) ('RCC', 'Disease', 'MESH:C538614', (92, 95)) 31127 28973655 Clear-cell RCC, PC (less often PGL and rarely HNPGL), and retinal and central nervous system hemangioblastomas (or the presence of pancreatic or renal cysts) should prompt genetic testing for VHL mutations. ('nervous system hemangioblastomas', 'Phenotype', 'HP:0006880', (78, 110)) ('PC', 'Phenotype', 'HP:0002666', (16, 18)) ('pancreatic or renal cysts', 'Disease', 'MESH:D010181', (131, 156)) ('HNPGL', 'Phenotype', 'HP:0002864', (46, 51)) ('renal cysts', 'Phenotype', 'HP:0000107', (145, 156)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (93, 109)) ('VHL', 'Gene', (192, 195)) ('pancreatic or renal cysts', 'Disease', (131, 156)) ('PGL', 'Phenotype', 'HP:0002668', (31, 34)) ('PGL', 'Phenotype', 'HP:0002668', (48, 51)) ('retinal and central nervous system hemangioblastomas', 'Disease', 'MESH:D018325', (58, 110)) ('RCC', 'Phenotype', 'HP:0005584', (11, 14)) ('VHL', 'Gene', '7428', (192, 195)) ('central nervous system hemangioblastoma', 'Phenotype', 'HP:0006880', (70, 109)) ('RCC', 'Disease', 'MESH:C538614', (11, 14)) ('RCC', 'Disease', (11, 14)) ('mutations', 'Var', (196, 205)) 31128 28973655 The occurrence of HNPGL, abdominal PGL, and malignant PPGL or the co-occurrence of wild-type gastrointestinal stromal tumors suggests a possible SDHx mutation. ('SDHx', 'Gene', (145, 149)) ('HNPGL', 'Phenotype', 'HP:0002864', (18, 23)) ('gastrointestinal stromal tumors', 'Disease', (93, 124)) ('mutation', 'Var', (150, 158)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('abdominal PGL', 'Disease', (25, 38)) ('PGL', 'Phenotype', 'HP:0002668', (20, 23)) ('PGL', 'Phenotype', 'HP:0002668', (35, 38)) ('PGL', 'Phenotype', 'HP:0002668', (55, 58)) ('tumors', 'Phenotype', 'HP:0002664', (118, 124)) ('HNPGL', 'Disease', (18, 23)) ('malignant PPGL', 'Disease', (44, 58)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (93, 124)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (93, 124)) ('SDHx', 'Chemical', '-', (145, 149)) 31135 28973655 For example, VHL mutations are almost invariably associated with clear-cell RCC, and a unique morphology consisting of solid architecture, distinctive intracytoplasmic inclusions, and intratumor mast cells is characteristic of SDHB-deficient RCC (Fig. ('tumor', 'Disease', (189, 194)) ('RCC', 'Disease', 'MESH:C538614', (76, 79)) ('RCC', 'Disease', (76, 79)) ('RCC', 'Phenotype', 'HP:0005584', (76, 79)) ('RCC', 'Disease', 'MESH:C538614', (242, 245)) ('RCC', 'Disease', (242, 245)) ('RCC', 'Phenotype', 'HP:0005584', (242, 245)) ('associated', 'Reg', (49, 59)) ('VHL', 'Gene', (13, 16)) ('tumor', 'Disease', 'MESH:D009369', (189, 194)) ('VHL', 'Gene', '7428', (13, 16)) ('SDHB-deficient RCC', 'Disease', 'MESH:C538614', (227, 245)) ('SDHB-deficient RCC', 'Disease', (227, 245)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) ('mutations', 'Var', (17, 26)) 31139 28973655 Sequencing of both the PC and RCC tumors in case 2 revealed a somatic mutation in VHL (c.245G>T p Arg82Leu) in the PC but not the RCC, with no evidence of mutation in SDHA/SDHB/SDHC/SDHD genes. ('RCC', 'Disease', 'MESH:C538614', (30, 33)) ('Arg82Leu', 'SUBSTITUTION', 'None', (98, 106)) ('SDHA', 'Chemical', '-', (167, 171)) ('SDHC', 'Gene', '6391', (177, 181)) ('PC', 'Phenotype', 'HP:0002666', (23, 25)) ('RCC', 'Disease', (130, 133)) ('RCC', 'Phenotype', 'HP:0005584', (130, 133)) ('SDHD', 'Gene', '6392', (182, 186)) ('tumors', 'Phenotype', 'HP:0002664', (34, 40)) ('RCC tumors', 'Disease', (30, 40)) ('VHL', 'Gene', (82, 85)) ('RCC', 'Disease', 'MESH:C538614', (130, 133)) ('SDHC', 'Gene', (177, 181)) ('SDHD', 'Gene', (182, 186)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('RCC tumors', 'Disease', 'MESH:C538614', (30, 40)) ('PC', 'Phenotype', 'HP:0002666', (115, 117)) ('c.245G>T', 'Mutation', 'rs890210469', (87, 95)) ('RCC', 'Disease', (30, 33)) ('RCC', 'Phenotype', 'HP:0005584', (30, 33)) ('VHL', 'Gene', '7428', (82, 85)) ('Arg82Leu', 'Var', (98, 106)) 31140 28973655 False-positive results using SDHB immunohistochemistry (as apparently occurred in this case) have been reported for patients with germline VHL mutations (Fig. ('VHL', 'Gene', (139, 142)) ('patients', 'Species', '9606', (116, 124)) ('VHL', 'Gene', '7428', (139, 142)) ('SDHB', 'Gene', (29, 33)) ('mutations', 'Var', (143, 152)) 31141 28973655 A potential alternative explanation for the discrepant SDHB immunohistochemistry results in case 2 is that the first hit is an undetected germline VHL mutation (e.g., intronic mutation, copy number alteration) and that the somatic VHL missense mutation in the PCC was the "second hit." ('intronic mutation', 'Var', (167, 184)) ('VHL', 'Gene', (231, 234)) ('copy number alteration', 'Var', (186, 208)) ('VHL', 'Gene', '7428', (231, 234)) ('mutation', 'Var', (151, 159)) ('PC', 'Phenotype', 'HP:0002666', (260, 262)) ('VHL', 'Gene', (147, 150)) ('missense mutation', 'Var', (235, 252)) ('VHL', 'Gene', '7428', (147, 150)) 31144 28973655 Nevertheless, it is important to consider that VHL mutations can lead to false-positive results on SDHB immunohistochemistry; therefore, we recommend that those patients with RAPTAS, without a detectable germline mutation in SDHx, but with loss of SDHB immunoexpression on tumor studies, undergo genetic screening for VHL mutations (Fig. ('SDHx', 'Chemical', '-', (225, 229)) ('RAPTAS', 'Disease', (175, 181)) ('tumor', 'Disease', 'MESH:D009369', (273, 278)) ('mutations', 'Var', (322, 331)) ('VHL', 'Gene', (318, 321)) ('VHL', 'Gene', (47, 50)) ('VHL', 'Gene', '7428', (318, 321)) ('patients', 'Species', '9606', (161, 169)) ('tumor', 'Phenotype', 'HP:0002664', (273, 278)) ('tumor', 'Disease', (273, 278)) ('VHL', 'Gene', '7428', (47, 50)) ('SDHx', 'Gene', (225, 229)) 31147 28973655 SDHx and FH inactivation leads to the accumulation of oncometabolites such as succinate and fumarate that inhibit alpha ketoglutarate dependant dioxygenase enzymes, promoting stabilization of hypoxia inducible factor complex and inhibiting histone and DNA demethylation enzymes, resulting in DNA hypermethylation. ('fumarate', 'Chemical', 'MESH:D005650', (92, 100)) ('inhibiting', 'NegReg', (229, 239)) ('hypoxia', 'Disease', 'MESH:D000860', (192, 199)) ('accumulation', 'PosReg', (38, 50)) ('stabilization', 'MPA', (175, 188)) ('hypoxia', 'Disease', (192, 199)) ('succinate', 'Chemical', 'MESH:D019802', (78, 87)) ('alpha ketoglutarate dependant dioxygenase enzymes', 'Enzyme', (114, 163)) ('inhibit', 'NegReg', (106, 113)) ('SDHx', 'Chemical', '-', (0, 4)) ('SDHx', 'Gene', (0, 4)) ('DNA hypermethylation', 'MPA', (292, 312)) ('inactivation', 'Var', (12, 24)) ('FH', 'Disease', 'MESH:D006938', (9, 11)) ('promoting', 'PosReg', (165, 174)) 31148 28973655 Cluster two gene mutations (RET, NF1, TMEM127, MAX) activate the MAPK and phosphatidylinositol 3-kinase-AKT-mTOR pathways. ('activate', 'PosReg', (52, 60)) ('TMEM127', 'Chemical', '-', (38, 45)) ('RET', 'Gene', (28, 31)) ('phosphatidylinositol', 'Chemical', 'MESH:D010716', (74, 94)) ('mutations', 'Var', (17, 26)) 31160 25371412 Genetic evidence of a precisely tuned dysregulation in the hypoxia signaling pathway during oncogenesis The classic model of tumor suppression implies that malignant transformation requires full 'two-hit' inactivation of a tumor suppressor gene. ('tumor', 'Disease', 'MESH:D009369', (125, 130)) ('tumor suppressor', 'Gene', '7248', (223, 239)) ('tumor', 'Disease', (223, 228)) ('tumor', 'Phenotype', 'HP:0002664', (223, 228)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('tumor', 'Disease', (125, 130)) ('dysregulation', 'Var', (38, 51)) ('hypoxia', 'Disease', (59, 66)) ('hypoxia', 'Disease', 'MESH:D000860', (59, 66)) ('tumor', 'Disease', 'MESH:D009369', (223, 228)) ('tumor suppressor', 'Gene', (223, 239)) 31162 25371412 Mutations in the tumor suppressor gene VHL are associated with a complex spectrum of conditions. ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) ('VHL', 'Gene', (39, 42)) ('tumor suppressor', 'Gene', (17, 33)) ('Mutations', 'Var', (0, 9)) ('associated', 'Reg', (47, 57)) ('tumor suppressor', 'Gene', '7248', (17, 33)) 31163 25371412 Homozygotes or compound heterozygotes for the R200W germline mutation in VHL have Chuvash polycythemia, whereas heterozygous carriers are free of disease. ('R200W', 'Mutation', 'rs28940298', (46, 51)) ('VHL', 'Gene', (73, 76)) ('polycythemia', 'Phenotype', 'HP:0001901', (90, 102)) ('free of disease', 'Disease', 'MESH:D015673', (138, 153)) ('Chuvash polycythemia', 'Disease', (82, 102)) ('R200W', 'Var', (46, 51)) ('Chuvash polycythemia', 'Disease', 'MESH:C563918', (82, 102)) ('free of disease', 'Disease', (138, 153)) 31164 25371412 Individuals with classic, heterozygous VHL mutations have von Hippel-Lindau disease and are at high risk of multiple tumors (e.g. ('von Hippel-Lindau disease', 'Disease', (58, 83)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (58, 83)) ('tumors', 'Phenotype', 'HP:0002664', (117, 123)) ('multiple tumors', 'Disease', 'MESH:D009369', (108, 123)) ('VHL', 'Gene', (39, 42)) ('multiple tumors', 'Disease', (108, 123)) ('mutations', 'Var', (43, 52)) 31166 25371412 We report here an atypical family bearing two VHL gene mutations in cis (R200W and R161Q), together with phenotypic analysis, structural modeling, functional and transcriptomic studies of these mutants in comparison to classical mutants involved in the different VHL phenotypes. ('R200W', 'Mutation', 'rs28940298', (73, 78)) ('mutations', 'Var', (55, 64)) ('R161Q', 'Mutation', 'rs730882035', (83, 88)) ('VHL gene', 'Gene', (46, 54)) ('R161Q', 'Var', (83, 88)) 31168 25371412 Thus, by studying naturally occurring familial mutations, our work validates in humans the "continuum" model of tumor suppression. ('tumor', 'Disease', 'MESH:D009369', (112, 117)) ('mutations', 'Var', (47, 56)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('tumor', 'Disease', (112, 117)) ('humans', 'Species', '9606', (80, 86)) 31169 25371412 Over the past 30 years, the genetics of inherited cancer syndromes associated with germline mutations in tumor suppressor genes (TSG) have been dominated by Knudson's "two-hit" model. ('TSG', 'Gene', '57045', (129, 132)) ('tumor suppressor', 'Gene', (105, 121)) ('inherited cancer syndromes', 'Disease', 'MESH:D009386', (40, 66)) ('inherited cancer syndromes', 'Disease', (40, 66)) ('tumor suppressor', 'Gene', '7248', (105, 121)) ('TSG', 'Gene', (129, 132)) ('associated', 'Reg', (67, 77)) ('germline mutations', 'Var', (83, 101)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('cancer', 'Phenotype', 'HP:0002664', (50, 56)) 31171 25371412 The first genetic event is inherited and, in a second step, the loss of the wild type allele is acquired and induces further steps of oncogenesis, with somatic events and emergence of cancer. ('cancer', 'Disease', (184, 190)) ('somatic events', 'CPA', (152, 166)) ('oncogenesis', 'CPA', (134, 145)) ('cancer', 'Phenotype', 'HP:0002664', (184, 190)) ('loss', 'Var', (64, 68)) ('cancer', 'Disease', 'MESH:D009369', (184, 190)) ('induces', 'Reg', (109, 116)) 31175 25371412 One puzzling case of inherited cancer syndrome is the von Hippel-Lindau (VHL) disease associated with VHL mutations. ('cancer', 'Phenotype', 'HP:0002664', (31, 37)) ('associated', 'Reg', (86, 96)) ('VHL', 'Gene', (102, 105)) ('inherited cancer syndrome', 'Disease', (21, 46)) ('mutations', 'Var', (106, 115)) ('inherited cancer syndrome', 'Disease', 'MESH:D009386', (21, 46)) ('von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (54, 85)) 31177 25371412 Depending on the mutation, patients are predisposed to multiple tumors, including renal cancers (that have lost the wild type allele), and/or pheochromocytomas (that do not always lose the second allele), and in cases with particular mutations, patients are free of cancer. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (142, 158)) ('tumors', 'Phenotype', 'HP:0002664', (64, 70)) ('cancer', 'Disease', (88, 94)) ('patients', 'Species', '9606', (245, 253)) ('multiple tumors', 'Disease', 'MESH:D009369', (55, 70)) ('pheochromocytomas', 'Disease', (142, 159)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (142, 159)) ('predisposed', 'Reg', (40, 51)) ('renal cancers', 'Disease', (82, 95)) ('cancer', 'Phenotype', 'HP:0002664', (88, 94)) ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) ('and/or', 'Disease', (135, 141)) ('cancer', 'Disease', 'MESH:D009369', (266, 272)) ('cancers', 'Phenotype', 'HP:0002664', (88, 95)) ('mutation', 'Var', (17, 25)) ('patients', 'Species', '9606', (27, 35)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (142, 159)) ('cancer', 'Disease', 'MESH:D009369', (88, 94)) ('renal cancer', 'Phenotype', 'HP:0009726', (82, 94)) ('multiple tumors', 'Disease', (55, 70)) ('renal cancers', 'Disease', 'MESH:D007680', (82, 95)) ('mutations', 'Var', (234, 243)) ('cancer', 'Disease', (266, 272)) ('cancer', 'Phenotype', 'HP:0002664', (266, 272)) 31184 25371412 Heterozygous mutations predispose to VHL disease, the leading cause of hereditary kidney cancer. ('hereditary kidney cancer', 'Disease', (71, 95)) ('hereditary kidney cancer', 'Disease', 'MESH:D007680', (71, 95)) ('VHL disease', 'Disease', 'MESH:D006623', (37, 48)) ('kidney cancer', 'Phenotype', 'HP:0009726', (82, 95)) ('Heterozygous mutations', 'Var', (0, 22)) ('VHL disease', 'Disease', (37, 48)) ('predispose', 'Reg', (23, 33)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) 31188 25371412 VHL Type-2 disease is associated with VHL missense mutations that lead to severe (Types-2A and 2B) or weaker (Type-2C) alterations in pVHL function. ('VHL Type-2 disease', 'Disease', 'MESH:D006623', (0, 18)) ('alterations', 'MPA', (119, 130)) ('missense mutations', 'Var', (42, 60)) ('VHL', 'Gene', (38, 41)) ('pVHL', 'Gene', '7428', (134, 138)) ('VHL Type-2 disease', 'Disease', (0, 18)) ('pVHL', 'Gene', (134, 138)) 31189 25371412 In contrast, VHL Type-1 disease is associated with mutations that strongly impair the structure of pVHL or result in the complete absence of the protein (truncated proteins or total gene deletion). ('the protein', 'Protein', (141, 152)) ('absence', 'NegReg', (130, 137)) ('pVHL', 'Gene', (99, 103)) ('mutations', 'Var', (51, 60)) ('protein', 'Protein', (145, 152)) ('structure', 'MPA', (86, 95)) ('VHL Type-1 disease', 'Disease', (13, 31)) ('VHL Type-1 disease', 'Disease', 'MESH:D006623', (13, 31)) ('pVHL', 'Gene', '7428', (99, 103)) ('impair', 'NegReg', (75, 81)) 31190 25371412 The analysis of cases with gene deletions demonstrated that VHL-loss alone is sufficient to predispose to ccRCC development, and that the loss of a larger region (encompassing the HSPCC300 gene) would have a protective role. ('deletions', 'Var', (32, 41)) ('HSPCC300', 'Gene', (180, 188)) ('VHL-loss', 'Disease', 'MESH:D006623', (60, 68)) ('ccRCC development', 'Disease', (106, 123)) ('predispose', 'Reg', (92, 102)) ('VHL-loss', 'Disease', (60, 68)) ('R', 'Chemical', 'MESH:D001120', (108, 109)) 31191 25371412 Whereas germline mutations in the VHL gene commonly predispose patients to the development of multiple tumors, a third category of phenotype has been described in Russian patients from the Chuvash region. ('germline mutations', 'Var', (8, 26)) ('predispose', 'Reg', (52, 62)) ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('tumors', 'Phenotype', 'HP:0002664', (103, 109)) ('multiple tumors', 'Disease', 'MESH:D009369', (94, 109)) ('patients', 'Species', '9606', (171, 179)) ('multiple tumors', 'Disease', (94, 109)) ('VHL', 'Gene', (34, 37)) ('patients', 'Species', '9606', (63, 71)) ('R', 'Chemical', 'MESH:D001120', (163, 164)) 31193 25371412 Survival in the Chuvash patients was found to be reduced compared to control groups due to higher rates of arterial and venous thromboses, and to haemorrhagic events. ('reduced', 'NegReg', (49, 56)) ('Survival', 'CPA', (0, 8)) ('venous thromboses', 'Disease', 'MESH:D020246', (120, 137)) ('venous thromboses', 'Disease', (120, 137)) ('venous thromboses', 'Phenotype', 'HP:0004936', (120, 137)) ('patients', 'Species', '9606', (24, 32)) ('Chuvash', 'Var', (16, 23)) 31194 25371412 This specific VHL-R200W mutation has also been identified in combination with other VHL mutations (compound heterozygosity) (Supplementary Table S1) and, since then, other missenses VHL mutations have been described (always different from the VHL mutation involved in severe von Hippel-Lindau disease) (Table S2). ('von Hippel-Lindau disease', 'Disease', (275, 300)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (275, 300)) ('VHL', 'Gene', (182, 185)) ('missenses', 'Var', (172, 181)) ('VHL-R200W', 'Gene', (14, 23)) ('R200W', 'Mutation', 'rs28940298', (18, 23)) 31198 25371412 The absence of tumor development in patients carrying the R200W mutation raised the possibility of the presence of a protective element within this core haplotype. ('tumor', 'Disease', 'MESH:D009369', (15, 20)) ('patients', 'Species', '9606', (36, 44)) ('R200W', 'Var', (58, 63)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('tumor', 'Disease', (15, 20)) ('absence', 'NegReg', (4, 11)) ('R200W', 'Mutation', 'rs28940298', (58, 63)) 31200 25371412 In order to better understand the absence of tumors in the heterozygous carriers of the VHL-R200W mutation and to determine the cause of cancer development in this family (loss of a protective event or presence an additional event), we have carried out an in-depth study of family members and compared our findings to what is observed with classic VHL mutations. ('absence of tumors', 'Disease', (34, 51)) ('cancer', 'Phenotype', 'HP:0002664', (137, 143)) ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('mutation', 'Var', (98, 106)) ('VHL-R200W', 'Gene', (88, 97)) ('tumors', 'Phenotype', 'HP:0002664', (45, 51)) ('R200W', 'Mutation', 'rs28940298', (92, 97)) ('cancer', 'Disease', 'MESH:D009369', (137, 143)) ('absence of tumors', 'Disease', 'MESH:D004832', (34, 51)) ('cancer', 'Disease', (137, 143)) 31218 25371412 Gene expression was quantified using TaqMan quantitative RT-PCR (Life Technologies) on the 786.O clones expressing the different VHL mutants used in the microarray study and on two additional independent clones. ('mutants', 'Var', (133, 140)) ('R', 'Chemical', 'MESH:D001120', (62, 63)) ('VHL', 'Gene', (129, 132)) ('R', 'Chemical', 'MESH:D001120', (57, 58)) 31222 25371412 1A) was originally identified as a heterozygous carrier of a single c.598C>T, p.Arg200Trp (R200W) mutation in the VHL gene. ('p.Arg200Trp (R200W', 'Var', (78, 96)) ('R200W', 'Mutation', 'rs28940298', (91, 96)) ('p.Arg200Trp', 'Mutation', 'rs28940298', (78, 89)) ('c.598C>T', 'Mutation', 'rs28940298', (68, 76)) ('VHL', 'Gene', (114, 117)) 31229 25371412 To determine if the VHL disease occurred in the genetic context of the particular Chuvash core haplotype, we analyzed the single nucleotide polymorphisms (SNP) of the VHL region (Table 1). ('single nucleotide polymorphisms', 'Var', (122, 153)) ('VHL disease', 'Disease', 'MESH:D006623', (20, 31)) ('VHL disease', 'Disease', (20, 31)) 31231 25371412 Remarkably, we found a second heterozygous germline mutation, c.482G>A, p.Arg161Gln (R161Q) (Fig. ('R161Q', 'Mutation', 'rs730882035', (85, 90)) ('c.482G>A', 'Mutation', 'rs730882035', (62, 70)) ('R', 'Chemical', 'MESH:D001120', (85, 86)) ('p.Arg161Gln', 'Mutation', 'rs730882035', (72, 83)) ('R', 'Chemical', 'MESH:D001120', (0, 1)) ('p.Arg161Gln (R161Q', 'Var', (72, 90)) ('c.482G>A', 'Var', (62, 70)) 31232 25371412 The impact of the single mutations (R200W and R161Q), and the double mutation (R200W+R161Q), on the structure and dynamic behavior of pVHL was studied by molecular dynamics (MD) simulations. ('R161Q', 'Mutation', 'rs730882035', (46, 51)) ('R200W', 'Var', (36, 41)) ('R161Q', 'Mutation', 'rs730882035', (85, 90)) ('R200W+R161Q', 'Var', (79, 90)) ('R200W', 'Mutation', 'rs28940298', (36, 41)) ('R200W', 'Mutation', 'rs28940298', (79, 84)) ('pVHL', 'Gene', '7428', (134, 138)) ('R161Q', 'Var', (46, 51)) ('pVHL', 'Gene', (134, 138)) 31236 25371412 Analysis of non-covalent contacts indicates that each mutation, R200 and R161, taken separately decreases the stabilizing inter-domains interactions, while these interactions are increased in the double mutant R200W+R161Q (Fig. ('R200W', 'Mutation', 'rs28940298', (210, 215)) ('stabilizing inter-domains interactions', 'MPA', (110, 148)) ('R', 'Chemical', 'MESH:D001120', (73, 74)) ('decreases', 'NegReg', (96, 105)) ('R200W+R161Q', 'Var', (210, 221)) ('R161Q', 'Mutation', 'rs730882035', (216, 221)) ('R161', 'Var', (73, 77)) ('R', 'Chemical', 'MESH:D001120', (64, 65)) ('R200', 'Var', (64, 68)) ('R', 'Chemical', 'MESH:D001120', (210, 211)) ('R', 'Chemical', 'MESH:D001120', (216, 217)) ('increased', 'PosReg', (179, 188)) 31240 25371412 To evaluate the impact of these different mutations on HIF regulation, we performed a functional in vitro analysis by measuring the ability of the mutants to bind to a proline-hydroxylated HIF-1alpha peptide (HIF-OH). ('HIF-1alpha', 'Gene', (189, 199)) ('proline', 'Chemical', 'MESH:D011392', (168, 175)) ('mutants', 'Var', (147, 154)) ('HIF-1alpha', 'Gene', '3091', (189, 199)) ('bind', 'Interaction', (158, 162)) ('HIF-OH', 'Disease', (209, 215)) ('HIF-OH', 'Disease', 'MESH:C566945', (209, 215)) 31241 25371412 The R200W mutation had no effect on the ability of pVHL to bind to HIF-OH compared to the wild type protein (Fig. ('pVHL', 'Gene', '7428', (51, 55)) ('pVHL', 'Gene', (51, 55)) ('R200W', 'Var', (4, 9)) ('HIF-OH', 'Disease', (67, 73)) ('R200W', 'Mutation', 'rs28940298', (4, 9)) ('HIF-OH', 'Disease', 'MESH:C566945', (67, 73)) ('bind', 'Interaction', (59, 63)) 31242 25371412 In contrast, R161Q moderately affected this binding and R200W+R161Q completely prevented it. ('R161Q', 'Mutation', 'rs730882035', (13, 18)) ('affected', 'Reg', (30, 38)) ('prevented', 'NegReg', (79, 88)) ('R161Q', 'Var', (13, 18)) ('R200W+R161Q', 'Var', (56, 67)) ('R161Q', 'Mutation', 'rs730882035', (62, 67)) ('binding', 'Interaction', (44, 51)) ('R200W', 'Mutation', 'rs28940298', (56, 61)) 31244 25371412 Each VHL mutant construct harboring missense mutation was then reintroduced into the VHL-defective renal cancer cell line 786.O, which over-expresses HIF-2alpha. ('VHL-defective renal cancer', 'Disease', 'MESH:D007680', (85, 111)) ('renal cancer', 'Phenotype', 'HP:0009726', (99, 111)) ('HIF-2alpha', 'Gene', (150, 160)) ('cancer', 'Phenotype', 'HP:0002664', (105, 111)) ('missense mutation', 'Var', (36, 53)) ('over-expresses', 'PosReg', (135, 149)) ('VHL-defective renal cancer', 'Disease', (85, 111)) ('HIF-2alpha', 'Gene', '2034', (150, 160)) 31245 25371412 Many attempts were unsuccessful to reintroduce classical VHL constructions in the cells, stably or transiently, toxicity and non reproducible results being observed, especially for the wild type and the VHL-R200W vectors. ('VHL-R200W', 'Var', (203, 212)) ('R200W', 'Mutation', 'rs28940298', (207, 212)) ('toxicity', 'Disease', 'MESH:D064420', (112, 120)) ('toxicity', 'Disease', (112, 120)) 31248 25371412 Immunoblotting of clones expressing the wild-type or various mutated pVHL showed that the HIF-2alpha protein was differentially stabilized by the different mutants in the same order of severity (Fig. ('pVHL', 'Gene', '7428', (69, 73)) ('HIF-2alpha', 'Gene', (90, 100)) ('pVHL', 'Gene', (69, 73)) ('HIF-2alpha', 'Gene', '2034', (90, 100)) ('mutants', 'Var', (156, 163)) ('mutated', 'Var', (61, 68)) ('stabilized', 'MPA', (128, 138)) 31251 25371412 To pursue this further, transcriptomic profiles from cells expressing the main representative mutants of each type of VHL disease (C162F [Type-1], R167Q [Type-2B], Y98H [Type-2A], L188V [Type-2C]) were obtained by microarray analysis. ('Y98H', 'Var', (164, 168)) ('C162F', 'Var', (131, 136)) ('L188V', 'Mutation', 'rs5030824', (180, 185)) ('VHL disease', 'Disease', (118, 129)) ('VHL disease', 'Disease', 'MESH:D006623', (118, 129)) ('L188V', 'Var', (180, 185)) ('Y98H', 'Mutation', 'rs5030809', (164, 168)) ('R167Q', 'Mutation', 'rs5030821', (147, 152)) ('C162F', 'Mutation', 'rs397516444', (131, 136)) ('R167Q [', 'Var', (147, 154)) 31257 25371412 We tested the expression level of 10 genes randomly selected from this set in different 786.0 clones in which VHL mutants had been reintroduced (R200W and R161Q mutations, individually or in association, in which three independent clones with equivalent expression of VHL were obtained) (Fig. ('R161Q mutations', 'Var', (155, 170)) ('R200W', 'Mutation', 'rs28940298', (145, 150)) ('mutants', 'Var', (114, 121)) ('R161Q', 'Mutation', 'rs730882035', (155, 160)) ('R200W', 'Var', (145, 150)) ('VHL', 'Gene', (110, 113)) 31262 25371412 The expression profiles of our 30 candidate genes were studied in VHL mutated ccRCC compared to normal kidney tissues. ('ccRCC', 'Disease', (78, 83)) ('mutated', 'Var', (70, 77)) ('R', 'Chemical', 'MESH:D001120', (80, 81)) 31264 25371412 We show that the R200W mutation alone is definitely not associated with the disease because the family actually carries another pathogenic mutation, R161Q, on the same VHL allele, and the double mutated allele segregates with disease. ('R161Q', 'Var', (149, 154)) ('R200W', 'Var', (17, 22)) ('R200W', 'Mutation', 'rs28940298', (17, 22)) ('disease', 'Disease', (226, 233)) ('R161Q', 'Mutation', 'rs730882035', (149, 154)) 31266 25371412 We can thus conclude that this haplotype does not contain any protective elements against cancer development and that the VHL mutations are, by themselves, predominantly responsible for manifestations of the VHL disease. ('VHL disease', 'Disease', 'MESH:D006623', (208, 219)) ('responsible', 'Reg', (170, 181)) ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('VHL', 'Gene', (122, 125)) ('VHL disease', 'Disease', (208, 219)) ('mutations', 'Var', (126, 135)) ('cancer', 'Disease', (90, 96)) ('cancer', 'Disease', 'MESH:D009369', (90, 96)) 31267 25371412 The family under study is VHL Type-2B (pheochromocytoma and high risk of kidney cancer), and the disease is caused by the combination of two germline mutations which, when considered separately, are associated with different phenotypes: R200W (either no symptoms or erythrocytosis) and R161Q (VHL Type-2A, pheochromocytomas and low risk of kidney cancer). ('pheochromocytomas', 'Phenotype', 'HP:0002666', (306, 323)) ('caused by', 'Reg', (108, 117)) ('VHL Type-2B', 'Disease', (26, 37)) ('kidney cancer', 'Disease', 'MESH:D007680', (73, 86)) ('pheochromocytoma', 'Disease', (39, 55)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (266, 280)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (39, 55)) ('R161Q', 'Var', (286, 291)) ('erythrocytosis', 'Disease', (266, 280)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (306, 322)) ('cancer', 'Phenotype', 'HP:0002664', (80, 86)) ('kidney cancer', 'Phenotype', 'HP:0009726', (73, 86)) ('VHL Type-2', 'Disease', (293, 303)) ('kidney cancer', 'Disease', (73, 86)) ('VHL Type-2', 'Disease', 'MESH:D006623', (26, 36)) ('kidney cancer', 'Disease', 'MESH:D007680', (340, 353)) ('pheochromocytoma', 'Disease', (306, 322)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (306, 322)) ('VHL Type-2B', 'Disease', 'MESH:D006623', (26, 37)) ('cancer', 'Phenotype', 'HP:0002664', (347, 353)) ('pheochromocytomas', 'Disease', (306, 323)) ('R161Q', 'Mutation', 'rs730882035', (286, 291)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (306, 323)) ('kidney cancer', 'Phenotype', 'HP:0009726', (340, 353)) ('R200W', 'Mutation', 'rs28940298', (237, 242)) ('VHL Type-2', 'Disease', 'MESH:D006623', (293, 303)) ('R200W', 'Var', (237, 242)) ('kidney cancer', 'Disease', (340, 353)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (39, 55)) ('erythrocytosis', 'Disease', 'MESH:D011086', (266, 280)) 31268 25371412 Although it is not excluded that this family carry other genetic alterations (linked or not to VHL), we conducted a comprehensive functional and comparative analysis of these VHL mutations in order to clarify the complexity of genotype/phenotype correlations, and to understand the basis of either tumor development in patients with VHL disease or absence of cancer in carriers of the VHL-R200W mutation. ('R200W', 'Mutation', 'rs28940298', (389, 394)) ('absence of cancer', 'Disease', (348, 365)) ('tumor', 'Disease', (298, 303)) ('VHL-R200W', 'Gene', (385, 394)) ('VHL disease', 'Disease', 'MESH:D006623', (333, 344)) ('cancer', 'Phenotype', 'HP:0002664', (359, 365)) ('absence of cancer', 'Disease', 'MESH:D004832', (348, 365)) ('patients', 'Species', '9606', (319, 327)) ('VHL', 'Gene', (175, 178)) ('tumor', 'Disease', 'MESH:D009369', (298, 303)) ('mutations', 'Var', (179, 188)) ('VHL disease', 'Disease', (333, 344)) ('tumor', 'Phenotype', 'HP:0002664', (298, 303)) 31269 25371412 The molecular dynamics simulations of the pVHL mutants revealed a highly constrained and reduced inter-domain mobility of the double mutant compared to the single one. ('inter-domain mobility', 'MPA', (97, 118)) ('pVHL', 'Gene', '7428', (42, 46)) ('pVHL', 'Gene', (42, 46)) ('double mutant', 'Var', (126, 139)) ('reduced', 'NegReg', (89, 96)) ('mutants', 'Var', (47, 54)) 31270 25371412 The results show a gradient in the loss of function of the different mutants with an additive effect of the double mutant: R200W+R161Q > R161Q > R200W >=wt. ('R200W', 'Mutation', 'rs28940298', (145, 150)) ('R200W+R161Q > R161Q > R200W >', 'Var', (123, 152)) ('loss', 'NegReg', (35, 39)) ('R161Q', 'Mutation', 'rs730882035', (137, 142)) ('R200W', 'Mutation', 'rs28940298', (123, 128)) ('R161Q', 'Mutation', 'rs730882035', (129, 134)) 31273 25371412 We did not identify any relevant candidate genes differentially regulated by the different mutants that may explain the occurrence of tumors or not. ('tumors', 'Phenotype', 'HP:0002664', (134, 140)) ('tumors', 'Disease', (134, 140)) ('tumors', 'Disease', 'MESH:D009369', (134, 140)) ('mutants', 'Var', (91, 98)) ('tumor', 'Phenotype', 'HP:0002664', (134, 139)) 31275 25371412 We identified a set of genes directly regulated by the pVHL/HIF-2alpha pathway, and observed a distinct and graded ability of the different VHL mutants to regulate these genes: the more important the pVHL loss of function is, the more dysregulated the HIF-2alpha target genes are. ('mutants', 'Var', (144, 151)) ('pVHL', 'Gene', '7428', (55, 59)) ('pVHL', 'Gene', (55, 59)) ('VHL loss', 'Disease', 'MESH:D006623', (201, 209)) ('pVHL', 'Gene', '7428', (200, 204)) ('HIF-2alpha', 'Gene', (252, 262)) ('pVHL', 'Gene', (200, 204)) ('VHL loss', 'Disease', (201, 209)) ('VHL', 'Gene', (140, 143)) ('HIF-2alpha', 'Gene', (60, 70)) ('HIF-2alpha', 'Gene', '2034', (252, 262)) ('HIF-2alpha', 'Gene', '2034', (60, 70)) ('dysregulated', 'MPA', (235, 247)) 31281 25371412 Altogether, our results show a gradual loss of function of the different VHL mutants that could explain the different associated phenotypes: (i) no tumor for R200W mutant with a function similar close to wild-type pVHL, (ii) an intermediate dysfunction leading to low risk of developing ccRCC for the R161Q mutant, (iii) and VHL Type-2B disease with high risk of ccRCC, as described in the present family where R200W+R161Q is associated with a severe loss of function. ('R', 'Chemical', 'MESH:D001120', (365, 366)) ('R', 'Chemical', 'MESH:D001120', (301, 302)) ('ccRCC', 'Disease', (287, 292)) ('R', 'Chemical', 'MESH:D001120', (411, 412)) ('pVHL', 'Gene', '7428', (214, 218)) ('R', 'Chemical', 'MESH:D001120', (158, 159)) ('pVHL', 'Gene', (214, 218)) ('R200W+R161Q', 'Var', (411, 422)) ('R161Q', 'Mutation', 'rs730882035', (417, 422)) ('VHL Type-2B disease', 'Disease', 'MESH:D006623', (325, 344)) ('ccRCC', 'Disease', (363, 368)) ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('R161Q', 'Var', (301, 306)) ('R', 'Chemical', 'MESH:D001120', (417, 418)) ('R200W', 'Mutation', 'rs28940298', (411, 416)) ('R200W', 'Mutation', 'rs28940298', (158, 163)) ('R', 'Chemical', 'MESH:D001120', (289, 290)) ('R161Q', 'Mutation', 'rs730882035', (301, 306)) ('R200W', 'Var', (158, 163)) ('tumor', 'Disease', (148, 153)) ('mutants', 'Var', (77, 84)) ('VHL Type-2B disease', 'Disease', (325, 344)) ('tumor', 'Disease', 'MESH:D009369', (148, 153)) 31284 25371412 Our description of combined mutations in VHL, each proportionally impacting the patients phenotype, validates this model for the first time in humans and indicates that precisely-defined quantitative aspects of structural and functional dysregulation are key to tumor predisposition. ('tumor', 'Phenotype', 'HP:0002664', (262, 267)) ('patients', 'Species', '9606', (80, 88)) ('tumor', 'Disease', (262, 267)) ('impacting', 'Reg', (66, 75)) ('humans', 'Species', '9606', (143, 149)) ('VHL', 'Gene', (41, 44)) ('mutations', 'Var', (28, 37)) ('tumor', 'Disease', 'MESH:D009369', (262, 267)) 31286 25371412 (i) heterozygous carriers of germline VHL mutations with a weak effect (like R200W) never develop tumors (except for two isolated cases of CNS hemangioblastomas). ('CNS hemangioblastomas', 'Phenotype', 'HP:0006880', (139, 160)) ('tumors', 'Disease', (98, 104)) ('R200W', 'Var', (77, 82)) ('tumors', 'Phenotype', 'HP:0002664', (98, 104)) ('tumors', 'Disease', 'MESH:D009369', (98, 104)) ('develop', 'PosReg', (90, 97)) ('R200W', 'Mutation', 'rs28940298', (77, 82)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('CNS hemangioblastoma', 'Phenotype', 'HP:0006880', (139, 159)) ('hemangioblastomas', 'Disease', 'MESH:D018325', (143, 160)) ('VHL', 'Gene', (38, 41)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (143, 159)) ('hemangioblastomas', 'Disease', (143, 160)) 31288 25371412 In these patients, the exact mechanisms of the occurrence of erythrocytosis (achievement of a threshold that induces HIF and EPO production and/ or direct effect on erythroid progenitors proliferation due to particular properties of the VHL mutations) and occurrence of thrombotic events or PAH still need to be determined. ('patients', 'Species', '9606', (9, 17)) ('mutations', 'Var', (241, 250)) ('HIF', 'MPA', (117, 120)) ('EPO', 'Gene', (125, 128)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (61, 75)) ('VHL', 'Gene', (237, 240)) ('thrombotic events', 'Phenotype', 'HP:0001907', (270, 287)) ('erythrocytosis', 'Disease', (61, 75)) ('thrombotic events', 'Disease', 'MESH:D013927', (270, 287)) ('EPO', 'Gene', '2056', (125, 128)) ('erythrocytosis', 'Disease', 'MESH:D011086', (61, 75)) ('thrombotic events', 'Disease', (270, 287)) 31295 25371412 We can therefore conclude that, in pheochromocytoma, pVHL mutations function as hypomorphs, not as dominant negative alleles. ('mutations', 'Var', (58, 67)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (35, 51)) ('pVHL', 'Gene', '7428', (53, 57)) ('pVHL', 'Gene', (53, 57)) ('pheochromocytoma', 'Disease', (35, 51)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (35, 51)) 31297 25371412 A gradient of predisposition depending on the VHL mutation has already been suggested in ccRCC. ('VHL', 'Gene', (46, 49)) ('R', 'Chemical', 'MESH:D001120', (91, 92)) ('ccRCC', 'Disease', (89, 94)) ('mutation', 'Var', (50, 58)) 31298 25371412 The threshold of pVHL loss of activity could be reached with VHL Type-2A mutants (the typical Y98H mutation predispose to ccRCC in 3% of cases) and a maximal risk of ccRCC development occurs with Type-2B mutants (severe pVHL loss of function) and Type-1 mutations (total VHL loss of function). ('Y98H', 'Var', (94, 98)) ('VHL loss', 'Disease', 'MESH:D006623', (221, 229)) ('ccRCC', 'Disease', (166, 171)) ('pVHL', 'Gene', '7428', (220, 224)) ('pVHL', 'Gene', (220, 224)) ('VHL Type-2', 'Disease', (61, 71)) ('R', 'Chemical', 'MESH:D001120', (124, 125)) ('Y98H', 'Mutation', 'rs5030809', (94, 98)) ('VHL loss', 'Disease', (271, 279)) ('mutants', 'Var', (73, 80)) ('VHL loss', 'Disease', (18, 26)) ('pVHL', 'Gene', '7428', (17, 21)) ('VHL loss', 'Disease', 'MESH:D006623', (271, 279)) ('pVHL', 'Gene', (17, 21)) ('VHL loss', 'Disease', 'MESH:D006623', (18, 26)) ('ccRCC', 'Disease', (122, 127)) ('VHL Type-2', 'Disease', 'MESH:D006623', (61, 71)) ('VHL loss', 'Disease', (221, 229)) ('R', 'Chemical', 'MESH:D001120', (168, 169)) 31299 25371412 It is remarkable that VHL mutations in erythrocytosis patients are different to those identified in patients with VHL (Supplementary Table S2). ('VHL', 'Gene', (22, 25)) ('patients', 'Species', '9606', (54, 62)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (39, 53)) ('erythrocytosis', 'Disease', (39, 53)) ('mutations', 'Var', (26, 35)) ('patients', 'Species', '9606', (100, 108)) ('erythrocytosis', 'Disease', 'MESH:D011086', (39, 53)) 31300 25371412 There are a few exceptions: for example, Y175C and L188V have been associated with both erythrocytosis and pheochromocytoma. ('erythrocytosis and pheochromocytoma', 'Disease', 'MESH:D010673', (88, 123)) ('Y175C', 'Mutation', 'rs193922613', (41, 46)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (107, 123)) ('Y175C', 'Var', (41, 46)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (88, 102)) ('associated', 'Reg', (67, 77)) ('L188V', 'Var', (51, 56)) ('L188V', 'Mutation', 'rs5030824', (51, 56)) 31301 25371412 These mutations may be considered as "borderline", with a loss of function insufficient to induce renal cancer but still capable to cause pheochromocytoma. ('pheochromocytoma', 'Disease', (138, 154)) ('renal cancer', 'Disease', 'MESH:D007680', (98, 110)) ('renal cancer', 'Phenotype', 'HP:0009726', (98, 110)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (138, 154)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (138, 154)) ('cancer', 'Phenotype', 'HP:0002664', (104, 110)) ('loss of function insufficient', 'Disease', 'MESH:D000309', (58, 87)) ('cause', 'Reg', (132, 137)) ('loss of function insufficient', 'Disease', (58, 87)) ('mutations', 'Var', (6, 15)) ('renal cancer', 'Disease', (98, 110)) 31302 25371412 The L188V mutant illustrates perfectly this threshold: it is a typical VHL Type-2C mutation, its loss of function is difficult to assess and it has been described in rare patients with no symptoms or with erythrocytosis. ('VHL Type-2', 'Disease', 'MESH:D006623', (71, 81)) ('patients', 'Species', '9606', (171, 179)) ('L188V', 'Var', (4, 9)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (205, 219)) ('L188V', 'Mutation', 'rs5030824', (4, 9)) ('erythrocytosis', 'Disease', (205, 219)) ('erythrocytosis', 'Disease', 'MESH:D011086', (205, 219)) ('VHL Type-2', 'Disease', (71, 81)) 31303 25371412 Finally, our results suggest that the dysregulation of HIF may play a key role in the continuum model of tumor suppression by VHL. ('dysregulation', 'Var', (38, 51)) ('tumor', 'Disease', (105, 110)) ('tumor', 'Disease', 'MESH:D009369', (105, 110)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) 31304 25371412 This model may be of major importance in our understanding of tumor risk in patients carrying mutations in other genes belonging the HIF pathway. ('patients', 'Species', '9606', (76, 84)) ('tumor', 'Phenotype', 'HP:0002664', (62, 67)) ('mutations', 'Var', (94, 103)) ('tumor', 'Disease', (62, 67)) ('tumor', 'Disease', 'MESH:D009369', (62, 67)) 31305 25371412 Indeed, patients with germline mutations in PHD2/EGLN1 and HIF2A/EPAS1 can develop pheochromocytomas or paragangliomas (equivalent to extra-adrenal pheochromocytomas). ('HIF2A', 'Gene', '2034', (59, 64)) ('paragangliomas', 'Phenotype', 'HP:0002668', (104, 118)) ('HIF2A', 'Gene', (59, 64)) ('EGLN1', 'Gene', '54583', (49, 54)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (148, 164)) ('germline mutations', 'Var', (22, 40)) ('PHD2', 'Gene', (44, 48)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (140, 165)) ('EPAS1', 'Gene', (65, 70)) ('extra-adrenal pheochromocytomas', 'Disease', (134, 165)) ('EGLN1', 'Gene', (49, 54)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (83, 99)) ('PHD2', 'Gene', '54583', (44, 48)) ('develop', 'PosReg', (75, 82)) ('patients', 'Species', '9606', (8, 16)) ('extra-adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (134, 165)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (148, 165)) ('EPAS1', 'Gene', '2034', (65, 70)) ('pheochromocytomas or paragangliomas', 'Disease', (83, 118)) ('pheochromocytomas or paragangliomas', 'Disease', 'MESH:D010673', (83, 118)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (83, 100)) 31306 25371412 A comparative study of PHD2 mutations showed a differential regulation of HIF that perfectly fits with the model described here. ('PHD2', 'Gene', '54583', (23, 27)) ('fits', 'Disease', 'MESH:D012640', (93, 97)) ('PHD2', 'Gene', (23, 27)) ('HIF', 'MPA', (74, 77)) ('fits', 'Disease', (93, 97)) ('mutations', 'Var', (28, 37)) 31307 25371412 The absence of renal cancer in patients with PHD2 and HIF2A mutations could be explained by an only partial inactivation of PHD2 (possibly compensated by PHD1 and 3), and by the persistence of some HIF-2alpha degradation (the germline activating mutations described in HIF2A gene being always outside of the major hydroxylated prolines). ('absence of renal cancer', 'Disease', 'MESH:D007680', (4, 27)) ('HIF2A', 'Gene', (269, 274)) ('HIF2A', 'Gene', (54, 59)) ('PHD2', 'Gene', (45, 49)) ('PHD2', 'Gene', (124, 128)) ('absence of renal cancer', 'Disease', (4, 27)) ('HIF-2alpha degradation', 'Disease', 'MESH:D055959', (198, 220)) ('PHD2', 'Gene', '54583', (45, 49)) ('PHD2', 'Gene', '54583', (124, 128)) ('PHD1 and 3', 'Gene', '112398;112399', (154, 164)) ('cancer', 'Phenotype', 'HP:0002664', (21, 27)) ('inactivation', 'NegReg', (108, 120)) ('HIF2A', 'Gene', '2034', (269, 274)) ('prolines', 'Chemical', 'MESH:D011392', (327, 335)) ('patients', 'Species', '9606', (31, 39)) ('mutations', 'Var', (60, 69)) ('HIF-2alpha degradation', 'Disease', (198, 220)) ('HIF2A', 'Gene', '2034', (54, 59)) ('renal cancer', 'Phenotype', 'HP:0009726', (15, 27)) 31308 25371412 In conclusion, the unique concurrence of two mutations that interact positively to perturb a specific structural feature of pVHL has allowed functional - clinical correlates, improving as a result our understanding of the genotype-phenotype associations in VHL disease. ('mutations', 'Var', (45, 54)) ('VHL disease', 'Disease', (257, 268)) ('pVHL', 'Gene', '7428', (124, 128)) ('pVHL', 'Gene', (124, 128)) ('improving', 'PosReg', (175, 184)) ('VHL disease', 'Disease', 'MESH:D006623', (257, 268)) ('perturb', 'Reg', (83, 90)) 31330 28341846 Pre-operatively, subjects in the group with SH/LA had larger tumors but a lower incidence of comorbid diabetes mellitus than those in the group with normolactatemia. ('tumors', 'Disease', (61, 67)) ('tumors', 'Disease', 'MESH:D009369', (61, 67)) ('SH/LA', 'Var', (44, 49)) ('lactate', 'Chemical', 'MESH:D019344', (154, 161)) ('diabetes mellitus', 'Phenotype', 'HP:0000819', (102, 119)) ('diabetes mellitus', 'Disease', (102, 119)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('LA', 'Phenotype', 'HP:0003128', (47, 49)) ('tumors', 'Phenotype', 'HP:0002664', (61, 67)) ('diabetes mellitus', 'Disease', 'MESH:D003920', (102, 119)) 31332 28341846 The SH/LA group had a greater proportion of epinephrine-secreting tumors than the normolactatemia group (Table 1). ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('epinephrine', 'Chemical', 'MESH:D004837', (44, 55)) ('SH/LA', 'Var', (4, 9)) ('tumors', 'Disease', (66, 72)) ('tumors', 'Disease', 'MESH:D009369', (66, 72)) ('tumors', 'Phenotype', 'HP:0002664', (66, 72)) ('LA', 'Phenotype', 'HP:0003128', (7, 9)) ('lactate', 'Chemical', 'MESH:D019344', (87, 94)) 31333 28341846 Intra-operatively, patients in the normolactatemia group experienced lower maximum heart rate and shorter anesthetic time than those in the MH groups, while the SH/LA group had a longer operative time than the normolactatemia group (Table 3). ('lactate', 'Chemical', 'MESH:D019344', (40, 47)) ('patients', 'Species', '9606', (19, 27)) ('maximum heart rate', 'Phenotype', 'HP:0001649', (75, 93)) ('anesthetic time', 'MPA', (106, 121)) ('MH', 'Chemical', '-', (140, 142)) ('lactate', 'Chemical', 'MESH:D019344', (215, 222)) ('lower', 'NegReg', (69, 74)) ('normolactatemia', 'Var', (35, 50)) ('LA', 'Phenotype', 'HP:0003128', (164, 166)) ('maximum heart rate', 'MPA', (75, 93)) ('shorter', 'NegReg', (98, 105)) 31334 28341846 Post-operatively, subjects in the group with SH/LA had a longer mechanical ventilation time, greater maximum heart rate, and longer length of hospitalization than those in the normolactatemia group. ('LA', 'Phenotype', 'HP:0003128', (48, 50)) ('longer', 'PosReg', (57, 63)) ('mechanical ventilation time', 'MPA', (64, 91)) ('SH/LA', 'Var', (45, 50)) ('lactate', 'Chemical', 'MESH:D019344', (181, 188)) ('maximum heart rate', 'MPA', (101, 119)) ('maximum heart rate', 'Phenotype', 'HP:0001649', (101, 119)) 31338 28341846 According to the results, patients with post-operative SH/LA are likely to experience a longer post-operative hospitalization, a higher post-operative maximum heart rate, and a longer duration of mechanical ventilation than those with normolactatemia. ('post-operative', 'Var', (40, 54)) ('higher', 'PosReg', (129, 135)) ('patients', 'Species', '9606', (26, 34)) ('SH/LA', 'Var', (55, 60)) ('maximum heart rate', 'Phenotype', 'HP:0001649', (151, 169)) ('lactate', 'Chemical', 'MESH:D019344', (240, 247)) ('LA', 'Phenotype', 'HP:0003128', (58, 60)) 31344 28341846 Therefore, anaerobic glycolysis is the most common cause of hyperlactatemia or even lactic acidosis. ('lactic acidosis', 'Disease', (84, 99)) ('lactic acidosis', 'Disease', 'MESH:D000140', (84, 99)) ('hyperlactatemia', 'Disease', (60, 75)) ('hyperlactatemia', 'Disease', 'MESH:D065906', (60, 75)) ('acidosis', 'Phenotype', 'HP:0001941', (91, 99)) ('cause', 'Reg', (51, 56)) ('lactic acidosis', 'Phenotype', 'HP:0003128', (84, 99)) ('anaerobic', 'Var', (11, 20)) 31386 28341846 Unexpectedly, the incidence of diabetes mellitus in the SH/LA group was lower than that in the normolactatemia group. ('diabetes mellitus', 'Phenotype', 'HP:0000819', (31, 48)) ('diabetes mellitus', 'Disease', (31, 48)) ('lower', 'NegReg', (72, 77)) ('diabetes mellitus', 'Disease', 'MESH:D003920', (31, 48)) ('SH/LA', 'Var', (56, 61)) ('lactate', 'Chemical', 'MESH:D019344', (100, 107)) ('LA', 'Phenotype', 'HP:0003128', (59, 61)) 31397 28341846 Second, excessive catecholamine secretion as a result of pheochromocytoma resection may induce SH/LA, and the effect of epinephrine might be stronger than that of norepinephrine. ('excessive catecholamine', 'Phenotype', 'HP:0003334', (8, 31)) ('SH/LA', 'Disease', (95, 100)) ('excessive', 'PosReg', (8, 17)) ('catecholamine secretion', 'MPA', (18, 41)) ('pheochromocytoma', 'Disease', (57, 73)) ('catecholamine', 'Chemical', 'MESH:D002395', (18, 31)) ('epinephrine', 'Chemical', 'MESH:D004837', (120, 131)) ('resection', 'Var', (74, 83)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (57, 73)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (57, 73)) ('LA', 'Phenotype', 'HP:0003128', (98, 100)) ('induce', 'PosReg', (88, 94)) ('epinephrine', 'Chemical', 'MESH:D004837', (166, 177)) ('norepinephrine', 'Chemical', 'MESH:D009638', (163, 177)) 31440 15225350 Of note, a positive LR above 10 and negative LR below 0.1 has been noted to generate large changes from pre-test to post-test probability of disease, often resulting in a large change in patient management; whereas positive LRs between 5 and 10 and negative LRs between 0.1 and 0.2 are considered to generate moderate shifts in pre-test to post-test probability of disease. ('changes', 'Reg', (91, 98)) ('resulting', 'Reg', (156, 165)) ('patient management', 'MPA', (187, 205)) ('positive', 'Var', (11, 19)) ('change', 'Reg', (177, 183)) ('patient', 'Species', '9606', (187, 194)) 31533 26419235 Microscopically, samples from the adrenal tumor revealed diffuse large B cell lymphoma (DLBCL) with the following immunophenotype: CD20(+), CD45(+), CD3(-), Ki67-50 %, CD5(-), CD10(-), BCL6(-), MUM1(-), and cyclin D1(-) (Fig. ('CD45', 'Gene', '5788', (140, 144)) ('adrenal tumor', 'Disease', (34, 47)) ('cyclin D1(-', 'Gene', (207, 218)) ('BCL6', 'Gene', '604', (185, 189)) ('CD20', 'Gene', (131, 135)) ('MUM1', 'Gene', '84939', (194, 198)) ('B cell lymphoma', 'Disease', 'MESH:D016393', (71, 86)) ('CD10', 'Gene', '4311', (176, 180)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (34, 47)) ('CD20', 'Gene', '54474', (131, 135)) ('cyclin D1(-)', 'Gene', '595', (207, 219)) ('CD5', 'Gene', (168, 171)) ('CD3(-', 'Var', (149, 154)) ('adrenal tumor', 'Disease', 'MESH:D000310', (34, 47)) ('B cell lymphoma', 'Phenotype', 'HP:0012191', (71, 86)) ('Ki67-50 %', 'Var', (157, 166)) ('MUM1', 'Gene', (194, 198)) ('CD10', 'Gene', (176, 180)) ('lymphoma', 'Phenotype', 'HP:0002665', (78, 86)) ('diffuse', 'Disease', (57, 64)) ('large B cell', 'Phenotype', 'HP:0005404', (65, 77)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) ('BCL6', 'Gene', (185, 189)) ('B cell lymphoma', 'Disease', (71, 86)) ('CD5', 'Gene', '921', (168, 171)) ('CD45', 'Gene', (140, 144)) 31535 26419235 The microscopic picture of brown focus was consistent with the diagnosis of pheochromocytoma (chromogranin A(+) and S-100(+); Fig. ('pheochromocytoma', 'Disease', (76, 92)) ('chromogranin A', 'Gene', (94, 108)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (76, 92)) ('S-100', 'Var', (116, 121)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (76, 92)) ('chromogranin A', 'Gene', '1113', (94, 108)) 31623 23668927 Moreover, tumors that contain a large number of aneuploid or tetraploid cells are more likely to recur. ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('aneuploid', 'Var', (48, 57)) ('recur', 'CPA', (97, 102)) ('tetraploid cells', 'Var', (61, 77)) ('tumors', 'Disease', 'MESH:D009369', (10, 16)) ('tumors', 'Disease', (10, 16)) ('tumors', 'Phenotype', 'HP:0002664', (10, 16)) 31654 23668927 Such unresectable tumors may be treated with palliative chemotherapy with cyclophosphamide, dacarbazine, and vincristine, external beam radiotherapy for bony metastases, or 131I-labeled MIBG. ('vincristine', 'Chemical', 'MESH:D014750', (109, 120)) ('bony metastases', 'Disease', 'MESH:D009362', (153, 168)) ('dacarbazine', 'Chemical', 'MESH:D003606', (92, 103)) ('MIBG', 'Chemical', 'MESH:D019797', (186, 190)) ('tumors', 'Disease', (18, 24)) ('cyclophosphamide', 'Chemical', 'MESH:D003520', (74, 90)) ('tumors', 'Disease', 'MESH:D009369', (18, 24)) ('131I-labeled', 'Var', (173, 185)) ('131I', 'Chemical', 'MESH:C000614965', (173, 177)) ('tumors', 'Phenotype', 'HP:0002664', (18, 24)) ('bony metastases', 'Disease', (153, 168)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) ('MIBG', 'Gene', (186, 190)) 31670 23457505 Pheochromocytoma also presents in familial syndromes associated with germline mutations of the genes encoding VHL, RET, NF1, SDH-A, B, C, and D, SDHAF2, TMEM127, and MAX . ('Pheochromocytoma', 'Disease', (0, 16)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('TMEM127', 'Gene', (153, 160)) ('VHL', 'Gene', '7428', (110, 113)) ('TMEM127', 'Gene', '55654', (153, 160)) ('SDHAF2', 'Gene', '54949', (145, 151)) ('mutations', 'Var', (78, 87)) ('NF1', 'Gene', (120, 123)) ('SDHAF2', 'Gene', (145, 151)) ('familial syndromes', 'Disease', (34, 52)) ('RET', 'Gene', '5979', (115, 118)) ('associated', 'Reg', (53, 63)) ('NF1', 'Gene', '4763', (120, 123)) ('SDH-A, B, C, and D', 'Gene', '6389;6390;6391;6392', (125, 143)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('VHL', 'Gene', (110, 113)) ('RET', 'Gene', (115, 118)) 31673 23457505 Among the established subtypes, tumors with SDH-B mutation have a particularly high propensity to metastasize. ('SDH-B', 'Gene', '6390', (44, 49)) ('tumors', 'Phenotype', 'HP:0002664', (32, 38)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('metastasize', 'CPA', (98, 109)) ('SDH-B', 'Gene', (44, 49)) ('tumors', 'Disease', (32, 38)) ('mutation', 'Var', (50, 58)) ('tumors', 'Disease', 'MESH:D009369', (32, 38)) 31682 23457505 Currently no inhibitor has received regulatory approval but recent phase II studies with clinical responses that meet RECIST criteria suggest strategies for further development in several settings including HER2-positive breast cancer patients progressing on or resistant to trastuzumab, or non-small cell lung cancer patients with ALK mutations progressing on or resistant to crizotinib. ('ALK', 'Gene', (332, 335)) ('HER2', 'Gene', '2064', (207, 211)) ('breast cancer', 'Disease', 'MESH:D001943', (221, 234)) ('breast cancer', 'Disease', (221, 234)) ('rat', 'Species', '10116', (144, 147)) ('non-small cell lung cancer', 'Phenotype', 'HP:0030358', (291, 317)) ('cancer', 'Phenotype', 'HP:0002664', (311, 317)) ('patients', 'Species', '9606', (235, 243)) ('trastuzumab', 'Chemical', 'MESH:D000068878', (275, 286)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (295, 317)) ('crizotinib', 'Chemical', 'MESH:D000077547', (377, 387)) ('HER2', 'Gene', (207, 211)) ('non-small cell lung cancer', 'Disease', 'MESH:D002289', (291, 317)) ('cancer', 'Phenotype', 'HP:0002664', (228, 234)) ('patients', 'Species', '9606', (318, 326)) ('non-small cell lung cancer', 'Disease', (291, 317)) ('mutations', 'Var', (336, 345)) ('lung cancer', 'Phenotype', 'HP:0100526', (306, 317)) ('ALK', 'Gene', '238', (332, 335)) ('breast cancer', 'Phenotype', 'HP:0003002', (221, 234)) 31739 23457505 We tested the effect of Hsp90 inhibitor treatment on cell migration in the metastatic pheochromocytoma cell line MTT and found that 17-AAG reduced serum-stimulated migration (Fig. ('pheochromocytoma', 'Disease', 'MESH:D010673', (86, 102)) ('17-AAG', 'Var', (132, 138)) ('Hsp90', 'Gene', (24, 29)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (86, 102)) ('MTT', 'Chemical', 'MESH:C070243', (113, 116)) ('Hsp90', 'Gene', '3320', (24, 29)) ('serum-stimulated migration', 'CPA', (147, 173)) ('rat', 'Species', '10116', (61, 64)) ('reduced', 'NegReg', (139, 146)) ('rat', 'Species', '10116', (167, 170)) ('pheochromocytoma', 'Disease', (86, 102)) 31769 23457505 As shown in Figure 6, treatment with ganetespib for 10 days, with drug washout and readministration every two days resulted in a dose-dependent decrease in pheochromocytoma cell number. ('pheochromocytoma', 'Disease', (156, 172)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (156, 172)) ('decrease', 'NegReg', (144, 152)) ('ganetespib', 'Var', (37, 47)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (156, 172)) ('rat', 'Species', '10116', (93, 96)) ('ganetespib', 'Chemical', 'MESH:C533237', (37, 47)) 31772 23457505 It has been suggested that these mutations can be divided into distinct molecular pathways causing errors in the HIF hypoxia-driven pathway (VHL, SDHB and SDHD) and errors in RNA synthesis and metabolism (RET, NF1, MAX, and TMEM127), while KIF1BBeta is thought to impact both pathways. ('TMEM127', 'Gene', (224, 231)) ('SDHD', 'Gene', (155, 159)) ('mutations', 'Var', (33, 42)) ('RNA synthesis', 'MPA', (175, 188)) ('TMEM127', 'Gene', '55654', (224, 231)) ('VHL', 'Gene', '7428', (141, 144)) ('HIF hypoxia', 'Disease', (113, 124)) ('metabolism', 'MPA', (193, 203)) ('RET', 'Gene', '5979', (205, 208)) ('HIF hypoxia', 'Disease', 'MESH:D000860', (113, 124)) ('SDHB', 'Gene', '6390', (146, 150)) ('NF1', 'Gene', '4763', (210, 213)) ('impact', 'Reg', (264, 270)) ('NF1', 'Gene', (210, 213)) ('SDHD', 'Gene', '6392', (155, 159)) ('RET', 'Gene', (205, 208)) ('errors', 'Var', (165, 171)) ('SDHB', 'Gene', (146, 150)) ('errors', 'Var', (99, 105)) ('VHL', 'Gene', (141, 144)) 31773 23457505 VHL targets HIF to the proteasome under normoxic conditions and loss of VHL results in HIF overexpression and angiogenesis. ('VHL', 'Gene', '7428', (72, 75)) ('overexpression', 'PosReg', (91, 105)) ('VHL', 'Gene', (0, 3)) ('loss', 'Var', (64, 68)) ('HIF', 'CPA', (87, 90)) ('VHL', 'Gene', '7428', (0, 3)) ('angiogenesis', 'CPA', (110, 122)) ('VHL', 'Gene', (72, 75)) 31774 23457505 SDHB and SDHD mutations result in accumulation of succinate, which inhibits HIF prolyl hydroxylation, and in the absence of prolyl-hydroxylated HIF VHL cannot recognize HIF and target it for degradation, and thus HIF is overexpressed via a different but complementary mechanism from VHL mutation. ('VHL', 'Gene', (148, 151)) ('HIF VHL', 'Disease', (144, 151)) ('VHL', 'Gene', '7428', (148, 151)) ('SDHD', 'Gene', (9, 13)) ('SDHD', 'Gene', '6392', (9, 13)) ('HIF prolyl hydroxylation', 'MPA', (76, 100)) ('VHL', 'Gene', (283, 286)) ('succinate', 'Chemical', 'MESH:D019802', (50, 59)) ('accumulation', 'PosReg', (34, 46)) ('VHL', 'Gene', '7428', (283, 286)) ('SDHB', 'Gene', '6390', (0, 4)) ('inhibits', 'NegReg', (67, 75)) ('HIF VHL', 'Disease', 'MESH:D006623', (144, 151)) ('mutations', 'Var', (14, 23)) ('SDHB', 'Gene', (0, 4)) ('succinate', 'MPA', (50, 59)) 31787 23457505 Clinical experience has demonstrated that targeted therapies can elicit the formation of secondary mutations in target molecules, leading to formation of drug resistance. ('drug resistance', 'MPA', (154, 169)) ('elicit', 'Reg', (65, 71)) ('mutations', 'Var', (99, 108)) ('formation', 'Reg', (141, 150)) ('drug resistance', 'Phenotype', 'HP:0020174', (154, 169)) ('rat', 'Species', '10116', (31, 34)) 31803 23457505 In this context, the first generation Hsp90 inhibitors have been shown to be very active against subcutaneous xenografts but to increase growth of prostatic and breast carcinoma cells in bone. ('carcinoma', 'Phenotype', 'HP:0030731', (168, 177)) ('Hsp90', 'Gene', (38, 43)) ('increase', 'PosReg', (128, 136)) ('inhibitors', 'Var', (44, 54)) ('breast carcinoma', 'Disease', (161, 177)) ('Hsp90', 'Gene', '3320', (38, 43)) ('growth', 'MPA', (137, 143)) ('breast carcinoma', 'Disease', 'MESH:D001943', (161, 177)) ('breast carcinoma', 'Phenotype', 'HP:0003002', (161, 177)) ('rat', 'Species', '10116', (31, 34)) 31807 23457505 In our experiments using primary human cell cultures, we observed a dose-dependent reduction in tumor cells after treatment with ganetespib, further emphasizing the efficacy of this compound on pheochromocytoma tumor cells. ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('tumor', 'Disease', 'MESH:D009369', (211, 216)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (194, 210)) ('ganetespib', 'Chemical', 'MESH:C533237', (129, 139)) ('tumor', 'Disease', (96, 101)) ('pheochromocytoma tumor', 'Disease', 'MESH:D010673', (194, 216)) ('human', 'Species', '9606', (33, 38)) ('tumor', 'Phenotype', 'HP:0002664', (211, 216)) ('tumor', 'Disease', (211, 216)) ('tumor', 'Disease', 'MESH:D009369', (96, 101)) ('reduction', 'NegReg', (83, 92)) ('ganetespib', 'Var', (129, 139)) ('pheochromocytoma tumor', 'Disease', (194, 216)) 31816 22655253 Agents that bind somatostatin receptors include 111In-pentetreotide and 68Ga-labeled somatostatin analog peptides (68Ga-DOTA-TOC, 68Ga-DOTA-NOC, 68Ga-DOTA-TATE). ('somatostatin', 'Gene', '6750', (85, 97)) ('somatostatin', 'Gene', '6750', (17, 29)) ('somatostatin', 'Gene', (17, 29)) ('somatostatin', 'Gene', (85, 97)) ('68Ga-DOTA-TOC', 'Var', (115, 128)) 31831 22655253 Patients with an inherited predisposition often develop multiple, bilateral, and early onset paragangliomas (as a result of germline mutations in the predisposing genes; Amar et al.,). ('Patients', 'Species', '9606', (0, 8)) ('paragangliomas', 'Disease', 'MESH:D010235', (93, 107)) ('paragangliomas', 'Disease', (93, 107)) ('paragangliomas', 'Phenotype', 'HP:0002668', (93, 107)) ('mutations', 'Var', (133, 142)) ('paraganglioma', 'Phenotype', 'HP:0002668', (93, 106)) 31833 22655253 These syndromes are caused by mutations in the RET, VHL, NF1, and succinate dehydrogenase (SDH) -B, -C, and -D genes, respectively (Bryant et al.,). ('VHL', 'Gene', '7428', (52, 55)) ('RET', 'Gene', (47, 50)) ('NF1', 'Gene', (57, 60)) ('NF1', 'Gene', '4763', (57, 60)) ('mutations', 'Var', (30, 39)) ('caused by', 'Reg', (20, 29)) ('RET', 'Gene', '5979', (47, 50)) ('VHL', 'Gene', (52, 55)) ('succinate dehydrogenase (SDH) -B', 'Gene', '6390', (66, 98)) 31835 22655253 SDHB gene mutations are known to be associated with extra-adrenal localization, overproduction of norepinephrine and dopamine, and a high risk of malignancy with a poor prognosis (Gimenez-Roqueplo et al.,; Neumann et al.,; Amar et al.,; Timmers et al.,). ('norepinephrine', 'Chemical', 'MESH:D009638', (98, 112)) ('overproduction', 'PosReg', (80, 94)) ('dopamine', 'Chemical', 'MESH:D004298', (117, 125)) ('associated', 'Reg', (36, 46)) ('malignancy', 'Disease', 'MESH:D009369', (146, 156)) ('SDHB', 'Gene', '6390', (0, 4)) ('mutations', 'Var', (10, 19)) ('malignancy', 'Disease', (146, 156)) ('extra-adrenal localization', 'MPA', (52, 78)) ('SDHB', 'Gene', (0, 4)) 31836 22655253 In contrast to the high malignant potential of tumors related to SDHB germline mutations, patients with NF1,RET, VHL, and SDHD mutations rarely develop metastases (Amar et al.,; Gimenez-Roqueplo et al.,). ('tumors', 'Disease', (47, 53)) ('tumors', 'Disease', 'MESH:D009369', (47, 53)) ('RET', 'Gene', '5979', (108, 111)) ('VHL', 'Gene', (113, 116)) ('metastases', 'Disease', (152, 162)) ('SDHD', 'Disease', 'None', (122, 126)) ('NF1', 'Gene', '4763', (104, 107)) ('VHL', 'Gene', '7428', (113, 116)) ('SDHB', 'Gene', (65, 69)) ('metastases', 'Disease', 'MESH:D009362', (152, 162)) ('tumors', 'Phenotype', 'HP:0002664', (47, 53)) ('RET', 'Gene', (108, 111)) ('SDHB', 'Gene', '6390', (65, 69)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('mutations', 'Var', (127, 136)) ('patients', 'Species', '9606', (90, 98)) ('SDHD', 'Disease', (122, 126)) ('NF1', 'Gene', (104, 107)) 31837 22655253 All these underlying mutations can lead to various tumor locations (with the possibility of multifocal disease), biochemical phenotypes, and malignant potentials: thus paragangliomas are exemplary for functional imaging. ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('paragangliomas', 'Disease', (168, 182)) ('paragangliomas', 'Disease', 'MESH:D010235', (168, 182)) ('tumor', 'Disease', (51, 56)) ('paraganglioma', 'Phenotype', 'HP:0002668', (168, 181)) ('paragangliomas', 'Phenotype', 'HP:0002668', (168, 182)) ('lead to', 'Reg', (35, 42)) ('tumor', 'Disease', 'MESH:D009369', (51, 56)) ('multifocal disease', 'Disease', (92, 110)) ('multifocal disease', 'Disease', 'None', (92, 110)) ('mutations', 'Var', (21, 30)) 31845 22655253 An analog of norepinephrine, MIBG enters cells through the cell membrane norepinephrine transporter (NET) and is then transported and stored in neurosecretory granules via the vesicular monoamine transporter (VMAT; Eisenhofer,). ('norepinephrine transporter', 'Gene', (73, 99)) ('NET', 'Gene', (101, 104)) ('norepinephrine transporter', 'Gene', '6530', (73, 99)) ('norepinephrine', 'Chemical', 'MESH:D009638', (13, 27)) ('MIBG', 'Var', (29, 33)) ('MIBG', 'Chemical', 'MESH:D019797', (29, 33)) ('norepinephrine', 'Chemical', 'MESH:D009638', (73, 87)) ('NET', 'Gene', '6530', (101, 104)) 31847 22655253 Although 131I-labeled MIBG was initially used for scintigraphy, the superiority of 123I-labeledMIBG has been demonstrated (Lynn et al.,; Shulkin et al.,), due to its higher sensitivity, lower radiation exposure, and improved imaging quality with the possibility of SPECT imaging. ('higher', 'PosReg', (166, 172)) ('imaging', 'MPA', (225, 232)) ('improved', 'PosReg', (216, 224)) ('123I-labeledMIBG', 'Var', (83, 99)) ('123I', 'Chemical', 'MESH:C000614958', (83, 87)) ('sensitivity', 'MPA', (173, 184)) ('131I', 'Chemical', 'MESH:C000614965', (9, 13)) ('MIBG', 'Chemical', 'MESH:D019797', (22, 26)) ('MIBG', 'Chemical', 'MESH:D019797', (95, 99)) 31859 22655253 To summarize, 123I-MIBG has high sensitivity for primary sympathetic paragangliomas, but poor sensitivity for metastases; therefore it is only useful in metastatic patients to evaluate whether they qualify for 131I-MIBG treatment. ('metastases', 'Disease', (110, 120)) ('131I-MIBG', 'Chemical', '-', (210, 219)) ('paraganglioma', 'Phenotype', 'HP:0002668', (69, 82)) ('123I-MIBG', 'Var', (14, 23)) ('metastases', 'Disease', 'MESH:D009362', (110, 120)) ('paragangliomas', 'Disease', (69, 83)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (14, 23)) ('paragangliomas', 'Disease', 'MESH:D010235', (69, 83)) ('paragangliomas', 'Phenotype', 'HP:0002668', (69, 83)) ('patients', 'Species', '9606', (164, 172)) 31866 22655253 However, 123I-MIBG does have a high sensitivity and must be considered as a useful tracer in cases of adrenal non-metastatic paragangliomas. ('paragangliomas', 'Disease', 'MESH:D010235', (125, 139)) ('paragangliomas', 'Disease', (125, 139)) ('paragangliomas', 'Phenotype', 'HP:0002668', (125, 139)) ('paraganglioma', 'Phenotype', 'HP:0002668', (125, 138)) ('123I-MIBG', 'Var', (9, 18)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (9, 18)) 31890 22655253 In a cohort of VHL mutation carriers, 18F-FDA was demonstrated to be superior to 131/123I-MIBG (Kaji et al.,). ('mutation', 'Var', (19, 27)) ('18F-FDA', 'Chemical', '-', (38, 45)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (85, 94)) ('VHL', 'Gene', (15, 18)) ('VHL', 'Gene', '7428', (15, 18)) 31894 22655253 Preferred 18F-FDA indications would be sympathetic non-head and neck paragangliomas, except those related to the SDHB mutation. ('SDHB', 'Gene', '6390', (113, 117)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (55, 83)) ('18F-FDA', 'Chemical', '-', (10, 17)) ('neck paragangliomas', 'Disease', (64, 83)) ('paraganglioma', 'Phenotype', 'HP:0002668', (69, 82)) ('SDHB', 'Gene', (113, 117)) ('mutation', 'Var', (118, 126)) ('paragangliomas', 'Phenotype', 'HP:0002668', (69, 83)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (64, 83)) 31898 22655253 In particular, a recent prospective study published by King et al.,; on 10 patients carrying SDHx mutation, with a total of 26 head and neck paragangliomas) found a 100% sensitivity of 18F-FDOPA. ('mutation', 'Var', (98, 106)) ('neck paragangliomas', 'Disease', (136, 155)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (127, 155)) ('patients', 'Species', '9606', (75, 83)) ('paragangliomas', 'Phenotype', 'HP:0002668', (141, 155)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (136, 155)) ('sensitivity', 'MPA', (170, 181)) ('paraganglioma', 'Phenotype', 'HP:0002668', (141, 154)) ('18F-FDOPA', 'MPA', (185, 194)) ('SDHx', 'Chemical', '-', (93, 97)) ('18F-FDOPA', 'Chemical', '-', (185, 194)) ('SDHx', 'Gene', (93, 97)) 31903 22655253 Timmers' study of patients with and without SDHB mutations found a high sensitivity for non-SDHB-related paragangliomas, but poor sensitivity for SDHB-related paragangliomas, especially for metastatic paragangliomas (Timmers et al.,). ('paragangliomas', 'Phenotype', 'HP:0002668', (105, 119)) ('paragangliomas', 'Disease', 'MESH:D010235', (159, 173)) ('paraganglioma', 'Phenotype', 'HP:0002668', (159, 172)) ('paragangliomas', 'Phenotype', 'HP:0002668', (159, 173)) ('SDHB', 'Gene', '6390', (44, 48)) ('mutations', 'Var', (49, 58)) ('SDHB', 'Gene', '6390', (92, 96)) ('paragangliomas', 'Disease', (201, 215)) ('paragangliomas', 'Disease', (105, 119)) ('SDHB', 'Gene', '6390', (146, 150)) ('SDHB', 'Gene', (44, 48)) ('paragangliomas', 'Disease', (159, 173)) ('SDHB', 'Gene', (92, 96)) ('paraganglioma', 'Phenotype', 'HP:0002668', (201, 214)) ('patients', 'Species', '9606', (18, 26)) ('paraganglioma', 'Phenotype', 'HP:0002668', (105, 118)) ('SDHB', 'Gene', (146, 150)) ('paragangliomas', 'Disease', 'MESH:D010235', (201, 215)) ('paragangliomas', 'Phenotype', 'HP:0002668', (201, 215)) ('paragangliomas', 'Disease', 'MESH:D010235', (105, 119)) 31917 22655253 In parallel, basic science studies have found that oncogenetic signals resulting from mutations are present in both benign and malignant tumors. ('mutations', 'Var', (86, 95)) ('tumors', 'Phenotype', 'HP:0002664', (137, 143)) ('malignant tumors', 'Disease', (127, 143)) ('malignant tumors', 'Disease', 'MESH:D018198', (127, 143)) ('oncogenetic signals', 'MPA', (51, 70)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) 31924 22655253 Mutation of the SDHB gene results in a loss of function of the SDH complex. ('SDH', 'Gene', '6390', (63, 66)) ('SDHB', 'Gene', '6390', (16, 20)) ('Mutation', 'Var', (0, 8)) ('SDH', 'Gene', (63, 66)) ('SDHB', 'Gene', (16, 20)) ('SDH', 'Gene', '6390', (16, 19)) ('SDH', 'Gene', (16, 19)) ('loss of function', 'NegReg', (39, 55)) 31936 22655253 Newer somatostatin analogs, 68Ga-DOTA-Tyr3-octreotide (DOTATOC; Buchmann et al.,; Kroiss et al.,), 68Ga-DOTANOC (Wild et al.,), and 68Ga-DOTA-TATE (Win et al.,; Naji et al.,) have shown favorable characteristics in imaging, with a high affinity for SSRs and a stable and easy process of labeling. ('68Ga-DOTANOC', 'Var', (99, 111)) ('somatostatin', 'Gene', (6, 18)) ('68Ga-DOTA-TATE', 'Var', (132, 146)) ('somatostatin', 'Gene', '6750', (6, 18)) 31953 22655253 In the meantime, we suggest the first-line exam choice to be as follows: for SDHB-related paragangliomas, 18F-FDG; for non-SDHB sympathetic paragangliomas, 18F-FDA (or 18F-FDOPA in adrenal paragangliomas); and for parasympathetic head and neck paragangliomas, 18F-FDOPA. ('paragangliomas', 'Disease', (140, 154)) ('paragangliomas', 'Disease', (244, 258)) ('paragangliomas', 'Disease', 'MESH:D010235', (189, 203)) ('SDHB', 'Gene', '6390', (77, 81)) ('paragangliomas', 'Disease', (90, 104)) ('paragangliomas', 'Phenotype', 'HP:0002668', (189, 203)) ('paraganglioma', 'Phenotype', 'HP:0002668', (189, 202)) ('SDHB', 'Gene', '6390', (123, 127)) ('paraganglioma', 'Phenotype', 'HP:0002668', (244, 257)) ('18F-FDG', 'Chemical', '-', (106, 113)) ('18F-FDOPA', 'Chemical', '-', (260, 269)) ('paragangliomas', 'Disease', 'MESH:D010235', (140, 154)) ('neck paragangliomas', 'Disease', (239, 258)) ('paragangliomas', 'Phenotype', 'HP:0002668', (140, 154)) ('paraganglioma', 'Phenotype', 'HP:0002668', (140, 153)) ('paragangliomas', 'Disease', 'MESH:D010235', (244, 258)) ('paragangliomas', 'Phenotype', 'HP:0002668', (244, 258)) ('SDHB', 'Gene', (123, 127)) ('SDHB', 'Gene', (77, 81)) ('paragangliomas', 'Disease', (189, 203)) ('adrenal paragangliomas', 'Disease', (181, 203)) ('paragangliomas', 'Disease', 'MESH:D010235', (90, 104)) ('18F-FDA', 'Chemical', '-', (156, 163)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (230, 258)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (239, 258)) ('adrenal paragangliomas', 'Disease', 'MESH:D010236', (181, 203)) ('paragangliomas', 'Phenotype', 'HP:0002668', (90, 104)) ('paraganglioma', 'Phenotype', 'HP:0002668', (90, 103)) ('18F-FDA', 'Var', (156, 163)) ('18F-FDOPA', 'Chemical', '-', (168, 177)) 32003 22145136 In some cases, no definite abnormality is seen on CT or MRI, and 123I-MIBG scans are negative in around 15% of pheochromocytomas and in up to 50% of malignant tumors because of relatively lower afinity of 123I-MIBG to the norepinephrine transporters in comparison to newer compounds, the lack of storage granules or the loss of transporters by tumor cell dedifferentiation. ('lower', 'NegReg', (188, 193)) ('malignant tumors', 'Disease', 'MESH:D018198', (149, 165)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (111, 127)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (111, 128)) ('pheochromocytomas', 'Disease', (111, 128)) ('123I-MIBG', 'Var', (205, 214)) ('123I-MIBG', 'Chemical', '-', (205, 214)) ('malignant tumors', 'Disease', (149, 165)) ('tumor', 'Disease', (344, 349)) ('afinity', 'MPA', (194, 201)) ('tumor', 'Disease', 'MESH:D009369', (344, 349)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (111, 128)) ('loss', 'NegReg', (320, 324)) ('norepinephrine transporter', 'Gene', (222, 248)) ('tumor', 'Disease', (159, 164)) ('123I-MIBG', 'Chemical', '-', (65, 74)) ('tumor', 'Disease', 'MESH:D009369', (159, 164)) ('tumor', 'Phenotype', 'HP:0002664', (344, 349)) ('norepinephrine transporter', 'Gene', '6530', (222, 248)) ('tumors', 'Phenotype', 'HP:0002664', (159, 165)) 32010 22145136 PET radiotracers that have been successfully used in the investigation of pheochromocytoma include 18F-DOPA, 18FDA, DOTA-Tyr3-octreotide (DOTATOC) and DOTA-Nal-octreotide (DOTANOC), and 18F-FDG. ('18F-DOPA', 'Chemical', '-', (99, 107)) ('DOTA-Tyr3-octreotide', 'Var', (116, 136)) ('DOTA-Tyr3-octreotide', 'Chemical', 'MESH:C106246', (116, 136)) ('pheochromocytoma', 'Disease', (74, 90)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (74, 90)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (74, 90)) ('DOTA-Nal-octreotide', 'Chemical', '-', (151, 170)) ('18FDA', 'Chemical', '-', (109, 114)) ('18F-FDG', 'Chemical', 'MESH:D019788', (186, 193)) 32023 22145136 Factors favoring phenoxybenzamine use are its long duration of action leading to twice daily dosing and that it causes noncompetitive blockade of alpha-receptors; thus it prevents episodic surges of catecholamine releases during pre- and post-operative period. ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (17, 33)) ('catecholamine', 'Chemical', 'MESH:D002395', (199, 212)) ('prevents', 'NegReg', (171, 179)) ('episodic', 'Disease', (180, 188)) ('phenoxybenzamine', 'Var', (17, 33)) ('alpha-receptors', 'Protein', (146, 161)) ('episodic', 'Disease', 'MESH:C580065', (180, 188)) ('noncompetitive blockade', 'MPA', (119, 142)) 32024 22145136 However, disadvantages of phenoxybenzamine include tachycardia, persistent postoperative hypotension in view of covalent, noncompetitive binding to the alpha-receptor, somnolence, stuffiness of nose, headache, and postural hypotension requiring intravenous fluid replacement. ('stuffiness', 'Disease', 'None', (180, 190)) ('persistent postoperative hypotension', 'Phenotype', 'HP:0001278', (64, 100)) ('hypotension', 'Disease', (89, 100)) ('somnolence', 'Disease', 'MESH:D006970', (168, 178)) ('hypotension', 'Disease', (223, 234)) ('headache', 'Phenotype', 'HP:0002315', (200, 208)) ('somnolence', 'Disease', (168, 178)) ('phenoxybenzamine', 'Var', (26, 42)) ('hypotension', 'Disease', 'MESH:D007022', (89, 100)) ('alpha-receptor', 'Protein', (152, 166)) ('hypotension', 'Disease', 'MESH:D007022', (223, 234)) ('headache', 'Disease', (200, 208)) ('hypotension', 'Phenotype', 'HP:0002615', (89, 100)) ('hypotension', 'Phenotype', 'HP:0002615', (223, 234)) ('tachycardia', 'Phenotype', 'HP:0001649', (51, 62)) ('tachycardia', 'Disease', (51, 62)) ('stuffiness of nose', 'Phenotype', 'HP:0001742', (180, 198)) ('tachycardia', 'Disease', 'MESH:D013610', (51, 62)) ('stuffiness', 'Disease', (180, 190)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (26, 42)) ('headache', 'Disease', 'MESH:D006261', (200, 208)) ('postural hypotension', 'Phenotype', 'HP:0001278', (214, 234)) ('postural', 'Disease', (214, 222)) 32040 22145136 Metyrosine and alpha-blockers when used together result in less labile blood pressure during anesthesia and surgery, reduced intraoperative blood loss, and reduced volume replacement during surgery compared with the use of alpha-blockers alone. ('volume replacement', 'MPA', (164, 182)) ('intraoperative blood loss', 'Disease', 'MESH:D016063', (125, 150)) ('reduced', 'NegReg', (117, 124)) ('alpha-blockers', 'Protein', (15, 29)) ('reduced', 'NegReg', (156, 163)) ('less', 'NegReg', (59, 63)) ('intraoperative blood loss', 'Disease', (125, 150)) ('labile blood pressure', 'MPA', (64, 85)) ('Metyrosine', 'Chemical', 'MESH:D019805', (0, 10)) ('Metyrosine', 'Var', (0, 10)) 32078 22145136 The large tumor size (5.5 cm) and minimally elevated 24-hour urinary vanillylmandelic acid (<= 2.1 mg/day/cm2) are significantly associated with a higher probability of a malignant pheochromocytoma portending a lower metastasis-free survival and mandates more rigorous follow-up after surgery. ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (171, 197)) ('malignant pheochromocytoma', 'Disease', (171, 197)) ('tumor', 'Disease', (10, 15)) ('<=', 'Var', (92, 94)) ('tumor', 'Disease', 'MESH:D009369', (10, 15)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (181, 197)) ('urinary vanillylmandelic acid', 'Phenotype', 'HP:0011978', (61, 90)) ('vanillylmandelic acid', 'Chemical', 'MESH:D014642', (69, 90)) ('lower', 'NegReg', (211, 216)) 32081 22145136 In a group of 28 patients shown to have sufficient uptake of 131I MIBG, objective partial responses were observed in 29% of the patients, and biochemical improvement was noted in 43% of the patients. ('131I MIBG', 'Chemical', '-', (61, 70)) ('patients', 'Species', '9606', (190, 198)) ('131I', 'Var', (61, 65)) ('patients', 'Species', '9606', (17, 25)) ('MIBG', 'Gene', (66, 70)) ('patients', 'Species', '9606', (128, 136)) 32115 33643901 One explanation may be that tumor cells physically absorb and neutralize ENO1 antibodies expressed and secreted on the surface to reduce circulating levels. ('reduce', 'NegReg', (130, 136)) ('tumor', 'Disease', (28, 33)) ('circulating levels', 'MPA', (137, 155)) ('neutralize', 'Var', (62, 72)) ('tumor', 'Disease', 'MESH:D009369', (28, 33)) ('antibodies', 'Protein', (78, 88)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) ('ENO1', 'Gene', (73, 77)) ('ENO1', 'Gene', '2023', (73, 77)) 32126 33643901 In this study, the cBio Cancer Genomics Portal (; accessed by April 30, 2020), which is a web tool for mutation analysis and visualization through TCGA cancer genomics profiles, was used for mutation analysis of ENO1. ('cancer', 'Disease', (152, 158)) ('cancer', 'Disease', 'MESH:D009369', (152, 158)) ('Cancer', 'Disease', (24, 30)) ('Cancer', 'Disease', 'MESH:D009369', (24, 30)) ('Cancer', 'Phenotype', 'HP:0002664', (24, 30)) ('cancer', 'Phenotype', 'HP:0002664', (152, 158)) ('ENO1', 'Gene', (212, 216)) ('ENO1', 'Gene', '2023', (212, 216)) ('mutation', 'Var', (191, 199)) 32141 33643901 The highest ENO1 expression was found in EBV-transformed lymphocytes, whereas the lowest was observed in the left ventricle of the heart. ('EBV-transformed', 'Var', (41, 56)) ('expression', 'MPA', (17, 27)) ('ENO1', 'Gene', (12, 16)) ('ENO1', 'Gene', '2023', (12, 16)) ('highest', 'PosReg', (4, 11)) 32148 33643901 The expression of ENO1 was significantly associated with the prognosis of eight types of cancers, including HNSC (HR = 1.32, P = 0.04), CESC (HR = 1.47, P = 0.04), BLCA (HR = 1.23, P = 0.04), LUAD (HR = 1.36, P = 0.01), SARC (HR = 1.36, P = 0.00), PAAD (HR = 1.65, P = 0.00), KICH (HR = 4.60, P = 0.00), and LIHC (HR = 1.63, P = 0.00), suggesting that high ENO1 expression might be an independent risk factor for these cancers (all HR > 1.00, P < 0.05). ('associated', 'Reg', (41, 51)) ('high', 'Var', (352, 356)) ('cancers', 'Phenotype', 'HP:0002664', (89, 96)) ('cancers', 'Disease', (89, 96)) ('KICH', 'Disease', (276, 280)) ('LUAD', 'Disease', (192, 196)) ('cancers', 'Disease', 'MESH:D009369', (419, 426)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) ('CESC', 'Disease', (136, 140)) ('BLCA', 'Disease', (164, 168)) ('ENO1', 'Gene', (18, 22)) ('cancers', 'Disease', 'MESH:D009369', (89, 96)) ('cancers', 'Phenotype', 'HP:0002664', (419, 426)) ('ENO1', 'Gene', (357, 361)) ('cancers', 'Disease', (419, 426)) ('ENO1', 'Gene', '2023', (18, 22)) ('KICH', 'Disease', 'None', (276, 280)) ('HNSC', 'Disease', (108, 112)) ('SARC', 'Disease', (220, 224)) ('cancer', 'Phenotype', 'HP:0002664', (419, 425)) ('ENO1', 'Gene', '2023', (357, 361)) ('LUAD', 'Phenotype', 'HP:0030078', (192, 196)) 32150 33643901 High ENO1 expression was significantly associated with worse OS in CESC (log-rank P = 0.04), BLCA (log-rank P = 0.03), KICH (log-rank P = 0.01), LIHC (log-rank P = 0.00), and SARC (log-rank P = 0.04), and worse DFS in KICH (log-rank P = 0.03) and SARC (log-rank P = 0.07). ('SARC', 'Disease', (175, 179)) ('LIHC', 'Disease', (145, 149)) ('BLCA', 'Disease', (93, 97)) ('KICH', 'Disease', 'None', (218, 222)) ('High', 'Var', (0, 4)) ('ENO1', 'Gene', '2023', (5, 9)) ('expression', 'MPA', (10, 20)) ('CESC', 'Disease', (67, 71)) ('ENO1', 'Gene', (5, 9)) ('KICH', 'Disease', 'None', (119, 123)) ('KICH', 'Disease', (218, 222)) ('KICH', 'Disease', (119, 123)) ('SARC', 'Disease', (247, 251)) 32155 33643901 Evidently, 195 samples in the altered group and 10,772 samples in the unaltered group were included for ENO1 mutation analysis. ('ENO1', 'Gene', '2023', (104, 108)) ('ENO1', 'Gene', (104, 108)) ('mutation', 'Var', (109, 117)) 32156 33643901 The results demonstrated that ENO1 was altered in 1.8% of all the included samples, including inframe mutation, missense mutation, truncating mutation, fusion, amplification, and deep deletion ( Figure 6 ). ('truncating', 'MPA', (131, 141)) ('amplification', 'Var', (160, 173)) ('ENO1', 'Gene', (30, 34)) ('deep deletion', 'Var', (179, 192)) ('ENO1', 'Gene', '2023', (30, 34)) ('altered', 'Reg', (39, 46)) ('fusion', 'Var', (152, 158)) ('missense mutation', 'Var', (112, 129)) 32157 33643901 Furthermore, the prognostic significance of ENO1 mutation was estimated via Kaplan-Meier method. ('ENO1', 'Gene', (44, 48)) ('ENO1', 'Gene', '2023', (44, 48)) ('mutation', 'Var', (49, 57)) 32189 33643901 These findings are consistent with a previous study showing that high ENO1 expression is significantly correlated with DNA replication and cell cycle in hepatocellular carcinoma. ('DNA replication', 'CPA', (119, 134)) ('carcinoma', 'Phenotype', 'HP:0030731', (168, 177)) ('ENO1', 'Gene', (70, 74)) ('ENO1', 'Gene', '2023', (70, 74)) ('expression', 'MPA', (75, 85)) ('hepatocellular carcinoma', 'Phenotype', 'HP:0001402', (153, 177)) ('cell cycle', 'CPA', (139, 149)) ('high', 'Var', (65, 69)) ('hepatocellular carcinoma', 'Disease', (153, 177)) ('hepatocellular carcinoma', 'Disease', 'MESH:D006528', (153, 177)) ('correlated', 'Reg', (103, 113)) 32197 33643901 Furthermore, the knockdown of ENO1 has been shown to promote apoptosis and induce the arrest of cell cycle in gastric cancer cells. ('gastric cancer', 'Disease', (110, 124)) ('apoptosis', 'CPA', (61, 70)) ('gastric cancer', 'Disease', 'MESH:D013274', (110, 124)) ('arrest', 'Disease', 'MESH:D006323', (86, 92)) ('arrest', 'Disease', (86, 92)) ('gastric cancer', 'Phenotype', 'HP:0012126', (110, 124)) ('cancer', 'Phenotype', 'HP:0002664', (118, 124)) ('ENO1', 'Gene', (30, 34)) ('ENO1', 'Gene', '2023', (30, 34)) ('knockdown', 'Var', (17, 26)) ('induce', 'Reg', (75, 81)) ('promote', 'PosReg', (53, 60)) 32202 33643901 Additionally, mutation of ENO1 was analysis, for it was proved that mutation could affect tumor progression; however, ENO1 mutation (1.8%) did not impact on prognosis in this study. ('affect', 'Reg', (83, 89)) ('mutation', 'Var', (68, 76)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('ENO1', 'Gene', (118, 122)) ('tumor', 'Disease', (90, 95)) ('ENO1', 'Gene', '2023', (118, 122)) ('ENO1', 'Gene', (26, 30)) ('ENO1', 'Gene', '2023', (26, 30)) ('tumor', 'Disease', 'MESH:D009369', (90, 95)) 32206 33643901 In consonance with our results, ENO1 expression was higher in late stages (stages III and IV), particularly that in KICH ( Figure 5E ), meanwhile, high ENO1 expression was significantly associated with worse OS in KICH ( Figure 4I ). ('worse OS', 'Disease', (202, 210)) ('expression', 'MPA', (157, 167)) ('ENO1', 'Gene', (152, 156)) ('ENO1', 'Gene', '2023', (152, 156)) ('KICH', 'Disease', 'None', (214, 218)) ('ENO1', 'Gene', '2023', (32, 36)) ('ENO1', 'Gene', (32, 36)) ('KICH', 'Disease', 'None', (116, 120)) ('high', 'Var', (147, 151)) ('associated', 'Reg', (186, 196)) ('higher', 'PosReg', (52, 58)) ('KICH', 'Disease', (214, 218)) ('expression', 'MPA', (37, 47)) ('KICH', 'Disease', (116, 120)) 32234 33028297 Intraoperatively, the RARLA group had a lower incidence of haemodynamic instability (26.3% vs. 56.2%, P = 0.038) and less intraoperative blood loss (100 ml vs. Two hundred milliliter, P = 0.042) than the RLA group. ('haemodynamic instability', 'MPA', (59, 83)) ('RLA', 'Chemical', '-', (204, 207)) ('intraoperative blood loss', 'Disease', (122, 147)) ('RARLA', 'Chemical', '-', (22, 27)) ('RARLA', 'Var', (22, 27)) ('intraoperative blood loss', 'Disease', 'MESH:D016063', (122, 147)) ('RLA', 'Chemical', '-', (24, 27)) ('lower', 'NegReg', (40, 45)) ('less', 'NegReg', (117, 121)) 32235 33028297 Postoperatively, the time to diet resumption, time to ambulation, time to drainage removal and postoperative hospital stay were shorter in the RARLA group than in the RLA group (1 d vs. 2 d, P = 0.027; 1 d vs. 2 d, P = 0.034; 3 d vs. 5 d, P = 0.002; 5 d vs. 6 d, P = 0.02, respectively). ('shorter', 'NegReg', (128, 135)) ('RLA', 'Chemical', '-', (167, 170)) ('RLA', 'Chemical', '-', (145, 148)) ('RARLA', 'Chemical', '-', (143, 148)) ('RARLA', 'Var', (143, 148)) 32271 33028297 The time to oral food intake, the time to ambulation, the time to removal of the drainage tube and postoperative hospitalization days were shorter in the RARLA group than in the RLA group, and the difference was statistically significant (1 d vs 2 d, P = 0.027; 1 d vs 2 d, P = 0.034; 4 d vs 5 d, P = 0.002 and 5 d vs 6 d, P = 0.02, respectively). ('RLA', 'Chemical', '-', (156, 159)) ('RLA', 'Chemical', '-', (178, 181)) ('RARLA', 'Chemical', '-', (154, 159)) ('RARLA', 'Var', (154, 159)) ('shorter', 'NegReg', (139, 146)) 32280 33028297 An exciting finding in our study is that the RARLA group had less blood loss and a lower transfusion rate than the RLA group, although no statistically significant difference in the intraoperative transfusion rate was identified between the two groups. ('blood loss', 'Disease', 'MESH:D006473', (66, 76)) ('RARLA', 'Chemical', '-', (45, 50)) ('RARLA', 'Var', (45, 50)) ('transfusion rate', 'MPA', (89, 105)) ('blood loss', 'Disease', (66, 76)) ('lower', 'NegReg', (83, 88)) ('RLA', 'Chemical', '-', (47, 50)) ('less', 'NegReg', (61, 65)) ('RLA', 'Chemical', '-', (115, 118)) 32289 33028297 Compared with RLA for the treatment of large PHEOs, RARLA can result in more stable intraoperative haemodynamics, less intraoperative blood loss, and a faster postoperative recovery while achieving a similar BP improvement rate. ('PHEO', 'Phenotype', 'HP:0002666', (45, 49)) ('RLA', 'Chemical', '-', (54, 57)) ('RLA', 'Chemical', '-', (14, 17)) ('intraoperative blood loss', 'Disease', (119, 144)) ('intraoperative blood loss', 'Disease', 'MESH:D016063', (119, 144)) ('PHEOs', 'Phenotype', 'HP:0002666', (45, 50)) ('more', 'PosReg', (72, 76)) ('RARLA', 'Chemical', '-', (52, 57)) ('RARLA', 'Var', (52, 57)) 32295 31479526 PPGL related to succinate dehydrogenase subunits mutations (SDHx mutations) are less differentiated than other subgroups and therefore may lack to concentrate 18F-FDOPA, a precursor of catecholamines biosynthesis. ('SDHx', 'Gene', (60, 64)) ('concentrate 18F-FDOPA', 'MPA', (147, 168)) ('mutations', 'Var', (49, 58)) ('18F-FDOPA', 'Chemical', '-', (159, 168)) ('lack to concentrate', 'Phenotype', 'HP:0031987', (139, 158)) ('catecholamines', 'Chemical', 'MESH:D002395', (185, 199)) ('succinate', 'Chemical', 'MESH:D019802', (16, 25)) ('lack', 'NegReg', (139, 143)) ('PPGL', 'Chemical', '-', (0, 4)) 32304 31479526 One of the most frequent and fascinating causes is linked to mutations in the SDH genes (SDHA-D and SDHAF2, collectively named SDHx) that encode for subunits of the succinate dehydrogenase (SDH), a key respiratory enzyme complex that converts succinate to fumarate in tricarboxylic acid (TCA) cycle and also functions in the mitochondrial electron transport chain. ('SDH', 'Gene', (78, 81)) ('SDHAF2', 'Gene', (100, 106)) ('fumarate', 'Chemical', 'MESH:D005650', (256, 264)) ('mutations', 'Var', (61, 70)) ('succinate', 'Chemical', 'MESH:D019802', (243, 252)) ('succinate', 'Chemical', 'MESH:D019802', (165, 174)) ('SDHA-D', 'Gene', (89, 95)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (268, 286)) ('functions', 'Reg', (308, 317)) ('TCA', 'Chemical', 'MESH:D014233', (288, 291)) 32305 31479526 SDHx mutations result in SDH deficiency, disruption of the TCA cycle with subsequent accumulation of succinate and metabolic reprogramming that promotes tumorigenesis. ('succinate', 'Chemical', 'MESH:D019802', (101, 110)) ('metabolic reprogramming', 'CPA', (115, 138)) ('result in', 'Reg', (15, 24)) ('tumorigenesis', 'CPA', (153, 166)) ('TCA cycle', 'MPA', (59, 68)) ('promotes', 'PosReg', (144, 152)) ('mutations', 'Var', (5, 14)) ('TCA', 'Chemical', 'MESH:D014233', (59, 62)) ('SDHx', 'Gene', (0, 4)) ('SDH deficiency', 'Disease', (25, 39)) ('disruption', 'Reg', (41, 51)) ('SDH deficiency', 'Disease', 'MESH:D007153', (25, 39)) 32308 31479526 In the setting of PPGL, 18F-fluorodeoxyglucose (18F-FDG) avidity was found to be associated to SDHx mutations, possibly due to the effects of succinate on stabilization of hypoxia-inducible factors and/or on microenvironment metabolism. ('succinate', 'Chemical', 'MESH:D019802', (142, 151)) ('mutations', 'Var', (100, 109)) ('hypoxia', 'Disease', 'MESH:D000860', (172, 179)) ('SDHx', 'Gene', (95, 99)) ('18F-fluorodeoxyglucose', 'Chemical', 'MESH:D019788', (24, 46)) ('hypoxia', 'Disease', (172, 179)) ('18F-FDG', 'Chemical', 'MESH:D019788', (48, 55)) ('PPGL', 'Chemical', '-', (18, 22)) ('associated', 'Reg', (81, 91)) 32310 31479526 18F-FDOPA PET/CT was found to be a sensitive imaging tool for sporadic and SDHx-related HNPGL (mostly linked to SDHD mutations). ('mutations', 'Var', (117, 126)) ('HNPGL', 'Disease', (88, 93)) ('SDHD', 'Disease', 'None', (112, 116)) ('HNPGL', 'Phenotype', 'HP:0002864', (88, 93)) ('18F-FDOPA', 'Chemical', '-', (0, 9)) ('SDHD', 'Disease', (112, 116)) ('linked', 'Reg', (102, 108)) 32323 31479526 Thirty three patients (40%) carried mutations in one of the SDH genes (5 SDHB, 8 SDHC, 20 SDHD). ('SDH', 'Gene', (60, 63)) ('SDHD', 'Disease', (90, 94)) ('mutations', 'Var', (36, 45)) ('SDHB', 'Disease', (73, 77)) ('SDHD', 'Disease', 'None', (90, 94)) 32328 31479526 SDHC-related HNPGL was found to have higher 18F-FDOPA-derived uptake parameters compared to their non-SDHx counterparts (P = .033 for SUVmax, P = .031 for SUVmean and P = .004 for TL) and higher TL compared to SDHD (P = .033; Figure 2). ('SDHD', 'Disease', (210, 214)) ('18F-FDOPA-derived uptake parameters', 'MPA', (44, 79)) ('higher', 'PosReg', (37, 43)) ('SDHC-related', 'Var', (0, 12)) ('higher', 'PosReg', (188, 194)) ('TL', 'Chemical', '-', (195, 197)) ('18F-FDOPA', 'Chemical', '-', (44, 53)) ('SDHD', 'Disease', 'None', (210, 214)) ('HNPGL', 'Phenotype', 'HP:0002864', (13, 18)) ('TL', 'Chemical', '-', (180, 182)) 32329 31479526 In the three metastatic patients included, the tumours exhibited highly elevated uptake values with SUVmax, SUVmean, MTV42% and TL of 33.5 +- 34.3; 20 +- 20.4, 2.5 +- 2.5 and 33.7 +- 39.6, respectively. ('elevated', 'PosReg', (72, 80)) ('TL', 'Chemical', '-', (128, 130)) ('tumours', 'Phenotype', 'HP:0002664', (47, 54)) ('uptake', 'MPA', (81, 87)) ('tumours', 'Disease', 'MESH:D009369', (47, 54)) ('MTV42%', 'Var', (117, 123)) ('tumours', 'Disease', (47, 54)) ('tumour', 'Phenotype', 'HP:0002664', (47, 53)) 32337 31479526 The inter- and intra-patient differences observed on 18F-FDOPA PET/CT in SDHx mutation carriers is still unexplainable. ('mutation', 'Var', (78, 86)) ('SDHx', 'Gene', (73, 77)) ('18F-FDOPA', 'Chemical', '-', (53, 62)) 32338 31479526 The presented data suggest that presence of SDH mutations is not enough to drive the 18F-FDOPA imaging phenotype in all PPGL but can influence tumour metabolism in a certain cell lineage of tumours equipped with catecholamine biosynthesis/storage/turnover. ('drive', 'Reg', (75, 80)) ('SDH', 'Gene', (44, 47)) ('tumour metabolism', 'Disease', 'MESH:D009369', (143, 160)) ('tumour metabolism', 'Disease', (143, 160)) ('tumour', 'Phenotype', 'HP:0002664', (143, 149)) ('influence', 'Reg', (133, 142)) ('tumours', 'Disease', 'MESH:D009369', (190, 197)) ('tumours', 'Disease', (190, 197)) ('PPGL', 'Chemical', '-', (120, 124)) ('tumour', 'Phenotype', 'HP:0002664', (190, 196)) ('tumours', 'Phenotype', 'HP:0002664', (190, 197)) ('18F-FDOPA', 'Chemical', '-', (85, 94)) ('18F-FDOPA imaging phenotype', 'MPA', (85, 112)) ('catecholamine', 'Chemical', 'MESH:D002395', (212, 225)) ('mutations', 'Var', (48, 57)) 32339 31479526 It was shown that SDHx mutated tumours are classically associated with lack of uptake of specific radiopharmaceuticals such as 18F-FDOPA or 123I-MIBG. ('uptake', 'MPA', (79, 85)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (140, 149)) ('tumour', 'Phenotype', 'HP:0002664', (31, 37)) ('tumours', 'Phenotype', 'HP:0002664', (31, 38)) ('mutated', 'Var', (23, 30)) ('SDHx', 'Gene', (18, 22)) ('18F-FDOPA', 'Chemical', '-', (127, 136)) ('tumours', 'Disease', 'MESH:D009369', (31, 38)) ('tumours', 'Disease', (31, 38)) 32382 32095152 A new marker, Tyrosine hydroxylase, as an enzyme in catecholamine synthetic pathway is also positive in PGs. ('positive', 'Reg', (92, 100)) ('PGs', 'Var', (104, 107)) ('Tyrosine hydroxylase', 'Gene', '7054', (14, 34)) ('Tyrosine hydroxylase', 'Gene', (14, 34)) ('catecholamine', 'Chemical', 'MESH:D002395', (52, 65)) ('PGs', 'Chemical', 'MESH:D010715', (104, 107)) ('PG', 'Phenotype', 'HP:0002668', (104, 106)) 32394 31579262 The Impact Of Succinate Dehydrogenase Gene (SDH) Mutations In Renal Cell Carcinoma (RCC): A Systematic Review Renal cell cancer (RCC) syndrome is linked to Krebs cycle compartments and their coding genes' alterations like succinate dehydrogenase genes (SDHx). ('SDH', 'Gene', (44, 47)) ('cancer', 'Phenotype', 'HP:0002664', (121, 127)) ('RCC', 'Disease', (84, 87)) ('RCC', 'Disease', 'MESH:D002292', (84, 87)) ('RCC', 'Disease', (129, 132)) ('SDH', 'Gene', '6390', (253, 256)) ('Renal Cell Carcinoma', 'Disease', (62, 82)) ('Mutations', 'Var', (49, 58)) ('succinate dehydrogenase', 'Gene', (222, 245)) ('Succinate Dehydrogenase', 'Gene', (14, 37)) ('Renal cell cancer (RCC) syndrome', 'Disease', 'MESH:D002292', (110, 142)) ('Renal Cell Carcinoma', 'Disease', 'MESH:D002292', (62, 82)) ('SDH', 'Gene', '6390', (44, 47)) ('Succinate Dehydrogenase', 'Gene', '6390', (14, 37)) ('RCC', 'Disease', 'MESH:D002292', (129, 132)) ('Carcinoma', 'Phenotype', 'HP:0030731', (73, 82)) ('Renal cell cancer', 'Phenotype', 'HP:0005584', (110, 127)) ('SDH', 'Gene', (253, 256)) ('Renal Cell Carcinoma', 'Phenotype', 'HP:0005584', (62, 82)) ('succinate dehydrogenase', 'Gene', '6390', (222, 245)) 32395 31579262 Here we present a systematic review of the SDH genes' mutations and their impact on both RCC diagnosis and prognosis. ('SDH', 'Gene', (43, 46)) ('mutations', 'Var', (54, 63)) ('RCC', 'Disease', (89, 92)) ('SDH', 'Gene', '6390', (43, 46)) ('RCC', 'Disease', 'MESH:D002292', (89, 92)) 32396 31579262 This systematic review includes any study in which tissue samples of RCC are considered in correlation with the SDHx mutations, microsatellite instability (MSI), and protein expression. ('RCC', 'Disease', 'MESH:D002292', (69, 72)) ('mutations', 'Var', (117, 126)) ('RCC', 'Disease', (69, 72)) ('SDH', 'Gene', (112, 115)) ('microsatellite instability', 'MPA', (128, 154)) ('SDH', 'Gene', '6390', (112, 115)) ('MSI', 'Disease', 'MESH:D053842', (156, 159)) ('MSI', 'Disease', (156, 159)) 32397 31579262 The final selected nineteen studies investigating the SDHx role in RCC tumor genesis were included, among which fifteen were mutation analysis, three were just SDHx protein expression, and two were MSI and mutation analysis studies. ('SDH', 'Gene', (160, 163)) ('mutation analysis', 'Var', (125, 142)) ('MSI', 'Disease', 'MESH:D053842', (198, 201)) ('MSI', 'Disease', (198, 201)) ('RCC', 'Disease', 'MESH:D002292', (67, 70)) ('RCC', 'Disease', (67, 70)) ('tumor', 'Disease', 'MESH:D009369', (71, 76)) ('SDH', 'Gene', '6390', (160, 163)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('SDH', 'Gene', '6390', (54, 57)) ('tumor', 'Disease', (71, 76)) ('SDH', 'Gene', (54, 57)) 32398 31579262 A total of 432 RCC patients were reported by SDH mutations, and 64 patients with MSI and SDH expression change were reported in 514 surgically resected renal epithelial tumors. ('MSI', 'Disease', 'MESH:D053842', (81, 84)) ('SDH', 'Gene', (89, 92)) ('MSI', 'Disease', (81, 84)) ('patients', 'Species', '9606', (19, 27)) ('mutations', 'Var', (49, 58)) ('patients', 'Species', '9606', (67, 75)) ('RCC', 'Disease', 'MESH:D002292', (15, 18)) ('RCC', 'Disease', (15, 18)) ('tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('renal epithelial tumors', 'Disease', (152, 175)) ('SDH', 'Gene', (45, 48)) ('tumors', 'Phenotype', 'HP:0002664', (169, 175)) ('SDH', 'Gene', '6390', (89, 92)) ('renal epithelial tumors', 'Disease', 'MESH:D007680', (152, 175)) ('SDH', 'Gene', '6390', (45, 48)) 32399 31579262 The most common mutation was the single nucleotide variant rs772551056 (c.137G>A) of SDHB. ('c.137G>A', 'Var', (72, 80)) ('common', 'Reg', (9, 15)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('rs772551056 (c.137G>A', 'Var', (59, 80)) ('rs772551056', 'Mutation', 'rs772551056', (59, 70)) ('c.137G>A', 'Mutation', 'rs772551056', (72, 80)) 32400 31579262 For SDHC, c.380A>G presented in 48 RCC patients, and for SDHA a novel germline mutation c.2T>C: p.M1T in an occasional case of gastrointestinal stromal tumor intricate with RCC. ('RCC', 'Disease', 'MESH:D002292', (35, 38)) ('RCC', 'Disease', (35, 38)) ('RCC', 'Disease', (173, 176)) ('SDHC', 'Gene', (4, 8)) ('c.380A>G', 'Var', (10, 18)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (127, 157)) ('patients', 'Species', '9606', (39, 47)) ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('RCC', 'Disease', 'MESH:D002292', (173, 176)) ('SDHC', 'Gene', '6391', (4, 8)) ('c.2T>C: p.M1T', 'Var', (88, 101)) ('c.380A>G', 'Mutation', 'c.380A>G', (10, 18)) ('SDHA', 'Gene', '6389', (57, 61)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (127, 157)) ('c.2T>C', 'Mutation', 'rs864622194', (88, 94)) ('gastrointestinal stromal tumor', 'Disease', (127, 157)) ('SDHA', 'Gene', (57, 61)) ('p.M1T', 'Mutation', 'rs864622194', (96, 101)) 32402 31579262 It was shown recently that the succinate dehydrogenase gene variations can provide this diagnostic and prognostic biomarker. ('succinate dehydrogenase', 'Gene', (31, 54)) ('succinate dehydrogenase', 'Gene', '6390', (31, 54)) ('variations', 'Var', (60, 70)) 32403 31579262 For this purpose, SDHB rs772551056 associated with its protein expression alterations can be taken into account. ('SDHB', 'Gene', (18, 22)) ('rs772551056', 'Var', (23, 34)) ('protein expression alterations', 'MPA', (55, 85)) ('rs772551056', 'Mutation', 'rs772551056', (23, 34)) ('SDHB', 'Gene', '6390', (18, 22)) 32404 31579262 It is possible that a novel mutation of SDHA (c.2T>C: p.M1T) can provide evidence of GIST associated with RCC as well. ('c.2T>C:', 'Var', (46, 53)) ('SDHA', 'Gene', '6389', (40, 44)) ('p.M1T', 'Mutation', 'rs864622194', (54, 59)) ('associated', 'Reg', (90, 100)) ('SDHA', 'Gene', (40, 44)) ('RCC', 'Disease', (106, 109)) ('c.2T>C', 'Mutation', 'rs864622194', (46, 52)) ('RCC', 'Disease', 'MESH:D002292', (106, 109)) 32413 31579262 Patients with mutations in the SDH genes are under the risk of autonomic nervous system tumors like pheochromocytomas and paragangliomas (PPGLs), both head and neck, and in the thorax and abdomen, gastrointestinal stromal tumors (GISTs), and renal cell carcinoma (RCC). ('pheochromocytomas', 'Phenotype', 'HP:0002666', (100, 117)) ('GISTs', 'Disease', 'MESH:D046152', (230, 235)) ('renal cell carcinoma', 'Disease', (242, 262)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (242, 262)) ('tumor', 'Phenotype', 'HP:0002664', (222, 227)) ('autonomic nervous system tumors like pheochromocytomas and paragangliomas', 'Disease', 'MESH:D009423', (63, 136)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (100, 116)) ('GISTs', 'Disease', (230, 235)) ('SDH', 'Gene', '6390', (31, 34)) ('carcinoma', 'Phenotype', 'HP:0030731', (253, 262)) ('Patients', 'Species', '9606', (0, 8)) ('PGL', 'Disease', 'MESH:D010235', (139, 142)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (197, 228)) ('mutations', 'Var', (14, 23)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (197, 228)) ('RCC', 'Disease', (264, 267)) ('SDH', 'Gene', (31, 34)) ('tumors', 'Phenotype', 'HP:0002664', (88, 94)) ('nervous system tumors', 'Phenotype', 'HP:0004375', (73, 94)) ('RCC', 'Disease', 'MESH:D002292', (264, 267)) ('renal cell carcinoma', 'Disease', 'MESH:D002292', (242, 262)) ('paragangliomas', 'Phenotype', 'HP:0002668', (122, 136)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (197, 227)) ('paraganglioma', 'Phenotype', 'HP:0002668', (122, 135)) ('PGL', 'Disease', (139, 142)) ('gastrointestinal stromal tumors', 'Disease', (197, 228)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('tumors', 'Phenotype', 'HP:0002664', (222, 228)) 32415 31579262 Succinate dehydrogenase mutation in PPGL and GIST tumor cells had a microscopic result of predominantly epithelioid morphology, and epithelioid morphology, but not in RCC. ('Succinate dehydrogenase', 'Gene', (0, 23)) ('PGL', 'Disease', (37, 40)) ('tumor', 'Disease', 'MESH:D009369', (50, 55)) ('epithelioid morphology', 'CPA', (104, 126)) ('PGL', 'Disease', 'MESH:D010235', (37, 40)) ('RCC', 'Disease', 'MESH:D002292', (167, 170)) ('RCC', 'Disease', (167, 170)) ('mutation', 'Var', (24, 32)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('epithelioid morphology', 'CPA', (132, 154)) ('Succinate dehydrogenase', 'Gene', '6390', (0, 23)) ('tumor', 'Disease', (50, 55)) 32417 31579262 RCCs with additional histologic presence have been described in patients with germline mutations of succinate dehydrogenase genes, contrary to some limited histological types of RCCs with no succinate dehydrogenase mutation. ('RCC', 'Disease', (0, 3)) ('patients', 'Species', '9606', (64, 72)) ('succinate dehydrogenase', 'Gene', (100, 123)) ('succinate dehydrogenase', 'Gene', '6390', (100, 123)) ('succinate dehydrogenase', 'Gene', '6390', (191, 214)) ('RCC', 'Disease', 'MESH:D002292', (178, 181)) ('RCC', 'Disease', (178, 181)) ('succinate dehydrogenase', 'Gene', (191, 214)) ('RCC', 'Disease', 'MESH:D002292', (0, 3)) ('mutations', 'Var', (87, 96)) 32419 31579262 Interestingly, germline mutations of the genes coding for the succinate dehydrogenase subunits (SDHB, SDHC, and SDHD) have been identified in patients with a combination of gastrointestinal stromal tumors (GISTs) and paraganglioma (PGL). ('SDHC', 'Gene', (102, 106)) ('succinate dehydrogenase', 'Gene', '6390', (62, 85)) ('SDHD', 'Gene', '6392', (112, 116)) ('tumor', 'Phenotype', 'HP:0002664', (198, 203)) ('mutations', 'Var', (24, 33)) ('patients', 'Species', '9606', (142, 150)) ('identified', 'Reg', (128, 138)) ('SDHD', 'Gene', (112, 116)) ('GISTs', 'Disease', 'MESH:D046152', (206, 211)) ('PGL', 'Disease', 'MESH:D010235', (232, 235)) ('paraganglioma', 'Disease', (217, 230)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (173, 204)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (173, 204)) ('paraganglioma', 'Disease', 'MESH:D010235', (217, 230)) ('SDHC', 'Gene', '6391', (102, 106)) ('succinate dehydrogenase', 'Gene', (62, 85)) ('GISTs', 'Disease', (206, 211)) ('SDHB', 'Gene', '6390', (96, 100)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (173, 203)) ('PGL', 'Disease', (232, 235)) ('paraganglioma', 'Phenotype', 'HP:0002668', (217, 230)) ('gastrointestinal stromal tumors', 'Disease', (173, 204)) ('tumors', 'Phenotype', 'HP:0002664', (198, 204)) ('SDHB', 'Gene', (96, 100)) 32420 31579262 The co-occurrence of RCC with paraganglioma or pheochromocytoma suggested a succinate dehydrogenase gene mutation presence. ('paraganglioma', 'Phenotype', 'HP:0002668', (30, 43)) ('paraganglioma', 'Disease', (30, 43)) ('succinate dehydrogenase', 'Gene', '6390', (76, 99)) ('pheochromocytoma', 'Disease', (47, 63)) ('succinate dehydrogenase', 'Gene', (76, 99)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (47, 63)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (47, 63)) ('mutation presence', 'Var', (105, 122)) ('paraganglioma', 'Disease', 'MESH:D010235', (30, 43)) ('RCC', 'Disease', 'MESH:D002292', (21, 24)) ('RCC', 'Disease', (21, 24)) 32422 31579262 In spite of the fact that recently the focus of scientists is on RCC genetic and epigenetic modifications, knowledge of the clinical features and management of patients associated with the SDH mutations is limited. ('patients', 'Species', '9606', (160, 168)) ('SDH', 'Gene', '6390', (189, 192)) ('SDH', 'Gene', (189, 192)) ('mutations', 'Var', (193, 202)) ('RCC', 'Disease', 'MESH:D002292', (65, 68)) ('RCC', 'Disease', (65, 68)) 32423 31579262 The current systematic review study is run with the purpose of delivering the first meticulous summary of all the available primary research over the SDH mutations, expression, and microsatellite instability (MSI) in RCC management and screening recommendations. ('SDH', 'Gene', (150, 153)) ('RCC', 'Disease', (217, 220)) ('RCC', 'Disease', 'MESH:D002292', (217, 220)) ('MSI', 'Disease', 'MESH:D053842', (209, 212)) ('MSI', 'Disease', (209, 212)) ('SDH', 'Gene', '6390', (150, 153)) ('mutations', 'Var', (154, 163)) 32427 31579262 Studies were excluded if they: 1) analyzed SDHx mutations or expression in animals (in vivo studies); 2) studied them in cell culture (in vitro studies); or (3) did not have an appropriate explanation of selected case groups. ('mutations', 'Var', (48, 57)) ('SDH', 'Gene', '6390', (43, 46)) ('expression', 'MPA', (61, 71)) ('SDH', 'Gene', (43, 46)) 32430 31579262 A total of sixteen studies were mainly focused on SDHx mutations, three studied the SDHx protein expression without mutation analysis, and two targeted SDHx MSI with or without mutation (Table 1). ('mutations', 'Var', (55, 64)) ('MSI', 'Disease', 'MESH:D053842', (157, 160)) ('MSI', 'Disease', (157, 160)) ('SDH', 'Gene', '6390', (152, 155)) ('SDH', 'Gene', '6390', (50, 53)) ('SDH', 'Gene', '6390', (84, 87)) ('SDH', 'Gene', (152, 155)) ('SDH', 'Gene', (50, 53)) ('SDH', 'Gene', (84, 87)) 32433 31579262 In these studies, several mutations of SDHB were checked including exonic mutations (c.137G>A), splice site acceptor or donor mutations (c.72+1G T), exon 1 splice acceptor site or c.268C>T (p. Arg90X) in exon 3 splice site mutation, and (c.136C>T Stop) mutation of stop codons which are resulting in truncated inactive forms of the protein. ('Arg90X', 'Var', (193, 199)) ('SDHB', 'Gene', '6390', (39, 43)) ('Arg90X', 'SUBSTITUTION', 'None', (193, 199)) ('c.137G>A', 'Mutation', 'rs772551056', (85, 93)) ('c.72+1G T', 'Var', (137, 146)) ('SDHB', 'Gene', (39, 43)) ('donor', 'Species', '9606', (120, 125)) ('c.136C>T Stop', 'Var', (238, 251)) ('c.268C>T', 'Mutation', 'c.268C>T', (180, 188)) ('c.137G>A', 'Var', (85, 93)) ('c.136C>T', 'Mutation', 'c.136C>T', (238, 246)) 32434 31579262 Five studies were mainly focused on SDHC in which loss of heterozygosity (LOH) in two telomeric regions (D3S369, D3S1597) and five centromeric regions (D3SVHL3, D3S1337, D3SVHL7, D3SVHL8, D3S3611) more than c.380A>G mutations were tested. ('D3SVHL3', 'Var', (152, 159)) ('D3S1337', 'Var', (161, 168)) ('D3S369', 'Var', (105, 111)) ('D3S1597', 'Var', (113, 120)) ('loss', 'NegReg', (50, 54)) ('c.380A>G', 'Var', (207, 215)) ('D3SVHL7', 'Var', (170, 177)) ('D3SVHL8', 'Var', (179, 186)) ('D3S3611', 'Var', (188, 195)) ('SDHC', 'Gene', (36, 40)) ('D3S1597', 'Chemical', 'MESH:C571787', (113, 120)) ('c.380A>G', 'Mutation', 'c.380A>G', (207, 215)) ('SDHC', 'Gene', '6391', (36, 40)) 32435 31579262 Especially, in an aggressive example of the Warburg Effect in succinate dehydrogenase kidney cancer (SDH-RCC), the germline SDHC mutation (R133X) (NM_003001.3-c.397C>T (p. Arg133Ter)) was identified. ('succinate dehydrogenase', 'Gene', '6390', (62, 85)) ('SDHC', 'Gene', (124, 128)) ('R133X', 'Mutation', 'p.R133X', (139, 144)) ('Arg133Ter', 'Var', (172, 181)) ('R133X) (NM_003001.3-c.397C>T', 'Var', (139, 167)) ('dehydrogenase kidney cancer', 'Disease', 'MESH:D007680', (72, 99)) ('NM_003001.3-c.397C>T', 'Var', (147, 167)) ('RCC', 'Disease', (105, 108)) ('dehydrogenase kidney cancer', 'Disease', (72, 99)) ('c.397C>T', 'Mutation', 'c.397C>T', (159, 167)) ('SDH', 'Gene', '6390', (124, 127)) ('succinate dehydrogenase', 'Gene', (62, 85)) ('SDH', 'Gene', '6390', (101, 104)) ('RCC', 'Disease', 'MESH:D002292', (105, 108)) ('SDHC', 'Gene', '6391', (124, 128)) ('Arg133Ter', 'SUBSTITUTION', 'None', (172, 181)) ('cancer', 'Phenotype', 'HP:0002664', (93, 99)) ('kidney cancer', 'Phenotype', 'HP:0009726', (86, 99)) ('SDH', 'Gene', (124, 127)) ('SDH', 'Gene', (101, 104)) 32436 31579262 Two studies were related to SDHA (c.2T>C: p.M1T/rs864622194) resulting in substitution of Methionine with Threonine in a NM_006493.2:c.2T>C missense variant that change the amino acid sequence in protein and resulted in non-functional protein (https://www.ncbi.nlm.nih.gov/clinvar/variation/219649/). ('c.2T>C', 'Mutation', 'rs864622194', (133, 139)) ('amino acid sequence in protein', 'MPA', (173, 203)) ('resulted in', 'Reg', (208, 219)) ('non-functional protein', 'MPA', (220, 242)) ('c.2T>C', 'Mutation', 'rs864622194', (34, 40)) ('substitution', 'Var', (74, 86)) ('NM_006493.2:c.2T>C', 'Var', (121, 139)) ('SDHA', 'Gene', (28, 32)) ('NM_006493.2:c.2T>C', 'SUBSTITUTION', 'None', (121, 139)) ('rs864622194', 'Mutation', 'rs864622194', (48, 59)) ('p.M1T', 'Mutation', 'rs864622194', (42, 47)) ('Threonine', 'Chemical', 'MESH:C061951', (106, 115)) ('Methionine', 'Chemical', 'MESH:D008715', (90, 100)) ('SDHA', 'Gene', '6389', (28, 32)) ('change', 'Reg', (162, 168)) 32438 31579262 Except for one study in sporadic RCC indicating no mutations in the three FH, FIH-1, and SDHB, others mainly suggested early-onset RCC with unusual histology (e.g., solid) must be observed to take an extended family history and SDHB mutant-related RCC in the way of better diagnosis and prognosis. ('FIH-1', 'Gene', '55662', (78, 83)) ('FIH-1', 'Gene', (78, 83)) ('RCC', 'Disease', 'MESH:D002292', (248, 251)) ('RCC', 'Disease', (248, 251)) ('SDHB', 'Gene', '6390', (228, 232)) ('RCC', 'Disease', 'MESH:D002292', (131, 134)) ('RCC', 'Disease', (131, 134)) ('RCC', 'Disease', 'MESH:D002292', (33, 36)) ('RCC', 'Disease', (33, 36)) ('mutant-related', 'Var', (233, 247)) ('SDHB', 'Gene', (228, 232)) ('SDHB', 'Gene', '6390', (89, 93)) ('FH', 'Gene', '2271', (74, 76)) ('SDHB', 'Gene', (89, 93)) 32440 31579262 The most common mutation was the single nucleotide variant rs772551056 (c.137G>A) of SDHB with genomic location Chr1: 17044824 resulting in protein change R46Q which was reported in 106 RCC patients. ('R46Q', 'Mutation', 'rs772551056', (155, 159)) ('R46Q', 'Var', (155, 159)) ('patients', 'Species', '9606', (190, 198)) ('RCC', 'Disease', 'MESH:D002292', (186, 189)) ('RCC', 'Disease', (186, 189)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('protein change', 'MPA', (140, 154)) ('rs772551056', 'Mutation', 'rs772551056', (59, 70)) ('c.137G>A', 'Mutation', 'rs772551056', (72, 80)) 32441 31579262 After that, two mutations of c.32G>A and c.136C>T Stop were the most with 79 reported RCC patients. ('c.32G>A', 'Var', (29, 36)) ('c.136C>T Stop', 'Var', (41, 54)) ('c.32G>A', 'Mutation', 'c.32G>A', (29, 36)) ('c.136C>T', 'Mutation', 'c.136C>T', (41, 49)) ('RCC', 'Disease', 'MESH:D002292', (86, 89)) ('RCC', 'Disease', (86, 89)) ('patients', 'Species', '9606', (90, 98)) 32442 31579262 The mutation of c.423+1G>A was in 44 RCC patients and c.72+1G T in 20 patients. ('c.72+1G T', 'Var', (54, 63)) ('patients', 'Species', '9606', (70, 78)) ('c.423+1G>A', 'Mutation', 'c.423+1G>A', (16, 26)) ('RCC', 'Disease', 'MESH:D002292', (37, 40)) ('RCC', 'Disease', (37, 40)) ('patients', 'Species', '9606', (41, 49)) ('c.423+1G>A', 'Var', (16, 26)) 32443 31579262 The SDHC c.380A>G (p. His127Arg) was in 48 RCC, 18 PPGLs, and 11 GIST. ('c.380A>G', 'Mutation', 'c.380A>G', (9, 17)) ('PGL', 'Disease', (52, 55)) ('SDHC', 'Gene', (4, 8)) ('PGL', 'Disease', 'MESH:D010235', (52, 55)) ('SDHC', 'Gene', '6391', (4, 8)) ('His127Arg', 'SUBSTITUTION', 'None', (22, 31)) ('c.380A>G', 'Var', (9, 17)) ('RCC', 'Disease', 'MESH:D002292', (43, 46)) ('RCC', 'Disease', (43, 46)) ('His127Arg', 'Var', (22, 31)) 32444 31579262 The rs786201095 (c.380T>G (p. Ile127Ser)) with chromosome location Chr1: 17028643 is the common mutation found in RCC in addition to GIST and PPGL. ('c.380T>G', 'Var', (17, 25)) ('RCC', 'Disease', (114, 117)) ('RCC', 'Disease', 'MESH:D002292', (114, 117)) ('PGL', 'Disease', (143, 146)) ('Ile127Ser', 'SUBSTITUTION', 'None', (30, 39)) ('PGL', 'Disease', 'MESH:D010235', (143, 146)) ('Ile127Ser', 'Var', (30, 39)) ('c.380T>G', 'Mutation', 'rs786201095', (17, 25)) ('rs786201095', 'Mutation', 'rs786201095', (4, 15)) 32446 31579262 The novel germline mutation of chromosome X rs864622194 (c.2T>C: p.M1T) with genomic locus ChrX: 103776997 in SDHA was recognized in a rare case of gastrointestinal stromal tumor complicated with RCC. ('c.2T>C', 'Mutation', 'rs864622194', (57, 63)) ('p.M1T', 'Mutation', 'rs864622194', (65, 70)) ('RCC', 'Disease', (196, 199)) ('SDHA', 'Gene', (110, 114)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (148, 178)) ('tumor', 'Phenotype', 'HP:0002664', (173, 178)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (148, 178)) ('RCC', 'Disease', 'MESH:D002292', (196, 199)) ('rs864622194', 'Var', (44, 55)) ('rs864622194', 'Mutation', 'rs864622194', (44, 55)) ('gastrointestinal stromal tumor', 'Disease', (148, 178)) ('SDHA', 'Gene', '6389', (110, 114)) 32451 31579262 Recently the importance of SDH subunit mutations has been highlighted in different malignancies including RCC. ('malignancies', 'Disease', 'MESH:D009369', (83, 95)) ('SDH', 'Gene', (27, 30)) ('mutations', 'Var', (39, 48)) ('RCC', 'Disease', (106, 109)) ('malignancies', 'Disease', (83, 95)) ('SDH', 'Gene', '6390', (27, 30)) ('RCC', 'Disease', 'MESH:D002292', (106, 109)) 32456 31579262 Common genetic alterations of SDHB consist of a nonsense mutation (c.268C>T p.Arg90X), four missense mutations (c.137G>A p.Arg46Gln, c.286G>A p.Gly96Ser, c.379A>C p.Ile127Leu, c.689G>A p.Arg230His), two splice site altering mutations (c.286+2T>A, c.541-2A>G), and three complete deletions of the first exon of SDHB. ('SDHB', 'Gene', '6390', (310, 314)) ('c.286G>A', 'SUBSTITUTION', 'None', (133, 141)) ('c.379A>C', 'SUBSTITUTION', 'None', (154, 162)) ('p.Arg230His', 'Var', (185, 196)) ('p.Gly96Ser', 'SUBSTITUTION', 'None', (142, 152)) ('p.Arg46Gln', 'SUBSTITUTION', 'None', (121, 131)) ('SDHB', 'Gene', (310, 314)) ('p.Ile127Leu', 'Var', (163, 174)) ('c.286+2T>A', 'Var', (235, 245)) ('SDHB', 'Gene', '6390', (30, 34)) ('c.286+2T>A', 'Mutation', 'c.286+2T>A', (235, 245)) ('c.541-2A>G', 'Mutation', 'c.541-2A>G', (247, 257)) ('p.Ile127Leu', 'SUBSTITUTION', 'None', (163, 174)) ('c.689G>A', 'SUBSTITUTION', 'None', (176, 184)) ('p.Arg46Gln', 'Var', (121, 131)) ('c.379A>C', 'Var', (154, 162)) ('c.689G>A', 'Var', (176, 184)) ('c.137G>A', 'SUBSTITUTION', 'None', (112, 120)) ('c.137G>A', 'Var', (112, 120)) ('p.Gly96Ser', 'Var', (142, 152)) ('SDHB', 'Gene', (30, 34)) ('p.Arg90X', 'SUBSTITUTION', 'None', (76, 84)) ('c.268C>T', 'SUBSTITUTION', 'None', (67, 75)) ('c.268C>T', 'Var', (67, 75)) ('p.Arg230His', 'SUBSTITUTION', 'None', (185, 196)) ('c.286G>A', 'Var', (133, 141)) ('p.Arg90X', 'Var', (76, 84)) 32457 31579262 The mutation c.72+1G T which is in the exon 1 splice acceptor site resulting in production of a truncated inactive form of the protein was in RCC with giant mitochondria. ('RCC', 'Disease', 'MESH:D002292', (142, 145)) ('RCC', 'Disease', (142, 145)) ('giant mitochondria', 'Disease', (151, 169)) ('giant mitochondria', 'Disease', 'MESH:C564971', (151, 169)) ('c.72+1G T', 'Var', (13, 22)) 32458 31579262 SDHB mutation results in distinctive morphology of RCC and these RCCs have a respectable prognosis subsequently of whole excision unless there is sarcomatoid dedifferentiation. ('RCC', 'Disease', (51, 54)) ('RCC', 'Disease', 'MESH:D002292', (65, 68)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) ('results in', 'Reg', (14, 24)) ('mutation', 'Var', (5, 13)) ('RCC', 'Disease', 'MESH:D002292', (51, 54)) ('RCC', 'Disease', (65, 68)) 32459 31579262 The involvement of SDHB mutations in RCC recommends that SDHB mutations must be checked when renal tumors are presented in families with other tumors consistent with hereditary paraganglioma syndrome. ('renal tumors', 'Disease', (93, 105)) ('tumors', 'Phenotype', 'HP:0002664', (143, 149)) ('hereditary paraganglioma syndrome', 'Disease', (166, 199)) ('RCC', 'Disease', (37, 40)) ('SDHB', 'Gene', (57, 61)) ('mutations', 'Var', (24, 33)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) ('tumors', 'Disease', (143, 149)) ('renal tumors', 'Phenotype', 'HP:0009726', (93, 105)) ('RCC', 'Disease', 'MESH:D002292', (37, 40)) ('hereditary paraganglioma syndrome', 'Disease', 'MESH:D061325', (166, 199)) ('tumors', 'Phenotype', 'HP:0002664', (99, 105)) ('SDHB', 'Gene', '6390', (19, 23)) ('tumors', 'Disease', 'MESH:D009369', (143, 149)) ('renal tumor', 'Phenotype', 'HP:0009726', (93, 104)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('tumors', 'Disease', (99, 105)) ('SDHB', 'Gene', '6390', (57, 61)) ('SDHB', 'Gene', (19, 23)) ('renal tumors', 'Disease', 'MESH:D007680', (93, 105)) ('paraganglioma', 'Phenotype', 'HP:0002668', (177, 190)) ('tumors', 'Disease', 'MESH:D009369', (99, 105)) 32460 31579262 The two mutations c.541-2A>G (Splice) and c.689G>A (pArg230His) have a role in impairing iron-sulfur cluster delivery and are highlighted in several cancers. ('iron-sulfur cluster delivery', 'MPA', (89, 117)) ('cancers', 'Disease', (149, 156)) ('cancers', 'Phenotype', 'HP:0002664', (149, 156)) ('c.689G>A', 'Var', (42, 50)) ('c.541-2A>G', 'Mutation', 'c.541-2A>G', (18, 28)) ('cancers', 'Disease', 'MESH:D009369', (149, 156)) ('cancer', 'Phenotype', 'HP:0002664', (149, 155)) ('c.541-2A>G', 'Var', (18, 28)) ('c.689G>A', 'Mutation', 'c.689G>A', (42, 50)) ('iron-sulfur', 'Chemical', 'MESH:D013455', (89, 100)) ('impairing', 'NegReg', (79, 88)) ('pArg230His', 'Chemical', 'MESH:C042459', (52, 62)) 32461 31579262 According to our result the most common SDHB mutation was the single nucleotide variant rs772551056 (c.137G>A). ('SDHB', 'Gene', '6390', (40, 44)) ('SDHB', 'Gene', (40, 44)) ('rs772551056 (c.137G>A', 'Var', (88, 109)) ('rs772551056', 'Mutation', 'rs772551056', (88, 99)) ('c.137G>A', 'Mutation', 'rs772551056', (101, 109)) 32463 31579262 Importantly, the c.137G>A (p.Arg46Gln or R46Q) mutation occurs in the first L(I)YR motif of SDHB and can be detected in familial paraganglioma/pheochromocytoma/GIST/renal cell carcinoma tumor syndromes. ('paraganglioma', 'Phenotype', 'HP:0002668', (129, 142)) ('detected', 'Reg', (108, 116)) ('SDHB', 'Gene', '6390', (92, 96)) ('tumor', 'Phenotype', 'HP:0002664', (186, 191)) ('familial paraganglioma/pheochromocytoma/GIST/renal cell carcinoma tumor', 'Disease', 'MESH:C536851', (120, 191)) ('c.137G>A', 'Mutation', 'rs772551056', (17, 25)) ('p.Arg46Gln', 'Mutation', 'rs772551056', (27, 37)) ('SDHB', 'Gene', (92, 96)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (143, 159)) ('R46Q', 'Mutation', 'rs772551056', (41, 45)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (165, 185)) ('R46Q', 'Var', (41, 45)) ('carcinoma', 'Phenotype', 'HP:0030731', (176, 185)) 32466 31579262 Possible succinate-induced modifications contain stabilization of HIF-alpha propyl hydroxylase and hypermethylation of histones and DNA. ('propyl', 'Chemical', 'MESH:C033205', (76, 82)) ('modifications', 'Var', (27, 40)) ('succinate', 'Chemical', 'MESH:D013386', (9, 18)) ('hypermethylation', 'MPA', (99, 115)) ('histones', 'Protein', (119, 127)) ('HIF-alpha', 'Protein', (66, 75)) ('DNA', 'MPA', (132, 135)) ('stabilization', 'MPA', (49, 62)) 32469 31579262 Moreover, the SDHD mutations together with SDHB mutations were reported in familial PCC and HPGL. ('reported', 'Reg', (63, 71)) ('PGL', 'Disease', 'MESH:D010235', (93, 96)) ('SDHB', 'Gene', '6390', (43, 47)) ('PCC', 'Disease', (84, 87)) ('mutations', 'Var', (19, 28)) ('SDHD', 'Gene', '6392', (14, 18)) ('PCC', 'Disease', 'MESH:D010673', (84, 87)) ('SDHB', 'Gene', (43, 47)) ('SDHD', 'Gene', (14, 18)) ('PGL', 'Disease', (93, 96)) 32471 31579262 Germline mutation c.380A>G (p.His127Arg) of SDHC is the important mutation of this gene which is reported as a recurrent biomarker of SDH-deficient GIST and renal carcinoma. ('SDHC', 'Gene', '6391', (44, 48)) ('SDH', 'Gene', (44, 47)) ('c.380A>G', 'Var', (18, 26)) ('carcinoma', 'Phenotype', 'HP:0030731', (163, 172)) ('SDH', 'Gene', (134, 137)) ('SDH', 'Gene', '6390', (44, 47)) ('renal carcinoma', 'Disease', (157, 172)) ('renal carcinoma', 'Disease', 'MESH:D002292', (157, 172)) ('c.380A>G', 'Mutation', 'c.380A>G', (18, 26)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (157, 172)) ('p.His127Arg', 'Mutation', 'p.H127R', (28, 39)) ('SDHC', 'Gene', (44, 48)) ('SDH', 'Gene', '6390', (134, 137)) 32475 31579262 SDHC c.380A>G happens at a conserved protein region through different species and is located at the metal attachment site for iron and in the helical transmembrane topological domain. ('iron', 'Chemical', 'MESH:D007501', (126, 130)) ('SDHC', 'Gene', (0, 4)) ('SDHC', 'Gene', '6391', (0, 4)) ('c.380A>G', 'Var', (5, 13)) ('c.380A>G', 'Mutation', 'c.380A>G', (5, 13)) 32476 31579262 In silico analyses predict that this polymorphism can perhaps change the protein structure and function, and suggested novel mutations in sporadic head and neck paraganglioma and familial paraganglioma and/or pheochromocytoma. ('mutations', 'Var', (125, 134)) ('paraganglioma', 'Phenotype', 'HP:0002668', (188, 201)) ('paraganglioma', 'Phenotype', 'HP:0002668', (161, 174)) ('neck paraganglioma and familial paraganglioma', 'Disease', 'MESH:D010235', (156, 201)) ('change', 'Reg', (62, 68)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (209, 225)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (147, 174)) ('pheochromocytoma', 'Disease', (209, 225)) ('function', 'MPA', (95, 103)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (209, 225)) ('protein structure', 'MPA', (73, 90)) 32477 31579262 Based on the currently available evidence, SDHC c.380A>G can be considered the RCC pathogenic variant. ('SDHC', 'Gene', '6391', (43, 47)) ('RCC', 'Disease', (79, 82)) ('c.380A>G', 'Var', (48, 56)) ('c.380A>G', 'Mutation', 'c.380A>G', (48, 56)) ('RCC', 'Disease', 'MESH:D002292', (79, 82)) ('SDHC', 'Gene', (43, 47)) 32478 31579262 These are conflicting because germline SDHC mutations are comparatively uncommon, so it was supposed that carriers of mutations of the SDHC gene have aspecial risk for head and neck paragangliomas more than a risk for adrenal pheochromocytoma. ('SDHC', 'Gene', '6391', (39, 43)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (168, 195)) ('mutations', 'Var', (118, 127)) ('adrenal pheochromocytoma', 'Disease', (218, 242)) ('paragangliomas', 'Phenotype', 'HP:0002668', (182, 196)) ('paraganglioma', 'Phenotype', 'HP:0002668', (182, 195)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (218, 242)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (168, 196)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (226, 242)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (218, 242)) ('SDHC', 'Gene', (135, 139)) ('head and neck paragangliomas', 'Disease', 'MESH:D006258', (168, 196)) ('SDHC', 'Gene', (39, 43)) ('SDHC', 'Gene', '6391', (135, 139)) 32479 31579262 Therefore, not only the SDHC mutations but also the LOH and MSI were taken into consideration in RCC patients. ('MSI', 'Disease', (60, 63)) ('RCC', 'Disease', (97, 100)) ('patients', 'Species', '9606', (101, 109)) ('SDHC', 'Gene', (24, 28)) ('RCC', 'Disease', 'MESH:D002292', (97, 100)) ('mutations', 'Var', (29, 38)) ('SDHC', 'Gene', '6391', (24, 28)) ('MSI', 'Disease', 'MESH:D053842', (60, 63)) 32480 31579262 Two telomeric (D3S3691, D3S1597) and five centromeric (D3SVHL3, D3S1337, D3SVHL7, D3SVHL8, D3S3611) were evaluated and renal carcinoma. ('D3SVHL3', 'Var', (55, 62)) ('D3S1597', 'Chemical', 'MESH:C571787', (24, 31)) ('carcinoma', 'Phenotype', 'HP:0030731', (125, 134)) ('D3S3611', 'Var', (91, 98)) ('D3SVHL7', 'Var', (73, 80)) ('D3SVHL8', 'Var', (82, 89)) ('renal carcinoma', 'Disease', (119, 134)) ('renal carcinoma', 'Disease', 'MESH:D002292', (119, 134)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (119, 134)) ('D3S3691', 'Var', (15, 22)) ('D3S1597', 'Var', (24, 31)) ('D3S1337', 'Var', (64, 71)) 32481 31579262 It was reported by Malinoc et al that for the clear cell renal carcinoma LOH was established in D3S3691 and, D3S1597 as the telomeric ones and in two centromeric signs (D3SVHL3 and D3S3611) in comparison with undesirable controls so it might be a new molecular indicator for the pathogenesis of RCC and ought to be checked in both heritable and sporadic forms. ('D3S3691', 'Var', (96, 103)) ('renal carcinoma', 'Disease', (57, 72)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (57, 72)) ('renal carcinoma', 'Disease', 'MESH:D002292', (57, 72)) ('clear cell renal carcinoma', 'Phenotype', 'HP:0006770', (46, 72)) ('D3S1597', 'Var', (109, 116)) ('D3S1597', 'Chemical', 'MESH:C571787', (109, 116)) ('RCC', 'Disease', 'MESH:D002292', (295, 298)) ('RCC', 'Disease', (295, 298)) ('D3S3611', 'Var', (181, 188)) ('carcinoma', 'Phenotype', 'HP:0030731', (63, 72)) 32483 31579262 There was another described patient of an RCC linked with an SDHA mutation. ('SDHA', 'Gene', (61, 65)) ('RCC', 'Disease', 'MESH:D002292', (42, 45)) ('patient', 'Species', '9606', (28, 35)) ('linked', 'Reg', (46, 52)) ('SDHA', 'Gene', '6389', (61, 65)) ('mutation', 'Var', (66, 74)) ('RCC', 'Disease', (42, 45)) 32484 31579262 As the main catalytic subunit of SDH complex, the (c.2T>C: p.M1T) mutation certainly deactivates the entire SDH complex. ('SDH', 'Gene', (33, 36)) ('SDH', 'Gene', '6390', (108, 111)) ('deactivates', 'NegReg', (85, 96)) ('SDH', 'Gene', '6390', (33, 36)) ('c.2T>C', 'Mutation', 'rs864622194', (51, 57)) ('c.2T>C: p.M1T) mutation', 'Var', (51, 74)) ('SDH', 'Gene', (108, 111)) ('p.M1T', 'Mutation', 'rs864622194', (59, 64)) 32486 31579262 Nevertheless, SDHA mutation does not result in loss of SDHA protein expression, which directs that the role of the other allele is normal, so SDHA in addition to SDHB have been recommended as diagnostic biomarkers for screening for potential SDH mutations in RCC cases. ('RCC', 'Disease', (259, 262)) ('SDH', 'Gene', (162, 165)) ('SDH', 'Gene', '6390', (55, 58)) ('mutation', 'Var', (19, 27)) ('SDH', 'Gene', '6390', (142, 145)) ('SDHA', 'Gene', (55, 59)) ('SDHA', 'Gene', (142, 146)) ('RCC', 'Disease', 'MESH:D002292', (259, 262)) ('mutations', 'Var', (246, 255)) ('SDHB', 'Gene', '6390', (162, 166)) ('SDHA', 'Gene', '6389', (55, 59)) ('SDHA', 'Gene', '6389', (142, 146)) ('SDH', 'Gene', '6390', (14, 17)) ('SDHA', 'Gene', (14, 18)) ('SDH', 'Gene', '6390', (242, 245)) ('SDH', 'Gene', (55, 58)) ('SDH', 'Gene', (142, 145)) ('SDHA', 'Gene', '6389', (14, 18)) ('SDHB', 'Gene', (162, 166)) ('SDH', 'Gene', '6390', (162, 165)) ('SDH', 'Gene', (14, 17)) ('SDH', 'Gene', (242, 245)) 32491 31579262 To our knowledge, as the first systematic review on the succinate dehydrogenase genetic alterations, we can say that the most frequently detected mutation is SDHB rs772551056 and its protein expression. ('rs772551056', 'Mutation', 'rs772551056', (163, 174)) ('succinate dehydrogenase', 'Gene', '6390', (56, 79)) ('succinate dehydrogenase', 'Gene', (56, 79)) ('SDHB', 'Gene', '6390', (158, 162)) ('rs772551056', 'Var', (163, 174)) ('SDHB', 'Gene', (158, 162)) 32492 31579262 Moreover, the c.380A>G mutation with four MSI markers (D3S3691, D3S1597, D3SVHL3, D3S3611) of SDHC can bring a morphologically distinct entity of RCC and be a predictor of its recurrence and aggressive behavior. ('aggressive behavior', 'Disease', (191, 210)) ('aggressive behavior', 'Disease', 'MESH:D001523', (191, 210)) ('RCC', 'Disease', 'MESH:D002292', (146, 149)) ('RCC', 'Disease', (146, 149)) ('c.380A>G', 'Var', (14, 22)) ('D3S3691', 'Var', (55, 62)) ('D3S1597', 'Var', (64, 71)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (191, 210)) ('D3S3611', 'Var', (82, 89)) ('MSI', 'Disease', 'MESH:D053842', (42, 45)) ('MSI', 'Disease', (42, 45)) ('c.380A>G', 'Mutation', 'c.380A>G', (14, 22)) ('SDHC', 'Gene', (94, 98)) ('D3S1597', 'Chemical', 'MESH:C571787', (64, 71)) ('SDHC', 'Gene', '6391', (94, 98)) ('D3SVHL3', 'Var', (73, 80)) 32493 31579262 The newly suggested mutation of SDHA (c.2T>C: p.M1T) can provide evidence of GIST associated with RCC as well. ('c.2T>C: p.M1T', 'Var', (38, 51)) ('associated', 'Reg', (82, 92)) ('SDHA', 'Gene', '6389', (32, 36)) ('c.2T>C', 'Mutation', 'rs864622194', (38, 44)) ('RCC', 'Disease', (98, 101)) ('RCC', 'Disease', 'MESH:D002292', (98, 101)) ('SDHA', 'Gene', (32, 36)) ('p.M1T', 'Mutation', 'rs864622194', (46, 51)) 32502 31540433 The relevance of such mutations in tumorigenesis and catecholamine biosynthesis and secretion are also presented with special emphasis on the role of hypoxia-inducible factors on the regulation of phosphorylation of tyrosine hydroxylase. ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('catecholamine biosynthesis', 'MPA', (53, 79)) ('hypoxia', 'Disease', (150, 157)) ('hypoxia', 'Disease', 'MESH:D000860', (150, 157)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('tumor', 'Disease', (35, 40)) ('tyrosine', 'Chemical', 'None', (216, 224)) ('catecholamine', 'Chemical', 'MESH:D002395', (53, 66)) ('mutations', 'Var', (22, 31)) 32507 31540433 More specifically for head and neck PGL and metastatic cases, [68Ga]-DOTATATE PET/CT has become the best available imaging modality. ('PGL', 'Disease', (36, 39)) ('metastatic', 'Disease', (44, 54)) ('PGL', 'Disease', 'MESH:D010235', (36, 39)) ('[68Ga', 'Var', (62, 67)) ('[68Ga]-DOTATATE', 'Chemical', 'MESH:C513399', (62, 77)) ('PGL', 'Phenotype', 'HP:0002668', (36, 39)) 32515 31540433 To achieve these goals, preclinical models are needed, such as transgenic mice (e.g., Epas1 Gain-of-Function Mutation), canine models that carry similar genomic alterations to humans, or patient-derived tumor xenografts (PDXs). ('Mutation', 'Var', (109, 117)) ('humans', 'Species', '9606', (176, 182)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('tumor', 'Disease', (203, 208)) ('Gain-of-Function', 'PosReg', (92, 108)) ('Epas1', 'Gene', '13819', (86, 91)) ('canine', 'Species', '9615', (120, 126)) ('tumor', 'Disease', 'MESH:D009369', (203, 208)) ('patient', 'Species', '9606', (187, 194)) ('transgenic mice', 'Species', '10090', (63, 78)) ('Epas1', 'Gene', (86, 91)) 32518 31540433 One original article shows a significant reduction or complete eradication of subcutaneous and metastatic lesions in a pheochromocytoma mouse model after immunotherapy using Mannan-BAM, TLR ligands, and anti-CD40. ('eradication', 'NegReg', (63, 74)) ('anti-CD40', 'Var', (203, 212)) ('pheochromocytoma', 'Disease', (119, 135)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (119, 135)) ('Mannan-BAM', 'Chemical', 'MESH:D008351', (174, 184)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (119, 135)) ('mouse', 'Species', '10090', (136, 141)) ('reduction', 'NegReg', (41, 50)) 32590 31110198 Twelve weeks after 131I-mIBG injection, examinations for the evaluation of therapeutic effects was performed in accordance with the Response Evaluation Criteria in Solid Tumours (RECIST). ('131I-mIBG', 'Var', (19, 28)) ('Tumours', 'Phenotype', 'HP:0002664', (170, 177)) ('131I-mIBG', 'Chemical', 'MESH:D019797', (19, 28)) ('Solid Tumours', 'Disease', (164, 177)) 32600 31110198 This phase I trial in a multi-center setting was conducted to assess the safety, dose-limiting toxicity (DLT), and efficacy of 131I-mIBG therapy in patients with refractory PPGL. ('patients', 'Species', '9606', (148, 156)) ('131I-mIBG', 'Var', (127, 136)) ('131I-mIBG', 'Chemical', 'MESH:D019797', (127, 136)) ('toxicity', 'Disease', 'MESH:D064420', (95, 103)) ('toxicity', 'Disease', (95, 103)) 32626 31110198 In this phase I multi-institutional clinical trial, along with the standardized treatment protocol, we evaluated the safety and efficacy of 131I-mIBG therapy for 20 patients with refractory PPGLs. ('131I-mIBG', 'Var', (140, 149)) ('131I-mIBG', 'Chemical', 'MESH:D019797', (140, 149)) ('PPGLs', 'Disease', (190, 195)) ('patients', 'Species', '9606', (165, 173)) ('PPGLs', 'Chemical', '-', (190, 195)) 32629 31110198 Although selection bias might have occurred in retrospective cohort studies:especially for rare diseases:those studies revealed that the incidence of grade 3 or higher adverse reactions was quite low and grade 4 hematological toxicity had never occurred at the fixed dose of 7.4 GBq of 131I-mIBG. ('GBq', 'Chemical', '-', (279, 282)) ('131I-mIBG', 'Var', (286, 295)) ('131I-mIBG', 'Chemical', 'MESH:D019797', (286, 295)) ('hematological toxicity', 'Disease', 'MESH:D006402', (212, 234)) ('hematological toxicity', 'Disease', (212, 234)) 32711 30445560 Association of prolactin receptor (PRLR) variants with prolactinomas Prolactinomas are the most frequent type of pituitary tumors, which represent 10-20% of all intracranial neoplasms in humans. ('prolactin receptor', 'Gene', (15, 33)) ('prolactinomas', 'Disease', 'MESH:D015175', (55, 68)) ('Association', 'Interaction', (0, 11)) ('variants', 'Var', (41, 49)) ('Prolactinomas', 'Disease', (69, 82)) ('PRLR', 'Gene', '5618', (35, 39)) ('prolactinoma', 'Phenotype', 'HP:0040278', (55, 67)) ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('humans', 'Species', '9606', (187, 193)) ('pituitary tumors', 'Disease', 'MESH:D010911', (113, 129)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('prolactinomas', 'Disease', (55, 68)) ('prolactin receptor', 'Gene', '5618', (15, 33)) ('intracranial neoplasms', 'Disease', 'MESH:D001932', (161, 183)) ('prolactinomas Prolactinomas', 'Phenotype', 'HP:0040278', (55, 82)) ('Prolactinomas', 'Disease', 'MESH:D015175', (69, 82)) ('neoplasms', 'Phenotype', 'HP:0002664', (174, 183)) ('PRLR', 'Gene', (35, 39)) ('intracranial neoplasms', 'Disease', (161, 183)) ('pituitary tumors', 'Disease', (113, 129)) 32714 30445560 This identified six germline PRLR variants, which comprised four rare variants (Gly57Ser, Glu376Gln, Arg453Trp and Asn492Ile) and two low-frequency variants (Ile76Val, Ile146Leu), but no somatic variants. ('Arg453Trp', 'Chemical', '-', (101, 110)) ('Ile76Val', 'Chemical', '-', (158, 166)) ('Asn492Ile', 'SUBSTITUTION', 'None', (115, 124)) ('Arg453Trp', 'Var', (101, 110)) ('Ile76Val', 'Var', (158, 166)) ('Ile146Leu', 'Var', (168, 177)) ('Glu376Gln', 'Var', (90, 99)) ('Gly57Ser', 'SUBSTITUTION', 'None', (80, 88)) ('Glu376Gln', 'SUBSTITUTION', 'None', (90, 99)) ('Gly57Ser', 'Var', (80, 88)) ('Ile146Leu', 'Chemical', '-', (168, 177)) ('PRLR', 'Gene', (29, 33)) ('Asn492Ile', 'Var', (115, 124)) 32715 30445560 The rare variants, Glu376Gln and Asn492Ile, which were in complete linkage disequilibrium, and are located in the PRLR intracellular domain, occurred with significantly higher frequencies (P < 0.0001) in prolactinoma patients than in 60 706 individuals of the Exome Aggregation Consortium cohort and 7045 individuals of the Oxford Biobank. ('prolactinoma', 'Disease', (204, 216)) ('prolactinoma', 'Phenotype', 'HP:0040278', (204, 216)) ('Asn492Ile', 'Var', (33, 42)) ('prolactinoma', 'Disease', 'MESH:D015175', (204, 216)) ('Asn492Ile', 'SUBSTITUTION', 'None', (33, 42)) ('Glu376Gln', 'SUBSTITUTION', 'None', (19, 28)) ('higher frequencies', 'PosReg', (169, 187)) ('patients', 'Species', '9606', (217, 225)) ('Glu376Gln', 'Var', (19, 28)) 32716 30445560 In vitro analysis of the PRLR variants demonstrated that the Asn492Ile variant, but not Glu376Gln, when compared to wild-type (WT) PRLR, increased prolactin-induced pAkt signaling (>1.3-fold, P < 0.02) and proliferation (1.4-fold, P < 0.02), but did not affect pSTAT5 signaling. ('Asn492Ile', 'SUBSTITUTION', 'None', (61, 70)) ('proliferation', 'CPA', (206, 219)) ('rat', 'Species', '10116', (46, 49)) ('increased prolactin', 'Phenotype', 'HP:0000870', (137, 156)) ('Akt', 'Gene', (166, 169)) ('Asn492Ile', 'Var', (61, 70)) ('rat', 'Species', '10116', (213, 216)) ('increased', 'PosReg', (137, 146)) ('Glu376Gln', 'Var', (88, 97)) ('Glu376Gln', 'SUBSTITUTION', 'None', (88, 97)) ('Akt', 'Gene', '207', (166, 169)) 32717 30445560 Treatment of cells with an Akt1/2 inhibitor or everolimus, which acts on the Akt pathway, reduced Asn492Ile signaling and proliferation to WT levels. ('Akt', 'Gene', '207', (77, 80)) ('Asn492Ile', 'SUBSTITUTION', 'None', (98, 107)) ('reduced', 'NegReg', (90, 97)) ('Asn492Ile', 'Var', (98, 107)) ('rat', 'Species', '10116', (129, 132)) ('Akt', 'Gene', (77, 80)) ('Akt', 'Gene', '207', (27, 30)) ('everolimus', 'Chemical', 'MESH:D000068338', (47, 57)) ('men', 'Species', '9606', (5, 8)) ('proliferation', 'CPA', (122, 135)) ('Akt', 'Gene', (27, 30)) 32718 30445560 Thus, our results identify an association between a gain-of-function PRLR variant and prolactinomas and reveal a new etiology and potential therapeutic approach for these neoplasms. ('prolactinoma', 'Phenotype', 'HP:0040278', (86, 98)) ('gain-of-function', 'PosReg', (52, 68)) ('variant', 'Var', (74, 81)) ('neoplasms', 'Phenotype', 'HP:0002664', (171, 180)) ('prolactinomas', 'Disease', 'MESH:D015175', (86, 99)) ('PRLR', 'Gene', (69, 73)) ('prolactinomas', 'Disease', (86, 99)) ('neoplasms', 'Disease', 'MESH:D009369', (171, 180)) ('neoplasms', 'Disease', (171, 180)) 32723 30445560 Prolactinomas in ~5% of patients may occur as a hereditary disorder and be due to germline mutations of the multiple endocrine neoplasia type-1 (MEN1) or aryl hydrocarbon receptor interacting protein (AIP) genes. ('aryl hydrocarbon receptor interacting protein', 'Gene', '9049', (154, 199)) ('neoplasia', 'Phenotype', 'HP:0002664', (127, 136)) ('AIP', 'Gene', (201, 204)) ('due', 'Reg', (75, 78)) ('hereditary disorder', 'Disease', (48, 67)) ('Prolactinomas', 'Disease', 'MESH:D015175', (0, 13)) ('MEN1', 'Gene', (145, 149)) ('MEN1', 'Gene', '4221', (145, 149)) ('multiple endocrine neoplasia type-1', 'Gene', '4221', (108, 143)) ('multiple endocrine neoplasia type-1', 'Gene', (108, 143)) ('mutations', 'Var', (91, 100)) ('Prolactinomas', 'Disease', (0, 13)) ('aryl hydrocarbon receptor interacting protein', 'Gene', (154, 199)) ('patients', 'Species', '9606', (24, 32)) ('hereditary disorder', 'Disease', 'MESH:D030342', (48, 67)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (117, 136)) 32725 30445560 The PRLR, which functions as a dimer, is a class I cytokine receptor that has a multi-domain structure consisting of a ligand-binding extracellular domain (ECD, residues 1-210), a single transmembrane segment (residues 211-234) and an intracellular domain (ICD, residues 235-598) (Supplementary Material, Fig. ('men', 'Species', '9606', (204, 207)) ('men', 'Species', '9606', (287, 290)) ('ICD', 'Disease', 'OMIM:252500', (257, 260)) ('residues 211-234', 'Var', (210, 226)) ('ICD', 'Disease', (257, 260)) 32726 30445560 The ECD comprises two subdomains designated D1 (residues 1-101) and D2 (residues 109-210), which are important in ligand binding and subsequent PRLR activation, and the ICD is involved in activation of signaling pathways that include the JAK2-STAT5 pathway, as well as the PI3K/Akt and MAPK pathways (Supplementary Material, Fig. ('Akt', 'Gene', (278, 281)) ('ICD', 'Disease', 'OMIM:252500', (169, 172)) ('men', 'Species', '9606', (307, 310)) ('ICD', 'Disease', (169, 172)) ('signaling pathways', 'Pathway', (202, 220)) ('residues', 'Var', (72, 80)) ('MAPK pathways', 'Pathway', (286, 299)) ('Akt', 'Gene', '207', (278, 281)) ('activation', 'PosReg', (188, 198)) ('JAK2-STAT5 pathway', 'Pathway', (238, 256)) 32733 30445560 For example, two low-frequency [defined as having a minor allele frequency (MAF) of 1-5%] PRLR variants, Ile76Val and Ile146Leu, have been reported to result in a gain of function with constitutive activity and to occur in 15% of a cohort of French women with multiple fibroadenomas of the breast (OMIM #615554). ('constitutive activity', 'MPA', (185, 206)) ('Ile76Val', 'Chemical', '-', (105, 113)) ('fibroadenomas of the breast', 'Phenotype', 'HP:0010619', (269, 296)) ('women', 'Species', '9606', (249, 254)) ('Ile146Leu', 'Chemical', '-', (118, 127)) ('gain', 'PosReg', (163, 167)) ('multiple fibroadenomas of the breast', 'Disease', 'OMIM:615554', (260, 296)) ('multiple fibroadenomas of the breast', 'Disease', (260, 296)) ('Ile146Leu', 'Var', (118, 127)) ('PRLR', 'Gene', (90, 94)) ('Ile76Val', 'Var', (105, 113)) 32735 30445560 In addition, a loss-of-function PRLR mutation His188Arg mutation (H188R), which is located in the ECD and abolishes JAK2/STAT5 signaling, has been reported to occur in one family with autosomal dominant hyperprolactinemia (OMIM #615555) and to be associated with oligomenorrhea and infertility. ('autosomal dominant hyperprolactinemia', 'Disease', (184, 221)) ('hyperprolactinemia', 'Phenotype', 'HP:0000870', (203, 221)) ('JAK2/STAT5 signaling', 'MPA', (116, 136)) ('His188Arg', 'SUBSTITUTION', 'None', (46, 55)) ('infertility', 'Phenotype', 'HP:0000789', (282, 293)) ('oligomenorrhea and infertility', 'Disease', 'MESH:D009839', (263, 293)) ('abolishes', 'NegReg', (106, 115)) ('His188Arg', 'Var', (46, 55)) ('oligomenorrhea', 'Phenotype', 'HP:0000876', (263, 277)) ('autosomal dominant hyperprolactinemia', 'Disease', 'MESH:D002640', (184, 221)) ('loss-of-function', 'NegReg', (15, 31)) ('H188R', 'Mutation', 'rs398122522', (66, 71)) 32738 30445560 Furthermore, neuron-specific conditional Prlr knockout mice have also been reported to develop hyperprolactinemia and abnormalities of the estrous cycle, with lactotroph-specific conditional Prlr knockout mice having normal circulating prolactin levels and estrous cycles, but impaired dopaminergic tone. ('circulating prolactin levels', 'Phenotype', 'HP:0000870', (224, 252)) ('knockout', 'Var', (46, 54)) ('develop', 'PosReg', (87, 94)) ('estrous', 'CPA', (257, 264)) ('circulating prolactin levels', 'MPA', (224, 252)) ('dopamine', 'Chemical', 'MESH:D004298', (286, 294)) ('mice', 'Species', '10090', (55, 59)) ('hyperprolactinemia and abnormalities of the estrous', 'Disease', 'MESH:D002640', (95, 146)) ('mice', 'Species', '10090', (205, 209)) ('impaired', 'NegReg', (277, 285)) ('dopaminergic tone', 'MPA', (286, 303)) ('hyperprolactinemia', 'Phenotype', 'HP:0000870', (95, 113)) 32740 30445560 We therefore investigated the hypothesis that PRLR variants, resulting in aberrant PRLR signaling, may be associated with prolactinoma and hyperprolactinaemia in humans. ('PRLR signaling', 'MPA', (83, 97)) ('hyperprolactinaemia', 'Disease', 'MESH:D002640', (139, 158)) ('humans', 'Species', '9606', (162, 168)) ('associated', 'Reg', (106, 116)) ('variants', 'Var', (51, 59)) ('prolactinoma', 'Disease', (122, 134)) ('hyperprolactinaemia', 'Phenotype', 'HP:0000870', (139, 158)) ('hyperprolactinaemia', 'Disease', (139, 158)) ('prolactinoma', 'Disease', 'MESH:D015175', (122, 134)) ('prolactinoma', 'Phenotype', 'HP:0040278', (122, 134)) ('PRLR', 'Gene', (46, 50)) 32741 30445560 Surprisingly, a previous French study has reported an absence of an association between PRLR variants and prolactinomas in humans. ('PRLR', 'Gene', (88, 92)) ('variants', 'Var', (93, 101)) ('prolactinomas', 'Disease', (106, 119)) ('humans', 'Species', '9606', (123, 129)) ('prolactinoma', 'Phenotype', 'HP:0040278', (106, 118)) ('prolactinomas', 'Disease', 'MESH:D015175', (106, 119)) 32742 30445560 However, here we show that germline Glu376Gln and Asn492Ile PRLR ICD variants, which are rare variants (defined as having a MAF <1%) and in complete linkage disequilibrium (LD), are significantly associated with occurrence of prolactinomas in humans. ('Asn492Ile', 'Var', (50, 59)) ('ICD', 'Disease', (65, 68)) ('Glu376Gln', 'SUBSTITUTION', 'None', (36, 45)) ('associated with', 'Reg', (196, 211)) ('prolactinomas', 'Disease', (226, 239)) ('humans', 'Species', '9606', (243, 249)) ('prolactinoma', 'Phenotype', 'HP:0040278', (226, 238)) ('ICD', 'Disease', 'OMIM:252500', (65, 68)) ('Glu376Gln', 'Var', (36, 45)) ('Asn492Ile', 'SUBSTITUTION', 'None', (50, 59)) ('prolactinomas', 'Disease', 'MESH:D015175', (226, 239)) 32743 30445560 In addition, we show that the Asn492Ile PRLR variant is associated with increased signaling by the Akt pathway and that everolimus, a mammalian target of rapamycin (mTOR) inhibitor, is effective in normalizing this gain of Akt activity. ('signaling', 'MPA', (82, 91)) ('Akt', 'Gene', (223, 226)) ('increased', 'PosReg', (72, 81)) ('Asn492Ile', 'SUBSTITUTION', 'None', (30, 39)) ('Akt', 'Gene', '207', (99, 102)) ('activity', 'MPA', (227, 235)) ('everolimus', 'Chemical', 'MESH:D000068338', (120, 130)) ('Akt', 'Gene', (99, 102)) ('mammalian', 'Species', '9606', (134, 143)) ('Asn492Ile', 'Var', (30, 39)) ('Akt', 'Gene', '207', (223, 226)) ('mTOR', 'Gene', (165, 169)) ('mTOR', 'Gene', '2475', (165, 169)) ('PRLR', 'Gene', (40, 44)) 32746 30445560 This identified the presence of six germline PRLR coding variants, which comprised four rare variants (Gly57Ser, Glu376Gln, Arg453Trp and Asn492Ile) with a MAF of <1% and two low-frequency variants (Ile76Val and Ile146Leu) with a MAF of 1-5% (Figs 1 and 2). ('Glu376Gln', 'SUBSTITUTION', 'None', (113, 122)) ('Arg453Trp', 'Chemical', '-', (124, 133)) ('Ile146Leu', 'Var', (212, 221)) ('Ile76Val', 'Var', (199, 207)) ('Gly57Ser', 'SUBSTITUTION', 'None', (103, 111)) ('Arg453Trp', 'Var', (124, 133)) ('PRLR', 'Gene', (45, 49)) ('Ile146Leu', 'Chemical', '-', (212, 221)) ('Gly57Ser', 'Var', (103, 111)) ('Asn492Ile', 'SUBSTITUTION', 'None', (138, 147)) ('Ile76Val', 'Chemical', '-', (199, 207)) ('Glu376Gln', 'Var', (113, 122)) ('Asn492Ile', 'Var', (138, 147)) 32747 30445560 Combined analyses of leucocyte and prolactinoma DNA from 4 patients and that of 11 tumor DNA samples did not identify any additional tumor-specific PRLR variants, thereby indicating that these PRLR variants are germline and that somatic PRLR mutations are unlikely to be involved in the development of prolactinomas in humans (Fig. ('prolactinoma', 'Disease', 'MESH:D015175', (302, 314)) ('tumor', 'Disease', (83, 88)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('prolactinoma', 'Disease', (35, 47)) ('tumor', 'Disease', 'MESH:D009369', (83, 88)) ('PRLR', 'Gene', (237, 241)) ('men', 'Species', '9606', (294, 297)) ('patients', 'Species', '9606', (59, 67)) ('prolactinoma', 'Disease', 'MESH:D015175', (35, 47)) ('prolactinomas', 'Disease', (302, 315)) ('prolactinoma', 'Phenotype', 'HP:0040278', (302, 314)) ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('tumor', 'Disease', (133, 138)) ('variants', 'Var', (198, 206)) ('prolactinoma', 'Disease', (302, 314)) ('tumor', 'Disease', 'MESH:D009369', (133, 138)) ('prolactinomas', 'Disease', 'MESH:D015175', (302, 315)) ('mutations', 'Var', (242, 251)) ('humans', 'Species', '9606', (319, 325)) ('prolactinoma', 'Phenotype', 'HP:0040278', (35, 47)) 32748 30445560 Three of the PRLR variants (Gly57Ser, Ile76Val and Ile146Leu) were located in the ECD, while the other three (Glu376Gln, Arg453Trp and Asn492Ile) were located in the ICD (Supplementary Material, Fig. ('ICD', 'Disease', 'OMIM:252500', (166, 169)) ('Arg453Trp', 'Chemical', '-', (121, 130)) ('Asn492Ile', 'Var', (135, 144)) ('Gly57Ser', 'SUBSTITUTION', 'None', (28, 36)) ('Glu376Gln', 'SUBSTITUTION', 'None', (110, 119)) ('Arg453Trp', 'Var', (121, 130)) ('ICD', 'Disease', (166, 169)) ('men', 'Species', '9606', (177, 180)) ('Glu376Gln', 'Var', (110, 119)) ('Ile76Val', 'Var', (38, 46)) ('Gly57Ser', 'Var', (28, 36)) ('Ile146Leu', 'Var', (51, 60)) ('Ile76Val', 'Chemical', '-', (38, 46)) ('Asn492Ile', 'SUBSTITUTION', 'None', (135, 144)) ('Ile146Leu', 'Chemical', '-', (51, 60)) 32749 30445560 Each of the three PRLR ICD rare variants (Glu376Gln, Arg453Trp and Asn492Ile) were observed at significantly higher frequencies in the 46 prolactinoma patients when compared to their frequencies in the Exome Aggregation Consortium (ExAc) cohort (Fig. ('prolactinoma', 'Disease', 'MESH:D015175', (138, 150)) ('Asn492Ile', 'SUBSTITUTION', 'None', (67, 76)) ('prolactinoma', 'Phenotype', 'HP:0040278', (138, 150)) ('Glu376Gln', 'Var', (42, 51)) ('Asn492Ile', 'Var', (67, 76)) ('Glu376Gln', 'SUBSTITUTION', 'None', (42, 51)) ('higher', 'PosReg', (109, 115)) ('ICD', 'Disease', 'OMIM:252500', (23, 26)) ('Arg453Trp', 'Chemical', '-', (53, 62)) ('patients', 'Species', '9606', (151, 159)) ('ICD', 'Disease', (23, 26)) ('Arg453Trp', 'Var', (53, 62)) ('prolactinoma', 'Disease', (138, 150)) 32750 30445560 The Glu376Gln and Asn492Ile variants were found not to occur in the four patients with familial prolactinoma. ('familial prolactinoma', 'Disease', (87, 108)) ('Glu376Gln', 'Var', (4, 13)) ('Glu376Gln', 'SUBSTITUTION', 'None', (4, 13)) ('Asn492Ile', 'SUBSTITUTION', 'None', (18, 27)) ('familial prolactinoma', 'Disease', 'MESH:D015175', (87, 108)) ('prolactinoma', 'Phenotype', 'HP:0040278', (96, 108)) ('patients', 'Species', '9606', (73, 81)) ('Asn492Ile', 'Var', (18, 27)) 32751 30445560 The Arg453Trp variant, which was observed in four samples (two leucocyte and two tumors) from unrelated individuals, was absent in the ExAc database, and hence represented a novel variant. ('tumors', 'Disease', 'MESH:D009369', (81, 87)) ('tumors', 'Disease', (81, 87)) ('Arg453Trp', 'Var', (4, 13)) ('Arg453Trp', 'Chemical', '-', (4, 13)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('tumors', 'Phenotype', 'HP:0002664', (81, 87)) 32753 30445560 In addition, the co-occurrence of the Glu376Gln and Asn492Ile in nine individuals in the prolactinoma cohort indicated that these two rare variants are in a high degree of LD. ('prolactinoma cohort', 'Disease', 'MESH:D015175', (89, 108)) ('Glu376Gln', 'Var', (38, 47)) ('Glu376Gln', 'SUBSTITUTION', 'None', (38, 47)) ('prolactinoma cohort', 'Disease', (89, 108)) ('Asn492Ile', 'SUBSTITUTION', 'None', (52, 61)) ('prolactinoma', 'Phenotype', 'HP:0040278', (89, 101)) ('Asn492Ile', 'Var', (52, 61)) 32754 30445560 This is supported by the observation that identical numbers of individuals of European descent harboured each of the Glu376Gln and Asn492Ile variants in the ExAC population, while the variants were also observed in perfect LD (r2 = 1/D' = 1) in the Oxford Biobank (OBB) cohort. ('Glu376Gln', 'SUBSTITUTION', 'None', (117, 126)) ('Asn492Ile', 'Var', (131, 140)) ('Asn492Ile', 'SUBSTITUTION', 'None', (131, 140)) ('Glu376Gln', 'Var', (117, 126)) 32755 30445560 The frequencies of the co-occurring Glu376Gln and Asn492Ile PRLR ICD rare variants were significantly higher in the prolactinoma patients than in the OBB cohort, thereby confirming the association between these two ICD PRLR variants and prolactinomas (Table 1). ('ICD', 'Disease', 'OMIM:252500', (215, 218)) ('prolactinomas', 'Disease', 'MESH:D015175', (237, 250)) ('prolactinoma', 'Disease', (116, 128)) ('Asn492Ile', 'SUBSTITUTION', 'None', (50, 59)) ('prolactinoma', 'Disease', 'MESH:D015175', (237, 249)) ('higher', 'PosReg', (102, 108)) ('prolactinoma', 'Disease', 'MESH:D015175', (116, 128)) ('Glu376Gln', 'Var', (36, 45)) ('Asn492Ile', 'Var', (50, 59)) ('PRLR', 'Gene', (60, 64)) ('patients', 'Species', '9606', (129, 137)) ('prolactinomas', 'Disease', (237, 250)) ('prolactinoma', 'Phenotype', 'HP:0040278', (237, 249)) ('ICD', 'Disease', (65, 68)) ('ICD', 'Disease', (215, 218)) ('prolactinoma', 'Disease', (237, 249)) ('prolactinoma', 'Phenotype', 'HP:0040278', (116, 128)) ('ICD', 'Disease', 'OMIM:252500', (65, 68)) ('Glu376Gln', 'SUBSTITUTION', 'None', (36, 45)) 32756 30445560 Furthermore, ~90% (8/9) of the Glu376Gln and Asn492Ile PRLR variants occurred in male prolactinoma patients (Fig. ('prolactinoma', 'Phenotype', 'HP:0040278', (86, 98)) ('Glu376Gln', 'SUBSTITUTION', 'None', (31, 40)) ('male prolactinoma', 'Disease', (81, 98)) ('Glu376Gln', 'Var', (31, 40)) ('patients', 'Species', '9606', (99, 107)) ('male prolactinoma', 'Disease', 'MESH:D015175', (81, 98)) ('Asn492Ile', 'SUBSTITUTION', 'None', (45, 54)) ('Asn492Ile', 'Var', (45, 54)) ('occurred', 'Reg', (69, 77)) 32757 30445560 1), and in 40% (6/15) of patients who had required pituitary surgery, indicating that these two PRLR variants may be associated with aggressive or medically non-responsive prolactinomas. ('prolactinomas', 'Disease', 'MESH:D015175', (172, 185)) ('associated with', 'Reg', (117, 132)) ('prolactinomas', 'Disease', (172, 185)) ('variants', 'Var', (101, 109)) ('patients', 'Species', '9606', (25, 33)) ('prolactinoma', 'Phenotype', 'HP:0040278', (172, 184)) 32758 30445560 These associations between prolactinomas and the two ICD PRLR rare variants (Glu376Gln and Asn492Ile) remained significant in separate sub-analyses of leucocyte and tumor DNA from 35 and 15 patients, respectively (Table 1). ('prolactinomas', 'Disease', (27, 40)) ('tumor', 'Disease', (165, 170)) ('tumor', 'Phenotype', 'HP:0002664', (165, 170)) ('Asn492Ile', 'SUBSTITUTION', 'None', (91, 100)) ('prolactinomas', 'Disease', 'MESH:D015175', (27, 40)) ('patients', 'Species', '9606', (190, 198)) ('ICD', 'Disease', 'OMIM:252500', (53, 56)) ('Asn492Ile', 'Var', (91, 100)) ('tumor', 'Disease', 'MESH:D009369', (165, 170)) ('rat', 'Species', '10116', (130, 133)) ('prolactinoma', 'Phenotype', 'HP:0040278', (27, 39)) ('ICD', 'Disease', (53, 56)) ('Glu376Gln', 'SUBSTITUTION', 'None', (77, 86)) ('Glu376Gln', 'Var', (77, 86)) 32759 30445560 The three PRLR ICD rare variants (Glu376Gln, Arg453Trp and Asn492Ile) were predicted by SIFT and/or PolyPhen-2 to be damaging and to have partial evolutionary conservation (Figs 2 and 3). ('Arg453Trp', 'Chemical', '-', (45, 54)) ('Glu376Gln', 'Var', (34, 43)) ('Glu376Gln', 'SUBSTITUTION', 'None', (34, 43)) ('ICD', 'Disease', 'OMIM:252500', (15, 18)) ('Asn492Ile', 'SUBSTITUTION', 'None', (59, 68)) ('Arg453Trp', 'Var', (45, 54)) ('ICD', 'Disease', (15, 18)) ('SIFT', 'Disease', (88, 92)) ('Asn492Ile', 'Var', (59, 68)) ('SIFT', 'Disease', 'None', (88, 92)) 32760 30445560 Weaker and variable associations between the prolactinomas and the PRLR ECD variants (Gly57Ser, Ile76Val and Ile146Leu) were also observed (Table 1). ('PRLR', 'Gene', (67, 71)) ('prolactinoma', 'Phenotype', 'HP:0040278', (45, 57)) ('Ile76Val', 'Var', (96, 104)) ('Gly57Ser', 'SUBSTITUTION', 'None', (86, 94)) ('prolactinomas', 'Disease', 'MESH:D015175', (45, 58)) ('Ile146Leu', 'Chemical', '-', (109, 118)) ('Ile76Val', 'Chemical', '-', (96, 104)) ('Gly57Ser', 'Var', (86, 94)) ('prolactinomas', 'Disease', (45, 58)) ('Ile146Leu', 'Var', (109, 118)) 32761 30445560 The ECD Gly57Ser rare variant was predicted, by SIFT and/or PolyPhen-2, to be damaging, while the ECD Ile76Val and Ile146Leu low-frequency variants were predicted to be benign (Fig. ('SIFT', 'Disease', (48, 52)) ('Ile76Val', 'Var', (102, 110)) ('Ile76Val', 'Chemical', '-', (102, 110)) ('Gly57Ser', 'SUBSTITUTION', 'None', (8, 16)) ('SIFT', 'Disease', 'None', (48, 52)) ('Gly57Ser', 'Var', (8, 16)) ('Ile146Leu', 'Var', (115, 124)) ('Ile146Leu', 'Chemical', '-', (115, 124)) 32762 30445560 The PRLR can signal by STAT5 and PI3K/Akt and the effects of the six PRLR variants on these signaling pathways were therefore assessed by studying the following: the cellular expression of the PRLR; the immediate effects of prolactin binding on pSTAT5 and pAkt activation; and the later downstream effects of receptor activation on transcription of the STAT5 target gene cytokine inducible SH2-containing protein (CISH), cellular proliferation and apoptosis (Fig. ('CISH', 'Gene', '1154', (414, 418)) ('apoptosis', 'CPA', (448, 457)) ('cytokine inducible SH2-containing protein', 'Gene', '1154', (371, 412)) ('cellular proliferation', 'CPA', (421, 443)) ('rat', 'Species', '10116', (437, 440)) ('CISH', 'Gene', (414, 418)) ('Akt', 'Gene', (257, 260)) ('Akt', 'Gene', '207', (257, 260)) ('Akt', 'Gene', '207', (38, 41)) ('variants', 'Var', (74, 82)) ('cytokine inducible SH2-containing protein', 'Gene', (371, 412)) ('Akt', 'Gene', (38, 41)) 32764 30445560 The effects on PRLR signaling were assessed together with that of the His188Arg mutant PRLR ECD that has been reported to result in a loss of function in association with familial hyperprolactinaemia. ('His188Arg', 'Var', (70, 79)) ('hyperprolactinaemia', 'Phenotype', 'HP:0000870', (180, 199)) ('familial hyperprolactinaemia', 'Disease', (171, 199)) ('PRLR', 'Gene', (87, 91)) ('His188Arg', 'SUBSTITUTION', 'None', (70, 79)) ('familial hyperprolactinaemia', 'Disease', 'MESH:D002640', (171, 199)) 32767 30445560 In contrast, the loss-of-function PRLR ECD mutant His188Arg abolished pSTAT5 expression (Figs 4B and 5B) and CISH transcription (Figs 4D and 5D), consistent with previous reports, and impaired the pAkt response (Figs 4C and 5C), but did not affect proliferation (Figs 4E and 5E). ('His188Arg', 'SUBSTITUTION', 'None', (50, 59)) ('abolished', 'NegReg', (60, 69)) ('expression', 'MPA', (77, 87)) ('pSTAT5', 'Gene', (70, 76)) ('impaired', 'NegReg', (184, 192)) ('loss-of-function', 'NegReg', (17, 33)) ('Akt', 'Gene', '207', (198, 201)) ('CISH', 'Gene', '1154', (109, 113)) ('rat', 'Species', '10116', (255, 258)) ('CISH', 'Gene', (109, 113)) ('Akt', 'Gene', (198, 201)) ('transcription', 'MPA', (114, 127)) ('His188Arg', 'Var', (50, 59)) 32768 30445560 Cells expressing the prolactinoma-associated PRLR ECD variant Ile76Val (Fig. ('prolactinoma', 'Disease', (21, 33)) ('Ile76Val', 'Var', (62, 70)) ('prolactinoma', 'Phenotype', 'HP:0040278', (21, 33)) ('prolactinoma', 'Disease', 'MESH:D015175', (21, 33)) ('Ile76Val', 'Chemical', '-', (62, 70)) 32769 30445560 4B-E) and the ICD variants Glu376Gln and Arg453Trp (Fig. ('ICD', 'Disease', (14, 17)) ('Arg453Trp', 'Var', (41, 50)) ('Glu376Gln', 'Var', (27, 36)) ('Glu376Gln', 'SUBSTITUTION', 'None', (27, 36)) ('Arg453Trp', 'Chemical', '-', (41, 50)) ('ICD', 'Disease', 'OMIM:252500', (14, 17)) 32771 30445560 Cells expressing the Gly57Ser and Ile146Leu PRLR ECD variants showed decreased transcription of CISH (Fig. ('CISH', 'Gene', (96, 100)) ('Ile146Leu', 'Var', (34, 43)) ('Gly57Ser', 'Var', (21, 29)) ('decreased', 'NegReg', (69, 78)) ('transcription', 'MPA', (79, 92)) ('CISH', 'Gene', '1154', (96, 100)) ('Ile146Leu', 'Chemical', '-', (34, 43)) ('Gly57Ser', 'SUBSTITUTION', 'None', (21, 29)) ('variants', 'Var', (53, 61)) 32774 30445560 In contrast, cells expressing the ICD variant Asn492Ile showed increased pAkt expression (Fig. ('Akt', 'Gene', '207', (74, 77)) ('increased', 'PosReg', (63, 72)) ('Asn492Ile', 'Var', (46, 55)) ('Asn492Ile', 'SUBSTITUTION', 'None', (46, 55)) ('Akt', 'Gene', (74, 77)) ('ICD', 'Disease', 'OMIM:252500', (34, 37)) ('ICD', 'Disease', (34, 37)) 32777 30445560 This increased proliferation of cells expressing the Asn492Ile PRLR variant was confirmed by measuring BrdU incorporation (Fig. ('Asn492Ile', 'SUBSTITUTION', 'None', (53, 62)) ('rat', 'Species', '10116', (115, 118)) ('Asn492Ile', 'Var', (53, 62)) ('rat', 'Species', '10116', (22, 25)) ('proliferation', 'CPA', (15, 28)) ('BrdU', 'MPA', (103, 107)) ('increased', 'PosReg', (5, 14)) ('BrdU', 'Chemical', 'MESH:D001973', (103, 107)) 32778 30445560 Apoptosis, assessed using a Caspase-Glo-3/7 assay, was not altered in cells expressing the Asn492Ile variant, when compared to those expressing WT PRLR, but was significantly increased in cells expressing the His188Arg mutant PRLR following 96 h of treatment with 200 ng/mL PRL (Fig. ('PRL', 'Gene', (274, 277)) ('His188Arg', 'Var', (209, 218)) ('men', 'Species', '9606', (254, 257)) ('Asn492Ile', 'SUBSTITUTION', 'None', (91, 100)) ('PRL', 'Gene', '5617', (274, 277)) ('PRL', 'Gene', (147, 150)) ('PRL', 'Gene', (226, 229)) ('Asn492Ile', 'Var', (91, 100)) ('His188Arg', 'SUBSTITUTION', 'None', (209, 218)) ('PRL', 'Gene', '5617', (147, 150)) ('PRL', 'Gene', '5617', (226, 229)) ('Apoptosis', 'CPA', (0, 9)) ('increased', 'PosReg', (175, 184)) 32779 30445560 These results indicate that the Asn492Ile PRLR is most likely to be a rare pathogenic variant with a role in the etiology of prolactinomas (Supplementary Material, Table S1). ('prolactinoma', 'Phenotype', 'HP:0040278', (125, 137)) ('Asn492Ile', 'SUBSTITUTION', 'None', (32, 41)) ('Asn492Ile', 'Var', (32, 41)) ('men', 'Species', '9606', (146, 149)) ('prolactinomas', 'Disease', 'MESH:D015175', (125, 138)) ('prolactinomas', 'Disease', (125, 138)) 32780 30445560 The finding that the prolactinoma-associated Asn492Ile PRLR variant resulted in a gain of function that increased pAkt signaling, which is known to have a role in the etiology of other neoplasms (e.g. ('Akt', 'Gene', '207', (115, 118)) ('neoplasms', 'Disease', 'MESH:D009369', (185, 194)) ('neoplasms', 'Disease', (185, 194)) ('increased', 'PosReg', (104, 113)) ('Akt', 'Gene', (115, 118)) ('prolactinoma', 'Disease', (21, 33)) ('PRLR', 'Gene', (55, 59)) ('prolactinoma', 'Disease', 'MESH:D015175', (21, 33)) ('neoplasms', 'Phenotype', 'HP:0002664', (185, 194)) ('Asn492Ile', 'SUBSTITUTION', 'None', (45, 54)) ('prolactinoma', 'Phenotype', 'HP:0040278', (21, 33)) ('gain', 'PosReg', (82, 86)) ('Asn492Ile', 'Var', (45, 54)) 32786 30445560 Moreover, the prolactin-induced elevations in pAkt activity and proliferation that were associated with the Asn492Ile mutant PRLR could also be reduced to similar levels to those of cells expressing WT PRLR, by a concentration of 10 mum Akt1/2 inhibitor or 20 nM everolimus (Fig. ('Asn492Ile', 'Var', (108, 117)) ('reduced', 'NegReg', (144, 151)) ('prolactin-induced', 'MPA', (14, 31)) ('rat', 'Species', '10116', (71, 74)) ('elevations', 'PosReg', (32, 42)) ('Akt', 'Gene', '207', (47, 50)) ('everolimus', 'Chemical', 'MESH:D000068338', (263, 273)) ('Akt', 'Gene', '207', (237, 240)) ('proliferation', 'CPA', (64, 77)) ('rat', 'Species', '10116', (220, 223)) ('Asn492Ile', 'SUBSTITUTION', 'None', (108, 117)) ('Akt', 'Gene', (47, 50)) ('Akt', 'Gene', (237, 240)) 32787 30445560 In contrast, everolimus had no effect on the pSTAT5 pathway in WT or mutant Asn492Ile PRLR-expressing cells, thereby demonstrating its specificity for the pAkt pathway (Fig. ('rat', 'Species', '10116', (124, 127)) ('Asn492Ile', 'Var', (76, 85)) ('mutant', 'Var', (69, 75)) ('Akt', 'Gene', (156, 159)) ('pSTAT5 pathway', 'Pathway', (45, 59)) ('everolimus', 'Chemical', 'MESH:D000068338', (13, 23)) ('Asn492Ile', 'SUBSTITUTION', 'None', (76, 85)) ('Akt', 'Gene', '207', (156, 159)) 32790 30445560 Glu376Gln and Asn492Ile) (Table 1) in patients with prolactinomas, together with our previous observation that individuals harboring a loss-of-function mutant Arg188His PRLR developed hyperprolactinemia, led us to hypothesize that asymptomatic, healthy (i.e. ('Arg188His', 'Var', (159, 168)) ('Glu376Gln', 'Var', (0, 9)) ('prolactinoma', 'Phenotype', 'HP:0040278', (52, 64)) ('hyperprolactinemia', 'Phenotype', 'HP:0000870', (184, 202)) ('prolactinomas', 'Disease', 'MESH:D015175', (52, 65)) ('patients', 'Species', '9606', (38, 46)) ('hyperprolactinemia', 'Disease', 'MESH:D002640', (184, 202)) ('Asn492Ile', 'SUBSTITUTION', 'None', (14, 23)) ('Arg188His', 'SUBSTITUTION', 'None', (159, 168)) ('Asn492Ile', 'Var', (14, 23)) ('prolactinomas', 'Disease', (52, 65)) ('Glu376Gln', 'SUBSTITUTION', 'None', (0, 9)) ('hyperprolactinemia', 'Disease', (184, 202)) 32791 30445560 normal) individuals with such PRLR variants may have alterations in serum prolactin concentrations. ('serum prolactin concentrations', 'MPA', (68, 98)) ('rat', 'Species', '10116', (91, 94)) ('variants', 'Var', (35, 43)) ('alterations', 'Reg', (53, 64)) ('rat', 'Species', '10116', (57, 60)) 32793 30445560 Examination of the available exome chip data revealed the occurrence of four of the six PRLR variants identified in the prolactinoma patient cohort (Ile76Val, Ile146Leu, Glu376Gln and Asn492Ile) in >1 individual (Table 1 and Fig. ('Asn492Ile', 'Var', (184, 193)) ('Ile76Val', 'Chemical', '-', (149, 157)) ('PRLR', 'Gene', (88, 92)) ('Ile146Leu', 'Chemical', '-', (159, 168)) ('patient', 'Species', '9606', (133, 140)) ('occurrence', 'Reg', (58, 68)) ('prolactinoma', 'Disease', (120, 132)) ('Glu376Gln', 'SUBSTITUTION', 'None', (170, 179)) ('Ile146Leu', 'Var', (159, 168)) ('prolactinoma', 'Phenotype', 'HP:0040278', (120, 132)) ('Glu376Gln', 'Var', (170, 179)) ('Ile76Val', 'Var', (149, 157)) ('Asn492Ile', 'SUBSTITUTION', 'None', (184, 193)) ('prolactinoma', 'Disease', 'MESH:D015175', (120, 132)) 32794 30445560 Thus, >400 individuals were heterozygous for the PRLR ECD variants (Ile76Val, n = 404, and Ile146Leu, n = 402) and <10 individuals were homozygous for the minor allele (Ile76Val, n = 7; Ile146Leu n = 10). ('Ile146Leu', 'Chemical', '-', (186, 195)) ('Ile146Leu', 'Var', (91, 100)) ('Ile76Val', 'Var', (68, 76)) ('Ile76Val', 'Chemical', '-', (169, 177)) ('Ile146Leu', 'Chemical', '-', (91, 100)) ('Ile76Val', 'Chemical', '-', (68, 76)) ('Ile76Val', 'Var', (169, 177)) 32795 30445560 However, measurement of prolactin from available sera revealed that neither the homozygous nor the heterozygous individuals for these Ile76Val or Ile146Leu PRLR variants had significant alterations in serum prolactin concentrations (Fig. ('Ile146Leu', 'Chemical', '-', (146, 155)) ('variants', 'Var', (161, 169)) ('Ile76Val', 'Var', (134, 142)) ('rat', 'Species', '10116', (190, 193)) ('alterations', 'Reg', (186, 197)) ('Ile146Leu', 'Var', (146, 155)) ('men', 'Species', '9606', (16, 19)) ('Ile76Val', 'Chemical', '-', (134, 142)) ('serum prolactin concentrations', 'MPA', (201, 231)) ('rat', 'Species', '10116', (224, 227)) 32796 30445560 Similarly, individuals heterozygous for the rare ICD PRLR variants, Glu376Gln (n = 17) and Asn492Ile (n = 17), did not have significant alterations in serum prolactin concentrations when compared to those without the variant (Fig. ('PRLR', 'Gene', (53, 57)) ('ICD', 'Disease', (49, 52)) ('Glu376Gln', 'Var', (68, 77)) ('Asn492Ile', 'SUBSTITUTION', 'None', (91, 100)) ('serum prolactin concentrations', 'MPA', (151, 181)) ('Asn492Ile', 'Var', (91, 100)) ('alterations', 'Reg', (136, 147)) ('rat', 'Species', '10116', (174, 177)) ('rat', 'Species', '10116', (140, 143)) ('ICD', 'Disease', 'OMIM:252500', (49, 52)) ('Glu376Gln', 'SUBSTITUTION', 'None', (68, 77)) 32797 30445560 8) together with the observed effects on pSTAT5 and pAkt signaling (Figs 4 and 5 and Supplementary Material, Table S1) of these variants indicate that the ICD rare variant Glu376Gln and the ECD low-frequency variants Ile76Val and Ile146Leu are likely benign polymorphisms and that the ICD rare variant Asn492Ile may be a likely low penetrance risk allele for the occurrence of prolactinoma. ('ICD', 'Disease', (155, 158)) ('Ile146Leu', 'Var', (230, 239)) ('Akt', 'Gene', '207', (53, 56)) ('ICD', 'Disease', (285, 288)) ('Glu376Gln', 'SUBSTITUTION', 'None', (172, 181)) ('prolactinoma', 'Disease', (377, 389)) ('Asn492Ile', 'SUBSTITUTION', 'None', (302, 311)) ('Glu376Gln', 'Var', (172, 181)) ('men', 'Species', '9606', (91, 94)) ('Ile76Val', 'Var', (217, 225)) ('prolactinoma', 'Disease', 'MESH:D015175', (377, 389)) ('Akt', 'Gene', (53, 56)) ('Ile146Leu', 'Chemical', '-', (230, 239)) ('prolactinoma', 'Phenotype', 'HP:0040278', (377, 389)) ('Ile76Val', 'Chemical', '-', (217, 225)) ('ICD', 'Disease', 'OMIM:252500', (285, 288)) ('ICD', 'Disease', 'OMIM:252500', (155, 158)) ('Asn492Ile', 'Var', (302, 311)) 32798 30445560 Our study has (1) identified an association between the occurrence of prolactinoma and two germline PRLR variants, Glu376Gln and Asn492Ile, which are rare and in complete LD (Table 1 and Fig. ('prolactinoma', 'Disease', 'MESH:D015175', (70, 82)) ('Asn492Ile', 'Var', (129, 138)) ('Glu376Gln', 'SUBSTITUTION', 'None', (115, 124)) ('Glu376Gln', 'Var', (115, 124)) ('prolactinoma', 'Disease', (70, 82)) ('Asn492Ile', 'SUBSTITUTION', 'None', (129, 138)) ('prolactinoma', 'Phenotype', 'HP:0040278', (70, 82)) 32799 30445560 1); (2) shown that the Asn492Ile PRLR variant results in a gain of function, with increased signaling by the Akt pathway and proliferation (Fig. ('Asn492Ile', 'SUBSTITUTION', 'None', (23, 32)) ('Akt', 'Gene', '207', (109, 112)) ('rat', 'Species', '10116', (132, 135)) ('Asn492Ile', 'Var', (23, 32)) ('proliferation', 'CPA', (125, 138)) ('PRLR', 'Gene', (33, 37)) ('increased', 'PosReg', (82, 91)) ('Akt', 'Gene', (109, 112)) ('signaling', 'MPA', (92, 101)) ('gain', 'PosReg', (59, 63)) 32800 30445560 5); and (3) shown that an Akt inhibitor and everolimus, an mTOR inhibitor, can normalize the increased activity associated with the Asn492Ile PRLR variant (Fig. ('Asn492Ile', 'Var', (132, 141)) ('activity', 'MPA', (103, 111)) ('Akt', 'Gene', '207', (26, 29)) ('increased', 'PosReg', (93, 102)) ('everolimus', 'Chemical', 'MESH:D000068338', (44, 54)) ('Akt', 'Gene', (26, 29)) ('mTOR', 'Gene', '2475', (59, 63)) ('Asn492Ile', 'SUBSTITUTION', 'None', (132, 141)) ('mTOR', 'Gene', (59, 63)) 32802 30445560 Our findings of an association between PRLR variants and prolactinoma (Table 1) differ from those reported by a French study that did not find an association between PRLR variants and prolactinomas in 88 patients. ('patients', 'Species', '9606', (204, 212)) ('prolactinoma', 'Disease', (184, 196)) ('prolactinoma', 'Phenotype', 'HP:0040278', (184, 196)) ('PRLR', 'Gene', (39, 43)) ('prolactinoma', 'Disease', (57, 69)) ('prolactinoma', 'Disease', 'MESH:D015175', (184, 196)) ('prolactinoma', 'Phenotype', 'HP:0040278', (57, 69)) ('prolactinomas', 'Disease', 'MESH:D015175', (184, 197)) ('prolactinoma', 'Disease', 'MESH:D015175', (57, 69)) ('prolactinomas', 'Disease', (184, 197)) ('variants', 'Var', (44, 52)) ('variants', 'Var', (171, 179)) 32803 30445560 Importantly, the French study did not identify any of the three PRLR ICD rare variants (Glu376Gln, Arg453Trp and Asn492Ile) that were found in our study to have the strongest association with prolactinomas (Table 1). ('Arg453Trp', 'Var', (99, 108)) ('ICD', 'Disease', (69, 72)) ('prolactinomas', 'Disease', 'MESH:D015175', (192, 205)) ('Asn492Ile', 'SUBSTITUTION', 'None', (113, 122)) ('prolactinoma', 'Phenotype', 'HP:0040278', (192, 204)) ('prolactinomas', 'Disease', (192, 205)) ('Asn492Ile', 'Var', (113, 122)) ('association', 'Reg', (175, 186)) ('Arg453Trp', 'Chemical', '-', (99, 108)) ('Glu376Gln', 'Var', (88, 97)) ('Glu376Gln', 'SUBSTITUTION', 'None', (88, 97)) ('ICD', 'Disease', 'OMIM:252500', (69, 72)) 32806 30445560 Thus, in these patients, the frequency of succinate dehydrogenase complex, subunit A (SDHA) variants, was reported to differ markedly between PPGL cohorts, with the highest frequency observed in the Dutch population, which may potentially be due to the presence of a founder mutation Arg31Stop in SDHA. ('SDHA', 'Gene', '6389', (86, 90)) ('patients', 'Species', '9606', (15, 23)) ('Arg31Stop', 'SUBSTITUTION', 'None', (284, 293)) ('SDHA', 'Gene', '6389', (297, 301)) ('SDHA', 'Gene', (86, 90)) ('SDHA', 'Gene', (297, 301)) ('Arg31Stop', 'Var', (284, 293)) ('variants', 'Var', (92, 100)) 32807 30445560 Our results, which show a role for a PRLR mutation in the development of human prolactinomas (Table 1, Figs 1, 5, 6 and 7), are in agreement with the findings from mouse studies, which have reported that conventional Prlr knockout mice develop prolactinomas, although there is an apparent paradox in that both gain of function (in humans) and loss of function (in mouse) of PRLR can lead to prolactinoma formation. ('prolactinomas', 'Disease', 'MESH:D015175', (244, 257)) ('PRLR', 'Gene', (374, 378)) ('prolactinoma', 'Phenotype', 'HP:0040278', (391, 403)) ('prolactinoma', 'Disease', 'MESH:D015175', (244, 256)) ('loss of function', 'NegReg', (343, 359)) ('mouse', 'Species', '10090', (364, 369)) ('men', 'Species', '9606', (65, 68)) ('human', 'Species', '9606', (73, 78)) ('prolactinoma', 'Disease', (391, 403)) ('mutation', 'Var', (42, 50)) ('prolactinomas', 'Disease', (79, 92)) ('prolactinoma', 'Phenotype', 'HP:0040278', (79, 91)) ('men', 'Species', '9606', (136, 139)) ('mouse', 'Species', '10090', (164, 169)) ('humans', 'Species', '9606', (331, 337)) ('human', 'Species', '9606', (331, 336)) ('prolactinoma', 'Disease', (79, 91)) ('mice', 'Species', '10090', (231, 235)) ('prolactinomas', 'Disease', (244, 257)) ('prolactinoma', 'Disease', 'MESH:D015175', (391, 403)) ('prolactinoma', 'Phenotype', 'HP:0040278', (244, 256)) ('gain of function', 'PosReg', (310, 326)) ('prolactinomas', 'Disease', 'MESH:D015175', (79, 92)) ('prolactinoma', 'Disease', (244, 256)) ('prolactinoma', 'Disease', 'MESH:D015175', (79, 91)) 32810 30445560 For example, deletion of Prlr in different subtypes of TIDA neurons (i.e. ('deletion', 'Var', (13, 21)) ('TIDA', 'Chemical', '-', (55, 59)) ('Prlr', 'Gene', (25, 29)) 32813 30445560 Analysis of data available from the OBB cohort of healthy individuals revealed that four (Ile76Val, Ile146Leu, Glu376Gln and Asn492Ile) of the six germline PRLR variants identified in the prolactinoma patients (Table 1 and Supplementary Material, Table S1) occurred in >1 individual. ('Asn492Ile', 'Var', (125, 134)) ('Ile76Val', 'Chemical', '-', (90, 98)) ('patients', 'Species', '9606', (201, 209)) ('Ile146Leu', 'Chemical', '-', (100, 109)) ('prolactinoma', 'Disease', (188, 200)) ('Glu376Gln', 'Var', (111, 120)) ('Glu376Gln', 'SUBSTITUTION', 'None', (111, 120)) ('Ile146Leu', 'Var', (100, 109)) ('men', 'Species', '9606', (229, 232)) ('Asn492Ile', 'SUBSTITUTION', 'None', (125, 134)) ('Ile76Val', 'Var', (90, 98)) ('prolactinoma', 'Disease', 'MESH:D015175', (188, 200)) ('prolactinoma', 'Phenotype', 'HP:0040278', (188, 200)) ('PRLR', 'Gene', (156, 160)) ('occurred', 'Reg', (257, 265)) 32814 30445560 However, these PRLR variants were not associated with alterations in serum prolactin concentrations in healthy individuals (Fig. ('rat', 'Species', '10116', (92, 95)) ('variants', 'Var', (20, 28)) ('rat', 'Species', '10116', (58, 61)) ('serum prolactin concentrations', 'MPA', (69, 99)) 32815 30445560 The low-frequency PRLR variants Ile76Val and Ile146Leu, which did not alter PRLR function or only altered PRLR function at supraphysiological prolactin concentrations (Fig. ('Ile76Val', 'Chemical', '-', (32, 40)) ('Ile146Leu', 'Var', (45, 54)) ('Ile76Val', 'Var', (32, 40)) ('PRLR', 'Gene', (18, 22)) ('rat', 'Species', '10116', (159, 162)) ('Ile146Leu', 'Chemical', '-', (45, 54)) 32817 30445560 The rare Glu376Gln PRLR variant, which did not alter PRLR function (Fig. ('Glu376Gln', 'SUBSTITUTION', 'None', (9, 18)) ('Glu376Gln', 'Var', (9, 18)) ('PRLR', 'Gene', (19, 23)) 32818 30445560 5) but is in complete LD with the gain-of-function Asn492Ile mutant PRLR, is also likely to be a benign polymorphism, despite its highly significant association with prolactinomas (Table 1). ('prolactinoma', 'Phenotype', 'HP:0040278', (166, 178)) ('PRLR', 'Gene', (68, 72)) ('prolactinomas', 'Disease', 'MESH:D015175', (166, 179)) ('gain-of-function', 'PosReg', (34, 50)) ('prolactinomas', 'Disease', (166, 179)) ('Asn492Ile', 'SUBSTITUTION', 'None', (51, 60)) ('Asn492Ile', 'Var', (51, 60)) 32819 30445560 However, the possibility remains that this and other rare variants may have an effect on other pathways, such as the Ras/Raf MAPK and Src kinase pathways, which have been reported to be involved in PRLR signaling. ('variants', 'Var', (58, 66)) ('effect', 'Reg', (79, 85)) ('Raf', 'Gene', '22882', (121, 124)) ('Src kinase pathways', 'Pathway', (134, 153)) ('Raf', 'Gene', (121, 124)) 32820 30445560 In addition, these PRLR variants may have effects on receptor trafficking and degradation, which were not investigated by our study, and it therefore remains a possibility that these PRLR variants may have subtle effects on prolactinoma development in vivo that may not have been detectable by our in vitro assays. ('variants', 'Var', (188, 196)) ('men', 'Species', '9606', (244, 247)) ('prolactinoma', 'Phenotype', 'HP:0040278', (224, 236)) ('variants', 'Var', (24, 32)) ('effects', 'Reg', (42, 49)) ('prolactinoma', 'Disease', (224, 236)) ('receptor trafficking', 'MPA', (53, 73)) ('degradation', 'MPA', (78, 89)) ('PRLR', 'Gene', (183, 187)) ('prolactinoma', 'Disease', 'MESH:D015175', (224, 236)) ('effects', 'Reg', (213, 220)) ('PRLR', 'Gene', (19, 23)) 32821 30445560 The absence of elevated prolactin levels in individuals who have the rare Asn492Ile gain-of-function mutant PRLR in the OBB cohort indicates that this allele likely represents a low penetrance risk allele for the occurrence of prolactinoma and that the majority of individuals harboring this variant will remain asymptomatic. ('prolactinoma', 'Disease', 'MESH:D015175', (227, 239)) ('prolactinoma', 'Phenotype', 'HP:0040278', (227, 239)) ('gain-of-function', 'PosReg', (84, 100)) ('Asn492Ile', 'Var', (74, 83)) ('prolactin levels', 'MPA', (24, 40)) ('PRLR', 'Gene', (108, 112)) ('elevated prolactin', 'Phenotype', 'HP:0000870', (15, 33)) ('prolactinoma', 'Disease', (227, 239)) ('Asn492Ile', 'SUBSTITUTION', 'None', (74, 83)) 32823 30445560 the SDHA in paraganglioma and cadherin-related 23 in pituitary adenomas) in which rare germline heterozygous coding variants are overrepresented in cases relative to controls but are associated with apparent low-disease penetrance. ('pituitary adenomas', 'Disease', (53, 71)) ('variants', 'Var', (116, 124)) ('paraganglioma', 'Phenotype', 'HP:0002668', (12, 25)) ('overrepresented', 'PosReg', (129, 144)) ('SDHA', 'Gene', (4, 8)) ('paraganglioma', 'Disease', (12, 25)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (53, 71)) ('low-disease', 'Disease', 'MESH:D009800', (208, 219)) ('low-disease', 'Disease', (208, 219)) ('paraganglioma', 'Disease', 'MESH:D010235', (12, 25)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (53, 71)) ('SDHA', 'Gene', '6389', (4, 8)) ('cadherin-related 23', 'Gene', (30, 49)) ('cadherin-related 23', 'Gene', '64072', (30, 49)) 32824 30445560 Our studies have highlighted that a gain of functional activity within the pAkt pathway may be an important mechanism in pituitary tumorigenesis in patients with the Asn492Ile PRLR, and this may be analogous to the increased pAkt signaling that has been reported to have an etiological role in other neoplasms (e.g. ('patients', 'Species', '9606', (148, 156)) ('functional activity', 'MPA', (44, 63)) ('tumor', 'Disease', 'MESH:D009369', (131, 136)) ('neoplasms', 'Phenotype', 'HP:0002664', (300, 309)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('Akt', 'Gene', (76, 79)) ('neoplasms', 'Disease', 'MESH:D009369', (300, 309)) ('neoplasms', 'Disease', (300, 309)) ('gain', 'PosReg', (36, 40)) ('tumor', 'Disease', (131, 136)) ('Akt', 'Gene', '207', (226, 229)) ('Akt', 'Gene', '207', (76, 79)) ('Asn492Ile', 'SUBSTITUTION', 'None', (166, 175)) ('Akt', 'Gene', (226, 229)) ('Asn492Ile', 'Var', (166, 175)) 32826 30445560 Furthermore, our results demonstrated that inhibition of this pathway by pAkt or mTOR inhibition can normalize signaling and decrease proliferation of cells expressing the Asn492Ile variant. ('Asn492Ile', 'Var', (172, 181)) ('Akt', 'Gene', '207', (74, 77)) ('mTOR', 'Gene', '2475', (81, 85)) ('rat', 'Species', '10116', (141, 144)) ('rat', 'Species', '10116', (32, 35)) ('inhibition', 'NegReg', (43, 53)) ('Asn492Ile', 'SUBSTITUTION', 'None', (172, 181)) ('Akt', 'Gene', (74, 77)) ('mTOR', 'Gene', (81, 85)) ('normalize signaling', 'MPA', (101, 120)) ('decrease', 'NegReg', (125, 133)) ('proliferation', 'CPA', (134, 147)) 32828 30445560 Indeed, our observations that the PRLR Asn492Ile gain-of-function mutation was frequently observed in prolactinoma patients requiring pituitary surgery suggest a potential personalized treatment approach for patients whose prolactinomas are aggressive or do not respond to dopamine-agonist therapy. ('patients', 'Species', '9606', (115, 123)) ('Asn492Ile', 'SUBSTITUTION', 'None', (39, 48)) ('patients', 'Species', '9606', (208, 216)) ('Asn492Ile', 'Var', (39, 48)) ('prolactinomas', 'Disease', 'MESH:D015175', (223, 236)) ('prolactinoma', 'Disease', (102, 114)) ('prolactinomas', 'Disease', (223, 236)) ('men', 'Species', '9606', (190, 193)) ('prolactinoma', 'Disease', (223, 235)) ('dopamine', 'Chemical', 'MESH:D004298', (273, 281)) ('prolactinoma', 'Disease', 'MESH:D015175', (102, 114)) ('gain-of-function', 'PosReg', (49, 65)) ('prolactinoma', 'Phenotype', 'HP:0040278', (102, 114)) ('prolactinoma', 'Phenotype', 'HP:0040278', (223, 235)) ('prolactinoma', 'Disease', 'MESH:D015175', (223, 235)) 32831 30445560 In summary, our studies have identified that a gain-of-function PRLR mutation, which activates pAkt signaling, is associated with prolactinomas and that everolimus may represent a potential effective treatment in patients with prolactinomas resistant to currently used medical treatments. ('PRLR', 'Gene', (64, 68)) ('prolactinoma', 'Phenotype', 'HP:0040278', (227, 239)) ('gain-of-function', 'PosReg', (47, 63)) ('prolactinomas', 'Disease', 'MESH:D015175', (227, 240)) ('prolactinomas', 'Disease', (130, 143)) ('everolimus', 'Chemical', 'MESH:D000068338', (153, 163)) ('men', 'Species', '9606', (282, 285)) ('men', 'Species', '9606', (205, 208)) ('mutation', 'Var', (69, 77)) ('Akt', 'Gene', '207', (96, 99)) ('prolactinoma', 'Phenotype', 'HP:0040278', (130, 142)) ('prolactinomas', 'Disease', (227, 240)) ('patients', 'Species', '9606', (213, 221)) ('activates', 'PosReg', (85, 94)) ('prolactinomas', 'Disease', 'MESH:D015175', (130, 143)) ('Akt', 'Gene', (96, 99)) 32837 30445560 SIFT (http://sift.jcvi.org/) and Polyphen-2 (http://genetics.bwh.harvard.edu/pph2/) were used to predict the effect of amino acid substitutions. ('SIFT', 'Disease', 'None', (0, 4)) ('SIFT', 'Disease', (0, 4)) ('amino acid substitutions', 'Var', (119, 143)) 32838 30445560 Comparisons between the frequency of variants in the ExAc cohort and the prolactinoma cohort were performed by Fisher's exact test, and Bonferroni correction performed for multiple testing, using GraphPad Prism. ('variants', 'Var', (37, 45)) ('prolactinoma', 'Phenotype', 'HP:0040278', (73, 85)) ('prolactinoma cohort', 'Disease', 'MESH:D015175', (73, 92)) ('prolactinoma cohort', 'Disease', (73, 92)) 32844 30445560 Comparisons between the frequency of variants in the prolactinoma cohort and the OBB cohorts were performed using Fisher's exact test and Bonferroni correction for multiple comparisons. ('variants', 'Var', (37, 45)) ('prolactinoma', 'Phenotype', 'HP:0040278', (53, 65)) ('prolactinoma cohort', 'Disease', 'MESH:D015175', (53, 72)) ('prolactinoma cohort', 'Disease', (53, 72)) 32876 30445560 Comparisons between the frequency of variants in the prolactinoma cohort and the ExAC and OBB cohorts were performed using Fisher's exact test. ('variants', 'Var', (37, 45)) ('prolactinoma', 'Phenotype', 'HP:0040278', (53, 65)) ('prolactinoma cohort', 'Disease', 'MESH:D015175', (53, 72)) ('prolactinoma cohort', 'Disease', (53, 72)) 32877 30445560 Mean prolactin values from patients with each of the PRLR variants were compared with values from patients with the WT alleles by Student's t-test. ('variants', 'Var', (58, 66)) ('patients', 'Species', '9606', (27, 35)) ('prolactin', 'MPA', (5, 14)) ('patients', 'Species', '9606', (98, 106)) 32959 30460037 Chances for malignant paraganglioma increase with a mutation in the succinate dehydrogenase (SDHB) gene. ('malignant paraganglioma increase', 'Disease', (12, 44)) ('SDHB', 'Gene', (93, 97)) ('malignant paraganglioma increase', 'Disease', 'MESH:C565335', (12, 44)) ('mutation', 'Var', (52, 60)) ('SDHB', 'Gene', '6390', (93, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (22, 35)) 32968 30105105 Bilateral Pheochromocytomas in a Patient with Y175C Von Hippel-Lindau Mutation Von Hippel-Lindau (VHL) disease, caused by germline mutations in the VHL gene, is characterized by metachronously occurring tumors including pheochromocytoma, renal cell carcinoma (RCC), and hemangioblastoma. ('pheochromocytoma', 'Disease', 'MESH:D010673', (220, 236)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (238, 258)) ('RCC', 'Disease', 'MESH:C538614', (260, 263)) ('Bilateral Pheochromocytomas', 'Disease', (0, 27)) ('pheochromocytoma', 'Disease', (220, 236)) ('Von Hippel-Lindau', 'Gene', '7428', (52, 69)) ('Mutation', 'Var', (70, 78)) ('Von Hippel-Lindau', 'Gene', (52, 69)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (220, 236)) ('VHL', 'Gene', (148, 151)) ('Bilateral Pheochromocytomas', 'Disease', 'MESH:D010673', (0, 27)) ('tumors', 'Phenotype', 'HP:0002664', (203, 209)) ('Y175C', 'Var', (46, 51)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (270, 286)) ('hemangioblastoma', 'Disease', (270, 286)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (10, 27)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('renal cell carcinoma', 'Disease', (238, 258)) ('VHL', 'Gene', '7428', (148, 151)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (238, 258)) ('tumors', 'Disease', (203, 209)) ('Von Hippel-Lindau', 'Gene', '7428', (79, 96)) ('VHL', 'Gene', (98, 101)) ('Von Hippel-Lindau', 'Gene', (79, 96)) ('Y175C', 'Mutation', 'rs193922613', (46, 51)) ('tumors', 'Disease', 'MESH:D009369', (203, 209)) ('Von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (79, 110)) ('RCC', 'Phenotype', 'HP:0005584', (260, 263)) ('Patient', 'Species', '9606', (33, 40)) ('carcinoma', 'Phenotype', 'HP:0030731', (249, 258)) ('RCC', 'Disease', (260, 263)) ('VHL', 'Gene', '7428', (98, 101)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (270, 286)) 32971 30105105 VHL mutants with more severely reduced HIF degrading function carry a high risk of RCC, while mutants with preserved HIF degrading capacity do not cause RCC but still lead to other tumors. ('RCC', 'Disease', 'MESH:C538614', (83, 86)) ('RCC', 'Disease', (83, 86)) ('RCC', 'Phenotype', 'HP:0005584', (83, 86)) ('reduced', 'NegReg', (31, 38)) ('mutants', 'Var', (4, 11)) ('tumors', 'Disease', (181, 187)) ('lead to', 'Reg', (167, 174)) ('tumors', 'Disease', 'MESH:D009369', (181, 187)) ('RCC', 'Phenotype', 'HP:0005584', (153, 156)) ('tumors', 'Phenotype', 'HP:0002664', (181, 187)) ('RCC', 'Disease', 'MESH:C538614', (153, 156)) ('RCC', 'Disease', (153, 156)) ('HIF degrading function', 'MPA', (39, 61)) ('VHL', 'Gene', (0, 3)) ('VHL', 'Gene', '7428', (0, 3)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) 32973 30105105 We report a case of bilateral pheochromocytomas and no other VHL-related tumors in a patient with Y175C VHL and show that this mutant preserves the ability to degrade HIF in normal oxygen conditions but, similar to the wild-type VHL protein, loses its ability to degrade HIF under hypoxic conditions. ('VHL', 'Gene', '7428', (104, 107)) ('VHL', 'Gene', (229, 232)) ('degrade HIF', 'MPA', (263, 274)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('tumors', 'Disease', (73, 79)) ('bilateral pheochromocytomas', 'Disease', (20, 47)) ('hypoxic conditions', 'Disease', (281, 299)) ('VHL', 'Gene', '7428', (229, 232)) ('oxygen', 'Chemical', 'MESH:D010100', (181, 187)) ('VHL', 'Gene', (61, 64)) ('Y175C', 'Mutation', 'rs193922613', (98, 103)) ('loses', 'NegReg', (242, 247)) ('tumors', 'Disease', 'MESH:D009369', (73, 79)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (30, 46)) ('patient', 'Species', '9606', (85, 92)) ('VHL', 'Gene', '7428', (61, 64)) ('VHL', 'Gene', (104, 107)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (20, 47)) ('ability', 'MPA', (252, 259)) ('hypoxic conditions', 'Disease', 'MESH:D009135', (281, 299)) ('tumors', 'Phenotype', 'HP:0002664', (73, 79)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (30, 47)) ('Y175C', 'Var', (98, 103)) ('degrade HIF', 'MPA', (159, 170)) 32974 30105105 This study adds to the current understanding of the structure-function relationship of VHL mutations, which is important for risk stratification of future tumor development in the patients. ('tumor', 'Disease', 'MESH:D009369', (155, 160)) ('VHL', 'Gene', '7428', (87, 90)) ('tumor', 'Phenotype', 'HP:0002664', (155, 160)) ('tumor', 'Disease', (155, 160)) ('mutations', 'Var', (91, 100)) ('VHL', 'Gene', (87, 90)) ('patients', 'Species', '9606', (180, 188)) 32976 30105105 Germline mutations in VHL occur with a frequency of 1:36,000 in Europe and a 20% de novo rate. ('Germline mutations', 'Var', (0, 18)) ('VHL', 'Gene', '7428', (22, 25)) ('VHL', 'Gene', (22, 25)) 32977 30105105 People with VHL mutations metachronously develop various benign and malignant tumors. ('VHL', 'Gene', (12, 15)) ('tumors', 'Phenotype', 'HP:0002664', (78, 84)) ('malignant tumors', 'Disease', (68, 84)) ('develop', 'PosReg', (41, 48)) ('VHL', 'Gene', '7428', (12, 15)) ('malignant tumors', 'Disease', 'MESH:D018198', (68, 84)) ('mutations', 'Var', (16, 25)) ('People', 'Species', '9606', (0, 6)) ('tumor', 'Phenotype', 'HP:0002664', (78, 83)) 32988 30105105 Studies of over a dozen different VHL mutations have identified several phenotypic subtypes revealing a structure-function relationship in which the severity of the mutation predicts the likelihood of RCC. ('RCC', 'Disease', 'MESH:C538614', (201, 204)) ('RCC', 'Disease', (201, 204)) ('RCC', 'Phenotype', 'HP:0005584', (201, 204)) ('mutation', 'Var', (165, 173)) ('VHL', 'Gene', '7428', (34, 37)) ('VHL', 'Gene', (34, 37)) ('mutations', 'Var', (38, 47)) 32989 30105105 VHL mutants that retain the ability to downregulate HIFalpha are less likely to be associated with RCC than those that lose that ability. ('downregulate', 'NegReg', (39, 51)) ('mutants', 'Var', (4, 11)) ('RCC', 'Phenotype', 'HP:0005584', (99, 102)) ('VHL', 'Gene', (0, 3)) ('associated', 'Reg', (83, 93)) ('RCC', 'Disease', (99, 102)) ('RCC', 'Disease', 'MESH:C538614', (99, 102)) ('VHL', 'Gene', '7428', (0, 3)) 32990 30105105 Patients with type 1 VHL have deletion or truncation mutations that completely abolish any functional protein expression. ('truncation mutations', 'Var', (42, 62)) ('abolish', 'NegReg', (79, 86)) ('functional protein expression', 'MPA', (91, 120)) ('deletion', 'Var', (30, 38)) ('Patients', 'Species', '9606', (0, 8)) ('VHL', 'Gene', (21, 24)) ('VHL', 'Gene', '7428', (21, 24)) 32995 30105105 By contrast, type 2C mutations retain their ability to fully downregulate HIFalpha and present with only pheochromocytomas, indicating that HIFalpha-independent mechanisms are at play in the pathogenesis of VHL-related pheochromocytomas. ('VHL', 'Gene', (207, 210)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (105, 122)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (219, 236)) ('downregulate', 'NegReg', (61, 73)) ('pheochromocytomas', 'Disease', (219, 236)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (105, 121)) ('VHL', 'Gene', '7428', (207, 210)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (105, 122)) ('pheochromocytomas', 'Disease', (105, 122)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (219, 236)) ('HIFalpha', 'Protein', (74, 82)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (219, 235)) ('mutations', 'Var', (21, 30)) 32996 30105105 Some in vitro studies suggest that type 2C VHL mutants cause defective fibronectin matrix assembly, while retaining the ability to suppress HIFalpha and stop the growth of RCC cells in culture. ('fibronectin', 'Gene', '2335', (71, 82)) ('defective', 'NegReg', (61, 70)) ('stop', 'NegReg', (153, 157)) ('suppress', 'NegReg', (131, 139)) ('HIFalpha', 'MPA', (140, 148)) ('VHL', 'Gene', (43, 46)) ('growth', 'CPA', (162, 168)) ('fibronectin', 'Gene', (71, 82)) ('VHL', 'Gene', '7428', (43, 46)) ('defective fibronectin matrix', 'Phenotype', 'HP:0032463', (61, 89)) ('RCC', 'Disease', (172, 175)) ('RCC', 'Disease', 'MESH:C538614', (172, 175)) ('mutants', 'Var', (47, 54)) ('RCC', 'Phenotype', 'HP:0005584', (172, 175)) 33019 30105105 The patient was found to have a heterozygous germline mutation, c.524A>G in the VHL gene, corresponding to the Y175C substitution in the protein. ('c.524A>G', 'Mutation', 'rs193922613', (64, 72)) ('VHL', 'Gene', (80, 83)) ('Y175C', 'Var', (111, 116)) ('Y175C', 'Mutation', 'rs193922613', (111, 116)) ('VHL', 'Gene', '7428', (80, 83)) ('patient', 'Species', '9606', (4, 11)) ('c.524A>G', 'Var', (64, 72)) 33021 30105105 In order to better define the risk of RCC in this patient and others with this mutation, we assessed the ability of Y175C VHL to degrade HIFalpha in vitro. ('RCC', 'Disease', (38, 41)) ('RCC', 'Disease', 'MESH:C538614', (38, 41)) ('degrade', 'NegReg', (129, 136)) ('VHL', 'Gene', (122, 125)) ('Y175C', 'Mutation', 'rs193922613', (116, 121)) ('VHL', 'Gene', '7428', (122, 125)) ('Y175C', 'Var', (116, 121)) ('RCC', 'Phenotype', 'HP:0005584', (38, 41)) ('patient', 'Species', '9606', (50, 57)) ('HIFalpha', 'MPA', (137, 145)) 33022 30105105 Stable wild-type (WT) or Y175C VHL-expressing cells lines were generated by transfection and clonal selection of VHL-null 786-O cells derived from a human RCC as previously described. ('VHL', 'Gene', '7428', (31, 34)) ('RCC', 'Disease', (155, 158)) ('Y175C', 'Mutation', 'rs193922613', (25, 30)) ('Y175C', 'Var', (25, 30)) ('VHL', 'Gene', (113, 116)) ('VHL', 'Gene', '7428', (113, 116)) ('human', 'Species', '9606', (149, 154)) ('VHL', 'Gene', (31, 34)) ('RCC', 'Phenotype', 'HP:0005584', (155, 158)) ('WT', 'Disease', 'MESH:C536751', (18, 20)) ('RCC', 'Disease', 'MESH:C538614', (155, 158)) 33023 30105105 We detected HIF2alpha expression in the control VHL-null cell line, while stable overexpression of either WT or Y175C VHL resulted in the disappearance of HIF2alpha (Figure 2, left panel). ('VHL', 'Gene', '7428', (48, 51)) ('VHL', 'Gene', (118, 121)) ('HIF2alpha', 'Gene', (155, 164)) ('HIF2alpha', 'Gene', (12, 21)) ('VHL', 'Gene', '7428', (118, 121)) ('overexpression', 'PosReg', (81, 95)) ('HIF2alpha', 'Gene', '2034', (155, 164)) ('Y175C', 'Mutation', 'rs193922613', (112, 117)) ('WT', 'Disease', 'MESH:C536751', (106, 108)) ('disappearance', 'NegReg', (138, 151)) ('Y175C', 'Var', (112, 117)) ('VHL', 'Gene', (48, 51)) ('HIF2alpha', 'Gene', '2034', (12, 21)) 33024 30105105 To further characterize the function of Y175C VHL under hypoxic conditions, the cells were placed into a hypoxia incubator at 1% O2 for 24 hours. ('VHL', 'Gene', (46, 49)) ('hypoxia', 'Disease', (105, 112)) ('hypoxia', 'Disease', 'MESH:D000860', (105, 112)) ('VHL', 'Gene', '7428', (46, 49)) ('hypoxic conditions', 'Disease', (56, 74)) ('Y175C', 'Mutation', 'rs193922613', (40, 45)) ('hypoxic conditions', 'Disease', 'MESH:D009135', (56, 74)) ('O2', 'Chemical', 'MESH:D010100', (129, 131)) ('Y175C', 'Var', (40, 45)) 33026 30105105 The Y175C VHL similarly did not reduce HIF2alpha abundance in hypoxia. ('HIF2alpha', 'Gene', '2034', (39, 48)) ('abundance', 'MPA', (49, 58)) ('HIF2alpha', 'Gene', (39, 48)) ('hypoxia', 'Disease', 'MESH:D000860', (62, 69)) ('hypoxia', 'Disease', (62, 69)) ('VHL', 'Gene', (10, 13)) ('Y175C', 'Mutation', 'rs193922613', (4, 9)) ('VHL', 'Gene', '7428', (10, 13)) ('Y175C', 'Var', (4, 9)) 33027 30105105 HIF2alpha abundance was also similar in WT and Y175C VHL-expressing cells after 6 hours and 12 hours of hypoxia (data not shown). ('HIF2alpha', 'Gene', '2034', (0, 9)) ('WT', 'Disease', 'MESH:C536751', (40, 42)) ('VHL', 'Gene', (53, 56)) ('VHL', 'Gene', '7428', (53, 56)) ('HIF2alpha', 'Gene', (0, 9)) ('Y175C', 'Var', (47, 52)) ('hypoxia', 'Disease', 'MESH:D000860', (104, 111)) ('hypoxia', 'Disease', (104, 111)) ('Y175C', 'Mutation', 'rs193922613', (47, 52)) 33028 30105105 Thus, under both normoxic and hypoxic conditions, Y175C VHL functions similarly to the WT with regard to HIFalpha degradation. ('VHL', 'Gene', (56, 59)) ('hypoxic conditions', 'Disease', 'MESH:D009135', (30, 48)) ('VHL', 'Gene', '7428', (56, 59)) ('Y175C', 'Var', (50, 55)) ('Y175C', 'Mutation', 'rs193922613', (50, 55)) ('WT', 'Disease', 'MESH:C536751', (87, 89)) ('HIFalpha degradation', 'MPA', (105, 125)) ('hypoxic conditions', 'Disease', (30, 48)) 33030 30105105 Germline mutations in known susceptibility genes including SDHB (succinate dehydrogenase complex B) and others are identified in 11-13% of patients with sporadic pheochromocytomas. ('Germline mutations', 'Var', (0, 18)) ('succinate dehydrogenase complex B', 'Gene', '6390', (65, 98)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (162, 178)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (162, 179)) ('patients', 'Species', '9606', (139, 147)) ('identified', 'Reg', (115, 125)) ('succinate dehydrogenase complex B', 'Gene', (65, 98)) ('SDHB', 'Gene', '6390', (59, 63)) ('SDHB', 'Gene', (59, 63)) ('sporadic pheochromocytomas', 'Disease', 'MESH:D010673', (153, 179)) ('sporadic pheochromocytomas', 'Disease', (153, 179)) 33033 30105105 Although Y175C VHL has been reported in another family with a similar phenotype, its molecular function has not been studied to date. ('VHL', 'Gene', (15, 18)) ('Y175C', 'Var', (9, 14)) ('Y175C', 'Mutation', 'rs193922613', (9, 14)) ('VHL', 'Gene', '7428', (15, 18)) 33034 30105105 We have shown that the Y175C mutation preserves the ability of VHL to degrade HIFalpha under normal oxygen conditions. ('oxygen', 'Chemical', 'MESH:D010100', (100, 106)) ('Y175C', 'Var', (23, 28)) ('Y175C', 'Mutation', 'rs193922613', (23, 28)) ('VHL', 'Gene', (63, 66)) ('degrade HIFalpha', 'MPA', (70, 86)) ('ability', 'MPA', (52, 59)) ('VHL', 'Gene', '7428', (63, 66)) 33036 30105105 This is the first reported molecular study of Y175C VHL and it adds to the growing body of knowledge about various VHL mutants. ('VHL', 'Gene', (115, 118)) ('VHL', 'Gene', '7428', (52, 55)) ('Y175C', 'Mutation', 'rs193922613', (46, 51)) ('VHL', 'Gene', '7428', (115, 118)) ('Y175C', 'Var', (46, 51)) ('VHL', 'Gene', (52, 55)) 33038 30105105 Previously reported type 2C VHL mutants with pheochromocytoma as the only notable disease manifestation include L188V and V84L. ('L188V', 'Var', (112, 117)) ('V84L', 'Mutation', 'rs5030827', (122, 126)) ('L188V', 'Mutation', 'rs5030824', (112, 117)) ('V84L', 'Var', (122, 126)) ('man', 'Species', '9606', (90, 93)) ('pheochromocytoma', 'Disease', (45, 61)) ('VHL', 'Gene', (28, 31)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (45, 61)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (45, 61)) ('VHL', 'Gene', '7428', (28, 31)) 33039 30105105 Our case is similar to a previously described Spanish cohort with the same mutation that presented with pheochromocytomas in mutation carriers and no other VHL-associated tumors. ('tumors', 'Phenotype', 'HP:0002664', (171, 177)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (104, 121)) ('tumors', 'Disease', 'MESH:D009369', (171, 177)) ('mutation', 'Var', (75, 83)) ('VHL', 'Gene', '7428', (156, 159)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (104, 121)) ('pheochromocytomas', 'Disease', (104, 121)) ('tumor', 'Phenotype', 'HP:0002664', (171, 176)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (104, 120)) ('tumors', 'Disease', (171, 177)) ('VHL', 'Gene', (156, 159)) 33040 30105105 The authors of that study calculated the folding energy of Y175C VHL and found that it was only slightly higher than that of the wild-type, indicating that Y175C VHL is predicted to be fairly stable. ('VHL', 'Gene', (162, 165)) ('VHL', 'Gene', '7428', (65, 68)) ('VHL', 'Gene', '7428', (162, 165)) ('Y175C', 'Mutation', 'rs193922613', (156, 161)) ('Y175C', 'Var', (156, 161)) ('VHL', 'Gene', (65, 68)) ('Y175C', 'Var', (59, 64)) ('folding', 'MPA', (41, 48)) ('Y175C', 'Mutation', 'rs193922613', (59, 64)) 33042 30105105 Although HIFalpha degradation is better characterized, many studies have shown that VHL is also important in extracellular matrix assembly and cell membrane structure through regulating fibronectin and integrins, and loss of this function leads to tumor development as well. ('loss', 'Var', (217, 221)) ('tumor', 'Disease', (248, 253)) ('regulating', 'Reg', (175, 185)) ('VHL', 'Gene', (84, 87)) ('integrins', 'Protein', (202, 211)) ('VHL', 'Gene', '7428', (84, 87)) ('fibronectin', 'Gene', (186, 197)) ('tumor', 'Disease', 'MESH:D009369', (248, 253)) ('man', 'Species', '9606', (55, 58)) ('leads to', 'Reg', (239, 247)) ('tumor', 'Phenotype', 'HP:0002664', (248, 253)) ('fibronectin', 'Gene', '2335', (186, 197)) 33044 30105105 Mutants that escape this modification are involved in tumorigenesis despite adequate HIFalpha suppression. ('HIFalpha', 'MPA', (85, 93)) ('tumor', 'Disease', 'MESH:D009369', (54, 59)) ('involved', 'Reg', (42, 50)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) ('tumor', 'Disease', (54, 59)) ('Mutants', 'Var', (0, 7)) 33053 29333259 PPGLs are genetically heterogeneous tumours caused by mutations in over 20 distinct genes . ('tumours', 'Phenotype', 'HP:0002664', (36, 43)) ('tumours', 'Disease', 'MESH:D009369', (36, 43)) ('mutations', 'Var', (54, 63)) ('caused by', 'Reg', (44, 53)) ('tumours', 'Disease', (36, 43)) ('tumour', 'Phenotype', 'HP:0002664', (36, 42)) ('PPGLs', 'Disease', (0, 5)) 33054 29333259 A pathogenic mutation, either germline or somatic, can be identified in two-thirds of the tumours largely in a mutually exclusive manner . ('mutation', 'Var', (13, 21)) ('pathogenic', 'Reg', (2, 12)) ('tumour', 'Phenotype', 'HP:0002664', (90, 96)) ('tumours', 'Phenotype', 'HP:0002664', (90, 97)) ('tumours', 'Disease', 'MESH:D009369', (90, 97)) ('tumours', 'Disease', (90, 97)) 33065 29333259 In addition, since hereditary PPGLs often present as part of multi-tumour syndromes, mutation detection can also lead to planned surveillance and early diagnosis of co-occurring cancers in probands and in their mutation-carrier relatives . ('cancers', 'Disease', 'MESH:D009369', (178, 185)) ('cancers', 'Phenotype', 'HP:0002664', (178, 185)) ('mutation', 'Var', (85, 93)) ('cancers', 'Disease', (178, 185)) ('multi-tumour syndromes', 'Disease', (61, 83)) ('tumour', 'Phenotype', 'HP:0002664', (67, 73)) ('PPGLs', 'Disease', (30, 35)) ('multi-tumour syndromes', 'Disease', 'MESH:D015140', (61, 83)) 33090 29333259 The best-known genetic predictor of malignancy is the presence of a germline mutation of the succinate dehydrogenase subunit B gene, SDHB ( Table 2). ('SDHB', 'Gene', '6390', (133, 137)) ('presence', 'Var', (54, 62)) ('SDHB', 'Gene', (133, 137)) ('malignancy', 'Disease', 'MESH:D009369', (36, 46)) ('malignancy', 'Disease', (36, 46)) 33092 29333259 Most patients with a germline SDHB mutation have extra-adrenal disease and approximately 50% of these patients progress to metastatic disease . ('extra-adrenal disease', 'Disease', (49, 70)) ('patients', 'Species', '9606', (5, 13)) ('patients', 'Species', '9606', (102, 110)) ('metastatic disease', 'CPA', (123, 141)) ('extra-adrenal disease', 'Disease', 'MESH:D010236', (49, 70)) ('SDHB', 'Gene', '6390', (30, 34)) ('adrenal disease', 'Phenotype', 'HP:0000834', (55, 70)) ('SDHB', 'Gene', (30, 34)) ('mutation', 'Var', (35, 43)) ('progress', 'Reg', (111, 119)) 33093 29333259 In addition, patients with SDHB mutant malignant PPGLs have shorter median overall survival than non- SDHB mutant metastatic PPGLs (42 versus 244 months after the diagnosis of the first metastasis, respectively) . ('patients', 'Species', '9606', (13, 21)) ('SDHB', 'Gene', '6390', (102, 106)) ('SDHB', 'Gene', '6390', (27, 31)) ('mutant', 'Var', (32, 38)) ('SDHB', 'Gene', (102, 106)) ('overall survival', 'MPA', (75, 91)) ('shorter', 'NegReg', (60, 67)) ('SDHB', 'Gene', (27, 31)) 33094 29333259 Mutations in other SDH component genes: SDHA, SDHC, SDHD, and SDHAF2:also lead to paragangliomas or phaeochromocytomas or both; however, malignancy is rarely associated with these tumours. ('paragangliomas', 'Phenotype', 'HP:0002668', (82, 96)) ('malignancy', 'Disease', (137, 147)) ('tumours', 'Disease', 'MESH:D009369', (180, 187)) ('tumours', 'Phenotype', 'HP:0002664', (180, 187)) ('SDH', 'Gene', (52, 55)) ('SDH', 'Gene', '6390', (40, 43)) ('SDHA', 'Gene', (40, 44)) ('SDHD', 'Disease', 'None', (52, 56)) ('SDH', 'Gene', '6390', (62, 65)) ('SDH', 'Gene', (19, 22)) ('SDHA', 'Gene', '6389', (40, 44)) ('SDH', 'Gene', '6390', (46, 49)) ('Mutations', 'Var', (0, 9)) ('SDHC', 'Gene', '6391', (46, 50)) ('SDH', 'Gene', (40, 43)) ('SDHAF2', 'Gene', (62, 68)) ('lead to', 'Reg', (74, 81)) ('SDHA', 'Gene', (62, 66)) ('SDHAF2', 'Gene', '54949', (62, 68)) ('SDH', 'Gene', (62, 65)) ('SDH', 'Gene', (46, 49)) ('SDHA', 'Gene', '6389', (62, 66)) ('malignancy', 'Disease', 'MESH:D009369', (137, 147)) ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('tumours', 'Disease', (180, 187)) ('SDHD', 'Disease', (52, 56)) ('paragangliomas or phaeochromocytomas', 'Disease', (82, 118)) ('SDH', 'Gene', '6390', (52, 55)) ('paragangliomas or phaeochromocytomas', 'Disease', 'MESH:D010235', (82, 118)) ('tumour', 'Phenotype', 'HP:0002664', (180, 186)) ('SDH', 'Gene', '6390', (19, 22)) ('SDHC', 'Gene', (46, 50)) 33095 29333259 SDH mutations cause a metabolic imbalance that leads to a DNA and histone hypermethylation phenotype; genes targeted by aberrant methylation are thought to be required for tumour development in these models . ('leads to', 'Reg', (47, 55)) ('tumour', 'Phenotype', 'HP:0002664', (172, 178)) ('SDH', 'Gene', (0, 3)) ('cause', 'Reg', (14, 19)) ('tumour', 'Disease', 'MESH:D009369', (172, 178)) ('imbalance', 'Phenotype', 'HP:0002172', (32, 41)) ('tumour', 'Disease', (172, 178)) ('mutations', 'Var', (4, 13)) ('metabolic imbalance', 'MPA', (22, 41)) ('SDH', 'Gene', '6390', (0, 3)) ('DNA and histone hypermethylation phenotype', 'MPA', (58, 100)) 33096 29333259 However, why mutations in SDHB, but not in the other SDH genes, specifically confer increased risk of malignancy is not known. ('SDH', 'Gene', (53, 56)) ('malignancy', 'Disease', (102, 112)) ('SDHB', 'Gene', '6390', (26, 30)) ('SDH', 'Gene', '6390', (53, 56)) ('SDHB', 'Gene', (26, 30)) ('SDH', 'Gene', '6390', (26, 29)) ('mutations', 'Var', (13, 22)) ('malignancy', 'Disease', 'MESH:D009369', (102, 112)) ('SDH', 'Gene', (26, 29)) 33097 29333259 Notably, despite its unquestionable role as an independent risk factor for malignancy, two-thirds of metastatic PPGLs do not have SDHB mutations, implying the existence of other markers of poor prognosis . ('SDHB', 'Gene', '6390', (130, 134)) ('not', 'NegReg', (121, 124)) ('mutations', 'Var', (135, 144)) ('SDHB', 'Gene', (130, 134)) ('malignancy', 'Disease', 'MESH:D009369', (75, 85)) ('malignancy', 'Disease', (75, 85)) 33099 29333259 A recent integrated analysis of PPGLs as part of The Cancer Genome Atlas (TCGA) using genomic, mRNA, and microRNA expression, methylation profiling, and protein expression arrays identified new pathogenic lesions in PPGLs . ('Cancer Genome Atlas', 'Disease', (53, 72)) ('Cancer', 'Phenotype', 'HP:0002664', (53, 59)) ('pathogenic', 'Reg', (194, 204)) ('Cancer Genome Atlas', 'Disease', 'MESH:D009369', (53, 72)) ('PPGLs', 'Gene', (216, 221)) ('lesions', 'Var', (205, 212)) 33101 29333259 Those included SDHB mutation, inclusion in the hypermethylation subtype, and inclusion in the pseudohypoxia subtype; the latter two are the groups that contain SDHB mutant tumours. ('SDHB', 'Gene', '6390', (15, 19)) ('SDHB', 'Gene', '6390', (160, 164)) ('mutant', 'Var', (165, 171)) ('tumour', 'Phenotype', 'HP:0002664', (172, 178)) ('SDHB', 'Gene', (160, 164)) ('mutation', 'Var', (20, 28)) ('SDHB', 'Gene', (15, 19)) ('tumours', 'Phenotype', 'HP:0002664', (172, 179)) ('tumours', 'Disease', 'MESH:D009369', (172, 179)) ('pseudohypoxia subtype', 'Disease', 'MESH:C535673', (94, 115)) ('pseudohypoxia subtype', 'Disease', (94, 115)) ('tumours', 'Disease', (172, 179)) 33102 29333259 Importantly, novel molecular markers were found: MAML3 (mastermind-like protein 3) fusions, SETD2 (SET domain containing 2) or ATRX somatic mutations, and WNT-related expression subtype, which comprise the tumours with MAML3 fusion tumours . ('SETD2', 'Gene', '29072', (92, 97)) ('tumours', 'Disease', (232, 239)) ('MAML3 fusion tumours', 'Disease', 'MESH:D000069337', (219, 239)) ('MAML3', 'Gene', '55534', (49, 54)) ('tumours', 'Phenotype', 'HP:0002664', (232, 239)) ('tumours', 'Disease', 'MESH:D009369', (232, 239)) ('mastermind-like protein 3', 'Gene', '55534', (56, 81)) ('MAML3', 'Gene', (219, 224)) ('mastermind-like protein 3', 'Gene', (56, 81)) ('tumour', 'Phenotype', 'HP:0002664', (232, 238)) ('tumours', 'Disease', (206, 213)) ('fusions', 'Var', (83, 90)) ('MAML3', 'Gene', '55534', (219, 224)) ('tumours', 'Phenotype', 'HP:0002664', (206, 213)) ('tumours', 'Disease', 'MESH:D009369', (206, 213)) ('mutations', 'Var', (140, 149)) ('MAML3 fusion tumours', 'Disease', (219, 239)) ('ATRX', 'Gene', (127, 131)) ('ATRX', 'Gene', '546', (127, 131)) ('SETD2', 'Gene', (92, 97)) ('tumour', 'Phenotype', 'HP:0002664', (206, 212)) ('MAML3', 'Gene', (49, 54)) 33103 29333259 Interestingly, almost all tumours carrying this fusion were phaeochromocytomas, in contrast with the predominant paraganglioma location of SDHB mutants, and represented a biological group distinct from the latter. ('mutants', 'Var', (144, 151)) ('SDHB', 'Gene', '6390', (139, 143)) ('phaeochromocytomas', 'Disease', (60, 78)) ('SDHB', 'Gene', (139, 143)) ('tumours', 'Disease', 'MESH:D009369', (26, 33)) ('tumours', 'Disease', (26, 33)) ('paraganglioma', 'Phenotype', 'HP:0002668', (113, 126)) ('paraganglioma', 'Disease', (113, 126)) ('phaeochromocytomas', 'Disease', 'MESH:D010673', (60, 78)) ('tumour', 'Phenotype', 'HP:0002664', (26, 32)) ('paraganglioma', 'Disease', 'MESH:D010235', (113, 126)) ('tumours', 'Phenotype', 'HP:0002664', (26, 33)) 33105 29333259 Genes targeted by methylation that may associate with metastatic tumours, including RBDP, have also been identified and will need to be independently verified . ('tumour', 'Phenotype', 'HP:0002664', (65, 71)) ('tumours', 'Phenotype', 'HP:0002664', (65, 72)) ('associate', 'Reg', (39, 48)) ('methylation', 'Var', (18, 29)) ('RBDP', 'Disease', (84, 88)) ('tumours', 'Disease', 'MESH:D009369', (65, 72)) ('tumours', 'Disease', (65, 72)) 33109 29333259 However, as not all patients with an SDHB mutation develop metastatic disease, even within the same family (that is, carriers of the same mutation), other risk factors, either inherited through different alleles or acquired, might exist . ('SDHB', 'Gene', '6390', (37, 41)) ('develop', 'Reg', (51, 58)) ('mutation', 'Var', (42, 50)) ('SDHB', 'Gene', (37, 41)) ('patients', 'Species', '9606', (20, 28)) ('metastatic disease', 'Disease', (59, 77)) 33137 29163991 Her vital signs briefly appeared to "normalize" with BP 120/80 mmHg and HR 90 bpm before tumor removal so both clevidipine and esmolol infusions were discontinued. ('BP 120/80 mmHg', 'Var', (53, 67)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('clevidipine', 'Chemical', 'MESH:C118563', (111, 122)) ('tumor removal', 'Disease', 'MESH:D009369', (89, 102)) ('esmolol', 'Chemical', 'MESH:C036604', (127, 134)) ('vital signs', 'MPA', (4, 15)) ('tumor removal', 'Disease', (89, 102)) 33177 29163991 Despite premedication of most patients with phenoxybenzamine and a beta-blocker, varying degrees of intraoperative hemodynamic lability occurred. ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (44, 60)) ('phenoxybenzamine', 'Var', (44, 60)) ('patients', 'Species', '9606', (30, 38)) ('intraoperative hemodynamic lability', 'Disease', (100, 135)) ('intraoperative hemodynamic lability', 'Disease', 'MESH:D005166', (100, 135)) 33180 29163991 It should never be started prior to alpha blockade because blockade of vasodilatory peripheral beta-adrenergic receptors with unopposed alpha-adrenergic receptor stimulation can lead to hypertensive crisis. ('lead to', 'Reg', (178, 185)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (186, 205)) ('hypertensive', 'Disease', 'MESH:D006973', (186, 198)) ('blockade', 'Var', (59, 67)) ('hypertensive', 'Disease', (186, 198)) 33231 26997629 The patient was discharged to home on enalapril 2.5 mg PO BID ( by mouth two times daily )and phenoxybenzamine 2.5 mg PO TID (by mouth three times daily) for blood pressure control, as well as potassium supplementation for hypokalemia. ('potassium', 'Chemical', 'MESH:D011188', (193, 202)) ('phenoxybenzamine', 'Var', (94, 110)) ('hypokalemia', 'Disease', (223, 234)) ('TID', 'Disease', (121, 124)) ('patient', 'Species', '9606', (4, 11)) ('hypokalemia', 'Disease', 'MESH:D007008', (223, 234)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (94, 110)) ('TID', 'Disease', 'None', (121, 124)) ('enalapril', 'Chemical', 'MESH:D004656', (38, 47)) ('hypokalemia', 'Phenotype', 'HP:0002900', (223, 234)) 33331 26912984 Increased uptake of fluorodeoxyglucose (FDG) on 18F FDG PET/CT is not specific to paragangliomas. ('paragangliomas', 'Phenotype', 'HP:0002668', (82, 96)) ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('fluorodeoxyglucose', 'Chemical', 'MESH:D019788', (20, 38)) ('FDG', 'Chemical', 'MESH:D019788', (52, 55)) ('FDG', 'Chemical', 'MESH:D019788', (40, 43)) ('Increased', 'PosReg', (0, 9)) ('uptake of fluorodeoxyglucose', 'MPA', (10, 38)) ('paragangliomas', 'Disease', 'MESH:D010235', (82, 96)) ('FDG', 'Var', (52, 55)) ('paragangliomas', 'Disease', (82, 96)) 33612 21507561 Dissection into an incorrect plane may produce troublesome bleeding. ('troublesome bleeding', 'Disease', (47, 67)) ('troublesome bleeding', 'Phenotype', 'HP:0001892', (47, 67)) ('Dissection', 'Var', (0, 10)) ('produce', 'Reg', (39, 46)) ('troublesome bleeding', 'Disease', 'MESH:D006470', (47, 67)) 33632 21507561 With these modifications, we typically do not have to mobilize the bowel on the right side and minimize bowel mobilization on the left. ('bowel', 'Disease', (67, 72)) ('modifications', 'Var', (11, 24)) ('bowel', 'Disease', 'MESH:D015212', (104, 109)) ('bowel', 'Disease', (104, 109)) ('bowel', 'Disease', 'MESH:D015212', (67, 72)) 33662 21507561 Other studies have demonstrated that laparoscopic approaches for adrenal surgery are associated with decreased blood loss, shortened convalescent time, and decreased need for postoperative analgesia, as compared with open adrenalectomy, and we have observed the same benefits in the current series compared with our open experience. ('convalescent', 'CPA', (133, 145)) ('adrenal', 'Disease', (65, 72)) ('decreased blood loss', 'Disease', 'MESH:D006473', (101, 121)) ('decreased', 'NegReg', (156, 165)) ('laparoscopic', 'Var', (37, 49)) ('decreased blood loss', 'Disease', (101, 121)) 33663 21507561 While this current report describing our technique does not yet demonstrate long-term oncologic efficacy, recent evidence suggests that partial adrenalectomy for pheochromocytoma may provide excellent, long-term, oncologic and functional outcomes. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (162, 178)) ('partial', 'Var', (136, 143)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (162, 178)) ('adrenalectomy for pheochromocytoma', 'Phenotype', 'HP:0006748', (144, 178)) ('pheochromocytoma', 'Disease', (162, 178)) 33740 33680468 Both blood and urine metanephrines were ordered and found to be abnormal: urine total, blood metanephrines, and blood normetanephrines were elevated at 9841 mcg/24 h (lab reference range: normal 33-185 mcg/24 h), serum 13 nmol/L (lab reference range <0.5 nmol/L), and 5.8 nmol/L (lab reference range <0.9 nmol/L), respectively. ('serum', 'MPA', (213, 218)) ('urine total', 'MPA', (74, 85)) ('metanephrines', 'Chemical', 'MESH:D008676', (21, 34)) ('normetanephrines', 'Chemical', 'MESH:D009647', (118, 134)) ('metanephrines', 'Chemical', 'MESH:D008676', (93, 106)) ('metanephrines', 'Chemical', 'MESH:D008676', (121, 134)) ('elevated', 'PosReg', (140, 148)) ('blood metanephrines', 'Disease', (87, 106)) ('9841 mcg/24', 'Var', (152, 163)) ('blood metanephrines', 'Disease', 'MESH:D007022', (87, 106)) ('blood normetanephrines', 'MPA', (112, 134)) 33741 33680468 The patient was subsequently referred to endocrinology with eventual tumor resection after treatment with phenoxybenzamine to 50 mg QID and metyrosine to 500 mg for 1 month prior to surgery. ('metyrosine', 'Chemical', 'MESH:D019805', (140, 150)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (106, 122)) ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('tumor', 'Disease', (69, 74)) ('patient', 'Species', '9606', (4, 11)) ('phenoxybenzamine', 'Var', (106, 122)) ('tumor', 'Disease', 'MESH:D009369', (69, 74)) 33742 33680468 Genetic testing revealed the patient was heterozygous for a pathogenic variant in RET (c.1826G>A (p. Cys609Tyr)) consistent with multiple endocrine neoplasia, type 2A (MEN2A). ('patient', 'Species', '9606', (29, 36)) ('c.1826G>A', 'Mutation', 'rs77939446', (87, 96)) ('RET', 'Gene', (82, 85)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (138, 157)) ('MEN2A', 'Gene', (168, 173)) ('MEN2A', 'Gene', '5979', (168, 173)) ('neoplasia', 'Phenotype', 'HP:0002664', (148, 157)) ('pathogenic', 'Reg', (60, 70)) ('c.1826G>A', 'Var', (87, 96)) ('Cys609Tyr', 'SUBSTITUTION', 'None', (101, 110)) ('RET', 'Gene', '5979', (82, 85)) ('Cys609Tyr', 'Var', (101, 110)) ('multiple endocrine neoplasia, type 2A', 'Gene', '5979', (129, 166)) 33770 33680468 Although testing was helpful in this case, inexperienced labs or personnel should proceed with caution as severe hypertension (>250 mmHg systolic or 125 mmHg diastolic, or blood pressure higher than can be measure by equipment) is an indication to discontinue a test or not test at all as it could lead to patient decompensation. ('hypertension', 'Disease', (113, 125)) ('hypertension', 'Phenotype', 'HP:0000822', (113, 125)) ('lead', 'Reg', (298, 302)) ('>250 mmHg', 'Var', (127, 136)) ('blood pressure', 'MPA', (172, 186)) ('hypertension', 'Disease', 'MESH:D006973', (113, 125)) ('patient', 'Species', '9606', (306, 313)) 33775 33443647 However, somatostatin receptor (SSTR) expression is not unique to NET, and therefore, [68 Ga]Ga-DOTATATE PET/CT may have oncological application in other tumours. ('tumour', 'Phenotype', 'HP:0002664', (154, 160)) ('tumours', 'Phenotype', 'HP:0002664', (154, 161)) ('Ga', 'Chemical', 'MESH:D005708', (93, 95)) ('SSTR', 'Gene', (32, 36)) ('Ga', 'Chemical', 'MESH:D005708', (90, 92)) ('tumours', 'Disease', 'MESH:D009369', (154, 161)) ('tumours', 'Disease', (154, 161)) ('Ga-DOTATATE', 'Chemical', '-', (93, 104)) ('[68 Ga]Ga-DOTATATE', 'Var', (86, 104)) 33781 33443647 However, [68 Ga]Ga-DOTATATE PET/CT demonstrated intense tracer uptake in a synchronous paraganglioma in one case and a metachronous paraganglioma in another case with wtGIST. ('[68 Ga]Ga-DOTATATE', 'Var', (9, 27)) ('metachronous paraganglioma', 'Disease', 'MESH:D016609', (119, 145)) ('Ga-DOTATATE', 'Chemical', '-', (16, 27)) ('synchronous paraganglioma', 'Disease', (75, 100)) ('synchronous paraganglioma', 'Disease', 'MESH:D009378', (75, 100)) ('metachronous paraganglioma', 'Disease', (119, 145)) ('paraganglioma', 'Phenotype', 'HP:0002668', (87, 100)) ('Ga', 'Chemical', 'MESH:D005708', (16, 18)) ('tracer uptake', 'MPA', (56, 69)) ('paraganglioma', 'Phenotype', 'HP:0002668', (132, 145)) ('Ga', 'Chemical', 'MESH:D005708', (13, 15)) 33784 33443647 Gastrointestinal stromal tumours (GIST) are the most common mesenchymal tumours of the gastrointestinal tract, and the majority of adult onset GIST, so-called 'tyrosine kinase mutant' GIST (TK-mutant GIST), are driven by activating somatic mutations in the KIT or PDGFRA genes. ('Gastrointestinal stromal tumours', 'Disease', 'MESH:D046152', (0, 32)) ('Gastrointestinal stromal tumours', 'Disease', (0, 32)) ('PDGFRA', 'Gene', (264, 270)) ('adult onset GIST', 'Disease', (131, 147)) ('mutations', 'Var', (240, 249)) ('mesenchymal tumours', 'Disease', 'MESH:D009369', (60, 79)) ('tumour', 'Phenotype', 'HP:0002664', (72, 78)) ('PDGFRA', 'Gene', '5156', (264, 270)) ('tumours', 'Phenotype', 'HP:0002664', (72, 79)) ('tumours', 'Phenotype', 'HP:0002664', (25, 32)) ('tumour', 'Phenotype', 'HP:0002664', (25, 31)) ('mesenchymal tumours', 'Disease', (60, 79)) ('KIT', 'Gene', '3815', (257, 260)) ('activating', 'PosReg', (221, 231)) ('KIT', 'Gene', (257, 260)) ('tumours of the gastrointestinal tract', 'Phenotype', 'HP:0007378', (72, 109)) 33785 33443647 Wild-type GIST (wtGIST) refers to tumours that are negative for KIT and PDGFRA gene mutations and account for 15% of adult and 85% of paediatric GIST. ('PDGFRA', 'Gene', '5156', (72, 78)) ('PDGFRA', 'Gene', (72, 78)) ('KIT', 'Gene', '3815', (64, 67)) ('mutations', 'Var', (84, 93)) ('tumours', 'Phenotype', 'HP:0002664', (34, 41)) ('tumours', 'Disease', 'MESH:D009369', (34, 41)) ('KIT', 'Gene', (64, 67)) ('tumours', 'Disease', (34, 41)) ('tumour', 'Phenotype', 'HP:0002664', (34, 40)) 33788 33443647 SDH deficient (dSDH) wtGIST is the most common subcategory of wtGIST, and these tumours are driven by inherited germline mutations in one of the SDHx genes (SDHA/B/C/D) or can occur sporadically following epigenetic silencing of the SDHC gene. ('mutations', 'Var', (121, 130)) ('SDH', 'Gene', (233, 236)) ('SDH', 'Gene', (145, 148)) ('SDH', 'Gene', '6390', (16, 19)) ('epigenetic silencing', 'Var', (205, 225)) ('SDHC', 'Gene', '6391', (233, 237)) ('SDH', 'Gene', '6390', (0, 3)) ('SDH', 'Gene', '6390', (157, 160)) ('SDH', 'Gene', (16, 19)) ('SDHA', 'Gene', (157, 161)) ('SDHC', 'Gene', (233, 237)) ('tumours', 'Disease', (80, 87)) ('SDH', 'Gene', (0, 3)) ('tumour', 'Phenotype', 'HP:0002664', (80, 86)) ('SDHA', 'Gene', '6389', (157, 161)) ('tumours', 'Phenotype', 'HP:0002664', (80, 87)) ('SDH', 'Gene', '6390', (233, 236)) ('SDH', 'Gene', '6390', (145, 148)) ('tumours', 'Disease', 'MESH:D009369', (80, 87)) ('SDH deficient (dSDH) wtGIST', 'Disease', 'MESH:D007153', (0, 27)) ('SDH', 'Gene', (157, 160)) 33790 33443647 Rarely, renal cell carcinoma and pituitary tumours can also develop in patients with germline SDHx gene mutations. ('pituitary tumours', 'Disease', 'MESH:D010911', (33, 50)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (8, 28)) ('SDH', 'Gene', '6390', (94, 97)) ('mutations', 'Var', (104, 113)) ('tumours', 'Phenotype', 'HP:0002664', (43, 50)) ('pituitary tumours', 'Disease', (33, 50)) ('patients', 'Species', '9606', (71, 79)) ('carcinoma', 'Phenotype', 'HP:0030731', (19, 28)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (8, 28)) ('SDH', 'Gene', (94, 97)) ('tumour', 'Phenotype', 'HP:0002664', (43, 49)) ('renal cell carcinoma', 'Disease', (8, 28)) 33797 33443647 Recent case reports evaluating genetically profiled tumours indicate that high SSTR2 receptor overexpression can be found in KIT mutant GIST as well as in dSDH wtGIST. ('overexpression', 'PosReg', (94, 108)) ('SSTR2', 'Gene', (79, 84)) ('tumours', 'Disease', (52, 59)) ('KIT', 'Gene', (125, 128)) ('tumour', 'Phenotype', 'HP:0002664', (52, 58)) ('SDH', 'Gene', '6390', (156, 159)) ('SSTR2', 'Gene', '6752', (79, 84)) ('tumours', 'Disease', 'MESH:D009369', (52, 59)) ('tumours', 'Phenotype', 'HP:0002664', (52, 59)) ('KIT', 'Gene', '3815', (125, 128)) ('SDH', 'Gene', (156, 159)) ('mutant', 'Var', (129, 135)) 33821 33443647 Five patients (41.6%) had a pathogenic germline SDHx variant, one patient had a variant of uncertain significance in the SDHA gene, and two patients had a confirmed SDHC epimutation. ('SDH', 'Gene', '6390', (165, 168)) ('patient', 'Species', '9606', (5, 12)) ('SDHC', 'Gene', (165, 169)) ('patients', 'Species', '9606', (5, 13)) ('SDH', 'Gene', '6390', (48, 51)) ('SDH', 'Gene', '6390', (121, 124)) ('variant', 'Var', (53, 60)) ('SDHC', 'Gene', '6391', (165, 169)) ('SDH', 'Gene', (165, 168)) ('patient', 'Species', '9606', (140, 147)) ('patient', 'Species', '9606', (66, 73)) ('SDHA', 'Gene', (121, 125)) ('SDH', 'Gene', (48, 51)) ('SDH', 'Gene', (121, 124)) ('patients', 'Species', '9606', (140, 148)) ('pathogenic', 'Reg', (28, 38)) ('SDHA', 'Gene', '6389', (121, 125)) 33823 33443647 Tumour tissue for SSTR2 IHC was performed on 54 tumour samples and this included tumour samples from 8/12 (66.6%) patients who had [68 Ga]Ga-DOTATATE PET/CT imaging and 47 tumour samples from individuals who did not have [68 Ga]Ga-DOTATATE PET/CT imaging. ('tumour', 'Phenotype', 'HP:0002664', (172, 178)) ('SSTR2', 'Gene', (18, 23)) ('Ga', 'Chemical', 'MESH:D005708', (135, 137)) ('SSTR2', 'Gene', '6752', (18, 23)) ('tumour', 'Disease', 'MESH:D009369', (172, 178)) ('tumour', 'Disease', (172, 178)) ('Tumour', 'Phenotype', 'HP:0002664', (0, 6)) ('Ga-DOTATATE', 'Chemical', '-', (138, 149)) ('Ga', 'Chemical', 'MESH:D005708', (228, 230)) ('patients', 'Species', '9606', (114, 122)) ('tumour', 'Phenotype', 'HP:0002664', (81, 87)) ('[68 Ga]Ga-DOTATATE', 'Var', (131, 149)) ('tumour', 'Disease', 'MESH:D009369', (81, 87)) ('tumour', 'Phenotype', 'HP:0002664', (48, 54)) ('tumour', 'Disease', (81, 87)) ('tumour', 'Disease', 'MESH:D009369', (48, 54)) ('tumour', 'Disease', (48, 54)) ('Ga-DOTATATE', 'Chemical', '-', (228, 239)) ('Ga', 'Chemical', 'MESH:D005708', (138, 140)) ('Ga', 'Chemical', 'MESH:D005708', (225, 227)) 33847 33443647 Notably, SSTR2 expression was also found to be low or absent in an additional 46 tumour samples, including 23 TK-mutant GIST and an additional 23 wtGIST samples. ('tumour', 'Disease', 'MESH:D009369', (81, 87)) ('TK-mutant', 'Var', (110, 119)) ('tumour', 'Disease', (81, 87)) ('SSTR2', 'Gene', (9, 14)) ('expression', 'MPA', (15, 25)) ('absent', 'NegReg', (54, 60)) ('SSTR2', 'Gene', '6752', (9, 14)) ('tumour', 'Phenotype', 'HP:0002664', (81, 87)) 33848 33443647 A previous study investigating the expression of SSTR1-5 in TK-mutant GIST demonstrated expression of SSTR1-5 using both quantitative real-time polymerase chain reaction (qPCR) and IHC. ('SSTR1-5', 'Gene', '6751;6752;6753;6754;6755', (102, 109)) ('SSTR1-5', 'Gene', '6751;6752;6753;6754;6755', (49, 56)) ('SSTR1-5', 'Gene', (102, 109)) ('SSTR1-5', 'Gene', (49, 56)) ('expression', 'MPA', (88, 98)) ('TK-mutant', 'Var', (60, 69)) 33861 33443647 Patients with dSDH wtGIST due to a germline variant in SDHx or SDHC epimutations are at risk of multiple tumours including multifocal PPGL, pulmonary chondroma and renal cell carcinoma. ('pulmonary chondroma', 'Phenotype', 'HP:0031474', (140, 159)) ('carcinoma', 'Phenotype', 'HP:0030731', (175, 184)) ('renal cell carcinoma', 'Disease', (164, 184)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (164, 184)) ('tumours', 'Phenotype', 'HP:0002664', (105, 112)) ('SDH', 'Gene', '6390', (63, 66)) ('SDH', 'Gene', '6390', (55, 58)) ('SDH', 'Gene', '6390', (15, 18)) ('pulmonary chondroma', 'Disease', 'MESH:D002812', (140, 159)) ('pulmonary chondroma', 'Disease', (140, 159)) ('Patients', 'Species', '9606', (0, 8)) ('SDHC', 'Gene', '6391', (63, 67)) ('multiple tumours', 'Disease', 'MESH:D009369', (96, 112)) ('germline variant', 'Var', (35, 51)) ('epimutations', 'Var', (68, 80)) ('tumour', 'Phenotype', 'HP:0002664', (105, 111)) ('SDH', 'Gene', (63, 66)) ('SDH', 'Gene', (55, 58)) ('SDH', 'Gene', (15, 18)) ('multiple tumours', 'Disease', (96, 112)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (164, 184)) ('SDHC', 'Gene', (63, 67)) ('multifocal PPGL', 'Disease', (123, 138)) 33866 33443647 Notably, the location of PPGL in patients with germline SDHx mutations or SDHC epimutations can be anywhere from the skull base to the pelvis and dSDH PPGL also have a high malignant potential, increasing the risk for synchronous malignant primary tumours in one individual. ('SDH', 'Gene', (74, 77)) ('synchronous malignant primary tumours', 'Disease', (218, 255)) ('epimutations', 'Var', (79, 91)) ('patients', 'Species', '9606', (33, 41)) ('SDH', 'Gene', (147, 150)) ('SDH', 'Gene', '6390', (56, 59)) ('mutations', 'Var', (61, 70)) ('malignant potential', 'CPA', (173, 192)) ('synchronous malignant primary tumours', 'Disease', 'MESH:D009378', (218, 255)) ('PPGL', 'Gene', (25, 29)) ('tumour', 'Phenotype', 'HP:0002664', (248, 254)) ('SDH', 'Gene', '6390', (74, 77)) ('tumours', 'Phenotype', 'HP:0002664', (248, 255)) ('SDH', 'Gene', (56, 59)) ('SDHC', 'Gene', (74, 78)) ('SDH', 'Gene', '6390', (147, 150)) ('SDHC', 'Gene', '6391', (74, 78)) 33867 33443647 Therefore, as [18F]FDG PET/CT lacks the ability to differentiate between at risk tumour types in patients with SDHx mutations, there is an unmet need for sensitive and specific imaging modalities which are able to distinguish PPGL from wtGIST in this patient population in order to avoid multiple biopsies and inform appropriate management with proper use of molecular imaging. ('tumour', 'Disease', 'MESH:D009369', (81, 87)) ('tumour', 'Phenotype', 'HP:0002664', (81, 87)) ('SDH', 'Gene', '6390', (111, 114)) ('patient', 'Species', '9606', (251, 258)) ('tumour', 'Disease', (81, 87)) ('mutations', 'Var', (116, 125)) ('patient', 'Species', '9606', (97, 104)) ('SDH', 'Gene', (111, 114)) ('patients', 'Species', '9606', (97, 105)) 33919 32997281 In addition, genetic testing for succinate dehydrogenase mutations is recommended, because paragangliomas are potentially hereditary. ('paraganglioma', 'Phenotype', 'HP:0002668', (91, 104)) ('mutations', 'Var', (57, 66)) ('paragangliomas', 'Disease', 'MESH:D010235', (91, 105)) ('paragangliomas', 'Phenotype', 'HP:0002668', (91, 105)) ('paragangliomas', 'Disease', (91, 105)) 33936 32648580 In breast invasive carcinoma (BRCA) and liver hepatocellular carcinoma (LIHC), high YIF1B expression correlated with a poor disease-free interval (DFI), indicating a role in malignancy progression. ('liver hepatocellular carcinoma', 'Disease', 'MESH:D006528', (40, 70)) ('malignancy', 'Disease', 'MESH:D009369', (174, 184)) ('BRCA', 'Gene', (30, 34)) ('malignancy', 'Disease', (174, 184)) ('YIF1B', 'Gene', '90522', (84, 89)) ('breast invasive carcinoma', 'Phenotype', 'HP:0003002', (3, 28)) ('carcinoma', 'Phenotype', 'HP:0030731', (19, 28)) ('breast invasive carcinoma', 'Disease', (3, 28)) ('hepatocellular carcinoma', 'Phenotype', 'HP:0001402', (46, 70)) ('carcinoma', 'Phenotype', 'HP:0030731', (61, 70)) ('YIF1B', 'Gene', (84, 89)) ('expression', 'MPA', (90, 100)) ('high', 'Var', (79, 83)) ('disease-free', 'MPA', (124, 136)) ('liver hepatocellular carcinoma', 'Disease', (40, 70)) ('breast invasive carcinoma', 'Disease', 'MESH:D001943', (3, 28)) ('BRCA', 'Phenotype', 'HP:0003002', (30, 34)) ('BRCA', 'Gene', '672', (30, 34)) 33976 32648580 The following survival analyses, using patient data dichotomized for the median expression value in each cancer type (Figure 3), show that survival differences were all significant in OS-related cancer types, and that patients with high expression of YIF1B had worse outcomes (Figure 3). ('significant', 'Reg', (169, 180)) ('patient', 'Species', '9606', (39, 46)) ('YIF1B', 'Gene', (251, 256)) ('patient', 'Species', '9606', (218, 225)) ('patients', 'Species', '9606', (218, 226)) ('cancer', 'Disease', (105, 111)) ('cancer', 'Disease', 'MESH:D009369', (105, 111)) ('cancer', 'Disease', (195, 201)) ('cancer', 'Disease', 'MESH:D009369', (195, 201)) ('cancer', 'Phenotype', 'HP:0002664', (105, 111)) ('YIF1B', 'Gene', '90522', (251, 256)) ('high expression', 'Var', (232, 247)) ('cancer', 'Phenotype', 'HP:0002664', (195, 201)) 33980 32648580 In the following survival analysis, cancer types with high YIF1B expression again exhibited a worse prognosis in comparison with the low expression groups (Figure 5). ('cancer', 'Disease', 'MESH:D009369', (36, 42)) ('YIF1B', 'Gene', (59, 64)) ('high', 'Var', (54, 58)) ('cancer', 'Disease', (36, 42)) ('YIF1B', 'Gene', '90522', (59, 64)) ('cancer', 'Phenotype', 'HP:0002664', (36, 42)) 33990 32648580 Their corresponding linear regression graphs show that high YIF1B expression is linked to a possible increased infiltration level by immune cells. ('infiltration level by immune cells', 'MPA', (111, 145)) ('increased', 'PosReg', (101, 110)) ('expression', 'MPA', (66, 76)) ('YIF1B', 'Gene', '90522', (60, 65)) ('high', 'Var', (55, 59)) ('YIF1B', 'Gene', (60, 65)) 34000 32648580 The coefficient values would indicate that YIF1B expression positively correlates with high mutation status in COAD, BLCA and LIHC, but low mutation in THYM, LAML and ESCA (particularly THYM). ('COAD', 'Disease', 'MESH:D029424', (111, 115)) ('THYM', 'Phenotype', 'HP:0100522', (152, 156)) ('YIF1B', 'Gene', '90522', (43, 48)) ('COAD', 'Disease', (111, 115)) ('high mutation status', 'Var', (87, 107)) ('THYM', 'Phenotype', 'HP:0100522', (186, 190)) ('YIF1B', 'Gene', (43, 48)) ('ESCA', 'Phenotype', 'HP:0011459', (167, 171)) 34006 32648580 Having established a correlation between YIF1B expression and the mutation indicators, TMB and MSI, further investigation of links between YIF1B expression and tumorigenesis mechanisms was warranted, in particular a relationship with MMR defects and methylation of specific tumor suppression genes. ('MMR defects', 'Disease', (234, 245)) ('MMR defects', 'Disease', 'MESH:C536928', (234, 245)) ('YIF1B', 'Gene', '90522', (139, 144)) ('YIF1B', 'Gene', (41, 46)) ('tumor', 'Disease', 'MESH:D009369', (274, 279)) ('tumor', 'Disease', 'MESH:D009369', (160, 165)) ('TMB', 'Chemical', '-', (87, 90)) ('YIF1B', 'Gene', (139, 144)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('tumor', 'Phenotype', 'HP:0002664', (274, 279)) ('tumor', 'Disease', (274, 279)) ('tumor', 'Disease', (160, 165)) ('methylation', 'Var', (250, 261)) ('YIF1B', 'Gene', '90522', (41, 46)) 34016 32648580 In follow-on survival analysis, after dichotomizing patients according to their mean YIF1B expression value, patients in the high expression group had worse OS, which is consistent with in the results obtained using TCGA data (Supplementary Figure S1). ('YIF1B', 'Gene', (85, 90)) ('patients', 'Species', '9606', (109, 117)) ('YIF1B', 'Gene', '90522', (85, 90)) ('high', 'Var', (125, 129)) ('patients', 'Species', '9606', (52, 60)) 34021 32648580 A correlation with disease progression rates was identified for LIHC and BRCA, for which patients with high YIF1B expression suffered from early recurrence of tumor. ('BRCA', 'Phenotype', 'HP:0003002', (73, 77)) ('BRCA', 'Gene', '672', (73, 77)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('BRCA', 'Gene', (73, 77)) ('YIF1B', 'Gene', (108, 113)) ('tumor', 'Disease', (159, 164)) ('LIHC', 'Disease', (64, 68)) ('high', 'Var', (103, 107)) ('patients', 'Species', '9606', (89, 97)) ('expression', 'MPA', (114, 124)) ('tumor', 'Disease', 'MESH:D009369', (159, 164)) ('YIF1B', 'Gene', '90522', (108, 113)) 34023 32648580 Previous research has shown that YIF1B is involved in anterograde vesicle traffic in cells, transporting 'cargo' proteins (including the serotonin receptor HTR1A) from the endoplasmic reticulum to the cell membrane via the Golgi apparatus; such cell membrane localization being accelerated upon knocking out YIF1B in HeLa cells. ('YIF1B', 'Gene', '90522', (33, 38)) ('YIF1B', 'Gene', '90522', (308, 313)) ("transporting 'cargo' proteins", 'MPA', (92, 121)) ('serotonin', 'Chemical', 'MESH:D012701', (137, 146)) ('knocking out', 'Var', (295, 307)) ('YIF1B', 'Gene', (33, 38)) ('HTR1A', 'Gene', '3350', (156, 161)) ('YIF1B', 'Gene', (308, 313)) ('accelerated', 'PosReg', (278, 289)) ('HeLa', 'CellLine', 'CVCL:0030', (317, 321)) ('HTR1A', 'Gene', (156, 161)) 34026 32648580 A link to signaling pathways via HTR receptors is the likely reason for association of YIF1B mutations with functional changes to specific proteins in neuronal cells, causing encephalopathy, epilepsy and movement disorder. ('HTR', 'Gene', (33, 36)) ('movement disorder', 'Phenotype', 'HP:0100022', (204, 221)) ('mutations', 'Var', (93, 102)) ('specific proteins', 'MPA', (130, 147)) ('YIF1B', 'Gene', (87, 92)) ('link', 'Reg', (2, 6)) ('association', 'Interaction', (72, 83)) ('epilepsy and movement disorder', 'Disease', 'MESH:D004827', (191, 221)) ('encephalopathy', 'Disease', 'MESH:D001927', (175, 189)) ('epilepsy', 'Phenotype', 'HP:0001250', (191, 199)) ('HTR', 'Gene', '7012', (33, 36)) ('encephalopathy', 'Phenotype', 'HP:0001298', (175, 189)) ('YIF1B', 'Gene', '90522', (87, 92)) ('causing', 'Reg', (167, 174)) ('encephalopathy', 'Disease', (175, 189)) 34041 32648580 Furthermore, COAD patients with high MSI have demonstrated better checkpoint inhibitor responses and survival in both low and high clinical stages. ('high MSI', 'Var', (32, 40)) ('COAD', 'Disease', (13, 17)) ('better', 'PosReg', (59, 65)) ('COAD', 'Disease', 'MESH:D029424', (13, 17)) ('checkpoint inhibitor responses', 'MPA', (66, 96)) ('patients', 'Species', '9606', (18, 26)) ('survival', 'CPA', (101, 109)) 34053 32648580 For example, protein activity might be affected in normal or cancer cells by post-transcription modification and/or regulated proteolysis. ('regulated proteolysis', 'MPA', (116, 137)) ('affected', 'Reg', (39, 47)) ('cancer', 'Disease', 'MESH:D009369', (61, 67)) ('post-transcription modification', 'Var', (77, 108)) ('cancer', 'Disease', (61, 67)) ('cancer', 'Phenotype', 'HP:0002664', (61, 67)) ('activity', 'MPA', (21, 29)) ('protein', 'Protein', (13, 20)) 34068 32201516 Siglec-15 mutations are widely observed in tumors and interact with different genes in different cancer types. ('tumors', 'Phenotype', 'HP:0002664', (43, 49)) ('interact', 'Reg', (54, 62)) ('cancer', 'Disease', (97, 103)) ('cancer', 'Disease', 'MESH:D009369', (97, 103)) ('cancer', 'Phenotype', 'HP:0002664', (97, 103)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('tumors', 'Disease', (43, 49)) ('mutations', 'Var', (10, 19)) ('Siglec-15', 'Gene', (0, 9)) ('tumors', 'Disease', 'MESH:D009369', (43, 49)) 34104 32201516 COSMIC provided information on Siglec-15 mutations in different cancers, which included substitution missense, nonsense and synonymous mutations, and the results are depicted in pie charts. ('mutations', 'Var', (41, 50)) ('Siglec-15', 'Gene', (31, 40)) ('cancers', 'Disease', 'MESH:D009369', (64, 71)) ('cancers', 'Phenotype', 'HP:0002664', (64, 71)) ('cancers', 'Disease', (64, 71)) ('substitution missense', 'Var', (88, 109)) ('nonsense', 'Var', (111, 119)) ('cancer', 'Phenotype', 'HP:0002664', (64, 70)) 34105 32201516 Nonsense substitutions were found in biliary tract cancer (33.33%), breast cancer (25%) and lung cancer (16.67%), while substitution missense mutations were observed in biliary tract cancer (33.33%), breast cancer (75%), central nervous system cancer (33.33%), hematopoietic and lymphoid cancer (100%), endometrial cancer (100%), large intestine cancer (68.42%), liver cancer (25%), lung cancer (83.33%), esophageal cancer (75%), prostate cancer (100%), skin cancer (100%), stomach cancer (75%), thyroid cancer (100%) and upper aerodigestive tract cancer (60%). ('cancer', 'Disease', 'MESH:D009369', (459, 465)) ('endometrial cancer', 'Disease', (303, 321)) ('cancer', 'Phenotype', 'HP:0002664', (51, 57)) ('stomach cancer', 'Disease', (474, 488)) ('lung cancer', 'Phenotype', 'HP:0100526', (383, 394)) ('cancer', 'Disease', 'MESH:D009369', (369, 375)) ('biliary tract cancer', 'Disease', (37, 57)) ('cancer', 'Disease', 'MESH:D009369', (504, 510)) ('cancer', 'Phenotype', 'HP:0002664', (183, 189)) ('cancer', 'Phenotype', 'HP:0002664', (207, 213)) ('cancer', 'Disease', (388, 394)) ('lymphoid cancer', 'Phenotype', 'HP:0002665', (279, 294)) ('missense mutations', 'Var', (133, 151)) ('cancer', 'Disease', (315, 321)) ('central nervous system cancer', 'Phenotype', 'HP:0100006', (221, 250)) ('biliary tract cancer', 'Phenotype', 'HP:0100574', (37, 57)) ('breast cancer', 'Phenotype', 'HP:0003002', (200, 213)) ('biliary tract cancer', 'Disease', 'MESH:D001661', (37, 57)) ('breast cancer', 'Disease', 'MESH:D001943', (68, 81)) ('cancer', 'Disease', (75, 81)) ('cancer', 'Disease', (504, 510)) ('breast cancer', 'Disease', (200, 213)) ('cancer', 'Disease', (416, 422)) ('liver cancer', 'Phenotype', 'HP:0002896', (363, 375)) ('liver cancer', 'Disease', (363, 375)) ('cancer', 'Disease', 'MESH:D009369', (482, 488)) ('lymphoid cancer', 'Disease', 'MESH:D009369', (279, 294)) ('upper aerodigestive tract cancer', 'Disease', (522, 554)) ('cancer', 'Disease', (288, 294)) ('thyroid cancer', 'Disease', (496, 510)) ('cancer', 'Disease', 'MESH:D009369', (244, 250)) ('prostate cancer', 'Disease', 'MESH:D011471', (430, 445)) ('prostate cancer', 'Phenotype', 'HP:0012125', (430, 445)) ('cancer', 'Disease', (97, 103)) ('central nervous system cancer', 'Disease', (221, 250)) ('thyroid cancer', 'Disease', 'MESH:D013964', (496, 510)) ('biliary tract cancer', 'Disease', (169, 189)) ('cancer', 'Disease', 'MESH:D009369', (51, 57)) ('cancer', 'Disease', (482, 488)) ('cancer', 'Disease', (459, 465)) ('nervous system cancer', 'Phenotype', 'HP:0004375', (229, 250)) ('esophageal cancer', 'Disease', (405, 422)) ('cancer', 'Disease', (244, 250)) ('cancer', 'Disease', 'MESH:D009369', (183, 189)) ('cancer', 'Disease', 'MESH:D009369', (207, 213)) ('cancer', 'Disease', (369, 375)) ('substitutions', 'Var', (9, 22)) ('biliary tract cancer', 'Phenotype', 'HP:0100574', (169, 189)) ('breast cancer', 'Disease', 'MESH:D001943', (200, 213)) ('endometrial cancer', 'Phenotype', 'HP:0012114', (303, 321)) ('lung cancer', 'Disease', 'MESH:D008175', (92, 103)) ('cancer', 'Disease', 'MESH:D009369', (548, 554)) ('skin cancer', 'Disease', 'MESH:D012878', (454, 465)) ('cancer', 'Phenotype', 'HP:0002664', (75, 81)) ('cancer', 'Disease', (51, 57)) ('biliary tract cancer', 'Disease', 'MESH:D001661', (169, 189)) ('cancer', 'Disease', 'MESH:D009369', (346, 352)) ('upper aerodigestive tract cancer', 'Disease', 'MESH:D006258', (522, 554)) ('cancer', 'Disease', (548, 554)) ('cancer', 'Disease', 'MESH:D009369', (439, 445)) ('skin cancer', 'Disease', (454, 465)) ('prostate cancer', 'Disease', (430, 445)) ('cancer', 'Phenotype', 'HP:0002664', (97, 103)) ('stomach cancer', 'Disease', 'MESH:D013274', (474, 488)) ('lymphoid cancer', 'Disease', (279, 294)) ('lung cancer', 'Disease', (92, 103)) ('large intestine cancer', 'Phenotype', 'HP:0100834', (330, 352)) ('stomach cancer', 'Phenotype', 'HP:0012126', (474, 488)) ('cancer', 'Disease', (346, 352)) ('breast cancer', 'Phenotype', 'HP:0003002', (68, 81)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (496, 510)) ('central nervous system cancer', 'Disease', 'MESH:D002494', (221, 250)) ('cancer', 'Disease', 'MESH:D009369', (388, 394)) ('cancer', 'Disease', (439, 445)) ('lung cancer', 'Phenotype', 'HP:0100526', (92, 103)) ('cancer', 'Disease', 'MESH:D009369', (315, 321)) ('lung cancer', 'Disease', 'MESH:D008175', (383, 394)) ('endometrial cancer', 'Disease', 'MESH:D016889', (303, 321)) ('cancer', 'Disease', (183, 189)) ('cancer', 'Disease', 'MESH:D009369', (75, 81)) ('cancer', 'Disease', (207, 213)) ('cancer', 'Disease', 'MESH:D009369', (416, 422)) ('esophageal cancer', 'Disease', 'MESH:D004938', (405, 422)) ('cancer', 'Disease', 'MESH:D009369', (288, 294)) ('skin cancer', 'Phenotype', 'HP:0008069', (454, 465)) ('hematopoietic and', 'Disease', (261, 278)) ('lung cancer', 'Disease', (383, 394)) ('liver cancer', 'Disease', 'MESH:D006528', (363, 375)) ('cancer', 'Disease', 'MESH:D009369', (97, 103)) ('breast cancer', 'Disease', (68, 81)) 34106 32201516 Additionally, synonymous substitution mutations appeared in biliary tract cancer (33.33%), central nervous system cancer (66.67%), large intestine cancer (36.84%), liver cancer (75%), esophageal cancer (25%), parathyroid cancer (100%), stomach cancer (25%) and upper aerodigestive tract cancer (40%). ('cancer', 'Disease', 'MESH:D009369', (221, 227)) ('cancer', 'Phenotype', 'HP:0002664', (147, 153)) ('cancer', 'Disease', (170, 176)) ('cancer', 'Disease', (287, 293)) ('liver cancer', 'Disease', 'MESH:D006528', (164, 176)) ('cancer', 'Disease', 'MESH:D009369', (195, 201)) ('upper aerodigestive tract cancer', 'Disease', (261, 293)) ('cancer', 'Disease', (74, 80)) ('cancer', 'Phenotype', 'HP:0002664', (114, 120)) ('cancer', 'Phenotype', 'HP:0002664', (170, 176)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (213, 227)) ('synonymous substitution mutations', 'Var', (14, 47)) ('cancer', 'Phenotype', 'HP:0002664', (74, 80)) ('cancer', 'Disease', 'MESH:D009369', (244, 250)) ('nervous system cancer', 'Phenotype', 'HP:0004375', (99, 120)) ('liver cancer', 'Phenotype', 'HP:0002896', (164, 176)) ('biliary tract cancer', 'Disease', (60, 80)) ('liver cancer', 'Disease', (164, 176)) ('upper aerodigestive tract cancer', 'Disease', 'MESH:D006258', (261, 293)) ('stomach cancer', 'Disease', 'MESH:D013274', (236, 250)) ('stomach cancer', 'Phenotype', 'HP:0012126', (236, 250)) ('cancer', 'Disease', 'MESH:D009369', (147, 153)) ('esophageal cancer', 'Disease', 'MESH:D004938', (184, 201)) ('cancer', 'Disease', 'MESH:D009369', (114, 120)) ('cancer', 'Disease', 'MESH:D009369', (170, 176)) ('parathyroid cancer', 'Disease', 'MESH:D010282', (209, 227)) ('large intestine cancer', 'Phenotype', 'HP:0100834', (131, 153)) ('parathyroid cancer', 'Disease', (209, 227)) ('cancer', 'Disease', 'MESH:D009369', (287, 293)) ('cancer', 'Disease', (221, 227)) ('cancer', 'Disease', 'MESH:D009369', (74, 80)) ('cancer', 'Disease', (195, 201)) ('esophageal cancer', 'Disease', (184, 201)) ('biliary tract cancer', 'Phenotype', 'HP:0100574', (60, 80)) ('cancer', 'Disease', (244, 250)) ('cancer', 'Phenotype', 'HP:0002664', (195, 201)) ('central nervous system cancer', 'Disease', (91, 120)) ('biliary tract cancer', 'Disease', 'MESH:D001661', (60, 80)) ('parathyroid cancer', 'Phenotype', 'HP:0006780', (209, 227)) ('appeared', 'Reg', (48, 56)) ('central nervous system cancer', 'Phenotype', 'HP:0100006', (91, 120)) ('cancer', 'Disease', (147, 153)) ('stomach cancer', 'Disease', (236, 250)) ('central nervous system cancer', 'Disease', 'MESH:D002494', (91, 120)) ('cancer', 'Disease', (114, 120)) 34107 32201516 C>T and G>A mutations were most common in the Siglec-15 coding strand, both of which were observed in eleven cancer types. ('G>A mutations', 'Var', (8, 21)) ('cancer', 'Disease', 'MESH:D009369', (109, 115)) ('C>T', 'Var', (0, 3)) ('cancer', 'Disease', (109, 115)) ('common', 'Reg', (32, 38)) ('cancer', 'Phenotype', 'HP:0002664', (109, 115)) 34108 32201516 A>T and T>A mutations in Siglec-15 were not found in the TCGA cancer samples. ('T>A', 'Var', (8, 11)) ('cancer', 'Phenotype', 'HP:0002664', (62, 68)) ('Siglec-15', 'Gene', (25, 34)) ('cancer', 'Disease', (62, 68)) ('cancer', 'Disease', 'MESH:D009369', (62, 68)) 34109 32201516 Other types of base mutations occurred sporadically in different cancers (Figure 3a). ('base mutations', 'Var', (15, 29)) ('cancer', 'Phenotype', 'HP:0002664', (65, 71)) ('cancers', 'Disease', 'MESH:D009369', (65, 72)) ('cancers', 'Phenotype', 'HP:0002664', (65, 72)) ('occurred', 'Reg', (30, 38)) ('cancers', 'Disease', (65, 72)) 34123 32201516 Several lines of evidence have shown that interactions with sialic acid-binding receptors can influence cancer progression; for example, hypersialylation can induce changes in the physical properties of tumor cells and potentiate the evasion of apoptosis in cancer cells. ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('tumor', 'Disease', (203, 208)) ('hypersialylation', 'Var', (137, 153)) ('influence', 'Reg', (94, 103)) ('cancer', 'Phenotype', 'HP:0002664', (258, 264)) ('cancer', 'Phenotype', 'HP:0002664', (104, 110)) ('potentiate', 'PosReg', (219, 229)) ('sialic acid', 'Chemical', 'MESH:D019158', (60, 71)) ('interactions', 'Interaction', (42, 54)) ('cancer', 'Disease', 'MESH:D009369', (258, 264)) ('cancer', 'Disease', 'MESH:D009369', (104, 110)) ('tumor', 'Disease', 'MESH:D009369', (203, 208)) ('cancer', 'Disease', (258, 264)) ('induce changes', 'Reg', (158, 172)) ('cancer', 'Disease', (104, 110)) ('evasion', 'MPA', (234, 241)) 34131 32201516 Additionally, knockdown of Siglec-15 expression did not cause obvious physical abnormalities but did inhibit tumor growth. ('Siglec-15', 'Gene', (27, 36)) ('inhibit', 'NegReg', (101, 108)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('knockdown', 'Var', (14, 23)) ('tumor', 'Disease', (109, 114)) 34132 32201516 Since no previous studies have focused on Siglec-15 mutations in human cancers, we explored this topic with the help of COSMIC and cBioPortal. ('mutations', 'Var', (52, 61)) ('human', 'Species', '9606', (65, 70)) ('cancers', 'Disease', 'MESH:D009369', (71, 78)) ('cancers', 'Phenotype', 'HP:0002664', (71, 78)) ('Siglec-15', 'Gene', (42, 51)) ('cancers', 'Disease', (71, 78)) ('cancer', 'Phenotype', 'HP:0002664', (71, 77)) 34133 32201516 As shown in Figure 3, the results from TCGA demonstrated that Siglec-15 mutations occurred widely in human cancers. ('mutations', 'Var', (72, 81)) ('cancers', 'Disease', (107, 114)) ('cancers', 'Disease', 'MESH:D009369', (107, 114)) ('cancer', 'Phenotype', 'HP:0002664', (107, 113)) ('Siglec-15', 'Gene', (62, 71)) ('human', 'Species', '9606', (101, 106)) ('occurred', 'Reg', (82, 90)) ('cancers', 'Phenotype', 'HP:0002664', (107, 114)) 34134 32201516 The most common type of Siglec-15 mutation was missense substitution, which could be observed in all tumors with mutations. ('tumors', 'Disease', 'MESH:D009369', (101, 107)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('Siglec-15', 'Gene', (24, 33)) ('missense substitution', 'Var', (47, 68)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('tumors', 'Disease', (101, 107)) 34135 32201516 At the base-pair level, C>T and G>A mutations were the most widely observed in tumors. ('observed', 'Reg', (67, 75)) ('C>T', 'Var', (24, 27)) ('tumors', 'Disease', 'MESH:D009369', (79, 85)) ('tumors', 'Disease', (79, 85)) ('G>A mutations', 'Var', (32, 45)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) 34139 32201516 Alterations in the expression of Siglec-15 may cause a variety of gene changes across different cancers, which could lead to remarkably different results. ('cancers', 'Phenotype', 'HP:0002664', (96, 103)) ('cause', 'Reg', (47, 52)) ('cancer', 'Phenotype', 'HP:0002664', (96, 102)) ('Alterations', 'Var', (0, 11)) ('gene changes', 'MPA', (66, 78)) ('Siglec-15', 'Gene', (33, 42)) ('cancers', 'Disease', 'MESH:D009369', (96, 103)) ('cancers', 'Disease', (96, 103)) 34143 32201516 For cutaneous melanoma patients, high Siglec-15 expression indicates a high risk of tumor aggressiveness and adverse clinical outcomes. ('high', 'Var', (33, 37)) ('tumor aggressiveness', 'Disease', 'MESH:D001523', (84, 104)) ('patients', 'Species', '9606', (23, 31)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('expression', 'MPA', (48, 58)) ('melanoma', 'Phenotype', 'HP:0002861', (14, 22)) ('Siglec-15', 'Protein', (38, 47)) ('tumor aggressiveness', 'Disease', (84, 104)) ('cutaneous melanoma', 'Disease', (4, 22)) ('aggressiveness', 'Phenotype', 'HP:0000718', (90, 104)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (4, 22)) ('cutaneous melanoma', 'Disease', 'MESH:C562393', (4, 22)) 34171 32042879 The patient is a 37-year-old G3P0030 with past medical history significant for hairy cell leukemia, diagnosed at age 32 and treated with one cycle of cladribine, with no evidence of disease since that time. ('cladribine', 'Chemical', 'MESH:D017338', (150, 160)) ('hairy cell leukemia', 'Disease', (79, 98)) ('hairy cell leukemia', 'Disease', 'MESH:D007943', (79, 98)) ('leukemia', 'Phenotype', 'HP:0001909', (90, 98)) ('G3P0030', 'Var', (29, 36)) 34288 30352413 It is noteworthy that postoperative SBP was significantly lower in suspected finding group, with 115 +- 19.0 mmHg in incidental finding group and 107 +- 14.2 mmHg in suspected finding group (P < 0.001), but both of them were within the normal range of SBP. ('lower', 'NegReg', (58, 63)) ('SBP', 'Gene', '8991', (252, 255)) ('SBP', 'Gene', '8991', (36, 39)) ('SBP', 'Gene', (36, 39)) ('suspected', 'Var', (67, 76)) ('SBP', 'Gene', (252, 255)) 34321 30352413 MEN2 is known to associate with a mutation on the RET gene. ('associate with', 'Reg', (17, 31)) ('RET', 'Gene', (50, 53)) ('mutation', 'Var', (34, 42)) ('MEN2', 'Gene', (0, 4)) ('RET', 'Gene', '5979', (50, 53)) 34334 28070496 Utility of the succinate:fumarate ratio for assessing SDH dysfunction in different tumor types Mutations of genes encoding the four subunits of succinate dehydrogenase (SDH) have been associated with pheochromocytoma and paraganglioma (PPGLs), gastrointestinal stromal tumors (GISTs) and renal cell carcinomas (RCCs). ('tumor', 'Disease', 'MESH:D009369', (269, 274)) ('gastrointestinal stromal tumors', 'Disease', (244, 275)) ('tumor', 'Disease', (83, 88)) ('tumors', 'Phenotype', 'HP:0002664', (269, 275)) ('paraganglioma', 'Phenotype', 'HP:0002668', (221, 234)) ('RCCs', 'Phenotype', 'HP:0005584', (311, 315)) ('succinate', 'Chemical', 'MESH:D019802', (144, 153)) ('GISTs', 'Phenotype', 'HP:0100723', (277, 282)) ('SDH', 'Gene', (169, 172)) ('tumor', 'Disease', 'MESH:D009369', (83, 88)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (200, 234)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (288, 309)) ('succinate dehydrogenase', 'Gene', (144, 167)) ('SDH dysfunction', 'Disease', 'MESH:D006331', (54, 69)) ('succinate', 'Chemical', 'MESH:D019802', (15, 24)) ('tumor', 'Phenotype', 'HP:0002664', (269, 274)) ('RCC', 'Disease', (311, 314)) ('tumors', 'Disease', (269, 275)) ('SDH', 'Gene', '6390', (54, 57)) ('renal cell carcinomas', 'Disease', (288, 309)) ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (288, 309)) ('Mutations', 'Var', (95, 104)) ('RCC', 'Disease', 'MESH:C538614', (311, 314)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (200, 216)) ('tumors', 'Disease', 'MESH:D009369', (269, 275)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (244, 275)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (244, 275)) ('paraganglioma', 'Disease', (221, 234)) ('SDH', 'Gene', (54, 57)) ('pheochromocytoma', 'Disease', (200, 216)) ('succinate dehydrogenase', 'Gene', '6390', (144, 167)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (200, 216)) ('paraganglioma', 'Disease', 'MESH:D010235', (221, 234)) ('PPGLs', 'Chemical', '-', (236, 241)) ('carcinomas', 'Phenotype', 'HP:0030731', (299, 309)) ('SDH', 'Gene', '6390', (169, 172)) ('fumarate', 'Chemical', 'MESH:D005650', (25, 33)) ('tumor', 'Disease', (269, 274)) ('associated', 'Reg', (184, 194)) ('SDH dysfunction', 'Disease', (54, 69)) 34337 28070496 Sections of FFPE tumor specimens from 18 PPGL, 10 GIST and 11 RCC patients with known SDHx mutation status for SDH deficiency were collected for mass spectrometric analysis of succinate and fumarate. ('mutation', 'Var', (91, 99)) ('deficiency', 'Var', (115, 125)) ('SDHx', 'Gene', (86, 90)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) ('SDHx', 'Chemical', '-', (86, 90)) ('patients', 'Species', '9606', (66, 74)) 34340 28070496 Analyzing biochemical imbalances preserved in FFPE specimens with mass spectrometry expands the method and sample type repertoire available for characterisation of multiple neoplasias associated with SDH deficiency. ('imbalance', 'Phenotype', 'HP:0002172', (22, 31)) ('neoplasias', 'Disease', 'MESH:D009369', (173, 183)) ('associated', 'Reg', (184, 194)) ('neoplasias', 'Phenotype', 'HP:0002664', (173, 183)) ('SDH', 'Gene', (200, 203)) ('deficiency', 'Var', (204, 214)) ('imbalances', 'Phenotype', 'HP:0002172', (22, 32)) ('neoplasias', 'Disease', (173, 183)) 34342 28070496 Mutations in genes encoding subunits of succinate dehydrogenase (SDH) leading to loss or dysfunction of the mitochondrial enzyme involved in both the Krebs cycle and electron transport chain have been associated with multiple neoplasias. ('loss or dysfunction', 'Disease', (81, 100)) ('Krebs', 'Chemical', '-', (150, 155)) ('multiple neoplasias', 'Disease', (217, 236)) ('neoplasias', 'Phenotype', 'HP:0002664', (226, 236)) ('SDH', 'Gene', (65, 68)) ('Mutations', 'Var', (0, 9)) ('associated', 'Reg', (201, 211)) ('loss or dysfunction', 'Disease', 'MESH:D015431', (81, 100)) 34359 28070496 Interestingly among SDH-sufficient samples, those with highest succinate:fumarate ratios were from specimens with germline VHL mutations. ('mutations', 'Var', (127, 136)) ('VHL', 'Gene', '7428', (123, 126)) ('VHL', 'Gene', (123, 126)) ('succinate:fumarate ratios', 'MPA', (63, 88)) 34364 28070496 PPGL tumor specimens with VHL gene mutations have been associated with variably impaired SDHB protein expression, and although the mechanism for this is unknown several hypotheses have been advanced including pseudohypoxic expression of miR-210 that in turns downregulates SDHD expression. ('downregulates', 'NegReg', (259, 272)) ('expression', 'MPA', (102, 112)) ('expression', 'MPA', (278, 288)) ('VHL gene', 'Gene', (26, 34)) ('impaired', 'NegReg', (80, 88)) ('SDHD', 'Gene', (273, 277)) ('protein', 'Protein', (94, 101)) ('tumor', 'Phenotype', 'HP:0002664', (5, 10)) ('miR-210', 'Gene', (237, 244)) ('miR-210', 'Gene', '406992', (237, 244)) ('SDHB', 'Gene', (89, 93)) ('mutations', 'Var', (35, 44)) 34366 28070496 Elevated succinate:fumarate appears to have at least three potential causes: (a) inactivation by germline mutation in SDHx gene (together with somatic loss of the other allele) herein shown to be true for SDHx-mutated RCCs as well for PPGLs; (b) hypermethylation of the SDHC promoter, as first described in Carney triad and more recently in PPGL by Richter et al., and which is possibly also the mechanism for SDH-deficiency in at least some of our GIST samples; and (c) by germline VHL mutation which is associated with variably impaired SDH function. ('mutation', 'Var', (487, 495)) ('VHL', 'Gene', (483, 486)) ('Carney', 'Disease', (307, 313)) ('SDHC', 'Gene', (270, 274)) ('RCCs', 'Phenotype', 'HP:0005584', (218, 222)) ('Elevated succinate', 'Phenotype', 'HP:0020149', (0, 18)) ('SDHC', 'Gene', '6391', (270, 274)) 34367 28070496 indistinguishable from SDH-sufficient samples) contained SDHB mutation c.380T > G, p.Ile127Ser. ('c.380T > G', 'Var', (71, 81)) ('p.Ile127Ser', 'Var', (83, 94)) ('SDHB', 'Gene', (57, 61)) ('p.Ile127Ser', 'Mutation', 'rs786201095', (83, 94)) ('c.380T > G', 'Mutation', 'rs786201095', (71, 81)) 34374 27992508 Nineteen patients with recurrent PPGLs consisted of ones with malignant PPGLs (n = 17) and multifocal PPGLs (n = 2) who had VHL and RET mutations. ('PPGLs', 'Chemical', '-', (33, 38)) ('patients', 'Species', '9606', (9, 17)) ('VHL', 'Gene', '7428', (124, 127)) ('PPGLs', 'Disease', (72, 77)) ('RET', 'Gene', '5979', (132, 135)) ('PPGLs', 'Chemical', '-', (102, 107)) ('mutations', 'Var', (136, 145)) ('PPGLs', 'Disease', (33, 38)) ('PPGLs', 'Chemical', '-', (72, 77)) ('VHL', 'Gene', (124, 127)) ('RET', 'Gene', (132, 135)) 34380 27992508 PPGL patients with characteristic pathologic findings and PASS >=4 or germline mutations require close follow-up. ('PPGL', 'Gene', (0, 4)) ('patients', 'Species', '9606', (5, 13)) ('germline mutations', 'Var', (70, 88)) 34393 27992508 Recently, germline mutations in the SDHB and SDHD genes have been reported to be independent risk factors for metastasis. ('SDHB', 'Gene', '6390', (36, 40)) ('SDHB', 'Gene', (36, 40)) ('metastasis', 'CPA', (110, 120)) ('SDHD', 'Gene', '6392', (45, 49)) ('germline mutations', 'Var', (10, 28)) ('SDHD', 'Gene', (45, 49)) ('risk factors', 'Reg', (93, 105)) 34399 27992508 Clinical information included i) sex and age at initial diagnosis; ii) clinical symptoms/signs including headache, sweating, palpitation, pain (neck, chest, abdomen, or bone), palpable mass, and hypertension (new onset, paroxysmal, or uncontrolled); iii) secreted hormones (plasma/24 hours urine): epinephrine, norepinephrine, metanephrine, normetanephrine and dopamine; iv) tumor size; v) PASS; vi) genetic mutations; vii) recurrence; and viii) metastasis. ('metastasis', 'CPA', (446, 456)) ('palpitation', 'Phenotype', 'HP:0001962', (125, 136)) ('pain', 'Phenotype', 'HP:0012531', (138, 142)) ('epinephrine', 'Chemical', 'MESH:D004837', (314, 325)) ('hypertension', 'Disease', 'MESH:D006973', (195, 207)) ('metanephrine', 'Chemical', 'MESH:D008676', (327, 339)) ('dopamine', 'Chemical', 'MESH:D004298', (361, 369)) ('hypertension', 'Disease', (195, 207)) ('headache', 'Disease', (105, 113)) ('genetic mutations', 'Var', (400, 417)) ('normetanephrine', 'MPA', (341, 356)) ('pain', 'Disease', 'MESH:D010146', (138, 142)) ('norepinephrine', 'Chemical', 'MESH:D009638', (311, 325)) ('tumor', 'Disease', (375, 380)) ('hypertension', 'Phenotype', 'HP:0000822', (195, 207)) ('tumor', 'Disease', 'MESH:D009369', (375, 380)) ('headache', 'Disease', 'MESH:D006261', (105, 113)) ('norepinephrine', 'MPA', (311, 325)) ('normetanephrine', 'Chemical', 'MESH:D009647', (341, 356)) ('sweating', 'Phenotype', 'HP:0000975', (115, 123)) ('tumor', 'Phenotype', 'HP:0002664', (375, 380)) ('PASS', 'MPA', (390, 394)) ('pain', 'Disease', (138, 142)) ('metanephrine', 'Chemical', 'MESH:D008676', (344, 356)) ('epinephrine', 'Chemical', 'MESH:D004837', (298, 309)) ('metanephrine', 'MPA', (327, 339)) ('epinephrine', 'MPA', (298, 309)) ('headache', 'Phenotype', 'HP:0002315', (105, 113)) 34403 27992508 Tumors with a PASS >4 reportedly exhibit more malignant tendencies. ('PASS >4', 'Var', (14, 21)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('malignant tendencies', 'CPA', (46, 66)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) 34431 27992508 Median PASS values for malignant PPGLs were significantly higher than those for benign tumors (8 vs. 3 points respectively; p<0.001). ('PPGLs', 'Chemical', '-', (33, 38)) ('tumor', 'Phenotype', 'HP:0002664', (87, 92)) ('benign tumors', 'Disease', (80, 93)) ('tumors', 'Phenotype', 'HP:0002664', (87, 93)) ('malignant', 'Var', (23, 32)) ('higher', 'PosReg', (58, 64)) ('PASS', 'MPA', (7, 11)) ('benign tumors', 'Disease', 'MESH:D009369', (80, 93)) 34432 27992508 All patients with malignant PPGLs showed PASS >=4, while 42 (38.5%) of benign PPGL patients also presented with PASS >=4. ('PPGLs', 'Disease', (28, 33)) ('PPGLs', 'Chemical', '-', (28, 33)) ('patients', 'Species', '9606', (4, 12)) ('patients', 'Species', '9606', (83, 91)) ('PASS', 'Var', (41, 45)) 34438 27992508 PASS data were available for 116 patients with initially benign PPGLs; in these patients, necrosis, capsular invasion, vascular invasion, high mitosis, atypical mitotic figures, and nuclear hyperchromasia were predictive factors for malignancy. ('atypical', 'Var', (152, 160)) ('capsular invasion', 'CPA', (100, 117)) ('malignancy', 'Disease', 'MESH:D009369', (233, 243)) ('patients', 'Species', '9606', (80, 88)) ('patients', 'Species', '9606', (33, 41)) ('malignancy', 'Disease', (233, 243)) ('necrosis', 'Disease', (90, 98)) ('hyperchromasia', 'Disease', 'None', (190, 204)) ('high mitosis', 'Disease', 'MESH:D008228', (138, 150)) ('PPGLs', 'Chemical', '-', (64, 69)) ('necrosis', 'Disease', 'MESH:D009336', (90, 98)) ('vascular invasion', 'CPA', (119, 136)) ('high mitosis', 'Disease', (138, 150)) ('hyperchromasia', 'Disease', (190, 204)) 34440 27992508 Two of these patients, both of whom had VHL and RET mutations, experienced recurrence at the adrenal gland; this was not a criterion for malignancy. ('mutations', 'Var', (52, 61)) ('experienced', 'Reg', (63, 74)) ('malignancy', 'Disease', (137, 147)) ('VHL', 'Gene', (40, 43)) ('RET', 'Gene', '5979', (48, 51)) ('patients', 'Species', '9606', (13, 21)) ('VHL', 'Gene', '7428', (40, 43)) ('RET', 'Gene', (48, 51)) ('malignancy', 'Disease', 'MESH:D009369', (137, 147)) 34447 27992508 SDHB mutation did not predict malignancy, whereas 12 variables of PASS, necrosis, capsular invasion, vascular invasion, cellular monotony, high mitosis, atypical mitotic figures, and nuclear hyperchromasia were predictive of malignancy in PPGLs that did not present with metastases at diagnosis. ('PPGLs', 'Chemical', '-', (239, 244)) ('malignancy', 'Disease', (30, 40)) ('hyperchromasia', 'Disease', (191, 205)) ('metastases', 'Disease', 'MESH:D009362', (271, 281)) ('predictive of', 'Reg', (211, 224)) ('high mitosis', 'Disease', (139, 151)) ('necrosis', 'Disease', (72, 80)) ('mutation', 'Var', (5, 13)) ('high mitosis', 'Disease', 'MESH:D008228', (139, 151)) ('PPGLs', 'Disease', (239, 244)) ('hyperchromasia', 'Disease', 'None', (191, 205)) ('SDHB', 'Gene', (0, 4)) ('malignancy', 'Disease', 'MESH:D009369', (30, 40)) ('malignancy', 'Disease', 'MESH:D009369', (225, 235)) ('SDHB', 'Gene', '6390', (0, 4)) ('necrosis', 'Disease', 'MESH:D009336', (72, 80)) ('malignancy', 'Disease', (225, 235)) ('metastases', 'Disease', (271, 281)) 34452 27992508 Two patients had recurrence in their adrenal glands, which was not a criterion for malignancy; these patients also had germline mutations. ('patients', 'Species', '9606', (101, 109)) ('malignancy', 'Disease', 'MESH:D009369', (83, 93)) ('germline mutations', 'Var', (119, 137)) ('malignancy', 'Disease', (83, 93)) ('patients', 'Species', '9606', (4, 12)) 34454 27992508 As recommended by European Society of Endocrinology guideline, only high-risk patients such as those who are young and those with germline mutations and large tumors should be followed for more than 10 years. ('germline mutations', 'Var', (130, 148)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('patients', 'Species', '9606', (78, 86)) ('tumors', 'Phenotype', 'HP:0002664', (159, 165)) ('tumors', 'Disease', (159, 165)) ('tumors', 'Disease', 'MESH:D009369', (159, 165)) 34470 27992508 found that tumors with a PASS >4 exhibited increased metastatic potential. ('PASS >4', 'Var', (25, 32)) ('tumor', 'Phenotype', 'HP:0002664', (11, 16)) ('tumors', 'Phenotype', 'HP:0002664', (11, 17)) ('tumors', 'Disease', 'MESH:D009369', (11, 17)) ('tumors', 'Disease', (11, 17)) ('metastatic potential', 'CPA', (53, 73)) ('increased', 'PosReg', (43, 52)) 34475 27992508 Furthermore, high mitotic figures, atypical mitotic figures, and nuclear hyperchromasia were additional predictors of malignancy, as shown in other studies. ('high mitotic figures', 'CPA', (13, 33)) ('hyperchromasia', 'Disease', 'None', (73, 87)) ('malignancy', 'Disease', 'MESH:D009369', (118, 128)) ('atypical', 'Var', (35, 43)) ('malignancy', 'Disease', (118, 128)) ('hyperchromasia', 'Disease', (73, 87)) 34480 27992508 Nineteen patients with recurrent PPGLs included those with malignant PPGLs (n = 17) and multifocal PPGLs (n = 2) who had VHL and RET mutations. ('PPGLs', 'Chemical', '-', (33, 38)) ('patients', 'Species', '9606', (9, 17)) ('VHL', 'Gene', '7428', (121, 124)) ('RET', 'Gene', (129, 132)) ('PPGLs', 'Disease', (69, 74)) ('PPGLs', 'Chemical', '-', (99, 104)) ('PPGLs', 'Chemical', '-', (69, 74)) ('PPGLs', 'Disease', (33, 38)) ('mutations', 'Var', (133, 142)) ('RET', 'Gene', '5979', (129, 132)) ('VHL', 'Gene', (121, 124)) 34481 27992508 The presence of an SDHB mutation is associated with an increased risk of metastasis, and up to 40% of patients with an SDHB mutation will develop distant metastasis. ('SDHB', 'Gene', '6390', (19, 23)) ('metastasis', 'CPA', (73, 83)) ('distant metastasis', 'CPA', (146, 164)) ('patients', 'Species', '9606', (102, 110)) ('SDHB', 'Gene', '6390', (119, 123)) ('develop', 'PosReg', (138, 145)) ('SDHB', 'Gene', (19, 23)) ('SDHB', 'Gene', (119, 123)) ('mutation', 'Var', (124, 132)) ('mutation', 'Var', (24, 32)) 34482 27992508 Because of the lack of genetic testing in malignant PPGLs, we did not investigate the proportion of SDHB mutations in malignant PPGLs. ('PPGLs', 'Chemical', '-', (128, 133)) ('SDHB', 'Gene', '6390', (100, 104)) ('mutations', 'Var', (105, 114)) ('PPGLs', 'Chemical', '-', (52, 57)) ('SDHB', 'Gene', (100, 104)) 34485 27992508 The follow-up duration was relatively shorter in patients with non-metastatic PPGLs (n = 17) than those with metastatic ones (n = 194) (34.0 [18.1-69.0] vs. 85.3 [49.6-100.2], p value = 0.009). ('PPGLs', 'Chemical', '-', (78, 83)) ('shorter', 'NegReg', (38, 45)) ('PPGLs', 'Disease', (78, 83)) ('patients', 'Species', '9606', (49, 57)) ('non-metastatic', 'Var', (63, 77)) 34489 27992508 PPGLs with PASS <4 have a benign clinical course without recurrence or malignancy regardless of tumor size. ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('PASS <4', 'Var', (11, 18)) ('malignancy regardless of tumor', 'Disease', 'MESH:D018198', (71, 101)) ('malignancy regardless of tumor', 'Disease', (71, 101)) ('PPGLs', 'Chemical', '-', (0, 5)) 34557 23083876 Succinate Dehydrogenase Kidney Cancer (SDH-RCC): An Aggressive Example of the Warburg Effect in Cancer Recently, a new renal cell cancer (RCC) syndrome has been linked to germline mutation of multiple subunits (SDHB/C/D) of the Krebs cycle enzyme, succinate dehydrogenase. ('SDH-RCC', 'Disease', (39, 46)) ('Cancer', 'Disease', 'MESH:D009369', (31, 37)) ('renal cell cancer (RCC) syndrome', 'Disease', 'MESH:C538614', (119, 151)) ('RCC', 'Phenotype', 'HP:0005584', (138, 141)) ('Succinate Dehydrogenase', 'Gene', (0, 23)) ('linked', 'Reg', (161, 167)) ('SDHB', 'Gene', '6390', (211, 215)) ('Kidney Cancer', 'Disease', (24, 37)) ('Succinate Dehydrogenase', 'Gene', '6390', (0, 23)) ('RCC', 'Phenotype', 'HP:0005584', (43, 46)) ('Cancer', 'Phenotype', 'HP:0002664', (96, 102)) ('succinate dehydrogenase', 'Gene', (248, 271)) ('Kidney Cancer', 'Phenotype', 'HP:0009726', (24, 37)) ('SDHB', 'Gene', (211, 215)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (119, 136)) ('SDH-RCC', 'Disease', 'MESH:C538614', (39, 46)) ('germline mutation', 'Var', (171, 188)) ('Cancer', 'Phenotype', 'HP:0002664', (31, 37)) ('Cancer', 'Disease', (96, 102)) ('Kidney Cancer', 'Disease', 'MESH:D007680', (24, 37)) ('succinate dehydrogenase', 'Gene', '6390', (248, 271)) ('Cancer', 'Disease', (31, 37)) ('cancer', 'Phenotype', 'HP:0002664', (130, 136)) ('Cancer', 'Disease', 'MESH:D009369', (96, 102)) ('Krebs', 'Chemical', '-', (228, 233)) 34560 23083876 Individuals from families with germline SDHB, SDHC and SDHD mutations and kidney cancer underwent comprehensive clinical and genetic evaluation. ('SDHB', 'Gene', '6390', (40, 44)) ('cancer', 'Phenotype', 'HP:0002664', (81, 87)) ('SDHB', 'Gene', (40, 44)) ('SDHC', 'Gene', (46, 50)) ('kidney cancer', 'Phenotype', 'HP:0009726', (74, 87)) ('kidney cancer', 'Disease', 'MESH:D007680', (74, 87)) ('SDHD', 'Gene', '6392', (55, 59)) ('mutations', 'Var', (60, 69)) ('kidney cancer', 'Disease', (74, 87)) ('SDHD', 'Gene', (55, 59)) ('SDHC', 'Gene', '6391', (46, 50)) 34561 23083876 Fourteen patients from twelve SDHB mutation families were evaluated. ('patients', 'Species', '9606', (9, 17)) ('SDHB', 'Gene', '6390', (30, 34)) ('SDHB', 'Gene', (30, 34)) ('mutation', 'Var', (35, 43)) 34563 23083876 An additional family with six individuals found to have clear cell RCC that presented at a young average age, 47 yrs (range 40-53yrs), was identified with a germline SDHC mutation (R133X), two of which developed metastatic disease. ('developed', 'PosReg', (202, 211)) ('R133X', 'Var', (181, 186)) ('RCC', 'Phenotype', 'HP:0005584', (67, 70)) ('R133X', 'Mutation', 'rs764575966', (181, 186)) ('RCC', 'Disease', 'MESH:C538614', (67, 70)) ('RCC', 'Disease', (67, 70)) ('metastatic disease', 'CPA', (212, 230)) ('SDHC', 'Gene', (166, 170)) ('SDHC', 'Gene', '6391', (166, 170)) 34564 23083876 A patient with a history of carotid body paragangliomas and a very aggressive form of kidney cancer was evaluated from a family with germline SDHD mutation. ('paraganglioma', 'Phenotype', 'HP:0002668', (41, 54)) ('mutation', 'Var', (147, 155)) ('kidney cancer', 'Disease', 'MESH:D007680', (86, 99)) ('carotid body paragangliomas', 'Disease', (28, 55)) ('carotid body paragangliomas', 'Disease', 'MESH:D002345', (28, 55)) ('cancer', 'Phenotype', 'HP:0002664', (93, 99)) ('kidney cancer', 'Phenotype', 'HP:0009726', (86, 99)) ('paragangliomas', 'Phenotype', 'HP:0002668', (41, 55)) ('carotid body paragangliomas', 'Phenotype', 'HP:0100635', (28, 55)) ('kidney cancer', 'Disease', (86, 99)) ('patient', 'Species', '9606', (2, 9)) ('SDHD', 'Gene', '6392', (142, 146)) ('SDHD', 'Gene', (142, 146)) 34569 23083876 Germline mutation of the Krebs cycle (tricarboxylic acid cycle) enzyme, fumarate hydratase, is associated with an aggressive form of type II papillary kidney cancer in patients affected with Hereditary Leiomyomatosis and Renal Cell Carcinoma (HLRCC). ('type II papillary kidney cancer', 'Disease', 'MESH:D007681', (133, 164)) ('RCC', 'Disease', 'MESH:C538614', (245, 248)) ('fumarate hydratase', 'Gene', '2271', (72, 90)) ('type II papillary kidney cancer', 'Phenotype', 'HP:0006732', (133, 164)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (38, 56)) ('associated with', 'Reg', (95, 110)) ('type II papillary kidney cancer', 'Disease', (133, 164)) ('cancer', 'Phenotype', 'HP:0002664', (158, 164)) ('Hereditary Leiomyomatosis and Renal Cell Carcinoma', 'Disease', 'MESH:C535516', (191, 241)) ('Krebs', 'Chemical', '-', (25, 30)) ('papillary kidney cancer', 'Phenotype', 'HP:0006766', (141, 164)) ('Renal Cell Carcinoma', 'Phenotype', 'HP:0005584', (221, 241)) ('fumarate hydratase', 'Gene', (72, 90)) ('Germline mutation', 'Var', (0, 17)) ('Carcinoma', 'Phenotype', 'HP:0030731', (232, 241)) ('kidney cancer', 'Phenotype', 'HP:0009726', (151, 164)) ('RCC', 'Disease', (245, 248)) ('RCC', 'Phenotype', 'HP:0005584', (245, 248)) ('patients', 'Species', '9606', (168, 176)) 34572 23083876 A second form of inherited kidney cancer characterized by a Krebs cycle gene mutation was initially reported by Vanharanta, et al., who described three patients with kidney cancer in families with a germline mutation of succinate dehydrogenase B (SDHB) also associated with hereditary paraganglioma (PGL), a group of diseases associated with head and neck PGL that can include a history of pheochromocytoma (PCC). ('cancer', 'Phenotype', 'HP:0002664', (34, 40)) ('inherited kidney cancer', 'Disease', 'MESH:D007680', (17, 40)) ('mutation', 'Var', (77, 85)) ('kidney cancer', 'Disease', 'MESH:D007680', (27, 40)) ('associated with', 'Reg', (258, 273)) ('hereditary paraganglioma', 'Disease', 'MESH:D010235', (274, 298)) ('Krebs', 'Chemical', '-', (60, 65)) ('kidney cancer', 'Phenotype', 'HP:0009726', (27, 40)) ('succinate dehydrogenase B', 'Gene', (220, 245)) ('PGL', 'Phenotype', 'HP:0002668', (356, 359)) ('kidney cancer', 'Disease', 'MESH:D007680', (166, 179)) ('paraganglioma', 'Phenotype', 'HP:0002668', (285, 298)) ('PGL', 'Phenotype', 'HP:0002668', (300, 303)) ('hereditary paraganglioma', 'Disease', (274, 298)) ('mutation', 'Var', (208, 216)) ('SDHB', 'Gene', '6390', (247, 251)) ('succinate dehydrogenase B', 'Gene', '6390', (220, 245)) ('kidney cancer', 'Phenotype', 'HP:0009726', (166, 179)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (390, 406)) ('cancer', 'Phenotype', 'HP:0002664', (173, 179)) ('kidney cancer', 'Disease', (166, 179)) ('patients', 'Species', '9606', (152, 160)) ('pheochromocytoma', 'Disease', (390, 406)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (390, 406)) ('PCC', 'Phenotype', 'HP:0002666', (408, 411)) ('SDHB', 'Gene', (247, 251)) ('inherited kidney cancer', 'Disease', (17, 40)) 34576 23083876 Multiple reports identified the presence of RCC in patients with SDHB mutations either with or without a personal or family history of PGL and/or PCC. ('mutations', 'Var', (70, 79)) ('PCC', 'Phenotype', 'HP:0002666', (146, 149)) ('RCC', 'Disease', 'MESH:C538614', (44, 47)) ('RCC', 'Disease', (44, 47)) ('RCC', 'Phenotype', 'HP:0005584', (44, 47)) ('SDHB', 'Gene', '6390', (65, 69)) ('presence', 'Reg', (32, 40)) ('patients', 'Species', '9606', (51, 59)) ('PGL', 'Phenotype', 'HP:0002668', (135, 138)) ('SDHB', 'Gene', (65, 69)) 34577 23083876 Furthermore, a recent investigation describing 2 individuals with Cowden or Cowden-like syndromic features including RCC, but no PTEN mutation, reported SDHD gene variants that affected the AKT and/or MAPK pathways. ('RCC', 'Disease', 'MESH:C538614', (117, 120)) ('affected', 'Reg', (177, 185)) ('RCC', 'Disease', (117, 120)) ('RCC', 'Phenotype', 'HP:0005584', (117, 120)) ('SDHD', 'Gene', (153, 157)) ('SDHD', 'Gene', '6392', (153, 157)) ('AKT', 'Gene', '207', (190, 193)) ('PTEN', 'Gene', (129, 133)) ('PTEN', 'Gene', '5728', (129, 133)) ('variants', 'Var', (163, 171)) ('MAPK pathways', 'Pathway', (201, 214)) ('AKT', 'Gene', (190, 193)) 34578 23083876 reported an individual patient with a germline SDHC gene mutation with personal and family history of PGL who was found to have RCC tumors with loss of the wild-type SDHC allele. ('mutation', 'Var', (57, 65)) ('RCC tumors', 'Disease', (128, 138)) ('RCC', 'Phenotype', 'HP:0005584', (128, 131)) ('SDHC', 'Gene', '6391', (47, 51)) ('PGL', 'Phenotype', 'HP:0002668', (102, 105)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('tumors', 'Phenotype', 'HP:0002664', (132, 138)) ('SDHC', 'Gene', (166, 170)) ('RCC tumors', 'Disease', 'MESH:C538614', (128, 138)) ('SDHC', 'Gene', '6391', (166, 170)) ('SDHC', 'Gene', (47, 51)) ('patient', 'Species', '9606', (23, 30)) 34585 23083876 DNA was extracted from whole blood and mutation analyses were performed by direct sequencing on all coding exons of the SDHB (NM_003000.2), SDHC (NM_003001.3) and SDHD (NM_003002.2) genes. ('SDHD', 'Gene', (163, 167)) ('NM_003001.3', 'Var', (146, 157)) ('SDHC', 'Gene', (140, 144)) ('SDHD', 'Gene', '6392', (163, 167)) ('SDHC', 'Gene', '6391', (140, 144)) ('SDHB', 'Gene', '6390', (120, 124)) ('NM_003000.2', 'Var', (126, 137)) ('SDHB', 'Gene', (120, 124)) 34587 23083876 Members of affected kindreds with SDHB, SDHC or SDHD mutations that had clinical manifestations such as RCC or pheochromocytoma/paraganglioma were offered evaluation. ('RCC', 'Phenotype', 'HP:0005584', (104, 107)) ('RCC', 'Disease', (104, 107)) ('pheochromocytoma', 'Disease', (111, 127)) ('RCC', 'Disease', 'MESH:C538614', (104, 107)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (111, 127)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (111, 127)) ('paraganglioma', 'Disease', 'MESH:D010235', (128, 141)) ('SDHD', 'Gene', '6392', (48, 52)) ('mutations', 'Var', (53, 62)) ('SDHB', 'Gene', '6390', (34, 38)) ('SDHB', 'Gene', (34, 38)) ('SDHC', 'Gene', (40, 44)) ('SDHD', 'Gene', (48, 52)) ('paraganglioma', 'Phenotype', 'HP:0002668', (128, 141)) ('SDHC', 'Gene', '6391', (40, 44)) ('paraganglioma', 'Disease', (128, 141)) 34589 23083876 Patient information was evaluated in addition to individual and familial manifestations of SDH mutation. ('SDH', 'Gene', (91, 94)) ('SDH', 'Gene', '6390', (91, 94)) ('Patient', 'Species', '9606', (0, 7)) ('mutation', 'Var', (95, 103)) 34592 23083876 Fourteen patients from 12 families with germline SDHB mutations were evaluated. ('SDHB', 'Gene', (49, 53)) ('patients', 'Species', '9606', (9, 17)) ('mutations', 'Var', (54, 63)) ('SDHB', 'Gene', '6390', (49, 53)) 34598 23083876 Preoperative imaging was available for ten SDHB mutation patients. ('patients', 'Species', '9606', (57, 65)) ('mutation', 'Var', (48, 56)) ('SDHB', 'Gene', '6390', (43, 47)) ('SDHB', 'Gene', (43, 47)) 34606 23083876 Four SDHB mutation patients were found to have metastatic disease, three (UOB-1 III:1 and III:3, UOB-4 III:2) at the time of initial presentation and one patient (UOB-10 III:1) with T1a disease that recurred in the liver three years post-operatively (Figure 3E and 3F). ('metastatic disease', 'Disease', (47, 65)) ('patient', 'Species', '9606', (19, 26)) ('SDHB', 'Gene', '6390', (5, 9)) ('patient', 'Species', '9606', (154, 161)) ('patients', 'Species', '9606', (19, 27)) ('SDHB', 'Gene', (5, 9)) ('mutation', 'Var', (10, 18)) 34607 23083876 The pathologic tumor stage for available cases was T1/T2 (Figure 3A and 3B) in 12/13 cases (92.3%) and T3a in the remaining case (UOB-4 III:2, Figure 3C). ('T3a', 'Var', (103, 106)) ('tumor', 'Disease', 'MESH:D009369', (15, 20)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('T1/T2', 'Disease', (51, 56)) ('tumor', 'Disease', (15, 20)) 34609 23083876 All the SDHB mutations, except SDHB p.Ile127Leu, have been previously shown to be associated with PGL and/or PCC, and thus were considered pathogenic (LOVD v2.0 TCA Cycle Gene Mutation Database). ('associated', 'Reg', (82, 92)) ('SDHB', 'Gene', (31, 35)) ('pathogenic', 'Reg', (139, 149)) ('SDHB', 'Gene', '6390', (8, 12)) ('p.Ile127Leu', 'Mutation', 'rs201372280', (36, 47)) ('PGL', 'Phenotype', 'HP:0002668', (98, 101)) ('PCC', 'Disease', (109, 112)) ('SDHB', 'Gene', (8, 12)) ('PGL', 'Disease', (98, 101)) ('PCC', 'Phenotype', 'HP:0002666', (109, 112)) ('mutations', 'Var', (13, 22)) ('SDHB', 'Gene', '6390', (31, 35)) 34610 23083876 The novel p.Ile127Leu alters an amino acid that has alternative variants (p.Ile127Asn, p.Ile127Ser) that have been shown to be associated with PGL and/or PCC, and was thus considered pathogenic. ('p.Ile127Leu', 'Var', (10, 21)) ('associated', 'Reg', (127, 137)) ('PGL', 'Phenotype', 'HP:0002668', (143, 146)) ('p.Ile127Asn', 'Mutation', 'p.I127N', (74, 85)) ('PCC', 'Disease', (154, 157)) ('PGL', 'Disease', (143, 146)) ('PCC', 'Phenotype', 'HP:0002666', (154, 157)) ('p.Ile127Ser', 'Var', (87, 98)) ('p.Ile127Ser', 'Mutation', 'rs786201095', (87, 98)) ('p.Ile127Asn', 'Var', (74, 85)) ('p.Ile127Leu', 'Mutation', 'rs201372280', (10, 21)) 34611 23083876 Alterations were observed throughout the length of the SDHB gene consisting of 1 nonsense (c.268C>T p.Arg90X), 4 missense (c.137G>A p.Arg46Gln, c.286G>A, p.Gly96Ser, c.379A>C p.Ile127Leu, c.689G>A p.Arg230His), 2 splice site altering mutations (c.286+2T>A, c.541-2A>G) and three complete deletions of exon 1. ('c.689G>A', 'Mutation', 'rs587782604', (188, 196)) ('c.268C>T', 'Mutation', 'rs74315366', (91, 99)) ('c.541-2A>G', 'Var', (257, 267)) ('c.268C>T p.Arg90X', 'Var', (91, 108)) ('p.Ile127Leu', 'Mutation', 'rs201372280', (175, 186)) ('c.286+2T>A', 'Mutation', 'rs587781270', (245, 255)) ('c.286G>A', 'Mutation', 'rs587782243', (144, 152)) ('SDHB', 'Gene', (55, 59)) ('p.Gly96Ser', 'Mutation', 'rs587782243', (154, 164)) ('p.Arg90X', 'Mutation', 'rs74315366', (100, 108)) ('c.137G>A', 'Mutation', 'rs772551056', (123, 131)) ('c.286G>A', 'Var', (144, 152)) ('c.689G>A p.Arg230His', 'Var', (188, 208)) ('c.286+2T>A', 'Var', (245, 255)) ('c.541-2A>G', 'Mutation', 'rs786201161', (257, 267)) ('p.Arg230His', 'Mutation', 'rs587782604', (197, 208)) ('c.379A>C', 'Mutation', 'rs201372280', (166, 174)) ('c.137G>A p.Arg46Gln', 'Var', (123, 142)) ('SDHB', 'Gene', '6390', (55, 59)) ('c.379A>C', 'Var', (166, 174)) ('p.Gly96Ser', 'Var', (154, 164)) ('p.Arg46Gln', 'Mutation', 'rs772551056', (132, 142)) 34612 23083876 Mutations occurred along the length of the SDHB protein including all three critical regulatory sites (Figure 4A and 4B). ('SDHB', 'Gene', '6390', (43, 47)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (43, 47)) ('occurred', 'Reg', (10, 18)) 34614 23083876 While no germline mutations were detected in known familial RCC genes such as VHL, FLCN, FH, SDHB and SDHD, mutation analysis of SDHC revealed a c.397C>T germline mutation in the proband, her affected cousin and two of her offspring. ('VHL', 'Disease', 'MESH:D006623', (78, 81)) ('SDHC', 'Gene', '6391', (129, 133)) ('c.397C>T', 'Mutation', 'rs764575966', (145, 153)) ('SDHB', 'Gene', (93, 97)) ('VHL', 'Disease', (78, 81)) ('FLCN', 'Gene', (83, 87)) ('RCC', 'Disease', (60, 63)) ('RCC', 'Phenotype', 'HP:0005584', (60, 63)) ('c.397C>T', 'Var', (145, 153)) ('SDHD', 'Gene', (102, 106)) ('RCC', 'Disease', 'MESH:C538614', (60, 63)) ('FLCN', 'Gene', '201163', (83, 87)) ('SDHD', 'Gene', '6392', (102, 106)) ('SDHC', 'Gene', (129, 133)) ('SDHB', 'Gene', '6390', (93, 97)) 34622 23083876 Strikingly, all seven renal tumors from this family (UOB-13) with germline SDHC mutation were found to be classic clear cell RCC (Figure 6B and 6H). ('SDHC', 'Gene', (75, 79)) ('RCC', 'Disease', 'MESH:C538614', (125, 128)) ('SDHC', 'Gene', '6391', (75, 79)) ('RCC', 'Disease', (125, 128)) ('renal tumors', 'Disease', 'MESH:D007674', (22, 34)) ('RCC', 'Phenotype', 'HP:0005584', (125, 128)) ('tumors', 'Phenotype', 'HP:0002664', (28, 34)) ('renal tumors', 'Disease', (22, 34)) ('renal tumor', 'Phenotype', 'HP:0009726', (22, 33)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) ('mutation', 'Var', (80, 88)) ('renal tumors', 'Phenotype', 'HP:0009726', (22, 34)) 34625 23083876 The germline heterozygous SDHC nonsense mutation (c.397C>T p.Arg133X) identified in UOB-13 was previously associated with PGL/PCC. ('UOB-13', 'Gene', (84, 90)) ('c.397C>T p.Arg133X', 'Var', (50, 68)) ('SDHC', 'Gene', '6391', (26, 30)) ('c.397C>T', 'Mutation', 'rs764575966', (50, 58)) ('associated', 'Reg', (106, 116)) ('PGL', 'Phenotype', 'HP:0002668', (122, 125)) ('p.Arg133X', 'Mutation', 'rs764575966', (59, 68)) ('PGL/PCC', 'Disease', (122, 129)) ('PCC', 'Phenotype', 'HP:0002666', (126, 129)) ('p.Arg133X', 'Var', (59, 68)) ('SDHC', 'Gene', (26, 30)) 34626 23083876 This mutation would be predicted to result in the loss of full-length protein production, which is also the case of the single SDHC mutation previously associated with RCC, pMet1Ile. ('SDHC', 'Gene', (127, 131)) ('full-length protein production', 'MPA', (58, 88)) ('SDHC', 'Gene', '6391', (127, 131)) ('loss', 'NegReg', (50, 54)) ('RCC', 'Phenotype', 'HP:0005584', (168, 171)) ('RCC', 'Disease', 'MESH:C538614', (168, 171)) ('associated', 'Reg', (152, 162)) ('RCC', 'Disease', (168, 171)) ('mutation', 'Var', (132, 140)) ('mutation', 'Var', (5, 13)) 34632 23083876 Both he and his son were found to have an SDHD mutation (c.239G>T p.Leu80Arg) that has been previously shown to associate with PGL/PCC. ('PGL', 'Phenotype', 'HP:0002668', (127, 130)) ('c.239G>T', 'Mutation', 'c.239G>T', (57, 65)) ('PCC', 'Phenotype', 'HP:0002666', (131, 134)) ('p.Leu80Arg', 'Mutation', 'p.L80R', (66, 76)) ('PGL/PCC', 'Disease', (127, 134)) ('associate', 'Reg', (112, 121)) ('SDHD', 'Gene', (42, 46)) ('c.239G>T p.Leu80Arg', 'Var', (57, 76)) ('SDHD', 'Gene', '6392', (42, 46)) 34635 23083876 When considering germline SDH testing, a personal or family history of PGL, PCC, or a GIST should raise awareness of possible SDHB, SDHC or SDHD alterations, however RCC can present as the sole finding in these families. ('RCC', 'Disease', 'MESH:C538614', (166, 169)) ('PCC', 'Phenotype', 'HP:0002666', (76, 79)) ('SDH', 'Gene', (140, 143)) ('SDHC', 'Gene', (132, 136)) ('SDHB', 'Gene', '6390', (126, 130)) ('SDH', 'Gene', (26, 29)) ('alterations', 'Var', (145, 156)) ('SDHB', 'Gene', (126, 130)) ('SDH', 'Gene', '6390', (126, 129)) ('SDH', 'Gene', '6390', (132, 135)) ('SDHD', 'Gene', '6392', (140, 144)) ('SDHC', 'Gene', '6391', (132, 136)) ('SDH', 'Gene', '6390', (140, 143)) ('RCC', 'Disease', (166, 169)) ('RCC', 'Phenotype', 'HP:0005584', (166, 169)) ('SDH', 'Gene', (126, 129)) ('SDHD', 'Gene', (140, 144)) ('SDH', 'Gene', '6390', (26, 29)) ('SDH', 'Gene', (132, 135)) ('PGL', 'Phenotype', 'HP:0002668', (71, 74)) 34636 23083876 Early age of onset of RCC has been previously observed in patients with SDHB mutations. ('RCC', 'Disease', (22, 25)) ('SDHB', 'Gene', (72, 76)) ('RCC', 'Phenotype', 'HP:0005584', (22, 25)) ('RCC', 'Disease', 'MESH:C538614', (22, 25)) ('mutations', 'Var', (77, 86)) ('patients', 'Species', '9606', (58, 66)) ('SDHB', 'Gene', '6390', (72, 76)) 34658 23083876 Germline mutations in SDHB, SDHC and SDHD are not only associated with hereditary paraganglioma syndromes but also with hereditary kidney cancer. ('Germline mutations', 'Var', (0, 18)) ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('hereditary paraganglioma syndromes', 'Disease', (71, 105)) ('SDHD', 'Gene', '6392', (37, 41)) ('SDHC', 'Gene', (28, 32)) ('associated', 'Reg', (55, 65)) ('SDHB', 'Gene', '6390', (22, 26)) ('SDHD', 'Gene', (37, 41)) ('SDHB', 'Gene', (22, 26)) ('hereditary kidney cancer', 'Disease', 'MESH:D007680', (120, 144)) ('cancer', 'Phenotype', 'HP:0002664', (138, 144)) ('hereditary kidney cancer', 'Disease', (120, 144)) ('kidney cancer', 'Phenotype', 'HP:0009726', (131, 144)) ('SDHC', 'Gene', '6391', (28, 32)) ('hereditary paraganglioma syndromes', 'Disease', 'MESH:D010235', (71, 105)) 34659 23083876 We have characterized the clinical manifestations and management of SDHB-, SDHC- and SDHD mutation-associated RCC. ('RCC', 'Disease', (110, 113)) ('RCC', 'Phenotype', 'HP:0005584', (110, 113)) ('SDHC', 'Gene', (75, 79)) ('mutation-associated', 'Var', (90, 109)) ('RCC', 'Disease', 'MESH:C538614', (110, 113)) ('SDHC', 'Gene', '6391', (75, 79)) ('SDHB', 'Gene', '6390', (68, 72)) ('SDHD', 'Gene', '6392', (85, 89)) ('SDHB', 'Gene', (68, 72)) ('SDHD', 'Gene', (85, 89)) 34675 23776912 Biological hyperthyroidism was evident with TSHus < 0.05 muUI/ml (normal range: 0.25 to 5), T3 = 24.37 pmol/l (normal range: 4 to 8.3), and T4 > 70 pmol/l (normal range: 9 to 20). ('T3 = 24.37', 'Var', (92, 102)) ('TSHus < 0.05 muUI/ml', 'Var', (44, 64)) ('hyperthyroidism', 'Disease', (11, 26)) ('T4 > 70 pmol/l', 'Var', (140, 154)) ('hyperthyroidism', 'Disease', 'MESH:D006980', (11, 26)) ('hyperthyroidism', 'Phenotype', 'HP:0000836', (11, 26)) 34724 21584168 Germ line mutations in the succinate dehydrogenase (SDH) subunit genes sdh b, sdh c, sdh d, and sdh af2 predispose carriers to tumors of the paraganglia. ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('sdh', 'Gene', (85, 88)) ('sdh', 'Gene', '6390', (71, 74)) ('sdh', 'Gene', (78, 81)) ('predispose', 'Reg', (104, 114)) ('tumors of the paraganglia', 'Disease', (127, 152)) ('sdh', 'Gene', '6390', (78, 81)) ('sdh', 'Gene', '6390', (85, 88)) ('succinate dehydrogenase', 'Gene', '6390', (27, 50)) ('SDH', 'Gene', '6390', (52, 55)) ('succinate dehydrogenase', 'Gene', (27, 50)) ('tumors', 'Phenotype', 'HP:0002664', (127, 133)) ('sdh', 'Gene', (96, 99)) ('sdh', 'Gene', '6390', (96, 99)) ('SDH', 'Gene', (52, 55)) ('tumors of the paraganglia', 'Disease', 'MESH:D009369', (127, 152)) ('mutations', 'Var', (10, 19)) ('sdh', 'Gene', (71, 74)) 34815 32993074 The sensitivity (Figure 3, below the dashed line) of the pair of P-MN and P-NMN (51 of 54 PPGL detected) was higher (p <= 0.02) than that of the pair of U-A and U-NA (42 of 54 PPGL detected), but not (p = n.s.) ('PPGL', 'Chemical', '-', (90, 94)) ('PGL', 'Phenotype', 'HP:0002668', (177, 180)) ('P-MN', 'Chemical', '-', (65, 69)) ('P-NMN', 'Chemical', '-', (74, 79)) ('sensitivity', 'MPA', (4, 15)) ('higher', 'PosReg', (109, 115)) ('U-NA', 'Chemical', '-', (161, 165)) ('P-NMN', 'Var', (74, 79)) ('P-MN', 'Var', (65, 69)) ('PGL', 'Phenotype', 'HP:0002668', (91, 94)) ('PPGL', 'Chemical', '-', (176, 180)) 34817 32993074 Specificity (Figure 3, above the dashed line) was highest with the combined P-MN and P-NMN (no false positives of 889 patients without PPGL), and higher (p < 0.001) than that of the pair of 24 h-urinary metanephrines (236 false positive) and of plasma-free metanephrines (46 false positive), when using the corrected ULN as proposed by others. ('higher', 'PosReg', (146, 152)) ('P-MN', 'Var', (76, 80)) ('P-NMN', 'Var', (85, 90)) ('metanephrines', 'Chemical', 'MESH:D008676', (203, 216)) ('PPGL', 'Chemical', '-', (135, 139)) ('P-MN', 'Chemical', '-', (76, 80)) ('PGL', 'Phenotype', 'HP:0002668', (136, 139)) ('P-NMN', 'Chemical', '-', (85, 90)) ('metanephrines', 'Chemical', 'MESH:D008676', (257, 270)) ('Specificity', 'MPA', (0, 11)) ('patients', 'Species', '9606', (118, 126)) 34824 32993074 When the combined models were considered, both the AUC of the pairs of P-MN and P-NMN (0.989, 95% CI: 0.972-1.000), and of U-MN and U-NMN (0.995, 95% CI: 0.980-1.000), were larger (p < 0.05) than that of the pair of U-A and U-NA (0.956, 95% CI: 0.930-0.975), but not different (p = n.s.) ('P-NMN', 'Chemical', '-', (80, 85)) ('U-NMN', 'Chemical', '-', (132, 137)) ('U-NMN', 'Var', (132, 137)) ('P-MN', 'Var', (71, 75)) ('P-NMN', 'Var', (80, 85)) ('U-NA', 'Chemical', '-', (224, 228)) ('P-MN', 'Chemical', '-', (71, 75)) ('U-MN', 'CellLine', 'CVCL:U508', (123, 127)) ('U-MN', 'Var', (123, 127)) 34832 32993074 The use of downward corrected ULN of the former, as proposed by others, resulted in a slight improvement of sensitivity, at the cost of a decrease in specificity to the extent to become lower than that of both, U-MNs and U-CATs. ('specificity', 'MPA', (150, 161)) ('ULN', 'Gene', (30, 33)) ('improvement', 'PosReg', (93, 104)) ('U-MNs', 'Chemical', '-', (211, 216)) ('U-CATs', 'Phenotype', 'HP:0011976', (221, 227)) ('sensitivity', 'MPA', (108, 119)) ('lower', 'NegReg', (186, 191)) ('decrease', 'NegReg', (138, 146)) ('downward corrected', 'Var', (11, 29)) ('CATs', 'Species', '9685', (223, 227)) 34834 32993074 Whether a larger number of PPGL would result in a significantly increased sensitivity remains to be determined. ('increased', 'PosReg', (64, 73)) ('PGL', 'Phenotype', 'HP:0002668', (28, 31)) ('PPGL', 'Chemical', '-', (27, 31)) ('PPGL', 'Var', (27, 31)) ('sensitivity', 'MPA', (74, 85)) 34841 32993074 Further quality control studies have found that the linearity of the assay for P-MN exceeded the manufacturer's claim of precision (that of P-NMN was in accord), and that both P-MN and P-NMN underestimated the Royal College of Pathologists Australasia Quality Assurance Program target value by 15.6% and 18.3%, respectively. ('P-NMN', 'Var', (185, 190)) ('underestimated', 'NegReg', (191, 205)) ('P-MN', 'Chemical', '-', (79, 83)) ('P-MN', 'Var', (176, 180)) ('P-MN', 'Chemical', '-', (176, 180)) ('P-NMN', 'Chemical', '-', (140, 145)) ('P-NMN', 'Chemical', '-', (185, 190)) ('linearity', 'MPA', (52, 61)) 34892 32993074 Post-test probabilities of PPGL given a positive and negative test result of P-MNs were almost 100% and 0%, respectively, with P-MNs, but only 18% and 0% with U-MNs. ('U-MNs', 'Chemical', '-', (159, 164)) ('P-MNs', 'Chemical', '-', (77, 82)) ('P-MNs', 'Disease', (77, 82)) ('P-MNs', 'Var', (127, 132)) ('PGL', 'Phenotype', 'HP:0002668', (28, 31)) ('PPGL', 'Chemical', '-', (27, 31)) ('P-MNs', 'Chemical', '-', (127, 132)) 34913 29450723 Currently, a well-characterized syndromic presentation includes the existence of other tumor types associated with the presence of a PGL (e.g., renal cell carcinoma, gastrointestinal stromal tumor, pituitary adenoma can also be related to SDHx mutations) (Table 1). ('tumor', 'Phenotype', 'HP:0002664', (87, 92)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (198, 215)) ('tumor', 'Phenotype', 'HP:0002664', (191, 196)) ('presence', 'Var', (119, 127)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (198, 215)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (144, 164)) ('pituitary adenoma', 'Disease', (198, 215)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (166, 196)) ('mutations', 'Var', (244, 253)) ('SDHx', 'Gene', (239, 243)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (166, 196)) ('tumor', 'Disease', (87, 92)) ('tumor', 'Disease', (191, 196)) ('tumor', 'Disease', 'MESH:D009369', (87, 92)) ('renal cell carcinoma', 'Disease', (144, 164)) ('PGL', 'Gene', (133, 136)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (144, 164)) ('gastrointestinal stromal tumor', 'Disease', (166, 196)) ('carcinoma', 'Phenotype', 'HP:0030731', (155, 164)) ('tumor', 'Disease', 'MESH:D009369', (191, 196)) 34915 29450723 They can also be revealed by screening patients who harbor mutations in one of the PHEO/PGL susceptibility genes. ('PHEO/PGL', 'Gene', (83, 91)) ('patients', 'Species', '9606', (39, 47)) ('mutations', 'Var', (59, 68)) 34920 29450723 There are a few true single pathognomonic findings that will allow for definitive diagnosis of MEN2 by clinical inspection, including the presence of nostalgia paraesthetica (posterior pigmented pruritic patch and nostalgia) in MEN2A with codon 634 mutation or marfanoid body habitus (excessively long arms and legs) and thickened protruding lips due to multiple mucosal neuromas (also present on the distal portion of the tongue and gingiva) in MEN2B. ('marfanoid body habitus', 'Phenotype', 'HP:0001519', (261, 283)) ('MEN2A', 'Gene', (228, 233)) ('MEN2B', 'Gene', '5979', (446, 451)) ('multiple mucosal neuromas', 'Disease', (354, 379)) ('multiple mucosal neuromas', 'Phenotype', 'HP:0031023', (354, 379)) ('protruding lips due', 'Phenotype', 'HP:0012471', (331, 350)) ('nostalgia paraesthetica', 'Disease', 'MESH:C563590', (150, 173)) ('pigmented pruritic patch and nostalgia', 'Disease', 'MESH:D010859', (185, 223)) ('neuromas', 'Phenotype', 'HP:0030430', (371, 379)) ('nostalgia paraesthetica', 'Disease', (150, 173)) ('codon 634 mutation', 'Var', (239, 257)) ('MEN2A', 'Gene', '5979', (228, 233)) ('multiple mucosal neuromas', 'Disease', 'MESH:D018814', (354, 379)) ('MEN2B', 'Gene', (446, 451)) 34925 29450723 Norepinephrine-secreting tumors are characteristic for extra-adrenal PGLs, either sporadic, or those with hereditary background, mainly including mutations in succinate dehydrogenase subunits (SDHx), VHL, and fuma-rate dehydrogenase (FH). ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('VHL', 'Gene', (200, 203)) ('mutations', 'Var', (146, 155)) ('adrenal PGLs', 'Disease', (61, 73)) ('succinate', 'Chemical', 'MESH:D019802', (159, 168)) ('FH', 'Gene', (234, 236)) ('tumors', 'Disease', (25, 31)) ('VHL', 'Gene', '7428', (200, 203)) ('tumors', 'Phenotype', 'HP:0002664', (25, 31)) ('tumors', 'Disease', 'MESH:D009369', (25, 31)) ('PGLs', 'Phenotype', 'HP:0002668', (69, 73)) ('adrenal PGLs', 'Disease', 'MESH:D000310', (61, 73)) ('ret', 'Gene', (18, 21)) ('SDHx', 'Gene', (193, 197)) ('Norepinephrine', 'Chemical', 'MESH:D009638', (0, 14)) ('ret', 'Gene', '5979', (18, 21)) 34927 29450723 They can be sporadic or hereditary, including mutations in ret. ('mutations', 'Var', (46, 55)) ('ret', 'Gene', '5979', (59, 62)) ('ret', 'Gene', (59, 62)) 34930 29450723 Usually, dopamine or MTY elevation is associated with an increase in norepinephrine or normetanephrine, which is commonly seen in patients with SDHx mutations (Table 1). ('mutations', 'Var', (149, 158)) ('dopamine', 'MPA', (9, 17)) ('MTY elevation', 'MPA', (21, 34)) ('dopamine', 'Chemical', 'MESH:D004298', (9, 17)) ('norepinephrine', 'MPA', (69, 83)) ('SDHx', 'Gene', (144, 148)) ('patients', 'Species', '9606', (130, 138)) ('increase', 'PosReg', (57, 65)) ('MTY', 'Chemical', 'MESH:C001746', (21, 24)) ('normetanephrine', 'MPA', (87, 102)) ('normetanephrine', 'Chemical', 'MESH:D009647', (87, 102)) ('norepinephrine', 'Chemical', 'MESH:D009638', (69, 83)) 34946 29450723 To circumvent these limitations and drawbacks, the use of 124I-MIBG could provide higher resolution images with potential additional benefits of prospective dosimetry for radionuclide therapy. ('124I-MIBG', 'Var', (58, 67)) ('higher', 'PosReg', (82, 88)) ('124I-MIBG', 'Chemical', '-', (58, 67)) 34967 29450723 Recent studies suggest that the accumulation of succinate due to the TCA defect plays a major role in glucose uptake by PHEO cells, not only via stabilization of hypoxia-inducibal factors (HIFs) proteins (pseudohypoxia) but also by endothelial cells via hormone-like action. ('succinate', 'Chemical', 'MESH:D019802', (48, 57)) ('HIFs', 'Disease', (189, 193)) ('glucose', 'Chemical', 'MESH:D005947', (102, 109)) ('TCA', 'Gene', (69, 72)) ('defect', 'Var', (73, 79)) ('glucose uptake', 'MPA', (102, 116)) ('hypoxia', 'Disease', 'MESH:D000860', (211, 218)) ('hypoxia', 'Disease', 'MESH:D000860', (162, 169)) ('TCA', 'Chemical', 'MESH:D014238', (69, 72)) ('succinate', 'MPA', (48, 57)) ('accumulation', 'PosReg', (32, 44)) ('proteins', 'Protein', (195, 203)) ('HIFs', 'Disease', 'None', (189, 193)) ('hypoxia', 'Disease', (162, 169)) ('stabilization', 'MPA', (145, 158)) ('hypoxia', 'Disease', (211, 218)) 34980 29450723 In metastatic PPGLs, 131I-MIBG provides symptomatic relief in approximately 75% of cases, and a partial radio-logical response in about 30%, with relatively limited side effects. ('symptomatic', 'MPA', (40, 51)) ('131I-MIBG', 'Var', (21, 30)) ('PPGLs', 'Chemical', '-', (14, 19)) ('MIBG', 'Chemical', 'MESH:D019797', (26, 30)) ('PGLs', 'Phenotype', 'HP:0002668', (15, 19)) 34992 31666924 Mutational profile and genotype/phenotype correlation of non-familial pheochromocytoma and paraganglioma About 30%-40% of patients with pheochromocytoma (PCC) and paraganglioma (PGL) have underlying germline mutations in certain susceptibility genes despite absent family history of these tumors. ('pheochromocytoma', 'Disease', 'MESH:D010673', (70, 86)) ('tumors', 'Disease', 'MESH:D009369', (289, 295)) ('paraganglioma', 'Disease', (163, 176)) ('pheochromocytoma', 'Disease', (70, 86)) ('PGL', 'Disease', 'MESH:D010235', (178, 181)) ('paraganglioma', 'Disease', 'MESH:D010235', (163, 176)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (70, 86)) ('paraganglioma', 'Disease', (91, 104)) ('paraganglioma', 'Disease', 'MESH:D010235', (91, 104)) ('tumors', 'Phenotype', 'HP:0002664', (289, 295)) ('PGL', 'Disease', (178, 181)) ('PCC', 'Disease', 'MESH:D010673', (154, 157)) ('patients', 'Species', '9606', (122, 130)) ('paraganglioma', 'Phenotype', 'HP:0002668', (163, 176)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (136, 152)) ('paraganglioma', 'Phenotype', 'HP:0002668', (91, 104)) ('tumor', 'Phenotype', 'HP:0002664', (289, 294)) ('pheochromocytoma', 'Disease', (136, 152)) ('PCC', 'Disease', (154, 157)) ('germline mutations', 'Var', (199, 217)) ('tumors', 'Disease', (289, 295)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (136, 152)) 34994 31666924 Results: Of 101 cases with PPGL, 37/101 (36.6%) had germline mutations. ('PPGL', 'Disease', (27, 31)) ('germline mutations', 'Var', (52, 70)) ('PPGL', 'Disease', 'MESH:D010673', (27, 31)) 34995 31666924 The most commonly mutated gene was SDHB (21/101 cases, 20.8%) and the most common SDHB mutation was c.268C>T, p.R90X occurring in 12/21 (57%) cases. ('p.R90X', 'Mutation', 'p.R90X', (110, 116)) ('SDHB', 'Gene', (35, 39)) ('SDHB', 'Gene', '6390', (82, 86)) ('c.268C>T', 'Var', (100, 108)) ('c.268C>T', 'Mutation', 'c.268C>T', (100, 108)) ('SDHB', 'Gene', (82, 86)) ('SDHB', 'Gene', '6390', (35, 39)) ('p.R90X', 'Var', (110, 116)) 34996 31666924 Mutations also occurred in SDHC (4/101, 3.96%), SDHD (3/101, 3%), VHL (2/101, 2%) and MAX (2/101, 2%) genes. ('SDHC', 'Gene', (27, 31)) ('MAX', 'Gene', (86, 89)) ('occurred', 'Reg', (15, 23)) ('SDHD', 'Gene', '6392', (48, 52)) ('SDHC', 'Gene', '6391', (27, 31)) ('Mutations', 'Var', (0, 9)) ('VHL', 'Gene', (66, 69)) ('SDHD', 'Gene', (48, 52)) ('VHL', 'Gene', '7428', (66, 69)) 34997 31666924 The following genes were mutated in 1 patient each (1%), RET, SDHA, SDHAF2, TMEM127 and NF1. ('SDHAF2', 'Gene', '54949', (68, 74)) ('NF1', 'Gene', (88, 91)) ('SDHA', 'Gene', '6389', (62, 66)) ('SDHA', 'Gene', (62, 66)) ('SDHA', 'Gene', '6389', (68, 72)) ('NF1', 'Gene', '4763', (88, 91)) ('TMEM127', 'Gene', (76, 83)) ('RET', 'Gene', (57, 60)) ('TMEM127', 'Gene', '55654', (76, 83)) ('patient', 'Species', '9606', (38, 45)) ('RET', 'Gene', '5979', (57, 60)) ('mutated', 'Var', (25, 32)) ('SDHA', 'Gene', (68, 72)) ('SDHAF2', 'Gene', (68, 74)) 34998 31666924 Metastatic PPGL occurred in 6/21 cases (28.6%) with SDHB mutations and in 1 case with SDHAF2 mutation. ('SDHB', 'Gene', (52, 56)) ('SDHAF2', 'Gene', (86, 92)) ('Metastatic PPGL', 'Disease', (0, 15)) ('SDHAF2', 'Gene', '54949', (86, 92)) ('Metastatic PPGL', 'Disease', 'MESH:D010673', (0, 15)) ('occurred', 'Reg', (16, 24)) ('mutations', 'Var', (57, 66)) ('SDHB', 'Gene', '6390', (52, 56)) 35001 31666924 Conclusion: About 37% of PPGL without family history of such tumors harbor germline mutations. ('tumors', 'Disease', (61, 67)) ('tumors', 'Disease', 'MESH:D009369', (61, 67)) ('germline mutations', 'Var', (75, 93)) ('PPGL', 'Disease', (25, 29)) ('harbor', 'Reg', (68, 74)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('tumors', 'Phenotype', 'HP:0002664', (61, 67)) ('PPGL', 'Disease', 'MESH:D010673', (25, 29)) 35003 31666924 SDHB mutations were associated with metastatic PPGL in more than a quarter of cases. ('associated', 'Reg', (20, 30)) ('PPGL', 'Disease', (47, 51)) ('mutations', 'Var', (5, 14)) ('SDHB', 'Gene', '6390', (0, 4)) ('PPGL', 'Disease', 'MESH:D010673', (47, 51)) ('SDHB', 'Gene', (0, 4)) 35005 31666924 While having been considered mostly sporadic for long time, it has become clear over the last 2 decades that 30-40% of these tumors are due to underlying germline mutations in one of several susceptibility genes. ('due to', 'Reg', (136, 142)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('germline mutations', 'Var', (154, 172)) ('tumors', 'Disease', 'MESH:D009369', (125, 131)) ('tumors', 'Phenotype', 'HP:0002664', (125, 131)) ('tumors', 'Disease', (125, 131)) 35016 31666924 SDHD, VHL and MAX genes were mutated in 3 (3%), 2 (2%) and 2 (2%) cases, respectively. ('MAX genes', 'Gene', (14, 23)) ('SDHD', 'Gene', '6392', (0, 4)) ('mutated', 'Var', (29, 36)) ('VHL', 'Gene', (6, 9)) ('VHL', 'Gene', '7428', (6, 9)) ('SDHD', 'Gene', (0, 4)) 35017 31666924 The majority of cases with SDHB mutations presented with abdominal PGL (14/21 cases, 66.7%) (Table 3) including one patient with combined abdominal and head and neck PGL. ('PGL', 'Disease', (166, 169)) ('presented with', 'Reg', (42, 56)) ('PGL', 'Disease', (67, 70)) ('patient', 'Species', '9606', (116, 123)) ('PGL', 'Disease', 'MESH:D010235', (67, 70)) ('PGL', 'Disease', 'MESH:D010235', (166, 169)) ('SDHB', 'Gene', '6390', (27, 31)) ('mutations', 'Var', (32, 41)) ('SDHB', 'Gene', (27, 31)) 35018 31666924 Five cases presented with head/neck PGL of whom one case had bilateral carotid body tumors associated with the c.689G>A, p.R230H mutation. ('p.R230H', 'Mutation', 'p.R230H', (121, 128)) ('PGL', 'Disease', (36, 39)) ('c.689G>A', 'Var', (111, 119)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('presented', 'Reg', (11, 20)) ('p.R230H', 'Var', (121, 128)) ('PGL', 'Disease', 'MESH:D010235', (36, 39)) ('carotid body tumors', 'Phenotype', 'HP:0002668', (71, 90)) ('carotid body tumor', 'Phenotype', 'HP:0002668', (71, 89)) ('tumors', 'Phenotype', 'HP:0002664', (84, 90)) ('bilateral carotid body tumors', 'Disease', (61, 90)) ('bilateral carotid body tumors', 'Disease', 'MESH:D002345', (61, 90)) ('c.689G>A', 'Mutation', 'c.689G>A', (111, 119)) ('associated', 'Reg', (91, 101)) 35021 31666924 The non-sense mutation c.268C>T, p.R90X was the most frequent mutation occurring in 12 out of 21 cases (57%) with SDHB mutations. ('p.R90X', 'Var', (33, 39)) ('c.268C>T', 'Var', (23, 31)) ('c.268C>T', 'Mutation', 'c.268C>T', (23, 31)) ('SDHB', 'Gene', '6390', (114, 118)) ('SDHB', 'Gene', (114, 118)) ('p.R90X', 'Mutation', 'p.R90X', (33, 39)) ('mutations', 'Var', (119, 128)) 35022 31666924 Four patients had SDHC mutations. ('mutations', 'Var', (23, 32)) ('SDHC', 'Gene', '6391', (18, 22)) ('SDHC', 'Gene', (18, 22)) ('patients', 'Species', '9606', (5, 13)) 35025 31666924 The most common variant found was c.34G>A, p. G12S occurring in 7/10 cases with SDHD variants (70%). ('SDHD', 'Gene', (80, 84)) ('G12S', 'SUBSTITUTION', 'None', (46, 50)) ('G12S', 'Var', (46, 50)) ('c.34G>A', 'Mutation', 'c.34G>A', (34, 41)) ('SDHD', 'Gene', '6392', (80, 84)) ('c.34G>A', 'Var', (34, 41)) 35029 31666924 Interestingly, a case with the nonsense mutation c.15G>A, p.W5X presented with multiple recurrent head and neck PGLs (Table 4). ('p.W5X', 'Mutation', 'p.W5X', (58, 63)) ('c.15G>A', 'Var', (49, 56)) ('PGLs', 'Disease', 'MESH:D010235', (112, 116)) ('PGLs', 'Disease', (112, 116)) ('c.15G>A', 'Mutation', 'c.15G>A', (49, 56)) 35030 31666924 Only one patient without family or personal history of multiple endocrine neoplasia type 2 presented with abdominal PGL and his genetic testing revealed the well-known c.1900T>C, p.C634R (Table 4). ('c.1900T>C', 'Mutation', 'c.1900T>C', (168, 177)) ('p.C634R', 'Mutation', 'p.C634R', (179, 186)) ('c.1900T>C', 'Var', (168, 177)) ('endocrine neoplasia type', 'Disease', 'MESH:D018813', (64, 88)) ('endocrine neoplasia type', 'Disease', (64, 88)) ('PGL', 'Disease', (116, 119)) ('neoplasia', 'Phenotype', 'HP:0002664', (74, 83)) ('p.C634R', 'Var', (179, 186)) ('patient', 'Species', '9606', (9, 16)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (64, 83)) ('PGL', 'Disease', 'MESH:D010235', (116, 119)) 35031 31666924 In addition, the c.2071G>A, p.G691S variant is a single nucleotide polymorphism (SNP) that was quite common occurring in 6 cases (5 PCC and 1 abdominal PGL). ('c.2071G>A', 'Var', (17, 26)) ('p.G691S', 'Var', (28, 35)) ('PCC', 'Disease', (132, 135)) ('PGL', 'Disease', (152, 155)) ('PCC', 'Disease', 'MESH:D010673', (132, 135)) ('p.G691S', 'Mutation', 'rs1799939', (28, 35)) ('PGL', 'Disease', 'MESH:D010235', (152, 155)) ('c.2071G>A', 'Mutation', 'c.2071G>A', (17, 26)) 35033 31666924 VHL mutations were detected in 2 cases (Table 4). ('mutations', 'Var', (4, 13)) ('detected', 'Reg', (19, 27)) ('VHL', 'Gene', (0, 3)) ('VHL', 'Gene', '7428', (0, 3)) 35035 31666924 MAX gene was mutated in 2 cases both of whom presented with bilateral PCC. ('MAX gene', 'Gene', (0, 8)) ('PCC', 'Disease', (70, 73)) ('PCC', 'Disease', 'MESH:D010673', (70, 73)) ('presented', 'Reg', (45, 54)) ('mutated', 'Var', (13, 20)) 35036 31666924 A novel SDHAF2 variant was found in one case of metastatic PCC. ('variant', 'Var', (15, 22)) ('SDHAF2', 'Gene', '54949', (8, 14)) ('SDHAF2', 'Gene', (8, 14)) ('found', 'Reg', (27, 32)) ('PCC', 'Disease', (59, 62)) ('PCC', 'Disease', 'MESH:D010673', (59, 62)) 35039 31666924 The patient with NF1 variant does not have features of neurofibromatosis. ('neurofibromatosis', 'Phenotype', 'HP:0001067', (55, 72)) ('neurofibromatosis', 'Disease', 'MESH:D017253', (55, 72)) ('patient', 'Species', '9606', (4, 11)) ('NF1', 'Gene', (17, 20)) ('variant', 'Var', (21, 28)) ('NF1', 'Gene', '4763', (17, 20)) ('neurofibromatosis', 'Disease', (55, 72)) 35043 31666924 In one unusual case with metastatic PCC, the underlying mutation was a novel SDHAF2 variant that is likely pathogenic (Tables 4 and 5). ('PCC', 'Disease', (36, 39)) ('PCC', 'Disease', 'MESH:D010673', (36, 39)) ('variant', 'Var', (84, 91)) ('SDHAF2', 'Gene', '54949', (77, 83)) ('metastatic', 'Disease', (25, 35)) ('SDHAF2', 'Gene', (77, 83)) 35048 31666924 Germline mutations were found in 29 of 69 (42%) of these PGLs while 40 cases were negative for any underlying mutation. ('Germline mutations', 'Var', (0, 18)) ('found', 'Reg', (24, 29)) ('PGLs', 'Disease', 'MESH:D010235', (57, 61)) ('PGLs', 'Disease', (57, 61)) 35049 31666924 These cases with positive mutations include 17 cases of abdominal PGL (5 metastatic), 11 cases of head and neck PGL (two bilateral) and one case of abdominal and head and neck PGLs (Table 5). ('PGLs', 'Disease', 'MESH:D010235', (176, 180)) ('PGL', 'Disease', (176, 179)) ('PGL', 'Disease', 'MESH:D010235', (66, 69)) ('PGL', 'Disease', 'MESH:D010235', (176, 179)) ('PGLs', 'Disease', (176, 180)) ('PGL', 'Disease', (112, 115)) ('mutations', 'Var', (26, 35)) ('PGL', 'Disease', 'MESH:D010235', (112, 115)) ('PGL', 'Disease', (66, 69)) 35052 31666924 Two patients had metastatic PCC (one had no mutation and one had an SDHAF2 mutation) (Tables 4 and 5). ('PCC', 'Disease', (28, 31)) ('SDHAF2', 'Gene', '54949', (68, 74)) ('mutation', 'Var', (75, 83)) ('patients', 'Species', '9606', (4, 12)) ('PCC', 'Disease', 'MESH:D010673', (28, 31)) ('SDHAF2', 'Gene', (68, 74)) 35053 31666924 Six patients had abdominal PGL and SDHB mutations; one of them had both abdominal and head and neck PGLs (Table 3) and 2 patients had metastatic head and neck PGL (both negative for mutations). ('SDHB', 'Gene', '6390', (35, 39)) ('PGL', 'Disease', 'MESH:D010235', (100, 103)) ('PGLs', 'Disease', (100, 104)) ('SDHB', 'Gene', (35, 39)) ('PGL', 'Disease', 'MESH:D010235', (159, 162)) ('mutations', 'Var', (40, 49)) ('PGL', 'Disease', (27, 30)) ('PGL', 'Disease', (100, 103)) ('patients', 'Species', '9606', (4, 12)) ('PGLs', 'Disease', 'MESH:D010235', (100, 104)) ('patients', 'Species', '9606', (121, 129)) ('PGL', 'Disease', (159, 162)) ('PGL', 'Disease', 'MESH:D010235', (27, 30)) 35065 31666924 Overall, we found a high rate (36.6%) of germline mutations in this series of patients with PPGL without family history of these tumors. ('PPGL', 'Disease', (92, 96)) ('tumors', 'Disease', (129, 135)) ('tumors', 'Disease', 'MESH:D009369', (129, 135)) ('tumors', 'Phenotype', 'HP:0002664', (129, 135)) ('patients', 'Species', '9606', (78, 86)) ('PPGL', 'Disease', 'MESH:D010673', (92, 96)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('germline mutations', 'Var', (41, 59)) 35066 31666924 In our study, SDHB mutations are the most common mutations in PPGL (20.8%) in general and in PGL in particular (30.4%). ('PGL', 'Disease', 'MESH:D010235', (63, 66)) ('PGL', 'Disease', 'MESH:D010235', (93, 96)) ('PPGL', 'Disease', 'MESH:D010673', (62, 66)) ('mutations', 'Var', (19, 28)) ('PPGL', 'Disease', (62, 66)) ('SDHB', 'Gene', '6390', (14, 18)) ('PGL', 'Disease', (63, 66)) ('SDHB', 'Gene', (14, 18)) ('PGL', 'Disease', (93, 96)) 35067 31666924 SDHC and SDHD mutations are much less common occurring in 3.9% and 3% respectively. ('SDHD', 'Gene', '6392', (9, 13)) ('SDHD', 'Gene', (9, 13)) ('SDHC', 'Gene', (0, 4)) ('SDHC', 'Gene', '6391', (0, 4)) ('mutations', 'Var', (14, 23)) 35069 31666924 Metastatic PPGL occurred in about 28.6% of patients (6/21) with SDHB mutations and in a patient with SDHAF2 mutation. ('mutations', 'Var', (69, 78)) ('patient', 'Species', '9606', (88, 95)) ('SDHB', 'Gene', '6390', (64, 68)) ('patient', 'Species', '9606', (43, 50)) ('Metastatic PPGL', 'Disease', (0, 15)) ('patients', 'Species', '9606', (43, 51)) ('Metastatic PPGL', 'Disease', 'MESH:D010673', (0, 15)) ('SDHB', 'Gene', (64, 68)) ('occurred', 'Reg', (16, 24)) ('SDHAF2', 'Gene', '54949', (101, 107)) ('SDHAF2', 'Gene', (101, 107)) 35073 31666924 Our study showed that most mutations involve the pseudohypoxemia group with the vast majority occurring in SDHB and to a lesser extent in SDHC and SDHD. ('pseudohypoxemia', 'Disease', (49, 64)) ('mutations', 'Var', (27, 36)) ('SDHB', 'Gene', (107, 111)) ('pseudohypoxemia', 'Disease', 'None', (49, 64)) ('involve', 'Reg', (37, 44)) ('SDHC', 'Gene', (138, 142)) ('SDHD', 'Gene', '6392', (147, 151)) ('SDHC', 'Gene', '6391', (138, 142)) ('SDHD', 'Gene', (147, 151)) ('occurring', 'Reg', (94, 103)) ('SDHB', 'Gene', '6390', (107, 111)) 35074 31666924 These mutations occurred commonly in PGL but very rarely in PCC. ('PGL', 'Disease', (37, 40)) ('PCC', 'Disease', 'MESH:D010673', (60, 63)) ('PCC', 'Disease', (60, 63)) ('occurred', 'Reg', (16, 24)) ('PGL', 'Disease', 'MESH:D010235', (37, 40)) ('mutations', 'Var', (6, 15)) 35075 31666924 SDHB was the most commonly mutated gene (56.8% of patients with positive mutations and 20.8% of all cases studied) and c.268C>T, p.R90X was the most common mutation (Tables 2 and 3). ('c.268C>T', 'Var', (119, 127)) ('c.268C>T', 'Mutation', 'c.268C>T', (119, 127)) ('patients', 'Species', '9606', (50, 58)) ('p.R90X', 'Var', (129, 135)) ('SDHB', 'Gene', '6390', (0, 4)) ('p.R90X', 'Mutation', 'p.R90X', (129, 135)) ('SDHB', 'Gene', (0, 4)) 35076 31666924 By contrast, in the recently published TCGA data from an international consortium population, SDHB germline mutations occurred only in 9.8% (17/173 cases) and the p.R90X mutation occurred only in 1/17 cases. ('SDHB', 'Gene', (94, 98)) ('p.R90X', 'Mutation', 'p.R90X', (163, 169)) ('p.R90X', 'Var', (163, 169)) ('SDHB', 'Gene', '6390', (94, 98)) 35077 31666924 The most frequent SDHB mutation in TCGA data was p.I127S (5/17 cases), which was not found in our patients. ('SDHB', 'Gene', (18, 22)) ('p.I127S', 'Var', (49, 56)) ('patients', 'Species', '9606', (98, 106)) ('p.I127S', 'Mutation', 'p.I127S', (49, 56)) ('SDHB', 'Gene', '6390', (18, 22)) 35079 31666924 By contrast, in the original report of germline mutations in non-syndromic PCC from Europe, SDHB mutations were found in 12 of 271 (4.4%) apparently sporadic PPGL (mostly PCC) which is not much different from our study in which 2 out of 32 (6.3%) PCC carry SDHB mutations. ('mutations', 'Var', (97, 106)) ('syndromic', 'Disease', (65, 74)) ('SDHB', 'Gene', '6390', (92, 96)) ('found', 'Reg', (112, 117)) ('PCC', 'Disease', (75, 78)) ('PPGL', 'Disease', (158, 162)) ('PCC', 'Disease', 'MESH:D010673', (75, 78)) ('SDHB', 'Gene', (92, 96)) ('syndromic', 'Disease', 'MESH:D061325', (65, 74)) ('PCC', 'Disease', (171, 174)) ('SDHB', 'Gene', '6390', (257, 261)) ('PCC', 'Disease', (247, 250)) ('SDHB', 'Gene', (257, 261)) ('PCC', 'Disease', 'MESH:D010673', (247, 250)) ('PPGL', 'Disease', 'MESH:D010673', (158, 162)) ('PCC', 'Disease', 'MESH:D010673', (171, 174)) 35080 31666924 A more recent report from Spain in which 329 sporadic single non-familial PPGL were tested for mutations showed an overall prevalence of germline mutations of 14%. ('pain', 'Disease', 'MESH:D010146', (27, 31)) ('pain', 'Disease', (27, 31)) ('PPGL', 'Disease', 'MESH:D010673', (74, 78)) ('germline mutations', 'Var', (137, 155)) ('pain', 'Phenotype', 'HP:0012531', (27, 31)) ('PPGL', 'Disease', (74, 78)) 35081 31666924 Similar to our study, PGL were more commonly mutated (28.7% vs. 42% in our study) and most mutations occurred in SDHB (63% vs. 56.8% in our study) followed by SDHD (13% vs. 8% in our study) and SDHC (4.3% vs. 10.8% in our study) with other genes being rarely mutated. ('SDHC', 'Gene', '6391', (194, 198)) ('SDHB', 'Gene', '6390', (113, 117)) ('SDHD', 'Gene', (159, 163)) ('PGL', 'Disease', (22, 25)) ('occurred', 'Reg', (101, 109)) ('SDHB', 'Gene', (113, 117)) ('PGL', 'Disease', 'MESH:D010235', (22, 25)) ('mutations', 'Var', (91, 100)) ('SDHC', 'Gene', (194, 198)) ('SDHD', 'Gene', '6392', (159, 163)) 35082 31666924 In another study from USA, a review of 129 cases of PPGL who underwent surgery was undertaken and of 42 patients that were tested, 21 (50%) were positive for germline mutations. ('PPGL', 'Disease', 'MESH:D010673', (52, 56)) ('germline mutations', 'Var', (158, 176)) ('PPGL', 'Disease', (52, 56)) ('positive', 'Reg', (145, 153)) ('patients', 'Species', '9606', (104, 112)) 35087 31666924 In the current study, SDHC mutations were the second most common mutations in PGL occurring in 4 out of 37 cases (10.8%) with positive mutations. ('mutations', 'Var', (27, 36)) ('SDHC', 'Gene', (22, 26)) ('SDHC', 'Gene', '6391', (22, 26)) ('PGL', 'Disease', (78, 81)) ('PGL', 'Disease', 'MESH:D010235', (78, 81)) 35089 31666924 In a review of a number of series with more than 3000 patients with PPGL, SDHC mutations occurred only in 1% of cases (31/3193 cases). ('PPGL', 'Disease', (68, 72)) ('patients', 'Species', '9606', (54, 62)) ('PPGL', 'Disease', 'MESH:D010673', (68, 72)) ('SDHC', 'Gene', (74, 78)) ('mutations', 'Var', (79, 88)) ('SDHC', 'Gene', '6391', (74, 78)) 35091 31666924 Similarly, in a recent report from Europe, SDHC mutations were not found in 87 cases of PCC. ('SDHC', 'Gene', '6391', (43, 47)) ('PCC', 'Disease', (88, 91)) ('PCC', 'Disease', 'MESH:D010673', (88, 91)) ('mutations', 'Var', (48, 57)) ('SDHC', 'Gene', (43, 47)) 35092 31666924 An SDHC founder mutation (c.397C>T, p. Arg133Ter) was detected in about 70% of a cohort of 29 French Canadian patients presenting mostly (70%) with head and neck PGL and with distant metastasis in 30% of them. ('Arg133Ter', 'Var', (39, 48)) ('PGL', 'Disease', (162, 165)) ('SDHC', 'Gene', (3, 7)) ('PGL', 'Disease', 'MESH:D010235', (162, 165)) ('SDHC', 'Gene', '6391', (3, 7)) ('distant metastasis', 'CPA', (175, 193)) ('Arg133Ter', 'SUBSTITUTION', 'None', (39, 48)) ('c.397C>T', 'Mutation', 'c.397C>T', (26, 34)) ('c.397C>T', 'Var', (26, 34)) ('patients', 'Species', '9606', (110, 118)) 35096 31666924 SDHD mutations occurred in three cases with head and neck PGL, two unilateral and one bilateral. ('occurred', 'Reg', (15, 23)) ('mutations', 'Var', (5, 14)) ('SDHD', 'Gene', '6392', (0, 4)) ('PGL', 'Disease', (58, 61)) ('SDHD', 'Gene', (0, 4)) ('PGL', 'Disease', 'MESH:D010235', (58, 61)) 35097 31666924 Apart from these 3 cases, the most common SDHD variant found in this study was the c.34G>A, p.G12S occurring in 7 cases. ('c.34G>A', 'Mutation', 'c.34G>A', (83, 90)) ('p.G12S', 'Mutation', 'p.G12S', (92, 98)) ('c.34G>A', 'Var', (83, 90)) ('SDHD', 'Gene', '6392', (42, 46)) ('SDHD', 'Gene', (42, 46)) ('p.G12S', 'Var', (92, 98)) 35098 31666924 If considered pathogenic, SDHD mutations would be the second most common mutations after SDHB (10/48, 20.8%). ('mutations', 'Var', (31, 40)) ('common', 'Reg', (66, 72)) ('SDHD', 'Gene', (26, 30)) ('SDHD', 'Gene', '6392', (26, 30)) ('SDHB', 'Gene', '6390', (89, 93)) ('SDHB', 'Gene', (89, 93)) 35100 31666924 In fact, all SDHD mutations were also rare in the TCGA data occurring only in 3 out of 173 cases (2%). ('SDHD', 'Gene', (13, 17)) ('SDHD', 'Gene', '6392', (13, 17)) ('mutations', 'Var', (18, 27)) 35102 31666924 SDHA mutations occurred only once in a patient with carotid body tumor (Table 4). ('carotid body tumor', 'Disease', 'MESH:D002345', (52, 70)) ('patient', 'Species', '9606', (39, 46)) ('SDHA', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) ('SDHA', 'Gene', '6389', (0, 4)) ('carotid body tumor', 'Disease', (52, 70)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) ('carotid body tumor', 'Phenotype', 'HP:0002668', (52, 70)) 35103 31666924 Mutations in this gene are rare but can be associated with aggressive metastatic PGL similar to those of SDHB. ('associated with', 'Reg', (43, 58)) ('SDHB', 'Gene', '6390', (105, 109)) ('PGL', 'Disease', (81, 84)) ('SDHB', 'Gene', (105, 109)) ('Mutations', 'Var', (0, 9)) ('PGL', 'Disease', 'MESH:D010235', (81, 84)) 35104 31666924 One patient had an SDHAF2 variant of unknown significance and presented with metastatic PCC. ('PCC', 'Disease', (88, 91)) ('variant', 'Var', (26, 33)) ('PCC', 'Disease', 'MESH:D010673', (88, 91)) ('patient', 'Species', '9606', (4, 11)) ('SDHAF2', 'Gene', '54949', (19, 25)) ('SDHAF2', 'Gene', (19, 25)) 35105 31666924 SDHAF2 mutations are extremely rare and their association with metastatic PPGL has not been reported. ('SDHAF2', 'Gene', '54949', (0, 6)) ('SDHAF2', 'Gene', (0, 6)) ('PPGL', 'Disease', 'MESH:D010673', (74, 78)) ('PPGL', 'Disease', (74, 78)) ('mutations', 'Var', (7, 16)) 35107 31666924 SDHAF2 mutations were not also reported in TCGA data. ('SDHAF2', 'Gene', (0, 6)) ('SDHAF2', 'Gene', '54949', (0, 6)) ('mutations', 'Var', (7, 16)) 35108 31666924 VHL mutations were detected in two patients; one with unilateral and one with bilateral PCC. ('PCC', 'Disease', (88, 91)) ('PCC', 'Disease', 'MESH:D010673', (88, 91)) ('detected', 'Reg', (19, 27)) ('VHL', 'Gene', (0, 3)) ('patients', 'Species', '9606', (35, 43)) ('mutations', 'Var', (4, 13)) ('VHL', 'Gene', '7428', (0, 3)) 35109 31666924 VHL mutations have been commonly reported in hereditary PPGL and can be associated with unilateral or bilateral PCC or less frequently with PGL. ('PGL', 'Disease', 'MESH:D010235', (140, 143)) ('PPGL', 'Disease', 'MESH:D010673', (56, 60)) ('associated', 'Reg', (72, 82)) ('PCC', 'Disease', 'MESH:D010673', (112, 115)) ('PGL', 'Disease', (140, 143)) ('VHL', 'Gene', (0, 3)) ('PGL', 'Disease', (57, 60)) ('PCC', 'Disease', (112, 115)) ('PPGL', 'Disease', (56, 60)) ('reported', 'Reg', (33, 41)) ('unilateral', 'Disease', (88, 98)) ('mutations', 'Var', (4, 13)) ('VHL', 'Gene', '7428', (0, 3)) ('PGL', 'Disease', 'MESH:D010235', (57, 60)) 35113 31666924 In a study of 972 cases from the European-American-Asian Pheochromocytoma and Paraganglioma Registry without mutations in the common PPGL genes, 58 had mutations in less commonly mutated genes (SDHA, TMEM127, SDHAF2) including 8 cases of PCC with MAX mutations. ('SDHA', 'Gene', (209, 213)) ('SDHAF2', 'Gene', (209, 215)) ('PCC', 'Disease', (238, 241)) ('PCC', 'Disease', 'MESH:D010673', (238, 241)) ('PPGL', 'Disease', (133, 137)) ('mutations', 'Var', (152, 161)) ('TMEM127', 'Gene', (200, 207)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (57, 73)) ('SDHA', 'Gene', '6389', (194, 198)) ('TMEM127', 'Gene', '55654', (200, 207)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (78, 91)) ('SDHA', 'Gene', '6389', (209, 213)) ('PPGL', 'Disease', 'MESH:D010673', (133, 137)) ('SDHA', 'Gene', (194, 198)) ('Pheochromocytoma and Paraganglioma', 'Disease', 'MESH:D010673', (57, 91)) ('SDHAF2', 'Gene', '54949', (209, 215)) 35115 31666924 We also found one case with a TMEM127 mutation in an abdominal PGL. ('PGL', 'Disease', 'MESH:D010235', (63, 66)) ('TMEM127', 'Gene', '55654', (30, 37)) ('TMEM127', 'Gene', (30, 37)) ('mutation', 'Var', (38, 46)) ('PGL', 'Disease', (63, 66)) 35116 31666924 TMEM127 mutations are generally more frequent than MAX mutations and may present with PCC, abdominal or head and neck PGL. ('abdominal', 'Disease', (91, 100)) ('PGL', 'Disease', (118, 121)) ('TMEM127', 'Gene', '55654', (0, 7)) ('mutations', 'Var', (8, 17)) ('PGL', 'Disease', 'MESH:D010235', (118, 121)) ('present', 'Reg', (73, 80)) ('PCC', 'Disease', (86, 89)) ('PCC', 'Disease', 'MESH:D010673', (86, 89)) ('TMEM127', 'Gene', (0, 7)) 35119 31666924 SDHB mutations have been associated with increased risk of distant metastasis. ('distant metastasis', 'CPA', (59, 77)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) 35120 31666924 In this study, SDHB mutations remain the most frequently associated mutations with distant metastasis occurring in 6 out of 21 cases (28.6%). ('SDHB', 'Gene', '6390', (15, 19)) ('SDHB', 'Gene', (15, 19)) ('distant metastasis', 'CPA', (83, 101)) ('mutations', 'Var', (20, 29)) ('associated', 'Reg', (57, 67)) 35121 31666924 Only one additional case with an SDHAF2 variant developed distant metastasis. ('distant metastasis', 'CPA', (58, 76)) ('SDHAF2', 'Gene', '54949', (33, 39)) ('variant', 'Var', (40, 47)) ('SDHAF2', 'Gene', (33, 39)) 35123 31666924 Some previously reported mutations are somatic, particularly the WNT-related MAML4 fusion and HRAS mutations. ('MAML4', 'Gene', (77, 82)) ('mutations', 'Var', (99, 108)) ('HRAS', 'Gene', (94, 98)) ('HRAS', 'Gene', '3265', (94, 98)) 35130 31666924 SDHC and SDHD mutations are the second most common genetic alterations in PGL. ('SDHD', 'Gene', (9, 13)) ('SDHD', 'Gene', '6392', (9, 13)) ('SDHC', 'Gene', (0, 4)) ('PGL', 'Disease', (74, 77)) ('SDHC', 'Gene', '6391', (0, 4)) ('common', 'Reg', (44, 50)) ('PGL', 'Disease', 'MESH:D010235', (74, 77)) ('mutations', 'Var', (14, 23)) 35131 31666924 VHL and MAX mutations occur mainly in PCC and tend to present with bilateral disease. ('bilateral disease', 'Disease', 'MESH:D003638', (67, 84)) ('PCC', 'Disease', 'MESH:D010673', (38, 41)) ('bilateral disease', 'Disease', (67, 84)) ('mutations', 'Var', (12, 21)) ('MAX', 'Gene', (8, 11)) ('present with', 'Reg', (54, 66)) ('VHL', 'Gene', (0, 3)) ('VHL', 'Gene', '7428', (0, 3)) ('occur', 'Reg', (22, 27)) ('PCC', 'Disease', (38, 41)) 35143 31666924 We performed polymerase chain reaction (PCR) and direct Sanger sequencing using Big Dye terminator v3.1 cycle sequencing reaction kit and an ABI PRISM 3730XL genetic analyzer (Applied Biosystems) to detect mutations in RET, SDHA, SDHB, SDHC, SDHD, SDHAF2, VHL, MAX and TMEM127. ('SDHA', 'Gene', (224, 228)) ('SDHD', 'Gene', (242, 246)) ('SDHA', 'Gene', (248, 252)) ('RET', 'Gene', (219, 222)) ('SDHA', 'Gene', '6389', (224, 228)) ('SDHB', 'Gene', (230, 234)) ('SDHA', 'Gene', '6389', (248, 252)) ('TMEM127', 'Gene', (269, 276)) ('SDHC', 'Gene', (236, 240)) ('SDHAF2', 'Gene', '54949', (248, 254)) ('SDHAF2', 'Gene', (248, 254)) ('mutations', 'Var', (206, 215)) ('TMEM127', 'Gene', '55654', (269, 276)) ('VHL', 'Gene', (256, 259)) ('SDHD', 'Gene', '6392', (242, 246)) ('RET', 'Gene', '5979', (219, 222)) ('SDHC', 'Gene', '6391', (236, 240)) ('SDHB', 'Gene', '6390', (230, 234)) ('VHL', 'Gene', '7428', (256, 259)) 35156 31027285 CGA is elevated in PPGLs, as well as in other neuroendocrine or non-neuroendocrine neoplasia and under clinical conditions increasing adrenergic activity. ('CGA', 'Gene', (0, 3)) ('PPGLs', 'Chemical', '-', (19, 24)) ('neoplasia', 'Phenotype', 'HP:0002664', (83, 92)) ('increasing', 'PosReg', (123, 133)) ('PGL', 'Phenotype', 'HP:0002668', (20, 23)) ('CGA', 'Gene', '1113', (0, 3)) ('adrenergic activity', 'MPA', (134, 153)) ('non-neuroendocrine neoplasia', 'Disease', 'MESH:D018358', (64, 92)) ('neuroendocrine neoplasia', 'Phenotype', 'HP:0100634', (68, 92)) ('PPGLs', 'Var', (19, 24)) ('non-neuroendocrine neoplasia', 'Disease', (64, 92)) ('elevated', 'PosReg', (7, 15)) 35173 31027285 The pseudohypoxia group is characterized by somatic or germline mutations and silent or dopaminergic and/or noradrenergic secretory profiles in the tricarboxylic acid cycle related to succinate dehydrogenase subunits SDHA, SDHB, SDHC, SDHD, SDHAF1, SDHAF2 (together SDHx) or in fumarate hydratase (FH), a second enzyme in the tricarboxylic acid cycle, in von Hippel-Lindau disease (VHL), endothelial PAS domain 1 (EPAS10, also known as hypoxia-inducible factor 2alpha (HIF2A)), and prolylhydroxylases PHD1 and PHD2. ('SDHA', 'Gene', (217, 221)) ('SDHA', 'Gene', (241, 245)) ('SDHA', 'Gene', '6389', (249, 253)) ('von Hippel-Lindau disease', 'Disease', (355, 380)) ('fumarate hydratase', 'Gene', '2271', (278, 296)) ('PHD1', 'Gene', (501, 505)) ('SDHA', 'Gene', '6389', (217, 221)) ('SDHAF2', 'Gene', '54949', (249, 255)) ('SDHB', 'Gene', (223, 227)) ('SDHA', 'Gene', '6389', (241, 245)) ('SDHAF2', 'Gene', (249, 255)) ('hypoxia-inducible factor 2alpha', 'Gene', '2034', (436, 467)) ('PHD1', 'Gene', '112398', (501, 505)) ('pseudohypoxia', 'Disease', (4, 17)) ('mutations', 'Var', (64, 73)) ('FH', 'Gene', '2271', (298, 300)) ('VHL', 'Disease', (382, 385)) ('SDHC', 'Gene', '6391', (229, 233)) ('pseudohypoxia', 'Disease', 'None', (4, 17)) ('PHD2', 'Gene', (510, 514)) ('SDHD', 'Gene', '6392', (235, 239)) ('SDHAF1', 'Gene', '644096', (241, 247)) ('fumarate hydratase', 'Gene', (278, 296)) ('PHD2', 'Gene', '54583', (510, 514)) ('SDHD', 'Gene', (235, 239)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (355, 380)) ('hypoxia-inducible factor 2alpha', 'Gene', (436, 467)) ('SDHB', 'Gene', '6390', (223, 227)) ('SDHA', 'Gene', (249, 253)) ('SDHAF1', 'Gene', (241, 247)) ('VHL', 'Disease', 'MESH:D006623', (382, 385)) ('SDHC', 'Gene', (229, 233)) 35174 31027285 The wnt signaling group includes somatic mutations in cold shock domain containing E1 (CSDE1), alpha thalassemia/mental retardation syndrome X-linked (ATRX) and mastermind-like transcriptional coactivator (3MAML3) with mixed noradrenergic and adrenergic secretory phenotype. ('mutations', 'Var', (41, 50)) ('CSDE1', 'Gene', (87, 92)) ('CSDE1', 'Gene', '7812', (87, 92)) ('thalassemia/mental retardation syndrome X-linked', 'Disease', (101, 149)) ('mental retardation', 'Phenotype', 'HP:0001249', (113, 131)) ('thalassemia/mental retardation syndrome X-linked', 'Disease', 'MESH:C538258', (101, 149)) ('shock', 'Phenotype', 'HP:0031273', (59, 64)) 35175 31027285 The kinase signaling group consists of germline or somatic mutations in RET proto-oncogene (syndrome MEN 2A, 2B), neurofibromin 1 (NF1), transmembrane protein 127 (TMEM127), MYC-associated factor X (MAX), kinesin-like protein (KIF1BB), receptor tyrosine kinase (MET) and GTPase, Harvey rat sarcoma viral oncogene homolog (HRAS) with adrenergic or mixed noradrenergic and adrenergic secretory profiles. ('MAX', 'Gene', '4149', (199, 202)) ('HRAS', 'Gene', (322, 326)) ('MYC-associated factor X', 'Gene', '4149', (174, 197)) ('rat', 'Species', '10116', (286, 289)) ('sarcoma', 'Disease', 'MESH:D012509', (290, 297)) ('MEN 2A, 2B', 'Gene', '5979', (101, 111)) ('RET', 'Gene', '5979', (72, 75)) ('TMEM127', 'Gene', (164, 171)) ('sarcoma', 'Disease', (290, 297)) ('neurofibromin 1', 'Gene', '4763', (114, 129)) ('MAX', 'Gene', (199, 202)) ('NF1', 'Gene', '4763', (131, 134)) ('HRAS', 'Gene', '293621', (322, 326)) ('neurofibromin 1', 'Gene', (114, 129)) ('mutations', 'Var', (59, 68)) ('TMEM127', 'Gene', '55654', (164, 171)) ('sarcoma', 'Phenotype', 'HP:0100242', (290, 297)) ('RET', 'Gene', (72, 75)) ('NF1', 'Gene', (131, 134)) ('MYC-associated factor X', 'Gene', (174, 197)) 35176 31027285 Mutations in the mitochondrial succinate dehydrogenase enzyme complex subunit B (SDHB) and the tumor suppressor gene Von Hippel-Lindau (VHL) are mainly associated with malignancy. ('malignancy', 'Disease', 'MESH:D009369', (168, 178)) ('malignancy', 'Disease', (168, 178)) ('VHL', 'Disease', 'MESH:D006623', (136, 139)) ('VHL', 'Disease', (136, 139)) ('SDHB', 'Gene', '6390', (81, 85)) ('tumor', 'Disease', 'MESH:D009369', (95, 100)) ('Von Hippel-Lindau', 'Gene', '7428', (117, 134)) ('Mutations', 'Var', (0, 9)) ('Von Hippel-Lindau', 'Gene', (117, 134)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('SDHB', 'Gene', (81, 85)) ('associated', 'Reg', (152, 162)) ('tumor', 'Disease', (95, 100)) 35244 31027285 Five of these patients had a tumor volume less than 20 mm3, and in one PCC patient diagnosed in 2002 with VHL gene mutation, recurrence was observed in 2003, 2005 and 2014. ('tumor', 'Disease', 'MESH:D009369', (29, 34)) ('VHL', 'Disease', (106, 109)) ('VHL', 'Disease', 'MESH:D006623', (106, 109)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('PCC', 'Phenotype', 'HP:0002666', (71, 74)) ('patient', 'Species', '9606', (14, 21)) ('tumor', 'Disease', (29, 34)) ('mutation', 'Var', (115, 123)) ('patient', 'Species', '9606', (75, 82)) ('patients', 'Species', '9606', (14, 22)) 35316 31027285 The CGA is elevated in PPGLs, however, as well as in other neuroendocrine or non-neuroendocrine neoplasia and in clinical conditions with increased adrenergic activity. ('CGA', 'Gene', (4, 7)) ('PPGLs', 'Chemical', '-', (23, 28)) ('neoplasia', 'Phenotype', 'HP:0002664', (96, 105)) ('non-neuroendocrine neoplasia', 'Disease', 'MESH:D018358', (77, 105)) ('PGL', 'Phenotype', 'HP:0002668', (24, 27)) ('neuroendocrine neoplasia', 'Phenotype', 'HP:0100634', (81, 105)) ('CGA', 'Gene', '1113', (4, 7)) ('non-neuroendocrine neoplasia', 'Disease', (77, 105)) ('elevated', 'PosReg', (11, 19)) ('PPGLs', 'Var', (23, 28)) 35321 31027285 In the PCC group, mutations in the RET gene were found in seven patients, three were diagnosed with MEN2A and MTC, four had MEN2B and MTC. ('mutations', 'Var', (18, 27)) ('RET', 'Gene', '5979', (35, 38)) ('patients', 'Species', '9606', (64, 72)) ('MEN2A', 'Gene', (100, 105)) ('MEN2A', 'Gene', '5979', (100, 105)) ('MEN2B', 'Gene', (124, 129)) ('MTC', 'Phenotype', 'HP:0002865', (110, 113)) ('MEN2B', 'Gene', '5979', (124, 129)) ('RET', 'Gene', (35, 38)) ('MTC', 'Disease', (110, 113)) ('PCC', 'Phenotype', 'HP:0002666', (7, 10)) ('MTC', 'Phenotype', 'HP:0002865', (134, 137)) ('found', 'Reg', (49, 54)) 35322 31027285 Mutations in the VHL gene were observed in five patients, in three patients were mutations in the NF1 gene, two patients had mutations in the MAX gene, one patient in the MET gene, and in 50 patients the mutations were not determined. ('patients', 'Species', '9606', (191, 199)) ('patient', 'Species', '9606', (112, 119)) ('patients', 'Species', '9606', (67, 75)) ('VHL', 'Disease', (17, 20)) ('patient', 'Species', '9606', (191, 198)) ('MAX', 'Gene', (142, 145)) ('patient', 'Species', '9606', (67, 74)) ('VHL', 'Disease', 'MESH:D006623', (17, 20)) ('patients', 'Species', '9606', (112, 120)) ('MAX', 'Gene', '4149', (142, 145)) ('NF1', 'Gene', (98, 101)) ('mutations', 'Reg', (81, 90)) ('Mutations', 'Var', (0, 9)) ('patient', 'Species', '9606', (48, 55)) ('NF1', 'Gene', '4763', (98, 101)) ('observed', 'Reg', (31, 39)) ('patients', 'Species', '9606', (48, 56)) ('patient', 'Species', '9606', (156, 163)) 35323 31027285 In the PGL group, mutations in the SDHB gene were found in two patients, while mutation in the SDHD gene was observed in one patient. ('SDHB', 'Gene', (35, 39)) ('SDHD', 'Gene', '6392', (95, 99)) ('found', 'Reg', (50, 55)) ('PGL', 'Phenotype', 'HP:0002668', (7, 10)) ('SDHD', 'Gene', (95, 99)) ('patient', 'Species', '9606', (63, 70)) ('patient', 'Species', '9606', (125, 132)) ('patients', 'Species', '9606', (63, 71)) ('SDHB', 'Gene', '6390', (35, 39)) ('mutations', 'Var', (18, 27)) 35355 30106970 Mathematical modeling of disease dynamics in SDHB- and SDHD-related paraganglioma: Further step in understanding hereditary tumor differences and future therapeutic strategies Succinate dehydrogenase subunit B and D (SDHB and SDHD) mutations represent the most frequent cause of hereditary pheochromocytoma and paraganglioma (PPGL). ('paraganglioma', 'Phenotype', 'HP:0002668', (311, 324)) ('mutations', 'Var', (232, 241)) ('Succinate dehydrogenase', 'Gene', (176, 199)) ('SDHB', 'Gene', '6390', (45, 49)) ('SDHD', 'Gene', '6392', (55, 59)) ('hereditary pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (279, 324)) ('Mathematical modeling of disease', 'Disease', 'MESH:D004195', (0, 32)) ('Succinate dehydrogenase', 'Gene', '6390', (176, 199)) ('cause', 'Reg', (270, 275)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (290, 306)) ('paraganglioma', 'Disease', (68, 81)) ('SDHB', 'Gene', (45, 49)) ('Mathematical modeling of disease', 'Disease', (0, 32)) ('paraganglioma', 'Disease', 'MESH:D010235', (68, 81)) ('hereditary tumor', 'Disease', (113, 129)) ('SDHD', 'Gene', (55, 59)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('paraganglioma', 'Disease', (311, 324)) ('SDHD', 'Gene', '6392', (226, 230)) ('SDHB', 'Gene', '6390', (217, 221)) ('paraganglioma', 'Disease', 'MESH:D010235', (311, 324)) ('hereditary tumor', 'Disease', 'MESH:D009386', (113, 129)) ('paraganglioma', 'Phenotype', 'HP:0002668', (68, 81)) ('SDHD', 'Gene', (226, 230)) ('SDHB', 'Gene', (217, 221)) 35356 30106970 Although truncation of the succinate dehydrogenase complex is thought to be the disease causing mechanism in both disorders, SDHB and SDHD patients exihibit different phenotypes. ('truncation', 'Var', (9, 19)) ('SDHB', 'Gene', (125, 129)) ('patients', 'Species', '9606', (139, 147)) ('succinate dehydrogenase', 'Gene', '6390', (27, 50)) ('succinate dehydrogenase', 'Gene', (27, 50)) ('SDHD', 'Gene', (134, 138)) ('SDHD', 'Gene', '6392', (134, 138)) ('SDHB', 'Gene', '6390', (125, 129)) 35369 30106970 described the first PGL syndrome related to deficiency in succinate dehydrogenase (SDH) enzyme activity due to mutations in SDH subunit D (SDHD), part of mitochondrial complex II and the tricarboxylic acid (TCA) cycle. ('PGL syndrome', 'Disease', 'MESH:D010235', (20, 32)) ('SDHD', 'Gene', (139, 143)) ('succinate dehydrogenase', 'Gene', (58, 81)) ('activity', 'MPA', (95, 103)) ('SDH', 'Gene', (83, 86)) ('deficiency', 'Disease', (44, 54)) ('mutations', 'Var', (111, 120)) ('SDH', 'Gene', (139, 142)) ('SDH subunit D', 'Gene', (124, 137)) ('PGL syndrome', 'Disease', (20, 32)) ('TCA', 'Chemical', 'MESH:D014233', (207, 210)) ('SDH', 'Gene', '6390', (124, 127)) ('succinate dehydrogenase', 'Gene', '6390', (58, 81)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (187, 205)) ('SDH subunit D', 'Gene', '6392', (124, 137)) ('SDHD', 'Gene', '6392', (139, 143)) ('related', 'Reg', (33, 40)) ('SDH', 'Gene', '6390', (83, 86)) ('SDH', 'Gene', '6390', (139, 142)) ('SDH', 'Gene', (124, 127)) ('deficiency', 'Disease', 'MESH:D007153', (44, 54)) 35370 30106970 Association between the TCA cycle and PPGL was later confirmed by the identification of mutations in other genes encoding subunits B, C, and A of the SDH complex or its flavination factor (SDHAF2) and more recently, mutations in fumarate hydratase and malate dehydrogenase type 2. ('SDH', 'Gene', (150, 153)) ('SDH', 'Gene', '6390', (189, 192)) ('fumarate hydratase', 'Gene', (229, 247)) ('SDHAF2', 'Gene', (189, 195)) ('SDHAF2', 'Gene', '54949', (189, 195)) ('mutations', 'Var', (88, 97)) ('TCA', 'Chemical', 'MESH:D014233', (24, 27)) ('SDH', 'Gene', (189, 192)) ('SDH', 'Gene', '6390', (150, 153)) ('malate dehydrogenase type 2', 'Enzyme', (252, 279)) ('PPGL', 'Gene', (38, 42)) ('mutations', 'Var', (216, 225)) ('fumarate hydratase', 'Gene', '2271', (229, 247)) 35371 30106970 These genes are related to the TCA cycle and they are considered tumor supressors with biallelic inactivation of the healthy allele through a somatic event in paraganglial cells. ('tumor', 'Disease', (65, 70)) ('biallelic inactivation', 'Var', (87, 109)) ('TCA', 'Disease', (31, 34)) ('TCA', 'Chemical', 'MESH:D014233', (31, 34)) ('tumor', 'Disease', 'MESH:D009369', (65, 70)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) 35374 30106970 Currently, SDHB and SDHD mutations represent the most frequent cause of hereditary PPGLs associated with TCA defects. ('associated', 'Reg', (89, 99)) ('mutations', 'Var', (25, 34)) ('SDHB', 'Gene', (11, 15)) ('PPGLs', 'Disease', (83, 88)) ('SDHB', 'Gene', '6390', (11, 15)) ('SDHD', 'Gene', '6392', (20, 24)) ('TCA defects', 'Disease', (105, 116)) ('TCA', 'Chemical', 'MESH:D014233', (105, 108)) ('SDHD', 'Gene', (20, 24)) ('frequent cause', 'Reg', (54, 68)) 35378 30106970 PGLs with underlying SDHB mutations are associated with a higher risk of aggressive behavior, development of metastatic disease, and ultimately, death. ('aggressive behavior', 'Phenotype', 'HP:0000718', (73, 92)) ('metastatic disease', 'CPA', (109, 127)) ('SDHB', 'Gene', '6390', (21, 25)) ('mutations', 'Var', (26, 35)) ('SDHB', 'Gene', (21, 25)) ('aggressive behavior', 'Disease', 'MESH:D001523', (73, 92)) ('associated', 'Reg', (40, 50)) ('aggressive behavior', 'Disease', (73, 92)) 35382 30106970 SDHD-related mutations (paternally inherited) have very high penetrance (90-100%), in contrast to SDHB ones that have an estimated penetrance of only 20-40%. ('SDHB', 'Gene', '6390', (98, 102)) ('SDHB', 'Gene', (98, 102)) ('SDHD', 'Gene', '6392', (0, 4)) ('mutations', 'Var', (13, 22)) ('SDHD', 'Gene', (0, 4)) 35393 30106970 A first model was parameterized to simulate SDHD disease dynamics with the following set of Pdobsv = [0.00, 0.75, 0.20, 0.05], where the superscript "d" stands for SDHD (i.e, 100% penetrance if the mutation is inherited from the father, 75% HNPGL and 20% sympathetic PPGL, 5% metastatic disease). ('SDHD disease', 'Disease', (44, 56)) ('sympathetic PPGL', 'Disease', (255, 271)) ('SDHD', 'Gene', (44, 48)) ('SDHD', 'Gene', '6392', (44, 48)) ('SDHD', 'Gene', '6392', (164, 168)) ('SDHD disease', 'Disease', 'MESH:D004194', (44, 56)) ('SDHD', 'Gene', (164, 168)) ('mutation', 'Var', (198, 206)) 35403 30106970 Nevertheless, through an integration of current knowledge of PPGL tumorigenesis, we attempted to integrate our findings into two major knolwedges related to SDHB- and SDHD-PPGL tumorigenesis: a genetic background, here the presence of SDHB or SDHD mutations, and embryological development from either sympathetic of parasympathetic paraganglia. ('mutations', 'Var', (248, 257)) ('SDHD', 'Gene', '6392', (167, 171)) ('SDHB', 'Gene', '6390', (157, 161)) ('parasympathetic paraganglia', 'Disease', 'MESH:D001342', (316, 343)) ('SDHB', 'Gene', '6390', (235, 239)) ('tumor', 'Disease', (66, 71)) ('SDHD', 'Gene', (167, 171)) ('SDHB', 'Gene', (157, 161)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) ('tumor', 'Disease', (177, 182)) ('SDHB-', 'Gene', '6390', (157, 162)) ('parasympathetic paraganglia', 'Disease', (316, 343)) ('SDHB', 'Gene', (235, 239)) ('SDHB-', 'Gene', (157, 162)) ('SDHD', 'Gene', '6392', (243, 247)) ('tumor', 'Disease', 'MESH:D009369', (177, 182)) ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('SDHD', 'Gene', (243, 247)) ('tumor', 'Phenotype', 'HP:0002664', (177, 182)) 35404 30106970 Here, genetics stipulates that biallelic inactivation of SDHB or SDHD loci is not enough to cause PPGL. ('cause', 'Reg', (92, 97)) ('biallelic inactivation', 'Var', (31, 53)) ('PPGL', 'Disease', (98, 102)) ('SDHB', 'Gene', '6390', (57, 61)) ('SDHB', 'Gene', (57, 61)) ('SDHD', 'Gene', '6392', (65, 69)) ('SDHD', 'Gene', (65, 69)) 35409 30106970 It is, therefore, possible that chromosome 11p loss is necessary and sufficient to trigger SDHD and SDHAF2 tumorigenesis, whereas SDHB tumors require more complex changes with amplification or deletion of multiple driver genes located on different chromosomes, especially 1p. ('deletion', 'Var', (193, 201)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumor', 'Disease', (107, 112)) ('SDHAF2', 'Gene', (100, 106)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('SDHB tumors', 'Disease', (130, 141)) ('SDHAF2', 'Gene', '54949', (100, 106)) ('tumor', 'Disease', (135, 140)) ('SDHD', 'Gene', (91, 95)) ('loss', 'NegReg', (47, 51)) ('SDHD', 'Gene', '6392', (91, 95)) ('SDHB tumors', 'Disease', 'MESH:D009369', (130, 141)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) ('tumor', 'Disease', 'MESH:D009369', (135, 140)) 35419 30106970 We acknowledge that this theory is still only supported by indirect evidence from genetic data that also fails to explain the absence of somatic biallelic SDH inactivation. ('biallelic', 'Var', (145, 154)) ('SDH', 'Gene', '6390', (155, 158)) ('SDH', 'Gene', (155, 158)) 35456 28867159 Pseudohypoxia group (cluster 1) can be divided into at least two subgroups: tricarboxylic acid (TCA) cycle-related, containing germline mutations in succinate dehydrogenase subunits (SDHx) and fumarate hydratase (FH), a second enzyme in the tricarboxylic acid (TCA) cycle. ('fumarate hydratase', 'Gene', (193, 211)) ('TCA', 'Chemical', 'MESH:D014233', (96, 99)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (241, 259)) ('TCA', 'Chemical', 'MESH:D014233', (261, 264)) ('hypoxia', 'Disease', 'MESH:D000860', (6, 13)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (76, 94)) ('FH', 'Gene', '2271', (213, 215)) ('succinate dehydrogenase', 'Gene', (149, 172)) ('succinate dehydrogenase', 'Gene', '6390', (149, 172)) ('mutations', 'Var', (136, 145)) ('hypoxia', 'Disease', (6, 13)) ('SDHx', 'Chemical', '-', (183, 187)) ('SDHx', 'Gene', (183, 187)) ('fumarate hydratase', 'Gene', '2271', (193, 211)) 35458 28867159 Wnt signaling group includes newly recognized somatic mutations in CSDE1, as well as somatic gene fusions affecting MAML3. ('MAML3', 'Gene', '55534', (116, 121)) ('MAML3', 'Gene', (116, 121)) ('mutations', 'Var', (54, 63)) ('fusions', 'Var', (98, 105)) ('CSDE1', 'Gene', (67, 72)) ('CSDE1', 'Gene', '7812', (67, 72)) 35463 28867159 SDHx mutations also predispose patients to other tumors, particularly gastrointestinal stromal tumors (GISTs), renal cell carcinoma (RCC), and pituitary adenomas. ('pituitary adenomas', 'Phenotype', 'HP:0002893', (143, 161)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('pituitary adenomas', 'Disease', (143, 161)) ('tumors', 'Disease', (49, 55)) ('RCC', 'Disease', 'MESH:C538614', (133, 136)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('tumors', 'Disease', (95, 101)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (111, 131)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (70, 101)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (70, 101)) ('tumors', 'Disease', 'MESH:D009369', (49, 55)) ('tumors', 'Disease', 'MESH:D009369', (95, 101)) ('mutations', 'Var', (5, 14)) ('SDHx', 'Gene', (0, 4)) ('gastrointestinal stromal tumors', 'Disease', (70, 101)) ('renal cell carcinoma', 'Disease', (111, 131)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (111, 131)) ('tumors', 'Phenotype', 'HP:0002664', (49, 55)) ('SDHx', 'Chemical', '-', (0, 4)) ('patients', 'Species', '9606', (31, 39)) ('RCC', 'Disease', (133, 136)) ('carcinoma', 'Phenotype', 'HP:0030731', (122, 131)) ('predispose', 'Reg', (20, 30)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (143, 161)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) 35465 28867159 Patients with SDHB mutations present more frequently with sympathetic (mostly extra-adrenal) PPGLs compared to patients with SDHD mutations who more commonly present with head and neck PGLs (HNPGLs) with concomitant thoracoabdominal PGLs in only about 10% of cases. ('sympathetic', 'Disease', (58, 69)) ('mutations', 'Var', (19, 28)) ('SDHD', 'Gene', '6392', (125, 129)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', '6390', (14, 18)) ('PPGLs', 'Chemical', '-', (93, 98)) ('SDHB', 'Gene', (14, 18)) ('SDHD', 'Gene', (125, 129)) ('patients', 'Species', '9606', (111, 119)) 35466 28867159 Patients with SDHC mutations typically harbor PGLs originating from the parasympathetic cervical or thoracic paraganglia. ('PGLs', 'Protein', (46, 50)) ('SDHC', 'Gene', (14, 18)) ('harbor', 'Reg', (39, 45)) ('mutations', 'Var', (19, 28)) ('SDHC', 'Gene', '6391', (14, 18)) ('Patients', 'Species', '9606', (0, 8)) 35473 28867159 In contrast, PPGLs linked to somatic HIF2A mutations occur sporadically. ('HIF2A', 'Gene', (37, 42)) ('mutations', 'Var', (43, 52)) ('PPGLs', 'Chemical', '-', (13, 18)) ('HIF2A', 'Gene', '2034', (37, 42)) 35474 28867159 Exclusive to females, patients with somatic HIF2A mutations present with polycythemia, multiple PPGLs (sympathetic), and duodenal somatostatinomas. ('HIF2A', 'Gene', '2034', (44, 49)) ('mutations', 'Var', (50, 59)) ('HIF2A', 'Gene', (44, 49)) ('patients', 'Species', '9606', (22, 30)) ('somatostatinomas', 'Disease', 'MESH:D013005', (130, 146)) ('polycythemia', 'Disease', (73, 85)) ('PPGLs', 'Chemical', '-', (96, 101)) ('multiple PPGLs', 'Disease', (87, 101)) ('somatostatinomas', 'Disease', (130, 146)) ('polycythemia', 'Phenotype', 'HP:0001901', (73, 85)) ('polycythemia', 'Disease', 'MESH:D011086', (73, 85)) 35476 28867159 In recent years, other than the aforementioned SDHx mutations, the presence of mutations in other Tricarboxylic Acid (TCA) cycle (also called Krebs cycle) enzymes (Fumarate Hydratase (FH), Malate Dehydrogenase 2 (MDH2), Isocitrate Dehydrogenase 1 and 2 (IDH1/2)) have been identified in various cancers, signifying that these metabolic changes constitute an emerging metabolic hallmark of cancer. ('MDH2', 'Gene', (213, 217)) ('Malate Dehydrogenase 2', 'Gene', (189, 211)) ('SDHx', 'Chemical', '-', (47, 51)) ('cancer', 'Disease', (295, 301)) ('Malate Dehydrogenase 2', 'Gene', '4191', (189, 211)) ('Fumarate Hydratase', 'Gene', '2271', (164, 182)) ('cancer', 'Phenotype', 'HP:0002664', (295, 301)) ('cancer', 'Disease', (389, 395)) ('mutations', 'Var', (79, 88)) ('cancer', 'Phenotype', 'HP:0002664', (389, 395)) ('Fumarate Hydratase', 'Gene', (164, 182)) ('cancers', 'Phenotype', 'HP:0002664', (295, 302)) ('cancers', 'Disease', (295, 302)) ('IDH1/2))', 'Gene', '3417;3418', (254, 262)) ('MDH2', 'Gene', '4191', (213, 217)) ('cancer', 'Disease', 'MESH:D009369', (295, 301)) ('FH', 'Gene', '2271', (184, 186)) ('Tricarboxylic Acid', 'Chemical', 'MESH:D014233', (98, 116)) ('IDH1/2)', 'Gene', (254, 261)) ('Krebs', 'Chemical', '-', (142, 147)) ('TCA', 'Chemical', 'MESH:D014233', (118, 121)) ('cancer', 'Disease', 'MESH:D009369', (389, 395)) ('identified', 'Reg', (273, 283)) ('cancers', 'Disease', 'MESH:D009369', (295, 302)) 35477 28867159 Importantly, disruption of the TCA cycle is associated with accumulation of its intermediates that alter various cellular and extra-cellular functions. ('TCA cycle', 'Gene', (31, 40)) ('disruption', 'Var', (13, 23)) ('alter', 'Reg', (99, 104)) ('TCA', 'Chemical', 'MESH:D014233', (31, 34)) ('accumulation', 'PosReg', (60, 72)) 35481 28867159 DNA hypermethylation also silences key genes involved in neuroendocrine differentiation (such as Phenylethanolamine N-Methyltransferase (PNMT)), leading to a noradrenergic secretory profile. ('silences', 'NegReg', (26, 34)) ('leading to', 'Reg', (145, 155)) ('PNMT', 'Gene', (137, 141)) ('Phenylethanolamine N-Methyltransferase', 'Gene', (97, 135)) ('noradrenergic secretory profile', 'MPA', (158, 189)) ('PNMT', 'Gene', '5409', (137, 141)) ('Phenylethanolamine N-Methyltransferase', 'Gene', '5409', (97, 135)) ('hypermethylation', 'Var', (4, 20)) 35493 28867159 The accumulation of succinate observed in SDHx-mutated PPGL inhibits PHDs. ('accumulation', 'PosReg', (4, 16)) ('SDHx', 'Chemical', '-', (42, 46)) ('PHD', 'Disease', 'MESH:D011547', (69, 72)) ('SDHx-mutated', 'Var', (42, 54)) ('PHD', 'Disease', (69, 72)) ('inhibits', 'NegReg', (60, 68)) ('PPGL', 'Gene', (55, 59)) ('succinate', 'Chemical', 'MESH:D019802', (20, 29)) 35494 28867159 Thus, PHD inhibition by succinate or VHL/HIF2A mutations creates a pseudohypoxic state resulting in upregulation of HIF target genes (Box 1). ('VHL', 'Gene', (37, 40)) ('HIF2A', 'Gene', '2034', (41, 46)) ('VHL', 'Gene', '7428', (37, 40)) ('mutations', 'Var', (47, 56)) ('PHD', 'Disease', 'MESH:D011547', (6, 9)) ('PHD', 'Disease', (6, 9)) ('pseudohypoxic state', 'MPA', (67, 86)) ('upregulation', 'PosReg', (100, 112)) ('succinate', 'Chemical', 'MESH:D019802', (24, 33)) ('HIF2A', 'Gene', (41, 46)) 35496 28867159 The importance of the HIF signaling pathway in angiogenesis and tumorigenesis is also demonstrated by the association between PPGLs and mutations in the key proteins of the oxygen sensing pathway (i.e., VHL, EPAS1/HIF2A, FH, PHD1/EGLN2, PHD2/EGLN1) and MDH2). ('EGLN1', 'Gene', (242, 247)) ('PHD1', 'Gene', (225, 229)) ('FH', 'Gene', '2271', (221, 223)) ('mutations', 'Var', (136, 145)) ('oxygen', 'Chemical', 'MESH:D010100', (173, 179)) ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) ('PHD2', 'Gene', (237, 241)) ('PHD1', 'Gene', '112398', (225, 229)) ('PPGLs', 'Gene', (126, 131)) ('VHL', 'Gene', (203, 206)) ('PHD2', 'Gene', '54583', (237, 241)) ('MDH2', 'Gene', '4191', (253, 257)) ('EPAS1', 'Gene', (208, 213)) ('PPGLs', 'Chemical', '-', (126, 131)) ('angiogenesis', 'CPA', (47, 59)) ('EGLN2', 'Gene', '112398', (230, 235)) ('HIF2A', 'Gene', '2034', (214, 219)) ('VHL', 'Gene', '7428', (203, 206)) ('EGLN2', 'Gene', (230, 235)) ('tumor', 'Disease', (64, 69)) ('association', 'Interaction', (106, 117)) ('HIF2A', 'Gene', (214, 219)) ('EGLN1', 'Gene', '54583', (242, 247)) ('tumor', 'Disease', 'MESH:D009369', (64, 69)) ('EPAS1', 'Gene', '2034', (208, 213)) ('MDH2', 'Gene', (253, 257)) 35500 28867159 Most of these tumors carry somatic VHL inactivation (in >90% of cases); however, they often fail to concentrate 18F-FDG. ('18F-FDG', 'Chemical', 'MESH:D019788', (112, 119)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) ('tumors', 'Disease', (14, 20)) ('tumors', 'Phenotype', 'HP:0002664', (14, 20)) ('VHL', 'Gene', (35, 38)) ('tumors', 'Disease', 'MESH:D009369', (14, 20)) ('inactivation', 'Var', (39, 51)) ('fail to concentrate', 'Phenotype', 'HP:0031987', (92, 111)) ('VHL', 'Gene', '7428', (35, 38)) 35502 28867159 Fluxomic studies that determine the rates of metabolic reactions show that pharmocological inhibition of SDH or SDH knockdown alone does not impair cellular respiration because it is still sustained in redox equivalents by glutaminolysis and succinate secretion flux. ('succinate secretion flux', 'MPA', (242, 266)) ('SDH', 'Gene', (105, 108)) ('glutaminolysis', 'MPA', (223, 237)) ('SDH', 'Gene', (112, 115)) ('succinate', 'Chemical', 'MESH:D019802', (242, 251)) ('knockdown', 'Var', (116, 125)) ('SDH', 'Gene', '6390', (105, 108)) ('cellular', 'MPA', (148, 156)) ('SDH', 'Gene', '6390', (112, 115)) ('redox equivalents', 'MPA', (202, 219)) 35503 28867159 Beyond succinate accumulation, it has been shown that SDH knockout cells rely on increased pyruvate carboxylase (PC)-dependent aspartate production and reductive glutamine metabolism. ('glutamine', 'Chemical', 'MESH:D005973', (162, 171)) ('increased pyruvate', 'Phenotype', 'HP:0003542', (81, 99)) ('increased pyruvate carboxylase', 'Phenotype', 'HP:0003209', (81, 111)) ('reductive glutamine metabolism', 'MPA', (152, 182)) ('aspartate', 'Chemical', 'MESH:D001224', (127, 136)) ('SDH', 'Gene', '6390', (54, 57)) ('pyruvate carboxylase', 'Gene', '5091', (91, 111)) ('increased', 'PosReg', (81, 90)) ('knockout', 'Var', (58, 66)) ('succinate', 'Chemical', 'MESH:D019802', (7, 16)) ('pyruvate carboxylase', 'Gene', (91, 111)) ('SDH', 'Gene', (54, 57)) 35512 28867159 Therefore, it was hypothesized that succinate could be the connecting hub between SDHx mutation status and 18F-FDG uptake. ('SDHx', 'Chemical', '-', (82, 86)) ('SDHx', 'Gene', (82, 86)) ('succinate', 'Chemical', 'MESH:D019802', (36, 45)) ('mutation', 'Var', (87, 95)) ('18F-FDG', 'Chemical', 'MESH:D019788', (107, 114)) 35513 28867159 This effect would be mediated by a succinate efflux for SDHx mutated cells. ('succinate', 'Chemical', 'MESH:D019802', (35, 44)) ('succinate efflux', 'MPA', (35, 51)) ('mutated', 'Var', (61, 68)) ('SDHx', 'Gene', (56, 60)) ('mediated by', 'Reg', (21, 32)) ('SDHx', 'Chemical', '-', (56, 60)) 35514 28867159 Analyses of compartmentalized levels of TCA cycle metabolites have revealed that yeast with sdhDelta mutations may aberrantly efflux succinate from the mitochondria to the cytosol. ('efflux succinate from the mitochondria', 'MPA', (126, 164)) ('mutations', 'Var', (101, 110)) ('yeast', 'Species', '4932', (81, 86)) ('succinate', 'Chemical', 'MESH:D019802', (133, 142)) ('sdhDelta', 'Gene', (92, 100)) ('aberrantly', 'MPA', (115, 125)) ('TCA', 'Chemical', 'MESH:D014233', (40, 43)) 35515 28867159 Other studies have even reported that succinate could be excreted into the medium during cultivation of yeast sdhDelta mutants. ('yeast sdhDelta', 'Gene', (104, 118)) ('succinate', 'MPA', (38, 47)) ('succinate', 'Chemical', 'MESH:D019802', (38, 47)) ('mutants', 'Var', (119, 126)) ('yeast', 'Species', '4932', (104, 109)) 35528 28867159 Unlike 123I-MIBG/11C-HED/18F-FDA which enter the cells via norepinephrine transporter, 18F-FDOPA is taken up via neutral amino acid transporter system L (Figure 1). ('18F-FDA', 'Chemical', '-', (25, 32)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (87, 96)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (7, 16)) ('11C-HED', 'Chemical', '-', (17, 24)) ('norepinephrine transporter', 'Gene', (59, 85)) ('18F-FDOPA', 'Var', (87, 96)) ('norepinephrine transporter', 'Gene', '6530', (59, 85)) ('neutral amino acid transporter system', 'MPA', (113, 150)) 35545 28867159 Surprisingly, metastatic PPGLs associated with SDHB mutations, which are more aggressive than their sporadic counterparts, exhibit intense uptake of 68Ga-labeled-SSAs. ('mutations', 'Var', (52, 61)) ('uptake of 68Ga-labeled-SSAs', 'MPA', (139, 166)) ('metastatic', 'CPA', (14, 24)) ('SDHB', 'Gene', '6390', (47, 51)) ('SDHB', 'Gene', (47, 51)) ('PPGLs', 'Chemical', '-', (25, 30)) 35548 28867159 EPAS1 mutations remain an exception among susceptibility genes since they lead to PPGLs that concentrate less 68Ga-labeled-SSA in contrast to SDHx-related PPGLs. ('EPAS1', 'Gene', '2034', (0, 5)) ('68Ga-labeled-SSA', 'MPA', (110, 126)) ('PPGLs', 'Chemical', '-', (82, 87)) ('lead to', 'Reg', (74, 81)) ('EPAS1', 'Gene', (0, 5)) ('less', 'NegReg', (105, 109)) ('SDHx', 'Chemical', '-', (142, 146)) ('PPGLs', 'Chemical', '-', (155, 160)) ('mutations', 'Var', (6, 15)) 35550 28867159 For detecting multifocality or metastases, both SDHx and non-SDHx PPGLs, are better visualized by 68Ga-DOTA-SSA than 18F-FDOPA PET/CT or even 18F-FDG PET/CT. ('18F-FDOPA', 'Chemical', 'MESH:C043437', (117, 126)) ('metastases', 'Disease', 'MESH:D009362', (31, 41)) ('SDHx', 'Chemical', '-', (61, 65)) ('SDHx PPGLs', 'Chemical', '-', (61, 71)) ('68Ga-DOTA-SSA', 'Chemical', '-', (98, 111)) ('18F-FDG', 'Chemical', 'MESH:D019788', (142, 149)) ('SDHx', 'Chemical', '-', (48, 52)) ('68Ga-DOTA-SSA', 'Var', (98, 111)) ('metastases', 'Disease', (31, 41)) 35557 28867159 Interestingly, a recent study has shown that succinate has pro-angiogenic functions (chemotactic motility, tube-like structure formation and proliferation) and also upregulates vascular endothelial growth factor expression. ('succinate', 'Chemical', 'MESH:D019802', (45, 54)) ('vascular endothelial growth factor', 'Gene', (177, 211)) ('vascular endothelial growth factor', 'Gene', '7422', (177, 211)) ('tube-like structure formation', 'CPA', (107, 136)) ('succinate', 'Var', (45, 54)) ('pro-angiogenic functions', 'CPA', (59, 83)) ('upregulates', 'PosReg', (165, 176)) 35568 28867159 Stabilization of HIF-alpha subunits is related to deregulation of the ubiquitin/proteasome system (SDHx, von Hippel-Lindau-VHL, or Endothelial PAS Domain Protein 1-EPAS-1 (also called Hypoxia-Inducible Factor 2 Alpha-HIF2A) mutations. ('Endothelial PAS Domain Protein 1', 'Gene', (131, 163)) ('EPAS-1', 'Gene', (164, 170)) ('HIF2A', 'Gene', '2034', (217, 222)) ('deregulation', 'MPA', (50, 62)) ('VHL', 'Gene', (123, 126)) ('SDHx', 'Chemical', '-', (99, 103)) ('VHL', 'Gene', '7428', (123, 126)) ('EPAS-1', 'Gene', '2034', (164, 170)) ('mutations', 'Var', (224, 233)) ('HIF2A', 'Gene', (217, 222)) ('Endothelial PAS Domain Protein 1', 'Gene', '2034', (131, 163)) 35580 28867159 described the first PGL syndrome (PGL1) related to a SDH deficiency, due to a mutation in the SDHD. ('PGL syndrome', 'Disease', 'MESH:D010235', (20, 32)) ('SDHD', 'Gene', (94, 98)) ('mutation', 'Var', (78, 86)) ('related', 'Reg', (40, 47)) ('SDH deficiency', 'Disease', (53, 67)) ('SDH deficiency', 'Disease', 'MESH:D007153', (53, 67)) ('PGL syndrome', 'Disease', (20, 32)) ('SDHD', 'Gene', '6392', (94, 98)) 35581 28867159 Later, several familial clusters of PPGLs related to deleterious mutations in any of SDHx were described and defined as PGL syndromes PGL1 through PGL4. ('PPGLs', 'Chemical', '-', (36, 41)) ('SDHx', 'Gene', (85, 89)) ('SDHx', 'Chemical', '-', (85, 89)) ('PGL4', 'Gene', (147, 151)) ('PGL4', 'Gene', '6390', (147, 151)) ('PGL syndrome', 'Disease', (120, 132)) ('related', 'Reg', (42, 49)) ('PPGLs', 'Disease', (36, 41)) ('PGL syndrome', 'Disease', 'MESH:D010235', (120, 132)) ('mutations', 'Var', (65, 74)) 35584 28867159 Succinate leads to a set of distinct features that enhance tumor growth and survival via HIF proteins stabilization with increased expression of HIF-target genes (angiogenesis), hypermethylation profile that is viewed as a contributing factor to both tumor aggressiveness (epithelial to mesenchymal transition) and loss of chromaffin-specific patterns of gene expression. ('tumor aggressiveness', 'Disease', (251, 271)) ('tumor', 'Disease', (251, 256)) ('tumor', 'Disease', (59, 64)) ('increased', 'PosReg', (121, 130)) ('enhance', 'PosReg', (51, 58)) ('Succinate', 'Chemical', 'MESH:D019802', (0, 9)) ('aggressiveness', 'Phenotype', 'HP:0000718', (257, 271)) ('HIF proteins', 'Protein', (89, 101)) ('expression', 'MPA', (131, 141)) ('hypermethylation profile', 'Var', (178, 202)) ('chromaffin', 'Chemical', '-', (323, 333)) ('tumor aggressiveness', 'Disease', 'MESH:D001523', (251, 271)) ('tumor', 'Disease', 'MESH:D009369', (251, 256)) ('tumor', 'Disease', 'MESH:D009369', (59, 64)) ('survival', 'CPA', (76, 84)) ('stabilization', 'NegReg', (102, 115)) ('tumor', 'Phenotype', 'HP:0002664', (251, 256)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) 35655 26943426 Zero to 15 % show identifiable somatic CKIT or platelet-derived growth factor receptor-alpha (PDGFRA) mutations in GIST. ('GIST', 'Gene', (115, 119)) ('CKIT', 'Gene', '3815', (39, 43)) ('PDGFRA', 'Gene', '5156', (94, 100)) ('PDGFRA', 'Gene', (94, 100)) ('platelet-derived growth factor receptor-alpha', 'Gene', (47, 92)) ('CKIT', 'Gene', (39, 43)) ('mutations', 'Var', (102, 111)) ('GIST', 'Phenotype', 'HP:0100723', (115, 119)) ('platelet-derived growth factor receptor-alpha', 'Gene', '5156', (47, 92)) 35673 25298897 In children less than 18 years of age approximately 60% of pheochromocytomas and paragangliomas are associated with a germline mutation. ('children', 'Species', '9606', (3, 11)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (59, 76)) ('paraganglioma', 'Phenotype', 'HP:0002668', (81, 94)) ('germline mutation', 'Var', (118, 135)) ('pheochromocytomas', 'Disease', (59, 76)) ('associated', 'Reg', (100, 110)) ('paragangliomas', 'Disease', 'MESH:D010235', (81, 95)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (59, 76)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (59, 75)) ('paragangliomas', 'Disease', (81, 95)) ('paragangliomas', 'Phenotype', 'HP:0002668', (81, 95)) 35674 25298897 We present an 11-year-old child with an abdominal paraganglioma related to a succinate dehydrogenase subunit B gene mutation whose father had a previously resected abdominal paraganglioma and was found to carry the same mutation. ('abdominal paraganglioma', 'Disease', (164, 187)) ('paraganglioma', 'Phenotype', 'HP:0002668', (174, 187)) ('mutation', 'Var', (116, 124)) ('related', 'Reg', (64, 71)) ('child', 'Species', '9606', (26, 31)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (40, 63)) ('abdominal paraganglioma', 'Disease', (40, 63)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (164, 187)) ('paraganglioma', 'Phenotype', 'HP:0002668', (50, 63)) 35680 25298897 It has been reported that over half of all PCC and PGL in patients <18 years old are associated with a germline mutation and that this percentage seems to increase with decreasing age at diagnosis. ('patients', 'Species', '9606', (58, 66)) ('PCC', 'Disease', (43, 46)) ('PCC', 'Phenotype', 'HP:0002666', (43, 46)) ('PGL', 'Phenotype', 'HP:0002668', (51, 54)) ('germline mutation', 'Var', (103, 120)) ('PGL', 'Disease', (51, 54)) ('associated', 'Reg', (85, 95)) 35695 25298897 Despite gradual increases in alpha- and beta-blockade with phenoxybenzamine, atenolol, and propranolol, he ultimately required an esmolol infusion to maintain the heart rate less than 100 beats per minute. ('atenolol', 'Chemical', 'MESH:D001262', (77, 85)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (59, 75)) ('esmolol', 'Chemical', 'MESH:C036604', (130, 137)) ('propranolol', 'Chemical', 'MESH:D011433', (91, 102)) ('phenoxybenzamine', 'Var', (59, 75)) ('increases', 'PosReg', (16, 25)) ('heart rate', 'MPA', (163, 173)) 35701 25298897 After discharge, a serum genetic panel returned positive for a heterozygous deleterious mutation in the succinate dehydrogenase complex subunit B (SDHB) gene. ('mutation', 'Var', (88, 96)) ('succinate dehydrogenase complex subunit B', 'Gene', (104, 145)) ('succinate dehydrogenase complex subunit B', 'Gene', '6390', (104, 145)) ('positive', 'Reg', (48, 56)) ('SDHB', 'Gene', '6390', (147, 151)) ('SDHB', 'Gene', (147, 151)) 35730 25298897 Although some cases of pediatric PCC/PGL are sporadic, it has been reported that 59% of those occurring in children <18 years old and up to 70% of those occurring in children <10 years old are associated with a germline mutation. ('PGL', 'Phenotype', 'HP:0002668', (37, 40)) ('germline mutation', 'Var', (211, 228)) ('children', 'Species', '9606', (107, 115)) ('children', 'Species', '9606', (166, 174)) ('PCC', 'Phenotype', 'HP:0002666', (33, 36)) ('associated', 'Reg', (193, 203)) 35736 25298897 While SDH subunit gene mutations have been shown to be associated with neoplasia and cause susceptibility to familial PCC/PGL syndromes, an exact causal mechanism is still unclear. ('PCC', 'Phenotype', 'HP:0002666', (118, 121)) ('neoplasia', 'Disease', (71, 80)) ('SDH', 'Gene', (6, 9)) ('PGL', 'Phenotype', 'HP:0002668', (122, 125)) ('associated', 'Reg', (55, 65)) ('familial PCC', 'Disease', 'MESH:C565384', (109, 121)) ('familial PCC', 'Disease', (109, 121)) ('mutations', 'Var', (23, 32)) ('neoplasia', 'Phenotype', 'HP:0002664', (71, 80)) ('neoplasia', 'Disease', 'MESH:D009369', (71, 80)) ('susceptibility', 'Reg', (91, 105)) ('SDH', 'Gene', '6390', (6, 9)) 35737 25298897 Hereditary PCC/PGL syndromes have an autosomal dominant mode of inheritance, and approximately 40% of patients with SDHB mutations may go on to develop malignant disease. ('PGL', 'Phenotype', 'HP:0002668', (15, 18)) ('Hereditary PCC/PGL syndromes', 'Disease', (0, 28)) ('mutations', 'Var', (121, 130)) ('develop', 'PosReg', (144, 151)) ('SDHB', 'Gene', '6390', (116, 120)) ('patients', 'Species', '9606', (102, 110)) ('SDHB', 'Gene', (116, 120)) ('malignant disease', 'Disease', 'MESH:D009369', (152, 169)) ('PCC', 'Phenotype', 'HP:0002666', (11, 14)) ('malignant disease', 'Disease', (152, 169)) 35738 25298897 Overall SDHB mutations are associated with a higher malignancy rate than mutations in the SDHD or SDHC genes and in fact account for 50% or more of malignant PCC and PGL. ('PGL', 'Disease', (166, 169)) ('SDHD', 'Gene', (90, 94)) ('SDHD', 'Gene', '6392', (90, 94)) ('malignant PCC', 'Disease', (148, 161)) ('SDHB', 'Gene', '6390', (8, 12)) ('malignancy', 'Disease', 'MESH:D009369', (52, 62)) ('SDHC', 'Gene', '6391', (98, 102)) ('malignancy', 'Disease', (52, 62)) ('SDHB', 'Gene', (8, 12)) ('PCC', 'Phenotype', 'HP:0002666', (158, 161)) ('PGL', 'Phenotype', 'HP:0002668', (166, 169)) ('mutations', 'Var', (13, 22)) ('SDHC', 'Gene', (98, 102)) 35739 25298897 SDHB mutations usually correlate with disease in the thorax, abdomen, or pelvis while SDHD mutations often manifest as head or neck tumors that are typically benign. ('disease', 'Disease', (38, 45)) ('SDHD', 'Gene', (86, 90)) ('manifest', 'Reg', (107, 115)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('neck tumors', 'Disease', (127, 138)) ('mutations', 'Var', (5, 14)) ('neck tumors', 'Disease', 'MESH:D006258', (127, 138)) ('tumors', 'Phenotype', 'HP:0002664', (132, 138)) ('SDHB', 'Gene', '6390', (0, 4)) ('head or neck tumors', 'Phenotype', 'HP:0012288', (119, 138)) ('SDHB', 'Gene', (0, 4)) ('SDHD', 'Gene', '6392', (86, 90)) 35741 25298897 Routine genetic counseling and testing are recommended, however, after the diagnosis of PGL in a child regardless of family history particularly since certain mutations can indicate multisite disease or higher probability of malignancy. ('child', 'Species', '9606', (97, 102)) ('PGL', 'Phenotype', 'HP:0002668', (88, 91)) ('indicate', 'Reg', (173, 181)) ('mutations', 'Var', (159, 168)) ('PGL', 'Disease', (88, 91)) ('malignancy', 'Disease', 'MESH:D009369', (225, 235)) ('malignancy', 'Disease', (225, 235)) ('multisite disease', 'Disease', (182, 199)) 35774 25057243 SDHD and SDHB mutations are very important for head and neck paragangliomas. ('SDHB', 'Gene', '6390', (9, 13)) ('paraganglioma', 'Phenotype', 'HP:0002668', (61, 74)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (56, 75)) ('SDHB', 'Gene', (9, 13)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (47, 75)) ('SDHD', 'Gene', '6392', (0, 4)) ('SDHD', 'Gene', (0, 4)) ('neck paragangliomas', 'Disease', (56, 75)) ('mutations', 'Var', (14, 23)) ('paragangliomas', 'Phenotype', 'HP:0002668', (61, 75)) 35776 25057243 Although many familial cases that are often associated with the abovementioned germline mutations go unrecognized, germline mutations have been reported in 7.5%-24% of patients with pheochromocytomas or paragangliomas, and with their sporadic presentation. ('reported', 'Reg', (144, 152)) ('paragangliomas', 'Disease', 'MESH:D010235', (203, 217)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (182, 199)) ('pheochromocytomas', 'Disease', (182, 199)) ('paragangliomas', 'Disease', (203, 217)) ('paragangliomas', 'Phenotype', 'HP:0002668', (203, 217)) ('paraganglioma', 'Phenotype', 'HP:0002668', (203, 216)) ('patients', 'Species', '9606', (168, 176)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (182, 199)) ('germline', 'Var', (115, 123)) 35786 25057243 There is founded some malignant histologic criteria that necrosis, perineural invasion (Figure 3), increased mitotic activity, atypical mitotic figures in pathologic specimen. ('mitotic activity', 'CPA', (109, 125)) ('atypical', 'Var', (127, 135)) ('perineural invasion', 'CPA', (67, 86)) ('increased', 'PosReg', (99, 108)) ('necrosis', 'Disease', (57, 65)) ('necrosis', 'Disease', 'MESH:D009336', (57, 65)) 35789 25057243 Immunohiystochemical studies did not reveal any SDHD or SDHB mutations. ('SDHB', 'Gene', '6390', (56, 60)) ('SDHB', 'Gene', (56, 60)) ('mutations', 'Var', (61, 70)) ('SDHD', 'Gene', '6392', (48, 52)) ('SDHD', 'Gene', (48, 52)) 35905 26523625 Seventy-three (55%) patients had SDHB mutations; 59 (45%) patients had apparently sporadic tumors (AST). ('tumors', 'Disease', (91, 97)) ('tumors', 'Disease', 'MESH:D009369', (91, 97)) ('tumors', 'Phenotype', 'HP:0002664', (91, 97)) ('SDHB', 'Gene', '6390', (33, 37)) ('SDHB', 'Gene', (33, 37)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('patients', 'Species', '9606', (20, 28)) ('patients', 'Species', '9606', (58, 66)) ('mutations', 'Var', (38, 47)) 35914 26523625 In children, metastatic PHEOs/PGLs are mainly due to SDHB mutations; in adults they are equally distributed between in SDHB mutations and AST, with better 5- and 10-year survival rates for ASTs. ('mutations', 'Var', (58, 67)) ('children', 'Species', '9606', (3, 11)) ('mutations', 'Var', (124, 133)) ('due', 'Reg', (46, 49)) ('SDHB', 'Gene', '6390', (53, 57)) ('SDHB', 'Gene', '6390', (119, 123)) ('metastatic PHEOs/PGLs', 'Disease', (13, 34)) ('PHEOs', 'Chemical', '-', (24, 29)) ('SDHB', 'Gene', (53, 57)) ('SDHB', 'Gene', (119, 123)) 35920 26523625 Currently, about 35 to 40% of PHEOs/PGLs occur in the context of several major inherited tumor syndromes, mainly including multiple endocrine neoplasia type 2 (MEN2, with rearranged during transfection (RET) mutations), von Hippel-Lindau (VHL) disease (caused by mutations in VHL), neurofibromatosis type 1 (NF1, with NF1 mutations), and mutations in succinate dehydrogenase subunits (SDHx). ('VHL', 'Gene', (276, 279)) ('NF1', 'Gene', (318, 321)) ('mutations', 'Var', (263, 272)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (132, 151)) ('VHL', 'Gene', '7428', (239, 242)) ('NF1', 'Gene', '4763', (308, 311)) ('RET', 'Gene', (203, 206)) ('SDHx', 'Gene', (385, 389)) ('PHEOs', 'Chemical', '-', (30, 35)) ('inherited tumor syndrome', 'Disease', (79, 103)) ('NF1', 'Gene', (308, 311)) ('VHL', 'Gene', '7428', (276, 279)) ('inherited tumor syndrome', 'Disease', 'None', (79, 103)) ('endocrine neoplasia', 'Disease', (132, 151)) ('neurofibromatosis type 1', 'Gene', (282, 306)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (282, 299)) ('neoplasia', 'Phenotype', 'HP:0002664', (142, 151)) ('mutations', 'Var', (322, 331)) ('RET', 'Gene', '5979', (203, 206)) ('endocrine neoplasia', 'Disease', 'MESH:D009377', (132, 151)) ('von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (220, 251)) ('mutations', 'Var', (338, 347)) ('VHL', 'Gene', (239, 242)) ('NF1', 'Gene', '4763', (318, 321)) ('neurofibromatosis type 1', 'Gene', '4763', (282, 306)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) 35922 26523625 Newly discovered mutations in transmembrane protein 127 (TMEM127) and myc-associated factor X (MAX) genes are also associated with PHEO/PGL, currently without a specific syndromic presentation. ('myc-associated factor X', 'Gene', (70, 93)) ('transmembrane protein 127', 'Gene', '55654', (30, 55)) ('PHEO/PGL', 'Disease', (131, 139)) ('myc-associated factor X', 'Gene', '4149', (70, 93)) ('associated', 'Reg', (115, 125)) ('TMEM127', 'Gene', (57, 64)) ('MAX', 'Gene', '4149', (95, 98)) ('MAX', 'Gene', (95, 98)) ('TMEM127', 'Gene', '55654', (57, 64)) ('mutations', 'Var', (17, 26)) ('transmembrane protein 127', 'Gene', (30, 55)) 35923 26523625 Most recently, somatic gain-of-function mutations in the gene encoding hypoxia-inducible factor 2alpha (HIF2A) have been discovered, mainly in patients presenting with a new syndrome of multiple PGLs and duodenal somatostatinomas associated with polycythemia in females. ('hypoxia-inducible factor 2alpha', 'Gene', (71, 102)) ('HIF2A', 'Gene', (104, 109)) ('polycythemia', 'Phenotype', 'HP:0001901', (246, 258)) ('polycythemia', 'Disease', 'MESH:D011086', (246, 258)) ('gain-of-function', 'PosReg', (23, 39)) ('hypoxia-inducible factor 2alpha', 'Gene', '2034', (71, 102)) ('HIF2A', 'Gene', '2034', (104, 109)) ('mutations', 'Var', (40, 49)) ('patients', 'Species', '9606', (143, 151)) ('polycythemia', 'Disease', (246, 258)) ('duodenal somatostatinomas', 'Disease', (204, 229)) ('duodenal somatostatinomas', 'Disease', 'MESH:D013005', (204, 229)) ('multiple PGLs', 'Disease', (186, 199)) 35924 26523625 Five pathogenic germline mutations in the FH gene encoding fumarate hydratase were identified. ('fumarate hydratase', 'Gene', (59, 77)) ('mutations', 'Var', (25, 34)) ('pathogenic', 'Reg', (5, 15)) ('fumarate hydratase', 'Gene', '2271', (59, 77)) 35928 26523625 SDHB mutations are associated with more aggressive tumor behavior and a higher rate of malignancy than other PHEO/PGL types, in some studies with rates up to 50 to 90%. ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('malignancy', 'Disease', 'MESH:D009369', (87, 97)) ('mutations', 'Var', (5, 14)) ('malignancy', 'Disease', (87, 97)) ('SDHB', 'Gene', '6390', (0, 4)) ('aggressive tumor', 'Disease', 'MESH:D001523', (40, 56)) ('SDHB', 'Gene', (0, 4)) ('aggressive tumor', 'Disease', (40, 56)) 35929 26523625 Mutations in the MAX and FH genes were also found to be associated with a higher rate of metastatic PHEO/PGL. ('MAX', 'Gene', '4149', (17, 20)) ('MAX', 'Gene', (17, 20)) ('associated', 'Reg', (56, 66)) ('metastatic PHEO/PGL', 'Disease', (89, 108)) ('Mutations', 'Var', (0, 9)) 35930 26523625 In addition to the presence of SDHB mutations, several other independent factors exist that seem to be closely associated with metastatic behavior of primary tumors, including their location (extra-adrenal), size (mainly over 5-6 cm), the presence of high levels of methoxytyramine, and likely some histopathological criteria (e.g., necrosis, a high mitotic rate). ('tumors', 'Disease', (158, 164)) ('tumors', 'Phenotype', 'HP:0002664', (158, 164)) ('SDHB', 'Gene', (31, 35)) ('tumors', 'Disease', 'MESH:D009369', (158, 164)) ('tumor', 'Phenotype', 'HP:0002664', (158, 163)) ('associated', 'Reg', (111, 121)) ('mutations', 'Var', (36, 45)) ('necrosis', 'Disease', 'MESH:D009336', (333, 341)) ('methoxytyramine', 'MPA', (266, 281)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (266, 281)) ('SDHB', 'Gene', '6390', (31, 35)) ('metastatic behavior', 'CPA', (127, 146)) ('necrosis', 'Disease', (333, 341)) 35939 26523625 Genetic testing for mutations in major PHEO/PGL susceptibility genes (SDHB, SDHC, SDHD, VHL, RET, MAX, and TMEM127) was performed at either the NIH, Mayo Medical Laboratories (Rochester, MN), the Division of Molecular Diagnostics at the University of Pittsburgh Medical Center, or the Department of Genetics of the Children's Hospital of Philadelphia. ('SDHB', 'Gene', '6390', (70, 74)) ('Children', 'Species', '9606', (315, 323)) ('SDHB', 'Gene', (70, 74)) ('TMEM127', 'Gene', (107, 114)) ('VHL', 'Gene', (88, 91)) ('RET', 'Gene', '5979', (93, 96)) ('PHEO/PGL', 'Gene', (39, 47)) ('TMEM127', 'Gene', '55654', (107, 114)) ('SDHD', 'Gene', (82, 86)) ('VHL', 'Gene', '7428', (88, 91)) ('SDHC', 'Gene', (76, 80)) ('SDHD', 'Gene', '6392', (82, 86)) ('Mayo', 'Species', '162683', (149, 153)) ('SDHC', 'Gene', '6391', (76, 80)) ('RET', 'Gene', (93, 96)) ('MAX', 'Gene', '4149', (98, 101)) ('mutations', 'Var', (20, 29)) ('MAX', 'Gene', (98, 101)) 35964 26523625 Overall, 73 (55%) patients had mutations in SDHB, and 59 (45%) patients presented with apparently sporadic tumors (AST), no mutations in SDHC, SDHD, RET, or VHL were included. ('mutations', 'Var', (31, 40)) ('RET', 'Gene', '5979', (149, 152)) ('SDHB', 'Gene', '6390', (44, 48)) ('SDHC', 'Gene', '6391', (137, 141)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumors', 'Disease', (107, 113)) ('tumors', 'Phenotype', 'HP:0002664', (107, 113)) ('SDHD', 'Gene', (143, 147)) ('SDHB', 'Gene', (44, 48)) ('VHL', 'Gene', (157, 160)) ('presented', 'Reg', (72, 81)) ('tumors', 'Disease', 'MESH:D009369', (107, 113)) ('SDHD', 'Gene', '6392', (143, 147)) ('VHL', 'Gene', '7428', (157, 160)) ('patients', 'Species', '9606', (18, 26)) ('patients', 'Species', '9606', (63, 71)) ('RET', 'Gene', (149, 152)) ('SDHC', 'Gene', (137, 141)) 35965 26523625 In children, 22 (81%) had mutations in SDHB (90% were PGLs); in adults, 51 (49%) had mutations in SDHB (80% were PGLs). ('children', 'Species', '9606', (3, 11)) ('SDHB', 'Gene', '6390', (39, 43)) ('SDHB', 'Gene', '6390', (98, 102)) ('SDHB', 'Gene', (39, 43)) ('mutations', 'Var', (26, 35)) ('mutations', 'Var', (85, 94)) ('SDHB', 'Gene', (98, 102)) 35981 26523625 In patients with SDHB mutations, 15% and 35% of primary tumors were smaller than 4.5 or 6 cm, respectively; 74% and 54% were equal to or larger than 4.5 or 6 cm, respectively; and 11% were of an unknown size. ('smaller', 'NegReg', (68, 75)) ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('SDHB', 'Gene', '6390', (17, 21)) ('tumors', 'Disease', (56, 62)) ('tumors', 'Disease', 'MESH:D009369', (56, 62)) ('tumors', 'Phenotype', 'HP:0002664', (56, 62)) ('patients', 'Species', '9606', (3, 11)) ('mutations', 'Var', (22, 31)) ('SDHB', 'Gene', (17, 21)) 35986 26523625 In patients with SDHB mutations, metastases were most often found in the bones (78%), lungs and mediastinum (45%), lymph nodes (36%), and liver (35%); only 1 patient had metastases detected only in lymph nodes. ('metastases', 'Disease', (33, 43)) ('patient', 'Species', '9606', (158, 165)) ('patient', 'Species', '9606', (3, 10)) ('SDHB', 'Gene', '6390', (17, 21)) ('metastases', 'Disease', (170, 180)) ('found', 'Reg', (60, 65)) ('metastases', 'Disease', 'MESH:D009362', (33, 43)) ('patients', 'Species', '9606', (3, 11)) ('mutations', 'Var', (22, 31)) ('metastases', 'Disease', 'MESH:D009362', (170, 180)) ('SDHB', 'Gene', (17, 21)) 35993 26523625 In patients with SDHB mutations, 46 (73%) of patients with extraadrenal PGLs had noradrenergic) phenotype; 16 (35%) of these patients also had elevated DA. ('noradrenergic) phenotype', 'MPA', (81, 105)) ('SDHB', 'Gene', '6390', (17, 21)) ('elevated', 'PosReg', (143, 151)) ('patients', 'Species', '9606', (3, 11)) ('patients', 'Species', '9606', (45, 53)) ('mutations', 'Var', (22, 31)) ('SDHB', 'Gene', (17, 21)) ('DA', 'Chemical', 'MESH:D004298', (152, 154)) ('patients', 'Species', '9606', (125, 133)) 35999 26523625 In 73 patients with SDHB mutations, 41 (65%) of the 63 PGLs were noradrenergic; 12 (29%) of these SDHB patients also had elevated DA. ('DA', 'Chemical', 'MESH:D004298', (130, 132)) ('mutations', 'Var', (25, 34)) ('SDHB', 'Gene', '6390', (98, 102)) ('SDHB', 'Gene', (98, 102)) ('SDHB', 'Gene', '6390', (20, 24)) ('patients', 'Species', '9606', (6, 14)) ('patients', 'Species', '9606', (103, 111)) ('SDHB', 'Gene', (20, 24)) 36035 26523625 Twenty-nine of these patients had SDHB mutations; 10 were AST patients. ('mutations', 'Var', (39, 48)) ('patients', 'Species', '9606', (21, 29)) ('SDHB', 'Gene', '6390', (34, 38)) ('SDHB', 'Gene', (34, 38)) ('patients', 'Species', '9606', (62, 70)) 36036 26523625 There was a statistically significant difference in survival between patients with SDHB mutations and those with AST (P = .006, Fig. ('SDHB', 'Gene', (83, 87)) ('survival', 'MPA', (52, 60)) ('mutations', 'Var', (88, 97)) ('significant difference', 'Reg', (26, 48)) ('patients', 'Species', '9606', (69, 77)) ('SDHB', 'Gene', '6390', (83, 87)) 36037 26523625 Kaplan-Meier estimates of 5- and 10-year survival rates were 91.8% (95% confidence interval [CI]: 82.696.2%) and 75.5% (95% CI: 63.5-84.1%) in the SDHB mutation group and 94.8% (95% CI: 84.8-98.3%) and 86.3% (95% CI: 73.1-93.3%) in the group of patients with AST, respectively. ('SDHB', 'Gene', '6390', (147, 151)) ('mutation', 'Var', (152, 160)) ('SDHB', 'Gene', (147, 151)) ('patients', 'Species', '9606', (245, 253)) 36046 26523625 First, we did not find any major differences in the frequency of SDHB versus AST adult patients with metastatic disease, suggesting that other genetic and epigenetic factors besides SDHB mutations play an important role in the pathogenesis of metastatic PHEO/PGL. ('SDHB', 'Gene', (182, 186)) ('mutations', 'Var', (187, 196)) ('metastatic PHEO/PGL', 'Disease', (243, 262)) ('SDHB', 'Gene', '6390', (65, 69)) ('SDHB', 'Gene', '6390', (182, 186)) ('patients', 'Species', '9606', (87, 95)) ('SDHB', 'Gene', (65, 69)) 36047 26523625 In contrast, in children, there were five times more patients with SDHB mutations than with AST. ('mutations', 'Var', (72, 81)) ('patients', 'Species', '9606', (53, 61)) ('SDHB', 'Gene', '6390', (67, 71)) ('SDHB', 'Gene', (67, 71)) ('children', 'Species', '9606', (16, 24)) 36048 26523625 Second, we found that adult patients with SDHB mutations had statistically worse survival than those without them. ('SDHB', 'Gene', '6390', (42, 46)) ('mutations', 'Var', (47, 56)) ('survival', 'MPA', (81, 89)) ('patients', 'Species', '9606', (28, 36)) ('worse', 'NegReg', (75, 80)) ('SDHB', 'Gene', (42, 46)) 36053 26523625 These include: SDHB gene mutation, older age at initial diagnosis, location of primary lesions, tumor size/weight, and a noradrenergic and/or dopaminergic biochemical phenotype. ('SDHB', 'Gene', '6390', (15, 19)) ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('noradrenergic and/or', 'MPA', (121, 141)) ('dopamine', 'Chemical', 'MESH:D004298', (142, 150)) ('mutation', 'Var', (25, 33)) ('SDHB', 'Gene', (15, 19)) ('tumor', 'Disease', (96, 101)) ('tumor', 'Disease', 'MESH:D009369', (96, 101)) 36054 26523625 Currently, SDHB mutations, although associated with a low penetrance, are considered one of the most important risk factors for developing metastatic PHEO/PGL with a poor prognosis, including in children. ('SDHB', 'Gene', (11, 15)) ('metastatic PHEO/PGL', 'Disease', (139, 158)) ('developing', 'PosReg', (128, 138)) ('mutations', 'Var', (16, 25)) ('SDHB', 'Gene', '6390', (11, 15)) ('children', 'Species', '9606', (195, 203)) 36055 26523625 In a paper by Amar et al, it was found that patients with PHEOs/PGLs with SDHB mutations have a high relative risk (71.4%) of developing metastatic tumors, which was later confirmed by several other investigators. ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('patients', 'Species', '9606', (44, 52)) ('SDHB', 'Gene', '6390', (74, 78)) ('SDHB', 'Gene', (74, 78)) ('PHEOs', 'Chemical', '-', (58, 63)) ('tumors', 'Disease', (148, 154)) ('tumors', 'Disease', 'MESH:D009369', (148, 154)) ('tumors', 'Phenotype', 'HP:0002664', (148, 154)) ('developing', 'PosReg', (126, 136)) ('mutations', 'Var', (79, 88)) 36056 26523625 Furthermore, Brouwers et al found that SDHB mutations are responsible for about 50% of all metastases originating from primary extra-adrenal abdominal PGLs. ('SDHB', 'Gene', '6390', (39, 43)) ('metastases', 'Disease', (91, 101)) ('SDHB', 'Gene', (39, 43)) ('mutations', 'Var', (44, 53)) ('responsible', 'Reg', (58, 69)) ('metastases', 'Disease', 'MESH:D009362', (91, 101)) 36058 26523625 In the present study, in adult patients, we did not find a more frequent association between the presence of SDHB-related metastatic PHEO/PGL versus AST (Table 3). ('SDHB', 'Gene', '6390', (109, 113)) ('presence', 'Var', (97, 105)) ('SDHB', 'Gene', (109, 113)) ('patients', 'Species', '9606', (31, 39)) ('metastatic PHEO/PGL', 'Disease', (122, 141)) 36060 26523625 Thus, we believe that the present results on this large population of patients with metastatic PHEO/PGL suggest that there are additional important factors besides SDHB mutations, including other genetic and epigenetic mechanisms, that play a crucial role in the development of metastases, at least in adults. ('patients', 'Species', '9606', (70, 78)) ('metastases', 'Disease', 'MESH:D009362', (278, 288)) ('mutations', 'Var', (169, 178)) ('SDHB', 'Gene', '6390', (164, 168)) ('metastases', 'Disease', (278, 288)) ('SDHB', 'Gene', (164, 168)) 36061 26523625 Other than the presence of SDHB mutations, the size and location of the primary tumor were also found to play an important and most likely independent role in the devolopment of metastases in the present study, as described below. ('metastases', 'Disease', 'MESH:D009362', (178, 188)) ('tumor', 'Disease', 'MESH:D009369', (80, 85)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('tumor', 'Disease', (80, 85)) ('SDHB', 'Gene', '6390', (27, 31)) ('mutations', 'Var', (32, 41)) ('metastases', 'Disease', (178, 188)) ('SDHB', 'Gene', (27, 31)) 36066 26523625 Furthermore, the primary tumor size of both PHEOs and PGLs was also found to be larger in patients with SDHB PHEO/PGL than in patients with AST. ('larger', 'PosReg', (80, 86)) ('PHEOs', 'Chemical', '-', (44, 49)) ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('tumor', 'Disease', (25, 30)) ('SDHB', 'Gene', '6390', (104, 108)) ('patients', 'Species', '9606', (126, 134)) ('PHEO/PGL', 'Var', (109, 117)) ('patients', 'Species', '9606', (90, 98)) ('tumor', 'Disease', 'MESH:D009369', (25, 30)) ('SDHB', 'Gene', (104, 108)) 36096 26523625 In children, 81% had mutations in SDHB (90% PGLs); in adults, only 49% had mutations in SDHB (80% PGLs). ('children', 'Species', '9606', (3, 11)) ('SDHB', 'Gene', '6390', (88, 92)) ('SDHB', 'Gene', (88, 92)) ('SDHB', 'Gene', '6390', (34, 38)) ('SDHB', 'Gene', (34, 38)) ('mutations', 'Var', (21, 30)) 36099 26523625 This supports the establishment of certain recommendations for practicing oncologists and other physicians: carefully examine patients who present with PHEO/PGL in childhood, including testing all of them for SDHB mutations and following them for many years due to the late development of metastases; increase the follow-up frequency for patients with tumor sizes over 4.5 cm and consider performing whole-body imaging, especially in SDHB patients since one-fifth of patients present with metastatic disease at the initial diagnosis, mainly in bones; increase follow-up frequency in older patients; assure patients that with appropriate follow-up and treatment the 10-year survival rates are currently 75% or 86% for SDHB and AST types, respectively; and follow-up visits should preferably be done in a collaborative oncology-endocrinology combined practice. ('metastases', 'Disease', 'MESH:D009362', (289, 299)) ('patients', 'Species', '9606', (126, 134)) ('patients', 'Species', '9606', (467, 475)) ('patients', 'Species', '9606', (338, 346)) ('SDHB', 'Gene', '6390', (434, 438)) ('metastases', 'Disease', (289, 299)) ('mutations', 'Var', (214, 223)) ('tumor', 'Disease', (352, 357)) ('patients', 'Species', '9606', (606, 614)) ('tumor', 'Disease', 'MESH:D009369', (352, 357)) ('oncology', 'Phenotype', 'HP:0002664', (817, 825)) ('SDHB', 'Gene', (434, 438)) ('SDHB', 'Gene', '6390', (717, 721)) ('patients', 'Species', '9606', (439, 447)) ('SDHB', 'Gene', '6390', (209, 213)) ('child', 'Species', '9606', (164, 169)) ('late development', 'Phenotype', 'HP:0001263', (269, 285)) ('metastatic disease', 'Disease', (489, 507)) ('patients', 'Species', '9606', (589, 597)) ('tumor', 'Phenotype', 'HP:0002664', (352, 357)) ('SDHB', 'Gene', (717, 721)) ('SDHB', 'Gene', (209, 213)) 36117 31672301 Recently documented germline mutations characteristic of familial pheochromocytoma/paraganglioma syndromes have increased the percentage of heritable lesions to more than 30%. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (66, 82)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('germline mutations', 'Var', (20, 38)) ('increased', 'PosReg', (112, 121)) ('familial pheochromocytoma/paraganglioma syndromes', 'Disease', (57, 106)) ('familial pheochromocytoma/paraganglioma syndromes', 'Disease', 'MESH:C531777', (57, 106)) 36125 31672301 Watery diarrhea, hypokalemia, and achlorhydria syndrome caused by vasoactive intestinal peptide production, and polycythemia arising from erythropoietin (EPO) oversecretion or oversensitivity of EPO receptors, can also occur. ('EPO', 'Gene', '2056', (154, 157)) ('achlorhydria syndrome', 'Disease', 'MESH:D000126', (34, 55)) ('hypokalemia', 'Disease', (17, 28)) ('EPO', 'Gene', '2056', (195, 198)) ('diarrhea', 'Disease', (7, 15)) ('EPO', 'Gene', (154, 157)) ('EPO', 'Gene', (195, 198)) ('achlorhydria syndrome', 'Disease', (34, 55)) ('polycythemia', 'Phenotype', 'HP:0001901', (112, 124)) ('oversensitivity', 'Var', (176, 191)) ('diarrhea', 'Disease', 'MESH:D003967', (7, 15)) ('hypokalemia', 'Phenotype', 'HP:0002900', (17, 28)) ('erythropoietin', 'Gene', (138, 152)) ('vasoactive intestinal peptide production', 'MPA', (66, 106)) ('erythropoietin', 'Gene', '2056', (138, 152)) ('achlorhydria', 'Phenotype', 'HP:0032448', (34, 46)) ('hypokalemia', 'Disease', 'MESH:D007008', (17, 28)) ('polycythemia', 'Disease', (112, 124)) ('oversecretion', 'Var', (159, 172)) ('diarrhea', 'Phenotype', 'HP:0002014', (7, 15)) ('polycythemia', 'Disease', 'MESH:D011086', (112, 124)) 36164 31672301 The remaining features of vascular invasion, capsular invasion, profound nuclear pleomorphism, and nuclear hyperchromasia score 1 point each. ('hyperchromasia', 'Disease', 'None', (107, 121)) ('profound nuclear', 'Var', (64, 80)) ('vascular invasion', 'CPA', (26, 43)) ('hyperchromasia', 'Disease', (107, 121)) ('capsular invasion', 'CPA', (45, 62)) 36176 31672301 Although most PPGLs arise sporadically, germline mutations in known susceptibility genes are identified in up to 24% of sporadic-appearing PPGL cases. ('PPGLs', 'Disease', (14, 19)) ('PPGL', 'Chemical', '-', (139, 143)) ('germline mutations', 'Var', (40, 58)) ('PPGLs', 'Chemical', '-', (14, 19)) ('PPGL', 'Chemical', '-', (14, 18)) ('PPGL', 'Disease', (139, 143)) 36178 31672301 NF1 mutations, the most commonly mutated gene, are present in more than 25% of sporadic PPGLs, followed by VHL (9%) and RET (5%). ('VHL', 'Gene', '7428', (107, 110)) ('PPGLs', 'Chemical', '-', (88, 93)) ('NF1', 'Gene', '4763', (0, 3)) ('RET', 'Gene', (120, 123)) ('PPGLs', 'Disease', (88, 93)) ('RET', 'Gene', '5979', (120, 123)) ('NF1', 'Gene', (0, 3)) ('mutations', 'Var', (4, 13)) ('VHL', 'Gene', (107, 110)) 36179 31672301 In addition, some tumors harbor gain-of-function EPAS1 mutations. ('gain-of-function', 'PosReg', (32, 48)) ('mutations', 'Var', (55, 64)) ('tumors', 'Disease', (18, 24)) ('EPAS1', 'Gene', '2034', (49, 54)) ('tumors', 'Disease', 'MESH:D009369', (18, 24)) ('tumors', 'Phenotype', 'HP:0002664', (18, 24)) ('EPAS1', 'Gene', (49, 54)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 36181 31672301 The first cluster is associated with pseudohypoxic signaling and is subdivided into 2 subgroups: tricarboxylic acid (TCA) cycle-related mutations, involving germline mutations in all 5 of the succinate dehydrogenase (SDH) subunits (SDHA, SDHB, SDHC, SDHD, and SDHAF2) and fumarate hydratase (FH), also an enzyme in the TCA cycle; and VHL/EPAS1-related mutations. ('SDH', 'Gene', (250, 253)) ('SDHB', 'Gene', '6390', (238, 242)) ('SDH', 'Gene', '6390', (217, 220)) ('SDHC', 'Gene', (244, 248)) ('SDH', 'Gene', '6390', (238, 241)) ('FH', 'Gene', '2271', (292, 294)) ('mutations', 'Var', (352, 361)) ('SDHD', 'Gene', (250, 254)) ('mutations', 'Var', (136, 145)) ('EPAS1', 'Gene', (338, 343)) ('SDHA', 'Gene', (232, 236)) ('SDH', 'Gene', (232, 235)) ('TCA', 'Chemical', 'MESH:D014233', (319, 322)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (97, 115)) ('mutations', 'Var', (166, 175)) ('succinate dehydrogenase', 'Gene', (192, 215)) ('SDHB', 'Gene', (238, 242)) ('SDH', 'Gene', (217, 220)) ('SDHA', 'Gene', '6389', (232, 236)) ('SDH', 'Gene', '6390', (260, 263)) ('fumarate hydratase', 'Gene', (272, 290)) ('SDH', 'Gene', (238, 241)) ('SDH', 'Gene', '6390', (244, 247)) ('associated', 'Reg', (21, 31)) ('SDH', 'Gene', '6390', (250, 253)) ('EPAS1', 'Gene', '2034', (338, 343)) ('SDHC', 'Gene', '6391', (244, 248)) ('VHL', 'Gene', (334, 337)) ('SDHAF2', 'Gene', '54949', (260, 266)) ('SDHAF2', 'Gene', (260, 266)) ('SDH', 'Gene', (260, 263)) ('succinate dehydrogenase', 'Gene', '6390', (192, 215)) ('SDHA', 'Gene', (260, 264)) ('SDHD', 'Gene', '6392', (250, 254)) ('fumarate hydratase', 'Gene', '2271', (272, 290)) ('SDH', 'Gene', '6390', (232, 235)) ('SDH', 'Gene', (244, 247)) ('TCA', 'Chemical', 'MESH:D014233', (117, 120)) ('SDHA', 'Gene', '6389', (260, 264)) ('VHL', 'Gene', '7428', (334, 337)) 36183 31672301 The second group is characterized by Wnt signaling and includes newly recognized CSDE1 somatic mutations as well as MAML3 somatic gene fusion events. ('MAML3', 'Gene', '55534', (116, 121)) ('MAML3', 'Gene', (116, 121)) ('mutations', 'Var', (95, 104)) ('CSDE1', 'Gene', (81, 86)) ('CSDE1', 'Gene', '7812', (81, 86)) 36185 31672301 The last group consists of abnormalities of tyrosine kinase signaling pathways and encompass germline or somatic mutations in RET, NF1, TMEM127, MAX, and HRAS genes. ('NF1', 'Gene', (131, 134)) ('HRAS', 'Gene', (154, 158)) ('NF1', 'Gene', '4763', (131, 134)) ('TMEM127', 'Gene', (136, 143)) ('RET', 'Gene', (126, 129)) ('mutations', 'Var', (113, 122)) ('tyrosine kinase signaling pathways', 'Pathway', (44, 78)) ('TMEM127', 'Gene', '55654', (136, 143)) ('RET', 'Gene', '5979', (126, 129)) ('HRAS', 'Gene', '3265', (154, 158)) ('abnormalities', 'Var', (27, 40)) 36188 31672301 It was formerly thought that 10% of pheochromocytomas were associated with familial syndromes; however, it is now known that up to 24% of sporadic-appearing PPGLs harbor germline mutations. ('pheochromocytomas', 'Disease', (36, 53)) ('familial syndromes', 'Disease', (75, 93)) ('PPGLs', 'Chemical', '-', (157, 162)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (36, 52)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (36, 53)) ('associated', 'Reg', (59, 69)) ('PPGLs', 'Disease', (157, 162)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (36, 53)) ('germline mutations', 'Var', (170, 188)) 36190 31672301 Hereditary PPGLs are often associated with the emergence of other neoplasms. ('PPGLs', 'Disease', (11, 16)) ('neoplasms', 'Disease', 'MESH:D009369', (66, 75)) ('associated', 'Reg', (27, 37)) ('neoplasms', 'Disease', (66, 75)) ('neoplasm', 'Phenotype', 'HP:0002664', (66, 74)) ('PPGLs', 'Chemical', '-', (11, 16)) ('Hereditary', 'Var', (0, 10)) ('neoplasms', 'Phenotype', 'HP:0002664', (66, 75)) 36197 31672301 Ninety percent of mutations with MEN2A develop medullary thyroid carcinoma, 50% develop pheochromocytomas, and 20% to 30% have hyperparathyroidism secondary to parathyroid hyperplasia. ('carcinoma', 'Phenotype', 'HP:0030731', (65, 74)) ('parathyroid hyperplasia', 'Phenotype', 'HP:0008208', (160, 183)) ('develop', 'Reg', (80, 87)) ('develop', 'Reg', (39, 46)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (88, 105)) ('hyperparathyroidism', 'Disease', (127, 146)) ('parathyroid hyperplasia', 'Disease', 'MESH:D006965', (160, 183)) ('hyperparathyroidism secondary', 'Phenotype', 'HP:0000867', (127, 156)) ('hyperparathyroidism', 'Disease', 'MESH:D006961', (127, 146)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (57, 74)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (47, 74)) ('MEN2A', 'Gene', (33, 38)) ('thyroid carcinoma', 'Disease', (57, 74)) ('MEN2A', 'Gene', '5979', (33, 38)) ('parathyroid hyperplasia', 'Disease', (160, 183)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (127, 146)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (57, 74)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (88, 104)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (88, 105)) ('pheochromocytomas', 'Disease', (88, 105)) ('mutations', 'Var', (18, 27)) 36201 31672301 VHL syndrome is a rare genetic disorder caused by germline mutations in the VHL tumor suppressor gene located on chromosome 3p25.3. ('VHL syndrome', 'Disease', 'MESH:D006623', (0, 12)) ('genetic disorder', 'Disease', (23, 39)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('germline mutations', 'Var', (50, 68)) ('VHL tumor', 'Disease', 'MESH:D006623', (76, 85)) ('caused by', 'Reg', (40, 49)) ('genetic disorder', 'Disease', 'MESH:D030342', (23, 39)) ('VHL syndrome', 'Disease', (0, 12)) ('VHL tumor', 'Disease', (76, 85)) 36205 31672301 As consequence, more than 90% of gene-carrying patients manifest 1 or more of the clinical sequelae of the syndrome by age 65 years and up to 30% develop PPGL at a mean patient age of 30 years. ('patient', 'Species', '9606', (47, 54)) ('gene-carrying', 'Var', (33, 46)) ('patients', 'Species', '9606', (47, 55)) ('PPGL', 'Chemical', '-', (154, 158)) ('PPGL', 'Gene', (154, 158)) ('develop', 'Reg', (146, 153)) ('patient', 'Species', '9606', (169, 176)) 36210 31672301 In less than 10% of cases, sporadic PPGL may also present with VHL germline mutation without being part of a hereditary syndrome. ('germline mutation', 'Var', (67, 84)) ('PPGL', 'Chemical', '-', (36, 40)) ('hereditary syndrome', 'Disease', 'MESH:D061325', (109, 128)) ('VHL', 'Gene', (63, 66)) ('hereditary syndrome', 'Disease', (109, 128)) ('PPGL', 'Disease', (36, 40)) ('present', 'Reg', (50, 57)) ('VHL', 'Gene', '7428', (63, 66)) 36212 31672301 NF1 is an autosomal dominant syndrome caused by mutations in the NF1 gene on chromosome 17q11.2. ('autosomal dominant syndrome', 'Disease', (10, 37)) ('caused by', 'Reg', (38, 47)) ('NF1', 'Gene', '4763', (65, 68)) ('NF1', 'Gene', (0, 3)) ('NF1', 'Gene', (65, 68)) ('NF1', 'Gene', '4763', (0, 3)) ('mutations', 'Var', (48, 57)) ('autosomal dominant syndrome', 'Disease', 'MESH:D030342', (10, 37)) 36217 31672301 Familial pheochromocytoma/paraganglioma syndromes are a group of inherited genetic disorders caused by mutations of the succinate dehydrogenase (SDH) gene complex. ('caused by', 'Reg', (93, 102)) ('paraganglioma', 'Phenotype', 'HP:0002668', (26, 39)) ('mutations', 'Var', (103, 112)) ('succinate dehydrogenase', 'Gene', (120, 143)) ('SDH', 'Gene', '6390', (145, 148)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (9, 25)) ('Familial pheochromocytoma/paraganglioma syndromes', 'Disease', (0, 49)) ('Familial pheochromocytoma/paraganglioma syndromes', 'Disease', 'MESH:C531777', (0, 49)) ('genetic disorders', 'Disease', (75, 92)) ('SDH', 'Gene', (145, 148)) ('genetic disorders', 'Disease', 'MESH:D030342', (75, 92)) ('succinate dehydrogenase', 'Gene', '6390', (120, 143)) 36218 31672301 Germline mutations in SDH genes are responsible for approximately 10% of sporadic PPGLs, 30% of pediatric cases, and more than 80% of familial collections of PPGLs. ('Germline mutations', 'Var', (0, 18)) ('responsible', 'Reg', (36, 47)) ('PPGLs', 'Chemical', '-', (82, 87)) ('PPGLs', 'Chemical', '-', (158, 163)) ('SDH', 'Gene', '6390', (22, 25)) ('PPGLs', 'Disease', (82, 87)) ('SDH', 'Gene', (22, 25)) 36221 31672301 Among these, the major PGL syndromes are caused by mutations of the SDHB (PGL4), SDHD (PGL1) and SDHC (PGL3) subunits. ('mutations', 'Var', (51, 60)) ('PGL4', 'Gene', (74, 78)) ('SDHB', 'Gene', '6390', (68, 72)) ('PGL4', 'Gene', '6390', (74, 78)) ('SDHD', 'Gene', '6392', (81, 85)) ('SDHC', 'Gene', (97, 101)) ('SDHC', 'Gene', '6391', (97, 101)) ('PGL3', 'Gene', '6391', (103, 107)) ('SDHB', 'Gene', (68, 72)) ('PGL syndromes', 'Disease', (23, 36)) ('SDHD', 'Gene', (81, 85)) ('PGL3', 'Gene', (103, 107)) ('caused by', 'Reg', (41, 50)) 36225 31672301 The risk of malignancy varies significantly based on the mutated SDH subunit. ('SDH', 'Gene', '6390', (65, 68)) ('SDH', 'Gene', (65, 68)) ('malignancy', 'Disease', 'MESH:D009369', (12, 22)) ('malignancy', 'Disease', (12, 22)) ('mutated', 'Var', (57, 64)) 36226 31672301 In PGL4-related tumors, mutation in SDHB is associated with the worst prognosis because at least 30% of these neoplasms metastasize or show extensive multifocality (Fig. ('neoplasms', 'Phenotype', 'HP:0002664', (110, 119)) ('SDHB', 'Gene', '6390', (36, 40)) ('tumors', 'Phenotype', 'HP:0002664', (16, 22)) ('SDHB', 'Gene', (36, 40)) ('tumor', 'Phenotype', 'HP:0002664', (16, 21)) ('neoplasm', 'Phenotype', 'HP:0002664', (110, 118)) ('tumors', 'Disease', 'MESH:D009369', (16, 22)) ('mutation', 'Var', (24, 32)) ('PGL4', 'Gene', '6390', (3, 7)) ('PGL4', 'Gene', (3, 7)) ('tumors', 'Disease', (16, 22)) ('neoplasms metastasize', 'Disease', 'MESH:D009362', (110, 131)) ('neoplasms metastasize', 'Disease', (110, 131)) 36228 31672301 Among them, catecholamine hypersecretion, histologic parameters, SDHB mutation, methylation patterns, infiltrative growth, incomplete resection, and metastatic disease all contribute to increased morbidity and mortality. ('catecholamine hypersecretion', 'MPA', (12, 40)) ('mortality', 'Disease', (210, 219)) ('methylation', 'MPA', (80, 91)) ('increased', 'PosReg', (186, 195)) ('mortality', 'Disease', 'MESH:D003643', (210, 219)) ('SDHB', 'Gene', '6390', (65, 69)) ('catecholamine', 'Chemical', 'MESH:D002395', (12, 25)) ('mutation', 'Var', (70, 78)) ('metastatic disease', 'CPA', (149, 167)) ('SDHB', 'Gene', (65, 69)) 36229 31672301 The presence of metastases worsens the prognosis by decreasing the overall 5-year survival rate to less than 60%. ('presence', 'Var', (4, 12)) ('decreasing', 'NegReg', (52, 62)) ('metastases', 'Disease', 'MESH:D009362', (16, 26)) ('metastases', 'Disease', (16, 26)) 36241 32511227 MYO5B mutations in pheochromocytoma/paraganglioma promote cancer progression Identification of additional cancer-associated genes and secondary mutations driving the metastatic progression in pheochromocytoma and paraganglioma (PPGL) is important for subtyping, and may provide optimization of therapeutic regimens. ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (19, 49)) ('cancer', 'Phenotype', 'HP:0002664', (58, 64)) ('promote', 'PosReg', (50, 57)) ('MYO5B', 'Gene', (0, 5)) ('paraganglioma', 'Phenotype', 'HP:0002668', (213, 226)) ('PPGL', 'Chemical', '-', (228, 232)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (19, 35)) ('cancer', 'Disease', 'MESH:D009369', (106, 112)) ('cancer', 'Disease', 'MESH:D009369', (58, 64)) ('cancer', 'Disease', (106, 112)) ('MYO5B', 'Gene', '4645', (0, 5)) ('pheochromocytoma/paraganglioma', 'Disease', (19, 49)) ('paraganglioma', 'Phenotype', 'HP:0002668', (36, 49)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (192, 226)) ('cancer', 'Disease', (58, 64)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (192, 208)) ('mutations', 'Var', (6, 15)) ('cancer', 'Phenotype', 'HP:0002664', (106, 112)) 36242 32511227 We recently reported novel recurrent nonsynonymous mutations in the MYO5B gene in metastatic PPGL. ('MYO5B', 'Gene', (68, 73)) ('metastatic PPGL', 'Disease', (82, 97)) ('nonsynonymous mutations', 'Var', (37, 60)) ('PPGL', 'Chemical', '-', (93, 97)) 36243 32511227 Here, we explored the functional impact of these MYO5B mutations, and analyzed MYO5B expression in primary PPGL tumor cases in relation to mutation status. ('mutations', 'Var', (55, 64)) ('PPGL tumor', 'Disease', 'MESH:D009369', (107, 117)) ('MYO5B', 'Gene', (49, 54)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('PPGL tumor', 'Disease', (107, 117)) 36245 32511227 In addition, subcellular localization of MYO5B protein was altered from cytoplasmic to membranous in some metastatic tumors, and the strongest and most abnormal expression pattern was observed in a paraganglioma harboring a somatic MYO5B:p.G1611S mutation. ('paraganglioma', 'Disease', (198, 211)) ('protein', 'Protein', (47, 54)) ('altered', 'Reg', (59, 66)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('MYO5B:p.G1611S', 'Var', (232, 246)) ('tumors', 'Phenotype', 'HP:0002664', (117, 123)) ('paraganglioma', 'Disease', 'MESH:D010235', (198, 211)) ('tumors', 'Disease', (117, 123)) ('MYO5B', 'Gene', (41, 46)) ('tumors', 'Disease', 'MESH:D009369', (117, 123)) ('MYO5B:p.G1611S', 'SUBSTITUTION', 'None', (232, 246)) ('paraganglioma', 'Phenotype', 'HP:0002668', (198, 211)) ('subcellular localization', 'MPA', (13, 37)) 36246 32511227 In addition to five previously discovered MYO5B mutations, the present study of 30 PPGL (8 previous and 22 new samples) also revealed two, and hence recurrent, mutations in the gene paralog MYO5A. ('MYO5A', 'Gene', '4644', (190, 195)) ('mutations', 'Var', (160, 169)) ('MYO5B', 'Gene', (42, 47)) ('PPGL', 'Chemical', '-', (83, 87)) ('MYO5A', 'Gene', (190, 195)) ('mutations', 'Var', (48, 57)) 36247 32511227 The three MYO5B missense mutations with the highest prediction scores (p.L587P, p.G1611S and p.R1641C) were selected and functionally validated using site directed mutagenesis and stable transfection into human neuroblastoma cells (SK-N-AS) and embryonic kidney cells (HEK293). ('neuroblastoma', 'Disease', 'MESH:D009447', (211, 224)) ('p.L587P', 'Mutation', 'rs750054708', (71, 78)) ('embryonic kidney', 'Disease', 'MESH:D007674', (245, 261)) ('p.R1641C', 'Var', (93, 101)) ('neuroblastoma', 'Disease', (211, 224)) ('MYO5B', 'Gene', (10, 15)) ('p.G1611S', 'Var', (80, 88)) ('p.L587P', 'Var', (71, 78)) ('p.G1611S', 'Mutation', 'rs748242455', (80, 88)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (211, 224)) ('embryonic kidney', 'Disease', (245, 261)) ('HEK293', 'CellLine', 'CVCL:0045', (269, 275)) ('SK-N-AS', 'Chemical', '-', (232, 239)) ('human', 'Species', '9606', (205, 210)) ('p.R1641C', 'Mutation', 'rs780999931', (93, 101)) 36248 32511227 In vitro analysis showed a significant increased proliferation rate in all three MYO5B mutated clones. ('rat', 'Species', '10116', (56, 59)) ('mutated', 'Var', (87, 94)) ('proliferation rate', 'CPA', (49, 67)) ('increased', 'PosReg', (39, 48)) ('rat', 'Species', '10116', (63, 66)) ('MYO5B', 'Gene', (81, 86)) 36249 32511227 The two somatically derived mutations, p.L587P and p.G1611S, were also found to increase the migration rate. ('rat', 'Species', '10116', (103, 106)) ('migration rate', 'CPA', (93, 107)) ('p.G1611S', 'Var', (51, 59)) ('p.L587P', 'Mutation', 'rs750054708', (39, 46)) ('increase', 'PosReg', (80, 88)) ('p.G1611S', 'Mutation', 'rs748242455', (51, 59)) ('p.L587P', 'Var', (39, 46)) ('rat', 'Species', '10116', (96, 99)) 36250 32511227 Expression analysis of MYO5B mutants compared to wild type clones, demonstrated a significant enrichment of genes involved in migration, proliferation, cell adhesion, glucose metabolism, and cellular homeostasis. ('migration', 'CPA', (126, 135)) ('glucose metabolism', 'Disease', (167, 185)) ('rat', 'Species', '10116', (129, 132)) ('rat', 'Species', '10116', (144, 147)) ('rat', 'Species', '10116', (74, 77)) ('mutants', 'Var', (29, 36)) ('glucose metabolism', 'Disease', 'MESH:D044882', (167, 185)) ('MYO5B', 'Gene', (23, 28)) ('proliferation', 'CPA', (137, 150)) 36251 32511227 Our study validates the functional role of novel MYO5B mutations in proliferation and migration, and suggest the MYO5-pathway to be involved in the malignant progression in some PPGL tumors. ('proliferation', 'CPA', (68, 81)) ('MYO5', 'Gene', '4644', (49, 53)) ('migration', 'CPA', (86, 95)) ('mutations', 'Var', (55, 64)) ('rat', 'Species', '10116', (75, 78)) ('MYO5', 'Gene', (49, 53)) ('tumor', 'Phenotype', 'HP:0002664', (183, 188)) ('rat', 'Species', '10116', (89, 92)) ('tumors', 'Phenotype', 'HP:0002664', (183, 189)) ('MYO5', 'Gene', (113, 117)) ('MYO5', 'Gene', '4644', (113, 117)) ('involved', 'Reg', (132, 140)) ('PPGL tumors', 'Disease', (178, 189)) ('PPGL tumors', 'Disease', 'MESH:D009369', (178, 189)) 36254 32511227 We have recently discovered novel missense mutations in the non-conventional myosin 5 gene (MYO5B), an endosomal transport protein, which we now show enhances progression and migration in PPGLs. ('myosin', 'Gene', '79784', (77, 83)) ('missense mutations', 'Var', (34, 52)) ('enhances', 'PosReg', (150, 158)) ('PPGLs', 'Chemical', '-', (188, 193)) ('rat', 'Species', '10116', (178, 181)) ('MYO5B', 'Gene', (92, 97)) ('myosin', 'Gene', (77, 83)) 36255 32511227 MYO5B mutations were preferentially found in patients with metastatic disease and SDH deficiency (germline SDHB-mutations). ('MYO5B', 'Gene', (0, 5)) ('SDHB', 'Gene', (107, 111)) ('found', 'Reg', (36, 41)) ('metastatic disease and SDH deficiency', 'Disease', 'MESH:C538445', (59, 96)) ('patients', 'Species', '9606', (45, 53)) ('SDHB', 'Gene', '6390', (107, 111)) ('mutations', 'Var', (6, 15)) 36257 32511227 Since the MYO5B mutations were found to drive progression through downstream up-regulation of glucose metabolism genes, e.g. ('MYO5B', 'Gene', (10, 15)) ('mutations', 'Var', (16, 25)) ('glucose metabolism', 'Disease', 'MESH:D044882', (94, 112)) ('up-regulation', 'PosReg', (77, 90)) ('glucose metabolism', 'Disease', (94, 112)) 36258 32511227 glucagon, we hypothesize that these mutations may fuel the pseudohypoxic state by altering glucose uptake in cancer cells. ('cancer', 'Disease', 'MESH:D009369', (109, 115)) ('glucose uptake', 'MPA', (91, 105)) ('glucagon', 'Gene', '2641', (0, 8)) ('cancer', 'Disease', (109, 115)) ('mutations', 'Var', (36, 45)) ('pseudohypoxic state', 'MPA', (59, 78)) ('glucose', 'Chemical', 'MESH:D005947', (91, 98)) ('fuel', 'PosReg', (50, 54)) ('cancer', 'Phenotype', 'HP:0002664', (109, 115)) ('glucagon', 'Gene', (0, 8)) ('altering', 'Reg', (82, 90)) 36268 32511227 Inherited mutations have been identified in more than 14 genes, most commonly in VHL, SDHB, SDHD, NF1, and RET. ('SDHB', 'Gene', (86, 90)) ('SDHD', 'Gene', '6392', (92, 96)) ('VHL', 'Gene', (81, 84)) ('RET', 'Gene', '5979', (107, 110)) ('SDHD', 'Gene', (92, 96)) ('VHL', 'Gene', '7428', (81, 84)) ('NF1', 'Gene', (98, 101)) ('NF1', 'Gene', '4763', (98, 101)) ('RET', 'Gene', (107, 110)) ('mutations', 'Var', (10, 19)) ('SDHB', 'Gene', '6390', (86, 90)) 36269 32511227 The most frequently mutated genes in PPGL belong to a wide range of functional classes, including kinase receptor and signaling (RET, NF1, HRAS, and MAX); energy metabolism (SDHA, SDHB, SDHC, SDHD, SDHAF2, FH); cellular response to hypoxia (VHL, and EPAS1 (also known as HIF2A)); endosomal signaling (TMEM127), and chromatin remodeling (ATRX). ('hypoxia', 'Disease', (232, 239)) ('TMEM127', 'Gene', (301, 308)) ('SDHD', 'Gene', (192, 196)) ('NF1', 'Gene', '4763', (134, 137)) ('hypoxia', 'Disease', 'MESH:D000860', (232, 239)) ('SDHB', 'Gene', '6390', (180, 184)) ('RET', 'Gene', (129, 132)) ('EPAS1', 'Gene', (250, 255)) ('HRAS', 'Gene', '3265', (139, 143)) ('SDHAF2', 'Gene', (198, 204)) ('NF1', 'Gene', (134, 137)) ('TMEM127', 'Gene', '55654', (301, 308)) ('SDHAF2', 'Gene', '54949', (198, 204)) ('ATRX', 'Gene', (337, 341)) ('SDHC', 'Gene', (186, 190)) ('HRAS', 'Gene', (139, 143)) ('VHL', 'Gene', (241, 244)) ('ATRX', 'Gene', '546', (337, 341)) ('SDHA', 'Gene', (198, 202)) ('mutated', 'Var', (20, 27)) ('SDHA', 'Gene', (174, 178)) ('endosomal signaling', 'MPA', (280, 299)) ('SDHB', 'Gene', (180, 184)) ('SDHA', 'Gene', '6389', (198, 202)) ('HIF2A', 'Gene', '2034', (271, 276)) ('SDHA', 'Gene', '6389', (174, 178)) ('cellular', 'MPA', (211, 219)) ('HIF2A', 'Gene', (271, 276)) ('VHL', 'Gene', '7428', (241, 244)) ('EPAS1', 'Gene', '2034', (250, 255)) ('PPGL', 'Gene', (37, 41)) ('PPGL', 'Chemical', '-', (37, 41)) ('SDHD', 'Gene', '6392', (192, 196)) ('chromatin remodeling', 'CPA', (315, 335)) ('RET', 'Gene', '5979', (129, 132)) ('SDHC', 'Gene', '6391', (186, 190)) ('energy metabolism', 'MPA', (155, 172)) 36271 32511227 Several additional genes have been recently reported, and the identification of more tumor-driving genes and mutations in PPGL could facilitate diagnosis, treatment decision, and may provide new therapeutic options for patients. ('tumor', 'Disease', (85, 90)) ('PPGL', 'Chemical', '-', (122, 126)) ('PPGL', 'Gene', (122, 126)) ('tumor', 'Disease', 'MESH:D009369', (85, 90)) ('mutations', 'Var', (109, 118)) ('patients', 'Species', '9606', (219, 227)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('facilitate', 'PosReg', (133, 143)) 36272 32511227 Through large-scale sequencing of PPGLs, we recently reported recurrent mutations in the actin-dependent motor Myosin Vb gene; MYO5B (Fig 1). ('mutations', 'Var', (72, 81)) ('Myosin Vb', 'Gene', (111, 120)) ('MYO5B', 'Gene', (127, 132)) ('; MYO5B', 'Gene', (125, 132)) ('PPGLs', 'Chemical', '-', (34, 39)) ('Myosin Vb', 'Gene', '4645', (111, 120)) ('PPGLs', 'Gene', (34, 39)) ('reported', 'Reg', (53, 61)) 36273 32511227 Out of five novel nonsynonymous mutations identified, two somatically derived MYO5B variants (NP_001073936: p.L587P and p.G1611S) were found in metastatic sympathetic PGL cases from our data set. ('p.G1611S', 'Mutation', 'rs748242455', (120, 128)) ('found', 'Reg', (135, 140)) ('p.L587P', 'Var', (108, 115)) ('p.L587P', 'SUBSTITUTION', 'None', (108, 115)) ('metastatic sympathetic PGL', 'Disease', (144, 170)) ('MYO5B', 'Gene', (78, 83)) ('p.G1611S', 'Var', (120, 128)) 36274 32511227 Further screening of two public PPGL data sets revealed three additional MYO5B mutations; one germline mutation in a metastatic PCC (p.R1641C), and two mutations in PCC tumor cases with metastatic potential (PASS score = 10) or metastasized disease (p.V1261G and p.D530E respectively). ('PCC', 'Gene', '1421', (165, 168)) ('mutations', 'Var', (79, 88)) ('metastasized disease', 'Disease', 'MESH:D009362', (228, 248)) ('p.V1261G', 'Mutation', 'rs925774656', (250, 258)) ('p.R1641C', 'Mutation', 'rs780999931', (133, 141)) ('PPGL', 'Chemical', '-', (32, 36)) ('metastatic potential', 'CPA', (186, 206)) ('PCC', 'Gene', (128, 131)) ('p.R1641C', 'Var', (133, 141)) ('PCC tumor', 'Disease', 'OMIM:115700', (165, 174)) ('PCC', 'Gene', '1421', (128, 131)) ('p.D530E', 'Mutation', 'rs200469007', (263, 270)) ('MYO5B', 'Gene', (73, 78)) ('p.V1261G', 'Var', (250, 258)) ('PCC tumor', 'Disease', (165, 174)) ('metastasized disease', 'Disease', (228, 248)) ('tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('PCC', 'Gene', (165, 168)) ('p.D530E', 'Var', (263, 270)) 36275 32511227 In addition, a novel somatic nonsynonymous mutation in isoform MYO5A (NP_000250.3: p.E926G) was discovered in a PCC tumor sample of our data set. ('MYO5A', 'Gene', (63, 68)) ('p.E926G', 'Var', (83, 90)) ('MYO5A', 'Gene', '4644', (63, 68)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('PCC tumor', 'Disease', (112, 121)) ('p.E926G', 'SUBSTITUTION', 'None', (83, 90)) ('PCC tumor', 'Disease', 'OMIM:115700', (112, 121)) 36279 32511227 Loss-of-function mutations in MYO5B are common in microvillus inclusion disease (MVID) and cause disruption of cell polarity. ('Loss-of-function', 'NegReg', (0, 16)) ('MVID', 'Disease', (81, 85)) ('MVID', 'Disease', 'MESH:C537470', (81, 85)) ('microvillus inclusion disease', 'Disease', (50, 79)) ('mutations', 'Var', (17, 26)) ('MYO5B', 'Gene', (30, 35)) 36281 32511227 For example, MYO5A expression is increased in a number of highly metastatic cancer cell lines and metastatic colorectal cancer tissues, and epigenetic downregulation of MYO5B has been reported to promote proliferation, invasion and migration in gastric cancer. ('MYO5A', 'Gene', (13, 18)) ('gastric cancer', 'Disease', (245, 259)) ('cancer', 'Disease', 'MESH:D009369', (253, 259)) ('cancer', 'Disease', (120, 126)) ('epigenetic downregulation', 'Var', (140, 165)) ('invasion', 'CPA', (219, 227)) ('cancer', 'Disease', 'MESH:D009369', (76, 82)) ('cancer', 'Phenotype', 'HP:0002664', (120, 126)) ('expression', 'MPA', (19, 29)) ('gastric cancer', 'Disease', 'MESH:D013274', (245, 259)) ('proliferation', 'CPA', (204, 217)) ('colorectal cancer', 'Disease', 'MESH:D015179', (109, 126)) ('MYO5A', 'Gene', '4644', (13, 18)) ('MYO5B', 'Gene', (169, 174)) ('colorectal cancer', 'Disease', (109, 126)) ('rat', 'Species', '10116', (211, 214)) ('rat', 'Species', '10116', (235, 238)) ('promote', 'PosReg', (196, 203)) ('cancer', 'Disease', 'MESH:D009369', (120, 126)) ('gastric cancer', 'Phenotype', 'HP:0012126', (245, 259)) ('increased', 'PosReg', (33, 42)) ('cancer', 'Disease', (253, 259)) ('cancer', 'Disease', (76, 82)) ('cancer', 'Phenotype', 'HP:0002664', (253, 259)) ('cancer', 'Phenotype', 'HP:0002664', (76, 82)) ('migration', 'CPA', (232, 241)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (109, 126)) 36282 32511227 Additionally, MYO5B mutations and methylation-independent loss of MYO5B expression that matched disease progression was recently reported in colorectal cancer. ('loss', 'NegReg', (58, 62)) ('MYO5B', 'Gene', (14, 19)) ('colorectal cancer', 'Disease', 'MESH:D015179', (141, 158)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (141, 158)) ('expression', 'MPA', (72, 82)) ('MYO5B', 'Gene', (66, 71)) ('colorectal cancer', 'Disease', (141, 158)) ('cancer', 'Phenotype', 'HP:0002664', (152, 158)) ('mutations', 'Var', (20, 29)) 36283 32511227 Mutations identified in PPGL cases are located in three domains of the MYO5B protein; the ATP dependent actin binding motor domain (p.D530E and p.L587P), coiled-coil rod domain mediating dimerization of motor protein and RAB8 binding (p.V1261G), and at the C-terminal globular tail domain that mediates cargo interactions and RAB11 binding (p.G1611S and p.R1641C). ('binding', 'Interaction', (332, 339)) ('p.D530E', 'Mutation', 'rs200469007', (132, 139)) ('p.G1611S', 'Var', (341, 349)) ('p.G1611S', 'Mutation', 'rs748242455', (341, 349)) ('mediates', 'Reg', (294, 302)) ('RAB11', 'Gene', (326, 331)) ('RAB8', 'Gene', '4218', (221, 225)) ('globular tail', 'Phenotype', 'HP:0002825', (268, 281)) ('binding', 'Interaction', (226, 233)) ('p.L587P', 'Var', (144, 151)) ('p.D530E', 'Var', (132, 139)) ('p.L587P', 'Mutation', 'rs750054708', (144, 151)) ('RAB11', 'Gene', '8766', (326, 331)) ('ATP', 'Chemical', 'MESH:D000255', (90, 93)) ('PPGL', 'Chemical', '-', (24, 28)) ('p.R1641C', 'Mutation', 'rs780999931', (354, 362)) ('PPGL', 'Gene', (24, 28)) ('p.V1261G', 'Var', (235, 243)) ('p.R1641C', 'Var', (354, 362)) ('interactions', 'Interaction', (309, 321)) ('RAB8', 'Gene', (221, 225)) ('p.V1261G', 'Mutation', 'rs925774656', (235, 243)) 36284 32511227 By functional prediction software, all five missense mutations were predicted to have an impact on the protein function, and none of the PPGL mutations were overlapping with previous reported MYO5B mutation spectra in colorectal cancer or MVID (Fig 1). ('colorectal cancer', 'Disease', (218, 235)) ('missense mutations', 'Var', (44, 62)) ('MVID', 'Disease', 'MESH:C537470', (239, 243)) ('PPGL', 'Chemical', '-', (137, 141)) ('impact', 'Reg', (89, 95)) ('PPGL', 'Gene', (137, 141)) ('protein function', 'MPA', (103, 119)) ('colorectal cancer', 'Disease', 'MESH:D015179', (218, 235)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (218, 235)) ('cancer', 'Phenotype', 'HP:0002664', (229, 235)) ('MVID', 'Disease', (239, 243)) 36290 32511227 The strongest and most aberrant MYO5B expression pattern was observed in case CPN8 harboring the p.G1611S MYO5B mutation (Fig 2A). ('MYO5B', 'Protein', (32, 37)) ('expression', 'MPA', (38, 48)) ('p.G1611S', 'Var', (97, 105)) ('p.G1611S', 'Mutation', 'rs748242455', (97, 105)) ('MYO5B', 'Gene', (106, 111)) 36294 32511227 This difference was mainly due to two metastatic cases (CPN4 and CPN8) showing a 10-fold higher MYO5B expression than the non-metastatic cases, and interestingly, these were the same two cases showing an aberrant membranous staining by IHC (Fig 2B). ('CPN8', 'Var', (65, 69)) ('expression', 'MPA', (102, 112)) ('MYO5B', 'Protein', (96, 101)) ('higher', 'PosReg', (89, 95)) ('CPN4', 'Gene', '131034', (56, 60)) ('CPN4', 'Gene', (56, 60)) 36296 32511227 Mutation analysis of 40 genes by exome sequencing, and complementary Multiplex Ligation-dependent Probe Amplification (MLPA) analysis of 6 genes, identified a causative PPGL mutation in 23 out of 30 cases; 6 RET-mutated, 3 NF1-mutated, 4 VHL-mutated, 2 HRAS-mutated, 6 SDHx-mutated (SDHA, -B, -C, and -D), and 2 EPAS1-mutated tumors (Table 1; S1 Table and S2 Table). ('NF1', 'Gene', '4763', (223, 226)) ('tumors', 'Phenotype', 'HP:0002664', (326, 332)) ('VHL', 'Gene', '7428', (238, 241)) ('RET', 'Gene', '5979', (208, 211)) ('SDHx-mutated (SDHA, -B, -C, and -D', 'Gene', '6389', (269, 303)) ('NF1', 'Gene', (223, 226)) ('tumors', 'Disease', (326, 332)) ('EPAS1', 'Gene', (312, 317)) ('PPGL', 'Gene', (169, 173)) ('PPGL', 'Chemical', '-', (169, 173)) ('RET', 'Gene', (208, 211)) ('mutation', 'Var', (174, 182)) ('tumors', 'Disease', 'MESH:D009369', (326, 332)) ('VHL', 'Gene', (238, 241)) ('EPAS1', 'Gene', '2034', (312, 317)) ('tumor', 'Phenotype', 'HP:0002664', (326, 331)) ('causative', 'Reg', (159, 168)) ('HRAS', 'Gene', '3265', (253, 257)) ('HRAS', 'Gene', (253, 257)) 36298 32511227 Mutations in RET, NF1, VHL, and HRAS were solely found in patients with PCC tumors, while mutations in SDH-genes were mainly found in patients with PGL tumors or metastatic PCC (Table 1). ('VHL', 'Gene', (23, 26)) ('PGL tumors', 'Disease', (148, 158)) ('patients', 'Species', '9606', (134, 142)) ('PGL tumors', 'Disease', 'MESH:D010235', (148, 158)) ('SDH', 'Gene', '6390', (103, 106)) ('PCC tumors', 'Disease', 'OMIM:115700', (72, 82)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) ('Mutations', 'Var', (0, 9)) ('VHL', 'Gene', '7428', (23, 26)) ('RET', 'Gene', '5979', (13, 16)) ('tumors', 'Phenotype', 'HP:0002664', (152, 158)) ('found', 'Reg', (49, 54)) ('HRAS', 'Gene', '3265', (32, 36)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('HRAS', 'Gene', (32, 36)) ('SDH', 'Gene', (103, 106)) ('patients', 'Species', '9606', (58, 66)) ('PCC', 'Gene', (72, 75)) ('PCC', 'Gene', (173, 176)) ('NF1', 'Gene', '4763', (18, 21)) ('found', 'Reg', (125, 130)) ('RET', 'Gene', (13, 16)) ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('PCC', 'Gene', '1421', (72, 75)) ('PCC', 'Gene', '1421', (173, 176)) ('PCC tumors', 'Disease', (72, 82)) ('NF1', 'Gene', (18, 21)) 36301 32511227 This pattern could either be due to loss of the SDHB-region, or chromosome 1p-deletion which is a classical somatic event in PPGL. ('loss', 'NegReg', (36, 40)) ('chromosome 1p-deletion', 'Var', (64, 86)) ('SDHB', 'Gene', '6390', (48, 52)) ('PPGL', 'Chemical', '-', (125, 129)) ('SDHB', 'Gene', (48, 52)) 36302 32511227 Also, in CPN93 presenting syndromic NF1, a deletion of the whole NF1 gene was detected, This is most probably a secondary inactivation event occurring after a primary NF1 mutation, whichever could not be detected in the current analysis. ('NF1', 'Gene', (36, 39)) ('NF1', 'Gene', '4763', (36, 39)) ('deletion', 'Var', (43, 51)) ('NF1', 'Gene', (167, 170)) ('NF1', 'Gene', '4763', (167, 170)) ('NF1', 'Gene', (65, 68)) ('NF1', 'Gene', '4763', (65, 68)) 36303 32511227 In sample CPN81, a RET mutation (p.C609Y) was found at an allele frequency (AF) of 0.98, indicating a loss of heterozygosity of the wild type allele in the tumor tissue. ('RET', 'Gene', (19, 22)) ('p.C609Y', 'Mutation', 'rs77939446', (33, 40)) ('tumor', 'Disease', 'MESH:D009369', (156, 161)) ('AF', 'Disease', 'MESH:D001281', (76, 78)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('RET', 'Gene', '5979', (19, 22)) ('tumor', 'Disease', (156, 161)) ('p.C609Y', 'Var', (33, 40)) 36305 32511227 Somatic mutations in 8 cases (CPN1-9) have been previously reported, and in the current study including 22 additional cases the following new mutations were identified: ARNT:p.Q391K, MYO5A:p.P1194Q, MYO9B:p.H1726Y and SLC25A11:p.A200S. ('MYO5A:p.P1194Q', 'Var', (183, 197)) ('MYO9B:p.H1726Y', 'Var', (199, 213)) ('CPN1-9', 'Gene', (30, 36)) ('ARNT:p.Q391K', 'Var', (169, 181)) ('CPN1-9', 'Gene', '1369;1370;8895;131034;57699', (30, 36)) ('MYO5A:p.P1194Q', 'SUBSTITUTION', 'None', (183, 197)) ('ARNT:p.Q391K', 'SUBSTITUTION', 'None', (169, 181)) ('MYO9B:p.H1726Y', 'SUBSTITUTION', 'None', (199, 213)) ('SLC25A11:p.A200S', 'Var', (218, 234)) ('SLC25A11:p.A200S', 'SUBSTITUTION', 'None', (218, 234)) 36306 32511227 Hence, by this study we have also identified the MYO5A gene as recurrently mutated in PPGLs; MYO5A:p.E926G previously identified in case CPN1 (somatic, AF = 0.29,) and MYO5A:p.P1194Q identified in case CPN29 (somatic, AF = 0.25; S2 Table). ('MYO5A:p.E926G', 'SUBSTITUTION', 'None', (93, 106)) ('MYO5A', 'Gene', (168, 173)) ('MYO5A', 'Gene', (93, 98)) ('CPN1', 'Gene', '1369', (137, 141)) ('CPN1', 'Gene', (137, 141)) ('MYO5A', 'Gene', (49, 54)) ('MYO5A', 'Gene', '4644', (168, 173)) ('MYO5A', 'Gene', '4644', (49, 54)) ('AF', 'Disease', 'MESH:D001281', (218, 220)) ('PPGLs', 'Chemical', '-', (86, 91)) ('AF', 'Disease', 'MESH:D001281', (152, 154)) ('MYO5A', 'Gene', '4644', (93, 98)) ('MYO5A:p.P1194Q', 'Var', (168, 182)) ('MYO5A:p.P1194Q', 'SUBSTITUTION', 'None', (168, 182)) ('MYO5A:p.E926G', 'Var', (93, 106)) 36307 32511227 In addition, a third MYO5A missense mutation, NM_000259.3: c.5065G>A, p.V1689I was identified in case CPN15 (germline, AF = 0.51), but this variant was filtered out due to presence in normal population (AF = 0.23% in Genome Aggregation Database (gnomAD) ALL). ('AF', 'Disease', 'MESH:D001281', (119, 121)) ('AF', 'Disease', 'MESH:D001281', (203, 205)) ('c.5065G>A', 'SUBSTITUTION', 'None', (59, 68)) ('MYO5A', 'Gene', (21, 26)) ('CPN1', 'Gene', '1369', (102, 106)) ('c.5065G>A', 'Var', (59, 68)) ('CPN1', 'Gene', (102, 106)) ('MYO5A', 'Gene', '4644', (21, 26)) ('p.V1689I', 'Var', (70, 78)) ('p.V1689I', 'Mutation', 'rs143298463', (70, 78)) 36308 32511227 All three MYO5A mutations were predicted to be damaging by at least 2 out of 3 functional prediction algorithms (i.e. ('MYO5A', 'Gene', (10, 15)) ('MYO5A', 'Gene', '4644', (10, 15)) ('mutations', 'Var', (16, 25)) 36311 32511227 In addition, the CPN4 case, harboring a SDHA promoter mutation, showed a unique expression profile which did not fit well into any of the major PPGL expression subgroups (S2 Fig). ('mutation', 'Var', (54, 62)) ('SDHA', 'Gene', '6389', (40, 44)) ('CPN4', 'Gene', (17, 21)) ('expression', 'MPA', (80, 90)) ('SDHA', 'Gene', (40, 44)) ('PPGL', 'Chemical', '-', (144, 148)) ('CPN4', 'Gene', '131034', (17, 21)) 36312 32511227 The SDHA promotor mutation (c.-7A>C, p.? ('c.-7A>C', 'Mutation', 'rs751633537', (28, 35)) ('SDHA', 'Gene', (4, 8)) ('SDHA', 'Gene', '6389', (4, 8)) ('c.-7A>C', 'Var', (28, 35)) 36313 32511227 Three previously identified MYO5B missense mutations were selected based on theoretical prediction as damaging/deleterious/disease causing; c.1760T>C, p.L597P; c.4831G>A, p.G1611S; c.4921C>T, p.R1641C (NM_001080467) (Fig 1). ('MYO5B', 'Gene', (28, 33)) ('p.R1641C', 'Mutation', 'rs780999931', (192, 200)) ('p.G1611S; c.4921C>T', 'Var', (171, 190)) ('c.4921C>T', 'Var', (181, 190)) ('c.1760T>C', 'Var', (140, 149)) ('c.1760T>C', 'Mutation', 'rs750054708', (140, 149)) ('c.4831G>A', 'Mutation', 'rs748242455', (160, 169)) ('p.L597P', 'Mutation', 'rs750054708', (151, 158)) ('p.R1641C', 'Var', (192, 200)) ('c.4921C>T', 'Mutation', 'rs780999931', (181, 190)) ('p.G1611S', 'Mutation', 'rs748242455', (171, 179)) ('c.4831G>A', 'Var', (160, 169)) 36314 32511227 Stable clones of MYO5B mutants, MYO5B wildtype (WT) and empty vector constructs were generated in SK-N-AS and HEK293 cells. ('SK-N-AS', 'Chemical', '-', (98, 105)) ('MYO5B', 'Gene', (17, 22)) ('rat', 'Species', '10116', (89, 92)) ('HEK293', 'CellLine', 'CVCL:0045', (110, 116)) ('mutants', 'Var', (23, 30)) 36315 32511227 Western blot analysis of constructs showed a 230 kDa band representing endogenous expressed MYO5B protein, and 260 kDa band corresponding the additional size of the Myc-DKK-tag in transfected wildtype and mutated MYO5B proteins (Fig 3A). ('Myc', 'Gene', '4609', (165, 168)) ('Myc', 'Gene', (165, 168)) ('mutated', 'Var', (205, 212)) 36317 32511227 By immunofluorescence the protein expression of mutated MYO5B (FLAG-tagged) showed a scattered cytoplasmic staining in small punctate spots, presumably localized to endosomal vesicles, in HEK293 cells (Fig 3B). ('HEK293', 'CellLine', 'CVCL:0045', (188, 194)) ('MYO5B', 'Gene', (56, 61)) ('mutated', 'Var', (48, 55)) 36318 32511227 In order to assess the functional impact of the three MYO5B mutations in cultured, stably transfected cell lines, we investigated their ability to affect proliferation, migration and endosomal recycling. ('MYO5B', 'Gene', (54, 59)) ('endosomal recycling', 'CPA', (183, 202)) ('migration', 'CPA', (169, 178)) ('rat', 'Species', '10116', (172, 175)) ('rat', 'Species', '10116', (161, 164)) ('mutations', 'Var', (60, 69)) ('proliferation', 'CPA', (154, 167)) ('affect', 'Reg', (147, 153)) 36319 32511227 A significant increased proliferation (p<0.05) was found in all the three MYO5B mutations at 48h (p.L587P 1.8 fold; p.G1611S 1.6 fold; p.R1641C 1.7 fold), and the first and second mutations were also significant at 72h (p.L587P 2.1 fold; p.G1611S 1.9 fold) compared to MYO5BWT and empty vector clones (Fig 4A). ('increased', 'PosReg', (14, 23)) ('proliferation', 'CPA', (24, 37)) ('mutations', 'Var', (80, 89)) ('p.G1611S', 'Var', (238, 246)) ('p.R1641C', 'Var', (135, 143)) ('p.L587P', 'Mutation', 'rs750054708', (98, 105)) ('p.G1611S', 'Mutation', 'rs748242455', (238, 246)) ('p.L587P', 'Mutation', 'rs750054708', (220, 227)) ('MYO5B', 'Gene', (74, 79)) ('p.G1611S', 'Var', (116, 124)) ('p.R1641C', 'Mutation', 'rs780999931', (135, 143)) ('rat', 'Species', '10116', (31, 34)) ('p.G1611S', 'Mutation', 'rs748242455', (116, 124)) 36320 32511227 The scratch-wound assay showed an increased migration rate of p.L587P and p.G1611S mutants with only 10% of the wound starting area remaining after 24 h, compared to MYO5BWT cells having 22% of the wound starting area remaining (Fig 4B). ('p.L587P', 'Var', (62, 69)) ('rat', 'Species', '10116', (54, 57)) ('rat', 'Species', '10116', (47, 50)) ('p.G1611S', 'Var', (74, 82)) ('migration rate', 'CPA', (44, 58)) ('p.L587P', 'Mutation', 'rs750054708', (62, 69)) ('rat', 'Species', '10116', (6, 9)) ('p.G1611S', 'Mutation', 'rs748242455', (74, 82)) ('increased', 'PosReg', (34, 43)) 36323 32511227 By visual inspection and fluorescence measurement of transferrin (Tf), the MYO5B mutations displayed a somewhat higher transferrin uptake (1.5-2 fold), most apparent in the cells harboring the p.L587P and p.G1611S mutations (Fig 4C). ('p.L587P', 'Mutation', 'rs750054708', (193, 200)) ('higher', 'PosReg', (112, 118)) ('p.G1611S', 'Var', (205, 213)) ('transferrin', 'Gene', '7018', (53, 64)) ('p.L587P', 'Var', (193, 200)) ('p.G1611S', 'Mutation', 'rs748242455', (205, 213)) ('transferrin', 'Gene', (53, 64)) ('Tf', 'Gene', '7018', (66, 68)) ('mutations', 'Var', (81, 90)) ('transferrin', 'Gene', '7018', (119, 130)) ('MYO5B', 'Gene', (75, 80)) ('transferrin', 'Gene', (119, 130)) 36324 32511227 However, by relating the transferrin uptake to its receptor (TfR), the p.G1611S and p.R1641C mutants were found to express the transferrin receptor in almost the same proportion as transferrin, leaving p.L587P as the only mutation with slight impact on endosomal transport of transferrin (Fig 4C). ('p.R1641C', 'Mutation', 'rs780999931', (84, 92)) ('transferrin', 'Gene', '7018', (127, 138)) ('transferrin', 'Gene', '7018', (25, 36)) ('transferrin', 'Gene', '7018', (181, 192)) ('transferrin', 'Gene', (25, 36)) ('transferrin', 'Gene', (181, 192)) ('transferrin', 'Gene', '7018', (276, 287)) ('endosomal transport', 'MPA', (253, 272)) ('TfR', 'Gene', (61, 64)) ('p.R1641C', 'Var', (84, 92)) ('transferrin', 'Gene', (276, 287)) ('p.L587P', 'Mutation', 'rs750054708', (202, 209)) ('p.G1611S', 'Var', (71, 79)) ('p.G1611S', 'Mutation', 'rs748242455', (71, 79)) ('TfR', 'Gene', '7037', (61, 64)) ('transferrin', 'Gene', (127, 138)) ('p.L587P', 'Var', (202, 209)) 36325 32511227 To elucidate the signaling pathways associated with MYO5B mutations in more detail, a transcriptome microarray analysis was performed in SK-N-AS constructs from three time points of proliferation (24h, 48h, and 72h) and from two replicated experiments. ('MYO5B', 'Gene', (52, 57)) ('mutations', 'Var', (58, 67)) ('SK-N-AS', 'Chemical', '-', (137, 144)) ('rat', 'Species', '10116', (189, 192)) 36326 32511227 Next, the top-ranked differentially expressed genes from all three MYO5B mutants were filtered out, and analyzed for enrichment of cellular processes using the Gene Ontology tool GOrilla (http://cbl-gorilla.cs.technion.ac.il) (S5 Table). ('GOrilla', 'Disease', (179, 186)) ('gorilla', 'Species', '9593', (199, 206)) ('GOrilla', 'Disease', 'None', (179, 186)) ('mutants', 'Var', (73, 80)) ('MYO5B', 'Gene', (67, 72)) 36329 32511227 Moreover, Gene Set Enrichment Analysis (GSEA) was performed on each MYO5B mutant's merged gene list (ranked after mean fold change) analyzing 236 Hallmark and KEGG curated gene sets from the Molecular Signature database (http://software.broadinstitute.org/gsea/msigdb/index.jsp). ('MYO5B', 'Gene', (68, 73)) ('rat', 'Species', '10116', (166, 169)) ('msigdb', 'Disease', (261, 267)) ('mutant', 'Var', (74, 80)) ('msigdb', 'Disease', 'None', (261, 267)) 36330 32511227 The most enriched gene sets in the three MYO5B mutants were the following four up-regulated: "Hallmark Myc targets v1", "KEGG Base excision repair", "KEGG Basal transcription factors", "Hallmark E2F targets", and four down-regulated: "Hallmark TNFA Signaling via NFKB", "Hallmark Inflammatory response", "KEGG ECM Receptor interaction", "KEGG Arrhythmogenic right ventricular cardiomyopathy ARVC" (S7 Table). ('ventricular cardiomyopathy ARVC', 'Disease', 'MESH:C566255', (364, 395)) ('up-regulated', 'PosReg', (79, 91)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (376, 390)) ('Myc', 'Gene', '4609', (103, 106)) ('MYO5B', 'Gene', (41, 46)) ('ventricular cardiomyopathy ARVC', 'Disease', (364, 395)) ('Myc', 'Gene', (103, 106)) ('right ventricular cardiomyopathy', 'Phenotype', 'HP:0011663', (358, 390)) ('mutants', 'Var', (47, 54)) ('down-regulated', 'NegReg', (218, 232)) 36333 32511227 The highest fold change (DeltaDeltaCt >1.5 in at least 3/4 passages) for all three MYO5B mutants was found in three up-regulated genes: ARMCX2 (armadillo repeat containing X-linked 2), GCG (glucagon), INSM2 (insulin transcriptional repressor 2); and in four down-regulated genes: COL4A1 (Collagen Type IV Alpha 1 Chain), DLX5 (distal-less homeobox 5), IGFBP7 (insulin like growth factor binding protein 7), and POSTN (Periostin) (Fig 5; Table 2). ('COL4A1', 'Gene', (280, 286)) ('MYO5B', 'Gene', (83, 88)) ('IGFBP7', 'Gene', (352, 358)) ('Collagen Type IV Alpha 1 Chain', 'Gene', (288, 318)) ('DLX5', 'Gene', '1749', (321, 325)) ('insulin', 'Gene', '3630', (360, 367)) ('Periostin', 'Gene', '10631', (418, 427)) ('insulin', 'Gene', '3630', (208, 215)) ('mutants', 'Var', (89, 96)) ('up-regulated', 'PosReg', (116, 128)) ('INSM2', 'Gene', '84684', (201, 206)) ('IGFBP7', 'Gene', '3490', (352, 358)) ('Periostin', 'Gene', (418, 427)) ('ARMCX2', 'Gene', (136, 142)) ('distal-less homeobox 5', 'Gene', '1749', (327, 349)) ('armadillo repeat containing X-linked 2', 'Gene', (144, 182)) ('distal-less homeobox 5', 'Gene', (327, 349)) ('glucagon', 'Gene', (190, 198)) ('COL4A1', 'Gene', '1282', (280, 286)) ('armadillo repeat containing X-linked 2', 'Gene', '9823', (144, 182)) ('insulin like growth factor binding protein 7', 'Gene', (360, 404)) ('POSTN', 'Gene', (411, 416)) ('insulin', 'Gene', (360, 367)) ('insulin like growth factor binding protein 7', 'Gene', '3490', (360, 404)) ('Collagen Type IV Alpha 1 Chain', 'Gene', '1282', (288, 318)) ('INSM2', 'Gene', (201, 206)) ('ARMCX2', 'Gene', '9823', (136, 142)) ('insulin', 'Gene', (208, 215)) ('DLX5', 'Gene', (321, 325)) ('POSTN', 'Gene', '10631', (411, 416)) ('GCG', 'Gene', '2641', (185, 188)) ('glucagon', 'Gene', '2641', (190, 198)) ('GCG', 'Gene', (185, 188)) 36334 32511227 Glucagon (GCG) and the insulin transcriptional repressor 2 (INSM2) were undoubtedly the two most up-regulated genes in all the three MYO5B mutants, with mean fold change of 7 and 14 respectively (Table 2). ('Glucagon', 'Gene', '2641', (0, 8)) ('INSM2', 'Gene', '84684', (60, 65)) ('INSM2', 'Gene', (60, 65)) ('insulin', 'Gene', (23, 30)) ('up-regulated', 'PosReg', (97, 109)) ('insulin', 'Gene', '3630', (23, 30)) ('GCG', 'Gene', '2641', (10, 13)) ('mutants', 'Var', (139, 146)) ('Glucagon', 'Gene', (0, 8)) ('MYO5B', 'Gene', (133, 138)) ('GCG', 'Gene', (10, 13)) 36335 32511227 Analyzing GCG or INSM2 in primary tumors harboring MYO5B mutations (i.e. ('tumors', 'Disease', (34, 40)) ('tumors', 'Disease', 'MESH:D009369', (34, 40)) ('tumors', 'Phenotype', 'HP:0002664', (34, 40)) ('INSM2', 'Gene', (17, 22)) ('MYO5B', 'Gene', (51, 56)) ('INSM2', 'Gene', '84684', (17, 22)) ('mutations', 'Var', (57, 66)) ('GCG', 'Gene', '2641', (10, 13)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('GCG', 'Gene', (10, 13)) 36338 32511227 However, a heat map of the MYO5B mutation associated gene transcripts revealed a differential expression between the two major subtypes of PPGLs (S3A Fig). ('PPGLs', 'Chemical', '-', (139, 144)) ('differential', 'Reg', (81, 93)) ('mutation', 'Var', (33, 41)) ('MYO5B', 'Gene', (27, 32)) ('expression', 'MPA', (94, 104)) 36343 32511227 We have previously published a study identifying novel recurrent MYO5B mutations in metastatic PPGL. ('metastatic PPGL', 'Disease', (84, 99)) ('PPGL', 'Chemical', '-', (95, 99)) ('mutations', 'Var', (71, 80)) ('MYO5B', 'Gene', (65, 70)) 36344 32511227 Here, we functionally verified the tumorigenic properties of three of these mutations by in-vitro studies in SK-N-AS and HEK293 cell lines. ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('mutations', 'Var', (76, 85)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('tumor', 'Disease', (35, 40)) ('HEK293', 'CellLine', 'CVCL:0045', (121, 127)) ('SK-N-AS', 'Chemical', '-', (109, 116)) 36346 32511227 Also, analyses in primary tumors revealed differential expression and altered sub-cellular localization of the MYO5B protein in metastatic PPGL, and mutation screening of additional PPGL cases identified recurrent mutations in the MYO5A paralog. ('MYO5A', 'Gene', '4644', (231, 236)) ('altered', 'Reg', (70, 77)) ('PPGL', 'Chemical', '-', (139, 143)) ('tumors', 'Phenotype', 'HP:0002664', (26, 32)) ('mutations', 'Var', (214, 223)) ('sub-cellular localization', 'MPA', (78, 103)) ('MYO5A', 'Gene', (231, 236)) ('expression', 'MPA', (55, 65)) ('MYO5B', 'Gene', (111, 116)) ('tumors', 'Disease', 'MESH:D009369', (26, 32)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('PPGL', 'Chemical', '-', (182, 186)) ('mutation', 'Var', (149, 157)) ('PPGL', 'Gene', (182, 186)) ('tumors', 'Disease', (26, 32)) 36348 32511227 Mutations in MYO5B have been shown to disrupt cellular polarity in MVID. ('MYO5B', 'Gene', (13, 18)) ('disrupt', 'NegReg', (38, 45)) ('cellular polarity', 'CPA', (46, 63)) ('MVID', 'Disease', 'MESH:C537470', (67, 71)) ('Mutations', 'Var', (0, 9)) ('MVID', 'Disease', (67, 71)) 36353 32511227 Low protein levels of MYO5B has been shown to be associated with motility of gastric cells, and expression level and mutations in MYO5B has been reported as a powerful prognostic biomarker in colorectal cancer, which might help to stratifying patients for adjuvant therapy. ('mutations', 'Var', (117, 126)) ('protein levels', 'MPA', (4, 18)) ('colorectal cancer', 'Disease', (192, 209)) ('patients', 'Species', '9606', (243, 251)) ('associated', 'Reg', (49, 59)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (192, 209)) ('colorectal cancer', 'Disease', 'MESH:D015179', (192, 209)) ('rat', 'Species', '10116', (233, 236)) ('expression level', 'MPA', (96, 112)) ('motility of gastric cells', 'CPA', (65, 90)) ('Low', 'NegReg', (0, 3)) ('MYO5B', 'Gene', (130, 135)) ('cancer', 'Phenotype', 'HP:0002664', (203, 209)) 36355 32511227 Moreover, an altered subcellular localization of the MYO5B protein to the membrane was observed in three metastatic cases, and the most prominent abnormal pattern was observed in the tumor case harboring the p.G1611S mutation. ('subcellular localization', 'MPA', (21, 45)) ('tumor', 'Disease', 'MESH:D009369', (183, 188)) ('tumor', 'Phenotype', 'HP:0002664', (183, 188)) ('tumor', 'Disease', (183, 188)) ('MYO5B protein', 'Protein', (53, 66)) ('p.G1611S', 'Var', (208, 216)) ('p.G1611S', 'Mutation', 'rs748242455', (208, 216)) ('altered', 'Reg', (13, 20)) 36357 32511227 The tumorigenic properties of the MYO5B mutations were demonstrated by a significantly increased proliferation rate for all three missense mutations (p.L587P, p.G1611S and p.R1641C). ('tumor', 'Disease', (4, 9)) ('increased', 'PosReg', (87, 96)) ('rat', 'Species', '10116', (111, 114)) ('p.R1641C', 'Var', (172, 180)) ('p.G1611S', 'Var', (159, 167)) ('MYO5B', 'Gene', (34, 39)) ('p.L587P', 'Mutation', 'rs750054708', (150, 157)) ('p.G1611S', 'Mutation', 'rs748242455', (159, 167)) ('proliferation rate', 'CPA', (97, 115)) ('p.R1641C', 'Mutation', 'rs780999931', (172, 180)) ('tumor', 'Disease', 'MESH:D009369', (4, 9)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) ('p.L587P', 'Var', (150, 157)) ('rat', 'Species', '10116', (62, 65)) ('rat', 'Species', '10116', (104, 107)) 36358 32511227 Furthermore, the p.L587P and p.G1611S mutations both showed increased migratory properties, and consistently the most significantly enriched GO-term among the differentially expressed genes in MYO5B-mutants was "positive regulation of migration". ('p.L587P', 'Mutation', 'rs750054708', (17, 24)) ('p.G1611S', 'Var', (29, 37)) ('MYO5B-mutants', 'Gene', (193, 206)) ('p.G1611S', 'Mutation', 'rs748242455', (29, 37)) ('migratory properties', 'CPA', (70, 90)) ('p.L587P', 'Var', (17, 24)) ('increased', 'PosReg', (60, 69)) ('rat', 'Species', '10116', (73, 76)) ('rat', 'Species', '10116', (238, 241)) 36359 32511227 With regard to the p.R1641C, it appears that this mutation had less effect on proliferation compared to the other two MYO5B mutations, and also did not increase migration. ('increase', 'PosReg', (152, 160)) ('rat', 'Species', '10116', (85, 88)) ('p.R1641C', 'Var', (19, 27)) ('rat', 'Species', '10116', (164, 167)) ('migration', 'CPA', (161, 170)) ('p.R1641C', 'Mutation', 'rs780999931', (19, 27)) 36360 32511227 This is possibly due to the fact that p.R1641C was identified as a germline mutation in the primary case, while p.L587P and p.G1611S were originally discovered as somatic mutations. ('p.R1641C', 'Var', (38, 46)) ('p.G1611S', 'Var', (124, 132)) ('p.L587P', 'Mutation', 'rs750054708', (112, 119)) ('p.G1611S', 'Mutation', 'rs748242455', (124, 132)) ('p.R1641C', 'Mutation', 'rs780999931', (38, 46)) ('p.L587P', 'Var', (112, 119)) 36362 32511227 Although a moderately higher transferrin uptake in all three MYO5B mutants was observed, only p.L587P showed a slight effect on transferrin uptake after normalization to the transferrin receptor expression. ('higher', 'PosReg', (22, 28)) ('rat', 'Species', '10116', (15, 18)) ('p.L587P', 'Var', (94, 101)) ('transferrin', 'Gene', '7018', (128, 139)) ('transferrin', 'Gene', (128, 139)) ('transferrin', 'Gene', '7018', (29, 40)) ('p.L587P', 'Mutation', 'rs750054708', (94, 101)) ('transferrin', 'Gene', (29, 40)) ('transferrin', 'Gene', '7018', (174, 185)) ('transferrin', 'Gene', (174, 185)) ('MYO5B', 'Gene', (61, 66)) 36363 32511227 Since the p.L587P is located in the actin binding myosin head, while p.G1611S and p.R1641C are located in the tail domain mediating Rab11 binding, the mechanisms may differ, which could also explain the different influence on transferrin receptor expression. ('myosin', 'Gene', (50, 56)) ('p.G1611S', 'Var', (69, 77)) ('p.R1641C', 'Mutation', 'rs780999931', (82, 90)) ('p.L587P', 'Var', (10, 17)) ('p.G1611S', 'Mutation', 'rs748242455', (69, 77)) ('myosin', 'Gene', '79784', (50, 56)) ('binding', 'Interaction', (138, 145)) ('Rab11', 'Gene', '8766', (132, 137)) ('p.R1641C', 'Var', (82, 90)) ('p.L587P', 'Mutation', 'rs750054708', (10, 17)) ('Rab11', 'Gene', (132, 137)) 36364 32511227 Taken together, the functional in vitro studies of MYO5B mutations suggests a gain of function or a dominant negative role of the mutants, enhancing mainly proliferation and migration. ('rat', 'Species', '10116', (163, 166)) ('gain of function', 'PosReg', (78, 94)) ('rat', 'Species', '10116', (177, 180)) ('proliferation', 'CPA', (156, 169)) ('MYO5B', 'Gene', (51, 56)) ('mutations', 'Var', (57, 66)) ('enhancing', 'PosReg', (139, 148)) ('migration', 'CPA', (174, 183)) 36365 32511227 The downstream transcriptome analysis of transfected SK-N-AS MYO5B-mutants showed a differential expression of genes involved in cell growth and proliferation, cell migration, cell adhesion, endosomal transport and glucose metabolism. ('MYO5B-mutants', 'Var', (61, 74)) ('rat', 'Species', '10116', (152, 155)) ('glucose metabolism', 'Disease', (215, 233)) ('SK-N-AS', 'Chemical', '-', (53, 60)) ('cell growth', 'CPA', (129, 140)) ('cell adhesion', 'CPA', (176, 189)) ('rat', 'Species', '10116', (168, 171)) ('MYO5B-mutants', 'Gene', (61, 74)) ('cell migration', 'CPA', (160, 174)) ('glucose metabolism', 'Disease', 'MESH:D044882', (215, 233)) ('expression', 'MPA', (97, 107)) 36367 32511227 Also, IGFBP7 (insulin-like growth factor binding protein 7), has been reported as epigenetically down-regulated and an independent prognostic factor in gastric cancer, leading to increased cell growth, invasion and migration. ('cell growth', 'CPA', (189, 200)) ('IGFBP7', 'Gene', (6, 12)) ('gastric cancer', 'Disease', 'MESH:D013274', (152, 166)) ('gastric cancer', 'Disease', (152, 166)) ('insulin-like growth factor binding protein 7', 'Gene', (14, 58)) ('epigenetically', 'Var', (82, 96)) ('IGFBP7', 'Gene', '3490', (6, 12)) ('insulin-like growth factor binding protein 7', 'Gene', '3490', (14, 58)) ('rat', 'Species', '10116', (218, 221)) ('invasion', 'CPA', (202, 210)) ('migration', 'CPA', (215, 224)) ('gastric cancer', 'Phenotype', 'HP:0012126', (152, 166)) ('cancer', 'Phenotype', 'HP:0002664', (160, 166)) ('increased', 'PosReg', (179, 188)) ('down-regulated', 'NegReg', (97, 111)) 36368 32511227 Moreover, deletion of IGFBP7 was found to increase proliferation in hepatocellular carcinoma by a constitutively active IGF signaling. ('IGFBP7', 'Gene', '3490', (22, 28)) ('increase', 'PosReg', (42, 50)) ('IGFBP7', 'Gene', (22, 28)) ('proliferation', 'CPA', (51, 64)) ('IGF signaling', 'MPA', (120, 133)) ('rat', 'Species', '10116', (58, 61)) ('deletion', 'Var', (10, 18)) ('hepatocellular carcinoma', 'Disease', 'MESH:D006528', (68, 92)) ('hepatocellular carcinoma', 'Phenotype', 'HP:0001402', (68, 92)) ('carcinoma', 'Phenotype', 'HP:0030731', (83, 92)) ('hepatocellular carcinoma', 'Disease', (68, 92)) 36372 32511227 Most conspicuous was the 14-fold increase in expression of INSM2 (insulin transcriptional repressor 2) and the 7-fold increase in expression of GCG (glucagon) in all three MYO5B mutants. ('expression', 'MPA', (130, 140)) ('glucagon', 'Gene', (149, 157)) ('increase', 'PosReg', (118, 126)) ('INSM2', 'Gene', '84684', (59, 64)) ('INSM2', 'Gene', (59, 64)) ('MYO5B', 'Gene', (172, 177)) ('increase', 'PosReg', (33, 41)) ('insulin', 'Gene', (66, 73)) ('expression', 'MPA', (45, 55)) ('GCG', 'Gene', '2641', (144, 147)) ('glucagon', 'Gene', '2641', (149, 157)) ('insulin', 'Gene', '3630', (66, 73)) ('mutants', 'Var', (178, 185)) ('GCG', 'Gene', (144, 147)) 36374 32511227 Deletion of Insm2 in mice resulted in reduced insulin secretion and glucose intolerance. ('Insm2', 'Gene', (12, 17)) ('glucose intolerance', 'Phenotype', 'HP:0001952', (68, 87)) ('mice', 'Species', '10090', (21, 25)) ('Insm2', 'Gene', '56856', (12, 17)) ('reduced insulin secretion and glucose intolerance', 'Disease', 'MESH:D054971', (38, 87)) ('Deletion', 'Var', (0, 8)) 36379 32511227 Thus, the increased proliferation rate seen in the MYO5B mutants might be driven through altered energy metabolisms. ('altered', 'Reg', (89, 96)) ('MYO5B', 'Gene', (51, 56)) ('rat', 'Species', '10116', (27, 30)) ('rat', 'Species', '10116', (34, 37)) ('mutants', 'Var', (57, 64)) ('proliferation rate', 'CPA', (20, 38)) ('increased', 'PosReg', (10, 19)) ('energy', 'MPA', (97, 103)) 36383 32511227 Provocative tests using glucagon has previously been performed in patients with undiscovered PPGLs, and these tests have been reported to lead to multi-organ failure or hypertensive emergency in some cases. ('hypertensive emergency', 'Phenotype', 'HP:0100735', (169, 191)) ('glucagon', 'Gene', '2641', (24, 32)) ('multi-organ failure', 'Disease', 'MESH:D009102', (146, 165)) ('tests', 'Var', (110, 115)) ('patients', 'Species', '9606', (66, 74)) ('hypertensive', 'Disease', 'MESH:D006973', (169, 181)) ('multi-organ failure', 'Disease', (146, 165)) ('PPGLs', 'Chemical', '-', (93, 98)) ('glucagon', 'Gene', (24, 32)) ('lead to', 'Reg', (138, 145)) ('hypertensive', 'Disease', (169, 181)) ('PPGLs', 'Gene', (93, 98)) 36386 32511227 An increasing number of studies show dysregulation of the MYO5-pathway in tumorigenesis and malignancy. ('dysregulation', 'Var', (37, 50)) ('MYO5', 'Gene', '4644', (58, 62)) ('tumor', 'Disease', 'MESH:D009369', (74, 79)) ('MYO5', 'Gene', (58, 62)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('malignancy', 'Disease', 'MESH:D009369', (92, 102)) ('tumor', 'Disease', (74, 79)) ('malignancy', 'Disease', (92, 102)) 36387 32511227 In the present study we have functionally verified the tumorigenic role of three novel MYO5B mutations through their impact on proliferation and migration. ('tumor', 'Disease', 'MESH:D009369', (55, 60)) ('proliferation', 'CPA', (127, 140)) ('mutations', 'Var', (93, 102)) ('rat', 'Species', '10116', (148, 151)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('MYO5B', 'Gene', (87, 92)) ('tumor', 'Disease', (55, 60)) ('impact', 'Reg', (117, 123)) ('rat', 'Species', '10116', (134, 137)) 36403 32511227 The 22 new cases were sequenced by SureSelect v3/v5 (Agilent Technologies, CA) with paired-end (2*75-100bp) on a HiScanSQ (CPN10-15) or by SureSelect Clinical Research Exome v2 (CREv2; CPN16-CPN123), paired-end (2*100bp) on a NextSeq500 illumina sequencer. ('CPN1', 'Gene', (191, 195)) ('CPN1', 'Gene', '1369', (123, 127)) ('CPN1', 'Gene', (123, 127)) ('CPN1', 'Gene', '1369', (185, 189)) ('CPN1', 'Gene', (185, 189)) ('CPN1', 'Gene', '1369', (191, 195)) ('2*75-100bp', 'Var', (96, 106)) 36404 32511227 Only variants predicted to be damaging by functional prediction algorithms and/or previously reported in ClinVar (www.ncbi.nlm.nih.gov/clinvar/) or HGMD (portal.biobase-international.com) databases were included in the final mutation list (S2 Table). ('HGMD', 'Disease', 'None', (148, 152)) ('variants', 'Var', (5, 13)) ('HGMD', 'Disease', (148, 152)) 36405 32511227 Sequence data has been deposited at the European Genome-phenome Archive (EGA), which is hosted by the EBI and the CRG, under accession number EGAS00001001601 (8 previous PPGL samples) and EGAS00001003991 (22 new PPGL samples). ('EGAS00001003991', 'Var', (188, 203)) ('EGAS00001001601', 'Var', (142, 157)) ('PPGL', 'Chemical', '-', (170, 174)) ('EBI', 'Gene', (102, 105)) ('CRG', 'Gene', (114, 117)) ('CRG', 'Gene', '55636', (114, 117)) ('EBI', 'Gene', '6907', (102, 105)) ('PPGL', 'Chemical', '-', (212, 216)) 36407 32511227 Nine cases with no apparent disease-associated pathogenic mutation by sequencing where further analyzed for exon/gene deletions or duplications by MLPA in 6 genes; SDHA, SDHB, SDHC, SDHD, NF1, and VHL. ('SDHB', 'Gene', '6390', (170, 174)) ('SDHD', 'Gene', '6392', (182, 186)) ('VHL', 'Gene', (197, 200)) ('SDHA', 'Gene', (164, 168)) ('MLPA', 'Gene', (147, 151)) ('SDHB', 'Gene', (170, 174)) ('VHL', 'Gene', '7428', (197, 200)) ('NF1', 'Gene', (188, 191)) ('SDHC', 'Gene', (176, 180)) ('NF1', 'Gene', '4763', (188, 191)) ('SDHC', 'Gene', '6391', (176, 180)) ('SDHA', 'Gene', '6389', (164, 168)) ('duplications', 'Var', (131, 143)) ('SDHD', 'Gene', (182, 186)) 36408 32511227 MLPA was performed on tumor DNA using the following four SALSA MLPA kits; P081-D1 & P082-C2 (NF1), P226-D1 (SDHx), and P016-C2 (VHL) (MRC-Holland www.mrcholland.com). ('SDH', 'Gene', '6390', (108, 111)) ('NF1', 'Gene', '4763', (93, 96)) ('VHL', 'Gene', '7428', (128, 131)) ('tumor', 'Disease', 'MESH:D009369', (22, 27)) ('and P016-C2', 'Var', (115, 126)) ('tumor', 'Phenotype', 'HP:0002664', (22, 27)) ('SDH', 'Gene', (108, 111)) ('tumor', 'Disease', (22, 27)) ('VHL', 'Gene', (128, 131)) ('P081-D1 &', 'Var', (74, 83)) ('NF1', 'Gene', (93, 96)) 36410 32511227 The full coding sequence of MYO5B wild type (NM_001080467) and MYO5B sequences harboring the three point mutations c.1760T>C (p.L597P), c.4831G>A (p.G1611S) and c.4921C>T (p.R1641C) were synthesized and cloned into the pCMV6 vector, and tagged with Myc-DKK tag by Invitrogen GeneART (Thermo Fisher Scientific). ('p.G1611S', 'Mutation', 'rs748242455', (147, 155)) ('c.4831G>A', 'Mutation', 'rs748242455', (136, 145)) ('c.4921C>T', 'Var', (161, 170)) ('c.4831G>A', 'Var', (136, 145)) ('p.L597P', 'Mutation', 'rs750054708', (126, 133)) ('p.R1641C', 'Mutation', 'rs780999931', (172, 180)) ('c.4921C>T', 'Mutation', 'rs780999931', (161, 170)) ('c.1760T>C', 'Mutation', 'rs750054708', (115, 124)) ('c.1760T>C', 'Var', (115, 124)) ('Myc', 'Gene', '4609', (249, 252)) ('Myc', 'Gene', (249, 252)) 36411 32511227 Five vector constructs; pCMV6-Myc-DDK (empty vector), pCMV6-MYO5B-Myc-DDK (MYO5BWT), pCMV6-MYO5B_L587P-Myc-DDK (p.L587P), pCMV6-MYO5B_G1611S-Myc-DDK (p.G1611S), and pCMV6-MYO5B_R1646C-Myc-DDK (p.R1641C) were sub-cloned and verified by DNA Sanger sequencing (GeneArt Gene Synthesis, Invitrogen, ThemoFisher Scientific). ('p.G1611S', 'Mutation', 'rs748242455', (150, 158)) ('Myc', 'Gene', (30, 33)) ('R1646C', 'Mutation', 'p.R1646C', (177, 183)) ('p.L587P', 'Mutation', 'rs750054708', (112, 119)) ('Myc', 'Gene', '4609', (141, 144)) ('L587P', 'Mutation', 'rs750054708', (97, 102)) ('L587P', 'Mutation', 'rs750054708', (114, 119)) ('Myc', 'Gene', (66, 69)) ('Myc', 'Gene', '4609', (66, 69)) ('Myc', 'Gene', '4609', (103, 106)) ('Myc', 'Gene', (141, 144)) ('p.R1641C', 'Mutation', 'rs780999931', (193, 201)) ('Myc', 'Gene', (103, 106)) ('Myc', 'Gene', '4609', (184, 187)) ('Myc', 'Gene', '4609', (30, 33)) ('p.G1611S', 'Var', (150, 158)) ('Myc', 'Gene', (184, 187)) 36414 32511227 Five constructs per cell line were made; MYO5BWT, p.L587P, p.G1611S, p.R1641C, and empty vector. ('p.R1641C', 'Var', (69, 77)) ('p.G1611S', 'Var', (59, 67)) ('p.L587P', 'Mutation', 'rs750054708', (50, 57)) ('p.G1611S', 'Mutation', 'rs748242455', (59, 67)) ('p.R1641C', 'Mutation', 'rs780999931', (69, 77)) ('p.L587P', 'Var', (50, 57)) 36417 32511227 Western blot was performed using antibodies with ECL-detection (Supersignal West Maximum Fempto, Thermo Fisher Scientific) as follows: FLAG-DDK M2 mouse mAb (1:750, #F3165, Sigma Aldrich), GAPDH rabbit Ab (1:500, sc-25778, Santa Cruz Biotechnology), MYO5B Rabbit mAb (1:250, HPA040902, Atlas Antibodies), transferrin receptor (CD71) rabbit mAb (1:500, #13208, Cell Signaling Technology). ('1:750', 'Var', (158, 163)) ('mouse', 'Species', '10090', (147, 152)) ('CD71', 'Gene', (327, 331)) ('CD71', 'Gene', '22042', (327, 331)) 36429 32511227 Cells were subsequently incubated for 15 minutes in 20 mug/ml Alexa fluor conjugated 555 human transferrin (T35352, Thermo Fisher) and thereafter fixed for 15 minutes in 4% paraformaldehyde solution (HistoLab). ('T35352', 'Var', (108, 114)) ('human', 'Species', '9606', (89, 94)) ('paraformaldehyde', 'Chemical', 'MESH:C003043', (173, 189)) ('Alexa fluor', 'Chemical', '-', (62, 73)) ('transferrin', 'Gene', '7018', (95, 106)) ('transferrin', 'Gene', (95, 106)) 36433 32511227 Expression analysis was performed with Clariom S arrays for five constructs (empty vector, MYO5BWT, p.L587P, p.G1611S, and p.R1641C) at three time points of proliferation (24h, 48h, 72h) in duplicates by Eurofins Genomics (www.eurofinsgenomics.eu). ('p.R1641C', 'Mutation', 'rs780999931', (123, 131)) ('p.L587P', 'Var', (100, 107)) ('p.G1611S', 'Var', (109, 117)) ('p.G1611S', 'Mutation', 'rs748242455', (109, 117)) ('rat', 'Species', '10116', (164, 167)) ('p.R1641C', 'Var', (123, 131)) ('p.L587P', 'Mutation', 'rs750054708', (100, 107)) 36455 32435750 This makes it hard to come to the correct diagnosis prior to surgery, which may result in an unexpected intraoperative hypertensive crisis because of possible catecholamine excess produced by these lesions. ('result in', 'Reg', (80, 89)) ('lesions', 'Var', (198, 205)) ('catecholamine', 'Chemical', 'MESH:D002395', (159, 172)) ('catecholamine excess', 'MPA', (159, 179)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (119, 138)) ('hypertensive', 'Disease', 'MESH:D006973', (119, 131)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (159, 179)) ('hypertensive', 'Disease', (119, 131)) 36510 30997073 Paraganglioma of the tongue with SDHB gene mutation in a patient with Graves' disease We report a case of an apparently sporadic paraganglioma of the tongue with a germ-line mutation in a female patient with asymptomatic Graves' disease. ("Graves' disease", 'Disease', (221, 236)) ('SDHB', 'Gene', (33, 37)) ("Graves' disease", 'Phenotype', 'HP:0100647', (70, 85)) ("Graves' disease", 'Phenotype', 'HP:0100647', (221, 236)) ('patient', 'Species', '9606', (57, 64)) ('mutation', 'Var', (43, 51)) ('paraganglioma', 'Disease', (129, 142)) ('paraganglioma', 'Disease', 'MESH:D010235', (129, 142)) ('Paraganglioma of the tongue', 'Phenotype', 'HP:0100648', (0, 27)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('mutation', 'Var', (174, 182)) ('Paraganglioma of the tongue', 'Disease', (0, 27)) ('paraganglioma of the tongue', 'Phenotype', 'HP:0100648', (129, 156)) ('paraganglioma', 'Phenotype', 'HP:0002668', (129, 142)) ("Graves' disease", 'Disease', 'MESH:D006111', (70, 85)) ('SDHB', 'Gene', '6390', (33, 37)) ('patient', 'Species', '9606', (195, 202)) ("Graves' disease", 'Disease', 'MESH:D006111', (221, 236)) ("Graves' disease", 'Disease', (70, 85)) 36520 30997073 In addition, hereditary susceptibility also includes five familial PGLs syndromes caused by mutation in the succinate dehydrogenase genes (collectively SDHx) that can be screened by immunohistochemistry and identified by sequencing analysis.9, 10 SDHx mutations represent almost 30% of mutated PGLs. ('familial PGLs syndromes', 'Disease', (58, 81)) ('PGLs', 'Phenotype', 'HP:0002668', (67, 71)) ('succinate', 'Chemical', 'MESH:D019802', (108, 117)) ('PGLs', 'Phenotype', 'HP:0002668', (294, 298)) ('SDHx', 'Chemical', '-', (247, 251)) ('SDHx', 'Gene', (247, 251)) ('mutations', 'Var', (252, 261)) ('familial PGLs syndromes', 'Disease', 'MESH:D009386', (58, 81)) ('PGLs', 'Disease', (294, 298)) ('SDHx', 'Chemical', '-', (152, 156)) 36533 30997073 Immunohistochemistry and sequencing analysis for SDHx mutations were performed in another center using anti SDH B rabbit polyclonal antibody (Sigma-Aldrich Corp). ('SDH', 'Gene', '6390', (49, 52)) ('SDH', 'Gene', '6390', (108, 111)) ('rabbit', 'Species', '9986', (114, 120)) ('Sigma-Aldrich Corp', 'Disease', 'MESH:D014923', (142, 160)) ('mutations', 'Var', (54, 63)) ('Sigma-Aldrich Corp', 'Disease', (142, 160)) ('SDH', 'Gene', (49, 52)) ('SDHx', 'Chemical', '-', (49, 53)) ('SDH', 'Gene', (108, 111)) 36542 30997073 This result suggested the presence of a mutation in any of the SDHx genes but SDHA. ('mutation', 'Var', (40, 48)) ('presence', 'Reg', (26, 34)) ('SDHA', 'Gene', '6389', (78, 82)) ('SDHx', 'Gene', (63, 67)) ('SDHx', 'Chemical', '-', (63, 67)) ('SDHA', 'Gene', (78, 82)) 36543 30997073 Mutational analysis confirmed a c.689G>A/p.Arg230His mutation in SDHB gene. ('c.689G>A/p.Arg230His', 'Var', (32, 52)) ('confirmed', 'Reg', (20, 29)) ('SDHB', 'Gene', '6390', (65, 69)) ('c.689G>A', 'Mutation', 'rs587782604', (32, 40)) ('p.Arg230His', 'Mutation', 'rs587782604', (41, 52)) ('SDHB', 'Gene', (65, 69)) 36550 30997073 It was identified a germline mutation in SDHB gene that has been described in Mediterranean population carrying a 45% of malignancy risk.19 Germline mutations in SDHx are inherited in an autosomal dominant manner with an age-related penetrance.1, 7, 8 Genetic testing should be performed in all PGLs. ('mutations', 'Var', (149, 158)) ('malignancy', 'Disease', 'MESH:D009369', (121, 131)) ('SDHB', 'Gene', (41, 45)) ('PGLs', 'Phenotype', 'HP:0002668', (295, 299)) ('malignancy', 'Disease', (121, 131)) ('SDHB', 'Gene', '6390', (41, 45)) ('SDHx', 'Chemical', '-', (162, 166)) ('SDHx', 'Gene', (162, 166)) 36560 30997073 A potential link between mutated PGL (especially those of the head and neck) and thyroid gland dysfunction requires further investigation. ('thyroid gland dysfunction', 'Disease', 'MESH:D013959', (81, 106)) ('mutated', 'Var', (25, 32)) ('PGL', 'Protein', (33, 36)) ('thyroid gland dysfunction', 'Disease', (81, 106)) 36566 30997073 Our case illustrates, to the best of our knowledge, the first reported primary PGL of the tongue with a documented mutation in SDHB gene, in a patient with asymptomatic Graves' disease. ("Graves' disease", 'Disease', (169, 184)) ('patient', 'Species', '9606', (143, 150)) ('SDHB', 'Gene', '6390', (127, 131)) ("Graves' disease", 'Disease', 'MESH:D006111', (169, 184)) ('SDHB', 'Gene', (127, 131)) ('primary PGL of the tongue', 'Disease', (71, 96)) ('mutation', 'Var', (115, 123)) ("Graves' disease", 'Phenotype', 'HP:0100647', (169, 184)) 36571 30655972 In many of these tumors, several mutations are reported to occur in the genes of germline and/or somatic cells. ('tumors', 'Phenotype', 'HP:0002664', (17, 23)) ('tumors', 'Disease', (17, 23)) ('tumors', 'Disease', 'MESH:D009369', (17, 23)) ('man', 'Species', '9606', (3, 6)) ('mutations', 'Var', (33, 42)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) 36577 30655972 Next-generation sequencing revealed several gene mutations and copy number variations, including of fumarate hydratase (FH), neurofibromatosis type-1 (NF1) and RET. ('copy number variations', 'Var', (63, 85)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (125, 142)) ('mutations', 'Var', (49, 58)) ('neurofibromatosis type-1', 'Gene', (125, 149)) ('NF1', 'Gene', (151, 154)) ('RET', 'Gene', '5979', (160, 163)) ('fumarate hydratase', 'Gene', '2271', (100, 118)) ('FH', 'Gene', '2271', (120, 122)) ('NF1', 'Gene', '4763', (151, 154)) ('fumarate hydratase', 'Gene', (100, 118)) ('neurofibromatosis type-1', 'Gene', '4763', (125, 149)) ('RET', 'Gene', (160, 163)) 36582 30655972 In nonfamilial PCC/PGL tumors, 41% harbored mutations and one-fifth were in germline genes, including multiple mutations. ('PGL', 'Phenotype', 'HP:0002668', (19, 22)) ('PGL tumors', 'Disease', 'MESH:D010235', (19, 29)) ('harbored', 'Reg', (35, 43)) ('PCC', 'Gene', '1421', (15, 18)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('mutations', 'Var', (44, 53)) ('PGL tumors', 'Disease', (19, 29)) ('PCC', 'Gene', (15, 18)) ('tumors', 'Phenotype', 'HP:0002664', (23, 29)) 36586 30655972 The pathogenesis of most GISTs is a mutation in one of two receptor tyrosine kinase genes, kit and platelet-derived growth factor receptor alpha (PDGFRalpha). ('PDGFRalpha', 'Gene', '5156', (146, 156)) ('GISTs', 'Disease', (25, 30)) ('platelet-derived growth factor receptor alpha', 'Gene', '5156', (99, 144)) ('GIST', 'Phenotype', 'HP:0100723', (25, 29)) ('platelet-derived growth factor receptor alpha', 'Gene', (99, 144)) ('PDGFRalpha', 'Gene', (146, 156)) ('mutation', 'Var', (36, 44)) 36594 30655972 Somatic mutations (single nucleotide mutations, insertions, and deletions) and copy number variations (CNVs) were detected using statistical approaches in tumor and normal samples from the Ion Reporter software 5.0 tumor-normal workflow (Thermo Fisher Scientific). ('tumor', 'Disease', 'MESH:D009369', (155, 160)) ('tumor', 'Phenotype', 'HP:0002664', (155, 160)) ('tumor', 'Disease', 'MESH:D009369', (215, 220)) ('deletions', 'Var', (64, 73)) ('insertions', 'Var', (48, 58)) ('tumor', 'Disease', (155, 160)) ('tumor', 'Phenotype', 'HP:0002664', (215, 220)) ('tumor', 'Disease', (215, 220)) 36595 30655972 Recurrent genomic regions with CNVs were identified using copy numbers greater than 3 and less than 1 for gains and losses, respectively. ('gains', 'Disease', (106, 111)) ('copy numbers', 'Var', (58, 70)) ('losses', 'NegReg', (116, 122)) ('gains', 'Disease', 'MESH:D015430', (106, 111)) 36600 30655972 The laboratory findings on admission showed leukocytosis (1,380x106/l) with granulocytosis (1,303x106/l) and hypoalbuminemia (3.6 mg/dl). ('hypoalbuminemia', 'Phenotype', 'HP:0003073', (109, 124)) ('granulocytosis', 'Phenotype', 'HP:0032310', (76, 90)) ('hypoalbuminemia', 'Disease', (109, 124)) ('1,380x106/l', 'Var', (58, 69)) ('leukocytosis', 'Disease', 'MESH:D007964', (44, 56)) ('leukocytosis', 'Phenotype', 'HP:0001974', (44, 56)) ('1,303x106/l', 'Var', (92, 103)) ('granulocytosis', 'Disease', (76, 90)) ('leukocytosis', 'Disease', (44, 56)) ('hypoalbuminemia', 'Disease', 'MESH:D034141', (109, 124)) 36614 30655972 Immunohistochemical examination showed that the tumor cells were positive for Ki67 and p53 (Fig. ('tumor', 'Disease', (48, 53)) ('p53', 'Gene', (87, 90)) ('p53', 'Gene', '7157', (87, 90)) ('positive', 'Reg', (65, 73)) ('tumor', 'Disease', 'MESH:D009369', (48, 53)) ('tumor', 'Phenotype', 'HP:0002664', (48, 53)) ('Ki67', 'Var', (78, 82)) 36620 30655972 Semiconductor-based next-generation sequencing of 409 cancer-related genes showed both germline and somatic mutations and CNVs of genes. ('cancer', 'Disease', 'MESH:D009369', (54, 60)) ('CNVs of', 'Var', (122, 129)) ('cancer', 'Phenotype', 'HP:0002664', (54, 60)) ('cancer', 'Disease', (54, 60)) 36621 30655972 Table II shows that germline heterozygous variants in NF1 (p.Gln27His; c.81G>T) and RET (p.Asn437Lys: c.1311C>G) were found. ('p.Gln27His; c.81G>T', 'Var', (59, 78)) ('RET', 'Gene', (84, 87)) ('c.81G>T', 'Mutation', 'c.81G>T', (71, 78)) ('c.81G>T', 'Var', (71, 78)) ('p.Asn437Lys: c.1311C>G', 'Var', (89, 111)) ('NF1', 'Gene', (54, 57)) ('NF1', 'Gene', '4763', (54, 57)) ('p.Gln27His', 'Mutation', 'p.Q27H', (59, 69)) ('RET', 'Gene', '5979', (84, 87)) ('c.1311C>G', 'Mutation', 'rs1344280904', (102, 111)) ('p.Asn437Lys', 'Mutation', 'rs1344280904', (89, 100)) 36622 30655972 Moreover, somatic mutations in NF1 (p.Arg1306Gln; c.3917G>A) and FH (p.Ala104Thr; c.310G>A) were identified with frequencies of 29.4 and 28.6%, respectively. ('FH', 'Gene', '2271', (65, 67)) ('p.Arg1306Gln', 'Mutation', 'rs1306237220', (36, 48)) ('c.3917G>A', 'Mutation', 'rs1306237220', (50, 59)) ('p.Ala104Thr', 'Mutation', 'rs1303488878', (69, 80)) ('p.Ala104Thr; c.310G>A', 'Var', (69, 90)) ('c.3917G>A', 'Var', (50, 59)) ('NF1', 'Gene', (31, 34)) ('p.Arg1306Gln; c.3917G>A', 'Var', (36, 59)) ('NF1', 'Gene', '4763', (31, 34)) ('c.310G>A', 'Mutation', 'rs1303488878', (82, 90)) 36625 30655972 Genetic mutation profiling of this tumor demonstrated that the tumor had either germline or somatic mutations of NF1, RET, and FH, but not of SDHs, kit or PDGFRa, suggesting the tumor to be PGL, but not of GIST. ('PDGFRa', 'Gene', '5156', (155, 161)) ('PGL', 'Phenotype', 'HP:0002668', (190, 193)) ('tumor', 'Disease', (178, 183)) ('PDGFRa', 'Gene', (155, 161)) ('SDH', 'Gene', '6390', (142, 145)) ('RET', 'Gene', '5979', (118, 121)) ('tumor', 'Disease', (35, 40)) ('tumor', 'Disease', 'MESH:D009369', (178, 183)) ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('tumor', 'Disease', (63, 68)) ('NF1', 'Gene', '4763', (113, 116)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('SDH', 'Gene', (142, 145)) ('tumor', 'Phenotype', 'HP:0002664', (178, 183)) ('RET', 'Gene', (118, 121)) ('mutations', 'Var', (100, 109)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('NF1', 'Gene', (113, 116)) ('GIST', 'Phenotype', 'HP:0100723', (206, 210)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('FH', 'Gene', '2271', (127, 129)) 36640 30655972 In order to identify causal gene mutations for PCC/PGL without a syndromic presentation, next-generation sequencing might be a promising strategy. ('syndromic', 'Disease', (65, 74)) ('PCC', 'Gene', (47, 50)) ('syndromic', 'Disease', 'MESH:D013577', (65, 74)) ('mutations', 'Var', (33, 42)) ('PGL', 'Phenotype', 'HP:0002668', (51, 54)) ('PCC', 'Gene', '1421', (47, 50)) 36641 30655972 Among mutated driver genes for the induction of PGL in the present case, one must consider the possible role of the receptor tyrosine-kinase RET, which showed germline mutation and copy number gain in the tumor cells. ('receptor tyrosine-kinase', 'Gene', '5979', (116, 140)) ('RET', 'Gene', '5979', (141, 144)) ('tumor', 'Disease', 'MESH:D009369', (205, 210)) ('receptor tyrosine-kinase', 'Gene', (116, 140)) ('gain', 'PosReg', (193, 197)) ('copy number', 'Var', (181, 192)) ('germline', 'Var', (159, 167)) ('tumor', 'Disease', (205, 210)) ('RET', 'Gene', (141, 144)) ('PGL', 'Phenotype', 'HP:0002668', (48, 51)) ('tumor', 'Phenotype', 'HP:0002664', (205, 210)) 36648 30655972 Accumulation of multiple gene alterations including NF1, RET, and FH might be responsible for the malignant transformation of PGL in this case. ('NF1', 'Gene', (52, 55)) ('FH', 'Gene', '2271', (66, 68)) ('NF1', 'Gene', '4763', (52, 55)) ('responsible', 'Reg', (78, 89)) ('RET', 'Gene', (57, 60)) ('PGL', 'Phenotype', 'HP:0002668', (126, 129)) ('alterations', 'Var', (30, 41)) ('RET', 'Gene', '5979', (57, 60)) 36649 30655972 This might be supported by a report that metastatic phenotype and multiple tumors were significantly more frequent in PGL with FH mutations than in those without. ('PGL', 'Disease', (118, 121)) ('multiple tumors', 'Disease', (66, 81)) ('multiple tumors', 'Disease', 'MESH:D009369', (66, 81)) ('frequent', 'Reg', (106, 114)) ('mutations', 'Var', (130, 139)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('more', 'PosReg', (101, 105)) ('tumors', 'Phenotype', 'HP:0002664', (75, 81)) ('PGL', 'Phenotype', 'HP:0002668', (118, 121)) ('FH', 'Gene', '2271', (127, 129)) ('metastatic phenotype', 'CPA', (41, 61)) 36703 29578356 Stimulation of these receptors causes vasoconstriction and an increase in blood pressure, which may predispose the patient to bleeding from a vascular anomaly as in the present case. ('blood pressure', 'MPA', (74, 88)) ('vasoconstriction', 'MPA', (38, 54)) ('increase in blood pressure', 'Phenotype', 'HP:0032263', (62, 88)) ('Stimulation', 'Var', (0, 11)) ('vascular anomaly', 'Disease', 'MESH:D000783', (142, 158)) ('increase', 'PosReg', (62, 70)) ('patient', 'Species', '9606', (115, 122)) ('vascular anomaly', 'Disease', (142, 158)) 36711 29628290 Specific driver mutations correlated with lower (CTNNB1, NRAS, or IDH1) or higher (BRAF, TP53, or CASP8) leukocyte levels across all cancers. ('cancers', 'Disease', 'MESH:D009369', (133, 140)) ('TP53', 'Gene', '7157', (89, 93)) ('IDH1', 'Gene', '3417', (66, 70)) ('CTNNB1', 'Gene', '1499', (49, 55)) ('lower', 'NegReg', (42, 47)) ('NRAS', 'Gene', (57, 61)) ('mutations', 'Var', (16, 25)) ('leukocyte levels', 'MPA', (105, 121)) ('higher', 'PosReg', (75, 81)) ('cancers', 'Phenotype', 'HP:0002664', (133, 140)) ('cancers', 'Disease', (133, 140)) ('CTNNB1', 'Gene', (49, 55)) ('BRAF', 'Gene', '673', (83, 87)) ('cancer', 'Phenotype', 'HP:0002664', (133, 139)) ('BRAF', 'Gene', (83, 87)) ('CASP8', 'Gene', '841', (98, 103)) ('TP53', 'Gene', (89, 93)) ('NRAS', 'Gene', '4893', (57, 61)) ('IDH1', 'Gene', (66, 70)) ('CASP8', 'Gene', (98, 103)) 36712 29628290 Multiple control modalities of the intracellular and extracellular networks (transcription, microRNAs, copy number and epigenetic processes) were involved in tumor-immune cell interactions, both across and within immune subtypes. ('tumor', 'Disease', (158, 163)) ('tumor', 'Disease', 'MESH:D009369', (158, 163)) ('copy', 'Var', (103, 107)) ('involved', 'Reg', (146, 154)) ('tumor', 'Phenotype', 'HP:0002664', (158, 163)) 36720 29628290 Antibodies against CTLA-4, PD-1, and PD-L1 are effective in treating a variety of malignancies. ('Antibodies', 'Var', (0, 10)) ('PD-L1', 'Gene', (37, 42)) ('CTLA-4', 'Gene', '1493', (19, 25)) ('malignancies', 'Disease', (82, 94)) ('PD-1', 'Gene', (27, 31)) ('effective', 'Reg', (47, 56)) ('PD-1', 'Gene', '5133', (27, 31)) ('PD-L1', 'Gene', '29126', (37, 42)) ('CTLA-4', 'Gene', (19, 25)) ('malignancies', 'Disease', 'MESH:D009369', (82, 94)) 36735 29628290 The six resulting clusters "Immune Subtypes", C1-C6 (with 2416, 2591, 2397, 1157, 385 and 180 cases, respectively) were characterized by a distinct distribution of scores over the five representative signatures (Figure 1A, bottom panel), and showed distinct immune signatures based on the dominant sample characteristics of their tumor samples (Figure 1B-C). ('C1-C6', 'Var', (46, 51)) ('tumor', 'Phenotype', 'HP:0002664', (330, 335)) ('tumor', 'Disease', (330, 335)) ('tumor', 'Disease', 'MESH:D009369', (330, 335)) 36745 29628290 IDH mutations were enriched in C5 over C4 (80% of IDH mutations, p<2x10-16, Fisher's exact test), suggesting an association of IDH-mutations with favorable immune composition. ('association', 'Interaction', (112, 123)) ('IDH', 'Gene', (127, 130)) ('IDH', 'Gene', '3417', (127, 130)) ('IDH', 'Gene', (0, 3)) ('IDH', 'Gene', '3417', (0, 3)) ('mutations', 'Var', (54, 63)) ('IDH', 'Gene', (50, 53)) ('mutations', 'Var', (4, 13)) ('IDH', 'Gene', '3417', (50, 53)) 36758 29628290 The spatial fraction of tumor regions with tumor infiltrating lymphocytes (TILs), estimated by analysis of digitized TCGA H&E stained slides, varied by immune subtype, with C2 the highest (p<10-16, Figure 2D). ('tumor', 'Phenotype', 'HP:0002664', (24, 29)) ('tumor', 'Disease', (24, 29)) ('with', 'Var', (168, 172)) ('H&E', 'Chemical', '-', (122, 125)) ('tumor', 'Disease', 'MESH:D009369', (43, 48)) ('tumor', 'Disease', 'MESH:D009369', (24, 29)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('tumor', 'Disease', (43, 48)) 36771 29628290 The immune infiltrate was related to measures of DNA damage, including copy number variation (CNV) burden (both in terms of number of segments and fraction of genome alterations), aneuploidy, loss of heterozygosity (LOH), homologous recombination deficiency (HRD), and intratumor heterogeneity (ITH) (Figure 4A). ('aneuploidy', 'Disease', (180, 190)) ('loss of heterozygosity', 'Var', (192, 214)) ('copy number variation', 'MPA', (71, 92)) ('homologous recombination deficiency', 'Disease', (222, 257)) ('tumor', 'Disease', 'MESH:D009369', (274, 279)) ('HRD', 'Disease', (259, 262)) ('aneuploidy', 'Disease', 'MESH:D000782', (180, 190)) ('tumor', 'Phenotype', 'HP:0002664', (274, 279)) ('tumor', 'Disease', (274, 279)) ('HRD', 'Disease', 'None', (259, 262)) ('men', 'Species', '9606', (137, 140)) 36772 29628290 LF correlated negatively with CNV segment burden, with strongest correlation in C6 and C2, and positively with aneuploidy, LOH, HRD, and mutation load, particularly in C3. ('HRD', 'Disease', (128, 131)) ('LOH', 'Var', (123, 126)) ('aneuploidy', 'Disease', (111, 121)) ('negatively', 'NegReg', (14, 24)) ('men', 'Species', '9606', (37, 40)) ('HRD', 'Disease', 'None', (128, 131)) ('aneuploidy', 'Disease', 'MESH:D000782', (111, 121)) ('CNV segment burden', 'MPA', (30, 48)) ('mutation load', 'Var', (137, 150)) 36773 29628290 Chromosome 1p (including TNFRS9 and VTCN1) amplification associated with higher LF, while its deletion did the opposite. ('VTCN1', 'Gene', '79679', (36, 41)) ('TNFRS9', 'Gene', (25, 31)) ('amplification', 'Var', (43, 56)) ('VTCN1', 'Gene', (36, 41)) ('higher', 'PosReg', (73, 79)) 36775 29628290 Amplification of chr2, 20q, and 22q (including CTLA4, CD40, and ADORA2 respectively), and deletions of 5q, 9p, and chr19 (including IL13 and IL4, IFNA1 and IFNA2, and ICAM1 respectively) associated with changes in macrophage polarity (Figure S4A). ('macrophage polarity', 'CPA', (214, 233)) ('IFNA1', 'Gene', '3439', (146, 151)) ('ADORA2', 'Gene', (64, 70)) ('chr19', 'Gene', (115, 120)) ('CTLA4', 'Gene', (47, 52)) ('chr2', 'Gene', (17, 21)) ('IL13', 'Gene', (132, 136)) ('ICAM1', 'Gene', (167, 172)) ('deletions', 'Var', (90, 99)) ('ICAM1', 'Gene', '3383', (167, 172)) ('IFNA2', 'Gene', (156, 161)) ('CD40', 'Gene', (54, 58)) ('IFNA2', 'Gene', '3440', (156, 161)) ('associated', 'Reg', (187, 197)) ('changes', 'Reg', (203, 210)) ('ADORA2', 'Gene', '135', (64, 70)) ('IFNA1', 'Gene', (146, 151)) ('CD40', 'Gene', '958', (54, 58)) ('IL4', 'Gene', '3565', (141, 144)) ('IL4', 'Gene', (141, 144)) ('IL13', 'Gene', '3596', (132, 136)) ('CTLA4', 'Gene', '1493', (47, 52)) 36776 29628290 IL-13 influences macrophage polarization, implying a possible basis for our observation that IL13 deletions associated with altered M0 macrophage fractions. ('IL-13', 'Gene', '3596', (0, 5)) ('influences', 'Reg', (6, 16)) ('IL13', 'Gene', (93, 97)) ('IL13', 'Gene', '3596', (93, 97)) ('macrophage polarization', 'CPA', (17, 40)) ('IL-13', 'Gene', (0, 5)) ('deletions', 'Var', (98, 107)) 36779 29628290 We correlated mutations in 299 cancer driver genes with immune subtypes, and found 33 significant associations (q<0.1) (Figure 4C, Table S2). ('cancer', 'Phenotype', 'HP:0002664', (31, 37)) ('cancer', 'Disease', 'MESH:D009369', (31, 37)) ('associations', 'Interaction', (98, 110)) ('cancer', 'Disease', (31, 37)) ('mutations', 'Var', (14, 23)) 36780 29628290 C1 was enriched in mutations in driver genes, such as TP53, PIK3CA, PTEN or KRAS. ('PIK3CA', 'Gene', (60, 66)) ('KRAS', 'Gene', (76, 80)) ('PIK3CA', 'Gene', '5290', (60, 66)) ('mutations', 'Var', (19, 28)) ('KRAS', 'Gene', '3845', (76, 80)) ('PTEN', 'Gene', (68, 72)) ('TP53', 'Gene', '7157', (54, 58)) ('PTEN', 'Gene', '5728', (68, 72)) ('TP53', 'Gene', (54, 58)) 36782 29628290 C3 was enriched in BRAF, CDH1 and PBRM1 mutations, a finding of note since patients with PBRM1 mutations respond particularly well to IM therapy. ('BRAF', 'Gene', '673', (19, 23)) ('CDH1', 'Gene', '999', (25, 29)) ('BRAF', 'Gene', (19, 23)) ('PBRM1', 'Gene', (89, 94)) ('PBRM1', 'Gene', (34, 39)) ('PBRM1', 'Gene', '55193', (89, 94)) ('PBRM1', 'Gene', '55193', (34, 39)) ('patients', 'Species', '9606', (75, 83)) ('mutations', 'Var', (40, 49)) ('mutations', 'Var', (95, 104)) ('CDH1', 'Gene', (25, 29)) 36783 29628290 C4 was enriched in CTNNB1, EGFR, and IDH1 mutations. ('CTNNB1', 'Gene', (19, 25)) ('EGFR', 'Gene', '1956', (27, 31)) ('EGFR', 'Gene', (27, 31)) ('IDH1', 'Gene', (37, 41)) ('CTNNB1', 'Gene', '1499', (19, 25)) ('IDH1', 'Gene', '3417', (37, 41)) ('mutations', 'Var', (42, 51)) 36785 29628290 C6 only showed an enrichment in KRAS G12 mutations. ('mutations', 'Var', (41, 50)) ('men', 'Species', '9606', (24, 27)) ('KRAS', 'Gene', (32, 36)) ('KRAS', 'Gene', '3845', (32, 36)) 36786 29628290 Mutations in 23 driver genes associated with increased LF either in specific tumor types or across them, including TP53, HLA-B, BRAF, PTEN, NF1, APC and CASP8. ('BRAF', 'Gene', '673', (128, 132)) ('HLA-B', 'Gene', '3106', (121, 126)) ('HLA-B', 'Gene', (121, 126)) ('TP53', 'Gene', '7157', (115, 119)) ('PTEN', 'Gene', '5728', (134, 138)) ('tumor type', 'Disease', (77, 87)) ('NF1', 'Gene', (140, 143)) ('Mutations', 'Var', (0, 9)) ('TP53', 'Gene', (115, 119)) ('APC', 'Disease', 'MESH:D011125', (145, 148)) ('tumor type', 'Disease', 'MESH:D009369', (77, 87)) ('NF1', 'Gene', '4763', (140, 143)) ('CASP8', 'Gene', (153, 158)) ('tumor', 'Phenotype', 'HP:0002664', (77, 82)) ('CASP8', 'Gene', '841', (153, 158)) ('APC', 'Disease', (145, 148)) ('PTEN', 'Gene', (134, 138)) ('BRAF', 'Gene', (128, 132)) 36787 29628290 Twelve other events were associated with lower LF, including the IDH1 R132H mutation, GATA3, KRAS, NRAS, CTNNB1 and NOTCH1 (Figure 4D). ('IDH1', 'Gene', '3417', (65, 69)) ('GATA3', 'Gene', (86, 91)) ('R132H', 'Var', (70, 75)) ('KRAS', 'Gene', (93, 97)) ('NOTCH1', 'Gene', '4851', (116, 122)) ('NOTCH1', 'Gene', (116, 122)) ('R132H', 'Mutation', 'rs121913500', (70, 75)) ('GATA3', 'Gene', '2625', (86, 91)) ('lower', 'NegReg', (41, 46)) ('KRAS', 'Gene', '3845', (93, 97)) ('CTNNB1', 'Gene', '1499', (105, 111)) ('NRAS', 'Gene', (99, 103)) ('NRAS', 'Gene', '4893', (99, 103)) ('IDH1', 'Gene', (65, 69)) ('CTNNB1', 'Gene', (105, 111)) 36789 29628290 PI3K, NOTCH and RTK/RAS pathway disruptions showed variable, tumor type specific effects on immune factors, while TGF-beta pathway disruptions more consistently associated with lower LF (most prominently in C2 and C6; Figure S4C), higher eosinophils (C2), and increased macrophages. ('lower', 'NegReg', (177, 182)) ('TGF-beta', 'Gene', '7040', (114, 122)) ('disruptions', 'Var', (131, 142)) ('disruptions', 'Var', (32, 43)) ('RTK/RAS pathway', 'Gene', (16, 31)) ('increased', 'PosReg', (260, 269)) ('eosinophils', 'MPA', (238, 249)) ('higher', 'PosReg', (231, 237)) ('TGF-beta', 'Gene', (114, 122)) ('tumor type', 'Disease', (61, 71)) ('eosin', 'Chemical', 'MESH:D004801', (238, 243)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('tumor type', 'Disease', 'MESH:D009369', (61, 71)) ('macrophages', 'CPA', (270, 281)) 36791 29628290 Thus, TGF-beta pathway disruption has context-dependent effects on LF, but may promote increased macrophages, particularly M1. ('TGF-beta', 'Gene', (6, 14)) ('disruption', 'Var', (23, 33)) ('macrophages', 'CPA', (97, 108)) ('promote increased', 'PosReg', (79, 96)) ('TGF-beta', 'Gene', '7040', (6, 14)) 36797 29628290 No single cis-eQTL significantly correlated with PD-L1 expression, although the SNP rs822337, approximately 1KB upstream of CD274 transcription start, correlated weakly (p=0.074;1.3x10-4 unadjusted; Figure S4G). ('CD274', 'Gene', (124, 129)) ('PD-L1', 'Gene', '29126', (49, 54)) ('CD274', 'Gene', '29126', (124, 129)) ('rs822337', 'Var', (84, 92)) ('PD-L1', 'Gene', (49, 54)) ('rs822337', 'Mutation', 'rs822337', (84, 92)) 36798 29628290 Lymphocyte fractions tended to be lower in people of Asian ancestry, particularly in UCEC and BLCA (Figure S4H). ('BLCA', 'Disease', (94, 98)) ('lower', 'NegReg', (34, 39)) ('Asian ancestry', 'Var', (53, 67)) ('Lymphocyte fractions', 'CPA', (0, 20)) ('UCEC', 'Disease', (85, 89)) ('people', 'Species', '9606', (43, 49)) ('BLCA', 'Chemical', '-', (94, 98)) 36799 29628290 Peptides predicted to bind with MHC proteins (pMHCs) and induce antitumor adaptive immunity were identified from SNV and indel mutations. ('tumor', 'Disease', (68, 73)) ('MHC proteins', 'Protein', (32, 44)) ('indel mutations', 'Var', (121, 136)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('bind', 'Interaction', (22, 26)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('induce', 'PosReg', (57, 63)) 36801 29628290 Neoantigen load also associated with higher content of CD8 T cells, M1 macrophages, and CD4 memory T cells, and lower Tregs, mast, dendritic, and memory B cells in multiple tumor types (Figure S4K). ('content', 'MPA', (44, 51)) ('CD8', 'Gene', '925', (55, 58)) ('higher', 'PosReg', (37, 43)) ('CD4 memory T cells', 'CPA', (88, 106)) ('tumor type', 'Disease', (173, 183)) ('tumor', 'Phenotype', 'HP:0002664', (173, 178)) ('tumor type', 'Disease', 'MESH:D009369', (173, 183)) ('CD8', 'Gene', (55, 58)) ('Neoantigen load', 'Var', (0, 15)) ('multiple tumor', 'Disease', 'MESH:D009369', (164, 178)) ('multiple tumor', 'Disease', (164, 178)) ('Tregs', 'CPA', (118, 123)) ('lower', 'NegReg', (112, 117)) 36809 29628290 In a regression model of all tumors, high load of each virus type associated with immune features (Figure S5C, cancer-type adjusted). ('tumors', 'Disease', (29, 35)) ('cancer', 'Phenotype', 'HP:0002664', (111, 117)) ('immune', 'Disease', (82, 88)) ('associated', 'Reg', (66, 76)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('tumors', 'Phenotype', 'HP:0002664', (29, 35)) ('tumors', 'Disease', 'MESH:D009369', (29, 35)) ('cancer', 'Disease', (111, 117)) ('cancer', 'Disease', 'MESH:D009369', (111, 117)) ('high load', 'Var', (37, 46)) 36828 29628290 CD40 (Figure 6C), IL10 and IDO1, inversely correlated with gene expression, suggesting epigenetic silencing. ('CD40', 'Gene', (0, 4)) ('IDO1', 'Gene', (27, 31)) ('IL10', 'Gene', (18, 22)) ('IL10', 'Gene', '3586', (18, 22)) ('correlated', 'Reg', (43, 53)) ('gene expression', 'MPA', (59, 74)) ('epigenetic silencing', 'Var', (87, 107)) ('IDO1', 'Gene', '3620', (27, 31)) ('CD40', 'Gene', '958', (0, 4)) 36831 29628290 In particular, IMs SLAMF7, SELP, TNFSF4 (OX40L), IL10, and CD40 were amplified less frequently in C5 relative to all samples, while TGFB1, KIR2DL1, and KIR2DL3 deletions were enriched in C5 (Figure 6D), consistent with our observation of lower immune infiltration with TGFB1 deletion (Figure S4A). ('CD40', 'Gene', (59, 63)) ('IL10', 'Gene', '3586', (49, 53)) ('TGFB1', 'Gene', '7040', (269, 274)) ('TGFB1', 'Gene', (269, 274)) ('SELP', 'Gene', '6403', (27, 31)) ('CD40', 'Gene', '958', (59, 63)) ('TNFSF4', 'Gene', '7292', (33, 39)) ('SELP', 'Gene', (27, 31)) ('TGFB1', 'Gene', '7040', (132, 137)) ('deletion', 'Var', (275, 283)) ('KIR2DL1', 'Gene', '3802', (139, 146)) ('TGFB1', 'Gene', (132, 137)) ('OX40L', 'Gene', (41, 46)) ('KIR2DL3', 'Gene', (152, 159)) ('TNFSF4', 'Gene', (33, 39)) ('KIR2DL3', 'Gene', '3804', (152, 159)) ('lower', 'NegReg', (238, 243)) ('IL10', 'Gene', (49, 53)) ('SLAMF7', 'Gene', '57823', (19, 25)) ('KIR2DL1', 'Gene', (139, 146)) ('OX40L', 'Gene', '7292', (41, 46)) ('SLAMF7', 'Gene', (19, 25)) 36845 29628290 Some T cell associated ligands were subtype specific, such as CD276 (C2, C6), IL1B (C6), and VEGFB (C4). ('VEGFB', 'Gene', '7423', (93, 98)) ('IL1B', 'Gene', (78, 82)) ('VEGFB', 'Gene', (93, 98)) ('IL1B', 'Gene', '3553', (78, 82)) ('CD276', 'Var', (62, 67)) 36850 29628290 Somatic alterations in AKAP9, HRAS, KRAS and PREX2 were inferred to modulate the activity of IMs according to both the MR- and SYGNAL-PanImmune, a significant overlap (p=1.6x10-7, Fisher's exact test). ('HRAS', 'Gene', (30, 34)) ('PREX2', 'Gene', (45, 50)) ('alterations', 'Var', (8, 19)) ('KRAS', 'Gene', (36, 40)) ('modulate', 'Reg', (68, 76)) ('KRAS', 'Gene', '3845', (36, 40)) ('AKAP9', 'Gene', '10142', (23, 28)) ('activity', 'MPA', (81, 89)) ('AKAP9', 'Gene', (23, 28)) ('HRAS', 'Gene', '3265', (30, 34)) ('PREX2', 'Gene', '80243', (45, 50)) 36855 29628290 Conversely, causal mutations shared across tumor types may associate with different tumor-specific downstream regulators. ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('tumor', 'Disease', 'MESH:D009369', (43, 48)) ('mutations', 'Var', (19, 28)) ('tumor type', 'Disease', (43, 53)) ('tumor', 'Disease', (84, 89)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('tumor type', 'Disease', 'MESH:D009369', (43, 53)) ('tumor', 'Disease', (43, 48)) ('associate', 'Reg', (59, 68)) 36860 29628290 C3 was regulated by KLF15 and miR-141-3p. ('KLF15', 'Gene', (20, 25)) ('miR-141-3p', 'Var', (30, 40)) ('KLF15', 'Gene', '28999', (20, 25)) 36880 29628290 For example, KRAS mutations were enriched in C1 and but infrequent in C5, suggesting that mutations in driver oncogenes alter pathways that affect immune cells. ('mutations', 'Var', (90, 99)) ('alter', 'Reg', (120, 125)) ('pathways', 'Pathway', (126, 134)) ('affect', 'Reg', (140, 146)) ('KRAS', 'Gene', (13, 17)) ('KRAS', 'Gene', '3845', (13, 17)) ('mutations', 'Var', (18, 27)) 36881 29628290 Driver mutations such as TP53, by inducing genomic instability, may alter the immune landscape via the generation of neoantigens. ('inducing', 'Reg', (34, 42)) ('TP53', 'Gene', (25, 29)) ('alter', 'Reg', (68, 73)) ('genomic instability', 'MPA', (43, 62)) ('immune landscape', 'MPA', (78, 94)) ('TP53', 'Gene', '7157', (25, 29)) ('neoantigens', 'MPA', (117, 128)) ('mutations', 'Var', (7, 16)) 36882 29628290 Our findings confirmed previous work showing that mutations in BRAF enhance the immune infiltrate while those in IDH1 diminish it. ('diminish', 'NegReg', (118, 126)) ('immune infiltrate', 'CPA', (80, 97)) ('mutations', 'Var', (50, 59)) ('IDH1', 'Gene', (113, 117)) ('IDH1', 'Gene', '3417', (113, 117)) ('BRAF', 'Gene', '673', (63, 67)) ('BRAF', 'Gene', (63, 67)) ('enhance', 'PosReg', (68, 75)) 36890 29628290 Predicted intracellular networks implied that seven immune related TFs(including interferon and STAT-family transcription factors) may play an active role in transcriptional events related to leukocyte infiltration, and that mutations in six genes (including Ras-family proteins) may influence immune infiltration. ('influence', 'Reg', (284, 293)) ('STAT', 'Disease', (96, 100)) ('mutations', 'Var', (225, 234)) ('immune infiltration', 'CPA', (294, 313)) ('STAT', 'Disease', 'None', (96, 100)) 36958 29628290 Comparing functional annotations of these clusters, we found that overlap to be reflected in the concordant distribution of mean scores of IFN-gamma, TGF-beta, mutation load and overall leukocyte infiltrate among the overlapping clusters. ('IFN-gamma', 'Gene', '3458', (139, 148)) ('IFN-gamma', 'Gene', (139, 148)) ('TGF-beta', 'Gene', '7040', (150, 158)) ('mutation load', 'Var', (160, 173)) ('TGF-beta', 'Gene', (150, 158)) 36988 29628290 All clonality calls for quantifying intratumoral heterogeneity (ITH) were also determined by ABSOLUTE, which models tumor copy number alterations and mutations as mixtures of subclonal and clonal components of varying ploidy. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('tumor', 'Disease', (41, 46)) ('tumor', 'Disease', 'MESH:D009369', (116, 121)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('mutations', 'Var', (150, 159)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) ('tumor', 'Disease', (116, 121)) 36990 29628290 Scores for copy number burden, aneuploidy, loss of heterozygosity, and homologous recombination deficiency (HRD) were derived. ('aneuploidy', 'Disease', (31, 41)) ('aneuploidy', 'Disease', 'MESH:D000782', (31, 41)) ('HRD', 'Disease', 'None', (108, 111)) ('copy number burden', 'Var', (11, 29)) ('loss of heterozygosity', 'Var', (43, 65)) ('HRD', 'Disease', (108, 111)) 36991 29628290 Copy number burden scores frac_altered and n_segs ("fraction altered", and "number of segments", respectively) represent the fraction of bases deviating from baseline ploidy (defined as above 0.1 or below - 0.1 in log2 relative copy number (CN) space), and the total number of segments in each sample's copy number profile, respectively. ('men', 'Species', '9606', (89, 92)) ('deviating', 'NegReg', (143, 152)) ('frac_altered', 'Var', (26, 38)) ('men', 'Species', '9606', (280, 283)) 36992 29628290 LOH_n_seg and LOH_frac_altered are the number of segments with LOH events and fraction of bases with LOH events, respectively. ('LOH_n_seg', 'Var', (0, 9)) ('men', 'Species', '9606', (52, 55)) ('LOH_frac_altered', 'Var', (14, 30)) 36993 29628290 HRD score is a measure quantifying defects in homologous recombination that sums 3 separate metrics of genomic scarring: large (>15 Mb) non-arm-level regions with LOH, large-scale state transitions (breaks between adjacent segments of >10 Mb), and subtelomeric regions with allelic imbalance. ('imbalance', 'Phenotype', 'HP:0002172', (282, 291)) ('HRD', 'Disease', 'None', (0, 3)) ('scarring', 'Phenotype', 'HP:0100699', (111, 119)) ('defects', 'Var', (35, 42)) ('HRD', 'Disease', (0, 3)) ('LOH', 'NegReg', (163, 166)) ('men', 'Species', '9606', (226, 229)) 36994 29628290 Aneuploidy scores were calculated as the sum total of amplified or deleted (collectively "altered") arms. ('deleted', 'Var', (67, 74)) ('Aneuploidy', 'Disease', 'MESH:D000782', (0, 10)) ('Aneuploidy', 'Disease', (0, 10)) 36995 29628290 To call arm alterations, sample chromosome arms were first stratified by sample tumor type, type of alteration being tested (amplification or deletion), and chromosome arm (1p, 1q, etc.). ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('alterations', 'Var', (12, 23)) ('tumor type', 'Disease', 'MESH:D009369', (80, 90)) ('tumor type', 'Disease', (80, 90)) ('deletion', 'Var', (142, 150)) 37001 29628290 Furthermore, for each gene, we similarly computed significances of differences of CIBERSORT-estimated relative immune cell subtype levels from their expected levels first in "amplified" and then in "deleted" samples in order to identify the effects of copy number amplification and deletion respectively on immune infiltrate composition while controlling for cancer disease type. ('cancer disease', 'Disease', 'MESH:D009369', (359, 373)) ('deletion', 'Var', (282, 290)) ('effects', 'Reg', (241, 248)) ('cancer', 'Phenotype', 'HP:0002664', (359, 365)) ('cancer disease', 'Disease', (359, 373)) ('copy number amplification', 'Var', (252, 277)) 37002 29628290 Contributors: Galen Gao, Andrew Cherniack We focused our analysis on genes identified as drivers by the TCGA PanCancer Atlas Driver Mutation Working Group (the CGAT list; TCGA Research Network, "Comprehensive Discovery and Characterization of Driver Genes and Mutations in Human Cancers", unpublished data) that were identified as 1) having 10 or more mutations overall and 2) mutated in two or more tissues. ('CGAT', 'Gene', (160, 164)) ('Human', 'Species', '9606', (273, 278)) ('Cancer', 'Disease', 'MESH:D009369', (112, 118)) ('Cancer', 'Disease', (112, 118)) ('Cancer', 'Phenotype', 'HP:0002664', (112, 118)) ('mutations', 'Var', (352, 361)) ('Cancer', 'Phenotype', 'HP:0002664', (279, 285)) ('Cancers', 'Disease', (279, 286)) ('Cancer', 'Disease', (279, 285)) ('Cancers', 'Disease', 'MESH:D009369', (279, 286)) ('Cancers', 'Phenotype', 'HP:0002664', (279, 286)) ('Cancer', 'Disease', 'MESH:D009369', (279, 285)) ('CGAT', 'Gene', '6570', (160, 164)) 37005 29628290 Contributor: Eduard Porta Pardo We used domainXplorer to identify driver genes and mutations that correlate with the leukocyte fraction of the tumor sample. ('tumor', 'Disease', 'MESH:D009369', (143, 148)) ('mutations', 'Var', (83, 92)) ('tumor', 'Disease', (143, 148)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) 37006 29628290 The algorithm uses a linear model that takes into account potential biases caused by differences in the immune responses between the tissues of origin of the tumors, the gender of the patient, the total number of missense mutations in the sample or the patient's age as covariates. ('tumors', 'Disease', (158, 164)) ('tumors', 'Phenotype', 'HP:0002664', (158, 164)) ('patient', 'Species', '9606', (253, 260)) ('tumors', 'Disease', 'MESH:D009369', (158, 164)) ('missense mutations', 'Var', (213, 231)) ('tumor', 'Phenotype', 'HP:0002664', (158, 163)) ('patient', 'Species', '9606', (184, 191)) 37010 29628290 For each pathway, samples from each of 30 tumor types were divided into two groups of altered and intact cases based on acquisition of non-silent or frameshift mutations, heterozygous or homozygous deletions, or amplifications, in at least one member of the pathway. ('tumor type', 'Disease', (42, 52)) ('amplifications', 'Var', (212, 226)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) ('tumor type', 'Disease', 'MESH:D009369', (42, 52)) 37020 29628290 To perform association analyses with single nucleotide polymorphisms (SNPs) at the PDL1 locus, we imputed the genotype data using the Haplotype Reference Consortium as a reference. ('PDL1', 'Gene', '29126', (83, 87)) ('single nucleotide polymorphisms', 'Var', (37, 68)) ('PDL1', 'Gene', (83, 87)) 37029 29628290 Variation in sequencing coverage and tumor purity require careful consideration in order to mitigate the risk of impacting mutation calls and on pMHC, and prior to pMHC calling, sequencing data was subjected to rigorous harmonization efforts, performed by the PanCancer MC3 Consortium. ('Cancer', 'Disease', (263, 269)) ('tumor', 'Disease', 'MESH:D009369', (37, 42)) ('impacting', 'Reg', (113, 122)) ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('tumor', 'Disease', (37, 42)) ('Cancer', 'Phenotype', 'HP:0002664', (263, 269)) ('mutation calls', 'Var', (123, 137)) ('Cancer', 'Disease', 'MESH:D009369', (263, 269)) 37056 29628290 Using output from a PanCan GISTIC2.0 run on ISAR-corrected Affymetrix genome-wide human SNP6.0 array data, deep amplifications, shallow amplifications, non-alterations, shallow deletions, and deep deletions of each immunomodulator gene were called as described in "Genomic Correlations with Immune Phenotype" above for 8461 tumors that both were immune subtyped and had ABSOLUTE purity and ploidy calls. ('tumor', 'Phenotype', 'HP:0002664', (324, 329)) ('non-alterations', 'Var', (152, 167)) ('human', 'Species', '9606', (82, 87)) ('tumors', 'Disease', (324, 330)) ('tumors', 'Phenotype', 'HP:0002664', (324, 330)) ('shallow deletions', 'Var', (169, 186)) ('tumors', 'Disease', 'MESH:D009369', (324, 330)) ('deep deletions', 'Var', (192, 206)) ('shallow amplifications', 'Var', (128, 150)) 37072 29628290 Mutation or copy-number events identified by the domainXplorer algorithm were tested for statistical association with the 32 cMRs identified, using the DIGGIT algorithm (above), and retained if associated with one or more of the 32 cMRs in at least one tumor-specific context. ('tumor', 'Disease', 'MESH:D009369', (253, 258)) ('tumor', 'Phenotype', 'HP:0002664', (253, 258)) ('tumor', 'Disease', (253, 258)) ('copy-number', 'Var', (12, 23)) 37124 29644036 Our patient and his father were found to have a mutation in the SDHA gene. ('SDHA', 'Gene', (64, 68)) ('mutation', 'Var', (48, 56)) ('patient', 'Species', '9606', (4, 11)) ('SDHA', 'Gene', '6389', (64, 68)) 37181 29108378 As shown in Table 4, relative to the controls, there was increased risk of massive intraoperative blood loss in patients with tumors that were either proximally located to vessels or other organs (odds ratio (OR): 4.227) or >= 5 cm in size (OR: 7.321), or in patients who had preoperative preparation time of <= 14 days (OR: 17.747). ('tumors', 'Disease', 'MESH:D009369', (126, 132)) ('tumors', 'Disease', (126, 132)) ('patients', 'Species', '9606', (259, 267)) ('tumors', 'Phenotype', 'HP:0002664', (126, 132)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('patients', 'Species', '9606', (112, 120)) ('intraoperative blood loss', 'Disease', (83, 108)) ('>= 5 cm', 'Var', (224, 231)) ('intraoperative blood loss', 'Disease', 'MESH:D016063', (83, 108)) 37193 29108378 Injury to such vascular structures and organs may also occur during the tumor resection, with lacerations capable of inducing intraoperative massive bleeding. ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('tumor', 'Disease', (72, 77)) ('intraoperative massive bleeding', 'Disease', 'MESH:D016063', (126, 157)) ('inducing', 'Reg', (117, 125)) ('intraoperative massive bleeding', 'Disease', (126, 157)) ('tumor', 'Disease', 'MESH:D009369', (72, 77)) ('lacerations', 'Var', (94, 105)) 37223 28781534 A malignant pheochromocytoma in a child with von Hippel-Lindau mutation Pheochromocytoma is a rare neuroendocrine tumor that arises from the chromaffin cells of the sympathetic nervous system. ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (2, 28)) ('malignant pheochromocytoma', 'Disease', (2, 28)) ('von Hippel-Lindau', 'Gene', (45, 62)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('neuroendocrine tumor', 'Disease', (99, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (12, 28)) ('Pheochromocytoma', 'Disease', (72, 88)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (72, 88)) ('mutation', 'Var', (63, 71)) ('von Hippel-Lindau', 'Gene', '7428', (45, 62)) ('chromaffin', 'Chemical', '-', (141, 151)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (72, 88)) ('child', 'Species', '9606', (34, 39)) ('neuroendocrine tumor', 'Disease', 'MESH:D018358', (99, 119)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (99, 119)) 37224 28781534 Over one third of pheochromocytomas are associated with germline mutations. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (18, 34)) ('pheochromocytomas', 'Disease', (18, 35)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (18, 35)) ('associated', 'Reg', (40, 50)) ('germline mutations', 'Var', (56, 74)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (18, 35)) 37226 28781534 Genetic tests revealed the presence of the VHL c 244 C>G (p. Arg 82 Gly) heterozygote mutation in the mother, as well as in the child. ('Arg 82 Gly', 'Var', (61, 71)) ('VHL', 'Disease', (43, 46)) ('244 C>G', 'Mutation', 'c.244C>G', (49, 56)) ('child', 'Species', '9606', (128, 133)) ('Arg 82 Gly', 'SUBSTITUTION', 'None', (61, 71)) ('VHL', 'Disease', 'MESH:D006623', (43, 46)) 37228 28781534 Lifelong complex follow-up is needed, as it is known that at a later age VHL mutation may cause retinal angiomas, cerebellar and spinal hemangioblastomas, relapsed pheocromocytoma, pancreatic and renal cysts, clear cell renal cell carcinoma and endolymphatic sac tumors. ('pancreatic and renal cysts', 'Disease', 'MESH:D010181', (181, 207)) ('mutation', 'Var', (77, 85)) ('carcinoma', 'Phenotype', 'HP:0030731', (231, 240)) ('renal cysts', 'Phenotype', 'HP:0000107', (196, 207)) ('endolymphatic sac tumors', 'Disease', 'MESH:D036821', (245, 269)) ('clear cell renal cell carcinoma', 'Phenotype', 'HP:0006770', (209, 240)) ('retinal angiomas', 'Disease', (96, 112)) ('pheocromocytoma', 'Disease', 'None', (164, 179)) ('cerebellar and spinal hemangioblastomas', 'Phenotype', 'HP:0006880', (114, 153)) ('retinal angiomas', 'Disease', 'MESH:D012173', (96, 112)) ('VHL', 'Disease', (73, 76)) ('spinal hemangioblastomas', 'Phenotype', 'HP:0009713', (129, 153)) ('pheocromocytoma', 'Disease', (164, 179)) ('endolymphatic sac tumors', 'Phenotype', 'HP:0030393', (245, 269)) ('clear cell renal cell carcinoma', 'Disease', 'MESH:C538614', (209, 240)) ('tumors', 'Phenotype', 'HP:0002664', (263, 269)) ('spinal hemangioblastomas', 'Disease', (129, 153)) ('spinal hemangioblastomas', 'Disease', 'MESH:D018325', (129, 153)) ('tumor', 'Phenotype', 'HP:0002664', (263, 268)) ('VHL', 'Disease', 'MESH:D006623', (73, 76)) ('clear cell renal cell carcinoma', 'Disease', (209, 240)) ('cause', 'Reg', (90, 95)) ('endolymphatic sac tumors', 'Disease', (245, 269)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (220, 240)) 37232 28781534 Over one third of the pheochromocytomas are associated with germline mutations of known susceptibility genes belonging to the succcinate dehydrogenase complex (SDHA, SDHB, SDHC, SDHD) or well characterized tumor syndromes: von Hippel-Lindau (VHL), Neurofibromatosis type 1 (NF1) and Multiple endocrine neoplasia type 2 (RET). ('pheochromocytoma', 'Phenotype', 'HP:0002666', (22, 38)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (248, 265)) ('von Hippel-Lindau', 'Gene', '7428', (223, 240)) ('RET', 'Gene', (320, 323)) ('SDHD', 'Gene', (178, 182)) ('Multiple endocrine neoplasia type 2', 'Disease', (283, 318)) ('tumor', 'Phenotype', 'HP:0002664', (206, 211)) ('SDHB', 'Gene', (166, 170)) ('SDHC', 'Gene', (172, 176)) ('NF1', 'Gene', '4763', (274, 277)) ('pheochromocytomas', 'Disease', (22, 39)) ('VHL', 'Disease', 'MESH:D006623', (242, 245)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (22, 39)) ('mutations', 'Var', (69, 78)) ('NF1', 'Gene', (274, 277)) ('neoplasia', 'Phenotype', 'HP:0002664', (302, 311)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (292, 311)) ('Neurofibromatosis type 1', 'Gene', '4763', (248, 272)) ('associated', 'Reg', (44, 54)) ('RET', 'Gene', '5979', (320, 323)) ('tumor', 'Disease', (206, 211)) ('von Hippel-Lindau', 'Gene', (223, 240)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (22, 39)) ('Multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (283, 318)) ('SDHC', 'Gene', '6391', (172, 176)) ('SDHD', 'Gene', '6392', (178, 182)) ('VHL', 'Disease', (242, 245)) ('Neurofibromatosis type 1', 'Gene', (248, 272)) ('tumor', 'Disease', 'MESH:D009369', (206, 211)) ('SDHB', 'Gene', '6390', (166, 170)) 37239 28781534 Genetic testing revealed the presence of the VHL c 244 C>G (p. Arg 82 Gly) heterozygote mutation, while the tests for RET, SDHB, SDHC and SDHD were negative. ('SDHC', 'Gene', '6391', (129, 133)) ('244 C>G', 'Mutation', 'c.244C>G', (51, 58)) ('SDHD', 'Gene', '6392', (138, 142)) ('RET', 'Gene', '5979', (118, 121)) ('Arg 82 Gly', 'SUBSTITUTION', 'None', (63, 73)) ('VHL', 'Disease', (45, 48)) ('SDHB', 'Gene', '6390', (123, 127)) ('VHL', 'Disease', 'MESH:D006623', (45, 48)) ('SDHB', 'Gene', (123, 127)) ('Arg 82 Gly', 'Var', (63, 73)) ('SDHC', 'Gene', (129, 133)) ('SDHD', 'Gene', (138, 142)) ('RET', 'Gene', (118, 121)) 37244 28781534 Genetic examination: VHL c 244 C>G (p. Arg 82 Gly) heterozygotic mutation. ('244 C>G', 'Mutation', 'c.244C>G', (27, 34)) ('Arg 82 Gly', 'Var', (39, 49)) ('VHL', 'Disease', 'MESH:D006623', (21, 24)) ('VHL', 'Disease', (21, 24)) ('Arg 82 Gly', 'SUBSTITUTION', 'None', (39, 49)) 37255 28781534 Von Hippel-Lindau disease is an autosomal dominant inherited neoplastic disorder, occurring in about 50% of patients with an isolated familial pheochromocytoma caused by germline mutations in the VHL tumor suppressor gene that demonstrates marked phenotypic variability. ('caused by', 'Reg', (160, 169)) ('Von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (0, 25)) ('tumor', 'Phenotype', 'HP:0002664', (200, 205)) ('autosomal dominant inherited neoplastic disorder', 'Disease', 'MESH:D009386', (32, 80)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (134, 159)) ('VHL tumor', 'Disease', (196, 205)) ('Von Hippel-Lindau disease', 'Disease', (0, 25)) ('neoplastic disorder', 'Phenotype', 'HP:0002664', (61, 80)) ('familial pheochromocytoma', 'Disease', (134, 159)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (143, 159)) ('patients', 'Species', '9606', (108, 116)) ('autosomal dominant inherited neoplastic disorder', 'Disease', (32, 80)) ('germline mutations', 'Var', (170, 188)) ('VHL tumor', 'Disease', 'MESH:D006623', (196, 205)) 37260 26273102 Each syndrome is associated with mutation in a gene encoding a particular subunit (or assembly factor) of succinate dehydrogenase (SDHx). ('SDHx', 'Gene', (131, 135)) ('succinate dehydrogenase', 'Gene', '6390', (106, 129)) ('mutation', 'Var', (33, 41)) ('associated', 'Reg', (17, 27)) ('succinate dehydrogenase', 'Gene', (106, 129)) ('syndrome', 'Disease', (5, 13)) ('SDHx', 'Chemical', '-', (131, 135)) 37270 26273102 The genetic basis for hereditary PGL syndrome type 1 (PGL1) was discovered by by combining knowledge that hypoxia increases the risk of carotid body PGLs with the presence of a hypoxia-responsive gene encoding succinate dehydrogenase subunit D (SDHD) within a region at chromosome 11q23 linked in family studies to hereditary head and neck PGLs (HNPGLs). ('hereditary PGL syndrome type 1', 'Disease', (22, 52)) ('SDHD', 'Gene', (245, 249)) ('SDHD', 'Gene', '6392', (245, 249)) ('presence', 'Var', (163, 171)) ('hypoxia', 'Disease', (106, 113)) ('succinate dehydrogenase subunit D', 'Gene', '6392', (210, 243)) ('HNPGLs', 'Chemical', '-', (346, 352)) ('hypoxia', 'Disease', 'MESH:D000860', (106, 113)) ('hypoxia', 'Disease', 'MESH:D000860', (177, 184)) ('succinate dehydrogenase subunit D', 'Gene', (210, 243)) ('hereditary PGL syndrome type 1', 'Disease', 'MESH:D010235', (22, 52)) ('carotid body PGLs', 'Disease', (136, 153)) ('hypoxia', 'Disease', (177, 184)) 37271 26273102 The phenotype of germline SDHD mutations was quickly extended to include thoracoabdominal PGLs (TAPGLs) and PCs. ('mutations', 'Var', (31, 40)) ('PCs', 'Disease', (108, 111)) ('abdominal PGL', 'Disease', 'MESH:D010235', (80, 93)) ('SDHD', 'Gene', (26, 30)) ('SDHD', 'Gene', '6392', (26, 30)) ('abdominal PGL', 'Disease', (80, 93)) 37272 26273102 Soon thereafter, the SDHC gene was found to be mutated in familial HNPGLs (PGL3) and SDHB mutations were discovered in familial PPGLs (PGL4). ('PGL4', 'Gene', (135, 139)) ('PPGLs', 'Chemical', '-', (128, 133)) ('PGL4', 'Gene', '6390', (135, 139)) ('mutations', 'Var', (90, 99)) ('SDHC', 'Gene', (21, 25)) ('familial HNPGLs', 'Disease', 'MESH:D009394', (58, 73)) ('PGL3', 'Gene', '6391', (75, 79)) ('SDHC', 'Gene', '6391', (21, 25)) ('PGL3', 'Gene', (75, 79)) ('familial HNPGLs', 'Disease', (58, 73)) ('familial PPGLs', 'Disease', (119, 133)) ('SDHB', 'Gene', (85, 89)) ('SDHB', 'Gene', '6390', (85, 89)) 37273 26273102 SDHAF2, required for flavination of SDHA, is mutated in the rare PGL2, and PGL5 is associated with mutations in SDHA. ('PGL5', 'Gene', '6389', (75, 79)) ('SDHAF2', 'Gene', '54949', (0, 6)) ('SDHA', 'Gene', (0, 4)) ('PGL5', 'Gene', (75, 79)) ('SDHAF2', 'Gene', (0, 6)) ('SDHA', 'Gene', '6389', (36, 40)) ('PGL2', 'Gene', '54949', (65, 69)) ('SDHA', 'Gene', '6389', (112, 116)) ('mutations', 'Var', (99, 108)) ('SDHA', 'Gene', (36, 40)) ('PGL2', 'Gene', (65, 69)) ('associated', 'Reg', (83, 93)) ('SDHA', 'Gene', '6389', (0, 4)) ('SDHA', 'Gene', (112, 116)) 37274 26273102 Germline mutations in predisposition genes are now found in 25-30% of PPGLs overall. ('Germline mutations', 'Var', (0, 18)) ('PPGLs', 'Disease', (70, 75)) ('PPGLs', 'Chemical', '-', (70, 75)) ('found', 'Reg', (51, 56)) 37275 26273102 Germline mutations in SDHx genes are the commonest genetic cause of PPGLs, occurring in up to 25% cases. ('Germline mutations', 'Var', (0, 18)) ('SDHx', 'Gene', (22, 26)) ('SDHx', 'Chemical', '-', (22, 26)) ('cause', 'Reg', (59, 64)) ('PPGLs', 'Chemical', '-', (68, 73)) ('PPGLs', 'Disease', (68, 73)) 37280 26273102 Therefore, two predictable consequences of SDH inactivation are succinate accumulation and increased production of reactive oxygen species. ('inactivation', 'Var', (47, 59)) ('SDH', 'Gene', (43, 46)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (115, 138)) ('succinate accumulation', 'MPA', (64, 86)) ('SDH', 'Gene', '6390', (43, 46)) ('increased', 'PosReg', (91, 100)) ('succinate', 'Chemical', 'MESH:D019802', (64, 73)) ('increased production of reactive oxygen species', 'Phenotype', 'HP:0025464', (91, 138)) ('production of reactive oxygen species', 'MPA', (101, 138)) 37282 26273102 Notably, this gene expression signature is shared by PPGLs associated with mutations in VHL. ('PPGLs', 'Chemical', '-', (53, 58)) ('associated', 'Reg', (59, 69)) ('mutations', 'Var', (75, 84)) ('VHL', 'Disease', (88, 91)) ('VHL', 'Disease', 'MESH:D006623', (88, 91)) 37292 26273102 PGL of the urinary bladder is associated with catcholaminergic symptoms that are provoked by micturition, and may also be associated with painless haematuria. ('associated', 'Reg', (122, 132)) ('associated', 'Reg', (30, 40)) ('pain', 'Phenotype', 'HP:0012531', (138, 142)) ('painless haematuria', 'Disease', 'MESH:D006417', (138, 157)) ('PGL', 'Var', (0, 3)) ('painless haematuria', 'Disease', (138, 157)) ('catcholaminergic', 'Disease', (46, 62)) 37301 26273102 Some general points can be made about these syndromes: i) they are autosomal dominant disorders, with maternal imprinting effects for SDHD and SDHAF2; ii) the penetrance of tumour development in subjects carrying SDHx mutations is highly variable, in particular for PGL3-5 - highlighted by the occasional finding that a child or young adult is the index case in a family where the parent (and sometimes grandparent) carrying the pathogenic allele has not developed tumours and iii) tumour development does not clearly follow a predetermined pattern - PPGLs, renal cancer, GISTs and/or pituitary tumours occur in a seemingly random fashion in affected subjects. ('tumour', 'Disease', (173, 179)) ('child', 'Species', '9606', (320, 325)) ('tumour', 'Disease', 'MESH:D009369', (482, 488)) ('tumours', 'Phenotype', 'HP:0002664', (465, 472)) ('tumours', 'Disease', 'MESH:D009369', (465, 472)) ('tumour', 'Disease', (482, 488)) ('SDHx', 'Chemical', '-', (213, 217)) ('autosomal dominant disorders', 'Disease', (67, 95)) ('pituitary tumours', 'Disease', 'MESH:D010911', (585, 602)) ('GISTs', 'Disease', (572, 577)) ('tumour', 'Phenotype', 'HP:0002664', (465, 471)) ('tumour', 'Disease', 'MESH:D009369', (465, 471)) ('tumour', 'Disease', (465, 471)) ('cancer', 'Phenotype', 'HP:0002664', (564, 570)) ('SDHD', 'Gene', '6392', (134, 138)) ('pituitary tumours', 'Disease', (585, 602)) ('SDHAF2', 'Gene', '54949', (143, 149)) ('SDHAF2', 'Gene', (143, 149)) ('PPGLs', 'Disease', (551, 556)) ('autosomal dominant disorders', 'Disease', 'MESH:D030342', (67, 95)) ('tumours', 'Disease', (595, 602)) ('tumour', 'Phenotype', 'HP:0002664', (595, 601)) ('SDHD', 'Gene', (134, 138)) ('renal cancer', 'Disease', (558, 570)) ('tumour', 'Disease', 'MESH:D009369', (595, 601)) ('renal cancer', 'Phenotype', 'HP:0009726', (558, 570)) ('tumour', 'Disease', (595, 601)) ('PGL3', 'Gene', (266, 270)) ('tumours', 'Phenotype', 'HP:0002664', (595, 602)) ('tumours', 'Disease', 'MESH:D009369', (595, 602)) ('mutations', 'Var', (218, 227)) ('renal cancer', 'Disease', 'MESH:D007680', (558, 570)) ('tumours', 'Disease', (465, 472)) ('SDHx', 'Gene', (213, 217)) ('tumour', 'Phenotype', 'HP:0002664', (173, 179)) ('tumour', 'Phenotype', 'HP:0002664', (482, 488)) ('PPGLs', 'Chemical', '-', (551, 556)) ('PGL3', 'Gene', '6391', (266, 270)) ('tumour', 'Disease', 'MESH:D009369', (173, 179)) 37302 26273102 SDHD is maternally imprinted, with the result that the disease almost only ever occurs with paternally inherited mutations and as such, to the uninitiated, may appear to 'skip' generations. ('SDHD', 'Gene', (0, 4)) ('mutations', 'Var', (113, 122)) ('SDHD', 'Gene', '6392', (0, 4)) 37303 26273102 When paternally inherited, SDHD mutations are associated with frequent development of HNPGL and less commonly TAPGLs or phaechromocytomas. ('HNPGL', 'Disease', (86, 91)) ('TAPGLs', 'Disease', (110, 116)) ('SDHD', 'Gene', '6392', (27, 31)) ('mutations', 'Var', (32, 41)) ('phaechromocytomas', 'Disease', (120, 137)) ('associated with', 'Reg', (46, 61)) ('SDHD', 'Gene', (27, 31)) 37307 26273102 Prematurely truncating mutations (by frameshift or nonsense variants) are particularly common in SDHD, and one study found that these mutations were associated with a significantly increased risk of phaeochromocytoma or sympathetic PGL compared to missense mutations that were not predicted to impair protein stability. ('SDHD', 'Gene', (97, 101)) ('nonsense variants', 'Var', (51, 68)) ('common', 'Reg', (87, 93)) ('frameshift', 'Var', (37, 47)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (199, 216)) ('associated', 'Reg', (149, 159)) ('sympathetic PGL', 'Disease', (220, 235)) ('mutations', 'Var', (134, 143)) ('phaeochromocytoma', 'Disease', (199, 216)) ('Prematurely', 'MPA', (0, 11)) ('SDHD', 'Gene', '6392', (97, 101)) 37309 26273102 SDHAF2 mutations are a rare cause of PPGLs: only four PGL2 families have been described. ('PGL2', 'Gene', (54, 58)) ('PGL2', 'Gene', '54949', (54, 58)) ('PPGLs', 'Chemical', '-', (37, 42)) ('SDHAF2', 'Gene', '54949', (0, 6)) ('SDHAF2', 'Gene', (0, 6)) ('cause', 'Reg', (28, 33)) ('PPGLs', 'Disease', (37, 42)) ('mutations', 'Var', (7, 16)) 37311 26273102 HNPGLs occur in 75% carriers of paternally inherited mutations, starting from relatively young age (earliest affected aged 22 years) and often multifocal but are not malignant. ('HNPGLs', 'Chemical', '-', (0, 6)) ('HNPGLs', 'Disease', (0, 6)) ('mutations', 'Var', (53, 62)) 37313 26273102 Mutations in SDHC have been identified in patients with HNPGL and, rarely, TAPGLs and PCs. ('identified', 'Reg', (28, 38)) ('SDHC', 'Gene', (13, 17)) ('SDHC', 'Gene', '6391', (13, 17)) ('Mutations', 'Var', (0, 9)) ('HNPGL', 'Disease', (56, 61)) ('patients', 'Species', '9606', (42, 50)) 37315 26273102 Overall, germline SDHC mutations are found in around 4% of HNPGL but very few functioning PPGLs. ('HNPGL', 'Disease', (59, 64)) ('SDHC', 'Gene', (18, 22)) ('mutations', 'Var', (23, 32)) ('SDHC', 'Gene', '6391', (18, 22)) ('PPGLs', 'Chemical', '-', (90, 95)) 37316 26273102 Patients with SDHC mutations are more likely to develop carotid body tumours, less likely to have multiple tumours than in SDHD mutated PGL, and have low malignant potential compared to SDHB-mutated PGL. ('multiple tumours', 'Disease', (98, 114)) ('carotid body tumours', 'Disease', (56, 76)) ('SDHB', 'Gene', (186, 190)) ('SDHC', 'Gene', (14, 18)) ('develop', 'PosReg', (48, 55)) ('multiple tumours', 'Disease', 'MESH:D009369', (98, 114)) ('SDHD', 'Gene', (123, 127)) ('mutations', 'Var', (19, 28)) ('SDHD', 'Gene', '6392', (123, 127)) ('SDHC', 'Gene', '6391', (14, 18)) ('Patients', 'Species', '9606', (0, 8)) ('tumour', 'Phenotype', 'HP:0002664', (107, 113)) ('tumour', 'Phenotype', 'HP:0002664', (69, 75)) ('tumours', 'Phenotype', 'HP:0002664', (69, 76)) ('tumours', 'Phenotype', 'HP:0002664', (107, 114)) ('carotid body tumours', 'Disease', 'MESH:D002345', (56, 76)) ('SDHB', 'Gene', '6390', (186, 190)) ('malignant potential', 'CPA', (154, 173)) 37317 26273102 Nearly 50 unique SDHC mutations have been described in PGL3 to date, and these are evenly distributed between the six coding exons (Fig. ('SDHC', 'Gene', (17, 21)) ('SDHC', 'Gene', '6391', (17, 21)) ('mutations', 'Var', (22, 31)) ('PGL3', 'Gene', '6391', (55, 59)) ('PGL3', 'Gene', (55, 59)) 37318 26273102 SDHB mutations were first found to be associated with PPGL in 2001. ('associated', 'Reg', (38, 48)) ('mutations', 'Var', (5, 14)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) ('PPGL', 'Disease', (54, 58)) 37319 26273102 In comparison to PGL1, patients with SDHB mutations have lower penetrance for disease and may present with unifocal disease at a later age, with perhaps only about 40% of carriers manifesting the disease by age 40. ('patients', 'Species', '9606', (23, 31)) ('SDHB', 'Gene', '6390', (37, 41)) ('present with', 'Reg', (94, 106)) ('mutations', 'Var', (42, 51)) ('penetrance for disease', 'MPA', (63, 85)) ('SDHB', 'Gene', (37, 41)) ('unifocal disease', 'Disease', (107, 123)) ('lower', 'NegReg', (57, 62)) 37321 26273102 HNPGL occurs in 20-30%, renal cell cancer in about 14% and GISTs in 2% of carriers of pathogenic SDHB mutations. ('SDHB', 'Gene', (97, 101)) ('SDHB', 'Gene', '6390', (97, 101)) ('cancer', 'Phenotype', 'HP:0002664', (35, 41)) ('HNPGL', 'Disease', (0, 5)) ('mutations', 'Var', (102, 111)) ('occurs', 'Reg', (6, 12)) ('renal cell cancer', 'Disease', 'MESH:C538614', (24, 41)) ('renal cell cancer', 'Disease', (24, 41)) 37322 26273102 More than 200 unique SDHB mutations occurring in all its eight coding exons have been described in PGL4; there are interesting clusters of mutations at the junction of exons 3/4 and in exons 6 and 7 that appear to occur within iron-sulfur cluster domains of SDHB (Fig. ('SDHB', 'Gene', (258, 262)) ('sulfur', 'Chemical', 'MESH:D013455', (232, 238)) ('mutations', 'Var', (139, 148)) ('iron', 'Chemical', 'MESH:D007501', (227, 231)) ('PGL4', 'Gene', (99, 103)) ('SDHB', 'Gene', '6390', (21, 25)) ('mutations', 'Var', (26, 35)) ('PGL4', 'Gene', '6390', (99, 103)) ('SDHB', 'Gene', '6390', (258, 262)) ('SDHB', 'Gene', (21, 25)) 37323 26273102 Mutations in SDHA were originally described as a cause of autosomal recessive juvenile encephalopathy (Leigh syndrome). ('encephalopathy', 'Phenotype', 'HP:0001298', (87, 101)) ('autosomal recessive juvenile encephalopathy', 'Disease', 'MESH:D001927', (58, 101)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (103, 117)) ('Mutations', 'Var', (0, 9)) ('SDHA', 'Gene', '6389', (13, 17)) ('autosomal recessive juvenile encephalopathy', 'Disease', (58, 101)) ('juvenile encephalopathy', 'Phenotype', 'HP:0005681', (78, 101)) ('cause', 'Reg', (49, 54)) ('SDHA', 'Gene', (13, 17)) ('Leigh syndrome', 'Disease', (103, 117)) 37325 26273102 SDHA mutations remain a rare cause of PPGL, accounting for about 3% of cases and with low penetrance such that familial disease is uncommon. ('SDHA', 'Gene', (0, 4)) ('familial disease', 'Disease', (111, 127)) ('PPGL', 'Disease', (38, 42)) ('mutations', 'Var', (5, 14)) ('familial disease', 'Disease', 'MESH:D030342', (111, 127)) ('SDHA', 'Gene', '6389', (0, 4)) ('cause', 'Reg', (29, 34)) 37327 26273102 Genetic testing for SDHA mutations is complicated by the presence of three pseudogenes - SDHAP1 (localized to 3q29), SDHAP2 (3q29) and SDHAP3 (5p15.33) - which are highly homologous to not only the coding regions of SDHA but also the intronic regions of the gene. ('SDHAP3', 'Gene', (135, 141)) ('mutations', 'Var', (25, 34)) ('SDHA', 'Gene', '6389', (117, 121)) ('SDHA', 'Gene', (216, 220)) ('SDHA', 'Gene', '6389', (135, 139)) ('SDHAP2', 'Gene', '727956', (117, 123)) ('SDHA', 'Gene', (89, 93)) ('SDHA', 'Gene', (20, 24)) ('SDHAP1', 'Gene', (89, 95)) ('SDHAP3', 'Gene', '728609', (135, 141)) ('SDHA', 'Gene', (117, 121)) ('SDHAP1', 'Gene', '255812', (89, 95)) ('SDHA', 'Gene', '6389', (216, 220)) ('SDHAP2', 'Gene', (117, 123)) ('SDHA', 'Gene', '6389', (20, 24)) ('SDHA', 'Gene', (135, 139)) ('SDHA', 'Gene', '6389', (89, 93)) 37329 26273102 Fortunately, SDHA immunohistochemistry has proved useful in identifying tumours that are likely to contain SDHA mutations. ('SDHA', 'Gene', '6389', (107, 111)) ('tumour', 'Phenotype', 'HP:0002664', (72, 78)) ('tumours', 'Phenotype', 'HP:0002664', (72, 79)) ('mutations', 'Var', (112, 121)) ('SDHA', 'Gene', (107, 111)) ('SDHA', 'Gene', '6389', (13, 17)) ('tumours', 'Disease', 'MESH:D009369', (72, 79)) ('tumours', 'Disease', (72, 79)) ('SDHA', 'Gene', (13, 17)) 37332 26273102 Approximately 40% of all PGLs are associated with SDH deficiency, and those associated with SDHB mutations (PGL4) are at higher risk of malignancy. ('mutations', 'Var', (97, 106)) ('malignancy', 'Disease', (136, 146)) ('associated', 'Reg', (34, 44)) ('SDHB', 'Gene', '6390', (92, 96)) ('SDH deficiency', 'Disease', (50, 64)) ('PGLs', 'Disease', (25, 29)) ('SDH deficiency', 'Disease', 'MESH:D007153', (50, 64)) ('SDHB', 'Gene', (92, 96)) ('malignancy', 'Disease', 'MESH:D009369', (136, 146)) ('PGL4', 'Gene', (108, 112)) ('PGL4', 'Gene', '6390', (108, 112)) 37348 26273102 PCs associated with SDHB mutations (PGL4) show a higher risk of malignancy. ('mutations', 'Var', (25, 34)) ('malignancy', 'Disease', (64, 74)) ('PGL4', 'Gene', (36, 40)) ('PGL4', 'Gene', '6390', (36, 40)) ('SDHB', 'Gene', '6390', (20, 24)) ('malignancy', 'Disease', 'MESH:D009369', (64, 74)) ('SDHB', 'Gene', (20, 24)) 37351 26273102 Standard 18F-FDG-PET imaging was reported to have 88% sensitivity in diagnosis of non-metastatic PC/PGL, although this series included a relatively large number of tumors containing SDHB mutations (which are more likely to be positive due to altered glucose transport). ('tumors', 'Disease', (164, 170)) ('tumors', 'Disease', 'MESH:D009369', (164, 170)) ('tumors', 'Phenotype', 'HP:0002664', (164, 170)) ('glucose', 'Chemical', 'MESH:D005947', (250, 257)) ('mutations', 'Var', (187, 196)) ('SDHB', 'Gene', '6390', (182, 186)) ('FDG', 'Chemical', 'MESH:D019788', (13, 16)) ('non-metastatic PC/PGL', 'Disease', (82, 103)) ('tumor', 'Phenotype', 'HP:0002664', (164, 169)) ('SDHB', 'Gene', (182, 186)) 37357 26273102 Although only 0.05-0.2% of all renal cancers are associated with SDHx mutations, they can be recognised by distinct pathological features including solid or focally cystic growth, uniform cytology with eosinophilic flocculent cytoplasm, intracytoplasmic vacuolations and inclusions and round-to-oval low-grade nuclei. ('eosinophilic', 'Disease', 'MESH:D004802', (202, 214)) ('mutations', 'Var', (70, 79)) ('renal cancers', 'Disease', (31, 44)) ('cancers', 'Phenotype', 'HP:0002664', (37, 44)) ('associated', 'Reg', (49, 59)) ('renal cancer', 'Phenotype', 'HP:0009726', (31, 43)) ('SDHx', 'Chemical', '-', (65, 69)) ('cancer', 'Phenotype', 'HP:0002664', (37, 43)) ('SDHx', 'Gene', (65, 69)) ('eosinophilic', 'Disease', (202, 214)) ('renal cancers', 'Disease', 'MESH:D007680', (31, 44)) 37358 26273102 In SDHB mutated renal cancers, immunohistochemistry for SDHB is negative. ('SDHB', 'Gene', '6390', (56, 60)) ('SDHB', 'Gene', (56, 60)) ('cancers', 'Phenotype', 'HP:0002664', (22, 29)) ('mutated', 'Var', (8, 15)) ('renal cancers', 'Disease', 'MESH:D007680', (16, 29)) ('SDHB', 'Gene', '6390', (3, 7)) ('cancer', 'Phenotype', 'HP:0002664', (22, 28)) ('renal cancers', 'Disease', (16, 29)) ('renal cancer', 'Phenotype', 'HP:0009726', (16, 28)) ('SDHB', 'Gene', (3, 7)) 37359 26273102 Although no clear-cut genotype-phenotype correlations have been defined, it is interesting to note that four unrelated subjects who developed renal cancer all harboured the same SDHB splice site mutation (c.423+1G>A), and that two of these subjects developed multifocal disease. ('c.423+1G>A', 'Mutation', 'rs398122805', (205, 215)) ('cancer', 'Phenotype', 'HP:0002664', (148, 154)) ('renal cancer', 'Disease', (142, 154)) ('renal cancer', 'Disease', 'MESH:D007680', (142, 154)) ('renal cancer', 'Phenotype', 'HP:0009726', (142, 154)) ('multifocal disease', 'Disease', (259, 277)) ('multifocal disease', 'Disease', 'None', (259, 277)) ('SDHB', 'Gene', '6390', (178, 182)) ('c.423+1G>A', 'Var', (205, 215)) ('SDHB', 'Gene', (178, 182)) 37363 26273102 However, only 50% of such SDH-deficient GISTs are found to be associated with germline mutations in an SDHx gene: 30% due to SDHA mutations, and 10-20% due to mutations in SDHB, SDHC or SDHD. ('SDHD', 'Gene', (186, 190)) ('SDH', 'Gene', (178, 181)) ('SDHC', 'Gene', '6391', (178, 182)) ('SDH', 'Gene', (186, 189)) ('mutations', 'Var', (87, 96)) ('due', 'Reg', (118, 121)) ('SDH', 'Gene', (26, 29)) ('SDH', 'Gene', '6390', (103, 106)) ('SDHB', 'Gene', '6390', (172, 176)) ('SDH', 'Gene', '6390', (172, 175)) ('SDHC', 'Gene', (178, 182)) ('SDH', 'Gene', '6390', (125, 128)) ('SDHA', 'Gene', (125, 129)) ('SDH', 'Gene', (103, 106)) ('SDH', 'Gene', '6390', (178, 181)) ('SDHA', 'Gene', '6389', (125, 129)) ('SDHB', 'Gene', (172, 176)) ('SDHD', 'Gene', '6392', (186, 190)) ('SDH', 'Gene', (172, 175)) ('SDH', 'Gene', '6390', (186, 189)) ('mutations', 'Var', (130, 139)) ('SDH', 'Gene', '6390', (26, 29)) ('SDHx', 'Chemical', '-', (103, 107)) ('SDH', 'Gene', (125, 128)) 37365 26273102 GISTs associated with hereditary PGL due to germline mutations of SDHA, SDHB, SDHC or SDHD are known as the Carney-Stratakis syndrome. ('SDHC', 'Gene', '6391', (78, 82)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (108, 133)) ('SDHD', 'Gene', (86, 90)) ('associated', 'Reg', (6, 16)) ('SDHB', 'Gene', (72, 76)) ('SDHA', 'Gene', (66, 70)) ('SDHD', 'Gene', '6392', (86, 90)) ('Carney-Stratakis syndrome', 'Disease', (108, 133)) ('germline mutations', 'Var', (44, 62)) ('SDHB', 'Gene', '6390', (72, 76)) ('SDHC', 'Gene', (78, 82)) ('hereditary PGL', 'Disease', (22, 36)) ('SDHA', 'Gene', '6389', (66, 70)) 37366 26273102 GISTs also occur as part of the Carney triad: the syndromic but non-hereditary association of SDH-deficient GISTs now known to be associated with hypermethylation of the SDHC promoter. ('SDH', 'Gene', '6390', (94, 97)) ('hypermethylation', 'Var', (146, 162)) ('SDH', 'Gene', '6390', (170, 173)) ('GISTs', 'Disease', (108, 113)) ('SDH', 'Gene', (94, 97)) ('SDHC', 'Gene', (170, 174)) ('SDHC', 'Gene', '6391', (170, 174)) ('SDH', 'Gene', (170, 173)) ('associated', 'Reg', (130, 140)) 37367 26273102 An aetiopathological link between SDHx mutations and pituitary tumours is strongly suggested by case reports of pituitary tumours that demonstrate loss of SDHB immunostaining, occurring in patients who carry germline mutations in SDHA, SDHB, SDHC and SDHD. ('SDHC', 'Gene', '6391', (242, 246)) ('pituitary tumours', 'Disease', (112, 129)) ('loss', 'NegReg', (147, 151)) ('patients', 'Species', '9606', (189, 197)) ('tumour', 'Phenotype', 'HP:0002664', (122, 128)) ('pituitary tumours', 'Disease', 'MESH:D010911', (53, 70)) ('SDHA', 'Gene', (230, 234)) ('tumours', 'Phenotype', 'HP:0002664', (122, 129)) ('SDHB', 'Gene', '6390', (236, 240)) ('SDHx', 'Gene', (34, 38)) ('mutations', 'Var', (39, 48)) ('SDHD', 'Gene', '6392', (251, 255)) ('SDHA', 'Gene', '6389', (230, 234)) ('SDHC', 'Gene', (242, 246)) ('SDHB', 'Gene', '6390', (155, 159)) ('pituitary tumours', 'Disease', (53, 70)) ('SDHx', 'Chemical', '-', (34, 38)) ('SDHD', 'Gene', (251, 255)) ('tumours', 'Phenotype', 'HP:0002664', (63, 70)) ('SDHB', 'Gene', (236, 240)) ('SDHB', 'Gene', (155, 159)) ('pituitary tumours', 'Disease', 'MESH:D010911', (112, 129)) ('immunostaining', 'MPA', (160, 174)) ('tumour', 'Phenotype', 'HP:0002664', (63, 69)) 37370 26273102 A few individuals with an SDHB or an SDHD pathogenic variant have had thyroid carcinoma. ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (70, 87)) ('thyroid carcinoma', 'Disease', (70, 87)) ('SDHD', 'Gene', '6392', (37, 41)) ('variant', 'Var', (53, 60)) ('carcinoma', 'Phenotype', 'HP:0030731', (78, 87)) ('SDHD', 'Gene', (37, 41)) ('SDHB', 'Gene', '6390', (26, 30)) ('SDHB', 'Gene', (26, 30)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (70, 87)) 37372 26273102 SDHx are tumour suppressor genes: inheritance of a pathogenic mutation on one allele in the germline is typically accompanied by loss of the normal allele in tumours. ('pathogenic', 'Reg', (51, 61)) ('tumour', 'Disease', (9, 15)) ('tumour', 'Phenotype', 'HP:0002664', (158, 164)) ('tumour', 'Disease', 'MESH:D009369', (158, 164)) ('tumours', 'Phenotype', 'HP:0002664', (158, 165)) ('tumours', 'Disease', 'MESH:D009369', (158, 165)) ('SDHx', 'Chemical', '-', (0, 4)) ('mutation', 'Var', (62, 70)) ('tumours', 'Disease', (158, 165)) ('tumour', 'Disease', (158, 164)) ('tumour', 'Phenotype', 'HP:0002664', (9, 15)) ('tumour', 'Disease', 'MESH:D009369', (9, 15)) 37373 26273102 Loss of SDHB immunostaining has proved to be an important tool for recognising tumours associated with mutations in any of the SDHx genes, and indeed is a robust assay in all the multiple tumour types described above. ('tumour', 'Phenotype', 'HP:0002664', (188, 194)) ('mutations', 'Var', (103, 112)) ('tumour type', 'Disease', (188, 199)) ('SDHB', 'Gene', '6390', (8, 12)) ('SDHx', 'Chemical', '-', (127, 131)) ('SDHx', 'Gene', (127, 131)) ('tumour type', 'Disease', 'MESH:D009369', (188, 199)) ('tumour', 'Phenotype', 'HP:0002664', (79, 85)) ('SDHB', 'Gene', (8, 12)) ('Loss', 'NegReg', (0, 4)) ('tumours', 'Phenotype', 'HP:0002664', (79, 86)) ('tumours', 'Disease', 'MESH:D009369', (79, 86)) ('tumours', 'Disease', (79, 86)) 37374 26273102 In a large multicenter study, 62 of 69 PPGLs associated with mutations in SDHB/C/D/AF2 were negative for SDHB immunohistochemistry, whereas two SDHD-mutated tumours were scored as immunopositive. ('PPGLs', 'Chemical', '-', (39, 44)) ('negative', 'NegReg', (92, 100)) ('SDHB', 'Gene', '6390', (105, 109)) ('tumour', 'Phenotype', 'HP:0002664', (157, 163)) ('SDHB', 'Gene', '6390', (74, 78)) ('tumours', 'Phenotype', 'HP:0002664', (157, 164)) ('SDHB', 'Gene', (74, 78)) ('mutations', 'Var', (61, 70)) ('associated', 'Reg', (45, 55)) ('SDHB', 'Gene', (105, 109)) ('SDHD', 'Gene', '6392', (144, 148)) ('tumours', 'Disease', 'MESH:D009369', (157, 164)) ('SDHD', 'Gene', (144, 148)) ('tumours', 'Disease', (157, 164)) 37376 26273102 Tumors associated with mutations in RET or NF1, on the other hand, usually show positive granular SDHB cytoplasmic staining (consistent with normal mitochondrial location of SDH). ('RET', 'Gene', (36, 39)) ('SDH', 'Gene', (98, 101)) ('SDH', 'Gene', (174, 177)) ('NF1', 'Gene', (43, 46)) ('RET', 'Gene', '5979', (36, 39)) ('SDHB', 'Gene', '6390', (98, 102)) ('Tumors', 'Disease', (0, 6)) ('mutations', 'Var', (23, 32)) ('SDHB', 'Gene', (98, 102)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('NF1', 'Gene', '4763', (43, 46)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('SDH', 'Gene', '6390', (98, 101)) ('SDH', 'Gene', '6390', (174, 177)) 37377 26273102 Immunohistochemistry for SDHA has also been used to identify tumors associated with germline mutations in that gene. ('tumors', 'Disease', (61, 67)) ('tumors', 'Disease', 'MESH:D009369', (61, 67)) ('mutations', 'Var', (93, 102)) ('SDHA', 'Gene', (25, 29)) ('SDHA', 'Gene', '6389', (25, 29)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('tumors', 'Phenotype', 'HP:0002664', (61, 67)) 37382 26273102 In contrast, PCs are rarely the index event in other forms of hereditary PC because their syndromic features are more highly penetrant: MEN2 (associated with RET mutations) will almost always present with medullary thyroid cancer, Von Recklinhausen's disease (NF1) will be apparent from cutaneous stigmata of that disease and a diagnosis of VHL syndrome is known in about 50-70% cases before PPGLs develop. ('VHL syndrome', 'Disease', (341, 353)) ("Von Recklinhausen's disease", 'Disease', (231, 258)) ('cancer', 'Phenotype', 'HP:0002664', (223, 229)) ('RET', 'Gene', (158, 161)) ('NF1', 'Gene', (260, 263)) ("Von Recklinhausen's disease", 'Disease', 'MESH:D014842', (231, 258)) ('NF1', 'Gene', '4763', (260, 263)) ('thyroid cancer', 'Disease', (215, 229)) ('RET', 'Gene', '5979', (158, 161)) ('MEN2', 'Var', (136, 140)) ('VHL syndrome', 'Disease', 'MESH:D006623', (341, 353)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (215, 229)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (205, 229)) ('PPGLs', 'Chemical', '-', (392, 397)) ('present with', 'Reg', (192, 204)) ('thyroid cancer', 'Disease', 'MESH:D013964', (215, 229)) 37384 26273102 Consistent with autosomal dominant pattern of inheritance, each child of an individual with a hereditary PGL syndrome has a 50% chance of inheriting the pathogenic variant. ('hereditary PGL syndrome', 'Disease', 'MESH:D010235', (94, 117)) ('hereditary PGL syndrome', 'Disease', (94, 117)) ('inheriting', 'Reg', (138, 148)) ('variant', 'Var', (164, 171)) ('child', 'Species', '9606', (64, 69)) 37388 26273102 phenoxybenzamine or doxazosin); treatment options for non-secreting HNPGLs include surgery, radiosurgery, radiofrequency ablation or cryoablation; histopathology should include careful assessment of SDHB and SDHA immunohistochemistry; negative SDHB immunohistochemistry should prompt consideration of genetic testing for mutations in SDHA, SDHB, SDHC or SDHD after appropriate genetic counseling; negative SDHA immunohistochemistry should prompt consideration of genetic testing for mutations in SDHA; genetic testing is performed on DNA extracted from peripheral blood leucoytes and should include validated methods for detecting point mutations, insertions and deletions as well as large deletions in SDHx genes; a positive result from genetic testing should lead to cascade testing of first-degree relatives after appropriate counseling and individuals discovered to carry a pathogenic mutation in SDHx genes should undergo lifelong biochemical and clinical surveillance for PPGLs. ('SDHx', 'Gene', (901, 905)) ('SDHA', 'Gene', (334, 338)) ('SDHA', 'Gene', (406, 410)) ('SDHB', 'Gene', '6390', (340, 344)) ('HNPGLs', 'Chemical', '-', (68, 74)) ('SDHB', 'Gene', '6390', (244, 248)) ('SDHA', 'Gene', (208, 212)) ('SDHB', 'Gene', (199, 203)) ('SDHA', 'Gene', '6389', (334, 338)) ('SDHC', 'Gene', (346, 350)) ('SDHx', 'Chemical', '-', (901, 905)) ('SDHA', 'Gene', '6389', (406, 410)) ('SDHx', 'Chemical', '-', (703, 707)) ('SDHA', 'Gene', '6389', (208, 212)) ('PPGLs', 'Chemical', '-', (978, 983)) ('SDHB', 'Gene', (340, 344)) ('SDHD', 'Gene', '6392', (354, 358)) ('SDHB', 'Gene', (244, 248)) ('doxazosin', 'Chemical', 'MESH:D017292', (20, 29)) ('mutation', 'Var', (889, 897)) ('SDHA', 'Gene', (496, 500)) ('SDHD', 'Gene', (354, 358)) ('SDHA', 'Gene', '6389', (496, 500)) ('SDHC', 'Gene', '6391', (346, 350)) ('SDHB', 'Gene', '6390', (199, 203)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (0, 16)) 37391 26273102 Elucidating the genetic basis of the hereditary paraganglioma syndromes has stimulated great advances in clinical care for these patients, providing opportunities for early detection and treatment of component tumours, but not without costs: both in terms of resources required for genetic testing and then lifetime screening of SDHx mutation carriers to detect tumour development anywhere from base of skull to pelvis; and also from the psychological burden these patients bear from not knowing if, when, where and in what manner (benign or malignant) these tumours will develop. ('tumours', 'Phenotype', 'HP:0002664', (559, 566)) ('component tumours', 'Disease', (200, 217)) ('tumours', 'Disease', 'MESH:D009369', (559, 566)) ('paraganglioma', 'Phenotype', 'HP:0002668', (48, 61)) ('component tumours', 'Disease', 'MESH:D009369', (200, 217)) ('tumours', 'Phenotype', 'HP:0002664', (210, 217)) ('hereditary paraganglioma syndromes', 'Disease', 'MESH:D010235', (37, 71)) ('tumours', 'Disease', 'MESH:D009369', (210, 217)) ('tumour', 'Phenotype', 'HP:0002664', (362, 368)) ('tumour', 'Disease', 'MESH:D009369', (362, 368)) ('tumour', 'Phenotype', 'HP:0002664', (559, 565)) ('patients', 'Species', '9606', (465, 473)) ('tumour', 'Disease', 'MESH:D009369', (559, 565)) ('tumour', 'Disease', (362, 368)) ('SDHx', 'Gene', (329, 333)) ('tumour', 'Phenotype', 'HP:0002664', (210, 216)) ('tumour', 'Disease', 'MESH:D009369', (210, 216)) ('tumour', 'Disease', (559, 565)) ('mutation', 'Var', (334, 342)) ('hereditary paraganglioma syndromes', 'Disease', (37, 71)) ('tumour', 'Disease', (210, 216)) ('patients', 'Species', '9606', (129, 137)) ('SDHx', 'Chemical', '-', (329, 333)) ('tumours', 'Disease', (559, 566)) ('tumours', 'Disease', (210, 217)) 37475 24138700 Therapy with radionucleotides may be used for tumors exhibiting uptake on diagnostic scans, with I131-MIBG radiotherapy being the treatment of choice. ('tumor', 'Phenotype', 'HP:0002664', (46, 51)) ('radionucleotides', 'Chemical', '-', (13, 29)) ('tumors', 'Phenotype', 'HP:0002664', (46, 52)) ('I131-MIBG', 'Var', (97, 106)) ('tumors', 'Disease', (46, 52)) ('MIBG', 'Chemical', 'MESH:D019797', (102, 106)) ('tumors', 'Disease', 'MESH:D009369', (46, 52)) 37484 21997692 This occurs via germline mutations of the SDH subunit genes and hitherto unknown mechanisms. ('germline mutations', 'Var', (16, 34)) ('SDH', 'Gene', (42, 45)) ('SDH', 'Gene', '6390', (42, 45)) ('occurs', 'Reg', (5, 11)) 37489 21997692 Two patients each had either pulmonary chondroma or paraganglioma (CT), but none of the examined cases had SDH germline mutations (CSS) or somatic KIT/PDGFRA or BRAF mutations. ('PDGFRA', 'Gene', '5156', (151, 157)) ('mutations', 'Var', (166, 175)) ('PDGFRA', 'Gene', (151, 157)) ('SDH', 'Gene', '6390', (107, 110)) ('paraganglioma', 'Phenotype', 'HP:0002668', (52, 65)) ('BRAF', 'Gene', (161, 165)) ('BRAF', 'Gene', '673', (161, 165)) ('pulmonary chondroma or paraganglioma', 'Disease', (29, 65)) ('pulmonary chondroma', 'Phenotype', 'HP:0031474', (29, 48)) ('patients', 'Species', '9606', (4, 12)) ('SDH', 'Gene', (107, 110)) ('pulmonary chondroma or paraganglioma', 'Disease', 'MESH:D002812', (29, 65)) 37500 21997692 Rare examples of wild-type GISTs, mostly intestinal ones, have been reported to harbor BRAF mutations. ('BRAF', 'Gene', (87, 91)) ('BRAF', 'Gene', '673', (87, 91)) ('mutations', 'Var', (92, 101)) 37502 21997692 In Carney-Stratakis syndrome (GIST and paraganglioma) and familial paraganglioma syndromes, loss-of-function SDHB, C, or D germline mutations are associated with a somatic loss of function alteration causing bi-allelic inactivation of SDH in tumor cells typical of classic tumor suppressor genes. ('Carney-Stratakis syndrome', 'Disease', (3, 28)) ('SDHB', 'Gene', '6390', (109, 113)) ('bi-allelic inactivation', 'Var', (208, 231)) ('loss of function', 'NegReg', (172, 188)) ('alteration', 'Var', (189, 199)) ('tumor', 'Disease', (242, 247)) ('tumor', 'Disease', (273, 278)) ('paraganglioma', 'Phenotype', 'HP:0002668', (39, 52)) ('paraganglioma', 'Disease', (67, 80)) ('tumor', 'Disease', 'MESH:D009369', (242, 247)) ('tumor', 'Disease', 'MESH:D009369', (273, 278)) ('SDHB', 'Gene', (109, 113)) ('paraganglioma', 'Disease', 'MESH:D010235', (67, 80)) ('SDH', 'Gene', '6390', (109, 112)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (3, 28)) ('familial paraganglioma syndromes', 'Disease', (58, 90)) ('loss-of-function', 'NegReg', (92, 108)) ('tumor', 'Phenotype', 'HP:0002664', (242, 247)) ('germline mutations', 'Var', (123, 141)) ('familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (58, 90)) ('SDH', 'Gene', '6390', (235, 238)) ('tumor', 'Phenotype', 'HP:0002664', (273, 278)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) ('SDH', 'Gene', (109, 112)) ('paraganglioma', 'Disease', (39, 52)) ('paraganglioma', 'Disease', 'MESH:D010235', (39, 52)) ('SDH', 'Gene', (235, 238)) 37505 21997692 It has also been shown that silencing of SDHB expression induces tumor-like phenotypic traits in cell cultures. ('induces', 'Reg', (57, 64)) ('tumor', 'Disease', (65, 70)) ('SDHB', 'Gene', '6390', (41, 45)) ('tumor', 'Disease', 'MESH:D009369', (65, 70)) ('silencing', 'Var', (28, 37)) ('SDHB', 'Gene', (41, 45)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) 37513 21997692 Many of them are also SDHB-negative generally reflecting loss-of-function germline mutations in one of the SDH-genes, which in combination with somatic loss-of-function of the other allele lead to silencing of one of the SDH-genes and functional loss of the SDH-complex. ('mutations', 'Var', (83, 92)) ('loss-of-function', 'NegReg', (57, 73)) ('SDH', 'Gene', '6390', (258, 261)) ('SDH', 'Gene', '6390', (107, 110)) ('SDHB', 'Gene', '6390', (22, 26)) ('SDH', 'Gene', '6390', (221, 224)) ('SDHB', 'Gene', (22, 26)) ('SDH', 'Gene', '6390', (22, 25)) ('loss', 'NegReg', (246, 250)) ('SDH', 'Gene', (258, 261)) ('loss-of-function', 'NegReg', (152, 168)) ('SDH', 'Gene', (107, 110)) ('silencing', 'MPA', (197, 206)) ('SDH', 'Gene', (22, 25)) ('SDH', 'Gene', (221, 224)) 37533 21997692 BRAF mutation analysis was performed to detect the previously reported exon 15 mutant. ('BRAF', 'Gene', (0, 4)) ('BRAF', 'Gene', '673', (0, 4)) ('exon', 'Var', (71, 75)) 37595 21997692 Based on knowledge of the impact of loss of any SDH - subunits inactivation of the entire SDH complex in other tumors associated with SDH-deficiency, especially paragangliomas - it is appropriate to designate this group as SDH-deficient GISTs. ('SDH', 'Gene', '6390', (224, 227)) ('paragangliomas', 'Disease', 'MESH:D010235', (161, 175)) ('tumor', 'Phenotype', 'HP:0002664', (111, 116)) ('paragangliomas', 'Phenotype', 'HP:0002668', (161, 175)) ('tumors', 'Disease', (111, 117)) ('SDH', 'Gene', (90, 93)) ('SDH', 'Gene', '6390', (48, 51)) ('tumors', 'Disease', 'MESH:D009369', (111, 117)) ('SDH', 'Gene', (224, 227)) ('SDH', 'Gene', '6390', (134, 137)) ('SDH-deficient GIST', 'Disease', 'MESH:D046152', (224, 242)) ('paragangliomas', 'Disease', (161, 175)) ('SDH-deficient GIST', 'Disease', (224, 242)) ('SDH', 'Gene', (48, 51)) ('SDH-deficiency', 'Disease', 'MESH:D007153', (134, 148)) ('paraganglioma', 'Phenotype', 'HP:0002668', (161, 174)) ('SDH', 'Gene', '6390', (90, 93)) ('SDH', 'Gene', (134, 137)) ('inactivation', 'Var', (63, 75)) ('tumors', 'Phenotype', 'HP:0002664', (111, 117)) ('SDH-deficiency', 'Disease', (134, 148)) 37607 21997692 A molecular genetic clue to SDH-deficient GIST is lack of KIT and PDGFRA mutations (wild type), found here in all analyzed SDH-deficient GISTS, similar to previous observations on a smaller number of cases. ('SDH-deficient GIST', 'Disease', (28, 46)) ('PDGFRA', 'Gene', '5156', (66, 72)) ('PDGFRA', 'Gene', (66, 72)) ('KIT', 'Gene', (58, 61)) ('SDH-deficient GIST', 'Disease', 'MESH:D046152', (123, 141)) ('SDH-deficient GIST', 'Disease', (123, 141)) ('mutations', 'Var', (73, 82)) ('SDH-deficient GIST', 'Disease', 'MESH:D046152', (28, 46)) 37608 21997692 Also, these tumors seem to be unrelated to the rare KIT/PDGFRA-wild type GISTs carrying BRAF mutations found in adult patients, more often with intestinal GISTs. ('mutations', 'Var', (93, 102)) ('BRAF', 'Gene', (88, 92)) ('BRAF', 'Gene', '673', (88, 92)) ('PDGFRA', 'Gene', '5156', (56, 62)) ('PDGFRA', 'Gene', (56, 62)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('tumors', 'Disease', (12, 18)) ('tumors', 'Phenotype', 'HP:0002664', (12, 18)) ('patients', 'Species', '9606', (118, 126)) ('tumors', 'Disease', 'MESH:D009369', (12, 18)) 37624 21997692 Carney triad patients do not have SDH germline mutations, but SDH-deficiency may be mediated by allelic losses in SDH, and losses in chromosome 1p36, the locus of SDHB, may be the alternative mechanism for loss of function of the SDH complex. ('SDH', 'Gene', '6390', (62, 65)) ('SDHB', 'Gene', '6390', (163, 167)) ('SDH', 'Gene', '6390', (114, 117)) ('SDHB', 'Gene', (163, 167)) ('SDH', 'Gene', '6390', (34, 37)) ('SDH', 'Gene', '6390', (163, 166)) ('SDH', 'Gene', (34, 37)) ('SDH', 'Gene', (62, 65)) ('patients', 'Species', '9606', (13, 21)) ('SDH', 'Gene', (230, 233)) ('SDH-deficiency', 'Disease', 'MESH:D007153', (62, 76)) ('SDH', 'Gene', (163, 166)) ('SDH', 'Gene', (114, 117)) ('losses', 'Var', (123, 129)) ('SDH', 'Gene', '6390', (230, 233)) ('losses', 'NegReg', (104, 110)) ('SDH-deficiency', 'Disease', (62, 76)) 37626 21997692 The pathogenesis is based on a loss-of-function germline mutation in SDH subunits B, C, or D, and functional loss of the other allele based on currently poorly understood mechanisms. ('SDH', 'Gene', '6390', (69, 72)) ('loss', 'NegReg', (109, 113)) ('loss-of-function', 'NegReg', (31, 47)) ('SDH', 'Gene', (69, 72)) ('germline mutation', 'Var', (48, 65)) 37629 21997692 However, 54% of patients with paragangliomas, commonly SDH-deficient tumors, were found to have germline SDH mutations in one study. ('SDH-deficient tumors', 'Disease', 'MESH:D009369', (55, 75)) ('SDH', 'Gene', (105, 108)) ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('SDH', 'Gene', '6390', (55, 58)) ('paraganglioma', 'Phenotype', 'HP:0002668', (30, 43)) ('paragangliomas', 'Disease', 'MESH:D010235', (30, 44)) ('patients', 'Species', '9606', (16, 24)) ('tumors', 'Phenotype', 'HP:0002664', (69, 75)) ('SDH', 'Gene', '6390', (105, 108)) ('SDH', 'Gene', (55, 58)) ('mutations', 'Var', (109, 118)) ('SDH-deficient tumors', 'Disease', (55, 75)) ('paragangliomas', 'Disease', (30, 44)) ('paragangliomas', 'Phenotype', 'HP:0002668', (30, 44)) 37632 21997692 SDHA mutations have been previously found in one patient with a cathecholamine-secreting adrenal paraganglioma. ('cathecholamine', 'Chemical', '-', (64, 78)) ('SDHA', 'Gene', (0, 4)) ('adrenal paraganglioma', 'Disease', (89, 110)) ('patient', 'Species', '9606', (49, 56)) ('mutations', 'Var', (5, 14)) ('found', 'Reg', (36, 41)) ('paraganglioma', 'Phenotype', 'HP:0002668', (97, 110)) ('secreting adrenal paraganglioma', 'Phenotype', 'HP:0011746', (79, 110)) ('SDHA', 'Gene', '6389', (0, 4)) ('adrenal paraganglioma', 'Disease', 'MESH:D010236', (89, 110)) 37633 21997692 Previously SDHA loss-of function mutation was reported in Leigh syndrome featuring a severe neurodegenerative disorder. ('neurodegenerative disorder', 'Disease', (92, 118)) ('SDHA', 'Gene', '6389', (11, 15)) ('mutation', 'Var', (33, 41)) ('neurodegenerative disorder', 'Phenotype', 'HP:0002180', (92, 118)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (58, 72)) ('SDHA', 'Gene', (11, 15)) ('loss-of function', 'NegReg', (16, 32)) ('Leigh syndrome', 'Disease', (58, 72)) ('neurodegenerative disorder', 'Disease', 'MESH:D019636', (92, 118)) 37695 20672008 123I-MIBG is preferred over 131I-MIBG because of higher sensitivity, lower radiation exposure, and improved imaging quality. ('123I-MIBG', 'Var', (0, 9)) ('improved', 'PosReg', (99, 107)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (0, 9)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (28, 37)) ('higher', 'PosReg', (49, 55)) 37701 20672008 Germline mutations in NF1, ret, VHL, SHDB, SDHC, and SDHD had been associated with paraganglioma. ('Germline mutations', 'Var', (0, 18)) ('NF1', 'Gene', (22, 25)) ('SDHC', 'Gene', '6391', (43, 47)) ('NF1', 'Gene', '4763', (22, 25)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('SDHD', 'Gene', (53, 57)) ('SDHD', 'Gene', '6392', (53, 57)) ('paraganglioma', 'Disease', (83, 96)) ('ret', 'Gene', (27, 30)) ('SHDB', 'Gene', (37, 41)) ('associated', 'Reg', (67, 77)) ('ret', 'Gene', '5979', (27, 30)) ('VHL', 'Disease', 'MESH:D006623', (32, 35)) ('paraganglioma', 'Disease', 'MESH:D010235', (83, 96)) ('VHL', 'Disease', (32, 35)) ('SDHC', 'Gene', (43, 47)) 37722 33491666 The longevity gene mIndy (I'm Not Dead, Yet) affects blood pressure through sympathoadrenal mechanisms Reduced expression of the plasma membrane citrate transporter INDY (acronym I'm Not Dead, Yet) extends life span in lower organisms. ('expression', 'Var', (111, 121)) ('citrate', 'Chemical', 'MESH:D019343', (145, 152)) ('INDY', 'Gene', (165, 169)) ('blood pressure', 'MPA', (53, 67)) ('INDY', 'Gene', '40049', (165, 169)) ('mIndy', 'Gene', '237831', (19, 24)) ('extends', 'PosReg', (198, 205)) ('affects', 'Reg', (45, 52)) ('life span', 'CPA', (206, 215)) ('mIndy', 'Gene', (19, 24)) 37723 33491666 Deletion of the mammalian Indy (mIndy) gene in rodents improves metabolism via mechanisms akin to caloric restriction, known to lower blood pressure (BP) by sympathoadrenal inhibition. ('lower blood pressure', 'Phenotype', 'HP:0002615', (128, 148)) ('Indy', 'Gene', '40049', (33, 37)) ('Indy', 'Gene', (33, 37)) ('mammalian', 'Species', '9606', (16, 25)) ('mIndy', 'Gene', '237831', (32, 37)) ('lower', 'NegReg', (128, 133)) ('Indy', 'Gene', (26, 30)) ('BP', 'Gene', '14563', (150, 152)) ('mIndy', 'Gene', (32, 37)) ('metabolism', 'MPA', (64, 74)) ('Indy', 'Gene', '40049', (26, 30)) ('improves', 'PosReg', (55, 63)) ('Deletion', 'Var', (0, 8)) 37724 33491666 We hypothesized that mIndy deletion attenuates sympathoadrenal support of BP. ('mIndy', 'Gene', '237831', (21, 26)) ('mIndy', 'Gene', (21, 26)) ('deletion', 'Var', (27, 35)) ('attenuates', 'NegReg', (36, 46)) ('BP', 'Gene', '14563', (74, 76)) 37729 33491666 Our data suggest that deletion of mIndy reduces sympathoadrenal support of BP and HR by attenuating catecholamine biosynthesis. ('mIndy', 'Gene', '237831', (34, 39)) ('deletion', 'Var', (22, 30)) ('mIndy', 'Gene', (34, 39)) ('attenuating', 'NegReg', (88, 99)) ('catecholamine', 'Chemical', 'MESH:D002395', (100, 113)) ('BP', 'Gene', '14563', (75, 77)) ('reduces', 'NegReg', (40, 47)) ('catecholamine biosynthesis', 'MPA', (100, 126)) 37730 33491666 Deletion of mIndy recapitulates beneficial cardiovascular and metabolic responses to caloric restriction, making it an attractive therapeutic target. ('mIndy', 'Gene', (12, 17)) ('mIndy', 'Gene', '237831', (12, 17)) ('Deletion', 'Var', (0, 8)) 37731 33491666 Deletion of mIndy reduces blood pressure and heart rate by attenuating catecholamine biosynthesis and recapitulates beneficial cardiovascular and metabolic responses to caloric restriction. ('catecholamine biosynthesis', 'MPA', (71, 97)) ('blood pressure', 'MPA', (26, 40)) ('reduces', 'NegReg', (18, 25)) ('reduces blood pressure', 'Phenotype', 'HP:0002615', (18, 40)) ('mIndy', 'Gene', (12, 17)) ('catecholamine', 'Chemical', 'MESH:D002395', (71, 84)) ('heart rate', 'MPA', (45, 55)) ('mIndy', 'Gene', '237831', (12, 17)) ('attenuating', 'NegReg', (59, 70)) ('Deletion', 'Var', (0, 8)) 37740 33491666 Deletion of mIndy protected mice from many characteristics of the cardiometabolic syndrome that develop with high-calorie feeding and aging, including adiposity, nonalcoholic fatty liver, insulin resistance, and mitochondrial dysfunction. ('mitochondrial dysfunction', 'Disease', (212, 237)) ('cardiometabolic syndrome', 'Disease', 'MESH:D061325', (66, 90)) ('nonalcoholic', 'Disease', (162, 174)) ('insulin', 'Gene', (188, 195)) ('mice', 'Species', '10090', (28, 32)) ('cardiometabolic syndrome', 'Disease', (66, 90)) ('insulin', 'Gene', '3630', (188, 195)) ('adiposity', 'Disease', (151, 160)) ('fatty liver', 'Phenotype', 'HP:0001397', (175, 186)) ('insulin resistance', 'Phenotype', 'HP:0000855', (188, 206)) ('mitochondrial dysfunction', 'Disease', 'MESH:D028361', (212, 237)) ('mIndy', 'Gene', (12, 17)) ('mitochondrial dysfunction', 'Phenotype', 'HP:0003287', (212, 237)) ('mIndy', 'Gene', '237831', (12, 17)) ('Deletion', 'Var', (0, 8)) 37741 33491666 Similarly, knockdown of mIndy in rats and mice improved glucose and lipid homeostasis. ('improved', 'PosReg', (47, 55)) ('lipid', 'Chemical', 'MESH:D008055', (68, 73)) ('glucose', 'Chemical', 'MESH:D005947', (56, 63)) ('mIndy', 'Gene', (24, 29)) ('mice', 'Species', '10090', (42, 46)) ('mIndy', 'Gene', '237831', (24, 29)) ('rats', 'Species', '10116', (33, 37)) ('knockdown', 'Var', (11, 20)) 37744 33491666 We tested the hypothesis that similar to caloric restriction, loss of mIndy reduces arterial BP and heart rate (HR) by decreasing the sympathoadrenal support in mice independently of body composition. ('mice', 'Species', '10090', (161, 165)) ('loss', 'Var', (62, 66)) ('reduces arterial BP', 'Phenotype', 'HP:0002615', (76, 95)) ('decreasing', 'NegReg', (119, 129)) ('BP', 'Gene', '14563', (93, 95)) ('mIndy', 'Gene', '237831', (70, 75)) ('reduces', 'NegReg', (76, 83)) ('mIndy', 'Gene', (70, 75)) ('heart rate', 'MPA', (100, 110)) ('sympathoadrenal support', 'MPA', (134, 157)) 37745 33491666 Radiotelemetry was used to evaluate the effect of mIndy deletion on BP and HR in young, age-matched, male mINDY-KO and WT mice fed a normal chow diet, without differences in body composition. ('deletion', 'Var', (56, 64)) ('mIndy', 'Gene', '237831', (50, 55)) ('mice', 'Species', '10090', (122, 126)) ('mINDY', 'Gene', '237831', (106, 111)) ('mINDY', 'Gene', (106, 111)) ('BP', 'Gene', '14563', (68, 70)) ('mIndy', 'Gene', (50, 55)) 37746 33491666 Moreover, we assessed autonomic cardiovascular control using state-of-the-art physiological, biochemical, and pharmacological profiling and studied the effect of the deletion of mINDY in adrenal glands, ex vivo and in cellular culture in vitro. ('deletion', 'Var', (166, 174)) ('mINDY', 'Gene', '237831', (178, 183)) ('mINDY', 'Gene', (178, 183)) 37758 33491666 Systolic BP variability in the low-frequency band was reduced by 50% with mINDY deletion (LFsys; WT = 4.8 +- 0.6 mmHg2; mINDY-KO = 2.4 +- 0.4 mmHg2; Figure 3A; P < 0.05). ('mINDY', 'Gene', (74, 79)) ('deletion', 'Var', (80, 88)) ('mINDY', 'Gene', '237831', (120, 125)) ('mINDY', 'Gene', (120, 125)) ('BP', 'Gene', '14563', (9, 11)) ('reduced', 'NegReg', (54, 61)) ('mINDY', 'Gene', '237831', (74, 79)) 37762 33491666 These findings strongly support the idea that mINDY deletion is associated with a shift of cardiovascular sympathetic and parasympathetic modulation toward parasympathetic predominance. ('cardiovascular sympathetic', 'Disease', 'MESH:D002318', (91, 117)) ('shift', 'Reg', (82, 87)) ('cardiovascular sympathetic', 'Disease', (91, 117)) ('mINDY', 'Gene', '237831', (46, 51)) ('mINDY', 'Gene', (46, 51)) ('deletion', 'Var', (52, 60)) 37763 33491666 We further investigated the sympathoadrenal system as a mediator of the beneficial cardiovascular effect of mINDY deletion. ('mINDY', 'Gene', '237831', (108, 113)) ('mINDY', 'Gene', (108, 113)) ('deletion', 'Var', (114, 122)) 37782 33491666 This small molecule inhibitor reduces mINDY-mediated citrate uptake in mouse hepatocytes with an IC50 of 0.21 muM and lowers fasting glucose levels and urinary citrate excretion in high-fat diet-induced obese mice. ('urinary citrate excretion', 'MPA', (152, 177)) ('mice', 'Species', '10090', (209, 213)) ('urinary citrate', 'Phenotype', 'HP:0012406', (152, 167)) ('inhibitor', 'Var', (20, 29)) ('mINDY', 'Gene', '237831', (38, 43)) ('citrate', 'Chemical', 'MESH:D019343', (53, 60)) ('obese', 'Disease', 'MESH:D009765', (203, 208)) ('citrate', 'Chemical', 'MESH:D019343', (160, 167)) ('lowers', 'NegReg', (118, 124)) ('mINDY', 'Gene', (38, 43)) ('glucose', 'Chemical', 'MESH:D005947', (133, 140)) ('mouse', 'Species', '10090', (71, 76)) ('reduces', 'NegReg', (30, 37)) ('obese', 'Disease', (203, 208)) 37783 33491666 We first assessed citrate uptake in MPCs with and without 1 muM of PF-06761281 and found a significant approximately 35% reduction in the presence of the mINDY inhibitor (P < 0.001, Figure 6A). ('PF-06761281', 'Var', (67, 78)) ('PF-06761281', 'Chemical', 'MESH:C000609014', (67, 78)) ('mINDY', 'Gene', '237831', (154, 159)) ('mINDY', 'Gene', (154, 159)) ('citrate uptake', 'MPA', (18, 32)) ('citrate', 'Chemical', 'MESH:D019343', (18, 25)) ('reduction', 'NegReg', (121, 130)) 37785 33491666 Previous report showed that PF-06761281 dose-dependently lowers citrate uptake in the liver, kidney, and testis with IC50 values of 1.4, 1.0, and 1.0 muM, respectively, while IC50 values in human hepatocytes are 0.74 muM and in mouse hepatocytes 0.21 muM. ('PF-06761281', 'Chemical', 'MESH:C000609014', (28, 39)) ('citrate', 'Chemical', 'MESH:D019343', (64, 71)) ('human', 'Species', '9606', (190, 195)) ('mouse', 'Species', '10090', (228, 233)) ('lowers', 'NegReg', (57, 63)) ('PF-06761281', 'Var', (28, 39)) ('citrate uptake', 'MPA', (64, 78)) 37790 33491666 Next, we assessed whether mIndy deletion can reduce steroid hormone levels and synthesis. ('deletion', 'Var', (32, 40)) ('mIndy', 'Gene', '237831', (26, 31)) ('synthesis', 'MPA', (79, 88)) ('steroid hormone levels', 'MPA', (52, 74)) ('steroid', 'Chemical', 'MESH:D013256', (52, 59)) ('reduce', 'NegReg', (45, 51)) ('mIndy', 'Gene', (26, 31)) 37800 33491666 In this setting, ejection fraction (Supplemental Figure 5C), stroke volume (Supplemental Figure 5D) and strain (Supplemental Figure 5, E and F), as well as fractional shortening, cardiac output, end-diastolic- and end-systolic volume, and end-diastolic and end-systolic left ventricle mass (Supplemental Figure 6, A-F) were similar between mINDY-KO and weight-matched WT control mice, used as the correct control group instead of WT littermates, indicating that there were no cardiac structural abnormalities associated with the deletion of mIndy and that no morphological changes accounted for the observed phenotype. ('stroke', 'Disease', (61, 67)) ('cardiac structural abnormalities', 'Disease', 'MESH:D006331', (476, 508)) ('mIndy', 'Gene', '237831', (541, 546)) ('mIndy', 'Gene', (541, 546)) ('mINDY', 'Gene', '237831', (340, 345)) ('mINDY', 'Gene', (340, 345)) ('stroke', 'Disease', 'MESH:D020521', (61, 67)) ('cardiac structural abnormalities', 'Phenotype', 'HP:0001627', (476, 508)) ('mice', 'Species', '10090', (379, 383)) ('deletion', 'Var', (529, 537)) ('cardiac structural abnormalities', 'Disease', (476, 508)) ('stroke', 'Phenotype', 'HP:0001297', (61, 67)) 37802 33491666 In this study, deletion of the longevity gene mIndy (Slc13a5) lowered BP and HR as measured by radiotelemetry. ('Slc13a5', 'Gene', (53, 60)) ('BP', 'Gene', '14563', (70, 72)) ('deletion', 'Var', (15, 23)) ('lowered', 'NegReg', (62, 69)) ('mIndy', 'Gene', (46, 51)) ('mIndy', 'Gene', '237831', (46, 51)) ('Slc13a5', 'Gene', '237831', (53, 60)) 37819 33491666 Moreover, inhibition of citrate uptake by mIndy deletion results in AMPK activation and increased mitochondrial activity. ('citrate uptake', 'MPA', (24, 38)) ('AMPK activation', 'MPA', (68, 83)) ('inhibition', 'NegReg', (10, 20)) ('mitochondrial activity', 'MPA', (98, 120)) ('citrate', 'Chemical', 'MESH:D019343', (24, 31)) ('mIndy', 'Gene', '237831', (42, 47)) ('mIndy', 'Gene', (42, 47)) ('increased', 'PosReg', (88, 97)) ('deletion', 'Var', (48, 56)) 37821 33491666 Overall, we hypothesize that the interaction between transcriptional epigenetic regulation and a change in cellular energy levels contributes to the effect of citrate on catecholamine synthesis and secretion. ('effect', 'MPA', (149, 155)) ('citrate', 'Chemical', 'MESH:D019343', (159, 166)) ('cellular energy levels', 'MPA', (107, 129)) ('catecholamine synthesis', 'MPA', (170, 193)) ('transcriptional epigenetic regulation', 'Var', (53, 90)) ('citrate', 'MPA', (159, 166)) ('catecholamine', 'Chemical', 'MESH:D002395', (170, 183)) ('change', 'Reg', (97, 103)) ('secretion', 'MPA', (198, 207)) 37833 33491666 Deletion of mIndy has previously been shown to improve metabolic disease, such as diet-induced obesity, insulin resistance, and nonalcoholic fatty liver disease in mice. ('nonalcoholic fatty liver disease', 'Disease', (128, 160)) ('insulin resistance', 'Phenotype', 'HP:0000855', (104, 122)) ('obesity', 'Disease', 'MESH:D009765', (95, 102)) ('improve', 'PosReg', (47, 54)) ('mice', 'Species', '10090', (164, 168)) ('nonalcoholic fatty liver disease', 'Disease', 'MESH:D065626', (128, 160)) ('obesity', 'Disease', (95, 102)) ('metabolic disease', 'Disease', (55, 72)) ('liver disease', 'Phenotype', 'HP:0001392', (147, 160)) ('insulin', 'Gene', (104, 111)) ('obesity', 'Phenotype', 'HP:0001513', (95, 102)) ('diet-induced obesity', 'Phenotype', 'HP:0012743', (82, 102)) ('mIndy', 'Gene', (12, 17)) ('fatty liver', 'Phenotype', 'HP:0001397', (141, 152)) ('insulin', 'Gene', '3630', (104, 111)) ('mIndy', 'Gene', '237831', (12, 17)) ('metabolic disease', 'Disease', 'MESH:D008659', (55, 72)) ('Deletion', 'Var', (0, 8)) 37843 33491666 These data indicate that deletion of mIndy is not associated with structural and/or functional abnormalities in the heart. ('mIndy', 'Gene', (37, 42)) ('deletion', 'Var', (25, 33)) ('mIndy', 'Gene', '237831', (37, 42)) ('abnormalities in the heart', 'Phenotype', 'HP:0001627', (95, 121)) 37857 33491666 Deletion or reduction of mIndy/mINDY has been shown to be protective against diet-induced metabolic disorders, including obesity, insulin resistance, and nonalcoholic fatty liver disease. ('liver disease', 'Phenotype', 'HP:0001392', (173, 186)) ('obesity', 'Phenotype', 'HP:0001513', (121, 128)) ('mINDY', 'Gene', (31, 36)) ('metabolic disorders', 'Disease', 'MESH:D008659', (90, 109)) ('metabolic disorders', 'Disease', (90, 109)) ('insulin', 'Gene', (130, 137)) ('nonalcoholic fatty liver disease', 'Disease', (154, 186)) ('reduction', 'NegReg', (12, 21)) ('mIndy', 'Gene', (25, 30)) ('insulin resistance', 'Phenotype', 'HP:0000855', (130, 148)) ('mINDY', 'Gene', '237831', (31, 36)) ('Deletion', 'Var', (0, 8)) ('obesity', 'Disease', (121, 128)) ('diet-induced', 'Disease', (77, 89)) ('mIndy', 'Gene', '237831', (25, 30)) ('fatty liver', 'Phenotype', 'HP:0001397', (167, 178)) ('nonalcoholic fatty liver disease', 'Disease', 'MESH:D065626', (154, 186)) ('obesity', 'Disease', 'MESH:D009765', (121, 128)) ('insulin', 'Gene', '3630', (130, 137)) 37858 33491666 Here, we added potentially novel pieces to generate a more complete picture of the benefits of decreasing mINDY activity by showing that deletion of mIndy also affects arterial BP and HR by reducing sympathoadrenal activity. ('affects', 'Reg', (160, 167)) ('mIndy', 'Gene', (149, 154)) ('decreasing', 'NegReg', (95, 105)) ('mINDY', 'Gene', '237831', (106, 111)) ('mINDY', 'Gene', (106, 111)) ('sympathoadrenal activity', 'MPA', (199, 223)) ('deletion', 'Var', (137, 145)) ('BP', 'Gene', '14563', (177, 179)) ('mIndy', 'Gene', '237831', (149, 154)) ('activity', 'MPA', (112, 120)) ('reducing', 'NegReg', (190, 198)) 37859 33491666 Remarkably, recent genome-wide association studies suggested that the Slc13a5 polymorphism rs16956192 contributes to variability in arterial BP. ('BP', 'Gene', '14563', (141, 143)) ('rs16956192', 'Var', (91, 101)) ('Slc13a5', 'Gene', '237831', (70, 77)) ('rs16956192', 'Mutation', 'rs16956192', (91, 101)) ('Slc13a5', 'Gene', (70, 77)) 37907 33491666 The specific mINDY-mediated citric acid uptake was obtained by subtracting off the nonspecific uptake measured in the presence of PF-06761281. ('PF-06761281', 'Var', (130, 141)) ('PF-06761281', 'Chemical', 'MESH:C000609014', (130, 141)) ('mINDY', 'Gene', '237831', (13, 18)) ('mINDY', 'Gene', (13, 18)) ('citric acid', 'Chemical', 'MESH:D019343', (28, 39)) 37936 27165774 According to current molecular biology and genetics-based taxonomy, PPGL can be divided into three different clusters characterized by: Krebs cycle reprogramming with oncometabolite accumulation or depletion (group 1a); activation of the (pseudo) hypoxia signalling pathway with increased tumour cell proliferation, invasiveness and migration (group 1b); and aberrant kinase signalling causing a pro-mitogenic and anti-apoptotic state (group 2). ('tumour', 'Disease', (289, 295)) ('invasiveness', 'CPA', (316, 328)) ('Krebs', 'Chemical', '-', (136, 141)) ('increased', 'PosReg', (279, 288)) ('hypoxia', 'Disease', 'MESH:D000860', (247, 254)) ('kinase', 'CPA', (368, 374)) ('activation', 'PosReg', (220, 230)) ('depletion', 'MPA', (198, 207)) ('PPGL', 'Chemical', '-', (68, 72)) ('tumour', 'Phenotype', 'HP:0002664', (289, 295)) ('hypoxia', 'Disease', (247, 254)) ('causing', 'Reg', (386, 393)) ('aberrant', 'Var', (359, 367)) ('tumour', 'Disease', 'MESH:D009369', (289, 295)) ('pro-mitogenic', 'PosReg', (396, 409)) ('anti-apoptotic', 'CPA', (414, 428)) ('migration', 'CPA', (333, 342)) 37960 27165774 According to a recent study, the 1-year progression-free survival of those with metastatic PPGL was 46% at diagnosis for therapy-naive patients with metastases. ('patients', 'Species', '9606', (135, 143)) ('metastases', 'Disease', (149, 159)) ('metastases', 'Disease', 'MESH:D009362', (149, 159)) ('PPGL', 'Chemical', '-', (91, 95)) ('PPGL', 'Gene', (91, 95)) ('metastatic', 'Var', (80, 90)) 37976 27165774 Truncating mutations in proteins constituting the Krebs cycle cause familial PGL syndromes types 1-5, as well as fumarate hydratase-associated PPGL (Fig. ('Truncating mutations', 'Var', (0, 20)) ('Krebs', 'Chemical', '-', (50, 55)) ('fumarate hydratase', 'Gene', '2271', (113, 131)) ('PPGL', 'Chemical', '-', (143, 147)) ('fumarate hydratase', 'Gene', (113, 131)) ('cause', 'Reg', (62, 67)) ('familial PGL syndromes types 1-5', 'Disease', (68, 100)) 37980 27165774 It was previously shown that inactivating mutations in the FH gene cause dominant hereditary leiomyomatosis and renal cell cancer. ('cancer', 'Phenotype', 'HP:0002664', (123, 129)) ('cause', 'Reg', (67, 72)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (112, 129)) ('FH', 'Gene', '2271', (59, 61)) ('inactivating mutations', 'Var', (29, 51)) ('hereditary leiomyomatosis and renal cell cancer', 'Disease', 'MESH:C535516', (82, 129)) 37981 27165774 Such mutations were recently associated with PPGL with an increased frequency of metastatic disease. ('metastatic disease', 'Disease', (81, 99)) ('mutations', 'Var', (5, 14)) ('PPGL', 'Disease', (45, 49)) ('associated', 'Reg', (29, 39)) ('PPGL', 'Chemical', '-', (45, 49)) 37982 27165774 It was recently suggested that constitutional mutations in MDH2, which encodes a third enzyme involved in the Krebs cycle, may be involved in PPGL tumourigenesis. ('MDH2', 'Gene', '4191', (59, 63)) ('mutations', 'Var', (46, 55)) ('MDH2', 'Gene', (59, 63)) ('involved', 'Reg', (130, 138)) ('PPGL tumour', 'Disease', 'MESH:D009369', (142, 153)) ('tumour', 'Phenotype', 'HP:0002664', (147, 153)) ('Krebs', 'Chemical', '-', (110, 115)) ('PPGL tumour', 'Disease', (142, 153)) 37983 27165774 Familial PGL type 1 is caused by loss of function mutations in the SDHD gene and shows near complete penetrance for parasympathetic PGL tumours that are most commonly located in the head and neck region. ('tumours', 'Phenotype', 'HP:0002664', (136, 143)) ('mutations', 'Var', (50, 59)) ('Familial PGL type 1', 'Disease', (0, 19)) ('SDHD', 'Gene', (67, 71)) ('SDHD', 'Gene', '6392', (67, 71)) ('parasympathetic PGL tumours', 'Disease', 'MESH:D010235', (116, 143)) ('parasympathetic PGL tumours', 'Disease', (116, 143)) ('tumour', 'Phenotype', 'HP:0002664', (136, 142)) ('loss of function', 'NegReg', (33, 49)) 37988 27165774 It was recently suggested that mortality is not increased in carriers of SDHD mutations compared to a normal population. ('mortality', 'Disease', (31, 40)) ('mutations', 'Var', (78, 87)) ('mortality', 'Disease', 'MESH:D003643', (31, 40)) ('SDHD', 'Gene', (73, 77)) ('SDHD', 'Gene', '6392', (73, 77)) 37989 27165774 Familial PGL type 2 is caused by loss of function mutations in the SDHAF2 gene and has so far been detected in a limited number of families. ('mutations', 'Var', (50, 59)) ('Familial PGL type 2', 'Disease', (0, 19)) ('SDHAF2', 'Gene', '54949', (67, 73)) ('SDHAF2', 'Gene', (67, 73)) ('loss of function', 'NegReg', (33, 49)) 37990 27165774 Familial PGL type 3 is caused by loss of function mutations in the SDHC gene and is mainly characterized by parasympathetic PGLs located in the head and neck region with a low risk of metastases. ('metastases', 'Disease', (184, 194)) ('SDHC', 'Gene', '6391', (67, 71)) ('mutations', 'Var', (50, 59)) ('metastases', 'Disease', 'MESH:D009362', (184, 194)) ('Familial PGL type 3', 'Disease', (0, 19)) ('SDHC', 'Gene', (67, 71)) ('loss of function', 'NegReg', (33, 49)) 37991 27165774 Familial PGL type 4 is caused by loss of function mutations in SDHB and is associated with sympathetic PGL with an increased risk of malignancy. ('SDHB', 'Gene', (63, 67)) ('malignancy', 'Disease', (133, 143)) ('sympathetic PGL', 'Disease', (91, 106)) ('mutations', 'Var', (50, 59)) ('Familial PGL type 4', 'Disease', (0, 19)) ('SDHB', 'Gene', '6390', (63, 67)) ('malignancy', 'Disease', 'MESH:D009369', (133, 143)) ('loss of function', 'NegReg', (33, 49)) 37995 27165774 Mutations in SDHx genes have also been associated with pituitary adenomas. ('pituitary adenomas', 'Disease', 'MESH:D010911', (55, 73)) ('SDHx', 'Gene', (13, 17)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (55, 73)) ('Mutations', 'Var', (0, 9)) ('associated', 'Reg', (39, 49)) ('pituitary adenomas', 'Disease', (55, 73)) 37996 27165774 Familial PGL type 5 is caused by truncating mutations in the SDHA gene. ('SDHA', 'Gene', (61, 65)) ('Familial PGL type 5', 'Disease', (0, 19)) ('truncating mutations', 'Var', (33, 53)) ('caused by', 'Reg', (23, 32)) ('SDHA', 'Gene', '6389', (61, 65)) 37997 27165774 It is thought that carriers of SDHA mutations have a low penetrance for the development of PPGL tumours, and concomitant presentation with GIST is infrequently observed. ('SDHA', 'Gene', '6389', (31, 35)) ('PPGL tumours', 'Disease', 'MESH:D009369', (91, 103)) ('PPGL tumours', 'Disease', (91, 103)) ('tumours', 'Phenotype', 'HP:0002664', (96, 103)) ('mutations', 'Var', (36, 45)) ('SDHA', 'Gene', (31, 35)) ('tumour', 'Phenotype', 'HP:0002664', (96, 102)) 37998 27165774 Constitutional loss of function mutations in the fumarate hydratase (FH) gene were recently described in patients with PPGL. ('patients', 'Species', '9606', (105, 113)) ('PPGL', 'Disease', (119, 123)) ('FH', 'Gene', '2271', (69, 71)) ('PPGL', 'Chemical', '-', (119, 123)) ('mutations', 'Var', (32, 41)) ('fumarate hydratase', 'Gene', '2271', (49, 67)) ('loss of function', 'NegReg', (15, 31)) ('fumarate hydratase', 'Gene', (49, 67)) 38000 27165774 It was previously demonstrated that germline FH mutations cause autosomal dominant hereditary leiomyomatosis and renal cell cancer. ('renal cell cancer', 'Phenotype', 'HP:0005584', (113, 130)) ('FH', 'Gene', '2271', (45, 47)) ('autosomal dominant hereditary leiomyomatosis and renal cell cancer', 'Disease', 'MESH:C535516', (64, 130)) ('cause', 'Reg', (58, 63)) ('cancer', 'Phenotype', 'HP:0002664', (124, 130)) ('mutations', 'Var', (48, 57)) 38002 27165774 Loss of function mutations in these genes causes an accumulation of succinate that inhibits EGLN1-3 enzyme activity (Fig. ('EGLN1-3', 'Gene', '54583;112398;112399', (92, 99)) ('EGLN1-3', 'Gene', (92, 99)) ('activity', 'MPA', (107, 115)) ('inhibits', 'NegReg', (83, 91)) ('succinate', 'MPA', (68, 77)) ('accumulation', 'PosReg', (52, 64)) ('Loss of function', 'NegReg', (0, 16)) ('succinate', 'Chemical', 'MESH:D019802', (68, 77)) ('mutations', 'Var', (17, 26)) 38003 27165774 Inhibition of this enzyme family causes decreased hydroxylation and subsequent ubiqutination of hypoxia-inducible factor (HIF) transcription factors, resulting in a pseudohypoxic state similar to that seen in VHL- and EPAS1-mutated tumours. ('ubiqutination', 'MPA', (79, 92)) ('tumours', 'Disease', 'MESH:D009369', (232, 239)) ('EPAS1', 'Gene', (218, 223)) ('tumours', 'Disease', (232, 239)) ('VHL', 'Gene', (209, 212)) ('pseudohypoxic state', 'MPA', (165, 184)) ('hypoxia', 'Disease', (96, 103)) ('decreased hydroxylation', 'Disease', (40, 63)) ('VHL', 'Gene', '7428', (209, 212)) ('hypoxia', 'Disease', 'MESH:D000860', (96, 103)) ('Inhibition', 'Var', (0, 10)) ('EPAS1', 'Gene', '2034', (218, 223)) ('tumour', 'Phenotype', 'HP:0002664', (232, 238)) ('decreased hydroxylation', 'Disease', 'MESH:C565044', (40, 63)) ('tumours', 'Phenotype', 'HP:0002664', (232, 239)) 38005 27165774 Tumours with FH mutations have increased levels of fumarate, and similar molecular consequences to those of SDHx-mutated tumours. ('tumours', 'Disease', 'MESH:D009369', (121, 128)) ('tumours', 'Disease', (121, 128)) ('increased', 'PosReg', (31, 40)) ('tumour', 'Phenotype', 'HP:0002664', (121, 127)) ('mutations', 'Var', (16, 25)) ('fumarate', 'Chemical', 'MESH:D005650', (51, 59)) ('tumours', 'Phenotype', 'HP:0002664', (121, 128)) ('levels of fumarate', 'MPA', (41, 59)) ('Tumours', 'Phenotype', 'HP:0002664', (0, 7)) ('FH', 'Gene', '2271', (13, 15)) 38006 27165774 Mutations in genes associated with regulation of cellular oxygen sensation and response to hypoxia have been shown to give rise to PPGL (Fig. ('hypoxia', 'Disease', (91, 98)) ('PPGL', 'Chemical', '-', (131, 135)) ('give rise', 'Reg', (118, 127)) ('oxygen', 'Chemical', 'MESH:D010100', (58, 64)) ('Mutations', 'Var', (0, 9)) ('PPGL', 'Disease', (131, 135)) ('hypoxia', 'Disease', 'MESH:D000860', (91, 98)) 38008 27165774 Gain of function mutations in the EPAS1 gene causes PGL-somatostatinoma-polycythemia syndrome. ('EPAS1', 'Gene', '2034', (34, 39)) ('EPAS1', 'Gene', (34, 39)) ('PGL-somatostatinoma-polycythemia syndrome', 'Disease', (52, 93)) ('polycythemia', 'Phenotype', 'HP:0001901', (72, 84)) ('PGL-somatostatinoma-polycythemia syndrome', 'Disease', 'MESH:D010235', (52, 93)) ('mutations', 'Var', (17, 26)) ('Gain of function', 'PosReg', (0, 16)) 38009 27165774 VHL syndrome is caused by loss of function mutations in the tumour suppressor gene VHL with an incidence of 1/36 000. ('VHL', 'Gene', '7428', (83, 86)) ('VHL syndrome', 'Disease', 'MESH:D006623', (0, 12)) ('tumour', 'Disease', 'MESH:D009369', (60, 66)) ('tumour', 'Disease', (60, 66)) ('mutations', 'Var', (43, 52)) ('VHL syndrome', 'Disease', (0, 12)) ('VHL', 'Gene', (0, 3)) ('VHL', 'Gene', '7428', (0, 3)) ('loss of function', 'NegReg', (26, 42)) ('VHL', 'Gene', (83, 86)) ('tumour', 'Phenotype', 'HP:0002664', (60, 66)) 38012 27165774 Patients with C598T mutation present with Chuvash polycythemia. ('Chuvash polycythemia', 'Disease', 'MESH:C563918', (42, 62)) ('C598T', 'Var', (14, 19)) ('C598T', 'Mutation', 'rs28940298', (14, 19)) ('polycythemia', 'Phenotype', 'HP:0001901', (50, 62)) ('Patients', 'Species', '9606', (0, 8)) ('Chuvash polycythemia', 'Disease', (42, 62)) 38015 27165774 Gain of function mutations within the EPAS1 gene that encodes the hypoxia-inducible factor-2alpha (HIF2A) protein is associated with autosomal dominant polycythemia. ('polycythemia', 'Phenotype', 'HP:0001901', (152, 164)) ('hypoxia-inducible factor-2alpha', 'Gene', '2034', (66, 97)) ('HIF2A', 'Gene', '2034', (99, 104)) ('EPAS1', 'Gene', '2034', (38, 43)) ('hypoxia-inducible factor-2alpha', 'Gene', (66, 97)) ('EPAS1', 'Gene', (38, 43)) ('HIF2A', 'Gene', (99, 104)) ('autosomal dominant polycythemia', 'Disease', (133, 164)) ('mutations', 'Var', (17, 26)) ('Gain of function', 'PosReg', (0, 16)) ('autosomal dominant polycythemia', 'Disease', 'MESH:D011086', (133, 164)) 38016 27165774 Activating amino acid transitions at HIF2A hydroxylation sites was recently described as a cause of PPGL, polycythemia and somatostatinoma. ('cause', 'Reg', (91, 96)) ('Activating amino acid transitions', 'Var', (0, 33)) ('HIF2A', 'Gene', (37, 42)) ('PPGL', 'Disease', (100, 104)) ('polycythemia', 'Phenotype', 'HP:0001901', (106, 118)) ('polycythemia and somatostatinoma', 'Disease', 'MESH:D013005', (106, 138)) ('HIF2A', 'Gene', '2034', (37, 42)) ('PPGL', 'Chemical', '-', (100, 104)) 38018 27165774 To determine the tissue distribution of somatic EPAS1 mutations, deep sequencing of peripheral blood and/or buccal swabs should be performed. ('EPAS1', 'Gene', (48, 53)) ('EPAS1', 'Gene', '2034', (48, 53)) ('mutations', 'Var', (54, 63)) 38020 27165774 Mutations in VHL and EPAS1 cause a cellular pseudohypoxic state through the stabilization of HIF transcription factor proteins (Fig. ('EPAS1', 'Gene', '2034', (21, 26)) ('VHL', 'Gene', (13, 16)) ('cause', 'Reg', (27, 32)) ('EPAS1', 'Gene', (21, 26)) ('Mutations', 'Var', (0, 9)) ('VHL', 'Gene', '7428', (13, 16)) ('stabilization', 'MPA', (76, 89)) ('cellular pseudohypoxic state', 'MPA', (35, 63)) 38021 27165774 Loss of function mutations in the VHL gene results in reduced ubiqutination of HIF transcription factors with subsequent reduction of degradation by the proteasome. ('ubiqutination of HIF transcription factors', 'MPA', (62, 104)) ('Loss of function', 'NegReg', (0, 16)) ('degradation by the proteasome', 'MPA', (134, 163)) ('reduced', 'NegReg', (54, 61)) ('VHL', 'Gene', (34, 37)) ('reduced ubiqutination', 'Phenotype', 'HP:0000742', (54, 75)) ('VHL', 'Gene', '7428', (34, 37)) ('mutations', 'Var', (17, 26)) ('reduction', 'NegReg', (121, 130)) 38023 27165774 Gain of function mutations at EPAS1 hydroxylation sites causes reduced VHL protein binding that diminishes HIF2A ubiqutination enabling HIF escape from degradation. ('EPAS1', 'Gene', '2034', (30, 35)) ('diminishes', 'NegReg', (96, 106)) ('EPAS1', 'Gene', (30, 35)) ('VHL', 'Gene', (71, 74)) ('reduced', 'NegReg', (63, 70)) ('binding', 'Interaction', (83, 90)) ('HIF2A', 'Gene', '2034', (107, 112)) ('VHL', 'Gene', '7428', (71, 74)) ('HIF2A', 'Gene', (107, 112)) ('mutations', 'Var', (17, 26)) ('Gain of function', 'PosReg', (0, 16)) 38025 27165774 Mutations in EGLN1 and EGLN2, genes that encode the proteins responsible for prolyl hydroxylation targeting HIF for degradation, may also confer susceptibility to PPGL. ('PPGL', 'Chemical', '-', (163, 167)) ('EGLN2', 'Gene', '112398', (23, 28)) ('EGLN1', 'Gene', (13, 18)) ('Mutations', 'Var', (0, 9)) ('susceptibility', 'Reg', (145, 159)) ('prolyl', 'Chemical', '-', (77, 83)) ('EGLN2', 'Gene', (23, 28)) ('EGLN1', 'Gene', '54583', (13, 18)) ('PPGL', 'Disease', (163, 167)) 38026 27165774 These tumours predominantly secrete norepinephrine, due to low expression of phenylethanolamine N-methyltransferase (PNMT), and have been linked to hypermethylation of the PNMT gene promoter. ('PNMT', 'Gene', '5409', (172, 176)) ('PNMT', 'Gene', '5409', (117, 121)) ('secrete norepinephrine', 'MPA', (28, 50)) ('norepinephrine', 'Chemical', 'MESH:D009638', (36, 50)) ('hypermethylation', 'Var', (148, 164)) ('tumour', 'Phenotype', 'HP:0002664', (6, 12)) ('expression', 'MPA', (63, 73)) ('tumours', 'Phenotype', 'HP:0002664', (6, 13)) ('low', 'NegReg', (59, 62)) ('tumours', 'Disease', 'MESH:D009369', (6, 13)) ('phenylethanolamine N-methyltransferase', 'Gene', (77, 115)) ('phenylethanolamine N-methyltransferase', 'Gene', '5409', (77, 115)) ('PNMT', 'Gene', (172, 176)) ('tumours', 'Disease', (6, 13)) ('PNMT', 'Gene', (117, 121)) 38028 27165774 Mutated genes classified as cluster 2 PPGL are tightly linked to regulation of signalling in either RAS/RAF/MAPK or (mTOR) pathways (Fig. ('mTOR', 'Gene', (117, 121)) ('mTOR', 'Gene', '2475', (117, 121)) ('Mutated genes', 'Var', (0, 13)) ('linked', 'Reg', (55, 61)) ('RAS/RAF/MAPK', 'Pathway', (100, 112)) ('PPGL', 'Chemical', '-', (38, 42)) ('PPGL', 'Gene', (38, 42)) 38031 27165774 Somatic HRAS mutations are common in PPGL, but no cases with constitutional HRAS mutation and PPGL have been presented. ('PPGL', 'Disease', (37, 41)) ('PPGL', 'Chemical', '-', (94, 98)) ('HRAS', 'Gene', '3265', (76, 80)) ('PPGL', 'Chemical', '-', (37, 41)) ('HRAS', 'Gene', '3265', (8, 12)) ('HRAS', 'Gene', (76, 80)) ('HRAS', 'Gene', (8, 12)) ('mutations', 'Var', (13, 22)) ('common', 'Reg', (27, 33)) 38032 27165774 NF1, also known as von Recklinghausen's disease, is caused by loss of function mutations in the neurofibromin 1 (NF1) gene with an incidence of 1 : 2500-3000. ("von Recklinghausen's disease", 'Disease', (19, 47)) ('neurofibromin 1', 'Gene', (96, 111)) ("von Recklinghausen's disease", 'Disease', 'MESH:C537392', (19, 47)) ('NF1', 'Gene', (113, 116)) ('NF1', 'Gene', '4763', (113, 116)) ('loss of function', 'NegReg', (62, 78)) ('NF1', 'Gene', (0, 3)) ('neurofibromin 1', 'Gene', '4763', (96, 111)) ('NF1', 'Gene', '4763', (0, 3)) ('mutations', 'Var', (79, 88)) 38035 27165774 MEN2 is caused by gain of function mutations within the RET (rearranged during transfection) gene that encodes a tyrosine kinase receptor. ('MEN2', 'Disease', (0, 4)) ('rearranged during transfection', 'Gene', '5979', (61, 91)) ('RET', 'Gene', '5979', (56, 59)) ('MEN', 'Species', '9606', (0, 3)) ('rearranged during transfection', 'Gene', (61, 91)) ('gain of function', 'PosReg', (18, 34)) ('RET', 'Gene', (56, 59)) ('mutations', 'Var', (35, 44)) 38036 27165774 MEN2 is characterized by susceptibility to multiple endocrine neoplasms: medullary thyroid carcinoma, PCC and parathyroid adenomas. ('thyroid carcinoma', 'Disease', (83, 100)) ('parathyroid adenomas', 'Disease', 'MESH:D010282', (110, 130)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (73, 100)) ('endocrine neoplasms', 'Phenotype', 'HP:0100568', (52, 71)) ('MEN', 'Species', '9606', (0, 3)) ('PCC', 'Disease', (102, 105)) ('susceptibility', 'Reg', (25, 39)) ('parathyroid adenomas', 'Disease', (110, 130)) ('parathyroid adenomas', 'Phenotype', 'HP:0002897', (110, 130)) ('endocrine neoplasms', 'Disease', (52, 71)) ('carcinoma', 'Phenotype', 'HP:0030731', (91, 100)) ('PCC', 'Phenotype', 'HP:0002666', (102, 105)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (83, 100)) ('MEN2', 'Var', (0, 4)) ('neoplasms', 'Phenotype', 'HP:0002664', (62, 71)) ('endocrine neoplasms', 'Disease', 'MESH:D004701', (52, 71)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (83, 100)) 38038 27165774 Mutations in the cysteine-rich extracellular domains located in exons 10-11 underlie a majority of MEN2 cases. ('MEN', 'Species', '9606', (99, 102)) ('underlie', 'Reg', (76, 84)) ('MEN2 cases', 'Disease', (99, 109)) ('Mutations', 'Var', (0, 9)) ('cysteine', 'Chemical', 'MESH:D003545', (17, 25)) 38039 27165774 Disease-causing variants within noncysteine regions located in exons 13-16 are less common and characterized by pronounced interpatient phenotypic heterogeneity. ('noncysteine', 'Chemical', '-', (32, 43)) ('variants', 'Var', (16, 24)) ('Disease-causing', 'Reg', (0, 15)) ('patient', 'Species', '9606', (128, 135)) 38040 27165774 Among carriers of noncysteine mutations, only a minority develops PCC. ('noncysteine', 'Chemical', '-', (18, 29)) ('PCC', 'Phenotype', 'HP:0002666', (66, 69)) ('noncysteine mutations', 'Var', (18, 39)) ('PCC', 'Disease', (66, 69)) 38042 27165774 Loss of function mutations in the TMEM127 (transmembrane protein 127) gene causes susceptibility to PCC, and less frequently abdominal PGL. ('transmembrane protein 127', 'Gene', '55654', (43, 68)) ('PCC', 'Phenotype', 'HP:0002666', (100, 103)) ('Loss of function', 'NegReg', (0, 16)) ('abdominal PGL', 'Disease', (125, 138)) ('TMEM127', 'Gene', '55654', (34, 41)) ('transmembrane protein 127', 'Gene', (43, 68)) ('PCC', 'Disease', (100, 103)) ('mutations', 'Var', (17, 26)) ('TMEM127', 'Gene', (34, 41)) 38047 27165774 Loss of function mutations in the MAX (myc-associated factor X) gene has been shown to cause hereditary PCC and less commonly PGL. ('MAX', 'Gene', '4149', (34, 37)) ('MAX', 'Gene', (34, 37)) ('myc-associated factor X', 'Gene', (39, 62)) ('Loss of function', 'NegReg', (0, 16)) ('PGL', 'Disease', (126, 129)) ('myc-associated factor X', 'Gene', '4149', (39, 62)) ('mutations', 'Var', (17, 26)) ('PCC', 'Phenotype', 'HP:0002666', (104, 107)) 38052 27165774 It has been suggested that tumours with mutations in NF1, RET and HRAS overlap with regard to their mechanisms of tumourigenesis, that diverge on RAS-mediated signalling. ('RET', 'Gene', '5979', (58, 61)) ('tumour', 'Disease', (114, 120)) ('NF1', 'Gene', (53, 56)) ('tumour', 'Phenotype', 'HP:0002664', (27, 33)) ('tumours', 'Phenotype', 'HP:0002664', (27, 34)) ('RET', 'Gene', (58, 61)) ('HRAS', 'Gene', (66, 70)) ('NF1', 'Gene', '4763', (53, 56)) ('mutations', 'Var', (40, 49)) ('tumour', 'Phenotype', 'HP:0002664', (114, 120)) ('tumour', 'Disease', 'MESH:D009369', (27, 33)) ('tumours', 'Disease', 'MESH:D009369', (27, 34)) ('tumour', 'Disease', (27, 33)) ('tumours', 'Disease', (27, 34)) ('tumour', 'Disease', 'MESH:D009369', (114, 120)) ('HRAS', 'Gene', '3265', (66, 70)) 38053 27165774 Mutations in NF1 GTPas domain result in reduced inhibition of RAS intrinsic activity, whilst ligand or mutant-dependent activation of RET results in activation of RAS through downstream signalling. ('activation', 'PosReg', (149, 159)) ('RAS intrinsic activity', 'MPA', (62, 84)) ('RET', 'Gene', (134, 137)) ('NF1', 'Gene', (13, 16)) ('activation', 'PosReg', (120, 130)) ('Mutations', 'Var', (0, 9)) ('reduced inhibition', 'NegReg', (40, 58)) ('NF1', 'Gene', '4763', (13, 16)) ('RAS', 'Protein', (163, 166)) ('RET', 'Gene', '5979', (134, 137)) ('GTPas', 'Gene', (17, 22)) 38055 27165774 Somatic gain of function mutations in H-RAS has been described in a significant proportion of PPGLs. ('mutations', 'Var', (25, 34)) ('PPGLs', 'Chemical', '-', (94, 99)) ('PPGLs', 'Disease', (94, 99)) ('H-RAS', 'Gene', '3265', (38, 43)) ('gain of function', 'PosReg', (8, 24)) ('H-RAS', 'Gene', (38, 43)) 38056 27165774 Activating mutations in RET occurs at phosphorylation sites causing intrinsic activation resulting in downstream activation of RAS/RAF/MAPK and PI3K/AKT signalling pathways. ('mutations', 'Var', (11, 20)) ('Activating', 'PosReg', (0, 10)) ('RET', 'Gene', '5979', (24, 27)) ('AKT', 'Gene', (149, 152)) ('activation', 'PosReg', (113, 123)) ('RET', 'Gene', (24, 27)) ('activation', 'PosReg', (78, 88)) ('intrinsic', 'MPA', (68, 77)) ('AKT', 'Gene', '207', (149, 152)) 38057 27165774 Loss of function mutations in TMEM127 results in reduced inhibition of the mTOR pathway in an RAS/RAF/MAPK- and PI3K/AKT-independent manner. ('AKT', 'Gene', '207', (117, 120)) ('reduced', 'NegReg', (49, 56)) ('AKT', 'Gene', (117, 120)) ('TMEM127', 'Gene', (30, 37)) ('TMEM127', 'Gene', '55654', (30, 37)) ('Loss of function', 'NegReg', (0, 16)) ('mutations', 'Var', (17, 26)) ('mTOR', 'Gene', (75, 79)) ('mTOR', 'Gene', '2475', (75, 79)) ('inhibition', 'MPA', (57, 67)) 38059 27165774 Mutated MAX causes deregulation of the MYC-MAX-MXD1 pathway that leads to altered transcription and signalling in the NRAS-PIK3CA-AKT1-mTOR pathway. ('MYC', 'Gene', '4609', (39, 42)) ('MAX', 'Gene', (43, 46)) ('PIK3CA', 'Gene', (123, 129)) ('MAX', 'Gene', (8, 11)) ('deregulation', 'MPA', (19, 31)) ('NRAS', 'Gene', '4893', (118, 122)) ('AKT1', 'Gene', '207', (130, 134)) ('MXD1', 'Gene', '4084', (47, 51)) ('mTOR', 'Gene', (135, 139)) ('MYC', 'Gene', (39, 42)) ('Mutated', 'Var', (0, 7)) ('MAX', 'Gene', '4149', (43, 46)) ('AKT1', 'Gene', (130, 134)) ('mTOR', 'Gene', '2475', (135, 139)) ('NRAS', 'Gene', (118, 122)) ('MAX', 'Gene', '4149', (8, 11)) ('PIK3CA', 'Gene', '5290', (123, 129)) ('altered', 'Reg', (74, 81)) ('MXD1', 'Gene', (47, 51)) 38061 27165774 The fact that MAX-mutated tumours are distinct from those with NF1/RET/HRAS mutations is also supported by their intermediate expression of PNMT, and subsequent lower production of epinephrine. ('lower', 'NegReg', (161, 166)) ('production of epinephrine', 'MPA', (167, 192)) ('mutations', 'Var', (76, 85)) ('MAX', 'Gene', '4149', (14, 17)) ('MAX', 'Gene', (14, 17)) ('tumours', 'Disease', (26, 33)) ('tumours', 'Disease', 'MESH:D009369', (26, 33)) ('RET', 'Gene', '5979', (67, 70)) ('tumour', 'Phenotype', 'HP:0002664', (26, 32)) ('HRAS', 'Gene', '3265', (71, 75)) ('PNMT', 'Gene', (140, 144)) ('epinephrine', 'Chemical', 'MESH:D004837', (181, 192)) ('HRAS', 'Gene', (71, 75)) ('NF1', 'Gene', (63, 66)) ('RET', 'Gene', (67, 70)) ('PNMT', 'Gene', '5409', (140, 144)) ('tumours', 'Phenotype', 'HP:0002664', (26, 33)) ('NF1', 'Gene', '4763', (63, 66)) 38066 27165774 VHL-mutated PPGLs show loss of 3p and 11p, whereas those with NF1 mutations show loss of 17q. ('mutations', 'Var', (66, 75)) ('PPGLs', 'Chemical', '-', (12, 17)) ('PPGLs', 'Gene', (12, 17)) ('NF1', 'Gene', (62, 65)) ('VHL', 'Gene', (0, 3)) ('loss', 'NegReg', (23, 27)) ('NF1', 'Gene', '4763', (62, 65)) ('VHL', 'Gene', '7428', (0, 3)) ('11p', 'MPA', (38, 41)) 38070 27165774 Novel findings indicate that somatic ATRX mutations occur in a subset of PPGLs that display a high frequency of metastatic disease. ('PPGLs', 'Gene', (73, 78)) ('metastatic disease', 'Disease', (112, 130)) ('ATRX', 'Gene', '546', (37, 41)) ('ATRX', 'Gene', (37, 41)) ('PPGLs', 'Chemical', '-', (73, 78)) ('mutations', 'Var', (42, 51)) 38071 27165774 Extrapolating findings from other neuroendocrine tumours, inactivation of ATRX is most probably a secondary event that promotes malignancy through establishing the alternative lengthening of telomeres phenotype. ('neuroendocrine tumours', 'Disease', (34, 56)) ('promotes', 'PosReg', (119, 127)) ('malignancy', 'Disease', 'MESH:D009369', (128, 138)) ('ATRX', 'Gene', '546', (74, 78)) ('inactivation', 'Var', (58, 70)) ('tumour', 'Phenotype', 'HP:0002664', (49, 55)) ('tumours', 'Phenotype', 'HP:0002664', (49, 56)) ('malignancy', 'Disease', (128, 138)) ('neuroendocrine tumours', 'Disease', 'MESH:D018358', (34, 56)) ('ATRX', 'Gene', (74, 78)) 38072 27165774 Somatic mutations in the TERT promoter (SDHx-deficient PPGL), as well as in the chromatin modifier KMT2D, have also been identified but remain to be validated by independent observers. ('TERT', 'Gene', (25, 29)) ('SDHx-deficient PPGL', 'Disease', 'MESH:D007153', (40, 59)) ('mutations', 'Var', (8, 17)) ('KMT2D', 'Gene', '8085', (99, 104)) ('SDHx-deficient PPGL', 'Disease', (40, 59)) ('KMT2D', 'Gene', (99, 104)) ('TERT', 'Gene', '7015', (25, 29)) 38073 27165774 It has also been demonstrated that metastases accumulate chromosomal aberrations compared to the paired primary tumours. ('tumours', 'Phenotype', 'HP:0002664', (112, 119)) ('metastases', 'Disease', 'MESH:D009362', (35, 45)) ('tumours', 'Disease', 'MESH:D009369', (112, 119)) ('tumours', 'Disease', (112, 119)) ('tumour', 'Phenotype', 'HP:0002664', (112, 118)) ('chromosomal aberrations', 'Var', (57, 80)) ('chromosomal aberrations', 'Phenotype', 'HP:0040012', (57, 80)) ('metastases', 'Disease', (35, 45)) 38075 27165774 ATRX, KMT2D and TERT promoter have also been identified with recurrent mutations but their contribution to the disease remains to be identified. ('TERT', 'Gene', (16, 20)) ('ATRX', 'Gene', (0, 4)) ('TERT', 'Gene', '7015', (16, 20)) ('mutations', 'Var', (71, 80)) ('ATRX', 'Gene', '546', (0, 4)) ('KMT2D', 'Gene', (6, 11)) ('KMT2D', 'Gene', '8085', (6, 11)) 38077 27165774 Recurrent copy number alterations as well as miRNA and methylation patterns have been identified, but the particular mechanisms in which these events are involved in PPGL tumourigenesis remain to be clarified. ('tumour', 'Phenotype', 'HP:0002664', (171, 177)) ('PPGL tumour', 'Disease', 'MESH:D009369', (166, 177)) ('miRNA', 'MPA', (45, 50)) ('copy number', 'Var', (10, 21)) ('PPGL tumour', 'Disease', (166, 177)) 38081 27165774 Whether specific epimutations can be directly linked to tumour formation or malignancy remains to be determined. ('malignancy', 'Disease', 'MESH:D009369', (76, 86)) ('tumour', 'Phenotype', 'HP:0002664', (56, 62)) ('malignancy', 'Disease', (76, 86)) ('linked', 'Reg', (46, 52)) ('tumour', 'Disease', 'MESH:D009369', (56, 62)) ('tumour', 'Disease', (56, 62)) ('epimutations', 'Var', (17, 29)) 38082 27165774 Of particular interest for PPGLs was the recent identification of epimutated SDHC as a cause of GIST. ('SDHC', 'Gene', (77, 81)) ('SDHC', 'Gene', '6391', (77, 81)) ('GIST', 'Disease', (96, 100)) ('cause', 'Reg', (87, 92)) ('PPGLs', 'Chemical', '-', (27, 32)) ('epimutated', 'Var', (66, 76)) 38085 27165774 This includes poor cost effectiveness and long analysis times especially for extensive analyses such as genes of interest in PPGL. ('genes', 'Var', (104, 109)) ('PPGL', 'Chemical', '-', (125, 129)) ('PPGL', 'Gene', (125, 129)) 38090 27165774 A similar approach might soon be used for familial PGL syndromes where patients with SDHB mutations have been most commonly studied. ('mutations', 'Var', (90, 99)) ('patients', 'Species', '9606', (71, 79)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('familial PGL syndromes', 'Disease', (42, 64)) 38091 27165774 SDHB carriers have a substantially increased risk of malignant tumours as well as higher mortality, which motivates extensive follow-up. ('mortality', 'Disease', 'MESH:D003643', (89, 98)) ('malignant tumours', 'Disease', 'MESH:D009369', (53, 70)) ('malignant tumours', 'Disease', (53, 70)) ('carriers', 'Var', (5, 13)) ('tumour', 'Phenotype', 'HP:0002664', (63, 69)) ('mortality', 'Disease', (89, 98)) ('SDHB', 'Gene', '6390', (0, 4)) ('tumours', 'Phenotype', 'HP:0002664', (63, 70)) ('SDHB', 'Gene', (0, 4)) 38095 27165774 Tumours with mutations in FH, VHL, EPAS1 and succinate dehydrogenase complex genes predominantly produce norepinephrine with low levels of epinephrine. ('succinate', 'Chemical', 'MESH:D019802', (45, 54)) ('norepinephrine', 'Chemical', 'MESH:D009638', (105, 119)) ('VHL', 'Gene', (30, 33)) ('produce norepinephrine', 'MPA', (97, 119)) ('VHL', 'Gene', '7428', (30, 33)) ('EPAS1', 'Gene', '2034', (35, 40)) ('FH', 'Gene', '2271', (26, 28)) ('epinephrine', 'Chemical', 'MESH:D004837', (108, 119)) ('mutations', 'Var', (13, 22)) ('EPAS1', 'Gene', (35, 40)) ('Tumours', 'Phenotype', 'HP:0002664', (0, 7)) ('epinephrine', 'Chemical', 'MESH:D004837', (139, 150)) 38096 27165774 Tumours with RET, NF1, TMEM127, MAX and HRAS mutations show increased levels of both epinephrine and norepinephrine. ('epinephrine', 'Chemical', 'MESH:D004837', (85, 96)) ('norepinephrine', 'Chemical', 'MESH:D009638', (101, 115)) ('mutations', 'Var', (45, 54)) ('RET', 'Gene', (13, 16)) ('NF1', 'Gene', (18, 21)) ('RET', 'Gene', '5979', (13, 16)) ('HRAS', 'Gene', '3265', (40, 44)) ('TMEM127', 'Gene', (23, 30)) ('MAX', 'Gene', (32, 35)) ('norepinephrine', 'MPA', (101, 115)) ('TMEM127', 'Gene', '55654', (23, 30)) ('MAX', 'Gene', '4149', (32, 35)) ('levels of', 'MPA', (70, 79)) ('epinephrine', 'Chemical', 'MESH:D004837', (104, 115)) ('HRAS', 'Gene', (40, 44)) ('Tumours', 'Phenotype', 'HP:0002664', (0, 7)) ('increased', 'PosReg', (60, 69)) ('NF1', 'Gene', '4763', (18, 21)) 38106 27165774 The identification of deregulated telomere maintenance, especially in the alternative lengthening of telomeres (ALT) context, may have therapeutic implications as such tumours have been shown to respond to ATR inhibition. ('deregulated', 'Var', (22, 33)) ('tumour', 'Phenotype', 'HP:0002664', (168, 174)) ('tumours', 'Phenotype', 'HP:0002664', (168, 175)) ('ATR', 'Gene', '545', (206, 209)) ('ATR', 'Gene', (206, 209)) ('tumours', 'Disease', 'MESH:D009369', (168, 175)) ('tumours', 'Disease', (168, 175)) ('telomere', 'Protein', (34, 42)) 38107 27165774 It has been demonstrated that succinate dehydrogenase-deficient PPGLs exhibit a hypermethylator phenotype, and related tumours (GIST) have shown epimutations in SDHC. ('SDHC', 'Gene', (161, 165)) ('exhibit', 'Reg', (70, 77)) ('tumour', 'Phenotype', 'HP:0002664', (119, 125)) ('tumours', 'Phenotype', 'HP:0002664', (119, 126)) ('hypermethylator phenotype', 'MPA', (80, 105)) ('tumours', 'Disease', 'MESH:D009369', (119, 126)) ('PPGLs', 'Chemical', '-', (64, 69)) ('SDHC', 'Gene', '6391', (161, 165)) ('epimutations', 'Var', (145, 157)) ('tumours', 'Disease', (119, 126)) ('PPGLs', 'Gene', (64, 69)) ('succinate', 'Chemical', 'MESH:D019802', (30, 39)) 38165 31288201 There have been 10 identified gene sites where mutation has led to the development of these tumors. ('tumors', 'Disease', 'MESH:D009369', (92, 98)) ('mutation', 'Var', (47, 55)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('led to', 'Reg', (60, 66)) ('tumors', 'Disease', (92, 98)) ('tumors', 'Phenotype', 'HP:0002664', (92, 98)) 38309 29386252 Tumour risks and genotype-phenotype correlations associated with germline variants in succinate dehydrogenase subunit genes SDHB, SDHC and SDHD Germline pathogenic variants in SDHB/SDHC/SDHD are the most frequent causes of inherited phaeochromocytomas/paragangliomas. ('SDHC', 'Gene', (181, 185)) ('SDHD', 'Gene', (186, 190)) ('SDHD', 'Gene', (139, 143)) ('SDHB', 'Gene', (176, 180)) ('SDHC', 'Gene', '6391', (130, 134)) ('variants', 'Var', (164, 172)) ('SDH', 'Gene', '6390', (176, 179)) ('succinate dehydrogenase', 'Gene', '6390', (86, 109)) ('Tumour', 'Phenotype', 'HP:0002664', (0, 6)) ('phaeochromocytomas', 'Disease', 'MESH:D010673', (233, 251)) ('variants', 'Var', (74, 82)) ('SDH', 'Gene', (186, 189)) ('SDHB', 'Gene', '6390', (124, 128)) ('phaeochromocytomas/paragangliomas', 'Disease', 'MESH:D010235', (233, 266)) ('SDH', 'Gene', (139, 142)) ('SDH', 'Gene', (130, 133)) ('frequent causes', 'Reg', (204, 219)) ('SDH', 'Gene', (176, 179)) ('phaeochromocytoma', 'Disease', (233, 250)) ('SDH', 'Gene', '6390', (181, 184)) ('SDHC', 'Gene', (130, 134)) ('SDHB', 'Gene', (124, 128)) ('paragangliomas', 'Phenotype', 'HP:0002668', (252, 266)) ('paraganglioma', 'Phenotype', 'HP:0002668', (252, 265)) ('succinate', 'Chemical', 'MESH:D019802', (86, 95)) ('SDH', 'Gene', '6390', (124, 127)) ('succinate dehydrogenase', 'Gene', (86, 109)) ('phaeochromocytomas', 'Disease', (233, 251)) ('SDHC', 'Gene', '6391', (181, 185)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (233, 250)) ('SDHB', 'Gene', '6390', (176, 180)) ('SDHD', 'Gene', '6392', (186, 190)) ('SDHD', 'Gene', '6392', (139, 143)) ('phaeochromocytomas/paragangliomas', 'Disease', (233, 266)) ('SDH', 'Gene', (181, 184)) ('SDH', 'Gene', '6390', (186, 189)) ('SDH', 'Gene', '6390', (139, 142)) ('SDH', 'Gene', (124, 127)) ('SDH', 'Gene', '6390', (130, 133)) 38311 29386252 We estimate penetrance for symptomatic tumours and elucidate genotype-phenotype correlations in a large cohort of SDHB/SDHC/SDHD mutation carriers. ('SDHB/SDHC/SDHD', 'Gene', (114, 128)) ('tumours', 'Phenotype', 'HP:0002664', (39, 46)) ('mutation', 'Var', (129, 137)) ('tumour', 'Disease', (39, 45)) ('tumours', 'Disease', 'MESH:D009369', (39, 46)) ('tumours', 'Disease', (39, 46)) ('tumour', 'Phenotype', 'HP:0002664', (39, 45)) ('tumour', 'Disease', 'MESH:D009369', (39, 45)) 38313 29386252 876 patients (401 previously reported) had a germline mutation in SDHB/SDHC/SDHD (n=673/43/160). ('germline mutation', 'Var', (45, 62)) ('SDHB/SDHC/SDHD', 'Gene', (66, 80)) ('patient', 'Species', '9606', (4, 11)) ('patients', 'Species', '9606', (4, 12)) 38314 29386252 In addition to tumour type susceptibility differences for individual genes, we confirmed that the SDHD:p.Pro81Leu mutation has a distinct phenotype and identified increased age-related tumour risks with highly destabilising SDHB missense mutations. ('tumour type', 'Disease', (15, 26)) ('missense mutations', 'Var', (229, 247)) ('tumour type', 'Disease', 'MESH:D009369', (15, 26)) ('increased', 'PosReg', (163, 172)) ('tumour', 'Phenotype', 'HP:0002664', (185, 191)) ('SDHD:p.Pro81Leu', 'SUBSTITUTION', 'None', (98, 113)) ('SDHD:p.Pro81Leu', 'Var', (98, 113)) ('SDHB', 'Gene', (224, 228)) ('tumour', 'Phenotype', 'HP:0002664', (15, 21)) 38315 29386252 Risk of malignant disease at age 60 years in non-proband SDHB mutation carriers was 4.2%(95% CI 1.1% to 7.2%). ('malignant disease', 'Disease', (8, 25)) ('to 7', 'Species', '1214577', (101, 105)) ('mutation', 'Var', (62, 70)) ('SDHB', 'Gene', (57, 61)) ('malignant disease', 'Disease', 'MESH:D009369', (8, 25)) 38319 29386252 SDHB mutations are associated with a higher risk of malignancy and renal carcinoma than mutations in other subunits. ('malignancy and renal carcinoma', 'Disease', 'MESH:C538614', (52, 82)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (67, 82)) ('malignancy', 'Disease', 'MESH:D009369', (52, 62)) ('malignancy', 'Disease', (52, 62)) ('mutations', 'Var', (5, 14)) ('SDHB', 'Gene', (0, 4)) ('carcinoma', 'Phenotype', 'HP:0030731', (73, 82)) 38320 29386252 We provide more accurate estimates of tumour-specific risks, confirm the mutation-specific phenotype of the SDHD p.Pro81Leu mutation and identify a novel candidate genotype-phenotype association of SDHB missense mutations with effects on SDHB protein stability. ('effects', 'Reg', (227, 234)) ('tumour', 'Phenotype', 'HP:0002664', (38, 44)) ('missense mutations', 'Var', (203, 221)) ('SDHB', 'Gene', (198, 202)) ('p.Pro81Leu', 'Var', (113, 123)) ('protein stability', 'MPA', (243, 260)) ('p.Pro81Leu', 'SUBSTITUTION', 'None', (113, 123)) 38321 29386252 The study sample consisted of men and women referred for SDHB/SDHC/SDHD mutation analysis in National Health Service diagnostic laboratories for a personal or family history of PPGL/HNPGL. ('PPGL/HNPGL', 'Disease', (177, 187)) ('women', 'Species', '9606', (38, 43)) ('SDHB/SDHC/SDHD', 'Gene', (57, 71)) ('mutation', 'Var', (72, 80)) 38325 29386252 The DUET and mCSM-PPI scoring systems were used to predict the structural consequences of missense mutations on protein stability and protein-protein affinity, respectively, using the models of SDHB, SDHD and the succinate complex (see supplementary information). ('protein-protein affinity', 'MPA', (134, 158)) ('SDHB', 'Gene', (194, 198)) ('DUET', 'Gene', (4, 8)) ('missense mutations', 'Var', (90, 108)) ('DUET', 'Gene', '8997', (4, 8)) ('protein stability', 'MPA', (112, 129)) 38326 29386252 There were a number of recurrent mutations, for example, SDHB splice-site c.72+1G>T and SDHD missense c.242C>T (p.Pro81Leu) mutations accounted for 20% of probands, and the 10 most common mutations accounted for 48% (see online supplementary figure 3). ('c.72+1G>T', 'Var', (74, 83)) ('SDHD', 'Gene', (88, 92)) ('p.Pro81Leu', 'Var', (112, 122)) ('c.72+1G>T', 'Mutation', 'rs587782703', (74, 83)) ('c.242C>T', 'Mutation', 'rs80338844', (102, 110)) ('SDHB', 'Gene', (57, 61)) ('missense c.242C>T', 'Var', (93, 110)) ('p.Pro81Leu', 'SUBSTITUTION', 'None', (112, 122)) 38328 29386252 No further thyroid tumours were found beyond the three described previously in SDHB mutation carriers, giving an estimated penetrance of thyroid tumours by age 60 years of 1.5% (95% CI 0.0% to 3.1%) (calculated by Kaplan-Meier analysis of all SDHB mutation carriers). ('tumours', 'Phenotype', 'HP:0002664', (19, 26)) ('mutation', 'Var', (84, 92)) ('thyroid tumours', 'Disease', 'MESH:D013964', (11, 26)) ('tumours', 'Phenotype', 'HP:0002664', (145, 152)) ('SDHB', 'Gene', (243, 247)) ('thyroid tumours', 'Disease', 'MESH:D013964', (137, 152)) ('tumour', 'Phenotype', 'HP:0002664', (145, 151)) ('thyroid tumours', 'Disease', (11, 26)) ('thyroid tumours', 'Disease', (137, 152)) ('tumour', 'Phenotype', 'HP:0002664', (19, 25)) ('SDHB', 'Gene', (79, 83)) 38330 29386252 Of the 21 disease-associated SDHB missense mutations, 20 are predicted to be destabilising, 16 are predicted to destabilise the complex and 4 (p.Cys98Arg, p.Cys101Tyr, p.Cys113Tyr and p.Cys196Tyr) are in metal coordinating cysteines. ('p.Cys113Tyr', 'Var', (168, 179)) ('p.Cys98Arg', 'Mutation', 'p.C98R', (143, 153)) ('cysteines', 'Chemical', 'MESH:D003545', (223, 232)) ('destabilise', 'NegReg', (112, 123)) ('disease-associated', 'Reg', (10, 28)) ('p.Cys101Tyr', 'Var', (155, 166)) ('p.Cys196Tyr', 'Mutation', 'rs876658367', (184, 195)) ('missense mutations', 'Var', (34, 52)) ('SDHB', 'Gene', (29, 33)) ('p.Cys113Tyr', 'Mutation', 'p.C113Y', (168, 179)) ('metal', 'Chemical', 'MESH:D008670', (204, 209)) ('complex', 'MPA', (128, 135)) ('p.Cys98Arg', 'Var', (143, 153)) ('p.Cys101Tyr', 'Mutation', 'rs74315371', (155, 166)) ('p.Cys196Tyr', 'Var', (184, 195)) 38331 29386252 The most destabilising SDHB missense mutation, p.Ile127Ser, affected an isoleucine residue buried deep in the protein with a strong network of intramolecular hydrophobic interactions (figure 3A). ('isoleucine residue buried', 'MPA', (72, 97)) ('affected', 'Reg', (60, 68)) ('isoleucine', 'Chemical', 'MESH:D007532', (72, 82)) ('p.Ile127Ser', 'Var', (47, 58)) ('p.Ile127Ser', 'Mutation', 'rs786201095', (47, 58)) ('SDHB', 'Gene', (23, 27)) 38332 29386252 The three SDHB mutations not predicted to alter protein stability were all predicted to affect the coordination of an iron-sulphur cluster, either directly or by affecting neighbourhood residues (figure 3B). ('affect', 'Reg', (88, 94)) ('neighbourhood residues', 'MPA', (172, 194)) ('mutations', 'Var', (15, 24)) ('affecting', 'Reg', (162, 171)) ('iron', 'Chemical', 'MESH:D007501', (118, 122)) ('coordination of an iron-sulphur cluster', 'MPA', (99, 138)) ('SDHB', 'Gene', (10, 14)) 38334 29386252 The p.Pro81Leu mutation is predicted to have a very mild effect on protein stability. ('protein stability', 'MPA', (67, 84)) ('p.Pro81Leu', 'SUBSTITUTION', 'None', (4, 14)) ('p.Pro81Leu', 'Var', (4, 14)) 38335 29386252 Excluding the cases originally analysed by Ricketts et al to create a replication cohort confirmed the lower risk of PPGL in SDHD p.Pro81Leu mutation carriers versus other SDHD mutation carriers (P=0.031, data not shown). ('p.Pro81Leu', 'SUBSTITUTION', 'None', (131, 141)) ('lower', 'NegReg', (104, 109)) ('SDHD', 'Gene', (126, 130)) ('p.Pro81Leu', 'Var', (131, 141)) ('PPGL', 'Disease', (118, 122)) 38336 29386252 However, there was a higher overall penetrance for clinical disease (all tumour risk) (P=0.0047) and PPGL risk (P=0.00024) in p.Ile127Ser mutation carriers (the missense mutation with the highest DUET score for predicted protein instability) compared with other missense mutations. ('PPGL', 'Gene', (101, 105)) ('p.Ile127Ser', 'Var', (126, 137)) ('tumour', 'Phenotype', 'HP:0002664', (73, 79)) ('higher', 'PosReg', (21, 27)) ('clinical disease', 'Disease', (51, 67)) ('p.Ile127Ser', 'SUBSTITUTION', 'None', (126, 137)) 38338 29386252 Bickmann et al and Bourdeau et al both describe SDHC p.Arg133X mutation carriers (a mutation that is also common in our cohort) presenting with extra-adrenal paragangliomas and HNPGLs, both benign and malignant. ('HNPGLs', 'Disease', (179, 185)) ('p.Arg133X', 'Mutation', 'rs764575966', (55, 64)) ('paraganglioma', 'Phenotype', 'HP:0002668', (160, 173)) ('p.Arg133X mutation', 'Var', (55, 73)) ('extra-adrenal paragangliomas', 'Disease', (146, 174)) ('SDHC', 'Gene', (50, 54)) ('paragangliomas', 'Phenotype', 'HP:0002668', (160, 174)) 38339 29386252 Our findings of SDHC mutation carriers with extra-adrenal paragangliomas, pheochromocytoma and a case of HNPGL with malignant features are consistent with similar tumour risks with SDHC and paternally inherited SDHD mutations (Lefebvre and Foulkes recommend similar tumour screening for SDHC and SDHD mutation carriers). ('SDHC', 'Gene', (16, 20)) ('SDHC', 'Gene', (181, 185)) ('paraganglioma', 'Phenotype', 'HP:0002668', (58, 71)) ('paragangliomas', 'Phenotype', 'HP:0002668', (58, 72)) ('SDHD', 'Gene', (211, 215)) ('tumour', 'Phenotype', 'HP:0002664', (163, 169)) ('mutation', 'Var', (21, 29)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (74, 90)) ('tumour', 'Phenotype', 'HP:0002664', (266, 272)) ('mutations', 'Var', (216, 225)) ('extra-adrenal paragangliomas, pheochromocytoma', 'Disease', 'MESH:D010673', (44, 90)) 38340 29386252 We replicated our previous finding that SDHD p.Pro81Leu mutation carriers manifest almost exclusively with HNPGL, while other SDHD mutation types predispose to both HNPGLs and PPGLs. ('HNPGLs', 'Disease', (165, 171)) ('SDHD', 'Gene', (40, 44)) ('p.Pro81Leu', 'SUBSTITUTION', 'None', (45, 55)) ('HNPGL', 'Disease', (107, 112)) ('p.Pro81Leu', 'Var', (45, 55)) 38343 29386252 SDHD has a key role in anchoring the SDH complex to the inner mitochondrial membrane, and a truncating SDHD mutation would inactivate the function of the entire SDH complex and be predicted to lead to disordered signalling in the hypoxic gene response pathway and to epigenetic abnormalities resulting from inhibition of enzymes such as prolyl-hydroxylases and ten-eleven translocation enzymes. ('truncating', 'Var', (92, 102)) ('hypoxic', 'Disease', 'MESH:D000860', (230, 237)) ('disordered', 'Disease', 'MESH:D030342', (201, 211)) ('SDHD', 'Gene', (103, 107)) ('inhibition', 'NegReg', (307, 317)) ('hypoxic', 'Disease', (230, 237)) ('disordered', 'Disease', (201, 211)) ('ten-eleven translocation enzymes', 'Enzyme', (361, 393)) ('function', 'MPA', (138, 146)) ('inactivate', 'NegReg', (123, 133)) ('epigenetic abnormalities', 'MPA', (267, 291)) ('mutation', 'Var', (108, 116)) ('lead to', 'Reg', (193, 200)) 38344 29386252 The SDHD p.Pro81Leu mutation is predicted not to cause protein instability but to interfere with ubiquinone metabolism/electron transport by changing the folding of helix 1S and by destroying a ubiquinone binding site. ('changing', 'Reg', (141, 149)) ('interfere', 'NegReg', (82, 91)) ('p.Pro81Leu', 'SUBSTITUTION', 'None', (9, 19)) ('ubiquinone', 'Chemical', 'MESH:D014451', (194, 204)) ('destroying', 'NegReg', (181, 191)) ('folding of', 'MPA', (154, 164)) ('ubiquinone binding site', 'MPA', (194, 217)) ('SDHD', 'Gene', (4, 8)) ('ubiquinone metabolism/electron transport', 'MPA', (97, 137)) ('ubiquinone', 'Chemical', 'MESH:D014451', (97, 107)) ('p.Pro81Leu', 'Var', (9, 19)) 38345 29386252 The small risk of PPGL with the p.Pro81Leu mutations suggests that PPGL and HNPGL result from impairment of different aspects of the function of the SDH complex. ('PPGL', 'Disease', (67, 71)) ('function', 'MPA', (133, 141)) ('p.Pro81Leu', 'Var', (32, 42)) ('impairment', 'NegReg', (94, 104)) ('PPGL', 'Disease', (18, 22)) ('p.Pro81Leu', 'SUBSTITUTION', 'None', (32, 42)) ('SDH', 'Protein', (149, 152)) 38347 29386252 We also found a variety of rarer tumour types in individuals with SDHB/SDHC/SDHD mutations, including renal cell carcinoma (RCC), GIST, thyroid and pituitary tumours. ('RCC', 'Disease', (124, 127)) ('tumour', 'Phenotype', 'HP:0002664', (158, 164)) ('RCC', 'Disease', 'MESH:C538614', (124, 127)) ('tumours', 'Phenotype', 'HP:0002664', (158, 165)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (102, 122)) ('tumour', 'Phenotype', 'HP:0002664', (33, 39)) ('renal cell carcinoma', 'Disease', (102, 122)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (148, 164)) ('pituitary tumours', 'Disease', (148, 165)) ('mutations', 'Var', (81, 90)) ('carcinoma', 'Phenotype', 'HP:0030731', (113, 122)) ('thyroid', 'Disease', (136, 143)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (102, 122)) ('SDHB/SDHC/SDHD', 'Gene', (66, 80)) ('GIST', 'Disease', (130, 134)) ('pituitary tumours', 'Disease', 'MESH:D010911', (148, 165)) 38349 29386252 Thus, in a study of 30 SDHx mutation carriers, a tumour was detected in one patient after 1 year follow-up from normal baseline imaging. ('SDHx', 'Gene', (23, 27)) ('mutation', 'Var', (28, 36)) ('SDHx', 'Chemical', '-', (23, 27)) ('tumour', 'Phenotype', 'HP:0002664', (49, 55)) 38409 26874200 There was no significant correlation between the MN, NMN, and 3-MT concentrations in saliva and plasma in the seated position (T1), rhos= .08 (P=0.81), rhos=0.33 (P= 0.32) and rhos=-0.32 (P=0.37) respectively (Figure 1). ('rhos=0.33', 'Var', (152, 161)) ('NMN', 'Chemical', 'MESH:D009647', (53, 56)) ('rhos= .08', 'Var', (132, 141)) ('rhos=-0.32', 'Var', (176, 186)) 38410 26874200 There was also no significant relationship between MN, NMN, and 3-MT concentration in saliva and plasma in supine position (T3), rhos=0.31 (P=0.36), rhos=0.57 (P=0.07) and rhos=-0.33 (P=0.36) (Figure 1). ('3-MT', 'MPA', (64, 68)) ('rhos=0.57', 'Var', (149, 158)) ('NMN', 'Chemical', 'MESH:D009647', (55, 58)) 38550 26992356 Among patients with surgically or biochemically confirmed MTC and Bethesda III/IV cytology, one of the 17 (5.9%) RET proto-oncogene tested patients was newly found to harbor a germline DNA mutation (Supplementary Table S1). ('MTC', 'Phenotype', 'HP:0002865', (58, 61)) ('patients', 'Species', '9606', (139, 147)) ('RET', 'Gene', (113, 116)) ('men', 'Species', '9606', (205, 208)) ('germline DNA mutation', 'Var', (176, 197)) ('patients', 'Species', '9606', (6, 14)) ('RET', 'Gene', '5979', (113, 116)) 38573 26992356 Clinical utility is established when a test improves the net health benefit for the patients and/or population in which it is used. ('patients', 'Species', '9606', (84, 92)) ('net health benefit', 'MPA', (57, 75)) ('test', 'Var', (39, 43)) ('improves', 'PosReg', (44, 52)) 38578 26992356 Contrary to guideline recommendations, only 30/43 MTC patients identified in this series underwent RET proto-oncogene mutation testing. ('RET', 'Gene', (99, 102)) ('patients', 'Species', '9606', (54, 62)) ('mutation', 'Var', (118, 126)) ('MTC', 'Phenotype', 'HP:0002865', (50, 53)) ('RET', 'Gene', '5979', (99, 102)) ('men', 'Species', '9606', (27, 30)) 38579 26992356 Of the 30 tested MTC patients, three (10% [CI 3-28%]) were found to harbor a germline RET mutation, which carries significant implications for the patient's family (Supplementary Table S1). ('RET', 'Gene', '5979', (86, 89)) ('germline', 'Var', (77, 85)) ('patient', 'Species', '9606', (21, 28)) ('patient', 'Species', '9606', (147, 154)) ('patients', 'Species', '9606', (21, 29)) ('RET', 'Gene', (86, 89)) ('men', 'Species', '9606', (171, 174)) ('MTC', 'Phenotype', 'HP:0002865', (17, 20)) 38613 26971069 After consultation with a tumor specialist, the patient underwent amputation of the distal phalanx of the right thumb (Figure 3). ('tumor', 'Disease', 'MESH:D009369', (26, 31)) ('patient', 'Species', '9606', (48, 55)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('tumor', 'Disease', (26, 31)) ('amputation', 'Var', (66, 76)) 38630 26971069 Positivity of protein S-100, chromogranin A, and synaptophysin are considered confirmatory for the diagnosis. ('chromogranin A', 'Gene', '1113', (29, 43)) ('synaptophysin', 'Gene', '6855', (49, 62)) ('chromogranin A', 'Gene', (29, 43)) ('S-100', 'Gene', '6271', (22, 27)) ('Positivity', 'Var', (0, 10)) ('synaptophysin', 'Gene', (49, 62)) ('S-100', 'Gene', (22, 27)) 38637 21074512 This review describes mutations in mtDNA and reduced mtDNA copy number, which contribute to OXPHOS defects in cancer cells. ('cancer', 'Disease', (110, 116)) ('reduced', 'NegReg', (45, 52)) ('mtDNA', 'Gene', (35, 40)) ('mtDNA', 'Gene', (53, 58)) ('contribute', 'Reg', (78, 88)) ('cancer', 'Phenotype', 'HP:0002664', (110, 116)) ('OXPHOS defects', 'MPA', (92, 106)) ('mutations', 'Var', (22, 31)) ('copy number', 'MPA', (59, 70)) ('cancer', 'Disease', 'MESH:D009369', (110, 116)) 38638 21074512 Maternally inherited mtDNA renders susceptibility to cancer, and mutation in the nuclear encoded genes causes defects in mtOXPHOS system. ('cancer', 'Disease', (53, 59)) ('cancer', 'Disease', 'MESH:D009369', (53, 59)) ('defects', 'MPA', (110, 117)) ('susceptibility', 'Reg', (35, 49)) ('cancer', 'Phenotype', 'HP:0002664', (53, 59)) ('mutation', 'Var', (65, 73)) ('mtOXPHOS system', 'MPA', (121, 136)) 38640 21074512 These epigenetic and genetic changes underlie the Warburg phenotype, which contributes to the development of cancer. ('contributes', 'Reg', (75, 86)) ('cancer', 'Disease', 'MESH:D009369', (109, 115)) ('cancer', 'Disease', (109, 115)) ('underlie', 'Reg', (37, 45)) ('cancer', 'Phenotype', 'HP:0002664', (109, 115)) ('Warburg phenotype', 'Disease', (50, 67)) ('epigenetic', 'Var', (6, 16)) 38643 21074512 Indeed, defect in OXPHOS is described as one of the most common and profound phenotypes of most cancers. ('defect', 'Var', (8, 14)) ('cancer', 'Phenotype', 'HP:0002664', (96, 102)) ('OXPHOS', 'MPA', (18, 24)) ('cancers', 'Disease', 'MESH:D009369', (96, 103)) ('cancers', 'Phenotype', 'HP:0002664', (96, 103)) ('cancers', 'Disease', (96, 103)) 38659 21074512 For example mtOXPHOS enzyme succinate dehydrogenase (SDHD, Complex II) is shown to be mutated in hereditary paragangliomas and phaeochromocytomas. ('succinate dehydrogenase', 'Gene', '6389', (28, 51)) ('mutated', 'Var', (86, 93)) ('SDHD', 'Gene', '6392', (53, 57)) ('SDHD', 'Gene', (53, 57)) ('paragangliomas', 'Phenotype', 'HP:0002668', (108, 122)) ('succinate dehydrogenase', 'Gene', (28, 51)) ('paraganglioma', 'Phenotype', 'HP:0002668', (108, 121)) ('hereditary paragangliomas and phaeochromocytomas', 'Disease', 'MESH:D010235', (97, 145)) 38661 21074512 Mutations in three of the four subunits of succinate dehydrogenase, namely, SDHB, SDHC, and SDHD, have been involved in tumorigenesis. ('SDHB', 'Gene', '6390', (76, 80)) ('SDHB', 'Gene', (76, 80)) ('succinate dehydrogenase', 'Gene', (43, 66)) ('SDHD', 'Gene', '6392', (92, 96)) ('SDHC', 'Gene', '6391', (82, 86)) ('SDHD', 'Gene', (92, 96)) ('tumor', 'Disease', 'MESH:D009369', (120, 125)) ('succinate dehydrogenase', 'Gene', '6389', (43, 66)) ('Mutations', 'Var', (0, 9)) ('involved', 'Reg', (108, 116)) ('tumor', 'Phenotype', 'HP:0002664', (120, 125)) ('tumor', 'Disease', (120, 125)) ('SDHC', 'Gene', (82, 86)) 38662 21074512 Recently, mutations in SDHD5 gene encoding proteins involved in assembly of SDHD complex contribute to hereditary paragangliomas have been described. ('SDHD', 'Gene', '6392', (76, 80)) ('SDHD', 'Gene', (76, 80)) ('SDHD', 'Gene', '6392', (23, 27)) ('SDHD', 'Gene', (23, 27)) ('hereditary paragangliomas', 'Disease', 'MESH:D010235', (103, 128)) ('hereditary paragangliomas', 'Disease', (103, 128)) ('paraganglioma', 'Phenotype', 'HP:0002668', (114, 127)) ('paragangliomas', 'Phenotype', 'HP:0002668', (114, 128)) ('mutations', 'Var', (10, 19)) 38663 21074512 Interestingly, hereditary mutation in SDHA leads to typical mitochondrial disease such as Leigh syndrome characterized by severe progressive neurodegenerative disorder causing epilepsy, psychomotor retardation, and tetraspasticity. ('psychomotor retardation', 'Disease', (186, 209)) ('Leigh syndrome', 'Disease', (90, 104)) ('progressive neurodegenerative disorder', 'Phenotype', 'HP:0002180', (129, 167)) ('SDHA', 'Gene', (38, 42)) ('mutation', 'Var', (26, 34)) ('epilepsy', 'Disease', 'MESH:D004827', (176, 184)) ('psychomotor retardation', 'Phenotype', 'HP:0025356', (186, 209)) ('mitochondrial disease', 'Disease', (60, 81)) ('psychomotor retardation', 'Disease', 'MESH:D011596', (186, 209)) ('SDHA', 'Gene', '6389', (38, 42)) ('neurodegenerative disorder', 'Disease', 'MESH:D019636', (141, 167)) ('epilepsy', 'Phenotype', 'HP:0001250', (176, 184)) ('mitochondrial disease', 'Disease', 'MESH:D028361', (60, 81)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (90, 104)) ('neurodegenerative disorder', 'Disease', (141, 167)) ('epilepsy', 'Disease', (176, 184)) ('leads to', 'Reg', (43, 51)) 38665 21074512 Mutation in SDHA gene causes paraganglioma and pheochromocytoma. ('paraganglioma', 'Disease', (29, 42)) ('SDHA', 'Gene', '6389', (12, 16)) ('Mutation', 'Var', (0, 8)) ('paraganglioma', 'Disease', 'MESH:D010235', (29, 42)) ('pheochromocytoma', 'Disease', (47, 63)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (47, 63)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (47, 63)) ('SDHA', 'Gene', (12, 16)) ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) ('causes', 'Reg', (22, 28)) 38668 21074512 Mutation in SDH genes led to tumorigenesis, and thus, should be considered as tumor suppressor genes. ('tumor', 'Disease', 'MESH:D009369', (29, 34)) ('tumor', 'Disease', 'MESH:D009369', (78, 83)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('Mutation', 'Var', (0, 8)) ('SDH', 'Gene', '6390', (12, 15)) ('led to', 'Reg', (22, 28)) ('tumor', 'Phenotype', 'HP:0002664', (78, 83)) ('tumor', 'Disease', (29, 34)) ('tumor', 'Disease', (78, 83)) ('SDH', 'Gene', (12, 15)) 38669 21074512 In addition, hereditary mutations in the Krebs's cycle enzyme fumarate hydratase (FH) leads to leiomyomas, uterine fibroids, and renal cell carcinoma. ('renal cell carcinoma', 'Disease', 'MESH:C538614', (129, 149)) ('uterine fibroids', 'Phenotype', 'HP:0000131', (107, 123)) ('leiomyomas', 'Disease', 'MESH:D007889', (95, 105)) ('renal cell carcinoma', 'Disease', (129, 149)) ('fumarate hydratase', 'Gene', '2271', (62, 80)) ('Krebs', 'Chemical', '-', (41, 46)) ('carcinoma', 'Phenotype', 'HP:0030731', (140, 149)) ('fumarate hydratase', 'Gene', (62, 80)) ('leads to', 'Reg', (86, 94)) ('uterine fibroids', 'Disease', (107, 123)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (129, 149)) ('leiomyomas', 'Disease', (95, 105)) ('mutations', 'Var', (24, 33)) ('FH', 'Gene', '2271', (82, 84)) 38670 21074512 Inhibition of FH activity stabilizes hypoxia-inducing factor, which induces angiogenesis in cancer, and thus, promotes tumorigenesis. ('tumor', 'Disease', (119, 124)) ('angiogenesis', 'CPA', (76, 88)) ('cancer', 'Disease', (92, 98)) ('FH', 'Gene', '2271', (14, 16)) ('cancer', 'Disease', 'MESH:D009369', (92, 98)) ('hypoxia', 'Disease', (37, 44)) ('hypoxia', 'Disease', 'MESH:D000860', (37, 44)) ('promotes', 'PosReg', (110, 118)) ('tumor', 'Disease', 'MESH:D009369', (119, 124)) ('Inhibition', 'Var', (0, 10)) ('cancer', 'Phenotype', 'HP:0002664', (92, 98)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('induces', 'PosReg', (68, 75)) 38671 21074512 Indeed both germline and somatic mutations in NDUFA13/GRIM-19, a subunit of Complex I involved in mtOXPHOS is linked to Hurthle cell tumors of the thyroid. ('tumors', 'Phenotype', 'HP:0002664', (133, 139)) ('Hurthle cell tumors of the thyroid', 'Disease', (120, 154)) ('Hurthle cell tumors of the thyroid', 'Disease', 'MESH:C536913', (120, 154)) ('GRIM-19', 'Gene', (54, 61)) ('linked to', 'Reg', (110, 119)) ('Hurthle cell tumors of the thyroid', 'Phenotype', 'HP:0006781', (120, 154)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('mutations', 'Var', (33, 42)) ('tumors of the thyroid', 'Phenotype', 'HP:0100031', (133, 154)) ('GRIM-19', 'Gene', '51079', (54, 61)) 38675 21074512 Somatic mutations affecting isocitrate dehydrogenase 1 and 2 (IDH1 and IDH2), which catalyse the conversion of isocitrate to the Krebs cycle-intermediate -ketoglutarate, have been identified in brain tumors. ('brain tumors', 'Disease', 'MESH:D001932', (194, 206)) ('Krebs', 'Chemical', '-', (129, 134)) ('brain tumors', 'Phenotype', 'HP:0030692', (194, 206)) ('ketoglutarate', 'Chemical', '-', (155, 168)) ('IDH1', 'Gene', '3417', (62, 66)) ('isocitrate', 'Chemical', 'MESH:C034219', (28, 38)) ('tumor', 'Phenotype', 'HP:0002664', (200, 205)) ('identified', 'Reg', (180, 190)) ('IDH2', 'Gene', (71, 75)) ('brain tumors', 'Disease', (194, 206)) ('isocitrate', 'Chemical', 'MESH:C034219', (111, 121)) ('mutations', 'Var', (8, 17)) ('tumors', 'Phenotype', 'HP:0002664', (200, 206)) ('IDH2', 'Gene', '3418', (71, 75)) ('IDH1', 'Gene', (62, 66)) 38676 21074512 Recent studies also indicate the presence of IDH1 and IDH2 mutations in other type of cancers such as prostate and B-acute lymphoblastic leukemias. ('IDH1', 'Gene', '3417', (45, 49)) ('leukemia', 'Phenotype', 'HP:0001909', (137, 145)) ('IDH2', 'Gene', (54, 58)) ('lymphoblastic leukemias', 'Phenotype', 'HP:0005526', (123, 146)) ('cancer', 'Phenotype', 'HP:0002664', (86, 92)) ('lymphoblastic leukemias', 'Disease', (123, 146)) ('prostate', 'Disease', (102, 110)) ('IDH2', 'Gene', '3418', (54, 58)) ('lymphoblastic leukemias', 'Disease', 'MESH:D054198', (123, 146)) ('leukemias', 'Phenotype', 'HP:0001909', (137, 146)) ('B-acute lymphoblastic leukemias', 'Phenotype', 'HP:0004812', (115, 146)) ('cancers', 'Phenotype', 'HP:0002664', (86, 93)) ('acute lymphoblastic leukemias', 'Phenotype', 'HP:0006721', (117, 146)) ('mutations', 'Var', (59, 68)) ('cancers', 'Disease', (86, 93)) ('IDH1', 'Gene', (45, 49)) ('cancers', 'Disease', 'MESH:D009369', (86, 93)) ('presence', 'Reg', (33, 41)) 38677 21074512 Mutation in IDH1 genes impairs its affinity for substrate and dominantly inhibits wild-type IDH1 activity through the formation of catalytically inactive heterodimers, which leads to the expression of hypoxia-inducing factor with subsequent promotion of tumorigenesis. ('impairs', 'NegReg', (23, 30)) ('hypoxia', 'Disease', (201, 208)) ('promotion', 'PosReg', (241, 250)) ('activity', 'MPA', (97, 105)) ('IDH1', 'Gene', '3417', (12, 16)) ('hypoxia', 'Disease', 'MESH:D000860', (201, 208)) ('catalytically', 'MPA', (131, 144)) ('leads to', 'Reg', (174, 182)) ('heterodimers', 'MPA', (154, 166)) ('tumor', 'Disease', (254, 259)) ('IDH1', 'Gene', (92, 96)) ('tumor', 'Disease', 'MESH:D009369', (254, 259)) ('formation', 'MPA', (118, 127)) ('affinity for substrate', 'MPA', (35, 57)) ('IDH1', 'Gene', (12, 16)) ('Mutation', 'Var', (0, 8)) ('inhibits', 'NegReg', (73, 81)) ('IDH1', 'Gene', '3417', (92, 96)) ('expression', 'MPA', (187, 197)) ('tumor', 'Phenotype', 'HP:0002664', (254, 259)) 38684 21074512 POLG gene was mutated in 63% of breast tumors. ('breast tumors', 'Phenotype', 'HP:0100013', (32, 45)) ('mutated', 'Var', (14, 21)) ('breast tumors', 'Disease', 'MESH:D001943', (32, 45)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('breast tumors', 'Disease', (32, 45)) ('POLG', 'Gene', (0, 4)) ('POLG', 'Gene', '5428', (0, 4)) ('tumors', 'Phenotype', 'HP:0002664', (39, 45)) 38685 21074512 Mutations were found in all three domains of the POLG protein, including T251I (the exonuclease domain), P587L (the linker region) and E1143G (the polymerase domain). ('P587L', 'Mutation', 'rs113994096', (105, 110)) ('T251I', 'Var', (73, 78)) ('POLG', 'Gene', '5428', (49, 53)) ('P587L', 'Var', (105, 110)) ('E1143G', 'Mutation', 'rs2307441', (135, 141)) ('E1143G', 'Var', (135, 141)) ('POLG', 'Gene', (49, 53)) ('T251I', 'Mutation', 'rs113994094', (73, 78)) 38686 21074512 We identified two novel mutations that include one silent (A703A) and one missense (R628Q) mutation in the evolutionarily conserved POLG linker region. ('POLG', 'Gene', '5428', (132, 136)) ('R628Q', 'Var', (84, 89)) ('R628Q', 'Mutation', 'rs201871736', (84, 89)) ('POLG', 'Gene', (132, 136)) ('A703A', 'Var', (59, 64)) 38687 21074512 Mutant POLG, when expressed in cancer cells, induced a depletion of mtDNA, decreased mitochondrial activity, decreased mitochondrial membrane potential, increased levels of reactive oxygen species and increased matrigel invasion. ('mitochondrial membrane potential', 'MPA', (119, 151)) ('decreased mitochondrial membrane potential', 'Phenotype', 'HP:0040013', (109, 151)) ('increased', 'PosReg', (201, 210)) ('mtDNA', 'MPA', (68, 73)) ('cancer', 'Disease', (31, 37)) ('levels of reactive oxygen species', 'MPA', (163, 196)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (173, 196)) ('cancer', 'Phenotype', 'HP:0002664', (31, 37)) ('matrigel invasion', 'CPA', (211, 228)) ('decreased mitochondrial activity', 'Phenotype', 'HP:0040013', (75, 107)) ('increased', 'PosReg', (153, 162)) ('mitochondrial activity', 'MPA', (85, 107)) ('Mutant', 'Var', (0, 6)) ('POLG', 'Gene', '5428', (7, 11)) ('decreased', 'NegReg', (109, 118)) ('depletion', 'MPA', (55, 64)) ('increased levels of reactive oxygen species', 'Phenotype', 'HP:0025464', (153, 196)) ('cancer', 'Disease', 'MESH:D009369', (31, 37)) ('POLG', 'Gene', (7, 11)) ('decreased', 'NegReg', (75, 84)) 38689 21074512 Mitochondrial DNA mutations have been increasingly identified in various types of cancer. ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('identified', 'Reg', (51, 61)) ('Mitochondrial DNA', 'Gene', (0, 17)) ('cancer', 'Disease', (82, 88)) ('cancer', 'Disease', 'MESH:D009369', (82, 88)) ('mutations', 'Var', (18, 27)) 38690 21074512 A number of mtDNA rearrangements and amplifications have been reported in acute myeloid leukemia. ('acute myeloid leukemia', 'Disease', (74, 96)) ('reported', 'Reg', (62, 70)) ('mtDNA', 'Gene', (12, 17)) ('rearrangements', 'Var', (18, 32)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (74, 96)) ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (74, 96)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (80, 96)) ('leukemia', 'Phenotype', 'HP:0001909', (88, 96)) ('amplifications', 'Var', (37, 51)) 38691 21074512 Point mutations in mtDNA mutation have been reported in human colorectal cancer cells, esophageal, ovarian, thyroid, head, neck, lung, bladder, renal, and breast cancer cells. ('colorectal cancer', 'Phenotype', 'HP:0003003', (62, 79)) ('bladder', 'Disease', (135, 142)) ('cancer', 'Phenotype', 'HP:0002664', (162, 168)) ('esophageal', 'Disease', (87, 97)) ('ovarian', 'Disease', (99, 106)) ('ovarian', 'Disease', 'MESH:D010051', (99, 106)) ('renal', 'Disease', (144, 149)) ('cancer', 'Phenotype', 'HP:0002664', (73, 79)) ('human', 'Species', '9606', (56, 61)) ('breast cancer', 'Phenotype', 'HP:0003002', (155, 168)) ('Point mutations', 'Var', (0, 15)) ('colorectal cancer', 'Disease', 'MESH:D015179', (62, 79)) ('mtDNA', 'Gene', (19, 24)) ('thyroid', 'Disease', (108, 115)) ('breast cancer', 'Disease', 'MESH:D001943', (155, 168)) ('colorectal cancer', 'Disease', (62, 79)) ('breast cancer', 'Disease', (155, 168)) ('reported', 'Reg', (44, 52)) ('lung', 'Disease', (129, 133)) ('head', 'Disease', (117, 121)) 38692 21074512 These reports led to a suggestion that mutations in mtDNA D-loop can function as an independent prognostic marker for breast cancer. ('mtDNA D-loop', 'Gene', (52, 64)) ('cancer', 'Phenotype', 'HP:0002664', (125, 131)) ('mutations', 'Var', (39, 48)) ('breast cancer', 'Disease', 'MESH:D001943', (118, 131)) ('breast cancer', 'Disease', (118, 131)) ('breast cancer', 'Phenotype', 'HP:0003002', (118, 131)) 38693 21074512 For example lack of protective histones, limited DNA repair capability, lack of introns, and continuous exposure to ROS are associated with increased rate of mutations in mtDNA. ('ROS', 'Chemical', 'MESH:D017382', (116, 119)) ('introns', 'Protein', (80, 87)) ('limited', 'NegReg', (41, 48)) ('protective histones', 'Protein', (20, 39)) ('mtDNA', 'Gene', (171, 176)) ('DNA repair', 'MPA', (49, 59)) ('lack', 'NegReg', (12, 16)) ('mutations', 'Var', (158, 167)) 38696 21074512 Mutation in the D-loop region is an important feature and has been reported in variety of tumors examined to date. ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('Mutation', 'Var', (0, 8)) ('tumors', 'Phenotype', 'HP:0002664', (90, 96)) ('tumors', 'Disease', (90, 96)) ('tumors', 'Disease', 'MESH:D009369', (90, 96)) ('reported', 'Reg', (67, 75)) 38704 21074512 Notably, mtDNA copy number was inversely proportional to several important endogenous antioxidant entities such as total glutathione, Cu-Zn SOD, and catalase. ('copy', 'Var', (15, 19)) ('mtDNA', 'Gene', (9, 14)) ('glutathione', 'Chemical', 'MESH:D005978', (121, 132)) ('catalase', 'Gene', (149, 157)) ('catalase', 'Gene', '847', (149, 157)) ('total glutathione', 'MPA', (115, 132)) 38709 21074512 Subjects with the haplogroup M7b2 showed an increased risk for hematopoietic cancer. ('M7b2', 'Var', (29, 33)) ('hematopoietic cancer', 'Disease', 'MESH:D019337', (63, 83)) ('hematopoietic cancer', 'Disease', (63, 83)) ('cancer', 'Phenotype', 'HP:0002664', (77, 83)) 38710 21074512 Results also indicated that haplogroup M7b2 is a risk factor for leukemia. ('risk factor', 'Reg', (49, 60)) ('leukemia', 'Phenotype', 'HP:0001909', (65, 73)) ('leukemia', 'Disease', 'MESH:D007938', (65, 73)) ('leukemia', 'Disease', (65, 73)) ('haplogroup M7b2', 'Var', (28, 43)) 38713 21074512 Bai and colleagues analyzed mtDNA polymorphism in European-American females and reported that A10398G and T16519C increase breast cancer risk. ('increase breast cancer', 'Disease', (114, 136)) ('increase breast cancer', 'Disease', 'MESH:D001943', (114, 136)) ('T16519C', 'Mutation', 'g.16519T>C', (106, 113)) ('T16519C', 'Var', (106, 113)) ('A10398G', 'Mutation', 'g.10398A>G', (94, 101)) ('breast cancer', 'Phenotype', 'HP:0003002', (123, 136)) ('cancer', 'Phenotype', 'HP:0002664', (130, 136)) ('A10398G', 'Var', (94, 101)) 38714 21074512 In contrast, T3197C and G13708A were found to decrease breast cancer risk. ('breast cancer', 'Phenotype', 'HP:0003002', (55, 68)) ('T3197C', 'Var', (13, 19)) ('cancer', 'Phenotype', 'HP:0002664', (62, 68)) ('G13708A', 'Var', (24, 31)) ('G13708A', 'Mutation', 'g.13708G>A', (24, 31)) ('breast cancer', 'Disease', 'MESH:D001943', (55, 68)) ('breast cancer', 'Disease', (55, 68)) ('T3197C', 'SUBSTITUTION', 'None', (13, 19)) ('decrease', 'NegReg', (46, 54)) 38715 21074512 Wang's group evaluated polymorphisms in mtDNA associated with increased risk of pancreatic cancer. ('polymorphisms', 'Var', (23, 36)) ('increased risk of pancreatic cancer', 'Phenotype', 'HP:0002894', (62, 97)) ('pancreatic cancer', 'Disease', (80, 97)) ('pancreatic cancer', 'Disease', 'MESH:D010190', (80, 97)) ('mtDNA', 'Gene', (40, 45)) ('cancer', 'Phenotype', 'HP:0002664', (91, 97)) ('associated', 'Reg', (46, 56)) ('pancreatic cancer', 'Phenotype', 'HP:0002894', (80, 97)) 38717 21074512 The 10398A allele localized in NADH dehydrogenase-3 locus (ND3) of mtDNA is associated with increased risk for invasive breast cancer in African-American women. ('ND3', 'Gene', (59, 62)) ('invasive breast cancer', 'Disease', 'MESH:D001943', (111, 133)) ('cancer', 'Phenotype', 'HP:0002664', (127, 133)) ('breast cancer', 'Phenotype', 'HP:0003002', (120, 133)) ('invasive breast cancer', 'Disease', (111, 133)) ('NADH', 'Chemical', 'MESH:D009243', (31, 35)) ('associated', 'Reg', (76, 86)) ('women', 'Species', '9606', (154, 159)) ('mtDNA', 'Gene', (67, 72)) ('10398A', 'Var', (4, 10)) 38718 21074512 Similarly, 10398A mutation is also associated with breast and esophageal cancer in Indian women, whereas 10398G had been shown to increase the risk of breast cancer in European-American women. ('women', 'Species', '9606', (186, 191)) ('associated', 'Reg', (35, 45)) ('breast and esophageal cancer', 'Disease', 'MESH:D004938', (51, 79)) ('breast cancer', 'Disease', 'MESH:D001943', (151, 164)) ('cancer', 'Phenotype', 'HP:0002664', (73, 79)) ('10398A mutation', 'Var', (11, 26)) ('breast cancer', 'Phenotype', 'HP:0003002', (151, 164)) ('breast cancer', 'Disease', (151, 164)) ('10398G', 'Var', (105, 111)) ('cancer', 'Phenotype', 'HP:0002664', (158, 164)) ('women', 'Species', '9606', (90, 95)) 38719 21074512 G10398A along with other germline mutation such as G9055GA, T16519C, G13708A, T3197C, and A10398G also result in increased susceptibility to breast cancer in women. ('T16519C', 'Mutation', 'g.16519T>C', (60, 67)) ('breast cancer', 'Phenotype', 'HP:0003002', (141, 154)) ('susceptibility', 'Reg', (123, 137)) ('G10398A', 'Mutation', 'g.10398G>A', (0, 7)) ('G13708A', 'Var', (69, 76)) ('cancer', 'Phenotype', 'HP:0002664', (148, 154)) ('T3197C', 'SUBSTITUTION', 'None', (78, 84)) ('breast cancer', 'Disease', 'MESH:D001943', (141, 154)) ('A10398G', 'Mutation', 'g.10398A>G', (90, 97)) ('G13708A', 'Mutation', 'g.13708G>A', (69, 76)) ('women', 'Species', '9606', (158, 163)) ('breast cancer', 'Disease', (141, 154)) ('G10398A', 'Var', (0, 7)) ('G9055GA', 'Var', (51, 58)) ('G9055GA', 'Mutation', 'c.9055G>GA', (51, 58)) ('A10398G', 'Var', (90, 97)) ('T16519C', 'Var', (60, 67)) ('T3197C', 'Var', (78, 84)) 38720 21074512 Using cybrid approach, Singh's group analyzed tumorigenic potential of 10398A found in African-American woman and found that 10398A induces complex I activity resulting in increased ROS production. ('woman', 'Species', '9606', (104, 109)) ('ROS', 'Chemical', 'MESH:D017382', (182, 185)) ('increased', 'PosReg', (172, 181)) ('increased ROS production', 'Phenotype', 'HP:0025464', (172, 196)) ('tumor', 'Phenotype', 'HP:0002664', (46, 51)) ('ROS production', 'MPA', (182, 196)) ('tumor', 'Disease', (46, 51)) ('induces', 'Reg', (132, 139)) ('10398A', 'Var', (125, 131)) ('complex I activity', 'MPA', (140, 158)) ('tumor', 'Disease', 'MESH:D009369', (46, 51)) 38721 21074512 The 10398A also conferred resistance to apoptosis mediated by Akt activation. ('apoptosis', 'CPA', (40, 49)) ('Akt', 'Gene', '207', (62, 65)) ('10398A', 'Var', (4, 10)) ('Akt', 'Gene', (62, 65)) ('activation', 'PosReg', (66, 76)) 38722 21074512 Additionally, Kulawiec and colleagues demonstrated that the G10398A leads to an increased tumorigenesis and metastases in mice. ('metastases', 'Disease', (108, 118)) ('mice', 'Species', '10090', (122, 126)) ('G10398A', 'Var', (60, 67)) ('increased', 'PosReg', (80, 89)) ('tumor', 'Disease', (90, 95)) ('metastases', 'Disease', 'MESH:D009362', (108, 118)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('G10398A', 'Mutation', 'g.10398G>A', (60, 67)) ('tumor', 'Disease', 'MESH:D009369', (90, 95)) 38723 21074512 Studies suggest that retrograde cross talk involves epigenetic and genetic changes, which play a key role in tumorigenesis. ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('epigenetic', 'Var', (52, 62)) ('tumor', 'Disease', (109, 114)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) 38724 21074512 Epigenetic modification in the nuclear genome plays a key role in human tumorigenesis. ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('tumor', 'Disease', (72, 77)) ('human', 'Species', '9606', (66, 71)) ('tumor', 'Disease', 'MESH:D009369', (72, 77)) ('Epigenetic modification', 'Var', (0, 23)) 38725 21074512 al., performed Restriction Landmark Genome Scanning (RLGS) with the methylation-sensitive enzyme NotI, which recognizes the sequence GCGGCCGC, and showed that 64 sites were hypomethylated and 50 sites were hypermethylated when mtDNA was depleted from four different cell lines. ('hypomethylated', 'Var', (173, 187)) ('RLGS', 'Disease', 'None', (53, 57)) ('RLGS', 'Disease', (53, 57)) 38727 21074512 These data suggest that OXPHOS impairment plays an important role in the aberrant methylation of CpG islands found in nearly all cancers. ('cancer', 'Phenotype', 'HP:0002664', (129, 135)) ('cancers', 'Disease', 'MESH:D009369', (129, 136)) ('cancers', 'Phenotype', 'HP:0002664', (129, 136)) ('cancers', 'Disease', (129, 136)) ('aberrant', 'Var', (73, 81)) ('CpG islands', 'Protein', (97, 108)) ('methylation', 'MPA', (82, 93)) 38728 21074512 Since OXPHOS defect leads to changes in redox status, membrane potential and the level of ATP, it is plausible that either a single intracellular change or a combination of these changes signal epigenetic changes. ('membrane potential', 'MPA', (54, 72)) ('changes', 'Reg', (29, 36)) ('redox status', 'MPA', (40, 52)) ('OXPHOS', 'Var', (6, 12)) ('ATP', 'Chemical', 'MESH:D000255', (90, 93)) ('level of ATP', 'MPA', (81, 93)) 38731 21074512 Accumulated nuclear genome instability can help cells acquire new functions such as resistance to apoptosis, migration, and invasive characteristics, which in turn, can induce tumorigenesis (Figure 1). ('tumor', 'Phenotype', 'HP:0002664', (176, 181)) ('tumor', 'Disease', (176, 181)) ('migration', 'CPA', (109, 118)) ('resistance', 'CPA', (84, 94)) ('induce', 'PosReg', (169, 175)) ('nuclear genome instability', 'Var', (12, 38)) ('tumor', 'Disease', 'MESH:D009369', (176, 181)) ('invasive characteristics', 'CPA', (124, 148)) 38736 21074512 When mitochondria are 1) injured severely or 2) damage is persistent (for example, mutation in mtDNA), mitocheckpoint can trigger cellular senescence. ('cellular senescence', 'CPA', (130, 149)) ('are 1', 'Gene', '6293', (18, 23)) ('trigger', 'Reg', (122, 129)) ('mutation', 'Var', (83, 91)) ('mtDNA', 'Gene', (95, 100)) ('are 1', 'Gene', (18, 23)) 38737 21074512 Accumulation of mutations in mitochondrial and/or nuclear genome of cells containing severely damaged mitochondria may bypass cellular senescence leading to resistance against apoptosis and development of tumors. ('tumors', 'Disease', 'MESH:D009369', (205, 211)) ('cellular senescence', 'CPA', (126, 145)) ('mutations', 'Var', (16, 25)) ('resistance against apoptosis', 'CPA', (157, 185)) ('tumors', 'Phenotype', 'HP:0002664', (205, 211)) ('tumor', 'Phenotype', 'HP:0002664', (205, 210)) ('tumors', 'Disease', (205, 211)) 38753 25879199 This suggests that blockade of HSD10 may halt and/or prevent cancer growth, thus providing a promising novel target for cancer patients as a screening or therapeutic option. ('cancer', 'Phenotype', 'HP:0002664', (120, 126)) ('blockade', 'Var', (19, 27)) ('HSD10', 'Gene', (31, 36)) ('halt', 'NegReg', (41, 45)) ('cancer', 'Disease', 'MESH:D009369', (61, 67)) ('cancer', 'Disease', (61, 67)) ('cancer', 'Disease', (120, 126)) ('cancer', 'Disease', 'MESH:D009369', (120, 126)) ('patients', 'Species', '9606', (127, 135)) ('cancer', 'Phenotype', 'HP:0002664', (61, 67)) ('prevent', 'NegReg', (53, 60)) 38759 25879199 It is well known that constant reactive oxygen species (ROS) exposure induces mutations in mitochondrial DNA, which lead to cancer initiation and metastasis. ('cancer initiation', 'Disease', (124, 141)) ('metastasis', 'CPA', (146, 156)) ('induces', 'Reg', (70, 77)) ('lead to', 'Reg', (116, 123)) ('mutations', 'Var', (78, 87)) ('cancer', 'Phenotype', 'HP:0002664', (124, 130)) ('cancer initiation', 'Disease', 'MESH:D009369', (124, 141)) ('ROS', 'Chemical', 'MESH:D017382', (56, 59)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (31, 54)) ('mitochondrial DNA', 'Gene', (91, 108)) 38763 25879199 Modification of the mitochondrial permeability transition pore (MPTP) in malignant cells has been shown to render cells more resistant to anticancer therapies, however, the mechanism underlying this resistance is not fully understood. ('cancer', 'Disease', 'MESH:D009369', (142, 148)) ('resistant', 'CPA', (125, 134)) ('Modification', 'Var', (0, 12)) ('cancer', 'Phenotype', 'HP:0002664', (142, 148)) ('more', 'PosReg', (120, 124)) ('mitochondrial permeability transition pore', 'MPA', (20, 62)) ('cancer', 'Disease', (142, 148)) 38769 25879199 Furthermore, HSD10 may promote tumorigenesis and aggressiveness, as elevated HSD10 levels were observed in prostate-to-bone metastases compared to non-malignant prostate and primary prostate tumor tissue. ('metastases', 'Disease', (124, 134)) ('HSD10', 'Var', (13, 18)) ('elevated', 'PosReg', (68, 76)) ('tumor', 'Phenotype', 'HP:0002664', (191, 196)) ('tumor', 'Phenotype', 'HP:0002664', (31, 36)) ('aggressiveness', 'Disease', (49, 63)) ('prostate tumor', 'Disease', (182, 196)) ('aggressiveness', 'Phenotype', 'HP:0000718', (49, 63)) ('promote', 'PosReg', (23, 30)) ('prostate tumor', 'Disease', 'MESH:D011471', (182, 196)) ('aggressiveness', 'Disease', 'MESH:D001523', (49, 63)) ('tumor', 'Disease', (191, 196)) ('prostate tumor', 'Phenotype', 'HP:0100787', (182, 196)) ('levels', 'MPA', (83, 89)) ('tumor', 'Disease', 'MESH:D009369', (191, 196)) ('metastases', 'Disease', 'MESH:D009362', (124, 134)) ('tumor', 'Disease', (31, 36)) ('HSD10', 'Gene', (77, 82)) ('tumor', 'Disease', 'MESH:D009369', (31, 36)) 38770 25879199 While HSD10 remains underexplored in all cancer types, the current data in bone and prostate cancers strongly suggest that HSD10 may be utilized in cancer cells for protection against cell death and enhancement of unrestricted growth. ('cancer', 'Disease', (148, 154)) ('enhancement', 'PosReg', (199, 210)) ('cancer', 'Disease', (93, 99)) ('cancer', 'Disease', 'MESH:D009369', (148, 154)) ('cancer', 'Disease', 'MESH:D009369', (93, 99)) ('bone and prostate cancers', 'Disease', 'MESH:D001859', (75, 100)) ('prostate cancers', 'Phenotype', 'HP:0012125', (84, 100)) ('cancer', 'Phenotype', 'HP:0002664', (41, 47)) ('cancer', 'Phenotype', 'HP:0002664', (148, 154)) ('cancer', 'Phenotype', 'HP:0002664', (93, 99)) ('HSD10', 'Var', (123, 128)) ('cancer', 'Disease', (41, 47)) ('cancer', 'Disease', 'MESH:D009369', (41, 47)) ('unrestricted growth', 'CPA', (214, 233)) ('cancers', 'Phenotype', 'HP:0002664', (93, 100)) 38771 25879199 Based on these observations, we postulate that HSD10 overexpression enhances cancer cell growth and resistance to cell death. ('resistance to cell death', 'CPA', (100, 124)) ('cancer', 'Disease', (77, 83)) ('cancer', 'Disease', 'MESH:D009369', (77, 83)) ('enhances', 'PosReg', (68, 76)) ('HSD10', 'Gene', (47, 52)) ('overexpression', 'Var', (53, 67)) ('cancer', 'Phenotype', 'HP:0002664', (77, 83)) 38840 25879199 HSD10 protein expression was increased by 3-fold in HSD10 ov cells compared to EV cells (Figure 1A). ('EV', 'Chemical', '-', (79, 81)) ('protein', 'Protein', (6, 13)) ('increased', 'PosReg', (29, 38)) ('HSD10 ov cells', 'Var', (52, 66)) ('HSD10', 'Gene', (0, 5)) 38841 25879199 The intensity of HSD10 staining was significantly enhanced in HSD10 ov cells in comparison with EV cells (Figure 1C). ('enhanced', 'PosReg', (50, 58)) ('intensity', 'MPA', (4, 13)) ('EV', 'Chemical', '-', (96, 98)) ('HSD10', 'Var', (62, 67)) 38843 25879199 To thoroughly examine the effect of HSD10 in cancer, we used lentiviral transfection to knockdown HSD10 in PC-12 cells. ('PC-12 cells', 'CellLine', 'CVCL:0481', (107, 118)) ('cancer', 'Phenotype', 'HP:0002664', (45, 51)) ('knockdown', 'Var', (88, 97)) ('HSD10', 'Gene', (98, 103)) ('cancer', 'Disease', 'MESH:D009369', (45, 51)) ('cancer', 'Disease', (45, 51)) 38848 25879199 This reduction in all of the complexes indicates that HSD10 is important for cancer cell functionality, and would likely have a substantial impact on subsequent mitochondrial processes. ('HSD10', 'Var', (54, 59)) ('reduction', 'NegReg', (5, 14)) ('cancer', 'Disease', (77, 83)) ('cancer', 'Disease', 'MESH:D009369', (77, 83)) ('impact', 'Reg', (140, 146)) ('cancer', 'Phenotype', 'HP:0002664', (77, 83)) ('mitochondrial processes', 'MPA', (161, 184)) 38852 25879199 In conjunction with the complex IV data observed in Figure 2D, the level of ATP was significantly elevated in HSD10 ov cells compared to EV cells (Figure 2F), demonstrating a possible increase in energy generation in HSD10-overexpressing PC-12 cells. ('HSD10 ov', 'Var', (110, 118)) ('PC-12 cells', 'CellLine', 'CVCL:0481', (238, 249)) ('rat', 'Species', '10116', (207, 210)) ('rat', 'Species', '10116', (166, 169)) ('increase', 'PosReg', (184, 192)) ('elevated', 'PosReg', (98, 106)) ('energy generation', 'MPA', (196, 213)) ('EV', 'Chemical', '-', (137, 139)) ('ATP', 'Chemical', 'MESH:D000255', (76, 79)) ('level of ATP', 'MPA', (67, 79)) 38853 25879199 On the other hand, citrate synthase enzyme activity, which serves as a measurement of mitochondrial fitness, was reduced in HSD10 shRNA cells (Figure 2E). ('mitochondrial fitness', 'Disease', 'MESH:D028361', (86, 107)) ('citrate synthase', 'Gene', (19, 35)) ('mitochondrial fitness', 'Disease', (86, 107)) ('HSD10', 'Var', (124, 129)) ('reduced', 'NegReg', (113, 120)) ('citrate synthase', 'Gene', '170587', (19, 35)) 38854 25879199 Similarly, ATP production was diminished in HSD10 shRNA cells compared to control shRNA cells (Figure 2F), which was expected in view of the decreased activity observed in all of the ETC. ('ATP', 'Chemical', 'MESH:D000255', (11, 14)) ('ATP production', 'MPA', (11, 25)) ('HSD10 shRNA', 'Var', (44, 55)) ('diminished', 'NegReg', (30, 40)) 38864 25879199 Taken together, these results suggest that HSD10 promotes pheochromocytoma cell growth in cell culture and that knockdown of HSD10 has a reverse effect on cancer cell growth. ('HSD10', 'Gene', (125, 130)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (58, 74)) ('cancer', 'Phenotype', 'HP:0002664', (155, 161)) ('promotes', 'PosReg', (49, 57)) ('knockdown', 'Var', (112, 121)) ('HSD10', 'Gene', (43, 48)) ('pheochromocytoma', 'Disease', (58, 74)) ('cancer', 'Disease', (155, 161)) ('cancer', 'Disease', 'MESH:D009369', (155, 161)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (58, 74)) 38866 25879199 SCID mice inoculated with HSD10 ov cells exhibited drastically larger tumors compared to mice with EV tumor xenografts which displayed very minimal growth (Figure 4C-D). ('larger', 'PosReg', (63, 69)) ('EV tumor', 'Disease', 'MESH:D004819', (99, 107)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('mice', 'Species', '10090', (89, 93)) ('HSD10', 'Var', (26, 31)) ('SCID', 'Disease', 'MESH:D053632', (0, 4)) ('tumors', 'Disease', (70, 76)) ('tumors', 'Disease', 'MESH:D009369', (70, 76)) ('SCID', 'Disease', (0, 4)) ('EV tumor', 'Disease', (99, 107)) ('tumors', 'Phenotype', 'HP:0002664', (70, 76)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('mice', 'Species', '10090', (5, 9)) 38869 25879199 While cell viability steadily decreased for both cell groups as the chemical dosage increased, HSD10 ov cells demonstrated significantly higher reduction of MTT at 0.75 and 1 mM concentrations of H2O2 compared to EV cells (Figure 5A). ('rat', 'Species', '10116', (117, 120)) ('MTT', 'Chemical', 'MESH:C070243', (157, 160)) ('EV', 'Chemical', '-', (213, 215)) ('H2O2', 'Chemical', 'MESH:D006861', (196, 200)) ('H2O2', 'Var', (196, 200)) ('reduction', 'NegReg', (144, 153)) ('MTT', 'MPA', (157, 160)) ('rat', 'Species', '10116', (185, 188)) 38875 25879199 As speculated, complex IV enzyme activity was significantly increased in HSD10 ov cells compared to EV cells after just one hour of H2O2 treatment (Figure 5D). ('H2O2', 'Chemical', 'MESH:D006861', (132, 136)) ('activity', 'MPA', (33, 41)) ('increased', 'PosReg', (60, 69)) ('EV', 'Chemical', '-', (100, 102)) ('HSD10 ov', 'Var', (73, 81)) 38879 25879199 As expected, both EV and HSD10 ov cells treated with H2O2 exhibited higher percentages of cells undergoing apoptosis (Figure 5F), compared with the untreated matched control groups. ('H2O2', 'Var', (53, 57)) ('EV', 'Chemical', '-', (18, 20)) ('H2O2', 'Chemical', 'MESH:D006861', (53, 57)) ('cells', 'CPA', (90, 95)) 38881 25879199 The data presented here support the concept that HSD10 overexpression increases pheochromocytoma cell resistance to cell death induced by oxidative stress. ('increases pheochromocytoma', 'Disease', 'MESH:D010673', (70, 96)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('overexpression', 'Var', (55, 69)) ('oxidative stress', 'Phenotype', 'HP:0025464', (138, 154)) ('increases pheochromocytoma', 'Disease', (70, 96)) ('HSD10', 'Gene', (49, 54)) 38887 25879199 Interestingly, CypD protein expression was significantly reduced in HSD10 shRNA cells compared with control shRNA cells (Figure 6B). ('reduced', 'NegReg', (57, 64)) ('HSD10 shRNA', 'Var', (68, 79)) ('CypD', 'Gene', '282819', (15, 19)) ('CypD', 'Gene', (15, 19)) 38889 25879199 We suggest that, due to the reductions in both HSD10 and CypD, cancer cells become more susceptible to cell death induction. ('HSD10', 'Var', (47, 52)) ('cancer', 'Phenotype', 'HP:0002664', (63, 69)) ('CypD', 'Gene', '282819', (57, 61)) ('CypD', 'Gene', (57, 61)) ('cancer', 'Disease', 'MESH:D009369', (63, 69)) ('reductions', 'NegReg', (28, 38)) ('cancer', 'Disease', (63, 69)) 38891 25879199 As shown in Figure 6C, there is an enhanced interaction between HSD10 and CypD in HSD10 ov cells compared to EV cells, which was confirmed using both proteins as pull-down antibodies. ('HSD10', 'Var', (82, 87)) ('CypD', 'Gene', '282819', (74, 78)) ('enhanced', 'PosReg', (35, 43)) ('CypD', 'Gene', (74, 78)) ('EV', 'Chemical', '-', (109, 111)) ('interaction', 'Interaction', (44, 55)) 38895 25879199 As expected, HSD10 levels where increased in HSD10 ov cells compared to EV cells (Figure 6G), consistent with the results in Figure 1A-C. Co-staining of HSD10 and CypD with the mitochondrial markers SODII and Hsp60, respectively, confirms mitochondrial localization of the proteins (Figure 6E-F). ('mitochondrial localization', 'MPA', (239, 265)) ('Hsp60', 'Gene', '63868', (209, 214)) ('CypD', 'Gene', '282819', (163, 167)) ('CypD', 'Gene', (163, 167)) ('HSD10', 'Var', (45, 50)) ('increased', 'PosReg', (32, 41)) ('Hsp60', 'Gene', (209, 214)) ('EV', 'Chemical', '-', (72, 74)) ('HSD10 levels', 'MPA', (13, 25)) 38910 25879199 Suppression of MPTP-induced cell death observed in tumor cells is thought to occur due to CypD molecular interactions which prevent IMM translocation, as inhibition of CypD protects malignant cells from necrosis. ('CypD', 'Gene', (168, 172)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('CypD', 'Gene', '282819', (90, 94)) ('CypD', 'Gene', (90, 94)) ('inhibition', 'Var', (154, 164)) ('tumor', 'Disease', (51, 56)) ('CypD', 'Gene', '282819', (168, 172)) ('necrosis', 'Disease', 'MESH:D009336', (203, 211)) ('cell', 'CPA', (28, 32)) ('IMM translocation', 'MPA', (132, 149)) ('tumor', 'Disease', 'MESH:D009369', (51, 56)) ('necrosis', 'Disease', (203, 211)) 38927 25879199 Most often, cancer cells have disrupted cell death pathways due to mutations that either inhibit pro-apoptotic proteins or elevate anti-apoptotic proteins. ('cancer', 'Disease', 'MESH:D009369', (12, 18)) ('elevate', 'PosReg', (123, 130)) ('cancer', 'Disease', (12, 18)) ('cell death', 'CPA', (40, 50)) ('pro-apoptotic', 'MPA', (97, 110)) ('mutations', 'Var', (67, 76)) ('disrupted', 'NegReg', (30, 39)) ('inhibit', 'NegReg', (89, 96)) ('cancer', 'Phenotype', 'HP:0002664', (12, 18)) ('anti-apoptotic proteins', 'MPA', (131, 154)) 38937 25879199 As HSD10 overexpression grants pheochromocytoma cells enhanced cellular proliferative and cell death resistant capabilities, targeted inhibition of HSD10 in cancer cells may provide a novel treatment method. ('cancer', 'Phenotype', 'HP:0002664', (157, 163)) ('overexpression', 'PosReg', (9, 23)) ('HSD10', 'Gene', (148, 153)) ('inhibition', 'Var', (134, 144)) ('rat', 'Species', '10116', (79, 82)) ('cancer', 'Disease', 'MESH:D009369', (157, 163)) ('cancer', 'Disease', (157, 163)) ('cell death resistant capabilities', 'CPA', (90, 123)) ('pheochromocytoma', 'Disease', (31, 47)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (31, 47)) ('cellular proliferative', 'CPA', (63, 85)) ('enhanced', 'PosReg', (54, 62)) ('HSD10', 'Gene', (3, 8)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (31, 47)) 38942 25879199 In summary, we have provided substantial evidence demonstrating that HSD10 overexpression significantly increased pheochromocytoma cell growth in cell culture and in vivo. ('HSD10', 'Gene', (69, 74)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (114, 130)) ('increased', 'PosReg', (104, 113)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (114, 130)) ('rat', 'Species', '10116', (57, 60)) ('overexpression', 'Var', (75, 89)) ('pheochromocytoma', 'Disease', (114, 130)) 38950 23532898 Single-nucleotide polymorphism (SNP) array analysis of pheochromocytoma tissue demonstrated mosaic deletions of 8p12pter, 21q21.1qter, 22q11.23qter; commonly seen in pheochromocytomas. ('pheochromocytoma', 'Disease', (166, 182)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (55, 71)) ('deletions', 'Var', (99, 108)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (166, 183)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (166, 182)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (166, 182)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (166, 183)) ('pheochromocytomas', 'Disease', (166, 183)) ('8p12pter', 'Gene', (112, 120)) ('21q21.1qter', 'Var', (122, 133)) ('pheochromocytoma', 'Disease', (55, 71)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (55, 71)) 38953 23532898 Subsequent SNP array analysis of skin fibroblasts from the hyperplastic side demonstrated 5% mosaic paternal UPD for 11p15. ('p15', 'Gene', (119, 122)) ('p15', 'Gene', '1030', (119, 122)) ('mosaic paternal UPD', 'Var', (93, 112)) 38954 23532898 We have subsequently used SNP array analysis to identify four patients with subtle hemihyperplasia with low-level mosaic UPD that was not detected by methylation analysis. ('patients', 'Species', '9606', (62, 70)) ('subtle hemihyperplasia', 'Disease', (76, 98)) ('subtle hemihyperplasia', 'Disease', 'MESH:C565524', (76, 98)) ('low-level mosaic UPD', 'Var', (104, 124)) 38964 23532898 The three most common epigenotypes found in BWS are loss of methylation of KvDMR, uniparental isodisomy (UPD) 11p15, and hypermethylation of H19DMR. ('loss', 'NegReg', (52, 56)) ('p15', 'Gene', (112, 115)) ('p15', 'Gene', '1030', (112, 115)) ('H19', 'Gene', '283120', (141, 144)) ('hypermethylation', 'Var', (121, 137)) ('H19', 'Gene', (141, 144)) ('KvDMR', 'Gene', (75, 80)) ('uniparental isodisomy', 'Disease', (82, 103)) ('methylation', 'MPA', (60, 71)) ('uniparental isodisomy', 'Disease', 'MESH:D024182', (82, 103)) 38973 23532898 However, between 40% and 59% of pheochromocytomas in children <18 years of age are due to known genetic mutations, with the percentage of hereditary disease as high as 70% in children <10 years of age. ('mutations', 'Var', (104, 113)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (32, 49)) ('hereditary disease', 'Disease', (138, 156)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (32, 48)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (32, 49)) ('hereditary disease', 'Disease', 'MESH:D030342', (138, 156)) ('children', 'Species', '9606', (53, 61)) ('children', 'Species', '9606', (175, 183)) ('due', 'Reg', (83, 86)) ('pheochromocytomas', 'Disease', (32, 49)) 38982 23532898 We have found that strict adherence to reagent lots in generating reference data sets and development of in-house analytics has led to an improved detection of both mosaic copy number abnormalities as well as mosaic homozygosity (Conlin, unpublished data). ('copy number abnormalities', 'Disease', 'MESH:D007674', (172, 197)) ('improved', 'PosReg', (138, 146)) ('mosaic homozygosity', 'Var', (209, 228)) ('copy number abnormalities', 'Disease', (172, 197)) 38986 23532898 Slides labeled with antibodies to p57Kip2 were scanned using the Aperio ScanScope CS slide scanner (Aperio Technologies, Vista, CA). ('p57Kip2', 'Gene', '1028', (34, 41)) ('antibodies', 'Var', (20, 30)) ('p57Kip2', 'Gene', (34, 41)) 39008 23532898 Given the high prevalence of germline mutations in early onset pheochromocytoma that would predispose to future disease, we screened for germline mutations in genes associated with pheochromocytomas including VHL, SDHB, SDHD, and RET, all of which were negative in blood. ('SDHB', 'Gene', '6390', (214, 218)) ('VHL', 'Disease', (209, 212)) ('pheochromocytoma', 'Disease', (181, 197)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (181, 197)) ('RET', 'Gene', '5979', (230, 233)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (181, 198)) ('pheochromocytomas', 'Disease', (181, 198)) ('SDHB', 'Gene', (214, 218)) ('SDHD', 'Gene', '6392', (220, 224)) ('mutations', 'Var', (38, 47)) ('VHL', 'Disease', 'MESH:D006623', (209, 212)) ('RET', 'Gene', (230, 233)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (181, 198)) ('SDHD', 'Gene', (220, 224)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (63, 79)) ('mutations', 'Var', (146, 155)) ('pheochromocytoma', 'Disease', (63, 79)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (181, 197)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (63, 79)) 39009 23532898 SNP array analysis, using an Illumina Human Quad 610 BeadChip SNP Array, in the tumor showed mosaic heterozygous deletions in 8p12pter, 21q21.1qter, 22q11.23qter, each consistent with pheochromocytoma as well as an 11.75 Mb region of homozygosity of 11p15.3pter, detected in 70% of cells. ('tumor', 'Disease', 'MESH:D009369', (80, 85)) ('pheochromocytoma', 'Disease', (184, 200)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (184, 200)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (184, 200)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('Human', 'Species', '9606', (38, 43)) ('tumor', 'Disease', (80, 85)) ('21q21.1qter', 'Var', (136, 147)) ('p15', 'Gene', (252, 255)) ('8p12pter', 'Gene', (126, 134)) ('p15', 'Gene', '1030', (252, 255)) 39010 23532898 To support the model that 11p homozygosity was likely the predisposing factor for her pheochromocytoma, which would carry a very low adult cancer or recurrence risk, a skin biopsy of the larger leg was performed and subsequently demonstrated homozygosity of 11p15.3pter in 5% of cells (Fig. ('cancer', 'Disease', 'MESH:D009369', (139, 145)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (86, 102)) ('p15', 'Gene', '1030', (260, 263)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (86, 102)) ('larger leg', 'Phenotype', 'HP:0001833', (187, 197)) ('p15', 'Gene', (260, 263)) ('cancer', 'Phenotype', 'HP:0002664', (139, 145)) ('homozygosity', 'Var', (242, 254)) ('pheochromocytoma', 'Disease', (86, 102)) ('cancer', 'Disease', (139, 145)) 39011 23532898 Prompted by the detection of low-level mosaic paternal UPD of 11p15 in this patient, we subsequently tested several additional 11p15 methylation testing-negative patients by SNP array and identified four patients with low-level mosaic 11p UPD (Fig. ('patients', 'Species', '9606', (162, 170)) ('patients', 'Species', '9606', (204, 212)) ('p15', 'Gene', (64, 67)) ('p15', 'Gene', (129, 132)) ('p15', 'Gene', '1030', (64, 67)) ('p15', 'Gene', '1030', (129, 132)) ('mosaic paternal', 'Var', (39, 54)) ('patient', 'Species', '9606', (162, 169)) ('patient', 'Species', '9606', (76, 83)) ('patient', 'Species', '9606', (204, 211)) 39024 23532898 Here, we describe low-level mosaic paternal UPD in an 18-monthold girl resulting in IH and bilateral pheochromocytomas. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (101, 118)) ('IH', 'Phenotype', 'HP:0001528', (84, 86)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (101, 117)) ('mosaic paternal UPD', 'Var', (28, 47)) ('bilateral pheochromocytomas', 'Disease', (91, 118)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (91, 118)) ('girl', 'Species', '9606', (66, 70)) 39028 23532898 Of these, detailed molecular testing was reported for only one case and revealed a normal karyotype, no detectable mutations in RET or NF in the blood or VHL or RET in the tumor, and a normal methylation pattern of KvDMR and H19DMR. ('RET', 'Gene', '5979', (161, 164)) ('tumor', 'Phenotype', 'HP:0002664', (172, 177)) ('VHL', 'Disease', (154, 157)) ('methylation', 'MPA', (192, 203)) ('RET', 'Gene', '5979', (128, 131)) ('KvDMR', 'Var', (215, 220)) ('tumor', 'Disease', (172, 177)) ('RET', 'Gene', (161, 164)) ('H19', 'Gene', '283120', (225, 228)) ('H19', 'Gene', (225, 228)) ('RET', 'Gene', (128, 131)) ('tumor', 'Disease', 'MESH:D009369', (172, 177)) ('VHL', 'Disease', 'MESH:D006623', (154, 157)) 39030 23532898 Molecular testing in this patient showed loss of methylation at KvDMR, hypermethylation at H19DMR, and microsatellite genotyping showed paternal UPD for chromosome 11. ('patient', 'Species', '9606', (26, 33)) ('methylation', 'MPA', (49, 60)) ('H19', 'Gene', (91, 94)) ('H19', 'Gene', '283120', (91, 94)) ('paternal UPD for chromosome 11', 'CPA', (136, 166)) ('hypermethylation', 'Var', (71, 87)) ('loss', 'NegReg', (41, 45)) 39031 23532898 This patient had biparental inheritance in skin fibroblasts although genetic analysis of the pheochromocytomas was not reported. ('patient', 'Species', '9606', (5, 12)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('biparental', 'Var', (17, 27)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (93, 110)) ('pheochromocytomas', 'Disease', (93, 110)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (93, 110)) 39033 23532898 Although pheochromocytomas are uncommon in BWS, alterations of chromosome 11 have been associated with malignant pheochromocytomas. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (9, 26)) ('alterations', 'Var', (48, 59)) ('malignant pheochromocytomas', 'Disease', (103, 130)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (9, 25)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (113, 130)) ('associated', 'Reg', (87, 97)) ('malignant pheochromocytomas', 'Disease', 'MESH:D010673', (103, 130)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (9, 26)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (113, 129)) ('pheochromocytomas', 'Disease', (9, 26)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (113, 130)) ('pheochromocytomas', 'Disease', (113, 130)) 39036 23532898 CDKN1C encodes p57, a cell cycle inhibitor/tumor suppressor gene and epigenetic dysregulation of p57 has been proposed to have a role in the pathogenesis of several embryonal tumors including hepatoblastomas and rhabdomyosarcomas. ('hepatoblastoma', 'Phenotype', 'HP:0002884', (192, 206)) ('p57', 'Gene', (97, 100)) ('tumor', 'Disease', (43, 48)) ('CDKN1C', 'Gene', '1028', (0, 6)) ('tumor', 'Disease', 'MESH:D009369', (43, 48)) ('epigenetic dysregulation', 'Var', (69, 93)) ('p57', 'Gene', (15, 18)) ('tumor', 'Disease', (175, 180)) ('role', 'Reg', (129, 133)) ('rhabdomyosarcomas', 'Phenotype', 'HP:0002859', (212, 229)) ('p57', 'Gene', '1028', (97, 100)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('tumor', 'Disease', 'MESH:D009369', (175, 180)) ('CDKN1C', 'Gene', (0, 6)) ('embryonal tumors', 'Disease', (165, 181)) ('tumors', 'Phenotype', 'HP:0002664', (175, 181)) ('hepatoblastomas and rhabdomyosarcomas', 'Disease', 'MESH:D018197', (192, 229)) ('embryonal tumors', 'Phenotype', 'HP:0002898', (165, 181)) ('embryonal tumors', 'Disease', 'MESH:D009373', (165, 181)) ('p57', 'Gene', '1028', (15, 18)) ('tumor', 'Phenotype', 'HP:0002664', (175, 180)) 39047 23532898 The detection of both hypomethylation at KvDMR and hypermethylation at H19DMR has been used as a surrogate marker for paternal UPD 11p15. ('p15', 'Gene', (133, 136)) ('p15', 'Gene', '1030', (133, 136)) ('hypermethylation', 'Var', (51, 67)) ('KvDMR', 'Var', (41, 46)) ('H19', 'Gene', '283120', (71, 74)) ('hypomethylation', 'Var', (22, 37)) ('H19', 'Gene', (71, 74)) 39050 23532898 As noted above, this led us to consider that patients with previously undetected methylation abnormalities could be assayed for low-level mosaic UPD using this SNP array analysis, as we subsequently noted in Patients 2-4 with low-level mosaic paternal UPD at 11p15 in blood previously undetected by methylation analysis. ('Patients', 'Species', '9606', (208, 216)) ('p15', 'Gene', (261, 264)) ('p15', 'Gene', '1030', (261, 264)) ('patients', 'Species', '9606', (45, 53)) ('mosaic paternal UPD at', 'Var', (236, 258)) 39055 23532898 The overall rate of paternal UPD detection is lower than we expected (23%) but consistent with the published molecular diagnosis rate for patients with isolated hemihyperplasia of <30%. ('isolated hemihyperplasia', 'Phenotype', 'HP:0001528', (152, 176)) ('isolated hemihyperplasia', 'Disease', (152, 176)) ('isolated hemihyperplasia', 'Disease', 'MESH:C565524', (152, 176)) ('patients', 'Species', '9606', (138, 146)) ('paternal', 'Var', (20, 28)) 39056 23532898 Accordingly, we feel the use of SNP array analysis affords a notable increase in the sensitivity of mosaic paternal UPD 11p15 diagnosis for patients with IH and BWS over MS-RFA, MS-PCR, or MS-MLPA analysis alone. ('increase', 'PosReg', (69, 77)) ('p15', 'Gene', (122, 125)) ('p15', 'Gene', '1030', (122, 125)) ('mosaic paternal UPD', 'Var', (100, 119)) ('IH', 'Phenotype', 'HP:0001528', (154, 156)) ('patients', 'Species', '9606', (140, 148)) 39062 23532898 Given our experience, we now perform sensitive SNP array analysis with a focus on low-level mosaic paternal UPD 11p15 in the assessment of all patients with IH or BWS, even those with subtle asymmetry. ('BWS', 'Disease', (163, 166)) ('patients', 'Species', '9606', (143, 151)) ('mosaic paternal', 'Var', (92, 107)) ('IH', 'Phenotype', 'HP:0001528', (157, 159)) ('p15', 'Gene', (114, 117)) ('p15', 'Gene', '1030', (114, 117)) 39069 23532898 We suggest thatSNP array analysisto detect low-level mosaic paternal UPD is a sensitive adjunct to identify and stratify patients at higher risk for malignancy. ('malignancy', 'Disease', (149, 159)) ('mosaic paternal', 'Var', (53, 68)) ('patients', 'Species', '9606', (121, 129)) ('malignancy', 'Disease', 'MESH:D009369', (149, 159)) 39070 23532898 The lower level of detection afforded by SNP array analysis with our methodology can be used to detect patients with low-level mosaic pUPD 11 and further longitudinal study of these patients will help elicit their tumor risk and allow modification of screening recommendations to lead to improved clinical outcomes. ('tumor', 'Disease', 'MESH:D009369', (214, 219)) ('tumor', 'Phenotype', 'HP:0002664', (214, 219)) ('patients', 'Species', '9606', (182, 190)) ('tumor', 'Disease', (214, 219)) ('patients', 'Species', '9606', (103, 111)) ('mosaic pUPD', 'Var', (127, 138)) 39119 23448279 Due to a large intra-operative blood loss because of the tumor's extremely high vascularization our patient received high volume replacement in the form of crystalloids (7500mL), colloids (2000mL), and multiple blood transfusions (red blood cells (RBC) 1400mL and fresh frozen plasma (FFP) 1000mL). ('intra-operative blood loss', 'Disease', (15, 41)) ('intra-operative blood loss', 'Disease', 'MESH:D006473', (15, 41)) ('tumor', 'Disease', 'MESH:D009369', (57, 62)) ('7500mL', 'Var', (170, 176)) ('patient', 'Species', '9606', (100, 107)) ('tumor', 'Phenotype', 'HP:0002664', (57, 62)) ('tumor', 'Disease', (57, 62)) ('2000mL', 'Var', (189, 195)) 39261 21599949 Incidentally, we previously tried to establish the immunohistochemical prognostic indicators of GP using bcl-2, p53, and Ki-67, which are acceptable prognostic indicators in several kinds of neuroendocrine tumors. ('bcl-2', 'Gene', (105, 110)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (191, 212)) ('tumor', 'Phenotype', 'HP:0002664', (206, 211)) ('neuroendocrine tumors', 'Disease', (191, 212)) ('bcl-2', 'Gene', '596', (105, 110)) ('tumors', 'Phenotype', 'HP:0002664', (206, 212)) ('Ki-67', 'Var', (121, 126)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (191, 211)) ('p53', 'Gene', (112, 115)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (191, 212)) ('p53', 'Gene', '7157', (112, 115)) 39409 33882857 Clinical diagnoses were established by classic CA-related paroxysmal complaints (headache, palpitations, and/or profuse sweating) in combination with adrenal tumors with features suggestive of PPGLs on computed tomography (CT) or magnetic resonance imaging (MRI) and elevated plasma CA or metanephrine (MN)/normetanephrine (NMN) levels at least two times the upper limit of normal (ULN). ('adrenal tumors', 'Disease', 'MESH:D000310', (150, 164)) ('tumors', 'Phenotype', 'HP:0002664', (158, 164)) ('palpitations', 'Phenotype', 'HP:0001962', (91, 103)) ('palpitation', 'Phenotype', 'HP:0001962', (91, 102)) ('elevated', 'PosReg', (267, 275)) ('sweating', 'Phenotype', 'HP:0000975', (120, 128)) ('tumor', 'Phenotype', 'HP:0002664', (158, 163)) ('PPGLs', 'Var', (193, 198)) ('profuse sweating', 'Phenotype', 'HP:0000975', (112, 128)) ('elevated plasma CA', 'Phenotype', 'HP:0003072', (267, 285)) ('PPGLs', 'Chemical', '-', (193, 198)) ('headache', 'Phenotype', 'HP:0002315', (81, 89)) ('adrenal tumors', 'Disease', (150, 164)) ('metanephrine', 'Chemical', 'MESH:D008676', (310, 322)) ('headache', 'Disease', (81, 89)) ('paroxysmal complaints', 'Disease', (58, 79)) ('CA-related', 'Disease', (47, 57)) ('NMN', 'Chemical', 'MESH:D009647', (324, 327)) ('metanephrine', 'Chemical', 'MESH:D008676', (289, 301)) ('headache', 'Disease', 'MESH:D006261', (81, 89)) ('normetanephrine', 'Chemical', 'MESH:D009647', (307, 322)) 39482 33882857 The main impairment pattern in patients with TTS on strain analysis was the apical sparing pattern, which is a distinct result from previous studies. ('patients', 'Species', '9606', (31, 39)) ('apical sparing', 'Phenotype', 'HP:0032176', (76, 90)) ('apical sparing pattern', 'CPA', (76, 98)) ('apical sparing pattern', 'Phenotype', 'HP:0032176', (76, 98)) ('TTS', 'Var', (45, 48)) 39489 30008476 Role of MDH2 pathogenic variant in pheochromocytoma and paraganglioma patients MDH2 (malate dehydrogenase 2) has recently been proposed as a novel potential pheochromocytoma/paraganglioma (PPGL) susceptibility gene, but its role in the disease has not been addressed. ('pheochromocytoma', 'Disease', (157, 173)) ('paraganglioma', 'Phenotype', 'HP:0002668', (56, 69)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (157, 173)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (35, 51)) ('malate dehydrogenase 2', 'Gene', (85, 107)) ('paraganglioma', 'Phenotype', 'HP:0002668', (174, 187)) ('MDH2', 'Gene', '4191', (79, 83)) ('variant', 'Var', (24, 31)) ('pheochromocytoma', 'Disease', (35, 51)) ('MDH2', 'Gene', '4191', (8, 12)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (35, 51)) ('malate dehydrogenase 2', 'Gene', '4191', (85, 107)) ('PPGL', 'Chemical', '-', (189, 193)) ('paraganglioma', 'Disease', (56, 69)) ('paraganglioma', 'Disease', 'MESH:D010235', (56, 69)) ('MDH2', 'Gene', (79, 83)) ('paraganglioma', 'Disease', (174, 187)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (157, 173)) ('MDH2', 'Gene', (8, 12)) ('paraganglioma', 'Disease', 'MESH:D010235', (174, 187)) 39490 30008476 This study aimed to determine the prevalence of MDH2 pathogenic variants among PPGL patients and determine the associated phenotype. ('patients', 'Species', '9606', (84, 92)) ('MDH2', 'Gene', '4191', (48, 52)) ('MDH2', 'Gene', (48, 52)) ('pathogenic', 'Reg', (53, 63)) ('PPGL', 'Chemical', '-', (79, 83)) ('variants', 'Var', (64, 72)) 39492 30008476 Five variants with potential involvement in pathogenicity were identified: three missense (p.Arg104Gly, p.Val160Met and p.Ala256Thr), one in-frame deletion (p.Lys314del), and a splice-site variant (c.429+1G>T). ('p.Lys314del', 'Var', (157, 168)) ('c.429+1G>T', 'Var', (198, 208)) ('involvement', 'Reg', (29, 40)) ('p.Arg104Gly', 'Mutation', 'rs1474905443', (91, 102)) ('p.Lys314del', 'Mutation', 'p.314del', (157, 168)) ('p.Arg104Gly', 'Var', (91, 102)) ('p.Ala256Thr', 'Var', (120, 131)) ('p.Val160Met', 'Mutation', 'rs138541865', (104, 115)) ('c.429+1G>T', 'Mutation', 'rs782251807', (198, 208)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (120, 131)) ('p.Val160Met', 'Var', (104, 115)) 39494 30008476 This study suggests that MDH2 pathogenic variants may play a role in PPGL susceptibility and that they might be responsible for less than 1% of PPGLs in patients without pathogenic variants in other major PPGL driver genes, a prevalence similar to the one recently described for other PPGL genes. ('PPGLs', 'Disease', (144, 149)) ('variants', 'Var', (41, 49)) ('PPGL', 'Chemical', '-', (205, 209)) ('susceptibility', 'Reg', (74, 88)) ('MDH2', 'Gene', '4191', (25, 29)) ('MDH2', 'Gene', (25, 29)) ('patients', 'Species', '9606', (153, 161)) ('PGLs', 'Phenotype', 'HP:0002668', (145, 149)) ('play', 'Reg', (54, 58)) ('PPGL', 'Chemical', '-', (144, 148)) ('role', 'Reg', (61, 65)) ('PPGL', 'Gene', (69, 73)) ('PPGL', 'Chemical', '-', (285, 289)) ('PPGL', 'Chemical', '-', (69, 73)) 39498 30008476 Among PPGL-associated genes, seven have been found almost exclusively mutated in the germline (SDHA, SDHB, SDHC, SDHD, SDHAF2, FH, and TMEM127), four either in the germline or somatically (RET, VHL, NF1, and MAX), one postzygotically or somatically (EPAS1), and the last one only somatically (HRAS). ('SDHD', 'Gene', (113, 117)) ('NF1', 'Gene', (199, 202)) ('SDHB', 'Gene', '6390', (101, 105)) ('SDHA', 'Gene', (119, 123)) ('NF1', 'Gene', '4763', (199, 202)) ('EPAS1', 'Gene', (250, 255)) ('TMEM127', 'Gene', (135, 142)) ('SDHC', 'Gene', (107, 111)) ('SDHA', 'Gene', '6389', (119, 123)) ('SDHAF2', 'Gene', '54949', (119, 125)) ('SDHAF2', 'Gene', (119, 125)) ('SDHA', 'Gene', (95, 99)) ('RET', 'Gene', '5979', (189, 192)) ('SDHB', 'Gene', (101, 105)) ('VHL', 'Gene', (194, 197)) ('TMEM127', 'Gene', '55654', (135, 142)) ('SDHA', 'Gene', '6389', (95, 99)) ('PPGL-associated genes', 'Gene', (6, 27)) ('PPGL', 'Chemical', '-', (6, 10)) ('EPAS1', 'Gene', '2034', (250, 255)) ('FH', 'Disease', 'MESH:D006938', (127, 129)) ('HRAS', 'Gene', '3265', (293, 297)) ('SDHD', 'Gene', '6392', (113, 117)) ('VHL', 'Gene', '7428', (194, 197)) ('HRAS', 'Gene', (293, 297)) ('RET', 'Gene', (189, 192)) ('SDHC', 'Gene', '6391', (107, 111)) ('mutated', 'Var', (70, 77)) 39500 30008476 In addition, other mechanisms such as point variants in the promoter region of TERT, SDHC promoter epimutations, or rearrangements involving MAML3, BRAF, NGFR, and NF1 have been also described. ('NGFR', 'Gene', (154, 158)) ('SDHC', 'Gene', (85, 89)) ('SDHC', 'Gene', '6391', (85, 89)) ('point variants', 'Var', (38, 52)) ('NF1', 'Gene', (164, 167)) ('TERT', 'Gene', (79, 83)) ('NGFR', 'Gene', '4804', (154, 158)) ('MAML3', 'Gene', '55534', (141, 146)) ('TERT', 'Gene', '7015', (79, 83)) ('NF1', 'Gene', '4763', (164, 167)) ('MAML3', 'Gene', (141, 146)) ('BRAF', 'Gene', '673', (148, 152)) ('epimutations', 'Var', (99, 111)) ('rearrangements', 'Var', (116, 130)) ('BRAF', 'Gene', (148, 152)) 39503 30008476 A single MDH2 PV affecting a donor splice-site (c.429+1G>A) was identified in a 55-year-old man with multiple noradrenergic PGLs associated with bone metastasis, and in one apparently unaffected relative with a positive biochemical diagnosis of the disease. ('c.429+1G>A', 'Var', (48, 58)) ('associated with', 'Reg', (129, 144)) ('PGLs', 'Phenotype', 'HP:0002668', (124, 128)) ('bone metastasis', 'CPA', (145, 160)) ('MDH2', 'Gene', '4191', (9, 13)) ('MDH2', 'Gene', (9, 13)) ('c.429+1G>A', 'Mutation', 'c.429+1G>A', (48, 58)) 39505 30008476 As alterations in Krebs cycle genes have been associated with a higher metastatic risk of the disease, an early genetic diagnosis of unaffected carriers in these families seems to be crucial. ('Krebs', 'Chemical', '-', (18, 23)) ('metastatic', 'CPA', (71, 81)) ('associated', 'Reg', (46, 56)) ('alterations', 'Var', (3, 14)) ('Krebs cycle genes', 'Gene', (18, 35)) 39509 30008476 All MDH2 genetic changes, except one in-frame deletion and one variant affecting a donor splice-site, consisted of single-nucleotide substitutions leading to missense, synonymous, or intronic changes, for which we assessed their functional impact. ('synonymous', 'MPA', (168, 178)) ('intronic changes', 'MPA', (183, 199)) ('consisted of', 'Reg', (102, 114)) ('MDH2', 'Gene', '4191', (4, 8)) ('MDH2', 'Gene', (4, 8)) ('changes', 'Var', (17, 24)) ('missense', 'MPA', (158, 166)) 39524 30008476 MDH2 gross deletions were tested in 216 cases with good germline DNA quality using a semiquantitative multiplex polymerase chain reaction (PCR) method with labeled primers, as previously described for other genes. ('gross deletions', 'Var', (5, 20)) ('MDH2', 'Gene', '4191', (0, 4)) ('MDH2', 'Gene', (0, 4)) 39526 30008476 The frequency of MDH2 variants was investigated in public databases: dbSNP (https://www.ncbi.nlm.nih.gov/SNP), COSMIC (http://cancer.sanger.ac.uk/cosmic), and gnomAD (http://gnomad.broadinstitute.org/). ('MDH2', 'Gene', '4191', (17, 21)) ('MDH2', 'Gene', (17, 21)) ('cancer', 'Disease', (126, 132)) ('cancer', 'Disease', 'MESH:D009369', (126, 132)) ('variants', 'Var', (22, 30)) 39527 30008476 MDH2 variants identified in <0.1% of the population and without homozygotes described were included in the study and used for further analyses. ('variants', 'Var', (5, 13)) ('MDH2', 'Gene', '4191', (0, 4)) ('MDH2', 'Gene', (0, 4)) 39528 30008476 LOH of the MDH2 variants in tumor DNA was assessed by direct sequencing (if material was available). ('tumor', 'Disease', (28, 33)) ('MDH2', 'Gene', '4191', (11, 15)) ('MDH2', 'Gene', (11, 15)) ('tumor', 'Disease', 'MESH:D009369', (28, 33)) ('variants', 'Var', (16, 24)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) 39529 30008476 Three distinct in silico approaches were used to assess the functional and three-dimensional (3D) structural effect of the missense variants: (1) measure of the evolutionary conservation in the genome of vertebrate and mammalian species (i.e., phyloP, phastCons, GERP++), (2) prediction of the impact of amino acid substitutions in protein function (i.e., SIFT, Polyphen2, LRT, MutationAssessor, fathmm-MKL, PROVEAN, MetaSVM, MetaLR, MutationTaster), and (3) prediction of protein 3D destabilization (i.e., PoPMu-SiCv3.1, CUPSAT, I-Mutant v3.0, MAESTRO, INPS-3D). ('protein', 'Protein', (332, 339)) ('destabilization', 'NegReg', (484, 499)) ('amino acid substitutions', 'Var', (304, 328)) ('GERP', 'Gene', (263, 267)) ('GERP', 'Gene', '81603', (263, 267)) ('protein', 'Protein', (473, 480)) ('mammalian', 'Species', '9606', (219, 228)) 39533 30008476 QuickChange Lightning Site-Directed Mutagenesis Kit (Agilent) was used to generate missense variants in pCMV6-AC-MDH2 (Origene), a plasmid containing the full complementary DNA (cDNA) sequence (NM_005918) of the human MDH2 gene. ('human', 'Species', '9606', (212, 217)) ('-AC', 'Chemical', 'MESH:D000186', (109, 112)) ('missense variants', 'Var', (83, 100)) ('MDH2', 'Gene', '4191', (218, 222)) ('MDH2', 'Gene', '4191', (113, 117)) ('MDH2', 'Gene', (218, 222)) ('MDH2', 'Gene', (113, 117)) 39534 30008476 We generated a polymorphism with a minor allele frequency (MAF) = 0.037 in gnomAD (rs10256: p.Lys301Arg), to be used as control. ('p.Lys301Arg', 'Mutation', 'rs10256', (92, 103)) ('rs10256', 'Mutation', 'rs10256', (83, 90)) ('p.Lys301Arg', 'Var', (92, 103)) ('rs10256: p.Lys301Arg', 'Var', (83, 103)) ('gnomAD', 'Gene', (75, 81)) 39544 30008476 Twelve MDH2 heterozygous variants (Fig. ('variants', 'Var', (25, 33)) ('MDH2', 'Gene', '4191', (7, 11)) ('MDH2', 'Gene', (7, 11)) 39546 30008476 Clinical data of the MDH2 carriers are detailed in Table S3. ('carriers', 'Var', (26, 34)) ('MDH2', 'Gene', '4191', (21, 25)) ('MDH2', 'Gene', (21, 25)) 39550 30008476 Similarly, the splicing for three of the four intronic variants (c.320-26A>C, c.733 +47G>A, and c.734-5C>A) was not predicted affected, while it was anticipated as altered in the remaining intronic variant (c.319+37G>A) identified in a 48-year-old patient with a noradrenergic PCC. ('c.320-26A>C', 'Mutation', 'c.320-26A>C', (65, 76)) ('+47G>A', 'Var', (84, 90)) ('PCC', 'Gene', (277, 280)) ('+47G>A', 'SUBSTITUTION', 'None', (84, 90)) ('c.319+37G>A', 'Var', (207, 218)) ('c.320-26A>C', 'Var', (65, 76)) ('c.734-5C>A', 'Mutation', 'c.734-5C>A', (96, 106)) ('patient', 'Species', '9606', (248, 255)) ('altered', 'Reg', (164, 171)) ('PCC', 'Gene', '1421', (277, 280)) ('c.319+37G>A', 'Mutation', 'c.319+37G>A', (207, 218)) 39552 30008476 Of the five MDH2 missense variants identified (Table 2), only one (p.Ser3Phe) was outside the functional domains in the transit peptide to mitochondria. ('MDH2', 'Gene', '4191', (12, 16)) ('p.Ser3Phe', 'Mutation', 'p.S3F', (67, 76)) ('MDH2', 'Gene', (12, 16)) ('missense variants', 'Var', (17, 34)) 39553 30008476 The variants p.Arg104Gly, p.Gln130Arg, and p.Val160Met were positioned in the lactate/malate dehydrogenase, NAD-binding domain; and p.Ala256Thr in the lactate/malate dehydrogenase, alpha/beta C-terminal domain. ('p.Ala256Thr', 'Mutation', 'rs147655350', (132, 143)) ('NAD', 'Chemical', 'MESH:D009243', (108, 111)) ('malate dehydrogenase', 'Gene', (86, 106)) ('p.Val160Met', 'Mutation', 'rs138541865', (43, 54)) ('p.Val160Met', 'Var', (43, 54)) ('p.Arg104Gly', 'Mutation', 'rs1474905443', (13, 24)) ('p.Arg104Gly', 'Var', (13, 24)) ('malate dehydrogenase', 'Gene', (159, 179)) ('p.Gln130Arg', 'Mutation', 'p.Q130R', (26, 37)) ('malate dehydrogenase', 'Gene', '4200', (86, 106)) ('p.Gln130Arg', 'Var', (26, 37)) ('malate dehydrogenase', 'Gene', '4200', (159, 179)) ('p.Ala256Thr', 'Var', (132, 143)) 39556 30008476 Three of the missense variants (p.Arg104Gly, p.Val160Met, and p.Ala256Thr) were predicted to have a damaging effect (impaired functional predictions and destabilization of the 3D structure) (Table 2; Table S4). ('functional', 'MPA', (126, 136)) ('p.Arg104Gly', 'Mutation', 'rs1474905443', (32, 43)) ('p.Arg104Gly', 'Var', (32, 43)) ('p.Ala256Thr', 'Var', (62, 73)) ('destabilization', 'NegReg', (153, 168)) ('p.Val160Met', 'Mutation', 'rs138541865', (45, 56)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (62, 73)) ('p.Val160Met', 'Var', (45, 56)) ('impaired', 'NegReg', (117, 125)) 39561 30008476 The variants p.Arg104Gly and p.Ala256Thr were found in two young patients (25 and 29 years old, respectively) with norepinephrine-producing PCC both diagnosed during pregnancy. ('p.Ala256Thr', 'Var', (29, 40)) ('PCC', 'Gene', (140, 143)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (29, 40)) ('p.Arg104Gly', 'Mutation', 'rs1474905443', (13, 24)) ('p.Arg104Gly', 'Var', (13, 24)) ('patients', 'Species', '9606', (65, 73)) ('norepinephrine', 'Chemical', 'MESH:D009638', (115, 129)) ('PCC', 'Gene', '1421', (140, 143)) 39563 30008476 The p.Val160Met was identified in a PCC patient without biochemical data. ('PCC', 'Gene', (36, 39)) ('patient', 'Species', '9606', (40, 47)) ('PCC', 'Gene', '1421', (36, 39)) ('p.Val160Met', 'Mutation', 'rs138541865', (4, 15)) ('p.Val160Met', 'Var', (4, 15)) 39564 30008476 The remaining two missense variants (p.Ser3Phe and p.Gln130Arg) were found in patients older than 45 years, diagnosed with PCC; the former involving an adrenergic tumor and the latter without evidence of excess in catecholamine production (Table S3). ('p.Ser3Phe', 'Mutation', 'p.S3F', (37, 46)) ('p.Gln130Arg', 'Mutation', 'p.Q130R', (51, 62)) ('tumor', 'Disease', 'MESH:D009369', (163, 168)) ('PCC', 'Gene', (123, 126)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('p.Gln130Arg', 'Var', (51, 62)) ('patients', 'Species', '9606', (78, 86)) ('catecholamine', 'Chemical', 'MESH:D002395', (214, 227)) ('tumor', 'Disease', (163, 168)) ('p.Ser3Phe', 'Var', (37, 46)) ('PCC', 'Gene', '1421', (123, 126)) ('involving', 'Reg', (139, 148)) 39568 30008476 Furthermore, the c.429+1G>T variant, previously described, was found in a 57-year-old patient diagnosed with a PCC and liver metastases. ('c.429+1G>T', 'Mutation', 'rs782251807', (17, 27)) ('liver metastases', 'Disease', 'MESH:D009362', (119, 135)) ('PCC', 'Gene', '1421', (111, 114)) ('patient', 'Species', '9606', (86, 93)) ('c.429+1G>T', 'Var', (17, 27)) ('PCC', 'Gene', (111, 114)) ('liver metastases', 'Disease', (119, 135)) 39570 30008476 RBP1 measurement was performed in four available tumors (p.Ser3Phe, p.Arg104Gly, p.Val160Met, and p.Lys314del-tumor), observing a reduced RBP1 expression in three tumors compared with controls: 93.86 +- 1.83% (p = 0.007), 83.18 +- 0.65% (p = 0.007), and 82.44 +- 19.72% (p = 0.030) for p.Lys314del-, p.Arg104Gly-, and p.Val160Met-tumor, respectively (Fig. ('p.Val160Met', 'Mutation', 'rs138541865', (318, 329)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('RBP1', 'Gene', (138, 142)) ('tumor', 'Disease', (330, 335)) ('p.Lys314del-', 'Var', (286, 298)) ('p.Arg104Gly-', 'Var', (300, 312)) ('p.Arg104Gly', 'Mutation', 'rs1474905443', (68, 79)) ('RBP1', 'Gene', '5947', (138, 142)) ('tumors', 'Disease', (49, 55)) ('tumor', 'Disease', (163, 168)) ('p.Lys314del', 'Mutation', 'p.314del', (286, 297)) ('tumor', 'Disease', 'MESH:D009369', (330, 335)) ('tumor', 'Disease', 'MESH:D009369', (163, 168)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('tumors', 'Phenotype', 'HP:0002664', (163, 169)) ('tumors', 'Disease', 'MESH:D009369', (49, 55)) ('RBP1', 'Gene', (0, 4)) ('p.Ser3Phe', 'Mutation', 'p.S3F', (57, 66)) ('RBP1', 'Gene', '5947', (0, 4)) ('expression', 'MPA', (143, 153)) ('tumor', 'Phenotype', 'HP:0002664', (330, 335)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('tumor', 'Disease', (49, 54)) ('tumors', 'Disease', (163, 169)) ('p.Arg104Gly', 'Mutation', 'rs1474905443', (300, 311)) ('tumor', 'Disease', 'MESH:D009369', (49, 54)) ('p.Lys314del', 'Mutation', 'p.314del', (98, 109)) ('p.Val160Met', 'Mutation', 'rs138541865', (81, 92)) ('tumors', 'Phenotype', 'HP:0002664', (49, 55)) ('tumor', 'Disease', (110, 115)) ('p.Arg104Gly', 'Var', (68, 79)) ('tumors', 'Disease', 'MESH:D009369', (163, 169)) ('reduced', 'NegReg', (130, 137)) ('tumor', 'Disease', 'MESH:D009369', (110, 115)) 39571 30008476 None of the variants was associated with an altered MDH2 localization, or mitochondrial quantity and morphology (see Supplemental Results). ('MDH2', 'Gene', '4191', (52, 56)) ('mitochondrial', 'MPA', (74, 87)) ('MDH2', 'Gene', (52, 56)) ('variants', 'Var', (12, 20)) ('localization', 'MPA', (57, 69)) 39572 30008476 Only variant p.Arg104Gly displayed a significant lower MDH2 enzymatic activity at saturating concentration of substrates (p < 0.0001) compared with WT, comparable with the activity detected in the KD cells not expressing MDH2 (Fig. ('MDH2', 'Gene', '4191', (55, 59)) ('MDH2', 'Gene', (55, 59)) ('MDH2', 'Gene', '4191', (221, 225)) ('p.Arg104Gly', 'Var', (13, 24)) ('MDH2', 'Gene', (221, 225)) ('lower', 'NegReg', (49, 54)) ('p.Arg104Gly', 'Mutation', 'rs1474905443', (13, 24)) ('enzymatic activity', 'MPA', (60, 78)) 39573 30008476 On the other hand, citrate synthase activity, present exclusively in the mitochondria, was similar for all variants (Table S2), suggesting that none of them produced an increased mitochondrial biogenesis to compensate the possible aberrant MDH2 variant. ('citrate synthase', 'Gene', '1431', (19, 35)) ('mitochondrial biogenesis', 'MPA', (179, 203)) ('variant', 'Var', (245, 252)) ('MDH2', 'Gene', '4191', (240, 244)) ('MDH2', 'Gene', (240, 244)) ('citrate synthase', 'Gene', (19, 35)) 39575 30008476 LOH was not detected in any of the tumors carrying the missense variants. ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('tumors', 'Phenotype', 'HP:0002664', (35, 41)) ('tumors', 'Disease', (35, 41)) ('tumors', 'Disease', 'MESH:D009369', (35, 41)) ('missense variants', 'Var', (55, 72)) 39576 30008476 To evaluate if MDH2 variants could exert a dominant-negative effect on MDH2 WT, we took as a model the p.Arg104Gly variant. ('p.Arg104Gly', 'Mutation', 'rs1474905443', (103, 114)) ('p.Arg104Gly', 'Var', (103, 114)) ('variants', 'Var', (20, 28)) ('MDH2', 'Gene', (15, 19)) ('MDH2', 'Gene', '4191', (15, 19)) ('MDH2', 'Gene', (71, 75)) ('MDH2', 'Gene', '4191', (71, 75)) 39579 30008476 Cells cotransfected with both WT and p.Arg104Gly plasmids exhibited lower enzymatic activity in comparison with those cotransfected with WT and EV ones (27.8% +- 22.6; p = 0.0002) (Fig. ('lower', 'NegReg', (68, 73)) ('p.Arg104Gly', 'Mutation', 'rs1474905443', (37, 48)) ('p.Arg104Gly', 'Var', (37, 48)) ('enzymatic activity', 'MPA', (74, 92)) ('EV', 'Chemical', '-', (144, 146)) 39580 30008476 Another assay was designed to evaluate if p.Val160Met and p.Ala256Thr variants affected the affinity of the enzyme for the substrates, instead of the maximal activity. ('affinity', 'MPA', (92, 100)) ('p.Ala256Thr', 'Var', (58, 69)) ('p.Val160Met', 'Mutation', 'rs138541865', (42, 53)) ('affected', 'Reg', (79, 87)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (58, 69)) ('p.Val160Met', 'Var', (42, 53)) ('maximal activity', 'MPA', (150, 166)) 39582 30008476 A tendency of reduced enzymatic activity when decreasing malate concentration was observed for p.Val160Met, significant at 5 mM (5-fold reduction to malate saturating concentration, p = 0.0256) (Fig. ('reduced', 'NegReg', (14, 21)) ('p.Val160Met', 'Mutation', 'rs138541865', (95, 106)) ('malate', 'Chemical', 'MESH:C030298', (57, 63)) ('p.Val160Met', 'Var', (95, 106)) ('reduction', 'NegReg', (136, 145)) ('enzymatic', 'MPA', (22, 31)) ('malate', 'Chemical', 'MESH:C030298', (149, 155)) ('malate concentration', 'MPA', (57, 77)) ('malate saturating concentration', 'MPA', (149, 180)) 39584 30008476 Furthermore, a subtle decrease in the activity was observed for p.Ala256Thr when diminishing concentration of NAD+ (Fig. ('activity', 'MPA', (38, 46)) ('decrease', 'NegReg', (22, 30)) ('p.Ala256Thr', 'Var', (64, 75)) ('NAD+', 'Chemical', 'MESH:D009243', (110, 114)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (64, 75)) ('diminishing', 'NegReg', (81, 92)) 39587 30008476 Simulations of the dimers of the WT apoenzyme, and the p.Ala256Thr and p.Val160Met variants revealed differences in their principal motions. ('p.Val160Met', 'Mutation', 'rs138541865', (71, 82)) ('p.Val160Met', 'Var', (71, 82)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (55, 66)) ('principal motions', 'MPA', (122, 139)) ('p.Ala256Thr', 'Var', (55, 66)) ('differences', 'Reg', (101, 112)) 39588 30008476 In the p.Ala256Thr mutant, the character of the main motions was conserved (Fig. ('p.Ala256Thr', 'Var', (7, 18)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (7, 18)) ('main motions', 'MPA', (48, 60)) 39589 30008476 S5B), whereas in the p.Val160Met mutant the relative movement of the monomers was strongly reduced (Fig. ('S5B', 'Gene', '5711', (0, 3)) ('S5B', 'Gene', (0, 3)) ('relative movement of the monomers', 'MPA', (44, 77)) ('reduced', 'NegReg', (91, 98)) ('p.Val160Met', 'Mutation', 'rs138541865', (21, 32)) ('p.Val160Met', 'Var', (21, 32)) 39590 30008476 Although the dynamics of the p.Ala256Thr variant were similar to that of the WT, closer inspection revealed conformational changes. ('conformational', 'MPA', (108, 122)) ('p.Ala256Thr', 'Var', (29, 40)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (29, 40)) 39591 30008476 In the WT and p.Val160Met variant, the side chain of Phe260, neighboring Ala/Thr256, switches between two orientations, while in the p.Ala256Thr mutant it remains immobile (Fig. ('p.Val160Met', 'Var', (14, 25)) ('p.Val160Met', 'Mutation', 'rs138541865', (14, 25)) ('Phe260', 'Chemical', '-', (53, 59)) ('switches', 'Reg', (85, 93)) ('Ala/Thr256', 'Var', (73, 83)) ('side chain', 'MPA', (39, 49)) ('Phe260', 'Var', (53, 59)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (133, 144)) ('immobile', 'MPA', (163, 171)) ('Ala/Thr256', 'SUBSTITUTION', 'None', (73, 83)) 39592 30008476 The results suggest that the p.Ala256Thr variant affects the conformation of the neighboring residues, which contribute to the dimeric interface. ('conformation', 'MPA', (61, 73)) ('p.Ala256Thr', 'Var', (29, 40)) ('affects', 'Reg', (49, 56)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (29, 40)) 39593 30008476 This implies that the p.Ala256Thr variant may affect dimerization of MDH2. ('p.Ala256Thr', 'Var', (22, 33)) ('MDH2', 'Gene', (69, 73)) ('dimerization', 'MPA', (53, 65)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (22, 33)) ('MDH2', 'Gene', '4191', (69, 73)) ('affect', 'Reg', (46, 52)) 39594 30008476 In the p.Val160Met variant, changes in the dynamics of the substrate-binding site may affect substrate affinity. ('affect', 'Reg', (86, 92)) ('substrate affinity', 'MPA', (93, 111)) ('p.Val160Met', 'Mutation', 'rs138541865', (7, 18)) ('changes', 'Reg', (28, 35)) ('p.Val160Met', 'Var', (7, 18)) ('dynamics of the substrate-binding site', 'MPA', (43, 81)) 39595 30008476 After the identification of major susceptibility PPGL genes, the list of other genes with modest contributions to the disease has kept growing and it is likely that this number will continue to increase over the near future. ('genes', 'Var', (54, 59)) ('PPGL', 'Gene', (49, 53)) ('PPGL', 'Chemical', '-', (49, 53)) ('susceptibility', 'Reg', (34, 48)) 39598 30008476 We were able to classify 2 MDH2 variants as pathogenic and provide evidence that suggests an altered molecular function of MDH2 in 2 others (which have been designated as likely PV), following the criteria established by the American College of Medical Genetics and Genomics and the Association for Molecular Pathology guidelines. ('MDH2', 'Gene', (123, 127)) ('molecular function', 'MPA', (101, 119)) ('MDH2', 'Gene', '4191', (27, 31)) ('altered', 'Reg', (93, 100)) ('MDH2', 'Gene', (27, 31)) ('variants', 'Var', (32, 40)) ('MDH2', 'Gene', '4191', (123, 127)) 39599 30008476 Furthermore, a new patient, carrying the already reported c.429+1G>T MDH2 variant, was identified. ('patient', 'Species', '9606', (19, 26)) ('c.429+1G>T', 'Mutation', 'rs782251807', (58, 68)) ('MDH2', 'Gene', (69, 73)) ('MDH2', 'Gene', '4191', (69, 73)) ('c.429+1G>T', 'Var', (58, 68)) 39600 30008476 RBP1 expression in the tumor, bioinformatics predictions, and functional assays suggested that p.Arg104Gly is a PV located in the highly conserved NAD-binding site and significantly impairing MDH2 activity. ('MDH2', 'Gene', '4191', (192, 196)) ('NAD', 'Chemical', 'MESH:D009243', (147, 150)) ('MDH2', 'Gene', (192, 196)) ('RBP1', 'Gene', '5947', (0, 4)) ('tumor', 'Disease', 'MESH:D009369', (23, 28)) ('p.Arg104Gly', 'Mutation', 'rs1474905443', (95, 106)) ('p.Arg104Gly', 'Var', (95, 106)) ('activity', 'MPA', (197, 205)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('tumor', 'Disease', (23, 28)) ('impairing', 'NegReg', (182, 191)) ('RBP1', 'Gene', (0, 4)) 39604 30008476 Enzymatic assays performed by cotransfection of WT and p.Arg104Gly plasmids resembling the heterozygous character of this PV suggested a dominant-negative effect of the p.Arg104Gly-mutant. ('p.Arg104Gly', 'Var', (55, 66)) ('p.Arg104Gly-mutant', 'Var', (169, 187)) ('p.Arg104Gly', 'Mutation', 'rs1474905443', (169, 180)) ('p.Arg104Gly', 'Mutation', 'rs1474905443', (55, 66)) 39605 30008476 The two other missense variants, p.Ala256Thr and p.Val160Met, reported as rare SNPs and located in conserved residues, were predicted to produce protein 3D structure destabilization and impaired the MDH2 molecular function. ('molecular function', 'MPA', (204, 222)) ('p.Val160Met', 'Var', (49, 60)) ('impaired', 'NegReg', (186, 194)) ('MDH2', 'Gene', '4191', (199, 203)) ('protein', 'Protein', (145, 152)) ('MDH2', 'Gene', (199, 203)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (33, 44)) ('p.Val160Met', 'Mutation', 'rs138541865', (49, 60)) ('p.Ala256Thr', 'Var', (33, 44)) 39606 30008476 The p.Val160Met was detected in a 54-year-old PCC patient, whose tumor showed low RBP1 expression. ('patient', 'Species', '9606', (50, 57)) ('RBP1', 'Gene', '5947', (82, 86)) ('tumor', 'Disease', (65, 70)) ('low', 'NegReg', (78, 81)) ('PCC', 'Gene', '1421', (46, 49)) ('expression', 'MPA', (87, 97)) ('p.Val160Met', 'Mutation', 'rs138541865', (4, 15)) ('p.Val160Met', 'Var', (4, 15)) ('tumor', 'Disease', 'MESH:D009369', (65, 70)) ('RBP1', 'Gene', (82, 86)) ('PCC', 'Gene', (46, 49)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) 39609 30008476 The substitutions at residues Val160 and Ala256 could also affect the substrate binding affinity and protein 3D stability, and therefore, neither the enzymatic assay nor the immunofluorescence experiments are able to evaluate the effect. ('affect', 'Reg', (59, 65)) ('Ala256', 'Chemical', '-', (41, 47)) ('Val160', 'Var', (30, 36)) ('Ala256', 'Var', (41, 47)) ('substrate binding', 'Interaction', (70, 87)) ('protein', 'Protein', (101, 108)) ('Val160', 'Chemical', '-', (30, 36)) ('substitutions', 'Var', (4, 17)) 39610 30008476 Because of that, we conducted MD simulations only with these variants, which suggested that p.Val160Met could be modifying malate binding to the catalytic site, and consequently affecting MDH2 affinity for its substrate. ('MDH2', 'Gene', (188, 192)) ('affecting', 'Reg', (178, 187)) ('malate', 'MPA', (123, 129)) ('p.Val160Met', 'Mutation', 'rs138541865', (92, 103)) ('p.Val160Met', 'Var', (92, 103)) ('malate', 'Chemical', 'MESH:C030298', (123, 129)) ('modifying', 'Reg', (113, 122)) ('affinity', 'MPA', (193, 201)) ('binding', 'Interaction', (130, 137)) ('MDH2', 'Gene', '4191', (188, 192)) 39612 30008476 For variant p.Ala256Thr, MD simulations predicted that it could be affecting enzyme dimerization. ('p.Ala256Thr', 'Var', (12, 23)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (12, 23)) ('affecting', 'Reg', (67, 76)) ('enzyme dimerization', 'MPA', (77, 96)) 39614 30008476 A second somatic hit was not observed in the tumor of p.Val160Met-related patient and p.Ala256Thr-related tumor was not available. ('patient', 'Species', '9606', (74, 81)) ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('p.Val160Met', 'Mutation', 'rs138541865', (54, 65)) ('tumor', 'Disease', (45, 50)) ('tumor', 'Disease', 'MESH:D009369', (106, 111)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('p.Val160Met-related', 'Var', (54, 73)) ('tumor', 'Disease', 'MESH:D009369', (45, 50)) ('tumor', 'Disease', (106, 111)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (86, 97)) 39615 30008476 A dominant-negative effect for p.Val160Met and p.Ala256Thr variants might be the underlying mechanism as occurs with the p. Arg104Gly variant, although this has not been tested in this study. ('p.Ala256Thr', 'Var', (47, 58)) ('Arg104Gly', 'Var', (124, 133)) ('p.Ala256Thr', 'Mutation', 'rs147655350', (47, 58)) ('p.Val160Met', 'Mutation', 'rs138541865', (31, 42)) ('Arg104Gly', 'SUBSTITUTION', 'None', (124, 133)) ('p.Val160Met', 'Var', (31, 42)) 39617 30008476 Regarding the p.Val160Met variant, although most of our analyses suggested a potential pathogenic role as well, it was also classified as likely pathogenic due to the high number of alleles found (46/277206) in the general population. ('pathogenic', 'Reg', (145, 155)) ('pathogenic', 'Reg', (87, 97)) ('p.Val160Met', 'Mutation', 'rs138541865', (14, 25)) ('p.Val160Met', 'Var', (14, 25)) 39618 30008476 For the two other novel missense variants (p.Ser3Phe and p.Gln130Arg) identified, computational analyses did not reach a consensus. ('p.Ser3Phe', 'Var', (43, 52)) ('p.Gln130Arg', 'Mutation', 'p.Q130R', (57, 68)) ('p.Gln130Arg', 'Var', (57, 68)) ('p.Ser3Phe', 'Mutation', 'p.S3F', (43, 52)) 39619 30008476 In addition, patients carrying these variants had predominant adrenaline production or nonfunctional tumors, which is in discordance with MDH2-mutated patient and other Krebs cycle genes. ('Krebs', 'Chemical', '-', (169, 174)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) ('patient', 'Species', '9606', (13, 20)) ('patients', 'Species', '9606', (13, 21)) ('adrenaline', 'Chemical', 'MESH:D004837', (62, 72)) ('patient', 'Species', '9606', (151, 158)) ('MDH2', 'Gene', '4191', (138, 142)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('MDH2', 'Gene', (138, 142)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('variants', 'Var', (37, 45)) ('adrenaline', 'CPA', (62, 72)) ('tumors', 'Disease', (101, 107)) 39622 30008476 The p.Lys314del, identified in a patient with multiple noradrenergic PGLs, was classified as pathogenic, as it affects a conserved amino acid, and LOH and low RBP1 expression in the tumor sample were found. ('patient', 'Species', '9606', (33, 40)) ('tumor', 'Disease', (182, 187)) ('expression', 'MPA', (164, 174)) ('p.Lys314del', 'Var', (4, 15)) ('p.Lys314del', 'Mutation', 'p.314del', (4, 15)) ('RBP1', 'Gene', '5947', (159, 163)) ('conserved amino acid', 'MPA', (121, 141)) ('low', 'NegReg', (155, 158)) ('RBP1', 'Gene', (159, 163)) ('PGLs', 'Phenotype', 'HP:0002668', (69, 73)) ('tumor', 'Disease', 'MESH:D009369', (182, 187)) ('affects', 'Reg', (111, 118)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) 39623 30008476 Finally, a 57-year-old patient with a metastatic pheochromocytoma, clinical phenotype similar to the patient reported, was identified to carry the same variant affecting a donor splice-site (c.429+1G>A). ('pheochromocytoma', 'Disease', 'MESH:D010673', (49, 65)) ('c.429+1G>A', 'Var', (191, 201)) ('c.429+1G>A', 'Mutation', 'c.429+1G>A', (191, 201)) ('patient', 'Species', '9606', (101, 108)) ('pheochromocytoma', 'Disease', (49, 65)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (49, 65)) ('patient', 'Species', '9606', (23, 30)) 39624 30008476 In summary, taking into account only those MDH2 variants identified that display characteristics supportive of a pathogenicity potential, we provide more evidence that suggests the potential role of MDH2 in PPGL predisposition, and indicates that MDH2 germline PV could be responsible for 0.6% of PPGL cases, prevalence comparable with that reported for other recently described PPGL genes. ('PPGL', 'Chemical', '-', (207, 211)) ('MDH2', 'Gene', '4191', (247, 251)) ('MDH2', 'Gene', (43, 47)) ('MDH2', 'Gene', (247, 251)) ('PPGL', 'Chemical', '-', (379, 383)) ('MDH2', 'Gene', '4191', (199, 203)) ('MDH2', 'Gene', (199, 203)) ('PPGL', 'Chemical', '-', (297, 301)) ('responsible', 'Reg', (273, 284)) ('variants', 'Var', (48, 56)) ('PPGL', 'Disease', (207, 211)) ('PPGL', 'Disease', (297, 301)) ('MDH2', 'Gene', '4191', (43, 47)) 39628 30008476 On the other hand, it is worthy to note that MDH2 variants were found in metastatic cases, as two of five patients (three of six, if we include the reported MDH2 patient) developed metastases. ('metastases', 'Disease', 'MESH:D009362', (181, 191)) ('MDH2', 'Gene', '4191', (45, 49)) ('MDH2', 'Gene', '4191', (157, 161)) ('MDH2', 'Gene', (45, 49)) ('MDH2', 'Gene', (157, 161)) ('patient', 'Species', '9606', (106, 113)) ('patients', 'Species', '9606', (106, 114)) ('metastases', 'Disease', (181, 191)) ('found', 'Reg', (64, 69)) ('variants', 'Var', (50, 58)) ('patient', 'Species', '9606', (162, 169)) 39631 30008476 In this study, we were able to demonstrate a functional impact for two variants (p.Arg104Gly and p.Lys314del) and suggested an altered molecular function for other two (p.Val160Met and p.Ala256Thr), but there was insufficient evidence to consider them pathogenic even after applying up to five approaches to classify them. ('p.Ala256Thr', 'Mutation', 'rs147655350', (185, 196)) ('p.Arg104Gly', 'Mutation', 'rs1474905443', (81, 92)) ('p.Arg104Gly', 'Var', (81, 92)) ('p.Lys314del', 'Var', (97, 108)) ('p.Lys314del', 'Mutation', 'p.314del', (97, 108)) ('p.Ala256Thr', 'Var', (185, 196)) ('p.Val160Met', 'Mutation', 'rs138541865', (169, 180)) ('molecular function', 'MPA', (135, 153)) ('altered', 'Reg', (127, 134)) ('p.Val160Met', 'Var', (169, 180)) 39632 30008476 Although, it is likely that this rationale is unapproachable in the clinical setting when tumor tissue is unavailable, we demonstrated that MDH2 variants could be classified by a multidisciplinary approach. ('MDH2', 'Gene', '4191', (140, 144)) ('MDH2', 'Gene', (140, 144)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('tumor', 'Disease', (90, 95)) ('variants', 'Var', (145, 153)) ('tumor', 'Disease', 'MESH:D009369', (90, 95)) 39696 32569235 For genetic study, ectopic pheochromocytoma is currently associated with germline and/or somatic mutations in more than 20 genes. ('mutations', 'Var', (97, 106)) ('ectopic pheochromocytoma', 'Disease', (19, 43)) ('ectopic pheochromocytoma', 'Disease', 'MESH:D010673', (19, 43)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (27, 43)) ('associated', 'Reg', (57, 67)) 39697 32569235 These mutations are divided into three main clusters (Pseudohypoxic signaling cluster, Kinase signaling cluster and Wnt signaling cluster) based on the activation of a particular signaling pathway and each cluster is associated with unique clinical characteristics of patients with these tumors. ('activation', 'PosReg', (152, 162)) ('tumors', 'Phenotype', 'HP:0002664', (288, 294)) ('tumors', 'Disease', 'MESH:D009369', (288, 294)) ('tumor', 'Phenotype', 'HP:0002664', (288, 293)) ('signaling pathway', 'Pathway', (179, 196)) ('patients', 'Species', '9606', (268, 276)) ('mutations', 'Var', (6, 15)) ('tumors', 'Disease', (288, 294)) 39749 30694796 Here we focus on succinate dehydrogenase subunit B (SDHB) gene mutation carriers as these tumours carry a high risk of malignant transformation. ('SDHB', 'Gene', (52, 56)) ('succinate dehydrogenase subunit B', 'Gene', (17, 50)) ('tumour', 'Phenotype', 'HP:0002664', (90, 96)) ('mutation', 'Var', (63, 71)) ('tumours', 'Disease', 'MESH:D009369', (90, 97)) ('tumours', 'Phenotype', 'HP:0002664', (90, 97)) ('SDHB', 'Gene', '6390', (52, 56)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (17, 50)) ('tumours', 'Disease', (90, 97)) 39751 30694796 We undertook a retrospective analysis of longitudinal clinical data of all children and adolescents with SDHB mutations followed up in a single UK tertiary referral centre. ('children', 'Species', '9606', (75, 83)) ('SDHB', 'Gene', '6390', (105, 109)) ('mutations', 'Var', (110, 119)) ('SDHB', 'Gene', (105, 109)) 39752 30694796 We also conducted a literature review to inform a suggested surveillance protocol for children and adolescents harbouring SDHB mutations. ('mutations', 'Var', (127, 136)) ('SDHB', 'Gene', '6390', (122, 126)) ('SDHB', 'Gene', (122, 126)) ('children', 'Species', '9606', (86, 94)) 39757 30694796 Almost 40-50% of all phaeochromocytomas (PCC) and paragangliomas (PGL) (together known as PPGLs) are now thought to be associated with germline mutations, but within the paediatric population this figure is higher (70-80%). ('germline mutations', 'Var', (135, 153)) ('paragangliomas', 'Disease', 'MESH:D010235', (50, 64)) ('phaeochromocytomas', 'Disease', 'MESH:D010673', (21, 39)) ('phaeochromocytomas', 'Disease', (21, 39)) ('PGL', 'Phenotype', 'HP:0002668', (66, 69)) ('PGL', 'Phenotype', 'HP:0002668', (91, 94)) ('paragangliomas', 'Disease', (50, 64)) ('PPGLs', 'Chemical', '-', (90, 95)) ('paragangliomas', 'Phenotype', 'HP:0002668', (50, 64)) ('associated', 'Reg', (119, 129)) 39761 30694796 SDHB mutations are inherited in an autosomal dominant manner and have a lifetime penetrance of 30-40%. ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) 39762 30694796 Individuals carrying SDHB mutations command special attention as they contribute a high proportion of the PPGLs occurring in paediatric patients and have a high rate (up to 30%) of malignant transformation. ('PPGLs', 'Chemical', '-', (106, 111)) ('SDHB', 'Gene', '6390', (21, 25)) ('mutations', 'Var', (26, 35)) ('patients', 'Species', '9606', (136, 144)) ('PGL', 'Phenotype', 'HP:0002668', (107, 110)) ('SDHB', 'Gene', (21, 25)) ('PPGLs', 'Disease', (106, 111)) 39763 30694796 Approximately 72% of metastatic PPGLs in childhood are associated with SDHB mutations. ('mutations', 'Var', (76, 85)) ('PPGLs', 'Chemical', '-', (32, 37)) ('PGL', 'Phenotype', 'HP:0002668', (33, 36)) ('SDHB', 'Gene', '6390', (71, 75)) ('associated', 'Reg', (55, 65)) ('SDHB', 'Gene', (71, 75)) ('child', 'Species', '9606', (41, 46)) ('metastatic PPGLs', 'Disease', (21, 37)) 39764 30694796 This emphasises the importance of lifelong, regular surveillance for all children carrying SDHB mutations in an experienced centre as, although hard to prove, it is generally accepted that early detection and timely resection of SDHB-associated tumours will reduce the risk of metastatic disease. ('SDHB', 'Gene', '6390', (229, 233)) ('children', 'Species', '9606', (73, 81)) ('tumours', 'Phenotype', 'HP:0002664', (245, 252)) ('tumours', 'Disease', 'MESH:D009369', (245, 252)) ('metastatic disease', 'CPA', (277, 295)) ('SDHB', 'Gene', '6390', (91, 95)) ('SDHB', 'Gene', (229, 233)) ('tumours', 'Disease', (245, 252)) ('reduce', 'NegReg', (258, 264)) ('SDHB', 'Gene', (91, 95)) ('tumour', 'Phenotype', 'HP:0002664', (245, 251)) ('mutations', 'Var', (96, 105)) 39765 30694796 Despite widespread acceptance that individuals who carry SDHB mutations should undergo regular surveillance imaging, there is no clear consensus regarding the optimal modality or frequency. ('SDHB', 'Gene', '6390', (57, 61)) ('SDHB', 'Gene', (57, 61)) ('mutations', 'Var', (62, 71)) 39767 30694796 Since the discovery of SDHB mutations as a cause for PPGL syndromes, increasing numbers of genetically affected young family members are being identified and referred to specialist paediatric services. ('PGL', 'Phenotype', 'HP:0002668', (54, 57)) ('cause', 'Reg', (43, 48)) ('PPGL syndromes', 'Disease', (53, 67)) ('SDHB', 'Gene', '6390', (23, 27)) ('SDHB', 'Gene', (23, 27)) ('mutations', 'Var', (28, 37)) 39770 30694796 Based on these combined data, we propose a regular surveillance protocol for screening children with SDHB mutations. ('children', 'Species', '9606', (87, 95)) ('SDHB', 'Gene', '6390', (101, 105)) ('SDHB', 'Gene', (101, 105)) ('mutations', 'Var', (106, 115)) 39771 30694796 We undertook a retrospective review of paediatric SDHB mutation-positive index cases and asymptomatic carriers managed in our UK tertiary referral centre. ('SDHB', 'Gene', (50, 54)) ('mutation-positive', 'Var', (55, 72)) ('SDHB', 'Gene', '6390', (50, 54)) 39777 30694796 This included index cases that presented with symptomatic PPGL or individuals with relatives known to carry SDHB mutations. ('SDHB', 'Gene', (108, 112)) ('mutations', 'Var', (113, 122)) ('PPGL', 'Disease', (58, 62)) ('PGL', 'Phenotype', 'HP:0002668', (59, 62)) ('SDHB', 'Gene', '6390', (108, 112)) 39779 30694796 However, 20 children were diagnosed genetically between the ages of 5 and 18 years when their individual risk was established, following the identification of an SDHB gene mutation in a family member. ('mutation', 'Var', (172, 180)) ('children', 'Species', '9606', (12, 20)) ('SDHB', 'Gene', '6390', (162, 166)) ('SDHB', 'Gene', (162, 166)) 39782 30694796 The median time from diagnosis of the first PPGL to the confirmation of the SDHB mutation was 15 years (range 0-34 years) in the index cases. ('SDHB', 'Gene', '6390', (76, 80)) ('mutation', 'Var', (81, 89)) ('SDHB', 'Gene', (76, 80)) ('PGL', 'Phenotype', 'HP:0002668', (45, 48)) 39792 30694796 Data includes 175 patient years of follow-up initiated at either diagnosis (index cases) or the time of identification of SDHB mutation carrier status. ('mutation', 'Var', (127, 135)) ('SDHB', 'Gene', '6390', (122, 126)) ('patient', 'Species', '9606', (18, 25)) ('SDHB', 'Gene', (122, 126)) 39798 30694796 Thirty children were found to have SDHB mutations on cascade genetic testing (Table 2). ('mutations', 'Var', (40, 49)) ('children', 'Species', '9606', (7, 15)) ('SDHB', 'Gene', '6390', (35, 39)) ('SDHB', 'Gene', (35, 39)) 39805 30694796 The aim of the surveillance screening in SDHB mutation carriers is to detect and manage the clinical manifestations early, thereby reducing potentially serious complications and enhance cure rates. ('enhance', 'PosReg', (178, 185)) ('cure rates', 'CPA', (186, 196)) ('SDHB', 'Gene', (41, 45)) ('SDHB', 'Gene', '6390', (41, 45)) ('reducing', 'NegReg', (131, 139)) ('mutation', 'Var', (46, 54)) 39806 30694796 This is especially pertinent in young patients with SDHB mutations who have much higher reported rates of tumour metastasis. ('SDHB', 'Gene', (52, 56)) ('tumour metastasis', 'Disease', (106, 123)) ('tumour', 'Phenotype', 'HP:0002664', (106, 112)) ('patients', 'Species', '9606', (38, 46)) ('mutations', 'Var', (57, 66)) ('tumour metastasis', 'Disease', 'MESH:D009362', (106, 123)) ('SDHB', 'Gene', '6390', (52, 56)) 39807 30694796 The risk of a child with an SDHB mutation developing disease during childhood is very low, but if tumours arise they are potentially more aggressive than adult-onset lesions, although the reason for this is unknown. ('tumours', 'Phenotype', 'HP:0002664', (98, 105)) ('mutation', 'Var', (33, 41)) ('tumour', 'Phenotype', 'HP:0002664', (98, 104)) ('tumours', 'Disease', 'MESH:D009369', (98, 105)) ('tumours', 'Disease', (98, 105)) ('child', 'Species', '9606', (68, 73)) ('child', 'Species', '9606', (14, 19)) ('SDHB', 'Gene', '6390', (28, 32)) ('SDHB', 'Gene', (28, 32)) 39812 30694796 The mean age for developing PPGLs in patients with SDHB mutations is 29 years. ('PGL', 'Phenotype', 'HP:0002668', (29, 32)) ('mutations', 'Var', (56, 65)) ('patients', 'Species', '9606', (37, 45)) ('PPGLs', 'Chemical', '-', (28, 33)) ('SDHB', 'Gene', '6390', (51, 55)) ('SDHB', 'Gene', (51, 55)) 39818 30694796 Survival rates in children and young adults with SDHB mutations who develop tumours at 5, 10 and 20 years are 95.8, 95.8 and 71%, respectively. ('SDHB', 'Gene', (49, 53)) ('tumours', 'Disease', 'MESH:D009369', (76, 83)) ('children', 'Species', '9606', (18, 26)) ('mutations', 'Var', (54, 63)) ('tumours', 'Disease', (76, 83)) ('tumour', 'Phenotype', 'HP:0002664', (76, 82)) ('SDHB', 'Gene', '6390', (49, 53)) ('tumours', 'Phenotype', 'HP:0002664', (76, 83)) 39821 30694796 We reviewed the suggested published surveillance protocols for patients with SDHB mutations. ('SDHB', 'Gene', '6390', (77, 81)) ('mutations', 'Var', (82, 91)) ('SDHB', 'Gene', (77, 81)) ('patients', 'Species', '9606', (63, 71)) 39839 30694796 Based on our data and the available published literature, we suggest a comprehensive surveillance protocol for paediatric asymptomatic SDHB mutation carriers (Fig. ('SDHB', 'Gene', '6390', (135, 139)) ('mutation', 'Var', (140, 148)) ('SDHB', 'Gene', (135, 139)) 39852 30694796 The authors believe that all children that are identified as SDHB carriers should be entered into prospective surveillance programmes. ('carriers', 'Var', (66, 74)) ('children', 'Species', '9606', (29, 37)) ('SDHB', 'Gene', '6390', (61, 65)) ('SDHB', 'Gene', (61, 65)) 39856 30694796 The surveillance programme for SDHB mutation carriers should begin before the risk of tumour formation. ('SDHB', 'Gene', '6390', (31, 35)) ('SDHB', 'Gene', (31, 35)) ('tumour', 'Phenotype', 'HP:0002664', (86, 92)) ('tumour', 'Disease', 'MESH:D009369', (86, 92)) ('tumour', 'Disease', (86, 92)) ('mutation', 'Var', (36, 44)) 39870 29755524 Besides the three classical PHEO-associated cancer syndromes, namely, multiple endocrine neoplasia type 2 (MEN2), von Hippel-Lindau (VHL) disease, and neurofibromatosis type 1 (NF1), new entities have been associated with PHEO: the PGL syndrome types 1 to 5 [(PGL1-5) caused by mutations in succinate dehydrogenase (SDH) subunits D/AF2/C/B/A genes (SDHx), resp. ('multiple endocrine neoplasia type 2', 'Disease', (70, 105)) ('PGL1-5', 'Gene', (260, 266)) ('SDH', 'Gene', '6390', (349, 352)) ('von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (114, 145)) ('succinate dehydrogenase', 'Gene', '6390', (291, 314)) ('mutations', 'Var', (278, 287)) ('SDH', 'Gene', '6390', (316, 319)) ('PHEO', 'Phenotype', 'HP:0002666', (28, 32)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (151, 168)) ('neurofibromatosis type 1', 'Gene', '4763', (151, 175)) ('PGL1-5', 'Gene', '54949;6391;6390;6389', (260, 266)) ('PGL syndrome', 'Disease', 'MESH:D010235', (232, 244)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (70, 105)) ('neoplasia', 'Phenotype', 'HP:0002664', (89, 98)) ('SDH', 'Gene', (349, 352)) ('NF1', 'Gene', '4763', (177, 180)) ('SDH', 'Gene', (316, 319)) ('caused by', 'Reg', (268, 277)) ('cancer syndromes', 'Disease', (44, 60)) ('NF1', 'Gene', (177, 180)) ('succinate dehydrogenase', 'Gene', (291, 314)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (79, 98)) ('SDHx', 'Chemical', '-', (349, 353)) ('neurofibromatosis type 1', 'Gene', (151, 175)) ('PGL syndrome', 'Disease', (232, 244)) ('MEN', 'Species', '9606', (107, 110)) ('cancer syndromes', 'Disease', 'MESH:D009369', (44, 60)) ('PHEO', 'Phenotype', 'HP:0002666', (222, 226)) ('cancer', 'Phenotype', 'HP:0002664', (44, 50)) 39871 29755524 ], familial PHEO [caused by mutations in Myc-associated protein X (MAX) and transmembrane protein 127 (TMEM127) genes], and several new susceptibility genes. ('TMEM127', 'Gene', (103, 110)) ('TMEM127', 'Gene', '55654', (103, 110)) ('Myc', 'Gene', '4609', (41, 44)) ('familial PHEO', 'Disease', (3, 16)) ('Myc', 'Gene', (41, 44)) ('PHEO', 'Phenotype', 'HP:0002666', (12, 16)) ('caused by', 'Reg', (18, 27)) ('mutations', 'Var', (28, 37)) 39877 29755524 Furthermore, two other reasons should be taken into account while considering genetic testing: (1) the high rate of metastatic PHEO associated with some mutations, which may aid in tailoring the appropriate follow-up, and (2) the finding of a mutation in the index case and their relatives, which allows for an individualized surveillance program to timely detect and treat chromaffin and other nonchromaffin cell tumors or disorders. ('chromaffin', 'Chemical', '-', (374, 384)) ('rat', 'Species', '10116', (108, 111)) ('chromaffin cell tumors', 'Phenotype', 'HP:0002666', (398, 420)) ('chromaffin', 'Chemical', '-', (398, 408)) ('mutation', 'Var', (243, 251)) ('mutations', 'Var', (153, 162)) ('tumor', 'Phenotype', 'HP:0002664', (414, 419)) ('tumors or disorders', 'Disease', (414, 433)) ('chromaffin', 'Disease', (374, 384)) ('tumors', 'Phenotype', 'HP:0002664', (414, 420)) ('associated', 'Reg', (132, 142)) ('metastatic PHEO', 'Disease', (116, 131)) ('PHEO', 'Phenotype', 'HP:0002666', (127, 131)) ('tumors or disorders', 'Disease', 'MESH:D009369', (414, 433)) 39878 29755524 Additionally, when a genetic mutation is suspected to be linked to PHEO, other parameters may aid in the selection of the molecular analysis, namely, the type of catecholamine production and/or the pattern of SDHA/B immunostaining in pathology specimens and a specific imaging phenotype. ('SDHA', 'Gene', (209, 213)) ('mutation', 'Var', (29, 37)) ('aid', 'Reg', (94, 97)) ('catecholamine', 'Chemical', 'MESH:D002395', (162, 175)) ('SDHA', 'Gene', '6389', (209, 213)) ('PHEO', 'Phenotype', 'HP:0002666', (67, 71)) 39879 29755524 Here, we review the clinical phenotypes of pediatric patients with PHEO and associated mutations in susceptibility genes reported in the literature, in an attempt to contribute to a comprehensive genetic screening of PHEO in pediatric age. ('PHEO', 'Phenotype', 'HP:0002666', (217, 221)) ('patients', 'Species', '9606', (53, 61)) ('PHEO', 'Disease', (67, 71)) ('PHEO', 'Phenotype', 'HP:0002666', (67, 71)) ('rat', 'Species', '10116', (141, 144)) ('mutations', 'Var', (87, 96)) 39882 29755524 The susceptibility genes involved in the development of pediatric PHEO may be grouped according to three primary mechanisms of oncogenesis: a pseudohypoxic cluster [mutations in VHL, HIF2A (or EPAS1), PHD1, PHD2, FH, SDHx, and MDH2], a cluster composed of kinase receptor signaling and protein translation pathways (mutations in RET, NF1, and MAX), and a Wnt-altered pathway cluster. ('RET', 'Gene', (329, 332)) ('pseudohypoxic', 'Disease', (142, 155)) ('MDH2', 'Gene', (227, 231)) ('VHL', 'Gene', (178, 181)) ('SDHx', 'Gene', (217, 221)) ('mutations', 'Var', (165, 174)) ('EPAS1', 'Gene', (193, 198)) ('PHEO', 'Phenotype', 'HP:0002666', (66, 70)) ('SDHx', 'Chemical', '-', (217, 221)) ('RET', 'Gene', '5979', (329, 332)) ('VHL', 'Gene', '7428', (178, 181)) ('PHD1', 'Gene', (201, 205)) ('protein translation pathways', 'Pathway', (286, 314)) ('PHD2', 'Gene', (207, 211)) ('NF1', 'Gene', '4763', (334, 337)) ('HIF2A', 'Gene', (183, 188)) ('MDH2', 'Gene', '4191', (227, 231)) ('NF1', 'Gene', (334, 337)) ('EPAS1', 'Gene', '2034', (193, 198)) 39886 29755524 However, a long-standing process of hypoxia (or pseudohypoxia) causes HIF-alpha excess, which promotes a nuclear overexpression of these genes, ultimately leading to cancer development, migration, invasion, and metastasis. ('hypoxia', 'Disease', 'MESH:D000860', (36, 43)) ('pseudohypoxia', 'Disease', 'None', (48, 61)) ('cancer', 'Disease', 'MESH:D009369', (166, 172)) ('excess', 'Var', (80, 86)) ('rat', 'Species', '10116', (189, 192)) ('hypoxia', 'Disease', (54, 61)) ('cancer', 'Disease', (166, 172)) ('migration', 'CPA', (186, 195)) ('overexpression', 'PosReg', (113, 127)) ('metastasis', 'CPA', (211, 221)) ('cancer', 'Phenotype', 'HP:0002664', (166, 172)) ('leading to', 'Reg', (155, 165)) ('nuclear', 'MPA', (105, 112)) ('invasion', 'CPA', (197, 205)) ('hypoxia', 'Disease', 'MESH:D000860', (54, 61)) ('hypoxia', 'Disease', (36, 43)) ('long-standing', 'Phenotype', 'HP:0003698', (11, 24)) ('pseudohypoxia', 'Disease', (48, 61)) ('HIF-alpha', 'Protein', (70, 79)) 39888 29755524 Loss-of-function mutations in SDHx or FH lead to succinate and fumarate accumulation, respectively, and to a subsequent inhibition of HIF-alpha hydroxylation, a necessary signal recognition step for its degradation by the VHL protein. ('Loss-of-function', 'NegReg', (0, 16)) ('succinate', 'Chemical', 'MESH:D019802', (49, 58)) ('VHL', 'Gene', (222, 225)) ('SDHx', 'Gene', (30, 34)) ('fumarate', 'Chemical', 'MESH:D005650', (63, 71)) ('HIF-alpha hydroxylation', 'MPA', (134, 157)) ('SDHx', 'Chemical', '-', (30, 34)) ('VHL', 'Gene', '7428', (222, 225)) ('inhibition', 'NegReg', (120, 130)) ('mutations', 'Var', (17, 26)) ('fumarate accumulation', 'MPA', (63, 84)) ('succinate', 'MPA', (49, 58)) 39889 29755524 Mutations in HIF-alpha promote electrostatic changes in the protein isoforms, which impair hydroxylation by PHD molecules, preventing the signaling for degradation by the VHL protein. ('promote', 'Reg', (23, 30)) ('HIF-alpha', 'Gene', (13, 22)) ('VHL', 'Gene', (171, 174)) ('Mutations', 'Var', (0, 9)) ('electrostatic changes in the protein isoforms', 'MPA', (31, 76)) ('hydroxylation', 'MPA', (91, 104)) ('VHL', 'Gene', '7428', (171, 174)) ('signaling for degradation', 'MPA', (138, 163)) ('impair', 'NegReg', (84, 90)) ('preventing', 'NegReg', (123, 133)) 39890 29755524 Finally, VHL mutations originate defective proteins that do not recognize hydroxylated HIF-alpha isoforms for degradation. ('mutations', 'Var', (13, 22)) ('proteins', 'Protein', (43, 51)) ('VHL', 'Gene', '7428', (9, 12)) ('VHL', 'Gene', (9, 12)) 39893 29755524 Germline mutations in specific exons of the RET may lead to constitutive activation of its protein tyrosine kinase domain and subsequent downstream activation of Ras/mitogen-activated protein kinase and PI3 kinase/AKT pathways, promoting tumorigenesis through cell proliferation and reduced apoptosis. ('RET', 'Gene', (44, 47)) ('cell proliferation', 'CPA', (260, 278)) ('activation', 'PosReg', (73, 83)) ('tumor', 'Disease', 'MESH:D009369', (238, 243)) ('apoptosis', 'CPA', (291, 300)) ('activation', 'PosReg', (148, 158)) ('tumor', 'Phenotype', 'HP:0002664', (238, 243)) ('AKT', 'Gene', '207', (214, 217)) ('Germline', 'Var', (0, 8)) ('promoting', 'PosReg', (228, 237)) ('tumor', 'Disease', (238, 243)) ('reduced', 'NegReg', (283, 290)) ('RET', 'Gene', '5979', (44, 47)) ('AKT', 'Gene', (214, 217)) ('rat', 'Species', '10116', (272, 275)) ('protein tyrosine kinase domain', 'MPA', (91, 121)) 39896 29755524 Loss-of-function mutations in NF1 result in an enhanced cell proliferation through impaired Ras signaling inhibition. ('Loss-of-function', 'NegReg', (0, 16)) ('Ras signaling', 'Pathway', (92, 105)) ('enhanced', 'PosReg', (47, 55)) ('NF1', 'Gene', (30, 33)) ('NF1', 'Gene', '4763', (30, 33)) ('rat', 'Species', '10116', (68, 71)) ('cell proliferation', 'CPA', (56, 74)) ('inhibition', 'NegReg', (106, 116)) ('mutations', 'Var', (17, 26)) ('impaired', 'NegReg', (83, 91)) 39898 29755524 Loss-of-function mutations in MAX generate a protein incapable of binding to Myc in the nucleus, leading to proliferation, angiogenesis, and repression of cell differentiation. ('Loss-of-function', 'NegReg', (0, 16)) ('Myc', 'Gene', (77, 80)) ('rat', 'Species', '10116', (115, 118)) ('incapable', 'NegReg', (53, 62)) ('repression of cell differentiation', 'CPA', (141, 175)) ('angiogenesis', 'CPA', (123, 135)) ('proliferation', 'CPA', (108, 121)) ('MAX', 'Gene', (30, 33)) ('Myc', 'Gene', '4609', (77, 80)) ('rat', 'Species', '10116', (38, 41)) ('mutations', 'Var', (17, 26)) 39900 29755524 To our knowledge, 10 genes have been described in association with PHEO at a pediatric age: VHL (MIM *608537), rearranged during transfection (RET; MIM +164761), NF1 (MIM *613113), SDHD (MIM *602690), SDHB (MIM *185470), SDHA (MIM *600857), MAX (MIM *154950), HIF2A (MIM *603349), FH (MIM *136850), and PHD1 (MIM *606424). ('MIM *602690', 'Var', (187, 198)) ('MIM *136850', 'Var', (285, 296)) ('RET', 'Gene', '5979', (143, 146)) ('MIM *613113', 'Var', (167, 178)) ('MIM *185470', 'Var', (207, 218)) ('VHL', 'Gene', (92, 95)) ('SDHA', 'Gene', (221, 225)) ('SDHD', 'Gene', '6392', (181, 185)) ('PHEO', 'Phenotype', 'HP:0002666', (67, 71)) ('MIM *606424', 'Var', (309, 320)) ('SDHB', 'Gene', '6390', (201, 205)) ('SDHA', 'Gene', '6389', (221, 225)) ('NF1', 'Gene', '4763', (162, 165)) ('RET', 'Gene', (143, 146)) ('MIM *608537', 'Var', (97, 108)) ('SDHD', 'Gene', (181, 185)) ('VHL', 'Gene', '7428', (92, 95)) ('NF1', 'Gene', (162, 165)) ('SDHB', 'Gene', (201, 205)) ('MIM *154950', 'Var', (246, 257)) ('MIM *603349', 'Var', (267, 278)) ('MIM *600857', 'Var', (227, 238)) 39901 29755524 These genes are TMEM127 (MIM *613403), PHD2 (MIM *606425), SDHAF2 (MIM *613019), SDHC (MIM *602413), HRAS (MIM *190020), KIF1B (MIM *605995), and ATRX (MIM *300032). ('SDHC', 'Gene', (81, 85)) ('MIM *190020', 'Var', (107, 118)) ('MIM *602413', 'Var', (87, 98)) ('MIM *613019', 'Var', (67, 78)) ('SDHAF2', 'Gene', '54949', (59, 65)) ('TMEM127', 'Gene', (16, 23)) ('SDHAF2', 'Gene', (59, 65)) ('SDHC', 'Gene', '6391', (81, 85)) ('PHD2', 'Gene', (39, 43)) ('MIM *605995', 'Var', (128, 139)) ('TMEM127', 'Gene', '55654', (16, 23)) ('MIM *613403', 'Var', (25, 36)) ('MIM *606425', 'Var', (45, 56)) ('MIM *300032', 'Var', (152, 163)) 39902 29755524 A pediatric PHEO can be included in one of the following five cancer syndromes: VHL, MEN2, NF1, and those associated with PHD1/2 and HIF2A mutations. ('VHL', 'Gene', (80, 83)) ('MEN', 'Species', '9606', (85, 88)) ('NF1', 'Gene', (91, 94)) ('mutations', 'Var', (139, 148)) ('cancer syndromes', 'Disease', 'MESH:D009369', (62, 78)) ('VHL', 'Gene', '7428', (80, 83)) ('PHD1/2', 'Gene', '112398;54583', (122, 128)) ('HIF2A', 'Gene', (133, 138)) ('NF1', 'Gene', '4763', (91, 94)) ('cancer', 'Phenotype', 'HP:0002664', (62, 68)) ('cancer syndromes', 'Disease', (62, 78)) ('PHEO', 'Phenotype', 'HP:0002666', (12, 16)) ('PHD1/2', 'Gene', (122, 128)) ('MEN2', 'Disease', (85, 89)) 39906 29755524 Pediatric PHEO tends to present earlier when VHL is mutated, compared with other PHEO-associated germline mutations: The mean age of diagnosis of PHEO is 12 years, and the youngest age reported to date is 4 years. ('VHL', 'Gene', '7428', (45, 48)) ('mutated', 'Var', (52, 59)) ('PHEO', 'Phenotype', 'HP:0002666', (146, 150)) ('VHL', 'Gene', (45, 48)) ('PHEO', 'Phenotype', 'HP:0002666', (81, 85)) ('PHEO', 'Phenotype', 'HP:0002666', (10, 14)) 39907 29755524 Large deletions and truncating mutations of VHL predispose to hemangiomas of central nervous system (including retina) and RCC, but not to PHEO (VHL disease type 1). ('VHL', 'Gene', '7428', (145, 148)) ('hemangiomas', 'Phenotype', 'HP:0001028', (62, 73)) ('VHL disease', 'Disease', (145, 156)) ('VHL', 'Gene', (44, 47)) ('truncating mutations', 'Var', (20, 40)) ('PHEO', 'Phenotype', 'HP:0002666', (139, 143)) ('RCC', 'Disease', (123, 126)) ('VHL', 'Gene', '7428', (44, 47)) ('hemangiomas of central nervous system', 'Disease', (62, 99)) ('RCC', 'Disease', 'MESH:C538614', (123, 126)) ('VHL disease', 'Disease', 'MESH:D006623', (145, 156)) ('hemangiomas of central nervous system', 'Disease', 'MESH:D020786', (62, 99)) ('VHL', 'Gene', (145, 148)) ('Large deletions', 'Var', (0, 15)) ('predispose', 'Reg', (48, 58)) 39908 29755524 Missense mutations predispose to PHEO (VHL disease type 2), which may be associated with hemangioblastomas (VHL disease type 2A), hemangioblastomas and RCC (VHL disease type 2B), or only PHEO (VHL disease type 2C). ('VHL disease type 2', 'Disease', 'MESH:D006623', (157, 175)) ('PHEO', 'Phenotype', 'HP:0002666', (187, 191)) ('VHL disease type 2', 'Disease', 'MESH:D006623', (108, 126)) ('VHL disease type 2B', 'Disease', 'MESH:D006623', (157, 176)) ('associated', 'Reg', (73, 83)) ('VHL disease type 2', 'Disease', (39, 57)) ('hemangioblastomas', 'Disease', 'MESH:D018325', (89, 106)) ('predispose', 'Reg', (19, 29)) ('VHL disease type 2', 'Disease', 'MESH:D006623', (193, 211)) ('hemangioblastomas', 'Disease', (130, 147)) ('RCC', 'Disease', (152, 155)) ('PHEO', 'Disease', (33, 37)) ('VHL disease type 2B', 'Disease', (157, 176)) ('VHL disease type 2', 'Disease', (108, 126)) ('VHL disease type 2', 'Disease', 'MESH:D006623', (39, 57)) ('PHEO', 'Phenotype', 'HP:0002666', (33, 37)) ('hemangioblastomas', 'Disease', (89, 106)) ('RCC', 'Disease', 'MESH:C538614', (152, 155)) ('hemangioblastomas', 'Disease', 'MESH:D018325', (130, 147)) ('VHL disease type 2', 'Disease', (193, 211)) ('Missense mutations', 'Var', (0, 18)) 39909 29755524 VHL mutations are the most prevalent in pediatric patients with PHEO, ranging from 28.0% to 49.0% of cases. ('patients', 'Species', '9606', (50, 58)) ('PHEO', 'Disease', (64, 68)) ('VHL', 'Gene', (0, 3)) ('PHEO', 'Phenotype', 'HP:0002666', (64, 68)) ('mutations', 'Var', (4, 13)) ('VHL', 'Gene', '7428', (0, 3)) ('prevalent', 'Reg', (27, 36)) 39910 29755524 However, although syndromic features that raise suspicion for VHL disease have a high penetrance across the age spectrum, pediatric patients with PHEO-associated VHL mutations often present without other syndromic features of the disease. ('VHL', 'Gene', (162, 165)) ('syndromic', 'Disease', (18, 27)) ('syndromic features of the disease', 'Disease', 'MESH:D000013', (204, 237)) ('mutations', 'Var', (166, 175)) ('VHL', 'Gene', '7428', (162, 165)) ('syndromic features of the disease', 'Disease', (204, 237)) ('syndromic', 'Disease', 'MESH:D013577', (18, 27)) ('PHEO', 'Phenotype', 'HP:0002666', (146, 150)) ('syndromic', 'Disease', (204, 213)) ('VHL disease', 'Disease', 'MESH:D006623', (62, 73)) ('PHEO-associated', 'Disease', (146, 161)) ('VHL', 'Gene', (62, 65)) ('syndromic', 'Disease', 'MESH:D013577', (204, 213)) ('VHL', 'Gene', '7428', (62, 65)) ('patients', 'Species', '9606', (132, 140)) ('VHL disease', 'Disease', (62, 73)) 39912 29755524 Additionally, more than half of patients with VHL disease have de novo mutations; that is, the family history is unremarkable in these cases. ('mutations', 'Var', (71, 80)) ('VHL disease', 'Disease', (46, 57)) ('patients', 'Species', '9606', (32, 40)) ('VHL disease', 'Disease', 'MESH:D006623', (46, 57)) 39915 29755524 It may be subdivided into two clinical subtypes: MEN2A (MIM #171400) and MEN2B (MIM #162300). ('MEN2A', 'Gene', (49, 54)) ('MEN2A', 'Gene', '5979', (49, 54)) ('MEN2B', 'Gene', (73, 78)) ('MIM #162300', 'Var', (80, 91)) ('MEN2B', 'Gene', '5979', (73, 78)) ('MIM #171400', 'Var', (56, 67)) 39918 29755524 MEN2A patients with specific mutations in RET codons 631 and 634 have the highest incidence of PHEO. ('RET', 'Gene', '5979', (42, 45)) ('MEN2A', 'Gene', '5979', (0, 5)) ('MEN2A', 'Gene', (0, 5)) ('mutations', 'Var', (29, 38)) ('PHEO', 'Disease', (95, 99)) ('patients', 'Species', '9606', (6, 14)) ('RET', 'Gene', (42, 45)) ('PHEO', 'Phenotype', 'HP:0002666', (95, 99)) 39929 29755524 The syndrome of PHEO/PGL and somatostatinoma associated with polycythemia, caused by HIF2A mutations, is a new PHEO-associated cancer syndrome described initially in 2012. ('polycythemia', 'Phenotype', 'HP:0001901', (61, 73)) ('cancer', 'Phenotype', 'HP:0002664', (127, 133)) ('polycythemia', 'Disease', (61, 73)) ('PHEO', 'Phenotype', 'HP:0002666', (111, 115)) ('somatostatinoma', 'Disease', 'MESH:D013005', (29, 44)) ('associated', 'Reg', (45, 55)) ('somatostatinoma', 'Disease', (29, 44)) ('HIF2A', 'Gene', (85, 90)) ('syndrome of PHEO/PGL', 'Disease', (4, 24)) ('mutations', 'Var', (91, 100)) ('caused', 'Reg', (75, 81)) ('polycythemia', 'Disease', 'MESH:D011086', (61, 73)) ('PHEO', 'Phenotype', 'HP:0002666', (16, 20)) ('cancer syndrome', 'Disease', 'MESH:D009369', (127, 142)) ('cancer syndrome', 'Disease', (127, 142)) 39932 29755524 Overall clinical manifestations and their frequency in the 62 published cases with HIF2A mutations are as follows: isolated polycythemia in 29 patients (45.0%); polycythemia and PHEO/PGL in nine patients (14.5%); polycythemia, PHEO/PGL, and somatostatinoma in six patients (9.6%); isolated PHEO/PGL in 14 patients (22.6%); brain hemangiomas in three patients (4.8%, one with a concomitant PGL); and duodenal gangliocytic PGL in two patients (3.2%). ('brain hemangiomas', 'Disease', (323, 340)) ('polycythemia', 'Phenotype', 'HP:0001901', (161, 173)) ('polycythemia', 'Disease', (213, 225)) ('polycythemia', 'Disease', (124, 136)) ('mutations', 'Var', (89, 98)) ('PHEO', 'Phenotype', 'HP:0002666', (290, 294)) ('HIF2A', 'Gene', (83, 88)) ('polycythemia', 'Disease', 'MESH:D011086', (213, 225)) ('polycythemia', 'Disease', 'MESH:D011086', (124, 136)) ('PHEO', 'Phenotype', 'HP:0002666', (227, 231)) ('duodenal gangliocytic PGL', 'Disease', (399, 424)) ('patients', 'Species', '9606', (195, 203)) ('patients', 'Species', '9606', (432, 440)) ('somatostatinoma', 'Disease', 'MESH:D013005', (241, 256)) ('brain hemangiomas', 'Disease', 'MESH:D006391', (323, 340)) ('somatostatinoma', 'Disease', (241, 256)) ('PHEO', 'Phenotype', 'HP:0002666', (178, 182)) ('polycythemia', 'Disease', (161, 173)) ('patients', 'Species', '9606', (305, 313)) ('polycythemia', 'Phenotype', 'HP:0001901', (213, 225)) ('polycythemia', 'Disease', 'MESH:D011086', (161, 173)) ('patients', 'Species', '9606', (264, 272)) ('polycythemia', 'Phenotype', 'HP:0001901', (124, 136)) ('isolated PHEO/PGL', 'Disease', (281, 298)) ('patients', 'Species', '9606', (143, 151)) ('patients', 'Species', '9606', (350, 358)) ('hemangiomas', 'Phenotype', 'HP:0001028', (329, 340)) 39937 29755524 However, some patients have somatic mosaicism, where the mutation is found in tumor cells and in a fraction of normal tissues (e.g., leukocytes and buccal cells). ('mutation', 'Var', (57, 65)) ('tumor', 'Disease', 'MESH:D009369', (78, 83)) ('tumor', 'Phenotype', 'HP:0002664', (78, 83)) ('tumor', 'Disease', (78, 83)) ('patients', 'Species', '9606', (14, 22)) 39938 29755524 Thus, there may be a possibility of transmission of a HIF2A mutation to the next generation by an affected member who has mosaicism that includes the gametes; however, such cases have never been described until now. ('HIF2A', 'Gene', (54, 59)) ('mutation', 'Var', (60, 68)) ('rat', 'Species', '10116', (85, 88)) ('transmission', 'Reg', (36, 48)) 39939 29755524 Additionally, there are seven familial cases of HIF2A mutations, but the majority had only polycythemia, and two nonrelated cases of germline mutations in adult patients with isolated PHEO. ('polycythemia', 'Phenotype', 'HP:0001901', (91, 103)) ('polycythemia', 'Disease', 'MESH:D011086', (91, 103)) ('mutations', 'Var', (54, 63)) ('PHEO', 'Phenotype', 'HP:0002666', (184, 188)) ('patients', 'Species', '9606', (161, 169)) ('HIF2A', 'Gene', (48, 53)) ('polycythemia', 'Disease', (91, 103)) 39940 29755524 This evidence has led experts to develop recommendations regarding the genetic testing and counseling, as well as to the clinical follow-up of patients with HIF2A mutations. ('HIF2A', 'Gene', (157, 162)) ('mutations', 'Var', (163, 172)) ('patients', 'Species', '9606', (143, 151)) 39941 29755524 Germline mutations in PHD1/2 were reported in patients with polycythemia and PHEO/PGL. ('Germline mutations', 'Var', (0, 18)) ('patients', 'Species', '9606', (46, 54)) ('reported', 'Reg', (34, 42)) ('polycythemia', 'Phenotype', 'HP:0001901', (60, 72)) ('PHD1/2', 'Gene', '112398;54583', (22, 28)) ('polycythemia', 'Disease', 'MESH:D011086', (60, 72)) ('PHD1/2', 'Gene', (22, 28)) ('PHEO/PGL', 'Disease', (77, 85)) ('PHEO', 'Phenotype', 'HP:0002666', (77, 81)) ('polycythemia', 'Disease', (60, 72)) 39942 29755524 In this syndrome, patients develop polycythemia at a later age relative to HIF2A mutation carriers, but they appear to have a similar high risk of recurrent chromaffin cell tumors, especially PGL. ('chromaffin', 'Chemical', '-', (157, 167)) ('develop', 'PosReg', (27, 34)) ('mutation', 'Var', (81, 89)) ('HIF2A', 'Gene', (75, 80)) ('PGL', 'Disease', (192, 195)) ('polycythemia', 'Disease', (35, 47)) ('tumor', 'Phenotype', 'HP:0002664', (173, 178)) ('tumors', 'Disease', (173, 179)) ('tumors', 'Disease', 'MESH:D009369', (173, 179)) ('patients', 'Species', '9606', (18, 26)) ('tumors', 'Phenotype', 'HP:0002664', (173, 179)) ('polycythemia', 'Phenotype', 'HP:0001901', (35, 47)) ('polycythemia', 'Disease', 'MESH:D011086', (35, 47)) ('chromaffin cell tumors', 'Phenotype', 'HP:0002666', (157, 179)) 39944 29755524 Pediatric patients with PHEO and PGL usually have germline mutations in the SDHB, SDHD, or VHL. ('SDHB', 'Gene', '6390', (76, 80)) ('SDHB', 'Gene', (76, 80)) ('germline mutations', 'Var', (50, 68)) ('VHL', 'Gene', (91, 94)) ('SDHD', 'Gene', (82, 86)) ('VHL', 'Gene', '7428', (91, 94)) ('SDHD', 'Gene', '6392', (82, 86)) ('patients', 'Species', '9606', (10, 18)) ('PHEO', 'Phenotype', 'HP:0002666', (24, 28)) 39945 29755524 SDHB mutations cause PGL4 (MIM #115310), an autosomal dominant disorder characterized mainly by the development of sympathetic abdominal (67.0%) and thoracic PGL (17.6%), parasympathetic head and neck (HN) PGL (27.5%), and/or PHEO (11.4%). ('cause', 'Reg', (15, 20)) ('autosomal dominant disorder', 'Disease', 'MESH:D030342', (44, 71)) ('mutations', 'Var', (5, 14)) ('PHEO', 'Disease', (226, 230)) ('PGL4', 'Gene', '6390', (21, 25)) ('SDHB', 'Gene', '6390', (0, 4)) ('PGL4', 'Gene', (21, 25)) ('autosomal dominant disorder', 'Disease', (44, 71)) ('PHEO', 'Phenotype', 'HP:0002666', (226, 230)) ('SDHB', 'Gene', (0, 4)) 39946 29755524 Pediatric patients with PHEO harbor an SDHB mutation in 13.6% of cases, and the majority develop this tumor at >=8 yo. ('mutation', 'Var', (44, 52)) ('SDHB', 'Gene', '6390', (39, 43)) ('tumor', 'Disease', 'MESH:D009369', (102, 107)) ('SDHB', 'Gene', (39, 43)) ('PHEO', 'Disease', (24, 28)) ('patients', 'Species', '9606', (10, 18)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('tumor', 'Disease', (102, 107)) ('PHEO', 'Phenotype', 'HP:0002666', (24, 28)) 39947 29755524 PGL4 is associated with the highest incidence of PHEO (96.0%) of all the PGL syndromes in this age range; an SDHB mutation is most likely present when a pediatric PHEO occurs concomitantly with an abdominal PGL (68.0%) but is less likely than other SDHx mutations when it occurs in association with thoracic (8.0%) and HN PGL (4.0%). ('SDHx', 'Chemical', '-', (249, 253)) ('HN PGL', 'Disease', (319, 325)) ('PHEO', 'Phenotype', 'HP:0002666', (49, 53)) ('SDHB', 'Gene', '6390', (109, 113)) ('mutation', 'Var', (114, 122)) ('SDHB', 'Gene', (109, 113)) ('PGL syndrome', 'Disease', 'MESH:D010235', (73, 85)) ('PHEO', 'Phenotype', 'HP:0002666', (163, 167)) ('HN PGL', 'Disease', 'MESH:D010235', (319, 325)) ('PGL4', 'Gene', '6390', (0, 4)) ('PGL4', 'Gene', (0, 4)) ('PGL syndrome', 'Disease', (73, 85)) ('abdominal PGL', 'Disease', (197, 210)) 39948 29755524 SDHB mutations are also associated with the development of RCC (14%), gastrointestinal stromal tumors [GIST; 2%; isolated or associated with PGL (Carney dyad or Carney-Stratakis syndrome) or PGL and chondroma (Carney triad)] and pituitary adenomas (rare). ('PGL', 'Disease', (191, 194)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (229, 247)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('PGL', 'Disease', (141, 144)) ('SDHB', 'Gene', (0, 4)) ('RCC', 'Disease', (59, 62)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (229, 247)) ('pituitary adenomas', 'Disease', (229, 247)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (161, 186)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (70, 101)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (70, 101)) ('RCC', 'Disease', 'MESH:C538614', (59, 62)) ('chondroma', 'Disease', (199, 208)) ('mutations', 'Var', (5, 14)) ('associated with', 'Reg', (24, 39)) ('chondroma', 'Disease', 'MESH:D002812', (199, 208)) ('gastrointestinal stromal tumors', 'Disease', (70, 101)) ('SDHB', 'Gene', '6390', (0, 4)) ('Carney-Stratakis syndrome', 'Disease', (161, 186)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) 39949 29755524 Germline SDHD mutations predispose carriers to PGL1 (MIM #168000). ('predispose carriers', 'Reg', (24, 43)) ('SDHD', 'Gene', '6392', (9, 13)) ('SDHD', 'Gene', (9, 13)) ('PGL1', 'Gene', (47, 51)) ('mutations', 'Var', (14, 23)) 39951 29755524 Pediatric PHEO is associated with SDHD mutations in 6.7% of cases. ('Pediatric PHEO', 'Disease', (0, 14)) ('mutations', 'Var', (39, 48)) ('associated', 'Reg', (18, 28)) ('SDHD', 'Gene', '6392', (34, 38)) ('SDHD', 'Gene', (34, 38)) ('PHEO', 'Phenotype', 'HP:0002666', (10, 14)) 39953 29755524 Nonchromaffin cell tumors may also occur in patients with SDHD mutations (RCC, 8%; GIST rare, isolated, or part of Carney dyad/Carney-Stratakis syndrome/or triad; and pituitary adenomas, rare). ('Carney-Stratakis syndrome', 'Disease', (127, 152)) ('mutations', 'Var', (63, 72)) ('Nonchromaffin cell tumors', 'Disease', (0, 25)) ('patients', 'Species', '9606', (44, 52)) ('chromaffin cell tumors', 'Phenotype', 'HP:0002666', (3, 25)) ('occur', 'Reg', (35, 40)) ('RCC', 'Disease', (74, 77)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (127, 152)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (167, 185)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (167, 185)) ('RCC', 'Disease', 'MESH:C538614', (74, 77)) ('SDHD', 'Gene', '6392', (58, 62)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('Nonchromaffin cell tumors', 'Disease', 'MESH:D010236', (0, 25)) ('SDHD', 'Gene', (58, 62)) ('pituitary adenomas', 'Disease', (167, 185)) 39954 29755524 PGL1 almost always manifests when the SDHD mutation is paternally inherited, due to a selective somatic loss of the maternal chromosome 11. ('loss', 'NegReg', (104, 108)) ('mutation', 'Var', (43, 51)) ('manifests', 'Reg', (19, 28)) ('SDHD', 'Gene', (38, 42)) ('SDHD', 'Gene', '6392', (38, 42)) ('PGL1', 'Gene', (0, 4)) 39957 29755524 Very rarely, loss of the paternal 11q (where SDHD allele is located) and a mitotic recombination of the maternal 11q (carrying an SDHD mutation) with the paternal 11p15 imprinted oncosuppressor region may lead to the phenotypic expression of the disease, inherited from the mother. ('lead to', 'Reg', (205, 212)) ('SDHD', 'Gene', (130, 134)) ('SDHD', 'Gene', '6392', (130, 134)) ('loss', 'Var', (13, 17)) ('SDHD', 'Gene', '6392', (45, 49)) ('mitotic recombination', 'CPA', (75, 96)) ('SDHD', 'Gene', (45, 49)) ('mutation', 'Var', (135, 143)) 39959 29755524 Indeed, recent case series reveal that pediatric PHEO harboring VHL mutations can occur in association with abdominal (20.0%) and/or thoracic (3.0%) PGL, with a small study reporting this phenotype in 38.0% of cases. ('PHEO', 'Phenotype', 'HP:0002666', (49, 53)) ('VHL', 'Gene', (64, 67)) ('VHL', 'Gene', '7428', (64, 67)) ('abdominal', 'Disease', (108, 117)) ('mutations', 'Var', (68, 77)) 39960 29755524 Additionally, pediatric patients with PHEO-associated VHL mutations have a significantly higher likelihood of new contralateral adrenal and extraadrenal tumors than have mutations in other genes. ('mutations', 'Var', (58, 67)) ('PHEO', 'Phenotype', 'HP:0002666', (38, 42)) ('adrenal and extraadrenal tumors', 'Phenotype', 'HP:0100631', (128, 159)) ('PHEO-associated', 'Disease', (38, 53)) ('VHL', 'Gene', (54, 57)) ('VHL', 'Gene', '7428', (54, 57)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('extraadrenal tumors', 'Disease', (140, 159)) ('tumors', 'Phenotype', 'HP:0002664', (153, 159)) ('patients', 'Species', '9606', (24, 32)) ('extraadrenal tumors', 'Disease', 'MESH:C565335', (140, 159)) 39961 29755524 The youngest age reported to date is 8 years, and although the age of diagnosis of PGL is younger than that of PHEO, PGL may occur simultaneously (33.3%) or develop after PHEO (33.3%) in patients with HIF2A mutations. ('patients', 'Species', '9606', (187, 195)) ('PHEO', 'Phenotype', 'HP:0002666', (111, 115)) ('HIF2A', 'Gene', (201, 206)) ('mutations', 'Var', (207, 216)) ('PHEO', 'Phenotype', 'HP:0002666', (171, 175)) 39964 29755524 As previously stated, PHD1 mutations may cause a phenotype (pediatric penetrance, multifocal, and recurrent PGL) similar to that of HIF2A mutations, as proteins coded by both genes are partners in the PHD/HIF-alpha/VHL pathway. ('mutations', 'Var', (27, 36)) ('VHL', 'Gene', (215, 218)) ('VHL', 'Gene', '7428', (215, 218)) ('PHD1', 'Gene', (22, 26)) ('cause', 'Reg', (41, 46)) 39965 29755524 Patients with PHD1/PHD2/HIF2A mutations should be closely followed up with functional imaging techniques for recurrence, with 18F-fluorodihydroxyphenylalanine (18F-FDOPA) position emission tomography (PET)/computed tomography (CT) being the most accurate among all the available techniques. ('18F-fluorodihydroxyphenylalanine', 'Chemical', 'MESH:C043437', (126, 158)) ('rat', 'Species', '10116', (250, 253)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (160, 169)) ('Patients', 'Species', '9606', (0, 8)) ('mutations', 'Var', (30, 39)) ('PHD1/PHD2/HIF2A', 'Gene', (14, 29)) 39967 29755524 FH mutations are among the rare genetic etiologies of PHEO, with an estimated prevalence of 1.05% in two cohorts of PHEO/PGL patients (totalizing 670 cases). ('PHEO', 'Disease', (54, 58)) ('PHEO', 'Phenotype', 'HP:0002666', (54, 58)) ('PHEO', 'Phenotype', 'HP:0002666', (116, 120)) ('mutations', 'Var', (3, 12)) ('patients', 'Species', '9606', (125, 133)) 39969 29755524 FH mutations have shown to predispose patients to PHEO and multifocal PGL (mainly abdominal) with a significantly higher rate than mutations in other PHEO susceptibility genes. ('PHEO', 'Disease', (50, 54)) ('predispose', 'Reg', (27, 37)) ('PHEO', 'Phenotype', 'HP:0002666', (50, 54)) ('patients', 'Species', '9606', (38, 46)) ('PHEO', 'Phenotype', 'HP:0002666', (150, 154)) ('mutations', 'Var', (3, 12)) ('multifocal PGL', 'Disease', (59, 73)) ('rat', 'Species', '10116', (121, 124)) 39970 29755524 The familial PHEO syndrome caused by MAX mutations has a prevalence of <2.0% among the genetic etiologies of PHEO. ('mutations', 'Var', (41, 50)) ('caused', 'Reg', (27, 33)) ('familial PHEO syndrome', 'Disease', (4, 26)) ('PHEO', 'Phenotype', 'HP:0002666', (109, 113)) ('familial PHEO syndrome', 'Disease', 'MESH:D009386', (4, 26)) ('MAX', 'Gene', (37, 40)) ('PHEO', 'Phenotype', 'HP:0002666', (13, 17)) 39972 29755524 MAX mutations may predispose patients with PHEO to thoracic and abdominal PGL (18.5%), including at a pediatric age (14.3%). ('patients', 'Species', '9606', (29, 37)) ('MAX', 'Gene', (0, 3)) ('PHEO', 'Phenotype', 'HP:0002666', (43, 47)) ('predispose', 'Reg', (18, 28)) ('PHEO', 'Disease', (43, 47)) ('mutations', 'Var', (4, 13)) 39978 29755524 The high frequency of high risk RET mutations [in particular, the NM_020975.4(RET):c.1900T>C (p.Cys634Arg)] for bPHEO in published cohorts could be an explanation, although sample bias (small sample sizes) should also be considered. ('4(RET):c.1900T>C', 'Var', (76, 92)) ('RET', 'Gene', (78, 81)) ('RET', 'Gene', '5979', (32, 35)) ('bPHEO', 'Disease', (112, 117)) ('PHEO', 'Phenotype', 'HP:0002666', (113, 117)) ('4(RET):c.1900T>C', 'SUBSTITUTION', 'None', (76, 92)) ('p.Cys634Arg', 'Mutation', 'rs75076352', (94, 105)) ('RET', 'Gene', '5979', (78, 81)) ('RET', 'Gene', (32, 35)) 39979 29755524 However, pediatric patients with bPHEO may harbor an SDHD mutation in 6.9-12.5% of cases, and its presence might thus be considered in these cases. ('PHEO', 'Phenotype', 'HP:0002666', (34, 38)) ('patients', 'Species', '9606', (19, 27)) ('bPHEO', 'Disease', (33, 38)) ('SDHD', 'Gene', '6392', (53, 57)) ('SDHD', 'Gene', (53, 57)) ('mutation', 'Var', (58, 66)) 39980 29755524 MAX mutations predispose carriers to a high risk of bPHEO or multifocal synchronous unilateral tumors (68.4%), including at a pediatric age (41.0%). ('bPHEO', 'Disease', (52, 57)) ('MAX', 'Gene', (0, 3)) ('predispose', 'Reg', (14, 24)) ('multifocal synchronous unilateral tumors', 'Disease', 'None', (61, 101)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) ('PHEO', 'Phenotype', 'HP:0002666', (53, 57)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('mutations', 'Var', (4, 13)) ('multifocal synchronous unilateral tumors', 'Disease', (61, 101)) 39986 29755524 At a pediatric age, metastatic PHEO occurs in the context of SDHB mutations in 57.0% of cases. ('mutations', 'Var', (66, 75)) ('PHEO', 'Phenotype', 'HP:0002666', (31, 35)) ('SDHB', 'Gene', '6390', (61, 65)) ('SDHB', 'Gene', (61, 65)) ('metastatic PHEO', 'Disease', (20, 35)) 39987 29755524 Additionally, considering the largest case series of pediatric PHEO, the metastatic rate of PHEO and/or PGL associated with SDHB mutations (18.2-26.0%) was significantly higher when compared with that of carriers of mutations in other susceptibility genes; a lower lifetime expectancy of carriers of SHDB mutations was also recognized. ('SDHB', 'Gene', (124, 128)) ('higher', 'PosReg', (170, 176)) ('PHEO', 'Phenotype', 'HP:0002666', (63, 67)) ('mutations', 'Var', (129, 138)) ('rat', 'Species', '10116', (84, 87)) ('metastatic rate', 'CPA', (73, 88)) ('PHEO', 'Phenotype', 'HP:0002666', (92, 96)) ('SDHB', 'Gene', '6390', (124, 128)) 39989 29755524 When comparing all the available functional imaging techniques for this purpose, the most accurate for patients with SDHx mutations is [68Ga]-DOTA(0)-Tyr(3)-octreotate ([68Ga]-DOTATATE) PET/CT, followed by [18F]-fluoro-2-deoxy-d-glucose PET/CT. (']-DOTATATE', 'Chemical', '-', (174, 184)) ('DOTA(0)-Tyr(3)-octreotate', 'Chemical', '-', (142, 167)) ('rat', 'Species', '10116', (94, 97)) ('mutations', 'Var', (122, 131)) ('SDHx', 'Chemical', '-', (117, 121)) ('patients', 'Species', '9606', (103, 111)) ('SDHx', 'Gene', (117, 121)) ('fluoro-2-deoxy-d-glucose', 'Chemical', '-', (212, 236)) 39993 29755524 While the metastatic risk does not appear to be high, it may be worth to consider the analysis of VHL in a pediatric patient with a metastatic PHEO, due to the high prevalence of VHL mutations at this age range. ('PHEO', 'Phenotype', 'HP:0002666', (143, 147)) ('mutations', 'Var', (183, 192)) ('VHL', 'Gene', (98, 101)) ('VHL', 'Gene', '7428', (98, 101)) ('VHL', 'Gene', (179, 182)) ('patient', 'Species', '9606', (117, 124)) ('VHL', 'Gene', '7428', (179, 182)) 39997 29755524 The familial PHEO syndrome caused by MAX mutations is associated with metastatic PHEO in 10.5% of cases, considering all ages. ('mutations', 'Var', (41, 50)) ('metastatic PHEO', 'Disease', (70, 85)) ('caused', 'Reg', (27, 33)) ('familial PHEO syndrome', 'Disease', (4, 26)) ('familial PHEO syndrome', 'Disease', 'MESH:D009386', (4, 26)) ('MAX', 'Gene', (37, 40)) ('PHEO', 'Phenotype', 'HP:0002666', (13, 17)) ('PHEO', 'Phenotype', 'HP:0002666', (81, 85)) ('associated', 'Reg', (54, 64)) 39999 29755524 However, in a study of patients with PHEO-associated MAX mutations, five patients were <=18 yo, of which one had a metastatic tumor. ('patients', 'Species', '9606', (23, 31)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('tumor', 'Disease', 'MESH:D009369', (126, 131)) ('mutations', 'Var', (57, 66)) ('MAX', 'Gene', (53, 56)) ('PHEO', 'Phenotype', 'HP:0002666', (37, 41)) ('patients', 'Species', '9606', (73, 81)) ('tumor', 'Disease', (126, 131)) 40000 29755524 PGL5 (MIM #614165) is caused by mutations in the subunit A of the SDH complex, which are found in 3.0% of all PHEO/PGL patients. ('SDH', 'Gene', '6390', (66, 69)) ('PHEO', 'Phenotype', 'HP:0002666', (110, 114)) ('PHEO/PGL', 'Disease', (110, 118)) ('patients', 'Species', '9606', (119, 127)) ('PGL5', 'Gene', '6389', (0, 4)) ('SDH', 'Gene', (66, 69)) ('PGL5', 'Gene', (0, 4)) ('caused by', 'Reg', (22, 31)) ('mutations', 'Var', (32, 41)) ('found', 'Reg', (89, 94)) 40001 29755524 SDHA mutations predispose patients to HN PGL (38.9%), abdominal PGL (27.8%), and unilateral PHEO (24.0%). ('HN PGL', 'Disease', (38, 44)) ('unilateral PHEO', 'Disease', (81, 96)) ('SDHA', 'Gene', (0, 4)) ('predispose', 'Reg', (15, 25)) ('mutations', 'Var', (5, 14)) ('patients', 'Species', '9606', (26, 34)) ('HN PGL', 'Disease', 'MESH:D010235', (38, 44)) ('SDHA', 'Gene', '6389', (0, 4)) ('abdominal PGL', 'Disease', (54, 67)) ('PHEO', 'Phenotype', 'HP:0002666', (92, 96)) 40002 29755524 SDHA mutations also confer susceptibility to GIST (30% of SDHx deficient GIST) and pituitary adenomas (rare). ('GIST', 'Disease', (45, 49)) ('SDHA', 'Gene', (0, 4)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (83, 101)) ('pituitary adenomas', 'Disease', (83, 101)) ('mutations', 'Var', (5, 14)) ('susceptibility', 'Reg', (27, 41)) ('SDHA', 'Gene', '6389', (0, 4)) ('SDHx deficient GIST', 'Disease', 'MESH:D046152', (58, 77)) ('SDHx deficient GIST', 'Disease', (58, 77)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (83, 101)) 40004 29755524 In the largest case series (totalizing 38 patients) of PHEO/PGL-associated SDHA mutations, the reported prevalence of metastatic PHEO/PGL in general was 11%. ('SDHA', 'Gene', (75, 79)) ('mutations', 'Var', (80, 89)) ('PHEO', 'Phenotype', 'HP:0002666', (55, 59)) ('PHEO', 'Phenotype', 'HP:0002666', (129, 133)) ('SDHA', 'Gene', '6389', (75, 79)) ('patients', 'Species', '9606', (42, 50)) 40005 29755524 FH mutations are associated with a high rate of metastatic PHEO. ('metastatic PHEO', 'Disease', (48, 63)) ('PHEO', 'Phenotype', 'HP:0002666', (59, 63)) ('mutations', 'Var', (3, 12)) ('rat', 'Species', '10116', (40, 43)) 40006 29755524 In the largest collaborative cohort study of PHEO/PGL where the main susceptibility genes were analyzed, PHEO/PGL caused by FH mutations had a significantly higher rate of malignancy than had tumors associated with other gene mutations. ('malignancy', 'Disease', 'MESH:D009369', (172, 182)) ('malignancy', 'Disease', (172, 182)) ('tumors', 'Disease', (192, 198)) ('rat', 'Species', '10116', (22, 25)) ('tumors', 'Disease', 'MESH:D009369', (192, 198)) ('tumors', 'Phenotype', 'HP:0002664', (192, 198)) ('caused', 'Reg', (114, 120)) ('PHEO/PGL', 'Disease', (105, 113)) ('higher', 'PosReg', (157, 163)) ('PHEO', 'Phenotype', 'HP:0002666', (105, 109)) ('rat', 'Species', '10116', (164, 167)) ('mutations', 'Var', (127, 136)) ('tumor', 'Phenotype', 'HP:0002664', (192, 197)) ('PHEO', 'Phenotype', 'HP:0002666', (45, 49)) 40007 29755524 Thus, similar to NF1 and MAX mutations, where small samples have been shown a propensity for malignant PHEO, it may be important to maintain a higher index of suspicion for the presence of malignancy when following up pediatric patients with PHEO-associated SDHA and FH mutations. ('malignancy', 'Disease', 'MESH:D009369', (189, 199)) ('PHEO', 'Phenotype', 'HP:0002666', (103, 107)) ('SDHA', 'Gene', (258, 262)) ('patients', 'Species', '9606', (228, 236)) ('mutations', 'Var', (270, 279)) ('malignancy', 'Disease', (189, 199)) ('NF1', 'Gene', (17, 20)) ('PHEO', 'Phenotype', 'HP:0002666', (242, 246)) ('NF1', 'Gene', '4763', (17, 20)) ('PHEO-associated', 'Disease', (242, 257)) ('SDHA', 'Gene', '6389', (258, 262)) 40010 29755524 Considering 84 patients with a solitary and apparently nonsyndromic PHEO (the largest case series at a pediatric age), mutations in VHL, SDHB, and SDHD were found in 62, 8, and 3 cases, respectively. ('VHL', 'Gene', (132, 135)) ('patients', 'Species', '9606', (15, 23)) ('syndromic', 'Disease', (58, 67)) ('VHL', 'Gene', '7428', (132, 135)) ('PHEO', 'Phenotype', 'HP:0002666', (68, 72)) ('syndromic', 'Disease', 'MESH:D013577', (58, 67)) ('SDHB', 'Gene', '6390', (137, 141)) ('SDHB', 'Gene', (137, 141)) ('found', 'Reg', (157, 162)) ('SDHD', 'Gene', '6392', (147, 151)) ('SDHD', 'Gene', (147, 151)) ('mutations', 'Var', (119, 128)) 40014 29755524 Similar to VHL disease, tumors associated with SDHx, HIF2A, and FH mutations produce and/or secrete noradrenaline/normetanephrine but rarely adrenaline/metanephrine. ('tumor', 'Phenotype', 'HP:0002664', (24, 29)) ('VHL disease', 'Disease', (11, 22)) ('tumors', 'Disease', (24, 30)) ('tumors', 'Disease', 'MESH:D009369', (24, 30)) ('adrenaline', 'Chemical', 'MESH:D004837', (103, 113)) ('metanephrine', 'Chemical', 'MESH:D008676', (117, 129)) ('SDHx', 'Chemical', '-', (47, 51)) ('tumors', 'Phenotype', 'HP:0002664', (24, 30)) ('mutations', 'Var', (67, 76)) ('VHL disease', 'Disease', 'MESH:D006623', (11, 22)) ('metanephrine', 'Chemical', 'MESH:D008676', (152, 164)) ('secrete noradrenaline/normetanephrine', 'MPA', (92, 129)) ('adrenaline', 'Chemical', 'MESH:D004837', (141, 151)) 40015 29755524 However, PHEO associated with SDHx mutations also produce and/or secrete dopamine/methoxytyramine, which is rarely detected in VHL disease. ('PHEO', 'Disease', (9, 13)) ('secrete dopamine/methoxytyramine', 'MPA', (65, 97)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (82, 97)) ('VHL disease', 'Disease', 'MESH:D006623', (127, 138)) ('dopamine', 'Chemical', 'MESH:D004298', (73, 81)) ('SDHx', 'Gene', (30, 34)) ('SDHx', 'Chemical', '-', (30, 34)) ('PHEO', 'Phenotype', 'HP:0002666', (9, 13)) ('VHL disease', 'Disease', (127, 138)) ('mutations', 'Var', (35, 44)) 40020 29755524 Lack of staining for SDHB in PHEO is highly suggestive of germline mutations in SDHx genes (90.0%), whereas immunonegative staining for SDHA (75.0%) is indicative of SDHA mutations. ('SDHA', 'Gene', '6389', (166, 170)) ('SDHA', 'Gene', (136, 140)) ('mutations', 'Var', (67, 76)) ('SDHB', 'Gene', '6390', (21, 25)) ('SDHA', 'Gene', (166, 170)) ('PHEO', 'Phenotype', 'HP:0002666', (29, 33)) ('SDHA', 'Gene', '6389', (136, 140)) ('SDHB', 'Gene', (21, 25)) ('SDHx', 'Chemical', '-', (80, 84)) ('SDHx', 'Gene', (80, 84)) 40021 29755524 False negatives (positive or weakly positive staining) may occur in SDHD-related lesions for SDHB staining, and SDHD immunohistochemistry may aid in these cases (positive staining predicts SDHx mutations). ('SDHB', 'Gene', (93, 97)) ('SDHD', 'Gene', '6392', (68, 72)) ('mutations', 'Var', (194, 203)) ('SDHD', 'Gene', (112, 116)) ('SDHD', 'Gene', (68, 72)) ('SDHD', 'Gene', '6392', (112, 116)) ('SDHx', 'Gene', (189, 193)) ('SDHx', 'Chemical', '-', (189, 193)) ('SDHB', 'Gene', '6390', (93, 97)) 40025 29755524 These missed lesions on 18F-FDOPA PET/CT are often associated with SDHB and SDHD mutations, and it is worth to consider focused genetic screening for SDHx mutations in 18F-FDOPA PET/CT-negative PHEO/PGL. ('18F-FDOPA', 'Chemical', 'MESH:C043437', (168, 177)) ('SDHD', 'Gene', (76, 80)) ('SDHD', 'Gene', '6392', (76, 80)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (24, 33)) ('SDHB', 'Gene', '6390', (67, 71)) ('SDHx', 'Gene', (150, 154)) ('associated', 'Reg', (51, 61)) ('SDHB', 'Gene', (67, 71)) ('SDHx', 'Chemical', '-', (150, 154)) ('PHEO', 'Phenotype', 'HP:0002666', (194, 198)) ('mutations', 'Var', (81, 90)) 40029 29755524 Genetic testing is of paramount importance in pediatric patients with an apparently sporadic PHEO, because (1) the rate of mutations found in this clinical setting is close to 80.0%; (2) 10 PHEO-associated genes have been reported in pediatric patients, each gene conferring distinct profiles of propensity for the development of chromaffin and nonchromaffin cell tumors and for biological behaviors; and (3) it allows for tailoring specific diagnostic, treatment, and surveillance programs to these patients, taking into account the germline mutation founded and its genotype-phenotype correlation. ('patients', 'Species', '9606', (56, 64)) ('rat', 'Species', '10116', (115, 118)) ('tumors', 'Disease', 'MESH:D009369', (364, 370)) ('tumors', 'Disease', (364, 370)) ('chromaffin', 'Chemical', '-', (330, 340)) ('patients', 'Species', '9606', (500, 508)) ('PHEO', 'Phenotype', 'HP:0002666', (93, 97)) ('tumors', 'Phenotype', 'HP:0002664', (364, 370)) ('PHEO', 'Phenotype', 'HP:0002666', (190, 194)) ('chromaffin', 'Chemical', '-', (348, 358)) ('chromaffin and nonchromaffin cell tumors', 'Phenotype', 'HP:0002666', (330, 370)) ('patients', 'Species', '9606', (244, 252)) ('chromaffin cell tumors', 'Phenotype', 'HP:0002666', (348, 370)) ('tumor', 'Phenotype', 'HP:0002664', (364, 369)) ('mutations', 'Var', (123, 132)) 40031 29755524 VHL, SDHB, and SDHD are the most frequently mutated, whereas other genes are rarely found in pediatric patients. ('SDHB', 'Gene', '6390', (5, 9)) ('SDHD', 'Gene', (15, 19)) ('SDHD', 'Gene', '6392', (15, 19)) ('SDHB', 'Gene', (5, 9)) ('mutated', 'Var', (44, 51)) ('VHL', 'Gene', (0, 3)) ('VHL', 'Gene', '7428', (0, 3)) ('patients', 'Species', '9606', (103, 111)) 40032 29755524 The high rate of malignancy with SDHB mutations demands extensive initial diagnostic surveys and a close surveillance program. ('rat', 'Species', '10116', (9, 12)) ('SDHB', 'Gene', '6390', (33, 37)) ('malignancy', 'Disease', (17, 27)) ('SDHB', 'Gene', (33, 37)) ('mutations', 'Var', (38, 47)) ('malignancy', 'Disease', 'MESH:D009369', (17, 27)) 40033 29755524 Similarly, the greater likelihood of recurrent tumors in pediatric patients with VHL and SDHD mutations needs a proactive long-term follow-up. ('tumors', 'Disease', (47, 53)) ('tumors', 'Disease', 'MESH:D009369', (47, 53)) ('patients', 'Species', '9606', (67, 75)) ('VHL', 'Gene', (81, 84)) ('mutations', 'Var', (94, 103)) ('VHL', 'Gene', '7428', (81, 84)) ('SDHD', 'Gene', '6392', (89, 93)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('SDHD', 'Gene', (89, 93)) ('tumors', 'Phenotype', 'HP:0002664', (47, 53)) 40034 29755524 Also, pediatric carriers of PHEO-associated mutations may differ in the clinical phenotype when compared to adult carriers (e.g., the higher rate of bPHEO and PGL in pediatric VHL disease), findings that may change the clinical attitude regarding the extent of diagnostic and follow-up strategies. ('differ', 'Reg', (58, 64)) ('PHEO', 'Phenotype', 'HP:0002666', (28, 32)) ('bPHEO', 'Disease', (149, 154)) ('rat', 'Species', '10116', (288, 291)) ('mutations', 'Var', (44, 53)) ('pediatric VHL disease', 'Disease', 'MESH:D006623', (166, 187)) ('PHEO', 'Phenotype', 'HP:0002666', (150, 154)) ('change', 'Reg', (208, 214)) ('rat', 'Species', '10116', (141, 144)) ('PGL', 'Disease', (159, 162)) ('pediatric VHL disease', 'Disease', (166, 187)) 40035 29755524 Due to the rarity of PHEO-associated mutations in other susceptibility genes, data retrieved from the published literature may hinder the establishment of genotype-phenotype correlations for some of these genes. ('hinder', 'NegReg', (127, 133)) ('PHEO-associated', 'Disease', (21, 36)) ('mutations', 'Var', (37, 46)) ('rat', 'Species', '10116', (116, 119)) ('PHEO', 'Phenotype', 'HP:0002666', (21, 25)) 40036 29755524 Nevertheless, new mutations have been described at a pediatric age that correlate with specific phenotypes (e.g., HIF2A mutations and "Pacak-Zhuang" syndrome), opening new options for sequential genetic testing approach and for individualized strategies regarding diagnosis, treatment, long-term follow-up, and genetic counseling. ('HIF2A', 'Gene', (114, 119)) ('rat', 'Species', '10116', (245, 248)) ('mutations', 'Var', (120, 129)) 40066 26559265 Routine noncontrast CT can be used as a screening tool for pheochromocytoma by combining 3 imaging phenotypes: size <=3 cm, unenhanced attenuation values <=10 HU, and absence of suspicious morphology, and may substitute for biochemical testing in the preoperative setting. ('unenhanced attenuation values', 'MPA', (124, 153)) ('<=3', 'Var', (116, 119)) ('pheochromocytoma', 'Disease', (59, 75)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (59, 75)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (59, 75)) 40072 26559265 Delaying operation causes many troubles and burdens to patients and hospital, and is a dilemma because most AIs are nonfunctioning adenomas. ('patients', 'Species', '9606', (55, 63)) ('adenomas', 'Disease', 'MESH:D000236', (131, 139)) ('Delaying', 'Var', (0, 8)) ('adenomas', 'Disease', (131, 139)) 40121 26559265 A combination of tumor size <=3 cm, UA <=10 HU, and absence of suspicious morphology had 100% specificity for the exclusion of pheochromocytomas and malignancies (Table 3). ('tumor', 'Disease', (17, 22)) ('pheochromocytomas and malignancies', 'Disease', 'MESH:D010673', (127, 161)) ('<=3', 'Var', (28, 31)) ('tumor', 'Disease', 'MESH:D009369', (17, 22)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (127, 143)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (127, 144)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) 40175 25563310 Clinical and Genetic Investigation of a Multi-generational Chinese Family Afflicted with Von Hippel-Lindau Disease Von Hippel-Lindau (VHL) disease is a hereditary tumor disorder caused by mutations or deletions of the VHL gene. ('Von Hippel-Lindau Disease', 'Disease', 'MESH:D006623', (89, 114)) ('VHL', 'Gene', '7428', (134, 137)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('hereditary tumor disorder', 'Disease', (152, 177)) ('VHL', 'Gene', (218, 221)) ('Von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (115, 146)) ('VHL', 'Gene', (134, 137)) ('Von Hippel-Lindau Disease', 'Disease', (89, 114)) ('VHL', 'Gene', '7428', (218, 221)) ('caused by', 'Reg', (178, 187)) ('hereditary tumor disorder', 'Disease', 'MESH:D030342', (152, 177)) ('mutations', 'Var', (188, 197)) ('deletions', 'Var', (201, 210)) 40181 25563310 At last, we summarized the VHL gene mutation in China by the literature review. ('VHL', 'Gene', '7428', (27, 30)) ('mutation', 'Var', (36, 44)) ('VHL', 'Gene', (27, 30)) 40184 25563310 A linkage analysis resulted in a high maximal LOD score of 8.26 (theta = 0.0) for the marker D3S1263, which is in the same chromosome region as VHL. ('D3S1263', 'Var', (93, 100)) ('VHL', 'Gene', '7428', (144, 147)) ('VHL', 'Gene', (144, 147)) 40185 25563310 Sequence analysis resulted in the identification of a functional C>T transition mutation (c. 499 C>T, p.R167W) located in exon 3 of the 167th codon of VHL. ('p.R167W', 'Mutation', 'rs5030820', (102, 109)) ('499 C>T', 'Var', (93, 100)) ('VHL', 'Gene', (151, 154)) ('VHL', 'Gene', '7428', (151, 154)) ('499 C>T', 'SUBSTITUTION', 'None', (93, 100)) 40186 25563310 The most frequent VHL mutations in China are p.S65 W, p.N78 S, p.R161Q and p.R167 W. The results supported the notion that the genomic sequence that corresponds to the 167th residue of VHL is a mutational hotspot. ('VHL', 'Gene', '7428', (18, 21)) ('p.R167 W', 'Mutation', 'rs5030820', (75, 83)) ('p.N78 S', 'Mutation', 'rs5030804', (54, 61)) ('p.R161Q', 'Var', (63, 70)) ('p.S65 W', 'Mutation', 'rs5030826', (45, 52)) ('p.R161Q', 'Mutation', 'rs730882035', (63, 70)) ('mutations', 'Var', (22, 31)) ('VHL', 'Gene', (185, 188)) ('p.N78 S', 'Var', (54, 61)) ('VHL', 'Gene', '7428', (185, 188)) ('VHL', 'Gene', (18, 21)) ('p.S65 W', 'Var', (45, 52)) ('p.R167 W.', 'Var', (75, 84)) 40189 25563310 The syndrome is caused by mutations or deletions of the VHL gene located on human chromosome 3p25, and is characterized by multi-organ tumors involvement, which include hemangioblastomas (HBs) in the central nervous system, retinal angiomas, renal clear cell carcinomas (RCCs) and cysts, pheochromocytomas, pancreatic cysts, and pancreatic endocrine tumors (PETs). ('VHL', 'Gene', (56, 59)) ('PETs', 'Phenotype', 'HP:0030405', (358, 362)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (169, 185)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('renal clear cell carcinomas', 'Disease', (242, 269)) ('hemangioblastomas', 'Disease', 'MESH:D018325', (169, 186)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (288, 305)) ('mutations', 'Var', (26, 35)) ('pancreatic endocrine tumors', 'Disease', (329, 356)) ('retinal angiomas', 'Disease', (224, 240)) ('pancreatic cysts', 'Disease', 'MESH:D010181', (307, 323)) ('VHL', 'Gene', '7428', (56, 59)) ('retinal angiomas', 'Disease', 'MESH:D012173', (224, 240)) ('pancreatic endocrine tumors', 'Disease', 'MESH:D010190', (329, 356)) ('pancreatic endocrine tumors', 'Phenotype', 'HP:0030405', (329, 356)) ('renal clear cell carcinomas', 'Disease', 'MESH:C538614', (242, 269)) ('RCC', 'Disease', (271, 274)) ('multi-organ tumors involvement', 'Disease', 'MESH:C564969', (123, 153)) ('multi-organ tumors involvement', 'Disease', (123, 153)) ('carcinoma', 'Phenotype', 'HP:0030731', (259, 268)) ('carcinomas', 'Phenotype', 'HP:0030731', (259, 269)) ('hemangioblastomas', 'Disease', (169, 186)) ('caused by', 'Reg', (16, 25)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (288, 304)) ('RCC', 'Disease', 'MESH:C538614', (271, 274)) ('pancreatic cysts', 'Disease', (307, 323)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (288, 305)) ('cysts', 'Disease', (281, 286)) ('pheochromocytomas', 'Disease', (288, 305)) ('tumors', 'Phenotype', 'HP:0002664', (350, 356)) ('pancreatic cysts', 'Phenotype', 'HP:0001737', (307, 323)) ('deletions', 'Var', (39, 48)) ('human', 'Species', '9606', (76, 81)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('tumor', 'Phenotype', 'HP:0002664', (350, 355)) 40191 25563310 The mutated p.VHL is thought to disrupt tumor-suppression through hypoxia-inducible factor (HIF)-1alpha-mediated effects that result in the degradation of HIF. ('mutated', 'Var', (4, 11)) ('hypoxia-inducible factor (HIF)-1alpha', 'Gene', '3091', (66, 103)) ('HIF', 'MPA', (155, 158)) ('tumor', 'Disease', 'MESH:D009369', (40, 45)) ('disrupt', 'NegReg', (32, 39)) ('tumor', 'Disease', (40, 45)) ('degradation', 'MPA', (140, 151)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('VHL', 'Gene', (14, 17)) ('VHL', 'Gene', '7428', (14, 17)) 40196 25563310 Faulty genes within the network can act synergistically to induce tumors and the network can result in a cascade effect that affects tumor suppression by activating and inhibiting downstream genes. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('tumor', 'Disease', 'MESH:D009369', (133, 138)) ('tumor', 'Disease', (66, 71)) ('tumors', 'Disease', (66, 72)) ('tumors', 'Disease', 'MESH:D009369', (66, 72)) ('tumors', 'Phenotype', 'HP:0002664', (66, 72)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('induce', 'PosReg', (59, 65)) ('tumor', 'Disease', (133, 138)) ('inhibiting', 'NegReg', (169, 179)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) ('Faulty genes', 'Var', (0, 12)) ('activating', 'PosReg', (154, 164)) ('result in', 'Reg', (93, 102)) 40202 25563310 Currently, based on the analysis of more than 300 families afflicted with VHL disease, more than 823 distinct mutations have been detected and registered in the Universal VHL-Mutation Database. ('mutations', 'Var', (110, 119)) ('VHL disease', 'Disease', 'MESH:D006623', (74, 85)) ('VHL', 'Gene', (74, 77)) ('VHL', 'Gene', (171, 174)) ('VHL', 'Gene', '7428', (74, 77)) ('VHL', 'Gene', '7428', (171, 174)) ('VHL disease', 'Disease', (74, 85)) 40210 25563310 We genotyped three polymorphic microsatellite markers that flanked VHL on chromosome 3p25 (D3S3691, D3S1597 and D3S1263). ('VHL', 'Gene', '7428', (67, 70)) ('D3S3691', 'Var', (91, 98)) ('D3S1597', 'Var', (100, 107)) ('D3S1263', 'Var', (112, 119)) ('VHL', 'Gene', (67, 70)) 40222 25563310 A functional C>T transition mutation located within exon 3 of VHL (c. 499 C>T, p.R167W) was identified by mutation screening. ('499 C>T', 'Var', (70, 77)) ('p.R167W', 'Mutation', 'rs5030820', (79, 86)) ('VHL', 'Gene', (62, 65)) ('499 C>T', 'SUBSTITUTION', 'None', (70, 77)) ('VHL', 'Gene', '7428', (62, 65)) 40224 25563310 Currently, nine studies including the present study have been conducted on 77 Chinese families and have described 49 mutations of VHL. ('VHL', 'Gene', (130, 133)) ('mutations', 'Var', (117, 126)) ('VHL', 'Gene', '7428', (130, 133)) 40226 25563310 Independent of phenotype, the most frequent mutations were p.S65W, p.N78S, p.R161Q and p.R167W. ('p.N78S', 'Mutation', 'rs5030804', (67, 73)) ('p.S65W', 'Var', (59, 65)) ('p.R161Q', 'Mutation', 'rs730882035', (75, 82)) ('p.S65W', 'Mutation', 'rs5030826', (59, 65)) ('p.N78S', 'Var', (67, 73)) ('p.R167W', 'Mutation', 'rs5030820', (87, 94)) ('p.R167W', 'Var', (87, 94)) ('frequent', 'Reg', (35, 43)) ('p.R161Q', 'Var', (75, 82)) 40227 25563310 The majority of the mutations (40) were associated with phenotype I. Mutation p.R167W was associated with phenotypes IIA, IIB, and IIC. ('p.R167W', 'Var', (78, 85)) ('IIB', 'Disease', (122, 125)) ('p.R167W', 'Mutation', 'rs5030820', (78, 85)) 40228 25563310 Mutation p.Y98C was associated with phenotype IIA. ('p.Y98C', 'Var', (9, 15)) ('p.Y98C', 'Mutation', 'rs864321643', (9, 15)) ('associated', 'Reg', (20, 30)) 40229 25563310 p.N78S, p.S80I, p.P86S, p.V130F, and intron 1 splice mutation c. 340 + 5G>C were associated with phenotype IIB, and p.H125P and p.R161Q were associated with phenotype IIC. ('p.P86S', 'Var', (16, 22)) ('p.N78S', 'Var', (0, 6)) ('p.R161Q', 'Mutation', 'rs730882035', (128, 135)) ('340 + 5G>C', 'Var', (65, 75)) ('340 + 5G>C', 'SUBSTITUTION', 'None', (65, 75)) ('p.P86S', 'Mutation', 'rs398123481', (16, 22)) ('p.V130F', 'Var', (24, 31)) ('p.H125P', 'Mutation', 'rs869025643', (116, 123)) ('p.H125P', 'Var', (116, 123)) ('associated', 'Reg', (141, 151)) ('p.S80I', 'Mutation', 'rs5030805', (8, 14)) ('p.N78S', 'Mutation', 'rs5030804', (0, 6)) ('p.S80I', 'Var', (8, 14)) ('p.R161Q', 'Var', (128, 135)) ('p.V130F', 'Mutation', 'rs104893830', (24, 31)) ('associated', 'Reg', (81, 91)) 40230 25563310 VHL disease is an autosomal dominant familial neoplasm syndrome caused by mutations in VHL that can lead to the development of tumors and cysts in multiple organs. ('autosomal dominant familial neoplasm syndrome', 'Disease', (18, 63)) ('VHL', 'Gene', '7428', (87, 90)) ('VHL disease', 'Disease', (0, 11)) ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('tumors', 'Disease', (127, 133)) ('tumors', 'Phenotype', 'HP:0002664', (127, 133)) ('autosomal dominant familial neoplasm syndrome', 'Disease', 'MESH:D030342', (18, 63)) ('mutations', 'Var', (74, 83)) ('tumors', 'Disease', 'MESH:D009369', (127, 133)) ('caused by', 'Reg', (64, 73)) ('VHL disease', 'Disease', 'MESH:D006623', (0, 11)) ('VHL', 'Gene', (0, 3)) ('neoplasm', 'Phenotype', 'HP:0002664', (46, 54)) ('lead to', 'Reg', (100, 107)) ('VHL', 'Gene', '7428', (0, 3)) ('VHL', 'Gene', (87, 90)) 40231 25563310 In our study, we identified a functional C>T transition mutation (c. 499 C>T, p.R167 W) in the VHL gene in a North-western Chinese family suffering from VHL disease by linkage and sequencing analyses. ('499 C>T', 'SUBSTITUTION', 'None', (69, 76)) ('VHL', 'Gene', (153, 156)) ('VHL', 'Gene', (95, 98)) ('p.R167 W', 'Mutation', 'rs5030820', (78, 86)) ('VHL disease', 'Disease', (153, 164)) ('VHL', 'Gene', '7428', (153, 156)) ('VHL', 'Gene', '7428', (95, 98)) ('499 C>T', 'Var', (69, 76)) ('VHL disease', 'Disease', 'MESH:D006623', (153, 164)) 40232 25563310 The p.R167W mutation resulted in the substitution of arginine at position 167 with a tryptophan residue that co-segregated only in affected individuals. ('arginine at position 167 with a tryptophan', 'Mutation', 'rs5030820', (53, 95)) ('substitution', 'Reg', (37, 49)) ('arginine', 'MPA', (53, 61)) ('p.R167W', 'Mutation', 'rs5030820', (4, 11)) ('resulted in', 'Reg', (21, 32)) ('p.R167W', 'Var', (4, 11)) 40234 25563310 The results of this research firmly indicated that the p.R167W mutation of VHL caused the disease in this family. ('disease', 'Disease', (90, 97)) ('VHL', 'Gene', (75, 78)) ('caused', 'Reg', (79, 85)) ('VHL', 'Gene', '7428', (75, 78)) ('p.R167W', 'Mutation', 'rs5030820', (55, 62)) ('p.R167W', 'Var', (55, 62)) 40236 25563310 Mutations in VHL that result in amino acid changes between codons 157-189 tend to be associated with increases in the severity of tumors. ('tumors', 'Disease', (130, 136)) ('tumors', 'Disease', 'MESH:D009369', (130, 136)) ('amino acid changes', 'Var', (32, 50)) ('severity', 'MPA', (118, 126)) ('increases', 'PosReg', (101, 110)) ('VHL', 'Gene', (13, 16)) ('Mutations', 'Var', (0, 9)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('VHL', 'Gene', '7428', (13, 16)) ('tumors', 'Phenotype', 'HP:0002664', (130, 136)) 40238 25563310 Notably, the p.R167W mutation was found in four VHL phenotypes. ('VHL', 'Gene', '7428', (48, 51)) ('p.R167W', 'Mutation', 'rs5030820', (13, 20)) ('p.R167W', 'Var', (13, 20)) ('found', 'Reg', (34, 39)) ('VHL', 'Gene', (48, 51)) 40240 25563310 reported that germline mutations of codon 167 convey a high risk for the development of pheochromocytoma. ('codon 167', 'Gene', (36, 45)) ('pheochromocytoma', 'Disease', (88, 104)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (88, 104)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (88, 104)) ('germline mutations', 'Var', (14, 32)) 40241 25563310 Moreover, the codon 167 mutation is correlated with the pheochromocytoma coalition with PETs. ('pheochromocytoma coalition', 'Disease', 'MESH:D010673', (56, 82)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (56, 72)) ('codon 167 mutation', 'Var', (14, 32)) ('PETs', 'Phenotype', 'HP:0030405', (88, 92)) ('pheochromocytoma coalition', 'Disease', (56, 82)) ('correlated with', 'Reg', (36, 51)) 40242 25563310 found the mutant VHL alleles that are associated with the subtypes that are characterized by pheochromocytoma with (p.R167Q and p.Rl67W) or without renal carcinoma (p.Y98H and p.Y112H). ('p.R167Q', 'Var', (116, 123)) ('p.Y112H', 'Var', (176, 183)) ('p.Y112H', 'Mutation', 'rs104893824', (176, 183)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('associated', 'Reg', (38, 48)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (148, 163)) ('p.Y98H', 'Var', (165, 171)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (93, 109)) ('carcinoma', 'Phenotype', 'HP:0030731', (154, 163)) ('p.Rl67W', 'Var', (128, 135)) ('VHL', 'Gene', (17, 20)) ('p.Y98H', 'Mutation', 'rs5030809', (165, 171)) ('renal carcinoma', 'Disease', 'MESH:C538614', (148, 163)) ('p.R167Q', 'Mutation', 'rs5030821', (116, 123)) ('VHL', 'Gene', '7428', (17, 20)) ('renal carcinoma', 'Disease', (148, 163)) ('pheochromocytoma', 'Disease', (93, 109)) 40243 25563310 However, in the family we studied, the p.Rl67W mutation was connected to the pheochromocytoma without renal carcinoma phenotype. ('carcinoma', 'Phenotype', 'HP:0030731', (108, 117)) ('renal carcinoma', 'Disease', 'MESH:C538614', (102, 117)) ('connected', 'Reg', (60, 69)) ('pheochromocytoma', 'Disease', (77, 93)) ('renal carcinoma', 'Disease', (102, 117)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (77, 93)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (77, 93)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (102, 117)) ('p.Rl67W', 'Var', (39, 46)) 40244 25563310 In China, there were reports of associations of p.Rl67W with each subtype of VHL. ('VHL', 'Gene', '7428', (77, 80)) ('VHL', 'Gene', (77, 80)) ('associations', 'Interaction', (32, 44)) ('p.Rl67W', 'Var', (48, 55)) 40245 25563310 To the best of our knowledge, the first reported the association of p.R167W with Type II VHL in a family of Chinese origin. ('p.R167W', 'Mutation', 'rs5030820', (68, 75)) ('Type II VHL', 'Disease', 'MESH:D006623', (81, 92)) ('Type II VHL', 'Disease', (81, 92)) ('p.R167W', 'Var', (68, 75)) ('association', 'Interaction', (53, 64)) 40246 25563310 The p.Rl67W mutation resulted in a change from arginine to tryptophan at position 167. ('arginine to tryptophan at position 167', 'Mutation', 'rs5030820', (47, 85)) ('change', 'Reg', (35, 41)) ('arginine to tryptophan at position 167', 'MPA', (47, 85)) ('p.Rl67W', 'Var', (4, 11)) 40248 25563310 Moreover, the benzene ring structure of tryptophan can affect the secondary and three-dimensional structure of proteins, and indeed, replacement of residues by tryptophan in other polypeptides has been associated with various diseases. ('replacement', 'Var', (133, 144)) ('affect', 'Reg', (55, 61)) ('associated', 'Reg', (202, 212)) ('residues', 'Var', (148, 156)) ('benzene', 'Chemical', 'MESH:D001554', (14, 21)) ('tryptophan', 'Chemical', 'MESH:D014364', (160, 170)) ('tryptophan', 'Chemical', 'MESH:D014364', (40, 50)) ('benzene ring structure', 'MPA', (14, 36)) 40250 25563310 Our summary of the numbers of VHL mutations that have been reported in various Chinese families revealed that these numbers are substantially lower than the numbers of mutations that have been reported in populations of European origin. ('VHL', 'Gene', '7428', (30, 33)) ('VHL', 'Gene', (30, 33)) ('mutations', 'Var', (34, 43)) 40251 25563310 The most frequent mutations in China are p.S65W, p.N78S, p.R161Q and p.R167W, and the most frequent mutations in Western countries are p.F76del, p.N78S, p.Rl61Stop, p.R167Q, p.R167W and p.L178P. ('p.R167W', 'Mutation', 'rs5030820', (174, 181)) ('p.S65W', 'Var', (41, 47)) ('p.N78S', 'Var', (49, 55)) ('p.R167W', 'Var', (174, 181)) ('p.S65W', 'Mutation', 'rs5030826', (41, 47)) ('p.R161Q', 'Mutation', 'rs730882035', (57, 64)) ('p.N78S', 'Mutation', 'rs5030804', (145, 151)) ('p.L178P', 'Mutation', 'rs5030822', (186, 193)) ('p.R161Q', 'Var', (57, 64)) ('p.F76del', 'Mutation', 'p.76delF', (135, 143)) ('p.N78S', 'Mutation', 'rs5030804', (49, 55)) ('p.R167W', 'Mutation', 'rs5030820', (69, 76)) ('p.L178P', 'Var', (186, 193)) ('p.R167W', 'Var', (69, 76)) ('p.R167Q', 'Mutation', 'rs5030821', (165, 172)) ('p.R167Q', 'Var', (165, 172)) ('p.Rl61Stop', 'Var', (153, 163)) ('p.N78S', 'Var', (145, 151)) ('p.F76del', 'Var', (135, 143)) 40255 25563310 In summary, the present study identified a functional C>T transition mutation (c. 499 C>T, p.R167W) located within exon 3 of VHL that is likely the cause of VHL disease in this family. ('VHL', 'Gene', (125, 128)) ('VHL', 'Gene', '7428', (125, 128)) ('VHL disease', 'Disease', 'MESH:D006623', (157, 168)) ('VHL', 'Gene', (157, 160)) ('499 C>T', 'SUBSTITUTION', 'None', (82, 89)) ('VHL', 'Gene', '7428', (157, 160)) ('cause', 'Reg', (148, 153)) ('p.R167W', 'Mutation', 'rs5030820', (91, 98)) ('VHL disease', 'Disease', (157, 168)) ('499 C>T', 'Var', (82, 89)) 40256 25563310 VHL mutations suggest that the function of VHL might be similar to other check-point proteins in that when mutations are present, uncontrolled cell proliferation (or more precisely, neoplasias) arise in various tissues. ('neoplasias', 'Phenotype', 'HP:0002664', (182, 192)) ('mutations', 'Var', (107, 116)) ('VHL', 'Gene', (43, 46)) ('neoplasias', 'Disease', 'MESH:D009369', (182, 192)) ('neoplasias', 'Disease', (182, 192)) ('VHL', 'Gene', '7428', (43, 46)) ('VHL', 'Gene', (0, 3)) ('mutations', 'Var', (4, 13)) ('VHL', 'Gene', '7428', (0, 3)) 40319 24675699 The hereditary PHEO appears as a component of multiple endocrine neoplasia type 2 (MEN 2), von Hippel-Lindau disease (VHL), neurofibromatosis type 1 (NF1) or familial paraganglioma syndromes (caused by mutations of SDHD and SDHB genes). ('SDHD', 'Gene', '6392', (215, 219)) ('multiple endocrine neoplasia type 2', 'Disease', (46, 81)) ('NF1', 'Gene', (150, 153)) ('familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (158, 190)) ('neurofibromatosis type 1', 'Gene', (124, 148)) ('VHL', 'Disease', 'MESH:D006623', (118, 121)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (91, 116)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (124, 141)) ('SDHD', 'Gene', (215, 219)) ('neoplasia', 'Phenotype', 'HP:0002664', (65, 74)) ('caused by', 'Reg', (192, 201)) ('von Hippel-Lindau disease', 'Disease', (91, 116)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (46, 81)) ('neurofibromatosis type 1', 'Gene', '4763', (124, 148)) ('VHL', 'Disease', (118, 121)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (55, 74)) ('NF1', 'Gene', '4763', (150, 153)) ('PHEO', 'Phenotype', 'HP:0002666', (15, 19)) ('MEN', 'Species', '9606', (83, 86)) ('familial paraganglioma syndromes', 'Disease', (158, 190)) ('SDHB', 'Gene', (224, 228)) ('paraganglioma', 'Phenotype', 'HP:0002668', (167, 180)) ('mutations', 'Var', (202, 211)) 40346 24675699 The identified RET germline mutations in MEN2-associated PHEO patients were as follows: 7 (50%) C634Y, 1 (7.1%) C634R, 3 (21.4%) C634W, 1 (7.1%) C618R and 2 (14.3%) M918T. ('C634Y', 'Var', (96, 101)) ('PHEO', 'Phenotype', 'HP:0002666', (57, 61)) ('MEN2-associated', 'Disease', (41, 56)) ('C634W', 'Var', (129, 134)) ('C634R', 'Var', (112, 117)) ('C618R', 'Mutation', 'rs76262710', (145, 150)) ('C634Y', 'Mutation', 'rs75996173', (96, 101)) ('C634W', 'SUBSTITUTION', 'None', (129, 134)) ('RET', 'Gene', '5979', (15, 18)) ('MEN', 'Species', '9606', (41, 44)) ('M918T', 'Mutation', 'rs74799832', (165, 170)) ('C634R', 'Mutation', 'rs75076352', (112, 117)) ('C618R', 'Var', (145, 150)) ('patients', 'Species', '9606', (62, 70)) ('RET', 'Gene', (15, 18)) ('M918T', 'Var', (165, 170)) 40379 24675699 It was observed that PHEOs associated with SDHx mutations and VHL disease had a markedly increase in the expression of major angiogenic molecules than those associated with NF1 disease, MEN2 syndrome or sporadic tumors. ('SDHx', 'Chemical', '-', (43, 47)) ('tumors', 'Phenotype', 'HP:0002664', (212, 218)) ('SDHx', 'Gene', (43, 47)) ('mutations', 'Var', (48, 57)) ('NF1 disease', 'Disease', 'MESH:C537392', (173, 184)) ('PHEOs', 'Chemical', '-', (21, 26)) ('MEN2 syndrome', 'Disease', 'MESH:D013577', (186, 199)) ('sporadic tumors', 'Disease', 'MESH:D009369', (203, 218)) ('VHL disease', 'Disease', 'MESH:D006623', (62, 73)) ('MEN2 syndrome', 'Disease', (186, 199)) ('expression of major angiogenic molecules', 'MPA', (105, 145)) ('tumor', 'Phenotype', 'HP:0002664', (212, 217)) ('sporadic tumors', 'Disease', (203, 218)) ('NF1 disease', 'Disease', (173, 184)) ('VHL disease', 'Disease', (62, 73)) ('increase', 'PosReg', (89, 97)) ('PHEO', 'Phenotype', 'HP:0002666', (21, 25)) 40380 24675699 The expression level of VEGF-A in hereditary paraganglioma associated with inactivation of the SDHD gene was higher than those observed in sporadic tumors. ('inactivation', 'Var', (75, 87)) ('expression level', 'MPA', (4, 20)) ('VEGF-A', 'Gene', '7422', (24, 30)) ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('VEGF-A', 'Gene', (24, 30)) ('higher', 'PosReg', (109, 115)) ('hereditary paraganglioma', 'Disease', 'MESH:D010235', (34, 58)) ('sporadic tumors', 'Disease', (139, 154)) ('SDHD', 'Gene', '6392', (95, 99)) ('paraganglioma', 'Phenotype', 'HP:0002668', (45, 58)) ('hereditary paraganglioma', 'Disease', (34, 58)) ('SDHD', 'Gene', (95, 99)) ('tumors', 'Phenotype', 'HP:0002664', (148, 154)) ('sporadic tumors', 'Disease', 'MESH:D009369', (139, 154)) 40398 24675699 Sections representing PHEO were submitted to routine immunohistochemical technique, which comprises deparaffination and rehydration, antigenic recovery, inactivation of endogenous peroxidase, and blockage of unspecific reactions. ('PHEO', 'Phenotype', 'HP:0002666', (22, 26)) ('inactivation', 'Var', (153, 165)) ('paraffin', 'Chemical', 'MESH:D010232', (102, 110)) ('endogenous peroxidase', 'Enzyme', (169, 190)) 40399 24675699 Primary antibodies were incubated overnight at a temperature of 4 C, at dilutions of 1:100 (VEGF-A), 1:100 (VEGFR-1), and 1:200 (VEGFR-2), followed by application of streptavidin horseradish peroxidase conjugate (LSAB; DakoCytomation, Via Real Carpinteria, CA, USA), and diaminobenzidinetetrahydrochloride (Kit DAB; DakoCytomation). ('VEGFR-2', 'Gene', (130, 137)) ('VEGFR-1', 'Gene', (109, 116)) ('horseradish', 'Species', '3704', (180, 191)) ('DAB', 'Chemical', 'MESH:C000469', (312, 315)) ('VEGFR-1', 'Gene', '2321', (109, 116)) ('diaminobenzidinetetrahydrochloride', 'Chemical', '-', (272, 306)) ('1:100', 'Var', (102, 107)) ('1:200', 'Var', (123, 128)) ('VEGF-A', 'Gene', '7422', (93, 99)) ('VEGFR-2', 'Gene', '3791', (130, 137)) ('VEGF-A', 'Gene', (93, 99)) 40412 20223020 Genetic predisposition can occur within the familial tumour syndromes multiple endocrine neoplasia type 2 (MEN 2), von Hippel-Lindau (VHL) and neurofibromatosis type 1 (NF-1), or be due to mutations in genes specific to the development of paraganglioma only. ('tumour', 'Phenotype', 'HP:0002664', (53, 59)) ('paraganglioma', 'Disease', (239, 252)) ('VHL', 'Disease', (134, 137)) ('neurofibromatosis type 1', 'Gene', (143, 167)) ('VHL', 'Disease', 'MESH:D006623', (134, 137)) ('neurofibromatosis type 1', 'Gene', '4763', (143, 167)) ('paraganglioma', 'Disease', 'MESH:D010235', (239, 252)) ('NF-1', 'Gene', '4763', (169, 173)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (79, 98)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (143, 160)) ('von Hippel-Lindau', 'Gene', (115, 132)) ('MEN', 'Species', '9606', (107, 110)) ('NF-1', 'Gene', (169, 173)) ('mutations', 'Var', (189, 198)) ('von Hippel-Lindau', 'Gene', '7428', (115, 132)) ('paraganglioma', 'Phenotype', 'HP:0002668', (239, 252)) ('neoplasia', 'Phenotype', 'HP:0002664', (89, 98)) ('familial tumour syndromes multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (44, 105)) 40458 20223020 The genetic defect of paragangliomas is an inactivating mutation in one of the paraganglioma genes, the so-called PGL genes. ('paraganglioma', 'Disease', 'MESH:D010235', (79, 92)) ('inactivating mutation', 'Var', (43, 64)) ('genetic defect of paragangliomas', 'Disease', 'MESH:D030342', (4, 36)) ('paraganglioma', 'Disease', (22, 35)) ('genetic defect of paragangliomas', 'Disease', (4, 36)) ('PGL', 'Gene', (114, 117)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('paraganglioma', 'Disease', 'MESH:D010235', (22, 35)) ('paraganglioma', 'Disease', (79, 92)) ('paraganglioma', 'Phenotype', 'HP:0002668', (22, 35)) ('paragangliomas', 'Phenotype', 'HP:0002668', (22, 36)) 40459 20223020 Somatic, inactivating mutations result in sporadic, mostly solitary tumours. ('tumour', 'Phenotype', 'HP:0002664', (68, 74)) ('tumours', 'Phenotype', 'HP:0002664', (68, 75)) ('inactivating mutations', 'Var', (9, 31)) ('result in', 'Reg', (32, 41)) ('mostly solitary tumours', 'Disease', (52, 75)) ('sporadic', 'Disease', (42, 50)) ('mostly solitary tumours', 'Disease', 'MESH:D054705', (52, 75)) 40466 20223020 Mutations in DNA of genes encoding enzymes called succinate dehydrogenase (SDH) are associated with development of paragangliomas. ('succinate dehydrogenase', 'Gene', '6390', (50, 73)) ('paragangliomas', 'Disease', (115, 129)) ('paragangliomas', 'Disease', 'MESH:D010235', (115, 129)) ('SDH', 'Gene', '6390', (75, 78)) ('Mutations', 'Var', (0, 9)) ('paraganglioma', 'Phenotype', 'HP:0002668', (115, 128)) ('paragangliomas', 'Phenotype', 'HP:0002668', (115, 129)) ('associated', 'Reg', (84, 94)) ('succinate dehydrogenase', 'Gene', (50, 73)) ('SDH', 'Gene', (75, 78)) ('DNA of', 'Gene', (13, 19)) 40473 20223020 If in a cell of a paraganglioma a mutation is present in one of the SDH genes, insufficient ATP will be available in relation to the need for energy. ('paraganglioma', 'Disease', 'MESH:D010235', (18, 31)) ('ATP', 'Chemical', 'MESH:D000255', (92, 95)) ('SDH', 'Gene', (68, 71)) ('mutation', 'Var', (34, 42)) ('insufficient', 'Disease', (79, 91)) ('insufficient', 'Disease', 'MESH:D000309', (79, 91)) ('paraganglioma', 'Phenotype', 'HP:0002668', (18, 31)) ('paraganglioma', 'Disease', (18, 31)) ('SDH', 'Gene', '6390', (68, 71)) 40483 20223020 Mutations in the SDHB gene give a higher risk for malignant, especially extra-adrenal abdominal, paragangliomas than SDHD mutations do. ('paragangliomas', 'Phenotype', 'HP:0002668', (97, 111)) ('extra-adrenal abdominal', 'Disease', (72, 95)) ('SDHD', 'Gene', '6392', (117, 121)) ('SDHB', 'Gene', '6390', (17, 21)) ('paraganglioma', 'Phenotype', 'HP:0002668', (97, 110)) ('Mutations', 'Var', (0, 9)) ('paragangliomas', 'Disease', (97, 111)) ('paragangliomas', 'Disease', 'MESH:D010235', (97, 111)) ('SDHB', 'Gene', (17, 21)) ('malignant', 'Disease', (50, 59)) ('SDHD', 'Gene', (117, 121)) 40485 20223020 Also mutations in this gene may cause hereditary paragangliomas; however, these mutations occur less frequently than SDHD mutations. ('hereditary paragangliomas', 'Disease', 'MESH:D010235', (38, 63)) ('hereditary paragangliomas', 'Disease', (38, 63)) ('mutations', 'Var', (5, 14)) ('paragangliomas', 'Phenotype', 'HP:0002668', (49, 63)) ('paraganglioma', 'Phenotype', 'HP:0002668', (49, 62)) ('SDHD', 'Gene', (117, 121)) ('cause', 'Reg', (32, 37)) ('SDHD', 'Gene', '6392', (117, 121)) 40487 20223020 Mutations in this gene cause a disease involving a combination of atrophy of the optical nerve, myopathy and ataxia, although without paragangliomas. ('ataxia', 'Disease', (109, 115)) ('paraganglioma', 'Phenotype', 'HP:0002668', (134, 147)) ('myopathy', 'Phenotype', 'HP:0003198', (96, 104)) ('myopathy', 'Disease', (96, 104)) ('paragangliomas', 'Phenotype', 'HP:0002668', (134, 148)) ('Mutations', 'Var', (0, 9)) ('ataxia', 'Phenotype', 'HP:0001251', (109, 115)) ('ataxia', 'Disease', 'MESH:D001259', (109, 115)) ('paragangliomas', 'Disease', 'MESH:D010235', (134, 148)) ('atrophy of the optical nerve', 'Disease', 'MESH:D009896', (66, 94)) ('cause', 'Reg', (23, 28)) ('paragangliomas', 'Disease', (134, 148)) ('myopathy', 'Disease', 'MESH:D009135', (96, 104)) ('atrophy of the optical nerve', 'Disease', (66, 94)) 40492 20223020 If a child inherits a mutated paraganglioma gene from one of its parents, it becomes a disease-gene carrier. ('paraganglioma', 'Phenotype', 'HP:0002668', (30, 43)) ('child', 'Species', '9606', (5, 10)) ('paraganglioma', 'Disease', (30, 43)) ('mutated', 'Var', (22, 29)) ('paraganglioma', 'Disease', 'MESH:D010235', (30, 43)) 40496 20223020 Exclusive transmission of the disease via the father may be explained by a hereditary mutation of the SDHD gene from the father combined with imprinting of the homologous allele from the mother, together with the loss of 11p15, 5. ('SDHD', 'Gene', (102, 106)) ('SDHD', 'Gene', '6392', (102, 106)) ('mutation', 'Var', (86, 94)) 40518 20223020 especially children of fathers with a SDHD mutation have to be investigated periodically early diagnosis is indicated, because morbidity is related to the diameter of the tumour if possible, resection of a paraganglioma has to be performed at an early stage preferably, the surgical procedure should be performed by surgeons with experience in the head and neck region and in techniques of vascular reconstruction DNA analysis of children from families with a known SDH mutation has to be performed before the age of 5 years ('paraganglioma', 'Disease', 'MESH:D010235', (210, 223)) ('children', 'Species', '9606', (11, 19)) ('tumour', 'Disease', (173, 179)) ('SDH', 'Gene', '6390', (38, 41)) ('SDH', 'Gene', '6390', (474, 477)) ('mutation', 'Var', (43, 51)) ('paraganglioma', 'Phenotype', 'HP:0002668', (210, 223)) ('children', 'Species', '9606', (438, 446)) ('SDH', 'Gene', (474, 477)) ('tumour', 'Phenotype', 'HP:0002664', (173, 179)) ('SDH', 'Gene', (38, 41)) ('paraganglioma', 'Disease', (210, 223)) ('mutation', 'Var', (478, 486)) ('SDHD', 'Gene', (38, 42)) ('SDHD', 'Gene', '6392', (38, 42)) ('tumour', 'Disease', 'MESH:D009369', (173, 179)) 40520 33810219 Around 40% of pheochromocytomas/paragangliomas (PPGL) harbor germline mutations, representing the highest heritability among human tumors. ('paraganglioma', 'Phenotype', 'HP:0002668', (32, 45)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (14, 30)) ('germline mutations', 'Var', (61, 79)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('human', 'Species', '9606', (125, 130)) ('tumors', 'Phenotype', 'HP:0002664', (131, 137)) ('pheochromocytomas/paragangliomas', 'Disease', (14, 46)) ('tumors', 'Disease', 'MESH:D009369', (131, 137)) ('tumors', 'Disease', (131, 137)) ('PPGL', 'Chemical', '-', (48, 52)) ('paragangliomas', 'Phenotype', 'HP:0002668', (32, 46)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (14, 31)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (14, 46)) 40522 33810219 In this review, we present the potential relevance of non-coding RNA molecules including microRNAs, long non-coding RNAs and circular RNAs in PPGL pathogenesis and diagnosis. ('long non-coding RNAs', 'Var', (100, 120)) ('PPGL', 'Disease', (142, 146)) ('PPGL', 'Chemical', '-', (142, 146)) 40527 33810219 Non-coding RNA molecules encompassing microRNAs, long non-coding RNAs, and circular RNAs have been implicated in the pathogenesis of various tumors, and were also proposed as valuable diagnostic, prognostic factors, and even potential treatment targets. ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('tumors', 'Phenotype', 'HP:0002664', (141, 147)) ('tumors', 'Disease', 'MESH:D009369', (141, 147)) ('tumors', 'Disease', (141, 147)) ('implicated', 'Reg', (99, 109)) ('long non-coding RNAs', 'Var', (49, 69)) 40529 33810219 Non-coding RNA molecules encompassing microRNAs, long non-coding RNAs, and circular RNAs have been implicated in the pathogenesis of various tumors, and were also proposed as valuable diagnostic and prognostic factors, and even potential therapeutic targets. ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('tumors', 'Phenotype', 'HP:0002664', (141, 147)) ('tumors', 'Disease', 'MESH:D009369', (141, 147)) ('tumors', 'Disease', (141, 147)) ('implicated', 'Reg', (99, 109)) ('long non-coding RNAs', 'Var', (49, 69)) 40530 33810219 Given the fact that the pathogenesis of tumors including pheochromocytomas/paragangliomas (PPGL) is partly linked to epigenetic dysregulation, it is reasonable to investigate their epigenetic expression profiles. ('pheochromocytomas/paragangliomas', 'Disease', (57, 89)) ('epigenetic', 'Var', (117, 127)) ('paragangliomas', 'Phenotype', 'HP:0002668', (75, 89)) ('paraganglioma', 'Phenotype', 'HP:0002668', (75, 88)) ('tumors', 'Phenotype', 'HP:0002664', (40, 46)) ('linked', 'Reg', (107, 113)) ('tumors', 'Disease', 'MESH:D009369', (40, 46)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (57, 89)) ('PPGL', 'Chemical', '-', (91, 95)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (57, 73)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (57, 74)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('tumors', 'Disease', (40, 46)) 40535 33810219 This proportion of germline mutations has the highest degree of heritability among human tumors. ('germline mutations', 'Var', (19, 37)) ('tumors', 'Disease', (89, 95)) ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('tumors', 'Disease', 'MESH:D009369', (89, 95)) ('human', 'Species', '9606', (83, 88)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) 40540 33810219 On the other side up to 50% of patients with metastatic PPGL have specific germline mutations. ('PPGL', 'Gene', (56, 60)) ('patients', 'Species', '9606', (31, 39)) ('germline', 'Var', (75, 83)) ('PPGL', 'Chemical', '-', (56, 60)) 40541 33810219 The risk of metastasis is particularly high in individuals harboring germline SDHB mutations. ('mutations', 'Var', (83, 92)) ('SDHB', 'Gene', '6390', (78, 82)) ('metastasis', 'CPA', (12, 22)) ('SDHB', 'Gene', (78, 82)) ('germline', 'Var', (69, 77)) ('high', 'Reg', (39, 43)) 40542 33810219 PPGL susceptibility can be associated with mutations either in tumor suppressor genes (e.g., VHL, NF1, SDHB) or in proto-oncogenes (e.g., RET, HRAS). ('tumor', 'Disease', (63, 68)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('SDHB', 'Gene', (103, 107)) ('RET', 'Gene', '5979', (138, 141)) ('susceptibility', 'Reg', (5, 19)) ('VHL', 'Gene', '7428', (93, 96)) ('NF1', 'Gene', (98, 101)) ('mutations', 'Var', (43, 52)) ('PPGL', 'Gene', (0, 4)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('SDHB', 'Gene', '6390', (103, 107)) ('NF1', 'Gene', '4763', (98, 101)) ('HRAS', 'Gene', '3265', (143, 147)) ('PPGL', 'Chemical', '-', (0, 4)) ('RET', 'Gene', (138, 141)) ('VHL', 'Gene', (93, 96)) ('HRAS', 'Gene', (143, 147)) 40547 33810219 The cortical admixture type was found to be correlated with MAX (MYC associated factor X) mutations, which is also included as one of the susceptibility genes for hereditary PPGL. ('mutations', 'Var', (90, 99)) ('correlated', 'Reg', (44, 54)) ('PPGL', 'Chemical', '-', (174, 178)) ('MYC associated factor X', 'Gene', '4149', (65, 88)) ('MAX', 'Gene', '4149', (60, 63)) ('MAX', 'Gene', (60, 63)) ('MYC associated factor X', 'Gene', (65, 88)) 40573 33810219 Novel treatment options including VEGF (vascular endothelial growth factor) and tyrosine kinase inhibitors (e.g., axitinib, dovitinib, lenvatinib, sunitinib) exist for patients with SDHA, SDHB, SDHD, RET, VHL, and FH mutations in renal cell carcinoma and PPGL; furthermore, immunotherapies targeting PD-L1 (programmed death-ligand 1) checkpoint protein (e.g., pembrolizumab, ipilimumab, nivolumab) are currently under clinical investigation. ('carcinoma', 'Phenotype', 'HP:0030731', (241, 250)) ('VHL', 'Gene', (205, 208)) ('vascular endothelial growth factor', 'Gene', '7422', (40, 74)) ('SDHB', 'Gene', '6390', (188, 192)) ('SDHD', 'Gene', (194, 198)) ('RET', 'Gene', '5979', (200, 203)) ('PPGL', 'Chemical', '-', (255, 259)) ('PPGL', 'Gene', (255, 259)) ('vascular endothelial growth factor', 'Gene', (40, 74)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (230, 250)) ('VHL', 'Gene', '7428', (205, 208)) ('VEGF', 'Gene', '7422', (34, 38)) ('SDHB', 'Gene', (188, 192)) ('PD-L1', 'Gene', (300, 305)) ('VEGF', 'Gene', (34, 38)) ('RET', 'Gene', (200, 203)) ('PD-L1', 'Gene', '29126', (300, 305)) ('programmed death-ligand 1', 'Gene', (307, 332)) ('SDHA', 'Gene', (182, 186)) ('renal cell carcinoma', 'Disease', (230, 250)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (230, 250)) ('SDHA', 'Gene', '6389', (182, 186)) ('SDHD', 'Gene', '6392', (194, 198)) ('programmed death-ligand 1', 'Gene', '29126', (307, 332)) ('patients', 'Species', '9606', (168, 176)) ('mutations', 'Var', (217, 226)) 40574 33810219 Poly ADP-ribose polymerase (PARP) inhibitors (e.g., olaparib) represent another perspective in patients harboring SDHx mutations due to elevated levels of succinate and NAD+ inhibiting homologous recombination-based DNA repair mechanism which is known to be corrected by PARP, thus keeping aberrant cells alive. ('Poly ADP-ribose polymerase', 'Gene', '142', (0, 26)) ('elevated levels of succinate', 'Phenotype', 'HP:0020149', (136, 164)) ('SDH', 'Gene', (114, 117)) ('NAD+', 'Chemical', 'MESH:D009243', (169, 173)) ('PARP', 'Gene', '142', (28, 32)) ('homologous', 'MPA', (185, 195)) ('PARP', 'Gene', (28, 32)) ('NAD+', 'MPA', (169, 173)) ('PARP', 'Gene', '142', (271, 275)) ('mutations', 'Var', (119, 128)) ('PARP', 'Gene', (271, 275)) ('elevated', 'PosReg', (136, 144)) ('Poly ADP-ribose polymerase', 'Gene', (0, 26)) ('SDH', 'Gene', '6390', (114, 117)) ('succinate', 'Chemical', 'MESH:D019802', (155, 164)) ('inhibiting', 'NegReg', (174, 184)) ('levels', 'MPA', (145, 151)) ('patients', 'Species', '9606', (95, 103)) ('olaparib', 'Chemical', 'MESH:C531550', (52, 60)) 40575 33810219 Furthermore, there are two kinase signaling pathways (PI3K-Akt-mTOR and Ras-Raf-Erk) affected by mutations of RET, MAX, NF1, and TMEM127, which can be inhibited by kinase signaling inhibitors (e.g., the mTOR inhibitor everolimus). ('mutations', 'Var', (97, 106)) ('everolimus', 'Chemical', 'MESH:D000068338', (218, 228)) ('NF1', 'Gene', (120, 123)) ('MAX', 'Gene', (115, 118)) ('TMEM127', 'Gene', '55654', (129, 136)) ('mTOR', 'Gene', '2475', (203, 207)) ('RET', 'Gene', '5979', (110, 113)) ('mTOR', 'Gene', (63, 67)) ('Akt', 'Gene', (59, 62)) ('Erk', 'Gene', (80, 83)) ('affected', 'Reg', (85, 93)) ('MAX', 'Gene', '4149', (115, 118)) ('Akt', 'Gene', '207', (59, 62)) ('Erk', 'Gene', '5594', (80, 83)) ('RET', 'Gene', (110, 113)) ('mTOR', 'Gene', '2475', (63, 67)) ('Raf', 'Gene', '114486', (76, 79)) ('TMEM127', 'Gene', (129, 136)) ('NF1', 'Gene', '4763', (120, 123)) ('mTOR', 'Gene', (203, 207)) ('Raf', 'Gene', (76, 79)) 40582 33810219 Non-coding RNA molecules have been shown to be implicated in the pathogenesis of tumors. ('tumors', 'Disease', 'MESH:D009369', (81, 87)) ('tumors', 'Disease', (81, 87)) ('Non-coding', 'Var', (0, 10)) ('RNA molecules', 'Protein', (11, 24)) ('implicated', 'Reg', (47, 57)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('tumors', 'Phenotype', 'HP:0002664', (81, 87)) 40602 33810219 Epigenetic alterations can precede tumor formation (hence the prognostic value) and play major role in cell-to-cell communication (hence the therapeutic value) and by analyzing differential expression profiles, protein-protein interactions, gene set enrichment, dimensionality reduction, and tissue composition, it was elucidated that normal tissues adjacent to the tumor represent a unique in-between state concerning the molecular landscape. ('tumor', 'Disease', (366, 371)) ('Epigenetic alterations', 'Var', (0, 22)) ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('rat', 'Species', '10116', (15, 18)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('tumor', 'Disease', (35, 40)) ('tumor', 'Disease', 'MESH:D009369', (366, 371)) ('tumor', 'Phenotype', 'HP:0002664', (366, 371)) 40607 33810219 LncRNA BSN-AS2 and C9orf147 are future candidates to investigate their roles in tumorigenesis as their overexpression was associated with poor prognosis; moreover, the underexpression of C9orf147 was associated with good prognosis (Table 1). ('tumor', 'Disease', 'MESH:D009369', (80, 85)) ('BSN-AS2', 'Gene', (7, 14)) ('C9orf147', 'Gene', (187, 195)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('underexpression', 'Var', (168, 183)) ('tumor', 'Disease', (80, 85)) ('C9orf147', 'Gene', (19, 27)) ('BSN-AS2', 'Gene', '100132677', (7, 14)) ('C9orf147', 'Gene', '100133204', (187, 195)) ('overexpression', 'PosReg', (103, 117)) ('C9orf147', 'Gene', '100133204', (19, 27)) 40610 33810219 PTPRJ underexpression was found to be correlated with good prognosis. ('PTPRJ', 'Gene', (0, 5)) ('PTPRJ', 'Gene', '5795', (0, 5)) ('underexpression', 'Var', (6, 21)) 40614 33810219 In the SDHx subtype, a putative lncRNA BC063866 was found to be able to distinguish between metastatic tumors and tumors that remain indolent. ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('tumors', 'Phenotype', 'HP:0002664', (103, 109)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('SDH', 'Gene', (7, 10)) ('tumors', 'Disease', (103, 109)) ('BC063866', 'Var', (39, 47)) ('tumors', 'Disease', 'MESH:D009369', (103, 109)) ('tumors', 'Disease', (114, 120)) ('tumors', 'Disease', 'MESH:D009369', (114, 120)) ('tumors', 'Phenotype', 'HP:0002664', (114, 120)) ('SDH', 'Gene', '6390', (7, 10)) 40616 33810219 Furthermore, lncRNA BC063866 was found to be an independent risk factor for poor outcome in SDHx mutants, although this marker should be replicated in large prospective cohorts, as well. ('SDH', 'Gene', '6390', (92, 95)) ('SDH', 'Gene', (92, 95)) ('mutants', 'Var', (97, 104)) 40620 33810219 In contrast to the previous study, this bioinformatical approach revealed underexpressed PTPRJ to be related to unfavorable prognosis. ('PTPRJ', 'Gene', (89, 94)) ('PTPRJ', 'Gene', '5795', (89, 94)) ('underexpressed', 'Var', (74, 88)) ('related', 'Reg', (101, 108)) 40624 33810219 It is also noteworthy that miR-483-5p, miR-195, and miR-34a were shown to be differentially expressed in adrenocortical cancer, as well. ('cancer', 'Phenotype', 'HP:0002664', (120, 126)) ('miR-483-5p', 'Chemical', '-', (27, 37)) ('miR-34a', 'Gene', '407040', (52, 59)) ('miR-34a', 'Gene', (52, 59)) ('adrenocortical cancer', 'Disease', (105, 126)) ('miR-483-5p', 'Var', (27, 37)) ('adrenocortical cancer', 'Disease', 'MESH:D000306', (105, 126)) ('miR-195', 'Gene', (39, 46)) ('miR-195', 'Gene', '406971', (39, 46)) 40629 33810219 Upregulated expression of miR-1225-3p has been found in sporadic recurrent pheochromocytomas in comparison to benign pheochromocytomas that raised its potential as a marker of PPGL recurrence. ('miR-1225-3p', 'Var', (26, 37)) ('pheochromocytomas', 'Disease', (75, 92)) ('benign pheochromocytomas', 'Disease', 'MESH:D010673', (110, 134)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (117, 133)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (117, 134)) ('pheochromocytomas', 'Disease', (117, 134)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (75, 92)) ('benign pheochromocytomas', 'Disease', (110, 134)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (75, 91)) ('expression', 'MPA', (12, 22)) ('Upregulated', 'PosReg', (0, 11)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (117, 134)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (75, 92)) ('PPGL', 'Chemical', '-', (176, 180)) 40632 33810219 The aforementioned recent ceRNA study also shed light on miR-148b-3p and miR-338-3p in respect of favorable prognosis and overall survival in PPGL. ('PPGL', 'Chemical', '-', (142, 146)) ('miR-338-3p', 'Var', (73, 83)) ('PPGL', 'Disease', (142, 146)) ('miR-148b-3p', 'Var', (57, 68)) 40635 33810219 Significantly altered expression of miR-101, miR-183, and miR-483-5p was revealed in metastatic pheochromocytoma tissues versus benign ones and validated by RT-qPCR. ('miR-483-5p', 'Chemical', '-', (58, 68)) ('miR-483-5p', 'Var', (58, 68)) ('altered', 'Reg', (14, 21)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (96, 112)) ('miR-101', 'Chemical', '-', (36, 43)) ('pheochromocytoma', 'Disease', (96, 112)) ('expression', 'MPA', (22, 32)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (96, 112)) ('miR-183', 'Gene', '406959', (45, 52)) ('miR-183', 'Gene', (45, 52)) ('miR-101', 'Gene', (36, 43)) 40636 33810219 Among them, miR-101 and miR-183 significantly differed in SDHB mutant vs. wild type samples and interestingly, miR-483-5p had significantly lower expression in SDHB mutant malignant pheochromocytoma compared to all other malignant pheochromocytomas. ('SDHB', 'Gene', (58, 62)) ('lower', 'NegReg', (140, 145)) ('SDHB', 'Gene', (160, 164)) ('miR-101', 'Chemical', '-', (12, 19)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (172, 198)) ('malignant pheochromocytomas', 'Disease', 'MESH:D010673', (221, 248)) ('expression', 'MPA', (146, 156)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (231, 248)) ('miR-483-5p', 'Chemical', '-', (111, 121)) ('malignant pheochromocytoma', 'Disease', (172, 198)) ('differed', 'Reg', (46, 54)) ('miR-183', 'Gene', '406959', (24, 31)) ('mutant', 'Var', (63, 69)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (221, 247)) ('SDHB', 'Gene', '6390', (58, 62)) ('malignant pheochromocytomas', 'Disease', (221, 248)) ('miR-183', 'Gene', (24, 31)) ('SDHB', 'Gene', '6390', (160, 164)) ('mutant', 'Var', (165, 171)) ('miR-483-5p', 'Var', (111, 121)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (231, 247)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (182, 198)) 40637 33810219 Furthermore, miR-101, miR-183, and miR-483-5p were measurable from serum samples, as well. ('miR-483-5p', 'Chemical', '-', (35, 45)) ('miR-183', 'Gene', '406959', (22, 29)) ('miR-183', 'Gene', (22, 29)) ('miR-483-5p', 'Var', (35, 45)) ('miR-101', 'Chemical', '-', (13, 20)) ('miR-101', 'Var', (13, 20)) 40638 33810219 In practice, this might raise the possibility that a patient without SDHB mutation might be screened for miR expression profile changes to assess the risk of malignancy. ('mutation', 'Var', (74, 82)) ('SDHB', 'Gene', (69, 73)) ('miR expression profile', 'MPA', (105, 127)) ('malignancy', 'Disease', (158, 168)) ('SDHB', 'Gene', '6390', (69, 73)) ('malignancy', 'Disease', 'MESH:D009369', (158, 168)) ('changes', 'Reg', (128, 135)) ('patient', 'Species', '9606', (53, 60)) 40639 33810219 In another study investigating snap-frozen samples, significantly higher expression of miR-483-5p in metastatic PPGL was found, as well, validated by RT-qPCR. ('PPGL', 'Chemical', '-', (112, 116)) ('miR-483-5p', 'Chemical', '-', (87, 97)) ('expression', 'MPA', (73, 83)) ('higher', 'PosReg', (66, 72)) ('miR-483-5p', 'Var', (87, 97)) 40645 33810219 Moreover, miR-483-5p is a marker of worse disease-free survival in metastatic pheochromocytoma. ('pheochromocytoma', 'Disease', (78, 94)) ('miR-483-5p', 'Chemical', '-', (10, 20)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (78, 94)) ('miR-483-5p', 'Var', (10, 20)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (78, 94)) 40647 33810219 When PPGL was compared with normal adrenal medullary tissues, overexpressed miR-210 was significantly associated with SDHx or VHL mutant genotypes known to exhibit the pseudohypoxia phenotype. ('VHL', 'Gene', '7428', (126, 129)) ('miR-210', 'Gene', (76, 83)) ('overexpressed', 'PosReg', (62, 75)) ('hypoxia', 'Disease', (174, 181)) ('PPGL', 'Chemical', '-', (5, 9)) ('hypoxia', 'Disease', 'MESH:D000860', (174, 181)) ('miR-210', 'Gene', '406992', (76, 83)) ('SDH', 'Gene', '6390', (118, 121)) ('associated', 'Interaction', (102, 112)) ('VHL', 'Gene', (126, 129)) ('SDH', 'Gene', (118, 121)) ('mutant', 'Var', (130, 136)) 40648 33810219 The aforementioned miR-96 and miR-183 were described to contribute to the differentiation block of cells of SDHB mutated tumors. ('SDHB', 'Gene', (108, 112)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('miR-183', 'Gene', '406959', (30, 37)) ('miR-183', 'Gene', (30, 37)) ('tumors', 'Disease', (121, 127)) ('miR-96', 'Gene', '407053', (19, 25)) ('tumors', 'Phenotype', 'HP:0002664', (121, 127)) ('miR-96', 'Gene', (19, 25)) ('tumors', 'Disease', 'MESH:D009369', (121, 127)) ('differentiation block of', 'CPA', (74, 98)) ('mutated', 'Var', (113, 120)) ('SDHB', 'Gene', '6390', (108, 112)) ('contribute', 'Reg', (56, 66)) 40654 33810219 Robust upregulation was identified with miR-96 especially in SDHB mutants. ('upregulation', 'PosReg', (7, 19)) ('mutants', 'Var', (66, 73)) ('SDHB', 'Gene', '6390', (61, 65)) ('miR-96', 'Gene', '407053', (40, 46)) ('miR-96', 'Gene', (40, 46)) ('SDHB', 'Gene', (61, 65)) 40661 33810219 Similar to UCA1, SOX6 also acts as a provoking factor in hypoxic injuries and inhibition of SOX6 leads to an ease of hypoxic injury (Figure 3). ('SOX6', 'Gene', (92, 96)) ('inhibition', 'Var', (78, 88)) ('hypoxic injuries', 'Disease', 'MESH:D002534', (57, 73)) ('hypoxic injury', 'Disease', (117, 131)) ('SOX6', 'Gene', '55553', (92, 96)) ('hypoxic injury', 'Disease', 'MESH:D002534', (117, 131)) ('SOX6', 'Gene', (17, 21)) ('SOX6', 'Gene', '55553', (17, 21)) ('ease', 'PosReg', (109, 113)) ('UCA1', 'Gene', '652995', (11, 15)) ('UCA1', 'Gene', (11, 15)) ('hypoxic injuries', 'Disease', (57, 73)) 40665 33810219 These include miR-483-5p, miR-195, and miR-34a. ('miR-34a', 'Gene', '407040', (39, 46)) ('miR-483-5p', 'Var', (14, 24)) ('miR-483-5p', 'Chemical', '-', (14, 24)) ('miR-34a', 'Gene', (39, 46)) ('miR-195', 'Gene', (26, 33)) ('miR-195', 'Gene', '406971', (26, 33)) 40674 33810219 The emerging role of non-coding RNA in the setting of clinical evaluation and therapeutic approaches of clinically challenging tumors is an attractive candidate for precision medicine. ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('tumors', 'Phenotype', 'HP:0002664', (127, 133)) ('tumors', 'Disease', (127, 133)) ('non-coding RNA', 'Var', (21, 35)) ('tumors', 'Disease', 'MESH:D009369', (127, 133)) 40680 33320109 Diagnosis was based on typical symptoms and signs in 58 patients, genetic testing in 12 and work-up of an adrenal incidentaloma in 9. ('patients', 'Species', '9606', (56, 64)) ('adrenal incidentaloma', 'Disease', (106, 127)) ('genetic testing', 'Var', (66, 81)) ('adrenal incidentaloma', 'Disease', 'MESH:C538238', (106, 127)) 40685 33320109 The occurrence of haemodynamic complications during surgery was not significantly affected by the secretory phenotype in our study, but noradrenergic tumours show a worse post-surgical outcome. ('tumours', 'Phenotype', 'HP:0002664', (150, 157)) ('noradrenergic', 'Var', (136, 149)) ('tumours', 'Disease', 'MESH:D009369', (150, 157)) ('tumours', 'Disease', (150, 157)) ('tumour', 'Phenotype', 'HP:0002664', (150, 156)) 40691 33320109 Over the last years, however, pheochromocytomas have been increasingly diagnosed during the work-up of an incidentally discovered adrenal mass or as a result of genetic case detection testing, as these tumours carry a very high rate of germline mutations, up to 35-40% in recent series. ('pheochromocytomas', 'Disease', 'MESH:D010673', (30, 47)) ('germline mutations', 'Var', (236, 254)) ('tumour', 'Phenotype', 'HP:0002664', (202, 208)) ('tumours', 'Phenotype', 'HP:0002664', (202, 209)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (30, 47)) ('tumours', 'Disease', 'MESH:D009369', (202, 209)) ('tumours', 'Disease', (202, 209)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (30, 46)) ('pheochromocytomas', 'Disease', (30, 47)) 40757 33320109 Patients with a noradrenergic PC showed less often normalisation of their blood pressure after surgery as opposed to patients with an adrenergic phenotype (P < 0.05; Table 2). ('normalisation', 'MPA', (51, 64)) ('noradrenergic', 'Var', (16, 29)) ('blood pressure', 'MPA', (74, 88)) ('PC', 'Phenotype', 'HP:0002666', (30, 32)) ('Patients', 'Species', '9606', (0, 8)) ('patients', 'Species', '9606', (117, 125)) ('PC', 'Gene', '5091', (30, 32)) 40773 33320109 In total, we found a pathogenic germline mutation in one-third of all index patients, a proportion similar to those reported by previous genetic studies on PPGL, ranging from 25 to 40% of patients. ('patients', 'Species', '9606', (76, 84)) ('PPGL', 'Chemical', '-', (156, 160)) ('germline mutation', 'Var', (32, 49)) ('patients', 'Species', '9606', (188, 196)) ('pathogenic', 'Reg', (21, 31)) 40881 33081307 When a mutation is detected in a susceptibility gene such as VHL, SDH, or the recently discovered MDH2, a search for common co-occurring tumors is indicated. ('MDH2', 'Gene', (98, 102)) ('tumors', 'Disease', (137, 143)) ('tumors', 'Disease', 'MESH:D009369', (137, 143)) ('SDH', 'Gene', '6390', (66, 69)) ('tumors', 'Phenotype', 'HP:0002664', (137, 143)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) ('SDH', 'Gene', (66, 69)) ('VHL', 'Gene', (61, 64)) ('mutation', 'Var', (7, 15)) ('VHL', 'Gene', '7428', (61, 64)) ('MDH2', 'Gene', '4191', (98, 102)) 40882 33081307 Mutation in the SDHB subunit is also associated with the risk for malignancy and worse prognosis. ('malignancy', 'Disease', 'MESH:D009369', (66, 76)) ('SDHB', 'Gene', '6390', (16, 20)) ('Mutation', 'Var', (0, 8)) ('SDHB', 'Gene', (16, 20)) ('malignancy', 'Disease', (66, 76)) ('associated', 'Reg', (37, 47)) 40883 33081307 In 50% of patients with metastatic disease, a mutation in the SDHB gene was found. ('found', 'Reg', (76, 81)) ('SDHB', 'Gene', '6390', (62, 66)) ('metastatic disease', 'Disease', (24, 42)) ('patients', 'Species', '9606', (10, 18)) ('mutation', 'Var', (46, 54)) ('SDHB', 'Gene', (62, 66)) 40891 33081307 PGLs are classified into three clusters by the Cancer Genome Atlas (TCGA) on the basis of molecular, cytogenetic abnormalities, and specific single-nucleotide causative mutations, which led to the development of PPGLs. ('Cancer', 'Disease', (47, 53)) ('led to', 'Reg', (186, 192)) ('Cancer', 'Disease', 'MESH:D009369', (47, 53)) ('PGL', 'Phenotype', 'HP:0002668', (213, 216)) ('Cancer', 'Phenotype', 'HP:0002664', (47, 53)) ('PGL', 'Phenotype', 'HP:0002668', (0, 3)) ('PPGLs', 'Chemical', '-', (212, 217)) ('single-nucleotide', 'Var', (141, 158)) ('PPGLs', 'Disease', (212, 217)) 40896 33081307 This group includes germline mutations in succinate dehydrogenase subunits SDHA, SDHB, SDHC, SDHD or SDHAF2 (SDHx):succinate dehydrogenase complex assembly factor 2, and FH (a second enzyme in the TCA cycle). ('SDHA', 'Gene', (75, 79)) ('succinate dehydrogenase', 'Gene', (42, 65)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', (115, 164)) ('SDHA', 'Gene', '6389', (75, 79)) ('SDHB', 'Gene', (81, 85)) ('SDH', 'Gene', (81, 84)) ('SDH', 'Gene', '6390', (87, 90)) ('SDHC', 'Gene', '6391', (87, 91)) ('SDH', 'Gene', '6390', (109, 112)) ('FH', 'Disease', 'MESH:D006938', (170, 172)) ('SDHD', 'Gene', '6392', (93, 97)) ('SDH', 'Gene', '6390', (93, 96)) ('succinate dehydrogenase', 'Gene', '6390', (42, 65)) ('mutations', 'Var', (29, 38)) ('SDH', 'Gene', '6390', (101, 104)) ('SDHA', 'Gene', (101, 105)) ('SDH', 'Gene', '6390', (75, 78)) ('TCA', 'Chemical', '-', (197, 200)) ('SDH', 'Gene', (87, 90)) ('succinate dehydrogenase', 'Gene', '6390', (115, 138)) ('SDHD', 'Gene', (93, 97)) ('SDHA', 'Gene', '6389', (101, 105)) ('SDH', 'Gene', (109, 112)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', '54949', (115, 164)) ('SDHC', 'Gene', (87, 91)) ('SDHB', 'Gene', '6390', (81, 85)) ('SDH', 'Gene', '6390', (81, 84)) ('SDHAF2', 'Gene', '54949', (101, 107)) ('SDHAF2', 'Gene', (101, 107)) ('SDH', 'Gene', (101, 104)) ('SDH', 'Gene', (93, 96)) ('SDH', 'Gene', (75, 78)) 40900 33081307 A pseudo-hypoxic state is caused by the presence of abnormal, mutated VHL, SDH, EGLN1, and HIF2A genes. ('VHL', 'Gene', (70, 73)) ('pseudo-hypoxic state', 'Disease', (2, 22)) ('VHL', 'Gene', '7428', (70, 73)) ('presence', 'Reg', (40, 48)) ('EGLN1', 'Gene', '54583', (80, 85)) ('HIF2A', 'Gene', (91, 96)) ('caused by', 'Reg', (26, 35)) ('abnormal', 'Var', (52, 60)) ('SDH', 'Gene', '6390', (75, 78)) ('EGLN1', 'Gene', (80, 85)) ('SDH', 'Gene', (75, 78)) ('HIF2A', 'Gene', '2034', (91, 96)) ('mutated', 'Var', (62, 69)) 40903 33081307 The Wnt signaling cluster is another group that are, in particular, triggered by somatic mutations in the CSDE1 gene or somatic gene fusions which affect the MAML3 gene. ('CSDE1', 'Gene', '7812', (106, 111)) ('triggered', 'Reg', (68, 77)) ('MAML3', 'Gene', '55534', (158, 163)) ('MAML3', 'Gene', (158, 163)) ('fusions', 'Var', (133, 140)) ('mutations', 'Var', (89, 98)) ('CSDE1', 'Gene', (106, 111)) 40906 33081307 The kinase signaling cluster (50-60% of PPGLs) includes germline or somatic mutations in RET, NF1, MAX, HRAS, and TMEM127 genes. ('NF1', 'Gene', '4763', (94, 97)) ('mutations', 'Var', (76, 85)) ('RET', 'Gene', (89, 92)) ('TMEM127', 'Gene', (114, 121)) ('PPGLs', 'Chemical', '-', (40, 45)) ('HRAS', 'Gene', (104, 108)) ('TMEM127', 'Gene', '55654', (114, 121)) ('PGL', 'Phenotype', 'HP:0002668', (41, 44)) ('RET', 'Gene', '5979', (89, 92)) ('MAX', 'Gene', (99, 102)) ('NF1', 'Gene', (94, 97)) ('HRAS', 'Gene', '3265', (104, 108)) 40907 33081307 The RAS/MAPK and PI3/AKT signaling pathways are enabled due to RET proto-oncogene activation or NF1 tumor suppressor inactivation, resulting in tumor formation. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('tumor', 'Disease', (144, 149)) ('enabled', 'PosReg', (48, 55)) ('RET', 'Gene', '5979', (63, 66)) ('tumor', 'Disease', (100, 105)) ('inactivation', 'Var', (117, 129)) ('PI3', 'Gene', '5266', (17, 20)) ('AKT', 'Gene', '207', (21, 24)) ('RET', 'Gene', (63, 66)) ('tumor', 'Disease', 'MESH:D009369', (144, 149)) ('PI3', 'Gene', (17, 20)) ('NF1', 'Gene', (96, 99)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) ('tumor', 'Disease', 'MESH:D009369', (100, 105)) ('AKT', 'Gene', (21, 24)) ('NF1', 'Gene', '4763', (96, 99)) 40908 33081307 In contrast, TMEM127 mutations trigger the mTOR pathways. ('TMEM127', 'Gene', '55654', (13, 20)) ('mTOR', 'Gene', (43, 47)) ('mTOR', 'Gene', '2475', (43, 47)) ('trigger', 'Reg', (31, 38)) ('TMEM127', 'Gene', (13, 20)) ('mutations', 'Var', (21, 30)) 40909 33081307 Another mechanism includes deactivation of the MAX suppressor gene, causing an abnormally elevated expression of cofactor MYC (proto-oncogene), resulting in the formation of PPGLs. ('expression', 'MPA', (99, 109)) ('elevated', 'PosReg', (90, 98)) ('formation', 'MPA', (161, 170)) ('PPGLs', 'MPA', (174, 179)) ('PGL', 'Phenotype', 'HP:0002668', (175, 178)) ('PPGLs', 'Chemical', '-', (174, 179)) ('deactivation', 'Var', (27, 39)) ('MAX suppressor gene', 'Gene', (47, 66)) 40914 33081307 They are caused by mutations in the succinate dehydrogenase (SDH) complex, which is necessary for the mitochondrial electron transport chain and ATP generation. ('caused by', 'Reg', (9, 18)) ('SDH', 'Gene', (61, 64)) ('mutations', 'Var', (19, 28)) ('ATP', 'Chemical', 'MESH:D000255', (145, 148)) ('SDH', 'Gene', '6390', (61, 64)) ('succinate dehydrogenase', 'Gene', (36, 59)) ('succinate dehydrogenase', 'Gene', '6390', (36, 59)) 40918 33081307 It is correlated with inactivating mutations of the SDHD gene localized on chromosome 11q23. ('SDHD', 'Gene', '6392', (52, 56)) ('SDHD', 'Gene', (52, 56)) ('inactivating mutations', 'Var', (22, 44)) 40921 33081307 SDHD mutations are also associated with maternal genomic imprinting. ('associated', 'Reg', (24, 34)) ('mutations', 'Var', (5, 14)) ('SDHD', 'Gene', '6392', (0, 4)) ('maternal genomic imprinting', 'CPA', (40, 67)) ('SDHD', 'Gene', (0, 4)) 40922 33081307 Tumors are more likely to develop in children if the father is affected or a mutation carrier himself. ('mutation', 'Var', (77, 85)) ('children', 'Species', '9606', (37, 45)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) 40926 33081307 PGLs typically produce catecholamines such as dopamine and norepinephrine, and only 10% of SDHB mutated tumors are biochemically silent; however, the clinical consequences are generally the result of significant mass effect rather than catecholamine excess. ('mutated', 'Var', (96, 103)) ('catecholamines', 'Chemical', 'MESH:D002395', (23, 37)) ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (236, 256)) ('dopamine', 'MPA', (46, 54)) ('SDHB', 'Gene', '6390', (91, 95)) ('tumors', 'Phenotype', 'HP:0002664', (104, 110)) ('produce catecholamines', 'MPA', (15, 37)) ('norepinephrine', 'MPA', (59, 73)) ('PGL', 'Phenotype', 'HP:0002668', (0, 3)) ('tumors', 'Disease', (104, 110)) ('dopamine', 'Chemical', 'MESH:D004298', (46, 54)) ('norepinephrine', 'Chemical', 'MESH:D009638', (59, 73)) ('SDHB', 'Gene', (91, 95)) ('tumors', 'Disease', 'MESH:D009369', (104, 110)) ('catecholamine', 'Chemical', 'MESH:D002395', (23, 36)) ('catecholamine', 'Chemical', 'MESH:D002395', (236, 249)) 40928 33081307 The SDHB gene mutation increases the risk of renal cell carcinoma, gastrointestinal stromal tumor (GIST), and breast and papillary thyroid carcinoma, and while patients with metastatic disease should be routinely tested for the presence of the predisposing SDHB mutation, there are no guidelines regarding the screening of asymptomatic SDHx gene mutation carriers. ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (67, 97)) ('SDH', 'Gene', (257, 260)) ('SDH', 'Gene', (4, 7)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (67, 97)) ('carcinoma', 'Phenotype', 'HP:0030731', (56, 65)) ('SDH', 'Gene', (336, 339)) ('gastrointestinal stromal tumor', 'Disease', (67, 97)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('SDHB', 'Gene', '6390', (257, 261)) ('SDHB', 'Gene', '6390', (4, 8)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (45, 65)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (131, 148)) ('GIST', 'Phenotype', 'HP:0100723', (99, 103)) ('SDHB', 'Gene', (257, 261)) ('SDHB', 'Gene', (4, 8)) ('increases', 'PosReg', (23, 32)) ('SDH', 'Gene', '6390', (257, 260)) ('SDH', 'Gene', '6390', (4, 7)) ('patients', 'Species', '9606', (160, 168)) ('breast and papillary thyroid carcinoma', 'Disease', 'MESH:D001943', (110, 148)) ('papillary thyroid carcinoma', 'Phenotype', 'HP:0002895', (121, 148)) ('carcinoma', 'Phenotype', 'HP:0030731', (139, 148)) ('mutation', 'Var', (14, 22)) ('renal cell carcinoma', 'Disease', (45, 65)) ('SDH', 'Gene', '6390', (336, 339)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (45, 65)) 40930 33081307 PGL3 syndrome is caused by an SDHC gene mutation located on 1q21-q23 and is inherited in an autosomal dominant pattern. ('SDHC', 'Gene', (30, 34)) ('mutation', 'Var', (40, 48)) ('PGL3', 'Gene', '6391', (0, 4)) ('PGL', 'Phenotype', 'HP:0002668', (0, 3)) ('SDHC', 'Gene', '6391', (30, 34)) ('PGL3', 'Gene', (0, 4)) ('caused by', 'Reg', (17, 26)) 40933 33081307 Mutations in the SDHAF2 gene have also been recently reported. ('SDHAF2', 'Gene', (17, 23)) ('Mutations', 'Var', (0, 9)) ('SDHAF2', 'Gene', '54949', (17, 23)) 40934 33081307 SDHAF2 mutation results in a rare type of familial paraganglioma syndrome that leads to HNPGL, but only in the children of a father who is a carrier of the defective gene. ('familial paraganglioma syndrome', 'Disease', (42, 73)) ('HNPGL', 'Disease', (88, 93)) ('SDHAF2', 'Gene', '54949', (0, 6)) ('leads', 'Reg', (79, 84)) ('results in', 'Reg', (16, 26)) ('SDHAF2', 'Gene', (0, 6)) ('children', 'Species', '9606', (111, 119)) ('familial paraganglioma syndrome', 'Disease', 'MESH:D010235', (42, 73)) ('HNPGL', 'Phenotype', 'HP:0002864', (88, 93)) ('paraganglioma', 'Phenotype', 'HP:0002668', (51, 64)) ('mutation', 'Var', (7, 15)) ('PGL', 'Phenotype', 'HP:0002668', (90, 93)) 40935 33081307 Genetic screening of SDHAF2 mutation is crucial in patients with HNPGL with suspicious family history, young age of onset, or multiple tumors and have already tested negative for SDHB, SDHC, and SDHD mutations. ('SDHAF2', 'Gene', '54949', (21, 27)) ('PGL', 'Phenotype', 'HP:0002668', (67, 70)) ('HNPGL', 'Phenotype', 'HP:0002864', (65, 70)) ('SDHAF2', 'Gene', (21, 27)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('SDHC', 'Gene', (185, 189)) ('HNPGL', 'Disease', (65, 70)) ('SDHB', 'Gene', '6390', (179, 183)) ('mutation', 'Var', (28, 36)) ('tumors', 'Disease', (135, 141)) ('SDHD', 'Gene', (195, 199)) ('patients', 'Species', '9606', (51, 59)) ('tumors', 'Disease', 'MESH:D009369', (135, 141)) ('SDHD', 'Gene', '6392', (195, 199)) ('SDHB', 'Gene', (179, 183)) ('SDHC', 'Gene', '6391', (185, 189)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) 40938 33081307 Inactivation of tumor-suppressor genes (TSGs) is caused by overall DNA hypomethylation and hypermethylation of CpG islands located in the closest vicinity of the promoter. ('tumor-suppressor', 'Gene', '7248', (16, 32)) ('tumor-suppressor', 'Gene', (16, 32)) ('tumor', 'Phenotype', 'HP:0002664', (16, 21)) ('hypermethylation', 'Var', (91, 107)) ('Inactivation', 'NegReg', (0, 12)) ('hypomethylation', 'Var', (71, 86)) 40939 33081307 In a study by Chen et al., the methylation status of a panel of TSGs (p16, HIC1, DcR1, DcR2, DR4, DR5, CASP8, HSP47, MGMT, and RASSF1A) has been determined and compared in HNPGLs with and without SDH mutations. ('HSP47', 'Gene', (110, 115)) ('HIC1', 'Gene', (75, 79)) ('HNPGL', 'Phenotype', 'HP:0002864', (172, 177)) ('MGMT', 'Gene', (117, 121)) ('mutations', 'Var', (200, 209)) ('p16', 'Gene', '1029', (70, 73)) ('PGL', 'Phenotype', 'HP:0002668', (174, 177)) ('CASP8', 'Gene', '841', (103, 108)) ('DR5', 'Gene', (98, 101)) ('DR4', 'Gene', (93, 96)) ('HIC1', 'Gene', '3090', (75, 79)) ('HSP47', 'Gene', '871', (110, 115)) ('CASP8', 'Gene', (103, 108)) ('DcR2', 'Gene', '8793', (87, 91)) ('HNPGLs', 'Disease', (172, 178)) ('SDH', 'Gene', '6390', (196, 199)) ('DcR1', 'Gene', '23405', (81, 85)) ('MGMT', 'Gene', '4255', (117, 121)) ('DcR2', 'Gene', (87, 91)) ('DR4', 'Gene', '3126', (93, 96)) ('RASSF1A', 'Gene', '11186', (127, 134)) ('RASSF1A', 'Gene', (127, 134)) ('methylation', 'MPA', (31, 42)) ('SDH', 'Gene', (196, 199)) ('p16', 'Gene', (70, 73)) ('DR5', 'Gene', '8795', (98, 101)) ('DcR1', 'Gene', (81, 85)) 40940 33081307 Six out of 10 TSGs showed frequent methylation: HIC1 and those involved in the apoptosis pathway DcR1, DcR2, DR4, DR5, and CASPS8. ('DR5', 'Gene', (114, 117)) ('DcR1', 'Gene', (97, 101)) ('DcR2', 'Gene', (103, 107)) ('DR5', 'Gene', '8795', (114, 117)) ('DR4', 'Gene', (109, 112)) ('HIC1', 'Gene', '3090', (48, 52)) ('HIC1', 'Gene', (48, 52)) ('DcR1', 'Gene', '23405', (97, 101)) ('methylation', 'Var', (35, 46)) ('DR4', 'Gene', '3126', (109, 112)) ('DcR2', 'Gene', '8793', (103, 107)) 40943 33081307 It may provide a better understanding of the crucial role of the mutations acquired on various level of disease development, as well as those underlying the carcinogenesis of HNPGLs. ('carcinogenesis of HNPGLs', 'Disease', 'MESH:D063646', (157, 181)) ('carcinogenesis of HNPGLs', 'Disease', (157, 181)) ('PGL', 'Phenotype', 'HP:0002668', (177, 180)) ('mutations', 'Var', (65, 74)) ('HNPGL', 'Phenotype', 'HP:0002864', (175, 180)) 40944 33081307 analyzed 50 "mutation hotspot" variants in PCC and PGL using NGS in 20 patients with HNPGL and 85 patients with PPGL. ('PCC', 'Gene', (43, 46)) ('PGL', 'Gene', (51, 54)) ('variants', 'Var', (31, 39)) ('PGL', 'Phenotype', 'HP:0002668', (113, 116)) ('patients', 'Species', '9606', (71, 79)) ('PPGL', 'Chemical', '-', (112, 116)) ('patients', 'Species', '9606', (98, 106)) ('PCC', 'Phenotype', 'HP:0002666', (43, 46)) ('PGL', 'Phenotype', 'HP:0002668', (87, 90)) ('PGL', 'Phenotype', 'HP:0002668', (51, 54)) ('HNPGL', 'Phenotype', 'HP:0002864', (85, 90)) 40945 33081307 The authors identified mutations in HRAS (7.1%), and BRAF (1.2%) as well as for TP53 in 2.35% of cases. ('BRAF', 'Gene', '673', (53, 57)) ('BRAF', 'Gene', (53, 57)) ('TP53', 'Gene', '7157', (80, 84)) ('HRAS', 'Gene', '3265', (36, 40)) ('TP53', 'Gene', (80, 84)) ('mutations', 'Var', (23, 32)) ('HRAS', 'Gene', (36, 40)) 40946 33081307 In the group of PPGL tumors with identified hereditary mutations (21 cases), HRAS, BRAF, and TP53 genes were not mutated. ('mutations', 'Var', (55, 64)) ('PPGL tumors', 'Disease', (16, 27)) ('TP53', 'Gene', '7157', (93, 97)) ('TP53', 'Gene', (93, 97)) ('PGL', 'Phenotype', 'HP:0002668', (17, 20)) ('tumors', 'Phenotype', 'HP:0002664', (21, 27)) ('HRAS', 'Gene', '3265', (77, 81)) ('BRAF', 'Gene', '673', (83, 87)) ('PPGL tumors', 'Disease', 'MESH:D009369', (16, 27)) ('HRAS', 'Gene', (77, 81)) ('BRAF', 'Gene', (83, 87)) ('tumor', 'Phenotype', 'HP:0002664', (21, 26)) 40947 33081307 It was concluded that the occurrence of HRAS/BRAF mutations predominates in sporadic PPGL (8.9%) but is inconsequential for inherited PPGL. ('mutations', 'Var', (50, 59)) ('HRAS', 'Gene', '3265', (40, 44)) ('PPGL', 'Disease', (85, 89)) ('BRAF', 'Gene', (45, 49)) ('BRAF', 'Gene', '673', (45, 49)) ('PPGL', 'Chemical', '-', (134, 138)) ('PPGL', 'Chemical', '-', (85, 89)) ('PGL', 'Phenotype', 'HP:0002668', (86, 89)) ('HRAS', 'Gene', (40, 44)) ('PGL', 'Phenotype', 'HP:0002668', (135, 138)) 40955 33081307 An agreement in the literature on the selection of mutations in HNPGL has been drawn, and encompasses the following genes: SDHA, SDHB, SDHD, SDHAF2, SDHC, SDHB, VHL, FH, RET. ('mutations', 'Var', (51, 60)) ('SDHC', 'Gene', (149, 153)) ('SDHD', 'Gene', '6392', (135, 139)) ('RET', 'Gene', (170, 173)) ('HNPGL', 'Gene', (64, 69)) ('SDHB', 'Gene', '6390', (155, 159)) ('SDHB', 'Gene', '6390', (129, 133)) ('SDHD', 'Gene', (135, 139)) ('SDHAF2', 'Gene', '54949', (141, 147)) ('SDHAF2', 'Gene', (141, 147)) ('SDHA', 'Gene', (141, 145)) ('VHL', 'Gene', (161, 164)) ('PGL', 'Phenotype', 'HP:0002668', (66, 69)) ('HNPGL', 'Phenotype', 'HP:0002864', (64, 69)) ('SDHA', 'Gene', (123, 127)) ('SDHA', 'Gene', '6389', (141, 145)) ('SDHC', 'Gene', '6391', (149, 153)) ('SDHB', 'Gene', (155, 159)) ('SDHB', 'Gene', (129, 133)) ('RET', 'Gene', '5979', (170, 173)) ('SDHA', 'Gene', '6389', (123, 127)) ('FH', 'Disease', 'MESH:D006938', (166, 168)) ('VHL', 'Gene', '7428', (161, 164)) 41051 32793409 Similar to other types of spinal metastases, the location of the spinal cord injury in MSP cases determines the type of neurological deficit, while lesions in the thoracolumbar regions are often manifested as low back pain, lower extremity sensory abnormality, weakness, and dysuria. ('dysuria', 'Disease', 'MESH:D053159', (275, 282)) ('dysuria', 'Phenotype', 'HP:0100518', (275, 282)) ('pain', 'Phenotype', 'HP:0012531', (218, 222)) ('low back pain', 'Phenotype', 'HP:0003419', (209, 222)) ('back pain', 'Disease', (213, 222)) ('spinal metastases', 'Disease', (26, 43)) ('neurological deficit', 'Disease', 'MESH:D009461', (120, 140)) ('weakness', 'Disease', 'MESH:D018908', (261, 269)) ('extremity sensory abnormality', 'Disease', (230, 259)) ('extremity sensory abnormality', 'Disease', 'MESH:D012678', (230, 259)) ('dysuria', 'Disease', (275, 282)) ('lower extremity', 'Phenotype', 'HP:0006385', (224, 239)) ('spinal metastases', 'Disease', 'MESH:D009362', (26, 43)) ('weakness', 'Disease', (261, 269)) ('neurological deficit', 'Disease', (120, 140)) ('back pain', 'Phenotype', 'HP:0003418', (213, 222)) ('back pain', 'Disease', 'MESH:D001416', (213, 222)) ('spinal cord injury', 'Disease', (65, 83)) ('lesions', 'Var', (148, 155)) ('neurological deficit', 'Phenotype', 'HP:0000707', (120, 140)) ('spinal cord injury', 'Disease', 'MESH:D013119', (65, 83)) 41056 32793409 In addition, genetic analysis can further assist in the diagnosis of pheochromocytoma. ('genetic analysis', 'Var', (13, 29)) ('pheochromocytoma', 'Disease', (69, 85)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (69, 85)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (69, 85)) 41122 31750236 On the other hand, lithium can also cause damage to the thyroid cell with consequent signs and symptoms of thyroiditis. ('thyroiditis', 'Disease', 'MESH:D013959', (107, 118)) ('cause', 'Reg', (36, 41)) ('lithium', 'Var', (19, 26)) ('lithium', 'Chemical', 'MESH:D008094', (19, 26)) ('damage', 'MPA', (42, 48)) ('thyroiditis', 'Disease', (107, 118)) ('thyroiditis', 'Phenotype', 'HP:0100646', (107, 118)) 41124 31750236 Lithium was found to increase the intrathyroidal iodine content as well as to inhibit release of thyroid hormones from the thyroid into the circulation due to altered tubulin polymerization in thyrocytes. ('Lithium', 'Chemical', 'MESH:D008094', (0, 7)) ('tubulin polymerization', 'MPA', (167, 189)) ('increase the intrathyroidal iodine content', 'Phenotype', 'HP:0031220', (21, 63)) ('inhibit release of thyroid hormones', 'Phenotype', 'HP:0002930', (78, 113)) ('altered', 'Reg', (159, 166)) ('rat', 'Species', '10116', (37, 40)) ('iodine', 'Chemical', 'MESH:D007455', (49, 55)) ('inhibit', 'NegReg', (78, 85)) ('intrathyroidal iodine content', 'MPA', (34, 63)) ('Lithium', 'Var', (0, 7)) ('increase', 'PosReg', (21, 29)) 41130 31750236 Functional in vitro models revealed that Wnt/beta-catenin signaling may be important in lithium-associated goiter, as lithium significantly increased human thyrocyte proliferation mediated by Wnt/beta-catenin pathway. ('human', 'Species', '9606', (150, 155)) ('lithium', 'Var', (118, 125)) ('beta-catenin', 'Gene', '1499', (196, 208)) ('rat', 'Species', '10116', (173, 176)) ('lithium', 'Chemical', 'MESH:D008094', (118, 125)) ('goiter', 'Disease', (107, 113)) ('beta-catenin', 'Gene', '1499', (45, 57)) ('goiter', 'Disease', 'MESH:D006042', (107, 113)) ('goiter', 'Phenotype', 'HP:0000853', (107, 113)) ('human thyrocyte proliferation', 'CPA', (150, 179)) ('lithium', 'Chemical', 'MESH:D008094', (88, 95)) ('lithium-associated', 'Disease', (88, 106)) ('increased', 'PosReg', (140, 149)) ('beta-catenin', 'Gene', (45, 57)) ('beta-catenin', 'Gene', (196, 208)) 41154 31750236 analyzed the role of lithium in a rat follicular cell line intrinsically expressing NIS (FRTL5), and a follicular thyroid cancer cell line FTC133 stably transfected with NIS. ('follicular thyroid cancer', 'Phenotype', 'HP:0006731', (103, 128)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (114, 128)) ('FTC', 'Disease', 'MESH:C572845', (139, 142)) ('NIS', 'Var', (84, 87)) ('follicular thyroid cancer', 'Disease', 'MESH:C572845', (103, 128)) ('FTC', 'Disease', (139, 142)) ('FTC', 'Phenotype', 'HP:0006731', (139, 142)) ('rat', 'Species', '10116', (34, 37)) ('lithium', 'Chemical', 'MESH:D008094', (21, 28)) ('cancer', 'Phenotype', 'HP:0002664', (122, 128)) ('follicular thyroid cancer', 'Disease', (103, 128)) ('TC', 'Phenotype', 'HP:0002890', (140, 142)) 41192 31750236 The overall survival was significantly better in lithium-aided RAI treated patients, but the analysis was not adjusted by other factors affecting the outcome such as age, number, and location of metastatic foci. ('RAI', 'Chemical', 'MESH:D007455', (63, 66)) ('lithium-aided', 'Var', (49, 62)) ('patients', 'Species', '9606', (75, 83)) ('lithium', 'Chemical', 'MESH:D008094', (49, 56)) ('better', 'PosReg', (39, 45)) 41218 31750236 TBX1 deficiency may potentially contribute to the low proliferative index of parathyroid tumors. ('TBX1', 'Gene', '6899', (0, 4)) ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('low', 'NegReg', (50, 53)) ('TBX1', 'Gene', (0, 4)) ('deficiency', 'Var', (5, 15)) ('parathyroid tumors', 'Disease', 'MESH:D010282', (77, 95)) ('rat', 'Species', '10116', (61, 64)) ('parathyroid tumors', 'Disease', (77, 95)) ('proliferative index', 'MPA', (54, 73)) ('rat', 'Species', '10116', (79, 82)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) 41221 31750236 To summarize, pre-clinical in vitro studies consistently show that lithium induces proliferation and PTH secretion in parathyroid cells (Table 1). ('PTH', 'Gene', '5741', (101, 104)) ('proliferation', 'CPA', (83, 96)) ('lithium', 'Var', (67, 74)) ('lithium', 'Chemical', 'MESH:D008094', (67, 74)) ('rat', 'Species', '10116', (120, 123)) ('PTH', 'Gene', (101, 104)) ('rat', 'Species', '10116', (90, 93)) 41291 30112225 We report the case of a 65-year-old man known for hypertension, cholelithiasis, and panic disorder with no personal or family history of pheochromocytoma, paraganglioma, Multiple Endocrine Neoplasia Type 2 syndrome, Von Hippel Lindau syndrome, Neurofibromatosis Type 1, or Succinyl Dehydrogenase mutations. ('Multiple Endocrine Neoplasia Type 2 syndrome', 'Disease', 'MESH:D018813', (170, 214)) ('panic disorder', 'Phenotype', 'HP:0025269', (84, 98)) ('cholelithiasis', 'Disease', (64, 78)) ('hypertension', 'Disease', 'MESH:D006973', (50, 62)) ('Von Hippel Lindau syndrome', 'Disease', 'MESH:D006623', (216, 242)) ('paraganglioma', 'Disease', (155, 168)) ('hypertension', 'Disease', (50, 62)) ('paraganglioma', 'Disease', 'MESH:D010235', (155, 168)) ('panic disorder', 'Disease', (84, 98)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (137, 153)) ('Endocrine Neoplasia', 'Phenotype', 'HP:0100568', (179, 198)) ('hypertension', 'Phenotype', 'HP:0000822', (50, 62)) ('panic disorder', 'Disease', 'MESH:D016584', (84, 98)) ('cholelithiasis', 'Phenotype', 'HP:0001081', (64, 78)) ('Multiple Endocrine Neoplasia Type 2 syndrome', 'Disease', (170, 214)) ('pheochromocytoma', 'Disease', (137, 153)) ('paraganglioma', 'Phenotype', 'HP:0002668', (155, 168)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (137, 153)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (244, 261)) ('cholelithiasis', 'Disease', 'MESH:D002769', (64, 78)) ('Von Hippel Lindau syndrome', 'Disease', (216, 242)) ('man', 'Species', '9606', (36, 39)) ('person', 'Species', '9606', (107, 113)) ('Neurofibromatosis Type 1', 'Gene', '4763', (244, 268)) ('Neurofibromatosis Type 1', 'Gene', (244, 268)) ('Neoplasia', 'Phenotype', 'HP:0002664', (189, 198)) ('mutations', 'Var', (296, 305)) 41429 27709415 Although mouse models, rodent pheochromocytoma cell lines and other cell lines have yielded important information, there is no model representing both the genotype and the fully developed phenotypes of actual tumors that are most likely to metastasize or cause local morbidity, particularly tumors that occur in patients with germline mutations of the SDHB gene, which encodes a subunit of succinate dehydrogenase. ('metastasize', 'CPA', (240, 251)) ('tumors', 'Disease', 'MESH:D009369', (209, 215)) ('SDHB', 'Gene', (352, 356)) ('cause', 'Reg', (255, 260)) ('tumors', 'Phenotype', 'HP:0002664', (291, 297)) ('tumor', 'Phenotype', 'HP:0002664', (291, 296)) ('pheochromocytoma cell lines', 'Disease', 'MESH:D010673', (30, 57)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (30, 46)) ('tumors', 'Disease', (291, 297)) ('tumors', 'Phenotype', 'HP:0002664', (209, 215)) ('patients', 'Species', '9606', (312, 320)) ('actual tumors', 'Disease', (202, 215)) ('tumor', 'Phenotype', 'HP:0002664', (209, 214)) ('tumors', 'Disease', 'MESH:D009369', (291, 297)) ('tumors', 'Disease', (209, 215)) ('pheochromocytoma cell lines', 'Disease', (30, 57)) ('germline mutations', 'Var', (326, 344)) ('mouse', 'Species', '10090', (9, 14)) ('actual tumors', 'Disease', 'MESH:D009369', (202, 215)) 41445 27709415 For comparison to sections of the intact tumor tissue, sections were stained immunohistochemically with antibodies directed against chromogranin A (CgA) (# LK2H10, Ventana, pre-diluted), S100 (# 4C4.9, Ventana, pre-diluted), Ki 67 (# 30.9, Ventana, pre-diluted), tyrosine hydroxylase (TH) (#22941, Immunostar, 1:4000), and succinate dehydrogenase B (SDHB)(#HP0028668, Sigma). ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('chromogranin A', 'Gene', '1113', (132, 146)) ('CgA', 'Gene', (148, 151)) ('tumor', 'Disease', (41, 46)) ('chromogranin A', 'Gene', (132, 146)) ('tyrosine hydroxylase', 'Gene', '7054', (263, 283)) ('succinate dehydrogenase B', 'Gene', (323, 348)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) ('CgA', 'Gene', '1113', (148, 151)) ('TH', 'Gene', '7054', (285, 287)) ('succinate dehydrogenase B', 'Gene', '6390', (323, 348)) ('#22941', 'Var', (290, 296)) ('SDHB', 'Gene', (350, 354)) ('tyrosine hydroxylase', 'Gene', (263, 283)) 41488 26170485 Three patients (6%) demonstrated tumour development, one in a patient with VHL which occurred in a contralateral adrenal gland, one sporadic case had local recurrence, and an adrenal tumour occurred in a patient with a SDHB gene mutation who had a previous bladder tumour. ('VHL', 'Disease', (75, 78)) ('patients', 'Species', '9606', (6, 14)) ('bladder tumour', 'Disease', (257, 271)) ('patient', 'Species', '9606', (62, 69)) ('tumour', 'Phenotype', 'HP:0002664', (265, 271)) ('adrenal tumour', 'Disease', 'MESH:D000310', (175, 189)) ('tumour', 'Disease', 'MESH:D009369', (265, 271)) ('SDHB', 'Gene', '6390', (219, 223)) ('tumour', 'Phenotype', 'HP:0002664', (33, 39)) ('tumour', 'Disease', 'MESH:D009369', (33, 39)) ('VHL', 'Disease', 'MESH:D006623', (75, 78)) ('tumour', 'Disease', (265, 271)) ('tumour', 'Disease', (33, 39)) ('bladder tumour', 'Phenotype', 'HP:0009725', (257, 271)) ('patient', 'Species', '9606', (6, 13)) ('tumour', 'Phenotype', 'HP:0002664', (183, 189)) ('tumour', 'Disease', 'MESH:D009369', (183, 189)) ('SDHB', 'Gene', (219, 223)) ('patient', 'Species', '9606', (204, 211)) ('mutation', 'Var', (229, 237)) ('adrenal tumour', 'Disease', (175, 189)) ('tumour', 'Disease', (183, 189)) ('bladder tumour', 'Disease', 'MESH:D001749', (257, 271)) 41520 26170485 Contralateral adrenal tumour developed in one patient with VHL, in another with presumed sporadic phaeochromocytoma local tumour was present (in this patient a regional lymph node was inaccessible on initial surgery), the third patient with an SDHB mutation developed tumour growth in an adrenal gland, the original site of which was the bladder. ('tumour', 'Disease', 'MESH:D009369', (22, 28)) ('tumour', 'Disease', (22, 28)) ('VHL', 'Disease', (59, 62)) ('tumour', 'Phenotype', 'HP:0002664', (268, 274)) ('tumour', 'Disease', 'MESH:D009369', (268, 274)) ('SDHB', 'Gene', '6390', (244, 248)) ('tumour', 'Phenotype', 'HP:0002664', (122, 128)) ('mutation', 'Var', (249, 257)) ('tumour', 'Disease', 'MESH:D009369', (122, 128)) ('tumour', 'Disease', (268, 274)) ('patient', 'Species', '9606', (150, 157)) ('tumour', 'Disease', (122, 128)) ('developed', 'Reg', (258, 267)) ('SDHB', 'Gene', (244, 248)) ('patient', 'Species', '9606', (228, 235)) ('Contralateral adrenal tumour', 'Disease', 'MESH:D000310', (0, 28)) ('patient', 'Species', '9606', (46, 53)) ('phaeochromocytoma local tumour', 'Disease', (98, 128)) ('VHL', 'Disease', 'MESH:D006623', (59, 62)) ('phaeochromocytoma local tumour', 'Disease', 'MESH:D009364', (98, 128)) ('Contralateral adrenal tumour', 'Disease', (0, 28)) ('tumour', 'Phenotype', 'HP:0002664', (22, 28)) 41528 26170485 In our own previous series of adrenalectomies (8 of 50 for phaeochromocytoma) and in keeping with other similar studies, laparoscopic adrenalectomy in comparison to open adrenalectomy resulted in a significantly shorter hospital stay and less post-operative morbidity, although operating time was longer. ('shorter', 'NegReg', (212, 219)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (59, 76)) ('laparoscopic', 'Var', (121, 133)) ('phaeochromocytoma', 'Disease', (59, 76)) ('hospital stay', 'MPA', (220, 233)) 41530 26170485 In the current study we have demonstrated tumour development in 6% in patients in whom phaeochromocytoma and abdominal parganglioma had been surgically removed, it is arguable that genuine local recurrence in our study occurred in only one patient, in the remaining two patients who had tumour development after initial surgery; one with VHL and the other with an SDHB mutation, could possibly be explained by the increased clinical incidence of bilateral phaeochromocytomas (around 40-60%) in patients with VHL, and that patients with SDHB mutations have an increased risk of the development of multi-focal phaeochromocytomas. ('patient', 'Species', '9606', (494, 501)) ('VHL', 'Disease', 'MESH:D006623', (508, 511)) ('patient', 'Species', '9606', (240, 247)) ('SDHB', 'Gene', '6390', (364, 368)) ('phaeochromocytoma', 'Disease', (608, 625)) ('mutations', 'Var', (541, 550)) ('phaeochromocytoma', 'Disease', (456, 473)) ('multi-focal phaeochromocytomas', 'Disease', (596, 626)) ('abdominal parganglioma', 'Disease', 'MESH:D015746', (109, 131)) ('patients', 'Species', '9606', (522, 530)) ('patient', 'Species', '9606', (270, 277)) ('bilateral phaeochromocytomas', 'Disease', 'MESH:D006312', (446, 474)) ('patients', 'Species', '9606', (70, 78)) ('tumour', 'Phenotype', 'HP:0002664', (42, 48)) ('patient', 'Species', '9606', (70, 77)) ('patient', 'Species', '9606', (522, 529)) ('abdominal parganglioma', 'Disease', (109, 131)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (608, 625)) ('VHL', 'Disease', 'MESH:D006623', (338, 341)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (456, 473)) ('tumour', 'Disease', 'MESH:D009369', (42, 48)) ('tumour', 'Disease', (42, 48)) ('tumour', 'Phenotype', 'HP:0002664', (287, 293)) ('bilateral phaeochromocytomas', 'Disease', (446, 474)) ('SDHB', 'Gene', (364, 368)) ('SDHB', 'Gene', '6390', (536, 540)) ('tumour', 'Disease', 'MESH:D009369', (287, 293)) ('tumour', 'Disease', (287, 293)) ('VHL', 'Disease', (508, 511)) ('multi-focal phaeochromocytomas', 'Disease', 'MESH:D015140', (596, 626)) ('phaeochromocytoma', 'Disease', (87, 104)) ('SDHB', 'Gene', (536, 540)) ('patients', 'Species', '9606', (270, 278)) ('VHL', 'Disease', (338, 341)) ('patients', 'Species', '9606', (494, 502)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (87, 104)) 41549 24693229 More recently, the development of SST-analogues radiolabeled with 68Ga for positron emission tomography (PET) imaging such as [68Ga-DOTA0-Tyr3]octreotide (68Ga-DOTATOC, 68Ga-edotreotide), [68Ga-DOTA0-1NaI3]octreotide (68Ga-DOTANOC), and [68Ga-DOTA0-Tyr3]octreotate (68Ga-DOTATATE) has brought clear advantages compared to radiolabeled SST-analogues scintigraphy offering a higher spatial resolution and improving pharmacokinetics. ('advantages', 'PosReg', (299, 309)) ('68Ga-DOTATATE', 'Chemical', '-', (266, 279)) ('[68Ga-DOTA0-Tyr3', 'Var', (126, 142)) ('[68Ga-DOTA0-Tyr3]', 'Var', (237, 254)) ('improving', 'PosReg', (403, 412)) ('pharmacokinetics', 'MPA', (413, 429)) ('octreotide', 'Chemical', 'MESH:D015282', (143, 153)) ('octreotide', 'Chemical', 'MESH:D015282', (206, 216)) ('[68Ga-DOTA0-1NaI3', 'Var', (188, 205)) 41551 24693229 In particular, 68Ga-DOTANOC also shows a good affinity for SSTR subtypes 3 and 5, 68Ga-DOTATOC also binds to SSTR5 (although with lower affinity than DOTANOC), while 68Ga-DOTATATE has a predominant affinity for SSTR2. ('SSTR2', 'Gene', '6752', (211, 216)) ('binds', 'Interaction', (100, 105)) ('68Ga-DOTATOC', 'Var', (82, 94)) ('SSTR5', 'Gene', '6755', (109, 114)) ('SSTR5', 'Gene', (109, 114)) ('SSTR2', 'Gene', (211, 216)) ('68Ga-DOTATATE', 'Chemical', '-', (166, 179)) 41563 24693229 All paragangliomas were detected with 68Ga-DOTANOC and were strongly positive. ('detected', 'Reg', (24, 32)) ('paraganglioma', 'Phenotype', 'HP:0002668', (4, 17)) ('paragangliomas', 'Disease', 'MESH:D010235', (4, 18)) ('paragangliomas', 'Disease', (4, 18)) ('paragangliomas', 'Phenotype', 'HP:0002668', (4, 18)) ('glioma', 'Phenotype', 'HP:0009733', (11, 17)) ('68Ga-DOTANOC', 'Var', (38, 50)) ('gliomas', 'Phenotype', 'HP:0009733', (11, 18)) 41567 24693229 reported a higher sensitivity for lesion detection of 68Ga-DOTATOC PET/CT in metastatic phaeochromocytoma patients (n = 6) compared to 123I-MIBG scan (92% and 63%, resp.). ('phaeochromocytoma', 'Disease', 'MESH:D010673', (88, 105)) ('68Ga-DOTATOC PET/CT', 'Var', (54, 73)) ('phaeochromocytoma', 'Disease', (88, 105)) ('patients', 'Species', '9606', (106, 114)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (135, 144)) 41626 24693229 Additionally, in a subgroup of patients with multiple meningiomas, 68Ga-DOTATOC PET/CT was able to identify more lesions compared to CT or MRI (19 versus 10, resp.). ('meningiomas', 'Phenotype', 'HP:0002858', (54, 65)) ('meningioma', 'Phenotype', 'HP:0002858', (54, 64)) ('68Ga-DOTATOC', 'Var', (67, 79)) ('multiple meningiomas', 'Disease', 'MESH:D008577', (45, 65)) ('multiple meningiomas', 'Disease', (45, 65)) ('patients', 'Species', '9606', (31, 39)) 41638 24693229 Although the overall detection rate for both procedures was comparable (positive results in 72% and 77% of the cases for 68Ga-DOTATATE and [18F]FDG, resp. ('68Ga-DOTATATE', 'Var', (121, 134)) ('68Ga-DOTATATE', 'Chemical', '-', (121, 134)) ('[18F]FDG', 'Var', (139, 147)) 41640 24693229 retrospectively compared PET/CT with 68Ga-DOTATATE, [18F]FDG, and [18F]DOPA in 18 patients with residual/recurrent MTC suspected on the basis of elevated serum calcitonin levels. ('68Ga-DOTATATE', 'Chemical', '-', (37, 50)) ('elevated', 'PosReg', (145, 153)) ('[18F]', 'Var', (66, 71)) ('serum calcitonin levels', 'MPA', (154, 177)) ('patients', 'Species', '9606', (82, 90)) ('DOPA', 'Chemical', 'MESH:D004295', (71, 75)) ('elevated serum calcitonin', 'Phenotype', 'HP:0003528', (145, 170)) ('MTC', 'Phenotype', 'HP:0002865', (115, 118)) ('[18F]FDG', 'Var', (52, 60)) 41641 24693229 Results showed statistically different sensitivity values between [18F]DOPA and [18F]FDG-PET/CT (72% and 17%, resp.) ('[18F]', 'Var', (80, 85)) ('[18F]', 'Var', (66, 71)) ('DOPA', 'Chemical', 'MESH:D004295', (71, 75)) 41662 24693229 We reported a series of 39 patients with metastatic thymic malignancies evaluated by 68Ga-SST-analogues PET/CT and [18F]FDG-PET/CT. ('[18F]FDG-PET/CT', 'Var', (115, 130)) ('patients', 'Species', '9606', (27, 35)) ('thymic malignancies', 'Disease', (52, 71)) ('thymic malignancies', 'Disease', 'MESH:D013953', (52, 71)) 41680 24693229 68Ga-DOTATOC PET/CT was positive in 61% of the investigated patients; however, on a lesion-by-lesion basis, only 22% of [18F]FDG-positive metastases were seen with 68Ga-DOTATOC PET/CT. ('68Ga-DOTATOC PET/CT', 'Var', (164, 183)) ('patients', 'Species', '9606', (60, 68)) ('metastases', 'Disease', (138, 148)) ('metastases', 'Disease', 'MESH:D009362', (138, 148)) 41684 24693229 On a side-by-side analysis only 30% of bone scintigraphy-positive metastases were seen with 68Ga-DOTATOC PET/CT. ('metastases', 'Disease', (66, 76)) ('68Ga-DOTATOC PET/CT', 'Var', (92, 111)) ('metastases', 'Disease', 'MESH:D009362', (66, 76)) 41710 22347965 Clinicoradiological manifestations of paraganglioma syndromes associated with succinyl dehydrogenase enzyme mutation Paragangliomas are rare tumours derived from the autonomic nervous system that have increasingly been recognised to have a genetic predisposition. ('tumours', 'Disease', (141, 148)) ('paraganglioma syndromes', 'Disease', (38, 61)) ('associated', 'Reg', (62, 72)) ('Paragangliomas', 'Disease', (117, 131)) ('paraganglioma', 'Phenotype', 'HP:0002668', (38, 51)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (117, 131)) ('tumour', 'Phenotype', 'HP:0002664', (141, 147)) ('Paragangliomas', 'Disease', 'MESH:D010235', (117, 131)) ('tumours', 'Disease', 'MESH:D009369', (141, 148)) ('tumours', 'Phenotype', 'HP:0002664', (141, 148)) ('mutation', 'Var', (108, 116)) ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (38, 61)) 41711 22347965 Mutations of the enzyme succinyl dehydrogenase (SDH) have proven to result in paraganglioma formation. ('SDH', 'Gene', '6390', (48, 51)) ('paraganglioma', 'Disease', (78, 91)) ('SDH', 'Gene', (48, 51)) ('result in', 'Reg', (68, 77)) ('Mutations', 'Var', (0, 9)) ('paraganglioma', 'Disease', 'MESH:D010235', (78, 91)) ('paraganglioma', 'Phenotype', 'HP:0002668', (78, 91)) 41712 22347965 SDHB and SDHD mutations are more common, whereas SDHA and SDHC mutations are rare. ('SDHD', 'Disease', 'None', (9, 13)) ('SDHA', 'Gene', (49, 53)) ('common', 'Reg', (33, 39)) ('SDHC', 'Gene', (58, 62)) ('SDHD', 'Disease', (9, 13)) ('SDHC', 'Gene', '6391', (58, 62)) ('SDHB', 'Gene', '6390', (0, 4)) ('mutations', 'Var', (14, 23)) ('SDHB', 'Gene', (0, 4)) ('SDHA', 'Gene', '6389', (49, 53)) 41713 22347965 Patients with SDHB mutations are prone to extra-adrenal pheochromocytomas, malignant disease and extra-paraganglial neoplasia, whereas SDHD mutations have a greater propensity for multiple, benign head and neck paragangliomas. ('neck paragangliomas', 'Disease', 'MESH:D010235', (206, 225)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (56, 72)) ('SDHB', 'Gene', '6390', (14, 18)) ('extra-paraganglial neoplasia', 'Disease', 'MESH:D009369', (97, 125)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (206, 225)) ('malignant disease', 'Disease', 'MESH:D009369', (75, 92)) ('extra-adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (42, 73)) ('malignant disease', 'Disease', (75, 92)) ('SDHD', 'Disease', (135, 139)) ('Patients', 'Species', '9606', (0, 8)) ('paraganglioma', 'Phenotype', 'HP:0002668', (211, 224)) ('SDHB', 'Gene', (14, 18)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (56, 73)) ('neck paragangliomas', 'Disease', (206, 225)) ('prone', 'Reg', (33, 38)) ('extra-paraganglial neoplasia', 'Disease', (97, 125)) ('paragangliomas', 'Phenotype', 'HP:0002668', (211, 225)) ('extra-adrenal pheochromocytomas', 'Phenotype', 'HP:0006737', (42, 73)) ('SDHD', 'Disease', 'None', (135, 139)) ('mutations', 'Var', (19, 28)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (48, 73)) ('extra-adrenal pheochromocytomas', 'Disease', (42, 73)) ('neoplasia', 'Phenotype', 'HP:0002664', (116, 125)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (197, 225)) 41714 22347965 Diagnosis of a sporadic paraganglioma or pheochromocytoma should lead to a full genetic workup of the patient and family if SDH mutations are found. ('mutations', 'Var', (128, 137)) ('patient', 'Species', '9606', (102, 109)) ('SDH', 'Gene', '6390', (124, 127)) ('paraganglioma', 'Phenotype', 'HP:0002668', (24, 37)) ('paraganglioma or pheochromocytoma', 'Disease', 'MESH:D010673', (24, 57)) ('sporadic paraganglioma', 'Disease', 'MESH:D010235', (15, 37)) ('SDH', 'Gene', (124, 127)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (41, 57)) ('sporadic paraganglioma', 'Disease', (15, 37)) ('paraganglioma or pheochromocytoma', 'Disease', (24, 57)) 41715 22347965 We present our imaging experience with a series of patients with proven SDH mutations resulting in paragangliomas with a review of the literature. ('paragangliomas', 'Disease', (99, 113)) ('paragangliomas', 'Disease', 'MESH:D010235', (99, 113)) ('paragangliomas', 'Phenotype', 'HP:0002668', (99, 113)) ('mutations', 'Var', (76, 85)) ('paraganglioma', 'Phenotype', 'HP:0002668', (99, 112)) ('SDH', 'Gene', '6390', (72, 75)) ('resulting in', 'Reg', (86, 98)) ('SDH', 'Gene', (72, 75)) ('patients', 'Species', '9606', (51, 59)) 41719 22347965 One recently recognised genetic predisposition relates to mutations of the enzyme succinyl dehydrogenase (SDH). ('mutations', 'Var', (58, 67)) ('SDH', 'Gene', (106, 109)) ('SDH', 'Gene', '6390', (106, 109)) 41721 22347965 Recently discovered mutations of the SDH enzyme have proven to result directly in paraganglioma formation, and tumours previously thought to be sporadic may, therefore, be hereditary. ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('SDH', 'Gene', (37, 40)) ('tumours', 'Disease', (111, 118)) ('paraganglioma', 'Disease', (82, 95)) ('tumour', 'Phenotype', 'HP:0002664', (111, 117)) ('SDH', 'Gene', '6390', (37, 40)) ('paraganglioma', 'Disease', 'MESH:D010235', (82, 95)) ('result', 'Reg', (63, 69)) ('tumours', 'Phenotype', 'HP:0002664', (111, 118)) ('mutations', 'Var', (20, 29)) ('tumours', 'Disease', 'MESH:D009369', (111, 118)) 41725 22347965 This functional division relates to the various SDH subunit mutation clinical presentations. ('SDH', 'Gene', (48, 51)) ('mutation', 'Var', (60, 68)) ('SDH', 'Gene', '6390', (48, 51)) 41732 22347965 The exact pathogenetic mechanism whereby the subunit mutations result in paraganglioma formation is not known. ('paraganglioma', 'Disease', 'MESH:D010235', (73, 86)) ('mutations', 'Var', (53, 62)) ('paraganglioma', 'Phenotype', 'HP:0002668', (73, 86)) ('result in', 'Reg', (63, 72)) ('paraganglioma', 'Disease', (73, 86)) 41739 22347965 Subsequent studies confirmed that SDHB and SDHC mutations also resulted in familial paragangliomas. ('familial paragangliomas', 'Disease', 'MESH:D010235', (75, 98)) ('SDHC', 'Gene', '6391', (43, 47)) ('familial paragangliomas', 'Disease', (75, 98)) ('SDHB', 'Gene', '6390', (34, 38)) ('SDHB', 'Gene', (34, 38)) ('paraganglioma', 'Phenotype', 'HP:0002668', (84, 97)) ('paragangliomas', 'Phenotype', 'HP:0002668', (84, 98)) ('resulted in', 'Reg', (63, 74)) ('mutations', 'Var', (48, 57)) ('SDHC', 'Gene', (43, 47)) 41740 22347965 SDHA mutation, however, has at present only been associated with metabolic neurodegenerative disorders. ('SDHA', 'Gene', (0, 4)) ('neurodegenerative disorder', 'Phenotype', 'HP:0002180', (75, 101)) ('associated', 'Reg', (49, 59)) ('SDHA', 'Gene', '6389', (0, 4)) ('metabolic neurodegenerative disorders', 'Disease', (65, 102)) ('metabolic neurodegenerative disorders', 'Disease', 'MESH:D019636', (65, 102)) ('neurodegenerative disorders', 'Phenotype', 'HP:0002180', (75, 102)) ('mutation', 'Var', (5, 13)) 41741 22347965 The incidence of underlying SDH mutations in patients with apparently sporadic parasympathetic paragangliomas of the head and neck has been reported as high as 28% (7% due to SDHB, 4% SDHC and 17% SDHD). ('SDHD', 'Disease', 'None', (197, 201)) ('SDH', 'Gene', (28, 31)) ('SDH', 'Gene', '6390', (184, 187)) ('patients', 'Species', '9606', (45, 53)) ('SDHB', 'Gene', (175, 179)) ('SDHC', 'Gene', '6391', (184, 188)) ('SDH', 'Gene', '6390', (175, 178)) ('paragangliomas', 'Disease', 'MESH:D010235', (95, 109)) ('paragangliomas', 'Phenotype', 'HP:0002668', (95, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (95, 108)) ('SDH', 'Gene', '6390', (197, 200)) ('mutations', 'Var', (32, 41)) ('SDH', 'Gene', (184, 187)) ('paragangliomas of the head and neck', 'Phenotype', 'HP:0002864', (95, 130)) ('SDH', 'Gene', (175, 178)) ('SDHC', 'Gene', (184, 188)) ('SDHD', 'Disease', (197, 201)) ('SDH', 'Gene', (197, 200)) ('paragangliomas', 'Disease', (95, 109)) ('SDH', 'Gene', '6390', (28, 31)) ('SDHB', 'Gene', '6390', (175, 179)) 41743 22347965 SDH mutations follow an autosomal dominant inheritance pattern. ('mutations', 'Var', (4, 13)) ('SDH', 'Gene', (0, 3)) ('SDH', 'Gene', '6390', (0, 3)) 41744 22347965 SDHD mutations are also subject to genomic imprinting of the maternal allele. ('mutations', 'Var', (5, 14)) ('SDHD', 'Disease', 'None', (0, 4)) ('SDHD', 'Disease', (0, 4)) 41754 22347965 The precise incidence rate of SDH mutations is unknown. ('SDH', 'Gene', (30, 33)) ('mutations', 'Var', (34, 43)) ('SDH', 'Gene', '6390', (30, 33)) 41755 22347965 SDHB and SDHD mutations have similar prevalence and are more common compared to SDHC, which is rare. ('SDHD', 'Disease', 'None', (9, 13)) ('SDHD', 'Disease', (9, 13)) ('SDHC', 'Gene', (80, 84)) ('common', 'Reg', (61, 67)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHC', 'Gene', '6391', (80, 84)) ('mutations', 'Var', (14, 23)) ('SDHB', 'Gene', (0, 4)) 41756 22347965 SDHB mutation more commonly results in the formation of paragangliomas associated with the sympathetic system. ('paragangliomas', 'Disease', (56, 70)) ('paragangliomas', 'Disease', 'MESH:D010235', (56, 70)) ('paragangliomas', 'Phenotype', 'HP:0002668', (56, 70)) ('paraganglioma', 'Phenotype', 'HP:0002668', (56, 69)) ('SDHB', 'Gene', '6390', (0, 4)) ('results in', 'Reg', (28, 38)) ('SDHB', 'Gene', (0, 4)) ('mutation', 'Var', (5, 13)) 41759 22347965 There is an increased risk of malignant paragangliomas and metastatic disease with SDHB mutation (Fig. ('paraganglioma', 'Phenotype', 'HP:0002668', (40, 53)) ('paragangliomas', 'Phenotype', 'HP:0002668', (40, 54)) ('mutation', 'Var', (88, 96)) ('SDHB', 'Gene', (83, 87)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (30, 54)) ('malignant paragangliomas', 'Disease', (30, 54)) ('metastatic disease', 'Disease', (59, 77)) ('SDHB', 'Gene', '6390', (83, 87)) 41763 22347965 SDHD mutations are associated with parasympathetic extra-adrenal paragangliomas. ('associated', 'Reg', (19, 29)) ('parasympathetic extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (35, 79)) ('paragangliomas', 'Phenotype', 'HP:0002668', (65, 79)) ('mutations', 'Var', (5, 14)) ('paraganglioma', 'Phenotype', 'HP:0002668', (65, 78)) ('SDHD', 'Disease', 'None', (0, 4)) ('parasympathetic extra-adrenal paragangliomas', 'Disease', (35, 79)) ('SDHD', 'Disease', (0, 4)) 41766 22347965 As with SDHB mutations, pheochromocytomas are less common. ('SDHB', 'Gene', '6390', (8, 12)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (24, 41)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (24, 41)) ('pheochromocytomas', 'Disease', (24, 41)) ('SDHB', 'Gene', (8, 12)) ('mutations', 'Var', (13, 22)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (24, 40)) 41769 22347965 SDHB mutuations can result in head and neck paraganglioma formation, and SDHD mutations can develop thoracic and abdominal extra-adrenal paragangliomas. ('paraganglioma', 'Phenotype', 'HP:0002668', (44, 57)) ('abdominal extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (113, 151)) ('mutuations', 'Var', (5, 15)) ('paraganglioma', 'Disease', (137, 150)) ('SDHD', 'Disease', (73, 77)) ('paragangliomas', 'Phenotype', 'HP:0002668', (137, 151)) ('paraganglioma', 'Disease', (44, 57)) ('mutations', 'Var', (78, 87)) ('abdominal extra-adrenal paragangliomas', 'Disease', (113, 151)) ('paraganglioma', 'Disease', 'MESH:D010235', (137, 150)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHD', 'Disease', 'None', (73, 77)) ('result in', 'Reg', (20, 29)) ('paraganglioma', 'Disease', 'MESH:D010235', (44, 57)) ('develop', 'PosReg', (92, 99)) ('SDHB', 'Gene', (0, 4)) ('paraganglioma', 'Phenotype', 'HP:0002668', (137, 150)) 41770 22347965 Both mutations can result in pheochromocytoma formation. ('pheochromocytoma', 'Disease', (29, 45)) ('result in', 'Reg', (19, 28)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (29, 45)) ('mutations', 'Var', (5, 14)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (29, 45)) 41772 22347965 SDHA mutations have been described in Leigh syndrome, a metabolic neurodegenerative disorder, and are not currently recognised to result in paraganglioma formation. ('described', 'Reg', (25, 34)) ('paraganglioma', 'Phenotype', 'HP:0002668', (140, 153)) ('SDHA', 'Gene', (0, 4)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (38, 52)) ('metabolic neurodegenerative disorder', 'Disease', (56, 92)) ('paraganglioma', 'Disease', (140, 153)) ('mutations', 'Var', (5, 14)) ('metabolic neurodegenerative disorder', 'Disease', 'MESH:D019636', (56, 92)) ('SDHA', 'Gene', '6389', (0, 4)) ('paraganglioma', 'Disease', 'MESH:D010235', (140, 153)) ('neurodegenerative disorder', 'Phenotype', 'HP:0002180', (66, 92)) ('Leigh syndrome', 'Disease', (38, 52)) 41773 22347965 SDHC mutations are rare and result in head and neck paraganglioma formation. ('paraganglioma', 'Disease', 'MESH:D010235', (52, 65)) ('SDHC', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) ('SDHC', 'Gene', '6391', (0, 4)) ('paraganglioma', 'Phenotype', 'HP:0002668', (52, 65)) ('result in', 'Reg', (28, 37)) ('paraganglioma', 'Disease', (52, 65)) 41775 22347965 Very rarely do SDHC mutations result in pheochromocytoma formation. ('pheochromocytoma', 'Disease', (40, 56)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (40, 56)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (40, 56)) ('result in', 'Reg', (30, 39)) ('SDHC', 'Gene', (15, 19)) ('mutations', 'Var', (20, 29)) ('SDHC', 'Gene', '6391', (15, 19)) 41776 22347965 The recent advances in genetics with regards to SDH mutations have implications for radiology. ('mutations', 'Var', (52, 61)) ('SDH', 'Gene', (48, 51)) ('SDH', 'Gene', '6390', (48, 51)) 41779 22347965 SDH mutation-positive patients need ongoing screening as they are at high risk for developing paragangliomas, pheochromocytomas and further multifocal extraganglial tumours. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (110, 127)) ('tumour', 'Phenotype', 'HP:0002664', (165, 171)) ('SDH', 'Gene', (0, 3)) ('patients', 'Species', '9606', (22, 30)) ('mutation-positive', 'Var', (4, 21)) ('paragangliomas', 'Disease', (94, 108)) ('paragangliomas', 'Disease', 'MESH:D010235', (94, 108)) ('paragangliomas', 'Phenotype', 'HP:0002668', (94, 108)) ('tumours', 'Phenotype', 'HP:0002664', (165, 172)) ('SDH', 'Gene', '6390', (0, 3)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (110, 127)) ('tumours', 'Disease', 'MESH:D009369', (165, 172)) ('paraganglioma', 'Phenotype', 'HP:0002668', (94, 107)) ('pheochromocytomas', 'Disease', (110, 127)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (110, 126)) ('tumours', 'Disease', (165, 172)) 41782 22347965 In cases of SDHB mutation screening as early as 10 years of age is recommended. ('SDHB', 'Gene', '6390', (12, 16)) ('SDHB', 'Gene', (12, 16)) ('mutation', 'Var', (17, 25)) 41784 22347965 SDHB and SDHD mutations result in paraganglioma formation. ('SDHD', 'Disease', 'None', (9, 13)) ('paraganglioma', 'Phenotype', 'HP:0002668', (34, 47)) ('paraganglioma', 'Disease', (34, 47)) ('result in', 'Reg', (24, 33)) ('SDHD', 'Disease', (9, 13)) ('SDHB', 'Gene', '6390', (0, 4)) ('paraganglioma', 'Disease', 'MESH:D010235', (34, 47)) ('mutations', 'Var', (14, 23)) ('SDHB', 'Gene', (0, 4)) 41785 22347965 Whereas SDHB patients are prone to extra-adrenal pheochromocytomas, malignant disease and extra-paraganglial neoplasia, SDHD mutations have a greater propensity for multiple, benign head and neck paragangliomas. ('malignant disease', 'Disease', 'MESH:D009369', (68, 85)) ('extra-adrenal pheochromocytomas', 'Disease', (35, 66)) ('SDHB', 'Gene', '6390', (8, 12)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (191, 210)) ('malignant disease', 'Disease', (68, 85)) ('patients', 'Species', '9606', (13, 21)) ('SDHD', 'Disease', (120, 124)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (49, 66)) ('SDHB', 'Gene', (8, 12)) ('extra-paraganglial neoplasia', 'Disease', (90, 118)) ('extra-adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (35, 66)) ('neck paragangliomas', 'Disease', (191, 210)) ('mutations', 'Var', (125, 134)) ('paragangliomas', 'Phenotype', 'HP:0002668', (196, 210)) ('paraganglioma', 'Phenotype', 'HP:0002668', (196, 209)) ('SDHD', 'Disease', 'None', (120, 124)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (41, 66)) ('prone', 'Reg', (26, 31)) ('multiple', 'Disease', (165, 173)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (49, 65)) ('extra-adrenal pheochromocytomas', 'Phenotype', 'HP:0006737', (35, 66)) ('extra-paraganglial neoplasia', 'Disease', 'MESH:D009369', (90, 118)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (182, 210)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (191, 210)) ('neoplasia', 'Phenotype', 'HP:0002664', (109, 118)) 41843 16990424 Regular control solutions were Bio-Rad Urine Standard and Lyphocheck Urine controls (catalogue numbers C-390-10 and C-395-10). ('Rad', 'Gene', (35, 38)) ('C-395-10', 'Var', (116, 124)) ('Rad', 'Gene', '6236', (35, 38)) 41845 16990424 For all specimens in which either normetanephrine, metanephrine or 3-methoxytyramine were above the age- and sex- specific references ranges, and where the patient was seen at the John Radcliffe or a general practice within the referral area, a review of all biochemistry, hematology, immunology and online radiology results was carried out (including an assessment of clinical information provided at the time of the request). ('Rad', 'Gene', (185, 188)) ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (67, 84)) ('metanephrine', 'Chemical', 'MESH:D008676', (51, 63)) ('normetanephrine', 'Chemical', 'MESH:D009647', (34, 49)) ('metanephrine', 'Chemical', 'MESH:D008676', (37, 49)) ('normetanephrine', 'Var', (34, 49)) ('Rad', 'Gene', '6236', (185, 188)) ('patient', 'Species', '9606', (156, 163)) 41910 33884914 The resulting metabolites directly damage cardiomyocytes and cause changes in cardiac structure and function; this phenomenon is known as catecholamine cardiomyopathy. ('damage cardiomyocytes', 'Disease', 'MESH:D009422', (35, 56)) ('changes', 'Reg', (67, 74)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (152, 166)) ('function', 'MPA', (100, 108)) ('catecholamine', 'Chemical', 'MESH:D002395', (138, 151)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (152, 166)) ('damage cardiomyocytes', 'Disease', (35, 56)) ('cardiac structure', 'MPA', (78, 95)) ('metabolites', 'Var', (14, 25)) ('cardiomyopathy', 'Disease', (152, 166)) 41939 33884914 Moreover, echocardiography revealed a lesion occupying the left ventricle, with no blood perfusion, combined with decreased left ventricular systolic and diastolic function (ejection fraction [EF]: 49%; early to late diastolic transmitral flow velocity [E/A]: 2.4). ('decreased left ventricular systolic', 'Disease', (114, 149)) ('decreased left ventricular systolic', 'Disease', 'MESH:D002303', (114, 149)) ('lesion', 'Var', (38, 44)) 42018 32554825 Well-differentiated grade 3 GI NENs with a Ki-67 <55% should be treated as for grade 1 and 2 GI NENs unless there is evidence of rapid tumour growth, in which case they should be treated as for poorly differentiated NECs. ('NENs', 'Phenotype', 'HP:0100634', (96, 100)) ('tumour', 'Phenotype', 'HP:0002664', (135, 141)) ('NENs', 'Phenotype', 'HP:0100634', (31, 35)) ('Ki-67', 'Var', (43, 48)) ('tumour', 'Disease', 'MESH:D009369', (135, 141)) ('tumour', 'Disease', (135, 141)) 42046 32554825 Hydroxychloroquine as a treatment for Covid-19 can cause hypoglycaemia, which should be differentiated from hyperinsulinaemic hypoglycemia. ('hypoglycaemia', 'Phenotype', 'HP:0001943', (57, 70)) ('hyperinsulinaemic hypoglycemia', 'Disease', 'MESH:D007003', (108, 138)) ('Hydroxychloroquine', 'Var', (0, 18)) ('Hydroxychloroquine', 'Chemical', 'MESH:D006886', (0, 18)) ('Covid-19', 'Disease', (38, 46)) ('hypoglycemia', 'Phenotype', 'HP:0001943', (126, 138)) ('hyperinsulinaemic hypoglycemia', 'Disease', (108, 138)) ('cause', 'Reg', (51, 56)) ('hypoglycaemia', 'Disease', 'None', (57, 70)) ('hyperinsulinaemic hypoglycemia', 'Phenotype', 'HP:0000825', (108, 138)) ('Covid-19', 'Disease', 'MESH:C000657245', (38, 46)) ('hypoglycaemia', 'Disease', (57, 70)) 42090 32554825 Patients may develop treatment-related fevers, leucopenia and lymphopenia post-PRRT and 131I-MIBG therapy. ('develop', 'PosReg', (13, 20)) ('lymphopenia', 'Disease', 'MESH:D008231', (62, 73)) ('lymphopenia', 'Phenotype', 'HP:0001888', (62, 73)) ('131I-MIBG', 'Var', (88, 97)) ('fevers', 'Phenotype', 'HP:0001945', (39, 45)) ('leucopenia', 'Disease', (47, 57)) ('Patients', 'Species', '9606', (0, 8)) ('lymphopenia', 'Disease', (62, 73)) ('treatment-related fevers', 'Disease', (21, 45)) ('leucopenia', 'Disease', 'MESH:C536227', (47, 57)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (88, 97)) 42114 33451333 However, only about ten clinical trials using inhibitors specifically targeting AURKB and most of them are still in phase I stage. ('inhibitors', 'Var', (46, 56)) ('AURKB', 'Gene', (80, 85)) ('AURKB', 'Gene', '9212', (80, 85)) 42118 33451333 Gene amplification, transcriptional activation and inhibition of protein degradation could contribute to the elevated levels of AURKA expression in cancer tissues. ('cancer', 'Disease', (148, 154)) ('inhibition', 'NegReg', (51, 61)) ('cancer', 'Disease', 'MESH:D009369', (148, 154)) ('expression', 'MPA', (134, 144)) ('levels', 'MPA', (118, 124)) ('protein degradation', 'MPA', (65, 84)) ('contribute', 'Reg', (91, 101)) ('elevated', 'PosReg', (109, 117)) ('AURKA', 'Gene', '6790', (128, 133)) ('activation', 'PosReg', (36, 46)) ('cancer', 'Phenotype', 'HP:0002664', (148, 154)) ('Gene amplification', 'Var', (0, 18)) ('AURKA', 'Gene', (128, 133)) 42120 33451333 Given that overexpression and gene amplification of AURKA have been identified in diverse cancers, small molecule kinase inhibitors of AURKA have attracted considerable interest. ('AURKA', 'Gene', '6790', (52, 57)) ('cancers', 'Disease', (90, 97)) ('AURKA', 'Gene', '6790', (135, 140)) ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('AURKA', 'Gene', (52, 57)) ('AURKA', 'Gene', (135, 140)) ('cancers', 'Phenotype', 'HP:0002664', (90, 97)) ('overexpression', 'PosReg', (11, 25)) ('gene amplification', 'Var', (30, 48)) ('cancers', 'Disease', 'MESH:D009369', (90, 97)) 42121 33451333 A series of AURKA kinase inhibitors (AKIs) have been produced over the past decades; inhibition of the expression or activity of AURKA by AKIs suppresses cancer cell proliferation, migration and invasion. ('AKIs suppresses cancer', 'Disease', 'MESH:D009369', (138, 160)) ('activity', 'MPA', (117, 125)) ('expression', 'MPA', (103, 113)) ('inhibition', 'Var', (85, 95)) ('AURKA', 'Gene', '6790', (129, 134)) ('AURKA', 'Gene', '6790', (12, 17)) ('AKIs suppresses cancer', 'Disease', (138, 160)) ('AURKA', 'Gene', (129, 134)) ('AURKA', 'Gene', (12, 17)) ('cancer', 'Phenotype', 'HP:0002664', (154, 160)) 42140 33451333 There is overwhelming evidence of overexpression and gene amplification of AURKA in a wide range of cancers. ('cancers', 'Phenotype', 'HP:0002664', (100, 107)) ('cancer', 'Phenotype', 'HP:0002664', (100, 106)) ('overexpression', 'PosReg', (34, 48)) ('AURKA', 'Gene', '6790', (75, 80)) ('gene amplification', 'Var', (53, 71)) ('AURKA', 'Gene', (75, 80)) ('cancers', 'Disease', 'MESH:D009369', (100, 107)) ('cancers', 'Disease', (100, 107)) 42141 33451333 The underlying mechanisms for AURKA upregulation in cancer include gene amplification, gene mutation, microRNA regulation, transcriptional or posttranscriptional modification, and others. ('cancer', 'Phenotype', 'HP:0002664', (52, 58)) ('microRNA regulation', 'MPA', (102, 121)) ('upregulation', 'PosReg', (36, 48)) ('AURKA', 'Gene', '6790', (30, 35)) ('cancer', 'Disease', (52, 58)) ('cancer', 'Disease', 'MESH:D009369', (52, 58)) ('gene mutation', 'Var', (87, 100)) ('gene amplification', 'Var', (67, 85)) ('AURKA', 'Gene', (30, 35)) 42168 33451333 Likewise, NEDD9 and PUM2 not only stimulate autophosphorylation and autoactivation of AURKA but also stabilize AURKA protein expression through disassociation from cdh. ('disassociation', 'Var', (144, 158)) ('AURKA', 'Gene', '6790', (86, 91)) ('AURKA', 'Gene', '6790', (111, 116)) ('stabilize', 'PosReg', (101, 110)) ('cdh', 'Protein', (164, 167)) ('autophosphorylation', 'MPA', (44, 63)) ('PUM2', 'Gene', (20, 24)) ('AURKA', 'Gene', (86, 91)) ('AURKA', 'Gene', (111, 116)) ('stimulate', 'PosReg', (34, 43)) ('autoactivation', 'MPA', (68, 82)) ('expression', 'MPA', (125, 135)) ('NEDD9', 'Gene', (10, 15)) ('PUM2', 'Gene', '23369', (20, 24)) ('NEDD9', 'Gene', '4739', (10, 15)) 42171 33451333 These regulators are usually tumor suppressors, and inhibition of AURKA is one of the mechanisms explaining their tumor-suppressive functions. ('AURKA', 'Gene', '6790', (66, 71)) ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('tumor', 'Disease', 'MESH:D009369', (29, 34)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('AURKA', 'Gene', (66, 71)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('tumor', 'Disease', (114, 119)) ('inhibition', 'Var', (52, 62)) ('tumor', 'Disease', (29, 34)) 42179 33451333 GSK-3beta interacts with AURKA and phosphorylates AURKA at Ser290/291 in vitro, after which autophosphorylation occurs at Ser349, which is an AURKA activity-inhibiting phosphorylation site. ('Ser349', 'Chemical', '-', (122, 128)) ('AURKA', 'Gene', '6790', (25, 30)) ('AURKA', 'Gene', '6790', (142, 147)) ('Ser349', 'Var', (122, 128)) ('autophosphorylation', 'MPA', (92, 111)) ('Ser290', 'Chemical', '-', (59, 65)) ('AURKA', 'Gene', (25, 30)) ('AURKA', 'Gene', (142, 147)) ('AURKA', 'Gene', '6790', (50, 55)) ('interacts', 'Interaction', (10, 19)) ('GSK-3beta', 'Gene', '2931', (0, 9)) ('AURKA', 'Gene', (50, 55)) ('GSK-3beta', 'Gene', (0, 9)) 42187 33451333 Phosphorylation of AURKA by IKK2 targets it for beta-TRCP-mediated degradation and serves to maintain appropriate levels of AURKA to assure proper bipolar spindle assembly and mitotic progression. ('IKK2', 'Gene', (28, 32)) ('levels', 'MPA', (114, 120)) ('AURKA', 'Gene', '6790', (124, 129)) ('AURKA', 'Gene', '6790', (19, 24)) ('beta-TRCP', 'Gene', '8945', (48, 57)) ('Phosphorylation', 'Var', (0, 15)) ('beta-TRCP', 'Gene', (48, 57)) ('targets', 'Reg', (33, 40)) ('AURKA', 'Gene', (124, 129)) ('AURKA', 'Gene', (19, 24)) ('mitotic progression', 'CPA', (176, 195)) ('IKK2', 'Gene', '3551', (28, 32)) ('bipolar spindle assembly', 'CPA', (147, 171)) 42193 33451333 VHL is an E3 ligase that multi-monoubiquitinates AURKA in quiescent cells and targets it for proteasome-mediated degradation under both normoxic and hypoxic conditions. ('AURKA', 'Gene', '6790', (49, 54)) ('AURKA', 'Gene', (49, 54)) ('proteasome-mediated degradation', 'MPA', (93, 124)) ('hypoxic conditions', 'Disease', 'MESH:D000071069', (149, 167)) ('hypoxic conditions', 'Disease', (149, 167)) ('VHL', 'Gene', (0, 3)) ('VHL', 'Gene', '7428', (0, 3)) ('multi-monoubiquitinates', 'Var', (25, 48)) 42204 33451333 Many of the substrates regulated by AURKA coordinate with AURKA to control mitotic progression, and aberrant expression of AURKA in a variety of human cancers has been linked with mitotic defects. ('linked', 'Reg', (168, 174)) ('AURKA', 'Gene', (123, 128)) ('AURKA', 'Gene', '6790', (58, 63)) ('mitotic progression', 'CPA', (75, 94)) ('AURKA', 'Gene', (58, 63)) ('mitotic defects', 'Disease', (180, 195)) ('cancer', 'Phenotype', 'HP:0002664', (151, 157)) ('human', 'Species', '9606', (145, 150)) ('AURKA', 'Gene', '6790', (36, 41)) ('aberrant expression', 'Var', (100, 119)) ('cancers', 'Disease', 'MESH:D009369', (151, 158)) ('AURKA', 'Gene', '6790', (123, 128)) ('cancers', 'Phenotype', 'HP:0002664', (151, 158)) ('AURKA', 'Gene', (36, 41)) ('cancers', 'Disease', (151, 158)) ('mitotic defects', 'Disease', 'MESH:C536987', (180, 195)) 42211 33451333 ASAP is also a spindle-associated protein, deregulation of which induces severe mitotic defects. ('ASAP', 'Gene', '79884', (0, 4)) ('ASAP', 'Gene', (0, 4)) ('induces', 'Reg', (65, 72)) ('mitotic defects', 'Disease', 'MESH:C536987', (80, 95)) ('deregulation', 'Var', (43, 55)) ('mitotic defects', 'Disease', (80, 95)) 42213 33451333 The AURKA activator TPX2 is an AURKA substrate with phosphorylation sites at Ser121 and Ser125. ('Ser121', 'Var', (77, 83)) ('AURKA', 'Gene', (4, 9)) ('AURKA', 'Gene', '6790', (31, 36)) ('Ser125', 'Chemical', '-', (88, 94)) ('AURKA', 'Gene', (31, 36)) ('TPX2', 'Gene', (20, 24)) ('Ser121', 'Chemical', '-', (77, 83)) ('Ser125', 'Var', (88, 94)) ('AURKA', 'Gene', '6790', (4, 9)) ('TPX2', 'Gene', '22974', (20, 24)) 42223 33451333 Research has shown that AURKA phosphorylation of Twist at Ser123, Thr148 and Ser184 facilitates Twist-mediated promotion of EMT and chemoresistance in pancreatic cancer cells. ('pancreatic cancer', 'Disease', 'MESH:D010190', (151, 168)) ('AURKA', 'Gene', (24, 29)) ('Thr148', 'Chemical', '-', (66, 72)) ('Thr148', 'Var', (66, 72)) ('promotion', 'PosReg', (111, 120)) ('Twist', 'Gene', '7291', (96, 101)) ('Twist', 'Gene', '7291', (49, 54)) ('Ser184', 'Var', (77, 83)) ('Twist', 'Gene', (96, 101)) ('Twist', 'Gene', (49, 54)) ('cancer', 'Phenotype', 'HP:0002664', (162, 168)) ('pancreatic cancer', 'Phenotype', 'HP:0002894', (151, 168)) ('Ser123', 'Chemical', '-', (58, 64)) ('Ser184', 'Chemical', '-', (77, 83)) ('AURKA', 'Gene', '6790', (24, 29)) ('facilitates', 'PosReg', (84, 95)) ('pancreatic cancer', 'Disease', (151, 168)) 42232 33451333 Phosphorylation of LDHB by AURKA at Ser162 amplifies its activity in reducing pyruvate to lactate, thus promoting glycolysis and biosynthesis and promoting tumor growth. ('glycolysis', 'MPA', (114, 124)) ('AURKA', 'Gene', '6790', (27, 32)) ('reducing pyruvate to lactate', 'MPA', (69, 97)) ('biosynthesis', 'MPA', (129, 141)) ('promoting', 'PosReg', (104, 113)) ('promoting', 'PosReg', (146, 155)) ('tumor', 'Disease', 'MESH:D009369', (156, 161)) ('AURKA', 'Gene', (27, 32)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('Phosphorylation', 'MPA', (0, 15)) ('Ser162', 'Var', (36, 42)) ('Ser162', 'Chemical', '-', (36, 42)) ('LDHB', 'Gene', (19, 23)) ('tumor', 'Disease', (156, 161)) ('lactate', 'Chemical', 'MESH:D019344', (90, 97)) ('LDHB', 'Gene', '3945', (19, 23)) ('pyruvate', 'Chemical', 'MESH:D019289', (78, 86)) 42233 33451333 Recently, our research has indicated that phosphorylation of the scaffold and oncogenic protein SDCBP by AURKA maintains its protein stability and pro-proliferative functions. ('SDCBP', 'Gene', (96, 101)) ('pro-proliferative functions', 'CPA', (147, 174)) ('maintains', 'PosReg', (111, 120)) ('protein stability', 'MPA', (125, 142)) ('SDCBP', 'Gene', '6386', (96, 101)) ('AURKA', 'Gene', '6790', (105, 110)) ('phosphorylation', 'Var', (42, 57)) ('AURKA', 'Gene', (105, 110)) 42236 33451333 HURP protein stability and serum-independent growth are enhanced after phosphorylation. ('phosphorylation', 'Var', (71, 86)) ('HURP', 'Gene', '9787', (0, 4)) ('enhanced', 'PosReg', (56, 64)) ('serum-independent growth', 'CPA', (27, 51)) ('HURP', 'Gene', (0, 4)) 42240 33451333 AURKA regulates LIMK2 kinase activity, subcellular localization and protein levels by directly phosphorylating LIMK2 at Ser283, Thr494 and Thr505. ('AURKA', 'Gene', (0, 5)) ('LIMK2', 'Gene', '3985', (111, 116)) ('LIMK2', 'Gene', (111, 116)) ('LIMK2', 'Gene', '3985', (16, 21)) ('Ser283', 'Var', (120, 126)) ('regulates', 'Reg', (6, 15)) ('LIMK2', 'Gene', (16, 21)) ('Thr494', 'Var', (128, 134)) ('Thr505', 'Var', (139, 145)) ('Thr494', 'Chemical', '-', (128, 134)) ('protein levels', 'MPA', (68, 82)) ('Ser283', 'Chemical', '-', (120, 126)) ('AURKA', 'Gene', '6790', (0, 5)) ('Thr505', 'Chemical', '-', (139, 145)) ('subcellular localization', 'MPA', (39, 63)) 42241 33451333 The small GTPase RalA is also a target of AURKA; phosphorylation of RalA at Ser194 enhances cell migration and anchorage-independent growth. ('anchorage-independent growth', 'CPA', (111, 139)) ('AURKA', 'Gene', (42, 47)) ('RalA', 'Gene', (68, 72)) ('RalA', 'Gene', (17, 21)) ('Ser194', 'Chemical', '-', (76, 82)) ('RalA', 'Gene', '5898', (68, 72)) ('enhances', 'PosReg', (83, 91)) ('AURKA', 'Gene', '6790', (42, 47)) ('cell migration', 'CPA', (92, 106)) ('RalA', 'Gene', '5898', (17, 21)) ('phosphorylation', 'Var', (49, 64)) 42242 33451333 ALDH1A1 is an AURKA substrate enzyme whose phosphorylation by AURKA at Thr267, Thr442 and Thr493 regulates ALDH1A1 protein stability, enhancing the role of this protein in the process of EMT. ('enhancing', 'PosReg', (134, 143)) ('Thr267', 'Chemical', '-', (71, 77)) ('Thr493', 'Var', (90, 96)) ('Thr442', 'Chemical', '-', (79, 85)) ('phosphorylation', 'MPA', (43, 58)) ('AURKA', 'Gene', (14, 19)) ('AURKA', 'Gene', (62, 67)) ('ALDH1A1', 'Gene', '216', (0, 7)) ('ALDH1A1', 'Gene', (107, 114)) ('protein stability', 'MPA', (115, 132)) ('ALDH1A1', 'Gene', '216', (107, 114)) ('Thr493', 'Chemical', '-', (90, 96)) ('regulates', 'Reg', (97, 106)) ('ALDH1A1', 'Gene', (0, 7)) ('AURKA', 'Gene', '6790', (14, 19)) ('AURKA', 'Gene', '6790', (62, 67)) 42245 33451333 However, Ser106 residue phosphorylation by AURKA has the opposite effect. ('Ser106', 'Chemical', '-', (9, 15)) ('AURKA', 'Gene', '6790', (43, 48)) ('AURKA', 'Gene', (43, 48)) ('Ser106 residue', 'Var', (9, 23)) 42247 33451333 Another study has revealed that the p53 Ser215 site is phosphorylated by AURKA. ('AURKA', 'Gene', '6790', (73, 78)) ('p53', 'Gene', (36, 39)) ('p53', 'Gene', '7157', (36, 39)) ('AURKA', 'Gene', (73, 78)) ('Ser215', 'Var', (40, 46)) ('Ser215', 'Chemical', '-', (40, 46)) 42250 33451333 Phosphorylation of RASSF1A by AURKA at Ser203 and Thr202 removes the ability of RASSF1A to interact with microtubules and induce M-phase cell cycle arrest. ('removes', 'NegReg', (57, 64)) ('RASSF1A', 'Gene', '11186', (80, 87)) ('RASSF1A', 'Gene', '11186', (19, 26)) ('arrest', 'Disease', 'MESH:D006323', (148, 154)) ('Thr202', 'Var', (50, 56)) ('Phosphorylation', 'Var', (0, 15)) ('interact', 'Interaction', (91, 99)) ('RASSF1A', 'Gene', (80, 87)) ('arrest', 'Disease', (148, 154)) ('AURKA', 'Gene', (30, 35)) ('Ser203', 'Chemical', '-', (39, 45)) ('induce', 'Reg', (122, 128)) ('Thr202', 'Chemical', '-', (50, 56)) ('ability', 'MPA', (69, 76)) ('RASSF1A', 'Gene', (19, 26)) ('AURKA', 'Gene', '6790', (30, 35)) ('microtubules', 'Protein', (105, 117)) 42254 33451333 Phosphorylation of LKB1 at Ser299 causes LKB1 to dissociate from AMPK, resulting in impairment of the AMPK signaling pathway and facilitating non-small-cell lung cancer (NSCLC) growth and migration. ('LKB1', 'Gene', '6794', (19, 23)) ('LKB1', 'Gene', '6794', (41, 45)) ('cancer', 'Phenotype', 'HP:0002664', (162, 168)) ('Phosphorylation', 'Var', (0, 15)) ('facilitating', 'PosReg', (129, 141)) ('NSCLC', 'Disease', 'MESH:D002289', (170, 175)) ('small-cell lung cancer', 'Disease', 'MESH:D055752', (146, 168)) ('AMPK', 'Gene', (65, 69)) ('LKB1', 'Gene', (19, 23)) ('AMPK', 'Gene', '5564', (65, 69)) ('small-cell lung cancer', 'Disease', (146, 168)) ('Ser299', 'Var', (27, 33)) ('LKB1', 'Gene', (41, 45)) ('NSCLC', 'Disease', (170, 175)) ('Ser299', 'Chemical', '-', (27, 33)) ('lung cancer', 'Phenotype', 'HP:0100526', (157, 168)) ('AMPK', 'Gene', (102, 106)) ('impairment', 'NegReg', (84, 94)) ('AMPK', 'Gene', '5564', (102, 106)) 42261 33451333 Once YY1 is phosphorylated by AURKA at Ser365, its DNA-binding activity and transcriptional activity are abolished. ('YY1', 'Gene', '7528', (5, 8)) ('DNA-binding', 'Interaction', (51, 62)) ('YY1', 'Gene', (5, 8)) ('Ser365', 'Var', (39, 45)) ('transcriptional activity', 'MPA', (76, 100)) ('AURKA', 'Gene', '6790', (30, 35)) ('Ser365', 'Chemical', '-', (39, 45)) ('abolished', 'NegReg', (105, 114)) ('AURKA', 'Gene', (30, 35)) 42264 33451333 AURKA-mediated phosphorylation of CHIP at Ser273 promotes androgen degradation in castration-resistant prostate cancer. ('AURKA', 'Gene', (0, 5)) ('phosphorylation', 'Var', (15, 30)) ('prostate cancer', 'Disease', 'MESH:D011471', (103, 118)) ('promotes', 'PosReg', (49, 57)) ('Ser273', 'Chemical', '-', (42, 48)) ('prostate cancer', 'Phenotype', 'HP:0012125', (103, 118)) ('AURKA', 'Gene', '6790', (0, 5)) ('cancer', 'Phenotype', 'HP:0002664', (112, 118)) ('androgen degradation', 'MPA', (58, 78)) ('prostate cancer', 'Disease', (103, 118)) 42266 33451333 Phosphorylation by AURKA at Ser243 may account for the cancer-promoting effects of KCTD12. ('KCTD12', 'Gene', '115207', (83, 89)) ('AURKA', 'Gene', '6790', (19, 24)) ('cancer', 'Disease', 'MESH:D009369', (55, 61)) ('Ser243', 'Chemical', '-', (28, 34)) ('Ser243', 'Var', (28, 34)) ('cancer', 'Phenotype', 'HP:0002664', (55, 61)) ('Phosphorylation', 'MPA', (0, 15)) ('AURKA', 'Gene', (19, 24)) ('KCTD12', 'Gene', (83, 89)) ('cancer', 'Disease', (55, 61)) 42276 33451333 In recent years, several small molecules that selectively target AURKA have been identified with anticancer activity in preclinical studies including LY3295668, BPR1K0609S1, LDD970, MK-8745, AKI603 and CYC3. ('AURKA', 'Gene', (65, 70)) ('BPR1K0609S1', 'Var', (161, 172)) ('cancer', 'Disease', 'MESH:D009369', (101, 107)) ('cancer', 'Disease', (101, 107)) ('LDD970', 'Var', (174, 180)) ('LDD970', 'CellLine', 'CVCL:7312', (174, 180)) ('MK-8745', 'Var', (182, 189)) ('AKI603', 'Var', (191, 197)) ('LY3295668', 'Var', (150, 159)) ('LY3295668', 'Chemical', '-', (150, 159)) ('cancer', 'Phenotype', 'HP:0002664', (101, 107)) ('AURKA', 'Gene', '6790', (65, 70)) 42278 33451333 The common dose-limiting toxicity of specific AKIs, including MLN8237 and ENMD-2076, are neutropenia, somnolence and mucisitis. ('neutropenia', 'Phenotype', 'HP:0001875', (89, 100)) ('neutropenia', 'Disease', 'MESH:D009503', (89, 100)) ('toxicity', 'Disease', 'MESH:D064420', (25, 33)) ('toxicity', 'Disease', (25, 33)) ('somnolence', 'Disease', (102, 112)) ('MLN8237', 'Chemical', 'MESH:C550258', (62, 69)) ('somnolence', 'Disease', 'MESH:D006970', (102, 112)) ('mucisitis', 'Disease', (117, 126)) ('neutropenia', 'Disease', (89, 100)) ('MLN8237', 'Var', (62, 69)) 42279 33451333 MLN8237 is a highly selective small molecule inhibitor of AURKA with an IC50 of 1 nM. ('MLN8237', 'Chemical', 'MESH:C550258', (0, 7)) ('MLN8237', 'Var', (0, 7)) ('AURKA', 'Gene', '6790', (58, 63)) ('AURKA', 'Gene', (58, 63)) 42280 33451333 MLN8237 was developed as an enhancement of its predecessor, MLN8054, development of which was terminated after phase I studies due to central nervous system side effects, including dose-limiting somnolence. ('somnolence', 'Disease', (195, 205)) ('MLN8237', 'Chemical', 'MESH:C550258', (0, 7)) ('somnolence', 'Disease', 'MESH:D006970', (195, 205)) ('MLN8237', 'Var', (0, 7)) ('MLN8054', 'Chemical', 'MESH:C518940', (60, 67)) 42281 33451333 MLN8237 has been shown to inhibit cell proliferation by impairing mitosis, inducing cell cycle arrest and autophagy, and accelerating cancer cell apoptosis and senescence in multiple cancer types. ('cancer', 'Disease', (183, 189)) ('impairing mitosis', 'Disease', (56, 73)) ('cell proliferation', 'CPA', (34, 52)) ('MLN8237', 'Chemical', 'MESH:C550258', (0, 7)) ('inhibit', 'NegReg', (26, 33)) ('cancer', 'Disease', (134, 140)) ('cancer', 'Disease', 'MESH:D009369', (134, 140)) ('senescence', 'CPA', (160, 170)) ('cancer', 'Phenotype', 'HP:0002664', (183, 189)) ('MLN8237', 'Var', (0, 7)) ('arrest', 'Disease', 'MESH:D006323', (95, 101)) ('impairing mitosis', 'Disease', 'MESH:D060825', (56, 73)) ('accelerating', 'PosReg', (121, 133)) ('inducing', 'PosReg', (75, 83)) ('cancer', 'Phenotype', 'HP:0002664', (134, 140)) ('autophagy', 'CPA', (106, 115)) ('arrest', 'Disease', (95, 101)) ('cancer', 'Disease', 'MESH:D009369', (183, 189)) 42282 33451333 The EMT process is also impeded by MLN8237 treatment in human epithelial ovarian and pancreatic cancer cells. ('epithelial ovarian and pancreatic cancer', 'Disease', 'MESH:D010195', (62, 102)) ('cancer', 'Phenotype', 'HP:0002664', (96, 102)) ('MLN8237', 'Chemical', 'MESH:C550258', (35, 42)) ('human', 'Species', '9606', (56, 61)) ('EMT process', 'CPA', (4, 15)) ('MLN8237 treatment', 'Var', (35, 52)) ('pancreatic cancer', 'Phenotype', 'HP:0002894', (85, 102)) ('impeded', 'NegReg', (24, 31)) 42283 33451333 Importantly, MLN8237 significantly increases the sensitivity of tumor cells to chemotherapy drugs or radiation. ('tumor', 'Disease', (64, 69)) ('MLN8237', 'Chemical', 'MESH:C550258', (13, 20)) ('increases', 'PosReg', (35, 44)) ('sensitivity', 'MPA', (49, 60)) ('MLN8237', 'Var', (13, 20)) ('tumor', 'Disease', 'MESH:D009369', (64, 69)) ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) 42284 33451333 Mechanistic studies have revealed that MLN8237 induces proteasomal degradation of N-myc in childhood neuroblastoma. ('MLN8237', 'Chemical', 'MESH:C550258', (39, 46)) ('induces', 'Reg', (47, 54)) ('MLN8237', 'Var', (39, 46)) ('neuroblastoma', 'Disease', (101, 114)) ('proteasomal degradation', 'MPA', (55, 78)) ('N-myc', 'Gene', '4613', (82, 87)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (101, 114)) ('N-myc', 'Gene', (82, 87)) ('neuroblastoma', 'Disease', 'MESH:D009447', (101, 114)) 42285 33451333 In THCA cells, MLN8237 disrupts c-Myc/AURKA complex formation, and c-Myc is a major determinant of MLN8237 responsiveness both in vitro and in vivo. ('MLN8237', 'Chemical', 'MESH:C550258', (99, 106)) ('AURKA', 'Gene', (38, 43)) ('MLN8237', 'Var', (15, 22)) ('THCA', 'Phenotype', 'HP:0002890', (3, 7)) ('c-Myc', 'Gene', '4609', (32, 37)) ('c-Myc', 'Gene', '4609', (67, 72)) ('c-Myc', 'Gene', (32, 37)) ('c-Myc', 'Gene', (67, 72)) ('AURKA', 'Gene', '6790', (38, 43)) ('disrupts', 'NegReg', (23, 31)) ('MLN8237', 'Chemical', 'MESH:C550258', (15, 22)) 42286 33451333 MLN8237 has demonstrated efficacy in cell-derived and patient-derived xenograft (PDX) models of numerous tumor types, including glioblastoma, bladder cancer, esophageal adenocarcinoma, multiple myeloma, neuroblastoma and colon cancer. ('multiple myeloma', 'Disease', (185, 201)) ('numerous tumor', 'Disease', (96, 110)) ('MLN8237', 'Var', (0, 7)) ('esophageal adenocarcinoma', 'Phenotype', 'HP:0011459', (158, 183)) ('esophageal adenocarcinoma', 'Disease', 'MESH:D000230', (158, 183)) ('MLN8237', 'Chemical', 'MESH:C550258', (0, 7)) ('esophageal adenocarcinoma', 'Disease', (158, 183)) ('glioblastoma', 'Disease', 'MESH:D005909', (128, 140)) ('carcinoma', 'Phenotype', 'HP:0030731', (174, 183)) ('numerous tumor', 'Disease', 'MESH:D009369', (96, 110)) ('colon cancer', 'Phenotype', 'HP:0003003', (221, 233)) ('cancer', 'Phenotype', 'HP:0002664', (150, 156)) ('multiple myeloma', 'Phenotype', 'HP:0006775', (185, 201)) ('patient', 'Species', '9606', (54, 61)) ('bladder cancer', 'Disease', 'MESH:D001749', (142, 156)) ('bladder cancer', 'Disease', (142, 156)) ('glioblastoma', 'Disease', (128, 140)) ('bladder cancer', 'Phenotype', 'HP:0009725', (142, 156)) ('glioblastoma', 'Phenotype', 'HP:0012174', (128, 140)) ('multiple myeloma', 'Disease', 'MESH:D009101', (185, 201)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (203, 216)) ('cancer', 'Phenotype', 'HP:0002664', (227, 233)) ('neuroblastoma and colon cancer', 'Disease', 'MESH:D015179', (203, 233)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) 42287 33451333 Due to its potent efficiency in preclinical studies, MLN8237 has been tested in clinical trials for multiple cancers and is the only AURKA inhibitor that has proceeded to phase III evaluation. ('MLN8237', 'Var', (53, 60)) ('cancers', 'Disease', 'MESH:D009369', (109, 116)) ('cancers', 'Phenotype', 'HP:0002664', (109, 116)) ('cancers', 'Disease', (109, 116)) ('AURKA', 'Gene', '6790', (133, 138)) ('AURKA', 'Gene', (133, 138)) ('cancer', 'Phenotype', 'HP:0002664', (109, 115)) ('MLN8237', 'Chemical', 'MESH:C550258', (53, 60)) 42291 33451333 One phase II trial of MLN8237 in patients with ovarian cancer, fallopian tube cancer, peritoneal carcinoma, acute myelogenous leukemia and high-grade myelodysplastic syndrome showed that MLN8237 has modest single-agent antitumor activity. ('carcinoma', 'Phenotype', 'HP:0030731', (97, 106)) ('tumor', 'Phenotype', 'HP:0002664', (223, 228)) ('acute myelogenous leukemia', 'Disease', (108, 134)) ('fallopian tube cancer', 'Disease', (63, 84)) ('myelodysplastic syndrome', 'Disease', (150, 174)) ('peritoneal carcinoma', 'Disease', (86, 106)) ('MLN8237', 'Var', (22, 29)) ('leukemia', 'Phenotype', 'HP:0001909', (126, 134)) ('acute myelogenous leukemia', 'Disease', 'MESH:D015470', (108, 134)) ('peritoneal carcinoma', 'Disease', 'MESH:D010534', (86, 106)) ('MLN8237', 'Chemical', 'MESH:C550258', (22, 29)) ('MLN8237', 'Var', (187, 194)) ('fallopian tube cancer', 'Disease', 'MESH:D005185', (63, 84)) ('ovarian cancer', 'Disease', 'MESH:D010051', (47, 61)) ('tumor', 'Disease', (223, 228)) ('myelogenous leukemia', 'Phenotype', 'HP:0012324', (114, 134)) ('cancer', 'Phenotype', 'HP:0002664', (55, 61)) ('myelodysplastic syndrome', 'Phenotype', 'HP:0002863', (150, 174)) ('tumor', 'Disease', 'MESH:D009369', (223, 228)) ('MLN8237', 'Chemical', 'MESH:C550258', (187, 194)) ('cancer', 'Phenotype', 'HP:0002664', (78, 84)) ('myelodysplastic syndrome', 'Disease', 'MESH:D009190', (150, 174)) ('patients', 'Species', '9606', (33, 41)) ('ovarian cancer', 'Disease', (47, 61)) ('acute myelogenous leukemia', 'Phenotype', 'HP:0004808', (108, 134)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (47, 61)) 42292 33451333 In a multicenter phase II study, MLN8237 treatment obtained an objective response in 18% of 49 women with breast cancer and 21% of 48 participants with small-cell lung cancer. ('small-cell lung cancer', 'Disease', (152, 174)) ('MLN8237', 'Chemical', 'MESH:C550258', (33, 40)) ('cancer', 'Phenotype', 'HP:0002664', (168, 174)) ('breast cancer', 'Disease', (106, 119)) ('breast cancer', 'Phenotype', 'HP:0003002', (106, 119)) ('participants', 'Species', '9606', (134, 146)) ('women', 'Species', '9606', (95, 100)) ('lung cancer', 'Phenotype', 'HP:0100526', (163, 174)) ('MLN8237 treatment', 'Var', (33, 50)) ('small-cell lung cancer', 'Disease', 'MESH:D055752', (152, 174)) ('cancer', 'Phenotype', 'HP:0002664', (113, 119)) ('breast cancer', 'Disease', 'MESH:D001943', (106, 119)) 42293 33451333 In another phase II study of MLN8237 in advanced/metastatic sarcoma, occasional responses and prolonged stable disease were observed, and progression-free survival (PFS) was promising. ('sarcoma', 'Disease', 'MESH:D012509', (60, 67)) ('MLN8237', 'Var', (29, 36)) ('sarcoma', 'Disease', (60, 67)) ('sarcoma', 'Phenotype', 'HP:0100242', (60, 67)) ('MLN8237', 'Chemical', 'MESH:C550258', (29, 36)) 42294 33451333 In castration-resistant neuroendocrine prostate cancer patients, those with AURKA and N-myc activation achieve significant clinical benefit from single-agent MLN8237 treatment. ('MLN8237 treatment', 'Var', (158, 175)) ('AURKA', 'Gene', '6790', (76, 81)) ('activation', 'PosReg', (92, 102)) ('MLN8237', 'Chemical', 'MESH:C550258', (158, 165)) ('cancer', 'Phenotype', 'HP:0002664', (48, 54)) ('AURKA', 'Gene', (76, 81)) ('N-myc', 'Gene', (86, 91)) ('benefit', 'PosReg', (132, 139)) ('neuroendocrine prostate cancer', 'Disease', (24, 54)) ('neuroendocrine prostate cancer', 'Disease', 'MESH:D011471', (24, 54)) ('patients', 'Species', '9606', (55, 63)) ('prostate cancer', 'Phenotype', 'HP:0012125', (39, 54)) ('N-myc', 'Gene', '4613', (86, 91)) 42295 33451333 Another phase II study has shown that in relapsed or refractory peripheral T-cell NHL (PTCL) patients, MLN8237 has antitumor activity with an overall response rate of 30%. ('tumor', 'Disease', (119, 124)) ('NHL', 'Gene', '51750', (82, 85)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('tumor', 'Disease', 'MESH:D009369', (119, 124)) ('MLN8237', 'Chemical', 'MESH:C550258', (103, 110)) ('MLN8237', 'Var', (103, 110)) ('NHL', 'Gene', (82, 85)) ('patients', 'Species', '9606', (93, 101)) 42296 33451333 In a recently reported phase III study conducted in patients with PTCL, although MLN8237 did not demonstrate superior efficacy over comparators, it did show antitumor activity and acceptable tolerability and safety. ('MLN8237', 'Chemical', 'MESH:C550258', (81, 88)) ('MLN8237', 'Var', (81, 88)) ('tumor', 'Disease', 'MESH:D009369', (161, 166)) ('tumor', 'Phenotype', 'HP:0002664', (161, 166)) ('tumor', 'Disease', (161, 166)) ('patients', 'Species', '9606', (52, 60)) 42297 33451333 All these encouraging outcomes make MLN8237 a promising agent for cancer treatment. ('MLN8237', 'Var', (36, 43)) ('cancer', 'Phenotype', 'HP:0002664', (66, 72)) ('cancer', 'Disease', 'MESH:D009369', (66, 72)) ('MLN8237', 'Chemical', 'MESH:C550258', (36, 43)) ('cancer', 'Disease', (66, 72)) 42298 33451333 ENMD-2076, a novel, orally bioavailable multitarget inhibitor whose main targets are FLT3 (IC50 = 3 nM) and AURKA (IC50 = 14 nM), exhibits much greater potency against AURKA than against AURKB (IC50 = 350 nM). ('AURKA', 'Gene', (168, 173)) ('ENMD-2076', 'Var', (0, 9)) ('greater', 'PosReg', (144, 151)) ('AURKA', 'Gene', '6790', (108, 113)) ('FLT3', 'Gene', '2322', (85, 89)) ('AURKB', 'Gene', '9212', (187, 192)) ('AURKA', 'Gene', (108, 113)) ('AURKA', 'Gene', '6790', (168, 173)) ('FLT3', 'Gene', (85, 89)) ('potency', 'MPA', (152, 159)) ('AURKB', 'Gene', (187, 192)) 42299 33451333 Because of its multitarget properties, ENMD-2076 inhibits the growth of a wide range of human solid tumor and hematopoietic cancer cell lines, with IC50 values ranging from 0.025 to 0.7 muM. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('growth', 'CPA', (62, 68)) ('cancer', 'Disease', (124, 130)) ('tumor', 'Disease', (100, 105)) ('inhibits', 'NegReg', (49, 57)) ('cancer', 'Phenotype', 'HP:0002664', (124, 130)) ('human', 'Species', '9606', (88, 93)) ('tumor', 'Disease', 'MESH:D009369', (100, 105)) ('cancer', 'Disease', 'MESH:D009369', (124, 130)) ('ENMD-2076', 'Var', (39, 48)) 42300 33451333 ENMD-2076 shows antitumor activity in colorectal cancer, multiple myeloma and triple-negative breast cancer both in vitro and in vivo. ('ENMD-2076', 'Var', (0, 9)) ('multiple myeloma', 'Disease', (57, 73)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (38, 55)) ('multiple myeloma', 'Phenotype', 'HP:0006775', (57, 73)) ('cancer', 'Phenotype', 'HP:0002664', (49, 55)) ('colorectal cancer', 'Disease', (38, 55)) ('tumor', 'Disease', 'MESH:D009369', (20, 25)) ('multiple myeloma', 'Disease', 'MESH:D009101', (57, 73)) ('cancer', 'Phenotype', 'HP:0002664', (101, 107)) ('tumor', 'Phenotype', 'HP:0002664', (20, 25)) ('breast cancer', 'Disease', 'MESH:D001943', (94, 107)) ('colorectal cancer', 'Disease', 'MESH:D015179', (38, 55)) ('breast cancer', 'Phenotype', 'HP:0003002', (94, 107)) ('breast cancer', 'Disease', (94, 107)) ('tumor', 'Disease', (20, 25)) 42302 33451333 MK-5108 is a novel small molecule that shows robust selectivity for AURKA over AURKB (220-fold greater selectivity) and AURKC (190-fold greater selectivity). ('AURKC', 'Gene', (120, 125)) ('AURKA', 'Gene', (68, 73)) ('AURKB', 'Gene', '9212', (79, 84)) ('AURKB', 'Gene', (79, 84)) ('AURKC', 'Gene', '6795', (120, 125)) ('MK-5108', 'Var', (0, 7)) ('MK-5108', 'Chemical', 'MESH:C547876', (0, 7)) ('AURKA', 'Gene', '6790', (68, 73)) 42304 33451333 In EOC stem cells, MK-5108 induces cell cycle arrest by affecting the NF-kB pathway. ('MK-5108', 'Var', (19, 26)) ('arrest', 'Disease', 'MESH:D006323', (46, 52)) ('induces', 'Reg', (27, 34)) ('affecting', 'Reg', (56, 65)) ('NF-kB pathway', 'Pathway', (70, 83)) ('MK-5108', 'Chemical', 'MESH:C547876', (19, 26)) ('arrest', 'Disease', (46, 52)) 42305 33451333 MK-5108 also decreases the rate of proliferation and increases intratumoral apoptosis in uterine leiomyosarcoma xenografts. ('decreases', 'NegReg', (13, 22)) ('tumor', 'Disease', (68, 73)) ('leiomyosarcoma', 'Phenotype', 'HP:0100243', (97, 111)) ('sarcoma', 'Phenotype', 'HP:0100242', (104, 111)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('leiomyosarcoma', 'Disease', 'MESH:D007890', (97, 111)) ('MK-5108', 'Var', (0, 7)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('uterine leiomyosarcoma', 'Phenotype', 'HP:0002891', (89, 111)) ('MK-5108', 'Chemical', 'MESH:C547876', (0, 7)) ('increases', 'PosReg', (53, 62)) ('leiomyosarcoma', 'Disease', (97, 111)) 42308 33451333 Even though the selective AURKA inhibitors might be less toxic than pan-inhibitors, it may also lead to drug resistance more easily, so it is necessary to develop broad Aurora kinase inhibitors to obtain drugs with greater potency for cancer treatment. ('inhibitors', 'Var', (32, 42)) ('cancer', 'Disease', (235, 241)) ('cancer', 'Disease', 'MESH:D009369', (235, 241)) ('drug resistance', 'CPA', (104, 119)) ('drug resistance', 'Phenotype', 'HP:0020174', (104, 119)) ('AURKA', 'Gene', '6790', (26, 31)) ('lead to', 'Reg', (96, 103)) ('cancer', 'Phenotype', 'HP:0002664', (235, 241)) ('AURKA', 'Gene', (26, 31)) 42309 33451333 AT9283 exhibits strong activity against several kinases. ('kinases', 'Pathway', (48, 55)) ('AT9283', 'Var', (0, 6)) ('activity', 'MPA', (23, 31)) ('AT9283', 'Chemical', 'MESH:C535237', (0, 6)) 42310 33451333 The ability of AT9283 to inhibit the growth and survival of tumor cells as well as xenografts has been demonstrated in imatinib-resistant BCR-ABL-positive leukemic cells, aggressive B-cell lymphoma and medulloblastoma. ('B-cell lymphoma', 'Phenotype', 'HP:0012191', (182, 197)) ('B-cell lymphoma', 'Disease', 'MESH:D016393', (182, 197)) ('tumor', 'Disease', (60, 65)) ('medulloblastoma', 'Disease', 'MESH:D008527', (202, 217)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('cell lymphoma', 'Phenotype', 'HP:0012191', (184, 197)) ('AT9283', 'Chemical', 'MESH:C535237', (15, 21)) ('medulloblastoma', 'Phenotype', 'HP:0002885', (202, 217)) ('imatinib', 'Chemical', 'MESH:D000068877', (119, 127)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('growth', 'CPA', (37, 43)) ('inhibit', 'NegReg', (25, 32)) ('lymphoma', 'Phenotype', 'HP:0002665', (189, 197)) ('BCR-ABL', 'Gene', '25', (138, 145)) ('AT9283', 'Var', (15, 21)) ('medulloblastoma', 'Disease', (202, 217)) ('B-cell lymphoma', 'Disease', (182, 197)) ('BCR-ABL', 'Gene', (138, 145)) 42313 33451333 MK-0457, a pyrazoloquinazoline compound, inhibits all three Aurora kinases and inhibits FLT-3 and Abl kinases. ('Abl', 'Gene', '25', (98, 101)) ('pyrazoloquinazoline', 'Chemical', '-', (11, 30)) ('inhibits', 'NegReg', (41, 49)) ('MK-0457', 'Chemical', 'MESH:C484810', (0, 7)) ('inhibits', 'NegReg', (79, 87)) ('MK-0457', 'Var', (0, 7)) ('Abl', 'Gene', (98, 101)) ('FLT-3', 'Gene', (88, 93)) ('FLT-3', 'Gene', '2322', (88, 93)) ('Aurora', 'Enzyme', (60, 66)) 42316 33451333 MK-0457 induces accumulation of cells with >=4 N DNA content, inhibits cell cycle progression and induces apoptosis of anaplastic THCA cells. ('THCA', 'Phenotype', 'HP:0002890', (130, 134)) ('induces', 'Reg', (98, 105)) ('inhibits', 'NegReg', (62, 70)) ('MK-0457', 'Chemical', 'MESH:C484810', (0, 7)) ('cells with >=4 N DNA content', 'MPA', (32, 60)) ('MK-0457', 'Var', (0, 7)) ('apoptosis', 'CPA', (106, 115)) ('cell cycle progression', 'CPA', (71, 93)) ('accumulation', 'PosReg', (16, 28)) 42318 33451333 The activity of MK-0457 was also assessed in two other phase I/II studies, both of which showed promising outcomes in patients with BCR-ABL T315I leukemia. ('BCR-ABL', 'Gene', (132, 139)) ('BCR-ABL', 'Gene', '25', (132, 139)) ('T315I', 'Var', (140, 145)) ('T315I', 'Mutation', 'rs121913459', (140, 145)) ('leukemia', 'Phenotype', 'HP:0001909', (146, 154)) ('leukemia', 'Disease', 'MESH:D007938', (146, 154)) ('MK-0457', 'Chemical', 'MESH:C484810', (16, 23)) ('leukemia', 'Disease', (146, 154)) ('patients', 'Species', '9606', (118, 126)) 42320 33451333 PHA-739358 exhibits strong antiproliferative activity in BCR-ABL-positive leukemia cells, including those harboring the T315I mutation. ('leukemia', 'Phenotype', 'HP:0001909', (74, 82)) ('T315I', 'Var', (120, 125)) ('T315I', 'Mutation', 'rs121913459', (120, 125)) ('BCR-ABL', 'Gene', (57, 64)) ('BCR-ABL', 'Gene', '25', (57, 64)) ('leukemia', 'Disease', (74, 82)) ('antiproliferative activity', 'MPA', (27, 53)) ('leukemia', 'Disease', 'MESH:D007938', (74, 82)) 42321 33451333 The crystal structure of the Abl-T315I-PHA-739358 complex provides a possible structural explanation for the activity of PHA-739358 on the T315I mutation. ('Abl', 'Gene', (29, 32)) ('activity', 'MPA', (109, 117)) ('T315I', 'Var', (139, 144)) ('Abl', 'Gene', '25', (29, 32)) ('T315I', 'Mutation', 'rs121913459', (33, 38)) ('T315I', 'Mutation', 'rs121913459', (139, 144)) 42322 33451333 PHA-739358 also induces cell cycle arrest, apoptosis and autophagy and suppresses the EMT process. ('arrest', 'Disease', 'MESH:D006323', (35, 41)) ('suppresses', 'NegReg', (71, 81)) ('apoptosis', 'CPA', (43, 52)) ('PHA-739358', 'Var', (0, 10)) ('arrest', 'Disease', (35, 41)) ('EMT process', 'CPA', (86, 97)) ('induces', 'Reg', (16, 23)) ('autophagy', 'CPA', (57, 66)) 42323 33451333 In one study, PHA-739358 inhibited liver metastases from gastroenteropancreatic neuroendocrine tumors in an orthotopic xenograft model. ('metastases', 'Disease', 'MESH:D009362', (41, 51)) ('PHA-739358', 'Var', (14, 24)) ('gastroenteropancreatic neuroendocrine tumors', 'Disease', (57, 101)) ('gastroenteropancreatic neuroendocrine tumors', 'Disease', 'MESH:C535650', (57, 101)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (80, 101)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('inhibited', 'NegReg', (25, 34)) ('metastases', 'Disease', (41, 51)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) 42324 33451333 In another study, PHA-739358 inhibited early-stage bone metastases based on an ex vivo model named the 'bone-in-culture array'. ('metastases', 'Disease', 'MESH:D009362', (56, 66)) ('inhibited', 'NegReg', (29, 38)) ('PHA-739358', 'Var', (18, 28)) ('metastases', 'Disease', (56, 66)) 42325 33451333 Several phase I/II clinical evaluations have been performed on PHA-739358 due to its encouraging antitumor effects. ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('tumor', 'Disease', (101, 106)) ('PHA-739358', 'Var', (63, 73)) ('tumor', 'Disease', 'MESH:D009369', (101, 106)) 42326 33451333 Other drugs including AMG900, AS703569, BI-847325, CYC116, PF-03814735, and SNS-314 are also in phase I clinical trials. ('SNS-314', 'Chemical', 'MESH:C532454', (76, 83)) ('AMG900', 'Chemical', 'MESH:C555658', (22, 28)) ('PF-03814735', 'Chemical', 'MESH:C550549', (59, 70)) ('CYC116', 'Var', (51, 57)) ('PF-03814735', 'Var', (59, 70)) ('BI-847325', 'Var', (40, 49)) ('BI-847325', 'Chemical', 'MESH:C000606531', (40, 49)) ('AS703569', 'Var', (30, 38)) ('AS703569', 'Chemical', 'MESH:C000592140', (30, 38)) 42334 33451333 In patients with solid tumors, AS703569 in combination with the standard dose of gemcitabine produces preliminary signs of efficacy. ('solid tumors', 'Disease', (17, 29)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('patients', 'Species', '9606', (3, 11)) ('AS703569', 'Var', (31, 39)) ('solid tumors', 'Disease', 'MESH:D009369', (17, 29)) ('tumors', 'Phenotype', 'HP:0002664', (23, 29)) ('AS703569', 'Chemical', 'MESH:C000592140', (31, 39)) ('gemcitabine', 'Chemical', 'MESH:C056507', (81, 92)) 42337 33451333 In addition, MLN8237 has a synergistic effect in association with vincristine and rituximab in aggressive B-cell NHL. ('MLN8237', 'Chemical', 'MESH:C550258', (13, 20)) ('vincristine', 'Chemical', 'MESH:D014750', (66, 77)) ('NHL', 'Gene', '51750', (113, 116)) ('MLN8237', 'Var', (13, 20)) ('NHL', 'Gene', (113, 116)) ('rituximab', 'Chemical', 'MESH:D000069283', (82, 91)) 42341 33451333 In a study on Myc-overexpressing lymphoma xenografts, a combination of cyclophosphamide and MLN8237 induced complete tumor regression in all mice, leading to improvements in survival. ('lymphoma', 'Disease', 'MESH:D008223', (33, 41)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('MLN8237', 'Chemical', 'MESH:C550258', (92, 99)) ('lymphoma', 'Phenotype', 'HP:0002665', (33, 41)) ('survival', 'CPA', (174, 182)) ('tumor', 'Disease', (117, 122)) ('MLN8237', 'Var', (92, 99)) ('Myc', 'Gene', (14, 17)) ('cyclophosphamide', 'Chemical', 'MESH:D003520', (71, 87)) ('Myc', 'Gene', '17869', (14, 17)) ('mice', 'Species', '10090', (141, 145)) ('tumor', 'Disease', 'MESH:D009369', (117, 122)) ('improvements', 'PosReg', (158, 170)) ('lymphoma', 'Disease', (33, 41)) 42344 33451333 Combined treatment with MLN8237 and eribulin leads to a synergistic increase in apoptosis in mammary tumors as well as cytotoxic autophagy in metastases through the LC3B/p62 axis and Akt pathway. ('LC3B', 'Gene', (165, 169)) ('Akt', 'Gene', (183, 186)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) ('metastases', 'Disease', (142, 152)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('Akt', 'Gene', '207', (183, 186)) ('MLN8237', 'Chemical', 'MESH:C550258', (24, 31)) ('metastases', 'Disease', 'MESH:D009362', (142, 152)) ('p62', 'Gene', '23636', (170, 173)) ('increase', 'PosReg', (68, 76)) ('LC3B', 'Gene', '81631', (165, 169)) ('MLN8237', 'Var', (24, 31)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('p62', 'Gene', (170, 173)) ('apoptosis', 'CPA', (80, 89)) ('tumors', 'Disease', (101, 107)) 42345 33451333 In multiple myeloma, studies on combined treatment with AT9283 and lenalidomide have shown significant synergistic antitumor effects of this regimen both in vitro and in vivo. ('AT9283', 'Chemical', 'MESH:C535237', (56, 62)) ('multiple myeloma', 'Disease', (3, 19)) ('tumor', 'Disease', (119, 124)) ('AT9283', 'Var', (56, 62)) ('tumor', 'Disease', 'MESH:D009369', (119, 124)) ('lenalidomide', 'Chemical', 'MESH:D000077269', (67, 79)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('multiple myeloma', 'Phenotype', 'HP:0006775', (3, 19)) ('multiple myeloma', 'Disease', 'MESH:D009101', (3, 19)) 42348 33451333 PHA680632 treatment prior to radiation treatment leads to an additive effect in cancer cells, especially in p53-deficient cells in vitro or in vivo. ('p53', 'Gene', '7157', (108, 111)) ('p53', 'Gene', (108, 111)) ('cancer', 'Phenotype', 'HP:0002664', (80, 86)) ('additive effect', 'MPA', (61, 76)) ('cancer', 'Disease', 'MESH:D009369', (80, 86)) ('PHA680632', 'Chemical', 'MESH:C524543', (0, 9)) ('PHA680632', 'Var', (0, 9)) ('cancer', 'Disease', (80, 86)) 42349 33451333 Another AURKA inhibitor, MLN8054, sensitizes androgen-insensitive prostate cancer to radiation; this sensitization is associated with sustained DNA double-strand breaks. ('prostate cancer', 'Disease', 'MESH:D011471', (66, 81)) ('prostate cancer', 'Phenotype', 'HP:0012125', (66, 81)) ('MLN8054', 'Chemical', 'MESH:C518940', (25, 32)) ('AURKA', 'Gene', '6790', (8, 13)) ('sensitizes', 'Reg', (34, 44)) ('prostate cancer', 'Disease', (66, 81)) ('cancer', 'Phenotype', 'HP:0002664', (75, 81)) ('AURKA', 'Gene', (8, 13)) ('MLN8054', 'Var', (25, 32)) 42350 33451333 Two other AURKA inhibitors, MLN8237 and ENMD-2076, also enhance radiation sensitivity in cancer cells. ('ENMD-2076', 'Var', (40, 49)) ('AURKA', 'Gene', (10, 15)) ('cancer', 'Disease', 'MESH:D009369', (89, 95)) ('enhance', 'PosReg', (56, 63)) ('MLN8237', 'Chemical', 'MESH:C550258', (28, 35)) ('cancer', 'Disease', (89, 95)) ('MLN8237', 'Var', (28, 35)) ('AURKA', 'Gene', '6790', (10, 15)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) 42355 33451333 In addition, vorinostat and MK-0457 or MK-5108 combination treatment enhances lymphoma cell killing with reductions in c-Myc, hTERT, and microRNA levels. ('lymphoma', 'Disease', (78, 86)) ('hTERT', 'Gene', (126, 131)) ('vorinostat', 'Chemical', 'MESH:D000077337', (13, 23)) ('MK-5108', 'Gene', (39, 46)) ('MK-0457', 'Chemical', 'MESH:C484810', (28, 35)) ('lymphoma', 'Disease', 'MESH:D008223', (78, 86)) ('MK-0457', 'Var', (28, 35)) ('lymphoma', 'Phenotype', 'HP:0002665', (78, 86)) ('reductions', 'NegReg', (105, 115)) ('microRNA levels', 'MPA', (137, 152)) ('MK-5108', 'Chemical', 'MESH:C547876', (39, 46)) ('enhances', 'PosReg', (69, 77)) ('c-Myc', 'Gene', '4609', (119, 124)) ('hTERT', 'Gene', '7015', (126, 131)) ('c-Myc', 'Gene', (119, 124)) 42359 33451333 EGFR inhibitors have been a major breakthrough for NSCLC treatment. ('EGFR', 'Gene', (0, 4)) ('NSCLC', 'Disease', (51, 56)) ('inhibitors', 'Var', (5, 15)) ('NSCLC', 'Disease', 'MESH:D002289', (51, 56)) ('EGFR', 'Gene', '1956', (0, 4)) 42363 33451333 Both BRD4 and AURKA are regulators of the MYC gene at the translational and posttranslational levels, respectively, and targeting both of them simultaneously may produce synergistic antitumor effects. ('tumor', 'Disease', 'MESH:D009369', (186, 191)) ('produce', 'Reg', (162, 169)) ('BRD4', 'Gene', (5, 9)) ('AURKA', 'Gene', (14, 19)) ('MYC', 'Gene', (42, 45)) ('tumor', 'Phenotype', 'HP:0002664', (186, 191)) ('targeting', 'Var', (120, 129)) ('tumor', 'Disease', (186, 191)) ('BRD4', 'Gene', '23476', (5, 9)) ('MYC', 'Gene', '4609', (42, 45)) ('AURKA', 'Gene', '6790', (14, 19)) 42364 33451333 JQ1 treatment to repress BRD4 activity together with MLN8237 treatment synergistically promotes cell death in c-Myc expressing human glioblastoma cells. ('glioblastoma', 'Disease', (133, 145)) ('BRD4', 'Gene', '23476', (25, 29)) ('human', 'Species', '9606', (127, 132)) ('MLN8237', 'Var', (53, 60)) ('c-Myc', 'Gene', '4609', (110, 115)) ('glioblastoma', 'Disease', 'MESH:D005909', (133, 145)) ('glioblastoma', 'Phenotype', 'HP:0012174', (133, 145)) ('BRD4', 'Gene', (25, 29)) ('c-Myc', 'Gene', (110, 115)) ('death', 'Disease', 'MESH:D003643', (101, 106)) ('death', 'Disease', (101, 106)) ('promotes', 'PosReg', (87, 95)) ('MLN8237', 'Chemical', 'MESH:C550258', (53, 60)) ('activity', 'MPA', (30, 38)) 42367 33451333 One study showed that AURKA and MDM2 antagonism with MLN8237 and Nutlin-3 halted melanoma growth by inducing growth arrest and senescence, limiting the lifespans of senescent cells, and enhancing tumor immune infiltration and clearance. ('tumor', 'Disease', (196, 201)) ('growth arrest', 'Disease', (109, 122)) ('melanoma', 'Phenotype', 'HP:0002861', (81, 89)) ('melanoma', 'Disease', (81, 89)) ('Nutlin-3', 'Chemical', 'MESH:C482205', (65, 73)) ('tumor', 'Disease', 'MESH:D009369', (196, 201)) ('senescence', 'CPA', (127, 137)) ('lifespans', 'CPA', (152, 161)) ('MLN8237', 'Var', (53, 60)) ('MLN8237', 'Chemical', 'MESH:C550258', (53, 60)) ('MDM2', 'Gene', (32, 36)) ('tumor', 'Phenotype', 'HP:0002664', (196, 201)) ('halted', 'NegReg', (74, 80)) ('growth arrest', 'Phenotype', 'HP:0001510', (109, 122)) ('melanoma', 'Disease', 'MESH:D008545', (81, 89)) ('enhancing', 'PosReg', (186, 195)) ('MDM2', 'Gene', '4193', (32, 36)) ('clearance', 'CPA', (226, 235)) ('inducing', 'PosReg', (100, 108)) ('growth arrest', 'Disease', 'MESH:D006323', (109, 122)) ('AURKA', 'Gene', '6790', (22, 27)) ('limiting', 'NegReg', (139, 147)) ('AURKA', 'Gene', (22, 27)) 42368 33451333 The other study showed that combined MK-0457 and Nutlin-3 treatment activated p53-dependent postmitotic checkpoints at pseudo-G1 phase and induced proapoptotic p53 signaling and mitochondrial apoptosis in AML. ('MK-0457', 'Var', (37, 44)) ('mitochondrial apoptosis', 'CPA', (178, 201)) ('AML', 'Disease', (205, 208)) ('p53', 'Gene', (160, 163)) ('activated', 'PosReg', (68, 77)) ('postmitotic checkpoints at pseudo-G1 phase', 'CPA', (92, 134)) ('p53', 'Gene', (78, 81)) ('induced', 'PosReg', (139, 146)) ('p53', 'Gene', '7157', (160, 163)) ('Nutlin-3', 'Chemical', 'MESH:C482205', (49, 57)) ('p53', 'Gene', '7157', (78, 81)) ('MK-0457', 'Chemical', 'MESH:C484810', (37, 44)) ('AML', 'Disease', 'MESH:D015470', (205, 208)) 42371 33451333 In human neuroblastoma cells, MK-5108 increases the efficacy of an anti-ganglioside (GD2) 14G2a antibody, which is related to a reduction in N-Myc expression and an increase in PHLDA1 and p53 protein levels. ('MK-5108', 'Var', (30, 37)) ('neuroblastoma', 'Disease', (9, 22)) ('human', 'Species', '9606', (3, 8)) ('expression', 'MPA', (147, 157)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (9, 22)) ('ganglioside', 'Chemical', 'MESH:D005732', (72, 83)) ('neuroblastoma', 'Disease', 'MESH:D009447', (9, 22)) ('efficacy', 'MPA', (52, 60)) ('increase', 'PosReg', (165, 173)) ('PHLDA1', 'Gene', '22822', (177, 183)) ('N-Myc', 'Gene', (141, 146)) ('p53', 'Gene', '7157', (188, 191)) ('GD2', 'Gene', (85, 88)) ('N-Myc', 'Gene', '4613', (141, 146)) ('p53', 'Gene', (188, 191)) ('increases', 'PosReg', (38, 47)) ('PHLDA1', 'Gene', (177, 183)) ('reduction', 'NegReg', (128, 137)) ('MK-5108', 'Chemical', 'MESH:C547876', (30, 37)) 42372 33451333 In addition, combined treatment with an anti-GD2 14G2a antibody and MK-5108 leads to enhancement of the autophagy process in IMR-32 neuroblastoma cells. ('neuroblastoma', 'Disease', (132, 145)) ('MK-5108', 'Gene', (68, 75)) ('autophagy process', 'CPA', (104, 121)) ('IMR-32', 'CellLine', 'CVCL:0346', (125, 131)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (132, 145)) ('neuroblastoma', 'Disease', 'MESH:D009447', (132, 145)) ('MK-5108', 'Chemical', 'MESH:C547876', (68, 75)) ('enhancement', 'PosReg', (85, 96)) ('combined', 'Interaction', (13, 21)) ('anti-GD2 14G2a', 'Var', (40, 54)) ('anti-GD2', 'Gene', (40, 48)) 42373 33451333 A death receptor 5 agonist antibody has been found to initiate significant apoptosis in tumor cells undergoing therapy-induced senescence induced by MLN8237 treatment. ('death receptor 5', 'Gene', '8795', (2, 18)) ('tumor', 'Disease', 'MESH:D009369', (88, 93)) ('MLN8237', 'Chemical', 'MESH:C550258', (149, 156)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('MLN8237 treatment', 'Var', (149, 166)) ('death receptor 5', 'Gene', (2, 18)) ('tumor', 'Disease', (88, 93)) 42391 33451333 This drug delivery technology has been applied to MLN8237 and the polysaccharide nanovesicle efficiently delivers low concentrations of MLN8237 to inhibit AURKA and disrupt the anchorage-independent growth of MCF-7 cell than free MLN8237. ('AURKA', 'Gene', '6790', (155, 160)) ('disrupt', 'NegReg', (165, 172)) ('MLN8237', 'Chemical', 'MESH:C550258', (136, 143)) ('polysaccharide', 'Chemical', 'MESH:D011134', (66, 80)) ('MCF-7', 'CellLine', 'CVCL:0031', (209, 214)) ('AURKA', 'Gene', (155, 160)) ('MLN8237', 'Var', (136, 143)) ('MLN8237', 'Chemical', 'MESH:C550258', (230, 237)) ('inhibit', 'NegReg', (147, 154)) ('anchorage-independent growth', 'CPA', (177, 205)) ('MLN8237', 'Chemical', 'MESH:C550258', (50, 57)) 42400 33451333 Furthermore, due to the fact that AURKA exerts its function through specific substrates in certain cancers, inhibition of AURKA substrates instead of targeting AURKA kinase activity may decrease the adverse effects. ('AURKA', 'Gene', (34, 39)) ('cancers', 'Disease', 'MESH:D009369', (99, 106)) ('cancers', 'Phenotype', 'HP:0002664', (99, 106)) ('function', 'MPA', (51, 59)) ('cancers', 'Disease', (99, 106)) ('AURKA', 'Gene', '6790', (160, 165)) ('AURKA', 'Gene', '6790', (122, 127)) ('AURKA', 'Gene', '6790', (34, 39)) ('inhibition', 'Var', (108, 118)) ('cancer', 'Phenotype', 'HP:0002664', (99, 105)) ('AURKA', 'Gene', (160, 165)) ('AURKA', 'Gene', (122, 127)) 42404 33451333 Furthermore, in the triple-negative breast cancer cells, cell lines with a p53 mutation and increased p53 expression are more sensitive to ENMD-2076 than cell lines with decreased p53 expression. ('breast cancer', 'Phenotype', 'HP:0003002', (36, 49)) ('breast cancer', 'Disease', (36, 49)) ('p53', 'Gene', '7157', (102, 105)) ('p53', 'Gene', (180, 183)) ('expression', 'MPA', (106, 116)) ('p53', 'Gene', '7157', (180, 183)) ('sensitive', 'MPA', (126, 135)) ('increased', 'PosReg', (92, 101)) ('p53', 'Gene', (75, 78)) ('mutation', 'Var', (79, 87)) ('p53', 'Gene', '7157', (75, 78)) ('p53', 'Gene', (102, 105)) ('cancer', 'Phenotype', 'HP:0002664', (43, 49)) ('breast cancer', 'Disease', 'MESH:D001943', (36, 49)) 42530 31307198 The functions of MYC-associated factor X (MAX) and prolyl hydroxylase 2 (PHD2) mutations in the contribution to the pathogenesis of paragangliomas still remain unclear. ('MYC-associated factor X', 'Gene', '4149', (17, 40)) ('MYC-associated factor X', 'Gene', (17, 40)) ('prolyl', 'Chemical', 'MESH:C065612', (51, 57)) ('MAX', 'Gene', '4149', (42, 45)) ('MAX', 'Gene', (42, 45)) ('paragangliomas', 'Disease', (132, 146)) ('paragangliomas', 'Disease', 'MESH:D010235', (132, 146)) ('paragangliomas', 'Phenotype', 'HP:0002668', (132, 146)) ('PHD2', 'Gene', (73, 77)) ('paraganglioma', 'Phenotype', 'HP:0002668', (132, 145)) ('PHD2', 'Gene', '54583', (73, 77)) ('mutations', 'Var', (79, 88)) 42549 31307198 Until recently, only 10% of PPCs were associated with hereditary syndromes namely von Hippel-Lindau disease, multiple endocrine neoplasia type 2, and neurofibromatosis type 1, resulting from a germline mutation in the tumor suppressor gene Von Hippel Lindau (VHL), proto-oncogene RET, and tumor suppressor gene Neurofibromatosis 1 (NF1) respectively. ('hereditary syndromes', 'Disease', 'MESH:D061325', (54, 74)) ('multiple endocrine neoplasia type 2', 'Disease', (109, 144)) ('germline mutation', 'Var', (193, 210)) ('NF1', 'Gene', '4763', (332, 335)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (150, 167)) ('Von Hippel Lindau', 'Disease', 'MESH:D006623', (240, 257)) ('tumor', 'Disease', (218, 223)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (82, 107)) ('neurofibromatosis type 1', 'Gene', '4763', (150, 174)) ('RET', 'Gene', (280, 283)) ('Neurofibromatosis 1', 'Gene', (311, 330)) ('VHL', 'Gene', (259, 262)) ('associated', 'Reg', (38, 48)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (311, 328)) ('PPCs', 'Disease', (28, 32)) ('tumor', 'Disease', 'MESH:D009369', (218, 223)) ('tumor', 'Disease', (289, 294)) ('NF1', 'Gene', (332, 335)) ('von Hippel-Lindau disease', 'Disease', (82, 107)) ('PPCs', 'Disease', 'MESH:D010673', (28, 32)) ('tumor', 'Disease', 'MESH:D009369', (289, 294)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (109, 144)) ('Neurofibromatosis 1', 'Gene', '4763', (311, 330)) ('tumor', 'Phenotype', 'HP:0002664', (218, 223)) ('VHL', 'Gene', '7428', (259, 262)) ('neoplasia', 'Phenotype', 'HP:0002664', (128, 137)) ('hereditary syndromes', 'Disease', (54, 74)) ('neurofibromatosis type 1', 'Gene', (150, 174)) ('tumor', 'Phenotype', 'HP:0002664', (289, 294)) ('Von Hippel Lindau', 'Disease', (240, 257)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (118, 137)) ('RET', 'Gene', '5979', (280, 283)) 42551 31307198 Since the beginning of the 21st century, it has become apparent that about 35% of sporadic PPCs are due to a germline mutation in one of susceptible genes. ('due to', 'Reg', (100, 106)) ('PPCs', 'Disease', (91, 95)) ('germline mutation', 'Var', (109, 126)) ('PPCs', 'Disease', 'MESH:D010673', (91, 95)) 42557 31307198 In C1A, DNA and histone hypermethylation is observed in SDHx, fumarate hydratase (FH) and malate dehydrogenase 2 (MDH2) gene linked tumors. ('linked tumors', 'Disease', (125, 138)) ('linked tumors', 'Disease', 'MESH:D009369', (125, 138)) ('malate dehydrogenase 2', 'Gene', (90, 112)) ('MDH2', 'Gene', (114, 118)) ('malate dehydrogenase 2', 'Gene', '4191', (90, 112)) ('SDH', 'Gene', '6390', (56, 59)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('histone hypermethylation', 'Var', (16, 40)) ('fumarate hydratase', 'Gene', '2271', (62, 80)) ('tumors', 'Phenotype', 'HP:0002664', (132, 138)) ('fumarate hydratase', 'Gene', (62, 80)) ('MDH2', 'Gene', '4191', (114, 118)) ('SDH', 'Gene', (56, 59)) ('C1A', 'Disease', (3, 6)) ('FH', 'Gene', '2271', (82, 84)) 42564 31307198 The latter also happens in VHL mutations. ('mutations', 'Var', (31, 40)) ('VHL', 'Gene', '7428', (27, 30)) ('VHL', 'Gene', (27, 30)) 42565 31307198 have recently described a hypermethylator phenotype in SDH-related paragangliomas. ('SDH', 'Gene', '6390', (55, 58)) ('SDH', 'Gene', (55, 58)) ('paragangliomas', 'Disease', 'MESH:D010235', (67, 81)) ('hypermethylator', 'Var', (26, 41)) ('paragangliomas', 'Disease', (67, 81)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) ('paragangliomas', 'Phenotype', 'HP:0002668', (67, 81)) 42569 31307198 The discovery of SDHD mutations in families with paraganglioma syndrome type 1 (PGL1) was in 2000. ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (49, 71)) ('SDHD', 'Gene', '6392', (17, 21)) ('SDHD', 'Gene', (17, 21)) ('mutations', 'Var', (22, 31)) ('paraganglioma', 'Phenotype', 'HP:0002668', (49, 62)) ('paraganglioma syndrome', 'Disease', (49, 71)) 42572 31307198 Later in 2009, Pasini and Stratakis extensively reviewed 95 international manuscripts on SDHx mutations comprising a total of 395 SDHD mutation carriers. ('SDH', 'Gene', (89, 92)) ('SDH', 'Gene', (130, 133)) ('mutations', 'Var', (94, 103)) ('SDHD', 'Gene', (130, 134)) ('SDHD', 'Gene', '6392', (130, 134)) ('SDH', 'Gene', '6390', (89, 92)) ('SDH', 'Gene', '6390', (130, 133)) 42573 31307198 Since then, several other large patient case series have also been reported, describing the genotype-phenotype correlation of SDHD mutations. ('mutations', 'Var', (131, 140)) ('patient', 'Species', '9606', (32, 39)) ('SDHD', 'Gene', (126, 130)) ('SDHD', 'Gene', '6392', (126, 130)) 42577 31307198 SDHD mutations are common in HNPGLs, which are vastly biochemically silent, that is, with the exception of 20%, that secrete dopamine and/or its metabolite methoxytyramine. ('metabolite methoxytyramine', 'MPA', (145, 171)) ('HNPGLs', 'Disease', (29, 35)) ('mutations', 'Var', (5, 14)) ('dopamine', 'Chemical', 'MESH:D004298', (125, 133)) ('SDHD', 'Gene', '6392', (0, 4)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (156, 171)) ('SDHD', 'Gene', (0, 4)) ('secrete dopamine', 'MPA', (117, 133)) ('HNPGLs', 'Phenotype', 'HP:0002864', (29, 35)) 42579 31307198 Although SDHD mutations can be inherited both via the maternal and paternal lines, paragangliomas almost never develop after maternal transmission of the mutation. ('SDHD', 'Gene', '6392', (9, 13)) ('paragangliomas', 'Disease', (83, 97)) ('paragangliomas', 'Disease', 'MESH:D010235', (83, 97)) ('SDHD', 'Gene', (9, 13)) ('paragangliomas', 'Phenotype', 'HP:0002668', (83, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('mutations', 'Var', (14, 23)) 42580 31307198 As maternally derived SDHD mutation carriers will still pass the mutation to their offspring in 50% of cases, PGL1 can skip generations. ('mutation', 'Var', (27, 35)) ('SDHD', 'Gene', (22, 26)) ('SDHD', 'Gene', '6392', (22, 26)) ('mutation', 'Var', (65, 73)) 42581 31307198 This may in part explain the occurrence of SDHD germline mutations in apparently nonfamilial cases. ('germline mutations', 'Var', (48, 66)) ('SDHD', 'Gene', '6392', (43, 47)) ('SDHD', 'Gene', (43, 47)) 42582 31307198 Furthermore, an individual who inherits an SDHD pathogenic variant from his/her father is at high risk of manifesting paragangliomas and, to a lesser extent, pheochromocytomas. ('pheochromocytomas', 'Disease', (158, 175)) ('SDHD', 'Gene', '6392', (43, 47)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (158, 175)) ('SDHD', 'Gene', (43, 47)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (158, 175)) ('paragangliomas', 'Disease', (118, 132)) ('paragangliomas', 'Disease', 'MESH:D010235', (118, 132)) ('variant', 'Var', (59, 66)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (158, 174)) ('paraganglioma', 'Phenotype', 'HP:0002668', (118, 131)) ('paragangliomas', 'Phenotype', 'HP:0002668', (118, 132)) 42584 31307198 Neumann et al first published data on age-related penetrance in SDHD mutation carriers in 2004. ('mutation', 'Var', (69, 77)) ('SDHD', 'Gene', (64, 68)) ('SDHD', 'Gene', '6392', (64, 68)) 42585 31307198 SDHD mutations showed 50% penetrance by age 31 rising to 86% by the age of 50. ('SDHD', 'Gene', (0, 4)) ('SDHD', 'Gene', '6392', (0, 4)) ('mutations', 'Var', (5, 14)) 42590 31307198 van Hulsteijn et al presented a systematic literature review and meta-analysis in 2012 on the risk of malignant paragangliomas in SDHD mutation carriers. ('malignant paragangliomas', 'Disease', 'MESH:D010235', (102, 126)) ('SDHD', 'Gene', (130, 134)) ('SDHD', 'Gene', '6392', (130, 134)) ('carriers', 'Reg', (144, 152)) ('paragangliomas', 'Phenotype', 'HP:0002668', (112, 126)) ('malignant paragangliomas', 'Disease', (102, 126)) ('mutation', 'Var', (135, 143)) ('paraganglioma', 'Phenotype', 'HP:0002668', (112, 125)) 42592 31307198 The pooled incidence for malignant paragangliomas was 8% in SDHD mutation carriers. ('malignant paragangliomas', 'Disease', (25, 49)) ('SDHD', 'Gene', '6392', (60, 64)) ('SDHD', 'Gene', (60, 64)) ('paragangliomas', 'Phenotype', 'HP:0002668', (35, 49)) ('malignant paragangliomas', 'Disease', 'MESH:D010235', (25, 49)) ('mutation', 'Var', (65, 73)) ('paraganglioma', 'Phenotype', 'HP:0002668', (35, 48)) 42593 31307198 Paraganglioma syndrome type 3 (PGL3) is associated with mutations of SDHC, located on chromosome 1q21. ('mutations', 'Var', (56, 65)) ('Paraganglioma syndrome', 'Disease', 'MESH:D010235', (0, 22)) ('SDHC', 'Gene', (69, 73)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('SDHC', 'Gene', '6391', (69, 73)) ('PGL3', 'Gene', '6391', (31, 35)) ('Paraganglioma syndrome', 'Disease', (0, 22)) ('associated', 'Reg', (40, 50)) ('PGL3', 'Gene', (31, 35)) 42594 31307198 In contrast to patients with PGL1 and PGL4, SDHC mutation carriers mostly present with single HNPGLs. ('SDHC', 'Gene', '6391', (44, 48)) ('patients', 'Species', '9606', (15, 23)) ('HNPGLs', 'Phenotype', 'HP:0002864', (94, 100)) ('mutation', 'Var', (49, 57)) ('PGL4', 'Gene', (38, 42)) ('PGL4', 'Gene', '6390', (38, 42)) ('SDHC', 'Gene', (44, 48)) 42598 31307198 Two large series of patients consisting of 598 and 445 patients with HNPGLs presented by Neumann et al and Burnichon et al have shown similar prevalence of 3.6% and 4.3% for SDHC mutations respectively. ('SDHC', 'Gene', (174, 178)) ('SDHC', 'Gene', '6391', (174, 178)) ('patients', 'Species', '9606', (20, 28)) ('mutations', 'Var', (179, 188)) ('patients', 'Species', '9606', (55, 63)) ('HNPGLs', 'Phenotype', 'HP:0002864', (69, 75)) 42600 31307198 Family history is positive in the minority of patients with SDHC mutations (12% to 25%), suggesting a low tumor penetrance. ('patients', 'Species', '9606', (46, 54)) ('SDHC', 'Gene', '6391', (60, 64)) ('mutations', 'Var', (65, 74)) ('tumor', 'Disease', 'MESH:D009369', (106, 111)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('SDHC', 'Gene', (60, 64)) ('tumor', 'Disease', (106, 111)) 42601 31307198 Syndrome associated with mutations of SDHB gene, located on chromosome 1p36.13, was designated as paraganglioma syndrome type 4 (PGL4). ('mutations', 'Var', (25, 34)) ('PGL4', 'Gene', (129, 133)) ('PGL4', 'Gene', '6390', (129, 133)) ('paraganglioma syndrome type 4', 'Disease', (98, 127)) ('associated', 'Reg', (9, 19)) ('paraganglioma syndrome type 4', 'Disease', 'OMIM:115310', (98, 127)) ('Syndrome', 'Disease', (0, 8)) ('SDHB', 'Gene', '6390', (38, 42)) ('SDHB', 'Gene', (38, 42)) ('paraganglioma', 'Phenotype', 'HP:0002668', (98, 111)) 42602 31307198 Patients with SDHB mutations frequently develop sPGLs (52% to 84%) and PHEOs (18% to 28%). ('PHEOs', 'Disease', 'MESH:D010673', (71, 76)) ('PHEOs', 'Phenotype', 'HP:0002666', (71, 76)) ('PHEOs', 'Disease', (71, 76)) ('sPGLs', 'Disease', (48, 53)) ('mutations', 'Var', (19, 28)) ('sPGLs', 'Disease', 'MESH:D010235', (48, 53)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', '6390', (14, 18)) ('develop', 'PosReg', (40, 47)) ('SDHB', 'Gene', (14, 18)) 42605 31307198 The estimated age-related tumor penetrance in SDHB mutation carriers is 29% at age 30 rising to 45% at age 40. ('SDHB', 'Gene', '6390', (46, 50)) ('SDHB', 'Gene', (46, 50)) ('tumor', 'Disease', 'MESH:D009369', (26, 31)) ('mutation', 'Var', (51, 59)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('tumor', 'Disease', (26, 31)) 42607 31307198 Mutations of SDHB were associated with malignant PHEOs and HNPGLs in 20.6-41% cases. ('PHEOs', 'Phenotype', 'HP:0002666', (49, 54)) ('HNPGLs', 'Disease', (59, 65)) ('malignant PHEOs', 'Disease', 'MESH:D010673', (39, 54)) ('SDHB', 'Gene', '6390', (13, 17)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (13, 17)) ('HNPGLs', 'Phenotype', 'HP:0002864', (59, 65)) ('malignant PHEOs', 'Disease', (39, 54)) ('associated', 'Reg', (23, 33)) 42608 31307198 It has also been shown that patients with a germline SDHB pathogenic variant can develop malignant PPCs at any site. ('PPCs', 'Disease', (99, 103)) ('variant', 'Var', (69, 76)) ('SDHB', 'Gene', '6390', (53, 57)) ('SDHB', 'Gene', (53, 57)) ('PPCs', 'Disease', 'MESH:D010673', (99, 103)) ('patients', 'Species', '9606', (28, 36)) ('develop', 'PosReg', (81, 88)) 42609 31307198 The systematic literature review and meta-analysis done by van Hulsteijn et al on the risk of malignant tumors in SDHB and SDHD mutation carriers, revealed a pooled incidence of 17% in the SDHB group. ('malignant tumors', 'Disease', 'MESH:D009369', (94, 110)) ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('SDHB', 'Gene', '6390', (114, 118)) ('SDHB', 'Gene', (114, 118)) ('tumors', 'Phenotype', 'HP:0002664', (104, 110)) ('SDHD', 'Gene', (123, 127)) ('SDHD', 'Gene', '6392', (123, 127)) ('mutation', 'Var', (128, 136)) ('SDHB', 'Gene', '6390', (189, 193)) ('malignant tumors', 'Disease', (94, 110)) ('SDHB', 'Gene', (189, 193)) 42611 31307198 Furthermore, multivariate analysis of a series of 54 patients done in France for malignant PPCs demonstrated that identification of SDHB mutation was the only risk factor for mortality. ('PPCs', 'Disease', (91, 95)) ('SDHB', 'Gene', (132, 136)) ('mutation', 'Var', (137, 145)) ('patients', 'Species', '9606', (53, 61)) ('PPCs', 'Disease', 'MESH:D010673', (91, 95)) ('SDHB', 'Gene', '6390', (132, 136)) 42612 31307198 The 5-year survival probability was 36% for patients with SDHB mutation versus 67% for patients without SDHB mutation. ('SDHB', 'Gene', (58, 62)) ('patients', 'Species', '9606', (44, 52)) ('mutation', 'Var', (63, 71)) ('SDHB', 'Gene', '6390', (104, 108)) ('SDHB', 'Gene', '6390', (58, 62)) ('patients', 'Species', '9606', (87, 95)) ('SDHB', 'Gene', (104, 108)) 42615 31307198 A follow-up multicenter study was undertaken in Spain and the Netherlands with the joint aims of identifying new mutation carriers and assessing the frequency of SDHAF2 mutations amongst 443 sporadic PPCs. ('mutations', 'Var', (169, 178)) ('PPCs', 'Disease', 'MESH:D010673', (200, 204)) ('SDHAF2', 'Gene', '54949', (162, 168)) ('PPCs', 'Disease', (200, 204)) ('SDHAF2', 'Gene', (162, 168)) 42616 31307198 Only one additional SDHAF2-related family was identified in Spanish patients, which interestingly carried the exact mutation, p.Gly78Arg, previously discovered in the Netherlands. ('SDHAF2', 'Gene', '54949', (20, 26)) ('SDHAF2', 'Gene', (20, 26)) ('p.Gly78Arg', 'Mutation', 'p.G78R', (126, 136)) ('p.Gly78Arg', 'Var', (126, 136)) ('patients', 'Species', '9606', (68, 76)) 42617 31307198 The same study also concluded SDHAF2 mutation analysis is justified in very young patients with isolated HNPGL without mutations in SDHD, SDHC, or SDHB, and in individuals with familial antecedents who are negative for mutations in all other risk genes. ('SDHD', 'Gene', (132, 136)) ('mutation', 'Var', (37, 45)) ('patients', 'Species', '9606', (82, 90)) ('SDHC', 'Gene', (138, 142)) ('isolated HNPGL', 'Disease', (96, 110)) ('SDHB', 'Gene', '6390', (147, 151)) ('SDHC', 'Gene', '6391', (138, 142)) ('SDHB', 'Gene', (147, 151)) ('mutations', 'Var', (119, 128)) ('SDHAF2', 'Gene', (30, 36)) ('SDHD', 'Gene', '6392', (132, 136)) ('SDHAF2', 'Gene', '54949', (30, 36)) 42619 31307198 The findings associated with the same mutation were age at diagnosis below 40 years, 100% affected at age 50, 100% with HNPGLs and 91% with multifocal tumors. ('tumor', 'Phenotype', 'HP:0002664', (151, 156)) ('multifocal tumors', 'Disease', 'None', (140, 157)) ('tumors', 'Phenotype', 'HP:0002664', (151, 157)) ('HNPGLs', 'Phenotype', 'HP:0002864', (120, 126)) ('mutation', 'Var', (38, 46)) ('HNPGLs', 'Disease', (120, 126)) ('multifocal tumors', 'Disease', (140, 157)) 42621 31307198 In 2010, the mutation in the gene of the final subunit in the mitochondrial complex, SDHA, located on chromosome 5p15 was linked to PPCs. ('SDHA', 'Gene', (85, 89)) ('PPCs', 'Disease', 'MESH:D010673', (132, 136)) ('mutation', 'Var', (13, 21)) ('PPCs', 'Disease', (132, 136)) ('SDHA', 'Gene', '6389', (85, 89)) ('linked', 'Reg', (122, 128)) 42622 31307198 Although HNPGLs have been detected with mutations in SDHA the risk of developing such tumors remains unknown. ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('HNPGLs', 'Disease', (9, 15)) ('tumors', 'Disease', (86, 92)) ('SDHA', 'Gene', '6389', (53, 57)) ('tumors', 'Disease', 'MESH:D009369', (86, 92)) ('mutations', 'Var', (40, 49)) ('tumors', 'Phenotype', 'HP:0002664', (86, 92)) ('SDHA', 'Gene', (53, 57)) ('HNPGLs', 'Phenotype', 'HP:0002864', (9, 15)) 42624 31307198 The incidence of FH mutation in PPCs is estimated at about 1%. ('FH', 'Gene', '2271', (17, 19)) ('PPCs', 'Disease', (32, 36)) ('mutation', 'Var', (20, 28)) ('PPCs', 'Disease', 'MESH:D010673', (32, 36)) 42625 31307198 Mutations in FH predispose to hereditary leiomyomatosis and renal cell carcinoma. ('hereditary leiomyomatosis and renal cell carcinoma', 'Disease', 'MESH:C535516', (30, 80)) ('carcinoma', 'Phenotype', 'HP:0030731', (71, 80)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (60, 80)) ('predispose', 'Reg', (16, 26)) ('Mutations', 'Var', (0, 9)) ('FH', 'Gene', '2271', (13, 15)) 42626 31307198 Interestingly, about 40% of cases carrying germline FH mutation presented a metastatic paragangliomas. ('germline', 'Var', (43, 51)) ('FH', 'Gene', '2271', (52, 54)) ('paragangliomas', 'Disease', 'MESH:D010235', (87, 101)) ('paragangliomas', 'Disease', (87, 101)) ('paragangliomas', 'Phenotype', 'HP:0002668', (87, 101)) ('paraganglioma', 'Phenotype', 'HP:0002668', (87, 100)) 42628 31307198 von Hippel-Lindau syndrome is caused by inactivation of the tumor suppressor gene VHL located on chromosome 3p25-p26. ('p26', 'Gene', '23423', (113, 116)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('caused by', 'Reg', (30, 39)) ('VHL', 'Gene', (82, 85)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('von Hippel-Lindau syndrome', 'Disease', (0, 26)) ('VHL', 'Gene', '7428', (82, 85)) ('tumor', 'Disease', (60, 65)) ('p26', 'Gene', (113, 116)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (0, 26)) ('inactivation', 'Var', (40, 52)) 42636 31307198 The prevalence of hereditary HNPGLs in patients with VHL mutation is reported to be 0.5%. ('mutation', 'Var', (57, 65)) ('patients', 'Species', '9606', (39, 47)) ('VHL', 'Gene', (53, 56)) ('hereditary HNPGLs', 'Disease', (18, 35)) ('VHL', 'Gene', '7428', (53, 56)) ('HNPGLs', 'Phenotype', 'HP:0002864', (29, 35)) 42642 31307198 HIF-2alpha mutations were found to disrupt prolyl hydroxylation. ('mutations', 'Var', (11, 20)) ('prolyl hydroxylation', 'MPA', (43, 63)) ('disrupt', 'NegReg', (35, 42)) ('HIF-2alpha', 'Gene', '2034', (0, 10)) ('prolyl', 'Chemical', 'MESH:C065612', (43, 49)) ('HIF-2alpha', 'Gene', (0, 10)) 42644 31307198 Thus, the longer half-life of the mutant protein results in the upregulation of downstream targets (endothelin-1, erythropoietin, glucose transporter 1, or vascular endothelial growth factor). ('erythropoietin', 'Gene', (114, 128)) ('protein', 'Protein', (41, 48)) ('endothelin-1', 'Gene', '1906', (100, 112)) ('endothelin-1', 'Gene', (100, 112)) ('glucose', 'Chemical', 'MESH:D005947', (130, 137)) ('glucose transporter 1', 'MPA', (130, 151)) ('erythropoietin', 'Gene', '2056', (114, 128)) ('upregulation', 'PosReg', (64, 76)) ('vascular endothelial growth factor', 'Gene', (156, 190)) ('vascular endothelial growth factor', 'Gene', '7422', (156, 190)) ('mutant', 'Var', (34, 40)) 42648 31307198 So far only one study described a patient with erythrocytosis and abdominal paragangliomas who was found to harbor a mutation in the PHD2 gene. ('PHD2', 'Gene', '54583', (133, 137)) ('PHD2', 'Gene', (133, 137)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (47, 61)) ('patient', 'Species', '9606', (34, 41)) ('paraganglioma', 'Phenotype', 'HP:0002668', (76, 89)) ('paragangliomas', 'Phenotype', 'HP:0002668', (76, 90)) ('erythrocytosis', 'Disease', (47, 61)) ('mutation', 'Var', (117, 125)) ('erythrocytosis', 'Disease', 'MESH:D011086', (47, 61)) ('abdominal paragangliomas', 'Disease', 'MESH:D010235', (66, 90)) ('abdominal paragangliomas', 'Disease', (66, 90)) 42650 31307198 RET mutations have been associated with increased activation of PI3K/v-Akt signals and RAS/RAF/MAPK signaling pathways. ('Akt', 'Gene', '207', (71, 74)) ('RET', 'Gene', '5979', (0, 3)) ('Akt', 'Gene', (71, 74)) ('activation', 'PosReg', (50, 60)) ('RET', 'Gene', (0, 3)) ('RAF', 'Gene', '22882', (91, 94)) ('RAF', 'Gene', (91, 94)) ('mutations', 'Var', (4, 13)) 42657 31307198 Patients with FMTC do not have a risk of developing PHEOs. ('FMTC', 'Var', (14, 18)) ('Patients', 'Species', '9606', (0, 8)) ('PHEOs', 'Phenotype', 'HP:0002666', (52, 57)) ('MTC', 'Phenotype', 'HP:0002865', (15, 18)) ('PHEOs', 'Disease', 'MESH:D010673', (52, 57)) ('PHEOs', 'Disease', (52, 57)) 42663 31307198 Mutations of the gene lead to the neurofibromatosis type 1 syndrome (NF1). ('NF1', 'Gene', '4763', (69, 72)) ('lead to', 'Reg', (22, 29)) ('neurofibromatosis type 1 syndrome', 'Disease', (34, 67)) ('Mutations', 'Var', (0, 9)) ('neurofibromatosis type 1 syndrome', 'Disease', 'MESH:D009456', (34, 67)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (34, 51)) ('NF1', 'Gene', (69, 72)) 42667 31307198 Recently, somatic NF1 mutations have been linked to the pathogenesis of apparently sporadic PPCs. ('linked', 'Reg', (42, 48)) ('PPCs', 'Disease', (92, 96)) ('PPCs', 'Disease', 'MESH:D010673', (92, 96)) ('mutations', 'Var', (22, 31)) ('NF1', 'Gene', (18, 21)) ('NF1', 'Gene', '4763', (18, 21)) 42670 31307198 Mutations of TMEM127 have been related to PHEOs. ('TMEM127', 'Gene', '55654', (13, 20)) ('PHEOs', 'Disease', 'MESH:D010673', (42, 47)) ('PHEOs', 'Phenotype', 'HP:0002666', (42, 47)) ('Mutations', 'Var', (0, 9)) ('related', 'Reg', (31, 38)) ('PHEOs', 'Disease', (42, 47)) ('TMEM127', 'Gene', (13, 20)) 42673 31307198 It has been shown that the mammalian target of rapamycin complex 1 (mTORC1) is specifically affected by TMEM127 knockdown, leading to increased phosphorylation of targets of mTORC1. ('phosphorylation', 'MPA', (144, 159)) ('mammalian', 'Species', '9606', (27, 36)) ('TMEM127', 'Gene', '55654', (104, 111)) ('mTORC1', 'Gene', '382056', (68, 74)) ('rapamycin', 'Chemical', 'MESH:D020123', (47, 56)) ('mTORC1', 'Gene', (174, 180)) ('knockdown', 'Var', (112, 121)) ('mTORC1', 'Gene', '382056', (174, 180)) ('mTORC1', 'Gene', (68, 74)) ('increased', 'PosReg', (134, 143)) ('TMEM127', 'Gene', (104, 111)) 42674 31307198 Genetic studies of PPC patients indicate a low prevalence of TMEM127 mutations (approximately 2%). ('mutations', 'Var', (69, 78)) ('patients', 'Species', '9606', (23, 31)) ('TMEM127', 'Gene', '55654', (61, 68)) ('TMEM127', 'Gene', (61, 68)) ('PPC', 'Disease', (19, 22)) 42676 31307198 In most cases, mutation carriers suffered from PHEOs only (unilateral as well as bilateral tumors) and secreted a high level of metanephrines. ('tumors', 'Phenotype', 'HP:0002664', (91, 97)) ('mutation', 'Var', (15, 23)) ('bilateral tumors', 'Disease', 'MESH:D009396', (81, 97)) ('PHEOs', 'Disease', 'MESH:D010673', (47, 52)) ('PHEOs', 'Phenotype', 'HP:0002666', (47, 52)) ('secreted', 'MPA', (103, 111)) ('suffered', 'Reg', (33, 41)) ('PHEOs', 'Disease', (47, 52)) ('metanephrines', 'Chemical', 'MESH:D008676', (128, 141)) ('bilateral tumors', 'Disease', (81, 97)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('high level of metanephrines', 'MPA', (114, 141)) 42680 31307198 MAX mutations are associated with bilateral PHEOs and show apparent paternal transmission of the disease. ('MAX', 'Gene', (0, 3)) ('PHEOs', 'Disease', 'MESH:D010673', (44, 49)) ('PHEOs', 'Phenotype', 'HP:0002666', (44, 49)) ('MAX', 'Gene', '4149', (0, 3)) ('associated', 'Reg', (18, 28)) ('PHEOs', 'Disease', (44, 49)) ('mutations', 'Var', (4, 13)) 42684 31307198 Genetic mutations of NF1 and RET are known to affect RAS signaling and are associated with the formation of PPCs. ('PPCs', 'Disease', 'MESH:D010673', (108, 112)) ('RET', 'Gene', (29, 32)) ('RAS signaling', 'MPA', (53, 66)) ('mutations', 'Var', (8, 17)) ('affect', 'Reg', (46, 52)) ('PPCs', 'Disease', (108, 112)) ('NF1', 'Gene', (21, 24)) ('RET', 'Gene', '5979', (29, 32)) ('NF1', 'Gene', '4763', (21, 24)) ('associated', 'Reg', (75, 85)) 42685 31307198 However association of RAS mutation itself with PPCs was reported in a series of 4 male patients (3 presenting with PHEOs and 1 with sPGL) in 2013. ('PPCs', 'Disease', 'MESH:D010673', (48, 52)) ('association', 'Reg', (8, 19)) ('PHEOs', 'Phenotype', 'HP:0002666', (116, 121)) ('patients', 'Species', '9606', (88, 96)) ('PPCs', 'Disease', (48, 52)) ('PHEOs', 'Disease', 'MESH:D010673', (116, 121)) ('PHEOs', 'Disease', (116, 121)) ('mutation', 'Var', (27, 35)) ('RAS', 'Gene', (23, 26)) 42687 31307198 Before 2000, only one genetically determined form of the disease was thought to exist, but it has now been shown that about 30% of paragangliomas are genetically determined due to the presence of mutation in one of the 15 susceptibility genes identified to date. ('mutation', 'Var', (196, 204)) ('paragangliomas', 'Disease', (131, 145)) ('paragangliomas', 'Disease', 'MESH:D010235', (131, 145)) ('paragangliomas', 'Phenotype', 'HP:0002668', (131, 145)) ('paraganglioma', 'Phenotype', 'HP:0002668', (131, 144)) ('presence', 'Reg', (184, 192)) 42692 31307198 Germline mutations in SDHA and SDHC are associated with HNPGLs and sympathetic paragangliomas. ('Germline mutations', 'Var', (0, 18)) ('SDHA', 'Gene', (22, 26)) ('sympathetic paragangliomas', 'Disease', 'MESH:D010235', (67, 93)) ('HNPGLs', 'Disease', (56, 62)) ('SDHA', 'Gene', '6389', (22, 26)) ('paragangliomas', 'Phenotype', 'HP:0002668', (79, 93)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('SDHC', 'Gene', (31, 35)) ('SDHC', 'Gene', '6391', (31, 35)) ('HNPGLs', 'Phenotype', 'HP:0002864', (56, 62)) ('associated', 'Reg', (40, 50)) ('sympathetic paragangliomas', 'Disease', (67, 93)) 42693 31307198 SDHAF2 mutations are associated with HNPGLs. ('SDHAF2', 'Gene', '54949', (0, 6)) ('HNPGLs', 'Phenotype', 'HP:0002864', (37, 43)) ('SDHAF2', 'Gene', (0, 6)) ('associated', 'Reg', (21, 31)) ('HNPGLs', 'Disease', (37, 43)) ('mutations', 'Var', (7, 16)) 42694 31307198 SDHD and SDHB mutations are associated with HNPGLs, sPGLs and PHEOs, whilst TMEM127 and MAX with PHEOs. ('SDHB', 'Gene', (9, 13)) ('TMEM127', 'Gene', '55654', (76, 83)) ('SDHD', 'Gene', '6392', (0, 4)) ('PHEOs', 'Phenotype', 'HP:0002666', (62, 67)) ('sPGLs', 'Disease', (52, 57)) ('SDHD', 'Gene', (0, 4)) ('MAX', 'Gene', (88, 91)) ('PHEOs', 'Disease', (62, 67)) ('PHEOs', 'Disease', 'MESH:D010673', (97, 102)) ('mutations', 'Var', (14, 23)) ('associated', 'Reg', (28, 38)) ('HNPGLs', 'Phenotype', 'HP:0002864', (44, 50)) ('HNPGLs', 'Disease', (44, 50)) ('sPGLs', 'Disease', 'MESH:D010235', (52, 57)) ('PHEOs', 'Phenotype', 'HP:0002666', (97, 102)) ('SDHB', 'Gene', '6390', (9, 13)) ('TMEM127', 'Gene', (76, 83)) ('PHEOs', 'Disease', 'MESH:D010673', (62, 67)) ('MAX', 'Gene', '4149', (88, 91)) ('PHEOs', 'Disease', (97, 102)) 42695 31307198 SDHB mutations are generally associated with a higher incidence of malignant tumors compared to mutations in other SDHx genes. ('tumors', 'Phenotype', 'HP:0002664', (77, 83)) ('malignant tumors', 'Disease', 'MESH:D009369', (67, 83)) ('SDH', 'Gene', (0, 3)) ('SDH', 'Gene', '6390', (115, 118)) ('mutations', 'Var', (5, 14)) ('SDHB', 'Gene', '6390', (0, 4)) ('tumor', 'Phenotype', 'HP:0002664', (77, 82)) ('SDH', 'Gene', (115, 118)) ('malignant tumors', 'Disease', (67, 83)) ('SDHB', 'Gene', (0, 4)) ('SDH', 'Gene', '6390', (0, 3)) 42696 31307198 Furthermore, germline mutations in SDHx also occur in around 30% of HNPGLs that are regarded sporadic due to the absence of a family history, suggesting that these HNPGLs may be "occult familial" cases. ('SDH', 'Gene', '6390', (35, 38)) ('HNPGLs', 'Phenotype', 'HP:0002864', (68, 74)) ('HNPGLs', 'Phenotype', 'HP:0002864', (164, 170)) ('occur', 'Reg', (45, 50)) ('germline mutations', 'Var', (13, 31)) ('SDH', 'Gene', (35, 38)) ('HNPGLs', 'Disease', (68, 74)) 42698 31307198 If PPCs are found without any syndromic or familial presentation, metastatic tumors should be tested for SDHB mutations. ('tumors', 'Disease', (77, 83)) ('tested', 'Reg', (94, 100)) ('tumors', 'Disease', 'MESH:D009369', (77, 83)) ('tumors', 'Phenotype', 'HP:0002664', (77, 83)) ('SDHB', 'Gene', '6390', (105, 109)) ('mutations', 'Var', (110, 119)) ('syndromic', 'Disease', 'MESH:D061325', (30, 39)) ('PPCs', 'Disease', (3, 7)) ('SDHB', 'Gene', (105, 109)) ('tumor', 'Phenotype', 'HP:0002664', (77, 82)) ('syndromic', 'Disease', (30, 39)) ('PPCs', 'Disease', 'MESH:D010673', (3, 7)) 42699 31307198 Multiple abdominal paragangliomas should be first tested for the presence of SDHB mutations and female patients with multiple paragangliomas associated with somatostatinomas, should be first tested for HIF2alpha mutations. ('paragangliomas', 'Phenotype', 'HP:0002668', (126, 140)) ('multiple paragangliomas', 'Disease', (117, 140)) ('paraganglioma', 'Phenotype', 'HP:0002668', (19, 32)) ('paraganglioma', 'Phenotype', 'HP:0002668', (126, 139)) ('SDHB', 'Gene', '6390', (77, 81)) ('Multiple abdominal paragangliomas', 'Disease', 'MESH:D010235', (0, 33)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (117, 140)) ('somatostatinomas', 'Disease', 'MESH:D013005', (157, 173)) ('mutations', 'Var', (82, 91)) ('HIF2alpha', 'Gene', '2034', (202, 211)) ('SDHB', 'Gene', (77, 81)) ('paragangliomas', 'Phenotype', 'HP:0002668', (19, 33)) ('patients', 'Species', '9606', (103, 111)) ('somatostatinomas', 'Disease', (157, 173)) ('HIF2alpha', 'Gene', (202, 211)) ('Multiple abdominal paragangliomas', 'Disease', (0, 33)) 42701 31307198 Various recommendations have been suggested regarding early detection of mutations depending on family history, tumor site, character and location, multiplicity and presence of metastasis. ('tumor', 'Disease', (112, 117)) ('tumor', 'Disease', 'MESH:D009369', (112, 117)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('mutations', 'Var', (73, 82)) 42705 28977863 SFTA1P, LINC01272, GATA6-AS1 and MIR3945HG were closely related to the survival time of LUSC. ('GATA6-AS1', 'Var', (19, 28)) ('SFTA1P', 'Gene', '207107', (0, 6)) ('MIR3945HG', 'Gene', (33, 42)) ('SFTA1P', 'Gene', (0, 6)) ('LUSC', 'Phenotype', 'HP:0030359', (88, 92)) ('MIR3945HG', 'Gene', '731424', (33, 42)) ('LINC01272', 'Gene', (8, 17)) ('LINC01272', 'Gene', '100506115', (8, 17)) ('survival time of LUSC', 'CPA', (71, 92)) ('related', 'Reg', (56, 63)) 42716 28977863 The Cancer Genome Atlas (TCGA) database of LUSC has facilitated the analysis on the high throughput data of various genomic alterations, including non-coding RNAs. ('non-coding', 'Var', (147, 157)) ('Cancer', 'Phenotype', 'HP:0002664', (4, 10)) ('LUSC', 'Phenotype', 'HP:0030359', (43, 47)) ('Cancer Genome Atlas', 'Disease', (4, 23)) ('Cancer Genome Atlas', 'Disease', 'MESH:D009369', (4, 23)) 42722 28977863 Survival analyses showed that SFTA1P, LINC01272, GATA6-AS1 and MIR3945HG were significantly related to the survival time of LUSC (Figure 4). ('GATA6-AS1', 'Var', (49, 58)) ('LUSC', 'Phenotype', 'HP:0030359', (124, 128)) ('LINC01272', 'Gene', '100506115', (38, 47)) ('MIR3945HG', 'Gene', '731424', (63, 72)) ('related', 'Reg', (92, 99)) ('LINC01272', 'Gene', (38, 47)) ('survival time of LUSC', 'CPA', (107, 128)) ('SFTA1P', 'Gene', '207107', (30, 36)) ('MIR3945HG', 'Gene', (63, 72)) ('SFTA1P', 'Gene', (30, 36)) 42730 28977863 The OncoPrint from cBioPortal showed that 14% (69/501) cases with genetic alterations could be obtained (Figure 8A), except RP1-78O14.1, whose data were not available in cBioPortal. ('RP1', 'Gene', '6101', (124, 127)) ('genetic alterations', 'Var', (66, 85)) ('RP1', 'Gene', (124, 127)) 42731 28977863 And only SFTA1P, LINC00968, LINC00961, and FENDRR had genetic alterations, including amplification, deep deletion and mRNA upregulation. ('deep deletion', 'Var', (100, 113)) ('LINC00968', 'Gene', (17, 26)) ('LINC00968', 'Gene', '100507632', (17, 26)) ('mRNA', 'MPA', (118, 122)) ('LINC00961', 'Gene', '158376', (28, 37)) ('SFTA1P', 'Gene', '207107', (9, 15)) ('LINC00961', 'Gene', (28, 37)) ('upregulation', 'PosReg', (123, 135)) ('amplification', 'Var', (85, 98)) ('SFTA1P', 'Gene', (9, 15)) 42737 28977863 In these patients, the mean expression level of LINC00968 was notably lower in LUSC tissues (0.3343+-0.08582) than that of non-cancerous lung tissues (0.8258+-0.1469; P=0.0085, Figure 10A). ('LUSC', 'Phenotype', 'HP:0030359', (79, 83)) ('LINC00968', 'Gene', (48, 57)) ('patients', 'Species', '9606', (9, 17)) ('non-cancerous lung', 'Disease', 'MESH:D002289', (123, 141)) ('cancer', 'Phenotype', 'HP:0002664', (127, 133)) ('LUSC', 'Disease', (79, 83)) ('LINC00968', 'Gene', '100507632', (48, 57)) ('non-cancerous lung', 'Disease', (123, 141)) ('lower', 'NegReg', (70, 75)) ('0.3343+-0.08582', 'Var', (93, 108)) ('expression level', 'MPA', (28, 44)) 42749 28977863 In the support of the result, GATA6-AS1 might act as a tumor suppressor in the several cancers including BLCA, CESC, ESCA, LUAD, pheochromocytoma and paraganglioma (PCPG) and UCEC. ('CESC', 'Disease', (111, 115)) ('cancers', 'Disease', (87, 94)) ('tumor', 'Disease', 'MESH:D009369', (55, 60)) ('paraganglioma', 'Phenotype', 'HP:0002668', (150, 163)) ('BLCA', 'Disease', (105, 109)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('ESCA', 'Phenotype', 'HP:0011459', (117, 121)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (129, 163)) ('cancers', 'Phenotype', 'HP:0002664', (87, 94)) ('GATA6-AS1', 'Var', (30, 39)) ('ESCA', 'Disease', (117, 121)) ('tumor', 'Disease', (55, 60)) ('UCEC', 'Disease', (175, 179)) ('cancer', 'Phenotype', 'HP:0002664', (87, 93)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (129, 145)) ('LUAD', 'Phenotype', 'HP:0030078', (123, 127)) ('cancers', 'Disease', 'MESH:D009369', (87, 94)) ('LUAD', 'Disease', (123, 127)) 42753 28977863 In LUAD patients, EGFR-activating somatic mutations in exons 18/19/20/21 modify the sensitivity (namely exon 21 L858R, exon 19 deletion) or resistance (namely exon 20 T790M and/or insertion) to tyrosine kinase inhibitor (TKI) mediated targeted therapeutic strategies. ('modify', 'Reg', (73, 79)) ('exon 19 deletion', 'Var', (119, 135)) ('L858R', 'Mutation', 'rs121434568', (112, 117)) ('EGFR', 'Gene', '1956', (18, 22)) ('T790M', 'Mutation', 'rs121434569', (167, 172)) ('LUAD', 'Phenotype', 'HP:0030078', (3, 7)) ('T790M', 'Var', (167, 172)) ('EGFR', 'Gene', (18, 22)) ('resistance', 'MPA', (140, 150)) ('deletion', 'Var', (127, 135)) ('L858R', 'Var', (112, 117)) ('sensitivity', 'MPA', (84, 95)) ('insertion', 'Var', (180, 189)) ('patients', 'Species', '9606', (8, 16)) 42755 28977863 Ten lncRNAs with the highest diagnostic value (SFTA1P, LINC00968, LINC00961, LINC01572, RP1-78O14.1, FENDRR, LINC01314, LINC01272, GATA6-AS1, and MIR3945HG) were selected for further investigation of their clinical roles in LUSC. ('LUSC', 'Phenotype', 'HP:0030359', (224, 228)) ('MIR3945HG', 'Gene', '731424', (146, 155)) ('LINC01572', 'Gene', (77, 86)) ('LINC01572', 'Gene', '101927957', (77, 86)) ('LINC00968', 'Gene', '100507632', (55, 64)) ('clinical', 'Species', '191496', (206, 214)) ('SFTA1P', 'Gene', (47, 53)) ('LINC01272', 'Gene', '100506115', (120, 129)) ('LINC00961', 'Gene', '158376', (66, 75)) ('LINC01314', 'Gene', (109, 118)) ('LINC01272', 'Gene', (120, 129)) ('FENDRR', 'Var', (101, 107)) ('LINC00961', 'Gene', (66, 75)) ('RP1', 'Gene', (88, 91)) ('MIR3945HG', 'Gene', (146, 155)) ('LINC00968', 'Gene', (55, 64)) ('RP1', 'Gene', '6101', (88, 91)) ('SFTA1P', 'Gene', '207107', (47, 53)) ('LINC01314', 'Gene', '100996492', (109, 118)) 42756 28977863 EGFR mutations are extremely rare (<5%) in LUSC; nonetheless, other genetic alterations, like overexpression and gene amplification are much common in LUSC, which play pivotal roles in the biological process and disease development of LUSC. ('LUSC', 'Disease', (151, 155)) ('gene amplification', 'Var', (113, 131)) ('EGFR', 'Gene', (0, 4)) ('common', 'Reg', (141, 147)) ('LUSC', 'Phenotype', 'HP:0030359', (235, 239)) ('mutations', 'Var', (5, 14)) ('LUSC', 'Phenotype', 'HP:0030359', (43, 47)) ('LUSC', 'Phenotype', 'HP:0030359', (151, 155)) ('EGFR', 'Gene', '1956', (0, 4)) 42761 28977863 The top 10 lncRNAs (SFTA1P, LINC00968, LINC00961, LINC01572, RP1-78O14.1, FENDRR, LINC01314, LINC01272, GATA6-AS1, and MIR3945HG) had extremely high diagnostic values for LUSC, since the AUCs were all over 0.99. ('LINC00968', 'Gene', (28, 37)) ('LINC00961', 'Gene', (39, 48)) ('LINC01314', 'Gene', '100996492', (82, 91)) ('SFTA1P', 'Gene', '207107', (20, 26)) ('RP1', 'Gene', (61, 64)) ('LINC01572', 'Gene', (50, 59)) ('LINC00968', 'Gene', '100507632', (28, 37)) ('LINC01572', 'Gene', '101927957', (50, 59)) ('RP1', 'Gene', '6101', (61, 64)) ('LUSC', 'Disease', (171, 175)) ('MIR3945HG', 'Gene', (119, 128)) ('SFTA1P', 'Gene', (20, 26)) ('LINC01272', 'Gene', '100506115', (93, 102)) ('LINC01314', 'Gene', (82, 91)) ('LUSC', 'Phenotype', 'HP:0030359', (171, 175)) ('LINC00961', 'Gene', '158376', (39, 48)) ('MIR3945HG', 'Gene', '731424', (119, 128)) ('LINC01272', 'Gene', (93, 102)) ('FENDRR', 'Var', (74, 80)) 42769 28977863 Down-regulation of FENDRR was found in gastric cancer and moreover, FENDRR was closely related to the poor prognosis in gastric cancer. ('FENDRR', 'Var', (68, 74)) ('gastric cancer', 'Disease', (39, 53)) ('FENDRR', 'Gene', (19, 25)) ('gastric cancer', 'Disease', 'MESH:D013274', (39, 53)) ('gastric cancer', 'Disease', (120, 134)) ('gastric cancer', 'Disease', 'MESH:D013274', (120, 134)) ('Down-regulation', 'NegReg', (0, 15)) ('gastric cancer', 'Phenotype', 'HP:0012126', (39, 53)) ('cancer', 'Phenotype', 'HP:0002664', (128, 134)) ('cancer', 'Phenotype', 'HP:0002664', (47, 53)) ('gastric cancer', 'Phenotype', 'HP:0012126', (120, 134)) 42774 28977863 SNP rs11256676 in Phenotypes DMFS5mand of Chr. ('Chr', 'Disease', (42, 45)) ('rs11256676', 'Mutation', 'rs11256676', (4, 14)) ('DMFS5mand', 'Var', (29, 38)) 42781 28977863 Furthermore, the genetic alterations can also regulate the function of certain lncRNA, and thus influence the clinical outcome. ('regulate', 'Reg', (46, 54)) ('clinical', 'Species', '191496', (110, 118)) ('function', 'MPA', (59, 67)) ('genetic alterations', 'Var', (17, 36)) ('influence', 'Reg', (96, 105)) 42782 28977863 Only several studies explored single lncRNAs and their genetic variants in lung cancer. ('lung cancer', 'Disease', (75, 86)) ('lung cancer', 'Phenotype', 'HP:0100526', (75, 86)) ('variants', 'Var', (63, 71)) ('cancer', 'Phenotype', 'HP:0002664', (80, 86)) ('lung cancer', 'Disease', 'MESH:D008175', (75, 86)) 42783 28977863 For instance, among the advanced lung cancer patients, cases with rs3200401 CT and CT + TT genotypes in MALAT1 had clearly better prognosis than those with the MALAT1 rs3200401 CC genotype. ('lung cancer', 'Phenotype', 'HP:0100526', (33, 44)) ('rs3200401', 'Mutation', 'rs3200401', (66, 75)) ('cancer', 'Phenotype', 'HP:0002664', (38, 44)) ('better', 'PosReg', (123, 129)) ('rs3200401', 'Var', (66, 75)) ('MALAT1', 'Gene', '378938', (104, 110)) ('MALAT1', 'Gene', '378938', (160, 166)) ('MALAT1', 'Gene', (104, 110)) ('lung cancer', 'Disease', 'MESH:D008175', (33, 44)) ('patients', 'Species', '9606', (45, 53)) ('rs3200401', 'Mutation', 'rs3200401', (167, 176)) ('MALAT1', 'Gene', (160, 166)) ('lung cancer', 'Disease', (33, 44)) 42784 28977863 SNP rs114020893 of NEXN-AS1 at 1p31.1 might also contribute to lung cancer susceptibility. ('cancer', 'Phenotype', 'HP:0002664', (68, 74)) ('lung cancer', 'Disease', 'MESH:D008175', (63, 74)) ('NEXN-AS1', 'Gene', '374987', (19, 27)) ('NEXN-AS1', 'Gene', (19, 27)) ('rs114020893', 'Mutation', 'rs114020893', (4, 15)) ('lung cancer', 'Disease', (63, 74)) ('lung cancer', 'Phenotype', 'HP:0100526', (63, 74)) ('contribute', 'Reg', (49, 59)) ('SNP', 'Var', (0, 3)) 42785 28977863 In the current study, gene amplification, deep deletion and mRNA upregulation were detected in SFTA1P, LINC00968, LINC00961 and FENDRR and these genetic alterations of the lncRNAs showed a close correlation with survival of LUSC. ('SFTA1P', 'Gene', (95, 101)) ('LUSC', 'Phenotype', 'HP:0030359', (224, 228)) ('LINC00968', 'Gene', (103, 112)) ('LINC00968', 'Gene', '100507632', (103, 112)) ('mRNA', 'MPA', (60, 64)) ('LINC00961', 'Gene', '158376', (114, 123)) ('gene amplification', 'Var', (22, 40)) ('SFTA1P', 'Gene', '207107', (95, 101)) ('upregulation', 'PosReg', (65, 77)) ('deep deletion', 'Var', (42, 55)) ('LINC00961', 'Gene', (114, 123)) 42787 28977863 Overall, we show a signature of aberrantly expressed lncRNAs in LUSC tissues and the top 10 of them have great clinical value to act as diagnostic biomarkers, and indicators to evaluate the survival and progression of LUSC. ('aberrantly expressed', 'Var', (32, 52)) ('clinical', 'Species', '191496', (111, 119)) ('lncRNAs', 'Gene', (53, 60)) ('LUSC', 'Phenotype', 'HP:0030359', (64, 68)) ('LUSC', 'Phenotype', 'HP:0030359', (218, 222)) 42803 27989324 Mutations in MDH2, Encoding a Krebs Cycle Enzyme, Cause Early-Onset Severe Encephalopathy MDH2 encodes mitochondrial malate dehydrogenase (MDH), which is essential for the conversion of malate to oxaloacetate as part of the proper functioning of the Krebs cycle. ('MDH2', 'Gene', (13, 17)) ('Krebs', 'Chemical', '-', (30, 35)) ('MDH', 'Gene', (13, 16)) ('Encephalopathy', 'Phenotype', 'HP:0001298', (75, 89)) ('MDH2', 'Gene', '4191', (90, 94)) ('malate', 'Chemical', 'MESH:C030298', (186, 192)) ('Krebs', 'Chemical', '-', (250, 255)) ('MDH', 'Gene', '4191', (13, 16)) ('Cause', 'Reg', (50, 55)) ('Mutations', 'Var', (0, 9)) ('MDH', 'Gene', (90, 93)) ('Encephalopathy', 'Disease', (75, 89)) ('MDH2', 'Gene', '4191', (13, 17)) ('MDH', 'Gene', (139, 142)) ('MDH2', 'Gene', (90, 94)) ('oxaloacetate', 'Chemical', 'MESH:D062907', (196, 208)) ('MDH', 'Gene', '4191', (90, 93)) ('MDH', 'Gene', '4191', (139, 142)) ('malate', 'Chemical', 'MESH:C030298', (117, 123)) ('Encephalopathy', 'Disease', 'MESH:D001927', (75, 89)) 42804 27989324 We report bi-allelic pathogenic mutations in MDH2 in three unrelated subjects presenting with early-onset generalized hypotonia, psychomotor delay, refractory epilepsy, and elevated lactate in the blood and cerebrospinal fluid. ('psychomotor delay', 'Disease', (129, 146)) ('elevated lactate in the blood', 'Phenotype', 'HP:0002151', (173, 202)) ('MDH2', 'Gene', (45, 49)) ('elevated lactate in the blood and cerebrospinal fluid', 'Phenotype', 'HP:0002490', (173, 226)) ('elevated', 'PosReg', (173, 181)) ('psychomotor delay', 'Disease', 'MESH:D011596', (129, 146)) ('epilepsy', 'Phenotype', 'HP:0001250', (159, 167)) ('refractory epilepsy', 'Disease', (148, 167)) ('refractory epilepsy', 'Disease', 'MESH:D000069279', (148, 167)) ('psychomotor delay', 'Phenotype', 'HP:0001263', (129, 146)) ('generalized hypotonia', 'Disease', (106, 127)) ('mutations', 'Var', (32, 41)) ('lactate', 'MPA', (182, 189)) ('lactate', 'Chemical', 'MESH:D019344', (182, 189)) ('hypotonia', 'Phenotype', 'HP:0001290', (118, 127)) ('generalized hypotonia', 'Phenotype', 'HP:0001290', (106, 127)) ('generalized hypotonia', 'Disease', 'MESH:D009123', (106, 127)) ('pathogenic', 'Reg', (21, 31)) 42809 27989324 We show that loss-of-function mutations in MDH2 are also associated with severe neurological clinical presentations in children. ('MDH2', 'Gene', (43, 47)) ('loss-of-function', 'NegReg', (13, 29)) ('children', 'Species', '9606', (119, 127)) ('mutations', 'Var', (30, 39)) ('severe neurological clinical presentations', 'Disease', (73, 115)) 42814 27989324 The Krebs cycle is intimately linked to the RC, and Krebs cycle defects are among the diseases that mimic or cause RC deficiencies. ('cause', 'Reg', (109, 114)) ('Krebs', 'Chemical', '-', (4, 9)) ('RC deficiencies', 'Disease', (115, 130)) ('Krebs', 'Chemical', '-', (52, 57)) ('defects', 'Var', (64, 71)) ('RC deficiencies', 'Disease', 'MESH:D007153', (115, 130)) 42816 27989324 Here, we show that mutations in MDH2 (MIM: 154100), encoding the Krebs cycle enzyme mitochondrial malate dehydrogenase (MDH), are responsible for severe neurological manifestations in children. ('MDH', 'Gene', '4191', (32, 35)) ('MDH', 'Gene', (32, 35)) ('responsible', 'Reg', (130, 141)) ('mutations', 'Var', (19, 28)) ('Krebs', 'Chemical', '-', (65, 70)) ('children', 'Species', '9606', (184, 192)) ('MDH', 'Gene', '4191', (120, 123)) ('malate', 'Chemical', 'MESH:C030298', (98, 104)) ('MDH', 'Gene', (120, 123)) 42817 27989324 We report bi-allelic MDH2 variants in three unrelated subjects presenting with an early-onset mitochondrial phenotype comprising generalized hypotonia, psychomotor delay, and refractory epilepsy. ('hypotonia', 'Phenotype', 'HP:0001290', (141, 150)) ('with', 'Reg', (74, 78)) ('MDH2', 'Gene', (21, 25)) ('psychomotor delay', 'Phenotype', 'HP:0001263', (152, 169)) ('generalized hypotonia', 'Disease', (129, 150)) ('epilepsy', 'Phenotype', 'HP:0001250', (186, 194)) ('generalized hypotonia', 'Phenotype', 'HP:0001290', (129, 150)) ('generalized hypotonia', 'Disease', 'MESH:D009123', (129, 150)) ('refractory epilepsy', 'Disease', 'MESH:D000069279', (175, 194)) ('psychomotor delay', 'Disease', (152, 169)) ('MDH2 variant', 'CellLine', 'CVCL:7204', (21, 33)) ('refractory epilepsy', 'Disease', (175, 194)) ('psychomotor delay', 'Disease', 'MESH:D011596', (152, 169)) ('variants', 'Var', (26, 34)) 42827 27989324 WES via previously described methodologies and bioinformatic filtering pipelines identified compound-heterozygous missense variants in MDH2 (GenBank: NM_005918.3): c.398C>T (p.Pro133Leu) and c.620C>T (p.Pro207Leu). ('p.Pro133Leu', 'Mutation', 'rs375002796', (174, 185)) ('c.620C>T', 'Var', (191, 199)) ('p.Pro207Leu', 'Mutation', 'rs1057519566', (201, 212)) ('c.620C>T', 'Mutation', 'rs1057519566', (191, 199)) ('c.398C>T', 'Var', (164, 172)) ('MDH2', 'Gene', (135, 139)) ('c.398C>T', 'Mutation', 'rs375002796', (164, 172)) 42828 27989324 Familial segregation studies showed that the c.398C>T variant was inherited from the father (F1:I.1) and the c.620C>T variant was inherited from the mother (F1:I.2), whereas a healthy sister (F1:II.1) was a heterozygous carrier of the paternal (c.398C>T) variant only (Figure 1A). ('c.620C>T', 'Var', (109, 117)) ('c.398C>T', 'Mutation', 'rs375002796', (245, 253)) ('c.620C>T', 'Mutation', 'rs1057519566', (109, 117)) ('c.398C>T', 'Var', (45, 53)) ('c.398C>T', 'Mutation', 'rs375002796', (45, 53)) 42840 27989324 WES identified two heterozygous MDH2 variants: a paternally inherited c.398C>T (p.Pro133Leu) missense variant, which was also found in S1, and a maternally inherited c.596delG (p.Gly199Alafs*10) nonsense variant (Figure 1A). ('p.Gly199Alafs*10', 'Var', (177, 193)) ('c.398C>T', 'Mutation', 'rs375002796', (70, 78)) ('MDH2 variant', 'CellLine', 'CVCL:7204', (32, 44)) ('p.Pro133Leu', 'Mutation', 'rs375002796', (80, 91)) ('c.398C>T', 'Var', (70, 78)) ('MDH2', 'Gene', (32, 36)) ('p.Gly199Alafs*10', 'FRAMESHIFT', 'None', (177, 193)) ('c.596delG', 'Mutation', 'rs1057519567', (166, 175)) 42841 27989324 GenePROF ranked MDH2 as the most likely disease-causing gene for an unrelated affected subject (S3, F3:II.1) who also carries a maternally inherited c.398C>T (p.Pro133Leu) MDH2 variant (Figure 1A). ('MDH2 variant', 'CellLine', 'CVCL:7204', (172, 184)) ('c.398C>T', 'Mutation', 'rs375002796', (149, 157)) ('MDH2', 'Gene', (172, 176)) ('p.Pro133Leu', 'Mutation', 'rs375002796', (159, 170)) ('c.398C>T', 'Var', (149, 157)) 42847 27989324 The c.620C>T variant detected in S1 was absent from public databases, whereas the c.109G>A variant detected in S3 was found two times, and the c.398C>T variant, present in all subjects, was listed seven times only in a heterozygous state in ~120,000 alleles from the Exome Aggregation Consortium (ExAC) Browser. ('c.398C>T', 'Var', (143, 151)) ('c.109G>A', 'Mutation', 'rs782308462', (82, 90)) ('c.109G>A', 'Var', (82, 90)) ('c.398C>T', 'Mutation', 'rs375002796', (143, 151)) ('c.620C>T', 'Var', (4, 12)) ('c.620C>T', 'Mutation', 'rs1057519566', (4, 12)) 42848 27989324 The dimeric protein was co-crystallized with malate ion and nicotinamide-adenine-dinucleotide (NAD) for visualization of the structure and analysis of the structural consequences of MDH2 variants (Figure 1C). ('nicotinamide-adenine-dinucleotide', 'Chemical', 'MESH:D009243', (60, 93)) ('MDH2 variant', 'CellLine', 'CVCL:7204', (182, 194)) ('MDH2', 'Gene', (182, 186)) ('variants', 'Var', (187, 195)) ('NAD', 'Chemical', 'MESH:D009243', (95, 98)) ('malate', 'Chemical', 'MESH:C030298', (45, 51)) 42849 27989324 Gly37 is located in the NAD binding pocket; the mutation from this residue to arginine is likely to alter the binding of the coenzyme as a result of steric hindrance. ('arginine', 'Chemical', 'MESH:D001120', (78, 86)) ('NAD', 'Chemical', 'MESH:D009243', (24, 27)) ('Gly37', 'Var', (0, 5)) ('binding', 'Interaction', (110, 117)) ('mutation', 'Var', (48, 56)) ('alter', 'Reg', (100, 105)) ('Gly37', 'Chemical', '-', (0, 5)) 42855 27989324 Thus, Pro133 and Pro207 are predicted to have structural roles by contributing to the overall architecture of MDH2. ('architecture', 'MPA', (94, 106)) ('Pro207', 'Chemical', '-', (17, 23)) ('Pro133', 'Var', (6, 12)) ('contributing', 'Reg', (66, 78)) ('MDH2', 'Gene', (110, 114)) ('Pro207', 'Var', (17, 23)) ('Pro133', 'Chemical', '-', (6, 12)) 42856 27989324 Consequently, the p.Pro133Leu and p.Pro207Leu variants might result in destabilization of protein regions necessary for functional protein folding. ('result', 'Reg', (61, 67)) ('protein', 'Protein', (90, 97)) ('destabilization', 'MPA', (71, 86)) ('p.Pro207Leu', 'Var', (34, 45)) ('p.Pro133Leu', 'Var', (18, 29)) ('p.Pro207Leu', 'Mutation', 'rs1057519566', (34, 45)) ('p.Pro133Leu', 'Mutation', 'rs375002796', (18, 29)) 42857 27989324 We used primary fibroblast cultures established from S1 and S3 to confirm the role of MDH2 variants in disease. ('MDH2 variant', 'CellLine', 'CVCL:7204', (86, 98)) ('MDH2', 'Gene', (86, 90)) ('variants', 'Var', (91, 99)) 42858 27989324 Western blotting showed that MDH2 levels were not detectable in either S1 or S3 fibroblasts, supporting the notion that corresponding MDH2 variants adversely affect the stability of the protein (Figure 2A). ('MDH2', 'Gene', (134, 138)) ('MDH2 variant', 'CellLine', 'CVCL:7204', (134, 146)) ('affect', 'Reg', (158, 164)) ('stability', 'MPA', (169, 178)) ('variants', 'Var', (139, 147)) 42860 27989324 The activity was notably lower in cells obtained from the parents of S1 (F1: I.1 and I.2, heterozygous for the c.398C>T and c.620C>T variants, respectively) than in control fibroblasts. ('c.398C>T', 'Mutation', 'rs375002796', (111, 119)) ('c.620C>T', 'Mutation', 'rs1057519566', (124, 132)) ('lower', 'NegReg', (25, 30)) ('c.398C>T', 'Var', (111, 119)) ('activity', 'MPA', (4, 12)) ('c.620C>T', 'Var', (124, 132)) 42864 27989324 To definitively substantiate that the disease-segregating missense MDH2 variants indeed cause MDH2 deficiency, we used the yeast Saccharomyces cerevisiae as a proven system for modeling mitochondrial-disease-causing mutations. ('missense', 'Var', (58, 66)) ('mitochondrial-disease', 'Disease', 'MESH:D028361', (186, 207)) ('MDH2 deficiency', 'Disease', (94, 109)) ('mitochondrial-disease', 'Disease', (186, 207)) ('variants', 'Var', (72, 80)) ('yeast', 'Species', '4932', (123, 128)) ('Saccharomyces cerevisiae', 'Species', '4932', (129, 153)) ('MDH2 variant', 'CellLine', 'CVCL:7204', (67, 79)) ('MDH2 deficiency', 'Disease', 'MESH:D007153', (94, 109)) ('cause', 'Reg', (88, 93)) ('MDH2', 'Gene', (67, 71)) 42867 27989324 The human Gly37, Pro133, and Pro207 residues (corresponding to Gly30, Pro128, and Pro202, respectively, in yeast MDH1) are all conserved between the two species (Figure 1B). ('human', 'Species', '9606', (4, 9)) ('MDH1', 'Gene', '853777', (113, 117)) ('MDH1', 'Gene', (113, 117)) ('Pro202', 'Var', (82, 88)) ('Pro207', 'Chemical', '-', (29, 35)) ('Pro133', 'Chemical', '-', (17, 23)) ('Pro128', 'Chemical', '-', (70, 76)) ('Pro202', 'Chemical', '-', (82, 88)) ('yeast', 'Species', '4932', (107, 112)) ('Pro128', 'Var', (70, 76)) ('Gly37', 'Chemical', '-', (10, 15)) ('Gly30', 'Var', (63, 68)) ('Pro207', 'Var', (29, 35)) ('Gly30', 'Chemical', '-', (63, 68)) 42884 27989324 Enzyme deficiencies in the Krebs cycle have been rarely reported as the cause of metabolic disease presentations on the assumption that loss-of-function mutations affecting these key enzymes appear to be typically incompatible with life. ('metabolic disease', 'Disease', (81, 98)) ('mutations', 'Var', (153, 162)) ('metabolic disease', 'Disease', 'MESH:D008659', (81, 98)) ('Krebs', 'Chemical', '-', (27, 32)) ('Enzyme deficiencies', 'Disease', 'MESH:D008661', (0, 19)) ('Enzyme deficiencies', 'Disease', (0, 19)) 42885 27989324 To date, only recessively inherited variants in SDH (succinate dehydrogenase), FH (fumarate hydratase [MIM: 136850]), and ACO2 (aconitase 2 [MIM: 100850]) have been associated with human disease. ('human', 'Species', '9606', (181, 186)) ('SDH', 'Gene', '6390', (48, 51)) ('aconitase 2', 'Gene', (128, 139)) ('associated', 'Reg', (165, 175)) ('FH', 'Gene', '2271', (79, 81)) ('fumarate hydratase', 'Gene', '2271', (83, 101)) ('fumarate hydratase', 'Gene', (83, 101)) ('SDH', 'Gene', (48, 51)) ('ACO2', 'Gene', (122, 126)) ('variants', 'Var', (36, 44)) ('succinate dehydrogenase', 'Gene', '6390', (53, 76)) ('ACO2', 'Gene', '50', (122, 126)) ('aconitase 2', 'Gene', '50', (128, 139)) ('succinate dehydrogenase', 'Gene', (53, 76)) 42887 27989324 Recessively inherited SDHA variants are mainly associated with Leigh syndrome (MIM: 256000), and mutations in SDHB (MIM: 185470), SDHD (MIM: 602690), and SDHAF1 (MIM: 612848) are involved in severe infantile neurological presentations or cardiomyopathy associated with significant complex II deficiency. ('mutations', 'Var', (97, 106)) ('SDHA', 'Gene', (154, 158)) ('variants', 'Var', (27, 35)) ('Leigh syndrome', 'Disease', (63, 77)) ('SDHD', 'Gene', (130, 134)) ('SDHA', 'Gene', '6389', (154, 158)) ('associated', 'Reg', (47, 57)) ('SDHB', 'Gene', (110, 114)) ('cardiomyopathy', 'Disease', (238, 252)) ('complex II deficiency', 'Disease', 'MESH:C565375', (281, 302)) ('SDHAF1', 'Gene', '644096', (154, 160)) ('SDHA', 'Gene', (22, 26)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (238, 252)) ('involved', 'Reg', (179, 187)) ('complex II deficiency', 'Disease', (281, 302)) ('SDHA', 'Gene', '6389', (22, 26)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (238, 252)) ('SDHAF1', 'Gene', (154, 160)) ('SDHD', 'Gene', '6392', (130, 134)) ('SDHB', 'Gene', '6390', (110, 114)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (63, 77)) 42888 27989324 Fumarase deficiency, associated with recessively inherited FH variants, is a metabolic disorder characterized by neurological impairment in early childhood accompanied by encephalopathy and seizures, often leading to death in the first years of life (for a review, see Ottolenghi et al.). ('neurological impairment', 'Phenotype', 'HP:0000707', (113, 136)) ('Fumarase deficiency', 'Disease', (0, 19)) ('neurological impairment', 'Disease', (113, 136)) ('encephalopathy', 'Disease', 'MESH:D001927', (171, 185)) ('neurological impairment', 'Disease', 'MESH:D009422', (113, 136)) ('death', 'Disease', 'MESH:D003643', (217, 222)) ('encephalopathy', 'Phenotype', 'HP:0001298', (171, 185)) ('leading to', 'Reg', (206, 216)) ('metabolic disorder', 'Disease', 'MESH:D008659', (77, 95)) ('seizures', 'Disease', (190, 198)) ('FH', 'Gene', '2271', (59, 61)) ('metabolic disorder', 'Disease', (77, 95)) ('Fumarase deficiency', 'Phenotype', 'HP:0003536', (0, 19)) ('seizures', 'Disease', 'MESH:D012640', (190, 198)) ('encephalopathy', 'Disease', (171, 185)) ('metabolic disorder', 'Phenotype', 'HP:0001939', (77, 95)) ('child', 'Species', '9606', (146, 151)) ('seizures', 'Phenotype', 'HP:0001250', (190, 198)) ('Fumarase deficiency', 'Disease', 'MESH:C538191', (0, 19)) ('variants', 'Var', (62, 70)) ('death', 'Disease', (217, 222)) 42889 27989324 Finally, mutations in ACO2, encoding mitochondrial aconitase, are responsible for cerebellar-retinal degeneration in childhood. ('cerebellar-retinal degeneration', 'Disease', 'MESH:D012162', (82, 113)) ('mitochondrial aconitase', 'Gene', (37, 60)) ('mitochondrial aconitase', 'Gene', '50', (37, 60)) ('mutations', 'Var', (9, 18)) ('cerebellar-retinal degeneration', 'Disease', (82, 113)) ('ACO2', 'Gene', (22, 26)) ('responsible', 'Reg', (66, 77)) ('retinal degeneration', 'Phenotype', 'HP:0000546', (93, 113)) ('ACO2', 'Gene', '50', (22, 26)) ('child', 'Species', '9606', (117, 122)) 42890 27989324 Our report documents that loss-of-function mutations in MDH2 are compatible with life and are associated with early-onset severe neurological disease, and the deleterious nature of the identified MDH2 variants has been confirmed by functional assessment in both human cells and a yeast model. ('MDH2', 'Gene', (196, 200)) ('yeast', 'Species', '4932', (280, 285)) ('human', 'Species', '9606', (262, 267)) ('neurological disease', 'Disease', 'MESH:D020271', (129, 149)) ('neurological disease', 'Disease', (129, 149)) ('variants', 'Var', (201, 209)) ('mutations', 'Var', (43, 52)) ('MDH2', 'Gene', (56, 60)) ('MDH2 variant', 'CellLine', 'CVCL:7204', (196, 208)) ('loss-of-function', 'NegReg', (26, 42)) ('neurological disease', 'Phenotype', 'HP:0000707', (129, 149)) 42902 27989324 However, targeted knockdown of MDH2 expression in HeLa cells by small hairpin RNA did lead to the accumulation of both malate and fumarate. ('knockdown', 'Var', (18, 27)) ('HeLa', 'CellLine', 'CVCL:0030', (50, 54)) ('fumarate', 'Chemical', 'MESH:D005650', (130, 138)) ('accumulation of', 'MPA', (98, 113)) ('fumarate', 'MPA', (130, 138)) ('malate', 'Chemical', 'MESH:C030298', (119, 125)) ('MDH2', 'Gene', (31, 35)) ('lead to', 'Reg', (86, 93)) 42905 27989324 Impairment of the PDH complex leads to a decrease in the production of NADH and FADH2, which donate electrons to the RC to complete the OXPHOS by generating ATP. ('production', 'MPA', (57, 67)) ('NADH', 'Gene', (71, 75)) ('ATP', 'Chemical', 'MESH:D000255', (157, 160)) ('decrease', 'NegReg', (41, 49)) ('ATP', 'MPA', (157, 160)) ('Impairment', 'Var', (0, 10)) ('NADH', 'Chemical', 'MESH:D009243', (71, 75)) ('FADH2', 'Gene', (80, 85)) 42908 27989324 Although the recessive MDH2 variants identified in the affected subjects described in this study lead to a severe neurological presentation, the fact that their parents are heterozygous carriers could place them at an elevated risk of tumorigenesis. ('MDH2', 'Gene', (23, 27)) ('tumor', 'Disease', 'MESH:D009369', (235, 240)) ('variants', 'Var', (28, 36)) ('tumor', 'Phenotype', 'HP:0002664', (235, 240)) ('MDH2 variant', 'CellLine', 'CVCL:7204', (23, 35)) ('tumor', 'Disease', (235, 240)) ('lead to', 'Reg', (97, 104)) 42910 27989324 For heterozygous carriers of mutations in the different SDH genes associated with infantile neurological presentations, the situation is unclear. ('infantile neurological presentations', 'Disease', (82, 118)) ('mutations', 'Var', (29, 38)) ('associated', 'Reg', (66, 76)) ('SDH', 'Gene', '6390', (56, 59)) ('SDH', 'Gene', (56, 59)) 42911 27989324 Although there is no indication of cancer susceptibility in either family with MDH2 mutations, we are recommending ongoing surveillance and screening. ('cancer', 'Phenotype', 'HP:0002664', (35, 41)) ('MDH2', 'Gene', (79, 83)) ('mutations', 'Var', (84, 93)) ('cancer', 'Disease', 'MESH:D009369', (35, 41)) ('cancer', 'Disease', (35, 41)) 42912 27989324 In conclusion, we have shown that bi-allelic variants in MDH2, encoding a mitochondrially targeted Krebs cycle enzyme, are responsible for a severe infantile neurological phenotype. ('bi-allelic variants', 'Var', (34, 53)) ('MDH2', 'Gene', (57, 61)) ('Krebs', 'Chemical', '-', (99, 104)) ('responsible for', 'Reg', (123, 138)) 42914 27989324 The data reported in this paper have been deposited in ClinVar (as three independent submissions corresponding to each subject or organization) under accession numbers ClinVar: SCV000321300 and SCV000321301for c.398C>T and c.620C>T, respectively; SCV000322707 and SCV000322708 for c.398C>T and c.596delG, respectively; and SCV000299301 for c.109G>A and c.398C>T. ('SCV000299301', 'Var', (323, 335)) ('SCV000321301for', 'Var', (194, 209)) ('c.398C>T', 'Var', (353, 361)) ('SCV000322708', 'Var', (264, 276)) ('c.596delG', 'Mutation', 'rs1057519567', (294, 303)) ('c.398C>T', 'Mutation', 'rs375002796', (353, 361)) ('SCV000322707', 'Var', (247, 259)) ('c.398C>T', 'Mutation', 'rs375002796', (281, 289)) ('c.398C>T', 'Var', (210, 218)) ('c.109G>A', 'Var', (340, 348)) ('c.109G>A', 'Mutation', 'rs782308462', (340, 348)) ('SCV000321300', 'Var', (177, 189)) ('c.398C>T', 'Mutation', 'rs375002796', (210, 218)) ('c.620C>T', 'Var', (223, 231)) ('c.620C>T', 'Mutation', 'rs1057519566', (223, 231)) 42988 21692797 These tumors typically occur in a benign form but may present in a malignant form and reach up to 36 % or even higher in subjects with extra-adrenal tumors, in particular when associated with the mutation of the gene encoding the B subunit of the mitochondrial complex II enzyme succinate dehydrogenase enzyme (SDHB). ('mutation', 'Var', (196, 204)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('extra-adrenal tumors', 'Disease', 'MESH:D010236', (135, 155)) ('tumor', 'Phenotype', 'HP:0002664', (149, 154)) ('extra-adrenal tumors', 'Disease', (135, 155)) ('associated', 'Reg', (176, 186)) ('tumors', 'Disease', (6, 12)) ('tumors', 'Disease', 'MESH:D009369', (6, 12)) ('tumors', 'Disease', (149, 155)) ('SDHB', 'Gene', '6390', (311, 315)) ('SDHB', 'Gene', (311, 315)) ('tumors', 'Disease', 'MESH:D009369', (149, 155)) ('tumors', 'Phenotype', 'HP:0002664', (149, 155)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (141, 154)) 42991 21692797 From several clinical studies, the highest predictive value might include the extra-adrenal tumor location, presence of SDHB mutations, and tumor size. ('mutations', 'Var', (125, 134)) ('extra-adrenal tumor', 'Disease', (78, 97)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (84, 97)) ('tumor', 'Disease', 'MESH:D009369', (92, 97)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('tumor', 'Disease', (92, 97)) ('SDHB', 'Gene', '6390', (120, 124)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('tumor', 'Disease', 'MESH:D009369', (140, 145)) ('SDHB', 'Gene', (120, 124)) ('extra-adrenal tumor', 'Disease', 'MESH:D010236', (78, 97)) ('tumor', 'Disease', (140, 145)) 43008 21692797 Genetic testing for mutations in pheochromocytoma susceptible genes [RET (rearranged during transfection), VHL (von Hippel-Lindau gene), SDHB, and SDHD (succinate dehydrogenase subunit D gene) was performed at NIH, at Mayo Medical Laboratories, Rochester, MN or at Division of Molecular Diagnostics at the University of Pittsburgh Medical Center Department of Genetics of the Children's Hospital of Philadelphia, PA as described elsewhere or at Institute of Biology and Medical Genetics of the First Faculty of Medicine, Charles University in Prague. ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (112, 129)) ('VHL', 'Gene', '7428', (107, 110)) ('RET', 'Gene', '5979', (69, 72)) ('pheochromocytoma', 'Disease', (33, 49)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (33, 49)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (33, 49)) ('SDHB', 'Gene', '6390', (137, 141)) ('Children', 'Species', '9606', (376, 384)) ('SDHB', 'Gene', (137, 141)) ('SDHD', 'Gene', '6392', (147, 151)) ('Mayo', 'Species', '162683', (218, 222)) ('RET', 'Gene', (69, 72)) ('von Hippel-Lindau', 'Disease', (112, 129)) ('MN', 'CellLine', 'CVCL:U508', (256, 258)) ('SDHD', 'Gene', (147, 151)) ('VHL', 'Gene', (107, 110)) ('mutations', 'Var', (20, 29)) 43019 21692797 Genetic testing for germ-line mutations or clinical assessment revealed 9 (25.7 %) carriers of germ-line mutations in patients with malignant pheochromocytoma (2x SDHB, 4x RET, and 3x VHL), compared to 11 (14.7 %) carriers in subjects with benign pheochromocytoma (2x RET, 5x VHL, and 4x neurofibromatosis type I) (Table 1). ('pheochromocytoma', 'Phenotype', 'HP:0002666', (142, 158)) ('VHL', 'Gene', (276, 279)) ('VHL', 'Gene', '7428', (184, 187)) ('mutations', 'Var', (105, 114)) ('benign pheochromocytoma', 'Disease', (240, 263)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (132, 158)) ('VHL', 'Gene', '7428', (276, 279)) ('RET', 'Gene', '5979', (172, 175)) ('malignant pheochromocytoma', 'Disease', (132, 158)) ('benign pheochromocytoma', 'Disease', 'MESH:D010673', (240, 263)) ('SDHB', 'Gene', '6390', (163, 167)) ('RET', 'Gene', '5979', (268, 271)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (288, 305)) ('neurofibromatosis type I', 'Disease', (288, 312)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (247, 263)) ('VHL', 'Gene', (184, 187)) ('SDHB', 'Gene', (163, 167)) ('neurofibromatosis type I', 'Disease', 'MESH:C537392', (288, 312)) ('RET', 'Gene', (172, 175)) ('RET', 'Gene', (268, 271)) ('patients', 'Species', '9606', (118, 126)) 43054 21692797 The strongest predictors are extra-adrenal locations and the presence of mutation of the SDHB gene. ('presence of mutation', 'Var', (61, 81)) ('mutation', 'Var', (73, 81)) ('SDHB', 'Gene', '6390', (89, 93)) ('SDHB', 'Gene', (89, 93)) 43069 21692797 This could be explained by the relatively low number of subjects who have been tested positive for mutations in the SDHB-gene which has been found to be strongly associated not only with malignant disease but also with either dopamine secreting tumors or no catecholamine production at all. ('tumors', 'Phenotype', 'HP:0002664', (245, 251)) ('malignant disease', 'Disease', (187, 204)) ('dopamine', 'Chemical', 'MESH:D004298', (226, 234)) ('catecholamine', 'Chemical', 'MESH:D002395', (258, 271)) ('SDHB', 'Gene', '6390', (116, 120)) ('tumors', 'Disease', 'MESH:D009369', (245, 251)) ('associated', 'Reg', (162, 172)) ('tumor', 'Phenotype', 'HP:0002664', (245, 250)) ('mutations', 'Var', (99, 108)) ('SDHB', 'Gene', (116, 120)) ('malignant disease', 'Disease', 'MESH:D009369', (187, 204)) ('tumors', 'Disease', (245, 251)) 43071 21692797 However, only two patients with mutation of the SDHB-gene, which is strongly associated with a malignant behavior of extra-adrenal pheochromocytoma, were included in the present study. ('SDHB', 'Gene', (48, 52)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (123, 147)) ('extra-adrenal pheochromocytoma', 'Disease', (117, 147)) ('SDHB', 'Gene', '6390', (48, 52)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (131, 147)) ('extra-adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (117, 147)) ('patients', 'Species', '9606', (18, 26)) ('extra-adrenal pheochromocytoma', 'Phenotype', 'HP:0006737', (117, 147)) ('mutation', 'Var', (32, 40)) ('associated with', 'Reg', (77, 92)) 43104 17683569 Additionally, positive staining for [Leu5]-enkephalin, [Met5]-enkephalin, somatostatin, pancreatic polypeptide, and vasoactive intestinal polypeptide (VIP) was identified. ('VIP', 'Gene', '7432', (151, 154)) ('somatostatin', 'Gene', '6750', (74, 86)) ('VIP', 'Gene', (151, 154)) ('vasoactive intestinal polypeptide', 'Gene', (116, 149)) ('[Leu5]-enkephalin', 'Var', (36, 53)) ('pancreatic polypeptide', 'Gene', '5539', (88, 110)) ('somatostatin', 'Gene', (74, 86)) ('pancreatic polypeptide', 'Gene', (88, 110)) ('vasoactive intestinal polypeptide', 'Gene', '7432', (116, 149)) ('[Met5]-enkephalin', 'Var', (55, 72)) 43108 17683569 Due to histopathologic diagnosis, genetic testing for familial paraganglioma, neurofibromatosis type 1, von Hippel-Lindau disease, the Carney triad, multiple endocrine neoplasia type 2, and mutations of the succinate dehydrogenase genes (SDHB, SDHC, and SDHD) was performed that was negative. ('multiple endocrine neoplasia type 2', 'Disease', (149, 184)) ('SDHB', 'Gene', '6390', (238, 242)) ('SDHC', 'Gene', (244, 248)) ('neoplasia', 'Phenotype', 'HP:0002664', (168, 177)) ('paraganglioma', 'Phenotype', 'HP:0002668', (63, 76)) ('mutations', 'Var', (190, 199)) ('neurofibromatosis type 1, von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (78, 129)) ('SDHB', 'Gene', (238, 242)) ('familial paraganglioma', 'Disease', (54, 76)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (149, 184)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (78, 95)) ('Carney triad', 'Disease', (135, 147)) ('SDHD', 'Gene', '6392', (254, 258)) ('SDHC', 'Gene', '6391', (244, 248)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (158, 177)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (54, 76)) ('SDHD', 'Gene', (254, 258)) 43120 17683569 Paragangliomas may be hereditary and can be associated with familial paraganglioma, neurofibromatosis type 1, von Hippel-Lindau disease, the Carney triad, multiple endocrine neoplasia type 2, and mutations of the succinate dehydrogenase genes (SDHB, SDHC, and SDHD). ('SDHC', 'Gene', '6391', (250, 254)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (0, 14)) ('SDHB', 'Gene', '6390', (244, 248)) ('multiple endocrine neoplasia type 2', 'Disease', (155, 190)) ('paraganglioma', 'Phenotype', 'HP:0002668', (69, 82)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (84, 101)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (60, 82)) ('SDHB', 'Gene', (244, 248)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('SDHC', 'Gene', (250, 254)) ('SDHD', 'Gene', '6392', (260, 264)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (155, 190)) ('Paragangliomas', 'Disease', (0, 14)) ('mutations', 'Var', (196, 205)) ('associated', 'Reg', (44, 54)) ('neoplasia', 'Phenotype', 'HP:0002664', (174, 183)) ('neurofibromatosis type 1, von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (84, 135)) ('familial paraganglioma', 'Disease', (60, 82)) ('Carney triad', 'Disease', (141, 153)) ('SDHD', 'Gene', (260, 264)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (164, 183)) 43152 32608378 Advanced pharmacological therapies for neurofibromatosis type 1-related tumors Neurofibromatosis Type 1 (NF1) is an autosomal dominant tumor-predisposition disorder that is caused by a heterozygous loss of function variant in the NF1 gene, which encodes a protein called neurofibromin. ('loss of function', 'NegReg', (198, 214)) ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('Neurofibromatosis Type 1', 'Gene', '4763', (79, 103)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('variant', 'Var', (215, 222)) ('Neurofibromatosis Type 1', 'Gene', (79, 103)) ('tumors', 'Phenotype', 'HP:0002664', (72, 78)) ('neurofibromatosis type 1-related tumors', 'Disease', (39, 78)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (39, 56)) ('tumor-predisposition disorder', 'Disease', (135, 164)) ('NF1', 'Gene', (230, 233)) ('tumor-predisposition disorder', 'Disease', 'OMIM:614327', (135, 164)) ('neurofibroma', 'Phenotype', 'HP:0001067', (39, 51)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (79, 96)) ('neurofibromatosis type 1-related tumors', 'Disease', 'MESH:C537392', (39, 78)) 43153 32608378 The absence of neurofibromin causes increased activity in the Rat sarcoma protein (RAS) signalling pathway, which results in an increased growth and cell proliferation. ('sarcoma', 'Disease', (66, 73)) ('sarcoma', 'Phenotype', 'HP:0100242', (66, 73)) ('increased', 'PosReg', (128, 137)) ('activity', 'MPA', (46, 54)) ('increased', 'PosReg', (36, 45)) ('neurofibromin', 'Protein', (15, 28)) ('sarcoma', 'Disease', 'MESH:D012509', (66, 73)) ('absence', 'Var', (4, 11)) 43159 32608378 Neurofibromatosis Type 1 (NF1) is an autosomal dominant tumor-predisposition disorder that is caused by a heterozygous loss of function variant in the tumor suppressor gene NF1. ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('NF1', 'Gene', (173, 176)) ('tumor', 'Phenotype', 'HP:0002664', (151, 156)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (0, 17)) ('tumor', 'Disease', (56, 61)) ('Neurofibromatosis Type 1', 'Gene', (0, 24)) ('tumor', 'Disease', (151, 156)) ('variant', 'Var', (136, 143)) ('tumor-predisposition disorder', 'Disease', (56, 85)) ('tumor-predisposition disorder', 'Disease', 'OMIM:614327', (56, 85)) ('Neurofibromatosis Type 1', 'Gene', '4763', (0, 24)) ('tumor', 'Disease', 'MESH:D009369', (56, 61)) ('tumor', 'Disease', 'MESH:D009369', (151, 156)) 43162 32608378 Risk of cancer in NF1 patients is 2 to 5 times higher than in the general population (6,7). ('cancer', 'Disease', (8, 14)) ('higher', 'PosReg', (47, 53)) ('patients', 'Species', '9606', (22, 30)) ('cancer', 'Phenotype', 'HP:0002664', (8, 14)) ('NF1', 'Var', (18, 21)) ('cancer', 'Disease', 'MESH:D009369', (8, 14)) 43170 32608378 The germline mutation rate of NF1 is some 10-fold higher than that observed for most other inherited disease genes. ('higher', 'PosReg', (50, 56)) ('NF1', 'Gene', (30, 33)) ('inherited disease', 'Disease', 'MESH:D030342', (91, 108)) ('germline mutation', 'Var', (4, 21)) ('inherited disease', 'Disease', (91, 108)) 43171 32608378 Currently, over 2600 different inherited mutations in NF1 have been reported in the Human Gene Mutation Database (HGMD ) as a cause of NF1 (11-16). ('mutations', 'Var', (41, 50)) ('cause', 'Reg', (126, 131)) ('NF1', 'Gene', (54, 57)) ('Human', 'Species', '9606', (84, 89)) ('NF1', 'Disease', (135, 138)) 43178 32608378 Other clinical features require an additional somatic mutation, resulting in biallelic NF1 inactivation, as seen in the development of cafe-au-lait macules (CALMs), neurofibromas, GIST, glomus tumors, juvenile myelomonocytic leukemia (JMML), bone dysplasia and pheochromocytoma (25). ('juvenile myelomonocytic leukemia', 'Disease', (201, 233)) ('glomus tumors', 'Disease', 'MESH:D005918', (186, 199)) ('neurofibromas', 'Phenotype', 'HP:0001067', (165, 178)) ('juvenile myelomonocytic leukemia', 'Phenotype', 'HP:0012209', (201, 233)) ('bone dysplasia', 'Phenotype', 'HP:0002652', (242, 256)) ('neurofibromas', 'Disease', 'MESH:D009455', (165, 178)) ('GIST', 'Phenotype', 'HP:0100723', (180, 184)) ('NF1', 'Gene', (87, 90)) ('JMML', 'Phenotype', 'HP:0012209', (235, 239)) ('bone dysplasia', 'Disease', 'MESH:D001848', (242, 256)) ('CALMs', 'Phenotype', 'HP:0000957', (157, 162)) ('neurofibroma', 'Phenotype', 'HP:0001067', (165, 177)) ('glomus tumors', 'Disease', (186, 199)) ('biallelic', 'Var', (77, 86)) ('neurofibromas', 'Disease', (165, 178)) ('juvenile myelomonocytic leukemia', 'Disease', 'MESH:D054429', (201, 233)) ('tumors', 'Phenotype', 'HP:0002664', (193, 199)) ('leukemia', 'Phenotype', 'HP:0001909', (225, 233)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (261, 277)) ('cafe-au-lait macules', 'Phenotype', 'HP:0000957', (135, 155)) ('tumor', 'Phenotype', 'HP:0002664', (193, 198)) ('bone dysplasia', 'Disease', (242, 256)) ('pheochromocytoma', 'Disease', (261, 277)) ('inactivation', 'NegReg', (91, 103)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (261, 277)) ('macules', 'Phenotype', 'HP:0012733', (148, 155)) 43179 32608378 Furthermore, mouse models of MPNST have shown that biallelic inactivation of the NF1 gene may not be sufficient for tumour formation and that additional genetic alterations such as mutation of TP53, CDKN2A or SUZ12, are required for the progression of MPNST (7,29,30). ('tumour', 'Disease', 'MESH:D009369', (116, 122)) ('SUZ12', 'Gene', '52615', (209, 214)) ('mouse', 'Species', '10090', (13, 18)) ('MPNST', 'Phenotype', 'HP:0100697', (29, 34)) ('SUZ12', 'Gene', (209, 214)) ('biallelic inactivation', 'Var', (51, 73)) ('NF1', 'Gene', (81, 84)) ('TP53', 'Gene', '22059', (193, 197)) ('tumour', 'Disease', (116, 122)) ('MPNST', 'Phenotype', 'HP:0100697', (252, 257)) ('CDKN2A', 'Gene', '12578', (199, 205)) ('mutation', 'Var', (181, 189)) ('TP53', 'Gene', (193, 197)) ('CDKN2A', 'Gene', (199, 205)) ('tumour', 'Phenotype', 'HP:0002664', (116, 122)) 43187 32608378 Cognitive dysfunction has a high impact on NF1 children, since school-age children with NF1 have higher rates of developmental delay and cognitive impairment than their pairs, and many of them carry a concurrent diagnosis of attention deficit/hyperactivity disorder. ('cognitive impairment', 'Disease', (137, 157)) ('developmental delay', 'Disease', 'MESH:D002658', (113, 132)) ('attention deficit/hyperactivity disorder', 'Disease', 'MESH:D001289', (225, 265)) ('hyperactivity', 'Phenotype', 'HP:0000752', (243, 256)) ('NF1', 'Var', (88, 91)) ('Cognitive dysfunction', 'Disease', (0, 21)) ('developmental delay', 'Disease', (113, 132)) ('cognitive impairment', 'Disease', 'MESH:D003072', (137, 157)) ('children', 'Species', '9606', (74, 82)) ('children', 'Species', '9606', (47, 55)) ('developmental delay', 'Phenotype', 'HP:0001263', (113, 132)) ('Cognitive dysfunction', 'Disease', 'MESH:D003072', (0, 21)) ('attention deficit/hyperactivity disorder', 'Disease', (225, 265)) ('attention deficit', 'Phenotype', 'HP:0007018', (225, 242)) ('cognitive impairment', 'Phenotype', 'HP:0100543', (137, 157)) 43193 32608378 Patients with NF1 are also at risk to develop other malignancies in adulthood, like gastrointestinal stromal tumors, pheochromocytoma, duodenal carcinoid, high grade glioma and breast cancer. ('pheochromocytoma', 'Disease', 'MESH:D010673', (117, 133)) ('cancer', 'Phenotype', 'HP:0002664', (184, 190)) ('glioma', 'Phenotype', 'HP:0009733', (166, 172)) ('tumors', 'Phenotype', 'HP:0002664', (109, 115)) ('pheochromocytoma', 'Disease', (117, 133)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (117, 133)) ('carcinoid', 'Disease', 'MESH:D002276', (144, 153)) ('Patients', 'Species', '9606', (0, 8)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (84, 115)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (84, 115)) ('malignancies', 'Disease', (52, 64)) ('NF1', 'Var', (14, 17)) ('carcinoid', 'Phenotype', 'HP:0100570', (144, 153)) ('develop', 'PosReg', (38, 45)) ('carcinoid', 'Disease', (144, 153)) ('breast cancer', 'Phenotype', 'HP:0003002', (177, 190)) ('glioma and breast cancer', 'Disease', 'MESH:D001943', (166, 190)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (84, 114)) ('gastrointestinal stromal tumors', 'Disease', (84, 115)) ('malignancies', 'Disease', 'MESH:D009369', (52, 64)) ('duodenal carcinoid', 'Phenotype', 'HP:0006771', (135, 153)) 43201 32608378 Although the 5-year overall survival for patients with low grade glioma is 85%, progression-free survival for those with unresectable/residual disease requiring treatment is significantly lower (40%) (41). ('glioma', 'Disease', (65, 71)) ('lower', 'NegReg', (188, 193)) ('glioma', 'Disease', 'MESH:D005910', (65, 71)) ('glioma', 'Phenotype', 'HP:0009733', (65, 71)) ('patients', 'Species', '9606', (41, 49)) ('low grade', 'Var', (55, 64)) 43231 32608378 Although rare in patients with NF-1, few studies have shown that women with NF1 are at a higher risk of developing early onset breast cancer with aggressive behaviour and a poorer prognosis, compared to the general population. ('aggressive behaviour', 'Phenotype', 'HP:0000718', (146, 166)) ('NF1', 'Var', (76, 79)) ('aggressive behaviour', 'Disease', (146, 166)) ('NF-1', 'Gene', '4763', (31, 35)) ('breast cancer', 'Disease', 'MESH:D001943', (127, 140)) ('breast cancer', 'Disease', (127, 140)) ('breast cancer', 'Phenotype', 'HP:0003002', (127, 140)) ('patients', 'Species', '9606', (17, 25)) ('NF-1', 'Gene', (31, 35)) ('aggressive behaviour', 'Disease', 'MESH:D001523', (146, 166)) ('women', 'Species', '9606', (65, 70)) ('cancer', 'Phenotype', 'HP:0002664', (134, 140)) 43292 32608378 Finally, there are several ongoing trials with selective tyrosine kinase inhibitors like Nilotinib (NCT01275586), Trametinib (NCT03363217) (123), or Cabozantinib (NCT02101736), and mTOR pathway inhibitors like Everolimus (NCT01365468). ('Everolimus', 'Chemical', 'MESH:D000068338', (210, 220)) ('Cabozantinib', 'Chemical', 'MESH:C558660', (149, 161)) ('NCT02101736', 'Var', (163, 174)) ('Trametinib', 'Chemical', 'MESH:C560077', (114, 124)) ('Nilotinib', 'Chemical', 'MESH:C498826', (89, 98)) ('NCT01275586', 'Var', (100, 111)) ('mTOR', 'Gene', '2475', (181, 185)) ('mTOR', 'Gene', (181, 185)) 43295 32608378 These include the use of small molecules, like PLX3397 (an inhibitor of CSF1 and KIT) used in combination with mTor pathway inhibitors (NCT02584647) (125), or modified BET inhibitors to overcome resistance in MPNST (126). ('CSF1', 'Gene', '1435', (72, 76)) ('KIT', 'Gene', '3815', (81, 84)) ('mTor', 'Gene', (111, 115)) ('MPNST', 'Phenotype', 'HP:0100697', (209, 214)) ('KIT', 'Gene', (81, 84)) ('mTor', 'Gene', '2475', (111, 115)) ('BET', 'Gene', '92737', (168, 171)) ('modified', 'Var', (159, 167)) ('CSF1', 'Gene', (72, 76)) ('BET', 'Gene', (168, 171)) 43299 32608378 GTP-RAS activates a multitude of effectors protein, including the RAF and the MEK/ERK signalling cascades, which promote proliferation, and the PI3K/mTOR pathway, which promotes growth and cell survival. ('growth', 'CPA', (178, 184)) ('promotes', 'PosReg', (169, 177)) ('RAF', 'Gene', (66, 69)) ('cell survival', 'CPA', (189, 202)) ('proliferation', 'CPA', (121, 134)) ('promote', 'PosReg', (113, 120)) ('mTOR', 'Gene', '2475', (149, 153)) ('activates', 'PosReg', (8, 17)) ('mTOR', 'Gene', (149, 153)) ('ERK', 'Gene', '5594', (82, 85)) ('GTP-RAS', 'Var', (0, 7)) ('GTP', 'Chemical', '-', (0, 3)) ('ERK', 'Gene', (82, 85)) ('RAF', 'Gene', '22882', (66, 69)) 43300 33182397 Novel DNMT3A Germline Variant in a Patient with Multiple Paragangliomas and Papillary Thyroid Carcinoma The use of next generation technologies has helped to unravel the genetics of rare inherited diseases, facilitating the discovery of new susceptibility genes. ('inherited diseases', 'Disease', 'MESH:D030342', (187, 205)) ('Patient', 'Species', '9606', (35, 42)) ('Paragangliomas and Papillary Thyroid Carcinoma', 'Disease', 'MESH:D000077273', (57, 103)) ('Thyroid Carcinoma', 'Phenotype', 'HP:0002890', (86, 103)) ('Papillary Thyroid Carcinoma', 'Phenotype', 'HP:0002895', (76, 103)) ('Carcinoma', 'Phenotype', 'HP:0030731', (94, 103)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (57, 71)) ('inherited diseases', 'Disease', (187, 205)) ('Variant', 'Var', (22, 29)) ('DNMT3A', 'Gene', (6, 12)) ('DNMT3A', 'Gene', '1788', (6, 12)) 43302 33182397 Here we describe a novel DNMT3A germline variant identified by whole-exome sequencing in a patient with multiple paragangliomas and papillary thyroid carcinoma. ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (142, 159)) ('paragangliomas', 'Phenotype', 'HP:0002668', (113, 127)) ('paraganglioma', 'Phenotype', 'HP:0002668', (113, 126)) ('carcinoma', 'Phenotype', 'HP:0030731', (150, 159)) ('DNMT3A', 'Gene', (25, 31)) ('multiple paragangliomas and papillary thyroid carcinoma', 'Disease', 'MESH:D000077273', (104, 159)) ('papillary thyroid carcinoma', 'Phenotype', 'HP:0002895', (132, 159)) ('variant', 'Var', (41, 48)) ('patient', 'Species', '9606', (91, 98)) 43303 33182397 The increased methylation of DNMT3A target genes observed in the proband's sample points towards a gain-of-function effect of the variant, contrasting with the inactivation caused by loss-of-function alterations commonly seen in other neoplasia and in patients with Tatton-Brown-Rahman syndrome. ('gain-of-function', 'PosReg', (99, 115)) ('Tatton-Brown-Rahman syndrome', 'Disease', (266, 294)) ('neoplasia', 'Disease', (235, 244)) ('methylation', 'MPA', (14, 25)) ('Tatton-Brown-Rahman syndrome', 'Disease', 'OMIM:615879', (266, 294)) ('patients', 'Species', '9606', (252, 260)) ('variant', 'Var', (130, 137)) ('neoplasia', 'Disease', 'MESH:D009369', (235, 244)) ('neoplasia', 'Phenotype', 'HP:0002664', (235, 244)) ('increased', 'PosReg', (4, 13)) 43305 33182397 We recently found germline DNMT3A gain-of-function variants in two patients with head and neck paragangliomas causing a characteristic hypermethylated DNA profile. ('paraganglioma', 'Phenotype', 'HP:0002668', (95, 108)) ('patients', 'Species', '9606', (67, 75)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (81, 109)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (90, 109)) ('variants', 'Var', (51, 59)) ('gain-of-function', 'PosReg', (34, 50)) ('hypermethylated DNA profile', 'MPA', (135, 162)) ('DNMT3A', 'Gene', (27, 33)) ('neck paragangliomas', 'Disease', (90, 109)) ('paragangliomas', 'Phenotype', 'HP:0002668', (95, 109)) 43306 33182397 Here, whole-exome sequencing identifies a novel germline DNMT3A variant (p.Gly332Arg) in a patient with bilateral carotid paragangliomas, papillary thyroid carcinoma and idiopathic intellectual disability. ('papillary thyroid carcinoma', 'Disease', (138, 165)) ('papillary thyroid carcinoma', 'Disease', 'MESH:D000077273', (138, 165)) ('DNMT3A', 'Gene', (57, 63)) ('paragangliomas', 'Phenotype', 'HP:0002668', (122, 136)) ('carcinoma', 'Phenotype', 'HP:0030731', (156, 165)) ('paraganglioma', 'Phenotype', 'HP:0002668', (122, 135)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (148, 165)) ('bilateral carotid paragangliomas', 'Disease', (104, 136)) ('papillary thyroid carcinoma', 'Phenotype', 'HP:0002895', (138, 165)) ('carotid paragangliomas', 'Phenotype', 'HP:0100635', (114, 136)) ('patient', 'Species', '9606', (91, 98)) ('p.Gly332Arg', 'Var', (73, 84)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (73, 84)) ('bilateral carotid paragangliomas', 'Disease', 'MESH:D002345', (104, 136)) ('intellectual disability', 'Phenotype', 'HP:0001249', (181, 204)) 43307 33182397 The variant, located in the Pro-Trp-Trp-Pro (PWWP) domain of the protein involved in chromatin targeting, affects a residue mutated in papillary thyroid tumors and located between the two residues found mutated in microcephalic dwarfism patients. ('Trp', 'Chemical', 'MESH:D014364', (36, 39)) ('papillary thyroid tumors', 'Phenotype', 'HP:0002895', (135, 159)) ('Pro', 'Chemical', 'MESH:D011392', (40, 43)) ('mutated', 'Var', (124, 131)) ('papillary thyroid tumors', 'Disease', 'MESH:D000077273', (135, 159)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('microcephalic dwarfism', 'Phenotype', 'HP:0008873', (214, 236)) ('affects', 'Reg', (106, 113)) ('microcephalic dwarfism', 'Disease', (214, 236)) ('microcephalic dwarfism', 'Disease', 'MESH:C537533', (214, 236)) ('tumors', 'Phenotype', 'HP:0002664', (153, 159)) ('Pro', 'Chemical', 'MESH:D011392', (28, 31)) ('patients', 'Species', '9606', (237, 245)) ('papillary thyroid tumors', 'Disease', (135, 159)) ('Trp', 'Chemical', 'MESH:D014364', (32, 35)) ('dwarfism', 'Phenotype', 'HP:0003510', (228, 236)) ('Pro-Trp', 'Chemical', '-', (28, 35)) 43308 33182397 An increased methylation of DNMT3A target genes, compatible with a gain-of-function effect of the alteration, was observed in saliva DNA from the proband and in one independent acute myeloid leukemia sample carrying the same p.Gly332Arg variant. ('methylation', 'MPA', (13, 24)) ('increased', 'PosReg', (3, 12)) ('acute myeloid leukemia', 'Disease', (177, 199)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (225, 236)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (177, 199)) ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (177, 199)) ('leukemia', 'Phenotype', 'HP:0001909', (191, 199)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (183, 199)) ('p.Gly332Arg', 'Var', (225, 236)) 43309 33182397 Although further studies are needed to support a causal role of DNMT3A variants in paraganglioma, the description of a new DNMT3A alteration in a patient with multiple clinical features suggests a heterogeneous phenotypic spectrum related to DNMT3A germline variants. ('variants', 'Var', (71, 79)) ('alteration', 'Var', (130, 140)) ('DNMT3A', 'Gene', (64, 70)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('DNMT3A', 'Gene', (123, 129)) ('paraganglioma', 'Disease', (83, 96)) ('patient', 'Species', '9606', (146, 153)) ('paraganglioma', 'Disease', 'MESH:D010235', (83, 96)) 43310 33182397 The drip of new susceptibility genes involved in the development of pheochromocytoma (PCC) and paraganglioma (PGL), altogether PPGLs, has not ceased since the discovery of pathogenic variants in the succinate dehydrogenase (SDH) genes in the early 2000s. ('SDH', 'Gene', '6390', (224, 227)) ('succinate dehydrogenase', 'Gene', (199, 222)) ('paraganglioma', 'Disease', (95, 108)) ('succinate dehydrogenase', 'Gene', '6390', (199, 222)) ('paraganglioma', 'Phenotype', 'HP:0002668', (95, 108)) ('pheochromocytoma', 'Disease', (68, 84)) ('variants', 'Var', (183, 191)) ('PPGL', 'Chemical', '-', (127, 131)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (68, 84)) ('SDH', 'Gene', (224, 227)) ('PGL', 'Phenotype', 'HP:0002668', (110, 113)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (68, 84)) ('paraganglioma', 'Disease', 'MESH:D010235', (95, 108)) ('PGL', 'Phenotype', 'HP:0002668', (128, 131)) ('PCC', 'Phenotype', 'HP:0002666', (86, 89)) 43311 33182397 Thus, up to 35-40% of PPGL patients carry a germline variant in one of the almost twenty high:or low:penetrant susceptibility genes related to the disease described so far. ('PGL', 'Phenotype', 'HP:0002668', (23, 26)) ('PPGL', 'Disease', (22, 26)) ('germline variant', 'Var', (44, 60)) ('PPGL', 'Chemical', '-', (22, 26)) ('patients', 'Species', '9606', (27, 35)) 43316 33182397 On the one hand, germline de novo loss-of-function variants in DNMT3A cause Tatton-Brown-Rahman syndrome (TBRS), an autosomal dominant condition characterized by overgrowth, intellectual disability and distinctive facial appearance. ('distinctive facial appearance', 'Phenotype', 'HP:0001999', (202, 231)) ('Tatton-Brown-Rahman syndrome', 'Disease', (76, 104)) ('Tatton-Brown-Rahman syndrome', 'Disease', 'OMIM:615879', (76, 104)) ('variants', 'Var', (51, 59)) ('loss-of-function', 'NegReg', (34, 50)) ('overgrowth', 'Phenotype', 'HP:0001548', (162, 172)) ('DNMT3A', 'Gene', (63, 69)) ('intellectual disability', 'Phenotype', 'HP:0001249', (174, 197)) 43317 33182397 On the other hand and despite not being identified until 2010, somatic variants in DNMT3A are one of the most recurrent events across blood cancers of the myeloid lineage. ('variants', 'Var', (71, 79)) ('blood cancers', 'Disease', (134, 147)) ('blood cancers', 'Phenotype', 'HP:0001909', (134, 147)) ('age', 'Gene', (167, 170)) ('cancers', 'Phenotype', 'HP:0002664', (140, 147)) ('blood cancers', 'Disease', 'MESH:D007022', (134, 147)) ('age', 'Gene', '5973', (167, 170)) ('DNMT3A', 'Gene', (83, 89)) ('cancer', 'Phenotype', 'HP:0002664', (140, 146)) 43318 33182397 Up to 22% of acute myeloid leukemia (AML) patients carry a somatic variant in DNMT3A and these alterations have been associated with poor prognosis and adverse survival outcomes for AML patients. ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (13, 35)) ('leukemia', 'Phenotype', 'HP:0001909', (27, 35)) ('associated', 'Reg', (117, 127)) ('DNMT3A', 'Gene', (78, 84)) ('variant', 'Var', (67, 74)) ('AML', 'Disease', 'MESH:D015470', (37, 40)) ('AML', 'Disease', 'MESH:D015470', (182, 185)) ('AML', 'Phenotype', 'HP:0004808', (37, 40)) ('acute myeloid leukemia', 'Disease', (13, 35)) ('AML', 'Disease', (37, 40)) ('AML', 'Phenotype', 'HP:0004808', (182, 185)) ('patients', 'Species', '9606', (42, 50)) ('AML', 'Disease', (182, 185)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (13, 35)) ('patients', 'Species', '9606', (186, 194)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (19, 35)) 43319 33182397 Interestingly, there is overlap of the spectrum of DNMT3A variants in TBRS and hematological malignancies, with some examples of both diseases occurring in the same patient. ('variants', 'Var', (58, 66)) ('hematological malignancies', 'Disease', (79, 105)) ('patient', 'Species', '9606', (165, 172)) ('hematological malignancies', 'Disease', 'MESH:D019337', (79, 105)) ('TBRS', 'Disease', (70, 74)) ('DNMT3A', 'Gene', (51, 57)) ('hematological malignancies', 'Phenotype', 'HP:0004377', (79, 105)) 43320 33182397 Moreover, a germline DNMT3A loss-of-function variant has been found causing familial AML, in this case in the absence of TBRS symptoms. ('loss-of-function', 'NegReg', (28, 44)) ('DNMT3A', 'Gene', (21, 27)) ('familial AML', 'Disease', 'MESH:D015470', (76, 88)) ('familial AML', 'Disease', (76, 88)) ('AML', 'Phenotype', 'HP:0004808', (85, 88)) ('variant', 'Var', (45, 52)) 43321 33182397 We recently identified missense germline variants in DNMT3A in two patients with multiple head and neck PGLs. ('DNMT3A', 'Gene', (53, 59)) ('patients', 'Species', '9606', (67, 75)) ('missense germline variants', 'Var', (23, 49)) ('PGL', 'Phenotype', 'HP:0002668', (104, 107)) 43322 33182397 Unlike what happens in patients with TBRS and in AML and other neoplasia, in which the gene is usually inactivated by loss-of-function alterations, we demonstrated that DNMT3A-mutated PGLs exhibited a significant overall methylation, indicating an activating role of the variants. ('PGL', 'Phenotype', 'HP:0002668', (184, 187)) ('AML', 'Disease', (49, 52)) ('neoplasia', 'Phenotype', 'HP:0002664', (63, 72)) ('PGLs', 'Gene', (184, 188)) ('DNMT3A-mutated', 'Var', (169, 183)) ('patients', 'Species', '9606', (23, 31)) ('neoplasia', 'Disease', 'MESH:D009369', (63, 72)) ('activating', 'PosReg', (248, 258)) ('methylation', 'MPA', (221, 232)) ('neoplasia', 'Disease', (63, 72)) ('AML', 'Disease', 'MESH:D015470', (49, 52)) ('AML', 'Phenotype', 'HP:0004808', (49, 52)) 43324 33182397 This duality has been also reported for the histone methyltransferase EZH2, in which somatic gain-of-function variants are frequently found in lymphoma, while inactivating germline alterations cause the Weaver overgrowth syndrome. ('lymphoma', 'Disease', (143, 151)) ('lymphoma', 'Disease', 'MESH:D008223', (143, 151)) ('overgrowth syndrome', 'Disease', 'MESH:D001765', (210, 229)) ('variants', 'Var', (110, 118)) ('histone methyltransferase', 'Gene', '56979', (44, 69)) ('overgrowth', 'Phenotype', 'HP:0001548', (210, 220)) ('overgrowth syndrome', 'Disease', (210, 229)) ('lymphoma', 'Phenotype', 'HP:0002665', (143, 151)) ('histone methyltransferase', 'Gene', (44, 69)) ('EZH2', 'Gene', '2146', (70, 74)) ('EZH2', 'Gene', (70, 74)) ('gain-of-function', 'PosReg', (93, 109)) 43326 33182397 The filtering process resulted in 541 variants, six of which were found in the public archive ClinVar (Table S1) and only one was found in a gene previously associated to PPGLs, DNMT3A (c.994G > A, p.Gly332Arg; VAF = 0.48). ('AF', 'Disease', 'MESH:D001281', (213, 215)) ('resulted in', 'Reg', (22, 33)) ('variants', 'Var', (38, 46)) ('p.Gly332Arg', 'Var', (199, 210)) ('c.994G > A', 'Var', (187, 197)) ('c.994G > A', 'Mutation', 'rs760854242', (187, 197)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (199, 210)) ('PGL', 'Phenotype', 'HP:0002668', (173, 176)) ('PPGL', 'Chemical', '-', (172, 176)) 43328 33182397 This frequency is below the frequency found for pathogenic variants in SDHB, a gene whose alterations have the lowest penetrance amongst those found in the known PPGL susceptibility genes. ('SDHB', 'Gene', '6390', (71, 75)) ('variants', 'Var', (59, 67)) ('SDHB', 'Gene', (71, 75)) ('PGL', 'Phenotype', 'HP:0002668', (163, 166)) ('PPGL', 'Chemical', '-', (162, 166)) 43329 33182397 The Gly332 residue is located within the Pro-Trp-Trp-Pro (PWWP) domain of DNMT3A, described to function as a chromatin methylation reader by recognizing both DNA and histone methylated lysines. ('lysines', 'Chemical', 'MESH:D008239', (185, 192)) ('Gly332', 'Var', (4, 10)) ('DNA', 'MPA', (158, 161)) ('Pro', 'Chemical', 'MESH:D011392', (53, 56)) ('DNMT3A', 'Gene', (74, 80)) ('Pro', 'Chemical', 'MESH:D011392', (41, 44)) ('Trp', 'Chemical', 'MESH:D014364', (45, 48)) ('Pro-Trp', 'Chemical', '-', (41, 48)) ('Trp', 'Chemical', 'MESH:D014364', (49, 52)) ('Gly332', 'Chemical', '-', (4, 10)) ('histone', 'Protein', (166, 173)) ('recognizing', 'Reg', (141, 152)) 43330 33182397 There are 31 missense variants in gnomAD, including p.Gly332Arg, located within the PWWP domain of DNMT3A, all of them with frequencies bellow 6.4 x 10-5 (Table S2). ('gnomAD', 'Gene', (34, 40)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (52, 63)) ('p.Gly332Arg', 'Var', (52, 63)) 43332 33182397 Three different missense somatic variants have been reported in five independent samples in COSMIC or cBioPortal databases affecting the Gly332 residue (Figure 1a): p.Gly332Glu (n = 1; found in one clear cell renal cell carcinoma), p.Gly332Arg (n = 3; found in PTC, AML and essential thrombocythemia) and p.Gly332Val (n = 1; found in one PTC); although the causality of these variants has not been assessed. ('clear cell renal cell carcinoma', 'Disease', (200, 231)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (211, 231)) ('p.Gly332Glu', 'Var', (167, 178)) ('p.Gly332Arg', 'Var', (234, 245)) ('affecting', 'Reg', (125, 134)) ('essential thrombocythemia', 'Disease', (276, 301)) ('Gly332', 'Chemical', '-', (309, 315)) ('p.Gly332Val', 'Var', (307, 318)) ('Gly332', 'Chemical', '-', (236, 242)) ('essential thrombocythemia', 'Disease', 'MESH:D013920', (276, 301)) ('clear cell renal cell carcinoma', 'Phenotype', 'HP:0006770', (200, 231)) ('carcinoma', 'Phenotype', 'HP:0030731', (222, 231)) ('PTC', 'Phenotype', 'HP:0002895', (263, 266)) ('Gly332', 'Chemical', '-', (139, 145)) ('p.Gly332Val', 'Mutation', 'p.G332V', (307, 318)) ('thrombocythemia', 'Phenotype', 'HP:0001894', (286, 301)) ('p.Gly332Glu', 'Mutation', 'rs751360082', (167, 178)) ('PTC', 'Phenotype', 'HP:0002895', (340, 343)) ('AML', 'Disease', 'MESH:D015470', (268, 271)) ('clear cell renal cell carcinoma', 'Disease', 'MESH:C538614', (200, 231)) ('AML', 'Disease', (268, 271)) ('Gly332', 'Chemical', '-', (169, 175)) ('AML', 'Phenotype', 'HP:0004808', (268, 271)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (234, 245)) 43335 33182397 In the predicted structure of the PWWP domain of the DNMT3A Gly332Arg mutant, the position of the Arg lies opposite to the Phe303 residue and could form an additional side to the conserved aromatic cage formed by the amino acids Phe303, Trp306, Trp330 and Asp333. ('DNMT3A', 'Gene', (53, 59)) ('Trp306', 'Var', (237, 243)) ('Phe303', 'Chemical', '-', (229, 235)) ('age', 'Gene', (199, 202)) ('Gly332Arg', 'SUBSTITUTION', 'None', (60, 69)) ('Gly332Arg', 'Var', (60, 69)) ('Phe303', 'Var', (229, 235)) ('Asp333', 'Chemical', '-', (256, 262)) ('Trp330', 'Chemical', '-', (245, 251)) ('Phe303', 'Chemical', '-', (123, 129)) ('Arg', 'Chemical', 'MESH:D001120', (98, 101)) ('Trp306', 'Chemical', '-', (237, 243)) ('age', 'Gene', '5973', (199, 202)) ('Arg', 'Chemical', 'MESH:D001120', (66, 69)) 43336 33182397 Thus, it is possible that an Arg residue in the 332 position could promote the stabilization of the binding to the trimethyl lysine present in histone H3. ('trimethyl lysine', 'Chemical', 'MESH:C003712', (115, 131)) ('binding', 'Interaction', (100, 107)) ('Arg residue', 'Var', (29, 40)) ('Arg', 'Chemical', 'MESH:D001120', (29, 32)) ('stabilization', 'MPA', (79, 92)) ('trimethyl lysine', 'MPA', (115, 131)) ('promote', 'PosReg', (67, 74)) 43338 33182397 Hierarchical clustering grouped all the controls together and separated from the proband's sample that showed a recognizable methylated profile (Figure 3a), suggesting that the p.Gly332Arg DNMT3A variant produces a similar alteration in germline global methylation than the observed for the previously reported PPGL patients. ('p.Gly332Arg', 'Mutation', 'rs760854242', (177, 188)) ('PPGL', 'Disease', (311, 315)) ('PGL', 'Phenotype', 'HP:0002668', (312, 315)) ('PPGL', 'Chemical', '-', (311, 315)) ('germline global methylation', 'MPA', (237, 264)) ('DNMT3A', 'Gene', (189, 195)) ('patients', 'Species', '9606', (316, 324)) ('p.Gly332Arg', 'Var', (177, 188)) ('alteration', 'Reg', (223, 233)) 43339 33182397 We also speculated that the methylated profile observed upon alteration of DNMT3A in PPGL patients could be similar to the one described for patients with microcephalic dwarfism harboring germline gain-of-function DNMT3A variants. ('microcephalic dwarfism', 'Phenotype', 'HP:0008873', (155, 177)) ('alteration', 'Var', (61, 71)) ('DNMT3A', 'Gene', (75, 81)) ('microcephalic dwarfism', 'Disease', (155, 177)) ('microcephalic dwarfism', 'Disease', 'MESH:C537533', (155, 177)) ('methylated profile', 'MPA', (28, 46)) ('PPGL', 'Gene', (85, 89)) ('variants', 'Var', (221, 229)) ('PGL', 'Phenotype', 'HP:0002668', (86, 89)) ('PPGL', 'Chemical', '-', (85, 89)) ('dwarfism', 'Phenotype', 'HP:0003510', (169, 177)) ('patients', 'Species', '9606', (90, 98)) ('patients', 'Species', '9606', (141, 149)) ('gain-of-function', 'PosReg', (197, 213)) 43340 33182397 To explore this, we investigated the methylation status of the 307 differentially methylated probes in lymphocyte DNAs from the previously reported PGL DNMT3A variant carriers and in blood samples from patients with either overgrowth or dwarfism due to DNMT3A germline variants. ('investigated', 'Reg', (20, 32)) ('PGL DNMT3A', 'Gene', (148, 158)) ('overgrowth', 'CPA', (223, 233)) ('overgrowth', 'Phenotype', 'HP:0001548', (223, 233)) ('dwarfism', 'Phenotype', 'HP:0003510', (237, 245)) ('patients', 'Species', '9606', (202, 210)) ('PGL', 'Phenotype', 'HP:0002668', (148, 151)) ('dwarfism', 'CPA', (237, 245)) ('variant', 'Var', (159, 166)) 43344 33182397 In addition, we were able to collect an AML sample carrying the p.Gly332Arg DNMT3A variant and investigated whether this somatic substitution could also be causing a gain-of-function in AML. ('AML', 'Disease', 'MESH:D015470', (40, 43)) ('p.Gly332Arg', 'Var', (64, 75)) ('AML', 'Disease', 'MESH:D015470', (186, 189)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (64, 75)) ('AML', 'Phenotype', 'HP:0004808', (186, 189)) ('AML', 'Disease', (186, 189)) ('AML', 'Phenotype', 'HP:0004808', (40, 43)) ('AML', 'Disease', (40, 43)) ('DNMT3A', 'Gene', (76, 82)) ('gain-of-function', 'PosReg', (166, 182)) 43345 33182397 To explore this, we profiled one AML sample carrying the p.Gly332Arg DNMT3A variant (this sample also carries another DNMT3A variant and two frameshift variants in TET2), with AML samples extracted from TCGA and carriers of DNMT3A somatic variants known to cause global methylation alterations (i.e., the bona fide p.Arg882 DNMT3A loss-of-function alteration). ('Arg882', 'Chemical', '-', (317, 323)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (57, 68)) ('AML', 'Disease', 'MESH:D015470', (33, 36)) ('AML', 'Phenotype', 'HP:0004808', (176, 179)) ('AML', 'Disease', (176, 179)) ('AML', 'Disease', (33, 36)) ('p.Arg882', 'Var', (315, 323)) ('TET2', 'Gene', '54790', (164, 168)) ('AML', 'Phenotype', 'HP:0004808', (33, 36)) ('loss-of-function', 'NegReg', (331, 347)) ('DNMT3A', 'Gene', (69, 75)) ('AML', 'Disease', 'MESH:D015470', (176, 179)) ('p.Gly332Arg', 'Var', (57, 68)) ('methylation alterations', 'MPA', (270, 293)) ('TET2', 'Gene', (164, 168)) 43346 33182397 We also included three samples carrying additional frameshift TET2 variants. ('TET2', 'Gene', (62, 66)) ('frameshift', 'Var', (51, 61)) ('TET2', 'Gene', '54790', (62, 66)) 43347 33182397 The unsupervised clustering, using the aforementioned methylation signature, revealed that the p.Gly332Arg mutated AML showed a completely different profile to the one observed for the samples carrying the recurrent p.Arg882 DNMT3A inactivating variant (Figure S1). ('AML', 'Disease', 'MESH:D015470', (115, 118)) ('p.Gly332Arg', 'Var', (95, 106)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (95, 106)) ('AML', 'Phenotype', 'HP:0004808', (115, 118)) ('AML', 'Disease', (115, 118)) ('p.Arg882', 'Var', (216, 224)) ('Arg882', 'Chemical', '-', (218, 224)) 43349 33182397 Overall, these results suggest that the p.Gly332Arg DNMT3A variant led, in germline and also in AML, to a characteristic methylation profile, distinct to the profile caused by well-known DNMT3A inactivating variants. ('AML', 'Disease', (96, 99)) ('p.Gly332Arg', 'Var', (40, 51)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (40, 51)) ('methylation profile', 'MPA', (121, 140)) ('DNMT3A', 'Gene', (52, 58)) ('AML', 'Disease', 'MESH:D015470', (96, 99)) ('AML', 'Phenotype', 'HP:0004808', (96, 99)) 43350 33182397 Although the sample carrying the p.Gly332Arg variant harbors an additional variant in the MTase domain of DNMT3A (p.Arg720Cys), its low allele frequency together with the fact that variants in this domain likely disrupt the catalytic activity of the enzyme, supports that the observed methylated profile is caused by the PWWP variant. ('disrupt', 'NegReg', (212, 219)) ('p.Gly332Arg', 'Var', (33, 44)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (33, 44)) ('p.Arg720Cys', 'Mutation', 'rs1197133406', (114, 125)) ('catalytic activity', 'MPA', (224, 242)) 43353 33182397 Later it was demonstrated that this was a consequence of oncometabolite accumulation, caused by pathogenic variants in Krebs cycle genes. ('Krebs', 'Chemical', '-', (119, 124)) ('Krebs', 'Gene', (119, 124)) ('variants', 'Var', (107, 115)) ('oncometabolite accumulation', 'MPA', (57, 84)) 43354 33182397 More recently, disrupting variants in ATRX and in other chromatin-remodeling genes, including post-zygotic H3F3A gain-of-function alterations, have also been found recurrently in PPGLs. ('gain-of-function', 'PosReg', (113, 129)) ('ATRX', 'Gene', (38, 42)) ('H3F3A', 'Gene', '3020', (107, 112)) ('alterations', 'Var', (130, 141)) ('PPGL', 'Chemical', '-', (179, 183)) ('PGL', 'Phenotype', 'HP:0002668', (180, 183)) ('ATRX', 'Gene', '546', (38, 42)) ('H3F3A', 'Gene', (107, 112)) ('PPGLs', 'Disease', (179, 184)) ('variants', 'Var', (26, 34)) 43355 33182397 The identification of DNMT3A activating variants leading to a specific CIMP further supported the association between epigenetic modifications and PPGL development. ('association', 'Interaction', (98, 109)) ('leading to', 'Reg', (49, 59)) ('DNMT3A', 'Gene', (22, 28)) ('PPGL', 'Chemical', '-', (147, 151)) ('variants', 'Var', (40, 48)) ('PGL', 'Phenotype', 'HP:0002668', (148, 151)) ('CIMP', 'Disease', (71, 75)) 43356 33182397 In addition to the variants reported in patients with PGLs, germline gain-of-function DNMT3A variants located in the PWWP domain which cause widespread DNA hypermethylation at polycomb-regulated regions (with the H3K27me3 mark) have been found in patients with microcephalic dwarfism, an extreme growth disorder. ('growth disorder', 'Disease', (296, 311)) ('PGL', 'Phenotype', 'HP:0002668', (54, 57)) ('microcephalic dwarfism', 'Phenotype', 'HP:0008873', (261, 283)) ('microcephalic dwarfism', 'Disease', 'MESH:C537533', (261, 283)) ('patients', 'Species', '9606', (40, 48)) ('dwarfism', 'Phenotype', 'HP:0003510', (275, 283)) ('microcephalic dwarfism', 'Disease', (261, 283)) ('variants', 'Var', (93, 101)) ('patients', 'Species', '9606', (247, 255)) ('growth disorder', 'Phenotype', 'HP:0001507', (296, 311)) ('gain-of-function', 'PosReg', (69, 85)) ('DNMT3A', 'Gene', (86, 92)) ('growth disorder', 'Disease', 'MESH:D006130', (296, 311)) 43357 33182397 A similar growth deficiency has been observed in mice carrying a DNMT3A PWWP germline variant in the Asp329 residue (corresponding to the human Asp333). ('variant in', 'Var', (86, 96)) ('human', 'Species', '9606', (138, 143)) ('growth deficiency', 'Phenotype', 'HP:0001510', (10, 27)) ('mice', 'Species', '10090', (49, 53)) ('growth deficiency', 'Disease', 'MESH:D006130', (10, 27)) ('Asp333', 'Chemical', '-', (144, 150)) ('Asp329', 'Chemical', '-', (101, 107)) ('growth deficiency', 'Disease', (10, 27)) 43358 33182397 This results in DNA hypermethylation and de-repression of developmental regulatory genes that manifests phenotypically as dominant postnatal growth retardation. ('growth retardation', 'Phenotype', 'HP:0001510', (141, 159)) ('postnatal growth retardation', 'Disease', (131, 159)) ('hypermethylation', 'Var', (20, 36)) ('de-repression', 'NegReg', (41, 54)) ('postnatal growth retardation', 'Phenotype', 'HP:0008897', (131, 159)) ('postnatal growth retardation', 'Disease', 'MESH:D006130', (131, 159)) ('developmental regulatory genes', 'Gene', (58, 88)) ('results in DNA', 'Reg', (5, 19)) 43359 33182397 In the same way, the murine equivalent to the human Lys299Ile found in patients with PGL, disrupts both DNA and H3K36me2/3 binding by altering the aromatic cage conformation of the PWWP domain of DNMT3A, finally leading to disruption of the sub-nuclear localization of DNMT3A. ('binding', 'Interaction', (123, 130)) ('altering', 'Reg', (134, 142)) ('H3K36me2/3', 'Protein', (112, 122)) ('PGL', 'Phenotype', 'HP:0002668', (85, 88)) ('Lys299Ile', 'Var', (52, 61)) ('patients', 'Species', '9606', (71, 79)) ('DNA', 'Protein', (104, 107)) ('age', 'Gene', (157, 160)) ('DNMT3A', 'Gene', (196, 202)) ('human', 'Species', '9606', (46, 51)) ('age', 'Gene', '5973', (157, 160)) ('Lys299Ile', 'SUBSTITUTION', 'None', (52, 61)) ('disrupts', 'NegReg', (90, 98)) ('sub-nuclear localization', 'MPA', (241, 265)) ('DNMT3A', 'Gene', (269, 275)) ('murine', 'Species', '10090', (21, 27)) ('disruption', 'Reg', (223, 233)) 43360 33182397 In PGL patients, we demonstrated that germline DNMT3A variants in residues within the PWWP domain caused significant hypermethylation of homeobox-containing genes involved in early embryonic development. ('hypermethylation', 'MPA', (117, 133)) ('DNMT3A', 'Gene', (47, 53)) ('homeobox-containing', 'Gene', (137, 156)) ('PGL', 'Phenotype', 'HP:0002668', (3, 6)) ('variants', 'Var', (54, 62)) ('patients', 'Species', '9606', (7, 15)) 43361 33182397 This contrasts with the widespread hypomethylation observed in TBRS patients carrying germline DNMT3A variants, especially enriched at genes involved in morphogenesis, development and malignancy predisposition pathways. ('variants', 'Var', (102, 110)) ('DNMT3A', 'Gene', (95, 101)) ('malignancy', 'Disease', 'MESH:D009369', (184, 194)) ('patients', 'Species', '9606', (68, 76)) ('malignancy', 'Disease', (184, 194)) 43363 33182397 The conservation of Gly332 within the PWWP domain and its location between Trp330 and Asp333, the two residues altered in patients with microcephalic dwarfism, highly suggest a disruptive role of the variant. ('Asp333', 'Chemical', '-', (86, 92)) ('dwarfism', 'Phenotype', 'HP:0003510', (150, 158)) ('patients', 'Species', '9606', (122, 130)) ('Trp330', 'Chemical', '-', (75, 81)) ('Gly332', 'Chemical', '-', (20, 26)) ('microcephalic dwarfism', 'Phenotype', 'HP:0008873', (136, 158)) ('microcephalic dwarfism', 'Disease', (136, 158)) ('microcephalic dwarfism', 'Disease', 'MESH:C537533', (136, 158)) ('Gly332', 'Var', (20, 26)) 43364 33182397 The substitution of the wild-type Gly332 by an Arg could stabilize the link with trimethylated histone H3 causing, as occurred with the previously reported variants found in PGL patients, a gain of alternative activities by DNMT3A. ('trimethylated histone', 'Chemical', '-', (81, 102)) ('stabilize', 'Reg', (57, 66)) ('PGL', 'Phenotype', 'HP:0002668', (174, 177)) ('link', 'Interaction', (71, 75)) ('alternative activities', 'MPA', (198, 220)) ('patients', 'Species', '9606', (178, 186)) ('DNMT3A', 'Enzyme', (224, 230)) ('Gly332 by an Arg', 'Mutation', 'rs760854242', (34, 50)) ('gain', 'PosReg', (190, 194)) ('PGL', 'Disease', (174, 177)) ('Gly332', 'Var', (34, 40)) 43366 33182397 Moreover, overall alterations of DNA methylation have been also observed in blood cells from TET2 (hypermethylation) or EZH2 (hypomethylation) germline pathogenic loss-of-function variant carriers. ('alterations', 'Reg', (18, 29)) ('EZH2', 'Gene', (120, 124)) ('variant', 'Var', (180, 187)) ('TET2', 'Gene', (93, 97)) ('loss-of-function', 'NegReg', (163, 179)) ('DNA', 'Gene', (33, 36)) ('TET2', 'Gene', '54790', (93, 97)) ('EZH2', 'Gene', '2146', (120, 124)) 43369 33182397 Interestingly, an AML pedigree carrying a germline DNMT3A loss-of-function mutation has no symptoms of TBRS and only three patients with TBRS have been reported to develop AML. ('AML', 'Disease', (18, 21)) ('AML', 'Phenotype', 'HP:0004808', (172, 175)) ('AML', 'Phenotype', 'HP:0004808', (18, 21)) ('mutation', 'Var', (75, 83)) ('patients', 'Species', '9606', (123, 131)) ('loss-of-function', 'NegReg', (58, 74)) ('AML', 'Disease', 'MESH:D015470', (172, 175)) ('DNMT3A', 'Gene', (51, 57)) ('AML', 'Disease', 'MESH:D015470', (18, 21)) ('AML', 'Disease', (172, 175)) 43370 33182397 Somatic alterations in the epigenetic regulators TET2 and DNMT3A represent a frequent cause of clonal hematopoiesis, an aging-related mechanism in which somatic variants in early blood cell progenitors confer an advantage to mutated clones. ('variants', 'Var', (161, 169)) ('age', 'Gene', (218, 221)) ('TET2', 'Gene', (49, 53)) ('alterations', 'Var', (8, 19)) ('hematopoiesis', 'Disease', 'MESH:C536227', (102, 115)) ('age', 'Gene', '5973', (218, 221)) ('cause', 'Reg', (86, 91)) ('DNMT3A', 'Gene', (58, 64)) ('TET2', 'Gene', '54790', (49, 53)) ('hematopoiesis', 'Disease', (102, 115)) 43372 33182397 Interestingly, several variants affecting the Gly332 residue (including p.Gly332Arg and p.Gly332Glu) have been found in healthy individuals with clonal hematopoietic mutations. ('found', 'Reg', (111, 116)) ('Gly332', 'Chemical', '-', (90, 96)) ('p.Gly332Glu', 'Var', (88, 99)) ('Gly332', 'Chemical', '-', (46, 52)) ('Gly332', 'Chemical', '-', (74, 80)) ('p.Gly332Arg', 'Var', (72, 83)) ('p.Gly332Glu', 'Mutation', 'rs751360082', (88, 99)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (72, 83)) 43373 33182397 In fact, the Gly332Arg variant is included in a list of leukemogenic driver mutations affecting genes known to promote clonal expansion of hematopoietic stem cells (Table S2). ('mutations', 'Var', (76, 85)) ('leukemogenic', 'Disease', (56, 68)) ('Gly332Arg', 'SUBSTITUTION', 'None', (13, 22)) ('Gly332Arg', 'Var', (13, 22)) ('promote', 'PosReg', (111, 118)) 43374 33182397 It has been suggested that the presence of some pathogenic TBRS variants amongst the general population is due to age-related clonal hematopoiesis, questioning the utility of databases such as gnomAD in DNMT3A variant pathogenicity stratification. ('age', 'Gene', '5973', (114, 117)) ('hematopoiesis', 'Disease', 'MESH:C536227', (133, 146)) ('TBRS', 'Gene', (59, 63)) ('hematopoiesis', 'Disease', (133, 146)) ('age', 'Gene', (114, 117)) ('pathogenic', 'Reg', (48, 58)) ('variants', 'Var', (64, 72)) 43375 33182397 The methylated profile observed in the AML sample carrying the p.Gly332Arg variant further suggests that alteration of specific residues within the PWWP domain of DNMT3A leading to activation of its methylation capacities, may have oncogenic potential to both endocrine malignancies (PPGL) and AML. ('DNMT3A', 'Gene', (163, 169)) ('methylation capacities', 'MPA', (199, 221)) ('alteration', 'Var', (105, 115)) ('AML', 'Disease', 'MESH:D015470', (39, 42)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (63, 74)) ('endocrine malignancies', 'Disease', (260, 282)) ('AML', 'Disease', 'MESH:D015470', (294, 297)) ('endocrine malignancies', 'Disease', 'MESH:D004701', (260, 282)) ('PPGL', 'Chemical', '-', (284, 288)) ('endocrine malignancies', 'Phenotype', 'HP:0100568', (260, 282)) ('AML', 'Disease', (39, 42)) ('activation', 'PosReg', (181, 191)) ('AML', 'Disease', (294, 297)) ('PGL', 'Phenotype', 'HP:0002668', (285, 288)) ('p.Gly332Arg', 'Var', (63, 74)) ('AML', 'Phenotype', 'HP:0004808', (39, 42)) ('AML', 'Phenotype', 'HP:0004808', (294, 297)) ('oncogenic potential', 'CPA', (232, 251)) 43379 33182397 Moreover, COSMIC reports only one DNMT3A variant affecting the microcephalic dwarfism-mutated residue Asp333 and it affects an anaplastic thyroid carcinoma, further supporting the relevance of the PWWP domain in thyroid cancer. ('dwarfism', 'Phenotype', 'HP:0003510', (77, 85)) ('anaplastic thyroid carcinoma', 'Phenotype', 'HP:0011779', (127, 155)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (138, 155)) ('variant', 'Var', (41, 48)) ('microcephalic dwarfism', 'Disease', 'MESH:C537533', (63, 85)) ('thyroid carcinoma', 'Disease', (138, 155)) ('thyroid cancer', 'Disease', 'MESH:D013964', (212, 226)) ('affects', 'Reg', (116, 123)) ('DNMT3A', 'Gene', (34, 40)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (212, 226)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (138, 155)) ('microcephalic dwarfism', 'Phenotype', 'HP:0008873', (63, 85)) ('Asp333', 'MPA', (102, 108)) ('carcinoma', 'Phenotype', 'HP:0030731', (146, 155)) ('cancer', 'Phenotype', 'HP:0002664', (220, 226)) ('microcephalic dwarfism', 'Disease', (63, 85)) ('Asp333', 'Chemical', '-', (102, 108)) ('affecting', 'Reg', (49, 58)) ('thyroid cancer', 'Disease', (212, 226)) 43381 33182397 In summary, we describe and perform methylome analysis for a novel DNMT3A activating variant in a patient with multiple clinical features. ('DNMT3A', 'Gene', (67, 73)) ('variant', 'Var', (85, 92)) ('patient', 'Species', '9606', (98, 105)) ('activating', 'PosReg', (74, 84)) 43382 33182397 Although the causal role of DNMT3A variants in PPGL has not been demonstrated, our results stress the heterogeneous phenotypic spectrum related to DNMT3A germline variants and support a dual nature of this gene in disease. ('variants', 'Var', (35, 43)) ('PPGL', 'Chemical', '-', (47, 51)) ('PPGL', 'Gene', (47, 51)) ('DNMT3A', 'Gene', (147, 153)) ('PGL', 'Phenotype', 'HP:0002668', (48, 51)) 43388 33182397 Tumor DNA from a patient with AML and carrying two somatic variants in DNMT3A (p.Gly332Arg and p.Arg720Cys) and two in TET2 (p.Arg1216Ter and p.Arg544Ter) was used for methylation profiling. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('DNMT3A', 'Gene', (71, 77)) ('p.Arg720Cys', 'Var', (95, 106)) ('AML', 'Disease', 'MESH:D015470', (30, 33)) ('p.Arg544Ter', 'Mutation', 'rs1440692352', (142, 153)) ('TET2', 'Gene', '54790', (119, 123)) ('patient', 'Species', '9606', (17, 24)) ('AML', 'Disease', (30, 33)) ('p.Arg544Ter', 'Var', (142, 153)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (79, 90)) ('AML', 'Phenotype', 'HP:0004808', (30, 33)) ('p.Arg1216Ter', 'Var', (125, 137)) ('p.Gly332Arg', 'Var', (79, 90)) ('p.Arg720Cys', 'Mutation', 'rs1197133406', (95, 106)) ('TET2', 'Gene', (119, 123)) ('p.Arg1216Ter', 'Mutation', 'rs1009194427', (125, 137)) 43391 33182397 Filtering was applied to exclude variants present in gnomAD with AF > 0.00005, variants present in internal exomes or in the CIBERER Spanish Variant Server , noncoding substitutions and variants in genomic regions with low mappability, with low depth readings or quality or with the alternative allele present in < 20% of reads. ('substitutions', 'Var', (168, 181)) ('mappability', 'MPA', (223, 234)) ('variants', 'Var', (79, 87)) ('AF', 'Disease', 'MESH:D001281', (65, 67)) ('variants', 'Var', (186, 194)) 43392 33182397 The PredictSNP1 consensus classifier was used to predict the effect of the only nucleotide substitution affecting a gene previously associated with PPGL and that passed all filtering steps. ('PredictSNP1', 'Gene', '6625', (4, 15)) ('nucleotide substitution', 'Var', (80, 103)) ('PredictSNP1', 'Gene', (4, 15)) ('PGL', 'Phenotype', 'HP:0002668', (149, 152)) ('PPGL', 'Chemical', '-', (148, 152)) 43396 33182397 The H3K36me3 peptide was modelled into the DNMT3A PWWP Gly332Arg mutant structure obtained using the DNMT3B PWWP domain structure bound to H3K36me3 peptide (PDB code 5CIU) as a reference to ensure no clashes with the methylated lysine. ('Gly332Arg', 'SUBSTITUTION', 'None', (55, 64)) ('Gly332Arg', 'Var', (55, 64)) ('DNMT3B', 'Gene', '1789', (101, 107)) ('DNMT3B', 'Gene', (101, 107)) ('lysine', 'Chemical', 'MESH:D008239', (228, 234)) 43400 33182397 In a subsequent analysis, we used the same list of 307 probes to profile methylation data from blood of patients with microcephalic dwarfism (n = 1) or overgrowth syndrome (n = 2) (GSE120428) and compare them to controls (n = 2) and to PGLs carrying DNMT3A variants (n = 2). ('variants', 'Var', (257, 265)) ('methylation', 'MPA', (73, 84)) ('microcephalic dwarfism', 'Phenotype', 'HP:0008873', (118, 140)) ('microcephalic dwarfism', 'Disease', (118, 140)) ('microcephalic dwarfism', 'Disease', 'MESH:C537533', (118, 140)) ('overgrowth syndrome', 'Disease', 'MESH:D001765', (152, 171)) ('dwarfism', 'Phenotype', 'HP:0003510', (132, 140)) ('overgrowth syndrome', 'Disease', (152, 171)) ('overgrowth', 'Phenotype', 'HP:0001548', (152, 162)) ('patients', 'Species', '9606', (104, 112)) ('PGL', 'Phenotype', 'HP:0002668', (236, 239)) 43401 33182397 Finally, we extracted methylation data from 12 AML samples available from The Cancer Genome Atlas (TCGA), corresponding to 213 out of the 307 probes aforementioned for hierarchical clustering with one additional AML sample carrying the p.Gly332Arg variant, another DNMT3A variant (p.Arg720Cys) and two frameshift TET2 mutations. ('p.Gly332Arg', 'Mutation', 'rs760854242', (236, 247)) ('TET2', 'Gene', (313, 317)) ('Cancer', 'Disease', (78, 84)) ('Cancer', 'Disease', 'MESH:D009369', (78, 84)) ('Cancer', 'Phenotype', 'HP:0002664', (78, 84)) ('AML', 'Disease', 'MESH:D015470', (47, 50)) ('AML', 'Disease', 'MESH:D015470', (212, 215)) ('TET2', 'Gene', '54790', (313, 317)) ('AML', 'Disease', (47, 50)) ('p.Arg720Cys', 'Mutation', 'rs1197133406', (281, 292)) ('AML', 'Phenotype', 'HP:0004808', (47, 50)) ('AML', 'Phenotype', 'HP:0004808', (212, 215)) ('p.Gly332Arg', 'Var', (236, 247)) ('AML', 'Disease', (212, 215)) 43402 33182397 The TCGA samples were all carriers of mutations in DNMT3A known to cause global methylation alterations (i.e., p.Arg882Cys/His) and three of them also harbored TET2 frameshift mutations. ('cause', 'Reg', (67, 72)) ('His', 'Chemical', 'MESH:D006639', (123, 126)) ('TET2', 'Gene', '54790', (160, 164)) ('TET2', 'Gene', (160, 164)) ('p.Arg882Cys', 'Var', (111, 122)) ('mutations', 'Var', (38, 47)) ('DNMT3A', 'Gene', (51, 57)) ('global methylation alterations', 'MPA', (73, 103)) ('p.Arg882Cys', 'SUBSTITUTION', 'None', (111, 122)) 43403 33182397 We describe a novel germline DNMT3A variant (p.Gly332Arg) identified by whole-exome sequencing in a patient with multiple clinical features: bilateral carotid PGLs, PTC and idiopathic intellectual disability. ('intellectual disability', 'Phenotype', 'HP:0001249', (184, 207)) ('p.Gly332Arg', 'Var', (45, 56)) ('patient', 'Species', '9606', (100, 107)) ('PGL', 'Phenotype', 'HP:0002668', (159, 162)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (45, 56)) ('PTC', 'Phenotype', 'HP:0002895', (165, 168)) ('DNMT3A', 'Gene', (29, 35)) ('PTC', 'Disease', (165, 168)) 43404 33182397 The variant affects a residue found mutated in papillary thyroid tumors and the structural modelling of the PWWP domain predicts the substitution to alter the interaction of DNMT3A with H3K36me3. ('alter', 'Reg', (149, 154)) ('papillary thyroid tumors', 'Disease', (47, 71)) ('substitution', 'Var', (133, 145)) ('papillary thyroid tumors', 'Phenotype', 'HP:0002895', (47, 71)) ('interaction', 'Interaction', (159, 170)) ('tumors', 'Phenotype', 'HP:0002664', (65, 71)) ('DNMT3A', 'Protein', (174, 180)) ('variant', 'Var', (4, 11)) ('papillary thyroid tumors', 'Disease', 'MESH:D000077273', (47, 71)) ('H3K36me3', 'Protein', (186, 194)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) 43405 33182397 Moreover, we observed an increased methylation of DNMT3A target genes in saliva DNA from the proband and in one independent AML sample carrying the same p.Gly332Arg variant, compatible with a gain-of-function effect of the alteration. ('DNMT3A', 'Gene', (50, 56)) ('AML', 'Phenotype', 'HP:0004808', (124, 127)) ('increased', 'PosReg', (25, 34)) ('AML', 'Disease', (124, 127)) ('methylation', 'MPA', (35, 46)) ('gain-of-function', 'PosReg', (192, 208)) ('AML', 'Disease', 'MESH:D015470', (124, 127)) ('p.Gly332Arg', 'Var', (153, 164)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (153, 164)) 43406 33182397 Although the causal role of DNMT3A variants in PPGL has not been demonstrated, our finding stresses the heterogeneous phenotypic spectrum related to DNMT3A germline variants. ('PGL', 'Phenotype', 'HP:0002668', (48, 51)) ('PPGL', 'Chemical', '-', (47, 51)) ('PPGL', 'Gene', (47, 51)) ('variants', 'Var', (35, 43)) 43407 33182397 The following are available online at , Figure S1: Hierarchical clustering performed with one AML sample carrying the p.Gly332Arg DNMT3A mutation (black circle) and 12 AML samples from TCGA carrying mutations known to cause global methylation alterations: loss-of-function p.Arg882Cys/His DNMT3A mutations (blue boxes) and TET2 frameshift mutations (purple boxes). ('AML', 'Disease', (94, 97)) ('TET2', 'Gene', (323, 327)) ('AML', 'Phenotype', 'HP:0004808', (94, 97)) ('p.Arg882Cys', 'SUBSTITUTION', 'None', (273, 284)) ('p.Arg882Cys', 'Var', (273, 284)) ('His', 'Chemical', 'MESH:D006639', (285, 288)) ('AML', 'Disease', 'MESH:D015470', (168, 171)) ('AML', 'Phenotype', 'HP:0004808', (168, 171)) ('loss-of-function', 'NegReg', (256, 272)) ('DNMT3A', 'Gene', (289, 295)) ('AML', 'Disease', (168, 171)) ('AML', 'Disease', 'MESH:D015470', (94, 97)) ('p.Gly332Arg', 'Var', (118, 129)) ('TET2', 'Gene', '54790', (323, 327)) ('p.Gly332Arg', 'Mutation', 'rs760854242', (118, 129)) 43408 33182397 Profiling was based on methylation data from the 213 probes, out of the 307 significantly differentially methylated between DNMT3A-mutated and non-mutated tissues in patients with PPGL, contained in the Infinium HumanMethylation450 BeadChip, Figure S2: Schematic representation of the methylation analysis pipeline, Table S1: Filtered exome variants found in ClinVar, Table S2: Variants affecting the PWWP domain found in gnomAD, Table S3: List of differentially methylated CpGs between DNMT3A-mutated and non-mutated samples. ('PPGL', 'Chemical', '-', (180, 184)) ('Variants', 'Var', (378, 386)) ('PGL', 'Phenotype', 'HP:0002668', (181, 184)) ('variants', 'Var', (341, 349)) ('Pro', 'Chemical', 'MESH:D011392', (0, 3)) ('patients', 'Species', '9606', (166, 174)) 43446 32481723 In this regard, a correlation between 131I-MIBG treatment dose per body weight and hematological toxicity has been reported in a dose-escalation study conducted by Matthay et al. ('hematological toxicity', 'Disease', 'MESH:D006402', (83, 105)) ('MIBG', 'Chemical', 'MESH:D019797', (43, 47)) ('131I-MIBG', 'Var', (38, 47)) ('hematological toxicity', 'Disease', (83, 105)) 43450 32481723 evaluated the efficacy and safety of the combined therapy with 131I-MIBG and chemotherapy in a 10-day course in 16 children with resistant and relapsed neuroblastoma. ('neuroblastoma', 'Disease', 'MESH:D009447', (152, 165)) ('neuroblastoma', 'Disease', (152, 165)) ('children', 'Species', '9606', (115, 123)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (152, 165)) ('131I-MIBG', 'Var', (63, 72)) ('MIBG', 'Chemical', 'MESH:D019797', (68, 72)) 43452 32481723 The same authors showed the efficacy and the feasibility of 131I-MIBG chemotherapy combination treatment in 13 pediatric patients with newly diagnosed neuroblastoma as well. ('MIBG', 'Chemical', 'MESH:D019797', (65, 69)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (151, 164)) ('131I-MIBG', 'Var', (60, 69)) ('neuroblastoma', 'Disease', 'MESH:D009447', (151, 164)) ('patients', 'Species', '9606', (121, 129)) ('neuroblastoma', 'Disease', (151, 164)) 43468 32481723 However, the utilization of 131I-MIBG has been reported in case of ineffective surgery due to difficult anatomical access (i.e., retroperitoneal localization) or in patients with diffuse metastases of the rare malignant forms. ('metastases', 'Disease', (187, 197)) ('metastases', 'Disease', 'MESH:D009362', (187, 197)) ('131I-MIBG', 'Var', (28, 37)) ('patients', 'Species', '9606', (165, 173)) ('MIBG', 'Chemical', 'MESH:D019797', (33, 37)) 43475 32481723 Therefore, a theragnostic treatment based on the somatostatin analogs has been developed using 177Lu, 111In, and 90Y. ('177Lu', 'Var', (95, 100)) ('90Y', 'Var', (113, 116)) ('111In', 'Var', (102, 107)) ('somatostatin', 'Gene', '6750', (49, 61)) ('177Lu', 'Chemical', 'MESH:C000615061', (95, 100)) ('111In', 'Chemical', 'MESH:C000615551', (102, 107)) ('somatostatin', 'Gene', (49, 61)) 43484 32481723 It is worth mentioning that while 90Y is an almost pure beta- emitter, with a maximum energy of 2.3 MeV and tissue penetration of 11 mm, 177Lu presents lower energy (0.5 MeV) and a range of penetration of 2 mm. ('177Lu', 'Var', (137, 142)) ('energy', 'MPA', (158, 164)) ('177Lu', 'Chemical', 'MESH:C000615061', (137, 142)) 43485 32481723 Furthermore, 177Lu is also characterized by a gamma co-emission that can be utilized for the in vivo imaging. ('177Lu', 'Chemical', 'MESH:C000615061', (13, 18)) ('gamma co-emission', 'MPA', (46, 63)) ('177Lu', 'Var', (13, 18)) 43530 32481723 Pre-therapeutic and therapeutic assessment authors evaluated the efficacy, toxicity, and dosimetry of compartmental radioimmunotherapy and suggested that 131I-labelled3F8 may have clinical utility in maintaining remission in high-risk or recurrent medulloblastoma, with favorable dosimetry. ('toxicity', 'Disease', 'MESH:D064420', (75, 83)) ('toxicity', 'Disease', (75, 83)) ('remission', 'MPA', (212, 221)) ('131I-labelled3F8', 'Var', (154, 170)) ('medulloblastoma', 'Disease', 'MESH:D008527', (248, 263)) ('medulloblastoma', 'Phenotype', 'HP:0002885', (248, 263)) ('medulloblastoma', 'Disease', (248, 263)) 43531 32481723 131I-8H9, binding the membrane protein B7-H3, may present another attractive radiolabeled antibody for targeted radioimmunotherapy in children with brain tumors. ('brain tumors', 'Disease', (148, 160)) ('B7-H3', 'Gene', (39, 44)) ('H9', 'CellLine', 'CVCL:1240', (6, 8)) ('tumors', 'Phenotype', 'HP:0002664', (154, 160)) ('B7-H3', 'Gene', '80381', (39, 44)) ('brain tumors', 'Phenotype', 'HP:0030692', (148, 160)) ('131I-8H9', 'Var', (0, 8)) ('tumor', 'Phenotype', 'HP:0002664', (154, 159)) ('children', 'Species', '9606', (134, 142)) ('brain tumors', 'Disease', 'MESH:D001932', (148, 160)) 43532 32481723 In three pediatric patients with embryonal tumors, radioimmunotherapy with 131I- 8H9 seemed to be safe, and SPECT-based dosimetry showed an advantageous therapeutic index. ('embryonal tumors', 'Disease', 'MESH:D009373', (33, 49)) ('patients', 'Species', '9606', (19, 27)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('embryonal tumors', 'Phenotype', 'HP:0002898', (33, 49)) ('131I- 8H9', 'Var', (75, 84)) ('embryonal tumors', 'Disease', (33, 49)) ('H9', 'CellLine', 'CVCL:1240', (82, 84)) ('tumors', 'Phenotype', 'HP:0002664', (43, 49)) 43533 32481723 Moreover, it has demonstrated a minimal risk of radionecrosis in children treated with intraventricular radioimmunotherapy with radiolabeled antibodies 131I-8H9 and 131I-3F8. ('children', 'Species', '9606', (65, 73)) ('131I-8H9', 'Var', (152, 160)) ('H9', 'CellLine', 'CVCL:1240', (158, 160)) ('131I-3F8', 'Var', (165, 173)) 43543 32481723 A previous multicentric study aimed to determine the response rate, survival, and toxicity of tandem infusions of high activity 131I MIBG in children with relapsed/refractory neuroblastoma. ('neuroblastoma', 'Phenotype', 'HP:0003006', (175, 188)) ('toxicity', 'Disease', (82, 90)) ('children', 'Species', '9606', (141, 149)) ('MIBG', 'Gene', (133, 137)) ('refractory neuroblastoma', 'Disease', 'MESH:D009447', (164, 188)) ('131I', 'Var', (128, 132)) ('refractory neuroblastoma', 'Disease', (164, 188)) ('MIBG', 'Chemical', 'MESH:D019797', (133, 137)) ('toxicity', 'Disease', 'MESH:D064420', (82, 90)) 43564 32481723 New data for the potential use of the theragnostic couple 64Cu/67Cu-SARTATE in neuroblastoma will be provided by an ongoing clinical trial . ('neuroblastoma', 'Phenotype', 'HP:0003006', (79, 92)) ('64Cu', 'Chemical', 'MESH:C000615411', (58, 62)) ('64Cu/67Cu-SARTATE', 'Var', (58, 75)) ('67Cu', 'Chemical', 'MESH:C000615412', (63, 67)) ('neuroblastoma', 'Disease', 'MESH:D009447', (79, 92)) ('neuroblastoma', 'Disease', (79, 92)) ('SARTATE', 'Chemical', '-', (68, 75)) 43567 32481723 131I-CLR1404 has the potential to become a tumor-targeted radiotherapeutic drug with broad applicability in pediatric oncology. ('131I-CLR1404', 'Var', (0, 12)) ('tumor', 'Disease', 'MESH:D009369', (43, 48)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('oncology', 'Phenotype', 'HP:0002664', (118, 126)) ('CLR1404', 'Chemical', 'MESH:C000599353', (5, 12)) ('tumor', 'Disease', (43, 48)) 43573 32481723 Regarding intraventricular radioimmunotherapy in patients with medulloblastoma, groundbreaking radiolabeled antibodies such as 131I-8HD, and 131I-3F8 may be effective. ('131I-8HD', 'Var', (127, 135)) ('medulloblastoma', 'Disease', 'MESH:D008527', (63, 78)) ('medulloblastoma', 'Phenotype', 'HP:0002885', (63, 78)) ('patients', 'Species', '9606', (49, 57)) ('medulloblastoma', 'Disease', (63, 78)) ('131I-3F8', 'Var', (141, 149)) 43578 32481723 124I/131I-8HD radioimmunotherapy with CED infusion, bypassing the BBB, maybe promising in the treatment of these patients as well. ('CED', 'Disease', 'MESH:D003966', (38, 41)) ('patients', 'Species', '9606', (113, 121)) ('CED', 'Disease', (38, 41)) ('124I/131I-8HD', 'Var', (0, 13)) 43586 32023584 Head and Neck Paraganglioma Atypically Carrying a Succinate Dehydrogenase Subunit B Mutation (L157X) A 53-year-old woman was admitted to a hospital for gradual left-ear hearing loss over 2 years. ('Head and Neck Paraganglioma', 'Phenotype', 'HP:0002864', (0, 27)) ('left-ear hearing loss', 'Disease', 'MESH:D004427', (160, 181)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (14, 27)) ('left-ear hearing loss', 'Disease', (160, 181)) ('L157X', 'Var', (94, 99)) ('Paraganglioma', 'Disease', (14, 27)) ('Paraganglioma', 'Disease', 'MESH:D010235', (14, 27)) ('woman', 'Species', '9606', (115, 120)) ('hearing loss', 'Phenotype', 'HP:0000365', (169, 181)) ('L157X', 'Mutation', 'p.L157X', (94, 99)) 43588 32023584 Mutations of succinate dehydrogenase (SDH) were suspected, but SDHB staining remained in the tumor. ('succinate dehydrogenase', 'Gene', '6390', (13, 36)) ('SDHB', 'Gene', (63, 67)) ('SDH', 'Gene', '6390', (63, 66)) ('SDH', 'Gene', '6390', (38, 41)) ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('succinate dehydrogenase', 'Gene', (13, 36)) ('SDH', 'Gene', (63, 66)) ('tumor', 'Disease', (93, 98)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', (38, 41)) ('SDHB', 'Gene', '6390', (63, 67)) ('tumor', 'Disease', 'MESH:D009369', (93, 98)) 43589 32023584 Genetic testing identified a known SDHB mutation (L157X). ('L157X', 'Mutation', 'p.L157X', (50, 55)) ('L157X', 'Var', (50, 55)) ('SDHB', 'Gene', '6390', (35, 39)) ('SDHB', 'Gene', (35, 39)) 43590 32023584 The patient had head and neck paraganglioma with an SDHB mutation (L157X) more typical of an SDHD mutation. ('SDHB', 'Gene', (52, 56)) ('SDHD', 'Gene', (93, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (30, 43)) ('L157X', 'Mutation', 'p.L157X', (67, 72)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (16, 43)) ('patient', 'Species', '9606', (4, 11)) ('SDHB', 'Gene', '6390', (52, 56)) ('neck paraganglioma', 'Disease', (25, 43)) ('L157X', 'Var', (67, 72)) ('SDHD', 'Gene', '6392', (93, 97)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (25, 43)) 43591 32023584 SDHB immunohistochemistry is useful for detecting SDHx mutations, but careful interpretation is needed. ('mutations', 'Var', (55, 64)) ('SDH', 'Gene', (0, 3)) ('SDH', 'Gene', '6390', (50, 53)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDH', 'Gene', (50, 53)) ('SDHB', 'Gene', (0, 4)) ('SDH', 'Gene', '6390', (0, 3)) 43593 32023584 Genetic testing shows that over 30% of patients with PPGL carry germline mutations. ('germline mutations', 'Var', (64, 82)) ('PPGL', 'Chemical', '-', (53, 57)) ('PPGL', 'Gene', (53, 57)) ('patients', 'Species', '9606', (39, 47)) 43596 32023584 Immunohistochemistry for SDHB is reportedly a valuable tool for detecting patients with PPGL carrying SDHA, SDHB, SDHC, or SDHD mutations. ('SDHB', 'Gene', (108, 112)) ('mutations', 'Var', (128, 137)) ('PPGL', 'Chemical', '-', (88, 92)) ('PPGL', 'Gene', (88, 92)) ('patients', 'Species', '9606', (74, 82)) ('SDHD', 'Gene', (123, 127)) ('SDHD', 'Gene', '6392', (123, 127)) ('SDHA', 'Gene', '6389', (102, 106)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDHC', 'Gene', (114, 118)) ('SDHB', 'Gene', (25, 29)) ('SDHB', 'Gene', '6390', (108, 112)) ('SDHC', 'Gene', '6391', (114, 118)) ('SDHA', 'Gene', (102, 106)) 43598 32023584 In the present case, an SDHB germline mutation (L157X) carrier presented with HNPGL, which is generally typical of patients harboring SDHD mutations. ('L157X', 'Var', (48, 53)) ('patients', 'Species', '9606', (115, 123)) ('HNPGL', 'Disease', (78, 83)) ('presented with', 'Reg', (63, 77)) ('SDHD', 'Gene', (134, 138)) ('SDHD', 'Gene', '6392', (134, 138)) ('L157X', 'Mutation', 'p.L157X', (48, 53)) ('SDHB', 'Gene', '6390', (24, 28)) ('SDHB', 'Gene', (24, 28)) 43619 32023584 Based on the tumor locations and pathological diagnosis of carotid paraganglioma, an SDHD mutation was suspected. ('tumor', 'Disease', (13, 18)) ('SDHD', 'Gene', '6392', (85, 89)) ('carotid paraganglioma', 'Disease', (59, 80)) ('tumor', 'Disease', 'MESH:D009369', (13, 18)) ('SDHD', 'Gene', (85, 89)) ('tumor', 'Phenotype', 'HP:0002664', (13, 18)) ('mutation', 'Var', (90, 98)) ('carotid paraganglioma', 'Disease', 'MESH:D002345', (59, 80)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) ('carotid paraganglioma', 'Phenotype', 'HP:0100635', (59, 80)) 43620 32023584 SDHB immunostaining of the tumor was performed to detect the absence of SDHB staining due to SDHx mutations, but SDHB was actually immunopositive with a weak-diffuse pattern (Fig. ('SDH', 'Gene', (113, 116)) ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('SDHB', 'Gene', '6390', (113, 117)) ('SDH', 'Gene', '6390', (93, 96)) ('tumor', 'Disease', (27, 32)) ('SDH', 'Gene', (0, 3)) ('SDHB', 'Gene', (72, 76)) ('SDH', 'Gene', '6390', (72, 75)) ('SDHB', 'Gene', (113, 117)) ('mutations', 'Var', (98, 107)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDH', 'Gene', (72, 75)) ('SDH', 'Gene', '6390', (113, 116)) ('SDH', 'Gene', (93, 96)) ('tumor', 'Disease', 'MESH:D009369', (27, 32)) ('SDHB', 'Gene', (0, 4)) ('SDH', 'Gene', '6390', (0, 3)) ('SDHB', 'Gene', '6390', (72, 76)) 43621 32023584 We performed further genetic testing to confirm the presence of an SDHx mutation and to assess the risk of metastasis. ('SDH', 'Gene', '6390', (67, 70)) ('SDH', 'Gene', (67, 70)) ('mutation', 'Var', (72, 80)) 43624 32023584 Surprisingly, genetic testing from a peripheral blood sample identified a known SDHB germline mutation (L157X) (Fig. ('SDHB', 'Gene', (80, 84)) ('L157X', 'Mutation', 'p.L157X', (104, 109)) ('SDHB', 'Gene', '6390', (80, 84)) ('L157X', 'Var', (104, 109)) 43627 32023584 According to recent reports, over 30% of patients with PPGL carry germline mutations, which is more frequent than the rates described in older reports. ('patients', 'Species', '9606', (41, 49)) ('germline mutations', 'Var', (66, 84)) ('PPGL', 'Gene', (55, 59)) ('carry', 'Reg', (60, 65)) ('PPGL', 'Chemical', '-', (55, 59)) 43629 32023584 Mutations of SDHs promote hypoxic signal transduction, which leads to tumorigenesis. ('leads to', 'Reg', (61, 69)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('SDH', 'Gene', (13, 16)) ('tumor', 'Disease', (70, 75)) ('hypoxic signal transduction', 'MPA', (26, 53)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', '6390', (13, 16)) ('promote', 'PosReg', (18, 25)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) 43630 32023584 Genotype-phenotype correlations associated with SDH mutations have been previously reported. ('mutations', 'Var', (52, 61)) ('SDH', 'Gene', (48, 51)) ('SDH', 'Gene', '6390', (48, 51)) 43631 32023584 The SDHB mutation is associated with abdominal extra-adrenal lesions and metastatic disease, while the SDHD mutation is associated with head and neck lesions that are unlikely to cause metastatic disease. ('mutation', 'Var', (9, 17)) ('associated', 'Reg', (120, 130)) ('associated', 'Reg', (21, 31)) ('adrenal lesions and metastatic disease', 'Disease', 'MESH:D018223', (53, 91)) ('SDHB', 'Gene', '6390', (4, 8)) ('SDHD', 'Gene', '6392', (103, 107)) ('SDHB', 'Gene', (4, 8)) ('SDHD', 'Gene', (103, 107)) 43632 32023584 The present patient initially had manifestation of head and neck tumors but was carrying an SDHB mutation. ('SDHB', 'Gene', '6390', (92, 96)) ('neck tumors', 'Disease', 'MESH:D006258', (60, 71)) ('SDHB', 'Gene', (92, 96)) ('tumors', 'Phenotype', 'HP:0002664', (65, 71)) ('head and neck tumors', 'Phenotype', 'HP:0012288', (51, 71)) ('neck tumors', 'Disease', (60, 71)) ('mutation', 'Var', (97, 105)) ('patient', 'Species', '9606', (12, 19)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) 43633 32023584 Genetic testing showed c.470delT in exon 5 of SDHB, resulting in a change from a leucine to a stop codon at position 157 (L157X). ('SDHB', 'Gene', '6390', (46, 50)) ('SDHB', 'Gene', (46, 50)) ('L157X', 'Mutation', 'p.L157X', (122, 127)) ('c.470delT', 'Mutation', 'c.470delT', (23, 32)) ('c.470delT', 'Var', (23, 32)) ('change', 'Reg', (67, 73)) ('leucine', 'Chemical', 'MESH:D007930', (81, 88)) ('L157X', 'Var', (122, 127)) 43635 32023584 According to the reports, all of these patients harboring the SDHB (L157X) mutation had manifestations of paraaortic tumors, in contrast to our patient, who had head and neck tumors. ('tumors', 'Phenotype', 'HP:0002664', (175, 181)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('L157X', 'Var', (68, 73)) ('patient', 'Species', '9606', (39, 46)) ('neck tumors', 'Disease', 'MESH:D006258', (170, 181)) ('patients', 'Species', '9606', (39, 47)) ('tumors', 'Phenotype', 'HP:0002664', (117, 123)) ('paraaortic tumors', 'Disease', (106, 123)) ('neck tumors', 'Disease', (170, 181)) ('tumor', 'Phenotype', 'HP:0002664', (175, 180)) ('patient', 'Species', '9606', (144, 151)) ('L157X', 'Mutation', 'p.L157X', (68, 73)) ('head and neck tumors', 'Phenotype', 'HP:0012288', (161, 181)) ('paraaortic tumors', 'Disease', 'MESH:D009369', (106, 123)) ('SDHB', 'Gene', '6390', (62, 66)) ('SDHB', 'Gene', (62, 66)) 43636 32023584 One of the previous patients showed multiple metastases to the lungs, a typical malignant feature of SDHB mutation. ('SDHB', 'Gene', (101, 105)) ('metastases', 'Disease', 'MESH:D009362', (45, 55)) ('mutation', 'Var', (106, 114)) ('patients', 'Species', '9606', (20, 28)) ('SDHB', 'Gene', '6390', (101, 105)) ('metastases', 'Disease', (45, 55)) 43637 32023584 Our patient, on the other hand, was characterized by manifestations mimicking PPGL with an SDHD mutation rather than SDHB mutations. ('PPGL', 'Disease', (78, 82)) ('SDHB', 'Gene', (117, 121)) ('PPGL', 'Chemical', '-', (78, 82)) ('patient', 'Species', '9606', (4, 11)) ('mutation', 'Var', (96, 104)) ('SDHD', 'Gene', (91, 95)) ('SDHD', 'Gene', '6392', (91, 95)) ('SDHB', 'Gene', '6390', (117, 121)) 43639 32023584 In association with SDH mutations, approximately 80-98% of SDHD mutation carriers have head and neck lesions, while 15-31% of SDHB mutation carriers also have HNPGL. ('SDH', 'Gene', '6390', (126, 129)) ('mutation', 'Var', (64, 72)) ('SDHB', 'Gene', (126, 130)) ('SDH', 'Gene', (20, 23)) ('SDH', 'Gene', (126, 129)) ('SDH', 'Gene', '6390', (20, 23)) ('SDH', 'Gene', (59, 62)) ('SDHD', 'Gene', '6392', (59, 63)) ('SDHB', 'Gene', '6390', (126, 130)) ('HNPGL', 'Disease', (159, 164)) ('SDHD', 'Gene', (59, 63)) ('SDH', 'Gene', '6390', (59, 62)) 43640 32023584 HNPGL patients carrying SDHB germline mutations were recently evaluated, and the metastatic rate was found to be only 6%. ('SDHB', 'Gene', (24, 28)) ('germline', 'Var', (29, 37)) ('patients', 'Species', '9606', (6, 14)) ('SDHB', 'Gene', '6390', (24, 28)) 43641 32023584 This clinical feature differed from the findings of a previous report on SDHB mutation carriers without head and neck lesions. ('SDHB', 'Gene', '6390', (73, 77)) ('mutation', 'Var', (78, 86)) ('SDHB', 'Gene', (73, 77)) 43646 32023584 SDHB immunostaining is useful for detecting the presence of an SDHx mutation in HPPS. ('SDH', 'Gene', '6390', (63, 66)) ('mutation', 'Var', (68, 76)) ('SDH', 'Gene', (0, 3)) ('SDH', 'Gene', (63, 66)) ('HPPS', 'Disease', 'None', (80, 84)) ('SDHB', 'Gene', '6390', (0, 4)) ('HPPS', 'Disease', (80, 84)) ('SDHB', 'Gene', (0, 4)) ('SDH', 'Gene', '6390', (0, 3)) 43648 32023584 Loss of SDH enzymatic activity suggests the biallelic inactivation of SDH genes. ('SDH', 'Gene', '6390', (8, 11)) ('SDH', 'Gene', '6390', (70, 73)) ('Loss', 'NegReg', (0, 4)) ('SDH', 'Gene', (8, 11)) ('SDH', 'Gene', (70, 73)) ('biallelic inactivation', 'Var', (44, 66)) 43651 32023584 The weak-diffuse pattern is more frequent in tumors with SDHD mutations than in those with SDHB mutations. ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('SDHD', 'Gene', '6392', (57, 61)) ('tumors', 'Disease', (45, 51)) ('SDHB', 'Gene', '6390', (91, 95)) ('tumors', 'Phenotype', 'HP:0002664', (45, 51)) ('weak-diffuse pattern', 'MPA', (4, 24)) ('SDHD', 'Gene', (57, 61)) ('tumors', 'Disease', 'MESH:D009369', (45, 51)) ('SDHB', 'Gene', (91, 95)) ('mutations', 'Var', (62, 71)) 43653 32023584 The present case demonstrated a weak-diffuse pattern on SDHB immunostaining, and genetic testing ultimately identified a known SDHB mutation. ('SDHB', 'Gene', '6390', (56, 60)) ('SDHB', 'Gene', (56, 60)) ('SDHB', 'Gene', '6390', (127, 131)) ('SDHB', 'Gene', (127, 131)) ('mutation', 'Var', (132, 140)) 43654 32023584 SDHB immunostaining was not confirmed in the two previously reported cases with SDHB mutations (L157X). ('SDHB', 'Gene', (80, 84)) ('L157X', 'Var', (96, 101)) ('mutations (L157X', 'Var', (85, 101)) ('SDHB', 'Gene', '6390', (0, 4)) ('L157X', 'Mutation', 'p.L157X', (96, 101)) ('SDHB', 'Gene', (0, 4)) ('SDHB', 'Gene', '6390', (80, 84)) 43658 32023584 We herein report rare case of HNPGL with an SDHB mutation (L157X), which are typical phenotypes of an SDHD mutation. ('L157X', 'Var', (59, 64)) ('SDHB', 'Gene', '6390', (44, 48)) ('SDHB', 'Gene', (44, 48)) ('SDHD', 'Gene', (102, 106)) ('SDHD', 'Gene', '6392', (102, 106)) ('L157X', 'Mutation', 'p.L157X', (59, 64)) 43659 32023584 SDHB immunohistochemistry is a valuable tool for detecting SDHx mutations, but careful interpretation is needed. ('SDH', 'Gene', (0, 3)) ('SDH', 'Gene', (59, 62)) ('SDHB', 'Gene', '6390', (0, 4)) ('mutations', 'Var', (64, 73)) ('SDHB', 'Gene', (0, 4)) ('SDH', 'Gene', '6390', (0, 3)) ('SDH', 'Gene', '6390', (59, 62)) 43674 30991354 PPGL frequently produces catecholamines and can manifest with several cardiovascular syndromes, including stress cardiomyopathy and myocardial infarction. ('manifest', 'Reg', (48, 56)) ('stress cardiomyopathy', 'Disease', 'MESH:D054549', (106, 127)) ('myocardial infarction', 'Disease', (132, 153)) ('myocardial infarction', 'Disease', 'MESH:D009203', (132, 153)) ('catecholamines', 'MPA', (25, 39)) ('cardiovascular syndromes', 'Disease', 'MESH:D002318', (70, 94)) ('man', 'Species', '9606', (48, 51)) ('stress cardiomyopathy', 'Disease', (106, 127)) ('PPGL', 'Var', (0, 4)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (132, 153)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (113, 127)) ('PPGL', 'Chemical', '-', (0, 4)) ('cardiovascular syndromes', 'Disease', (70, 94)) ('catecholamines', 'Chemical', 'MESH:D002395', (25, 39)) ('produces', 'Reg', (16, 24)) 43793 30740044 Thus, we chose to analyze the progenitors of the sympathetic and chromaffin lineages at the level of the ZO at E10.5 and E11.5. ('Th', 'Chemical', 'MESH:D013910', (0, 2)) ('E11.5', 'Var', (121, 126)) ('chromaffin', 'Chemical', '-', (65, 75)) ('E10.5', 'Var', (111, 116)) 43796 30740044 By injecting tamoxifen (TAM) at E10.5 or E11.5 and analyzing the ZO with the mesenteric/para-aortic sympathetic ganglia around it, we found that the two components are of different origin, with RetTOM+ cells traced from either E10.5 or E11.5 giving rise only to the sympathetic mesenteric and para-aortic ganglia and not chromaffin cells of the ZO (Figures 1B,C). ('TAM', 'Chemical', 'MESH:D013629', (24, 27)) ('Ret', 'Gene', '19713', (194, 197)) ('para-aortic ganglia', 'Disease', 'MESH:D001018', (293, 312)) ('para-aortic sympathetic ganglia', 'Disease', (88, 119)) ('tamoxifen', 'Chemical', 'MESH:D013629', (13, 22)) ('E11.5', 'Var', (236, 241)) ('para-aortic ganglia', 'Disease', (293, 312)) ('para-aortic sympathetic ganglia', 'Disease', 'MESH:D001018', (88, 119)) ('chromaffin', 'Chemical', '-', (321, 331)) ('E10.5', 'Var', (227, 232)) ('Ret', 'Gene', (194, 197)) 43806 30740044 As mentioned above, cells of the Ret+ lineage traced from E10.5 and E11.5 delineated specifically the sympathetic mesenteric and para-aortic ganglia and not the chromaffin cells of ZO, indicating that the neuroendocrine chromaffin cells of the ZO are not derived from Ret+ precursors. ('para-aortic ganglia', 'Disease', (129, 148)) ('chromaffin', 'Chemical', '-', (161, 171)) ('Ret', 'Gene', '19713', (33, 36)) ('chromaffin', 'Chemical', '-', (220, 230)) ('Ret', 'Gene', (268, 271)) ('E10.5', 'Var', (58, 63)) ('para-aortic ganglia', 'Disease', 'MESH:D001018', (129, 148)) ('Ret', 'Gene', '19713', (268, 271)) ('E11.5', 'Var', (68, 73)) ('Ret', 'Gene', (33, 36)) 43808 30740044 Thus, given the absence of RetTOM+ cells traced from E10.5 and E11.5 in the chromaffin cells of the ZO, we reasoned that the organ could be derived from nerve-associated SCPs, similarly to the chromaffin cells of the adrenal gland. ('E10.5', 'Var', (53, 58)) ('Ret', 'Gene', (27, 30)) ('chromaffin', 'Chemical', '-', (76, 86)) ('Ret', 'Gene', '19713', (27, 30)) ('Th', 'Chemical', 'MESH:D013910', (0, 2)) ('E11.5', 'Var', (63, 68)) ('chromaffin', 'Chemical', '-', (193, 203)) 43810 30740044 It was previously shown that neural crest migration is complete by E11.5 and at this stage there are no neural crest cells at the embryo trunk which are multipotent and can give rise directly to sympathetic neurons. ('rat', 'Species', '10116', (45, 48)) ('give rise', 'Reg', (173, 182)) ('E11.5', 'Var', (67, 72)) 43812 30740044 This resulted in tracing of SCPs along the nerves exiting the spinal cord and at the vicinity of the SA primordium by E12.5 (Figure 2A). ('Th', 'Chemical', 'MESH:D013910', (0, 2)) ('resulted in', 'Reg', (5, 16)) ('E12.5', 'Var', (118, 123)) ('SA', 'Chemical', '-', (101, 103)) 43828 30740044 To induce a significant decrease in SCPs (all of which are SOX10+), we injected TAM both at E11.5 and E12.5 (Figure 4K). ('SOX10', 'Gene', '20665', (59, 64)) ('E12.5', 'Var', (102, 107)) ('TAM', 'Chemical', 'MESH:D013629', (80, 83)) ('SCPs', 'MPA', (36, 40)) ('decrease', 'NegReg', (24, 32)) ('SOX10', 'Gene', (59, 64)) 43830 30740044 Upon SCP-ablation, ZO was significantly affected, as shown by a 32.45% decrease in total TH+ cell numbers. ('decrease', 'NegReg', (71, 79)) ('SCP-ablation', 'Var', (5, 17)) ('TH+', 'Chemical', 'MESH:D013910', (89, 92)) 43834 30740044 Firstly, upon TAM injection at E11.5 in Plp1YFP mice, we find a 5-10% tracing of the sympathetic neurons of the para-aortic ganglia. ('E11.5', 'Var', (31, 36)) ('Plp1', 'Gene', (40, 44)) ('mice', 'Species', '10090', (48, 52)) ('Plp1', 'Gene', '18823', (40, 44)) ('para-aortic ganglia', 'Disease', 'MESH:D001018', (112, 131)) ('para-aortic ganglia', 'Disease', (112, 131)) ('TAM', 'Chemical', 'MESH:D013629', (14, 17)) 43835 30740044 Secondly, we observe a noticeable reduction in the size of the para-aortic ganglia upon ablation of the visceral motorneurons, which are responsible for the delivery of SCPs to the SA anlage. ('ablation', 'Var', (88, 96)) ('para-aortic ganglia', 'Disease', (63, 82)) ('para-aortic ganglia', 'Disease', 'MESH:D001018', (63, 82)) ('reduction', 'NegReg', (34, 43)) ('size', 'MPA', (51, 55)) ('SA', 'Chemical', '-', (181, 183)) 43836 30740044 However, glial ablation by TAM injection at E11.5 and E12.5 does not seem to significantly affect these ganglia, which could be due to the non-extensive expression of the transgene in this population. ('E12.5', 'Var', (54, 59)) ('E11.5', 'Var', (44, 49)) ('TAM', 'Chemical', 'MESH:D013629', (27, 30)) 43838 30740044 The lineage tracing experiments proved that Ascl1+ progenitors contribute to the development of ZO (Figure 1D), and suggested that the absence of Ascl1 should inhibit the differentiation of SCPs toward chromaffin cells in ZO. ('Ascl1', 'Gene', (44, 49)) ('development', 'CPA', (81, 92)) ('absence', 'Var', (135, 142)) ('Ascl1', 'Gene', '17172', (146, 151)) ('chromaffin', 'Chemical', '-', (202, 212)) ('Ascl1', 'Gene', (146, 151)) ('differentiation of SCPs toward chromaffin cells', 'CPA', (171, 218)) ('Ascl1', 'Gene', '17172', (44, 49)) ('Th', 'Chemical', 'MESH:D013910', (0, 2)) ('inhibit', 'NegReg', (159, 166)) 43842 30740044 Contrary to this, homozygous mutant embryos (Ascl1CreERT/CreERT2;R26TOM/+) lacked the mesenteric ganglion and para-aortic sympathetic ganglia located above the dorsal aorta and featured an obvious decrease of TH+ chromaffin cells in ZO (Figures 5A,B). ('TH+ chromaffin cells', 'CPA', (209, 229)) ('lacked', 'NegReg', (75, 81)) ('Ascl1', 'Gene', '17172', (45, 50)) ('para-aortic sympathetic ganglia', 'Disease', (110, 141)) ('TH+ chromaffin', 'Chemical', '-', (209, 223)) ('para-aortic sympathetic ganglia', 'Disease', 'MESH:D001018', (110, 141)) ('Ascl1', 'Gene', (45, 50)) ('mesenteric ganglion and', 'CPA', (86, 109)) ('decrease', 'NegReg', (197, 205)) ('R26TOM/+', 'Var', (65, 73)) 43843 30740044 Furthermore, in the location of the mutant ZO, we observed TH+/CARThigh/Ascl1TOM+ and TH-/CARThigh/Ascl1TOM+ cells almost uniquely in mutant embryos, which might mean that Ascl1 is also involved in the downregulation of sympathetic-like markers such as CART in immature progenitors in order for them to differentiate into mature TH+/CART- cells, or that a very small portion of the mesenteric ganglion was formed but did not separate from the future ZO. ('Ascl1', 'Gene', '17172', (72, 77)) ('CART', 'Gene', '27220', (253, 257)) ('CART', 'Gene', '27220', (333, 337)) ('rat', 'Species', '10116', (429, 432)) ('TH+', 'Chemical', 'MESH:D013910', (329, 332)) ('Th', 'Chemical', 'MESH:D013910', (93, 95)) ('TH+', 'Chemical', 'MESH:D013910', (59, 62)) ('CART', 'Gene', (90, 94)) ('Ascl1', 'Gene', (72, 77)) ('Th', 'Chemical', 'MESH:D013910', (66, 68)) ('mutant', 'Var', (134, 140)) ('CART', 'Gene', (63, 67)) ('Ascl1', 'Gene', '17172', (172, 177)) ('CART', 'Gene', (253, 257)) ('CART', 'Gene', '27220', (90, 94)) ('downregulation', 'NegReg', (202, 216)) ('Ascl1', 'Gene', '17172', (99, 104)) ('CART', 'Gene', (333, 337)) ('Ascl1', 'Gene', (172, 177)) ('CART', 'Gene', '27220', (63, 67)) ('mutant', 'Var', (36, 42)) ('Ascl1', 'Gene', (99, 104)) 43845 30740044 Furthermore, analysis of E15.5 embryos using the SCP (glial) markers S100B and SOX10 revealed an accumulation of S100B+/SOX10+/Ascl1TOM+ SCPs in mutant embryos, which were almost absent in control embryos (Figure 5C). ('Ascl1', 'Gene', '17172', (127, 132)) ('Ascl1', 'Gene', (127, 132)) ('SOX10', 'Gene', '20665', (79, 84)) ('mutant', 'Var', (145, 151)) ('S100B', 'Gene', '20203', (113, 118)) ('S100B', 'Gene', (113, 118)) ('SOX10', 'Gene', (120, 125)) ('accumulation', 'PosReg', (97, 109)) ('S100B', 'Gene', (69, 74)) ('SOX10', 'Gene', (79, 84)) ('S100B', 'Gene', '20203', (69, 74)) ('SOX10', 'Gene', '20665', (120, 125)) 43846 30740044 These results suggest that in the absence of Ascl1, the SCPs that serve as progenitors of the future chromaffin cells are not able to differentiate and are abnormally accumulating either in the SCP stage (as shown by the presence of S100B+/SOX10+/Ascl1TOM+ cells in the mutant) or in the transition from an immature neuroblast-like cell to a mature chromaffin cell (as seen by the numerous CART+/Ascl1TOM+ cells in the mutant within the abnormal ZO) (Figures 5D,E). ('chromaffin', 'Chemical', '-', (349, 359)) ('Ascl1', 'Gene', '17172', (247, 252)) ('mutant', 'Var', (419, 425)) ('Ascl1', 'Gene', (247, 252)) ('CART', 'Gene', (390, 394)) ('SOX10', 'Gene', '20665', (240, 245)) ('Ascl1', 'Gene', '17172', (396, 401)) ('Ascl1', 'Gene', '17172', (45, 50)) ('CART', 'Gene', '27220', (390, 394)) ('Ascl1', 'Gene', (396, 401)) ('Ascl1', 'Gene', (45, 50)) ('S100B', 'Gene', '20203', (233, 238)) ('S100B', 'Gene', (233, 238)) ('chromaffin', 'Chemical', '-', (101, 111)) ('SOX10', 'Gene', (240, 245)) ('Th', 'Chemical', 'MESH:D013910', (0, 2)) 43872 30740044 All tracing experiments using inducible CreERT2 lines (Plp1, Sox10, Ret and Ascl1-driven) were performed using heterozygotes for both the CreERT2 and the reporter R26RYFP or R26RTOMATO. ('R26RTOMATO', 'Var', (174, 184)) ('Ret', 'Gene', (68, 71)) ('R26RYFP', 'Var', (163, 170)) ('Plp1', 'Gene', '18823', (55, 59)) ('Ret', 'Gene', '19713', (68, 71)) ('Ascl1', 'Gene', '17172', (76, 81)) ('Ascl1', 'Gene', (76, 81)) ('Sox10', 'Gene', '20665', (61, 66)) ('Sox10', 'Gene', (61, 66)) ('Plp1', 'Gene', (55, 59)) 43909 30740044 In accordance to these observations, by using the RetCreERT2;R26TOM strain and injecting TAM at E10.5 and E11.5, 24- and 48-h prior to the detection for the first chromaffin cells in the SA primordium, we showed that at E15.5 RetTOM was expressed specifically in the sympathetic ganglia and was almost absent in the ZO chromaffin cells, suggesting a lineage split of SA progenitors as early as E10.5. ('Ret', 'Gene', '19713', (50, 53)) ('chromaffin', 'Chemical', '-', (319, 329)) ('Ret', 'Gene', (226, 229)) ('ZO chromaffin', 'Chemical', '-', (316, 329)) ('SA', 'Chemical', '-', (187, 189)) ('Ret', 'Gene', '19713', (226, 229)) ('chromaffin', 'Chemical', '-', (163, 173)) ('E15.5', 'Var', (220, 225)) ('TAM', 'Chemical', 'MESH:D013629', (89, 92)) ('SA', 'Chemical', '-', (367, 369)) ('Ret', 'Gene', (50, 53)) 43912 30740044 Next, using the inducible Ascl1CreERT2;R26TOM strain, we observed that recombination at E11.5 resulted in Ascl1TOM+ cells found only in the ZO. ('Ascl1', 'Gene', (106, 111)) ('E11.5', 'Var', (88, 93)) ('Ascl1', 'Gene', '17172', (106, 111)) ('Ascl1', 'Gene', '17172', (26, 31)) ('Ascl1', 'Gene', (26, 31)) 43913 30740044 Thus, our results showed an established lineage separation between sympathetic and chromaffin progenitors at around E10.5 and E11.5, a time point at which only SOX10+ cells are detected at the adrenal gland anlage but no TH+ cells. ('rat', 'Species', '10116', (52, 55)) ('SOX10', 'Gene', (160, 165)) ('chromaffin', 'Chemical', '-', (83, 93)) ('TH+', 'Chemical', 'MESH:D013910', (221, 224)) ('E11.5', 'Var', (126, 131)) ('Th', 'Chemical', 'MESH:D013910', (0, 2)) ('SOX10', 'Gene', '20665', (160, 165)) 43917 30740044 Lineage tracing induced in Plp1CreERT2;R26YFP embryos at E11.5, a time when no neural crest cells are found anymore except at the tip of the tail, revealed recombination of roughly half the chromaffin cells of the ZO, while no tracing was observed in most sympathetic structures such as the suprarenal ganglion, the mesenteric ganglion and anterior part of the sympathetic chain. ('Plp1', 'Gene', (27, 31)) ('recombination', 'Var', (156, 169)) ('chromaffin', 'Chemical', '-', (190, 200)) ('Plp1', 'Gene', '18823', (27, 31)) 43919 30740044 To obtain further confirmation of the SCP involvement in ZO development, we injected TAM at E11.5 and E12.5 in mice of the Sox10CreERT2;R26DTA strain and analyzed them at a much later developmental stage (E17.5). ('Sox10', 'Gene', '20665', (123, 128)) ('Sox10', 'Gene', (123, 128)) ('E12.5', 'Var', (102, 107)) ('mice', 'Species', '10090', (111, 115)) ('TAM', 'Chemical', 'MESH:D013629', (85, 88)) 43920 30740044 This genetic manipulation allowed for almost total glial ablation, as seen by the numbers of SOX10+ cells and resulted in a significant decrease in the total chromaffin cell numbers of the ZO, but left all sympathetic ganglia unaffected. ('genetic manipulation', 'Var', (5, 25)) ('chromaffin cell numbers', 'CPA', (158, 181)) ('chromaffin', 'Chemical', '-', (158, 168)) ('decrease', 'NegReg', (136, 144)) ('SOX10', 'Gene', '20665', (93, 98)) ('Th', 'Chemical', 'MESH:D013910', (0, 2)) ('glial', 'CPA', (51, 56)) ('SOX10', 'Gene', (93, 98)) 43922 30740044 Targeted SCP-ablation might be compensated in the sympathetic component through increased proliferation of the remaining neuroblasts during development. ('rat', 'Species', '10116', (97, 100)) ('increased', 'PosReg', (80, 89)) ('SCP-ablation', 'Var', (9, 21)) 43925 30740044 Taken together, these studies suggest that Ascl1 ablation should lead to the accumulation of defective progenitors of the SA fates that are not able to differentiate into Th-expressing cells. ('accumulation', 'PosReg', (77, 89)) ('SA', 'Chemical', '-', (122, 124)) ('Th', 'Chemical', 'MESH:D013910', (171, 173)) ('Ascl1', 'Gene', '17172', (43, 48)) ('ablation', 'Var', (49, 57)) ('Ascl1', 'Gene', (43, 48)) 43928 30740044 Indeed, in Ascl1CreERT2/CreERT2;R26TOM/+ mutant embryos at E15.5, following TAM injection at E10.5, we observed a plethora of glial-marker-expressing Ascl1TOM+ cells that were in much fewer numbers in the control Ascl1CreERT2/+;R26TOM/+ embryos, accompanied by a significant decrease in TH+ cell numbers. ('Ascl1', 'Gene', (150, 155)) ('Ascl1', 'Gene', (213, 218)) ('TAM', 'Chemical', 'MESH:D013629', (76, 79)) ('mutant', 'Var', (41, 47)) ('Ascl1', 'Gene', (11, 16)) ('Ascl1', 'Gene', '17172', (11, 16)) ('decrease', 'NegReg', (275, 283)) ('TH+ cell numbers', 'CPA', (287, 303)) ('Ascl1', 'Gene', '17172', (150, 155)) ('plethora', 'Phenotype', 'HP:0001050', (114, 122)) ('TH+', 'Chemical', 'MESH:D013910', (287, 290)) ('Ascl1', 'Gene', '17172', (213, 218)) 43934 30740044 Nerve ablation resulted in significant chromaffin cell loss in the ZO and a mild phenotype in the posterior sympathetic ganglia, indicating that at least some component of the ZO must also be neural-crest derived or that some of the SCPs reached the forming ZO just before the nerve underwent apoptosis. ('loss', 'NegReg', (55, 59)) ('Nerve ablation', 'Var', (0, 14)) ('ablation', 'Var', (6, 14)) ('chromaffin', 'Chemical', '-', (39, 49)) ('chromaffin cell', 'CPA', (39, 54)) 43935 30740044 Moreover, we observed that the ZO was composed from CART-/TH+ cells and CART+/TH+ cells, and that both subtypes were significantly reduced upon the visceral nerve ablation. ('ablation', 'Var', (163, 171)) ('CART', 'Gene', (52, 56)) ('CART', 'Gene', (72, 76)) ('CART', 'Gene', '27220', (52, 56)) ('reduced', 'NegReg', (131, 138)) ('CART', 'Gene', '27220', (72, 76)) ('TH+', 'Chemical', 'MESH:D013910', (78, 81)) ('TH+', 'Chemical', 'MESH:D013910', (58, 61)) 43942 30740044 In an attempt to examine their organization in space, we performed an array of experiments on whole embryo trunks during early stages of SA development, ranging from E12.5 to E13.5. ('E13.5', 'Var', (175, 180)) ('E12.5', 'Var', (166, 171)) ('SA', 'Chemical', '-', (137, 139)) 43974 30150569 In addition, mutation of succinate dehydrogenase gene subunits SDHB and SDHD are strongly correlated with extra-adrenal location, younger age, multiple tumors, metastasis and poor prognosis. ('extra-adrenal location', 'Disease', (106, 128)) ('multiple tumors', 'Disease', (143, 158)) ('SDHB', 'Gene', (63, 67)) ('multiple tumors', 'Disease', 'MESH:D009369', (143, 158)) ('SDHD', 'Disease', 'None', (72, 76)) ('correlated', 'Reg', (90, 100)) ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('mutation', 'Var', (13, 21)) ('SDHD', 'Disease', (72, 76)) ('metastasis', 'Disease', (160, 170)) ('SDHB', 'Gene', '6390', (63, 67)) ('tumors', 'Phenotype', 'HP:0002664', (152, 158)) 44015 30150569 There are 20 susceptibility genes for PPGLs at present: SDHA, SDHAF2, SDHC, KIF1B, TMEM127, FH, NF1, RET, VHL, SDHD, SDHB, MAX, HRAS, ATRX, EPAS1/HIF2A, MEN1, EGLN1/PDH2, EGLN2/PDH1, MDH2 and IDH1 in various types of mutations including germline only, germline and somatic, somatic only, somatic and somatic mosaicism and single patients or families. ('TMEM127', 'Gene', '55654', (83, 90)) ('ATRX', 'Gene', (134, 138)) ('EPAS1', 'Gene', (140, 145)) ('MDH2', 'Gene', '4191', (183, 187)) ('ATRX', 'Gene', '546', (134, 138)) ('SDHC', 'Gene', (70, 74)) ('HIF2A', 'Gene', '2034', (146, 151)) ('MEN1', 'Gene', (153, 157)) ('EGLN2', 'Gene', '112398', (171, 176)) ('IDH1', 'Gene', '3417', (192, 196)) ('SDHB', 'Gene', '6390', (117, 121)) ('HIF2A', 'Gene', (146, 151)) ('FH', 'Disease', 'MESH:D006938', (92, 94)) ('EGLN2', 'Gene', (171, 176)) ('EGLN1', 'Gene', '54583', (159, 164)) ('PGL', 'Phenotype', 'HP:0002668', (39, 42)) ('SDHD', 'Disease', (111, 115)) ('SDHA', 'Gene', (56, 60)) ('KIF1B', 'Gene', '23095', (76, 81)) ('PPGLs', 'Gene', (38, 43)) ('EGLN1', 'Gene', (159, 164)) ('HRAS', 'Gene', '3265', (128, 132)) ('SDHA', 'Gene', '6389', (56, 60)) ('SDHAF2', 'Gene', (62, 68)) ('SDHB', 'Gene', (117, 121)) ('EPAS1', 'Gene', '2034', (140, 145)) ('SDHAF2', 'Gene', '54949', (62, 68)) ('SDHA', 'Gene', (62, 66)) ('VHL', 'Gene', '7428', (106, 109)) ('HRAS', 'Gene', (128, 132)) ('MDH2', 'Gene', (183, 187)) ('PPGLs', 'Chemical', '-', (38, 43)) ('VHL', 'Gene', (106, 109)) ('RET', 'Gene', '5979', (101, 104)) ('patients', 'Species', '9606', (329, 337)) ('SDHC', 'Gene', '6391', (70, 74)) ('SDHD', 'Disease', 'None', (111, 115)) ('SDHA', 'Gene', '6389', (62, 66)) ('NF1', 'Gene', '4763', (96, 99)) ('TMEM127', 'Gene', (83, 90)) ('KIF1B', 'Gene', (76, 81)) ('IDH1', 'Gene', (192, 196)) ('MEN1', 'Gene', '4221', (153, 157)) ('NF1', 'Gene', (96, 99)) ('mutations', 'Var', (217, 226)) ('RET', 'Gene', (101, 104)) 44016 30150569 Germline mutations in predisposition genes are found in 25-30% of PPGLs overall. ('Germline mutations', 'Var', (0, 18)) ('PGL', 'Phenotype', 'HP:0002668', (67, 70)) ('PPGLs', 'Disease', (66, 71)) ('found', 'Reg', (47, 52)) ('PPGLs', 'Chemical', '-', (66, 71)) 44017 30150569 Germline mutations in succinate dehydrogenase subunit x (SDHx) including SDHA, SDHB, SDHC, SDHD and SDHAF2 are the most common genetic cause of PPGLs, occurring in up to 25% of cases. ('Germline mutations', 'Var', (0, 18)) ('PPGLs', 'Disease', (144, 149)) ('SDHA', 'Gene', (73, 77)) ('cause', 'Reg', (135, 140)) ('SDHA', 'Gene', '6389', (73, 77)) ('SDHB', 'Gene', (79, 83)) ('SDHC', 'Gene', (85, 89)) ('SDHD', 'Disease', 'None', (91, 95)) ('PPGLs', 'Chemical', '-', (144, 149)) ('SDHA', 'Gene', (100, 104)) ('SDHx', 'Gene', (57, 61)) ('PGL', 'Phenotype', 'HP:0002668', (145, 148)) ('SDHA', 'Gene', '6389', (100, 104)) ('SDHAF2', 'Gene', (100, 106)) ('SDHx', 'Chemical', '-', (57, 61)) ('SDHAF2', 'Gene', '54949', (100, 106)) ('SDHC', 'Gene', '6391', (85, 89)) ('SDHB', 'Gene', '6390', (79, 83)) ('SDHD', 'Disease', (91, 95)) 44023 30150569 Loss of SDHB protein immunoreactivity in tumors with SDHx mutation is reported with 100% sensitivity and 84% specificity. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('SDHx', 'Chemical', '-', (53, 57)) ('SDHB', 'Gene', '6390', (8, 12)) ('tumors', 'Phenotype', 'HP:0002664', (41, 47)) ('SDHx', 'Gene', (53, 57)) ('tumors', 'Disease', (41, 47)) ('tumors', 'Disease', 'MESH:D009369', (41, 47)) ('SDHB', 'Gene', (8, 12)) ('Loss', 'NegReg', (0, 4)) ('mutation', 'Var', (58, 66)) ('immunoreactivity', 'MPA', (21, 37)) ('protein', 'Protein', (13, 20)) 44025 30150569 The SDHB mutation is the only established factor that indicates future metastasis. ('mutation', 'Var', (9, 17)) ('SDHB', 'Gene', (4, 8)) ('SDHB', 'Gene', '6390', (4, 8)) 44051 30150569 Non-functioning PPGLs including SDHB mutation in part but not all are interested in the view point of cell maturation and function of catecholamine synthesis and secretion. ('catecholamine', 'Chemical', 'MESH:D002395', (134, 147)) ('SDHB', 'Gene', '6390', (32, 36)) ('PPGLs', 'Chemical', '-', (16, 21)) ('mutation', 'Var', (37, 45)) ('SDHB', 'Gene', (32, 36)) ('PGL', 'Phenotype', 'HP:0002668', (17, 20)) 44106 30148191 MIBG negativity was also reported to be associates with its malignant character and SDHB mutation. ('MIBG', 'Chemical', 'MESH:D019797', (0, 4)) ('SDHB', 'Gene', '6390', (84, 88)) ('mutation', 'Var', (89, 97)) ('SDHB', 'Gene', (84, 88)) ('MIBG', 'Gene', (0, 4)) 44109 30148191 Another study, tumors with an intense accumulation of FDG tended to have SDH mutation. ('tumors', 'Disease', (15, 21)) ('tumors', 'Phenotype', 'HP:0002664', (15, 21)) ('SDH', 'Gene', '6390', (73, 76)) ('mutation', 'Var', (77, 85)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('FDG', 'Chemical', 'MESH:D019788', (54, 57)) ('SDH', 'Gene', (73, 76)) ('tumors', 'Disease', 'MESH:D009369', (15, 21)) 44132 29350258 In addition, the mice treated with 0.28, 0.56 and 1.11 MBq of 211At-MABG showed only a temporary weight reduction, with recovery in weight by day 10. ('211At', 'Chemical', '-', (62, 67)) ('weight', 'MPA', (132, 138)) ('mice', 'Species', '10090', (17, 21)) ('211At-MABG', 'Gene', (62, 72)) ('0.56', 'Var', (41, 45)) ('weight reduction', 'Disease', 'MESH:D015431', (97, 113)) ('weight reduction', 'Disease', (97, 113)) 44133 29350258 211At-MABG exhibited a strong tumor volume-reducing effect in a mouse model of pheochromocytoma without weight reduction. ('pheochromocytoma', 'Disease', 'MESH:D010673', (79, 95)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (79, 95)) ('211At-MABG', 'Var', (0, 10)) ('weight reduction', 'Disease', 'MESH:D015431', (104, 120)) ('tumor', 'Disease', 'MESH:D009369', (30, 35)) ('weight reduction', 'Disease', (104, 120)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('pheochromocytoma', 'Disease', (79, 95)) ('211At', 'Chemical', '-', (0, 5)) ('tumor', 'Disease', (30, 35)) ('mouse', 'Species', '10090', (64, 69)) 44134 29350258 Therefore, 211At-MABG might be an effective therapeutic agent for the treatment of malignant pheochromocytoma. ('211At', 'Chemical', '-', (11, 16)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('211At-MABG', 'Var', (11, 21)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (83, 109)) ('malignant pheochromocytoma', 'Disease', (83, 109)) 44139 29350258 Of these treatments, 131I-MIBG has been shown to prolong survival. ('131I-MIBG', 'Chemical', '-', (21, 30)) ('131I-MIBG', 'Var', (21, 30)) ('prolong', 'PosReg', (49, 56)) ('survival', 'CPA', (57, 65)) 44140 29350258 131I-MIBG is a false analog of norepinephrine and is therefore taken into the pheochromocytoma cell via the uptake-1 mechanism. ('pheochromocytoma', 'Disease', (78, 94)) ('131I-MIBG', 'Var', (0, 9)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (78, 94)) ('norepinephrine', 'Chemical', 'MESH:D009638', (31, 45)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (78, 94)) ('131I-MIBG', 'Chemical', '-', (0, 9)) 44141 29350258 131I-MIBG, because of the cytotoxic effects of beta-radiation, can improve survival in patients with malignant pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (111, 127)) ('131I-MIBG', 'Var', (0, 9)) ('beta-', 'Chemical', '-', (47, 52)) ('survival', 'MPA', (75, 83)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (101, 127)) ('malignant pheochromocytoma', 'Disease', (101, 127)) ('patients', 'Species', '9606', (87, 95)) ('improve', 'PosReg', (67, 74)) ('131I-MIBG', 'Chemical', '-', (0, 9)) 44146 29350258 The therapeutic applications of alpha-emitters have mainly focused on 211At, 233Ra, 213Bi and 225Ac. ('233Ra', 'Var', (77, 82)) ('213Bi', 'Var', (84, 89)) ('211At', 'Var', (70, 75)) ('211At', 'Chemical', '-', (70, 75)) 44152 29350258 The purpose of the present study was to investigate the therapeutic effects of 211At-MABG in a pheochromocytoma model both in vitro and in vivo. ('211At-MABG', 'Var', (79, 89)) ('pheochromocytoma', 'Disease', (95, 111)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (95, 111)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (95, 111)) ('211At', 'Chemical', '-', (79, 84)) 44168 29350258 When the PC12 tumor volumes had reached approximately 50 mm3, the mice (body weight 20.89 +- 1.30 g) were injected intravenously with 211At-MABG (0.28, 0.56, 1.11, 1.85, 3.70 and 5.55 MBq; five mice per dose) or PBS (ten mice). ('PC12', 'CellLine', 'CVCL:0481', (9, 13)) ('tumor', 'Disease', (14, 19)) ('mice', 'Species', '10090', (66, 70)) ('0.28', 'Var', (146, 150)) ('mice', 'Species', '10090', (221, 225)) ('211At', 'Chemical', '-', (134, 139)) ('tumor', 'Disease', 'MESH:D009369', (14, 19)) ('PBS', 'Chemical', '-', (212, 215)) ('mice', 'Species', '10090', (194, 198)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) 44187 29350258 The inhibition assay showed that desipramine (DMI), a selective inhibitor of the norepinephrine transporter, and dl-norepinephrine significantly inhibited cell uptake of the product (p < 0.01, Supplementary Fig. ('dl-norepinephrine', 'Var', (113, 130)) ('desipramine', 'Chemical', 'MESH:D003891', (33, 44)) ('dl-norepinephrine', 'Chemical', 'MESH:D009638', (113, 130)) ('DMI', 'Chemical', 'MESH:D003891', (46, 49)) ('cell uptake', 'CPA', (155, 166)) ('inhibited', 'NegReg', (145, 154)) 44190 29350258 211At-MABG treatment dose-dependently increased the proportion of cells with DNA DSB and the percentages of cells with DNA DSB treated with 2.0 and 6.0 kBq/mL 211At-MABG were significantly higher than that in the control group (p < 0.05 for 2.0 kBq/mL, p < 0.01 for 6.0 kBq/mL; Fig. ('211At', 'Chemical', '-', (159, 164)) ('211At-MABG', 'Var', (159, 169)) ('higher', 'PosReg', (189, 195)) ('211At', 'Chemical', '-', (0, 5)) ('increased', 'PosReg', (38, 47)) 44191 29350258 Table 1 shows the biodistribution of 211At-MABG in PC12-tumor bearing mice. ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('211At', 'Chemical', '-', (37, 42)) ('mice', 'Species', '10090', (70, 74)) ('PC12-tumor', 'Disease', (51, 61)) ('PC12-tumor', 'Disease', 'MESH:D009369', (51, 61)) ('211At-MABG', 'Var', (37, 47)) 44192 29350258 The uptake of 211At-MABG in tumors was higher than that in other organs and tissues at all time points (Table 1). ('higher', 'PosReg', (39, 45)) ('tumors', 'Disease', (28, 34)) ('tumors', 'Disease', 'MESH:D009369', (28, 34)) ('tumors', 'Phenotype', 'HP:0002664', (28, 34)) ('211At-MABG', 'Var', (14, 24)) ('uptake', 'MPA', (4, 10)) ('211At', 'Chemical', '-', (14, 19)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) 44193 29350258 211At-MABG rapidly accumulated in tumors, and tumor uptake at 1 h after injection reached approximately 30% ID/g. ('tumors', 'Disease', 'MESH:D009369', (34, 40)) ('tumors', 'Disease', (34, 40)) ('tumor', 'Disease', (34, 39)) ('tumor', 'Phenotype', 'HP:0002664', (46, 51)) ('tumors', 'Phenotype', 'HP:0002664', (34, 40)) ('211At-MABG', 'Var', (0, 10)) ('tumor', 'Disease', (46, 51)) ('tumor', 'Disease', 'MESH:D009369', (34, 39)) ('211At', 'Chemical', '-', (0, 5)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('tumor', 'Disease', 'MESH:D009369', (46, 51)) 44204 29350258 In two of the five mice injected with 1.11 MBq 211At-MABG, the tumor disappeared until around day 28. ('tumor', 'Disease', (63, 68)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('211At', 'Chemical', '-', (47, 52)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('mice', 'Species', '10090', (19, 23)) ('211At-MABG', 'Var', (47, 57)) 44210 29350258 On day 3 after injection, all the mice injected with 0.28 and 0.56 MBq of 211At-MABG showed a decrease in body weight of less than 5% (p <= 0.05 for 0.28 MBq, p <= 0.01 for 0.56 MBq). ('211At-MABG', 'Gene', (74, 84)) ('0.28', 'Var', (53, 57)) ('mice', 'Species', '10090', (34, 38)) ('body weight', 'CPA', (106, 117)) ('211At', 'Chemical', '-', (74, 79)) ('decrease', 'NegReg', (94, 102)) 44211 29350258 Also, mice injected with 1.11 MBq of 211At-MABG showed a decrease in body weight of 10-20% (p <= 0.01), and a decrease in body weight of 20% was observed in one of the five mice 3 days after injection. ('decrease', 'NegReg', (57, 65)) ('mice', 'Species', '10090', (6, 10)) ('211At', 'Chemical', '-', (37, 42)) ('body weight', 'CPA', (69, 80)) ('211At-MABG', 'Var', (37, 47)) ('mice', 'Species', '10090', (173, 177)) 44214 29350258 In contrast, all mice treated with 1.85, 3.70 and 5.55 MBq 211At-MABG showed decreases in body weight of more than 20% on day 3 or 4 after 211At-MABG administration, and were therefore killed humanely at that time. ('mice', 'Species', '10090', (17, 21)) ('body weight', 'CPA', (90, 101)) ('211At', 'Chemical', '-', (139, 144)) ('211At-MABG', 'Var', (59, 69)) ('rat', 'Species', '10116', (158, 161)) ('decreases', 'NegReg', (77, 86)) ('211At', 'Chemical', '-', (59, 64)) 44217 29350258 Since 1.11 MBq of 211At-MABG was the MTD, we analyzed the temporal histological changes in the PC12 tumors on days 1, 3 and 7 after administration of 1.11 MBq 211At-MABG. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('211At', 'Chemical', '-', (159, 164)) ('PC12 tumors', 'Disease', (95, 106)) ('PC12 tumors', 'Disease', 'MESH:D009369', (95, 106)) ('tumors', 'Phenotype', 'HP:0002664', (100, 106)) ('211At-MABG', 'Var', (159, 169)) ('rat', 'Species', '10116', (140, 143)) ('211At', 'Chemical', '-', (18, 23)) 44220 29350258 In sections of tumors from mice treated with 211At-MABG, there were no nests of tumor cells, whereas hemorrhage and lymphocyte infiltration were observed (Fig. ('211At', 'Chemical', '-', (45, 50)) ('tumor', 'Disease', 'MESH:D009369', (80, 85)) ('tumors', 'Phenotype', 'HP:0002664', (15, 21)) ('tumor', 'Disease', 'MESH:D009369', (15, 20)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('mice', 'Species', '10090', (27, 31)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('tumors', 'Disease', 'MESH:D009369', (15, 21)) ('rat', 'Species', '10116', (133, 136)) ('tumor', 'Disease', (80, 85)) ('211At-MABG', 'Var', (45, 55)) ('hemorrhage', 'Disease', (101, 111)) ('tumor', 'Disease', (15, 20)) ('hemorrhage', 'Disease', 'MESH:D006470', (101, 111)) ('tumors', 'Disease', (15, 21)) 44222 29350258 In Ki-67-stained sections of tumors from mice treated with 211At-MABG, proliferating (Ki-67-positive) tumor cells tended to decrease in a time-dependent manner (Fig. ('tumor', 'Disease', 'MESH:D009369', (29, 34)) ('Ki-67', 'Gene', (3, 8)) ('tumors', 'Phenotype', 'HP:0002664', (29, 35)) ('decrease', 'NegReg', (124, 132)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('Ki-67', 'Gene', '17345', (86, 91)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('rat', 'Species', '10116', (78, 81)) ('tumors', 'Disease', (29, 35)) ('211At', 'Chemical', '-', (59, 64)) ('mice', 'Species', '10090', (41, 45)) ('Ki-67', 'Gene', (86, 91)) ('211At-MABG', 'Var', (59, 69)) ('Ki-67', 'Gene', '17345', (3, 8)) ('tumors', 'Disease', 'MESH:D009369', (29, 35)) ('proliferating', 'CPA', (71, 84)) ('tumor', 'Disease', (102, 107)) ('tumor', 'Disease', 'MESH:D009369', (102, 107)) ('tumor', 'Disease', (29, 34)) 44223 29350258 Sections of tumors from mice treated with 1.85 MBq 211At-MABG showed larger hemorrhage and necrotic areas than following treatment with 1.11 MBq 211At-MABG (Fig. ('larger', 'PosReg', (69, 75)) ('211At', 'Chemical', '-', (51, 56)) ('hemorrhage', 'Disease', (76, 86)) ('1.85', 'Var', (42, 46)) ('211At', 'Chemical', '-', (145, 150)) ('mice', 'Species', '10090', (24, 28)) ('necrotic', 'Disease', (91, 99)) ('hemorrhage', 'Disease', 'MESH:D006470', (76, 86)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('tumors', 'Disease', (12, 18)) ('tumors', 'Phenotype', 'HP:0002664', (12, 18)) ('necrotic', 'Disease', 'MESH:D009336', (91, 99)) ('tumors', 'Disease', 'MESH:D009369', (12, 18)) 44225 29350258 The area of fibrous tissue was larger following treatment with 5.55 MBq 211At-MABG (Fig. ('5.55 MBq 211At-MABG', 'Var', (63, 82)) ('larger', 'PosReg', (31, 37)) ('211At', 'Chemical', '-', (72, 77)) 44234 29350258 Treatment with 211At-MABG reduced the tumor volumes in PC12 tumor-bearing mice in a dose-dependent manner. ('mice', 'Species', '10090', (74, 78)) ('tumor', 'Disease', (38, 43)) ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('211At', 'Chemical', '-', (15, 20)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('PC12', 'CellLine', 'CVCL:0481', (55, 59)) ('reduced', 'NegReg', (26, 33)) ('211At-MABG', 'Var', (15, 25)) ('tumor', 'Disease', 'MESH:D009369', (38, 43)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('tumor', 'Disease', (60, 65)) 44235 29350258 In mice treated with 211At-MABG, reductions in body weight and in the number of myeloid cells in the bone marrow were not severe. ('body weight', 'CPA', (47, 58)) ('mice', 'Species', '10090', (3, 7)) ('reductions', 'NegReg', (33, 43)) ('211At-MABG', 'Var', (21, 31)) ('211At', 'Chemical', '-', (21, 26)) 44236 29350258 This may indicate that 211At-MABG has tumor-reducing effects without severe radiation-induced side effects. ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('tumor', 'Disease', (38, 43)) ('211At', 'Chemical', '-', (23, 28)) ('tumor', 'Disease', 'MESH:D009369', (38, 43)) ('211At-MABG', 'Var', (23, 33)) 44242 29350258 In this study, 211At-MABG reduced the PC12 cell survival ratio in a dose-dependent manner. ('211At', 'Chemical', '-', (15, 20)) ('PC12', 'CellLine', 'CVCL:0481', (38, 42)) ('reduced', 'NegReg', (26, 33)) ('211At-MABG', 'Var', (15, 25)) ('rat', 'Species', '10116', (57, 60)) ('PC12 cell survival ratio', 'CPA', (38, 62)) 44246 29350258 This cell death mechanism, as confirmed in this study, supports the hypothesis of cell injury by alpha-particles and is most likely the main mechanism by which 211At-MABG causes cell death in pheochromocytoma. ('211At-MABG', 'Var', (160, 170)) ('pheochromocytoma', 'Disease', (192, 208)) ('211At', 'Chemical', '-', (160, 165)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (192, 208)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (192, 208)) 44247 29350258 Similar to the findings of a previous study using a neuroblastoma model, biodistribution studies showed that 211At-MABG accumulated more in the adrenal gland and heart than in other organs. ('neuroblastoma', 'Disease', (52, 65)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (52, 65)) ('211At-MABG', 'Var', (109, 119)) ('211At', 'Chemical', '-', (109, 114)) ('accumulated', 'PosReg', (120, 131)) ('neuroblastoma', 'Disease', 'MESH:D009447', (52, 65)) 44251 29350258 Although we did not directly compare the therapeutic effects of 211At-MABG in the neuroblastoma model to those in pheochromocytoma models (because we have not yet been able to establish a neuroblastoma mouse model), the current data suggest that 211At-MABG may be more effective in pheochromocytoma than in neuroblastoma. ('neuroblastoma', 'Disease', 'MESH:D009447', (82, 95)) ('211At', 'Chemical', '-', (246, 251)) ('211At', 'Chemical', '-', (64, 69)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (282, 298)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (114, 130)) ('neuroblastoma', 'Disease', (188, 201)) ('pheochromocytoma', 'Disease', (114, 130)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (188, 201)) ('pheochromocytoma', 'Disease', (282, 298)) ('neuroblastoma', 'Disease', (307, 320)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (282, 298)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (114, 130)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (307, 320)) ('neuroblastoma', 'Disease', 'MESH:D009447', (188, 201)) ('neuroblastoma', 'Disease', 'MESH:D009447', (307, 320)) ('mouse', 'Species', '10090', (202, 207)) ('neuroblastoma', 'Disease', (82, 95)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (82, 95)) ('211At-MABG', 'Var', (246, 256)) 44252 29350258 Some previous studies investigating neuroblastoma and pheochromocytoma cells in vitro have shown the possible therapeutic effects of 211At-MABG. ('211At-MABG', 'Var', (133, 143)) ('pheochromocytoma', 'Disease', (54, 70)) ('neuroblastoma', 'Disease', 'MESH:D009447', (36, 49)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (54, 70)) ('neuroblastoma', 'Disease', (36, 49)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (54, 70)) ('211At', 'Chemical', '-', (133, 138)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (36, 49)) 44254 29350258 In this regard, this study showed that 211At-MABG has therapeutic effects in vivo, and thus provides further insight into the therapeutic potential of 211At-MABG. ('therapeutic effects', 'CPA', (54, 73)) ('211At', 'Chemical', '-', (151, 156)) ('211At', 'Chemical', '-', (39, 44)) ('211At-MABG', 'Var', (39, 49)) 44255 29350258 In PC12 tumor-bearing mice, 211At-MABG treatment at doses of 0.56 MBq and higher reduced tumor volumes compared with those in control mice. ('mice', 'Species', '10090', (134, 138)) ('tumor', 'Disease', 'MESH:D009369', (8, 13)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('211At-MABG', 'Var', (28, 38)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) ('PC12', 'CellLine', 'CVCL:0481', (3, 7)) ('tumor', 'Disease', (8, 13)) ('reduced', 'NegReg', (81, 88)) ('211At', 'Chemical', '-', (28, 33)) ('mice', 'Species', '10090', (22, 26)) ('tumor', 'Disease', (89, 94)) 44256 29350258 The present study once again provides new insights into the therapeutic effects of 211At-MABG in a pheochromocytoma mouse model. ('pheochromocytoma', 'Disease', (99, 115)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (99, 115)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (99, 115)) ('211At-MABG', 'Var', (83, 93)) ('mouse', 'Species', '10090', (116, 121)) ('211At', 'Chemical', '-', (83, 88)) 44262 29350258 The histological findings of this study confirmed the effectiveness of 211At-MABG in reducing tumor volumes. ('211At-MABG', 'Var', (71, 81)) ('tumor', 'Disease', 'MESH:D009369', (94, 99)) ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('reducing', 'NegReg', (85, 93)) ('tumor', 'Disease', (94, 99)) ('211At', 'Chemical', '-', (71, 76)) 44271 29350258 using the same pheochromocytoma mouse model, administration of 57 MBq of 131I-MIBG maximally reduced tumor volume to approximately 30% of the volume on day 0, while in this study tumors treated with 1.11 MBq 211At-MABG were reduced to approximately 3.3% of the volume on day 0. ('pheochromocytoma', 'Disease', (15, 31)) ('131I-MIBG', 'Chemical', '-', (73, 82)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (15, 31)) ('tumors', 'Disease', (179, 185)) ('211At', 'Chemical', '-', (208, 213)) ('reduced', 'NegReg', (93, 100)) ('tumor', 'Disease', (101, 106)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('tumors', 'Phenotype', 'HP:0002664', (179, 185)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (15, 31)) ('tumors', 'Disease', 'MESH:D009369', (179, 185)) ('tumor', 'Disease', 'MESH:D009369', (179, 184)) ('rat', 'Species', '10116', (53, 56)) ('mouse', 'Species', '10090', (32, 37)) ('tumor', 'Phenotype', 'HP:0002664', (179, 184)) ('131I-MIBG', 'Var', (73, 82)) ('tumor', 'Disease', 'MESH:D009369', (101, 106)) ('tumor', 'Disease', (179, 184)) 44272 29350258 Therefore, the MTD of 211At-MABG, while being a fraction of the MTD for 131I-MIBG, would have a significantly greater tumor-reducing effect (approximately nine times) in pheochromocytoma therapy than 131I-MIBG. ('pheochromocytoma', 'Disease', (170, 186)) ('tumor', 'Disease', 'MESH:D009369', (118, 123)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (170, 186)) ('131I-MIBG', 'Chemical', '-', (200, 209)) ('131I-MIBG', 'Chemical', '-', (72, 81)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('greater', 'PosReg', (110, 117)) ('211At', 'Chemical', '-', (22, 27)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (170, 186)) ('tumor', 'Disease', (118, 123)) ('211At-MABG', 'Var', (22, 32)) 44273 29350258 A systematic review and meta-analysis of the effect of 131I-MIBG on tumor volume found a complete remission rate after 131I-MIBG therapy of 3%, a partial remission rate of 27% and a stable disease rate of 52%. ('tumor', 'Disease', (68, 73)) ('rat', 'Species', '10116', (108, 111)) ('rat', 'Species', '10116', (197, 200)) ('131I-MIBG', 'Chemical', '-', (55, 64)) ('131I-MIBG', 'Var', (119, 128)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('rat', 'Species', '10116', (164, 167)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('131I-MIBG', 'Chemical', '-', (119, 128)) 44274 29350258 In this study, all five mice treated with the MTD of 211At-MABG (1.11 MBq) showed a reduction in tumor volume, and in two of them the tumor disappeared until day 28 after 211At-MABG administration. ('tumor', 'Disease', 'MESH:D009369', (97, 102)) ('mice', 'Species', '10090', (24, 28)) ('reduction', 'NegReg', (84, 93)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('rat', 'Species', '10116', (190, 193)) ('211At', 'Chemical', '-', (53, 58)) ('tumor', 'Disease', (97, 102)) ('tumor', 'Disease', 'MESH:D009369', (134, 139)) ('211At', 'Chemical', '-', (171, 176)) ('211At-MABG', 'Var', (53, 63)) ('tumor', 'Phenotype', 'HP:0002664', (134, 139)) ('tumor', 'Disease', (134, 139)) 44275 29350258 Moreover, based on the percentage tumor volume reduction, in mice receiving 1.11 MBq 211At-MABG, tumor volumes were reduced by 96.7% compared to the volumes at baseline. ('tumor', 'Disease', 'MESH:D009369', (97, 102)) ('mice', 'Species', '10090', (61, 65)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('tumor', 'Disease', (34, 39)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('tumor', 'Disease', (97, 102)) ('211At', 'Chemical', '-', (85, 90)) ('1.11 MBq 211At-MABG', 'Var', (76, 95)) ('reduced', 'NegReg', (116, 123)) ('tumor', 'Disease', 'MESH:D009369', (34, 39)) 44283 29350258 Mice receiving a dose of 211At-MABG lower than or equal to the MTD showed temporary weight reduction after administration but then a gradual recovery in body weight. ('211At', 'Chemical', '-', (25, 30)) ('weight reduction', 'Disease', (84, 100)) ('rat', 'Species', '10116', (115, 118)) ('211At-MABG', 'Var', (25, 35)) ('Mice', 'Species', '10090', (0, 4)) ('weight reduction', 'Disease', 'MESH:D015431', (84, 100)) 44284 29350258 Thus, there was no significant weight reduction at 10 days after 211At-MABG administration compared with the body weight of control mice. ('rat', 'Species', '10116', (84, 87)) ('weight reduction', 'Disease', 'MESH:D015431', (31, 47)) ('weight reduction', 'Disease', (31, 47)) ('mice', 'Species', '10090', (132, 136)) ('211At-MABG', 'Var', (65, 75)) ('211At', 'Chemical', '-', (65, 70)) 44288 29350258 The treatment with 211At-MABG at the MTD (1.11 MBq) caused no marked change in bone marrow cellularity compared with the bone marrow of the control group. ('bone marrow cellularity', 'CPA', (79, 102)) ('marrow cellularity', 'Phenotype', 'HP:0005561', (84, 102)) ('211At-MABG', 'Var', (19, 29)) ('211At', 'Chemical', '-', (19, 24)) 44290 29350258 There were no marked histological changes in any organs treated with the MTD of 211At-MABG, whereas some vacuolated medullary cells were detected in adrenal gland treated with 3.70 and 5.55 MBq of 211At-MABG. ('211At', 'Chemical', '-', (80, 85)) ('vacuolated medullary cells', 'Phenotype', 'HP:0008659', (105, 131)) ('211At', 'Chemical', '-', (197, 202)) ('211At-MABG', 'Var', (80, 90)) ('211At-MABG', 'Var', (197, 207)) 44296 29350258 211At-MABG showed a strong tumor volume-reducing effect in a pheochromocytoma mouse model without severe adverse effects such as weight reduction and reductions in the numbers of myeloid cells in the bone marrow. ('weight reduction', 'Disease', 'MESH:D015431', (129, 145)) ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('211At', 'Chemical', '-', (0, 5)) ('weight reduction', 'Disease', (129, 145)) ('tumor', 'Disease', (27, 32)) ('211At-MABG', 'Var', (0, 10)) ('pheochromocytoma', 'Disease', (61, 77)) ('reductions', 'NegReg', (150, 160)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (61, 77)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (61, 77)) ('mouse', 'Species', '10090', (78, 83)) ('tumor', 'Disease', 'MESH:D009369', (27, 32)) 44300 27594983 She had a germline 1132delG frameshift mutation in MEN1, no mutation in CDKN1B (p27) and no RET mutation, but had both RET polymorphisms Gly691Ser and Arg982Cys. ('Gly691Ser', 'Var', (137, 146)) ('MEN1', 'Gene', (51, 55)) ('CDKN1B', 'Gene', '1027', (72, 78)) ('MEN1', 'Gene', '4221', (51, 55)) ('RET', 'Gene', (119, 122)) ('Arg982Cys', 'Var', (151, 160)) ('RET', 'Gene', (92, 95)) ('CDKN1B', 'Gene', (72, 78)) ('1132delG', 'Mutation', 'c.1132delG', (19, 27)) ('Arg982Cys', 'SUBSTITUTION', 'None', (151, 160)) ('RET', 'Gene', '5979', (119, 122)) ('Gly691Ser', 'SUBSTITUTION', 'None', (137, 146)) ('RET', 'Gene', '5979', (92, 95)) 44301 27594983 This is the first case report of a combination of typical clinical findings of MEN1 harboring a germline MEN1 mutation and the MEN2-like phenotype with negative full RET gene analysis of pathogenic variants. ('MEN1', 'Gene', '4221', (79, 83)) ('MEN', 'Species', '9606', (127, 130)) ('MEN1', 'Gene', (79, 83)) ('RET', 'Gene', '5979', (166, 169)) ('MEN1', 'Gene', (105, 109)) ('MEN', 'Species', '9606', (79, 82)) ('MEN1', 'Gene', '4221', (105, 109)) ('mutation', 'Var', (110, 118)) ('RET', 'Gene', (166, 169)) ('MEN', 'Species', '9606', (105, 108)) 44302 27594983 Possible explanations include a previously unrecognized phenotype-genotype association or the influence of potential phenotypic modifying RET variants. ('RET', 'Gene', (138, 141)) ('variants', 'Var', (142, 150)) ('RET', 'Gene', '5979', (138, 141)) 44304 27594983 Multiple endocrine neoplasia type 1 (MEN1) is a syndrome with autosomal dominant (AD) transmission; it is defined as the presence of endocrine tumors in two out of three of its main affected tissues (parathyroid, anterior pituitary and enter-opancreatic neuroendocrine tissues); it results usually from germline inactivation of the MEN1 tumor suppressor gene. ('germline inactivation', 'Var', (303, 324)) ('tumors', 'Phenotype', 'HP:0002664', (143, 149)) ('tumor', 'Disease', (337, 342)) ('AD', 'Disease', 'MESH:D000544', (82, 84)) ('Multiple endocrine neoplasia type 1', 'Gene', '4221', (0, 35)) ('neoplasia', 'Phenotype', 'HP:0002664', (19, 28)) ('tumor', 'Disease', 'MESH:D009369', (337, 342)) ('MEN1', 'Gene', '4221', (332, 336)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) ('enter-opancreatic neuroendocrine', 'Disease', 'MESH:D004751', (236, 268)) ('MEN1', 'Gene', '4221', (37, 41)) ('MEN1', 'Gene', (332, 336)) ('enter-opancreatic neuroendocrine', 'Disease', (236, 268)) ('tumor', 'Phenotype', 'HP:0002664', (337, 342)) ('autosomal dominant', 'Disease', (62, 80)) ('Multiple endocrine neoplasia type 1', 'Gene', (0, 35)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (9, 28)) ('endocrine tumors', 'Disease', 'MESH:D004701', (133, 149)) ('MEN1', 'Gene', (37, 41)) ('rat', 'Species', '10116', (202, 205)) ('endocrine tumors', 'Disease', (133, 149)) ('tumor', 'Disease', (143, 148)) ('AD', 'Disease', (82, 84)) ('tumor', 'Disease', 'MESH:D009369', (143, 148)) ('autosomal dominant', 'Disease', 'MESH:D017827', (62, 80)) 44305 27594983 Multiple endocrine neoplasia type 2 (MEN2) is defined as one of two clinical syndromes (MEN2A and MEN2B) of an AD disorder with medullary thyroid cancer, each due to germline activating mutation of the RET proto-oncogene. ('MEN', 'Species', '9606', (98, 101)) ('Multiple endocrine neoplasia type 2', 'Disease', (0, 35)) ('neoplasia', 'Phenotype', 'HP:0002664', (19, 28)) ('RET', 'Gene', (202, 205)) ('due to', 'Reg', (159, 165)) ('cancer', 'Phenotype', 'HP:0002664', (146, 152)) ('MEN2B', 'Gene', (98, 103)) ('MEN2B', 'Gene', '5979', (98, 103)) ('MEN', 'Species', '9606', (88, 91)) ('thyroid cancer', 'Disease', (138, 152)) ('thyroid cancer', 'Disease', 'MESH:D013964', (138, 152)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (9, 28)) ('germline activating mutation', 'Var', (166, 194)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (128, 152)) ('MEN2A', 'Gene', '5979', (88, 93)) ('MEN2A', 'Gene', (88, 93)) ('RET', 'Gene', '5979', (202, 205)) ('Multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (0, 35)) ('AD disorder', 'Disease', (111, 122)) ('MEN', 'Species', '9606', (37, 40)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (138, 152)) ('AD disorder', 'Disease', 'MESH:D000544', (111, 122)) 44309 27594983 reported that combined knockout of p27 and p18 CDKI genes in mice caused neoplasia with the tissue specificity simultaneously of MEN1 plus MEN2. ('MEN', 'Species', '9606', (139, 142)) ('mice', 'Species', '10090', (61, 65)) ('MEN', 'Species', '9606', (129, 132)) ('caused', 'Reg', (66, 72)) ('neoplasia', 'Disease', 'MESH:D009369', (73, 82)) ('CDKI', 'Gene', (47, 51)) ('CDKI', 'Gene', '1033', (47, 51)) ('knockout', 'Var', (23, 31)) ('neoplasia', 'Phenotype', 'HP:0002664', (73, 82)) ('p18', 'Gene', '100689229', (43, 46)) ('p27', 'Gene', (35, 38)) ('MEN1', 'Gene', (129, 133)) ('MEN1', 'Gene', '4221', (129, 133)) ('p18', 'Gene', (43, 46)) ('neoplasia', 'Disease', (73, 82)) 44310 27594983 reported homozygous inactivation of p27 in a rat strain manifesting tumors of both MEN1 and MEN2; they also reported a human kindred with a MEN1-like syndrome and a p27 germline mutation. ('tumors', 'Disease', 'MESH:D009369', (68, 74)) ('man', 'Species', '9606', (121, 124)) ('MEN1-like syndrome', 'Disease', (140, 158)) ('man', 'Species', '9606', (56, 59)) ('p27', 'Gene', (36, 39)) ('p27 germline mutation', 'Var', (165, 186)) ('rat', 'Species', '10116', (45, 48)) ('human', 'Species', '9606', (119, 124)) ('MEN1', 'Gene', '4221', (140, 144)) ('tumors', 'Phenotype', 'HP:0002664', (68, 74)) ('MEN1', 'Gene', '4221', (83, 87)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('MEN1-like syndrome', 'Disease', 'MESH:D018761', (140, 158)) ('MEN1', 'Gene', (140, 144)) ('MEN', 'Species', '9606', (92, 95)) ('MEN1', 'Gene', (83, 87)) ('tumors', 'Disease', (68, 74)) ('MEN', 'Species', '9606', (140, 143)) ('MEN', 'Species', '9606', (83, 86)) 44311 27594983 reported rare MEN1-like families with mutation of p27 or other CDKI genes (p21, p18, p15) but no MEN1 mutation. ('p15', 'Gene', (85, 88)) ('p27', 'Gene', (50, 53)) ('MEN1', 'Gene', '4221', (14, 18)) ('p15', 'Gene', '1030', (85, 88)) ('MEN1', 'Gene', (14, 18)) ('MEN1', 'Gene', (97, 101)) ('p18', 'Gene', '100689229', (80, 83)) ('MEN1', 'Gene', '4221', (97, 101)) ('p18', 'Gene', (80, 83)) ('CDKI', 'Gene', (63, 67)) ('mutation', 'Var', (38, 46)) ('p21', 'Gene', (75, 78)) ('CDKI', 'Gene', '1033', (63, 67)) ('p21', 'Gene', '644914', (75, 78)) 44312 27594983 The MEN1-like syndrome attributed to these mutations was later named MENX (in rats) or MEN4 (in humans). ('rats', 'Species', '10116', (78, 82)) ('MEN1-like syndrome', 'Disease', (4, 22)) ('MEN', 'Species', '9606', (4, 7)) ('MEN4', 'Gene', '1027', (87, 91)) ('mutations', 'Var', (43, 52)) ('MEN', 'Species', '9606', (69, 72)) ('MEN1-like syndrome', 'Disease', 'MESH:D018761', (4, 22)) ('MEN', 'Species', '9606', (87, 90)) ('MEN4', 'Gene', (87, 91)) ('humans', 'Species', '9606', (96, 102)) 44313 27594983 Unlike in rodents, none of the reported human families with MEN1 syndrome and CDKI mutations has shown features of MEN2. ('mutations', 'Var', (83, 92)) ('MEN1 syndrome', 'Disease', (60, 73)) ('human', 'Species', '9606', (40, 45)) ('CDKI', 'Gene', '1033', (78, 82)) ('CDKI', 'Gene', (78, 82)) ('MEN1 syndrome', 'Disease', 'MESH:D018761', (60, 73)) ('MEN2', 'Disease', (115, 119)) ('MEN', 'Species', '9606', (115, 118)) ('MEN', 'Species', '9606', (60, 63)) 44314 27594983 Here we report a patient with a germline mutation in the MEN1 gene and features of MEN1 and MEN2. ('MEN1', 'Gene', '4221', (57, 61)) ('MEN', 'Species', '9606', (92, 95)) ('MEN1', 'Gene', (83, 87)) ('MEN', 'Species', '9606', (57, 60)) ('MEN1', 'Gene', '4221', (83, 87)) ('patient', 'Species', '9606', (17, 24)) ('MEN', 'Species', '9606', (83, 86)) ('MEN1', 'Gene', (57, 61)) ('germline mutation in', 'Var', (32, 52)) ('MEN2', 'Disease', (92, 96)) 44322 27594983 Genetic testing revealed a germline frameshift mutation 1132delG (NM_130799.2) in MEN1 (also called c.1039delG (NM_000244.3) and described at the protein level as p.Ala347Argfs*26). ('1132delG', 'Mutation', 'c.1132delG', (56, 64)) ('c.1039delG', 'Mutation', 'c.1039delG', (100, 110)) ('p.Ala347Argfs*26', 'Var', (163, 179)) ('p.Ala347Argfs*26', 'Mutation', 'p.A347RfsX26', (163, 179)) ('MEN1', 'Gene', (82, 86)) ('MEN1', 'Gene', '4221', (82, 86)) 44324 27594983 She was found to be heterozygous for the Gly691Ser polymorphism in RET exon 11 and the Arg982Cys polymorphism in exon 18, as well as several more common synonymous polymorphisms in the gene. ('Arg982Cys', 'Var', (87, 96)) ('Gly691Ser', 'SUBSTITUTION', 'None', (41, 50)) ('RET', 'Gene', '5979', (67, 70)) ('Gly691Ser', 'Var', (41, 50)) ('Arg982Cys', 'SUBSTITUTION', 'None', (87, 96)) ('RET', 'Gene', (67, 70)) 44326 27594983 The patient's son and daughter also tested positive for the MEN1 mutation 1132delG, and full RET sequencing showed that they carry the same both RET polymorphisms (Gly691Ser and Arg982Cys) as their mother. ('Gly691Ser', 'SUBSTITUTION', 'None', (164, 173)) ('RET', 'Gene', '5979', (145, 148)) ('RET', 'Gene', '5979', (93, 96)) ('Gly691Ser', 'Var', (164, 173)) ('Arg982Cys', 'SUBSTITUTION', 'None', (178, 187)) ('patient', 'Species', '9606', (4, 11)) ('1132delG', 'Mutation', 'c.1132delG', (74, 82)) ('MEN1', 'Gene', (60, 64)) ('RET', 'Gene', (145, 148)) ('RET', 'Gene', (93, 96)) ('MEN1', 'Gene', '4221', (60, 64)) ('Arg982Cys', 'Var', (178, 187)) 44335 27594983 As this tumor was initially misdiagnosed as a neurofibroma, loss of heterozygosity (LOH) analysis at the site of the frameshift mutation was attempted but unsuccessful. ('frameshift mutation', 'Var', (117, 136)) ('tumor', 'Disease', 'MESH:D009369', (8, 13)) ('neurofibroma', 'Disease', (46, 58)) ('neurofibroma', 'Phenotype', 'HP:0001067', (46, 58)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('neurofibroma', 'Disease', 'MESH:D009455', (46, 58)) ('tumor', 'Disease', (8, 13)) 44341 27594983 Although the patient carries a germline MEN1 mutation, yet she manifests MEN2-like features, including pheochromocytoma and thickened corneal nerves. ('pheochromocytoma', 'Disease', 'MESH:D010673', (103, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (103, 119)) ('thickened corneal nerves', 'Phenotype', 'HP:0010726', (124, 148)) ('patient', 'Species', '9606', (13, 20)) ('MEN1', 'Gene', (40, 44)) ('man', 'Species', '9606', (63, 66)) ('MEN1', 'Gene', '4221', (40, 44)) ('mutation', 'Var', (45, 53)) ('MEN', 'Species', '9606', (73, 76)) ('pheochromocytoma', 'Disease', (103, 119)) ('MEN', 'Species', '9606', (40, 43)) 44343 27594983 LOH at 11q13 was found in two tumors, thus reinforcing the likelihood that most of these rare tumors result from biallelic MEN1 gene inactivation. ('tumors', 'Disease', (30, 36)) ('tumors', 'Disease', 'MESH:D009369', (30, 36)) ('MEN1', 'Gene', '4221', (123, 127)) ('tumors', 'Phenotype', 'HP:0002664', (30, 36)) ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('biallelic', 'Var', (113, 122)) ('tumors', 'Disease', (94, 100)) ('tumors', 'Disease', 'MESH:D009369', (94, 100)) ('tumors', 'Phenotype', 'HP:0002664', (94, 100)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('MEN1', 'Gene', (123, 127)) ('result from', 'Reg', (101, 112)) 44349 27594983 To our knowledge, this is the first report in the literature of a patient showing classical MEN1 features harboring a germline MEN1 mutation, in addition to MEN2-like features with negative RET mutation analysis. ('MEN', 'Species', '9606', (92, 95)) ('RET', 'Gene', (190, 193)) ('MEN', 'Species', '9606', (127, 130)) ('MEN', 'Species', '9606', (157, 160)) ('rat', 'Species', '10116', (54, 57)) ('patient', 'Species', '9606', (66, 73)) ('RET', 'Gene', '5979', (190, 193)) ('MEN1', 'Gene', '4221', (92, 96)) ('MEN1', 'Gene', '4221', (127, 131)) ('MEN1', 'Gene', (92, 96)) ('mutation', 'Var', (132, 140)) ('MEN1', 'Gene', (127, 131)) 44351 27594983 Testing revealed widespread expression of the RET mutation, Lys666Met; and clinical manifestations included medullary thyroid cancer (MTC) in two members and CCH in three members, out of the eight total members carrying RET mutation. ('RET', 'Gene', '5979', (220, 223)) ('cancer', 'Phenotype', 'HP:0002664', (126, 132)) ('CCH', 'Chemical', '-', (158, 161)) ('thyroid cancer', 'Disease', (118, 132)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (108, 132)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (118, 132)) ('RET', 'Gene', (220, 223)) ('CCH', 'Disease', (158, 161)) ('Lys666Met', 'Var', (60, 69)) ('RET', 'Gene', '5979', (46, 49)) ('thyroid cancer', 'Disease', 'MESH:D013964', (118, 132)) ('man', 'Species', '9606', (84, 87)) ('Lys666Met', 'SUBSTITUTION', 'None', (60, 69)) ('MTC', 'Phenotype', 'HP:0002865', (134, 137)) ('RET', 'Gene', (46, 49)) 44352 27594983 Twelve members of this family also carried a mutation in IVS4 + 1G > A of the MEN1 gene, with a total of four patients carrying both MEN1 and RET mutations. ('RET', 'Gene', '5979', (142, 145)) ('IVS4 + 1G > A', 'Mutation', 'c.IVS4+1G>A', (57, 70)) ('1G > A', 'SUBSTITUTION', 'None', (64, 70)) ('1G > A', 'Var', (64, 70)) ('RET', 'Gene', (142, 145)) ('MEN1', 'Gene', '4221', (78, 82)) ('MEN1', 'Gene', (133, 137)) ('MEN1', 'Gene', (78, 82)) ('MEN1', 'Gene', '4221', (133, 137)) ('patients', 'Species', '9606', (110, 118)) ('carried', 'Reg', (35, 42)) 44353 27594983 In this family, the co-existence of MEN1 and RET mutations did not seem to alter the onset or course of any one tumor type, tumor behavior, or typical phenotype as compared with patients with the same MEN1 or RET mutations separately. ('tumor behavior', 'Disease', 'MESH:D001523', (124, 138)) ('RET', 'Gene', (209, 212)) ('alter', 'Reg', (75, 80)) ('tumor', 'Disease', (124, 129)) ('tumor', 'Disease', 'MESH:D009369', (124, 129)) ('mutations', 'Var', (49, 58)) ('patients', 'Species', '9606', (178, 186)) ('MEN1', 'Gene', '4221', (36, 40)) ('tumor', 'Disease', (112, 117)) ('RET', 'Gene', '5979', (45, 48)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('tumor', 'Disease', 'MESH:D009369', (112, 117)) ('tumor behavior', 'Disease', (124, 138)) ('MEN1', 'Gene', '4221', (201, 205)) ('MEN1', 'Gene', (36, 40)) ('RET', 'Gene', '5979', (209, 212)) ('rat', 'Species', '10116', (227, 230)) ('MEN1', 'Gene', (201, 205)) ('RET', 'Gene', (45, 48)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) 44356 27594983 In addition to a MEN1 mutation IVS5 + 1G > A, RET analysis revealed the polymorphism Tyr791Phe (Table 1). ('Tyr791Phe', 'Var', (85, 94)) ('IVS5 + 1G > A', 'Mutation', 'c.IVS5+1G>A', (31, 44)) ('1G > A', 'SUBSTITUTION', 'None', (38, 44)) ('Tyr791Phe', 'SUBSTITUTION', 'None', (85, 94)) ('RET', 'Gene', '5979', (46, 49)) ('1G > A', 'Var', (38, 44)) ('MEN1', 'Gene', (17, 21)) ('MEN1', 'Gene', '4221', (17, 21)) ('RET', 'Gene', (46, 49)) 44359 27594983 Therefore, it is possible, but not proven, that CCH in this family occurred as a result of phenotypic modifying effect of Tyr791Phe in combination to chronic hypercalcemia. ('Tyr791Phe', 'SUBSTITUTION', 'None', (122, 131)) ('hypercalcemia', 'Disease', (158, 171)) ('hypercalcemia', 'Phenotype', 'HP:0003072', (158, 171)) ('hypercalcemia', 'Disease', 'MESH:D006934', (158, 171)) ('CCH', 'Chemical', '-', (48, 51)) ('CCH', 'Disease', (48, 51)) ('Tyr791Phe', 'Var', (122, 131)) 44360 27594983 The prevalence of the RET polymorphism Gly691Ser is common, occurring in about 40% of Europeans and 37% in Latino populations, whereas Arg982Cys is present in about 2.4% of Europeans and about 5% of Asian populations. ('RET', 'Gene', (22, 25)) ('RET', 'Gene', '5979', (22, 25)) ('Arg982Cys', 'Var', (135, 144)) ('Gly691Ser', 'SUBSTITUTION', 'None', (39, 48)) ('Arg982Cys', 'SUBSTITUTION', 'None', (135, 144)) ('Gly691Ser', 'Var', (39, 48)) 44361 27594983 It is notable that the RET polymorphism Gly691Ser, while not believed to be a pathogenic mutation on its own, has been suggested to modulate the effect of RET mutations. ('Gly691Ser', 'Var', (40, 49)) ('RET', 'Gene', (23, 26)) ('modulate', 'Reg', (132, 140)) ('RET', 'Gene', '5979', (155, 158)) ('RET', 'Gene', (155, 158)) ('RET', 'Gene', '5979', (23, 26)) ('Gly691Ser', 'SUBSTITUTION', 'None', (40, 49)) 44362 27594983 Even when present along with the RET polymorphism Arg982Cys as in our patient, it may modulate the effect of a mutation in a separate gene. ('modulate', 'Reg', (86, 94)) ('RET', 'Gene', (33, 36)) ('Arg982Cys', 'Var', (50, 59)) ('rat', 'Species', '10116', (129, 132)) ('effect', 'MPA', (99, 105)) ('patient', 'Species', '9606', (70, 77)) ('RET', 'Gene', '5979', (33, 36)) ('Arg982Cys', 'SUBSTITUTION', 'None', (50, 59)) 44363 27594983 The allelic frequency of Gly691Ser has been found to be significantly higher in patients with sporadic MTC as compared with normal controls (28 vs 19%). ('patients', 'Species', '9606', (80, 88)) ('MTC', 'Phenotype', 'HP:0002865', (103, 106)) ('Gly691Ser', 'SUBSTITUTION', 'None', (25, 34)) ('Gly691Ser', 'Var', (25, 34)) ('sporadic MTC', 'Disease', (94, 106)) ('higher', 'PosReg', (70, 76)) 44365 27594983 In a case series report of four unrelated patients having neurofibromas and thickened corneal nerves, testing in one patient was negative for NF1 and RET analysis, however, revealed the presence of RET Gly691Ser polymorphism. ('NF1', 'Gene', '4763', (142, 145)) ('RET', 'Gene', (198, 201)) ('RET', 'Gene', (150, 153)) ('Gly691Ser', 'SUBSTITUTION', 'None', (202, 211)) ('thickened corneal nerves', 'Phenotype', 'HP:0010726', (76, 100)) ('Gly691Ser', 'Var', (202, 211)) ('patient', 'Species', '9606', (42, 49)) ('neurofibromas', 'Disease', (58, 71)) ('RET', 'Gene', '5979', (150, 153)) ('RET', 'Gene', '5979', (198, 201)) ('patient', 'Species', '9606', (117, 124)) ('neurofibromas', 'Phenotype', 'HP:0001067', (58, 71)) ('neurofibromas', 'Disease', 'MESH:D009455', (58, 71)) ('patients', 'Species', '9606', (42, 50)) ('NF1', 'Gene', (142, 145)) ('neurofibroma', 'Phenotype', 'HP:0001067', (58, 70)) 44367 27594983 A study researching congenital anomalies of the kidney or urinary tract found that when the Gly691Ser polymorphism is combined with the rarer Arg982Cys RET polymorphism in vitro, this resulted in almost complete loss of MAPK phosphorylation that is critical for kidney formation, which neither polymorphism individually had any effect on. ('RET', 'Gene', (152, 155)) ('Arg982Cys', 'Var', (142, 151)) ('Gly691Ser', 'SUBSTITUTION', 'None', (92, 101)) ('MAPK phosphorylation', 'MPA', (220, 240)) ('anomalies of the kidney', 'Phenotype', 'HP:0000077', (31, 54)) ('RET', 'Gene', '5979', (152, 155)) ('congenital anomalies of the kidney', 'Disease', 'MESH:D000013', (20, 54)) ('Arg982Cys', 'SUBSTITUTION', 'None', (142, 151)) ('congenital anomalies of the kidney', 'Disease', (20, 54)) ('loss', 'NegReg', (212, 216)) ('Gly691Ser', 'Var', (92, 101)) 44368 27594983 This raises the question of whether in our patient the RET polymorphisms Gly691Ser and Arg982Cys, either individually or in combination, are working in synergy with the MEN1 mutation 1132delG or with another gene to produce features of MEN2. ('Arg982Cys', 'Var', (87, 96)) ('1132delG', 'Mutation', 'c.1132delG', (183, 191)) ('1132delG', 'Var', (183, 191)) ('RET', 'Gene', '5979', (55, 58)) ('synergy', 'Disease', 'None', (152, 159)) ('patient', 'Species', '9606', (43, 50)) ('Gly691Ser', 'SUBSTITUTION', 'None', (73, 82)) ('synergy', 'Disease', (152, 159)) ('Gly691Ser', 'Var', (73, 82)) ('MEN1', 'Gene', (169, 173)) ('MEN1', 'Gene', '4221', (169, 173)) ('RET', 'Gene', (55, 58)) ('Arg982Cys', 'SUBSTITUTION', 'None', (87, 96)) ('MEN', 'Species', '9606', (236, 239)) ('MEN', 'Species', '9606', (169, 172)) 44370 27594983 The presence of the RET polymorphisms Gly691Ser or Arg982Cys could in part explain some of the MEN2-like features of this patient. ('RET', 'Gene', '5979', (20, 23)) ('Gly691Ser', 'SUBSTITUTION', 'None', (38, 47)) ('Arg982Cys', 'Var', (51, 60)) ('Gly691Ser', 'Var', (38, 47)) ('patient', 'Species', '9606', (122, 129)) ('RET', 'Gene', (20, 23)) ('Arg982Cys', 'SUBSTITUTION', 'None', (51, 60)) ('MEN', 'Species', '9606', (95, 98)) ('MEN2-like', 'Disease', (95, 104)) 44371 27594983 Other possible explanations of the MEN2-like features include a previously unrecognized phenotype-genotype association with the 1132delG frameshift mutation in MEN1, the presence of an occult RET mutation in the patient undetected by full gene sequencing, association with an unknown MEN2-like syndrome, or the influence of potential phenotypic modifying RET variants. ('MEN2-like syndrome', 'Disease', 'MESH:C537419', (284, 302)) ('MEN', 'Species', '9606', (284, 287)) ('1132delG', 'Mutation', 'c.1132delG', (128, 136)) ('RET', 'Gene', (192, 195)) ('RET', 'Gene', '5979', (355, 358)) ('MEN', 'Species', '9606', (160, 163)) ('1132delG frameshift mutation', 'Var', (128, 156)) ('MEN2-like', 'Disease', (35, 44)) ('patient', 'Species', '9606', (212, 219)) ('MEN1', 'Gene', (160, 164)) ('MEN', 'Species', '9606', (35, 38)) ('MEN1', 'Gene', '4221', (160, 164)) ('RET', 'Gene', '5979', (192, 195)) ('MEN2-like syndrome', 'Disease', (284, 302)) ('RET', 'Gene', (355, 358)) 44374 27594983 Germline MEN1 mutation can rarely be associated with some of the classic expressions of both MEN1 and MEN2-like features together. ('MEN', 'Species', '9606', (102, 105)) ('MEN1', 'Gene', (93, 97)) ('MEN1', 'Gene', '4221', (93, 97)) ('MEN1', 'Gene', '4221', (9, 13)) ('mutation', 'Var', (14, 22)) ('MEN1', 'Gene', (9, 13)) ('associated', 'Reg', (37, 47)) ('MEN', 'Species', '9606', (93, 96)) ('MEN', 'Species', '9606', (9, 12)) 44376 27594983 The presence of potential phenotypic modifying RET variants, could, at least in part, explain the MEN2-like phenotype in this MEN1 patient. ('MEN1', 'Gene', (126, 130)) ('MEN', 'Species', '9606', (98, 101)) ('MEN1', 'Gene', '4221', (126, 130)) ('RET', 'Gene', (47, 50)) ('MEN', 'Species', '9606', (126, 129)) ('variants', 'Var', (51, 59)) ('MEN2-like', 'Disease', (98, 107)) ('RET', 'Gene', '5979', (47, 50)) ('patient', 'Species', '9606', (131, 138)) 44377 27594983 The combination observed in this patient may point to a single molecular pathway, and supports the possibility of as yet unrecognized connections between the molecular pathways for MEN1 (menin protein) and MEN2 (RET protein). ('MEN1', 'Gene', '4221', (181, 185)) ('patient', 'Species', '9606', (33, 40)) ('RET', 'Gene', '5979', (212, 215)) ('menin', 'Gene', '4221', (187, 192)) ('molecular pathway', 'Pathway', (63, 80)) ('point to', 'Reg', (45, 53)) ('MEN', 'Species', '9606', (181, 184)) ('MEN', 'Species', '9606', (206, 209)) ('RET', 'Gene', (212, 215)) ('menin', 'Gene', (187, 192)) ('MEN2', 'Var', (206, 210)) ('MEN1', 'Gene', (181, 185)) 44382 27594983 Furthermore, the presence of certain polymorphisms, may influence the disease course, or result in the manifestation of a new phenotype. ('polymorphisms', 'Var', (37, 50)) ('disease course', 'CPA', (70, 84)) ('result in', 'Reg', (89, 98)) ('influence', 'Reg', (56, 65)) ('presence', 'Var', (17, 25)) ('man', 'Species', '9606', (103, 106)) 44385 27594983 Papers of special note have been highlighted as: of interest; of considerable interest MEN1 and MEN2 are rare autosomal dominant disorders, that result from germline mutations in the MEN1 and RET genes, respectively. ('RET', 'Gene', (197, 200)) ('autosomal dominant', 'Disease', 'MESH:D017827', (115, 133)) ('MEN', 'Species', '9606', (92, 95)) ('MEN', 'Species', '9606', (188, 191)) ('dominant disorders', 'Disease', 'MESH:D004194', (125, 143)) ('autosomal dominant', 'Disease', (115, 133)) ('result from', 'Reg', (150, 161)) ('MEN2', 'Disease', (101, 105)) ('dominant disorders', 'Disease', (125, 143)) ('RET', 'Gene', '5979', (197, 200)) ('MEN1', 'Gene', (188, 192)) ('MEN1', 'Gene', '4221', (92, 96)) ('germline mutations', 'Var', (162, 180)) ('MEN1', 'Gene', '4221', (188, 192)) ('MEN1', 'Gene', (92, 96)) ('MEN', 'Species', '9606', (101, 104)) 44386 27594983 Mutations in other genes, like CDKI, result in a MEN1-like syndrome in man, but in mice result in manifestation of tumors of MEN1 and MEN2. ('MEN1', 'Gene', (49, 53)) ('man', 'Species', '9606', (98, 101)) ('result in', 'Reg', (37, 46)) ('MEN', 'Species', '9606', (49, 52)) ('man', 'Species', '9606', (71, 74)) ('MEN1-like syndrome', 'Disease', 'MESH:D018761', (49, 67)) ('MEN1', 'Gene', '4221', (125, 129)) ('mice', 'Species', '10090', (83, 87)) ('tumors', 'Phenotype', 'HP:0002664', (115, 121)) ('Mutations', 'Var', (0, 9)) ('CDKI', 'Gene', (31, 35)) ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('MEN', 'Species', '9606', (134, 137)) ('MEN1', 'Gene', (125, 129)) ('tumors', 'Disease', (115, 121)) ('MEN', 'Species', '9606', (125, 128)) ('CDKI', 'Gene', '1033', (31, 35)) ('MEN1', 'Gene', '4221', (49, 53)) ('MEN1-like syndrome', 'Disease', (49, 67)) ('tumors', 'Disease', 'MESH:D009369', (115, 121)) 44389 27594983 She had both RET polymorphisms Gly691Ser and Arg982Cys. ('RET', 'Gene', (13, 16)) ('Arg982Cys', 'Var', (45, 54)) ('Gly691Ser', 'SUBSTITUTION', 'None', (31, 40)) ('Gly691Ser', 'Var', (31, 40)) ('Arg982Cys', 'SUBSTITUTION', 'None', (45, 54)) ('RET', 'Gene', '5979', (13, 16)) 44391 27594983 Thickened corneal nerves is typically a feature of MEN2B, or NF1, and has been reported in MEN2A as well, but not in MEN1. ('Thickened', 'Var', (0, 9)) ('Thickened corneal nerves', 'Phenotype', 'HP:0010726', (0, 24)) ('MEN1', 'Gene', '4221', (117, 121)) ('MEN1', 'Gene', (117, 121)) ('MEN2B', 'Gene', (51, 56)) ('NF1', 'Gene', (61, 64)) ('MEN2B', 'Gene', '5979', (51, 56)) ('NF1', 'Gene', '4763', (61, 64)) ('corneal nerves', 'CPA', (10, 24)) ('MEN2A', 'Gene', (91, 96)) ('MEN2A', 'Gene', '5979', (91, 96)) 44393 27594983 The presence of the RET polymorphisms Gly691Ser or Arg982Cys may account for the MEN2-like features of this patient. ('MEN', 'Species', '9606', (81, 84)) ('Gly691Ser', 'SUBSTITUTION', 'None', (38, 47)) ('RET', 'Gene', '5979', (20, 23)) ('Arg982Cys', 'Var', (51, 60)) ('Gly691Ser', 'Var', (38, 47)) ('RET', 'Gene', (20, 23)) ('Arg982Cys', 'SUBSTITUTION', 'None', (51, 60)) ('patient', 'Species', '9606', (108, 115)) ('MEN2-like', 'Disease', (81, 90)) 44415 27052084 At mean BP 45 mmHg and mean PAP 29 mm of Hg, patient was connected to cardiopulmonary bypass (CPB) with 4 L/min flows without cardioplegia on emergency basis after 3 min following IV injection of 225 mg of heparin. ('cardioplegia', 'Disease', (126, 138)) ('cardioplegia', 'Disease', 'None', (126, 138)) ('heparin', 'Chemical', 'MESH:D006493', (206, 213)) ('patient', 'Species', '9606', (45, 52)) ('PAP', 'Var', (28, 31)) 44429 27052084 CPB can precipitate hypertensive crisis and tachyarrhythmias in these patients. ('patients', 'Species', '9606', (70, 78)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (20, 39)) ('hypertensive', 'Disease', (20, 32)) ('CPB', 'Var', (0, 3)) ('tachyarrhythmias', 'Disease', (44, 60)) ('precipitate', 'Reg', (8, 19)) ('arrhythmia', 'Phenotype', 'HP:0011675', (49, 59)) ('tachyarrhythmias', 'Disease', 'MESH:D013610', (44, 60)) ('hypertensive', 'Disease', 'MESH:D006973', (20, 32)) 44538 26322453 Within the paraganglioma group, resection of glomus vagale led to worse outcomes and, in general, tumors located at the cranial base have poorer outcomes, as would be expected. ('tumors', 'Disease', (98, 104)) ('paraganglioma', 'Disease', 'MESH:D010235', (11, 24)) ('tumors', 'Phenotype', 'HP:0002664', (98, 104)) ('tumors', 'Disease', 'MESH:D009369', (98, 104)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('paraganglioma', 'Phenotype', 'HP:0002668', (11, 24)) ('resection', 'Var', (32, 41)) ('paraganglioma', 'Disease', (11, 24)) ('resection of glomus vagale', 'Phenotype', 'HP:0002886', (32, 58)) ('glomus vagale', 'Phenotype', 'HP:0002886', (45, 58)) 44553 19190077 Mutations of nuclear genes encoding subunits B, C, and D of the mitochondrial enzyme succinate dehydrogenase (SDHB 1p35-p36.1, SDHC 1q21, SDHD 11q23) give rise to hereditary PGL syndromes PGL4, PGL3, and PGL1 respectively. ('SDHC', 'Gene', (127, 131)) ('SDHB', 'Gene', (110, 114)) ('succinate dehydrogenase', 'Gene', '6390', (85, 108)) ('PGL3', 'Gene', '6391', (194, 198)) ('give rise to', 'Reg', (150, 162)) ('SDHC', 'Gene', '6391', (127, 131)) ('PGL3', 'Gene', (194, 198)) ('PGL1', 'Disease', (204, 208)) ('PGL4', 'Gene', '6390', (188, 192)) ('SDHD', 'Gene', '6392', (138, 142)) ('PGL4', 'Gene', (188, 192)) ('hereditary PGL syndromes', 'Disease', (163, 187)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', '6390', (110, 114)) ('SDHD', 'Gene', (138, 142)) ('hereditary PGL syndromes', 'Disease', 'MESH:D010235', (163, 187)) ('succinate dehydrogenase', 'Gene', (85, 108)) 44555 19190077 Mitochondrial dysfunction due to SDHx mutations have been linked to tumorigenesis by upregulation of hypoxic and angiogenesis pathways, apoptosis resistance and developmental culling of neuronal precursor cells. ('tumor', 'Disease', (68, 73)) ('linked', 'Reg', (58, 64)) ('SDHx', 'Chemical', '-', (33, 37)) ('apoptosis resistance', 'CPA', (136, 156)) ('developmental culling of neuronal precursor cells', 'CPA', (161, 210)) ('Mitochondrial dysfunction', 'Disease', (0, 25)) ('Mitochondrial dysfunction', 'Disease', 'MESH:D028361', (0, 25)) ('Mitochondrial dysfunction', 'Phenotype', 'HP:0003287', (0, 25)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('mutations', 'Var', (38, 47)) ('upregulation', 'PosReg', (85, 97)) ('SDHx', 'Gene', (33, 37)) 44557 19190077 SDHB mutations mainly predispose to extra-adrenal, and to a lesser extent, adrenal PGLs, with a high malignant potential, but also head and neck paragangliomas (HNPGL). ('neck paragangliomas', 'Disease', (140, 159)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (131, 159)) ('adrenal PGLs', 'Disease', (75, 87)) ('extra-adrenal', 'Disease', (36, 49)) ('HNPGL', 'Phenotype', 'HP:0002864', (161, 166)) ('mutations', 'Var', (5, 14)) ('predispose', 'Reg', (22, 32)) ('paragangliomas', 'Phenotype', 'HP:0002668', (145, 159)) ('SDHB', 'Gene', '6390', (0, 4)) ('PGLs', 'Phenotype', 'HP:0002668', (83, 87)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (140, 159)) ('paraganglioma', 'Phenotype', 'HP:0002668', (145, 158)) ('SDHB', 'Gene', (0, 4)) 44558 19190077 SDHD mutations are typically associated with multifocal HNPGL and usually benign adrenal and extra-adrenal PGLs. ('HNPGL', 'Phenotype', 'HP:0002864', (56, 61)) ('multifocal', 'Disease', (45, 55)) ('mutations', 'Var', (5, 14)) ('SDHD', 'Gene', '6392', (0, 4)) ('PGLs', 'Phenotype', 'HP:0002668', (107, 111)) ('associated', 'Reg', (29, 39)) ('SDHD', 'Gene', (0, 4)) 44559 19190077 SDHC mutations are a rare cause of mainly HNPGL. ('HNPGL', 'Phenotype', 'HP:0002864', (42, 47)) ('cause', 'Reg', (26, 31)) ('SDHC', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) ('SDHC', 'Gene', '6391', (0, 4)) ('mainly HNPGL', 'Disease', (35, 47)) 44564 19190077 The identification of SDHx mutations in patients with PGL is warranted for a tailor-made approach to the biochemical diagnosis, imaging, treatment, follow-up, and family screening. ('mutations', 'Var', (27, 36)) ('patients', 'Species', '9606', (40, 48)) ('SDHx', 'Chemical', '-', (22, 26)) ('SDHx', 'Gene', (22, 26)) 44575 19190077 An up-to-date overview of all reported SDHx allelic variants that give rise to familial PGL syndromes is available online at http://chromium.liacs.nl/lovd_sdh/. ('SDHx', 'Chemical', '-', (39, 43)) ('SDHx', 'Gene', (39, 43)) ('familial PGL syndromes', 'Disease', 'MESH:D010235', (79, 101)) ('variants', 'Var', (52, 60)) ('sdh', 'Gene', (155, 158)) ('familial PGL syndromes', 'Disease', (79, 101)) ('sdh', 'Gene', '6390', (155, 158)) ('give rise', 'Reg', (66, 75)) 44577 19190077 Within a European-American registry of patients with PGL, the prevalence of underlying SDHx mutations was 10% among 371 patients with apparently sporadic sPGL (6% SDHB, 4% SDHD) and 28% among 121 patients with HNPGL (7% SDHB, 4% SDHC, and 17% SDHD). ('patients', 'Species', '9606', (39, 47)) ('patients', 'Species', '9606', (196, 204)) ('SDHB', 'Gene', '6390', (220, 224)) ('HNPGL', 'Phenotype', 'HP:0002864', (210, 215)) ('SDHC', 'Gene', '6391', (229, 233)) ('SDHB', 'Gene', (220, 224)) ('SDHB', 'Gene', '6390', (163, 167)) ('SDHD', 'Gene', '6392', (243, 247)) ('mutations', 'Var', (92, 101)) ('SDHx', 'Gene', (87, 91)) ('SDHD', 'Gene', '6392', (172, 176)) ('sPGL', 'Chemical', '-', (154, 158)) ('SDHB', 'Gene', (163, 167)) ('SDHD', 'Gene', (243, 247)) ('sPGL', 'Disease', (154, 158)) ('patients', 'Species', '9606', (120, 128)) ('SDHC', 'Gene', (229, 233)) ('SDHx', 'Chemical', '-', (87, 91)) ('SDHD', 'Gene', (172, 176)) 44579 19190077 SDHB mutations mainly predispose to extra-adrenal, and to a lesser extent, adrenal sPGLs, with a high malignant potential. ('PGLs', 'Phenotype', 'HP:0002668', (84, 88)) ('adrenal sPGLs', 'Disease', (75, 88)) ('extra-adrenal', 'Disease', (36, 49)) ('sPGL', 'Chemical', '-', (83, 87)) ('mutations', 'Var', (5, 14)) ('predispose', 'Reg', (22, 32)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) 44580 19190077 SDHD mutations are typically associated with multifocal HNPGL and usually benign adrenal and extra-adrenal sPGL. ('HNPGL', 'Phenotype', 'HP:0002864', (56, 61)) ('multifocal', 'Disease', (45, 55)) ('mutations', 'Var', (5, 14)) ('sPGL', 'Chemical', '-', (107, 111)) ('SDHD', 'Gene', '6392', (0, 4)) ('associated', 'Reg', (29, 39)) ('SDHD', 'Gene', (0, 4)) 44581 19190077 SDHC mutations appear to be a rare cause of mainly HNPGL and sPGL. ('HNPGL', 'Phenotype', 'HP:0002864', (51, 56)) ('SDHC', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) ('SDHC', 'Gene', '6391', (0, 4)) ('sPGL', 'Disease', (61, 65)) ('cause', 'Reg', (35, 40)) ('HNPGL', 'Disease', (51, 56)) ('sPGL', 'Chemical', '-', (61, 65)) 44582 19190077 More recently, germ line SDHB, SDHC, and SDHD mutations have implicated in a new clinical syndrome, the Stratakis-Carney dyad associating gastrointestinal stromal tumor and PGL. ('gastrointestinal stromal tumor', 'Disease', (138, 168)) ('PGL', 'Disease', (173, 176)) ('mutations', 'Var', (46, 55)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (138, 168)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('SDHC', 'Gene', (31, 35)) ('implicated in', 'Reg', (61, 74)) ('SDHD', 'Gene', '6392', (41, 45)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDHB', 'Gene', (25, 29)) ('SDHD', 'Gene', (41, 45)) ('SDHC', 'Gene', '6391', (31, 35)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (138, 168)) 44583 19190077 In this review, distinct clinical expressions associated with mutations in different subunits of the SDHx gene will be discussed, as well as present insights in to optimal strategies for establishing the biochemical diagnosis, tumor localization, and therapy of PGL. ('tumor', 'Disease', (227, 232)) ('tumor', 'Disease', 'MESH:D009369', (227, 232)) ('SDHx', 'Gene', (101, 105)) ('mutations', 'Var', (62, 71)) ('SDHx', 'Chemical', '-', (101, 105)) ('tumor', 'Phenotype', 'HP:0002664', (227, 232)) 44587 19190077 Abnormal SDH function due to mutations of nuclear DNA encoding for one of its subunits results in two completely different phenotypes. ('Abnormal SDH function', 'Disease', 'MESH:D056486', (0, 21)) ('Abnormal SDH function', 'Disease', (0, 21)) ('mutations', 'Var', (29, 38)) ('nuclear DNA', 'Gene', (42, 53)) 44588 19190077 Defects in SDHA cause metabolic neurodenerative disorders like congenital Leigh syndrome and late-onset optic atrophy, ataxia and myopathy, whereas SDHB, SDHC, and SDHD mutations predispose to familial PGL. ('mutations', 'Var', (169, 178)) ('ataxia', 'Disease', (119, 125)) ('ataxia', 'Disease', 'MESH:D001259', (119, 125)) ('SDHC', 'Gene', '6391', (154, 158)) ('SDHA', 'Gene', (11, 15)) ('SDHB', 'Gene', '6390', (148, 152)) ('cause', 'Reg', (16, 21)) ('SDHA', 'Gene', '6389', (11, 15)) ('congenital Leigh syndrome', 'Disease', 'MESH:D007888', (63, 88)) ('optic atrophy', 'Disease', (104, 117)) ('myopathy', 'Disease', 'MESH:D009135', (130, 138)) ('optic atrophy', 'Phenotype', 'HP:0000648', (104, 117)) ('metabolic neurodenerative disorders', 'Disease', (22, 57)) ('SDHB', 'Gene', (148, 152)) ('SDHC', 'Gene', (154, 158)) ('Defects', 'Var', (0, 7)) ('SDHD', 'Gene', '6392', (164, 168)) ('predispose', 'Reg', (179, 189)) ('metabolic neurodenerative disorders', 'Disease', 'MESH:D008659', (22, 57)) ('congenital Leigh syndrome', 'Disease', (63, 88)) ('myopathy', 'Phenotype', 'HP:0003198', (130, 138)) ('ataxia', 'Phenotype', 'HP:0001251', (119, 125)) ('myopathy', 'Disease', (130, 138)) ('SDHD', 'Gene', (164, 168)) ('familial PGL', 'Disease', (193, 205)) ('optic atrophy', 'Disease', 'MESH:D009896', (104, 117)) 44589 19190077 The molecular and cellular mechanisms linking these latter SDHx mutations and tumorigenesis have not been fully elucidated. ('tumor', 'Disease', 'MESH:D009369', (78, 83)) ('SDHx', 'Gene', (59, 63)) ('tumor', 'Phenotype', 'HP:0002664', (78, 83)) ('SDHx', 'Chemical', '-', (59, 63)) ('mutations', 'Var', (64, 73)) ('tumor', 'Disease', (78, 83)) 44590 19190077 Also, the pathophysiology of distinct clinical phenotypes associated with abnormalities in different SDH subunits remains to be unraveled. ('SDH', 'Gene', (101, 104)) ('abnormalities', 'Var', (74, 87)) ('SDH', 'Gene', '6390', (101, 104)) 44591 19190077 Consistent with Knudson's two-hit hypothesis for tumorigenesis involving in a tumor suppressor gene, a heterozygous germ line mutation in an SDHx gene is usually associated with somatic loss of the non-mutant allele in the tumor, i.e., loss of heterozygosity. ('tumor', 'Disease', 'MESH:D009369', (49, 54)) ('tumor', 'Phenotype', 'HP:0002664', (223, 228)) ('tumor', 'Disease', (223, 228)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('tumor', 'Disease', 'MESH:D009369', (78, 83)) ('loss', 'NegReg', (186, 190)) ('mutation', 'Var', (126, 134)) ('tumor', 'Disease', (49, 54)) ('tumor', 'Phenotype', 'HP:0002664', (78, 83)) ('tumor', 'Disease', 'MESH:D009369', (223, 228)) ('tumor', 'Disease', (78, 83)) ('SDHx', 'Chemical', '-', (141, 145)) ('SDHx', 'Gene', (141, 145)) 44593 19190077 Actually, the abnormal SDH function induces an accumulation of succinate. ('SDH', 'Gene', (23, 26)) ('abnormal', 'Var', (14, 22)) ('SDH', 'Gene', '6390', (23, 26)) ('succinate', 'MPA', (63, 72)) ('succinate', 'Chemical', 'MESH:D019802', (63, 72)) ('accumulation', 'PosReg', (47, 59)) 44598 19190077 Apart from a role in the pathogenesis of PGL in patients with germ line mutations, somatic SDHx mutation may also be rarely involved in the development of sporadic PGL. ('SDHx', 'Chemical', '-', (91, 95)) ('SDHx', 'Gene', (91, 95)) ('mutation', 'Var', (96, 104)) ('involved', 'Reg', (124, 132)) ('PGL', 'Disease', (41, 44)) ('patients', 'Species', '9606', (48, 56)) 44601 19190077 Among 84 patients with an apparently sporadic sPGL, eight had an SDHB mutation, 62.5% of them had an extra-adrenal tumor, and 84% had a malignant disease. ('patients', 'Species', '9606', (9, 17)) ('malignant disease', 'Disease', 'MESH:D009369', (136, 153)) ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('malignant disease', 'Disease', (136, 153)) ('extra-adrenal tumor', 'Disease', 'MESH:D010236', (101, 120)) ('sPGL', 'Chemical', '-', (46, 50)) ('extra-adrenal tumor', 'Disease', (101, 120)) ('SDHB', 'Gene', '6390', (65, 69)) ('mutation', 'Var', (70, 78)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (107, 120)) ('SDHB', 'Gene', (65, 69)) 44602 19190077 In this series, in the presence of an SDHB mutation, the odd ratio for an extra-adrenal tumor as primary site was calculated to 19.8 and for a malignant to 19. ('mutation', 'Var', (43, 51)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (80, 93)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('SDHB', 'Gene', '6390', (38, 42)) ('SDHB', 'Gene', (38, 42)) ('extra-adrenal tumor', 'Disease', (74, 93)) ('extra-adrenal tumor', 'Disease', 'MESH:D010236', (74, 93)) 44607 19190077 The mean age at diagnosis of PGL in SDHB mutation carriers in previous series was ~ 30 years. ('mutation', 'Var', (41, 49)) ('SDHB', 'Gene', (36, 40)) ('SDHB', 'Gene', '6390', (36, 40)) 44609 19190077 In the International SDH Consortium population, age-related penetrance (the proportion of gene carriers manifesting the signs or symptoms of the disease by a given age) among SDHB mutation carriers was 29% by age 30 and 45% by age 40. ('SDH', 'Gene', (175, 178)) ('SDH', 'Gene', (21, 24)) ('SDH', 'Gene', '6390', (175, 178)) ('SDHB', 'Gene', '6390', (175, 179)) ('SDHB', 'Gene', (175, 179)) ('SDH', 'Gene', '6390', (21, 24)) ('mutation', 'Var', (180, 188)) ('carriers', 'Reg', (189, 197)) 44612 19190077 Reversely, the prevalence of deleterious SDHB mutations among patients with malignant sPGL is 30%, and even higher (48%) if the tumor originates from an extra-adrenal location. ('tumor', 'Disease', 'MESH:D009369', (128, 133)) ('mutations', 'Var', (46, 55)) ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('patients', 'Species', '9606', (62, 70)) ('SDHB', 'Gene', '6390', (41, 45)) ('sPGL', 'Chemical', '-', (86, 90)) ('tumor', 'Disease', (128, 133)) ('SDHB', 'Gene', (41, 45)) 44615 19190077 An underlying SDHB mutation was shown to be an independent predictor of mortality: in 54 patients with malignant sPGL, the 5-year probability of survival was 36% in SDHB mutation carriers and 67% in the absence of SDHB mutation. ('SDHB', 'Gene', '6390', (214, 218)) ('SDHB', 'Gene', '6390', (165, 169)) ('SDHB', 'Gene', (214, 218)) ('SDHB', 'Gene', '6390', (14, 18)) ('patients', 'Species', '9606', (89, 97)) ('sPGL', 'Chemical', '-', (113, 117)) ('SDHB', 'Gene', (165, 169)) ('SDHB', 'Gene', (14, 18)) ('mutation', 'Var', (170, 178)) 44616 19190077 Median survival after the diagnosis of the first metastasis was 42 months for the SDHB mutation carriers and 244 months for patients with no SDHB mutation. ('patients', 'Species', '9606', (124, 132)) ('SDHB', 'Gene', (141, 145)) ('SDHB', 'Gene', '6390', (82, 86)) ('SDHB', 'Gene', (82, 86)) ('mutation', 'Var', (87, 95)) ('SDHB', 'Gene', '6390', (141, 145)) 44617 19190077 Finally, in multivariate analysis, only the presence of SDHB mutations was significantly and independently associated with survival: the presence of SDHB mutations was associated with an excess mortality (relative risk 2.7). ('SDHB', 'Gene', '6390', (56, 60)) ('SDHB', 'Gene', '6390', (149, 153)) ('SDHB', 'Gene', (56, 60)) ('SDHB', 'Gene', (149, 153)) ('associated', 'Reg', (107, 117)) ('presence', 'Var', (137, 145)) ('mutations', 'Var', (154, 163)) 44620 19190077 Apart from malignant sPGL, SDHB mutations have been suggested to be associated with renal cell carcinomas of early onset. ('sPGL', 'Chemical', '-', (21, 25)) ('associated', 'Reg', (68, 78)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (84, 105)) ('renal cell carcinomas', 'Disease', (84, 105)) ('SDHB', 'Gene', '6390', (27, 31)) ('mutations', 'Var', (32, 41)) ('carcinomas', 'Phenotype', 'HP:0030731', (95, 105)) ('SDHB', 'Gene', (27, 31)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (84, 105)) 44622 19190077 In addition, clinical phenotypes may largely differ between family members with the same SDHB mutation. ('SDHB', 'Gene', (89, 93)) ('SDHB', 'Gene', '6390', (89, 93)) ('mutation', 'Var', (94, 102)) ('differ', 'Reg', (45, 51)) 44623 19190077 In our recent study, features that are associated with aggressive tumor behavior, including young age at presentation, large tumor size, metastatic disease at presentation, and hypersecretion of dopamine were equally distributed among patients with missense versus truncating mutations and were independent of exon locations. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('hypersecretion of dopamine', 'MPA', (177, 203)) ('tumor', 'Disease', 'MESH:D009369', (125, 130)) ('dopamine', 'Chemical', 'MESH:D004298', (195, 203)) ('hypersecretion of dopamine', 'Phenotype', 'HP:0011979', (177, 203)) ('tumor', 'Disease', (66, 71)) ('patients', 'Species', '9606', (235, 243)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('metastatic disease', 'Disease', (137, 155)) ('tumor', 'Disease', (125, 130)) ('aggressive tumor behavior', 'Disease', 'MESH:D001523', (55, 80)) ('missense', 'Var', (249, 257)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) ('aggressive tumor behavior', 'Disease', (55, 80)) 44624 19190077 Identical mutations may result in SDHB-related tumors of variable location and severity. ('tumors', 'Disease', (47, 53)) ('tumors', 'Disease', 'MESH:D009369', (47, 53)) ('result in', 'Reg', (24, 33)) ('SDHB', 'Gene', '6390', (34, 38)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('SDHB', 'Gene', (34, 38)) ('mutations', 'Var', (10, 19)) ('tumors', 'Phenotype', 'HP:0002664', (47, 53)) 44625 19190077 SDHC mutations are mainly associated with the development of HNPGL. ('HNPGL', 'Disease', (61, 66)) ('SDHC', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) ('SDHC', 'Gene', '6391', (0, 4)) ('HNPGL', 'Phenotype', 'HP:0002864', (61, 66)) ('associated with', 'Reg', (26, 41)) 44626 19190077 A limited number of SDHC mutation carriers have been identified worldwide. ('SDHC', 'Gene', '6391', (20, 24)) ('SDHC', 'Gene', (20, 24)) ('mutation', 'Var', (25, 33)) 44627 19190077 Within large population-based international registries, the prevalence of SDHC mutations varied between 0% for patients with sPGL and 4% for patients with HNPGL. ('patients', 'Species', '9606', (141, 149)) ('HNPGL', 'Phenotype', 'HP:0002864', (155, 160)) ('patients', 'Species', '9606', (111, 119)) ('sPGL', 'Chemical', '-', (125, 129)) ('SDHC', 'Gene', (74, 78)) ('sPGL', 'Disease', (125, 129)) ('mutations', 'Var', (79, 88)) ('SDHC', 'Gene', '6391', (74, 78)) 44629 19190077 However, a malignant catecholamine-producing PGL at the carotid bifurcation has been reported in a patient with a IVS5 + 1G > T SDHC mutation. ('patient', 'Species', '9606', (99, 106)) ('1G > T', 'Var', (121, 127)) ('catecholamine', 'Chemical', 'MESH:D002395', (21, 34)) ('IVS5 + 1G > T', 'Mutation', 'c.IVS5+1G>T', (114, 127)) ('SDHC', 'Gene', (128, 132)) ('SDHC', 'Gene', '6391', (128, 132)) ('1G > T', 'SUBSTITUTION', 'None', (121, 127)) 44630 19190077 SDHC mutations were originally believed to be associated only with HNPGL, but recently, adrenal and extra-adrenal sPGL were reported. ('HNPGL', 'Disease', (67, 72)) ('SDHC', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) ('SDHC', 'Gene', '6391', (0, 4)) ('HNPGL', 'Phenotype', 'HP:0002864', (67, 72)) ('associated', 'Reg', (46, 56)) ('sPGL', 'Chemical', '-', (114, 118)) 44631 19190077 SDHD mutations are mainly associated with multifocal HNPGL and benign PGL. ('multifocal HNPGL', 'Disease', (42, 58)) ('benign PGL', 'Disease', (63, 73)) ('mutations', 'Var', (5, 14)) ('SDHD', 'Gene', '6392', (0, 4)) ('HNPGL', 'Phenotype', 'HP:0002864', (53, 58)) ('SDHD', 'Gene', (0, 4)) ('associated', 'Reg', (26, 36)) 44634 19190077 ages at tumor diagnosis were 30.6 years (14.3) in SDHD mutation carriers. ('SDHD', 'Gene', '6392', (50, 54)) ('SDHD', 'Gene', (50, 54)) ('tumor', 'Disease', 'MESH:D009369', (8, 13)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('tumor', 'Disease', (8, 13)) ('mutation', 'Var', (55, 63)) 44635 19190077 The study by the International SDH Consortium showed that by age 40, an estimated 69% of SDHD mutation carriers are diagnosed with HNPGL, whereas by age 60, 35% are diagnosed with sPGL. ('SDH', 'Gene', (89, 92)) ('SDH', 'Gene', '6390', (31, 34)) ('SDH', 'Gene', '6390', (89, 92)) ('diagnosed', 'Reg', (116, 125)) ('HNPGL', 'Phenotype', 'HP:0002864', (131, 136)) ('sPGL', 'Chemical', '-', (180, 184)) ('SDH', 'Gene', (31, 34)) ('SDHD', 'Gene', '6392', (89, 93)) ('HNPGL', 'Disease', (131, 136)) ('SDHD', 'Gene', (89, 93)) ('mutation', 'Var', (94, 102)) 44637 19190077 Among 200 carriers of the well-known Dutch founder SDHD mutation D92Y, there were three patients with metastatic HNPGL and two with metastatic sPGL. ('sPGL', 'Chemical', '-', (143, 147)) ('D92Y', 'Var', (65, 69)) ('patients', 'Species', '9606', (88, 96)) ('D92Y', 'Mutation', 'rs80338845', (65, 69)) ('SDHD', 'Gene', '6392', (51, 55)) ('metastatic HNPGL', 'Disease', (102, 118)) ('SDHD', 'Gene', (51, 55)) ('HNPGL', 'Phenotype', 'HP:0002864', (113, 118)) 44638 19190077 It was argued that SDHD-associated malignancy might be specifically linked to the D92Y mutation and/or gene-environment interactions in the Netherlands. ('linked', 'Reg', (68, 74)) ('SDHD', 'Gene', '6392', (19, 23)) ('D92Y', 'Mutation', 'rs80338845', (82, 86)) ('malignancy', 'Disease', 'MESH:D009369', (35, 45)) ('SDHD', 'Gene', (19, 23)) ('malignancy', 'Disease', (35, 45)) ('D92Y', 'Var', (82, 86)) 44640 19190077 In general, however, both parasympathetic and sPGL in SDHD mutation carriers are rarely malignant. ('SDHD', 'Gene', (54, 58)) ('mutation', 'Var', (59, 67)) ('sPGL', 'Chemical', '-', (46, 50)) ('SDHD', 'Gene', '6392', (54, 58)) 44641 19190077 With respect to genotype-phenotype correlations in SDHD-related tumors, carriers of an nonsense and/or splicing mutation were suggested to develop symptoms at an earlier age than missense-mutation carriers, possibly due to the formation of a truncated protein and failure of the normal function of mitochondrial complex II. ('nonsense and/or', 'Var', (87, 102)) ('tumors', 'Disease', (64, 70)) ('tumors', 'Disease', 'MESH:D009369', (64, 70)) ('tumors', 'Phenotype', 'HP:0002664', (64, 70)) ('symptoms', 'Disease', (147, 155)) ('SDHD', 'Gene', '6392', (51, 55)) ('develop', 'PosReg', (139, 146)) ('SDHD', 'Gene', (51, 55)) ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) 44642 19190077 Also there is a tendency for SDHD mutation carriers of truncating mutations to develop phaeochromocytoma in addition to HNPGL. ('SDHD', 'Gene', '6392', (29, 33)) ('SDHD', 'Gene', (29, 33)) ('develop', 'PosReg', (79, 86)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (87, 104)) ('truncating mutations', 'Var', (55, 75)) ('HNPGL', 'Phenotype', 'HP:0002864', (120, 125)) ('phaeochromocytoma', 'Disease', (87, 104)) 44659 19190077 Furthermore, 111In-pentetreotide scintigraphy, another less specific technique was found to have an excellent sensitivity (> 90%) for HNPGL and may be useful for screening for these tumors in carriers of SDHx gene mutations. ('SDHx', 'Gene', (204, 208)) ('tumors', 'Phenotype', 'HP:0002664', (182, 188)) ('tumors', 'Disease', 'MESH:D009369', (182, 188)) ('tumors', 'Disease', (182, 188)) ('HNPGL', 'Disease', (134, 139)) ('mutations', 'Var', (214, 223)) ('HNPGL', 'Phenotype', 'HP:0002864', (134, 139)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) ('SDHx', 'Chemical', '-', (204, 208)) 44663 19190077 The authors prefer to combine an alpha-adrenoceptor blocking agent (phenoxybenzamine, doxazosin), a beta-adrenoceptor blocking agent (propranolol, atenolol), and alpha-methyl-paratyrosine, an inhibitor of catecholamine synthesis. ('atenolol', 'Chemical', 'MESH:D001262', (147, 155)) ('alpha-methyl-paratyrosine', 'Chemical', 'MESH:D019805', (162, 187)) ('alpha-adrenoceptor', 'MPA', (33, 51)) ('doxazosin', 'Chemical', 'MESH:D017292', (86, 95)) ('phenoxybenzamine', 'Var', (68, 84)) ('propranolol', 'Chemical', 'MESH:D011433', (134, 145)) ('catecholamine', 'Chemical', 'MESH:D002395', (205, 218)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (68, 84)) 44669 19190077 Treatment with therapeutic doses of 131I-MIBG or combination chemotherapy (cyclophosphamide, vincristine, and darcabazine) may induce (partial) responses. ('induce', 'Reg', (127, 133)) ('131I-MIBG', 'Var', (36, 45)) ('darcabazine', 'Chemical', '-', (110, 121)) ('vincristine', 'Chemical', 'MESH:D014750', (93, 104)) ('cyclophosphamide', 'Chemical', 'MESH:D003520', (75, 91)) ('131I-MIBG', 'Chemical', '-', (36, 45)) 44671 19190077 Symptomatic treatment by decreasing catecholamine burden can be obtained with alpha-adrenergic blockers and alpha-methyl-paratyrosine. ('decreasing catecholamine burden', 'Phenotype', 'HP:0045012', (25, 56)) ('catecholamine burden', 'MPA', (36, 56)) ('alpha-methyl-paratyrosine', 'Chemical', 'MESH:D019805', (108, 133)) ('alpha-methyl-paratyrosine', 'Var', (108, 133)) ('decreasing', 'NegReg', (25, 35)) ('catecholamine', 'Chemical', 'MESH:D002395', (36, 49)) 44676 19190077 Furthermore, SDHD-related disease is characterized by maternal genomic imprinting: individuals who inherit a mutation from mother remain free of PGL, but may still pass on the mutation to their offspring. ('SDHD', 'Gene', (13, 17)) ('SDHD', 'Gene', '6392', (13, 17)) ('mutation', 'Var', (109, 117)) 44679 19190077 These observations indicate that a negative family history by no means rules out an underlying SDH mutation. ('SDH', 'Gene', '6390', (95, 98)) ('SDH', 'Gene', (95, 98)) ('mutation', 'Var', (99, 107)) 44680 19190077 Reversely, among patients with apparently sporadic sPGL, the prevalences of SDHB and SDHD mutations are 4-7% and 1-4% respectively. ('SDHB', 'Gene', '6390', (76, 80)) ('mutations', 'Var', (90, 99)) ('SDHB', 'Gene', (76, 80)) ('sPGL', 'Chemical', '-', (51, 55)) ('SDHD', 'Gene', '6392', (85, 89)) ('patients', 'Species', '9606', (17, 25)) ('SDHD', 'Gene', (85, 89)) 44686 19190077 Asymptomatic carriers of an SDHx-mutation among the relatives of affected patients may benefit from tumor screening for early detection of PGL, because the chances of post-operative morbidity and metastatic spread rise with increasing tumor size. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('tumor', 'Disease', 'MESH:D009369', (235, 240)) ('SDHx-mutation', 'Var', (28, 41)) ('tumor', 'Disease', (100, 105)) ('patients', 'Species', '9606', (74, 82)) ('tumor', 'Phenotype', 'HP:0002664', (235, 240)) ('tumor', 'Disease', (235, 240)) ('SDHx-mutation', 'Gene', (28, 41)) ('metastatic spread', 'CPA', (196, 213)) ('SDHx', 'Chemical', '-', (28, 32)) ('tumor', 'Disease', 'MESH:D009369', (100, 105)) 44691 19190077 The only exceptions are the children of female SDHD mutation carriers, who do not require clinical surveillance because of maternal imprinting. ('children', 'Species', '9606', (28, 36)) ('SDHD', 'Gene', (47, 51)) ('SDHD', 'Gene', '6392', (47, 51)) ('mutation', 'Var', (52, 60)) 44693 19190077 In case of SDHB mutation carriership, we recommend to commence investigations as early as before the age of 10. ('SDHB', 'Gene', (11, 15)) ('carriership', 'Reg', (25, 36)) ('mutation', 'Var', (16, 24)) ('SDHB', 'Gene', '6390', (11, 15)) 44707 23404627 Fostamatinib (R935788; NSC 745942) is a potent, oral prodrug that is rapidly and extensively converted to the active moiety R406 by alkaline phosphatases in the intestinal mucosa. ('alkaline phosphatase', 'Gene', '250', (132, 152)) ('R935788;', 'Var', (14, 22)) ('Fostamatinib', 'Chemical', 'MESH:C523665', (0, 12)) ('alkaline phosphatases', 'Phenotype', 'HP:0003155', (132, 153)) ('alkaline phosphatase', 'Gene', (132, 152)) 44708 23404627 R406 (NSC 742317) is a kinase inhibitor with relative selectivity for spleen tyrosine kinase (Syk) but also inhibits other kinases of particular interest as therapeutic targets in oncology including Flt3, aurora A kinase, and RET. ('Flt3', 'Gene', (199, 203)) ('Syk', 'Gene', '6850', (94, 97)) ('aurora A kinase', 'Enzyme', (205, 220)) ('inhibits', 'NegReg', (108, 116)) ('Syk', 'Gene', (94, 97)) ('Flt3', 'Gene', '2322', (199, 203)) ('RET', 'Gene', (226, 229)) ('R406', 'Var', (0, 4)) ('RET', 'Gene', '5979', (226, 229)) ('oncology', 'Phenotype', 'HP:0002664', (180, 188)) 44709 23404627 Fostamatinib and R406 have also been shown to decrease vascular endothelial growth factor (VEGF) expression and angiogenesis. ('VEGF', 'Gene', '7422', (91, 95)) ('angiogenesis', 'CPA', (112, 124)) ('R406', 'Var', (17, 21)) ('Fostamatinib', 'Chemical', 'MESH:C523665', (0, 12)) ('VEGF', 'Gene', (91, 95)) ('vascular endothelial growth factor', 'Gene', (55, 89)) ('decrease', 'NegReg', (46, 54)) ('expression', 'MPA', (97, 107)) ('vascular endothelial growth factor', 'Gene', '7422', (55, 89)) 44710 23404627 R406 showed selective sensitivity in the National Cancer Institute (NCI) 60-cell line screen, with highest sensitivity against the renal carcinoma cell lines with EC50 equivalent to 0.15 muM, and reduced tumor burden in renal tumor xenografts at doses not associated with appreciable toxicities. ('tumor', 'Disease', 'MESH:D009369', (204, 209)) ('renal carcinoma', 'Disease', 'MESH:C538614', (131, 146)) ('tumor', 'Disease', 'MESH:D009369', (226, 231)) ('R406', 'Var', (0, 4)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (131, 146)) ('renal carcinoma', 'Disease', (131, 146)) ('Cancer', 'Phenotype', 'HP:0002664', (50, 56)) ('tumor', 'Phenotype', 'HP:0002664', (204, 209)) ('tumor', 'Phenotype', 'HP:0002664', (226, 231)) ('Cancer', 'Disease', (50, 56)) ('renal tumor', 'Disease', 'MESH:D007674', (220, 231)) ('renal tumor', 'Phenotype', 'HP:0009726', (220, 231)) ('renal tumor', 'Disease', (220, 231)) ('toxicities', 'Disease', 'MESH:D064420', (284, 294)) ('reduced', 'NegReg', (196, 203)) ('Cancer', 'Disease', 'MESH:D009369', (50, 56)) ('toxicities', 'Disease', (284, 294)) ('tumor', 'Disease', (204, 209)) ('carcinoma', 'Phenotype', 'HP:0030731', (137, 146)) ('tumor', 'Disease', (226, 231)) 44711 23404627 R406 also showed activity against some colon and non-small cell lung cancer (NSCLC) lines. ('NSCLC', 'Disease', 'MESH:D002289', (77, 82)) ('lung cancer', 'Phenotype', 'HP:0100526', (64, 75)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (53, 75)) ('non-small cell lung cancer', 'Phenotype', 'HP:0030358', (49, 75)) ('cancer', 'Phenotype', 'HP:0002664', (69, 75)) ('R406', 'Var', (0, 4)) ('non-small cell lung cancer', 'Disease', 'MESH:D002289', (49, 75)) ('activity', 'MPA', (17, 25)) ('NSCLC', 'Disease', (77, 82)) ('colon', 'Disease', (39, 44)) ('non-small cell lung cancer', 'Disease', (49, 75)) 44720 23404627 Other inclusion criteria included: measurable disease per Response Evaluation Criteria in Solid Tumors (RECIST 1.0); Eastern Cooperative Oncology Group (ECOG) performance status <= 2; life expectancy >= 3 months; adequate marrow, hepatic and renal function defined as absolute neutrophil count >= 1.5 x 109/L, platelets >= 100 x 109/L, total bilirubin <= 1.5 x upper limit of normal (ULN), aspartate aminotransferase (AST) and alanine aminotransferase (ALT) <= 2.5 x ULN and creatinine < 1.5 x ULN or a creatinine clearance >= 60 mL/min/1.73 m2 for patients with creatinine levels >= 1.5 x ULN. ('creatinine clearance', 'MPA', (503, 523)) ('alanine aminotransferase', 'Gene', '2875', (427, 451)) ('creatinine', 'MPA', (475, 485)) ('bilirubin', 'Chemical', 'MESH:D001663', (342, 351)) ('AST', 'Gene', '26503', (418, 421)) ('Oncology', 'Phenotype', 'HP:0002664', (137, 145)) ('aspartate aminotransferase', 'Gene', '26503', (390, 416)) ('>= 100 x 109/L', 'Var', (320, 334)) ('aspartate aminotransferase', 'Gene', (390, 416)) ('patients', 'Species', '9606', (549, 557)) ('Tumors', 'Phenotype', 'HP:0002664', (96, 102)) ('AST', 'Gene', (418, 421)) ('Solid Tumors', 'Disease', 'MESH:D009369', (90, 102)) ('alanine aminotransferase', 'Gene', (427, 451)) ('Solid Tumors', 'Disease', (90, 102)) 44948 24628963 Ancillary studies evaluated hypertension, proteinuria, and vascular endothelial growth factor (VEGF) polymorphisms in predicting progression-free survival (PFS) and the predictive role of serum vitamin D in progression-free survival and proteinuria onset. ('proteinuria', 'Disease', (42, 53)) ('VEGF', 'Gene', '7422', (95, 99)) ('progression-free', 'Disease', (129, 145)) ('proteinuria', 'Phenotype', 'HP:0000093', (237, 248)) ('proteinuria', 'Disease', 'MESH:D011507', (237, 248)) ('proteinuria', 'Phenotype', 'HP:0000093', (42, 53)) ('vascular endothelial growth factor', 'Gene', (59, 93)) ('hypertension', 'Disease', 'MESH:D006973', (28, 40)) ('proteinuria', 'Disease', 'MESH:D011507', (42, 53)) ('vitamin D', 'Chemical', 'MESH:D014807', (194, 203)) ('hypertension', 'Disease', (28, 40)) ('vascular endothelial growth factor', 'Gene', '7422', (59, 93)) ('VEGF', 'Gene', (95, 99)) ('hypertension', 'Phenotype', 'HP:0000822', (28, 40)) ('polymorphisms', 'Var', (101, 114)) ('proteinuria', 'Disease', (237, 248)) 44956 24628963 VEGF polymorphisms were not associated with patient outcome. ('VEGF', 'Gene', '7422', (0, 4)) ('patient', 'Species', '9606', (44, 51)) ('VEGF', 'Gene', (0, 4)) ('polymorphisms', 'Var', (5, 18)) 44969 24628963 In addition, VEGF polymorphisms have been found to be predictive of hypertension and associated with time to progression in advanced breast cancer treated with bevacizumab. ('VEGF', 'Gene', '7422', (13, 17)) ('hypertension', 'Disease', 'MESH:D006973', (68, 80)) ('breast cancer', 'Disease', (133, 146)) ('breast cancer', 'Phenotype', 'HP:0003002', (133, 146)) ('bevacizumab', 'Chemical', 'MESH:D000068258', (160, 171)) ('hypertension', 'Disease', (68, 80)) ('hypertension', 'Phenotype', 'HP:0000822', (68, 80)) ('VEGF', 'Gene', (13, 17)) ('polymorphisms', 'Var', (18, 31)) ('cancer', 'Phenotype', 'HP:0002664', (140, 146)) ('breast cancer', 'Disease', 'MESH:D001943', (133, 146)) ('associated', 'Reg', (85, 95)) 44980 24628963 In predefined ancillary studies we also explored the role of circulating VEGF, VEGF polymorphisms, vitamin D status, and vitamin D metabolism-related polymorphism in predicting toxicities and treatment efficacy. ('vitamin D', 'Chemical', 'MESH:D014807', (121, 130)) ('vitamin D', 'Chemical', 'MESH:D014807', (99, 108)) ('toxicities', 'Disease', 'MESH:D064420', (177, 187)) ('VEGF', 'Gene', '7422', (79, 83)) ('toxicities', 'Disease', (177, 187)) ('VEGF', 'Gene', '7422', (73, 77)) ('polymorphism', 'Var', (150, 162)) ('VEGF', 'Gene', (73, 77)) ('VEGF', 'Gene', (79, 83)) ('polymorphisms', 'Var', (84, 97)) 44981 24628963 Eligibility criteria for inclusion in this trial were: histologically or cytologically proven diagnosis of WMD-NEN; metastatic or inoperable disease not previously treated with chemotherapy; age >=18 years; progressive disease as documented by Response Evaluation Criteria in Solid Tumors (RECIST); Eastern Cooperative Oncology Group (ECOG) performance status 0-2; life expectancy of at least 12 weeks; measurable and/or evaluable lesions according to RECIST; adequate bone marrow reserve (neutrophils >=1500/mm3 and platelets >=80,000/mm3); hemoglobin >=9.0 g/dl; total bilirubin <=1.5 times the upper limit of normal; prothrombin time-international normalized ratio/partial thromboplastin time (PT-INR/PTT) <1.5 times the upper limit of normal; serum creatinine <=1.5 times the upper limit of normal; potential; ability to comply with the protocol procedures. ('Solid Tumors', 'Disease', 'MESH:D009369', (276, 288)) ('Solid Tumors', 'Disease', (276, 288)) ('bone marrow reserve', 'CPA', (469, 488)) ('Tumor', 'Phenotype', 'HP:0002664', (282, 287)) ('Tumors', 'Phenotype', 'HP:0002664', (282, 288)) ('serum creatinine', 'MPA', (747, 763)) ('partial thromboplastin time', 'Phenotype', 'HP:0003645', (668, 695)) ('Oncology', 'Phenotype', 'HP:0002664', (319, 327)) ('<=1.5', 'Var', (581, 586)) 44988 24628963 Plasma samples were obtained from patients who consented to having optional blood draws for analysis of VEGF (kit) and VEGF polymorphisms, circulating vitamin D (25-OH colecalcipherol) and vitamin D polymorphism. ('VEGF', 'Gene', '7422', (119, 123)) ('vitamin D', 'Chemical', 'MESH:D014807', (189, 198)) ('vitamin D', 'Chemical', 'MESH:D014807', (151, 160)) ('25-OH colecalcipherol', 'Chemical', '-', (162, 183)) ('VEGF', 'Gene', '7422', (104, 108)) ('VEGF', 'Gene', (119, 123)) ('polymorphisms', 'Var', (124, 137)) ('patients', 'Species', '9606', (34, 42)) ('VEGF', 'Gene', (104, 108)) 44989 24628963 Vitamin D polymorphism (rs4646536) and VEGF polymorphisms (rs699947 and rs1570360) were assessed using the ABI TaqMan allelic discrimination kit by real-time PCR with standard methodology. ('rs1570360', 'Var', (72, 81)) ('rs1570360', 'Mutation', 'rs1570360', (72, 81)) ('rs4646536', 'Var', (24, 33)) ('rs699947', 'Var', (59, 67)) ('VEGF', 'Gene', (39, 43)) ('rs4646536', 'Mutation', 'rs4646536', (24, 33)) ('Vitamin D', 'Chemical', 'MESH:D014807', (0, 9)) ('VEGF', 'Gene', '7422', (39, 43)) ('rs699947', 'Mutation', 'rs699947', (59, 67)) 44999 24628963 The capecitabine dose was modified as follows: delayed for 1 week if granulocyte counts were <1.5 x 109/L and/or platelet counts were <100 x 109/L; interrupted until improvement to grade 0-1 in the event of hand and foot syndrome or severe palmar-plantar erythema with blistering and desquamation; discontinued for 1 week in case of persistent diarrhea, otherwise antidiarrheal agents were prescribed for grade 1 or 2 diarrhea; stopped for 1 week in case of grade 2 mucositis; interrupted until recovery in the event of grade 3 or 4 mucositis, then restarted at a 25% reduction in dosage. ('diarrhea', 'Disease', (418, 426)) ('palmar-plantar erythema', 'Phenotype', 'HP:0025493', (240, 263)) ('diarrhea', 'Phenotype', 'HP:0002014', (344, 352)) ('diarrhea', 'Phenotype', 'HP:0002014', (368, 376)) ('mucositis', 'Disease', 'MESH:D052016', (466, 475)) ('foot syndrome', 'Disease', (216, 229)) ('diarrhea', 'Disease', 'MESH:D003967', (418, 426)) ('mucositis', 'Disease', (466, 475)) ('diarrhea', 'Disease', (344, 352)) ('diarrhea', 'Disease', (368, 376)) ('palmar-plantar erythema', 'Disease', 'MESH:C565041', (240, 263)) ('mucositis', 'Disease', 'MESH:D052016', (533, 542)) ('blistering and desquamation', 'Phenotype', 'HP:0008066', (269, 296)) ('diarrhea', 'Disease', 'MESH:D003967', (368, 376)) ('erythema', 'Phenotype', 'HP:0010783', (255, 263)) ('diarrhea', 'Disease', 'MESH:D003967', (344, 352)) ('desquamation', 'Phenotype', 'HP:0040189', (284, 296)) ('palmar-plantar erythema', 'Disease', (240, 263)) ('mucositis', 'Disease', (533, 542)) ('diarrhea', 'Phenotype', 'HP:0002014', (418, 426)) ('capecitabine', 'Chemical', 'MESH:D000069287', (4, 16)) ('foot syndrome', 'Disease', 'MESH:D005534', (216, 229)) ('<100 x 109/L', 'Var', (134, 146)) ('persistent diarrhea', 'Phenotype', 'HP:0002028', (333, 352)) 45000 24628963 Pretreatment and on-study evaluations included: history; physical examination; laboratory tests; and analysis of tumor markers (chromogranin A), serum VEGF, VEGF polymorphism, vitamin D, vitamin D polymorphism. ('tumor', 'Disease', (113, 118)) ('VEGF', 'Gene', '7422', (151, 155)) ('VEGF', 'Gene', '7422', (157, 161)) ('vitamin D', 'Chemical', 'MESH:D014807', (176, 185)) ('chromogranin A', 'Gene', (128, 142)) ('polymorphism', 'Var', (162, 174)) ('vitamin D', 'Chemical', 'MESH:D014807', (187, 196)) ('tumor', 'Disease', 'MESH:D009369', (113, 118)) ('VEGF', 'Gene', (151, 155)) ('VEGF', 'Gene', (157, 161)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('chromogranin A', 'Gene', '1113', (128, 142)) 45041 24628963 There was a non significant association between rs699947 polymorphism and hypertension: hypertension was present in7/10 patients (70.0%) with CC genotype and in 7/18 patients (38.9%) with CA/AA genotype (p = 0.11). ('hypertension', 'Disease', (74, 86)) ('rs699947', 'Var', (48, 56)) ('hypertension', 'Disease', (88, 100)) ('hypertension', 'Phenotype', 'HP:0000822', (88, 100)) ('hypertension', 'Phenotype', 'HP:0000822', (74, 86)) ('patients', 'Species', '9606', (166, 174)) ('patients', 'Species', '9606', (120, 128)) ('hypertension', 'Disease', 'MESH:D006973', (74, 86)) ('hypertension', 'Disease', 'MESH:D006973', (88, 100)) ('rs699947', 'Mutation', 'rs699947', (48, 56)) 45042 24628963 No association was found between rs699947 polymorphism and proteinuria. ('proteinuria', 'Phenotype', 'HP:0000093', (59, 70)) ('proteinuria', 'Disease', (59, 70)) ('proteinuria', 'Disease', 'MESH:D011507', (59, 70)) ('rs699947', 'Mutation', 'rs699947', (33, 41)) ('rs699947', 'Var', (33, 41)) 45043 24628963 No association between rs1570360 polymorphism and either hypertension or proteinuria was observed. ('hypertension', 'Disease', 'MESH:D006973', (57, 69)) ('proteinuria', 'Disease', (73, 84)) ('hypertension', 'Disease', (57, 69)) ('proteinuria', 'Phenotype', 'HP:0000093', (73, 84)) ('rs1570360', 'Mutation', 'rs1570360', (23, 32)) ('hypertension', 'Phenotype', 'HP:0000822', (57, 69)) ('proteinuria', 'Disease', 'MESH:D011507', (73, 84)) ('rs1570360', 'Var', (23, 32)) 45044 24628963 Rs699947 and rs1570360 polymorphisms both failed to be associated with progression-free survival (data not shown). ('Rs699947', 'Var', (0, 8)) ('Rs699947', 'Mutation', 'Rs699947', (0, 8)) ('rs1570360', 'Mutation', 'rs1570360', (13, 22)) ('rs1570360', 'Var', (13, 22)) 45048 24628963 Vitamin D polymorphism failed to be associated with hypertension, proteinuria, and PFS (data not shown). ('proteinuria', 'Disease', (66, 77)) ('proteinuria', 'Phenotype', 'HP:0000093', (66, 77)) ('PFS', 'Disease', (83, 86)) ('polymorphism', 'Var', (10, 22)) ('Vitamin D', 'Gene', (0, 9)) ('proteinuria', 'Disease', 'MESH:D011507', (66, 77)) ('hypertension', 'Disease', 'MESH:D006973', (52, 64)) ('hypertension', 'Disease', (52, 64)) ('associated', 'Reg', (36, 46)) ('hypertension', 'Phenotype', 'HP:0000822', (52, 64)) ('Vitamin D', 'Chemical', 'MESH:D014807', (0, 9)) 45057 24628963 Hypertension, a common side effect of bevacizumab linked to VEGF inhibition, is associated with a greater efficacy of this monoclonal antibody, and VEGF polymorphisms, which are predictive of bevacizumab-induced hypertension, are also correlated with the drug's efficacy. ('VEGF', 'Gene', '7422', (60, 64)) ('inhibition', 'NegReg', (65, 75)) ('VEGF', 'Gene', (148, 152)) ('hypertension', 'Disease', 'MESH:D006973', (212, 224)) ('VEGF', 'Gene', (60, 64)) ('hypertension', 'Disease', (212, 224)) ('Hypertension', 'Phenotype', 'HP:0000822', (0, 12)) ('VEGF', 'Gene', '7422', (148, 152)) ('hypertension', 'Phenotype', 'HP:0000822', (212, 224)) ('Hypertension', 'Disease', 'MESH:D006973', (0, 12)) ('efficacy', 'MPA', (106, 114)) ('bevacizumab', 'Chemical', 'MESH:D000068258', (38, 49)) ('bevacizumab', 'Chemical', 'MESH:D000068258', (192, 203)) ('greater', 'PosReg', (98, 105)) ('Hypertension', 'Disease', (0, 12)) ('polymorphisms', 'Var', (153, 166)) 45078 23355199 Only 2.7% of 1,140 carcinomas from various sites exhibited cathepsin K labeling, thus suggesting that among carcinomas, cathepsin K labeling is highly specific for translocation RCC. ('cathepsin K', 'Gene', (120, 131)) ('carcinoma', 'Phenotype', 'HP:0030731', (108, 117)) ('translocation', 'Var', (164, 177)) ('cathepsin K', 'Gene', (59, 70)) ('cathepsin K', 'Gene', '1513', (59, 70)) ('cathepsin K', 'Gene', '1513', (120, 131)) ('carcinoma', 'Phenotype', 'HP:0030731', (19, 28)) ('carcinomas', 'Phenotype', 'HP:0030731', (108, 118)) ('carcinomas', 'Disease', (108, 118)) ('carcinomas', 'Disease', 'MESH:D002277', (108, 118)) ('RCC', 'Disease', 'MESH:C538614', (178, 181)) ('RCC', 'Disease', (178, 181)) ('RCC', 'Phenotype', 'HP:0005584', (178, 181)) ('carcinomas', 'Phenotype', 'HP:0030731', (19, 29)) ('carcinomas', 'Disease', (19, 29)) ('carcinomas', 'Disease', 'MESH:D002277', (19, 29)) 45081 23355199 Germline mutations in the cathepsin K gene underlie the sclerosing bone disorder pycnodysostosis. ('Germline mutations', 'Var', (0, 18)) ('bone disorder pycnodysostosis', 'Disease', 'MESH:D058631', (67, 96)) ('bone disorder pycnodysostosis', 'Disease', (67, 96)) ('underlie', 'Reg', (43, 51)) ('cathepsin K', 'Gene', (26, 37)) ('cathepsin K', 'Gene', '1513', (26, 37)) 45086 23355199 Among them, TFE3 and TFEB are implicated in gene fusions resulting from chromosome translocations in a subset of renal cell carcinoma (RCC), including the Xp11 translocation RCC and the t(6;11)(p21;q12) RCC. ('p11', 'Gene', '6281', (156, 159)) ('TFE3', 'Gene', (12, 16)) ('RCC', 'Disease', 'MESH:C538614', (135, 138)) ('t(6;11)(p21;q12)', 'STRUCTURAL_ABNORMALITY', 'None', (186, 202)) ('TFEB', 'Gene', (21, 25)) ('TFE3', 'Gene', '7030', (12, 16)) ('p11', 'Gene', (156, 159)) ('RCC', 'Disease', (203, 206)) ('RCC', 'Phenotype', 'HP:0005584', (203, 206)) ('renal cell carcinoma', 'Disease', (113, 133)) ('TFEB', 'Gene', '7942', (21, 25)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (113, 133)) ('RCC', 'Disease', 'MESH:C538614', (203, 206)) ('t(6;11)(p21;q12', 'Var', (186, 201)) ('resulting', 'Reg', (57, 66)) ('RCC', 'Disease', (174, 177)) ('RCC', 'Phenotype', 'HP:0005584', (174, 177)) ('RCC', 'Phenotype', 'HP:0005584', (135, 138)) ('carcinoma', 'Phenotype', 'HP:0030731', (124, 133)) ('RCC', 'Disease', (135, 138)) ('implicated', 'Reg', (30, 40)) ('RCC', 'Disease', 'MESH:C538614', (174, 177)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (113, 133)) 45119 23355199 This suggests that cathepsin K can be helpful in distinguishing translocation RCCs from other carcinomas, and that positive labeling for cathepsin K in an epithelial neoplasm is highly suggestive of an MiTF family- related carcinoma. ('carcinoma', 'Disease', 'MESH:D002277', (94, 103)) ('carcinomas', 'Disease', (94, 104)) ('RCC', 'Disease', 'MESH:C538614', (78, 81)) ('carcinoma', 'Phenotype', 'HP:0030731', (223, 232)) ('carcinoma', 'Disease', (223, 232)) ('epithelial neoplasm', 'Disease', (155, 174)) ('RCCs', 'Phenotype', 'HP:0005584', (78, 82)) ('epithelial neoplasm', 'Phenotype', 'HP:0031492', (155, 174)) ('epithelial neoplasm', 'Disease', 'MESH:D002277', (155, 174)) ('carcinoma', 'Phenotype', 'HP:0030731', (94, 103)) ('carcinomas', 'Phenotype', 'HP:0030731', (94, 104)) ('carcinomas', 'Disease', 'MESH:D002277', (94, 104)) ('carcinoma', 'Disease', (94, 103)) ('MiTF', 'Gene', '4286', (202, 206)) ('cathepsin K', 'Gene', (19, 30)) ('translocation', 'Var', (64, 77)) ('carcinoma', 'Disease', 'MESH:D002277', (223, 232)) ('cathepsin K', 'Gene', '1513', (19, 30)) ('cathepsin K', 'Gene', (137, 148)) ('cathepsin K', 'Gene', '1513', (137, 148)) ('neoplasm', 'Phenotype', 'HP:0002664', (166, 174)) ('MiTF', 'Gene', (202, 206)) ('RCC', 'Disease', (78, 81)) ('RCC', 'Phenotype', 'HP:0005584', (78, 81)) 45127 23355199 For example, the ASPL-TFE3 gene fusion is present in both ASPS and a subset of translocation RCCs; however, in contrast to consistent diffuse cathepsin K positivity of ASPS, ASPL-TFE3 translocation RCCs are almost always negative for cathepsin K. Along these lines, clear cell sarcoma harbors a unique chromosome translocation t(12;22)(q13;q13), causing fusion of the Ewing sarcoma- associated gene (EWS) to the activity transcription factor 1 (ATF1) gene. ('ASPS', 'Gene', (168, 172)) ('RCC', 'Phenotype', 'HP:0005584', (93, 96)) ('activity transcription factor 1', 'Gene', '466', (412, 443)) ('RCC', 'Disease', (93, 96)) ('ASPL', 'Gene', '79058', (174, 178)) ('cathepsin K', 'Gene', (142, 153)) ('RCC', 'Disease', 'MESH:C538614', (198, 201)) ('EWS', 'Gene', (400, 403)) ('ASPS', 'Gene', '79058', (58, 62)) ('ASPL', 'Gene', (17, 21)) ('cathepsin K', 'Gene', '1513', (142, 153)) ('fusion', 'Var', (354, 360)) ('ASPS', 'Phenotype', 'HP:0012218', (58, 62)) ('ATF1', 'Gene', '466', (445, 449)) ('RCC', 'Disease', 'MESH:C538614', (93, 96)) ('clear cell sarcoma', 'Disease', (266, 284)) ('Ewing sarcoma- associated gene', 'Gene', '2130', (368, 398)) ('sarcoma', 'Phenotype', 'HP:0100242', (374, 381)) ('t(12;22)(q13;q13)', 'STRUCTURAL_ABNORMALITY', 'None', (327, 344)) ('ASPS', 'Gene', '79058', (168, 172)) ('RCCs', 'Phenotype', 'HP:0005584', (198, 202)) ('activity transcription factor 1', 'Gene', (412, 443)) ('ASPS', 'Phenotype', 'HP:0012218', (168, 172)) ('sarcoma', 'Phenotype', 'HP:0100242', (277, 284)) ('Ewing sarcoma- associated gene', 'Gene', (368, 398)) ('causing', 'Reg', (346, 353)) ('ASPL', 'Gene', '79058', (17, 21)) ('cathepsin K', 'Gene', (234, 245)) ('RCCs', 'Phenotype', 'HP:0005584', (93, 97)) ('cathepsin K', 'Gene', '1513', (234, 245)) ('EWS', 'Gene', '2130', (400, 403)) ('ASPL', 'Gene', (174, 178)) ('Ewing sarcoma', 'Phenotype', 'HP:0012254', (368, 381)) ('ASPS', 'Gene', (58, 62)) ('TFE3', 'Gene', (22, 26)) ('TFE3', 'Gene', (179, 183)) ('RCC', 'Disease', (198, 201)) ('RCC', 'Phenotype', 'HP:0005584', (198, 201)) ('ATF1', 'Gene', (445, 449)) ('clear cell sarcoma', 'Disease', 'MESH:D018227', (266, 284)) ('TFE3', 'Gene', '7030', (22, 26)) ('TFE3', 'Gene', '7030', (179, 183)) 45210 22270996 Prevalence of Germline Mutations in Patients with Pheochromocytoma or Abdominal Paraganglioma and Sporadic Presentation: A Population-Based Study in Western Sweden Germline mutations in the susceptibility genes RET, SDHB, SDHD, and VHL have been reported in 7.5-24% of patients with pheochromocytoma (Pheo) or paraganglioma (PGL) and sporadic presentation. ('RET', 'Gene', (211, 214)) ('PGL', 'Phenotype', 'HP:0002668', (325, 328)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (283, 299)) ('paraganglioma', 'Phenotype', 'HP:0002668', (310, 323)) ('VHL', 'Disease', (232, 235)) ('patients', 'Species', '9606', (269, 277)) ('SDHD', 'Gene', '6392', (222, 226)) ('pheochromocytoma', 'Disease', (283, 299)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (50, 66)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (283, 299)) ('Pheo', 'Phenotype', 'HP:0002666', (50, 54)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (80, 93)) ('Pheochromocytoma or Abdominal Paraganglioma', 'Disease', (50, 93)) ('mutations', 'Var', (173, 182)) ('SDHD', 'Gene', (222, 226)) ('SDHB', 'Gene', '6390', (216, 220)) ('RET', 'Gene', '5979', (211, 214)) ('VHL', 'Disease', 'MESH:D006623', (232, 235)) ('paraganglioma', 'Disease', (310, 323)) ('Patients', 'Species', '9606', (36, 44)) ('paraganglioma', 'Disease', 'MESH:D010235', (310, 323)) ('Pheochromocytoma or Abdominal Paraganglioma', 'Disease', 'MESH:D010673', (50, 93)) ('Pheo', 'Phenotype', 'HP:0002666', (301, 305)) ('SDHB', 'Gene', (216, 220)) 45215 22270996 Germline mutations were investigated by using direct sequencing for point mutations in RET, SDHB, SDHD, and VHL, and multiplex ligation-dependent probe amplification for gross deletions in SDHB, SDHC, SDHD, and VHL. ('SDHD', 'Gene', (201, 205)) ('SDHD', 'Gene', '6392', (201, 205)) ('SDHC', 'Gene', (195, 199)) ('point mutations', 'Var', (68, 83)) ('SDHB', 'Gene', '6390', (92, 96)) ('SDHC', 'Gene', '6391', (195, 199)) ('RET', 'Gene', '5979', (87, 90)) ('SDHD', 'Gene', '6392', (98, 102)) ('SDHB', 'Gene', (92, 96)) ('VHL', 'Disease', (108, 111)) ('SDHD', 'Gene', (98, 102)) ('VHL', 'Disease', 'MESH:D006623', (108, 111)) ('RET', 'Gene', (87, 90)) ('SDHB', 'Gene', '6390', (189, 193)) ('VHL', 'Disease', 'MESH:D006623', (211, 214)) ('SDHB', 'Gene', (189, 193)) ('VHL', 'Disease', (211, 214)) 45217 22270996 Mutations were only seen in RET (n = 1) and SDHB (n = 3). ('SDHB', 'Gene', '6390', (44, 48)) ('RET', 'Gene', '5979', (28, 31)) ('SDHB', 'Gene', (44, 48)) ('Mutations', 'Var', (0, 9)) ('RET', 'Gene', (28, 31)) 45218 22270996 Notably, in the patients with SDHB mutations, no malignant phenotype was observed during a mean follow-up of 23.3 years. ('SDHB', 'Gene', '6390', (30, 34)) ('patients', 'Species', '9606', (16, 24)) ('SDHB', 'Gene', (30, 34)) ('mutations', 'Var', (35, 44)) 45219 22270996 The frequency of germline mutations in patients with apparently sporadic Pheo and abdominal PGL in Western Sweden was lower than in previous studies. ('PGL', 'Phenotype', 'HP:0002668', (92, 95)) ('patients', 'Species', '9606', (39, 47)) ('Pheo', 'Phenotype', 'HP:0002666', (73, 77)) ('germline mutations', 'Var', (17, 35)) ('Pheo', 'Disease', (73, 77)) ('abdominal PGL', 'Disease', (82, 95)) 45222 22270996 Recently mutations in PHD2, SDHA, TMEM127, Kif-1Bbeta, and MAX have been described in association with Pheo/PGL. ('described', 'Reg', (73, 82)) ('mutations', 'Var', (9, 18)) ('PHD2', 'Gene', '54583', (22, 26)) ('Pheo', 'Phenotype', 'HP:0002666', (103, 107)) ('SDHA', 'Gene', (28, 32)) ('PHD2', 'Gene', (22, 26)) ('TMEM127', 'Gene', '55654', (34, 41)) ('Kif-1Bbeta', 'Gene', (43, 53)) ('PGL', 'Phenotype', 'HP:0002668', (108, 111)) ('SDHA', 'Gene', '6389', (28, 32)) ('Pheo/PGL', 'Disease', (103, 111)) ('association', 'Reg', (86, 97)) ('TMEM127', 'Gene', (34, 41)) 45224 22270996 in 2002 reported 24% germline mutations in SDHB, SDHD, RET, and VHL in patients with clinically nonsyndromic Pheo/PGL, genetic screening in these patients has attracted considerable interest. ('VHL', 'Disease', 'MESH:D006623', (64, 67)) ('RET', 'Gene', '5979', (55, 58)) ('VHL', 'Disease', (64, 67)) ('SDHB', 'Gene', '6390', (43, 47)) ('patients', 'Species', '9606', (71, 79)) ('germline mutations', 'Var', (21, 39)) ('SDHB', 'Gene', (43, 47)) ('RET', 'Gene', (55, 58)) ('SDHD', 'Gene', '6392', (49, 53)) ('PGL', 'Phenotype', 'HP:0002668', (114, 117)) ('Pheo', 'Phenotype', 'HP:0002666', (109, 113)) ('patients', 'Species', '9606', (146, 154)) ('SDHD', 'Gene', (49, 53)) 45238 22270996 Based on the presumed frequency of findings stepwise genetic testing was performed in the following order: (1) Sanger sequencing for point mutations in SDHB (exon 1-8), SDHD (exon 1-4) and VHL (exon 1-3); (2) In patients with negative sequencing results in SDHB, SDHD, and VHL sequencing of RET (exons 10, 11, 14, and 16); (3) In patients negative after testing for RET-mutation the presence of deletions in SDHB, SDHC, SDHD, and VHL was investigated by using multiplex ligation-dependent probe amplification (MLPA). ('SDHB', 'Gene', (408, 412)) ('SDHD', 'Gene', '6392', (169, 173)) ('SDHB', 'Gene', (152, 156)) ('SDHD', 'Gene', '6392', (263, 267)) ('RET', 'Gene', (291, 294)) ('patients', 'Species', '9606', (212, 220)) ('patients', 'Species', '9606', (330, 338)) ('SDHC', 'Gene', '6391', (414, 418)) ('RET', 'Gene', '5979', (366, 369)) ('VHL', 'Disease', (273, 276)) ('SDHD', 'Gene', '6392', (420, 424)) ('VHL', 'Disease', (430, 433)) ('SDHD', 'Gene', (169, 173)) ('VHL', 'Disease', 'MESH:D006623', (189, 192)) ('SDHD', 'Gene', (263, 267)) ('SDHB', 'Gene', '6390', (257, 261)) ('RET', 'Gene', (366, 369)) ('SDHD', 'Gene', (420, 424)) ('SDHC', 'Gene', (414, 418)) ('SDHB', 'Gene', '6390', (408, 412)) ('RET', 'Gene', '5979', (291, 294)) ('SDHB', 'Gene', (257, 261)) ('SDHB', 'Gene', '6390', (152, 156)) ('VHL', 'Disease', 'MESH:D006623', (273, 276)) ('deletions', 'Var', (395, 404)) ('VHL', 'Disease', 'MESH:D006623', (430, 433)) ('VHL', 'Disease', (189, 192)) 45243 22270996 DNA sequencing:SDHB, SDHD, and VHL section) was analyzed for exon deletions by MLPA for SDHB, SDHC, and SDHD (SALSA P226, MRC Holland, Amsterdam, The Netherlands) and VHL (SALSA P016-B2) and run according to the manufacturer's recommendations. ('exon deletions', 'Var', (61, 75)) ('SDHB', 'Gene', '6390', (15, 19)) ('VHL', 'Disease', (167, 170)) ('VHL', 'Disease', 'MESH:D006623', (167, 170)) ('SDHB', 'Gene', '6390', (88, 92)) ('SDHB', 'Gene', (15, 19)) ('SDHB', 'Gene', (88, 92)) ('VHL', 'Disease', (31, 34)) ('man', 'Species', '9606', (212, 215)) ('SDHD', 'Gene', '6392', (21, 25)) ('VHL', 'Disease', 'MESH:D006623', (31, 34)) ('MLPA', 'Gene', (79, 83)) ('SDHC', 'Gene', (94, 98)) ('SDHD', 'Gene', '6392', (104, 108)) ('SDHD', 'Gene', (21, 25)) ('SDHC', 'Gene', '6391', (94, 98)) ('SDHD', 'Gene', (104, 108)) 45252 22270996 Sequencing revealed one case with a missense mutation in the RET-gene, two cases with missense, and one case with a splice-site mutation in SDHB (Table 1). ('RET', 'Gene', (61, 64)) ('SDHB', 'Gene', '6390', (140, 144)) ('SDHB', 'Gene', (140, 144)) ('RET', 'Gene', '5979', (61, 64)) ('missense mutation', 'Var', (36, 53)) 45253 22270996 Six patients had single nucleotide polymorphisms in SDHB: c.18A>C (p.Ala6Ala) n = 4; c.24C>T (p.Ser8Ser) n = 1; c.487T>C (p.Ser163Pro) n = 1, Leiden Open Variants Database (LOVD) ID SDHB_00008, SDHB_00011, and SDHB_00038, respectively (http://chromium.liacs.nl/lovd_sdh/home.php?select_db=SDHB). ('p.Ala6Ala', 'SUBSTITUTION', 'None', (67, 76)) ('sdh', 'Gene', '6390', (266, 269)) ('p.Ala6Ala', 'Var', (67, 76)) ('p.Ser8Ser', 'Mutation', 'rs148738139', (94, 103)) ('SDHB', 'Gene', '6390', (182, 186)) ('c.24C>T', 'Var', (85, 92)) ('c.24C>T', 'Mutation', 'rs148738139', (85, 92)) ('c.487T>C', 'Mutation', 'rs33927012', (112, 120)) ('c.18A>C', 'Mutation', 'rs2746462', (58, 65)) ('patients', 'Species', '9606', (4, 12)) ('SDHB', 'Gene', '6390', (210, 214)) ('SDHB', 'Gene', '6390', (289, 293)) ('SDHB', 'Gene', '6390', (52, 56)) ('SDHB', 'Gene', (182, 186)) ('c.487T>C', 'Var', (112, 120)) ('SDHB', 'Gene', '6390', (194, 198)) ('c.18A>C', 'Var', (58, 65)) ('SDHB', 'Gene', (210, 214)) ('p.Ser163Pro', 'Mutation', 'rs33927012', (122, 133)) ('sdh', 'Gene', (266, 269)) ('SDHB', 'Gene', (52, 56)) ('SDHB', 'Gene', (289, 293)) ('SDHB', 'Gene', (194, 198)) 45255 22270996 The patient with a previously unrecognized RET p.Cys609Tyr mutation underwent a prophylactic thyroidectomy at age 40 years, 13 years after surgery for Pheo. ('p.Cys609Tyr', 'Var', (47, 58)) ('RET', 'Gene', (43, 46)) ('Pheo', 'Phenotype', 'HP:0002666', (151, 155)) ('p.Cys609Tyr', 'Mutation', 'rs77939446', (47, 58)) ('patient', 'Species', '9606', (4, 11)) ('RET', 'Gene', '5979', (43, 46)) 45257 22270996 All three patients with SDHB mutations are alive without evidence of tumor recurrence or malignant development at 15.7, 26.0, and 28.1 years of follow-up, respectively (Table 1). ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('tumor', 'Disease', (69, 74)) ('mutations', 'Var', (29, 38)) ('SDHB', 'Gene', '6390', (24, 28)) ('patients', 'Species', '9606', (10, 18)) ('SDHB', 'Gene', (24, 28)) ('tumor', 'Disease', 'MESH:D009369', (69, 74)) 45259 22270996 Mutations were only seen in RET and SDHB. ('SDHB', 'Gene', '6390', (36, 40)) ('RET', 'Gene', '5979', (28, 31)) ('SDHB', 'Gene', (36, 40)) ('Mutations', 'Var', (0, 9)) ('RET', 'Gene', (28, 31)) 45260 22270996 Notably, in the patients with SDHB mutations no evidence of malignancy was observed during a mean follow up of 23.3 years. ('malignancy', 'Disease', (60, 70)) ('patients', 'Species', '9606', (16, 24)) ('SDHB', 'Gene', '6390', (30, 34)) ('SDHB', 'Gene', (30, 34)) ('malignancy', 'Disease', 'MESH:D009369', (60, 70)) ('mutations', 'Var', (35, 44)) 45265 22270996 Considering established risk factors for hereditary disease, tested patients were more likely to have germline mutations than patients who did not consent to the study and patients who had died before the study started, because tested patients were younger and more frequently had malignant disease. ('malignant disease', 'Disease', 'MESH:D009369', (281, 298)) ('hereditary disease', 'Disease', (41, 59)) ('germline mutations', 'Var', (102, 120)) ('patients', 'Species', '9606', (235, 243)) ('hereditary disease', 'Disease', 'MESH:D030342', (41, 59)) ('malignant disease', 'Disease', (281, 298)) ('patients', 'Species', '9606', (68, 76)) ('patients', 'Species', '9606', (126, 134)) ('patients', 'Species', '9606', (172, 180)) 45268 22270996 However, a 39-year-old son of one deceased man with a malignant PGL has been diagnosed with an SDHB mutation (418 G>T, p.Val140Phe, LOVD ID SDHB_00095). ('PGL', 'Phenotype', 'HP:0002668', (64, 67)) ('man', 'Species', '9606', (43, 46)) ('418 G>T', 'Mutation', 'rs267607032', (110, 117)) ('p.Val140Phe', 'Mutation', 'rs267607032', (119, 130)) ('SDHB', 'Gene', '6390', (95, 99)) ('418 G>T', 'Var', (110, 117)) ('SDHB', 'Gene', '6390', (140, 144)) ('SDHB', 'Gene', (95, 99)) ('SDHB', 'Gene', (140, 144)) ('p.Val140Phe', 'Var', (119, 130)) 45274 22270996 SDHB carriers develop a malignant phenotype in 34.3-37.5% of the cases. ('malignant', 'CPA', (24, 33)) ('develop', 'Reg', (14, 21)) ('carriers', 'Var', (5, 13)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) 45275 22270996 In the present study, no patient with SDHB mutation had developed malignancy at presentation or during long-time follow-up (mean 23.3 years). ('malignancy', 'Disease', 'MESH:D009369', (66, 76)) ('mutation', 'Var', (43, 51)) ('malignancy', 'Disease', (66, 76)) ('patient', 'Species', '9606', (25, 32)) ('SDHB', 'Gene', '6390', (38, 42)) ('SDHB', 'Gene', (38, 42)) 45276 22270996 Hypermethylation of the P16INK4A promotor has been associated with malignant phenotype in SDHB carriers, indicating stepwise genetic changes during the malignant transformation. ('malignant phenotype', 'Disease', (67, 86)) ('SDHB', 'Gene', '6390', (90, 94)) ('SDHB', 'Gene', (90, 94)) ('Hypermethylation', 'Var', (0, 16)) ('associated', 'Reg', (51, 61)) ('P16INK4A', 'Gene', (24, 32)) ('P16INK4A', 'Gene', '1029', (24, 32)) 45280 22270996 In this registry-based study, we found a frequency of germline mutations in patients with apparently sporadic pheochromocytoma and abdominal paraganglioma in Western Sweden of 5.6%. ('patients', 'Species', '9606', (76, 84)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (110, 126)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (131, 154)) ('abdominal paraganglioma', 'Disease', (131, 154)) ('germline mutations', 'Var', (54, 72)) ('paraganglioma', 'Phenotype', 'HP:0002668', (141, 154)) ('pheochromocytoma', 'Disease', (110, 126)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (110, 126)) 45284 22277577 We report the uneventful cumulative administration of 111 GBq (= 3 Ci) 131I-MIBG in a patient with metastatic paraganglioma. ('GBq', 'Chemical', '-', (58, 61)) ('paraganglioma', 'Disease', 'MESH:D010235', (110, 123)) ('131I-MIBG', 'Var', (71, 80)) ('metastatic', 'Disease', (99, 109)) ('patient', 'Species', '9606', (86, 93)) ('131I-MIBG', 'Chemical', '-', (71, 80)) ('paraganglioma', 'Phenotype', 'HP:0002668', (110, 123)) ('paraganglioma', 'Disease', (110, 123)) 45285 22277577 Ten courses of 131I-MIBG therapy were given within six years, accomplishing symptomatic, hormonal and tumour responses with no serious adverse effects. ('131I-MIBG', 'Var', (15, 24)) ('tumour', 'Phenotype', 'HP:0002664', (102, 108)) ('131I-MIBG', 'Chemical', '-', (15, 24)) ('tumour', 'Disease', 'MESH:D009369', (102, 108)) ('tumour', 'Disease', (102, 108)) 45287 22277577 The observed cumulative activity of 131I-MIBG represents the highest value reported to our knowledge, and even though 12.6 GBq of 90Y-DOTATOC were added intermediately, no associated relevant bone marrow, hepatic or other toxicity were observed. ('GBq', 'Chemical', '-', (123, 126)) ('toxicity', 'Disease', 'MESH:D064420', (222, 230)) ('toxicity', 'Disease', (222, 230)) ('131I-MIBG', 'Var', (36, 45)) ('131I-MIBG', 'Chemical', '-', (36, 45)) 45295 22277577 One patient with metastatic pheochromocytoma was noted to receive as much as 85.9 GBq (2321 mCi) 131I-MIBG. ('pheochromocytoma', 'Disease', 'MESH:D010673', (28, 44)) ('131I-MIBG', 'Chemical', '-', (97, 106)) ('patient', 'Species', '9606', (4, 11)) ('metastatic', 'Disease', (17, 27)) ('pheochromocytoma', 'Disease', (28, 44)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (28, 44)) ('GBq', 'Chemical', '-', (82, 85)) ('131I-MIBG', 'Var', (97, 106)) 45334 22277577 We report the uncomplicated administration of 111 GBq (= 3 Ci) cumulative activity of 131I-MIBG without serious toxicity. ('toxicity', 'Disease', (112, 120)) ('131I-MIBG', 'Chemical', '-', (86, 95)) ('GBq', 'Chemical', '-', (50, 53)) ('131I-MIBG', 'Var', (86, 95)) ('toxicity', 'Disease', 'MESH:D064420', (112, 120)) 45335 22277577 This case underscores the therapeutic potential of 131I-MIBG therapy in metastatic disease as well as inter-individual dose-tolerance variability. ('131I-MIBG', 'Chemical', '-', (51, 60)) ('131I-MIBG', 'Var', (51, 60)) ('metastatic disease', 'Disease', (72, 90)) 45493 32462735 Metabolomics, machine learning and immunohistochemistry to predict succinate dehydrogenase mutational status in phaeochromocytomas and paragangliomas Phaeochromocytomas and paragangliomas (PPGLs) are rare neuroendocrine tumours with a hereditary background in over one-third of patients. ('tumour', 'Phenotype', 'HP:0002664', (220, 226)) ('PPGLs', 'Chemical', '-', (189, 194)) ('tumours', 'Phenotype', 'HP:0002664', (220, 227)) ('mutational', 'Var', (91, 101)) ('neuroendocrine tumours', 'Disease', 'MESH:D018358', (205, 227)) ('paragangliomas', 'Phenotype', 'HP:0002668', (135, 149)) ('neuroendocrine tumours', 'Disease', (205, 227)) ('succinate dehydrogenase', 'Gene', '6390', (67, 90)) ('patients', 'Species', '9606', (278, 286)) ('paragangliomas', 'Phenotype', 'HP:0002668', (173, 187)) ('succinate dehydrogenase', 'Gene', (67, 90)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (112, 149)) ('Phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (150, 187)) 45494 32462735 Mutations in succinate dehydrogenase (SDH) genes increase the risk for PPGLs and several other tumours. ('succinate dehydrogenase', 'Gene', '6390', (13, 36)) ('SDH', 'Gene', '6390', (38, 41)) ('tumours', 'Phenotype', 'HP:0002664', (95, 102)) ('PPGLs', 'Chemical', '-', (71, 76)) ('succinate dehydrogenase', 'Gene', (13, 36)) ('tumours', 'Disease', 'MESH:D009369', (95, 102)) ('tumours', 'Disease', (95, 102)) ('increase', 'Reg', (49, 57)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', (38, 41)) ('PPGLs', 'Disease', (71, 76)) ('tumour', 'Phenotype', 'HP:0002664', (95, 101)) 45495 32462735 Mutations in subunit B (SDHB) in particular are a risk factor for metastatic disease, further highlighting the importance of identifying SDHx mutations for patient management. ('SDH', 'Gene', '6390', (24, 27)) ('SDH', 'Gene', (137, 140)) ('risk factor', 'Reg', (50, 61)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', (24, 27)) ('metastatic disease', 'Disease', (66, 84)) ('SDHB', 'Gene', '6390', (24, 28)) ('SDH', 'Gene', '6390', (137, 140)) ('SDHB', 'Gene', (24, 28)) ('patient', 'Species', '9606', (156, 163)) 45503 32462735 From 186 tumours with confirmed status of SDHx variant pathogenicity, the combination of the two methods resulted in 185 correct predictions, highlighting the benefits of both strategies for patient management. ('tumours', 'Disease', 'MESH:D009369', (9, 16)) ('SDH', 'Gene', '6390', (42, 45)) ('tumours', 'Disease', (9, 16)) ('variant', 'Var', (47, 54)) ('SDH', 'Gene', (42, 45)) ('tumour', 'Phenotype', 'HP:0002664', (9, 15)) ('patient', 'Species', '9606', (191, 198)) ('tumours', 'Phenotype', 'HP:0002664', (9, 16)) 45506 32462735 Mutations of genes encoding these proteins can result in phaeochromocytomas and paragangliomas (PPGLs), gastrointestinal stromal tumours, renal cell carcinomas, and pituitary adenomas. ('paragangliomas', 'Phenotype', 'HP:0002668', (80, 94)) ('tumour', 'Phenotype', 'HP:0002664', (129, 135)) ('tumours', 'Phenotype', 'HP:0002664', (129, 136)) ('renal cell carcinomas', 'Disease', (138, 159)) ('carcinomas', 'Phenotype', 'HP:0030731', (149, 159)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (165, 183)) ('pituitary adenomas', 'Disease', (165, 183)) ('result in', 'Reg', (47, 56)) ('gastrointestinal stromal tumours', 'Disease', 'MESH:D046152', (104, 136)) ('Mutations', 'Var', (0, 9)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (138, 159)) ('gastrointestinal stromal tumours', 'Disease', (104, 136)) ('PPGLs', 'Chemical', '-', (96, 101)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (57, 94)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (138, 159)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (165, 183)) 45507 32462735 The mutations occur almost exclusively in the germline, leaving the patient and potentially family members at lifelong risk for disease. ('mutations', 'Var', (4, 13)) ('leaving', 'Reg', (56, 63)) ('patient', 'Species', '9606', (68, 75)) 45508 32462735 Mutations in SDHB in particular predispose to metastatic PPGL and are associated with increased mortality. ('predispose to', 'Reg', (32, 45)) ('SDHB', 'Gene', '6390', (13, 17)) ('metastatic PPGL', 'Disease', (46, 61)) ('mortality', 'Disease', 'MESH:D003643', (96, 105)) ('associated', 'Reg', (70, 80)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (13, 17)) ('mortality', 'Disease', (96, 105)) 45510 32462735 For gene variants affecting SDH, the routinely applied method is immunohistochemistry for SDHB (SDHB-IHC), where staining intensity of tumoural cells is compared with that of non-tumoural cells as internal control. ('SDH', 'Gene', '6390', (96, 99)) ('SDHB-IHC', 'Gene', (96, 104)) ('SDHB', 'Gene', (90, 94)) ('SDHB-IHC', 'Gene', '6390', (96, 104)) ('tumoural', 'Disease', (135, 143)) ('SDH', 'Gene', (28, 31)) ('SDH', 'Gene', (90, 93)) ('tumoural', 'Disease', 'MESH:D009369', (179, 187)) ('SDH', 'Gene', (96, 99)) ('tumour', 'Phenotype', 'HP:0002664', (179, 185)) ('variants', 'Var', (9, 17)) ('tumoural', 'Disease', (179, 187)) ('tumour', 'Phenotype', 'HP:0002664', (135, 141)) ('SDHB', 'Gene', '6390', (96, 100)) ('SDHB', 'Gene', '6390', (90, 94)) ('SDH', 'Gene', '6390', (28, 31)) ('SDH', 'Gene', '6390', (90, 93)) ('tumoural', 'Disease', 'MESH:D009369', (135, 143)) ('SDHB', 'Gene', (96, 100)) 45514 32462735 The ratio of these two metabolites, the tissue succinate to fumarate ratio (SFR), can predict SDHx mutations with a high sensitivity and specificity in PPGL and is also now being applied to other tumours. ('fumarate', 'Chemical', 'MESH:D005650', (60, 68)) ('SDH', 'Gene', '6390', (94, 97)) ('tumour', 'Phenotype', 'HP:0002664', (196, 202)) ('tumours', 'Phenotype', 'HP:0002664', (196, 203)) ('mutations', 'Var', (99, 108)) ('succinate', 'Chemical', 'MESH:D019802', (47, 56)) ('SDH', 'Gene', (94, 97)) ('tumours', 'Disease', 'MESH:D009369', (196, 203)) ('tumours', 'Disease', (196, 203)) 45515 32462735 So far, there has been no formal comparison of the two methods for predicting SDHx mutational status. ('SDH', 'Gene', '6390', (78, 81)) ('mutational status', 'Var', (83, 100)) ('SDH', 'Gene', (78, 81)) 45523 32462735 Genetic testing, accomplished as previously described, yielded findings of germline or somatic variants in 18 genes in 49.1% (195/397) of patients (for simplicity, only 11 are displayed in Table 1). ('findings', 'Reg', (63, 71)) ('patients', 'Species', '9606', (138, 146)) ('germline', 'Var', (75, 83)) 45524 32462735 Eleven patients had variants of unknown significance in SDH genes, classified as variants of unknown significance according to the standards and guidelines of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology. ('variants', 'Var', (20, 28)) ('patients', 'Species', '9606', (7, 15)) ('SDH', 'Gene', '6390', (56, 59)) ('SDH', 'Gene', (56, 59)) 45535 32462735 Patients from cohort 2 (excluding SDHx variants of unknown significance and FFPE only tissue) were used to develop the models and were randomly divided into training and internal validation sets in ratios ranging from 50/50 to 90/10 in steps of 10%. ('Patients', 'Species', '9606', (0, 8)) ('SDH', 'Gene', (34, 37)) ('variants', 'Var', (39, 47)) ('SDH', 'Gene', '6390', (34, 37)) 45536 32462735 The predictive models were applied to the PPGLs of cohort 1 to calculate the likelihood of SDHx mutations (external validation). ('SDH', 'Gene', (91, 94)) ('SDH', 'Gene', '6390', (91, 94)) ('mutations', 'Var', (96, 105)) ('PPGLs', 'Chemical', '-', (42, 47)) 45553 32462735 The LDA models calculate probabilities for the likelihood of an SDHx mutation based on the metabolite inputs; for the samples differently rated in LDA A and LDA B, the probabilities were 57% and 99% for LDA A, and 42% and 32% for LDA B, respectively (supplementary material, Table S5). ('SDH', 'Gene', (64, 67)) ('LDA B', 'Chemical', '-', (157, 162)) ('LDA B', 'Chemical', '-', (230, 235)) ('mutation', 'Var', (69, 77)) ('SDH', 'Gene', '6390', (64, 67)) 45560 32462735 Metabolite profiling complemented SDHB-IHC by correctly predicting the SDHx mutational status of all but one case where SDHB-IHC incorrectly predicted the mutational status. ('SDH', 'Gene', (71, 74)) ('predicting', 'Reg', (56, 66)) ('SDHB-IHC', 'Gene', (120, 128)) ('SDHB-IHC', 'Gene', (34, 42)) ('mutational', 'Var', (76, 86)) ('SDH', 'Gene', '6390', (120, 123)) ('SDHB-IHC', 'Gene', '6390', (34, 42)) ('SDHB-IHC', 'Gene', '6390', (120, 128)) ('SDH', 'Gene', (34, 37)) ('SDH', 'Gene', (120, 123)) ('SDH', 'Gene', '6390', (71, 74)) ('SDH', 'Gene', '6390', (34, 37)) 45565 32462735 Accuracy of predictions of SDHx mutations according to SDHB-IHC indicated no significant differences between local pathologists and experts, suggesting that SDHB-IHC does not require specialised training (Table 5). ('SDHB-IHC', 'Gene', '6390', (157, 165)) ('SDHB-IHC', 'Gene', (157, 165)) ('SDH', 'Gene', '6390', (55, 58)) ('SDHB-IHC', 'Gene', '6390', (55, 63)) ('SDH', 'Gene', (157, 160)) ('SDHB-IHC', 'Gene', (55, 63)) ('SDH', 'Gene', (27, 30)) ('mutations', 'Var', (32, 41)) ('SDH', 'Gene', (55, 58)) ('SDH', 'Gene', '6390', (157, 160)) ('SDH', 'Gene', '6390', (27, 30)) 45567 32462735 These six cases comprised five head and neck paragangliomas with SDHx mutations and one adrenal PPGL without an SDHx mutation, indicating again that head and neck paragangliomas are the most challenging specimens to interpret (supplementary material, Table S5). ('SDH', 'Gene', '6390', (65, 68)) ('mutations', 'Var', (70, 79)) ('neck paragangliomas', 'Disease', (40, 59)) ('SDH', 'Gene', (112, 115)) ('neck paragangliomas', 'Disease', (158, 177)) ('paragangliomas', 'Phenotype', 'HP:0002668', (45, 59)) ('SDH', 'Gene', (65, 68)) ('SDH', 'Gene', '6390', (112, 115)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (31, 59)) ('paragangliomas', 'Phenotype', 'HP:0002668', (163, 177)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (149, 177)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (40, 59)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (158, 177)) 45568 32462735 Amongst the tumours evaluated, there were 11 patients (three in cohort 1 and eight in cohort 2) with a variant of unknown significance in one of the SDHx genes. ('tumours', 'Disease', 'MESH:D009369', (12, 19)) ('SDH', 'Gene', '6390', (149, 152)) ('tumours', 'Disease', (12, 19)) ('SDH', 'Gene', (149, 152)) ('patients', 'Species', '9606', (45, 53)) ('tumours', 'Phenotype', 'HP:0002664', (12, 19)) ('tumour', 'Phenotype', 'HP:0002664', (12, 18)) ('variant', 'Var', (103, 110)) 45571 32462735 LDA Model B predicted SDH impairment in two further PPGLs, a splice site variant in SDHA (NM_004168.3:c.457-1G>A) and an indel variant in SDHC (NM_003001.3:c.256_257insTTT, p. (Gly86delinsValCys). ('NM_003001.3:c.256_257insTTT', 'Mutation', 'c.256_257insTTT', (144, 171)) ('NM_003001.3:c.256_257insTTT', 'Var', (144, 171)) ('SDH', 'Gene', '6390', (138, 141)) ('SDH impairment', 'Disease', (22, 36)) ('NM_004168.3', 'Var', (90, 101)) ('SDHC', 'Gene', (138, 142)) ('NM_004168.3:c.457-1G>A', 'Mutation', 'c.457-1G>A', (90, 112)) ('SDH', 'Gene', '6390', (22, 25)) ('SDH', 'Gene', '6390', (84, 87)) ('SDH', 'Gene', (138, 141)) ('SDH impairment', 'Disease', 'MESH:D060825', (22, 36)) ('SDHC', 'Gene', '6391', (138, 142)) ('PPGLs', 'Chemical', '-', (52, 57)) ('SDH', 'Gene', (22, 25)) ('SDH', 'Gene', (84, 87)) 45573 32462735 The missense variant of SDHA, NM_004168.3:c.1772C>T, p.(Ala591Val), was predicted to have no functional impact based on metabolite profiling and SDHB-IHC as interpreted by a local pathologist. ('NM_004168.3:c.1772C>T', 'Mutation', 'rs367621815', (30, 51)) ('SDH', 'Gene', '6390', (24, 27)) ('c.1772C>T', 'Var', (42, 51)) ('SDH', 'Gene', '6390', (145, 148)) ('SDH', 'Gene', (145, 148)) ('SDHB-IHC', 'Gene', '6390', (145, 153)) ('SDH', 'Gene', (24, 27)) ('SDHB-IHC', 'Gene', (145, 153)) ('p.(Ala591Val)', 'Mutation', 'rs367621815', (53, 66)) 45577 32462735 We therefore propose an approach that combines metabolite profiling and SDHB-IHC to better facilitate identifying or excluding SDH impairment when tumour material is available, particularly for selected patients in whom there is a suspicion of the presence of SDH mutation and where genetic testing yields equivocal or negative results or is unavailable. ('SDH', 'Gene', (127, 130)) ('SDH', 'Gene', '6390', (72, 75)) ('tumour', 'Phenotype', 'HP:0002664', (147, 153)) ('SDHB-IHC', 'Gene', (72, 80)) ('SDH impairment when tumour', 'Disease', (127, 153)) ('patients', 'Species', '9606', (203, 211)) ('SDHB-IHC', 'Gene', '6390', (72, 80)) ('SDH', 'Gene', '6390', (260, 263)) ('SDH', 'Gene', (72, 75)) ('mutation', 'Var', (264, 272)) ('SDH impairment when tumour', 'Disease', 'MESH:D009369', (127, 153)) ('SDH', 'Gene', '6390', (127, 130)) ('SDH', 'Gene', (260, 263)) 45578 32462735 First, the high specificity of metabolite profiling (99%) translates to high positive predictive value of a positive result, strongly indicating a mutation in an SDHx gene. ('mutation', 'Var', (147, 155)) ('SDH', 'Gene', '6390', (162, 165)) ('indicating', 'Reg', (134, 144)) ('SDH', 'Gene', (162, 165)) 45594 32462735 While the predictive models generated in this study were targeted towards identifying SDHx mutations, other models could be generated based on measurements of metabolites in the same panel to predict mutations and functional deficiencies impacting other enzymes. ('SDH', 'Gene', '6390', (86, 89)) ('functional deficiencies', 'Disease', 'MESH:D015499', (214, 237)) ('functional deficiencies', 'Disease', (214, 237)) ('SDH', 'Gene', (86, 89)) ('mutations', 'Var', (91, 100)) 45595 32462735 Results are provided as per cent probabilities of the tumour harbouring an SDHx mutation. ('tumour', 'Disease', 'MESH:D009369', (54, 60)) ('tumour', 'Disease', (54, 60)) ('SDH', 'Gene', '6390', (75, 78)) ('tumour', 'Phenotype', 'HP:0002664', (54, 60)) ('SDH', 'Gene', (75, 78)) ('mutation', 'Var', (80, 88)) 45598 32462735 In our combined cohorts, a total of 11 variants of unknown significance in SDHx genes were identified. ('SDH', 'Gene', '6390', (75, 78)) ('SDH', 'Gene', (75, 78)) ('variants', 'Var', (39, 47)) 45602 32462735 At least in one of these cases, SDHA NM_004168.3: c.457-1G>A, evidence suggests a true mutation. ('SDH', 'Gene', (32, 35)) ('c.457-1G>A', 'Var', (50, 60)) ('c.457-1G>A', 'SUBSTITUTION', 'None', (50, 60)) ('SDH', 'Gene', '6390', (32, 35)) 45609 32545894 Multiple reports have shown that mis-regulation of HOX gene expression plays key roles in the development of cancers. ('roles', 'Reg', (81, 86)) ('cancers', 'Disease', 'MESH:D009369', (109, 116)) ('cancers', 'Phenotype', 'HP:0002664', (109, 116)) ('cancers', 'Disease', (109, 116)) ('HOX gene', 'Gene', (51, 59)) ('mis-regulation', 'Var', (33, 47)) ('cancer', 'Phenotype', 'HP:0002664', (109, 115)) 45616 32545894 Multiple reports have demonstrated that mis-regulation of HOX genes expression plays key roles in the development of cancers. ('mis-regulation', 'Var', (40, 54)) ('cancer', 'Phenotype', 'HP:0002664', (117, 123)) ('roles', 'Reg', (89, 94)) ('cancers', 'Phenotype', 'HP:0002664', (117, 124)) ('HOX genes', 'Gene', (58, 67)) ('cancers', 'Disease', 'MESH:D009369', (117, 124)) ('cancers', 'Disease', (117, 124)) 45671 32545894 The expression correlation observed between HOXB5, HOXB6, and HOXB7 in ESCA, is in line with a previous report that showed that expression changes in the three "midcluster" HOXB genes, namely HOXB5, HOXB6, and HOXB7, can trigger changes in the transcriptional program of adult esophageal cells, with implications to the early stages of esophageal carcinogenesis. ('HOXB', 'Gene', (62, 66)) ('HOXB7', 'Gene', '3217', (210, 215)) ('HOXB7', 'Gene', (210, 215)) ('HOXB', 'Gene', (44, 48)) ('HOXB', 'Gene', (173, 177)) ('HOXB', 'Gene', '3210', (199, 203)) ('HOXB', 'Gene', (51, 55)) ('HOXB', 'Gene', (210, 214)) ('HOXB6', 'Gene', '3216', (51, 56)) ('HOXB6', 'Gene', (51, 56)) ('HOXB5', 'Gene', (44, 49)) ('HOXB', 'Gene', (192, 196)) ('HOXB6', 'Gene', '3216', (199, 204)) ('HOXB7', 'Gene', '3217', (62, 67)) ('trigger changes', 'Reg', (221, 236)) ('esophageal carcinogenesis', 'Disease', (336, 361)) ('HOXB7', 'Gene', (62, 67)) ('HOXB', 'Gene', '3210', (62, 66)) ('changes', 'Var', (139, 146)) ('HOXB6', 'Gene', (199, 204)) ('HOXB', 'Gene', '3210', (44, 48)) ('HOXB', 'Gene', '3210', (173, 177)) ('transcriptional program', 'MPA', (244, 267)) ('HOXB5', 'Gene', '3215', (44, 49)) ('HOXB5', 'Gene', (192, 197)) ('HOXB', 'Gene', '3210', (51, 55)) ('HOXB', 'Gene', '3210', (210, 214)) ('esophageal carcinogenesis', 'Disease', 'MESH:D063646', (336, 361)) ('HOXB', 'Gene', (199, 203)) ('HOXB', 'Gene', '3210', (192, 196)) ('ESCA', 'Phenotype', 'HP:0011459', (71, 75)) ('HOXB5', 'Gene', '3215', (192, 197)) 45812 29264546 We identified in this family germline mutation of the RET protooncogene. ('RET', 'Gene', '5979', (54, 57)) ('RET', 'Gene', (54, 57)) ('germline mutation', 'Var', (29, 46)) 45880 29082061 Dopamine levels were severely elevated, >25x normal range at 6988 mug/day (0-250). ('6988 mug/day', 'Var', (61, 73)) ('elevated', 'PosReg', (30, 38)) ('Dopamine levels', 'MPA', (0, 15)) ('Dopamine', 'Chemical', 'MESH:D004298', (0, 8)) 45923 28675758 Metformin Suppresses Proliferation and Viability of Rat Pheochromocytoma Cells Previous studies have clearly demonstrated that metformin inhibits cell proliferation and cell growth in many types of human cancers. ('cell growth', 'CPA', (169, 180)) ('rat', 'Species', '10116', (158, 161)) ('Metformin', 'Chemical', 'MESH:D008687', (0, 9)) ('cell proliferation', 'CPA', (146, 164)) ('cancers', 'Disease', 'MESH:D009369', (204, 211)) ('human', 'Species', '9606', (198, 203)) ('Proliferation', 'CPA', (21, 34)) ('Viability', 'CPA', (39, 48)) ('cancer', 'Phenotype', 'HP:0002664', (204, 210)) ('rat', 'Species', '10116', (116, 119)) ('inhibits', 'NegReg', (137, 145)) ('rat', 'Species', '10116', (28, 31)) ('Suppresses', 'NegReg', (10, 20)) ('cancers', 'Phenotype', 'HP:0002664', (204, 211)) ('cancers', 'Disease', (204, 211)) ('metformin', 'Var', (127, 136)) ('Rat Pheochromocytoma', 'CellLine', 'CVCL:0492', (52, 72)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (56, 72)) ('metformin', 'Chemical', 'MESH:D008687', (127, 136)) 45933 28675758 Genetic studies have demonstrated that mutations of several genes could increase the risk of pheochromocytoma, such as multiple endocrine neoplasia 2A, 2B (MEN2A and MEN2B), and von Hippel-Lindau (VHL). ('increase', 'PosReg', (72, 80)) ('von Hippel-Lindau', 'Gene', (178, 195)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('multiple endocrine neoplasia', 'Disease', (119, 147)) ('pheochromocytoma', 'Disease', (93, 109)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (93, 109)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (128, 147)) ('neoplasia', 'Phenotype', 'HP:0002664', (138, 147)) ('mutations', 'Var', (39, 48)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (119, 147)) ('von Hippel-Lindau', 'Gene', '24874', (178, 195)) ('VHL', 'Disease', 'MESH:D006623', (197, 200)) ('rat', 'Species', '10116', (28, 31)) ('VHL', 'Disease', (197, 200)) 45937 28675758 In addition, several retrospective reports showed that metformin is also associated with a decreased risk of developing cancer and cancer-related mortality. ('cancer', 'Disease', (131, 137)) ('metformin', 'Chemical', 'MESH:D008687', (55, 64)) ('cancer', 'Phenotype', 'HP:0002664', (120, 126)) ('cancer', 'Phenotype', 'HP:0002664', (131, 137)) ('cancer', 'Disease', (120, 126)) ('cancer', 'Disease', 'MESH:D009369', (120, 126)) ('metformin', 'Var', (55, 64)) ('cancer', 'Disease', 'MESH:D009369', (131, 137)) ('decreased', 'NegReg', (91, 100)) 45973 28675758 Among them, Ccna2, Ccnb2, and PCNA were significantly downregulated by metformin treatment (Figure 5A), whereas other cell-cycle regulators, including Cdkn1b, Cdkn1c, Ccnd1, and Ccnd3, remained unaffected (Figure 5B). ('metformin', 'Var', (71, 80)) ('Cdkn1c', 'Gene', '246060', (159, 165)) ('Ccnd3', 'Gene', (178, 183)) ('metformin', 'Chemical', 'MESH:D008687', (71, 80)) ('PCNA', 'Gene', '25737', (30, 34)) ('Cdkn1b', 'Gene', (151, 157)) ('PCNA', 'Gene', (30, 34)) ('Cdkn1b', 'Gene', '83571', (151, 157)) ('Ccnd3', 'Gene', '25193', (178, 183)) ('Ccna2', 'Gene', (12, 17)) ('Ccnb2', 'Gene', '363088', (19, 24)) ('Ccnb2', 'Gene', (19, 24)) ('Ccnd1', 'Gene', (167, 172)) ('Ccnd1', 'Gene', '58919', (167, 172)) ('downregulated', 'NegReg', (54, 67)) ('Cdkn1c', 'Gene', (159, 165)) ('Ccna2', 'Gene', '114494', (12, 17)) 45977 28675758 Moreover, phosphorylated ACC, a downstream target of AMPK, was also induced by metformin (Figure 6A, 6B). ('ACC', 'Gene', (25, 28)) ('AMPK', 'Gene', (53, 57)) ('phosphorylated', 'MPA', (10, 24)) ('induced', 'Reg', (68, 75)) ('metformin', 'Var', (79, 88)) ('metformin', 'Chemical', 'MESH:D008687', (79, 88)) ('AMPK', 'Gene', '78975', (53, 57)) 45986 28675758 At the molecular level, our results indicate that Ccna2 and Ccnb2, which are 2 critical regulators of cell-cycle progression, are downregulated by metformin and may be intracellular targets of its antiproliferative activities. ('downregulated', 'NegReg', (130, 143)) ('Ccna2', 'Gene', '114494', (50, 55)) ('rat', 'Species', '10116', (208, 211)) ('metformin', 'Var', (147, 156)) ('Ccnb2', 'Gene', '363088', (60, 65)) ('metformin', 'Chemical', 'MESH:D008687', (147, 156)) ('Ccna2', 'Gene', (50, 55)) ('Ccnb2', 'Gene', (60, 65)) 45990 28675758 Previous studies have shown that metformin exerts an antitumor effect in breast and prostate cancer cells through a decrease of cyclin D1 level. ('metformin', 'Chemical', 'MESH:D008687', (33, 42)) ('cyclin D1', 'Gene', '58919', (128, 137)) ('decrease', 'NegReg', (116, 124)) ('cyclin D1', 'Gene', (128, 137)) ('tumor', 'Disease', 'MESH:D009369', (57, 62)) ('cancer', 'Phenotype', 'HP:0002664', (93, 99)) ('prostate cancer', 'Phenotype', 'HP:0012125', (84, 99)) ('tumor', 'Phenotype', 'HP:0002664', (57, 62)) ('breast and prostate cancer', 'Disease', 'MESH:D011471', (73, 99)) ('tumor', 'Disease', (57, 62)) ('metformin', 'Var', (33, 42)) 45993 28675758 Mechanistically, initial studies found that metformin activates the AMPK pathway, which is essential for the antiproliferative effects of metformin. ('AMPK', 'Gene', '78975', (68, 72)) ('metformin', 'Var', (44, 53)) ('activates', 'PosReg', (54, 63)) ('AMPK', 'Gene', (68, 72)) ('metformin', 'Chemical', 'MESH:D008687', (44, 53)) ('rat', 'Species', '10116', (120, 123)) ('metformin', 'Chemical', 'MESH:D008687', (138, 147)) 45994 28675758 However, subsequent studies showed that genetic inhibition of the AMPK pathway did not inhibit the effect of metformin, suggesting that additional mechanisms are involved. ('metformin', 'Chemical', 'MESH:D008687', (109, 118)) ('AMPK', 'Gene', (66, 70)) ('genetic', 'Var', (40, 47)) ('AMPK', 'Gene', '78975', (66, 70)) 45996 28675758 Here, we found that metformin also activates phosphorylated AMPK, whereas it inhibits phosphorylated mTOR and ERK1/2. ('activates', 'PosReg', (35, 44)) ('mTOR', 'Gene', (101, 105)) ('AMPK', 'Gene', (60, 64)) ('ERK1/2', 'Gene', (110, 116)) ('ERK1/2', 'Gene', '50689;116590', (110, 116)) ('metformin', 'Var', (20, 29)) ('metformin', 'Chemical', 'MESH:D008687', (20, 29)) ('AMPK', 'Gene', '78975', (60, 64)) ('inhibits', 'NegReg', (77, 85)) ('mTOR', 'Gene', '56718', (101, 105)) 46002 28675758 At the molecular level, AMPK, mTOR, and ERK1/2 signaling pathways were regulated by metformin. ('metformin', 'Chemical', 'MESH:D008687', (84, 93)) ('AMPK', 'Gene', '78975', (24, 28)) ('regulated', 'Reg', (71, 80)) ('AMPK', 'Gene', (24, 28)) ('ERK1/2', 'Gene', (40, 46)) ('ERK1/2', 'Gene', '50689;116590', (40, 46)) ('mTOR', 'Gene', '56718', (30, 34)) ('mTOR', 'Gene', (30, 34)) ('metformin', 'Var', (84, 93)) 46161 25589844 The immunohistochemical staining for chromogranin A was positive (x200) (Fig. ('x200', 'Var', (66, 70)) ('chromogranin A', 'Gene', (37, 51)) ('chromogranin A', 'Gene', '1113', (37, 51)) 46171 25589844 Such unusual cases should lead us to evaluate the pheochromocytoma further, such as for gene mutations and MEN, if the patient is young. ('patient', 'Species', '9606', (119, 126)) ('pheochromocytoma', 'Disease', (50, 66)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (50, 66)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (50, 66)) ('gene mutations', 'Var', (88, 102)) ('MEN', 'Species', '9606', (107, 110)) 46182 24516563 Unexpectedly, luciferase expression, bioluminescence and GFP expression were paradoxically increased by both camptothecin and SN38, the active metabolite of irinotecan, thereby masking cell death. ('GFP', 'Gene', (57, 60)) ('camptothecin', 'Chemical', 'MESH:D002166', (109, 121)) ('SN38', 'Var', (126, 130)) ('camptothecin', 'Var', (109, 121)) ('expression', 'MPA', (25, 35)) ('irinotecan', 'Chemical', 'MESH:D000077146', (157, 167)) ('increased', 'PosReg', (91, 100)) ('bioluminescence', 'MPA', (37, 52)) ('luciferase', 'Enzyme', (14, 24)) 46226 24516563 Aside from expression of its two marker proteins, MPC G-L9 is similar to its parent tumor. ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('MPC G-L9', 'Var', (50, 58)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('MPC', 'Chemical', '-', (50, 53)) ('tumor', 'Disease', (84, 89)) 46259 24516563 With MPC GL-9, the results of cytotoxicity testing by XTT assay were comparable to those with the parent tumor. ('MPC GL-9', 'Var', (5, 13)) ('GL-9', 'CellLine', 'CVCL:0045', (9, 13)) ('cytotoxicity', 'Disease', (30, 42)) ('tumor', 'Disease', 'MESH:D009369', (105, 110)) ('MPC', 'Chemical', '-', (5, 8)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('cytotoxicity', 'Disease', 'MESH:D064420', (30, 42)) ('tumor', 'Disease', (105, 110)) 46265 24516563 Because CgA is a marker for neuroendocrine secretory granules, this finding indicates that the drug effects on levels of luciferase and GFP are specific to the GFP-luciferase construct rather than increased granule content or other generalized cellular responses. ('CgA', 'Gene', '1113', (8, 11)) ('GFP-luciferase', 'Var', (160, 174)) ('GFP', 'Gene', (136, 139)) ('CgA', 'Gene', (8, 11)) 46269 24516563 On a molar basis the most potent drug was SN38, which was approximately 10 times as potent as camptothecin, with 100 ng/mL SN38 (0.26 uM) or 1 ug/mL camptothecin (2.7 uM) each causing ~90% cell death (Fig. ('camptothecin', 'Chemical', 'MESH:D002166', (94, 106)) ('cell death', 'CPA', (189, 199)) ('camptothecin', 'Chemical', 'MESH:D002166', (149, 161)) ('SN38', 'Var', (123, 127)) 46273 24516563 8, SN38 killed human PCC cells similarly to camptothecin, although both drugs were less effective against human PCC than against MPC cells. ('human', 'Species', '9606', (106, 111)) ('human', 'Species', '9606', (15, 20)) ('PCC', 'Gene', (112, 115)) ('PCC', 'Gene', (21, 24)) ('SN38', 'Var', (3, 7)) ('PCC', 'Phenotype', 'HP:0002666', (112, 115)) ('MPC', 'Chemical', '-', (129, 132)) ('camptothecin', 'Chemical', 'MESH:D002166', (44, 56)) ('PCC', 'Phenotype', 'HP:0002666', (21, 24)) ('PCC', 'Gene', '1421', (112, 115)) ('PCC', 'Gene', '1421', (21, 24)) 46277 24516563 Importantly, the representative tumors tested included three from patients with germline SDHB mutations, which are the most likely to metastasize. ('mutations', 'Var', (94, 103)) ('tumors', 'Phenotype', 'HP:0002664', (32, 38)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('SDHB', 'Gene', '6390', (89, 93)) ('tumors', 'Disease', (32, 38)) ('SDHB', 'Gene', (89, 93)) ('patients', 'Species', '9606', (66, 74)) ('tumors', 'Disease', 'MESH:D009369', (32, 38)) 46305 24516563 In addition, cytostasis induced by pre-treatment with high concentrations of 5-aza might cause MPC and MTT cells to more closely resemble primary human PCC/PGL cultures, in which no tumor cells proliferate, thereby possibly increasing the relevance of both models. ('5-aza', 'Var', (77, 82)) ('tumor', 'Disease', (182, 187)) ('PCC/PGL', 'Gene', '1421', (152, 159)) ('PCC', 'Phenotype', 'HP:0002666', (152, 155)) ('MTT', 'Chemical', '-', (103, 106)) ('cytostasis', 'MPA', (13, 23)) ('MPC', 'Chemical', '-', (95, 98)) ('human', 'Species', '9606', (146, 151)) ('5-aza', 'Chemical', 'MESH:D001374', (77, 82)) ('tumor', 'Disease', 'MESH:D009369', (182, 187)) ('PGL', 'Phenotype', 'HP:0002668', (156, 159)) ('PCC/PGL', 'Gene', (152, 159)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) 46310 24516563 Tumors with SDHB mutations have a distinct pseudo-hypoxic signature. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('SDHB', 'Gene', '6390', (12, 16)) ('SDHB', 'Gene', (12, 16)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('pseudo-hypoxic signature', 'MPA', (43, 67)) ('mutations', 'Var', (17, 26)) 46312 24516563 However, a wide range of responsiveness among the three tested tumors from patients with SDHB mutations suggests that characteristics of individual tumors will be more important than genetic background. ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('mutations', 'Var', (94, 103)) ('patients', 'Species', '9606', (75, 83)) ('tumors', 'Phenotype', 'HP:0002664', (63, 69)) ('tumors', 'Disease', 'MESH:D009369', (63, 69)) ('tumors', 'Disease', (63, 69)) ('SDHB', 'Gene', '6390', (89, 93)) ('tumors', 'Disease', (148, 154)) ('tumors', 'Disease', 'MESH:D009369', (148, 154)) ('tumors', 'Phenotype', 'HP:0002664', (148, 154)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('SDHB', 'Gene', (89, 93)) 46318 24516563 This can occur either in response to a methylation inhibitor such as 5-azacytidine or to a histone deacetylase inhibitor, which would facilitate chromatin remodeling and removal of methylated DNA. ('5-azacytidine', 'Chemical', 'MESH:D001374', (69, 82)) ('5-azacytidine', 'Var', (69, 82)) ('chromatin remodeling', 'CPA', (145, 165)) ('facilitate', 'PosReg', (134, 144)) 46321 24516563 It should be borne in mind that TOP1 inhibitors and other drugs can cause anomalous increases in CMV reporter-controlled expression of luciferase and GFP, potentially confounding the interpretation of tumor imaging studies and pre-clinical drug testing. ('luciferase', 'Enzyme', (135, 145)) ('inhibitors', 'Var', (37, 47)) ('tumor', 'Disease', 'MESH:D009369', (201, 206)) ('anomalous increases', 'Disease', 'MESH:D003805', (74, 93)) ('TOP1', 'Gene', (32, 36)) ('anomalous increases', 'Disease', (74, 93)) ('tumor', 'Phenotype', 'HP:0002664', (201, 206)) ('CMV reporter-controlled expression', 'MPA', (97, 131)) ('tumor', 'Disease', (201, 206)) ('GFP', 'Gene', (150, 153)) 46325 23267837 We further demonstrated significant anti-tumor effects mediated by cytotoxic somatostatin analogs, AN-162 and AN-238, by LHRH antagonist, Cetrorelix, by the cytotoxic LHRH analog, AN-152, and by recently developed GHRH antagonist, MIA-602, on MPC and for AN-152 and MIA-602 on MTT cells. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('AN', 'Chemical', 'MESH:D000431', (99, 101)) ('tumor', 'Disease', (41, 46)) ('somatostatin', 'Gene', '20604', (77, 89)) ('GHRH', 'Gene', (214, 218)) ('somatostatin', 'Gene', (77, 89)) ('MPC', 'Chemical', '-', (243, 246)) ('AN-162', 'Var', (99, 105)) ('AN', 'Chemical', 'MESH:D000431', (180, 182)) ('AN', 'Chemical', 'MESH:D000431', (110, 112)) ('AN-238', 'Var', (110, 116)) ('AN', 'Chemical', 'MESH:D000431', (255, 257)) ('MTT', 'Chemical', '-', (277, 280)) ('GHRH', 'Gene', '14601', (214, 218)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) 46337 23267837 Recently, a new class of GHRH antagonists (MIA-313, MIA-602, MIA-604, and MIA-610) was generated by Schally and co-workers and shown to be effective anti-neoplastic agents, as for example demonstrated on ovarian cancer. ('MIA-604', 'Var', (61, 68)) ('GHRH', 'Gene', '14601', (25, 29)) ('ovarian cancer', 'Disease', (204, 218)) ('MIA-313', 'Var', (43, 50)) ('GHRH', 'Gene', (25, 29)) ('MIA-602', 'Var', (52, 59)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (204, 218)) ('MIA-610', 'Var', (74, 81)) ('MIA-604', 'CellLine', 'CVCL:0816', (61, 68)) ('ovarian cancer', 'Disease', 'MESH:D010051', (204, 218)) ('cancer', 'Phenotype', 'HP:0002664', (212, 218)) 46343 23267837 Aberrantly expressed neuropeptide hormone receptors are frequently found in a subgroup of adrenocortical tumors, especially in ACTH-independent macronodular adrenal hyperplasia. ('ACTH', 'Gene', '18976', (127, 131)) ('Aberrantly expressed', 'Var', (0, 20)) ('hormone receptor', 'Gene', (34, 50)) ('adrenocortical tumors', 'Disease', (90, 111)) ('adrenal hyperplasia', 'Phenotype', 'HP:0008221', (157, 176)) ('hormone receptor', 'Gene', '15370', (34, 50)) ('ACTH', 'Gene', (127, 131)) ('found', 'Reg', (67, 72)) ('adrenocortical tumors', 'Disease', 'MESH:D018268', (90, 111)) ('macronodular adrenal hyperplasia', 'Disease', 'MESH:C565662', (144, 176)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('macronodular adrenal hyperplasia', 'Disease', (144, 176)) ('macronodular adrenal hyperplasia', 'Phenotype', 'HP:0008231', (144, 176)) ('tumors', 'Phenotype', 'HP:0002664', (105, 111)) 46358 23267837 In our current investigation we employed somatostatin octapeptide analog RC-160, targeted cytotoxic somatostatin analogs AN-162 and AN-238, LHRH antagonist Cetrorelix, cytotoxic LHRH analog AN-152 as well as GHRH antagonist MIA-602. ('GHRH', 'Gene', (208, 212)) ('somatostatin', 'Gene', '20604', (41, 53)) ('somatostatin', 'Gene', '20604', (100, 112)) ('AN', 'Chemical', 'MESH:D000431', (121, 123)) ('AN', 'Chemical', 'MESH:D000431', (190, 192)) ('AN-238', 'Var', (132, 138)) ('AN', 'Chemical', 'MESH:D000431', (132, 134)) ('somatostatin', 'Gene', (100, 112)) ('GHRH', 'Gene', '14601', (208, 212)) ('somatostatin', 'Gene', (41, 53)) 46370 23267837 Furthermore, mediated by activation of caspases 3 and 7, AN-152 (10-7-10-8 mol/l) directed MPC into programmed cell death (24h-72h) (Fig. ('programmed cell', 'CPA', (100, 115)) ('AN-152', 'Var', (57, 63)) ('MPC', 'Chemical', '-', (91, 94)) ('AN', 'Chemical', 'MESH:D000431', (57, 59)) 46375 23267837 Finally, since also the GHRH receptor was abundantly expressed on MTT cells we were interested to studied possible anti-tumor effects mediated by the GHRH antagonist MIA-602 and could show that MIA-602 decreased MTT cell survival only at a rather high concentration of 10-5 mol/l after 2-3 days (Fig. ('MIA-602', 'Var', (194, 201)) ('GHRH receptor', 'Gene', (24, 37)) ('MTT', 'Chemical', '-', (66, 69)) ('GHRH receptor', 'Gene', '14602', (24, 37)) ('GHRH', 'Gene', '14601', (24, 28)) ('MTT', 'Chemical', '-', (212, 215)) ('decreased', 'NegReg', (202, 211)) ('tumor', 'Disease', 'MESH:D009369', (120, 125)) ('GHRH', 'Gene', (150, 154)) ('tumor', 'Phenotype', 'HP:0002664', (120, 125)) ('GHRH', 'Gene', (24, 28)) ('MTT cell survival', 'CPA', (212, 229)) ('tumor', 'Disease', (120, 125)) ('GHRH', 'Gene', '14601', (150, 154)) 46376 23267837 Studies on the possible effects of the targeted cytotoxic somatostatin analogs AN-162 and AN-238 on MTT cells are still ongoing. ('MTT', 'Chemical', '-', (100, 103)) ('AN-162', 'Var', (79, 85)) ('AN', 'Chemical', 'MESH:D000431', (79, 81)) ('AN-238', 'Var', (90, 96)) ('AN', 'Chemical', 'MESH:D000431', (90, 92)) ('somatostatin', 'Gene', '20604', (58, 70)) ('somatostatin', 'Gene', (58, 70)) 46384 23267837 Also our present study adds further evidence for significant anti-tumor effects mediated by the cytotoxic somatostatin analogs AN-162 and AN-238 on pheochromocytoma cells in vitro. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('AN-162', 'Var', (127, 133)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (148, 164)) ('tumor', 'Disease', (66, 71)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (148, 164)) ('somatostatin', 'Gene', '20604', (106, 118)) ('AN', 'Chemical', 'MESH:D000431', (127, 129)) ('AN-238', 'Var', (138, 144)) ('AN', 'Chemical', 'MESH:D000431', (138, 140)) ('somatostatin', 'Gene', (106, 118)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) ('pheochromocytoma', 'Disease', (148, 164)) 46387 23267837 Additionally, in experimental models, analogs of LHRH have been shown to exert direct effects on human breast and bladder cancers through specific LHRH receptors, while non targeted doxorubicin was not as effective and more toxic. ('effects', 'Reg', (86, 93)) ('LHRH receptors', 'Protein', (147, 161)) ('LHRH', 'Gene', (49, 53)) ('breast', 'Disease', (103, 109)) ('bladder cancers', 'Phenotype', 'HP:0009725', (114, 129)) ('human', 'Species', '9606', (97, 102)) ('doxorubicin', 'Chemical', 'MESH:D004317', (182, 193)) ('cancers', 'Phenotype', 'HP:0002664', (122, 129)) ('analogs', 'Var', (38, 45)) ('bladder cancers', 'Disease', 'MESH:D001749', (114, 129)) ('cancer', 'Phenotype', 'HP:0002664', (122, 128)) ('bladder cancers', 'Disease', (114, 129)) 46392 23267837 In our study, we especially focused on MIA-602 and found significant reductions in cell viability on both MPC and MTT cells. ('MIA-602', 'Var', (39, 46)) ('MTT', 'Chemical', '-', (114, 117)) ('cell viability', 'CPA', (83, 97)) ('reductions', 'NegReg', (69, 79)) ('MPC', 'Chemical', '-', (106, 109)) 46393 23267837 Furthermore, just recently, MIA-602 has been shown to significantly decrease cell viability and well known parameters of tumor spreading on three different human cancers. ('cancers', 'Disease', 'MESH:D009369', (162, 169)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('cancers', 'Disease', (162, 169)) ('cancers', 'Phenotype', 'HP:0002664', (162, 169)) ('decrease', 'NegReg', (68, 76)) ('tumor', 'Disease', (121, 126)) ('MIA-602', 'Var', (28, 35)) ('cancer', 'Phenotype', 'HP:0002664', (162, 168)) ('human', 'Species', '9606', (156, 161)) ('cell viability', 'CPA', (77, 91)) ('tumor', 'Disease', 'MESH:D009369', (121, 126)) 46412 19124817 We report the effect of intravenous administration of low-osmolar contrast during CT on plasma catecholamine release, blood pressure, and heart rate in patients with and without pheochromocytoma, to determine whether it induces catecholamine release that increases blood pressure or heart rate. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (178, 194)) ('heart rate', 'MPA', (283, 293)) ('blood pressure', 'MPA', (118, 132)) ('plasma catecholamine release', 'MPA', (88, 116)) ('catecholamine release', 'MPA', (228, 249)) ('increases', 'PosReg', (255, 264)) ('induces', 'Reg', (220, 227)) ('pheochromocytoma', 'Disease', (178, 194)) ('increases blood pressure', 'Phenotype', 'HP:0032263', (255, 279)) ('catecholamine', 'Chemical', 'MESH:D002395', (228, 241)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (178, 194)) ('low-osmolar', 'Var', (54, 65)) ('blood pressure', 'MPA', (265, 279)) ('catecholamine', 'Chemical', 'MESH:D002395', (95, 108)) ('patients', 'Species', '9606', (152, 160)) 46453 22584711 Over-representation of the G12S polymorphism of the SDHD gene in patients with MEN2A syndrome To evaluate whether germline variants of the succinate dehydrogenase genes might be phenotypic modifiers in patients with multiple endocrine neoplasia type 2. ('SDHD', 'Gene', '6392', (52, 56)) ('G12S', 'Var', (27, 31)) ('MEN2A', 'Gene', (79, 84)) ('MEN2A', 'Gene', '5979', (79, 84)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (216, 251)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (225, 244)) ('patients', 'Species', '9606', (202, 210)) ('neoplasia', 'Phenotype', 'HP:0002664', (235, 244)) ('multiple endocrine neoplasia type 2', 'Disease', (216, 251)) ('patients', 'Species', '9606', (65, 73)) ('G12S', 'Mutation', 'rs34677591', (27, 31)) ('SDHD', 'Gene', (52, 56)) 46454 22584711 Mutations of genes encoding subunits of the succinate dehydrogenase are associated with hereditary paraganglioma/pheochromocytoma syndrome. ('hereditary paraganglioma', 'Disease', (88, 112)) ('hereditary paraganglioma', 'Disease', 'MESH:D010235', (88, 112)) ('paraganglioma', 'Phenotype', 'HP:0002668', (99, 112)) ('associated', 'Reg', (72, 82)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (113, 129)) ('Mutations', 'Var', (0, 9)) ('pheochromocytoma syndrome', 'Disease', 'MESH:D010673', (113, 138)) ('pheochromocytoma syndrome', 'Disease', (113, 138)) 46455 22584711 Pheochromocytoma is one of the main manifestations of multiple endocrine neoplasia type 2 caused by germline mutation of the rearranged during transfection proto-oncogene. ('Pheochromocytoma', 'Disease', (0, 16)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (63, 82)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (54, 89)) ('neoplasia', 'Phenotype', 'HP:0002664', (73, 82)) ('multiple endocrine neoplasia type 2', 'Disease', (54, 89)) ('rearranged during transfection', 'Gene', '5979', (125, 155)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('germline mutation', 'Var', (100, 117)) ('rearranged during transfection', 'Gene', (125, 155)) ('caused by', 'Reg', (90, 99)) 46456 22584711 Polymorphisms of the succinate dehydrogenase genes were analyzed in 77 rearranged during transfection mutation carriers, 47 patients with sporadic medullary thyroid cancer, 48 patients with sporadic Pheo, and 100 healthy individuals. ('patients', 'Species', '9606', (176, 184)) ('thyroid cancer', 'Disease', 'MESH:D013964', (157, 171)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (147, 171)) ('cancer', 'Phenotype', 'HP:0002664', (165, 171)) ('mutation', 'Var', (102, 110)) ('rearranged during transfection', 'Gene', (71, 101)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (157, 171)) ('thyroid cancer', 'Disease', (157, 171)) ('rearranged during transfection', 'Gene', '5979', (71, 101)) ('patients', 'Species', '9606', (124, 132)) 46461 22584711 No associations between G12S and age of manifestation, incidence of pheochromocytoma or hyperparathyroidism, or level of serum calcitonin were observed. ('pheochromocytoma or hyperparathyroidism', 'Disease', (68, 107)) ('pheochromocytoma or hyperparathyroidism', 'Disease', 'MESH:D010673', (68, 107)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (88, 107)) ('G12S', 'Var', (24, 28)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (68, 84)) ('G12S', 'Mutation', 'rs34677591', (24, 28)) 46462 22584711 The high prevalence of the G12S variant in patients with multiple endocrine neoplasia type 2A raises questions about its role as a genetic modifier, but this proposal remains to be established. ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (57, 92)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (66, 85)) ('G12S', 'Var', (27, 31)) ('multiple endocrine neoplasia type 2', 'Disease', (57, 92)) ('patients', 'Species', '9606', (43, 51)) ('neoplasia', 'Phenotype', 'HP:0002664', (76, 85)) ('G12S', 'Mutation', 'rs34677591', (27, 31)) 46464 22584711 Germline gain-of-function mutations of the RET proto-oncogene cause multiple endocrine neoplasia type 2 (MEN2), an autosomal dominantly inherited disease with an approximate prevalence of 2.5 per 100.000 in the general population. ('gain-of-function', 'PosReg', (9, 25)) ('RET', 'Gene', (43, 46)) ('neoplasia', 'Phenotype', 'HP:0002664', (87, 96)) ('autosomal dominantly inherited disease', 'Disease', (115, 153)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (68, 103)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (77, 96)) ('mutations', 'Var', (26, 35)) ('multiple endocrine neoplasia type 2', 'Disease', (68, 103)) ('autosomal dominantly inherited disease', 'Disease', 'MESH:D030342', (115, 153)) ('MEN', 'Species', '9606', (105, 108)) 46466 22584711 Several important genotype-phenotype associations have been determined; the most commonly affected codon, 634 (nearly 85% of MEN2A cases), frequently associates with Pheo and hyperparathyroidism, whereas mutations of codons 609, 611, 618, and 620 (accounting for 10-15% of MEN2A) usually associate with the milder form of MEN2 -. ('MEN2A', 'Gene', (273, 278)) ('MEN', 'Species', '9606', (273, 276)) ('associates with', 'Reg', (150, 165)) ('MEN2 -', 'Disease', (322, 328)) ('MEN', 'Species', '9606', (322, 325)) ('mutations', 'Var', (204, 213)) ('hyperparathyroidism', 'Disease', 'MESH:D006961', (175, 194)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (175, 194)) ('MEN2A', 'Gene', (125, 130)) ('MEN2A', 'Gene', '5979', (125, 130)) ('associate', 'Reg', (288, 297)) ('hyperparathyroidism', 'Disease', (175, 194)) ('MEN', 'Species', '9606', (125, 128)) ('MEN2A', 'Gene', '5979', (273, 278)) 46467 22584711 Hereditary paraganglioma/pheochromocytoma (PGL) syndrome is caused by the germline heterozygous mutations of the SDHx genes (SDHB, SDHC, SDHD, encoding subunits B, C and D, respectively) - and the newly identified SDH5 gene and TMEM127. ('SDHx', 'Chemical', '-', (113, 117)) ('SDHB', 'Gene', (125, 129)) ('SDHx', 'Gene', (113, 117)) ('SDH5', 'Gene', (214, 218)) ('Hereditary paraganglioma/pheochromocytoma (PGL) syndrome', 'Disease', 'MESH:D010235', (0, 56)) ('TMEM127', 'Gene', (228, 235)) ('TMEM127', 'Gene', '55654', (228, 235)) ('SDHD', 'Gene', (137, 141)) ('SDHD', 'Gene', '6392', (137, 141)) ('SDH5', 'Gene', '54949', (214, 218)) ('paraganglioma', 'Phenotype', 'HP:0002668', (11, 24)) ('SDHC', 'Gene', (131, 135)) ('caused', 'Reg', (60, 66)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (25, 41)) ('SDHC', 'Gene', '6391', (131, 135)) ('mutations', 'Var', (96, 105)) ('SDHB', 'Gene', '6390', (125, 129)) 46470 22584711 Accumulation of amino-acid coding polymorphisms (S163P in SDHB, G12S, and H50R in SDHD) has been found among patients with MTC, especially in those with familial tumors. ('H50R', 'Mutation', 'rs11214077', (74, 78)) ('G12S', 'Var', (64, 68)) ('SDHB', 'Gene', (58, 62)) ('MTC', 'Disease', (123, 126)) ('tumor', 'Phenotype', 'HP:0002664', (162, 167)) ('familial tumors', 'Disease', 'MESH:D009386', (153, 168)) ('patients', 'Species', '9606', (109, 117)) ('S163P', 'Var', (49, 54)) ('familial tumors', 'Disease', (153, 168)) ('S163P', 'Mutation', 'rs33927012', (49, 54)) ('G12S', 'Mutation', 'rs34677591', (64, 68)) ('SDHD', 'Gene', (82, 86)) ('SDHD', 'Gene', '6392', (82, 86)) ('H50R', 'Var', (74, 78)) ('tumors', 'Phenotype', 'HP:0002664', (162, 168)) ('SDHB', 'Gene', '6390', (58, 62)) 46472 22584711 These previous data may suggest a possible connection between SDHx polymorphisms and familial MTC and/or C-cell hyperplasia/hypercalcitoninemia; however, the occurrence of the SDHx variants among patients harboring germline RET mutations has not been previously examined. ('C-cell hyperplasia', 'Disease', 'MESH:C537418', (105, 123)) ('hyperplasia/hypercalcitoninemia', 'Disease', 'MESH:D006965', (112, 143)) ('variants', 'Var', (181, 189)) ('C-cell hyperplasia', 'Disease', (105, 123)) ('SDHx', 'Chemical', '-', (176, 180)) ('patients', 'Species', '9606', (196, 204)) ('SDHx', 'Gene', (62, 66)) ('hyperplasia/hypercalcitoninemia', 'Disease', (112, 143)) ('SDHx', 'Chemical', '-', (62, 66)) ('SDHx', 'Gene', (176, 180)) ('familial MTC', 'Disease', (85, 97)) 46473 22584711 Therefore, the aim of the present study was to investigate whether polymorphisms of the SDHx genes could influence clinical manifestations of the disease in a cohort of subjects harboring RET mutations. ('SDHx', 'Chemical', '-', (88, 92)) ('SDHx', 'Gene', (88, 92)) ('polymorphisms', 'Var', (67, 80)) ('influence', 'Reg', (105, 114)) 46474 22584711 In addition, we wanted to determine whether the prevalence of SDHx polymorphisms in patients with sporadic MTC, sporadic Pheo and healthy subjects might be different from that found in RET mutation carriers. ('SDHx', 'Chemical', '-', (62, 66)) ('SDHx', 'Gene', (62, 66)) ('polymorphisms', 'Var', (67, 80)) ('patients', 'Species', '9606', (84, 92)) 46477 22584711 In total, 77 patients with germline RET proto-oncogene mutations who were members of 21 unrelated families with MEN2 syndrome were identified by genetic screening at our center. ('MEN2 syndrome', 'Disease', 'MESH:D013577', (112, 125)) ('patients', 'Species', '9606', (13, 21)) ('MEN2 syndrome', 'Disease', (112, 125)) ('mutations', 'Var', (55, 64)) 46480 22584711 Total thyroidectomy was performed in all patients with germline RET mutation in the symptomatic group and was also offered to all individuals from the asymptomatic group. ('patients', 'Species', '9606', (41, 49)) ('germline', 'Var', (55, 63)) ('RET', 'Gene', (64, 67)) 46483 22584711 Pre-operative evaluation included medical history, physical examination, thyroid and abdominal ultrasonography, CT or magnetic resonance imaging (MRI), MIBG-scintigraphy, routine biochemical testing, serum calcitonin measurements, and mutation analysis of exons 10-14 of the RET gene. ('men', 'Species', '9606', (224, 227)) ('mutation analysis', 'Var', (235, 252)) ('RET', 'Gene', (275, 278)) ('MIBG', 'Chemical', '-', (152, 156)) 46487 22584711 The mutation analysis of RET exons 10-14 and the entire VHL, SDHB, and SDHD genes revealed no disease-causing mutations. ('VHL', 'Gene', (56, 59)) ('VHL', 'Gene', '7428', (56, 59)) ('SDHD', 'Gene', '6392', (71, 75)) ('SDHB', 'Gene', '6390', (61, 65)) ('mutation', 'Var', (4, 12)) ('SDHD', 'Gene', (71, 75)) ('SDHB', 'Gene', (61, 65)) 46488 22584711 Patients with confirmed VHL (five patients), SDHB (one patient), or SDHD (one patient) mutations were excluded from the study. ('VHL', 'Gene', '7428', (24, 27)) ('patient', 'Species', '9606', (78, 85)) ('SDHD', 'Gene', '6392', (68, 72)) ('SDHD', 'Gene', (68, 72)) ('Patients', 'Species', '9606', (0, 8)) ('patient', 'Species', '9606', (34, 41)) ('SDHB', 'Gene', '6390', (45, 49)) ('patients', 'Species', '9606', (34, 42)) ('VHL', 'Gene', (24, 27)) ('SDHB', 'Gene', (45, 49)) ('patient', 'Species', '9606', (55, 62)) ('mutations', 'Var', (87, 96)) 46489 22584711 Five patients were initially thought to have sporadic pheochromocytoma, but were later identified as having a disease-causing RET mutation and were included in the study as RET mutation carriers. ('patients', 'Species', '9606', (5, 13)) ('sporadic pheochromocytoma', 'Disease', 'MESH:D010673', (45, 70)) ('mutation', 'Var', (130, 138)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (54, 70)) ('sporadic pheochromocytoma', 'Disease', (45, 70)) ('RET', 'Gene', (126, 129)) 46491 22584711 Mutation analysis of the VHL, SDHB, and SDHD genes in cases of apparently sporadic Pheo were performed by direct sequencing of the entire coding region of the VHL, SDHB, and SDHD genes, as previously reported,, and large deletion analysis of the VHL, SDHB, SDHC, and SDHD genes performed using multiplex ligation probe amplification. ('SDHD', 'Gene', '6392', (40, 44)) ('VHL', 'Gene', '7428', (246, 249)) ('SDHB', 'Gene', '6390', (251, 255)) ('deletion', 'Var', (221, 229)) ('SDHC', 'Gene', (257, 261)) ('SDHD', 'Gene', (40, 44)) ('SDHB', 'Gene', '6390', (30, 34)) ('SDHB', 'Gene', '6390', (164, 168)) ('SDHD', 'Gene', '6392', (174, 178)) ('SDHB', 'Gene', (251, 255)) ('SDHD', 'Gene', '6392', (267, 271)) ('VHL', 'Gene', (25, 28)) ('SDHB', 'Gene', (30, 34)) ('SDHD', 'Gene', (174, 178)) ('VHL', 'Gene', (159, 162)) ('SDHB', 'Gene', (164, 168)) ('VHL', 'Gene', (246, 249)) ('SDHC', 'Gene', '6391', (257, 261)) ('SDHD', 'Gene', (267, 271)) ('VHL', 'Gene', '7428', (25, 28)) ('VHL', 'Gene', '7428', (159, 162)) 46492 22584711 The nucleotide change of G to A, which corresponds to the G12S polymorphism, results in the preservation of the BanI restriction cleavage site. ('BanI restriction cleavage site', 'MPA', (112, 142)) ('G12S', 'Var', (58, 62)) ('nucleotide change', 'Var', (4, 21)) ('G to A', 'Gene', (25, 31)) ('G12S', 'Mutation', 'rs34677591', (58, 62)) 46493 22584711 Therefore, digestion with the BanI restriction enzyme (New England BioLabs Inc., Ipswich, MA, USA) for 90 min at 37 C was performed after polymerase chain reaction (PCR) amplification of exon 1 of the SDHD gene for genotyping of RET mutation carriers, sporadic MTC patients, and 100 controls (Figure 1). ('SDHD', 'Gene', (201, 205)) ('SDHD', 'Gene', '6392', (201, 205)) ('RET', 'Disease', (229, 232)) ('mutation', 'Var', (233, 241)) ('patients', 'Species', '9606', (265, 273)) 46495 22584711 Eight of the 55 patients with MEN2A (15.5%) had the G12S variant, whereas it was absent in the MEN2B and FMTC groups. ('MEN2A', 'Gene', '5979', (30, 35)) ('MEN2B', 'Gene', '5979', (95, 100)) ('G12S', 'Mutation', 'rs34677591', (52, 56)) ('patients', 'Species', '9606', (16, 24)) ('G12S', 'Var', (52, 56)) ('MEN2A', 'Gene', (30, 35)) ('MEN2B', 'Gene', (95, 100)) 46497 22584711 No association between the G12S polymorphism of the SDHD gene and the incidence of Pheo or hyperparathyroidism in RET mutation carriers was observed, and the age of disease manifestation was similar in G12S carriers and in non-carriers (43+-9 versus 40+-3 years in probands and 29.6+-19.3 versus 32.5+-20.5 years in non-carriers). ('G12S', 'Mutation', 'rs34677591', (27, 31)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (91, 110)) ('SDHD', 'Gene', '6392', (52, 56)) ('G12S', 'Var', (202, 206)) ('G12S', 'Var', (27, 31)) ('hyperparathyroidism', 'Disease', (91, 110)) ('hyperparathyroidism', 'Disease', 'MESH:D006961', (91, 110)) ('G12S', 'Mutation', 'rs34677591', (202, 206)) ('Pheo', 'Disease', (83, 87)) ('SDHD', 'Gene', (52, 56)) 46498 22584711 Among probands with RET mutations, carriers of the G12S had higher serum calcitonin levels compared with those who did not carry the SDHD G12S variant (6,864+-11,111 versus 1,250+-932 pg/ml), but the difference was not significant. ('G12S', 'Mutation', 'rs34677591', (138, 142)) ('higher', 'PosReg', (60, 66)) ('G12S', 'Var', (51, 55)) ('SDHD', 'Gene', '6392', (133, 137)) ('higher serum calcitonin levels', 'Phenotype', 'HP:0003528', (60, 90)) ('SDHD', 'Gene', (133, 137)) ('mutations', 'Var', (24, 33)) ('serum calcitonin levels', 'MPA', (67, 90)) ('G12S', 'Mutation', 'rs34677591', (51, 55)) 46499 22584711 Among family members with RET mutations, serum calcitonin levels were similar in G12S carriers and non-carriers 436+-876 versus 393+-556 pg/ml) (Table 2). ('G12S', 'Mutation', 'rs34677591', (81, 85)) ('G12S', 'Var', (81, 85)) ('mutations', 'Var', (30, 39)) ('serum calcitonin levels', 'MPA', (41, 64)) 46501 22584711 showed that two RET variants (G691S and S904S) may modify the age of onset of MTC in family members; and Tamanaha et al. ('modify', 'Reg', (51, 57)) ('G691S', 'Mutation', 'rs1799939', (30, 35)) ('G691S', 'Var', (30, 35)) ('S904S', 'Var', (40, 45)) ('S904S', 'Mutation', 'rs1800863', (40, 45)) 46502 22584711 reported that two intronic polymorphisms of RET may modify the phenotype in a large family with G533C RET mutation, while Baumgartner-Parzer found that the L769L and the IVS14-24 may act as modifiers in some forms of hereditary and sporadic MTC. ('L769L', 'Mutation', 'rs1800861', (156, 161)) ('RET', 'Gene', (102, 105)) ('L769L', 'Var', (156, 161)) ('G533C', 'Var', (96, 101)) ('mutation', 'Var', (106, 114)) ('G533C', 'Mutation', 'rs75873440', (96, 101)) ('modify', 'Reg', (52, 58)) ('phenotype', 'MPA', (63, 72)) 46504 22584711 This latter study showed that of the several polymorphisms of genes encoding the RET protein, its co-receptors and ligands, only the synonymous polymorphism A432A of the RET gene associated weakly with tumor spectra in patients with MEN2A. ('RET', 'Gene', (170, 173)) ('A432A', 'Var', (157, 162)) ('tumor', 'Disease', (202, 207)) ('MEN2A', 'Gene', (233, 238)) ('MEN2A', 'Gene', '5979', (233, 238)) ('weakly', 'NegReg', (190, 196)) ('patients', 'Species', '9606', (219, 227)) ('tumor', 'Disease', 'MESH:D009369', (202, 207)) ('tumor', 'Phenotype', 'HP:0002664', (202, 207)) 46505 22584711 MEN2-related MTC RET variants have been analyzed as genetic susceptibility factors for the development of sporadic MTC: polymorphisms located in coding regions of RET, G691S, L769L, S836S, and S904S have been shown to be over-represented in patients with sporadic MTC - compared with the general population, but others were unable to confirm these associations,. ('S836S', 'Mutation', 'rs1800862', (182, 187)) ('over-represented', 'PosReg', (221, 237)) ('G691S', 'Mutation', 'rs1799939', (168, 173)) ('polymorphisms', 'Var', (120, 133)) ('L769L', 'Var', (175, 180)) ('MEN', 'Species', '9606', (0, 3)) ('patients', 'Species', '9606', (241, 249)) ('L769L', 'Mutation', 'rs1800861', (175, 180)) ('S904S', 'Var', (193, 198)) ('men', 'Species', '9606', (98, 101)) ('G691S', 'Var', (168, 173)) ('S904S', 'Mutation', 'rs1800863', (193, 198)) ('S836S', 'Var', (182, 187)) 46506 22584711 Germline mutations of SDHx genes encoding subunits of the mitochondrial complex II represent a genetic susceptibility for Pheo/PGL. ('Germline mutations', 'Var', (0, 18)) ('SDHx', 'Gene', (22, 26)) ('SDHx', 'Chemical', '-', (22, 26)) ('susceptibility', 'Reg', (103, 117)) ('Pheo/PGL', 'Disease', (122, 130)) 46508 22584711 reported a family with C-cell hyperplasia, a pre-cancerous state of MTC, who were proved to have the H50R variant of the SDHD gene. ('SDHD', 'Gene', (121, 125)) ('H50R', 'Var', (101, 105)) ('cancer', 'Phenotype', 'HP:0002664', (49, 55)) ('C-cell hyperplasia', 'Disease', (23, 41)) ('H50R', 'Mutation', 'rs11214077', (101, 105)) ('SDHD', 'Gene', '6392', (121, 125)) ('C-cell hyperplasia', 'Disease', 'MESH:C537418', (23, 41)) 46509 22584711 demonstrated an increased frequency of amino acid-coding SDHx polymorphisms in patients with sporadic and familial MTC. ('SDHx', 'Chemical', '-', (57, 61)) ('SDHx', 'Gene', (57, 61)) ('polymorphisms', 'Var', (62, 75)) ('patients', 'Species', '9606', (79, 87)) ('sporadic', 'Disease', (93, 101)) ('familial MTC', 'Disease', (106, 118)) 46510 22584711 In addition, a systemic evaluation of genetic variants of the SDHx genes among patients with sporadic MTC showed a significant association between the H50R variant and sporadic MTC in Spanish patients, although this observation was absent in an English cohort. ('sporadic MTC', 'Disease', (168, 180)) ('variant', 'Var', (156, 163)) ('H50R', 'Mutation', 'rs11214077', (151, 155)) ('patients', 'Species', '9606', (192, 200)) ('variants', 'Var', (46, 54)) ('SDHx', 'Gene', (62, 66)) ('H50R', 'Gene', (151, 155)) ('patients', 'Species', '9606', (79, 87)) ('SDHx', 'Chemical', '-', (62, 66)) 46511 22584711 Variants of the SDHx genes have been implicated in the pathogenesis of various endocrine and non-endocrine tumors, such as Merkel cell carcinoma, carcinoid, papillary thyroid cancer, and renal cell cancer found in patients with Cowden-like syndrome. ('Variants', 'Var', (0, 8)) ('patients', 'Species', '9606', (214, 222)) ('papillary thyroid cancer', 'Disease', 'MESH:D000077273', (157, 181)) ('SDHx', 'Chemical', '-', (16, 20)) ('Cowden-like syndrome', 'Disease', 'MESH:C567337', (228, 248)) ('carcinoid', 'Phenotype', 'HP:0100570', (146, 155)) ('carcinoid', 'Disease', (146, 155)) ('Merkel cell carcinoma', 'Disease', (123, 144)) ('cancer', 'Phenotype', 'HP:0002664', (175, 181)) ('carcinoma', 'Phenotype', 'HP:0030731', (135, 144)) ('tumors', 'Phenotype', 'HP:0002664', (107, 113)) ('cancer', 'Phenotype', 'HP:0002664', (198, 204)) ('endocrine', 'Disease', (79, 88)) ('non-endocrine tumors', 'Disease', (93, 113)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('papillary thyroid cancer', 'Disease', (157, 181)) ('Cowden-like syndrome', 'Disease', (228, 248)) ('SDHx', 'Gene', (16, 20)) ('implicated', 'Reg', (37, 47)) ('renal cell cancer', 'Disease', 'MESH:C538614', (187, 204)) ('renal cell cancer', 'Disease', (187, 204)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (167, 181)) ('Merkel cell carcinoma', 'Disease', 'MESH:D015266', (123, 144)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (157, 181)) ('carcinoid', 'Disease', 'MESH:D002276', (146, 155)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (187, 204)) ('non-endocrine tumors', 'Disease', 'MESH:C536126', (93, 113)) 46512 22584711 In the present study, we found that the G12S variant was significantly over-represented among RET mutation carriers compared with sporadic MTC, sporadic Pheo, or control individuals. ('over-represented', 'PosReg', (71, 87)) ('RET', 'Gene', (94, 97)) ('G12S', 'Mutation', 'rs34677591', (40, 44)) ('G12S', 'Var', (40, 44)) 46514 22584711 detected G12S in a patient with MEN2B harboring the M918T mutation of the RET gene. ('patient', 'Species', '9606', (19, 26)) ('RET', 'Gene', (74, 77)) ('M918T', 'Var', (52, 57)) ('G12S', 'Mutation', 'rs34677591', (9, 13)) ('G12S', 'Var', (9, 13)) ('MEN2B', 'Gene', (32, 37)) ('M918T', 'Mutation', 'rs74799832', (52, 57)) ('MEN2B', 'Gene', '5979', (32, 37)) 46515 22584711 Interestingly, the prevalence of alterations of the SDHx genes in patients with RET mutations was similar in our study and the study of Montani et al.. ('mutations', 'Var', (84, 93)) ('SDHx genes', 'Gene', (52, 62)) ('patients', 'Species', '9606', (66, 74)) ('SDHx', 'Chemical', '-', (52, 56)) 46520 22584711 More importantly, in our study, the high incidence of the G12S variant among RET carriers, especially in those with the MEN2A phenotype, raised the possibility that this variant may have a role in the phenotypic modulation of the disease. ('MEN2A', 'Gene', (120, 125)) ('MEN2A', 'Gene', '5979', (120, 125)) ('G12S', 'Var', (58, 62)) ('role', 'Reg', (189, 193)) ('G12S', 'Mutation', 'rs34677591', (58, 62)) 46523 22584711 reported an increased prevalence of intronic SDHB polymorphisms among patients with malignant Pheo compared with patients with benign tumors. ('patients', 'Species', '9606', (70, 78)) ('tumors', 'Phenotype', 'HP:0002664', (134, 140)) ('benign tumors', 'Disease', (127, 140)) ('patients', 'Species', '9606', (113, 121)) ('polymorphisms', 'Var', (50, 63)) ('malignant Pheo', 'Disease', (84, 98)) ('SDHB', 'Gene', '6390', (45, 49)) ('tumor', 'Phenotype', 'HP:0002664', (134, 139)) ('SDHB', 'Gene', (45, 49)) ('benign tumors', 'Disease', 'MESH:D009369', (127, 140)) ('intronic', 'Protein', (36, 44)) 46524 22584711 In conclusion, we found a significantly higher prevalence of the G12S variant of the SDHD gene among germline RET mutation carriers presenting with MEN2A compared with the control group. ('higher', 'PosReg', (40, 46)) ('MEN2A', 'Gene', (148, 153)) ('MEN2A', 'Gene', '5979', (148, 153)) ('SDHD', 'Gene', '6392', (85, 89)) ('G12S', 'Var', (65, 69)) ('SDHD', 'Gene', (85, 89)) ('G12S', 'Mutation', 'rs34677591', (65, 69)) 46527 32117073 Catecholamine excess can lead to a kind of cardiomyopathy similar to that seen in tako-tsubo syndrome (TTS). ('cardiomyopathy', 'Disease', (43, 57)) ('Catecholamine', 'Chemical', 'MESH:D002395', (0, 13)) ('Catecholamine excess', 'Phenotype', 'HP:0003334', (0, 20)) ('tako-tsubo syndrome', 'Disease', (82, 101)) ('Catecholamine', 'Var', (0, 13)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (43, 57)) ('lead to', 'Reg', (25, 32)) ('tsubo syndrome', 'Phenotype', 'HP:0030824', (87, 101)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (43, 57)) ('TTS', 'Disease', 'MESH:D054549', (103, 106)) ('TTS', 'Disease', (103, 106)) ('tako-tsubo syndrome', 'Disease', 'MESH:D054549', (82, 101)) 46552 32117073 The initial laboratory work-up showed: CK-MB 58.13 mug/L (normal <2.88), high-sensitivity Troponin I 1754 ng/L (normal <14), BNP 2623 pg/mL (normal <100), corroborating the diagnosis of acute myocardial infarction. ('acute myocardial infarction', 'Disease', 'MESH:D009203', (186, 213)) ('high-sensitivity Troponin I', 'MPA', (73, 100)) ('BNP', 'Gene', (125, 128)) ('CK-MB', 'Var', (39, 44)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (192, 213)) ('acute myocardial infarction', 'Disease', (186, 213)) ('BNP', 'Gene', '4879', (125, 128)) 46559 32117073 A 24 h urine collection was performed and revealed high metanephrine (3795 mug/24 h, normal <350) and normetanephrine (2172 mug/24 h, normal <600) levels. ('normetanephrine', 'MPA', (102, 117)) ('metanephrine', 'MPA', (56, 68)) ('metanephrine', 'Chemical', 'MESH:D008676', (56, 68)) ('normetanephrine', 'Chemical', 'MESH:D009647', (102, 117)) ('2172', 'Var', (119, 123)) ('metanephrine', 'Chemical', 'MESH:D008676', (105, 117)) 46587 32117073 The most common germline mutations associated with familial pheochromocytoma are: REarranged during Transfection (RET) proto-oncogene, von Hippel-Lindau gene (VHL), neurofibromatosis type 1 gene (NF1), genes encoding four succinate dehydrogenase complex subunits (SDHx; i.e., SDHA, SDHB, SDHC, and SDHD genes), succinate dehydrogenase complex assembly factor 2 gene (SDHAF2), transmembrane protein 127 gene (TMEM 127), and myc-associated factor (MAX). ('SDHC', 'Gene', '6391', (288, 292)) ('transmembrane protein 127 gene', 'Gene', (376, 406)) ('SDHA', 'Gene', '6389', (367, 371)) ('neurofibromatosis type 1', 'Gene', (165, 189)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', (311, 360)) ('RET', 'Gene', (114, 117)) ('NF1', 'Gene', '4763', (196, 199)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (165, 182)) ('familial pheochromocytoma', 'Disease', (51, 76)) ('SDHAF2', 'Gene', '54949', (367, 373)) ('SDHAF2', 'Gene', (367, 373)) ('mutations', 'Var', (25, 34)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (60, 76)) ('NF1', 'Gene', (196, 199)) ('SDHA', 'Gene', (276, 280)) ('SDHC', 'Gene', (288, 292)) ('SDHB', 'Gene', '6390', (282, 286)) ('VHL', 'Gene', '7428', (159, 162)) ('neurofibromatosis type 1', 'Gene', '4763', (165, 189)) ('SDHA', 'Gene', '6389', (276, 280)) ('von Hippel-Lindau', 'Disease', (135, 152)) ('REarranged during Transfection', 'Gene', '5979', (82, 112)) ('SDHD', 'Gene', '6392', (298, 302)) ('VHL', 'Gene', (159, 162)) ('TMEM 127', 'Gene', '55654', (408, 416)) ('REarranged during Transfection', 'Gene', (82, 112)) ('SDHB', 'Gene', (282, 286)) ('RET', 'Gene', '5979', (114, 117)) ('transmembrane protein 127 gene', 'Gene', '55654', (376, 406)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', '54949', (311, 360)) ('associated', 'Reg', (35, 45)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (51, 76)) ('SDHD', 'Gene', (298, 302)) ('TMEM 127', 'Gene', (408, 416)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (135, 152)) ('SDHA', 'Gene', (367, 371)) 46588 32117073 Furthermore, cases of biochemically silent abdominal pheochromocytomas/PPGLs in individuals harboring the SDHB gene mutations have been reported. ('abdominal pheochromocytomas', 'Disease', (43, 70)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (53, 70)) ('abdominal pheochromocytomas', 'Disease', 'MESH:D010673', (43, 70)) ('SDHB', 'Gene', '6390', (106, 110)) ('mutations', 'Var', (116, 125)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (53, 69)) ('SDHB', 'Gene', (106, 110)) 46620 32090084 In recent years, genetic changes in PCPG have received increasing attention, and mutations or loss of genes encoding succinate dehydrogenase (SDH) are clinically important genetic changes, which are associated with the increased metastatic rate of human PCPG. ('associated', 'Reg', (199, 209)) ('SDH', 'Gene', '6390', (142, 145)) ('human', 'Species', '9606', (248, 253)) ('succinate dehydrogenase', 'Gene', '6390', (117, 140)) ('loss', 'NegReg', (94, 98)) ('succinate dehydrogenase', 'Gene', (117, 140)) ('metastatic rate', 'CPA', (229, 244)) ('SDH', 'Gene', (142, 145)) ('mutations', 'Var', (81, 90)) 46621 32090084 It has been proved that the pathogenesis of nonfamilial PCPG involves SDHB mutation-associated PCPG pro-cadherin gamma-C3 (PCDHGC3) gene promoter methylation as well as EPAS1 mutations encoding HIF2alpha. ('EPAS1', 'Gene', (169, 174)) ('SDHB', 'Gene', '6390', (70, 74)) ('nonfamilial PCPG', 'Disease', (44, 60)) ('SDHB', 'Gene', (70, 74)) ('mutation-associated', 'Reg', (75, 94)) ('HIF2alpha', 'Gene', (194, 203)) ('mutations', 'Var', (175, 184)) ('PCDHGC3', 'Gene', (123, 130)) ('EPAS1', 'Gene', '2034', (169, 174)) ('PCDHGC3', 'Gene', '5098', (123, 130)) ('HIF2alpha', 'Gene', '2034', (194, 203)) 46625 32090084 As depicted in Figure 5, the survival analysis of these hub genes by using Starbase database revealed that PCPG patients with a high expression of BUB1, BUB1B, TTK, CENPA, or NDC80 had shorter survival time and higher risk of death (P < 0.05 and hazard ratio >1). ('NDC80', 'Gene', (175, 180)) ('shorter', 'NegReg', (185, 192)) ('death', 'Disease', 'MESH:D003643', (226, 231)) ('death', 'Disease', (226, 231)) ('TTK', 'Gene', (160, 163)) ('BUB1B', 'Gene', (153, 158)) ('high', 'Var', (128, 132)) ('CENPA', 'Gene', (165, 170)) ('survival time', 'CPA', (193, 206)) ('BUB1', 'Gene', (147, 151)) 46627 32090084 We further showed that the patients with a high expression of genes in the salmon module had an earlier onset age, and the eigengene of the salmon module was highly correlated with the metastasis as well as malignancy of tumors. ('high', 'Var', (43, 47)) ('malignancy of tumors', 'Disease', 'MESH:D009369', (207, 227)) ('tumor', 'Phenotype', 'HP:0002664', (221, 226)) ('tumors', 'Phenotype', 'HP:0002664', (221, 227)) ('malignancy of tumors', 'Disease', (207, 227)) ('metastasis', 'CPA', (185, 195)) ('correlated', 'Reg', (165, 175)) 46693 30352425 In 16.2% of iPPGL, mutations in susceptibility genes were detected, although this proportion was lower than that in fPPGL (60.9%) and sPPGL (21.5%). ('detected', 'Reg', (58, 66)) ('iPPGL', 'Chemical', '-', (12, 17)) ('mutations', 'Var', (19, 28)) ('iPPGL', 'Disease', (12, 17)) ('fPPGL', 'Chemical', '-', (116, 121)) 46696 30352425 Pheochromocytoma/paraganglioma discovered by imaging are often symptomatic and carry a significant proportion of germline mutations in susceptibility genes. ('Pheochromocytoma/paraganglioma', 'Disease', (0, 30)) ('paraganglioma', 'Phenotype', 'HP:0002668', (17, 30)) ('germline mutations', 'Var', (113, 131)) ('Pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (0, 30)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) 46708 30352425 To date, at least 16 genes have been identified to be responsible for hereditary PPGLs and exome sequencing approaches have defined the occurrence of somatic mutations in candidate genes that partly overlap with those found as germline variants. ('PPGLs', 'Chemical', '-', (81, 86)) ('mutations', 'Var', (158, 167)) ('PPGLs', 'Disease', (81, 86)) 46742 30352425 Tumor volume (median, range) in iPPGL patients was 35.9 mL (0.9-904.3 mL), which was significantly larger in comparison to the fPPGL group (12.1 mL, 0.3-296.7 mL; P = 0.003, Fig. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('iPPGL', 'Var', (32, 37)) ('fPPGL', 'Chemical', '-', (127, 132)) ('iPPGL', 'Chemical', '-', (32, 37)) ('larger', 'PosReg', (99, 105)) ('patients', 'Species', '9606', (38, 46)) 46750 30352425 All five of the NF1 patients had syndromic clinical features and one of the patients with SDHB mutation had a history of clear cell renal carcinoma so first suspicion had been a VHL mutation. ('NF1', 'Gene', (16, 19)) ('patients', 'Species', '9606', (76, 84)) ('SDHB', 'Gene', '6390', (90, 94)) ('carcinoma', 'Phenotype', 'HP:0030731', (138, 147)) ('SDHB', 'Gene', (90, 94)) ('NF1', 'Gene', '4763', (16, 19)) ('clear cell renal carcinoma', 'Disease', 'MESH:C538614', (121, 147)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (132, 147)) ('syndromic', 'Disease', (33, 42)) ('clear cell renal carcinoma', 'Disease', (121, 147)) ('VHL', 'Gene', (178, 181)) ('patients', 'Species', '9606', (20, 28)) ('syndromic', 'Disease', 'MESH:D013577', (33, 42)) ('VHL', 'Gene', '7428', (178, 181)) ('mutation', 'Var', (95, 103)) 46782 30352425 Specifically, patients with NF1 mutations were recommended until very recently, to undergo screening for PPGLs only when additional symptoms raised the suspicion of catecholamine excess. ('NF1', 'Gene', '4763', (28, 31)) ('catecholamine', 'Chemical', 'MESH:D002395', (165, 178)) ('PPGLs', 'Chemical', '-', (105, 110)) ('catecholamine excess', 'MPA', (165, 185)) ('PPGLs', 'Gene', (105, 110)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (165, 185)) ('mutations', 'Var', (32, 41)) ('patients', 'Species', '9606', (14, 22)) ('NF1', 'Gene', (28, 31)) 46786 30352425 Within the surveillance group, the prevalence of malignancy was the highest, which likely reflects the large proportion of patients with SDHB mutations. ('mutations', 'Var', (142, 151)) ('malignancy', 'Disease', 'MESH:D009369', (49, 59)) ('malignancy', 'Disease', (49, 59)) ('patients', 'Species', '9606', (123, 131)) ('SDHB', 'Gene', '6390', (137, 141)) ('SDHB', 'Gene', (137, 141)) 46800 29779047 PASS and GAPP were applied on 41 PCCs; 13 PCCs were diagnosed in ten multiple endocrine neoplasia type 2A (MEN 2A) patients carrying established germline RET proto-oncogene mutations, as well as 28 assumed sporadic PCCs. ('RET', 'Gene', (154, 157)) ('multiple endocrine neoplasia type 2A', 'Gene', (69, 105)) ('multiple endocrine neoplasia type 2A', 'Gene', '5979', (69, 105)) ('MEN 2A', 'Gene', (107, 113)) ('PCCs', 'Phenotype', 'HP:0002666', (42, 46)) ('PCCs', 'Phenotype', 'HP:0002666', (33, 37)) ('GAPP', 'Chemical', '-', (9, 13)) ('PCCs', 'Phenotype', 'HP:0002666', (215, 219)) ('PCC', 'Gene', (42, 45)) ('neoplasia', 'Phenotype', 'HP:0002664', (88, 97)) ('PCC', 'Gene', (215, 218)) ('patients', 'Species', '9606', (115, 123)) ('PCC', 'Gene', (33, 36)) ('PCC', 'Gene', '1421', (42, 45)) ('PCC', 'Gene', '1421', (215, 218)) ('mutations', 'Var', (173, 182)) ('PCC', 'Gene', '1421', (33, 36)) ('RET', 'Gene', '5979', (154, 157)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (78, 97)) ('MEN 2A', 'Gene', '5979', (107, 113)) 46802 29779047 In addition, 7/13 tumors (54%) exhibited GAPP scores >= 3, indicative of a "moderately differentiated type" with risk of future recurrence. ('GAPP', 'Chemical', '-', (41, 45)) ('tumors', 'Disease', (18, 24)) ('tumors', 'Disease', 'MESH:D009369', (18, 24)) ('tumors', 'Phenotype', 'HP:0002664', (18, 24)) ('GAPP scores', 'Var', (41, 52)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 46816 29779047 We therefore sought to determine the PASS and GAPP score ranges and the follow-up for PCCs with established constitutional RET mutations at our institution, to investigate whether these classification systems can predict patients at risk for malignancy in MEN 2A patients. ('MEN 2A', 'Gene', (256, 262)) ('patients', 'Species', '9606', (221, 229)) ('MEN 2A', 'Gene', '5979', (256, 262)) ('patients', 'Species', '9606', (263, 271)) ('RET', 'Gene', (123, 126)) ('malignancy', 'Disease', 'MESH:D009369', (242, 252)) ('PCC', 'Gene', (86, 89)) ('RET', 'Gene', '5979', (123, 126)) ('PCCs', 'Phenotype', 'HP:0002666', (86, 90)) ('mutations', 'Var', (127, 136)) ('GAPP', 'Chemical', '-', (46, 50)) ('malignancy', 'Disease', (242, 252)) ('PCC', 'Gene', '1421', (86, 89)) 46817 29779047 We screened our clinical databases and identified 10 patients with 13 resected PCCs during the period 1987-2017, all patients harboring RET constitutional mutations (c.1900T>C in two, c.1858T>C in one, and c.1900T>G in the remaining seven patients) (Table 1). ('RET', 'Gene', '5979', (136, 139)) ('PCC', 'Gene', '1421', (79, 82)) ('c.1858T>C', 'Var', (184, 193)) ('patients', 'Species', '9606', (53, 61)) ('c.1900T>G', 'Mutation', 'rs75076352', (206, 215)) ('patients', 'Species', '9606', (239, 247)) ('c.1900T>C', 'Var', (166, 175)) ('c.1900T>G', 'Var', (206, 215)) ('RET', 'Gene', (136, 139)) ('PCC', 'Gene', (79, 82)) ('PCCs', 'Phenotype', 'HP:0002666', (79, 83)) ('c.1900T>C', 'Mutation', 'rs75076352', (166, 175)) ('patients', 'Species', '9606', (117, 125)) ('c.1858T>C', 'Mutation', 'rs77316810', (184, 193)) 46836 29779047 Using the GAPP algorithm, seven out of 13 (54%) MEN 2A PCCs displayed GAPP scores >= 3, thereby establishing them as "moderately differentiated" with a significant risk of future relapse or metastatic disease (Table 1, Fig. ('PCC', 'Gene', '1421', (55, 58)) ('GAPP', 'Chemical', '-', (10, 14)) ('MEN 2A', 'Gene', '5979', (48, 54)) ('MEN 2A', 'Gene', (48, 54)) ('PCC', 'Gene', (55, 58)) ('PCCs', 'Phenotype', 'HP:0002666', (55, 59)) ('GAPP', 'Chemical', '-', (70, 74)) ('metastatic disease', 'CPA', (190, 208)) ('GAPP scores', 'Var', (70, 81)) 46858 29779047 Since MEN 2A PCCs harbor RET proto-oncogene mutations and express a specific hypoxia gene expression signature, this common genetic profile might in theory result in distinct histological patterns for subsets of cases. ('result', 'Reg', (156, 162)) ('RET', 'Gene', '5979', (25, 28)) ('hypoxia', 'Disease', (77, 84)) ('PCCs', 'Phenotype', 'HP:0002666', (13, 17)) ('PCC', 'Gene', (13, 16)) ('RET', 'Gene', (25, 28)) ('mutations', 'Var', (44, 53)) ('proto-oncogene', 'Gene', (29, 43)) ('MEN 2A', 'Gene', '5979', (6, 12)) ('MEN 2A', 'Gene', (6, 12)) ('PCC', 'Gene', '1421', (13, 16)) ('hypoxia', 'Disease', 'MESH:D000860', (77, 84)) 46860 29779047 The significant association between high PASS scores and MEN 2A PCCs was further substantiated when a similar connotation was seen when applying the GAPP algorithm. ('high PASS scores', 'Var', (36, 52)) ('MEN 2A', 'Gene', '5979', (57, 63)) ('PCC', 'Gene', (64, 67)) ('PCCs', 'Phenotype', 'HP:0002666', (64, 68)) ('PCC', 'Gene', '1421', (64, 67)) ('GAPP', 'Chemical', '-', (149, 153)) ('MEN 2A', 'Gene', (57, 63)) 46867 29779047 The majority (9/13) of MEN 2A-related PCCs in our cohort have been previously screened for somatic SDHB mutations, and all nine cases demonstrated wild-type sequences. ('mutations', 'Var', (104, 113)) ('PCC', 'Gene', '1421', (38, 41)) ('MEN 2A', 'Gene', '5979', (23, 29)) ('MEN 2A', 'Gene', (23, 29)) ('SDHB', 'Gene', '6390', (99, 103)) ('PCC', 'Gene', (38, 41)) ('PCCs', 'Phenotype', 'HP:0002666', (38, 42)) ('SDHB', 'Gene', (99, 103)) 46868 29779047 This would suggest that SDHB mutations are uncommonly found among MEN 2A PCCs and could therefore support the notion that the vast majority of these lesions are indeed benign:although endowed with high PASS and GAPP scores. ('PCC', 'Gene', '1421', (73, 76)) ('mutations', 'Var', (29, 38)) ('MEN 2A', 'Gene', '5979', (66, 72)) ('MEN 2A', 'Gene', (66, 72)) ('PCC', 'Gene', (73, 76)) ('PCCs', 'Phenotype', 'HP:0002666', (73, 77)) ('SDHB', 'Gene', '6390', (24, 28)) ('SDHB', 'Gene', (24, 28)) ('GAPP', 'Chemical', '-', (211, 215)) 46870 29779047 Patients harboring a mutation known to be accountable for development of PCC must be followed up lifelong regarding PCC, with biochemical evaluation at least yearly and adrenal imaging either based on positive biochemistry, or at individualized intervals. ('PCC', 'Gene', '1421', (73, 76)) ('PCC', 'Gene', (116, 119)) ('mutation', 'Var', (21, 29)) ('Patients', 'Species', '9606', (0, 8)) ('PCC', 'Gene', (73, 76)) ('PCC', 'Gene', '1421', (116, 119)) 46917 29423169 Chemotherapy and I131-MIBG have also been used therapeutically in malignant paraganglioma. ('malignant paraganglioma', 'Disease', 'MESH:C565335', (66, 89)) ('I131-MIBG', 'Var', (17, 26)) ('paraganglioma', 'Phenotype', 'HP:0002668', (76, 89)) ('malignant paraganglioma', 'Disease', (66, 89)) 47003 28724929 As a result, non-selective alpha blockade can lead to persistent intraoperative hypotension requiring fluid therapy and continuous catecholamine infusion, although it works better to control hypertensive crises. ('lead to', 'Reg', (46, 53)) ('intraoperative hypotension', 'Disease', (65, 91)) ('hypotension', 'Phenotype', 'HP:0002615', (80, 91)) ('intraoperative hypotension', 'Disease', 'MESH:D007022', (65, 91)) ('hypertensive crises', 'Phenotype', 'HP:0100735', (191, 210)) ('hypertensive', 'Disease', 'MESH:D006973', (191, 203)) ('catecholamine', 'Chemical', 'MESH:D002395', (131, 144)) ('hypertensive', 'Disease', (191, 203)) ('non-selective', 'Var', (13, 26)) 47004 28724929 So far, several studies have confirmed the relationship between phenoxybenzamine and perioperative hypotension in patients with pheochromocytoma. ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (64, 80)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (128, 144)) ('hypotension', 'Disease', 'MESH:D007022', (99, 110)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (128, 144)) ('phenoxybenzamine', 'Var', (64, 80)) ('hypotension', 'Disease', (99, 110)) ('patients', 'Species', '9606', (114, 122)) ('hypotension', 'Phenotype', 'HP:0002615', (99, 110)) ('pheochromocytoma', 'Disease', (128, 144)) 47052 28476870 Measurements of plasma methoxytyramine have been introduced for identifying patients with metastatic PPGLs, HNPGLs and tumors due to mutations of genes encoding succinate dehydrogenase subunits. ('tumors', 'Phenotype', 'HP:0002664', (119, 125)) ('patients', 'Species', '9606', (76, 84)) ('metastatic PPGLs', 'Disease', (90, 106)) ('HNPGLs', 'Phenotype', 'HP:0002864', (108, 114)) ('HNPGL', 'Phenotype', 'HP:0002864', (108, 113)) ('mutations', 'Var', (133, 142)) ('HNPGLs and tumors', 'Disease', 'MESH:D009369', (108, 125)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('men', 'Species', '9606', (7, 10)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (23, 38)) ('PPGLs', 'Chemical', '-', (101, 106)) 47092 28476870 Plasma concentrations of methoxytyramine and metanephrine were respectively increased above UCs in 45.5% and 53.5% of patients with PPGLs and 31.6% and none of the patients with HNPGLs, compared to 1.1% and 0.4% of patients without tumors (Fig. ('patients', 'Species', '9606', (215, 223)) ('PPGLs', 'Var', (132, 137)) ('Plasma concentrations of methoxytyramine', 'MPA', (0, 40)) ('metanephrine', 'MPA', (45, 57)) ('increased', 'PosReg', (76, 85)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (25, 40)) ('metanephrine', 'Chemical', 'MESH:D008676', (45, 57)) ('tumors', 'Disease', 'MESH:D009369', (232, 238)) ('HNPGLs', 'Phenotype', 'HP:0002864', (178, 184)) ('tumor', 'Phenotype', 'HP:0002664', (232, 237)) ('HNPGLs', 'Chemical', '-', (178, 184)) ('tumors', 'Phenotype', 'HP:0002664', (232, 238)) ('patients', 'Species', '9606', (164, 172)) ('patients', 'Species', '9606', (118, 126)) ('PPGLs', 'Chemical', '-', (132, 137)) ('tumors', 'Disease', (232, 238)) ('HNPGL', 'Phenotype', 'HP:0002864', (178, 183)) 47095 28476870 With the addition of methoxytyramine, diagnostic specificity decreased to 95.1%, while sensitivity increased to 98.6% for the detection of PPGLs and to 50.0% for the detection of HNPGLs. ('PPGLs', 'Chemical', '-', (139, 144)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (21, 36)) ('HNPGL', 'Phenotype', 'HP:0002864', (179, 184)) ('diagnostic specificity', 'MPA', (38, 60)) ('methoxytyramine', 'Var', (21, 36)) ('PPGLs', 'Disease', (139, 144)) ('HNPGLs', 'Phenotype', 'HP:0002864', (179, 185)) ('decreased', 'NegReg', (61, 70)) ('HNPGLs', 'Chemical', '-', (179, 185)) 47097 28476870 All the three patients with PPGLs and solitary increases in plasma methoxytyramine had mutations of the gene for succinate dehydrogenase subunit D and all presented with extra-adrenal paragangliomas, including one patient who also had a HNPGL. ('HNPGL', 'Phenotype', 'HP:0002864', (237, 242)) ('PPGLs', 'Disease', (28, 33)) ('patient', 'Species', '9606', (214, 221)) ('HNPGL', 'Chemical', '-', (237, 242)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (170, 198)) ('presented with', 'Reg', (155, 169)) ('patient', 'Species', '9606', (14, 21)) ('paragangliomas', 'Phenotype', 'HP:0002668', (184, 198)) ('paraganglioma', 'Phenotype', 'HP:0002668', (184, 197)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (67, 82)) ('plasma methoxytyramine', 'MPA', (60, 82)) ('PPGLs', 'Chemical', '-', (28, 33)) ('increases', 'PosReg', (47, 56)) ('extra-adrenal paragangliomas', 'Disease', (170, 198)) ('patients', 'Species', '9606', (14, 22)) ('mutations', 'Var', (87, 96)) 47102 28476870 One patient with an SDHB mutation had an 11.3 x 7.6 x 9.3 cm pelvic paraganglioma with extensive metastases that remained biochemically negative on repeated testing. ('metastases', 'Disease', (97, 107)) ('paraganglioma', 'Phenotype', 'HP:0002668', (68, 81)) ('mutation', 'Var', (25, 33)) ('patient', 'Species', '9606', (4, 11)) ('paraganglioma', 'Disease', (68, 81)) ('metastases', 'Disease', 'MESH:D009362', (97, 107)) ('SDHB', 'Gene', '6390', (20, 24)) ('paraganglioma', 'Disease', 'MESH:D010235', (68, 81)) ('SDHB', 'Gene', (20, 24)) 47110 28476870 Among the patients with PPGLs, 45.5% had increases of both normetanephrine and methoxytyramine above UCs and 49.3% had increases of both normetanephrine and metanephrine above UCs compared to less than 0.3% of patients without tumors (Fig. ('methoxytyramine', 'MPA', (79, 94)) ('normetanephrine', 'Chemical', 'MESH:D009647', (59, 74)) ('metanephrine', 'MPA', (157, 169)) ('PPGLs', 'Var', (24, 29)) ('tumors', 'Phenotype', 'HP:0002664', (227, 233)) ('normetanephrine', 'Chemical', 'MESH:D009647', (137, 152)) ('PPGLs', 'Chemical', '-', (24, 29)) ('patients', 'Species', '9606', (210, 218)) ('metanephrine', 'Chemical', 'MESH:D008676', (157, 169)) ('tumor', 'Phenotype', 'HP:0002664', (227, 232)) ('metanephrine', 'Chemical', 'MESH:D008676', (62, 74)) ('increases', 'PosReg', (41, 50)) ('tumors', 'Disease', (227, 233)) ('normetanephrine', 'MPA', (59, 74)) ('patients', 'Species', '9606', (10, 18)) ('metanephrine', 'Chemical', 'MESH:D008676', (140, 152)) ('increases', 'PosReg', (119, 128)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (79, 94)) ('tumors', 'Disease', 'MESH:D009369', (227, 233)) 47117 28476870 Of the patients with PPGLs, 185 (86.9%) had increases of one or more of the metabolites in the triplet panel of more than 2-fold above UCs compared with only 3 patients without tumors (Fig. ('patients', 'Species', '9606', (7, 15)) ('patients', 'Species', '9606', (160, 168)) ('tumors', 'Phenotype', 'HP:0002664', (177, 183)) ('PPGLs', 'Var', (21, 26)) ('metabolites in', 'MPA', (76, 90)) ('tumors', 'Disease', 'MESH:D009369', (177, 183)) ('PPGLs', 'Chemical', '-', (21, 26)) ('tumor', 'Phenotype', 'HP:0002664', (177, 182)) ('tumors', 'Disease', (177, 183)) ('increases', 'PosReg', (44, 53)) 47121 28476870 More importantly, we show that the addition of methoxytyramine to the standard test panel improves diagnostic utility by increasing the proportion of patients with highly positive predictive test results who may benefit by a decision to immediately locate and manage the tumors rather than be subject to further follow-up biochemical testing to confirm or exclude disease. ('methoxytyramine', 'Chemical', 'MESH:C001746', (47, 62)) ('tumor', 'Phenotype', 'HP:0002664', (271, 276)) ('methoxytyramine', 'Var', (47, 62)) ('tumors', 'Disease', (271, 277)) ('tumors', 'Disease', 'MESH:D009369', (271, 277)) ('tumors', 'Phenotype', 'HP:0002664', (271, 277)) ('diagnostic utility', 'MPA', (99, 117)) ('patients', 'Species', '9606', (150, 158)) ('increasing', 'PosReg', (121, 131)) ('improves', 'PosReg', (90, 98)) 47122 28476870 Our study also extends previous observations that measurements of methoxytyramine can be useful for identifying dopamine-producing HNPGLs, by significantly increasing test performance beyond that of the standard test panel. ('test performance', 'MPA', (167, 183)) ('HNPGLs', 'Chemical', '-', (131, 137)) ('HNPGLs', 'Disease', (131, 137)) ('HNPGLs', 'Phenotype', 'HP:0002864', (131, 137)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (66, 81)) ('HNPGL', 'Phenotype', 'HP:0002864', (131, 136)) ('dopamine-producing HNPGLs', 'Disease', (112, 137)) ('methoxytyramine', 'Var', (66, 81)) ('men', 'Species', '9606', (57, 60)) ('dopamine', 'Chemical', 'MESH:D004298', (112, 120)) ('increasing', 'PosReg', (156, 166)) 47136 28476870 As we now outline here, the addition of methoxytyramine to the test panel increases to over 70% the proportion of patients with highly predictive positive results for multiple metabolites. ('methoxytyramine', 'Var', (40, 55)) ('patients', 'Species', '9606', (114, 122)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (40, 55)) ('increases', 'PosReg', (74, 83)) 47139 28476870 Addition of methoxytyramine to standard tests of normetanephrine and metanephrine has already established utility, beyond screening for PPGLs, by pointing to possible metastatic disease or the presence of mutations in genes for succinate dehydrogenase. ('metastatic disease', 'Disease', (167, 185)) ('pointing', 'Reg', (146, 154)) ('metanephrine', 'Chemical', 'MESH:D008676', (52, 64)) ('mutations', 'Var', (205, 214)) ('PPGLs', 'Chemical', '-', (136, 141)) ('metanephrine', 'Chemical', 'MESH:D008676', (69, 81)) ('presence', 'Reg', (193, 201)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (12, 27)) ('normetanephrine', 'Chemical', 'MESH:D009647', (49, 64)) 47340 24642075 Pheochromocytomas tend to occur in specific families and genotype-phenotype correlations have demonstrated that missense mutations in VHL predispose to pheochromocytoma, referred to as type 2 VHL. ('pheochromocytoma', 'Disease', (152, 168)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (0, 17)) ('missense mutations', 'Var', (112, 130)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (152, 168)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (152, 168)) ('VHL', 'Gene', (192, 195)) ('Pheochromocytomas', 'Disease', (0, 17)) ('VHL', 'Gene', (134, 137)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('predispose to', 'Reg', (138, 151)) ('VHL', 'Gene', '7428', (134, 137)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('VHL', 'Gene', '7428', (192, 195)) 47341 24642075 Type I VHL, often characterized by germline deletions, insertions, and nonsense mutations of the VHL gene, uncommonly is associated with the development of pheochromocytoma. ('pheochromocytoma', 'Disease', (156, 172)) ('VHL', 'Gene', '7428', (97, 100)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (156, 172)) ('associated with', 'Reg', (121, 136)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (156, 172)) ('insertions', 'Var', (55, 65)) ('nonsense mutations', 'Var', (71, 89)) ('Type I VHL', 'Disease', (0, 10)) ('VHL', 'Gene', (7, 10)) ('Type I VHL', 'Disease', 'MESH:D006623', (0, 10)) ('VHL', 'Gene', '7428', (7, 10)) ('VHL', 'Gene', (97, 100)) 47362 24642075 NF1 is a critical negative regulator of TSC2 and mTOR, and loss of function actives downstream effectors such as S6K. ('mTOR', 'Gene', (49, 53)) ('mTOR', 'Gene', '2475', (49, 53)) ('S6K', 'MPA', (113, 116)) ('TSC2', 'Gene', '7249', (40, 44)) ('TSC2', 'Gene', (40, 44)) ('NF1', 'Gene', (0, 3)) ('actives', 'Reg', (76, 83)) ('NF1', 'Gene', '4763', (0, 3)) ('loss', 'Var', (59, 63)) 47369 24642075 Over the past decade the genetics of this syndrome have been elucidated with identification of mutations of the genes encoding the succinate dehydrogenase (SDH) subunits. ('SDH', 'Gene', '6390', (156, 159)) ('succinate dehydrogenase', 'Gene', (131, 154)) ('succinate dehydrogenase', 'Gene', '6390', (131, 154)) ('mutations', 'Var', (95, 104)) ('SDH', 'Gene', (156, 159)) 47372 24642075 Mutations in specific subunits of this enzyme complex are a common cause of the hereditary paraganglioma/pheochromocytoma syndromes. ('cause', 'Reg', (67, 72)) ('paraganglioma', 'Phenotype', 'HP:0002668', (91, 104)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (105, 121)) ('Mutations', 'Var', (0, 9)) ('hereditary paraganglioma/pheochromocytoma syndromes', 'Disease', 'MESH:D010673', (80, 131)) 47373 24642075 Mutations in the SDHB and SDHD genes have been the most well characterized of the SDH deficiencies. ('SDHB', 'Gene', '6390', (17, 21)) ('SDHD', 'Gene', (26, 30)) ('SDH deficiencies', 'Disease', (82, 98)) ('SDHD', 'Gene', '6392', (26, 30)) ('Mutations', 'Var', (0, 9)) ('SDH deficiencies', 'Disease', 'MESH:D007153', (82, 98)) ('SDHB', 'Gene', (17, 21)) 47376 24642075 Subsequently it was found that patients with germline succinate dehydrogenase B/C/D mutations are also at risk for the development of an aggressive form of kidney cancer (SDH-RCC). ('kidney cancer', 'Disease', 'MESH:D007680', (156, 169)) ('risk', 'Reg', (106, 110)) ('cancer', 'Phenotype', 'HP:0002664', (163, 169)) ('mutations', 'Var', (84, 93)) ('kidney cancer', 'Phenotype', 'HP:0009726', (156, 169)) ('SDH-RCC', 'Disease', (171, 178)) ('patients', 'Species', '9606', (31, 39)) ('SDH-RCC', 'Disease', 'MESH:C538614', (171, 178)) ('kidney cancer', 'Disease', (156, 169)) ('succinate dehydrogenase', 'Gene', (54, 77)) ('succinate dehydrogenase', 'Gene', '6390', (54, 77)) 47377 24642075 The majority of patients with germline SDHD mutations are at risk for the development of multiple chromafin tumors, with the most common site being head and neck paraganglioma (>79%). ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (148, 175)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('patients', 'Species', '9606', (16, 24)) ('SDHD', 'Gene', (39, 43)) ('SDHD', 'Gene', '6392', (39, 43)) ('paraganglioma', 'Phenotype', 'HP:0002668', (162, 175)) ('mutations', 'Var', (44, 53)) ('tumors', 'Disease', 'MESH:D009369', (108, 114)) ('tumors', 'Disease', (108, 114)) ('neck paraganglioma', 'Disease', (157, 175)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (157, 175)) ('tumors', 'Phenotype', 'HP:0002664', (108, 114)) 47378 24642075 Patients with germline SDHB gene mutations less commonly are found to develop multiple tumors, however they can be distributed in all locations, most commonly in the abdomen. ('develop', 'PosReg', (70, 77)) ('tumor', 'Phenotype', 'HP:0002664', (87, 92)) ('SDHB', 'Gene', '6390', (23, 27)) ('mutations', 'Var', (33, 42)) ('tumors', 'Phenotype', 'HP:0002664', (87, 93)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', (23, 27)) ('multiple', 'Disease', (78, 86)) ('tumors', 'Disease', (87, 93)) ('tumors', 'Disease', 'MESH:D009369', (87, 93)) 47384 24642075 SDHA gene mutation can be associated with Leigh's disease, a severe, early onset encephalopathy. ("Leigh's disease", 'Disease', (42, 57)) ('SDHA', 'Gene', (0, 4)) ('mutation', 'Var', (10, 18)) ('encephalopathy', 'Disease', 'MESH:D001927', (81, 95)) ('SDHA', 'Gene', '6389', (0, 4)) ('encephalopathy', 'Phenotype', 'HP:0001298', (81, 95)) ("Leigh's disease", 'Disease', 'MESH:D007888', (42, 57)) ('associated', 'Reg', (26, 36)) ('encephalopathy', 'Disease', (81, 95)) 47385 24642075 Recently, several reports have identified SDHA mutations in patients with functional paraganglioma and pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (103, 119)) ('functional paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (74, 119)) ('paraganglioma', 'Phenotype', 'HP:0002668', (85, 98)) ('SDHA', 'Gene', (42, 46)) ('patients', 'Species', '9606', (60, 68)) ('mutations', 'Var', (47, 56)) ('SDHA', 'Gene', '6389', (42, 46)) 47391 24642075 A PHD2 mutation has been recently reported in a patient with recurrent abdominal paraganglioma and polycythemia. ('polycythemia', 'Disease', (99, 111)) ('reported', 'Reg', (34, 42)) ('paraganglioma', 'Phenotype', 'HP:0002668', (81, 94)) ('PHD2', 'Gene', '54583', (2, 6)) ('polycythemia', 'Phenotype', 'HP:0001901', (99, 111)) ('polycythemia', 'Disease', 'MESH:D011086', (99, 111)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (71, 94)) ('PHD2', 'Gene', (2, 6)) ('patient', 'Species', '9606', (48, 55)) ('mutation', 'Var', (7, 15)) ('abdominal paraganglioma', 'Disease', (71, 94)) 47393 24642075 Germline mutation in KIF1Bbeta has been described in a large family with neural crest tumors and non-neural tumors including several bilateral pheochromocytomas. ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (133, 160)) ('non-neural tumors', 'Disease', 'MESH:C536408', (97, 114)) ('neural crest tumors', 'Disease', (73, 92)) ('non-neural tumors', 'Disease', (97, 114)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('neural crest tumors', 'Disease', 'MESH:C536408', (73, 92)) ('KIF1Bbeta', 'Gene', (21, 30)) ('tumors', 'Phenotype', 'HP:0002664', (86, 92)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (143, 160)) ('tumors', 'Phenotype', 'HP:0002664', (108, 114)) ('bilateral pheochromocytomas', 'Disease', (133, 160)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (143, 159)) ('described', 'Reg', (40, 49)) ('Germline mutation', 'Var', (0, 17)) 47396 24642075 Whole genome sequencing identified germline mutations in MAX to be responsible for several familial cases of pheochromocytoma. ('MAX', 'Gene', (57, 60)) ('responsible', 'Reg', (67, 78)) ('pheochromocytoma', 'Disease', (109, 125)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (109, 125)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (109, 125)) ('germline mutations', 'Var', (35, 53)) ('MAX', 'Gene', '4149', (57, 60)) 47397 24642075 In patients with suspected familial cases but no identifiable mutations in known genes, MAX mutations were found in 8.5% of cases. ('familial', 'Disease', (27, 35)) ('mutations', 'Var', (92, 101)) ('patients', 'Species', '9606', (3, 11)) ('MAX', 'Gene', '4149', (88, 91)) ('MAX', 'Gene', (88, 91)) ('found', 'Reg', (107, 112)) 47399 24642075 Exon sequencing of this region demonstrated a germline mutation at a gene known as TMEM127. ('germline mutation', 'Var', (46, 63)) ('TMEM127', 'Gene', (83, 90)) ('TMEM127', 'Gene', '55654', (83, 90)) 47400 24642075 Germline mutations were found in 30% of familial and about 3% of sporadic pheochromocytomas. ('Germline mutations', 'Var', (0, 18)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (74, 91)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (74, 91)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (74, 90)) ('pheochromocytomas', 'Disease', (74, 91)) ('found', 'Reg', (24, 29)) ('familial', 'Disease', (40, 48)) 47402 24642075 Studies indicate that TMEM127 may be a negative regulator of mTORC1 and loss of protein function activates downstream pathways such as S6K and 4EBP1. ('activates', 'PosReg', (97, 106)) ('mTORC1', 'Gene', (61, 67)) ('loss', 'Var', (72, 76)) ('TMEM127', 'Gene', (22, 29)) ('EBP1', 'Gene', (144, 148)) ('TMEM127', 'Gene', '55654', (22, 29)) ('protein', 'Protein', (80, 87)) ('EBP1', 'Gene', '4790', (144, 148)) ('S6K', 'Disease', (135, 138)) ('mTORC1', 'Gene', '382056', (61, 67)) 47404 24642075 Recently 2 patients at the National Institutes of Health with paraganglioma were found to have somatic gain of function mutation in HIF2a. ('mutation', 'Var', (120, 128)) ('paraganglioma', 'Phenotype', 'HP:0002668', (62, 75)) ('HIF2a', 'Gene', '2034', (132, 137)) ('paraganglioma', 'Disease', (62, 75)) ('patients', 'Species', '9606', (11, 19)) ('gain of function', 'PosReg', (103, 119)) ('HIF2a', 'Gene', (132, 137)) ('paraganglioma', 'Disease', 'MESH:D010235', (62, 75)) 47412 24642075 As mentioned above the NF1 is an extremely large gene and sequencing can be very costly; therefore a clinical diagnosis and the findings of elevated epinephrine or metanephrine often suffices, as de novo NF1 mutations are common. ('NF1', 'Gene', (204, 207)) ('metanephrine', 'Chemical', 'MESH:D008676', (164, 176)) ('NF1', 'Gene', '4763', (204, 207)) ('NF1', 'Gene', (23, 26)) ('mutations', 'Var', (208, 217)) ('NF1', 'Gene', '4763', (23, 26)) ('epinephrine', 'Chemical', 'MESH:D004837', (149, 160)) ('elevated epinephrine', 'Phenotype', 'HP:0003639', (140, 160)) ('elevated', 'PosReg', (140, 148)) ('epinephrine', 'MPA', (149, 160)) 47414 24642075 The incidence of malignancy is much higher with SDHB mutations, therefore, if a pheochromocytoma appears to be invasive or associated with metastatic disease, this gene should be considered for testing. ('pheochromocytoma', 'Disease', (80, 96)) ('associated', 'Reg', (123, 133)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('malignancy', 'Disease', (17, 27)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (80, 96)) ('mutations', 'Var', (53, 62)) ('malignancy', 'Disease', 'MESH:D009369', (17, 27)) ('SDHB', 'Gene', '6390', (48, 52)) ('SDHB', 'Gene', (48, 52)) 47426 24642075 In patients without a prior diagnosis of a hereditary syndrome, genetic testing prior to surgery may be usefjul. ('hereditary syndrome', 'Disease', (43, 62)) ('patients', 'Species', '9606', (3, 11)) ('hereditary syndrome', 'Disease', 'MESH:D009386', (43, 62)) ('genetic', 'Var', (64, 71)) 47428 24642075 However, findings such as germline SDHB mutation could lead recommendation of total adrenalectomy due to the higher incidence of malignancy. ('mutation', 'Var', (40, 48)) ('malignancy', 'Disease', (129, 139)) ('SDHB', 'Gene', (35, 39)) ('germline', 'Var', (26, 34)) ('lead', 'Reg', (55, 59)) ('malignancy', 'Disease', 'MESH:D009369', (129, 139)) ('SDHB', 'Gene', '6390', (35, 39)) 47459 26405465 Left-sided paroidectomy was performed due to the lesion within the left parietal salivary gland (later shown to be a basal cell adenoma in a histopathological examination) while no specimen collection or resection of the right-sided tumor were attempted due to the size and macroscopic presentation of the lesion. ('tumor', 'Phenotype', 'HP:0002664', (233, 238)) ('basal cell adenoma', 'Phenotype', 'HP:0002671', (117, 135)) ('Left-sided', 'Disease', (0, 10)) ('tumor', 'Disease', (233, 238)) ('basal cell adenoma', 'Disease', (117, 135)) ('lesion', 'Var', (49, 55)) ('tumor', 'Disease', 'MESH:D009369', (233, 238)) ('basal cell adenoma', 'Disease', 'MESH:D000236', (117, 135)) 47462 26405465 The examination showed a well-encapsulated tumor on the left, sized 84x65x50 mm - no regression observed following radiation therapy. ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('tumor', 'Disease', (43, 48)) ('tumor', 'Disease', 'MESH:D009369', (43, 48)) ('84x65x50 mm -', 'Var', (68, 81)) 47482 26405465 Mutations within the succinate dehydrogenase genes were reported as causes of paraganglioma syndrome (PGL). ('causes', 'Reg', (68, 74)) ('paraganglioma syndrome', 'Disease', (78, 100)) ('PGL', 'Disease', (102, 105)) ('Mutations', 'Var', (0, 9)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (78, 100)) ('PGL', 'Disease', 'MESH:D010235', (102, 105)) ('paraganglioma', 'Phenotype', 'HP:0002668', (78, 91)) 47483 26405465 Such mutations contribute to the occurrence of multiple locations of glomus tumors in 100% of cases. ('glomus tumors', 'Disease', (69, 82)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('mutations', 'Var', (5, 14)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) ('glomus tumors', 'Disease', 'MESH:D005918', (69, 82)) 47484 26405465 Tumors originating from paraganglial tissue may develop in various genetic diseases such as von Hippel-Lindau syndrome (VHL), neurofibromatosis type 1 (von Recklinghausen disease, NF1), multiple endocrine neoplasias of type 2 (MEN2 - mutation within the RET protooncogene), TMEM127, and MAX. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('VHL', 'Disease', 'MESH:D006623', (120, 123)) ('neurofibromatosis type 1', 'Gene', (126, 150)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('develop', 'Reg', (48, 55)) ('MEN2 - mutation', 'Var', (227, 242)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (126, 143)) ('endocrine neoplasias', 'Phenotype', 'HP:0100568', (195, 215)) ('von Recklinghausen disease', 'Disease', 'MESH:C537392', (152, 178)) ('RET', 'Gene', '5979', (254, 257)) ('NF1', 'Gene', '4763', (180, 183)) ('multiple endocrine neoplasias of type 2', 'Disease', (186, 225)) ('genetic diseases', 'Disease', 'MESH:D030342', (67, 83)) ('von Hippel-Lindau syndrome', 'Disease', (92, 118)) ('Tumors', 'Disease', (0, 6)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (92, 118)) ('multiple endocrine neoplasias of type 2', 'Disease', 'MESH:D018813', (186, 225)) ('NF1', 'Gene', (180, 183)) ('neurofibromatosis type 1', 'Gene', '4763', (126, 150)) ('VHL', 'Disease', (120, 123)) ('von Recklinghausen disease', 'Disease', (152, 178)) ('genetic diseases', 'Disease', (67, 83)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('TMEM127', 'Gene', (274, 281)) ('RET', 'Gene', (254, 257)) ('TMEM127', 'Gene', '55654', (274, 281)) ('neoplasias', 'Phenotype', 'HP:0002664', (205, 215)) 47627 24018082 123I-MIBG scintigraphy is highly specific and seems to be superior to CT scan and ultrasonography in identifying neoplastic and hyperplastic adrenomedullary lesions. ('hyperplastic adrenomedullary lesions', 'Disease', (128, 164)) ('123I-MIBG', 'Var', (0, 9)) ('hyperplastic adrenomedullary lesions', 'Disease', 'MESH:D051437', (128, 164)) ('123I-MIBG', 'Chemical', '-', (0, 9)) ('neoplastic', 'Disease', (113, 123)) 47633 24018082 In patients with Rearranged during Transfection (RET) mutations, responsible for type 2 MEN syndrome, and with other mutations such as succinate dehydrogenase subunit B, bilateral AMH has been identified. ('RET', 'Gene', '5979', (49, 52)) ('type 2 MEN syndrome', 'Disease', (81, 100)) ('mutations', 'Var', (54, 63)) ('RET', 'Gene', (49, 52)) ('Rearranged during Transfection', 'Gene', (17, 47)) ('patients', 'Species', '9606', (3, 11)) ('AMH', 'Chemical', '-', (180, 183)) ('Rearranged during Transfection', 'Gene', '5979', (17, 47)) ('type 2 MEN syndrome', 'Disease', 'MESH:D018813', (81, 100)) 47650 24018082 Laparoscopic adrenalectomies have smaller incisions; less intraoperative blood loss; and reduced postoperative wound complications, pain, and infections. ('pain', 'Phenotype', 'HP:0012531', (132, 136)) ('pain', 'Disease', 'MESH:D010146', (132, 136)) ('pain', 'Disease', (132, 136)) ('adrenalectomies', 'Disease', (13, 28)) ('less', 'NegReg', (53, 57)) ('infections', 'Disease', (142, 152)) ('Laparoscopic', 'Var', (0, 12)) ('reduced', 'NegReg', (89, 96)) ('intraoperative blood loss', 'Disease', (58, 83)) ('smaller incisions', 'Phenotype', 'HP:0005486', (34, 51)) ('intraoperative blood loss', 'Disease', 'MESH:D016063', (58, 83)) ('infections', 'Disease', 'MESH:D007239', (142, 152)) 47682 18210106 Since the year 2000, patients with somatostatin receptor-positive metastatic, inoperable GEPNETs and malignant pheochromocytomas have been treated with the radiolabeled somatostatin analogue [177Lu-DOTA0, Tyr3]octreotate (177Lu-octreotate) in our institution. ('177Lu-octreotate', 'Chemical', 'MESH:C554548', (222, 238)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (111, 128)) ('177Lu-DOTA0,', 'Chemical', '-', (192, 204)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (111, 127)) ('somatostatin', 'Gene', (169, 181)) ('patients', 'Species', '9606', (21, 29)) ('somatostatin', 'Gene', '6750', (35, 47)) ('Tyr3]octreotate', 'Chemical', 'MESH:C470036', (205, 220)) ('[177Lu-DOTA0', 'Var', (191, 203)) ('malignant pheochromocytomas', 'Disease', (101, 128)) ('malignant pheochromocytomas', 'Disease', 'MESH:D010673', (101, 128)) ('somatostatin', 'Gene', (35, 47)) ('somatostatin', 'Gene', '6750', (169, 181)) 47684 18210106 Although infrequent, hormonal release-induced crises can occur after 177Lu-octreotate treatment. ('hormonal release-induced', 'MPA', (21, 45)) ('177Lu-octreotate', 'Var', (69, 85)) ('177Lu-octreotate', 'Chemical', 'MESH:C554548', (69, 85)) ('men', 'Species', '9606', (91, 94)) 47731 18210106 After 131I-MIBG therapy, excessive catecholamine secretion with the above-mentioned severe symptomatology has been reported. ('131I-MIBG', 'Chemical', 'MESH:D019797', (6, 15)) ('catecholamine secretion', 'MPA', (35, 58)) ('catecholamine', 'Chemical', 'MESH:D002395', (35, 48)) ('131I-MIBG', 'Var', (6, 15)) ('men', 'Species', '9606', (74, 77)) ('excessive catecholamine', 'Phenotype', 'HP:0003334', (25, 48)) 47742 18210106 When possible, we stop somatostatin analogues before 177Lu-octreotate therapy to prevent competitive binding to the somatostatin receptors with 177Lu-octreotate. ('somatostatin', 'Gene', '6750', (23, 35)) ('177Lu-octreotate', 'Chemical', 'MESH:C554548', (144, 160)) ('somatostatin', 'Gene', '6750', (116, 128)) ('somatostatin', 'Gene', (23, 35)) ('177Lu-octreotate', 'Var', (144, 160)) ('binding', 'Interaction', (101, 108)) ('somatostatin', 'Gene', (116, 128)) ('177Lu-octreotate', 'Chemical', 'MESH:C554548', (53, 69)) 47759 18210106 Other less serious side effects shortly after 177Lu-octreotate, such as nausea, vomiting, and abdominal pain, are more common and can be controlled by supportive measures. ('vomiting', 'Disease', (80, 88)) ('vomiting', 'Disease', 'MESH:D014839', (80, 88)) ('abdominal pain', 'Phenotype', 'HP:0002027', (94, 108)) ('nausea', 'Disease', (72, 78)) ('abdominal pain', 'Disease', (94, 108)) ('nausea', 'Phenotype', 'HP:0002018', (72, 78)) ('nausea', 'Disease', 'MESH:D009325', (72, 78)) ('177Lu-octreotate', 'Chemical', 'MESH:C554548', (46, 62)) ('pain', 'Phenotype', 'HP:0012531', (104, 108)) ('vomiting', 'Phenotype', 'HP:0002013', (80, 88)) ('abdominal pain', 'Disease', 'MESH:D015746', (94, 108)) ('177Lu-octreotate', 'Var', (46, 62)) 47766 33768452 Genetic events underlying the development of these lesions are noted in several different signaling pathways, of which mutations in genes regulating the tricarboxylic acid (TCA) cycle are particularly associated to metastatic disease. ('metastatic disease', 'Disease', (215, 233)) ('associated', 'Reg', (201, 211)) ('TCA', 'Chemical', 'MESH:D014233', (173, 176)) ('mutations', 'Var', (119, 128)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (153, 171)) 47791 33768452 Germline mutations are most commonly detected in the Succinate dehydrogenase complex flavoprotein subunit B (SDHB), RET, VHL and NF1 genes, while somatic mutations are most commonly observed in Harvey rat sarcoma viral oncogene homolog (HRAS), NF1, Endothelial PAS domain-containing protein 1 (EPAS1) and RET. ('Endothelial PAS domain-containing protein 1', 'Gene', '29452', (249, 292)) ('rat', 'Species', '10116', (201, 204)) ('sarcoma', 'Disease', 'MESH:D012509', (205, 212)) ('Endothelial PAS domain-containing protein 1', 'Gene', (249, 292)) ('SDHB', 'Gene', (109, 113)) ('mutations', 'Var', (9, 18)) ('sarcoma', 'Disease', (205, 212)) ('EPAS1', 'Gene', (294, 299)) ('RET', 'Gene', (116, 119)) ('NF1', 'Gene', (129, 132)) ('Succinate dehydrogenase', 'Gene', '6390', (53, 76)) ('sarcoma', 'Phenotype', 'HP:0100242', (205, 212)) ('detected', 'Reg', (37, 45)) ('VHL', 'Gene', (121, 124)) ('Succinate dehydrogenase', 'Gene', (53, 76)) 47795 33768452 Tumors adhering to the kinase cluster (approximately 50% of all PPGLs) are often pheochromocytomas with low metastatic potential, and this cluster contains tumors with either germline or somatic mutations in NF1, RET, Myc-associated factor X (MAX), Transmembrane Protein 127 (TMEM127), Kinesin Family Member 1B (KIF1B-beta), and HRAS. ('pheochromocytomas', 'Disease', (81, 98)) ('NF1', 'Gene', (208, 211)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('Myc-associated factor X', 'Gene', '4149', (218, 241)) ('TMEM127', 'Gene', (276, 283)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (81, 98)) ('Tumors', 'Disease', (0, 6)) ('tumors', 'Phenotype', 'HP:0002664', (156, 162)) ('MAX', 'Gene', '4149', (243, 246)) ('Myc-associated factor X', 'Gene', (218, 241)) ('PPGLs', 'Chemical', '-', (64, 69)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('KIF1B-beta', 'Gene', (312, 322)) ('TMEM127', 'Gene', '55654', (276, 283)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('mutations', 'Var', (195, 204)) ('Transmembrane Protein 127', 'Gene', (249, 274)) ('tumors', 'Disease', (156, 162)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (81, 97)) ('Transmembrane Protein 127', 'Gene', '55654', (249, 274)) ('MAX', 'Gene', (243, 246)) ('tumors', 'Disease', 'MESH:D009369', (156, 162)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (81, 98)) 47799 33768452 TCA cycle aberrant PPGLs in general exhibit the highest risk of metastatic dissemination, which is due to the fact that the accumulation of onco-metabolites will inhibit the cellular effects of dioxygenases, a group of enzymes that catalyze the oxidation of various substrates via the conversion of alpha-ketoglutarate to succinate (Fig. ('PPGLs', 'Chemical', '-', (19, 24)) ('TCA', 'Gene', (0, 3)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (299, 318)) ('inhibit', 'NegReg', (162, 169)) ('rat', 'Species', '10116', (314, 317)) ('TCA', 'Chemical', 'MESH:D014233', (0, 3)) ('aberrant', 'Var', (10, 18)) ('dioxygenases', 'Enzyme', (194, 206)) ('oxidation', 'MPA', (245, 254)) ('succinate', 'Chemical', 'MESH:D019802', (322, 331)) ('cellular effects', 'MPA', (174, 190)) ('rat', 'Species', '10116', (271, 274)) ('metastatic dissemination', 'CPA', (64, 88)) 47802 33768452 On the other hand, pseudo-hypoxia-driven PPGLs without TCA cycle mutations are generally driven by mutations in the signaling networks that regulate hypoxia-inducible factor (HIF)-mediated transcription of target gene programs (Fig. ('hypoxia', 'Disease', (26, 33)) ('hypoxia', 'Disease', 'MESH:D000860', (26, 33)) ('PPGLs', 'Disease', (41, 46)) ('driven by', 'Reg', (89, 98)) ('TCA', 'Chemical', 'MESH:D014233', (55, 58)) ('TCA cycle', 'Gene', (55, 64)) ('mutations', 'Var', (99, 108)) ('hypoxia', 'Disease', 'MESH:D000860', (149, 156)) ('PPGLs', 'Chemical', '-', (41, 46)) ('hypoxia', 'Disease', (149, 156)) 47803 33768452 These events include inactivating mutations of the VHL, Egl-9 Family Hypoxia Inducible Factor 2 (EGLN2; encoding prolyl hydroxylase 1, PHD1) and EGLN1 (encoding PHD2) genes, as well as activating EPAS1/HIF2-alpha mutations. ('HIF2-alpha', 'Gene', (202, 212)) ('inactivating mutations', 'Var', (21, 43)) ('EGLN2', 'Gene', '112398', (97, 102)) ('Egl-9 Family Hypoxia Inducible Factor 2', 'Gene', (56, 95)) ('EGLN1', 'Gene', '54583', (145, 150)) ('PHD1', 'Gene', (135, 139)) ('activating', 'PosReg', (185, 195)) ('HIF2-alpha', 'Gene', '2034', (202, 212)) ('Egl-9 Family Hypoxia Inducible Factor 2', 'Gene', '112398', (56, 95)) ('PHD2', 'Gene', (161, 165)) ('EGLN2', 'Gene', (97, 102)) ('PHD2', 'Gene', '54583', (161, 165)) ('mutations', 'Var', (213, 222)) ('VHL', 'Gene', (51, 54)) ('EGLN1', 'Gene', (145, 150)) ('PHD1', 'Gene', '112398', (135, 139)) 47806 33768452 Given these molecular differences, TCA cycle-driven tumors are even more prone to metastatic spread than other PPGLs within the pseudo-hypoxia cluster, and there is probably a need to distinguish TCA cycle aberrant from TCA cycle non-aberrant PPGLs in terms of risk stratification. ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('hypoxia', 'Disease', (135, 142)) ('hypoxia', 'Disease', 'MESH:D000860', (135, 142)) ('rat', 'Species', '10116', (268, 271)) ('tumors', 'Phenotype', 'HP:0002664', (52, 58)) ('aberrant', 'Var', (206, 214)) ('TCA', 'Chemical', 'MESH:D014233', (220, 223)) ('prone', 'Reg', (73, 78)) ('TCA', 'Chemical', 'MESH:D014233', (196, 199)) ('TCA', 'Chemical', 'MESH:D014233', (35, 38)) ('tumors', 'Disease', (52, 58)) ('tumors', 'Disease', 'MESH:D009369', (52, 58)) ('PPGLs', 'Chemical', '-', (243, 248)) ('metastatic spread', 'CPA', (82, 99)) ('PPGLs', 'Chemical', '-', (111, 116)) 47807 33768452 This is furthermore mirrored by syndromic manifestations, in which SDHx mutated PPGLs display a significant increased risk of disseminated disease, while VHL associated tumors rarely exhibit metastatic potential:although adhering to the same transcriptional cluster. ('PPGLs', 'Gene', (80, 85)) ('mutated', 'Var', (72, 79)) ('SDH', 'Gene', '6390', (67, 70)) ('tumors', 'Disease', 'MESH:D009369', (169, 175)) ('tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('tumors', 'Phenotype', 'HP:0002664', (169, 175)) ('disseminated disease', 'Disease', (126, 146)) ('PPGLs', 'Chemical', '-', (80, 85)) ('tumors', 'Disease', (169, 175)) ('SDH', 'Gene', (67, 70)) 47808 33768452 The Wnt cluster contains mostly pheochromocytomas with somatic fusions involving the Mastermind Like Transcriptional Coactivator 3 (MAML3) gene as well as Cold Shock Domain Containing E1 (CDSE1) mutations. ('Mastermind Like Transcriptional Coactivator 3', 'Gene', '55534', (85, 130)) ('MAML3', 'Gene', '55534', (132, 137)) ('Shock', 'Phenotype', 'HP:0031273', (160, 165)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (32, 48)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (32, 49)) ('mutations', 'Var', (195, 204)) ('CDSE1', 'Gene', (188, 193)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (32, 49)) ('Mastermind Like Transcriptional Coactivator 3', 'Gene', (85, 130)) ('MAML3', 'Gene', (132, 137)) ('pheochromocytomas', 'Disease', (32, 49)) ('fusions', 'Var', (63, 70)) 47809 33768452 The MAML3 protein acts as a transcriptional coactivator of NOTCH pathway associated genes, and MAML3 fusions and MAML3 overexpression are recurrent features in various tumor types. ('fusions', 'Var', (101, 108)) ('MAML3', 'Gene', '55534', (95, 100)) ('MAML3', 'Gene', '55534', (4, 9)) ('tumor', 'Disease', (168, 173)) ('MAML3', 'Gene', (95, 100)) ('MAML3', 'Gene', (4, 9)) ('MAML3', 'Gene', (113, 118)) ('MAML3', 'Gene', '55534', (113, 118)) ('tumor', 'Disease', 'MESH:D009369', (168, 173)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) 47811 33768452 In PPGL, CDSE1 mutations are found on the somatic level and are expected to exhibit loss-of-function properties. ('loss-of-function', 'NegReg', (84, 100)) ('PPGL', 'Chemical', '-', (3, 7)) ('CDSE1', 'Gene', (9, 14)) ('mutations', 'Var', (15, 24)) 47830 33768452 As of this, PPGL patients with germline RET mutations may exhibit alarming histological features, although these patients very rarely present with metastatic disease in the clinical setting. ('RET', 'Gene', (40, 43)) ('PPGL', 'Chemical', '-', (12, 16)) ('patients', 'Species', '9606', (113, 121)) ('germline', 'Var', (31, 39)) ('patients', 'Species', '9606', (17, 25)) 47845 33768452 The advent of modern next-generation analyses have revolutionized the ability to classify PPGLs, not only in terms of transcriptome clustering but also as a way to detect germline alterations in patients in need of genetic counselling and to pinpoint high-risk mutations in TCA cycle/pseudo-hypoxia-related PPGLs indicating higher risk of metastatic events. ('mutations', 'Var', (261, 270)) ('PPGLs', 'Gene', (307, 312)) ('hypoxia', 'Disease', (291, 298)) ('rat', 'Species', '10116', (184, 187)) ('hypoxia', 'Disease', 'MESH:D000860', (291, 298)) ('rat', 'Species', '10116', (30, 33)) ('patients', 'Species', '9606', (195, 203)) ('PPGLs', 'Chemical', '-', (307, 312)) ('PPGLs', 'Chemical', '-', (90, 95)) ('TCA', 'Chemical', 'MESH:D014233', (274, 277)) 47846 33768452 Following the detection of absent SDHB expression in hereditary PPGLs in patients with germline SDHB or SDHD mutations, several independent groups have verified the value of SDHB immunohistochemistry to pinpoint SDHx gene mutations occurring either on the somatic or germline level in PPGL. ('SDH', 'Gene', '6390', (96, 99)) ('SDH', 'Gene', '6390', (104, 107)) ('SDH', 'Gene', '6390', (174, 177)) ('SDHD', 'Gene', (104, 108)) ('SDH', 'Gene', (34, 37)) ('PPGL', 'Chemical', '-', (64, 68)) ('SDH', 'Gene', (96, 99)) ('SDH', 'Gene', (104, 107)) ('mutations', 'Var', (222, 231)) ('expression', 'MPA', (39, 49)) ('PPGL', 'Chemical', '-', (285, 289)) ('SDH', 'Gene', '6390', (212, 215)) ('absent', 'NegReg', (27, 33)) ('SDH', 'Gene', (174, 177)) ('PPGLs', 'Chemical', '-', (64, 69)) ('patients', 'Species', '9606', (73, 81)) ('SDH', 'Gene', (212, 215)) ('SDHD', 'Gene', '6392', (104, 108)) ('SDH', 'Gene', '6390', (34, 37)) 47847 33768452 The reason behind the ability of SDHB staining to pinpoint cases with either SDHB, C, or D subunit mutations stems from the fact that the succinate dehydrogenase enzyme complex is anchored to the mitochondrial inner membrane via the C and D subunits. ('mutations', 'Var', (99, 108)) ('succinate dehydrogenase', 'Gene', (138, 161)) ('SDHB', 'Gene', (77, 81)) ('succinate dehydrogenase', 'Gene', '6390', (138, 161)) 47848 33768452 The scoring and interpretation of SDHB immunohistochemistry has been proved highly reproducible between pathologists and also a reliable tool in terms of detecting underlying SDHx gene mutations. ('SDH', 'Gene', (175, 178)) ('SDH', 'Gene', (34, 37)) ('mutations', 'Var', (185, 194)) ('SDH', 'Gene', '6390', (175, 178)) ('SDH', 'Gene', '6390', (34, 37)) 47850 33768452 In contrast, SDHA mutated PPGLs lose both SDHA and B immunoreactivity, and therefore, SDHA immunohistochemistry could complement the screening panel to detect rare PPGLs with SDHA mutations. ('SDHA', 'Gene', '6389', (86, 90)) ('mutated', 'Var', (18, 25)) ('lose', 'NegReg', (32, 36)) ('B immunoreactivity', 'MPA', (51, 69)) ('SDHA', 'Gene', (42, 46)) ('PPGLs', 'Chemical', '-', (26, 31)) ('PPGLs', 'Chemical', '-', (164, 169)) ('SDHA', 'Gene', '6389', (13, 17)) ('SDHA', 'Gene', (86, 90)) ('SDHA', 'Gene', '6389', (175, 179)) ('SDHA', 'Gene', '6389', (42, 46)) ('SDHA', 'Gene', (13, 17)) ('SDHA', 'Gene', (175, 179)) 47851 33768452 SDHD immunostaining has also been assessed in PPGLs, in which positive immunoreactivity was observed in SDHx gene mutated cases:while wild-type cases stained negative. ('SDH', 'Gene', '6390', (104, 107)) ('SDH', 'Gene', (0, 3)) ('mutated', 'Var', (114, 121)) ('SDH', 'Gene', (104, 107)) ('SDHD', 'Gene', '6392', (0, 4)) ('SDH', 'Gene', '6390', (0, 3)) ('SDHD', 'Gene', (0, 4)) ('PPGLs', 'Chemical', '-', (46, 51)) 47852 33768452 The reason for this paradoxal and inverted finding could be the potential de-masking of the SDHD epitope upon mutation-mediated disruption of the SDH complex. ('mutation-mediated disruption', 'Var', (110, 138)) ('SDH', 'Gene', (92, 95)) ('SDHD', 'Gene', '6392', (92, 96)) ('SDHD', 'Gene', (92, 96)) ('SDH', 'Gene', '6390', (146, 149)) ('de-masking', 'NegReg', (74, 84)) ('SDH', 'Gene', '6390', (92, 95)) ('SDH', 'Gene', (146, 149)) ('disruption', 'Var', (128, 138)) 47853 33768452 Moreover, immunohistochemistry targeting fumarate hydratase (FH) has been proven as an efficient method to pinpoint rare FH gene germline mutations in PPGL, in turn coupled to the hereditary leiomatosis and renal cell carcinoma (HLRCC) syndrome. ('FH', 'Gene', '2271', (121, 123)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (207, 227)) ('fumarate hydratase', 'Gene', '2271', (41, 59)) ('carcinoma', 'Phenotype', 'HP:0030731', (218, 227)) ('FH', 'Gene', '2271', (61, 63)) ('PPGL', 'Chemical', '-', (151, 155)) ('PPGL', 'Gene', (151, 155)) ('fumarate hydratase', 'Gene', (41, 59)) ('coupled to', 'Reg', (165, 175)) ('hereditary leiomatosis and renal cell carcinoma (HLRCC) syndrome', 'Disease', 'MESH:C538614', (180, 244)) ('mutations', 'Var', (138, 147)) 47855 33768452 CAIX is frequently found up-regulated in PPGL with underlying VHL gene mutations, and the identification of strong immunoreactivity in a PPGL might therefore be a way to identify VHL driven tumors with a lower (but not unneglectable) risk of aggressive behavior than TCA cycle aberrant PPGLs. ('CAIX', 'Gene', '768', (0, 4)) ('TCA', 'Chemical', 'MESH:D014233', (267, 270)) ('up-regulated', 'PosReg', (25, 37)) ('aggressive behavior', 'Disease', (242, 261)) ('PPGL', 'Chemical', '-', (286, 290)) ('tumors', 'Disease', 'MESH:D009369', (190, 196)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (242, 261)) ('tumor', 'Phenotype', 'HP:0002664', (190, 195)) ('PPGL', 'Chemical', '-', (137, 141)) ('VHL gene', 'Gene', (62, 70)) ('mutations', 'Var', (71, 80)) ('CAIX', 'Gene', (0, 4)) ('tumors', 'Disease', (190, 196)) ('PPGL', 'Chemical', '-', (41, 45)) ('PPGLs', 'Chemical', '-', (286, 291)) ('tumors', 'Phenotype', 'HP:0002664', (190, 196)) ('aggressive behavior', 'Disease', 'MESH:D001523', (242, 261)) 47856 33768452 Similarly, rare cases of MAX mutated or gene rearranged PPGLs usually exhibit loss of MAX protein expression:adding yet another potential tool to the diagnostic workup of these lesions. ('MAX', 'Gene', '4149', (25, 28)) ('MAX', 'Gene', (25, 28)) ('MAX', 'Gene', '4149', (86, 89)) ('MAX', 'Gene', (86, 89)) ('gene rearranged', 'Var', (40, 55)) ('loss', 'NegReg', (78, 82)) ('PPGLs', 'Chemical', '-', (56, 61)) ('PPGLs', 'Gene', (56, 61)) 47857 33768452 Besides immunohistochemical analyses aiding in the context of underlying mutations, an additional marker of prognostic significance include chromogranin B (CHGB), which was the top downregulated gene in an expressional study when stratifying for metastatic PPGLs. ('chromogranin B', 'Gene', '1114', (140, 154)) ('rat', 'Species', '10116', (232, 235)) ('metastatic PPGLs', 'Disease', (246, 262)) ('chromogranin B', 'Gene', (140, 154)) ('CHGB', 'Gene', '1114', (156, 160)) ('PPGLs', 'Chemical', '-', (257, 262)) ('CHGB', 'Gene', (156, 160)) ('mutations', 'Var', (73, 82)) 47864 33768452 As previously discussed, gene fusions involving MAML3 and CDSE1 mutations are overrepresented in PPGL associated to the Wnt transcriptome cluster, and these tumors have a significantly higher metastatic rate than PPGL associated to the kinase cluster. ('overrepresented', 'PosReg', (78, 93)) ('metastatic rate', 'CPA', (192, 207)) ('tumors', 'Phenotype', 'HP:0002664', (157, 163)) ('MAML3', 'Gene', '55534', (48, 53)) ('tumors', 'Disease', (157, 163)) ('tumors', 'Disease', 'MESH:D009369', (157, 163)) ('MAML3', 'Gene', (48, 53)) ('higher', 'PosReg', (185, 191)) ('PPGL', 'Chemical', '-', (213, 217)) ('mutations', 'Var', (64, 73)) ('tumor', 'Phenotype', 'HP:0002664', (157, 162)) ('CDSE1', 'Gene', (58, 63)) ('rat', 'Species', '10116', (203, 206)) ('PPGL', 'Chemical', '-', (97, 101)) ('PPGL', 'Gene', (97, 101)) 47865 33768452 Moreover, metastatic PPGLs also harbor somatic gene alterations of potential value for further investigations, such as mutations in transport and cell adhesion genes, recurrent Transcriptional regulator ATRX (ATRX) mutations as well as upregulated Telomerase reverse transcriptase (TERT) gene expression and TERT gene rearrangements. ('upregulated', 'PosReg', (236, 247)) ('rat', 'Species', '10116', (56, 59)) ('ATRX', 'Gene', (209, 213)) ('TERT', 'Gene', '7015', (308, 312)) ('Transcriptional regulator ATRX', 'Gene', (177, 207)) ('TERT', 'Gene', '7015', (282, 286)) ('ATRX', 'Gene', (203, 207)) ('TERT', 'Gene', (282, 286)) ('mutations', 'Var', (215, 224)) ('PPGLs', 'Chemical', '-', (21, 26)) ('Transcriptional regulator ATRX', 'Gene', '546', (177, 207)) ('Telomerase reverse transcriptase', 'Gene', (248, 280)) ('ATRX', 'Gene', '546', (209, 213)) ('ATRX', 'Gene', '546', (203, 207)) ('Telomerase reverse transcriptase', 'Gene', '7015', (248, 280)) ('expression', 'MPA', (293, 303)) ('mutations', 'Var', (119, 128)) ('TERT', 'Gene', (308, 312)) 47866 33768452 TERT gene aberrancies are common in various cancers and usually confer an increased TERT mRNA gene output, which is thought to confer immortalization through the elongation of telomeric DNA for these tumor types. ('tumor', 'Disease', 'MESH:D009369', (200, 205)) ('TERT', 'Gene', (84, 88)) ('TERT', 'Gene', '7015', (84, 88)) ('cancers', 'Phenotype', 'HP:0002664', (44, 51)) ('tumor', 'Phenotype', 'HP:0002664', (200, 205)) ('cancers', 'Disease', (44, 51)) ('cancers', 'Disease', 'MESH:D009369', (44, 51)) ('TERT', 'Gene', (0, 4)) ('increased', 'PosReg', (74, 83)) ('tumor', 'Disease', (200, 205)) ('TERT', 'Gene', '7015', (0, 4)) ('aberrancies', 'Var', (10, 21)) 47867 33768452 ATRX encodes a chromatin remodeling protein, and mutations in this gene were intimately coupled to an alternative lengthening of telomeres, furthermore suggesting that the regulation of telomeric regions is crucial for metastatic PPGLs. ('mutations', 'Var', (49, 58)) ('ATRX', 'Gene', (0, 4)) ('PPGLs', 'Chemical', '-', (230, 235)) ('ATRX', 'Gene', '546', (0, 4)) ('coupled', 'Reg', (88, 95)) ('PPGLs', 'Disease', (230, 235)) 47868 33768452 To add to the association between epigenetic regulators and metastatic potential, somatic mutations in SET domain containing 2 histone lysine methyltransferase (SETD2) have also been found overrepresented in PPGLs with disseminated disease. ('mutations', 'Var', (90, 99)) ('SETD2', 'Gene', '29072', (161, 166)) ('overrepresented', 'PosReg', (189, 204)) ('SETD2', 'Gene', (161, 166)) ('disseminated disease', 'Disease', (219, 239)) ('PPGLs', 'Chemical', '-', (208, 213)) 47870 33768452 In contrast, mutations in other components of the epigenetic machinery that governs chromatin remodeling are mostly found in metastatic-free PPGLs. ('PPGLs', 'Chemical', '-', (141, 146)) ('mutations', 'Var', (13, 22)) ('found', 'Reg', (116, 121)) 47872 33768452 In terms of epigenetic modifications, we know that especially TCA cycle aberrant PPGLs display unique methylation profiles on both global and gene-specific levels. ('PPGLs', 'Chemical', '-', (81, 86)) ('TCA', 'Chemical', 'MESH:D014233', (62, 65)) ('methylation profiles', 'MPA', (102, 122)) ('PPGLs', 'Gene', (81, 86)) ('aberrant', 'Var', (72, 80)) 47873 33768452 Although no clear-cut methylation panel for clinical usage in terms of prognostication exists, the association between hypermethylation, TCA cycle defects and metastatic PPGLs could have clinical implications in terms of treatment. ('TCA', 'Chemical', 'MESH:D014233', (137, 140)) ('metastatic', 'CPA', (159, 169)) ('TCA cycle', 'Gene', (137, 146)) ('defects', 'Var', (147, 154)) ('hypermethylation', 'Var', (119, 135)) ('association', 'Interaction', (99, 110)) ('PPGLs', 'Chemical', '-', (170, 175)) 47874 33768452 For example, as O(6)-methylguanine-DNA methyltransferase (MGMT) constitutes an epigenetically silenced gene in SDHx mutated PPGLs, this could probably explain the partial effect of temozolomide in these cases. ('MGMT', 'Gene', '4255', (58, 62)) ('O(6)-methylguanine-DNA methyltransferase', 'Gene', '4255', (16, 56)) ('MGMT', 'Gene', (58, 62)) ('PPGLs', 'Gene', (124, 129)) ('SDH', 'Gene', '6390', (111, 114)) ('temozolomide', 'Chemical', 'MESH:D000077204', (181, 193)) ('mutated', 'Var', (116, 123)) ('SDH', 'Gene', (111, 114)) ('PPGLs', 'Chemical', '-', (124, 129)) 47965 33734413 Of the GISTs, none carried c-kit or PDGFRA mutations, 13 tumors (65.0%) were located in the jejunum or ileum, and 6 tumors (30.0%) were located in the duodenum. ('tumors', 'Disease', (116, 122)) ('tumors', 'Disease', 'MESH:D009369', (116, 122)) ('GISTs', 'Phenotype', 'HP:0100723', (7, 12)) ('c-kit', 'Gene', '3815', (27, 32)) ('c-kit', 'Gene', (27, 32)) ('tumors', 'Phenotype', 'HP:0002664', (57, 63)) ('mutations', 'Var', (43, 52)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('tumor', 'Phenotype', 'HP:0002664', (57, 62)) ('PDGFRA', 'Gene', '5156', (36, 42)) ('PDGFRA', 'Gene', (36, 42)) ('tumors', 'Disease', (57, 63)) ('tumors', 'Phenotype', 'HP:0002664', (116, 122)) ('tumors', 'Disease', 'MESH:D009369', (57, 63)) 47993 33734413 Inactivating mutations in NF1 is associated with downstream activation of mitogen-activated protein kinase, phosphatidylinositol 3-kinase/protein kinase B/mechanistic target of rapamycin signaling, and uncontrolled cellular growth, differentiation, and survival, which is associated with the disease origin of NF1, including NF1-associated neoplasms. ('neoplasm', 'Phenotype', 'HP:0002664', (340, 348)) ('uncontrolled cellular growth', 'CPA', (202, 230)) ('NF1', 'Gene', (325, 328)) ('NF1', 'Gene', '4763', (310, 313)) ('activation', 'PosReg', (60, 70)) ('neoplasms', 'Disease', 'MESH:D009369', (340, 349)) ('survival', 'CPA', (253, 261)) ('NF1', 'Gene', (310, 313)) ('Inactivating mutations', 'Var', (0, 22)) ('differentiation', 'CPA', (232, 247)) ('protein kinase B', 'Gene', '2185', (138, 154)) ('mechanistic target of rapamycin', 'Gene', (155, 186)) ('mechanistic target of rapamycin', 'Gene', '2475', (155, 186)) ('mitogen-activated', 'MPA', (74, 91)) ('neoplasms', 'Disease', (340, 349)) ('protein kinase B', 'Gene', (138, 154)) ('NF1', 'Gene', '4763', (26, 29)) ('NF1', 'Gene', (26, 29)) ('NF1', 'Gene', '4763', (325, 328)) ('neoplasms', 'Phenotype', 'HP:0002664', (340, 349)) 48002 33734413 A 2000 review found that NF1-associated LGGs undergo malignant transformation more frequently than comparable sporadic LGGs; thus, malignant transformation of NF1-associated LGGs may be associated with the increased prevalence and younger age of diagnosis for HGG among patients with NF1 in our study compared with the general population. ('NF1', 'Gene', '4763', (159, 162)) ('patients', 'Species', '9606', (270, 278)) ('malignant transformation', 'Var', (131, 155)) ('NF1', 'Gene', (284, 287)) ('HGG', 'Disease', (260, 263)) ('NF1', 'Gene', '4763', (284, 287)) ('NF1', 'Gene', (25, 28)) ('NF1', 'Gene', '4763', (25, 28)) ('NF1', 'Gene', (159, 162)) 48056 22889334 A cryptic BAP1 splice mutation in a family with uveal and cutaneous melanoma, and paraganglioma Inactivating germ line BRCA1-associated protein-1 (BAP1) mutations have recently been reported in families with uveal or cutaneous malignant melanoma (UMM, CMM), mesothelioma, and meningioma. ('mutations', 'Var', (153, 162)) ('BAP1', 'Gene', (10, 14)) ('mesothelioma', 'Disease', (258, 270)) ('meningioma', 'Disease', 'MESH:D008577', (276, 286)) ('mesothelioma', 'Disease', 'MESH:D008654', (258, 270)) ('cutaneous malignant melanoma', 'Phenotype', 'HP:0012056', (217, 245)) ('paraganglioma', 'Disease', (82, 95)) ('paraganglioma', 'Disease', 'MESH:D010235', (82, 95)) ('cutaneous malignant melanoma', 'Disease', 'MESH:C562393', (217, 245)) ('BAP1', 'Gene', '8314', (147, 151)) ('BRCA1-associated protein-1', 'Gene', '8314', (119, 145)) ('uveal or cutaneous malignant melanoma', 'Phenotype', 'HP:0007716', (208, 245)) ('melanoma', 'Phenotype', 'HP:0002861', (237, 245)) ('melanoma', 'Phenotype', 'HP:0002861', (68, 76)) ('BRCA1-associated protein-1', 'Gene', (119, 145)) ('Inactivating', 'NegReg', (96, 108)) ('BAP1', 'Gene', '8314', (10, 14)) ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('BAP1', 'Gene', (147, 151)) ('cutaneous melanoma', 'Disease', (58, 76)) ('meningioma', 'Disease', (276, 286)) ('cutaneous malignant melanoma', 'Disease', (217, 245)) ('reported', 'Reg', (182, 190)) ('cutaneous melanoma', 'Disease', 'MESH:C562393', (58, 76)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (58, 76)) ('meningioma', 'Phenotype', 'HP:0002858', (276, 286)) ('malignant melanoma', 'Phenotype', 'HP:0002861', (227, 245)) 48057 22889334 Although apparently predisposing to a wide range of tumors, the exact tumor spectrum associated with germ line BAP1 mutations has yet to be established. ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('BAP1', 'Gene', '8314', (111, 115)) ('tumors', 'Phenotype', 'HP:0002664', (52, 58)) ('tumor', 'Disease', (52, 57)) ('tumor', 'Disease', (70, 75)) ('tumors', 'Disease', (52, 58)) ('tumors', 'Disease', 'MESH:D009369', (52, 58)) ('BAP1', 'Gene', (111, 115)) ('mutations', 'Var', (116, 125)) ('tumor', 'Disease', 'MESH:D009369', (52, 57)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) 48058 22889334 Here, we report a novel germ line BAP1 splice mutation, c.1708C>G (p.Leu570fs*40), in a multiple-case Danish UMM family with a spectrum of other tumors. ('c.1708C>G', 'Var', (56, 65)) ('BAP1', 'Gene', (34, 38)) ('p.Leu570fs*40', 'Mutation', 'p.L570fsX40', (67, 80)) ('c.1708C>G', 'Mutation', 'c.1708C>G', (56, 65)) ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('tumors', 'Disease', (145, 151)) ('tumors', 'Phenotype', 'HP:0002664', (145, 151)) ('tumors', 'Disease', 'MESH:D009369', (145, 151)) ('BAP1', 'Gene', '8314', (34, 38)) 48059 22889334 Whole-exome sequencing identified an apparent missense mutation of BAP1 in UMM, CMM, as well as paraganglioma, breast cancer, and suspected mesothelioma cases in the family. ('paraganglioma', 'Disease', 'MESH:D010235', (96, 109)) ('mesothelioma', 'Disease', (140, 152)) ('mesothelioma', 'Disease', 'MESH:D008654', (140, 152)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('cancer', 'Phenotype', 'HP:0002664', (118, 124)) ('missense mutation', 'Var', (46, 63)) ('breast cancer', 'Disease', 'MESH:D001943', (111, 124)) ('breast cancer', 'Phenotype', 'HP:0003002', (111, 124)) ('BAP1', 'Gene', '8314', (67, 71)) ('paraganglioma', 'Disease', (96, 109)) ('breast cancer', 'Disease', (111, 124)) ('BAP1', 'Gene', (67, 71)) 48060 22889334 Bioinformatic analysis and splicing assays demonstrated that this mutation creates a strong cryptic splice donor, resulting in aberrant splicing and a truncating frameshift of the BAP1 transcript. ('BAP1', 'Gene', '8314', (180, 184)) ('splicing', 'MPA', (136, 144)) ('mutation', 'Var', (66, 74)) ('BAP1', 'Gene', (180, 184)) ('truncating', 'MPA', (151, 161)) 48063 22889334 The report of a germ line inactivating mutation of the BRCA1-associated protein-1 (BAP1) in a patient with uveal malignant melanoma (UMM) as a part of the initial discovery of frequent somatic BAP1 mutations in UMM suggested a role for BAP1 in cancer predisposition. ('inactivating mutation', 'Var', (26, 47)) ('cancer', 'Disease', 'MESH:D009369', (244, 250)) ('malignant melanoma', 'Phenotype', 'HP:0002861', (113, 131)) ('uveal malignant melanoma', 'Disease', (107, 131)) ('mutations', 'Var', (198, 207)) ('BAP1', 'Gene', '8314', (236, 240)) ('patient', 'Species', '9606', (94, 101)) ('BAP1', 'Gene', '8314', (83, 87)) ('BAP1', 'Gene', '8314', (193, 197)) ('uveal malignant melanoma', 'Disease', 'MESH:C536494', (107, 131)) ('BRCA1-associated protein-1', 'Gene', '8314', (55, 81)) ('melanoma', 'Phenotype', 'HP:0002861', (123, 131)) ('BRCA1-associated protein-1', 'Gene', (55, 81)) ('BAP1', 'Gene', (236, 240)) ('cancer', 'Disease', (244, 250)) ('uveal malignant melanoma', 'Phenotype', 'HP:0007716', (107, 131)) ('BAP1', 'Gene', (83, 87)) ('cancer', 'Phenotype', 'HP:0002664', (244, 250)) ('BAP1', 'Gene', (193, 197)) 48064 22889334 Consistent with this finding, recently identified germ line BAP1 mutations in two families with a syndrome characterized by multiple skin-colored elevated melanocytic tumors, with some individuals also developing UMM or cutaneous malignant melanoma (CMM). ('cutaneous malignant melanoma', 'Disease', (220, 248)) ('UMM', 'Disease', (213, 216)) ('developing', 'Reg', (202, 212)) ('cutaneous malignant melanoma', 'Disease', 'MESH:C562393', (220, 248)) ('BAP1', 'Gene', '8314', (60, 64)) ('melanocytic tumors', 'Disease', (155, 173)) ('melanocytic tumors', 'Disease', 'MESH:D009508', (155, 173)) ('tumor', 'Phenotype', 'HP:0002664', (167, 172)) ('melanoma', 'Phenotype', 'HP:0002861', (240, 248)) ('tumors', 'Phenotype', 'HP:0002664', (167, 173)) ('BAP1', 'Gene', (60, 64)) ('cutaneous malignant melanoma', 'Phenotype', 'HP:0012056', (220, 248)) ('mutations', 'Var', (65, 74)) ('malignant melanoma', 'Phenotype', 'HP:0002861', (230, 248)) 48065 22889334 At the same time, reported germ line BAP1 mutations in two families with at least five patients with mesothelioma, as well as individuals diagnosed with other cancers including UMM. ('cancers', 'Disease', (159, 166)) ('patients', 'Species', '9606', (87, 95)) ('cancer', 'Phenotype', 'HP:0002664', (159, 165)) ('BAP1', 'Gene', '8314', (37, 41)) ('mesothelioma', 'Disease', (101, 113)) ('cancers', 'Phenotype', 'HP:0002664', (159, 166)) ('BAP1', 'Gene', (37, 41)) ('cancers', 'Disease', 'MESH:D009369', (159, 166)) ('mutations', 'Var', (42, 51)) ('mesothelioma', 'Disease', 'MESH:D008654', (101, 113)) 48066 22889334 More recently, described a UMM family with cases of CMM, meningioma, and lung adenocarcinoma carrying a BAP1 mutation. ('BAP1', 'Gene', '8314', (104, 108)) ('lung adenocarcinoma', 'Disease', (73, 92)) ('meningioma', 'Disease', (57, 67)) ('lung adenocarcinoma', 'Disease', 'MESH:D000077192', (73, 92)) ('lung adenocarcinoma', 'Phenotype', 'HP:0030078', (73, 92)) ('meningioma', 'Phenotype', 'HP:0002858', (57, 67)) ('BAP1', 'Gene', (104, 108)) ('meningioma', 'Disease', 'MESH:D008577', (57, 67)) ('CMM', 'Disease', (52, 55)) ('mutation', 'Var', (109, 117)) 48067 22889334 Similarly, reported two families with BAP1 mutations co-segregating with both UMM and CMM, as well as four other mutations in sporadic UMM and/or CMM cases. ('BAP1', 'Gene', (38, 42)) ('UMM', 'Disease', (78, 81)) ('CMM', 'Disease', (86, 89)) ('mutations', 'Var', (43, 52)) ('BAP1', 'Gene', '8314', (38, 42)) 48068 22889334 All 14 of the germ line BAP1 mutations reported to date are predicted to result in protein truncation via nonsense mutation, frameshift caused by insertions/deletions, or alteration of a canonical dinucleotide splice donor/acceptor sequences. ('frameshift', 'Var', (125, 135)) ('BAP1', 'Gene', (24, 28)) ('mutations', 'Var', (29, 38)) ('nonsense mutation', 'Var', (106, 123)) ('insertions/deletions', 'Var', (146, 166)) ('alteration', 'Reg', (171, 181)) ('result', 'Reg', (73, 79)) ('protein truncation', 'MPA', (83, 101)) ('BAP1', 'Gene', '8314', (24, 28)) 48069 22889334 Among them, two families described by report skin-colored melanocytic tumors in all mutation carriers, while carriers from one family and another sporadic case described by Njauw display a similar but distinct nevoid melanoma-like melanocytic proliferations. ('skin-colored melanocytic tumors', 'Disease', (45, 76)) ('melanoma', 'Disease', 'MESH:D008545', (217, 225)) ('mutation', 'Var', (84, 92)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('skin-colored melanocytic tumors', 'Disease', 'MESH:D012878', (45, 76)) ('tumors', 'Phenotype', 'HP:0002664', (70, 76)) ('melanoma', 'Phenotype', 'HP:0002861', (217, 225)) ('melanoma', 'Disease', (217, 225)) 48071 22889334 Here, we report a Danish family with multiple UMM and suspected mesothelioma cases, as well as several other cancers including CMM, breast cancer, and paraganglioma, carrying an apparent missense mutation of BAP1 resulting in the creation of a strong cryptic splice donor, aberrant splicing, and a truncating frameshift of the BAP1 transcript. ('cancers', 'Disease', 'MESH:D009369', (109, 116)) ('missense mutation', 'Var', (187, 204)) ('BAP1', 'Gene', (327, 331)) ('splicing', 'MPA', (282, 290)) ('BAP1', 'Gene', (208, 212)) ('paraganglioma', 'Phenotype', 'HP:0002668', (151, 164)) ('breast cancer', 'Phenotype', 'HP:0003002', (132, 145)) ('mesothelioma', 'Disease', (64, 76)) ('cancers', 'Phenotype', 'HP:0002664', (109, 116)) ('mesothelioma', 'Disease', 'MESH:D008654', (64, 76)) ('cancers', 'Disease', (109, 116)) ('breast cancer', 'Disease', 'MESH:D001943', (132, 145)) ('cancer', 'Phenotype', 'HP:0002664', (109, 115)) ('breast cancer', 'Disease', (132, 145)) ('aberrant', 'MPA', (273, 281)) ('BAP1', 'Gene', '8314', (327, 331)) ('BAP1', 'Gene', '8314', (208, 212)) ('cancer', 'Phenotype', 'HP:0002664', (139, 145)) ('paraganglioma', 'Disease', (151, 164)) ('truncating', 'MPA', (298, 308)) ('paraganglioma', 'Disease', 'MESH:D010235', (151, 164)) 48080 22889334 Among these was a single non-synonymous variant in BAP1 (c.1708C>G, p.Leu570Val), which was also not listed in the sequence derived from approximately 6000 additional human chromosomes annotated by the NHLBI exome project (http://evs.gs.washington.edu/EVS/) or Kaviar (http://db.systemsbiology.net/kaviar/cgi-pub/Kaviar.pl). ('BAP1', 'Gene', (51, 55)) ('p.Leu570Val', 'Mutation', 'p.L570V', (68, 79)) ('c.1708C>G', 'Var', (57, 66)) ('c.1708C>G', 'Mutation', 'c.1708C>G', (57, 66)) ('human', 'Species', '9606', (167, 172)) ('BAP1', 'Gene', '8314', (51, 55)) 48081 22889334 While a conservative leucine to valine change is not consistent with previously reported germ line BAP1 mutations, which were all predicted to result in truncated protein, analysis of the potential effects of the nucleotide change on splicing using the information theory methodology of; https://splice.uwo.ca/) suggested that the variant creates a strong cryptic splice donor site. ('variant', 'Var', (331, 338)) ('BAP1', 'Gene', (99, 103)) ('mutations', 'Var', (104, 113)) ('leucine', 'Chemical', 'MESH:D007930', (21, 28)) ('cryptic splice donor site', 'MPA', (356, 381)) ('valine', 'Chemical', 'MESH:D014633', (32, 38)) ('leucine', 'Var', (21, 28)) ('BAP1', 'Gene', '8314', (99, 103)) 48082 22889334 The predicted incorrectly spliced mRNA would be missing 22 bp from the end of exon 13 and would result in a frameshift and truncation 121 amino acids in advance of the normal stop codon (p.Leu570fs*40). ('p.Leu570fs*40', 'Mutation', 'p.L570fsX40', (187, 200)) ('frameshift', 'Var', (108, 118)) ('truncation', 'MPA', (123, 133)) ('p.Leu570fs*40', 'Var', (187, 200)) ('result in', 'Reg', (96, 105)) 48083 22889334 The c.1708C>G mutation was present in all UMM (III-1, IV-2, and III-8) and CMM (IV-3) cases, the patient with paraganglioma (III-3), the case with both breast cancer and unconfirmed mesothelioma (II-4), the individual with both MFH and a suspected mesothelioma diagnosis (III-12), the case with pulmonary adenocarcinoma (II-1), the unaffected members who volunteered for presymptomatic testing (II-6, III-5, and IV-5), but not in the patient with prolactinoma (IV-4). ('paraganglioma', 'Disease', 'MESH:D010235', (110, 123)) ('patient', 'Species', '9606', (97, 104)) ('prolactinoma', 'Phenotype', 'HP:0040278', (447, 459)) ('c.1708C>G', 'Var', (4, 13)) ('mesothelioma', 'Disease', (248, 260)) ('cancer', 'Phenotype', 'HP:0002664', (159, 165)) ('paraganglioma', 'Phenotype', 'HP:0002668', (110, 123)) ('mesothelioma', 'Disease', 'MESH:D008654', (248, 260)) ('prolactinoma', 'Disease', (447, 459)) ('mesothelioma', 'Disease', (182, 194)) ('mesothelioma', 'Disease', 'MESH:D008654', (182, 194)) ('breast cancer', 'Phenotype', 'HP:0003002', (152, 165)) ('prolactinoma', 'Disease', 'MESH:D015175', (447, 459)) ('patient', 'Species', '9606', (434, 441)) ('pulmonary adenocarcinoma', 'Disease', 'MESH:D000230', (295, 319)) ('pulmonary adenocarcinoma', 'Phenotype', 'HP:0030078', (295, 319)) ('breast cancer', 'Disease', 'MESH:D001943', (152, 165)) ('breast cancer', 'Disease', (152, 165)) ('pulmonary adenocarcinoma', 'Disease', (295, 319)) ('paraganglioma', 'Disease', (110, 123)) ('c.1708C>G', 'Mutation', 'c.1708C>G', (4, 13)) 48084 22889334 We next performed RT-PCR analysis to evaluate whether aberrant splicing of the BAP1 transcript occurs precisely as predicted in carriers of the c.1708C>G mutation. ('c.1708C>G', 'Var', (144, 153)) ('BAP1', 'Gene', '8314', (79, 83)) ('BAP1', 'Gene', (79, 83)) ('c.1708C>G', 'Mutation', 'c.1708C>G', (144, 153)) 48087 22889334 As predicted, blood from individuals harboring the c.1708C>G variant yields both the 124-bp product as well as a second band 22 bp shorter, suggesting that the cryptic splice donor causes aberrant splicing. ('c.1708C>G', 'Mutation', 'c.1708C>G', (51, 60)) ('causes', 'Reg', (181, 187)) ('c.1708C>G', 'Var', (51, 60)) ('splicing', 'MPA', (197, 205)) 48088 22889334 Sequencing of the correctly spliced 124-bp product from c.1708C>G heterozygous individuals indicated no detectable trace of the c.1708C>G allele, suggesting that the majority of transcript from the mutant allele is improperly spliced (Fig. ('c.1708C>G', 'Var', (128, 137)) ('c.1708C>G', 'Mutation', 'c.1708C>G', (56, 65)) ('c.1708C>G', 'Var', (56, 65)) ('c.1708C>G', 'Mutation', 'c.1708C>G', (128, 137)) 48091 22889334 Another UMM case (III-1) displayed monosomy of chromosome 3, but the DNA was of insufficient quantity to genotype c.1708C>G. ('c.1708C>G', 'Var', (114, 123)) ('monosomy', 'MPA', (35, 43)) ('c.1708C>G', 'Mutation', 'c.1708C>G', (114, 123)) 48092 22889334 BAP1 immunohistochemistry was performed on available archival tumor tissues from carriers of this germ line BAP1 mutation but was not successful. ('mutation', 'Var', (113, 121)) ('tumor', 'Phenotype', 'HP:0002664', (62, 67)) ('BAP1', 'Gene', (0, 4)) ('BAP1', 'Gene', '8314', (108, 112)) ('tumor', 'Disease', (62, 67)) ('BAP1', 'Gene', (108, 112)) ('BAP1', 'Gene', '8314', (0, 4)) ('tumor', 'Disease', 'MESH:D009369', (62, 67)) 48094 22889334 Of the eight reported multi-cancer families harboring germ line inactivating BAP1 mutations, including the family reported here, three have both UMM and mesothelioma (or suspected mesothelioma). ('mesothelioma', 'Disease', 'MESH:D008654', (180, 192)) ('mesothelioma', 'Disease', 'MESH:D008654', (153, 165)) ('multi-cancer', 'Disease', (22, 34)) ('multi-cancer', 'Disease', 'MESH:D009369', (22, 34)) ('cancer', 'Phenotype', 'HP:0002664', (28, 34)) ('BAP1', 'Gene', '8314', (77, 81)) ('mutations', 'Var', (82, 91)) ('mesothelioma', 'Disease', (180, 192)) ('mesothelioma', 'Disease', (153, 165)) ('BAP1', 'Gene', (77, 81)) ('UMM', 'Disease', (145, 148)) 48096 22889334 Notably, we identified a patient with paraganglioma carrying a germ line BAP1 mutation and showed that the WT BAP1 allele was lost somatically. ('BAP1', 'Gene', '8314', (73, 77)) ('BAP1', 'Gene', '8314', (110, 114)) ('mutation', 'Var', (78, 86)) ('paraganglioma', 'Phenotype', 'HP:0002668', (38, 51)) ('BAP1', 'Gene', (73, 77)) ('BAP1', 'Gene', (110, 114)) ('paraganglioma', 'Disease', (38, 51)) ('patient', 'Species', '9606', (25, 32)) ('paraganglioma', 'Disease', 'MESH:D010235', (38, 51)) 48098 22889334 We suggest that BAP1 is truly a broad-spectrum tumor suppressor gene and that multi-cancer families and cases of apparently sporadic paragangliomas warrant screening for germ line BAP1 mutations. ('paragangliomas', 'Disease', (133, 147)) ('paragangliomas', 'Disease', 'MESH:D010235', (133, 147)) ('tumor', 'Disease', (47, 52)) ('multi-cancer', 'Disease', (78, 90)) ('paragangliomas', 'Phenotype', 'HP:0002668', (133, 147)) ('BAP1', 'Gene', '8314', (180, 184)) ('tumor', 'Disease', 'MESH:D009369', (47, 52)) ('BAP1', 'Gene', '8314', (16, 20)) ('cancer', 'Phenotype', 'HP:0002664', (84, 90)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('BAP1', 'Gene', (180, 184)) ('mutations', 'Var', (185, 194)) ('paraganglioma', 'Phenotype', 'HP:0002668', (133, 146)) ('BAP1', 'Gene', (16, 20)) ('multi-cancer', 'Disease', 'MESH:D009369', (78, 90)) 48101 22889334 Germ line BAP1 mutations have recently been identified in a few families with melanoma and mesothelioma. ('BAP1', 'Gene', (10, 14)) ('mutations', 'Var', (15, 24)) ('melanoma', 'Phenotype', 'HP:0002861', (78, 86)) ('melanoma and mesothelioma', 'Disease', 'MESH:D008654', (78, 103)) ('identified', 'Reg', (44, 54)) ('BAP1', 'Gene', '8314', (10, 14)) 48102 22889334 We report an apparent missense mutation of BAP1 resulting in aberrant splicing and a truncating frameshift in a family with melanoma, suspected mesothelioma, and paraganglioma. ('melanoma', 'Disease', 'MESH:D008545', (124, 132)) ('melanoma', 'Phenotype', 'HP:0002861', (124, 132)) ('BAP1', 'Gene', (43, 47)) ('melanoma', 'Disease', (124, 132)) ('paraganglioma', 'Disease', 'MESH:D010235', (162, 175)) ('mesothelioma', 'Disease', (144, 156)) ('resulting in', 'Reg', (48, 60)) ('BAP1', 'Gene', '8314', (43, 47)) ('aberrant splicing', 'MPA', (61, 78)) ('paraganglioma', 'Phenotype', 'HP:0002668', (162, 175)) ('truncating', 'MPA', (85, 95)) ('mesothelioma', 'Disease', 'MESH:D008654', (144, 156)) ('missense mutation', 'Var', (22, 39)) ('paraganglioma', 'Disease', (162, 175)) 48243 32026115 Some reports suggest the use of nonselective alpha blockers, such as phentolamine or phenoxybenzamine, for the treatment of gastrointestinal complications of pheochromocytoma. ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (85, 101)) ('gastrointestinal complications of pheochromocytoma', 'Disease', (124, 174)) ('phentolamine', 'Chemical', 'MESH:D010646', (69, 81)) ('phenoxybenzamine', 'Var', (85, 101)) ('gastrointestinal complications', 'Phenotype', 'HP:0004798', (124, 154)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (158, 174)) ('gastrointestinal complications of pheochromocytoma', 'Disease', 'MESH:D010673', (124, 174)) 48251 32026115 Another possibility can be maldistribution of adrenergic receptors, which should be affected by over-secreted catecholamines due to pheochromocytoma and would recover gradually postoperatively, which might be consistent with our patient's recovery time course. ('over-secreted', 'PosReg', (96, 109)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (132, 148)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (132, 148)) ('affected', 'Reg', (84, 92)) ('maldistribution', 'Var', (27, 42)) ('catecholamines', 'Chemical', 'MESH:D002395', (110, 124)) ('adrenergic receptors', 'Protein', (46, 66)) ('patient', 'Species', '9606', (229, 236)) ('pheochromocytoma', 'Disease', (132, 148)) 48254 32026115 MIBG 123I-metaiodobenzylguanidine NR Normal range SVI Stroke volume index SVV Stroke volume variation SO conducted the anesthetic management. ('Stroke', 'Disease', (78, 84)) ('Stroke', 'Disease', 'MESH:D020521', (78, 84)) ('Stroke', 'Phenotype', 'HP:0001297', (54, 60)) ('MIBG', 'Chemical', 'MESH:C492712', (0, 4)) ('Stroke', 'Disease', 'MESH:D020521', (54, 60)) ('123I-metaiodobenzylguanidine', 'Chemical', 'MESH:C492712', (5, 33)) ('Stroke', 'Phenotype', 'HP:0001297', (78, 84)) ('123I-metaiodobenzylguanidine', 'Var', (5, 33)) ('Stroke volume variation', 'Disease', (78, 101)) ('Stroke volume variation', 'Disease', 'MESH:D020521', (78, 101)) ('SO', 'Chemical', 'MESH:C443440', (102, 104)) ('Stroke', 'Disease', (54, 60)) 48274 31778356 RET oncogene mutations in neural crest tissue in thyroid can lead to MTC development. ('RET', 'Gene', '5979', (0, 3)) ('lead to', 'Reg', (61, 68)) ('MTC', 'Phenotype', 'HP:0002865', (69, 72)) ('RET', 'Gene', (0, 3)) ('men', 'Species', '9606', (80, 83)) ('MTC development', 'CPA', (69, 84)) ('mutations', 'Var', (13, 22)) 48301 31778356 According to TNM Staging System of American Joint Committee on Cancer (AJCC) seventh edition (in use at time of thyroidectomy), tumor staging was pT2 N0 Mx - Stage II for medullary thyroid carcinoma and pT3 N0 MX - Stage III for papillary thyroid cancer. ('tumor', 'Disease', 'MESH:D009369', (128, 133)) ('cancer', 'Phenotype', 'HP:0002664', (247, 253)) ('pT2 N0 Mx -', 'Var', (146, 157)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (171, 198)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (229, 253)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (181, 198)) ('TNM', 'Gene', (13, 16)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (181, 198)) ('papillary thyroid cancer', 'Disease', 'MESH:C536915', (229, 253)) ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('Cancer', 'Phenotype', 'HP:0002664', (63, 69)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (239, 253)) ('tumor', 'Disease', (128, 133)) ('TNM', 'Gene', '10178', (13, 16)) ('thyroid carcinoma', 'Disease', (181, 198)) ('carcinoma', 'Phenotype', 'HP:0030731', (189, 198)) ('papillary thyroid cancer', 'Disease', (229, 253)) 48343 31778356 The hypotheses of a common genetic drive was excluded because of different mutations in the two histological types: mutation of RET gene for MTC and mainly BRAF gene for PTC. ('PTC', 'Disease', 'MESH:C536915', (170, 173)) ('BRAF', 'Gene', (156, 160)) ('RET', 'Gene', '5979', (128, 131)) ('MTC', 'Phenotype', 'HP:0002865', (141, 144)) ('mutation', 'Var', (116, 124)) ('PTC', 'Phenotype', 'HP:0002895', (170, 173)) ('PTC', 'Disease', (170, 173)) ('RET', 'Gene', (128, 131)) ('BRAF', 'Gene', '673', (156, 160)) 48455 31234811 Master regulator analysis of paragangliomas carrying SDHx, VHL, or MAML3 genetic alterations Succinate dehydrogenase (SDH) loss and mastermind-like 3 (MAML3) translocation are two clinically important genetic alterations that correlate with increased rates of metastasis in subtypes of human paraganglioma and pheochromocytoma (PPGL) neuroendocrine tumors. ('SDH', 'Gene', (53, 56)) ('tumors', 'Phenotype', 'HP:0002664', (349, 355)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (310, 326)) ('Succinate dehydrogenase', 'Gene', '6390', (93, 116)) ('loss', 'NegReg', (123, 127)) ('MAML3', 'Gene', (151, 156)) ('mastermind-like 3', 'Gene', '55534', (132, 149)) ('tumor', 'Phenotype', 'HP:0002664', (349, 354)) ('neuroendocrine tumors', 'Disease', (334, 355)) ('paraganglioma', 'Phenotype', 'HP:0002668', (292, 305)) ('human', 'Species', '9606', (286, 291)) ('SDH', 'Gene', '6390', (118, 121)) ('MAML3', 'Gene', '55534', (151, 156)) ('paragangliomas', 'Disease', 'MESH:D010235', (29, 43)) ('alterations', 'Var', (81, 92)) ('metastasis', 'CPA', (260, 270)) ('VHL', 'Gene', (59, 62)) ('mastermind-like 3', 'Gene', (132, 149)) ('paragangliomas', 'Phenotype', 'HP:0002668', (29, 43)) ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) ('MAML3', 'Gene', (67, 72)) ('increased', 'PosReg', (241, 250)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (334, 355)) ('SDH', 'Gene', '6390', (53, 56)) ('SDH', 'Gene', (118, 121)) ('MAML3', 'Gene', '55534', (67, 72)) ('paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (292, 326)) ('VHL', 'Gene', '7428', (59, 62)) ('paragangliomas', 'Disease', (29, 43)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (334, 355)) ('Succinate dehydrogenase', 'Gene', (93, 116)) 48458 31234811 We hypothesize that a key to understanding tumorigenesis driven by these genetic alterations is identification of the transcription factors responsible for the observed oncogenic transcriptional changes. ('tumor', 'Disease', 'MESH:D009369', (43, 48)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('tumor', 'Disease', (43, 48)) ('alterations', 'Var', (81, 92)) 48469 31234811 Over the last two decades more than 20 potentially causative genetic alterations have been elucidated for PPGL, including mutations in genes involved in kinase signalling, hypoxic response, and tricarboxylic acid (TCA) cycle metabolism. ('TCA', 'Chemical', 'MESH:D014233', (214, 217)) ('hypoxic', 'Disease', (172, 179)) ('hypoxic', 'Disease', 'MESH:D000860', (172, 179)) ('PPGL', 'Gene', (106, 110)) ('causative', 'Reg', (51, 60)) ('mutations', 'Var', (122, 131)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (194, 212)) 48471 31234811 In particular, patients with mutations in genes encoding components of the succinate dehydrogenase (SDH) complex of the TCA cycle, tend toward shorter metastasis-free survival and shorter overall survival. ('succinate dehydrogenase', 'Gene', (75, 98)) ('patients', 'Species', '9606', (15, 23)) ('SDH', 'Gene', '6390', (100, 103)) ('shorter', 'NegReg', (143, 150)) ('TCA', 'Chemical', 'MESH:D014233', (120, 123)) ('metastasis-free survival', 'CPA', (151, 175)) ('mutations', 'Var', (29, 38)) ('SDH', 'Gene', (100, 103)) ('shorter', 'NegReg', (180, 187)) ('overall survival', 'CPA', (188, 204)) ('succinate dehydrogenase', 'Gene', '6390', (75, 98)) 48472 31234811 Recently, a large-scale integrative genomic analysis of PPGL through The Cancer Genome Atlas (TCGA) Project described another important genetic alteration in PPGL: a translocation involving the MAML3 gene. ('Cancer Genome Atlas', 'Disease', 'MESH:D009369', (73, 92)) ('PPGL', 'Gene', (56, 60)) ('PPGL', 'Gene', (158, 162)) ('translocation', 'Var', (166, 179)) ('MAML3', 'Gene', '55534', (194, 199)) ('Cancer Genome Atlas', 'Disease', (73, 92)) ('MAML3', 'Gene', (194, 199)) ('Cancer', 'Phenotype', 'HP:0002664', (73, 79)) 48474 31234811 Collectively, this study estimated that ~ 11% of PPGL patients carry germline mutations in the four genes (SDHA, SDHB, SDHC, SDHD; SDHx) encoding SDH subunits, and ~ 5% of PPGL patients have tumor DNA carrying the novel MAML3 translocation. ('SDHA', 'Gene', '6389', (107, 111)) ('patients', 'Species', '9606', (54, 62)) ('tumor', 'Phenotype', 'HP:0002664', (191, 196)) ('SDH', 'Gene', '6390', (119, 122)) ('SDH', 'Gene', (107, 110)) ('SDH', 'Gene', (146, 149)) ('SDH', 'Gene', (131, 134)) ('SDH', 'Gene', (113, 116)) ('SDHC', 'Gene', '6391', (119, 123)) ('mutations', 'Var', (78, 87)) ('MAML3', 'Gene', (220, 225)) ('SDHx', 'Chemical', '-', (131, 135)) ('SDHD', 'Gene', '6392', (125, 129)) ('SDH', 'Gene', (119, 122)) ('SDHB', 'Gene', '6390', (113, 117)) ('SDH', 'Gene', '6390', (125, 128)) ('MAML3', 'Gene', '55534', (220, 225)) ('tumor', 'Disease', (191, 196)) ('SDHD', 'Gene', (125, 129)) ('SDHC', 'Gene', (119, 123)) ('tumor', 'Disease', 'MESH:D009369', (191, 196)) ('SDH', 'Gene', '6390', (107, 110)) ('patients', 'Species', '9606', (177, 185)) ('SDH', 'Gene', '6390', (131, 134)) ('SDHB', 'Gene', (113, 117)) ('SDH', 'Gene', '6390', (146, 149)) ('SDHA', 'Gene', (107, 111)) ('SDH', 'Gene', '6390', (113, 116)) ('SDH', 'Gene', (125, 128)) 48482 31234811 In the latter case, hypoxic signalling is thought to be constitutively activated due to a defect in VHL, the E3 ubiquitin ligase responsible for ubiquitination of hydroxylated HIF-alpha subunits, normally targeting them for proteasomal degradation. ('defect', 'Var', (90, 96)) ('activated', 'PosReg', (71, 80)) ('hypoxic', 'Disease', (20, 27)) ('hypoxic', 'Disease', 'MESH:D000860', (20, 27)) ('VHL', 'Gene', (100, 103)) ('VHL', 'Gene', '7428', (100, 103)) 48485 31234811 We are ultimately interested in understanding the mechanistic linkage between specific gene defects and PPGL tumorigenesis. ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('defects', 'Var', (92, 99)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('PPGL', 'Gene', (104, 108)) ('tumor', 'Disease', (109, 114)) 48513 31234811 Stable SDHC-loss and hemizygous control cell lines were plated into 96-well plates at a density of approximately 20,000 cells per well in 100 muL of DMEM medium containing 10% FBS, penicillin (100 units/mL), streptomycin (100 mug/mL), 1 mM pyruvate, 1X MEM NEAA, and 10 mM HEPES buffer (pH 7.2-7.5) and cultured at 21% O2 and 5% CO2. ('HEPES', 'Chemical', 'MESH:D006531', (273, 278)) ('penicillin', 'Chemical', 'MESH:D010406', (181, 191)) ('pyruvate', 'Chemical', 'MESH:D019289', (240, 248)) ('DMEM medium', 'Chemical', '-', (149, 160)) ('CO2', 'Chemical', '-', (329, 332)) ('streptomycin', 'Chemical', 'MESH:D013307', (208, 220)) ('100', 'Var', (222, 225)) ('O2', 'Chemical', '-', (319, 321)) ('O2', 'Chemical', '-', (330, 332)) ('SDHC-loss', 'Disease', 'MESH:D015431', (7, 16)) ('NEAA', 'Chemical', '-', (257, 261)) ('SDHC-loss', 'Disease', (7, 16)) 48548 31234811 Importantly, this suggests that HIF-related transcriptional dysregulation is detectible, but that it inadequately accounts for the majority of transcriptional perturbations observed in these "pseudohypoxic" tumor subtypes, and that dysregulation of other transcription factors may play a much more important role in driving oncogenic transcriptomic patterns than previously appreciated. ('dysregulation', 'Var', (232, 245)) ('tumor', 'Disease', 'MESH:D009369', (207, 212)) ('tumor', 'Phenotype', 'HP:0002664', (207, 212)) ('hypoxic', 'Disease', 'MESH:D000860', (198, 205)) ('tumor', 'Disease', (207, 212)) ('hypoxic', 'Disease', (198, 205)) 48550 31234811 This is particularly intriguing because the reported MAML3 translocations involve chr18~chr4 fusion (TCF4~MAML3 gene fusion) or chr17~chr4 fusion (UBTF-MAML3 gene fusion), with the IRX4 locus on chromosome 5 being unaffected in either case. ('MAML3', 'Gene', '55534', (106, 111)) ('IRX4', 'Gene', '50805', (181, 185)) ('chr17~chr4', 'Var', (128, 138)) ('MAML3', 'Gene', (106, 111)) ('UBTF', 'Gene', (147, 151)) ('chr18~chr4', 'Gene', (82, 92)) ('TCF4', 'Gene', (101, 105)) ('TCF4', 'Gene', '6925', (101, 105)) ('MAML3', 'Gene', '55534', (152, 157)) ('MAML3', 'Gene', (152, 157)) ('IRX4', 'Gene', (181, 185)) ('UBTF', 'Gene', '7343', (147, 151)) ('MAML3', 'Gene', '55534', (53, 58)) ('MAML3', 'Gene', (53, 58)) 48554 31234811 These data support the notion that subnetwork #2 is likely important for cell survival, and additionally, that modulation of subnetwork #1 may be a mechanism by which tumor cells acquire an invasive phenotype. ('modulation', 'Var', (111, 121)) ('subnetwork #1', 'Gene', (125, 138)) ('invasive phenotype', 'CPA', (190, 208)) ('tumor', 'Disease', 'MESH:D009369', (167, 172)) ('tumor', 'Phenotype', 'HP:0002664', (167, 172)) ('acquire', 'PosReg', (179, 186)) ('tumor', 'Disease', (167, 172)) 48573 31234811 We then specifically considered EPAS1, a transcription factor of much interest to the field, testing the hypothesis that tumors originating from different SDH subunit mutations have variable EPAS1 activity. ('EPAS1', 'Gene', (191, 196)) ('SDH', 'Gene', '6390', (155, 158)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('tumors', 'Disease', (121, 127)) ('tumors', 'Phenotype', 'HP:0002664', (121, 127)) ('mutations', 'Var', (167, 176)) ('activity', 'MPA', (197, 205)) ('tumors', 'Disease', 'MESH:D009369', (121, 127)) ('SDH', 'Gene', (155, 158)) ('EPAS1', 'Gene', '2034', (32, 37)) ('EPAS1', 'Gene', '2034', (191, 196)) ('EPAS1', 'Gene', (32, 37)) 48574 31234811 3e, revealed similarly elevated levels of EPAS1 activity in SDHB-null, SDHC-null, and SDHD-null PPGL tumors compared to those attributable to RET of NF1 gain-of-function mutations. ('gain-of-function', 'PosReg', (153, 169)) ('SDHD-null PPGL tumors', 'Disease', 'MESH:C564833', (86, 107)) ('SDHC', 'Gene', '6391', (71, 75)) ('activity', 'MPA', (48, 56)) ('RET', 'Gene', '5979', (142, 145)) ('mutations', 'Var', (170, 179)) ('elevated', 'PosReg', (23, 31)) ('SDHB', 'Gene', '6390', (60, 64)) ('SDHD-null PPGL tumors', 'Disease', (86, 107)) ('SDHB', 'Gene', (60, 64)) ('EPAS1', 'Gene', '2034', (42, 47)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('EPAS1', 'Gene', (42, 47)) ('RET', 'Gene', (142, 145)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('NF1', 'Gene', (149, 152)) ('NF1', 'Gene', '4763', (149, 152)) ('SDHC', 'Gene', (71, 75)) 48593 31234811 This analysis revealed five potentially conserved MRs, a number that is higher than would be predicted by random chance, suggesting that perturbation of these MRs represents a conserved biological response to SDH loss (Fig. ('SDH loss', 'Disease', (209, 217)) ('perturbation', 'Var', (137, 149)) ('SDH loss', 'Disease', 'MESH:D015431', (209, 217)) 48603 31234811 A second subset of synergistic partners (FOS, HMX2, HOXA11, ARNTL, RXRG, ZIC2, POU3F2, TAL1, EHF, POU3F1, KLF15, NR1H3, NFE2L3, AR, and BCL6B) was inferred for which ZFP423 binding attenuates the general transcription-activating activity of these TFs. ('RXRG', 'Gene', '6258', (67, 71)) ('FOS', 'Gene', (41, 44)) ('NFE2L3', 'Gene', (120, 126)) ('TAL1', 'Gene', (87, 91)) ('EHF', 'Gene', '26298', (93, 96)) ('FOS', 'Gene', '2353', (41, 44)) ('NR1H3', 'Gene', (113, 118)) ('KLF15', 'Gene', '28999', (106, 111)) ('RXRG', 'Gene', (67, 71)) ('ZFP423', 'Var', (166, 172)) ('HOXA11', 'Gene', (52, 58)) ('POU3F2', 'Gene', '5454', (79, 85)) ('BCL6B', 'Gene', '255877', (136, 141)) ('HMX2', 'Gene', '3167', (46, 50)) ('POU3F2', 'Gene', (79, 85)) ('HMX2', 'Gene', (46, 50)) ('NFE2L3', 'Gene', '9603', (120, 126)) ('general transcription-activating activity', 'MPA', (196, 237)) ('TAL1', 'Gene', '6886', (87, 91)) ('BCL6B', 'Gene', (136, 141)) ('POU3F1', 'Gene', (98, 104)) ('ZIC2', 'Gene', (73, 77)) ('HOXA11', 'Gene', '3207', (52, 58)) ('attenuates', 'NegReg', (181, 191)) ('ZIC2', 'Gene', '7546', (73, 77)) ('KLF15', 'Gene', (106, 111)) ('NR1H3', 'Gene', '10062', (113, 118)) ('binding', 'Interaction', (173, 180)) ('ARNTL', 'Gene', '406', (60, 65)) ('ARNTL', 'Gene', (60, 65)) ('POU3F1', 'Gene', '5453', (98, 104)) ('EHF', 'Gene', (93, 96)) 48629 31234811 The differentiation responses of SH-SY5Y to retinoic acid have been previously well-characterized, with resultant phenotypic changes in neurite outgrowth that are readily apparent through morphological image analysis that has been broadly used to probe the pathways involved in neuronal differentiation. ('retinoic acid', 'Chemical', 'MESH:D014212', (44, 57)) ('SH-SY5Y', 'CellLine', 'CVCL:0019', (33, 40)) ('changes', 'Reg', (125, 132)) ('SH-SY5Y', 'Var', (33, 40)) 48636 31234811 This, in turn, suggests that perturbation of TF activities plays a larger role in modulating oncogenic gene expression in these tumors than previously appreciated. ('modulating', 'Reg', (82, 92)) ('oncogenic gene expression', 'MPA', (93, 118)) ('perturbation', 'Var', (29, 41)) ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('tumors', 'Disease', (128, 134)) ('tumors', 'Disease', 'MESH:D009369', (128, 134)) ('tumors', 'Phenotype', 'HP:0002664', (128, 134)) 48638 31234811 Since the molecular defect in VHL-loss tumors is mutation of the VHL E3 ubiquitin ligase downstream of the prolylhydroxylases believed to be poisoned by succinate accumulation, one potential hypothesis is that these conserved MRs are previously unappreciated direct or indirect clients of both prolylhydroxylases and VHL E3 ubiquitin ligase. ('VHL', 'Gene', '7428', (65, 68)) ('VHL-loss tumors', 'Disease', (30, 45)) ('VHL', 'Gene', '7428', (317, 320)) ('tumors', 'Phenotype', 'HP:0002664', (39, 45)) ('succinate', 'Chemical', 'MESH:D019802', (153, 162)) ('VHL', 'Gene', (30, 33)) ('mutation', 'Var', (49, 57)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('VHL', 'Gene', '7428', (30, 33)) ('VHL', 'Gene', (65, 68)) ('VHL-loss tumors', 'Disease', 'MESH:D006623', (30, 45)) ('VHL', 'Gene', (317, 320)) 48649 31234811 Categories of other potential mechanisms include dysregulation of other TFs, classical epigenomic derangement via dioxygenase poisoning of TET DNA demethylases and Jumonji domain-containing histone demethylases, as well as dysregulation of cellular acylation patterns, as recently described. ('poisoning', 'Disease', 'MESH:D011041', (126, 135)) ('cellular acylation patterns', 'MPA', (240, 267)) ('dysregulation', 'Var', (223, 236)) ('dysregulation', 'Var', (49, 62)) ('poisoning', 'Disease', (126, 135)) 48684 30540124 However, a much higher incidence of adrenal tumors (>15 times) has been demonstrated in the pediatric population in south and southeastern Brazil, and these tumors are associated with a specific germline mutation in TP53 . ('TP53', 'Gene', (216, 220)) ('tumors', 'Disease', (44, 50)) ('associated', 'Reg', (168, 178)) ('adrenal tumors', 'Disease', 'MESH:D000310', (36, 50)) ('tumors', 'Disease', 'MESH:D009369', (44, 50)) ('tumors', 'Phenotype', 'HP:0002664', (157, 163)) ('tumors', 'Phenotype', 'HP:0002664', (44, 50)) ('tumors', 'Disease', (157, 163)) ('tumors', 'Disease', 'MESH:D009369', (157, 163)) ('tumor', 'Phenotype', 'HP:0002664', (157, 162)) ('adrenal tumors', 'Disease', (36, 50)) ('germline mutation', 'Var', (195, 212)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('TP53', 'Gene', '7157', (216, 220)) 48689 30540124 In south and southeastern Brazil, approximately 78% of children and 13% of adults with adrenal tumors harbor a specific germline mutation (p.R337H) of the p53 tumor suppressor. ('p.R337H', 'Mutation', 'rs121912664', (139, 146)) ('p53', 'Gene', (155, 158)) ('p53', 'Gene', '7157', (155, 158)) ('adrenal tumors', 'Disease', 'MESH:D000310', (87, 101)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) ('adrenal tumors', 'Disease', (87, 101)) ('tumor', 'Disease', 'MESH:D009369', (95, 100)) ('tumor', 'Disease', (159, 164)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('p.R337H', 'Var', (139, 146)) ('tumor', 'Disease', 'MESH:D009369', (159, 164)) ('tumor', 'Disease', (95, 100)) ('children', 'Species', '9606', (55, 63)) 48690 30540124 A founder effect has been demonstrated in the great majority of pediatric Brazilian patients with adrenocortical tumors caused by this p53 mutation. ('mutation', 'Var', (139, 147)) ('patients', 'Species', '9606', (84, 92)) ('p53', 'Gene', (135, 138)) ('caused by', 'Reg', (120, 129)) ('adrenocortical tumors', 'Disease', (98, 119)) ('p53', 'Gene', '7157', (135, 138)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('adrenocortical tumors', 'Disease', 'MESH:D018268', (98, 119)) ('tumors', 'Phenotype', 'HP:0002664', (113, 119)) 48696 30540124 LFS is a cancer predisposition syndrome usually caused by an inherited TP53 gene mutation and is characterized by a high occurrence of sarcomas, early onset breast cancer, brain cancer and leukemia. ('cancer', 'Disease', (9, 15)) ('cancer', 'Phenotype', 'HP:0002664', (178, 184)) ('sarcomas', 'Disease', 'MESH:D012509', (135, 143)) ('breast cancer', 'Phenotype', 'HP:0003002', (157, 170)) ('cancer', 'Phenotype', 'HP:0002664', (9, 15)) ('sarcomas', 'Phenotype', 'HP:0100242', (135, 143)) ('cancer', 'Disease', 'MESH:D009369', (164, 170)) ('brain cancer', 'Phenotype', 'HP:0030692', (172, 184)) ('sarcomas', 'Disease', (135, 143)) ('breast cancer', 'Disease', 'MESH:D001943', (157, 170)) ('LFS', 'Disease', (0, 3)) ('breast cancer', 'Disease', (157, 170)) ('leukemia', 'Phenotype', 'HP:0001909', (189, 197)) ('brain cancer', 'Disease', 'MESH:D001932', (172, 184)) ('cancer', 'Disease', 'MESH:D009369', (178, 184)) ('TP53', 'Gene', '7157', (71, 75)) ('cancer', 'Disease', 'MESH:D009369', (9, 15)) ('caused by', 'Reg', (48, 57)) ('leukemia', 'Disease', (189, 197)) ('mutation', 'Var', (81, 89)) ('leukemia', 'Disease', 'MESH:D007938', (189, 197)) ('cancer', 'Disease', (164, 170)) ('brain cancer', 'Disease', (172, 184)) ('cancer', 'Phenotype', 'HP:0002664', (164, 170)) ('cancer', 'Disease', (178, 184)) ('TP53', 'Gene', (71, 75)) 48698 30540124 Somatic TP53 mutations have been identified in 25-35% of sporadic ACCs. ('mutations', 'Var', (13, 22)) ('identified', 'Reg', (33, 43)) ('TP53', 'Gene', '7157', (8, 12)) ('TP53', 'Gene', (8, 12)) 48699 30540124 Nevertheless, these mutations represent a late event during carcinogenesis and have been associated with larger tumors and more advanced disease. ('associated', 'Reg', (89, 99)) ('carcinogenesis', 'Disease', 'MESH:D063646', (60, 74)) ('tumors', 'Disease', (112, 118)) ('tumors', 'Phenotype', 'HP:0002664', (112, 118)) ('carcinogenesis', 'Disease', (60, 74)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('mutations', 'Var', (20, 29)) ('tumors', 'Disease', 'MESH:D009369', (112, 118)) 48700 30540124 Somatic mutations in the TP53 gene are a predictor of poor overall survival in adults with ACC. ('Somatic mutations', 'Var', (0, 17)) ('TP53', 'Gene', '7157', (25, 29)) ('TP53', 'Gene', (25, 29)) 48704 30540124 Genetic or epigenetic alterations in the 11p15 region may alter the expression of the CDKN1C, IGF2 and H19 genes, which are structurally organized in a cluster, increasing IGF2 expression and inactivating the CDKN1C and H19 genes, which are a negative cell cycle regulator and a transcriptional repressor of IGF2, respectively. ('expression', 'MPA', (68, 78)) ('IGF2', 'Gene', (94, 98)) ('alter', 'Reg', (58, 63)) ('CDKN1C', 'Gene', (209, 215)) ('expression', 'MPA', (177, 187)) ('IGF2', 'Gene', (172, 176)) ('IGF2', 'Gene', '3481', (308, 312)) ('CDKN1C', 'Gene', '1028', (86, 92)) ('H19', 'Gene', (103, 106)) ('epigenetic alterations', 'Var', (11, 33)) ('IGF2', 'Gene', '3481', (94, 98)) ('H19', 'Gene', (220, 223)) ('H19', 'Gene', '283120', (103, 106)) ('IGF2', 'Gene', '3481', (172, 176)) ('CDKN1C', 'Gene', (86, 92)) ('CDKN1C', 'Gene', '1028', (209, 215)) ('H19', 'Gene', '283120', (220, 223)) ('inactivating', 'NegReg', (192, 204)) ('increasing', 'PosReg', (161, 171)) ('IGF2', 'Gene', (308, 312)) 48708 30540124 Furthermore, the difference between BUB1B and PINK1 gene expression was a significant predictor of OS in adults. ('expression', 'MPA', (57, 67)) ('PINK1', 'Gene', '65018', (46, 51)) ('PINK1', 'Gene', (46, 51)) ('predictor', 'Reg', (86, 95)) ('BUB1B', 'Gene', '701', (36, 41)) ('BUB1B', 'Gene', (36, 41)) ('difference', 'Var', (17, 27)) 48725 30540124 High levels of Ki67 have also been associated with worse OS in patients with advanced disease and can help in decision-making regarding treatment. ('men', 'Species', '9606', (141, 144)) ('worse OS', 'Disease', (51, 59)) ('associated', 'Reg', (35, 45)) ('help', 'Reg', (102, 106)) ('patients', 'Species', '9606', (63, 71)) ('Ki67', 'Var', (15, 19)) 48757 30540124 In addition to its use in the adjuvant setting, mitotane is associated with a 30% objective response rate among patients with metastatic disease in retrospective studies. ('mitotane', 'Chemical', 'MESH:D008939', (48, 56)) ('metastatic disease', 'Disease', (126, 144)) ('patients', 'Species', '9606', (112, 120)) ('mitotane', 'Var', (48, 56)) 48765 30540124 Mitotane also increases the concentrations of cortisol-binding globulin hormone (CBG), steroid-binding globulin (SHBG), and thyroxine-binding globulin (TBG). ('CBG', 'Gene', '866', (81, 84)) ('Mitotane', 'Var', (0, 8)) ('cortisol-binding globulin hormone', 'MPA', (46, 79)) ('increases', 'PosReg', (14, 23)) ('SHBG', 'Gene', '6462', (113, 117)) ('steroid-binding globulin', 'MPA', (87, 111)) ('CBG', 'Gene', (81, 84)) ('thyroxine-binding globulin', 'Gene', '6906', (124, 150)) ('Mitotane', 'Chemical', 'MESH:D008939', (0, 8)) ('TBG', 'Gene', (152, 155)) ('thyroxine-binding globulin', 'Gene', (124, 150)) ('steroid', 'Chemical', 'MESH:D013256', (87, 94)) ('SHBG', 'Gene', (113, 117)) ('TBG', 'Gene', '6906', (152, 155)) ('concentrations', 'MPA', (28, 42)) 48766 30540124 Furthermore, mitotane may impair pituitary gland function by reducing TSH secretion with consequent hypothyroidism and gonadal function causing hypergonadotropic hypogonadism. ('reducing', 'NegReg', (61, 69)) ('hypogonadism', 'Phenotype', 'HP:0000135', (162, 174)) ('reducing TSH secretion with consequent hypothyroidism', 'Phenotype', 'HP:0008245', (61, 114)) ('reducing TSH', 'Phenotype', 'HP:0031098', (61, 73)) ('hypothyroidism', 'Disease', 'MESH:D007037', (100, 114)) ('mitotane', 'Chemical', 'MESH:D008939', (13, 21)) ('hypothyroidism', 'Disease', (100, 114)) ('gonadal function', 'CPA', (119, 135)) ('TSH', 'Chemical', '-', (70, 73)) ('hypothyroidism', 'Phenotype', 'HP:0000821', (100, 114)) ('TSH secretion', 'MPA', (70, 83)) ('hypergonadotropic hypogonadism', 'Phenotype', 'HP:0000815', (144, 174)) ('mitotane', 'Var', (13, 21)) ('impair', 'NegReg', (26, 32)) ('hypogonadism', 'Disease', (162, 174)) ('pituitary', 'CPA', (33, 42)) ('hypogonadism', 'Disease', 'MESH:D007006', (162, 174)) 48770 30540124 Notably, mitotane induces adrenal insufficiency due to the inhibition of steroidogenesis enzymes. ('inhibition', 'NegReg', (59, 69)) ('steroidogenesis enzymes', 'Enzyme', (73, 96)) ('adrenal insufficiency', 'Disease', 'MESH:D000309', (26, 47)) ('steroid', 'Chemical', 'MESH:D013256', (73, 80)) ('adrenal insufficiency', 'Phenotype', 'HP:0000846', (26, 47)) ('mitotane', 'Var', (9, 17)) ('induces', 'Reg', (18, 25)) ('adrenal insufficiency', 'Disease', (26, 47)) ('mitotane', 'Chemical', 'MESH:D008939', (9, 17)) 48789 30540124 These susceptibility genes can be divided into two clusters: cluster 1 tumors include those with mutations of genes encoding the von Hippel-Lindau (VHL) suppressor, the four subunits of the succinate dehydrogenase complex (SDHA, SDHB, SDHC, and SDHD), and less commonly, the enzyme responsible for flavination of the SDHA subunit (SDHAF2), fumarate hydratase, malate dehydrogenase 2, and prolyl hydroxylases 1 and 2. ('mutations', 'Var', (97, 106)) ('SDHB', 'Gene', '6390', (229, 233)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('tumors', 'Disease', (71, 77)) ('SDHC', 'Gene', (235, 239)) ('SDHD', 'Gene', '6392', (245, 249)) ('fumarate hydratase', 'Gene', '2271', (340, 358)) ('SDHB', 'Gene', (229, 233)) ('VHL', 'Disease', 'MESH:D006623', (148, 151)) ('tumors', 'Disease', 'MESH:D009369', (71, 77)) ('von Hippel-Lindau', 'Gene', (129, 146)) ('malate dehydrogenase 2', 'Gene', (360, 382)) ('SDHD', 'Gene', (245, 249)) ('SDHC', 'Gene', '6391', (235, 239)) ('malate dehydrogenase 2', 'Gene', '4191', (360, 382)) ('von Hippel-Lindau', 'Gene', '7428', (129, 146)) ('fumarate hydratase', 'Gene', (340, 358)) ('SDHAF2', 'Gene', (331, 337)) ('SDHAF2', 'Gene', '54949', (331, 337)) ('VHL', 'Disease', (148, 151)) 48790 30540124 These genetic alterations result in stabilization of hypoxia-inducible factors and activation of the hypoxia signaling pathways. ('hypoxia', 'Disease', (53, 60)) ('hypoxia', 'Disease', 'MESH:D000860', (53, 60)) ('hypoxia', 'Disease', (101, 108)) ('stabilization', 'MPA', (36, 49)) ('hypoxia', 'Disease', 'MESH:D000860', (101, 108)) ('genetic alterations', 'Var', (6, 25)) ('activation', 'PosReg', (83, 93)) 48791 30540124 Cluster 2 includes tumors with mutations of the neurofibromatosis type 1 (NF1) tumor suppressor gene, the rearranged during transfection (RET) proto-oncogene, genes encoding transmembrane protein 127 (TMEM127) and MYC-associated factor X (MAX) (Table 3). ('tumors', 'Disease', (19, 25)) ('transmembrane protein 127', 'Gene', (174, 199)) ('mutations', 'Var', (31, 40)) ('neurofibromatosis type 1 (NF1) tumor', 'Disease', 'MESH:C537392', (48, 84)) ('RET', 'Gene', '5979', (138, 141)) ('tumors', 'Disease', 'MESH:D009369', (19, 25)) ('transmembrane protein 127', 'Gene', '55654', (174, 199)) ('TMEM127', 'Gene', (201, 208)) ('TMEM127', 'Gene', '55654', (201, 208)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('MYC-associated factor X', 'Gene', '4149', (214, 237)) ('MYC-associated factor X', 'Gene', (214, 237)) ('RET', 'Gene', (138, 141)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('MAX', 'Gene', '4149', (239, 242)) ('MAX', 'Gene', (239, 242)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (48, 65)) 48794 30540124 Most PPGLs hypersecrete catecholamines and are associated with increased cardiovascular morbidity and mortality. ('PPGLs', 'Chemical', '-', (5, 10)) ('PPGLs', 'Var', (5, 10)) ('cardiovascular morbidity', 'Phenotype', 'HP:0001626', (73, 97)) ('increased', 'PosReg', (63, 72)) ('associated with', 'Reg', (47, 62)) ('cardiovascular', 'Disease', (73, 87)) ('hypersecrete catecholamines', 'MPA', (11, 38)) ('catecholamines', 'Chemical', 'MESH:D002395', (24, 38)) 48795 30540124 Additionally, PPGLs may cause mass-effect symptoms and have malignant potential. ('cause', 'Reg', (24, 29)) ('PPGLs', 'Var', (14, 19)) ('PPGLs', 'Chemical', '-', (14, 19)) ('malignant potential', 'CPA', (60, 79)) ('mass-effect symptoms', 'Disease', (30, 50)) 48800 30540124 Patients who are young and those with larger tumors (>6 cm), positive genetic testing (especially SDHB) or paragangliomas have an increased risk of metastasis and require long-term follow-up. ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('tumors', 'Disease', (45, 51)) ('tumors', 'Phenotype', 'HP:0002664', (45, 51)) ('paragangliomas', 'Disease', (107, 121)) ('metastasis', 'CPA', (148, 158)) ('SDHB', 'Gene', '6390', (98, 102)) ('paragangliomas', 'Disease', 'MESH:D010235', (107, 121)) ('tumors', 'Disease', 'MESH:D009369', (45, 51)) ('SDHB', 'Gene', (98, 102)) ('Patients', 'Species', '9606', (0, 8)) ('paragangliomas', 'Phenotype', 'HP:0002668', (107, 121)) ('paraganglioma', 'Phenotype', 'HP:0002668', (107, 120)) ('positive genetic testing', 'Var', (61, 85)) 48802 30540124 In a recent study, 76% of patients with malignant PPGLs had germline mutations in susceptibility genes for PPGL (SDHB, 44%; SDHD, 8%; VHL, 12%; NF1, 12%; and RET, 0%). ('mutations', 'Var', (69, 78)) ('SDHB', 'Gene', '6390', (113, 117)) ('PPGL', 'Gene', (107, 111)) ('RET', 'Gene', (158, 161)) ('VHL', 'Disease', (134, 137)) ('PPGLs', 'Chemical', '-', (50, 55)) ('VHL', 'Disease', 'MESH:D006623', (134, 137)) ('SDHD', 'Gene', '6392', (124, 128)) ('SDHB', 'Gene', (113, 117)) ('patients', 'Species', '9606', (26, 34)) ('RET', 'Gene', '5979', (158, 161)) ('NF1', 'Gene', '4763', (144, 147)) ('NF1', 'Gene', (144, 147)) ('SDHD', 'Gene', (124, 128)) 48803 30540124 TMEM127 and MAX mutations have also been described in patients with malignant PPGLs. ('described', 'Reg', (41, 50)) ('PPGLs', 'Chemical', '-', (78, 83)) ('patients', 'Species', '9606', (54, 62)) ('TMEM127', 'Gene', '55654', (0, 7)) ('mutations', 'Var', (16, 25)) ('MAX', 'Gene', '4149', (12, 15)) ('MAX', 'Gene', (12, 15)) ('PPGLs', 'Disease', (78, 83)) ('TMEM127', 'Gene', (0, 7)) 48812 30540124 123I-MIBG is inferior to 18F-FDG-PET or somatostatin receptor imaging for paragangliomas or metastatic disease associated with SDHx-related tumors. ('paragangliomas', 'Disease', (74, 88)) ('paragangliomas', 'Disease', 'MESH:D010235', (74, 88)) ('paragangliomas', 'Phenotype', 'HP:0002668', (74, 88)) ('123I-MIBG', 'Var', (0, 9)) ('tumors', 'Disease', (140, 146)) ('tumors', 'Disease', 'MESH:D009369', (140, 146)) ('tumors', 'Phenotype', 'HP:0002664', (140, 146)) ('SDHx', 'Chemical', '-', (127, 131)) ('123I-MIBG', 'Chemical', '-', (0, 9)) ('18F-FDG', 'Chemical', '-', (25, 32)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('paraganglioma', 'Phenotype', 'HP:0002668', (74, 87)) ('metastatic disease', 'CPA', (92, 110)) 48824 30540124 Patients with pheochromocytomas larger than 6 cm or paragangliomas of any size and/or those who are carriers of SDHB mutations need imaging studies to localize metastatic disease. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (14, 30)) ('mutations', 'Var', (117, 126)) ('pheochromocytomas', 'Disease', (14, 31)) ('paragangliomas', 'Disease', (52, 66)) ('paragangliomas', 'Disease', 'MESH:D010235', (52, 66)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (14, 31)) ('SDHB', 'Gene', '6390', (112, 116)) ('paraganglioma', 'Phenotype', 'HP:0002668', (52, 65)) ('paragangliomas', 'Phenotype', 'HP:0002668', (52, 66)) ('SDHB', 'Gene', (112, 116)) ('Patients', 'Species', '9606', (0, 8)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (14, 31)) ('carriers', 'Reg', (100, 108)) 48843 30540124 Two small studies of 90Y-DOTATOC and 177Lu-DOTATOC showed tumor response rates of 8% and 17%, respectively. ('tumor', 'Phenotype', 'HP:0002664', (58, 63)) ('tumor', 'Disease', (58, 63)) ('90Y-DOTATOC', 'Var', (21, 32)) ('tumor', 'Disease', 'MESH:D009369', (58, 63)) ('177Lu-DOTATOC', 'Var', (37, 50)) 48849 30540124 In this study, most of the patients who exhibited a positive response to sunitinib therapy had SDHB germline mutations. ('sunitinib', 'Chemical', 'MESH:D000077210', (73, 82)) ('SDHB', 'Gene', '6390', (95, 99)) ('patients', 'Species', '9606', (27, 35)) ('SDHB', 'Gene', (95, 99)) ('germline mutations', 'Var', (100, 118)) 48852 30540124 Among PPGL patients, SDHB and SDHD mutation carriers have a significant risk of recurrence. ('SDHB', 'Gene', '6390', (21, 25)) ('SDHD', 'Gene', '6392', (30, 34)) ('SDHD', 'Gene', (30, 34)) ('PPGL', 'Gene', (6, 10)) ('mutation', 'Var', (35, 43)) ('patients', 'Species', '9606', (11, 19)) ('SDHB', 'Gene', (21, 25)) 48859 29618619 Patients with homozygous deletion of interferons exhibited significantly shortened overall or disease-free survival time in a number of cancer types, whereas patients with homozygous deletion of defensins did not significantly associate with worse overall or disease-free survival. ('cancer', 'Phenotype', 'HP:0002664', (136, 142)) ('cancer', 'Disease', 'MESH:D009369', (136, 142)) ('disease-free survival time', 'CPA', (94, 120)) ('shortened', 'NegReg', (73, 82)) ('interferon', 'Gene', (37, 47)) ('Patients', 'Species', '9606', (0, 8)) ('cancer', 'Disease', (136, 142)) ('deletion', 'Var', (25, 33)) ('patients', 'Species', '9606', (158, 166)) ('interferon', 'Gene', '3439', (37, 47)) 48861 29618619 Further analysis of the whole exomes of 109 melanoma patients demonstrated that the homozygous deletion of interferon (P = 0.0029, OR = 11.8) and defensin (P = 0.06, OR = 2.79) genes are significantly associated with resistance to anti-CTLA-4 (Cytotoxic T-Lymphocyte Associated protein 4) immunotherapy. ('interferon', 'Gene', (107, 117)) ('CTLA-4', 'Gene', '1493', (236, 242)) ('deletion', 'Var', (95, 103)) ('patients', 'Species', '9606', (53, 61)) ('melanoma', 'Phenotype', 'HP:0002861', (44, 52)) ('melanoma', 'Disease', (44, 52)) ('melanoma', 'Disease', 'MESH:D008545', (44, 52)) ('CTLA-4', 'Gene', (236, 242)) ('Cytotoxic T-Lymphocyte Associated protein 4', 'Gene', '1493', (244, 287)) ('interferon', 'Gene', '3439', (107, 117)) ('associated with', 'Reg', (201, 216)) ('Cytotoxic T-Lymphocyte Associated protein 4', 'Gene', (244, 287)) ('defensin', 'Gene', (146, 154)) ('resistance to', 'CPA', (217, 230)) 48864 29618619 Previous studies estimate that 25% of the cancer genome is affected by arm-level SCNAs and 10% by focal SCNAs with 2% overlap. ('cancer', 'Phenotype', 'HP:0002664', (42, 48)) ('affected', 'Reg', (59, 67)) ('cancer', 'Disease', 'MESH:D009369', (42, 48)) ('SCNAs', 'Var', (81, 86)) ('cancer', 'Disease', (42, 48)) 48867 29618619 Another study exploring the copy number profiles of 3131 tumor genomes across 26 cancer types identified 158 recurrent focal SCNAs including 76 amplification affecting 1566 genes and 82 deletions affecting 2001 genes. ('amplification affecting', 'Var', (144, 167)) ('focal SCNAs', 'Disease', (119, 130)) ('cancer', 'Disease', 'MESH:D009369', (81, 87)) ('tumor', 'Disease', 'MESH:D009369', (57, 62)) ('cancer', 'Disease', (81, 87)) ('tumor', 'Phenotype', 'HP:0002664', (57, 62)) ('cancer', 'Phenotype', 'HP:0002664', (81, 87)) ('tumor', 'Disease', (57, 62)) ('deletions', 'Var', (186, 195)) 48873 29618619 Survival analyses of different tumor types indicated that patients with homozygous deletion of interferon or defensin genes exhibit much worse overall or disease-free survival. ('worse', 'NegReg', (137, 142)) ('interferon', 'Gene', '3439', (95, 105)) ('tumor', 'Phenotype', 'HP:0002664', (31, 36)) ('disease-free survival', 'CPA', (154, 175)) ('tumor', 'Disease', (31, 36)) ('overall', 'CPA', (143, 150)) ('homozygous deletion', 'Var', (72, 91)) ('interferon', 'Gene', (95, 105)) ('patients', 'Species', '9606', (58, 66)) ('tumor', 'Disease', 'MESH:D009369', (31, 36)) ('defensin genes', 'Gene', (109, 123)) 48874 29618619 RNA-seq gene expression analyses between patients with and without IFN/DEF deletion in 19 cancer types indicate that homozygous deletions of IFN and DEF activate oncogenic and cell cycle pathways but repress immune response pathways. ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('IFN', 'Gene', '3439', (141, 144)) ('repress immune response', 'Phenotype', 'HP:0002721', (200, 223)) ('IFN', 'Gene', (141, 144)) ('patients', 'Species', '9606', (41, 49)) ('immune response pathways', 'Pathway', (208, 232)) ('IFN', 'Gene', '3439', (67, 70)) ('activate', 'PosReg', (153, 161)) ('repress', 'NegReg', (200, 207)) ('cancer', 'Disease', (90, 96)) ('cancer', 'Disease', 'MESH:D009369', (90, 96)) ('DEF', 'Gene', (149, 152)) ('deletions', 'Var', (128, 137)) ('IFN', 'Gene', (67, 70)) 48876 29618619 Since a large body of evidence suggest that interferons and defensins play major roles in tumor immunity by recognizing tumor cells and serve as a bridge to spontaneous adaptive T cell response, our findings suggest a common molecular mechanism mediated by the deletion of interferon and defensin genes, through which tumor cells escape immune detection and destruction. ('defensin genes', 'Gene', (288, 302)) ('interferon', 'Gene', '3439', (273, 283)) ('interferon', 'Gene', '3439', (44, 54)) ('tumor', 'Disease', 'MESH:D009369', (318, 323)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('tumor', 'Disease', (90, 95)) ('tumor', 'Disease', 'MESH:D009369', (120, 125)) ('tumor', 'Disease', 'MESH:D009369', (90, 95)) ('tumor', 'Phenotype', 'HP:0002664', (318, 323)) ('interferon', 'Gene', (44, 54)) ('interferon', 'Gene', (273, 283)) ('tumor', 'Phenotype', 'HP:0002664', (120, 125)) ('deletion', 'Var', (261, 269)) ('tumor', 'Disease', (318, 323)) ('tumor', 'Disease', (120, 125)) 48889 29618619 beta = 0.2), the minimum number of required events (K) is calculated as: where Zalpha/2 = 1.96, Zbeta = 0.84, pi1 and pi2 are the proportions to be allocated into two groups and were determined by the HDI/HDD frequencies in each cancer type. ('cancer', 'Disease', (229, 235)) ('pi1', 'Var', (110, 113)) ('cancer', 'Disease', 'MESH:D009369', (229, 235)) ('Zalpha/2 = 1.96', 'Var', (79, 94)) ('cancer', 'Phenotype', 'HP:0002664', (229, 235)) ('pi2', 'Var', (118, 121)) ('HDD', 'Disease', (205, 208)) ('pi2', 'Species', '1214577', (118, 121)) ('HDD', 'Disease', 'None', (205, 208)) 48921 29618619 Since both interferons and defensins are involved in innate immune response and play important roles in recognizing tumor cells and inducing an anti-tumor immune response, the widespread, homozygous deletion of these genes suggests a common molecular mechanism through which tumor cells escape immune destruction. ('interferon', 'Gene', (11, 21)) ('tumor', 'Disease', 'MESH:D009369', (149, 154)) ('tumor', 'Phenotype', 'HP:0002664', (275, 280)) ('tumor', 'Disease', (275, 280)) ('tumor', 'Phenotype', 'HP:0002664', (149, 154)) ('tumor', 'Disease', 'MESH:D009369', (116, 121)) ('interferon', 'Gene', '3439', (11, 21)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('tumor', 'Disease', (149, 154)) ('deletion', 'Var', (199, 207)) ('tumor', 'Disease', 'MESH:D009369', (275, 280)) ('tumor', 'Disease', (116, 121)) 48946 29618619 We asked the question whether homozygous deletions of interferon genes are passive hitchhiking events due to the nearby CDKN2A deletion, or they play an active role in tumorigenesis and affect the patient survival. ('play', 'Reg', (145, 149)) ('affect', 'Reg', (186, 192)) ('interferon', 'Gene', '3439', (54, 64)) ('tumor', 'Disease', (168, 173)) ('CDKN2A', 'Gene', (120, 126)) ('deletion', 'Var', (127, 135)) ('interferon', 'Gene', (54, 64)) ('CDKN2A', 'Gene', '1029', (120, 126)) ('patient survival', 'CPA', (197, 213)) ('tumor', 'Disease', 'MESH:D009369', (168, 173)) ('patient', 'Species', '9606', (197, 204)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) 48948 29618619 We performed the survival analyses on three patient groups: (I) patients only have CDKN2A deletion (CDKN2A-/IFN+); (II) patients have CDKN2A deletion and additional IFN gene deletions (CDKN2A-/IFN-); and (III) patients have neither CDKN2A nor IFN gene deletions (CDKN2A+/IFN+). ('deletion', 'Var', (90, 98)) ('IFN', 'Gene', '3439', (271, 274)) ('IFN', 'Gene', (243, 246)) ('CDKN2A nor IFN', 'Gene', '1029;3439', (232, 246)) ('CDKN2A', 'Gene', (83, 89)) ('CDKN2A', 'Gene', '1029', (100, 106)) ('CDKN2A', 'Gene', (263, 269)) ('IFN', 'Gene', (193, 196)) ('patient', 'Species', '9606', (64, 71)) ('CDKN2A', 'Gene', (232, 238)) ('patient', 'Species', '9606', (120, 127)) ('CDKN2A-/IFN+);', 'Gene', '1029;3439', (100, 114)) ('IFN', 'Gene', (271, 274)) ('patients', 'Species', '9606', (210, 218)) ('CDKN2A', 'Gene', (185, 191)) ('deletion', 'Var', (141, 149)) ('CDKN2A', 'Gene', '1029', (83, 89)) ('CDKN2A', 'Gene', '1029', (263, 269)) ('CDKN2A', 'Gene', (134, 140)) ('IFN', 'Gene', '3439', (165, 168)) ('CDKN2A', 'Gene', '1029', (232, 238)) ('IFN', 'Gene', '3439', (108, 111)) ('CDKN2A-/IFN-', 'Gene', (185, 197)) ('CDKN2A nor IFN', 'Gene', (232, 246)) ('CDKN2A+/IFN+', 'Gene', '3439', (263, 275)) ('IFN', 'Gene', '3439', (243, 246)) ('CDKN2A', 'Gene', '1029', (185, 191)) ('CDKN2A-/IFN+)', 'Gene', (100, 113)) ('patient', 'Species', '9606', (44, 51)) ('CDKN2A-/IFN-)', 'Gene', '1029;3439', (185, 198)) ('patients', 'Species', '9606', (64, 72)) ('CDKN2A+/IFN+', 'Gene', (263, 275)) ('CDKN2A', 'Gene', '1029', (134, 140)) ('IFN', 'Gene', (165, 168)) ('patients', 'Species', '9606', (120, 128)) ('CDKN2A', 'Gene', (100, 106)) ('patient', 'Species', '9606', (210, 217)) ('IFN', 'Gene', '3439', (193, 196)) ('IFN', 'Gene', (108, 111)) 48955 29618619 It could be also due to other confounding factors such as PTEN and RB1 deletions, which tend to be mutually exclusive with HDIs and HDDs (Supplementary Figure 7). ('deletions', 'Var', (71, 80)) ('PTEN', 'Gene', '5728', (58, 62)) ('RB1', 'Gene', (67, 70)) ('RB1', 'Gene', '5925', (67, 70)) ('HDIs and HDDs', 'Disease', 'None', (123, 136)) ('PTEN', 'Gene', (58, 62)) 48956 29618619 To identify gene expression signatures associated with the deletion of IFN and DEF genes, we performed gene expression analysis on each of the 19 cancer types (or 17 cancer types when COAD and READ are combined as colorectal cancer, LUSC and LUAD are combined as lung cancer) having high frequencies of HDI and HDD. ('cancer', 'Disease', (146, 152)) ('lung cancer', 'Disease', (263, 274)) ('cancer', 'Disease', 'MESH:D009369', (166, 172)) ('cancer', 'Disease', (225, 231)) ('COAD', 'Disease', (184, 188)) ('cancer', 'Phenotype', 'HP:0002664', (146, 152)) ('cancer', 'Phenotype', 'HP:0002664', (225, 231)) ('IFN', 'Gene', '3439', (71, 74)) ('cancer', 'Disease', 'MESH:D009369', (268, 274)) ('HDD', 'Disease', 'None', (311, 314)) ('colorectal cancer', 'Disease', 'MESH:D015179', (214, 231)) ('lung cancer', 'Disease', 'MESH:D008175', (263, 274)) ('colorectal cancer', 'Disease', (214, 231)) ('HDD', 'Disease', (311, 314)) ('cancer', 'Disease', (166, 172)) ('cancer', 'Disease', 'MESH:D009369', (146, 152)) ('cancer', 'Disease', 'MESH:D009369', (225, 231)) ('lung cancer', 'Phenotype', 'HP:0100526', (263, 274)) ('IFN', 'Gene', (71, 74)) ('cancer', 'Phenotype', 'HP:0002664', (166, 172)) ('deletion', 'Var', (59, 67)) ('cancer', 'Disease', (268, 274)) ('COAD', 'Disease', 'MESH:D029424', (184, 188)) ('cancer', 'Phenotype', 'HP:0002664', (268, 274)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (214, 231)) 48970 29618619 In a recent report, copy loss of type I interferon genes are found in 6 out of 12 melanoma patients that resist to anti-CTLA-4 treatment, but in none of the 4 responders (P = 0.23, two-tailed Fisher exact test). ('copy loss', 'Var', (20, 29)) ('patients', 'Species', '9606', (91, 99)) ('interferon', 'Gene', '3439', (40, 50)) ('CTLA-4', 'Gene', '1493', (120, 126)) ('melanoma', 'Phenotype', 'HP:0002861', (82, 90)) ('melanoma', 'Disease', (82, 90)) ('interferon', 'Gene', (40, 50)) ('melanoma', 'Disease', 'MESH:D008545', (82, 90)) ('CTLA-4', 'Gene', (120, 126)) 48975 29618619 As a comparison, deletions of two tumor suppressor genes CDKN2A (P = 0.63) and PTEN (P = 0.55) are not associated with responders or non-responders (Fig. ('tumor', 'Disease', (34, 39)) ('CDKN2A', 'Gene', (57, 63)) ('deletions', 'Var', (17, 26)) ('CDKN2A', 'Gene', '1029', (57, 63)) ('tumor', 'Disease', 'MESH:D009369', (34, 39)) ('PTEN', 'Gene', (79, 83)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('PTEN', 'Gene', '5728', (79, 83)) 48976 29618619 Taken together, our meta-analyses of two independent melanoma cohorts suggest the deletion of interferon and defensin genes is significantly associated anti-CTLA-4 treatment resistance, and might be a potential prognostic biomarker to predict resistance to other immunotherapies. ('CTLA-4', 'Gene', (157, 163)) ('interferon', 'Gene', (94, 104)) ('melanoma', 'Phenotype', 'HP:0002861', (53, 61)) ('melanoma', 'Disease', (53, 61)) ('CTLA-4', 'Gene', '1493', (157, 163)) ('deletion', 'Var', (82, 90)) ('melanoma', 'Disease', 'MESH:D008545', (53, 61)) ('associated', 'Reg', (141, 151)) ('interferon', 'Gene', '3439', (94, 104)) 48978 29618619 In this study, we analyzed the copy number profiles of 10,759 primary cancer tissues and found the homozygous deletions of type I interferon and defensin genes are pervasive in 19 TCGA cancer types, and the alteration frequency is much higher than those of well-known tumor suppressors PTEN and RB1 in the same cancer type (Supplementary Figure 7). ('interferon', 'Gene', '3439', (130, 140)) ('PTEN', 'Gene', '5728', (286, 290)) ('cancer', 'Disease', (311, 317)) ('defensin', 'Gene', (145, 153)) ('cancer', 'Disease', (185, 191)) ('cancer', 'Phenotype', 'HP:0002664', (311, 317)) ('tumor', 'Phenotype', 'HP:0002664', (268, 273)) ('RB1', 'Gene', '5925', (295, 298)) ('cancer', 'Phenotype', 'HP:0002664', (185, 191)) ('cancer', 'Disease', (70, 76)) ('cancer', 'Disease', 'MESH:D009369', (70, 76)) ('cancer', 'Phenotype', 'HP:0002664', (70, 76)) ('cancer', 'Disease', 'MESH:D009369', (311, 317)) ('cancer', 'Disease', 'MESH:D009369', (185, 191)) ('PTEN', 'Gene', (286, 290)) ('tumor', 'Disease', (268, 273)) ('interferon', 'Gene', (130, 140)) ('RB1', 'Gene', (295, 298)) ('deletions', 'Var', (110, 119)) ('tumor', 'Disease', 'MESH:D009369', (268, 273)) 48979 29618619 More importantly, homozygous deletions of interferon and defensin genes associate with worse overall or disease-free survival, and the resistance to anti-CTLA4 treatment in melanoma patients. ('CTLA4', 'Gene', (154, 159)) ('defensin', 'Gene', (57, 65)) ('worse', 'NegReg', (87, 92)) ('melanoma', 'Phenotype', 'HP:0002861', (173, 181)) ('melanoma', 'Disease', (173, 181)) ('interferon', 'Gene', '3439', (42, 52)) ('melanoma', 'Disease', 'MESH:D008545', (173, 181)) ('disease-free survival', 'CPA', (104, 125)) ('resistance', 'CPA', (135, 145)) ('patients', 'Species', '9606', (182, 190)) ('overall', 'CPA', (93, 100)) ('interferon', 'Gene', (42, 52)) ('CTLA4', 'Gene', '1493', (154, 159)) ('homozygous deletions', 'Var', (18, 38)) 48980 29618619 Defects in the type I interferon signaling pathway have been proposed as a potential mechanism of cancer escape (insensitivity) to immunotherapy in mice and prostate cancer cell line. ('prostate cancer', 'Disease', 'MESH:D011471', (157, 172)) ('cancer', 'Phenotype', 'HP:0002664', (98, 104)) ('interferon', 'Gene', '3439', (22, 32)) ('cancer', 'Disease', (166, 172)) ('cancer', 'Disease', 'MESH:D009369', (166, 172)) ('prostate cancer', 'Phenotype', 'HP:0012125', (157, 172)) ('Defects', 'Var', (0, 7)) ('interferon', 'Gene', (22, 32)) ('cancer', 'Disease', 'MESH:D009369', (98, 104)) ('mice', 'Species', '10090', (148, 152)) ('cancer', 'Disease', (98, 104)) ('prostate cancer', 'Disease', (157, 172)) ('cancer', 'Phenotype', 'HP:0002664', (166, 172)) 48985 29618619 By analyzing the genomes of 10,759 cancer patients across 31 cancer types, we found interferon and defensin genes are homozygously deleted with high frequencies in 19 cancer types, and the surviving time of patients with these deletions are significantly reduced. ('reduced', 'NegReg', (255, 262)) ('patients', 'Species', '9606', (207, 215)) ('cancer', 'Disease', 'MESH:D009369', (167, 173)) ('cancer', 'Disease', 'MESH:D009369', (61, 67)) ('interferon', 'Gene', (84, 94)) ('cancer', 'Phenotype', 'HP:0002664', (35, 41)) ('surviving time', 'CPA', (189, 203)) ('cancer', 'Disease', (167, 173)) ('cancer', 'Disease', (61, 67)) ('cancer', 'Phenotype', 'HP:0002664', (167, 173)) ('interferon', 'Gene', '3439', (84, 94)) ('deletions', 'Var', (227, 236)) ('cancer', 'Disease', 'MESH:D009369', (35, 41)) ('cancer', 'Phenotype', 'HP:0002664', (61, 67)) ('patients', 'Species', '9606', (42, 50)) ('defensin genes', 'Gene', (99, 113)) ('cancer', 'Disease', (35, 41)) 48989 28753846 Little is known, however, about how the level of genetic alteration across an entire cancer genome affects tumor grade or stage or survival. ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumor', 'Disease', (107, 112)) ('affects', 'Reg', (99, 106)) ('cancer', 'Disease', 'MESH:D009369', (85, 91)) ('cancer', 'Disease', (85, 91)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) ('genetic alteration', 'Var', (49, 67)) ('stage', 'CPA', (122, 127)) ('cancer', 'Phenotype', 'HP:0002664', (85, 91)) ('survival', 'CPA', (131, 139)) 48999 28753846 Cancers with higher levels of genomic alterations are associated with worse pathologic features and survival. ('Cancers', 'Disease', (0, 7)) ('Cancers', 'Phenotype', 'HP:0002664', (0, 7)) ('Cancer', 'Phenotype', 'HP:0002664', (0, 6)) ('Cancers', 'Disease', 'MESH:D009369', (0, 7)) ('genomic alterations', 'Var', (30, 49)) 49003 28753846 Much less is known about how the level of genetic alteration across an entire cancer genome affects the natural history of an individual malignancy. ('malignancy', 'Disease', (137, 147)) ('affects', 'Reg', (92, 99)) ('cancer', 'Disease', (78, 84)) ('cancer', 'Disease', 'MESH:D009369', (78, 84)) ('genetic alteration', 'Var', (42, 60)) ('cancer', 'Phenotype', 'HP:0002664', (78, 84)) ('malignancy', 'Disease', 'MESH:D009369', (137, 147)) 49005 28753846 While some studies have shown clustering of mutations that are associated with grade and stage, the effect that genomic alterations have on tumor grade and stage on histopathologic analysis has not been fully elucidated. ('associated', 'Reg', (63, 73)) ('tumor', 'Disease', 'MESH:D009369', (140, 145)) ('mutations', 'Var', (44, 53)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('tumor', 'Disease', (140, 145)) 49006 28753846 With the publication of whole cancer genomes as part of The Cancer Genome Atlas (TCGA) and International Cancer Genome consortium, the association of whole-genome alterations such as mutation count (MC) and copy number variation (CNV) can now be correlated with clinicopathologic characteristics, survival outcomes, and therapeutic response. ('Cancer', 'Disease', (105, 111)) ('Cancer Genome Atlas', 'Disease', (60, 79)) ('Cancer', 'Phenotype', 'HP:0002664', (60, 66)) ('Cancer', 'Disease', (60, 66)) ('Cancer Genome Atlas', 'Disease', 'MESH:D009369', (60, 79)) ('Cancer', 'Disease', 'MESH:D009369', (105, 111)) ('Cancer', 'Phenotype', 'HP:0002664', (105, 111)) ('cancer', 'Disease', (30, 36)) ('correlated', 'Reg', (246, 256)) ('cancer', 'Disease', 'MESH:D009369', (30, 36)) ('Cancer', 'Disease', 'MESH:D009369', (60, 66)) ('MC', 'Chemical', '-', (199, 201)) ('copy number variation', 'Var', (207, 228)) ('mutation count', 'Disease', (183, 197)) ('cancer', 'Phenotype', 'HP:0002664', (30, 36)) 49016 28753846 For tumors types with substaging (eg, T2a and T2b in BLCA), substages were combined for analysis. ('tumors', 'Disease', 'MESH:D009369', (4, 10)) ('tumors', 'Disease', (4, 10)) ('T2b', 'Var', (46, 49)) ('tumors', 'Phenotype', 'HP:0002664', (4, 10)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) 49037 28753846 There was no association with Fuhrman grade and MC for a four-tier (p = 0.27) or a two-tier system; however, CNV was associated with higher Fuhrman grade in both four-tier (p = 0.0006) and two-tier (p = 0.0001) systems. ('Fuhrman grade', 'CPA', (140, 153)) ('CNV', 'Var', (109, 112)) ('MC', 'Chemical', '-', (48, 50)) ('higher', 'PosReg', (133, 139)) 49045 28753846 PRAD had the third lowest MC and the lowest CNV. ('lowest', 'NegReg', (37, 43)) ('lowest', 'NegReg', (19, 25)) ('MC', 'Chemical', '-', (26, 28)) ('CNV', 'MPA', (44, 47)) ('PRAD', 'Var', (0, 4)) 49058 28753846 Genetic instability has largely been studied in terms of microsatellite instability and chromosomal instability, and has been linked to adverse pathology and survival in colon cancer. ('colon cancer', 'Phenotype', 'HP:0003003', (170, 182)) ('colon cancer', 'Disease', 'MESH:D015179', (170, 182)) ('colon cancer', 'Disease', (170, 182)) ('cancer', 'Phenotype', 'HP:0002664', (176, 182)) ('microsatellite', 'Var', (57, 71)) ('linked', 'Reg', (126, 132)) ('chromosomal instability', 'Phenotype', 'HP:0040012', (88, 111)) 49059 28753846 One theory, described by Kinzler and Vogelstein, is that mutations in "caretaker" genes that maintain the integrity of the genome is an early event in cancer development that accelerates the accumulation of additional mutations that eventually lead to neoplasia. ('cancer', 'Phenotype', 'HP:0002664', (151, 157)) ('mutations', 'Var', (218, 227)) ('accelerates', 'PosReg', (175, 186)) ('neoplasia', 'Phenotype', 'HP:0002664', (252, 261)) ('neoplasia', 'Disease', (252, 261)) ('mutations', 'Var', (57, 66)) ('lead to', 'Reg', (244, 251)) ('cancer', 'Disease', (151, 157)) ('cancer', 'Disease', 'MESH:D009369', (151, 157)) ('neoplasia', 'Disease', 'MESH:D009369', (252, 261)) 49060 28753846 Our data support the role of genetic instability in the progression to higher grade and/or higher stage cancer for some genitourinary malignancies. ('cancer for some genitourinary malignancies', 'Phenotype', 'HP:0007379', (104, 146)) ('genetic instability', 'Var', (29, 48)) ('higher grade', 'Disease', (71, 83)) ('cancer', 'Phenotype', 'HP:0002664', (104, 110)) ('genitourinary malignancies', 'Disease', 'MESH:D014564', (120, 146)) ('cancer', 'Disease', (104, 110)) ('cancer', 'Disease', 'MESH:D009369', (104, 110)) ('genitourinary malignancies', 'Disease', (120, 146)) 49061 28753846 High MC has previously been associated with greater response to checkpoint inhibitors in melanoma, non-small cell lung cancer, and renal cell carcinoma. ('non-small cell lung cancer', 'Phenotype', 'HP:0030358', (99, 125)) ('renal cell carcinoma', 'Disease', (131, 151)) ('MC', 'Chemical', '-', (5, 7)) ('non-small cell lung cancer', 'Disease', 'MESH:D002289', (99, 125)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (131, 151)) ('carcinoma', 'Phenotype', 'HP:0030731', (142, 151)) ('non-small cell lung cancer', 'Disease', (99, 125)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (131, 151)) ('High MC', 'Var', (0, 7)) ('lung cancer', 'Phenotype', 'HP:0100526', (114, 125)) ('melanoma', 'Phenotype', 'HP:0002861', (89, 97)) ('melanoma', 'Disease', (89, 97)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (103, 125)) ('melanoma', 'Disease', 'MESH:D008545', (89, 97)) ('response', 'MPA', (52, 60)) ('cancer', 'Phenotype', 'HP:0002664', (119, 125)) 49145 26314582 Thompson has suggested that tumours with a PASS >= 6 were biologically more aggressive than tumours with a PASS <4. ('tumours', 'Phenotype', 'HP:0002664', (92, 99)) ('PASS >= 6', 'Var', (43, 52)) ('tumour', 'Phenotype', 'HP:0002664', (28, 34)) ('aggressive', 'CPA', (76, 86)) ('tumours', 'Disease', 'MESH:D009369', (92, 99)) ('tumours', 'Disease', (92, 99)) ('tumours', 'Phenotype', 'HP:0002664', (28, 35)) ('tumour', 'Phenotype', 'HP:0002664', (92, 98)) ('tumours', 'Disease', 'MESH:D009369', (28, 35)) ('tumours', 'Disease', (28, 35)) 49205 25019060 These include multiple endocrine neoplasia type 2 arising from mutations in the rearranged during transfection (RET) proto-oncogene; von Hippel-Lindau (VHL) syndrome caused by mutations of the VHL gene; and von Recklinghausen's disease due to mutations of the neurofibromatosis type 1 (NF1) gene. ('neurofibromatosis type 1', 'Gene', (260, 284)) ('mutations', 'Var', (176, 185)) ('NF1', 'Gene', '4763', (286, 289)) ("von Recklinghausen's disease", 'Disease', 'MESH:C537392', (207, 235)) ('VHL', 'Disease', (193, 196)) ('RET', 'Gene', '5979', (112, 115)) ('mutations', 'Var', (63, 72)) ("von Recklinghausen's disease", 'Disease', (207, 235)) ('NF1', 'Gene', (286, 289)) ('neoplasia', 'Phenotype', 'HP:0002664', (33, 42)) ('endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (23, 49)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (260, 277)) ('VHL', 'Disease', (152, 155)) ('neurofibromatosis type 1', 'Gene', '4763', (260, 284)) ('caused by', 'Reg', (166, 175)) ('endocrine neoplasia type 2', 'Disease', (23, 49)) ('RET', 'Gene', (112, 115)) ('mutations', 'Var', (243, 252)) ('VHL', 'Disease', 'MESH:D006623', (193, 196)) ('von Hippel-Lindau (VHL) syndrome', 'Disease', 'MESH:D006623', (133, 165)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (23, 42)) ('VHL', 'Disease', 'MESH:D006623', (152, 155)) 49206 25019060 In addition, mutations in genes encoding succinate dehydrogenase subunits (SDHD, SDHC, and SDHB) are associated with familial PGL syndromes (PGL1, PGL3, and PGL4), respectively. ('SDHC', 'Gene', (81, 85)) ('mutations', 'Var', (13, 22)) ('SDHC', 'Gene', '6391', (81, 85)) ('SDHB', 'Gene', '6390', (91, 95)) ('SDHD', 'Gene', '6392', (75, 79)) ('PGL3', 'Gene', '6391', (147, 151)) ('PGL', 'Phenotype', 'HP:0002668', (147, 150)) ('PGL', 'Phenotype', 'HP:0002668', (126, 129)) ('PGL3', 'Gene', (147, 151)) ('familial PGL syndromes', 'Disease', 'MESH:D010235', (117, 139)) ('PGL4', 'Gene', '6390', (157, 161)) ('SDHD', 'Gene', (75, 79)) ('PGL', 'Phenotype', 'HP:0002668', (141, 144)) ('PGL4', 'Gene', (157, 161)) ('SDHB', 'Gene', (91, 95)) ('associated', 'Reg', (101, 111)) ('PGL', 'Phenotype', 'HP:0002668', (157, 160)) ('familial PGL syndromes', 'Disease', (117, 139)) 49209 25019060 However, rates of malignancy have been reported as high as 50% in patients with SDHB mutation. ('malignancy', 'Disease', 'MESH:D009369', (18, 28)) ('SDHB', 'Gene', (80, 84)) ('mutation', 'Var', (85, 93)) ('patients', 'Species', '9606', (66, 74)) ('malignancy', 'Disease', (18, 28)) ('SDHB', 'Gene', '6390', (80, 84)) 49220 25019060 However, all of these reports are based on limited numbers of patients and lesions with the exception of a recent study on the role of EBRT and 131I-MIBG in non-head-and-neck PCC or PGL (Table 1). ('EBRT', 'Chemical', '-', (135, 139)) ('PGL', 'Phenotype', 'HP:0002668', (182, 185)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (144, 153)) ('PCC', 'Gene', (175, 178)) ('131I-MIBG', 'Var', (144, 153)) ('patients', 'Species', '9606', (62, 70)) ('PCC', 'Gene', '1421', (175, 178)) 49363 23941827 1B shows that cells that had been treated with the polyclonal anti-CPE IgGs exhibited 2-fold more cyto-toxicity than cells that were treated with non-specific IgGs. ('toxicity', 'Disease', (103, 111)) ('anti-CPE', 'Gene', (62, 70)) ('anti-CPE', 'Var', (62, 70)) ('toxicity', 'Disease', 'MESH:D064420', (103, 111)) 49370 23941827 2 shows that cells treated with recombinant mCPE exhibited significantly less cytotoxicity under metabolic stress than the untreated controls, further supporting our hypothesis that CPE serves as a survival factor. ('less', 'NegReg', (73, 77)) ('mCPE', 'Var', (44, 48)) ('cytotoxicity', 'Disease', 'MESH:D064420', (78, 90)) ('cytotoxicity', 'Disease', (78, 90)) 49375 23941827 Using qRT-PCR to assay for BCL-2 mRNA, it was shown that HCC cells treated with CPE exhibited a ~2.4-fold increase in BCL-2 mRNA expression (t-test p < 0.05) (Fig. ('BCL-2', 'Gene', '596', (27, 32)) ('BCL-2', 'Gene', (27, 32)) ('BCL-2', 'Gene', '596', (118, 123)) ('HCC', 'Phenotype', 'HP:0001402', (57, 60)) ('increase', 'PosReg', (106, 114)) ('CPE', 'Var', (80, 83)) ('BCL-2', 'Gene', (118, 123)) 49386 23941827 To determine if CPE plays a role in Wnt/beta-catenin signaling in HCC cells, we carried out Western blot analysis for active-beta-catenin, phospho-GSK3beta (Ser9), (Tyr216), phos-pho-GSK3alpha (Ser21) and phosphor-AKT and PKC (Fig. ('Tyr216', 'Var', (165, 171)) ('beta-catenin', 'Gene', (125, 137)) ('GSK3alpha', 'Gene', '2931', (183, 192)) ('Ser9', 'Chemical', '-', (157, 161)) ('AKT', 'Gene', '207', (214, 217)) ('AKT', 'Gene', (214, 217)) ('beta-catenin', 'Gene', (40, 52)) ('beta-catenin', 'Gene', '1499', (125, 137)) ('HCC', 'Phenotype', 'HP:0001402', (66, 69)) ('Ser21', 'Chemical', '-', (194, 199)) ('beta-catenin', 'Gene', '1499', (40, 52)) ('GSK3beta', 'Gene', (147, 155)) ('Tyr216', 'Chemical', '-', (165, 171)) ('GSK3beta', 'Gene', '2932', (147, 155)) ('GSK3alpha', 'Gene', (183, 192)) 49387 23941827 There was a 40% increase in active-beta-catenin (t-test p < 0.03) and 17% increasing in phospho-GSK3beta (Ser9) (t-test p < 0.02), however no changes were found in the expression of phospho-GSK3beta (Tyr216), phospho -GSK3alpha (Ser21), phospho-AKT or phospho-PKC. ('beta-catenin', 'Gene', (35, 47)) ('GSK3beta', 'Gene', '2932', (96, 104)) ('Tyr216', 'Chemical', '-', (200, 206)) ('AKT', 'Gene', '207', (245, 248)) ('GSK3beta', 'Gene', (190, 198)) ('Tyr216', 'Var', (200, 206)) ('GSK3alpha', 'Gene', (218, 227)) ('beta-catenin', 'Gene', '1499', (35, 47)) ('increase', 'PosReg', (16, 24)) ('GSK3alpha', 'Gene', '2931', (218, 227)) ('AKT', 'Gene', (245, 248)) ('GSK3beta', 'Gene', '2932', (190, 198)) ('Ser9', 'Chemical', '-', (106, 110)) ('Ser21', 'Chemical', '-', (229, 234)) ('GSK3beta', 'Gene', (96, 104)) 49398 23941827 7 C shows that ~22% fewer HT1080 cells migrated through the BME barrier when treated with CPE compared to that of untreated cells (control). ('HT1080', 'Gene', (26, 32)) ('HT1080', 'Gene', '8872', (26, 32)) ('CPE', 'Var', (90, 93)) ('fewer', 'NegReg', (20, 25)) ('rat', 'Species', '10116', (42, 45)) 49450 23941827 On the other hand, our studies on CPE- N in PHEOs showed that high copy numbers of CPE- N mRNA indicated a metastatic tumor, or future recurrence or metastasis with poor prognosis. ('PHEOs', 'Chemical', '-', (44, 49)) ('metastasis', 'CPA', (149, 159)) ('tumor', 'Disease', 'MESH:D009369', (118, 123)) ('CPE- N', 'Gene', (83, 89)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('indicated', 'Reg', (95, 104)) ('tumor', 'Disease', (118, 123)) ('high copy numbers', 'Var', (62, 79)) 49492 21565667 Distinction of the two major subtypes is important because removal of an APA may lead to cure of hypertension with attendant reduction in health risks and improvement in quality of life, whereas patients with IHA require lifelong treatment with antihypertensive drugs; However, targeted therapy using a mineralocorticoid receptor blocker may lead to improved blood pressure control with the need for fewer medications in some patients. ('improvement', 'PosReg', (155, 166)) ('blood pressure control', 'MPA', (359, 381)) ('hypertension', 'Disease', (97, 109)) ('reduction', 'NegReg', (125, 134)) ('removal', 'Var', (59, 66)) ('hypertension', 'Phenotype', 'HP:0000822', (97, 109)) ('mineralocorticoid receptor', 'Gene', '4306', (303, 329)) ('hypertension', 'Disease', 'MESH:D006973', (97, 109)) ('hypertensive', 'Disease', 'MESH:D006973', (249, 261)) ('patients', 'Species', '9606', (195, 203)) ('patients', 'Species', '9606', (426, 434)) ('PA', 'Phenotype', 'HP:0011736', (74, 76)) ('hypertensive', 'Disease', (249, 261)) ('mineralocorticoid receptor', 'Gene', (303, 329)) ('mineralocorticoid receptor blocker', 'Phenotype', 'HP:0004319', (303, 337)) ('improved', 'PosReg', (350, 358)) 49536 21565667 Overall, the sensitivity of an increased ARR to identify combinations of PRA and aldosterone compatible with PA was 66% (80% in blacks versus 56% in whites). ('combinations', 'Var', (57, 69)) ('aldosterone', 'Chemical', 'MESH:D000450', (81, 92)) ('PA', 'Phenotype', 'HP:0011736', (109, 111)) ('PRA', 'Gene', (73, 76)) ('aldosterone', 'MPA', (81, 92)) ('PRA', 'Gene', '6277', (73, 76)) 49564 21565667 Among the catecholamine metabolites, vanillymandelic acid has been shown to have poor diagnostic sensitivity and, thus, measurement of the fractionated catecholamine metabolites-metanephrine and normetanephrine in the plasma or urine- are the preferred screening tests for pheochromocytoma. ('metanephrine', 'Chemical', 'MESH:D008676', (178, 190)) ('catecholamine', 'Chemical', 'MESH:D002395', (10, 23)) ('pheochromocytoma', 'Disease', (273, 289)) ('vanillymandelic acid', 'Chemical', '-', (37, 57)) ('catecholamine', 'Chemical', 'MESH:D002395', (152, 165)) ('vanillymandelic acid', 'Var', (37, 57)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (273, 289)) ('normetanephrine', 'Chemical', 'MESH:D009647', (195, 210)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (273, 289)) ('metanephrine', 'Chemical', 'MESH:D008676', (198, 210)) 49578 21565667 These include concomitant use of drugs, especially phenoxybenzamine, tricyclic antidepressants, buspirone, and drugs containing catecholamines such as decongestants and weight loss aids. ('catecholamines', 'Chemical', 'MESH:D002395', (128, 142)) ('weight loss aids', 'Disease', 'MESH:D015431', (169, 185)) ('weight loss aids', 'Disease', (169, 185)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (51, 67)) ('buspirone', 'Chemical', 'MESH:D002065', (96, 105)) ('phenoxybenzamine', 'Var', (51, 67)) ('weight loss', 'Phenotype', 'HP:0001824', (169, 180)) 49591 21565667 In general serial testing will increase specificity at the expense of lower sensitivity and this must be kept in mind when employing such strategies for identification of a potentially fatal disorder. ('fatal disorder', 'Disease', (185, 199)) ('serial testing', 'Var', (11, 25)) ('fatal disorder', 'Disease', 'MESH:D034062', (185, 199)) ('specificity', 'MPA', (40, 51)) ('increase', 'PosReg', (31, 39)) 49594 21384277 A case of carotid body paraganglioma and haemangioblastoma of the spinal cord in a patient with the N131K missense mutation in the VHL gene The article describes paraganglioma case in woman with von Hippel-Lindau disease. ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (195, 220)) ('carotid body paraganglioma', 'Disease', 'MESH:D002345', (10, 36)) ('carotid body paraganglioma', 'Disease', (10, 36)) ('haemangioblastoma of the spinal cord', 'Disease', 'MESH:D013118', (41, 77)) ('VHL', 'Disease', (131, 134)) ('paraganglioma', 'Disease', (162, 175)) ('von Hippel-Lindau disease', 'Disease', (195, 220)) ('paraganglioma', 'Phenotype', 'HP:0002668', (23, 36)) ('paraganglioma', 'Disease', 'MESH:D010235', (162, 175)) ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (10, 36)) ('paraganglioma', 'Phenotype', 'HP:0002668', (162, 175)) ('VHL', 'Disease', 'MESH:D006623', (131, 134)) ('woman', 'Species', '9606', (184, 189)) ('paraganglioma', 'Disease', (23, 36)) ('haemangioblastoma of the spinal cord', 'Disease', (41, 77)) ('haemangioblastoma', 'Phenotype', 'HP:0010797', (41, 58)) ('N131K missense mutation', 'Var', (100, 123)) ('paraganglioma', 'Disease', 'MESH:D010235', (23, 36)) ('patient', 'Species', '9606', (83, 90)) ('N131K', 'Mutation', 'rs1064794272', (100, 105)) 49595 21384277 She was found to be a carrier of a rare germline mutation in the VHL gene (393C>A; N131K). ('VHL', 'Disease', (65, 68)) ('393C>A; N131K', 'Var', (75, 88)) ('VHL', 'Disease', 'MESH:D006623', (65, 68)) ('393C>A', 'Mutation', 'rs1064794272', (75, 81)) ('N131K', 'Mutation', 'rs1064794272', (83, 88)) 49604 21384277 The condition is caused by carrying germline mutations of the VHL gene. ('VHL', 'Disease', (62, 65)) ('germline mutations', 'Var', (36, 54)) ('VHL', 'Disease', 'MESH:D006623', (62, 65)) ('caused by', 'Reg', (17, 26)) 49605 21384277 The diagnosis of VHL disease is established based on genealogical/clinical criteria and an analysis of carrying mutations of the VHL gene. ('VHL', 'Disease', (129, 132)) ('VHL', 'Disease', (17, 20)) ('VHL', 'Disease', 'MESH:D006623', (17, 20)) ('VHL disease', 'Disease', 'MESH:D006623', (17, 28)) ('mutations', 'Var', (112, 121)) ('VHL disease', 'Disease', (17, 28)) ('VHL', 'Disease', 'MESH:D006623', (129, 132)) 49655 21384277 Herein we describe a rare case of carotid body paraganglioma in a woman with von Hippel-Lindau disease, caused by the N131K mutation in the VHL gene. ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (34, 60)) ('carotid body paraganglioma', 'Disease', 'MESH:D002345', (34, 60)) ('carotid body paraganglioma', 'Disease', (34, 60)) ('N131K', 'Var', (118, 123)) ('paraganglioma', 'Phenotype', 'HP:0002668', (47, 60)) ('VHL', 'Disease', (140, 143)) ('N131K', 'Mutation', 'rs1064794272', (118, 123)) ('VHL', 'Disease', 'MESH:D006623', (140, 143)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (77, 102)) ('woman', 'Species', '9606', (66, 71)) ('von Hippel-Lindau disease', 'Disease', (77, 102)) ('caused by', 'Reg', (104, 113)) 49656 21384277 The N131K is a rare missense mutation of the VHL gene. ('VHL', 'Disease', 'MESH:D006623', (45, 48)) ('N131K', 'Mutation', 'rs1064794272', (4, 9)) ('N131K', 'Var', (4, 9)) ('VHL', 'Disease', (45, 48)) 49658 21384277 VHL type 2 disease is typically caused by missense mutations. ('caused', 'Reg', (32, 38)) ('missense mutations', 'Var', (42, 60)) ('VHL type 2 disease', 'Disease', (0, 18)) ('VHL type 2 disease', 'Disease', 'MESH:D006623', (0, 18)) 49659 21384277 However, only specific missense mutations are associated with pheochromocytoma:those mutations which map to protein binding sites of pVHL and which are predicted to cause local protein defects. ('pheochromocytoma', 'Disease', 'MESH:D010673', (62, 78)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('protein defects', 'Disease', 'MESH:D011488', (177, 192)) ('cause', 'Reg', (165, 170)) ('protein defects', 'Disease', (177, 192)) ('missense', 'Var', (23, 31)) ('mutations', 'Var', (85, 94)) ('associated', 'Reg', (46, 56)) ('pVHL', 'Gene', '7428', (133, 137)) ('pVHL', 'Gene', (133, 137)) ('pheochromocytoma', 'Disease', (62, 78)) 49661 21384277 VHL kindreds with pheochromocytoma-associated missense mutations require careful surveillance for pheochromocytoma as this is frequently the first manifestation. ('missense mutations', 'Var', (46, 64)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (18, 34)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (18, 34)) ('VHL', 'Disease', 'MESH:D006623', (0, 3)) ('VHL', 'Disease', (0, 3)) ('pheochromocytoma', 'Disease', (98, 114)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (98, 114)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (98, 114)) ('pheochromocytoma', 'Disease', (18, 34)) 49662 21384277 Therefore, the correlation between the 393C>A (N131K) missense mutation and VHL type 2 may be useful in genetic counselling. ('N131K', 'Mutation', 'rs1064794272', (47, 52)) ('393C>A', 'Mutation', 'rs1064794272', (39, 45)) ('VHL', 'Disease', (76, 79)) ('VHL', 'Disease', 'MESH:D006623', (76, 79)) ('393C>A (N131K', 'Var', (39, 52)) 49694 21384277 Therefore, a correlation between the 393C>A (N131K) missense mutation and VHL type 2 may be useful in genetic counselling. ('N131K', 'Mutation', 'rs1064794272', (45, 50)) ('393C>A', 'Mutation', 'rs1064794272', (37, 43)) ('393C>A (N131K', 'Var', (37, 50)) ('VHL', 'Disease', (74, 77)) ('VHL', 'Disease', 'MESH:D006623', (74, 77)) 49697 20833333 Four distinct syndromes - PGL1-4 - are related to mutations in the succinate dehydrogenase gene - mitochondrial complex involved in electron transfer and Krebs cycle. ('Krebs', 'Chemical', '-', (154, 159)) ('mutations', 'Var', (50, 59)) ('related', 'Reg', (39, 46)) ('succinate', 'Chemical', 'MESH:D019802', (67, 76)) ('hydrogen', 'Chemical', 'MESH:D006859', (79, 87)) 49699 20833333 We also describe recent discoveries in HIF-related pathway of tumorigenesis and mutations in new SDH-related genes that have improved our understanding of this disease. ('HIF-related', 'Pathway', (39, 50)) ('tumor', 'Phenotype', 'HP:0002664', (62, 67)) ('mutations', 'Var', (80, 89)) ('SDH', 'Gene', '6390', (97, 100)) ('tumor', 'Disease', (62, 67)) ('SDH', 'Gene', (97, 100)) ('tumor', 'Disease', 'MESH:D009369', (62, 67)) 49707 20833333 The two most recent additions to this group include mutations in SDH5 and propyl hydroxylase domain 2 (PDH2) genes that, although extremely rare, are also associated with PHEOs/PGLs. ('mutations', 'Var', (52, 61)) ('PDH', 'Gene', '54704', (103, 106)) ('associated', 'Reg', (155, 165)) ('PHEOs/PGLs', 'Disease', (171, 181)) ('SDH5', 'Gene', (65, 69)) ('PDH', 'Gene', (103, 106)) 49709 20833333 Despite the fact that different SDH mutations occur in single multi-unit enzyme, they express significant phenotype heterogeneity. ('SDH', 'Gene', (32, 35)) ('SDH', 'Gene', '6390', (32, 35)) ('mutations', 'Var', (36, 45)) 49714 20833333 Further testing revealed PGL1 to be related to mutation in the SDHD gene on 11q23 (Table 1), PGL2 to SDH5 on 11q13.1, PGL3 to mutation in SDHC on 1q21 and PGL4 to SDHB on 1p35-p36.1. ('PGL3', 'Gene', '6391', (118, 122)) ('related', 'Reg', (36, 43)) ('SDHB', 'Gene', '6390', (163, 167)) ('SDHB', 'Gene', (163, 167)) ('PGL3', 'Gene', (118, 122)) ('PGL4', 'Gene', '6390', (155, 159)) ('mutation', 'Var', (47, 55)) ('SDHC', 'Gene', (138, 142)) ('mutation', 'Var', (126, 134)) ('PGL2', 'Gene', '54949', (93, 97)) ('SDHC', 'Gene', '6391', (138, 142)) ('SDHD', 'Gene', '6392', (63, 67)) ('PGL2', 'Gene', (93, 97)) ('PGL4', 'Gene', (155, 159)) ('SDHD', 'Gene', (63, 67)) 49721 20833333 To not underestimate the need for apparently secondary importance of the SDH-related part of the chain, one should remember that inactivating mutation in SDHA causes the same necrotizing encephalopathy (Leigh syndrome) as mutation in any other complex of the ETC. ('SDHA', 'Gene', (154, 158)) ('SDH', 'Gene', (154, 157)) ('SDH', 'Gene', '6390', (73, 76)) ('encephalopathy', 'Disease', 'MESH:D001927', (187, 201)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (203, 217)) ('necrotizing encephalopathy', 'Phenotype', 'HP:0006976', (175, 201)) ('encephalopathy', 'Phenotype', 'HP:0001298', (187, 201)) ('encephalopathy', 'Disease', (187, 201)) ('causes', 'Reg', (159, 165)) ('SDH', 'Gene', '6390', (154, 157)) ('SDHA', 'Gene', '6389', (154, 158)) ('SDH', 'Gene', (73, 76)) ('inactivating mutation', 'Var', (129, 150)) ('Leigh syndrome', 'Disease', (203, 217)) 49723 20833333 It is the only non transmembrane complex, the only non-proton pump, and while the main goal of electron transfer is to generate enough H+-driven gradient for ATP synthesis, the hydroxylation of succinate to fumarate actually generates intra-matrix H+ that can actually diminish that gradient. ('gradient', 'MPA', (283, 291)) ('H+-driven gradient', 'MPA', (135, 153)) ('ATP', 'Chemical', 'MESH:D000255', (158, 161)) ('diminish', 'NegReg', (269, 277)) ('succinate', 'Chemical', 'MESH:D019802', (194, 203)) ('fumarate', 'Chemical', 'MESH:D005650', (207, 215)) ('hydroxylation', 'Var', (177, 190)) 49731 20833333 In contrast, mutation in the catalytic subunit SDHA causes necrotizing encephalopathy, which is caused by other mutations in genes involved in energy metabolism, such as the rest of the members of electron transfer chain and components of pyruvate dehydrogenase complex. ('SDHA', 'Gene', (47, 51)) ('caused', 'Reg', (96, 102)) ('hydrogen', 'Chemical', 'MESH:D006859', (250, 258)) ('mutation', 'Var', (13, 21)) ('encephalopathy', 'Disease', 'MESH:D001927', (71, 85)) ('SDHA', 'Gene', '6389', (47, 51)) ('necrotizing encephalopathy', 'Phenotype', 'HP:0006976', (59, 85)) ('encephalopathy', 'Phenotype', 'HP:0001298', (71, 85)) ('causes', 'Reg', (52, 58)) ('encephalopathy', 'Disease', (71, 85)) 49732 20833333 Genes for SDHC, B, and D are nuclear and the mode of inheritance is autosomal dominant with maternal imprinting for SDHD and inactivating germline mutations result in loss of function of SDH. ('SDH', 'Gene', '6390', (10, 13)) ('loss of function', 'NegReg', (167, 183)) ('SDHC', 'Gene', (10, 14)) ('SDH', 'Gene', (116, 119)) ('inactivating', 'Var', (125, 137)) ('SDH', 'Gene', '6390', (187, 190)) ('SDH', 'Gene', (10, 13)) ('SDHC', 'Gene', '6391', (10, 14)) ('SDHD', 'Gene', (116, 120)) ('SDHD', 'Gene', '6392', (116, 120)) ('SDH', 'Gene', (187, 190)) ('SDH', 'Gene', '6390', (116, 119)) 49735 20833333 Apart from classic VHL and SDH-mutation associated PHEO/PGL, tumorigenesis pathway includes recently discovered mutations along this pathway like PDH2 and possibly KIF1B. ('KIF1B', 'Gene', (164, 169)) ('VHL', 'Disease', 'MESH:D006623', (19, 22)) ('PDH', 'Gene', '54704', (146, 149)) ('KIF1B', 'Gene', '23095', (164, 169)) ('SDH', 'Gene', '6390', (27, 30)) ('SDH', 'Gene', (27, 30)) ('tumor', 'Disease', 'MESH:D009369', (61, 66)) ('mutations', 'Var', (112, 121)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('PDH', 'Gene', (146, 149)) ('tumor', 'Disease', (61, 66)) ('VHL', 'Disease', (19, 22)) 49736 20833333 Thus, for SDH-related mutations, decrease in fumarate production and accumulation of succinate would be expected with a significant decrease in the amount of SDH subunits. ('SDH', 'Gene', '6390', (10, 13)) ('decrease', 'NegReg', (33, 41)) ('SDH', 'Gene', (158, 161)) ('SDH', 'Gene', (10, 13)) ('amount of', 'MPA', (148, 157)) ('accumulation', 'PosReg', (69, 81)) ('fumarate production', 'MPA', (45, 64)) ('fumarate', 'Chemical', 'MESH:D005650', (45, 53)) ('mutations', 'Var', (22, 31)) ('SDH', 'Gene', '6390', (158, 161)) ('succinate', 'Chemical', 'MESH:D019802', (85, 94)) ('decrease', 'NegReg', (132, 140)) 49741 20833333 Another interesting observations on genotype-phenotype correlation show significant differences in clinical presentation among mutations in different SDH subunits. ('mutations', 'Var', (127, 136)) ('SDH', 'Gene', (150, 153)) ('differences', 'Reg', (84, 95)) ('SDH', 'Gene', '6390', (150, 153)) 49742 20833333 While all SDH-related mutations result in near abolished SDH complex activity, SDHB related tumors have a significant malignant potential and are commonly found in the abdomen compared to SDHD and SDHC tumors that are almost always benign and commonly found in the head and neck areas. ('SDH', 'Gene', '6390', (10, 13)) ('SDHC tumors', 'Disease', 'MESH:D009369', (197, 208)) ('tumors', 'Disease', 'MESH:D009369', (202, 208)) ('SDH', 'Gene', '6390', (57, 60)) ('tumors', 'Phenotype', 'HP:0002664', (92, 98)) ('SDHB', 'Gene', (79, 83)) ('SDH', 'Gene', '6390', (79, 82)) ('SDHD', 'Gene', '6392', (188, 192)) ('SDH', 'Gene', (10, 13)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('SDH', 'Gene', '6390', (197, 200)) ('SDH', 'Gene', '6390', (188, 191)) ('tumors', 'Disease', (92, 98)) ('abolished', 'NegReg', (47, 56)) ('activity', 'MPA', (69, 77)) ('tumors', 'Phenotype', 'HP:0002664', (202, 208)) ('SDH', 'Gene', (57, 60)) ('SDHD', 'Gene', (188, 192)) ('SDH', 'Gene', (79, 82)) ('mutations', 'Var', (22, 31)) ('SDH', 'Gene', (197, 200)) ('SDHC tumors', 'Disease', (197, 208)) ('tumors', 'Disease', 'MESH:D009369', (92, 98)) ('tumor', 'Phenotype', 'HP:0002664', (202, 207)) ('SDH', 'Gene', (188, 191)) ('tumors', 'Disease', (202, 208)) ('malignant potential', 'CPA', (118, 137)) ('SDHB', 'Gene', '6390', (79, 83)) 49745 20833333 On the other hand, Dahia showed in an animal model of heterozygous SDHD mutation that there is an early upregulation of glycolytic enzymes that differ from classic late Warburg effect. ('upregulation', 'PosReg', (104, 116)) ('glycolytic', 'Enzyme', (120, 130)) ('SDHD', 'Gene', (67, 71)) ('SDHD', 'Gene', '6392', (67, 71)) ('Dahia', 'Chemical', '-', (19, 24)) ('mutation', 'Var', (72, 80)) 49748 20833333 supported previous findings of the high frequency of SDHD and SDHC mutations in head and neck paragangliomas, as well as higher frequency of abdominal and pelvic disease and overall malignancy in SDHB mutations. ('malignancy', 'Disease', 'MESH:D009369', (182, 192)) ('mutations', 'Var', (201, 210)) ('malignancy', 'Disease', (182, 192)) ('neck paragangliomas', 'Disease', (89, 108)) ('SDHC', 'Gene', (62, 66)) ('SDHD', 'Gene', (53, 57)) ('SDHD', 'Gene', '6392', (53, 57)) ('mutations', 'Var', (67, 76)) ('SDHB', 'Gene', '6390', (196, 200)) ('SDHC', 'Gene', '6391', (62, 66)) ('paragangliomas', 'Phenotype', 'HP:0002668', (94, 108)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (89, 108)) ('paraganglioma', 'Phenotype', 'HP:0002668', (94, 107)) ('abdominal and pelvic disease', 'Disease', 'MESH:D017699', (141, 169)) ('SDHB', 'Gene', (196, 200)) ('higher', 'PosReg', (121, 127)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (89, 108)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (80, 108)) 49749 20833333 Both mediastinal PGLs and PGLs of the large para-aortic paraganglion, described by Emil Zuckerkandl, usually associate with SDHB or SDHD mutations. ('SDHB', 'Gene', (124, 128)) ('SDHD', 'Gene', (132, 136)) ('mutations', 'Var', (137, 146)) ('associate', 'Reg', (109, 118)) ('SDHD', 'Gene', '6392', (132, 136)) ('SDHB', 'Gene', '6390', (124, 128)) 49750 20833333 Pediatric PHEOs/PGLs seem to be familial to greater degree than tumors in adults, mostly related to SDHB mutation and manifest with more aggressive course - higher rate of malignancy and more metastatic disease on presentation (Pacak et al. ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) ('tumors', 'Disease', (64, 70)) ('mutation', 'Var', (105, 113)) ('malignancy', 'Disease', 'MESH:D009369', (172, 182)) ('tumors', 'Disease', 'MESH:D009369', (64, 70)) ('tumors', 'Phenotype', 'HP:0002664', (64, 70)) ('malignancy', 'Disease', (172, 182)) ('related', 'Reg', (89, 96)) ('metastatic disease', 'CPA', (192, 210)) ('SDHB', 'Gene', '6390', (100, 104)) ('SDHB', 'Gene', (100, 104)) ('PHEOs/PGLs', 'Disease', (10, 20)) 49751 20833333 SDHB mutations predispose to mainly extra-adrenal PHEOs with a high malignant potential and, less frequently, to benign parasympathetic head and neck PGLs. ('extra-adrenal PHEOs', 'Disease', (36, 55)) ('mutations', 'Var', (5, 14)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) ('predispose to', 'Reg', (15, 28)) 49755 20833333 By age 40, 45% of SDHB mutation carriers show clinical signs of the disease. ('SDHB', 'Gene', (18, 22)) ('SDHB', 'Gene', '6390', (18, 22)) ('mutation', 'Var', (23, 31)) 49757 20833333 If malignant sympathetic PGL arises from an extra-adrenal primary tumor, the prevalence of SDHB mutation can reach close to 50%. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('malignant sympathetic PGL', 'Disease', (3, 28)) ('tumor', 'Disease', (66, 71)) ('SDHB', 'Gene', '6390', (91, 95)) ('mutation', 'Var', (96, 104)) ('SDHB', 'Gene', (91, 95)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) 49760 20833333 Younger age or metastatic disease at presentation, larger tumor size, and, to lesser extend, dopaminergic secretory profile and misssense mutation seem to associate with more aggressive tumor behavior, but there is no clear phenotype/genotype correlation. ('metastatic', 'Disease', (15, 25)) ('tumor', 'Disease', 'MESH:D009369', (186, 191)) ('tumor', 'Disease', (58, 63)) ('tumor', 'Phenotype', 'HP:0002664', (58, 63)) ('tumor', 'Phenotype', 'HP:0002664', (186, 191)) ('associate with', 'Reg', (155, 169)) ('dopamine', 'Chemical', 'MESH:D004298', (93, 101)) ('aggressive tumor behavior', 'Disease', 'MESH:D001523', (175, 200)) ('tumor', 'Disease', (186, 191)) ('dopaminergic secretory profile', 'MPA', (93, 123)) ('tumor', 'Disease', 'MESH:D009369', (58, 63)) ('aggressive tumor behavior', 'Disease', (175, 200)) ('misssense mutation', 'Var', (128, 146)) ('more', 'PosReg', (170, 174)) 49762 20833333 SDHD mutations are typically associated with multifocal parasympathetic head and neck PGLs and usually benign extra-adrenal and adrenal PHEOs. ('SDHD', 'Gene', (0, 4)) ('SDHD', 'Gene', '6392', (0, 4)) ('mutations', 'Var', (5, 14)) ('associated', 'Reg', (29, 39)) 49763 20833333 A German-Polish cohort of 34 patients with SDHD mutation showed that 53% of carriers had adrenal PHEO, while 79% had head and neck PGLs. ('patients', 'Species', '9606', (29, 37)) ('adrenal PHEO', 'Disease', (89, 101)) ('SDHD', 'Gene', '6392', (43, 47)) ('SDHD', 'Gene', (43, 47)) ('mutation', 'Var', (48, 56)) 49764 20833333 Metastatic pheochromocytoma is rare in SDHD mutation carriers for both sympathetic and parasympathetic disease, but can occur. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (11, 27)) ('mutation', 'Var', (44, 52)) ('Metastatic pheochromocytoma', 'Disease', (0, 27)) ('SDHD', 'Gene', (39, 43)) ('parasympathetic disease', 'Disease', (87, 110)) ('SDHD', 'Gene', '6392', (39, 43)) ('Metastatic pheochromocytoma', 'Disease', 'MESH:D010673', (0, 27)) ('parasympathetic disease', 'Disease', 'MESH:D001342', (87, 110)) 49765 20833333 For example, the D92Y cofounder mutation was described to be associated with malignant course of the disease, but additional mutations with malignant potential have been described. ('D92Y', 'Mutation', 'rs80338845', (17, 21)) ('associated', 'Reg', (61, 71)) ('malignant', 'CPA', (77, 86)) ('D92Y', 'Var', (17, 21)) 49767 20833333 SDHC mutations are rare, and are almost exclusively associated with parasympathetic head and neck PGL, although rare cases of SDHC-associated extra-adrenal PHEO have been reported. ('SDHC', 'Gene', (126, 130)) ('SDHC', 'Gene', (0, 4)) ('SDHC', 'Gene', '6391', (126, 130)) ('associated', 'Reg', (52, 62)) ('mutations', 'Var', (5, 14)) ('SDHC', 'Gene', '6391', (0, 4)) 49771 20833333 It was clearly familial and initially mapped to chromosome 11, but as other PGL syndromes were successfully found to be related to specific gene mutations, one thing seem to hold in relation to PGL2: it was not related to mutation in SDHA subunit - the only subunit left without mutation causing PHEO/PGL. ('PGL syndrome', 'Disease', (76, 88)) ('PGL2', 'Gene', (194, 198)) ('mutation', 'Var', (222, 230)) ('SDHA', 'Gene', (234, 238)) ('PGL syndrome', 'Disease', 'MESH:D010235', (76, 88)) ('PGL2', 'Gene', '54949', (194, 198)) ('SDHA', 'Gene', '6389', (234, 238)) 49773 20833333 Low and behold, when they decided to test the PGL2 kindred, mutation in SHD5 at G78R was found in 45 members of this lineage with disease haplotype and none in controls or lineage members without disease and without disease-specific haplotype. ('G78R', 'Var', (80, 84)) ('G78R', 'Mutation', 'rs113560320', (80, 84)) ('found', 'Reg', (89, 94)) ('PGL2', 'Gene', '54949', (46, 50)) ('PGL2', 'Gene', (46, 50)) ('SHD5', 'Gene', (72, 76)) 49774 20833333 Furthemore, mutation in SDH5 gene results in about 95% decrease in flavination (attachment of FAD) of the SDHA and significant decrease in the overall SDH activity. ('SDH', 'Gene', '6390', (151, 154)) ('SDHA', 'Gene', (106, 110)) ('SDH', 'Gene', '6390', (24, 27)) ('SDH', 'Gene', (106, 109)) ('SDH', 'Gene', (151, 154)) ('decrease', 'NegReg', (127, 135)) ('decrease', 'NegReg', (55, 63)) ('SDH', 'Gene', (24, 27)) ('SDHA', 'Gene', '6389', (106, 110)) ('mutation', 'Var', (12, 20)) ('SDH', 'Gene', '6390', (106, 109)) 49776 20833333 Despite excitement following this discovery and the fact that it advanced further our understanding of the SDH complex, overall SDH5 mutation are very rare, with only one additional family described thus far. ('mutation', 'Var', (133, 141)) ('SDH', 'Gene', '6390', (128, 131)) ('SDH', 'Gene', '6390', (107, 110)) ('SDH', 'Gene', (128, 131)) ('SDH', 'Gene', (107, 110)) 44669 20833333 Treatment with therapeutic doses of 131I-MIBG or combination chemotherapy (cyclophosphamide, vincristine, and darcabazine) may induce (partial) responses. ('induce', 'Reg', (127, 133)) ('131I-MIBG', 'Var', (36, 45)) ('darcabazine', 'Chemical', '-', (110, 121)) ('vincristine', 'Chemical', 'MESH:D014750', (93, 104)) ('cyclophosphamide', 'Chemical', 'MESH:D003520', (75, 91)) ('131I-MIBG', 'Chemical', '-', (36, 45)) 44671 20833333 Symptomatic treatment by decreasing catecholamine burden can be obtained with alpha-adrenergic blockers and alpha-methyl-paratyrosine. ('decreasing catecholamine burden', 'Phenotype', 'HP:0045012', (25, 56)) ('catecholamine burden', 'MPA', (36, 56)) ('alpha-methyl-paratyrosine', 'Chemical', 'MESH:D019805', (108, 133)) ('alpha-methyl-paratyrosine', 'Var', (108, 133)) ('decreasing', 'NegReg', (25, 35)) ('catecholamine', 'Chemical', 'MESH:D002395', (36, 49)) 49798 20833333 SDH-related PHEO/PGL are rare, but potentially lethal conditions SDH is a mitochondrial complex participating in both electron transfer and the Krebs cycle There are 4 PGL syndromes, related to mutations of different succinate dehydrogenase subunits Biochemically these tumors can be secretory or silent Some of these tumors - especially SDHB-related tumors - carry significant malignant potential ('SDH', 'Gene', '6390', (65, 68)) ('hydrogen', 'Chemical', 'MESH:D006859', (229, 237)) ('tumors', 'Disease', 'MESH:D009369', (351, 357)) ('tumor', 'Phenotype', 'HP:0002664', (270, 275)) ('tumors', 'Disease', 'MESH:D009369', (318, 324)) ('tumors', 'Phenotype', 'HP:0002664', (270, 276)) ('SDHB', 'Gene', '6390', (338, 342)) ('SDH', 'Gene', '6390', (0, 3)) ('tumors', 'Disease', (270, 276)) ('SDH', 'Gene', (65, 68)) ('SDHB', 'Gene', (338, 342)) ('tumors', 'Disease', 'MESH:D009369', (270, 276)) ('PGL syndrome', 'Disease', 'MESH:D010235', (168, 180)) ('SDH', 'Gene', '6390', (338, 341)) ('tumors', 'Phenotype', 'HP:0002664', (351, 357)) ('SDH', 'Gene', (0, 3)) ('Krebs', 'Chemical', '-', (144, 149)) ('tumors', 'Phenotype', 'HP:0002664', (318, 324)) ('tumor', 'Phenotype', 'HP:0002664', (351, 356)) ('mutations', 'Var', (194, 203)) ('tumors', 'Disease', (351, 357)) ('tumor', 'Phenotype', 'HP:0002664', (318, 323)) ('SDH', 'Gene', (338, 341)) ('tumors', 'Disease', (318, 324)) ('succinate', 'Chemical', 'MESH:D019802', (217, 226)) ('PGL syndrome', 'Disease', (168, 180)) 49814 31883060 After careful consideration, the LVT was treated with the low molecular weight heparin dalteparine (5000E mane 7500E nocte sc daily) for 3 weeks followed by enoxaparine (10,000E sc daily) for another 7 weeks. ('dalteparine', 'Chemical', '-', (87, 98)) ('LVT', 'Disease', 'MESH:D013927', (33, 36)) ('heparin', 'Chemical', 'MESH:D006493', (79, 86)) ('LVT', 'Disease', (33, 36)) ('enoxaparine', 'Chemical', 'MESH:D017984', (157, 168)) ('5000E mane', 'Var', (100, 110)) 49855 31367219 Paragangliomas can be sporadic or familial and associated with various syndromes such as VHL disease, Carney triad, neurofibromatosis type 1, MEN 2A and 2B, and hereditary pheochromocytoma/paraganglioma syndrome associated with SDH gene mutations. ('hereditary pheochromocytoma', 'Disease', 'MESH:D010673', (161, 188)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (0, 14)) ('hereditary pheochromocytoma', 'Disease', (161, 188)) ('paraganglioma syndrome', 'Disease', (189, 211)) ('associated', 'Reg', (47, 57)) ('MEN 2A and 2B', 'Gene', '5979', (142, 155)) ('neurofibromatosis type 1', 'Gene', (116, 140)) ('SDH', 'Gene', '6390', (228, 231)) ('paraganglioma', 'Phenotype', 'HP:0002668', (189, 202)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (116, 133)) ('mutations', 'Var', (237, 246)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (189, 211)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (172, 188)) ('associated', 'Reg', (212, 222)) ('VHL disease', 'Disease', 'MESH:D006623', (89, 100)) ('SDH', 'Gene', (228, 231)) ('Paragangliomas', 'Disease', (0, 14)) ('VHL disease', 'Disease', (89, 100)) ('Carney triad', 'Disease', (102, 114)) ('Paragangliomas', 'Disease', 'MESH:D010235', (0, 14)) ('neurofibromatosis type 1', 'Gene', '4763', (116, 140)) 49857 31367219 It is currently thought, according to some studies, that 65%-80% of all pheochromocytomas/paragangliomas are associated with somatic or germline mutations and some can further be associated with one of the above syndromes. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (72, 89)) ('associated', 'Reg', (109, 119)) ('associated', 'Reg', (179, 189)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (72, 88)) ('germline mutations', 'Var', (136, 154)) ('paragangliomas', 'Disease', (90, 104)) ('pheochromocytomas', 'Disease', (72, 89)) ('paragangliomas', 'Disease', 'MESH:D010235', (90, 104)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (72, 89)) ('paraganglioma', 'Phenotype', 'HP:0002668', (90, 103)) ('paragangliomas', 'Phenotype', 'HP:0002668', (90, 104)) 49858 31367219 The American Society of Clinical Oncology recommends offering genetic screening for all patients with a risk of at least 10% of carrying a genetic mutation, especially when the results aid in diagnosis or influence the management of the patient or family members at hereditary risk of cancer. ('influence', 'Reg', (205, 214)) ('aid', 'Reg', (185, 188)) ('patient', 'Species', '9606', (88, 95)) ('Oncology', 'Phenotype', 'HP:0002664', (33, 41)) ('patients', 'Species', '9606', (88, 96)) ('genetic mutation', 'Var', (139, 155)) ('patient', 'Species', '9606', (237, 244)) ('cancer', 'Phenotype', 'HP:0002664', (285, 291)) ('cancer', 'Disease', (285, 291)) ('cancer', 'Disease', 'MESH:D009369', (285, 291)) 49860 31367219 Pheochromocytoma/paraganglioma syndrome is associated with a mutation in one SDH subunit that plays a critical role in mitochondria. ('SDH', 'Gene', (77, 80)) ('Pheochromocytoma', 'Disease', (0, 16)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (17, 39)) ('mutation', 'Var', (61, 69)) ('paraganglioma', 'Phenotype', 'HP:0002668', (17, 30)) ('SDH', 'Gene', '6390', (77, 80)) ('associated', 'Reg', (43, 53)) ('paraganglioma syndrome', 'Disease', (17, 39)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) 49861 31367219 Immunohistochemistry for SDHB has been shown to be an excellent screening tool for a mutation in SDH genes. ('SDH', 'Gene', (25, 28)) ('SDH', 'Gene', '6390', (97, 100)) ('mutation', 'Var', (85, 93)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDH', 'Gene', (97, 100)) ('SDHB', 'Gene', (25, 29)) ('SDH', 'Gene', '6390', (25, 28)) 49863 31367219 As a result, loss of tumoral immunohistochemical staining for SDHB occurs when there is germline mutation of SDHA, SDHB, SDHC, or SDHD accompanied by inactivation of the normal allele. ('SDHB', 'Gene', '6390', (115, 119)) ('SDHB', 'Gene', '6390', (62, 66)) ('SDHA', 'Gene', '6389', (109, 113)) ('tumoral', 'Disease', (21, 28)) ('SDHB', 'Gene', (115, 119)) ('tumoral', 'Disease', 'MESH:D009369', (21, 28)) ('SDHD', 'Gene', (130, 134)) ('SDHD', 'Gene', '6392', (130, 134)) ('SDHC', 'Gene', (121, 125)) ('loss', 'NegReg', (13, 17)) ('mutation', 'Var', (97, 105)) ('SDHC', 'Gene', '6391', (121, 125)) ('SDHA', 'Gene', (109, 113)) ('SDHB', 'Gene', (62, 66)) ('tumor', 'Phenotype', 'HP:0002664', (21, 26)) 49864 31367219 This makes loss of staining for SDHB a sensitive marker, suggestive of germline pathogenic variants of any of the SDH subunits. ('SDHB', 'Gene', '6390', (32, 36)) ('SDH', 'Gene', '6390', (114, 117)) ('SDHB', 'Gene', (32, 36)) ('SDH', 'Gene', '6390', (32, 35)) ('variants', 'Var', (91, 99)) ('SDH', 'Gene', (114, 117)) ('SDH', 'Gene', (32, 35)) 49865 31367219 Germline pathogenic variants in SDHA show loss of staining for SDHA, in addition to loss of staining for SDHB. ('staining', 'MPA', (50, 58)) ('variants', 'Var', (20, 28)) ('SDHA', 'Gene', '6389', (32, 36)) ('SDHB', 'Gene', '6390', (105, 109)) ('staining', 'MPA', (92, 100)) ('SDHA', 'Gene', (63, 67)) ('SDHB', 'Gene', (105, 109)) ('SDHA', 'Gene', (32, 36)) ('SDHA', 'Gene', '6389', (63, 67)) ('loss', 'NegReg', (42, 46)) 49909 30101131 Thus, patients with LNM had significantly larger tumors than those without LNM (Mann-Whitney U-test, P = 0.035). ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('LNM', 'Var', (20, 23)) ('tumors', 'Phenotype', 'HP:0002664', (49, 55)) ('tumors', 'Disease', 'MESH:D009369', (49, 55)) ('tumors', 'Disease', (49, 55)) ('patients', 'Species', '9606', (6, 14)) ('larger', 'PosReg', (42, 48)) 49932 30101131 Paraganglioma has similar morphological, immunohistochemical, and genetic features to GP (hypoxia-inducible factor-2alpha gain-of-function mutations have been detected in both GP and paraganglioma). ('paraganglioma', 'Disease', (183, 196)) ('Paraganglioma', 'Disease', (0, 13)) ('mutations', 'Var', (139, 148)) ('hypoxia-inducible factor-2alpha', 'Gene', '2034', (90, 121)) ('hypoxia-inducible factor-2alpha', 'Gene', (90, 121)) ('gain-of-function', 'PosReg', (122, 138)) ('paraganglioma', 'Disease', 'MESH:D010235', (183, 196)) ('paraganglioma', 'Phenotype', 'HP:0002668', (183, 196)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) 49941 23065809 DNAs extracted from 17 different cancer cell lines and 31 primary pheochromocytoma tumors were analyzed for deletion and mutation of RD using qPCR and direct DNA sequencing. ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('cancer', 'Disease', (33, 39)) ('cancer', 'Disease', 'MESH:D009369', (33, 39)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (66, 82)) ('pheochromocytoma tumors', 'Disease', (66, 89)) ('pheochromocytoma tumors', 'Disease', 'MESH:D010673', (66, 89)) ('tumors', 'Phenotype', 'HP:0002664', (83, 89)) ('cancer', 'Phenotype', 'HP:0002664', (33, 39)) ('mutation', 'Var', (121, 129)) ('deletion', 'Var', (108, 116)) 49943 23065809 While some of these RD deletion events occurred along with deletions of the entire INK4/ARF locus, other RD deletion events were independent of genetic alterations in p15, p14ARF, and p16. ('ARF', 'Disease', 'MESH:D058186', (88, 91)) ('p15', 'Gene', (167, 170)) ('p14ARF', 'Gene', (172, 178)) ('INK4', 'Gene', (83, 87)) ('deletions', 'Var', (59, 68)) ('occurred', 'Reg', (39, 47)) ('ARF', 'Disease', (88, 91)) ('p15', 'Gene', '1030', (167, 170)) ('ARF', 'Disease', 'MESH:D058186', (175, 178)) ('INK4', 'Gene', '1029', (83, 87)) ('p16', 'Gene', '1029', (184, 187)) ('ARF', 'Disease', (175, 178)) ('p14ARF', 'Gene', '1029', (172, 178)) ('p16', 'Gene', (184, 187)) 49945 23065809 This study demonstrates for the first time that deletion of the RD enhancer is a prevalent event in human cancer cells. ('cancer', 'Disease', 'MESH:D009369', (106, 112)) ('human', 'Species', '9606', (100, 105)) ('RD enhancer', 'Gene', (64, 75)) ('cancer', 'Disease', (106, 112)) ('deletion', 'Var', (48, 56)) ('cancer', 'Phenotype', 'HP:0002664', (106, 112)) 49956 23065809 The RD/CDC6 interaction provides a novel mechanism that is important in cell cycle control and carcinogenesis since its perturbation by RD alterations and/or increased expression of CDC6 may down-regulate both the Rb and P53 pathways. ('P53', 'Gene', (221, 224)) ('P53', 'Gene', '7157', (221, 224)) ('expression', 'MPA', (168, 178)) ('carcinogenesis', 'Disease', 'MESH:D063646', (95, 109)) ('alterations', 'Var', (139, 150)) ('carcinogenesis', 'Disease', (95, 109)) ('down-regulate', 'NegReg', (191, 204)) ('CDC6', 'Gene', '990', (182, 186)) ('CDC6', 'Gene', '990', (7, 11)) ('CDC6', 'Gene', (182, 186)) ('CDC6', 'Gene', (7, 11)) ('increased', 'PosReg', (158, 167)) 49962 23065809 Deletion, methylation, and point mutations of p16, p15, and p14ARF were evaluated as previously reported with primers and probes listed in Table 2. ('p14ARF', 'Gene', (60, 66)) ('p16', 'Gene', '1029', (46, 49)) ('point mutations', 'Var', (27, 42)) ('p15', 'Gene', (51, 54)) ('p14ARF', 'Gene', '1029', (60, 66)) ('p15', 'Gene', '1030', (51, 54)) ('p16', 'Gene', (46, 49)) 49968 23065809 Subsequently, the gene dosage of RD in different cancer cell lines and tumors was determined and the results were interpreted as follows: dosage <25%, homozygous deletion (RD-/-); dosage between 25% and 75%, hemizygous deletion (RD+/-); and dosage >75%, RD wild type (RD+/+). ('cancer', 'Phenotype', 'HP:0002664', (49, 55)) ('dosage between 25%', 'Var', (180, 198)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('cancer', 'Disease', 'MESH:D009369', (49, 55)) ('tumors', 'Disease', (71, 77)) ('dosage <25%', 'Var', (138, 149)) ('cancer', 'Disease', (49, 55)) ('tumors', 'Disease', 'MESH:D009369', (71, 77)) 49979 23065809 We first extracted genomic DNAs from 18 human cell lines (one normal oral epithelial cell line, 17 neoplastic cell lines) and investigated potential genetic abnormalities of RD including homozygous/hemizygous deletions and point mutations. ('point mutations', 'Var', (223, 238)) ('genetic abnormalities', 'Disease', 'MESH:D030342', (149, 170)) ('human', 'Species', '9606', (40, 45)) ('genetic abnormalities', 'Disease', (149, 170)) 49982 23065809 While four cell lines, SCC-9, UM-SCC-22A, PANC-1, and MIA PaCa-2, harbored homozygous deletions of RD, hemizygous deletions of RD were found in SCC-15, SCC-4, and SCC-25 cells. ('SCC-4', 'Gene', (152, 157)) ('SCC', 'Gene', '6317', (33, 36)) ('SCC', 'Gene', '6317', (23, 26)) ('SCC-9', 'CellLine', 'CVCL:1685', (23, 28)) ('SCC', 'Gene', (144, 147)) ('SCC-4', 'Gene', '23383', (152, 157)) ('SCC', 'Gene', (152, 155)) ('SCC', 'Gene', (163, 166)) ('SCC', 'Gene', '6317', (144, 147)) ('SCC', 'Gene', (33, 36)) ('deletions', 'Var', (86, 95)) ('SCC', 'Gene', '6317', (152, 155)) ('SCC', 'Gene', (23, 26)) ('PANC-1', 'CellLine', 'CVCL:0480', (42, 48)) ('SCC', 'Gene', '6317', (163, 166)) ('MIA PaCa-2', 'CellLine', 'CVCL:0428', (54, 64)) 49983 23065809 Interestingly, no point mutations of RD were identified in any of these 17 tumor cell lines, demonstrating that hemizygous (3/17) and homozygous (4/17) deletions are the major mechanisms to inactivate RD at the DNA level. ('inactivate', 'NegReg', (190, 200)) ('tumor', 'Disease', 'MESH:D009369', (75, 80)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('deletions', 'Var', (152, 161)) ('tumor', 'Disease', (75, 80)) 49984 23065809 Of the four RD-/- cell lines, UM-SCC-22A, PANC-1, and MIA PaCa-2 also harbored homozygous deletions of p15, p14ARF, and p16, indicating that the entire INK4/ARF locus was deleted in these cell lines. ('ARF', 'Disease', 'MESH:D058186', (111, 114)) ('SCC', 'Gene', '6317', (33, 36)) ('ARF', 'Disease', (111, 114)) ('p16', 'Gene', '1029', (120, 123)) ('p14ARF', 'Gene', '1029', (108, 114)) ('p16', 'Gene', (120, 123)) ('INK4', 'Gene', (152, 156)) ('ARF', 'Disease', 'MESH:D058186', (157, 160)) ('SCC', 'Gene', (33, 36)) ('p14ARF', 'Gene', (108, 114)) ('ARF', 'Disease', (157, 160)) ('p15', 'Gene', (103, 106)) ('deletions', 'Var', (90, 99)) ('INK4', 'Gene', '1029', (152, 156)) ('p15', 'Gene', '1030', (103, 106)) ('PANC-1', 'CellLine', 'CVCL:0480', (42, 48)) ('MIA PaCa-2', 'CellLine', 'CVCL:0428', (54, 64)) 49985 23065809 In contrast, SCC-9 harbored homozygous deletions of RD, p15, and p14ARF, but retained intact p16, suggesting that the deletion event in SCC-9 occurs at the upstream of the p16 gene. ('deletions', 'Var', (39, 48)) ('p14ARF', 'Gene', '1029', (65, 71)) ('p16', 'Gene', '1029', (93, 96)) ('SCC-9', 'Gene', (136, 141)) ('p16', 'Gene', (172, 175)) ('SCC-9', 'CellLine', 'CVCL:1685', (13, 18)) ('SCC-9', 'CellLine', 'CVCL:1685', (136, 141)) ('p16', 'Gene', (93, 96)) ('p14ARF', 'Gene', (65, 71)) ('p15', 'Gene', (56, 59)) ('p15', 'Gene', '1030', (56, 59)) ('p16', 'Gene', '1029', (172, 175)) 49986 23065809 Out of the three RD+/- cell lines, SCC-4 had intact p15, p14ARF, and p16 genes, indicative of RD-specific genetic alterations in this cell line; SCC-15 and SCC-25 had methylated p16 and homozygous deletion of p16, respectively, whereas their p15 and p14ARF genes remained intact, suggesting that there are two independent inactivating events targeting RD and p16, respectively, in SCC-15 and SCC-25. ('methylated', 'Var', (167, 177)) ('p16', 'Gene', (209, 212)) ('p16', 'Gene', (178, 181)) ('p14ARF', 'Gene', '1029', (250, 256)) ('SCC', 'Gene', (156, 159)) ('SCC', 'Gene', '6317', (35, 38)) ('p16', 'Gene', '1029', (209, 212)) ('SCC', 'Gene', '6317', (145, 148)) ('p15', 'Gene', '1030', (52, 55)) ('SCC-4', 'Gene', '23383', (35, 40)) ('SCC', 'Gene', '6317', (392, 395)) ('p16', 'Gene', '1029', (178, 181)) ('deletion', 'Var', (197, 205)) ('SCC', 'Gene', (35, 38)) ('SCC', 'Gene', (145, 148)) ('p14ARF', 'Gene', '1029', (57, 63)) ('SCC', 'Gene', (392, 395)) ('p14ARF', 'Gene', (250, 256)) ('p16', 'Gene', (359, 362)) ('p16', 'Gene', '1029', (359, 362)) ('SCC', 'Gene', '6317', (381, 384)) ('p15', 'Gene', (242, 245)) ('SCC-4', 'Gene', (35, 40)) ('p14ARF', 'Gene', (57, 63)) ('SCC', 'Gene', (381, 384)) ('p16', 'Gene', (69, 72)) ('p15', 'Gene', (52, 55)) ('SCC', 'Gene', '6317', (156, 159)) ('p16', 'Gene', '1029', (69, 72)) ('p15', 'Gene', '1030', (242, 245)) 49988 23065809 For example, CAL-27 and PC3 (both RD+/+) had promoter hypermethylation in p15 and p16, respectively, whereas DU145 had a point mutation (G T) in exon 2 of p16, which leads to mutated P16 (Asp74Tyr) and P14ARF (Arg88Leu) proteins. ('p15', 'Gene', (74, 77)) ('P16', 'Gene', (185, 188)) ('DU145', 'CellLine', 'CVCL:0105', (109, 114)) ('p15', 'Gene', '1030', (74, 77)) ('Arg88Leu', 'SUBSTITUTION', 'None', (212, 220)) ('mutated', 'MPA', (177, 184)) ('p16', 'Gene', (82, 85)) ('Arg88Leu', 'Var', (212, 220)) ('PC3', 'Gene', (24, 27)) ('p16', 'Gene', '1029', (82, 85)) ('Asp74Tyr', 'SUBSTITUTION', 'None', (190, 198)) ('P14ARF', 'Gene', '1029', (204, 210)) ('PC3', 'Gene', '3853', (24, 27)) ('Asp74Tyr', 'Var', (190, 198)) ('p16', 'Gene', (157, 160)) ('P14ARF', 'Gene', (204, 210)) ('point mutation', 'Var', (121, 135)) ('P16', 'Gene', '1029', (185, 188)) ('p16', 'Gene', '1029', (157, 160)) 49992 23065809 As expected, no expression of p15, p14ARF, and p16 was detected in cell lines with homozygous deletions of the entire INK4/ARF locus (UM-SCC-22A, PANC-1, and MIA PaCa-2). ('ARF', 'Disease', (38, 41)) ('p15', 'Gene', (30, 33)) ('p15', 'Gene', '1030', (30, 33)) ('PANC-1', 'CellLine', 'CVCL:0480', (146, 152)) ('MIA PaCa-2', 'CellLine', 'CVCL:0428', (158, 168)) ('SCC', 'Gene', '6317', (137, 140)) ('p16', 'Gene', (47, 50)) ('ARF', 'Disease', 'MESH:D058186', (123, 126)) ('p14ARF', 'Gene', '1029', (35, 41)) ('ARF', 'Disease', (123, 126)) ('deletions', 'Var', (94, 103)) ('p14ARF', 'Gene', (35, 41)) ('ARF', 'Disease', 'MESH:D058186', (38, 41)) ('p16', 'Gene', '1029', (47, 50)) ('INK4', 'Gene', '1029', (118, 122)) ('INK4', 'Gene', (118, 122)) ('SCC', 'Gene', (137, 140)) 49993 23065809 Similar results were observed with SCC-9, which has homozygous deletions of RD, p15, and p14ARF but intact p16, suggesting that the transcription of p16 in this cell line is silenced through yet-to-be identified mechanisms. ('p16', 'Gene', '1029', (149, 152)) ('p14ARF', 'Gene', (89, 95)) ('p16', 'Gene', '1029', (107, 110)) ('deletions', 'Var', (63, 72)) ('p16', 'Gene', (107, 110)) ('silenced', 'NegReg', (174, 182)) ('transcription', 'MPA', (132, 145)) ('p16', 'Gene', (149, 152)) ('p14ARF', 'Gene', '1029', (89, 95)) ('p15', 'Gene', (80, 83)) ('SCC-9', 'CellLine', 'CVCL:1685', (35, 40)) ('p15', 'Gene', '1030', (80, 83)) 50002 23065809 Interestingly, both p16 and p14ARF were over-expressed in DU145, a cell line harboring mutated P16 and P14ARF proteins. ('P14ARF', 'Gene', (103, 109)) ('mutated', 'Var', (87, 94)) ('p14ARF', 'Gene', '1029', (28, 34)) ('P16', 'Gene', '1029', (95, 98)) ('p16', 'Gene', (20, 23)) ('p14ARF', 'Gene', (28, 34)) ('DU145', 'CellLine', 'CVCL:0105', (58, 63)) ('over-expressed', 'PosReg', (40, 54)) ('p16', 'Gene', '1029', (20, 23)) ('P14ARF', 'Gene', '1029', (103, 109)) ('P16', 'Gene', (95, 98)) 50014 23065809 While the p16 gene is homozygously deleted in UM-SCC-22A, it is transcriptionally silenced in SCC-15 (through methylation) and SCC-9 (through unknown mechanisms). ('SCC', 'Gene', (127, 130)) ('SCC', 'Gene', (49, 52)) ('SCC', 'Gene', (94, 97)) ('SCC', 'Gene', '6317', (127, 130)) ('p16', 'Gene', (10, 13)) ('SCC', 'Gene', '6317', (49, 52)) ('SCC', 'Gene', '6317', (94, 97)) ('methylation', 'Var', (110, 121)) ('SCC-9', 'CellLine', 'CVCL:1685', (127, 132)) ('p16', 'Gene', '1029', (10, 13)) 50020 23065809 As listed in Table 3, homozygous and hemizygous deletions of RD were identified in one and three tumors, respectively, while no "normal" specimens harbored RD alterations. ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('deletions', 'Var', (48, 57)) ('tumors', 'Disease', (97, 103)) ('tumors', 'Phenotype', 'HP:0002664', (97, 103)) ('tumors', 'Disease', 'MESH:D009369', (97, 103)) 50021 23065809 The overall frequency of RD alterations in this cohort of pheochromocytomas is 13.0% (4/31). ('alterations', 'Var', (28, 39)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (58, 75)) ('pheochromocytomas', 'Disease', (58, 75)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (58, 75)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (58, 74)) 50022 23065809 In comparison, deletions (hemizygous and homozygous), point mutation, and aberrant CpG methylation of p16 were found in 9, 1, and 11 tumors with an overall frequency of 67.7% (21/31). ('aberrant CpG methylation', 'Var', (74, 98)) ('found', 'Reg', (111, 116)) ('tumors', 'Phenotype', 'HP:0002664', (133, 139)) ('tumors', 'Disease', (133, 139)) ('p16', 'Gene', (102, 105)) ('tumors', 'Disease', 'MESH:D009369', (133, 139)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('p16', 'Gene', '1029', (102, 105)) ('point mutation', 'Var', (54, 68)) ('deletions', 'Var', (15, 24)) 50023 23065809 In the group of four pheochromocytomas with RD alterations, one tumor (T21) harbored homozygous deletions of both RD and p16, and another tumor (T5) had hemizygous deletions of both RD and p16, indicating that alterations of RD and p16 in these two tumors may result from a single molecular event in the INK4/ARF locus. ('tumor', 'Disease', (138, 143)) ('deletions', 'Var', (164, 173)) ('tumor', 'Disease', (249, 254)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (21, 37)) ('tumor', 'Disease', 'MESH:D009369', (138, 143)) ('p16', 'Gene', (232, 235)) ('ARF', 'Disease', (309, 312)) ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) ('alterations', 'Var', (210, 221)) ('tumors', 'Disease', 'MESH:D009369', (249, 255)) ('tumor', 'Disease', 'MESH:D009369', (249, 254)) ('p16', 'Gene', '1029', (232, 235)) ('p16', 'Gene', (121, 124)) ('tumor', 'Phenotype', 'HP:0002664', (138, 143)) ('p16', 'Gene', '1029', (121, 124)) ('result from', 'Reg', (260, 271)) ('pheochromocytomas', 'Disease', (21, 38)) ('tumor', 'Phenotype', 'HP:0002664', (249, 254)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (21, 38)) ('ARF', 'Disease', 'MESH:D058186', (309, 312)) ('deletions', 'Var', (96, 105)) ('tumors', 'Phenotype', 'HP:0002664', (249, 255)) ('INK4', 'Gene', '1029', (304, 308)) ('tumor', 'Disease', (64, 69)) ('p16', 'Gene', (189, 192)) ('tumor', 'Disease', 'MESH:D009369', (64, 69)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (21, 38)) ('alterations', 'Var', (47, 58)) ('INK4', 'Gene', (304, 308)) ('tumors', 'Disease', (249, 255)) ('p16', 'Gene', '1029', (189, 192)) 50024 23065809 The remaining pheochromocytomas with RD alterations, T1 and T18L, harbored hemizygously deleted RD; however, the status of p16 in these two tumors were different: p16 was methylated in T18L, but remained intact in T1. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (14, 30)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (14, 31)) ('p16', 'Gene', '1029', (163, 166)) ('methylated', 'Var', (171, 181)) ('tumors', 'Disease', (140, 146)) ('p16', 'Gene', (123, 126)) ('pheochromocytomas', 'Disease', (14, 31)) ('tumors', 'Disease', 'MESH:D009369', (140, 146)) ('T18L', 'Mutation', 'p.T18L', (185, 189)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (14, 31)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('tumors', 'Phenotype', 'HP:0002664', (140, 146)) ('p16', 'Gene', (163, 166)) ('p16', 'Gene', '1029', (123, 126)) ('T18L', 'Mutation', 'p.T18L', (60, 64)) ('T18L', 'Var', (185, 189)) 50028 23065809 Importantly, the only tumor (T16L) exhibiting highly expressed P16 had an intact RD, but a point mutation in p16 leading to a partial loss of P16 function. ('p16', 'Gene', (109, 112)) ('tumor', 'Disease', 'MESH:D009369', (22, 27)) ('P16', 'Gene', '1029', (142, 145)) ('P16', 'Gene', (63, 66)) ('tumor', 'Phenotype', 'HP:0002664', (22, 27)) ('P16', 'Gene', (142, 145)) ('function', 'MPA', (146, 154)) ('p16', 'Gene', '1029', (109, 112)) ('tumor', 'Disease', (22, 27)) ('P16', 'Gene', '1029', (63, 66)) ('loss', 'NegReg', (134, 138)) ('point mutation', 'Var', (91, 105)) ('T16L', 'Mutation', 'p.T16L', (29, 33)) 50031 23065809 In a panel of 17 human cell lines derived from different types of cancers, up to 41.2% (7/17) demonstrated homozygous (4/17) or hemizygous (3/17) RD deletions. ('human', 'Species', '9606', (17, 22)) ('cancer', 'Phenotype', 'HP:0002664', (66, 72)) ('cancers', 'Phenotype', 'HP:0002664', (66, 73)) ('cancers', 'Disease', (66, 73)) ('cancers', 'Disease', 'MESH:D009369', (66, 73)) ('RD deletions', 'Var', (146, 158)) 50032 23065809 We also showed that in a cohort of 31 human pheochromocytoma tumors, three tumors harbored hemizygous deletions of RD and one tumor had homozygous deletions of RD. ('tumors', 'Disease', 'MESH:D009369', (75, 81)) ('tumor', 'Disease', 'MESH:D009369', (61, 66)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('tumors', 'Phenotype', 'HP:0002664', (61, 67)) ('tumor', 'Disease', (75, 80)) ('tumor', 'Disease', 'MESH:D009369', (75, 80)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (44, 60)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('tumors', 'Phenotype', 'HP:0002664', (75, 81)) ('tumors', 'Disease', (61, 67)) ('human', 'Species', '9606', (38, 43)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('tumors', 'Disease', (75, 81)) ('pheochromocytoma tumors', 'Disease', 'MESH:D010673', (44, 67)) ('tumor', 'Disease', (126, 131)) ('tumors', 'Disease', 'MESH:D009369', (61, 67)) ('pheochromocytoma tumors', 'Disease', (44, 67)) ('deletions', 'Var', (102, 111)) ('tumor', 'Disease', 'MESH:D009369', (126, 131)) ('tumor', 'Disease', (61, 66)) 50033 23065809 These results reveal that deletion of RD occurs in human cancer cells and tumor tissues with a considerable incidence (11/48, 22.9%). ('cancer', 'Disease', 'MESH:D009369', (57, 63)) ('tumor', 'Disease', 'MESH:D009369', (74, 79)) ('cancer', 'Disease', (57, 63)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('deletion', 'Var', (26, 34)) ('human', 'Species', '9606', (51, 56)) ('tumor', 'Disease', (74, 79)) ('cancer', 'Phenotype', 'HP:0002664', (57, 63)) 50035 23065809 Moreover, some cancer cell lines and tumors had intact RD, but harbored genetic alterations (i.e., deletion, methylation, and point mutations) in one or more of the p15, p14ARF, and p16 genes. ('tumors', 'Phenotype', 'HP:0002664', (37, 43)) ('methylation', 'Var', (109, 120)) ('p16', 'Gene', (182, 185)) ('cancer', 'Disease', (15, 21)) ('cancer', 'Disease', 'MESH:D009369', (15, 21)) ('p15', 'Gene', (165, 168)) ('p15', 'Gene', '1030', (165, 168)) ('point mutations', 'Var', (126, 141)) ('p14ARF', 'Gene', (170, 176)) ('p14ARF', 'Gene', '1029', (170, 176)) ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('p16', 'Gene', '1029', (182, 185)) ('deletion', 'Var', (99, 107)) ('tumors', 'Disease', (37, 43)) ('cancer', 'Phenotype', 'HP:0002664', (15, 21)) ('tumors', 'Disease', 'MESH:D009369', (37, 43)) ('alterations', 'Reg', (80, 91)) 50037 23065809 However, hemizygous and homozygous deletions of RD were identified both in diverse human cancer cell lines and pheochromocytoma tumor tissues, but not in non-malignant cells in vitro or non-tumor human tissue samples. ('tumor', 'Disease', 'MESH:D009369', (128, 133)) ('tumor', 'Disease', 'MESH:D009369', (190, 195)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (111, 127)) ('human', 'Species', '9606', (196, 201)) ('tumor', 'Phenotype', 'HP:0002664', (190, 195)) ('cancer', 'Disease', 'MESH:D009369', (89, 95)) ('human', 'Species', '9606', (83, 88)) ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('pheochromocytoma tumor', 'Disease', 'MESH:D010673', (111, 133)) ('tumor', 'Disease', (190, 195)) ('cancer', 'Disease', (89, 95)) ('deletions', 'Var', (35, 44)) ('tumor', 'Disease', (128, 133)) ('pheochromocytoma tumor', 'Disease', (111, 133)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) 50038 23065809 In contrast, a spectrum of genetic alterations of p15, p14ARF, and p16 were present in these cell lines and tumor specimens, including not only deletion, but also methylation and point mutations. ('tumor', 'Disease', 'MESH:D009369', (108, 113)) ('p14ARF', 'Gene', (55, 61)) ('p16', 'Gene', '1029', (67, 70)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('p14ARF', 'Gene', '1029', (55, 61)) ('tumor', 'Disease', (108, 113)) ('deletion', 'Var', (144, 152)) ('point mutations', 'Var', (179, 194)) ('methylation', 'Var', (163, 174)) ('p16', 'Gene', (67, 70)) ('p15', 'Gene', (50, 53)) ('p15', 'Gene', '1030', (50, 53)) 50039 23065809 Specifically, both methylation and deletion are major mechanisms to inactive p16 in pheochromocytomas as evidenced by their incidences of 29.0% (10/31) and 35.5% (11/31), respectively. ('p16', 'Gene', (77, 80)) ('methylation', 'Var', (19, 30)) ('inactive', 'NegReg', (68, 76)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (84, 101)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (84, 100)) ('p16', 'Gene', '1029', (77, 80)) ('pheochromocytomas', 'Disease', (84, 101)) ('deletion', 'Var', (35, 43)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (84, 101)) 50042 23065809 However, it is important to note that how genetic alterations of RD contribute to the regulation of tumor suppressors P15, P14ARF, and P16 as well as carcinogenesis remains to be further investigated. ('regulation', 'MPA', (86, 96)) ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('P16', 'Gene', '1029', (135, 138)) ('carcinogenesis', 'Disease', 'MESH:D063646', (150, 164)) ('P15', 'Gene', (118, 121)) ('tumor', 'Disease', (100, 105)) ('P15', 'Gene', '1030', (118, 121)) ('carcinogenesis', 'Disease', (150, 164)) ('contribute', 'Reg', (68, 78)) ('P14ARF', 'Gene', '1029', (123, 129)) ('genetic alterations', 'Var', (42, 61)) ('P16', 'Gene', (135, 138)) ('tumor', 'Disease', 'MESH:D009369', (100, 105)) ('P14ARF', 'Gene', (123, 129)) 50048 28738844 Analysis of SDHAF3 in familial and sporadic pheochromocytoma and paraganglioma Germline mutations in genes encoding subunits of succinate dehydrogenase (SDH) are associated with the development of pheochromocytoma (PC) and/or paraganglioma (PGL). ('pheochromocytoma', 'Disease', (197, 213)) ('mutations', 'Var', (88, 97)) ('paraganglioma', 'Disease', (226, 239)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (197, 213)) ('SDH', 'Gene', '6390', (153, 156)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (44, 60)) ('associated with', 'Reg', (162, 177)) ('paraganglioma', 'Disease', 'MESH:D010235', (226, 239)) ('succinate', 'Chemical', 'MESH:D019802', (128, 137)) ('pheochromocytoma', 'Disease', (44, 60)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (44, 60)) ('paraganglioma', 'Disease', (65, 78)) ('SDH', 'Gene', (153, 156)) ('paraganglioma', 'Disease', 'MESH:D010235', (65, 78)) ('paraganglioma', 'Phenotype', 'HP:0002668', (226, 239)) ('SDH', 'Gene', '6390', (12, 15)) ('SDHAF3', 'Gene', '57001', (12, 18)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (197, 213)) ('paraganglioma', 'Phenotype', 'HP:0002668', (65, 78)) ('SDHAF3', 'Gene', (12, 18)) ('SDH', 'Gene', (12, 15)) 50049 28738844 As assembly factors have been identified as playing a role in maturation of individual SDH subunits and assembly of the functioning SDH complex, we hypothesized that SDHAF3 variants may be associated with PC/PGL and functionality of SDH. ('SDH', 'Gene', '6390', (87, 90)) ('SDH', 'Gene', (233, 236)) ('SDH', 'Gene', '6390', (166, 169)) ('SDHAF3', 'Gene', (166, 172)) ('associated', 'Reg', (189, 199)) ('SDH', 'Gene', '6390', (132, 135)) ('SDHAF3', 'Gene', '57001', (166, 172)) ('variants', 'Var', (173, 181)) ('SDH', 'Gene', (87, 90)) ('SDH', 'Gene', (132, 135)) ('SDH', 'Gene', (166, 169)) ('SDH', 'Gene', '6390', (233, 236)) ('PC/PGL', 'Disease', (205, 211)) 50050 28738844 DNA was extracted from the blood of 37 individuals (from 23 families) with germline SDH mutations and 18 PC/PGL (15 sporadic, 3 familial) and screened for mutations using a custom gene panel, containing SDHAF3 (SDH assembly factor 3) as well as eight known PC/PGL susceptibility genes. ('SDH', 'Gene', '6390', (203, 206)) ('mutations', 'Var', (155, 164)) ('SDHAF3', 'Gene', '57001', (203, 209)) ('SDH assembly factor 3', 'Gene', (211, 232)) ('mutations', 'Var', (88, 97)) ('SDH assembly factor 3', 'Gene', '57001', (211, 232)) ('SDH', 'Gene', (203, 206)) ('SDH', 'Gene', '6390', (211, 214)) ('SDH', 'Gene', '6390', (84, 87)) ('SDHAF3', 'Gene', (203, 209)) ('SDH', 'Gene', (211, 214)) ('SDH', 'Gene', (84, 87)) 50052 28738844 Using massively parallel sequencing, we identified a variant in SDHAF3, c.157 T > C (p.Phe53Leu), associated with increased prevalence in familial and sporadic PC/PGL (6.6%) when compared to normal populations (1.2% [1000 Genomes], p = 0.003; 2.1% [Exome Aggregation Consortium], p = 0.0063). ('SDHAF3', 'Gene', '57001', (64, 70)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (85, 95)) ('c.157 T > C', 'Var', (72, 83)) ('SDHAF3', 'Gene', (64, 70)) ('c.157 T > C', 'Mutation', 'rs62624461', (72, 83)) 50053 28738844 In silico prediction tools suggest this variant is probably damaging to protein function, hence we assessed molecular and functional consequences of the resulting amino acid change (p.Phe53Leu) in yeast and human cells. ('yeast', 'Species', '4932', (197, 202)) ('variant', 'Var', (40, 47)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (182, 192)) ('amino acid change', 'Var', (163, 180)) ('human', 'Species', '9606', (207, 212)) ('protein function', 'MPA', (72, 88)) 50054 28738844 We showed that introduction of SDHAF3 p.Phe53Leu into Sdh7 (ortholog of SDHAF3 in humans) null yeast resulted in impaired function, as observed by its failure to restore SDH activity when expressed in Sdh7 null yeast relative to WT SDHAF3. ('SDHAF3', 'Gene', '57001', (232, 238)) ('function', 'MPA', (122, 130)) ('SDHAF3', 'Gene', (232, 238)) ('SDHAF3', 'Gene', '57001', (72, 78)) ('p.Phe53Leu', 'Var', (38, 48)) ('activity', 'MPA', (174, 182)) ('SDH', 'Gene', (170, 173)) ('SDH', 'Gene', (232, 235)) ('SDHAF3', 'Gene', (72, 78)) ('SDH', 'Gene', '6390', (31, 34)) ('yeast', 'Species', '4932', (95, 100)) ('SDH', 'Gene', '6390', (72, 75)) ('SDHAF3', 'Gene', '57001', (31, 37)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (38, 48)) ('Sdh7', 'Gene', (201, 205)) ('SDHAF3', 'Gene', (31, 37)) ('SDH', 'Gene', (31, 34)) ('SDH', 'Gene', (72, 75)) ('yeast', 'Species', '4932', (211, 216)) ('SDH', 'Gene', '6390', (232, 235)) ('SDH', 'Gene', '6390', (170, 173)) ('humans', 'Species', '9606', (82, 88)) ('Sdh7', 'Gene', (54, 58)) 50055 28738844 As SDHAF3 is involved in maturation of SDHB, we tested the functional impact of SDHAF3 c.157 T > C and various clinically relevant SDHB mutations on this interaction. ('SDHB', 'Gene', '6390', (131, 135)) ('c.157 T > C', 'Mutation', 'rs62624461', (87, 98)) ('SDHB', 'Gene', '6390', (39, 43)) ('SDHAF3', 'Gene', (80, 86)) ('SDHAF3', 'Gene', '57001', (3, 9)) ('SDHB', 'Gene', (131, 135)) ('c.157 T > C', 'Var', (87, 98)) ('SDHB', 'Gene', (39, 43)) ('SDHAF3', 'Gene', '57001', (80, 86)) ('mutations', 'Var', (136, 145)) ('tested', 'Reg', (48, 54)) ('SDHAF3', 'Gene', (3, 9)) 50056 28738844 Our in vitro studies in human cells show that SDHAF3 interacts with SDHB (residues 46 and 242), with impaired interaction observed in the presence of the SDHAF3 c.157 T > C variant. ('SDHAF3', 'Gene', '57001', (154, 160)) ('c.157 T > C', 'Var', (161, 172)) ('human', 'Species', '9606', (24, 29)) ('SDHB', 'Gene', '6390', (68, 72)) ('interacts', 'Interaction', (53, 62)) ('SDHAF3', 'Gene', (46, 52)) ('SDHB', 'Gene', (68, 72)) ('SDHAF3', 'Gene', (154, 160)) ('c.157 T > C', 'Mutation', 'rs62624461', (161, 172)) ('SDHAF3', 'Gene', '57001', (46, 52)) 50058 28738844 We have shown that SDHAF3 interacts directly with SDHB (residue 242 being key to this interaction), and that a variant in SDHAF3 (c.157 T > C [p.Phe53Leu]) may be more prevalent in individuals with PC/PGL, and is hypomorphic via impaired interaction with SDHB. ('SDHAF3', 'Gene', '57001', (122, 128)) ('SDHAF3', 'Gene', '57001', (19, 25)) ('hypomorphic via impaired', 'Disease', (213, 237)) ('hypomorphic via impaired', 'Disease', 'MESH:D009422', (213, 237)) ('SDHB', 'Gene', (50, 54)) ('c.157 T > C', 'Mutation', 'rs62624461', (130, 141)) ('interacts', 'Interaction', (26, 35)) ('PC/PGL', 'Disease', (198, 204)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (143, 153)) ('interaction', 'Interaction', (238, 249)) ('SDHB', 'Gene', '6390', (255, 259)) ('SDHAF3', 'Gene', (122, 128)) ('SDHAF3', 'Gene', (19, 25)) ('c.157 T > C', 'Var', (130, 141)) ('SDHB', 'Gene', (255, 259)) ('prevalent', 'Reg', (168, 177)) ('SDHB', 'Gene', '6390', (50, 54)) 50060 28738844 SDH is comprised of four nuclear encoded subunits (SDHA, B, C and D), and germline mutation in any of these SDH subunits is associated with a variable risk of developing neoplasia. ('neoplasia', 'Disease', (170, 179)) ('SDH', 'Gene', '6390', (51, 54)) ('SDH', 'Gene', '6390', (108, 111)) ('SDHA, B, C and D', 'Gene', '6389', (51, 67)) ('germline mutation', 'Var', (74, 91)) ('SDH', 'Gene', (0, 3)) ('neoplasia', 'Phenotype', 'HP:0002664', (170, 179)) ('SDH', 'Gene', (51, 54)) ('neoplasia', 'Disease', 'MESH:D009369', (170, 179)) ('SDH', 'Gene', (108, 111)) ('SDH', 'Gene', '6390', (0, 3)) 50061 28738844 Nevertheless, discordant phenotypes are observed both within and between families carrying the same SDH mutation, suggesting that other environmental, genetic or epigenetic factors influence the clinical phenotype. ('SDH', 'Gene', '6390', (100, 103)) ('SDH', 'Gene', (100, 103)) ('influence', 'Reg', (181, 190)) ('iron', 'Chemical', 'MESH:D007501', (139, 143)) ('mutation', 'Var', (104, 112)) 50062 28738844 SDH genes (SDHA, SDHB, SDHC, SDHD) act as classical tumor suppressors, such that germline heterozygous inactivating mutations coupled with somatic loss of the remaining wild-type allele leads to complete loss of enzyme function and development of associated tumors. ('tumor', 'Disease', (258, 263)) ('SDH', 'Gene', (11, 14)) ('tumor', 'Disease', (52, 57)) ('SDHA', 'Gene', (11, 15)) ('loss', 'NegReg', (204, 208)) ('loss', 'NegReg', (147, 151)) ('tumor', 'Disease', 'MESH:D009369', (258, 263)) ('tumor', 'Disease', 'MESH:D009369', (52, 57)) ('SDH', 'Gene', '6390', (0, 3)) ('SDHA', 'Gene', '6389', (11, 15)) ('tumors', 'Phenotype', 'HP:0002664', (258, 264)) ('SDH', 'Gene', (17, 20)) ('SDH', 'Gene', '6390', (23, 26)) ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('SDHD', 'Gene', '6392', (29, 33)) ('tumor', 'Phenotype', 'HP:0002664', (258, 263)) ('inactivating mutations', 'Var', (103, 125)) ('SDHC', 'Gene', '6391', (23, 27)) ('tumors', 'Disease', (258, 264)) ('SDH', 'Gene', (0, 3)) ('SDHB', 'Gene', '6390', (17, 21)) ('SDH', 'Gene', '6390', (29, 32)) ('SDH', 'Gene', '6390', (17, 20)) ('SDH', 'Gene', '6390', (11, 14)) ('SDH', 'Gene', (23, 26)) ('SDHD', 'Gene', (29, 33)) ('function', 'MPA', (219, 227)) ('tumors', 'Disease', 'MESH:D009369', (258, 264)) ('enzyme', 'Enzyme', (212, 218)) ('SDHB', 'Gene', (17, 21)) ('SDHC', 'Gene', (23, 27)) ('SDH', 'Gene', (29, 32)) 50063 28738844 SDHx mutations have been linked to tumorigenesis as a result of a number of downstream consequences. ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('linked', 'Reg', (25, 31)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('mutations', 'Var', (5, 14)) ('tumor', 'Disease', (35, 40)) ('SDHx', 'Chemical', '-', (0, 4)) ('SDHx', 'Gene', (0, 4)) 50066 28738844 Inhibition of the alpha-ketoglutarate-dependent dioxygenase, prolyl hydroxylase (PHD), leads to HIF stabilization, increased expression of HIF targets, and ultimately induction of a hypoxic response under normoxic conditions (pseudo-hypoxia). ('PHD', 'Disease', (81, 84)) ('hypoxic response', 'MPA', (182, 198)) ('increased', 'PosReg', (115, 124)) ('hypoxia', 'Disease', 'MESH:D000860', (233, 240)) ('expression', 'MPA', (125, 135)) ('hypoxia', 'Disease', (233, 240)) ('HIF', 'CPA', (96, 99)) ('Inhibition', 'Var', (0, 10)) ('PHD', 'Disease', 'MESH:D011547', (81, 84)) ('induction', 'Reg', (167, 176)) 50067 28738844 In line with this proposed mechanism of action, both increased stability of HIF and increased expression of HIF targets have been identified in SDHx-mutated paragangliomas and pheochromocytomas. ('paraganglioma', 'Phenotype', 'HP:0002668', (157, 170)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (176, 192)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (176, 193)) ('paragangliomas', 'Disease', (157, 171)) ('paragangliomas', 'Disease', 'MESH:D010235', (157, 171)) ('paragangliomas', 'Phenotype', 'HP:0002668', (157, 171)) ('stability', 'MPA', (63, 72)) ('pheochromocytomas', 'Disease', (176, 193)) ('SDHx', 'Chemical', '-', (144, 148)) ('SDHx-mutated', 'Var', (144, 156)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (176, 193)) ('increased', 'PosReg', (53, 62)) ('increased', 'PosReg', (84, 93)) ('expression', 'MPA', (94, 104)) ('SDHx-mutated', 'Gene', (144, 156)) 50071 28738844 To date, mutations affecting SDHAF1 (involved in maturation of SDHB) and SDHAF2 (required for covalent attachment of FAD to SDHA) have been associated with human diseases. ('SDHB', 'Gene', (63, 67)) ('associated', 'Reg', (140, 150)) ('SDHAF1', 'Gene', (29, 35)) ('SDHA', 'Gene', (73, 77)) ('SDHA', 'Gene', (124, 128)) ('mutations', 'Var', (9, 18)) ('SDHA', 'Gene', '6389', (29, 33)) ('SDHAF2', 'Gene', '54949', (73, 79)) ('SDHAF2', 'Gene', (73, 79)) ('SDHA', 'Gene', (29, 33)) ('SDHB', 'Gene', '6390', (63, 67)) ('human', 'Species', '9606', (156, 161)) ('SDHA', 'Gene', '6389', (73, 77)) ('SDHAF1', 'Gene', '644096', (29, 35)) ('SDHA', 'Gene', '6389', (124, 128)) 50072 28738844 SDHAF1 mutations have been identified in individuals with leukoencephalopathy, but not yet in subjects with paragangliomas or pheochromocytomas. ('pheochromocytomas', 'Disease', (126, 143)) ('identified', 'Reg', (27, 37)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (126, 143)) ('leukoencephalopathy', 'Disease', 'MESH:D056784', (58, 77)) ('paragangliomas', 'Disease', (108, 122)) ('paragangliomas', 'Disease', 'MESH:D010235', (108, 122)) ('paragangliomas', 'Phenotype', 'HP:0002668', (108, 122)) ('SDHAF1', 'Gene', '644096', (0, 6)) ('paraganglioma', 'Phenotype', 'HP:0002668', (108, 121)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (126, 143)) ('SDHAF1', 'Gene', (0, 6)) ('leukoencephalopathy', 'Disease', (58, 77)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (126, 142)) ('leukoencephalopathy', 'Phenotype', 'HP:0002352', (58, 77)) ('mutations', 'Var', (7, 16)) 50073 28738844 A SDHAF2 loss-of-function mutation (p.Gly78Arg) has been reported in two unrelated families with head and neck paragangliomas. ('p.Gly78Arg', 'Var', (36, 46)) ('neck paragangliomas', 'Disease', (106, 125)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (106, 125)) ('p.Gly78Arg', 'Mutation', 'rs113560320', (36, 46)) ('paragangliomas', 'Phenotype', 'HP:0002668', (111, 125)) ('paraganglioma', 'Phenotype', 'HP:0002668', (111, 124)) ('SDHAF2', 'Gene', (2, 8)) ('SDHAF2', 'Gene', '54949', (2, 8)) ('loss-of-function', 'NegReg', (9, 25)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (106, 125)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (97, 125)) 50074 28738844 In the tumors of affected individuals, this mutation was shown to impair flavinylation of SDHA. ('flavinylation', 'MPA', (73, 86)) ('mutation', 'Var', (44, 52)) ('SDHA', 'Gene', '6389', (90, 94)) ('tumors', 'Disease', (7, 13)) ('tumors', 'Disease', 'MESH:D009369', (7, 13)) ('tumors', 'Phenotype', 'HP:0002664', (7, 13)) ('SDHA', 'Gene', (90, 94)) ('impair', 'NegReg', (66, 72)) ('tumor', 'Phenotype', 'HP:0002664', (7, 12)) 50075 28738844 Additionally, in vitro experiments showed that the p.Gly78Arg mutant leads to complete loss of SDH activity, through impaired covalent flavinylation of SDHA and destabilization of the SDHAF2 protein. ('loss', 'NegReg', (87, 91)) ('destabilization', 'NegReg', (161, 176)) ('impaired covalent flavinylation of SDHA', 'Disease', 'MESH:D009422', (117, 156)) ('impaired covalent flavinylation of SDHA', 'Disease', (117, 156)) ('SDHAF2', 'Gene', '54949', (184, 190)) ('SDHAF2', 'Gene', (184, 190)) ('SDH', 'Gene', (184, 187)) ('SDH', 'Gene', '6390', (152, 155)) ('protein', 'Protein', (191, 198)) ('SDH', 'Gene', '6390', (95, 98)) ('p.Gly78Arg', 'Var', (51, 61)) ('SDH', 'Gene', '6390', (184, 187)) ('SDH', 'Gene', (152, 155)) ('activity', 'MPA', (99, 107)) ('SDH', 'Gene', (95, 98)) ('p.Gly78Arg', 'Mutation', 'rs113560320', (51, 61)) 50076 28738844 Subsequent studies in large cohorts of apparently sporadic paragangliomas and pheochromocytomas have failed to identify germline or somatic SDHAF2 mutations, suggesting that mutations within SDHAF2 may be rare. ('mutations', 'Var', (147, 156)) ('paragangliomas', 'Disease', (59, 73)) ('paragangliomas', 'Disease', 'MESH:D010235', (59, 73)) ('paragangliomas', 'Phenotype', 'HP:0002668', (59, 73)) ('paraganglioma', 'Phenotype', 'HP:0002668', (59, 72)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (78, 94)) ('SDHAF2', 'Gene', '54949', (191, 197)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (78, 95)) ('SDHAF2', 'Gene', '54949', (140, 146)) ('SDHAF2', 'Gene', (191, 197)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (78, 95)) ('pheochromocytomas', 'Disease', (78, 95)) ('SDHAF2', 'Gene', (140, 146)) 50078 28738844 Mutations in the LYR motif of human SDHAF1 were shown to attenuate interaction with iron-sulfur biogenesis components supporting a role for SDHAF1 in maturation of the holo-SDHB complex. ('human', 'Species', '9606', (30, 35)) ('SDHAF1', 'Gene', '644096', (36, 42)) ('SDHAF1', 'Gene', (36, 42)) ('SDHB', 'Gene', '6390', (173, 177)) ('SDHAF1', 'Gene', '644096', (140, 146)) ('SDHAF1', 'Gene', (140, 146)) ('SDHB', 'Gene', (173, 177)) ('Mutations', 'Var', (0, 9)) ('sulfur', 'Chemical', 'MESH:D013455', (89, 95)) ('iron', 'Chemical', 'MESH:D007501', (84, 88)) ('interaction', 'Interaction', (67, 78)) ('attenuate', 'NegReg', (57, 66)) 50081 28738844 We therefore hypothesized that mutations within the newly identified SDH assembly factor, SDHAF3, may be associated with the pathogenesis of pheochromocytoma and/or paraganglioma syndromes. ('pheochromocytoma', 'Disease', (141, 157)) ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (165, 188)) ('mutations', 'Var', (31, 40)) ('SDHAF3', 'Gene', (90, 96)) ('SDH', 'Gene', '6390', (69, 72)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (141, 157)) ('SDH', 'Gene', '6390', (90, 93)) ('paraganglioma', 'Phenotype', 'HP:0002668', (165, 178)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (141, 157)) ('paraganglioma syndromes', 'Disease', (165, 188)) ('SDH', 'Gene', (69, 72)) ('SDHAF3', 'Gene', '57001', (90, 96)) ('SDH', 'Gene', (90, 93)) ('associated', 'Reg', (105, 115)) 50082 28738844 Furthermore, given SDHAF3 is involved in the maturation of SDHB, we hypothesized that mutations within either of these genes may impair this process. ('impair', 'NegReg', (129, 135)) ('mutations', 'Var', (86, 95)) ('SDHAF3', 'Gene', '57001', (19, 25)) ('SDHAF3', 'Gene', (19, 25)) ('SDHB', 'Gene', '6390', (59, 63)) ('SDHB', 'Gene', (59, 63)) 50083 28738844 DNA was extracted from peripheral blood leukocytes of 37 individuals (from 23 families) with germline SDH mutations (16 SDHB, 1 SDHC and 6 SDHD families) and 100 individuals with no known disease (ie. ('SDH', 'Gene', (139, 142)) ('SDH', 'Gene', '6390', (128, 131)) ('SDHD', 'Gene', (139, 143)) ('SDHD', 'Gene', '6392', (139, 143)) ('SDH', 'Gene', (102, 105)) ('SDH', 'Gene', (120, 123)) ('SDHB', 'Gene', '6390', (120, 124)) ('SDHC', 'Gene', (128, 132)) ('SDH', 'Gene', '6390', (139, 142)) ('SDHC', 'Gene', '6391', (128, 132)) ('mutations', 'Var', (106, 115)) ('SDHB', 'Gene', (120, 124)) ('SDH', 'Gene', (128, 131)) ('SDH', 'Gene', '6390', (102, 105)) ('SDH', 'Gene', '6390', (120, 123)) 50087 28738844 A custom gene panel (TruSeq Custom Amplicon Assay, Illumina) was developed, encompassing our candidate gene - SDHAF3 (NM_020186); as well as eight known pheochromocytoma/paraganglioma suseptibility genes (MAX [NM_002382], SDHB [NM_003000], SDHC [NM_003001], SDHD [NM_003002], SDHAF2 [NM_017841], RET [NM_020975], TMEM127 [NM_017849] and VHL [NM_000551]). ('paraganglioma', 'Disease', (171, 184)) ('TMEM127', 'Gene', '55654', (314, 321)) ('SDHC', 'Gene', '6391', (241, 245)) ('paraganglioma', 'Disease', 'MESH:D010235', (171, 184)) ('SDHAF3', 'Gene', '57001', (111, 117)) ('VHL', 'Gene', (338, 341)) ('SDHB', 'Gene', (223, 227)) ('SDHAF3', 'Gene', (111, 117)) ('SDHAF2', 'Gene', (277, 283)) ('SDHAF2', 'Gene', '54949', (277, 283)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (154, 170)) ('paraganglioma', 'Phenotype', 'HP:0002668', (171, 184)) ('VHL', 'Gene', '7428', (338, 341)) ('SDHD', 'Gene', '6392', (259, 263)) ('RET', 'Gene', '5979', (297, 300)) ('SDHC', 'Gene', (241, 245)) ('pheochromocytoma', 'Disease', (154, 170)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (154, 170)) ('SDHD', 'Gene', (259, 263)) ('TMEM127', 'Gene', (314, 321)) ('[NM_020975]', 'Var', (301, 312)) ('SDHB', 'Gene', '6390', (223, 227)) ('RET', 'Gene', (297, 300)) 50089 28738844 Annotation of functional consequences to variant calls was performed using ANNOVAR (version 2013Jul), which incorporates various in silico tools, including (but not limited to) PolyPhen-2, SIFT, MutationTaster. ('SIFT', 'Disease', (189, 193)) ('variant', 'Var', (41, 48)) ('SIFT', 'Disease', 'None', (189, 193)) 50091 28738844 SDHAF3 variants identified by massively parallel sequencing were confirmed by Sanger sequencing. ('SDHAF3', 'Gene', (0, 6)) ('variants', 'Var', (7, 15)) ('SDHAF3', 'Gene', '57001', (0, 6)) 50097 28738844 For SDHAF3 and SDH2 sequence variants, site-directed mutagenesis was carried out using Phusion high-fidelity DNA polymerase (Thermo Fisher Scientific). ('SDH2', 'Gene', (15, 19)) ('variants', 'Var', (29, 37)) ('SDHAF3', 'Gene', '57001', (4, 10)) ('SDHAF3', 'Gene', (4, 10)) 50106 28738844 Anti-Sdh1, Sdh2 and Sdh3 were from a previous study. ('Sdh3', 'Gene', '6391', (20, 24)) ('Sdh2', 'Gene', (11, 15)) ('Sdh3', 'Gene', (20, 24)) ('Anti-Sdh1', 'Var', (0, 9)) 50108 28738844 Site-directed mutagenesis (QuikChange Lightning Site-Directed Mutagenesis Kit, Agilent) was used to produce the SDHAF3 variant (p.Phe53Leu [c.157 T > C, NM_020186]) and SDHB mutants (p.Ala43Pro [c.127G > C, NM_003000], p.Arg46Gly [c.136C > G], p.Arg46Gln [c.137G > A], p.Cys101Tyr [c.302G > A], p.Ile127Ser [c.380 T > G], p.Pro197Arg [c.590C > G], p.Arg242His [c.725G > A]). ('SDHAF3', 'Gene', '57001', (112, 118)) ('c.590C > G', 'Mutation', 'rs74315367', (335, 345)) ('p.Cys101Tyr [c.302G > A]', 'Var', (269, 293)) ('SDHB', 'Gene', (169, 173)) ('p.Pro197Arg [c.590C > G]', 'Var', (322, 346)) ('c.302G > A', 'Mutation', 'rs74315371', (282, 292)) ('p.Ala43Pro', 'Mutation', 'rs745559875', (183, 193)) ('c.157 T > C', 'Mutation', 'rs62624461', (140, 151)) ('SDHAF3', 'Gene', (112, 118)) ('p.Ile127Ser [c.380 T > G]', 'Var', (295, 320)) ('p.Arg242His [c.725G > A]', 'Var', (348, 372)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (128, 138)) ('p.Arg46Gln [c.137G > A]', 'Var', (244, 267)) ('p.Arg46Gly [c.136C > G]', 'Var', (219, 242)) ('c.127G > C', 'Mutation', 'c.127G>C', (195, 205)) ('p.Ala43Pro [c.127G > C', 'Var', (183, 205)) ('p.Arg46Gly', 'Mutation', 'rs74315370', (219, 229)) ('Q', 'Chemical', '-', (27, 28)) ('c.136C > G', 'Mutation', 'rs74315370', (231, 241)) ('c.380 T > G', 'Mutation', 'rs786201095', (308, 319)) ('p.Arg242His', 'Mutation', 'rs74315368', (348, 359)) ('p.Pro197Arg', 'Mutation', 'rs74315367', (322, 333)) ('SDHB', 'Gene', '6390', (169, 173)) ('c.137G > A', 'Mutation', 'rs772551056', (256, 266)) ('p.Ile127Ser', 'Mutation', 'rs786201095', (295, 306)) ('c.725G > A', 'Mutation', 'rs74315368', (361, 371)) ('p.Arg46Gln', 'Mutation', 'rs772551056', (244, 254)) ('p.Cys101Tyr', 'Mutation', 'rs74315371', (269, 280)) 50109 28738844 The SDHAF3 variant was generated in a commercially available plasmid, pCMV6-SDHAF3-Myc-DDK (RC204626, Origene); while the SDHB mutants were generated in a plasmid (pEGFP-N1; 6085-1, Clonetech) containing wild-type SDHB. ('SDHAF3', 'Gene', (76, 82)) ('SDHB', 'Gene', '6390', (214, 218)) ('SDHB', 'Gene', '6390', (122, 126)) ('Myc', 'Gene', '4609', (83, 86)) ('SDHB', 'Gene', (214, 218)) ('SDHAF3', 'Gene', '57001', (4, 10)) ('SDHB', 'Gene', (122, 126)) ('Myc', 'Gene', (83, 86)) ('SDHAF3', 'Gene', '57001', (76, 82)) ('variant', 'Var', (11, 18)) ('SDHAF3', 'Gene', (4, 10)) 50130 28738844 Citrate synthase: Approximately 20 mug of protein was added to 470 muL of reaction mixture consisting (in final concentrations) 5 mM of KH2PO4, 45 mM of K2HPO4, 100 muM 5, 5'-dithio-bis-(2-nitrobenzoic acid) (DTNB) in distilled water at pH 7.4. ('KH2PO4', 'Chemical', '-', (136, 142)) ('water', 'Chemical', 'MESH:D014867', (228, 233)) ('DTNB', 'Chemical', '-', (209, 213)) ('KH2PO4', 'Var', (136, 142)) ("5, 5'-dithio-bis-(2-nitrobenzoic acid)", 'Chemical', 'MESH:D004228', (169, 207)) ('Citrate synthase', 'Gene', '1431', (0, 16)) ('K2HPO4', 'Chemical', 'MESH:C013216', (153, 159)) ('Citrate synthase', 'Gene', (0, 16)) 50135 28738844 During validation of our targeted PC/PGL gene panel (MiSeq platform), we noted that one individual (S11_1) with a previously identified germline SDHB splice-site mutation (within intron 3 [IVS3]) also harbored a germline SDHAF3 c.157 T > C (p.Phe53Leu) variant (rs62624461). ('SDHB', 'Gene', '6390', (145, 149)) ('c.157 T > C', 'Mutation', 'rs62624461', (228, 239)) ('SDHB', 'Gene', (145, 149)) ('SDHAF3', 'Gene', (221, 227)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (241, 251)) ('c.157 T > C', 'Var', (228, 239)) ('rs62624461', 'Var', (262, 272)) ('SDHAF3', 'Gene', '57001', (221, 227)) ('rs62624461', 'Mutation', 'rs62624461', (262, 272)) 50137 28738844 Although this SDHAF3 variant has been identified in population studies (minor allele frequency [MAF] 0.0118 [1000 Genomes_Phase 3_ALL] and 0.0209 [Exome Aggregation Consortium, ExAC]), it is predicted to be damaging by several in silico tools (score of 0.777 [PolyPhen-2 v2.2.2r398], score of 0 [SIFT]). ('SIFT', 'Disease', (296, 300)) ('SDHAF3', 'Gene', (14, 20)) ('SIFT', 'Disease', 'None', (296, 300)) ('variant', 'Var', (21, 28)) ('SDHAF3', 'Gene', '57001', (14, 20)) 50138 28738844 Since SDHAF3 was recently shown to be involved in mediating SDHB maturation, we determined the prevalence of the SDHAF3 c.157 T > C variant among other subjects either with SDH-related PC/PGL or apparently sporadic PC/PGL, in comparison with normal controls. ('SDH', 'Gene', (113, 116)) ('SDH', 'Gene', (60, 63)) ('SDHAF3', 'Gene', (6, 12)) ('SDHAF3', 'Gene', '57001', (113, 119)) ('SDH', 'Gene', (6, 9)) ('SDHB', 'Gene', '6390', (60, 64)) ('SDH', 'Gene', '6390', (173, 176)) ('SDHB', 'Gene', (60, 64)) ('SDH', 'Gene', '6390', (6, 9)) ('SDHAF3', 'Gene', '57001', (6, 12)) ('PC/PGL', 'Disease', (185, 191)) ('c.157 T > C', 'Mutation', 'rs62624461', (120, 131)) ('SDH', 'Gene', '6390', (60, 63)) ('SDH', 'Gene', '6390', (113, 116)) ('SDH', 'Gene', (173, 176)) ('SDHAF3', 'Gene', (113, 119)) ('c.157 T > C', 'Var', (120, 131)) 50139 28738844 The frequency of SDHAF3 c.157 T > C in our Australian population was determined by direct sequencing of 100 healthy controls (48% males) with no known familial association to SDH-related disease. ('SDH', 'Gene', (175, 178)) ('c.157 T > C', 'Var', (24, 35)) ('SDH', 'Gene', (17, 20)) ('SDHAF3', 'Gene', '57001', (17, 23)) ('SDH', 'Gene', '6390', (175, 178)) ('SDHAF3', 'Gene', (17, 23)) ('c.157 T > C', 'Mutation', 'rs62624461', (24, 35)) ('SDH', 'Gene', '6390', (17, 20)) 50140 28738844 Of 200 alleles assessed, 6 were found to exhibit the minor allele (c.157C [NM_020186], p.Phe53Leu, rs62624461), resulting in a minor allele frequency (MAF) of 0.0300, which is consistent with the MAF reported in ExAC (0.0209; p = 0.452) (Table 1). ('p.Phe53Leu', 'Var', (87, 97)) ('c.157C [NM_020186]', 'Var', (67, 85)) ('rs62624461', 'Mutation', 'rs62624461', (99, 109)) ('rs62624461', 'Var', (99, 109)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (87, 97)) 50141 28738844 When looking at all disease-affected individuals (familial and sporadic, n = 38; Table 1), there is an increased prevalence (6.6% [MAF 0.0658]) of the SDHAF3 c.157 T > C variant when compared to the larger populations of disease-free individuals, specifically 1000 Genomes (Phase 3_ALL) and ExAC populations (1.2% [MAF 0.0118, p = 0.003] and 2.1% [MAF 0.0209, p = 0.022], respectively). ('SDHAF3', 'Gene', '57001', (151, 157)) ('c.157 T > C', 'Mutation', 'rs62624461', (158, 169)) ('SDHAF3', 'Gene', (151, 157)) ('c.157 T > C', 'Var', (158, 169)) 50142 28738844 However, no statistically significant difference was observed when comparing the prevalence of the SDHAF3 c.157 T > C variant in disease-affected individuals (familial and sporadic) to a smaller disesase-free population (Australian, 3.0% [MAF 0.0300, p = 0.300]; Table 1). ('SDHAF3', 'Gene', (99, 105)) ('c.157 T > C', 'Mutation', 'rs62624461', (106, 117)) ('SDHAF3', 'Gene', '57001', (99, 105)) ('c.157 T > C', 'Var', (106, 117)) 50143 28738844 To further assess the potential role of SDHAF3 in pheochromoctyomas and/or paragangliomas, 15 tumors of apparently sporadic origin were assessed for the presence of the SDHAF3 c.157 T > C (Additional file 1: Table S2). ('15 tumors', 'Disease', (91, 100)) ('SDHAF3', 'Gene', '57001', (40, 46)) ('15 tumors', 'Disease', 'MESH:C567447', (91, 100)) ('paragangliomas', 'Disease', 'MESH:D010235', (75, 89)) ('c.157 T > C', 'Mutation', 'rs62624461', (176, 187)) ('pheochromoctyomas', 'Disease', 'None', (50, 67)) ('paraganglioma', 'Phenotype', 'HP:0002668', (75, 88)) ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('SDHAF3', 'Gene', (169, 175)) ('pheochromoctyomas', 'Disease', (50, 67)) ('SDHAF3', 'Gene', (40, 46)) ('c.157 T > C', 'Var', (176, 187)) ('tumors', 'Phenotype', 'HP:0002664', (94, 100)) ('SDHAF3', 'Gene', '57001', (169, 175)) ('paragangliomas', 'Disease', (75, 89)) ('paragangliomas', 'Phenotype', 'HP:0002668', (75, 89)) 50144 28738844 SDHB immunohistochemical assessment was performed in those cases where formalin-fixed paraffin embedded tissue was available (n = 9; Table S2), only one of which harbors the SDHAF3 c.157 T > C variant (#9). ('SDHAF3', 'Gene', '57001', (174, 180)) ('c.157 T > C', 'Var', (181, 192)) ('paraffin', 'Chemical', 'MESH:D010232', (86, 94)) ('formalin', 'Chemical', 'MESH:D005557', (71, 79)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHAF3', 'Gene', (174, 180)) ('c.157 T > C', 'Mutation', 'rs62624461', (181, 192)) ('SDHB', 'Gene', (0, 4)) 50145 28738844 SDHB immunohistochemistry was positive in all cases, with no apparent difference in staining intensity or pattern observed between the SDHAF3 c.157 T > C variant case and the wild-type cases (Additional file 1: Table S2). ('SDHAF3', 'Gene', (135, 141)) ('c.157 T > C', 'Var', (142, 153)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHAF3', 'Gene', '57001', (135, 141)) ('SDHB', 'Gene', (0, 4)) ('c.157 T > C', 'Mutation', 'rs62624461', (142, 153)) 50147 28738844 presence of pheochromocytoma and/or paraganglioma) were assessed for the presence of SDHAF3 c.157 T > C (Additional file 2: Table S1). ('SDHAF3', 'Gene', '57001', (85, 91)) ('paraganglioma', 'Disease', (36, 49)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (12, 28)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (12, 28)) ('c.157 T > C', 'Mutation', 'rs62624461', (92, 103)) ('paraganglioma', 'Disease', 'MESH:D010235', (36, 49)) ('SDHAF3', 'Gene', (85, 91)) ('c.157 T > C', 'Var', (92, 103)) ('paraganglioma', 'Phenotype', 'HP:0002668', (36, 49)) ('pheochromocytoma', 'Disease', (12, 28)) 50150 28738844 Taken together, of 23 individuals with SDH-related familial pheochromocytoma and/or paraganglioma, two were heterozygous for SDHAF3 c.157 T > C, giving a MAF of 0.0435 (Table 1) which was not significantly different from our Australian population of healthy controls (p = 0.646) nor from the 1000 Genomes (Phase 3_ALL) (p = 0.106) or ExAC (p = 0.251) populations (Table 1). ('paraganglioma', 'Disease', (84, 97)) ('SDHAF3', 'Gene', (125, 131)) ('c.157 T > C', 'Mutation', 'rs62624461', (132, 143)) ('SDH', 'Gene', (39, 42)) ('paraganglioma', 'Phenotype', 'HP:0002668', (84, 97)) ('SDH', 'Gene', '6390', (125, 128)) ('paraganglioma', 'Disease', 'MESH:D010235', (84, 97)) ('c.157 T > C', 'Var', (132, 143)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (51, 76)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (60, 76)) ('SDHAF3', 'Gene', '57001', (125, 131)) ('SDH', 'Gene', '6390', (39, 42)) ('SDH', 'Gene', (125, 128)) ('familial pheochromocytoma', 'Disease', (51, 76)) 50151 28738844 When only SDHB-mutated individuals from our cohort are considered, then co-carriage of SDHAF3 c.157 T > C (MAF 0.0625) does not differ from the Australian (p = 0.603), 1000 Genomes (Phase 3_ALL) (p = 0.057) or ExAC (p = 0.144) populations (Table 1). ('SDHAF3', 'Gene', (87, 93)) ('c.157 T > C', 'Var', (94, 105)) ('SDHAF3', 'Gene', '57001', (87, 93)) ('SDHB', 'Gene', '6390', (10, 14)) ('SDHB', 'Gene', (10, 14)) ('c.157 T > C', 'Mutation', 'rs62624461', (94, 105)) 50152 28738844 In addition to individual S11_1, an additional 14 SDHB mutation carrying members of this family (S11) were assessed (Additional file 3: Table S3). ('SDHB', 'Gene', (50, 54)) ('SDHB', 'Gene', '6390', (50, 54)) ('mutation', 'Var', (55, 63)) 50153 28738844 The SDHAF3 c.157 T > C variant was identified in an additional seven SDHB mutation carrying family members. ('SDHB', 'Gene', (69, 73)) ('c.157 T > C', 'Var', (11, 22)) ('SDHAF3', 'Gene', '57001', (4, 10)) ('SDHB', 'Gene', '6390', (69, 73)) ('c.157 T > C', 'Mutation', 'rs62624461', (11, 22)) ('SDHAF3', 'Gene', (4, 10)) 50154 28738844 Five individuals in this family have (to date) presented with pheochromocytoma and/or paraganglioma (S11_1, S11_2, S11_3, S11_4 and S11_5). ('pheochromocytoma', 'Disease', 'MESH:D010673', (62, 78)) ('paraganglioma', 'Disease', 'MESH:D010235', (86, 99)) ('S11_1', 'Var', (101, 106)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('paraganglioma', 'Phenotype', 'HP:0002668', (86, 99)) ('S11_3', 'Var', (115, 120)) ('paraganglioma', 'Disease', (86, 99)) ('S11_4 and S11_5', 'Var', (122, 137)) ('presented with', 'Reg', (47, 61)) ('pheochromocytoma', 'Disease', (62, 78)) 50155 28738844 Of those with germline SDHB mutation and SDHAF3 variant (n = 7), three (43%) have developed pheochromocytomas or paragangliomas (S11_1, S11_2 and S11_3); while two (25%) of those with germline SDHB mutation and wild-type SDHAF3 (n = 8) have developed paragangliomas (p = 0.47, Chi-squared test). ('paragangliomas', 'Disease', 'MESH:D010235', (113, 127)) ('paragangliomas', 'Phenotype', 'HP:0002668', (113, 127)) ('paragangliomas', 'Disease', (251, 265)) ('SDHB', 'Gene', '6390', (23, 27)) ('paraganglioma', 'Phenotype', 'HP:0002668', (113, 126)) ('SDHAF3', 'Gene', '57001', (41, 47)) ('mutation', 'Var', (28, 36)) ('SDHAF3', 'Gene', (41, 47)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (92, 108)) ('SDHB', 'Gene', (23, 27)) ('SDHAF3', 'Gene', '57001', (221, 227)) ('pheochromocytomas or paragangliomas', 'Disease', (92, 127)) ('variant', 'Var', (48, 55)) ('paragangliomas', 'Disease', (113, 127)) ('pheochromocytomas or paragangliomas', 'Disease', 'MESH:D010673', (92, 127)) ('SDHB', 'Gene', '6390', (193, 197)) ('paragangliomas', 'Disease', 'MESH:D010235', (251, 265)) ('SDHAF3', 'Gene', (221, 227)) ('paraganglioma', 'Phenotype', 'HP:0002668', (251, 264)) ('paragangliomas', 'Phenotype', 'HP:0002668', (251, 265)) ('developed', 'PosReg', (82, 91)) ('SDHB', 'Gene', (193, 197)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (92, 109)) 50156 28738844 Of note, the tumors of individuals S11_1, S11_2 and S11_4 all exhibited loss of the normal SDHB allele and retention of the mutated allele (SDHB IVS3 splice-site mutation). ('loss', 'NegReg', (72, 76)) ('tumors', 'Disease', (13, 19)) ('tumors', 'Disease', 'MESH:D009369', (13, 19)) ('tumors', 'Phenotype', 'HP:0002664', (13, 19)) ('SDHB', 'Gene', '6390', (91, 95)) ('S11_2', 'Var', (42, 47)) ('SDHB', 'Gene', (91, 95)) ('SDHB', 'Gene', '6390', (140, 144)) ('S11_4', 'Var', (52, 57)) ('SDHB', 'Gene', (140, 144)) ('tumor', 'Phenotype', 'HP:0002664', (13, 18)) ('S11_1', 'Var', (35, 40)) 50157 28738844 Additionally, immunohistochemical assessment demonstrated loss of SDHB staining in all three tumors from individuals S11_1, S11_2 and S11_4. ('SDHB', 'Gene', (66, 70)) ('loss', 'NegReg', (58, 62)) ('S11_4', 'Var', (134, 139)) ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('staining', 'MPA', (71, 79)) ('tumors', 'Disease', 'MESH:D009369', (93, 99)) ('tumors', 'Phenotype', 'HP:0002664', (93, 99)) ('SDHB', 'Gene', '6390', (66, 70)) ('tumors', 'Disease', (93, 99)) 50159 28738844 The expression of wild-type (WT) SDHAF3 in yeast cells lacking Sdh7, a yeast ortholog of SDHAF3, enhanced respiratory growth of mutant cells; however, the SDHAF3 p.Phe53Leu variant failed to fully rescue the respiratory growth defect (Fig. ('yeast', 'Species', '4932', (71, 76)) ('yeast', 'Species', '4932', (43, 48)) ('SDHAF3', 'Gene', (155, 161)) ('SDHAF3', 'Gene', '57001', (89, 95)) ('Sdh7', 'Gene', (63, 67)) ('SDHAF3', 'Gene', (33, 39)) ('mutant', 'Var', (128, 134)) ('respiratory growth defect', 'Disease', (208, 233)) ('enhanced', 'PosReg', (97, 105)) ('SDHAF3', 'Gene', '57001', (155, 161)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (162, 172)) ('SDHAF3', 'Gene', (89, 95)) ('respiratory growth defect', 'Disease', 'MESH:D012131', (208, 233)) ('respiratory', 'MPA', (106, 117)) ('SDHAF3', 'Gene', '57001', (33, 39)) ('p.Phe53Leu variant', 'Var', (162, 180)) 50161 28738844 Interestingly, the SDHAF3 p.Phe53Leu variant did not restore SQR activity in sdh7 cells, in contrast to the effect of WT SDHAF3 (Fig. ('SDHAF3', 'Gene', '57001', (122, 128)) ('SDHAF3', 'Gene', '57001', (19, 25)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (26, 36)) ('p.Phe53Leu variant', 'Var', (26, 44)) ('SQR activity', 'CPA', (61, 73)) ('SDHAF3', 'Gene', (122, 128)) ('SDHAF3', 'Gene', (19, 25)) ('Q', 'Chemical', '-', (62, 63)) 50162 28738844 1b), suggesting that the p.Phe53Leu substitution in SDHAF3 is a hypomorphic mutation that contributes to SDH deficiency. ('SDHAF3', 'Gene', (52, 58)) ('SDH deficiency', 'Disease', (105, 119)) ('SDHAF3', 'Gene', '57001', (52, 58)) ('contributes', 'Reg', (90, 101)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (25, 35)) ('p.Phe53Leu substitution', 'Var', (25, 48)) ('SDH deficiency', 'Disease', 'MESH:D007153', (105, 119)) 50164 28738844 We found that steady-state levels of SDHAF3 p.Phe53Leu were equal to those of WT SDHAF3 in sdh7 cells, consistent with stable expression of SDHAF3 p.Phe53Leu (Fig. ('p.Phe53Leu', 'Mutation', 'rs62624461', (148, 158)) ('SDHAF3', 'Gene', '57001', (81, 87)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (44, 54)) ('p.Phe53Leu', 'Var', (148, 158)) ('SDHAF3', 'Gene', (37, 43)) ('SDHAF3', 'Gene', '57001', (141, 147)) ('SDHAF3', 'Gene', (81, 87)) ('SDHAF3', 'Gene', '57001', (37, 43)) ('SDHAF3', 'Gene', (141, 147)) 50165 28738844 Meanwhile, substitution of residues in the LYR motif (p.Tyr13Ala and p.Arg14Ala) dramatically decreased SDHAF3 levels (Fig. ('SDHAF3', 'Gene', (104, 110)) ('p.Tyr13Ala', 'Mutation', 'p.Y13A', (54, 64)) ('p.Arg14Ala', 'Var', (69, 79)) ('p.Arg14Ala', 'Mutation', 'p.R14A', (69, 79)) ('SDHAF3', 'Gene', '57001', (104, 110)) ('decreased', 'NegReg', (94, 103)) ('p.Tyr13Ala', 'Var', (54, 64)) 50170 28738844 Lane 2 and 4), suggesting that SDHAF3 p.Phe53Leu may be capable of interacting with Sdh2. ('SDHAF3', 'Gene', (31, 37)) ('interacting', 'Interaction', (67, 78)) ('Sdh2', 'Gene', (84, 88)) ('SDHAF3', 'Gene', '57001', (31, 37)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (38, 48)) ('p.Phe53Leu', 'Var', (38, 48)) 50173 28738844 We exploited this phenotype to further confirm the physical interaction between SDHAF3 p.Phe53Leu and Sdh2. ('p.Phe53Leu', 'Var', (87, 97)) ('SDHAF3', 'Gene', (80, 86)) ('Sdh2', 'Gene', (102, 106)) ('SDHAF3', 'Gene', '57001', (80, 86)) ('interaction', 'Interaction', (60, 71)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (87, 97)) 50174 28738844 We performed immunoprecipitation of SDHAF3 p.Phe53Leu with mitochondrial lysates from sdh7 cells wherein Sdh2-His6Myc2 is exogenously expressed. ('SDHAF3', 'Gene', '57001', (36, 42)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (43, 53)) ('p.Phe53Leu', 'Var', (43, 53)) ('SDHAF3', 'Gene', (36, 42)) ('Myc', 'Gene', '4609', (115, 118)) ('Myc', 'Gene', (115, 118)) 50176 28738844 To assess the effect of the SDHAF3 p.Phe53Leu variant in mammalian cells, SDHAF3 was knocked down in HEK293 cells using siRNA, and the effects on SDH (succinate dehydrogenase activity) measured. ('SDH', 'Gene', (74, 77)) ('HEK293', 'CellLine', 'CVCL:0045', (101, 107)) ('succinate', 'Chemical', 'MESH:D019802', (151, 160)) ('SDH', 'Gene', '6390', (28, 31)) ('SDHAF3', 'Gene', '57001', (74, 80)) ('mammalian', 'Species', '9606', (57, 66)) ('SDH', 'Gene', '6390', (146, 149)) ('SDH', 'Gene', (28, 31)) ('293 cells', 'CellLine', 'CVCL:0045', (104, 113)) ('SDHAF3', 'Gene', (74, 80)) ('knocked down', 'NegReg', (85, 97)) ('SDHAF3', 'Gene', '57001', (28, 34)) ('SDH', 'Gene', '6390', (74, 77)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (35, 45)) ('SDH', 'Gene', (146, 149)) ('SDHAF3', 'Gene', (28, 34)) ('p.Phe53Leu', 'Var', (35, 45)) 50177 28738844 A reduction in SDH activity was observed in SDHAF3 knockdown cells compared to WT cells (p = 0.0132; Fig. ('SDH', 'Gene', (44, 47)) ('SDHAF3', 'Gene', '57001', (44, 50)) ('reduction', 'NegReg', (2, 11)) ('SDH', 'Gene', '6390', (15, 18)) ('SDH', 'Gene', '6390', (44, 47)) ('SDHAF3', 'Gene', (44, 50)) ('SDH', 'Gene', (15, 18)) ('knockdown', 'Var', (51, 60)) 50178 28738844 Following SDHAF3 knockdown, re-introduction of WT SDHAF3 lead to restored SDH activity (Fig. ('SDH', 'Gene', (74, 77)) ('SDHAF3', 'Gene', '57001', (50, 56)) ('SDH', 'Gene', '6390', (10, 13)) ('SDH', 'Gene', (10, 13)) ('SDHAF3', 'Gene', (50, 56)) ('SDH', 'Gene', '6390', (50, 53)) ('SDHAF3', 'Gene', '57001', (10, 16)) ('SDH', 'Gene', '6390', (74, 77)) ('knockdown', 'Var', (17, 26)) ('SDH', 'Gene', (50, 53)) ('SDHAF3', 'Gene', (10, 16)) 50179 28738844 Further to this, the p.Phe53Leu variant was also able to restore SDH activity to the same extent as the WT SDHAF3 (p = 0.1486; Fig. ('SDH', 'Gene', '6390', (65, 68)) ('restore', 'PosReg', (57, 64)) ('SDHAF3', 'Gene', (107, 113)) ('SDH', 'Gene', '6390', (107, 110)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (21, 31)) ('SDHAF3', 'Gene', '57001', (107, 113)) ('SDH', 'Gene', (65, 68)) ('p.Phe53Leu', 'Var', (21, 31)) ('SDH', 'Gene', (107, 110)) 50180 28738844 Western blotting of SDHB failed to show any significant differences in expression on re-introduction of the WT SDHAF3 and p.Phe53Leu variant, demonstrating that the observed effects on SDH activity were SDHAF3 dependent (data not shown). ('SDHAF3', 'Gene', (111, 117)) ('SDH', 'Gene', '6390', (185, 188)) ('activity', 'MPA', (189, 197)) ('SDH', 'Gene', '6390', (203, 206)) ('SDHAF3', 'Gene', '57001', (203, 209)) ('SDH', 'Gene', (20, 23)) ('SDH', 'Gene', '6390', (111, 114)) ('SDH', 'Gene', (185, 188)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (122, 132)) ('SDH', 'Gene', (203, 206)) ('p.Phe53Leu', 'Var', (122, 132)) ('SDHB', 'Gene', '6390', (20, 24)) ('SDHAF3', 'Gene', '57001', (111, 117)) ('SDHAF3', 'Gene', (203, 209)) ('SDH', 'Gene', (111, 114)) ('SDHB', 'Gene', (20, 24)) ('SDH', 'Gene', '6390', (20, 23)) 50183 28738844 This interaction was impaired with the introduction of the SDHAF3 p.Phe53Leu variant (Fig. ('SDHAF3', 'Gene', (59, 65)) ('impaired', 'NegReg', (21, 29)) ('SDHAF3', 'Gene', '57001', (59, 65)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (66, 76)) ('interaction', 'Interaction', (5, 16)) ('p.Phe53Leu', 'Var', (66, 76)) 50184 28738844 Further assessment of the interaction between SDHB and SDHAF3 was carried out using clinically relevant SDHB mutants. ('SDHB', 'Gene', '6390', (46, 50)) ('SDHB', 'Gene', (46, 50)) ('SDHAF3', 'Gene', (55, 61)) ('interaction', 'Interaction', (26, 37)) ('SDHAF3', 'Gene', '57001', (55, 61)) ('SDHB', 'Gene', '6390', (104, 108)) ('mutants', 'Var', (109, 116)) ('SDHB', 'Gene', (104, 108)) 50185 28738844 Introduction of SDHB mutants with WT SDHAF3 impaired normal SDHB-SDHAF3 interaction to varying degrees (Fig. ('mutants', 'Var', (21, 28)) ('SDHAF3', 'Gene', (65, 71)) ('interaction', 'Interaction', (72, 83)) ('impaired', 'NegReg', (44, 52)) ('SDHB', 'Gene', '6390', (60, 64)) ('SDHB', 'Gene', '6390', (16, 20)) ('SDHB', 'Gene', (60, 64)) ('SDHB', 'Gene', (16, 20)) ('SDHAF3', 'Gene', (37, 43)) ('SDHAF3', 'Gene', '57001', (65, 71)) ('SDHAF3', 'Gene', '57001', (37, 43)) 50186 28738844 Interestingly, complete abrogation of the SDHB-SDHAF3 interaction was seen with the SDHB p.Arg242His mutant; reduced interaction was observed for all other mutants, with the exception of the SDHB p.Ile127Ser mutant that appeared to be unaffected. ('abrogation', 'NegReg', (24, 34)) ('SDHAF3', 'Gene', '57001', (47, 53)) ('SDHB', 'Gene', (191, 195)) ('interaction', 'Interaction', (117, 128)) ('p.Ile127Ser', 'Var', (196, 207)) ('SDHB', 'Gene', '6390', (84, 88)) ('SDHB', 'Gene', '6390', (191, 195)) ('p.Ile127Ser', 'Mutation', 'rs786201095', (196, 207)) ('p.Arg242His', 'Mutation', 'rs74315368', (89, 100)) ('p.Arg242His', 'Var', (89, 100)) ('SDHB', 'Gene', (84, 88)) ('SDHAF3', 'Gene', (47, 53)) ('interaction', 'Interaction', (54, 65)) ('SDHB', 'Gene', '6390', (42, 46)) ('SDHB', 'Gene', (42, 46)) 50188 28738844 2b), the complete loss of interaction observed on introduction of the SDHB p.Arg242His mutant is highly suggestive of p.Arg242 being a putative interaction site for SDHAF3. ('interaction', 'Interaction', (144, 155)) ('Arg242', 'Chemical', '-', (120, 126)) ('loss', 'NegReg', (18, 22)) ('SDHB', 'Gene', '6390', (70, 74)) ('SDHB', 'Gene', (70, 74)) ('p.Arg242', 'Var', (118, 126)) ('p.Arg242His', 'Mutation', 'rs74315368', (75, 86)) ('p.Arg242His', 'Var', (75, 86)) ('SDHAF3', 'Gene', '57001', (165, 171)) ('interaction', 'Interaction', (26, 37)) ('SDHAF3', 'Gene', (165, 171)) ('Arg242', 'Chemical', '-', (77, 83)) 50189 28738844 The interaction observed between WT SDHB and SDHAF3 p.Phe53Leu was also impaired, to varying degrees, with the introduction of SDHB mutants (Fig. ('SDHAF3', 'Gene', (45, 51)) ('introduction', 'Reg', (111, 123)) ('impaired', 'NegReg', (72, 80)) ('interaction', 'Interaction', (4, 15)) ('SDHB', 'Gene', '6390', (36, 40)) ('SDHB', 'Gene', (36, 40)) ('SDHB', 'Gene', '6390', (127, 131)) ('mutants', 'Var', (132, 139)) ('SDHAF3', 'Gene', '57001', (45, 51)) ('SDHB', 'Gene', (127, 131)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (52, 62)) 50190 28738844 Complete loss of interaction was not only observed with the SDHB p.Arg242His mutant but also with mutants affecting residue 46 (p.Arg46Gly and p.Arg46Gln). ('p.Arg46Gly', 'Mutation', 'rs74315370', (128, 138)) ('p.Arg46Gln', 'Var', (143, 153)) ('interaction', 'Interaction', (17, 28)) ('SDHB', 'Gene', '6390', (60, 64)) ('p.Arg46Gln', 'Mutation', 'rs772551056', (143, 153)) ('p.Arg46Gly', 'Var', (128, 138)) ('loss', 'NegReg', (9, 13)) ('SDHB', 'Gene', (60, 64)) ('p.Arg242His', 'Mutation', 'rs74315368', (65, 76)) ('p.Arg242His', 'Var', (65, 76)) 50191 28738844 Interestingly, enhanced binding was observed with SDHB p.Ile127Ser and p.Cys101Tyr mutants; whereas no effect on interaction was evident with SDHB p.Ala43Pro and p.Pro197Arg mutants. ('p.Ala43Pro', 'Mutation', 'rs745559875', (147, 157)) ('SDHB', 'Gene', (142, 146)) ('p.Pro197Arg', 'Var', (162, 173)) ('p.Cys101Tyr', 'Mutation', 'rs74315371', (71, 82)) ('SDHB', 'Gene', (50, 54)) ('binding', 'Interaction', (24, 31)) ('p.Pro197Arg', 'Mutation', 'rs74315367', (162, 173)) ('p.Ile127Ser', 'Var', (55, 66)) ('p.Cys101Tyr', 'Var', (71, 82)) ('p.Ile127Ser', 'Mutation', 'rs786201095', (55, 66)) ('SDHB', 'Gene', '6390', (142, 146)) ('enhanced', 'PosReg', (15, 23)) ('SDHB', 'Gene', '6390', (50, 54)) 50194 28738844 Complete abrogation of SDHB-SDHAF3 interaction, following introduction of SDHB p.Arg46Gly and p.Arg46Gln mutants with SDHAF3 p.Phe53Leu (Fig. ('p.Arg46Gly', 'Var', (79, 89)) ('SDHB', 'Gene', '6390', (23, 27)) ('SDHB', 'Gene', '6390', (74, 78)) ('p.Arg46Gln', 'Var', (94, 104)) ('SDHAF3', 'Gene', (118, 124)) ('interaction', 'Interaction', (35, 46)) ('SDHB', 'Gene', (74, 78)) ('abrogation', 'NegReg', (9, 19)) ('SDHAF3', 'Gene', '57001', (28, 34)) ('SDHB', 'Gene', (23, 27)) ('p.Arg46Gly', 'Mutation', 'rs74315370', (79, 89)) ('SDHAF3', 'Gene', '57001', (118, 124)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (125, 135)) ('p.Arg46Gln', 'Mutation', 'rs772551056', (94, 104)) ('SDHAF3', 'Gene', (28, 34)) 50196 28738844 Additional studies in yeast revealed that Sdh2 p.Arg235His, which corresponds to the SDHB p.Arg242His mutation, resulted in impairment of SDH function. ('impairment of SDH function', 'Disease', 'MESH:D003072', (124, 150)) ('impairment of SDH function', 'Disease', (124, 150)) ('yeast', 'Species', '4932', (22, 27)) ('p.Arg235His', 'Var', (47, 58)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('p.Arg242His', 'Mutation', 'rs74315368', (90, 101)) ('p.Arg242His', 'Var', (90, 101)) ('Sdh2', 'Gene', (42, 46)) ('p.Arg235His', 'Mutation', 'p.R235H', (47, 58)) 50197 28738844 Compared to WT Sdh2, sdh2 cells expressing Sdh2 p.Arg235His exhibited reduced SQR activity (Fig. ('Q', 'Chemical', '-', (80, 81)) ('Sdh2', 'Gene', (44, 48)) ('p.Arg235His', 'Mutation', 'p.R235H', (49, 60)) ('sdh2', 'Gene', '6390', (21, 25)) ('sdh2', 'Gene', (21, 25)) ('reduced', 'NegReg', (71, 78)) ('SQR activity', 'CPA', (79, 91)) ('p.Arg235His', 'Var', (49, 60)) 50198 28738844 Interestingly, the substitution of p.Arg235 with His did not affect SDH activity (Fig. ('p.Arg235', 'Var', (35, 43)) ('p.Arg235 with His', 'Mutation', 'p.R235H', (35, 52)) ('SDH', 'Gene', '6390', (68, 71)) ('SDH', 'Gene', (68, 71)) 50200 28738844 The 3Fe-4S cluster in SDHB is in close juxtaposition to p.Arg242 (Fig. ('p.Arg242', 'Var', (56, 64)) ('SDHB', 'Gene', '6390', (22, 26)) ('Arg242', 'Chemical', '-', (58, 64)) ('SDHB', 'Gene', (22, 26)) 50203 28738844 Given that p.Arg242 in SDHB (p.Arg235 in Sdh2) is critical for the interaction between SDHB and SDHAF3 (Fig. ('p.Arg242', 'Var', (11, 19)) ('SDHAF3', 'Gene', (96, 102)) ('SDHB', 'Gene', '6390', (23, 27)) ('Sdh2', 'Gene', (41, 45)) ('SDHB', 'Gene', (23, 27)) ('p.Arg242 in SDHB', 'Mutation', 'rs74315368', (11, 27)) ('SDHAF3', 'Gene', '57001', (96, 102)) ('interaction', 'Interaction', (67, 78)) ('Arg235', 'Chemical', '-', (31, 37)) ('SDHB', 'Gene', '6390', (87, 91)) ('SDHB', 'Gene', (87, 91)) 50204 28738844 2b, lane 9), it is possible that the 3Fe-4S cluster may become more susceptible to ROS-related damage in SDHB p.Arg242His mutants. ('SDHB', 'Gene', '6390', (105, 109)) ('SDHB', 'Gene', (105, 109)) ('ROS', 'Chemical', 'MESH:D017382', (83, 86)) ('p.Arg242His', 'Mutation', 'rs74315368', (110, 121)) ('p.Arg242His', 'Var', (110, 121)) 50205 28738844 However, we cannot completely rule out the possibility that the Q binding site is altered in cells harboring SDHB p.Arg242His. ('p.Arg242His', 'Mutation', 'rs74315368', (114, 125)) ('SDHB', 'Gene', '6390', (109, 113)) ('SDHB', 'Gene', (109, 113)) ('Q', 'Chemical', '-', (64, 65)) ('p.Arg242His', 'Var', (114, 125)) 50206 28738844 In this study, we have identified a variant in the SDH assembly factor 3 (SDHAF3, c.157 T > C [p.Phe53Leu]) that may be associated with increased prevalence of pheochromocytoma and/or paraganglioma (PC/PGL). ('associated', 'Reg', (120, 130)) ('c.157 T > C [', 'Var', (82, 95)) ('paraganglioma', 'Disease', 'MESH:D010235', (184, 197)) ('pheochromocytoma', 'Disease', (160, 176)) ('SDH assembly factor 3', 'Gene', '57001', (51, 72)) ('SDHAF3', 'Gene', '57001', (74, 80)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (95, 105)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (160, 176)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (160, 176)) ('c.157 T > C', 'Mutation', 'rs62624461', (82, 93)) ('paraganglioma', 'Phenotype', 'HP:0002668', (184, 197)) ('SDHAF3', 'Gene', (74, 80)) ('paraganglioma', 'Disease', (184, 197)) ('SDH assembly factor 3', 'Gene', (51, 72)) 50208 28738844 Furthermore, our in vitro studies in human cells show that SDHAF3 interacts with SDHB (residues 46 and 242), and that interaction between SDHAF3 p.Phe53Leu and SDHB is impaired. ('p.Phe53Leu', 'Var', (145, 155)) ('SDHAF3', 'Gene', (59, 65)) ('SDHB', 'Gene', '6390', (160, 164)) ('SDHAF3', 'Gene', (138, 144)) ('SDHB', 'Gene', (160, 164)) ('residues 46', 'Var', (87, 98)) ('SDHB', 'Gene', '6390', (81, 85)) ('interaction', 'Interaction', (118, 129)) ('SDHAF3', 'Gene', '57001', (59, 65)) ('SDHB', 'Gene', (81, 85)) ('SDHAF3', 'Gene', '57001', (138, 144)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (145, 155)) ('impaired', 'NegReg', (168, 176)) ('human', 'Species', '9606', (37, 42)) ('interacts', 'Interaction', (66, 75)) 50210 28738844 Germline mutations within any of its four subunits (SDHA, B, C and D) have been associated with development of a number of tumors, including pheochromocytoma and/or paraganglioma, gastrointestinal stromal tumors, renal cancer, and pituitary adenomas. ('Germline mutations', 'Var', (0, 18)) ('tumors', 'Disease', 'MESH:D009369', (123, 129)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (141, 157)) ('renal cancer', 'Disease', (213, 225)) ('renal cancer', 'Phenotype', 'HP:0009726', (213, 225)) ('tumors', 'Phenotype', 'HP:0002664', (205, 211)) ('pheochromocytoma', 'Disease', (141, 157)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (141, 157)) ('paraganglioma', 'Phenotype', 'HP:0002668', (165, 178)) ('renal cancer', 'Disease', 'MESH:D007680', (213, 225)) ('associated with', 'Reg', (80, 95)) ('tumor', 'Phenotype', 'HP:0002664', (205, 210)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (180, 211)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (180, 211)) ('tumors', 'Disease', (205, 211)) ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('tumors', 'Disease', 'MESH:D009369', (205, 211)) ('tumors', 'Disease', (123, 129)) ('cancer', 'Phenotype', 'HP:0002664', (219, 225)) ('gastrointestinal stromal tumors', 'Disease', (180, 211)) ('paraganglioma', 'Disease', (165, 178)) ('SDHA, B, C and D', 'Gene', '6389', (52, 68)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (231, 249)) ('paraganglioma', 'Disease', 'MESH:D010235', (165, 178)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (231, 249)) ('pituitary adenomas', 'Disease', (231, 249)) 50212 28738844 To date, loss-of-function mutations in SDHAF1 (biallelic) and SDHAF2 have been associated with infantile leukoencephalopathy and head and neck paragangliomas, respectively. ('SDHAF1', 'Gene', '644096', (39, 45)) ('SDHAF2', 'Gene', (62, 68)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (138, 157)) ('SDHAF1', 'Gene', (39, 45)) ('SDHAF2', 'Gene', '54949', (62, 68)) ('paragangliomas', 'Phenotype', 'HP:0002668', (143, 157)) ('paraganglioma', 'Phenotype', 'HP:0002668', (143, 156)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (129, 157)) ('leukoencephalopathy', 'Disease', (105, 124)) ('infantile leukoencephalopathy', 'Phenotype', 'HP:0007105', (95, 124)) ('mutations', 'Var', (26, 35)) ('leukoencephalopathy', 'Phenotype', 'HP:0002352', (105, 124)) ('neck paragangliomas', 'Disease', (138, 157)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (138, 157)) ('leukoencephalopathy', 'Disease', 'MESH:D056784', (105, 124)) ('loss-of-function', 'NegReg', (9, 25)) 50215 28738844 Taken together, we hypothesized that mutations within the newly identified SDH assembly factor, SDHAF3, may be associated with the pathogenesis of pheochromocytoma and/or paraganglioma syndromes. ('paraganglioma', 'Phenotype', 'HP:0002668', (171, 184)) ('SDH', 'Gene', '6390', (96, 99)) ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (171, 194)) ('SDHAF3', 'Gene', (96, 102)) ('paraganglioma syndromes', 'Disease', (171, 194)) ('SDH', 'Gene', (96, 99)) ('associated', 'Reg', (111, 121)) ('mutations', 'Var', (37, 46)) ('SDH', 'Gene', '6390', (75, 78)) ('SDHAF3', 'Gene', '57001', (96, 102)) ('pheochromocytoma', 'Disease', (147, 163)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (147, 163)) ('SDH', 'Gene', (75, 78)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (147, 163)) 50216 28738844 In this study, we identified a SDHAF3 c.157 T > C (p.Phe53Leu) variant in familial and sporadic cases of PC/PGL, observing a minor allele frequency (MAF) of 0.0658. ('SDHAF3', 'Gene', (31, 37)) ('SDHAF3', 'Gene', '57001', (31, 37)) ('c.157 T > C', 'Mutation', 'rs62624461', (38, 49)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (51, 61)) ('c.157 T > C', 'Var', (38, 49)) ('PC/PGL', 'Disease', (105, 111)) 50218 28738844 This prompted us to perform additional studies, to clarify the role that the SDHAF3 p.Phe53Leu variant may play in the pathogenesis of PC/PGL. ('p.Phe53Leu', 'Mutation', 'rs62624461', (84, 94)) ('SDHAF3', 'Gene', '57001', (77, 83)) ('p.Phe53Leu', 'Var', (84, 94)) ('SDHAF3', 'Gene', (77, 83)) ('PC/PGL', 'Disease', (135, 141)) 50219 28738844 Through yeast studies we were able to show that introduction of the SDHAF3 p.Phe53Leu variant, into Sdh7 null yeast (ortholog of SDHAF3 in humans) resulted in impaired function, observed by its failure to fully restore SDH activity when expressed in Sdh7 null yeast relative to wild-type (WT) SDHAF3. ('SDH', 'Gene', (68, 71)) ('SDHAF3', 'Gene', '57001', (129, 135)) ('Sdh7', 'Gene', (100, 104)) ('p.Phe53Leu variant', 'Var', (75, 93)) ('SDH', 'Gene', (219, 222)) ('SDHAF3', 'Gene', (129, 135)) ('yeast', 'Species', '4932', (8, 13)) ('SDH', 'Gene', (129, 132)) ('activity', 'MPA', (223, 231)) ('SDH', 'Gene', '6390', (293, 296)) ('function', 'MPA', (168, 176)) ('SDHAF3', 'Gene', '57001', (293, 299)) ('yeast', 'Species', '4932', (110, 115)) ('humans', 'Species', '9606', (139, 145)) ('impaired', 'NegReg', (159, 167)) ('SDHAF3', 'Gene', (293, 299)) ('yeast', 'Species', '4932', (260, 265)) ('SDH', 'Gene', (293, 296)) ('SDH', 'Gene', '6390', (68, 71)) ('SDH', 'Gene', '6390', (219, 222)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (75, 85)) ('SDHAF3', 'Gene', '57001', (68, 74)) ('SDH', 'Gene', '6390', (129, 132)) ('SDHAF3', 'Gene', (68, 74)) 50220 28738844 Taken together, these findings indicate that although SDHAF3 p.Phe53Leu is at best a very low penetrance allele for PC/PGL per se, it may play a modifying role as observed by its hypomorphic activity. ('SDHAF3', 'Gene', '57001', (54, 60)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (61, 71)) ('modifying', 'Reg', (145, 154)) ('p.Phe53Leu', 'Var', (61, 71)) ('SDHAF3', 'Gene', (54, 60)) 50222 28738844 In this study, two PC/PGL tumors from patients harboring germline SDHB (IVS3 splice-site) mutation and SDHAF3 (c.157 T > C) variant showed loss of SDHB staining by immunohistochemistry. ('staining', 'MPA', (152, 160)) ('SDHB', 'Gene', (66, 70)) ('SDHAF3', 'Gene', (103, 109)) ('PGL tumors', 'Disease', 'MESH:D010235', (22, 32)) ('c.157 T > C', 'Mutation', 'rs62624461', (111, 122)) ('SDHB', 'Gene', '6390', (66, 70)) ('loss', 'NegReg', (139, 143)) ('SDHAF3', 'Gene', '57001', (103, 109)) ('PGL tumors', 'Disease', (22, 32)) ('c.157 T > C', 'Var', (111, 122)) ('SDHB', 'Gene', '6390', (147, 151)) ('SDHB', 'Gene', (147, 151)) ('patients', 'Species', '9606', (38, 46)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('mutation', 'Var', (90, 98)) ('tumors', 'Phenotype', 'HP:0002664', (26, 32)) 50223 28738844 This raises the question of how SDHAF3 c.157 T > C can play a role in PC/PGL tumorigenesis, in SDH-deficient tumors. ('SDH-deficient tumors', 'Disease', (95, 115)) ('SDHAF3', 'Gene', '57001', (32, 38)) ('c.157 T > C', 'Mutation', 'rs62624461', (39, 50)) ('tumor', 'Disease', 'MESH:D009369', (77, 82)) ('SDH-deficient tumors', 'Disease', 'MESH:D009369', (95, 115)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('SDHAF3', 'Gene', (32, 38)) ('tumor', 'Phenotype', 'HP:0002664', (77, 82)) ('PC/PGL', 'Disease', (70, 76)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('play', 'Reg', (55, 59)) ('tumor', 'Disease', (77, 82)) ('tumors', 'Phenotype', 'HP:0002664', (109, 115)) ('tumor', 'Disease', (109, 114)) ('c.157 T > C', 'Var', (39, 50)) 50224 28738844 Clearly, by the time that inactivation of both SDHB alleles has occurred in the tumor, SDHAF3 c.157 T > C presumably has no additional role, as SDHAF3 appears to interact specifically with SDHB. ('tumor', 'Disease', 'MESH:D009369', (80, 85)) ('SDHAF3', 'Gene', '57001', (144, 150)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('interact', 'Interaction', (162, 170)) ('SDHAF3', 'Gene', (87, 93)) ('c.157 T > C', 'Var', (94, 105)) ('SDHB', 'Gene', '6390', (47, 51)) ('SDHB', 'Gene', (47, 51)) ('tumor', 'Disease', (80, 85)) ('SDHAF3', 'Gene', '57001', (87, 93)) ('SDHB', 'Gene', '6390', (189, 193)) ('SDHAF3', 'Gene', (144, 150)) ('SDHB', 'Gene', (189, 193)) ('c.157 T > C', 'Mutation', 'rs62624461', (94, 105)) 50225 28738844 Nevertheless, we conjecture that the germline presence of this hypomorphic SDHAF3 c.157 T > C allele may over time lead to instability of SDH. ('SDHAF3', 'Gene', '57001', (75, 81)) ('c.157 T > C', 'Var', (82, 93)) ('SDH', 'Gene', '6390', (138, 141)) ('c.157 T > C', 'Mutation', 'rs62624461', (82, 93)) ('SDH', 'Gene', '6390', (75, 78)) ('SDH', 'Gene', (138, 141)) ('SDHAF3', 'Gene', (75, 81)) ('instability', 'MPA', (123, 134)) ('SDH', 'Gene', (75, 78)) ('lead to', 'Reg', (115, 122)) 50226 28738844 Further, as SDHB is a known tumor suppressor and hence requires inactivation of both alleles for tumorigenesis, the timeframe between SDHB germline (first hit) and somatic loss of the normal SDHB allele (second hit) provides a means by which the SDHAF3 c.157 T > C allele could act. ('tumor', 'Disease', 'MESH:D009369', (97, 102)) ('tumor', 'Disease', (28, 33)) ('SDHAF3', 'Gene', '57001', (246, 252)) ('SDHB', 'Gene', (191, 195)) ('loss', 'Var', (172, 176)) ('SDHB', 'Gene', '6390', (12, 16)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('SDHB', 'Gene', (12, 16)) ('c.157 T > C', 'Mutation', 'rs62624461', (253, 264)) ('tumor', 'Disease', (97, 102)) ('SDHAF3', 'Gene', (246, 252)) ('SDHB', 'Gene', '6390', (134, 138)) ('tumor', 'Disease', 'MESH:D009369', (28, 33)) ('SDHB', 'Gene', (134, 138)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) ('SDHB', 'Gene', '6390', (191, 195)) ('c.157 T > C', 'Var', (253, 264)) 50227 28738844 To further understand the role of SDHAF3, and the impact of p.Phe53Leu in greater detail, we assessed its ability to interact with SDHB. ('SDHB', 'Gene', '6390', (131, 135)) ('interact', 'Interaction', (117, 125)) ('SDHAF3', 'Gene', '57001', (34, 40)) ('SDHB', 'Gene', (131, 135)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (60, 70)) ('p.Phe53Leu', 'Var', (60, 70)) ('SDHAF3', 'Gene', (34, 40)) 50230 28738844 We wanted to assess SDHAF3-SDHB interaction further by introducing clinically relevant SDHB mutations. ('SDHAF3', 'Gene', '57001', (20, 26)) ('SDHB', 'Gene', '6390', (87, 91)) ('mutations', 'Var', (92, 101)) ('SDHB', 'Gene', '6390', (27, 31)) ('SDHAF3', 'Gene', (20, 26)) ('SDHB', 'Gene', (27, 31)) ('SDHB', 'Gene', (87, 91)) 50231 28738844 Interaction between wild-type SDHAF3 and SDHB p.Arg242His mutant was not observed, implicating this region of SDHB as a direct binding site for SDHAF3. ('SDHB', 'Gene', (110, 114)) ('binding', 'Interaction', (127, 134)) ('p.Arg242His', 'Var', (46, 57)) ('SDHAF3', 'Gene', '57001', (144, 150)) ('SDHAF3', 'Gene', '57001', (30, 36)) ('p.Arg242His', 'Mutation', 'rs74315368', (46, 57)) ('SDHB', 'Gene', '6390', (41, 45)) ('SDHAF3', 'Gene', (30, 36)) ('SDHB', 'Gene', '6390', (110, 114)) ('SDHAF3', 'Gene', (144, 150)) ('SDHB', 'Gene', (41, 45)) 50232 28738844 (2015) recently demonstrated that SDHAF1 interacts with SDHB with contacts between SDHB residues 146-153, 183-185 and 198-202. ('SDHB', 'Gene', '6390', (56, 60)) ('SDHB', 'Gene', (83, 87)) ('SDHB', 'Gene', (56, 60)) ('residues 146-153', 'Var', (88, 104)) ('SDHAF1', 'Gene', '644096', (34, 40)) ('contacts', 'Interaction', (66, 74)) ('SDHAF1', 'Gene', (34, 40)) ('SDHB', 'Gene', '6390', (83, 87)) ('interacts', 'Interaction', (41, 50)) 50235 28738844 Our study shows that SDHAF3, in fact, is a direct binding partner for the LYR motif of SDHB (p.240-242). ('SDHAF3', 'Gene', '57001', (21, 27)) ('p.240-242', 'Var', (93, 102)) ('binding', 'Interaction', (50, 57)) ('SDHB', 'Gene', '6390', (87, 91)) ('SDHB', 'Gene', (87, 91)) ('SDHAF3', 'Gene', (21, 27)) 50237 28738844 On introduction of the SDHAF3 p.Phe53Leu variant, SDHAF3-SDHB interaction was completely lost for SDHB p.Arg46Gln and p.Arg46Gly mutants, implicating residue 46 (contained within an IYR binding site [p.44-46]) as another region of SDHB that may interact with SDHAF3. ('SDHAF3', 'Gene', '57001', (50, 56)) ('interaction', 'Interaction', (62, 73)) ('lost', 'NegReg', (89, 93)) ('SDHB', 'Gene', (231, 235)) ('SDHAF3', 'Gene', (50, 56)) ('SDHB', 'Gene', (57, 61)) ('p.Phe53Leu', 'Var', (30, 40)) ('p.Arg46Gln', 'Mutation', 'rs772551056', (103, 113)) ('SDHAF3', 'Gene', '57001', (259, 265)) ('SDHAF3', 'Gene', '57001', (23, 29)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (30, 40)) ('SDHAF3', 'Gene', (259, 265)) ('p.Arg46Gly', 'Mutation', 'rs74315370', (118, 128)) ('SDHB', 'Gene', '6390', (98, 102)) ('p.Arg46Gly', 'Var', (118, 128)) ('SDHAF3', 'Gene', (23, 29)) ('p.Arg46Gln', 'Var', (103, 113)) ('SDHB', 'Gene', '6390', (231, 235)) ('SDHB', 'Gene', '6390', (57, 61)) ('SDHB', 'Gene', (98, 102)) 50239 28738844 Alternatively, the impaired binding may arise from secondary consequences of the p.Arg46 mutation. ('p.Arg46', 'Var', (81, 88)) ('impaired', 'NegReg', (19, 27)) ('binding', 'Interaction', (28, 35)) ('Arg46', 'Chemical', '-', (83, 88)) 50240 28738844 Interestingly, our previous structural modeling of these SDHB mutations had not identified the functional impact on SDHB, as both glycine and glutamine are capable of fitting within the space left by arginine, and the electron path is not nearby. ('glutamine', 'Chemical', 'MESH:D005973', (142, 151)) ('SDHB', 'Gene', '6390', (57, 61)) ('SDHB', 'Gene', '6390', (116, 120)) ('SDHB', 'Gene', (57, 61)) ('SDHB', 'Gene', (116, 120)) ('glycine', 'Chemical', 'MESH:D005998', (130, 137)) ('arginine', 'Chemical', 'MESH:D001120', (200, 208)) ('mutations', 'Var', (62, 71)) 50241 28738844 The findings of our current study suggest that mutations affecting residue 46 of SDHB are pathogenic via preventing maturation of SDHB. ('SDHB', 'Gene', '6390', (130, 134)) ('SDHB', 'Gene', '6390', (81, 85)) ('maturation', 'MPA', (116, 126)) ('preventing', 'NegReg', (105, 115)) ('SDHB', 'Gene', (130, 134)) ('SDHB', 'Gene', (81, 85)) ('mutations affecting residue 46', 'Var', (47, 77)) 50242 28738844 (2014), whereby the SDHB p.Arg46Gln mutation did not impair SDHB interaction with HSC20, although reduced binding to the HSC20 complex and SDHA were noted, suggestive of an effect on formation of a mature SDH complex. ('SDH', 'Gene', (60, 63)) ('SDHA', 'Gene', '6389', (139, 143)) ('SDH', 'Gene', (20, 23)) ('HSC20', 'Gene', (82, 87)) ('reduced', 'NegReg', (98, 105)) ('SDH', 'Gene', (139, 142)) ('HSC20', 'Gene', (121, 126)) ('SDHB', 'Gene', '6390', (60, 64)) ('p.Arg46Gln', 'Mutation', 'rs772551056', (25, 35)) ('SDH', 'Gene', '6390', (205, 208)) ('SDHB', 'Gene', '6390', (20, 24)) ('binding', 'Interaction', (106, 113)) ('SDHB', 'Gene', (60, 64)) ('SDH', 'Gene', '6390', (60, 63)) ('SDH', 'Gene', (205, 208)) ('SDHB', 'Gene', (20, 24)) ('SDH', 'Gene', '6390', (20, 23)) ('p.Arg46Gln', 'Var', (25, 35)) ('interaction', 'Interaction', (65, 76)) ('HSC20', 'Gene', '150274', (82, 87)) ('SDH', 'Gene', '6390', (139, 142)) ('SDHA', 'Gene', (139, 143)) ('HSC20', 'Gene', '150274', (121, 126)) 50243 28738844 Interestingly, introduction of the SDHAF3 p.Phe53Leu variant resulted in a stronger SDHAF3-SDHB interaction in the presence of the SDHB p.Cys101Tyr mutant. ('SDHB', 'Gene', '6390', (131, 135)) ('SDHAF3', 'Gene', (35, 41)) ('stronger', 'PosReg', (75, 83)) ('SDHAF3', 'Gene', (84, 90)) ('SDHB', 'Gene', (131, 135)) ('interaction', 'Interaction', (96, 107)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (42, 52)) ('p.Cys101Tyr', 'Mutation', 'rs74315371', (136, 147)) ('SDHB', 'Gene', '6390', (91, 95)) ('SDHAF3', 'Gene', '57001', (35, 41)) ('SDHB', 'Gene', (91, 95)) ('p.Phe53Leu', 'Var', (42, 52)) ('p.Cys101Tyr', 'Var', (136, 147)) ('SDHAF3', 'Gene', '57001', (84, 90)) 50244 28738844 Since Cys101 is a ligand to the 2Fe-2S center in the N-terminal domain of SDHB, the enhanced interaction is suggestive that SDHAF3 interacts with apo-SDHB. ('SDHAF3', 'Gene', (124, 130)) ('SDHB', 'Gene', '6390', (74, 78)) ('SDHB', 'Gene', (74, 78)) ('interaction', 'Interaction', (93, 104)) ('SDHB', 'Gene', '6390', (150, 154)) ('Cys101', 'Var', (6, 12)) ('SDHB', 'Gene', (150, 154)) ('SDHAF3', 'Gene', '57001', (124, 130)) ('enhanced', 'PosReg', (84, 92)) ('Cys101', 'Chemical', '-', (6, 12)) ('interacts', 'Interaction', (131, 140)) 50248 28738844 We have shown that SDHAF3 interacts directly with SDHB (residue 242 being key to this interaction), and that a variant in SDHAF3 (c.157 T > C [p.Phe53Leu]) appears to be more prevalent in individuals with pheochromocytomas and/or paragangliomas, and is hypomorphic via impaired interaction with SDHB. ('SDHAF3', 'Gene', '57001', (19, 25)) ('paragangliomas', 'Disease', 'MESH:D010235', (230, 244)) ('paragangliomas', 'Phenotype', 'HP:0002668', (230, 244)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (205, 221)) ('paraganglioma', 'Phenotype', 'HP:0002668', (230, 243)) ('pheochromocytomas', 'Disease', (205, 222)) ('SDHAF3', 'Gene', (19, 25)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (205, 222)) ('SDHB', 'Gene', (295, 299)) ('prevalent', 'Reg', (175, 184)) ('c.157 T > C', 'Mutation', 'rs62624461', (130, 141)) ('hypomorphic via impaired', 'Disease', 'MESH:D009422', (253, 277)) ('interacts', 'Interaction', (26, 35)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (143, 153)) ('c.157 T > C', 'Var', (130, 141)) ('SDHB', 'Gene', '6390', (50, 54)) ('paragangliomas', 'Disease', (230, 244)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (205, 222)) ('SDHAF3', 'Gene', '57001', (122, 128)) ('SDHB', 'Gene', (50, 54)) ('SDHB', 'Gene', '6390', (295, 299)) ('SDHAF3', 'Gene', (122, 128)) ('hypomorphic via impaired', 'Disease', (253, 277)) 50249 28738844 Further studies of larger numbers of PC/PGL will, however, be required to fully clarify the role of SDHAF3 (c.157 T > C [p.Phe53Leu]) in the pathogenesis of PC/PGL. ('SDHAF3', 'Gene', (100, 106)) ('PC/PGL', 'Disease', (157, 163)) ('c.157 T > C', 'Var', (108, 119)) ('SDHAF3', 'Gene', '57001', (100, 106)) ('p.Phe53Leu', 'Mutation', 'rs62624461', (121, 131)) ('c.157 T > C', 'Mutation', 'rs62624461', (108, 119)) 50281 28325651 In the bladder, paraganglioma was most commonly treated with partial cystectomy (40%), followed by transurethral resection of the bladder (20%), complete cystectomy with reconstruction (13.3%), radical cystectomy plus ileal conduit (6.7%), radical cystectomy plus continent diversion (6.7%), and radical cystectomy plus orthotopic diversion (6.7%). ('paraganglioma', 'Disease', (16, 29)) ('partial', 'Var', (61, 68)) ('paraganglioma', 'Phenotype', 'HP:0002668', (16, 29)) ('paraganglioma', 'Disease', 'MESH:D010235', (16, 29)) 50298 28325651 The patients in this study were followed closely due to inherited conditions associated with mutations of genes including von Hippel-Lindau and succinate dehydrogenase. ('mutations', 'Var', (93, 102)) ('succinate dehydrogenase', 'Gene', (144, 167)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (122, 139)) ('patients', 'Species', '9606', (4, 12)) ('von Hippel-Lindau', 'Disease', (122, 139)) 50494 24466223 Integrative Genetic Characterization and Phenotype Correlations in Pheochromocytoma and Paraganglioma Tumours About 60% of Pheochromocytoma (PCC) and Paraganglioma (PGL) patients have either germline or somatic mutations in one of the 12 proposed disease causing genes; SDHA, SDHB, SDHC, SDHD, SDHAF2, VHL, EPAS1, RET, NF1, TMEM127, MAX and H-RAS. ('SDHB', 'Gene', '6390', (276, 280)) ('VHL', 'Gene', (302, 305)) ('Paraganglioma', 'Disease', 'MESH:D010235', (88, 101)) ('SDHD', 'Gene', (288, 292)) ('Pheochromocytoma', 'Disease', (67, 83)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (67, 83)) ('SDHA', 'Gene', (270, 274)) ('Pheochromocytoma and Paraganglioma Tumours', 'Disease', 'MESH:D010673', (67, 109)) ('Tumours', 'Phenotype', 'HP:0002664', (102, 109)) ('Pheochromocytoma', 'Disease', (123, 139)) ('germline', 'Var', (191, 199)) ('EPAS1', 'Gene', (307, 312)) ('SDHA', 'Gene', (294, 298)) ('TMEM127', 'Gene', (324, 331)) ('RET', 'Gene', (314, 317)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (123, 139)) ('SDHA', 'Gene', '6389', (270, 274)) ('VHL', 'Gene', '7428', (302, 305)) ('SDHB', 'Gene', (276, 280)) ('SDHC', 'Gene', (282, 286)) ('SDHA', 'Gene', '6389', (294, 298)) ('Paraganglioma', 'Disease', 'MESH:D010235', (150, 163)) ('PGL', 'Phenotype', 'HP:0002668', (165, 168)) ('Tumour', 'Phenotype', 'HP:0002664', (102, 108)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (88, 101)) ('MAX', 'Gene', (333, 336)) ('SDHAF2', 'Gene', '54949', (294, 300)) ('Paraganglioma', 'Disease', (88, 101)) ('SDHAF2', 'Gene', (294, 300)) ('patients', 'Species', '9606', (170, 178)) ('PCC', 'Phenotype', 'HP:0002666', (141, 144)) ('TMEM127', 'Gene', '55654', (324, 331)) ('NF1', 'Gene', '4763', (319, 322)) ('EPAS1', 'Gene', '2034', (307, 312)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (150, 163)) ('Paraganglioma', 'Disease', (150, 163)) ('H-RAS', 'Gene', (341, 346)) ('SDHD', 'Gene', '6392', (288, 292)) ('NF1', 'Gene', (319, 322)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (67, 83)) ('RET', 'Gene', '5979', (314, 317)) ('SDHC', 'Gene', '6391', (282, 286)) ('H-RAS', 'Gene', '3265', (341, 346)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (123, 139)) 50506 24466223 Translational studies show that approximately 60% of PCC and PGL cases have either germline or somatic mutations in one of 13 suggested disease causing loci; SDH subunits A, B, C and D, SDHAF2, VHL, EPAS1, RET, NF1, TMEM127, MAX and H-RAS . ('EPAS1', 'Gene', '2034', (199, 204)) ('MAX', 'Gene', (225, 228)) ('TMEM127', 'Gene', '55654', (216, 223)) ('RET', 'Gene', '5979', (206, 209)) ('mutations', 'Var', (103, 112)) ('NF1', 'Gene', '4763', (211, 214)) ('H-RAS', 'Gene', (233, 238)) ('PGL', 'Phenotype', 'HP:0002668', (61, 64)) ('NF1', 'Gene', (211, 214)) ('VHL', 'Gene', (194, 197)) ('EPAS1', 'Gene', (199, 204)) ('RET', 'Gene', (206, 209)) ('H-RAS', 'Gene', '3265', (233, 238)) ('SDH subunits', 'Gene', (158, 170)) ('SDHAF2', 'Gene', '54949', (186, 192)) ('PCC', 'Disease', (53, 56)) ('SDHAF2', 'Gene', (186, 192)) ('VHL', 'Gene', '7428', (194, 197)) ('PCC', 'Phenotype', 'HP:0002666', (53, 56)) ('TMEM127', 'Gene', (216, 223)) 50507 24466223 In the clinical setting, genetic screening of these genes by fragment prioritization of germline DNA is regarded as golden standard of care, and may have a substantial impact on patient management. ('patient', 'Species', '9606', (178, 185)) ('genetic', 'Var', (25, 32)) ('impact', 'Reg', (168, 174)) 50512 24466223 Selected patients were previously screened for mutations in H-RAS describing somatic genetic variants (n = 4) and MAX describing no pathogenic genetic variant. ('patients', 'Species', '9606', (9, 17)) ('H-RAS', 'Gene', '3265', (60, 65)) ('variants', 'Var', (93, 101)) ('mutations', 'Var', (47, 56)) ('H-RAS', 'Gene', (60, 65)) 50523 24466223 Using a phenotype guided fragment prioritization approach, exons and intron-exon boundaries of SDHB (NM_003000.2), SDHC (NM_003001.3), SDHD (NM_003002.2), SDHAF2 (NM_017841.2), VHL (NM_000551.3), EPAS1 (exons 9 and 12, NM_001430.4), RET (exons 10-11 and 13-16, NM_020975.4), TMEM127 (NM_017849.3), MAX (NM_002382.3) and H-RAS (exons 2 and 3, NM_176795.3) were amplified by PCR and sequenced using automated Sanger sequencing (Beckman Coulter Genomics, Takeley, UK). ('RET', 'Gene', (233, 236)) ('SDHB', 'Gene', '6390', (95, 99)) ('EPAS1', 'Gene', (196, 201)) ('SDHD', 'Gene', '6392', (135, 139)) ('NM_002382.3', 'Var', (303, 314)) ('SDHB', 'Gene', (95, 99)) ('SDHC', 'Gene', (115, 119)) ('TMEM127', 'Gene', (275, 282)) ('VHL', 'Gene', (177, 180)) ('H-RAS', 'Gene', (320, 325)) ('SDHD', 'Gene', (135, 139)) ('EPAS1', 'Gene', '2034', (196, 201)) ('H-RAS', 'Gene', '3265', (320, 325)) ('RET', 'Gene', '5979', (233, 236)) ('TMEM127', 'Gene', '55654', (275, 282)) ('VHL', 'Gene', '7428', (177, 180)) ('SDHAF2', 'Gene', '54949', (155, 161)) ('SDHAF2', 'Gene', (155, 161)) ('SDHC', 'Gene', '6391', (115, 119)) 50531 24466223 Inclusion criteria were presence of pathogenic or unknown variants in SDHB, SDHC, VHL or clinical criteria of NF1. ('NF1', 'Gene', (110, 113)) ('SDHB', 'Gene', '6390', (70, 74)) ('SDHB', 'Gene', (70, 74)) ('NF1', 'Gene', '4763', (110, 113)) ('variants', 'Var', (58, 66)) ('VHL', 'Gene', (82, 85)) ('SDHC', 'Gene', (76, 80)) ('VHL', 'Gene', '7428', (82, 85)) ('SDHC', 'Gene', '6391', (76, 80)) 50546 24466223 Re-sequencing revealed a pathogenic nonsense mutation in SDHB; c.268C>T, p.Arg90* that was present in DNA from blood. ('SDHB', 'Gene', '6390', (57, 61)) ('p.Arg90*', 'Var', (73, 81)) ('p.Arg90*', 'Mutation', 'p.R90*', (73, 81)) ('SDHB', 'Gene', (57, 61)) ('pathogenic', 'Reg', (25, 35)) ('c.268C>T', 'Mutation', 'rs74315366', (63, 71)) 50547 24466223 There were 12 cases with pathogenic mutations in the VHL gene. ('VHL', 'Gene', '7428', (53, 56)) ('VHL', 'Gene', (53, 56)) ('mutations', 'Var', (36, 45)) 50548 24466223 Patient number 9 with bilateral PCC (index case) had a pathogenic germline missense mutation in VHL; c.482G>A p.Arg161Gln. ('c.482G>A p.Arg161Gln', 'Var', (101, 121)) ('pathogenic', 'Reg', (55, 65)) ('PCC', 'Phenotype', 'HP:0002666', (32, 35)) ('p.Arg161Gln', 'Mutation', 'rs730882035', (110, 121)) ('c.482G>A', 'Mutation', 'rs730882035', (101, 109)) ('VHL', 'Gene', (96, 99)) ('VHL', 'Gene', '7428', (96, 99)) ('Patient', 'Species', '9606', (0, 7)) 50549 24466223 A family comprising of three siblings with bilateral or unilateral PCC had pathogenic germline missense mutation in VHL; c.499C>T, p.Arg167Trp. ('c.499C>T', 'Mutation', 'rs5030820', (121, 129)) ('PCC', 'Phenotype', 'HP:0002666', (67, 70)) ('pathogenic', 'Reg', (75, 85)) ('VHL', 'Gene', (116, 119)) ('VHL', 'Gene', '7428', (116, 119)) ('p.Arg167Trp', 'Mutation', 'rs5030820', (131, 142)) ('p.Arg167Trp', 'Var', (131, 142)) ('c.499C>T', 'Var', (121, 129)) 50550 24466223 Both p.Arg161Gln and p.Arg167Trp had previously been reported as pathogenic. ('pathogenic', 'Reg', (65, 75)) ('p.Arg161Gln', 'Var', (5, 16)) ('p.Arg167Trp', 'Mutation', 'rs5030820', (21, 32)) ('p.Arg167Trp', 'Var', (21, 32)) ('p.Arg161Gln', 'Mutation', 'rs730882035', (5, 16)) 50552 24466223 There were six unique SNVs; c.193T>G, p.Ser65Ala; c.193T>A, p.Ser65Thr; c.238A>G, p.Ser80Gly; c.458T>A, p.Leu153Gln; c.475A>G, p.Lys159Glu and c.551T>A, p.Leu184His in one patient each. ('p.Lys159Glu', 'Mutation', 'p.K159E', (127, 138)) ('c.458T>A', 'Var', (94, 102)) ('p.Leu153Gln; c.475A>G', 'Var', (104, 125)) ('p.Leu153Gln', 'Mutation', 'rs193922611', (104, 115)) ('c.551T>A', 'Var', (143, 151)) ('c.458T>A', 'Mutation', 'rs193922611', (94, 102)) ('c.551T>A', 'Mutation', 'rs1200051286', (143, 151)) ('p.Ser65Ala; c.193T>A', 'Var', (38, 58)) ('p.Lys159Glu', 'Var', (127, 138)) ('p.Ser65Thr', 'Mutation', 'rs786202513', (60, 70)) ('c.238A>G', 'Var', (72, 80)) ('c.193T>A', 'Var', (50, 58)) ('patient', 'Species', '9606', (172, 179)) ('c.475A>G', 'Mutation', 'rs755022508', (117, 125)) ('p.Ser65Ala', 'Mutation', 'rs869025616', (38, 48)) ('p.Leu184His', 'Var', (153, 164)) ('c.193T>G', 'Var', (28, 36)) ('p.Ser80Gly', 'Mutation', 'rs786202787', (82, 92)) ('c.193T>G', 'Mutation', 'rs869025616', (28, 36)) ('c.193T>A', 'Mutation', 'rs760678574', (50, 58)) ('c.475A>G', 'Var', (117, 125)) ('p.Leu184His', 'Mutation', 'p.L184H', (153, 164)) ('c.238A>G', 'Mutation', 'rs786202787', (72, 80)) 50553 24466223 Patient number 4 had a 30 base pair deletion c.163_192del, p.Glu55_Arg64del that was absent in DNA from peripheral blood. ('c.163_192del', 'Var', (45, 57)) ('p.Glu55_Arg64del', 'Var', (59, 75)) ('c.163_192del', 'Mutation', 'c.163_192del', (45, 57)) ('p.Glu55_Arg64del', 'DELETION', 'None', (59, 75)) ('Patient', 'Species', '9606', (0, 7)) 50554 24466223 All carriers of somatic VHL mutations had unilateral PCC, sporadic disease presentation and there were no apparent signs or symptoms of VHL syndrome. ('VHL', 'Gene', '7428', (24, 27)) ('VHL syndrome', 'Disease', 'MESH:D006623', (136, 148)) ('PCC', 'Phenotype', 'HP:0002666', (53, 56)) ('VHL', 'Gene', (136, 139)) ('VHL syndrome', 'Disease', (136, 148)) ('VHL', 'Gene', (24, 27)) ('VHL', 'Gene', '7428', (136, 139)) ('mutations', 'Var', (28, 37)) 50555 24466223 Two patients had mutations in EPAS1 which were absent in DNA from their blood; one c.1586T>C, p.Leu529Pro and one c.1589C>T, p.Ala530Val. ('EPAS1', 'Gene', '2034', (30, 35)) ('EPAS1', 'Gene', (30, 35)) ('c.1586T>C', 'Var', (83, 92)) ('p.Leu529Pro', 'Var', (94, 105)) ('p.Ala530Val', 'Mutation', 'p.A530V', (125, 136)) ('p.Ala530Val', 'Var', (125, 136)) ('c.1586T>C', 'Mutation', 'rs199474737', (83, 92)) ('c.1589C>T', 'Var', (114, 123)) ('patients', 'Species', '9606', (4, 12)) ('p.Leu529Pro', 'Mutation', 'rs199474737', (94, 105)) ('c.1589C>T', 'Mutation', 'rs1349207461', (114, 123)) 50558 24466223 There were 13 patients with pathogenic mutations in RET. ('RET', 'Gene', (52, 55)) ('RET', 'Gene', '5979', (52, 55)) ('patients', 'Species', '9606', (14, 22)) ('mutations', 'Var', (39, 48)) 50559 24466223 Eight had germline pathogenic mutations and clinical characteristics of MEN2 syndrome; c.1826G>C, p.Cys609Ser; c.1832G>A, p.Cys611Tyr; c.1900T>C, p.Cys634Arg; c.1900T>G, p.Cys634Gly; c.1901G>A, p. Cys634Tyr; c.2410G>A, p.Val804Met in one patient each and c.2753T>C, p.Met918Thr in tow different patients. ('p.Cys611Tyr', 'Mutation', 'rs377767397', (122, 133)) ('p.Cys634Gly', 'Mutation', 'rs75076352', (170, 181)) ('c.1901G>A', 'Mutation', 'rs75996173', (183, 192)) ('MEN2 syndrome', 'Disease', 'MESH:D013577', (72, 85)) ('patient', 'Species', '9606', (238, 245)) ('c.1832G>A', 'Mutation', 'rs377767397', (111, 120)) ('c.1826G>C', 'Var', (87, 96)) ('patient', 'Species', '9606', (295, 302)) ('c.1900T>C', 'Var', (135, 144)) ('MEN2 syndrome', 'Disease', (72, 85)) ('c.2753T>C', 'Var', (255, 264)) ('c.1901G>A', 'Var', (183, 192)) ('p.Cys634Arg', 'Mutation', 'rs75076352', (146, 157)) ('Cys634Tyr', 'SUBSTITUTION', 'None', (197, 206)) ('p.Met918Thr', 'Mutation', 'rs74799832', (266, 277)) ('c.1826G>C', 'Mutation', 'rs77939446', (87, 96)) ('c.2410G>A', 'Var', (208, 217)) ('c.1900T>G', 'Mutation', 'rs75076352', (159, 168)) ('c.2410G>A', 'Mutation', 'rs79658334', (208, 217)) ('p.Met918Thr', 'Var', (266, 277)) ('p.Val804Met', 'Mutation', 'rs79658334', (219, 230)) ('p.Cys609Ser', 'Mutation', 'rs77939446', (98, 109)) ('c.2753T>C', 'Mutation', 'rs74799832', (255, 264)) ('p.Val804Met', 'Var', (219, 230)) ('c.1832G>A', 'Var', (111, 120)) ('patients', 'Species', '9606', (295, 303)) ('Cys634Tyr', 'Var', (197, 206)) ('p.Cys611Tyr; c.1900T>C', 'Var', (122, 144)) ('c.1900T>C', 'Mutation', 'rs75076352', (135, 144)) 50560 24466223 Two patients with unilateral PCC and sporadic disease presentation had somatic mutation in RET; c.1900T>G, p.Cys634Gly and c.1900T>C, p.Cys634Arg. ('RET', 'Gene', (91, 94)) ('c.1900T>G', 'Mutation', 'rs75076352', (96, 105)) ('p.Cys634Gly', 'Mutation', 'rs75076352', (107, 118)) ('c.1900T>G', 'Var', (96, 105)) ('p.Cys634Arg', 'Mutation', 'rs75076352', (134, 145)) ('PCC', 'Phenotype', 'HP:0002666', (29, 32)) ('c.1900T>C', 'Mutation', 'rs75076352', (123, 132)) ('PCC', 'Disease', (29, 32)) ('RET', 'Gene', '5979', (91, 94)) ('patients', 'Species', '9606', (4, 12)) ('p.Cys634Arg', 'Var', (134, 145)) ('c.1900T>C', 'Var', (123, 132)) ('p.Cys634Gly', 'Var', (107, 118)) 50561 24466223 For three of the patients with SNVs in RET there were no constitutional DNA available; c.1891G>T, p.Asp631Tyr in one patient and c.2753T>C, p.Met918Thr in two patients. ('p.Asp631Tyr', 'Mutation', 'rs377767406', (98, 109)) ('RET', 'Gene', (39, 42)) ('c.2753T>C', 'Var', (129, 138)) ('p.Met918Thr', 'Mutation', 'rs74799832', (140, 151)) ('c.1891G>T', 'Var', (87, 96)) ('c.1891G>T', 'Mutation', 'rs377767406', (87, 96)) ('c.2753T>C', 'Mutation', 'rs74799832', (129, 138)) ('patient', 'Species', '9606', (17, 24)) ('patient', 'Species', '9606', (117, 124)) ('p.Asp631Tyr', 'Var', (98, 109)) ('patients', 'Species', '9606', (17, 25)) ('RET', 'Gene', '5979', (39, 42)) ('p.Met918Thr', 'Var', (140, 151)) ('patient', 'Species', '9606', (159, 166)) ('patients', 'Species', '9606', (159, 167)) 50563 24466223 All these RET mutations are described as pathogenic in the literature. ('RET', 'Gene', (10, 13)) ('mutations', 'Var', (14, 23)) ('RET', 'Gene', '5979', (10, 13)) 50564 24466223 Four patients had previously been described with somatic H-RAS mutations. ('mutations', 'Var', (63, 72)) ('patients', 'Species', '9606', (5, 13)) ('H-RAS', 'Gene', (57, 62)) ('H-RAS', 'Gene', '3265', (57, 62)) 50565 24466223 One additional somatic mutation in H-RAS; c.181C>A, p.Gln61Lys; was detected in a male patient that had sporadic disease presentation. ('c.181C>A', 'Var', (42, 50)) ('H-RAS', 'Gene', (35, 40)) ('patient', 'Species', '9606', (87, 94)) ('c.181C>A', 'Mutation', 'rs28933406', (42, 50)) ('p.Gln61Lys', 'Var', (52, 62)) ('H-RAS', 'Gene', '3265', (35, 40)) ('p.Gln61Lys', 'Mutation', 'rs28933406', (52, 62)) 50567 24466223 There were two VUS in SDHC; c.328C>T, Pro110Ser and c.490A>T, Met164Leu in two different patients with unilateral PCC and sporadic disease presentation. ('SDHC', 'Gene', (22, 26)) ('PCC', 'Phenotype', 'HP:0002666', (114, 117)) ('c.490A>T', 'Mutation', 'rs200375156', (52, 60)) ('SDHC', 'Gene', '6391', (22, 26)) ('c.328C>T', 'Var', (28, 36)) ('Met164Leu', 'Var', (62, 71)) ('c.490A>T', 'Var', (52, 60)) ('Pro110Ser', 'Mutation', 'rs1368606697', (38, 47)) ('Pro110Ser', 'Var', (38, 47)) ('Met164Leu', 'SUBSTITUTION', 'None', (62, 71)) ('c.328C>T', 'Mutation', 'rs1368606697', (28, 36)) ('patients', 'Species', '9606', (89, 97)) ('PCC', 'Disease', (114, 117)) 50568 24466223 Succinate dehydrogenase subunit C Met164Leu has been reported to have impact in functional models but was classified as benign in vivo. ('impact', 'Reg', (70, 76)) ('Met164Leu', 'Var', (34, 43)) ('Met164Leu', 'SUBSTITUTION', 'None', (34, 43)) 50576 24466223 Sanger sequencing revealed a single nucleotide polymorphism in VHL; c.548C>T, p.Ser183Leu. ('c.548C>T', 'Mutation', 'rs5030823', (68, 76)) ('VHL', 'Gene', '7428', (63, 66)) ('VHL', 'Gene', (63, 66)) ('c.548C>T', 'Var', (68, 76)) ('p.Ser183Leu', 'Mutation', 'rs5030823', (78, 89)) ('p.Ser183Leu', 'Var', (78, 89)) 50577 24466223 In tumour tissue, loss of heterozogosity and copy number loss was observed on the whole arm of chromosome 3p by Omni-1-quad SNP array (Illumina, CA, USA).VHL; c.548C>T, p.Ser183Leu has been classified as pathogenic in a functional model but the individual contribution of the allele to patient phenotype is not fully described. ('tumour', 'Phenotype', 'HP:0002664', (3, 9)) ('tumour', 'Disease', 'MESH:D009369', (3, 9)) ('p.Ser183Leu', 'Mutation', 'rs5030823', (169, 180)) ('VHL', 'Gene', (154, 157)) ('p.Ser183Leu', 'Var', (169, 180)) ('c.548C>T', 'Mutation', 'rs5030823', (159, 167)) ('tumour', 'Disease', (3, 9)) ('patient', 'Species', '9606', (286, 293)) ('VHL', 'Gene', '7428', (154, 157)) 50578 24466223 Codon 183 is conserved among mammalian orthologs and in silico analysis determined the variant as probably pathogenic: SIFT (0,18) and Polyphen2 (1,0). ('SIFT', 'Disease', 'None', (119, 123)) ('Polyphen2', 'Var', (135, 144)) ('mammalian', 'Species', '9606', (29, 38)) ('SIFT', 'Disease', (119, 123)) ('pathogenic', 'Reg', (107, 117)) 50580 24466223 Re-sequencing revealed a RET mutation c.2372A>T, p.Tyr791Phe that was found in constitutional DNA. ('RET', 'Gene', '5979', (25, 28)) ('p.Tyr791Phe', 'Mutation', 'rs77724903', (49, 60)) ('c.2372A>T', 'Var', (38, 47)) ('RET', 'Gene', (25, 28)) ('c.2372A>T', 'Mutation', 'rs77724903', (38, 47)) 50581 24466223 The pathogenicity of RET p.Tyr791Phe is disputed. ('p.Tyr791Phe', 'Var', (25, 36)) ('RET', 'Gene', (21, 24)) ('p.Tyr791Phe', 'Mutation', 'rs77724903', (25, 36)) ('RET', 'Gene', '5979', (21, 24)) 50582 24466223 There were no pathogenic variants discovered in SDHAF2, TMEM127 and MAX. ('SDHAF2', 'Gene', (48, 54)) ('variants', 'Var', (25, 33)) ('TMEM127', 'Gene', (56, 63)) ('SDHAF2', 'Gene', '54949', (48, 54)) ('TMEM127', 'Gene', '55654', (56, 63)) 50584 24466223 There were no LOH at coordinates corresponding to SDHC loci in tumours from patients with germline SDHC Pro110Ser and Met164Leu variants. ('tumours', 'Disease', (63, 70)) ('patients', 'Species', '9606', (76, 84)) ('SDHC', 'Gene', '6391', (99, 103)) ('tumour', 'Phenotype', 'HP:0002664', (63, 69)) ('Met164Leu', 'Var', (118, 127)) ('tumours', 'Phenotype', 'HP:0002664', (63, 70)) ('SDHC', 'Gene', (50, 54)) ('Pro110Ser', 'Var', (104, 113)) ('Met164Leu', 'SUBSTITUTION', 'None', (118, 127)) ('SDHC', 'Gene', '6391', (50, 54)) ('Pro110Ser', 'Mutation', 'rs1368606697', (104, 113)) ('tumours', 'Disease', 'MESH:D009369', (63, 70)) ('SDHC', 'Gene', (99, 103)) 50585 24466223 Patient 36 with a germline VHL p.Ser183Leu had LOH at the VHL loci. ('VHL', 'Gene', (27, 30)) ('p.Ser183Leu', 'Mutation', 'rs5030823', (31, 42)) ('p.Ser183Leu', 'Var', (31, 42)) ('VHL', 'Gene', (58, 61)) ('VHL', 'Gene', '7428', (58, 61)) ('Patient', 'Species', '9606', (0, 7)) ('VHL', 'Gene', '7428', (27, 30)) 50588 24466223 The frequency of mutifocal tumours were also different in germline carriers (53%) compared to patients with somatic carrier status (0%, P<0.001) as well as those without known mutations (2%, P<0.001). ('patients', 'Species', '9606', (94, 102)) ('tumour', 'Phenotype', 'HP:0002664', (27, 33)) ('tumours', 'Phenotype', 'HP:0002664', (27, 34)) ('tumours', 'Disease', (27, 34)) ('tumours', 'Disease', 'MESH:D009369', (27, 34)) ('germline carriers', 'Var', (58, 75)) 50590 24466223 Preoperative levels of urine norepinephrine were lower in patients with germline carrier status compared to somatic carriers and those without mutation (P = 0.049 and P = 0.033 respectively). ('norepinephrine', 'Chemical', 'MESH:D009638', (29, 43)) ('urine norepinephrine', 'Phenotype', 'HP:0003345', (23, 43)) ('lower', 'NegReg', (49, 54)) ('patients', 'Species', '9606', (58, 66)) ('germline carrier status', 'Var', (72, 95)) 50592 24466223 Stratification according to genotype into cluster 1; SDHx/VHL/EPAS1 mutants and cluster 2; RET/NF1/H-RAS mutants, resulted in a difference in age at diagnosis between cluster 2 carriers (median 45) and patients without mutations (median 53, P = 0.036). ('RET', 'Gene', (91, 94)) ('SDHx', 'Chemical', '-', (53, 57)) ('NF1', 'Gene', (95, 98)) ('H-RAS', 'Gene', '3265', (99, 104)) ('NF1', 'Gene', '4763', (95, 98)) ('patients', 'Species', '9606', (202, 210)) ('VHL', 'Gene', (58, 61)) ('EPAS1', 'Gene', (62, 67)) ('difference', 'Reg', (128, 138)) ('EPAS1', 'Gene', '2034', (62, 67)) ('H-RAS', 'Gene', (99, 104)) ('RET', 'Gene', '5979', (91, 94)) ('VHL', 'Gene', '7428', (58, 61)) ('mutants', 'Var', (68, 75)) 50600 24466223 A total of 33 patients (37%) had pathogenic variants in SDHB, VHL, EPAS1, RET and H-RAS. ('SDHB', 'Gene', '6390', (56, 60)) ('EPAS1', 'Gene', (67, 72)) ('SDHB', 'Gene', (56, 60)) ('RET', 'Gene', (74, 77)) ('H-RAS', 'Gene', '3265', (82, 87)) ('EPAS1', 'Gene', '2034', (67, 72)) ('pathogenic', 'Reg', (33, 43)) ('RET', 'Gene', '5979', (74, 77)) ('VHL', 'Gene', (62, 65)) ('H-RAS', 'Gene', (82, 87)) ('patients', 'Species', '9606', (14, 22)) ('VHL', 'Gene', '7428', (62, 65)) ('variants', 'Var', (44, 52)) 50601 24466223 Including patients with clinical criteria of Neurofibromatosis type 1 and loss of heterozygosity at the NF1 locus, 41% of the cohort could be associated with genetic aberrations in known genes. ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (45, 62)) ('loss', 'Var', (74, 78)) ('associated', 'Reg', (142, 152)) ('patients', 'Species', '9606', (10, 18)) ('genetic aberrations', 'Var', (158, 177)) ('Neurofibromatosis type 1', 'Gene', (45, 69)) ('NF1', 'Gene', '4763', (104, 107)) ('Neurofibromatosis type 1', 'Gene', '4763', (45, 69)) ('NF1', 'Gene', (104, 107)) 50604 24466223 Loss of heterozygosity could be detected in tumour DNA from 11/12 patients having somatic or germline mutations in the SDHB or VHL genes. ('tumour', 'Disease', 'MESH:D009369', (44, 50)) ('SDHB', 'Gene', '6390', (119, 123)) ('tumour', 'Disease', (44, 50)) ('VHL', 'Gene', (127, 130)) ('mutations', 'Var', (102, 111)) ('SDHB', 'Gene', (119, 123)) ('VHL', 'Gene', '7428', (127, 130)) ('tumour', 'Phenotype', 'HP:0002664', (44, 50)) ('patients', 'Species', '9606', (66, 74)) 50605 24466223 SNParray analysis of tumour DNA from patient 10 (VHL p.Arg161Gln) did not show LOH at any locus. ('p.Arg161Gln', 'Var', (53, 64)) ('patient', 'Species', '9606', (37, 44)) ('tumour', 'Phenotype', 'HP:0002664', (21, 27)) ('tumour', 'Disease', 'MESH:D009369', (21, 27)) ('p.Arg161Gln', 'Mutation', 'rs730882035', (53, 64)) ('VHL', 'Gene', (49, 52)) ('tumour', 'Disease', (21, 27)) ('VHL', 'Gene', '7428', (49, 52)) 50609 24466223 This strongly suggest that these patients do have a germline mutation in NF1 . ('NF1', 'Gene', '4763', (73, 76)) ('germline mutation', 'Var', (52, 69)) ('patients', 'Species', '9606', (33, 41)) ('NF1', 'Gene', (73, 76)) 50611 24466223 For SDHC Pro110Ser and Met164Leu, clinical presentation and family history did not indicate familial paraganglioma type 3. ('familial paraganglioma type', 'Disease', 'MESH:D010235', (92, 119)) ('Pro110Ser', 'Mutation', 'rs1368606697', (9, 18)) ('SDHC', 'Gene', (4, 8)) ('familial paraganglioma type', 'Disease', (92, 119)) ('SDHC', 'Gene', '6391', (4, 8)) ('paraganglioma', 'Phenotype', 'HP:0002668', (101, 114)) ('Met164Leu', 'Var', (23, 32)) ('Pro110Ser', 'Var', (9, 18)) ('Met164Leu', 'SUBSTITUTION', 'None', (23, 32)) 50612 24466223 Analysis of the biochemical phenotype revealed a high norepinephrine to epinephrine ratio, pointing to a disease causing mutation in the SDHx or VHL loci. ('epinephrine', 'Chemical', 'MESH:D004837', (57, 68)) ('VHL', 'Gene', '7428', (145, 148)) ('SDHx', 'Gene', (137, 141)) ('disease causing', 'Reg', (105, 120)) ('norepinephrine', 'Chemical', 'MESH:D009638', (54, 68)) ('SDHx', 'Chemical', '-', (137, 141)) ('mutation', 'Var', (121, 129)) ('epinephrine', 'Chemical', 'MESH:D004837', (72, 83)) ('VHL', 'Gene', (145, 148)) ('high', 'PosReg', (49, 53)) ('high norepinephrine', 'Phenotype', 'HP:0003345', (49, 68)) ('norepinephrine to epinephrine ratio', 'MPA', (54, 89)) 50613 24466223 Available literature did not support neither classification of pathogenic nor benign status of SDHC Pro110Ser and Met164Leu. ('SDHC', 'Gene', (95, 99)) ('SDHC', 'Gene', '6391', (95, 99)) ('Met164Leu', 'Var', (114, 123)) ('Pro110Ser', 'Mutation', 'rs1368606697', (100, 109)) ('Pro110Ser', 'Var', (100, 109)) ('Met164Leu', 'SUBSTITUTION', 'None', (114, 123)) 50614 24466223 In patient 37 with the germline VHL p.Ser183Leu variant there was no family history suggesting VHL syndrome. ('VHL', 'Gene', (32, 35)) ('VHL', 'Gene', (95, 98)) ('VHL', 'Gene', '7428', (32, 35)) ('patient', 'Species', '9606', (3, 10)) ('VHL', 'Gene', '7428', (95, 98)) ('VHL syndrome', 'Disease', (95, 107)) ('p.Ser183Leu', 'Mutation', 'rs5030823', (36, 47)) ('VHL syndrome', 'Disease', 'MESH:D006623', (95, 107)) ('p.Ser183Leu', 'Var', (36, 47)) 50616 24466223 The ratio of norepinephrine to epinephrine was high indicating a mutation in SDHx or VHL genes. ('ratio', 'MPA', (4, 9)) ('SDHx', 'Chemical', '-', (77, 81)) ('VHL', 'Gene', (85, 88)) ('SDHx', 'Gene', (77, 81)) ('norepinephrine', 'Chemical', 'MESH:D009638', (13, 27)) ('epinephrine', 'Chemical', 'MESH:D004837', (31, 42)) ('mutation', 'Var', (65, 73)) ('VHL', 'Gene', '7428', (85, 88)) ('epinephrine', 'Chemical', 'MESH:D004837', (16, 27)) 50618 24466223 However, several indicators point out this variant as potentially pathogenic and as most variants in the VHL gene are pathogenic, this variant should influence the clinical management of the proband. ('VHL', 'Gene', (105, 108)) ('variants', 'Var', (89, 97)) ('influence', 'Reg', (150, 159)) ('pathogenic', 'Reg', (118, 128)) ('VHL', 'Gene', '7428', (105, 108)) ('variant', 'Var', (43, 50)) ('pathogenic', 'Reg', (66, 76)) 50619 24466223 The molecular phenotype of EPAS1 mutated tumours has been disputed. ('tumour', 'Phenotype', 'HP:0002664', (41, 47)) ('EPAS1', 'Gene', '2034', (27, 32)) ('tumours', 'Phenotype', 'HP:0002664', (41, 48)) ('mutated', 'Var', (33, 40)) ('EPAS1', 'Gene', (27, 32)) ('tumours', 'Disease', 'MESH:D009369', (41, 48)) ('tumours', 'Disease', (41, 48)) 50621 24466223 Catecholamine production detected in EPAS1 carriers in this study suggested cluster 1 differentiation. ('Catecholamine', 'Chemical', 'MESH:D002395', (0, 13)) ('carriers', 'Var', (43, 51)) ('EPAS1', 'Gene', '2034', (37, 42)) ('Catecholamine production', 'MPA', (0, 24)) ('EPAS1', 'Gene', (37, 42)) 50623 24466223 Additionally, the catecholamine output observed in H-RAS mutated tumours resemble that of RET and NF1 . ('H-RAS', 'Gene', '3265', (51, 56)) ('H-RAS', 'Gene', (51, 56)) ('RET', 'Gene', '5979', (90, 93)) ('catecholamine', 'Chemical', 'MESH:D002395', (18, 31)) ('tumour', 'Phenotype', 'HP:0002664', (65, 71)) ('NF1', 'Gene', (98, 101)) ('tumours', 'Phenotype', 'HP:0002664', (65, 72)) ('tumours', 'Disease', 'MESH:D009369', (65, 72)) ('NF1', 'Gene', '4763', (98, 101)) ('RET', 'Gene', (90, 93)) ('catecholamine output', 'MPA', (18, 38)) ('mutated', 'Var', (57, 64)) ('tumours', 'Disease', (65, 72)) 50625 24466223 As previously described, germline carriers were significantly younger at time of diagnosis, and had a higher frequency of multifocal disease. ('multifocal disease', 'Disease', 'None', (122, 140)) ('multifocal disease', 'Disease', (122, 140)) ('germline carriers', 'Var', (25, 42)) 50627 24466223 Five of 13 patients with recurrent disease were carriers of germline mutations in SDHB or RET, the remaining eight patients had sporadic disease presentation. ('patients', 'Species', '9606', (115, 123)) ('SDHB', 'Gene', '6390', (82, 86)) ('RET', 'Gene', '5979', (90, 93)) ('germline mutations', 'Var', (60, 78)) ('SDHB', 'Gene', (82, 86)) ('RET', 'Gene', (90, 93)) ('patients', 'Species', '9606', (11, 19)) 50630 24466223 There is a growing rationale for analysing somatic events in PCC and PGL tumours as a diagnostic test: (1) EPAS1 mutations may occur early in embryogenesis and these mosaic carriers are not found by analysis of DNA in peripheral blood; (2) Translational studies have suggested using genotype as predictive markers for sensitivity to targeted therapy; SDHx/VHL mutations might benefit from antiangiogenic treatment whereas RET/NF1/TMEM127/MAX driven tumours could benefit from inhibitions of kinase pathways. ('tumours', 'Phenotype', 'HP:0002664', (449, 456)) ('tumours', 'Disease', 'MESH:D009369', (449, 456)) ('VHL', 'Gene', (356, 359)) ('EPAS1', 'Gene', (107, 112)) ('TMEM127', 'Gene', '55654', (430, 437)) ('NF1', 'Gene', '4763', (426, 429)) ('tumour', 'Phenotype', 'HP:0002664', (449, 455)) ('tumours', 'Disease', (73, 80)) ('RET', 'Gene', (422, 425)) ('PGL', 'Phenotype', 'HP:0002668', (69, 72)) ('NF1', 'Gene', (426, 429)) ('VHL', 'Gene', '7428', (356, 359)) ('tumours', 'Phenotype', 'HP:0002664', (73, 80)) ('tumours', 'Disease', 'MESH:D009369', (73, 80)) ('EPAS1', 'Gene', '2034', (107, 112)) ('tumour', 'Phenotype', 'HP:0002664', (73, 79)) ('kinase pathways', 'Pathway', (491, 506)) ('PGL tumours', 'Disease', 'MESH:D010235', (69, 80)) ('SDHx', 'Chemical', '-', (351, 355)) ('mutations', 'Var', (360, 369)) ('PGL tumours', 'Disease', (69, 80)) ('tumours', 'Disease', (449, 456)) ('PCC', 'Phenotype', 'HP:0002666', (61, 64)) ('RET', 'Gene', '5979', (422, 425)) ('TMEM127', 'Gene', (430, 437)) 50669 23424694 Genetic mutation within the succinate dehydrogenase B unit (SDHB) and succinate dehydrogenase D unit (SDHD) are associated with increased risk for extra-adrenal paragangliomas. ('Genetic mutation', 'Var', (0, 16)) ('paraganglioma', 'Phenotype', 'HP:0002668', (161, 174)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (147, 175)) ('extra-adrenal paragangliomas', 'Disease', (147, 175)) ('SDHB', 'Gene', '6390', (60, 64)) ('paragangliomas', 'Phenotype', 'HP:0002668', (161, 175)) ('SDHB', 'Gene', (60, 64)) ('SDHD', 'Gene', (102, 106)) ('SDHD', 'Gene', '6392', (102, 106)) ('associated', 'Reg', (112, 122)) 50670 23424694 It has also been reported that incidence and prevalence of malignant paragangliomas are higher in patients with SDHB mutation. ('higher', 'PosReg', (88, 94)) ('malignant paragangliomas', 'Disease', (59, 83)) ('paraganglioma', 'Phenotype', 'HP:0002668', (69, 82)) ('patients', 'Species', '9606', (98, 106)) ('SDHB', 'Gene', '6390', (112, 116)) ('SDHB', 'Gene', (112, 116)) ('paragangliomas', 'Phenotype', 'HP:0002668', (69, 83)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (59, 83)) ('mutation', 'Var', (117, 125)) 50755 33795528 High expression CCL18 was tightly related to poor prognosis in various tumor, including ovarian cancer, pancreatic ductal adenocarcinoma gallbladder carcinoma and gastric cancer etc. ('gastric cancer', 'Phenotype', 'HP:0012126', (163, 177)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('CCL18', 'Gene', (16, 21)) ('pancreatic ductal adenocarcinoma', 'Phenotype', 'HP:0006725', (104, 136)) ('ovarian cancer', 'Disease', 'MESH:D010051', (88, 102)) ('High expression', 'Var', (0, 15)) ('cancer', 'Phenotype', 'HP:0002664', (96, 102)) ('CCL18', 'Gene', '6362', (16, 21)) ('carcinoma', 'Phenotype', 'HP:0030731', (127, 136)) ('gastric cancer', 'Disease', (163, 177)) ('carcinoma', 'Phenotype', 'HP:0030731', (149, 158)) ('ovarian cancer', 'Disease', (88, 102)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (88, 102)) ('related', 'Reg', (34, 41)) ('tumor', 'Disease', (71, 76)) ('cancer', 'Phenotype', 'HP:0002664', (171, 177)) ('gastric cancer', 'Disease', 'MESH:D013274', (163, 177)) ('pancreatic ductal adenocarcinoma gallbladder carcinoma', 'Disease', 'MESH:D021441', (104, 158)) ('tumor', 'Disease', 'MESH:D009369', (71, 76)) 50760 33795528 This study revealed that the high expression of CCL18 was associated with poor prognosis and might be a promising candidate gene affecting the occurrence and development of PCPG. ('high', 'Var', (29, 33)) ('expression', 'MPA', (34, 44)) ('associated', 'Reg', (58, 68)) ('PCPG', 'Chemical', '-', (173, 177)) ('PCPG', 'Disease', (173, 177)) ('CCL18', 'Gene', (48, 53)) ('CCL18', 'Gene', '6362', (48, 53)) 50805 33551992 We report, for the first time, a patient with asymptomatic primary hyperthyroidism who rapidly developed symptomatic primary hypothyroidism 1 month after 177Lu-DOTATATE therapy, accompanied by marked changes in TFTs and thyroid auto-antibody titers, with functional imaging evidence of diffuse uptake of 177Lu-DOTATATE in the thyroid gland. ('changes', 'Reg', (200, 207)) ('TFTs', 'MPA', (211, 215)) ('patient', 'Species', '9606', (33, 40)) ('hyperthyroidism', 'Phenotype', 'HP:0000836', (67, 82)) ('hypothyroidism', 'Disease', (125, 139)) ('primary hypothyroidism', 'Phenotype', 'HP:0000832', (117, 139)) ('hypothyroidism', 'Phenotype', 'HP:0000821', (125, 139)) ('primary hyperthyroidism', 'Disease', (59, 82)) ('177Lu-DOTATATE', 'Var', (154, 168)) ('primary hyperthyroidism', 'Disease', 'MESH:D006980', (59, 82)) ('177Lu-DOTATATE', 'Chemical', '-', (304, 318)) ('177Lu-DOTATATE', 'Chemical', '-', (154, 168)) ('hypothyroidism', 'Disease', 'MESH:D007037', (125, 139)) ('primary hyperthyroidism', 'Phenotype', 'HP:0000832', (59, 82)) 50817 33551992 177Lu-DOTATATE therapy has also been associated with the disruption of endocrine function, although these effects are extremely rare and is often transient. ('177Lu-DOTATATE', 'Chemical', '-', (0, 14)) ('associated', 'Reg', (37, 47)) ('disruption of endocrine function', 'MPA', (57, 89)) ('177Lu-DOTATATE', 'Var', (0, 14)) 50820 33551992 A 29-year-old male with metastatic paraganglioma with succinate dehydrogenase subunit B (SDHB) germline pathogenic variant was enrolled in the 177Lu-DOTATATE trial (ClinicalTrials.gov identifier: NCT03206060) for the treatment of inoperable, metastatic PPGL at our center. ('variant', 'Var', (115, 122)) ('paraganglioma', 'Disease', 'MESH:D010235', (35, 48)) ('PPGL', 'Chemical', '-', (253, 257)) ('paraganglioma', 'Disease', (35, 48)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (54, 87)) ('SDHB', 'Gene', '6390', (89, 93)) ('metastatic', 'Disease', (24, 34)) ('paraganglioma', 'Phenotype', 'HP:0002668', (35, 48)) ('177Lu-DOTATATE', 'Chemical', '-', (143, 157)) ('succinate dehydrogenase subunit B', 'Gene', (54, 87)) ('SDHB', 'Gene', (89, 93)) 50849 33551992 However, the temporal association of marked changes in TFTs as well as a significant increase of anti-thyroid antibody titers associated with 177Lu-DOTATATE therapy, along with evidence of increased 177Lu-DOTATATE uptake on the SPECT imaging likely suggests a contribution of PRRT to thyroid disruption. ('changes', 'Reg', (44, 51)) ('177Lu-DOTATATE', 'Var', (142, 156)) ('177Lu-DOTATATE', 'Chemical', '-', (142, 156)) ('anti-thyroid antibody titers', 'MPA', (97, 125)) ('increase', 'PosReg', (85, 93)) ('177Lu-DOTATATE', 'Chemical', '-', (199, 213)) ('TFTs', 'MPA', (55, 59)) 50850 33551992 Moreover, development of autoimmune thyroiditis has in fact been reported following 177Lu-DOTATATE therapy. ('autoimmune thyroiditis', 'Disease', 'MESH:D013967', (25, 47)) ('thyroiditis', 'Phenotype', 'HP:0100646', (36, 47)) ('177Lu-DOTATATE', 'Var', (84, 98)) ('autoimmune thyroiditis', 'Disease', (25, 47)) ('177Lu-DOTATATE', 'Chemical', '-', (84, 98)) 50858 33551992 177Lu-DOTATATE therapy may have caused further damage to the thyroid follicles leading to increased exposure of thyroid parenchymal antigens (TPO, Tg), which in turn may have enhanced autoimmune-mediated destruction facilitating rapid progression toward overt hypothyroidism. ('autoimmune-mediated', 'CPA', (184, 203)) ('overt hypothyroidism', 'Phenotype', 'HP:0008223', (254, 274)) ('enhanced', 'PosReg', (175, 183)) ('increased', 'PosReg', (90, 99)) ('TPO', 'Gene', '7173', (142, 145)) ('hypothyroidism', 'Disease', 'MESH:D007037', (260, 274)) ('TPO', 'Gene', (142, 145)) ('hypothyroidism', 'Phenotype', 'HP:0000821', (260, 274)) ('exposure', 'MPA', (100, 108)) ('177Lu-DOTATATE', 'Var', (0, 14)) ('177Lu-DOTATATE', 'Chemical', '-', (0, 14)) ('hypothyroidism', 'Disease', (260, 274)) 50861 33551992 The exact mechanism of 177Lu-DOTATATE-associated thyroid disruption has not been elucidated. ('177Lu-DOTATATE-associated', 'Var', (23, 48)) ('177Lu-DOTATATE', 'Chemical', '-', (23, 37)) ('thyroid disruption', 'Disease', (49, 67)) 50866 33551992 68Ga-DOTATOC, a somatostatin analog that predominantly targets SSTR-2 and SSTR-5 has demonstrated increased uptake in five of eight cases of Hashimoto's thyroiditis. ("Hashimoto's thyroiditis", 'Disease', (141, 164)) ('uptake', 'MPA', (108, 114)) ('SSTR-5', 'Gene', '6755', (74, 80)) ("Hashimoto's thyroiditis", 'Disease', 'MESH:D050031', (141, 164)) ('SSTR-5', 'Gene', (74, 80)) ('68Ga-DOTATOC', 'Var', (0, 12)) ('increased', 'PosReg', (98, 107)) ('SSTR-2', 'Gene', (63, 69)) ("Hashimoto's thyroiditis", 'Phenotype', 'HP:0000872', (141, 164)) ('SSTR-2', 'Gene', '6752', (63, 69)) ('thyroiditis', 'Phenotype', 'HP:0100646', (153, 164)) 50878 33551992 Apart from pituitary-thyroid axis, endocrine disruption associated with 177Lu-DOTATATE therapy has also been noted to affect pituitary-adrenal and pituitary-gonadal axes, albeit most of these effects are transient. ('endocrine disruption', 'MPA', (35, 55)) ('177Lu-DOTATATE', 'Chemical', '-', (72, 86)) ('affect', 'Reg', (118, 124)) ('pituitary-adrenal', 'MPA', (125, 142)) ('177Lu-DOTATATE', 'Var', (72, 86)) ('pituitary-gonadal', 'CPA', (147, 164)) 50880 33551992 In conclusion, 177Lu-DOTATATE therapy can be associated with transient or permanent disruption of thyroid function. ('disruption of thyroid function', 'Phenotype', 'HP:0002926', (84, 114)) ('177Lu-DOTATATE', 'Chemical', '-', (15, 29)) ('177Lu-DOTATATE', 'Var', (15, 29)) ('thyroid function', 'Disease', (98, 114)) 50897 33128872 Consequently, catecholamine excess states such as PPGL can cause substantial dysregulation of physiological systems, and lead to pronounced changes in pulmonary (vasoplegia), coronary (myocardial infarction), cerebrovascular (stroke), and remaining systemic vascular tone (hypertension), as well as myocardial disease (cardiomyopathies), tachyarrhythmias (benign and fatal), hypercoagulability (thromboembolism), immune dysregulation (cytokine storm), and diabetogenic states; these outcomes are the same as the risk factors that lead to adverse outcomes from COVID-19. ('myocardial infarction', 'Disease', (185, 206)) ('stroke', 'Phenotype', 'HP:0001297', (226, 232)) ('PPGL', 'Chemical', '-', (50, 54)) ('PPGL', 'Var', (50, 54)) ('catecholamine', 'Chemical', 'MESH:D002395', (14, 27)) ('vasoplegia', 'Disease', 'MESH:D056987', (162, 172)) ('arrhythmias', 'Phenotype', 'HP:0011675', (343, 354)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (185, 206)) ('stroke', 'Disease', 'MESH:D020521', (226, 232)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (14, 34)) ('thromboembolism', 'Disease', 'MESH:D013923', (395, 410)) ('hypertension', 'Disease', 'MESH:D006973', (273, 285)) ('myocardial infarction', 'Disease', 'MESH:D009203', (185, 206)) ('thromboembolism', 'Phenotype', 'HP:0001907', (395, 410)) ('hypertension', 'Disease', (273, 285)) ('stroke', 'Disease', (226, 232)) ('hypercoagulability', 'Disease', 'MESH:D019851', (375, 393)) ('cardiomyopathies', 'Phenotype', 'HP:0001638', (319, 335)) ('tachyarrhythmias', 'Disease', 'MESH:D013610', (338, 354)) ('hypercoagulability', 'Disease', (375, 393)) ('hypertension', 'Phenotype', 'HP:0000822', (273, 285)) ('hypercoagulability', 'Phenotype', 'HP:0100724', (375, 393)) ('changes', 'Reg', (140, 147)) ('myocardial disease', 'Disease', 'MESH:D009202', (299, 317)) ('vasoplegia', 'Disease', (162, 172)) ('cardiomyopathies', 'Disease', 'MESH:D009202', (319, 335)) ('tachyarrhythmias', 'Disease', (338, 354)) ('thromboembolism', 'Disease', (395, 410)) ('myocardial disease', 'Disease', (299, 317)) ('cardiomyopathies', 'Disease', (319, 335)) ('COVID-19', 'Disease', 'MESH:C000657245', (560, 568)) ('immune dysregulation', 'Phenotype', 'HP:0002958', (413, 433)) ('COVID-19', 'Disease', (560, 568)) 50901 33128872 Further, these systems or axes are interconnected; eg, catecholamines can lead to the release of cytokines and vice versa. ('release of cytokines', 'MPA', (86, 106)) ('catecholamines', 'Chemical', 'MESH:D002395', (55, 69)) ('catecholamines', 'Var', (55, 69)) ('lead to', 'Reg', (74, 81)) 50904 33128872 Furthermore, such patients with coexisting PPGL and COVID-19 would require appropriate and early intervention to avoid catastrophic outcomes such as stroke, myocardial infarction, circulatory collapse, and death from superimposed risk (figure ). ('myocardial infarction', 'Disease', (157, 178)) ('circulatory', 'Disease', (180, 191)) ('COVID-19', 'Disease', (52, 60)) ('stroke', 'Disease', 'MESH:D020521', (149, 155)) ('coexisting', 'Var', (32, 42)) ('PPGL', 'Gene', (43, 47)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (157, 178)) ('PPGL', 'Chemical', '-', (43, 47)) ('stroke', 'Phenotype', 'HP:0001297', (149, 155)) ('death', 'Disease', 'MESH:D003643', (206, 211)) ('death', 'Disease', (206, 211)) ('patients', 'Species', '9606', (18, 26)) ('COVID-19', 'Disease', 'MESH:C000657245', (52, 60)) ('stroke', 'Disease', (149, 155)) ('myocardial infarction', 'Disease', 'MESH:D009203', (157, 178)) 50916 33128872 In general, catecholamines seem to inhibit the T-helper type 1 cell-mediated cytokine response (including IL-1, IL-2, IL-12, interferon-gamma, and TNFalpha), and augment the T-helper type 2 cell-mediated cytokine response (including IL-6 and IL-10; key players in cytokine storm syndrome or multisystem inflammatory syndrome in children). ('IL-1', 'Gene', '3552', (118, 122)) ('children', 'Species', '9606', (328, 336)) ('augment', 'NegReg', (162, 169)) ('interferon-gamma', 'Gene', (125, 141)) ('catecholamines', 'Chemical', 'MESH:D002395', (12, 26)) ('TNFalpha', 'Gene', '7124', (147, 155)) ('T-helper type 1', 'MPA', (47, 62)) ('multisystem inflammatory syndrome', 'Disease', 'MESH:D056587', (291, 324)) ('IL-1', 'Gene', (118, 122)) ('IL-1', 'Gene', '3552', (242, 246)) ('multisystem inflammatory syndrome', 'Disease', (291, 324)) ('catecholamines', 'Var', (12, 26)) ('interferon-gamma', 'Gene', '3458', (125, 141)) ('IL-1', 'Gene', '3552', (106, 110)) ('IL-2', 'Gene', (112, 116)) ('IL-6', 'Gene', '3569', (233, 237)) ('cytokine', 'Disease', (264, 272)) ('IL-1', 'Gene', (242, 246)) ('IL-6', 'Gene', (233, 237)) ('IL-10', 'Gene', '3586', (242, 247)) ('inhibit', 'NegReg', (35, 42)) ('T-helper type 2 cell-mediated cytokine response', 'MPA', (174, 221)) ('TNFalpha', 'Gene', (147, 155)) ('IL-1', 'Gene', (106, 110)) ('IL-10', 'Gene', (242, 247)) ('IL-2', 'Gene', '3558', (112, 116)) 50922 33128872 Severe COVID-19 is also associated with a reduction in the number of natural killer cells. ('COVID-19', 'Disease', (7, 15)) ('reduction', 'NegReg', (42, 51)) ('Severe', 'Var', (0, 6)) ('COVID-19', 'Disease', 'MESH:C000657245', (7, 15)) 50937 33128872 The superimposed angiotensin II-mediated vasoconstriction and the catecholamine excess from PPGL can lead to profound cardiovascular effects through several mechanisms. ('PPGL', 'Chemical', '-', (92, 96)) ('angiotensin II', 'Gene', '183', (17, 31)) ('catecholamine', 'Chemical', 'MESH:D002395', (66, 79)) ('PPGL', 'Var', (92, 96)) ('catecholamine excess', 'MPA', (66, 86)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (66, 86)) ('angiotensin II', 'Gene', (17, 31)) ('cardiovascular effects', 'MPA', (118, 140)) ('lead to', 'Reg', (101, 108)) 50949 33128872 Conversely, we believe that catecholamines might predispose to or precipitate life-threatening decompensations, especially in the setting of COVID-19. ('catecholamines', 'Var', (28, 42)) ('precipitate', 'Reg', (66, 77)) ('COVID-19', 'Disease', (141, 149)) ('predispose', 'Reg', (49, 59)) ('catecholamines', 'Chemical', 'MESH:D002395', (28, 42)) ('COVID-19', 'Disease', 'MESH:C000657245', (141, 149)) 50950 33128872 Up to 71% of patients with PPGL die of cardiovascular causes, with 19 3% experiencing acute, sometimes fatal, cardiovascular complications. ('cardiovascular complications', 'Phenotype', 'HP:0001626', (110, 138)) ('cardiovascular complications', 'Disease', 'MESH:D002318', (110, 138)) ('cardiovascular complications', 'Disease', (110, 138)) ('patients', 'Species', '9606', (13, 21)) ('cardiovascular', 'Disease', (39, 53)) ('PPGL', 'Chemical', '-', (27, 31)) ('PPGL', 'Var', (27, 31)) 50964 33128872 Catecholamine excess can also cause beta2-adrenoceptor-mediated vaso-dilation, which can reverse the compensatory hypoxic vasoconstriction in the vasculature that surrounds poorly ventilated alveoli. ('Catecholamine', 'Chemical', 'MESH:D002395', (0, 13)) ('beta2-adrenoceptor', 'Gene', (36, 54)) ('Catecholamine excess', 'Phenotype', 'HP:0003334', (0, 20)) ('beta2-adrenoceptor', 'Gene', '154', (36, 54)) ('Catecholamine', 'Var', (0, 13)) 50965 33128872 These effects might cause a mismatch between ventilation and perfusion, leading to intrapulmonary shunting that could potentially worsen the already present hypoxaemia in patients with COVID-19. ('leading to', 'Reg', (72, 82)) ('cause', 'Reg', (20, 25)) ('intrapulmonary shunting', 'MPA', (83, 106)) ('COVID-19', 'Disease', 'MESH:C000657245', (185, 193)) ('patients', 'Species', '9606', (171, 179)) ('hypoxaemia', 'Disease', 'None', (157, 167)) ('effects', 'Var', (6, 13)) ('mismatch', 'MPA', (28, 36)) ('hypoxaemia', 'Disease', (157, 167)) ('intrapulmonary shunting', 'Phenotype', 'HP:0031225', (83, 106)) ('COVID-19', 'Disease', (185, 193)) 50971 33128872 51-75% of patients with PPGL have fasting hyperglycaemia as a result of beta-cell alpha2-adrenoceptor-mediated inhibition of insulin secretion. ('beta-cell alpha2-adrenoceptor-mediated', 'Protein', (72, 110)) ('insulin', 'Gene', '3630', (125, 132)) ('hyperglycaemia', 'Disease', 'None', (42, 56)) ('fasting hyperglycaemia', 'Phenotype', 'HP:0003162', (34, 56)) ('PPGL', 'Chemical', '-', (24, 28)) ('hyperglycaemia', 'Disease', (42, 56)) ('patients', 'Species', '9606', (10, 18)) ('PPGL', 'Var', (24, 28)) ('insulin', 'Gene', (125, 132)) 50981 33128872 These risk factors include hypertension, diabetes, and cardiovascular disease; and in patients with PPGL, there is a potential for the additional burden of malignancy, which in itself was shown to be an important risk factor for COVID-19-related death even after multivariate analysis. ('COVID-19', 'Disease', 'MESH:C000657245', (229, 237)) ('death', 'Disease', 'MESH:D003643', (246, 251)) ('hypertension', 'Disease', 'MESH:D006973', (27, 39)) ('death', 'Disease', (246, 251)) ('cardiovascular disease', 'Disease', (55, 77)) ('diabetes', 'Disease', 'MESH:D003920', (41, 49)) ('COVID-19', 'Disease', (229, 237)) ('malignancy', 'Disease', 'MESH:D009369', (156, 166)) ('hypertension', 'Disease', (27, 39)) ('cardiovascular disease', 'Phenotype', 'HP:0001626', (55, 77)) ('hypertension', 'Phenotype', 'HP:0000822', (27, 39)) ('malignancy', 'Disease', (156, 166)) ('PPGL', 'Chemical', '-', (100, 104)) ('cardiovascular disease', 'Disease', 'MESH:D002318', (55, 77)) ('PPGL', 'Var', (100, 104)) ('diabetes', 'Disease', (41, 49)) ('patients', 'Species', '9606', (86, 94)) 50983 33128872 Interfering with the influence of catecholamines on the pulmonary and cardiovascular system (table) in such a balanced compensatory state might lead to cardiovascular and respiratory failure. ('respiratory failure', 'Phenotype', 'HP:0002878', (171, 190)) ('Interfering', 'Var', (0, 11)) ('cardiovascular and respiratory failure', 'Disease', 'MESH:D012131', (152, 190)) ('catecholamines', 'Chemical', 'MESH:D002395', (34, 48)) ('lead to', 'Reg', (144, 151)) 50988 33128872 Metyrosine might offer additional benefits, as treatment will not only dampen catecholamine synthesis and action on various organs via adrenoceptors, but could also attenuate the hyperinflammatory response, cytokine storm syndrome, or multisystem inflammatory syndrome in children. ('cytokine storm syndrome', 'MPA', (207, 230)) ('attenuate', 'NegReg', (165, 174)) ('multisystem inflammatory syndrome', 'Disease', 'MESH:D056587', (235, 268)) ('children', 'Species', '9606', (272, 280)) ('hyperinflammatory response', 'Phenotype', 'HP:0012649', (179, 205)) ('dampen', 'NegReg', (71, 77)) ('action on various organs via adrenoceptors', 'MPA', (106, 148)) ('catecholamine synthesis', 'MPA', (78, 101)) ('multisystem inflammatory syndrome', 'Disease', (235, 268)) ('catecholamine', 'Chemical', 'MESH:D002395', (78, 91)) ('Metyrosine', 'Chemical', 'MESH:D019805', (0, 10)) ('Metyrosine', 'Var', (0, 10)) ('hyperinflammatory response', 'MPA', (179, 205)) 50989 33128872 In a well designed experiment by Staedtke and colleagues, inhibition of tyrosine hydroxylase with metyrosine decreased excess cytokine release in response to bacterial infections, T-cell targeting antibodies, and chimeric antigen receptor T cells in mice. ('decreased', 'NegReg', (109, 118)) ('bacterial infections', 'Disease', 'MESH:D001424', (158, 178)) ('tyrosine', 'Chemical', 'MESH:D014443', (72, 80)) ('inhibition', 'Var', (58, 68)) ('metyrosine decreased', 'Phenotype', 'HP:0500133', (98, 118)) ('bacterial infections', 'Phenotype', 'HP:0002718', (158, 178)) ('excess cytokine release', 'MPA', (119, 142)) ('metyrosine', 'Chemical', 'MESH:D019805', (98, 108)) ('bacterial infections', 'Disease', (158, 178)) ('mice', 'Species', '10090', (250, 254)) ('tyrosine', 'Chemical', 'MESH:D014443', (100, 108)) 50994 33128872 Furthermore, the use of metyrosine can be very beneficial in patients with PPGL and COVID-19 because of its well known effect on catecholamine synthesis. ('COVID-19', 'Disease', 'MESH:C000657245', (84, 92)) ('metyrosine', 'Chemical', 'MESH:D019805', (24, 34)) ('COVID-19', 'Disease', (84, 92)) ('patients', 'Species', '9606', (61, 69)) ('PPGL', 'Chemical', '-', (75, 79)) ('catecholamine synthesis', 'MPA', (129, 152)) ('PPGL', 'Gene', (75, 79)) ('catecholamine', 'Chemical', 'MESH:D002395', (129, 142)) ('metyrosine', 'Var', (24, 34)) 51012 33128872 A subset of patients who develop severe COVID-19 and require intensive care unit admission could be at risk for developing post-intensive care unit syndrome, characterised by new or persistent physical, psychological, and cognitive impairments after hospital discharge. ('patients', 'Species', '9606', (12, 20)) ('COVID-19', 'Disease', 'MESH:C000657245', (40, 48)) ('post-intensive care unit syndrome', 'Disease', (123, 156)) ('COVID-19', 'Disease', (40, 48)) ('cognitive impairments', 'Phenotype', 'HP:0100543', (222, 243)) ('severe', 'Var', (33, 39)) ('cognitive impairments', 'Disease', 'MESH:D003072', (222, 243)) ('cognitive impairments', 'Disease', (222, 243)) 51014 33128872 In our opinion, patients with PPGL and mild COVID-19 infection or suspected COVID-19 infection not requiring hospitalisation, who are already on adrenoceptor blockers or other anti-hypertensives, can continue with these medications, and these anti-hypertensive regimens should not be interrupted as long as the blood pressure and heart rate remain stable. ('infection', 'Disease', (85, 94)) ('infection', 'Disease', 'MESH:D007239', (53, 62)) ('hypertensive', 'Disease', 'MESH:D006973', (181, 193)) ('infection', 'Disease', 'MESH:D007239', (85, 94)) ('COVID-19', 'Disease', 'MESH:C000657245', (44, 52)) ('hypertensive', 'Disease', 'MESH:D006973', (248, 260)) ('COVID-19', 'Disease', (76, 84)) ('hypertensive', 'Disease', (248, 260)) ('hypertensive', 'Disease', (181, 193)) ('patients', 'Species', '9606', (16, 24)) ('PPGL', 'Chemical', '-', (30, 34)) ('COVID-19', 'Disease', (44, 52)) ('PPGL', 'Var', (30, 34)) ('hypertensives', 'Disease', 'MESH:D006973', (181, 194)) ('anti-hypertensives', 'Phenotype', 'HP:0000822', (176, 194)) ('hypertensives', 'Disease', (181, 194)) ('COVID-19', 'Disease', 'MESH:C000657245', (76, 84)) ('infection', 'Disease', (53, 62)) 51016 33128872 Because patients with coexistent PPGL and COVID-19 are at risk for hyperglycaemia, optimal glycaemic control might be necessary for better outcomes. ('coexistent', 'Var', (22, 32)) ('PPGL', 'Gene', (33, 37)) ('hyperglycaemia', 'Disease', (67, 81)) ('hyperglycaemia', 'Disease', 'None', (67, 81)) ('PPGL', 'Chemical', '-', (33, 37)) ('COVID-19', 'Disease', 'MESH:C000657245', (42, 50)) ('COVID-19', 'Disease', (42, 50)) ('patients', 'Species', '9606', (8, 16)) 51021 33128872 However, if a patient remains stable on adrenoceptor blockade or there is no previously detected rapid tumour growth (regardless of secretory status), it is not unreasonable to actively monitor and defer surgery in a patient with COVID-19 and PPGL until the resolution of the infection or the patient tests negative for SARS-CoV-2 on a nasopharyngeal swab. ('infection', 'Disease', 'MESH:D007239', (276, 285)) ('SARS-CoV-2', 'Species', '2697049', (320, 330)) ('patient', 'Species', '9606', (217, 224)) ('tumour', 'Phenotype', 'HP:0002664', (103, 109)) ('PPGL', 'Chemical', '-', (243, 247)) ('tumour', 'Disease', 'MESH:D009369', (103, 109)) ('PPGL', 'Var', (243, 247)) ('infection', 'Disease', (276, 285)) ('patient', 'Species', '9606', (14, 21)) ('patient', 'Species', '9606', (293, 300)) ('COVID-19', 'Disease', 'MESH:C000657245', (230, 238)) ('tumour', 'Disease', (103, 109)) ('COVID-19', 'Disease', (230, 238)) 51038 32948195 Based on exome analysis, we identified pathogenic/likely pathogenic variants of the SDHx genes, frequently mutated in paragangliomas/pheochromocytomas. ('variants', 'Var', (68, 76)) ('paragangliomas/pheochromocytomas', 'Disease', (118, 150)) ('pathogenic/likely', 'Reg', (39, 56)) ('gliomas', 'Phenotype', 'HP:0009733', (125, 132)) ('glioma', 'Phenotype', 'HP:0009733', (125, 131)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (133, 150)) ('SDH', 'Gene', '6390', (84, 87)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (133, 149)) ('paraganglioma', 'Phenotype', 'HP:0002668', (118, 131)) ('paragangliomas', 'Phenotype', 'HP:0002668', (118, 132)) ('SDH', 'Gene', (84, 87)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (118, 150)) 51039 32948195 SDHB variants were found in three patients, whereas SDHD was mutated in two cases. ('SDHD', 'Gene', '6392', (52, 56)) ('found', 'Reg', (19, 24)) ('SDHB', 'Gene', '6390', (0, 4)) ('patients', 'Species', '9606', (34, 42)) ('variants', 'Var', (5, 13)) ('SDHB', 'Gene', (0, 4)) ('SDHD', 'Gene', (52, 56)) 51040 32948195 Moreover, likely pathogenic missense variants were also detected in SDHAF3 and SDHAF4 genes encoding for assembly factors for the succinate dehydrogenase (SDH) complex. ('succinate dehydrogenase', 'Gene', (130, 153)) ('SDH', 'Gene', '6390', (79, 82)) ('SDH', 'Gene', '6390', (155, 158)) ('SDHAF4', 'Gene', (79, 85)) ('SDH', 'Gene', (68, 71)) ('SDHAF3', 'Gene', '57001', (68, 74)) ('succinate dehydrogenase', 'Gene', '6390', (130, 153)) ('SDH', 'Gene', (79, 82)) ('SDH', 'Gene', (155, 158)) ('SDHAF4', 'Gene', '135154', (79, 85)) ('missense variants', 'Var', (28, 45)) ('SDHAF3', 'Gene', (68, 74)) ('pathogenic', 'Reg', (17, 27)) ('SDH', 'Gene', '6390', (68, 71)) 51041 32948195 In a patient, we found a novel variant of the IDH2 gene that was predicted as pathogenic by a series of algorithms used (such as SIFT, PolyPhen2, FATHMM, MutationTaster, and LRT). ('patient', 'Species', '9606', (5, 12)) ('IDH2', 'Gene', (46, 50)) ('IDH2', 'Gene', '3418', (46, 50)) ('MutationTaster', 'Var', (154, 168)) ('variant', 'Var', (31, 38)) 51042 32948195 Additionally, pathogenic/likely pathogenic variants were determined for several genes, including novel genes and some genes previously reported as associated with different types of tumors. ('tumors', 'Phenotype', 'HP:0002664', (182, 188)) ('associated', 'Reg', (147, 157)) ('tumors', 'Disease', 'MESH:D009369', (182, 188)) ('tumors', 'Disease', (182, 188)) ('variants', 'Var', (43, 51)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) 51043 32948195 Results indicate a high heterogeneity among VPGLs, however, it seems that driver events in most cases are associated with mutations in the SDHx genes and SDH assembly factor-coding genes that lead to disruptions in the SDH complex. ('SDH', 'Gene', '6390', (219, 222)) ('SDH', 'Gene', (139, 142)) ('VPGL', 'Phenotype', 'HP:0002886', (44, 48)) ('SDH', 'Gene', (154, 157)) ('lead to', 'Reg', (192, 199)) ('SDH', 'Gene', (219, 222)) ('SDH', 'Gene', '6390', (139, 142)) ('SDH', 'Gene', '6390', (154, 157)) ('mutations', 'Var', (122, 131)) ('VPGL', 'Chemical', '-', (44, 48)) ('disruptions', 'Var', (200, 211)) 51053 32948195 A familial form of HNPGLs predominantly occurs as paraganglioma syndromes and results from mutations in SDHA, SDHB, SDHC, SDHD, and SDHAF2 genes, encoding for succinate dehydrogenase (SDH; mitochondrial complex II) components. ('SDH', 'Gene', (116, 119)) ('SDH', 'Gene', '6390', (104, 107)) ('SDHA', 'Gene', (104, 108)) ('SDHD', 'Gene', (122, 126)) ('SDH', 'Gene', '6390', (184, 187)) ('SDHA', 'Gene', '6389', (104, 108)) ('SDHC', 'Gene', (116, 120)) ('SDHB', 'Gene', (110, 114)) ('occurs', 'Reg', (40, 46)) ('SDH', 'Gene', (122, 125)) ('SDH', 'Gene', '6390', (110, 113)) ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (50, 73)) ('SDH', 'Gene', (104, 107)) ('succinate dehydrogenase', 'Gene', (159, 182)) ('paraganglioma syndromes', 'Disease', (50, 73)) ('SDH', 'Gene', (184, 187)) ('results from', 'Reg', (78, 90)) ('SDH', 'Gene', '6390', (132, 135)) ('SDHA', 'Gene', (132, 136)) ('SDH', 'Gene', (110, 113)) ('paraganglioma', 'Phenotype', 'HP:0002668', (50, 63)) ('SDH', 'Gene', '6390', (116, 119)) ('SDHA', 'Gene', '6389', (132, 136)) ('glioma', 'Phenotype', 'HP:0009733', (57, 63)) ('SDHC', 'Gene', '6391', (116, 120)) ('HNPGLs', 'Phenotype', 'HP:0002864', (19, 25)) ('SDHAF2', 'Gene', '54949', (132, 138)) ('HNPGLs', 'Disease', (19, 25)) ('SDHAF2', 'Gene', (132, 138)) ('SDHD', 'Gene', '6392', (122, 126)) ('mutations', 'Var', (91, 100)) ('succinate dehydrogenase', 'Gene', '6390', (159, 182)) ('SDHB', 'Gene', '6390', (110, 114)) ('SDH', 'Gene', (132, 135)) ('SDH', 'Gene', '6390', (122, 125)) 51054 32948195 Mutations in the SDHD gene are the most frequently found in HNPGLs, followed by SDHB and SDHC mutations. ('SDHB', 'Gene', (80, 84)) ('SDHC', 'Gene', (89, 93)) ('SDHD', 'Gene', '6392', (17, 21)) ('HNPGLs', 'Phenotype', 'HP:0002864', (60, 66)) ('SDHC', 'Gene', '6391', (89, 93)) ('Mutations', 'Var', (0, 9)) ('SDHD', 'Gene', (17, 21)) ('HNPGLs', 'Disease', (60, 66)) ('found', 'Reg', (51, 56)) ('SDHB', 'Gene', '6390', (80, 84)) 51056 32948195 SDHAF2 variants rarely present in paragangliomas/pheochromocytomas (PGLs/PCCs). ('SDHAF2', 'Gene', '54949', (0, 6)) ('paragangliomas', 'Phenotype', 'HP:0002668', (34, 48)) ('paraganglioma', 'Phenotype', 'HP:0002668', (34, 47)) ('SDHAF2', 'Gene', (0, 6)) ('PCC', 'Gene', '1421', (73, 76)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (34, 66)) ('glioma', 'Phenotype', 'HP:0009733', (41, 47)) ('variants', 'Var', (7, 15)) ('paragangliomas/pheochromocytomas', 'Disease', (34, 66)) ('PCC', 'Gene', (73, 76)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (49, 66)) ('gliomas', 'Phenotype', 'HP:0009733', (41, 48)) ('present', 'Reg', (23, 30)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (49, 65)) 51057 32948195 Familial mutations in SDHA have been reported for Leigh syndrome and, most recently, a few have been identified for HNPGLs. ('SDHA', 'Gene', (22, 26)) ('HNPGLs', 'Phenotype', 'HP:0002864', (116, 122)) ('SDHA', 'Gene', '6389', (22, 26)) ('Leigh syndrome', 'Disease', (50, 64)) ('reported', 'Reg', (37, 45)) ('Familial mutations', 'Var', (0, 18)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (50, 64)) 51058 32948195 Mutations in the VHL, TMEM127, RET, NF1, and MAX genes also harbor the risk for HNPGL development. ('risk', 'Reg', (71, 75)) ('NF1', 'Gene', (36, 39)) ('RET', 'Gene', '5979', (31, 34)) ('MAX', 'Gene', (45, 48)) ('NF1', 'Gene', '4763', (36, 39)) ('RET', 'Gene', (31, 34)) ('TMEM127', 'Gene', (22, 29)) ('Mutations', 'Var', (0, 9)) ('VHL', 'Gene', (17, 20)) ('TMEM127', 'Gene', '55654', (22, 29)) ('VHL', 'Gene', '7428', (17, 20)) ('HNPGL', 'Disease', (80, 85)) 51059 32948195 Additionally, potentially driver somatic/germline variants were identified in several other genes, such as ARNT, BAP1, BRAF, BRCA1, BRCA2, CDKN2A, CSDE1, FGFR3, IDH1, KIF1B, KMT2D, MEN1, RET, JAG1, PRDM2, PRDM8, SETD2, ASPM, ZIC, and GRIK1. ('CSDE1', 'Gene', (147, 152)) ('PRDM8', 'Gene', '56978', (205, 210)) ('BRAF', 'Gene', '673', (119, 123)) ('BRAF', 'Gene', (119, 123)) ('variants', 'Var', (50, 58)) ('BRCA2', 'Gene', '675', (132, 137)) ('JAG1', 'Gene', '182', (192, 196)) ('KIF1B', 'Gene', (167, 172)) ('ASPM', 'Gene', (219, 223)) ('IDH1', 'Gene', '3417', (161, 165)) ('ZIC', 'Gene', (225, 228)) ('PRDM8', 'Gene', (205, 210)) ('MEN1', 'Gene', '4221', (181, 185)) ('CSDE1', 'Gene', '7812', (147, 152)) ('CDKN2A', 'Gene', '1029', (139, 145)) ('ASPM', 'Gene', '259266', (219, 223)) ('RET', 'Gene', (187, 190)) ('GRIK1', 'Gene', (234, 239)) ('KMT2D', 'Gene', (174, 179)) ('GRIK1', 'Gene', '2897', (234, 239)) ('MEN1', 'Gene', (181, 185)) ('ARNT', 'Gene', '405', (107, 111)) ('FGFR3', 'Gene', (154, 159)) ('RET', 'Gene', '5979', (187, 190)) ('BAP1', 'Gene', '8314', (113, 117)) ('ARNT', 'Gene', (107, 111)) ('SETD2', 'Gene', (212, 217)) ('ZIC', 'Gene', '7545', (225, 228)) ('FGFR3', 'Gene', '2261', (154, 159)) ('KIF1B', 'Gene', '23095', (167, 172)) ('PRDM2', 'Gene', (198, 203)) ('PRDM2', 'Gene', '7799', (198, 203)) ('JAG1', 'Gene', (192, 196)) ('BRCA2', 'Gene', (132, 137)) ('SETD2', 'Gene', '29072', (212, 217)) ('BRCA1', 'Gene', '672', (125, 130)) ('IDH1', 'Gene', (161, 165)) ('BRCA1', 'Gene', (125, 130)) ('KMT2D', 'Gene', '8085', (174, 179)) ('BAP1', 'Gene', (113, 117)) ('CDKN2A', 'Gene', (139, 145)) 51075 32948195 In VPGLs, we identified pathogenic/likely pathogenic variants of genes that were previously shown to be associated with PGLs/PCCs: VHL, SDHx, NF1, RET, HRAS, KRAS, EPAS1 (HIF2A), ATRX, CSDE1, BRAF, FGFR1, FGFR2, FGFR3, FGFR4, FGFRL1, SETD2, ARNT, TP53, TP53BP1, TP53BP2, TP53I13, KMT2D, BAP1, IDH1, IDH2, SDHAF1, SDHAP2, FH, EGLN1, MDH2, TMEM127, MAX, KIF1B, MEN1, GDNF, GNAS, CDKN2A, BRCA1, and BRCA2 as well as in other groups of genes (Additional file 1). ('SDH', 'Gene', (305, 308)) ('MDH2', 'Gene', (332, 336)) ('KMT2D', 'Gene', (280, 285)) ('SETD2', 'Gene', '29072', (234, 239)) ('RET', 'Gene', (147, 150)) ('SDH', 'Gene', (313, 316)) ('FH', 'Disease', 'MESH:D006938', (321, 323)) ('IDH1', 'Gene', (293, 297)) ('FGFR1', 'Gene', (198, 203)) ('FGFR3', 'Gene', '2261', (212, 217)) ('ATRX', 'Gene', '546', (179, 183)) ('TP53I13', 'Gene', (271, 278)) ('EGLN1', 'Gene', '54583', (325, 330)) ('SDHAP2', 'Gene', (313, 319)) ('GNAS', 'Gene', '2778', (371, 375)) ('TMEM127', 'Gene', (338, 345)) ('SDHAF1', 'Gene', '644096', (305, 311)) ('GDNF', 'Gene', (365, 369)) ('BRAF', 'Gene', '673', (192, 196)) ('BAP1', 'Gene', '8314', (287, 291)) ('KRAS', 'Gene', (158, 162)) ('FGFRL1', 'Gene', '53834', (226, 232)) ('CSDE1', 'Gene', (185, 190)) ('FGFR3', 'Gene', (212, 217)) ('EPAS1', 'Gene', (164, 169)) ('IDH2', 'Gene', (299, 303)) ('KIF1B', 'Gene', (352, 357)) ('NF1', 'Gene', (142, 145)) ('BAP1', 'Gene', (287, 291)) ('IDH2', 'Gene', '3418', (299, 303)) ('ATRX', 'Gene', (179, 183)) ('GNAS', 'Gene', (371, 375)) ('TP53BP1', 'Gene', '7158', (253, 260)) ('TP53BP2', 'Gene', (262, 269)) ('MDH2', 'Gene', '4191', (332, 336)) ('TP53', 'Gene', (247, 251)) ('VHL', 'Gene', (131, 134)) ('IDH1', 'Gene', '3417', (293, 297)) ('KMT2D', 'Gene', '8085', (280, 285)) ('SDH', 'Gene', '6390', (305, 308)) ('VPGL', 'Chemical', '-', (3, 7)) ('FGFR4', 'Gene', '2264', (219, 224)) ('TP53BP2', 'Gene', '7159', (262, 269)) ('ARNT', 'Gene', (241, 245)) ('VHL', 'Gene', '7428', (131, 134)) ('SDHAP2', 'Gene', '727956', (313, 319)) ('MEN1', 'Gene', '4221', (359, 363)) ('FGFR2', 'Gene', (205, 210)) ('BRAF', 'Gene', (192, 196)) ('TP53', 'Gene', '7157', (247, 251)) ('TP53', 'Gene', (253, 257)) ('NF1', 'Gene', '4763', (142, 145)) ('MEN1', 'Gene', (359, 363)) ('VPGL', 'Phenotype', 'HP:0002886', (3, 7)) ('SDH', 'Gene', '6390', (136, 139)) ('CSDE1', 'Gene', '7812', (185, 190)) ('BRCA2', 'Gene', (396, 401)) ('BRCA1', 'Gene', '672', (385, 390)) ('TP53', 'Gene', '7157', (253, 257)) ('TP53', 'Gene', (271, 275)) ('BRCA2', 'Gene', '675', (396, 401)) ('HRAS', 'Gene', (152, 156)) ('ARNT', 'Gene', '405', (241, 245)) ('TP53I13', 'Gene', '90313', (271, 278)) ('KRAS', 'Gene', '3845', (158, 162)) ('SDH', 'Gene', '6390', (313, 316)) ('FGFR1', 'Gene', '2260', (198, 203)) ('TP53', 'Gene', (262, 266)) ('HIF2A', 'Gene', '2034', (171, 176)) ('TP53', 'Gene', '7157', (271, 275)) ('FGFR4', 'Gene', (219, 224)) ('PCC', 'Gene', '1421', (125, 128)) ('HIF2A', 'Gene', (171, 176)) ('FGFR2', 'Gene', '2263', (205, 210)) ('CDKN2A', 'Gene', (377, 383)) ('TP53', 'Gene', '7157', (262, 266)) ('BRCA1', 'Gene', (385, 390)) ('CDKN2A', 'Gene', '1029', (377, 383)) ('SDH', 'Gene', (136, 139)) ('EPAS1', 'Gene', '2034', (164, 169)) ('TP53BP1', 'Gene', (253, 260)) ('HRAS', 'Gene', '3265', (152, 156)) ('EGLN1', 'Gene', (325, 330)) ('KIF1B', 'Gene', '23095', (352, 357)) ('FGFRL1', 'Gene', (226, 232)) ('RET', 'Gene', '5979', (147, 150)) ('TMEM127', 'Gene', '55654', (338, 345)) ('SDHAF1', 'Gene', (305, 311)) ('SETD2', 'Gene', (234, 239)) ('GDNF', 'Gene', '2668', (365, 369)) ('PCC', 'Gene', (125, 128)) ('variants', 'Var', (53, 61)) 51082 32948195 Exome analysis of the tumor revealed no variants in the potentially causative genes for PGLs/PCCs. ('tumor', 'Disease', 'MESH:D009369', (22, 27)) ('PCC', 'Gene', '1421', (93, 96)) ('tumor', 'Phenotype', 'HP:0002664', (22, 27)) ('tumor', 'Disease', (22, 27)) ('PCC', 'Gene', (93, 96)) ('variants', 'Var', (40, 48)) 51083 32948195 However, we found likely pathogenic variants characterized by high "pathogenicity scores" as well as by frameshift mutations in several tumor-associated genes, such as CYSLTR2, GPX2, ENPP7, CD34, UBA7, and others (Additional file 1). ('CYSLTR2', 'Gene', '57105', (168, 175)) ('frameshift mutations', 'Var', (104, 124)) ('CD34', 'Gene', (190, 194)) ('CD34', 'Gene', '947', (190, 194)) ('UBA7', 'Gene', '7318', (196, 200)) ('CYSLTR2', 'Gene', (168, 175)) ('GPX2', 'Gene', '2877', (177, 181)) ('ENPP7', 'Gene', '339221', (183, 188)) ('tumor', 'Disease', 'MESH:D009369', (136, 141)) ('ENPP7', 'Gene', (183, 188)) ('GPX2', 'Gene', (177, 181)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('variants', 'Var', (36, 44)) ('UBA7', 'Gene', (196, 200)) ('pathogenic', 'Reg', (25, 35)) ('tumor', 'Disease', (136, 141)) 51084 32948195 For the UTS2R gene, we identified a likely pathogenic variant, NM_018949: c.C313A, p.P105T (chr17: 80332513, rs140576840), that had not been reported in the ClinVar or COSMIC databases before. ('pathogenic', 'Reg', (43, 53)) ('c.C313A', 'Var', (74, 81)) ('p.P105T', 'Var', (83, 90)) ('p.P105T', 'Mutation', 'rs140576840', (83, 90)) ('rs140576840', 'Mutation', 'rs140576840', (109, 120)) ('UTS2R', 'Gene', '2837', (8, 13)) ('NM_018949: c.C313A', 'Mutation', 'rs140576840', (63, 81)) ('UTS2R', 'Gene', (8, 13)) 51088 32948195 A likely pathogenic variant, NM_004804: c.C296T, p.T99I (chr2: 96933370, rs780418079), was also determined for the CIAO1 gene. ('pathogenic', 'Reg', (9, 19)) ('c.C296T', 'Var', (40, 47)) ('CIAO1', 'Gene', '9391', (115, 120)) ('NM_004804: c.C296T', 'Mutation', 'rs780418079', (29, 47)) ('rs780418079', 'Mutation', 'rs780418079', (73, 84)) ('CIAO1', 'Gene', (115, 120)) ('p.T99I', 'Mutation', 'rs780418079', (49, 55)) ('rs780418079', 'Var', (73, 84)) 51090 32948195 Alterations in CIAO1 are associated with hereditary PGL/PCC syndromes according to the MalaCards database (https://www.malacards.org/). ('associated', 'Reg', (25, 35)) ('hereditary PGL/PCC syndromes', 'Disease', (41, 69)) ('Alterations', 'Var', (0, 11)) ('CIAO1', 'Gene', '9391', (15, 20)) ('CIAO1', 'Gene', (15, 20)) ('hereditary PGL/PCC syndromes', 'Disease', 'MESH:D010235', (41, 69)) 51091 32948195 The likely pathogenic missense variant NM_017558: c.G1352C, p.R451P (chr16: 71127814, rs7200485) of the HYDIN gene was also identified in this VPGL. ('HYDIN', 'Gene', (104, 109)) ('rs7200485', 'Mutation', 'rs7200485', (86, 95)) ('NM_017558: c.G1352C', 'Mutation', 'rs7200485', (39, 58)) ('p.R451P', 'Mutation', 'rs7200485', (60, 67)) ('VPGL', 'Phenotype', 'HP:0002886', (143, 147)) ('pathogenic', 'Reg', (11, 21)) ('c.G1352C', 'Var', (50, 58)) ('rs7200485', 'Var', (86, 95)) ('HYDIN', 'Gene', '54768', (104, 109)) ('VPGL', 'Chemical', '-', (143, 147)) 51093 32948195 Additionally, we found several likely pathogenic variants reported in the COSMIC database for the following genes: CD109 (COSM1621920; liver and lung cancer), CYSLTR2 (COSM1367341; colon cancer), DENND6B (COSM1035425; endometrial cancer), and OR9I1 (COSM385271; lung cancer). ('lung cancer', 'Disease', 'MESH:D008175', (145, 156)) ('COSM1621920;', 'Var', (122, 134)) ('lung cancer', 'Disease', (262, 273)) ('lung cancer', 'Phenotype', 'HP:0100526', (145, 156)) ('OR9I1', 'Gene', (243, 248)) ('colon cancer', 'Disease', (181, 193)) ('OR9I1', 'Gene', '219954', (243, 248)) ('liver and lung cancer', 'Disease', 'MESH:D008175', (135, 156)) ('DENND6B', 'Gene', (196, 203)) ('endometrial cancer', 'Phenotype', 'HP:0012114', (218, 236)) ('cancer', 'Phenotype', 'HP:0002664', (150, 156)) ('COSM385271;', 'Var', (250, 261)) ('lung cancer', 'Disease', 'MESH:D008175', (262, 273)) ('cancer', 'Phenotype', 'HP:0002664', (230, 236)) ('CYSLTR2', 'Gene', '57105', (159, 166)) ('colon cancer', 'Phenotype', 'HP:0003003', (181, 193)) ('endometrial cancer', 'Disease', (218, 236)) ('cancer', 'Phenotype', 'HP:0002664', (267, 273)) ('lung cancer', 'Disease', (145, 156)) ('COSM1367341;', 'Var', (168, 180)) ('lung cancer', 'Phenotype', 'HP:0100526', (262, 273)) ('CD109', 'Gene', (115, 120)) ('DENND6B', 'Gene', '414918', (196, 203)) ('endometrial cancer', 'Disease', 'MESH:D016889', (218, 236)) ('CD109', 'Gene', '135228', (115, 120)) ('CYSLTR2', 'Gene', (159, 166)) ('colon cancer', 'Disease', 'MESH:D015179', (181, 193)) ('cancer', 'Phenotype', 'HP:0002664', (187, 193)) ('pathogenic', 'Reg', (38, 48)) ('COSM1035425;', 'Var', (205, 217)) 51106 32948195 We detected a likely pathogenic missense variant in the SDHB gene, NM_003000: c.A307G, p.M103V (chr1: 17355211, rs140178341). ('NM_003000: c.A307G', 'Mutation', 'rs140178341', (67, 85)) ('SDHB', 'Gene', '6390', (56, 60)) ('SDHB', 'Gene', (56, 60)) ('p.M103V', 'Var', (87, 94)) ('rs140178341', 'Mutation', 'rs140178341', (112, 123)) ('c.A307G', 'Var', (78, 85)) ('pathogenic', 'Reg', (21, 31)) ('p.M103V', 'Mutation', 'rs140178341', (87, 94)) 51108 32948195 Additionally, two novel frameshift mutations were found in SDHB, NM_003000: c.308_309insTAAG, p.M103fs (chr1: 17355209) and NM_003000: c.304_305insATGAT, p.A102fs (chr1: 17355213). ('p.A102fs', 'Mutation', 'p.A102fsX', (154, 162)) ('p.M103fs', 'Mutation', 'p.M103fsX', (94, 102)) ('c.304_305insATGAT', 'Var', (135, 152)) ('p.A102fs', 'Var', (154, 162)) ('p.M103fs', 'Var', (94, 102)) ('SDHB', 'Gene', '6390', (59, 63)) ('SDHB', 'Gene', (59, 63)) ('c.308_309insTAAG', 'Var', (76, 92)) ('c.304_305insATGAT', 'INSERTION', 'None', (135, 152)) ('c.308_309insTAAG', 'INSERTION', 'None', (76, 92)) 51109 32948195 A likely pathogenic missense variant was also observed in ARNT, NM_001197325: c.C1834T, p.R612C (chr1: 150788806, rs778430234); a variant that had not been previously reported, neither in the ClinVar nor in the COSMIC databases. ('ARNT', 'Gene', '405', (58, 62)) ('pathogenic', 'Reg', (9, 19)) ('ARNT', 'Gene', (58, 62)) ('c.C1834T', 'Var', (78, 86)) ('p.R612C', 'Mutation', 'rs778430234', (88, 95)) ('rs778430234', 'Mutation', 'rs778430234', (114, 125)) ('p.R612C', 'Var', (88, 95)) ('NM_001197325: c.C1834T', 'Mutation', 'rs778430234', (64, 86)) 51110 32948195 However, likely pathogenic variants in the ARNT gene were earlier determined in CPGLs. ('CPGL', 'Phenotype', 'HP:0100635', (80, 84)) ('variants', 'Var', (27, 35)) ('ARNT', 'Gene', '405', (43, 47)) ('ARNT', 'Gene', (43, 47)) 51111 32948195 One of these distinctive genes is a novel likely pathogenic variant for RXFP1, NM_021634: c.G172A, p.D58N (chr4: 159493972). ('p.D58N', 'Mutation', 'rs1351663425', (99, 105)) ('RXFP1', 'Gene', (72, 77)) ('NM_021634: c.G172A', 'Mutation', 'rs1351663425', (79, 97)) ('RXFP1', 'Gene', '59350', (72, 77)) ('c.G172A', 'Var', (90, 97)) ('pathogenic', 'Reg', (49, 59)) ('p.D58N', 'Var', (99, 105)) 51115 32948195 A likely pathogenic variant NM_024776: c.C2908T, p.R970C (crh15: 77471361, rs117879553) in the PEAK1 gene was also revealed in this patient's VPGL. ('pathogenic', 'Reg', (9, 19)) ('NM_024776: c.C2908T', 'Mutation', 'rs117879553', (28, 47)) ('rs117879553', 'Mutation', 'rs117879553', (75, 86)) ('VPGL', 'Chemical', '-', (142, 146)) ('c.C2908T', 'Var', (39, 47)) ('p.R970C', 'Mutation', 'rs117879553', (49, 56)) ('PEAK1', 'Gene', (95, 100)) ('VPGL', 'Phenotype', 'HP:0002886', (142, 146)) ('rs117879553', 'Var', (75, 86)) ('patient', 'Species', '9606', (132, 139)) ('PEAK1', 'Gene', '79834', (95, 100)) ('p.R970C', 'Var', (49, 56)) 51119 32948195 We determined a likely pathogenic variant NM_004787: c.A934G, p.I312V (chr4: 20512137, rs139850475) for this gene. ('NM_004787: c.A934G', 'Mutation', 'rs139850475', (42, 60)) ('p.I312V', 'Var', (62, 69)) ('c.A934G', 'Var', (53, 60)) ('rs139850475', 'Mutation', 'rs139850475', (87, 98)) ('pathogenic', 'Reg', (23, 33)) ('rs139850475', 'Var', (87, 98)) ('p.I312V', 'Mutation', 'rs139850475', (62, 69)) 51122 32948195 On the other hand, it has been reported that SLIT2 is frequently inactivated in gliomas by hypermethylation at the CpG island within its promoter region and can act as a tumor suppressor gene. ('tumor', 'Disease', 'MESH:D009369', (170, 175)) ('gliomas', 'Phenotype', 'HP:0009733', (80, 87)) ('gliomas', 'Disease', (80, 87)) ('inactivated', 'NegReg', (65, 76)) ('tumor', 'Phenotype', 'HP:0002664', (170, 175)) ('SLIT2', 'Gene', (45, 50)) ('gliomas', 'Disease', 'MESH:D005910', (80, 87)) ('SLIT2', 'Gene', '9353', (45, 50)) ('tumor', 'Disease', (170, 175)) ('glioma', 'Phenotype', 'HP:0009733', (80, 86)) ('hypermethylation', 'Var', (91, 107)) 51123 32948195 A likely pathogenic variant was also found in the AMPH gene, NM_001635: c.A2024G, p.Q675R (chr7: 38424483, rs147019216T). ('pathogenic', 'Reg', (9, 19)) ('AMPH', 'Gene', (50, 54)) ('p.Q675R', 'Var', (82, 89)) ('c.A2024G', 'Var', (72, 80)) ('p.Q675R', 'Mutation', 'rs147019216', (82, 89)) ('AMPH', 'Gene', '273', (50, 54)) ('rs147019216T', 'Var', (107, 119)) ('NM_001635: c.A2024G', 'Mutation', 'rs147019216', (61, 80)) 51126 32948195 Additionally, AMPH knockdown reduces apoptosis and promotes cell cycle progression and migration of breast cancer cells. ('migration', 'CPA', (87, 96)) ('AMPH', 'Gene', '273', (14, 18)) ('apoptosis', 'CPA', (37, 46)) ('cancer', 'Phenotype', 'HP:0002664', (107, 113)) ('knockdown', 'Var', (19, 28)) ('breast cancer', 'Disease', 'MESH:D001943', (100, 113)) ('promotes', 'PosReg', (51, 59)) ('breast cancer', 'Phenotype', 'HP:0003002', (100, 113)) ('breast cancer', 'Disease', (100, 113)) ('reduces', 'NegReg', (29, 36)) ('AMPH', 'Gene', (14, 18)) ('cell cycle progression', 'CPA', (60, 82)) 51127 32948195 In the HAPLN3 gene, we also identified a likely pathogenic variant, NM_178232: c.G316A, p.G106R (chr15: 89424765, rs140982817), described in the COSMIC database as associated with lung and caecum cancer (COSM1375297). ('rs140982817', 'Var', (114, 125)) ('cancer', 'Phenotype', 'HP:0002664', (196, 202)) ('NM_178232: c.G316A', 'Mutation', 'rs140982817', (68, 86)) ('associated', 'Reg', (164, 174)) ('HAPLN3', 'Gene', '145864', (7, 13)) ('HAPLN3', 'Gene', (7, 13)) ('cancer', 'Disease', 'MESH:D009369', (196, 202)) ('p.G106R', 'Mutation', 'rs140982817', (88, 95)) ('cancer', 'Disease', (196, 202)) ('p.G106R', 'Var', (88, 95)) ('c.G316A', 'Var', (79, 86)) ('rs140982817', 'Mutation', 'rs140982817', (114, 125)) 51134 32948195 Exome analysis of the VPGL revealed the existence of likely pathogenic missense variants of both the SDHAF3 and SDHAF4 genes: NM_020186: c.T157C, p.F53L (chr7: 96747192, rs62624461) and NM_145267: c.C223T, p.P75S (chr6: 71298323, rs146446063), respectively (Additional file 1). ('p.P75S', 'Var', (206, 212)) ('SDHAF4', 'Gene', (112, 118)) ('c.T157C', 'Var', (137, 144)) ('NM_145267: c.C223T', 'Mutation', 'rs146446063', (186, 204)) ('SDHAF4', 'Gene', '135154', (112, 118)) ('p.P75S', 'Mutation', 'rs146446063', (206, 212)) ('pathogenic', 'Reg', (60, 70)) ('rs62624461', 'Mutation', 'rs62624461', (170, 180)) ('VPGL', 'Chemical', '-', (22, 26)) ('p.F53L', 'Mutation', 'rs62624461', (146, 152)) ('rs146446063', 'Var', (230, 241)) ('NM_145267: c.C223T', 'Var', (186, 204)) ('NM_020186: c.T157C', 'Mutation', 'rs62624461', (126, 144)) ('p.F53L', 'Var', (146, 152)) ('rs146446063', 'Mutation', 'rs146446063', (230, 241)) ('SDHAF3', 'Gene', '57001', (101, 107)) ('NM_020186: c.T157C', 'Var', (126, 144)) ('VPGL', 'Phenotype', 'HP:0002886', (22, 26)) ('rs62624461', 'Var', (170, 180)) ('SDHAF3', 'Gene', (101, 107)) 51136 32948195 Previously, we found a likely pathogenic missense variant of SDHAF3 from CPGL (not published). ('SDHAF3', 'Gene', '57001', (61, 67)) ('missense variant', 'Var', (41, 57)) ('pathogenic', 'Reg', (30, 40)) ('SDHAF3', 'Gene', (61, 67)) ('CPGL', 'Phenotype', 'HP:0100635', (73, 77)) 51137 32948195 A variant of this gene, which may probably damage the protein function (according to the in silico tools used for analysis), was determined in familial and sporadic PGLs/PCCs. ('protein function', 'MPA', (54, 70)) ('PCC', 'Gene', (170, 173)) ('variant', 'Var', (2, 9)) ('determined', 'Reg', (129, 139)) ('PCC', 'Gene', '1421', (170, 173)) ('damage', 'Reg', (43, 49)) 51138 32948195 For VPGL, we revealed several likely pathogenic variants of the COL19A1 (COSM1235991; related to plasma cell myeloma and lung cancer), SEC31B (COSM913945; involved in endometrial and colorectal cancer), THSD7B (COSM247830; associated with prostate cancer), and TIAM1 (COSM1566097, COSM1566096; related to rectum cancer) genes, which have been previously described in the COSMIC database. ('lung cancer', 'Disease', 'MESH:D008175', (121, 132)) ('myeloma', 'Disease', (109, 116)) ('pathogenic', 'Reg', (37, 47)) ('COL19A1', 'Gene', (64, 71)) ('rectum cancer', 'Phenotype', 'HP:0100743', (305, 318)) ('lung cancer', 'Phenotype', 'HP:0100526', (121, 132)) ('cancer', 'Phenotype', 'HP:0002664', (312, 318)) ('colorectal cancer', 'Disease', 'MESH:D015179', (183, 200)) ('cancer', 'Phenotype', 'HP:0002664', (248, 254)) ('TIAM1', 'Gene', (261, 266)) ('endometrial', 'Disease', (167, 178)) ('prostate cancer', 'Disease', 'MESH:D011471', (239, 254)) ('prostate cancer', 'Phenotype', 'HP:0012125', (239, 254)) ('colorectal cancer', 'Disease', (183, 200)) ('cancer', 'Phenotype', 'HP:0002664', (126, 132)) ('VPGL', 'Chemical', '-', (4, 8)) ('rectum cancer', 'Disease', 'MESH:D012004', (305, 318)) ('prostate cancer', 'Disease', (239, 254)) ('variants', 'Var', (48, 56)) ('lung cancer', 'Disease', (121, 132)) ('SEC31B', 'Gene', (135, 141)) ('myeloma', 'Disease', 'MESH:D009101', (109, 116)) ('TIAM1', 'Gene', '7074', (261, 266)) ('THSD7B', 'Gene', (203, 209)) ('rectum cancer', 'Disease', (305, 318)) ('cancer', 'Phenotype', 'HP:0002664', (194, 200)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (183, 200)) ('VPGL', 'Phenotype', 'HP:0002886', (4, 8)) ('plasma cell myeloma', 'Phenotype', 'HP:0006775', (97, 116)) 51139 32948195 Additionally, we identified likely pathogenic variants of CRNN, CYP4B1, ELL, ENPP7, FAT2, NCOR2, SART1, TIAM1, VIM, and other genes involved in tumorigenesis according to literature data. ('ELL', 'Gene', '8178', (72, 75)) ('ELL', 'Gene', (72, 75)) ('TIAM1', 'Gene', (104, 109)) ('FAT2', 'Gene', (84, 88)) ('TIAM1', 'Gene', '7074', (104, 109)) ('tumor', 'Disease', (144, 149)) ('pathogenic', 'Reg', (35, 45)) ('variants', 'Var', (46, 54)) ('tumor', 'Disease', 'MESH:D009369', (144, 149)) ('CRNN', 'Gene', '49860', (58, 62)) ('NCOR2', 'Gene', (90, 95)) ('VIM', 'Gene', '7431', (111, 114)) ('SART1', 'Gene', '9092', (97, 102)) ('ENPP7', 'Gene', (77, 82)) ('NCOR2', 'Gene', '9612', (90, 95)) ('VIM', 'Gene', (111, 114)) ('SART1', 'Gene', (97, 102)) ('CYP4B1', 'Gene', '1580', (64, 70)) ('ENPP7', 'Gene', '339221', (77, 82)) ('CRNN', 'Gene', (58, 62)) ('FAT2', 'Gene', '2196', (84, 88)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) ('CYP4B1', 'Gene', (64, 70)) 51149 32948195 In the VPGL of this patient, we found no pathogenic/likely pathogenic variants for any of the PGL/PCC potentially causative genes, including SDHx (Additional file 1). ('SDH', 'Gene', '6390', (141, 144)) ('VPGL', 'Chemical', '-', (7, 11)) ('PCC', 'Gene', (98, 101)) ('variants', 'Var', (70, 78)) ('patient', 'Species', '9606', (20, 27)) ('SDH', 'Gene', (141, 144)) ('VPGL', 'Phenotype', 'HP:0002886', (7, 11)) ('PCC', 'Gene', '1421', (98, 101)) 51150 32948195 Nevertheless, for several genes, we identified likely pathogenic variants reported in the COSMIC database and associated with different types of cancer: ACAD11 (COSM3695823; colon cancer), MTNR1B (COSM1561913; rectum, lung, liver, and colorectal cancer), NTF4 (COSM3404440; glioma and rhabdomyosarcoma), PATZ1 (COSM273076; acute lymphoblastic leukaemia and colon cancer), SAMD9L (COSM3784101; prostate cancer), and TRIM16 (COSM401683; lung cancer). ('cancer', 'Disease', (145, 151)) ('MTNR1B', 'Gene', (189, 195)) ('ACAD11', 'Gene', (153, 159)) ('PATZ1', 'Gene', '23598', (304, 309)) ('cancer', 'Phenotype', 'HP:0002664', (145, 151)) ('acute lymphoblastic leukaemia and colon cancer', 'Disease', 'MESH:D015179', (323, 369)) ('COSM3695823;', 'Var', (161, 173)) ('cancer', 'Disease', 'MESH:D009369', (363, 369)) ('glioma', 'Disease', (274, 280)) ('COSM1561913;', 'Var', (197, 209)) ('acute lymphoblastic leukaemia', 'Phenotype', 'HP:0006721', (323, 352)) ('cancer', 'Disease', 'MESH:D009369', (402, 408)) ('COSM401683;', 'Var', (423, 434)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (235, 252)) ('NTF4', 'Gene', '4909', (255, 259)) ('PATZ1', 'Gene', (304, 309)) ('sarcoma', 'Phenotype', 'HP:0100242', (294, 301)) ('glioma', 'Disease', 'MESH:D005910', (274, 280)) ('lung cancer', 'Disease', (435, 446)) ('colon cancer', 'Phenotype', 'HP:0003003', (357, 369)) ('cancer', 'Disease', (246, 252)) ('colon cancer', 'Phenotype', 'HP:0003003', (174, 186)) ('variants', 'Var', (65, 73)) ('lung', 'Disease', (218, 222)) ('cancer', 'Phenotype', 'HP:0002664', (246, 252)) ('rhabdomyosarcoma', 'Disease', (285, 301)) ('cancer', 'Disease', 'MESH:D009369', (440, 446)) ('cancer', 'Disease', 'MESH:D009369', (145, 151)) ('cancer', 'Disease', (180, 186)) ('MTNR1B', 'Gene', '4544', (189, 195)) ('TRIM16', 'Gene', (415, 421)) ('glioma', 'Phenotype', 'HP:0009733', (274, 280)) ('cancer', 'Phenotype', 'HP:0002664', (180, 186)) ('colorectal cancer', 'Disease', 'MESH:D015179', (235, 252)) ('colon cancer', 'Disease', 'MESH:D015179', (174, 186)) ('lung cancer', 'Disease', 'MESH:D008175', (435, 446)) ('cancer', 'Disease', (363, 369)) ('colon cancer', 'Disease', 'MESH:D015179', (357, 369)) ('cancer', 'Disease', 'MESH:D009369', (180, 186)) ('SAMD9L', 'Gene', (372, 378)) ('cancer', 'Disease', (402, 408)) ('COSM273076;', 'Var', (311, 322)) ('TRIM16', 'Gene', '10626', (415, 421)) ('lung cancer', 'Phenotype', 'HP:0100526', (435, 446)) ('rhabdomyosarcoma', 'Disease', 'MESH:D012208', (285, 301)) ('cancer', 'Phenotype', 'HP:0002664', (402, 408)) ('colorectal cancer', 'Disease', (235, 252)) ('cancer', 'Disease', 'MESH:D009369', (246, 252)) ('cancer', 'Phenotype', 'HP:0002664', (363, 369)) ('SAMD9L', 'Gene', '219285', (372, 378)) ('prostate cancer', 'Disease', 'MESH:D011471', (393, 408)) ('rhabdomyosarcoma', 'Phenotype', 'HP:0002859', (285, 301)) ('prostate cancer', 'Phenotype', 'HP:0012125', (393, 408)) ('COSM3404440;', 'Var', (261, 273)) ('NTF4', 'Gene', (255, 259)) ('colon cancer', 'Disease', (174, 186)) ('ACAD11', 'Gene', '84129', (153, 159)) ('liver', 'Disease', (224, 229)) ('COSM3784101;', 'Var', (380, 392)) ('cancer', 'Disease', (440, 446)) ('colon cancer', 'Disease', (357, 369)) ('prostate cancer', 'Disease', (393, 408)) 51151 32948195 A likely pathogenic variant was also revealed for the AMBRA1 gene, involved in cancer development and chemotherapy resistance. ('pathogenic', 'Reg', (9, 19)) ('cancer', 'Phenotype', 'HP:0002664', (79, 85)) ('AMBRA1', 'Gene', (54, 60)) ('AMBRA1', 'Gene', '55626', (54, 60)) ('cancer', 'Disease', (79, 85)) ('cancer', 'Disease', 'MESH:D009369', (79, 85)) ('variant', 'Var', (20, 27)) 51152 32948195 Several other genes with likely pathogenic variants that were previously shown to participate in tumorigenesis were also found within this patient's exome. ('tumor', 'Disease', 'MESH:D009369', (97, 102)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('tumor', 'Disease', (97, 102)) ('variants', 'Var', (43, 51)) ('patient', 'Species', '9606', (139, 146)) 51153 32948195 For example, the CHST4 gene, which is associated with colon mucinous adenocarcinoma (MalaCards database); CLCA4, a tumor suppressor gene encoding for the calcium-activated chloride channel A4 that can inhibit tumor cell proliferation, migration, and invasion; ESR1, characterized by mutations responsible for the resistance to endocrine therapy in breast cancer; P2RY1, involved in the regulation of multidrug chemoresistance of bladder cancer cells; and PATZ1, which acts as a tumor suppressor gene in thyroid cancer and is associated with the development of testicular tumors, sarcoma, and lung cancer. ('CHST4', 'Gene', '10164', (17, 22)) ('tumor', 'Phenotype', 'HP:0002664', (571, 576)) ('tumor', 'Disease', (115, 120)) ('thyroid cancer', 'Disease', (503, 517)) ('ESR1', 'Gene', '2099', (260, 264)) ('PATZ1', 'Gene', '23598', (455, 460)) ('PATZ1', 'Gene', (455, 460)) ('bladder cancer', 'Disease', (429, 443)) ('bladder cancer', 'Disease', 'MESH:D001749', (429, 443)) ('breast cancer', 'Phenotype', 'HP:0003002', (348, 361)) ('tumor', 'Disease', 'MESH:D009369', (115, 120)) ('sarcoma', 'Phenotype', 'HP:0100242', (579, 586)) ('cancer', 'Phenotype', 'HP:0002664', (597, 603)) ('tumor', 'Disease', (209, 214)) ('associated', 'Reg', (38, 48)) ('ESR1', 'Gene', (260, 264)) ('invasion', 'CPA', (250, 258)) ('tumor', 'Disease', (478, 483)) ('bladder cancer', 'Phenotype', 'HP:0009725', (429, 443)) ('testicular tumors', 'Disease', (560, 577)) ('cancer', 'Phenotype', 'HP:0002664', (437, 443)) ('colon mucinous adenocarcinoma', 'Disease', (54, 83)) ('P2RY1', 'Gene', '5028', (363, 368)) ('tumor', 'Disease', 'MESH:D009369', (209, 214)) ('lung cancer', 'Disease', (592, 603)) ('breast cancer', 'Disease', 'MESH:D001943', (348, 361)) ('thyroid cancer', 'Disease', 'MESH:D013964', (503, 517)) ('tumor', 'Disease', 'MESH:D009369', (478, 483)) ('breast cancer', 'Disease', (348, 361)) ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('colon mucinous adenocarcinoma', 'Disease', 'MESH:D002288', (54, 83)) ('tumor', 'Disease', (571, 576)) ('mutations', 'Var', (283, 292)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (503, 517)) ('cancer', 'Phenotype', 'HP:0002664', (355, 361)) ('CHST4', 'Gene', (17, 22)) ('tumor', 'Disease', 'MESH:D009369', (571, 576)) ('tumor', 'Phenotype', 'HP:0002664', (209, 214)) ('testicular tumors', 'Disease', 'MESH:D013736', (560, 577)) ('tumor', 'Phenotype', 'HP:0002664', (478, 483)) ('testicular tumors', 'Phenotype', 'HP:0010788', (560, 577)) ('inhibit', 'NegReg', (201, 208)) ('lung cancer', 'Disease', 'MESH:D008175', (592, 603)) ('CLCA4', 'Gene', '22802', (106, 111)) ('carcinoma', 'Phenotype', 'HP:0030731', (74, 83)) ('sarcoma', 'Disease', 'MESH:D012509', (579, 586)) ('P2RY1', 'Gene', (363, 368)) ('tumors', 'Phenotype', 'HP:0002664', (571, 577)) ('CLCA4', 'Gene', (106, 111)) ('lung cancer', 'Phenotype', 'HP:0100526', (592, 603)) ('sarcoma', 'Disease', (579, 586)) ('cancer', 'Phenotype', 'HP:0002664', (511, 517)) ('associated', 'Reg', (525, 535)) 51154 32948195 Furthermore, we found alterations in the PRKCI gene related to many tumors and WIF1 hypermethylation, frequently observed in cancer cells. ('tumors', 'Disease', (68, 74)) ('WIF1', 'Gene', (79, 83)) ('tumors', 'Disease', 'MESH:D009369', (68, 74)) ('WIF1', 'Gene', '11197', (79, 83)) ('tumors', 'Phenotype', 'HP:0002664', (68, 74)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('cancer', 'Phenotype', 'HP:0002664', (125, 131)) ('alterations', 'Var', (22, 33)) ('PRKCI', 'Gene', '5584', (41, 46)) ('related', 'Reg', (52, 59)) ('hypermethylation', 'Var', (84, 100)) ('cancer', 'Disease', (125, 131)) ('cancer', 'Disease', 'MESH:D009369', (125, 131)) ('PRKCI', 'Gene', (41, 46)) 51164 32948195 Exome analysis of the VPGL revealed likely pathogenic variants in several PGL/PCC potentially causative genes: SDHB, SDHAF4, FGFRL1, and IDH2 (Additional file 1). ('SDHAF4', 'Gene', (117, 123)) ('SDHB', 'Gene', (111, 115)) ('FGFRL1', 'Gene', (125, 131)) ('PCC', 'Gene', (78, 81)) ('IDH2', 'Gene', (137, 141)) ('pathogenic', 'Reg', (43, 53)) ('FGFRL1', 'Gene', '53834', (125, 131)) ('VPGL', 'Phenotype', 'HP:0002886', (22, 26)) ('IDH2', 'Gene', '3418', (137, 141)) ('SDHAF4', 'Gene', '135154', (117, 123)) ('PCC', 'Gene', '1421', (78, 81)) ('variants', 'Var', (54, 62)) ('VPGL', 'Chemical', '-', (22, 26)) ('SDHB', 'Gene', '6390', (111, 115)) 51165 32948195 A splice acceptor mutation identified in the SDHB gene (chr1: 17350571, rs786201161) was described as a germline pathogenic variant in the ClinVar database. ('rs786201161', 'Mutation', 'rs786201161', (72, 83)) ('rs786201161', 'Var', (72, 83)) ('SDHB', 'Gene', '6390', (45, 49)) ('SDHB', 'Gene', (45, 49)) 51166 32948195 This variant has been previously reported in association with an SDHB-related disorder, hereditary cancer-predisposing syndrome, gastrointestinal stromal tumor, and hereditary PGL/PCC syndromes. ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (129, 159)) ('hereditary PGL/PCC syndromes', 'Disease', (165, 193)) ('tumor', 'Phenotype', 'HP:0002664', (154, 159)) ('gastrointestinal stromal tumor', 'Disease', (129, 159)) ('variant', 'Var', (5, 12)) ('hereditary cancer', 'Disease', 'MESH:D009369', (88, 105)) ('hereditary PGL/PCC syndromes', 'Disease', 'MESH:D010235', (165, 193)) ('SDHB', 'Gene', '6390', (65, 69)) ('reported', 'Reg', (33, 41)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (129, 159)) ('association', 'Reg', (45, 56)) ('hereditary cancer', 'Disease', (88, 105)) ('cancer', 'Phenotype', 'HP:0002664', (99, 105)) ('SDHB', 'Gene', (65, 69)) 51167 32948195 The mutation destroys the canonical splice acceptor site within intron 5 of the SDHB gene and is expected to cause abnormal gene splicing, likely resulting in an absent or disrupted protein product. ('cause', 'Reg', (109, 114)) ('SDHB', 'Gene', (80, 84)) ('gene splicing', 'MPA', (124, 137)) ('mutation', 'Var', (4, 12)) ('absent', 'NegReg', (162, 168)) ('disrupted', 'NegReg', (172, 181)) ('destroys', 'NegReg', (13, 21)) ('canonical splice acceptor site', 'MPA', (26, 56)) ('protein product', 'MPA', (182, 197)) ('SDHB', 'Gene', '6390', (80, 84)) 51168 32948195 For SDHAF4, we found a novel likely pathogenic missense mutation NM_145267: c.C223T, p.P75S (chr6: 71298323, rs146446063). ('rs146446063', 'Mutation', 'rs146446063', (109, 120)) ('SDHAF4', 'Gene', '135154', (4, 10)) ('c.C223T', 'Var', (76, 83)) ('pathogenic', 'Reg', (36, 46)) ('p.P75S', 'Var', (85, 91)) ('rs146446063', 'Var', (109, 120)) ('NM_145267: c.C223T', 'Mutation', 'rs146446063', (65, 83)) ('SDHAF4', 'Gene', (4, 10)) ('p.P75S', 'Mutation', 'rs146446063', (85, 91)) 51169 32948195 The likely pathogenic missense mutation identified in the FGFRL1 gene, NM_001004356: c.C442T, p.R148C (chr4: 1017613, rs201696860), has not been previously reported in the ClinVar database; however, it was detected in lung adenocarcinoma and described in the COSMIC database (COSM119740). ('p.R148C', 'Mutation', 'rs201696860', (94, 101)) ('FGFRL1', 'Gene', '53834', (58, 64)) ('FGFRL1', 'Gene', (58, 64)) ('lung adenocarcinoma', 'Phenotype', 'HP:0030078', (218, 237)) ('carcinoma', 'Phenotype', 'HP:0030731', (228, 237)) ('lung adenocarcinoma', 'Disease', (218, 237)) ('rs201696860', 'Mutation', 'rs201696860', (118, 129)) ('lung adenocarcinoma', 'Disease', 'MESH:D000077192', (218, 237)) ('c.C442T', 'Var', (85, 92)) ('NM_001004356: c.C442T', 'Mutation', 'rs201696860', (71, 92)) ('pathogenic', 'Reg', (11, 21)) ('p.R148C', 'Var', (94, 101)) 51170 32948195 Finally, in the IDH2 gene, we found a novel mutation NM_001289910: c.T998C, p.L333P (chr15: 90628257) that was predicted as a likely pathogenic variant according to all the prediction algorithms used. ('IDH2', 'Gene', (16, 20)) ('pathogenic', 'Reg', (133, 143)) ('p.L333P', 'Var', (76, 83)) ('IDH2', 'Gene', '3418', (16, 20)) ('p.L333P', 'Mutation', 'p.L333P', (76, 83)) ('NM_001289910: c.T998C', 'Mutation', 'c.998T>C', (53, 74)) 51171 32948195 For this VPGL, we also determined likely pathogenic variants in a few genes that were reported in the COSMIC database and associated with different types of cancer: ATP2A1 (COSM1184049; colon cancer), ACAD11 (COSM3695823; colon cancer), ERCC4 (COSM967199; endometrial, colorectal, and papillary thyroid cancer), and VPS13B (COSM3698729, COSM3698730; colon cancer and lung bronchioloalveolar adenocarcinoma). ('VPS13B', 'Gene', '157680', (316, 322)) ('ACAD11', 'Gene', (201, 207)) ('variants', 'Var', (52, 60)) ('ERCC4', 'Gene', '2072', (237, 242)) ('colon cancer', 'Disease', (222, 234)) ('endometrial', 'Disease', (256, 267)) ('ERCC4', 'Gene', (237, 242)) ('cancer', 'Disease', (192, 198)) ('adenocarcinoma', 'Disease', 'MESH:D000230', (391, 405)) ('cancer', 'Disease', 'MESH:D009369', (157, 163)) ('COSM967199;', 'Var', (244, 255)) ('colon cancer', 'Disease', 'MESH:D015179', (186, 198)) ('VPGL', 'Phenotype', 'HP:0002886', (9, 13)) ('cancer', 'Phenotype', 'HP:0002664', (192, 198)) ('cancer', 'Disease', (303, 309)) ('carcinoma', 'Phenotype', 'HP:0030731', (396, 405)) ('colon cancer', 'Phenotype', 'HP:0003003', (350, 362)) ('VPS13B', 'Gene', (316, 322)) ('cancer', 'Disease', (356, 362)) ('papillary thyroid cancer', 'Disease', (285, 309)) ('cancer', 'Phenotype', 'HP:0002664', (303, 309)) ('cancer', 'Phenotype', 'HP:0002664', (356, 362)) ('COSM3698730', 'Var', (337, 348)) ('COSM1184049', 'Var', (173, 184)) ('colorectal', 'Disease', (269, 279)) ('colon cancer', 'Phenotype', 'HP:0003003', (222, 234)) ('cancer', 'Disease', (228, 234)) ('colon cancer', 'Disease', (186, 198)) ('colon cancer', 'Disease', 'MESH:D015179', (350, 362)) ('cancer', 'Phenotype', 'HP:0002664', (228, 234)) ('cancer', 'Disease', 'MESH:D009369', (192, 198)) ('cancer', 'Disease', (157, 163)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (285, 309)) ('cancer', 'Disease', 'MESH:D009369', (303, 309)) ('associated', 'Reg', (122, 132)) ('cancer', 'Phenotype', 'HP:0002664', (157, 163)) ('COSM3695823', 'Var', (209, 220)) ('cancer', 'Disease', 'MESH:D009369', (356, 362)) ('colon cancer', 'Disease', 'MESH:D015179', (222, 234)) ('adenocarcinoma', 'Disease', (391, 405)) ('ACAD11', 'Gene', '84129', (201, 207)) ('ATP2A1', 'Gene', '487', (165, 171)) ('VPGL', 'Chemical', '-', (9, 13)) ('colorectal', 'Disease', 'MESH:D015179', (269, 279)) ('COSM3698729', 'Var', (324, 335)) ('ATP2A1', 'Gene', (165, 171)) ('colon cancer', 'Disease', (350, 362)) ('papillary thyroid cancer', 'Disease', 'MESH:D000077273', (285, 309)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (295, 309)) ('colon cancer', 'Phenotype', 'HP:0003003', (186, 198)) ('cancer', 'Disease', 'MESH:D009369', (228, 234)) 51172 32948195 Moreover, likely pathogenic variants were identified in genes reported as tumor-associated ones according to the literature; for example, in CD248, LGR5, LRP1B, PBRM1, and PTPA. ('CD248', 'Gene', '57124', (141, 146)) ('PBRM1', 'Gene', (161, 166)) ('PTPA', 'Gene', '5524', (172, 176)) ('tumor', 'Disease', 'MESH:D009369', (74, 79)) ('LGR5', 'Gene', '8549', (148, 152)) ('LRP1B', 'Gene', (154, 159)) ('variants', 'Var', (28, 36)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('PBRM1', 'Gene', '55193', (161, 166)) ('LRP1B', 'Gene', '53353', (154, 159)) ('tumor', 'Disease', (74, 79)) ('PTPA', 'Gene', (172, 176)) ('CD248', 'Gene', (141, 146)) ('LGR5', 'Gene', (148, 152)) ('pathogenic', 'Reg', (17, 27)) 51180 32948195 Using whole-exome sequencing, we found a pathogenic germline mutation in the SDHD gene, NM_003002: c.A305G, p.H102R (chr11: 111959726, rs104894302) (Additional file 1). ('rs104894302', 'Var', (135, 146)) ('p.H102R', 'Mutation', 'rs104894302', (108, 115)) ('rs104894302', 'Mutation', 'rs104894302', (135, 146)) ('SDHD', 'Gene', '6392', (77, 81)) ('SDHD', 'Gene', (77, 81)) ('c.A305G', 'Var', (99, 106)) ('p.H102R', 'Var', (108, 115)) ('pathogenic', 'Reg', (41, 51)) ('NM_003002: c.A305G', 'Mutation', 'rs104894302', (88, 106)) 51181 32948195 This variant is described in the ClinVar database as a likely pathogenic germline one and has been found in malignant paraganglioma. ('glioma', 'Phenotype', 'HP:0009733', (125, 131)) ('malignant paraganglioma', 'Disease', (108, 131)) ('variant', 'Var', (5, 12)) ('malignant paraganglioma', 'Disease', 'MESH:C565335', (108, 131)) ('paraganglioma', 'Phenotype', 'HP:0002668', (118, 131)) ('pathogenic', 'Reg', (62, 72)) 51182 32948195 At the same position in the SDHD gene (codon 102), a sequence change leading to an amino acid substitution of a histidine for either a leucine, a proline, or a tyrosine was also observed in individuals with paragangliomas. ('SDHD', 'Gene', (28, 32)) ('leucine', 'Chemical', 'MESH:D007930', (135, 142)) ('substitution', 'Var', (94, 106)) ('tyrosine', 'Chemical', 'MESH:D014443', (160, 168)) ('histidine', 'Chemical', 'MESH:D006639', (112, 121)) ('glioma', 'Phenotype', 'HP:0009733', (214, 220)) ('gliomas', 'Phenotype', 'HP:0009733', (214, 221)) ('paraganglioma', 'Phenotype', 'HP:0002668', (207, 220)) ('proline', 'Chemical', 'MESH:D011392', (146, 153)) ('paragangliomas', 'Disease', 'MESH:D010235', (207, 221)) ('SDHD', 'Gene', '6392', (28, 32)) ('paragangliomas', 'Phenotype', 'HP:0002668', (207, 221)) ('paragangliomas', 'Disease', (207, 221)) 51184 32948195 In VPGL, we also identified likely pathogenic variants reported in the COSMIC database for the following genes: ABCB4 (COSM1092579; endometrial and colorectal cancer), LHX8 (COSM1560500; rectum and stomach cancer), DAPK2 (COSM1678527; clear cell renal cell carcinoma), STARD10 (COSM1475880; breast cancer), and ZNF599 (COSM328007; pancreas cancer). ('pancreas cancer', 'Disease', (331, 346)) ('LHX8', 'Gene', '431707', (168, 172)) ('rectum and stomach cancer', 'Disease', 'MESH:D012004', (187, 212)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (148, 165)) ('stomach cancer', 'Phenotype', 'HP:0012126', (198, 212)) ('COSM1475880;', 'Var', (278, 290)) ('VPGL', 'Phenotype', 'HP:0002886', (3, 7)) ('clear cell renal cell carcinoma', 'Phenotype', 'HP:0006770', (235, 266)) ('STARD10', 'Gene', (269, 276)) ('COSM1560500;', 'Var', (174, 186)) ('DAPK2', 'Gene', (215, 220)) ('ABCB4', 'Gene', '5244', (112, 117)) ('breast cancer', 'Phenotype', 'HP:0003002', (291, 304)) ('cancer', 'Phenotype', 'HP:0002664', (159, 165)) ('ZNF599', 'Gene', (311, 317)) ('cancer', 'Phenotype', 'HP:0002664', (298, 304)) ('breast cancer', 'Disease', 'MESH:D001943', (291, 304)) ('colorectal cancer', 'Disease', 'MESH:D015179', (148, 165)) ('cancer', 'Phenotype', 'HP:0002664', (206, 212)) ('breast cancer', 'Disease', (291, 304)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (246, 266)) ('clear cell renal cell carcinoma', 'Disease', 'MESH:C538614', (235, 266)) ('variants', 'Var', (46, 54)) ('colorectal cancer', 'Disease', (148, 165)) ('DAPK2', 'Gene', '23604', (215, 220)) ('VPGL', 'Chemical', '-', (3, 7)) ('cancer', 'Phenotype', 'HP:0002664', (340, 346)) ('LHX8', 'Gene', (168, 172)) ('pancreas cancer', 'Disease', 'MESH:D010190', (331, 346)) ('ZNF599', 'Gene', '148103', (311, 317)) ('COSM1678527;', 'Var', (222, 234)) ('clear cell renal cell carcinoma', 'Disease', (235, 266)) ('ABCB4', 'Gene', (112, 117)) ('pancreas cancer', 'Phenotype', 'HP:0002894', (331, 346)) ('STARD10', 'Gene', '10809', (269, 276)) ('carcinoma', 'Phenotype', 'HP:0030731', (257, 266)) 51187 32948195 The proto-oncogene ROS1 belongs to the subfamily of tyrosine kinase insulin receptor genes; ROS1 fusions were found in a variety of tumors. ('ROS1', 'Gene', (92, 96)) ('found', 'Reg', (110, 115)) ('fusions', 'Var', (97, 104)) ('ROS1', 'Gene', '6098', (92, 96)) ('tyrosine kinase', 'Gene', '7294', (52, 67)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('tumors', 'Phenotype', 'HP:0002664', (132, 138)) ('tumors', 'Disease', (132, 138)) ('ROS1', 'Gene', (19, 23)) ('tumors', 'Disease', 'MESH:D009369', (132, 138)) ('ROS1', 'Gene', '6098', (19, 23)) ('tyrosine kinase', 'Gene', (52, 67)) 51188 32948195 The protein product of the SETD3 gene participates in lysine degradation and chromatin organization; alterations in this gene are associated with renal cell carcinoma according to the MalaCards database. ('renal cell carcinoma', 'Disease', (146, 166)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (146, 166)) ('SETD3', 'Gene', '84193', (27, 32)) ('alterations', 'Var', (101, 112)) ('chromatin organization', 'MPA', (77, 99)) ('lysine degradation', 'MPA', (54, 72)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (146, 166)) ('SETD3', 'Gene', (27, 32)) ('lysine', 'Chemical', 'MESH:D008239', (54, 60)) ('carcinoma', 'Phenotype', 'HP:0030731', (157, 166)) ('participates', 'Reg', (38, 50)) ('associated', 'Reg', (130, 140)) 51194 32948195 A Matas test made to the outpatient was positive: Clamping the CCA caused retrograde blood flow in the supratrochlear artery. ('retrograde blood flow', 'MPA', (74, 95)) ('outpatient', 'Species', '9606', (25, 35)) ('Clamping', 'Var', (50, 58)) 51198 32948195 In this patient, we found a pathogenic stop-gain mutation NM_003000: c.C79T, p.R27X (chr1: 17371377, rs74315369) in the SDHB gene. ('p.R27X', 'Mutation', 'rs74315369', (77, 83)) ('rs74315369', 'Mutation', 'rs74315369', (101, 111)) ('SDHB', 'Gene', '6390', (120, 124)) ('c.C79T', 'Var', (69, 75)) ('NM_003000: c.C79T', 'Mutation', 'rs74315369', (58, 75)) ('rs74315369', 'Var', (101, 111)) ('p.R27X', 'Var', (77, 83)) ('patient', 'Species', '9606', (8, 15)) ('SDHB', 'Gene', (120, 124)) ('pathogenic', 'Reg', (28, 38)) 51201 32948195 In this patient's VPGL, we first identified likely pathogenic variants in a number of genes that have previously been found in other tumors according to the COSMIC database: VSIG10 (COSM935687; endometrial cancer), MRGPRX1 (COSM3687222; colon and lung cancer), DUSP27 (COSM144660; diffuse large B cell lymphoma), and C10orf88 (COSM3686556; colon cancer). ('DUSP27', 'Gene', (261, 267)) ('MRGPRX1', 'Gene', '259249', (215, 222)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('C10orf88', 'Gene', '80007', (317, 325)) ('patient', 'Species', '9606', (8, 15)) ('colon cancer', 'Disease', (340, 352)) ('VPGL', 'Phenotype', 'HP:0002886', (18, 22)) ('tumors', 'Phenotype', 'HP:0002664', (133, 139)) ('B cell lymphoma', 'Phenotype', 'HP:0012191', (295, 310)) ('colon and lung cancer', 'Disease', 'MESH:D008175', (237, 258)) ('DUSP27', 'Gene', '92235', (261, 267)) ('lung cancer', 'Phenotype', 'HP:0100526', (247, 258)) ('endometrial cancer', 'Phenotype', 'HP:0012114', (194, 212)) ('lymphoma', 'Phenotype', 'HP:0002665', (302, 310)) ('large B cell', 'Phenotype', 'HP:0005404', (289, 301)) ('B cell lymphoma', 'Disease', 'MESH:D016393', (295, 310)) ('B cell lymphoma', 'Disease', (295, 310)) ('cancer', 'Phenotype', 'HP:0002664', (206, 212)) ('tumors', 'Disease', (133, 139)) ('VSIG10', 'Gene', '54621', (174, 180)) ('endometrial cancer', 'Disease', (194, 212)) ('colon cancer', 'Phenotype', 'HP:0003003', (340, 352)) ('cancer', 'Phenotype', 'HP:0002664', (252, 258)) ('COSM3687222', 'Var', (224, 235)) ('cancer', 'Phenotype', 'HP:0002664', (346, 352)) ('C10orf88', 'Gene', (317, 325)) ('endometrial cancer', 'Disease', 'MESH:D016889', (194, 212)) ('COSM3686556;', 'Var', (327, 339)) ('COSM144660;', 'Var', (269, 280)) ('VPGL', 'Chemical', '-', (18, 22)) ('tumors', 'Disease', 'MESH:D009369', (133, 139)) ('variants', 'Var', (62, 70)) ('colon cancer', 'Disease', 'MESH:D015179', (340, 352)) ('MRGPRX1', 'Gene', (215, 222)) ('VSIG10', 'Gene', (174, 180)) 51209 32948195 Using the whole exome-sequencing, a missense mutation in the SDHD gene, NM_003002: c.A305G, p.H102R (chr11: 111959726, rs104894302), was determined in the VPGL (Additional file 1). ('p.H102R', 'Var', (92, 99)) ('SDHD', 'Gene', '6392', (61, 65)) ('VPGL', 'Chemical', '-', (155, 159)) ('rs104894302', 'Mutation', 'rs104894302', (119, 130)) ('SDHD', 'Gene', (61, 65)) ('p.H102R', 'Mutation', 'rs104894302', (92, 99)) ('NM_003002: c.A305G', 'Mutation', 'rs104894302', (72, 90)) ('VPGL', 'Phenotype', 'HP:0002886', (155, 159)) ('c.A305G', 'Var', (83, 90)) 51211 32948195 According to the COSMIC database, we found likely pathogenic variants that were earlier detected in other malignancies: TLL1 (COSM1671424; colorectal cancer), CDH8 (COSM972084; endometrial, pancreatic, and skin cancer), ANAPC5 (COSM936016; endometrial cancer), ACAN (COSM3690591, COSM3690590; colon cancer), C7orf72 (COSM3698459; colon cancer), and ZNF599 (COSM328007; pancreatic cancer). ('malignancies', 'Disease', 'MESH:D009369', (106, 118)) ('pancreatic cancer', 'Phenotype', 'HP:0002894', (369, 386)) ('C7orf72', 'Gene', '100130988', (308, 315)) ('colon cancer', 'Disease', (293, 305)) ('cancer', 'Phenotype', 'HP:0002664', (211, 217)) ('TLL1', 'Gene', (120, 124)) ('malignancies', 'Disease', (106, 118)) ('COSM3690591', 'Var', (267, 278)) ('ZNF599', 'Gene', '148103', (349, 355)) ('skin cancer', 'Disease', 'MESH:D012878', (206, 217)) ('ACAN', 'Gene', '176', (261, 265)) ('ANAPC5', 'Gene', '51433', (220, 226)) ('ANAPC5', 'Gene', (220, 226)) ('colon cancer', 'Disease', (330, 342)) ('cancer', 'Phenotype', 'HP:0002664', (336, 342)) ('TLL1', 'Gene', '7092', (120, 124)) ('CDH8', 'Gene', (159, 163)) ('colon cancer', 'Phenotype', 'HP:0003003', (293, 305)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (139, 156)) ('ACAN', 'Gene', (261, 265)) ('pancreatic cancer', 'Disease', 'MESH:D010190', (369, 386)) ('cancer', 'Phenotype', 'HP:0002664', (150, 156)) ('C7orf72', 'Gene', (308, 315)) ('endometrial cancer', 'Phenotype', 'HP:0012114', (240, 258)) ('CDH8', 'Gene', '1006', (159, 163)) ('COSM3698459;', 'Var', (317, 329)) ('COSM3690590', 'Var', (280, 291)) ('skin cancer', 'Disease', (206, 217)) ('pancreatic cancer', 'Disease', (369, 386)) ('cancer', 'Phenotype', 'HP:0002664', (252, 258)) ('colon cancer', 'Phenotype', 'HP:0003003', (330, 342)) ('endometrial cancer', 'Disease', (240, 258)) ('colon cancer', 'Disease', 'MESH:D015179', (293, 305)) ('ZNF599', 'Gene', (349, 355)) ('endometrial cancer', 'Disease', 'MESH:D016889', (240, 258)) ('colorectal cancer', 'Disease', 'MESH:D015179', (139, 156)) ('skin cancer', 'Phenotype', 'HP:0008069', (206, 217)) ('cancer', 'Phenotype', 'HP:0002664', (299, 305)) ('colon cancer', 'Disease', 'MESH:D015179', (330, 342)) ('variants', 'Var', (61, 69)) ('colorectal cancer', 'Disease', (139, 156)) 51212 32948195 Additionally, likely pathogenic variants were revealed in well-known tumor-associated genes. ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('tumor', 'Disease', (69, 74)) ('variants', 'Var', (32, 40)) ('tumor', 'Disease', 'MESH:D009369', (69, 74)) ('pathogenic', 'Reg', (21, 31)) 51213 32948195 For example, variant NM_004996: c.C3901T, p.R1301C (chr16: 16225727, rs201533167) was detected in the ABCC1 gene; this variant seems to be pathogenic according to all the prediction tools used for analysis. ('ABCC1', 'Gene', (102, 107)) ('rs201533167', 'Var', (69, 80)) ('p.R1301C', 'Var', (42, 50)) ('pathogenic', 'Reg', (139, 149)) ('p.R1301C', 'Mutation', 'rs201533167', (42, 50)) ('c.C3901T', 'Var', (32, 40)) ('NM_004996: c.C3901T', 'Mutation', 'rs201533167', (21, 40)) ('ABCC1', 'Gene', '4363', (102, 107)) ('rs201533167', 'Mutation', 'rs201533167', (69, 80)) 51215 32948195 The ALDH1L1 gene, in which we found the likely pathogenic variant NM_012190: c.G68A, p.G23D (chr3: 125879755, rs143122118), is a potential tumor suppressor gene, encoding for a protein involved in folate metabolism. ('p.G23D', 'Mutation', 'rs143122118', (85, 91)) ('tumor', 'Disease', 'MESH:D009369', (139, 144)) ('folate', 'Chemical', 'MESH:D005492', (197, 203)) ('ALDH1L1', 'Gene', (4, 11)) ('NM_012190: c.G68A', 'Mutation', 'rs143122118', (66, 83)) ('NM_012190', 'Gene', (66, 75)) ('ALDH1L1', 'Gene', '10840', (4, 11)) ('tumor', 'Phenotype', 'HP:0002664', (139, 144)) ('tumor', 'Disease', (139, 144)) ('pathogenic', 'Reg', (47, 57)) ('p.G23D', 'Var', (85, 91)) ('rs143122118', 'Mutation', 'rs143122118', (110, 121)) ('c.G68A', 'Var', (77, 83)) 51216 32948195 A likely pathogenic variant NM_007194: c.T1091C, p.I364T (chr22: 29092893, rs774179198) was revealed in the CHEK2 gene, which is commonly mutated in hereditary cancer. ('rs774179198', 'Mutation', 'rs774179198', (75, 86)) ('pathogenic', 'Reg', (9, 19)) ('NM_007194: c.T1091C', 'Mutation', 'rs774179198', (28, 47)) ('CHEK2', 'Gene', '11200', (108, 113)) ('hereditary cancer', 'Disease', 'MESH:D009369', (149, 166)) ('p.I364T', 'Var', (49, 56)) ('CHEK2', 'Gene', (108, 113)) ('p.I364T', 'Mutation', 'rs774179198', (49, 56)) ('hereditary cancer', 'Disease', (149, 166)) ('cancer', 'Phenotype', 'HP:0002664', (160, 166)) ('c.T1091C', 'Var', (39, 47)) ('rs774179198', 'Var', (75, 86)) 51217 32948195 In COL4A1, a variant NM_001845: c.G4442A, p.R1481Q (chr13: 110814597, rs376607450) was observed. ('NM_001845: c.G4442A', 'Mutation', 'rs376607450', (21, 40)) ('p.R1481Q', 'Mutation', 'rs376607450', (42, 50)) ('rs376607450', 'Mutation', 'rs376607450', (70, 81)) ('COL4A1', 'Gene', (3, 9)) ('c.G4442A', 'Var', (32, 40)) ('rs376607450', 'Var', (70, 81)) ('NM_001845: c.G4442A', 'Var', (21, 40)) ('COL4A1', 'Gene', '1282', (3, 9)) 51219 32948195 In the MADD gene, a novel stop-gain variant NM_003682: c.C2077T, p.Q693X (chr11: 47306036) was found. ('NM_003682: c.C2077T', 'Var', (44, 63)) ('p.Q693X', 'Var', (65, 72)) ('MADD', 'Gene', '8567', (7, 11)) ('MADD', 'Gene', (7, 11)) ('p.Q693X', 'Mutation', 'p.Q693X', (65, 72)) ('NM_003682: c.C2077T', 'Mutation', 'c.2077C>T', (44, 63)) 51221 32948195 In this patient's VPGL, we also observed a variant NM_015641: c.G1123A, p.V375M (chr7: 115897393, rs202205760) in TES, a tumor suppressor gene involved in the regulation of tumorigenesis, angiogenesis, and metastasis. ('TES', 'Gene', (114, 117)) ('NM_015641: c.G1123A', 'Var', (51, 70)) ('VPGL', 'Chemical', '-', (18, 22)) ('tumor', 'Disease', 'MESH:D009369', (173, 178)) ('c.G1123A', 'Var', (62, 70)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('TES', 'Chemical', 'MESH:C004551', (114, 117)) ('tumor', 'Disease', (121, 126)) ('p.V375M', 'Mutation', 'rs202205760', (72, 79)) ('rs202205760', 'Var', (98, 109)) ('tumor', 'Disease', (173, 178)) ('rs202205760', 'Mutation', 'rs202205760', (98, 109)) ('tumor', 'Phenotype', 'HP:0002664', (173, 178)) ('patient', 'Species', '9606', (8, 15)) ('NM_015641: c.G1123A', 'Mutation', 'rs202205760', (51, 70)) ('p.V375M', 'Var', (72, 79)) ('VPGL', 'Phenotype', 'HP:0002886', (18, 22)) ('tumor', 'Disease', 'MESH:D009369', (121, 126)) 51222 32948195 Additionally, a likely pathogenic variant NM_017672: c.C1337G, p.A446G (chr15: 50916466) in the TRPM7 gene was found. ('TRPM7', 'Gene', (96, 101)) ('p.A446G', 'Mutation', 'p.A446G', (63, 70)) ('p.A446G', 'Var', (63, 70)) ('TRPM7', 'Gene', '54822', (96, 101)) ('NM_017672: c.C1337G', 'Mutation', 'c.1337C>G', (42, 61)) ('pathogenic', 'Reg', (23, 33)) 51226 32948195 In 6 of them, we revealed the existence of pathogenic/likely pathogenic variants of genes encoding for components of the SDH complex (SDHB, SDHD, SDHAF3, and SDHAF4), confirming their high mutation frequency not only in paragangliomas and pheochromocytomas but also in VPGLs as distinct tumor types. ('SDH', 'Gene', '6390', (121, 124)) ('SDHAF3', 'Gene', (146, 152)) ('SDH', 'Gene', (140, 143)) ('SDHB', 'Gene', '6390', (134, 138)) ('SDH', 'Gene', '6390', (158, 161)) ('pathogenic', 'CPA', (61, 71)) ('SDH', 'Gene', (146, 149)) ('paraganglioma', 'Phenotype', 'HP:0002668', (220, 233)) ('glioma', 'Phenotype', 'HP:0009733', (227, 233)) ('VPGL', 'Chemical', '-', (269, 273)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (239, 256)) ('SDH', 'Gene', (121, 124)) ('SDHAF4', 'Gene', (158, 164)) ('SDHB', 'Gene', (134, 138)) ('tumor', 'Disease', (287, 292)) ('SDH', 'Gene', '6390', (134, 137)) ('SDH', 'Gene', (158, 161)) ('tumor', 'Disease', 'MESH:D009369', (287, 292)) ('SDHAF4', 'Gene', '135154', (158, 164)) ('variants', 'Var', (72, 80)) ('paragangliomas', 'Phenotype', 'HP:0002668', (220, 234)) ('SDHD', 'Gene', '6392', (140, 144)) ('VPGL', 'Phenotype', 'HP:0002886', (269, 273)) ('SDH', 'Gene', '6390', (140, 143)) ('gliomas', 'Phenotype', 'HP:0009733', (227, 234)) ('pathogenic/likely', 'Reg', (43, 60)) ('SDH', 'Gene', (134, 137)) ('SDH', 'Gene', '6390', (146, 149)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (239, 255)) ('SDHD', 'Gene', (140, 144)) ('tumor', 'Phenotype', 'HP:0002664', (287, 292)) ('paragangliomas and pheochromocytomas', 'Disease', 'MESH:D010673', (220, 256)) ('SDHAF3', 'Gene', '57001', (146, 152)) 51227 32948195 Moreover, likely pathogenic variants were identified in different tumor-associated genes as well as variants that have previously been found in common tumors, such as lung, colorectal, endometrial, and renal cancers. ('variants', 'Var', (28, 36)) ('tumors', 'Phenotype', 'HP:0002664', (151, 157)) ('cancer', 'Phenotype', 'HP:0002664', (208, 214)) ('lung', 'Disease', (167, 171)) ('endometrial', 'Disease', (185, 196)) ('renal cancers', 'Disease', (202, 215)) ('cancers', 'Phenotype', 'HP:0002664', (208, 215)) ('tumor', 'Phenotype', 'HP:0002664', (151, 156)) ('tumor', 'Disease', (66, 71)) ('tumors', 'Disease', (151, 157)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) ('colorectal', 'Disease', (173, 183)) ('tumors', 'Disease', 'MESH:D009369', (151, 157)) ('pathogenic', 'Reg', (17, 27)) ('renal cancers', 'Disease', 'MESH:D007680', (202, 215)) ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('variants', 'Var', (100, 108)) ('tumor', 'Disease', (151, 156)) ('colorectal', 'Disease', 'MESH:D015179', (173, 183)) ('tumor', 'Disease', 'MESH:D009369', (151, 156)) 51228 32948195 Our results indicate a high heterogeneity among VPGLs that is supported by a wide number of identified pathogenic/likely pathogenic variants in different genes (besides mutations in SDHx/SDHAF1-4 genes) in each patient. ('SDHAF1', 'Gene', (187, 193)) ('SDHAF1', 'Gene', '644096', (187, 193)) ('SDH', 'Gene', (182, 185)) ('pathogenic', 'CPA', (121, 131)) ('VPGL', 'Chemical', '-', (48, 52)) ('SDH', 'Gene', '6390', (187, 190)) ('VPGL', 'Phenotype', 'HP:0002886', (48, 52)) ('variants', 'Var', (132, 140)) ('pathogenic/likely', 'Reg', (103, 120)) ('SDH', 'Gene', (187, 190)) ('SDH', 'Gene', '6390', (182, 185)) ('patient', 'Species', '9606', (211, 218)) 51248 31146085 Up to one-third of patients with PPGLs have germline DNA mutations, including mutations in succinate dehydrogenase complex subunit B or D (SDHB or SDHD) associated with the hereditary paraganglioma syndrome 4 and 1, respectively, RET mutations leading to multiple endocrine neoplasia 2 (MEN2), germline VHL gene mutation causing von Hippel-Lindau (VHL) disease, NF1 mutation causing neurofibromatosis type 1, and others. ('VHL', 'Gene', '7428', (303, 306)) ('von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (329, 360)) ('neoplasia', 'Phenotype', 'HP:0002664', (274, 283)) ('neurofibromatosis type 1', 'Gene', '4763', (383, 407)) ('endocrine neoplasia', 'Disease', 'MESH:D009377', (264, 283)) ('RET', 'Gene', '5979', (230, 233)) ('PPGLs', 'Chemical', '-', (33, 38)) ('VHL', 'Gene', '7428', (348, 351)) ('NF1', 'Gene', '4763', (362, 365)) ('hereditary paraganglioma syndrome', 'Disease', (173, 206)) ('mutations', 'Var', (78, 87)) ('succinate dehydrogenase complex subunit B', 'Gene', (91, 132)) ('succinate dehydrogenase complex subunit B', 'Gene', '6390', (91, 132)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (264, 283)) ('NF1', 'Gene', (362, 365)) ('patients', 'Species', '9606', (19, 27)) ('SDHB', 'Gene', '6390', (139, 143)) ('RET', 'Gene', (230, 233)) ('SDHD', 'Gene', '6392', (147, 151)) ('mutations', 'Var', (234, 243)) ('neurofibromatosis type 1', 'Gene', (383, 407)) ('leading to', 'Reg', (244, 254)) ('VHL', 'Gene', (303, 306)) ('hereditary paraganglioma syndrome', 'Disease', 'MESH:D061325', (173, 206)) ('endocrine neoplasia', 'Disease', (264, 283)) ('SDHB', 'Gene', (139, 143)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (383, 400)) ('paraganglioma', 'Phenotype', 'HP:0002668', (184, 197)) ('associated', 'Reg', (153, 163)) ('SDHD', 'Gene', (147, 151)) ('VHL', 'Gene', (348, 351)) 51252 31146085 In fact, there are currently no reliable clinical or laboratory tests to predict malignancy, although some positive associations have been shown with germline SDHB mutation, extra-adrenal site of disease, persistent postoperative hypertension, and tumor diameter greater than 5 cm. ('SDHB', 'Gene', '6390', (159, 163)) ('tumor', 'Disease', (248, 253)) ('hypertension', 'Disease', 'MESH:D006973', (230, 242)) ('SDHB', 'Gene', (159, 163)) ('extra-adrenal site', 'Disease', (174, 192)) ('hypertension', 'Disease', (230, 242)) ('mutation', 'Var', (164, 172)) ('hypertension', 'Phenotype', 'HP:0000822', (230, 242)) ('tumor', 'Disease', 'MESH:D009369', (248, 253)) ('malignancy', 'Disease', 'MESH:D009369', (81, 91)) ('tumor', 'Phenotype', 'HP:0002664', (248, 253)) ('malignancy', 'Disease', (81, 91)) 51255 31146085 Because multiple studies have demonstrated a link between alteration in miRNAs and the development of cancer, miRNA profiling has been investigated as a potential diagnostic, prognostic, and therapeutic tool in a wide range of cancers (e.g., thyroid, lung, breast, cervical, soft tissue sarcoma, and adrenocortical tumors). ('cervical', 'Disease', (265, 273)) ('cancer', 'Disease', 'MESH:D009369', (102, 108)) ('adrenocortical tumors', 'Disease', 'MESH:D018268', (300, 321)) ('cancer', 'Disease', 'MESH:D009369', (227, 233)) ('sarcoma', 'Phenotype', 'HP:0100242', (287, 294)) ('tumors', 'Phenotype', 'HP:0002664', (315, 321)) ('alteration', 'Var', (58, 68)) ('tumor', 'Phenotype', 'HP:0002664', (315, 320)) ('cancers', 'Disease', 'MESH:D009369', (227, 234)) ('adrenocortical tumors', 'Disease', (300, 321)) ('lung', 'Disease', (251, 255)) ('breast', 'Disease', (257, 263)) ('cancer', 'Disease', (102, 108)) ('thyroid', 'Disease', (242, 249)) ('cancer', 'Disease', (227, 233)) ('soft tissue sarcoma', 'Phenotype', 'HP:0030448', (275, 294)) ('cancer', 'Phenotype', 'HP:0002664', (102, 108)) ('cancer', 'Phenotype', 'HP:0002664', (227, 233)) ('sarcoma', 'Disease', 'MESH:D012509', (287, 294)) ('sarcoma', 'Disease', (287, 294)) ('cancers', 'Phenotype', 'HP:0002664', (227, 234)) ('cancers', 'Disease', (227, 234)) 51256 31146085 A comprehensive miRNA analysis of benign and malignant pheochromocytoma tumors by Patterson et al demonstrated statistically significant higher expression of miR-483-5p, miR-183, and miR-101 in malignant samples, suggesting that these markers can serve as a diagnostic tool. ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('miR-183', 'Gene', '406959', (170, 177)) ('miR-183', 'Gene', (170, 177)) ('miR-101', 'Var', (183, 190)) ('expression', 'MPA', (144, 154)) ('malignant pheochromocytoma tumors', 'Disease', 'MESH:D010673', (45, 78)) ('higher', 'PosReg', (137, 143)) ('miR-483', 'Gene', '619552', (158, 165)) ('tumors', 'Phenotype', 'HP:0002664', (72, 78)) ('malignant pheochromocytoma tumors', 'Disease', (45, 78)) ('miR-483', 'Gene', (158, 165)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (55, 71)) 51289 31146085 Germline mutation status was compared as individual mutations compared to no germline mutation and as SDHB mutation versus all other germline mutations versus no germline mutation. ('SDHB', 'Gene', '6390', (102, 106)) ('mutation', 'Var', (107, 115)) ('SDHB', 'Gene', (102, 106)) 51295 31146085 MicroRNA-210 has been associated with PPGLs, SDHB mutation, and hypoxia. ('hypoxia', 'Disease', (64, 71)) ('hypoxia', 'Disease', 'MESH:D000860', (64, 71)) ('MicroRNA-210', 'Gene', '406992', (0, 12)) ('PPGLs', 'Chemical', '-', (38, 43)) ('SDHB', 'Gene', '6390', (45, 49)) ('SDHB', 'Gene', (45, 49)) ('MicroRNA-210', 'Gene', (0, 12)) ('associated', 'Reg', (22, 32)) ('mutation', 'Var', (50, 58)) ('PPGLs', 'Disease', (38, 43)) 51299 31146085 Although there is currently no reliable method to predict malignancy, a few positive associations have been shown with increased age at time of diagnosis, SDHB mutation, extra-adrenal site of disease, persistent postoperative hypertension, and a tumor size greater than 5 cm. ('mutation', 'Var', (160, 168)) ('malignancy', 'Disease', 'MESH:D009369', (58, 68)) ('hypertension', 'Disease', 'MESH:D006973', (226, 238)) ('SDHB', 'Gene', (155, 159)) ('malignancy', 'Disease', (58, 68)) ('tumor', 'Disease', 'MESH:D009369', (246, 251)) ('hypertension', 'Disease', (226, 238)) ('hypertension', 'Phenotype', 'HP:0000822', (226, 238)) ('tumor', 'Phenotype', 'HP:0002664', (246, 251)) ('tumor', 'Disease', (246, 251)) ('SDHB', 'Gene', '6390', (155, 159)) 51304 31146085 MicroRNAs have been found to facilitate tumor growth, invasion, angiogenesis, and immune evasion through the posttranscriptional regulation of various proteins. ('MicroRNAs', 'Var', (0, 9)) ('proteins', 'Protein', (151, 159)) ('invasion', 'CPA', (54, 62)) ('immune evasion', 'MPA', (82, 96)) ('angiogenesis', 'CPA', (64, 76)) ('tumor', 'Disease', 'MESH:D009369', (40, 45)) ('facilitate', 'PosReg', (29, 39)) ('posttranscriptional', 'MPA', (109, 128)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('tumor', 'Disease', (40, 45)) 51306 31146085 Some studies have profiled miRNA expression in patients with PPGLs, including miR-15a, miR-16, miR-483-5p, miR-183, miR-101, miR-139, miR-541, and miR-765. ('miR-183', 'Gene', '406959', (107, 114)) ('patients', 'Species', '9606', (47, 55)) ('miR-16', 'Gene', (87, 93)) ('miRNA expression', 'MPA', (27, 43)) ('miR-139', 'Gene', (125, 132)) ('miR-101', 'Var', (116, 123)) ('miR-183', 'Gene', (107, 114)) ('miR-541', 'Gene', (134, 141)) ('miR-483', 'Gene', (95, 102)) ('miR-15a', 'Gene', '406948', (78, 85)) ('miR-16', 'Gene', '51573', (87, 93)) ('miR-541', 'Gene', '100126308', (134, 141)) ('miR-483', 'Gene', '619552', (95, 102)) ('profiled', 'Reg', (18, 26)) ('miR-765', 'Gene', (147, 154)) ('PPGLs', 'Chemical', '-', (61, 66)) ('miR-765', 'Gene', '768220', (147, 154)) ('miR-15a', 'Gene', (78, 85)) ('miR-139', 'Gene', '406931', (125, 132)) 51312 31146085 Finally, using The Cancer Genome Atlas, Fishbein et al found that overexpression of miR-210 in primary PPGL tissue was associated with SDHB and VHL germline mutations and more aggressive disease. ('aggressive disease', 'Disease', (176, 194)) ('Cancer', 'Disease', (19, 25)) ('SDHB', 'Gene', '6390', (135, 139)) ('germline mutations', 'Var', (148, 166)) ('Cancer', 'Phenotype', 'HP:0002664', (19, 25)) ('Cancer', 'Disease', 'MESH:D009369', (19, 25)) ('miR-210', 'Gene', (84, 91)) ('miR-210', 'Gene', '406992', (84, 91)) ('SDHB', 'Gene', (135, 139)) ('VHL', 'Gene', (144, 147)) ('aggressive disease', 'Disease', 'MESH:D001523', (176, 194)) ('overexpression', 'PosReg', (66, 80)) ('VHL', 'Gene', '7428', (144, 147)) ('associated', 'Reg', (119, 129)) 51339 32125009 PPGL-induced TS was characterized by more global ballooning's pattern (22/104, 21.2% vs 3/49, 6.1%, P = 0.02), and lower left ventricular ejection fraction (25.54 +- 11.3 vs 31.82 +- 9.93, P = 0.0072) compared to exogenous catecholamine-induced TS. ('catecholamine', 'Chemical', 'MESH:D002395', (223, 236)) ('left ventricular ejection fraction', 'MPA', (121, 155)) ('PPGL-', 'Chemical', '-', (0, 5)) ('lower left ventricular ejection', 'Phenotype', 'HP:0005162', (115, 146)) ('PPGL-induced', 'Var', (0, 12)) ('lower', 'NegReg', (115, 120)) ('TS', 'Phenotype', 'HP:0011665', (245, 247)) ('TS', 'Phenotype', 'HP:0011665', (13, 15)) 51381 32125009 Death occurred in 3.7% (n = 4) of the patients with PPGL-, 4% (n = 2) with exogenous catecholamine-induced TS. ('TS', 'Phenotype', 'HP:0011665', (107, 109)) ('Death', 'Disease', 'MESH:D003643', (0, 5)) ('Death', 'Disease', (0, 5)) ('PPGL-', 'Var', (52, 57)) ('PPGL-', 'Chemical', '-', (52, 57)) ('patients', 'Species', '9606', (38, 46)) ('catecholamine', 'Chemical', 'MESH:D002395', (85, 98)) 51390 32125009 Complication rates were higher in PPGL-induced TS, but this did not reach significant levels. ('Complication', 'CPA', (0, 12)) ('higher', 'PosReg', (24, 30)) ('PPGL-induced', 'Var', (34, 46)) ('PPGL-', 'Chemical', '-', (34, 39)) ('TS', 'Phenotype', 'HP:0011665', (47, 49)) 51421 28405881 Simultaneous measurement of the 3-O-methylated metabolite of dopamine, methoxytyramine (MTY), has been advocated in particular for the diagnosis of P/PGL due to an underlying mutation of the succinate dehydrogenase B (SDHB) gene which is associated with an increased rate of metastatic disease. ('succinate dehydrogenase B', 'Gene', '6390', (191, 216)) ('PGL', 'Phenotype', 'HP:0002668', (150, 153)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (71, 86)) ('MTY', 'Chemical', 'MESH:C001746', (88, 91)) ('SDHB', 'Gene', '6390', (218, 222)) ('mutation', 'Var', (175, 183)) ('SDHB', 'Gene', (218, 222)) ('P/PGL', 'Disease', (148, 153)) ('dopamine', 'Chemical', 'MESH:D004298', (61, 69)) ('3-O', 'Chemical', '-', (32, 35)) ('metastatic disease', 'Disease', (275, 293)) ('associated', 'Reg', (238, 248)) ('succinate dehydrogenase B', 'Gene', (191, 216)) 51431 28405881 P/PGL occur with an extremely low annual incidence rate of less than 10 cases per million population, and the symptomatology of these tumors is protean and often nonspecific. ('tumors', 'Phenotype', 'HP:0002664', (134, 140)) ('tumors', 'Disease', (134, 140)) ('tumors', 'Disease', 'MESH:D009369', (134, 140)) ('P/PGL', 'Var', (0, 5)) ('PGL', 'Phenotype', 'HP:0002668', (2, 5)) 51444 28837712 While the vast majority of GISTs in adults are driven by mutations in the genes encoding the KIT or PDGFRA receptor tyrosine kinases, about 85% of GISTs in children and 10-15% of GISTs in adults lack those mutations (WT GISTs). ('driven by', 'Reg', (47, 56)) ('lack', 'NegReg', (195, 199)) ('KIT', 'Gene', (93, 96)) ('WT GIST', 'Disease', (217, 224)) ('WT GIST', 'Disease', 'MESH:D046152', (217, 224)) ('children', 'Species', '9606', (156, 164)) ('PDGFRA', 'Gene', '5156', (100, 106)) ('GIST', 'Phenotype', 'HP:0100723', (179, 183)) ('PDGFRA', 'Gene', (100, 106)) ('GIST', 'Phenotype', 'HP:0100723', (27, 31)) ('GISTs', 'Disease', (27, 32)) ('GIST', 'Phenotype', 'HP:0100723', (220, 224)) ('GIST', 'Phenotype', 'HP:0100723', (147, 151)) ('mutations', 'Var', (57, 66)) 51449 28837712 In one multicenter report, SDH germline mutations were detected in 12% (4/34) of patients with WT GISTs who had no personal or family history of paraganglioma. ('paraganglioma', 'Disease', (145, 158)) ('detected', 'Reg', (55, 63)) ('GIST', 'Phenotype', 'HP:0100723', (98, 102)) ('paraganglioma', 'Disease', 'MESH:D010235', (145, 158)) ('patients', 'Species', '9606', (81, 89)) ('SDH', 'Gene', (27, 30)) ('germline mutations', 'Var', (31, 49)) ('paraganglioma', 'Phenotype', 'HP:0002668', (145, 158)) ('WT GIST', 'Disease', 'MESH:D046152', (95, 102)) ('SDH', 'Gene', '6390', (27, 30)) ('WT GIST', 'Disease', (95, 102)) 51451 28837712 The penetration of the clinical phenotype associated with SDH gene mutations is also unknown, since germline testing results for the first-degree relatives of patients with newly identified, SDH-mutated GISTs have not been reported. ('SDH', 'Gene', (58, 61)) ('patients', 'Species', '9606', (159, 167)) ('mutations', 'Var', (67, 76)) ('SDH', 'Gene', '6390', (191, 194)) ('GIST', 'Phenotype', 'HP:0100723', (203, 207)) ('SDH', 'Gene', (191, 194)) ('SDH', 'Gene', '6390', (58, 61)) 51452 28837712 However, on the basis of available evidence, the National Comprehensive Cancer Network (NCCN) recommends testing gastric WT GISTs for SDHB expression by immunohistochemistry and for germline mutations in the SDH genes. ('SDH', 'Gene', (208, 211)) ('SDH', 'Gene', (134, 137)) ('WT GIST', 'Disease', 'MESH:D046152', (121, 128)) ('SDH', 'Gene', '6390', (208, 211)) ('germline mutations', 'Var', (182, 200)) ('WT GIST', 'Disease', (121, 128)) ('SDHB', 'Gene', '6390', (134, 138)) ('Cancer', 'Phenotype', 'HP:0002664', (72, 78)) ('Cancer', 'Disease', (72, 78)) ('SDHB', 'Gene', (134, 138)) ('GIST', 'Phenotype', 'HP:0100723', (124, 128)) ('Cancer', 'Disease', 'MESH:D009369', (72, 78)) ('SDH', 'Gene', '6390', (134, 137)) 51454 28837712 Identifying a germline mutation could alert treating physicians to a presumed increased risk of GIST recurrence and paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (116, 129)) ('paraganglioma', 'Disease', (116, 129)) ('GIST recurrence', 'Disease', (96, 111)) ('GIST', 'Phenotype', 'HP:0100723', (96, 100)) ('paraganglioma', 'Disease', 'MESH:D010235', (116, 129)) ('germline mutation', 'Var', (14, 31)) 51461 26584481 A 22-year-old woman with type IIb VHL presented with signs and symptoms of acute decompensated heart failure. ('heart failure', 'Disease', (95, 108)) ('VHL', 'Disease', 'MESH:D006623', (34, 37)) ('VHL', 'Disease', (34, 37)) ('heart failure', 'Phenotype', 'HP:0001635', (95, 108)) ('woman', 'Species', '9606', (14, 19)) ('heart failure', 'Disease', 'MESH:D006333', (95, 108)) ('type IIb', 'Var', (25, 33)) 51464 26584481 Genetic analysis revealed a germline mutation (exon 3 deletion of VHL). ('VHL', 'Disease', (66, 69)) ('revealed', 'Reg', (17, 25)) ('exon 3 deletion', 'Var', (47, 62)) ('VHL', 'Disease', 'MESH:D006623', (66, 69)) 51473 26584481 We present the case of a 22-year-old woman who was diagnosed in childhood with type IIb VHL, with known multiple retinal angiomas, pancreatic cysts, and spinal and cerebellar hemangioblastomas. ('pancreatic cysts', 'Disease', 'MESH:D010181', (131, 147)) ('cerebellar hemangioblastomas', 'Disease', (164, 192)) ('pancreatic cysts', 'Phenotype', 'HP:0001737', (131, 147)) ('woman', 'Species', '9606', (37, 42)) ('retinal angiomas', 'Disease', 'MESH:D012173', (113, 129)) ('cerebellar hemangioblastomas', 'Disease', 'MESH:D018325', (164, 192)) ('cerebellar hemangioblastomas', 'Phenotype', 'HP:0006880', (164, 192)) ('retinal angiomas', 'Disease', (113, 129)) ('type IIb', 'Var', (79, 87)) ('pancreatic cysts', 'Disease', (131, 147)) ('spinal', 'Disease', (153, 159)) ('VHL', 'Disease', (88, 91)) ('VHL', 'Disease', 'MESH:D006623', (88, 91)) 51485 26584481 Genetic analysis revealed a germline mutation (exon 3 deletion) of the VHL tumor suppressor gene on the short arm of chromosome 3. ('VHL tumor', 'Disease', (71, 80)) ('revealed', 'Reg', (17, 25)) ('VHL tumor', 'Disease', 'MESH:D006623', (71, 80)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('exon', 'Var', (47, 51)) ('short arm', 'Phenotype', 'HP:0009824', (104, 113)) 51593 27746437 reported that a 50-g glucose-tolerance test showed the pattern of diabetes mellitus and the level of measured somatostatin in their case of somatostatin-secreting pheochromocytoma, other such cases predominantly reported immunostaining of somatostatin and not about diabetes. ('pheochromocytoma', 'Disease', 'MESH:D010673', (163, 179)) ('diabetes mellitus', 'Disease', (66, 83)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (163, 179)) ('diabetes', 'Disease', (66, 74)) ('diabetes mellitus', 'Disease', 'MESH:D003920', (66, 83)) ('diabetes', 'Disease', (266, 274)) ('diabetes', 'Disease', 'MESH:D003920', (66, 74)) ('diabetes', 'Disease', 'MESH:D003920', (266, 274)) ('pheochromocytoma', 'Disease', (163, 179)) ('glucose', 'Chemical', 'MESH:D005947', (21, 28)) ('immunostaining', 'Var', (221, 235)) ('diabetes mellitus', 'Phenotype', 'HP:0000819', (66, 83)) 51601 27746437 The reasons are as follows: 1) at least one-third of all patients with PPGLs have disease-causing germline mutations; 2) mutations of succinate dehydrogenase complex subunit B (SDHB) lead to metastatic disease in 40% or more of affected patients; and 3) establishing a hereditary syndrome in the proband may result in an earlier diagnosis and treatment of PPGLs and other syndromic manifestations among relatives. ('mutations', 'Var', (121, 130)) ('succinate dehydrogenase complex subunit B', 'Gene', '6390', (134, 175)) ('hereditary syndrome', 'Disease', (269, 288)) ('metastatic', 'Disease', (191, 201)) ('patients', 'Species', '9606', (57, 65)) ('SDHB', 'Gene', '6390', (177, 181)) ('SDHB', 'Gene', (177, 181)) ('disease-causing', 'Reg', (82, 97)) ('hereditary syndrome', 'Disease', 'MESH:D009386', (269, 288)) ('PPGLs', 'Disease', (356, 361)) ('lead to', 'Reg', (183, 190)) ('succinate dehydrogenase complex subunit B', 'Gene', (134, 175)) ('patients', 'Species', '9606', (237, 245)) 51631 26413481 The remaining rare categories of aldosterone producers (1%) are adrenocortical carcinoma, or ectopic production of aldosterone such as ovarian or renal source. ('aldosterone', 'Chemical', 'MESH:D000450', (115, 126)) ('aldosterone', 'Chemical', 'MESH:D000450', (33, 44)) ('adrenocortical carcinoma', 'Phenotype', 'HP:0006744', (64, 88)) ('adrenocortical carcinoma', 'Disease', (64, 88)) ('renal source', 'Disease', (146, 158)) ('ovarian', 'Disease', (135, 142)) ('ovarian', 'Disease', 'MESH:D010051', (135, 142)) ('carcinoma', 'Phenotype', 'HP:0030731', (79, 88)) ('ectopic', 'Var', (93, 100)) ('adrenocortical carcinoma', 'Disease', 'MESH:D018268', (64, 88)) 51737 26413481 Further, surgery for APA has been shown to normalize hypokalemia and improve if not normalize blood pressure. ('hypokalemia', 'Disease', 'MESH:D007008', (53, 64)) ('APA', 'Gene', (21, 24)) ('hypokalemia', 'Phenotype', 'HP:0002900', (53, 64)) ('surgery', 'Var', (9, 16)) ('improve', 'PosReg', (69, 76)) ('blood pressure', 'MPA', (94, 108)) ('hypokalemia', 'Disease', (53, 64)) 51759 26413481 Type III familial hyperaldosteronism involves a germline mutation in the gene coding for ion channel KCNJ5. ('KCNJ5', 'Gene', (101, 106)) ('hyperaldosteronism', 'Phenotype', 'HP:0000859', (18, 36)) ('involves', 'Reg', (37, 45)) ('Type III familial hyperaldosteronism', 'Disease', (0, 36)) ('Type III familial hyperaldosteronism', 'Disease', 'MESH:D003480', (0, 36)) ('KCNJ5', 'Gene', '3762', (101, 106)) ('germline mutation', 'Var', (48, 65)) 51822 26413481 Selective, competitive, short-acting alpha-blockers like doxazosin (Cardura), prazosin (Minipress) and terazosin (Hytrin) are preferred in some institutions as they are associated with less reflex tachycardia and a lower incidence of postoperative hypotension as compared to phenoxybenzamine. ('hypotension', 'Disease', (248, 259)) ('prazosin', 'Chemical', 'MESH:D011224', (78, 86)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (275, 291)) ('terazosin', 'Var', (103, 112)) ('Cardura', 'Chemical', 'MESH:D017292', (68, 75)) ('hypotension', 'Phenotype', 'HP:0002615', (248, 259)) ('tachycardia', 'Disease', 'MESH:D013610', (197, 208)) ('less', 'NegReg', (185, 189)) ('tachycardia', 'Phenotype', 'HP:0001649', (197, 208)) ('hypotension', 'Disease', 'MESH:D007022', (248, 259)) ('Hytrin', 'Chemical', 'MESH:C041226', (114, 120)) ('tachycardia', 'Disease', (197, 208)) ('terazosin', 'Chemical', 'MESH:C041226', (103, 112)) ('doxazosin', 'Chemical', 'MESH:D017292', (57, 66)) 51823 26413481 In a study, comparing the use of these different classes of alpha blockers in the preoperative management of laparoscopic resection of pheochromocytoma, phenoxybenzamine use was associated with better decrease in intra-operative hypertension at the expense of prolonged post-operative hypotension requiring the use of vasopressors. ('hypertension', 'Disease', (229, 241)) ('hypotension', 'Disease', (285, 296)) ('hypertension', 'Disease', 'MESH:D006973', (229, 241)) ('hypertension', 'Phenotype', 'HP:0000822', (229, 241)) ('pheochromocytoma', 'Disease', (135, 151)) ('phenoxybenzamine', 'Var', (153, 169)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (135, 151)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (135, 151)) ('men', 'Species', '9606', (101, 104)) ('hypotension', 'Phenotype', 'HP:0002615', (285, 296)) ('-operative hypotension', 'Phenotype', 'HP:0001278', (274, 296)) ('hypotension', 'Disease', 'MESH:D007022', (285, 296)) ('decrease', 'NegReg', (201, 209)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (153, 169)) 51836 26413481 Metyrosine helps to control blood pressure during induction of anesthesia and surgical manipulation of the tumor. ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumor', 'Disease', (107, 112)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) ('control blood pressure', 'MPA', (20, 42)) ('Metyrosine', 'Chemical', 'MESH:D019805', (0, 10)) ('Metyrosine', 'Var', (0, 10)) 51935 24274233 Preperitoneal carbondioxide inflation caused the blood pressure to increase by another 30% systolically and diastolically and manipulation of the paraganglioma resulted in a systolic and diastolic blood pressure above 230 and 100 mmHg, respectively. ('carbondioxide', 'Chemical', 'MESH:D002245', (14, 27)) ('paraganglioma', 'Disease', 'MESH:D010235', (146, 159)) ('man', 'Species', '9606', (126, 129)) ('increase', 'PosReg', (67, 75)) ('manipulation', 'Var', (126, 138)) ('paraganglioma', 'Phenotype', 'HP:0002668', (146, 159)) ('blood pressure', 'MPA', (49, 63)) ('paraganglioma', 'Disease', (146, 159)) 51967 24149047 The VHL gene is epigenetically inactivated in pheochromocytomas and abdominal paragangliomas Pheochromocytoma (PCC) and abdominal paraganglioma (PGL) are neuroendocrine tumors that present with clinical symptoms related to increased catecholamine levels. ('abdominal paragangliomas', 'Disease', 'MESH:D010235', (68, 92)) ('Pheochromocytoma', 'Disease', (93, 109)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (46, 62)) ('pheochromocytomas', 'Disease', (46, 63)) ('abdominal paragangliomas', 'Disease', (68, 92)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (46, 63)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (154, 174)) ('paraganglioma', 'Phenotype', 'HP:0002668', (78, 91)) ('epigenetically', 'Var', (16, 30)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (154, 175)) ('VHL', 'Gene', (4, 7)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (68, 91)) ('catecholamine', 'Chemical', 'MESH:D002395', (233, 246)) ('paragangliomas', 'Phenotype', 'HP:0002668', (78, 92)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (154, 175)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (46, 63)) ('PCC', 'Phenotype', 'HP:0002666', (111, 114)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (120, 143)) ('PGL', 'Phenotype', 'HP:0002668', (145, 148)) ('tumors', 'Phenotype', 'HP:0002664', (169, 175)) ('VHL', 'Gene', '7428', (4, 7)) ('catecholamine levels', 'MPA', (233, 253)) ('increased', 'PosReg', (223, 232)) ('paraganglioma', 'Phenotype', 'HP:0002668', (130, 143)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (93, 109)) ('tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('neuroendocrine tumors', 'Disease', (154, 175)) ('increased catecholamine levels', 'Phenotype', 'HP:0003334', (223, 253)) ('abdominal paraganglioma', 'Disease', (120, 143)) 51970 24149047 Aberrant RET promoter methylation was observed in two cases only. ('RET', 'Gene', '5979', (9, 12)) ('methylation', 'MPA', (22, 33)) ('Aberrant', 'Var', (0, 8)) ('RET', 'Gene', (9, 12)) 51980 24149047 Approximately one third of PCC and PGL patients carry a constitutional mutation in a predisposing gene including EGLN1 (PDH2), EPAS1 (HIF2A), KIF1Bbeta, MAX, NF1, RET, SDHA, SDHAF2 (SDH5), SDHB, SDHC, SDHD, TMEM127, and VHL. ('patients', 'Species', '9606', (39, 47)) ('RET,', 'Gene', '5979', (163, 167)) ('NF1', 'Gene', (158, 161)) ('SDHA', 'Chemical', '-', (168, 172)) ('SDHC', 'Gene', (195, 199)) ('SDHA', 'Gene', (168, 172)) ('SDH5', 'Gene', (182, 186)) ('VHL.', 'Gene', '7428', (220, 224)) ('VHL.', 'Gene', (220, 224)) ('PCC', 'Phenotype', 'HP:0002666', (27, 30)) ('EGLN1 (PDH2', 'Gene', (113, 124)) ('SDHAF2', 'Gene', (174, 180)) ('SDHA', 'Chemical', '-', (174, 178)) (', SDHB,', 'Gene', '6390', (187, 194)) ('PGL', 'Phenotype', 'HP:0002668', (35, 38)) ('SDH5', 'Gene', '54949', (182, 186)) ('mutation', 'Var', (71, 79)) ('EPAS1', 'Gene', (127, 132)) ('SDHD, TMEM', 'Gene', '6392', (201, 211)) ('NF1', 'Gene', '4763', (158, 161)) ('SDHAF2', 'Chemical', '-', (174, 180)) ('PCC', 'Disease', (27, 30)) ('PDH2', 'Gene', (120, 124)) 51982 24149047 Studies of DNA methylation have revealed CpG hypermethylator phenotypes in PGLs carrying a SDHB, or SDHx mutation as was also demonstrated in a mouse model. ('mutation', 'Var', (105, 113)) ('mouse', 'Species', '10090', (144, 149)) ('rat', 'Species', '10116', (133, 136)) ('SDHx', 'Gene', (100, 104)) ('SDHB', 'Gene', (91, 95)) ('SDHx', 'Chemical', '-', (100, 104)) ('hypermethylator phenotypes', 'MPA', (45, 71)) ('PGL', 'Phenotype', 'HP:0002668', (75, 78)) 51998 24149047 No significant correlations were found between MetI values and gender (P = 0.5), age at surgery (P = 0.65), tumor weight or size (P = 0.4), epinephrine levels (P = 0.14), norepinephrine levels (P = 0.53), dopamine levels (P = 0.7), constitutional SDHB mutations (P = 0.1) or clinical MEN 2A syndrome (P = 0.31). ('tumor', 'Disease', 'MESH:D009369', (108, 113)) ('MEN', 'Species', '9606', (284, 287)) ('epinephrine levels', 'MPA', (140, 158)) ('epinephrine', 'Chemical', 'MESH:D004837', (140, 151)) ('epinephrine', 'Chemical', 'MESH:D004837', (174, 185)) ('norepinephrine', 'Chemical', 'MESH:D009638', (171, 185)) ('SDHB', 'Gene', '6390', (247, 251)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('MetI', 'Chemical', '-', (47, 51)) ('tumor', 'Disease', (108, 113)) ('mutations', 'Var', (252, 261)) ('norepinephrine levels', 'MPA', (171, 192)) ('SDHB', 'Gene', (247, 251)) ('dopamine', 'Chemical', 'MESH:D004298', (205, 213)) ('dopamine levels', 'MPA', (205, 220)) 52005 24149047 No significant correlations were found between VHL gene expression and gender (P = 0.8 for assay 1, P = 0.5 for assay 2), age at surgery (P = 0.58 for assay 1, P = 0.73 for assay 2), epinephrine levels (P = 0.5 for both assay 1 and 2), dopamine levels (P = 0.9 for assay 1, P = 0.3 for assay 2), constitutional SDHB mutations (P = 0.1), or clinical MEN 2A syndrome (P = 0.8 for assay 1, P = 0.6 for assay 2). ('MEN', 'Species', '9606', (349, 352)) ('mutations', 'Var', (316, 325)) ('SDHB', 'Gene', '6390', (311, 315)) ('VHL', 'Gene', (47, 50)) ('SDHB', 'Gene', (311, 315)) ('epinephrine levels', 'MPA', (183, 201)) ('clinical MEN 2A syndrome', 'Disease', (340, 364)) ('dopamine', 'Chemical', 'MESH:D004298', (236, 244)) ('dopamine levels', 'MPA', (236, 251)) ('epinephrine', 'Chemical', 'MESH:D004837', (183, 194)) 52011 24149047 Given that gene silencing by promoter CpG methylation is an important epigenetic mechanism in tumorigenesis, our results indicate that VHL promoter hypermethylation could play a role in the development of PCC and PGL. ('tumor', 'Disease', 'MESH:D009369', (94, 99)) ('VHL', 'Gene', (135, 138)) ('promoter hypermethylation', 'Var', (139, 164)) ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('PCC', 'Phenotype', 'HP:0002666', (205, 208)) ('PGL', 'Phenotype', 'HP:0002668', (213, 216)) ('PCC', 'Disease', (205, 208)) ('hypermethylation', 'Var', (148, 164)) ('PGL', 'Disease', (213, 216)) ('tumor', 'Disease', (94, 99)) ('play', 'Reg', (171, 175)) ('role', 'Reg', (178, 182)) 52021 24149047 A CpG hypermethylator phenotype has been described for the PGL and SDHB as well as SDHx mutated entity. ('PGL', 'Gene', (59, 62)) ('SDHB', 'Gene', '6390', (67, 71)) ('SDHB', 'Gene', (67, 71)) ('mutated', 'Var', (88, 95)) ('PGL', 'Phenotype', 'HP:0002668', (59, 62)) ('SDHx', 'Chemical', '-', (83, 87)) 52023 24149047 Neither VHL promoter methylation nor VHL gene expression correlated with SDHB mutations and accompanying CpG island methylator phenotype (CIMP). ('CIMP', 'Chemical', '-', (138, 142)) ('VHL', 'Gene', (37, 40)) ('mutations', 'Var', (78, 87)) ('SDHB', 'Gene', '6390', (73, 77)) ('SDHB', 'Gene', (73, 77)) 52025 24149047 In summary, our results show that the VHL gene promoter is hypermethylated in pheochromocytomas and paragangliomas, accompanied by stunted gene expression, a finding that highlights the importance of VHL inactivation in the etiology of these tumors. ('gene expression', 'MPA', (139, 154)) ('tumors', 'Phenotype', 'HP:0002664', (242, 248)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (78, 94)) ('paragangliomas', 'Disease', (100, 114)) ('paragangliomas', 'Disease', 'MESH:D010235', (100, 114)) ('paragangliomas', 'Phenotype', 'HP:0002668', (100, 114)) ('VHL gene', 'Gene', (38, 46)) ('paraganglioma', 'Phenotype', 'HP:0002668', (100, 113)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (78, 95)) ('tumor', 'Phenotype', 'HP:0002664', (242, 247)) ('hypermethylated', 'Var', (59, 74)) ('tumors', 'Disease', 'MESH:D009369', (242, 248)) ('pheochromocytomas', 'Disease', (78, 95)) ('tumors', 'Disease', (242, 248)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (78, 95)) 52032 24149047 In addition, occurrence of constitutional SDHB mutations and clinical VHL, MEN 2A, and NF1 syndrome is given in Table S1. ('MEN', 'Species', '9606', (75, 78)) ('NF1 syndrome', 'Disease', 'MESH:C537392', (87, 99)) ('mutations', 'Var', (47, 56)) ('NF1 syndrome', 'Disease', (87, 99)) ('SDHB', 'Gene', '6390', (42, 46)) ('SDHB', 'Gene', (42, 46)) 52044 24149047 In short, pre-made master mix:including DNA polymerase from QIAGEN:was used to amplify 1 microl of bisulphite-treated DNA in a PCR reaction, using the following conditions: 95 C for 15 min, followed by 45 cycles of: (95 C 30 s, 56 C [all assays except SDHB, SDHC, and SDHD; 53 C] 30 s, 72 C 30 s), and 72 C for 10 min. ('SDHD', 'Gene', '6392', (271, 275)) ('SDHD', 'Gene', (271, 275)) ('bisulphite', 'Chemical', 'MESH:C042345', (99, 109)) ('95 C 30 s', 'Var', (218, 228)) 52092 23958171 However, since we were already confronted with two tumorous lesions, we sought an imaging modality with higher resolution and, taking a similar, recently published case report into account, decided to perform a whole-body somatostatine-receptor Positron-Emission-Tomography (PET) scan with [68Ga-DOTA]-TATE. ('tumorous lesions', 'Disease', (51, 67)) ('tumorous lesions', 'Disease', 'MESH:D051437', (51, 67)) ('[68Ga-DOTA]-TATE', 'Var', (290, 306)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) 52108 23958171 The ectopic ACTH-source was eventually localised by [68Ga-DOTA]-TATE-PET and was surgically removed, which led to complete remission of the hypercortisolaemic syndrome. ('ACTH', 'Chemical', '-', (12, 16)) ('hypercortisolaemic syndrome', 'Disease', 'MESH:D013577', (140, 167)) ('hypercortisolaemic syndrome', 'Disease', (140, 167)) ('[68Ga-DOTA]-TATE-PET', 'Var', (52, 72)) 52124 23224622 Important in maintaining physiological homeostasis, EPI also contributes to the etiology of numerous stress-related pathologies, including cardiovascular and neuropsychiatric disorders, immune dysfunction and even cancer. ('contributes', 'Reg', (61, 72)) ('cancer', 'Disease', (214, 220)) ('cancer', 'Disease', 'MESH:D009369', (214, 220)) ('immune dysfunction', 'Disease', (186, 204)) ('EPI', 'Var', (52, 55)) ('EPI', 'Chemical', 'MESH:D004837', (52, 55)) ('cancer', 'Phenotype', 'HP:0002664', (214, 220)) ('neuropsychiatric disorders', 'Disease', (158, 184)) ('immune dysfunction', 'Disease', 'MESH:D007154', (186, 204)) ('neuropsychiatric disorders', 'Disease', 'MESH:D001523', (158, 184)) 52135 23224622 Ionization source (ESI) parameters were further optimized by automatic flow injection analyses provided by the Analyst software package (Vers 1.51, AB Sciex) with curtain gas (30 psi), ESI voltage (5500V), temperature (600 C), gas 1 (70 psi) and gas 2 (60 psi). ('5500V', 'Var', (198, 203)) ('gas 1', 'Gene', (227, 232)) ('gas 2', 'Gene', (246, 251)) ('gas 1', 'Gene', '2619', (227, 232)) ('Ionization', 'Disease', 'MESH:D004194', (0, 10)) ('gas 2', 'Gene', '2620', (246, 251)) ('Ionization', 'Disease', (0, 10)) 52188 23282968 IMMUNOHISTOCHEMICAL LOSS OF SUCCINATE DEHYDROGENASE SUBUNIT A (SDHA) IN GASTROINTESTINAL STROMAL TUMORS (GISTS) SIGNALS SDHA GERMLINE MUTATION A subset (7-10%) of gastric GISTs is notable for the immunohistochemical loss of succinate dehydrogenase (SDH) subunit B (SDHB), which signals the loss of function of the SDH-complex consisting of mitochondrial inner membrane proteins. ('SDHB', 'Gene', (265, 269)) ('GASTROINTESTINAL STROMAL TUMORS', 'Phenotype', 'HP:0100723', (72, 103)) ('SUCCINATE DEHYDROGENASE', 'Gene', (28, 51)) ('SDH', 'Gene', (265, 268)) ('SDH', 'Gene', (314, 317)) ('succinate dehydrogenase', 'Gene', '6389', (224, 247)) ('SDH', 'Gene', (249, 252)) ('SDH', 'Gene', '6390', (120, 123)) ('SDHA', 'Gene', (120, 124)) ('SDH', 'Gene', '6390', (63, 66)) ('SDHA', 'Gene', (63, 67)) ('succinate dehydrogenase', 'Gene', (224, 247)) ('loss', 'NegReg', (216, 220)) ('SDHA', 'Gene', '6389', (120, 124)) ('SDHA', 'Gene', '6389', (63, 67)) ('SUCCINATE DEHYDROGENASE', 'Gene', '6389', (28, 51)) ('TUMORS', 'Phenotype', 'HP:0002664', (97, 103)) ('SDH', 'Gene', (120, 123)) ('SDH', 'Gene', (63, 66)) ('MUTATION', 'Var', (134, 142)) ('SDHB', 'Gene', '6390', (265, 269)) ('SDH', 'Gene', '6390', (265, 268)) ('SDH', 'Gene', '6390', (314, 317)) ('gastric', 'Disease', (163, 170)) ('SDH', 'Gene', '6390', (249, 252)) 52190 23282968 Some of these patients have germline mutations of SDH-subunits B, C, or D, known as Carney-Stratakis syndrome when combined with paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (129, 142)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (84, 109)) ('paraganglioma', 'Disease', (129, 142)) ('SDH', 'Gene', '6390', (50, 53)) ('paraganglioma', 'Disease', 'MESH:D010235', (129, 142)) ('Carney-Stratakis syndrome', 'Disease', (84, 109)) ('germline mutations', 'Var', (28, 46)) ('patients', 'Species', '9606', (14, 22)) ('SDH', 'Gene', (50, 53)) 52191 23282968 More recently, germline mutations in SDH-subunit A (SDHA) have been also reported in few patients with KIT/PDGFRA wild type GISTs. ('SDH', 'Gene', (37, 40)) ('PDGFRA', 'Gene', (107, 113)) ('SDH', 'Gene', '6390', (52, 55)) ('SDHA', 'Gene', (52, 56)) ('reported', 'Reg', (73, 81)) ('PDGFRA', 'Gene', '5156', (107, 113)) ('SDH', 'Gene', '6390', (37, 40)) ('SDH', 'Gene', (52, 55)) ('patients', 'Species', '9606', (89, 97)) ('SDHA', 'Gene', '6389', (52, 56)) ('germline mutations', 'Var', (15, 33)) 52193 23282968 Cases with available DNA were tested for SDHA, B, C, and D gene mutations using a hybridization-based custom capture next-generation sequencing assay. ('SDHA, B', 'Gene', '6389', (41, 48)) ('D gene', 'Gene', (57, 63)) ('mutations', 'Var', (64, 73)) 52196 23282968 Among 7 SDHA-negative tumors analyzed, there were 7 SDHA mutants, most germline. ('tumors', 'Phenotype', 'HP:0002664', (22, 28)) ('SDHA', 'Gene', '6389', (8, 12)) ('SDHA', 'Gene', (8, 12)) ('SDHA', 'Gene', (52, 56)) ('tumor', 'Phenotype', 'HP:0002664', (22, 27)) ('mutants', 'Var', (57, 64)) ('tumors', 'Disease', 'MESH:D009369', (22, 28)) ('tumors', 'Disease', (22, 28)) ('SDHA', 'Gene', '6389', (52, 56)) 52199 23282968 Among the 25 SDHA-positive, SDHB-negative GISTs analyzed, we identified 3 SDHA mutations (one germline), and 11 SDHB, SDHC or SDHD mutations (mostly germline), and 11 patients with no SDH mutations. ('SDHA', 'Gene', '6389', (74, 78)) ('SDH', 'Gene', (28, 31)) ('SDHB', 'Gene', (112, 116)) ('SDH', 'Gene', '6390', (184, 187)) ('SDHC', 'Gene', (118, 122)) ('SDH', 'Gene', '6390', (112, 115)) ('mutations', 'Var', (79, 88)) ('SDH', 'Gene', (74, 77)) ('SDH', 'Gene', '6390', (118, 121)) ('SDHD', 'Gene', '6392', (126, 130)) ('SDH', 'Gene', '6390', (13, 16)) ('SDHB', 'Gene', '6390', (28, 32)) ('SDH', 'Gene', (184, 187)) ('SDHA', 'Gene', (13, 17)) ('SDH', 'Gene', '6390', (126, 129)) ('SDH', 'Gene', (112, 115)) ('SDHA', 'Gene', '6389', (13, 17)) ('SDHD', 'Gene', (126, 130)) ('SDH', 'Gene', (118, 121)) ('SDHB', 'Gene', (28, 32)) ('SDHC', 'Gene', '6391', (118, 122)) ('SDH', 'Gene', '6390', (28, 31)) ('SDH', 'Gene', (13, 16)) ('SDH', 'Gene', (126, 129)) ('patients', 'Species', '9606', (167, 175)) ('SDHB', 'Gene', '6390', (112, 116)) ('SDH', 'Gene', '6390', (74, 77)) ('SDHA', 'Gene', (74, 78)) 52201 23282968 SDHA-negative GISTs comprise approximately 30% of SDHB-negative/SDH-deficient GISTs, and SDHA loss generally correlates with SDHA mutations. ('SDHA', 'Gene', '6389', (125, 129)) ('SDH-deficient', 'Disease', 'MESH:D007153', (64, 77)) ('SDHA', 'Gene', (0, 4)) ('SDHA', 'Gene', (89, 93)) ('SDHB', 'Gene', (50, 54)) ('loss', 'NegReg', (94, 98)) ('SDHA', 'Gene', (125, 129)) ('mutations', 'Var', (130, 139)) ('SDHA', 'Gene', '6389', (0, 4)) ('SDH-deficient', 'Disease', (64, 77)) ('SDHA', 'Gene', '6389', (89, 93)) ('SDHB', 'Gene', '6390', (50, 54)) 52208 23282968 A minority of patients with SDH-deficient GISTs have found to harbor germline mutations of SDHB, SDHC, or SDHD, known as the Carney-Stratakis syndrome when combined with paraganglioma. ('paraganglioma', 'Disease', 'MESH:D010235', (170, 183)) ('SDH-deficient', 'Disease', (28, 41)) ('Carney-Stratakis syndrome', 'Disease', (125, 150)) ('SDHB', 'Gene', '6390', (91, 95)) ('SDHD', 'Gene', '6392', (106, 110)) ('SDHC', 'Gene', (97, 101)) ('mutations', 'Var', (78, 87)) ('SDH-deficient', 'Disease', 'MESH:D007153', (28, 41)) ('paraganglioma', 'Phenotype', 'HP:0002668', (170, 183)) ('SDHD', 'Gene', (106, 110)) ('SDHB', 'Gene', (91, 95)) ('paraganglioma', 'Disease', (170, 183)) ('patients', 'Species', '9606', (14, 22)) ('SDHC', 'Gene', '6391', (97, 101)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (125, 150)) 52210 23282968 Recently, a small number of GISTs have been found associated with germline loss-of-function mutations of SDHA gene encoding the key catalytic component of the SDH-complex. ('SDH', 'Gene', (105, 108)) ('loss-of-function', 'NegReg', (75, 91)) ('SDH', 'Gene', '6390', (159, 162)) ('SDHA', 'Gene', '6389', (105, 109)) ('mutations', 'Var', (92, 101)) ('SDH', 'Gene', (159, 162)) ('SDH', 'Gene', '6390', (105, 108)) ('SDHA', 'Gene', (105, 109)) 52211 23282968 Such mutations have been previously detected in an abdominal catecholamine secreting paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (85, 98)) ('paraganglioma', 'Disease', (85, 98)) ('detected', 'Reg', (36, 44)) ('mutations', 'Var', (5, 14)) ('paraganglioma', 'Disease', 'MESH:D010235', (85, 98)) ('catecholamine', 'Chemical', 'MESH:D002395', (61, 74)) 52213 23282968 A significant portion of paraganglioma patients has mutations in the other SDH subunits, SDHB, SDHC, and SDHD. ('SDHC', 'Gene', (95, 99)) ('patients', 'Species', '9606', (39, 47)) ('SDHD', 'Gene', (105, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (25, 38)) ('SDH', 'Gene', '6390', (95, 98)) ('SDHB', 'Gene', (89, 93)) ('SDH', 'Gene', (105, 108)) ('SDH', 'Gene', (89, 92)) ('SDH', 'Gene', (95, 98)) ('SDHC', 'Gene', '6391', (95, 99)) ('SDH', 'Gene', '6390', (75, 78)) ('paraganglioma', 'Disease', (25, 38)) ('mutations', 'Var', (52, 61)) ('SDHD', 'Gene', '6392', (105, 109)) ('paraganglioma', 'Disease', 'MESH:D010235', (25, 38)) ('SDH', 'Gene', '6390', (105, 108)) ('SDHB', 'Gene', '6390', (89, 93)) ('SDH', 'Gene', '6390', (89, 92)) ('SDH', 'Gene', (75, 78)) 52214 23282968 In this study, we report 36 SDHA-negative gastric GISTs among 127 SDHB-negative/SDH-deficient GISTs and examine SDHA and other SDH-subunit mutations, and pathology and prognosis of these tumors. ('SDHB', 'Gene', (66, 70)) ('SDH', 'Gene', (66, 69)) ('SDH', 'Gene', (28, 31)) ('SDH', 'Gene', '6390', (112, 115)) ('SDHA', 'Gene', (112, 116)) ('SDH', 'Gene', '6390', (127, 130)) ('SDHA', 'Gene', '6389', (112, 116)) ('SDH', 'Gene', '6390', (80, 83)) ('SDH-deficient', 'Disease', (80, 93)) ('tumors', 'Phenotype', 'HP:0002664', (187, 193)) ('SDH-deficient', 'Disease', 'MESH:D007153', (80, 93)) ('SDH', 'Gene', (112, 115)) ('SDH', 'Gene', (127, 130)) ('tumor', 'Phenotype', 'HP:0002664', (187, 192)) ('tumors', 'Disease', (187, 193)) ('SDHB', 'Gene', '6390', (66, 70)) ('SDH', 'Gene', (80, 83)) ('SDH', 'Gene', '6390', (66, 69)) ('gastric GISTs', 'Disease', (42, 55)) ('SDH', 'Gene', '6390', (28, 31)) ('mutations', 'Var', (139, 148)) ('SDHA', 'Gene', (28, 32)) ('tumors', 'Disease', 'MESH:D009369', (187, 193)) ('SDHA', 'Gene', '6389', (28, 32)) 52224 23282968 SDH-subunit genes SDHA, SDHB, SDHC, and SDHD were evaluated for mutations using a hybridization-based custom capture reagent (Agilent, Inc., Santa Clara, CA) followed by sequencing on the GAIIx instrument (Illumina, Inc., San Diego, CA) according to manufacturer's protocols. ('SDHD', 'Gene', '6392', (40, 44)) ('SDH', 'Gene', '6390', (18, 21)) ('SDHA', 'Gene', (18, 22)) ('SDH', 'Gene', '6390', (40, 43)) ('SDHB', 'Gene', (24, 28)) ('SDHA', 'Gene', '6389', (18, 22)) ('SDH', 'Gene', '6390', (0, 3)) ('SDHC', 'Gene', (30, 34)) ('SDH', 'Gene', '6390', (24, 27)) ('SDHD', 'Gene', (40, 44)) ('men', 'Species', '9606', (200, 203)) ('SDH', 'Gene', (18, 21)) ('mutations', 'Var', (64, 73)) ('SDH', 'Gene', '6390', (30, 33)) ('SDH', 'Gene', (40, 43)) ('SDH', 'Gene', (0, 3)) ('SDH', 'Gene', (24, 27)) ('SDH', 'Gene', (30, 33)) ('SDHC', 'Gene', '6391', (30, 34)) ('SDHB', 'Gene', '6390', (24, 28)) 52226 23282968 The reference sequence for SDHA was NM_004168; SDHB: NM_003000; SDHC: NM_003001; and SDHD: NM_003002. ('SDHC', 'Gene', '6391', (64, 68)) ('SDHA', 'Gene', (27, 31)) ('SDHB', 'Gene', '6390', (47, 51)) ('SDHB', 'Gene', (47, 51)) ('SDHD', 'Gene', '6392', (85, 89)) ('NM_003000', 'Var', (53, 62)) ('SDHD', 'Gene', (85, 89)) ('SDHA', 'Gene', '6389', (27, 31)) ('NM_003001', 'Var', (70, 79)) ('NM_004168', 'Var', (36, 45)) ('SDHC', 'Gene', (64, 68)) 52227 23282968 A subset of SDHA mutations was further validated by TaqMan assay (Invitrogen/Life Technologies, Carlsbad, CA). ('SDHA', 'Gene', '6389', (12, 16)) ('mutations', 'Var', (17, 26)) ('SDHA', 'Gene', (12, 16)) 52232 23282968 SDHA mutations were detected in all 7 SDHA-negative tumors with available sequencing data, and 6 of them were germline mutations. ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('SDHA', 'Gene', (38, 42)) ('tumors', 'Phenotype', 'HP:0002664', (52, 58)) ('SDHA', 'Gene', (0, 4)) ('tumors', 'Disease', (52, 58)) ('mutations', 'Var', (5, 14)) ('tumors', 'Disease', 'MESH:D009369', (52, 58)) ('SDHA', 'Gene', '6389', (0, 4)) ('SDHA', 'Gene', '6389', (38, 42)) 52264 23282968 There was a strong correlation between immunohistochemically observed loss of SDHA and SDHA mutations, which were detected in all 7 patients analyzed, while only present in 3 of 25 patients with SDHA-positive, SDHB-negative GISTs. ('SDHA', 'Gene', (195, 199)) ('loss', 'NegReg', (70, 74)) ('SDHA', 'Gene', (87, 91)) ('SDHA', 'Gene', '6389', (78, 82)) ('mutations', 'Var', (92, 101)) ('patients', 'Species', '9606', (181, 189)) ('SDHA', 'Gene', '6389', (195, 199)) ('SDHB', 'Gene', '6390', (210, 214)) ('SDHB', 'Gene', (210, 214)) ('SDHA', 'Gene', (78, 82)) ('SDHA', 'Gene', '6389', (87, 91)) ('patients', 'Species', '9606', (132, 140)) 52265 23282968 On the other hand, none of these patients with SDHA-negative GISTs had SDHB, SDHC, or SDHD mutations. ('SDHA', 'Gene', (47, 51)) ('SDHC', 'Gene', (77, 81)) ('SDHD', 'Gene', (86, 90)) ('SDHC', 'Gene', '6391', (77, 81)) ('patients', 'Species', '9606', (33, 41)) ('SDHB', 'Gene', '6390', (71, 75)) ('SDHA', 'Gene', '6389', (47, 51)) ('SDHB', 'Gene', (71, 75)) ('mutations', 'Var', (91, 100)) ('SDHD', 'Gene', '6392', (86, 90)) 52266 23282968 Therefore, SDHA mutations (mostly verified as germline here) are the apparent cause for SDHA loss and destabilization of the SDH-complex, especially because bi-allelic changes with losses or somatic mutations in SDHA-locus were common and detected in most cases in this study. ('SDH', 'Gene', (88, 91)) ('SDHA', 'Gene', (212, 216)) ('SDHA', 'Gene', '6389', (11, 15)) ('loss', 'NegReg', (93, 97)) ('SDH', 'Gene', (11, 14)) ('SDH', 'Gene', (212, 215)) ('SDH', 'Gene', '6390', (125, 128)) ('SDHA', 'Gene', '6389', (88, 92)) ('mutations', 'Var', (16, 25)) ('SDHA', 'Gene', (11, 15)) ('SDH', 'Gene', '6390', (88, 91)) ('SDHA', 'Gene', '6389', (212, 216)) ('SDHA', 'Gene', (88, 92)) ('losses', 'NegReg', (181, 187)) ('SDH', 'Gene', (125, 128)) ('SDH', 'Gene', '6390', (11, 14)) ('SDH', 'Gene', '6390', (212, 215)) 52267 23282968 A previous study also showed SDHA germline mutations coupled with somatic SDHA mutations in the tumor in some cases. ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('SDHA', 'Gene', '6389', (29, 33)) ('SDHA', 'Gene', '6389', (74, 78)) ('tumor', 'Disease', (96, 101)) ('germline mutations', 'Var', (34, 52)) ('SDHA', 'Gene', (29, 33)) ('SDHA', 'Gene', (74, 78)) ('tumor', 'Disease', 'MESH:D009369', (96, 101)) ('mutations', 'Var', (79, 88)) 52268 23282968 Therefore, these SDHA alterations seem to follow a classic two hit hypothesis of tumor suppressor genes, as has been previously found for other SDH-subunit gene mutations in paragangliomas. ('SDHA', 'Gene', (17, 21)) ('SDH', 'Gene', '6390', (144, 147)) ('paraganglioma', 'Phenotype', 'HP:0002668', (174, 187)) ('paragangliomas', 'Phenotype', 'HP:0002668', (174, 188)) ('SDH', 'Gene', (17, 20)) ('SDH', 'Gene', (144, 147)) ('tumor', 'Disease', 'MESH:D009369', (81, 86)) ('alterations', 'Var', (22, 33)) ('mutations', 'Var', (161, 170)) ('SDHA', 'Gene', '6389', (17, 21)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('SDH', 'Gene', '6390', (17, 20)) ('paragangliomas', 'Disease', 'MESH:D010235', (174, 188)) ('tumor', 'Disease', (81, 86)) ('paragangliomas', 'Disease', (174, 188)) 52269 23282968 Both truncating and missense SDHA germline mutations were associated with the loss of protein expression. ('missense', 'Var', (20, 28)) ('SDHA', 'Gene', '6389', (29, 33)) ('protein expression', 'MPA', (86, 104)) ('loss', 'NegReg', (78, 82)) ('SDHA', 'Gene', (29, 33)) 52270 23282968 This is not surprising in view of most SDH-subunit loss-of-function mutations in SDHB-negative paragangliomas also being missense mutations. ('paragangliomas', 'Disease', (95, 109)) ('SDH', 'Gene', (39, 42)) ('paraganglioma', 'Phenotype', 'HP:0002668', (95, 108)) ('SDH', 'Gene', '6390', (39, 42)) ('missense', 'Var', (121, 129)) ('SDHB', 'Gene', '6390', (81, 85)) ('loss-of-function', 'NegReg', (51, 67)) ('SDH', 'Gene', '6390', (81, 84)) ('paragangliomas', 'Disease', 'MESH:D010235', (95, 109)) ('SDHB', 'Gene', (81, 85)) ('mutations', 'Var', (68, 77)) ('SDH', 'Gene', (81, 84)) ('paragangliomas', 'Phenotype', 'HP:0002668', (95, 109)) 52271 23282968 Loss of function has also been resulting from missense mutations in other tumor suppressor proteins, such as merlin, the NF2 gene product in schwannoma, and TSC1 in transitional cell carcinoma. ('missense mutations', 'Var', (46, 64)) ('merlin', 'Gene', (109, 115)) ('tumor', 'Disease', 'MESH:D009369', (74, 79)) ('carcinoma', 'Disease', 'MESH:D002277', (183, 192)) ('carcinoma', 'Phenotype', 'HP:0030731', (183, 192)) ('TSC1', 'Gene', '7248', (157, 161)) ('NF2', 'Gene', (121, 124)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('carcinoma', 'Disease', (183, 192)) ('schwannoma', 'Disease', (141, 151)) ('TSC1', 'Gene', (157, 161)) ('Loss of function', 'NegReg', (0, 16)) ('tumor', 'Disease', (74, 79)) ('schwannoma', 'Disease', 'MESH:D009442', (141, 151)) ('merlin', 'Gene', '4771', (109, 115)) ('NF2', 'Gene', '4771', (121, 124)) ('schwannoma', 'Phenotype', 'HP:0100008', (141, 151)) 52278 23282968 According to our observations, SDHA mutations in SDHB-negative (SDH-deficient) GISTs seem to be as common as other SDH-subunit mutations together. ('SDHB', 'Gene', (49, 53)) ('SDHA', 'Gene', '6389', (31, 35)) ('SDH', 'Gene', (64, 67)) ('SDH', 'Gene', '6390', (49, 52)) ('SDH', 'Gene', '6390', (64, 67)) ('SDH', 'Gene', '6390', (31, 34)) ('SDH-deficient', 'Disease', 'MESH:D007153', (64, 77)) ('SDH', 'Gene', (49, 52)) ('mutations', 'Var', (36, 45)) ('SDHA', 'Gene', (31, 35)) ('SDH', 'Gene', '6390', (115, 118)) ('SDH', 'Gene', (31, 34)) ('SDHB', 'Gene', '6390', (49, 53)) ('SDH', 'Gene', (115, 118)) ('SDH-deficient', 'Disease', (64, 77)) 52280 23282968 A caveat in the comparison of the relative frequencies of SDH-subunit gene mutations is that large deletions can escape detection in our custom capture mutation search. ('SDH', 'Gene', (58, 61)) ('mutations', 'Var', (75, 84)) ('SDH', 'Gene', '6390', (58, 61)) 52298 21663639 Both, pediatric and CT-GISTs, metastasize frequently to regional lymph nodes (29%) and are usually wild type (WT) for common KIT-/PDGFRA mutations. ('mutations', 'Var', (137, 146)) ('metastasize', 'CPA', (30, 41)) ('PDGFRA', 'Gene', (130, 136)) ('GISTs', 'Phenotype', 'HP:0100723', (23, 28)) ('PDGFRA', 'Gene', '5156', (130, 136)) 52301 21663639 The two cases of pediatric/young adult GIST without the other components of CT showed all the features of the triad: female gender, young age, multifocal antral-based gastric GIST with biphasic histological growth pattern, lymph node metastases, hypercellularity and WT status for common KIT-, PDGFRA- and B-RAF mutations. ('KIT-', 'Gene', (288, 292)) ('PDGFRA-', 'Gene', '5156', (294, 301)) ('B-RAF', 'Gene', '673', (306, 311)) ('PDGFRA-', 'Gene', (294, 301)) ('mutations', 'Var', (312, 321)) ('lymph node metastases', 'Disease', (223, 244)) ('lymph node metastases', 'Disease', 'MESH:D009362', (223, 244)) ('B-RAF', 'Gene', (306, 311)) 52313 21663639 The gastric GISTs in CT are usually multifocal, antral based and show a wild type (WT) for common mutations in receptor tyrosine kinase gene KIT and for homologue oncogene platelet-derived growth factor receptor alpha gene (PDGFRA) and they present with typical biphasic growth pattern. ('platelet-derived growth factor receptor alpha', 'Gene', '5156', (172, 217)) ('PDGFRA', 'Gene', (224, 230)) ('platelet-derived growth factor receptor alpha', 'Gene', (172, 217)) ('PDGFRA', 'Gene', '5156', (224, 230)) ('mutations', 'Var', (98, 107)) ('GISTs', 'Phenotype', 'HP:0100723', (12, 17)) 52329 21663639 Mutational analysis showed a WT for KIT (exons 9, 11, 13, 17) and PDGFRA (exons 12, 14, 18) as well as for B-RAF exon 15 V600E mutations. ('V600E', 'Mutation', 'rs113488022', (121, 126)) ('PDGFRA', 'Gene', '5156', (66, 72)) ('V600E', 'Var', (121, 126)) ('PDGFRA', 'Gene', (66, 72)) ('B-RAF', 'Gene', '673', (107, 112)) ('B-RAF', 'Gene', (107, 112)) 52330 21663639 However, further examination disclosed a rare PDGFRA exon 10 polymorphism (c. 1432 T > C; p. S478P) that is present on the DNA level but does not lead to alterations on the protein level. ('S478P', 'SUBSTITUTION', 'None', (93, 98)) ('1432 T > C', 'Var', (78, 88)) ('S478P', 'Var', (93, 98)) ('PDGFRA', 'Gene', (46, 52)) ('PDGFRA', 'Gene', '5156', (46, 52)) ('1432 T > C', 'SUBSTITUTION', 'None', (78, 88)) 52342 21663639 The tumor was WT for KIT exons 9, 11, 13 and 17, PDGFRA exons 10, 12, 14 and 18 as well as for B-RAF exon 15 mutations. ('tumor', 'Disease', (4, 9)) ('B-RAF', 'Gene', '673', (95, 100)) ('PDGFRA', 'Gene', (49, 55)) ('PDGFRA', 'Gene', '5156', (49, 55)) ('B-RAF', 'Gene', (95, 100)) ('tumor', 'Disease', 'MESH:D009369', (4, 9)) ('mutations', 'Var', (109, 118)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) 52348 21663639 The patients young age, female gender, tumor localisation, mutational status (WT for KIT, PDGFRA and B-RAF mutations), (histo)morphological growth pattern (multilobular gastric tumor, biphasic growth pattern, hypercellularity, plasmacytoid cell morphology), immunohistochemistry findings and the pattern of metastasis (lymph node and liver metastases) are consistent with the previous two cases (figure 3). ('mutations', 'Var', (107, 116)) ('multilobular gastric tumor', 'Disease', (156, 182)) ('liver metastases', 'Disease', (334, 350)) ('tumor', 'Disease', 'MESH:D009369', (39, 44)) ('PDGFRA', 'Gene', '5156', (90, 96)) ('PDGFRA', 'Gene', (90, 96)) ('tumor', 'Disease', 'MESH:D009369', (177, 182)) ('liver metastases', 'Disease', 'MESH:D009362', (334, 350)) ('gastric tumor', 'Phenotype', 'HP:0006753', (169, 182)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('tumor', 'Phenotype', 'HP:0002664', (177, 182)) ('patients', 'Species', '9606', (4, 12)) ('tumor', 'Disease', (39, 44)) ('B-RAF', 'Gene', '673', (101, 106)) ('multilobular gastric tumor', 'Disease', 'None', (156, 182)) ('tumor', 'Disease', (177, 182)) ('B-RAF', 'Gene', (101, 106)) 52351 21663639 In contrast to most of the sporadic GISTs of the adults, both CT-GISTs and pediatric GISTs are WT for common mutations of the receptor tyrosine kinase genes KIT and PDGFRA. ('GISTs', 'Phenotype', 'HP:0100723', (85, 90)) ('PDGFRA', 'Gene', '5156', (165, 171)) ('PDGFRA', 'Gene', (165, 171)) ('GISTs', 'Phenotype', 'HP:0100723', (65, 70)) ('mutations', 'Var', (109, 118)) ('KIT', 'Gene', (157, 160)) ('GISTs', 'Phenotype', 'HP:0100723', (36, 41)) 52353 21663639 Similarly, our two cases of pediatric/young adult GIST without other components of CT (case 2 and 3) showed all the features of the CT-GISTs: young age, female gender, antral-based gastric GIST, multifocal tumor growth, biphasic histological growth pattern, hypercellularity, WT status for common KIT-, PDGFRA- and B-RAF mutations and presence of lymph node metastases (table 1). ('B-RAF', 'Gene', '673', (315, 320)) ('tumor', 'Phenotype', 'HP:0002664', (206, 211)) ('lymph node metastases', 'Disease', (347, 368)) ('PDGFRA-', 'Gene', (303, 310)) ('KIT-', 'Gene', (297, 301)) ('hypercellularity', 'CPA', (258, 274)) ('B-RAF', 'Gene', (315, 320)) ('mutations', 'Var', (321, 330)) ('GISTs', 'Phenotype', 'HP:0100723', (135, 140)) ('multifocal tumor', 'Disease', (195, 211)) ('multifocal tumor', 'Disease', 'None', (195, 211)) ('PDGFRA-', 'Gene', '5156', (303, 310)) ('lymph node metastases', 'Disease', 'MESH:D009362', (347, 368)) 52358 33947839 Currently, about 70% of PPGLs can be explained by germline or somatic mutations in several broadly expressed susceptibility genes including RET, VHL, and SDHB, while for the remaining, mainly sporadic cases, the pathogenesis is still unclear. ('VHL', 'Gene', '7428', (145, 148)) ('mutations', 'Var', (70, 79)) ('explained', 'Reg', (37, 46)) ('RET', 'Gene', (140, 143)) ('PPGLs', 'Chemical', '-', (24, 29)) ('SDHB', 'Gene', (154, 158)) ('VHL', 'Gene', (145, 148)) ('PPGLs', 'Disease', (24, 29)) 52359 33947839 Even for known susceptible genes, how mutations in these mostly ubiquitous genes result in tissue-specific pathogenesis remains unanswered, and why RET-mutated tumors almost always occur in the adrenal while SDHB-mutated tumors mostly occur extra-adrenal remains a mystery. ('tumors', 'Phenotype', 'HP:0002664', (160, 166)) ('tumors', 'Disease', (221, 227)) ('result', 'Reg', (81, 87)) ('tumors', 'Phenotype', 'HP:0002664', (221, 227)) ('tumor', 'Phenotype', 'HP:0002664', (221, 226)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('tumors', 'Disease', 'MESH:D009369', (221, 227)) ('tumors', 'Disease', (160, 166)) ('mutations', 'Var', (38, 47)) ('tumors', 'Disease', 'MESH:D009369', (160, 166)) 52361 33947839 Copy number deletion and GIPC2 promoter hypermethylation but not GIPC2 mutation, accompanied with reduced GIPC2 expression, were observed in 39 of 55 PPGLs in our cohort. ('mutation', 'Var', (71, 79)) ('GIPC2', 'Gene', (65, 70)) ('PPGLs', 'Chemical', '-', (150, 155)) ('GIPC2', 'Gene', (25, 30)) ('Copy number deletion', 'Var', (0, 20)) ('hypermethylation', 'Var', (40, 56)) ('reduced', 'NegReg', (98, 105)) ('GIPC2 expression', 'MPA', (106, 122)) 52364 33947839 Overexpressing GIPC2 in PC12 cells inhibited tumor growth in nude mice. ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('tumor', 'Disease', (45, 50)) ('nude mice', 'Species', '10090', (61, 70)) ('PC12', 'CellLine', 'CVCL:0481', (24, 28)) ('Overexpressing', 'Var', (0, 14)) ('inhibited', 'NegReg', (35, 44)) ('GIPC2', 'Gene', (15, 20)) ('tumor', 'Disease', 'MESH:D009369', (45, 50)) 52366 33947839 We found that PPGL-causing mutations in RET and in SDHB could lead to primary rat adrenal chromaffin cell proliferation, ERK activation, and p27 downregulation, all requiring downregulating GIPC2. ('mutations', 'Var', (27, 36)) ('activation', 'PosReg', (125, 135)) ('RET', 'Gene', (40, 43)) ('PPGL-causing', 'Reg', (14, 26)) ('downregulation', 'NegReg', (145, 159)) ('ERK', 'Protein', (121, 124)) ('rat', 'Species', '10116', (113, 116)) ('chromaffin', 'Chemical', '-', (90, 100)) ('rat', 'Species', '10116', (78, 81)) ('p27', 'Gene', (141, 144)) ('lead to', 'Reg', (62, 69)) ('PPGL', 'Chemical', '-', (14, 18)) ('SDHB', 'Gene', (51, 55)) ('downregulating', 'NegReg', (175, 189)) 52368 33947839 In contrast, the PPGL-predisposing VHL mutations had no effect on proliferation and GIPC2 expression but caused p53 downregulation and reduced apoptosis in chromaffin cells compared with wild-type VHL. ('PPGL-predisposing', 'Gene', (17, 34)) ('VHL', 'Gene', (197, 200)) ('downregulation', 'NegReg', (116, 130)) ('VHL', 'Gene', '7428', (197, 200)) ('mutations', 'Var', (39, 48)) ('PPGL', 'Chemical', '-', (17, 21)) ('apoptosis', 'CPA', (143, 152)) ('reduced', 'NegReg', (135, 142)) ('p53', 'Gene', (112, 115)) ('VHL', 'Gene', (35, 38)) ('GIPC2', 'Gene', (84, 89)) ('expression', 'MPA', (90, 100)) ('chromaffin', 'Chemical', '-', (156, 166)) ('VHL', 'Gene', '7428', (35, 38)) ('rat', 'Species', '10116', (73, 76)) 52373 33947839 The application of next-generation sequencing accelerated the discovery of driver susceptibility gene mutations. ('accelerated', 'PosReg', (46, 57)) ('rat', 'Species', '10116', (52, 55)) ('mutations', 'Var', (102, 111)) ('rat', 'Species', '10116', (28, 31)) 52376 33947839 Few studies addressed how susceptibility gene mutations lead to PPGL pathogenesis in chromaffin cells. ('PPGL', 'Chemical', '-', (64, 68)) ('mutations', 'Var', (46, 55)) ('PPGL', 'Gene', (64, 68)) ('chromaffin', 'Chemical', '-', (85, 95)) 52377 33947839 For example, when PPGL-predisposing RET C634R mutation was introduced to PC12 rat pheochromocytoma cells, the cells underwent neuronal differentiation rather than proliferation. ('neuronal differentiation', 'Disease', (126, 150)) ('rat', 'Species', '10116', (170, 173)) ('pheochromocytoma', 'Disease', (82, 98)) ('C634R', 'Var', (40, 45)) ('C634R', 'SUBSTITUTION', 'None', (40, 45)) ('rat', 'Species', '10116', (78, 81)) ('underwent', 'Reg', (116, 125)) ('PC12', 'CellLine', 'CVCL:0481', (73, 77)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (82, 98)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (82, 98)) ('rat', 'Species', '10116', (151, 154)) ('neuronal differentiation', 'Disease', 'MESH:D009410', (126, 150)) ('PPGL', 'Chemical', '-', (18, 22)) 52378 33947839 On the other hand, for MEN 2A syndrome patients with the common RET C634R mutation, only about 50% develop pheochromocytoma, suggesting the tumorigenesis may require additional genetic events. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (107, 123)) ('patients', 'Species', '9606', (39, 47)) ('tumor', 'Disease', (140, 145)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (107, 123)) ('MEN 2A', 'Gene', (23, 29)) ('MEN 2A', 'Gene', '5979', (23, 29)) ('tumor', 'Disease', 'MESH:D009369', (140, 145)) ('C634R', 'Var', (68, 73)) ('C634R', 'SUBSTITUTION', 'None', (68, 73)) ('pheochromocytoma', 'Disease', (107, 123)) 52379 33947839 Whole-genome scanning of PPGLs by array CGH (Comparative Genomic Hybridization) revealed that hereditary and sporadic PPGLs often harbor high-frequency deletions of 1p, 3pq, 11pq, 17p, 21q, especially 1p. ('PPGLs', 'Gene', (118, 123)) ('PPGLs', 'Chemical', '-', (118, 123)) ('rat', 'Species', '10116', (50, 53)) ('3pq', 'Var', (169, 172)) ('PPGLs', 'Chemical', '-', (25, 30)) ('deletions', 'Var', (152, 161)) ('11pq', 'Gene', (174, 178)) ('17p', 'Gene', (180, 183)) 52385 33947839 p27 mutation in rat results in MENX syndrome similar in phenotype and gene expression pattern to human pheochromocytoma. ('pheochromocytoma', 'Disease', 'MESH:D010673', (103, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (103, 119)) ('rat', 'Species', '10116', (16, 19)) ('MENX syndrome', 'Disease', (31, 44)) ('human', 'Species', '9606', (97, 102)) ('mutation', 'Var', (4, 12)) ('p27', 'Gene', (0, 3)) ('results in', 'Reg', (20, 30)) ('pheochromocytoma', 'Disease', (103, 119)) 52388 33947839 In this study, using high-resolution microarrays and selecting for genes with preferential expression in adrenal, we identified a novel tumor suppressor gene GIPC2, that was inactivated in a majority of sporadic PPGL tumors due to copy number deletion and promoter hypermethylation. ('tumor', 'Phenotype', 'HP:0002664', (217, 222)) ('tumor', 'Disease', (217, 222)) ('GIPC2', 'Gene', (158, 163)) ('tumors', 'Phenotype', 'HP:0002664', (217, 223)) ('tumor', 'Disease', 'MESH:D009369', (136, 141)) ('promoter hypermethylation', 'Var', (256, 281)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('tumor', 'Disease', 'MESH:D009369', (217, 222)) ('PPGL tumors', 'Disease', (212, 223)) ('tumor', 'Disease', (136, 141)) ('copy number deletion', 'Var', (231, 251)) ('PPGL tumors', 'Disease', 'MESH:D009369', (212, 223)) 52395 33947839 1B), and 39 tumors had copy number deletion from our cohort of 55 PPGL samples by qPCR, including all 7 RET-mutated PPGL (Fig. ('copy number deletion', 'Var', (23, 43)) ('PPGL', 'Chemical', '-', (116, 120)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('tumors', 'Disease', (12, 18)) ('tumors', 'Phenotype', 'HP:0002664', (12, 18)) ('PPGL', 'Chemical', '-', (66, 70)) ('tumors', 'Disease', 'MESH:D009369', (12, 18)) 52397 33947839 The expression level of GIPC2 decreased significantly in copy number deleted tumors compared with copy number normal tumors (Fig. ('tumors', 'Disease', (77, 83)) ('expression level', 'MPA', (4, 20)) ('tumors', 'Disease', 'MESH:D009369', (77, 83)) ('tumors', 'Phenotype', 'HP:0002664', (77, 83)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('tumors', 'Phenotype', 'HP:0002664', (117, 123)) ('GIPC2', 'Gene', (24, 29)) ('tumors', 'Disease', (117, 123)) ('tumors', 'Disease', 'MESH:D009369', (117, 123)) ('copy number deleted', 'Var', (57, 76)) ('tumor', 'Phenotype', 'HP:0002664', (77, 82)) ('decreased', 'NegReg', (30, 39)) 52398 33947839 IHC staining of adrenal tissue sections demonstrated a moderate to high expression of GIPC2 in the nuclei and cytoplasm of normal medulla cells, low expression in tumors without GIPC2 deletion, and no expression of GIPC2 in GIPC2 deletion tumors (Fig. ('tumors', 'Disease', (239, 245)) ('tumors', 'Disease', 'MESH:D009369', (239, 245)) ('tumors', 'Phenotype', 'HP:0002664', (239, 245)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('tumor', 'Phenotype', 'HP:0002664', (239, 244)) ('GIPC2', 'Gene', (86, 91)) ('expression', 'MPA', (72, 82)) ('rat', 'Species', '10116', (47, 50)) ('tumors', 'Disease', (163, 169)) ('GIPC2', 'Gene', (224, 229)) ('expression', 'MPA', (149, 159)) ('tumors', 'Disease', 'MESH:D009369', (163, 169)) ('deletion', 'Var', (230, 238)) ('rat', 'Species', '10116', (59, 62)) ('tumors', 'Phenotype', 'HP:0002664', (163, 169)) 52401 33947839 Since aberrant promoter methylation was a well-recognized epigenetic mechanism involved in tumor suppressor gene silencing in cancers, we determined the methylation levels of GIPC2 promoter in PPGL samples by MALDI-TOF mass spectrometry (Sequenom EpiTYPER) and found significantly higher levels of methylation in the PPGL samples than normal tissues (Fig. ('PPGL', 'Chemical', '-', (193, 197)) ('cancer', 'Phenotype', 'HP:0002664', (126, 132)) ('aberrant', 'Var', (6, 14)) ('higher', 'PosReg', (281, 287)) ('tumor', 'Disease', 'MESH:D009369', (91, 96)) ('methylation', 'MPA', (153, 164)) ('cancers', 'Phenotype', 'HP:0002664', (126, 133)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('cancers', 'Disease', (126, 133)) ('levels', 'MPA', (288, 294)) ('cancers', 'Disease', 'MESH:D009369', (126, 133)) ('tumor', 'Disease', (91, 96)) ('methylation', 'MPA', (298, 309)) ('PPGL', 'Chemical', '-', (317, 321)) 52408 33947839 The EdU staining assay indicated GIPC2 knockdown increased the cell proliferation in ACC cells (Fig. ('rat', 'Species', '10116', (75, 78)) ('increased', 'PosReg', (49, 58)) ('knockdown', 'Var', (39, 48)) ('cell proliferation in ACC cells', 'CPA', (63, 94)) ('GIPC2', 'Gene', (33, 38)) 52411 33947839 Significant downregulation of phospho-ERK1/2 and phospho-MEK was found in GIPC2 overexpressing cells while the upregulation of them was obtained in GIPC2-knockdown cells (Fig. ('downregulation', 'NegReg', (12, 26)) ('overexpressing', 'Var', (80, 94)) ('ERK1/2', 'Gene', '5595;5594', (38, 44)) ('MEK', 'Gene', '5609', (57, 60)) ('GIPC2', 'Gene', (74, 79)) ('ERK1/2', 'Gene', (38, 44)) ('MEK', 'Gene', (57, 60)) 52413 33947839 HIF-1A was also upregulated by GIPC2 knockdown and this was independent of the MAPK/ERK pathway, as it was not blocked by MAPK/ERK inhibitor PD98059 (Fig. ('upregulated', 'PosReg', (16, 27)) ('HIF-1A', 'Gene', (0, 6)) ('knockdown', 'Var', (37, 46)) ('GIPC2', 'Gene', (31, 36)) ('PD98059', 'Chemical', 'MESH:C093973', (141, 148)) ('HIF-1A', 'Gene', '3091', (0, 6)) 52420 33947839 Western blot confirmed that p27 was significantly increased after overexpression of GIPC2 in PC12, 293T, and hPheo1 cells, while decreased when knocking down GIPC2 in HEK293 cells (Fig. ('293T', 'CellLine', 'CVCL:0063', (99, 103)) ('knocking', 'Var', (144, 152)) ('increased', 'PosReg', (50, 59)) ('GIPC2', 'Gene', (84, 89)) ('p27', 'MPA', (28, 31)) ('overexpression', 'PosReg', (66, 80)) ('decreased', 'NegReg', (129, 138)) ('HEK293', 'CellLine', 'CVCL:0045', (167, 173)) ('PC12', 'CellLine', 'CVCL:0481', (93, 97)) 52434 33947839 We demonstrated that in the presence of dexamethasone (Dex), an analog of the adrenal cortical glucocorticoid to which adrenal chromaffin cells are chronically exposed, ACC underwent proliferation instead of differentiation when transfected with either a MEN 2A-causing RET634 mutant or a MEN 2B-causing RET918 mutant (Fig. ('RET918', 'Gene', (304, 310)) ('Dex', 'Chemical', 'MESH:D003907', (55, 58)) ('MEN 2B', 'Gene', '5979', (289, 295)) ('chromaffin', 'Chemical', '-', (127, 137)) ('dexamethasone', 'Chemical', 'MESH:D003907', (40, 53)) ('rat', 'Species', '10116', (190, 193)) ('differentiation', 'CPA', (208, 223)) ('rat', 'Species', '10116', (10, 13)) ('MEN 2A', 'Gene', '5979', (255, 261)) ('MEN 2A', 'Gene', (255, 261)) ('mutant', 'Var', (277, 283)) ('MEN 2B', 'Gene', (289, 295)) ('mutant', 'Var', (311, 317)) ('RET634', 'Gene', (270, 276)) 52436 33947839 A similar proliferative effect of RET mutant but not wild type can be observed in several cell lines in the presence of Dex (Supplementary Fig. ('RET', 'Gene', (34, 37)) ('rat', 'Species', '10116', (17, 20)) ('Dex', 'Chemical', 'MESH:D003907', (120, 123)) ('mutant', 'Var', (38, 44)) 52437 33947839 In the absence of Dex, transfection of RET mutant but not wild type RET resulted in apoptosis in ACC (Fig. ('Dex', 'Chemical', 'MESH:D003907', (18, 21)) ('RET', 'Gene', (39, 42)) ('apoptosis', 'CPA', (84, 93)) ('mutant', 'Var', (43, 49)) 52442 33947839 The proliferation accelerated in RET634/RET918-transfected cells when GIPC2 was knocked down (Fig. ('proliferation', 'CPA', (4, 17)) ('GIPC2', 'Gene', (70, 75)) ('rat', 'Species', '10116', (11, 14)) ('rat', 'Species', '10116', (24, 27)) ('accelerated', 'PosReg', (18, 29)) ('knocked down', 'Var', (80, 92)) 52443 33947839 5B), indicating opposing effects of GIPC2 and PPGL-causing RET mutations on proliferation. ('mutations', 'Var', (63, 72)) ('PPGL-causing', 'Gene', (46, 58)) ('rat', 'Species', '10116', (83, 86)) ('PPGL', 'Chemical', '-', (46, 50)) ('RET', 'Disease', (59, 62)) 52444 33947839 We found the level of GIPC2 and p27/p18 downregulated but phospho-ERK1/2 and phospho-RB significantly increased in RET634/RET918-transfected ACCs, while p53 level remained unchanged (Fig. ('p18', 'Gene', '1031', (36, 39)) ('ERK1/2', 'Gene', (66, 72)) ('phospho-RB', 'MPA', (77, 87)) ('level', 'MPA', (13, 18)) ('downregulated', 'NegReg', (40, 53)) ('ERK1/2', 'Gene', '5595;5594', (66, 72)) ('RET634/RET918-transfected', 'Var', (115, 140)) ('p18', 'Gene', (36, 39)) ('GIPC2', 'MPA', (22, 27)) ('increased', 'PosReg', (102, 111)) 52446 33947839 Together, these results suggest that the PPGL-causing RET mutation leads to chromaffin cell proliferation primarily via downregulating GIPC2. ('RET', 'Gene', (54, 57)) ('rat', 'Species', '10116', (99, 102)) ('PPGL-causing RET', 'Gene', (41, 57)) ('chromaffin', 'Chemical', '-', (76, 86)) ('chromaffin cell proliferation', 'CPA', (76, 105)) ('mutation', 'Var', (58, 66)) ('GIPC2', 'Gene', (135, 140)) ('PPGL', 'Chemical', '-', (41, 45)) ('leads to', 'Reg', (67, 75)) ('downregulating', 'NegReg', (120, 134)) 52447 33947839 We next asked whether GIPC2 had a similar role in mediating the oncogenic effects of SDHx mutations in SDHx-related hereditary PPGL, since SDHx-related hereditary tumors also significantly downregulated GIPC2 and p27 (Fig. ('hereditary tumors', 'Disease', 'MESH:D030342', (152, 169)) ('SDH', 'Gene', (139, 142)) ('mutations', 'Var', (90, 99)) ('SDH', 'Gene', '6390', (103, 106)) ('SDH', 'Gene', (85, 88)) ('GIPC2', 'Protein', (203, 208)) ('downregulated', 'NegReg', (189, 202)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('hereditary tumors', 'Disease', (152, 169)) ('PPGL', 'Chemical', '-', (127, 131)) ('SDH', 'Gene', '6390', (139, 142)) ('tumors', 'Phenotype', 'HP:0002664', (163, 169)) ('SDH', 'Gene', '6390', (85, 88)) ('SDH', 'Gene', (103, 106)) 52448 33947839 Mutations of the genes encoding succinate dehydrogenase subunits B (SDHB) and D (SDHD) are the most well-known causes of hereditary paraganglia. ('hereditary paraganglia', 'Disease', (121, 143)) ('SDHD', 'Gene', '6392', (81, 85)) ('causes', 'Reg', (111, 117)) ('SDHD', 'Gene', (81, 85)) ('SDHB', 'Gene', (68, 72)) ('Mutations', 'Var', (0, 9)) ('hereditary paraganglia', 'Disease', 'MESH:D030342', (121, 143)) ('succinate dehydrogenase subunits B', 'Gene', (32, 66)) ('succinate dehydrogenase subunits B', 'Gene', '6390', (32, 66)) 52449 33947839 The overexpression of a PPGL-causing SDHB mutation or the knockdown of wild type SDHD protein (both resulted in the increased intracellular concentration of oncometabolite succinate) led to ACC proliferation and corresponding changes of the downstream genes including GIPC2, p27, p18, phosphor-pRb, and phospho-ERK, similar to the RET mutant (Fig. ('SDHD', 'Gene', '6392', (81, 85)) ('GIPC2', 'Gene', (268, 273)) ('increased', 'PosReg', (116, 125)) ('ACC', 'PosReg', (190, 193)) ('p27', 'Gene', (275, 278)) ('PPGL-causing SDHB', 'Gene', (24, 41)) ('mutation', 'Var', (42, 50)) ('SDHD', 'Gene', (81, 85)) ('increased intracellular concentration', 'Phenotype', 'HP:0003575', (116, 153)) ('PPGL', 'Chemical', '-', (24, 28)) ('overexpression', 'PosReg', (4, 18)) ('p18', 'Gene', '1031', (280, 283)) ('changes', 'Reg', (226, 233)) ('SDHB', 'Gene', (37, 41)) ('pRb', 'Gene', (294, 297)) ('rat', 'Species', '10116', (147, 150)) ('succinate', 'Chemical', 'MESH:D019802', (172, 181)) ('rat', 'Species', '10116', (201, 204)) ('pRb', 'Gene', '5925', (294, 297)) ('p18', 'Gene', (280, 283)) 52452 33947839 Thus, the oncogenic effect of PPGL-causing SDHB-mutation is also mediated by downregulating GIPC2. ('SDHB-mutation', 'Gene', (43, 56)) ('SDHB-mutation', 'Var', (43, 56)) ('downregulating', 'NegReg', (77, 91)) ('PPGL', 'Chemical', '-', (30, 34)) ('GIPC2', 'Gene', (92, 97)) 52454 33947839 We observed drastically increased GIPC2 promoter methylation in chromaffin cells when transfected with SDHB mutant, but not RET mutants (Fig. ('chromaffin', 'Chemical', '-', (64, 74)) ('SDHB', 'Gene', (103, 107)) ('GIPC2', 'Gene', (34, 39)) ('mutant', 'Var', (108, 114)) ('increased', 'PosReg', (24, 33)) 52456 33947839 In cell lines, the addition of DMS can also induce GIPC2 methylation as well as proliferation, while octyl-alpha-ketoglutarate, a membrane-permeating 2-KG analog, had opposite effects (Supplementary Fig. ('induce', 'PosReg', (44, 50)) ('DMS', 'Chemical', 'MESH:C056451', (31, 34)) ('proliferation', 'CPA', (80, 93)) ('octyl-alpha-ketoglutarate', 'Chemical', '-', (101, 126)) ('methylation', 'MPA', (57, 68)) ('GIPC2', 'Gene', (51, 56)) ('rat', 'Species', '10116', (122, 125)) ('rat', 'Species', '10116', (87, 90)) ('DMS', 'Var', (31, 34)) 52457 33947839 GIPC2 and p27 were not as significantly decreased in VHL-mutated tumors (Cluster 1B) as in Clusters A and 2A (Fig. ('p27', 'Var', (10, 13)) ('VHL', 'Gene', (53, 56)) ('tumors', 'Disease', (65, 71)) ('VHL', 'Gene', '7428', (53, 56)) ('tumors', 'Disease', 'MESH:D009369', (65, 71)) ('tumors', 'Phenotype', 'HP:0002664', (65, 71)) ('decreased', 'NegReg', (40, 49)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) 52459 33947839 The VHL-type 1 mutation is not associated with PPGL and VHL-type 2C mutation is associated only with PPGL, while type 2A and 2B are associated with PPGL and other syndrome diseases. ('VHL', 'Gene', (56, 59)) ('PPGL', 'Chemical', '-', (101, 105)) ('associated', 'Reg', (132, 142)) ('syndrome diseases', 'Disease', (163, 180)) ('VHL', 'Gene', '7428', (56, 59)) ('mutation', 'Var', (68, 76)) ('PPGL', 'Chemical', '-', (47, 51)) ('associated', 'Reg', (80, 90)) ('PPGL', 'Disease', (148, 152)) ('VHL', 'Gene', (4, 7)) ('PPGL', 'Disease', (101, 105)) ('syndrome diseases', 'Disease', 'MESH:D003141', (163, 180)) ('VHL', 'Gene', '7428', (4, 7)) ('PPGL', 'Chemical', '-', (148, 152)) 52460 33947839 Overexpression of VHL wild type and mutants did not induce proliferation (Fig. ('VHL', 'Gene', '7428', (18, 21)) ('rat', 'Species', '10116', (66, 69)) ('VHL', 'Gene', (18, 21)) ('mutants', 'Var', (36, 43)) 52461 33947839 To reduce the effects of basal VHL activity, we first knocked down wild-type VHL in ACC before introducing various VHL constructs. ('VHL', 'Gene', '7428', (31, 34)) ('knocked down', 'Var', (54, 66)) ('VHL', 'Gene', (115, 118)) ('VHL', 'Gene', '7428', (115, 118)) ('VHL', 'Gene', (77, 80)) ('VHL', 'Gene', '7428', (77, 80)) ('VHL', 'Gene', (31, 34)) 52463 33947839 In fact, wild type and type I VHL mutant could stabilize p53 and induce apoptosis in ACC, but all type 2 VHL mutants failed to stabilize p53, and reduce the apoptosis of ACC (Fig. ('p53', 'MPA', (57, 60)) ('VHL', 'Gene', (105, 108)) ('apoptosis', 'CPA', (157, 166)) ('VHL', 'Gene', (30, 33)) ('induce', 'Reg', (65, 71)) ('VHL', 'Gene', '7428', (105, 108)) ('VHL', 'Gene', '7428', (30, 33)) ('apoptosis', 'CPA', (72, 81)) ('mutants', 'Var', (109, 116)) ('reduce', 'NegReg', (146, 152)) ('mutant', 'Var', (34, 40)) 52464 33947839 In addition, In PC12 cells, all type 2 mutants reduced the p53 activity compared with wild type and type 1 mutant, regardless of whether GIPC2 was overexpressed (Fig. ('mutants', 'Var', (39, 46)) ('PC12', 'CellLine', 'CVCL:0481', (16, 20)) ('reduced', 'NegReg', (47, 54)) ('p53', 'Enzyme', (59, 62)) 52465 33947839 The results indicate that p53 but not GIPC2 may be involved in the tumorigenesis of VHL-related PPGL. ('VHL', 'Gene', (84, 87)) ('tumor', 'Disease', 'MESH:D009369', (67, 72)) ('p53', 'Var', (26, 29)) ('VHL', 'Gene', '7428', (84, 87)) ('tumor', 'Phenotype', 'HP:0002664', (67, 72)) ('involved', 'Reg', (51, 59)) ('tumor', 'Disease', (67, 72)) ('PPGL', 'Chemical', '-', (96, 100)) 52466 33947839 We report the identification of a tumor suppressor gene, GIPC2 on chromosome 1p31.1, whose inactivation was associated with promoter hypermethylation and LOH in a majority of the sporadic PPGLs. ('GIPC2', 'Gene', (57, 62)) ('LOH', 'Var', (154, 157)) ('tumor', 'Disease', (34, 39)) ('promoter', 'MPA', (124, 132)) ('inactivation', 'MPA', (91, 103)) ('PPGLs', 'Chemical', '-', (188, 193)) ('tumor', 'Disease', 'MESH:D009369', (34, 39)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('PPGLs', 'Disease', (188, 193)) 52467 33947839 We also provide evidence that the oncogenic effects on chromaffin cells by common RET- and SDH- mutations found in hereditary PPGL are mediated by downregulating GIPC2. ('downregulating', 'NegReg', (147, 161)) ('SDH', 'Gene', (91, 94)) ('chromaffin', 'Chemical', '-', (55, 65)) ('SDH', 'Gene', '6390', (91, 94)) ('GIPC2', 'Gene', (162, 167)) ('PPGL', 'Chemical', '-', (126, 130)) ('PPGL', 'Gene', (126, 130)) ('RET-', 'Gene', (82, 86)) ('mutations', 'Var', (96, 105)) 52471 33947839 Germline mutations of RET and SDHB predispose the carrier to PPGL by downregulating GIPC2. ('Germline mutations', 'Var', (0, 18)) ('RET', 'Gene', (22, 25)) ('PPGL', 'Disease', (61, 65)) ('predispose', 'Reg', (35, 45)) ('downregulating', 'NegReg', (69, 83)) ('GIPC2', 'MPA', (84, 89)) ('PPGL', 'Chemical', '-', (61, 65)) ('SDHB', 'Gene', (30, 34)) 52472 33947839 Loss of GIPC2 resulted in p27 repression, activation of HIF-1alpha as well as the pERK pathways, proliferation of chromaffin cells, and possibly with the help of other 1p genes, oncogenic transformations leading to PPGL. ('pERK', 'Gene', '9451', (82, 86)) ('PPGL', 'Chemical', '-', (215, 219)) ('HIF-1alpha', 'Gene', (56, 66)) ('rat', 'Species', '10116', (104, 107)) ('oncogenic transformations', 'CPA', (178, 203)) ('proliferation', 'CPA', (97, 110)) ('p27 repression', 'Protein', (26, 40)) ('chromaffin', 'Chemical', '-', (114, 124)) ('activation', 'PosReg', (42, 52)) ('HIF-1alpha', 'Gene', '3091', (56, 66)) ('Loss', 'Var', (0, 4)) ('GIPC2', 'Gene', (8, 13)) ('pERK', 'Gene', (82, 86)) 52484 33947839 Based on GIPC2's role and expression level, the Cluster 1B (VHL-related) was distinct from Cluster 2A and 1A (RET- and SDHx-related respectively), a classification that was consistent with the cytogenetics observations of large numbers of PPGLs, which showed the VHL-related tumors with chromosomal deletion patterns (mostly 3pq and 11p) that are distinct from those of RET- and SDHx-related tumors (mostly 1p and 3q). ('PPGLs', 'Chemical', '-', (239, 244)) ('SDH', 'Gene', (119, 122)) ('tumor', 'Phenotype', 'HP:0002664', (392, 397)) ('VHL', 'Gene', (263, 266)) ('VHL', 'Gene', (60, 63)) ('tumor', 'Phenotype', 'HP:0002664', (275, 280)) ('tumors', 'Disease', 'MESH:D009369', (392, 398)) ('SDH', 'Gene', '6390', (379, 382)) ('tumors', 'Disease', (275, 281)) ('VHL', 'Gene', '7428', (263, 266)) ('VHL', 'Gene', '7428', (60, 63)) ('tumors', 'Phenotype', 'HP:0002664', (275, 281)) ('3pq', 'Var', (325, 328)) ('tumors', 'Disease', 'MESH:D009369', (275, 281)) ('tumors', 'Phenotype', 'HP:0002664', (392, 398)) ('SDH', 'Gene', '6390', (119, 122)) ('SDH', 'Gene', (379, 382)) ('tumors', 'Disease', (392, 398)) 52487 33947839 It is well-known that type 2C VHL mutants, which predispose only to PPGL, are normal with respect to HIF regulation, suggesting that a VHL target other than HIF is responsible for VHL-associated PPGL. ('VHL', 'Gene', (135, 138)) ('VHL', 'Gene', (180, 183)) ('PPGL', 'Disease', (68, 72)) ('mutants', 'Var', (34, 41)) ('PPGL', 'Disease', (195, 199)) ('VHL', 'Gene', '7428', (135, 138)) ('VHL', 'Gene', '7428', (180, 183)) ('VHL', 'Gene', (30, 33)) ('PPGL', 'Chemical', '-', (68, 72)) ('VHL', 'Gene', '7428', (30, 33)) ('PPGL', 'Chemical', '-', (195, 199)) 52489 33947839 We found the ability of a VHL mutation to predispose to PPGL is reflected by its ability to destabilize p53 and to reduce apoptosis (Fig. ('destabilize', 'NegReg', (92, 103)) ('apoptosis', 'CPA', (122, 131)) ('VHL', 'Gene', (26, 29)) ('mutation', 'Var', (30, 38)) ('VHL', 'Gene', '7428', (26, 29)) ('PPGL', 'Disease', (56, 60)) ('reduce', 'NegReg', (115, 121)) ('p53', 'Protein', (104, 107)) ('predispose', 'Reg', (42, 52)) ('PPGL', 'Chemical', '-', (56, 60)) 52495 33947839 To detect copy number variation (CNV) in sporadic PPGL, Affymetrix genome-wide human SNP array 6.0 was used. ('human', 'Species', '9606', (79, 84)) ('PPGL', 'Chemical', '-', (50, 54)) ('PPGL', 'Gene', (50, 54)) ('copy number variation', 'Var', (10, 31)) 52519 29878124 A Unique Case of Metastatic, Functional, Hereditary Paraganglioma Associated With anSDHC Germline Mutation Mutations in genes encoding for the succinate dehydrogenase (SDH) complex are linked to hereditary paraganglioma syndromes. ('Paraganglioma', 'Phenotype', 'HP:0002668', (52, 65)) ('succinate dehydrogenase', 'Gene', (143, 166)) ('succinate dehydrogenase', 'Gene', '6390', (143, 166)) ('hereditary paraganglioma syndromes', 'Disease', (195, 229)) ('Associated', 'Reg', (66, 76)) ('SDH', 'Gene', (168, 171)) ('SDH', 'Gene', '6390', (168, 171)) ('Hereditary Paraganglioma', 'Disease', 'MESH:D010235', (41, 65)) ('paraganglioma', 'Phenotype', 'HP:0002668', (206, 219)) ('SDH', 'Gene', '6390', (84, 87)) ('hereditary paraganglioma syndromes', 'Disease', 'MESH:D061325', (195, 229)) ('linked to', 'Reg', (185, 194)) ('Hereditary Paraganglioma', 'Disease', (41, 65)) ('Mutations', 'Var', (107, 116)) ('SDH', 'Gene', (84, 87)) 52525 29878124 Genetic testing revealed a heterozygousSDHC c.43C>T, p.Arg15X mutation, which was also detected in her daughter and her grandson, both of whom have no biochemical or imaging evidence of paraganglioma syndrome yet. ('SDHC', 'Gene', '6391', (39, 43)) ('paraganglioma syndrome', 'Disease', (186, 208)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (186, 208)) ('c.43C>T', 'Mutation', 'rs201286421', (44, 51)) ('p.Arg15X', 'Mutation', 'rs201286421', (53, 61)) ('p.Arg15X', 'Var', (53, 61)) ('paraganglioma', 'Phenotype', 'HP:0002668', (186, 199)) ('SDHC', 'Gene', (39, 43)) 52531 29878124 Mutations in the genes encoding different subunits of the succinate dehydrogenase (SDH) enzyme complexes, which are responsible for oxidative metabolism and electron transfer, have been linked to hereditary paragangliomas. ('linked to', 'Reg', (186, 195)) ('succinate dehydrogenase', 'Gene', '6390', (58, 81)) ('hereditary paragangliomas', 'Disease', (196, 221)) ('SDH', 'Gene', '6390', (83, 86)) ('succinate dehydrogenase', 'Gene', (58, 81)) ('Mutations', 'Var', (0, 9)) ('paraganglioma', 'Phenotype', 'HP:0002668', (207, 220)) ('SDH', 'Gene', (83, 86)) ('paragangliomas', 'Phenotype', 'HP:0002668', (207, 221)) ('hereditary paragangliomas', 'Disease', 'MESH:D010235', (196, 221)) 52533 29878124 Mutations in theSDHC locus are rare and usually manifest with isolated, benign, nonfunctional (parasympathetic), and asymptomatic head and neck paragangliomas. ('SDHC', 'Gene', (16, 20)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (139, 158)) ('paragangliomas', 'Phenotype', 'HP:0002668', (144, 158)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (130, 158)) ('SDHC', 'Gene', '6391', (16, 20)) ('manifest', 'Reg', (48, 56)) ('paraganglioma', 'Phenotype', 'HP:0002668', (144, 157)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (139, 158)) ('Mutations', 'Var', (0, 9)) ('neck paragangliomas', 'Disease', (139, 158)) ('nonfunctional', 'Disease', (80, 93)) 52534 29878124 Our case exemplifies a distinctive variant:functional, metastatic, abdominal paraganglioma associated with anSDHC mutation. ('paraganglioma', 'Phenotype', 'HP:0002668', (77, 90)) ('SDHC', 'Gene', '6391', (109, 113)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (67, 90)) ('abdominal paraganglioma', 'Disease', (67, 90)) ('SDHC', 'Gene', (109, 113)) ('mutation', 'Var', (114, 122)) ('associated', 'Reg', (91, 101)) 52547 29878124 She also received everolimus that was later switched into sunitinib and then temozolomide, which did not prevent disease progression, and she expired in 2012. , The germline mutation screen was negative for SDHB and SDHD gene mutations but was positive for a heterozygous SDHC c.43C>T (p. Arg15X) mutation. ('SDHB', 'Gene', '6390', (207, 211)) ('sunitinib', 'Chemical', 'MESH:D000077210', (58, 67)) ('SDHB', 'Gene', (207, 211)) ('Arg15X', 'SUBSTITUTION', 'None', (289, 295)) ('everolimus', 'Chemical', 'MESH:D000068338', (18, 28)) ('temozolomide', 'Chemical', 'MESH:D000077204', (77, 89)) ('SDHC', 'Gene', (272, 276)) ('SDHD', 'Gene', '6392', (216, 220)) ('SDHC', 'Gene', '6391', (272, 276)) ('SDHD', 'Gene', (216, 220)) ('c.43C>T', 'Mutation', 'rs201286421', (277, 284)) ('negative', 'NegReg', (194, 202)) ('Arg15X', 'Var', (289, 295)) 52554 29878124 The sameSDHC mutation was detected in germline DNA of her 36-year-old daughter and 9-year-old grandson, who remain clinically, biochemically, and radiologically free of paraganglioma. ('SDHC', 'Gene', '6391', (8, 12)) ('paraganglioma', 'Disease', (169, 182)) ('mutation', 'Var', (13, 21)) ('paraganglioma', 'Disease', 'MESH:D010235', (169, 182)) ('SDHC', 'Gene', (8, 12)) ('detected', 'Reg', (26, 34)) ('paraganglioma', 'Phenotype', 'HP:0002668', (169, 182)) 52556 29878124 We herein report a case of functional, metastatic abdominal paraganglioma associated with SDHC germline mutation. ('germline', 'Var', (95, 103)) ('SDHC', 'Gene', (90, 94)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (50, 73)) ('SDHC', 'Gene', '6391', (90, 94)) ('abdominal paraganglioma', 'Disease', (50, 73)) ('paraganglioma', 'Phenotype', 'HP:0002668', (60, 73)) ('associated', 'Reg', (74, 84)) 52557 29878124 Paraganglioma syndrome 3 is associated with SDHC mutations and classically presents with isolated, asymptomatic, benign, nonfunctional head and neck paragangliomas. ('SDHC', 'Gene', '6391', (44, 48)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (135, 163)) ('Paraganglioma syndrome', 'Disease', 'MESH:D010235', (0, 22)) ('mutations', 'Var', (49, 58)) ('associated', 'Reg', (28, 38)) ('neck paragangliomas', 'Disease', (144, 163)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (144, 163)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('paraganglioma', 'Phenotype', 'HP:0002668', (149, 162)) ('paragangliomas', 'Phenotype', 'HP:0002668', (149, 163)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (144, 163)) ('SDHC', 'Gene', (44, 48)) ('Paraganglioma syndrome', 'Disease', (0, 22)) 52560 29878124 reported a case of malignant sympathetic paraganglioma in a patient with a deletion of the SDHC gene. ('SDHC', 'Gene', (91, 95)) ('patient', 'Species', '9606', (60, 67)) ('SDHC', 'Gene', '6391', (91, 95)) ('paraganglioma', 'Phenotype', 'HP:0002668', (41, 54)) ('deletion', 'Var', (75, 83)) ('malignant sympathetic paraganglioma', 'Phenotype', 'HP:0100697', (19, 54)) ('malignant sympathetic paraganglioma', 'Disease', 'MESH:C565335', (19, 54)) ('malignant sympathetic paraganglioma', 'Disease', (19, 54)) 52561 29878124 reported a case of the SDHC mutation manifesting as a locally aggressive, catecholamine-producing, temporal bone paraganglioma associated with increased hypoxia-inducible factor 2alpha expression. ('bone paraganglioma', 'Disease', 'MESH:D010235', (108, 126)) ('bone paraganglioma', 'Disease', (108, 126)) ('increased', 'PosReg', (143, 152)) ('SDHC', 'Gene', '6391', (23, 27)) ('expression', 'MPA', (185, 195)) ('paraganglioma', 'Phenotype', 'HP:0002668', (113, 126)) ('hypoxia-inducible factor 2alpha', 'Gene', '2034', (153, 184)) ('mutation', 'Var', (28, 36)) ('catecholamine', 'Chemical', 'MESH:D002395', (74, 87)) ('hypoxia-inducible factor 2alpha', 'Gene', (153, 184)) ('SDHC', 'Gene', (23, 27)) 52563 29878124 A high false-negative rate (29% to 44%) of123I-MIBG imaging is frequently observed in metastatic tumors with unfavorable prognosis, as seen in hereditary paraganglioma syndrome, as a result of the SDHB mutation. ('paraganglioma', 'Phenotype', 'HP:0002668', (154, 167)) ('hereditary paraganglioma syndrome', 'Disease', 'MESH:D061325', (143, 176)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('SDHB', 'Gene', '6390', (197, 201)) ('observed', 'Reg', (74, 82)) ('SDHB', 'Gene', (197, 201)) ('mutation', 'Var', (202, 210)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (42, 51)) ('tumors', 'Disease', (97, 103)) ('tumors', 'Phenotype', 'HP:0002664', (97, 103)) ('hereditary paraganglioma syndrome', 'Disease', (143, 176)) ('tumors', 'Disease', 'MESH:D009369', (97, 103)) ('result', 'Reg', (183, 189)) 52567 29878124 The SDHC Arg15X mutation has been previously reported in patients with paraganglioma and is predicted to be pathogenic. ('Arg15X', 'Var', (9, 15)) ('paraganglioma', 'Disease', (71, 84)) ('reported', 'Reg', (45, 53)) ('SDHC', 'Gene', (4, 8)) ('patients', 'Species', '9606', (57, 65)) ('Arg15X', 'Mutation', 'rs201286421', (9, 15)) ('SDHC', 'Gene', '6391', (4, 8)) ('paraganglioma', 'Disease', 'MESH:D010235', (71, 84)) ('paraganglioma', 'Phenotype', 'HP:0002668', (71, 84)) 52570 29878124 This patient's tumor had a predominant, weakly diffuse cytoplasmic staining, which has been reported in some tumors with SDH mutations, especiallySDHD, and is compatible with deficient SDH function, expected to occur after an early SDHC truncation. ('SDH', 'Gene', '6390', (185, 188)) ('SDH', 'Gene', '6390', (121, 124)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('SDH', 'Gene', (146, 149)) ('tumors', 'Phenotype', 'HP:0002664', (109, 115)) ('SDH', 'Gene', (232, 235)) ('SDHC', 'Gene', '6391', (232, 236)) ('SDH', 'Gene', (185, 188)) ('SDH', 'Gene', (121, 124)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('tumors', 'Disease', (109, 115)) ('mutations', 'Var', (125, 134)) ('especiallySDHD', 'Disease', 'None', (136, 150)) ('especiallySDHD', 'Disease', (136, 150)) ('tumor', 'Disease', (15, 20)) ('deficient SDH function', 'Disease', (175, 197)) ('SDHC', 'Gene', (232, 236)) ('patient', 'Species', '9606', (5, 12)) ('tumors', 'Disease', 'MESH:D009369', (109, 115)) ('tumor', 'Disease', 'MESH:D009369', (15, 20)) ('deficient SDH function', 'Disease', 'MESH:D015499', (175, 197)) ('SDH', 'Gene', '6390', (232, 235)) ('SDH', 'Gene', '6390', (146, 149)) ('tumor', 'Disease', (109, 114)) 52572 29878124 Loss of heterozygosity detection could have been further confounded by admixed nontumor cells (e.g., from extensive vascularity). ('tumor', 'Disease', 'MESH:D009369', (82, 87)) ('Loss', 'NegReg', (0, 4)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('tumor', 'Disease', (82, 87)) ('heterozygosity', 'Var', (8, 22)) 52573 29878124 Although the germline SDHC mutation is likely the primary cause of the paraganglioma in this patient, this tumor may have acquired additional changes that contributed to its unusually aggressive behavior and poor outcome. ('SDHC', 'Gene', (22, 26)) ('paraganglioma', 'Disease', (71, 84)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumor', 'Disease', (107, 112)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (184, 203)) ('SDHC', 'Gene', '6391', (22, 26)) ('cause', 'Reg', (58, 63)) ('paraganglioma', 'Disease', 'MESH:D010235', (71, 84)) ('mutation', 'Var', (27, 35)) ('patient', 'Species', '9606', (93, 100)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) ('paraganglioma', 'Phenotype', 'HP:0002668', (71, 84)) 52576 29878124 However, when an SDHx mutation (including SDHC) is identified in a relative of a proband, periodic biochemical and whole-body imaging studies are indicated. ('mutation', 'Var', (22, 30)) ('SDH', 'Gene', '6390', (42, 45)) ('SDHC', 'Gene', (42, 46)) ('SDH', 'Gene', (17, 20)) ('SDH', 'Gene', (42, 45)) ('SDHC', 'Gene', '6391', (42, 46)) ('SDH', 'Gene', '6390', (17, 20)) 52578 29878124 Our case is unique in that our patient had a pathogenicSDHC germline mutation with a metastatic abdominal paraganglioma that was functional (sympathetic). ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (96, 119)) ('abdominal paraganglioma', 'Disease', (96, 119)) ('germline mutation', 'Var', (60, 77)) ('SDHC', 'Gene', (55, 59)) ('patient', 'Species', '9606', (31, 38)) ('SDHC', 'Gene', '6391', (55, 59)) ('paraganglioma', 'Phenotype', 'HP:0002668', (106, 119)) 52581 29172408 A novel neurofibromatosis type 1 (NF1) mutation in a patient with NF1 and pheochromocytoma To the Editor, Neurofibromatosis type 1 (NF1) is one of the most common autosomal dominant inherent disorders with an incidence of one in 3,000 individuals. ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (106, 123)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (8, 25)) ('autosomal dominant inherent disorders', 'Disease', 'MESH:D030342', (163, 200)) ('neurofibromatosis type 1', 'Gene', '4763', (8, 32)) ('NF1', 'Gene', '4763', (132, 135)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (74, 90)) ('NF1', 'Gene', '4763', (66, 69)) ('patient', 'Species', '9606', (53, 60)) ('NF1', 'Gene', (132, 135)) ('pheochromocytoma', 'Disease', (74, 90)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (74, 90)) ('NF1', 'Gene', (66, 69)) ('Neurofibromatosis type 1', 'Gene', '4763', (106, 130)) ('neurofibromatosis type 1', 'Gene', (8, 32)) ('NF1', 'Gene', '4763', (34, 37)) ('mutation', 'Var', (39, 47)) ('Neurofibromatosis type 1', 'Gene', (106, 130)) ('autosomal dominant inherent disorders', 'Disease', (163, 200)) ('NF1', 'Gene', (34, 37)) 52585 29172408 Here, we report a novel germline mutation in the NF1 gene in a patient with NF1 and pheochromocytoma. ('NF1', 'Gene', '4763', (76, 79)) ('pheochromocytoma', 'Disease', (84, 100)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (84, 100)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (84, 100)) ('germline mutation', 'Var', (24, 41)) ('patient', 'Species', '9606', (63, 70)) ('NF1', 'Gene', (49, 52)) ('NF1', 'Gene', (76, 79)) ('NF1', 'Gene', '4763', (49, 52)) 52610 29172408 Genetic analysis of the index patient detected a novel germline NF1c.6533delT in exon 43 of the NF1 gene, and the identical germline mutation was found in both sisters (other family members refused genetic analysis) (Fig. ('patient', 'Species', '9606', (30, 37)) ('c.6533delT', 'DELETION', 'None', (67, 77)) ('NF1', 'Gene', (64, 67)) ('NF1', 'Gene', '4763', (64, 67)) ('NF1', 'Gene', '4763', (96, 99)) ('NF1', 'Gene', (96, 99)) ('c.6533delT', 'Var', (67, 77)) 52614 29172408 This is caused by a mutation in the NF1 gene and results in a predisposition to cancer with rates of malignancy 5% to 15% higher than the general population; primarily due to markedly increased risks of malignant peripheral nerve sheath tumors and central nervous system tumors including optic glioma. ('malignant peripheral nerve sheath tumors', 'Disease', 'MESH:D018319', (203, 243)) ('glioma', 'Phenotype', 'HP:0009733', (294, 300)) ('tumor', 'Phenotype', 'HP:0002664', (271, 276)) ('tumors', 'Phenotype', 'HP:0002664', (237, 243)) ('mutation', 'Var', (20, 28)) ('central nervous system tumors', 'Disease', 'MESH:D016543', (248, 277)) ('malignant peripheral nerve sheath tumors', 'Disease', (203, 243)) ('tumor', 'Phenotype', 'HP:0002664', (237, 242)) ('optic glioma', 'Phenotype', 'HP:0009734', (288, 300)) ('cancer', 'Disease', (80, 86)) ('NF1', 'Gene', '4763', (36, 39)) ('cancer', 'Phenotype', 'HP:0002664', (80, 86)) ('malignancy', 'Disease', 'MESH:D009369', (101, 111)) ('NF1', 'Gene', (36, 39)) ('caused by', 'Reg', (8, 17)) ('higher', 'PosReg', (122, 128)) ('increased', 'PosReg', (184, 193)) ('cancer', 'Disease', 'MESH:D009369', (80, 86)) ('malignancy', 'Disease', (101, 111)) ('central nervous system tumors', 'Disease', (248, 277)) ('malignant peripheral nerve sheath tumors', 'Phenotype', 'HP:0100697', (203, 243)) ('tumors', 'Phenotype', 'HP:0002664', (271, 277)) ('optic glioma', 'Disease', (288, 300)) ('nervous system tumors', 'Phenotype', 'HP:0004375', (256, 277)) ('optic glioma', 'Disease', 'MESH:D020339', (288, 300)) 52623 29172408 Until now, there has been limited information regarding a genetic-clinical association except that the deletion of a whole NF1 gene (manifesting early, large numbers of cutaneous neurofibromas, severe cognitive abnormalities, somatic overgrowth, and facial dysmorphism) and 3-bp in-frame deletion of Exon 17, c.2970-2972 delAAT (manifesting typical pigmentary features of NF1, but no cutaneous or surface plexiform neurofibromas). ('severe cognitive abnormalities', 'Phenotype', 'HP:0010864', (194, 224)) ('cognitive abnormalities', 'Disease', 'MESH:D003072', (201, 224)) ('NF1', 'Gene', '4763', (372, 375)) ('c.2970-2972 delAAT', 'Var', (309, 327)) ('cutaneous neurofibromas', 'Disease', (169, 192)) ('neurofibromas', 'Disease', (415, 428)) ('pigmentary', 'Disease', 'MESH:D005902', (349, 359)) ('pigmentary', 'Disease', (349, 359)) ('NF1', 'Gene', (372, 375)) ('cutaneous neurofibromas', 'Phenotype', 'HP:0100698', (169, 192)) ('NF1', 'Gene', '4763', (123, 126)) ('neurofibromas', 'Phenotype', 'HP:0001067', (179, 192)) ('cognitive abnormalities', 'Phenotype', 'HP:0100543', (201, 224)) ('neurofibromas', 'Disease', 'MESH:D009455', (179, 192)) ('plexiform neurofibromas', 'Phenotype', 'HP:0009732', (405, 428)) ('NF1', 'Gene', (123, 126)) ('facial dysmorphism', 'Disease', 'None', (250, 268)) ('overgrowth', 'Phenotype', 'HP:0001548', (234, 244)) ('neurofibromas', 'Phenotype', 'HP:0001067', (415, 428)) ('facial dysmorphism', 'Phenotype', 'HP:0001999', (250, 268)) ('cognitive abnormalities', 'Disease', (201, 224)) ('neurofibromas', 'Disease', 'MESH:D009455', (415, 428)) ('facial dysmorphism', 'Disease', (250, 268)) ('somatic overgrowth', 'Disease', (226, 244)) ('neurofibromas', 'Disease', (179, 192)) ('somatic overgrowth', 'Disease', 'MESH:D013001', (226, 244)) ('pigmentary features', 'Phenotype', 'HP:0001000', (349, 368)) ('cutaneous neurofibromas', 'Disease', 'MESH:D009455', (169, 192)) ('c.2970-2972 delAAT', 'Mutation', 'rs267606606', (309, 327)) 52625 29172408 In the case presented here, we were unable to determine whether the present novel mutation in the NF1 correlates with pheochromocytoma as the sisters of the patient showed no signs of pheochromocytoma and refused further evaluation. ('pheochromocytoma', 'Disease', (184, 200)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (118, 134)) ('patient', 'Species', '9606', (157, 164)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (184, 200)) ('mutation', 'Var', (82, 90)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (184, 200)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (118, 134)) ('NF1', 'Gene', (98, 101)) ('NF1', 'Gene', '4763', (98, 101)) ('pheochromocytoma', 'Disease', (118, 134)) 52627 29172408 In conclusion, we identified a novel NF1c.6533delT mutation in a Korean patient with NF1 and pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('c.6533delT', 'Var', (40, 50)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (93, 109)) ('NF1', 'Gene', (37, 40)) ('NF1', 'Gene', (85, 88)) ('patient', 'Species', '9606', (72, 79)) ('NF1', 'Gene', '4763', (37, 40)) ('NF1', 'Gene', '4763', (85, 88)) ('c.6533delT', 'DELETION', 'None', (40, 50)) ('pheochromocytoma', 'Disease', (93, 109)) 52637 28986400 Our results confirmed that non-selective alpha-blockade produced a more significant anti-hypertensive effect than selective alpha-blockade. ('hypertensive', 'Disease', (89, 101)) ('non-selective', 'Var', (27, 40)) ('hypertensive', 'Disease', 'MESH:D006973', (89, 101)) 52648 28986400 Because new receptors are constantly being made, the effects of non-selective alpha-blockade do not last its half-life (24 h); therefore, patients must take the medication every 8-12 h. Also, non-selective alpha-blockade may cause side effects such as orthostatic hypotension, reflex tachycardia and nasal congestion because of the inhibition of alpha2 receptors. ('tachycardia', 'Disease', (284, 295)) ('orthostatic hypotension', 'Disease', 'MESH:D007024', (252, 275)) ('nasal congestion', 'Disease', (300, 316)) ('tachycardia', 'Disease', 'MESH:D013610', (284, 295)) ('nasal congestion', 'Phenotype', 'HP:0001742', (300, 316)) ('hypotension', 'Phenotype', 'HP:0002615', (264, 275)) ('orthostatic hypotension', 'Disease', (252, 275)) ('non-selective alpha-blockade', 'Var', (192, 220)) ('inhibition', 'NegReg', (332, 342)) ('cause', 'Reg', (225, 230)) ('tachycardia', 'Phenotype', 'HP:0001649', (284, 295)) ('patients', 'Species', '9606', (138, 146)) ('orthostatic hypotension', 'Phenotype', 'HP:0001278', (252, 275)) ('alpha2 receptors', 'Protein', (346, 362)) 52721 28986400 As stated, non-selective alpha-blockade provides more obvious preventive effects by irreversible receptor binding, more immediate effects and a significant anti-hypertensive effect. ('hypertensive', 'Disease', (161, 173)) ('hypertensive', 'Disease', 'MESH:D006973', (161, 173)) ('non-selective', 'Var', (11, 24)) ('alpha-blockade', 'Protein', (25, 39)) 52725 28986400 Our results confirmed that non-selective alpha-blockade produced a more significant anti-hypertensive effect compared with selective alpha-blockade, for both systolic and diastolic blood pressure. ('hypertensive', 'Disease', (89, 101)) ('non-selective', 'Var', (27, 40)) ('hypertensive', 'Disease', 'MESH:D006973', (89, 101)) ('systolic and', 'MPA', (158, 170)) 52745 28986400 Multiple endocrine neoplasia II can be associated with mutation in the RET gene. ('Multiple endocrine neoplasia II', 'Disease', 'MESH:D009377', (0, 31)) ('Multiple endocrine neoplasia II', 'Disease', (0, 31)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (9, 28)) ('neoplasia', 'Phenotype', 'HP:0002664', (19, 28)) ('RET', 'Gene', '5979', (71, 74)) ('associated', 'Reg', (39, 49)) ('mutation', 'Var', (55, 63)) ('RET', 'Gene', (71, 74)) 52752 28986400 Our study of selective vs non-selective alpha-blockade for preoperative preparation of 526 patients undergoing open adrenalectomy for PPGL confirmed that non-selective alpha-blockade resulted in a more significant anti-hypertensive effect than selective alpha-blockade. ('patients', 'Species', '9606', (91, 99)) ('hypertensive', 'Disease', 'MESH:D006973', (219, 231)) ('hypertensive', 'Disease', (219, 231)) ('PPGL', 'Chemical', '-', (134, 138)) ('non-selective', 'Var', (154, 167)) 52797 25428406 Conversely, the use of beta-blockade before sufficient alpha-blockade would precipitate or worsen a pheochromocytoma crisis. ('pheochromocytoma', 'Disease', 'MESH:D010673', (100, 116)) ('use', 'Var', (16, 19)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (100, 116)) ('beta-blockade', 'Var', (23, 36)) ('worsen', 'NegReg', (91, 97)) ('precipitate', 'Reg', (76, 87)) ('pheochromocytoma', 'Disease', (100, 116)) 52801 25428406 A catecholaminesurge in these patients may also lead to myocardial hibernation or myocardial stunning. ('myocardial stunning', 'Disease', (82, 101)) ('catecholamines', 'Chemical', 'MESH:D002395', (2, 16)) ('myocardial', 'Disease', (56, 66)) ('patients', 'Species', '9606', (30, 38)) ('lead to', 'Reg', (48, 55)) ('catecholaminesurge', 'Var', (2, 20)) 52843 28900474 The presence of a malignant paraganglioma in the paediatric age group makes it necessary to define the biochemical phenotype and family history, since it may be part of a syndromic condition, as in the case of mutations in the gene that codes for the enzyme succinate dehydrogenase B subunit SDHB), C (SDHC) or D (SDHD). ('syndromic condition', 'Disease', 'MESH:D009135', (171, 190)) ('SDHB', 'Gene', (292, 296)) ('SDHD', 'Gene', '6392', (314, 318)) ('mutations', 'Var', (210, 219)) ('SDHC', 'Gene', '6391', (302, 306)) ('malignant paraganglioma', 'Disease', (18, 41)) ('SDHD', 'Gene', (314, 318)) ('paraganglioma', 'Phenotype', 'HP:0002668', (28, 41)) ('SDHC', 'Gene', (302, 306)) ('malignant paraganglioma', 'Disease', 'MESH:C565335', (18, 41)) ('SDHB', 'Gene', '6390', (292, 296)) ('syndromic condition', 'Disease', (171, 190)) 52847 28099363 Different RET gene mutation-induced multiple endocrine neoplasia type 2A in 3 Chinese families Multiple endocrine neoplasia type 2A (MEN2A) is a condition with inherited autosomal dominant mutations in RET (rearranged during transfection) gene that predisposes the carrier to extremely high risk of medullary thyroid cancer (MTC) and other MEN2A-associated tumors such as parathyroid cancer and/or pheochromocytoma. ('MEN2A', 'Gene', (340, 345)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (398, 414)) ('MEN2A', 'Gene', '5979', (340, 345)) ('predisposes', 'Reg', (249, 260)) ('Multiple endocrine neoplasia type 2A', 'Gene', (95, 131)) ('tumors', 'Phenotype', 'HP:0002664', (357, 363)) ('rearranged during transfection', 'Gene', (207, 237)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (299, 323)) ('parathyroid cancer', 'Disease', 'MESH:D010282', (372, 390)) ('RET', 'Gene', (202, 205)) ('parathyroid cancer', 'Disease', (372, 390)) ('rearranged during transfection', 'Gene', '5979', (207, 237)) ('multiple endocrine neoplasia type 2A', 'Gene', (36, 72)) ('multiple endocrine neoplasia type 2A', 'Gene', '5979', (36, 72)) ('tumor', 'Phenotype', 'HP:0002664', (357, 362)) ('tumors', 'Disease', (357, 363)) ('cancer', 'Phenotype', 'HP:0002664', (384, 390)) ('neoplasia', 'Phenotype', 'HP:0002664', (114, 123)) ('parathyroid cancer', 'Phenotype', 'HP:0006780', (372, 390)) ('RET', 'Gene', (10, 13)) ('mutations', 'Var', (189, 198)) ('thyroid cancer', 'Disease', (309, 323)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (45, 64)) ('Multiple endocrine neoplasia type 2A', 'Gene', '5979', (95, 131)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (104, 123)) ('mutation-induced', 'Var', (19, 35)) ('tumors', 'Disease', 'MESH:D009369', (357, 363)) ('RET', 'Gene', '5979', (10, 13)) ('cancer', 'Phenotype', 'HP:0002664', (317, 323)) ('thyroid cancer', 'Disease', 'MESH:D013964', (376, 390)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (309, 323)) ('RET', 'Gene', '5979', (202, 205)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (398, 414)) ('thyroid cancer', 'Disease', 'MESH:D013964', (309, 323)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (376, 390)) ('neoplasia', 'Phenotype', 'HP:0002664', (55, 64)) ('MTC', 'Phenotype', 'HP:0002865', (325, 328)) ('MEN2A', 'Gene', '5979', (133, 138)) ('pheochromocytoma', 'Disease', (398, 414)) ('MEN2A', 'Gene', (133, 138)) 52850 28099363 Different mutations in the RET gene were identified: C634S in Family 1, C611Y in Family 2, and C634Y in Family 3. ('C634S', 'Mutation', 'rs75076352', (53, 58)) ('RET', 'Gene', (27, 30)) ('C634Y', 'Mutation', 'rs75996173', (95, 100)) ('C611Y', 'Var', (72, 77)) ('C634Y', 'Var', (95, 100)) ('C634S', 'Var', (53, 58)) ('C611Y', 'Mutation', 'rs377767397', (72, 77)) 52857 28099363 FMTC is associated with simple medullary thyroid carcinoma. ('carcinoma', 'Phenotype', 'HP:0030731', (49, 58)) ('FMTC', 'Var', (0, 4)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (41, 58)) ('associated', 'Reg', (8, 18)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (31, 58)) ('MTC', 'Phenotype', 'HP:0002865', (1, 4)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (41, 58)) ('thyroid carcinoma', 'Disease', (41, 58)) 52859 28099363 Of these, more than 95% of MEN2A cases present a single point mutation in the RET gene. ('RET', 'Gene', (78, 81)) ('MEN2A', 'Gene', (27, 32)) ('single point mutation', 'Var', (49, 70)) ('MEN2A', 'Gene', '5979', (27, 32)) 52863 28099363 In the wild-type RET, phosphorylation of its tyrosine kinase domain stimulates the receptor and consequently the downstream signaling pathways. ('tyrosine', 'Chemical', 'MESH:D014443', (45, 53)) ('receptor', 'Pathway', (83, 91)) ('downstream signaling pathways', 'Pathway', (113, 142)) ('stimulates', 'PosReg', (68, 78)) ('phosphorylation', 'Var', (22, 37)) 52864 28099363 However, nucleotide mutations in 7 exons (exons 8, 10, 11, 13, 14, 15, or 16) of the RET gene resulting in Cys to Tyr in the RET protein have been found. ('Cys to Tyr in the RET protein', 'MPA', (107, 136)) ('RET', 'Gene', (85, 88)) ('Tyr', 'Chemical', 'MESH:D014443', (114, 117)) ('nucleotide mutations', 'Var', (9, 29)) ('Cys', 'Chemical', 'MESH:D003545', (107, 110)) 52865 28099363 All these gain-of-function mutations lead to a constitutive activation of RET, which consequently causes hyperplasia and cancerization of the affected cells. ('mutations', 'Var', (27, 36)) ('RET', 'Protein', (74, 77)) ('causes', 'Reg', (98, 104)) ('cancer', 'Phenotype', 'HP:0002664', (121, 127)) ('hyperplasia', 'Disease', (105, 116)) ('activation', 'PosReg', (60, 70)) ('gain-of-function', 'PosReg', (10, 26)) ('cancerization', 'CPA', (121, 134)) ('hyperplasia', 'Disease', 'MESH:D006965', (105, 116)) 52868 28099363 Any 1 of the 5 cysteine residues (609, 611, 618, 620, and 634) in the cysteine-rich region of the RET extracellular domain can cause MEN2A and FMTC. ('cysteine', 'Chemical', 'MESH:D003545', (70, 78)) ('618', 'Var', (44, 47)) ('MTC', 'Phenotype', 'HP:0002865', (144, 147)) ('cause', 'Reg', (127, 132)) ('cysteine', 'Chemical', 'MESH:D003545', (15, 23)) ('FMTC', 'Disease', (143, 147)) ('MEN2A', 'Gene', '5979', (133, 138)) ('609', 'Var', (34, 37)) ('MEN2A', 'Gene', (133, 138)) 52869 28099363 Herein, we present the findings of different RET gene mutation-induced MEN2A in 3 Chinese families with diverse medical histories, as well as clinical, laboratory, and genetic characteristics. ('MEN2A', 'Gene', (71, 76)) ('mutation-induced', 'Var', (54, 70)) ('RET gene', 'Gene', (45, 53)) ('MEN2A', 'Gene', '5979', (71, 76)) 52887 28099363 Total DNA isolated from the peripheral blood of all the probands was used for screening the potential mutations in the following genes: SDHAF2 (succinate dehydrogenase complex assembly factor 2), SDHB (succinate dehydrogenase subunit B), SDHC (succinate dehydrogenase subunit C), SDHD (succinate dehydrogenase subunit D), MAX (MYC associated factor X), NF1 (neurofibromin 1), RET, and VHL (Von Hippel-Lindau) using Target Capture-Based Deep Sequencing (BGI Health, Shenzhen, Guangdong, China). ('SDHD', 'Gene', (280, 284)) ('SDHB', 'Gene', '6390', (196, 200)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', '54949', (144, 193)) ('SDHAF2', 'Gene', (136, 142)) ('SDHAF2', 'Gene', '54949', (136, 142)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (202, 235)) ('succinate dehydrogenase subunit C', 'Gene', (244, 277)) ('mutations', 'Var', (102, 111)) ('VHL', 'Gene', (385, 388)) ('succinate dehydrogenase subunit D', 'Gene', '6392', (286, 319)) ('NF1', 'Gene', '4763', (353, 356)) ('SDHB', 'Gene', (196, 200)) ('SDHC', 'Gene', '6391', (238, 242)) ('Von Hippel-Lindau', 'Gene', '7428', (390, 407)) ('MAX', 'Gene', '4149', (322, 325)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', (144, 193)) ('Von Hippel-Lindau', 'Gene', (390, 407)) ('MYC associated factor X', 'Gene', (327, 350)) ('succinate dehydrogenase subunit B', 'Gene', (202, 235)) ('NF1', 'Gene', (353, 356)) ('VHL', 'Gene', '7428', (385, 388)) ('neurofibromin 1', 'Gene', '4763', (358, 373)) ('MYC associated factor X', 'Gene', '4149', (327, 350)) ('SDHD', 'Gene', '6392', (280, 284)) ('succinate dehydrogenase subunit C', 'Gene', '6391', (244, 277)) ('neurofibromin 1', 'Gene', (358, 373)) ('SDHC', 'Gene', (238, 242)) ('MAX', 'Gene', (322, 325)) ('succinate dehydrogenase subunit D', 'Gene', (286, 319)) 52892 28099363 The mutation in the RET gene in proband 1 was Cys634Ser (Fig. ('RET', 'Gene', (20, 23)) ('Cys634Ser', 'SUBSTITUTION', 'None', (46, 55)) ('Cys634Ser', 'Var', (46, 55)) 52903 28099363 Proband 1 (Cys634Ser) mainly showed pheochromocytoma with MTC being indicated, proband 2 (Cys611Tyr) presented MTC and pheochromocytoma, whereas the only symptom of proband 3 (Cys634Tyr) was MTC. ('Cys634Ser', 'Var', (11, 20)) ('Cys611Tyr', 'Var', (90, 99)) ('Cys634Tyr', 'Var', (176, 185)) ('MTC', 'Phenotype', 'HP:0002865', (58, 61)) ('pheochromocytoma', 'Disease', (36, 52)) ('Cys634Tyr', 'SUBSTITUTION', 'None', (176, 185)) ('pheochromocytoma', 'Disease', (119, 135)) ('Cys611Tyr', 'SUBSTITUTION', 'None', (90, 99)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (36, 52)) ('Cys634Ser', 'SUBSTITUTION', 'None', (11, 20)) ('MTC', 'Phenotype', 'HP:0002865', (111, 114)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (36, 52)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (119, 135)) ('MTC', 'Phenotype', 'HP:0002865', (191, 194)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (119, 135)) ('MTC', 'Disease', (111, 114)) 52905 28099363 Therefore, we concluded that the cysteine substitution by tyrosine was predisposed to induce MTC, which metastasized easily while the cysteine substitution by serine was inclined to induce pheochromocytoma. ('pheochromocytoma', 'Disease', 'MESH:D010673', (189, 205)) ('cysteine substitution by tyrosine', 'Var', (33, 66)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (189, 205)) ('tyrosine', 'Chemical', 'MESH:D014443', (58, 66)) ('MTC', 'Phenotype', 'HP:0002865', (93, 96)) ('cysteine', 'Chemical', 'MESH:D003545', (33, 41)) ('induce MTC', 'Disease', (86, 96)) ('serine', 'Chemical', 'MESH:D012694', (159, 165)) ('cysteine', 'Chemical', 'MESH:D003545', (134, 142)) ('MTC', 'Disease', (93, 96)) ('pheochromocytoma', 'Disease', (189, 205)) 52907 28099363 In this case report, we presented the clinical, laboratory, and genetic characteristics of 3 Chinese families with different RET gene mutation-induced MEN2A. ('RET gene', 'Gene', (125, 133)) ('MEN2A', 'Gene', '5979', (151, 156)) ('MEN2A', 'Gene', (151, 156)) ('mutation-induced', 'Var', (134, 150)) 52908 28099363 The 3 probands harbor Cys634Ser, Cys611Tyr, and Cys634Tyr mutations in the gene, respectively. ('Cys634Ser', 'SUBSTITUTION', 'None', (22, 31)) ('Cys634Tyr', 'Var', (48, 57)) ('Cys611Tyr', 'Var', (33, 42)) ('Cys634Ser', 'Var', (22, 31)) ('Cys634Tyr', 'SUBSTITUTION', 'None', (48, 57)) ('Cys611Tyr', 'SUBSTITUTION', 'None', (33, 42)) 52912 28099363 Of the 3 RET gene mutation-induced MEN2A syndromes reported in this study, 2 included the mutation on residue 634 and the third on residue 611; however, they showed diverse phenotypes. ('MEN2A', 'Gene', (35, 40)) ('mutation on residue 634', 'Var', (90, 113)) ('RET gene', 'Gene', (9, 17)) ('MEN2A', 'Gene', '5979', (35, 40)) 52913 28099363 Carlomagno et al found that different phenotypes of MEN2A and FMTC resulting from Cys-634 mutation of MEN2A could lead to higher activity of RET as compared to Cys-620 mutation of FMTC. ('RET', 'Enzyme', (141, 144)) ('MEN2A', 'Gene', (102, 107)) ('MTC', 'Phenotype', 'HP:0002865', (181, 184)) ('Cys-634 mutation', 'Var', (82, 98)) ('higher', 'PosReg', (122, 128)) ('MTC', 'Phenotype', 'HP:0002865', (63, 66)) ('MEN2A', 'Gene', '5979', (52, 57)) ('Cys', 'Chemical', 'MESH:D003545', (160, 163)) ('MEN2A', 'Gene', (52, 57)) ('Cys', 'Chemical', 'MESH:D003545', (82, 85)) ('activity', 'MPA', (129, 137)) ('MEN2A', 'Gene', '5979', (102, 107)) 52914 28099363 Conversely, the alteration of only certain amino acids (634 in MEN2A and 918 in MEN2B) effectuates a sufficiently high RET stimulation to cause a neoplastic transformation of adrenal chromaffin cells, indicating that even in the MEN2A phenotype, pheochromocytomas have been observed less frequently than MTCs. ('MEN2A', 'Gene', '5979', (63, 68)) ('neoplastic transformation', 'CPA', (146, 171)) ('MTC', 'Phenotype', 'HP:0002865', (304, 307)) ('MEN2A', 'Gene', (63, 68)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (246, 262)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (246, 263)) ('MEN2B', 'Gene', (80, 85)) ('cause', 'Reg', (138, 143)) ('chromaffin', 'Chemical', '-', (183, 193)) ('MEN2B', 'Gene', '5979', (80, 85)) ('MEN2A', 'Gene', '5979', (229, 234)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (246, 263)) ('634', 'Var', (56, 59)) ('MEN2A', 'Gene', (229, 234)) ('pheochromocytomas', 'Disease', (246, 263)) ('alteration', 'Var', (16, 26)) 52916 28099363 This exhibition of phenotype at different ages could be attributed to the proband and her sister showing increased sensitivity to the Cys611Tyr mutation than their mother. ('Cys611Tyr', 'SUBSTITUTION', 'None', (134, 143)) ('Cys611Tyr', 'Var', (134, 143)) ('sensitivity', 'MPA', (115, 126)) ('increased', 'PosReg', (105, 114)) 52918 28099363 Moreover, the expression of dominant-negative forms of AKT has been recently reported to inhibit RET-MEN2A oncogenic activity, indicating that the second family members could harbor different AKT activities. ('AKT', 'Gene', (192, 195)) ('AKT', 'Gene', (55, 58)) ('dominant-negative', 'Var', (28, 45)) ('AKT', 'Gene', '207', (192, 195)) ('MEN2A', 'Gene', '5979', (101, 106)) ('inhibit', 'NegReg', (89, 96)) ('MEN2A', 'Gene', (101, 106)) ('AKT', 'Gene', '207', (55, 58)) 52922 28099363 For the same reason, screening of RET mutation and prediction of MEN2 with high-risk of pheochromocytoma should be carried out at the earliest. ('pheochromocytoma', 'Disease', (88, 104)) ('MEN', 'Species', '9606', (65, 68)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (88, 104)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (88, 104)) ('mutation', 'Var', (38, 46)) 52924 28099363 In the case of MEN2A patients with early manifestation of pheochromocytoma, screening and confirming the RET mutation followed by a timely treatment at an early stage is suggested to prevent the development of MTC. ('RET', 'Gene', (105, 108)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (58, 74)) ('MTC', 'Phenotype', 'HP:0002865', (210, 213)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (58, 74)) ('patients', 'Species', '9606', (21, 29)) ('MEN2A', 'Gene', (15, 20)) ('MEN2A', 'Gene', '5979', (15, 20)) ('pheochromocytoma', 'Disease', (58, 74)) ('mutation', 'Var', (109, 117)) 52926 28099363 In order to improve prognosis, thyroidectomy should be conducted by 5 to 10 years of age in children carrying the RET gene mutations at codons 609, 630, 768, 790, 791, 804, and 891 (referred as level 1). ('RET gene', 'Gene', (114, 122)) ('children', 'Species', '9606', (92, 100)) ('mutations', 'Var', (123, 132)) 52931 28099363 Therefore, transgenic mice carrying each of these 3 mutations could be established and used for studying the underlying mechanisms in RET gene mutation-induced MEN2A. ('mutation-induced', 'Var', (143, 159)) ('transgenic mice', 'Species', '10090', (11, 26)) ('MEN2A', 'Gene', (160, 165)) ('RET gene', 'Gene', (134, 142)) ('MEN2A', 'Gene', '5979', (160, 165)) 52932 28099363 We might also aspire to explore the diverse functions and phenotypes by transfecting thyroid or chromaffin cell lines with plasmids expressing different RET mutations. ('chromaffin', 'Chemical', '-', (96, 106)) ('mutations', 'Var', (157, 166)) ('RET', 'Gene', (153, 156)) 52978 26649218 Deep biopsy may cause uncontrolled bleeding and require tracheotomy. ('bleeding', 'Disease', (35, 43)) ('bleeding', 'Disease', 'MESH:D006470', (35, 43)) ('Deep biopsy', 'Var', (0, 11)) ('cause', 'Reg', (16, 21)) 52993 26649218 Apart from characterizing a lesion as neuroendocrine tumor, 68Ga-DOTA-peptide PET/CT can reveal extension of disease and exclude synchronous and metastatic lesions. ('68Ga-DOTA-peptide', 'Var', (60, 77)) ('neuroendocrine tumor', 'Disease', 'MESH:D018358', (38, 58)) ('extension', 'Disease', (96, 105)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (38, 58)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('neuroendocrine tumor', 'Disease', (38, 58)) ('exclude', 'NegReg', (121, 128)) 53013 26543766 Hereditary HNPGLs are mostly caused by mutations of the SDHD gene, but SDHB and SDHC mutations are not uncommon in such patients. ('SDHD', 'Gene', (56, 60)) ('SDHD', 'Gene', '6392', (56, 60)) ('caused by', 'Reg', (29, 38)) ('PGLs', 'Phenotype', 'HP:0002668', (13, 17)) ('SDHB', 'Gene', '6390', (71, 75)) ('mutations', 'Var', (39, 48)) ('SDHB', 'Gene', (71, 75)) ('SDHC', 'Gene', (80, 84)) ('patients', 'Species', '9606', (120, 128)) ('HNPGLs', 'Phenotype', 'HP:0002864', (11, 17)) ('SDHC', 'Gene', '6391', (80, 84)) ('Hereditary HNPGLs', 'Disease', (0, 17)) 53014 26543766 Multiple head and neck paragangliomas are common in patients with SDHD mutations, while malignant head and neck paraganglioma is mostly seen in patients with SDHB mutations (Burnichon et al. ('SDHB', 'Gene', '6390', (158, 162)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (98, 125)) ('paragangliomas', 'Phenotype', 'HP:0002668', (23, 37)) ('SDHD', 'Gene', (66, 70)) ('paraganglioma', 'Phenotype', 'HP:0002668', (23, 36)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (9, 36)) ('mutations', 'Var', (71, 80)) ('neck paragangliomas', 'Disease', (18, 37)) ('SDHB', 'Gene', (158, 162)) ('common', 'Reg', (42, 48)) ('patients', 'Species', '9606', (52, 60)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (18, 36)) ('neck paraganglioma', 'Disease', (107, 125)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (107, 125)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (9, 37)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (18, 37)) ('patients', 'Species', '9606', (144, 152)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (18, 37)) ('SDHD', 'Gene', '6392', (66, 70)) ('paraganglioma', 'Phenotype', 'HP:0002668', (112, 125)) 53077 26543766 Recurrent genetic alterations have so far been reported for thymomas as well as for thymic squamous cell carcinoma. ('genetic alterations', 'Var', (10, 29)) ('thymoma', 'Phenotype', 'HP:0100522', (60, 67)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (91, 114)) ('carcinoma', 'Phenotype', 'HP:0030731', (105, 114)) ('thymomas', 'Disease', (60, 68)) ('squamous cell carcinoma', 'Disease', (91, 114)) ('thymomas', 'Disease', 'MESH:D013945', (60, 68)) ('squamous cell carcinoma', 'Disease', 'MESH:D002294', (91, 114)) ('reported', 'Reg', (47, 55)) 53078 26543766 Deletions of chromosome 6p are reported with type A thymoma and gains of chromosome 1q and losses of chromosomes 6 and 13q are reported with type B3 thymomas (Zettl et al.). ('thymoma', 'Phenotype', 'HP:0100522', (149, 156)) ('thymoma', 'Phenotype', 'HP:0100522', (52, 59)) ('type B3 thymomas', 'Disease', 'MESH:D013945', (141, 157)) ('type A thymoma', 'Disease', (45, 59)) ('losses', 'NegReg', (91, 97)) ('type A thymoma', 'Disease', 'MESH:D013945', (45, 59)) ('gains', 'PosReg', (64, 69)) ('type B3 thymomas', 'Disease', (141, 157)) ('Deletions', 'Var', (0, 9)) 53082 26543766 Only 2 % of PGLs are found in the mediastinum and are associated with germ line mutations in either SDHB or SDHD. ('SDHD', 'Gene', '6392', (108, 112)) ('PGLs', 'Phenotype', 'HP:0002668', (12, 16)) ('mutations', 'Var', (80, 89)) ('SDHB', 'Gene', '6390', (100, 104)) ('SDHB', 'Gene', (100, 104)) ('associated', 'Reg', (54, 64)) ('SDHD', 'Gene', (108, 112)) 53086 26543766 Mutations in the genes encoding succinate dehydrogenase (SDH) subunits B, C, and D cause extra-adrenal PGLs. ('SDH', 'Gene', (57, 60)) ('extra-adrenal PGLs', 'Disease', (89, 107)) ('Mutations', 'Var', (0, 9)) ('cause', 'Reg', (83, 88)) ('PGLs', 'Phenotype', 'HP:0002668', (103, 107)) ('succinate dehydrogenase', 'Gene', '6390', (32, 55)) ('SDH', 'Gene', '6390', (57, 60)) ('succinate dehydrogenase', 'Gene', (32, 55)) 53110 23853620 Cocaine can block the reuptake of noradrenaline, leading to increasing its concentration and consequently its effects as well, and induce local or diffuse coronary vasoconstriction in normal coronary artery segments per se, cocaine can also trigger pheochromocytoma crisis, and therefore, cardiac complications such as myocardial infarction due to these additive effects are intended to occur. ('concentration', 'MPA', (75, 88)) ('myocardial infarction', 'Disease', (319, 340)) ('cardiac complications', 'Disease', (289, 310)) ('cocaine', 'Var', (224, 231)) ('reuptake', 'MPA', (22, 30)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (319, 340)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (249, 265)) ('trigger', 'Reg', (241, 248)) ('local', 'MPA', (138, 143)) ('myocardial infarction', 'Disease', 'MESH:D009203', (319, 340)) ('pheochromocytoma', 'Disease', (249, 265)) ('increasing', 'PosReg', (60, 70)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (249, 265)) ('Cocaine', 'Chemical', 'MESH:D003042', (0, 7)) ('noradrenaline', 'Chemical', 'MESH:D009638', (34, 47)) ('induce', 'Reg', (131, 137)) ('cardiac complications', 'Disease', 'MESH:D005117', (289, 310)) ('effects', 'MPA', (110, 117)) ('cocaine', 'Chemical', 'MESH:D003042', (224, 231)) 53142 23853620 Similarly, many conditions such as tricyclic antidepressant consumption, drugs stimulating adrenergic receptors, dopamine antagonists, many drugs prescribed for obesity and other over the counter medications such as nasal decongestants containing ephedrine, pseudoephedrine, or phenylproanolamine can also precipitate myocardial infarction in individuals with underlying pheochromocytomas. ('pheochromocytomas', 'Disease', (371, 388)) ('obesity', 'Phenotype', 'HP:0001513', (161, 168)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (318, 339)) ('phenylproanolamine', 'Var', (278, 296)) ('precipitate', 'Reg', (306, 317)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (371, 388)) ('obesity', 'Disease', (161, 168)) ('pseudoephedrine', 'Chemical', 'MESH:D054199', (258, 273)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (371, 388)) ('obesity', 'Disease', 'MESH:D009765', (161, 168)) ('phenylproanolamine', 'Chemical', '-', (278, 296)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (371, 387)) ('ephedrine', 'Chemical', 'MESH:D004809', (247, 256)) ('myocardial infarction', 'Disease', (318, 339)) ('dopamine', 'Chemical', 'MESH:D004298', (113, 121)) ('myocardial infarction', 'Disease', 'MESH:D009203', (318, 339)) ('drugs', 'Var', (73, 78)) ('ephedrine', 'Chemical', 'MESH:D004809', (264, 273)) 53200 22974104 SDHA loss of function mutations in a subset of young adult wild-type gastrointestinal stromal tumors A subset of KIT/PDGFRA wild-type gastrointestinal stromal tumors (WT GIST) have been associated with alteration of the succinate dehydrogenase (SDH) complex II function. ('PDGFRA', 'Gene', (117, 123)) ('PDGFRA', 'Gene', '5156', (117, 123)) ('gastrointestinal stromal tumors', 'Disease', (69, 100)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('tumors', 'Phenotype', 'HP:0002664', (94, 100)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (134, 165)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (134, 165)) ('SDHA', 'Gene', (0, 4)) ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('SDHA', 'Gene', '6389', (0, 4)) ('GIST', 'Phenotype', 'HP:0100723', (170, 174)) ('gastrointestinal stromal tumors', 'Disease', (134, 165)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (69, 100)) ('mutations', 'Var', (22, 31)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (69, 100)) ('succinate dehydrogenase', 'Gene', '6389', (220, 243)) ('SDH', 'Gene', (245, 248)) ('succinate dehydrogenase', 'Gene', (220, 243)) ('tumors', 'Phenotype', 'HP:0002664', (159, 165)) ('loss of function', 'NegReg', (5, 21)) 53201 22974104 A recent report identified four non-syndromic, KIT/PDGFRA WT GIST harboring compound heterozygous or homozygous mutations in SDHA encoding the main subunit of the SDH complex II. ('SDHA', 'Gene', '6389', (125, 129)) ('GIST', 'Phenotype', 'HP:0100723', (61, 65)) ('PDGFRA WT GIST', 'Gene', '5156', (51, 65)) ('PDGFRA WT GIST', 'Gene', (51, 65)) ('SDHA', 'Gene', (125, 129)) ('mutations', 'Var', (112, 121)) 53202 22974104 A germline p.Arg31X nonsense SDHA mutation was identified in one of the six cases tested by SOLiD platform. ('SDHA', 'Gene', '6389', (29, 33)) ('p.Arg31X', 'Var', (11, 19)) ('p.Arg31X', 'Mutation', 'rs142441643', (11, 19)) ('SDHA', 'Gene', (29, 33)) 53203 22974104 An additional p.D38V missense mutation in SDHA exon 2 was identified by Sanger sequencing in the extended KIT/PDGFRA WT GIST patients cohort. ('p.D38V missense', 'Var', (14, 29)) ('SDHA', 'Gene', (42, 46)) ('p.D38V', 'Mutation', 'rs34635677', (14, 20)) ('GIST', 'Phenotype', 'HP:0100723', (120, 124)) ('PDGFRA WT GIST', 'Gene', '5156', (110, 124)) ('PDGFRA WT GIST', 'Gene', (110, 124)) ('SDHA', 'Gene', '6389', (42, 46)) ('patients', 'Species', '9606', (125, 133)) 53204 22974104 Western blotting showed loss of SDHA expression in the two cases harboring SDHA mutations, while expression being retained in the other WT GIST tumors. ('SDHA', 'Gene', (75, 79)) ('GIST', 'Phenotype', 'HP:0100723', (139, 143)) ('tumors', 'Phenotype', 'HP:0002664', (144, 150)) ('SDHA', 'Gene', '6389', (32, 36)) ('WT GIST tumors', 'Disease', (136, 150)) ('mutations', 'Var', (80, 89)) ('WT GIST tumors', 'Disease', 'MESH:D046152', (136, 150)) ('SDHA', 'Gene', '6389', (75, 79)) ('SDHA', 'Gene', (32, 36)) ('expression', 'MPA', (37, 47)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) ('loss', 'NegReg', (24, 28)) 53207 22974104 Mutations of the SDH complex II are more particularly associated with KIT/PDGFRA WT GIST occurring in young adults. ('PDGFRA WT GIST', 'Gene', (74, 88)) ('SDH complex', 'Gene', (17, 28)) ('GIST', 'Phenotype', 'HP:0100723', (84, 88)) ('Mutations', 'Var', (0, 9)) ('associated', 'Reg', (54, 64)) ('PDGFRA WT GIST', 'Gene', '5156', (74, 88)) 53209 22974104 The majority of gastrointestinal stromal tumors (GIST) harbor gain-of-function mutations in KIT or PDGFRA, resulting in the activation of the downstream pathways PI3K/AKT, Ras/MAPK, and JAK/STAT3, and playing a crucial role in tumorigenesis. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('activation', 'PosReg', (124, 134)) ('tumor', 'Disease', (227, 232)) ('STAT3', 'Gene', (190, 195)) ('gain-of-function', 'PosReg', (62, 78)) ('KIT', 'Gene', (92, 95)) ('tumor', 'Disease', 'MESH:D009369', (227, 232)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (16, 47)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (16, 47)) ('mutations', 'Var', (79, 88)) ('PI3K/AKT', 'Pathway', (162, 170)) ('STAT3', 'Gene', '6774', (190, 195)) ('PDGFRA', 'Gene', '5156', (99, 105)) ('PDGFRA', 'Gene', (99, 105)) ('tumor', 'Phenotype', 'HP:0002664', (227, 232)) ('tumor', 'Disease', (41, 46)) ('gastrointestinal stromal tumors', 'Disease', (16, 47)) ('GIST', 'Phenotype', 'HP:0100723', (49, 53)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) ('tumors', 'Phenotype', 'HP:0002664', (41, 47)) ('Ras/MAPK', 'Pathway', (172, 180)) 53210 22974104 A subset of GIST lack specific KIT or PDGFRA mutations and form a heterogeneous group, including NF1, Carney Triad (CT), Carney-Stratakis Syndrome (CSS), pediatric and young adult GIST, and a small proportion (<10%) of sporadic adult GIST. ('Carney-Stratakis Syndrome', 'Disease', 'MESH:C564650', (121, 146)) ('NF1', 'Gene', (97, 100)) ('mutations', 'Var', (45, 54)) ('KIT', 'Gene', (31, 34)) ('CSS', 'Disease', (148, 151)) ('PDGFRA', 'Gene', (38, 44)) ('NF1', 'Gene', '4763', (97, 100)) ('PDGFRA', 'Gene', '5156', (38, 44)) ('Carney Triad', 'Disease', (102, 114)) ('CSS', 'Disease', 'MESH:C536436', (148, 151)) ('GIST', 'Phenotype', 'HP:0100723', (12, 16)) ('GIST', 'Phenotype', 'HP:0100723', (234, 238)) ('Carney-Stratakis Syndrome', 'Disease', (121, 146)) ('GIST', 'Phenotype', 'HP:0100723', (180, 184)) 53211 22974104 The mechanisms involved in the tumorigenesis of GIST lacking KIT or PDGFRA mutations are still poorly understood. ('PDGFRA', 'Gene', (68, 74)) ('tumor', 'Phenotype', 'HP:0002664', (31, 36)) ('tumor', 'Disease', (31, 36)) ('mutations', 'Var', (75, 84)) ('GIST', 'Phenotype', 'HP:0100723', (48, 52)) ('tumor', 'Disease', 'MESH:D009369', (31, 36)) ('PDGFRA', 'Gene', '5156', (68, 74)) 53219 22974104 Loss of SDHB is also seen in WT GIST occuring in the context of CSS with genlius mutation of SDHB or SDHC (II). ('SDHB', 'Gene', '6390', (8, 12)) ('SDHB', 'Gene', (93, 97)) ('mutation', 'Var', (81, 89)) ('SDHB', 'Gene', (8, 12)) ('CSS', 'Disease', (64, 67)) ('SDHC', 'Gene', (101, 105)) ('CSS', 'Disease', 'MESH:C536436', (64, 67)) ('SDHC', 'Gene', '6391', (101, 105)) ('SDHB', 'Gene', '6390', (93, 97)) ('GIST', 'Phenotype', 'HP:0100723', (32, 36)) 53222 22974104 One possible explanation is loss of function mutations in the SDHA gene, which have been recently identified in four patients (one pediatric and 3 young adult) with sporadic GIST lacking KIT or PDGFRA mutations. ('mutations', 'Var', (45, 54)) ('SDHA', 'Gene', (62, 66)) ('GIST', 'Phenotype', 'HP:0100723', (174, 178)) ('PDGFRA', 'Gene', (194, 200)) ('PDGFRA', 'Gene', '5156', (194, 200)) ('patients', 'Species', '9606', (117, 125)) ('SDHA', 'Gene', '6389', (62, 66)) 53223 22974104 The aim of this study was to assess globally by next generation sequencing mutations in the SDH-pathway, as well as determine the mutational and expression status of SDHA in a series of syndromic and sporadic GIST without mutations in KIT or PDGFRA. ('SDHA', 'Gene', '6389', (166, 170)) ('GIST', 'Phenotype', 'HP:0100723', (209, 213)) ('SDHA', 'Gene', (166, 170)) ('KIT', 'Gene', (235, 238)) ('SDH-pathway', 'Gene', (92, 103)) ('mutations', 'Var', (75, 84)) ('PDGFRA', 'Gene', '5156', (242, 248)) ('PDGFRA', 'Gene', (242, 248)) 53235 22974104 Western blotting was performed to assess the expression of SDHA in WT GIST with and without SDHA mutation. ('SDHA', 'Gene', (59, 63)) ('SDHA', 'Gene', '6389', (92, 96)) ('SDHA', 'Gene', '6389', (59, 63)) ('mutation', 'Var', (97, 105)) ('SDHA', 'Gene', (92, 96)) ('GIST', 'Phenotype', 'HP:0100723', (70, 74)) 53236 22974104 Frozen tissue from seven WT GIST (two with SDHA mutation and five without SDHA mutation) were homogenized in RIPA buffer supplemented with protease and phosphatase inhibitors. ('RIPA buffer', 'Chemical', '-', (109, 120)) ('SDHA', 'Gene', '6389', (74, 78)) ('SDHA', 'Gene', '6389', (43, 47)) ('mutation', 'Var', (48, 56)) ('GIST', 'Phenotype', 'HP:0100723', (28, 32)) ('SDHA', 'Gene', (74, 78)) ('SDHA', 'Gene', (43, 47)) 53245 22974104 Massive parallel next-generation sequencing of six cases of WT GIST (five pediatric and one young adult) revealed that the GIST from the young adult patient (22 year-old man, with multinodular gastric lesions and multiple liver metastases) carried a C to T transition at nucleotide 206 in SDHA exon 2, a nonsense mutation resulting in the replacement of arginine with a stop codon at residue 31 of SDHA, causing truncation of the peptide chain at residue 30 (p.Arg31X) (Figure 1). ('SDHA', 'Gene', '6389', (289, 293)) ('replacement', 'Var', (339, 350)) ('multinodular gastric lesions', 'Disease', 'MESH:D013272', (180, 208)) ('multinodular gastric lesions', 'Disease', (180, 208)) ('SDHA', 'Gene', (398, 402)) ('metastases', 'Disease', (228, 238)) ('GIST', 'Phenotype', 'HP:0100723', (123, 127)) ('p.Arg31X', 'Mutation', 'rs142441643', (459, 467)) ('SDHA', 'Gene', (289, 293)) ('causing', 'Reg', (404, 411)) ('truncation', 'MPA', (412, 422)) ('arginine', 'Chemical', 'MESH:D001120', (354, 362)) ('metastases', 'Disease', 'MESH:D009362', (228, 238)) ('patient', 'Species', '9606', (149, 156)) ('GIST', 'Phenotype', 'HP:0100723', (63, 67)) ('C to T transition at nucleotide 206', 'Mutation', 'rs886043564', (250, 285)) ('SDHA', 'Gene', '6389', (398, 402)) ('man', 'Species', '9606', (170, 173)) 53249 22974104 Since two prior reports also identified mutations in SDHA exons 9 and 13 in WT GIST, we performed targeted SDHA exons 2, 9 and 13 sequencing in 11 additional cases of pediatric and young adult WT GIST. ('SDHA', 'Gene', '6389', (107, 111)) ('GIST', 'Phenotype', 'HP:0100723', (196, 200)) ('SDHA', 'Gene', '6389', (53, 57)) ('SDHA', 'Gene', (107, 111)) ('mutations', 'Var', (40, 49)) ('GIST', 'Phenotype', 'HP:0100723', (79, 83)) ('SDHA', 'Gene', (53, 57)) 53250 22974104 By this method, another young adult WT GIST (26 year-old woman with bulky intra-peritoneal and liver metastatic disease) was identified to harbor a missense mutation in SDHA exon 2 (p. D38V)(Figure 2). ('liver metastatic disease', 'Disease', 'MESH:D008107', (95, 119)) ('GIST', 'Phenotype', 'HP:0100723', (39, 43)) ('SDHA', 'Gene', '6389', (169, 173)) ('woman', 'Species', '9606', (57, 62)) ('missense', 'Var', (148, 156)) ('liver metastatic disease', 'Disease', (95, 119)) ('D38V', 'SUBSTITUTION', 'None', (185, 189)) ('D38V', 'Var', (185, 189)) ('SDHA', 'Gene', (169, 173)) 53254 22974104 To confirm the functional impact of SDHA mutation, we assessed SDHA protein expression by western blotting in seven WT GISTs, including three samples from the two patients with SDHA mutation and four without SDHA mutation (Figure 3). ('patients', 'Species', '9606', (163, 171)) ('GIST', 'Phenotype', 'HP:0100723', (119, 123)) ('SDHA', 'Gene', '6389', (36, 40)) ('SDHA', 'Gene', '6389', (63, 67)) ('SDHA', 'Gene', (63, 67)) ('SDHA', 'Gene', '6389', (208, 212)) ('SDHA', 'Gene', '6389', (177, 181)) ('SDHA', 'Gene', (36, 40)) ('mutation', 'Var', (182, 190)) ('SDHA', 'Gene', (177, 181)) ('SDHA', 'Gene', (208, 212)) 53255 22974104 We found that SDHA expression was absent in the two cases harboring a mutation of SDHA and present in the other cases. ('SDHA', 'Gene', (14, 18)) ('SDHA', 'Gene', '6389', (82, 86)) ('mutation', 'Var', (70, 78)) ('absent', 'NegReg', (34, 40)) ('SDHA', 'Gene', '6389', (14, 18)) ('SDHA', 'Gene', (82, 86)) 53257 22974104 The WT GIST associated with a germline SDHA mutation showed complete loss of both SDHA and SDHB protein (Figure 4 A,B), while the tumor with a somatic, heterozygous SDHA mutation showed significant decreased in SDHA immuno-expression, as well as complete loss of SDHB (Figure 4 C,D). ('protein', 'Protein', (96, 103)) ('loss', 'NegReg', (69, 73)) ('mutation', 'Var', (44, 52)) ('SDHB', 'Gene', (263, 267)) ('SDHA', 'Gene', '6389', (82, 86)) ('GIST', 'Phenotype', 'HP:0100723', (7, 11)) ('tumor', 'Disease', (130, 135)) ('tumor', 'Disease', 'MESH:D009369', (130, 135)) ('decreased', 'NegReg', (198, 207)) ('SDHA', 'Gene', (39, 43)) ('loss', 'NegReg', (255, 259)) ('SDHA', 'Gene', (165, 169)) ('SDHB', 'Gene', '6390', (91, 95)) ('SDHA', 'Gene', '6389', (39, 43)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('SDHA', 'Gene', '6389', (165, 169)) ('SDHA', 'Gene', (211, 215)) ('SDHA', 'Gene', '6389', (211, 215)) ('SDHB', 'Gene', '6390', (263, 267)) ('SDHB', 'Gene', (91, 95)) ('SDHA', 'Gene', (82, 86)) 53259 22974104 Furthermore, both SDHA and SDHB expression was preserved in a control case of a young adult GIST carrying a KIT exon 11 deletion (Figure 4 G,H). ('GIST', 'Phenotype', 'HP:0100723', (92, 96)) ('SDHA', 'Gene', (18, 22)) ('KIT exon 11', 'Gene', (108, 119)) ('SDHB', 'Gene', '6390', (27, 31)) ('deletion', 'Var', (120, 128)) ('SDHB', 'Gene', (27, 31)) ('SDHA', 'Gene', '6389', (18, 22)) 53266 22974104 Mutations of one of the gene encoding these subunits impair the activity of this complex and lead to the stabilization and activation of HIF-1a, which in turn activates cell proliferation and angiogenesis. ('HIF-1a', 'Gene', '3091', (137, 143)) ('HIF-1a', 'Gene', (137, 143)) ('stabilization', 'MPA', (105, 118)) ('activates', 'PosReg', (159, 168)) ('angiogenesis', 'CPA', (192, 204)) ('Mutations', 'Var', (0, 9)) ('activity', 'MPA', (64, 72)) ('activation', 'PosReg', (123, 133)) ('cell proliferation', 'CPA', (169, 187)) ('impair', 'NegReg', (53, 59)) 53267 22974104 In addition to paragangliomas and pheochromocytomas, a number of other solid tumors have been associated with mutations in genes encoding the succinate dehydrogenase complex (SDH) complex II. ('succinate dehydrogenase', 'Gene', '6389', (142, 165)) ('tumors', 'Phenotype', 'HP:0002664', (77, 83)) ('solid tumors', 'Disease', (71, 83)) ('mutations', 'Var', (110, 119)) ('paragangliomas and pheochromocytomas', 'Disease', 'MESH:D010673', (15, 51)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (34, 50)) ('associated', 'Reg', (94, 104)) ('solid tumors', 'Disease', 'MESH:D009369', (71, 83)) ('succinate dehydrogenase', 'Gene', (142, 165)) ('tumor', 'Phenotype', 'HP:0002664', (77, 82)) ('paraganglioma', 'Phenotype', 'HP:0002668', (15, 28)) ('paragangliomas', 'Phenotype', 'HP:0002668', (15, 29)) 53270 22974104 This syndrome is associated with germline point mutations or large deletions of the genes encoding the SDHB, SDHC or SDHD subunits. ('SDHB', 'Gene', (103, 107)) ('SDHC', 'Gene', '6391', (109, 113)) ('associated', 'Reg', (17, 27)) ('SDHD', 'Gene', '6392', (117, 121)) ('large deletions', 'Var', (61, 76)) ('SDHC', 'Gene', (109, 113)) ('SDHB', 'Gene', '6390', (103, 107)) ('SDHD', 'Gene', (117, 121)) 53271 22974104 Strikingly, inactivating germline mutations in SDHB or SDHC genes have been also identified in sporadic WT GISTs occurring in patients without a personal or family history of paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (175, 188)) ('paraganglioma', 'Disease', (175, 188)) ('SDHB', 'Gene', '6390', (47, 51)) ('SDHC', 'Gene', (55, 59)) ('SDHB', 'Gene', (47, 51)) ('SDHC', 'Gene', '6391', (55, 59)) ('patients', 'Species', '9606', (126, 134)) ('paraganglioma', 'Disease', 'MESH:D010235', (175, 188)) ('GIST', 'Phenotype', 'HP:0100723', (107, 111)) ('identified', 'Reg', (81, 91)) ('inactivating germline mutations', 'Var', (12, 43)) 53273 22974104 Germline mutations in SDHA are associated with neurodegenerative diseases such as an early-onset encephalopathy, known as Leigh syndrome and a late-onset optic atrophy, ataxia and myopathy. ('Germline mutations', 'Var', (0, 18)) ('myopathy', 'Disease', 'MESH:D009135', (180, 188)) ('optic atrophy', 'Disease', (154, 167)) ('encephalopathy', 'Phenotype', 'HP:0001298', (97, 111)) ('optic atrophy', 'Phenotype', 'HP:0000648', (154, 167)) ('neurodegenerative diseases', 'Phenotype', 'HP:0002180', (47, 73)) ('neurodegenerative diseases', 'Disease', 'MESH:D019636', (47, 73)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (122, 136)) ('associated', 'Reg', (31, 41)) ('encephalopathy', 'Disease', (97, 111)) ('Leigh syndrome', 'Disease', (122, 136)) ('myopathy', 'Phenotype', 'HP:0003198', (180, 188)) ('myopathy', 'Disease', (180, 188)) ('ataxia', 'Phenotype', 'HP:0001251', (169, 175)) ('optic atrophy', 'Disease', 'MESH:D009896', (154, 167)) ('neurodegenerative diseases', 'Disease', (47, 73)) ('ataxia', 'Disease', (169, 175)) ('ataxia', 'Disease', 'MESH:D001259', (169, 175)) ('SDHA', 'Gene', (22, 26)) ('encephalopathy', 'Disease', 'MESH:D001927', (97, 111)) ('SDHA', 'Gene', '6389', (22, 26)) 53275 22974104 However, two recent studies allowed the identification of SDHA germline mutations in at least 3% patients with apparently sporadic cases of paraganglioma or pheochromocytoma. ('SDHA', 'Gene', '6389', (58, 62)) ('paraganglioma', 'Phenotype', 'HP:0002668', (140, 153)) ('SDHA', 'Gene', (58, 62)) ('paraganglioma or pheochromocytoma', 'Disease', 'MESH:D010673', (140, 173)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (157, 173)) ('germline mutations', 'Var', (63, 81)) ('paraganglioma or pheochromocytoma', 'Disease', (140, 173)) ('patients', 'Species', '9606', (97, 105)) 53276 22974104 Interestingly, four cases of sporadic KIT and PDGFRA WT GIST occurring in one pediatric and three young adult patients have also been associated with germline mutation of SDHA. ('associated', 'Reg', (134, 144)) ('SDHA', 'Gene', (171, 175)) ('germline', 'Var', (150, 158)) ('PDGFRA WT GIST', 'Gene', '5156', (46, 60)) ('SDHA', 'Gene', '6389', (171, 175)) ('PDGFRA WT GIST', 'Gene', (46, 60)) ('GIST', 'Phenotype', 'HP:0100723', (56, 60)) ('patients', 'Species', '9606', (110, 118)) 53277 22974104 In the present study, we investigated a series of 17 apparently sporadic and Carney's triad-related KIT and PDGFRA WT GIST for SDHA mutations and found an additional two cases with mutations in this gene. ('mutations', 'Var', (132, 141)) ('PDGFRA WT GIST', 'Gene', '5156', (108, 122)) ('PDGFRA WT GIST', 'Gene', (108, 122)) ('SDHA', 'Gene', '6389', (127, 131)) ('Carney', 'Disease', (77, 83)) ('GIST', 'Phenotype', 'HP:0100723', (118, 122)) ('SDHA', 'Gene', (127, 131)) 53278 22974104 The p.Arg31X SDHA germline mutation identified in our study leads to a truncated protein. ('truncated', 'MPA', (71, 80)) ('p.Arg31X', 'Var', (4, 12)) ('SDHA', 'Gene', '6389', (13, 17)) ('leads to', 'Reg', (60, 68)) ('p.Arg31X', 'Mutation', 'rs142441643', (4, 12)) ('SDHA', 'Gene', (13, 17)) 53280 22974104 The second SDHA mutation identified in our study (p.D38V) has been reported as a single nucleotide polymorphism. ('SDHA', 'Gene', '6389', (11, 15)) ('p.D38V', 'Var', (50, 56)) ('p.D38V', 'Mutation', 'rs34635677', (50, 56)) ('SDHA', 'Gene', (11, 15)) 53285 22974104 By performing western blotting, we identified a loss of SDHA protein expression in the two mutated cases whereas expression was retained in the non-mutated cases. ('loss', 'NegReg', (48, 52)) ('SDHA', 'Gene', '6389', (56, 60)) ('SDHA', 'Gene', (56, 60)) ('mutated', 'Var', (91, 98)) ('expression', 'MPA', (69, 79)) 53286 22974104 This result was expected in the tumor with the p.Arg31X mutation because this mutation leads to a truncated SDHA protein. ('SDHA', 'Gene', '6389', (108, 112)) ('p.Arg31X', 'Var', (47, 55)) ('SDHA', 'Gene', (108, 112)) ('tumor', 'Disease', 'MESH:D009369', (32, 37)) ('leads to', 'Reg', (87, 95)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('p.Arg31X', 'Mutation', 'rs142441643', (47, 55)) ('tumor', 'Disease', (32, 37)) ('truncated', 'MPA', (98, 107)) 53287 22974104 Although the p.D38V missense mutation does not lead to a truncated protein, the SDHA expression was significantly decreased by IHC and not detected by Western blot. ('expression', 'MPA', (85, 95)) ('SDHA', 'Gene', '6389', (80, 84)) ('SDHA', 'Gene', (80, 84)) ('decreased', 'NegReg', (114, 123)) ('p.D38V', 'Mutation', 'rs34635677', (13, 19)) ('p.D38V missense', 'Var', (13, 28)) 53288 22974104 This result can be explained by a conformational change of the mutated SDHA protein compromising the antigenic epitope for the antibody. ('mutated', 'Var', (63, 70)) ('compromising', 'NegReg', (84, 96)) ('conformational', 'MPA', (34, 48)) ('SDHA', 'Gene', '6389', (71, 75)) ('protein', 'Protein', (76, 83)) ('antigenic epitope', 'MPA', (101, 118)) ('SDHA', 'Gene', (71, 75)) 53289 22974104 Another explanation is that the p.D38V mutation leads to SDHA protein instability. ('p.D38V', 'Var', (32, 38)) ('leads to', 'Reg', (48, 56)) ('p.D38V', 'Mutation', 'rs34635677', (32, 38)) ('SDHA', 'Gene', '6389', (57, 61)) ('SDHA', 'Gene', (57, 61)) 53296 22974104 In contrast, whereas SDHB expression was not detected in all WT GIST included in our series, all these tumors (except the two with a mutation of the SDHA gene) displayed expression of SDHA. ('SDHA', 'Gene', '6389', (184, 188)) ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('mutation', 'Var', (133, 141)) ('SDHA', 'Gene', '6389', (149, 153)) ('GIST', 'Phenotype', 'HP:0100723', (64, 68)) ('tumors', 'Phenotype', 'HP:0002664', (103, 109)) ('tumors', 'Disease', (103, 109)) ('SDHB', 'Gene', '6390', (21, 25)) ('tumors', 'Disease', 'MESH:D009369', (103, 109)) ('SDHA', 'Gene', (184, 188)) ('SDHA', 'Gene', (149, 153)) ('SDHB', 'Gene', (21, 25)) ('expression', 'MPA', (170, 180)) 53298 22974104 By pooling our results with those of previous studies, it appears that the majority of mutations of genes encoding subunits of the SDH complex II identified in apparently sporadic KIT and PDGFRA WT GIST occurred in young adults (9 out of 13 patients). ('GIST', 'Phenotype', 'HP:0100723', (198, 202)) ('mutations', 'Var', (87, 96)) ('PDGFRA WT GIST', 'Gene', '5156', (188, 202)) ('patients', 'Species', '9606', (241, 249)) ('PDGFRA WT GIST', 'Gene', (188, 202)) 53301 22974104 Although the number of identified mutation carriers is still low, current observations suggest that mutations of the succinate dehydrogenase complex II are more particularly associated with KIT and PDGFRA WT GIST occurring in young adults, outside the Carney's triad trait. ('mutations', 'Var', (100, 109)) ('associated', 'Reg', (174, 184)) ('succinate dehydrogenase', 'Gene', (117, 140)) ('PDGFRA WT GIST', 'Gene', '5156', (198, 212)) ('PDGFRA WT GIST', 'Gene', (198, 212)) ('succinate dehydrogenase', 'Gene', '6389', (117, 140)) ('GIST', 'Phenotype', 'HP:0100723', (208, 212)) 53303 22974104 Genetic screening for SDHB, C and D germline mutations is recommended for patients with paraganglioma/pheochromocytoma and SDH deficient GISTs. ('germline mutations', 'Var', (36, 54)) ('patients', 'Species', '9606', (74, 82)) ('GIST', 'Phenotype', 'HP:0100723', (137, 141)) ('SDHB', 'Gene', '6390', (22, 26)) ('SDHB', 'Gene', (22, 26)) ('paraganglioma/pheochromocytoma and SDH deficient GISTs', 'Disease', 'MESH:D010673', (88, 142)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (102, 118)) ('paraganglioma', 'Phenotype', 'HP:0002668', (88, 101)) 53304 22974104 At the time of this writing, it remains uncertain whether patients with SDHA-deficient GIST are also at increased risk for the tumors associated with SDHx germline mutation. ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('tumors', 'Disease', (127, 133)) ('tumors', 'Phenotype', 'HP:0002664', (127, 133)) ('SDHx', 'Gene', (150, 154)) ('tumors', 'Disease', 'MESH:D009369', (127, 133)) ('SDHx', 'Chemical', '-', (150, 154)) ('GIST', 'Phenotype', 'HP:0100723', (87, 91)) ('SDHA-deficient GIST', 'Disease', (72, 91)) ('patients', 'Species', '9606', (58, 66)) ('germline mutation', 'Var', (155, 172)) ('SDHA-deficient GIST', 'Disease', 'MESH:D046152', (72, 91)) 53342 21333207 Recent advances in genetic analysis have demonstrated hereditary causes of paragangliomas as well, such as mutations in the enzyme succinate dehydrogenase. ('mutations', 'Var', (107, 116)) ('paragangliomas', 'Disease', 'MESH:D010235', (75, 89)) ('causes', 'Reg', (65, 71)) ('paragangliomas', 'Disease', (75, 89)) ('paragangliomas', 'Phenotype', 'HP:0002668', (75, 89)) 53366 32870176 In a retrospective cohort study on 205,750 hypertensive patients, cardiovascular event rates were higher in patients with RHT. ('hypertensive', 'Disease', (43, 55)) ('patients', 'Species', '9606', (56, 64)) ('patients', 'Species', '9606', (108, 116)) ('hypertensive', 'Disease', 'MESH:D006973', (43, 55)) ('higher', 'PosReg', (98, 104)) ('RHT', 'Var', (122, 125)) ('cardiovascular', 'CPA', (66, 80)) ('cardiovascular event', 'Phenotype', 'HP:0001626', (66, 86)) 53369 32870176 Although, RHT and controlled HT have the same risk factors such as older age, high body mass index, chronic kidney disease (CKD), and diabetes, which lead to endothelial dysfunction, arterial stiffness, and vascular damage; the exact pathophysiology responsible for resistance is unclear. ('diabetes', 'Disease', (134, 142)) ('endothelial dysfunction', 'Disease', (158, 181)) ('high body', 'Var', (78, 87)) ('lead to', 'Reg', (150, 157)) ('chronic kidney disease', 'Phenotype', 'HP:0012622', (100, 122)) ('diabetes', 'Disease', 'MESH:D003920', (134, 142)) ('vascular damage', 'Disease', (207, 222)) ('high body mass index', 'Phenotype', 'HP:0031418', (78, 98)) ('chronic kidney disease', 'Disease', 'MESH:D051436', (100, 122)) ('CKD', 'Phenotype', 'HP:0012622', (124, 127)) ('kidney disease', 'Phenotype', 'HP:0000112', (108, 122)) ('endothelial dysfunction', 'Disease', 'MESH:C536439', (158, 181)) ('arterial stiffness', 'MPA', (183, 201)) ('chronic kidney disease', 'Disease', (100, 122)) ('vascular damage', 'Disease', 'MESH:D000783', (207, 222)) 53376 32870176 Factors associated with volume overload are excess aldosterone, obesity, high dietary salt intake, and CKD (19, 27, 28). ('high dietary salt intake', 'Phenotype', 'HP:0000127', (73, 97)) ('CKD', 'Var', (103, 106)) ('excess aldosterone', 'Phenotype', 'HP:0000859', (44, 62)) ('obesity', 'Disease', 'MESH:D009765', (64, 71)) ('excess', 'PosReg', (44, 50)) ('volume overload', 'Phenotype', 'HP:0011105', (24, 39)) ('obesity', 'Disease', (64, 71)) ('aldosterone', 'MPA', (51, 62)) ('volume', 'MPA', (24, 30)) ('CKD', 'Phenotype', 'HP:0012622', (103, 106)) ('aldosterone', 'Chemical', 'MESH:D000450', (51, 62)) ('dietary salt', 'Chemical', 'MESH:D017673', (78, 90)) ('obesity', 'Phenotype', 'HP:0001513', (64, 71)) 53381 32870176 A substudy of the PATHWAY-2 trial concluded that the antihypertensive effect of spironolactone was related to a significant reduction in thoracic fluid content. ('hypertensive', 'Disease', (57, 69)) ('reduction', 'NegReg', (124, 133)) ('spironolactone', 'Chemical', 'MESH:D013148', (80, 94)) ('PA', 'Phenotype', 'HP:0011736', (18, 20)) ('spironolactone', 'Var', (80, 94)) ('thoracic fluid content', 'MPA', (137, 159)) ('hypertensive', 'Disease', 'MESH:D006973', (57, 69)) 53388 32870176 Inaccurate measurement of BP may lead to an incorrect diagnosis of RHT. ('lead', 'Reg', (33, 37)) ('men', 'Species', '9606', (18, 21)) ('Inaccurate measurement of BP', 'Phenotype', 'HP:0032263', (0, 28)) ('RHT', 'Disease', (67, 70)) ('Inaccurate', 'Var', (0, 10)) 53424 32870176 Moreover, CKD may obstruct the response to antihypertensive treatment and promote resistance, which causes further damage to the kidneys, resulting in a vicious cycle. ('hypertensive', 'Disease', (47, 59)) ('kidneys', 'MPA', (129, 136)) ('men', 'Species', '9606', (65, 68)) ('promote', 'PosReg', (74, 81)) ('damage to the kidneys', 'Phenotype', 'HP:0000112', (115, 136)) ('CKD', 'Phenotype', 'HP:0012622', (10, 13)) ('resistance', 'MPA', (82, 92)) ('vicious cycle', 'MPA', (153, 166)) ('damage', 'MPA', (115, 121)) ('CKD', 'Var', (10, 13)) ('hypertensive', 'Disease', 'MESH:D006973', (47, 59)) ('obstruct', 'NegReg', (18, 26)) 53432 32870176 Sudden onset or worsening hypertension under the age of 30 or over the age of 55, presence of murmur over renal artery locations, unexplained asymmetry in kidney sizes, increased serum creatinine levels by more than 30% with the use of RAAS blockers, or recurrent pulmonary edema associated with hypertensive fluctuations could be used for RVH screening. ('hypertension', 'Disease', 'MESH:D006973', (26, 38)) ('creatinine', 'Chemical', 'MESH:D003404', (185, 195)) ('pulmonary edema', 'Phenotype', 'HP:0100598', (264, 279)) ('asymmetry in kidney sizes', 'Phenotype', 'HP:0012210', (142, 167)) ('increased', 'PosReg', (169, 178)) ('serum creatinine levels', 'MPA', (179, 202)) ('hypertensive', 'Disease', 'MESH:D006973', (296, 308)) ('recurrent', 'Disease', (254, 263)) ('hypertension', 'Disease', (26, 38)) ('hypertensive', 'Disease', (296, 308)) ('presence', 'Var', (82, 90)) ('pulmonary edema', 'Disease', 'MESH:D011654', (264, 279)) ('increased serum creatinine', 'Phenotype', 'HP:0003259', (169, 195)) ('edema', 'Phenotype', 'HP:0000969', (274, 279)) ('hypertension', 'Phenotype', 'HP:0000822', (26, 38)) ('pulmonary edema', 'Disease', (264, 279)) 53474 32870176 Also, antineoplastic agents such as tyrosine kinase inhibitors and antidepressants can exacerbate hypertension. ('hypertension', 'Disease', (98, 110)) ('hypertension', 'Phenotype', 'HP:0000822', (98, 110)) ('exacerbate', 'PosReg', (87, 97)) ('tyrosine', 'Var', (36, 44)) ('hypertension', 'Disease', 'MESH:D006973', (98, 110)) 53476 32870176 Vitamin D deficiency is known to be related to hypertension. ('related', 'Reg', (36, 43)) ('Vitamin D', 'Gene', (0, 9)) ('hypertension', 'Disease', (47, 59)) ('hypertension', 'Phenotype', 'HP:0000822', (47, 59)) ('Vitamin D deficiency', 'Phenotype', 'HP:0100512', (0, 20)) ('deficiency', 'Var', (10, 20)) ('Vitamin D', 'Chemical', 'MESH:D014807', (0, 9)) ('hypertension', 'Disease', 'MESH:D006973', (47, 59)) 53477 32870176 Moreover, in a study evaluating 101 patients with RHT treated with renal denervation, those with significant vitamin D deficiency showed a blunted decrease in SBP in response to treatment. ('deficiency', 'Var', (119, 129)) ('patients', 'Species', '9606', (36, 44)) ('SBP', 'Gene', (159, 162)) ('men', 'Species', '9606', (183, 186)) ('decrease', 'NegReg', (147, 155)) ('vitamin D', 'Chemical', 'MESH:D014807', (109, 118)) ('vitamin', 'Gene', (109, 116)) ('vitamin D deficiency', 'Phenotype', 'HP:0100512', (109, 129)) ('SBP', 'Gene', '8991', (159, 162)) 53478 32870176 Vitamin D deficiency is very common in Turkey with a reported prevalence of almost 75%. ('Vitamin D', 'Gene', (0, 9)) ('Turkey', 'Species', '9103', (39, 45)) ('Vitamin D deficiency', 'Phenotype', 'HP:0100512', (0, 20)) ('deficiency', 'Var', (10, 20)) ('Vitamin D', 'Chemical', 'MESH:D014807', (0, 9)) 53502 32870176 Adhering to healthy lifestyle behaviors was found to be related to a significant reduction in cardiovascular events in patients with RHT. ('cardiovascular', 'Disease', (94, 108)) ('cardiovascular events', 'Phenotype', 'HP:0001626', (94, 115)) ('patients', 'Species', '9606', (119, 127)) ('reduction', 'NegReg', (81, 90)) ('cardiovascular event', 'Phenotype', 'HP:0001626', (94, 114)) ('Adhering', 'Var', (0, 8)) 53511 32870176 Vitamin D deficiency is significantly common in our country and patients with RHT should be encouraged to sunbath properly in natural sunshine. ('patients', 'Species', '9606', (64, 72)) ('Vitamin', 'Gene', (0, 7)) ('Vitamin D deficiency', 'Phenotype', 'HP:0100512', (0, 20)) ('deficiency', 'Var', (10, 20)) ('Vitamin D', 'Chemical', 'MESH:D014807', (0, 9)) 53543 32870176 It should be noted that hydralazine can cause increased sympathetic tone and sodium retention, and minoxidil induces hirsutism. ('minoxidil', 'Chemical', 'MESH:D008914', (99, 108)) ('hirsutism', 'Disease', (117, 126)) ('increased', 'PosReg', (46, 55)) ('sodium', 'Chemical', 'MESH:D012964', (77, 83)) ('hirsutism', 'Disease', 'MESH:D006628', (117, 126)) ('sodium retention', 'MPA', (77, 93)) ('hydralazine', 'Chemical', 'MESH:D006830', (24, 35)) ('sympathetic tone', 'MPA', (56, 72)) ('hydralazine', 'Var', (24, 35)) ('hirsutism', 'Phenotype', 'HP:0001007', (117, 126)) ('induces', 'Reg', (109, 116)) 53548 32870176 Vitamin D deficiency is highly prevalent in Turkey and is shown to be related to RHT. ('RHT', 'Disease', (81, 84)) ('Vitamin', 'Gene', (0, 7)) ('Vitamin D deficiency', 'Phenotype', 'HP:0100512', (0, 20)) ('deficiency', 'Var', (10, 20)) ('related', 'Reg', (70, 77)) ('Vitamin D', 'Chemical', 'MESH:D014807', (0, 9)) ('Turkey', 'Species', '9103', (44, 50)) 53554 32870176 Inhibition of aminopeptidase A down-regulates the brain renin-angiotensin system and decreases sympathetic outflow. ('decreases', 'NegReg', (85, 94)) ('aminopeptidase A', 'Gene', '2028', (14, 30)) ('sympathetic outflow', 'MPA', (95, 114)) ('renin', 'Gene', (56, 61)) ('down-regulates', 'NegReg', (31, 45)) ('Inhibition', 'Var', (0, 10)) ('aminopeptidase A', 'Gene', (14, 30)) ('renin', 'Gene', '5972', (56, 61)) 53590 32971818 Immunohistochemistry and Mutation Analysis of SDHx Genes in Carotid Paragangliomas Carotid paragangliomas (CPGLs) are rare neuroendocrine tumors often associated with mutations in SDHx genes. ('mutations', 'Var', (167, 176)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (123, 143)) ('Carotid paraganglioma', 'Phenotype', 'HP:0100635', (83, 104)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (123, 144)) ('associated', 'Reg', (151, 161)) ('SDH', 'Gene', '6390', (46, 49)) ('Carotid paragangliomas', 'Disease', 'MESH:D002345', (83, 105)) ('CPGLs', 'Chemical', '-', (107, 112)) ('PGLs', 'Phenotype', 'HP:0002668', (108, 112)) ('Carotid Paragangliomas', 'Phenotype', 'HP:0100635', (60, 82)) ('tumor', 'Phenotype', 'HP:0002664', (138, 143)) ('Paragangliomas', 'Disease', (68, 82)) ('Paragangliomas', 'Disease', 'MESH:D010235', (68, 82)) ('SDH', 'Gene', '6390', (180, 183)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (123, 144)) ('tumors', 'Phenotype', 'HP:0002664', (138, 144)) ('SDH', 'Gene', (46, 49)) ('paragangliomas', 'Phenotype', 'HP:0002668', (91, 105)) ('paraganglioma', 'Phenotype', 'HP:0002668', (91, 104)) ('Carotid paragangliomas', 'Disease', (83, 105)) ('neuroendocrine tumors', 'Disease', (123, 144)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (68, 82)) ('CPGL', 'Phenotype', 'HP:0100635', (107, 111)) ('SDH', 'Gene', (180, 183)) 53591 32971818 The immunohistochemistry of succinate dehydrogenase (SDH) subunits has been considered a useful instrument for the prediction of SDHx mutations in paragangliomas/pheochromocytomas. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (162, 178)) ('SDH', 'Gene', (53, 56)) ('paraganglioma', 'Phenotype', 'HP:0002668', (147, 160)) ('SDH', 'Gene', (129, 132)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (162, 179)) ('paragangliomas', 'Phenotype', 'HP:0002668', (147, 161)) ('paragangliomas/pheochromocytomas', 'Disease', (147, 179)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (147, 179)) ('succinate dehydrogenase', 'Gene', '6390', (28, 51)) ('SDH', 'Gene', '6390', (53, 56)) ('SDH', 'Gene', '6390', (129, 132)) ('succinate dehydrogenase', 'Gene', (28, 51)) ('mutations', 'Var', (134, 143)) 53593 32971818 To identify pathogenic/likely pathogenic variants in SDHx genes, exome sequencing data analysis among 42 CPGL patients was performed. ('CPGL', 'Phenotype', 'HP:0100635', (105, 109)) ('variants', 'Var', (41, 49)) ('SDH', 'Gene', (53, 56)) ('SDH', 'Gene', '6390', (53, 56)) ('patients', 'Species', '9606', (110, 118)) ('pathogenic/likely', 'Reg', (12, 29)) 53595 32971818 We encountered SDHx variants in 38% (16/42) of the cases in SDHx genes. ('SDH', 'Gene', (60, 63)) ('variants', 'Var', (20, 28)) ('SDH', 'Gene', '6390', (15, 18)) ('SDH', 'Gene', '6390', (60, 63)) ('SDH', 'Gene', (15, 18)) 53596 32971818 IHC showed negative (5/15) or weak diffuse (10/15) SDHB staining in most tumors with variants in any of SDHx (94%, 15/16). ('SDH', 'Gene', '6390', (51, 54)) ('tumors', 'Disease', 'MESH:D009369', (73, 79)) ('variants', 'Var', (85, 93)) ('SDH', 'Gene', '6390', (104, 107)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('tumors', 'Phenotype', 'HP:0002664', (73, 79)) ('SDH', 'Gene', (104, 107)) ('SDH', 'Gene', (51, 54)) ('SDHB', 'Gene', '6390', (51, 55)) ('tumors', 'Disease', (73, 79)) ('SDHB', 'Gene', (51, 55)) 53598 32971818 Positive immunoreactivity for all SDH subunits was found in one case with a variant in SDHD. ('variant', 'Var', (76, 83)) ('SDH', 'Gene', '6390', (87, 90)) ('SDH', 'Gene', (34, 37)) ('SDH', 'Gene', (87, 90)) ('SDHD', 'Gene', (87, 91)) ('SDHD', 'Gene', '6392', (87, 91)) ('found', 'Reg', (51, 56)) ('SDH', 'Gene', '6390', (34, 37)) 53599 32971818 Notably, CPGL samples without variants in SDHx also demonstrated negative (2/11) or weak diffuse (9/11) SDHB staining (42%, 11/26). ('variants', 'Var', (30, 38)) ('SDH', 'Gene', '6390', (42, 45)) ('SDH', 'Gene', '6390', (104, 107)) ('SDH', 'Gene', (42, 45)) ('SDH', 'Gene', (104, 107)) ('SDHB', 'Gene', '6390', (104, 108)) ('CPGL', 'Phenotype', 'HP:0100635', (9, 13)) ('SDHB', 'Gene', (104, 108)) 53601 32971818 However, given the high sensitivity of SDHB immunohistochemistry, it could be used for initial identifications of patients potentially carrying SDHx mutations for recommendation of genetic testing. ('SDH', 'Gene', (39, 42)) ('SDH', 'Gene', '6390', (144, 147)) ('mutations', 'Var', (149, 158)) ('SDHB', 'Gene', '6390', (39, 43)) ('SDH', 'Gene', (144, 147)) ('SDHB', 'Gene', (39, 43)) ('SDH', 'Gene', '6390', (39, 42)) ('patients', 'Species', '9606', (114, 122)) 53611 32971818 Germline pathogenic variants in these genes are mainly associated with PCCs but have also been seen in CPGLs. ('variants', 'Var', (20, 28)) ('PCCs', 'Disease', (71, 75)) ('associated', 'Reg', (55, 65)) ('PGLs', 'Phenotype', 'HP:0002668', (104, 108)) ('CPGL', 'Phenotype', 'HP:0100635', (103, 107)) ('CPGLs', 'Chemical', '-', (103, 108)) ('CPGLs', 'Disease', (103, 108)) 53612 32971818 Apparently sporadic cases of CPGLs have been reported as being associated with germline mutations in SDHA, SDHB, SDHD, and VHL, as well as somatic mutations in VHL, RET, IDH1, and IDH2. ('mutations', 'Var', (147, 156)) ('SDHD', 'Gene', (113, 117)) ('mutations', 'Var', (88, 97)) ('IDH1', 'Gene', '3417', (170, 174)) ('VHL', 'Gene', '7428', (160, 163)) ('IDH2', 'Gene', (180, 184)) ('CPGLs', 'Chemical', '-', (29, 34)) ('IDH2', 'Gene', '3418', (180, 184)) ('associated', 'Reg', (63, 73)) ('VHL', 'Gene', (123, 126)) ('SDHB', 'Gene', '6390', (107, 111)) ('RET', 'Gene', '5979', (165, 168)) ('PGLs', 'Phenotype', 'HP:0002668', (30, 34)) ('SDHA', 'Gene', (101, 105)) ('VHL', 'Gene', '7428', (123, 126)) ('CPGL', 'Phenotype', 'HP:0100635', (29, 33)) ('SDHA', 'Gene', '6389', (101, 105)) ('IDH1', 'Gene', (170, 174)) ('SDHB', 'Gene', (107, 111)) ('CPGLs', 'Disease', (29, 34)) ('VHL', 'Gene', (160, 163)) ('SDHD', 'Gene', '6392', (113, 117)) ('RET', 'Gene', (165, 168)) 53614 32971818 The immunohistochemistry (IHC) of SDHB and SDHA subunits has been proposed as a useful method to predict underlying SDHx mutations in first-line diagnostics of hereditary PCCs/PGLs. ('hereditary PCCs', 'Disease', 'MESH:D030342', (160, 175)) ('mutations', 'Var', (121, 130)) ('SDH', 'Gene', (43, 46)) ('SDH', 'Gene', (116, 119)) ('SDH', 'Gene', (34, 37)) ('hereditary PCCs', 'Disease', (160, 175)) ('SDHA', 'Gene', '6389', (43, 47)) ('PGLs', 'Phenotype', 'HP:0002668', (176, 180)) ('SDHB', 'Gene', '6390', (34, 38)) ('SDH', 'Gene', '6390', (43, 46)) ('SDHB', 'Gene', (34, 38)) ('SDH', 'Gene', '6390', (116, 119)) ('SDHA', 'Gene', (43, 47)) ('SDH', 'Gene', '6390', (34, 37)) 53615 32971818 All PGLs carrying SDHA mutations showed negative SDHA staining, while SDHA-positive immunoreactivity was observed in tumors with mutations in other SDHx genes. ('SDH', 'Gene', '6390', (49, 52)) ('SDH', 'Gene', (70, 73)) ('SDH', 'Gene', '6390', (18, 21)) ('tumors', 'Phenotype', 'HP:0002664', (117, 123)) ('SDHA', 'Gene', (18, 22)) ('SDHA', 'Gene', (49, 53)) ('SDHA', 'Gene', '6389', (18, 22)) ('SDHA', 'Gene', '6389', (49, 53)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('SDH', 'Gene', (49, 52)) ('tumors', 'Disease', (117, 123)) ('mutations', 'Var', (23, 32)) ('SDH', 'Gene', (18, 21)) ('SDH', 'Gene', '6390', (148, 151)) ('SDH', 'Gene', '6390', (70, 73)) ('SDHA', 'Gene', (70, 74)) ('tumors', 'Disease', 'MESH:D009369', (117, 123)) ('PGLs', 'Phenotype', 'HP:0002668', (4, 8)) ('negative', 'NegReg', (40, 48)) ('SDHA', 'Gene', '6389', (70, 74)) ('SDH', 'Gene', (148, 151)) 53616 32971818 Loss of cytoplasmic SDHB staining or a weak diffuse cytoplasmic blush instead of a normal granular staining pattern was revealed in PGLs with mutations in SDHB, SDHC, or SDHD. ('SDHC', 'Gene', (161, 165)) ('mutations', 'Var', (142, 151)) ('SDHD', 'Gene', (170, 174)) ('SDHB', 'Gene', (155, 159)) ('SDHC', 'Gene', '6391', (161, 165)) ('Loss', 'NegReg', (0, 4)) ('SDHB', 'Gene', '6390', (20, 24)) ('PGLs', 'Phenotype', 'HP:0002668', (132, 136)) ('SDHB', 'Gene', '6390', (155, 159)) ('SDHB', 'Gene', (20, 24)) ('SDHD', 'Gene', '6392', (170, 174)) 53617 32971818 Additionally, several cases of PGLs/PCCs with SDHA mutations showed a loss of SDHB protein expression coupled with negative SDHA staining. ('PGLs', 'Phenotype', 'HP:0002668', (31, 35)) ('expression', 'MPA', (91, 101)) ('mutations', 'Var', (51, 60)) ('SDHA', 'Gene', '6389', (46, 50)) ('loss', 'NegReg', (70, 74)) ('SDHB', 'Gene', '6390', (78, 82)) ('SDHA', 'Gene', (124, 128)) ('protein', 'Protein', (83, 90)) ('SDHB', 'Gene', (78, 82)) ('SDHA', 'Gene', (46, 50)) ('SDHA', 'Gene', '6389', (124, 128)) 53620 32971818 About 90% of PGLs/PCCs with mutations in SDHB, SDHC, SDHD, and SDHAF2 were SDHB immunonegative and SDHA immunopositive. ('SDHA', 'Gene', (99, 103)) ('SDHC', 'Gene', (47, 51)) ('SDHC', 'Gene', '6391', (47, 51)) ('SDHAF2', 'Gene', '54949', (63, 69)) ('PGLs', 'Phenotype', 'HP:0002668', (13, 17)) ('SDHA', 'Gene', (63, 67)) ('SDHD', 'Gene', (53, 57)) ('SDHAF2', 'Gene', (63, 69)) ('SDHD', 'Gene', '6392', (53, 57)) ('SDHB', 'Gene', '6390', (75, 79)) ('SDHB', 'Gene', '6390', (41, 45)) ('SDHA', 'Gene', '6389', (99, 103)) ('SDHB', 'Gene', (75, 79)) ('SDHA', 'Gene', '6389', (63, 67)) ('SDHB', 'Gene', (41, 45)) ('mutations', 'Var', (28, 37)) 53621 32971818 Loss of SDHA/SDHB staining was detected in 75% of tumors with SDHA mutations. ('tumors', 'Disease', 'MESH:D009369', (50, 56)) ('SDHA', 'Gene', '6389', (8, 12)) ('SDHA', 'Gene', (62, 66)) ('SDHB', 'Gene', '6390', (13, 17)) ('mutations', 'Var', (67, 76)) ('Loss', 'NegReg', (0, 4)) ('SDHB', 'Gene', (13, 17)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('SDHA', 'Gene', (8, 12)) ('tumors', 'Phenotype', 'HP:0002664', (50, 56)) ('tumors', 'Disease', (50, 56)) ('SDHA', 'Gene', '6389', (62, 66)) 53623 32971818 These results established the usability of SDHA/SDHB immunohistochemistry to identify SDHx mutations in PGLs/PCCs. ('SDH', 'Gene', '6390', (86, 89)) ('SDH', 'Gene', (43, 46)) ('SDH', 'Gene', '6390', (48, 51)) ('SDH', 'Gene', (86, 89)) ('PGLs/PCCs', 'Gene', (104, 113)) ('SDH', 'Gene', (48, 51)) ('mutations', 'Var', (91, 100)) ('SDHA', 'Gene', '6389', (43, 47)) ('SDH', 'Gene', '6390', (43, 46)) ('PGLs', 'Phenotype', 'HP:0002668', (104, 108)) ('SDHB', 'Gene', '6390', (48, 52)) ('SDHA', 'Gene', (43, 47)) ('SDHB', 'Gene', (48, 52)) 53624 32971818 For example, changed SDHB immunostaining can be caused by not only exonic mutations in the SDHx genes but also by the epigenetic alterations (epimutations), mutations in regulatory regions, changes in the expression and functionality of transcription factors, or other components of energy metabolism. ('SDH', 'Gene', (91, 94)) ('caused', 'Reg', (48, 54)) ('changes', 'Reg', (190, 197)) ('epigenetic alterations', 'Var', (118, 140)) ('SDH', 'Gene', (21, 24)) ('SDH', 'Gene', '6390', (21, 24)) ('exonic mutations', 'Var', (67, 83)) ('SDHB', 'Gene', '6390', (21, 25)) ('mutations', 'Var', (157, 166)) ('SDH', 'Gene', '6390', (91, 94)) ('immunostaining', 'MPA', (26, 40)) ('SDHB', 'Gene', (21, 25)) ('changed', 'Reg', (13, 20)) 53625 32971818 Another method for prediction of SDHx mutation status bases on evaluating the succinate-to-fumarate ratio (SFR) using liquid chromatography-mass spectrometry. ('fumarate', 'Chemical', 'MESH:D005650', (91, 99)) ('SDH', 'Gene', (33, 36)) ('succinate-to-fumarate ratio', 'MPA', (78, 105)) ('succinate', 'Chemical', 'MESH:D019802', (78, 87)) ('SDH', 'Gene', '6390', (33, 36)) ('mutation', 'Var', (38, 46)) 53628 32971818 In this work, we first performed a correlation analysis between variants in the SDHx genes and their expression at the protein level in a representative set of CPGLs. ('CPGLs', 'Chemical', '-', (160, 165)) ('PGLs', 'Phenotype', 'HP:0002668', (161, 165)) ('SDH', 'Gene', '6390', (80, 83)) ('expression', 'MPA', (101, 111)) ('SDH', 'Gene', (80, 83)) ('variants', 'Var', (64, 72)) ('CPGL', 'Phenotype', 'HP:0100635', (160, 164)) 53630 32971818 We also evaluated the possibility of SDHA/SDHB immunostaining use to predict variants in any of the SDHx genes in CPGLs. ('variants', 'Var', (77, 85)) ('CPGL', 'Phenotype', 'HP:0100635', (114, 118)) ('SDH', 'Gene', '6390', (100, 103)) ('SDH', 'Gene', (37, 40)) ('SDH', 'Gene', '6390', (42, 45)) ('SDH', 'Gene', (100, 103)) ('SDH', 'Gene', (42, 45)) ('SDHA', 'Gene', '6389', (37, 41)) ('SDH', 'Gene', '6390', (37, 40)) ('SDHB', 'Gene', '6390', (42, 46)) ('SDHA', 'Gene', (37, 41)) ('SDHB', 'Gene', (42, 46)) ('CPGLs', 'Chemical', '-', (114, 119)) ('PGLs', 'Phenotype', 'HP:0002668', (115, 119)) 53631 32971818 We have found that SDHB staining does not always correlate with SDHx variants, while several studies proposed the immunohistochemistry of the SDHB subunit as a useful instrument for the prediction of SDHx mutation status. ('SDH', 'Gene', (19, 22)) ('SDHB', 'Gene', (142, 146)) ('SDH', 'Gene', (64, 67)) ('SDHB', 'Gene', '6390', (19, 23)) ('SDH', 'Gene', '6390', (142, 145)) ('variants', 'Var', (69, 77)) ('SDHB', 'Gene', (19, 23)) ('SDH', 'Gene', '6390', (200, 203)) ('SDH', 'Gene', (142, 145)) ('SDH', 'Gene', '6390', (19, 22)) ('SDH', 'Gene', '6390', (64, 67)) ('SDHB', 'Gene', '6390', (142, 146)) ('SDH', 'Gene', (200, 203)) 53632 32971818 These important results indicate the necessity of genetic testing of SDHx variants along with IHC study in CPGLs. ('SDH', 'Gene', '6390', (69, 72)) ('SDH', 'Gene', (69, 72)) ('CPGLs', 'Chemical', '-', (107, 112)) ('PGLs', 'Phenotype', 'HP:0002668', (108, 112)) ('CPGL', 'Phenotype', 'HP:0100635', (107, 111)) ('variants', 'Var', (74, 82)) 53634 32971818 Pathogenic/likely pathogenic variants in the SDHx genes were found in 16 out of 42 (38%) patients with CPGLs (Table 1, Figure 1). ('found', 'Reg', (61, 66)) ('SDH', 'Gene', (45, 48)) ('variants', 'Var', (29, 37)) ('patients', 'Species', '9606', (89, 97)) ('PGLs', 'Phenotype', 'HP:0002668', (104, 108)) ('CPGL', 'Phenotype', 'HP:0100635', (103, 107)) ('Pathogenic/likely', 'Reg', (0, 17)) ('CPGLs', 'Chemical', '-', (103, 108)) ('CPGLs', 'Disease', (103, 108)) ('SDH', 'Gene', '6390', (45, 48)) 53635 32971818 Among the 42 studied patients, ten had variants in the SDHD gene (24%), two were characterized with variants in SDHB (5%), three had variants in SDHC (7%), and one carried a variant in SDHA (2%). ('variants', 'Var', (100, 108)) ('SDHA', 'Gene', (185, 189)) ('SDHB', 'Gene', '6390', (112, 116)) ('patients', 'Species', '9606', (21, 29)) ('SDHB', 'Gene', (112, 116)) ('SDHD', 'Gene', '6392', (55, 59)) ('SDHC', 'Gene', (145, 149)) ('SDHA', 'Gene', '6389', (185, 189)) ('SDHC', 'Gene', '6391', (145, 149)) ('variants', 'Var', (39, 47)) ('SDHD', 'Gene', (55, 59)) 53637 32971818 Pathogenic/likely pathogenic variants were found in RET and IDH1; no variants in VHL, TMEM127, MAX, IDH2, FH, SLC25A11, and SDHAF1-4 genes were identified. ('SDHAF1-4', 'Gene', (124, 132)) ('SLC25A11', 'Gene', (110, 118)) ('TMEM127', 'Gene', '55654', (86, 93)) ('VHL', 'Gene', (81, 84)) ('IDH1', 'Gene', (60, 64)) ('RET', 'Gene', '5979', (52, 55)) ('VHL', 'Gene', '7428', (81, 84)) ('variants', 'Var', (29, 37)) ('IDH2', 'Gene', (100, 104)) ('Pathogenic/likely', 'Reg', (0, 17)) ('IDH1', 'Gene', '3417', (60, 64)) ('RET', 'Gene', (52, 55)) ('SLC25A11', 'Gene', '8402', (110, 118)) ('TMEM127', 'Gene', (86, 93)) ('IDH2', 'Gene', '3418', (100, 104)) ('SDHAF1-4', 'Gene', '644096;54949;57001;135154', (124, 132)) 53638 32971818 Pathogenic variants in RET were observed in three (7%) patients with CPGLs. ('RET', 'Gene', (23, 26)) ('observed', 'Reg', (32, 40)) ('variants', 'Var', (11, 19)) ('Pathogenic', 'Reg', (0, 10)) ('CPGL', 'Phenotype', 'HP:0100635', (69, 73)) ('RET', 'Gene', '5979', (23, 26)) ('CPGLs', 'Chemical', '-', (69, 74)) ('patients', 'Species', '9606', (55, 63)) ('PGLs', 'Phenotype', 'HP:0002668', (70, 74)) 53639 32971818 A pathogenic variant in RET NM_020975: c.2372A > T, p.(Tyr791Phe) (chr10: 43613908, rs77724903;13936) was revealed in two patients who also carried pathogenic/likely pathogenic variants in SDHA (Pat16) and SDHD (Pat35). ('RET', 'Gene', '5979', (24, 27)) ('SDHA', 'Gene', (189, 193)) ('p.(Tyr791Phe', 'Var', (52, 64)) ('p.(Tyr791Phe)', 'SUBSTITUTION', 'None', (52, 65)) ('rs77724903', 'DBSNP_MENTION', 'None', (84, 94)) ('pathogenic', 'Reg', (2, 12)) ('rs77724903', 'Var', (84, 94)) ('SDHD', 'Gene', '6392', (206, 210)) ('RET', 'Gene', (24, 27)) ('patients', 'Species', '9606', (122, 130)) ('c.2372A > T', 'Var', (39, 50)) ('pathogenic/likely', 'Reg', (148, 165)) ('SDHD', 'Gene', (206, 210)) ('SDHA', 'Gene', '6389', (189, 193)) 53640 32971818 In Pat27, we found a pathogenic variant in RET NM_020975: c.2944C > T, p.(Arg982Cys) (chr10: 43620335, rs17158558) that was corepresented with a likely pathogenic frameshift variant in the SDHC gene. ('p.(Arg982Cys)', 'SUBSTITUTION', 'None', (71, 84)) ('RET', 'Gene', (43, 46)) ('frameshift', 'Var', (163, 173)) ('rs17158558', 'Var', (103, 113)) ('SDHC', 'Gene', (189, 193)) ('c.2944C > T', 'Var', (58, 69)) ('pathogenic', 'Reg', (152, 162)) ('rs17158558', 'DBSNP_MENTION', 'None', (103, 113)) ('SDHC', 'Gene', '6391', (189, 193)) ('p.(Arg982Cys', 'Var', (71, 83)) ('RET', 'Gene', '5979', (43, 46)) ('pathogenic', 'Reg', (21, 31)) 53641 32971818 A likely pathogenic variant in IDH1 NM_005896: c.394C > T, p.(Arg132Cys) (chr2: 209113113, rs121913499) has been observed in one (2%) patient (Pat31) together with no mutations in the SDHx genes. ('p.(Arg132Cys', 'Var', (59, 71)) ('pathogenic', 'Reg', (9, 19)) ('IDH1', 'Gene', '3417', (31, 35)) ('rs121913499', 'DBSNP_MENTION', 'None', (91, 102)) ('SDH', 'Gene', '6390', (184, 187)) ('rs121913499', 'Var', (91, 102)) ('c.394C > T', 'Var', (47, 57)) ('p.(Arg132Cys)', 'SUBSTITUTION', 'None', (59, 72)) ('SDH', 'Gene', (184, 187)) ('patient', 'Species', '9606', (134, 141)) ('IDH1', 'Gene', (31, 35)) 53646 32971818 The Spearman's rank correlation coefficient (rs) between the presence of mutations in any SDHx genes and negative or weak diffuse SDHB staining was 0.51, p <= 0.05. ('SDH', 'Gene', (130, 133)) ('SDH', 'Gene', '6390', (90, 93)) ('SDHB', 'Gene', '6390', (130, 134)) ('SDH', 'Gene', (90, 93)) ('SDHB', 'Gene', (130, 134)) ('SDH', 'Gene', '6390', (130, 133)) ('mutations', 'Var', (73, 82)) 53647 32971818 Negative or weak diffuse SDHB staining was found in nine out of ten cases with pathogenic/likely pathogenic SDHD variants; one SDHD-mutated tumor showed positive staining of all SDH subunits. ('SDHD', 'Gene', '6392', (108, 112)) ('SDH', 'Gene', '6390', (108, 111)) ('SDH', 'Gene', '6390', (25, 28)) ('SDH', 'Gene', (127, 130)) ('SDH', 'Gene', (178, 181)) ('SDH', 'Gene', (25, 28)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('SDHD', 'Gene', (127, 131)) ('tumor', 'Disease', 'MESH:D009369', (140, 145)) ('SDHD', 'Gene', '6392', (127, 131)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDH', 'Gene', (108, 111)) ('SDHB', 'Gene', (25, 29)) ('SDH', 'Gene', '6390', (178, 181)) ('variants', 'Var', (113, 121)) ('SDH', 'Gene', '6390', (127, 130)) ('SDHD', 'Gene', (108, 112)) ('tumor', 'Disease', (140, 145)) 53649 32971818 In two out of three samples with pathogenic/likely pathogenic variants in the SDHC gene, we identified weak diffuse SDHB staining and simultaneous positive SDHC expression. ('SDHC', 'Gene', '6391', (78, 82)) ('expression', 'MPA', (161, 171)) ('SDHB', 'Gene', '6390', (116, 120)) ('variants', 'Var', (62, 70)) ('SDHB', 'Gene', (116, 120)) ('SDHC', 'Gene', (156, 160)) ('SDHC', 'Gene', (78, 82)) ('SDHC', 'Gene', '6391', (156, 160)) 53651 32971818 All samples with pathogenic/likely pathogenic variants in the SDHB gene showed negative SDHB staining. ('SDHB', 'Gene', '6390', (88, 92)) ('negative', 'NegReg', (79, 87)) ('SDHB', 'Gene', (88, 92)) ('variants', 'Var', (46, 54)) ('SDHB', 'Gene', '6390', (62, 66)) ('SDHB', 'Gene', (62, 66)) 53652 32971818 A pathogenic/likely pathogenic variant in the SDHA gene was identified only in one patient. ('pathogenic/likely', 'Reg', (2, 19)) ('SDHA', 'Gene', '6389', (46, 50)) ('patient', 'Species', '9606', (83, 90)) ('SDHA', 'Gene', (46, 50)) ('variant', 'Var', (31, 38)) 53654 32971818 Among twenty-six CPGLs with no pathogenic/likely pathogenic variants in the SDHx genes, negative or weak diffuse SDHB staining was observed in eleven cases (42%). ('SDH', 'Gene', (113, 116)) ('SDHB', 'Gene', '6390', (113, 117)) ('CPGL', 'Phenotype', 'HP:0100635', (17, 21)) ('SDHB', 'Gene', (113, 117)) ('SDH', 'Gene', '6390', (76, 79)) ('CPGLs', 'Chemical', '-', (17, 22)) ('PGLs', 'Phenotype', 'HP:0002668', (18, 22)) ('SDH', 'Gene', '6390', (113, 116)) ('SDH', 'Gene', (76, 79)) ('variants', 'Var', (60, 68)) 53656 32971818 Three tumors with pathogenic variants of the RET gene, which were corepresented with SDHA, SDHC, and SDHD variants, have been characterized by negative or weak diffuse SDHB staining. ('SDHC', 'Gene', (91, 95)) ('SDHD', 'Gene', (101, 105)) ('SDHD', 'Gene', '6392', (101, 105)) ('pathogenic', 'Reg', (18, 28)) ('SDHA', 'Gene', (85, 89)) ('RET', 'Gene', '5979', (45, 48)) ('SDHC', 'Gene', '6391', (91, 95)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('tumors', 'Disease', (6, 12)) ('RET', 'Gene', (45, 48)) ('variants', 'Var', (29, 37)) ('tumors', 'Disease', 'MESH:D009369', (6, 12)) ('SDHA', 'Gene', '6389', (85, 89)) ('SDHB', 'Gene', '6390', (168, 172)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('SDHB', 'Gene', (168, 172)) 53657 32971818 Positive immunoreactivity was found in one patient with a likely pathogenic variant in the IDH1 gene occurring with no variant in SDHx. ('pathogenic', 'Reg', (65, 75)) ('variant', 'Var', (76, 83)) ('patient', 'Species', '9606', (43, 50)) ('SDH', 'Gene', (130, 133)) ('IDH1', 'Gene', (91, 95)) ('IDH1', 'Gene', '3417', (91, 95)) ('SDH', 'Gene', '6390', (130, 133)) 53661 32971818 SDH has a critical role in mitochondrial metabolism; disruption of the SDH complex leads to abnormal accumulation of succinate in the cytosol, reprogramming of the energy metabolism, increased ROS production, stabilization of hypoxia-inducible factors (HIFs), and altered gene expression (in particular, for HIF targets). ('altered', 'Reg', (264, 271)) ('increased ROS production', 'Phenotype', 'HP:0025464', (183, 207)) ('SDH', 'Gene', '6390', (71, 74)) ('hypoxia', 'Disease', 'MESH:D000860', (226, 233)) ('SDH', 'Gene', '6390', (0, 3)) ('disruption', 'Var', (53, 63)) ('SDH', 'Gene', (71, 74)) ('succinate', 'Chemical', 'MESH:D019802', (117, 126)) ('SDH', 'Gene', (0, 3)) ('ROS', 'Chemical', '-', (193, 196)) ('gene expression', 'MPA', (272, 287)) ('accumulation of succinate', 'MPA', (101, 126)) ('HIFs', 'Disease', (253, 257)) ('ROS production', 'MPA', (193, 207)) ('reprogramming', 'MPA', (143, 156)) ('increased', 'PosReg', (183, 192)) ('HIFs', 'Disease', 'None', (253, 257)) ('hypoxia', 'Disease', (226, 233)) ('stabilization', 'MPA', (209, 222)) 53664 32971818 Variants in SDHD are more frequently observed in HNPGLs, followed by SDHB and SDHC mutations. ('HNPGLs', 'Disease', (49, 55)) ('Variants', 'Var', (0, 8)) ('SDHB', 'Gene', (69, 73)) ('SDHC', 'Gene', '6391', (78, 82)) ('SDHD', 'Gene', (12, 16)) ('SDHD', 'Gene', '6392', (12, 16)) ('observed', 'Reg', (37, 45)) ('PGLs', 'Phenotype', 'HP:0002668', (51, 55)) ('SDHB', 'Gene', '6390', (69, 73)) ('SDHC', 'Gene', (78, 82)) 53665 32971818 SDHA variants show extremely low penetrance in HNPGLs. ('SDHA', 'Gene', (0, 4)) ('HNPGLs', 'Disease', (47, 53)) ('PGLs', 'Phenotype', 'HP:0002668', (49, 53)) ('SDHA', 'Gene', '6389', (0, 4)) ('variants', 'Var', (5, 13)) 53666 32971818 We obtained similar results; however, SDHC variants were found more often than SDHB variants. ('SDHC', 'Gene', (38, 42)) ('SDHC', 'Gene', '6391', (38, 42)) ('SDHB', 'Gene', '6390', (79, 83)) ('variants', 'Var', (43, 51)) ('SDHB', 'Gene', (79, 83)) 53667 32971818 Previously, it has been reported that SDHC mutations are mainly associated with the development of CPGLs, explaining this difference. ('associated with', 'Reg', (64, 79)) ('SDHC', 'Gene', (38, 42)) ('SDHC', 'Gene', '6391', (38, 42)) ('CPGL', 'Phenotype', 'HP:0100635', (99, 103)) ('CPGLs', 'Chemical', '-', (99, 104)) ('PGLs', 'Phenotype', 'HP:0002668', (100, 104)) ('mutations', 'Var', (43, 52)) ('CPGLs', 'Disease', (99, 104)) 53668 32971818 Mutations in any of the SDHx genes can cause a destabilization of the SDH complex, loss of its enzymatic activity, and a disruption in the electron transport function. ('disruption', 'Reg', (121, 131)) ('SDH', 'Gene', '6390', (24, 27)) ('destabilization', 'MPA', (47, 62)) ('SDH', 'Gene', '6390', (70, 73)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', (24, 27)) ('SDH', 'Gene', (70, 73)) ('electron transport function', 'MPA', (139, 166)) ('enzymatic activity', 'MPA', (95, 113)) ('loss', 'NegReg', (83, 87)) 53669 32971818 Numerous studies have reported a changed expression pattern of SDHB presented as negative or weak diffuse immunostaining in tumors with SDHA-, SDHB-, SDHC-, and SDHD mutations. ('SDHC', 'Gene', (150, 154)) ('SDHD', 'Gene', (161, 165)) ('SDHB', 'Gene', (143, 147)) ('SDHA', 'Gene', (136, 140)) ('SDHB', 'Gene', (63, 67)) ('mutations', 'Var', (166, 175)) ('expression', 'MPA', (41, 51)) ('tumors', 'Phenotype', 'HP:0002664', (124, 130)) ('SDHA', 'Gene', '6389', (136, 140)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('SDHC', 'Gene', '6391', (150, 154)) ('changed', 'Reg', (33, 40)) ('tumors', 'Disease', (124, 130)) ('negative', 'NegReg', (81, 89)) ('weak', 'NegReg', (93, 97)) ('SDHB', 'Gene', '6390', (143, 147)) ('SDHD', 'Gene', '6392', (161, 165)) ('tumors', 'Disease', 'MESH:D009369', (124, 130)) ('SDHB', 'Gene', '6390', (63, 67)) 53670 32971818 It was shown that negative SDHB staining is more commonly associated with mutations in SDHB, whereas weak diffuse staining often occurs in SDHD-mutated tumors. ('SDHD', 'Gene', (139, 143)) ('associated', 'Reg', (58, 68)) ('SDHD', 'Gene', '6392', (139, 143)) ('tumors', 'Disease', 'MESH:D009369', (152, 158)) ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('SDHB', 'Gene', '6390', (87, 91)) ('mutations', 'Var', (74, 83)) ('negative', 'NegReg', (18, 26)) ('SDHB', 'Gene', '6390', (27, 31)) ('tumors', 'Disease', (152, 158)) ('SDHB', 'Gene', (27, 31)) ('tumors', 'Phenotype', 'HP:0002664', (152, 158)) ('SDHB', 'Gene', (87, 91)) 53671 32971818 We also detected loss of SDHB expression in all patients with SDHB variants and weak diffuse SDHB staining in the majority of SDHD mutation carriers that support this finding. ('expression', 'MPA', (30, 40)) ('SDHB', 'Gene', '6390', (62, 66)) ('SDHB', 'Gene', (93, 97)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDHD', 'Gene', (126, 130)) ('SDHD', 'Gene', '6392', (126, 130)) ('SDHB', 'Gene', (25, 29)) ('loss', 'NegReg', (17, 21)) ('patients', 'Species', '9606', (48, 56)) ('SDHB', 'Gene', '6390', (93, 97)) ('variants', 'Var', (67, 75)) ('SDHB', 'Gene', (62, 66)) ('mutation', 'Var', (131, 139)) 53672 32971818 Studied patients carrying variants in SDHC showed both negative and weak diffuse SDHB staining. ('SDHC', 'Gene', (38, 42)) ('SDHC', 'Gene', '6391', (38, 42)) ('SDHB', 'Gene', '6390', (81, 85)) ('variants', 'Var', (26, 34)) ('SDHB', 'Gene', (81, 85)) ('patients', 'Species', '9606', (8, 16)) 53674 32971818 Generally, both patterns indicate SDH deficiency, which is a surrogate marker for SDHx germline mutations almost always causing the gene biallelic inactivation. ('SDH', 'Gene', (82, 85)) ('SDH', 'Gene', (34, 37)) ('SDH deficiency', 'Disease', (34, 48)) ('SDH deficiency', 'Disease', 'MESH:D007153', (34, 48)) ('SDH', 'Gene', '6390', (82, 85)) ('causing', 'Reg', (120, 127)) ('mutations', 'Var', (96, 105)) ('SDH', 'Gene', '6390', (34, 37)) 53675 32971818 Somatic events leading to biallelic inactivation have been rarely reported for the SDHx genes. ('SDH', 'Gene', '6390', (83, 86)) ('SDH', 'Gene', (83, 86)) ('biallelic', 'Var', (26, 35)) 53677 32971818 However, based on this conception, we can suppose that in the majority of studied patients with SDH deficiency, the mutations of SDHx genes are germline. ('SDH', 'Gene', '6390', (96, 99)) ('SDH', 'Gene', (129, 132)) ('patients', 'Species', '9606', (82, 90)) ('SDH', 'Gene', (96, 99)) ('mutations', 'Var', (116, 125)) ('SDH', 'Gene', '6390', (129, 132)) ('SDH deficiency', 'Disease', (96, 110)) ('SDH deficiency', 'Disease', 'MESH:D007153', (96, 110)) 53678 32971818 In one patient with a novel likely pathogenic frameshift SDHD variant, we found retention of SDHB expression. ('pathogenic', 'Reg', (35, 45)) ('SDHB', 'Gene', (93, 97)) ('patient', 'Species', '9606', (7, 14)) ('SDHD', 'Gene', '6392', (57, 61)) ('frameshift', 'Var', (46, 56)) ('SDHD', 'Gene', (57, 61)) ('SDHB', 'Gene', '6390', (93, 97)) 53679 32971818 In a patient with a pathogenic SDHA variant, we have seen completely absent SDHA expression and weak diffuse SDHB immunostaining that is in accordance with the literature. ('SDHA', 'Gene', '6389', (31, 35)) ('SDHA', 'Gene', '6389', (76, 80)) ('patient', 'Species', '9606', (5, 12)) ('SDHB', 'Gene', '6390', (109, 113)) ('variant', 'Var', (36, 43)) ('SDHB', 'Gene', (109, 113)) ('absent', 'NegReg', (69, 75)) ('SDHA', 'Gene', (31, 35)) ('SDHA', 'Gene', (76, 80)) ('pathogenic', 'Reg', (20, 30)) ('expression', 'MPA', (81, 91)) 53681 32971818 Negative SDHA expression is defined both when mutation leads to the truncated protein and owing to missense mutation. ('SDHA', 'Gene', '6389', (9, 13)) ('leads', 'Reg', (55, 60)) ('truncated protein', 'MPA', (68, 85)) ('SDHA', 'Gene', (9, 13)) ('mutation', 'Var', (46, 54)) ('missense mutation', 'Var', (99, 116)) 53683 32971818 Moreover, SDHA mutation is a rare event in PGLs; therefore, the use of SDHB immunohistochemistry seems to be more expedient than SDHA/SDHB immunohistochemistry for prediction of mutations in any SDHx genes. ('SDH', 'Gene', '6390', (10, 13)) ('SDHA', 'Gene', (10, 14)) ('SDHB', 'Gene', '6390', (71, 75)) ('SDHA', 'Gene', '6389', (129, 133)) ('SDH', 'Gene', '6390', (71, 74)) ('SDH', 'Gene', (195, 198)) ('SDHB', 'Gene', '6390', (134, 138)) ('SDHA', 'Gene', '6389', (10, 14)) ('SDH', 'Gene', (129, 132)) ('SDH', 'Gene', (10, 13)) ('SDHB', 'Gene', (71, 75)) ('SDHB', 'Gene', (134, 138)) ('SDH', 'Gene', '6390', (134, 137)) ('SDH', 'Gene', (71, 74)) ('SDH', 'Gene', '6390', (195, 198)) ('PGLs', 'Phenotype', 'HP:0002668', (43, 47)) ('SDH', 'Gene', (134, 137)) ('SDH', 'Gene', '6390', (129, 132)) ('mutations', 'Var', (178, 187)) ('SDHA', 'Gene', (129, 133)) 53684 32971818 The loss of SDHC expression was revealed in one out of three patients with variants in the SDHC gene. ('SDHC', 'Gene', (91, 95)) ('SDHC', 'Gene', '6391', (91, 95)) ('expression', 'MPA', (17, 27)) ('patients', 'Species', '9606', (61, 69)) ('SDHC', 'Gene', (12, 16)) ('loss', 'NegReg', (4, 8)) ('variants', 'Var', (75, 83)) ('SDHC', 'Gene', '6391', (12, 16)) 53685 32971818 This variant, NM_003001.3: c.224G > A, p.(Gly75Asp) (chr1: 161310428b rs786205147;189841), was described in the ClinVar database as a germline likely pathogenic variant associated with the hereditary cancer-predisposing syndrome and Carney triad with no experimental evidence of its pathogenicity to date. ('hereditary cancer', 'Disease', (189, 206)) ('Carney triad', 'Disease', (233, 245)) ('c.224G > A', 'Var', (27, 37)) ('cancer', 'Phenotype', 'HP:0002664', (200, 206)) ('p.(Gly75Asp)', 'SUBSTITUTION', 'None', (39, 51)) ('associated', 'Reg', (169, 179)) ('pathogenic', 'Reg', (150, 160)) ('p.(Gly75Asp', 'Var', (39, 50)) ('rs786205147', 'DBSNP_MENTION', 'None', (70, 81)) ('hereditary cancer', 'Disease', 'MESH:D009369', (189, 206)) ('rs786205147', 'Var', (70, 81)) 53687 32971818 Therefore, we can suggest that, except for SDHA, no evident correlations have been found between negative SDHC and SDHD immunohistochemistry and the presence of pathogenic variants in the corresponding genes. ('SDHD', 'Gene', '6392', (115, 119)) ('SDHC', 'Gene', (106, 110)) ('variants', 'Var', (172, 180)) ('SDHD', 'Gene', (115, 119)) ('SDHC', 'Gene', '6391', (106, 110)) ('SDHA', 'Gene', '6389', (43, 47)) ('SDHA', 'Gene', (43, 47)) 53688 32971818 Among 42 patients with CPGLs, we revealed pathogenic RET variants in three cases and a likely pathogenic IDH1 variant in one patient. ('CPGLs', 'Chemical', '-', (23, 28)) ('patients', 'Species', '9606', (9, 17)) ('RET', 'Gene', (53, 56)) ('CPGL', 'Phenotype', 'HP:0100635', (23, 27)) ('IDH1', 'Gene', (105, 109)) ('PGLs', 'Phenotype', 'HP:0002668', (24, 28)) ('IDH1', 'Gene', '3417', (105, 109)) ('RET', 'Gene', '5979', (53, 56)) ('patient', 'Species', '9606', (125, 132)) ('patient', 'Species', '9606', (9, 16)) ('variants', 'Var', (57, 65)) ('pathogenic', 'Reg', (42, 52)) 53692 32971818 However, more cases are needed to assess the impact of IDHx mutations on the stability of the SDH complex. ('mutations', 'Var', (60, 69)) ('IDHx', 'Gene', (55, 59)) ('SDH', 'Gene', '6390', (94, 97)) ('SDH', 'Gene', (94, 97)) 53693 32971818 Despite the great results showing a high correlation of SDHB immunohistochemistry with the presence of SDHx variants (94%), negative or weak diffuse SDHB staining has also been found in 42% of tumors without pathogenic/likely pathogenic variants in any SDHx genes. ('SDHB', 'Gene', '6390', (56, 60)) ('SDH', 'Gene', (253, 256)) ('SDHB', 'Gene', '6390', (149, 153)) ('SDHB', 'Gene', (56, 60)) ('SDH', 'Gene', '6390', (103, 106)) ('SDHB', 'Gene', (149, 153)) ('SDH', 'Gene', '6390', (149, 152)) ('tumors', 'Disease', (193, 199)) ('SDH', 'Gene', '6390', (56, 59)) ('tumors', 'Phenotype', 'HP:0002664', (193, 199)) ('variants', 'Var', (108, 116)) ('tumor', 'Phenotype', 'HP:0002664', (193, 198)) ('SDH', 'Gene', (149, 152)) ('SDH', 'Gene', (103, 106)) ('SDH', 'Gene', (56, 59)) ('tumors', 'Disease', 'MESH:D009369', (193, 199)) ('SDH', 'Gene', '6390', (253, 256)) 53694 32971818 In this case, SDH deficiency can be caused by mutations in the DNA regions, which have not been screened, or epimutations. ('SDH deficiency', 'Disease', 'MESH:D007153', (14, 28)) ('mutations', 'Var', (46, 55)) ('DNA regions', 'Gene', (63, 74)) ('caused by', 'Reg', (36, 45)) ('epimutations', 'Var', (109, 121)) ('SDH deficiency', 'Disease', (14, 28)) 53695 32971818 Given these data, we presumed that SDHB immunohistochemistry could be used for the initial assessment of SDHx variants in CPGLs with genetic testing in parallel. ('SDH', 'Gene', (105, 108)) ('SDH', 'Gene', '6390', (35, 38)) ('PGLs', 'Phenotype', 'HP:0002668', (123, 127)) ('SDHB', 'Gene', (35, 39)) ('CPGLs', 'Chemical', '-', (122, 127)) ('variants', 'Var', (110, 118)) ('CPGL', 'Phenotype', 'HP:0100635', (122, 126)) ('SDH', 'Gene', '6390', (105, 108)) ('SDH', 'Gene', (35, 38)) ('SDHB', 'Gene', '6390', (35, 39)) 53696 32971818 Additional SDHA staining increases the cost of the IHC analysis, but among PGLs/PCCs, SDHA mutation frequency is extremely low, and in the majority of such cases, negative or weak diffuse SDHB staining is also observed. ('SDHA', 'Gene', '6389', (86, 90)) ('SDHA', 'Gene', '6389', (11, 15)) ('mutation', 'Var', (91, 99)) ('SDHB', 'Gene', '6390', (188, 192)) ('PGLs', 'Phenotype', 'HP:0002668', (75, 79)) ('low', 'NegReg', (123, 126)) ('SDHA', 'Gene', (11, 15)) ('SDHA', 'Gene', (86, 90)) ('SDHB', 'Gene', (188, 192)) 53709 32971818 VCF files included data on allele frequency (1000 Genomes Project, ExAC, gnomAD, Kaviar, and ESP-6500 ), variant annotation (ClinVar, dbSNP, and COSMIC), position region conservation score (PhastCons and PhyloP [both PHAST v. 1.5, Siepel Lab, Cold Spring Harbor, NY, USA]), localization of variants in protein domains (InterPro [v. 81.0, Wellcome Genome Campus, Hinxton, Cambridgeshire, UK]), as well as on pathogenicity prediction (SIFT [v. 6.2.1, Fred Hutchinson Cancer Research Center, Seattle, WA, USA], PolyPhen2 [v. 2.2.2, Harvard Medical School, Boston, MA, USA], MutationTaster [v. 2013-03-20, "Charite-Universitatsmedizin Berlin", Berlin, Germany], and LRT [v. 0.2, Tel-Aviv University, Tel Aviv, Israel]). ('Cancer', 'Phenotype', 'HP:0002664', (465, 471)) ('Cancer', 'Disease', (465, 471)) ('2.1', 'Gene', (444, 447)) ('2.1', 'Gene', '6700', (444, 447)) ('Hutchinson Cancer', 'Phenotype', 'HP:0012413', (454, 471)) ('Cancer', 'Disease', 'MESH:D009369', (465, 471)) ('Cold Spring Harbor', 'Disease', (243, 261)) ('Cold Spring Harbor', 'Disease', 'MESH:C537062', (243, 261)) ('Tel', 'Gene', '2120', (696, 699)) ('Tel', 'Gene', (675, 678)) ('variants', 'Var', (290, 298)) ('Tel', 'Gene', '2120', (675, 678)) ('Tel', 'Gene', (696, 699)) 53717 32971818 Correlation analysis between SDHB staining and the presence of mutations in any SDHx genes was performed using the Spearman's rank correlation test with STATISTICA 10 (StatSoft Inc., Tulsa, OK, USA). ('mutations', 'Var', (63, 72)) ('SDHB', 'Gene', '6390', (29, 33)) ('SDHB', 'Gene', (29, 33)) ('SDH', 'Gene', '6390', (80, 83)) ('SDH', 'Gene', '6390', (29, 32)) ('SDH', 'Gene', (80, 83)) ('SDH', 'Gene', (29, 32)) 53718 32971818 This is the first study on the correlation between SDHx mutation status and their protein expression, respectively estimated with exome sequencing and IHC in a representative set of CPGLs. ('SDH', 'Gene', '6390', (51, 54)) ('protein expression', 'MPA', (82, 100)) ('CPGL', 'Phenotype', 'HP:0100635', (182, 186)) ('SDH', 'Gene', (51, 54)) ('CPGLs', 'Chemical', '-', (182, 187)) ('PGLs', 'Phenotype', 'HP:0002668', (183, 187)) ('mutation', 'Var', (56, 64)) 53719 32971818 It has previously been reported that negative or weak diffuse SDHB staining has high sensitivity and specificity for the prediction of mutations of SDHx in PGLs/PCCs. ('SDH', 'Gene', '6390', (62, 65)) ('SDH', 'Gene', (62, 65)) ('SDH', 'Gene', '6390', (148, 151)) ('mutations', 'Var', (135, 144)) ('SDH', 'Gene', (148, 151)) ('SDHB', 'Gene', '6390', (62, 66)) ('PGLs', 'Phenotype', 'HP:0002668', (156, 160)) ('SDHB', 'Gene', (62, 66)) 53722 32971818 Based on the collected data, we believe that SDHB immunohistochemistry could be used for primary identifications of patients potentially carrying SDHx variants who should be further referred for genetic testing. ('variants', 'Var', (151, 159)) ('patients', 'Species', '9606', (116, 124)) ('SDH', 'Gene', '6390', (146, 149)) ('SDH', 'Gene', (45, 48)) ('SDHB', 'Gene', '6390', (45, 49)) ('SDHB', 'Gene', (45, 49)) ('SDH', 'Gene', (146, 149)) ('SDH', 'Gene', '6390', (45, 48)) 53731 32732920 The AUCs for differentiating paragangliomas and UCDs were 0.920, 0.888, 0.909, and 0.765 for SUVmax, SUVmean, SUVpeak, and TLG, respectively. ('0.765', 'Var', (83, 88)) ('TLG', 'Chemical', '-', (123, 126)) ('paragangliomas', 'Disease', 'MESH:D010235', (29, 43)) ('paragangliomas', 'Disease', (29, 43)) ('CDs', 'Chemical', 'MESH:D002104', (49, 52)) ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) ('paragangliomas', 'Phenotype', 'HP:0002668', (29, 43)) 53807 32732920 Some paragangliomas are caused by a germline mutation in SDH (SDHB, SDHC, and SDHD) or VHL tumor suppressor genes. ('SDH', 'Gene', (68, 71)) ('VHL tumor', 'Disease', (87, 96)) ('SDHB', 'Gene', '6390', (62, 66)) ('SDH', 'Gene', '6390', (57, 60)) ('paragangliomas', 'Disease', (5, 19)) ('SDHC', 'Gene', (68, 72)) ('SDH', 'Gene', '6390', (62, 65)) ('VHL tumor', 'Disease', 'MESH:D006623', (87, 96)) ('SDHD', 'Gene', '6392', (78, 82)) ('caused by', 'Reg', (24, 33)) ('paraganglioma', 'Phenotype', 'HP:0002668', (5, 18)) ('SDH', 'Gene', '6390', (78, 81)) ('SDHB', 'Gene', (62, 66)) ('SDH', 'Gene', (57, 60)) ('SDH', 'Gene', (62, 65)) ('SDHD', 'Gene', (78, 82)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('paragangliomas', 'Disease', 'MESH:D010235', (5, 19)) ('SDH', 'Gene', '6390', (68, 71)) ('SDH', 'Gene', (78, 81)) ('paragangliomas', 'Phenotype', 'HP:0002668', (5, 19)) ('SDHC', 'Gene', '6391', (68, 72)) ('germline mutation', 'Var', (36, 53)) 53808 32732920 Mutations in these genes are associated with the induction of a hypoxic response under normal oxygen conditions, a response mediated by the oxygen-regulated transcription factor hypoxia-inducible factor 1a. ('oxygen', 'Chemical', 'MESH:D010100', (140, 146)) ('hypoxia-inducible factor 1a', 'Gene', '3091', (178, 205)) ('Mutations', 'Var', (0, 9)) ('oxygen', 'Chemical', 'MESH:D010100', (94, 100)) ('associated', 'Reg', (29, 39)) ('hypoxia-inducible factor 1a', 'Gene', (178, 205)) ('hypoxic response', 'MPA', (64, 80)) 53809 32732920 SDH and VHL mutations could result in the stabilization of hypoxia-inducible factor 1a leading to inhibition of the tricarboxylic acid cycle and increased glycolysis, which could in turn cause increased glucose demand and high FDG uptake (Warburg effect). ('VHL', 'Gene', '7428', (8, 11)) ('high FDG uptake', 'MPA', (222, 237)) ('tricarboxylic acid cycle', 'MPA', (116, 140)) ('SDH', 'Gene', '6390', (0, 3)) ('increased glucose', 'Phenotype', 'HP:0003074', (193, 210)) ('glycolysis', 'MPA', (155, 165)) ('glucose', 'Chemical', 'MESH:D005947', (203, 210)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (116, 134)) ('SDH', 'Gene', (0, 3)) ('glucose demand', 'MPA', (203, 217)) ('inhibition', 'NegReg', (98, 108)) ('increased', 'PosReg', (145, 154)) ('increased', 'PosReg', (193, 202)) ('cause', 'Reg', (187, 192)) ('VHL', 'Gene', (8, 11)) ('hypoxia-inducible factor 1a', 'Gene', (59, 86)) ('FDG', 'Chemical', 'MESH:D019788', (227, 230)) ('mutations', 'Var', (12, 21)) ('stabilization', 'MPA', (42, 55)) ('hypoxia-inducible factor 1a', 'Gene', '3091', (59, 86)) 53844 32207268 Additionally, in this study, metastatic PPGLs at diagnosis or during the follow-up period were associated with a 2.40-fold higher risk of mortality than non-metastatic PPGLs, adjusted for age, sex, cerebrovascular diseases, cardiovascular disease, diabetes mellitus, and fractures. ('fractures', 'Disease', 'MESH:D050723', (271, 280)) ('diabetes mellitus', 'Disease', (248, 265)) ('cerebrovascular diseases', 'Disease', (198, 222)) ('metastatic PPGLs', 'Var', (29, 45)) ('PGL', 'Phenotype', 'HP:0002668', (169, 172)) ('cardiovascular disease', 'Disease', (224, 246)) ('diabetes mellitus', 'Disease', 'MESH:D003920', (248, 265)) ('cerebrovascular diseases', 'Disease', 'MESH:D002561', (198, 222)) ('PPGLs', 'Chemical', '-', (40, 45)) ('PGL', 'Phenotype', 'HP:0002668', (41, 44)) ('mortality', 'Disease', 'MESH:D003643', (138, 147)) ('cardiovascular disease', 'Phenotype', 'HP:0001626', (224, 246)) ('PPGLs', 'Chemical', '-', (168, 173)) ('fractures', 'Disease', (271, 280)) ('cardiovascular disease', 'Disease', 'MESH:D002318', (224, 246)) ('diabetes mellitus', 'Phenotype', 'HP:0000819', (248, 265)) ('mortality', 'Disease', (138, 147)) 53848 31185588 Chiari Malformation Type 1 in EPAS1-Associated Syndrome A syndrome of multiple paragangliomas/pheochromocytomas, somatostatinoma, and polycythemia due to somatic mosaic gain-of-function mutation of EPAS1, encoding HIF-2alpha, was previously described. ('polycythemia', 'Disease', (134, 146)) ('EPAS1', 'Gene', (30, 35)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('paragangliomas', 'Phenotype', 'HP:0002668', (79, 93)) ('polycythemia', 'Disease', 'MESH:D011086', (134, 146)) ('EPAS1', 'Gene', '2034', (198, 203)) ('mutation', 'Var', (186, 194)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (94, 110)) ('Malformation Type', 'Disease', (7, 24)) ('Chiari Malformation', 'Phenotype', 'HP:0002308', (0, 19)) ('gain-of-function', 'PosReg', (169, 185)) ('HIF-2alpha', 'Gene', '2034', (214, 224)) ('EPAS1', 'Gene', '2034', (30, 35)) ('polycythemia', 'Phenotype', 'HP:0001901', (134, 146)) ('somatostatinoma', 'Disease', 'MESH:D013005', (113, 128)) ('A syndrome of multiple paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (56, 111)) ('somatostatinoma', 'Disease', (113, 128)) ('EPAS1', 'Gene', (198, 203)) ('Malformation Type', 'Disease', 'MESH:D000014', (7, 24)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (94, 111)) ('HIF-2alpha', 'Gene', (214, 224)) ('Chiari Malformation Type 1', 'Phenotype', 'HP:0007099', (0, 26)) 53850 31185588 Abnormal bone growth of the skull base may lead to Chiari malformation type I. ('Chiari malformation', 'Phenotype', 'HP:0002308', (51, 70)) ('Chiari malformation type I.', 'Phenotype', 'HP:0007099', (51, 78)) ('Chiari malformation type I', 'Phenotype', 'HP:0007099', (51, 77)) ('lead to', 'Reg', (43, 50)) ('bone growth of the skull', 'Phenotype', 'HP:0004437', (9, 33)) ('Abnormal', 'Var', (0, 8)) ('Chiari malformation type I', 'Disease', (51, 77)) ('Abnormal bone growth', 'Phenotype', 'HP:0011849', (0, 20)) ('Chiari malformation type I', 'Disease', 'MESH:D001139', (51, 77)) 53851 31185588 We report two cases of EPAS1 gain-of-function mutation syndrome with Chiari malformation and developmental skull base anomalies. ('gain-of-function', 'PosReg', (29, 45)) ('Chiari malformation', 'Phenotype', 'HP:0002308', (69, 88)) ('Chiari malformation', 'Disease', (69, 88)) ('EPAS1', 'Gene', '2034', (23, 28)) ('mutation', 'Var', (46, 54)) ('skull base anomalies', 'Phenotype', 'HP:0002693', (107, 127)) ('EPAS1', 'Gene', (23, 28)) ('Chiari malformation', 'Disease', 'MESH:D001139', (69, 88)) 53853 31185588 The syndrome was confirmed genetically by identification of the functional EPAS1 gain-of-function mutation in the resected tumors and circulating leukocytes. ('EPAS1', 'Gene', (75, 80)) ('tumors', 'Disease', 'MESH:D009369', (123, 129)) ('tumors', 'Disease', (123, 129)) ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('mutation', 'Var', (98, 106)) ('gain-of-function', 'PosReg', (81, 97)) ('EPAS1', 'Gene', '2034', (75, 80)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) 53854 31185588 Both patients were confirmed for characteristics of EPAS1 gain-of-function mutation syndrome by complete blood count (CBC), plasma biochemistry, and computed tomography (CT) of the abdomen and pelvis. ('patients', 'Species', '9606', (5, 13)) ('mutation', 'Var', (75, 83)) ('EPAS1', 'Gene', '2034', (52, 57)) ('EPAS1', 'Gene', (52, 57)) ('gain-of-function', 'PosReg', (58, 74)) 53856 31185588 The present study implicates EPAS1 mutations in abnormal posterior fossa development resulting in Chiari malformation type I. Chiari malformation type I is characterized by caudal displacement of the cerebellar tonsils through the foramen magnum of at least 5 mm in adults. ('Chiari malformation', 'Phenotype', 'HP:0002308', (127, 146)) ('Chiari malformation type I', 'Phenotype', 'HP:0007099', (127, 153)) ('Chiari malformation type I', 'Disease', (98, 124)) ('Chiari malformation type I', 'Disease', 'MESH:D001139', (98, 124)) ('Chiari malformation type I', 'Disease', (127, 153)) ('Chiari malformation type I', 'Phenotype', 'HP:0007099', (98, 124)) ('mutations', 'Var', (35, 44)) ('Chiari malformation', 'Phenotype', 'HP:0002308', (98, 117)) ('Chiari malformation type I.', 'Phenotype', 'HP:0007099', (98, 125)) ('EPAS1', 'Gene', '2034', (29, 34)) ('Chiari malformation type I', 'Disease', 'MESH:D001139', (127, 153)) ('abnormal posterior fossa', 'Phenotype', 'HP:0000932', (48, 72)) ('EPAS1', 'Gene', (29, 34)) 53861 31185588 Mosaic gain-of-function EPAS1 mutations have been found to cause a syndrome encompassing multiple paragangliomas/pheochromocytomas, somatostatinoma, and polycythemia, also called Pacak-Zhuang syndrome. ('multiple paragangliomas/pheochromocytomas', 'Disease', (89, 130)) ('paragangliomas', 'Phenotype', 'HP:0002668', (98, 112)) ('somatostatinoma', 'Disease', 'MESH:D013005', (132, 147)) ('EPAS1', 'Gene', '2034', (24, 29)) ('polycythemia', 'Phenotype', 'HP:0001901', (153, 165)) ('somatostatinoma', 'Disease', (132, 147)) ('gain-of-function', 'PosReg', (7, 23)) ('polycythemia', 'Disease', 'MESH:D011086', (153, 165)) ('EPAS1', 'Gene', (24, 29)) ('Pacak-Zhuang syndrome', 'Disease', (179, 200)) ('multiple paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (89, 130)) ('paraganglioma', 'Phenotype', 'HP:0002668', (98, 111)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (113, 129)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (113, 130)) ('mutations', 'Var', (30, 39)) ('syndrome', 'Disease', (67, 75)) ('polycythemia', 'Disease', (153, 165)) 53862 31185588 Herein, we report two patients with EPAS1 gain-of-function mutation syndrome, Chiari malformation type I and other developmental anomalies of the posterior fossa and spine. ('EPAS1', 'Gene', '2034', (36, 41)) ('Chiari malformation type I', 'Disease', (78, 104)) ('anomalies of the posterior fossa', 'Phenotype', 'HP:0000932', (129, 161)) ('EPAS1', 'Gene', (36, 41)) ('Chiari malformation type I', 'Disease', 'MESH:D001139', (78, 104)) ('patients', 'Species', '9606', (22, 30)) ('Chiari malformation type I', 'Phenotype', 'HP:0007099', (78, 104)) ('mutation', 'Var', (59, 67)) ('gain-of-function', 'PosReg', (42, 58)) ('Chiari malformation', 'Phenotype', 'HP:0002308', (78, 97)) 53870 31185588 Identification of the EPAS1 gain-of-function mutation in the resected tumor tissues and circulating leukocytes confirmed the underlying syndrome. ('EPAS1', 'Gene', (22, 27)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('tumor', 'Disease', (70, 75)) ('mutation', 'Var', (45, 53)) ('gain-of-function', 'PosReg', (28, 44)) ('EPAS1', 'Gene', '2034', (22, 27)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) 53901 31185588 Thus, this suggests that the gain-of-function mutation in HIF-2alpha leads to the persistence of cartilaginous structures due to delayed closure of the dorsal mesoderm or lack of endochondral ossification in bony growth centers of the sacral spinous processes and lamina. ('gain-of-function', 'PosReg', (29, 45)) ('HIF-2alpha', 'Gene', '2034', (58, 68)) ('lack', 'NegReg', (171, 175)) ('cartilaginous', 'Disease', 'MESH:D015831', (97, 110)) ('delayed closure', 'Phenotype', 'HP:0000270', (129, 144)) ('endochondral ossification', 'CPA', (179, 204)) ('cartilaginous', 'Disease', (97, 110)) ('mutation', 'Var', (46, 54)) ('HIF-2alpha', 'Gene', (58, 68)) ('delayed closure of the dorsal mesoderm', 'CPA', (129, 167)) 53910 31185588 The appearance of incidental Chiari malformation and reduced bony development of the spine and skull base in our patients with gain-of-function EPAS1 mutation suggests that persistent hypoxic signaling resulted in incomplete mesenchymal development that manifested as 1) reduced ossification of posterior fossa bones and, secondarily, Chiari I malformation, 2) impaired development of the sacrum leading to spina bifida occulta of S1 and segmentation anomalies of the sacral ala, and 3) impaired development of other brain structures resulting in asymptomatic brain vascular anomalies. ('EPAS1', 'Gene', '2034', (144, 149)) ('vascular anomalies', 'Phenotype', 'HP:0002597', (566, 584)) ('segmentation anomalies of the sacral ala', 'Phenotype', 'HP:0008455', (438, 478)) ('impaired', 'NegReg', (361, 369)) ('Chiari malformation', 'Disease', 'MESH:D001139', (29, 48)) ('hypoxic', 'Disease', 'MESH:D000860', (184, 191)) ('reduced', 'NegReg', (271, 278)) ('impaired', 'NegReg', (487, 495)) ('Chiari malformation', 'Phenotype', 'HP:0002308', (29, 48)) ('development of other brain structures', 'CPA', (496, 533)) ('hypoxic', 'Disease', (184, 191)) ('impaired development of the sacrum', 'Phenotype', 'HP:0008455', (361, 395)) ('segmentation anomalies of the sacral ala', 'Disease', 'MESH:C537538', (438, 478)) ('development of the sacrum', 'CPA', (370, 395)) ('segmentation anomalies of the sacral ala', 'Disease', (438, 478)) ('ossification', 'CPA', (279, 291)) ('patients', 'Species', '9606', (113, 121)) ('EPAS1', 'Gene', (144, 149)) ('brain vascular anomalies', 'Disease', (560, 584)) ('brain vascular anomalies', 'Disease', 'MESH:D002561', (560, 584)) ('spina bifida occulta of S1', 'CPA', (407, 433)) ('mutation', 'Var', (150, 158)) ('gain-of-function', 'PosReg', (127, 143)) ('Chiari I malformation', 'Phenotype', 'HP:0007099', (335, 356)) ('spina bifida', 'Phenotype', 'HP:0002414', (407, 419)) ('reduced ossification', 'Phenotype', 'HP:0002750', (271, 291)) ('Chiari malformation', 'Disease', (29, 48)) ('spina bifida occulta', 'Phenotype', 'HP:0003298', (407, 427)) ('spina bifida occulta of S1', 'Phenotype', 'HP:0004614', (407, 433)) 53919 31185588 Herein, we describe two patients with EPAS1-gain-of-function (Pacak-Zhuang) syndrome and features of incidental Chiari I malformation, i.e., greater than 5 mm tonsillar herniation below the foramen magnum. ('EPAS1', 'Gene', '2034', (38, 43)) ('greater', 'Var', (141, 148)) ('EPAS1', 'Gene', (38, 43)) ('Chiari I malformation', 'Phenotype', 'HP:0007099', (112, 133)) ('patients', 'Species', '9606', (24, 32)) 53921 31185588 The reduced boney development of the spine and skull base in these patients with gain-of-function mutation in EPAS1 suggests that persistent hypoxic signaling results in incomplete mesenchymal development. ('reduced', 'NegReg', (4, 11)) ('mutation', 'Var', (98, 106)) ('hypoxic', 'Disease', (141, 148)) ('incomplete', 'NegReg', (170, 180)) ('patients', 'Species', '9606', (67, 75)) ('hypoxic', 'Disease', 'MESH:D000860', (141, 148)) ('gain-of-function', 'PosReg', (81, 97)) ('EPAS1', 'Gene', '2034', (110, 115)) ('reduced boney development', 'Phenotype', 'HP:0002750', (4, 29)) ('EPAS1', 'Gene', (110, 115)) 53922 31185588 This report implicates mutations in EPAS1, encoding HIF-2alpha, in the development of Chiari malformation type I. Conceptualization:identified malformation: J.S.R., Z.Z., K.P., J.D.H. ('K.P.', 'Var', (171, 175)) ('Chiari malformation', 'Phenotype', 'HP:0002308', (86, 105)) ('HIF-2alpha', 'Gene', (52, 62)) ('EPAS1', 'Gene', '2034', (36, 41)) ('Chiari malformation type I.', 'Phenotype', 'HP:0007099', (86, 113)) ('Chiari malformation type I', 'Phenotype', 'HP:0007099', (86, 112)) ('EPAS1', 'Gene', (36, 41)) ('HIF-2alpha', 'Gene', '2034', (52, 62)) ('J.S.R.', 'Var', (157, 163)) ('Z.Z.', 'Var', (165, 169)) ('Chiari malformation type I', 'Disease', (86, 112)) ('Chiari malformation type I', 'Disease', 'MESH:D001139', (86, 112)) 54008 28400922 Catecholamines cause myocardial toxicity by enhancing lipid mobility, calcium overloading, oxygen derived free radical production, increased sarcolemmal permeability as well as by provoking a state of oxygen supply-demand mismatch. ('calcium overloading', 'MPA', (70, 89)) ('lipid', 'Chemical', 'MESH:D008055', (54, 59)) ('provoking', 'Reg', (180, 189)) ('enhancing', 'PosReg', (44, 53)) ('increased', 'PosReg', (131, 140)) ('sarcolemmal permeability', 'MPA', (141, 165)) ('oxygen', 'Chemical', 'MESH:D010100', (201, 207)) ('oxygen derived free radical production', 'MPA', (91, 129)) ('Catecholamines', 'Chemical', 'MESH:D002395', (0, 14)) ('myocardial toxicity', 'Disease', 'MESH:D009202', (21, 40)) ('calcium', 'Chemical', 'MESH:D002118', (70, 77)) ('man', 'Species', '9606', (217, 220)) ('oxygen derived free radical', 'Chemical', '-', (91, 118)) ('myocardial toxicity', 'Disease', (21, 40)) ('Catecholamines', 'Var', (0, 14)) ('lipid mobility', 'MPA', (54, 68)) ('oxygen', 'Chemical', 'MESH:D010100', (91, 97)) 54011 28400922 In 2 of 3 patients that developed acute LV dysfunction in our study such events followed acute stress, suggesting that increases in catecholamine levels over and above the background elevation precipitated by "stress" may provoke acute LV dysfunction in pheo patients in a manner similar to TC. ('TC', 'Phenotype', 'HP:0011665', (291, 293)) ('LV dysfunction', 'Disease', 'MESH:C535509', (236, 250)) ('LV dysfunction', 'Disease', 'MESH:C535509', (40, 54)) ('patients', 'Species', '9606', (259, 267)) ('man', 'Species', '9606', (273, 276)) ('increases', 'Var', (119, 128)) ('catecholamine', 'Chemical', 'MESH:D002395', (132, 145)) ('catecholamine levels', 'MPA', (132, 152)) ('provoke', 'Reg', (222, 229)) ('LV dysfunction', 'Disease', (40, 54)) ('increases in catecholamine levels', 'Phenotype', 'HP:0003334', (119, 152)) ('pheo', 'Phenotype', 'HP:0002666', (254, 258)) ('LV dysfunction', 'Disease', (236, 250)) ('patients', 'Species', '9606', (10, 18)) 54051 27818820 IHC was performed with the following panel of antibodies: Pancytokeratin (PanCK) (clone AE1/AE3, Dako), vimentin (clone V-9, Dako), EMA (clone E29, Dako), CD99 (clone 12E7, Dako), calretinin (5A5, LabIndia), inhibin (AMY82, LabIndia), S-100 (Leica), neuron-specific enolase (NSE) (Dako), chromogranin-A (clone 5H7, Leica), synaptophysin (clone 27G12, Leica), desmin (clone 33, Dako), smooth muscle actin (SMA) (clone 1A4, Novocastra), and S-100 (Leica). ('SMA', 'Gene', '6606', (405, 408)) ('CD99', 'Gene', '4267', (155, 159)) ('S-100', 'Gene', '6271', (235, 240)) ('calretinin', 'Gene', '794', (180, 190)) ('AE3', 'Gene', (92, 95)) ('vimentin', 'Gene', '7431', (104, 112)) ('S-100', 'Gene', (439, 444)) ('vimentin', 'Gene', (104, 112)) ('NSE', 'Gene', '2026', (275, 278)) ('NSE', 'Gene', (275, 278)) ('chromogranin-A', 'Gene', (288, 302)) ('AE1', 'Gene', '6521', (88, 91)) ('S-100', 'Gene', '6271', (439, 444)) ('synaptophysin', 'Gene', (323, 336)) ('SMA', 'Gene', (405, 408)) ('AE3', 'Gene', '6508', (92, 95)) ('chromogranin-A', 'Gene', '1113', (288, 302)) ('desmin', 'Gene', (359, 365)) ('clone', 'Var', (338, 343)) ('neuron-specific enolase', 'Gene', (250, 273)) ('AE1', 'Gene', (88, 91)) ('synaptophysin', 'Gene', '6855', (323, 336)) ('calretinin', 'Gene', (180, 190)) ('neuron-specific enolase', 'Gene', '2026', (250, 273)) ('CD99', 'Gene', (155, 159)) ('desmin', 'Gene', '1674', (359, 365)) ('S-100', 'Gene', (235, 240)) 54083 27818820 Luteinized granulosa cell tumor shows varying presence of nuclear grooves with vimentin, inhibin, calretinin, CD99, and SMA positivity with variable immunoreactivity for desmin and PanCK and negativity with EMA. ('granulosa cell tumor', 'Disease', 'MESH:D006106', (11, 31)) ('vimentin', 'Gene', (79, 87)) ('calretinin', 'Gene', '794', (98, 108)) ('SMA', 'Gene', '6606', (120, 123)) ('granulosa cell tumor', 'Disease', (11, 31)) ('CD99', 'Gene', '4267', (110, 114)) ('immunoreactivity', 'MPA', (149, 165)) ('inhibin', 'Protein', (89, 96)) ('CD99', 'Gene', (110, 114)) ('Luteinized granulosa cell tumor', 'Phenotype', 'HP:0031919', (0, 31)) ('positivity', 'Var', (124, 134)) ('calretinin', 'Gene', (98, 108)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('desmin', 'Gene', (170, 176)) ('PanCK', 'Protein', (181, 186)) ('vimentin', 'Gene', '7431', (79, 87)) ('SMA', 'Gene', (120, 123)) ('desmin', 'Gene', '1674', (170, 176)) 54127 26299943 Because of a 50% stenosis in the left circumflex artery, patient PC-4 was initially treated as having an AMI and weaned off ECMO support after 48 h under stable hemodynamic conditions. ('stenosis', 'Var', (17, 25)) ('PC-4', 'Gene', '3475', (65, 69)) ('patient', 'Species', '9606', (57, 64)) ('PC-4', 'Gene', (65, 69)) 54145 26299943 Patients DK-1 and DK-2 were admitted to the emergency department with out-of-hospital cardiac arrest. ('cardiac arrest', 'Disease', 'MESH:D006323', (86, 100)) ('DK-2', 'Var', (18, 22)) ('cardiac arrest', 'Disease', (86, 100)) ('cardiac arrest', 'Phenotype', 'HP:0001695', (86, 100)) ('Patients', 'Species', '9606', (0, 8)) ('DK-1', 'Gene', '28491', (9, 13)) ('DK-1', 'Gene', (9, 13)) 54246 22584712 On the other hand, human disease susceptibility can be seen as the result of either rare germline genetic variations of high penetrance or as common genomic variants of low penetrance. ('variations', 'Var', (106, 116)) ('human', 'Species', '9606', (19, 24)) ('human disease susceptibility', 'Disease', (19, 47)) 54247 22584712 In this way, a vast variety of allelic alterations have been identified that correlate with the risk of cancer, other common diseases (e.g., diabetes, hypertension, autism, obesity, etc.) ('obesity', 'Disease', (173, 180)) ('allelic alterations', 'Var', (31, 50)) ('hypertension', 'Disease', 'MESH:D006973', (151, 163)) ('cancer', 'Phenotype', 'HP:0002664', (104, 110)) ('correlate', 'Reg', (77, 86)) ('autism', 'Disease', (165, 171)) ('diabetes', 'Disease', (141, 149)) ('obesity', 'Phenotype', 'HP:0001513', (173, 180)) ('hypertension', 'Phenotype', 'HP:0000822', (151, 163)) ('hypertension', 'Disease', (151, 163)) ('diabetes', 'Disease', 'MESH:D003920', (141, 149)) ('obesity', 'Disease', 'MESH:D009765', (173, 180)) ('cancer', 'Disease', (104, 110)) ('cancer', 'Disease', 'MESH:D009369', (104, 110)) ('autism', 'Phenotype', 'HP:0000717', (165, 171)) ('autism', 'Disease', 'MESH:D001321', (165, 171)) 54254 22584712 For instance the HCP5 single nucleotide polymorphism serves as a predictor for a hypersensitivity to antiviral drug medications, and the CYP2C19 variant is associated with a diminished clopidogrel response,. ('single nucleotide polymorphism', 'Var', (22, 52)) ('hypersensitivity', 'Disease', 'MESH:D004342', (81, 97)) ('HCP5', 'Gene', '10866', (17, 21)) ('diminished', 'NegReg', (174, 184)) ('CYP2C19', 'Gene', (137, 144)) ('clopidogrel response', 'MPA', (185, 205)) ('HCP5', 'Gene', (17, 21)) ('CYP2C19', 'Gene', '1557', (137, 144)) ('clopidogrel', 'Chemical', 'MESH:D000077144', (185, 196)) ('hypersensitivity', 'Disease', (81, 97)) 54260 22584712 MEN 2 is an autosomal-dominant, transmitted tumor syndrome caused by germline mutation in the RET (REarrangend during Transfection) proto-oncogene and is comprised of the key endocrine neoplasia components of pheochromocytoma, hyperparathyroidism, and, importantly, medullary thyroid carcinoma (MTC) as the life-limiting alteration,. ('endocrine neoplasia', 'Disease', (175, 194)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (266, 293)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (276, 293)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (227, 246)) ('neoplasia', 'Phenotype', 'HP:0002664', (185, 194)) ('RET', 'Gene', '5979', (94, 97)) ('carcinoma', 'Phenotype', 'HP:0030731', (284, 293)) ('MEN', 'Species', '9606', (0, 3)) ('germline mutation', 'Var', (69, 86)) ('endocrine neoplasia', 'Disease', 'MESH:D009377', (175, 194)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (209, 225)) ('tumor syndrome', 'Disease', (44, 58)) ('tumor syndrome', 'Disease', 'MESH:D009369', (44, 58)) ('RET', 'Gene', (94, 97)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('pheochromocytoma', 'Disease', (209, 225)) ('hyperparathyroidism', 'Disease', (227, 246)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (276, 293)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (209, 225)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (175, 194)) ('thyroid carcinoma', 'Disease', (276, 293)) ('hyperparathyroidism', 'Disease', 'MESH:D006961', (227, 246)) ('caused by', 'Reg', (59, 68)) ('MTC', 'Phenotype', 'HP:0002865', (295, 298)) 54263 22584712 Furthermore, family members not harboring family-specific disease-associated mutations can be definitively advised that they only have the same risk as the general population of developing the component neoplasias of MEN 2, so could be excluded from lifelong clinical surveillance and prophylactic surgeries. ('neoplasia', 'Phenotype', 'HP:0002664', (203, 212)) ('neoplasias', 'Phenotype', 'HP:0002664', (203, 213)) ('neoplasias', 'Disease', 'MESH:D009369', (203, 213)) ('neoplasias', 'Disease', (203, 213)) ('mutations', 'Var', (77, 86)) ('MEN', 'Species', '9606', (217, 220)) 54266 22584712 MEN 2B is the most aggressive form caused by germline mutations in codon 918 (98%) or codon 883 (2%) and is associated with an age of onset for MTC in the first year of life. ('MTC', 'Phenotype', 'HP:0002865', (144, 147)) ('caused', 'Reg', (35, 41)) ('codon 883', 'Var', (86, 95)) ('codon', 'Gene', (67, 72)) ('MEN 2B', 'Gene', (0, 6)) ('germline mutations in', 'Var', (45, 66)) ('MEN 2B', 'Gene', '5979', (0, 6)) 54276 22584712 For instance, the variant IVS1-126G > T in a large family with the G533C mutation was associated with an early onset of disease. ('IVS1-126G > T', 'Mutation', 'c.IVS1-126G>T', (26, 39)) ('associated with', 'Reg', (86, 101)) ('IVS1-126G > T', 'Var', (26, 39)) ('G533C', 'Var', (67, 72)) ('G533C', 'Mutation', 'rs75873440', (67, 72)) 54288 22584712 Today, there is growing evidence that about 25-30% of all patients with pheochromocytoma and paraganglioma harbor a germline mutation. ('pheochromocytoma', 'Disease', (72, 88)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (72, 88)) ('paraganglioma', 'Disease', 'MESH:D010235', (93, 106)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (72, 88)) ('germline mutation', 'Var', (116, 133)) ('paraganglioma', 'Phenotype', 'HP:0002668', (93, 106)) ('paraganglioma', 'Disease', (93, 106)) ('patients', 'Species', '9606', (58, 66)) 54292 22584712 In patients with NF1 and pheochromocytoma there are no mutation hot spots, instead the alterations are spread all over the gene and include large deletions or rearrangements in about 10% of patients. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (25, 41)) ('patients', 'Species', '9606', (190, 198)) ('NF1', 'Gene', (17, 20)) ('rearrangements', 'Var', (159, 173)) ('patients', 'Species', '9606', (3, 11)) ('NF1', 'Gene', '4763', (17, 20)) ('pheochromocytoma', 'Disease', (25, 41)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (25, 41)) 54309 22584712 Cowden syndrome is caused by germline mutations of the PTEN tumor suppressor gene. ('PTEN', 'Gene', '5728', (55, 59)) ('caused by', 'Reg', (19, 28)) ('PTEN', 'Gene', (55, 59)) ('Cowden syndrome', 'Disease', 'MESH:D006223', (0, 15)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('Cowden syndrome', 'Disease', (0, 15)) ('tumor', 'Disease', (60, 65)) ('germline mutations', 'Var', (29, 47)) 54313 22584712 Gardner syndrome is caused by germline mutations in the APC gene and is characterized by gastrointestinal adenomatous polyps and a high risk of developing gastrointestinal and other cancers. ('gastrointestinal', 'Disease', 'MESH:D005767', (89, 105)) ('cancer', 'Phenotype', 'HP:0002664', (182, 188)) ('Gardner syndrome', 'Disease', (0, 16)) ('cancers', 'Disease', 'MESH:D009369', (182, 189)) ('gastrointestinal adenomatous polyps', 'Disease', (89, 124)) ('adenomatous polyps', 'Phenotype', 'HP:0005227', (106, 124)) ('gastrointestinal', 'Disease', 'MESH:D005767', (155, 171)) ('germline mutations', 'Var', (30, 48)) ('cancers', 'Phenotype', 'HP:0002664', (182, 189)) ('gastrointestinal adenomatous polyps', 'Disease', 'MESH:D018256', (89, 124)) ('gastrointestinal', 'Disease', (89, 105)) ('Gardner syndrome', 'Disease', 'MESH:D005736', (0, 16)) ('APC', 'Gene', (56, 59)) ('cancers', 'Disease', (182, 189)) ('gastrointestinal', 'Disease', (155, 171)) ('caused by', 'Reg', (20, 29)) ('APC', 'Gene', '324', (56, 59)) 54334 22584712 Therefore, for NMTC, it has been argued that heritability is most likely the main contributor to the high standardized incidence ratios and that familial aggregations of NMTC are most likely the result of germline mutations in susceptibility genes. ('MTC', 'Phenotype', 'HP:0002865', (171, 174)) ('result', 'Reg', (195, 201)) ('germline mutations', 'Var', (205, 223)) ('familial aggregation', 'Disease', 'MESH:D020914', (145, 165)) ('familial aggregation', 'Disease', (145, 165)) ('MTC', 'Phenotype', 'HP:0002865', (16, 19)) 54418 32376047 The importance of genetic changes in human tumors is well documented in publicly available resources such as The Cancer Genome Atlas database, where numerous genetic alterations, both germline and somatic, have been linked to prognosis, treatment response, and/or survival. ('linked', 'Reg', (216, 222)) ('Cancer', 'Phenotype', 'HP:0002664', (113, 119)) ('Cancer', 'Disease', (113, 119)) ('alterations', 'Var', (166, 177)) ('Cancer', 'Disease', 'MESH:D009369', (113, 119)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('genetic alterations', 'Var', (158, 177)) ('human', 'Species', '9606', (37, 42)) ('tumors', 'Disease', (43, 49)) ('tumors', 'Phenotype', 'HP:0002664', (43, 49)) ('tumors', 'Disease', 'MESH:D009369', (43, 49)) 54419 32376047 In this review, we focus on genetic testing for germline mutations in patients with endocrine surgical disorders. ('germline mutations', 'Var', (48, 66)) ('patients', 'Species', '9606', (70, 78)) ('endocrine surgical disorders', 'Disease', (84, 112)) ('endocrine surgical disorders', 'Disease', 'MESH:D004700', (84, 112)) 54420 32376047 Importantly, germline mutation testing has the potential to benefit (1) affected individuals by providing prognostic, risk of malignancy, and additional disease risk information and (2) at-risk family members through identification and exoneration of affected and unaffected individuals, respectively. ('malignancy', 'Disease', 'MESH:D009369', (126, 136)) ('germline mutation testing', 'Var', (13, 38)) ('malignancy', 'Disease', (126, 136)) 54421 32376047 Importantly, genetic testing allows for early diagnosis through screening and surveillance and gene-based treatments that are likely to reduce patient morbidity and mortality. ('genetic', 'Var', (13, 20)) ('mortality', 'Disease', 'MESH:D003643', (165, 174)) ('patient', 'Species', '9606', (143, 150)) ('gene-based treatments', 'Var', (95, 116)) ('mortality', 'Disease', (165, 174)) 54423 32376047 Here, we provide an up-to-date overview of genetic testing in endocrine diseases encountered by the endocrine surgeon and its impact on surgical management. ('endocrine diseases', 'Disease', (62, 80)) ('endocrine diseases', 'Disease', 'MESH:D004700', (62, 80)) ('genetic testing', 'Var', (43, 58)) 54433 32376047 For example, patients with HPT-JT syndrome owing to a germline CDC73 gene mutation have a high-risk of parathyroid cancer and multigland disease causing their PHPT. ('PHPT', 'Disease', (159, 163)) ('mutation', 'Var', (74, 82)) ('HPT-JT syndrome', 'Disease', 'MESH:C563273', (27, 42)) ('PHPT', 'Phenotype', 'HP:0008200', (159, 163)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (107, 121)) ('parathyroid cancer', 'Disease', 'MESH:D010282', (103, 121)) ('parathyroid cancer', 'Disease', (103, 121)) ('patients', 'Species', '9606', (13, 21)) ('multigland disease', 'Disease', 'MESH:D003141', (126, 144)) ('parathyroid cancer', 'Phenotype', 'HP:0006780', (103, 121)) ('cancer', 'Phenotype', 'HP:0002664', (115, 121)) ('HPT-JT syndrome', 'Disease', (27, 42)) ('multigland disease', 'Disease', (126, 144)) ('CDC73', 'Gene', (63, 68)) ('CDC73', 'Gene', '79577', (63, 68)) 54436 32376047 In patients with MEN1 mutation, a bilateral neck exploration with subtotal versus total parathyroidectomy (with autograft) and cervical thymectomy should be performed, because these patients may have parathyroid rests in the thymus that can cause recurrence, and they are at risk of thymic carcinoid. ('carcinoid', 'Phenotype', 'HP:0100570', (290, 299)) ('mutation', 'Var', (22, 30)) ('thymic carcinoid', 'Disease', (283, 299)) ('rests in the thymus', 'Phenotype', 'HP:0100521', (212, 231)) ('thymic carcinoid', 'Disease', 'MESH:D002276', (283, 299)) ('patients', 'Species', '9606', (3, 11)) ('patients', 'Species', '9606', (182, 190)) ('subtotal versus total parathyroidectomy', 'Disease', 'MESH:C567307', (66, 105)) ('MEN1', 'Gene', (17, 21)) ('subtotal versus total parathyroidectomy', 'Disease', (66, 105)) ('MEN1', 'Gene', '4221', (17, 21)) 54437 32376047 Patients with familial isolated PHPT owing to GCM2 mutations should also have a bilateral neck exploration and removal of all enlarged parathyroid glands, and, if all 4 parathyroid glands are involved, a subtotal parathyroidectomy should be performed. ('GCM2', 'Gene', '9247', (46, 50)) ('mutations', 'Var', (51, 60)) ('PHPT', 'Phenotype', 'HP:0008200', (32, 36)) ('enlarged parathyroid glands', 'Phenotype', 'HP:0008208', (126, 153)) ('GCM2', 'Gene', (46, 50)) ('Patients', 'Species', '9606', (0, 8)) ('familial isolated PHPT', 'Disease', (14, 36)) 54451 32376047 Owing to the high-risk of thyroid cancer in these patients, screening ultrasound for thyroid cancer should be performed in all at-risk individuals with a germline mutation. ('cancer', 'Phenotype', 'HP:0002664', (34, 40)) ('patients', 'Species', '9606', (50, 58)) ('germline', 'Var', (154, 162)) ('cancer', 'Phenotype', 'HP:0002664', (93, 99)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (26, 40)) ('thyroid cancer', 'Disease', (26, 40)) ('thyroid cancer', 'Disease', (85, 99)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (85, 99)) ('thyroid cancer', 'Disease', 'MESH:D013964', (26, 40)) ('thyroid cancer', 'Disease', 'MESH:D013964', (85, 99)) 54457 32376047 The MEN2 syndrome has an autosomal dominant pattern of inheritance and is owing to germline mutations in the RET proto-oncogene. ('RET', 'Gene', (109, 112)) ('MEN2 syndrome', 'Disease', (4, 17)) ('RET', 'Gene', '5979', (109, 112)) ('mutations', 'Var', (92, 101)) 54462 32376047 Prophylactic and/or early thyroidectomy is the only curative option for patients with MTC who test positive for a RET mutation, but who have no clinical evidence of disease (normal calcitonin and thyroid ultrasound). ('MTC', 'Phenotype', 'HP:0002865', (86, 89)) ('RET', 'Gene', '5979', (114, 117)) ('mutation', 'Var', (118, 126)) ('RET', 'Gene', (114, 117)) ('patients', 'Species', '9606', (72, 80)) 54463 32376047 Due to the high risk of developing MTC over their lifetime (>90%), prophylactic thyroidectomy is recommended for all patients who are carriers of the RET mutation. ('RET', 'Gene', (150, 153)) ('MTC', 'Phenotype', 'HP:0002865', (35, 38)) ('mutation', 'Var', (154, 162)) ('RET', 'Gene', '5979', (150, 153)) ('carriers', 'Reg', (134, 142)) ('patients', 'Species', '9606', (117, 125)) 54467 32376047 Furthermore, because of the high risk of tumor multifocality in patients harboring the RET mutation, total thyroidectomy is recommended. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('mutation', 'Var', (91, 99)) ('patients', 'Species', '9606', (64, 72)) ('tumor', 'Disease', (41, 46)) ('RET', 'Gene', '5979', (87, 90)) ('RET', 'Gene', (87, 90)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) 54471 32376047 PPGL represents the most heritable tumor in humans, with up to 50% of PPGL occurring as a result of germline mutation in a susceptibility gene. ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('result of', 'Reg', (90, 99)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('humans', 'Species', '9606', (44, 50)) ('tumor', 'Disease', (35, 40)) ('PPGL', 'Disease', (0, 4)) ('PPGL', 'Disease', (70, 74)) ('germline mutation', 'Var', (100, 117)) 54472 32376047 Furthermore, prior studies have shown that up to 27% of patients with apparently sporadic disease harbor a PPGL-related germline mutation. ('patients', 'Species', '9606', (56, 64)) ('sporadic disease', 'Disease', 'MESH:D003141', (81, 97)) ('PPGL-related', 'Gene', (107, 119)) ('germline', 'Var', (120, 128)) ('sporadic disease', 'Disease', (81, 97)) 54475 32376047 For example, patients with PPGL and a mutation in NF1, RET, or VHL have a low risk of metastatic disease, and as such may be good candidates for laparoscopic and/or partial adrenalectomy, especially if the tumor is small (<2-3 cm), and there is no family history of metastatic disease. ('tumor', 'Phenotype', 'HP:0002664', (206, 211)) ('PPGL', 'Gene', (27, 31)) ('RET', 'Gene', '5979', (55, 58)) ('NF1', 'Gene', (50, 53)) ('tumor', 'Disease', (206, 211)) ('patients', 'Species', '9606', (13, 21)) ('NF1', 'Gene', '4763', (50, 53)) ('RET', 'Gene', (55, 58)) ('VHL', 'Gene', '7428', (63, 66)) ('VHL', 'Gene', (63, 66)) ('mutation', 'Var', (38, 46)) ('metastatic disease', 'CPA', (86, 104)) ('tumor', 'Disease', 'MESH:D009369', (206, 211)) 54476 32376047 Conversely, patients with a mutation in SDHB, FH, or MAX and a large primary tumor have a higher risk of metastatic disease and may require open and total adrenalectomy. ('SDHB', 'Gene', '6390', (40, 44)) ('metastatic disease', 'CPA', (105, 123)) ('patients', 'Species', '9606', (12, 20)) ('SDHB', 'Gene', (40, 44)) ('tumor', 'Disease', 'MESH:D009369', (77, 82)) ('mutation', 'Var', (28, 36)) ('tumor', 'Phenotype', 'HP:0002664', (77, 82)) ('tumor', 'Disease', (77, 82)) ('FH', 'Disease', 'MESH:D006938', (46, 48)) 54482 32376047 However, the risk of metastatic/malignant disease in inherited PNETs as compared with sporadic PNETs by tumor size is different. ('malignant disease', 'Disease', 'MESH:D009369', (32, 49)) ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('NETs', 'Phenotype', 'HP:0100634', (64, 68)) ('malignant disease', 'Disease', (32, 49)) ('tumor', 'Disease', (104, 109)) ('inherited', 'Var', (53, 62)) ('NETs', 'Phenotype', 'HP:0100634', (96, 100)) ('PNETs', 'Disease', (63, 68)) ('tumor', 'Disease', 'MESH:D009369', (104, 109)) 54484 32376047 Recently, Tirosh et al demonstrated that patients with VHL-associated PNETs who had a missense mutation or any mutation type of the VHL gene in exon 3 were more likely to undergo surgical intervention (had tumor growth or developed metastatic disease) at a higher rate compared with patients with other mutation types. ('VHL', 'Gene', (132, 135)) ('PNETs', 'Disease', (70, 75)) ('tumor', 'Phenotype', 'HP:0002664', (206, 211)) ('undergo', 'Reg', (171, 178)) ('surgical intervention', 'CPA', (179, 200)) ('VHL', 'Gene', '7428', (132, 135)) ('patients', 'Species', '9606', (283, 291)) ('missense mutation', 'Var', (86, 103)) ('NETs', 'Phenotype', 'HP:0100634', (71, 75)) ('patients', 'Species', '9606', (41, 49)) ('VHL', 'Gene', (55, 58)) ('tumor growth', 'Disease', (206, 218)) ('VHL', 'Gene', '7428', (55, 58)) ('tumor growth', 'Disease', 'MESH:D006130', (206, 218)) 54485 32376047 Furthermore, in silico computational analysis of the germline missense VHL mutations showed those that had >80% prediction for disease-causing mutations had aggressive tumors. ('tumors', 'Phenotype', 'HP:0002664', (168, 174)) ('VHL', 'Gene', (71, 74)) ('aggressive tumors', 'Disease', 'MESH:D001523', (157, 174)) ('VHL', 'Gene', '7428', (71, 74)) ('mutations', 'Var', (75, 84)) ('aggressive tumors', 'Disease', (157, 174)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) 54487 32376047 Christakis et al observed that patients with MEN1 mutations in exon 2 had a higher rate of PNETs and distant metastasis as compared with patients with MEN1 mutations in exons 3-10. ('MEN1', 'Gene', (45, 49)) ('MEN1', 'Gene', (151, 155)) ('MEN1', 'Gene', '4221', (45, 49)) ('MEN1', 'Gene', '4221', (151, 155)) ('NETs', 'Phenotype', 'HP:0100634', (92, 96)) ('mutations', 'Var', (50, 59)) ('patients', 'Species', '9606', (137, 145)) ('patients', 'Species', '9606', (31, 39)) 54488 32376047 MEN1 missense germline mutations have also been associated with PNET progression as compared with nonsense and frameshift mutations. ('MEN1', 'Gene', '4221', (0, 4)) ('missense germline', 'Var', (5, 22)) ('associated', 'Reg', (48, 58)) ('PNET progression', 'Disease', (64, 80)) ('MEN1', 'Gene', (0, 4)) 54491 32376047 In fact, genetic testing in patients with MEN1 has been shown to identify patients with the mutation on an average of 10 years earlier, before development of any clinical symptoms of the disease. ('mutation', 'Var', (92, 100)) ('MEN1', 'Gene', (42, 46)) ('MEN1', 'Gene', '4221', (42, 46)) ('patients', 'Species', '9606', (74, 82)) ('patients', 'Species', '9606', (28, 36)) 54566 30607140 Despite the fact that tremendous somatic mutations in a variety of cancer types can give chances for personalized treatment targeting at patients' specific mutations, these mutations can eventually translate into new antigens for possible anti-tumor immune response. ('mutations', 'Var', (41, 50)) ('cancer', 'Disease', 'MESH:D009369', (67, 73)) ('tumor', 'Phenotype', 'HP:0002664', (244, 249)) ('translate', 'Reg', (198, 207)) ('cancer', 'Disease', (67, 73)) ('tumor', 'Disease', (244, 249)) ('mutations', 'Var', (156, 165)) ('patients', 'Species', '9606', (137, 145)) ('mutations', 'Var', (173, 182)) ('cancer', 'Phenotype', 'HP:0002664', (67, 73)) ('tumor', 'Disease', 'MESH:D009369', (244, 249)) 54572 30607140 Thus, monoclonal antibodies blocking PD-1 have arisen as an impressive treatment strategy for cancer patients and have been approved by the U.S. Food and Drug Administration (FDA) for human use. ('patients', 'Species', '9606', (101, 109)) ('cancer', 'Phenotype', 'HP:0002664', (94, 100)) ('human', 'Species', '9606', (184, 189)) ('monoclonal', 'Var', (6, 16)) ('PD-1', 'Gene', (37, 41)) ('cancer', 'Disease', (94, 100)) ('cancer', 'Disease', 'MESH:D009369', (94, 100)) 54641 30607140 The combination of PD-1 and CTLA-4 blockade has demonstrated higher response rates in advanced melanoma, while combination with LAG3 blockade are still carrying on clinical trials (NCT03250832, NCT02658981, NCT01968109, NCT03005782). ('advanced melanoma', 'Disease', 'MESH:D008545', (86, 103)) ('LAG3', 'Gene', '3902', (128, 132)) ('higher', 'PosReg', (61, 67)) ('melanoma', 'Phenotype', 'HP:0002861', (95, 103)) ('advanced melanoma', 'Disease', (86, 103)) ('NCT03250832', 'Var', (181, 192)) ('CTLA-4', 'Gene', '1493', (28, 34)) ('PD-1', 'Gene', (19, 23)) ('LAG3', 'Gene', (128, 132)) ('CTLA-4', 'Gene', (28, 34)) 54645 30607140 Therefore, we can infer that the high expression of LFA-1 may improve the efficacy of T cells that have been released from the "brake" of PD-1 by PD-1 blockade. ('LFA-1', 'Gene', (52, 57)) ('high expression', 'Var', (33, 48)) ('improve', 'PosReg', (62, 69)) ('efficacy', 'CPA', (74, 82)) ('LFA-1', 'Gene', '3689', (52, 57)) 54714 29956810 The patients were principally divided into 3 groups on the basis of BMI: Underweight (<18.5 kg/m2), normal (>=18.5 to <25.0 kg/m2) and high (>=25.0 kg/m2). ('>=18.5 to <25.0', 'Var', (108, 123)) ('<18.5 kg/m2', 'Var', (86, 97)) ('patients', 'Species', '9606', (4, 12)) 54715 29956810 The high group included two sub-groups: Overweight (>=25 to <30 kg/m2) and obese (>=30 kg/m2). ('obese', 'Disease', 'MESH:D009765', (75, 80)) ('Overweight', 'Phenotype', 'HP:0025502', (40, 50)) ('>=30 kg/m2', 'Var', (82, 92)) ('obese', 'Disease', (75, 80)) ('>=25', 'Var', (52, 56)) 54753 29956810 The result suggested that high BMI (>=25) was a high risk factor for cancer in the gallbladder, rectum, kidney and uterus. ('cancer', 'Disease', 'MESH:D009369', (69, 75)) ('cancer', 'Disease', (69, 75)) ('cancer', 'Phenotype', 'HP:0002664', (69, 75)) ('high', 'Var', (26, 30)) 54792 29956810 We identified a positive correlation between a high BMI and the corresponding two/five-year survival rate in cancer samples (r=0.53, Spearman correlation coefficient, Figs. ('BMI', 'MPA', (52, 55)) ('cancer', 'Disease', 'MESH:D009369', (109, 115)) ('high', 'Var', (47, 51)) ('cancer', 'Disease', (109, 115)) ('two/five-year survival rate', 'CPA', (78, 105)) ('cancer', 'Phenotype', 'HP:0002664', (109, 115)) 54806 29956810 For example, high levels of testosterone, and estrogen and progesterone are risk factors for prostate cancer and breast cancer, respectively. ('cancer', 'Phenotype', 'HP:0002664', (120, 126)) ('prostate cancer', 'Disease', (93, 108)) ('breast cancer', 'Disease', 'MESH:D001943', (113, 126)) ('risk factors', 'Reg', (76, 88)) ('cancer', 'Phenotype', 'HP:0002664', (102, 108)) ('high', 'Var', (13, 17)) ('breast cancer', 'Disease', (113, 126)) ('breast cancer', 'Phenotype', 'HP:0003002', (113, 126)) ('testosterone', 'Chemical', 'MESH:D013739', (28, 40)) ('prostate cancer', 'Disease', 'MESH:D011471', (93, 108)) ('prostate cancer', 'Phenotype', 'HP:0012125', (93, 108)) 54816 29956810 Patients with a low BMI (<18.5) had a reduced incidence for all 38 types of cancer. ('low BMI', 'Phenotype', 'HP:0045082', (16, 23)) ('reduced', 'NegReg', (38, 45)) ('cancer', 'Phenotype', 'HP:0002664', (76, 82)) ('Patients', 'Species', '9606', (0, 8)) ('<18.5', 'Var', (25, 30)) ('cancer', 'Disease', (76, 82)) ('cancer', 'Disease', 'MESH:D009369', (76, 82)) 54869 26113602 In humans, PCC is a rare tumor of which ~25% of cases are associated with germline mutations, commonly in subunits of succinate dehydrogenase (SDH), which is part of mitochondrial complex II. ('mutations', 'Var', (83, 92)) ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('associated', 'Reg', (58, 68)) ('tumor', 'Disease', (25, 30)) ('x', 'Chemical', 'MESH:D000082', (186, 187)) ('succinate dehydrogenase', 'Gene', '6390', (118, 141)) ('humans', 'Species', '9606', (3, 9)) ('PCC', 'Phenotype', 'HP:0002666', (11, 14)) ('succinate dehydrogenase', 'Gene', (118, 141)) ('PCC', 'Disease', (11, 14)) ('tumor', 'Disease', 'MESH:D009369', (25, 30)) 54939 26113602 Mutations in VHL and SDH result in accumulation of succinate which directly inhibits prolyl hydroxylase (PHD), thereby inducing Hif-1alpha accumulation; Hif-1alpha causes PCC tumorogenesis by increasing angiogenesis, proliferation, invasion and metastasis. ('succinate', 'Chemical', 'MESH:D019802', (51, 60)) ('PCC tumorogenesis', 'Disease', (171, 188)) ('inducing', 'Reg', (119, 127)) ('PHD', 'Disease', (105, 108)) ('VHL', 'Disease', 'MESH:D006623', (13, 16)) ('x', 'Chemical', 'MESH:D000082', (97, 98)) ('Mutations', 'Var', (0, 9)) ('Hif-1alpha', 'Gene', '15251', (153, 163)) ('PCC tumorogenesis', 'Disease', 'OMIM:115700', (171, 188)) ('Hif-1alpha', 'Gene', (153, 163)) ('PHD', 'Disease', 'MESH:D011547', (105, 108)) ('causes', 'Reg', (164, 170)) ('inhibits', 'NegReg', (76, 84)) ('Hif-1alpha', 'Gene', '15251', (128, 138)) ('Hif-1alpha', 'Gene', (128, 138)) ('VHL', 'Disease', (13, 16)) ('increasing', 'PosReg', (192, 202)) ('SDH', 'Gene', (21, 24)) ('PCC', 'Phenotype', 'HP:0002666', (171, 174)) ('tumor', 'Phenotype', 'HP:0002664', (175, 180)) ('angiogenesis', 'CPA', (203, 215)) 54940 26113602 Mutations in the RET proto-oncogene and in NF1 activate RAS/RAF/MAPK and PI3K/Akt/mTOR signaling pathways, which play critical roles in tumorogenesis. ('activate', 'PosReg', (47, 55)) ('NF1', 'Gene', (43, 46)) ('Akt', 'Gene', '11651', (78, 81)) ('tumor', 'Disease', 'MESH:D009369', (136, 141)) ('Mutations', 'Var', (0, 9)) ('mTOR', 'Gene', (82, 86)) ('RAF', 'Gene', (60, 63)) ('Akt', 'Gene', (78, 81)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('RAF', 'Gene', '387609', (60, 63)) ('mTOR', 'Gene', '56717', (82, 86)) ('tumor', 'Disease', (136, 141)) 54945 26113602 For instance, C16-ceramide and sphinganine both directly inhibit complex IV activity in the liver, which results in oxidative stress. ('C16-ceramide', 'Var', (14, 26)) ('oxidative stress', 'Phenotype', 'HP:0025464', (116, 132)) ('complex IV activity', 'MPA', (65, 84)) ('x', 'Chemical', 'MESH:D000082', (117, 118)) ('inhibit', 'NegReg', (57, 64)) ('results in', 'Reg', (105, 115)) ('C16-ceramide', 'Chemical', 'MESH:C097760', (14, 26)) ('oxidative stress', 'MPA', (116, 132)) ('sphinganine', 'Chemical', 'MESH:C005682', (31, 42)) ('x', 'Chemical', 'MESH:D000082', (71, 72)) 54949 26113602 Thus, the CerS2 null mouse provides additional indications that oxidative stress is a key player in PCC formation, although the mechanism of oxidative stress is somewhat different inasmuch as SDH function was normal, the Hif-1alpha protein was not upregulated, and Akt and mTOR phosphorylation was not detected in the PCC (data not shown); moreover, ceroid accumulation is not observed in PCC caused by SDH mutations, suggesting that the mechanism of PCC formation differs between SDH mutations and that observed in the CerS null mouse. ('oxidative stress', 'Phenotype', 'HP:0025464', (64, 80)) ('mTOR', 'Gene', (273, 277)) ('PCC', 'Phenotype', 'HP:0002666', (389, 392)) ('mutations', 'Var', (485, 494)) ('mouse', 'Species', '10090', (530, 535)) ('PCC', 'Phenotype', 'HP:0002666', (318, 321)) ('oxidative stress', 'Phenotype', 'HP:0025464', (141, 157)) ('ceroid', 'Chemical', 'MESH:D002566', (350, 356)) ('Akt', 'Gene', (265, 268)) ('mouse', 'Species', '10090', (21, 26)) ('PCC', 'Phenotype', 'HP:0002666', (451, 454)) ('x', 'Chemical', 'MESH:D000082', (142, 143)) ('x', 'Chemical', 'MESH:D000082', (65, 66)) ('Akt', 'Gene', '11651', (265, 268)) ('mTOR', 'Gene', '56717', (273, 277)) ('PCC', 'Phenotype', 'HP:0002666', (100, 103)) ('SDH', 'Gene', (481, 484)) ('Hif-1alpha', 'Gene', '15251', (221, 231)) ('Hif-1alpha', 'Gene', (221, 231)) 54952 26113602 There is one report of a human patient with a mutation in CerS2, in which a 27 kb de novo deletion in one allele of chromosome 1q21 was detected, although there is no evidence that this patient displays either mitochondrial dysfunction or PCC. ('mitochondrial dysfunction', 'Disease', 'MESH:D028361', (210, 235)) ('deletion', 'Var', (90, 98)) ('CerS2', 'Gene', (58, 63)) ('mitochondrial dysfunction', 'Disease', (210, 235)) ('mitochondrial dysfunction', 'Phenotype', 'HP:0003287', (210, 235)) ('human', 'Species', '9606', (25, 30)) ('PCC', 'Phenotype', 'HP:0002666', (239, 242)) ('patient', 'Species', '9606', (31, 38)) ('mutation', 'Var', (46, 54)) ('patient', 'Species', '9606', (186, 193)) 54953 26113602 There is, however, a relationship between altered CerS expression and cancer. ('altered', 'Var', (42, 49)) ('cancer', 'Phenotype', 'HP:0002664', (70, 76)) ('x', 'Chemical', 'MESH:D000082', (56, 57)) ('cancer', 'Disease', (70, 76)) ('cancer', 'Disease', 'MESH:D009369', (70, 76)) ('CerS', 'Protein', (50, 54)) 55036 28641581 Beta blockade before alpha blockade is definitely contraindicated in the setting of pheochromocytoma, and will itself lead to challenges in the cardiovascular management because of unopposed alpha stimulation. ('lead to', 'Reg', (118, 125)) ('Beta', 'Var', (0, 4)) ('pheochromocytoma', 'Disease', (84, 100)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (84, 100)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (84, 100)) ('man', 'Species', '9606', (159, 162)) ('alpha stimulation', 'MPA', (191, 208)) 55071 22566196 External Beam Radiation Therapy (EBRT) for Patients with Malignant Pheochromocytoma and Non-Head and Neck Paraganglioma: Combination with 131I-MIBG In patients with malignant pheochromocytoma and paraganglioma, 131I-MIBG radiotherapy can achieve an objective response rate of 30-50% with the dose limiting toxicity being hematologic. ('paraganglioma', 'Disease', 'MESH:D010235', (196, 209)) ('131I-MIBG', 'Var', (211, 220)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (165, 191)) ('malignant pheochromocytoma', 'Disease', (165, 191)) ('Patients', 'Species', '9606', (43, 51)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (138, 147)) ('patients', 'Species', '9606', (151, 159)) ('paraganglioma', 'Phenotype', 'HP:0002668', (196, 209)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (67, 83)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (175, 191)) ('paraganglioma', 'Disease', (196, 209)) ('toxicity', 'Disease', 'MESH:D064420', (306, 314)) ('toxicity', 'Disease', (306, 314)) ('Malignant Pheochromocytoma and Non-Head and Neck Paraganglioma', 'Disease', 'MESH:D010673', (57, 119)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (106, 119)) ('Head and Neck Paraganglioma', 'Phenotype', 'HP:0002864', (92, 119)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (211, 220)) 55076 22566196 Due to widespread systemic metastases with areas of bulky, symptomatic tumor, five of the 17 patients were treated with sequential 131I-MIBG (2 mCi/kg per treatment) and external beam radiotherapy to nine sites. ('metastases', 'Disease', 'MESH:D009362', (27, 37)) ('tumor', 'Disease', 'MESH:D009369', (71, 76)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (131, 140)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('metastases', 'Disease', (27, 37)) ('tumor', 'Disease', (71, 76)) ('patients', 'Species', '9606', (93, 101)) ('131I-MIBG', 'Var', (131, 140)) 55081 22566196 PCC/PGL are often benign, but are associated with high morbidity secondary to mass effect and increased levels of circulating catecholamines which can lead to severe hypertension, stroke, and even death. ('hypertension', 'Phenotype', 'HP:0000822', (166, 178)) ('death', 'Disease', 'MESH:D003643', (197, 202)) ('PCC/PGL', 'Var', (0, 7)) ('death', 'Disease', (197, 202)) ('catecholamines', 'Chemical', 'MESH:D002395', (126, 140)) ('increased', 'PosReg', (94, 103)) ('stroke', 'Phenotype', 'HP:0001297', (180, 186)) ('PGL', 'Phenotype', 'HP:0002668', (4, 7)) ('increased levels of circulating catecholamines', 'Phenotype', 'HP:0003334', (94, 140)) ('lead to', 'Reg', (151, 158)) ('levels of circulating catecholamines', 'MPA', (104, 140)) ('hypertension', 'Disease', 'MESH:D006973', (166, 178)) ('PCC', 'Phenotype', 'HP:0002666', (0, 3)) ('stroke', 'Disease', (180, 186)) ('hypertension', 'Disease', (166, 178)) ('stroke', 'Disease', 'MESH:D020521', (180, 186)) 55106 22566196 Response evaluation criteria in solid tumors (RECIST) v1.1 was used to define disease progression or stability in the subset of five patients treated with combined 131I-MIBG and EBRT. ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('solid tumors', 'Disease', 'MESH:D009369', (32, 44)) ('tumors', 'Phenotype', 'HP:0002664', (38, 44)) ('patients', 'Species', '9606', (133, 141)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (164, 173)) ('131I-MIBG', 'Var', (164, 173)) ('EBRT', 'Chemical', '-', (178, 182)) ('solid tumors', 'Disease', (32, 44)) 55112 22566196 Three of the five patients had genetic testing for mutations in one of the known PCC/PGL susceptibility genes, which was performed in a CLIA approved laboratory as part of routine clinical care. ('PGL', 'Phenotype', 'HP:0002668', (85, 88)) ('mutations', 'Var', (51, 60)) ('PCC/PGL', 'Gene', (81, 88)) ('PCC', 'Phenotype', 'HP:0002666', (81, 84)) ('patients', 'Species', '9606', (18, 26)) 55139 22566196 Since the dose limiting toxicity of 131I-MIBG is bone marrow suppression and the dose limiting toxicity of EBRT is peri-tumoral normal tissue damage, these non-overlapping toxicities can allow a higher dose of radiation to tumor tissue with a lower level of toxicity. ('toxicities', 'Disease', (172, 182)) ('tumor', 'Phenotype', 'HP:0002664', (223, 228)) ('toxicity', 'Disease', 'MESH:D064420', (24, 32)) ('toxicity', 'Disease', (95, 103)) ('higher', 'PosReg', (195, 201)) ('toxicity', 'Disease', (24, 32)) ('EBRT', 'Chemical', '-', (107, 111)) ('tumor', 'Disease', (120, 125)) ('bone marrow suppression', 'Phenotype', 'HP:0005528', (49, 72)) ('tumor', 'Disease', (223, 228)) ('toxicity', 'Disease', 'MESH:D064420', (258, 266)) ('tumor', 'Disease', 'MESH:D009369', (120, 125)) ('tumor', 'Disease', 'MESH:D009369', (223, 228)) ('bone marrow suppression', 'CPA', (49, 72)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (36, 45)) ('131I-MIBG', 'Var', (36, 45)) ('toxicity', 'Disease', (258, 266)) ('toxicities', 'Disease', 'MESH:D064420', (172, 182)) ('tumor', 'Phenotype', 'HP:0002664', (120, 125)) ('toxicity', 'Disease', 'MESH:D064420', (95, 103)) 55146 22566196 In addition, while this is the first study to our knowledge that uses the RECIST v1.1 criteria to assess tumor control, we only were able to apply these criteria to the subset of five patients treated with combined EBRT and 131I-MIBG based on availability of follow up imaging in our retrospective review. ('patients', 'Species', '9606', (184, 192)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (224, 233)) ('tumor', 'Disease', 'MESH:D009369', (105, 110)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('131I-MIBG', 'Var', (224, 233)) ('EBRT', 'Var', (215, 219)) ('tumor', 'Disease', (105, 110)) ('EBRT', 'Chemical', '-', (215, 219)) 55151 22566196 The high rate of local control for bulky metastases that was achieved in our current patient cohort, despite eventual systemic progression, suggests that combining 131I-MIBG with EBRT can be safely performed due to non-overlapping toxicities and can achieve excellent control of locally bulky tumors. ('patient', 'Species', '9606', (85, 92)) ('tumors', 'Phenotype', 'HP:0002664', (293, 299)) ('metastases', 'Disease', 'MESH:D009362', (41, 51)) ('tumor', 'Phenotype', 'HP:0002664', (293, 298)) ('EBRT', 'Chemical', '-', (179, 183)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (164, 173)) ('tumors', 'Disease', 'MESH:D009369', (293, 299)) ('131I-MIBG', 'Var', (164, 173)) ('toxicities', 'Disease', (231, 241)) ('tumors', 'Disease', (293, 299)) ('metastases', 'Disease', (41, 51)) ('toxicities', 'Disease', 'MESH:D064420', (231, 241)) 55152 22566196 These data are being used to develop a prospective protocol for multi-modality management of malignant PCC/PGL that includes combined 131I-MIBG with EBRT. ('EBRT', 'Chemical', '-', (149, 153)) ('PCC', 'Phenotype', 'HP:0002666', (103, 106)) ('131I-MIBG', 'Var', (134, 143)) ('malignant PCC/PGL', 'Disease', (93, 110)) ('PGL', 'Phenotype', 'HP:0002668', (107, 110)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (134, 143)) 55175 24939623 However, some studies suggest that selective blockade with its improved side effect profile and wider availability can control blood pressure perioperatively as effectively as PXB and avoid prolonged postoperative hypotension. ('hypotension', 'Disease', 'MESH:D007022', (214, 225)) ('avoid prolonged postoperative hypotension', 'Phenotype', 'HP:0001278', (184, 225)) ('PXB', 'Chemical', 'MESH:D010643', (176, 179)) ('hypotension', 'Disease', (214, 225)) ('control blood pressure', 'MPA', (119, 141)) ('hypotension', 'Phenotype', 'HP:0002615', (214, 225)) ('selective', 'Var', (35, 44)) 55302 23087853 In many patients with pheochromocytoma, especially in those with extra-adrenal pheochromocytoma, adrenal pheochromocytoma larger than 5 cm, or mutations of genes encoding mainly subunits B and D of the mitochondrial enzyme succinate dehydrogenase [SDHB and SDHD], the possibility of metastatic disease or multiple tumors should be considered. ('SDHB', 'Gene', (248, 252)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (97, 121)) ('pheochromocytoma', 'Disease', (22, 38)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (71, 95)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (22, 38)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (97, 121)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (71, 95)) ('adrenal pheochromocytoma', 'Disease', (97, 121)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (105, 121)) ('tumors', 'Phenotype', 'HP:0002664', (314, 320)) ('multiple tumors', 'Disease', 'MESH:D009369', (305, 320)) ('mutations', 'Var', (143, 152)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (79, 95)) ('pheochromocytoma', 'Disease', (105, 121)) ('tumor', 'Phenotype', 'HP:0002664', (314, 319)) ('extra-adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (65, 95)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (105, 121)) ('SDHD', 'Gene', '6392', (257, 261)) ('SDHB', 'Gene', '6390', (248, 252)) ('patients', 'Species', '9606', (8, 16)) ('extra-adrenal pheochromocytoma', 'Disease', (65, 95)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (79, 95)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (22, 38)) ('SDHD', 'Gene', (257, 261)) ('extra-adrenal pheochromocytoma', 'Phenotype', 'HP:0006737', (65, 95)) ('pheochromocytoma', 'Disease', (79, 95)) ('multiple tumors', 'Disease', (305, 320)) 55310 23087853 Scintigraphy imaging with I-123 MIBG, compared with I-131 MIBG, is advantageous because of its optimal delta-emissions and lack of ss-particles that result in a lower absorbed dose. ('delta-emissions', 'MPA', (103, 118)) ('absorbed dose', 'MPA', (167, 180)) ('MIBG', 'Var', (32, 36)) ('I-131 MIBG', 'Chemical', 'MESH:D019797', (52, 62)) ('I-123 MIBG', 'Var', (26, 36)) ('I-123 MIBG', 'Chemical', '-', (26, 36)) 55311 23087853 Importantly, the normal adrenal medullary may show physiological uptake of both I-131and I-123 MIBG. ('I-131and', 'Chemical', '-', (80, 88)) ('I-131and', 'Var', (80, 88)) ('I-123', 'Var', (89, 94)) ('I-123 MIBG', 'Chemical', '-', (89, 99)) 55315 23087853 SPECT with I-123MIBG improves the identification of lesions in case of lesions with limited uptake or those with central necrosis. ('I-123MIBG', 'Chemical', '-', (11, 20)) ('necrosis', 'Disease', (121, 129)) ('improves', 'PosReg', (21, 29)) ('necrosis', 'Disease', 'MESH:D009336', (121, 129)) ('I-123MIBG', 'Var', (11, 20)) 55398 23087853 I123/I131-MIBG with or without SPECT-CT is routinely employed for imaging pheochromocytomas. ('MIBG', 'Chemical', 'MESH:D019797', (10, 14)) ('I123/I131-MIBG', 'Var', (0, 14)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (74, 91)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (74, 90)) ('pheochromocytomas', 'Disease', (74, 91)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (74, 91)) 55507 33822312 1 Robert Graves Institute, Tallaght University Hospital, D24.2 Department of Chemical Pathology, Tallaght University Hospital, D24.3 Diabetes Complications Research Centre, School of Medicine, UCD, D4. ('D24.3', 'Var', (127, 132)) ('Diabetes', 'Disease', 'MESH:D003920', (133, 141)) ('men', 'Species', '9606', (69, 72)) ('Diabetes', 'Disease', (133, 141)) 55544 33822312 Conclusion: Using comprehensive in-vivo techniques we have demonstrated significant abnormalities in glucocorticoid metabolism in patients with AI driven by dysregulation in the pre-receptor enzyme activity controlling tissue-specific GC availability, which can be improved following treatment with DR-HC. ('DR-HC', 'Chemical', '-', (299, 304)) ('met', 'Gene', (116, 119)) ('abnormalities', 'Reg', (84, 97)) ('dysregulation', 'Var', (157, 170)) ('men', 'Species', '9606', (289, 292)) ('patients', 'Species', '9606', (130, 138)) ('met', 'Gene', '79811', (116, 119)) 55661 33822312 More severe atherosclerosis in T1DM is associated with a phenotype of central adiposity, higher VLDL, chylomicron and LDL particles, hypertrigyceridaemia and low HDL-C. ('VLDL', 'MPA', (96, 100)) ('central adiposity', 'MPA', (70, 87)) ('atherosclerosis', 'Disease', (12, 27)) ('low HDL', 'Phenotype', 'HP:0003233', (158, 165)) ('higher', 'PosReg', (89, 95)) ('chylomicron', 'MPA', (102, 113)) ('low', 'Var', (158, 161)) ('DM', 'Disease', 'MESH:D009223', (33, 35)) ('hypertrigyceridaemia', 'Disease', (133, 153)) ('atherosclerosis', 'Disease', 'MESH:D050197', (12, 27)) ('atherosclerosis', 'Phenotype', 'HP:0002621', (12, 27)) 55683 33822312 A diagnosis of Graves' hyperthyroidism was made (TSH < 0.004 mIU/L (0.4-4.5), FT4 60 pmol/L (9-23), FT3 > 46.1 pmol/L (2.3-5.5), TSH receptor antibody 19.0 IU/L (< 1.8)). ('TSH', 'Chemical', 'MESH:D013972', (49, 52)) ('< 0.004 mIU/L', 'Var', (53, 66)) ('hyperthyroidism', 'Disease', 'MESH:D006980', (23, 38)) ('TSH', 'Chemical', 'MESH:D013972', (129, 132)) ('TSH receptor', 'Gene', '7253', (129, 141)) ('FT4', 'Chemical', '-', (78, 81)) ('TSH receptor', 'Gene', (129, 141)) ('FT3 >', 'Var', (100, 105)) ('hyperthyroidism', 'Phenotype', 'HP:0000836', (23, 38)) ('T3', 'Chemical', 'MESH:D014284', (101, 103)) ('hyperthyroidism', 'Disease', (23, 38)) 55726 33822312 ALB gene sequencing revealed a heterozygous Arg242His mutation confirming a diagnosis of FDH. ('FD', 'Disease', 'MESH:D004402', (89, 91)) ('Arg242His', 'Var', (44, 53)) ('ALB', 'Gene', (0, 3)) ('ALB', 'Gene', '213', (0, 3)) 55727 33822312 Familial Dysalbuminaemic Hyperthyroxinaemia (FDH) is an autosomal dominant condition, characterized by abnormal circulating albumin with increased T4 affinity, causing artefactual elevation of FT4 concentrations in euthyroid individuals. ('FT4 concentrations', 'MPA', (193, 211)) ('T4 affinity', 'Protein', (147, 158)) ('Dysalbuminaemic Hyperthyroxinaemia', 'Phenotype', 'HP:0008247', (9, 43)) ('FD', 'Disease', 'MESH:D004402', (45, 47)) ('Familial Dysalbuminaemic Hyperthyroxinaemia', 'Disease', 'MESH:D020936', (0, 43)) ('abnormal', 'Var', (103, 111)) ('Familial Dysalbuminaemic Hyperthyroxinaemia', 'Disease', (0, 43)) ('increased', 'PosReg', (137, 146)) ('elevation', 'PosReg', (180, 189)) ('FT4', 'Chemical', '-', (193, 196)) 55818 33822312 Mean pre-operative inpatient duration was 6 days during which alpha-blockade was achieved with Phenoxybenzamine (mean-daily-dose 1.5mg/kg/day), and volume expansion with intravenous fluids (mean-daily-volume 3L). ('alpha-blockade', 'MPA', (62, 76)) ('Phenoxybenzamine', 'Var', (95, 111)) ('Phenoxybenzamine', 'Chemical', 'MESH:D010643', (95, 111)) ('patient', 'Species', '9606', (21, 28)) 55837 33822312 IGF-1 levels >ULN were newly identified in 3(3.8%) patients on treatment, one of whom had normal baseline levels. ('IGF-1', 'Gene', '3479', (0, 5)) ('levels >ULN', 'Var', (6, 17)) ('IGF-1', 'Gene', (0, 5)) ('patients', 'Species', '9606', (51, 59)) ('men', 'Species', '9606', (68, 71)) 55869 33822312 High Iodine content/pharmacological properties can result in thyroid dysfunction. ('High', 'Var', (0, 4)) ('thyroid dysfunction', 'Disease', (61, 80)) ('thyroid dysfunction', 'Disease', 'MESH:D013959', (61, 80)) ('Iodine', 'Chemical', 'MESH:D007455', (5, 11)) ('result in', 'Reg', (51, 60)) 55892 33822312 Our study highlights the possibility of achieving higher treatment success rate with single calculate131I activity compared to a fixed activity and potential reducing radiation exposure. ('men', 'Species', '9606', (62, 65)) ('single calculate131I activity', 'Var', (85, 114)) ('higher', 'PosReg', (50, 56)) ('treatment success', 'CPA', (57, 74)) 55932 33822312 54% (n = 19) of the patients had mild hyponatraemia (Na 130-134), 26% (n = 9) had moderate hyponatraemia (Na 125-129), and 20% (n = 7) had severe hyponatraemia (Na < 125). ('Na 130-134', 'Var', (53, 63)) ('hyponatraemia', 'Disease', (91, 104)) ('hyponatraemia', 'Disease', 'None', (38, 51)) ('hyponatraemia', 'Disease', (38, 51)) ('hyponatraemia', 'Disease', 'None', (146, 159)) ('patients', 'Species', '9606', (20, 28)) ('moderate hyponatraemia', 'Phenotype', 'HP:0002902', (82, 104)) ('hyponatraemia', 'Disease', (146, 159)) ('hyponatraemia', 'Disease', 'None', (91, 104)) ('Na 125-129', 'Var', (106, 116)) 56028 33822312 Apart from common gastrointestinal side effects, long term Metformin use leads to vitamin B12 malabsorption and to a lesser extent, folate and iron malabsorption. ('iron malabsorption', 'Disease', (143, 161)) ('folate', 'MPA', (132, 138)) ('malabsorption', 'Phenotype', 'HP:0002024', (94, 107)) ('malabsorption', 'Disease', (148, 161)) ('B12 malabsorption', 'Phenotype', 'HP:0200118', (90, 107)) ('malabsorption', 'Disease', 'MESH:D008286', (148, 161)) ('iron malabsorption', 'Disease', 'MESH:D008286', (143, 161)) ('malabsorption', 'Disease', (94, 107)) ('folate', 'Chemical', 'MESH:D005492', (132, 138)) ('malabsorption', 'Disease', 'MESH:D008286', (94, 107)) ('Metformin', 'Chemical', 'MESH:D008687', (59, 68)) ('Metformin', 'Var', (59, 68)) ('malabsorption', 'Phenotype', 'HP:0002024', (148, 161)) ('vitamin B12', 'Chemical', 'MESH:D014805', (82, 93)) 56039 33822312 M. McDermott1, P. Twomey2, S. Van der Kamp2 and RK. ('S. Van der', 'Var', (27, 37)) ('RK', 'Gene', '64080', (48, 50)) ('P. Twomey2', 'Var', (15, 25)) 56069 33822312 1School of Biomedical Sciences, Ulster University, Coleraine, BT52 1SA, UK Benefits of PYY(1-36) on pancreatic beta-cell mass, through NPY1R activation, are well-established, with obvious potential exploitation for diabetes therapy. ('pancreatic', 'MPA', (100, 110)) ('NPY1R', 'Gene', (135, 140)) ('PYY', 'Var', (87, 90)) ('diabetes', 'Disease', (215, 223)) ('diabetes', 'Disease', 'MESH:D003920', (215, 223)) ('activation', 'PosReg', (141, 151)) 56076 33822312 Characteristic STZ reductions (P < 0.05-P < 0.001) in islet number, beta-cell and islet areas, and increase overall alpha-area as well as central islet invasion of alpha-cells were apparent in GluCreERT2;ROSA26-eYFP transgenic mice. ('ROSA26', 'Gene', (204, 210)) ('central islet invasion', 'CPA', (138, 160)) ('GluCreERT2', 'Var', (193, 203)) ('reductions', 'NegReg', (19, 29)) ('ROSA26', 'Gene', '14910', (204, 210)) ('STZ', 'Chemical', 'MESH:D013311', (15, 18)) ('islet number', 'CPA', (54, 66)) ('increase', 'PosReg', (99, 107)) ('alpha-area', 'CPA', (116, 126)) ('transgenic mice', 'Species', '10090', (216, 231)) 56078 33822312 In addition, whilst STZ decreased (P < 0.001) alpha- to beta-cell transition, this transdifferentaition process was significantly (P < 0.001) up-regulated by SL-PYY(1-36). ('decreased', 'NegReg', (24, 33)) ('SL-PYY', 'Chemical', '-', (158, 164)) ('up-regulated', 'PosReg', (142, 154)) ('SL-PYY(1-36', 'Var', (158, 169)) ('alpha- to beta-cell transition', 'CPA', (46, 76)) ('STZ', 'Chemical', 'MESH:D013311', (20, 23)) 56104 33822312 This showed markedly elevated pituitary hormone levels of ACTH (1399 pg/ml), prolactin (353,084 mIU/L), TSH (217 IU/L), FSH (> 200 mIU/ml) and GH (519 ng/ml) consistent with a multifunctional pituitary cyst. ('ACTH', 'Gene', '5443', (58, 62)) ('prolactin', 'Gene', '5617', (77, 86)) ('TSH', 'Chemical', 'MESH:D013972', (104, 107)) ('prolactin', 'Gene', (77, 86)) ('pituitary hormone levels', 'MPA', (30, 54)) ('pituitary cyst', 'Phenotype', 'HP:0410278', (192, 206)) ('elevated', 'PosReg', (21, 29)) ('GH', 'Gene', '8836', (143, 145)) ('ACTH', 'Gene', (58, 62)) ('217 IU/L', 'Var', (109, 117)) ('353,084', 'Var', (88, 95)) 56134 33822312 Acidophilic stem cell adenomas represent 0.2% of pituitary adenomas and are potentially aggressive. ('Acidophilic', 'Var', (0, 11)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (49, 67)) ('adenoma', 'Disease', (22, 29)) ('adenoma', 'Disease', 'MESH:D000236', (59, 66)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (49, 67)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (49, 66)) ('adenoma', 'Disease', (59, 66)) ('pituitary adenomas', 'Disease', (49, 67)) ('adenoma', 'Disease', 'MESH:D000236', (22, 29)) 56168 33822312 Gel filtration chromatography was performed and confirmed the presence of high molecular weight TSH variant alongside normal TSH. ('TSH', 'Chemical', 'MESH:D013972', (125, 128)) ('high', 'MPA', (74, 78)) ('TSH', 'Gene', (96, 99)) ('variant', 'Var', (100, 107)) ('TSH', 'Chemical', 'MESH:D013972', (96, 99)) 56207 33822312 Admission thyroid function showed TSH 9.04 mIU/L despite the inhibitory effect of severe acute illness on TSH secretion and a normal T4 of 16.3 pmol/L. ('TSH', 'Var', (34, 37)) ('TSH', 'Chemical', 'MESH:D013972', (34, 37)) ('TSH', 'Chemical', 'MESH:D013972', (106, 109)) ('TSH secretion', 'MPA', (106, 119)) 56258 33822312 Basal measurements of LH 1.3I U/L, FSH 4.5 IU/L, TSH 0.72 mIU/L, T4 16.8 pmol/L and IGF1 63 ug/L were consistent with ongoing panhypopituitarism. ('TSH', 'Var', (49, 52)) ('hypopituitarism', 'Phenotype', 'HP:0040075', (129, 144)) ('hypopituitarism', 'Disease', 'MESH:D007018', (129, 144)) ('TSH', 'Chemical', 'MESH:D013972', (49, 52)) ('LH 1', 'Gene', (22, 26)) ('IGF1', 'Gene', '3479', (84, 88)) ('hypopituitarism', 'Disease', (129, 144)) ('LH 1', 'Gene', '5351', (22, 26)) ('panhypopituitarism', 'Phenotype', 'HP:0000871', (126, 144)) ('men', 'Species', '9606', (13, 16)) ('IGF1', 'Gene', (84, 88)) 56268 33822312 Laboratory investigations revealed; hyponatremia, serum sodium 127 (135-145) mmol/L; central hypothyroidism, TSH 0.20 (0.3-4.2) mU/L and FT4 4.6 (12-22) pmol/L. ('hypothyroidism', 'Disease', 'MESH:D007037', (93, 107)) ('central hypothyroidism', 'Phenotype', 'HP:0011787', (85, 107)) ('hyponatremia', 'Phenotype', 'HP:0002902', (36, 48)) ('hypothyroidism', 'Phenotype', 'HP:0000821', (93, 107)) ('hyponatremia', 'Disease', 'MESH:D007010', (36, 48)) ('hypothyroidism', 'Disease', (93, 107)) ('TSH', 'Chemical', 'MESH:D013972', (109, 112)) ('hyponatremia', 'Disease', (36, 48)) ('FT4', 'Chemical', '-', (137, 140)) ('TSH', 'Var', (109, 112)) ('serum sodium 127', 'MPA', (50, 66)) ('sodium', 'Chemical', 'MESH:D012964', (56, 62)) 56271 33822312 Urine volume increased (7 L in 24 hours) following commencement of Hydrocortisone replacement; she was diagnosed with central diabetes insipidus; serum osmolality 302 (285-295) mOsm/Kg and urine osmolality 127 mOsm/Kg and commenced on Desmopressin. ('285-295) mOsm/Kg', 'Var', (168, 184)) ('serum osmolality', 'MPA', (146, 162)) ('diabetes insipidus', 'Phenotype', 'HP:0000873', (126, 144)) ('men', 'Species', '9606', (225, 228)) ('urine osmolality', 'MPA', (189, 205)) ('Hydrocortisone', 'Chemical', 'MESH:D006854', (67, 81)) ('Urine volume', 'MPA', (0, 12)) ('men', 'Species', '9606', (54, 57)) ('central diabetes insipidus', 'Disease', (118, 144)) ('men', 'Species', '9606', (89, 92)) ('central diabetes insipidus', 'Phenotype', 'HP:0000863', (118, 144)) ('increased', 'PosReg', (13, 22)) ('central diabetes insipidus', 'Disease', 'MESH:D020790', (118, 144)) ('men', 'Species', '9606', (59, 62)) 56274 33822312 She was commenced on Prednisolone 30 mg daily with resolution of some components of pituitary function over 3 months; oestradiol 634 pmol/L, TSH 0.48 (0.3-4.2) mU/L and FT4 20.6 (12-22) pmol/L. ('oestradiol', 'Chemical', 'MESH:D004958', (118, 128)) ('TSH', 'Var', (141, 144)) ('FT4', 'Chemical', '-', (169, 172)) ('men', 'Species', '9606', (11, 14)) ('oestradiol', 'MPA', (118, 128)) ('Prednisolone', 'Chemical', 'MESH:D011239', (21, 33)) ('TSH', 'Chemical', 'MESH:D013972', (141, 144)) 56291 33822312 We await repeat antibody testing to confirm that switching of insulin reduced insulin antibody levels. ('switching', 'Var', (49, 58)) ('insulin reduced insulin', 'Disease', (62, 85)) ('insulin reduced insulin', 'Disease', 'MESH:D007333', (62, 85)) 56351 33822312 Ten years later, genetic testing revealed a pathogenic variant in the gene encoding the carboxy terminal part of the HIST1H1E protein which confirmed her diagnosis of HIST1H1E syndrome. ('variant', 'Var', (55, 62)) ('HIST1H1E', 'Gene', (167, 175)) ('HIST1H1E', 'Gene', '3008', (167, 175)) ('pathogenic', 'Reg', (44, 54)) ('HIST1H1E', 'Gene', (117, 125)) ('HIST1H1E', 'Gene', '3008', (117, 125)) 56384 33822312 Intravenous (IV) metoprolol and phentolamine led to profound hypotension and pulseless electrical activity cardiac arrest. ('cardiac arrest', 'Disease', 'MESH:D006323', (107, 121)) ('hypotension', 'Disease', 'MESH:D007022', (61, 72)) ('metoprolol', 'Var', (17, 27)) ('cardiac arrest', 'Disease', (107, 121)) ('hypotension', 'Disease', (61, 72)) ('cardiac arrest', 'Phenotype', 'HP:0001695', (107, 121)) ('phentolamine', 'Chemical', 'MESH:D010646', (32, 44)) ('hypotension', 'Phenotype', 'HP:0002615', (61, 72)) ('metoprolol', 'Chemical', 'MESH:D008790', (17, 27)) ('phentolamine', 'Var', (32, 44)) 56451 33822312 Emerging evidence suggests 22q11 deletions are associated with hypogonadism and developmental abnormalities involving cardiac, neurological and genitourinary systems. ('developmental abnormalities', 'Disease', 'MESH:D006130', (80, 107)) ('22q11', 'Gene', (27, 32)) ('hypogonadism', 'Disease', 'MESH:D007006', (63, 75)) ('hypogonadism', 'Phenotype', 'HP:0000135', (63, 75)) ('associated', 'Reg', (47, 57)) ('hypogonadism', 'Disease', (63, 75)) ('developmental abnormalities', 'Disease', (80, 107)) ('deletions', 'Var', (33, 42)) 56452 33822312 48XXXY karyotype is a well-recognized condition of high aneuploidy known to be associated with intellectual disability. ('aneuploidy', 'Disease', (56, 66)) ('associated', 'Reg', (79, 89)) ('intellectual disability', 'Disease', (95, 118)) ('48XXXY karyotype', 'Var', (0, 16)) ('aneuploidy', 'Disease', 'MESH:D000782', (56, 66)) ('intellectual disability', 'Phenotype', 'HP:0001249', (95, 118)) 56455 33822312 Persistent ovulatory function at 30 years in Turner's Syndrome Monosomy 45:X C Miller1, N Phelan1 1Department of Endocrinology, St James's Hospital, Dublin Turner syndrome is the most common chromosomal abnormality in females occurring in 1/2000-1/2500 live births with short stature and ovarian insufficiency the most common manifestations. ('Monosomy', 'Var', (63, 71)) ('short stature and ovarian insufficiency', 'Disease', 'MESH:D016649', (270, 309)) ("Turner's Syndrome", 'Disease', (45, 62)) ('men', 'Species', '9606', (105, 108)) ('short stature', 'Phenotype', 'HP:0004322', (270, 283)) ("Turner's Syndrome", 'Disease', 'MESH:D014424', (45, 62)) 56513 33822312 Androgen receptor analysis confirmed a hemizygous pathogenic androgen receptor gene variant, c.2612C>T (p.Ala871Val), which is compatible with a of diagnosis partial androgen insensitivity syndrome. ('androgen receptor', 'Gene', '367', (61, 78)) ('c.2612C>T', 'Var', (93, 102)) ('Ala871Val', 'Chemical', '-', (106, 115)) ('pathogenic', 'Reg', (50, 60)) ('partial androgen insensitivity syndrome', 'Disease', (158, 197)) ('Androgen receptor', 'Gene', '367', (0, 17)) ('Androgen receptor', 'Gene', (0, 17)) ('androgen receptor', 'Gene', (61, 78)) 56515 33822312 We highlight a case of co-existent partial androgen insensitivity and pituitary adenoma within a single family which has not been described in the literature to date. ('pituitary adenoma', 'Disease', (70, 87)) ('partial', 'Var', (35, 42)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (70, 87)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (70, 87)) 56551 33822312 A family history of diabetes was noted but not of FPLD, however, specific mutation scanning of LMNA and PPARG identified heterozygosity for the pathogenic variant p.R582C in LMNA, confirming a diagnosis of 'atypical' FLPD 2. ('diabetes', 'Disease', (20, 28)) ('PPARG', 'Gene', '5468', (104, 109)) ('p.R582C', 'Mutation', 'rs918645468', (163, 170)) ('PPARG', 'Gene', (104, 109)) ('diabetes', 'Disease', 'MESH:D003920', (20, 28)) ("'atypical' FLPD 2", 'Disease', (206, 223)) ('LMNA', 'Gene', (95, 99)) ('LMNA', 'Gene', (174, 178)) ('LMNA', 'Gene', '4000', (95, 99)) ('pathogenic', 'Reg', (144, 154)) ('p.R582C', 'Var', (163, 170)) ('LMNA', 'Gene', '4000', (174, 178)) 56554 33822312 Typical FPLD has been associated with more severe metabolic phenotypes and the presence of AN, whereas 'atypical' FPLD is associated with a milder phenotype, including the absence of AN with lipodystrophy being more evident in lower limbs, again observed in our patient. ('lower limb', 'Phenotype', 'HP:0006385', (227, 237)) ('lipodystrophy', 'Phenotype', 'HP:0009125', (191, 204)) ('met', 'Gene', '79811', (50, 53)) ('met', 'Gene', (50, 53)) ('patient', 'Species', '9606', (262, 269)) ('lipodystrophy', 'Disease', (191, 204)) ('presence', 'Var', (79, 87)) 56568 33822312 A recent Cochrane review has suggested that supplementation with Vitamin D during pregnancy may reduce the risk of gestational diabetes and its related complications such as preeclampsia. ('eclampsia', 'Disease', 'MESH:D004461', (177, 186)) ('eclampsia', 'Disease', (177, 186)) ('diabetes', 'Disease', 'MESH:D003920', (127, 135)) ('Vitamin D', 'Chemical', 'MESH:D014807', (65, 74)) ('supplementation', 'Var', (44, 59)) ('preeclampsia', 'Phenotype', 'HP:0100602', (174, 186)) ('men', 'Species', '9606', (50, 53)) ('gestational diabetes', 'Phenotype', 'HP:0009800', (115, 135)) ('reduce', 'NegReg', (96, 102)) ('eclampsia', 'Phenotype', 'HP:0100601', (177, 186)) ('diabetes', 'Disease', (127, 135)) 56648 33822312 A review of genetic databases and published literature T Cronin1, E Rasheed1, M Mac Aogain1, S Savage1, E Walsh1, VEF Crowley1 1Department of Biochemistry, St James's Hospital, Dublin Familial partial lipodystrophy type 2 (FPLP2) is a rare condition associated with allelic variants on the LMNA gene. ('LMNA', 'Gene', (290, 294)) ('lipodystrophy', 'Phenotype', 'HP:0009125', (201, 214)) ('LMNA', 'Gene', '4000', (290, 294)) ('allelic variants', 'Var', (266, 282)) ('associated', 'Reg', (250, 260)) ('Familial partial lipodystrophy type 2', 'Disease', (184, 221)) ('men', 'Species', '9606', (134, 137)) 56649 33822312 The "typical' FPLD2 phenotype is associated with a variant 'hotspot' affecting codon 482, while 'atypical' sub-types constitute all other allelic variants associated with FPLD2 phenotypic expression. ('FPLD2', 'Gene', (171, 176)) ('FPLD2', 'Gene', '4000', (171, 176)) ('codon 482', 'Var', (79, 88)) ('FPLD2', 'Gene', (14, 19)) ('FPLD2', 'Gene', '4000', (14, 19)) 56653 33822312 Literature searches were subsequently performed to find peer-reviewed phenotypic data associated with FPLD2 variants. ('FPLD2', 'Gene', (102, 107)) ('FPLD2', 'Gene', '4000', (102, 107)) ('variants', 'Var', (108, 116)) 56654 33822312 Twenty-nine missense variants were identified with supported FPLD2 phenotypic associations, of which three were related to 'typical' forms. ('FPLD2', 'Gene', '4000', (61, 66)) ('related', 'Reg', (112, 119)) ('missense variants', 'Var', (12, 29)) ('FPLD2', 'Gene', (61, 66)) 56676 33822312 Male Pituitary-Gonadal Axis Function in Obstructive Sleep Apnoea Syndrome: The Effect of Continuous Positive Airway Pressure R Leigh1, SM Hamon2, M McWeeney3, P O' Shea4, A O' Loughlin5. ('Sleep Apnoea', 'Phenotype', 'HP:0010535', (52, 64)) ('Obstructive Sleep Apnoea Syndrome', 'Disease', 'MESH:D012893', (40, 73)) ('Apnoea', 'Phenotype', 'HP:0002104', (58, 64)) ('Obstructive Sleep Apnoea Syndrome', 'Disease', (40, 73)) ("P O' Shea4", 'Var', (159, 169)) ('Obstructive Sleep Apnoea', 'Phenotype', 'HP:0002870', (40, 64)) ('M McWeeney3', 'Var', (146, 157)) 56734 33822312 Inpatient Glycaemic Control is Poor in Patients Receiving Insulin Therapy N Reidy1, MC O' Donovan1, MJ Hannon1. ('Patients', 'Species', '9606', (39, 47)) ('MJ', 'Disease', 'MESH:D009207', (100, 102)) ('Insulin', 'Gene', '3630', (58, 65)) ('N Reidy1', 'Var', (74, 82)) ('Insulin', 'Gene', (58, 65)) ('patient', 'Species', '9606', (2, 9)) 56774 33822312 More recently, novel in vitro approaches have facilitated the functional assessment of multiple potential protein variants coded by specific genes, including in PPARG, where genetic variants are associated with autosomal dominant Familial Partial Lipodystrophy Type 3 (FPLD3). ('men', 'Species', '9606', (79, 82)) ('associated', 'Reg', (195, 205)) ('variants', 'Var', (182, 190)) ('variants', 'Var', (114, 122)) ('autosomal dominant Familial Partial Lipodystrophy Type', 'Disease', 'MESH:D052496', (211, 265)) ('PPARG', 'Gene', '5468', (161, 166)) ('PPARG', 'Gene', (161, 166)) ('Lipodystrophy', 'Phenotype', 'HP:0009125', (247, 260)) 56775 33822312 Methods: Logistic Regression and Random Forest Machine Learning analysis were applied to determine the performance of REVEL (and other in-silico tools) relative to MITER a classifier programme derived from a pooled functional assay for PPARG variants. ('PPARG', 'Gene', '5468', (236, 241)) ('PPARG', 'Gene', (236, 241)) ('variants', 'Var', (242, 250)) 56929 33822312 J Kim1, N Ng1, M Zamuner1, N Siddique1, M Byrne1 1Department of Endocrinology, Mater Misericordiae University Hospital, Dublin 7, Ireland Mutations in the HNF1-beta gene can result in pancreatic agenesis leading to insufficient insulin secretion and a diagnosis of diabetes. ('insufficient insulin secretion', 'Disease', 'MESH:D000309', (215, 245)) ('diabetes', 'Disease', (265, 273)) ('men', 'Species', '9606', (56, 59)) ('diabetes', 'Disease', 'MESH:D003920', (265, 273)) ('insufficient insulin secretion', 'Disease', (215, 245)) ('Kim1', 'Gene', (2, 6)) ('result in', 'Reg', (174, 183)) ('HNF1-beta', 'Gene', '6927', (155, 164)) ('pancreatic agenesis', 'Disease', 'MESH:C564908', (184, 203)) ('Kim1', 'Gene', '26762', (2, 6)) ('HNF1-beta', 'Gene', (155, 164)) ('Mutations', 'Var', (138, 147)) ('pancreatic agenesis', 'Disease', (184, 203)) 56933 33822312 12 participants with HNF1-beta gene mutations were phenotyped. ('HNF1-beta', 'Gene', (21, 30)) ('participants', 'Species', '9606', (3, 15)) ('mutations', 'Var', (36, 45)) ('HNF1-beta', 'Gene', '6927', (21, 30)) 56956 33494435 HIF2alpha-Associated Pseudohypoxia Promotes Radioresistance in Pheochromocytoma: Insights from 3D Models Low oxygen levels (hypoxia) as well as genetic defects activating hypoxia signaling pathways (pseudohypoxia) are known to contribute to tumorigenesis and therapy resistance in various cancers. ('hypoxia', 'Disease', 'MESH:D000860', (171, 178)) ('cancer', 'Phenotype', 'HP:0002664', (289, 295)) ('hypoxia', 'Disease', 'MESH:D000860', (27, 34)) ('genetic defects', 'Var', (144, 159)) ('contribute', 'Reg', (227, 237)) ('activating', 'PosReg', (160, 170)) ('oxygen', 'Chemical', 'MESH:D010100', (109, 115)) ('HIF2alpha', 'Gene', '13819', (0, 9)) ('tumor', 'Disease', (241, 246)) ('therapy resistance', 'CPA', (259, 277)) ('tumor', 'Disease', 'MESH:D009369', (241, 246)) ('Low oxygen levels', 'Phenotype', 'HP:0012418', (105, 122)) ('hypoxia', 'Disease', (205, 212)) ('cancers', 'Disease', 'MESH:D009369', (289, 296)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (63, 79)) ('Radioresistance', 'CPA', (44, 59)) ('HIF2alpha', 'Gene', (0, 9)) ('hypoxia', 'Disease', (124, 131)) ('hypoxia', 'Disease', 'MESH:D000860', (205, 212)) ('tumor', 'Phenotype', 'HP:0002664', (241, 246)) ('Pheochromocytoma', 'Disease', (63, 79)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (63, 79)) ('hypoxia', 'Disease', (171, 178)) ('hypoxia', 'Disease', (27, 34)) ('hypoxia', 'Disease', 'MESH:D000860', (124, 131)) ('cancers', 'Phenotype', 'HP:0002664', (289, 296)) ('cancers', 'Disease', (289, 296)) 56973 33494435 [177Lu]Lu-DOTA-TATE is one such therapy, and has shown encouraging treatment responses, including in PCCs/PGLs. ('PCCs/PGLs', 'Disease', (101, 110)) ('PCCs', 'Chemical', '-', (101, 105)) ('Lu-DOTA-TATE', 'Chemical', 'MESH:C447941', (7, 19)) ('[177Lu]Lu-DOTA-TATE', 'Var', (0, 19)) 56980 33494435 In a subgroup of PCCs/PGLs, mutations of germline and somatic origin associated with the dysregulation of hypoxia signaling pathways have been described to result in the oxygen-independent stabilization of HIFalpha:a metabolic state that is referred to as pseudohypoxia. ('hypoxia', 'Disease', 'MESH:D000860', (262, 269)) ('HIFalpha', 'Gene', '15251;13819', (206, 214)) ('hypoxia', 'Disease', (106, 113)) ('hypoxia', 'Disease', 'MESH:D000860', (106, 113)) ('HIFalpha', 'Gene', (206, 214)) ('oxygen-independent stabilization', 'MPA', (170, 202)) ('oxygen', 'Chemical', 'MESH:D010100', (170, 176)) ('hypoxia', 'Disease', (262, 269)) ('mutations', 'Var', (28, 37)) ('PCCs', 'Chemical', '-', (17, 21)) 56983 33494435 Since the stabilization of HIF2alpha is often associated with treatment resistance in various cancers, we hypothesized that it may also contribute to the radiation resistance of PCCs/PGLs. ('cancers', 'Disease', 'MESH:D009369', (94, 101)) ('PCCs/PGLs', 'Disease', (178, 187)) ('radiation resistance', 'CPA', (154, 174)) ('contribute', 'Reg', (136, 146)) ('cancers', 'Disease', (94, 101)) ('PCCs', 'Chemical', '-', (178, 182)) ('HIF2alpha', 'Gene', '13819', (27, 36)) ('stabilization', 'Var', (10, 23)) ('cancer', 'Phenotype', 'HP:0002664', (94, 100)) ('associated', 'Reg', (46, 56)) ('cancers', 'Phenotype', 'HP:0002664', (94, 101)) ('HIF2alpha', 'Gene', (27, 36)) 56994 33494435 Genetically modified MPC +HIF2alpha spheroids showed increases in growth rates, maximum diameters, and resistance to external irradiation compared to MPC +EV spheroids, resembling a Hif2alpha-deficient "empty vector" control (Figure 2A). ('MPC', 'Var', (21, 24)) ('Hif2alpha', 'Gene', (182, 191)) ('resistance', 'CPA', (103, 113)) ('growth rates', 'CPA', (66, 78)) ('spheroids', 'Chemical', '-', (36, 45)) ('HIF2alpha', 'Gene', (26, 35)) ('maximum diameters', 'CPA', (80, 97)) ('spheroids', 'Chemical', '-', (158, 167)) ('MPC +EV', 'Chemical', '-', (150, 157)) ('increases', 'PosReg', (53, 62)) ('Hif2alpha', 'Gene', '13819', (182, 191)) ('HIF2alpha', 'Gene', '13819', (26, 35)) 56997 33494435 A significantly (p < 0.001) higher irradiation dose was necessary to achieve the growth arrest of MPC +HIF2alpha (GAD = 16 +- 1 Gy) compared to MPC +EV spheroids (GAD = 5.0 +- 0.3 Gy) (Figure 2B). ('MPC +EV', 'Chemical', '-', (144, 151)) ('growth arrest', 'Disease', (81, 94)) ('growth arrest', 'Disease', 'MESH:D006323', (81, 94)) ('MPC +HIF2alpha', 'Var', (98, 112)) ('growth arrest', 'Phenotype', 'HP:0001510', (81, 94)) ('GAD', 'Phenotype', 'HP:0031164', (114, 117)) ('GAD', 'Phenotype', 'HP:0031164', (163, 166)) 56998 33494435 At the highest irradiation dose of 40 Gy, the reduction in the relative growth of MPC +HIF2alpha spheroids (%SG = -19 +- 3%) was significantly (p < 0.001) lower compared to MPC +EV spheroids (%SG = -75 +- 4%). ('spheroids', 'Chemical', '-', (97, 106)) ('reduction', 'NegReg', (46, 55)) ('MPC +EV', 'Chemical', '-', (173, 180)) ('lower', 'NegReg', (155, 160)) ('spheroids', 'Chemical', '-', (181, 190)) ('MPC +HIF2alpha', 'Var', (82, 96)) 57001 33494435 Additional investigations on the supplementation of nutritional medium with frequently used cell culture additives showed that G418 (250 microg/mL) and DMSO (0.5%) significantly (p < 0.001) altered the treatment outcome after the external irradiation of both MPC +HIF2alpha and MPC +EV spheroids (for details see Supplementary Data, Table S3 and Figure S2). ('DMSO', 'Chemical', 'MESH:D004121', (152, 156)) ('G418', 'Chemical', 'MESH:C010680', (127, 131)) ('MPC +EV', 'Chemical', '-', (278, 285)) ('G418', 'Var', (127, 131)) ('HIF2alpha', 'Gene', '13819', (264, 273)) ('altered', 'Reg', (190, 197)) ('treatment', 'MPA', (202, 211)) ('HIF2alpha', 'Gene', (264, 273)) 57002 33494435 In brief, the radiosensitizing properties of G418 decreased the doses required for the long-term control of spheroids, whereas the radioprotective properties of DMSO increased the doses required for achieving both short-term growth arrest and long-term spheroid control. ('spheroids', 'Chemical', '-', (108, 117)) ('doses', 'MPA', (64, 69)) ('growth arrest', 'Disease', 'MESH:D006323', (225, 238)) ('G418', 'Chemical', 'MESH:C010680', (45, 49)) ('growth arrest', 'Phenotype', 'HP:0001510', (225, 238)) ('DMSO', 'Chemical', 'MESH:D004121', (161, 165)) ('decreased', 'NegReg', (50, 59)) ('G418', 'Var', (45, 49)) ('growth arrest', 'Disease', (225, 238)) 57004 33494435 After exposure to initial activity, concentrations between 0 and 1.25 MBq/mL, which approximately correspond to absorbed doses between 0 and 10 Gy, both MPC +HIF2alpha and MPC +EV spheroids showed three response scenarios, similar to what has been observed after external irradiation (Figure 3A). ('MPC +EV', 'Chemical', '-', (172, 179)) ('HIF2alpha', 'Gene', '13819', (158, 167)) ('MPC', 'Var', (153, 156)) ('HIF2alpha', 'Gene', (158, 167)) ('EV spheroids', 'Chemical', '-', (177, 189)) 57006 33494435 Short-term growth arrest was reached at significantly (p < 0.05) higher initial activity concentrations administered to MPC +HIF2alpha spheroids (GAD = 1.7 +- 0.7 MBq/mL, 14 +- 6 Gy) compared to MPC +EV (GAD = 0.3 +- 0.02 MBq/mL, 2.2 +- 0.2 Gy) (Figure 3B). ('MPC +EV', 'Chemical', '-', (196, 203)) ('GAD', 'Phenotype', 'HP:0031164', (205, 208)) ('spheroids', 'Chemical', '-', (135, 144)) ('MPC +HIF2alpha', 'Var', (120, 134)) ('activity', 'MPA', (80, 88)) ('growth arrest', 'Disease', (11, 24)) ('growth arrest', 'Disease', 'MESH:D006323', (11, 24)) ('higher', 'PosReg', (65, 71)) ('GAD', 'Phenotype', 'HP:0031164', (146, 149)) ('growth arrest', 'Phenotype', 'HP:0001510', (11, 24)) 57008 33494435 The long-term control of MPC +HIF2alpha spheroids required higher initial activity concentrations (SCD50 = 0.6 +- 0.02 MBq/mL, 4.6 +- 0.2 Gy) compared to MPC +EV (SCD50 = 0.3 +- 0.02 MBq/mL, 2.7 +- 0.1 Gy), (Figure 3C). ('MPC', 'Var', (25, 28)) ('MPC +EV', 'Chemical', '-', (155, 162)) ('HIF2alpha', 'Gene', '13819', (30, 39)) ('activity concentrations', 'MPA', (74, 97)) ('spheroids', 'Chemical', '-', (40, 49)) ('HIF2alpha', 'Gene', (30, 39)) ('higher', 'PosReg', (59, 65)) 57015 33494435 Our investigations provide the first experimental evidence that the expression of HIF2a contributes to a radiation-resistant phenotype of PCCs/PGLs. ('HIF2a', 'Gene', (82, 87)) ('HIF2a', 'Gene', '13819', (82, 87)) ('PCCs/PGLs', 'Disease', (138, 147)) ('PCCs', 'Chemical', '-', (138, 142)) ('expression', 'Var', (68, 78)) ('contributes to', 'Reg', (88, 102)) ('radiation-resistant phenotype', 'CPA', (105, 134)) 57016 33494435 PCCs/PGLs of the pseudohypoxic cluster are characterized by higher HIF2alpha expression and HIF2alpha protein stabilization through multiple mechanisms, including mutations in VHL, FH or succinate dehydrogenase genes preventing HIF degradation or mutations sparing the protein from proteasomal degradation. ('VHL', 'Gene', '22346', (176, 179)) ('sparing', 'NegReg', (257, 264)) ('FH', 'Disease', 'MESH:D006938', (181, 183)) ('protein stabilization', 'MPA', (102, 123)) ('HIF2alpha', 'Gene', (92, 101)) ('mutations', 'Var', (247, 256)) ('PCCs', 'Chemical', '-', (0, 4)) ('protein', 'Protein', (269, 276)) ('HIF2alpha', 'Gene', (67, 76)) ('preventing', 'NegReg', (217, 227)) ('higher', 'PosReg', (60, 66)) ('proteasomal degradation', 'MPA', (282, 305)) ('HIF2alpha', 'Gene', '13819', (92, 101)) ('HIF degradation', 'Disease', 'MESH:D055959', (228, 243)) ('VHL', 'Gene', (176, 179)) ('expression', 'MPA', (77, 87)) ('mutations', 'Var', (163, 172)) ('HIF degradation', 'Disease', (228, 243)) ('HIF2alpha', 'Gene', '13819', (67, 76)) 57051 33494435 When G418 remained in the medium during treatment experiments instead of penicillin and streptomycin, MPC spheroids showed elevated radiosensitivity characterized by significantly decreased SCD50. ('penicillin', 'Chemical', 'MESH:D010406', (73, 83)) ('G418', 'Var', (5, 9)) ('radiosensitivity', 'CPA', (132, 148)) ('elevated', 'PosReg', (123, 131)) ('decreased', 'NegReg', (180, 189)) ('streptomycin', 'Chemical', 'MESH:D013307', (88, 100)) ('spheroids', 'Chemical', '-', (106, 115)) ('SCD50', 'MPA', (190, 195)) ('MPC', 'Chemical', '-', (102, 105)) ('elevated radiosensitivity', 'Phenotype', 'HP:0010997', (123, 148)) ('G418', 'Chemical', 'MESH:C010680', (5, 9)) 57057 33494435 The effect most likely results from prolonged radiation exposure during [177Lu]LuCl3 incubation, where spheroids re-oxygenate after initial radiation-induced tissue damage, leading to the enhanced radiosensitivity of previously radioresistant tumor cells. ('enhanced radiosensitivity', 'Phenotype', 'HP:0010997', (188, 213)) ('enhanced', 'PosReg', (188, 196)) ('spheroids', 'Chemical', '-', (103, 112)) ('radiosensitivity', 'CPA', (197, 213)) ('[177Lu', 'Var', (72, 78)) ('tumor', 'Disease', 'MESH:D009369', (243, 248)) ('prolonged radiation exposure', 'Phenotype', 'HP:0011133', (36, 64)) ('LuCl3', 'Chemical', '-', (79, 84)) ('tumor', 'Phenotype', 'HP:0002664', (243, 248)) ('oxygen', 'Chemical', 'MESH:D010100', (116, 122)) ('tumor', 'Disease', (243, 248)) 57060 33494435 By using [177Lu]LuCl3 instead of, e.g., [177Lu]Lu-DOTA-TATE for the incubation of MPC spheroids, we excluded all aspects of SSTR2-specific targeting from interfering with the experimental outcome of radionuclide treatment. ('spheroids', 'Chemical', '-', (86, 95)) ('LuCl3', 'Chemical', '-', (16, 21)) ('SSTR2', 'Gene', (124, 129)) ('MPC', 'Chemical', '-', (82, 85)) ('[177Lu]Lu-DOTA-TATE', 'Var', (40, 59)) ('Lu-DOTA-TATE', 'Chemical', 'MESH:C447941', (47, 59)) ('SSTR2', 'Gene', '20606', (124, 129)) 57194 33256692 Positron emission tomography (PET) with 18F-fluorodihydroxyphenylalanine, 18F-fluorodeoxyglucose, 18F-fluorodopamine, 11C-hydroxyephedrine or 68Ga-labelled somatostatin analogues have lower radiation exposure and superior image quality but a higher cost than MIBG However, these PET approaches can be used as alternatives to 123I-MIBG or as additional procedures if 123I-MIBG scanning is negative. ('age', 'Gene', '5973', (224, 227)) ('MIBG', 'Chemical', '-', (371, 375)) ('somatostatin', 'Gene', '6750', (156, 168)) ('123I-MIBG', 'Chemical', '-', (325, 334)) ('MIBG', 'Chemical', '-', (330, 334)) ('123I-MIBG', 'Chemical', '-', (366, 375)) ('somatostatin', 'Gene', (156, 168)) ('18F-fluorodihydroxyphenylalanine', 'Var', (40, 72)) ('age', 'Gene', (224, 227)) ('18F-fluorodopamine', 'Chemical', '-', (98, 116)) ('68Ga', 'Chemical', 'MESH:C000615430', (142, 146)) ('11C-hydroxyephedrine', 'Chemical', '-', (118, 138)) ('MIBG', 'Chemical', '-', (259, 263)) ('18F-fluorodopamine', 'Var', (98, 116)) ('18F-fluorodihydroxyphenylalanine', 'Chemical', 'MESH:C043437', (40, 72)) ('18F-fluorodeoxyglucose', 'Chemical', 'MESH:D019788', (74, 96)) ('18F-fluorodeoxyglucose', 'Var', (74, 96)) 57332 32604789 Germline mutations contributes to the tumor growth and progression. ('Germline mutations', 'Var', (0, 18)) ('tumor', 'Disease', (38, 43)) ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('tumor', 'Disease', 'MESH:D009369', (38, 43)) ('progression', 'CPA', (55, 66)) 57335 32604789 Cluster 1 genes that are associated with hypoxic response (von Hippel-Lindau (VHL), succinate dehydrogenase A (SDHA), succinate dehydrogenase B (SDHB), succinate dehydrogenase C (SDHC), succinate dehydrogenase D (SDHD) and succinate dehydrogenase AF2 (SDHAF2) and hypoxia-inducible transcription factors (2A HIF2A)) while cluster 2 tumors (rearranged during transfection (RET), neurofibromatosis 1 (NF1), transmembrane protein 127 (TMEM127) and MYC-associated factor X (MAX)) mutations that activates kinase signaling and protein translation. ('kinase signaling', 'MPA', (501, 517)) ('SDHB', 'Gene', (145, 149)) ('VHL', 'Gene', (78, 81)) ('neurofibromatosis 1', 'Gene', '4763', (378, 397)) ('succinate dehydrogenase A', 'Gene', (84, 109)) ('MYC-associated factor X', 'Gene', '4149', (445, 468)) ('hypoxia', 'Disease', (264, 271)) ('tumor', 'Phenotype', 'HP:0002664', (332, 337)) ('activates', 'PosReg', (491, 500)) ('SDHC', 'Gene', (179, 183)) ('tumors', 'Phenotype', 'HP:0002664', (332, 338)) ('von Hippel-Lindau', 'Gene', (59, 76)) ('RET', 'Gene', '5979', (372, 375)) ('succinate dehydrogenase A', 'Gene', '6389', (84, 109)) ('mutations', 'Var', (476, 485)) ('VHL', 'Gene', '7428', (78, 81)) ('SDHA', 'Gene', (111, 115)) ('SDHD', 'Gene', '6392', (213, 217)) ('neurofibromatosis 1', 'Gene', (378, 397)) ('succinate dehydrogenase B', 'Gene', (118, 143)) ('succinate dehydrogenase D', 'Gene', '6392', (186, 211)) ('hypoxia', 'Disease', 'MESH:D000860', (264, 271)) ('succinate dehydrogenase C', 'Gene', '6391', (152, 177)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (378, 395)) ('succinate dehydrogenase D', 'Gene', (186, 211)) ('SDHA', 'Gene', '6389', (111, 115)) ('tumors', 'Disease', (332, 338)) ('NF1', 'Gene', '4763', (399, 402)) ('succinate dehydrogenase C', 'Gene', (152, 177)) ('succinate dehydrogenase AF2', 'Gene', (223, 250)) ('von Hippel-Lindau', 'Gene', '7428', (59, 76)) ('protein translation', 'MPA', (522, 541)) ('SDHAF2', 'Gene', '54949', (252, 258)) ('SDHAF2', 'Gene', (252, 258)) ('RET', 'Gene', (372, 375)) ('succinate dehydrogenase B', 'Gene', '6390', (118, 143)) ('SDHD', 'Gene', (213, 217)) ('SDHA', 'Gene', (252, 256)) ('NF1', 'Gene', (399, 402)) ('TMEM127', 'Gene', (432, 439)) ('SDHB', 'Gene', '6390', (145, 149)) ('HIF2A', 'Gene', '2034', (308, 313)) ('hypoxic', 'Disease', (41, 48)) ('tumors', 'Disease', 'MESH:D009369', (332, 338)) ('HIF2A', 'Gene', (308, 313)) ('SDHC', 'Gene', '6391', (179, 183)) ('hypoxic', 'Disease', 'MESH:D000860', (41, 48)) ('SDHA', 'Gene', '6389', (252, 256)) ('succinate dehydrogenase AF2', 'Gene', '54949', (223, 250)) ('MYC-associated factor X', 'Gene', (445, 468)) ('TMEM127', 'Gene', '55654', (432, 439)) ('succinate dehydrogenase A', 'Gene', '6389', (223, 248)) 57348 32604789 The 131I-MIBG therapy adverse events include leukopenia, thrombocytopenia and bone marrow toxicity. ('thrombocytopenia', 'Disease', (57, 73)) ('leukopenia', 'Disease', 'MESH:D007970', (45, 55)) ('leukopenia', 'Disease', (45, 55)) ('bone marrow toxicity', 'Disease', (78, 98)) ('MIBG', 'Chemical', 'MESH:D019797', (9, 13)) ('131I-MIBG', 'Var', (4, 13)) ('thrombocytopenia', 'Disease', 'MESH:D013921', (57, 73)) ('leukopenia', 'Phenotype', 'HP:0001882', (45, 55)) ('thrombocytopenia', 'Phenotype', 'HP:0001873', (57, 73)) ('bone marrow toxicity', 'Disease', 'MESH:D001855', (78, 98)) 57373 31988909 Genetic mutations in the succinate dehydrogenase genes have been described in paraganglioma patients, and those with early onset should be evaluated when genetic testing is available. ('paraganglioma', 'Disease', (78, 91)) ('described', 'Reg', (65, 74)) ('succinate dehydrogenase', 'Gene', '6390', (25, 48)) ('patients', 'Species', '9606', (92, 100)) ('succinate dehydrogenase', 'Gene', (25, 48)) ('paraganglioma', 'Disease', 'MESH:D010235', (78, 91)) ('Genetic mutations', 'Var', (0, 17)) ('paraganglioma', 'Phenotype', 'HP:0002668', (78, 91)) 57402 31988909 Genetic analyses disclosed the role of mutations in the succinate dehydrogenase (SDH) genes in familial and nonfamilial paragangliomas. ('paraganglioma', 'Phenotype', 'HP:0002668', (120, 133)) ('succinate dehydrogenase', 'Gene', '6390', (56, 79)) ('familial paragangliomas', 'Disease', (111, 134)) ('mutations', 'Var', (39, 48)) ('succinate dehydrogenase', 'Gene', (56, 79)) ('SDH', 'Gene', '6390', (81, 84)) ('gliomas', 'Phenotype', 'HP:0009733', (127, 134)) ('familial paragangliomas', 'Disease', 'MESH:D010235', (111, 134)) ('SDH', 'Gene', (81, 84)) ('paragangliomas', 'Phenotype', 'HP:0002668', (120, 134)) 57403 31988909 Succinate dehydrogenase enzymatic activity is lost partially or completely in the tumor, despite the typo of gene mutation 8. ('Succinate dehydrogenase', 'Gene', (0, 23)) ('gene mutation', 'Var', (109, 122)) ('tumor', 'Disease', 'MESH:D009369', (82, 87)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('lost', 'NegReg', (46, 50)) ('tumor', 'Disease', (82, 87)) ('Succinate dehydrogenase', 'Gene', '6390', (0, 23)) 57411 31988909 Nuclear imaging may also be required, especially in genetic cases, to delineate the extent of the tumor and detect possible synchronous lesions in mutation carries or those at risk (positive family history and young age). ('synchronous lesions', 'Disease', (124, 143)) ('tumor', 'Disease', 'MESH:D009369', (98, 103)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('synchronous lesions', 'Disease', 'MESH:D009378', (124, 143)) ('tumor', 'Disease', (98, 103)) ('mutation carries', 'Var', (147, 163)) 57418 31988909 Catecholamine and 24-h urinary metanephrine concentrations were normal, and screening for germline mutations in PGL-1, PGL-2, PGL-3, PGL4, and PGL-5 were negative. ('PGL-5', 'Gene', (143, 148)) ('PGL-2', 'Gene', '54949', (119, 124)) ('Catecholamine', 'Chemical', 'MESH:D002395', (0, 13)) ('metanephrine', 'Chemical', 'MESH:D008676', (31, 43)) ('PGL-1', 'Gene', (112, 117)) ('PGL4', 'Gene', (133, 137)) ('PGL4', 'Gene', '6390', (133, 137)) ('PGL-3', 'Gene', '6391', (126, 131)) ('PGL-2', 'Gene', (119, 124)) ('mutations', 'Var', (99, 108)) ('PGL-3', 'Gene', (126, 131)) ('PGL-5', 'Gene', '6389', (143, 148)) 57431 31988909 PGL2 relates to mutation in the SDHAF2 gene and presents as head and neck paraganglioma without other known lesions. ('neck paraganglioma', 'Disease', 'MESH:D010235', (69, 87)) ('mutation', 'Var', (16, 24)) ('PGL2', 'Gene', '54949', (0, 4)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (60, 87)) ('presents', 'Reg', (48, 56)) ('PGL2', 'Gene', (0, 4)) ('SDHAF2', 'Gene', '54949', (32, 38)) ('SDHAF2', 'Gene', (32, 38)) ('paraganglioma', 'Phenotype', 'HP:0002668', (74, 87)) ('neck paraganglioma', 'Disease', (69, 87)) 57432 31988909 PGL3 is related to mutation in the SDHC gene and is associated with head and neck paragangliomas and gastrointestinal stromal tumors. ('neck paragangliomas and gastrointestinal stromal tumors', 'Disease', 'MESH:C564650', (77, 132)) ('paragangliomas', 'Phenotype', 'HP:0002668', (82, 96)) ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('mutation', 'Var', (19, 27)) ('tumors', 'Phenotype', 'HP:0002664', (126, 132)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (68, 96)) ('PGL3', 'Gene', '6391', (0, 4)) ('associated', 'Reg', (52, 62)) ('PGL3', 'Gene', (0, 4)) ('gliomas', 'Phenotype', 'HP:0009733', (89, 96)) ('SDHC', 'Gene', (35, 39)) ('head and neck paragangliomas', 'Disease', 'MESH:D006258', (68, 96)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (68, 95)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('SDHC', 'Gene', '6391', (35, 39)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (101, 132)) 57433 31988909 PGL4 relates to mutation in the SDHB gene and the disease could present as pheochromocytoma or head and neck paraganglioma, gastrointestinal stromal tumors, and renal cell carcinoma. ('gastrointestinal stromal tumors', 'Disease', (124, 155)) ('SDHB', 'Gene', (32, 36)) ('tumors', 'Phenotype', 'HP:0002664', (149, 155)) ('PGL4', 'Gene', '6390', (0, 4)) ('renal cell carcinoma', 'Disease', 'MESH:D002292', (161, 181)) ('PGL4', 'Gene', (0, 4)) ('present', 'Reg', (64, 71)) ('neck paraganglioma', 'Disease', (104, 122)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (95, 122)) ('tumor', 'Phenotype', 'HP:0002664', (149, 154)) ('renal cell carcinoma', 'Disease', (161, 181)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (161, 181)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (75, 91)) ('paraganglioma', 'Phenotype', 'HP:0002668', (109, 122)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (104, 122)) ('pheochromocytoma', 'Disease', (75, 91)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (124, 155)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (124, 155)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (75, 91)) ('carcinoma', 'Phenotype', 'HP:0030731', (172, 181)) ('mutation', 'Var', (16, 24)) ('SDHB', 'Gene', '6390', (32, 36)) 57434 31988909 PGL5 correlates with mutation in the SDHD gene and could present with paraganglioma and gastrointestinal stromal tumors. ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (88, 119)) ('paraganglioma and gastrointestinal stromal tumors', 'Disease', 'MESH:C564650', (70, 119)) ('SDHD', 'Gene', '6392', (37, 41)) ('PGL5', 'Gene', '6389', (0, 4)) ('SDHD', 'Gene', (37, 41)) ('mutation', 'Var', (21, 29)) ('PGL5', 'Gene', (0, 4)) ('paraganglioma', 'Phenotype', 'HP:0002668', (70, 83)) ('present with', 'Reg', (57, 69)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('tumors', 'Phenotype', 'HP:0002664', (113, 119)) 57435 31988909 Carney-Stratakis syndrome, or Carney dyad, is autosomal dominant and associated with mutations in the SDHB, SDHC, and SDHD genes. ('Carney-Stratakis syndrome', 'Disease', (0, 25)) ('SDHD', 'Gene', (118, 122)) ('SDHD', 'Gene', '6392', (118, 122)) ('SDHB', 'Gene', '6390', (102, 106)) ('associated', 'Reg', (69, 79)) ('SDHC', 'Gene', (108, 112)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (0, 25)) ('mutations', 'Var', (85, 94)) ('SDHB', 'Gene', (102, 106)) ('Carney dyad', 'Disease', 'MESH:D056733', (30, 41)) ('SDHC', 'Gene', '6391', (108, 112)) ('Carney dyad', 'Disease', (30, 41)) 57509 31988909 Genetic mutations have been described in paraganglioma patients, and those with early onset should be evaluated when genetic testing is available. ('paraganglioma', 'Phenotype', 'HP:0002668', (41, 54)) ('patients', 'Species', '9606', (55, 63)) ('paraganglioma', 'Disease', (41, 54)) ('Genetic mutations', 'Var', (0, 17)) ('paraganglioma', 'Disease', 'MESH:D010235', (41, 54)) ('described', 'Reg', (28, 37)) 57566 31747934 She was tested for genetic variants of lactate dehydrogenase, succinate dehydrogenase and for mutations associated with multiple endocrine neoplasia, type 2; results were negative. ('tested', 'Reg', (8, 14)) ('variants', 'Var', (27, 35)) ('mutations', 'Var', (94, 103)) ('endocrine neoplasia', 'Disease', 'MESH:D009377', (129, 148)) ('neoplasia', 'Phenotype', 'HP:0002664', (139, 148)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (129, 148)) ('endocrine neoplasia', 'Disease', (129, 148)) ('lactate', 'Enzyme', (39, 46)) 57580 31747934 However, hypotension should be expected to be as likely in VL as in open surgery, since it is initially associated with renal vein ligature and interruption of catecholamine incretion, followed by relative adrenal insufficiency later on. ('adrenal insufficiency', 'Disease', (206, 227)) ('hypotension', 'Disease', 'MESH:D007022', (9, 20)) ('interruption', 'Var', (144, 156)) ('hypotension', 'Disease', (9, 20)) ('associated', 'Reg', (104, 114)) ('catecholamine', 'Chemical', 'MESH:D002395', (160, 173)) ('hypotension', 'Phenotype', 'HP:0002615', (9, 20)) ('adrenal insufficiency', 'Phenotype', 'HP:0000846', (206, 227)) ('adrenal insufficiency', 'Disease', 'MESH:D000309', (206, 227)) 57622 27376430 Genetic testing for RET proto-oncogene mutation revealed a common polymorphism in exon (c.2071 G>A/p.G691S) and a synonymous variation in exon 15 (c.2712 C>G/p.S904S). ('c.2712 C>G/p.S904S', 'Var', (147, 165)) ('RET', 'Gene', '5979', (20, 23)) ('c.2071 G>A/p.G691S', 'Var', (88, 106)) ('RET', 'Gene', (20, 23)) ('p.S904S', 'Mutation', 'rs1800863', (158, 165)) ('p.G691S', 'Mutation', 'rs1799939', (99, 106)) ('c.2071 G>A', 'Mutation', 'rs1799939', (88, 98)) ('c.2712 C>G', 'Mutation', 'rs1800863', (147, 157)) 57642 27376430 Genetic test for BRAF gene V600E mutation was negative. ('BRAF', 'Gene', (17, 21)) ('BRAF', 'Gene', '673', (17, 21)) ('V600E', 'Var', (27, 32)) ('V600E', 'Mutation', 'rs113488022', (27, 32)) 57693 27376430 However, I131 MIBG has a 77-90% sensitivity and 95-100% specificity in detecting such tumors. ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('I131 MIBG', 'Var', (9, 18)) ('tumors', 'Phenotype', 'HP:0002664', (86, 92)) ('tumors', 'Disease', 'MESH:D009369', (86, 92)) ('tumors', 'Disease', (86, 92)) ('I131 MIBG', 'Chemical', 'MESH:D019797', (9, 18)) 57700 27376430 Recent studies in the clinical trials of BRAF inhibitors in patients with malignant melanoma are promising for the treatment of this highly lethal disease.Notably, genetic test for BRAF (V600E) activating mutation was negative in our patient. ('patient', 'Species', '9606', (60, 67)) ('malignant melanoma', 'Disease', 'MESH:D008545', (74, 92)) ('malignant melanoma', 'Disease', (74, 92)) ('V600E', 'Mutation', 'rs113488022', (187, 192)) ('patients', 'Species', '9606', (60, 68)) ('melanoma', 'Phenotype', 'HP:0002861', (84, 92)) ('BRAF', 'Gene', '673', (41, 45)) ('BRAF', 'Gene', (181, 185)) ('V600E', 'Var', (187, 192)) ('patient', 'Species', '9606', (234, 241)) ('BRAF', 'Gene', '673', (181, 185)) ('BRAF', 'Gene', (41, 45)) ('malignant melanoma', 'Phenotype', 'HP:0002861', (74, 92)) 57711 30080879 UBTOR depletion activates mTOR signaling and promotes cell growth, whilst UBTOR overexpression suppresses colony formation in cancer cell lines. ('cancer', 'Phenotype', 'HP:0002664', (126, 132)) ('suppresses', 'NegReg', (95, 105)) ('cancer', 'Disease', (126, 132)) ('UBTOR', 'Chemical', '-', (74, 79)) ('cell growth', 'CPA', (54, 65)) ('promotes', 'PosReg', (45, 53)) ('depletion', 'Var', (6, 15)) ('activates', 'PosReg', (16, 25)) ('colony formation in', 'CPA', (106, 125)) ('cancer', 'Disease', 'MESH:D009369', (126, 132)) ('UBTOR', 'Chemical', '-', (0, 5)) ('mTOR signaling', 'Pathway', (26, 40)) 57712 30080879 Studies in cultured cells and zebrafish model show that UBTOR inhibits mTOR signaling by stabilizing the mTOR complex component DEPTOR, and ubtor gene disruption result in higher mTOR activity and aggravate HRAS(G12V) induced neoplasia in the zebrafish. ('UBTOR', 'Chemical', '-', (56, 61)) ('inhibits', 'NegReg', (62, 70)) ('neoplasia', 'Phenotype', 'HP:0002664', (226, 235)) ('mTOR activity', 'MPA', (179, 192)) ('gene disruption', 'Var', (146, 161)) ('ubtor', 'Gene', (140, 145)) ('higher', 'PosReg', (172, 178)) ('neoplasia', 'Disease', (226, 235)) ('mTOR signaling', 'MPA', (71, 85)) ('zebrafish', 'Species', '7955', (30, 39)) ('ubtor', 'Chemical', '-', (140, 145)) ('aggravate', 'PosReg', (197, 206)) ('G12V', 'Mutation', 'rs104894230', (212, 216)) ('HRAS', 'CPA', (207, 211)) ('zebrafish', 'Species', '7955', (243, 252)) ('stabilizing', 'MPA', (89, 100)) ('mTOR complex component DEPTOR', 'MPA', (105, 134)) ('neoplasia', 'Disease', 'MESH:D009369', (226, 235)) 57713 30080879 Lastly, UBTOR depletion promotes tumor growth and mTOR signaling in a xenograft mouse model. ('tumor', 'Disease', 'MESH:D009369', (33, 38)) ('UBTOR', 'Gene', (8, 13)) ('tumor', 'Phenotype', 'HP:0002664', (33, 38)) ('mouse', 'Species', '10090', (80, 85)) ('depletion', 'Var', (14, 23)) ('mTOR signaling', 'MPA', (50, 64)) ('UBTOR', 'Chemical', '-', (8, 13)) ('promotes', 'PosReg', (24, 32)) ('tumor', 'Disease', (33, 38)) 57715 30080879 The mTOR signaling pathways are essential for cell growth and clinically mis-regulation of the mTOR pathways are implicated in human diseases including tumor formation, obesity, epilepsy, autism and neurodegeneration. ('tumor', 'Disease', 'MESH:D009369', (152, 157)) ('mTOR pathways', 'Pathway', (95, 108)) ('obesity', 'Disease', (169, 176)) ('human', 'Species', '9606', (127, 132)) ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('epilepsy', 'Disease', (178, 186)) ('autism and neurodegeneration', 'Disease', 'MESH:D001321', (188, 216)) ('tumor', 'Disease', (152, 157)) ('obesity', 'Phenotype', 'HP:0001513', (169, 176)) ('implicated', 'Reg', (113, 123)) ('mis-regulation', 'Var', (73, 87)) ('neurodegeneration', 'Phenotype', 'HP:0002180', (199, 216)) ('autism', 'Phenotype', 'HP:0000717', (188, 194)) ('epilepsy', 'Disease', 'MESH:D004827', (178, 186)) ('epilepsy', 'Phenotype', 'HP:0001250', (178, 186)) ('obesity', 'Disease', 'MESH:D009765', (169, 176)) 57717 30080879 Inhibiting Ubtor function promotes cell growth in neurons and cancer cells. ('Inhibiting', 'Var', (0, 10)) ('promotes', 'PosReg', (26, 34)) ('cancer', 'Phenotype', 'HP:0002664', (62, 68)) ('cell growth in neurons', 'CPA', (35, 57)) ('cancer', 'Disease', (62, 68)) ('cancer', 'Disease', 'MESH:D009369', (62, 68)) ('Ubtor function', 'Gene', (11, 25)) ('Ubtor', 'Chemical', '-', (11, 16)) 57719 30080879 Functional analyses in human cells and the zebrafish model indicate Ubtor inhibits mTOR signaling by stabilizing the mTOR complex component DEPTOR, and ubtor gene disruption resulted in higher mTOR activity and aggravated cancer formation in the zebrafish. ('zebrafish', 'Species', '7955', (246, 255)) ('mTOR signaling', 'MPA', (83, 97)) ('cancer', 'Disease', 'MESH:D009369', (222, 228)) ('stabilizing', 'MPA', (101, 112)) ('cancer', 'Disease', (222, 228)) ('aggravated', 'PosReg', (211, 221)) ('ubtor', 'Chemical', '-', (152, 157)) ('Ubtor', 'Chemical', '-', (68, 73)) ('cancer', 'Phenotype', 'HP:0002664', (222, 228)) ('mTOR complex component DEPTOR', 'MPA', (117, 146)) ('gene disruption', 'Var', (158, 173)) ('inhibits', 'NegReg', (74, 82)) ('human', 'Species', '9606', (23, 28)) ('zebrafish', 'Species', '7955', (43, 52)) ('ubtor', 'Gene', (152, 157)) ('higher', 'PosReg', (186, 192)) ('mTOR activity', 'MPA', (193, 206)) 57720 30080879 UBTOR depletion promotes tumor growth and mTOR signaling in xenograft-bearing mice. ('promotes', 'PosReg', (16, 24)) ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('tumor', 'Disease', (25, 30)) ('depletion', 'Var', (6, 15)) ('UBTOR', 'Gene', (0, 5)) ('UBTOR', 'Chemical', '-', (0, 5)) ('tumor', 'Disease', 'MESH:D009369', (25, 30)) ('mice', 'Species', '10090', (78, 82)) ('mTOR signaling', 'MPA', (42, 56)) 57721 30080879 Thus our study provide evidence that Ubtor constitutes a novel negative feedback mechanism to control mTOR signaling and cell growth, and manipulations of Ubtor function may potentially be utilized to optimize mTOR signaling activities for treatments of cancers and other diseases. ('cancer', 'Phenotype', 'HP:0002664', (254, 260)) ('manipulations', 'Var', (138, 151)) ('Ubtor', 'Chemical', '-', (37, 42)) ('cancers', 'Phenotype', 'HP:0002664', (254, 261)) ('mTOR signaling', 'MPA', (102, 116)) ('cancers', 'Disease', (254, 261)) ('cancers', 'Disease', 'MESH:D009369', (254, 261)) ('cell growth', 'CPA', (121, 132)) ('Ubtor', 'Chemical', '-', (155, 160)) 57736 30080879 In parallel, Ubtor depletion promotes tumor growth and mTOR signaling in xenograft-bearing mice. ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('tumor', 'Disease', (38, 43)) ('mice', 'Species', '10090', (91, 95)) ('depletion', 'Var', (19, 28)) ('mTOR signaling', 'MPA', (55, 69)) ('Ubtor', 'Gene', (13, 18)) ('Ubtor', 'Chemical', '-', (13, 18)) ('tumor', 'Disease', 'MESH:D009369', (38, 43)) ('promotes', 'PosReg', (29, 37)) 57744 30080879 Fluorescence dye Cy3 labeled small interference RNA (Cy3-siRNA) was transfected into the dissociated hippocampal neurons to knock down Ubtor expression levels (Fig 1C), and the outgrowth of the neurites were revealed by acetylated tubulin stain and measured at 36 hours post in vitro culture (HIV) and 56 HIV (Fig 1A and S2A Fig). ('Ubtor', 'MPA', (135, 140)) ('Cy3', 'Chemical', '-', (53, 56)) ('Cy3', 'Chemical', '-', (17, 20)) ('Ubtor', 'Chemical', '-', (135, 140)) ('knock', 'Var', (124, 129)) 57745 30080879 The results showed the neurite outgrowth length was almost twice long in Ubtor knock-down hippocampal neurons compared with neurons transfected with control siRNA at 36 HIV (Fig 1B). ('knock-down', 'Var', (79, 89)) ('Ubtor', 'Chemical', '-', (73, 78)) ('neurite outgrowth length', 'CPA', (23, 47)) ('Ubtor', 'Gene', (73, 78)) 57746 30080879 Longer neurite outgrowth length was also observed in Ubtor knock-down hippocampal neurons at 56 HIV (S2A Fig). ('Longer', 'PosReg', (0, 6)) ('knock-down', 'Var', (59, 69)) ('Ubtor', 'Chemical', '-', (53, 58)) 57750 30080879 Small interference RNA (siRNA) was transfected into the ld-PC12 cells to knock down Ubtor expression levels (Fig 1G). ('PC12', 'CellLine', 'CVCL:0481', (59, 63)) ('knock', 'Var', (73, 78)) ('Ubtor expression levels', 'MPA', (84, 107)) ('Ubtor', 'Chemical', '-', (84, 89)) 57751 30080879 After the transfected cells were treated with NGF for 48 hours, the neurite outgrowth length doubled in Ubtor knock-down cells compared with cells transfected with control siRNA (Fig 1D and 1E). ('neurite outgrowth length', 'CPA', (68, 92)) ('doubled', 'PosReg', (93, 100)) ('Ubtor', 'Gene', (104, 109)) ('knock-down', 'Var', (110, 120)) ('Ubtor', 'Chemical', '-', (104, 109)) 57753 30080879 UBTOR was listed as a downregulated or mutated gene in tumor tissues in previous studies. ('tumor', 'Disease', 'MESH:D009369', (55, 60)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('tumor', 'Disease', (55, 60)) ('mutated', 'Var', (39, 46)) ('UBTOR', 'Gene', (0, 5)) ('UBTOR', 'Chemical', '-', (0, 5)) 57755 30080879 Thus we examined effects of UBTOR reduction in cultured human cells by lentivirus mediated shRNA knockdowns (Fig 2B). ('knockdowns', 'Var', (97, 107)) ('human', 'Species', '9606', (56, 61)) ('reduction', 'NegReg', (34, 43)) ('UBTOR', 'Gene', (28, 33)) ('shRNA', 'Gene', (91, 96)) ('UBTOR', 'Chemical', '-', (28, 33)) 57756 30080879 The results showed UBTOR knock-down promoted proliferation in human HEK293T cells and human glioblastoma U87MG cells (Fig 2A). ('rat', 'Species', '10116', (52, 55)) ('glioblastoma', 'Disease', (92, 104)) ('glioblastoma', 'Disease', 'MESH:D005909', (92, 104)) ('proliferation', 'CPA', (45, 58)) ('human', 'Species', '9606', (62, 67)) ('HEK293T', 'CellLine', 'CVCL:0063', (68, 75)) ('UBTOR', 'Gene', (19, 24)) ('knock-down', 'Var', (25, 35)) ('human', 'Species', '9606', (86, 91)) ('U87MG', 'CellLine', 'CVCL:0022', (105, 110)) ('glioblastoma', 'Phenotype', 'HP:0012174', (92, 104)) ('UBTOR', 'Chemical', '-', (19, 24)) ('promoted', 'PosReg', (36, 44)) 57757 30080879 In addition, UBTOR knock-down also promoted colony formation in HEK293T cells (Fig 2C). ('colony formation', 'CPA', (44, 60)) ('HEK293T', 'CellLine', 'CVCL:0063', (64, 71)) ('promoted', 'PosReg', (35, 43)) ('UBTOR', 'Gene', (13, 18)) ('UBTOR', 'Chemical', '-', (13, 18)) ('knock-down', 'Var', (19, 29)) 57761 30080879 We found no difference in the phosphorylation levels of ERK1/2, a crucial kinase of the Ras-MAPK signaling pathway, between the Ubtor knock-down and control PC12 cells (S4B Fig). ('knock-down', 'Var', (134, 144)) ('phosphorylation', 'MPA', (30, 45)) ('MAPK', 'Gene', '50689;116590;50689', (92, 96)) ('Ubtor', 'Chemical', '-', (128, 133)) ('ERK1/2', 'Gene', (56, 62)) ('ERK1/2', 'Gene', '50689;116590', (56, 62)) ('PC12', 'CellLine', 'CVCL:0481', (157, 161)) ('MAPK', 'Gene', (92, 96)) 57762 30080879 Phosphorylation level of RPS6 (p-S6), a read-out of mTORC1 activity, was marked higher in the Ubtor knock-down ld-PC12 cells before NGF treatment (Fig 3A). ('p-S6', 'Gene', (31, 35)) ('mTORC1', 'Gene', '382056', (52, 58)) ('RPS6', 'Gene', (25, 29)) ('knock-down', 'Var', (100, 110)) ('RPS6', 'Gene', '6194', (25, 29)) ('mTORC1', 'Gene', (52, 58)) ('Phosphorylation level', 'MPA', (0, 21)) ('p-S6', 'Gene', '338413', (31, 35)) ('higher', 'PosReg', (80, 86)) ('PC12', 'CellLine', 'CVCL:0481', (114, 118)) ('Ubtor', 'Chemical', '-', (94, 99)) 57786 30080879 In the PC12 cells, the expression level of DEPTOR was reduced by 40% after 6 hours treatment of NGF (Fig 6A), consistent with degradation of DEPTOR caused by mTOR activation. ('expression level', 'MPA', (23, 39)) ('NGF', 'Var', (96, 99)) ('reduced', 'NegReg', (54, 61)) ('PC12', 'CellLine', 'CVCL:0481', (7, 11)) 57790 30080879 In agreement with UBTOR's stabilization effect on DEPTOR, knockdown of UBTOR in HEK293T cells caused significant reduction of DEPTOR under basal growth condition (Fig 6B). ('UBTOR', 'Chemical', '-', (18, 23)) ('UBTOR', 'Gene', (71, 76)) ('reduction', 'NegReg', (113, 122)) ('UBTOR', 'Chemical', '-', (71, 76)) ('DEPTOR', 'MPA', (126, 132)) ('knockdown', 'Var', (58, 67)) ('HEK293T', 'CellLine', 'CVCL:0063', (80, 87)) 57792 30080879 The transmembrane domain of UBTOR (Delta896-916) was dispensable for the stabilization effect on DEPTOR, whilst further deletion into the C terminal region of UBTOR protein (Delta852-916) abrogated this stabilization effect (Fig 6C). ('UBTOR', 'Chemical', '-', (159, 164)) ('Delta852-916', 'Var', (174, 186)) ('stabilization', 'MPA', (203, 216)) ('Delta852', 'Mutation', 'c.del852', (174, 182)) ('abrogated', 'NegReg', (188, 197)) ('stabilization', 'MPA', (73, 86)) ('Delta896', 'Mutation', 'c.del896', (35, 43)) ('Delta896-916', 'Var', (35, 47)) ('UBTOR', 'Chemical', '-', (28, 33)) 57793 30080879 As expected, the UBTOR1-467 N terminal region was required for the full stabilization effects of DEPTOR (Fig 6D), because UBTOR1-467 interacted with DEPTOR (Fig 5). ('UBTOR', 'Chemical', '-', (17, 22)) ('interacted', 'Interaction', (133, 143)) ('UBTOR1-467', 'Var', (122, 132)) ('UBTOR', 'Chemical', '-', (122, 127)) 57797 30080879 To investigate Ubtor's functions in intact animals, ubtor gene was disrupted in zebrafish by TALEN and CRISPR/Cas9 mediated mutagenesis (see Materials and Methods). ('Ubtor', 'Chemical', '-', (15, 20)) ('disrupted', 'NegReg', (67, 76)) ('ubtor', 'Chemical', '-', (52, 57)) ('mutagenesis', 'Var', (124, 135)) ('ubtor gene', 'Gene', (52, 62)) ('zebrafish', 'Species', '7955', (80, 89)) 57798 30080879 The targeted gene disruption resulted in frame-shift and multiple stop codons in the Ubtor coding sequence. ('resulted in', 'Reg', (29, 40)) ('Ubtor', 'Chemical', '-', (85, 90)) ('stop codons', 'MPA', (66, 77)) ('frame-shift', 'Var', (41, 52)) ('disruption', 'Var', (18, 28)) 57800 30080879 The homozygous ubtor mutant had no gross developmental abnormalities. ('mutant', 'Var', (21, 27)) ('developmental abnormalities', 'Phenotype', 'HP:0001263', (41, 68)) ('ubtor', 'Chemical', '-', (15, 20)) ('developmental abnormalities', 'Disease', (41, 68)) ('developmental abnormalities', 'Disease', 'MESH:D006130', (41, 68)) 57801 30080879 Results from behavior tests showed ubtor mutant had enhanced fear-evoked freezing and compromised C-start responses (S7 Fig), suggesting ubtor mutation had subtle but significant effects on neurodevelopment and animal physiology. ('ubtor', 'Chemical', '-', (137, 142)) ('mutant', 'Var', (41, 47)) ('ubtor', 'Chemical', '-', (35, 40)) ('compromised', 'NegReg', (86, 97)) ('fear-evoked freezing', 'CPA', (61, 81)) ('enhanced', 'PosReg', (52, 60)) ('C-start responses', 'MPA', (98, 115)) ('ubtor', 'Gene', (35, 40)) 57802 30080879 To determine if UBTOR's regulation of mTOR signaling also occur in intact animals, we examined p-S6K levels in ubtor mutant and control larvae at 5 dpf, and found p-S6K was increased approximately 4-fold in the brains of ubtor mutant compared with the controls (Fig 7A). ('p-S6K', 'Gene', (163, 168)) ('mutant', 'Var', (227, 233)) ('mutant', 'Var', (117, 123)) ('p-S6K', 'Gene', (95, 100)) ('ubtor', 'Chemical', '-', (111, 116)) ('UBTOR', 'Chemical', '-', (16, 21)) ('p-S6K', 'Gene', '6198', (163, 168)) ('ubtor', 'Chemical', '-', (221, 226)) ('increased', 'PosReg', (173, 182)) ('ubtor', 'Gene', (111, 116)) ('ubtor', 'Gene', (221, 226)) ('p-S6K', 'Gene', '6198', (95, 100)) 57803 30080879 To further examine the effects of ubtor mutation on the mTOR signaling, zebrafish of 13.5 dpf were fasted for 12 hours to down-regulate, then refed with ample food for 12 hours to activate the mTOR activities. ('mutation', 'Var', (40, 48)) ('ubtor', 'Chemical', '-', (34, 39)) ('down-regulate', 'NegReg', (122, 135)) ('zebrafish', 'Species', '7955', (72, 81)) ('activate', 'PosReg', (180, 188)) 57806 30080879 The ubtor mutation caused significantly higher levels of p-S6K and p-S6 in the fasted animals, and significantly higher p-S6 levels in the refed animals (Fig 7B). ('higher', 'PosReg', (40, 46)) ('p-S6', 'Gene', '338413', (67, 71)) ('p-S6K', 'Gene', (57, 62)) ('p-S6', 'Gene', '338413', (57, 61)) ('ubtor', 'Gene', (4, 9)) ('higher', 'PosReg', (113, 119)) ('p-S6', 'Gene', (67, 71)) ('mutation', 'Var', (10, 18)) ('p-S6', 'Gene', '338413', (120, 124)) ('p-S6', 'Gene', (57, 61)) ('p-S6', 'Gene', (120, 124)) ('p-S6K', 'Gene', '6198', (57, 62)) ('ubtor', 'Chemical', '-', (4, 9)) 57807 30080879 Thus, ubtor mutation caused significant upregulation of the mTOR signaling in the intact animals. ('ubtor', 'Gene', (6, 11)) ('upregulation', 'PosReg', (40, 52)) ('mutation', 'Var', (12, 20)) ('mTOR signaling', 'MPA', (60, 74)) ('ubtor', 'Chemical', '-', (6, 11)) 57808 30080879 HRAS(G12V), a dominant-active form of human oncogene HRAS, can promote tumor formation when overexpressed in zebrafish embryos. ('HRAS(G12V', 'Var', (0, 9)) ('zebrafish', 'Species', '7955', (109, 118)) ('human', 'Species', '9606', (38, 43)) ('tumor', 'Disease', 'MESH:D009369', (71, 76)) ('G12V', 'Mutation', 'rs104894230', (5, 9)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('promote', 'PosReg', (63, 70)) ('tumor', 'Disease', (71, 76)) 57809 30080879 Consistent with the in vitro effects of UBTOR knockdowns on cell growth and colony formation in the cultured cells, microinjection of the HRAS(G12V) construct into zebrafish ubtor mutant embryos increased neoplasia rate to over 70% compared with about 30% for the injection into the wild type controls (Fig 7C). ('zebrafish', 'Species', '7955', (164, 173)) ('neoplasia', 'Disease', (205, 214)) ('rat', 'Species', '10116', (215, 218)) ('mutant', 'Var', (180, 186)) ('G12V', 'Mutation', 'rs104894230', (143, 147)) ('UBTOR', 'Chemical', '-', (40, 45)) ('neoplasia', 'Disease', 'MESH:D009369', (205, 214)) ('neoplasia', 'Phenotype', 'HP:0002664', (205, 214)) ('HRAS(G12V', 'Gene', (138, 147)) ('increased', 'PosReg', (195, 204)) ('ubtor', 'Chemical', '-', (174, 179)) 57810 30080879 In total, 19 out of the 59 wild type control zebrafish developed tumors, whilst 26 out of the 37 ubtor mutants had tumors (chi12 = 13.23, P < 0.001). ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('mutants', 'Var', (103, 110)) ('zebrafish', 'Species', '7955', (45, 54)) ('ubtor', 'Chemical', '-', (97, 102)) ('tumors', 'Disease', (115, 121)) ('tumors', 'Disease', (65, 71)) ('tumors', 'Disease', 'MESH:D009369', (115, 121)) ('tumors', 'Disease', 'MESH:D009369', (65, 71)) ('tumors', 'Phenotype', 'HP:0002664', (65, 71)) ('tumors', 'Phenotype', 'HP:0002664', (115, 121)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) 57817 30080879 Thus, UBTOR depletion promoted tumor growth and mTOR signaling in the xenograft mouse model. ('mTOR signaling', 'MPA', (48, 62)) ('tumor', 'Phenotype', 'HP:0002664', (31, 36)) ('promoted', 'PosReg', (22, 30)) ('tumor', 'Disease', (31, 36)) ('mouse', 'Species', '10090', (80, 85)) ('UBTOR', 'Gene', (6, 11)) ('UBTOR', 'Chemical', '-', (6, 11)) ('tumor', 'Disease', 'MESH:D009369', (31, 36)) ('depletion', 'Var', (12, 21)) 57818 30080879 In this study, UBTOR depletion promotes neurite and cellular growth, whilst UBTOR overexpression suppresses colony formation in cancer cell lines. ('cancer', 'Disease', 'MESH:D009369', (128, 134)) ('suppresses', 'NegReg', (97, 107)) ('UBTOR', 'Chemical', '-', (76, 81)) ('promotes', 'PosReg', (31, 39)) ('neurite', 'CPA', (40, 47)) ('UBTOR', 'Chemical', '-', (15, 20)) ('cancer', 'Phenotype', 'HP:0002664', (128, 134)) ('depletion', 'Var', (21, 30)) ('cellular growth', 'CPA', (52, 67)) ('colony formation', 'CPA', (108, 124)) ('cancer', 'Disease', (128, 134)) 57820 30080879 Investigations in the zebrafish model further showed disruption of ubtor gene upregulated the mTOR signaling and promoted HRAS(G12V) mediated tumor formation in intact animals. ('disruption', 'Var', (53, 63)) ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('promoted', 'PosReg', (113, 121)) ('upregulated', 'PosReg', (78, 89)) ('mTOR signaling', 'MPA', (94, 108)) ('tumor', 'Disease', (142, 147)) ('ubtor gene', 'Gene', (67, 77)) ('G12V', 'Mutation', 'rs104894230', (127, 131)) ('ubtor', 'Chemical', '-', (67, 72)) ('zebrafish', 'Species', '7955', (22, 31)) ('tumor', 'Disease', 'MESH:D009369', (142, 147)) 57821 30080879 Similarly, UBTOR depletion promoted tumor growth and mTOR signaling in a xenograft mouse model. ('UBTOR', 'Gene', (11, 16)) ('mouse', 'Species', '10090', (83, 88)) ('promoted', 'PosReg', (27, 35)) ('tumor', 'Disease', 'MESH:D009369', (36, 41)) ('depletion', 'Var', (17, 26)) ('mTOR signaling', 'MPA', (53, 67)) ('tumor', 'Phenotype', 'HP:0002664', (36, 41)) ('tumor', 'Disease', (36, 41)) ('UBTOR', 'Chemical', '-', (11, 16)) 57829 30080879 Abnormal activation of the mTOR signaling may provide explanation why UBTOR is downregulated or mutated in tumor tissues. ('mutated', 'Var', (96, 103)) ('activation', 'PosReg', (9, 19)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumor', 'Disease', (107, 112)) ('UBTOR', 'Chemical', '-', (70, 75)) ('mTOR signaling', 'Pathway', (27, 41)) ('downregulated', 'NegReg', (79, 92)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) 57830 30080879 Consistent with this view, our results show UBTOR knock-down promote growth in HEK293T and U87MG cells, and overexpression of UBTOR reduced colony formation in both the HEK293T cells and the carcinoma T24 cells. ('knock-down', 'Var', (50, 60)) ('promote', 'PosReg', (61, 68)) ('growth', 'CPA', (69, 75)) ('reduced', 'NegReg', (132, 139)) ('carcinoma', 'Disease', 'MESH:D002277', (191, 200)) ('U87MG', 'CellLine', 'CVCL:0022', (91, 96)) ('carcinoma', 'Phenotype', 'HP:0030731', (191, 200)) ('UBTOR', 'Gene', (44, 49)) ('colony formation', 'CPA', (140, 156)) ('carcinoma', 'Disease', (191, 200)) ('UBTOR', 'Chemical', '-', (44, 49)) ('UBTOR', 'Chemical', '-', (126, 131)) ('HEK293T', 'CellLine', 'CVCL:0063', (79, 86)) ('HEK293T', 'CellLine', 'CVCL:0063', (169, 176)) 57831 30080879 Enhancement of HRASG12V mediated tumor formation in the homozygous ubtor zebrafish mutant and larger xenograft tumor growth of UBOTR-depleted U87MG cells in the nude mice further support involvement of Ubtor in neoplasia. ('mutant', 'Var', (83, 89)) ('zebrafish', 'Species', '7955', (73, 82)) ('tumor', 'Phenotype', 'HP:0002664', (111, 116)) ('neoplasia', 'Phenotype', 'HP:0002664', (211, 220)) ('tumor', 'Disease', (33, 38)) ('ubtor', 'Chemical', '-', (67, 72)) ('U87MG', 'CellLine', 'CVCL:0022', (142, 147)) ('xenograft tumor', 'Disease', (101, 116)) ('tumor', 'Disease', 'MESH:D009369', (33, 38)) ('HRASG12V mediated', 'Gene', (15, 32)) ('xenograft tumor', 'Disease', 'MESH:D009369', (101, 116)) ('tumor', 'Disease', (111, 116)) ('neoplasia', 'Disease', 'MESH:D009369', (211, 220)) ('Ubtor', 'Chemical', '-', (202, 207)) ('HRASG12V', 'CellLine', 'CVCL:M676', (15, 23)) ('Enhancement', 'PosReg', (0, 11)) ('tumor', 'Disease', 'MESH:D009369', (111, 116)) ('neoplasia', 'Disease', (211, 220)) ('tumor', 'Phenotype', 'HP:0002664', (33, 38)) ('nude mice', 'Species', '10090', (161, 170)) 57840 30080879 Manipulations of Ubtor function may potentially be utilized to optimize mTOR signaling activities for treatments of cancers and other diseases. ('cancers', 'Phenotype', 'HP:0002664', (116, 123)) ('cancers', 'Disease', 'MESH:D009369', (116, 123)) ('Ubtor', 'Chemical', '-', (17, 22)) ('cancer', 'Phenotype', 'HP:0002664', (116, 122)) ('cancers', 'Disease', (116, 123)) ('Manipulations', 'Var', (0, 13)) 57854 30080879 To disrupt the ubtor gene in the zebrafish, three lesions were introduced into the zebrafish genome via the TALEN and CRSPR/Cas9 mediated targeted gene modifications (see S1 Table for target site sequences and lesion information). ('zebrafish', 'Species', '7955', (83, 92)) ('gene modifications', 'Var', (147, 165)) ('modifications', 'Var', (152, 165)) ('ubtor gene', 'Gene', (15, 25)) ('zebrafish', 'Species', '7955', (33, 42)) ('ubtor', 'Chemical', '-', (15, 20)) 57868 30080879 Preliminary tests showed ubtor mutant fish exhibited reduced C-start after repetitive stimulations. ('reduced', 'NegReg', (53, 60)) ('ubtor', 'Chemical', '-', (25, 30)) ('C-start', 'MPA', (61, 68)) ('ubtor mutant', 'Var', (25, 37)) 57935 27867439 Evaluation of Head and Neck Paragangliomas by Computed Tomography in Patients with Pheochromocytoma-Paraganglioma Syndromes Hereditary head and neck paragangliomas (HNP) are very often associated with pheochromocytoma-paraganglioma syndromes, which are caused by mutations in genes encoding subunits of succinate dehydrogenase (SDHx) complex. ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (135, 163)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (28, 41)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (100, 113)) ('mutations', 'Var', (263, 272)) ('pheochromocytoma-paraganglioma syndromes', 'Disease', (201, 241)) ('succinate dehydrogenase', 'Gene', '6389', (303, 326)) ('Neck Paragangliomas', 'Disease', 'MESH:D010235', (23, 42)) ('Pheochromocytoma-Paraganglioma', 'Disease', (83, 113)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (83, 99)) ('neck paragangliomas', 'Disease', (144, 163)) ('SDHx', 'Gene', (328, 332)) ('succinate dehydrogenase', 'Gene', (303, 326)) ('paragangliomas', 'Phenotype', 'HP:0002668', (149, 163)) ('paraganglioma', 'Phenotype', 'HP:0002668', (149, 162)) ('HNP', 'Chemical', '-', (165, 168)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (201, 217)) ('SDHx', 'Chemical', '-', (328, 332)) ('Head and Neck Paragangliomas', 'Phenotype', 'HP:0002864', (14, 42)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (28, 42)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (144, 163)) ('Neck Paragangliomas', 'Disease', (23, 42)) ('pheochromocytoma-paraganglioma syndromes', 'Disease', 'MESH:D010673', (201, 241)) ('Patients', 'Species', '9606', (69, 77)) ('paraganglioma', 'Phenotype', 'HP:0002668', (218, 231)) ('associated', 'Reg', (185, 195)) ('HNP', 'Phenotype', 'HP:0002864', (165, 168)) ('Pheochromocytoma-Paraganglioma', 'Disease', 'MESH:D010673', (83, 113)) 57937 27867439 A total of 72 patients with SDHx mutations underwent computed tomography examinations of the head and neck. ('SDHx', 'Chemical', '-', (28, 32)) ('patients', 'Species', '9606', (14, 22)) ('SDHx', 'Gene', (28, 32)) ('mutations', 'Var', (33, 42)) 57939 27867439 The HNP were statistically more frequent in carriers of SDHD mutations compared to carriers of SDHB mutations (72.1% vs. 43.5%, p=0.033). ('SDHD', 'Gene', (56, 60)) ('SDHD', 'Gene', '6392', (56, 60)) ('SDHB', 'Gene', '6390', (95, 99)) ('mutations', 'Var', (61, 70)) ('HNP', 'Disease', (4, 7)) ('SDHB', 'Gene', (95, 99)) ('HNP', 'Phenotype', 'HP:0002864', (4, 7)) ('HNP', 'Chemical', '-', (4, 7)) ('frequent', 'Reg', (32, 40)) 57940 27867439 Multiple tumors more often occurred in patients with SDHD mutations 26/31 (83.9%) than in patients with SDHB mutations 6/11 (54.5%) p=0.05. ('mutations', 'Var', (58, 67)) ('patients', 'Species', '9606', (39, 47)) ('patients', 'Species', '9606', (90, 98)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('SDHD', 'Gene', (53, 57)) ('SDHD', 'Gene', '6392', (53, 57)) ('tumors', 'Phenotype', 'HP:0002664', (9, 15)) ('SDHB', 'Gene', '6390', (104, 108)) ('occurred', 'Reg', (27, 35)) ('Multiple tumors', 'Disease', (0, 15)) ('Multiple tumors', 'Disease', 'MESH:D009369', (0, 15)) ('SDHB', 'Gene', (104, 108)) 57941 27867439 There was a significant difference in the prevalence of carotid paragangliomas between patients with SDHB and SDHD mutations (7/11 [63.6%] vs. 30/31 [96.8%], respectively, p=0.004). ('carotid paragangliomas', 'Disease', 'MESH:D002345', (56, 78)) ('mutations', 'Var', (115, 124)) ('SDHB', 'Gene', (101, 105)) ('SDHB', 'Gene', '6390', (101, 105)) ('paragangliomas', 'Phenotype', 'HP:0002668', (64, 78)) ('carotid paragangliomas', 'Phenotype', 'HP:0100635', (56, 78)) ('carotid paragangliomas', 'Disease', (56, 78)) ('SDHD', 'Gene', '6392', (110, 114)) ('patients', 'Species', '9606', (87, 95)) ('SDHD', 'Gene', (110, 114)) ('paraganglioma', 'Phenotype', 'HP:0002668', (64, 77)) 57942 27867439 Patients with SDHD mutations more often had carotid paragangliomas located on the left side than on the right side, as compared to SDHB mutations 25/31 (80.6%) vs. 4/11 (36.4%), p=0.006. ('SDHB', 'Gene', '6390', (131, 135)) ('carotid paragangliomas', 'Disease', (44, 66)) ('SDHB', 'Gene', (131, 135)) ('mutations', 'Var', (19, 28)) ('SDHD', 'Gene', '6392', (14, 18)) ('paragangliomas', 'Phenotype', 'HP:0002668', (52, 66)) ('Patients', 'Species', '9606', (0, 8)) ('carotid paragangliomas', 'Disease', 'MESH:D002345', (44, 66)) ('paraganglioma', 'Phenotype', 'HP:0002668', (52, 65)) ('SDHD', 'Gene', (14, 18)) ('carotid paragangliomas', 'Phenotype', 'HP:0100635', (44, 66)) 57943 27867439 SDHx mutations predispose to multifocal and bilateral HNP. ('HNP', 'Phenotype', 'HP:0002864', (54, 57)) ('mutations', 'Var', (5, 14)) ('HNP', 'Chemical', '-', (54, 57)) ('SDHx', 'Chemical', '-', (0, 4)) ('SDHx', 'Gene', (0, 4)) ('predispose to', 'Reg', (15, 28)) 57945 27867439 Patients with SDHD mutations are characterized by higher frequency of HNP than patients with SDHB mutations, which is mainly driven by higher frequency of carotid body tumors in patients with SDHD mutations. ('carotid body tumors', 'Disease', 'MESH:D002345', (155, 174)) ('HNP', 'Phenotype', 'HP:0002864', (70, 73)) ('tumors', 'Phenotype', 'HP:0002664', (168, 174)) ('SDHB', 'Gene', (93, 97)) ('carotid body tumors', 'Disease', (155, 174)) ('HNP', 'Chemical', '-', (70, 73)) ('SDHB', 'Gene', '6390', (93, 97)) ('carotid body tumors', 'Phenotype', 'HP:0002668', (155, 174)) ('patients', 'Species', '9606', (178, 186)) ('mutations', 'Var', (19, 28)) ('SDHD', 'Gene', '6392', (14, 18)) ('Patients', 'Species', '9606', (0, 8)) ('SDHD', 'Gene', (192, 196)) ('SDHD', 'Gene', '6392', (192, 196)) ('patients', 'Species', '9606', (79, 87)) ('SDHD', 'Gene', (14, 18)) ('HNP', 'Disease', (70, 73)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) 57953 27867439 Mutations in ten different genes connected with hereditary HNP were found. ('hereditary HNP', 'Disease', (48, 62)) ('Mutations', 'Var', (0, 9)) ('HNP', 'Chemical', '-', (59, 62)) ('HNP', 'Phenotype', 'HP:0002864', (59, 62)) 57954 27867439 Pheochromocytoma-paraganglioma (PGL) syndromes are associated with SDHx gene mutations, encoding the subunits of the succinate dehydrogenase enzyme complex, subunit D (SDHD), B (SDHB) and C (SDHC), (PGL type 1,4, and 3, respectively). ('SDHx', 'Chemical', '-', (67, 71)) ('SDHD', 'Gene', '6392', (168, 172)) ('SDHx', 'Gene', (67, 71)) ('paraganglioma', 'Phenotype', 'HP:0002668', (17, 30)) ('PGL', 'Phenotype', 'HP:0002668', (32, 35)) ('SDHD', 'Gene', (168, 172)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('succinate dehydrogenase', 'Gene', (117, 140)) ('associated', 'Reg', (51, 61)) ('PGL', 'Phenotype', 'HP:0002668', (199, 202)) ('mutations', 'Var', (77, 86)) ('SDHC', 'Gene', (191, 195)) ('SDHC', 'Gene', '6391', (191, 195)) ('Pheochromocytoma-paraganglioma', 'Disease', 'MESH:D010673', (0, 30)) ('SDHB', 'Gene', '6390', (178, 182)) ('succinate dehydrogenase', 'Gene', '6389', (117, 140)) ('Pheochromocytoma-paraganglioma', 'Disease', (0, 30)) ('SDHB', 'Gene', (178, 182)) 57955 27867439 Recently, germline mutations in two consecutive subunits of succinate dehydrogenase (SDHA, SDHAF2) have been found in patients with pheochromocytoma-paraganglioma syndrome. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (132, 148)) ('SDHA', 'Gene', (85, 89)) ('succinate dehydrogenase', 'Gene', (60, 83)) ('pheochromocytoma-paraganglioma syndrome', 'Disease', (132, 171)) ('found', 'Reg', (109, 114)) ('SDHA', 'Gene', '6389', (85, 89)) ('SDHA', 'Gene', '6389', (91, 95)) ('succinate dehydrogenase', 'Gene', '6389', (60, 83)) ('germline mutations', 'Var', (10, 28)) ('paraganglioma', 'Phenotype', 'HP:0002668', (149, 162)) ('SDHAF2', 'Gene', '54949', (91, 97)) ('SDHAF2', 'Gene', (91, 97)) ('pheochromocytoma-paraganglioma syndrome', 'Disease', 'MESH:D010673', (132, 171)) ('patients', 'Species', '9606', (118, 126)) ('SDHA', 'Gene', (91, 95)) 57959 27867439 The patients with confirmed SDHx mutations by genetic testing entered the study. ('SDHx', 'Chemical', '-', (28, 32)) ('patients', 'Species', '9606', (4, 12)) ('SDHx', 'Gene', (28, 32)) ('mutations', 'Var', (33, 42)) 57960 27867439 This study consisted of 72 patients with SDXs mutations (36 men, 36 women, mean age 44+-14.26 y, age range 13-74 yrs, 44 index cases, 28 relatives), 23 (31.9%) patients with SDHB mutations, 5 (6.9%) with SDHC mutations, and 44 (61.1%) with SDHD mutations. ('patients', 'Species', '9606', (160, 168)) ('SDXs', 'Gene', (41, 45)) ('mutations', 'Var', (46, 55)) ('men', 'Species', '9606', (70, 73)) ('SDHB', 'Gene', '6390', (174, 178)) ('patients', 'Species', '9606', (27, 35)) ('women', 'Species', '9606', (68, 73)) ('SDHD', 'Gene', '6392', (240, 244)) ('SDXs', 'Chemical', '-', (41, 45)) ('men', 'Species', '9606', (60, 63)) ('mutations', 'Var', (179, 188)) ('SDHC', 'Gene', (204, 208)) ('SDHB', 'Gene', (174, 178)) ('SDHD', 'Gene', (240, 244)) ('SDHC', 'Gene', '6391', (204, 208)) 57980 27867439 Table 2 shows the number and locations of paragangliomas in patients with SDHx mutations. ('paragangliomas', 'Disease', (42, 56)) ('SDHx', 'Gene', (74, 78)) ('paragangliomas', 'Disease', 'MESH:D010235', (42, 56)) ('paragangliomas', 'Phenotype', 'HP:0002668', (42, 56)) ('SDHx', 'Chemical', '-', (74, 78)) ('patients', 'Species', '9606', (60, 68)) ('paraganglioma', 'Phenotype', 'HP:0002668', (42, 55)) ('mutations', 'Var', (79, 88)) 57987 27867439 We compared HNP of patients with SDHB and SDHD mutations. ('SDHB', 'Gene', '6390', (33, 37)) ('patients', 'Species', '9606', (19, 27)) ('HNP', 'Phenotype', 'HP:0002864', (12, 15)) ('HNP', 'Chemical', '-', (12, 15)) ('SDHD', 'Gene', '6392', (42, 46)) ('mutations', 'Var', (47, 56)) ('SDHB', 'Gene', (33, 37)) ('SDHD', 'Gene', (42, 46)) ('HNP', 'Disease', (12, 15)) 57989 27867439 Patients with SDHD mutations more often had carotid paragangliomas located on the left side than on the right side as compared with SDHB mutations (25/31 vs. 4/11, p=0.006), but in both groups the prevalence of bilateral localization of carotid paragangliomas was similar (15/30 [50.0%] vs. 3/7 [42.9%], respectively, p=NS). ('carotid paragangliomas', 'Disease', (44, 66)) ('SDHB', 'Gene', (132, 136)) ('carotid paragangliomas', 'Disease', (237, 259)) ('carotid paragangliomas', 'Phenotype', 'HP:0100635', (237, 259)) ('mutations', 'Var', (19, 28)) ('SDHD', 'Gene', '6392', (14, 18)) ('paragangliomas', 'Phenotype', 'HP:0002668', (52, 66)) ('carotid paragangliomas', 'Disease', 'MESH:D002345', (44, 66)) ('Patients', 'Species', '9606', (0, 8)) ('paraganglioma', 'Phenotype', 'HP:0002668', (52, 65)) ('carotid paragangliomas', 'Disease', 'MESH:D002345', (237, 259)) ('carotid paragangliomas', 'Phenotype', 'HP:0100635', (44, 66)) ('paraganglioma', 'Phenotype', 'HP:0002668', (245, 258)) ('paragangliomas', 'Phenotype', 'HP:0002668', (245, 259)) ('SDHD', 'Gene', (14, 18)) ('SDHB', 'Gene', '6390', (132, 136)) 57990 27867439 No statistical difference between both groups of SDHx mutations in the Shamblin classification was found (Figure 3). ('SDHx', 'Gene', (49, 53)) ('mutations', 'Var', (54, 63)) ('SDHx', 'Chemical', '-', (49, 53)) ('Shamblin classification', 'Disease', (71, 94)) 57991 27867439 No marked differences between the prevalence of vagal, jugular and tympanic paragangliomas in terms of SDHB and SDHD mutations were found. ('mutations', 'Var', (117, 126)) ('SDHB', 'Gene', (103, 107)) ('tympanic paraganglioma', 'Phenotype', 'HP:0006715', (67, 89)) ('jugular', 'Disease', (55, 62)) ('tympanic paragangliomas', 'Disease', (67, 90)) ('SDHD', 'Gene', (112, 116)) ('SDHD', 'Gene', '6392', (112, 116)) ('tympanic paragangliomas', 'Disease', 'MESH:D010235', (67, 90)) ('paraganglioma', 'Phenotype', 'HP:0002668', (76, 89)) ('paragangliomas', 'Phenotype', 'HP:0002668', (76, 90)) ('SDHB', 'Gene', '6390', (103, 107)) 57992 27867439 The comparison of patients with SDHB and SDHD mutations is shown in Table 3. ('SDHB', 'Gene', '6390', (32, 36)) ('mutations', 'Var', (46, 55)) ('SDHB', 'Gene', (32, 36)) ('SDHD', 'Gene', '6392', (41, 45)) ('patients', 'Species', '9606', (18, 26)) ('SDHD', 'Gene', (41, 45)) 57994 27867439 Patients with SDHD mutations statistically more often revealed bilateral localization of HNP, 25/31 (80.6%) vs. 5/11 (45.5%) with SDHB, p=0.03. ('revealed', 'Reg', (54, 62)) ('HNP', 'Disease', (89, 92)) ('SDHB', 'Gene', '6390', (130, 134)) ('mutations', 'Var', (19, 28)) ('SDHD', 'Gene', '6392', (14, 18)) ('HNP', 'Phenotype', 'HP:0002864', (89, 92)) ('Patients', 'Species', '9606', (0, 8)) ('HNP', 'Chemical', '-', (89, 92)) ('SDHB', 'Gene', (130, 134)) ('SDHD', 'Gene', (14, 18)) 57995 27867439 Out of 72 patients with SDHx mutations, 7 patients (4 with SDHB and 3 with SDHD gene mutations) had a malignant disease with distant metastases to bones, liver, lungs and lymph nodes, and 6 of them had head and neck paragangliomas (Figure 4A-4D). ('malignant disease', 'Disease', 'MESH:D009369', (102, 119)) ('paragangliomas', 'Phenotype', 'HP:0002668', (216, 230)) ('paraganglioma', 'Phenotype', 'HP:0002668', (216, 229)) ('metastases', 'Disease', 'MESH:D009362', (133, 143)) ('mutations', 'Var', (29, 38)) ('malignant disease', 'Disease', (102, 119)) ('SDHD', 'Gene', '6392', (75, 79)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (202, 230)) ('SDHx', 'Gene', (24, 28)) ('SDHD', 'Gene', (75, 79)) ('metastases', 'Disease', (133, 143)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (211, 230)) ('SDHx', 'Chemical', '-', (24, 28)) ('SDHB and 3', 'Gene', '6390', (59, 69)) ('patients', 'Species', '9606', (10, 18)) ('patients', 'Species', '9606', (42, 50)) ('neck paragangliomas', 'Disease', (211, 230)) 57997 27867439 Among 72 patients with confirmed SDHx mutations we found HNP in 44 (61.1%) patients. ('patients', 'Species', '9606', (9, 17)) ('SDHx', 'Chemical', '-', (33, 37)) ('HNP', 'Disease', (57, 60)) ('patients', 'Species', '9606', (75, 83)) ('HNP', 'Phenotype', 'HP:0002864', (57, 60)) ('HNP', 'Chemical', '-', (57, 60)) ('mutations', 'Var', (38, 47)) ('SDHx', 'Gene', (33, 37)) 58005 27867439 The average age of patients in all group was 44+-14.26 yrs, in groups of SDHB and SDHD mutations the mean age was similar. ('patients', 'Species', '9606', (19, 27)) ('SDHD', 'Gene', '6392', (82, 86)) ('SDHD', 'Gene', (82, 86)) ('SDHB', 'Gene', '6390', (73, 77)) ('mutations', 'Var', (87, 96)) ('SDHB', 'Gene', (73, 77)) 58006 27867439 Head and neck paragangliomas were statistically more prevalent among SDHD mutation carriers (72.1%) compared with SDHB mutation carriers (43.5%), like in other studies. ('mutation', 'Var', (74, 82)) ('SDHB', 'Gene', '6390', (114, 118)) ('Head and neck paragangliomas', 'Phenotype', 'HP:0002864', (0, 28)) ('SDHB', 'Gene', (114, 118)) ('paraganglioma', 'Phenotype', 'HP:0002668', (14, 27)) ('prevalent', 'Reg', (53, 62)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (9, 28)) ('paragangliomas', 'Phenotype', 'HP:0002668', (14, 28)) ('SDHD', 'Gene', '6392', (69, 73)) ('neck paragangliomas', 'Disease', (9, 28)) ('SDHD', 'Gene', (69, 73)) 58008 27867439 In our study, carotid paragangliomas significantly more commonly occurred in patients with SDHD mutations and were more often located on the left side. ('paragangliomas', 'Phenotype', 'HP:0002668', (22, 36)) ('carotid paragangliomas', 'Disease', (14, 36)) ('carotid paragangliomas', 'Phenotype', 'HP:0100635', (14, 36)) ('more', 'PosReg', (51, 55)) ('SDHD', 'Gene', (91, 95)) ('SDHD', 'Gene', '6392', (91, 95)) ('patients', 'Species', '9606', (77, 85)) ('carotid paragangliomas', 'Disease', 'MESH:D002345', (14, 36)) ('occurred', 'Reg', (65, 73)) ('paraganglioma', 'Phenotype', 'HP:0002668', (22, 35)) ('mutations', 'Var', (96, 105)) 58010 27867439 Morbidity related to surgical resection (postoperative neurovascular complications) for Shamblin type III carotid body tumors is higher than for type I and II. ('tumors', 'Phenotype', 'HP:0002664', (119, 125)) ('type III carotid body tumors', 'Disease', 'MESH:D002345', (97, 125)) ('postoperative neurovascular complications', 'Disease', (41, 82)) ('Shamblin', 'Var', (88, 96)) ('type III carotid body tumors', 'Disease', (97, 125)) ('postoperative neurovascular complications', 'Disease', 'MESH:D011183', (41, 82)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('carotid body tumors', 'Phenotype', 'HP:0002668', (106, 125)) 58019 27867439 In our study, patients with SDHD mutation significantly more commonly had multifocal paragangliomas than patients with SDHB mutations, as in the study by Neumann, 26 patients out of 31 with SDHD mutations in the present study had multifocal paragangliomas compared with 6 out of 11 patients with SDHB mutations. ('SDHD', 'Gene', (28, 32)) ('multifocal paragangliomas', 'Disease', (230, 255)) ('SDHB', 'Gene', (119, 123)) ('multifocal paragangliomas', 'Disease', 'None', (230, 255)) ('patients', 'Species', '9606', (14, 22)) ('SDHD', 'Gene', '6392', (190, 194)) ('patients', 'Species', '9606', (282, 290)) ('paraganglioma', 'Phenotype', 'HP:0002668', (85, 98)) ('paragangliomas', 'Phenotype', 'HP:0002668', (85, 99)) ('mutation', 'Var', (33, 41)) ('patients', 'Species', '9606', (105, 113)) ('SDHD', 'Gene', (190, 194)) ('mutations', 'Var', (195, 204)) ('SDHD', 'Gene', '6392', (28, 32)) ('SDHB', 'Gene', '6390', (296, 300)) ('multifocal paragangliomas', 'Disease', (74, 99)) ('multifocal paragangliomas', 'Disease', 'None', (74, 99)) ('SDHB', 'Gene', '6390', (119, 123)) ('paraganglioma', 'Phenotype', 'HP:0002668', (241, 254)) ('paragangliomas', 'Phenotype', 'HP:0002668', (241, 255)) ('patients', 'Species', '9606', (166, 174)) ('SDHB', 'Gene', (296, 300)) 58028 27867439 Patients with SDHD mutations are characterized by higher frequency of head and neck paragangliomas than patients with SDHB mutations which is mainly caused by a higher frequency of carotid body tumors in patients with SDHD mutations. ('neck paragangliomas', 'Disease', 'MESH:D010235', (79, 98)) ('SDHD', 'Gene', (218, 222)) ('patients', 'Species', '9606', (204, 212)) ('SDHB', 'Gene', '6390', (118, 122)) ('Patients', 'Species', '9606', (0, 8)) ('tumors', 'Phenotype', 'HP:0002664', (194, 200)) ('paraganglioma', 'Phenotype', 'HP:0002668', (84, 97)) ('SDHD', 'Gene', '6392', (14, 18)) ('paragangliomas', 'Phenotype', 'HP:0002668', (84, 98)) ('carotid body tumors', 'Disease', 'MESH:D002345', (181, 200)) ('carotid body tumors', 'Disease', (181, 200)) ('SDHB', 'Gene', (118, 122)) ('tumor', 'Phenotype', 'HP:0002664', (194, 199)) ('neck paragangliomas', 'Disease', (79, 98)) ('higher frequency of head', 'Phenotype', 'HP:0000256', (50, 74)) ('SDHD', 'Gene', (14, 18)) ('patients', 'Species', '9606', (104, 112)) ('carotid body tumors', 'Phenotype', 'HP:0002668', (181, 200)) ('SDHD', 'Gene', '6392', (218, 222)) ('mutations', 'Var', (19, 28)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (70, 98)) 58046 27316501 During the hospital admissions, she was found to have polymorphic VT requiring DC version three times in a span of 2 months. ('VT', 'Disease', 'MESH:D017180', (66, 68)) ('DC version', 'MPA', (79, 89)) ('polymorphic', 'Var', (54, 65)) 58070 27316501 The mechanism of QT prolongation is not clear; however, alpha-adrenergic stimulation can prolong the QT by prolonging the action potential duration. ('prolonging', 'PosReg', (107, 117)) ('alpha-adrenergic stimulation', 'Var', (56, 84)) ('prolong', 'PosReg', (89, 96)) ('QT prolongation', 'Disease', 'MESH:D008133', (17, 32)) ('QT prolongation', 'Disease', (17, 32)) ('action potential duration', 'MPA', (122, 147)) 58131 21614574 Remarkably, the presence of a carotid body tumor was an independent predictor of increased daytime sleepiness (beta = 0.287, P = 0.029). ('daytime sleepiness', 'Disease', 'MESH:D012893', (91, 109)) ('increased daytime sleepiness', 'Phenotype', 'HP:0002189', (81, 109)) ('carotid body tumor', 'Disease', (30, 48)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('daytime sleepiness', 'Disease', (91, 109)) ('carotid body tumor', 'Disease', 'MESH:D002345', (30, 48)) ('presence', 'Var', (16, 24)) ('carotid body tumor', 'Phenotype', 'HP:0002668', (30, 48)) ('increased', 'PosReg', (81, 90)) ('daytime sleepiness', 'Phenotype', 'HP:0002189', (91, 109)) 58138 21614574 Familial paraganglioma syndromes are associated with germline mutations in the genes encoding the B, C, and D subunits of mitochondrial complex II succinate dehydrogenase (SDH). ('germline mutations', 'Var', (53, 71)) ('Familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (0, 32)) ('SDH', 'Gene', (172, 175)) ('associated', 'Reg', (37, 47)) ('Familial paraganglioma syndromes', 'Disease', (0, 32)) ('paraganglioma', 'Phenotype', 'HP:0002668', (9, 22)) ('SDH', 'Gene', '6390', (172, 175)) 58140 21614574 Among these three genes, mutations in SDH-D subunit are the most prominent cause of HNP. ('cause', 'Reg', (75, 80)) ('SDH', 'Gene', '6390', (38, 41)) ('HNP', 'Disease', (84, 87)) ('mutations', 'Var', (25, 34)) ('HNP', 'Phenotype', 'HP:0002864', (84, 87)) ('SDH', 'Gene', (38, 41)) 58262 33381322 Through genetic testing, the endocrinologist diagnosed the patient with hereditary paraganglioma-pheochromocytoma associated with mutation in SDHD gene. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (97, 113)) ('mutation', 'Var', (130, 138)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('patient', 'Species', '9606', (59, 66)) ('hereditary paraganglioma-pheochromocytoma', 'Disease', 'MESH:D010673', (72, 113)) ('hereditary paraganglioma-pheochromocytoma', 'Disease', (72, 113)) ('associated', 'Reg', (114, 124)) ('SDHD', 'Gene', '6392', (142, 146)) ('SDHD', 'Gene', (142, 146)) 58277 33381322 Presurgery hospital medications included PO phenoxybenzamine 30 mg BID prior to surgery, metoprolol 75 mg BID, IV fluids 200 ml/hr, oxycodone 5 mg/10 mg, and lorazepam 2 mg PO once as needed. ('PO phenoxybenzamine', 'Var', (41, 60)) ('BID', 'Gene', '637', (67, 70)) ('BID', 'Gene', (67, 70)) ('BID', 'Gene', '637', (106, 109)) ('metoprolol', 'Chemical', 'MESH:D008790', (89, 99)) ('oxycodone', 'Chemical', 'MESH:D010098', (132, 141)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (44, 60)) ('lorazepam', 'Chemical', 'MESH:D008140', (158, 167)) ('BID', 'Gene', (106, 109)) 58278 33381322 Twenty-four hours prior to surgery the patient's blood pressure and heart rate ranges were (113-148)/(68-94) mmHg and (65-98) bpm, respectively. ('heart', 'MPA', (68, 73)) ('patient', 'Species', '9606', (39, 46)) ('113-148', 'Var', (92, 99)) 58323 31362359 Such tumors also have a relationship with various other tumors, such as neuroblastomas, that also originate from the adrenal medulla and extra-adrenal sympathetic tissues as well as tumors co-occurring in various hereditary tumor syndromes, for instance, medullary thyroid carcinoma in MEN2, renal cell carcinoma in VHL disease, and gastrointestinal stromal tumors (GIST) in the context of succinate dehydrogenase subunit gene (collectively called SDHx) mutations. ('tumors', 'Disease', 'MESH:D009369', (5, 11)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (292, 312)) ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('tumors', 'Phenotype', 'HP:0002664', (182, 188)) ('VHL disease', 'Disease', (316, 327)) ('neuroblastomas', 'Disease', (72, 86)) ('tumor', 'Phenotype', 'HP:0002664', (224, 229)) ('tumor', 'Phenotype', 'HP:0002664', (358, 363)) ('tumors', 'Disease', (56, 62)) ('hereditary tumor', 'Disease', (213, 229)) ('tumors', 'Disease', (358, 364)) ('neuroblastomas', 'Disease', 'MESH:D009447', (72, 86)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (333, 364)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (333, 364)) ('hereditary tumor', 'Disease', 'MESH:D009386', (213, 229)) ('tumors', 'Disease', (182, 188)) ('tumor', 'Phenotype', 'HP:0002664', (5, 10)) ('tumors', 'Disease', 'MESH:D009369', (56, 62)) ('tumors', 'Disease', 'MESH:D009369', (358, 364)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (255, 282)) ('MEN', 'Species', '9606', (286, 289)) ('tumors', 'Phenotype', 'HP:0002664', (5, 11)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (265, 282)) ('succinate dehydrogenase', 'Gene', (390, 413)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (292, 312)) ('thyroid carcinoma', 'Disease', (265, 282)) ('tumors', 'Disease', 'MESH:D009369', (182, 188)) ('SDHx', 'Chemical', '-', (448, 452)) ('carcinoma', 'Phenotype', 'HP:0030731', (303, 312)) ('gastrointestinal stromal tumors', 'Disease', (333, 364)) ('tumors', 'Disease', (5, 11)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (265, 282)) ('GIST', 'Phenotype', 'HP:0100723', (366, 370)) ('tumors', 'Phenotype', 'HP:0002664', (56, 62)) ('carcinoma', 'Phenotype', 'HP:0030731', (273, 282)) ('tumors', 'Phenotype', 'HP:0002664', (358, 364)) ('VHL disease', 'Disease', 'MESH:D006623', (316, 327)) ('succinate dehydrogenase', 'Gene', '6390', (390, 413)) ('neuroblastomas', 'Phenotype', 'HP:0003006', (72, 86)) ('mutations', 'Var', (454, 463)) ('renal cell carcinoma', 'Disease', (292, 312)) 58339 31362359 Cluster 1 is characterized by the pseudohypoxia pathway and includes, among others, PCC/PGL with VHL and SDHx mutations. ('SDHx', 'Chemical', '-', (105, 109)) ('PGL', 'Phenotype', 'HP:0002668', (88, 91)) ('VHL', 'Gene', '7428', (97, 100)) ('mutations', 'Var', (110, 119)) ('SDHx', 'Gene', (105, 109)) ('PCC', 'Phenotype', 'HP:0002666', (84, 87)) ('pseudohypoxia pathway', 'Pathway', (34, 55)) ('VHL', 'Gene', (97, 100)) 58340 31362359 Cluster 2 is characterized by activation of kinase signaling pathways and includes, among others, PCC/PGL with RET and NF1 gene mutations. ('mutations', 'Var', (128, 137)) ('kinase signaling pathways', 'Pathway', (44, 69)) ('PGL', 'Phenotype', 'HP:0002668', (102, 105)) ('activation', 'PosReg', (30, 40)) ('NF1', 'Gene', (119, 122)) ('PCC', 'Phenotype', 'HP:0002666', (98, 101)) ('NF1', 'Gene', '4763', (119, 122)) ('RET', 'Gene', (111, 114)) 58341 31362359 With the identification of new somatic drivers, including gene fusions, a new cluster 3 has been recognized, representing tumors with Wnt signaling activation. ('tumors', 'Disease', (122, 128)) ('tumors', 'Disease', 'MESH:D009369', (122, 128)) ('gene fusions', 'Var', (58, 70)) ('tumor', 'Phenotype', 'HP:0002664', (122, 127)) ('tumors', 'Phenotype', 'HP:0002664', (122, 128)) 58345 31362359 Furthermore, "disease modifying genes" have been recognized, including somatic mutations in ATRX, which mostly co-exist with mutations in SDHB or IDH1/2, with a suggested synergistic effect on tumorigenesis and tumor progression. ('SDHB', 'Gene', (138, 142)) ('mutations', 'Var', (125, 134)) ('ATRX', 'Gene', (92, 96)) ('IDH1/2', 'Gene', (146, 152)) ('tumor', 'Disease', 'MESH:D009369', (211, 216)) ('ATRX', 'Gene', '546', (92, 96)) ('tumor', 'Disease', 'MESH:D009369', (193, 198)) ('tumor', 'Phenotype', 'HP:0002664', (193, 198)) ('tumor', 'Phenotype', 'HP:0002664', (211, 216)) ('tumor', 'Disease', (211, 216)) ('IDH1/2', 'Gene', '3417;3418', (146, 152)) ('tumor', 'Disease', (193, 198)) ('SDHB', 'Gene', '6390', (138, 142)) ('mutations', 'Var', (79, 88)) 58346 31362359 We will focus on the driver mutations in Clusters 1 and 2, discuss the most common members with special attention to the SDHx family, and highlight some recently identified gene mutations, as seen in Table 1. ('SDHx', 'Chemical', '-', (121, 125)) ('mutations', 'Var', (178, 187)) ('mutations', 'Var', (28, 37)) 58347 31362359 This cluster represents germline or somatic gene mutations resulting in a dysfunctional hypoxic (pseudo-hypoxic) response with a central role for hypoxia inducible factor (HIF)1 alpha and HIF2 alpha, which are the main components of the response to low oxygen levels. ('mutations', 'Var', (49, 58)) ('HIF2 alpha', 'Gene', '2034', (188, 198)) ('resulting in', 'Reg', (59, 71)) ('oxygen', 'Chemical', 'MESH:D010100', (253, 259)) ('dysfunctional hypoxic', 'Disease', (74, 95)) ('HIF2 alpha', 'Gene', (188, 198)) ('dysfunctional hypoxic', 'Disease', 'MESH:D000860', (74, 95)) ('hypoxia inducible factor (HIF)1 alpha', 'Gene', '3091', (146, 183)) ('low oxygen levels', 'Phenotype', 'HP:0012418', (249, 266)) 58350 31362359 The VHL/EPAS1-related subgroup includes mutations in genes directly involved in activation of the HIF signaling pathway such as VHL germline (g), somatic (s), EPAS1/HIF2 alpha (g,s) and EGLN1/2 (g). ('EPAS1', 'Gene', (8, 13)) ('VHL', 'Gene', '7428', (128, 131)) ('EGLN1/2', 'Gene', '54583;112398', (186, 193)) ('VHL', 'Gene', '7428', (4, 7)) ('EGLN1/2', 'Gene', (186, 193)) ('HIF signaling pathway', 'Pathway', (98, 119)) ('EPAS1', 'Gene', '2034', (159, 164)) ('mutations', 'Var', (40, 49)) ('HIF2 alpha', 'Gene', '2034', (165, 175)) ('VHL', 'Gene', (4, 7)) ('EPAS1', 'Gene', (159, 164)) ('HIF2 alpha', 'Gene', (165, 175)) ('EPAS1', 'Gene', '2034', (8, 13)) ('VHL', 'Gene', (128, 131)) 58351 31362359 The TCA-cycle-related subgroup includes mutations in genes encoding energy metabolism enzymes such as SDHx (g), FH (g), MDH2 (g) and IDH1/2 (s). ('MDH2', 'Gene', '4191', (120, 124)) ('MDH2', 'Gene', (120, 124)) ('SDHx', 'Chemical', '-', (102, 106)) ('SDHx', 'Gene', (102, 106)) ('TCA', 'Chemical', 'MESH:D014238', (4, 7)) ('mutations', 'Var', (40, 49)) ('IDH1/2', 'Gene', (133, 139)) ('TCA-cycle-related', 'Disease', (4, 21)) ('IDH1/2', 'Gene', '3417;3418', (133, 139)) 58352 31362359 Inactivating mutations lead to an accumulation of TCA metabolites causing epigenetic changes in HIF stability and are associated with a hypermethylated phenotype. ('epigenetic changes', 'MPA', (74, 92)) ('accumulation', 'PosReg', (34, 46)) ('Inactivating mutations', 'Var', (0, 22)) ('associated', 'Reg', (118, 128)) ('TCA metabolites', 'MPA', (50, 65)) ('TCA', 'Chemical', 'MESH:D014238', (50, 53)) 58355 31362359 The VHL gene is known to cause von Hippel-Lindau (VHL) disease, an autosomal dominant familial tumor syndrome characterized by multiple benign and malignant tumors including retinal and central nervous system hemangioblastomas, renal cysts, clear cell renal cell carcinomas (RCC), pancreatic cysts, pancreatic neuroendocrine tumors, endolymphatic sac tumors, and epididymal cystadenomas. ('endolymphatic sac tumors', 'Disease', 'MESH:D036821', (333, 357)) ('renal cysts', 'Phenotype', 'HP:0000107', (228, 239)) ('tumors', 'Phenotype', 'HP:0002664', (325, 331)) ('clear cell renal cell carcinomas', 'Phenotype', 'HP:0006770', (241, 273)) ('carcinoma', 'Phenotype', 'HP:0030731', (263, 272)) ('pancreatic cysts', 'Disease', (281, 297)) ('carcinomas', 'Phenotype', 'HP:0030731', (263, 273)) ('renal cysts', 'Disease', 'MESH:D007674', (228, 239)) ('clear cell renal cell carcinomas', 'Disease', (241, 273)) ('epididymal cystadenomas', 'Disease', (363, 386)) ('pancreatic cysts', 'Phenotype', 'HP:0001737', (281, 297)) ('cause', 'Reg', (25, 30)) ('malignant tumors', 'Disease', 'MESH:D018198', (147, 163)) ('retinal and central nervous system hemangioblastomas', 'Disease', 'MESH:D018325', (174, 226)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('tumor', 'Phenotype', 'HP:0002664', (157, 162)) ('tumor', 'Phenotype', 'HP:0002664', (325, 330)) ('RCC', 'Disease', 'MESH:C538614', (275, 278)) ('tumors', 'Phenotype', 'HP:0002664', (157, 163)) ('autosomal dominant familial tumor syndrome', 'Disease', (67, 109)) ('epididymal cystadenomas', 'Disease', 'MESH:D003537', (363, 386)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (252, 273)) ('malignant tumors', 'Disease', (147, 163)) ('VHL', 'Gene', (4, 7)) ('endolymphatic sac tumors', 'Phenotype', 'HP:0030393', (333, 357)) ('epididymal cystadenomas', 'Phenotype', 'HP:0030424', (363, 386)) ('VHL', 'Gene', (50, 53)) ('autosomal dominant familial tumor syndrome', 'Disease', 'MESH:D030342', (67, 109)) ('tumors', 'Phenotype', 'HP:0002664', (351, 357)) ('pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (299, 331)) ('clear cell renal cell carcinomas', 'Disease', 'MESH:C538614', (241, 273)) ('von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (31, 62)) ('pancreatic cysts', 'Disease', 'MESH:D010181', (281, 297)) ('gene', 'Var', (8, 12)) ('VHL', 'Gene', '7428', (4, 7)) ('endolymphatic sac tumors', 'Disease', (333, 357)) ('nervous system hemangioblastomas', 'Phenotype', 'HP:0006880', (194, 226)) ('tumor', 'Phenotype', 'HP:0002664', (351, 356)) ('pancreatic neuroendocrine tumors', 'Disease', (299, 331)) ('VHL', 'Gene', '7428', (50, 53)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (252, 272)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (310, 331)) ('renal cysts', 'Disease', (228, 239)) ('RCC', 'Disease', (275, 278)) ('RCC', 'Phenotype', 'HP:0005584', (275, 278)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (315, 330)) 58356 31362359 VHL disease shows a genotype-phenotype correlation; VHL type 2 is characterized by missense mutations and is linked to PCC, which is observed in 10-26% of VHL patients. ('VHL disease', 'Disease', (0, 11)) ('VHL', 'Gene', '7428', (52, 55)) ('VHL', 'Gene', '7428', (155, 158)) ('PCC', 'Phenotype', 'HP:0002666', (119, 122)) ('missense mutations', 'Var', (83, 101)) ('PCC', 'Disease', (119, 122)) ('VHL', 'Gene', (0, 3)) ('VHL disease', 'Disease', 'MESH:D006623', (0, 11)) ('VHL', 'Gene', (52, 55)) ('linked', 'Reg', (109, 115)) ('VHL', 'Gene', '7428', (0, 3)) ('patients', 'Species', '9606', (159, 167)) ('VHL', 'Gene', (155, 158)) 58357 31362359 Germline mutations in VHL account for 5-10% of hereditary PCC/PGL, and somatic VHL mutations have been found in about 10% of sporadic PCC/PGL. ('Germline mutations', 'Var', (0, 18)) ('VHL', 'Gene', '7428', (79, 82)) ('VHL', 'Gene', (22, 25)) ('VHL', 'Gene', '7428', (22, 25)) ('PGL', 'Phenotype', 'HP:0002668', (62, 65)) ('PCC', 'Phenotype', 'HP:0002666', (58, 61)) ('PGL', 'Phenotype', 'HP:0002668', (138, 141)) ('PCC/PGL', 'Disease', (58, 65)) ('PCC', 'Phenotype', 'HP:0002666', (134, 137)) ('VHL', 'Gene', (79, 82)) 58358 31362359 The EPAS1/HIF2 alpha gene encodes for HIF2 alpha and mutations lead to its reduced degradation and stabilization. ('degradation', 'MPA', (83, 94)) ('EPAS1', 'Gene', '2034', (4, 9)) ('HIF2 alpha', 'Gene', '2034', (38, 48)) ('EPAS1', 'Gene', (4, 9)) ('stabilization', 'MPA', (99, 112)) ('mutations', 'Var', (53, 62)) ('reduced', 'NegReg', (75, 82)) ('HIF2 alpha', 'Gene', '2034', (10, 20)) ('HIF2 alpha', 'Gene', (38, 48)) ('HIF2 alpha', 'Gene', (10, 20)) 58359 31362359 Somatic EPAS1/HIF2 alpha mutations have been found in 5-10% of PCC/PGL. ('HIF2 alpha', 'Gene', (14, 24)) ('mutations', 'Var', (25, 34)) ('EPAS1', 'Gene', (8, 13)) ('HIF2 alpha', 'Gene', '2034', (14, 24)) ('PCC/PGL', 'Disease', (63, 70)) ('PGL', 'Phenotype', 'HP:0002668', (67, 70)) ('PCC', 'Phenotype', 'HP:0002666', (63, 66)) ('EPAS1', 'Gene', '2034', (8, 13)) ('found', 'Reg', (45, 50)) 58360 31362359 EPAS1/HIF2 alpha mutations are also linked to polycythemia and somatostinoma. ('EPAS1', 'Gene', '2034', (0, 5)) ('EPAS1', 'Gene', (0, 5)) ('HIF2 alpha', 'Gene', '2034', (6, 16)) ('linked', 'Reg', (36, 42)) ('HIF2 alpha', 'Gene', (6, 16)) ('mutations', 'Var', (17, 26)) ('polycythemia and somatostinoma', 'Disease', 'MESH:D011086', (46, 76)) ('polycythemia', 'Phenotype', 'HP:0001901', (46, 58)) 58364 31362359 Mutations in the SDHx family are currently the most common germline mutations found in hereditary PCC/PGL and account for about 20-30% of hereditary cases. ('PGL', 'Phenotype', 'HP:0002668', (102, 105)) ('SDHx', 'Chemical', '-', (17, 21)) ('SDHx', 'Gene', (17, 21)) ('PCC', 'Phenotype', 'HP:0002666', (98, 101)) ('Mutations', 'Var', (0, 9)) ('PCC/PGL', 'Disease', (98, 105)) 58365 31362359 SDHx-related PCC/PGL are caused by mutations in five genes of the SDHx family, SDHA, SDHB, SDHC, SDHD, and SDHAF2, which encode the corresponding proteins. ('SDHA', 'Gene', '6389', (107, 111)) ('SDHx-related PCC/PGL', 'Disease', (0, 20)) ('SDHC', 'Gene', '6391', (91, 95)) ('PCC/PGL', 'Disease', (13, 20)) ('SDHD', 'Gene', (97, 101)) ('SDHA', 'Gene', (79, 83)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHx', 'Gene', (66, 70)) ('SDHA', 'Gene', '6389', (79, 83)) ('caused by', 'Reg', (25, 34)) ('SDHC', 'Gene', (91, 95)) ('SDHB', 'Gene', (85, 89)) ('PCC', 'Phenotype', 'HP:0002666', (13, 16)) ('SDHx', 'Chemical', '-', (66, 70)) ('SDHAF2', 'Gene', '54949', (107, 113)) ('SDHAF2', 'Gene', (107, 113)) ('PGL', 'Phenotype', 'HP:0002668', (17, 20)) ('SDHA', 'Gene', (107, 111)) ('SDHx', 'Chemical', '-', (0, 4)) ('SDHD', 'Gene', '6392', (97, 101)) ('mutations', 'Var', (35, 44)) 58370 31362359 Mutations in the SDHx family are predominantly linked to extra-adrenal PGLs. ('extra-adrenal PGLs', 'Disease', (57, 75)) ('SDHx', 'Chemical', '-', (17, 21)) ('SDHx', 'Gene', (17, 21)) ('Mutations', 'Var', (0, 9)) ('linked', 'Reg', (47, 53)) ('PGL', 'Phenotype', 'HP:0002668', (71, 74)) 58371 31362359 SDHB mutations are associated with abdominal and thoracic PGL and show a 30-70% risk of metastasis. ('associated', 'Reg', (19, 29)) ('metastasis', 'CPA', (88, 98)) ('PGL', 'Phenotype', 'HP:0002668', (58, 61)) ('mutations', 'Var', (5, 14)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) 58372 31362359 SDHD and SDHA mutations are mostly found in abdominal, thoracic, head, and neck PGLs. ('abdominal', 'Disease', (44, 53)) ('SDHA', 'Gene', '6389', (9, 13)) ('SDHD', 'Gene', '6392', (0, 4)) ('SDHA', 'Gene', (9, 13)) ('head', 'Disease', (65, 69)) ('SDHD', 'Gene', (0, 4)) ('mutations', 'Var', (14, 23)) ('PGL', 'Phenotype', 'HP:0002668', (80, 83)) 58373 31362359 SDHC and SDHAF2 mutations are associated with head and neck PGLs. ('associated', 'Reg', (30, 40)) ('PGL', 'Phenotype', 'HP:0002668', (60, 63)) ('SDHC', 'Gene', (0, 4)) ('SDHAF2', 'Gene', '54949', (9, 15)) ('mutations', 'Var', (16, 25)) ('SDHC', 'Gene', '6391', (0, 4)) ('SDHAF2', 'Gene', (9, 15)) 58374 31362359 Mutations in the SDHD and SDHAF2 genes, both located on chromosome 11, show a parent-of-origin-dependent inheritance effect in which mutations almost exclusively cause disease after paternal transmission. ('SDHD', 'Gene', '6392', (17, 21)) ('Mutations', 'Var', (0, 9)) ('SDHD', 'Gene', (17, 21)) ('mutations', 'Var', (133, 142)) ('cause', 'Reg', (162, 167)) ('SDHAF2', 'Gene', '54949', (26, 32)) ('SDHAF2', 'Gene', (26, 32)) ('disease', 'Disease', (168, 175)) 58375 31362359 Mutations in the SDHx family have also been associated with other tumors such as SDH-deficient GIST, SDH-deficient RCC, and SDH-deficient pituitary adenoma. ('associated', 'Reg', (44, 54)) ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('RCC', 'Phenotype', 'HP:0005584', (115, 118)) ('GIST', 'Phenotype', 'HP:0100723', (95, 99)) ('SDHx', 'Chemical', '-', (17, 21)) ('deficient pituitary adenoma', 'Phenotype', 'HP:0010627', (128, 155)) ('tumors', 'Disease', (66, 72)) ('SDHx', 'Gene', (17, 21)) ('tumors', 'Disease', 'MESH:D009369', (66, 72)) ('tumors', 'Phenotype', 'HP:0002664', (66, 72)) ('SDH-deficient GIST, SDH-deficient RCC', 'Disease', 'MESH:C538614', (81, 118)) ('Mutations', 'Var', (0, 9)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (138, 155)) ('SDH-deficient pituitary adenoma', 'Disease', (124, 155)) ('SDH-deficient pituitary adenoma', 'Disease', 'MESH:D010911', (124, 155)) 58376 31362359 If the SDH complex becomes instable by dysfunction of any of the components, the SDHB subunit is degraded in the cytoplasm. ('degraded', 'NegReg', (97, 105)) ('SDH', 'Gene', (7, 10)) ('SDHB', 'Gene', '6390', (81, 85)) ('SDH', 'Gene', '6390', (81, 84)) ('SDHB', 'Gene', (81, 85)) ('SDH', 'Gene', '6390', (7, 10)) ('dysfunction', 'Var', (39, 50)) ('SDH', 'Gene', (81, 84)) 58377 31362359 The loss of SDHB expression can be detected by SDHB protein immunohistochemistry (IHC); this can be used to detect tumors with mutations in one of the five genes. ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('SDHB', 'Gene', '6390', (12, 16)) ('expression', 'MPA', (17, 27)) ('SDHB', 'Gene', (12, 16)) ('SDHB', 'Gene', '6390', (47, 51)) ('SDHB', 'Gene', (47, 51)) ('tumors', 'Disease', (115, 121)) ('tumors', 'Disease', 'MESH:D009369', (115, 121)) ('tumors', 'Phenotype', 'HP:0002664', (115, 121)) ('mutations', 'Var', (127, 136)) ('loss', 'NegReg', (4, 8)) 58378 31362359 In addition, loss of SDHA IHC can detect tumors with SDHA germline mutations. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('SDHA', 'Gene', (21, 25)) ('tumors', 'Phenotype', 'HP:0002664', (41, 47)) ('tumors', 'Disease', (41, 47)) ('SDHA', 'Gene', '6389', (53, 57)) ('tumors', 'Disease', 'MESH:D009369', (41, 47)) ('loss', 'Var', (13, 17)) ('SDHA', 'Gene', '6389', (21, 25)) ('SDHA', 'Gene', (53, 57)) 58381 31362359 SDHB IHC positivity comprises granular cytoplasmatic staining with the same intensity as the internal positive control cells (non-tumoral cells, e.g., lymphocytes, endothelial cells, fibroblasts). ('tumor', 'Disease', 'MESH:D009369', (130, 135)) ('granular cytoplasmatic staining', 'MPA', (30, 61)) ('positivity', 'Var', (9, 19)) ('SDHB', 'Gene', '6390', (0, 4)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('tumor', 'Disease', (130, 135)) ('SDHB', 'Gene', (0, 4)) 58387 31362359 Mutant FH results in accumulation of fumarate leading to PHD inactivation and HIF stabilization. ('accumulation', 'PosReg', (21, 33)) ('PHD', 'Disease', 'MESH:D011547', (57, 60)) ('fumarate', 'Chemical', 'MESH:D005650', (37, 45)) ('PHD', 'Disease', (57, 60)) ('fumarate', 'MPA', (37, 45)) ('HIF stabilization', 'CPA', (78, 95)) ('Mutant', 'Var', (0, 6)) ('inactivation', 'NegReg', (61, 73)) 58388 31362359 Mutations in this gene have classically been associated with hereditary cutaneous and uterine leiomyomatosis and a specific variant of RCC, which is regarded as a separate entity by the WHO. ('leiomyomatosis', 'Disease', (94, 108)) ('uterine leiomyomatosis', 'Phenotype', 'HP:0000131', (86, 108)) ('RCC', 'Phenotype', 'HP:0005584', (135, 138)) ('RCC', 'Disease', 'MESH:C538614', (135, 138)) ('RCC', 'Disease', (135, 138)) ('associated', 'Reg', (45, 55)) ('Mutations', 'Var', (0, 9)) ('leiomyomatosis', 'Disease', 'MESH:D018231', (94, 108)) ('cutaneous and uterine leiomyomatosis', 'Phenotype', 'HP:0007620', (72, 108)) 58389 31362359 In addition, low tumor levels of 5-hmC (resembling those in SDHB-deficient tumors) and positive 2SC staining have been detected in tumors with FH mutations, suggestive of altered DNA methylation and protein succination, respectively. ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) ('SDHB-deficient tumors', 'Disease', (60, 81)) ('tumors', 'Disease', 'MESH:D009369', (75, 81)) ('low tumor', 'Disease', (13, 22)) ('mutations', 'Var', (146, 155)) ('SDHB-deficient tumors', 'Disease', 'MESH:D009369', (60, 81)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('tumors', 'Phenotype', 'HP:0002664', (131, 137)) ('tumors', 'Phenotype', 'HP:0002664', (75, 81)) ('tumors', 'Disease', (131, 137)) ('tumors', 'Disease', 'MESH:D009369', (131, 137)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('tumors', 'Disease', (75, 81)) ('altered', 'Reg', (171, 178)) ('low tumor', 'Disease', 'MESH:D009800', (13, 22)) 58393 31362359 Mutations result in the production of 2-hydroxyglutarate instead of alpha-ketoglutarate, and its accumulation activates the hypoxic pathway. ('2-hydroxyglutarate', 'MPA', (38, 56)) ('accumulation activates', 'PosReg', (97, 119)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (68, 87)) ('Mutations', 'Var', (0, 9)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (38, 56)) ('hypoxic pathway', 'Pathway', (124, 139)) 58394 31362359 Somatic IDH1 and IDH2 mutations are typically present in low-grade and secondary high-grade gliomas and have rarely been found in PGLs. ('IDH1', 'Gene', (8, 12)) ('low-grade', 'Disease', (57, 66)) ('IDH2', 'Gene', '3418', (17, 21)) ('PGL', 'Phenotype', 'HP:0002668', (130, 133)) ('IDH2', 'Gene', (17, 21)) ('gliomas', 'Phenotype', 'HP:0009733', (92, 99)) ('gliomas', 'Disease', (92, 99)) ('IDH1', 'Gene', '3417', (8, 12)) ('mutations', 'Var', (22, 31)) ('gliomas', 'Disease', 'MESH:D005910', (92, 99)) ('present', 'Reg', (46, 53)) 58396 31362359 The SLC25A11 gene encodes the mitochondrial 2-oxoglutarate/malate carrier and germline mutations have been identified in abdominal as well as head and neck PGLs and may be associated with metastases. ('2-oxoglutarate', 'Chemical', 'MESH:D007656', (44, 58)) ('identified', 'Reg', (107, 117)) ('metastases', 'Disease', 'MESH:D009362', (188, 198)) ('associated', 'Reg', (172, 182)) ('PGL', 'Phenotype', 'HP:0002668', (156, 159)) ('abdominal', 'Disease', (121, 130)) ('SLC25A11', 'Gene', '8402', (4, 12)) ('metastases', 'Disease', (188, 198)) ('malate', 'Chemical', 'MESH:C030298', (59, 65)) ('SLC25A11', 'Gene', (4, 12)) ('mutations', 'Var', (87, 96)) 58401 31362359 In addition, positive DLST immunostaining was detected in tumors with TCA-cycle or EPAS1 mutations. ('tumor', 'Phenotype', 'HP:0002664', (58, 63)) ('TCA-cycle', 'Gene', (70, 79)) ('DLST', 'Gene', (22, 26)) ('tumors', 'Disease', (58, 64)) ('tumors', 'Phenotype', 'HP:0002664', (58, 64)) ('EPAS1', 'Gene', '2034', (83, 88)) ('tumors', 'Disease', 'MESH:D009369', (58, 64)) ('EPAS1', 'Gene', (83, 88)) ('mutations', 'Var', (89, 98)) ('TCA', 'Chemical', 'MESH:D014238', (70, 73)) ('DLST', 'Gene', '1743', (22, 26)) 58402 31362359 It encompasses germline or somatic mutations in RET (g/s), NF1 (g/s), MAX (g/s), MEN1 (g), TMEM127 (g), H-RAS (s), and KIF1B (g/s). ('KIF1B', 'Gene', (119, 124)) ('RET', 'Gene', (48, 51)) ('KIF1B', 'Gene', '23095', (119, 124)) ('H-RAS', 'Gene', (104, 109)) ('TMEM127', 'Gene', (91, 98)) ('TMEM127', 'Gene', '55654', (91, 98)) ('H-RAS', 'Gene', '3265', (104, 109)) ('NF1', 'Gene', (59, 62)) ('MEN1', 'Gene', '4221', (81, 85)) ('MEN1', 'Gene', (81, 85)) ('NF1', 'Gene', '4763', (59, 62)) ('mutations', 'Var', (35, 44)) 58403 31362359 These mutations are associated with the activation of the RAS-RAF-ERK, PI3K-AKT-mTOR (RET, HRAS, NF1, TMEM127, KIF1B), and MYC-MAX (MAX) kinase signaling pathways. ('RAF', 'Gene', (62, 65)) ('HRAS', 'Gene', (91, 95)) ('NF1', 'Gene', (97, 100)) ('NF1', 'Gene', '4763', (97, 100)) ('mTOR', 'Gene', (80, 84)) ('mTOR', 'Gene', '2475', (80, 84)) ('KIF1B', 'Gene', (111, 116)) ('TMEM127', 'Gene', '55654', (102, 109)) ('activation', 'PosReg', (40, 50)) ('KIF1B', 'Gene', '23095', (111, 116)) ('ERK', 'Gene', '2048', (66, 69)) ('HRAS', 'Gene', '3265', (91, 95)) ('TMEM127', 'Gene', (102, 109)) ('RAF', 'Gene', '22882', (62, 65)) ('mutations', 'Var', (6, 15)) ('ERK', 'Gene', (66, 69)) 58404 31362359 Activating germline mutations in the RET gene cause the multiple endocrine neoplasia type 2 (MEN2) syndrome characterized by the development of PCC and medullary thyroid carcinoma. ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (162, 179)) ('Activating', 'PosReg', (0, 10)) ('RET', 'Gene', (37, 40)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (152, 179)) ('carcinoma', 'Phenotype', 'HP:0030731', (170, 179)) ('multiple endocrine neoplasia type 2 (MEN2) syndrome', 'Disease', 'MESH:D018813', (56, 107)) ('thyroid carcinoma', 'Disease', (162, 179)) ('neoplasia', 'Phenotype', 'HP:0002664', (75, 84)) ('PCC', 'Phenotype', 'HP:0002666', (144, 147)) ('germline mutations', 'Var', (11, 29)) ('cause', 'Reg', (46, 51)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (162, 179)) ('PCC', 'Disease', (144, 147)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (65, 84)) 58405 31362359 PCC occur in 40-50% of patients with MEN2 and the risk of PCC is associated with specific RET mutations. ('MEN', 'Species', '9606', (37, 40)) ('mutations', 'Var', (94, 103)) ('patients', 'Species', '9606', (23, 31)) ('PCC', 'Phenotype', 'HP:0002666', (58, 61)) ('PCC', 'Phenotype', 'HP:0002666', (0, 3)) ('PCC', 'Disease', (58, 61)) ('PCC', 'Disease', (0, 3)) 58407 31362359 Germline RET mutations have been detected in 5% of hereditary PCC/PGL and somatic mutations in about 5% of sporadic tumors. ('sporadic tumors', 'Disease', (107, 122)) ('tumors', 'Phenotype', 'HP:0002664', (116, 122)) ('detected', 'Reg', (33, 41)) ('PGL', 'Phenotype', 'HP:0002668', (66, 69)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('sporadic tumors', 'Disease', 'MESH:D009369', (107, 122)) ('PCC', 'Phenotype', 'HP:0002666', (62, 65)) ('mutations', 'Var', (13, 22)) ('PCC/PGL', 'Disease', (62, 69)) 58409 31362359 Inactivating mutations in the NF1 gene disrupt this inhibitory effect. ('NF1', 'Gene', (30, 33)) ('NF1', 'Gene', '4763', (30, 33)) ('Inactivating mutations', 'Var', (0, 22)) ('disrupt', 'NegReg', (39, 46)) ('inhibitory effect', 'MPA', (52, 69)) 58411 31362359 However, only approximately 6% of patients with the autosomal dominant NF1 syndrome, characterized by germline NF1 mutations, develop PCC, and germline mutations account for <5% of all PCC/PGL. ('NF1', 'Gene', (111, 114)) ('mutations', 'Var', (115, 124)) ('autosomal dominant NF1 syndrome', 'Disease', (52, 83)) ('NF1', 'Gene', (71, 74)) ('NF1', 'Gene', '4763', (111, 114)) ('develop', 'Reg', (126, 133)) ('NF1', 'Gene', '4763', (71, 74)) ('autosomal dominant NF1 syndrome', 'Disease', 'MESH:C537392', (52, 83)) ('PGL', 'Phenotype', 'HP:0002668', (189, 192)) ('PCC', 'Disease', (134, 137)) ('patients', 'Species', '9606', (34, 42)) ('PCC', 'Phenotype', 'HP:0002666', (134, 137)) ('PCC', 'Phenotype', 'HP:0002666', (185, 188)) ('PCC/PGL', 'Disease', (185, 192)) 58416 31362359 Truncated MAX mutations can cause dysregulation of the mTOR pathway. ('mTOR', 'Gene', (55, 59)) ('mTOR', 'Gene', '2475', (55, 59)) ('MAX', 'Gene', (10, 13)) ('cause', 'Reg', (28, 33)) ('dysregulation', 'MPA', (34, 47)) ('Truncated', 'Var', (0, 9)) ('mutations', 'Var', (14, 23)) 58417 31362359 Although MAX IHC has been described in the literature, with the potential to detect MAX mutations in patients in case of absent immunostaining, comparable to negative SDHB staining, this has not found widespread application. ('patients', 'Species', '9606', (101, 109)) ('SDHB', 'Gene', '6390', (167, 171)) ('mutations', 'Var', (88, 97)) ('SDHB', 'Gene', (167, 171)) ('MAX', 'Gene', (84, 87)) 58421 31362359 In addition to its transport function, KIF1B beta plays a role in apoptosis and dysfunctional KIF1B beta due to mutations in the KIF1B gene and can lead to tumorigenesis. ('tumor', 'Disease', 'MESH:D009369', (156, 161)) ('dysfunctional', 'Disease', (80, 93)) ('dysfunctional', 'Disease', 'MESH:D006331', (80, 93)) ('KIF1B', 'Gene', (94, 99)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('mutations', 'Var', (112, 121)) ('tumor', 'Disease', (156, 161)) ('KIF1B', 'Gene', '23095', (94, 99)) ('KIF1B', 'Gene', (39, 44)) ('KIF1B', 'Gene', (129, 134)) ('KIF1B', 'Gene', '23095', (39, 44)) ('KIF1B', 'Gene', '23095', (129, 134)) ('lead to', 'Reg', (148, 155)) 58423 31362359 KIF1B mutant PCC/PGL shows a similar transcription profile as RET and NF1 mutant PCC/PGL. ('KIF1B', 'Gene', (0, 5)) ('mutant', 'Var', (6, 12)) ('NF1', 'Gene', '4763', (70, 73)) ('PGL', 'Phenotype', 'HP:0002668', (85, 88)) ('KIF1B', 'Gene', '23095', (0, 5)) ('PCC', 'Phenotype', 'HP:0002666', (81, 84)) ('PGL', 'Phenotype', 'HP:0002668', (17, 20)) ('PCC', 'Phenotype', 'HP:0002666', (13, 16)) ('mutant', 'Var', (74, 80)) ('NF1', 'Gene', (70, 73)) 58427 31362359 Germline mutations in the MEN1 gene lead to MEN1 syndrome, characterized by various types of endocrine and non-endocrine tumors, including pituitary adenomas, hyperplastic parathyroids, and neuroendocrine pancreatic tumors, with a high penetrance of disease but PCC/PGL are rare and account for <1% of PCC/PGL. ('Germline mutations', 'Var', (0, 18)) ('MEN1 syndrome', 'Disease', 'MESH:D018761', (44, 57)) ('neuroendocrine pancreatic tumors', 'Disease', 'MESH:D018358', (190, 222)) ('pancreatic tumors', 'Phenotype', 'HP:0002894', (205, 222)) ('MEN1', 'Gene', (26, 30)) ('non-endocrine tumors', 'Disease', 'MESH:C536126', (107, 127)) ('hyperplastic parathyroids', 'Phenotype', 'HP:0008208', (159, 184)) ('lead to', 'Reg', (36, 43)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (139, 157)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (139, 157)) ('neuroendocrine pancreatic tumors', 'Disease', (190, 222)) ('MEN1', 'Gene', '4221', (44, 48)) ('pituitary adenomas', 'Disease', (139, 157)) ('PCC', 'Phenotype', 'HP:0002666', (262, 265)) ('PGL', 'Phenotype', 'HP:0002668', (266, 269)) ('PCC', 'Phenotype', 'HP:0002666', (302, 305)) ('tumors', 'Phenotype', 'HP:0002664', (121, 127)) ('PGL', 'Phenotype', 'HP:0002668', (306, 309)) ('MEN1', 'Gene', (44, 48)) ('tumor', 'Phenotype', 'HP:0002664', (216, 221)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (139, 156)) ('non-endocrine tumors', 'Disease', (107, 127)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('MEN1 syndrome', 'Disease', (44, 57)) ('tumors', 'Phenotype', 'HP:0002664', (216, 222)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (111, 126)) ('MEN1', 'Gene', '4221', (26, 30)) 58438 31362359 However, significant interobserver and intraobserver variability is described in scoring the presence or absence of high cellularity, nuclear pleomorphism, and hyperchromasia. ('high', 'Protein', (116, 120)) ('nuclear pleomorphism', 'Var', (134, 154)) ('hyperchromasia', 'Disease', (160, 174)) ('hyperchromasia', 'Disease', 'None', (160, 174)) 58453 31362359 Recurrence and metastases are strongly associated with SDHB mutations; the presence of SDHB mutations should be considered a risk factor for metastases or recurrence. ('SDHB', 'Gene', (55, 59)) ('metastases', 'Disease', (15, 25)) ('metastases', 'Disease', 'MESH:D009362', (141, 151)) ('mutations', 'Var', (92, 101)) ('Recurrence', 'CPA', (0, 10)) ('metastases', 'Disease', 'MESH:D009362', (15, 25)) ('associated', 'Reg', (39, 49)) ('SDHB', 'Gene', '6390', (55, 59)) ('mutations', 'Var', (60, 69)) ('SDHB', 'Gene', '6390', (87, 91)) ('SDHB', 'Gene', (87, 91)) ('metastases', 'Disease', (141, 151)) 58454 31362359 As described above, SDHB IHC is a strong indication for tumors with SDHx mutations. ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('SDHx', 'Chemical', '-', (68, 72)) ('SDHx', 'Gene', (68, 72)) ('tumors', 'Disease', (56, 62)) ('tumors', 'Disease', 'MESH:D009369', (56, 62)) ('tumors', 'Phenotype', 'HP:0002664', (56, 62)) ('SDHB', 'Gene', '6390', (20, 24)) ('mutations', 'Var', (73, 82)) ('SDHB', 'Gene', (20, 24)) 58455 31362359 Loss of SDHB staining is not seen either in prognostically unfavorable SDHB-mutated tumors or in all tumors with SDHx mutations; however, SDHB IHC negativity by itself has also been correlated with metastases. ('SDHB', 'Gene', '6390', (8, 12)) ('SDHB', 'Gene', '6390', (71, 75)) ('tumors', 'Phenotype', 'HP:0002664', (84, 90)) ('SDHx', 'Gene', (113, 117)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('SDHB', 'Gene', (8, 12)) ('SDHB', 'Gene', (71, 75)) ('metastases', 'Disease', 'MESH:D009362', (198, 208)) ('tumors', 'Disease', (84, 90)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('SDHB', 'Gene', '6390', (138, 142)) ('SDHx', 'Chemical', '-', (113, 117)) ('metastases', 'Disease', (198, 208)) ('mutations', 'Var', (118, 127)) ('tumors', 'Disease', 'MESH:D009369', (84, 90)) ('correlated', 'Reg', (182, 192)) ('tumors', 'Disease', (101, 107)) ('SDHB', 'Gene', (138, 142)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) 58458 31362359 Additionally, MAML3 fusion gene variants, leading to Wnt signaling upregulation, as seen in Cluster 3, described above, are associated with metastases. ('MAML3', 'Gene', '55534', (14, 19)) ('MAML3', 'Gene', (14, 19)) ('metastases', 'Disease', (140, 150)) ('associated', 'Reg', (124, 134)) ('upregulation', 'PosReg', (67, 79)) ('variants', 'Var', (32, 40)) ('Wnt signaling', 'MPA', (53, 66)) ('metastases', 'Disease', 'MESH:D009362', (140, 150)) 58459 31362359 In the same study, Ki67 was found to be correlated with metastatic disease. ('metastatic', 'Disease', (56, 66)) ('Ki67', 'Chemical', '-', (19, 23)) ('correlated', 'Reg', (40, 50)) ('Ki67', 'Var', (19, 23)) 58460 31362359 Interestingly, the tumor with the highest Ki67 expression was MAML3 fusion-positive. ('tumor', 'Disease', 'MESH:D009369', (19, 24)) ('Ki67', 'Var', (42, 46)) ('Ki67', 'Chemical', '-', (42, 46)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('MAML3', 'Gene', '55534', (62, 67)) ('MAML3', 'Gene', (62, 67)) ('tumor', 'Disease', (19, 24)) ('expression', 'MPA', (47, 57)) 58462 31362359 Fourteen PGL, six metastatic and eight non-metastatic, as well as two distant metastases were significantly methylated at one or more of the following gene promoters, RASSF1A, NORE1A, p16INK4A, RARB, DCR2, CDH1, and APC. ('metastases', 'Disease', 'MESH:D009362', (78, 88)) ('RASSF1A', 'Gene', (167, 174)) ('p16INK4A', 'Gene', (184, 192)) ('NORE1A', 'Gene', '83593', (176, 182)) ('PGL', 'Phenotype', 'HP:0002668', (9, 12)) ('p16INK4A', 'Gene', '1029', (184, 192)) ('DCR2', 'Gene', (200, 204)) ('CDH1', 'Gene', '999', (206, 210)) ('RASSF1A', 'Gene', '11186', (167, 174)) ('RARB', 'Gene', (194, 198)) ('APC', 'Disease', 'MESH:D011125', (216, 219)) ('APC', 'Disease', (216, 219)) ('methylated', 'Var', (108, 118)) ('NORE1A', 'Gene', (176, 182)) ('metastases', 'Disease', (78, 88)) ('RARB', 'Gene', '5915', (194, 198)) ('DCR2', 'Gene', '8793', (200, 204)) ('CDH1', 'Gene', (206, 210)) 58466 31362359 Whole exome sequencing is expected to become the standard of genetic analysis in the next 5-10 years, allowing rapid detection of mutations in PCC and PGL patients and families. ('PCC', 'Gene', (143, 146)) ('PGL', 'Phenotype', 'HP:0002668', (151, 154)) ('mutations', 'Var', (130, 139)) ('patients', 'Species', '9606', (155, 163)) ('PCC', 'Phenotype', 'HP:0002666', (143, 146)) ('PGL', 'Gene', (151, 154)) 58469 31362359 In addition, a modified GAPP (M-GAPP) has been proposed, incorporating loss of SDHB staining as a criterion, which seems logical in light of the increased metastatic risk related to SDHB mutations. ('SDHB', 'Gene', (182, 186)) ('GAPP', 'Chemical', '-', (24, 28)) ('mutations', 'Var', (187, 196)) ('SDHB', 'Gene', '6390', (79, 83)) ('SDHB', 'Gene', '6390', (182, 186)) ('GAPP', 'Chemical', '-', (32, 36)) ('SDHB', 'Gene', (79, 83)) 58470 31362359 However, the loss of SDHB staining occurs with all SDHx mutations, and increased risk has not been noted for SDHA, SDHC, and SDHD mutations. ('mutations', 'Var', (56, 65)) ('SDHA', 'Gene', '6389', (109, 113)) ('SDHC', 'Gene', '6391', (115, 119)) ('SDHx', 'Gene', (51, 55)) ('SDHB', 'Gene', '6390', (21, 25)) ('SDHD', 'Gene', '6392', (125, 129)) ('SDHx', 'Chemical', '-', (51, 55)) ('loss', 'NegReg', (13, 17)) ('SDHC', 'Gene', (115, 119)) ('SDHB', 'Gene', (21, 25)) ('SDHA', 'Gene', (109, 113)) ('SDHD', 'Gene', (125, 129)) 58538 31078058 To evaluate the acute radiation-related toxicity of 211At-MABG, we conducted biodistribution and dosimetry studies of 211At-MABG in ICR mice to estimate the doses absorbed by organs. ('mice', 'Species', '10090', (136, 140)) ('toxicity', 'Disease', (40, 48)) ('211At-MABG', 'Var', (118, 128)) ('toxicity', 'Disease', 'MESH:D064420', (40, 48)) 58541 31078058 The administration of 1.1, 2.2, and 3.3 MBq of 211At-MABG induced transient body weight loss, and 4.4 MBq of 211At-MABG induced unrecoverable body weight loss; thus, the MTD was 3.3 MBq for ICR mice. ('weight loss', 'Phenotype', 'HP:0001824', (81, 92)) ('weight loss', 'Phenotype', 'HP:0001824', (147, 158)) ('body weight loss', 'Disease', 'MESH:D015431', (142, 158)) ('body weight loss', 'Disease', 'MESH:D015431', (76, 92)) ('body weight loss', 'Disease', (142, 158)) ('mice', 'Species', '10090', (194, 198)) ('body weight loss', 'Disease', (76, 92)) ('211At-MABG', 'Var', (47, 57)) 58549 31078058 Chemotherapy with cyclophosphamide, vincristine, and dacarbazine has a limited duration of effects and confers no survival benefits, whereas 131I-MIBG prolongs survival. ('dacarbazine', 'Chemical', 'MESH:D003606', (53, 64)) ('cyclophosphamide', 'Chemical', 'MESH:D003520', (18, 34)) ('131I-MIBG', 'Chemical', '-', (141, 150)) ('prolongs', 'PosReg', (151, 159)) ('131I-MIBG', 'Var', (141, 150)) ('vincristine', 'Chemical', 'MESH:D014750', (36, 47)) 58554 31078058 We previously demonstrated strong antitumor effects of 211At-MABG in nude mice bearing pheochromocytoma xenograft tumors, suggesting potential efficacy of 211At-MABG as a new therapeutic option for malignant pheochromocytoma. ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('tumor', 'Disease', (38, 43)) ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (87, 103)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (198, 224)) ('malignant pheochromocytoma', 'Disease', (198, 224)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (208, 224)) ('tumor', 'Disease', (114, 119)) ('tumor', 'Disease', 'MESH:D009369', (38, 43)) ('211At-MABG', 'Var', (155, 165)) ('tumors', 'Phenotype', 'HP:0002664', (114, 120)) ('pheochromocytoma xenograft tumors', 'Disease', 'MESH:D010673', (87, 120)) ('nude mice', 'Species', '10090', (69, 78)) ('pheochromocytoma xenograft tumors', 'Disease', (87, 120)) 58559 31078058 Therefore, surrogate imaging probes such as 123I-MIBG and 131I-MIBG would be appropriate for dosimetry in patients. ('131I-MIBG', 'Chemical', '-', (58, 67)) ('123I-MIBG', 'Var', (44, 53)) ('123I-MIBG', 'Chemical', '-', (44, 53)) ('patients', 'Species', '9606', (106, 114)) ('131I-MIBG', 'Var', (58, 67)) 58563 31078058 Therefore, it is important to evaluate whether 211At-MABG induces unexpected radiation-related toxicity before performing first-in-human studies. ('human', 'Species', '9606', (131, 136)) ('211At-MABG', 'Var', (47, 57)) ('toxicity', 'Disease', 'MESH:D064420', (95, 103)) ('toxicity', 'Disease', (95, 103)) 58565 31078058 We additionally determined the maximum tolerated dose (MTD) of 211At-MABG for ICR mice on the basis of body weight loss and assessed the acute radiotoxicity induced by MTD on the basis of organ weights, histologic features, hematologic indices, and biochemical indices. ('mice', 'Species', '10090', (82, 86)) ('acute radiotoxicity', 'Disease', (137, 156)) ('body weight loss', 'Disease', 'MESH:D015431', (103, 119)) ('211At-MABG', 'Var', (63, 73)) ('body weight loss', 'Disease', (103, 119)) ('weight loss', 'Phenotype', 'HP:0001824', (108, 119)) ('acute radiotoxicity', 'Disease', 'MESH:D059787', (137, 156)) 58590 31078058 Although the plasma T3 concentration in the 211At-MABG treatment group was higher than that in the control group at day 5 after administration (P < .01), there was no significant difference at day 28 (Figure 5). ('plasma T3 concentration', 'MPA', (13, 36)) ('higher', 'PosReg', (75, 81)) ('211At-MABG', 'Var', (44, 54)) ('T3', 'Chemical', 'MESH:D014284', (20, 22)) 58591 31078058 Similarly, the norepinephrine levels in the 211At-MABG group were significantly higher than those in the control group at day 5 (P < .05), whereas there was no significant difference at day 28 (Figure 5). ('norepinephrine', 'Chemical', 'MESH:D009638', (15, 29)) ('211At-MABG', 'Var', (44, 54)) ('higher', 'PosReg', (80, 86)) ('norepinephrine levels', 'MPA', (15, 36)) 58593 31078058 The alpha-emitting radiopharmaceutical 211At-MABG is expected to achieve better outcomes in metastatic pheochromocytoma than the beta--emitting radiopharmaceutical 131I-MIBG. ('pheochromocytoma', 'Disease', 'MESH:D010673', (103, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (103, 119)) ('beta-', 'Chemical', '-', (129, 134)) ('pheochromocytoma', 'Disease', (103, 119)) ('131I-MIBG', 'Chemical', '-', (164, 173)) ('211At-MABG', 'Var', (39, 49)) 58597 31078058 We therefore considered it necessary to evaluate whether 211At-MABG induces unexpected acute radiotoxicity in mice before the first-in-human study is performed. ('211At-MABG', 'Var', (57, 67)) ('acute radiotoxicity', 'Disease', 'MESH:D059787', (87, 106)) ('mice', 'Species', '10090', (110, 114)) ('human', 'Species', '9606', (135, 140)) ('acute radiotoxicity', 'Disease', (87, 106)) 58599 31078058 Because tumor uptake of 211At-MABG would affect the biodistribution in the whole body, the present study employed non-tumor-bearing ICR mice and included a comprehensive evaluation of acute radiotoxicity. ('biodistribution in the whole body', 'MPA', (52, 85)) ('mice', 'Species', '10090', (136, 140)) ('tumor', 'Disease', 'MESH:D009369', (118, 123)) ('211At-MABG', 'Var', (24, 34)) ('tumor', 'Disease', 'MESH:D009369', (8, 13)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('tumor', 'Disease', (118, 123)) ('tumor', 'Disease', (8, 13)) ('acute radiotoxicity', 'Disease', 'MESH:D059787', (184, 203)) ('acute radiotoxicity', 'Disease', (184, 203)) ('affect', 'Reg', (41, 47)) 58605 31078058 These findings suggest that administration of high doses of 211At-MABG may provide information on radiotoxicity induced by 211At-MABG. ('radiotoxicity', 'Disease', 'None', (98, 111)) ('radiotoxicity', 'Disease', (98, 111)) ('211At-MABG', 'Var', (123, 133)) 58620 31078058 Although the present study showed that high doses of 211At-MABG were well tolerated in mice and unexpected radiation-induced toxicity was not observed under our conditions, the study has several limitations. ('toxicity', 'Disease', (125, 133)) ('mice', 'Species', '10090', (87, 91)) ('toxicity', 'Disease', 'MESH:D064420', (125, 133)) ('211At-MABG', 'Var', (53, 63)) 58622 31078058 Second, the present examination in male mice cannot address the possibility that some toxicity might be present only in females, although to our knowledge, no female-specific toxicity has been reported in patients treated with 131I-MIBG. ('toxicity', 'Disease', 'MESH:D064420', (175, 183)) ('patients', 'Species', '9606', (205, 213)) ('131I-MIBG', 'Chemical', '-', (227, 236)) ('toxicity', 'Disease', (175, 183)) ('toxicity', 'Disease', 'MESH:D064420', (86, 94)) ('toxicity', 'Disease', (86, 94)) ('mice', 'Species', '10090', (40, 44)) ('131I-MIBG', 'Var', (227, 236)) 58630 31078058 Unexpected severe toxicity was not observed in the present study, although high radiation doses were absorbed by most organs, especially the thyroid, heart, stomach, and adrenal glands, after injection of 3.3 MBq of 211At-MABG. ('toxicity', 'Disease', 'MESH:D064420', (18, 26)) ('211At-MABG', 'Var', (216, 226)) ('toxicity', 'Disease', (18, 26)) 58632 30087776 A patient with a germline SDHB mutation presenting with an isolated pituitary macroprolactinoma Symptomatic pituitary adenomas occur with a prevalence of approximately 0.1% in the general population. ('prolactinoma', 'Phenotype', 'HP:0040278', (83, 95)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (108, 126)) ('macroprolactinoma', 'Phenotype', 'HP:0012342', (78, 95)) ('mutation', 'Var', (31, 39)) ('SDHB', 'Gene', '6390', (26, 30)) ('SDHB', 'Gene', (26, 30)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (108, 126)) ('pituitary macroprolactinoma', 'Disease', 'MESH:D015175', (68, 95)) ('pituitary adenomas', 'Disease', (108, 126)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (108, 125)) ('patient', 'Species', '9606', (2, 9)) ('isolated pituitary macroprolactinoma Symptomatic pituitary adenomas', 'Phenotype', 'HP:0011761', (59, 126)) ('pituitary macroprolactinoma', 'Disease', (68, 95)) 58634 30087776 Recently, loss-of-function mutations in genes encoding succinate dehydrogenase subunits (SDHx) or MYC-associated factor X (MAX) have been found to predispose to pituitary adenomas in co-existence with paragangliomas or phaeochromocytomas. ('mutations', 'Var', (27, 36)) ('MYC-associated factor X', 'Gene', '4149', (98, 121)) ('MYC-associated factor X', 'Gene', (98, 121)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (161, 179)) ('paragangliomas or phaeochromocytomas', 'Disease', 'MESH:D010235', (201, 237)) ('loss-of-function', 'NegReg', (10, 26)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (161, 178)) ('pituitary adenomas', 'Disease', (161, 179)) ('succinate dehydrogenase', 'Gene', '6390', (55, 78)) ('SDHx', 'Chemical', '-', (89, 93)) ('paraganglioma', 'Phenotype', 'HP:0002668', (201, 214)) ('succinate dehydrogenase', 'Gene', (55, 78)) ('paragangliomas', 'Phenotype', 'HP:0002668', (201, 215)) ('paragangliomas or phaeochromocytomas', 'Disease', (201, 237)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (161, 179)) ('MAX', 'Gene', '4149', (123, 126)) ('MAX', 'Gene', (123, 126)) 58635 30087776 It is rare, however, for a familial SDHx mutation to manifest as an isolated pituitary adenoma. ('SDHx', 'Chemical', '-', (36, 40)) ('isolated pituitary adenoma', 'Phenotype', 'HP:0011761', (68, 94)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (77, 94)) ('mutation', 'Var', (41, 49)) ('pituitary adenoma', 'Disease', (77, 94)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (77, 94)) 58636 30087776 We present the case of a pituitary lactotroph adenoma in a patient with a heterozygous germline SDHB mutation, in the absence of concomitant neoplasms. ('neoplasms', 'Disease', 'MESH:D009369', (141, 150)) ('neoplasms', 'Disease', (141, 150)) ('patient', 'Species', '9606', (59, 66)) ('pituitary lactotroph adenoma', 'Disease', 'MESH:D015175', (25, 53)) ('SDHB', 'Gene', '6390', (96, 100)) ('pituitary lactotroph adenoma', 'Disease', (25, 53)) ('SDHB', 'Gene', (96, 100)) ('mutation', 'Var', (101, 109)) ('neoplasms', 'Phenotype', 'HP:0002664', (141, 150)) 58640 30087776 Our patient's SDHB mutation was identified when we realised that her father had a metastatic paraganglioma, prompting genetic testing. ('mutation', 'Var', (19, 27)) ('paraganglioma', 'Disease', 'MESH:D010235', (93, 106)) ('patient', 'Species', '9606', (4, 11)) ('SDHB', 'Gene', '6390', (14, 18)) ('paraganglioma', 'Phenotype', 'HP:0002668', (93, 106)) ('paraganglioma', 'Disease', (93, 106)) ('SDHB', 'Gene', (14, 18)) 58642 30087776 This histological feature is suggestive of an SDHx mutation and should prompt further screening for mutations by immunohistochemistry and/or genetic testing. ('SDHx', 'Chemical', '-', (46, 50)) ('mutation', 'Var', (51, 59)) ('SDHx', 'Gene', (46, 50)) 58645 30087776 SDHx mutated pituitary adenomas may display clinically aggressive behaviour and demonstrate variable response to medical treatment. ('pituitary adenomas', 'Phenotype', 'HP:0002893', (13, 31)) ('pituitary adenomas', 'Disease', (13, 31)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (13, 30)) ('SDHx', 'Chemical', '-', (0, 4)) ('mutated pituitary adenomas', 'Phenotype', 'HP:0011761', (5, 31)) ('SDHx', 'Gene', (0, 4)) ('mutated', 'Var', (5, 12)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (13, 31)) ('aggressive behaviour', 'Phenotype', 'HP:0000718', (55, 75)) 58646 30087776 Histological evidence of intracytoplasmic vacuoles in a pituitary adenoma might suggest an SDH-deficient tumour and should prompt further screening for SDHx mutations. ('pituitary adenoma', 'Disease', (56, 73)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (56, 73)) ('SDH-deficient tumour', 'Disease', 'MESH:D009369', (91, 111)) ('mutations', 'Var', (157, 166)) ('SDH-deficient tumour', 'Disease', (91, 111)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (56, 73)) ('SDHx', 'Chemical', '-', (152, 156)) ('tumour', 'Phenotype', 'HP:0002664', (105, 111)) ('SDHx', 'Gene', (152, 156)) 58647 30087776 Immunohistochemistry may not always predict the presence of SDHx mutations. ('SDHx', 'Chemical', '-', (60, 64)) ('SDHx', 'Gene', (60, 64)) ('mutations', 'Var', (65, 74)) 58651 30087776 More recently, loss-of-function mutations in genes encoding succinate dehydrogenase (SDH) subunits have been implicated in the development of the rare but increasingly recognised co-existence of paraganglioma/phaeochromocytoma and pituitary adenoma. ('succinate dehydrogenase', 'Gene', '6390', (60, 83)) ('succinate dehydrogenase', 'Gene', (60, 83)) ('SDH', 'Gene', (85, 88)) ('paraganglioma', 'Phenotype', 'HP:0002668', (195, 208)) ('pituitary adenoma', 'Disease', (231, 248)) ('paraganglioma/phaeochromocytoma', 'Disease', (195, 226)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (231, 248)) ('mutations', 'Var', (32, 41)) ('paraganglioma/phaeochromocytoma', 'Disease', 'MESH:D010235', (195, 226)) ('SDH', 'Gene', '6390', (85, 88)) ('loss-of-function', 'NegReg', (15, 31)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (231, 248)) 58654 30087776 Loss-of-function mutations in genes encoding the SDH subunits (SDHx: SDHA, SDHB, SDHC, SDHD) or its assembly factor (SDHAF2) have long been associated with various tumours, including paragangliomas and phaeochromocytomas, gastrointestinal stromal tumours (GISTs), renal carcinomas and pituitary adenomas. ('SDH', 'Gene', '6390', (49, 52)) ('tumour', 'Phenotype', 'HP:0002664', (164, 170)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (285, 303)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (285, 303)) ('pituitary adenomas', 'Disease', (285, 303)) ('renal carcinomas', 'Disease', 'MESH:C538614', (264, 280)) ('paragangliomas', 'Phenotype', 'HP:0002668', (183, 197)) ('tumours', 'Disease', (247, 254)) ('SDHD', 'Gene', '6392', (87, 91)) ('mutations', 'Var', (17, 26)) ('SDH', 'Gene', (81, 84)) ('paraganglioma', 'Phenotype', 'HP:0002668', (183, 196)) ('SDH', 'Gene', '6390', (63, 66)) ('SDH', 'Gene', '6390', (87, 90)) ('SDHC', 'Gene', '6391', (81, 85)) ('SDH', 'Gene', (49, 52)) ('tumours', 'Phenotype', 'HP:0002664', (247, 254)) ('tumours', 'Disease', 'MESH:D009369', (247, 254)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (285, 302)) ('paragangliomas and phaeochromocytomas, gastrointestinal stromal tumours', 'Disease', 'MESH:C564650', (183, 254)) ('SDHD', 'Gene', (87, 91)) ('carcinomas', 'Phenotype', 'HP:0030731', (270, 280)) ('renal carcinomas', 'Disease', (264, 280)) ('tumour', 'Phenotype', 'HP:0002664', (247, 253)) ('SDH', 'Gene', '6390', (69, 72)) ('SDH', 'Gene', '6390', (117, 120)) ('SDHAF2', 'Gene', '54949', (117, 123)) ('renal carcinomas', 'Phenotype', 'HP:0005584', (264, 280)) ('SDHAF2', 'Gene', (117, 123)) ('SDHA', 'Gene', (69, 73)) ('SDHA', 'Gene', (117, 121)) ('SDH', 'Gene', (63, 66)) ('SDHB', 'Gene', '6390', (75, 79)) ('SDH', 'Gene', '6390', (75, 78)) ('tumours', 'Disease', (164, 171)) ('SDH', 'Gene', (87, 90)) ('SDHA', 'Gene', '6389', (69, 73)) ('Loss-of-function', 'NegReg', (0, 16)) ('SDHA', 'Gene', '6389', (117, 121)) ('SDHC', 'Gene', (81, 85)) ('tumours', 'Phenotype', 'HP:0002664', (164, 171)) ('SDH', 'Gene', (69, 72)) ('SDH', 'Gene', '6390', (81, 84)) ('tumours', 'Disease', 'MESH:D009369', (164, 171)) ('SDHx', 'Chemical', '-', (63, 67)) ('SDH', 'Gene', (117, 120)) ('SDHB', 'Gene', (75, 79)) ('SDH', 'Gene', (75, 78)) 58655 30087776 Previously, there have been three reported cases of pituitary adenoma occurring in association with familial SDHB mutation, in the absence of a personal history of paraganglioma. ('pituitary adenoma', 'Disease', (52, 69)) ('SDHB', 'Gene', '6390', (109, 113)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (52, 69)) ('SDHB', 'Gene', (109, 113)) ('paraganglioma', 'Phenotype', 'HP:0002668', (164, 177)) ('paraganglioma', 'Disease', (164, 177)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (52, 69)) ('mutation', 'Var', (114, 122)) ('paraganglioma', 'Disease', 'MESH:D010235', (164, 177)) 58656 30087776 We describe a patient with SDHB mutation who developed a lactotroph adenoma without any other tumour manifestation. ('tumour', 'Disease', (94, 100)) ('developed', 'PosReg', (45, 54)) ('adenoma', 'Disease', (68, 75)) ('tumour', 'Phenotype', 'HP:0002664', (94, 100)) ('mutation', 'Var', (32, 40)) ('SDHB', 'Gene', '6390', (27, 31)) ('patient', 'Species', '9606', (14, 21)) ('SDHB', 'Gene', (27, 31)) ('adenoma', 'Disease', 'MESH:D000236', (68, 75)) ('tumour', 'Disease', 'MESH:D009369', (94, 100)) 58682 30087776 He was a carrier of a germline missense SDHB mutation (c.298T>C, p.Ser100Pro). ('SDHB', 'Gene', '6390', (40, 44)) ('SDHB', 'Gene', (40, 44)) ('p.Ser100Pro', 'Mutation', 'p.S100P', (65, 76)) ('p.Ser100Pro', 'Var', (65, 76)) ('c.298T>C', 'Mutation', 'c.298T>C', (55, 63)) ('c.298T>C', 'Var', (55, 63)) 58689 30087776 It is highly unusual for a patient with a germline SDHB mutation to present as an isolated pituitary adenoma. ('pituitary adenoma', 'Phenotype', 'HP:0002893', (91, 108)) ('isolated pituitary adenoma', 'Phenotype', 'HP:0011761', (82, 108)) ('patient', 'Species', '9606', (27, 34)) ('pituitary adenoma', 'Disease', (91, 108)) ('SDHB', 'Gene', '6390', (51, 55)) ('SDHB', 'Gene', (51, 55)) ('mutation', 'Var', (56, 64)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (91, 108)) ('present', 'Reg', (68, 75)) 58690 30087776 Certainly, germline mutations in SDHx, and more recently MAX, are recognised as an infrequent syndromic cause of pituitary adenomas. ('MAX', 'Gene', (57, 60)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (113, 130)) ('SDHx', 'Chemical', '-', (33, 37)) ('pituitary adenomas', 'Disease', (113, 131)) ('MAX', 'Gene', '4149', (57, 60)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (113, 131)) ('cause', 'Reg', (104, 109)) ('germline mutations', 'Var', (11, 29)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (113, 131)) ('SDHx', 'Gene', (33, 37)) 58692 30087776 Although the mean age of diagnosis of paraganglioma/phaeochromocytoma in SDHB mutation carriers is reported to be in the third decade, recent systematic screening of large families identified numerous patients with newly recognised disease at older ages. ('patients', 'Species', '9606', (201, 209)) ('mutation', 'Var', (78, 86)) ('paraganglioma', 'Phenotype', 'HP:0002668', (38, 51)) ('paraganglioma/phaeochromocytoma', 'Disease', (38, 69)) ('paraganglioma/phaeochromocytoma', 'Disease', 'MESH:D010235', (38, 69)) ('SDHB', 'Gene', '6390', (73, 77)) ('SDHB', 'Gene', (73, 77)) 58693 30087776 Our case adds to the three previous reports of isolated pituitary adenoma in the setting of an inherited SDHB mutation and familial paraganglioma. ('isolated pituitary adenoma', 'Phenotype', 'HP:0011761', (47, 73)) ('SDHB', 'Gene', '6390', (105, 109)) ('pituitary adenoma', 'Disease', (56, 73)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (56, 73)) ('SDHB', 'Gene', (105, 109)) ('familial paraganglioma', 'Disease', (123, 145)) ('mutation', 'Var', (110, 118)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (56, 73)) ('paraganglioma', 'Phenotype', 'HP:0002668', (132, 145)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (123, 145)) 58700 30087776 The limited literature available suggests that pituitary adenomas associated with SDHx mutations exhibit clinically aggressive behaviour, but further data are needed for detailed characterisation of the response to medical treatment SDHx-related pituitary adenomas. ('pituitary adenomas', 'Disease', (246, 264)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (47, 64)) ('SDHx', 'Chemical', '-', (82, 86)) ('SDHx', 'Gene', (82, 86)) ('associated', 'Reg', (66, 76)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (246, 264)) ('aggressive behaviour', 'Phenotype', 'HP:0000718', (116, 136)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (47, 65)) ('SDHx', 'Chemical', '-', (233, 237)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (246, 264)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (47, 65)) ('mutations', 'Var', (87, 96)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (246, 263)) ('pituitary adenomas', 'Disease', (47, 65)) 58706 30087776 The presence of prominent intracytoplasmic vacuoles should prompt the examining histopathologist to perform SDHB and SDHA immunostaining to screen for a possible SDHx mutation. ('SDHA', 'Gene', '6389', (117, 121)) ('SDHB', 'Gene', (108, 112)) ('mutation', 'Var', (167, 175)) ('SDHA', 'Gene', (117, 121)) ('screen', 'Reg', (140, 146)) ('SDHx', 'Chemical', '-', (162, 166)) ('SDHB', 'Gene', '6390', (108, 112)) ('SDHx', 'Gene', (162, 166)) 58707 30087776 A recent multicentre interobserver variation analysis on the use of SDHB/SHDA immunohistochemistry in paragangliomas and phaeochromocytomas and a study on pituitary adenomas confirmed its use as a cheap and reliable tool to identify patients with SDHx mutations, prior to genetic testing. ('pituitary adenomas', 'Disease', 'MESH:D010911', (155, 173)) ('paraganglioma', 'Phenotype', 'HP:0002668', (102, 115)) ('paragangliomas', 'Phenotype', 'HP:0002668', (102, 116)) ('SDHx', 'Chemical', '-', (247, 251)) ('SDHB', 'Gene', '6390', (68, 72)) ('SDHx', 'Gene', (247, 251)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (155, 173)) ('pituitary adenomas', 'Disease', (155, 173)) ('mutations', 'Var', (252, 261)) ('SDHB', 'Gene', (68, 72)) ('paragangliomas and phaeochromocytomas', 'Disease', 'MESH:D010235', (102, 139)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (155, 172)) ('patients', 'Species', '9606', (233, 241)) 58708 30087776 In our specific case, the substitution p.Ser100Pro might have resulted in impaired SDHB binding to iron-sulphur clusters and possibly in impaired interactions between the protein and the other subunits. ('SDHB', 'Gene', (83, 87)) ('impaired', 'NegReg', (74, 82)) ('impaired', 'NegReg', (137, 145)) ('p.Ser100Pro', 'Var', (39, 50)) ('interactions', 'Interaction', (146, 158)) ('SDHB', 'Gene', '6390', (83, 87)) ('binding', 'Interaction', (88, 95)) ('iron-sulphur', 'Protein', (99, 111)) ('p.Ser100Pro', 'Mutation', 'p.S100P', (39, 50)) 58709 30087776 In in vitro studies, the p.Ser100Pro substitution did not show elevated succinate level, but had an increased succinate/fumarate ratio. ('succinate', 'Chemical', 'MESH:D019802', (110, 119)) ('increased', 'PosReg', (100, 109)) ('elevated succinate', 'Phenotype', 'HP:0020149', (63, 81)) ('succinate/fumarate ratio', 'MPA', (110, 134)) ('fumarate', 'Chemical', 'MESH:D005650', (120, 128)) ('p.Ser100Pro', 'Mutation', 'p.S100P', (25, 36)) ('p.Ser100Pro', 'Var', (25, 36)) ('increased succinate', 'Phenotype', 'HP:0020149', (100, 119)) ('succinate level', 'MPA', (72, 87)) ('succinate', 'Chemical', 'MESH:D019802', (72, 81)) 58712 30087776 It is possible that mutated SDHB becomes less stable and degraded at a higher rate than the WT protein in the paraganglioma tissue but not in the pituitary adenoma. ('pituitary adenoma', 'Disease', (146, 163)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (146, 163)) ('paraganglioma', 'Disease', 'MESH:D010235', (110, 123)) ('stable', 'MPA', (46, 52)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (146, 163)) ('degraded', 'NegReg', (57, 65)) ('paraganglioma', 'Phenotype', 'HP:0002668', (110, 123)) ('less', 'NegReg', (41, 45)) ('SDHB', 'Gene', '6390', (28, 32)) ('paraganglioma', 'Disease', (110, 123)) ('SDHB', 'Gene', (28, 32)) ('mutated', 'Var', (20, 27)) 58715 30087776 Furthermore, this case demonstrates that immunohistochemistry is not always predictive of SDHx mutations and therefore cannot replace genetic analysis. ('SDHx', 'Chemical', '-', (90, 94)) ('SDHx', 'Gene', (90, 94)) ('mutations', 'Var', (95, 104)) 58777 29850871 These abnormalities appear to induce an interstitial mononuclear inflammatory response and occasionally contraction band necrosis. ('necrosis', 'Disease', (121, 129)) ('interstitial mononuclear inflammatory response', 'CPA', (40, 86)) ('necrosis', 'Disease', 'MESH:D009336', (121, 129)) ('abnormalities', 'Var', (6, 19)) ('induce', 'Reg', (30, 36)) 58801 29850871 In the acute phase, intravenous administration of adenosine has been shown to transiently improve myocardial perfusion, wall motion score index, and left ventricular ejection fraction (LVEF) in TTS, suggesting that intense microvascular constriction plays a major role in the pathophysiology. ('TTS', 'Phenotype', 'HP:0011665', (194, 197)) ('wall motion score index', 'MPA', (120, 143)) ('adenosine', 'Var', (50, 59)) ('myocardial perfusion', 'MPA', (98, 118)) ('adenosine', 'Chemical', 'MESH:D000241', (50, 59)) ('rat', 'Species', '10116', (40, 43)) ('left ventricular ejection fraction', 'MPA', (149, 183)) ('improve', 'PosReg', (90, 97)) 58813 29850871 In rodent heart failure models, administration of isoproterenol yields apical fibrosis, and abnormalities of apical contraction and metabolism, features known to occur in dysfunctional apical segments during the acute phase in TTS using fludeoxyglucose-positron emission tomographic studies. ('isoproterenol', 'Chemical', 'MESH:D007545', (50, 63)) ('fibrosis', 'Disease', 'MESH:D005355', (78, 86)) ('fibrosis', 'Disease', (78, 86)) ('heart failure', 'Phenotype', 'HP:0001635', (10, 23)) ('metabolism', 'MPA', (132, 142)) ('men', 'Species', '9606', (195, 198)) ('heart failure', 'Disease', (10, 23)) ('rat', 'Species', '10116', (40, 43)) ('fludeoxyglucose', 'Chemical', 'MESH:D019788', (237, 252)) ('apical fibrosis', 'Phenotype', 'HP:0032176', (71, 86)) ('abnormalities', 'Var', (92, 105)) ('dysfunctional', 'Disease', 'MESH:D006331', (171, 184)) ('apical contraction', 'CPA', (109, 127)) ('TTS', 'Phenotype', 'HP:0011665', (227, 230)) ('dysfunctional', 'Disease', (171, 184)) ('heart failure', 'Disease', 'MESH:D006333', (10, 23)) 58821 29850871 A polymorphism of the G-protein receptor kinase 5 (GRK5) gene L41Q that blunts beta2-Gi trafficking appears common in TTS. ('L41Q', 'Var', (62, 66)) ('G-protein receptor kinase 5', 'Gene', '2869', (22, 49)) ('TTS', 'Phenotype', 'HP:0011665', (118, 121)) ('GRK5', 'Gene', '2869', (51, 55)) ('beta2', 'Gene', (79, 84)) ('blunts', 'NegReg', (72, 78)) ('G-protein receptor kinase 5', 'Gene', (22, 49)) ('beta2', 'Gene', '10242', (79, 84)) ('GRK5', 'Gene', (51, 55)) ('polymorphism', 'Var', (2, 14)) ('L41Q', 'Mutation', 'rs2230345', (62, 66)) 58828 29850871 Cell survival is achieved through various mechanisms: (i) direct inhibition of apoptosis, (ii) inhibition of proapoptotic transcriptional factors, (iii) enhancement of anti-apoptotic transcriptional factors, and (iv) enhancement of cell metabolism by inhibition of the GSK3. ('inhibition', 'NegReg', (65, 75)) ('men', 'Species', '9606', (224, 227)) ('enhancement', 'PosReg', (153, 164)) ('GSK3', 'Gene', (269, 273)) ('cell metabolism', 'CPA', (232, 247)) ('inhibition', 'NegReg', (95, 105)) ('proapoptotic transcriptional factors', 'MPA', (109, 145)) ('inhibition', 'Var', (251, 261)) ('apoptosis', 'CPA', (79, 88)) ('men', 'Species', '9606', (160, 163)) ('enhancement', 'PosReg', (217, 228)) ('anti-apoptotic transcriptional factors', 'MPA', (168, 206)) 58835 29850871 In women with subarachnoid haemorrhage, low levels of oestradiol have been associated with an increased risk of LV wall motion abnormalities. ('subarachnoid haemorrhage', 'Phenotype', 'HP:0002138', (14, 38)) ('oestradiol', 'Protein', (54, 64)) ('oestradiol', 'Chemical', 'MESH:D004958', (54, 64)) ('subarachnoid haemorrhage', 'Disease', 'MESH:D013345', (14, 38)) ('low', 'Var', (40, 43)) ('low levels of oestradiol', 'Phenotype', 'HP:0008214', (40, 64)) ('women', 'Species', '9606', (3, 8)) ('motion abnormalities', 'Disease', 'MESH:D009041', (120, 140)) ('subarachnoid haemorrhage', 'Disease', (14, 38)) ('motion abnormalities', 'Disease', (120, 140)) ('LV wall motion abnormalities', 'Phenotype', 'HP:0012667', (112, 140)) 58840 29850871 Polymorphisms in adrenergic genes indeed affect receptor function and downstream signalling, and this raises the possibility that their distribution may differ in TTS patients. ('downstream signalling', 'MPA', (70, 91)) ('Polymorphisms', 'Var', (0, 13)) ('receptor function', 'MPA', (48, 65)) ('patients', 'Species', '9606', (167, 175)) ('TTS', 'Phenotype', 'HP:0011665', (163, 166)) ('TTS', 'Disease', (163, 166)) ('adrenergic genes', 'Gene', (17, 33)) ('affect', 'Reg', (41, 47)) 58841 29850871 Indeed, functional variants of adrenergic receptor genes have been associated with the magnitude of cardiac dysfunction in patients with subarachnoid haemorrhage and pheochromocytoma, conditions which can trigger TTS. ('cardiac dysfunction', 'Disease', (100, 119)) ('pheochromocytoma', 'Disease', (166, 182)) ('adrenergic receptor genes', 'Gene', (31, 56)) ('cardiac dysfunction', 'Disease', 'MESH:D006331', (100, 119)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (166, 182)) ('subarachnoid haemorrhage', 'Disease', (137, 161)) ('TTS', 'Phenotype', 'HP:0011665', (213, 216)) ('patients', 'Species', '9606', (123, 131)) ('subarachnoid haemorrhage', 'Phenotype', 'HP:0002138', (137, 161)) ('subarachnoid haemorrhage', 'Disease', 'MESH:D013345', (137, 161)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (166, 182)) ('associated', 'Reg', (67, 77)) ('variants', 'Var', (19, 27)) 58842 29850871 beta1-adrenergic receptor (amino acid position 389) and beta2-adrenergic receptor (amino acid position 27) variants were associated with a greater release of troponin I and alpha2-adrenergic receptor deletion (del322-325) with reduced LVEF. ('beta2-adrenergic receptor', 'Gene', (56, 81)) ('reduced', 'NegReg', (227, 234)) ('beta1-adrenergic receptor', 'Gene', (0, 25)) ('beta2-adrenergic receptor', 'Gene', '154', (56, 81)) ('variants', 'Var', (107, 115)) ('alpha2-adrenergic receptor', 'Protein', (173, 199)) ('del322-325', 'Mutation', 'c.322_325del', (210, 220)) ('release of troponin I', 'MPA', (147, 168)) ('greater', 'PosReg', (139, 146)) ('beta1-adrenergic receptor', 'Gene', '153', (0, 25)) ('LVEF', 'Disease', (235, 239)) ('del322-325', 'Var', (210, 220)) 58844 29850871 In contrast, a different distribution of beta1-receptor polymorphisms Arg389Gly [homozygous arginine (Arg)/Arg] is more frequently found in TTS, while beta2-receptor polymorphisms Gln27Glu [homozygous glutamine (Gln)/Gln] were found more frequently in healthy controls, and no difference was observed in the beta2-receptor Arg16Gly variant between groups. ('found', 'Reg', (131, 136)) ('glutamine', 'Chemical', 'MESH:D005973', (201, 210)) ('beta2', 'Gene', (308, 313)) ('arginine', 'Chemical', 'MESH:D001120', (92, 100)) ('Gln', 'Chemical', 'MESH:D005973', (217, 220)) ('Arg', 'Chemical', 'MESH:D001120', (107, 110)) ('TTS', 'Disease', (140, 143)) ('beta2', 'Gene', (151, 156)) ('Arg389Gly', 'SUBSTITUTION', 'None', (70, 79)) ('Arg16Gly', 'SUBSTITUTION', 'None', (323, 331)) ('beta1', 'Gene', '10678', (41, 46)) ('Arg389Gly', 'Var', (70, 79)) ('Gln', 'Chemical', 'MESH:D005973', (212, 215)) ('Gln', 'Chemical', 'MESH:D005973', (180, 183)) ('beta2', 'Gene', '10242', (308, 313)) ('Gln27Glu', 'SUBSTITUTION', 'None', (180, 188)) ('Gln27Glu', 'Var', (180, 188)) ('TTS', 'Phenotype', 'HP:0011665', (140, 143)) ('Arg', 'Chemical', 'MESH:D001120', (102, 105)) ('beta2', 'Gene', '10242', (151, 156)) ('Arg16Gly', 'Var', (323, 331)) ('Arg', 'Chemical', 'MESH:D001120', (323, 326)) ('Arg', 'Chemical', 'MESH:D001120', (70, 73)) ('beta1', 'Gene', (41, 46)) 58845 29850871 Furthermore, similar genetic polymorphisms in the beta1-adrenergic receptor and the beta2-adrenergic receptor were noted in TTS and controls, while a higher frequency of rs17098707 polymorphism in the GRK5 gene was found in TTS patients. ('beta1-adrenergic receptor', 'Gene', '153', (50, 75)) ('GRK5', 'Gene', (201, 205)) ('rs17098707', 'Mutation', 'rs17098707', (170, 180)) ('beta2-adrenergic receptor', 'Gene', (84, 109)) ('beta2-adrenergic receptor', 'Gene', '154', (84, 109)) ('patients', 'Species', '9606', (228, 236)) ('TTS', 'Phenotype', 'HP:0011665', (224, 227)) ('GRK5', 'Gene', '2869', (201, 205)) ('beta1-adrenergic receptor', 'Gene', (50, 75)) ('TTS', 'Disease', (124, 127)) ('rs17098707 polymorphism', 'Var', (170, 193)) ('TTS', 'Phenotype', 'HP:0011665', (124, 127)) ('TTS', 'Disease', (224, 227)) 58932 29785166 Pheochromocytoma and renal cell carcinoma can occur as a part of complex syndromes, such as type 2 multiple endocrine neoplasia (as a consequence of RET proto-oncogene mutations), Von Hippel-Lindau disease (mutations of the VHL gene), or pheochromocytoma-paraganglioma syndromes (heterozygous germline mutations of succinate dehydrogenase subunits B, C, and D). ('VHL', 'Gene', '7428', (224, 227)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (108, 127)) ('paraganglioma', 'Phenotype', 'HP:0002668', (255, 268)) ('mutations', 'Var', (168, 177)) ('RET', 'Gene', '5979', (149, 152)) ('type 2', 'Disease', (92, 98)) ('carcinoma', 'Phenotype', 'HP:0030731', (32, 41)) ('endocrine neoplasia', 'Disease', (108, 127)) ('occur', 'Reg', (46, 51)) ('pheochromocytoma-paraganglioma syndromes', 'Disease', (238, 278)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (21, 41)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('RET', 'Gene', (149, 152)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('endocrine neoplasia', 'Disease', 'MESH:D009377', (108, 127)) ('Von Hippel-Lindau disease', 'Disease', (180, 205)) ('VHL', 'Gene', (224, 227)) ('Pheochromocytoma', 'Disease', (0, 16)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (238, 254)) ('neoplasia', 'Phenotype', 'HP:0002664', (118, 127)) ('renal cell carcinoma', 'Disease', (21, 41)) ('Von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (180, 205)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (21, 41)) ('pheochromocytoma-paraganglioma syndromes', 'Disease', 'MESH:D010673', (238, 278)) 58937 28944243 About 30% of PPGLs are attributed to germline mutations. ('germline mutations', 'Var', (37, 55)) ('PPGLs', 'Chemical', '-', (13, 18)) ('attributed', 'Reg', (23, 33)) ('PGL', 'Phenotype', 'HP:0002668', (14, 17)) ('PPGLs', 'Disease', (13, 18)) 58949 28944243 Additionally, postoperative PPGLs have a 15% relapse risk, with most being metastatic recurrence that can occur decades after surgery, implying a need for effective screening and cheap long-term follow-up management (Amar et al. ('PGL', 'Phenotype', 'HP:0002668', (29, 32)) ('metastatic recurrence', 'Disease', (75, 96)) ('postoperative', 'Var', (14, 27)) ('PPGLs', 'Chemical', '-', (28, 33)) ('PPGLs', 'Gene', (28, 33)) ('relapse', 'CPA', (45, 52)) 58984 28944243 This progressively decreased to 32.1% (9/28), 10.6% (5/47), and 12.8% (5/39) patients from diagnosis age groups >=20-<40, >=40-<60, and >=60 years old, respectively. ('patients', 'Species', '9606', (77, 85)) ('>=40-<60', 'Var', (122, 130)) ('>=20-<40', 'Var', (112, 120)) 58988 28944243 Three SDHB missense mutations were found; twice in codon 136 of exon 1 and a frameshift mutation in codon 620 of exon 6. ('SDHB', 'Gene', (6, 10)) ('SDHB', 'Gene', '6390', (6, 10)) ('frameshift mutation in codon', 'Var', (77, 105)) 58990 28944243 Two SDHD mutations were also found; these consisted of frameshifts at codon 10 of exon 1 and codon 242 of exon 3, respectively. ('SDHD', 'Disease', (4, 8)) ('SDHD', 'Disease', 'None', (4, 8)) ('frameshifts at codon 10', 'Var', (55, 78)) ('codon 242', 'Var', (93, 102)) 58991 28944243 Two VHL mutations were found with both having a missense at codon 191 of exon 1 and codon 499 of exon 3, respectively. ('VHL', 'Disease', (4, 7)) ('missense at codon 191', 'Var', (48, 69)) ('VHL', 'Disease', 'MESH:D006623', (4, 7)) ('codon 499', 'Var', (84, 93)) 58995 28944243 2014) However, only three-quarter of patients with malignant PPGLs and a quarter of patients in the study cohort had any functional imaging done, displaying the lack of uptake of the available imaging modality and variable practice among clinicians in the absence of genetic analysis to guide specific surveillance and postoperative management. ('malignant', 'Var', (51, 60)) ('PPGLs', 'Chemical', '-', (61, 66)) ('patients', 'Species', '9606', (37, 45)) ('patients', 'Species', '9606', (84, 92)) ('PPGLs', 'Gene', (61, 66)) ('PGL', 'Phenotype', 'HP:0002668', (62, 65)) 58997 28944243 While most PPGLs have a low risk of malignancy, patients with SDHB mutations have higher risks of malignancy, and conversely patients with RET germline mutations have a much lower risk of malignancy (Amar et al. ('RET', 'Gene', (139, 142)) ('SDHB', 'Gene', '6390', (62, 66)) ('malignancy', 'Disease', (188, 198)) ('malignancy', 'Disease', (98, 108)) ('mutations', 'Var', (67, 76)) ('malignancy', 'Disease', 'MESH:D009369', (98, 108)) ('PPGLs', 'Chemical', '-', (11, 16)) ('RET', 'Gene', '5979', (139, 142)) ('PGL', 'Phenotype', 'HP:0002668', (12, 15)) ('malignancy', 'Disease', 'MESH:D009369', (36, 46)) ('malignancy', 'Disease', 'MESH:D009369', (188, 198)) ('patients', 'Species', '9606', (48, 56)) ('malignancy', 'Disease', (36, 46)) ('SDHB', 'Gene', (62, 66)) ('patients', 'Species', '9606', (125, 133)) 59000 28944243 This is particularly seen in SDH mutations, where family history may be absent (Welander et al. ('SDH', 'Gene', '6390', (29, 32)) ('mutations', 'Var', (33, 42)) ('SDH', 'Gene', (29, 32)) 59010 28944243 reported finding germline mutations for one fifth of those falling in this age group with sporadic PPGLs (Neumann et al. ('falling', 'Phenotype', 'HP:0002527', (59, 66)) ('PPGLs', 'Chemical', '-', (99, 104)) ('germline mutations', 'Var', (17, 35)) ('PGL', 'Phenotype', 'HP:0002668', (100, 103)) ('PPGLs', 'Disease', (99, 104)) 59056 26487970 The results showed p.C634R mutation in exon 11 and polymorphisms in p.A432A, p.G691S, and p.S904S. ('p.C634R', 'Mutation', 'rs75076352', (19, 26)) ('p.C634R', 'Var', (19, 26)) ('p.S904S', 'Mutation', 'rs1800863', (90, 97)) ('p.G691S', 'Var', (77, 84)) ('p.A432A', 'Var', (68, 75)) ('p.G691S', 'Mutation', 'rs1799939', (77, 84)) ('p.S904S', 'Var', (90, 97)) ('p.A432A', 'SUBSTITUTION', 'None', (68, 75)) 59059 26487970 Germline RET mutations are generally observed in 98% of patients with MEN2A. ('patients', 'Species', '9606', (56, 64)) ('observed', 'Reg', (37, 45)) ('MEN2A', 'Gene', (70, 75)) ('RET', 'Gene', '5979', (9, 12)) ('MEN2A', 'Gene', '5979', (70, 75)) ('mutations', 'Var', (13, 22)) ('RET', 'Gene', (9, 12)) 59061 26487970 RET mutations are mostly missense and located in the extracellular domain of RET (exons 10 and 11) and are correlated with high frequency of pheochromocytoma (more than 50%). ('RET', 'Gene', (77, 80)) ('pheochromocytoma', 'Disease', (141, 157)) ('missense', 'Var', (25, 33)) ('RET', 'Gene', '5979', (0, 3)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (141, 157)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (141, 157)) ('RET', 'Gene', (0, 3)) ('RET', 'Gene', '5979', (77, 80)) ('correlated with', 'Reg', (107, 122)) ('mutations', 'Var', (4, 13)) 59064 26487970 Mutations at codon 634 of the RET gene correspond to a C classification, which is associated with high risk of aggressive MTC. ('RET', 'Gene', (30, 33)) ('MTC', 'Phenotype', 'HP:0002865', (122, 125)) ('associated', 'Reg', (82, 92)) ('C classification', 'Disease', (55, 71)) ('aggressive MTC', 'Disease', (111, 125)) ('RET', 'Gene', '5979', (30, 33)) ('Mutations at codon 634', 'Var', (0, 22)) 59091 9735667 The serum norepinephrine and epinephrine levels were 4791 pg/ml (normal value; 100~410 pg/ml) and 1657 pg/ml (normal value; a120 pg/ml), respectively. ('serum norepinephrine', 'MPA', (4, 24)) ('epinephrine', 'Chemical', 'MESH:D004837', (29, 40)) ('epinephrine', 'Chemical', 'MESH:D004837', (13, 24)) ('1657 pg/ml', 'Var', (98, 108)) ('epinephrine levels', 'MPA', (29, 47)) ('norepinephrine', 'Chemical', 'MESH:D009638', (10, 24)) 59164 26104921 Despite the relatively high rate of Ki67 positivity, complete tumor resection resulted in favorable clinical outcomes. ('tumor', 'Phenotype', 'HP:0002664', (62, 67)) ('positivity', 'Var', (41, 51)) ('tumor', 'Disease', (62, 67)) ('Ki67', 'Protein', (36, 40)) ('Ki67', 'Chemical', '-', (36, 40)) ('tumor', 'Disease', 'MESH:D009369', (62, 67)) 59213 26104921 suggested that routine analysis for mutations of the RET, VHL, SDHD, and SDHB genes in patients with apparently sporadic presentation of pheochromocytoma should be considered as the clinical standard of care. ('RET', 'Gene', (53, 56)) ('mutations', 'Var', (36, 45)) ('SDHB', 'Gene', '6390', (73, 77)) ('pheochromocytoma', 'Disease', (137, 153)) ('VHL', 'Gene', (58, 61)) ('RET', 'Gene', '5979', (53, 56)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (137, 153)) ('SDHD', 'Gene', '6392', (63, 67)) ('VHL', 'Gene', '7428', (58, 61)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (137, 153)) ('patients', 'Species', '9606', (87, 95)) ('SDHD', 'Gene', (63, 67)) ('SDHB', 'Gene', (73, 77)) 59214 26104921 However, whether these genetic alterations are also associated with composite pheochromocytoma remains unclear. ('pheochromocytoma', 'Disease', (78, 94)) ('associated', 'Reg', (52, 62)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (78, 94)) ('genetic alterations', 'Var', (23, 42)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (78, 94)) 59230 26104921 In the present cases, the rate of Ki67-positive cells was 6.2, 4.3, and 1.0%, respectively, and all patients remained free of tumor recurrence for up to 6 years postsurgery without adjuvant chemotherapy or radiation. ('Ki67-positive cells', 'Var', (34, 53)) ('Ki67', 'Chemical', '-', (34, 38)) ('tumor', 'Disease', 'MESH:D009369', (126, 131)) ('patients', 'Species', '9606', (100, 108)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('tumor', 'Disease', (126, 131)) 59334 24832166 Tumor cells from 17 of 24 TSC-associated PRCC showed strong, diffuse labeling for CA-IX (100%), CK7 (94%), vimentin (88%), CD10 (83%), and were uniformly negative for succinate dehydrogenase subunit B (SDHB), TFE3 and AMACR. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('vimentin', 'Gene', '7431', (107, 115)) ('succinate dehydrogenase subunit B', 'Gene', (167, 200)) ('vimentin', 'Gene', (107, 115)) ('AMACR', 'Gene', (218, 223)) ('TFE3', 'Gene', (209, 213)) ('CD10', 'Var', (123, 127)) ('CK7', 'Gene', (96, 99)) ('TFE3', 'Gene', '7030', (209, 213)) ('SDHB', 'Gene', '6390', (202, 206)) ('AMACR', 'Gene', '23600', (218, 223)) ('CK7', 'Gene', '3855', (96, 99)) ('RCC', 'Phenotype', 'HP:0005584', (42, 45)) ('TSC', 'Gene', (26, 29)) ('PRCC', 'Gene', (41, 45)) ('CA-IX', 'Gene', (82, 87)) ('TSC', 'Gene', '7248;7249', (26, 29)) ('SDHB', 'Gene', (202, 206)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (167, 200)) ('CA-IX', 'Gene', '768', (82, 87)) ('PRCC', 'Gene', '5546', (41, 45)) 59340 24832166 A disease-causing mutation in either TSC1 (Chromosome 9q34), encoding the protein hamartin, or in TSC2 (chromosome 16p13), encoding the protein tuberin, can be identified in most patients with TSC. ('tuberin', 'Gene', (144, 151)) ('disease-causing', 'Reg', (2, 17)) ('hamartin', 'Gene', (82, 90)) ('TSC1', 'Gene', '7248', (37, 41)) ('TSC', 'Gene', (98, 101)) ('TSC', 'Gene', (37, 40)) ('TSC1', 'Gene', (37, 41)) ('TSC', 'Gene', '7248;7249', (193, 196)) ('tuberin', 'Gene', '7249', (144, 151)) ('mutation', 'Var', (18, 26)) ('patients', 'Species', '9606', (179, 187)) ('TSC', 'Gene', '7248;7249', (37, 40)) ('TSC', 'Gene', (193, 196)) ('TSC2', 'Gene', '7249', (98, 102)) ('TSC2', 'Gene', (98, 102)) ('TSC', 'Gene', '7248;7249', (98, 101)) ('hamartin', 'Gene', '7248', (82, 90)) 59350 24832166 Absence of von Hippel-Lindau (VHL) gene mutation and loss of heterozygosity (LOH) was reported in 6 clear cell TSC-associated RCCs, in contrast to cytogenetic findings in sporadic RCC of the general non-TSC population, suggesting that clear cell TSC-associated RCC develops independently of canonical pathways. ('RCC', 'Disease', 'MESH:C538614', (261, 264)) ('RCC', 'Disease', (180, 183)) ('RCC', 'Phenotype', 'HP:0005584', (180, 183)) ('VHL', 'Gene', (30, 33)) ('TSC', 'Gene', '7248;7249', (111, 114)) ('RCC', 'Disease', 'MESH:C538614', (126, 129)) ('von Hippel-Lindau', 'Disease', (11, 28)) ('RCC', 'Disease', 'MESH:C538614', (180, 183)) ('TSC', 'Gene', (203, 206)) ('VHL', 'Gene', '7428', (30, 33)) ('RCCs', 'Phenotype', 'HP:0005584', (126, 130)) ('mutation', 'Var', (40, 48)) ('TSC', 'Gene', '7248;7249', (203, 206)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (11, 28)) ('TSC', 'Gene', (246, 249)) ('RCC', 'Disease', (261, 264)) ('RCC', 'Phenotype', 'HP:0005584', (261, 264)) ('TSC', 'Gene', '7248;7249', (246, 249)) ('RCC', 'Disease', (126, 129)) ('RCC', 'Phenotype', 'HP:0005584', (126, 129)) ('Absence', 'NegReg', (0, 7)) ('TSC', 'Gene', (111, 114)) 59459 24832166 In general, the tumors were reactive for PAX8, CD117 and CD10, and negative for TFE3, HMB45, and CA-IX. ('CA-IX', 'Gene', (97, 102)) ('tumors', 'Phenotype', 'HP:0002664', (16, 22)) ('TFE3', 'Gene', (80, 84)) ('PAX8', 'Gene', (41, 45)) ('tumor', 'Phenotype', 'HP:0002664', (16, 21)) ('TFE3', 'Gene', '7030', (80, 84)) ('tumors', 'Disease', 'MESH:D009369', (16, 22)) ('CA-IX', 'Gene', '768', (97, 102)) ('CD10', 'Var', (57, 61)) ('CD117', 'Gene', '3815', (47, 52)) ('tumors', 'Disease', (16, 22)) ('PAX8', 'Gene', '7849', (41, 45)) ('CD117', 'Gene', (47, 52)) 59496 24832166 Each of the four known RCC subtypes--clear cell RCC, type 1 papillary RCC, Xp11 translocation RCC, clear cell (tubulo) papillary RCC--share some morphological and immunological features with the TSC-associated papillary RCC (Table 4). ('RCC', 'Disease', 'MESH:C538614', (94, 97)) ('RCC', 'Disease', 'MESH:C538614', (48, 51)) ('RCC', 'Disease', (70, 73)) ('RCC', 'Phenotype', 'HP:0005584', (70, 73)) ('RCC', 'Disease', 'MESH:C538614', (23, 26)) ('RCC', 'Disease', 'MESH:C538614', (220, 223)) ('Xp11 translocation', 'Var', (75, 93)) ('RCC', 'Disease', 'MESH:C538614', (70, 73)) ('papillary RCC', 'Disease', 'MESH:C538614', (210, 223)) ('RCC', 'Disease', (129, 132)) ('TSC', 'Gene', (195, 198)) ('papillary RCC', 'Disease', (210, 223)) ('RCC', 'Phenotype', 'HP:0005584', (129, 132)) ('TSC', 'Gene', '7248;7249', (195, 198)) ('RCC', 'Disease', 'MESH:C538614', (129, 132)) ('RCC', 'Disease', (48, 51)) ('papillary RCC', 'Disease', 'MESH:C538614', (119, 132)) ('RCC', 'Phenotype', 'HP:0005584', (48, 51)) ('RCC', 'Disease', (94, 97)) ('RCC', 'Phenotype', 'HP:0005584', (94, 97)) ('papillary RCC', 'Disease', (119, 132)) ('RCC', 'Phenotype', 'HP:0005584', (23, 26)) ('RCC', 'Disease', (23, 26)) ('papillary RCC', 'Disease', 'MESH:C538614', (60, 73)) ('papillary RCC', 'Disease', (60, 73)) ('RCC', 'Disease', (220, 223)) 59500 24832166 similarly found neither VHL loss of heterozygosity nor other VHL gene mutation in any of their six clear cell RCC tumors from TSC patients. ('RCC', 'Phenotype', 'HP:0005584', (110, 113)) ('loss', 'Var', (28, 32)) ('VHL', 'Gene', '7428', (24, 27)) ('RCC tumors', 'Disease', (110, 120)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('TSC', 'Gene', (126, 129)) ('patients', 'Species', '9606', (130, 138)) ('VHL', 'Gene', (61, 64)) ('RCC tumors', 'Disease', 'MESH:C538614', (110, 120)) ('tumors', 'Phenotype', 'HP:0002664', (114, 120)) ('VHL', 'Gene', (24, 27)) ('VHL', 'Gene', '7428', (61, 64)) ('TSC', 'Gene', '7248;7249', (126, 129)) 59502 24832166 Xp11 translocation RCC is another renal tumor in the differential diagnosis. ('renal tumor', 'Disease', 'MESH:D007674', (34, 45)) ('renal tumor', 'Phenotype', 'HP:0009726', (34, 45)) ('Xp11 translocation', 'Var', (0, 18)) ('renal tumor', 'Disease', (34, 45)) ('RCC', 'Disease', 'MESH:C538614', (19, 22)) ('RCC', 'Disease', (19, 22)) ('RCC', 'Phenotype', 'HP:0005584', (19, 22)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) 59504 24832166 Nuclear labeling for TFE3 protein by immunohistochemistry is a characteristic feature of Xp11 translocation carcinoma and was not identified in any of the neoplasm in our series. ('TFE3', 'Gene', '7030', (21, 25)) ('carcinoma', 'Phenotype', 'HP:0030731', (108, 117)) ('neoplasm', 'Disease', (155, 163)) ('Xp11 translocation', 'Var', (89, 107)) ('neoplasm', 'Phenotype', 'HP:0002664', (155, 163)) ('neoplasm', 'Disease', 'MESH:D009369', (155, 163)) ('TFE3', 'Gene', (21, 25)) ('carcinoma', 'Disease', (108, 117)) ('Nuclear labeling', 'MPA', (0, 16)) ('protein', 'Protein', (26, 33)) ('carcinoma', 'Disease', 'MESH:D009369', (108, 117)) 59507 24832166 Psammoma bodies that are common in Xp11 translocation RCC were also not seen in any of these TSC-associated tumors. ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('RCC', 'Disease', (54, 57)) ('TSC', 'Gene', '7248;7249', (93, 96)) ('RCC', 'Phenotype', 'HP:0005584', (54, 57)) ('Xp11 translocation', 'Var', (35, 53)) ('RCC', 'Disease', 'MESH:C538614', (54, 57)) ('tumors', 'Disease', (108, 114)) ('tumors', 'Disease', 'MESH:D009369', (108, 114)) ('tumors', 'Phenotype', 'HP:0002664', (108, 114)) ('TSC', 'Gene', (93, 96)) ('Psammoma bodies', 'Disease', (0, 15)) 59528 24832166 Together, less than 20 patients with any SDHx gene mutations have been reported thus far, and mostly with a personal and/or family history of PHEO/PGL. ('PHEO', 'Chemical', '-', (142, 146)) ('mutations', 'Var', (51, 60)) ('patients', 'Species', '9606', (23, 31)) ('SDH', 'Gene', (41, 44)) ('SDH', 'Gene', '6390', (41, 44)) 59530 24832166 Therefore, immunohistochemistry for SDHB is negative whenever there is mutation/inactivation of SDHA, SDHB, SDHC, SDHD, or SDHAF2. ('SDHAF2', 'Gene', '54949', (123, 129)) ('SDHAF2', 'Gene', (123, 129)) ('SDHD', 'Gene', (114, 118)) ('SDHB', 'Gene', '6390', (36, 40)) ('SDHD', 'Gene', '6392', (114, 118)) ('SDHB', 'Gene', (36, 40)) ('SDHA', 'Gene', (96, 100)) ('SDHB', 'Gene', '6390', (102, 106)) ('SDHC', 'Gene', (108, 112)) ('SDHA', 'Gene', '6389', (123, 127)) ('SDHB', 'Gene', (102, 106)) ('SDHC', 'Gene', '6391', (108, 112)) ('SDHA', 'Gene', '6389', (96, 100)) ('SDHA', 'Gene', (123, 127)) ('mutation/inactivation', 'Var', (71, 92)) 59531 24832166 Negative staining for SDHB has been quite reliable in identifying germline mutation of the SDH B, C and D subunits in PHEO/PGL. ('SDH B', 'Gene', (91, 96)) ('SDH B', 'Gene', '6390', (91, 96)) ('PHEO', 'Chemical', '-', (118, 122)) ('SDHB', 'Gene', '6390', (22, 26)) ('SDHB', 'Gene', (22, 26)) ('germline mutation', 'Var', (66, 83)) 59534 24832166 The absence of a family history does not formally exclude the possibility of paraganglioma syndromes given the age related penetrance of SDHx gene mutation and phenotypic heterogeneity. ('paraganglioma', 'Phenotype', 'HP:0002668', (77, 90)) ('mutation', 'Var', (147, 155)) ('SDH', 'Gene', (137, 140)) ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (77, 100)) ('SDH', 'Gene', '6390', (137, 140)) ('paraganglioma syndromes', 'Disease', (77, 100)) 59536 24832166 Renal tumors associated with SDHx mutations from earlier reports were classified as clear cell, chromophobe, papillary, and unclassified RCC, or oncocytoma, without detailed description or illustration of morphologic features. ('oncocytoma', 'Disease', (145, 155)) ('Renal tumors', 'Disease', (0, 12)) ('associated', 'Reg', (13, 23)) ('oncocytoma', 'Disease', 'MESH:D018249', (145, 155)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('SDH', 'Gene', (29, 32)) ('Renal tumors', 'Disease', 'MESH:D007674', (0, 12)) ('RCC', 'Phenotype', 'HP:0005584', (137, 140)) ('SDH', 'Gene', '6390', (29, 32)) ('Renal tumors', 'Phenotype', 'HP:0009726', (0, 12)) ('RCC', 'Disease', 'MESH:C538614', (137, 140)) ('papillary', 'Disease', (109, 118)) ('RCC', 'Disease', (137, 140)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('mutations', 'Var', (34, 43)) ('clear cell', 'Disease', (84, 94)) ('chromophobe', 'Disease', (96, 107)) 59540 24832166 It is known that lack of SDH enzyme activity results in abnormal hypoxia signaling and may trigger tumor formation. ('trigger', 'Reg', (91, 98)) ('tumor', 'Disease', (99, 104)) ('SDH', 'Gene', (25, 28)) ('activity', 'MPA', (36, 44)) ('lack', 'Var', (17, 21)) ('tumor', 'Disease', 'MESH:D009369', (99, 104)) ('hypoxia', 'Disease', (65, 72)) ('hypoxia', 'Disease', 'MESH:D000860', (65, 72)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('results in', 'Reg', (45, 55)) ('SDH', 'Gene', '6390', (25, 28)) 59543 24832166 This effect may contribute to carcinogenesis in these tumors in the absence of VHL mutation or chromosome 3p loss, and explain the diffuse membranous IHC labeling for CA-IX we observed. ('VHL', 'Gene', '7428', (79, 82)) ('contribute', 'Reg', (16, 26)) ('tumors', 'Disease', 'MESH:D009369', (54, 60)) ('carcinogenesis', 'Disease', 'MESH:D063646', (30, 44)) ('chromosome', 'Gene', (95, 105)) ('carcinogenesis', 'Disease', (30, 44)) ('CA-IX', 'Gene', (167, 172)) ('loss', 'NegReg', (109, 113)) ('mutation', 'Var', (83, 91)) ('tumors', 'Phenotype', 'HP:0002664', (54, 60)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) ('VHL', 'Gene', (79, 82)) ('CA-IX', 'Gene', '768', (167, 172)) ('tumors', 'Disease', (54, 60)) 59545 24832166 SDHx germline mutation seems quite unlikely since these patients had no features of SDH genetic syndromes, and the co-existence of TSC1 or TSC2 plus SDHx germline gene mutations would be an extremely rare event to recur in this clustered fashion by random chance. ('patients', 'Species', '9606', (56, 64)) ('TSC1', 'Gene', (131, 135)) ('SDH genetic syndromes', 'Disease', 'MESH:D030342', (84, 105)) ('SDH', 'Gene', '6390', (149, 152)) ('SDH', 'Gene', (0, 3)) ('TSC2', 'Gene', '7249', (139, 143)) ('SDH', 'Gene', '6390', (84, 87)) ('SDH', 'Gene', (149, 152)) ('SDH', 'Gene', '6390', (0, 3)) ('TSC2', 'Gene', (139, 143)) ('SDH genetic syndromes', 'Disease', (84, 105)) ('TSC1', 'Gene', '7248', (131, 135)) ('SDH', 'Gene', (84, 87)) ('mutations', 'Var', (168, 177)) 59546 24832166 One possible mechanism may be the acquisition of somatic mutations that inactivate one or more of the SDHx genes, hence contributing to tumorigenesis. ('contributing', 'Reg', (120, 132)) ('SDH', 'Gene', '6390', (102, 105)) ('SDH', 'Gene', (102, 105)) ('tumor', 'Disease', 'MESH:D009369', (136, 141)) ('mutations', 'Var', (57, 66)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('inactivate', 'NegReg', (72, 82)) ('tumor', 'Disease', (136, 141)) 59549 24832166 If germline SDHx mutation is found in this group of tumors, it poses a possibility that two tumor suppressor genes (SDH and TSC) may together contribute to one oncogenic event. ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('TSC', 'Gene', '7248;7249', (124, 127)) ('SDH', 'Gene', (116, 119)) ('tumor', 'Disease', (52, 57)) ('tumor', 'Disease', 'MESH:D009369', (92, 97)) ('tumors', 'Phenotype', 'HP:0002664', (52, 58)) ('mutation', 'Var', (17, 25)) ('tumors', 'Disease', (52, 58)) ('tumors', 'Disease', 'MESH:D009369', (52, 58)) ('SDH', 'Gene', '6390', (12, 15)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('TSC', 'Gene', (124, 127)) ('tumor', 'Disease', (92, 97)) ('SDH', 'Gene', (12, 15)) ('tumor', 'Disease', 'MESH:D009369', (52, 57)) ('SDH', 'Gene', '6390', (116, 119)) ('contribute', 'Reg', (142, 152)) 59555 24832166 Interestingly, renal tumors with HOCT morphology are identified in both TSC and Birt-Hogg Dube syndromes in which mutations in the TSC and folliculin genes, respectively, result in downstream mTOR activation. ('TSC', 'Gene', (72, 75)) ('renal tumors', 'Disease', 'MESH:D007674', (15, 27)) ('mutations', 'Var', (114, 123)) ('Birt-Hogg Dube syndrome', 'Disease', 'MESH:D058249', (80, 103)) ('renal tumors', 'Disease', (15, 27)) ('activation', 'PosReg', (197, 207)) ('tumors', 'Phenotype', 'HP:0002664', (21, 27)) ('tumor', 'Phenotype', 'HP:0002664', (21, 26)) ('TSC', 'Gene', '7248;7249', (72, 75)) ('TSC', 'Gene', '7248;7249', (131, 134)) ('renal tumor', 'Phenotype', 'HP:0009726', (15, 26)) ('mTOR', 'Gene', (192, 196)) ('mTOR', 'Gene', '2475', (192, 196)) ('Birt-Hogg Dube syndrome', 'Disease', (80, 103)) ('renal tumors', 'Phenotype', 'HP:0009726', (15, 27)) ('folliculin', 'Gene', (139, 149)) ('TSC', 'Gene', (131, 134)) 59558 24832166 Similar to other well-defined hereditary renal cancer syndromes in which distinct RCC morphologic features are associated with specific mutations, these neoplasms, in addition to angiomyolipomas may help to identify morphologic clues to renal neoplasms associated with TSC. ('neoplasms', 'Phenotype', 'HP:0002664', (243, 252)) ('TSC', 'Gene', '7248;7249', (269, 272)) ('mutations', 'Var', (136, 145)) ('neoplasms', 'Disease', (153, 162)) ('neoplasm', 'Phenotype', 'HP:0002664', (243, 251)) ('renal neoplasms', 'Disease', 'MESH:D007674', (237, 252)) ('hereditary renal cancer syndromes', 'Disease', 'MESH:D007680', (30, 63)) ('angiomyolipoma', 'Phenotype', 'HP:0006772', (179, 193)) ('renal neoplasms', 'Disease', (237, 252)) ('RCC', 'Disease', (82, 85)) ('RCC', 'Phenotype', 'HP:0005584', (82, 85)) ('renal neoplasms', 'Phenotype', 'HP:0009726', (237, 252)) ('cancer', 'Phenotype', 'HP:0002664', (47, 53)) ('neoplasms', 'Disease', 'MESH:D009369', (243, 252)) ('neoplasms', 'Phenotype', 'HP:0002664', (153, 162)) ('angiomyolipomas', 'Disease', 'MESH:D018207', (179, 194)) ('renal cancer', 'Phenotype', 'HP:0009726', (41, 53)) ('RCC', 'Disease', 'MESH:C538614', (82, 85)) ('neoplasms', 'Disease', (243, 252)) ('neoplasm', 'Phenotype', 'HP:0002664', (153, 161)) ('angiomyolipomas', 'Disease', (179, 194)) ('hereditary renal cancer syndromes', 'Disease', (30, 63)) ('neoplasms', 'Disease', 'MESH:D009369', (153, 162)) ('TSC', 'Gene', (269, 272)) ('renal neoplasm', 'Phenotype', 'HP:0009726', (237, 251)) 59583 19672813 For instance, only 3-5% of PCC, related to a MEN2 and a mutation of the RET oncogene, show a malignant transformation. ('PCC', 'Phenotype', 'HP:0002666', (27, 30)) ('malignant transformation', 'CPA', (93, 117)) ('RET', 'Gene', '5979', (72, 75)) ('PCC', 'Disease', (27, 30)) ('mutation', 'Var', (56, 64)) ('RET', 'Gene', (72, 75)) 59585 19672813 This high risk of malignancy in patients with PGL4 is caused by a mutation of the gene encoding succinate dehydrogenase, subunit B (SDHB). ('PGL4', 'Gene', (46, 50)) ('patients', 'Species', '9606', (32, 40)) ('PGL4', 'Gene', '6390', (46, 50)) ('SDHB', 'Gene', (132, 136)) ('caused by', 'Reg', (54, 63)) ('succinate dehydrogenase, subunit B', 'Gene', '6390', (96, 130)) ('malignancy', 'Disease', 'MESH:D009369', (18, 28)) ('malignancy', 'Disease', (18, 28)) ('mutation', 'Var', (66, 74)) ('SDHB', 'Gene', '6390', (132, 136)) 59639 19672813 Since 1983, several studies have investigated the therapeutic option of radiolabeled MIBG in the treatment of malignant neuroendocrine tumors using either single or cumulative doses of 131I-MIBG, with a variable total dosage. ('131I-MIBG', 'Chemical', '-', (185, 194)) ('MIBG', 'Chemical', '-', (85, 89)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (120, 141)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('131I-MIBG', 'Var', (185, 194)) ('malignant neuroendocrine tumors', 'Disease', 'MESH:D018358', (110, 141)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('MIBG', 'Chemical', '-', (190, 194)) ('malignant neuroendocrine tumors', 'Disease', (110, 141)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (120, 140)) 59640 19672813 A retrospective analysis of 19 patients with malignant PCC or paraganglioma revealed an objective tumor response in 47% after treatment with 131I-MIBG with a median initial dose of 7.4 GBq (200 mCi) and a median cumulative dose of 22.2 GBq (600 mCi). ('131I-MIBG', 'Chemical', '-', (141, 150)) ('GBq', 'Chemical', '-', (185, 188)) ('tumor', 'Disease', 'MESH:D009369', (98, 103)) ('PCC', 'Phenotype', 'HP:0002666', (55, 58)) ('paraganglioma', 'Phenotype', 'HP:0002668', (62, 75)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('GBq', 'Chemical', '-', (236, 239)) ('paraganglioma', 'Disease', (62, 75)) ('patients', 'Species', '9606', (31, 39)) ('tumor', 'Disease', (98, 103)) ('131I-MIBG', 'Var', (141, 150)) ('paraganglioma', 'Disease', 'MESH:D010235', (62, 75)) 59643 19672813 Despite a lack of complete tumor response, a palliative treatment effect of 131I-MIBG therapy has been noted. ('131I-MIBG', 'Var', (76, 85)) ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('tumor', 'Disease', (27, 32)) ('131I-MIBG', 'Chemical', '-', (76, 85)) ('tumor', 'Disease', 'MESH:D009369', (27, 32)) 59644 19672813 published data from 28 patients treated with 131I-MIBG and showed a partial remission of tumor size in 8 patients and a biochemical PR in 12 patients. ('patients', 'Species', '9606', (105, 113)) ('131I-MIBG', 'Chemical', '-', (45, 54)) ('patients', 'Species', '9606', (23, 31)) ('tumor', 'Disease', (89, 94)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) ('131I-MIBG', 'Var', (45, 54)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('patients', 'Species', '9606', (141, 149)) 59648 19672813 Treatment with high-dose 131I-MIBG in a number of patients resulted in an objective tumor response in 30% of patients, stabilization of disease in 57% of patients, and progression of disease in 13% of patients. ('patients', 'Species', '9606', (201, 209)) ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('131I-MIBG', 'Chemical', '-', (25, 34)) ('patients', 'Species', '9606', (50, 58)) ('patients', 'Species', '9606', (109, 117)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('patients', 'Species', '9606', (154, 162)) ('stabilization', 'MPA', (119, 132)) ('tumor', 'Disease', (84, 89)) ('131I-MIBG', 'Var', (25, 34)) 59662 19672813 According to this study, treatment with high-dose of 131I-MIBG produced a sustained CR, PR, or SD in 67% of patients, with tolerable toxicity. ('131I-MIBG', 'Chemical', '-', (53, 62)) ('toxicity', 'Disease', 'MESH:D064420', (133, 141)) ('toxicity', 'Disease', (133, 141)) ('131I-MIBG', 'Var', (53, 62)) ('patients', 'Species', '9606', (108, 116)) ('SD', 'Disease', 'MESH:D029461', (95, 97)) 59664 19672813 Combination of 131I-MIBG therapy with chemotherapy did not show any convincing results, but an increased toxicity, and cannot be recommended. ('131I-MIBG', 'Var', (15, 24)) ('toxicity', 'Disease', 'MESH:D064420', (105, 113)) ('toxicity', 'Disease', (105, 113)) ('131I-MIBG', 'Chemical', '-', (15, 24)) 59676 19672813 Although the uptake intensity and number of tumor sites of MIBG-scan was superior to 111In-octreotide, seven foci were only found by octreotide scintigraphy. ('MIBG-scan', 'Var', (59, 68)) ('MIBG', 'Chemical', '-', (59, 63)) ('uptake intensity', 'MPA', (13, 29)) ('octreotide', 'Chemical', 'MESH:D015282', (133, 143)) ('octreotide', 'Chemical', 'MESH:D015282', (91, 101)) ('tumor', 'Disease', 'MESH:D009369', (44, 49)) ('111In-octreotide', 'Chemical', 'MESH:C094279', (85, 101)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('tumor', 'Disease', (44, 49)) 59693 19672813 A comparative analysis showed superior effects of treatment with SOM230 versus octreotide (OCT) in primary PCC cell cultures, concerning the reduction of catecholamine levels, modulation of cell growth, and apoptosis. ('catecholamine levels', 'MPA', (154, 174)) ('catecholamine', 'Chemical', 'MESH:D002395', (154, 167)) ('apoptosis', 'CPA', (207, 216)) ('cell growth', 'CPA', (190, 201)) ('SOM230', 'Var', (65, 71)) ('octreotide', 'Chemical', 'MESH:D015282', (79, 89)) ('OCT', 'Chemical', 'MESH:D015282', (91, 94)) ('reduction', 'NegReg', (141, 150)) ('PCC', 'Phenotype', 'HP:0002666', (107, 110)) 59716 19672813 However, CVD has been shown to produce partial remissions and in single cases complete remissions, to improve symptoms and rarely, to lead to tumor shrinkage that made surgical resection possible. ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('improve', 'PosReg', (102, 109)) ('CVD', 'Var', (9, 12)) ('tumor', 'Disease', (142, 147)) ('symptoms', 'MPA', (110, 118)) ('tumor', 'Disease', 'MESH:D009369', (142, 147)) 59737 19672813 This was confirmed by a small series study of 3 patients with malignant paraganglioma reporting one very good partial remission and 2 PR induced by a therapy with sunitinib at a standard dose (50 mg daily, 4 weeks on, 2 weeks off). ('malignant paraganglioma', 'Disease', (62, 85)) ('malignant paraganglioma', 'Disease', 'MESH:C565335', (62, 85)) ('sunitinib', 'Chemical', 'MESH:D000077210', (163, 172)) ('paraganglioma', 'Phenotype', 'HP:0002668', (72, 85)) ('50', 'Var', (193, 195)) ('patients', 'Species', '9606', (48, 56)) 59763 19672813 Featuring a moderate progression, these patients may benefit from a 131I-MIBG therapy, which can achieve substantial tumor responses and possibly an elimination of micrometastases. ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('metastases', 'Disease', (169, 179)) ('patients', 'Species', '9606', (40, 48)) ('tumor', 'Disease', (117, 122)) ('131I-MIBG', 'Var', (68, 77)) ('metastases', 'Disease', 'MESH:D009362', (169, 179)) ('131I-MIBG', 'Chemical', '-', (68, 77)) ('tumor', 'Disease', 'MESH:D009369', (117, 122)) 59766 19672813 Combination of 131I-MIBG therapy with chemotherapy did not show any benefit, but as it is accompanied by increased toxicity, it may not be recommended. ('131I-MIBG', 'Var', (15, 24)) ('toxicity', 'Disease', (115, 123)) ('toxicity', 'Disease', 'MESH:D064420', (115, 123)) ('131I-MIBG', 'Chemical', '-', (15, 24)) 59835 33805450 Hereditary GH-secreting pituitary adenoma (PA) can manifest as isolated tumours, familial isolated pituitary adenoma (FIPA) including cases with AIP mutations or GPR101 duplications (X-linked acrogigantism, XLAG) or can be a part of systemic diseases like multiple endocrine neoplasia type 1 or type 4, McCune-Albright syndrome, Carney complex or phaeochromocytoma/paraganglioma-pituitary adenoma association. ('GH-secreting pituitary adenoma', 'Disease', (11, 41)) ('neoplasia', 'Phenotype', 'HP:0002664', (275, 284)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (24, 41)) ('PA', 'Phenotype', 'HP:0002893', (120, 122)) ('glioma', 'Phenotype', 'HP:0009733', (372, 378)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (256, 284)) ('paraganglioma', 'Phenotype', 'HP:0002668', (365, 378)) ('isolated pituitary adenoma', 'Phenotype', 'HP:0011761', (90, 116)) ('tumours', 'Disease', (72, 79)) ('AIP', 'Gene', '9049', (145, 148)) ('multiple endocrine neoplasia', 'Disease', (256, 284)) ('familial isolated pituitary adenoma', 'Disease', 'MESH:C566321', (81, 116)) ('phaeochromocytoma/paraganglioma-pituitary adenoma', 'Disease', 'MESH:D010911', (347, 396)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (265, 284)) ('tumours', 'Phenotype', 'HP:0002664', (72, 79)) ('Carney complex', 'Disease', (329, 343)) ('systemic diseases', 'Disease', (233, 250)) ('tumours', 'Disease', 'MESH:D009369', (72, 79)) ('systemic diseases', 'Disease', 'MESH:D034721', (233, 250)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (379, 396)) ('AIP', 'Gene', (145, 148)) ('endocrine neoplasia type', 'Disease', 'MESH:D018761', (265, 289)) ('McCune-Albright syndrome', 'Disease', 'MESH:D005357', (303, 327)) ('tumour', 'Phenotype', 'HP:0002664', (72, 78)) ('GH-secreting pituitary adenoma', 'Disease', 'MESH:D049912', (11, 41)) ('GPR101', 'Gene', '83550', (162, 168)) ('endocrine neoplasia type', 'Disease', (265, 289)) ('phaeochromocytoma/paraganglioma-pituitary adenoma', 'Disease', (347, 396)) ('familial isolated pituitary adenoma', 'Disease', (81, 116)) ('GPR101', 'Gene', (162, 168)) ('duplications', 'Var', (169, 181)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (99, 116)) ('McCune-Albright syndrome', 'Disease', (303, 327)) ('XLAG', 'Chemical', '-', (207, 211)) ('PA', 'Phenotype', 'HP:0002893', (43, 45)) 59836 33805450 This review focuses on germline and somatic mutations predisposing to acromegaly and gigantism. ('acromegaly', 'Phenotype', 'HP:0000845', (70, 80)) ('gigantism', 'Disease', (85, 94)) ('acromegaly', 'Disease', (70, 80)) ('acromegaly', 'Disease', 'MESH:D000172', (70, 80)) ('mutations', 'Var', (44, 53)) 59848 33805450 Additionally, deficiency in the immunoglobulin superfamily member 1 (IGSF1), may result in somatotroph neurosecretory hyperfunction in adults. ('IGSF1', 'Gene', '3547', (69, 74)) ('IGSF1', 'Gene', (69, 74)) ('immunoglobulin superfamily member 1', 'Gene', (32, 67)) ('somatotroph neurosecretory hyperfunction', 'Disease', 'MESH:D049912', (91, 131)) ('immunoglobulin superfamily member 1', 'Gene', '3547', (32, 67)) ('result in', 'Reg', (81, 90)) ('deficiency', 'Var', (14, 24)) ('somatotroph neurosecretory hyperfunction', 'Disease', (91, 131)) 59849 33805450 Hereditary GH-secreting pituitary tumours can manifest as an isolated manifestation, called familial isolated pituitary adenoma (FIPA), due to either loss-of-function mutations in aryl hydrocarbon receptor interacting protein (AIP) or due to gain-of-function gene duplication in GPR101, causing XLAG. ('Hereditary GH-secreting pituitary tumours', 'Disease', 'MESH:D049912', (0, 41)) ('XLAG', 'Disease', (295, 299)) ('aryl hydrocarbon receptor interacting protein', 'Gene', (180, 225)) ('mutations', 'Var', (167, 176)) ('familial isolated pituitary adenoma', 'Disease', (92, 127)) ('gain-of-function', 'PosReg', (242, 258)) ('tumour', 'Phenotype', 'HP:0002664', (34, 40)) ('AIP', 'Gene', '9049', (227, 230)) ('tumours', 'Phenotype', 'HP:0002664', (34, 41)) ('Hereditary GH-secreting pituitary tumours', 'Disease', (0, 41)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (110, 127)) ('loss-of-function', 'NegReg', (150, 166)) ('AIP', 'Gene', (227, 230)) ('gene duplication', 'Var', (259, 275)) ('aryl hydrocarbon receptor interacting protein', 'Gene', '9049', (180, 225)) ('isolated pituitary adenoma', 'Phenotype', 'HP:0011761', (101, 127)) ('familial isolated pituitary adenoma', 'Disease', 'MESH:C566321', (92, 127)) ('PA', 'Phenotype', 'HP:0002893', (131, 133)) ('GPR101', 'Gene', '83550', (279, 285)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (24, 40)) ('GPR101', 'Gene', (279, 285)) ('XLAG', 'Chemical', '-', (295, 299)) 59853 33805450 However, due to de novo mutations or lack of known family history, often as a result of low disease penetrance, FIPA can also be present in apparently sporadic:so called simplex:patients or in patients with mosaicism. ('patients', 'Species', '9606', (193, 201)) ('PA', 'Phenotype', 'HP:0002893', (114, 116)) ('FIPA', 'Disease', (112, 116)) ('patients', 'Species', '9606', (178, 186)) ('low disease', 'Disease', 'MESH:D009800', (88, 99)) ('low disease', 'Disease', (88, 99)) ('mutations', 'Var', (24, 33)) ('simplex', 'Disease', (170, 177)) 59857 33805450 Depending on genetic background, FIPA can be divided into three subgroups: (i) AIP mutation-positive patients; (ii) families with duplication of GPR101 (all XLAG cases have GH excess, with the vast majority combined with prolactin excess); (iii) families with no identifiable genetic cause. ('duplication', 'Var', (130, 141)) ('patients', 'Species', '9606', (101, 109)) ('GH', 'Gene', '2688', (173, 175)) ('mutation-positive', 'Reg', (83, 100)) ('AIP', 'Gene', '9049', (79, 82)) ('GPR101', 'Gene', '83550', (145, 151)) ('PA', 'Phenotype', 'HP:0002893', (35, 37)) ('GPR101', 'Gene', (145, 151)) ('AIP', 'Gene', (79, 82)) ('XLAG', 'Chemical', '-', (157, 161)) ('prolactin excess', 'Phenotype', 'HP:0000870', (221, 237)) 59858 33805450 In our cohort of 318 AIP (and GPR101) mutation-negative FIPA families, 21% have homogenous acromegaly (representing 46% of the 147 homogeneous AIP negative families) and 32% has heterogenous FIPA with at least member with acromegaly (59% of the 171 heterogenous FIPA kindreds). ('acromegaly', 'Disease', 'MESH:D000172', (91, 101)) ('GPR101', 'Gene', '83550', (30, 36)) ('acromegaly', 'Disease', 'MESH:D000172', (222, 232)) ('mutation-negative', 'Var', (38, 55)) ('PA', 'Phenotype', 'HP:0002893', (264, 266)) ('GPR101', 'Gene', (30, 36)) ('PA', 'Phenotype', 'HP:0002893', (193, 195)) ('acromegaly', 'Disease', (222, 232)) ('AIP', 'Gene', (143, 146)) ('AIP', 'Gene', (21, 24)) ('acromegaly', 'Phenotype', 'HP:0000845', (91, 101)) ('AIP', 'Gene', '9049', (143, 146)) ('AIP', 'Gene', '9049', (21, 24)) ('acromegaly', 'Disease', (91, 101)) ('acromegaly', 'Phenotype', 'HP:0000845', (222, 232)) ('PA', 'Phenotype', 'HP:0002893', (58, 60)) 59862 33805450 Overview: AIP mutations can be identified in up to 40% of familial acromegaly and gigantism. ('gigantism', 'Disease', (82, 91)) ('familial acromegaly', 'Disease', (58, 77)) ('familial acromegaly', 'Disease', 'MESH:D000172', (58, 77)) ('acromegaly', 'Phenotype', 'HP:0000845', (67, 77)) ('AIP', 'Gene', '9049', (10, 13)) ('mutations', 'Var', (14, 23)) ('AIP', 'Gene', (10, 13)) 59863 33805450 However, AIP mutations are also identified in apparently sporadic (simplex) cases of PitNETs, mostly among young-onset patients. ('AIP', 'Gene', (9, 12)) ('AIP', 'Gene', '9049', (9, 12)) ('patients', 'Species', '9606', (119, 127)) ('PitNETs', 'Disease', (85, 92)) ('identified', 'Reg', (32, 42)) ('mutations', 'Var', (13, 22)) 59864 33805450 This phenomenon is observed due to low penetrance (12.5-30%) of the disease in AIP mutation carriers, rather than de novo mutations. ('mutation', 'Var', (83, 91)) ('AIP', 'Gene', (79, 82)) ('AIP', 'Gene', '9049', (79, 82)) 59866 33805450 In acromegaly/gigantism patients associated with AIP mutations, a higher GH level has been observed, with no difference in insulin growth factor 1 (IGF-1) level and prolactin co-secretion. ('acromegaly', 'Disease', (3, 13)) ('acromegaly', 'Phenotype', 'HP:0000845', (3, 13)) ('insulin growth factor 1', 'Gene', (123, 146)) ('GH', 'Gene', '2688', (73, 75)) ('mutations', 'Var', (53, 62)) ('acromegaly', 'Disease', 'MESH:D000172', (3, 13)) ('higher', 'PosReg', (66, 72)) ('patients', 'Species', '9606', (24, 32)) ('AIP', 'Gene', '9049', (49, 52)) ('insulin growth factor 1', 'Gene', '3479', (123, 146)) ('IGF-1', 'Gene', '3479', (148, 153)) ('AIP', 'Gene', (49, 52)) ('IGF-1', 'Gene', (148, 153)) 59876 33805450 These results highlight the clinical value of genetic testing for AIP mutations among acromegalic patients and their family members. ('mutations', 'Var', (70, 79)) ('acromegalic', 'Disease', 'MESH:D000172', (86, 97)) ('acromegalic', 'Disease', (86, 97)) ('patients', 'Species', '9606', (98, 106)) ('AIP', 'Gene', '9049', (66, 69)) ('AIP', 'Gene', (66, 69)) 59877 33805450 On the other hand, with the identification of small, non-functioning lesions, probably representing incidentalomas, screening can lead to increased anxiety and health care spending. ('increased', 'PosReg', (138, 147)) ('lead', 'Reg', (130, 134)) ('anxiety', 'Disease', (148, 155)) ('anxiety', 'Phenotype', 'HP:0000739', (148, 155)) ('lesions', 'Var', (69, 76)) ('anxiety', 'Disease', 'MESH:D001007', (148, 155)) ('non-functioning', 'NegReg', (53, 68)) 59882 33805450 The association between AIP mutations and pituitary tumours was found ten years later in 2006 in North-Finnish and Italian kindreds. ('AIP', 'Gene', '9049', (24, 27)) ('association', 'Interaction', (4, 15)) ('tumour', 'Phenotype', 'HP:0002664', (52, 58)) ('tumours', 'Phenotype', 'HP:0002664', (52, 59)) ('pituitary tumours', 'Disease', (42, 59)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (42, 58)) ('pituitary tumours', 'Disease', 'MESH:D010911', (42, 59)) ('mutations', 'Var', (28, 37)) ('AIP', 'Gene', (24, 27)) 59883 33805450 Subsequently, mutation in the AIP gene was noted as the most common genetic cause of FIPA, including familial acromegaly and gigantism cases. ('PA', 'Phenotype', 'HP:0002893', (87, 89)) ('AIP', 'Gene', '9049', (30, 33)) ('acromegaly', 'Phenotype', 'HP:0000845', (110, 120)) ('familial acromegaly', 'Disease', (101, 120)) ('AIP', 'Gene', (30, 33)) ('mutation', 'Var', (14, 22)) ('FIPA', 'Disease', (85, 89)) ('cause', 'Reg', (76, 81)) ('gigantism', 'Disease', (125, 134)) ('familial acromegaly', 'Disease', 'MESH:D000172', (101, 120)) 59884 33805450 Several sets of founder mutations have been identified, such as the original cohort of Finnish patients (Q14* mutation), but also Italian (R304*), English (a small duplication mutation) and Northern Irish (R304* independent from the Italian) cohorts, the latter providing a genetic background to the historical and folklore Irish giant legends. ('Q14*', 'SUBSTITUTION', 'None', (105, 109)) ('patients', 'Species', '9606', (95, 103)) ('R304*', 'SUBSTITUTION', 'None', (206, 211)) ('R304*', 'Var', (139, 144)) ('R304*', 'SUBSTITUTION', 'None', (139, 144)) ('Q14*', 'Var', (105, 109)) ('R304*', 'Var', (206, 211)) 59888 33805450 AIP mutation results in elevated concentrations of cAMP. ('concentrations', 'MPA', (33, 47)) ('mutation', 'Var', (4, 12)) ('cAMP', 'Chemical', '-', (51, 55)) ('AIP', 'Gene', '9049', (0, 3)) ('elevated', 'PosReg', (24, 32)) ('AIP', 'Gene', (0, 3)) 59889 33805450 Disrupting the cAMP pathway is an important factor contributing to pituitary tumourigenesis observed in CNC, MAS and XLAG. ('pituitary tumour', 'Disease', 'MESH:D010911', (67, 83)) ('cAMP', 'Chemical', '-', (15, 19)) ('XLAG', 'Chemical', '-', (117, 121)) ('cAMP pathway', 'Pathway', (15, 27)) ('Disrupting', 'Var', (0, 10)) ('CNC', 'Disease', (104, 107)) ('MAS', 'Disease', (109, 112)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (67, 83)) ('tumour', 'Phenotype', 'HP:0002664', (77, 83)) ('pituitary tumour', 'Disease', (67, 83)) 59890 33805450 Dysfunction of AIP protein leads to reduced Galphai-2 and Galphai-3 protein expression, which is responsible for inhibition of cAMP synthesis. ('Dysfunction', 'Var', (0, 11)) ('Galphai-3 protein', 'Protein', (58, 75)) ('AIP', 'Gene', (15, 18)) ('AIP', 'Gene', '9049', (15, 18)) ('cAMP', 'Chemical', '-', (127, 131)) ('expression', 'MPA', (76, 86)) ('Galphai-2', 'Protein', (44, 53)) ('reduced', 'NegReg', (36, 43)) 59893 33805450 While truncating mutations in AIP are obviously disease-causing, it is a challenge to predict pathogenicity of missense variants. ('disease-causing', 'Reg', (48, 63)) ('AIP', 'Gene', (30, 33)) ('truncating mutations', 'Var', (6, 26)) ('AIP', 'Gene', '9049', (30, 33)) 59894 33805450 Diagnosis: Genetic testing includes sequencing in tumour suppressor genes. ('tumour', 'Disease', 'MESH:D009369', (50, 56)) ('tumour', 'Disease', (50, 56)) ('tumour', 'Phenotype', 'HP:0002664', (50, 56)) ('sequencing', 'Var', (36, 46)) 59896 33805450 As most cases develop symptoms before the age of 30 years, in asymptomatic AIP mutation carriers, follow-up is suggested to be performed until this age. ('symptoms', 'MPA', (22, 30)) ('AIP', 'Gene', '9049', (75, 78)) ('AIP', 'Gene', (75, 78)) ('develop', 'Reg', (14, 21)) ('mutation', 'Var', (79, 87)) 59899 33805450 Patients with AIP mutation require more often multimodal approaches including radiotherapy and reoperation. ('AIP', 'Gene', (14, 17)) ('Patients', 'Species', '9606', (0, 8)) ('AIP', 'Gene', '9049', (14, 17)) ('mutation', 'Var', (18, 26)) 59924 33805450 To date, all females have been shown to have de novo germline GPR101 duplication, while mosaic mutations have been described in males except for a few familial cases with mother-to-son inheritance. ('GPR101', 'Gene', '83550', (62, 68)) ('GPR101', 'Gene', (62, 68)) ('duplication', 'Var', (69, 80)) 59925 33805450 The phenotype of patients with somatic and germline GPR101 duplication remains the same. ('duplication', 'Var', (59, 70)) ('patients', 'Species', '9606', (17, 25)) ('GPR101', 'Gene', '83550', (52, 58)) ('GPR101', 'Gene', (52, 58)) 59926 33805450 Diagnosis: Genetic testing should be performed using array comparative genomic hybridisation (aCGH) array, but in negative cases with a suggestive phenotype, alternative methods such as copy number variation digital droplet polymerase chain reaction (PCR) for GPR101 to detect smaller duplications or high-density aCGH should be considered. ('GPR101', 'Gene', (260, 266)) ('GH', 'Gene', '2688', (96, 98)) ('duplications', 'Var', (285, 297)) ('GH', 'Gene', '2688', (316, 318)) ('copy', 'Var', (186, 190)) ('GPR101', 'Gene', '83550', (260, 266)) 59927 33805450 On suspicion of a mosaic XLAG mutation, analysis of affected tissue should be performed. ('mosaic', 'Var', (18, 24)) ('mutation', 'Var', (30, 38)) ('XLAG', 'Chemical', '-', (25, 29)) ('XLAG', 'Gene', (25, 29)) 59935 33805450 Conversely, MEN1 mutations have been described in 1.2% of sporadic acromegaly patients younger than 30 years The prevalence of patients with acromegaly and MEN1 phenotype (defined as occurrence of at least one other MEN1-associated tumour) has been noted in 6.6% of 414 patients with acromegaly, but the prevalence of MEN1 mutations in this group is much lower. ('patients', 'Species', '9606', (78, 86)) ('acromegaly', 'Disease', (67, 77)) ('acromegaly', 'Phenotype', 'HP:0000845', (67, 77)) ('MEN1', 'Gene', (318, 322)) ('mutations', 'Var', (17, 26)) ('sporadic acromegaly', 'Disease', (58, 77)) ('MEN1', 'Gene', '4221', (156, 160)) ('tumour', 'Phenotype', 'HP:0002664', (232, 238)) ('tumour', 'Disease', 'MESH:D009369', (232, 238)) ('MEN1', 'Gene', (216, 220)) ('tumour', 'Disease', (232, 238)) ('MEN1', 'Gene', (156, 160)) ('acromegaly', 'Disease', 'MESH:D000172', (141, 151)) ('MEN1', 'Gene', '4221', (12, 16)) ('MEN1', 'Gene', '4221', (216, 220)) ('acromegaly', 'Disease', 'MESH:D000172', (284, 294)) ('patients', 'Species', '9606', (270, 278)) ('acromegaly', 'Phenotype', 'HP:0000845', (141, 151)) ('acromegaly', 'Disease', (141, 151)) ('patients', 'Species', '9606', (127, 135)) ('MEN1', 'Gene', (12, 16)) ('acromegaly', 'Disease', (284, 294)) ('MEN1', 'Gene', '4221', (318, 322)) ('acromegaly', 'Phenotype', 'HP:0000845', (284, 294)) ('acromegaly', 'Disease', 'MESH:D000172', (67, 77)) ('sporadic acromegaly', 'Disease', 'MESH:D000172', (58, 77)) 59945 33805450 Ectopic GHRH and GH production due to lung neuroendocrine tumour related to MEN1 mutation has been found only in one patient. ('GHRH', 'Gene', '2691', (8, 12)) ('GH', 'Gene', '2688', (8, 10)) ('GHRH', 'Gene', (8, 12)) ('lung neuroendocrine tumour', 'Disease', (38, 64)) ('tumour', 'Phenotype', 'HP:0002664', (58, 64)) ('mutation', 'Var', (81, 89)) ('MEN1', 'Gene', (76, 80)) ('GH', 'Gene', '2688', (17, 19)) ('MEN1', 'Gene', '4221', (76, 80)) ('Ectopic', 'MPA', (0, 7)) ('lung neuroendocrine tumour', 'Disease', 'MESH:D008175', (38, 64)) ('patient', 'Species', '9606', (117, 124)) ('neuroendocrine tumour', 'Phenotype', 'HP:0100634', (43, 64)) 59946 33805450 Gigantism associated with MEN1 mutation occurs in approximately 1% of cases, this could be due to a pituitary tumour or, rarely, due to a GHRH-secreting pancreas tumour. ('due', 'Reg', (91, 94)) ('pancreas tumour', 'Disease', (153, 168)) ('pancreas tumour', 'Disease', 'MESH:D010190', (153, 168)) ('mutation', 'Var', (31, 39)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (100, 116)) ('tumour', 'Phenotype', 'HP:0002664', (110, 116)) ('pituitary tumour', 'Disease', (100, 116)) ('GHRH', 'Gene', '2691', (138, 142)) ('Gigantism', 'Disease', (0, 9)) ('tumour', 'Phenotype', 'HP:0002664', (162, 168)) ('pancreas tumour', 'Phenotype', 'HP:0002894', (153, 168)) ('pituitary tumour', 'Disease', 'MESH:D010911', (100, 116)) ('MEN1', 'Gene', (26, 30)) ('GHRH', 'Gene', (138, 142)) ('MEN1', 'Gene', '4221', (26, 30)) 59952 33805450 MEN1 mutated PAs manifest predominantly in the 4th decade of life, but various ages of onset have been noted (from 5 years to 90 years). ('MEN1', 'Gene', '4221', (0, 4)) ('PAs', 'Disease', (13, 16)) ('PAs', 'Chemical', 'MESH:D011478', (13, 16)) ('mutated', 'Var', (5, 12)) ('PA', 'Phenotype', 'HP:0002893', (13, 15)) ('MEN1', 'Gene', (0, 4)) 59956 33805450 Genetics: Inactivating mutation of the MEN1 gene, located on chromosome 11q13, was first reported in 1997, but the phenotype of MEN1 syndrome was first noted in a patient with acromegaly and enlarged parathyroid glands by Erdheim in 1903. ('enlarged parathyroid glands', 'Phenotype', 'HP:0008208', (191, 218)) ('acromegaly', 'Phenotype', 'HP:0000845', (176, 186)) ('MEN1', 'Gene', '4221', (128, 132)) ('acromegaly', 'Disease', (176, 186)) ('MEN1', 'Gene', (128, 132)) ('acromegaly', 'Disease', 'MESH:D000172', (176, 186)) ('Inactivating mutation', 'Var', (10, 31)) ('patient', 'Species', '9606', (163, 170)) ('MEN1', 'Gene', (39, 43)) ('MEN1', 'Gene', '4221', (39, 43)) 59958 33805450 More recently, MEN1 mosaic mutations have also been reported. ('MEN1', 'Gene', '4221', (15, 19)) ('MEN1', 'Gene', (15, 19)) ('mosaic mutations', 'Var', (20, 36)) 59959 33805450 Most pathogenic germline MEN1 variants are frameshift mutations (42%), followed by nonsense mutations (14%), missense mutations, splice site mutations and large deletions. ('variants', 'Var', (30, 38)) ('MEN1', 'Gene', '4221', (25, 29)) ('missense mutations', 'Var', (109, 127)) ('pathogenic', 'Reg', (5, 15)) ('frameshift mutations', 'Var', (43, 63)) ('MEN1', 'Gene', (25, 29)) 59960 33805450 Inactivating mutations of MEN1 lead to premature menin truncation and its impaired activity. ('activity', 'MPA', (83, 91)) ('menin', 'Gene', (49, 54)) ('impaired', 'NegReg', (74, 82)) ('Inactivating mutations', 'Var', (0, 22)) ('lead to', 'Reg', (31, 38)) ('menin', 'Gene', '4221', (49, 54)) ('MEN1', 'Gene', (26, 30)) ('premature', 'MPA', (39, 48)) ('MEN1', 'Gene', '4221', (26, 30)) 59964 33805450 Diagnosis: Diagnosis of MEN1 could be (i) clinically established if a patient develops two or more MEN1 associated tumours (pituitary and parathyroid adenoma, pancreatic neuroendocrine tumour); (ii) by the presence of one characteristic MEN1 tumour and one first-degree relative with confirmed MEN1 mutation or (iii) due to family cascade genetic screening in asymptomatic carriers. ('tumours', 'Disease', (115, 122)) ('MEN1', 'Gene', '4221', (24, 28)) ('tumour', 'Phenotype', 'HP:0002664', (115, 121)) ('MEN1', 'Gene', (294, 298)) ('tumour', 'Phenotype', 'HP:0002664', (242, 248)) ('tumour', 'Disease', 'MESH:D009369', (115, 121)) ('tumours', 'Phenotype', 'HP:0002664', (115, 122)) ('tumour', 'Disease', (115, 121)) ('pancreatic neuroendocrine tumour', 'Phenotype', 'HP:0030405', (159, 191)) ('tumours', 'Disease', 'MESH:D009369', (115, 122)) ('MEN1', 'Gene', (24, 28)) ('tumour', 'Disease', 'MESH:D009369', (242, 248)) ('tumour', 'Disease', (242, 248)) ('MEN1', 'Gene', '4221', (237, 241)) ('patient', 'Species', '9606', (70, 77)) ('parathyroid adenoma', 'Phenotype', 'HP:0002897', (138, 157)) ('neuroendocrine tumour', 'Phenotype', 'HP:0100634', (170, 191)) ('parathyroid adenoma', 'Disease', (138, 157)) ('pancreatic neuroendocrine tumour', 'Disease', 'MESH:D010190', (159, 191)) ('MEN1', 'Gene', (237, 241)) ('tumour', 'Phenotype', 'HP:0002664', (185, 191)) ('tumour', 'Disease', 'MESH:D009369', (185, 191)) ('parathyroid adenoma', 'Disease', 'MESH:D010282', (138, 157)) ('tumour', 'Disease', (185, 191)) ('MEN1', 'Gene', '4221', (99, 103)) ('pancreatic neuroendocrine tumour', 'Disease', (159, 191)) ('mutation', 'Var', (299, 307)) ('MEN1', 'Gene', '4221', (294, 298)) ('MEN1', 'Gene', (99, 103)) 59966 33805450 MEN1 mutation carriers should undergo periodic clinical screening. ('MEN1', 'Gene', '4221', (0, 4)) ('mutation', 'Var', (5, 13)) ('MEN1', 'Gene', (0, 4)) 59970 33805450 It has been suggested that MEN1 gene replacement, by the use of adenoviral vectors, would decrease pituitary tumour proliferation. ('MEN1', 'Gene', '4221', (27, 31)) ('pituitary tumour', 'Disease', (99, 115)) ('MEN1', 'Gene', (27, 31)) ('gene replacement', 'Var', (32, 48)) ('pituitary tumour', 'Disease', 'MESH:D010911', (99, 115)) ('decrease', 'NegReg', (90, 98)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (99, 115)) ('tumour', 'Phenotype', 'HP:0002664', (109, 115)) 59971 33805450 Another option is the potential use of a monoclonal antibody to the vascular endothelial growth factor (VEGF-A), which inhibits angiogenic pathways. ('angiogenic pathways', 'Pathway', (128, 147)) ('vascular endothelial growth factor', 'Gene', (68, 102)) ('vascular endothelial growth factor', 'Gene', '7422', (68, 102)) ('VEGF-A', 'Gene', (104, 110)) ('monoclonal antibody', 'Var', (41, 60)) ('inhibits', 'NegReg', (119, 127)) 59972 33805450 In a study of MEN1 mouse models with prolactinoma, the implementation of VEGF-A resulted in lowering of the prolactin concentration in treated animals but not controls. ('MEN1', 'Gene', '4221', (14, 18)) ('prolactinoma', 'Disease', (37, 49)) ('MEN1', 'Gene', (14, 18)) ('lowering', 'NegReg', (92, 100)) ('prolactin concentration', 'MPA', (108, 131)) ('lowering of the prolactin concentration', 'Phenotype', 'HP:0008202', (92, 131)) ('prolactinoma', 'Disease', 'MESH:D015175', (37, 49)) ('prolactinoma', 'Phenotype', 'HP:0040278', (37, 49)) ('implementation', 'Var', (55, 69)) ('mouse', 'Species', '10090', (19, 24)) ('VEGF-A', 'Gene', (73, 79)) 59974 33805450 MEN4: About 10-20% of patients presenting a MEN1-like phenotype have no identifiable MEN1 mutations. ('mutations', 'Var', (90, 99)) ('patients', 'Species', '9606', (22, 30)) ('MEN1', 'Gene', '4221', (44, 48)) ('MEN1', 'Gene', (44, 48)) ('MEN1', 'Gene', (85, 89)) ('MEN1', 'Gene', '4221', (85, 89)) 59975 33805450 Further genetic investigations have revealed a small number of patients harbouring loss of function mutation in the CDKN1B gene (up to 3% of cases with negative MEN1 results). ('MEN1', 'Gene', '4221', (161, 165)) ('CDKN1B', 'Gene', (116, 122)) ('CDKN1B', 'Gene', '1027', (116, 122)) ('loss of function', 'NegReg', (83, 99)) ('mutation', 'Var', (100, 108)) ('patients', 'Species', '9606', (63, 71)) ('MEN1', 'Gene', (161, 165)) 59976 33805450 The syndrome of association between MEN1 phenotype and CDKN1B mutations has been termed MEN4. ('CDKN1B', 'Gene', '1027', (55, 61)) ('CDKN1B', 'Gene', (55, 61)) ('MEN1', 'Gene', (36, 40)) ('MEN1', 'Gene', '4221', (36, 40)) ('mutations', 'Var', (62, 71)) 59978 33805450 To date, less than 50 cases with CDKN1B mutations (the majority of patients presenting with hyperparathyroidism) have been noted, one-third of those conjoined with pituitary tumours. ('tumour', 'Phenotype', 'HP:0002664', (174, 180)) ('tumours', 'Phenotype', 'HP:0002664', (174, 181)) ('patients', 'Species', '9606', (67, 75)) ('CDKN1B', 'Gene', '1027', (33, 39)) ('hyperparathyroidism', 'Disease', 'MESH:D006961', (92, 111)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (92, 111)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (164, 180)) ('hyperparathyroidism', 'Disease', (92, 111)) ('mutations', 'Var', (40, 49)) ('CDKN1B', 'Gene', (33, 39)) ('pituitary tumours', 'Disease', (164, 181)) ('pituitary tumours', 'Disease', 'MESH:D010911', (164, 181)) 59980 33805450 In a large cohort of 190 patients with Cushing's disease, 2.6% had CDKN1B variants. ("Cushing's disease", 'Disease', (39, 56)) ('CDKN1B', 'Gene', '1027', (67, 73)) ('CDKN1B', 'Gene', (67, 73)) ('patients', 'Species', '9606', (25, 33)) ('variants', 'Var', (74, 82)) ("Cushing's disease", 'Disease', 'MESH:D003480', (39, 56)) 59992 33805450 Genetics: MAS is caused by mosaicism for mutations in GNAS gene, located at chromosome 20q13.3. ('mutations', 'Var', (41, 50)) ('MAS', 'Disease', (10, 13)) ('GNAS', 'Gene', (54, 58)) ('GNAS', 'Gene', '2778', (54, 58)) ('caused by', 'Reg', (17, 26)) 59994 33805450 A gain-of-function mutation in the GNAS gene, affecting codons Arg201 and Gln227, results in a constitutively activated cAMP pathway and leads to persistent GH hypersecretion and cell proliferation.. ('Gln227', 'Chemical', '-', (74, 80)) ('gain-of-function', 'PosReg', (2, 18)) ('cAMP', 'Chemical', '-', (120, 124)) ('GNAS', 'Gene', '2778', (35, 39)) ('GH', 'Gene', '2688', (157, 159)) ('Arg201', 'Chemical', '-', (63, 69)) ('cAMP pathway', 'Pathway', (120, 132)) ('GNAS', 'Gene', (35, 39)) ('Gln227', 'Var', (74, 80)) ('cell proliferation..', 'CPA', (179, 199)) ('codons', 'Var', (56, 62)) 60014 33805450 The analysis of archive tissue revealed a PRKAR1A mutation. ('PRKAR1A', 'Gene', '5573', (42, 49)) ('PRKAR1A', 'Gene', (42, 49)) ('mutation', 'Var', (50, 58)) 60016 33805450 Most are caused by a germline-inactivating mutation mainly in the PRKAR1A gene (CNC1), located on the 17q22-24 locus, but recently other protein kinase A regulatory subunit 1alpha (PKA) mutations, including PRKACB, have also been described. ('caused by', 'Reg', (9, 18)) ('mutations', 'Var', (186, 195)) ('CNC1', 'Gene', (80, 84)) ('PKA', 'Gene', (181, 184)) ('PRKAR1A', 'Gene', (66, 73)) ('PRKACB', 'Gene', '5567', (207, 213)) ('PRKAR1A', 'Gene', '5573', (66, 73)) ('CNC1', 'Gene', '5573', (80, 84)) ('PRKACB', 'Gene', (207, 213)) 60018 33805450 Patients with large deletions of PRKAR1A develop the diseases earlier with a more severe phenotype, including metastatic psammomatous melanotic schwannoma. ('PRKAR1A', 'Gene', (33, 40)) ('develop', 'PosReg', (41, 48)) ('large deletions', 'Var', (14, 29)) ('psammomatous melanotic schwannoma', 'Disease', (121, 154)) ('PRKAR1A', 'Gene', '5573', (33, 40)) ('psammomatous melanotic schwannoma', 'Disease', 'MESH:D008577', (121, 154)) ('Patients', 'Species', '9606', (0, 8)) ('schwannoma', 'Phenotype', 'HP:0100008', (144, 154)) 60020 33805450 Inactivating mutations of PRKAR1A lead to uncontrolled activation of cAMP-dependent kinase activity in affected tissues. ('PRKAR1A', 'Gene', (26, 33)) ('uncontrolled', 'MPA', (42, 54)) ('Inactivating mutations', 'Var', (0, 22)) ('PRKAR1A', 'Gene', '5573', (26, 33)) ('cAMP', 'Chemical', '-', (69, 73)) ('cAMP-dependent', 'Enzyme', (69, 83)) ('activation', 'PosReg', (55, 65)) 60024 33805450 Another way to confirm CNC diagnosis is the occurrence of one major criterion and an affected first-degree relative or a known inactivating PRKAR1A mutation. ('CNC', 'Disease', (23, 26)) ('PRKAR1A', 'Gene', (140, 147)) ('inactivating', 'Var', (127, 139)) ('PRKAR1A', 'Gene', '5573', (140, 147)) ('mutation', 'Var', (148, 156)) 60033 33805450 Genetic predisposition of this rare condition has been relatively recently found in 2009 in a familial case of prolactinoma with paraganglioma and SDHB mutation. ('paraganglioma', 'Phenotype', 'HP:0002668', (129, 142)) ('prolactinoma', 'Disease', 'MESH:D015175', (111, 123)) ('prolactinoma', 'Phenotype', 'HP:0040278', (111, 123)) ('paraganglioma', 'Disease', (129, 142)) ('SDHB', 'Gene', '6390', (147, 151)) ('paraganglioma', 'Disease', 'MESH:D010235', (129, 142)) ('SDHB', 'Gene', (147, 151)) ('prolactinoma', 'Disease', (111, 123)) ('mutation', 'Var', (152, 160)) ('glioma', 'Phenotype', 'HP:0009733', (136, 142)) 60034 33805450 Subsequently, in 2012, a patient with aggressive GH-secreting PitNETs with bilateral phaeochromocytomas and a pathogenic variant of SDHD mutation was described. ('SDHD', 'Gene', (132, 136)) ('variant', 'Var', (121, 128)) ('mutation', 'Var', (137, 145)) ('patient', 'Species', '9606', (25, 32)) ('bilateral phaeochromocytomas', 'Disease', (75, 103)) ('bilateral phaeochromocytomas', 'Disease', 'MESH:D006312', (75, 103)) ('GH', 'Gene', '2688', (49, 51)) ('SDHD', 'Gene', '6392', (132, 136)) 60036 33805450 Acromegaly with SDHx mutation: The most common genetic cause of 3Pa is a germline loss of function mutation of the succinate dehydrogenase (SDH)x gene. ('SDH', 'Gene', '6390', (140, 143)) ('loss of function', 'NegReg', (82, 98)) ('SDH', 'Gene', (140, 143)) ('mutation', 'Var', (99, 107)) ('SDH', 'Gene', '6390', (16, 19)) ('Acromegaly', 'Phenotype', 'HP:0000845', (0, 10)) ('Acromegaly', 'Disease', 'MESH:D000172', (0, 10)) ('3Pa', 'Disease', (64, 67)) ('SDH', 'Gene', (16, 19)) ('Acromegaly', 'Disease', (0, 10)) 60037 33805450 GH-secreting PAs associated with SDHx mutations tend to be aggressive macroadenomas. ('SDH', 'Gene', (33, 36)) ('PA', 'Phenotype', 'HP:0002893', (13, 15)) ('SDH', 'Gene', '6390', (33, 36)) ('PAs', 'Chemical', 'MESH:D011478', (13, 16)) ('GH', 'Gene', '2688', (0, 2)) ('aggressive macroadenomas', 'Disease', (59, 83)) ('mutations', 'Var', (38, 47)) ('aggressive macroadenomas', 'Disease', 'MESH:D001523', (59, 83)) 60038 33805450 To date, 4 GH-PitNETs with an SDHx mutation have been described (SDHD and SDHB mutations). ('SDH', 'Gene', (74, 77)) ('SDH', 'Gene', '6390', (65, 68)) ('SDH', 'Gene', (30, 33)) ('SDHB', 'Gene', '6390', (74, 78)) ('SDHB', 'Gene', (74, 78)) ('SDH', 'Gene', (65, 68)) ('SDH', 'Gene', '6390', (74, 77)) ('mutation', 'Var', (35, 43)) ('GH', 'Gene', '2688', (11, 13)) ('SDH', 'Gene', '6390', (30, 33)) ('SDHD', 'Gene', '6392', (65, 69)) ('SDHD', 'Gene', (65, 69)) 60039 33805450 Gigantism related to SDHx mutation has not been reported yet. ('SDH', 'Gene', '6390', (21, 24)) ('Gigantism', 'Disease', (0, 9)) ('SDH', 'Gene', (21, 24)) ('mutation', 'Var', (26, 34)) 60042 33805450 A unique histopathological feature of pituitary adenoma with SDHx mutations is intracytoplasmic vacuoles, which can correspond to the presence of autophagic bodies. ('mutations', 'Var', (66, 75)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (38, 55)) ('SDH', 'Gene', (61, 64)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (38, 55)) ('SDH', 'Gene', '6390', (61, 64)) ('pituitary adenoma', 'Disease', (38, 55)) 60043 33805450 More recently, SDHx mutations have been observed in patients with an isolated pituitary tumour and without personal or familial history of PPGL, but none of them had somatotropinoma (3 prolactinomas out of 263 patients with PAs). ('somatotropinoma', 'Disease', 'MESH:D049912', (166, 181)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (78, 94)) ('PA', 'Phenotype', 'HP:0002893', (224, 226)) ('PPGL', 'Chemical', '-', (139, 143)) ('pituitary tumour', 'Disease', (78, 94)) ('prolactinomas', 'Disease', 'MESH:D015175', (185, 198)) ('somatotropinoma', 'Disease', (166, 181)) ('observed', 'Reg', (40, 48)) ('pituitary tumour', 'Disease', 'MESH:D010911', (78, 94)) ('SDH', 'Gene', '6390', (15, 18)) ('prolactinomas', 'Disease', (185, 198)) ('tumour', 'Phenotype', 'HP:0002664', (88, 94)) ('patients', 'Species', '9606', (210, 218)) ('PAs', 'Chemical', 'MESH:D011478', (224, 227)) ('prolactinoma', 'Phenotype', 'HP:0040278', (185, 197)) ('mutations', 'Var', (20, 29)) ('patients', 'Species', '9606', (52, 60)) ('SDH', 'Gene', (15, 18)) 60046 33805450 Germline mutation of SDH results in the accumulation of oncometabolites that inhibit degradation of hypoxia transcription factor (HIFalpha). ('inhibit', 'NegReg', (77, 84)) ('SDH', 'Gene', (21, 24)) ('SDH', 'Gene', '6390', (21, 24)) ('Germline mutation', 'Var', (0, 17)) ('oncometabolites', 'MPA', (56, 71)) ('hypoxia', 'Disease', 'MESH:D000860', (100, 107)) ('hypoxia', 'Disease', (100, 107)) ('accumulation', 'PosReg', (40, 52)) 60047 33805450 The penetrance of pituitary tumours in SDHx mutation-positive patients is very low (1% of cases). ('SDH', 'Gene', (39, 42)) ('tumour', 'Phenotype', 'HP:0002664', (28, 34)) ('mutation-positive', 'Var', (44, 61)) ('tumours', 'Phenotype', 'HP:0002664', (28, 35)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (18, 34)) ('pituitary tumours', 'Disease', 'MESH:D010911', (18, 35)) ('low', 'NegReg', (79, 82)) ('pituitary tumours', 'Disease', (18, 35)) ('SDH', 'Gene', '6390', (39, 42)) ('patients', 'Species', '9606', (62, 70)) 60052 33805450 Patients with germline MAX mutation may also develop other systemic manifestations like renal oncocytoma or lung cancer. ('lung cancer', 'Disease', 'MESH:D008175', (108, 119)) ('renal oncocytoma', 'Disease', 'MESH:C537750', (88, 104)) ('renal oncocytoma', 'Disease', (88, 104)) ('develop', 'Reg', (45, 52)) ('Patients', 'Species', '9606', (0, 8)) ('lung cancer', 'Disease', (108, 119)) ('germline', 'Var', (14, 22)) ('renal oncocytoma', 'Phenotype', 'HP:0011798', (88, 104)) ('lung cancer', 'Phenotype', 'HP:0100526', (108, 119)) ('cancer', 'Phenotype', 'HP:0002664', (113, 119)) 60053 33805450 Germline MAX mutations are associated with tumourigenesis involving neuroendocrine cells, renal tumours or small cell lung cancer. ('small cell lung cancer', 'Disease', 'MESH:D055752', (107, 129)) ('cancer', 'Phenotype', 'HP:0002664', (123, 129)) ('renal tumours', 'Disease', (90, 103)) ('tumour', 'Disease', (43, 49)) ('associated', 'Reg', (27, 37)) ('small cell lung cancer', 'Disease', (107, 129)) ('tumour', 'Phenotype', 'HP:0002664', (96, 102)) ('tumours', 'Phenotype', 'HP:0002664', (96, 103)) ('MAX', 'Gene', (9, 12)) ('tumour', 'Disease', 'MESH:D009369', (96, 102)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (107, 129)) ('lung cancer', 'Phenotype', 'HP:0100526', (118, 129)) ('mutations', 'Var', (13, 22)) ('tumour', 'Phenotype', 'HP:0002664', (43, 49)) ('renal tumours', 'Disease', 'MESH:D007680', (90, 103)) ('tumour', 'Disease', (96, 102)) ('tumour', 'Disease', 'MESH:D009369', (43, 49)) 60054 33805450 Point mutations and small exonic and intronic deletions of MAX have been linked to PAs. ('PA', 'Phenotype', 'HP:0002893', (83, 85)) ('MAX', 'Gene', (59, 62)) ('linked', 'Reg', (73, 79)) ('PAs', 'Disease', (83, 86)) ('small exonic', 'Var', (20, 32)) ('Point mutations', 'Var', (0, 15)) ('PAs', 'Chemical', 'MESH:D011478', (83, 86)) 60055 33805450 The association of pituitary tumours and PPGL may also appear due to MEN1 mutation (to date, one mixed GH/PRL macroadenoma out of four PitNETs). ('pituitary tumours', 'Disease', 'MESH:D010911', (19, 36)) ('mutation', 'Var', (74, 82)) ('adenoma', 'Disease', (115, 122)) ('MEN1', 'Gene', (69, 73)) ('PRL', 'Gene', (106, 109)) ('pituitary tumours', 'Disease', (19, 36)) ('MEN1', 'Gene', '4221', (69, 73)) ('association', 'Interaction', (4, 15)) ('PPGL', 'Disease', (41, 45)) ('PRL', 'Gene', '5617', (106, 109)) ('tumour', 'Phenotype', 'HP:0002664', (29, 35)) ('GH', 'Gene', '2688', (103, 105)) ('PPGL', 'Chemical', '-', (41, 45)) ('adenoma', 'Disease', 'MESH:D000236', (115, 122)) ('tumours', 'Phenotype', 'HP:0002664', (29, 36)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (19, 35)) 60060 33805450 The specific mechanism of NF1 mutations leading to GH excess has not been identified yet. ('NF1', 'Gene', (26, 29)) ('leading', 'Reg', (40, 47)) ('NF1', 'Gene', '4763', (26, 29)) ('mutations', 'Var', (30, 39)) ('GH', 'Gene', '2688', (51, 53)) 60066 33805450 Genetic testing confirmed NF1 mutation and excluded MEN1 mutation. ('confirmed', 'Reg', (16, 25)) ('MEN1', 'Gene', '4221', (52, 56)) ('MEN1', 'Gene', (52, 56)) ('mutation', 'Var', (30, 38)) ('NF1', 'Gene', (26, 29)) ('NF1', 'Gene', '4763', (26, 29)) 60067 33805450 The PA tissue showed no loss of the wild type allele of the NF1 gene, but harboured a somatic GNAS p.R201C mutation, not supporting NF1 being causative in pituitary adenoma development. ('pituitary adenoma', 'Disease', (155, 172)) ('p.R201C', 'Var', (99, 106)) ('NF1', 'Gene', '4763', (132, 135)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (155, 172)) ('GNAS', 'Gene', '2778', (94, 98)) ('NF1', 'Gene', '4763', (60, 63)) ('p.R201C', 'Mutation', 'rs11554273', (99, 106)) ('NF1', 'Gene', (60, 63)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (155, 172)) ('GNAS', 'Gene', (94, 98)) ('PA', 'Phenotype', 'HP:0002893', (4, 6)) ('NF1', 'Gene', (132, 135)) 60068 33805450 In the other published case with NF1 mutation and somatotroph PA, somatic changes were not assessed. ('NF1', 'Gene', (33, 36)) ('PA', 'Phenotype', 'HP:0002893', (62, 64)) ('NF1', 'Gene', '4763', (33, 36)) ('mutation', 'Var', (37, 45)) 60070 33805450 This autosomal-dominant syndrome is caused by an inactivating mutation of the NF1 gene, located on chromosome 17q11.2. ('autosomal-dominant syndrome', 'Disease', (5, 32)) ('inactivating mutation', 'Var', (49, 70)) ('caused by', 'Reg', (36, 45)) ('NF1', 'Gene', (78, 81)) ('autosomal-dominant syndrome', 'Disease', 'MESH:D030342', (5, 32)) ('NF1', 'Gene', '4763', (78, 81)) 60074 33805450 Recent data revealed that IGSF1 deficiency results in somatotroph neurosecretory hyperfunction. ('IGSF1', 'Gene', (26, 31)) ('somatotroph neurosecretory hyperfunction', 'Disease', (54, 94)) ('results in', 'Reg', (43, 53)) ('somatotroph neurosecretory hyperfunction', 'Disease', 'MESH:D049912', (54, 94)) ('IGSF1', 'Gene', '3547', (26, 31)) ('deficiency', 'Var', (32, 42)) 60076 33805450 Its loss-of-function mutations cause central hypothyroidism, hypoprolactinaemia and macroorchidism. ('hypothyroidism', 'Phenotype', 'HP:0000821', (45, 59)) ('hypothyroidism', 'Disease', (45, 59)) ('loss-of-function', 'NegReg', (4, 20)) ('macroorchidism', 'Phenotype', 'HP:0000053', (84, 98)) ('hypoprolactinaemia and macroorchidism', 'Disease', 'MESH:D005600', (61, 98)) ('hypothyroidism', 'Disease', 'MESH:D007037', (45, 59)) ('central hypothyroidism', 'Phenotype', 'HP:0011787', (37, 59)) ('mutations', 'Var', (21, 30)) 60077 33805450 Additionally, 52.4% of adult patients with germline IGSF1 mutation present acromegalic facial features as well as organ changes due to GH excess. ('GH', 'Gene', '2688', (135, 137)) ('patients', 'Species', '9606', (29, 37)) ('IGSF1', 'Gene', '3547', (52, 57)) ('IGSF1', 'Gene', (52, 57)) ('acromegalic', 'Disease', 'MESH:D000172', (75, 86)) ('mutation', 'Var', (58, 66)) ('organ changes', 'CPA', (114, 127)) ('acromegalic', 'Disease', (75, 86)) 60080 33805450 A germline IGSF1 variant has been identified in three family members with XLAG-related gigantism, but the reported variant has up to 0.01 minor allele frequency and has been reported as benign by ClinVar, and is therefore unlikely to be related to the phenotype. ('IGSF1', 'Gene', '3547', (11, 16)) ('variant', 'Var', (115, 122)) ('IGSF1', 'Gene', (11, 16)) ('XLAG-related gigantism', 'Disease', (74, 96)) ('XLAG', 'Chemical', '-', (74, 78)) ('variant', 'Var', (17, 24)) 60082 33805450 Tuberous Sclerosis Complex is an autosomal-dominant genetic disorder caused by loss-of-function mutation in either the TSC1 gene on chromosome 9q34.13 or the TSC2 gene on chromosome 16p13.3. ('autosomal-dominant genetic disorder', 'Disease', (33, 68)) ('TSC2', 'Gene', (158, 162)) ('TSC1', 'Gene', '7248', (119, 123)) ('Tuberous Sclerosis', 'Disease', (0, 18)) ('loss-of-function', 'NegReg', (79, 95)) ('TSC1', 'Gene', (119, 123)) ('mutation', 'Var', (96, 104)) ('Tuberous Sclerosis', 'Disease', 'MESH:D014402', (0, 18)) ('autosomal-dominant genetic disorder', 'Disease', 'MESH:D030342', (33, 68)) ('TSC2', 'Gene', '7249', (158, 162)) 60084 33805450 To date, four patients with the TSC mutation and pituitary tumour have been described, including only one somatotropinoma. ('tumour', 'Phenotype', 'HP:0002664', (59, 65)) ('somatotropinoma', 'Disease', 'MESH:D049912', (106, 121)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (49, 65)) ('TSC', 'Gene', '7248;7249', (32, 35)) ('pituitary tumour', 'Disease', (49, 65)) ('pituitary tumour', 'Disease', 'MESH:D010911', (49, 65)) ('somatotropinoma', 'Disease', (106, 121)) ('patients', 'Species', '9606', (14, 22)) ('TSC', 'Gene', (32, 35)) ('mutation', 'Var', (36, 44)) 60091 33805450 However, in a study of genome-wide sequencing, GNAS mutation has been found in 5 out of 8 plurihormonal PAs secreting GH and prolactin and in 9 out of 23 pure GH somatotropinomas. ('GH somatotropinomas', 'Phenotype', 'HP:0011760', (159, 178)) ('GH somatotropinomas', 'Disease', (159, 178)) ('PA', 'Phenotype', 'HP:0002893', (104, 106)) ('GH somatotropinomas', 'Disease', 'MESH:D049912', (159, 178)) ('GNAS', 'Gene', (47, 51)) ('plurihormonal PAs secreting GH', 'Disease', 'MESH:D049912', (90, 120)) ('plurihormonal PAs secreting GH', 'Disease', (90, 120)) ('mutation', 'Var', (52, 60)) ('GNAS', 'Gene', '2778', (47, 51)) ('found', 'Reg', (70, 75)) 60092 33805450 Alterations of DNA methylation have also been linked with GNAS mutation. ('GNAS', 'Gene', '2778', (58, 62)) ('Alterations', 'Var', (0, 11)) ('DNA', 'Protein', (15, 18)) ('GNAS', 'Gene', (58, 62)) ('linked', 'Reg', (46, 52)) 60093 33805450 In a recent study, PIT1 lineage tumours showed global hypomethylation, chromosome alterations and transposable element overexpression. ('tumours', 'Disease', 'MESH:D009369', (32, 39)) ('tumours', 'Disease', (32, 39)) ('chromosome alterations', 'CPA', (71, 93)) ('global', 'MPA', (47, 53)) ('transposable element', 'CPA', (98, 118)) ('PIT1', 'Gene', (19, 23)) ('overexpression', 'PosReg', (119, 133)) ('PIT1', 'Gene', '5449', (19, 23)) ('tumours', 'Phenotype', 'HP:0002664', (32, 39)) ('hypomethylation', 'Var', (54, 69)) ('tumour', 'Phenotype', 'HP:0002664', (32, 38)) 60094 33805450 However, in GNAS mutated tumours, DNA hypomethylation and limited chromosomal alterations have been noted. ('GNAS', 'Gene', (12, 16)) ('tumour', 'Phenotype', 'HP:0002664', (25, 31)) ('tumours', 'Phenotype', 'HP:0002664', (25, 32)) ('tumours', 'Disease', 'MESH:D009369', (25, 32)) ('GNAS', 'Gene', '2778', (12, 16)) ('tumours', 'Disease', (25, 32)) ('mutated', 'Var', (17, 24)) 60096 33805450 To date, no association has been observed between GNAS mutation and granulation patterns in histopathology results. ('GNAS', 'Gene', '2778', (50, 54)) ('GNAS', 'Gene', (50, 54)) ('mutation', 'Var', (55, 63)) 60098 33805450 In GNAS positive patients, mutations are almost always located on the maternal allele due to paternal imprinting. ('mutations', 'Var', (27, 36)) ('patients', 'Species', '9606', (17, 25)) ('GNAS', 'Gene', '2778', (3, 7)) ('GNAS', 'Gene', (3, 7)) 60100 33805450 In around 30% of GH-secreting PAs with negative GNAS mutation, GIPR is expressed at a significantly higher level than in the normal pituitary gland. ('GNAS', 'Gene', '2778', (48, 52)) ('higher level', 'PosReg', (100, 112)) ('GIPR', 'Gene', '2696', (63, 67)) ('PAs', 'Chemical', 'MESH:D011478', (30, 33)) ('PA', 'Phenotype', 'HP:0002893', (30, 32)) ('GH', 'Gene', '2688', (17, 19)) ('GNAS', 'Gene', (48, 52)) ('negative', 'Var', (39, 47)) ('GIPR', 'Gene', (63, 67)) 60107 33805450 However, several somatic variants associated with the cAMP pathway, calcium signalling and ATP signalling have been observed (Table 2), which may suggest the important role of these pathways in the pathogenesis of GH-secreting PAs. ('associated', 'Reg', (34, 44)) ('variants', 'Var', (25, 33)) ('GH', 'Gene', '2688', (214, 216)) ('cAMP', 'Chemical', '-', (54, 58)) ('cAMP pathway', 'Pathway', (54, 66)) ('calcium', 'Chemical', 'MESH:D002118', (68, 75)) ('ATP', 'Chemical', 'MESH:D000255', (91, 94)) ('PAs', 'Chemical', 'MESH:D011478', (227, 230)) ('PA', 'Phenotype', 'HP:0002893', (227, 229)) 60108 33805450 In patients with DICER1 mutations and pituitary blastoma, immunohistochemistry for GH was positive in 10 out of 14 studied tumours. ('pituitary blastoma', 'Disease', 'MESH:D018202', (38, 56)) ('pituitary blastoma', 'Disease', (38, 56)) ('DICER1', 'Gene', '23405', (17, 23)) ('tumours', 'Phenotype', 'HP:0002664', (123, 130)) ('died', 'Disease', 'MESH:D003643', (118, 122)) ('tumours', 'Disease', 'MESH:D009369', (123, 130)) ('died', 'Disease', (118, 122)) ('patients', 'Species', '9606', (3, 11)) ('tumours', 'Disease', (123, 130)) ('mutations', 'Var', (24, 33)) ('GH', 'Gene', '2688', (83, 85)) ('DICER1', 'Gene', (17, 23)) ('tumour', 'Phenotype', 'HP:0002664', (123, 129)) 60112 33805450 Further studies found a relationship between epigenetic modifications and pituitary tumourigenesis. ('pituitary tumour', 'Disease', (74, 90)) ('pituitary tumour', 'Phenotype', 'HP:0002893', (74, 90)) ('pituitary tumour', 'Disease', 'MESH:D010911', (74, 90)) ('epigenetic modifications', 'Var', (45, 69)) ('tumour', 'Phenotype', 'HP:0002664', (84, 90)) 60116 33805450 If blood-derived GPR101 duplication testing is negative using a CGH array, analysis of affected tissue or alternative tissue DNA and gene-specific methods (ddPCR) should follow before ruling out this diagnosis. ('GH', 'Gene', '2688', (65, 67)) ('GPR101', 'Gene', '83550', (17, 23)) ('GPR101', 'Gene', (17, 23)) ('duplication', 'Var', (24, 35)) 60122 33805450 We should consider the disadvantages: (i) psychological burden of increasing anxiety, guilt and depression due to carrying a genetic alteration and transmitting it to offspring, (ii) identifying variants with uncertain significance leading to uncertainty and (iii) costs. ('guilt', 'Disease', (86, 91)) ('variants', 'Var', (195, 203)) ('anxiety', 'Disease', 'MESH:D001007', (77, 84)) ('depression', 'Disease', 'MESH:D000275', (96, 106)) ('depression', 'Phenotype', 'HP:0000716', (96, 106)) ('depression', 'Disease', (96, 106)) ('anxiety', 'Disease', (77, 84)) ('anxiety', 'Phenotype', 'HP:0000739', (77, 84)) ('genetic alteration', 'Var', (125, 143)) ('increasing', 'PosReg', (66, 76)) 60255 30352407 Germline SDHB and SDHD mutations in pheochromocytoma and paraganglioma patients Pheochromocytoma and paragangliomas (PCC/PGL) are neuroendocrine tumors that arise from chromaffin cells of the adrenal medulla and sympathetic/parasympathetic ganglia, respectively. ('PCC/PGL', 'Gene', '1421', (117, 124)) ('paraganglioma', 'Disease', 'MESH:D010235', (101, 114)) ('SDHB', 'Gene', (9, 13)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (36, 52)) ('Pheochromocytoma and paragangliomas', 'Disease', 'MESH:D010673', (80, 115)) ('SDHD', 'Gene', (18, 22)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (130, 151)) ('pheochromocytoma', 'Disease', (36, 52)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (36, 52)) ('mutations', 'Var', (23, 32)) ('paraganglioma', 'Phenotype', 'HP:0002668', (101, 114)) ('PCC/PGL', 'Gene', (117, 124)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (130, 150)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (130, 151)) ('paraganglioma', 'Disease', (57, 70)) ('chromaffin', 'Chemical', '-', (168, 178)) ('paraganglioma', 'Disease', 'MESH:D010235', (57, 70)) ('tumors', 'Phenotype', 'HP:0002664', (145, 151)) ('paragangliomas', 'Phenotype', 'HP:0002668', (101, 115)) ('SDHB', 'Gene', '6390', (9, 13)) ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('neuroendocrine tumors', 'Disease', (130, 151)) ('paraganglioma', 'Phenotype', 'HP:0002668', (57, 70)) ('paraganglioma', 'Disease', (101, 114)) ('SDHD', 'Gene', '6392', (18, 22)) 60259 30352407 Next-generation sequencing (NGS) performed on patient samples revealed specific germline mutations in the SDHB (succinate dehydrogenase complex iron-sulfur subunit B) and SDHD (succinate dehydrogenase complex subunit D) genes and these mutations were validated by Sanger sequencing. ('patient', 'Species', '9606', (46, 53)) ('succinate dehydrogenase complex subunit D', 'Gene', '6392', (177, 218)) ('succinate dehydrogenase complex subunit D', 'Gene', (177, 218)) ('iron-sulfur subunit B) and SDHD', 'Gene', '6392', (144, 175)) ('SDHB', 'Gene', '6390', (106, 110)) ('succinate dehydrogenase', 'Gene', '6390', (177, 200)) ('mutations', 'Var', (89, 98)) ('SDHB', 'Gene', (106, 110)) ('succinate dehydrogenase', 'Gene', (112, 135)) ('succinate dehydrogenase', 'Gene', '6390', (112, 135)) 60260 30352407 Of the 119 patients, two were identified with SDHB mutation and one with SDHD mutation. ('SDHB', 'Gene', '6390', (46, 50)) ('SDHB', 'Gene', (46, 50)) ('SDHD', 'Gene', (73, 77)) ('mutation', 'Var', (51, 59)) ('patients', 'Species', '9606', (11, 19)) ('SDHD', 'Gene', '6392', (73, 77)) 60261 30352407 The germline mutations identified in the SDH genes were c343C>T and c.541-542A>G in the SDHB gene and c.334-337delACTG in the SDHD gene. ('SDH', 'Gene', (88, 91)) ('SDH', 'Gene', '6390', (126, 129)) ('c.334-337delACTG', 'Mutation', 'c.334_337delACTG', (102, 118)) ('c343C>T', 'Mutation', 'rs751000085', (56, 63)) ('c343C>T', 'Var', (56, 63)) ('SDHB', 'Gene', '6390', (88, 92)) ('SDH', 'Gene', (126, 129)) ('SDHB', 'Gene', (88, 92)) ('SDH', 'Gene', (41, 44)) ('c.541-542A>G', 'Var', (68, 80)) ('c.541-542A>G', 'Mutation', 'c.541_542A>G', (68, 80)) ('SDHD', 'Gene', (126, 130)) ('SDHD', 'Gene', '6392', (126, 130)) ('SDH', 'Gene', '6390', (88, 91)) ('c.334-337delACTG', 'Var', (102, 118)) ('SDH', 'Gene', '6390', (41, 44)) 60262 30352407 IHC staining of tumors from the c.343C>T and c.541-2A>G carriers showed positive expression of SDHB. ('c.541-2A>G', 'Mutation', 'rs786201161', (45, 55)) ('tumors', 'Phenotype', 'HP:0002664', (16, 22)) ('c.343C>T', 'Mutation', 'rs751000085', (32, 40)) ('SDHB', 'Gene', '6390', (95, 99)) ('tumor', 'Phenotype', 'HP:0002664', (16, 21)) ('c.343C>T', 'Var', (32, 40)) ('tumors', 'Disease', 'MESH:D009369', (16, 22)) ('c.541-2A>G', 'Var', (45, 55)) ('positive', 'PosReg', (72, 80)) ('SDHB', 'Gene', (95, 99)) ('tumors', 'Disease', (16, 22)) ('expression', 'MPA', (81, 91)) 60263 30352407 Tumors from the c.334-337delACTG carrier showed no expression of SDHD and a weak diffused staining pattern for SDHB. ('SDHB', 'Gene', (111, 115)) ('c.334-337delACTG', 'Var', (16, 32)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('expression', 'MPA', (51, 61)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('c.334-337delACTG', 'Mutation', 'c.334_337delACTG', (16, 32)) ('SDHD', 'Gene', '6392', (65, 69)) ('SDHD', 'Gene', (65, 69)) ('SDHB', 'Gene', '6390', (111, 115)) 60265 30352407 Tailored personal management should be conducted once a patient is confirmed as an SDHB and/or SDHD mutation carrier or diagnosed with PCC/PGL. ('PCC/PGL', 'Gene', (135, 142)) ('SDHB', 'Gene', (83, 87)) ('PCC/PGL', 'Gene', '1421', (135, 142)) ('SDHD', 'Gene', '6392', (95, 99)) ('mutation', 'Var', (100, 108)) ('SDHD', 'Gene', (95, 99)) ('patient', 'Species', '9606', (56, 63)) ('SDHB', 'Gene', '6390', (83, 87)) 60276 30352407 Loss of SDHB by immunohistochemistry (IHC) in PCC/PGL is strongly correlated with SDH subunit gene mutation. ('PCC/PGL', 'Gene', (46, 53)) ('SDHB', 'Gene', '6390', (8, 12)) ('SDH', 'Gene', (82, 85)) ('SDH', 'Gene', '6390', (8, 11)) ('PCC/PGL', 'Gene', '1421', (46, 53)) ('mutation', 'Var', (99, 107)) ('Loss', 'NegReg', (0, 4)) ('SDHB', 'Gene', (8, 12)) ('SDH', 'Gene', (8, 11)) ('SDH', 'Gene', '6390', (82, 85)) 60279 30352407 The tricarboxylic acid (TCA) cycle-related subgroup contains germline mutations in succinate dehydrogenase subunits SDHA, SDHB, SDHC, SDHD as well as SDHAF2 (succinate dehydrogenase complex assembly factor 2), FH (fumarate hydratase), MDH2 (malate dehydrogenase 2) and GOT2 (glutamic-oxaloacetic transaminase 2). ('succinate dehydrogenase', 'Gene', '6390', (158, 181)) ('GOT2', 'Gene', (269, 273)) ('glutamic-oxaloacetic transaminase 2', 'Gene', '2806', (275, 310)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', '54949', (158, 207)) ('succinate dehydrogenase', 'Gene', (83, 106)) ('SDHC', 'Gene', '6391', (128, 132)) ('fumarate hydratase', 'Gene', '2271', (214, 232)) ('MDH2', 'Gene', (235, 239)) ('SDHD', 'Gene', '6392', (134, 138)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', (158, 207)) ('SDHAF2', 'Gene', (150, 156)) ('SDHAF2', 'Gene', '54949', (150, 156)) ('mutations', 'Var', (70, 79)) ('FH', 'Gene', '2271', (210, 212)) ('malate dehydrogenase 2', 'Gene', (241, 263)) ('SDHA', 'Gene', (150, 154)) ('glutamic-oxaloacetic transaminase 2', 'Gene', (275, 310)) ('SDHB', 'Gene', '6390', (122, 126)) ('TCA', 'Chemical', 'MESH:D014233', (24, 27)) ('succinate dehydrogenase', 'Gene', '6390', (83, 106)) ('SDHC', 'Gene', (128, 132)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (4, 22)) ('SDHD', 'Gene', (134, 138)) ('SDHA', 'Gene', '6389', (150, 154)) ('MDH2', 'Gene', '4191', (235, 239)) ('GOT2', 'Gene', '2806', (269, 273)) ('SDHA', 'Gene', (116, 120)) ('fumarate hydratase', 'Gene', (214, 232)) ('malate dehydrogenase 2', 'Gene', '4191', (241, 263)) ('SDHA', 'Gene', '6389', (116, 120)) ('SDHB', 'Gene', (122, 126)) 60281 30352407 Germline mutations in SDH gene are responsible for 6-9% of sporadic PCC/PGLs, 29% of pediatric cases, 38% of malignant tumors and more than 80% of familial aggregations of PGL and PCC. ('Germline mutations', 'Var', (0, 18)) ('tumors', 'Phenotype', 'HP:0002664', (119, 125)) ('malignant tumors', 'Disease', (109, 125)) ('PCC/PGL', 'Gene', (68, 75)) ('malignant tumors', 'Disease', 'MESH:D018198', (109, 125)) ('PCC', 'Gene', (68, 71)) ('PCC', 'Gene', '1421', (180, 183)) ('SDH', 'Gene', '6390', (22, 25)) ('PCC/PGL', 'Gene', '1421', (68, 75)) ('PCC', 'Gene', '1421', (68, 71)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('responsible', 'Reg', (35, 46)) ('SDH', 'Gene', (22, 25)) ('PCC', 'Gene', (180, 183)) 60282 30352407 Germline mutations in the SDHB gene are associated with hereditary paraganglioma syndrome type 4 (PGL4), while germline mutations of SDHD are present in hereditary paraganglioma syndrome type 1 (PGL1). ('Germline mutations', 'Var', (0, 18)) ('hereditary paraganglioma syndrome', 'Disease', 'MESH:D010235', (56, 89)) ('hereditary paraganglioma syndrome', 'Disease', (56, 89)) ('hereditary paraganglioma syndrome', 'Disease', 'MESH:D010235', (153, 186)) ('SDHD', 'Gene', '6392', (133, 137)) ('paraganglioma', 'Phenotype', 'HP:0002668', (164, 177)) ('PGL4', 'Gene', (98, 102)) ('PGL4', 'Gene', '6390', (98, 102)) ('SDHB', 'Gene', '6390', (26, 30)) ('SDHD', 'Gene', (133, 137)) ('SDHB', 'Gene', (26, 30)) ('hereditary paraganglioma syndrome type 1', 'Disease', (153, 193)) ('hereditary paraganglioma syndrome type 1', 'Disease', 'MESH:D010235', (153, 193)) ('associated', 'Reg', (40, 50)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) 60287 30352407 Here, we report the identification of a nonsense mutation and a splice site mutation in the SDHB gene and an SDHD frameshift mutation by genetic screening and immunohistochemistry. ('SDHB', 'Gene', '6390', (92, 96)) ('SDHD', 'Gene', '6392', (109, 113)) ('nonsense mutation', 'Var', (40, 57)) ('SDHD', 'Gene', (109, 113)) ('SDHB', 'Gene', (92, 96)) ('splice site mutation', 'Var', (64, 84)) 60293 30352407 To conduct Target Capture-Based Deep Sequencing (BGI Health, Shenzhen, Guangdong, China), total DNA isolated from peripheral blood cells of the patients was used to screen for potential mutations in the following genes: SDHAF2, SDHB, SDHC, SDHD, MAX (MYC associated factor X), NF1 (neurofibromin 1), RET (Ret proto-oncogene), VHL (von Hippel-Lindau) and TMEM127 (transmembrane protein 127). ('transmembrane protein 127', 'Gene', '55654', (363, 388)) ('VHL', 'Disease', 'MESH:D006623', (326, 329)) ('von Hippel-Lindau', 'Gene', (331, 348)) ('NF1', 'Gene', '4763', (277, 280)) ('MYC associated factor X', 'Gene', '4149', (251, 274)) ('transmembrane protein 127', 'Gene', (363, 388)) ('SDHD', 'Gene', (240, 244)) ('SDHB', 'Gene', '6390', (228, 232)) ('SDHC', 'Gene', (234, 238)) ('MAX', 'Gene', (246, 249)) ('NF1', 'Gene', (277, 280)) ('von Hippel-Lindau', 'Gene', '7428', (331, 348)) ('neurofibromin 1', 'Gene', '4763', (282, 297)) ('TMEM127', 'Gene', (354, 361)) ('VHL', 'Disease', (326, 329)) ('RET', 'Gene', '5979', (300, 303)) ('SDHB', 'Gene', (228, 232)) ('neurofibromin 1', 'Gene', (282, 297)) ('Ret', 'Gene', (305, 308)) ('TMEM127', 'Gene', '55654', (354, 361)) ('SDHAF2', 'Gene', '54949', (220, 226)) ('mutations', 'Var', (186, 195)) ('SDHAF2', 'Gene', (220, 226)) ('SDHC', 'Gene', '6391', (234, 238)) ('patients', 'Species', '9606', (144, 152)) ('SDHD', 'Gene', '6392', (240, 244)) ('MYC associated factor X', 'Gene', (251, 274)) ('MAX', 'Gene', '4149', (246, 249)) ('RET', 'Gene', (300, 303)) ('Ret', 'Gene', '5979', (305, 308)) 60294 30352407 Of these patients, 3 with SDHB or SDHD mutations; 21 in 5 families with VHL mutations; 10 in 4 families with RET mutations and 1 with somatic HIF2A, which has been described in our previous study. ('patients', 'Species', '9606', (9, 17)) ('RET', 'Gene', (109, 112)) ('mutations', 'Var', (76, 85)) ('HIF2A', 'Gene', '2034', (142, 147)) ('mutations', 'Var', (39, 48)) ('SDHD', 'Gene', (34, 38)) ('SDHB', 'Gene', '6390', (26, 30)) ('SDHB', 'Gene', (26, 30)) ('SDHD', 'Gene', '6392', (34, 38)) ('VHL', 'Disease', 'MESH:D006623', (72, 75)) ('RET', 'Gene', '5979', (109, 112)) ('VHL', 'Disease', (72, 75)) ('HIF2A', 'Gene', (142, 147)) 60303 30352407 Among all the patients, three were identified with SDHx mutations. ('patients', 'Species', '9606', (14, 22)) ('mutations', 'Var', (56, 65)) ('SDHx', 'Chemical', '-', (51, 55)) ('SDHx', 'Gene', (51, 55)) 60323 30352407 We identified two heterozygous germline mutations in the SDHB gene: c.343C>T in proband 1 (Fig. ('SDHB', 'Gene', '6390', (57, 61)) ('SDHB', 'Gene', (57, 61)) ('c.343C>T', 'Var', (68, 76)) ('c.343C>T', 'Mutation', 'rs751000085', (68, 76)) 60325 30352407 In addition, a frame-shift variant (c.334_337delACTG, p.Asp113Metfs*21) in exon 4 of the SDHD gene was detected in proband 3 (Fig. ('c.334_337delACTG', 'Var', (36, 52)) ('p.Asp113Metfs*21', 'Var', (54, 70)) ('c.334_337delACTG', 'Mutation', 'c.334_337delACTG', (36, 52)) ('SDHD', 'Gene', '6392', (89, 93)) ('SDHD', 'Gene', (89, 93)) ('p.Asp113Metfs*21', 'Mutation', 'rs587776648', (54, 70)) 60326 30352407 In addition, we identified a somatic point mutation in the SRD5A2 gene (c.578A>G) in proband 2. ('c.578A>G', 'Var', (72, 80)) ('SRD5A2', 'Gene', (59, 65)) ('c.578A>G', 'Mutation', 'rs763296857', (72, 80)) ('SRD5A2', 'Gene', '6716', (59, 65)) 60327 30352407 Since multiple lines of evidence indicate that IHC staining of SDHB is a robust and reliable surrogate marker for SDH gene mutations, we conducted IHC of SDHB on all the tumor tissues. ('SDHB', 'Gene', (63, 67)) ('SDH', 'Gene', '6390', (63, 66)) ('tumor', 'Disease', 'MESH:D009369', (170, 175)) ('SDH', 'Gene', '6390', (114, 117)) ('SDH', 'Gene', (154, 157)) ('tumor', 'Phenotype', 'HP:0002664', (170, 175)) ('SDH', 'Gene', (63, 66)) ('SDHB', 'Gene', '6390', (154, 158)) ('tumor', 'Disease', (170, 175)) ('SDH', 'Gene', '6390', (154, 157)) ('SDH', 'Gene', (114, 117)) ('SDHB', 'Gene', '6390', (63, 67)) ('SDHB', 'Gene', (154, 158)) ('mutations', 'Var', (123, 132)) 60328 30352407 Positive expression of SDHB was observed using IHC staining in proband 1-derived tumor tissues that harbor the c.343C>T SDHB gene mutation (Fig. ('c.343C>T', 'Mutation', 'rs751000085', (111, 119)) ('SDHB', 'Gene', '6390', (23, 27)) ('c.343C>T', 'Var', (111, 119)) ('SDHB', 'Gene', '6390', (120, 124)) ('tumor', 'Disease', 'MESH:D009369', (81, 86)) ('SDHB', 'Gene', (23, 27)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('SDHB', 'Gene', (120, 124)) ('tumor', 'Disease', (81, 86)) 60329 30352407 Expression of the c.541_2A>G SDHB mutant allele (proband 2) in PGL cells and surrounding endothelial and inflammatory cells revealed a distinct cytoplasmic granular staining pattern (Fig. ('c.541_2A>G', 'Var', (18, 28)) ('c.541_2A>G', 'Mutation', 'c.541_2A>G', (18, 28)) ('SDHB', 'Gene', (29, 33)) ('SDHB', 'Gene', '6390', (29, 33)) 60330 30352407 Tissue samples of proband 3 (c.334_337delACTG mutation) were negative for SDHD (Fig. ('SDHD', 'Gene', (74, 78)) ('c.334_337delACTG mutation', 'Var', (29, 54)) ('c.334_337delACTG', 'Mutation', 'c.334_337delACTG', (29, 45)) ('SDHD', 'Gene', '6392', (74, 78)) 60333 30352407 Of which, Ivana Jochmanova reported the c.343C>T as a function affected mutation; van Hulsteijn et al. ('van Hulsteijn', 'Disease', 'MESH:C536530', (82, 95)) ('c.343C>T', 'Mutation', 'rs751000085', (40, 48)) ('c.343C>T', 'Var', (40, 48)) ('van Hulsteijn', 'Disease', (82, 95)) 60334 30352407 reported the c.343C>T as a pathologic mutation, which leads to malignant PGL with bone metastasis. ('bone metastasis', 'Disease', (82, 97)) ('leads to', 'Reg', (54, 62)) ('c.343C>T', 'Mutation', 'rs751000085', (13, 21)) ('bone metastasis', 'Disease', 'MESH:D009362', (82, 97)) ('c.343C>T', 'Var', (13, 21)) ('malignant PGL', 'Disease', (63, 76)) 60335 30352407 Although the c.343C>T mutation results in the replacement of an arginine by a termination codon (p.Arg115Ter), IHC staining the showed positive SDHB in the tumor from the 14-year-old boy (Fig. ('c.343C>T', 'Var', (13, 21)) ('arginine', 'Chemical', 'MESH:D001120', (64, 72)) ('tumor', 'Disease', 'MESH:D009369', (156, 161)) ('replacement', 'MPA', (46, 57)) ('c.343C>T', 'Mutation', 'rs751000085', (13, 21)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('SDHB', 'Gene', '6390', (144, 148)) ('p.Arg115Ter', 'Mutation', 'rs6256', (97, 108)) ('tumor', 'Disease', (156, 161)) ('boy', 'Species', '9606', (183, 186)) ('SDHB', 'Gene', (144, 148)) ('results in', 'Reg', (31, 41)) 60336 30352407 A recent nationwide study of 194 SDHB mutation carriers found the prevalence of c.343C>T mutation is about 1.5% (3/194; 1 with PCC and 2 with PGLs), suggesting that this mutation is likely to be underestimated. ('SDHB', 'Gene', '6390', (33, 37)) ('c.343C>T', 'Mutation', 'rs751000085', (80, 88)) ('PCC', 'Gene', (127, 130)) ('SDHB', 'Gene', (33, 37)) ('c.343C>T', 'Var', (80, 88)) ('PCC', 'Gene', '1421', (127, 130)) 60343 30352407 It seems that the c.541-2A>G carriers had a higher penetrance, early onset, more severe and complicated phenotypes, which warrants further investigation. ('higher', 'PosReg', (44, 50)) ('c.541-2A>G', 'Mutation', 'rs786201161', (18, 28)) ('c.541-2A>G', 'Var', (18, 28)) 60344 30352407 Though more than 130 unique SDHD gene mutations have been reported in hereditary PGL1, only two studies listed the c.334_337delACTG variant as we report here. ('SDHD', 'Gene', (28, 32)) ('mutations', 'Var', (38, 47)) ('c.334_337delACTG', 'Mutation', 'c.334_337delACTG', (115, 131)) ('SDHD', 'Gene', '6392', (28, 32)) 60345 30352407 reported the c.334_337delACTG mutant in a sporadic carrier and a syndromic or familial carrier, while Benn et al. ('c.334_337delACTG', 'Mutation', 'c.334_337delACTG', (13, 29)) ('syndromic', 'Disease', (65, 74)) ('c.334_337delACTG', 'Var', (13, 29)) ('syndromic', 'Disease', 'MESH:D013577', (65, 74)) 60347 30352407 Since none of these groups investigated the expression of this mutated gene, we are the first to study the expression of SDHD and SDHB in the c.334-337delATCG carrier. ('SDHD', 'Gene', (121, 125)) ('c.334-337delATCG', 'Var', (142, 158)) ('SDHB', 'Gene', '6390', (130, 134)) ('c.334-337delATCG', 'Mutation', 'c.334_337delATCG', (142, 158)) ('SDHB', 'Gene', (130, 134)) ('SDHD', 'Gene', '6392', (121, 125)) 60349 30352407 A previous study suggests that a weak-diffused pattern of SDHB may have a stronger correlation with mutations in SDHD rather than SDHB. ('mutations', 'Var', (100, 109)) ('SDHB', 'Gene', (58, 62)) ('SDHD', 'Gene', (113, 117)) ('SDHD', 'Gene', '6392', (113, 117)) ('SDHB', 'Gene', '6390', (130, 134)) ('SDHB', 'Gene', (130, 134)) ('SDHB', 'Gene', '6390', (58, 62)) 60350 30352407 Based on the findings in our study, c.334_337delATCG in the SDHD gene appeared to affect SDHB expression and thus linked to a more grievous phenotype (simultaneous PCC and PGL lesions). ('linked to', 'Reg', (114, 123)) ('c.334_337delATCG', 'Var', (36, 52)) ('SDHD', 'Gene', (60, 64)) ('SDHD', 'Gene', '6392', (60, 64)) ('more', 'PosReg', (126, 130)) ('PCC', 'Gene', (164, 167)) ('c.334_337delATCG', 'Mutation', 'c.334_337delATCG', (36, 52)) ('PGL lesions', 'Disease', (172, 183)) ('SDHB', 'Gene', '6390', (89, 93)) ('expression', 'MPA', (94, 104)) ('PCC', 'Gene', '1421', (164, 167)) ('affect', 'Reg', (82, 88)) ('SDHB', 'Gene', (89, 93)) 60353 30352407 SDHB mutations mainly predispose to extra-adrenal PGLs and to a lesser extent to adrenal PCCs and HNPGLs, while SDHD mutations are typically associated with multifocal HNPGLs and less frequently with adrenal PCCs and extra-adrenal PGLs. ('mutations', 'Var', (117, 126)) ('PCC', 'Gene', (89, 92)) ('extra-adrenal PGLs', 'Disease', (36, 54)) ('SDHD', 'Gene', (112, 116)) ('mutations', 'Var', (5, 14)) ('SDHD', 'Gene', '6392', (112, 116)) ('predispose', 'Reg', (22, 32)) ('associated with', 'Reg', (141, 156)) ('PCC', 'Gene', '1421', (208, 211)) ('SDHB', 'Gene', '6390', (0, 4)) ('PCC', 'Gene', '1421', (89, 92)) ('SDHB', 'Gene', (0, 4)) ('PCC', 'Gene', (208, 211)) 60355 30352407 Notably, the c.334_337delACTG carrier in this study showed HNPGL in the right jugular foramen five years before entry into our study. ('c.334_337delACTG', 'Mutation', 'c.334_337delACTG', (13, 29)) ('c.334_337delACTG', 'Var', (13, 29)) ('HNPGL', 'Gene', (59, 64)) 60364 30352407 The two SDHB germline mutation carriers did not present with metastases, but a literature review suggests that patients with such mutations may present with metastases in the neck, lung, mediastinum, abdomen and pelvic region. ('metastases', 'Disease', 'MESH:D009362', (157, 167)) ('SDHB', 'Gene', '6390', (8, 12)) ('present', 'Reg', (144, 151)) ('metastases', 'Disease', (61, 71)) ('SDHB', 'Gene', (8, 12)) ('mutations', 'Var', (130, 139)) ('metastases', 'Disease', (157, 167)) ('metastases', 'Disease', 'MESH:D009362', (61, 71)) ('patients', 'Species', '9606', (111, 119)) 60365 30352407 Rare cases of metastatic HNPGLs have been described within SDHD mutation carriers and their estimated prevalence is 0-10%. ('SDHD', 'Gene', (59, 63)) ('SDHD', 'Gene', '6392', (59, 63)) ('mutation', 'Var', (64, 72)) ('metastatic HNPGLs', 'Disease', (14, 31)) 60368 30352407 Though it is likely that not all SDHB IHC-negative tumors will carry SDH mutations, IHC remains a phenotypic test as well as an indirect genotypic test. ('SDH', 'Gene', (33, 36)) ('SDH', 'Gene', '6390', (69, 72)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('SDHB', 'Gene', '6390', (33, 37)) ('SDH', 'Gene', (69, 72)) ('SDHB', 'Gene', (33, 37)) ('SDH', 'Gene', '6390', (33, 36)) ('tumors', 'Disease', (51, 57)) ('tumors', 'Disease', 'MESH:D009369', (51, 57)) ('tumors', 'Phenotype', 'HP:0002664', (51, 57)) ('mutations', 'Var', (73, 82)) 60371 30352407 In conclusion, we presented three gene-specific germline mutations in SDH genes and their relevant phenotypes. ('germline mutations', 'Var', (48, 66)) ('SDH', 'Gene', '6390', (70, 73)) ('SDH', 'Gene', (70, 73)) 60372 30352407 Findings of our study suggest that the incidence of c.343C>T mutations is likely underestimated in PCC/PGL patients. ('c.343C>T', 'Mutation', 'rs751000085', (52, 60)) ('PCC/PGL', 'Gene', (99, 106)) ('c.343C>T', 'Var', (52, 60)) ('PCC/PGL', 'Gene', '1421', (99, 106)) ('patients', 'Species', '9606', (107, 115)) 60373 30352407 Patients with the SDHB mutation, c.541-2A>G, had severe and complicated phenotypes. ('SDHB', 'Gene', (18, 22)) ('c.541-2A>G', 'Mutation', 'rs786201161', (33, 43)) ('Patients', 'Species', '9606', (0, 8)) ('c.541-2A>G', 'Var', (33, 43)) ('SDHB', 'Gene', '6390', (18, 22)) 60374 30352407 The c.334_337delATCG SDHD mutation appears to influence SDHB expression and associates with a more aggressive phenotype. ('influence', 'Reg', (46, 55)) ('SDHB', 'Gene', '6390', (56, 60)) ('SDHB', 'Gene', (56, 60)) ('SDHD', 'Gene', '6392', (21, 25)) ('SDHD', 'Gene', (21, 25)) ('c.334_337delATCG', 'Mutation', 'c.334_337delATCG', (4, 20)) ('c.334_337delATCG', 'Var', (4, 20)) ('aggressive', 'CPA', (99, 109)) ('expression', 'MPA', (61, 71)) 60381 30199552 EFS (4 to 16 Hz) induced frequency-dependent aortic contractions in both Crotalus and Bothrops. ('Bothrops', 'Species', '8724', (86, 94)) ('Crotalus', 'Species', '8732', (73, 81)) ('EFS', 'Var', (0, 3)) ('aortic contractions', 'MPA', (45, 64)) 60382 30199552 The EFS-induced contractions were significantly reduced in the presence of either guanethidine or phentolamine in both snakes (p<0.05), whereas tetrodotoxin had no effect in either. ('phentolamine', 'Var', (98, 110)) ('guanethidine', 'Var', (82, 94)) ('reduced', 'NegReg', (48, 55)) ('tetrodotoxin', 'Chemical', 'MESH:D013779', (144, 156)) ('guanethidine', 'Chemical', 'MESH:D006145', (82, 94)) ('phentolamine', 'Chemical', 'MESH:D010646', (98, 110)) 60388 30199552 These findings indicate that the endothelium as the potential source for the catecholamines in response to EFS. ('catecholamines', 'MPA', (77, 91)) ('catecholamines', 'Chemical', 'MESH:D002395', (77, 91)) ('EFS', 'Var', (107, 110)) 60462 29623675 Surgical modifications of the procedure along with advances in postoperative management led to prolonged patient survival, frequently into adulthood. ('patient survival', 'CPA', (105, 121)) ('patient', 'Species', '9606', (105, 112)) ('modifications', 'Var', (9, 22)) ('prolonged', 'PosReg', (95, 104)) 60654 27366943 Nonetheless, the extension and relevance of the MYC-PVT1 deregulation in tumorigenesis has not yet been systematically addressed. ('tumor', 'Disease', 'MESH:D009369', (73, 78)) ('MYC-PVT1', 'Gene', (48, 56)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('tumor', 'Disease', (73, 78)) ('MYC-PVT1', 'Gene', '4609;5820', (48, 56)) ('deregulation', 'Var', (57, 69)) 60657 27366943 PVT1 misregulation in KIRC is mostly associated to promoter hypomethylation rather than locus amplification. ('promoter hypomethylation', 'Var', (51, 75)) ('PVT1', 'Gene', (0, 4)) ('misregulation', 'Var', (5, 18)) ('associated', 'Reg', (37, 47)) ('PVT1', 'Gene', '5820', (0, 4)) 60668 27366943 However, the extension and relevance of MYC and PVT1 alterations in tumorigenesis has not yet been thoroughly addressed. ('tumor', 'Disease', (68, 73)) ('alterations', 'Var', (53, 64)) ('PVT1', 'Gene', (48, 52)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('MYC', 'Gene', (40, 43)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('PVT1', 'Gene', '5820', (48, 52)) 60672 27366943 Moreover, we found that PVT1 up-regulation in KIRC is the result of promoter hypomethylation rather than copy number amplification. ('PVT1', 'Gene', (24, 28)) ('up-regulation', 'PosReg', (29, 42)) ('promoter hypomethylation', 'Var', (68, 92)) ('PVT1', 'Gene', '5820', (24, 28)) 60674 27366943 We set out to investigate the impact of MYC-PVT1 deregulation in several cancers using multi-omics data for approximately 7000 patients from the TCGA (Table S1). ('cancers', 'Disease', (73, 80)) ('MYC-PVT1', 'Gene', '4609;5820', (40, 48)) ('deregulation', 'Var', (49, 61)) ('cancer', 'Phenotype', 'HP:0002664', (73, 79)) ('patients', 'Species', '9606', (127, 135)) ('cancers', 'Phenotype', 'HP:0002664', (73, 80)) ('MYC-PVT1', 'Gene', (40, 48)) ('cancers', 'Disease', 'MESH:D009369', (73, 80)) 60676 27366943 MYC-PVT1 locus amplification was widespread and present in over half of the patients for most tumor types (Figure S1A). ('MYC-PVT1', 'Gene', (0, 8)) ('tumor', 'Disease', 'MESH:D009369', (94, 99)) ('patients', 'Species', '9606', (76, 84)) ('amplification', 'Var', (15, 28)) ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('tumor', 'Disease', (94, 99)) ('MYC-PVT1', 'Gene', '4609;5820', (0, 8)) 60687 27366943 Furthermore, supporting the impact of PVT1 in the clinical outcome of KIRC patients, we observed that high expression levels were significantly associated with neoplasm status after surgery and advanced clinical stage or metastasis (Fisher's Exact -test p-value < 0.05) (Figure 2D). ('associated with', 'Reg', (144, 159)) ('high', 'Var', (102, 106)) ('PVT1', 'Gene', (38, 42)) ('patients', 'Species', '9606', (75, 83)) ('metastasis', 'CPA', (221, 231)) ('neoplasm', 'Disease', (160, 168)) ('neoplasm', 'Phenotype', 'HP:0002664', (160, 168)) ('PVT1', 'Gene', '5820', (38, 42)) ('neoplasm', 'Disease', 'MESH:D009369', (160, 168)) 60696 27366943 Further analysis revealed that most KIRC patients with PVT1 up-regulation also presented PVT1 promoter hypomethylation (Fisher's Exact -test p-value < 0.005, Figure 3C). ('up-regulation', 'PosReg', (60, 73)) ('promoter', 'MPA', (94, 102)) ('PVT1', 'Gene', (89, 93)) ('hypomethylation', 'Var', (103, 118)) ('patients', 'Species', '9606', (41, 49)) ('PVT1', 'Gene', (55, 59)) ('PVT1', 'Gene', '5820', (89, 93)) ('PVT1', 'Gene', '5820', (55, 59)) 60700 27366943 In general, PVT1 locus amplification contributed significantly for PVT1 misregulation in most cancer types (Figure 3F and S3E). ('PVT1', 'Gene', (67, 71)) ('PVT1', 'Gene', '5820', (12, 16)) ('PVT1', 'Gene', '5820', (67, 71)) ('misregulation', 'Var', (72, 85)) ('cancer', 'Phenotype', 'HP:0002664', (94, 100)) ('contributed', 'Reg', (37, 48)) ('PVT1', 'Gene', (12, 16)) ('cancer', 'Disease', (94, 100)) ('cancer', 'Disease', 'MESH:D009369', (94, 100)) 60702 27366943 Overall, our results suggest that PVT1 misregulation in KIRC is the result of promoter hypomethylation. ('PVT1', 'Gene', (34, 38)) ('PVT1', 'Gene', '5820', (34, 38)) ('misregulation', 'Var', (39, 52)) 60704 27366943 We found that patients with high PVT1 expression levels also showed a significant increase of MYC protein concentration for five cancers, including KIRC (Figure 4A). ('cancer', 'Phenotype', 'HP:0002664', (129, 135)) ('cancers', 'Disease', 'MESH:D009369', (129, 136)) ('cancers', 'Phenotype', 'HP:0002664', (129, 136)) ('PVT1', 'Gene', '5820', (33, 37)) ('cancers', 'Disease', (129, 136)) ('expression levels', 'Var', (38, 55)) ('increase', 'PosReg', (82, 90)) ('high', 'Var', (28, 32)) ('MYC protein concentration', 'MPA', (94, 119)) ('PVT1', 'Gene', (33, 37)) ('KIRC', 'Disease', (148, 152)) ('patients', 'Species', '9606', (14, 22)) 60705 27366943 Because MYC is an oncogenic transcription-factor we then explored whether MYC-PVT1 deregulation would impact genes responsive to MYC. ('MYC-PVT1', 'Gene', '4609;5820', (74, 82)) ('deregulation', 'Var', (83, 95)) ('genes responsive', 'MPA', (109, 125)) ('impact', 'Reg', (102, 108)) ('MYC-PVT1', 'Gene', (74, 82)) 60708 27366943 Collectively, our results show that MYC-PVT1 misregulation appears to be an important predictor of poor prognosis in renal carcinoma. ('MYC-PVT1', 'Gene', '4609;5820', (36, 44)) ('misregulation', 'Var', (45, 58)) ('renal carcinoma', 'Disease', 'MESH:C538614', (117, 132)) ('MYC-PVT1', 'Gene', (36, 44)) ('renal carcinoma', 'Disease', (117, 132)) ('carcinoma', 'Phenotype', 'HP:0030731', (123, 132)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (117, 132)) 60710 27366943 Our pan-cancer analysis using diverse multi-omics data revealed that KIRC is the malignancy for which MYC-PVT1 misregulation is most strongly associated with a poor overall survival. ('poor', 'NegReg', (160, 164)) ('cancer', 'Disease', (8, 14)) ('misregulation', 'Var', (111, 124)) ('MYC-PVT1', 'Gene', '4609;5820', (102, 110)) ('malignancy', 'Disease', 'MESH:D009369', (81, 91)) ('cancer', 'Phenotype', 'HP:0002664', (8, 14)) ('KIRC', 'Disease', (69, 73)) ('associated', 'Reg', (142, 152)) ('overall survival', 'MPA', (165, 181)) ('malignancy', 'Disease', (81, 91)) ('MYC-PVT1', 'Gene', (102, 110)) ('cancer', 'Disease', 'MESH:D009369', (8, 14)) 60713 27366943 Hence, our results suggest that promoter hypomethylation is an important cause of PVT1 up-regulation in tumor patients lacking 8q24 locus amplification. ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('PVT1', 'Gene', (82, 86)) ('up-regulation', 'PosReg', (87, 100)) ('tumor', 'Disease', (104, 109)) ('PVT1', 'Gene', '5820', (82, 86)) ('promoter hypomethylation', 'Var', (32, 56)) ('patients', 'Species', '9606', (110, 118)) ('tumor', 'Disease', 'MESH:D009369', (104, 109)) 60722 27366943 Inhibition of MYC is an attractive pharmacological approach for cancer treatment. ('cancer', 'Disease', (64, 70)) ('cancer', 'Disease', 'MESH:D009369', (64, 70)) ('MYC', 'Protein', (14, 17)) ('Inhibition', 'Var', (0, 10)) ('cancer', 'Phenotype', 'HP:0002664', (64, 70)) 60725 27366943 Since loss of PVT1 RNA in colon cancer cell line reduces MYC protein to more normal levels, inhibiting PVT1 could be a more accessible and feasible therapeutic strategy for renal cancer. ('MYC protein', 'Protein', (57, 68)) ('renal cancer', 'Disease', 'MESH:D007680', (173, 185)) ('loss', 'Var', (6, 10)) ('reduces', 'NegReg', (49, 56)) ('cancer', 'Phenotype', 'HP:0002664', (179, 185)) ('colon cancer', 'Phenotype', 'HP:0003003', (26, 38)) ('PVT1', 'Gene', (103, 107)) ('PVT1', 'Gene', (14, 18)) ('colon cancer', 'Disease', 'MESH:D015179', (26, 38)) ('colon cancer', 'Disease', (26, 38)) ('cancer', 'Phenotype', 'HP:0002664', (32, 38)) ('renal cancer', 'Disease', (173, 185)) ('PVT1', 'Gene', '5820', (14, 18)) ('renal cancer', 'Phenotype', 'HP:0009726', (173, 185)) ('PVT1', 'Gene', '5820', (103, 107)) 60726 27366943 Modulation of lncRNAs functions have showed promising anticancer effects and expanded the development of lncRNA-based cancer therapies involving small interfering RNAs, antisense oligonucleotides, ribozymes and aptamers. ('Modulation', 'Var', (0, 10)) ('cancer', 'Disease', (118, 124)) ('cancer', 'Phenotype', 'HP:0002664', (58, 64)) ('oligonucleotides', 'Chemical', 'MESH:D009841', (179, 195)) ('antisense oligonucleotides', 'Var', (169, 195)) ('cancer', 'Phenotype', 'HP:0002664', (118, 124)) ('cancer', 'Disease', 'MESH:D009369', (58, 64)) ('RNAs', 'Protein', (163, 167)) ('small interfering', 'Var', (145, 162)) ('cancer', 'Disease', (58, 64)) ('cancer', 'Disease', 'MESH:D009369', (118, 124)) 60732 27366943 RNA-seq and BS-seq data for HEK293 and KIRC cell lines were obtained from the GEO (http://www.ncbi.nlm.nih.gov/geo/, GSE68938, GSE51867, GSE64451, GSE44866). ('HEK293', 'CellLine', 'CVCL:0045', (28, 34)) ('GSE64451', 'Var', (137, 145)) ('GSE44866', 'Var', (147, 155)) ('GSE51867', 'Var', (127, 135)) ('GSE68938', 'Var', (117, 125)) 60750 27366943 The statistical significance of differences in MYC protein levels between patients with low and high PVT1 expression was assessed using Student's T-test. ('PVT1', 'Gene', '5820', (101, 105)) ('low', 'NegReg', (88, 91)) ('patients', 'Species', '9606', (74, 82)) ('expression', 'MPA', (106, 116)) ('high', 'Var', (96, 100)) ('PVT1', 'Gene', (101, 105)) ('MYC protein levels', 'MPA', (47, 65)) 60873 25007069 ELISA results revealed a significant increase in the levels of met-enkephalin and norepinephrine in the CSF of rats that received micro-HPC injection compared to the empty capsule group (p < 0.05; Table 2). ('micro-HPC', 'Var', (130, 139)) ('norepinephrine', 'MPA', (82, 96)) ('norepinephrine', 'Chemical', 'MESH:D009638', (82, 96)) ('rats', 'Species', '10116', (111, 115)) ('increase', 'PosReg', (37, 45)) ('met-enkephalin', 'Gene', '5443', (63, 77)) ('met-enkephalin', 'Gene', (63, 77)) 60875 25007069 The behavioral results showed that micro-HPC administration significantly increased the withdrawal threshold to the mechanical stimulus in the contralateral and ipsilateral paws compared with the Walker 256 group on days 18, 21 and 25 (p < 0.05, Figure 2C). ('increased', 'PosReg', (74, 83)) ('withdrawal threshold to the mechanical stimulus', 'MPA', (88, 135)) ('micro-HPC', 'Var', (35, 44)) ('rat', 'Species', '10116', (53, 56)) 60877 25007069 These results indicate that intrathecal injection of micro-HPC could reduce the mechanical allodynia induced by Walker 256 inoculation. ('mechanical allodynia', 'Disease', 'MESH:D006930', (80, 100)) ('mechanical allodynia', 'Disease', (80, 100)) ('allodynia', 'Phenotype', 'HP:0012533', (91, 100)) ('reduce', 'NegReg', (69, 75)) ('micro-HPC', 'Var', (53, 62)) ('rat', 'Species', '10116', (31, 34)) 60880 25007069 Moreover, coadministration with naloxone and rauwolscine provided significant incremental reductions on PWT (2.89 +- 1.39 vs. 15.09 +- 1.16 g, p < 0.05, Figure 3). ('reductions', 'NegReg', (90, 100)) ('rauwolscine', 'Var', (45, 56)) ('rat', 'Species', '10116', (20, 23)) ('naloxone', 'Chemical', 'MESH:D009270', (32, 40)) ('rauwolscine', 'Chemical', 'MESH:D015016', (45, 56)) 60881 25007069 These data indicate that the met-enkephalin and norepinephrine secreted by spinal implanted micro-HPC might mediate the anti-allodynia effect. ('met-enkephalin', 'Gene', (29, 43)) ('norepinephrine', 'Chemical', 'MESH:D009638', (48, 62)) ('allodynia', 'Phenotype', 'HP:0012533', (125, 134)) ('allodynia', 'Disease', (125, 134)) ('micro-HPC', 'Var', (92, 101)) ('met-enkephalin', 'Gene', '5443', (29, 43)) ('allodynia', 'Disease', 'MESH:D006930', (125, 134)) 60897 25007069 In terminal cancer patients, implantation of adrenal medullary tissue has been shown to produce pain relief, which is associated with increased level of met-enkephalin and norepinephrine. ('met-enkephalin', 'Gene', (153, 167)) ('pain', 'Disease', 'MESH:D010146', (96, 100)) ('pain', 'Disease', (96, 100)) ('cancer', 'Disease', 'MESH:D009369', (12, 18)) ('patients', 'Species', '9606', (19, 27)) ('implantation', 'Var', (29, 41)) ('cancer', 'Disease', (12, 18)) ('norepinephrine', 'MPA', (172, 186)) ('norepinephrine', 'Chemical', 'MESH:D009638', (172, 186)) ('pain', 'Phenotype', 'HP:0012531', (96, 100)) ('cancer', 'Phenotype', 'HP:0002664', (12, 18)) ('increased', 'PosReg', (134, 143)) ('met-enkephalin', 'Gene', '5443', (153, 167)) 60967 24699253 Of particular concern are patients carrying mutations in the SDHB gene, as these patients are more prone than other patients to develop more aggressive and metastatic disease. ('patients', 'Species', '9606', (116, 124)) ('patients', 'Species', '9606', (81, 89)) ('patients', 'Species', '9606', (26, 34)) ('develop', 'PosReg', (128, 135)) ('mutations', 'Var', (44, 53)) ('SDHB', 'Gene', (61, 65)) ('prone', 'Reg', (99, 104)) 60972 24699253 The rat PHEO cell line PC12, developed in 1976, has a MAX gene deletion that has been recently discovered in a human PHEO kindred. ('PC12', 'CellLine', 'CVCL:0481', (23, 27)) ('human', 'Species', '9606', (111, 116)) ('MAX gene', 'Gene', (54, 62)) ('deletion', 'Var', (63, 71)) ('rat', 'Species', '10116', (4, 7)) 61010 24699253 A subset of patient data that was previously published (GSE 39716) containing SDHB mutation samples was used for comparison with MTT cell line expression. ('MTT', 'Chemical', 'MESH:C070243', (129, 132)) ('GSE', 'Chemical', '-', (56, 59)) ('mutation', 'Var', (83, 91)) ('SDHB', 'Gene', (78, 82)) ('patient', 'Species', '9606', (12, 19)) 61046 24699253 Moreover, our combined analysis of the drug screening and the microarray data sets suggested possible drug combinations that are supported by sporadic, but useful, reports in the literature on similar drugs or drug categories in the treatment of metastatic PHEO/PGL patients. ('combinations', 'Var', (107, 119)) ('patients', 'Species', '9606', (266, 274)) ('metastatic PHEO/PGL', 'Disease', (246, 265)) ('rat', 'Species', '10116', (183, 186)) 61058 24699253 For example, the recent discovery of mutations in the MAX gene (which is part of the Myc-Max-Mxd1 network) highlights the value of the rat PHEO cell line PC12, which lacks a functional MAX gene, as previously described. ('rat', 'Species', '10116', (135, 138)) ('Myc', 'Gene', (85, 88)) ('PC12', 'CellLine', 'CVCL:0481', (154, 158)) ('mutations', 'Var', (37, 46)) ('MAX gene', 'Gene', (54, 62)) ('Myc', 'Gene', '24577', (85, 88)) 61071 24699253 In addition, HDAC inhibitors may influence the level of acetylation of other non-histone effector molecules, including Hsp90 and NF-kB, two other important molecular targets in PHEO. ('Hsp90', 'Gene', '3320', (119, 124)) ('influence', 'Reg', (33, 42)) ('NF-kB', 'Protein', (129, 134)) ('level of acetylation', 'MPA', (47, 67)) ('Hsp90', 'Gene', (119, 124)) ('inhibitors', 'Var', (18, 28)) 61074 24699253 Recent evidence points to a role of DNA methylation in the pathogenesis of SDH mutant PHEOs, opening the opportunity to use drugs such as the DNA methyltransferase inhibitor decitabine (5-aza-2'deoxycytabine), which was one of the hits in our screening. ('SDH', 'Gene', '6390', (75, 78)) ('mutant', 'Var', (79, 85)) ('SDH', 'Gene', (75, 78)) ('PHEOs', 'Disease', (86, 91)) 61089 22812497 The high potassium content (1345.7 mg/100 g) may be responsible for promoting neurite extension, too. ('neurite extension', 'CPA', (78, 95)) ('1345.7 mg/100', 'Var', (28, 41)) ('promoting', 'PosReg', (68, 77)) ('potassium', 'Chemical', 'MESH:D011188', (9, 18)) ('high potassium content', 'Phenotype', 'HP:0002153', (4, 26)) 61124 22812497 [3-[4,5-dimethythiazol-2-yl]-2,5-diphenyltetrazolium bromide] (MTT), phosphate buffered saline (PBS), dimethyl sulfoxide (DMSO), F-12 K medium (Kaighn's Modification of Ham's F-12 Medium), NGF-7 S from murine submaxillary gland, MEK inhibitor (U0126, PD98059), and PI3K inhibitor (LY294002) were obtained from Sigma Co. (St. Louis, MO, USA). ('[3-[4,5-dimethythiazol-2-yl]-2,5-diphenyltetrazolium bromide]', 'Chemical', '-', (0, 61)) ('U0126', 'Chemical', 'MESH:C113580', (244, 249)) ('MEK', 'Gene', '17242', (229, 232)) ('LY294002', 'Chemical', 'MESH:C085911', (281, 289)) ('PD98059', 'Chemical', 'MESH:C093973', (251, 258)) ('dimethyl sulfoxide', 'Chemical', 'MESH:D004121', (102, 120)) ('DMSO', 'Chemical', 'MESH:D004121', (122, 126)) ('U0126', 'Var', (244, 249)) ('MTT', 'Chemical', 'MESH:C070243', (63, 66)) ('phosphate buffered saline', 'Chemical', '-', (69, 94)) ('MEK', 'Gene', (229, 232)) ('murine', 'Species', '10090', (202, 208)) ('LY294002', 'Var', (281, 289)) ('PBS', 'Chemical', '-', (96, 99)) 61152 22812497 Stock solution (10 mM) of MEK inhibitor (U0126, PD98059) and PI3K inhibitor (LY294002) were prepared in DMSO and stored in -20 C in the dark. ('U0126', 'Chemical', 'MESH:C113580', (41, 46)) ('LY294002', 'Chemical', 'MESH:C085911', (77, 85)) ('PD98059', 'Var', (48, 55)) ('MEK', 'Gene', '17242', (26, 29)) ('DMSO', 'Chemical', 'MESH:D004121', (104, 108)) ('LY294002', 'Var', (77, 85)) ('U0126', 'Var', (41, 46)) ('PD98059', 'Chemical', 'MESH:C093973', (48, 55)) ('MEK', 'Gene', (26, 29)) 61153 22812497 10 muM for U0126, 10-50 muM of LY294002; and 40 muM for PD98059 was then prepared by diluting in medium just before use. ('LY294002', 'Var', (31, 39)) ('U0126', 'Chemical', 'MESH:C113580', (11, 16)) ('LY294002', 'Chemical', 'MESH:C085911', (31, 39)) ('U0126', 'Var', (11, 16)) ('PD98059', 'Chemical', 'MESH:C093973', (56, 63)) 61176 22812497 It was shown that neurite outgrowth induced by NGF and aqueous extract of P. giganteus was markedly inhibited (p < 0.05) by MEK inhibitors U0126 and PD98059 (Figure 4a and 4b). ('MEK', 'Gene', '17242', (124, 127)) ('U0126', 'Var', (139, 144)) ('U0126', 'Chemical', 'MESH:C113580', (139, 144)) ('neurite outgrowth', 'CPA', (18, 35)) ('P. giganteus', 'Species', '143291', (74, 86)) ('MEK', 'Gene', (124, 127)) ('PD98059', 'Var', (149, 156)) ('inhibited', 'NegReg', (100, 109)) ('PD98059', 'Chemical', 'MESH:C093973', (149, 156)) 61177 22812497 In fact, in PC12 cell treated with aqueous extract combined with either 10 muM of U0126 or 40 muM of PD98059, the decrease in the number of neuritic processes was significant (p < 0.05). ('PD98059', 'Chemical', 'MESH:C093973', (101, 108)) ('decrease', 'NegReg', (114, 122)) ('U0126', 'Var', (82, 87)) ('U0126', 'Chemical', 'MESH:C113580', (82, 87)) 61178 22812497 On the contrary, an inhibitor of PI3K/Akt pathway, LY294002, did not inhibit aqueous extract- and NGF-induced neurite outgrowth at the concentration of 10 muM and 20 muM (p > 0.05). ('LY294002', 'Var', (51, 59)) ('inhibit', 'NegReg', (69, 76)) ('LY294002', 'Chemical', 'MESH:C085911', (51, 59)) ('Akt', 'Gene', '24185', (38, 41)) ('rat', 'Species', '10116', (142, 145)) ('Akt', 'Gene', (38, 41)) 61179 22812497 LY294002 at the concentration of 30 muM started to cause inhibition effects on PC12 in a concentration-dependent manner. ('LY294002', 'Var', (0, 8)) ('rat', 'Species', '10116', (23, 26)) ('PC12', 'Gene', (79, 83)) ('LY294002', 'Chemical', 'MESH:C085911', (0, 8)) ('inhibition', 'NegReg', (57, 67)) ('rat', 'Species', '10116', (96, 99)) 61180 22812497 At 30 muM of LY294002, the number of elongated PC12 cells with neurites doubled the cell diameter decreased significantly, by 49.6% and 63.5%, for NGF- and aqueous extract-treated cells; respectively (Figure 4c). ('LY294002', 'Chemical', 'MESH:C085911', (13, 21)) ('decreased', 'NegReg', (98, 107)) ('cell diameter', 'CPA', (84, 97)) ('LY294002', 'Var', (13, 21)) 61213 22812497 Besides, lysophosphatidylethanolamine from Grifola frondosa induced activation of ERK1/2 of PC12 cells thus stimulated neurite outgrowth and inhibited serum withdrawal-induced apoptosis. ('stimulated', 'PosReg', (108, 118)) ('serum withdrawal-induced apoptosis', 'CPA', (151, 185)) ('Grifola frondosa', 'Species', '5627', (43, 59)) ('neurite outgrowth', 'CPA', (119, 136)) ('lysophosphatidylethanolamine', 'Var', (9, 37)) ('activation', 'PosReg', (68, 78)) ('ERK1/2', 'Protein', (82, 88)) ('inhibited', 'NegReg', (141, 150)) ('lysophosphatidylethanolamine', 'Chemical', 'MESH:C008301', (9, 37)) 61216 22812497 Similarly, alpha-Phenyl-N-tert-butylnitron was also found to induce neurite outgrowth in PC12 independent of TrkA. ('neurite outgrowth', 'CPA', (68, 85)) ('induce', 'PosReg', (61, 67)) ('TrkA', 'Gene', '59109', (109, 113)) ('TrkA', 'Gene', (109, 113)) ('alpha-Phenyl-N-tert-butylnitron', 'Chemical', '-', (11, 42)) ('alpha-Phenyl-N-tert-butylnitron', 'Var', (11, 42)) 61220 22812497 In the present study, upon inhibition by MEK-selective inhibitor U0126 and PD98059, the percentage of neurite outgrowth decreased significantly. ('decreased', 'NegReg', (120, 129)) ('PD98059', 'Chemical', 'MESH:C093973', (75, 82)) ('U0126', 'Chemical', 'MESH:C113580', (65, 70)) ('MEK', 'Gene', (41, 44)) ('PD98059', 'Var', (75, 82)) ('MEK', 'Gene', '17242', (41, 44)) ('inhibition', 'NegReg', (27, 37)) 61222 22812497 Inhibition of PI3K/Akt signalling by LY294002 also negatively affected neurite outgrowth of PC12. ('neurite outgrowth', 'CPA', (71, 88)) ('Akt', 'Gene', '24185', (19, 22)) ('negatively', 'NegReg', (51, 61)) ('LY294002', 'Chemical', 'MESH:C085911', (37, 45)) ('Akt', 'Gene', (19, 22)) ('LY294002', 'Var', (37, 45)) 61223 22812497 This finding suggested that neurite outgrowth potentiated by P. giganteus in PC12 cells is also regulated by PI3K/Akt signaling pathway. ('P. giganteus', 'Var', (61, 73)) ('potentiated', 'PosReg', (46, 57)) ('Akt', 'Gene', (114, 117)) ('neurite outgrowth', 'CPA', (28, 45)) ('P. giganteus', 'Species', '143291', (61, 73)) ('Akt', 'Gene', '24185', (114, 117)) 61224 22812497 However, it was noted that PI3K/Akt inhibitor did not markedly affect the activities of ERK, therefore neurite extension of PC12 still could be observed at lower concentrations of LY294002. ('rat', 'Species', '10116', (169, 172)) ('Akt', 'Gene', '24185', (32, 35)) ('LY294002', 'Var', (180, 188)) ('Akt', 'Gene', (32, 35)) ('ERK', 'Gene', (88, 91)) ('ERK', 'Gene', '24338', (88, 91)) ('neurite extension', 'CPA', (103, 120)) ('LY294002', 'Chemical', 'MESH:C085911', (180, 188)) 61313 20398431 Alterations in genes encoding nfs-1, frataxin and isd-11 that could lead to a diminished SDH activity have not been detected in NB. ('SDH', 'Gene', (89, 92)) ('nfs-1', 'Gene', (30, 35)) ('diminished', 'NegReg', (78, 88)) ('Alterations', 'Var', (0, 11)) ('isd-11', 'Gene', '57128', (50, 56)) ('SDH', 'Gene', '6390', (89, 92)) ('nfs-1', 'Gene', '9054', (30, 35)) ('isd-11', 'Gene', (50, 56)) 61318 20398431 Pheochromocytomas and paragangliomas frequently exhibit mutations in the succinate dehydrogenase (SDH) subunits SDHB, SDHC, SDHD indicating that these SDH subunits act as tumor suppressors in neuroendocrine tissues. ('tumor', 'Disease', 'MESH:D009369', (171, 176)) ('SDHB', 'Gene', (112, 116)) ('SDH', 'Gene', '6390', (98, 101)) ('SDHC', 'Gene', (118, 122)) ('SDH', 'Gene', '6390', (112, 115)) ('SDH', 'Gene', '6390', (151, 154)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (0, 17)) ('mutations', 'Var', (56, 65)) ('SDH', 'Gene', (98, 101)) ('SDH', 'Gene', '6390', (118, 121)) ('succinate dehydrogenase', 'Gene', (73, 96)) ('tumor', 'Phenotype', 'HP:0002664', (171, 176)) ('paragangliomas', 'Disease', 'MESH:D010235', (22, 36)) ('SDHD', 'Gene', '6392', (124, 128)) ('paragangliomas', 'Phenotype', 'HP:0002668', (22, 36)) ('paraganglioma', 'Phenotype', 'HP:0002668', (22, 35)) ('SDH', 'Gene', (112, 115)) ('SDH', 'Gene', '6390', (124, 127)) ('SDH', 'Gene', (151, 154)) ('Pheochromocytomas', 'Disease', (0, 17)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('SDH', 'Gene', (118, 121)) ('SDHD', 'Gene', (124, 128)) ('SDHC', 'Gene', '6391', (118, 122)) ('exhibit', 'Reg', (48, 55)) ('SDHB', 'Gene', '6390', (112, 116)) ('succinate dehydrogenase', 'Gene', '6390', (73, 96)) ('SDH', 'Gene', (124, 127)) ('tumor', 'Disease', (171, 176)) ('paragangliomas', 'Disease', (22, 36)) 61323 20398431 Pathogenic mutations in SDH5 have been identified in paragangliomas. ('mutations', 'Var', (11, 20)) ('Pathogenic', 'Reg', (0, 10)) ('SDH5', 'Gene', (24, 28)) ('identified', 'Reg', (39, 49)) ('paragangliomas', 'Disease', (53, 67)) ('paragangliomas', 'Disease', 'MESH:D010235', (53, 67)) ('SDH5', 'Gene', '54949', (24, 28)) ('paraganglioma', 'Phenotype', 'HP:0002668', (53, 66)) ('paragangliomas', 'Phenotype', 'HP:0002668', (53, 67)) 61324 20398431 Mutations in the PHOX2B and anaplastic lymphoma kinase (ALK) genes are linked to a predisposition for neuroblastoma. ('PHOX2B', 'Gene', (17, 23)) ('lymphoma', 'Phenotype', 'HP:0002665', (39, 47)) ('anaplastic lymphoma kinase', 'Gene', '238', (28, 54)) ('PHOX2B', 'Gene', '8929', (17, 23)) ('linked to', 'Reg', (71, 80)) ('ALK', 'Gene', '238', (56, 59)) ('neuroblastoma', 'Disease', 'MESH:D009447', (102, 115)) ('Mutations', 'Var', (0, 9)) ('anaplastic lymphoma', 'Phenotype', 'HP:0012193', (28, 47)) ('neuroblastoma', 'Disease', (102, 115)) ('anaplastic lymphoma kinase', 'Gene', (28, 54)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (102, 115)) ('ALK', 'Gene', (56, 59)) 61325 20398431 Mutations in PHOX2B have been found in a minority of familial neuroblastoma cases. ('PHOX2B', 'Gene', (13, 19)) ('familial neuroblastoma', 'Disease', 'MESH:D009447', (53, 75)) ('PHOX2B', 'Gene', '8929', (13, 19)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (62, 75)) ('found', 'Reg', (30, 35)) ('Mutations', 'Var', (0, 9)) ('familial neuroblastoma', 'Disease', (53, 75)) ('familial neuroblastoma', 'Phenotype', 'HP:0006742', (53, 75)) 61326 20398431 Mutations in the VHL gene cause von Hippel-Lindau disease, a dominantly inherited familial cancer syndrome predisposing to a variety of malignant and benign neoplasms, including clear cell renal carcinoma and pheochromocytoma. ('cause', 'Reg', (26, 31)) ('clear cell renal carcinoma', 'Phenotype', 'HP:0006770', (178, 204)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (189, 204)) ('familial cancer syndrome', 'Disease', (82, 106)) ('Mutations', 'Var', (0, 9)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (32, 57)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (209, 225)) ('cell renal carcinoma', 'Disease', 'MESH:C538614', (184, 204)) ('cell renal carcinoma', 'Disease', (184, 204)) ('von Hippel-Lindau disease', 'Disease', (32, 57)) ('VHL', 'Gene', (17, 20)) ('pheochromocytoma', 'Disease', (209, 225)) ('carcinoma', 'Phenotype', 'HP:0030731', (195, 204)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (209, 225)) ('familial cancer syndrome', 'Disease', 'MESH:D009386', (82, 106)) ('neoplasms', 'Phenotype', 'HP:0002664', (157, 166)) ('cancer', 'Phenotype', 'HP:0002664', (91, 97)) ('VHL', 'Gene', '7428', (17, 20)) ('benign neoplasms', 'Disease', (150, 166)) ('benign neoplasms', 'Disease', 'MESH:D009369', (150, 166)) 61329 20398431 Accordingly, not only is SDHB protein suppressed in tumors with mutations in SDHB and SDHD, but also in a subset of tumors with VHL mutations which act through HIF1alpha. ('VHL', 'Gene', '7428', (128, 131)) ('tumors', 'Phenotype', 'HP:0002664', (116, 122)) ('HIF1alpha', 'Gene', '3091', (160, 169)) ('tumors', 'Phenotype', 'HP:0002664', (52, 58)) ('SDHB', 'Gene', '6390', (77, 81)) ('suppressed', 'NegReg', (38, 48)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('mutations', 'Var', (64, 73)) ('HIF1alpha', 'Gene', (160, 169)) ('protein', 'Protein', (30, 37)) ('SDHD', 'Gene', '6392', (86, 90)) ('tumors', 'Disease', (116, 122)) ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('tumors', 'Disease', (52, 58)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDHB', 'Gene', (77, 81)) ('VHL', 'Gene', (128, 131)) ('tumors', 'Disease', 'MESH:D009369', (116, 122)) ('SDHD', 'Gene', (86, 90)) ('tumors', 'Disease', 'MESH:D009369', (52, 58)) ('SDHB', 'Gene', (25, 29)) 61330 20398431 In addition, alterations of proteins involved in Fe-S cluster biogenesis, including Nitrogen fixation-1 homolog (nfs-1), LYR motif containing 4 (LYRM4; isd11), and frataxin, can lead to a reduction of SDH activity. ('nfs-1', 'Gene', (113, 118)) ('nfs-1', 'Gene', '9054', (113, 118)) ('isd11', 'Gene', '57128', (152, 157)) ('SDH', 'Gene', (201, 204)) ('LYRM4', 'Gene', (145, 150)) ('Fe-S', 'Chemical', 'MESH:D007501', (49, 53)) ('reduction', 'NegReg', (188, 197)) ('SDH', 'Gene', '6390', (201, 204)) ('isd11', 'Gene', (152, 157)) ('LYR motif containing 4', 'Gene', (121, 143)) ('activity', 'MPA', (205, 213)) ('LYR motif containing 4', 'Gene', '57128', (121, 143)) ('LYRM4', 'Gene', '57128', (145, 150)) ('Nitrogen', 'Chemical', 'MESH:D009584', (84, 92)) ('alterations', 'Var', (13, 24)) 61331 20398431 For example, disrupted expression of frataxin in murine hepatocytes causes decreased oxidative phosphorylation (OXPHOS) paralleled by reduced activity of iron-sulfur cluster-containing proteins. ('iron', 'Chemical', 'MESH:D007501', (154, 158)) ('activity', 'MPA', (142, 150)) ('iron-sulfur', 'Protein', (154, 165)) ('sulfur', 'Chemical', 'MESH:D013455', (159, 165)) ('decreased', 'NegReg', (75, 84)) ('oxidative phosphorylation', 'MPA', (85, 110)) ('reduced', 'NegReg', (134, 141)) ('disrupted', 'Var', (13, 22)) ('frataxin', 'Gene', (37, 45)) ('murine', 'Species', '10090', (49, 55)) ('expression', 'MPA', (23, 33)) 61343 20398431 Besides the association of SDH and tumor development, loss of NADH: ubiquinone oxidoreductase (complex I) of the respiratory chain has also been shown in oxiphilic tumors. ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('tumor', 'Disease', (164, 169)) ('oxidoreductase', 'Gene', (79, 93)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('NADH', 'Chemical', 'MESH:D009243', (62, 66)) ('tumors', 'Phenotype', 'HP:0002664', (164, 170)) ('oxiphilic tumors', 'Disease', (154, 170)) ('tumor', 'Disease', (35, 40)) ('SDH', 'Gene', (27, 30)) ('oxidoreductase', 'Gene', '8630', (79, 93)) ('loss', 'Var', (54, 58)) ('oxiphilic tumors', 'Disease', 'MESH:D009369', (154, 170)) ('tumor', 'Disease', 'MESH:D009369', (164, 169)) ('tumor', 'Phenotype', 'HP:0002664', (164, 169)) ('SDH', 'Gene', '6390', (27, 30)) 61389 20398431 As pheochromocytomas and NB originate from neural crest and pheochromocytomas frequently show reduced SDH activity caused by pathogenic SDH mutations, we measured the enzymatic activity of SDH in NB. ('SDH', 'Gene', '6390', (189, 192)) ('SDH', 'Gene', (102, 105)) ('SDH', 'Gene', (136, 139)) ('reduced', 'NegReg', (94, 101)) ('pheochromocytomas', 'Disease', (3, 20)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (3, 20)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (60, 77)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (3, 20)) ('SDH', 'Gene', (189, 192)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (60, 76)) ('mutations', 'Var', (140, 149)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (3, 19)) ('pheochromocytomas', 'Disease', (60, 77)) ('activity', 'MPA', (106, 114)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (60, 77)) ('SDH', 'Gene', '6390', (102, 105)) ('SDH', 'Gene', '6390', (136, 139)) 61392 20398431 To evaluate if this massive downregulation of SDH in NB is due to a mutation in one of the four nuclear-encoded SDH subunits, we sequenced the SDH genes. ('SDH', 'Gene', (112, 115)) ('mutation', 'Var', (68, 76)) ('SDH', 'Gene', (143, 146)) ('SDH', 'Gene', '6390', (46, 49)) ('downregulation', 'NegReg', (28, 42)) ('SDH', 'Gene', '6390', (112, 115)) ('SDH', 'Gene', (46, 49)) ('SDH', 'Gene', '6390', (143, 146)) 61396 20398431 In addition, a new nucleotide substitution, c.1948A>G p.Asn650Asp, was detected in three NB samples in SDHA. ('c.1948A>G p.Asn650Asp', 'Var', (44, 65)) ('p.Asn650Asp', 'Mutation', 'p.N650D', (54, 65)) ('p.Asn650Asp', 'Var', (54, 65)) ('c.1948A>G', 'Mutation', 'c.1948A>G', (44, 53)) 61398 20398431 Because low SDH activity can be caused by downregulation of iron-sulfur subunits we also sequenced nfs-1, LYRM4, frataxin (n = 7) for pathogenic mutations. ('nfs-1', 'Gene', (99, 104)) ('nfs-1', 'Gene', '9054', (99, 104)) ('mutations', 'Var', (145, 154)) ('iron', 'Chemical', 'MESH:D007501', (60, 64)) ('iron-sulfur subunits', 'Protein', (60, 80)) ('SDH', 'Gene', '6390', (12, 15)) ('downregulation', 'NegReg', (42, 56)) ('LYRM4', 'Gene', (106, 111)) ('activity', 'MPA', (16, 24)) ('SDH', 'Gene', (12, 15)) ('sulfur', 'Chemical', 'MESH:D013455', (65, 71)) ('LYRM4', 'Gene', '57128', (106, 111)) ('low', 'NegReg', (8, 11)) 61402 20398431 Because the investigated NBs had no pathogenic SDH mutations and the amount of the VHL protein was unaffected, we evaluated the enzymatic activities of the other OXPHOS complexes in comparison to normal kidney tissue. ('NBs', 'Chemical', 'MESH:D009556', (25, 28)) ('VHL', 'Gene', '7428', (83, 86)) ('mutations', 'Var', (51, 60)) ('SDH', 'Gene', (47, 50)) ('SDH', 'Gene', '6390', (47, 50)) ('VHL', 'Gene', (83, 86)) 61413 20398431 Mutations in the assembly factors SDHAF1 and SDH5 could also be excluded to be the cause of the observed phenotype. ('SDHAF1', 'Gene', '644096', (34, 40)) ('SDH5', 'Gene', (45, 49)) ('SDHAF1', 'Gene', (34, 40)) ('Mutations', 'Var', (0, 9)) ('SDH5', 'Gene', '54949', (45, 49)) 61415 20398431 Although NBs and pheochromocytomas share a common origin, carcinogenesis in NBs is not linked to pathogenic VHL mutations, as in a subset of pheochromocytomas. ('VHL', 'Gene', '7428', (108, 111)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (141, 157)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (141, 158)) ('pheochromocytomas', 'Disease', (17, 34)) ('NBs', 'Chemical', 'MESH:D009556', (76, 79)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (17, 34)) ('carcinogenesis', 'Disease', 'MESH:D063646', (58, 72)) ('NBs', 'Chemical', 'MESH:D009556', (9, 12)) ('mutations', 'Var', (112, 121)) ('pheochromocytomas', 'Disease', (141, 158)) ('carcinogenesis', 'Disease', (58, 72)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (141, 158)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (17, 33)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (17, 34)) ('VHL', 'Gene', (108, 111)) 61416 20398431 Deletions of the short arm of chromosome 3 are often observed in a specific subset of aggressive NBs. ('NBs', 'Chemical', 'MESH:D009556', (97, 100)) ('observed', 'Reg', (53, 61)) ('aggressive NBs', 'Disease', (86, 100)) ('short arm', 'Phenotype', 'HP:0009824', (17, 26)) ('Deletions', 'Var', (0, 9)) 61423 20398431 Since frataxin, nfs-1 and isd11 are only three proteins of the ISC (iron sulfur cluster) machinery, it can not be excluded that a mutation in one of the other proteins involved in ISC biogenesis is responsible for the massive impairment of the SDH activity in NB. ('isd11', 'Gene', (26, 31)) ('SDH', 'Gene', '6390', (244, 247)) ('activity', 'MPA', (248, 256)) ('mutation', 'Var', (130, 138)) ('isd11', 'Gene', '57128', (26, 31)) ('nfs-1', 'Gene', '9054', (16, 21)) ('SDH', 'Gene', (244, 247)) ('iron sulfur', 'Chemical', '-', (68, 79)) ('nfs-1', 'Gene', (16, 21)) 61491 32575796 Alterations in either result in mitochondrial defects, which makes their treatment particularly challenging. ('rat', 'Species', '10116', (4, 7)) ('Alterations', 'Var', (0, 11)) ('mitochondrial defects', 'CPA', (32, 53)) ('result in', 'Reg', (22, 31)) 61496 32575796 Mitochondrial disorders play a pivotal role in tumorigenesis by orchestrating metabolic reprogramming, apoptosis, and ROS signaling at virtually all stages, from tumor initiation to metastasis, and mtDNA mutations have been proposed as drivers/modifiers of tumorigenesis in many cancers. ('rat', 'Species', '10116', (71, 74)) ('tumor', 'Disease', (162, 167)) ('mtDNA', 'Gene', (198, 203)) ('cancers', 'Phenotype', 'HP:0002664', (279, 286)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('cancers', 'Disease', (279, 286)) ('tumor', 'Disease', 'MESH:D009369', (162, 167)) ('tumor', 'Disease', (257, 262)) ('cancer', 'Phenotype', 'HP:0002664', (279, 285)) ('ROS', 'Chemical', 'MESH:D017382', (118, 121)) ('tumor', 'Disease', 'MESH:D009369', (257, 262)) ('tumor', 'Phenotype', 'HP:0002664', (162, 167)) ('mutations', 'Var', (204, 213)) ('Mitochondrial disorders', 'Disease', 'MESH:D028361', (0, 23)) ('cancers', 'Disease', 'MESH:D009369', (279, 286)) ('tumor', 'Phenotype', 'HP:0002664', (257, 262)) ('tumor', 'Disease', (47, 52)) ('Mitochondrial disorders', 'Disease', (0, 23)) ('tumor', 'Disease', 'MESH:D009369', (47, 52)) 61498 32575796 These large-scale studies identified intrinsic replicative errors, characterized by an asymmetric bias towards C > T and T > C transitions on the mtDNA heavy and light strands respectively, as the most prominent source of mtDNA mutations, overpowering the 4% caused by ROS exposure. ('C > T', 'Var', (111, 116)) ('overpowering', 'PosReg', (239, 251)) ('ROS', 'Chemical', 'MESH:D017382', (269, 272)) ('T > C', 'Var', (121, 126)) ('mutations', 'Var', (228, 237)) 61499 32575796 While neutral missense mutations were found to gradually drift towards homoplasmy, deleterious frameshift or nonsense mutations, often resulting in truncated proteins, were almost exclusively heteroplasmic, thus highlighting a selective pressure in cancer cells to retain residual mitochondrial functionality. ('proteins', 'Protein', (158, 166)) ('cancer', 'Disease', 'MESH:D009369', (249, 255)) ('resulting', 'Reg', (135, 144)) ('cancer', 'Disease', (249, 255)) ('frameshift', 'Var', (95, 105)) ('missense mutations', 'Var', (14, 32)) ('truncated', 'MPA', (148, 157)) ('nonsense mutations', 'Var', (109, 127)) ('cancer', 'Phenotype', 'HP:0002664', (249, 255)) 61505 32575796 Transmitochondrial cybrid studies thus showed that complex I mutants can exhibit both pro- and anti-tumorigenic effects in cancer, in an OXPHOS- and ROS-dependent fashion, as detailed below. ('cancer', 'Phenotype', 'HP:0002664', (123, 129)) ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('tumor', 'Disease', (100, 105)) ('cancer', 'Disease', 'MESH:D009369', (123, 129)) ('ROS', 'Chemical', 'MESH:D017382', (149, 152)) ('cancer', 'Disease', (123, 129)) ('pro-', 'CPA', (86, 90)) ('tumor', 'Disease', 'MESH:D009369', (100, 105)) ('mutants', 'Var', (61, 68)) 61506 32575796 The ND5 m.12418insA frameshift mutation, found in colorectal cancers, leads to a truncated ND5 protein, which destabilizes the assembly of the membrane-embedded arm of complex I. ('colorectal cancers', 'Disease', (50, 68)) ('truncated', 'MPA', (81, 90)) ('destabilizes', 'NegReg', (110, 122)) ('assembly', 'MPA', (127, 135)) ('leads', 'Reg', (70, 75)) ('cancers', 'Phenotype', 'HP:0002664', (61, 68)) ('ND5 m.12418insA frameshift', 'Var', (4, 30)) ('colorectal cancers', 'Disease', 'MESH:D015179', (50, 68)) ('frameshift', 'Var', (20, 30)) ('cancer', 'Phenotype', 'HP:0002664', (61, 67)) ('m.12418insA', 'Mutation', 'c.M.12418insA', (8, 19)) ('ND5', 'Gene', (91, 94)) 61511 32575796 Osteosarcoma cybrids harboring a heteroplasmic ND5 mutation were thus endowed with resistance to oxidative stress and, subsequently, enhanced tumorigenicity upon subcutaneous injection in nude mice. ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('ND5', 'Gene', (47, 50)) ('tumor', 'Disease', (142, 147)) ('nude mice', 'Species', '10090', (188, 197)) ('Osteosarcoma', 'Disease', (0, 12)) ('mutation', 'Var', (51, 59)) ('Osteosarcoma', 'Phenotype', 'HP:0002669', (0, 12)) ('Osteosarcoma', 'Disease', 'MESH:D012516', (0, 12)) ('oxidative stress', 'Phenotype', 'HP:0025464', (97, 113)) ('tumor', 'Disease', 'MESH:D009369', (142, 147)) ('enhanced', 'PosReg', (133, 141)) 61512 32575796 ND5-mutant homoplasmic cybrids, however, showed increased levels in both mitochondrial and intracellular ROS, which led to apoptosis and prevented tumor formation in vivo. ('prevented', 'NegReg', (137, 146)) ('tumor', 'Disease', (147, 152)) ('ND5-mutant', 'Var', (0, 10)) ('increased', 'PosReg', (48, 57)) ('tumor', 'Phenotype', 'HP:0002664', (147, 152)) ('levels in', 'MPA', (58, 67)) ('ND5-mutant', 'Gene', (0, 10)) ('apoptosis', 'CPA', (123, 132)) ('led to', 'Reg', (116, 122)) ('tumor', 'Disease', 'MESH:D009369', (147, 152)) ('ROS', 'Chemical', 'MESH:D017382', (105, 108)) 61513 32575796 The ND1m.3571insC frameshift mutation, observed in thyroid oncocytic carcinoma, also generates a truncated ND1 protein, which leads to complex I disassembly. ('leads to', 'Reg', (126, 134)) ('frameshift mutation', 'Var', (18, 37)) ('ND1', 'Gene', (107, 110)) ('ND1', 'Gene', '4535', (107, 110)) ('3571insC', 'Mutation', 'c.3571insC', (9, 17)) ('thyroid oncocytic carcinoma', 'Disease', (51, 78)) ('thyroid oncocytic carcinoma', 'Disease', 'MESH:C535584', (51, 78)) ('rat', 'Species', '10116', (89, 92)) ('truncated', 'MPA', (97, 106)) ('ND1', 'Gene', '4535', (4, 7)) ('carcinoma', 'Phenotype', 'HP:0030731', (69, 78)) ('ND1', 'Gene', (4, 7)) 61514 32575796 Transmitochondrial osteosarcoma cybrids expressing this ND1 mutant totally lost their complex I activity and their basal oxygen consumption, revealing a dramatic OXPHOS deficit. ('lost', 'NegReg', (75, 79)) ('basal oxygen consumption', 'MPA', (115, 139)) ('ND1', 'Gene', '4535', (56, 59)) ('complex I activity', 'MPA', (86, 104)) ('ND1', 'Gene', (56, 59)) ('OXPHOS', 'MPA', (162, 168)) ('oxygen', 'Chemical', 'MESH:D010100', (121, 127)) ('osteosarcoma', 'Phenotype', 'HP:0002669', (19, 31)) ('mutant', 'Var', (60, 66)) ('osteosarcoma', 'Disease', (19, 31)) ('osteosarcoma', 'Disease', 'MESH:D012516', (19, 31)) 61517 32575796 Another ND1mutation (missense m.3460G>A, A52T) showed a weaker phenotype as homoplasmic osteosarcoma cybrids retained 50% of complex I activity, with only a partial reduction in basal oxygen consumption. ('osteosarcoma', 'Disease', 'MESH:D012516', (88, 100)) ('ND1', 'Gene', '4535', (8, 11)) ('A52T', 'Mutation', 'rs199476118', (41, 45)) ('ND1', 'Gene', (8, 11)) ('complex I', 'Enzyme', (125, 134)) ('m.3460G>A', 'Mutation', 'rs199476118', (30, 39)) ('activity', 'MPA', (135, 143)) ('basal oxygen consumption', 'MPA', (178, 202)) ('oxygen', 'Chemical', 'MESH:D010100', (184, 190)) ('osteosarcoma', 'Phenotype', 'HP:0002669', (88, 100)) ('missense m.3460G>A', 'Var', (21, 39)) ('osteosarcoma', 'Disease', (88, 100)) 61519 32575796 A third type of mutation (m.4776G>A; A103T), found in the ND2 subunit of complex I in head and neck squamous cell carcinoma, also illustrates the role of ROS accumulation and HIF1alpha stabilization in tumorigenesis. ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (100, 123)) ('head and neck squamous cell carcinoma', 'Phenotype', 'HP:0012288', (86, 123)) ('neck squamous cell carcinoma', 'Disease', 'MESH:D000077195', (95, 123)) ('m.4776G>A', 'Mutation', 'm.4776G>A', (26, 35)) ('tumor', 'Disease', (202, 207)) ('A103T', 'Mutation', 'c.103A>T', (37, 42)) ('ND2', 'Gene', (58, 61)) ('ND2', 'Gene', '4536', (58, 61)) ('carcinoma', 'Phenotype', 'HP:0030731', (114, 123)) ('rat', 'Species', '10116', (136, 139)) ('neck squamous cell carcinoma', 'Disease', (95, 123)) ('tumor', 'Disease', 'MESH:D009369', (202, 207)) ('m.4776G>A; A103T', 'Var', (26, 42)) ('ROS', 'Chemical', 'MESH:D017382', (154, 157)) ('tumor', 'Phenotype', 'HP:0002664', (202, 207)) 61520 32575796 This mutation, which impaired cell respiration and increased ROS production, led to a feedback metabolic signaling involving pyruvate dehydrogenase (PDH) and pyruvate dehydrogenase kinase 2 (PDK2). ('pyruvate dehydrogenase', 'Gene', '54704', (125, 147)) ('increased ROS production', 'Phenotype', 'HP:0025464', (51, 75)) ('PDH', 'Gene', '54704', (149, 152)) ('pyruvate dehydrogenase kinase 2', 'Gene', (158, 189)) ('ROS production', 'MPA', (61, 75)) ('pyruvate dehydrogenase', 'Gene', (125, 147)) ('increased', 'PosReg', (51, 60)) ('pyruvate dehydrogenase kinase 2', 'Gene', '5164', (158, 189)) ('rat', 'Species', '10116', (40, 43)) ('cell respiration', 'MPA', (30, 46)) ('led to', 'Reg', (77, 83)) ('impaired', 'NegReg', (21, 29)) ('PDH', 'Gene', (149, 152)) ('pyruvate dehydrogenase', 'Gene', '54704', (158, 180)) ('feedback metabolic signaling', 'MPA', (86, 114)) ('PDK2', 'Gene', (191, 195)) ('mutation', 'Var', (5, 13)) ('ROS', 'Chemical', 'MESH:D017382', (61, 64)) 61522 32575796 Finally, the highly-metastatic capacities of murine Lewis lung carcinoma and fibrosarcoma were attributed to the missense m.13997G>A (P25L) and frameshift m.13885insC mutations, respectively, in the mtDNA ND6-encoding gene, as further confirmed in cybrids. ('frameshift m.13885insC', 'Var', (144, 166)) ('P25L', 'Mutation', 'rs35460768', (134, 138)) ('fibrosarcoma', 'Disease', (77, 89)) ('m.13885insC', 'Mutation', 'c.M.13885insC', (155, 166)) ('lung carcinoma', 'Disease', 'MESH:D008175', (58, 72)) ('carcinoma', 'Phenotype', 'HP:0030731', (63, 72)) ('m.13997G>A', 'Mutation', 'rs35460768', (122, 132)) ('mtDNA ND6-encoding', 'Gene', (199, 217)) ('fibrosarcoma', 'Phenotype', 'HP:0100244', (77, 89)) ('fibrosarcoma', 'Disease', 'MESH:D005354', (77, 89)) ('missense m.13997G>A', 'Var', (113, 132)) ('lung carcinoma', 'Disease', (58, 72)) ('murine', 'Species', '10090', (45, 51)) ('highly-metastatic capacities', 'CPA', (13, 41)) 61523 32575796 The increased metastatic capacity of these complex I mutants was also associated with a higher ROS production, which led to high levels of HIF1alpha, of the anti-apoptotic MCL-1 protein, and of the vascular endothelial growth factor (VEGF), thus nurturing neoangiogenesis. ('higher', 'PosReg', (88, 94)) ('MCL-1', 'Gene', (172, 177)) ('ROS production', 'MPA', (95, 109)) ('MCL-1', 'Gene', '4170', (172, 177)) ('vascular endothelial growth factor', 'Gene', '7422', (198, 232)) ('HIF1alpha', 'MPA', (139, 148)) ('mutants', 'Var', (53, 60)) ('metastatic capacity', 'CPA', (14, 33)) ('ROS', 'Chemical', 'MESH:D017382', (95, 98)) ('increased', 'PosReg', (4, 13)) ('vascular endothelial growth factor', 'Gene', (198, 232)) 61525 32575796 NADPH-oxidase 1 (NOX1) activity was also shown to contribute to tumorigenesis, together with increased mitochondrial ROS, as a result of complex I dysfunction. ('tumor', 'Disease', (64, 69)) ('NADPH-oxidase 1', 'Gene', (0, 15)) ('dysfunction', 'Var', (147, 158)) ('increased', 'PosReg', (93, 102)) ('NADPH-oxidase 1', 'Gene', '27035', (0, 15)) ('ROS', 'Chemical', 'MESH:D017382', (117, 120)) ('activity', 'MPA', (23, 31)) ('tumor', 'Disease', 'MESH:D009369', (64, 69)) ('mitochondrial ROS', 'MPA', (103, 120)) ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) 61526 32575796 The various osteosarcoma cybrids analyzed, carrying the m.3460G>A/MT-ND1 (A52T), m.11778G>A/MT-ND4 (R340H), and m.14484T>C/MT-ND6 (M64V) point mutations, respectively, exhibited decreased OXPHOS and ATP production. ('MT-ND1', 'Gene', '4535', (66, 72)) ('decreased', 'NegReg', (178, 187)) ('m.3460G>A', 'Mutation', 'rs199476118', (56, 65)) ('osteosarcoma', 'Disease', (12, 24)) ('osteosarcoma', 'Disease', 'MESH:D012516', (12, 24)) ('ATP production', 'MPA', (199, 213)) ('R340H', 'Mutation', 'rs199476112', (100, 105)) ('M64V', 'Mutation', 'rs199476104', (131, 135)) ('m.11778G>A', 'SUBSTITUTION', 'None', (81, 91)) ('m.11778G>A', 'Var', (81, 91)) ('A52T', 'Mutation', 'rs199476118', (74, 78)) ('MT-ND4', 'Gene', (92, 98)) ('osteosarcoma', 'Phenotype', 'HP:0002669', (12, 24)) ('m.14484T>C', 'Var', (112, 122)) ('MT-ND6', 'Gene', '4541', (123, 129)) ('MT-ND6', 'Gene', (123, 129)) ('ATP', 'Chemical', 'MESH:D000255', (199, 202)) ('MT-ND1', 'Gene', (66, 72)) ('MT-ND4', 'Gene', '4538', (92, 98)) ('m.14484T>C', 'SUBSTITUTION', 'None', (112, 122)) ('OXPHOS', 'MPA', (188, 194)) 61528 32575796 Overall, mutations in complex I appear to exert anti-tumorigenic effects only upon complete abolishment of complex I function, which prevents ROS production. ('abolishment of complex I function', 'Phenotype', 'HP:0011923', (92, 125)) ('abolishment', 'NegReg', (92, 103)) ('prevents', 'NegReg', (133, 141)) ('mutations', 'Var', (9, 18)) ('tumor', 'Disease', 'MESH:D009369', (53, 58)) ('ROS', 'Chemical', 'MESH:D017382', (142, 145)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('function', 'MPA', (117, 125)) ('ROS production', 'MPA', (142, 156)) ('tumor', 'Disease', (53, 58)) ('complex I', 'Gene', (22, 31)) ('complex', 'Protein', (107, 114)) 61530 32575796 Several studies reported that OXPHOS dysfunction, as a consequence of complex I impairment, leads to a metabolic shift towards glycolysis, which enables cells to maintain cell growth and ATP production. ('OXPHOS dysfunction', 'Disease', (30, 48)) ('metabolic shift towards glycolysis', 'MPA', (103, 137)) ('enables', 'PosReg', (145, 152)) ('OXPHOS dysfunction', 'Disease', 'MESH:C535470', (30, 48)) ('impairment', 'Var', (80, 90)) ('cell growth', 'CPA', (171, 182)) ('ATP', 'Chemical', 'MESH:D000255', (187, 190)) ('leads to', 'Reg', (92, 100)) 61532 32575796 Increasing the mutational load from 72% of mutant ND5 in heteroplasmic cybrids to 96% in homoplasmic cybrids gradually decreased respiration (from 53% to 17% of wild type (WT)) and OXPHOS-linked ATP production (from 21% to 2% of WT), while it concomitantly increased glucose uptake and lactate production (from 28% to 56% of WT). ('lactate', 'Chemical', 'MESH:D019344', (286, 293)) ('decreased', 'NegReg', (119, 128)) ('glucose uptake', 'MPA', (267, 281)) ('lactate production', 'MPA', (286, 304)) ('OXPHOS-linked ATP production', 'MPA', (181, 209)) ('increased', 'PosReg', (257, 266)) ('mutational', 'Var', (15, 25)) ('ATP', 'Chemical', 'MESH:D000255', (195, 198)) ('rat', 'Species', '10116', (134, 137)) ('mutant', 'Var', (43, 49)) ('glucose', 'Chemical', 'MESH:D005947', (267, 274)) ('respiration', 'MPA', (129, 140)) ('increased glucose', 'Phenotype', 'HP:0003074', (257, 274)) ('ND5', 'Gene', (50, 53)) 61535 32575796 HIF1alpha stimulated the expression of the glucose transporters 1 (SLC2A1) and 3 (SLC2A3) as well as a series of glycolytic enzymes, including phosphofructokinase (PFKP), glyceraldehyde 3-phosphate dehydrogenase (GAPDH), phosphoglycerate kinase (PGK1), and lactate dehydrogenase (LDHA). ('PDH', 'Gene', (215, 218)) ('SLC2A3', 'Gene', (82, 88)) ('SLC2A1', 'Gene', '6513', (67, 73)) ('expression', 'MPA', (25, 35)) ('lactate dehydrogenase', 'Gene', '3939', (257, 278)) ('SLC2A3', 'Gene', '6515', (82, 88)) ('PGK1', 'Gene', '5230', (246, 250)) ('LDHA', 'Gene', '3939', (280, 284)) ('PFKP', 'Gene', (164, 168)) ('HIF1alpha', 'Var', (0, 9)) ('PDH', 'Gene', '54704', (215, 218)) ('PGK1', 'Gene', (246, 250)) ('SLC2A1', 'Gene', (67, 73)) ('glucose', 'Chemical', 'MESH:D005947', (43, 50)) ('lactate dehydrogenase', 'Gene', (257, 278)) ('rat', 'Species', '10116', (233, 236)) ('PFKP', 'Gene', '5214', (164, 168)) ('stimulated', 'PosReg', (10, 20)) ('LDHA', 'Gene', (280, 284)) 61536 32575796 Taken together, these data indicate that complex I mutations could induce a Warburg-like effect in cancer cells, fostering tumor growth. ('Warburg-like effect', 'CPA', (76, 95)) ('mutations', 'Var', (51, 60)) ('tumor', 'Disease', (123, 128)) ('cancer', 'Disease', 'MESH:D009369', (99, 105)) ('cancer', 'Disease', (99, 105)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('tumor', 'Disease', 'MESH:D009369', (123, 128)) ('fostering', 'PosReg', (113, 122)) ('cancer', 'Phenotype', 'HP:0002664', (99, 105)) ('induce', 'PosReg', (67, 73)) 61537 32575796 Beyond the Warburg effect, a metabolic shift towards complex II-dependent succinate oxidation was recently described as an adaptive mechanism to compensate for OXPHOS dysfunction in high-grade prostate cancers, mutant for the ND1 subunit of complex I. ('prostate cancers', 'Phenotype', 'HP:0012125', (193, 209)) ('cancer', 'Phenotype', 'HP:0002664', (202, 208)) ('prostate cancers', 'Disease', (193, 209)) ('OXPHOS dysfunction', 'Disease', 'MESH:C535470', (160, 178)) ('succinate', 'Chemical', 'MESH:D019802', (74, 83)) ('cancers', 'Phenotype', 'HP:0002664', (202, 209)) ('prostate cancers', 'Disease', 'MESH:D011471', (193, 209)) ('mutant', 'Var', (211, 217)) ('ND1', 'Gene', '4535', (226, 229)) ('OXPHOS dysfunction', 'Disease', (160, 178)) ('ND1', 'Gene', (226, 229)) 61540 32575796 The catabolism of serine, a precursor for nucleic acids, proteins, and fatty acids, was also shown to maintain OXPHOS activity in colon cancer cells with mutant complex I, by producing NADH and feeding it to the ETC. ('catabolism', 'MPA', (4, 14)) ('cancer', 'Phenotype', 'HP:0002664', (136, 142)) ('OXPHOS activity', 'MPA', (111, 126)) ('NADH', 'Chemical', 'MESH:D009243', (185, 189)) ('maintain', 'PosReg', (102, 110)) ('colon cancer', 'Disease', 'MESH:D015179', (130, 142)) ('colon cancer', 'Phenotype', 'HP:0003003', (130, 142)) ('fatty acids', 'Chemical', 'MESH:D005227', (71, 82)) ('serine', 'Chemical', 'MESH:D012694', (18, 24)) ('NADH', 'MPA', (185, 189)) ('colon cancer', 'Disease', (130, 142)) ('mutant', 'Var', (154, 160)) 61543 32575796 By applying a genome-wide CRISPR screening on human K562 chronic myeloid leukemia cells concomitantly treated with oligomycin, an inhibitor of complex V, Mootha and colleagues identified a series of both synthetic lethal mutants and suppressors showing that complex I mutations can alleviate complex V dysfunction. ('mutations', 'Var', (268, 277)) ('complex V dysfunction', 'MPA', (292, 313)) ('chronic myeloid leukemia', 'Phenotype', 'HP:0005506', (57, 81)) ('myeloid leukemia', 'Disease', (65, 81)) ('RISP', 'Gene', (27, 31)) ('RISP', 'Gene', '66694', (27, 31)) ('K562', 'CellLine', 'CVCL:0004', (52, 56)) ('human', 'Species', '9606', (46, 51)) ('mutants', 'Var', (221, 228)) ('leukemia', 'Phenotype', 'HP:0001909', (73, 81)) ('myeloid leukemia', 'Disease', 'MESH:D007951', (65, 81)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (65, 81)) ('alleviate', 'NegReg', (282, 291)) ('oligomycin', 'Chemical', 'MESH:D009840', (115, 125)) 61545 32575796 Experimental depletion of cytosolic NADPH, known to drive reductive pathways, suppressed the protective effect of complex I loss against complex V inactivation, thus supporting the role of reductive metabolism in these effects. ('NADPH', 'Gene', (36, 41)) ('NADPH', 'Gene', '1666', (36, 41)) ('complex V inactivation', 'MPA', (137, 159)) ('suppressed', 'NegReg', (78, 88)) ('depletion', 'Var', (13, 22)) ('protective', 'MPA', (93, 103)) 61550 32575796 Deleterious mutations in any of the four subunits of complex II decrease SDH activity and result in abnormal accumulation of succinate, as observed in complex II-mutated cells in vitro and in the extracellular fluids (plasma, urine, saliva, and feces) of complex II-deficient patients. ('patients', 'Species', '9606', (276, 284)) ('decrease', 'NegReg', (64, 72)) ('succinate', 'Chemical', 'MESH:D019802', (125, 134)) ('SDH', 'Gene', '6390', (73, 76)) ('mutations', 'Var', (12, 21)) ('subunits of complex II decrease', 'Phenotype', 'HP:0008314', (41, 72)) ('activity', 'MPA', (77, 85)) ('SDH', 'Gene', (73, 76)) ('accumulation', 'PosReg', (109, 121)) 61551 32575796 Complex II mutations, principally affecting SDHB and SDHD subunits, have been associated with various cancers including hereditary paraganglioma and pheochromocytoma (i.e., neuroendocrine tumors of the paraganglionic tissue), gastrointestinal stromal tumors, and renal cell carcinoma. ('mutations', 'Var', (11, 20)) ('cancers', 'Disease', 'MESH:D009369', (102, 109)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (263, 283)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (173, 194)) ('gastrointestinal stromal tumors', 'Disease', (226, 257)) ('tumors', 'Phenotype', 'HP:0002664', (188, 194)) ('tumors', 'Phenotype', 'HP:0002664', (251, 257)) ('tumors of the paraganglionic tissue', 'Phenotype', 'HP:0002668', (188, 223)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (149, 165)) ('tumor', 'Phenotype', 'HP:0002664', (188, 193)) ('tumor', 'Phenotype', 'HP:0002664', (251, 256)) ('associated', 'Reg', (78, 88)) ('neuroendocrine tumors', 'Disease', (173, 194)) ('renal cell carcinoma', 'Disease', (263, 283)) ('SDHD', 'Gene', '6392', (53, 57)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (263, 283)) ('SDHB', 'Gene', (44, 48)) ('glioma', 'Phenotype', 'HP:0009733', (138, 144)) ('cancers', 'Phenotype', 'HP:0002664', (102, 109)) ('cancers', 'Disease', (102, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (131, 144)) ('cancer', 'Phenotype', 'HP:0002664', (102, 108)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (226, 257)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (226, 257)) ('SDHD', 'Gene', (53, 57)) ('carcinoma', 'Phenotype', 'HP:0030731', (274, 283)) ('hereditary paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (120, 165)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (173, 194)) 61553 32575796 The R22X nonsense SDHD mutation found in hereditary paraganglioma and pheochromocytoma generates a truncated SDHD protein of 21 amino acids (instead of 159), resulting in the loss of complex II electron transfer and enzymatic activities and in the activation of the HIF1alpha signaling pathway. ('activation', 'PosReg', (248, 258)) ('R22X', 'Var', (4, 8)) ('HIF1alpha signaling pathway', 'Pathway', (266, 293)) ('SDHD', 'Gene', '6392', (109, 113)) ('rat', 'Species', '10116', (91, 94)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (70, 86)) ('SDHD', 'Gene', (109, 113)) ('complex II electron transfer', 'MPA', (183, 211)) ('R22X', 'Mutation', 'rs104894306', (4, 8)) ('SDHD', 'Gene', '6392', (18, 22)) ('glioma', 'Phenotype', 'HP:0009733', (59, 65)) ('paraganglioma', 'Phenotype', 'HP:0002668', (52, 65)) ('enzymatic activities', 'MPA', (216, 236)) ('loss', 'NegReg', (175, 179)) ('SDHD', 'Gene', (18, 22)) ('hereditary paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (41, 86)) 61554 32575796 The R22X nonsense SDHD mutation leads to succinate accumulation, which inhibits the activity of prolyl hydroxylase (PHD) and, consequently, induces HIF1alpha stabilization. ('R22X', 'Var', (4, 8)) ('PHD', 'Disease', 'MESH:D011547', (116, 119)) ('induces', 'Reg', (140, 147)) ('PHD', 'Disease', (116, 119)) ('R22X', 'Mutation', 'rs104894306', (4, 8)) ('SDHD', 'Gene', '6392', (18, 22)) ('activity', 'MPA', (84, 92)) ('succinate accumulation', 'MPA', (41, 63)) ('leads to', 'Reg', (32, 40)) ('SDHD', 'Gene', (18, 22)) ('inhibits', 'NegReg', (71, 79)) ('succinate', 'Chemical', 'MESH:D019802', (41, 50)) ('HIF1alpha stabilization', 'MPA', (148, 171)) 61558 32575796 Succinate accumulation resulting from complex II mutations was shown to inhibit other 2-OG-dependent dioxygenases, including the Jumonji C (JmjC)-domain containing histone lysine demethylases (KDMs) and the ten-eleven translocation (TET) family of DNA hydroxylases (Figure 3). ('Succinate accumulation', 'MPA', (0, 22)) ('mutations', 'Var', (49, 58)) ('Succinate', 'Chemical', 'MESH:D019802', (0, 9)) ('TET', 'Chemical', '-', (233, 236)) ('oxygen', 'Chemical', 'MESH:D010100', (103, 109)) ('inhibit', 'NegReg', (72, 79)) ('2-OG-dependent dioxygenases', 'Enzyme', (86, 113)) ('complex II', 'Gene', (38, 48)) 61560 32575796 Succinate accumulation was shown to reduce TET-induced levels of 5hmC in human embryonic kidney cells (HEK293T) with SDHA/B knockdown as well as in mice livers with transient SDHA knockdown. ('Succinate accumulation', 'MPA', (0, 22)) ('knockdown', 'Var', (124, 133)) ('SDHA/B', 'Gene', (117, 123)) ('TET', 'Chemical', '-', (43, 46)) ('reduce', 'NegReg', (36, 42)) ('TET-induced levels of 5hmC', 'MPA', (43, 69)) ('embryonic kidney', 'Disease', (79, 95)) ('Succinate', 'Chemical', 'MESH:D019802', (0, 9)) ('human', 'Species', '9606', (73, 78)) ('mice', 'Species', '10090', (148, 152)) ('embryonic kidney', 'Disease', 'MESH:D007674', (79, 95)) ('HEK293T', 'CellLine', 'CVCL:0063', (103, 110)) ('5hmC', 'Chemical', 'MESH:C011865', (65, 69)) 61562 32575796 As mentioned above, SDH mutations can promote tumorigenesis by a succinate-mediated genome-wide epigenetic remodeling. ('tumor', 'Disease', 'MESH:D009369', (46, 51)) ('tumor', 'Phenotype', 'HP:0002664', (46, 51)) ('SDH', 'Gene', (20, 23)) ('tumor', 'Disease', (46, 51)) ('promote', 'PosReg', (38, 45)) ('mutations', 'Var', (24, 33)) ('succinate', 'Chemical', 'MESH:D019802', (65, 74)) ('SDH', 'Gene', '6390', (20, 23)) 61563 32575796 As shown in mouse SDHB-knockout chromaffin cells, increased succinate levels were associated with CpG island hypermethylation in the promoters of genes encoding proteins such as the matrix-metalloprotease inhibitor SPOCK2, the metastasis suppressor DNAJA4, and the cell adhesion marker KRT19, thus resulting in a derepression of epithelial-to-mesenchymal transition (EMT). ('SPOCK2', 'Gene', '94214', (215, 221)) ('epithelial-to-mesenchymal transition', 'CPA', (329, 365)) ('derepression', 'PosReg', (313, 325)) ('succinate', 'Chemical', 'MESH:D019802', (60, 69)) ('increased', 'PosReg', (50, 59)) ('KRT19', 'Gene', (286, 291)) ('succinate levels', 'MPA', (60, 76)) ('mouse', 'Species', '10090', (12, 17)) ('KRT19', 'Gene', '16669', (286, 291)) ('chromaffin', 'Chemical', '-', (32, 42)) ('hypermethylation', 'Var', (109, 125)) ('increased succinate levels', 'Phenotype', 'HP:0020149', (50, 76)) ('SPOCK2', 'Gene', (215, 221)) 61570 32575796 Taken together, these studies indicate that the succinate-induced hypermethylator phenotype acts as a double-edged sword in the physiopathology of cancers harboring SDH mutations, as it can either promote or inhibit cancer progression, depending on the genes targeted for methylation. ('SDH', 'Gene', '6390', (165, 168)) ('succinate', 'Chemical', 'MESH:D019802', (48, 57)) ('cancer', 'Disease', (147, 153)) ('cancer', 'Phenotype', 'HP:0002664', (147, 153)) ('mutations', 'Var', (169, 178)) ('inhibit', 'NegReg', (208, 215)) ('cancer', 'Phenotype', 'HP:0002664', (216, 222)) ('SDH', 'Gene', (165, 168)) ('cancer', 'Disease', 'MESH:D009369', (147, 153)) ('cancers', 'Disease', 'MESH:D009369', (147, 154)) ('cancers', 'Phenotype', 'HP:0002664', (147, 154)) ('cancer', 'Disease', (216, 222)) ('cancer', 'Disease', 'MESH:D009369', (216, 222)) ('cancers', 'Disease', (147, 154)) ('promote', 'PosReg', (197, 204)) 61571 32575796 As complex II links the ETC to the TCA cycle, alterations of its functions expectedly result in important metabolic rewiring, found to support the bioenergetic needs of tumors. ('result in', 'Reg', (86, 95)) ('rat', 'Species', '10116', (50, 53)) ('tumors', 'Disease', 'MESH:D009369', (169, 175)) ('TCA', 'Chemical', 'MESH:D014233', (35, 38)) ('tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('alterations', 'Var', (46, 57)) ('tumors', 'Phenotype', 'HP:0002664', (169, 175)) ('metabolic', 'MPA', (106, 115)) ('tumors', 'Disease', (169, 175)) 61587 32575796 Chandel and collaborators recently showed that the activity of complex III (ubiquinol-cytochrome c reductase) of the ETC is needed for the immune suppressive function of Treg cells and that its ablation leads to fatal inflammatory disease in treated mice, through modified metabolite production. ('inflammatory disease', 'Disease', (218, 238)) ('modified', 'Reg', (264, 272)) ('cytochrome c', 'Gene', (86, 98)) ('leads to', 'Reg', (203, 211)) ('ablation', 'Var', (194, 202)) ('ubiquinol', 'Chemical', 'MESH:C003741', (76, 85)) ('inflammatory disease', 'Disease', 'MESH:D007249', (218, 238)) ('cytochrome c', 'Gene', '54205', (86, 98)) ('rat', 'Species', '10116', (19, 22)) ('metabolite production', 'MPA', (273, 294)) ('mice', 'Species', '10090', (250, 254)) 61588 32575796 Mice whose Treg cells are deficient in complex III were generated, by deleting the gene encoding the Rieske iron-sulfur protein (RISP), one of its essential subunits. ('RISP', 'Gene', '66694', (129, 133)) ('RISP', 'Gene', (129, 133)) ('deficient in complex III', 'Phenotype', 'HP:0011924', (26, 50)) ('rat', 'Species', '10116', (60, 63)) ('Rieske iron-sulfur protein', 'Gene', (101, 127)) ('Rieske iron-sulfur protein', 'Gene', '66694', (101, 127)) ('Mice', 'Species', '10090', (0, 4)) ('deleting', 'Var', (70, 78)) 61593 32575796 However, HSC impaired respiration was accompanied by a decreased NAD+/NADH ratio and, as observed for RISP-null Treg cells, levels of the metabolites 2-hydroxyglutarate and succinate were increased, as that of fumarate. ('HSC', 'Var', (9, 12)) ('RISP', 'Gene', '66694', (102, 106)) ('RISP', 'Gene', (102, 106)) ('rat', 'Species', '10116', (75, 78)) ('fumarate', 'Chemical', 'MESH:D005650', (210, 218)) ('respiration', 'MPA', (22, 33)) ('impaired', 'NegReg', (13, 21)) ('NAD+/NADH ratio', 'MPA', (65, 80)) ('decreased', 'NegReg', (55, 64)) ('NADH', 'Chemical', 'MESH:D009243', (70, 74)) ('NAD+', 'Chemical', 'MESH:D009243', (65, 69)) ('rat', 'Species', '10116', (27, 30)) ('rat', 'Species', '10116', (214, 217)) ('succinate', 'Chemical', 'MESH:D019802', (173, 182)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (150, 168)) ('rat', 'Species', '10116', (164, 167)) ('increased', 'PosReg', (188, 197)) 61598 32575796 These effects of a dysfunctional complex III in reducing NAD+/NADH ratios, proliferation, and angiogenesis were confirmed in vivo in mice harboring a deletion of the Uqcrq gene, encoding the ubiquinol-binding protein QPC, a critical subunit of complex III. ('QPC', 'Gene', (217, 220)) ('angiogenesis', 'CPA', (94, 106)) ('Uqcrq', 'Gene', (166, 171)) ('mice', 'Species', '10090', (133, 137)) ('rat', 'Species', '10116', (67, 70)) ('NAD+', 'Chemical', 'MESH:D009243', (57, 61)) ('dysfunctional', 'Disease', 'MESH:D009461', (19, 32)) ('NADH', 'Chemical', 'MESH:D009243', (62, 66)) ('ubiquinol', 'Chemical', 'MESH:C003741', (191, 200)) ('NAD+/NADH ratios', 'MPA', (57, 73)) ('reducing', 'NegReg', (48, 56)) ('QPC', 'Gene', '22272', (217, 220)) ('deletion', 'Var', (150, 158)) ('rat', 'Species', '10116', (82, 85)) ('proliferation', 'CPA', (75, 88)) ('Uqcrq', 'Gene', '22272', (166, 171)) ('dysfunctional', 'Disease', (19, 32)) 61620 32575796 Instead of the etomoxir-dependent pharmacological inhibition of CPT1, CPT1 knock downs were performed. ('CPT1', 'Gene', (70, 74)) ('CPT1', 'Gene', '1374', (64, 68)) ('etomoxir', 'Chemical', 'MESH:C054207', (15, 23)) ('knock downs', 'Var', (75, 86)) ('CPT1', 'Gene', (64, 68)) ('CPT1', 'Gene', '1374', (70, 74)) 61622 32575796 CPT1 knock down in the BT549 breast cancer cell line demonstrated the role of CPT1 for cell proliferation, independently of FAO. ('CPT1', 'Gene', '1374', (78, 82)) ('rat', 'Species', '10116', (99, 102)) ('cell proliferation', 'CPA', (87, 105)) ('rat', 'Species', '10116', (60, 63)) ('CPT1', 'Gene', (78, 82)) ('knock down', 'Var', (5, 15)) ('BT549', 'CellLine', 'CVCL:1092', (23, 28)) ('CPT1', 'Gene', '1374', (0, 4)) ('breast cancer', 'Disease', 'MESH:D001943', (29, 42)) ('cancer', 'Phenotype', 'HP:0002664', (36, 42)) ('breast cancer', 'Disease', (29, 42)) ('breast cancer', 'Phenotype', 'HP:0003002', (29, 42)) ('CPT1', 'Gene', (0, 4)) 61636 32575796 The outcome of these transfers can be beneficial, for instance, in tissue healing; on the other hand, they can also enhance tumor progression. ('transfers', 'Var', (21, 30)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('enhance', 'PosReg', (116, 123)) ('tumor', 'Disease', (124, 129)) ('tissue healing', 'CPA', (67, 81)) ('tumor', 'Disease', 'MESH:D009369', (124, 129)) 61639 32575796 Mitochondria donation from MSCs to damaged or cancer cells has invariably been shown to improve recipient cell survival (see reviews). ('recipient cell survival', 'CPA', (96, 119)) ('cancer', 'Disease', 'MESH:D009369', (46, 52)) ('improve', 'PosReg', (88, 95)) ('cancer', 'Disease', (46, 52)) ('Mitochondria', 'Var', (0, 12)) ('cancer', 'Phenotype', 'HP:0002664', (46, 52)) 61642 32575796 On the contrary, the transfer to T cells of mitochondria originating from myeloid cells was shown to exacerbate inflammation and to lead to asthma aggravation. ('asthma', 'Phenotype', 'HP:0002099', (140, 146)) ('aggravation', 'PosReg', (147, 158)) ('transfer', 'Var', (21, 29)) ('inflammation', 'Disease', 'MESH:D007249', (112, 124)) ('inflammation', 'Disease', (112, 124)) ('exacerbate', 'PosReg', (101, 111)) ('lead to', 'Reg', (132, 139)) ('asthma', 'Disease', (140, 146)) ('asthma', 'Disease', 'MESH:D001249', (140, 146)) 61665 32575796 In particular, OXPHOS restoration in rho0 cells was found to re-activate the enzymatic activity of dihydroorotate dehydrogenase (DHODH), which is the ubiquinone-oxidoreductase responsible for orotate formation through dihydroorotate oxidation (Figure 1). ('ubiquinone', 'Chemical', 'MESH:D014451', (150, 160)) ('rho0', 'Var', (37, 41)) ('orotate', 'Chemical', 'MESH:D009963', (192, 199)) ('dihydroorotate', 'Chemical', 'MESH:C004768', (218, 232)) ('orotate', 'Chemical', 'MESH:D009963', (106, 113)) ('re-activate', 'PosReg', (61, 72)) ('dihydroorotate dehydrogenase', 'Gene', '1723', (99, 127)) ('enzymatic activity', 'MPA', (77, 95)) ('OXPHOS restoration', 'Var', (15, 33)) ('dihydroorotate', 'Chemical', 'MESH:C004768', (99, 113)) ('rat', 'Species', '10116', (27, 30)) ('DHODH', 'Gene', (129, 134)) ('DHODH', 'Gene', '1723', (129, 134)) ('orotate', 'Chemical', 'MESH:D009963', (225, 232)) ('dihydroorotate dehydrogenase', 'Gene', (99, 127)) 61694 32575796 In NSCLC and RCC patients, the presence of Akkermansia muciniphila in their gut microbiota was associated to a better response to PD-1 blockade. ('NSCLC', 'Disease', (3, 8)) ('Akkermansia muciniphila', 'Gene', (43, 66)) ('Akkermansia muciniphila', 'Species', '239935', (43, 66)) ('NSCLC', 'Disease', 'MESH:D002289', (3, 8)) ('better', 'PosReg', (111, 117)) ('RCC', 'Disease', 'MESH:C538614', (13, 16)) ('RCC', 'Disease', (13, 16)) ('patients', 'Species', '9606', (17, 25)) ('RCC', 'Phenotype', 'HP:0005584', (13, 16)) ('NSCLC', 'Phenotype', 'HP:0030358', (3, 8)) ('response', 'MPA', (118, 126)) ('presence', 'Var', (31, 39)) 61723 32575796 One example of transient gene therapy is the expression of the wild-type and functional subunit 4 of NADH dehydrogenase (ND4), via adeno-associated virus (AAV) vectors and by intravitreal injection, in patients suffering from LHON disease in connection with the point mutation G11778A in their mitochondrial ND4 encoding gene. ('ND4', 'Gene', (121, 124)) ('NADH dehydrogenase', 'Gene', 'None', (101, 119)) ('LHON disease', 'Phenotype', 'HP:0030831', (226, 238)) ('LHON disease', 'Disease', (226, 238)) ('G11778A', 'Var', (277, 284)) ('patients', 'Species', '9606', (202, 210)) ('adeno-associated virus', 'Species', '272636', (131, 153)) ('NADH dehydrogenase', 'Gene', (101, 119)) ('AAV', 'Species', '272636', (155, 158)) ('G11778A', 'Mutation', 'g.11778G>A', (277, 284)) 61726 32575796 This is notably owing to the non-functional ubiquitin ligase Parkin and PTEN-induced putative kinase 1 (PINK1) in connection with the numerous mutations found in the corresponding PARK2 and PINK1 genes in patients with Parkinson's disease. ('patients', 'Species', '9606', (205, 213)) ('PARK2', 'Gene', (180, 185)) ("Parkinson's disease", 'Disease', (219, 238)) ('PINK1', 'Gene', (104, 109)) ('PINK1', 'Gene', (190, 195)) ("Parkinson's disease", 'Disease', 'MESH:D010300', (219, 238)) ('mutations', 'Var', (143, 152)) 61730 32575796 Mitochondrial dysfunction, leading to decreased ATP production, increased oxidative stress, apoptosis, and loss of tissue function, is the hallmark of aging and of numerous pathologies, including those caused by ischemia injury, mtDNA mutations, and metabolic disorders. ('tissue', 'MPA', (115, 121)) ('metabolic disorders', 'Disease', 'MESH:D008659', (250, 269)) ('decreased', 'NegReg', (38, 47)) ('apoptosis', 'CPA', (92, 101)) ('ischemia injury', 'Disease', (212, 227)) ('ATP production', 'MPA', (48, 62)) ('increased oxidative stress', 'Phenotype', 'HP:0025464', (64, 90)) ('mutations', 'Var', (235, 244)) ('Mitochondrial dysfunction', 'Disease', (0, 25)) ('metabolic disorders', 'Disease', (250, 269)) ('mtDNA', 'Gene', (229, 234)) ('Mitochondrial dysfunction', 'Disease', 'MESH:D028361', (0, 25)) ('oxidative stress', 'MPA', (74, 90)) ('Mitochondrial dysfunction', 'Phenotype', 'HP:0003287', (0, 25)) ('oxidative stress', 'Phenotype', 'HP:0025464', (74, 90)) ('ATP', 'Chemical', 'MESH:D000255', (48, 51)) ('increased', 'PosReg', (64, 73)) ('ischemia injury', 'Disease', 'MESH:D007511', (212, 227)) 61742 32575796 The Q-SYMBIO latest trial and longer (two-year end-point) to date suggested that the supplementation with CoQ10 reduced cardiovascular death, but will definitely need to be confirmed owing to the small number of patients tested. ('CoQ10', 'Chemical', 'MESH:C024989', (106, 111)) ('cardiovascular death', 'Disease', (120, 140)) ('supplementation', 'Var', (85, 100)) ('cardiovascular death', 'Disease', 'MESH:D002318', (120, 140)) ('patients', 'Species', '9606', (212, 220)) ('reduced', 'NegReg', (112, 119)) ('CoQ10', 'Gene', (106, 111)) 61753 31528828 New Insights Into Pheochromocytoma Surveillance of Young Patients With VHL Missense Mutations Von Hippel-Lindau (VHL) disease is an autosomal dominant syndrome caused by germline mutations in the VHL gene. ('Pheochromocytoma Surveillance', 'Disease', (18, 47)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (18, 34)) ('caused by', 'Reg', (160, 169)) ('VHL', 'Gene', (113, 116)) ('VHL', 'Gene', (71, 74)) ('autosomal dominant syndrome', 'Disease', 'MESH:D030342', (132, 159)) ('Missense Mutations', 'Var', (75, 93)) ('autosomal dominant syndrome', 'Disease', (132, 159)) ('Patients', 'Species', '9606', (57, 65)) ('VHL', 'Gene', '7428', (71, 74)) ('VHL', 'Gene', '7428', (113, 116)) ('Von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (94, 125)) ('VHL', 'Gene', (196, 199)) ('Pheochromocytoma Surveillance', 'Disease', 'MESH:D010673', (18, 47)) ('VHL', 'Gene', '7428', (196, 199)) ('germline mutations', 'Var', (170, 188)) 61759 31528828 VHL missense mutations were identified in 11 of 22 families (50%), frameshift mutations in four (18.2%), stop codon in three (13.6%), splicing site in two (9.1%), and large gene deletion in two (9.1%). ('large gene deletion', 'Var', (167, 186)) ('frameshift mutations', 'Var', (67, 87)) ('missense mutations', 'Var', (4, 22)) ('VHL', 'Gene', (0, 3)) ('stop', 'MPA', (105, 109)) ('VHL', 'Gene', '7428', (0, 3)) ('splicing site', 'Var', (134, 147)) 61760 31528828 The codon 167 (n = 10) was a hotspot for VHL mutations and was significantly associated with PHEO (90% vs. 38%; P = 0.007). ('mutations', 'Var', (45, 54)) ('codon 167', 'Var', (4, 13)) ('PHEO', 'Disease', (93, 97)) ('VHL', 'Gene', (41, 44)) ('VHL', 'Gene', '7428', (41, 44)) ('associated', 'Reg', (77, 87)) 61761 31528828 PHEOs and pancreatic neuroendocrine tumors (PNETs) were strongly associated with VHL missense mutations compared with other mutations (89.5% vs. 0% and 73.7% vs. 16.7%; P = 0.0001 and 0.002, respectively). ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (21, 41)) ('pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (10, 42)) ('VHL', 'Gene', (81, 84)) ('pancreatic neuroendocrine tumors', 'Disease', (10, 42)) ('missense mutations', 'Var', (85, 103)) ('VHL', 'Gene', '7428', (81, 84)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (21, 42)) ('associated', 'Reg', (65, 75)) ('PHEOs', 'Disease', (0, 5)) ('tumor', 'Phenotype', 'HP:0002664', (36, 41)) ('pancreatic neuroendocrine tumor', 'Phenotype', 'HP:0030405', (10, 41)) ('tumors', 'Phenotype', 'HP:0002664', (36, 42)) 61762 31528828 In contrast, pancreatic cysts (91.7% vs. 26.3%; P = 0.0001), renal cysts (66.7% vs. 26.3%; P = 0.027), and central nervous system hemangioblastomas (91.7% vs. 47.3%; P = 0.012) were more frequent in VHL with nonmissense mutations. ('pancreatic cysts', 'Disease', (13, 29)) ('renal cysts', 'Phenotype', 'HP:0000107', (61, 72)) ('pancreatic cyst', 'Phenotype', 'HP:0001737', (13, 28)) ('nonmissense mutations', 'Var', (208, 229)) ('VHL', 'Gene', '7428', (199, 202)) ('central nervous system hemangioblastomas', 'Disease', 'MESH:D018325', (107, 147)) ('pancreatic cysts', 'Disease', 'MESH:D010181', (13, 29)) ('pancreatic cysts', 'Phenotype', 'HP:0001737', (13, 29)) ('VHL', 'Gene', (199, 202)) ('central nervous system hemangioblastomas', 'Disease', (107, 147)) ('renal cysts', 'Disease', 'MESH:D007674', (61, 72)) ('nervous system hemangioblastomas', 'Phenotype', 'HP:0006880', (115, 147)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (130, 146)) ('renal cysts', 'Disease', (61, 72)) 61763 31528828 VHL missense mutations were highly associated with PHEO and PNETs. ('associated', 'Reg', (35, 45)) ('missense mutations', 'Var', (4, 22)) ('PNETs', 'Disease', (60, 65)) ('VHL', 'Gene', (0, 3)) ('PHEO', 'Disease', (51, 55)) ('VHL', 'Gene', '7428', (0, 3)) 61764 31528828 Our data support that in children with VHL harboring missense mutations, biochemical screening for PHEO should be initiated at diagnosis. ('children', 'Species', '9606', (25, 33)) ('VHL', 'Gene', '7428', (39, 42)) ('VHL', 'Gene', (39, 42)) ('missense mutations', 'Var', (53, 71)) 61770 31528828 VHL is primarily caused by inactivation of the VHL tumor-suppressor protein, which plays a key role in cellular oxygen sensing by targeting hypoxia-inducible factors (HIFs) for ubiquitination and proteasomal degradation. ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('inactivation', 'Var', (27, 39)) ('VHL tumor', 'Disease', (47, 56)) ('targeting', 'Reg', (130, 139)) ('hypoxia', 'Disease', (140, 147)) ('hypoxia', 'Disease', 'MESH:D000860', (140, 147)) ('VHL', 'Gene', (47, 50)) ('VHL', 'Gene', (0, 3)) ('ubiquitination', 'Disease', 'MESH:C563003', (177, 191)) ('VHL tumor', 'Disease', 'MESH:D006623', (47, 56)) ('caused by', 'Reg', (17, 26)) ('VHL', 'Gene', '7428', (47, 50)) ('VHL', 'Gene', '7428', (0, 3)) ('ubiquitination', 'Disease', (177, 191)) ('oxygen', 'Chemical', 'MESH:D010100', (112, 118)) ('proteasomal', 'MPA', (196, 207)) 61771 31528828 Approximately 95% to 100% of individuals with a clinical diagnosis of VHL have a disease-causing mutation. ('VHL', 'Gene', (70, 73)) ('disease-causing', 'Reg', (81, 96)) ('VHL', 'Gene', '7428', (70, 73)) ('mutation', 'Var', (97, 105)) 61777 31528828 VHL genetic diagnosis is also essential for family counseling before disease onset in individuals harboring VHL mutations. ('VHL', 'Gene', '7428', (108, 111)) ('mutations', 'Var', (112, 121)) ('VHL', 'Gene', (0, 3)) ('VHL', 'Gene', '7428', (0, 3)) ('VHL', 'Gene', (108, 111)) 61780 31528828 Type 1 VHL is characterized by truncating or large deletion mutations that confer a low risk for PHEOs, whereas type 2 VHL is characterized by missense mutations and an increased risk for PHEOs. ('large deletion mutations', 'Var', (45, 69)) ('VHL', 'Gene', (119, 122)) ('missense mutations', 'Var', (143, 161)) ('VHL', 'Gene', '7428', (119, 122)) ('truncating', 'Var', (31, 41)) ('VHL', 'Gene', (7, 10)) ('VHL', 'Gene', '7428', (7, 10)) ('PHEOs', 'Disease', (97, 102)) 61781 31528828 In addition, PNETs are more often diagnosed in patients with VHL disease with exon 3 intragenic mutations, compared with patients with VHL disease with large deletions. ('VHL disease', 'Disease', 'MESH:D006623', (135, 146)) ('VHL disease', 'Disease', 'MESH:D006623', (61, 72)) ('diagnosed', 'Reg', (34, 43)) ('patients', 'Species', '9606', (47, 55)) ('VHL disease', 'Disease', (135, 146)) ('exon 3', 'Var', (78, 84)) ('VHL disease', 'Disease', (61, 72)) ('PNETs', 'Disease', (13, 18)) ('patients', 'Species', '9606', (121, 129)) 61810 31528828 Two of the three young patients with PNETs had missense VHL mutations. ('VHL', 'Gene', (56, 59)) ('missense', 'Var', (47, 55)) ('VHL', 'Gene', '7428', (56, 59)) ('patients', 'Species', '9606', (23, 31)) ('PNETs', 'Disease', (37, 42)) 61812 31528828 VHL missense mutations were identified in 11 of 22 families (50%), frameshift mutations in four (18.2%), stop codon in three (13.6%), splicing site in two (9.1%), and large gene deletion in two (9.1%; Table 2). ('large gene deletion', 'Var', (167, 186)) ('frameshift mutations', 'Var', (67, 87)) ('missense mutations', 'Var', (4, 22)) ('VHL', 'Gene', (0, 3)) ('stop', 'MPA', (105, 109)) ('splicing', 'Var', (134, 142)) ('VHL', 'Gene', '7428', (0, 3)) 61813 31528828 Codon 167 was a hotspot for VHL mutations, identified in 10 cases from 5 of 22 kindreds (22.7%). ('VHL', 'Gene', (28, 31)) ('mutations', 'Var', (32, 41)) ('VHL', 'Gene', '7428', (28, 31)) 61814 31528828 Among those 10 patients with codon 167 mutations, PNETs developed in six, CNS HBs in five, PCs in three, and RCCs in two. ('CNS HBs', 'Disease', (74, 81)) ('codon 167', 'Gene', (29, 38)) ('patients', 'Species', '9606', (15, 23)) ('PNETs', 'Disease', (50, 55)) ('mutations', 'Var', (39, 48)) ('RCC', 'Disease', 'MESH:C538614', (109, 112)) ('RCC', 'Disease', (109, 112)) ('PCs', 'Disease', (91, 94)) 61815 31528828 Among the 22 families, intragenic VHL mutations (81.8%) were located in exon 1 (six families; 27.3%), exon 2 (two families; 22, 9.1%), and exon 3 (10 families; 45.5%). ('mutations', 'Var', (38, 47)) ('VHL', 'Gene', (34, 37)) ('VHL', 'Gene', '7428', (34, 37)) 61816 31528828 Large VHL deletions (two families; 9.1%) and splicing sites (two families; 9,1%) were less frequent among the 22 families. ('VHL', 'Gene', '7428', (6, 9)) ('VHL', 'Gene', (6, 9)) ('deletions', 'Var', (10, 19)) 61817 31528828 All mutations but one have been previously reported in VHL disease. ('mutations', 'Var', (4, 13)) ('reported', 'Reg', (43, 51)) ('VHL disease', 'Disease', 'MESH:D006623', (55, 66)) ('VHL disease', 'Disease', (55, 66)) 61818 31528828 The germline VHL frameshift mutation c.309_322del14 (p.G104fs*23), leading to a premature stop codon, was previously described as a somatic event in RCCs in the Catalogue of Somatic Mutations in Cancer. ('RCC', 'Disease', (149, 152)) ('premature stop codon', 'MPA', (80, 100)) ('c.309_322del14', 'Mutation', 'rs869025628', (37, 51)) ('Cancer', 'Phenotype', 'HP:0002664', (195, 201)) ('VHL', 'Gene', (13, 16)) ('p.G104fs*23', 'Mutation', 'rs869025628', (53, 64)) ('VHL', 'Gene', '7428', (13, 16)) ('RCC', 'Disease', 'MESH:C538614', (149, 152)) ('c.309_322del14', 'Var', (37, 51)) 61819 31528828 Two large VHL deletions were identified in two families of patients with VHL disease: an exon 1 and a complete VHL deletion (Fig. ('deletion', 'Var', (115, 123)) ('VHL', 'Gene', (73, 76)) ('VHL', 'Gene', (111, 114)) ('VHL', 'Gene', '7428', (73, 76)) ('VHL disease', 'Disease', (73, 84)) ('VHL', 'Gene', '7428', (111, 114)) ('patients', 'Species', '9606', (59, 67)) ('VHL', 'Gene', (10, 13)) ('VHL disease', 'Disease', 'MESH:D006623', (73, 84)) ('VHL', 'Gene', '7428', (10, 13)) 61820 31528828 VHL missense mutations were highly associated with PHEO when compared with other mutations (89.5% vs. 0%; P = 0.0001; chi2= 23.54; Table 5). ('associated', 'Reg', (35, 45)) ('missense mutations', 'Var', (4, 22)) ('VHL', 'Gene', (0, 3)) ('PHEO', 'Disease', (51, 55)) ('VHL', 'Gene', '7428', (0, 3)) 61821 31528828 In addition, PNETs were significantly more frequent in patients with VHL disease with missense mutations when compared with nonmissense defects (73.7% vs. 16.7%; P = 0.002; chi2= 9.57). ('VHL disease', 'Disease', (69, 80)) ('patients', 'Species', '9606', (55, 63)) ('VHL disease', 'Disease', 'MESH:D006623', (69, 80)) ('missense mutations', 'Var', (86, 104)) ('PNETs', 'Disease', (13, 18)) 61822 31528828 In contrast, PCs (91.7% vs. 26.3%; P = 0.0001; chi2= 12,58), renal cysts (66.7% vs. 26.3%; P = 0.027; chi2= 4.92), and CNS HBs (91.7% vs. 47.3%; P = 0.027; chi2= 6.30) were more frequent in patients with nonmissense variants (truncating or large deletion) when compared with missense mutations (Table 5). ('large deletion', 'Var', (240, 254)) ('PCs', 'Disease', (13, 16)) ('renal cysts', 'Phenotype', 'HP:0000107', (61, 72)) ('patients', 'Species', '9606', (190, 198)) ('CNS', 'Disease', (119, 122)) ('truncating', 'Var', (226, 236)) ('renal cysts', 'Disease', 'MESH:D007674', (61, 72)) ('renal cysts', 'Disease', (61, 72)) 61824 31528828 We found that missense mutations conferred an increased risk of PHEO and PNET development but a decreased risk of CNS HBs, PCs, and renal cysts. ('PNET', 'Disease', (73, 77)) ('decreased', 'NegReg', (96, 105)) ('PHEO', 'Disease', (64, 68)) ('CNS HBs', 'Disease', (114, 121)) ('renal cysts', 'Disease', 'MESH:D007674', (132, 143)) ('renal cysts', 'Disease', (132, 143)) ('missense mutations', 'Var', (14, 32)) ('PCs', 'Disease', (123, 126)) ('renal cysts', 'Phenotype', 'HP:0000107', (132, 143)) 61825 31528828 In our cohort, the majority of VHL mutations detected were missense, as previously described. ('VHL', 'Gene', '7428', (31, 34)) ('missense', 'Var', (59, 67)) ('VHL', 'Gene', (31, 34)) ('mutations', 'Var', (35, 44)) 61828 31528828 We also reported here a 5-cm PHEO in a 4-year-old boy with VHL harboring the p.Gly114Ser mutation. ('boy', 'Species', '9606', (50, 53)) ('VHL', 'Gene', '7428', (59, 62)) ('p.Gly114Ser', 'Mutation', 'rs869025636', (77, 88)) ('p.Gly114Ser', 'Var', (77, 88)) ('VHL', 'Gene', (59, 62)) 61830 31528828 In both cases, patients carried VHL missense mutations (Val84Leu and Gln164Arg). ('VHL', 'Gene', (32, 35)) ('patients', 'Species', '9606', (15, 23)) ('VHL', 'Gene', '7428', (32, 35)) ('Gln164Arg', 'SUBSTITUTION', 'None', (69, 78)) ('Gln164Arg', 'Var', (69, 78)) ('Val84Leu', 'SUBSTITUTION', 'None', (56, 64)) ('Val84Leu', 'Var', (56, 64)) 61834 31528828 Similarly, we think PHEO surveillance should initiate before 5 years of age, but only in children with VHL missense mutations and by measuring annually plasma metanephrine levels, without imaging. ('plasma metanephrine levels', 'MPA', (152, 178)) ('VHL', 'Gene', '7428', (103, 106)) ('metanephrine', 'Chemical', 'MESH:D008676', (159, 171)) ('missense mutations', 'Var', (107, 125)) ('children', 'Species', '9606', (89, 97)) ('VHL', 'Gene', (103, 106)) 61835 31528828 Although PHEOs in VHL disease are rarely malignant, starting annual screening of plasma metanephrine levels before 5 years of age only in a subset of children with VHL disease (those harboring VHL missense mutations) is cost-effective and will allow an earlier diagnosis of a tumor associated with hypertension and increased cardiovascular morbidity. ('VHL', 'Gene', '7428', (18, 21)) ('hypertension', 'Disease', (298, 310)) ('VHL disease', 'Disease', 'MESH:D006623', (164, 175)) ('tumor', 'Phenotype', 'HP:0002664', (276, 281)) ('cardiovascular morbidity', 'Phenotype', 'HP:0001626', (325, 349)) ('VHL', 'Gene', (164, 167)) ('metanephrine', 'Chemical', 'MESH:D008676', (88, 100)) ('VHL disease', 'Disease', (164, 175)) ('hypertension', 'Phenotype', 'HP:0000822', (298, 310)) ('VHL', 'Gene', '7428', (164, 167)) ('missense mutations', 'Var', (197, 215)) ('VHL', 'Gene', (193, 196)) ('tumor', 'Disease', (276, 281)) ('children', 'Species', '9606', (150, 158)) ('VHL disease', 'Disease', 'MESH:D006623', (18, 29)) ('VHL', 'Gene', (18, 21)) ('tumor', 'Disease', 'MESH:D009369', (276, 281)) ('VHL', 'Gene', '7428', (193, 196)) ('VHL disease', 'Disease', (18, 29)) ('hypertension', 'Disease', 'MESH:D006973', (298, 310)) 61837 31528828 Codon 167 was a hotspot for VHL mutations in our cohort. ('VHL', 'Gene', (28, 31)) ('mutations', 'Var', (32, 41)) ('VHL', 'Gene', '7428', (28, 31)) 61838 31528828 Mutations in this codon represent approximately 43% of mutations in American and Canadian families with type 2 VHL disease. ('VHL disease', 'Disease', 'MESH:D006623', (111, 122)) ('Mutations in', 'Var', (0, 12)) ('VHL disease', 'Disease', (111, 122)) 61839 31528828 Codon 167 mutations have been associated with an increased risk of PHEO, PNET and RCC development. ('associated', 'Reg', (30, 40)) ('PNET', 'Disease', (73, 77)) ('PHEO', 'Disease', (67, 71)) ('Codon 167 mutations', 'Var', (0, 19)) ('RCC', 'Disease', 'MESH:C538614', (82, 85)) ('RCC', 'Disease', (82, 85)) 61845 31528828 Here, we demonstrated a higher frequency of PNETs in patients with VHL disease with missense mutations (VHL type 2). ('patients', 'Species', '9606', (53, 61)) ('VHL type 2', 'Disease', 'MESH:D006623', (104, 114)) ('VHL disease', 'Disease', (67, 78)) ('PNETs', 'Disease', (44, 49)) ('VHL type 2', 'Disease', (104, 114)) ('VHL disease', 'Disease', 'MESH:D006623', (67, 78)) ('missense mutations', 'Var', (84, 102)) 61848 31528828 showed that PNETs occurred significantly more frequently in patients with VHL disease with intragenic mutations compared with large deletions. ('VHL disease', 'Disease', 'MESH:D006623', (74, 85)) ('PNETs', 'Disease', (12, 17)) ('patients', 'Species', '9606', (60, 68)) ('mutations', 'Var', (102, 111)) ('VHL disease', 'Disease', (74, 85)) 61849 31528828 In addition, PNETs in VHL disease were significantly associated with mutations affecting exon 3 with hotspots in codons 161 and 167. ('VHL disease', 'Disease', 'MESH:D006623', (22, 33)) ('mutations affecting', 'Var', (69, 88)) ('associated', 'Reg', (53, 63)) ('VHL disease', 'Disease', (22, 33)) ('PNETs', 'Disease', (13, 18)) 61856 31528828 In our cohort, the two cases of malignant PNETs in VHL disease carried the missense mutation p.Arg167Trp at codon 167 in exon 3. ('p.Arg167Trp', 'Mutation', 'rs5030820', (93, 104)) ('p.Arg167Trp', 'Var', (93, 104)) ('VHL disease', 'Disease', 'MESH:D006623', (51, 62)) ('VHL disease', 'Disease', (51, 62)) 61857 31528828 Early age at onset, truncating VHL mutations, and CNS HB as the first presenting tumor were related to a decreased survival in a Chinese cohort of patients with VHL disease. ('VHL', 'Gene', '7428', (31, 34)) ('VHL disease', 'Disease', (161, 172)) ('survival', 'MPA', (115, 123)) ('truncating', 'Var', (20, 30)) ('VHL disease', 'Disease', 'MESH:D006623', (161, 172)) ('tumor', 'Disease', 'MESH:D009369', (81, 86)) ('VHL', 'Gene', (161, 164)) ('patients', 'Species', '9606', (147, 155)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('VHL', 'Gene', '7428', (161, 164)) ('VHL', 'Gene', (31, 34)) ('CNS HB', 'Gene', (50, 56)) ('decreased', 'NegReg', (105, 114)) ('tumor', 'Disease', (81, 86)) ('mutations', 'Var', (35, 44)) 61858 31528828 CNS HBs were associated with nonmissense VHL mutations in our study when compared with missense mutations, as previously reported. ('VHL', 'Gene', '7428', (41, 44)) ('CNS', 'Var', (0, 3)) ('associated', 'Reg', (13, 23)) ('VHL', 'Gene', (41, 44)) 61860 31528828 In conclusion, VHL missense mutations were highly associated with PHEOs, whereas CNS HBs were more often diagnosed in patients with VHL truncating mutations, as previously described. ('VHL', 'Gene', (132, 135)) ('VHL', 'Gene', (15, 18)) ('VHL', 'Gene', '7428', (132, 135)) ('VHL', 'Gene', '7428', (15, 18)) ('missense mutations', 'Var', (19, 37)) ('associated', 'Reg', (50, 60)) ('patients', 'Species', '9606', (118, 126)) ('PHEOs', 'Disease', (66, 71)) 61861 31528828 Interestingly, PNETs were significantly more associated with VHL missense mutations in our cohort. ('VHL', 'Gene', (61, 64)) ('PNETs', 'Disease', (15, 20)) ('missense mutations', 'Var', (65, 83)) ('VHL', 'Gene', '7428', (61, 64)) 61862 31528828 Therefore, patients with VHL missense mutations should be closely monitored for PNET development, particularly those with exon 3 missense mutations who carry a higher risk of malignancy. ('malignancy', 'Disease', (175, 185)) ('VHL', 'Gene', (25, 28)) ('malignancy', 'Disease', 'MESH:D009369', (175, 185)) ('VHL', 'Gene', '7428', (25, 28)) ('patients', 'Species', '9606', (11, 19)) ('missense mutations', 'Var', (29, 47)) 61863 31528828 In addition, our data support that biochemical screening for PHEO should be initiated at birth for patients with VHL disease harboring missense mutations. ('patients', 'Species', '9606', (99, 107)) ('VHL disease', 'Disease', (113, 124)) ('missense mutations', 'Var', (135, 153)) ('VHL disease', 'Disease', 'MESH:D006623', (113, 124)) 61892 31211058 Presence of S100, specifically expressed by sustentacular cells, allows for the ruling in of paragangliomas and pheochromocytomas, although it may be sometimes absent. ('paragangliomas and pheochromocytomas', 'Disease', 'MESH:D010673', (93, 129)) ('S100', 'Gene', '6271', (12, 16)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (112, 129)) ('paragangliomas', 'Phenotype', 'HP:0002668', (93, 107)) ('paraganglioma', 'Phenotype', 'HP:0002668', (93, 106)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (112, 128)) ('S100', 'Gene', (12, 16)) ('Presence', 'Var', (0, 8)) 61932 31019814 The abdominal magnetic resonance imaging revealed a left adrenal tumor with 4.3cm length, hyperintense in T2-weighted images and hypointense in T1, with peripheral contrast enhancement and increased washout, possibly indicating a pheochromocytoma. ('hypointense', 'Var', (129, 140)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (57, 70)) ('enhancement', 'PosReg', (173, 184)) ('left adrenal tumor', 'Disease', (52, 70)) ('washout', 'MPA', (199, 206)) ('left adrenal tumor', 'Disease', 'MESH:D000310', (52, 70)) ('pheochromocytoma', 'Disease', (230, 246)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (230, 246)) ('T2-weighted images', 'MPA', (106, 124)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (230, 246)) ('increased', 'PosReg', (189, 198)) 61934 31019814 At biochemical evaluation, she presented elevation of plasma and urinary normetanephrine [3503 pg/mL (<120) and 5505 ug/24h (50-650) resp.] ('5505 ug/24h', 'Var', (112, 123)) ('urinary normetanephrine', 'Phenotype', 'HP:0003345', (65, 88)) ('elevation', 'PosReg', (41, 50)) ('normetanephrine', 'Chemical', 'MESH:D009647', (73, 88)) 61943 31019814 Histological examination showed a well-delimitated pheochromocytoma with 3.0x2.5x1.8cm and potential malignant biological behavior with PASS score = 11 (Table 2) (potential malignant biological behavior if PASS score >= 6). ('pheochromocytoma', 'Disease', (51, 67)) ('PASS score =', 'Var', (136, 148)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (51, 67)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (51, 67)) 61964 31019814 Germline mutations in genes associated with malignant behavior were absent, lessening the malignancy potential. ('Germline mutations', 'Var', (0, 18)) ('malignancy', 'Disease', (90, 100)) ('malignancy', 'Disease', 'MESH:D009369', (90, 100)) ('lessening', 'NegReg', (76, 85)) 61980 30288966 Commonly recommended treatment options for metastatic PPGLs include surgery for removing the tumor bulk, different combinations of chemotherapy, endoradiotherapy using [131I]metaiodobenzylguanidine, external radiation therapy to areas such as bone where metastases are not accessible for surgery, embolization to block tumor blood supply and sometimes also cryo- or radiofrequency ablation. ('tumor', 'Disease', (319, 324)) ('metastases', 'Disease', 'MESH:D009362', (254, 264)) ('embolization', 'Var', (297, 309)) ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('PPGLs', 'Chemical', '-', (54, 59)) ('tumor', 'Disease', (93, 98)) ('block tumor', 'Disease', (313, 324)) ('tumor', 'Disease', 'MESH:D009369', (319, 324)) ('metastases', 'Disease', (254, 264)) ('block tumor', 'Disease', 'MESH:D006327', (313, 324)) ('tumor', 'Phenotype', 'HP:0002664', (319, 324)) ('tumor', 'Disease', 'MESH:D009369', (93, 98)) 62012 30288966 Tumor-bearing SCID/beige mice (n = 2) and SKH1 mice (n = 2) received 15 MBq of [68Ga]Ga-DOTA-(Tyr3)octreotide (TOC) or [68Ga]Ga-DOTA-(Tyr3)octreotate (TATE) at a molar activity of 25 GBq/micromol, respectively. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('mice', 'Species', '10090', (25, 29)) ('Ga-DOTA-(Tyr3)octreotide', 'Chemical', '-', (85, 109)) ('Ga-DOTA-(Tyr3)octreotate', 'Chemical', '-', (125, 149)) ('[68Ga]Ga-DOTA-', 'Var', (119, 133)) ('[68Ga]Ga-DOTA-', 'Var', (79, 93)) ('SCID', 'Gene', '19090', (14, 18)) ('mice', 'Species', '10090', (47, 51)) ('SCID', 'Gene', (14, 18)) 62032 30288966 Liver metastases in SKH1 mice were detected 19 days after intravenous cell injection and showed a significantly higher exponential growth rate (40%/day) compared to the other metastases models (between 17 and 27%/day). ('mice', 'Species', '10090', (25, 29)) ('higher', 'PosReg', (112, 118)) ('SKH1', 'Var', (20, 24)) ('exponential growth rate', 'CPA', (119, 142)) ('metastases', 'Disease', 'MESH:D009362', (6, 16)) ('Liver metastases', 'Disease', 'MESH:D009362', (0, 16)) ('Liver metastases', 'Disease', (0, 16)) ('metastases', 'Disease', (175, 185)) ('metastases', 'Disease', 'MESH:D009362', (175, 185)) ('metastases', 'Disease', (6, 16)) 62039 30288966 Of note, significant linear relationships with luminescence intensities of tumors were more frequently observed among O-methylated catecholamine metabolites compared to free catecholamines. ('tumors', 'Disease', 'MESH:D009369', (75, 81)) ('O-methylated', 'Var', (118, 130)) ('catecholamine', 'Chemical', 'MESH:D002395', (174, 187)) ('luminescence intensities', 'MPA', (47, 71)) ('catecholamine', 'Chemical', 'MESH:D002395', (131, 144)) ('catecholamines', 'Chemical', 'MESH:D002395', (174, 188)) ('tumors', 'Phenotype', 'HP:0002664', (75, 81)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('tumors', 'Disease', (75, 81)) ('observed', 'Reg', (103, 111)) 62062 30288966 Since combined T and B cell deficiency in SHO mice carrying a homozygous Prkdcscid mutation did not improve the engraftment of circulating MPCLUC/GZ cells, we suspect innate immune responses to be responsible. ('engraftment', 'MPA', (112, 123)) ('B cell deficiency', 'Disease', 'MESH:D016393', (21, 38)) ('B cell deficiency', 'Disease', (21, 38)) ('mutation', 'Var', (83, 91)) ('mice', 'Species', '10090', (46, 50)) ('Prkdcscid', 'Gene', (73, 82)) 62066 30288966 Additional interactions of anti-Asialo GM1 serum with murine monocytes, fetal thymocytes and basophils might have also contributed. ('anti-Asialo', 'Var', (27, 38)) ('GM1', 'Chemical', 'MESH:D005677', (39, 42)) ('interactions', 'Interaction', (11, 23)) ('murine', 'Species', '10090', (54, 60)) 62067 30288966 In SCID/beige mice, impaired NK cell function due to the Lystbg-J mutation in addition to T and B cell deficiency was associated with highly efficient engraftment of circulating MPCLUC/GZ cells and almost immediate tumor formation. ('engraftment', 'CPA', (151, 162)) ('mice', 'Species', '10090', (14, 18)) ('B cell deficiency', 'Disease', 'MESH:D016393', (96, 113)) ('tumor', 'Disease', 'MESH:D009369', (215, 220)) ('B cell deficiency', 'Disease', (96, 113)) ('tumor', 'Phenotype', 'HP:0002664', (215, 220)) ('impaired NK cell', 'Phenotype', 'HP:0012176', (20, 36)) ('impaired NK', 'Disease', (20, 31)) ('Lystbg-J', 'Gene', (57, 65)) ('mutation', 'Var', (66, 74)) ('SCID', 'Gene', '19090', (3, 7)) ('tumor', 'Disease', (215, 220)) ('impaired NK', 'Disease', 'MESH:D009422', (20, 31)) ('SCID', 'Gene', (3, 7)) 62084 30288966 These findings are in agreement with clinical findings of high SSTR2 densities in metastatic human PPGLs, especially in those due to mutations in succinate dehydrogenase subunit 2 (SDHB). ('succinate dehydrogenase subunit 2', 'Gene', (146, 179)) ('human', 'Species', '9606', (93, 98)) ('PPGLs', 'Chemical', '-', (99, 104)) ('due', 'Reg', (126, 129)) ('mutations', 'Var', (133, 142)) ('SDHB', 'Gene', (181, 185)) ('succinate dehydrogenase subunit 2', 'Gene', '6390', (146, 179)) ('densities', 'MPA', (69, 78)) 62107 30094312 Elevation of catecholamine levels was not observed upon endocrinological examination, but 123I-metaiodobenzylguanidine (123I-MIBG) scintigraphy revealed abnormal accumulation of 123I-MIBG, consistent with the site of abnormal FDG accumulation. ('123I-MIBG', 'Chemical', 'MESH:D019797', (120, 129)) ('catecholamine', 'Chemical', 'MESH:D002395', (13, 26)) ('123I-MIBG', 'Var', (178, 187)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (178, 187)) ('accumulation', 'PosReg', (162, 174)) ('123I-metaiodobenzylguanidine', 'Chemical', 'MESH:D019797', (90, 118)) ('Elevation of catecholamine', 'Phenotype', 'HP:0003334', (0, 26)) 62116 30094312 Surgery was performed without any complications, and the pathological tumor diagnosis was T1aN0M0 grade 2 endometrial adenocarcinoma (myometrial invasion was close to 50%) and paraganglioma. ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('paraganglioma', 'Disease', 'MESH:D010235', (176, 189)) ('tumor', 'Disease', (70, 75)) ('T1aN0M0', 'Var', (90, 97)) ('endometrial adenocarcinoma', 'Disease', (106, 132)) ('paraganglioma', 'Phenotype', 'HP:0002668', (176, 189)) ('endometrial adenocarcinoma', 'Phenotype', 'HP:0012114', (106, 132)) ('paraganglioma', 'Disease', (176, 189)) ('endometrial adenocarcinoma', 'Disease', 'MESH:D016889', (106, 132)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) 62141 29909963 Comprehensive Cancer-Predisposition Gene Testing in an Adult Multiple Primary Tumor Series Shows a Broad Range of Deleterious Variants and Atypical Tumor Phenotypes Multiple primary tumors (MPTs) affect a substantial proportion of cancer survivors and can result from various causes, including inherited predisposition. ('Multiple primary tumors', 'Disease', 'MESH:D009378', (165, 188)) ('tumors', 'Phenotype', 'HP:0002664', (182, 188)) ('Variants', 'Var', (126, 134)) ('cancer', 'Disease', 'MESH:D009369', (231, 237)) ('Multiple primary tumors', 'Disease', (165, 188)) ('P', 'Chemical', 'MESH:D010758', (154, 155)) ('cancer', 'Disease', (231, 237)) ('P', 'Chemical', 'MESH:D010758', (21, 22)) ('Tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('P', 'Chemical', 'MESH:D010758', (70, 71)) ('Cancer', 'Phenotype', 'HP:0002664', (14, 20)) ('cancer', 'Phenotype', 'HP:0002664', (231, 237)) ('affect', 'Reg', (196, 202)) ('Tumor', 'Phenotype', 'HP:0002664', (78, 83)) ('P', 'Chemical', 'MESH:D010758', (191, 192)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) ('result', 'Reg', (256, 262)) 62142 29909963 Currently, germline genetic testing of MPT-affected individuals for variants in cancer-predisposition genes (CPGs) is mostly targeted by tumor type. ('variants', 'Var', (68, 76)) ('P', 'Chemical', 'MESH:D010758', (40, 41)) ('tumor', 'Disease', (137, 142)) ('cancer', 'Phenotype', 'HP:0002664', (80, 86)) ('P', 'Chemical', 'MESH:D010758', (110, 111)) ('tumor', 'Disease', 'MESH:D009369', (137, 142)) ('cancer', 'Disease', 'MESH:D009369', (80, 86)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) ('cancer', 'Disease', (80, 86)) 62144 29909963 Despite previous negative genetic assessment and molecular investigations, pathogenic variants in moderate- and high-risk CPGs were detected in 67/440 (15.2%) probands. ('P', 'Chemical', 'MESH:D010758', (123, 124)) ('CPGs', 'Disease', (122, 126)) ('variants', 'Var', (86, 94)) 62145 29909963 In most individuals with a germline variant assessed as pathogenic or likely pathogenic (P/LP), at least one of their tumor types was characteristic of variants in the relevant CPG. ('P', 'Chemical', 'MESH:D010758', (92, 93)) ('tumor', 'Disease', 'MESH:D009369', (118, 123)) ('P', 'Chemical', 'MESH:D010758', (89, 90)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('P', 'Chemical', 'MESH:D010758', (178, 179)) ('tumor', 'Disease', (118, 123)) ('variants', 'Var', (152, 160)) ('LP', 'Chemical', 'MESH:D008070', (91, 93)) 62146 29909963 However, in 29 probands (42.2% of those with a P/LP variant), the tumor phenotype appeared discordant. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('tumor', 'Disease', (66, 71)) ('P', 'Chemical', 'MESH:D010758', (47, 48)) ('P/LP', 'Var', (47, 51)) ('LP', 'Chemical', 'MESH:D008070', (49, 51)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) ('P', 'Chemical', 'MESH:D010758', (50, 51)) 62147 29909963 The frequency of individuals with truncating or splice-site CPG variants and at least one discordant tumor type was significantly higher than in a control population (chi2 = 43.642; p <= 0.0001). ('higher', 'PosReg', (130, 136)) ('CPG', 'Gene', (60, 63)) ('tumor', 'Disease', (101, 106)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('truncating', 'MPA', (34, 44)) ('variants', 'Var', (64, 72)) ('tumor', 'Disease', 'MESH:D009369', (101, 106)) ('P', 'Chemical', 'MESH:D010758', (61, 62)) 62148 29909963 2/67 (3%) probands with P/LP variants had evidence of multiple inherited neoplasia allele syndrome (MINAS) with deleterious variants in two CPGs. ('neoplasia', 'Phenotype', 'HP:0002664', (73, 82)) ('P', 'Chemical', 'MESH:D010758', (24, 25)) ('multiple inherited neoplasia allele syndrome', 'Disease', (54, 98)) ('P', 'Chemical', 'MESH:D010758', (27, 28)) ('variants', 'Var', (29, 37)) ('multiple inherited neoplasia allele syndrome', 'Disease', 'MESH:D030342', (54, 98)) ('LP', 'Chemical', 'MESH:D008070', (26, 28)) ('P', 'Chemical', 'MESH:D010758', (141, 142)) 62149 29909963 Together with variant detection rates from a previous series of similarly ascertained MPT-affected individuals, the present results suggest that first-line comprehensive CPG analysis in an MPT cohort referred to clinical genetics services would detect a deleterious variant in about a third of individuals. ('P', 'Chemical', 'MESH:D010758', (171, 172)) ('variant', 'Var', (266, 273)) ('P', 'Chemical', 'MESH:D010758', (87, 88)) ('detect', 'Reg', (245, 251)) ('P', 'Chemical', 'MESH:D010758', (190, 191)) 62153 29909963 To date, the major factors prompting investigation for germline CPG variants have been family history and features of specific familial cancer syndromes. ('variants', 'Var', (68, 76)) ('CPG', 'Gene', (64, 67)) ('familial cancer syndromes', 'Disease', 'MESH:D009386', (127, 152)) ('P', 'Chemical', 'MESH:D010758', (65, 66)) ('familial cancer syndromes', 'Disease', (127, 152)) ('cancer', 'Phenotype', 'HP:0002664', (136, 142)) 62170 29909963 Variants were extracted from VCF files if they were within a gene specified in a comprehensive list of 83 CPGs (Table 1) and had a predicted Sequence Ontology (SO) consequence indicating a deleterious effect on protein function. ('Variants', 'Var', (0, 8)) ('protein function', 'MPA', (211, 227)) ('effect', 'Reg', (201, 207)) ('P', 'Chemical', 'MESH:D010758', (107, 108)) 62174 29909963 Genes were included if deleterious variants affecting them were associated with adult-onset tumors and if neoplastic lesions were likely to be a primary presenting feature. ('associated', 'Reg', (64, 74)) ('variants', 'Var', (35, 43)) ('neoplastic lesions', 'Disease', (106, 124)) ('neoplastic lesions', 'Disease', 'MESH:D051437', (106, 124)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('tumors', 'Disease', (92, 98)) ('tumors', 'Phenotype', 'HP:0002664', (92, 98)) ('neoplastic lesions', 'Phenotype', 'HP:0002664', (106, 124)) ('tumors', 'Disease', 'MESH:D009369', (92, 98)) 62178 29909963 Third, variants were retained for further review if the predicted consequence was among a list of SO terms indicating protein truncation, if there was evidence of pathogenicity in ClinVar (at least two-star evidence of pathogenic or likely pathogenic [P/LP] effect corresponding to multiple submissions with no conflicts as to the assertion of clinical significance), or if the variant was assigned a disease mutation (DM) status in the Human Gene Mutation Database (HGMD). ('LP', 'Chemical', 'MESH:D008070', (254, 256)) ('disease mutation', 'Disease', (401, 417)) ('Human', 'Species', '9606', (437, 442)) ('P', 'Chemical', 'MESH:D010758', (255, 256)) ('DM', 'Disease', 'MESH:D009223', (419, 421)) ('variant', 'Var', (378, 385)) ('P', 'Chemical', 'MESH:D010758', (252, 253)) 62181 29909963 Retained variants were subsequently excluded if their putative pathogenicity could be refuted by one of the following criteria: (1) a predicted protein-truncating variant for which there was at least two-star evidence of a benign or uncertain effect in ClinVar; (2) a predicted protein-truncating variant in a proto-oncogene in a list compiled on the basis of a literature review (constitutional cancer-predisposing variants in proto-oncogenes are associated with gain-of-function variants, so truncation of the protein product is unlikely to increase tumor risk), (3) a predicted protein-truncating variant affecting <5% of the canonical transcript (according to the LOFTEE VEP plugin), (4) a variant affecting a gene associated with only recessive tumor predisposition (as defined by a literature review) unless an individual appeared to harbor two filtered variants in the same gene, and (5) a variant with HGMD DM status or that exceeded the CADD score threshold and had at least two-star evidence of a benign or uncertain clinical effect or one-star evidence if there were multiple submissions without a P/LP assertion. ('cancer', 'Disease', 'MESH:D009369', (396, 402)) ('tumor', 'Disease', (750, 755)) ('tumor', 'Disease', 'MESH:D009369', (552, 557)) ('HGMD DM', 'Disease', (910, 917)) ('tumor', 'Disease', 'MESH:D009369', (750, 755)) ('P', 'Chemical', 'MESH:D010758', (677, 678)) ('tumor', 'Phenotype', 'HP:0002664', (552, 557)) ('recessive tumor', 'Disease', 'MESH:D009369', (740, 755)) ('variant', 'Var', (897, 904)) ('tumor', 'Phenotype', 'HP:0002664', (750, 755)) ('cancer', 'Disease', (396, 402)) ('recessive tumor', 'Disease', (740, 755)) ('P', 'Chemical', 'MESH:D010758', (1112, 1113)) ('cancer', 'Phenotype', 'HP:0002664', (396, 402)) ('HGMD DM', 'Disease', 'MESH:D009223', (910, 917)) ('P', 'Chemical', 'MESH:D010758', (1109, 1110)) ('LP', 'Chemical', 'MESH:D008070', (1111, 1113)) ('variant', 'Var', (694, 701)) ('tumor', 'Disease', (552, 557)) 62183 29909963 Additionally, for each variant, it was noted whether the corresponding individual had previously been diagnosed with a tumor typically associated with pathogenic variants in that gene (according to Rahman, the Familial Cancer Database, or the original paper reporting the gene as a CPG). ('Familial Cancer', 'Disease', 'MESH:D009369', (210, 225)) ('tumor', 'Disease', (119, 124)) ('Cancer', 'Phenotype', 'HP:0002664', (219, 225)) ('variants', 'Var', (162, 170)) ('associated', 'Reg', (135, 145)) ('tumor', 'Disease', 'MESH:D009369', (119, 124)) ('Familial Cancer', 'Disease', (210, 225)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('P', 'Chemical', 'MESH:D010758', (283, 284)) 62186 29909963 Structural variant (SV) calls that were predicted to affect a gene on the gene list (n = 83) were filtered and assessed according to the quality of the call, rarity of the variant, and biological plausibility of tumor predisposition caused by the variant (Figure S2). ('tumor', 'Disease', 'MESH:D009369', (212, 217)) ('variant', 'Var', (247, 254)) ('tumor', 'Disease', (212, 217)) ('tumor', 'Phenotype', 'HP:0002664', (212, 217)) 62188 29909963 Remaining variants were regarded as potentially pathogenic if they affected a gene associated with tumor predisposition in the heterozygous state (unless there was evidence of homozygosity or compound heterozygosity) and fell into one of the following categories: (1) copy-number loss of coding regions of a tumor-suppressor gene, (2) copy-number gain of coding regions of a proto-oncogene, and (3) any SV type with a predicted breakpoint disrupting the gene. ('tumor', 'Disease', (99, 104)) ('affected', 'Reg', (67, 75)) ('variants', 'Var', (10, 18)) ('disrupting', 'NegReg', (439, 449)) ('loss', 'NegReg', (280, 284)) ('gain', 'PosReg', (347, 351)) ('tumor', 'Disease', 'MESH:D009369', (308, 313)) ('copy-number', 'Var', (268, 279)) ('tumor', 'Disease', 'MESH:D009369', (99, 104)) ('SV type', 'Disease', 'MESH:D017827', (403, 410)) ('tumor', 'Phenotype', 'HP:0002664', (308, 313)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('tumor', 'Disease', (308, 313)) ('copy-number', 'Var', (335, 346)) ('SV type', 'Disease', (403, 410)) 62190 29909963 The occurrence of tumors associated with disruption of particular genes in individuals harboring suspected SVs was noted in the same manner as for single-nucleotide variants (SNVs) and indels. ('tumors', 'Disease', 'MESH:D009369', (18, 24)) ('disruption', 'Var', (41, 51)) ('tumors', 'Disease', (18, 24)) ('single-nucleotide variants', 'Var', (147, 173)) ('genes', 'Gene', (66, 71)) ('tumors', 'Phenotype', 'HP:0002664', (18, 24)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 62191 29909963 Inversions, translocations, and tandem duplications were confirmed by sequencing across breakpoints, whereas deletions were confirmed by fragment size resulting from long-range PCR if sequencing across the breakpoint was not possible. ('P', 'Chemical', 'MESH:D010758', (177, 178)) ('tandem duplications', 'Var', (32, 51)) ('translocations', 'Var', (12, 26)) 62195 29909963 Only truncating or splice-site variants were considered for comparison purposes because these are less likely to be false positives and made up 52/63 (82.5%) (see Results) of the P/LP variants in our cohort. ('P/LP variants', 'Var', (179, 192)) ('P', 'Chemical', 'MESH:D010758', (182, 183)) ('P', 'Chemical', 'MESH:D010758', (179, 180)) ('LP', 'Chemical', 'MESH:D008070', (181, 183)) ('variants', 'Var', (184, 192)) ('made', 'Reg', (136, 140)) 62214 29909963 Six occurrences of P/LP variants occurred in two members of the same family, and only three of these contributed to the detection rates quoted below. ('variants', 'Var', (24, 32)) ('LP', 'Chemical', 'MESH:D008070', (21, 23)) ('occurred', 'Reg', (33, 41)) ('P', 'Chemical', 'MESH:D010758', (19, 20)) ('P/LP', 'Gene', (19, 23)) ('P', 'Chemical', 'MESH:D010758', (22, 23)) 62215 29909963 Overall, 63 variants in 17 genes in 61 (13.9%) probands were assessed as P/LP (summary in Table 3; full description with phenotype and previous testing in Table S6). ('LP', 'Chemical', 'MESH:D008070', (75, 77)) ('variants', 'Var', (12, 20)) ('P', 'Chemical', 'MESH:D010758', (76, 77)) ('P/LP', 'Disease', (73, 77)) ('P', 'Chemical', 'MESH:D010758', (73, 74)) ('assessed', 'Reg', (61, 69)) 62216 29909963 Individuals with variants in moderate-risk CPGs CHEK2 (MIM: 604373; n = 14) and ATM (MIM: 607585; n = 10) were the most frequent; one homozygote was detected for CHEK2: c.1100delC (p.Thr367Metfs) (Ensembl: ENST00000328354; GenBank: NM_007194.3]; annotated in our data as c.1229delC [p.Thr410fs] [Ensembl: ENST00000382580; GenBank: NM_001005735.1]). ('CHEK2', 'Gene', '11200', (48, 53)) ('p.Thr367Met', 'Var', (181, 192)) ('variants', 'Var', (17, 25)) ('ATM', 'Gene', (80, 83)) ('c.1100delC', 'Mutation', 'rs555607708', (169, 179)) ('CHEK2', 'Gene', '11200', (162, 167)) ('CHEK2', 'Gene', (48, 53)) ('P', 'Chemical', 'MESH:D010758', (44, 45)) ('p.Thr367Met', 'SUBSTITUTION', 'None', (181, 192)) ('c.1229delC', 'Mutation', 'rs555607708', (271, 281)) ('CHEK2', 'Gene', (162, 167)) ('ATM', 'Gene', '472', (80, 83)) ('c.1229delC [p.Thr410fs]', 'Var', (271, 294)) ('p.Thr410fs', 'Mutation', 'rs555607708', (283, 293)) 62217 29909963 Individuals with variants in BRCA2 (MIM: 600185; n = 6), PALB2 (MIM: 610355; n = 6), FH (MIM: 136850; n = 5), NF1 (MIM: 613113; n = 4), NTHL1 (MIM: 602656; homozygous, n = 3), MAX (MIM: 154950; n = 2), PTEN (MIM: 601728; n = 2), SDHB (MIM: 185470; n = 2), BMPR1A (MIM: 601299; n = 1), BRCA1 (MIM: 113705; n = 1), CDKN1B (MIM: 600778; n = 1), EXT2 (MIM: 608210; n = 1), MLH1 (MIM: 120436; n = 1), MSH2 (MIM: 609309; n = 1), and PMS2 (MIM: 600259; n = 1) were also noted. ('SDHB', 'Gene', '6390', (229, 233)) ('NF1', 'Gene', '4763', (110, 113)) ('EXT2', 'Gene', (342, 346)) ('NTHL1', 'Gene', (136, 141)) ('PALB2', 'Gene', '79728', (57, 62)) ('EXT2', 'Gene', '2132', (342, 346)) ('MSH2', 'Gene', (396, 400)) ('PTEN', 'Gene', (202, 206)) ('PMS2', 'Gene', (427, 431)) ('NF1', 'Gene', (110, 113)) ('variants', 'Var', (17, 25)) ('NTHL1', 'Gene', '4913', (136, 141)) ('SDHB', 'Gene', (229, 233)) ('CDKN1B', 'Gene', (313, 319)) ('MSH2', 'Gene', '4436', (396, 400)) ('PTEN', 'Gene', '5728', (202, 206)) ('MLH1', 'Gene', (369, 373)) ('BMPR1A', 'Gene', '657', (256, 262)) ('BRCA2', 'Gene', (29, 34)) ('MLH1', 'Gene', '4292', (369, 373)) ('PMS2', 'Gene', '5395', (427, 431)) ('CDKN1B', 'Gene', '1027', (313, 319)) ('BRCA1', 'Gene', '672', (285, 290)) ('PALB2', 'Gene', (57, 62)) ('BRCA1', 'Gene', (285, 290)) ('BMPR1A', 'Gene', (256, 262)) ('BRCA2', 'Gene', '675', (29, 34)) 62219 29909963 Pre-testing information was available for 57/63 P/LP variants, 41/57 (71.9%) of which occurred in an individual who had at least one previous genetic test and 7/57 (12.3%) of which were eventually detected by clinical services. ('P', 'Chemical', 'MESH:D010758', (0, 1)) ('occurred', 'Reg', (86, 94)) ('P/LP', 'Gene', (48, 52)) ('P', 'Chemical', 'MESH:D010758', (48, 49)) ('P', 'Chemical', 'MESH:D010758', (51, 52)) ('variants', 'Var', (53, 61)) ('LP', 'Chemical', 'MESH:D008070', (50, 52)) 62222 29909963 Of the 61 probands identified with a P/LP variant, 36 (59%; 8.2% of all probands) had previously been diagnosed with a tumor typically associated with the relevant CPG. ('P', 'Chemical', 'MESH:D010758', (165, 166)) ('tumor', 'Disease', (119, 124)) ('P', 'Chemical', 'MESH:D010758', (40, 41)) ('P/LP', 'Var', (37, 41)) ('tumor', 'Disease', 'MESH:D009369', (119, 124)) ('LP', 'Chemical', 'MESH:D008070', (39, 41)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('P', 'Chemical', 'MESH:D010758', (37, 38)) 62224 29909963 Two probands harbored two P/LP variants in multiple CPGs. ('P', 'Chemical', 'MESH:D010758', (26, 27)) ('variants', 'Var', (31, 39)) ('LP', 'Chemical', 'MESH:D008070', (28, 30)) ('P', 'Chemical', 'MESH:D010758', (29, 30)) ('P', 'Chemical', 'MESH:D010758', (53, 54)) ('P/LP variants', 'Var', (26, 39)) 62225 29909963 One individual with colorectal adenocarcinoma at age 50 years and breast cancer at 57 years carried a PMS2 frameshift variant (c.741-742insTGAAG [p.Pro247_Ser248fs] [Ensembl: ENST00000265849; GenBank: NM_000535.6]) and a BMPR1A nonsense variant (c.730C>T [p.Arg244*] [Ensembl: ENST00000372037; GenBank: NM_004329.2]). ('PMS2', 'Gene', (102, 106)) ('BMPR1A', 'Gene', '657', (221, 227)) ('colorectal adenocarcinoma', 'Disease', (20, 45)) ('PMS2', 'Gene', '5395', (102, 106)) ('c.741-742insTGAAG', 'Var', (127, 144)) ('cancer', 'Phenotype', 'HP:0002664', (73, 79)) ('colorectal adenocarcinoma', 'Disease', 'MESH:D015179', (20, 45)) ('BMPR1A', 'Gene', (221, 227)) ('breast cancer', 'Disease', 'MESH:D001943', (66, 79)) ('carcinoma', 'Phenotype', 'HP:0030731', (36, 45)) ('c.741-742insTGAAG', 'Mutation', 'c.741_742insTGAAG', (127, 144)) ('breast cancer', 'Disease', (66, 79)) ('breast cancer', 'Phenotype', 'HP:0003002', (66, 79)) ('c.730C>T', 'Mutation', 'rs766462610', (246, 254)) ('p.Arg244*', 'Mutation', 'rs766462610', (256, 265)) ('p.Pro247_Ser248fs', 'Mutation', 'p.P,S247,248fsX', (146, 163)) ('c.730C>T [p.Arg244*] [', 'Var', (246, 268)) 62226 29909963 Immunohistochemistry of the bowel tumor showed loss of PMS2; MSI was also demonstrated, leading to diagnostic sequencing of PMS2, although there was no family history of neoplasia other than an ovarian cancer in a second-degree relative after age 70 years. ('neoplasia', 'Disease', (170, 179)) ('MSI', 'Disease', 'None', (61, 64)) ('cancer', 'Phenotype', 'HP:0002664', (202, 208)) ('ovarian cancer', 'Disease', (194, 208)) ('sequencing', 'Var', (110, 120)) ('PMS2', 'Gene', (55, 59)) ('MSI', 'Disease', (61, 64)) ('neoplasia', 'Phenotype', 'HP:0002664', (170, 179)) ('PMS2', 'Gene', (124, 128)) ('bowel tumor', 'Disease', (28, 39)) ('bowel tumor', 'Disease', 'MESH:D015212', (28, 39)) ('loss', 'NegReg', (47, 51)) ('neoplasia', 'Disease', 'MESH:D009369', (170, 179)) ('PMS2', 'Gene', '5395', (124, 128)) ('PMS2', 'Gene', '5395', (55, 59)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (194, 208)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('ovarian cancer', 'Disease', 'MESH:D010051', (194, 208)) 62228 29909963 Additionally, an individual with bilateral pheochromocytoma at ages 16 and 35 years and no reported family history of neoplasia was identified with variants in FH (c.521C>G [p.Pro174Arg] [Ensembl: ENST00000366560; GenBank: NM_000143.3]) and MAX (c.1A>G [p.Met1Val] [Ensembl: ENST00000358664; GenBank: NM_002382.4]). ('c.1A>G [', 'Var', (246, 254)) ('neoplasia', 'Disease', (118, 127)) ('c.521C>G [p.Pro174Arg] [', 'Var', (164, 188)) ('c.1A>G', 'Mutation', 'rs587778967', (246, 252)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (43, 59)) ('variants', 'Var', (148, 156)) ('neoplasia', 'Disease', 'MESH:D009369', (118, 127)) ('neoplasia', 'Phenotype', 'HP:0002664', (118, 127)) ('p.Pro174Arg', 'Mutation', 'rs587778720', (174, 185)) ('bilateral pheochromocytoma', 'Disease', 'MESH:D010673', (33, 59)) ('c.521C>G', 'Mutation', 'rs552816150', (164, 172)) ('p.Met1Val', 'Mutation', 'rs587778967', (254, 263)) ('bilateral pheochromocytoma', 'Disease', (33, 59)) 62229 29909963 The latter variant is predicted to abolish the MAX initiation codon, and previous analysis of tumor tissue from an individual carrying it demonstrated loss of the wild-type allele and a lack of full-length MAX protein product. ('tumor', 'Disease', 'MESH:D009369', (94, 99)) ('MAX initiation codon', 'MPA', (47, 67)) ('abolish', 'NegReg', (35, 42)) ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('tumor', 'Disease', (94, 99)) ('lack', 'NegReg', (186, 190)) ('loss', 'NegReg', (151, 155)) ('variant', 'Var', (11, 18)) 62234 29909963 Five undetected variants:including one P/LP PMS2 variant (c.741-742insTGAAG [p.Pro247_Ser248fs] [Ensembl: ENST00000265849; GenBank: NM_000535.6]), where 58/202 (20.6%) reads contained the insertion:were indels for which IGV review showed a VAF below the threshold for filtering. ('P', 'Chemical', 'MESH:D010758', (39, 40)) ('PMS2', 'Gene', '5395', (44, 48)) ('P', 'Chemical', 'MESH:D010758', (44, 45)) ('P', 'Chemical', 'MESH:D010758', (79, 80)) ('LP', 'Chemical', 'MESH:D008070', (41, 43)) ('p.Pro247_Ser248fs', 'Mutation', 'p.P,S247,248fsX', (77, 94)) ('P', 'Chemical', 'MESH:D010758', (42, 43)) ('c.741-742insTGAAG', 'Var', (58, 75)) ('c.741-742insTGAAG', 'Mutation', 'c.741_742insTGAAG', (58, 75)) ('PMS2', 'Gene', (44, 48)) 62235 29909963 One undetected variant in TMEM127 (MIM: 613403) (c.665C>T [p.Ala222Val] [Ensembl: ENST00000258439; GenBank: NM_017849.3]) was covered by only two reads. ('TMEM127', 'Gene', (26, 33)) ('c.665C>T', 'Mutation', 'rs373951977', (49, 57)) ('p.Ala222Val', 'Mutation', 'rs373951977', (59, 70)) ('TMEM127', 'Gene', '55654', (26, 33)) ('c.665C>T [', 'Var', (49, 59)) 62238 29909963 This was because the VAF was marginally below the filtering threshold of 33% for ATM (c.2426C>A [p.Ser809*] [Ensembl: ENST00000278616; GenBank: NM_000051]) (7/22 [32%] reads) and MAX (c.97C>T [p.Arg33*] [Ensembl: ENST00000358664; GenBank: NM_002382]) (9/29 [31%] reads). ('c.2426C>A [p.Ser809*] [', 'Var', (86, 109)) ('c.2426C>A', 'Mutation', 'rs730881348', (86, 95)) ('p.Ser809*', 'Mutation', 'rs730881348', (97, 106)) ('c.97C', 'Var', (184, 189)) ('ATM', 'Gene', (81, 84)) ('p.Arg33*', 'Var', (193, 201)) ('p.Arg33*', 'SUBSTITUTION', 'None', (193, 201)) ('ATM', 'Gene', '472', (81, 84)) ('c.97C>T', 'Mutation', 'rs1057522542', (184, 191)) 62239 29909963 In our dataset, 52 truncating or splice-site variants were observed in 440 MPT probands, whereas 298 were observed in 8,992 gnomAD genomes; the latter is based on observed variant frequency estimates adjusted to reflect sex distribution of the MPT series (13.6% for the MPT dataset versus 3.3% for the gnomAD dataset; chi2 = 84.903, p = < 0.0001). ('variants', 'Var', (45, 53)) ('truncating', 'MPA', (19, 29)) ('P', 'Chemical', 'MESH:D010758', (271, 272)) ('P', 'Chemical', 'MESH:D010758', (76, 77)) ('P', 'Chemical', 'MESH:D010758', (245, 246)) 62240 29909963 41 truncating or splice-site CPG variants occurred in a proband with at least one tumor type uncharacteristic of the relevant CPG, and the frequency of such variants in these individuals was also compared with that in gnomAD. ('occurred', 'Reg', (42, 50)) ('P', 'Chemical', 'MESH:D010758', (30, 31)) ('CPG', 'Gene', (29, 32)) ('P', 'Chemical', 'MESH:D010758', (127, 128)) ('tumor', 'Disease', 'MESH:D009369', (82, 87)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('tumor', 'Disease', (82, 87)) ('variants', 'Var', (33, 41)) 62242 29909963 SV analysis revealed six potentially pathogenic variants in 440 (1.4%) probands (Table 4), two of whom had previously been diagnosed with tumors typically associated with variants in the relevant gene. ('pathogenic', 'Reg', (37, 47)) ('associated', 'Reg', (155, 165)) ('variants', 'Var', (48, 56)) ('tumor', 'Phenotype', 'HP:0002664', (138, 143)) ('tumors', 'Disease', (138, 144)) ('tumors', 'Disease', 'MESH:D009369', (138, 144)) ('tumors', 'Phenotype', 'HP:0002664', (138, 144)) ('variants', 'Var', (171, 179)) 62243 29909963 An additional two had no associated tumor but a family history of such tumors in a first-degree relative (colorectal cancer at age 56 years for the individual with a SMAD4 translocation and renal cell carcinoma at age 69 for the individual with the TSC1 duplication). ('colorectal cancer', 'Disease', (106, 123)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('tumors', 'Disease', (71, 77)) ('tumor', 'Disease', (36, 41)) ('translocation', 'Var', (172, 185)) ('TSC1', 'Gene', (249, 253)) ('SMAD4', 'Gene', '4089', (166, 171)) ('tumor', 'Disease', 'MESH:D009369', (36, 41)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (190, 210)) ('tumors', 'Disease', 'MESH:D009369', (71, 77)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (106, 123)) ('TSC1', 'Gene', '7248', (249, 253)) ('cancer', 'Phenotype', 'HP:0002664', (117, 123)) ('tumor', 'Phenotype', 'HP:0002664', (36, 41)) ('tumor', 'Disease', (71, 76)) ('carcinoma', 'Phenotype', 'HP:0030731', (201, 210)) ('renal cell carcinoma', 'Disease', (190, 210)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (190, 210)) ('tumor', 'Disease', 'MESH:D009369', (71, 76)) ('colorectal cancer', 'Disease', 'MESH:D015179', (106, 123)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('SMAD4', 'Gene', (166, 171)) 62244 29909963 One individual with an inversion of PTEN exon 7 had been diagnosed with breast cancer at age 45 years and had a strong family history of this tumor, which had occurred in her sister (age 57 years), mother (age 57 years), and maternal cousin (age 49 years). ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('cancer', 'Phenotype', 'HP:0002664', (79, 85)) ('tumor', 'Disease', (142, 147)) ('PTEN', 'Gene', (36, 40)) ('PTEN', 'Gene', '5728', (36, 40)) ('breast cancer', 'Disease', 'MESH:D001943', (72, 85)) ('breast cancer', 'Disease', (72, 85)) ('breast cancer', 'Phenotype', 'HP:0003002', (72, 85)) ('tumor', 'Disease', 'MESH:D009369', (142, 147)) ('inversion', 'Var', (23, 32)) 62247 29909963 After combining SVs passing our filters and ACMG-assessed P/LP SNVs and indels, we observed a P/LP variant in 67 (15.2%) probands tested. ('LP', 'Chemical', 'MESH:D008070', (60, 62)) ('LP', 'Chemical', 'MESH:D008070', (96, 98)) ('P/LP variant', 'Var', (94, 106)) ('P', 'Chemical', 'MESH:D010758', (58, 59)) ('variant', 'Var', (99, 106)) ('P', 'Chemical', 'MESH:D010758', (97, 98)) ('P', 'Chemical', 'MESH:D010758', (94, 95)) ('P', 'Chemical', 'MESH:D010758', (61, 62)) 62248 29909963 38 probands (8.6% of total) had such a variant and a typically associated tumor. ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('tumor', 'Disease', (74, 79)) ('tumor', 'Disease', 'MESH:D009369', (74, 79)) ('variant', 'Var', (39, 46)) 62251 29909963 Of the 69 P/LP variants (including SVs) of interest detected in probands, the relevant locus was sequenced in a family member on seven occasions. ('P/LP variants', 'Var', (10, 23)) ('P', 'Chemical', 'MESH:D010758', (10, 11)) ('P', 'Chemical', 'MESH:D010758', (13, 14)) ('variants', 'Var', (15, 23)) ('LP', 'Chemical', 'MESH:D008070', (12, 14)) 62252 29909963 The relevant variant was detected in four of seven family members, two of whom had been diagnosed with a typically associated tumor (breast cancer in PALB2 and BRCA1 variants). ('BRCA1', 'Gene', (160, 165)) ('breast cancer', 'Disease', (133, 146)) ('breast cancer', 'Phenotype', 'HP:0003002', (133, 146)) ('PALB2', 'Gene', '79728', (150, 155)) ('PALB2', 'Gene', (150, 155)) ('tumor', 'Disease', 'MESH:D009369', (126, 131)) ('variants', 'Var', (166, 174)) ('BRCA1', 'Gene', '672', (160, 165)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('cancer', 'Phenotype', 'HP:0002664', (140, 146)) ('breast cancer', 'Disease', 'MESH:D001943', (133, 146)) ('tumor', 'Disease', (126, 131)) 62255 29909963 Thus, we analyzed 460 MPT-affected individuals who had previously undergone routine genetic assessment and/or molecular testing (but without a molecular diagnosis) by using WGS for variants in 83 CPGs and identified a P/LP variant in 67/440 (15.2%) probands (incorporating SNVs, indels, and SVs), including those affected by moderate- and high-risk CPGs. ('P', 'Chemical', 'MESH:D010758', (23, 24)) ('P', 'Chemical', 'MESH:D010758', (350, 351)) ('variants', 'Var', (181, 189)) ('LP', 'Chemical', 'MESH:D008070', (220, 222)) ('P/LP variant', 'Var', (218, 230)) ('P', 'Chemical', 'MESH:D010758', (221, 222)) ('P', 'Chemical', 'MESH:D010758', (218, 219)) ('variant', 'Var', (223, 230)) ('P', 'Chemical', 'MESH:D010758', (197, 198)) 62256 29909963 Because the MPT cohort reported here was mostly ascertained from UK genetics centers (and was similar to the previous retrospective cohort that did not have a known genetic cause), we estimate (by assuming that WGS would detect variants identified by routine targeted sequencing approaches) that comprehensive genetic analysis in a genetics-center-referred series of individuals with MPTs (and no prior genetic testing) would detect a P/LP variant in around a third of individuals (20.7% + 12.1% [estimated under the assumption of a diagnostic yield of 15.2% in the 79.3% of individuals without a variant in routine testing] = 32.8%). ('P', 'Chemical', 'MESH:D010758', (435, 436)) ('detect', 'Reg', (426, 432)) ('P', 'Chemical', 'MESH:D010758', (13, 14)) ('P/LP variant', 'Var', (435, 447)) ('P', 'Chemical', 'MESH:D010758', (385, 386)) ('LP', 'Chemical', 'MESH:D008070', (437, 439)) ('P', 'Chemical', 'MESH:D010758', (438, 439)) ('variant', 'Var', (440, 447)) 62257 29909963 The estimated proportion of individuals with a P/LP variant and a typical tumor would be ~27.5% (20.7% [all of those with variants detected by targeted analysis had a typical tumor] + [79.3% x 8.6% = 6.8%]). ('tumor', 'Disease', (175, 180)) ('tumor', 'Disease', 'MESH:D009369', (74, 79)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('LP', 'Chemical', 'MESH:D008070', (49, 51)) ('P/LP variant', 'Var', (47, 59)) ('tumor', 'Disease', (74, 79)) ('tumor', 'Disease', 'MESH:D009369', (175, 180)) ('P', 'Chemical', 'MESH:D010758', (47, 48)) ('tumor', 'Phenotype', 'HP:0002664', (175, 180)) ('P', 'Chemical', 'MESH:D010758', (50, 51)) 62259 29909963 The estimates for diagnostic yield are approximate and would be influenced by ascertainment processes but do suggest that a comprehensive testing for CPG variants significantly increases the detection of P/LP variants over the targeted testing that has been routinely employed in most genetics centers. ('variants', 'Var', (209, 217)) ('variants', 'Var', (154, 162)) ('P', 'Chemical', 'MESH:D010758', (204, 205)) ('P', 'Chemical', 'MESH:D010758', (207, 208)) ('LP', 'Chemical', 'MESH:D008070', (206, 208)) ('CPG', 'Gene', (150, 153)) ('P', 'Chemical', 'MESH:D010758', (151, 152)) ('increases', 'PosReg', (177, 186)) ('P/LP', 'Gene', (204, 208)) ('detection', 'MPA', (191, 200)) 62260 29909963 Most MPT-affected individuals (38/67 [56.7%] and 38/440 [8.6%] of all pre-assessed probands tested in the current study) with a P/LP variant had been diagnosed with a tumor type characteristically associated with variants in the relevant CPG, findings that have the greatest clinical utility. ('MPT-affected', 'Disease', (5, 17)) ('P/LP variant', 'Var', (128, 140)) ('variants', 'Var', (213, 221)) ('P', 'Chemical', 'MESH:D010758', (239, 240)) ('P', 'Chemical', 'MESH:D010758', (6, 7)) ('tumor', 'Disease', 'MESH:D009369', (167, 172)) ('P', 'Chemical', 'MESH:D010758', (131, 132)) ('variant', 'Var', (133, 140)) ('tumor', 'Phenotype', 'HP:0002664', (167, 172)) ('P', 'Chemical', 'MESH:D010758', (128, 129)) ('LP', 'Chemical', 'MESH:D008070', (130, 132)) ('tumor', 'Disease', (167, 172)) 62267 29909963 Some combination types making up >1% of MPT combinations, e.g., breast-thyroid (3.6% in MPT data), are not observed frequently (<1%) in the population-based cohort used here, which could be accounted for by referral prompted by suspicion of germline PTEN variants. ('P', 'Chemical', 'MESH:D010758', (89, 90)) ('variants', 'Var', (255, 263)) ('breast-thyroid', 'Disease', 'MESH:D013959', (64, 78)) ('P', 'Chemical', 'MESH:D010758', (41, 42)) ('PTEN', 'Gene', (250, 254)) ('breast-thyroid', 'Disease', (64, 78)) ('PTEN', 'Gene', '5728', (250, 254)) ('P', 'Chemical', 'MESH:D010758', (250, 251)) 62268 29909963 Breast cancer accounted for almost a quarter of tumors in our series, and most genes in which deleterious variants were detected are breast CPGs, many of which are not routinely tested in the UK. ('cancer', 'Phenotype', 'HP:0002664', (7, 13)) ('variants', 'Var', (106, 114)) ('breast CPGs', 'Disease', (133, 144)) ('Breast cancer', 'Phenotype', 'HP:0003002', (0, 13)) ('Breast cancer', 'Disease', 'MESH:D001943', (0, 13)) ('tumors', 'Disease', (48, 54)) ('tumors', 'Disease', 'MESH:D009369', (48, 54)) ('tumors', 'Phenotype', 'HP:0002664', (48, 54)) ('P', 'Chemical', 'MESH:D010758', (141, 142)) ('Breast cancer', 'Disease', (0, 13)) ('tumor', 'Phenotype', 'HP:0002664', (48, 53)) 62269 29909963 Pathogenic variants in ATM and CHEK2 are associated with moderate risks, and these genes had not been tested by the referring center in any of the individuals with P/LP variants. ('ATM', 'Gene', (23, 26)) ('CHEK2', 'Gene', '11200', (31, 36)) ('P', 'Chemical', 'MESH:D010758', (0, 1)) ('variants', 'Var', (11, 19)) ('P', 'Chemical', 'MESH:D010758', (164, 165)) ('CHEK2', 'Gene', (31, 36)) ('ATM', 'Gene', '472', (23, 26)) ('LP', 'Chemical', 'MESH:D008070', (166, 168)) ('P', 'Chemical', 'MESH:D010758', (167, 168)) 62270 29909963 Six probands had pathogenic variants in PALB2, a gene initially thought to confer moderate risk but subsequently reported to have a penetrance somewhere between that of moderate- and high-risk genes such as BRCA1 and BRCA2. ('BRCA2', 'Gene', '675', (217, 222)) ('PALB2', 'Gene', '79728', (40, 45)) ('variants', 'Var', (28, 36)) ('PALB2', 'Gene', (40, 45)) ('BRCA1', 'Gene', '672', (207, 212)) ('pathogenic', 'Reg', (17, 27)) ('BRCA2', 'Gene', (217, 222)) ('BRCA1', 'Gene', (207, 212)) 62271 29909963 A number of CPGs in which variants were identified, such as MAX and FH, have been relatively recently described as causing pheochromocytoma and paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (144, 157)) ('P', 'Chemical', 'MESH:D010758', (13, 14)) ('paraganglioma', 'Disease', (144, 157)) ('causing', 'Reg', (115, 122)) ('pheochromocytoma', 'Disease', (123, 139)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (123, 139)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (123, 139)) ('paraganglioma', 'Disease', 'MESH:D010235', (144, 157)) ('variants', 'Var', (26, 34)) 62275 29909963 Consistent with this are mutation detection rates of ~4% in individuals with earlier-onset (<=30 years) breast cancer and ~17% in MPT-affected individuals who were referred for germline TP53 testing and who generally fulfilled criteria for that investigation, had tumors characteristic of Li Fraumeni syndrome, and had an average age at diagnosis (of a first primary tumor) before 30 years. ('breast cancer', 'Disease', 'MESH:D001943', (104, 117)) ('breast cancer', 'Disease', (104, 117)) ('tumors', 'Disease', (264, 270)) ('P', 'Chemical', 'MESH:D010758', (131, 132)) ('P', 'Chemical', 'MESH:D010758', (187, 188)) ('Li Fraumeni syndrome', 'Disease', 'MESH:D016864', (289, 309)) ('Li Fraumeni syndrome', 'Disease', (289, 309)) ('tumor', 'Disease', (264, 269)) ('mutation', 'Var', (25, 33)) ('cancer', 'Phenotype', 'HP:0002664', (111, 117)) ('tumors', 'Disease', 'MESH:D009369', (264, 270)) ('TP53', 'Gene', (186, 190)) ('tumor', 'Disease', 'MESH:D009369', (264, 269)) ('tumor', 'Disease', (367, 372)) ('tumor', 'Disease', 'MESH:D009369', (367, 372)) ('tumor', 'Phenotype', 'HP:0002664', (264, 269)) ('TP53', 'Gene', '7157', (186, 190)) ('tumors', 'Phenotype', 'HP:0002664', (264, 270)) ('breast cancer', 'Phenotype', 'HP:0003002', (104, 117)) ('tumor', 'Phenotype', 'HP:0002664', (367, 372)) 62277 29909963 The application of a 76-gene panel to ~1,000 cancer-affected adults referred for germline genetic testing and ACMG-guideline-based assessment of the resulting variants showed a 17.5% rate, whereas tumor-normal sequencing of a similarly sized series with advanced cancer from the same center (regardless of genetic testing referral) reported an equivalent figure of 12.6%. ('cancer', 'Disease', 'MESH:D009369', (263, 269)) ('cancer', 'Phenotype', 'HP:0002664', (45, 51)) ('tumor', 'Disease', 'MESH:D009369', (197, 202)) ('cancer', 'Disease', (263, 269)) ('variants', 'Var', (159, 167)) ('cancer', 'Disease', 'MESH:D009369', (45, 51)) ('cancer', 'Phenotype', 'HP:0002664', (263, 269)) ('tumor', 'Phenotype', 'HP:0002664', (197, 202)) ('cancer', 'Disease', (45, 51)) ('tumor', 'Disease', (197, 202)) 62278 29909963 The genes containing the most frequent pathogenic variants in both studies were similar to those in the current study (BRCA1, BRCA2, CHEK2, and ATM), but the detection rates were lower than our estimate of around a third of newly referred MPT-affected individuals, most likely reflecting a greater likelihood of a germline pathogenic variant in both genetics referrals and in MPT-affected individuals. ('ATM', 'Gene', '472', (144, 147)) ('lower', 'NegReg', (179, 184)) ('MPT-affected', 'Disease', (239, 251)) ('P', 'Chemical', 'MESH:D010758', (240, 241)) ('BRCA1', 'Gene', (119, 124)) ('P', 'Chemical', 'MESH:D010758', (377, 378)) ('BRCA2', 'Gene', (126, 131)) ('CHEK2', 'Gene', '11200', (133, 138)) ('ATM', 'Gene', (144, 147)) ('variants', 'Var', (50, 58)) ('CHEK2', 'Gene', (133, 138)) ('BRCA2', 'Gene', '675', (126, 131)) ('BRCA1', 'Gene', '672', (119, 124)) 62281 29909963 Strikingly, this resulted in the identification of a large number of probands (29/67 [43.2%]) who harbored a P/LP CPG variant but whose tumor phenotypes were not entirely typical for the relevant CPG. ('P', 'Chemical', 'MESH:D010758', (109, 110)) ('CPG', 'Gene', (114, 117)) ('P', 'Chemical', 'MESH:D010758', (112, 113)) ('P/LP', 'Var', (109, 113)) ('tumor', 'Disease', 'MESH:D009369', (136, 141)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('P', 'Chemical', 'MESH:D010758', (115, 116)) ('LP', 'Chemical', 'MESH:D008070', (111, 113)) ('tumor', 'Disease', (136, 141)) ('P', 'Chemical', 'MESH:D010758', (197, 198)) 62282 29909963 This situation has been frequently reported by other studies of extensive NGS testing of cancer cohorts and represents a challenge for clinicians because the relevance of the variant to cancer risk in the consultand (including unaffected family members) is less clear. ('cancer', 'Phenotype', 'HP:0002664', (186, 192)) ('cancer', 'Disease', 'MESH:D009369', (89, 95)) ('cancer', 'Disease', (89, 95)) ('variant', 'Var', (175, 182)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) ('cancer', 'Disease', (186, 192)) ('cancer', 'Disease', 'MESH:D009369', (186, 192)) 62283 29909963 Specific atypical associations observed in this analysis were heterogeneous, and numbers were small, but some patterns were noted; for example, 5/16 (31.2%) carriers of CHEK2 variants had been previously diagnosed with renal cell carcinoma (RCC) (breast cancer occurred in 8/16 [50%]). ('cancer', 'Phenotype', 'HP:0002664', (254, 260)) ('variants', 'Var', (175, 183)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (219, 239)) ('breast cancer', 'Disease', 'MESH:D001943', (247, 260)) ('breast cancer', 'Disease', (247, 260)) ('CHEK2', 'Gene', '11200', (169, 174)) ('breast cancer', 'Phenotype', 'HP:0003002', (247, 260)) ('carcinoma', 'Phenotype', 'HP:0030731', (230, 239)) ('RCC', 'Disease', 'MESH:C538614', (241, 244)) ('renal cell carcinoma', 'Disease', (219, 239)) ('CHEK2', 'Gene', (169, 174)) ('RCC', 'Disease', (241, 244)) ('RCC', 'Phenotype', 'HP:0005584', (241, 244)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (219, 239)) 62284 29909963 An odds ratio of 2.1 for RCC has previously been observed in CHEK2-variant carriers but only in association with the c.470T>C (p.Ile157Thr) founder variant in a Polish population. ('CHEK2-variant', 'CellLine', 'CVCL:7204', (61, 74)) ('P', 'Chemical', 'MESH:D010758', (161, 162)) ('CHEK2-variant', 'Var', (61, 74)) ('p.Ile157Thr', 'Mutation', 'rs17879961', (127, 138)) ('c.470T>C', 'Mutation', 'rs17879961', (117, 125)) ('RCC', 'Phenotype', 'HP:0005584', (25, 28)) ('RCC', 'Disease', 'MESH:C538614', (25, 28)) ('CHEK2-variant', 'Gene', (61, 74)) ('RCC', 'Disease', (25, 28)) ('c.470T>C', 'Var', (117, 125)) 62285 29909963 2/6 (33.3%) carriers of PALB2 variants had cutaneous melanoma before the age of 40 years, and 2/10 (20%) individuals with ATM variants had thyroid cancer before that age, but an analysis of 182 melanoma families demonstrated only one pathogenic PALB2 variant, and thyroid malignancies have not been reported at increased frequency in carriers of homozygous or heterozygous ATM variants. ('variants', 'Var', (30, 38)) ('PALB2', 'Gene', (245, 250)) ('cancer', 'Phenotype', 'HP:0002664', (147, 153)) ('thyroid cancer', 'Disease', (139, 153)) ('ATM', 'Gene', (122, 125)) ('PALB2', 'Gene', '79728', (24, 29)) ('melanoma', 'Disease', 'MESH:D008545', (53, 61)) ('PALB2', 'Gene', '79728', (245, 250)) ('melanoma', 'Disease', 'MESH:D008545', (194, 202)) ('ATM', 'Gene', (373, 376)) ('thyroid cancer', 'Disease', 'MESH:D013964', (139, 153)) ('thyroid malignancies', 'Disease', (264, 284)) ('thyroid malignancies', 'Disease', 'MESH:D013959', (264, 284)) ('melanoma', 'Phenotype', 'HP:0002861', (53, 61)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (139, 153)) ('melanoma', 'Disease', (53, 61)) ('cutaneous melanoma', 'Disease', (43, 61)) ('variant', 'Var', (251, 258)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (43, 61)) ('cutaneous melanoma', 'Disease', 'MESH:C562393', (43, 61)) ('ATM', 'Gene', '472', (122, 125)) ('thyroid malignancies', 'Phenotype', 'HP:0100031', (264, 284)) ('melanoma', 'Phenotype', 'HP:0002861', (194, 202)) ('melanoma', 'Disease', (194, 202)) ('PALB2', 'Gene', (24, 29)) ('ATM', 'Gene', '472', (373, 376)) 62287 29909963 For example, although FH variants were demonstrated to predispose to RCC in 2002, they were shown to predispose to pheochromocytoma and paraganglioma 12 years later. ('RCC', 'Disease', 'MESH:C538614', (69, 72)) ('RCC', 'Disease', (69, 72)) ('variants', 'Var', (25, 33)) ('paraganglioma', 'Phenotype', 'HP:0002668', (136, 149)) ('predispose', 'Reg', (55, 65)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (115, 131)) ('paraganglioma', 'Disease', (136, 149)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (115, 131)) ('predispose', 'Reg', (101, 111)) ('paraganglioma', 'Disease', 'MESH:D010235', (136, 149)) ('RCC', 'Phenotype', 'HP:0005584', (69, 72)) ('pheochromocytoma', 'Disease', (115, 131)) 62289 29909963 Our observation of a significantly higher rate of loss-of-function variants associated with non-characteristic tumors in our cohort than in the gnomAD dataset suggests that at least some variants identified in individuals with atypical phenotypes are relevant. ('tumor', 'Phenotype', 'HP:0002664', (111, 116)) ('tumors', 'Phenotype', 'HP:0002664', (111, 117)) ('tumors', 'Disease', 'MESH:D009369', (111, 117)) ('tumors', 'Disease', (111, 117)) ('loss-of-function', 'NegReg', (50, 66)) ('variants', 'Var', (67, 75)) 62290 29909963 We would, however, urge caution in automatically linking a pathogenic CPG variant to the observed tumor phenotype without further evidence, such as larger studies of variant carriers or tumor studies that demonstrate a variant's causative effect. ('pathogenic', 'Reg', (59, 69)) ('CPG', 'Gene', (70, 73)) ('tumor', 'Disease', 'MESH:D009369', (186, 191)) ('P', 'Chemical', 'MESH:D010758', (71, 72)) ('tumor', 'Phenotype', 'HP:0002664', (186, 191)) ('tumor', 'Disease', 'MESH:D009369', (98, 103)) ('variant', 'Var', (74, 81)) ('tumor', 'Disease', (186, 191)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('tumor', 'Disease', (98, 103)) 62291 29909963 Another possibility is that tumors can occur coincidentally in the presence of a pathogenic constitutional CPG variant. ('variant', 'Var', (111, 118)) ('tumors', 'Disease', 'MESH:D009369', (28, 34)) ('tumors', 'Disease', (28, 34)) ('tumors', 'Phenotype', 'HP:0002664', (28, 34)) ('P', 'Chemical', 'MESH:D010758', (108, 109)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) 62292 29909963 For example, an in-frame FH insertion (c.1433-1434insAAA [p.Lys477_Asn478insLys] [Ensembl: ENST00000366560; GenBank: NM_000143.3]) was identified in three individuals, none of whom had been diagnosed with typical hereditary leiomyoma or RCC tumors. ('tumors', 'Phenotype', 'HP:0002664', (241, 247)) ('hereditary leiomyoma or RCC tumors', 'Disease', 'MESH:C538614', (213, 247)) ('c.1433-1434insAAA', 'Var', (39, 56)) ('hereditary leiomyoma or RCC tumors', 'Disease', (213, 247)) ('RCC', 'Phenotype', 'HP:0005584', (237, 240)) ('p.Lys477_Asn478insLys', 'Mutation', 'p.K477_,478N,K', (58, 79)) ('c.1433-1434insAAA', 'Mutation', 'c.1433_1434insAAA', (39, 56)) ('tumor', 'Phenotype', 'HP:0002664', (241, 246)) 62293 29909963 This variant causes recessively inherited fumarate hydratase deficiency (MIM: 606812) and has been demonstrated to disrupt enzyme activity. ('causes', 'Reg', (13, 19)) ('inherited fumarate hydratase deficiency', 'Disease', (32, 71)) ('variant', 'Var', (5, 12)) ('disrupt', 'NegReg', (115, 122)) ('enzyme activity', 'MPA', (123, 138)) ('fumarate hydratase deficiency', 'Phenotype', 'HP:0003536', (42, 71)) ('inherited fumarate hydratase deficiency', 'Disease', 'MESH:C538191', (32, 71)) 62295 29909963 Unusual MPT-CPG associations can occur when an individual harbors variants in multiple CPGs, either because (at least) one of the variants remains unidentified through diagnostic testing or because an interactive effect exists between them. ('interactive', 'Interaction', (201, 212)) ('P', 'Chemical', 'MESH:D010758', (13, 14)) ('associations', 'Interaction', (16, 28)) ('variants', 'Var', (66, 74)) ('P', 'Chemical', 'MESH:D010758', (9, 10)) ('MPT-CPG', 'Gene', (8, 15)) ('P', 'Chemical', 'MESH:D010758', (88, 89)) 62297 29909963 In the case of PMS2 and BMPR1A variants, the former appears to be penetrant on the basis of tumor studies, whereas the significance of the latter is unclear. ('variants', 'Var', (31, 39)) ('tumor', 'Disease', 'MESH:D009369', (92, 97)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('BMPR1A', 'Gene', '657', (24, 30)) ('tumor', 'Disease', (92, 97)) ('PMS2', 'Gene', (15, 19)) ('PMS2', 'Gene', '5395', (15, 19)) ('BMPR1A', 'Gene', (24, 30)) 62298 29909963 For the individual with FH and MAX variants, it is easier to attribute the diagnosed pheochromocytomas to the truncating MAX variant, but evidence for the role of FH in this tumor type is accumulating, and this variant could have contributed to tumorigenesis. ('tumor', 'Disease', (174, 179)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (85, 102)) ('contributed', 'Reg', (230, 241)) ('pheochromocytomas', 'Disease', (85, 102)) ('variants', 'Var', (35, 43)) ('tumor', 'Disease', 'MESH:D009369', (245, 250)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (85, 101)) ('tumor', 'Phenotype', 'HP:0002664', (245, 250)) ('tumor', 'Disease', 'MESH:D009369', (174, 179)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (85, 102)) ('tumor', 'Disease', (245, 250)) ('tumor', 'Phenotype', 'HP:0002664', (174, 179)) 62299 29909963 Although WGS could arguably offer the most sensitive and comprehensive strategy for detecting germline CPG variants, it is resource intensive in terms of sequencing, data storage, and analytical capacity. ('CPG', 'Gene', (103, 106)) ('variants', 'Var', (107, 115)) ('P', 'Chemical', 'MESH:D010758', (104, 105)) 62305 29909963 This illustrates the broader scope of WGS, but our results do not suggest that WGS offers enhanced CPG SNV or indel detection at present. ('indel', 'Var', (110, 115)) ('P', 'Chemical', 'MESH:D010758', (100, 101)) ('CPG', 'Var', (99, 102)) 62306 29909963 WGS identified six SVs predicted to affect a gene of interest, and two of these occurred in an individual whose personal or family history included tumors consistent with variants in that gene. ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('affect', 'Reg', (36, 42)) ('tumors', 'Disease', 'MESH:D009369', (148, 154)) ('tumors', 'Phenotype', 'HP:0002664', (148, 154)) ('tumors', 'Disease', (148, 154)) ('variants', 'Var', (171, 179)) 62307 29909963 The medical record showed no evidence that the individual with the PTEN inversion exhibited other features of constitutional variants in this gene, such as macrocephaly, as well as no record of an examination in a consultation where only BRCA1 and BRCA2 testing was anticipated. ('macrocephaly', 'Disease', (156, 168)) ('BRCA2', 'Gene', '675', (248, 253)) ('macrocephaly', 'Phenotype', 'HP:0000256', (156, 168)) ('BRCA1', 'Gene', '672', (238, 243)) ('PTEN', 'Gene', (67, 71)) ('inversion', 'Var', (72, 81)) ('PTEN', 'Gene', '5728', (67, 71)) ('BRCA1', 'Gene', (238, 243)) ('BRCA2', 'Gene', (248, 253)) ('macrocephaly', 'Disease', 'MESH:D058627', (156, 168)) 62310 29909963 Furthermore, WGS can detect inversions and translocations that are not characterized by MLPA. ('LP', 'Chemical', 'MESH:D008070', (89, 91)) ('inversions', 'Var', (28, 38)) ('translocations', 'Var', (43, 57)) 62311 29909963 A note of caution, however, arises from a deletion involving BRCA2 exons 14-16; we were made aware of this deletion by the referring clinician, but it was not detected through our analyses. ('deletion', 'Var', (42, 50)) ('BRCA2', 'Gene', '675', (61, 66)) ('BRCA2', 'Gene', (61, 66)) 62312 29909963 This includes novel CPGs (many of the P/LP variants in this analysis were detected because the gene or region was not available for testing at the time of consultation). ('P', 'Chemical', 'MESH:D010758', (38, 39)) ('CPGs', 'Disease', (20, 24)) ('P', 'Chemical', 'MESH:D010758', (21, 22)) ('P', 'Chemical', 'MESH:D010758', (41, 42)) ('variants', 'Var', (43, 51)) ('LP', 'Chemical', 'MESH:D008070', (40, 42)) 62313 29909963 However, evidence of regulatory elements that influence the expression of any given gene is accumulating, and high-throughput functional assays for studying them provide the opportunity to define diagnostically significant variants affecting CPGs. ('P', 'Chemical', 'MESH:D010758', (243, 244)) ('variants', 'Var', (223, 231)) ('CPGs', 'Disease', (242, 246)) 62314 29909963 In summary, we have demonstrated that the application of comprehensive CPG testing to a cohort of previously investigated MPT-affected individuals resulted in the detection of multiple pathogenic variants with relevance to the management of those individuals and their relatives. ('MPT-affected', 'Gene', (122, 134)) ('P', 'Chemical', 'MESH:D010758', (123, 124)) ('P', 'Chemical', 'MESH:D010758', (72, 73)) ('pathogenic', 'Reg', (185, 195)) ('variants', 'Var', (196, 204)) 62315 29909963 The finding that comprehensive genetic analysis of MPT-affected individuals can frequently result in the identification of pathogenic CPG variants that cannot automatically be attributed as causative for the observed MPT clinical phenotype has important implications both for clinical practice and for future research into the phenotypic consequences of germline CPG variants. ('P', 'Chemical', 'MESH:D010758', (364, 365)) ('result in', 'Reg', (91, 100)) ('variants', 'Var', (138, 146)) ('P', 'Chemical', 'MESH:D010758', (52, 53)) ('pathogenic', 'Reg', (123, 133)) ('CPG', 'Gene', (134, 137)) ('P', 'Chemical', 'MESH:D010758', (135, 136)) ('P', 'Chemical', 'MESH:D010758', (218, 219)) 62316 29909963 Summing together variant detection rates from a previous series of MPT-affected individuals ascertained in a similar manner and the present results suggests that first-line application of WGS (or other strategies for comprehensive CPG variant detection) to a clinical-genetics-referral-based cohort of MPT-affected individuals would detect a deleterious mutation in about a third of individuals, a large proportion of whom would not have a family history of cancer in a first-degree relative. ('cancer', 'Disease', 'MESH:D009369', (458, 464)) ('cancer', 'Disease', (458, 464)) ('P', 'Chemical', 'MESH:D010758', (68, 69)) ('MPT-affected', 'Gene', (302, 314)) ('detect', 'Reg', (333, 339)) ('deleterious', 'Reg', (342, 353)) ('cancer', 'Phenotype', 'HP:0002664', (458, 464)) ('P', 'Chemical', 'MESH:D010758', (303, 304)) ('mutation', 'Var', (354, 362)) ('P', 'Chemical', 'MESH:D010758', (232, 233)) 62382 26855794 123I- MIBG causes low radiation dose, superior image quality, and high sensitivity in comparison to 131I-MIBG. ('131I-MIBG', 'Chemical', 'MESH:D019797', (100, 109)) ('123I- MIBG', 'Chemical', 'MESH:D019797', (0, 10)) ('123I- MIBG', 'Var', (0, 10)) ('image', 'MPA', (47, 52)) ('sensitivity', 'MPA', (71, 82)) 62462 26215714 The lymph node was negative for malignant neoplasm; the diagnosis was small leiomyoma (+ s100-actin). ('small leiomyoma', 'Disease', (70, 85)) ('+ s100-actin', 'Var', (87, 99)) ('neoplasm', 'Phenotype', 'HP:0002664', (42, 50)) ('small leiomyoma', 'Disease', 'MESH:D007889', (70, 85)) ('malignant neoplasm', 'Disease', (32, 50)) ('malignant neoplasm', 'Disease', 'MESH:D009369', (32, 50)) 62499 25520578 Mutations within genes PGL1, PGL3, PGL4 (responsible for coding of 3 subtypes of succinate dehydrogenase) predispose to paraganglioma occurrence. ('PGL3', 'Gene', '6391', (29, 33)) ('PGL4', 'Gene', (35, 39)) ('PGL4', 'Gene', '6390', (35, 39)) ('paraganglioma', 'Phenotype', 'HP:0002668', (120, 133)) ('PGL3', 'Gene', (29, 33)) ('predispose to', 'Reg', (106, 119)) ('paraganglioma', 'Disease', (120, 133)) ('Mutations', 'Var', (0, 9)) ('paraganglioma', 'Disease', 'MESH:D010235', (120, 133)) ('PGL1', 'Gene', (23, 27)) 62530 25520578 Patients who underwent microscopically incomplete surgery had a higher rate of overall survival (100%), as compared to the patients in whom the surgery was grossly incomplete (84%), however this difference was not statistically significant. ('higher', 'PosReg', (64, 70)) ('patients', 'Species', '9606', (123, 131)) ('Patients', 'Species', '9606', (0, 8)) ('microscopically', 'Var', (23, 38)) ('overall survival', 'MPA', (79, 95)) 62563 24688789 Twenty-five percent of pheochromocytoma and paraganglioma occur in the setting of familial syndromes (SDH gene mutations; MEN 2A/B; von Hipple-Lindau; Neurofibromatosis I; Carney triad). ('mutations', 'Var', (111, 120)) ('paraganglioma', 'Phenotype', 'HP:0002668', (44, 57)) ('SDH', 'Gene', (102, 105)) ('occur', 'Reg', (58, 63)) ('2A/B', 'SUBSTITUTION', 'None', (126, 130)) ('paraganglioma', 'Disease', (44, 57)) ('2A/B', 'Var', (126, 130)) ('pheochromocytoma', 'Disease', (23, 39)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (151, 168)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (23, 39)) ('familial syndromes', 'Disease', (82, 100)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (23, 39)) ('von Hipple-Lindau; Neurofibromatosis I', 'Disease', 'MESH:D006623', (132, 170)) ('paraganglioma', 'Disease', 'MESH:D010235', (44, 57)) ('von Hipple-Lindau; Neurofibromatosis I', 'Disease', (132, 170)) ('SDH', 'Gene', '6390', (102, 105)) 62594 24688789 Typically in Tako-Tsubo disease, the decreased ejection fraction caused by myocardial alterations undergoes spontaneous recovery. ('Tako-Tsubo disease', 'Disease', (13, 31)) ('Tako-Tsubo disease', 'Disease', 'MESH:D054549', (13, 31)) ('ejection fraction', 'MPA', (47, 64)) ('decreased ejection fraction', 'Phenotype', 'HP:0012664', (37, 64)) ('decreased', 'NegReg', (37, 46)) ('alterations', 'Var', (86, 97)) 62601 24688789 Normalization of blood volume reduces the risk of prolonged hypotension after tumour removal. ('hypotension', 'Disease', 'MESH:D007022', (60, 71)) ('tumour removal', 'Disease', (78, 92)) ('Normalization', 'Var', (0, 13)) ('reduces the risk of prolonged hypotension', 'Phenotype', 'HP:0001278', (30, 71)) ('hypotension', 'Disease', (60, 71)) ('blood volume reduces', 'Phenotype', 'HP:0011106', (17, 37)) ('hypotension', 'Phenotype', 'HP:0002615', (60, 71)) ('tumour', 'Phenotype', 'HP:0002664', (78, 84)) ('tumour removal', 'Disease', 'MESH:D009369', (78, 92)) 62611 24688789 Phentolamine is alpha-adrenergic antagonist that can be given intravenously as continuous infusion or as boluses of 1 to 2 mg; it can cause tachycardia if the patient is not receiving beta-blockers. ('tachycardia', 'Disease', (140, 151)) ('Phentolamine', 'Var', (0, 12)) ('tachycardia', 'Disease', 'MESH:D013610', (140, 151)) ('cause', 'Reg', (134, 139)) ('Phentolamine', 'Chemical', 'MESH:D010646', (0, 12)) ('patient', 'Species', '9606', (159, 166)) ('tachycardia', 'Phenotype', 'HP:0001649', (140, 151)) 62625 24688789 Alpha-adrenergic blockade (phenoxybenzamine or phentolamine) is usually started at the time of diagnosis and it is carried on preoperatively under close blood pressure monitoring, to prevent cardiovascular complications that may occur during surgery due to excess catecholamine secretion. ('phentolamine', 'Var', (47, 59)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (27, 43)) ('catecholamine', 'Chemical', 'MESH:D002395', (264, 277)) ('cardiovascular complications', 'Disease', 'MESH:D002318', (191, 219)) ('cardiovascular complications', 'Disease', (191, 219)) ('cardiovascular complications', 'Phenotype', 'HP:0001626', (191, 219)) ('excess catecholamine', 'Phenotype', 'HP:0003334', (257, 277)) ('close blood pressure', 'Phenotype', 'HP:0002615', (147, 167)) ('phenoxybenzamine', 'Var', (27, 43)) ('phentolamine', 'Chemical', 'MESH:D010646', (47, 59)) 62640 22403753 Bilateral adrenal pheochromocytoma with a germline L790F mutation in the RET oncogene About ten percent of pheochromocytomas are associated with familial syndrome. ('associated', 'Reg', (129, 139)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (107, 123)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (18, 34)) ('familial syndrome', 'Disease', (145, 162)) ('RET', 'Gene', '5979', (73, 76)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (10, 34)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (107, 124)) ('L790F', 'Mutation', 'rs75030001', (51, 56)) ('pheochromocytomas', 'Disease', (107, 124)) ('familial syndrome', 'Disease', 'MESH:D009386', (145, 162)) ('Bilateral adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (0, 34)) ('Bilateral adrenal pheochromocytoma', 'Disease', (0, 34)) ('L790F', 'Var', (51, 56)) ('RET', 'Gene', (73, 76)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (107, 124)) 62643 22403753 Genetic test detected a L790F germline mutation of RET oncogene. ('RET', 'Gene', '5979', (51, 54)) ('L790F', 'Mutation', 'rs75030001', (24, 29)) ('L790F', 'Var', (24, 29)) ('RET', 'Gene', (51, 54)) ('detected', 'Reg', (13, 21)) 62647 22403753 However, it is now recognized that the frequency of germline mutations in apparently sporadic pheochromocytoma is as high as 24%. ('pheochromocytoma', 'Disease', (94, 110)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (94, 110)) ('germline mutations', 'Var', (52, 70)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (94, 110)) 62652 22403753 We report a case of a 44-year-old man with bilateral pheochromocytomas whose genetic study shows a rare germline L790F mutation of RET oncogene. ('L790F', 'Mutation', 'rs75030001', (113, 118)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (53, 70)) ('man', 'Species', '9606', (34, 37)) ('bilateral pheochromocytomas', 'Disease', (43, 70)) ('L790F', 'Var', (113, 118)) ('RET', 'Gene', '5979', (131, 134)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (43, 70)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (53, 69)) ('RET', 'Gene', (131, 134)) 62662 22403753 We tested germline mutation of RET oncogene with patient's informed consent. ('RET', 'Gene', '5979', (31, 34)) ('patient', 'Species', '9606', (49, 56)) ('tested', 'Reg', (3, 9)) ('RET', 'Gene', (31, 34)) ('germline mutation', 'Var', (10, 27)) 62666 22403753 After the result of germline mutation of RET oncogene, we diagnosed the patient as multiple endocrine neoplasia type 2A, and searched an evidence of medullary thyroid cancer in the patient and his family members. ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (83, 111)) ('thyroid cancer', 'Disease', (159, 173)) ('patient', 'Species', '9606', (181, 188)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (159, 173)) ('RET', 'Gene', (41, 44)) ('thyroid cancer', 'Disease', 'MESH:D013964', (159, 173)) ('patient', 'Species', '9606', (72, 79)) ('germline mutation', 'Var', (20, 37)) ('multiple endocrine neoplasia', 'Disease', (83, 111)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (149, 173)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (92, 111)) ('cancer', 'Phenotype', 'HP:0002664', (167, 173)) ('neoplasia', 'Phenotype', 'HP:0002664', (102, 111)) ('RET', 'Gene', '5979', (41, 44)) 62671 22403753 According to the European Network for the Study of Adrenal Tumors Pheochromocytoma Working Group, germline mutation rate was 25.9% from 642 pheochromocytoma and paraganglioma patients. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (140, 156)) ('paraganglioma', 'Phenotype', 'HP:0002668', (161, 174)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (66, 82)) ('paraganglioma', 'Disease', (161, 174)) ('germline mutation', 'Var', (98, 115)) ('Adrenal Tumors Pheochromocytoma Working', 'Disease', (51, 90)) ('Adrenal Tumors Pheochromocytoma Working', 'Disease', 'MESH:D010673', (51, 90)) ('pheochromocytoma', 'Disease', (140, 156)) ('patients', 'Species', '9606', (175, 183)) ('Tumors', 'Phenotype', 'HP:0002664', (59, 65)) ('paraganglioma', 'Disease', 'MESH:D010235', (161, 174)) ('Adrenal Tumors Pheochromocytoma', 'Phenotype', 'HP:0006748', (51, 82)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (140, 156)) 62672 22403753 In the other study, 24.3% of the 271 sporadic pheochromocytoma patients had germline mutations. ('pheochromocytoma', 'Disease', (46, 62)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (46, 62)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (46, 62)) ('patients', 'Species', '9606', (63, 71)) ('germline mutations', 'Var', (76, 94)) 62681 22403753 In this case we can exclude NF1 mutation based on the clinical features. ('NF1', 'Gene', '4763', (28, 31)) ('mutation', 'Var', (32, 40)) ('NF1', 'Gene', (28, 31)) 62690 22403753 Germline mutation of RET oncogene is associated with MEN type 2 which has typical character of genotype-phenotype correlation and mutation hot spots. ('MEN type 2', 'Disease', (53, 63)) ('MEN', 'Species', '9606', (53, 56)) ('RET', 'Gene', (21, 24)) ('associated', 'Reg', (37, 47)) ('Germline mutation', 'Var', (0, 17)) ('RET', 'Gene', '5979', (21, 24)) 62694 22403753 Patients with level 1 mutations (codons 609, 768, 790, 791, 804 and 891) have the lowest risk for medullary thyroid cancer, patients with level 2 mutations (codons 611, 618, 620 and 634) are intermediate risk, and patient with level 3 mutations (codons 883 and 918) have the highest risk for medullary thyroid cancer. ('thyroid cancer', 'Disease', (302, 316)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (98, 122)) ('thyroid cancer', 'Disease', (108, 122)) ('patient', 'Species', '9606', (214, 221)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (108, 122)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (292, 316)) ('lowest', 'NegReg', (82, 88)) ('thyroid cancer', 'Disease', 'MESH:D013964', (302, 316)) ('thyroid cancer', 'Disease', 'MESH:D013964', (108, 122)) ('cancer', 'Phenotype', 'HP:0002664', (310, 316)) ('codons 609', 'Var', (33, 43)) ('Patients', 'Species', '9606', (0, 8)) ('codons 883', 'Var', (246, 256)) ('patient', 'Species', '9606', (124, 131)) ('codons', 'Var', (157, 163)) ('cancer', 'Phenotype', 'HP:0002664', (116, 122)) ('patients', 'Species', '9606', (124, 132)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (302, 316)) 62695 22403753 Medullary thyroid cancer was developed in 100% of level 3, 73% of level 2 and only 45% of level 1 RET gene mutation. ('thyroid cancer', 'Phenotype', 'HP:0002890', (10, 24)) ('thyroid cancer', 'Disease', (10, 24)) ('Medullary thyroid cancer', 'Phenotype', 'HP:0002865', (0, 24)) ('RET', 'Gene', (98, 101)) ('thyroid cancer', 'Disease', 'MESH:D013964', (10, 24)) ('cancer', 'Phenotype', 'HP:0002664', (18, 24)) ('mutation', 'Var', (107, 115)) ('RET', 'Gene', '5979', (98, 101)) 62696 22403753 In this case, L790F mutation was found in RET oncogene, which was not reported before in Korea. ('L790F', 'Var', (14, 19)) ('RET', 'Gene', '5979', (42, 45)) ('L790F', 'Mutation', 'rs75030001', (14, 19)) ('RET', 'Gene', (42, 45)) 62697 22403753 first described a new hot spot for mutations affecting codon 790 of RET oncogene. ('mutations affecting codon 790', 'Var', (35, 64)) ('RET', 'Gene', (68, 71)) ('RET', 'Gene', '5979', (68, 71)) 62698 22403753 They reported that nine (69%) of 13 carriers with L790F mutation had developed medullary thyroid cancer. ('thyroid cancer', 'Disease', 'MESH:D013964', (89, 103)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (79, 103)) ('L790F', 'Var', (50, 55)) ('cancer', 'Phenotype', 'HP:0002664', (97, 103)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (89, 103)) ('thyroid cancer', 'Disease', (89, 103)) ('L790F', 'Mutation', 'rs75030001', (50, 55)) 62699 22403753 Initially, L790F mutation was reported to be associated with pheochromocytoma, but in the following study, L790F mutation rarely associated with pheochromocytoma. ('associated', 'Reg', (129, 139)) ('pheochromocytoma', 'Disease', (145, 161)) ('L790F mutation', 'Var', (11, 25)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (145, 161)) ('L790F', 'Mutation', 'rs75030001', (11, 16)) ('L790F', 'Mutation', 'rs75030001', (107, 112)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (145, 161)) ('associated', 'Reg', (45, 55)) ('pheochromocytoma', 'Disease', (61, 77)) ('L790F', 'Var', (107, 112)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (61, 77)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (61, 77)) 62700 22403753 Interestingly, this case shows bilateral pheochromocytomas which was rare phenotype of L790F and does not show medullary thyroid cancer which was common phenotype of L790F. ('thyroid cancer', 'Disease', (121, 135)) ('cancer', 'Phenotype', 'HP:0002664', (129, 135)) ('thyroid cancer', 'Disease', 'MESH:D013964', (121, 135)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (31, 58)) ('L790F', 'Mutation', 'rs75030001', (87, 92)) ('L790F', 'Mutation', 'rs75030001', (166, 171)) ('L790F', 'Var', (87, 92)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (111, 135)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (41, 58)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (41, 57)) ('bilateral pheochromocytomas', 'Disease', (31, 58)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (121, 135)) 62704 22403753 The highest-risk category of pheochromocytoma includes SDHB, SDHD and the level 3 risk of RET; the high-risk category includes VHL missense mutation and the level 2 risk of RET; the least-high risk category includes VHL truncating mutations and level 1 risk of RET. ('SDHB', 'Gene', (55, 59)) ('SDHB', 'Gene', '6390', (55, 59)) ('pheochromocytoma', 'Disease', (29, 45)) ('RET', 'Gene', '5979', (261, 264)) ('VHL', 'Disease', 'MESH:D006623', (127, 130)) ('RET', 'Gene', '5979', (173, 176)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (29, 45)) ('VHL', 'Disease', (216, 219)) ('VHL', 'Disease', (127, 130)) ('missense mutation', 'Var', (131, 148)) ('RET', 'Gene', '5979', (90, 93)) ('SDHD', 'Gene', '6392', (61, 65)) ('VHL', 'Disease', 'MESH:D006623', (216, 219)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (29, 45)) ('SDHD', 'Gene', (61, 65)) ('RET', 'Gene', (261, 264)) ('RET', 'Gene', (90, 93)) ('RET', 'Gene', (173, 176)) 62705 22403753 The incidence of germline mutation of multifocal or bilateral pheochromocytomas was much higher than that of unilateral pheochromocytoma. ('bilateral pheochromocytomas', 'Disease', (52, 79)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (52, 79)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (120, 136)) ('higher', 'Reg', (89, 95)) ('germline mutation', 'Var', (17, 34)) ('unilateral pheochromocytoma', 'Disease', 'MESH:D010673', (109, 136)) ('unilateral pheochromocytoma', 'Disease', (109, 136)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (62, 79)) 62708 22403753 They recommended sequential mutational analysis of RET, followed by VHL and SDHD in bilateral pheochromocytoma. ('SDHD', 'Gene', (76, 80)) ('SDHD', 'Gene', '6392', (76, 80)) ('VHL', 'Disease', (68, 71)) ('RET', 'Gene', '5979', (51, 54)) ('VHL', 'Disease', 'MESH:D006623', (68, 71)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (94, 110)) ('mutational analysis', 'Var', (28, 47)) ('RET', 'Gene', (51, 54)) ('bilateral pheochromocytoma', 'Disease', (84, 110)) ('bilateral pheochromocytoma', 'Disease', 'MESH:D010673', (84, 110)) 62709 22403753 This case is the first report of L790F RET germline mutation in Korea. ('RET', 'Gene', (39, 42)) ('L790F', 'Var', (33, 38)) ('RET', 'Gene', '5979', (39, 42)) ('L790F', 'Mutation', 'rs75030001', (33, 38)) 62743 20642819 With the advances in imaging technology, ultrasound, computed tomography (CT) and magnetic resonance imaging (MRI) may be useful in localizing the tumor, while I131-methyliodobenzylguanidine (I131-MIBG) and positron emission tomography (PET)-CT help to evaluate its function. ('tumor', 'Phenotype', 'HP:0002664', (147, 152)) ('tumor', 'Disease', (147, 152)) ('I131-methyliodobenzylguanidine', 'Var', (160, 190)) ('I131-methyliodobenzylguanidine', 'Chemical', '-', (160, 190)) ('I131', 'Chemical', 'MESH:C000614965', (160, 164)) ('tumor', 'Disease', 'MESH:D009369', (147, 152)) ('MIBG', 'Chemical', 'MESH:D019797', (197, 201)) ('I131', 'Chemical', 'MESH:C000614965', (192, 196)) 62744 20642819 The significance of cystoscopy is limited and biopsy is not recommended since the tumor is usually located in the submucosa with an intact surface, and biopsy may provoke a hypertensive episode in patients who have not had proper medical treatment. ('patients', 'Species', '9606', (197, 205)) ('provoke', 'Reg', (163, 170)) ('biopsy', 'Var', (152, 158)) ('tumor', 'Disease', 'MESH:D009369', (82, 87)) ('hypertensive', 'Disease', 'MESH:D006973', (173, 185)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('hypertensive', 'Disease', (173, 185)) ('tumor', 'Disease', (82, 87)) 62760 19605896 In the many cases, especially those in man, pheochromocytoma is associated with familial tumor syndromes due to inherited mutations in a variety of proto-oncogenes and tumor suppressor genes. ('associated', 'Reg', (64, 74)) ('man', 'Species', '9606', (39, 42)) ('tumor', 'Disease', (168, 173)) ('familial tumor syndromes', 'Disease', 'MESH:D009386', (80, 104)) ('pheochromocytoma', 'Disease', (44, 60)) ('familial tumor syndromes', 'Disease', (80, 104)) ('man', 'Species', '9606', (7, 10)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (44, 60)) ('mutations', 'Var', (122, 131)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (44, 60)) ('tumor', 'Disease', 'MESH:D009369', (168, 173)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('tumor', 'Disease', (89, 94)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) 62852 19605896 Pheochromocytomas are present in roughly half of the cases of MEN2 and result from a mutation in the RET proto-oncogene. ('result from', 'Reg', (71, 82)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (0, 17)) ('MEN', 'Species', '9606', (62, 65)) ('mutation', 'Var', (85, 93)) ('RET', 'Gene', '5979', (101, 104)) ('Pheochromocytomas', 'Disease', (0, 17)) ('MEN2', 'Gene', (62, 66)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('RET', 'Gene', (101, 104)) 62853 19605896 In fact, bilateral pheochromocytomas are a strong factor in screening for RET mutations in affected human patients. ('RET', 'Gene', (74, 77)) ('bilateral pheochromocytomas', 'Disease', (9, 36)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (19, 35)) ('human', 'Species', '9606', (100, 105)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (19, 36)) ('mutations', 'Var', (78, 87)) ('RET', 'Gene', '5979', (74, 77)) ('patients', 'Species', '9606', (106, 114)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (9, 36)) 62854 19605896 In cases of VHL syndrome, the absence of the VHL protein leads to stabilization of hypoxia inducible factor 1alpha thereby potentiating cell growth and angiogenesis. ('angiogenesis', 'CPA', (152, 164)) ('VHL', 'Disease', (12, 15)) ('VHL syndrome', 'Disease', (12, 24)) ('hypoxia', 'Disease', 'MESH:D000860', (83, 90)) ('absence', 'Var', (30, 37)) ('cell growth', 'CPA', (136, 147)) ('VHL', 'Disease', (45, 48)) ('VHL', 'Disease', 'MESH:D006623', (45, 48)) ('VHL syndrome', 'Disease', 'MESH:D006623', (12, 24)) ('potentiating', 'PosReg', (123, 135)) ('VHL', 'Disease', 'MESH:D006623', (12, 15)) ('hypoxia', 'Disease', (83, 90)) ('stabilization', 'MPA', (66, 79)) 62875 16405730 Mutation analysis of SDHB and SDHC: novel germline mutations in sporadic head and neck paraganglioma and familial paraganglioma and/or pheochromocytoma Germline mutations of the SDHD, SDHB and SDHC genes, encoding three of the four subunits of succinate dehydrogenase, are a major cause of hereditary paraganglioma and pheochromocytoma, and demonstrate that these genes are classic tumor suppressors. ('mutations', 'Var', (51, 60)) ('pheochromocytoma', 'Disease', (135, 151)) ('familial paraganglioma', 'Disease', (105, 127)) ('SDHB', 'Gene', (184, 188)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (135, 151)) ('paraganglioma', 'Phenotype', 'HP:0002668', (87, 100)) ('neck paraganglioma', 'Disease', (82, 100)) ('SDHB', 'Gene', '6390', (21, 25)) ('SDHD', 'Gene', (178, 182)) ('paraganglioma', 'Phenotype', 'HP:0002668', (301, 314)) ('succinate dehydrogenase', 'Gene', '6392', (244, 267)) ('SDHC', 'Gene', (30, 34)) ('classic tumor', 'Disease', 'MESH:D005693', (374, 387)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (73, 100)) ('SDHC', 'Gene', (193, 197)) ('classic tumor', 'Disease', (374, 387)) ('hereditary paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (290, 335)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (82, 100)) ('SDHB', 'Gene', (21, 25)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (105, 127)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (319, 335)) ('paraganglioma', 'Phenotype', 'HP:0002668', (114, 127)) ('SDHB', 'Gene', '6390', (184, 188)) ('tumor', 'Phenotype', 'HP:0002664', (382, 387)) ('cause', 'Reg', (281, 286)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (135, 151)) ('SDHC', 'Gene', '6391', (30, 34)) ('pheochromocytoma', 'Disease', (319, 335)) ('succinate dehydrogenase', 'Gene', (244, 267)) ('mutations', 'Var', (161, 170)) ('SDHC', 'Gene', '6391', (193, 197)) ('SDHD', 'Gene', '6392', (178, 182)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (319, 335)) 62877 16405730 Using conformation sensitive gel electrophoresis (CSGE) and direct DNA sequencing to analyse genomic DNA from peripheral blood lymphocytes, here we describe the mutation analysis of the SDHB and SDHC genes in 37 patients with sporadic (i.e. ('SDHC', 'Gene', (195, 199)) ('SDHB', 'Gene', (186, 190)) ('SDHC', 'Gene', '6391', (195, 199)) ('mutation analysis', 'Var', (161, 178)) ('patients', 'Species', '9606', (212, 220)) ('SDHB', 'Gene', '6390', (186, 190)) 62879 16405730 Two sporadic patients were found to have a SDHB splice site mutation in intron 4, c.423+1G>A, which produces a mis-spliced transcript with a 54 nucleotide deletion, resulting in an 18 amino acid in-frame deletion. ('c.423+1G>A', 'Mutation', 'rs398122805', (82, 92)) ('SDHB', 'Gene', '6390', (43, 47)) ('patients', 'Species', '9606', (13, 21)) ('SDHB', 'Gene', (43, 47)) ('c.423+1G>A', 'Var', (82, 92)) 62880 16405730 A third patient was found to carry the c.214C>T (p.Arg72Cys) missense mutation in exon 4 of SDHC, which is situated in a highly conserved protein motif that constitutes the quinone-binding site of the succinate: ubiquinone oxidoreductase (SQR) complex in E. coli. ('succinate', 'Chemical', 'MESH:D019802', (201, 210)) ('SDHC', 'Gene', '6391', (92, 96)) ('quinone', 'Chemical', 'MESH:C004532', (215, 222)) ('c.214C>T', 'Var', (39, 47)) ('p.Arg72Cys', 'Mutation', 'rs756676111', (49, 59)) ('patient', 'Species', '9606', (8, 15)) ('c.214C>T', 'Mutation', 'rs756676111', (39, 47)) ('quinone', 'Chemical', 'MESH:C004532', (173, 180)) ('SDHC', 'Gene', (92, 96)) ('E. coli', 'Species', '562', (255, 262)) 62881 16405730 Together with our previous results, we found 27 germline mutations of SDH genes in 95 cases (28%) of sporadic head and neck paraganglioma. ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (110, 137)) ('SDH', 'Gene', '6390', (70, 73)) ('paraganglioma', 'Phenotype', 'HP:0002668', (124, 137)) ('neck paraganglioma', 'Disease', (119, 137)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (119, 137)) ('SDH', 'Gene', (70, 73)) ('germline mutations', 'Var', (48, 66)) 62882 16405730 In addition all index patients of five families showing hereditary pheochromocytoma-paraganglioma were found to carry germline mutations of SDHB: four of which were novel, c.343C>T (p.Arg115X), c.141G>A (p.Trp47X), c.281G>A (p.Arg94Lys), and c.653G>C (p.Trp218Ser), and one reported previously, c.136C>T, p.Arg46X. ('hereditary pheochromocytoma', 'Disease', 'MESH:D010673', (56, 83)) ('pheochromocytoma-paraganglioma', 'Disease', (67, 97)) ('hereditary pheochromocytoma', 'Disease', (56, 83)) ('c.136C>T', 'Var', (295, 303)) ('c.343C>T', 'Mutation', 'rs751000085', (172, 180)) ('c.343C>T', 'Var', (172, 180)) ('p.Arg94Lys', 'Mutation', 'rs761381025', (225, 235)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (67, 83)) ('c.136C>T', 'Mutation', 'rs74315370', (295, 303)) ('patients', 'Species', '9606', (22, 30)) ('p.Trp218Ser', 'Mutation', 'p.W218S', (252, 263)) ('SDHB', 'Gene', '6390', (140, 144)) ('paraganglioma', 'Phenotype', 'HP:0002668', (84, 97)) ('c.141G>A', 'Var', (194, 202)) ('c.141G>A', 'Mutation', 'rs1060503762', (194, 202)) ('c.281G>A', 'Mutation', 'rs761381025', (215, 223)) ('c.653G>C', 'Mutation', 'c.653G>C', (242, 250)) ('c.653G>C', 'Var', (242, 250)) ('SDHB', 'Gene', (140, 144)) ('p.Arg46X', 'Mutation', 'rs74315370', (305, 313)) ('pheochromocytoma-paraganglioma', 'Disease', 'MESH:D010673', (67, 97)) ('p.Arg115X', 'Mutation', 'rs751000085', (182, 191)) ('p.Trp47X', 'Mutation', 'rs1060503762', (204, 212)) 62883 16405730 In conclusion, these data indicate that germline mutations of SDHB and SDHC play a minor role in sporadic head and neck paraganglioma and further underline the importance of germline SDHB mutations in cases of familial pheochromocytoma-paraganglioma. ('SDHB', 'Gene', (183, 187)) ('SDHB', 'Gene', '6390', (62, 66)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (115, 133)) ('SDHC', 'Gene', '6391', (71, 75)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (106, 133)) ('paraganglioma', 'Phenotype', 'HP:0002668', (120, 133)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (219, 235)) ('SDHB', 'Gene', '6390', (183, 187)) ('neck paraganglioma', 'Disease', (115, 133)) ('sporadic', 'Disease', (97, 105)) ('mutations', 'Var', (188, 197)) ('familial pheochromocytoma-paraganglioma', 'Disease', 'MESH:C531777', (210, 249)) ('familial pheochromocytoma-paraganglioma', 'Disease', (210, 249)) ('paraganglioma', 'Phenotype', 'HP:0002668', (236, 249)) ('SDHB', 'Gene', (62, 66)) ('SDHC', 'Gene', (71, 75)) 62888 16405730 no known family history), clustering in families has long been recognized, and the search for susceptibility loci led to the mapping of two putative loci: PGL1-11q23 and PGL2-11q13. ('PGL', 'Phenotype', 'HP:0002668', (170, 173)) ('PGL', 'Phenotype', 'HP:0002668', (155, 158)) ('PGL1-11q23', 'Var', (155, 165)) ('PGL2', 'Gene', '54949', (170, 174)) ('PGL2', 'Gene', (170, 174)) 62889 16405730 The identification of PGL1 followed in 2000, when Baysal et al reported germline mutations in SDHD (succinate dehydrogenase, subunit D) in PGL1-linked families. ('succinate dehydrogenase', 'Gene', '6392', (101, 124)) ('SDHD', 'Gene', '6392', (95, 99)) ('PGL', 'Phenotype', 'HP:0002668', (140, 143)) ('mutations', 'Var', (82, 91)) ('SDHD', 'Gene', (95, 99)) ('succinate dehydrogenase', 'Gene', (101, 124)) ('PGL', 'Phenotype', 'HP:0002668', (22, 25)) 62890 16405730 Subsequently, germline mutations in SDHC (PGL3-1q21) and SDHB (PGL4-1p36) were identified using a candidate gene approach, and both Astuti et al and others have reported that germline mutations of SDHB are involved in familial pheochromocytoma. ('SDHB', 'Gene', '6390', (198, 202)) ('SDHB', 'Gene', '6390', (57, 61)) ('SDHB', 'Gene', (198, 202)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (228, 244)) ('mutations', 'Var', (185, 194)) ('PGL', 'Phenotype', 'HP:0002668', (63, 66)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (219, 244)) ('SDHB', 'Gene', (57, 61)) ('PGL', 'Phenotype', 'HP:0002668', (42, 45)) ('SDHC', 'Gene', (36, 40)) ('involved', 'Reg', (207, 215)) ('familial pheochromocytoma', 'Disease', (219, 244)) ('SDHC', 'Gene', '6391', (36, 40)) 62894 16405730 Previously we reported the frequency of SDHD mutations in familial and sporadic head and neck paraganglioma in the Netherlands. ('SDHD', 'Gene', '6392', (40, 44)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (80, 107)) ('mutations', 'Var', (45, 54)) ('SDHD', 'Gene', (40, 44)) ('neck paraganglioma', 'Disease', (89, 107)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (89, 107)) ('paraganglioma', 'Phenotype', 'HP:0002668', (94, 107)) 62895 16405730 Nearly all clearly familial paraganglioma is accounted for by the Dutch founder mutations Asp92Tyr and Leu139Pro. ('familial paraganglioma', 'Disease', (19, 41)) ('paraganglioma', 'Phenotype', 'HP:0002668', (28, 41)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (19, 41)) ('Asp92Tyr', 'SUBSTITUTION', 'None', (90, 98)) ('Asp92Tyr', 'Var', (90, 98)) ('Leu139Pro', 'Var', (103, 112)) ('Leu139Pro', 'SUBSTITUTION', 'None', (103, 112)) 62896 16405730 However, a group of 37 sporadic patients tested negative for SDHD mutations. ('mutations', 'Var', (66, 75)) ('SDHD', 'Gene', (61, 65)) ('SDHD', 'Gene', '6392', (61, 65)) ('patients', 'Species', '9606', (32, 40)) 62908 16405730 All the patients ascertained in Leiden had previously been investigated for the presence of SDHD mutations using SSCP and restriction digestion analysis and found to be negative. ('mutations', 'Var', (97, 106)) ('SDHD', 'Gene', (92, 96)) ('SDHD', 'Gene', '6392', (92, 96)) ('patients', 'Species', '9606', (8, 16)) 62909 16405730 Mutations in three of the familial pheochromocytoma-paraganglioma cases were detected using CSGE analysis and confirmed by direct sequencing, while the remaining two were identified by direct sequencing of the SDHB gene, indicated by a suspicious clinical history. ('familial pheochromocytoma-paraganglioma', 'Disease', (26, 65)) ('familial pheochromocytoma-paraganglioma', 'Disease', 'MESH:C531777', (26, 65)) ('paraganglioma', 'Phenotype', 'HP:0002668', (52, 65)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', '6390', (210, 214)) ('SDHB', 'Gene', (210, 214)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (35, 51)) 62912 16405730 To detect SDHB variants, mismatch PCR primers were designed and appropriate restriction enzymes were selected using the PIRA PCR software (Table 1). ('variants', 'Var', (15, 23)) ('SDHB', 'Gene', (10, 14)) ('SDHB', 'Gene', '6390', (10, 14)) 62922 16405730 This patient was described briefly in a previous report that examined SDH activity in paraganglioma, using the former mutation nomenclature of IVS4+1G>A. ('paraganglioma', 'Disease', 'MESH:D010235', (86, 99)) ('patient', 'Species', '9606', (5, 12)) ('IVS4+1G>A', 'Var', (143, 152)) ('SDH', 'Gene', '6390', (70, 73)) ('paraganglioma', 'Phenotype', 'HP:0002668', (86, 99)) ('SDH', 'Gene', (70, 73)) ('paraganglioma', 'Disease', (86, 99)) ('IVS4+1G>A', 'Mutation', 'c.IVS4+1G>A', (143, 152)) 62924 16405730 The splice site mutation in intron 4 abolishes the consensus splice donor sequence and thus may result in splicing abnormalities. ('mutation', 'Var', (16, 24)) ('abolishes', 'NegReg', (37, 46)) ('splicing abnormalities', 'MPA', (106, 128)) ('consensus splice donor sequence', 'MPA', (51, 82)) ('donor', 'Species', '9606', (68, 73)) ('result in', 'Reg', (96, 105)) 62927 16405730 As these patients are all of ethnic Dutch origin and are apparently unrelated, this mutation may represent a SDHB founder mutation in The Netherlands. ('patients', 'Species', '9606', (9, 17)) ('SDHB', 'Gene', (109, 113)) ('SDHB', 'Gene', '6390', (109, 113)) ('mutation', 'Var', (84, 92)) 62928 16405730 All sporadic patients were also analyzed for mutations in the six exons of SDHC. ('SDHC', 'Gene', '6391', (75, 79)) ('SDHC', 'Gene', (75, 79)) ('mutations', 'Var', (45, 54)) ('patients', 'Species', '9606', (13, 21)) 62931 16405730 A transition of C to T at base pair 214 in exon 4, resulted in the missense mutation of a highly conserved arginine residue (p.Arg72Cys), located in the putative quinone-binding site of complex II. ('p.Arg72Cys', 'Mutation', 'rs756676111', (125, 135)) ('p.Arg72Cys', 'Var', (125, 135)) ('C to T at base pair 214', 'Mutation', 'rs756676111', (16, 39)) ('missense mutation', 'Var', (67, 84)) ('arginine', 'Chemical', 'MESH:D001120', (107, 115)) ('quinone', 'Chemical', 'MESH:C004532', (162, 169)) ('resulted in', 'Reg', (51, 62)) 62934 16405730 The functionality of all missense mutations should be interpreted cautiously, and particularly in a case such as this as this is only the second report of a missense mutation of SDHC and the patient presented without a family history. ('SDHC', 'Gene', (178, 182)) ('missense mutation', 'Var', (157, 174)) ('SDHC', 'Gene', '6391', (178, 182)) ('patient', 'Species', '9606', (191, 198)) 62941 16405730 Both patients were found to carry a germline nonsense mutation of SDHB, c.343C>T (p.Arg115X) which leads to a truncation of the protein at under half its normal length of 280 amino acids. ('SDHB', 'Gene', (66, 70)) ('c.343C>T', 'Mutation', 'rs751000085', (72, 80)) ('leads to', 'Reg', (99, 107)) ('patients', 'Species', '9606', (5, 13)) ('c.343C>T', 'Var', (72, 80)) ('protein', 'Protein', (128, 135)) ('p.Arg115X', 'Mutation', 'rs751000085', (82, 91)) ('SDHB', 'Gene', '6390', (66, 70)) ('truncation', 'MPA', (110, 120)) 62946 16405730 Analysis of DNA from the index patient revealed a missense mutation c. 653G>C (p.Trp218Ser) in exon 7 of SDHB. ('653G>C', 'SUBSTITUTION', 'None', (71, 77)) ('SDHB', 'Gene', '6390', (105, 109)) ('p.Trp218Ser', 'Mutation', 'p.W218S', (79, 90)) ('SDHB', 'Gene', (105, 109)) ('653G>C', 'Var', (71, 77)) ('patient', 'Species', '9606', (31, 38)) 62947 16405730 This missense change affects an amino acid that is conserved in both mammals and in D. melanogaster, C. elegans, S. cerevisiae and A. thaliana. ('D. melanogaster', 'Species', '7227', (84, 99)) ('affects', 'Reg', (21, 28)) ('missense change', 'Var', (5, 20)) ('C. elegans', 'Species', '6239', (101, 111)) ('A. thaliana', 'Species', '3702', (131, 142)) ('S. cerevisiae', 'Species', '4932', (113, 126)) 62961 16405730 The index patient was found to carry a c.141G>A germline variant of SDHB resulting in a stop codon at codon 47 (p.Trp47X). ('c.141G>A', 'Mutation', 'rs1060503762', (39, 47)) ('c.141G>A', 'Var', (39, 47)) ('p.Trp47X', 'Mutation', 'rs1060503762', (112, 120)) ('SDHB', 'Gene', '6390', (68, 72)) ('patient', 'Species', '9606', (10, 17)) ('SDHB', 'Gene', (68, 72)) 62964 16405730 FGT57.6, a male of Pakistani descent, presented with a retroperitoneal paraganglioma, and had three male relatives (from a large extended family) with similar clinical profiles. ('retroperitoneal paraganglioma', 'Disease', (55, 84)) ('retroperitoneal paraganglioma', 'Phenotype', 'HP:0006729', (55, 84)) ('FGT57.6', 'Var', (0, 7)) ('retroperitoneal paraganglioma', 'Disease', 'MESH:D012186', (55, 84)) ('paraganglioma', 'Phenotype', 'HP:0002668', (71, 84)) 62974 16405730 The index case and his nephew were available for testing and both were found to be carrying a missense variant of SDHB, c.281G>A, resulting in the substitution of arginine for lysine at codon 94 (p.Arg94Lys). ('arginine for lysine at codon 94', 'Mutation', 'p.K94R', (163, 194)) ('SDHB', 'Gene', '6390', (114, 118)) ('SDHB', 'Gene', (114, 118)) ('substitution', 'Reg', (147, 159)) ('c.281G>A', 'Var', (120, 128)) ('p.Arg94Lys', 'Mutation', 'rs761381025', (196, 206)) ('c.281G>A', 'Mutation', 'rs761381025', (120, 128)) ('p.Arg94Lys', 'Var', (196, 206)) 62975 16405730 Arginine 94 is highly conserved and adjacent to a cysteine that constitutes one of the highly conserved cysteine regions that are the putative non-heme iron-sulfur clusters of SDHB. ('SDHB', 'Gene', '6390', (176, 180)) ('SDHB', 'Gene', (176, 180)) ('cysteine', 'Chemical', 'MESH:D003545', (104, 112)) ('Arginine', 'Chemical', 'MESH:D001120', (0, 8)) ('cysteine', 'Chemical', 'MESH:D003545', (50, 58)) ('heme', 'Chemical', 'MESH:D006418', (147, 151)) ('iron-sulfur', 'Chemical', '-', (152, 163)) ('Arginine 94', 'Var', (0, 11)) 62982 16405730 The index patient was found to carry a previously described mutation in exon 2 of SDHB, c.136C>T, p.Arg46X. ('SDHB', 'Gene', '6390', (82, 86)) ('patient', 'Species', '9606', (10, 17)) ('p.Arg46X', 'Var', (98, 106)) ('SDHB', 'Gene', (82, 86)) ('c.136C>T', 'Var', (88, 96)) ('p.Arg46X', 'Mutation', 'rs74315370', (98, 106)) ('c.136C>T', 'Mutation', 'rs74315370', (88, 96)) 62984 16405730 Including our previous results, we have screened a total of 95 sporadic head and neck paraganglioma cases for germline mutations of SDH genes and found 24 (25%) in SDHD, 2 (2%) in SDHB and 1 (1%) in SDHC (total = 28%). ('neck paraganglioma', 'Disease', (81, 99)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (72, 99)) ('SDHB', 'Gene', '6390', (180, 184)) ('SDH', 'Gene', '6390', (199, 202)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (81, 99)) ('paraganglioma', 'Phenotype', 'HP:0002668', (86, 99)) ('SDHC', 'Gene', '6391', (199, 203)) ('SDH', 'Gene', '6390', (164, 167)) ('mutations', 'Var', (119, 128)) ('SDHB', 'Gene', (180, 184)) ('SDH', 'Gene', '6390', (180, 183)) ('SDH', 'Gene', (199, 202)) ('SDH', 'Gene', '6390', (132, 135)) ('SDHD', 'Gene', '6392', (164, 168)) ('SDH', 'Gene', (164, 167)) ('SDHC', 'Gene', (199, 203)) ('SDHD', 'Gene', (164, 168)) ('SDH', 'Gene', (132, 135)) ('SDH', 'Gene', (180, 183)) 62985 16405730 Further studies will be required to discern whether the remaining cases can be explained by mutations of SDH genes not currently detectable with the techniques used or whether these are true sporadic cases, not attributable to germline mutations of one of the SDH genes. ('SDH', 'Gene', (105, 108)) ('SDH', 'Gene', '6390', (105, 108)) ('mutations', 'Var', (92, 101)) ('SDH', 'Gene', '6390', (260, 263)) ('SDH', 'Gene', (260, 263)) 62987 16405730 This seems particularly likely in the case of the very common SDHD mutation Asp92Tyr (D92Y) which accounts for 19 of the 24 sporadic SDHD cases, but may also explain the prevalence of the c.423+1G>A SDHB mutation. ('c.423+1G>A', 'Var', (188, 198)) ('c.423+1G>A', 'Mutation', 'rs398122805', (188, 198)) ('SDHD', 'Gene', '6392', (133, 137)) ('SDHD', 'Gene', (133, 137)) ('Asp92Tyr', 'Var', (76, 84)) ('Asp92Tyr', 'SUBSTITUTION', 'None', (76, 84)) ('SDHD', 'Gene', '6392', (62, 66)) ('SDHB', 'Gene', '6390', (199, 203)) ('SDHB', 'Gene', (199, 203)) ('SDHD', 'Gene', (62, 66)) ('D92Y', 'Mutation', 'rs80338845', (86, 90)) 62988 16405730 Previous studies of mutations of SDH genes related to sporadic head and neck paraganglioma have examined SDHB, C, and D together or SDHD only. ('SDH', 'Gene', (105, 108)) ('SDH', 'Gene', (33, 36)) ('SDHD', 'Gene', (132, 136)) ('SDHB', 'Gene', '6390', (105, 109)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (72, 90)) ('paraganglioma', 'Phenotype', 'HP:0002668', (77, 90)) ('related', 'Reg', (43, 50)) ('SDHB', 'Gene', (105, 109)) ('SDH', 'Gene', '6390', (132, 135)) ('SDH', 'Gene', '6390', (105, 108)) ('SDH', 'Gene', '6390', (33, 36)) ('neck paraganglioma', 'Disease', (72, 90)) ('SDH', 'Gene', (132, 135)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (63, 90)) ('SDHD', 'Gene', '6392', (132, 136)) ('mutations', 'Var', (20, 29)) 62989 16405730 The four studies examining all three genes included 103 cases and found 3 mutations of SDHB, 0 mutations of SDHC and 7 mutations of SDHD. ('SDHD', 'Gene', (132, 136)) ('SDHB', 'Gene', '6390', (87, 91)) ('mutations', 'Var', (74, 83)) ('SDHC', 'Gene', (108, 112)) ('SDHC', 'Gene', '6391', (108, 112)) ('SDHD', 'Gene', '6392', (132, 136)) ('SDHB', 'Gene', (87, 91)) 62990 16405730 Including the current study, a total of 5 mutations of SDHB have been found in 141 cases (3.5%), and 1 of SDHC (0.7%). ('SDHB', 'Gene', (55, 59)) ('SDHC', 'Gene', (106, 110)) ('SDHC', 'Gene', '6391', (106, 110)) ('SDHB', 'Gene', '6390', (55, 59)) ('found', 'Reg', (70, 75)) ('mutations', 'Var', (42, 51)) 62991 16405730 The two studies that looked only at SDHD were both conducted in The Netherlands and found 33 mutations in 93 Dutch cases (35%). ('SDHD', 'Gene', '6392', (36, 40)) ('mutations', 'Var', (93, 102)) ('SDHD', 'Gene', (36, 40)) ('Dutch', 'Disease', (109, 114)) 62992 16405730 The higher incidence in The Netherlands is largely attributable to the common Dutch mutations Asp92Tyr (D92Y), Leu95Pro (L95P) and Leu139Pro (L139P). ('Leu139Pro', 'Var', (131, 140)) ('Leu139Pro', 'SUBSTITUTION', 'None', (131, 140)) ('L95P', 'Mutation', 'rs80338846', (121, 125)) ('D92Y', 'Mutation', 'rs80338845', (104, 108)) ('Asp92Tyr', 'SUBSTITUTION', 'None', (94, 102)) ('Leu95Pro', 'SUBSTITUTION', 'None', (111, 119)) ('L139P', 'Mutation', 'rs80338847', (142, 147)) ('Asp92Tyr', 'Var', (94, 102)) ('Leu95Pro', 'Var', (111, 119)) 62993 16405730 While this study was conducted with the aim of identifying the incidence of germline mutations of SDHB and SDHC in paraganglioma/pheochromocytoma, it is worth remembering that we did not examine DNA from tumors, so no conclusion can be drawn on the incidence of somatic mutations of SDHB and SDHC in paraganglioma. ('paraganglioma', 'Disease', 'MESH:D010235', (300, 313)) ('SDHC', 'Gene', (292, 296)) ('tumors', 'Phenotype', 'HP:0002664', (204, 210)) ('paraganglioma', 'Disease', (115, 128)) ('paraganglioma', 'Disease', 'MESH:D010235', (115, 128)) ('SDHB', 'Gene', '6390', (283, 287)) ('tumor', 'Phenotype', 'HP:0002664', (204, 209)) ('paraganglioma', 'Phenotype', 'HP:0002668', (300, 313)) ('SDHC', 'Gene', (107, 111)) ('tumors', 'Disease', (204, 210)) ('SDHB', 'Gene', (283, 287)) ('SDHB', 'Gene', '6390', (98, 102)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (129, 145)) ('mutations', 'Var', (85, 94)) ('paraganglioma', 'Phenotype', 'HP:0002668', (115, 128)) ('SDHC', 'Gene', '6391', (292, 296)) ('tumors', 'Disease', 'MESH:D009369', (204, 210)) ('paraganglioma/pheochromocytoma', 'Disease', (115, 145)) ('SDHB', 'Gene', (98, 102)) ('paraganglioma', 'Disease', (300, 313)) ('SDHC', 'Gene', '6391', (107, 111)) ('paraganglioma/pheochromocytoma', 'Disease', 'MESH:D010673', (115, 145)) 62994 16405730 Previous studies that did address this question, including SDHD, found no evidence of somatic SDH mutations playing a role in paraganglioma, with the exception of Gimm et al who reported a single case with a somatic mutation of SDHD, Pro81Leu. ('SDH', 'Gene', '6390', (94, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (126, 139)) ('SDHD', 'Gene', (229, 233)) ('SDHD', 'Gene', '6392', (229, 233)) ('Pro81Leu', 'Mutation', 'rs80338844', (235, 243)) ('SDH', 'Gene', '6390', (229, 232)) ('paraganglioma', 'Disease', (126, 139)) ('mutations', 'Var', (98, 107)) ('SDH', 'Gene', (59, 62)) ('SDHD', 'Gene', '6392', (59, 63)) ('SDH', 'Gene', (94, 97)) ('paraganglioma', 'Disease', 'MESH:D010235', (126, 139)) ('SDHD', 'Gene', (59, 63)) ('SDH', 'Gene', (229, 232)) ('SDH', 'Gene', '6390', (59, 62)) 62996 16405730 The five novel SDHB mutations described here further underline the importance of germline mutations of this gene in cases of paraganglioma and pheochromocytoma. ('SDHB', 'Gene', '6390', (15, 19)) ('paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (125, 159)) ('SDHB', 'Gene', (15, 19)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (143, 159)) ('paraganglioma', 'Phenotype', 'HP:0002668', (125, 138)) ('mutations', 'Var', (20, 29)) 62997 16405730 The striking variability in the penetrance and phenotype of SDHB mutations in several the families described illustrates the difficulty in ascertaining the family history of patients. ('patients', 'Species', '9606', (174, 182)) ('SDHB', 'Gene', '6390', (60, 64)) ('SDHB', 'Gene', (60, 64)) ('mutations', 'Var', (65, 74)) 62998 16405730 Similarly, McDonnell et al recently described a remarkable pedigree in which a single case, a young boy, led to the detection of a further 17 SDHB mutation carriers, 4 of whom were phenotypically affected. ('mutation', 'Var', (148, 156)) ('SDHB', 'Gene', (143, 147)) ('boy', 'Species', '9606', (101, 104)) ('SDHB', 'Gene', '6390', (143, 147)) 63001 16405730 Much of this increase is attributable to the recent availability of genetic testing of SDH genes. ('SDH', 'Gene', (87, 90)) ('genetic', 'Var', (68, 75)) ('SDH', 'Gene', '6390', (87, 90)) 63007 16405730 The patient carrying a SDHC mutation described in this report joins the small number of individuals with SDHC mutations reported to date, which include a family showing five cases of non-chromaffin paraganglioma and carrying a mutation that ablates the start codon ATG, (c.3G>A). ('paraganglioma', 'Disease', (198, 211)) ('SDHC', 'Gene', '6391', (105, 109)) ('SDHC', 'Gene', '6391', (23, 27)) ('mutations', 'Var', (110, 119)) ('paraganglioma', 'Disease', 'MESH:D010235', (198, 211)) ('c.3G>A', 'Mutation', 'rs587776652', (271, 277)) ('patient', 'Species', '9606', (4, 11)) ('chromaffin paraganglioma', 'Phenotype', 'HP:0002666', (187, 211)) ('mutation', 'Var', (28, 36)) ('paraganglioma', 'Phenotype', 'HP:0002668', (198, 211)) ('ablates', 'NegReg', (241, 248)) ('c.3G>A', 'Var', (271, 277)) ('SDHC', 'Gene', (105, 109)) ('SDHC', 'Gene', (23, 27)) 63009 16405730 A splice donor site mutation (IVS5+1G>A) was identified in this patient, resulting in the skipping of exon 5. ('patient', 'Species', '9606', (64, 71)) ('donor', 'Species', '9606', (9, 14)) ('skipping', 'MPA', (90, 98)) ('IVS5+1G>A', 'Mutation', 'c.IVS5+1G>A', (30, 39)) ('IVS5+1G>A', 'Var', (30, 39)) 63010 16405730 More recently Bauters et al identified a missense mutation (c.473T>C; Leu158Pro) in a case of carotid body paraganglioma, and Baysal et al described a family with head and neck paraganglioma with an 8 kb Alu-mediated SDHC deletion. ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (95, 121)) ('carotid body paraganglioma', 'Disease', (95, 121)) ('SDHC', 'Gene', (219, 223)) ('paraganglioma', 'Phenotype', 'HP:0002668', (179, 192)) ('neck paraganglioma', 'Disease', (174, 192)) ('Leu158Pro', 'Var', (71, 80)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (174, 192)) ('SDHC', 'Gene', '6391', (219, 223)) ('paraganglioma', 'Phenotype', 'HP:0002668', (108, 121)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (165, 192)) ('c.473T>C', 'Mutation', 'c.473T>C', (61, 69)) ('carotid body paraganglioma', 'Disease', 'MESH:D002345', (95, 121)) ('Leu158Pro', 'SUBSTITUTION', 'None', (71, 80)) 63012 16405730 The c.214C>T change in SDHC results in the substitution of arginine for cysteine. ('c.214C>T', 'Mutation', 'rs756676111', (4, 12)) ('SDHC', 'Gene', '6391', (23, 27)) ('cysteine', 'Chemical', 'MESH:D003545', (72, 80)) ('substitution', 'Var', (43, 55)) ('c.214C>T', 'Var', (4, 12)) ('arginine', 'Chemical', 'MESH:D001120', (59, 67)) ('results in', 'Reg', (28, 38)) ('SDHC', 'Gene', (23, 27)) 63014 16405730 Mutants of E. coli carrying a substitution of arginine 31 are unable to grow aerobically on succinate as a carbon source. ('unable', 'NegReg', (62, 68)) ('carbon', 'Chemical', 'MESH:D002244', (107, 113)) ('succinate', 'Chemical', 'MESH:D019802', (92, 101)) ('substitution', 'Var', (30, 42)) ('arginine 31', 'Var', (46, 57)) ('E. coli', 'Species', '562', (11, 18)) ('arginine', 'Chemical', 'MESH:D001120', (46, 54)) 63015 16405730 In addition, mutation of the histidine adjacent to Arginine 47 caused a marked reduction in the catalytic efficiency of quinone reduction in S. cerevisiae . ('histidine', 'Chemical', 'MESH:D006639', (29, 38)) ('catalytic efficiency', 'MPA', (96, 116)) ('mutation', 'Var', (13, 21)) ('S. cerevisiae', 'Species', '4932', (141, 154)) ('Arginine', 'Chemical', 'MESH:D001120', (51, 59)) ('Arginine 47', 'Var', (51, 62)) ('quinone', 'Chemical', 'MESH:C004532', (120, 127)) ('reduction', 'NegReg', (79, 88)) 63016 16405730 Although relatively few SDHC mutations carriers are known, totaling 15 individuals, including 4 with no other known affected family members, all affected individuals had head and neck paragangliomas, including one case of a metastatic, catecholamine-secreting carotid body tumor. ('neck paragangliomas', 'Disease', 'MESH:D010235', (179, 198)) ('SDHC', 'Gene', (24, 28)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (170, 197)) ('mutations', 'Var', (29, 38)) ('SDHC', 'Gene', '6391', (24, 28)) ('neck paragangliomas', 'Disease', (179, 198)) ('carotid body tumor', 'Phenotype', 'HP:0002668', (260, 278)) ('carotid body tumor', 'Disease', (260, 278)) ('paragangliomas', 'Phenotype', 'HP:0002668', (184, 198)) ('paraganglioma', 'Phenotype', 'HP:0002668', (184, 197)) ('catecholamine', 'Chemical', 'MESH:D002395', (236, 249)) ('tumor', 'Phenotype', 'HP:0002664', (273, 278)) ('carotid body tumor', 'Disease', 'MESH:D002345', (260, 278)) ('had', 'Reg', (166, 169)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (170, 198)) 63018 16405730 In this study we detected germline mutations of SDHB in 5% and of SDHC in 2.5% of sporadic head and neck paraganglioma cases. ('neck paraganglioma', 'Disease', 'MESH:D010235', (100, 118)) ('germline mutations', 'Var', (26, 44)) ('SDHC', 'Gene', (66, 70)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (91, 118)) ('SDHC', 'Gene', '6391', (66, 70)) ('neck paraganglioma', 'Disease', (100, 118)) ('detected', 'Reg', (17, 25)) ('SDHB', 'Gene', '6390', (48, 52)) ('paraganglioma', 'Phenotype', 'HP:0002668', (105, 118)) ('SDHB', 'Gene', (48, 52)) 63019 16405730 Including data from published studies, a total of 5 mutations of SDHB (3.5%) and 1 of SDHC (0.7%) have been reported in 141 cases. ('mutations', 'Var', (52, 61)) ('reported', 'Reg', (108, 116)) ('SDHB', 'Gene', '6390', (65, 69)) ('SDHC', 'Gene', (86, 90)) ('SDHC', 'Gene', '6391', (86, 90)) ('SDHB', 'Gene', (65, 69)) 63020 16405730 Together with our previous study of SDHD mutations we have now found 27 SDH germline mutations in 95 cases (28%) of sporadic head and neck paraganglioma, the majority of these being Dutch founder mutations of SDHD. ('SDH', 'Gene', (209, 212)) ('SDHD', 'Gene', (36, 40)) ('SDHD', 'Gene', '6392', (36, 40)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (125, 152)) ('paraganglioma', 'Phenotype', 'HP:0002668', (139, 152)) ('SDH', 'Gene', '6390', (72, 75)) ('neck paraganglioma', 'Disease', (134, 152)) ('SDH', 'Gene', '6390', (36, 39)) ('mutations', 'Var', (85, 94)) ('SDHD', 'Gene', (209, 213)) ('SDHD', 'Gene', '6392', (209, 213)) ('SDH', 'Gene', (72, 75)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (134, 152)) ('SDH', 'Gene', '6390', (209, 212)) ('SDH', 'Gene', (36, 39)) 63022 16405730 In contrast, germline mutations of SDHB were found in all cases of familial pheochromocytoma and/or paraganglioma. ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (67, 92)) ('paraganglioma', 'Disease', 'MESH:D010235', (100, 113)) ('SDHB', 'Gene', (35, 39)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (76, 92)) ('familial pheochromocytoma', 'Disease', (67, 92)) ('paraganglioma', 'Phenotype', 'HP:0002668', (100, 113)) ('germline mutations', 'Var', (13, 31)) ('paraganglioma', 'Disease', (100, 113)) ('found', 'Reg', (45, 50)) ('SDHB', 'Gene', '6390', (35, 39)) 63023 16405730 The clinical data presented illustrates the striking variability in phenotype related to SDHB mutations, even within a single family. ('SDHB', 'Gene', '6390', (89, 93)) ('SDHB', 'Gene', (89, 93)) ('mutations', 'Var', (94, 103)) 63024 16405730 The mutation of SDHC reported here is only the fifth to be described, extending our knowledge of the phenotype related to mutations of this gene The author(s) declare that they have no competing interests JPB collected, edited and analysed the data, co-designed the study, and wrote the manuscript. ('SDHC', 'Gene', (16, 20)) ('mutations', 'Var', (122, 131)) ('mutation', 'Var', (4, 12)) ('SDHC', 'Gene', '6391', (16, 20)) 63077 32759464 2), which resulted in SDH subunits B (SDHB) mutation in one patient. ('patient', 'Species', '9606', (60, 67)) ('mutation', 'Var', (44, 52)) ('SDHB', 'Gene', '6390', (38, 42)) ('SDH subunits B', 'Gene', '6390', (22, 36)) ('resulted in', 'Reg', (10, 21)) ('SDHB', 'Gene', (38, 42)) ('SDH subunits B', 'Gene', (22, 36)) 63090 32759464 For the treatment of metastatic paraganglioma of the younger patient, targeted radiation therapy with 131I-MIBG (metaiodobenzylguanidine) was performed twice. ('paraganglioma', 'Phenotype', 'HP:0002668', (32, 45)) ('paraganglioma', 'Disease', (32, 45)) ('metaiodobenzylguanidine', 'Chemical', 'MESH:D019797', (113, 136)) ('patient', 'Species', '9606', (61, 68)) ('131I-MIBG', 'Var', (102, 111)) ('MIBG', 'Chemical', 'MESH:D019797', (107, 111)) ('paraganglioma', 'Disease', 'MESH:D010235', (32, 45)) 63097 32759464 Her gene study revealed SDHB mutation, thus familial evaluation was recommended. ('revealed', 'Reg', (15, 23)) ('mutation', 'Var', (29, 37)) ('SDHB', 'Gene', (24, 28)) ('SDHB', 'Gene', '6390', (24, 28)) 63101 32759464 An etiology of paraganglioma has not been well known, however, exposure to chronic hypoxia or germ line mutation of SDH subunits are accepted as one of the etiology. ('paraganglioma', 'Disease', (15, 28)) ('hypoxia', 'Disease', 'MESH:D000860', (83, 90)) ('SDH', 'Gene', (116, 119)) ('paraganglioma', 'Disease', 'MESH:D010235', (15, 28)) ('mutation', 'Var', (104, 112)) ('hypoxia', 'Disease', (83, 90)) ('paraganglioma', 'Phenotype', 'HP:0002668', (15, 28)) ('SDH', 'Gene', '6390', (116, 119)) 63102 32759464 The mutation of SDH is known to activate chronic hypoxia pathways in the cells then induces paraganglioma from the carotid body. ('paraganglioma', 'Disease', (92, 105)) ('mutation', 'Var', (4, 12)) ('SDH', 'Gene', '6390', (16, 19)) ('hypoxia', 'Disease', 'MESH:D000860', (49, 56)) ('paraganglioma', 'Disease', 'MESH:D010235', (92, 105)) ('activate', 'PosReg', (32, 40)) ('hypoxia', 'Disease', (49, 56)) ('SDH', 'Gene', (16, 19)) ('paraganglioma', 'Phenotype', 'HP:0002668', (92, 105)) ('induces', 'Reg', (84, 91)) 63143 32759464 Genetic component also has been known as an important risk factor for malignant paraganglioma; SDHB mutation is associated with metastatic disease at an early age. ('associated with', 'Reg', (112, 127)) ('malignant paraganglioma', 'Disease', (70, 93)) ('SDHB', 'Gene', '6390', (95, 99)) ('mutation', 'Var', (100, 108)) ('malignant paraganglioma', 'Disease', 'MESH:C565335', (70, 93)) ('paraganglioma', 'Phenotype', 'HP:0002668', (80, 93)) ('SDHB', 'Gene', (95, 99)) ('metastatic disease', 'Disease', (128, 146)) 63159 31597347 They can be separated into three different molecular clusters depending on their underlying gene mutations in any of the at least 20 known susceptibility genes: The pseudohypoxia-associated cluster 1, the kinase signaling-associated cluster 2, and the Wnt signaling-associated cluster 3. ('hypoxia', 'Disease', (171, 178)) ('mutations', 'Var', (97, 106)) ('hypoxia', 'Disease', 'MESH:D000860', (171, 178)) 63167 31597347 Patients with known mutations in susceptibility genes tend to develop PCC/PGL at a younger age, compared with patients with sporadic tumors, in part because of biochemical and/or anatomic surveillance. ('tumors', 'Phenotype', 'HP:0002664', (133, 139)) ('sporadic tumors', 'Disease', (124, 139)) ('patients', 'Species', '9606', (110, 118)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('Patients', 'Species', '9606', (0, 8)) ('PCC/PGL', 'Disease', 'MESH:D010673', (70, 77)) ('sporadic tumors', 'Disease', 'MESH:D020821', (124, 139)) ('PCC/PGL', 'Disease', (70, 77)) ('mutations', 'Var', (20, 29)) 63177 31597347 About 10% of PCCs and a significantly higher proportion:35-40%:of PGLs are metastatic, especially those due to mutations of the succinate dehydrogenase A/B (SDHA/B) gene. ('mutations', 'Var', (111, 120)) ('SDHA', 'Gene', (157, 161)) ('PGLs', 'Disease', (66, 70)) ('PCC', 'Gene', (13, 16)) ('succinate', 'Chemical', 'MESH:D013386', (128, 137)) ('due to', 'Reg', (104, 110)) ('metastatic', 'CPA', (75, 85)) ('SDHA', 'Gene', '6389', (157, 161)) ('PCC', 'Gene', '1421', (13, 16)) 63183 31597347 In the most recent American Joint Committee of Cancer Staging (AJCC) guidelines a novel TNM staging for PCC/PGL was introduced, and clinical relevance has recently been validated retrospectively with PCCs and sympathetic PGLs in stage III-IV (regional lymph node metastases or invasion into surrounding tissue or distant metastases) being associated with increased PASS/GAPP scores and increased mortality, as well as aberrations in the pseudo-hypoxia pathway cluster. ('increased', 'PosReg', (355, 364)) ('increased', 'PosReg', (386, 395)) ('metastases', 'Disease', (321, 331)) ('metastases', 'Disease', 'MESH:D009362', (263, 273)) ('PCC/PGL', 'Disease', 'MESH:D010673', (104, 111)) ('metastases', 'Disease', (263, 273)) ('PCC', 'Gene', (104, 107)) ('PASS/GAPP scores', 'MPA', (365, 381)) ('aberrations', 'Var', (418, 429)) ('PCC', 'Gene', (200, 203)) ('PCC', 'Gene', '1421', (104, 107)) ('hypoxia', 'Disease', (444, 451)) ('Cancer', 'Phenotype', 'HP:0002664', (47, 53)) ('PCC', 'Gene', '1421', (200, 203)) ('TNM', 'Gene', '10178', (88, 91)) ('PCC/PGL', 'Disease', (104, 111)) ('hypoxia', 'Disease', 'MESH:D000860', (444, 451)) ('mortality', 'MPA', (396, 405)) ('TNM', 'Gene', (88, 91)) ('metastases', 'Disease', 'MESH:D009362', (321, 331)) 63184 31597347 These include size (>=5-6 cm), extra-adrenal location of the primary tumor, noradrenergic/dopaminergic biochemical phenotype, mutations of the succinate dehydrogenase A and B (SDHA/B) genes, tumor multiplicity/recurrence, and age at first presentation (<20 years). ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('SDHA', 'Gene', '6389', (176, 180)) ('tumor', 'Disease', 'MESH:D009369', (191, 196)) ('tumor', 'Disease', (69, 74)) ('dopamine', 'Chemical', 'MESH:D004298', (90, 98)) ('tumor multiplicity', 'Disease', 'MESH:D009369', (191, 209)) ('noradrenergic/dopaminergic', 'MPA', (76, 102)) ('SDHA', 'Gene', (176, 180)) ('tumor', 'Phenotype', 'HP:0002664', (191, 196)) ('tumor', 'Disease', (191, 196)) ('mutations', 'Var', (126, 135)) ('tumor multiplicity', 'Disease', (191, 209)) ('succinate', 'Chemical', 'MESH:D013386', (143, 152)) ('tumor', 'Disease', 'MESH:D009369', (69, 74)) 63189 31597347 Cluster 1 is called pseudohypoxic since it mimics cellular hypoxia: The Krebs cycle is disrupted due to mutations in several genes (SDHA[AF2]/B/C/D, FH, MDH2, and IDH) and, therefore, the Krebs cycle and oxidative phosphorylation are impaired resulting in increased cellular glycolysis. ('cellular glycolysis', 'MPA', (266, 285)) ('mutations', 'Var', (104, 113)) ('Krebs', 'Enzyme', (72, 77)) ('Krebs cycle', 'MPA', (188, 199)) ('disrupted', 'NegReg', (87, 96)) ('FH', 'Gene', '2271', (149, 151)) ('IDH', 'Gene', (163, 166)) ('oxidative phosphorylation', 'MPA', (204, 229)) ('SDHA', 'Gene', (132, 136)) ('impaired', 'NegReg', (234, 242)) ('IDH', 'Gene', '3417', (163, 166)) ('hypoxia', 'Disease', (59, 66)) ('MDH2', 'Gene', '4191', (153, 157)) ('hypoxia', 'Disease', 'MESH:D000860', (59, 66)) ('MDH2', 'Gene', (153, 157)) ('increased', 'PosReg', (256, 265)) ('SDHA', 'Gene', '6389', (132, 136)) 63191 31597347 Inactivation of PHD1/2 results in less HIF-alpha hydroxylation and less HIF-alpha ubiquitination/degradation (HIF-alpha is stabilized), which is also VHL-dependent; thus, VHL mutations also lead to HIF-alpha stabilization and accumulation. ('accumulation', 'PosReg', (226, 238)) ('PHD1', 'Gene', '112398', (16, 20)) ('HIF-alpha stabilization', 'MPA', (198, 221)) ('HIF-alpha hydroxylation', 'MPA', (39, 62)) ('HIF-alpha ubiquitination/degradation', 'MPA', (72, 108)) ('less', 'NegReg', (67, 71)) ('VHL', 'Gene', (150, 153)) ('VHL', 'Gene', (171, 174)) ('PHD1', 'Gene', (16, 20)) ('lead', 'Reg', (190, 194)) ('VHL', 'Gene', '7428', (150, 153)) ('less', 'NegReg', (34, 38)) ('mutations', 'Var', (175, 184)) ('VHL', 'Gene', '7428', (171, 174)) ('Inactivation', 'Var', (0, 12)) 63192 31597347 Via HIF-alpha stabilization and accumulation, cluster 1 mutations promote angiogenesis (VEGF/PDGF transcription amongst others), tumor invasion, metastasis and other cellular processes. ('mutations', 'Var', (56, 65)) ('tumor invasion', 'Disease', 'MESH:D009361', (129, 143)) ('metastasis', 'CPA', (145, 155)) ('VEGF', 'Gene', (88, 92)) ('angiogenesis', 'CPA', (74, 86)) ('promote', 'PosReg', (66, 73)) ('HIF-alpha', 'Protein', (4, 13)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('cluster 1', 'Gene', (46, 55)) ('tumor invasion', 'Disease', (129, 143)) ('VEGF', 'Gene', '7422', (88, 92)) 63193 31597347 PCCs/PGLs resulting especially from mutations in Krebs cycle enzyme SDHx subunits are often multiple, aggressive, metastatic, and have a poorer prognosis, compared to PCCs/PGLs bearing other susceptibility gene mutations, especially those related to cluster 2. ('PCCs/PGLs', 'Disease', 'MESH:D010673', (0, 9)) ('PCCs/PGLs', 'Disease', (0, 9)) ('PCCs/PGLs', 'Disease', 'MESH:D010673', (167, 176)) ('SDHx', 'Gene', (68, 72)) ('mutations', 'Var', (36, 45)) ('PCCs/PGLs', 'Disease', (167, 176)) 63194 31597347 Cluster 1 mutations can be subdivided in pseudohypoxic Krebs cycle-related and pseudohypoxia VHL/EPAS1-related PCCs/PGLs (see above). ('pseudohypoxia VHL', 'Disease', (79, 96)) ('PCCs/PGLs', 'Disease', (111, 120)) ('PCCs/PGLs', 'Disease', 'MESH:D010673', (111, 120)) ('pseudohypoxia VHL', 'Disease', 'MESH:D006623', (79, 96)) ('EPAS1', 'Gene', '2034', (97, 102)) ('mutations', 'Var', (10, 19)) ('EPAS1', 'Gene', (97, 102)) ('pseudohypoxic Krebs cycle-related', 'Disease', (41, 74)) 63197 31597347 These mutations lead to activation of the phosphatidylinositol-3-kinase (PI3K)/AKT, mammalian target of rapamycin (mTORC1)/p70S6 kinase (p70S6K), and RAS/RAF/ERK signaling pathway and promote cell proliferation, survival, cancer development, and angiogenesis. ('mTORC1', 'Gene', (115, 121)) ('AKT', 'Gene', (79, 82)) ('p70S6K', 'Gene', (137, 143)) ('mTORC1', 'Gene', '382056', (115, 121)) ('promote', 'PosReg', (184, 191)) ('mammalian target of rapamycin', 'Gene', '2475', (84, 113)) ('cell proliferation', 'CPA', (192, 210)) ('angiogenesis', 'CPA', (246, 258)) ('survival', 'CPA', (212, 220)) ('cancer', 'Disease', (222, 228)) ('AKT', 'Gene', '207', (79, 82)) ('cancer', 'Phenotype', 'HP:0002664', (222, 228)) ('activation', 'PosReg', (24, 34)) ('mutations', 'Var', (6, 15)) ('mammalian target of rapamycin', 'Gene', (84, 113)) ('p70S6K', 'Gene', '6198', (137, 143)) ('RAF', 'Gene', '22882', (154, 157)) ('ERK', 'Gene', (158, 161)) ('phosphatidylinositol-3-kinase', 'Gene', '5295', (42, 71)) ('cancer', 'Disease', 'MESH:D009369', (222, 228)) ('ERK', 'Gene', '2048', (158, 161)) ('RAF', 'Gene', (154, 157)) ('phosphatidylinositol-3-kinase', 'Gene', (42, 71)) 63198 31597347 Most of the cluster 2 mutations lead to an adrenergic biochemical phenotype with production of adrenalin (measured metabolite: metanephrine) +/- noradrenalin (measured metabolite: normetanephrine). ('lead to', 'Reg', (32, 39)) ('normetanephrine', 'Chemical', 'MESH:D009647', (180, 195)) ('adrenergic biochemical phenotype', 'MPA', (43, 75)) ('adrenalin', 'MPA', (95, 104)) ('metanephrine', 'Chemical', 'MESH:D008676', (183, 195)) ('cluster 2', 'Gene', (12, 21)) ('mutations', 'Var', (22, 31)) ('noradrenalin', 'Chemical', 'None', (145, 157)) ('metanephrine', 'Chemical', 'MESH:D008676', (127, 139)) 63199 31597347 Max mutations are most likely to show an intermediate biochemical phenotype. ('mutations', 'Var', (4, 13)) ('Max', 'Gene', '4149', (0, 3)) ('Max', 'Gene', (0, 3)) 63201 31597347 MAML3 mutations lead to overactivation of Wnt and Hedgehog signaling. ('overactivation', 'PosReg', (24, 38)) ('MAML3', 'Gene', '55534', (0, 5)) ('MAML3', 'Gene', (0, 5)) ('mutations', 'Var', (6, 15)) 63202 31597347 These tumors strongly express chromogranin A. CSDE1 mutations lead to over-activation of beta-catenin, a target of Wnt signaling, and favor tumor proliferation, invasion, and metastases. ('over-activation', 'PosReg', (70, 85)) ('tumor', 'Disease', 'MESH:D009369', (140, 145)) ('favor', 'PosReg', (134, 139)) ('chromogranin A', 'Gene', (30, 44)) ('metastases', 'Disease', 'MESH:D009362', (175, 185)) ('beta-catenin', 'Gene', (89, 101)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('CSDE1', 'Gene', (46, 51)) ('beta-catenin', 'Gene', '1499', (89, 101)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('chromogranin A', 'Gene', '1113', (30, 44)) ('metastases', 'Disease', (175, 185)) ('invasion', 'CPA', (161, 169)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('CSDE1', 'Gene', '7812', (46, 51)) ('tumors', 'Disease', (6, 12)) ('tumor', 'Disease', (6, 11)) ('mutations', 'Var', (52, 61)) ('tumor', 'Disease', 'MESH:D009369', (6, 11)) ('tumors', 'Disease', 'MESH:D009369', (6, 12)) ('tumor', 'Disease', (140, 145)) 63207 31597347 Somatic tumor mutations may indeed also influence prognosis, since different somatic mutations correlate with different metastatic risks in a similar manner as germline mutations do (Table 1), although, of course, this is still the subject of ongoing research. ('prognosis', 'CPA', (50, 59)) ('influence', 'Reg', (40, 49)) ('tumor', 'Disease', 'MESH:D009369', (8, 13)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('metastatic', 'CPA', (120, 130)) ('tumor', 'Disease', (8, 13)) ('mutations', 'Var', (14, 23)) 63208 31597347 Moreover, a personalized molecular-targeted therapy approach could result from somatic mutations such as RET, NF1, HRAS, MAX, TMEM127, or those of defective pseudohypoxia signaling, much as it does from the molecular testing in other cancer entities such as differentiated thyroid carcinoma, bronchial carcinoma, or breast cancer. ('NF1', 'Gene', '4763', (110, 113)) ('cancer', 'Phenotype', 'HP:0002664', (234, 240)) ('bronchial carcinoma', 'Disease', 'MESH:D002283', (292, 311)) ('defective pseudohypoxia signaling', 'Disease', 'MESH:C566796', (147, 180)) ('breast cancer', 'Phenotype', 'HP:0003002', (316, 329)) ('mutations', 'Var', (87, 96)) ('RET', 'Gene', (105, 108)) ('NF1', 'Gene', (110, 113)) ('cancer', 'Disease', 'MESH:D009369', (323, 329)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (273, 290)) ('carcinoma', 'Phenotype', 'HP:0030731', (302, 311)) ('HRAS', 'Gene', '3265', (115, 119)) ('MAX', 'Gene', (121, 124)) ('breast cancer', 'Disease', 'MESH:D001943', (316, 329)) ('HRAS', 'Gene', (115, 119)) ('cancer', 'Disease', 'MESH:D009369', (234, 240)) ('breast cancer', 'Disease', (316, 329)) ('defective pseudohypoxia signaling', 'Disease', (147, 180)) ('thyroid carcinoma', 'Disease', (273, 290)) ('TMEM127', 'Gene', (126, 133)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (273, 290)) ('result from', 'Reg', (67, 78)) ('TMEM127', 'Gene', '55654', (126, 133)) ('cancer', 'Disease', (323, 329)) ('bronchial carcinoma', 'Disease', (292, 311)) ('MAX', 'Gene', '4149', (121, 124)) ('RET', 'Gene', '5979', (105, 108)) ('cancer', 'Phenotype', 'HP:0002664', (323, 329)) ('carcinoma', 'Phenotype', 'HP:0030731', (281, 290)) ('cancer', 'Disease', (234, 240)) 63218 31597347 Moreover, a substantial proportion of PCCs/PGLs in SDHx mutation carriers also appear to show some additional deficiency in the enzyme dopamine-beta-hydroxylase, which catalyzes the final step in catecholamine synthesis:the conversion of dopamine to noradrenalin; patients with such tumors show increased production of the dopamine metabolite 3-methoxytyramine. ('dopamine-beta-hydroxylase', 'Gene', (135, 160)) ('SDHx', 'Gene', (51, 55)) ('tumors', 'Phenotype', 'HP:0002664', (283, 289)) ('catecholamine', 'Chemical', 'MESH:D002395', (196, 209)) ('dopamine', 'Chemical', 'MESH:D004298', (238, 246)) ('tumor', 'Phenotype', 'HP:0002664', (283, 288)) ('tumors', 'Disease', (283, 289)) ('conversion', 'MPA', (224, 234)) ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (343, 360)) ('PCCs/PGLs', 'Disease', 'MESH:D010673', (38, 47)) ('dopamine-beta-hydroxylase', 'Gene', '1621', (135, 160)) ('dopamine', 'Chemical', 'MESH:D004298', (135, 143)) ('patients', 'Species', '9606', (264, 272)) ('tumors', 'Disease', 'MESH:D009369', (283, 289)) ('mutation', 'Var', (56, 64)) ('increased', 'PosReg', (295, 304)) ('PCCs/PGLs', 'Disease', (38, 47)) ('deficiency', 'NegReg', (110, 120)) ('noradrenalin', 'Chemical', 'None', (250, 262)) ('dopamine', 'Chemical', 'MESH:D004298', (323, 331)) 63221 31597347 Moreover, SDHx mutation carriers often show reduced synthesis and secretion of normetanephrine and in rare cases lack the initial rate-limiting enzyme of catecholamine synthesis (tyrosine hydroxylase); such cases may be termed non-functional or biochemically silent. ('mutation', 'Var', (15, 23)) ('catecholamine', 'Chemical', 'MESH:D002395', (154, 167)) ('secretion of normetanephrine', 'MPA', (66, 94)) ('synthesis', 'MPA', (52, 61)) ('tyrosine', 'Chemical', 'None', (179, 187)) ('SDHx', 'Gene', (10, 14)) ('reduced', 'NegReg', (44, 51)) ('normetanephrine', 'Chemical', 'MESH:D009647', (79, 94)) ('lack', 'NegReg', (113, 117)) 63222 31597347 SDHx mutation carriers can therefore be diagnosed preferentially by normetanephrine and 3-methoxytyramine while, in cases of silent phenotypes, circulating chromogranin A may be a useful marker. ('chromogranin A', 'Gene', '1113', (156, 170)) ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (88, 105)) ('normetanephrine', 'MPA', (68, 83)) ('3-methoxytyramine', 'MPA', (88, 105)) ('normetanephrine', 'Chemical', 'MESH:D009647', (68, 83)) ('chromogranin A', 'Gene', (156, 170)) ('SDHx', 'Gene', (0, 4)) ('mutation', 'Var', (5, 13)) 63227 31597347 Patients with chromaffin cell tumors due to cluster 2 mutations are usually diagnosed by elevations in both normetanephrine and metanephrine or only metanephrine. ('tumors', 'Disease', (30, 36)) ('tumors', 'Disease', 'MESH:D009369', (30, 36)) ('tumors', 'Phenotype', 'HP:0002664', (30, 36)) ('chromaffin cell tumors', 'Phenotype', 'HP:0002666', (14, 36)) ('elevations', 'PosReg', (89, 99)) ('mutations', 'Var', (54, 63)) ('metanephrine', 'Chemical', 'MESH:D008676', (111, 123)) ('metanephrine', 'Chemical', 'MESH:D008676', (128, 140)) ('metanephrine', 'Chemical', 'MESH:D008676', (149, 161)) ('Patients', 'Species', '9606', (0, 8)) ('metanephrine', 'MPA', (128, 140)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('normetanephrine', 'MPA', (108, 123)) ('cluster 2', 'Gene', (44, 53)) ('normetanephrine', 'Chemical', 'MESH:D009647', (108, 123)) 63229 31597347 Especially in the case of a history/suspicion of PGLs, metastatic disease or in SDHx mutation carriers, additional assessments of plasma 3-methoxytyramine (but not urinary 3-methoxytyramine) are useful since highly elevated 3-methoxytyramine levels may suggest the presence of metastatic tumors. ('3-methoxytyramine levels', 'MPA', (224, 248)) ('tumors', 'Phenotype', 'HP:0002664', (288, 294)) ('carriers', 'Reg', (94, 102)) ('elevated', 'PosReg', (215, 223)) ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (137, 154)) ('mutation', 'Var', (85, 93)) ('tumors', 'Disease', 'MESH:D009369', (288, 294)) ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (224, 241)) ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (172, 189)) ('highly elevated 3-methoxytyramine', 'Phenotype', 'HP:0030234', (208, 241)) ('tumor', 'Phenotype', 'HP:0002664', (288, 293)) ('tumors', 'Disease', (288, 294)) ('SDHx', 'Gene', (80, 84)) 63233 31597347 However, for SDHx mutated PGLs, HN PGLs, metastatic disease, and small, multiple PCCs/PGLs, both CT/MRI and meta-[123I]iodobenzylguanidine ([123I]MIBG) single-photon emission computed tomography (SPECT) suffer from significantly lower sensitivity compared to more recent radionuclide imaging. ('PCCs/PGLs', 'Disease', 'MESH:D010673', (81, 90)) ('[123I]MIBG', 'Chemical', 'MESH:D019797', (140, 150)) ('mutated', 'Var', (18, 25)) ('sensitivity', 'MPA', (235, 246)) ('SDHx', 'Gene', (13, 17)) ('meta-[123I]iodobenzylguanidine', 'Chemical', 'MESH:D019797', (108, 138)) ('metastatic disease', 'Disease', (41, 59)) ('lower', 'NegReg', (229, 234)) ('PCCs/PGLs', 'Disease', (81, 90)) 63234 31597347 A recent meta-analysis of pooled PCC/PGL detection by radionuclide imaging showed the highest sensitivity (93%) for 68Gallium-labeled somatostatin receptor analogs (SSAs) positron emission tomography/computed tomography ([68Ga]Ga-DOTA-SSA PET/CT), the second highest sensitivity for dihydroxy-[18F]fluorophenylalanine ([18F]FDOPA) PET/CT (80%), and the lowest sensitivity for [18F]fluorodeoxyglucose ([18F]FDG) PET/CT (74%). ('[18F]fluorodeoxyglucose', 'Chemical', 'MESH:D019788', (376, 399)) ('[18F]FDOPA', 'Chemical', 'MESH:C043437', (319, 329)) ('[68Ga]Ga-DOTA-SSA', 'Var', (221, 238)) ('PCC/PGL', 'Disease', 'MESH:D010673', (33, 40)) ('dihydroxy-[18F]fluorophenylalanine', 'MPA', (283, 317)) ('PCC/PGL', 'Disease', (33, 40)) ('[68Ga]Ga-DOTA-SSA', 'Chemical', 'MESH:C043055', (221, 238)) ('somatostatin', 'Chemical', 'MESH:D013004', (134, 146)) ('68Gallium', 'Chemical', 'MESH:D005708', (116, 125)) ('dihydroxy-[18F]fluorophenylalanine', 'Chemical', 'MESH:C054651', (283, 317)) ('[18F]FDG', 'Chemical', 'MESH:D019788', (401, 409)) 63235 31597347 However, in order to choose the imaging modality with the highest sensitivity, it is important to consider that different sub-groups of PCC/PGL patients show different sensitivities to [68Ga]Ga-DOTA-SSAs, [18F]FDOPA, and [18F]FDG PET/CT, respectively. ('[18F', 'Var', (205, 209)) ('PCC/PGL', 'Disease', (136, 143)) ('PCC/PGL', 'Disease', 'MESH:D010673', (136, 143)) ('[18F]FDG', 'Chemical', 'MESH:D019788', (221, 229)) ('[68Ga]Ga-DOTA-SSAs', 'Var', (185, 203)) ('patients', 'Species', '9606', (144, 152)) ('[18F]FDOPA', 'Chemical', 'MESH:C043437', (205, 215)) ('[18F]FDG', 'Var', (221, 229)) ('[68Ga]Ga-DOTA-SSA', 'Chemical', 'MESH:C043055', (185, 202)) 63236 31597347 The sensitivities to the different imaging modalities depend on the presence of PGL versus PCC, HN PGLs, sporadic metastatic, or non-metastatic disease, cluster 1 Krebs cycle-related SDHx mutations and VHL/EPAS1 pseudohypoxia-related mutations or cluster 2 kinase signaling-associated mutations (Table 2). ('mutations', 'Var', (188, 197)) ('PGL', 'Disease', (80, 83)) ('hypoxia', 'Disease', (218, 225)) ('hypoxia', 'Disease', 'MESH:D000860', (218, 225)) ('EPAS1', 'Gene', '2034', (206, 211)) ('PCC', 'Gene', '1421', (91, 94)) ('VHL', 'Gene', (202, 205)) ('EPAS1', 'Gene', (206, 211)) ('SDHx', 'Gene', (183, 187)) ('non-metastatic disease', 'Disease', (129, 151)) ('VHL', 'Gene', '7428', (202, 205)) ('PCC', 'Gene', (91, 94)) 63237 31597347 Metastatic SDHB-related PCCs/PGLs ([68Ga]Ga-DOTA-SSA 99% vs. [18F]FDOPA 61% vs. [18F]FDG PET/CT 86%); SDHA-related PCCs/PGLs (highest lesion detection sensitivity: [68Ga]Ga-DOTA-SSA > [18F]FDG > [18F]FDOPA PET/CT); SDHD-related PCCs/PGLs ([68Ga]Ga-DOTA-SSA 99% vs. [18F]FDOPA 87% vs. [18F]FDG PET/CT 62%); Pediatric SDHx-related PGLs/PCCs ([68Ga]Ga-DOTA-SSA 94% vs. [18F]FDG PET/CT 79%); HN PGLs (frequently SDHD-related) ([68Ga]Ga-DOTA-SSA 100% vs. [18F]FDOPA 97% vs. [18F]FDG PET/CT 71%); PGLs [pooled lesion-based sensitivity of [68Ga]Ga-DOTA-SSA PET/CT was higher, compared to [18F]FDOPA PET/CT in two different studies ([68Ga]Ga-DOTA-SSA 99% and 100% vs. [18F]FDOPA PET/CT 68% and 71%, respectively)]; Sporadic metastatic PCCs/PGLs ([68Ga]Ga-DOTA-SSA 98% vs. [18F]FDOPA 75% vs. [18F]FDG PET/CT 49%). ('PCC', 'Gene', (727, 730)) ('SDHB', 'Gene', (11, 15)) ('[18F]FDOPA', 'Chemical', 'MESH:C043437', (660, 670)) ('SDHD', 'Gene', '6392', (215, 219)) ('PCCs/PGLs', 'Disease', (115, 124)) ('[18F]FDG', 'Chemical', 'MESH:D019788', (80, 88)) ('[18F]FDG', 'Chemical', 'MESH:D019788', (284, 292)) ('PCC', 'Gene', '1421', (727, 730)) ('PCC', 'Gene', (115, 118)) ('SDHD', 'Gene', (408, 412)) ('[68Ga]Ga-DOTA-SSA', 'Chemical', 'MESH:C043055', (164, 181)) ('PCCs/PGLs', 'Disease', 'MESH:D010673', (24, 33)) ('SDHD', 'Gene', (215, 219)) ('CT 68', 'Gene', '166863', (675, 680)) ('[18F]FDG', 'Chemical', 'MESH:D019788', (366, 374)) ('PCC', 'Gene', '1421', (115, 118)) ('PCC', 'Gene', (334, 337)) ('[18F]FDOPA', 'Chemical', 'MESH:C043437', (61, 71)) ('[18F]FDG', 'Chemical', 'MESH:D019788', (783, 791)) ('[18F]FDOPA', 'Chemical', 'MESH:C043437', (195, 205)) ('SDHA', 'Gene', (102, 106)) ('PCCs/PGLs', 'Disease', (24, 33)) ('[68Ga]Ga-DOTA-SSA', 'Chemical', 'MESH:C043055', (423, 440)) ('CT 68', 'Gene', (675, 680)) ('[68Ga]Ga-DOTA-SSA', 'Chemical', 'MESH:C043055', (35, 52)) ('PCC', 'Gene', '1421', (334, 337)) ('[18F]FDOPA', 'Chemical', 'MESH:C043437', (450, 460)) ('PCC', 'Gene', (24, 27)) ('SDHA', 'Gene', '6389', (102, 106)) ('[68Ga]Ga-DOTA-SSA', 'Chemical', 'MESH:C043055', (239, 256)) ('[68Ga]Ga-DOTA-SSA', 'Chemical', 'MESH:C043055', (532, 549)) ('SDHB', 'Gene', '6390', (11, 15)) ('PCCs/PGLs', 'Disease', 'MESH:D010673', (228, 237)) ('PCCs/PGLs', 'Disease', 'MESH:D010673', (727, 736)) ('PCC', 'Gene', (228, 231)) ('PCC', 'Gene', '1421', (24, 27)) ('[18F]FDOPA', 'Chemical', 'MESH:C043437', (581, 591)) ('[18F]FDOPA', 'Chemical', 'MESH:C043437', (265, 275)) ('PCC', 'Gene', '1421', (228, 231)) ('[18F]FDOPA', 'Chemical', 'MESH:C043437', (764, 774)) ('[18F]FDG', 'Chemical', 'MESH:D019788', (184, 192)) ('PCCs/PGLs', 'Disease', 'MESH:D010673', (115, 124)) ('[18F]FDG', 'Chemical', 'MESH:D019788', (469, 477)) ('[68Ga]Ga-DOTA-SSA', 'Var', (738, 755)) ('PCCs/PGLs', 'Disease', (228, 237)) ('PCCs/PGLs', 'Disease', (727, 736)) ('SDHD', 'Gene', '6392', (408, 412)) ('[68Ga]Ga-DOTA-SSA', 'Chemical', 'MESH:C043055', (738, 755)) ('[68Ga]Ga-DOTA-SSA', 'Chemical', 'MESH:C043055', (340, 357)) ('[68Ga]Ga-DOTA-SSA', 'Chemical', 'MESH:C043055', (625, 642)) 63241 31597347 For HN PGLs, sporadic sympathetic PGLs, metastatic tumors, and SDHx-related PCCs/PGLs, [68Ga]Ga-DOTA-SSA PET/CT should be the first choice radionuclide imaging for diagnosis, staging, and follow-up (Table 1 and Table 2). ('[68Ga]Ga-DOTA-SSA', 'Chemical', 'MESH:C043055', (87, 104)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('HN PGLs', 'Disease', (4, 11)) ('PCCs/PGLs', 'Disease', (76, 85)) ('SDHx-related', 'Disease', (63, 75)) ('PCCs/PGLs', 'Disease', 'MESH:D010673', (76, 85)) ('tumors', 'Disease', (51, 57)) ('tumors', 'Disease', 'MESH:D009369', (51, 57)) ('tumors', 'Phenotype', 'HP:0002664', (51, 57)) ('[68Ga]Ga-DOTA-SSA', 'Var', (87, 104)) 63256 31597347 Moreover, extra-adrenal location, a noradrenergic or dopaminergic biochemical phenotype, high chromogranin A levels, young age <20 years, multiplicity, and, most importantly, pseudohypoxic cluster 1-related germline mutations (especially SDHA/B), are associated with a higher metastatic risk and an adverse prognosis once metastasis is found. ('chromogranin A', 'Gene', (94, 108)) ('SDHA', 'Gene', '6389', (238, 242)) ('metastatic', 'CPA', (276, 286)) ('dopamine', 'Chemical', 'MESH:D004298', (53, 61)) ('SDHA', 'Gene', (238, 242)) ('noradrenergic', 'MPA', (36, 49)) ('mutations', 'Var', (216, 225)) ('chromogranin A', 'Gene', '1113', (94, 108)) 63265 31597347 We suggest especially radionuclide imaging three-four months after presumed complete resection of a metastatic/multiple PCC, any PGL, or high-risk (SDHA/B) mutation carrier in the case of post-operative abnormal biochemistry or non-functional tumor (Table 3). ('SDHA', 'Gene', '6389', (148, 152)) ('mutation', 'Var', (156, 164)) ('PCC', 'Gene', (120, 123)) ('SDHA', 'Gene', (148, 152)) ('metastatic/multiple', 'Disease', (100, 119)) ('tumor', 'Disease', 'MESH:D009369', (243, 248)) ('PGL', 'Gene', (129, 132)) ('PCC', 'Gene', '1421', (120, 123)) ('tumor', 'Phenotype', 'HP:0002664', (243, 248)) ('tumor', 'Disease', (243, 248)) 63268 31597347 For patients with high-risk mutations (especially SDHA/B), we suggest clinical/biochemical control every six months and MRI every one-two years (consider CT for suspected lung involvement or use an alternate approach using CT and MRI). ('SDHA', 'Gene', '6389', (50, 54)) ('lung involvement', 'Disease', (171, 187)) ('SDHA', 'Gene', (50, 54)) ('patients', 'Species', '9606', (4, 12)) ('lung involvement', 'Disease', 'MESH:D008171', (171, 187)) ('mutations', 'Var', (28, 37)) 63273 31597347 The international multicenter prospective cohort study PROSPHEO including patients with a history of PCC/PGL, newly-diagnosed PCC/PGL, or mutations in PCC/PGL susceptibility genes from different centers in Germany and Switzerland over 18 years may eventually be able to answer questions concerning benefits of follow-up surveillance as well as the optimal follow-up procedures. ('PCC/PGL', 'Disease', 'MESH:D010673', (101, 108)) ('PCC/PGL', 'Disease', (101, 108)) ('patients', 'Species', '9606', (74, 82)) ('PCC/PGL', 'Disease', (126, 133)) ('PCC/PGL', 'Disease', 'MESH:D010673', (126, 133)) ('PCC/PGL', 'Disease', 'MESH:D010673', (151, 158)) ('PCC/PGL', 'Disease', (151, 158)) ('mutations', 'Var', (138, 147)) 63279 31597347 Watchful waiting with frequent follow-up may be the optimal initial approach in patients with non-functioning HN PGL, especially without evidence of significant tumor growth and/or compression of surrounding structures. ('patients', 'Species', '9606', (80, 88)) ('non-functioning', 'Var', (94, 109)) ('tumor', 'Disease', 'MESH:D009369', (161, 166)) ('tumor', 'Phenotype', 'HP:0002664', (161, 166)) ('HN PGL', 'Gene', (110, 116)) ('tumor', 'Disease', (161, 166)) 63287 31597347 Nevertheless, perioperative hypertension seems to be slightly better controlled with phenoxybenzamine (especially in those patients with high catecholamine or metanephrine levels), although with more pronounced postoperative hypotension. ('hypotension', 'Disease', 'MESH:D007022', (225, 236)) ('perioperative', 'Disease', (14, 27)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (85, 101)) ('metanephrine', 'Chemical', 'MESH:D008676', (159, 171)) ('catecholamine', 'Chemical', 'MESH:D002395', (142, 155)) ('better', 'PosReg', (62, 68)) ('hypotension', 'Disease', (225, 236)) ('hypertension', 'Disease', 'MESH:D006973', (28, 40)) ('patients', 'Species', '9606', (123, 131)) ('phenoxybenzamine', 'Var', (85, 101)) ('high catecholamine', 'Phenotype', 'HP:0003334', (137, 155)) ('hypertension', 'Disease', (28, 40)) ('hypotension', 'Phenotype', 'HP:0002615', (225, 236)) ('hypertension', 'Phenotype', 'HP:0000822', (28, 40)) 63294 31597347 In two of these studies, the mean progression-free survival (PFS) of [131I]MIBG treated patients was 23.1 and 28.5 months, respectively. ('[131I]', 'Var', (69, 75)) ('patients', 'Species', '9606', (88, 96)) ('MIBG', 'Gene', (75, 79)) ('[131I]MIBG', 'Chemical', 'MESH:D019797', (69, 79)) 63303 31597347 Of the 68 patients who received at least one therapeutic dose of HSA [131I]MIBG, 17 (25%) had a durable reduction in baseline anti-hypertensive medication use. ('reduction', 'NegReg', (104, 113)) ('anti-hypertensive medication', 'Phenotype', 'HP:0000822', (126, 154)) ('hypertensive', 'Disease', 'MESH:D006973', (131, 143)) ('HSA [131I]MIBG', 'Var', (65, 79)) ('[131I]MIBG', 'Chemical', 'MESH:D019797', (69, 79)) ('patients', 'Species', '9606', (10, 18)) ('hypertensive', 'Disease', (131, 143)) 63310 31597347 Although most studies consist of small numbers and limited follow-up, in one direct comparison study the percentage of patients with tumors showing disease stabilization was significantly greater after PRRT using [177Lu]Lu-DOTA(Tyr3)octreotate (TATE) (100%) compared to [131I]MIBG (62.5%), with a longer PFS/OS of 38.5/60.8 months in the [177Lu]Lu-DOTATATE group versus 20.6/41.2 months in the [131I]MIBG group. ('tumors', 'Phenotype', 'HP:0002664', (133, 139)) ('[131I]MIBG', 'Chemical', 'MESH:D019797', (270, 280)) ('[177Lu]Lu-DOTA(Tyr3)octreotate', 'Chemical', 'MESH:C554548', (213, 243)) ('tumors', 'Disease', (133, 139)) ('tumors', 'Disease', 'MESH:D009369', (133, 139)) ('[177Lu]Lu-DOTATATE', 'Var', (338, 356)) ('patients', 'Species', '9606', (119, 127)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('[131I]MIBG', 'Chemical', 'MESH:D019797', (394, 404)) ('[177Lu]Lu-DOTATATE', 'Chemical', 'MESH:C447941', (338, 356)) ('[177Lu]Lu-DOTA', 'Var', (213, 227)) ('TATE', 'Chemical', 'MESH:C554548', (245, 249)) ('disease stabilization', 'CPA', (148, 169)) ('TATE', 'Chemical', 'MESH:C554548', (352, 356)) ('greater', 'PosReg', (188, 195)) 63311 31597347 The benefit of [177Lu]Lu-DOTATATE, compared to [131I]MIBG, regarding PFS and OS was even stronger in the subgroup of PGLs (PFS/OS [177Lu]Lu-DOTATATE: 22.8/60.8, PFS/OS [131I]MIBG: 14.4/38.5). ('PFS', 'Disease', (69, 72)) ('[131I]MIBG', 'Chemical', 'MESH:D019797', (47, 57)) ('PFS/OS [177Lu]Lu-DOTATATE', 'Var', (123, 148)) ('[131I]MIBG', 'Chemical', 'MESH:D019797', (168, 178)) ('[177Lu]Lu-DOTATATE', 'Var', (15, 33)) ('[177Lu]Lu-DOTATATE', 'Chemical', 'MESH:C447941', (15, 33)) ('[177Lu]Lu-DOTATATE', 'Chemical', 'MESH:C447941', (130, 148)) 63312 31597347 Further clinically controlled studies (e.g., NCT04029428, NCT03923257, NCT03206060) should be awaited with regard to recommendations and guidelines, including the selection of the radionuclide (90Y, 177Lu; another potential future option is the use of alpha-emitting radionuclides), doses and dose regimens, but also the consideration of specific risk constellations (nephrotoxicity, patient age, co-medication with SSA). ('patient', 'Species', '9606', (384, 391)) ('NCT03206060', 'Var', (71, 82)) ('nephrotoxicity', 'Disease', (368, 382)) ('nephrotoxicity', 'Disease', 'MESH:D007674', (368, 382)) ('NCT04029428', 'Var', (45, 56)) ('177Lu', 'Chemical', 'MESH:C575017', (199, 204)) ('NCT03923257', 'Chemical', 'MESH:C079985', (58, 69)) 63319 31597347 Very recently, HSA [131I]MIBG (Azedra) has been FDA-approved in the United States for the treatment of metastatic PCC/PGL. ('HSA [131I]MIBG', 'Var', (15, 29)) ('[131I]MIBG', 'Chemical', 'MESH:D019797', (19, 29)) ('PCC/PGL', 'Disease', (114, 121)) ('PCC/PGL', 'Disease', 'MESH:D010673', (114, 121)) 63320 31597347 However, HSA [131I]MIBG was associated with a higher rate of hematologic toxicity although it can result in long-lasting disease stabilization and it may be preferable in patients with good bone marrow reserve. ('hematologic toxicity', 'Disease', (61, 81)) ('[131I]MIBG', 'Chemical', 'MESH:D019797', (13, 23)) ('patients', 'Species', '9606', (171, 179)) ('HSA [131I]MIBG', 'Var', (9, 23)) ('hematologic toxicity', 'Disease', 'MESH:D006402', (61, 81)) ('good bone marrow', 'Phenotype', 'HP:0005528', (185, 201)) 63328 31597347 Prolonged CVD chemotherapy (median of 20.5 cycles) in 12 patients with SDHB mutations led to a total response in 83% of patients [partial response 8/12 (66.7%) patients, complete response 2/12 (16.7%) patients, assessed by Response Evaluation Criteria in Solid Tumors (RECIST)] and a PFS/OS of 930 and 1190 days, respectively. ('patients', 'Species', '9606', (201, 209)) ('patients', 'Species', '9606', (160, 168)) ('mutations', 'Var', (76, 85)) ('SDHB', 'Gene', '6390', (71, 75)) ('patients', 'Species', '9606', (57, 65)) ('Tumors', 'Phenotype', 'HP:0002664', (261, 267)) ('Solid Tumors', 'Disease', 'MESH:D009369', (255, 267)) ('SDHB', 'Gene', (71, 75)) ('Solid Tumors', 'Disease', (255, 267)) ('patients', 'Species', '9606', (120, 128)) 63330 31597347 Monotherapy with the DNA-alkylating chemotherapeutic temozolomide, an oral metabolite of dacarbazine, showed a partial response (33%) or stable disease (47%) in a total of 80% of patients with SDHB mutations, and thus may be used as a single agent treatment, or alternatively could be considered as a maintenance regime for tumor stabilization subsequent to six-nine cycles of CVD chemotherapy (150 mg/m2 on days 1-5, at 28 day intervals). ('SDHB', 'Gene', '6390', (193, 197)) ('SDHB', 'Gene', (193, 197)) ('temozolomide', 'Chemical', 'MESH:C047246', (53, 65)) ('tumor', 'Phenotype', 'HP:0002664', (324, 329)) ('tumor', 'Disease', (324, 329)) ('dacarbazine', 'Chemical', 'MESH:D003606', (89, 100)) ('mutations', 'Var', (198, 207)) ('patients', 'Species', '9606', (179, 187)) ('tumor', 'Disease', 'MESH:D009369', (324, 329)) 63331 31597347 Down-regulation of the DNA repairing enzyme O-6-methylguanine-DNA methyltransferase (MGMT) via hypermethylation in SDHB mutated tumors appears to lead to increased susceptibility of SDHB-related PCCs/PGLs to temozolomide. ('PCCs/PGLs', 'Disease', 'MESH:D010673', (195, 204)) ('SDHB', 'Gene', '6390', (115, 119)) ('O-6-methylguanine-DNA methyltransferase', 'Gene', (44, 83)) ('temozolomide', 'Chemical', 'MESH:C047246', (208, 220)) ('SDHB', 'Gene', (115, 119)) ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('Down-regulation', 'NegReg', (0, 15)) ('tumors', 'Disease', (128, 134)) ('MGMT', 'Gene', (85, 89)) ('hypermethylation', 'Var', (95, 111)) ('tumors', 'Disease', 'MESH:D009369', (128, 134)) ('O-6-methylguanine-DNA methyltransferase', 'Gene', '4255', (44, 83)) ('MGMT', 'Gene', '4255', (85, 89)) ('SDHB', 'Gene', '6390', (182, 186)) ('PCCs/PGLs', 'Disease', (195, 204)) ('tumors', 'Phenotype', 'HP:0002664', (128, 134)) ('mutated', 'Var', (120, 127)) ('SDHB', 'Gene', (182, 186)) 63335 31597347 On a case-by-case decision, prolonged treatment with CVD chemotherapy with 20 cycles of CVD is suggested, especially in the case of patients with SDHB mutations. ('patients', 'Species', '9606', (132, 140)) ('SDHB', 'Gene', '6390', (146, 150)) ('mutations', 'Var', (151, 160)) ('SDHB', 'Gene', (146, 150)) 63338 31597347 They all have anti-angiogenic effects and may be interesting therapy options for cluster 1 and cluster 2 mutated PCCs/PGLs. ('PCCs/PGLs', 'Disease', (113, 122)) ('mutated', 'Var', (105, 112)) ('anti-angiogenic effects', 'CPA', (14, 37)) ('PCCs/PGLs', 'Disease', 'MESH:D010673', (113, 122)) 63345 31597347 A total of 6/8 (75%) of the patients with stable disease or partial responses in this study were SDHB mutation carriers, indicating clinical benefit especially for SDHB-related PCCs/PGLs. ('SDHB', 'Gene', (97, 101)) ('mutation', 'Var', (102, 110)) ('benefit', 'PosReg', (141, 148)) ('SDHB', 'Gene', '6390', (164, 168)) ('PCCs/PGLs', 'Disease', (177, 186)) ('PCCs/PGLs', 'Disease', 'MESH:D010673', (177, 186)) ('patients', 'Species', '9606', (28, 36)) ('SDHB', 'Gene', (164, 168)) ('SDHB', 'Gene', '6390', (97, 101)) 63348 31597347 The RET-mutated patient with MEN2A was still on sunitinib therapy by the time the study was published (after 64 cycles) which may implicate that RET and SDHx mutation carriers as benefiting the most. ('SDHx', 'Gene', (153, 157)) ('RET', 'Gene', '5979', (145, 148)) ('MEN2A', 'Gene', '5979', (29, 34)) ('mutation', 'Var', (158, 166)) ('RET', 'Gene', (4, 7)) ('MEN2A', 'Gene', (29, 34)) ('RET', 'Gene', (145, 148)) ('sunitinib', 'Chemical', 'MESH:C473478', (48, 57)) ('patient', 'Species', '9606', (16, 23)) ('RET', 'Gene', '5979', (4, 7)) 63374 31610522 MRI showed a 30 mm tumor on the interaortocaval region and 123I-MIBG concentrated in this area. ('tumor', 'Disease', 'MESH:D009369', (19, 24)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (59, 68)) ('123I-MIBG', 'Var', (59, 68)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('tumor', 'Disease', (19, 24)) 63383 31610522 All are caused by mutations in the rearranged duringtransfection (RET) gene and are inherited in an autosomal dominant fashion. ('caused by', 'Reg', (8, 17)) ('RET', 'Gene', '5979', (66, 69)) ('RET', 'Gene', (66, 69)) ('mutations', 'Var', (18, 27)) 63397 31610522 123I-MIBG was concentrated in bilateral adrenal tumors and the patient was diagnosed with bilateral PCCs. ('tumor', 'Phenotype', 'HP:0002664', (48, 53)) ('123I-MIBG', 'Var', (0, 9)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (0, 9)) ('tumors', 'Phenotype', 'HP:0002664', (48, 54)) ('adrenal tumors', 'Disease', (40, 54)) ('PCCs', 'Disease', 'MESH:D010673', (100, 104)) ('PCCs', 'Phenotype', 'HP:0002666', (100, 104)) ('patient', 'Species', '9606', (63, 70)) ('PCCs', 'Disease', (100, 104)) ('PCC', 'Phenotype', 'HP:0002666', (100, 103)) ('adrenal tumors', 'Disease', 'MESH:D000310', (40, 54)) 63404 31610522 Additionally, 123I-MIBG newly concentrated in the tumor (Fig. ('123I-MIBG', 'Var', (14, 23)) ('tumor', 'Disease', 'MESH:D009369', (50, 55)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (14, 23)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('tumor', 'Disease', (50, 55)) 63426 31610522 Multiple endocrine neoplasia type 2A is a multiple endocrine neoplasia syndrome caused by germ-line activating RET proto-oncogene mutations and characterized by medullary thyroid cancer and PCC. ('multiple endocrine neoplasia syndrome', 'Disease', (42, 79)) ('cancer', 'Phenotype', 'HP:0002664', (179, 185)) ('neoplasia', 'Phenotype', 'HP:0002664', (19, 28)) ('Multiple endocrine neoplasia type 2A', 'Gene', (0, 36)) ('thyroid cancer', 'Disease', 'MESH:D013964', (171, 185)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (51, 70)) ('PCC', 'Disease', 'MESH:D010673', (190, 193)) ('RET', 'Gene', '5979', (111, 114)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (171, 185)) ('caused by', 'Reg', (80, 89)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (161, 185)) ('PCC', 'Disease', (190, 193)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (9, 28)) ('PCC', 'Phenotype', 'HP:0002666', (190, 193)) ('Multiple endocrine neoplasia type 2A', 'Gene', '5979', (0, 36)) ('RET', 'Gene', (111, 114)) ('thyroid cancer', 'Disease', (171, 185)) ('mutations', 'Var', (130, 139)) ('multiple endocrine neoplasia syndrome', 'Disease', 'MESH:D009377', (42, 79)) ('neoplasia', 'Phenotype', 'HP:0002664', (61, 70)) 63427 31610522 Approximately 50% of patients with the RET mutation develop PCC. ('RET', 'Gene', (39, 42)) ('mutation', 'Var', (43, 51)) ('PCC', 'Disease', 'MESH:D010673', (60, 63)) ('PCC', 'Phenotype', 'HP:0002666', (60, 63)) ('PCC', 'Disease', (60, 63)) ('patients', 'Species', '9606', (21, 29)) ('RET', 'Gene', '5979', (39, 42)) 63560 29113559 To date, 17 studies from the NTP have reported xenobiotic-induced mesotheliomas in F344 rats; the F344 rat is particularly sensitive to developing this tumor type and is the only rodent strain reported to develop mesothelioma following xenobiotic exposure by a route other than peritoneal injection. ('tumor', 'Disease', 'MESH:D009369', (152, 157)) ('rat', 'Species', '10116', (103, 106)) ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('mesothelioma', 'Disease', (213, 225)) ('mesotheliomas', 'Disease', 'MESH:D008654', (66, 79)) ('rat', 'Species', '10116', (88, 91)) ('mesotheliomas', 'Disease', (66, 79)) ('mesothelioma', 'Disease', (66, 78)) ('tumor', 'Disease', (152, 157)) ('xenobiotic-', 'Phenotype', 'HP:0031838', (47, 58)) ('develop', 'PosReg', (205, 212)) ('mesothelioma', 'Disease', 'MESH:D008654', (213, 225)) ('NTP', 'Chemical', '-', (29, 32)) ('F344', 'Var', (98, 102)) ('mesothelioma', 'Disease', 'MESH:D008654', (66, 78)) ('rats', 'Species', '10116', (88, 92)) 63586 29113559 The causative frame-disrupting mutations of the DMD gene precludes the full translation of its protein product, dystrophin, causing progressive muscle disease. ('mutations', 'Var', (31, 40)) ('causing', 'Reg', (124, 131)) ('frame-disrupting', 'Reg', (14, 30)) ('full translation', 'MPA', (71, 87)) ('precludes', 'NegReg', (57, 66)) ('muscle disease', 'Disease', (144, 158)) ('muscle disease', 'Disease', 'MESH:D009135', (144, 158)) ('DMD gene', 'Gene', (48, 56)) 63662 29113559 A classic seminoma would be positive for OCT4 and D2-40 whereas a spermatocytic tumor would be negative for both. ('seminoma', 'Disease', 'MESH:D018239', (10, 18)) ('spermatocytic tumor', 'Disease', 'MESH:C563236', (66, 85)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('positive', 'Reg', (28, 36)) ('seminoma', 'Disease', (10, 18)) ('D2-40', 'Var', (50, 55)) ('OCT4', 'Protein', (41, 45)) ('spermatocytic tumor', 'Disease', (66, 85)) 63952 26460615 Deciphering the molecular basis of invasiveness in Sdhb-deficient cells Metastatic pheochromocytomas and paragangliomas (PPGL) are malignant neuroendocrine tumors frequently associated with germline mutations in the SDHB gene. ('Metastatic pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (72, 119)) ('Sdhb', 'Gene', '6390', (51, 55)) ('paragangliomas', 'Phenotype', 'HP:0002668', (105, 119)) ('associated', 'Reg', (174, 184)) ('germline mutations', 'Var', (190, 208)) ('malignant neuroendocrine tumors', 'Disease', 'MESH:D018358', (131, 162)) ('Sdhb', 'Gene', (51, 55)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('malignant neuroendocrine tumors', 'Disease', (131, 162)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (141, 162)) ('PGL', 'Disease', (122, 125)) ('tumors', 'Phenotype', 'HP:0002664', (156, 162)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (83, 100)) ('SDHB', 'Gene', (216, 220)) ('PGL', 'Disease', 'MESH:D010235', (122, 125)) 63954 26460615 In the present study, we report the characterization of a unique model of Sdhb knockout in mouse chromaffin cells. ('chromaffin', 'Chemical', '-', (97, 107)) ('mouse', 'Species', '10090', (91, 96)) ('Sdhb', 'Gene', (74, 78)) ('knockout', 'Var', (79, 87)) 63955 26460615 This phenotype is associated with the modulation of Twist1, Twist2, Tcf3, Snai1, N-cadherin or Krt19 expression, reflecting an EMT-like reprogramming of cells. ('Twist1', 'Gene', (52, 58)) ('modulation', 'Var', (38, 48)) ('Twist2', 'Gene', (60, 66)) ('N-cadherin', 'Gene', '1000', (81, 91)) ('Twist2', 'Gene', '117581', (60, 66)) ('Krt19', 'Gene', (95, 100)) ('Snai1', 'Gene', '6615', (74, 79)) ('Tcf3', 'Gene', (68, 72)) ('Twist1', 'Gene', '7291', (52, 58)) ('Tcf3', 'Gene', '6929', (68, 72)) ('Snai1', 'Gene', (74, 79)) ('N-cadherin', 'Gene', (81, 91)) 63958 26460615 In about 40% of cases, PPGL are inherited, which implies that a germline mutation has been identified in one of the 13 known PPGL predisposition genes: the RET and HIF2A proto-oncogenes and the NF1, VHL, SDHx (SDHA, SDHB, SDHC, SDHD and SDHAF2), MAX, TMEM127, FH and MDH2 tumor suppressor genes. ('SDHC', 'Gene', (222, 226)) ('PGL', 'Disease', 'MESH:D010235', (126, 129)) ('SDH', 'Gene', '6390', (216, 219)) ('FH', 'Disease', 'MESH:D006938', (260, 262)) ('HIF2A', 'Gene', '2034', (164, 169)) ('VHL', 'Disease', 'MESH:D006623', (199, 202)) ('SDH', 'Gene', (210, 213)) ('MDH2 tumor', 'Disease', 'MESH:D009369', (267, 277)) ('HIF2A', 'Gene', (164, 169)) ('PGL', 'Disease', (24, 27)) ('SDH', 'Gene', '6390', (237, 240)) ('SDH', 'Gene', '6390', (228, 231)) ('SDH', 'Gene', (216, 219)) ('SDH', 'Gene', '6390', (222, 225)) ('TMEM127', 'Gene', (251, 258)) ('PGL', 'Disease', (126, 129)) ('mutation', 'Var', (73, 81)) ('SDHD', 'Gene', '6392', (228, 232)) ('SDHAF2', 'Gene', '54949', (237, 243)) ('SDHC', 'Gene', '6391', (222, 226)) ('SDHAF2', 'Gene', (237, 243)) ('SDH', 'Gene', (237, 240)) ('NF1', 'Gene', '4763', (194, 197)) ('SDHA', 'Gene', (237, 241)) ('RET', 'Gene', '5979', (156, 159)) ('VHL', 'Disease', (199, 202)) ('SDH', 'Gene', '6390', (204, 207)) ('SDHA', 'Gene', '6389', (237, 241)) ('SDH', 'Gene', (228, 231)) ('TMEM127', 'Gene', '55654', (251, 258)) ('tumor', 'Phenotype', 'HP:0002664', (272, 277)) ('SDH', 'Gene', (222, 225)) ('SDH', 'Gene', '6390', (210, 213)) ('PGL', 'Disease', 'MESH:D010235', (24, 27)) ('NF1', 'Gene', (194, 197)) ('SDHA', 'Gene', (210, 214)) ('SDHD', 'Gene', (228, 232)) ('MDH2 tumor', 'Disease', (267, 277)) ('SDHA', 'Gene', '6389', (210, 214)) ('RET', 'Gene', (156, 159)) ('SDH', 'Gene', (204, 207)) 63961 26460615 Patients carrying an SDHB mutation are more likely to develop a metastatic form of their disease with a median survival substantially reduced, compared to patients without SDHB mutation. ('mutation', 'Var', (26, 34)) ('patients', 'Species', '9606', (155, 163)) ('Patients', 'Species', '9606', (0, 8)) ('reduced', 'NegReg', (134, 141)) ('develop', 'PosReg', (54, 61)) ('SDHB', 'Gene', (21, 25)) ('metastatic', 'CPA', (64, 74)) 63969 26460615 KRT19 extinction is due to the methylation of its promoter, as described in uterine leiomyoma, renal cell carcinoma, as well as in neuroblastoma, another neural crest cell derived tumor. ('tumor', 'Disease', 'MESH:D009369', (180, 185)) ('neuroblastoma', 'Disease', (131, 144)) ('KRT19', 'Gene', (0, 5)) ('tumor', 'Phenotype', 'HP:0002664', (180, 185)) ('renal cell carcinoma', 'Disease', (95, 115)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (95, 115)) ('neuroblastoma', 'Disease', 'MESH:D009447', (131, 144)) ('tumor', 'Disease', (180, 185)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (131, 144)) ('carcinoma', 'Phenotype', 'HP:0030731', (106, 115)) ('leiomyoma', 'Disease', (84, 93)) ('methylation', 'Var', (31, 42)) ('uterine leiomyoma', 'Phenotype', 'HP:0000131', (76, 93)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (95, 115)) ('leiomyoma', 'Disease', 'MESH:D007889', (84, 93)) 63971 26460615 We and others, recently demonstrated that mutations in SDHx genes (encoding succinate dehydrogenase subunits) lead to succinate accumulation, which inhibits DNA demethylases (TET enzymes), leading to a global hypermethylation of DNA. ('succinate', 'Chemical', 'MESH:D019802', (76, 85)) ('SDH', 'Gene', '6390', (55, 58)) ('succinate', 'Chemical', 'MESH:D019802', (118, 127)) ('succinate dehydrogenase', 'Gene', '6390', (76, 99)) ('inhibits', 'NegReg', (148, 156)) ('succinate dehydrogenase', 'Gene', (76, 99)) ('SDH', 'Gene', (55, 58)) ('mutations', 'Var', (42, 51)) ('succinate accumulation', 'MPA', (118, 140)) 63972 26460615 In SDHB-mutated PPGL and in Sdhb-/- immortalized mouse chromaffin cells (imCC), we demonstrated that KRT19 was one of the most hypermethylated and down-regulated gene. ('PGL', 'Disease', 'MESH:D010235', (17, 20)) ('down-regulated', 'NegReg', (147, 161)) ('chromaffin', 'Chemical', '-', (55, 65)) ('mouse', 'Species', '10090', (49, 54)) ('KRT19', 'Gene', (101, 106)) ('PGL', 'Disease', (17, 20)) ('SDHB-mutated', 'Var', (3, 15)) 63973 26460615 Following these observations, we evaluated here the consequences of SDHB loss and the role of KRT19 in the establishment of a metastatic phenotype following in vitro inactivation of Sdhb in murine chromaffin cells. ('loss', 'NegReg', (73, 77)) ('murine', 'Species', '10090', (190, 196)) ('Sdhb', 'Gene', (182, 186)) ('inactivation', 'Var', (166, 178)) ('SDHB', 'Gene', (68, 72)) ('chromaffin', 'Chemical', '-', (197, 207)) 63978 26460615 Using qRT-PCR, we validated that the expression of the main markers of EMT, Twist1, Twist2, Tcf3 and Snai1 were significantly increased, while N-cadherin and Krt19's expression were significantly decreased in Sdhb-/- imCC (Figure 2B and 3C). ('Twist2', 'Gene', '117581', (84, 90)) ('Twist1', 'Gene', (76, 82)) ('Snai1', 'Gene', '6615', (101, 106)) ('N-cadherin', 'Gene', (143, 153)) ('decreased', 'NegReg', (196, 205)) ('Tcf3', 'Gene', (92, 96)) ('expression', 'MPA', (166, 176)) ('N-cadherin', 'Gene', '1000', (143, 153)) ('Sdhb-/- imCC', 'Var', (209, 221)) ('Snai1', 'Gene', (101, 106)) ('Twist2', 'Gene', (84, 90)) ('expression', 'MPA', (37, 47)) ('increased', 'PosReg', (126, 135)) ('Tcf3', 'Gene', '6929', (92, 96)) ('Twist1', 'Gene', '7291', (76, 82)) 63980 26460615 Interestingly, transcriptome analyses showed a significant overexpression of Cd24a, Muc1, Lgals3, Lgals3bp, Lgals9, Ptk2 and integrins alpha1, alpha8, alpha11, beta3 and beta5 mRNAs in Sdhb-/- imCC compared to WT cells (Supplementary Figure 3), underscoring the high adherent properties of Sdhb-deficient cells. ('Lgals3', 'Gene', (98, 104)) ('Muc1', 'Gene', '4582', (84, 88)) ('Lgals3', 'Gene', '3958', (90, 96)) ('Muc1', 'Gene', (84, 88)) ('Cd24a', 'Gene', (77, 82)) ('Lgals3bp', 'Gene', (98, 106)) ('Sdhb-/- imCC', 'Var', (185, 197)) ('Lgals3', 'Gene', (90, 96)) ('overexpression', 'PosReg', (59, 73)) ('Lgals9', 'Gene', (108, 114)) ('Ptk2', 'Gene', (116, 120)) ('Lgals3', 'Gene', '3958', (98, 104)) ('Lgals3bp', 'Gene', '3959', (98, 106)) ('alpha1, alpha8, alpha11, beta3 and beta5', 'Gene', '1934', (135, 175)) ('Lgals9', 'Gene', '3965', (108, 114)) ('Cd24a', 'Gene', '100133941', (77, 82)) ('Ptk2', 'Gene', '5747', (116, 120)) 63983 26460615 Altogether, these data established that loss of SDHB promotes a transcriptional reprogramming that is associated with an EMT phenotype in the mouse chromaffin cell line. ('transcriptional reprogramming', 'CPA', (64, 93)) ('promotes', 'PosReg', (53, 61)) ('mouse', 'Species', '10090', (142, 147)) ('loss', 'Var', (40, 44)) ('chromaffin', 'Chemical', '-', (148, 158)) ('SDHB', 'Gene', (48, 52)) 63988 26460615 In the present study, we demonstrate that Sdhb inactivation alone is sufficient to promote the in vitro transformation of mouse chromaffin cells into invasive cells. ('inactivation', 'Var', (47, 59)) ('in vitro transformation', 'CPA', (95, 118)) ('chromaffin', 'Chemical', '-', (128, 138)) ('Sdhb', 'Gene', (42, 46)) ('promote', 'PosReg', (83, 90)) ('mouse', 'Species', '10090', (122, 127)) 63989 26460615 We show that Sdhb knockout leads to a molecular reprogramming compatible with the activation of an EMT-like process, as highlighted by both transcriptional and protein modulations of Twist1/2, Tcf3, Snai1, N-cadherin and Krt19, previously shown to be differentially expressed in SDHB-malignant human PPGL. ('Sdhb', 'Gene', (13, 17)) ('human', 'Species', '9606', (294, 299)) ('Snai1', 'Gene', (199, 204)) ('Tcf3', 'Gene', (193, 197)) ('molecular reprogramming', 'CPA', (38, 61)) ('PGL', 'Disease', (301, 304)) ('N-cadherin', 'Gene', (206, 216)) ('Twist1/2', 'Gene', '7291;117581', (183, 191)) ('N-cadherin', 'Gene', '1000', (206, 216)) ('PGL', 'Disease', 'MESH:D010235', (301, 304)) ('Twist1/2', 'Gene', (183, 191)) ('Tcf3', 'Gene', '6929', (193, 197)) ('knockout', 'Var', (18, 26)) ('Snai1', 'Gene', '6615', (199, 204)) ('Krt19', 'Gene', (221, 226)) 63992 26460615 While mutations in the 4 SDHx genes lead to a complete loss of SDH activity and predispose to PPGL, it is still unclear why SDHB inactivation only is responsible for metastatic forms of the disease. ('SDH', 'Gene', '6390', (63, 66)) ('loss', 'NegReg', (55, 59)) ('SDH', 'Gene', '6390', (124, 127)) ('predispose', 'Reg', (80, 90)) ('PGL', 'Disease', (95, 98)) ('SDH', 'Gene', (25, 28)) ('SDH', 'Gene', (63, 66)) ('activity', 'MPA', (67, 75)) ('SDH', 'Gene', (124, 127)) ('PGL', 'Disease', 'MESH:D010235', (95, 98)) ('mutations', 'Var', (6, 15)) ('SDH', 'Gene', '6390', (25, 28)) 63993 26460615 Our results in the Sdhb knockout cell model are in favor of the second one and suggest that SDHB inactivation is sufficient to induce both PPGL tumorigenesis and the EMT-associated metastatic phenotype. ('PGL', 'Disease', 'MESH:D010235', (140, 143)) ('tumor', 'Disease', (144, 149)) ('induce', 'PosReg', (127, 133)) ('SDHB', 'Gene', (92, 96)) ('PGL', 'Disease', (140, 143)) ('inactivation', 'Var', (97, 109)) ('EMT-associated metastatic phenotype', 'CPA', (166, 201)) ('tumor', 'Disease', 'MESH:D009369', (144, 149)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) 63996 26460615 However, we observed the loss of N-Cadherin after Sdhb inactivation. ('Sdhb', 'Gene', (50, 54)) ('inactivation', 'Var', (55, 67)) ('loss', 'NegReg', (25, 29)) ('N-Cadherin', 'Gene', (33, 43)) ('N-Cadherin', 'Gene', '1000', (33, 43)) 64001 26460615 By being one of the most significantly hypermethylated, and one of the most significantly down-regulated gene, KRT19 was a pertinent candidate to decipher the still misunderstood link between SDHB deficiency, hypermethylation, EMT and malignancy. ('SDHB deficiency', 'Disease', (192, 207)) ('SDHB deficiency', 'Disease', 'MESH:D007153', (192, 207)) ('malignancy', 'Disease', 'MESH:D009369', (235, 245)) ('hypermethylation', 'Var', (209, 225)) ('malignancy', 'Disease', (235, 245)) 64003 26460615 We show that SDHB loss alone induces a neuroendoMT phenomenon associated with increased metastatic abilities and likely explaining the bad prognosis caused by SDHB mutations in patients. ('induces', 'Reg', (29, 36)) ('loss', 'NegReg', (18, 22)) ('metastatic abilities', 'CPA', (88, 108)) ('patients', 'Species', '9606', (177, 185)) ('increased', 'PosReg', (78, 87)) ('SDHB', 'Gene', (13, 17)) ('neuroendoMT phenomenon', 'Disease', (39, 61)) ('mutations', 'Var', (164, 173)) 64023 26460615 The antibodies used were: anti-SDHA (Abcam, Ab14715), anti-SNAI1 (Abcam, Ab85931), anti-KRT19 (Thermo RB9021), anti-N-cadherin (Abcam, Ab12221), and anti alpha-tubulin (Sigma-Aldrich). ('SDHA', 'Gene', '6389', (31, 35)) ('N-cadherin', 'Gene', (116, 126)) ('anti-KRT19', 'Var', (83, 93)) ('alpha-tubulin', 'Gene', '10376', (154, 167)) ('N-cadherin', 'Gene', '1000', (116, 126)) ('SDHA', 'Gene', (31, 35)) ('SNAI1', 'Gene', '6615', (59, 64)) ('SNAI1', 'Gene', (59, 64)) ('alpha-tubulin', 'Gene', (154, 167)) 64117 27298894 Cut section showed grey brown with grey white area The postoperative course was uneventful with complete disappearance of pain and the neurological examination was normal. ('disappearance', 'NegReg', (105, 118)) ('grey brown', 'Var', (19, 29)) ('pain', 'Phenotype', 'HP:0012531', (122, 126)) ('pain', 'Disease', 'MESH:D010146', (122, 126)) ('pain', 'Disease', (122, 126)) 64129 22241719 The microRNA expression changes associated with malignancy and SDHB mutation in pheochromocytoma Currently, the diagnosis of malignant pheochromocytoma can only be made when there is clinical evidence of metastasis or extensive local invasion. ('SDHB', 'Gene', (63, 67)) ('pheochromocytoma', 'Disease', (80, 96)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('pheochromocytoma', 'Disease', (135, 151)) ('metastasis', 'CPA', (204, 214)) ('mutation', 'Var', (68, 76)) ('clinical', 'Species', '191496', (183, 191)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (135, 151)) ('malignancy', 'Disease', (48, 58)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (80, 96)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (135, 151)) ('changes', 'Reg', (24, 31)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (125, 151)) ('SDHB', 'Gene', '6390', (63, 67)) ('microRNA expression', 'MPA', (4, 23)) ('malignant pheochromocytoma', 'Disease', (125, 151)) ('malignancy', 'Disease', 'MESH:D009369', (48, 58)) 64137 22241719 Overall our data suggest that misexpression of miR-483-5p, miR-101, and miR-183 is associated with malignant pheochromocytoma. ('miR', 'Gene', '220972', (47, 50)) ('miR', 'Gene', (47, 50)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (99, 125)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (109, 125)) ('malignant pheochromocytoma', 'Disease', (99, 125)) ('miR', 'Gene', '220972', (59, 62)) ('miR', 'Gene', (59, 62)) ('miR-483', 'Gene', '619552', (47, 54)) ('associated', 'Reg', (83, 93)) ('miR-183', 'Gene', '406959', (72, 79)) ('miR-483', 'Gene', (47, 54)) ('miR-183', 'Gene', (72, 79)) ('miR', 'Gene', '220972', (72, 75)) ('misexpression', 'Var', (30, 43)) ('miR', 'Gene', (72, 75)) 64144 22241719 Although germline mutation in genes including RET, VHL, SDHC, SDHB, SDHD, TMEM127, MAX, or NF1 is associated with developing pheochromocytoma/PGL, the molecular events involved in malignant transformation are poorly understood. ('pheochromocytoma', 'Disease', 'MESH:D010673', (125, 141)) ('MAX', 'Gene', (83, 86)) ('VHL', 'Disease', (51, 54)) ('TMEM127', 'Gene', '55654', (74, 81)) ('SDHB', 'Gene', '6390', (62, 66)) ('associated with', 'Reg', (98, 113)) ('pheochromocytoma', 'Disease', (125, 141)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (125, 141)) ('NF1', 'Gene', '4763', (91, 94)) ('RET', 'Gene', '5979', (46, 49)) ('SDHC', 'Gene', '6391', (56, 60)) ('SDHB', 'Gene', (62, 66)) ('NF1', 'Gene', (91, 94)) ('SDHD', 'Gene', '6392', (68, 72)) ('VHL', 'Disease', 'MESH:D006623', (51, 54)) ('RET', 'Gene', (46, 49)) ('SDHD', 'Gene', (68, 72)) ('SDHC', 'Gene', (56, 60)) ('TMEM127', 'Gene', (74, 81)) ('germline mutation', 'Var', (9, 26)) 64148 22241719 Consistent with this prediction, numerous studies have linked altered miRNA expression to cancer, both as diagnostic markers and as functional contributors. ('altered', 'Var', (62, 69)) ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('miR', 'Gene', '220972', (70, 73)) ('miR', 'Gene', (70, 73)) ('cancer', 'Disease', (90, 96)) ('cancer', 'Disease', 'MESH:D009369', (90, 96)) 64156 22241719 Patients had genetic testing for mutations or large deletions in RET, VHL, SDHB, SDHC, and SDHD. ('SDHC', 'Gene', (81, 85)) ('RET', 'Gene', '5979', (65, 68)) ('SDHC', 'Gene', '6391', (81, 85)) ('SDHB', 'Gene', '6390', (75, 79)) ('mutations', 'Var', (33, 42)) ('SDHD', 'Gene', (91, 95)) ('RET', 'Gene', (65, 68)) ('large deletions', 'Var', (46, 61)) ('SDHD', 'Gene', '6392', (91, 95)) ('VHL', 'Disease', (70, 73)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', (75, 79)) ('VHL', 'Disease', 'MESH:D006623', (70, 73)) 64161 22241719 Briefly, for each array, 300 ng of total RNA (either tumor or reference) were labeled with Cy3 or Cy5 using the Array Labeling Kit (Exiqon, Vedbaek, Denmark). ('Cy5', 'Var', (98, 101)) ('Cy3', 'Chemical', '-', (91, 94)) ('tumor', 'Disease', 'MESH:D009369', (53, 58)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('Cy5', 'Chemical', 'MESH:C085321', (98, 101)) ('tumor', 'Disease', (53, 58)) ('Cy3', 'Var', (91, 94)) 64171 22241719 The following TaqMan MicroRNA Assays used in this study were obtained from Applied Biosystems: hsa-miR-483-5p (ID 2338), hsa-miR-101 (ID 2253), hsa-miR-513a-5p (ID 2090), hsa-miR-183 (ID 2269), has-miR-16 (ID), mmu-miR-710 (ID 1645), and U6 (ID 1973). ('miR', 'Gene', (198, 201)) ('miR', 'Gene', '220972', (99, 102)) ('miR-483', 'Gene', '619552', (99, 106)) ('miR-16', 'Gene', '51573', (198, 204)) ('miR', 'Gene', (125, 128)) ('miR', 'Gene', (148, 151)) ('miR', 'Gene', (99, 102)) ('ID 2269', 'Var', (184, 191)) ('miR-183', 'Gene', '406959', (175, 182)) ('miR', 'Gene', '220972', (215, 218)) ('miR', 'Gene', '220972', (175, 178)) ('miR-183', 'Gene', (175, 182)) ('miR', 'Gene', (215, 218)) ('miR', 'Gene', '220972', (198, 201)) ('miR', 'Gene', (175, 178)) ('miR-16', 'Gene', (198, 204)) ('miR-483', 'Gene', (99, 106)) ('miR', 'Gene', '220972', (125, 128)) ('miR', 'Gene', '220972', (148, 151)) 64198 22241719 In addition, when samples with succinate dehydrogenase subunit B (SDHB) mutations were compared with all non-SDHB mutation samples, we found that miR-101 and miR-183 were significantly different (Fig. ('SDHB', 'Gene', (66, 70)) ('mutations', 'Var', (72, 81)) ('different', 'Reg', (185, 194)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (31, 64)) ('miR', 'Gene', '220972', (158, 161)) ('SDHB', 'Gene', '6390', (109, 113)) ('miR', 'Gene', (158, 161)) ('SDHB', 'Gene', (109, 113)) ('succinate dehydrogenase subunit B', 'Gene', (31, 64)) ('miR-183', 'Gene', '406959', (158, 165)) ('miR-183', 'Gene', (158, 165)) ('miR', 'Gene', '220972', (146, 149)) ('miR', 'Gene', (146, 149)) ('SDHB', 'Gene', '6390', (66, 70)) 64199 22241719 Interestingly, for this comparison miR-483-5p expression did not differ; however, when only the malignant samples were compared, miR-483-5p expression was significantly lower in SDHB mutation positive tumors vs all other genotypes (Fig. ('miR-483', 'Gene', (35, 42)) ('miR-483', 'Gene', '619552', (129, 136)) ('tumor', 'Phenotype', 'HP:0002664', (201, 206)) ('miR-483', 'Gene', (129, 136)) ('mutation positive', 'Var', (183, 200)) ('tumors', 'Disease', (201, 207)) ('tumors', 'Disease', 'MESH:D009369', (201, 207)) ('tumors', 'Phenotype', 'HP:0002664', (201, 207)) ('SDHB', 'Gene', '6390', (178, 182)) ('lower', 'NegReg', (169, 174)) ('miR-483', 'Gene', '619552', (35, 42)) ('SDHB', 'Gene', (178, 182)) 64208 22241719 Since carriers of SDHB mutations are likely to have malignant pheochromocytoma, we further assessed the ability of miRNA expression to be a marker of malignancy in non-SDHB tumors. ('SDHB', 'Gene', (18, 22)) ('SDHB', 'Gene', '6390', (18, 22)) ('malignancy', 'Disease', (150, 160)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('SDHB', 'Gene', (168, 172)) ('tumor', 'Phenotype', 'HP:0002664', (173, 178)) ('mutations', 'Var', (23, 32)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (52, 78)) ('SDHB', 'Gene', '6390', (168, 172)) ('malignant pheochromocytoma', 'Disease', (52, 78)) ('tumors', 'Disease', (173, 179)) ('malignancy', 'Disease', 'MESH:D009369', (150, 160)) ('tumors', 'Disease', 'MESH:D009369', (173, 179)) ('tumors', 'Phenotype', 'HP:0002664', (173, 179)) ('miR', 'Gene', '220972', (115, 118)) ('miR', 'Gene', (115, 118)) 64226 22241719 Several clinical and pathologic factors and germline mutations are associated with malignant pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('clinical', 'Species', '191496', (8, 16)) ('germline mutations', 'Var', (44, 62)) ('associated', 'Reg', (67, 77)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (83, 109)) ('malignant pheochromocytoma', 'Disease', (83, 109)) 64230 22241719 SDHB encodes a subunit of the mitochondrial complex II, and mutations in SDHB lead to hereditary PGLs and occur at a high rate in malignant pheochromocytomas. ('malignant pheochromocytomas', 'Disease', 'MESH:D010673', (130, 157)) ('lead to', 'Reg', (78, 85)) ('hereditary PGLs', 'Disease', (86, 101)) ('SDHB', 'Gene', '6390', (0, 4)) ('rat', 'Species', '10116', (122, 125)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (140, 157)) ('mutations', 'Var', (60, 69)) ('malignant pheochromocytomas', 'Disease', (130, 157)) ('SDHB', 'Gene', '6390', (73, 77)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (140, 156)) ('SDHB', 'Gene', (0, 4)) ('SDHB', 'Gene', (73, 77)) 64231 22241719 In addition, several studies have shown an association between SDHB mutations and shorter overall survival in patients with malignant pheochromocytoma and PGL. ('SDHB', 'Gene', (63, 67)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (134, 150)) ('shorter', 'NegReg', (82, 89)) ('SDHB', 'Gene', '6390', (63, 67)) ('mutations', 'Var', (68, 77)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (124, 150)) ('PGL', 'Disease', (155, 158)) ('malignant pheochromocytoma', 'Disease', (124, 150)) ('patients', 'Species', '9606', (110, 118)) ('overall survival', 'MPA', (90, 106)) 64232 22241719 We found significant expression differences in miR-101 and miR-183 when samples with SDHB mutations were compared with all non-SDHB genotypes (RET, VHL, NF1, and sporadic). ('mutations', 'Var', (90, 99)) ('miR', 'Gene', '220972', (47, 50)) ('miR', 'Gene', (47, 50)) ('NF1', 'Gene', (153, 156)) ('RET', 'Gene', (143, 146)) ('SDHB', 'Gene', '6390', (127, 131)) ('expression', 'MPA', (21, 31)) ('miR', 'Gene', '220972', (59, 62)) ('SDHB', 'Gene', '6390', (85, 89)) ('miR', 'Gene', (59, 62)) ('NF1', 'Gene', '4763', (153, 156)) ('SDHB', 'Gene', (85, 89)) ('SDHB', 'Gene', (127, 131)) ('VHL', 'Disease', 'MESH:D006623', (148, 151)) ('miR-183', 'Gene', '406959', (59, 66)) ('miR-183', 'Gene', (59, 66)) ('VHL', 'Disease', (148, 151)) ('RET', 'Gene', '5979', (143, 146)) 64254 10992729 This was thus a case of Cushing's syndrome resulting from ectopic ACTH production in anterior mediastinal paraganglioma. ('mediastinal paraganglioma', 'Disease', 'MESH:D008480', (94, 119)) ("Cushing's syndrome", 'Phenotype', 'HP:0003118', (24, 42)) ("Cushing's syndrome", 'Disease', (24, 42)) ('ectopic', 'Var', (58, 65)) ("Cushing's syndrome", 'Disease', 'MESH:D003480', (24, 42)) ('mediastinal paraganglioma', 'Disease', (94, 119)) ('ACTH', 'Gene', (66, 70)) ('resulting from', 'Reg', (43, 57)) ('paraganglioma', 'Phenotype', 'HP:0002668', (106, 119)) ('ACTH', 'Gene', '5443', (66, 70)) 64314 10992729 However, the presence of bands of connective tissue, nuclear pleomorphism with bizarre forms and absence of festfoons or rosettes are histological features more in favor of paraganglioma. ('paraganglioma', 'Disease', (173, 186)) ('rosettes', 'Phenotype', 'HP:0031925', (121, 129)) ('paraganglioma', 'Disease', 'MESH:D010235', (173, 186)) ('paraganglioma', 'Phenotype', 'HP:0002668', (173, 186)) ('bizarre forms', 'CPA', (79, 92)) ('nuclear pleomorphism', 'Var', (53, 73)) 64450 23152728 Norepinephrine-secreting tumours cause sustained hypertension, while tumours that secrete large amounts of both epinephrine and norepinephrine are associated with episodic hypertension. ('associated with', 'Reg', (147, 162)) ('hypertension', 'Disease', 'MESH:D006973', (172, 184)) ('tumour', 'Phenotype', 'HP:0002664', (69, 75)) ('Norepinephrine-secreting', 'Var', (0, 24)) ('hypertension', 'Disease', (172, 184)) ('tumours', 'Disease', (25, 32)) ('episodic hypertension', 'Disease', 'MESH:D006973', (163, 184)) ('hypertension', 'Disease', 'MESH:D006973', (49, 61)) ('epinephrine', 'Chemical', 'MESH:D004837', (112, 123)) ('episodic hypertension', 'Phenotype', 'HP:0000875', (163, 184)) ('tumours', 'Phenotype', 'HP:0002664', (25, 32)) ('tumours', 'Disease', 'MESH:D009369', (25, 32)) ('hypertension', 'Disease', (49, 61)) ('hypertension', 'Phenotype', 'HP:0000822', (172, 184)) ('norepinephrine', 'Chemical', 'MESH:D009638', (128, 142)) ('tumour', 'Phenotype', 'HP:0002664', (25, 31)) ('hypertension', 'Phenotype', 'HP:0000822', (49, 61)) ('Norepinephrine', 'Chemical', 'MESH:D009638', (0, 14)) ('tumours', 'Disease', (69, 76)) ('epinephrine', 'Chemical', 'MESH:D004837', (3, 14)) ('tumours', 'Phenotype', 'HP:0002664', (69, 76)) ('episodic hypertension', 'Disease', (163, 184)) ('epinephrine', 'Chemical', 'MESH:D004837', (131, 142)) ('tumours', 'Disease', 'MESH:D009369', (69, 76)) 64523 19669229 Inhibition of the PI3K Pathway Suppresses Hormonal Secretion and Limits Growth in Pheochromocytoma Cells Operative resection is the only curative treatment for pheochromocytomas. ('PI3K Pathway', 'Pathway', (18, 30)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (160, 177)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (160, 176)) ('Hormonal Secretion', 'MPA', (42, 60)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (82, 98)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (160, 177)) ('Inhibition', 'Var', (0, 10)) ('pheochromocytomas', 'Disease', (160, 177)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (82, 98)) ('Limits', 'NegReg', (65, 71)) ('Suppresses', 'NegReg', (31, 41)) ('Pheochromocytoma', 'Disease', (82, 98)) ('Growth', 'MPA', (72, 78)) 64524 19669229 Inhibition of the phosphatidylinositol-3 kinase (PI3K)-Akt pathway has been shown to be an effective treatment of neuroendocrine (NE) tumors in vitro. ('tumors', 'Disease', (134, 140)) ('tumors', 'Phenotype', 'HP:0002664', (134, 140)) ('tumors', 'Disease', 'MESH:D009369', (134, 140)) ('Inhibition', 'Var', (0, 10)) ('tumor', 'Phenotype', 'HP:0002664', (134, 139)) 64525 19669229 We hypothesized that inhibition of the PI3K-Akt pathway would be a viable strategy to inhibit growth and hormonal secretion in pheochromocytoma cells. ('pheochromocytoma', 'Disease', (127, 143)) ('inhibition', 'Var', (21, 31)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (127, 143)) ('inhibit', 'NegReg', (86, 93)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (127, 143)) ('PI3K-Akt pathway', 'Pathway', (39, 55)) 64530 19669229 LY294002 significantly inhibited the PI3K-Akt pathway. ('LY294002', 'Var', (0, 8)) ('PI3K-Akt pathway', 'Pathway', (37, 53)) ('LY294002', 'Chemical', 'MESH:C085911', (0, 8)) ('inhibited', 'NegReg', (23, 32)) 64533 19669229 LY294002 effectively inhibits the PI3K-Akt pathway, suppresses NE tumor markers, and decreases cellular proliferation via apoptosis in vitro. ('LY294002', 'Var', (0, 8)) ('decreases', 'NegReg', (85, 94)) ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('inhibits', 'NegReg', (21, 29)) ('PI3K-Akt pathway', 'Pathway', (34, 50)) ('tumor', 'Disease', (66, 71)) ('apoptosis', 'CPA', (122, 131)) ('LY294002', 'Chemical', 'MESH:C085911', (0, 8)) ('cellular proliferation', 'CPA', (95, 117)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) ('suppresses', 'NegReg', (52, 62)) 64534 19669229 Inhibition of the PI3K pathway may represent a new strategy in the treatment of pheochromocytomas. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (80, 97)) ('pheochromocytomas', 'Disease', (80, 97)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (80, 97)) ('Inhibition', 'Var', (0, 10)) ('PI3K pathway', 'Pathway', (18, 30)) 64542 19669229 In turn, PI3K activates Akt (alternaively, protein kinase B) by phosphorylation at the threonine 308 and serine 473 residues. ('phosphorylation', 'MPA', (64, 79)) ('threonine', 'Chemical', 'MESH:D013912', (87, 96)) ('Akt', 'Pathway', (24, 27)) ('protein kinase B', 'Gene', (43, 59)) ('serine 473', 'Var', (105, 115)) ('PI3K', 'Var', (9, 13)) ('activates', 'PosReg', (14, 23)) ('protein kinase B', 'Gene', '2185', (43, 59)) ('serine', 'Chemical', 'MESH:D012694', (105, 111)) 64549 19669229 This led us to hypothesize that inhibition of the PI3K-Akt pathway could lower NE markers, suppress hormonal secretion, and inhibit growth in an in vitro model of pheochromocytoma. ('inhibition', 'Var', (32, 42)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (163, 179)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (163, 179)) ('NE markers', 'MPA', (79, 89)) ('suppress', 'NegReg', (91, 99)) ('growth', 'CPA', (132, 138)) ('PI3K-Akt pathway', 'Pathway', (50, 66)) ('hormonal secretion', 'MPA', (100, 118)) ('lower', 'NegReg', (73, 78)) ('pheochromocytoma', 'Disease', (163, 179)) ('inhibit', 'NegReg', (124, 131)) 64554 19669229 Rat pheochromocytoma PC-12 cells were obtained from American Type Culture Collection (ATCC, Manassas, VA) and were maintained in Ham's F12K medium (ATCC) supplemented with 15% horse serum (Sigma Aldrich, St. Louis, MO), 2.5% fetal bovine serum (Sigma Aldrich), and 100 IU/ml penicillin plus 100 microg/ml streptomycin (Invitrogen, Carlsbad, CA), as previously described. ('penicillin', 'Chemical', 'MESH:D010406', (275, 285)) ('PC-12', 'CellLine', 'CVCL:0481', (21, 26)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (4, 20)) ('horse', 'Species', '9796', (176, 181)) ('streptomycin', 'Chemical', 'MESH:D013307', (305, 317)) ('F12K', 'SUBSTITUTION', 'None', (135, 139)) ('F12K', 'Var', (135, 139)) ('pheochromocytoma', 'Disease', (4, 20)) ('bovine', 'Species', '9913', (231, 237)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (4, 20)) 64555 19669229 The cells were maintained in a humidified atmosphere of 5% CO2 at 37 C. The PC-12 pheochromocytoma cells were treated with the PI3K-specific inhibitor LY294002 (Sigma Aldrich) in concentrations from 0 to 100 microM, and whole cell lysates were prepared as previously described. ('LY294002', 'Var', (151, 159)) ('PC-12', 'CellLine', 'CVCL:0481', (76, 81)) ('pheochromocytoma', 'Disease', (82, 98)) ('LY294002', 'Chemical', 'MESH:C085911', (151, 159)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (82, 98)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (82, 98)) ('CO2', 'Chemical', '-', (59, 62)) 64562 19669229 SuperSignal West Femto (Pierce Biotechnology) was used for ASCL1, pAkt, and cleaved caspase-3 according to the manufacturer's instructions. ('caspase-3', 'Gene', (84, 93)) ('cleaved', 'Var', (76, 83)) ('caspase-3', 'Gene', '836', (84, 93)) 64572 19669229 The PC-12 pheochromocytoma cells were treated with the Akt inhibitor LY294002 for two days. ('LY294002', 'Var', (69, 77)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (10, 26)) ('PC-12', 'CellLine', 'CVCL:0481', (4, 9)) ('LY294002', 'Chemical', 'MESH:C085911', (69, 77)) ('pheochromocytoma', 'Disease', (10, 26)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (10, 26)) 64575 19669229 Treatment with LY294002 resulted in a dose-dependent decrease in pAkt, indicating inhibition of the pathway. ('LY294002', 'Chemical', 'MESH:C085911', (15, 23)) ('pAkt', 'MPA', (65, 69)) ('decrease', 'NegReg', (53, 61)) ('LY294002', 'Var', (15, 23)) 64576 19669229 There was no change in the total expression of Akt with increasing concentrations of LY294002. ('LY294002', 'Chemical', 'MESH:C085911', (85, 93)) ('LY294002', 'Var', (85, 93)) ('Akt', 'Pathway', (47, 50)) 64578 19669229 Thus, the PI3K-Akt pathway is highly active in pheochromocytoma cells, and it can be inhibited by LY294002. ('PI3K-Akt pathway', 'Pathway', (10, 26)) ('inhibited', 'NegReg', (85, 94)) ('LY294002', 'Chemical', 'MESH:C085911', (98, 106)) ('pheochromocytoma', 'Disease', (47, 63)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (47, 63)) ('active', 'MPA', (37, 43)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (47, 63)) ('LY294002', 'Var', (98, 106)) 64579 19669229 Treatment with LY294002 led to a dose-dependent decrease in ASCL1 (Fig. ('LY294002', 'Chemical', 'MESH:C085911', (15, 23)) ('ASCL1', 'MPA', (60, 65)) ('decrease', 'NegReg', (48, 56)) ('LY294002', 'Var', (15, 23)) 64582 19669229 We therefore wanted to see if LY294002 was also able to decrease CgA in PC-12 pheochromocytoma cells. ('PC-12', 'CellLine', 'CVCL:0481', (72, 77)) ('pheochromocytoma', 'Disease', (78, 94)) ('LY294002', 'Chemical', 'MESH:C085911', (30, 38)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (78, 94)) ('decrease CgA', 'Phenotype', 'HP:0002720', (56, 68)) ('CgA', 'MPA', (65, 68)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (78, 94)) ('decrease', 'NegReg', (56, 64)) ('LY294002', 'Var', (30, 38)) 64583 19669229 3, treatment of PC-12 cells with LY294002 decreased CgA, suggesting an overall decrease in hormonal secretion. ('hormonal secretion', 'MPA', (91, 109)) ('decreased', 'NegReg', (42, 51)) ('LY294002', 'Chemical', 'MESH:C085911', (33, 41)) ('PC-12', 'CellLine', 'CVCL:0481', (16, 21)) ('decrease', 'NegReg', (79, 87)) ('decreased CgA', 'Phenotype', 'HP:0002720', (42, 55)) ('LY294002', 'Var', (33, 41)) ('CgA', 'MPA', (52, 55)) 64584 19669229 Our group has demonstrated growth suppression associated with PI3K-Akt inhibition in medullary thyroid cancer cells. ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (85, 109)) ('cancer', 'Phenotype', 'HP:0002664', (103, 109)) ('PI3K-Akt', 'Var', (62, 70)) ('inhibition', 'NegReg', (71, 81)) ('growth suppression', 'CPA', (27, 45)) ('thyroid cancer', 'Disease', (95, 109)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (95, 109)) ('thyroid cancer', 'Disease', 'MESH:D013964', (95, 109)) 64587 19669229 Growth was inhibited in a dose-dependent manner by LY294002 (Fig. ('inhibited', 'NegReg', (11, 20)) ('LY294002', 'Chemical', 'MESH:C085911', (51, 59)) ('LY294002', 'Var', (51, 59)) ('Growth', 'CPA', (0, 6)) 64588 19669229 Moreover, growth was significantly suppressed after only 2 days by the lowest amount of LY294002 used (P < 0.001, one-way ANOVA). ('LY294002', 'Chemical', 'MESH:C085911', (88, 96)) ('suppressed', 'NegReg', (35, 45)) ('growth', 'MPA', (10, 16)) ('LY294002', 'Var', (88, 96)) 64590 19669229 Noticing significantly limited cellular proliferation with LY294002 treatment in PC-12 cells, we wanted to study the mechanism of this inhibition. ('LY294002', 'Var', (59, 67)) ('PC-12', 'CellLine', 'CVCL:0481', (81, 86)) ('LY294002', 'Chemical', 'MESH:C085911', (59, 67)) ('limited', 'NegReg', (23, 30)) ('cellular proliferation', 'CPA', (31, 53)) 64592 19669229 After 2 days of PI3K inhibition by LY294002, increased cleavage in both PARP and caspase-3 (Fig. ('caspase-3', 'Gene', '836', (81, 90)) ('LY294002', 'Var', (35, 43)) ('increased', 'PosReg', (45, 54)) ('PARP', 'Gene', '142', (72, 76)) ('caspase-3', 'Gene', (81, 90)) ('cleavage', 'MPA', (55, 63)) ('PARP', 'Gene', (72, 76)) ('LY294002', 'Chemical', 'MESH:C085911', (35, 43)) 64593 19669229 These increases were dose dependent and suggest that the cell death observed by MTT was due to apoptosis, which indicates that LY294002 causes growth inhibition via apoptosis. ('LY294002', 'Chemical', 'MESH:C085911', (127, 135)) ('apoptosis', 'CPA', (165, 174)) ('growth inhibition', 'CPA', (143, 160)) ('MTT', 'Chemical', '-', (80, 83)) ('LY294002', 'Var', (127, 135)) 64612 19669229 As these patients often suffer from symptoms such as sweating, headache, tachycardia, and hypertension, inhibition of the PI3K-Akt pathway could be therapeutically useful if it decreases hormonal secretion. ('patients', 'Species', '9606', (9, 17)) ('hypertension', 'Disease', (90, 102)) ('headache', 'Disease', (63, 71)) ('sweating', 'Disease', (53, 61)) ('sweating', 'Phenotype', 'HP:0000975', (53, 61)) ('headache', 'Disease', 'MESH:D006261', (63, 71)) ('tachycardia', 'Phenotype', 'HP:0001649', (73, 84)) ('headache', 'Phenotype', 'HP:0002315', (63, 71)) ('suffer', 'Reg', (24, 30)) ('decreases', 'NegReg', (177, 186)) ('tachycardia', 'Disease', 'MESH:D013610', (73, 84)) ('hypertension', 'Disease', 'MESH:D006973', (90, 102)) ('tachycardia', 'Disease', (73, 84)) ('PI3K-Akt pathway', 'Pathway', (122, 138)) ('inhibition', 'Var', (104, 114)) ('hormonal secretion', 'MPA', (187, 205)) ('hypertension', 'Phenotype', 'HP:0000822', (90, 102)) 64620 19669229 Inhibition of the PI3K-Akt pathway with LY294002 in pheochromocytoma cells downregulated the NE phenotype, decreased hormonal secretion, and suppressed growth via apoptosis. ('LY294002', 'Chemical', 'MESH:C085911', (40, 48)) ('downregulated', 'NegReg', (75, 88)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (52, 68)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (52, 68)) ('PI3K-Akt pathway', 'Pathway', (18, 34)) ('growth via apoptosis', 'CPA', (152, 172)) ('decreased', 'NegReg', (107, 116)) ('hormonal secretion', 'MPA', (117, 135)) ('NE phenotype', 'MPA', (93, 105)) ('decreased hormonal', 'Phenotype', 'HP:0000824', (107, 125)) ('suppressed', 'NegReg', (141, 151)) ('LY294002', 'Var', (40, 48)) ('pheochromocytoma', 'Disease', (52, 68)) 64734 21060768 suggested that the combination of 131I-MIBG and cisplatinum or doxorubicin could selectively increase radiation doses delivered to neuroblastoma cells. ('neuroblastoma', 'Disease', (131, 144)) ('cisplatinum', 'Chemical', 'MESH:D002945', (48, 59)) ('radiation', 'Disease', 'MESH:D004194', (102, 111)) ('increase', 'PosReg', (93, 101)) ('radiation', 'Disease', (102, 111)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (131, 144)) ('131I-MIBG', 'Var', (34, 43)) ('doxorubicin', 'Chemical', 'MESH:D004317', (63, 74)) ('neuroblastoma', 'Disease', 'MESH:D009447', (131, 144)) ('131I-MIBG', 'Chemical', '-', (34, 43)) 64750 33114456 Identification of Novel Mutations and Expressions of EPAS1 in Phaeochromocytomas and Paragangliomas Endothelial PAS domain-containing protein 1 (EPAS1) is an oxygen-sensitive component of the hypoxia-inducible factors (HIFs) having reported implications in many cancers by inducing a pseudo-hypoxic microenvironment. ('p', 'Chemical', 'MESH:D010758', (134, 135)) ('HIFs', 'Disease', (219, 223)) ('c', 'Chemical', 'MESH:D002244', (175, 176)) ('EPAS1', 'Gene', (53, 58)) ('oxygen', 'Chemical', 'MESH:D010100', (158, 164)) ('c', 'Chemical', 'MESH:D002244', (262, 263)) ('hypoxia', 'Disease', (192, 199)) ('c', 'Chemical', 'MESH:D002244', (8, 9)) ('p', 'Chemical', 'MESH:D010758', (293, 294)) ('c', 'Chemical', 'MESH:D002244', (73, 74)) ('c', 'Chemical', 'MESH:D002244', (246, 247)) ('HIFs', 'Disease', 'None', (219, 223)) ('men', 'Species', '9606', (311, 314)) ('c', 'Chemical', 'MESH:D002244', (301, 302)) ('c', 'Chemical', 'MESH:D002244', (277, 278)) ('p', 'Chemical', 'MESH:D010758', (284, 285)) ('p', 'Chemical', 'MESH:D010758', (234, 235)) ('hypoxia', 'Disease', 'MESH:D000860', (192, 199)) ('cancers', 'Disease', 'MESH:D009369', (262, 269)) ('p', 'Chemical', 'MESH:D010758', (194, 195)) ('EPAS1', 'Gene', (145, 150)) ('Mutations', 'Var', (24, 33)) ('c', 'Chemical', 'MESH:D002244', (204, 205)) ('cancers', 'Phenotype', 'HP:0002664', (262, 269)) ('EPAS1', 'Gene', '2034', (53, 58)) ('cancers', 'Disease', (262, 269)) ('p', 'Chemical', 'MESH:D010758', (243, 244)) ('implications', 'Reg', (241, 253)) ('p', 'Chemical', 'MESH:D010758', (178, 179)) ('c', 'Chemical', 'MESH:D002244', (212, 213)) ('Phaeochromocytomas and Paragangliomas', 'Disease', 'MESH:D010235', (62, 99)) ('cancer', 'Phenotype', 'HP:0002664', (262, 268)) ('Endothelial PAS domain-containing protein 1', 'Gene', '2034', (100, 143)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (85, 99)) ('c', 'Chemical', 'MESH:D002244', (67, 68)) ('pseudo-hypoxic microenvironment', 'MPA', (284, 315)) ('c', 'Chemical', 'MESH:D002244', (297, 298)) ('Endothelial PAS domain-containing protein 1', 'Gene', (100, 143)) ('c', 'Chemical', 'MESH:D002244', (123, 124)) ('EPAS1', 'Gene', '2034', (145, 150)) ('c', 'Chemical', 'MESH:D002244', (265, 266)) ('p', 'Chemical', 'MESH:D010758', (40, 41)) ('inducing', 'Reg', (273, 281)) 64752 33114456 This study aims to identify EPAS1 mutations and alterations in DNA copy number, mRNA and protein expression in patients with phaeochromocytomas/paragangliomas. ('c', 'Chemical', 'MESH:D002244', (136, 137)) ('alterations', 'Reg', (48, 59)) ('paragangliomas', 'Phenotype', 'HP:0002668', (144, 158)) ('paraganglioma', 'Phenotype', 'HP:0002668', (144, 157)) ('p', 'Chemical', 'MESH:D010758', (125, 126)) ('EPAS1', 'Gene', (28, 33)) ('p', 'Chemical', 'MESH:D010758', (69, 70)) ('DNA copy number', 'MPA', (63, 78)) ('phaeochromocytomas/paragangliomas', 'Disease', (125, 158)) ('p', 'Chemical', 'MESH:D010758', (99, 100)) ('protein expression', 'MPA', (89, 107)) ('c', 'Chemical', 'MESH:D002244', (67, 68)) ('c', 'Chemical', 'MESH:D002244', (130, 131)) ('p', 'Chemical', 'MESH:D010758', (144, 145)) ('p', 'Chemical', 'MESH:D010758', (89, 90)) ('phaeochromocytomas/paragangliomas', 'Disease', 'MESH:D010235', (125, 158)) ('p', 'Chemical', 'MESH:D010758', (111, 112)) ('mutations', 'Var', (34, 43)) ('patients', 'Species', '9606', (111, 119)) 64754 33114456 High-resolution melt-curve analysis followed by Sanger sequencing was used to detect mutations in EPAS1. ('EPAS1', 'Gene', (98, 103)) ('c', 'Chemical', 'MESH:D002244', (21, 22)) ('mutations', 'Var', (85, 94)) ('c', 'Chemical', 'MESH:D002244', (61, 62)) ('c', 'Chemical', 'MESH:D002244', (82, 83)) 64757 33114456 In phaeochromocytomas, 12% (n = 7/57) of patients had mutations in the EPAS1 sequence, which includes two novel mutations (c.1091A>T; p.Lys364Met and c.1129A>T; p.Ser377Cys). ('p.Ser377Cys', 'SUBSTITUTION', 'None', (161, 172)) ('p.Ser377Cys', 'Var', (161, 172)) ('c', 'Chemical', 'MESH:D002244', (8, 9)) ('c', 'Chemical', 'MESH:D002244', (95, 96)) ('phaeochromocytomas', 'Disease', 'MESH:D010673', (3, 21)) ('c', 'Chemical', 'MESH:D002244', (150, 151)) ('c', 'Chemical', 'MESH:D002244', (14, 15)) ('c.1129A>T', 'SUBSTITUTION', 'None', (150, 159)) ('c', 'Chemical', 'MESH:D002244', (83, 84)) ('c.1091A>T', 'Var', (123, 132)) ('phaeochromocytomas', 'Disease', (3, 21)) ('patients', 'Species', '9606', (41, 49)) ('c.1129A>T', 'Var', (150, 159)) ('p.Lys364Met', 'Var', (134, 145)) ('c', 'Chemical', 'MESH:D002244', (123, 124)) ('EPAS1', 'Gene', (71, 76)) ('p.Lys364Met', 'SUBSTITUTION', 'None', (134, 145)) ('c', 'Chemical', 'MESH:D002244', (90, 91)) ('c.1091A>T', 'SUBSTITUTION', 'None', (123, 132)) 64758 33114456 Contrastingly, in paragangliomas, 7% (n = 1/14) of patients had EPAS1 mutations and only the c.1091A>T; p.Lys364Met mutation was detected. ('mutations', 'Var', (70, 79)) ('EPAS1', 'Gene', (64, 69)) ('p.Lys364Met', 'Var', (104, 115)) ('c', 'Chemical', 'MESH:D002244', (93, 94)) ('paraganglioma', 'Phenotype', 'HP:0002668', (18, 31)) ('c.1091A>T', 'Var', (93, 102)) ('paragangliomas', 'Disease', (18, 32)) ('paragangliomas', 'Disease', 'MESH:D010235', (18, 32)) ('patients', 'Species', '9606', (51, 59)) ('paragangliomas', 'Phenotype', 'HP:0002668', (18, 32)) ('p.Lys364Met', 'SUBSTITUTION', 'None', (104, 115)) ('c.1091A>T', 'SUBSTITUTION', 'None', (93, 102)) ('c', 'Chemical', 'MESH:D002244', (133, 134)) 64759 33114456 In silico analysis revealed that the p.Lys364Met mutation has pathological potential based on the functionality of the protein, whereas the p.Ser377Cys mutation was predicted to be neutral or tolerated. ('p.Ser377Cys', 'Var', (140, 151)) ('p', 'Chemical', 'MESH:D010758', (140, 141)) ('p', 'Chemical', 'MESH:D010758', (165, 166)) ('p', 'Chemical', 'MESH:D010758', (119, 120)) ('p', 'Chemical', 'MESH:D010758', (62, 63)) ('p.Lys364Met', 'SUBSTITUTION', 'None', (37, 48)) ('c', 'Chemical', 'MESH:D002244', (7, 8)) ('c', 'Chemical', 'MESH:D002244', (170, 171)) ('c', 'Chemical', 'MESH:D002244', (101, 102)) ('p', 'Chemical', 'MESH:D010758', (37, 38)) ('p.Lys364Met', 'Var', (37, 48)) ('p', 'Chemical', 'MESH:D010758', (75, 76)) ('p.Ser377Cys', 'SUBSTITUTION', 'None', (140, 151)) ('pathological potential', 'CPA', (62, 84)) ('c', 'Chemical', 'MESH:D002244', (71, 72)) 64761 33114456 Most of the patients with EPAS1 mutations exhibited aberrant DNA changes, mRNA and protein overexpression. ('patients', 'Species', '9606', (12, 20)) ('exhibited', 'Reg', (42, 51)) ('EPAS1', 'Gene', (26, 31)) ('overexpression', 'PosReg', (91, 105)) ('p', 'Chemical', 'MESH:D010758', (83, 84)) ('p', 'Chemical', 'MESH:D010758', (97, 98)) ('DNA changes', 'MPA', (61, 72)) ('c', 'Chemical', 'MESH:D002244', (65, 66)) ('mutations', 'Var', (32, 41)) ('p', 'Chemical', 'MESH:D010758', (12, 13)) 64762 33114456 In addition, these alterations of EPAS1 were associated with tumour weight and location. ('tumour weight', 'Disease', 'MESH:D009369', (61, 74)) ('c', 'Chemical', 'MESH:D002244', (49, 50)) ('associated', 'Reg', (45, 55)) ('alterations', 'Var', (19, 30)) ('tumour', 'Phenotype', 'HP:0002664', (61, 67)) ('c', 'Chemical', 'MESH:D002244', (81, 82)) ('EPAS1', 'Protein', (34, 39)) ('tumour weight', 'Disease', (61, 74)) 64763 33114456 Thus, the molecular dysregulation of EPAS1 could play crucial roles in the pathogenesis of phaeochromocytomas and paragangliomas. ('p', 'Chemical', 'MESH:D010758', (75, 76)) ('p', 'Chemical', 'MESH:D010758', (91, 92)) ('c', 'Chemical', 'MESH:D002244', (14, 15)) ('paragangliomas', 'Phenotype', 'HP:0002668', (114, 128)) ('c', 'Chemical', 'MESH:D002244', (96, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (114, 127)) ('dysregulation', 'Var', (20, 33)) ('p', 'Chemical', 'MESH:D010758', (49, 50)) ('EPAS1', 'Protein', (37, 42)) ('p', 'Chemical', 'MESH:D010758', (114, 115)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (91, 128)) ('c', 'Chemical', 'MESH:D002244', (43, 44)) ('roles', 'Reg', (62, 67)) ('c', 'Chemical', 'MESH:D002244', (57, 58)) ('play', 'Reg', (49, 53)) ('c', 'Chemical', 'MESH:D002244', (54, 55)) ('c', 'Chemical', 'MESH:D002244', (102, 103)) 64773 33114456 Cluster 2 involves genetic mutations associated with the abnormal activation of kinase signalling pathway, e.g., NF1, KIF1Bbeta, MAX, RET, TMEM127. ('mutations', 'Var', (27, 36)) ('KIF1Bbeta', 'Gene', (118, 127)) ('c', 'Chemical', 'MESH:D002244', (25, 26)) ('RET', 'Gene', (134, 137)) ('abnormal activation of kinase signalling', 'Phenotype', 'HP:0012175', (57, 97)) ('c', 'Chemical', 'MESH:D002244', (41, 42)) ('NF1', 'Gene', (113, 116)) ('TMEM127', 'Gene', (139, 146)) ('TMEM127', 'Gene', '55654', (139, 146)) ('NF1', 'Gene', '4763', (113, 116)) ('c', 'Chemical', 'MESH:D002244', (67, 68)) ('kinase signalling pathway', 'Pathway', (80, 105)) ('p', 'Chemical', 'MESH:D010758', (98, 99)) ('RET', 'Gene', '5979', (134, 137)) ('activation', 'PosReg', (66, 76)) 64774 33114456 Additionally, activating mutations of Wnt-signalling pathway or its components, including somatic mutations of CSDE1 (cold shock domain containing E1) and MAML3 (mastermind like transcriptional coactivator 3) genes are known as cluster 3 in phaeochromocytomas and paragangliomas. ('c', 'Chemical', 'MESH:D002244', (136, 137)) ('cold shock domain containing E1', 'Gene', '7812', (118, 149)) ('c', 'Chemical', 'MESH:D002244', (96, 97)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (241, 278)) ('c', 'Chemical', 'MESH:D002244', (15, 16)) ('c', 'Chemical', 'MESH:D002244', (183, 184)) ('c', 'Chemical', 'MESH:D002244', (246, 247)) ('p', 'Chemical', 'MESH:D010758', (53, 54)) ('cold shock domain containing E1', 'Gene', (118, 149)) ('mutations', 'Var', (25, 34)) ('c', 'Chemical', 'MESH:D002244', (126, 127)) ('CSDE1', 'Gene', (111, 116)) ('c', 'Chemical', 'MESH:D002244', (118, 119)) ('Wnt-signalling pathway', 'Pathway', (38, 60)) ('p', 'Chemical', 'MESH:D010758', (186, 187)) ('MAML3', 'Gene', (155, 160)) ('mastermind like transcriptional coactivator 3', 'Gene', (162, 207)) ('c', 'Chemical', 'MESH:D002244', (252, 253)) ('c', 'Chemical', 'MESH:D002244', (197, 198)) ('c', 'Chemical', 'MESH:D002244', (228, 229)) ('p', 'Chemical', 'MESH:D010758', (264, 265)) ('p', 'Chemical', 'MESH:D010758', (241, 242)) ('CSDE1', 'Gene', '7812', (111, 116)) ('activating', 'PosReg', (14, 24)) ('c', 'Chemical', 'MESH:D002244', (194, 195)) ('MAML3', 'Gene', '55534', (155, 160)) ('c', 'Chemical', 'MESH:D002244', (82, 83)) ('c', 'Chemical', 'MESH:D002244', (68, 69)) ('mutations', 'Var', (98, 107)) ('paragangliomas', 'Phenotype', 'HP:0002668', (264, 278)) ('mastermind like transcriptional coactivator 3', 'Gene', '55534', (162, 207)) ('paraganglioma', 'Phenotype', 'HP:0002668', (264, 277)) ('shock', 'Phenotype', 'HP:0031273', (123, 128)) ('p', 'Chemical', 'MESH:D010758', (71, 72)) 64776 33114456 Recent studies have demonstrated that mutations in endothelial PAS domain-containing protein 1 (EPAS1) is associated with manifestations of phaeochromocytomas and paragangliomas. ('c', 'Chemical', 'MESH:D002244', (2, 3)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (140, 177)) ('associated', 'Reg', (106, 116)) ('c', 'Chemical', 'MESH:D002244', (151, 152)) ('endothelial PAS domain-containing protein 1', 'Gene', '2034', (51, 94)) ('c', 'Chemical', 'MESH:D002244', (145, 146)) ('c', 'Chemical', 'MESH:D002244', (110, 111)) ('EPAS1', 'Gene', (96, 101)) ('paraganglioma', 'Phenotype', 'HP:0002668', (163, 176)) ('endothelial PAS domain-containing protein 1', 'Gene', (51, 94)) ('paragangliomas', 'Phenotype', 'HP:0002668', (163, 177)) ('c', 'Chemical', 'MESH:D002244', (74, 75)) ('mutations', 'Var', (38, 47)) 64778 33114456 The identification of somatic mutations affecting EPAS1 in phaeochromocytomas and paragangliomas led to the hypothesis that the stabilization of HIF-alpha plays crucial roles in the development of chromaffin tumours through the phenomenon known as pseudo-hypoxia. ('paragangliomas', 'Phenotype', 'HP:0002668', (82, 96)) ('p', 'Chemical', 'MESH:D010758', (151, 152)) ('p', 'Chemical', 'MESH:D010758', (110, 111)) ('hypoxia', 'Disease', (255, 262)) ('p', 'Chemical', 'MESH:D010758', (228, 229)) ('stabilization', 'MPA', (128, 141)) ('c', 'Chemical', 'MESH:D002244', (64, 65)) ('p', 'Chemical', 'MESH:D010758', (188, 189)) ('p', 'Chemical', 'MESH:D010758', (59, 60)) ('tumours', 'Disease', (208, 215)) ('c', 'Chemical', 'MESH:D002244', (70, 71)) ('p', 'Chemical', 'MESH:D010758', (155, 156)) ('hypoxia', 'Disease', 'MESH:D000860', (255, 262)) ('tumour', 'Phenotype', 'HP:0002664', (208, 214)) ('c', 'Chemical', 'MESH:D002244', (197, 198)) ('p', 'Chemical', 'MESH:D010758', (82, 83)) ('tumours', 'Phenotype', 'HP:0002664', (208, 215)) ('p', 'Chemical', 'MESH:D010758', (248, 249)) ('c', 'Chemical', 'MESH:D002244', (164, 165)) ('c', 'Chemical', 'MESH:D002244', (28, 29)) ('EPAS1', 'Gene', (50, 55)) ('p', 'Chemical', 'MESH:D010758', (257, 258)) ('tumours', 'Disease', 'MESH:D009369', (208, 215)) ('mutations', 'Var', (30, 39)) ('c', 'Chemical', 'MESH:D002244', (12, 13)) ('c', 'Chemical', 'MESH:D002244', (44, 45)) ('c', 'Chemical', 'MESH:D002244', (161, 162)) ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (59, 96)) ('men', 'Species', '9606', (189, 192)) ('chromaffin tumours', 'Phenotype', 'HP:0002666', (197, 215)) ('chromaffin', 'Chemical', '-', (197, 207)) ('men', 'Species', '9606', (233, 236)) 64779 33114456 In a pseudo-hypoxic state, abnormal HIF-alpha function enhances cell proliferation and tumour growth. ('abnormal', 'Var', (27, 35)) ('c', 'Chemical', 'MESH:D002244', (64, 65)) ('p', 'Chemical', 'MESH:D010758', (5, 6)) ('cell proliferation', 'CPA', (64, 82)) ('HIF-alpha', 'Protein', (36, 45)) ('p', 'Chemical', 'MESH:D010758', (14, 15)) ('p', 'Chemical', 'MESH:D010758', (42, 43)) ('p', 'Chemical', 'MESH:D010758', (69, 70)) ('c', 'Chemical', 'MESH:D002244', (18, 19)) ('c', 'Chemical', 'MESH:D002244', (49, 50)) ('tumour growth', 'Disease', (87, 100)) ('tumour', 'Phenotype', 'HP:0002664', (87, 93)) ('tumour growth', 'Disease', 'MESH:D006130', (87, 100)) ('enhances', 'PosReg', (55, 63)) ('c', 'Chemical', 'MESH:D002244', (60, 61)) 64780 33114456 So far, EPAS1 mutations have been reported in a few phaeochromocytomas and paragangliomas. ('EPAS1', 'Gene', (8, 13)) ('paraganglioma', 'Phenotype', 'HP:0002668', (75, 88)) ('reported', 'Reg', (34, 42)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (52, 89)) ('p', 'Chemical', 'MESH:D010758', (52, 53)) ('p', 'Chemical', 'MESH:D010758', (36, 37)) ('p', 'Chemical', 'MESH:D010758', (75, 76)) ('mutations', 'Var', (14, 23)) ('paragangliomas', 'Phenotype', 'HP:0002668', (75, 89)) 64781 33114456 Therefore, further research on the effects of EPAS1 mutation on gene expression in a large cohort of patients with phaeochromocytomas and paragangliomas is critical to unveil its roles in the phaeochromocytomas/paragangliomas pathogenesis. ('c', 'Chemical', 'MESH:D002244', (120, 121)) ('c', 'Chemical', 'MESH:D002244', (25, 26)) ('p', 'Chemical', 'MESH:D010758', (101, 102)) ('phaeochromocytomas/paragangliomas', 'Disease', 'MESH:D010235', (192, 225)) ('mutation', 'Var', (52, 60)) ('p', 'Chemical', 'MESH:D010758', (226, 227)) ('c', 'Chemical', 'MESH:D002244', (39, 40)) ('patients', 'Species', '9606', (101, 109)) ('c', 'Chemical', 'MESH:D002244', (126, 127)) ('p', 'Chemical', 'MESH:D010758', (138, 139)) ('p', 'Chemical', 'MESH:D010758', (115, 116)) ('paraganglioma', 'Phenotype', 'HP:0002668', (211, 224)) ('p', 'Chemical', 'MESH:D010758', (211, 212)) ('c', 'Chemical', 'MESH:D002244', (197, 198)) ('c', 'Chemical', 'MESH:D002244', (203, 204)) ('paraganglioma', 'Phenotype', 'HP:0002668', (138, 151)) ('EPAS1', 'Gene', (46, 51)) ('c', 'Chemical', 'MESH:D002244', (156, 157)) ('phaeochromocytomas/paragangliomas', 'Disease', (192, 225)) ('paragangliomas', 'Phenotype', 'HP:0002668', (211, 225)) ('c', 'Chemical', 'MESH:D002244', (91, 92)) ('c', 'Chemical', 'MESH:D002244', (161, 162)) ('p', 'Chemical', 'MESH:D010758', (192, 193)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (115, 152)) ('paragangliomas', 'Phenotype', 'HP:0002668', (138, 152)) ('p', 'Chemical', 'MESH:D010758', (71, 72)) 64782 33114456 Herein, we investigated mutations in EPAS1 in a cohort of phaeochromocytoma (n = 57) or paraganglioma (n = 14) and have described the clinical, molecular and genetic features of patients carrying somatic EPAS1 mutations. ('mutations', 'Var', (210, 219)) ('c', 'Chemical', 'MESH:D002244', (63, 64)) ('c', 'Chemical', 'MESH:D002244', (48, 49)) ('mutations', 'Var', (24, 33)) ('c', 'Chemical', 'MESH:D002244', (134, 135)) ('patients', 'Species', '9606', (178, 186)) ('phaeochromocytoma', 'Disease', (58, 75)) ('paraganglioma', 'Disease', (88, 101)) ('c', 'Chemical', 'MESH:D002244', (164, 165)) ('c', 'Chemical', 'MESH:D002244', (69, 70)) ('paraganglioma', 'Disease', 'MESH:D010235', (88, 101)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (58, 75)) ('EPAS1', 'Gene', (37, 42)) ('c', 'Chemical', 'MESH:D002244', (139, 140)) ('c', 'Chemical', 'MESH:D002244', (148, 149)) ('c', 'Chemical', 'MESH:D002244', (187, 188)) ('c', 'Chemical', 'MESH:D002244', (123, 124)) ('investigated', 'Reg', (11, 23)) ('c', 'Chemical', 'MESH:D002244', (202, 203)) ('paraganglioma', 'Phenotype', 'HP:0002668', (88, 101)) ('EPAS1', 'Gene', (204, 209)) 64798 33114456 Moreover, six patients with phaeochromocytomas harbouring EPAS1 mutation had shown catecholamine secretion. ('c', 'Chemical', 'MESH:D002244', (33, 34)) ('mutation', 'Var', (64, 72)) ('catecholamine', 'Chemical', 'MESH:D002395', (83, 96)) ('c', 'Chemical', 'MESH:D002244', (83, 84)) ('c', 'Chemical', 'MESH:D002244', (87, 88)) ('EPAS1', 'Gene', (58, 63)) ('catecholamine secretion', 'MPA', (83, 106)) ('phaeochromocytomas', 'Disease', (28, 46)) ('patients', 'Species', '9606', (14, 22)) ('c', 'Chemical', 'MESH:D002244', (39, 40)) ('phaeochromocytomas', 'Disease', 'MESH:D010673', (28, 46)) ('c', 'Chemical', 'MESH:D002244', (99, 100)) 64815 33114456 HRM analysis of exon 1 and exon 9 of EPAS1 gene sequence were carried out to screen the possible mutations in genomic DNA extracted from 71 tumours and 10 control tissues. ('tumour', 'Phenotype', 'HP:0002664', (140, 146)) ('mutations', 'Var', (97, 106)) ('c', 'Chemical', 'MESH:D002244', (127, 128)) ('c', 'Chemical', 'MESH:D002244', (62, 63)) ('tumours', 'Phenotype', 'HP:0002664', (140, 147)) ('c', 'Chemical', 'MESH:D002244', (155, 156)) ('tumours', 'Disease', 'MESH:D009369', (140, 147)) ('p', 'Chemical', 'MESH:D010758', (88, 89)) ('tumours', 'Disease', (140, 147)) ('c', 'Chemical', 'MESH:D002244', (116, 117)) ('c', 'Chemical', 'MESH:D002244', (78, 79)) ('c', 'Chemical', 'MESH:D002244', (54, 55)) ('EPAS1', 'Gene', (37, 42)) 64842 33114456 In this study, a fold change of more than 2 was considered as DNA amplification or high EPAS1 expression, whereas fold change of less 0.5 was considered as DNA deletion or low EPAS1 expression. ('p', 'Chemical', 'MESH:D010758', (68, 69)) ('c', 'Chemical', 'MESH:D002244', (142, 143)) ('p', 'Chemical', 'MESH:D010758', (96, 97)) ('c', 'Chemical', 'MESH:D002244', (48, 49)) ('low', 'NegReg', (172, 175)) ('EPAS1', 'Protein', (88, 93)) ('p', 'Chemical', 'MESH:D010758', (184, 185)) ('expression', 'MPA', (94, 104)) ('high', 'Var', (83, 87)) ('c', 'Chemical', 'MESH:D002244', (73, 74)) ('c', 'Chemical', 'MESH:D002244', (22, 23)) ('c', 'Chemical', 'MESH:D002244', (119, 120)) 64843 33114456 The possible impact of EPAS1 mutation on protein expression in mutated (n = 8) and non-mutated (n = 8) tissues samples of phaeochromocytomas and paragangliomas was investigated by immunofluorescence analysis. ('mutation', 'Var', (29, 37)) ('p', 'Chemical', 'MESH:D010758', (4, 5)) ('c', 'Chemical', 'MESH:D002244', (196, 197)) ('c', 'Chemical', 'MESH:D002244', (127, 128)) ('c', 'Chemical', 'MESH:D002244', (17, 18)) ('protein expression', 'MPA', (41, 59)) ('p', 'Chemical', 'MESH:D010758', (41, 42)) ('p', 'Chemical', 'MESH:D010758', (145, 146)) ('p', 'Chemical', 'MESH:D010758', (51, 52)) ('p', 'Chemical', 'MESH:D010758', (114, 115)) ('paragangliomas', 'Phenotype', 'HP:0002668', (145, 159)) ('p', 'Chemical', 'MESH:D010758', (15, 16)) ('c', 'Chemical', 'MESH:D002244', (193, 194)) ('paraganglioma', 'Phenotype', 'HP:0002668', (145, 158)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (122, 159)) ('p', 'Chemical', 'MESH:D010758', (122, 123)) ('EPAS1', 'Gene', (23, 28)) ('c', 'Chemical', 'MESH:D002244', (133, 134)) 64849 33114456 The generated signals from EPAS1 was categorised as "0" (0% to less than 10%), "+" (10% to <30%), "++" (30% to <50%) and "+++" (>50%) according to the percentage and intensity of EPAS1 protein staining. ('c', 'Chemical', 'MESH:D002244', (136, 137)) ('p', 'Chemical', 'MESH:D010758', (185, 186)) ('c', 'Chemical', 'MESH:D002244', (154, 155)) ('p', 'Chemical', 'MESH:D010758', (151, 152)) ('+++" (>50%', 'Var', (122, 132)) ('c', 'Chemical', 'MESH:D002244', (135, 136)) ('EPAS1', 'Gene', (27, 32)) ('c', 'Chemical', 'MESH:D002244', (37, 38)) ('++" (30% to <50%', 'Var', (99, 115)) 64855 33114456 In the present study, genetic alterations in the EPAS1 sequence were noted in 12% (7/57) of phaeochromocytoma tumours (Table 1). ('noted', 'Reg', (69, 74)) ('c', 'Chemical', 'MESH:D002244', (28, 29)) ('p', 'Chemical', 'MESH:D010758', (7, 8)) ('phaeochromocytoma tumours', 'Disease', 'MESH:D009369', (92, 117)) ('c', 'Chemical', 'MESH:D002244', (97, 98)) ('c', 'Chemical', 'MESH:D002244', (103, 104)) ('tumour', 'Phenotype', 'HP:0002664', (110, 116)) ('genetic alterations', 'Var', (22, 41)) ('c', 'Chemical', 'MESH:D002244', (61, 62)) ('tumours', 'Phenotype', 'HP:0002664', (110, 117)) ('phaeochromocytoma tumours', 'Phenotype', 'HP:0002666', (92, 117)) ('phaeochromocytoma tumours', 'Disease', (92, 117)) ('p', 'Chemical', 'MESH:D010758', (92, 93)) ('EPAS1', 'Gene', (49, 54)) 64856 33114456 Two novel mutations c.1091A>T and c.1129A>T were identified in exon 9 (Figure 2). ('c.1091A>T', 'SUBSTITUTION', 'None', (20, 29)) ('c.1091A>T', 'Var', (20, 29)) ('c.1129A>T', 'Var', (34, 43)) ('c.1129A>T', 'SUBSTITUTION', 'None', (34, 43)) 64857 33114456 Both mutations were somatic heterozygous missense mutations (p.Lys364Met and P.Ser377Cys). ('Ser377Cys', 'Chemical', '-', (79, 88)) ('p.Lys364Met', 'SUBSTITUTION', 'None', (61, 72)) ('P.Ser377Cys', 'Var', (77, 88)) ('p.Lys364Met', 'Var', (61, 72)) ('c', 'Chemical', 'MESH:D002244', (26, 27)) 64858 33114456 In paragangliomas, 7% (1/14) of patients had shown EPAS1 mutations. ('paragangliomas', 'Disease', (3, 17)) ('paragangliomas', 'Disease', 'MESH:D010235', (3, 17)) ('patients', 'Species', '9606', (32, 40)) ('paraganglioma', 'Phenotype', 'HP:0002668', (3, 16)) ('paragangliomas', 'Phenotype', 'HP:0002668', (3, 17)) ('mutations', 'Var', (57, 66)) ('EPAS1', 'Gene', (51, 56)) 64859 33114456 The only c.1091A>T (p.Lys364Met) was identified tumour tissues in paraganglioma (Table 1). ('paraganglioma', 'Disease', 'MESH:D010235', (66, 79)) ('tumour', 'Phenotype', 'HP:0002664', (48, 54)) ('p.Lys364Met', 'Var', (20, 31)) ('c.1091A>T', 'Var', (9, 18)) ('paraganglioma', 'Phenotype', 'HP:0002668', (66, 79)) ('tumour', 'Disease', 'MESH:D009369', (48, 54)) ('tumour', 'Disease', (48, 54)) ('paraganglioma', 'Disease', (66, 79)) ('p.Lys364Met', 'SUBSTITUTION', 'None', (20, 31)) ('c.1091A>T', 'SUBSTITUTION', 'None', (9, 18)) 64861 33114456 In silico analysis predicted that the identified mutation c.1091A>T (p.Lys364Met) was disease causing as it could cause changes in protein structure and function with pathological consequences (Table 1). ('c', 'Chemical', 'MESH:D002244', (120, 121)) ('protein structure', 'MPA', (131, 148)) ('c', 'Chemical', 'MESH:D002244', (24, 25)) ('p.Lys364Met', 'Var', (69, 80)) ('p.Lys364Met', 'SUBSTITUTION', 'None', (69, 80)) ('function', 'MPA', (153, 161)) ('c', 'Chemical', 'MESH:D002244', (189, 190)) ('p', 'Chemical', 'MESH:D010758', (69, 70)) ('c', 'Chemical', 'MESH:D002244', (143, 144)) ('p', 'Chemical', 'MESH:D010758', (131, 132)) ('c', 'Chemical', 'MESH:D002244', (7, 8)) ('c', 'Chemical', 'MESH:D002244', (180, 181)) ('c', 'Chemical', 'MESH:D002244', (94, 95)) ('p', 'Chemical', 'MESH:D010758', (19, 20)) ('c.1091A>T', 'Var', (58, 67)) ('c', 'Chemical', 'MESH:D002244', (108, 109)) ('c', 'Chemical', 'MESH:D002244', (156, 157)) ('p', 'Chemical', 'MESH:D010758', (167, 168)) ('c', 'Chemical', 'MESH:D002244', (58, 59)) ('cause changes', 'Reg', (114, 127)) ('c', 'Chemical', 'MESH:D002244', (176, 177)) ('c', 'Chemical', 'MESH:D002244', (114, 115)) ('c.1091A>T', 'SUBSTITUTION', 'None', (58, 67)) 64864 33114456 Patients with phaeochromocytomas bearing mutation were four males and four females with a mean age of 41 years (age range 22-58). ('mutation', 'Var', (41, 49)) ('phaeochromocytomas', 'Disease', (14, 32)) ('phaeochromocytomas', 'Disease', 'MESH:D010673', (14, 32)) ('Patients', 'Species', '9606', (0, 8)) 64865 33114456 The mutations noted in this study were from functioning tumours. ('tumours', 'Disease', 'MESH:D009369', (56, 63)) ('tumours', 'Disease', (56, 63)) ('tumour', 'Phenotype', 'HP:0002664', (56, 62)) ('tumours', 'Phenotype', 'HP:0002664', (56, 63)) ('mutations', 'Var', (4, 13)) ('c', 'Chemical', 'MESH:D002244', (47, 48)) 64866 33114456 Among the seven patients with phaeochromocytoma harbouring mutated EPAS1, two patients had clinical confirmation of neurofibromatosis 1 (case 94 and case 122). ('c', 'Chemical', 'MESH:D002244', (137, 138)) ('EPAS1', 'Gene', (67, 72)) ('c', 'Chemical', 'MESH:D002244', (96, 97)) ('phaeochromocytoma', 'Disease', (30, 47)) ('c', 'Chemical', 'MESH:D002244', (41, 42)) ('c', 'Chemical', 'MESH:D002244', (35, 36)) ('c', 'Chemical', 'MESH:D002244', (100, 101)) ('patients', 'Species', '9606', (16, 24)) ('patients', 'Species', '9606', (78, 86)) ('c', 'Chemical', 'MESH:D002244', (149, 150)) ('neurofibromatosis 1', 'Gene', '4763', (116, 135)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (30, 47)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (116, 133)) ('neurofibromatosis 1', 'Gene', (116, 135)) ('mutated', 'Var', (59, 66)) ('c', 'Chemical', 'MESH:D002244', (91, 92)) 64867 33114456 Table 2 revealed the associations of identified mutations with the clinical and pathological factors of patients with phaeochromocytomas/paragangliomas (Table 2). ('p', 'Chemical', 'MESH:D010758', (137, 138)) ('c', 'Chemical', 'MESH:D002244', (89, 90)) ('c', 'Chemical', 'MESH:D002244', (123, 124)) ('phaeochromocytomas/paragangliomas', 'Disease', 'MESH:D010235', (118, 151)) ('c', 'Chemical', 'MESH:D002244', (129, 130)) ('paragangliomas', 'Phenotype', 'HP:0002668', (137, 151)) ('c', 'Chemical', 'MESH:D002244', (25, 26)) ('phaeochromocytomas/paragangliomas', 'Disease', (118, 151)) ('c', 'Chemical', 'MESH:D002244', (72, 73)) ('p', 'Chemical', 'MESH:D010758', (104, 105)) ('paraganglioma', 'Phenotype', 'HP:0002668', (137, 150)) ('p', 'Chemical', 'MESH:D010758', (80, 81)) ('c', 'Chemical', 'MESH:D002244', (67, 68)) ('p', 'Chemical', 'MESH:D010758', (118, 119)) ('c', 'Chemical', 'MESH:D002244', (95, 96)) ('patients', 'Species', '9606', (104, 112)) ('mutations', 'Var', (48, 57)) ('associations', 'Interaction', (21, 33)) 64868 33114456 EPAS1 mutations occur in tumours with higher tumour weight (>50 gm) (Table 2; p = 0.0001). ('EPAS1', 'Gene', (0, 5)) ('tumour', 'Phenotype', 'HP:0002664', (25, 31)) ('tumour weight', 'Disease', (45, 58)) ('tumour', 'Phenotype', 'HP:0002664', (45, 51)) ('tumours', 'Phenotype', 'HP:0002664', (25, 32)) ('tumours', 'Disease', 'MESH:D009369', (25, 32)) ('tumour weight', 'Disease', 'MESH:D009369', (45, 58)) ('p', 'Chemical', 'MESH:D010758', (78, 79)) ('tumours', 'Disease', (25, 32)) ('mutations', 'Var', (6, 15)) 64869 33114456 Moreover, EPAS1 mutations were associated with the large tumour size (>=50 mm). ('tumour', 'Disease', (57, 63)) ('c', 'Chemical', 'MESH:D002244', (35, 36)) ('mutations', 'Var', (16, 25)) ('EPAS1', 'Gene', (10, 15)) ('associated', 'Reg', (31, 41)) ('tumour', 'Phenotype', 'HP:0002664', (57, 63)) ('tumour', 'Disease', 'MESH:D009369', (57, 63)) 64870 33114456 Most of the mutated samples (7 out of 8) had larger tumours (Table 2; p = 0.044). ('tumours', 'Disease', (52, 59)) ('tumour', 'Phenotype', 'HP:0002664', (52, 58)) ('mutated', 'Var', (12, 19)) ('p', 'Chemical', 'MESH:D010758', (70, 71)) ('tumours', 'Phenotype', 'HP:0002664', (52, 59)) ('p', 'Chemical', 'MESH:D010758', (23, 24)) ('larger', 'PosReg', (45, 51)) ('tumours', 'Disease', 'MESH:D009369', (52, 59)) 64871 33114456 Other than this, there was no association between the mutations in EPAS1 with patients' age, sex, race or the side, location and presence of tumour metastasis in patients with phaeochromocytomas/paragangliomas. ('patients', 'Species', '9606', (78, 86)) ('c', 'Chemical', 'MESH:D002244', (135, 136)) ('p', 'Chemical', 'MESH:D010758', (195, 196)) ('c', 'Chemical', 'MESH:D002244', (181, 182)) ('phaeochromocytomas/paragangliomas', 'Disease', 'MESH:D010235', (176, 209)) ('EPAS1', 'Gene', (67, 72)) ('mutations', 'Var', (54, 63)) ('p', 'Chemical', 'MESH:D010758', (162, 163)) ('c', 'Chemical', 'MESH:D002244', (118, 119)) ('tumour metastasis', 'Disease', (141, 158)) ('patients', 'Species', '9606', (162, 170)) ('paragangliomas', 'Phenotype', 'HP:0002668', (195, 209)) ('paraganglioma', 'Phenotype', 'HP:0002668', (195, 208)) ('p', 'Chemical', 'MESH:D010758', (176, 177)) ('c', 'Chemical', 'MESH:D002244', (100, 101)) ('c', 'Chemical', 'MESH:D002244', (187, 188)) ('p', 'Chemical', 'MESH:D010758', (129, 130)) ('c', 'Chemical', 'MESH:D002244', (34, 35)) ('tumour metastasis', 'Disease', 'MESH:D009362', (141, 158)) ('tumour', 'Phenotype', 'HP:0002664', (141, 147)) ('phaeochromocytomas/paragangliomas', 'Disease', (176, 209)) ('p', 'Chemical', 'MESH:D010758', (78, 79)) 64872 33114456 Amongst the phaeochromocytomas and paragangliomas (n = 71), 79% (56/71) showed DNA number amplification, whereas 21% (15/71) had DNA number deletion. ('c', 'Chemical', 'MESH:D002244', (17, 18)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (12, 49)) ('DNA number deletion', 'Var', (129, 148)) ('c', 'Chemical', 'MESH:D002244', (97, 98)) ('paragangliomas', 'Phenotype', 'HP:0002668', (35, 49)) ('p', 'Chemical', 'MESH:D010758', (35, 36)) ('p', 'Chemical', 'MESH:D010758', (12, 13)) ('paraganglioma', 'Phenotype', 'HP:0002668', (35, 48)) ('c', 'Chemical', 'MESH:D002244', (23, 24)) ('p', 'Chemical', 'MESH:D010758', (92, 93)) ('DNA number', 'MPA', (79, 89)) 64887 33114456 On the contrary, in EPAS1 mutation-negative tumour tissues (n = 8), 75% of samples showed no change or low expression and 25% of patients had shown high EPAS1 protein expression (Figure 1). ('p', 'Chemical', 'MESH:D010758', (129, 130)) ('tumour', 'Disease', 'MESH:D009369', (44, 50)) ('EPAS1 protein', 'Protein', (153, 166)) ('EPAS1', 'Gene', (20, 25)) ('c', 'Chemical', 'MESH:D002244', (7, 8)) ('p', 'Chemical', 'MESH:D010758', (159, 160)) ('expression', 'MPA', (107, 117)) ('tumour', 'Disease', (44, 50)) ('c', 'Chemical', 'MESH:D002244', (93, 94)) ('patients', 'Species', '9606', (129, 137)) ('low', 'NegReg', (103, 106)) ('p', 'Chemical', 'MESH:D010758', (169, 170)) ('p', 'Chemical', 'MESH:D010758', (78, 79)) ('p', 'Chemical', 'MESH:D010758', (109, 110)) ('tumour', 'Phenotype', 'HP:0002664', (44, 50)) ('mutation-negative', 'Var', (26, 43)) 64890 33114456 A statistically significant positive correlation of EPAS1 DNA copy number changes and mRNA expression were noted in the present study (r = +0.538; p = 0.009, Fisher exact test). ('p', 'Chemical', 'MESH:D010758', (120, 121)) ('c', 'Chemical', 'MESH:D002244', (168, 169)) ('p', 'Chemical', 'MESH:D010758', (147, 148)) ('c', 'Chemical', 'MESH:D002244', (10, 11)) ('p', 'Chemical', 'MESH:D010758', (28, 29)) ('p', 'Chemical', 'MESH:D010758', (93, 94)) ('c', 'Chemical', 'MESH:D002244', (62, 63)) ('EPAS1', 'Gene', (52, 57)) ('mRNA expression', 'MPA', (86, 101)) ('c', 'Chemical', 'MESH:D002244', (37, 38)) ('c', 'Chemical', 'MESH:D002244', (74, 75)) ('c', 'Chemical', 'MESH:D002244', (23, 24)) ('copy number changes', 'Var', (62, 81)) ('p', 'Chemical', 'MESH:D010758', (64, 65)) 64891 33114456 As shown in Figure 5A, 70.2% (40/57) copy number amplified tumour samples had higher EPAS1 mRNA expression, whereas EPAS1 mRNA downregulation was only noted in 71.5% (5/7) of the EPAS1 DNA number deletion tumours (Figure 5A). ('tumour', 'Disease', 'MESH:D009369', (205, 211)) ('tumours', 'Disease', 'MESH:D009369', (205, 212)) ('tumour', 'Disease', (205, 211)) ('copy', 'Var', (37, 41)) ('tumours', 'Disease', (205, 212)) ('higher', 'PosReg', (78, 84)) ('EPAS1', 'Gene', (179, 184)) ('p', 'Chemical', 'MESH:D010758', (69, 70)) ('tumour', 'Phenotype', 'HP:0002664', (59, 65)) ('p', 'Chemical', 'MESH:D010758', (51, 52)) ('tumour', 'Phenotype', 'HP:0002664', (205, 211)) ('tumours', 'Phenotype', 'HP:0002664', (205, 212)) ('p', 'Chemical', 'MESH:D010758', (39, 40)) ('c', 'Chemical', 'MESH:D002244', (37, 38)) ('tumour', 'Disease', 'MESH:D009369', (59, 65)) ('EPAS1', 'Protein', (85, 90)) ('p', 'Chemical', 'MESH:D010758', (98, 99)) ('tumour', 'Disease', (59, 65)) 64892 33114456 The associations of EPAS1 mRNA expressions with copy number variation are presented in Figure 5B. ('c', 'Chemical', 'MESH:D002244', (48, 49)) ('EPAS1', 'Gene', (20, 25)) ('p', 'Chemical', 'MESH:D010758', (50, 51)) ('copy number variation', 'Var', (48, 69)) ('c', 'Chemical', 'MESH:D002244', (8, 9)) ('p', 'Chemical', 'MESH:D010758', (74, 75)) ('p', 'Chemical', 'MESH:D010758', (33, 34)) ('associations', 'Interaction', (4, 16)) 64893 33114456 Patients with EPAS1 DNA copy number amplification exhibited significantly higher mRNA expression in comparison to no change or deletion groups (Figure 5B). ('p', 'Chemical', 'MESH:D010758', (140, 141)) ('copy number amplification', 'Var', (24, 49)) ('p', 'Chemical', 'MESH:D010758', (38, 39)) ('mRNA expression', 'MPA', (81, 96)) ('c', 'Chemical', 'MESH:D002244', (24, 25)) ('higher', 'PosReg', (74, 80)) ('c', 'Chemical', 'MESH:D002244', (117, 118)) ('p', 'Chemical', 'MESH:D010758', (103, 104)) ('c', 'Chemical', 'MESH:D002244', (100, 101)) ('EPAS1', 'Gene', (14, 19)) ('Patients', 'Species', '9606', (0, 8)) ('c', 'Chemical', 'MESH:D002244', (67, 68)) ('p', 'Chemical', 'MESH:D010758', (88, 89)) ('c', 'Chemical', 'MESH:D002244', (43, 44)) ('p', 'Chemical', 'MESH:D010758', (26, 27)) 64894 33114456 Most of the tumour samples with no changes or deletion of EPAS1 DNA copy number exhibited similar results in mRNA expressions. ('deletion', 'Var', (46, 54)) ('c', 'Chemical', 'MESH:D002244', (68, 69)) ('tumour', 'Disease', (12, 18)) ('c', 'Chemical', 'MESH:D002244', (35, 36)) ('p', 'Chemical', 'MESH:D010758', (70, 71)) ('EPAS1', 'Gene', (58, 63)) ('p', 'Chemical', 'MESH:D010758', (22, 23)) ('mRNA expressions', 'MPA', (109, 125)) ('tumour', 'Phenotype', 'HP:0002664', (12, 18)) ('p', 'Chemical', 'MESH:D010758', (116, 117)) ('tumour', 'Disease', 'MESH:D009369', (12, 18)) 64895 33114456 On the other hand, most of the tumour samples with EPAS1 copy number amplifications had increased mRNA and protein expression. ('p', 'Chemical', 'MESH:D010758', (59, 60)) ('p', 'Chemical', 'MESH:D010758', (107, 108)) ('p', 'Chemical', 'MESH:D010758', (41, 42)) ('p', 'Chemical', 'MESH:D010758', (117, 118)) ('tumour', 'Phenotype', 'HP:0002664', (31, 37)) ('copy number amplifications', 'Var', (57, 83)) ('increased', 'PosReg', (88, 97)) ('c', 'Chemical', 'MESH:D002244', (76, 77)) ('c', 'Chemical', 'MESH:D002244', (90, 91)) ('p', 'Chemical', 'MESH:D010758', (71, 72)) ('tumour', 'Disease', 'MESH:D009369', (31, 37)) ('c', 'Chemical', 'MESH:D002244', (57, 58)) ('EPAS1', 'Gene', (51, 56)) ('tumour', 'Disease', (31, 37)) 64898 33114456 In addition, the majority (5/8) of tumours with EPAS1 mutations showed higher expression of protein when compared with non-neoplastic adrenal gland or mutation-negative tissues (Figure 4). ('higher', 'PosReg', (71, 77)) ('tumours', 'Disease', (35, 42)) ('p', 'Chemical', 'MESH:D010758', (126, 127)) ('mutations', 'Var', (54, 63)) ('c', 'Chemical', 'MESH:D002244', (105, 106)) ('tumour', 'Phenotype', 'HP:0002664', (35, 41)) ('EPAS1', 'Gene', (48, 53)) ('p', 'Chemical', 'MESH:D010758', (108, 109)) ('p', 'Chemical', 'MESH:D010758', (80, 81)) ('tumours', 'Phenotype', 'HP:0002664', (35, 42)) ('neoplastic adrenal gland', 'Phenotype', 'HP:0100631', (123, 147)) ('c', 'Chemical', 'MESH:D002244', (132, 133)) ('tumours', 'Disease', 'MESH:D009369', (35, 42)) ('p', 'Chemical', 'MESH:D010758', (92, 93)) ('protein', 'Protein', (92, 99)) ('neoplastic adrenal', 'Phenotype', 'HP:0100631', (123, 141)) ('expression of', 'MPA', (78, 91)) 64899 33114456 This study identified novel mutations and clinicopathological implications of EPAS1 dysregulation in the pathogenesis of phaeochromocytoma/paraganglioma. ('dysregulation', 'Var', (84, 97)) ('EPAS1', 'Gene', (78, 83)) ('c', 'Chemical', 'MESH:D002244', (126, 127)) ('c', 'Chemical', 'MESH:D002244', (58, 59)) ('paraganglioma', 'Phenotype', 'HP:0002668', (139, 152)) ('p', 'Chemical', 'MESH:D010758', (121, 122)) ('c', 'Chemical', 'MESH:D002244', (42, 43)) ('phaeochromocytoma/paraganglioma', 'Disease', 'MESH:D010235', (121, 152)) ('phaeochromocytoma/paraganglioma', 'Disease', (121, 152)) ('p', 'Chemical', 'MESH:D010758', (49, 50)) ('p', 'Chemical', 'MESH:D010758', (139, 140)) ('c', 'Chemical', 'MESH:D002244', (67, 68)) ('c', 'Chemical', 'MESH:D002244', (132, 133)) ('c', 'Chemical', 'MESH:D002244', (47, 48)) ('p', 'Chemical', 'MESH:D010758', (105, 106)) ('p', 'Chemical', 'MESH:D010758', (64, 65)) 64900 33114456 The mutation analysis of EPAS1 in 71 phaeochromocytomas and paragangliomas resulted in the identification of two heterozygous somatic mutations, which have not been previously reported in phaeochromocytomas and paragangliomas. ('p', 'Chemical', 'MESH:D010758', (165, 166)) ('c', 'Chemical', 'MESH:D002244', (199, 200)) ('c', 'Chemical', 'MESH:D002244', (48, 49)) ('mutation analysis', 'Var', (4, 21)) ('p', 'Chemical', 'MESH:D010758', (37, 38)) ('p', 'Chemical', 'MESH:D010758', (188, 189)) ('paraganglioma', 'Phenotype', 'HP:0002668', (211, 224)) ('p', 'Chemical', 'MESH:D010758', (211, 212)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (188, 225)) ('paraganglioma', 'Phenotype', 'HP:0002668', (60, 73)) ('p', 'Chemical', 'MESH:D010758', (60, 61)) ('p', 'Chemical', 'MESH:D010758', (178, 179)) ('c', 'Chemical', 'MESH:D002244', (148, 149)) ('EPAS1', 'Gene', (25, 30)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (37, 74)) ('c', 'Chemical', 'MESH:D002244', (132, 133)) ('paragangliomas', 'Phenotype', 'HP:0002668', (211, 225)) ('c', 'Chemical', 'MESH:D002244', (99, 100)) ('paragangliomas', 'Phenotype', 'HP:0002668', (60, 74)) ('c', 'Chemical', 'MESH:D002244', (42, 43)) ('c', 'Chemical', 'MESH:D002244', (193, 194)) 64901 33114456 The detected mutation p.Lys364Met in exon 9 was predicted to be pathogenic to the functionality of EPAS1 protein in computational analysis. ('p.Lys364Met', 'SUBSTITUTION', 'None', (22, 33)) ('c', 'Chemical', 'MESH:D002244', (116, 117)) ('p', 'Chemical', 'MESH:D010758', (119, 120)) ('p', 'Chemical', 'MESH:D010758', (48, 49)) ('EPAS1 protein', 'Protein', (99, 112)) ('p.Lys364Met', 'Var', (22, 33)) ('c', 'Chemical', 'MESH:D002244', (8, 9)) ('c', 'Chemical', 'MESH:D002244', (73, 74)) ('p', 'Chemical', 'MESH:D010758', (22, 23)) ('c', 'Chemical', 'MESH:D002244', (53, 54)) ('p', 'Chemical', 'MESH:D010758', (105, 106)) ('c', 'Chemical', 'MESH:D002244', (85, 86)) ('p', 'Chemical', 'MESH:D010758', (64, 65)) 64903 33114456 Moreover, in the present study, we have noted that the patients with phaeochromocytoma/paraganglioma having EPAS1 mutations had no mutations in phaeochromocytoma/paraganglioma-susceptible gene panels except NF1 in two patients with Neurofibromatosis 1. ('NF1', 'Gene', (207, 210)) ('mutations', 'Var', (114, 123)) ('paraganglioma', 'Phenotype', 'HP:0002668', (87, 100)) ('p', 'Chemical', 'MESH:D010758', (55, 56)) ('c', 'Chemical', 'MESH:D002244', (80, 81)) ('p', 'Chemical', 'MESH:D010758', (204, 205)) ('Neurofibromatosis 1', 'Gene', (232, 251)) ('EPAS1', 'Gene', (108, 113)) ('phaeochromocytoma/paraganglioma', 'Disease', (144, 175)) ('phaeochromocytoma/paraganglioma', 'Disease', 'MESH:D010235', (144, 175)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (232, 249)) ('p', 'Chemical', 'MESH:D010758', (69, 70)) ('p', 'Chemical', 'MESH:D010758', (162, 163)) ('c', 'Chemical', 'MESH:D002244', (149, 150)) ('p', 'Chemical', 'MESH:D010758', (218, 219)) ('Neurofibromatosis 1', 'Gene', '4763', (232, 251)) ('c', 'Chemical', 'MESH:D002244', (179, 180)) ('patients', 'Species', '9606', (218, 226)) ('c', 'Chemical', 'MESH:D002244', (155, 156)) ('paraganglioma', 'Phenotype', 'HP:0002668', (162, 175)) ('p', 'Chemical', 'MESH:D010758', (193, 194)) ('c', 'Chemical', 'MESH:D002244', (74, 75)) ('p', 'Chemical', 'MESH:D010758', (144, 145)) ('p', 'Chemical', 'MESH:D010758', (17, 18)) ('p', 'Chemical', 'MESH:D010758', (87, 88)) ('NF1', 'Gene', '4763', (207, 210)) ('c', 'Chemical', 'MESH:D002244', (202, 203)) ('phaeochromocytoma/paraganglioma', 'Disease', (69, 100)) ('phaeochromocytoma/paraganglioma', 'Disease', 'MESH:D010235', (69, 100)) ('patients', 'Species', '9606', (55, 63)) ('p', 'Chemical', 'MESH:D010758', (181, 182)) 64906 33114456 Furthermore, gain-of-function mutations (p.Phe374Tyr and p.Met368Ile) in exon 9 EPAS1 in phaeochromocytomas/paragangliomas associated with the increased stability of HIF2alpha. ('increased', 'PosReg', (143, 152)) ('c', 'Chemical', 'MESH:D002244', (24, 25)) ('stability', 'CPA', (153, 162)) ('gain-of-function', 'PosReg', (13, 29)) ('HIF2alpha', 'Gene', '2034', (166, 175)) ('c', 'Chemical', 'MESH:D002244', (127, 128)) ('p.Phe374Tyr', 'Var', (41, 52)) ('p.Met368Ile', 'SUBSTITUTION', 'None', (57, 68)) ('c', 'Chemical', 'MESH:D002244', (94, 95)) ('phaeochromocytomas/paragangliomas', 'Disease', 'MESH:D010235', (89, 122)) ('p.Met368Ile', 'Var', (57, 68)) ('c', 'Chemical', 'MESH:D002244', (100, 101)) ('p.Phe374Tyr', 'SUBSTITUTION', 'None', (41, 52)) ('paragangliomas', 'Phenotype', 'HP:0002668', (108, 122)) ('paraganglioma', 'Phenotype', 'HP:0002668', (108, 121)) ('EPAS1', 'Gene', (80, 85)) ('HIF2alpha', 'Gene', (166, 175)) ('c', 'Chemical', 'MESH:D002244', (145, 146)) ('phaeochromocytomas/paragangliomas', 'Disease', (89, 122)) 64907 33114456 Higher EPAS1 protein expression in mutated samples implied that the results of the current study are consistent with the previous findings. ('EPAS1 protein', 'Protein', (7, 20)) ('mutated', 'Var', (35, 42)) ('p', 'Chemical', 'MESH:D010758', (13, 14)) ('c', 'Chemical', 'MESH:D002244', (83, 84)) ('p', 'Chemical', 'MESH:D010758', (121, 122)) ('expression', 'MPA', (21, 31)) ('c', 'Chemical', 'MESH:D002244', (101, 102)) ('Higher', 'PosReg', (0, 6)) ('p', 'Chemical', 'MESH:D010758', (23, 24)) ('p', 'Chemical', 'MESH:D010758', (46, 47)) ('p', 'Chemical', 'MESH:D010758', (53, 54)) ('protein', 'Protein', (13, 20)) 64909 33114456 EPAS1 mutations have been identified in several pathological conditions in humans, including congenital heart disease, erythrocytosis, Lynch syndrome, polycythaemia and in various tumours, e.g., in paraganglioma, phaeochromocytoma, pancreatic adenocarcinoma. ('p', 'Chemical', 'MESH:D010758', (213, 214)) ('congenital heart disease', 'Disease', (93, 117)) ('tumours', 'Disease', 'MESH:D009369', (180, 187)) ('p', 'Chemical', 'MESH:D010758', (151, 152)) ('c', 'Chemical', 'MESH:D002244', (224, 225)) ('congenital heart disease', 'Phenotype', 'HP:0001627', (93, 117)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (135, 149)) ('paraganglioma', 'Phenotype', 'HP:0002668', (198, 211)) ('identified', 'Reg', (26, 36)) ('pancreatic adenocarcinoma', 'Disease', (232, 257)) ('polycythaemia', 'Disease', (151, 164)) ('c', 'Chemical', 'MESH:D002244', (126, 127)) ('c', 'Chemical', 'MESH:D002244', (93, 94)) ('c', 'Chemical', 'MESH:D002244', (61, 62)) ('mutations', 'Var', (6, 15)) ('c', 'Chemical', 'MESH:D002244', (85, 86)) ('erythrocytosis', 'Disease', 'MESH:D011086', (119, 133)) ('c', 'Chemical', 'MESH:D002244', (251, 252)) ('EPAS1', 'Gene', (0, 5)) ('c', 'Chemical', 'MESH:D002244', (138, 139)) ('humans', 'Species', '9606', (75, 81)) ('congenital heart disease', 'Disease', 'MESH:D006331', (93, 117)) ('c', 'Chemical', 'MESH:D002244', (155, 156)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (119, 133)) ('c', 'Chemical', 'MESH:D002244', (218, 219)) ('erythrocytosis', 'Disease', (119, 133)) ('p', 'Chemical', 'MESH:D010758', (232, 233)) ('c', 'Chemical', 'MESH:D002244', (235, 236)) ('pancreatic adenocarcinoma', 'Disease', 'MESH:D000230', (232, 257)) ('paraganglioma, phaeochromocytoma', 'Disease', 'MESH:D010235', (198, 230)) ('tumours', 'Disease', (180, 187)) ('p', 'Chemical', 'MESH:D010758', (48, 49)) ('c', 'Chemical', 'MESH:D002244', (248, 249)) ('pancreatic adenocarcinoma', 'Phenotype', 'HP:0006725', (232, 257)) ('Lynch syndrome', 'Disease', (135, 149)) ('c', 'Chemical', 'MESH:D002244', (241, 242)) ('tumour', 'Phenotype', 'HP:0002664', (180, 186)) ('p', 'Chemical', 'MESH:D010758', (198, 199)) ('polycythaemia', 'Disease', 'MESH:C548016', (151, 164)) ('c', 'Chemical', 'MESH:D002244', (57, 58)) ('tumours', 'Phenotype', 'HP:0002664', (180, 187)) ('carcinoma', 'Phenotype', 'HP:0030731', (248, 257)) 64910 33114456 Somatic EPAS1 mutations in different cancers indicate that these mutations may occur in a cell during embryogenesis or later, which in turn predispose the affected tissues or organ to form tumours. ('c', 'Chemical', 'MESH:D002244', (129, 130)) ('tumour', 'Phenotype', 'HP:0002664', (189, 195)) ('c', 'Chemical', 'MESH:D002244', (49, 50)) ('c', 'Chemical', 'MESH:D002244', (159, 160)) ('c', 'Chemical', 'MESH:D002244', (80, 81)) ('c', 'Chemical', 'MESH:D002244', (40, 41)) ('p', 'Chemical', 'MESH:D010758', (140, 141)) ('c', 'Chemical', 'MESH:D002244', (6, 7)) ('p', 'Chemical', 'MESH:D010758', (146, 147)) ('cancers', 'Disease', 'MESH:D009369', (37, 44)) ('c', 'Chemical', 'MESH:D002244', (37, 38)) ('mutations', 'Var', (14, 23)) ('cancer', 'Phenotype', 'HP:0002664', (37, 43)) ('tumours', 'Disease', (189, 196)) ('EPAS1', 'Gene', (8, 13)) ('predispose', 'Reg', (140, 150)) ('cancers', 'Phenotype', 'HP:0002664', (37, 44)) ('cancers', 'Disease', (37, 44)) ('c', 'Chemical', 'MESH:D002244', (90, 91)) ('tumours', 'Phenotype', 'HP:0002664', (189, 196)) ('tumours', 'Disease', 'MESH:D009369', (189, 196)) ('c', 'Chemical', 'MESH:D002244', (81, 82)) ('mutations', 'Var', (65, 74)) 64913 33114456 The current study reports EPAS1 mutations in patients with phaeochromocytomas and paragangliomas and their correlation with various clinicopathological factors. ('paragangliomas', 'Phenotype', 'HP:0002668', (82, 96)) ('c', 'Chemical', 'MESH:D002244', (137, 138)) ('patients', 'Species', '9606', (45, 53)) ('p', 'Chemical', 'MESH:D010758', (20, 21)) ('c', 'Chemical', 'MESH:D002244', (64, 65)) ('p', 'Chemical', 'MESH:D010758', (59, 60)) ('p', 'Chemical', 'MESH:D010758', (45, 46)) ('c', 'Chemical', 'MESH:D002244', (70, 71)) ('mutations', 'Var', (32, 41)) ('p', 'Chemical', 'MESH:D010758', (139, 140)) ('p', 'Chemical', 'MESH:D010758', (82, 83)) ('c', 'Chemical', 'MESH:D002244', (4, 5)) ('EPAS1', 'Gene', (26, 31)) ('c', 'Chemical', 'MESH:D002244', (107, 108)) ('c', 'Chemical', 'MESH:D002244', (148, 149)) ('c', 'Chemical', 'MESH:D002244', (132, 133)) ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (59, 96)) ('c', 'Chemical', 'MESH:D002244', (154, 155)) 64914 33114456 The association of EPAS1 mutations with high tumour weight (p = 0.001) and larger tumour size (p = 0.044) implied that mutations of EPAS1 may contribute to the progression of this group of tumours. ('high tumour weight', 'Disease', 'MESH:D009369', (40, 58)) ('c', 'Chemical', 'MESH:D002244', (142, 143)) ('high tumour weight', 'Disease', (40, 58)) ('tumour', 'Phenotype', 'HP:0002664', (189, 195)) ('tumour', 'Phenotype', 'HP:0002664', (45, 51)) ('tumour', 'Disease', 'MESH:D009369', (45, 51)) ('c', 'Chemical', 'MESH:D002244', (8, 9)) ('tumour', 'Disease', 'MESH:D009369', (189, 195)) ('tumour', 'Disease', (189, 195)) ('tumour', 'Disease', (45, 51)) ('EPAS1', 'Gene', (132, 137)) ('mutations', 'Var', (25, 34)) ('EPAS1', 'Gene', (19, 24)) ('p', 'Chemical', 'MESH:D010758', (108, 109)) ('mutations', 'Var', (119, 128)) ('p', 'Chemical', 'MESH:D010758', (60, 61)) ('tumour', 'Phenotype', 'HP:0002664', (82, 88)) ('association', 'Interaction', (4, 15)) ('tumour', 'Disease', 'MESH:D009369', (82, 88)) ('tumour', 'Disease', (82, 88)) ('p', 'Chemical', 'MESH:D010758', (184, 185)) ('tumours', 'Disease', (189, 196)) ('tumours', 'Disease', 'MESH:D009369', (189, 196)) ('tumours', 'Phenotype', 'HP:0002664', (189, 196)) ('p', 'Chemical', 'MESH:D010758', (95, 96)) ('p', 'Chemical', 'MESH:D010758', (160, 161)) ('contribute', 'Reg', (142, 152)) 64916 33114456 Thus, the gain-of-function mutations of EPAS1 can lead to increased expression of VEGF and Flt1 in endothelial cells, which in turn promotes angiogenesis, thereby promoting tumour growth and progression. ('mutations', 'Var', (27, 36)) ('tumour growth', 'Disease', 'MESH:D006130', (173, 186)) ('expression', 'MPA', (68, 78)) ('Flt1', 'Gene', '2321', (91, 95)) ('p', 'Chemical', 'MESH:D010758', (70, 71)) ('c', 'Chemical', 'MESH:D002244', (111, 112)) ('promotes', 'PosReg', (132, 140)) ('progression', 'CPA', (191, 202)) ('VEGF', 'Gene', '7422', (82, 86)) ('promoting', 'PosReg', (163, 172)) ('p', 'Chemical', 'MESH:D010758', (163, 164)) ('VEGF', 'Gene', (82, 86)) ('tumour growth', 'Disease', (173, 186)) ('p', 'Chemical', 'MESH:D010758', (132, 133)) ('c', 'Chemical', 'MESH:D002244', (46, 47)) ('increased', 'PosReg', (58, 67)) ('c', 'Chemical', 'MESH:D002244', (21, 22)) ('gain-of-function', 'PosReg', (10, 26)) ('Flt1', 'Gene', (91, 95)) ('c', 'Chemical', 'MESH:D002244', (60, 61)) ('angiogenesis', 'CPA', (141, 153)) ('EPAS1', 'Gene', (40, 45)) ('c', 'Chemical', 'MESH:D002244', (121, 122)) ('tumour', 'Phenotype', 'HP:0002664', (173, 179)) ('p', 'Chemical', 'MESH:D010758', (191, 192)) 64918 33114456 In addition, mutations in EPAS1 increased the stability of HIF2alpha leading to pseudo-hypoxic response, thus allowing for the activation of target genes and hence contributing to chromaffin cells tumorigenesis. ('HIF2alpha', 'Gene', (59, 68)) ('c', 'Chemical', 'MESH:D002244', (128, 129)) ('pseudo-hypoxic response', 'MPA', (80, 103)) ('c', 'Chemical', 'MESH:D002244', (191, 192)) ('chromaffin cells', 'Disease', (180, 196)) ('c', 'Chemical', 'MESH:D002244', (93, 94)) ('c', 'Chemical', 'MESH:D002244', (180, 181)) ('p', 'Chemical', 'MESH:D010758', (98, 99)) ('EPAS1', 'Gene', (26, 31)) ('c', 'Chemical', 'MESH:D002244', (164, 165)) ('HIF2alpha', 'Gene', '2034', (59, 68)) ('contributing to', 'Reg', (164, 179)) ('stability', 'MPA', (46, 55)) ('activation', 'PosReg', (127, 137)) ('mutations', 'Var', (13, 22)) ('leading to', 'Reg', (69, 79)) ('c', 'Chemical', 'MESH:D002244', (161, 162)) ('p', 'Chemical', 'MESH:D010758', (89, 90)) ('c', 'Chemical', 'MESH:D002244', (34, 35)) ('chromaffin', 'Chemical', '-', (180, 190)) ('p', 'Chemical', 'MESH:D010758', (65, 66)) ('p', 'Chemical', 'MESH:D010758', (80, 81)) ('increased', 'PosReg', (32, 41)) 64919 33114456 Therefore, mutations of EPAS1 may reduce HIF2alpha breakdown, which in turn could promote carcinogenesis by inducing pseudo-hypoxic conditions and promoting angiogenesis. ('p', 'Chemical', 'MESH:D010758', (126, 127)) ('mutations', 'Var', (11, 20)) ('promote', 'PosReg', (82, 89)) ('p', 'Chemical', 'MESH:D010758', (117, 118)) ('c', 'Chemical', 'MESH:D002244', (65, 66)) ('HIF2alpha', 'Gene', '2034', (41, 50)) ('c', 'Chemical', 'MESH:D002244', (38, 39)) ('c', 'Chemical', 'MESH:D002244', (93, 94)) ('p', 'Chemical', 'MESH:D010758', (82, 83)) ('carcinogenesis', 'Disease', (90, 104)) ('promoting', 'PosReg', (147, 156)) ('p', 'Chemical', 'MESH:D010758', (147, 148)) ('EPAS1', 'Gene', (24, 29)) ('reduce', 'NegReg', (34, 40)) ('inducing', 'Reg', (108, 116)) ('c', 'Chemical', 'MESH:D002244', (76, 77)) ('angiogenesis', 'CPA', (157, 169)) ('carcinogenesis', 'Disease', 'MESH:D063646', (90, 104)) ('c', 'Chemical', 'MESH:D002244', (132, 133)) ('c', 'Chemical', 'MESH:D002244', (130, 131)) ('HIF2alpha', 'Gene', (41, 50)) ('pseudo-hypoxic conditions', 'MPA', (117, 142)) ('c', 'Chemical', 'MESH:D002244', (90, 91)) ('c', 'Chemical', 'MESH:D002244', (112, 113)) ('p', 'Chemical', 'MESH:D010758', (47, 48)) 64920 33114456 DNA copy number aberrations, dysregulated mRNA and protein level expressions in genes are commonly acquired changes in the cancer cells, thus playing a key role in the initiation and progression of cancers. ('p', 'Chemical', 'MESH:D010758', (6, 7)) ('copy number aberrations', 'Var', (4, 27)) ('cancer', 'Phenotype', 'HP:0002664', (123, 129)) ('cancers', 'Disease', 'MESH:D009369', (198, 205)) ('dysregulated', 'Var', (29, 41)) ('c', 'Chemical', 'MESH:D002244', (198, 199)) ('c', 'Chemical', 'MESH:D002244', (126, 127)) ('cancer', 'Disease', (198, 204)) ('cancer', 'Disease', 'MESH:D009369', (123, 129)) ('cancer', 'Phenotype', 'HP:0002664', (198, 204)) ('p', 'Chemical', 'MESH:D010758', (67, 68)) ('c', 'Chemical', 'MESH:D002244', (4, 5)) ('cancers', 'Phenotype', 'HP:0002664', (198, 205)) ('cancers', 'Disease', (198, 205)) ('p', 'Chemical', 'MESH:D010758', (51, 52)) ('c', 'Chemical', 'MESH:D002244', (100, 101)) ('c', 'Chemical', 'MESH:D002244', (108, 109)) ('c', 'Chemical', 'MESH:D002244', (130, 131)) ('cancer', 'Disease', 'MESH:D009369', (198, 204)) ('c', 'Chemical', 'MESH:D002244', (123, 124)) ('p', 'Chemical', 'MESH:D010758', (142, 143)) ('c', 'Chemical', 'MESH:D002244', (90, 91)) ('p', 'Chemical', 'MESH:D010758', (183, 184)) ('cancer', 'Disease', (123, 129)) ('c', 'Chemical', 'MESH:D002244', (201, 202)) 64921 33114456 In the current study, the aberrant EPAS1 DNA number in patients with phaeochromocytomas/paragangliomas implied its potential roles in carcinogenesis. ('carcinogenesis', 'Disease', 'MESH:D063646', (134, 148)) ('c', 'Chemical', 'MESH:D002244', (137, 138)) ('p', 'Chemical', 'MESH:D010758', (55, 56)) ('c', 'Chemical', 'MESH:D002244', (80, 81)) ('c', 'Chemical', 'MESH:D002244', (134, 135)) ('aberrant', 'Var', (26, 34)) ('EPAS1', 'Protein', (35, 40)) ('phaeochromocytomas/paragangliomas', 'Disease', (69, 102)) ('p', 'Chemical', 'MESH:D010758', (69, 70)) ('c', 'Chemical', 'MESH:D002244', (7, 8)) ('p', 'Chemical', 'MESH:D010758', (115, 116)) ('p', 'Chemical', 'MESH:D010758', (88, 89)) ('c', 'Chemical', 'MESH:D002244', (74, 75)) ('roles', 'Reg', (125, 130)) ('p', 'Chemical', 'MESH:D010758', (105, 106)) ('phaeochromocytomas/paragangliomas', 'Disease', 'MESH:D010235', (69, 102)) ('carcinogenesis', 'Disease', (134, 148)) ('patients', 'Species', '9606', (55, 63)) ('paraganglioma', 'Phenotype', 'HP:0002668', (88, 101)) ('paragangliomas', 'Phenotype', 'HP:0002668', (88, 102)) 64922 33114456 Similarly, the dysregulated expression of EPAS1 mRNA in tumour samples indicated the tumour-associated functionality of EPAS1 in phaeochromocytomas and paragangliomas. ('tumour', 'Disease', 'MESH:D009369', (85, 91)) ('c', 'Chemical', 'MESH:D002244', (96, 97)) ('tumour', 'Disease', (85, 91)) ('paragangliomas', 'Phenotype', 'HP:0002668', (152, 166)) ('p', 'Chemical', 'MESH:D010758', (30, 31)) ('c', 'Chemical', 'MESH:D002244', (134, 135)) ('EPAS1', 'Gene', (42, 47)) ('c', 'Chemical', 'MESH:D002244', (140, 141)) ('EPAS1', 'Gene', (120, 125)) ('p', 'Chemical', 'MESH:D010758', (66, 67)) ('tumour', 'Phenotype', 'HP:0002664', (56, 62)) ('tumour', 'Disease', 'MESH:D009369', (56, 62)) ('c', 'Chemical', 'MESH:D002244', (75, 76)) ('tumour', 'Disease', (56, 62)) ('p', 'Chemical', 'MESH:D010758', (129, 130)) ('c', 'Chemical', 'MESH:D002244', (106, 107)) ('expression', 'MPA', (28, 38)) ('dysregulated', 'Var', (15, 27)) ('p', 'Chemical', 'MESH:D010758', (152, 153)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (129, 166)) ('paraganglioma', 'Phenotype', 'HP:0002668', (152, 165)) ('tumour', 'Phenotype', 'HP:0002664', (85, 91)) 64924 33114456 The differential EPAS1 DNA number and mRNA expression in phaeochromocytomas and paragangliomas implied that the aberration of EPAS1 could affect these tumours in a different manner. ('c', 'Chemical', 'MESH:D002244', (142, 143)) ('paraganglioma', 'Phenotype', 'HP:0002668', (80, 93)) ('paragangliomas', 'Phenotype', 'HP:0002668', (80, 94)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (57, 94)) ('c', 'Chemical', 'MESH:D002244', (62, 63)) ('p', 'Chemical', 'MESH:D010758', (45, 46)) ('tumours', 'Disease', (151, 158)) ('affect', 'Reg', (138, 144)) ('p', 'Chemical', 'MESH:D010758', (97, 98)) ('mRNA expression', 'MPA', (38, 53)) ('EPAS1', 'Gene', (17, 22)) ('tumours', 'Phenotype', 'HP:0002664', (151, 158)) ('p', 'Chemical', 'MESH:D010758', (57, 58)) ('tumours', 'Disease', 'MESH:D009369', (151, 158)) ('c', 'Chemical', 'MESH:D002244', (132, 133)) ('c', 'Chemical', 'MESH:D002244', (68, 69)) ('tumour', 'Phenotype', 'HP:0002664', (151, 157)) ('EPAS1', 'Gene', (126, 131)) ('p', 'Chemical', 'MESH:D010758', (80, 81)) ('aberration', 'Var', (112, 122)) 64929 33114456 Moreover, the DNA amplification and mRNA overexpression in patients with phaeochromocytomas/paragangliomas bearing EPAS1 mutations is indicative of the concerted aberration of EPAS1 in the pathogenesis for this group of tumours. ('mutations', 'Var', (121, 130)) ('p', 'Chemical', 'MESH:D010758', (189, 190)) ('c', 'Chemical', 'MESH:D002244', (25, 26)) ('DNA amplification', 'MPA', (14, 31)) ('tumour', 'Phenotype', 'HP:0002664', (220, 226)) ('tumours', 'Disease', 'MESH:D009369', (220, 227)) ('EPAS1', 'Gene', (115, 120)) ('p', 'Chemical', 'MESH:D010758', (92, 93)) ('c', 'Chemical', 'MESH:D002244', (152, 153)) ('c', 'Chemical', 'MESH:D002244', (78, 79)) ('p', 'Chemical', 'MESH:D010758', (20, 21)) ('phaeochromocytomas/paragangliomas', 'Disease', 'MESH:D010235', (73, 106)) ('p', 'Chemical', 'MESH:D010758', (59, 60)) ('patients', 'Species', '9606', (59, 67)) ('c', 'Chemical', 'MESH:D002244', (84, 85)) ('paraganglioma', 'Phenotype', 'HP:0002668', (92, 105)) ('paragangliomas', 'Phenotype', 'HP:0002668', (92, 106)) ('c', 'Chemical', 'MESH:D002244', (138, 139)) ('c', 'Chemical', 'MESH:D002244', (155, 156)) ('overexpression', 'PosReg', (41, 55)) ('tumours', 'Disease', (220, 227)) ('mRNA', 'MPA', (36, 40)) ('phaeochromocytomas/paragangliomas', 'Disease', (73, 106)) ('tumours', 'Phenotype', 'HP:0002664', (220, 227)) ('p', 'Chemical', 'MESH:D010758', (73, 74)) ('p', 'Chemical', 'MESH:D010758', (215, 216)) ('p', 'Chemical', 'MESH:D010758', (47, 48)) 64931 33114456 Previous studies reported that dysregulation and gain-of-function mutation of EPAS1 associated with neuroendocrine tumours such as paraganglioma and phaeochromocytomas by inducing pseudo-hypoxic tumour microenvironment. ('c', 'Chemical', 'MESH:D002244', (175, 176)) ('p', 'Chemical', 'MESH:D010758', (189, 190)) ('tumour', 'Phenotype', 'HP:0002664', (115, 121)) ('p', 'Chemical', 'MESH:D010758', (149, 150)) ('p', 'Chemical', 'MESH:D010758', (180, 181)) ('paraganglioma and phaeochromocytomas', 'Disease', 'MESH:D010235', (131, 167)) ('tumours', 'Phenotype', 'HP:0002664', (115, 122)) ('c', 'Chemical', 'MESH:D002244', (160, 161)) ('p', 'Chemical', 'MESH:D010758', (131, 132)) ('c', 'Chemical', 'MESH:D002244', (125, 126)) ('hypoxic tumour', 'Disease', 'MESH:D009369', (187, 201)) ('mutation', 'Var', (66, 74)) ('c', 'Chemical', 'MESH:D002244', (204, 205)) ('p', 'Chemical', 'MESH:D010758', (19, 20)) ('c', 'Chemical', 'MESH:D002244', (109, 110)) ('men', 'Species', '9606', (214, 217)) ('gain-of-function', 'PosReg', (49, 65)) ('paraganglioma', 'Phenotype', 'HP:0002668', (131, 144)) ('c', 'Chemical', 'MESH:D002244', (60, 61)) ('dysregulation', 'MPA', (31, 44)) ('EPAS1', 'Gene', (78, 83)) ('neuroendocrine tumours', 'Disease', (100, 122)) ('c', 'Chemical', 'MESH:D002244', (154, 155)) ('neuroendocrine tumours', 'Disease', 'MESH:D018358', (100, 122)) ('hypoxic tumour', 'Disease', (187, 201)) ('c', 'Chemical', 'MESH:D002244', (193, 194)) ('c', 'Chemical', 'MESH:D002244', (88, 89)) ('inducing', 'PosReg', (171, 179)) ('tumour', 'Phenotype', 'HP:0002664', (195, 201)) 64933 33114456 This study has reported multiple novel EPAS1 mutations in patients with phaeochromocytomas/paragangliomas. ('paraganglioma', 'Phenotype', 'HP:0002668', (91, 104)) ('EPAS1', 'Gene', (39, 44)) ('p', 'Chemical', 'MESH:D010758', (58, 59)) ('mutations', 'Var', (45, 54)) ('phaeochromocytomas/paragangliomas', 'Disease', 'MESH:D010235', (72, 105)) ('p', 'Chemical', 'MESH:D010758', (17, 18)) ('phaeochromocytomas/paragangliomas', 'Disease', (72, 105)) ('p', 'Chemical', 'MESH:D010758', (72, 73)) ('p', 'Chemical', 'MESH:D010758', (29, 30)) ('patients', 'Species', '9606', (58, 66)) ('paragangliomas', 'Phenotype', 'HP:0002668', (91, 105)) ('p', 'Chemical', 'MESH:D010758', (91, 92)) 64934 33114456 These mutations were noted to be related with altered expression and/or structural and functional changes in EPAS1, which in turn could play an important role in the pathogenesis of phaeochromocytomas and paragangliomas. ('p', 'Chemical', 'MESH:D010758', (182, 183)) ('EPAS1', 'Gene', (109, 114)) ('play', 'Reg', (136, 140)) ('paraganglioma', 'Phenotype', 'HP:0002668', (205, 218)) ('p', 'Chemical', 'MESH:D010758', (205, 206)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (182, 219)) ('c', 'Chemical', 'MESH:D002244', (119, 120)) ('p', 'Chemical', 'MESH:D010758', (146, 147)) ('altered', 'Reg', (46, 53)) ('paragangliomas', 'Phenotype', 'HP:0002668', (205, 219)) ('mutations', 'Var', (6, 15)) ('structural', 'MPA', (72, 82)) ('c', 'Chemical', 'MESH:D002244', (76, 77)) ('functional', 'MPA', (87, 97)) ('c', 'Chemical', 'MESH:D002244', (187, 188)) ('c', 'Chemical', 'MESH:D002244', (130, 131)) ('role', 'Reg', (154, 158)) ('c', 'Chemical', 'MESH:D002244', (98, 99)) ('p', 'Chemical', 'MESH:D010758', (136, 137)) ('expression', 'MPA', (54, 64)) ('p', 'Chemical', 'MESH:D010758', (56, 57)) ('p', 'Chemical', 'MESH:D010758', (166, 167)) ('c', 'Chemical', 'MESH:D002244', (90, 91)) ('c', 'Chemical', 'MESH:D002244', (193, 194)) 64981 30483454 It has also been linked to mutations in the gene for succinate dehydrogenase (SDHD) subunits, rearranged during transfection (RET), and many other genes, which are autosomal dominant in nature. ('mutations', 'Var', (27, 36)) ('rearranged during transfection', 'Gene', (94, 124)) ('SDHD', 'Gene', (78, 82)) ('SDHD', 'Gene', '6392', (78, 82)) ('RET', 'Gene', '5979', (126, 129)) ('rearranged during transfection', 'Gene', '5979', (94, 124)) ('succinate dehydrogenase', 'Gene', '6392', (53, 76)) ('RET', 'Gene', (126, 129)) ('succinate dehydrogenase', 'Gene', (53, 76)) ('linked', 'Reg', (17, 23)) 65072 30345003 Establishment of the fact that mutations in multiple components of the PHD-VHL-HIF-2alpha pathway associate with pseudohypoxia-driven tumorigenesis allowed us not only to better understand the effect of this phenomenon but also to more deeply appreciate the value of functional abnormalities in the physiologic tissue oxygen-sensing mechanism. ('mutations', 'Var', (31, 40)) ('PHD-VHL-HIF-2alpha', 'Disease', (71, 89)) ('associate', 'Reg', (98, 107)) ('tumor', 'Disease', 'MESH:D009369', (134, 139)) ('pseudohypoxia', 'Disease', (113, 126)) ('PHD-VHL-HIF-2alpha', 'Disease', 'MESH:D006623', (71, 89)) ('functional abnormalities', 'Disease', (267, 291)) ('tumor', 'Phenotype', 'HP:0002664', (134, 139)) ('pseudohypoxia', 'Disease', 'None', (113, 126)) ('functional abnormalities', 'Disease', 'MESH:D000014', (267, 291)) ('oxygen', 'Chemical', 'MESH:D010100', (318, 324)) ('tumor', 'Disease', (134, 139)) 65073 30345003 Mutations in the tricarboxylic acid cycle-related genes opened an additional window into understanding the physiology of one of the basic cellular metabolic pathways and consequences of its disruption. ('Mutations', 'Var', (0, 9)) ('tricarboxylic acid cycle-related genes', 'Gene', (17, 55)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (17, 35)) 65074 30345003 New pathophysiologically distinct groups of mutations will widen and deepen our understanding of additional pathways in PPGL tumorigenesis and hopefully introduce additional diagnostic and therapeutic approaches. ('tumor', 'Disease', 'MESH:D009369', (125, 130)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('PPGL', 'Gene', (120, 124)) ('tumor', 'Disease', (125, 130)) ('mutations', 'Var', (44, 53)) 65087 30345003 We now know that PPGLs represent the highest hereditary-driven endocrine condition:up to 40% of cases are related to mutations in 15 well-established driver genes and a growing number of disease-modifying genes and these numbers are expected to grow - . ('mutations', 'Var', (117, 126)) ('endocrine condition', 'Phenotype', 'HP:0000818', (63, 82)) ('related', 'Reg', (106, 113)) ('PGLs', 'Phenotype', 'HP:0002668', (18, 22)) ('PPGLs', 'Gene', (17, 22)) ('PPGLs', 'Chemical', '-', (17, 22)) 65093 30345003 It represents 15 to 20% of PPGLs, which are hereditary in 25% of cases, and includes tumors associated with mutations in von Hippel-Lindau tumor suppressor gene ( VHL), Elegans homologs ( EGLN1-3), and endothelial PAS domain protein 1 ( EPAS1) gene. ('von Hippel-Lindau tumor', 'Disease', 'MESH:D006623', (121, 144)) ('PPGLs', 'Chemical', '-', (27, 32)) ('VHL', 'Gene', (163, 166)) ('endothelial PAS domain protein 1', 'Gene', (202, 234)) ('tumors', 'Phenotype', 'HP:0002664', (85, 91)) ('EPAS1', 'Gene', '2034', (237, 242)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('associated', 'Reg', (92, 102)) ('tumors', 'Disease', (85, 91)) ('VHL', 'Gene', '7428', (163, 166)) ('von Hippel-Lindau tumor', 'Disease', (121, 144)) ('tumor', 'Phenotype', 'HP:0002664', (139, 144)) ('PGLs', 'Phenotype', 'HP:0002668', (28, 32)) ('EGLN1', 'Gene', '54583', (188, 193)) ('tumors', 'Disease', 'MESH:D009369', (85, 91)) ('mutations', 'Var', (108, 117)) ('EGLN1', 'Gene', (188, 193)) ('EPAS1', 'Gene', (237, 242)) ('endothelial PAS domain protein 1', 'Gene', '2034', (202, 234)) 65094 30345003 VHL, expressing both germline and somatic mutation patterns, shows mutation in up to 100% of patients with VHL-related PPGL. ('VHL', 'Gene', '7428', (107, 110)) ('mutation', 'Var', (67, 75)) ('PPGL', 'Disease', (119, 123)) ('VHL', 'Gene', (0, 3)) ('VHL', 'Gene', '7428', (0, 3)) ('VHL', 'Gene', (107, 110)) ('patients', 'Species', '9606', (93, 101)) 65101 30345003 Whereas the first will be self-limited and seldom provide enough time for efficient tumorigenesis, pseudohypoxia can definitely extend to the significant length of time; in the case of VHL mutation, it will associate with a lack of recognition and degradation of the HIFalpha and beta heterodimer (in the case of PPGL, it is mostly HIF-2alpha), which will bind to the core DNA RCTCG sequence at the hypoxia-responsive elements (HREs) to activate transcription of multiple genes that could associate with tumor formation, including glucose transporter 1 (GLUT1), vascular endothelial growth factor (VEGF), and many others. ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('HIFalpha', 'Gene', (267, 275)) ('hypoxia', 'Disease', (105, 112)) ('vascular endothelial growth factor', 'Gene', '7422', (562, 596)) ('glucose transporter 1', 'Gene', '6513', (531, 552)) ('VEGF', 'Gene', '7422', (598, 602)) ('HIF-2alpha', 'Gene', (332, 342)) ('hypoxia', 'Disease', 'MESH:D000860', (399, 406)) ('tumor', 'Disease', (504, 509)) ('vascular endothelial growth factor', 'Gene', (562, 596)) ('glucose transporter 1', 'Gene', (531, 552)) ('hypoxia', 'Disease', 'MESH:D000860', (105, 112)) ('VEGF', 'Gene', (598, 602)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('tumor', 'Disease', 'MESH:D009369', (504, 509)) ('GLUT1', 'Gene', '6513', (554, 559)) ('pseudohypoxia', 'Disease', (99, 112)) ('VHL', 'Gene', (185, 188)) ('HIFalpha', 'Gene', '3091;2034', (267, 275)) ('activate', 'PosReg', (437, 445)) ('pseudohypoxia', 'Disease', 'None', (99, 112)) ('tumor', 'Phenotype', 'HP:0002664', (504, 509)) ('HIF-2alpha', 'Gene', '2034', (332, 342)) ('transcription', 'MPA', (446, 459)) ('tumor', 'Disease', (84, 89)) ('mutation', 'Var', (189, 197)) ('GLUT1', 'Gene', (554, 559)) ('VHL', 'Gene', '7428', (185, 188)) ('hypoxia', 'Disease', (399, 406)) 65102 30345003 The importance of the PHD-VHL-HIF-2alpha pathway in the pathogenesis of PPGL was also shown through the association of mutations in every component of this pathway (reviewed in ). ('association', 'Reg', (104, 115)) ('PPGL', 'Disease', (72, 76)) ('PHD-VHL-HIF-2alpha', 'Disease', (22, 40)) ('PHD-VHL-HIF-2alpha', 'Disease', 'MESH:D006623', (22, 40)) ('mutations', 'Var', (119, 128)) 65103 30345003 Mutations in EGLN 1 and 2, which encode PDH 2 and 1, respectively, were also shown to associate with the development of PPGLs. ('PPGLs', 'Chemical', '-', (120, 125)) ('EGLN 1 and 2', 'Gene', '54583;112398', (13, 25)) ('associate with', 'Reg', (86, 100)) ('Mutations', 'Var', (0, 9)) ('PGLs', 'Phenotype', 'HP:0002668', (121, 125)) ('PPGLs', 'Disease', (120, 125)) 65104 30345003 Germline, mosaic, or constitutional gain-of-function mutations in EPAS1 also associate with an increase in the transcriptional activity of HIF-2alpha target genes , , although the actual transcriptional signature seems to differ somewhat from the one associated with VHL and is associated with a distinct clinical constellation, including PPGL, polycythemia, and somatostatinomas, and is referred to as Zhuang-Pacak syndrome. ('gain-of-function', 'PosReg', (36, 52)) ('polycythemia', 'Phenotype', 'HP:0001901', (345, 357)) ('polycythemia', 'Disease', 'MESH:D011086', (345, 357)) ('Zhuang-Pacak syndrome', 'Disease', (403, 424)) ('HIF-2alpha', 'Gene', (139, 149)) ('increase', 'PosReg', (95, 103)) ('VHL', 'Gene', (267, 270)) ('PPGL', 'Disease', (339, 343)) ('EPAS1', 'Gene', '2034', (66, 71)) ('mutations', 'Var', (53, 62)) ('VHL', 'Gene', '7428', (267, 270)) ('somatostatinomas', 'Disease', 'MESH:D013005', (363, 379)) ('HIF-2alpha', 'Gene', '2034', (139, 149)) ('EPAS1', 'Gene', (66, 71)) ('transcriptional activity', 'MPA', (111, 135)) ('polycythemia', 'Disease', (345, 357)) ('somatostatinomas', 'Disease', (363, 379)) 65109 30345003 There are recently described constitutional mutations of the malate dehydrogenase ( MH2):the enzyme that converts malate to oxaloacetate further down the TCA:that associate with PGL in a single family . ('TCA', 'MPA', (154, 157)) ('TCA', 'Chemical', 'MESH:D014233', (154, 157)) ('malate dehydrogenase', 'Gene', (61, 81)) (' MH2):', 'Gene', (83, 89)) ('malate', 'Chemical', 'MESH:C030298', (61, 67)) ('malate dehydrogenase', 'Gene', '4199', (61, 81)) ('mutations', 'Var', (44, 53)) ('malate', 'Chemical', 'MESH:C030298', (114, 120)) ('oxaloacetate', 'Chemical', 'MESH:D062907', (124, 136)) 65115 30345003 These mutations are associated with the activation of kinase signaling pathways: RAS-RAF-MEK and PI3K-AKT-mTOR for RET, HRAS, NF1, and TMEM127 and MYC-MAX for MAX. ('MYC', 'Gene', (147, 150)) ('MAX', 'Gene', '4149', (151, 154)) ('NF1', 'Gene', '4763', (126, 129)) ('mTOR', 'Gene', (106, 110)) ('RET', 'Gene', (115, 118)) ('MAX', 'Gene', (159, 162)) ('TMEM127', 'Gene', (135, 142)) ('MYC', 'Gene', '4609', (147, 150)) ('NF1', 'Gene', (126, 129)) ('RAF', 'Gene', '22882', (85, 88)) ('mTOR', 'Gene', '2475', (106, 110)) ('mutations', 'Var', (6, 15)) ('MEK', 'Gene', '5609', (89, 92)) ('MAX', 'Gene', (151, 154)) ('TMEM127', 'Gene', '55654', (135, 142)) ('activation', 'PosReg', (40, 50)) ('HRAS', 'Gene', '3265', (120, 124)) ('RAF', 'Gene', (85, 88)) ('HRAS', 'Gene', (120, 124)) ('MEK', 'Gene', (89, 92)) ('kinase signaling pathways', 'Pathway', (54, 79)) ('MAX', 'Gene', '4149', (159, 162)) ('RET', 'Gene', '5979', (115, 118)) 65123 30345003 A small proportion of PPGLs show additional kinase signaling pathway-associated mutations in FGFR1, KIF1B, and MET but these still need to be validated. ('PGLs', 'Phenotype', 'HP:0002668', (23, 27)) ('mutations', 'Var', (80, 89)) ('PPGLs', 'Gene', (22, 27)) ('PPGLs', 'Chemical', '-', (22, 27)) ('KIF1B', 'Gene', '23095', (100, 105)) ('KIF1B', 'Gene', (100, 105)) ('kinase signaling pathway-associated', 'Pathway', (44, 79)) ('FGFR1', 'Gene', (93, 98)) ('MET', 'Gene', (111, 114)) ('FGFR1', 'Gene', '2260', (93, 98)) 65125 30345003 Tumors in this group occur in 5 to 10% of PPGLs and in most cases are related to somatic mutations in tumor suppressor cold shock domain-containing E1 ( CSDE1) and oncogene mastermind-like transcriptional coactivator 3 ( MAML3). ('mastermind-like transcriptional coactivator 3', 'Gene', (173, 218)) ('tumor', 'Disease', (102, 107)) ('mastermind-like transcriptional coactivator 3', 'Gene', '55534', (173, 218)) ('PGLs', 'Phenotype', 'HP:0002668', (43, 47)) ('shock', 'Phenotype', 'HP:0031273', (124, 129)) ('tumor', 'Disease', 'MESH:D009369', (102, 107)) ('PPGLs', 'Chemical', '-', (42, 47)) ('Tumors', 'Disease', (0, 6)) ('CSDE1', 'Gene', (153, 158)) ('CSDE1', 'Gene', '7812', (153, 158)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('mutations', 'Var', (89, 98)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('related', 'Reg', (70, 77)) ('MAML3', 'Gene', '55534', (221, 226)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('MAML3', 'Gene', (221, 226)) 65126 30345003 Somatic mutations in five genes: ATRX, KMT2D, SETD2, TERT, and TP53:have a synergistic effect on PPGL tumorigenesis and raise the possibility of association with an excessively aggressive course of the disease. ('SETD2', 'Gene', (46, 51)) ('TERT', 'Gene', (53, 57)) ('TERT', 'Gene', '7015', (53, 57)) ('excessively aggressive', 'Phenotype', 'HP:0000718', (165, 187)) ('KMT2D', 'Gene', (39, 44)) ('KMT2D', 'Gene', '8085', (39, 44)) ('TP53', 'Gene', (63, 67)) ('TP53', 'Gene', '7157', (63, 67)) ('ATRX', 'Gene', '546', (33, 37)) ('tumor', 'Disease', 'MESH:D009369', (102, 107)) ('mutations', 'Var', (8, 17)) ('SETD2', 'Gene', '29072', (46, 51)) ('association', 'Interaction', (145, 156)) ('ATRX', 'Gene', (33, 37)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('tumor', 'Disease', (102, 107)) ('PPGL', 'Gene', (97, 101)) 65129 30345003 Pathogenesis-based knowledge had also allowed us to design new therapeutic approaches; the best example would be the use of specific HIF-2alpha antagonists (PT2399) and prolyl hydroxylase activators (R59949 and KRH102053) that promote HIF hydroxylation, thus restoring VHL-driven recognition and rapid degradation. ('HIF hydroxylation', 'MPA', (235, 252)) ('VHL', 'Gene', '7428', (269, 272)) ('HIF-2alpha', 'Gene', '2034', (133, 143)) ('R59949', 'Var', (200, 206)) ('KRH102053', 'Var', (211, 220)) ('restoring', 'PosReg', (259, 268)) ('HIF-2alpha', 'Gene', (133, 143)) ('VHL', 'Gene', (269, 272)) ('promote', 'PosReg', (227, 234)) ('rapid degradation', 'MPA', (296, 313)) 65133 29617662 Driver Fusions and Their Implications in the Development and Treatment of Human Cancers Gene fusions represent an important class of somatic alterations in cancer. ('Gene fusions', 'Var', (88, 100)) ('Human Cancers', 'Disease', (74, 87)) ('Human Cancers', 'Disease', 'MESH:D009369', (74, 87)) ('cancer', 'Disease', (156, 162)) ('cancer', 'Disease', 'MESH:D009369', (156, 162)) ('cancer', 'Phenotype', 'HP:0002664', (156, 162)) ('Cancer', 'Phenotype', 'HP:0002664', (80, 86)) ('Cancers', 'Phenotype', 'HP:0002664', (80, 87)) 65135 29617662 Integration of gene expression, copy number, and fusion annotation data revealed that fusions involving oncogenes tend to exhibit increased expression, whereas fusions involving tumor suppressors have the opposite effect. ('oncogenes', 'Gene', (104, 113)) ('tumor', 'Disease', (178, 183)) ('expression', 'MPA', (140, 150)) ('tumor', 'Disease', 'MESH:D009369', (178, 183)) ('increased', 'PosReg', (130, 139)) ('fusions', 'Var', (86, 93)) ('tumor', 'Phenotype', 'HP:0002664', (178, 183)) 65141 29617662 To date, many studies have focused on determining the landscape of SNPs, insertions, deletions, and copy number alterations in cancer genomes. ('cancer', 'Phenotype', 'HP:0002664', (127, 133)) ('deletions', 'Var', (85, 94)) ('SNPs', 'Var', (67, 71)) ('copy number alterations', 'Var', (100, 123)) ('cancer', 'Disease', 'MESH:D009369', (127, 133)) ('insertions', 'Var', (73, 83)) ('cancer', 'Disease', (127, 133)) 65142 29617662 Although such genomic alterations make up a large fraction of the typical tumor mutation burden, gene fusions also play a critical role in oncogenesis. ('alterations', 'Var', (22, 33)) ('tumor', 'Disease', (74, 79)) ('tumor', 'Disease', 'MESH:D009369', (74, 79)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) 65144 29617662 Gene fusions function as diagnostic markers for specific cancer types. ('Gene fusions', 'Var', (0, 12)) ('cancer', 'Disease', (57, 63)) ('cancer', 'Disease', 'MESH:D009369', (57, 63)) ('cancer', 'Phenotype', 'HP:0002664', (57, 63)) 65145 29617662 For example, a frequent translocation between chromosomes 11 and 22 creates a fusion between EWSR1 and FLI1 in Ewing's sarcoma. ('fusion', 'Var', (78, 84)) ('translocation', 'Var', (24, 37)) ('FLI1', 'Gene', (103, 107)) ('EWSR1', 'Gene', (93, 98)) ('FLI1', 'Gene', '2313', (103, 107)) ("Ewing's sarcoma", 'Disease', 'MESH:C563168', (111, 126)) ('EWSR1', 'Gene', '2130', (93, 98)) ("Ewing's sarcoma", 'Disease', (111, 126)) ('sarcoma', 'Phenotype', 'HP:0100242', (119, 126)) ("Ewing's sarcoma", 'Phenotype', 'HP:0012254', (111, 126)) 65152 29617662 performed breakpoint analysis on exon microarrays across 974 cancer samples and identified 198 candidate fusions in annotated cancer genes. ('cancer', 'Phenotype', 'HP:0002664', (126, 132)) ('cancer', 'Disease', 'MESH:D009369', (61, 67)) ('fusions', 'Var', (105, 112)) ('cancer', 'Disease', (61, 67)) ('cancer', 'Disease', (126, 132)) ('cancer', 'Disease', 'MESH:D009369', (126, 132)) ('cancer', 'Phenotype', 'HP:0002664', (61, 67)) 65154 29617662 Some studies focus on important classes of genes, such as kinase fusions, which may have particular structural properties that are selected for during oncogenesis and cancer progression. ('cancer', 'Phenotype', 'HP:0002664', (167, 173)) ('kinase fusions', 'Var', (58, 72)) ('cancer', 'Disease', (167, 173)) ('cancer', 'Disease', 'MESH:D009369', (167, 173)) 65168 29617662 Fusion events may be associated with altered expression of one or both of the fusion gene partners, a well-known example being multiple myeloma tumors in which translocation t(4;14) fuses the highly expressed IGH locus with the tyrosine protein kinase FGFR3. ('tumors', 'Phenotype', 'HP:0002664', (144, 150)) ('FGFR3', 'Gene', (252, 257)) ('myeloma tumors', 'Disease', 'MESH:D009101', (136, 150)) ('IGH', 'Gene', '3492', (209, 212)) ('IGH', 'Gene', (209, 212)) ('myeloma tumors', 'Disease', (136, 150)) ('multiple myeloma', 'Phenotype', 'HP:0006775', (127, 143)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) ('FGFR3', 'Gene', '2261', (252, 257)) ('translocation t', 'Var', (160, 175)) 65170 29617662 Figure 2A shows that between 6% (mesothelioma [MESO]) and 28% (KIRP) of kinase fusions displayed outlier overexpression of the kinase partner. ('mesothelioma', 'Disease', 'MESH:D008654', (33, 45)) ('fusions', 'Var', (79, 86)) ('mesothelioma', 'Disease', (33, 45)) ('overexpression', 'PosReg', (105, 119)) 65171 29617662 Oncogenes tended to show higher likelihoods of overexpression, whereas TSGs displayed lower likelihoods. ('Oncogenes', 'Var', (0, 9)) ('TSG', 'Gene', '57045', (71, 74)) ('overexpression', 'MPA', (47, 61)) ('TSG', 'Gene', (71, 74)) 65172 29617662 Between 3% (breast invasive carcinoma [BRCA]) and 38% (PCPG) of TSG fusions showed outlier underexpression, generally higher than both oncogenes and kinases. ('BRCA', 'Gene', (39, 43)) ('fusions', 'Var', (68, 75)) ('TSG', 'Gene', (64, 67)) ('breast invasive carcinoma', 'Disease', 'MESH:D018270', (12, 37)) ('breast invasive carcinoma', 'Phenotype', 'HP:0003002', (12, 37)) ('carcinoma', 'Phenotype', 'HP:0030731', (28, 37)) ('breast invasive carcinoma', 'Disease', (12, 37)) ('BRCA', 'Gene', '672', (39, 43)) ('underexpression', 'NegReg', (91, 106)) ('TSG', 'Gene', '57045', (64, 67)) 65174 29617662 Samples with fusions involving oncogenes, such as EGFR, ERBB2, and RET, showed increased expression of those genes relative to samples without fusions across cancer types. ('increased', 'PosReg', (79, 88)) ('expression', 'MPA', (89, 99)) ('cancer', 'Disease', 'MESH:D009369', (158, 164)) ('RET', 'Gene', '5979', (67, 70)) ('EGFR', 'Gene', '1956', (50, 54)) ('fusions', 'Var', (13, 20)) ('cancer', 'Disease', (158, 164)) ('ERBB2', 'Gene', '2064', (56, 61)) ('EGFR', 'Gene', (50, 54)) ('ERBB2', 'Gene', (56, 61)) ('RET', 'Gene', (67, 70)) ('cancer', 'Phenotype', 'HP:0002664', (158, 164)) 65178 29617662 For example, TP53 is affected by mutations rather than fusions in most cancer types. ('TP53', 'Gene', (13, 17)) ('cancer', 'Disease', 'MESH:D009369', (71, 77)) ('cancer', 'Disease', (71, 77)) ('mutations', 'Var', (33, 42)) ('affected', 'Reg', (21, 29)) ('cancer', 'Phenotype', 'HP:0002664', (71, 77)) ('TP53', 'Gene', '7157', (13, 17)) 65179 29617662 However, in sarcoma (SARC), both fusions and mutations affecting TP53 were detected. ('mutations', 'Var', (45, 54)) ('TP53', 'Gene', '7157', (65, 69)) ('sarcoma', 'Disease', 'MESH:D012509', (12, 19)) ('TP53', 'Gene', (65, 69)) ('sarcoma', 'Disease', (12, 19)) ('fusions', 'Var', (33, 40)) ('sarcoma', 'Phenotype', 'HP:0100242', (12, 19)) ('detected', 'Reg', (75, 83)) 65180 29617662 In acute myeloid leukemia (LAML), several CBFB fusions but no mutations were observed, yet other cancer types also exhibited CBFB mutations (Table S3; Figure S2). ('CBFB', 'Gene', '865', (125, 129)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (9, 25)) ('cancer', 'Disease', (97, 103)) ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (3, 25)) ('leukemia', 'Phenotype', 'HP:0001909', (17, 25)) ('CBFB', 'Gene', (42, 46)) ('cancer', 'Disease', 'MESH:D009369', (97, 103)) ('exhibited', 'Reg', (115, 124)) ('CBFB', 'Gene', (125, 129)) ('cancer', 'Phenotype', 'HP:0002664', (97, 103)) ('mutations', 'Var', (130, 139)) ('fusions', 'Var', (47, 54)) ('acute myeloid leukemia', 'Disease', (3, 25)) ('CBFB', 'Gene', '865', (42, 46)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (3, 25)) 65184 29617662 Recurrent CBFB-MYH11 fusions in LAML are significantly associated with decreased expression of the tumor suppressor CBFB, which functions as a transcriptional regulator (Figure 2D). ('tumor', 'Disease', (99, 104)) ('CBFB', 'Gene', (10, 14)) ('MYH11', 'Gene', '4629', (15, 20)) ('MYH11', 'Gene', (15, 20)) ('tumor', 'Disease', 'MESH:D009369', (99, 104)) ('CBFB', 'Gene', '865', (116, 120)) ('fusions', 'Var', (21, 28)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('CBFB', 'Gene', '865', (10, 14)) ('decreased', 'NegReg', (71, 80)) ('expression', 'MPA', (81, 91)) ('CBFB', 'Gene', (116, 120)) 65185 29617662 In breast cancer, copy number amplification is a well-known mechanism of ERBB2 overexpression, and treatment of these HER2+ patients with trastuzumab is an established and effective targeted therapy. ('breast cancer', 'Disease', 'MESH:D001943', (3, 16)) ('copy number amplification', 'Var', (18, 43)) ('cancer', 'Phenotype', 'HP:0002664', (10, 16)) ('HER2', 'Gene', (118, 122)) ('breast cancer', 'Disease', (3, 16)) ('breast cancer', 'Phenotype', 'HP:0003002', (3, 16)) ('trastuzumab', 'Chemical', 'MESH:D000068878', (138, 149)) ('HER2', 'Gene', '2064', (118, 122)) ('overexpression', 'PosReg', (79, 93)) ('ERBB2', 'Gene', (73, 78)) ('ERBB2', 'Gene', '2064', (73, 78)) ('patients', 'Species', '9606', (124, 132)) 65186 29617662 Interestingly, three of four samples with ERBB2 fusions and two samples without a called fusion showed HPV integration within 1 Mb of ERBB2. ('fusions', 'Var', (48, 55)) ('ERBB2', 'Gene', '2064', (134, 139)) ('ERBB2', 'Gene', (134, 139)) ('ERBB2', 'Gene', '2064', (42, 47)) ('ERBB2', 'Gene', (42, 47)) ('HPV integration', 'CPA', (103, 118)) 65189 29617662 Comparison of kinase fusions across different cancer types indicated that kinase fusions are significantly enriched in THCA (35.6%, Fisher's exact test, p < 2.2e-16) (Figure 3B). ('cancer', 'Disease', 'MESH:D009369', (46, 52)) ('cancer', 'Disease', (46, 52)) ('THCA', 'Disease', (119, 123)) ('kinase fusions', 'Var', (74, 88)) ('cancer', 'Phenotype', 'HP:0002664', (46, 52)) 65193 29617662 For example, there are more TK fusions in THCA and GBM, more CK1 fusions in uterine corpus endometrial carcinoma (UCEC), colon adenocarcinoma (COAD), and esophageal carcinoma (ESCA) and more AGC fusions in liver hepatocellular carcinoma (LIHC). ('colon adenocarcinoma', 'Disease', (121, 141)) ('TK fusions', 'Var', (28, 38)) ('carcinoma', 'Phenotype', 'HP:0030731', (103, 112)) ('esophageal carcinoma', 'Disease', 'MESH:D004938', (154, 174)) ('COAD', 'Disease', (143, 147)) ('liver hepatocellular carcinoma', 'Disease', 'MESH:D006528', (206, 236)) ('CK1', 'Gene', (61, 64)) ('carcinoma', 'Phenotype', 'HP:0030731', (165, 174)) ('esophageal carcinoma', 'Disease', (154, 174)) ('endometrial carcinoma', 'Phenotype', 'HP:0012114', (91, 112)) ('LIHC', 'Disease', (238, 242)) ('colon adenocarcinoma', 'Disease', 'MESH:D003110', (121, 141)) ('corpus endometrial carcinoma', 'Disease', (84, 112)) ('corpus endometrial carcinoma', 'Disease', 'MESH:D016889', (84, 112)) ('fusions', 'Var', (65, 72)) ('carcinoma', 'Phenotype', 'HP:0030731', (227, 236)) ('CK1', 'Species', '2498238', (61, 64)) ('esophageal carcinoma', 'Phenotype', 'HP:0011459', (154, 174)) ('carcinoma', 'Phenotype', 'HP:0030731', (132, 141)) ('liver hepatocellular carcinoma', 'Disease', (206, 236)) ('LIHC', 'Disease', 'None', (238, 242)) ('COAD', 'Disease', 'MESH:D029424', (143, 147)) ('hepatocellular carcinoma', 'Phenotype', 'HP:0001402', (212, 236)) 65194 29617662 Across different cancer types, we found an enrichment of TK and TKL kinase fusions for 3'-kinases but no strong preference for 5'-kinases (Figure S3). ('TKL', 'Gene', (64, 67)) ('fusions', 'Var', (75, 82)) ("3'-kinases", 'MPA', (87, 97)) ('cancer', 'Disease', 'MESH:D009369', (17, 23)) ('TKL', 'Gene', '7294', (64, 67)) ('cancer', 'Disease', (17, 23)) ('cancer', 'Phenotype', 'HP:0002664', (17, 23)) 65196 29617662 As expected, fusions in the FGFR kinase family (FGFR2 and FGFR3) are the most frequent 5'-kinase fusions, given their high recurrence in individual cancer types (Figure 3C). ('cancer', 'Disease', (148, 154)) ('FGFR2', 'Gene', (48, 53)) ('cancer', 'Disease', 'MESH:D009369', (148, 154)) ('FGFR2', 'Gene', '2263', (48, 53)) ('FGFR3', 'Gene', '2261', (58, 63)) ('cancer', 'Phenotype', 'HP:0002664', (148, 154)) ('FGFR3', 'Gene', (58, 63)) ('fusions', 'Var', (13, 20)) 65206 29617662 For example, we found a TRABD-DDR2 fusion in one head and neck squamous cell carcinoma (HNSC) sample, which fused the stronger TRABD promoter with DDR2, resulting in its overexpression (Figure 4D). ('neck squamous cell carcinoma', 'Disease', (58, 86)) ('DDR2', 'Gene', (30, 34)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (63, 86)) ('DDR2', 'Gene', '4921', (30, 34)) ('DDR2', 'Gene', '4921', (147, 151)) ('neck squamous cell carcinoma', 'Disease', 'MESH:D000077195', (58, 86)) ('carcinoma', 'Phenotype', 'HP:0030731', (77, 86)) ('fusion', 'Var', (35, 41)) ('DDR2', 'Gene', (147, 151)) ('overexpression', 'PosReg', (170, 184)) 65208 29617662 DDR2 fusions were also detected in another nine samples from five different cancer types, which could be treated similarly given sufficient DDR2 overexpression (Table S1). ('fusions', 'Var', (5, 12)) ('DDR2', 'Gene', '4921', (0, 4)) ('cancer', 'Phenotype', 'HP:0002664', (76, 82)) ('DDR2', 'Gene', '4921', (140, 144)) ('DDR2', 'Gene', (140, 144)) ('cancer', 'Disease', (76, 82)) ('DDR2', 'Gene', (0, 4)) ('overexpression', 'PosReg', (145, 159)) ('cancer', 'Disease', 'MESH:D009369', (76, 82)) 65209 29617662 Although mutations in oncogenes or TSGs may lead to tumorigenesis, fusions involving those genes are also an important class of cancer driver events. ('cancer', 'Disease', 'MESH:D009369', (128, 134)) ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('lead to', 'Reg', (44, 51)) ('tumor', 'Disease', (52, 57)) ('TSG', 'Gene', '57045', (35, 38)) ('mutations', 'Var', (9, 18)) ('oncogenes', 'Gene', (22, 31)) ('cancer', 'Phenotype', 'HP:0002664', (128, 134)) ('tumor', 'Disease', 'MESH:D009369', (52, 57)) ('TSG', 'Gene', (35, 38)) ('cancer', 'Disease', (128, 134)) 65211 29617662 We characterized patients as having a driver mutation, a mutation in a driver gene, and/or a driver fusion (fusion involving a driver gene). ('mutation', 'Var', (57, 65)) ('driver fusion', 'Disease', (93, 106)) ('driver gene', 'Gene', (71, 82)) ('driver', 'Disease', (38, 44)) ('patients', 'Species', '9606', (17, 25)) 65212 29617662 Although the majority of cancer cases have known driver mutations (48.6%, mean 6.8 mutations) or mutations in driver genes (28.1%, mean 4.2 mutations), we found that 8.3% have both driver mutations and driver fusion events (mean 5.5 mutations and 1.2 fusions), 6.4% have both mutations and fusions in driver genes (mean 4.2 mutations and 1.3 fusions), and 1.8% have driver fusions only (mean 1.1 fusions) (Figure 5A). ('mutations', 'Var', (97, 106)) ('mutations', 'Var', (56, 65)) ('mutations', 'Var', (324, 333)) ('cancer', 'Phenotype', 'HP:0002664', (25, 31)) ('mutations', 'Var', (276, 285)) ('fusions', 'Var', (290, 297)) ('cancer', 'Disease', 'MESH:D009369', (25, 31)) ('cancer', 'Disease', (25, 31)) 65214 29617662 The significant decrease in the numbers of mutations (Mann-Whitney U test, p < 2.2e-16) reflects the functionality of fusions across multiple cancer types. ('multiple cancer', 'Disease', (133, 148)) ('decrease', 'NegReg', (16, 24)) ('cancer', 'Phenotype', 'HP:0002664', (142, 148)) ('mutations', 'Var', (43, 52)) ('multiple cancer', 'Disease', 'MESH:D009369', (133, 148)) 65215 29617662 Moreover, within cancer types, we observed a range of 0.2% (HNSC) to 14.0% (LAML) of tumors with fusions but no driver gene mutations. ('cancer', 'Phenotype', 'HP:0002664', (17, 23)) ('fusions', 'Var', (97, 104)) ('cancer', 'Disease', 'MESH:D009369', (17, 23)) ('cancer', 'Disease', (17, 23)) ('tumors', 'Disease', (85, 91)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('tumors', 'Phenotype', 'HP:0002664', (85, 91)) ('tumors', 'Disease', 'MESH:D009369', (85, 91)) 65224 29617662 Several Food and Drug Administration (FDA)-approved drugs exist to target ALK fusions in lung and other cancer types. ('ALK', 'Gene', (74, 77)) ('lung', 'Disease', (89, 93)) ('cancer', 'Phenotype', 'HP:0002664', (104, 110)) ('fusions', 'Var', (78, 85)) ('ALK', 'Gene', '238', (74, 77)) ('cancer', 'Disease', (104, 110)) ('cancer', 'Disease', 'MESH:D009369', (104, 110)) 65226 29617662 In most cases, fusion status corresponded to copy number neutral overexpression of ALK (Figure 6D). ('ALK', 'Gene', '238', (83, 86)) ('copy number neutral', 'Var', (45, 64)) ('corresponded', 'Reg', (29, 41)) ('overexpression', 'PosReg', (65, 79)) ('ALK', 'Gene', (83, 86)) 65229 29617662 We detected ESR1 fusions in 16 samples from five different cancer types (9 samples from BRCA). ('ESR1', 'Gene', '2099', (12, 16)) ('cancer', 'Phenotype', 'HP:0002664', (59, 65)) ('fusions', 'Var', (17, 24)) ('BRCA', 'Gene', '672', (88, 92)) ('ESR1', 'Gene', (12, 16)) ('cancer', 'Disease', (59, 65)) ('cancer', 'Disease', 'MESH:D009369', (59, 65)) ('BRCA', 'Gene', (88, 92)) ('detected', 'Reg', (3, 11)) 65231 29617662 We observed strict mutual exclusivity between ESR1 mutations and fusions (Figure 5C). ('ESR1', 'Gene', (46, 50)) ('mutations', 'Var', (51, 60)) ('ESR1', 'Gene', '2099', (46, 50)) 65236 29617662 Similarly, ESR1 expression is higher when ESR1 is mutated in BRCA, CESC, and UCEC, which are all hormone receptor-related cancer types. ('ESR1', 'Gene', '2099', (11, 15)) ('higher', 'PosReg', (30, 36)) ('UCEC', 'Disease', (77, 81)) ('cancer', 'Disease', (122, 128)) ('ESR1', 'Gene', (42, 46)) ('cancer', 'Disease', 'MESH:D009369', (122, 128)) ('CESC', 'Disease', (67, 71)) ('hormone receptor', 'Gene', (97, 113)) ('mutated', 'Var', (50, 57)) ('ESR1', 'Gene', (11, 15)) ('ESR1', 'Gene', '2099', (42, 46)) ('hormone receptor', 'Gene', '3164', (97, 113)) ('cancer', 'Phenotype', 'HP:0002664', (122, 128)) ('BRCA', 'Gene', '672', (61, 65)) ('expression', 'MPA', (16, 26)) ('BRCA', 'Gene', (61, 65)) 65237 29617662 Further functional study to determine the mechanism of ESR1 fusions could suggest drug development directions. ('ESR1', 'Gene', (55, 59)) ('ESR1', 'Gene', '2099', (55, 59)) ('fusions', 'Var', (60, 67)) 65240 29617662 However, patients with known driver fusions may be poor candidates for immunotherapy because of their reduced mutational burden, especially without clear evidence of immune cell infiltration and overall immunogenicity. ('patients', 'Species', '9606', (9, 17)) ('reduced', 'NegReg', (102, 109)) ('mutational burden', 'MPA', (110, 127)) ('fusions', 'Var', (36, 43)) 65248 29617662 When comparing fusion events with the remainder of the cancer cohort, fusions involving oncogenes such as EGFR, ERBB2, and RET had increased expression. ('ERBB2', 'Gene', '2064', (112, 117)) ('increased', 'PosReg', (131, 140)) ('ERBB2', 'Gene', (112, 117)) ('RET', 'Gene', (123, 126)) ('cancer', 'Phenotype', 'HP:0002664', (55, 61)) ('expression', 'MPA', (141, 151)) ('EGFR', 'Gene', '1956', (106, 110)) ('RET', 'Gene', '5979', (123, 126)) ('cancer', 'Disease', 'MESH:D009369', (55, 61)) ('fusions', 'Var', (70, 77)) ('cancer', 'Disease', (55, 61)) ('EGFR', 'Gene', (106, 110)) 65250 29617662 In addition to well-known recurrent fusions such as FGFR3-TACC3, we also detected 245 kinases with recurrent fusions to different partner genes, which may ultimately prove to be successful drug targets. ('TACC3', 'Gene', '10460', (58, 63)) ('FGFR3', 'Gene', '2261', (52, 57)) ('TACC3', 'Gene', (58, 63)) ('fusions', 'Var', (109, 116)) ('FGFR3', 'Gene', (52, 57)) 65251 29617662 We showed that a meaningful percentage of patients (1.8%) harbor fusions involving cancer driver genes but have no driver gene mutations. ('cancer', 'Phenotype', 'HP:0002664', (83, 89)) ('cancer', 'Disease', 'MESH:D009369', (83, 89)) ('patients', 'Species', '9606', (42, 50)) ('fusions', 'Var', (65, 72)) ('cancer', 'Disease', (83, 89)) 65254 29617662 The significant decrease in mutational burden observed in patients with fusions in driver genes points toward a reduced efficacy of immunotherapy in these patients, despite fusion peptides themselves potentially being good immunogenic targets. ('decrease', 'NegReg', (16, 24)) ('efficacy of immunotherapy', 'CPA', (120, 145)) ('patients', 'Species', '9606', (155, 163)) ('mutational burden', 'MPA', (28, 45)) ('reduced', 'NegReg', (112, 119)) ('patients', 'Species', '9606', (58, 66)) ('fusions', 'Var', (72, 79)) 65256 29617662 We sought to prioritize fusions relevant to cancer by highlighting their associations with gene expression, potential for targeted therapy, and roles in cancer hallmark pathways. ('cancer', 'Disease', 'MESH:D009369', (153, 159)) ('gene expression', 'MPA', (91, 106)) ('cancer', 'Disease', (153, 159)) ('cancer', 'Phenotype', 'HP:0002664', (44, 50)) ('associations', 'Interaction', (73, 85)) ('cancer', 'Disease', (44, 50)) ('cancer', 'Disease', 'MESH:D009369', (44, 50)) ('cancer', 'Phenotype', 'HP:0002664', (153, 159)) ('fusions', 'Var', (24, 31)) 65258 29617662 Fusions play an increasingly appreciated role in tumorigenesis and progression and represent an important source of improved treatment options. ('tumor', 'Disease', 'MESH:D009369', (49, 54)) ('progression', 'CPA', (67, 78)) ('Fusions', 'Var', (0, 7)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('tumor', 'Disease', (49, 54)) 65273 29617662 The percentage of kinase genes in each group across different cancer types was defined as the number of kinase genes with fusions in each group divided by their sum, denoted as pg. ('fusions', 'Var', (122, 129)) ('cancer', 'Disease', (62, 68)) ('cancer', 'Disease', 'MESH:D009369', (62, 68)) ('cancer', 'Phenotype', 'HP:0002664', (62, 68)) 65278 29617662 For TCGA tumor samples where both MC3 (Key Resources Table) mutation calls and gene fusion calls were available, we obtained the genetic alteration events, including fusion, inframe deletion, inframe insertion, missense mutation, nonsense mutation, nonstop mutation, splice site mutation, and translation start site mutation in 299 driver genes. ('nonstop', 'Disease', (249, 256)) ('tumor', 'Disease', 'MESH:D009369', (9, 14)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('nonsense mutation', 'Var', (230, 247)) ('missense mutation', 'Var', (211, 228)) ('tumor', 'Disease', (9, 14)) ('inframe insertion', 'Var', (192, 209)) ('splice', 'MPA', (267, 273)) ('MC3', 'Gene', (34, 37)) ('fusion', 'Var', (166, 172)) ('MC3', 'Gene', '4159', (34, 37)) 65280 29617662 Highly recurrent fusions were found in prostate, bladder, breast, and lung cancers Expression increased in oncogene fusions but decreased in tumor suppressor genes Thyroid carcinoma showed significantly higher rates of kinase fusions Tumors with fusion events tend to have lower mutational burden ('tumor', 'Disease', 'MESH:D009369', (141, 146)) ('increased', 'PosReg', (94, 103)) ('Tumors', 'Disease', 'MESH:D009369', (234, 240)) ('Expression', 'MPA', (83, 93)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('prostate', 'Disease', (39, 47)) ('Thyroid carcinoma', 'Phenotype', 'HP:0002890', (164, 181)) ('fusions', 'Var', (116, 123)) ('decreased', 'NegReg', (128, 137)) ('breast', 'Disease', (58, 64)) ('oncogene', 'Gene', (107, 115)) ('lung cancer', 'Phenotype', 'HP:0100526', (70, 81)) ('Tumors', 'Phenotype', 'HP:0002664', (234, 240)) ('lung cancers', 'Disease', 'MESH:D008175', (70, 82)) ('bladder', 'Disease', (49, 56)) ('carcinoma', 'Phenotype', 'HP:0030731', (172, 181)) ('cancers', 'Phenotype', 'HP:0002664', (75, 82)) ('lung cancers', 'Disease', (70, 82)) ('tumor', 'Disease', (141, 146)) ('Tumors', 'Disease', (234, 240)) ('cancer', 'Phenotype', 'HP:0002664', (75, 81)) ('lung cancers', 'Phenotype', 'HP:0100526', (70, 82)) ('Thyroid carcinoma', 'Disease', 'MESH:D013964', (164, 181)) ('Thyroid carcinoma', 'Disease', (164, 181)) 65328 11580870 CO2 pneumo peritoneum has been claimed to produce hypercapnia, respiratory acidosis, increase in the systemic vascular resistance, decreased cardiac index and increased mean arterial pressure. ('respiratory acidosis', 'Phenotype', 'HP:0005972', (63, 83)) ('hypercapnia', 'Phenotype', 'HP:0012416', (50, 61)) ('hypercapnia', 'Disease', (50, 61)) ('decreased', 'NegReg', (131, 140)) ('increased', 'PosReg', (159, 168)) ('hypercapnia', 'Disease', 'MESH:D006935', (50, 61)) ('respiratory acidosis', 'Disease', (63, 83)) ('mean arterial pressure', 'MPA', (169, 191)) ('cardiac index', 'MPA', (141, 154)) ('systemic vascular resistance', 'MPA', (101, 129)) ('respiratory acidosis', 'Disease', 'MESH:D000142', (63, 83)) ('CO2', 'Chemical', 'MESH:D002245', (0, 3)) ('increased mean arterial pressure', 'Phenotype', 'HP:0004972', (159, 191)) ('acidosis', 'Phenotype', 'HP:0001941', (75, 83)) ('CO2', 'Var', (0, 3)) ('increase', 'PosReg', (85, 93)) 65357 28924583 This situation is further compounded by the lack of assay standardisation and the use of different reporting units for both aldosterone (ng/dL, ng/L, pg/mL and pmol/L) and renin (PRA: ng/mL/h, nmol/L/h and pmol/L/min; DRC: muIU/mL, mIU/L and ng/L). ('ng/L', 'Var', (242, 246)) ('mIU', 'Chemical', '-', (232, 235)) ('mIU/L', 'Var', (232, 237)) ('renin', 'Gene', (172, 177)) ('nmol/L/h', 'Var', (193, 201)) ('PRA', 'Var', (179, 182)) ('renin', 'Gene', '5972', (172, 177)) ('aldosterone', 'Chemical', 'MESH:D000450', (124, 135)) ('pmol/L/min', 'Var', (206, 216)) 65373 28924583 In brief, the inclusion criteria for healthy volunteers were; age >=18years, BMI <=30 kg/m2, non-pregnant, BP<140/90 mm Hg, normal electrolytes and kidney function (MDRD equation eGFR>=60 mL/min/1.73 m2), non-smoker, Irish Caucasian, and not taking prescribed/Over The Counter (OTC) medications for a minimum of 3 months. ('min/1', 'Gene', '966', (191, 196)) ('MDRD', 'Disease', (165, 169)) ('BP<140/90', 'Var', (107, 116)) ('kidney function', 'MPA', (148, 163)) ('min/1', 'Gene', (191, 196)) ('MDRD', 'Disease', 'None', (165, 169)) 65407 28924583 When stratified according to gender, a cut-off of <=4.5 mIU/L in women and <=14.2 mIU/L in men resulted in a diagnostic sensitivity of 100% in both sexes and specificity of 98% and 89%, respectively. ('<=4.5', 'Var', (50, 55)) ('mIU', 'Chemical', '-', (82, 85)) ('men', 'Species', '9606', (67, 70)) ('men', 'Species', '9606', (91, 94)) ('<=14.2', 'Var', (75, 81)) ('women', 'Species', '9606', (65, 70)) ('mIU', 'Chemical', '-', (56, 59)) 65433 28924583 In men and women, the DRC ROC curve analyses (AUC=0.97) demonstrated the high predictive power of this biochemical marker to select out those patients without PA. A cut-off for DRC <=14.2 mIU/L resulted in a diagnostic sensitivity and specificity of 100% and 84%, respectively and likelihood ratio of 6.2:1. ('<=14.2', 'Var', (181, 187)) ('PA', 'Phenotype', 'HP:0011736', (159, 161)) ('mIU', 'Chemical', '-', (188, 191)) ('women', 'Species', '9606', (11, 16)) ('patients', 'Species', '9606', (142, 150)) ('DRC', 'MPA', (177, 180)) ('men', 'Species', '9606', (13, 16)) ('men', 'Species', '9606', (3, 6)) 65554 28685135 For larger tumors, suspicious lymph nodes, infiltrative margins upon local resection, nuclear pleomorphism, or high mitotic activity, they suggested pancreaticoduodenectomy with lymph node dissection. ('tumor', 'Phenotype', 'HP:0002664', (11, 16)) ('pancreatic', 'Disease', (149, 159)) ('nuclear pleomorphism', 'Var', (86, 106)) ('tumors', 'Phenotype', 'HP:0002664', (11, 17)) ('tumors', 'Disease', 'MESH:D009369', (11, 17)) ('tumors', 'Disease', (11, 17)) ('pancreatic', 'Disease', 'MESH:D010195', (149, 159)) ('high', 'Var', (111, 115)) 65623 28078330 Meanwhile, malignancy is reported in up to 70% among those with extra-adrenal tumors, and up to 50% of those with SDHB mutations. ('tumors', 'Phenotype', 'HP:0002664', (78, 84)) ('reported', 'Reg', (25, 33)) ('malignancy', 'Disease', 'MESH:D009369', (11, 21)) ('SDHB', 'Gene', '6390', (114, 118)) ('malignancy', 'Disease', (11, 21)) ('SDHB', 'Gene', (114, 118)) ('tumor', 'Phenotype', 'HP:0002664', (78, 83)) ('extra-adrenal tumors', 'Disease', 'MESH:D010236', (64, 84)) ('extra-adrenal tumors', 'Disease', (64, 84)) ('mutations', 'Var', (119, 128)) 65720 28078330 Because metyrosine takes 3 days to reach its full effect, and because it results in incomplete blockade, institutions that advocate use of catecholamine synthesis blockade use this in tandem with alpha- or calcium-channel blockade. ('catecholamine synthesis blockade', 'Phenotype', 'HP:0003334', (139, 171)) ('blockade', 'MPA', (95, 103)) ('metyrosine', 'Var', (8, 18)) ('catecholamine', 'Chemical', 'MESH:D002395', (139, 152)) ('metyrosine', 'Chemical', 'MESH:D019805', (8, 18)) ('calcium', 'Chemical', 'MESH:D002118', (206, 213)) 65738 28078330 In patients who received phenoxybenzamine, the irreversible alpha blockade can contribute to hypotension in the first 24 hours or longer (half-life is 10 days) after tumor removal, and thus, fluid resuscitation becomes paramount. ('tumor', 'Disease', 'MESH:D009369', (166, 171)) ('hypotension', 'Disease', (93, 104)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (25, 41)) ('tumor', 'Phenotype', 'HP:0002664', (166, 171)) ('hypotension', 'Phenotype', 'HP:0002615', (93, 104)) ('tumor', 'Disease', (166, 171)) ('phenoxybenzamine', 'Var', (25, 41)) ('contribute to', 'Reg', (79, 92)) ('patients', 'Species', '9606', (3, 11)) ('hypotension', 'Disease', 'MESH:D007022', (93, 104)) 65740 28078330 Pheo-induced stimulation of the alpha-2 receptor can inhibit insulin release leading to hyperglycemia. ('Pheo-induced', 'Var', (0, 12)) ('inhibit', 'NegReg', (53, 60)) ('hyperglycemia', 'Disease', (88, 101)) ('stimulation', 'PosReg', (13, 24)) ('insulin release', 'MPA', (61, 76)) ('alpha-2 receptor', 'Protein', (32, 48)) ('hyperglycemia', 'Phenotype', 'HP:0003074', (88, 101)) ('hyperglycemia', 'Disease', 'MESH:D006943', (88, 101)) ('Pheo', 'Chemical', '-', (0, 4)) 65741 28078330 Discontinuation of this stimulus can result in hyperinsulinemia and hypoglycemia. ('hypoglycemia', 'Phenotype', 'HP:0001943', (68, 80)) ('result in', 'Reg', (37, 46)) ('hyperinsulinemia and hypoglycemia', 'Disease', 'MESH:D044903', (47, 80)) ('hyperinsulinemia', 'Phenotype', 'HP:0000842', (47, 63)) ('Discontinuation', 'Var', (0, 15)) 65746 28078330 Larger tumor size, sympathetic paragangliomas (rather than pheochromocytomas stemming from adrenal gland), and succinate dehydrogenase B (SDHB) mutations are associated with decreased overall survival as these clinical characteristics are associated with a higher risk of metastases. ('metastases', 'Disease', 'MESH:D009362', (272, 282)) ('overall survival', 'MPA', (184, 200)) ('succinate dehydrogenase B', 'Gene', (111, 136)) ('metastases', 'Disease', (272, 282)) ('mutations', 'Var', (144, 153)) ('tumor', 'Phenotype', 'HP:0002664', (7, 12)) ('paragangliomas', 'Disease', 'MESH:D010235', (31, 45)) ('paragangliomas', 'Phenotype', 'HP:0002668', (31, 45)) ('pheochromocytomas stemming from adrenal', 'Phenotype', 'HP:0006748', (59, 98)) ('paraganglioma', 'Phenotype', 'HP:0002668', (31, 44)) ('succinate dehydrogenase B', 'Gene', '6390', (111, 136)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (59, 75)) ('SDHB', 'Gene', '6390', (138, 142)) ('pheochromocytomas stemming', 'Phenotype', 'HP:0002666', (59, 85)) ('decreased', 'NegReg', (174, 183)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (59, 76)) ('pheochromocytomas', 'Disease', (59, 76)) ('SDHB', 'Gene', (138, 142)) ('tumor', 'Disease', (7, 12)) ('paragangliomas', 'Disease', (31, 45)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (59, 76)) ('tumor', 'Disease', 'MESH:D009369', (7, 12)) 65767 28078330 As mentioned previously, those patients with mutations of the SDHB gene carry a significantly higher risk of malignant disease. ('mutations', 'Var', (45, 54)) ('malignant disease', 'Disease', (109, 126)) ('patients', 'Species', '9606', (31, 39)) ('SDHB', 'Gene', '6390', (62, 66)) ('SDHB', 'Gene', (62, 66)) ('malignant disease', 'Disease', 'MESH:D009369', (109, 126)) 65809 24520306 I131-methyliodobenzylguanidine (MIBG) is an analog of norepinephrine and is absorbed by the paraganglioma tissue. ('paraganglioma', 'Disease', (92, 105)) ('norepinephrine', 'Chemical', 'MESH:D009638', (54, 68)) ('paraganglioma', 'Disease', 'MESH:D010235', (92, 105)) ('I131-methyliodobenzylguanidine', 'Var', (0, 30)) ('MIBG', 'Chemical', '-', (32, 36)) ('I131-methyliodobenzylguanidine', 'Chemical', '-', (0, 30)) ('paraganglioma', 'Phenotype', 'HP:0002668', (92, 105)) 65810 24520306 I131-MIBG has been used in diagnosing and localizing extra-adrenal paraganglioma with a specificity close to 100% and a sensitivity approaching 90%. ('I131-MIBG', 'Var', (0, 9)) ('extra-adrenal paraganglioma', 'Disease', (53, 80)) ('extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (53, 80)) ('MIBG', 'Chemical', '-', (5, 9)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) 65840 23933153 We have moved from the "10% tumor" to the "10 gene tumor" to our current understanding of 13 susceptibility genes: the von Hippel-Lindau (VHL) gene; the RET gene in multiple endocrine neoplasia type 2 (MEN2); the neurofibromatosis type 1 (NF-1) gene associated with von Recklinghausen's disease; mutations of the A, B, C, and D subunits of the mitochondrial succinate dehydrogenase complex (SDH); the SDHAF2 gene; TMEM127 gene mutations; MAX gene mutations; PHD2; and the recently described: H-RAS and gain-of-function HIF2alpha mutations. ('NF-1', 'Gene', (239, 243)) ('von Hippel-Lindau', 'Gene', (119, 136)) ('tumor', 'Disease', (28, 33)) ('TMEM127', 'Gene', (414, 421)) ('neurofibromatosis type 1', 'Gene', (213, 237)) ('RET', 'Gene', '5979', (153, 156)) ('tumor', 'Disease', 'MESH:D009369', (28, 33)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (213, 230)) ('SDH', 'Chemical', '-', (401, 404)) ('PHD2', 'Gene', (458, 462)) ('succinate', 'Chemical', 'MESH:D019802', (358, 367)) ('von Hippel-Lindau', 'Gene', '7428', (119, 136)) ('tumor', 'Disease', (51, 56)) ('neoplasia', 'Phenotype', 'HP:0002664', (184, 193)) ('TMEM127', 'Gene', '55654', (414, 421)) ('MAX gene', 'Gene', (438, 446)) ('mutations', 'Var', (529, 538)) ('VHL', 'Gene', (138, 141)) ('neurofibroma', 'Phenotype', 'HP:0001067', (213, 225)) ('tumor', 'Disease', 'MESH:D009369', (51, 56)) ('endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (174, 200)) ('SDH', 'Chemical', '-', (391, 394)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) ('HIF2alpha', 'Gene', (519, 528)) ('RET', 'Gene', (153, 156)) ('neurofibromatosis type 1', 'Gene', '4763', (213, 237)) ('PHD2', 'Gene', '54583', (458, 462)) ("von Recklinghausen's disease", 'Disease', 'MESH:C537392', (266, 294)) ('endocrine neoplasia type 2', 'Disease', (174, 200)) ('mutations', 'Var', (427, 436)) ('SDHAF2', 'Gene', '54949', (401, 407)) ('associated', 'Reg', (250, 260)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (174, 193)) ('SDHAF2', 'Gene', (401, 407)) ('gain-of-function', 'PosReg', (502, 518)) ("von Recklinghausen's disease", 'Disease', (266, 294)) ('H-RAS', 'Gene', (492, 497)) ('VHL', 'Gene', '7428', (138, 141)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('MEN', 'Species', '9606', (202, 205)) ('HIF2alpha', 'Gene', '2034', (519, 528)) ('H-RAS', 'Gene', '3265', (492, 497)) ('mutations', 'Var', (447, 456)) ('NF-1', 'Gene', '4763', (239, 243)) ('mutations', 'Var', (296, 305)) 65841 23933153 Approximately 35% of pheochromocytomas/paragangliomas are associated with an inherited mutation and, as recently reported, approximately 14% of sporadic tumors demonstrate somatic mutations. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (21, 38)) ('sporadic tumors', 'Disease', 'MESH:D009369', (144, 159)) ('associated', 'Reg', (58, 68)) ('pheochromocytomas/paragangliomas', 'Disease', (21, 53)) ('gliomas', 'Phenotype', 'HP:0009733', (46, 53)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('sporadic tumors', 'Disease', (144, 159)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (21, 53)) ('tumors', 'Phenotype', 'HP:0002664', (153, 159)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (21, 37)) ('paragangliomas', 'Phenotype', 'HP:0002668', (39, 53)) ('mutation', 'Var', (87, 95)) ('paraganglioma', 'Phenotype', 'HP:0002668', (39, 52)) 65845 23933153 Currently, pheochromocytoma/paraganglioma predisposing genetic mutations are most commonly clustered based on transcriptomes: Cluster 1 = hypoxic transcriptional signature (SDH genes = 1A and VHL gene = 1B), HIF2alpha; Cluster 2 = kinase receptor signaling and protein translation (RET, NF1, TMEM127, MAX). ('mutations', 'Var', (63, 72)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (11, 27)) ('HIF2alpha', 'Gene', '2034', (208, 217)) ('pheochromocytoma/paraganglioma', 'Disease', (11, 41)) ('RET', 'Gene', '5979', (282, 285)) ('HIF2alpha', 'Gene', (208, 217)) ('SDH', 'Chemical', '-', (173, 176)) ('paraganglioma', 'Phenotype', 'HP:0002668', (28, 41)) ('hypoxic', 'Disease', (138, 145)) ('hypoxic', 'Disease', 'MESH:D000860', (138, 145)) ('VHL', 'Gene', (192, 195)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (11, 41)) ('RET', 'Gene', (282, 285)) ('VHL', 'Gene', '7428', (192, 195)) ('TMEM127', 'Gene', (292, 299)) ('TMEM127', 'Gene', '55654', (292, 299)) 65851 23933153 Loss of function mutations in the VHL gene results in stabilization of HIFalpha leading to downstream transcription of cellular proliferation genes and to von Hippel-Lindau disease. ('stabilization', 'MPA', (54, 67)) ('HIFalpha', 'MPA', (71, 79)) ('von Hippel-Lindau disease', 'Disease', (155, 180)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (155, 180)) ('Loss of function', 'NegReg', (0, 16)) ('VHL', 'Gene', (34, 37)) ('downstream transcription', 'MPA', (91, 115)) ('cellular proliferation genes', 'Gene', (119, 147)) ('VHL', 'Gene', '7428', (34, 37)) ('mutations', 'Var', (17, 26)) 65862 23933153 Activating mutations of this proto-oncogene lead to the autosomal dominant syndrome known as multiple endocrine neoplasia type 2 (MEN 2). ('lead to', 'Reg', (44, 51)) ('autosomal dominant syndrome', 'Disease', 'MESH:D030342', (56, 83)) ('MEN', 'Species', '9606', (130, 133)) ('Activating mutations', 'Var', (0, 20)) ('endocrine neoplasia type 2', 'Disease', (102, 128)) ('neoplasia', 'Phenotype', 'HP:0002664', (112, 121)) ('endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (102, 128)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (102, 121)) ('autosomal dominant syndrome', 'Disease', (56, 83)) 65864 23933153 MEN2A mutations are associated with a disulfide bond disruption causing active homodimers to increase tyrosine kinase activity. ('MEN2A', 'Gene', '5979', (0, 5)) ('active homodimers', 'MPA', (72, 89)) ('disulfide', 'Chemical', 'MESH:D004220', (38, 47)) ('MEN2A', 'Gene', (0, 5)) ('increase', 'PosReg', (93, 101)) ('disulfide bond disruption', 'MPA', (38, 63)) ('tyrosine kinase activity', 'MPA', (102, 126)) ('mutations', 'Var', (6, 15)) ('increase tyrosine kinase', 'Phenotype', 'HP:0003231', (93, 117)) 65865 23933153 MEN2B mutations are known to alter the substrate specificity of RET. ('substrate specificity', 'MPA', (39, 60)) ('MEN2B', 'Gene', '5979', (0, 5)) ('RET', 'Gene', (64, 67)) ('RET', 'Gene', '5979', (64, 67)) ('mutations', 'Var', (6, 15)) ('MEN2B', 'Gene', (0, 5)) ('alter', 'Reg', (29, 34)) 65873 23933153 Inactivating mutations of NF1 lead to the autosomal dominant disorder von Recklinghausen's disease or neurofibromatosis type 1 (NF1). ('lead to', 'Reg', (30, 37)) ('neurofibromatosis type 1', 'Gene', (102, 126)) ('neurofibromatosis type 1', 'Gene', '4763', (102, 126)) ("autosomal dominant disorder von Recklinghausen's disease", 'Disease', 'MESH:C537392', (42, 98)) ('NF1', 'Gene', (26, 29)) ('Inactivating mutations', 'Var', (0, 22)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (102, 119)) ('neurofibroma', 'Phenotype', 'HP:0001067', (102, 114)) 65875 23933153 Patients with NF1 are at risk for the development of various tumors including neurofibromas, medullary thyroid carcinoma, carcinoid tumors, parathyroid tumors, peripheral nerve sheath tumors, and pheochromocytomas. ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (103, 120)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (93, 120)) ('neurofibromas', 'Phenotype', 'HP:0001067', (78, 91)) ('neurofibromas', 'Disease', 'MESH:D009455', (78, 91)) ('tumors', 'Disease', 'MESH:D009369', (184, 190)) ('carcinoid tumors', 'Disease', (122, 138)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (196, 212)) ('tumors', 'Disease', (152, 158)) ('tumors', 'Phenotype', 'HP:0002664', (61, 67)) ('peripheral nerve sheath tumors', 'Disease', (160, 190)) ('carcinoid', 'Phenotype', 'HP:0100570', (122, 131)) ('pheochromocytomas', 'Disease', (196, 213)) ('carcinoma', 'Phenotype', 'HP:0030731', (111, 120)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (196, 213)) ('Patients', 'Species', '9606', (0, 8)) ('tumors', 'Phenotype', 'HP:0002664', (132, 138)) ('neurofibroma', 'Phenotype', 'HP:0001067', (78, 90)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('tumors', 'Disease', 'MESH:D009369', (152, 158)) ('NF1', 'Var', (14, 17)) ('tumors', 'Disease', (61, 67)) ('neurofibromas', 'Disease', (78, 91)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('tumors', 'Phenotype', 'HP:0002664', (184, 190)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (196, 213)) ('tumors', 'Disease', (132, 138)) ('peripheral nerve sheath tumors', 'Disease', 'MESH:D010524', (160, 190)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (103, 120)) ('thyroid carcinoma', 'Disease', (103, 120)) ('tumors', 'Disease', 'MESH:D009369', (61, 67)) ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('tumor', 'Phenotype', 'HP:0002664', (184, 189)) ('tumors', 'Disease', (184, 190)) ('parathyroid tumors', 'Disease', 'MESH:D010282', (140, 158)) ('parathyroid tumors', 'Disease', (140, 158)) ('tumors', 'Disease', 'MESH:D009369', (132, 138)) ('tumors', 'Phenotype', 'HP:0002664', (152, 158)) ('carcinoid tumors', 'Disease', 'MESH:D002276', (122, 138)) 65882 23933153 Inactivating mutations of SDHx genes results in an accumulation of succinate and reactive oxygen free radicals, which can stabilize HIFalpha and thus activate the hypoxia dependent pathways. ('activate', 'PosReg', (150, 158)) ('succinate', 'MPA', (67, 76)) ('reactive oxygen free radicals', 'Chemical', '-', (81, 110)) ('SDHx', 'Gene', (26, 30)) ('SDHx', 'Chemical', '-', (26, 30)) ('Inactivating mutations', 'Var', (0, 22)) ('accumulation', 'PosReg', (51, 63)) ('succinate', 'Chemical', 'MESH:D019802', (67, 76)) ('hypoxia', 'Disease', 'MESH:D000860', (163, 170)) ('stabilize HIFalpha', 'MPA', (122, 140)) ('hypoxia', 'Disease', (163, 170)) 65892 23933153 Mutations in all four genes of the SDHx complex are now known to be associated with the development of pheochromocytoma/paraganglioma though the clinical presentation varies significantly depending on which gene is mutated. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (103, 119)) ('associated with', 'Reg', (68, 83)) ('paraganglioma', 'Phenotype', 'HP:0002668', (120, 133)) ('SDHx complex', 'Gene', (35, 47)) ('pheochromocytoma/paraganglioma', 'Disease', (103, 133)) ('Mutations', 'Var', (0, 9)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (103, 133)) ('SDHx', 'Chemical', '-', (35, 39)) 65893 23933153 The link between SDHA mutations and pheochromocytoma/paragangliomas was long hypothesized but not proven until 2011. ('SDHA', 'Gene', (17, 21)) ('pheochromocytoma/paragangliomas', 'Disease', (36, 67)) ('pheochromocytoma/paragangliomas', 'Disease', 'MESH:D010673', (36, 67)) ('gliomas', 'Phenotype', 'HP:0009733', (60, 67)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (36, 52)) ('mutations', 'Var', (22, 31)) ('SDHA', 'Gene', '6389', (17, 21)) ('paraganglioma', 'Phenotype', 'HP:0002668', (53, 66)) ('paragangliomas', 'Phenotype', 'HP:0002668', (53, 67)) 65897 23933153 later described 6 patients with SDHA mutations whose ages at presentation ranged from 27-77 years and who presented with an adrenal pheochromocytoma (1 patient), extra adrenal paragangliomas (3 patients), or head and neck paragangliomas (2 patients). ('extra adrenal paragangliomas', 'Phenotype', 'HP:0006737', (162, 190)) ('patient', 'Species', '9606', (194, 201)) ('gliomas', 'Phenotype', 'HP:0009733', (183, 190)) ('patient', 'Species', '9606', (240, 247)) ('patient', 'Species', '9606', (18, 25)) ('SDHA', 'Gene', (32, 36)) ('patient', 'Species', '9606', (152, 159)) ('paraganglioma', 'Phenotype', 'HP:0002668', (222, 235)) ('paragangliomas', 'Phenotype', 'HP:0002668', (222, 236)) ('extra adrenal paragangliomas', 'Disease', 'MESH:D010236', (162, 190)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (132, 148)) ('SDHA', 'Gene', '6389', (32, 36)) ('gliomas', 'Phenotype', 'HP:0009733', (229, 236)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (124, 148)) ('patients', 'Species', '9606', (194, 202)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (124, 148)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (217, 236)) ('head and neck paragangliomas', 'Disease', 'MESH:D006258', (208, 236)) ('mutations', 'Var', (37, 46)) ('patients', 'Species', '9606', (240, 248)) ('patients', 'Species', '9606', (18, 26)) ('adrenal pheochromocytoma', 'Disease', (124, 148)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (208, 236)) ('paragangliomas', 'Phenotype', 'HP:0002668', (176, 190)) ('paraganglioma', 'Phenotype', 'HP:0002668', (176, 189)) ('extra adrenal paragangliomas', 'Disease', (162, 190)) ('presented with', 'Reg', (106, 120)) 65898 23933153 described a 30-year-old male patient with a SDHA mutation who presented with a non-secretory pituitary adenoma that demonstrated loss of SDHA protein expression, similar to that of the patients' mother who presented with an SDHA-related paraganglioma. ('patient', 'Species', '9606', (29, 36)) ('pituitary adenoma', 'Disease', (93, 110)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (93, 110)) ('SDHA', 'Gene', (224, 228)) ('paraganglioma', 'Phenotype', 'HP:0002668', (237, 250)) ('loss', 'NegReg', (129, 133)) ('patient', 'Species', '9606', (185, 192)) ('mutation', 'Var', (49, 57)) ('SDHA', 'Gene', '6389', (44, 48)) ('SDHA', 'Gene', '6389', (137, 141)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (93, 110)) ('paraganglioma', 'Disease', (237, 250)) ('patients', 'Species', '9606', (185, 193)) ('SDHA', 'Gene', '6389', (224, 228)) ('SDHA', 'Gene', (44, 48)) ('SDHA', 'Gene', (137, 141)) ('paraganglioma', 'Disease', 'MESH:D010235', (237, 250)) 65899 23933153 This study suggests a potential role of SDHA mutations in the development of other tumors. ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('mutations', 'Var', (45, 54)) ('SDHA', 'Gene', '6389', (40, 44)) ('tumors', 'Disease', (83, 89)) ('tumors', 'Phenotype', 'HP:0002664', (83, 89)) ('tumors', 'Disease', 'MESH:D009369', (83, 89)) ('SDHA', 'Gene', (40, 44)) 65908 23933153 SDHB mutations are also known to be associated with an increased risk for development of other tumors such as renal cell carcinoma, gastrointestinal stromal tumors, breast cancer, and papillary thyroid cancer. ('carcinoma', 'Phenotype', 'HP:0030731', (121, 130)) ('cancer', 'Phenotype', 'HP:0002664', (202, 208)) ('breast cancer', 'Phenotype', 'HP:0003002', (165, 178)) ('gastrointestinal stromal tumors', 'Disease', (132, 163)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('tumor', 'Phenotype', 'HP:0002664', (157, 162)) ('tumors', 'Disease', (95, 101)) ('SDHB', 'Gene', (0, 4)) ('papillary thyroid cancer', 'Disease', (184, 208)) ('breast cancer', 'Disease', 'MESH:D001943', (165, 178)) ('tumors', 'Phenotype', 'HP:0002664', (157, 163)) ('breast cancer', 'Disease', (165, 178)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (110, 130)) ('tumors', 'Disease', 'MESH:D009369', (95, 101)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (184, 208)) ('tumors', 'Disease', (157, 163)) ('mutations', 'Var', (5, 14)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (194, 208)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (132, 163)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (132, 163)) ('associated', 'Reg', (36, 46)) ('renal cell carcinoma', 'Disease', (110, 130)) ('papillary thyroid cancer', 'Disease', 'MESH:D000077273', (184, 208)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (110, 130)) ('cancer', 'Phenotype', 'HP:0002664', (172, 178)) ('tumors', 'Disease', 'MESH:D009369', (157, 163)) ('SDHB', 'Gene', '6390', (0, 4)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) 65909 23933153 With the associations of these tumors, SDHx related mutations may eventually be considered a metabolic syndrome of sorts. ('mutations', 'Var', (52, 61)) ('tumor', 'Phenotype', 'HP:0002664', (31, 36)) ('SDHx', 'Chemical', '-', (39, 43)) ('SDHx related', 'Gene', (39, 51)) ('tumors', 'Disease', (31, 37)) ('tumors', 'Phenotype', 'HP:0002664', (31, 37)) ('associations', 'Interaction', (9, 21)) ('tumors', 'Disease', 'MESH:D009369', (31, 37)) 65912 23933153 SDHC gene mutations are associated with head and neck paragangliomas. ('paragangliomas', 'Phenotype', 'HP:0002668', (54, 68)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (40, 68)) ('associated', 'Reg', (24, 34)) ('SDHC', 'Gene', (0, 4)) ('SDHC', 'Gene', '6391', (0, 4)) ('head and neck paragangliomas', 'Disease', 'MESH:D006258', (40, 68)) ('gliomas', 'Phenotype', 'HP:0009733', (61, 68)) ('mutations', 'Var', (10, 19)) ('paraganglioma', 'Phenotype', 'HP:0002668', (54, 67)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (49, 68)) 65916 23933153 SDHD gene mutations predispose patients to development of head and neck paragangliomas. ('neck paragangliomas', 'Phenotype', 'HP:0002864', (67, 86)) ('paraganglioma', 'Phenotype', 'HP:0002668', (72, 85)) ('paragangliomas', 'Phenotype', 'HP:0002668', (72, 86)) ('SDHD', 'Gene', '6392', (0, 4)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (58, 86)) ('patients', 'Species', '9606', (31, 39)) ('predispose', 'Reg', (20, 30)) ('mutations', 'Var', (10, 19)) ('SDHD', 'Gene', (0, 4)) ('head and neck paragangliomas', 'Disease', 'MESH:D006258', (58, 86)) ('gliomas', 'Phenotype', 'HP:0009733', (79, 86)) 65920 23933153 Interestingly, SDHD mutations exhibit maternal imprinting resulting in disease only with paternal transmission. ('SDHD', 'Gene', (15, 19)) ('SDHD', 'Gene', '6392', (15, 19)) ('resulting in', 'Reg', (58, 70)) ('disease', 'Disease', (71, 78)) ('mutations', 'Var', (20, 29)) 65922 23933153 Mutations in the SDHAF2 gene result in the rare autosomal dominant syndrome know as familial paraganglioma syndrome 2. ('autosomal dominant syndrome', 'Disease', (48, 75)) ('SDHAF2', 'Gene', (17, 23)) ('result in', 'Reg', (29, 38)) ('familial paraganglioma syndrome', 'Disease', (84, 115)) ('Mutations', 'Var', (0, 9)) ('paraganglioma', 'Phenotype', 'HP:0002668', (93, 106)) ('familial paraganglioma syndrome', 'Disease', 'MESH:D010235', (84, 115)) ('autosomal dominant syndrome', 'Disease', 'MESH:D030342', (48, 75)) ('SDHAF2', 'Gene', '54949', (17, 23)) 65923 23933153 These mutations are very rare but when they do occur they predispose individuals to the development of head and neck paragangliomas. ('gliomas', 'Phenotype', 'HP:0009733', (124, 131)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (112, 131)) ('head and neck paragangliomas', 'Disease', 'MESH:D006258', (103, 131)) ('paragangliomas', 'Phenotype', 'HP:0002668', (117, 131)) ('paraganglioma', 'Phenotype', 'HP:0002668', (117, 130)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (103, 131)) ('predispose', 'Reg', (58, 68)) ('mutations', 'Var', (6, 15)) 65925 23933153 There currently is no indication that SDHAF2 mutations predispose metastatic disease. ('SDHAF2', 'Gene', '54949', (38, 44)) ('mutations', 'Var', (45, 54)) ('SDHAF2', 'Gene', (38, 44)) ('predispose', 'Reg', (55, 65)) ('metastatic disease', 'Disease', (66, 84)) 65930 23933153 Given the recent discovery of TMEM127 mutations predisposing to the development of pheochromocytomas/paragangliomas more large studies are needed to elucidate the clinical presentation of pheochromocytoma/paraganglioma associated TMEM127 mutations. ('gliomas', 'Phenotype', 'HP:0009733', (108, 115)) ('TMEM127', 'Gene', '55654', (230, 237)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (188, 218)) ('pheochromocytomas/paragangliomas', 'Disease', (83, 115)) ('TMEM127', 'Gene', (30, 37)) ('TMEM127', 'Gene', '55654', (30, 37)) ('paragangliomas', 'Phenotype', 'HP:0002668', (101, 115)) ('paraganglioma', 'Phenotype', 'HP:0002668', (101, 114)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (83, 99)) ('paraganglioma', 'Phenotype', 'HP:0002668', (205, 218)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (188, 204)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (83, 100)) ('mutations', 'Var', (38, 47)) ('TMEM127', 'Gene', (230, 237)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (83, 115)) ('pheochromocytoma/paraganglioma', 'Disease', (188, 218)) 65931 23933153 The current literature suggests TMEM127 mutations predispose to metanephrine producing adrenal pheochromocytomas in middle-aged individuals (around 40 years of life). ('adrenal pheochromocytomas', 'Disease', (87, 112)) ('TMEM127', 'Gene', (32, 39)) ('TMEM127', 'Gene', '55654', (32, 39)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (87, 111)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (95, 111)) ('mutations', 'Var', (40, 49)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (95, 112)) ('metanephrine', 'Disease', (64, 76)) ('predispose', 'Reg', (50, 60)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (87, 112)) ('metanephrine', 'Chemical', 'MESH:D008676', (64, 76)) ('adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (87, 112)) 65933 23933153 reported mutations in the TMEM-127 gene in seven families, 16 patients, with pheochromocytoma. ('TMEM-127', 'Gene', '55654', (26, 34)) ('mutations', 'Var', (9, 18)) ('pheochromocytoma', 'Disease', (77, 93)) ('patients', 'Species', '9606', (62, 70)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (77, 93)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (77, 93)) ('TMEM-127', 'Gene', (26, 34)) 65935 23933153 Following the discovery of a link between TMEM127 mutations and pheochromocytoma several other investigators reported the presence TMEM127 mutations in pheochromocytoma patients. ('pheochromocytoma', 'Disease', (152, 168)) ('patients', 'Species', '9606', (169, 177)) ('TMEM127', 'Gene', '55654', (42, 49)) ('mutations', 'Var', (50, 59)) ('pheochromocytoma', 'Disease', (64, 80)) ('TMEM127', 'Gene', (131, 138)) ('mutations', 'Var', (139, 148)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (152, 168)) ('TMEM127', 'Gene', '55654', (131, 138)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (152, 168)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (64, 80)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (64, 80)) ('TMEM127', 'Gene', (42, 49)) 65937 23933153 A study by Neumann et al., however, reported the presence of TMEM127 mutations in a patient with head and neck paragangliomas and another patient with an adrenal pheochromocytoma and an extra-adrenal paraganglioma. ('presence', 'Reg', (49, 57)) ('extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (186, 213)) ('paraganglioma', 'Phenotype', 'HP:0002668', (111, 124)) ('paragangliomas', 'Phenotype', 'HP:0002668', (111, 125)) ('gliomas', 'Phenotype', 'HP:0009733', (118, 125)) ('mutations', 'Var', (69, 78)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (162, 178)) ('extra-adrenal paraganglioma', 'Disease', (186, 213)) ('head and neck paragangliomas', 'Disease', 'MESH:D006258', (97, 125)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (154, 178)) ('TMEM127', 'Gene', (61, 68)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (154, 178)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (97, 125)) ('patient', 'Species', '9606', (84, 91)) ('adrenal pheochromocytoma', 'Disease', (154, 178)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (106, 125)) ('patient', 'Species', '9606', (138, 145)) ('TMEM127', 'Gene', '55654', (61, 68)) ('paraganglioma', 'Phenotype', 'HP:0002668', (200, 213)) 65938 23933153 Very little malignancy with TMEM127 mutations has been reported. ('TMEM127', 'Gene', '55654', (28, 35)) ('mutations', 'Var', (36, 45)) ('malignancy', 'Disease', 'MESH:D009369', (12, 22)) ('malignancy', 'Disease', (12, 22)) ('TMEM127', 'Gene', (28, 35)) 65941 23933153 Mutation of MAX results in increased cellular proliferation and has been associated with development of pheochromocytomas. ('increased', 'PosReg', (27, 36)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (104, 121)) ('cellular proliferation', 'CPA', (37, 59)) ('Mutation', 'Var', (0, 8)) ('MAX', 'Gene', (12, 15)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (104, 121)) ('associated with', 'Reg', (73, 88)) ('pheochromocytomas', 'Disease', (104, 121)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (104, 120)) 65943 23933153 Clinically, MAX mutations appear to be most commonly associated with adrenal pheochromocytomas and paternal transmission of MAX mutations has been suggested. ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (69, 93)) ('mutations', 'Var', (16, 25)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (77, 93)) ('MAX', 'Gene', (12, 15)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (77, 94)) ('associated', 'Reg', (53, 63)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (69, 94)) ('adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (69, 94)) ('adrenal pheochromocytomas', 'Disease', (69, 94)) 65944 23933153 study, that presented the link between MAX mutations and pheochromocytoma for the first time, reported the presence of MAX mutations in 12 patients with adrenal pheochromocytomas (8 bilateral). ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (153, 178)) ('patients', 'Species', '9606', (139, 147)) ('adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (153, 178)) ('pheochromocytoma', 'Disease', (57, 73)) ('adrenal pheochromocytomas', 'Disease', (153, 178)) ('presence', 'Reg', (107, 115)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (57, 73)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (161, 178)) ('pheochromocytoma', 'Disease', (161, 177)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (57, 73)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (161, 177)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (153, 177)) ('MAX', 'Gene', (119, 122)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (161, 177)) ('mutations', 'Var', (123, 132)) 65945 23933153 presented clinical data for 19 patients found to have MAX mutations and reported all presented with adrenal pheochromocytomas at a mean age of 34 years; 13 had bilateral or multiple adrenal tumors, 3 patients had an additional extra-adrenal sympathetic paraganglioma, and 2 patients eventually developed metastatic disease. ('mutations', 'Var', (58, 67)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (108, 125)) ('tumor', 'Phenotype', 'HP:0002664', (190, 195)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (100, 125)) ('adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (100, 125)) ('paraganglioma', 'Phenotype', 'HP:0002668', (253, 266)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (108, 124)) ('patients', 'Species', '9606', (274, 282)) ('multiple adrenal tumors', 'Disease', 'MESH:D000310', (173, 196)) ('multiple adrenal tumors', 'Disease', (173, 196)) ('extra-adrenal sympathetic paraganglioma', 'Disease', (227, 266)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (100, 124)) ('extra-adrenal sympathetic paraganglioma', 'Disease', 'MESH:D010236', (227, 266)) ('MAX', 'Gene', (54, 57)) ('adrenal pheochromocytomas', 'Disease', (100, 125)) ('presented with', 'Reg', (85, 99)) ('patients', 'Species', '9606', (200, 208)) ('patients', 'Species', '9606', (31, 39)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (182, 195)) ('tumors', 'Phenotype', 'HP:0002664', (190, 196)) 65946 23933153 Overall these tumors may be more frequently metastatic than other hereditary pheochromocytomas/paragangliomas, except those with SDHB/SDHD mutations. ('hereditary pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (66, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (95, 108)) ('mutations', 'Var', (139, 148)) ('SDHB', 'Gene', '6390', (129, 133)) ('SDHB', 'Gene', (129, 133)) ('tumors', 'Disease', (14, 20)) ('tumors', 'Phenotype', 'HP:0002664', (14, 20)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (77, 93)) ('metastatic', 'CPA', (44, 54)) ('hereditary pheochromocytomas/paragangliomas', 'Disease', (66, 109)) ('SDHD', 'Gene', (134, 138)) ('SDHD', 'Gene', '6392', (134, 138)) ('tumors', 'Disease', 'MESH:D009369', (14, 20)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (77, 94)) ('gliomas', 'Phenotype', 'HP:0009733', (102, 109)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) ('paragangliomas', 'Phenotype', 'HP:0002668', (95, 109)) 65949 23933153 Based on these studies, MAX mutations appear to predispose to development of adrenal pheochromocytomas between 30 and 40 years of age with a mixed noradrenergic and adrenergic biochemical phenotype. ('MAX', 'Gene', (24, 27)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (77, 102)) ('adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (77, 102)) ('adrenal pheochromocytomas', 'Disease', (77, 102)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (85, 102)) ('predispose to', 'Reg', (48, 61)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (85, 101)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (77, 101)) ('mutations', 'Var', (28, 37)) 65950 23933153 The association between PHD2 and HRAS mutations with pheochromocytoma/paraganglioma have only been described in a limited number of patients thus far. ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (53, 83)) ('PHD2', 'Gene', '54583', (24, 28)) ('HRAS', 'Gene', '3265', (33, 37)) ('paraganglioma', 'Phenotype', 'HP:0002668', (70, 83)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (53, 69)) ('HRAS', 'Gene', (33, 37)) ('PHD2', 'Gene', (24, 28)) ('pheochromocytoma/paraganglioma', 'Disease', (53, 83)) ('mutations', 'Var', (38, 47)) ('patients', 'Species', '9606', (132, 140)) 65952 23933153 described a patient with erythrocytosis and abdominal paragangliomas who was found to harbor a mutation in the PHD2 gene. ('PHD2', 'Gene', '54583', (111, 115)) ('paragangliomas', 'Phenotype', 'HP:0002668', (54, 68)) ('abdominal paragangliomas', 'Disease', 'MESH:D010235', (44, 68)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (25, 39)) ('erythrocytosis', 'Disease', 'MESH:D011086', (25, 39)) ('erythrocytosis', 'Disease', (25, 39)) ('abdominal paragangliomas', 'Disease', (44, 68)) ('gliomas', 'Phenotype', 'HP:0009733', (61, 68)) ('patient', 'Species', '9606', (12, 19)) ('paraganglioma', 'Phenotype', 'HP:0002668', (54, 67)) ('PHD2', 'Gene', (111, 115)) ('mutation', 'Var', (95, 103)) 65955 23933153 Genetic mutations of NF1 and RET are known to affect RAS signaling and are associated with the development of pheochromocytoma/paraganglioma but a mutation to RAS itself predisposing to the development of these tumors was only recently described. ('tumors', 'Disease', 'MESH:D009369', (211, 217)) ('RET', 'Gene', (29, 32)) ('RAS signaling', 'MPA', (53, 66)) ('pheochromocytoma/paraganglioma', 'Disease', (110, 140)) ('tumors', 'Phenotype', 'HP:0002664', (211, 217)) ('mutations', 'Var', (8, 17)) ('affect', 'Reg', (46, 52)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (110, 140)) ('associated', 'Reg', (75, 85)) ('paraganglioma', 'Phenotype', 'HP:0002668', (127, 140)) ('NF1', 'Gene', (21, 24)) ('tumor', 'Phenotype', 'HP:0002664', (211, 216)) ('RET', 'Gene', '5979', (29, 32)) ('tumors', 'Disease', (211, 217)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (110, 126)) 65956 23933153 very recently described the presence of H-RAS mutations in a series of 4 male patients, 3 presenting with pheochromocytoma and 1 with an abdominal paraganglioma. ('abdominal paraganglioma', 'Disease', (137, 160)) ('paraganglioma', 'Phenotype', 'HP:0002668', (147, 160)) ('mutations', 'Var', (46, 55)) ('H-RAS', 'Gene', '3265', (40, 45)) ('presence', 'Reg', (28, 36)) ('patients', 'Species', '9606', (78, 86)) ('pheochromocytoma', 'Disease', (106, 122)) ('H-RAS', 'Gene', (40, 45)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (106, 122)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (137, 160)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (106, 122)) 65958 23933153 The discovery of this mutation presents a further link between RAS proteins and the development of pheochromocytoma/paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (116, 129)) ('link', 'Reg', (50, 54)) ('mutation', 'Var', (22, 30)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (99, 129)) ('RAS proteins', 'Protein', (63, 75)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (99, 115)) ('pheochromocytoma/paraganglioma', 'Disease', (99, 129)) 65964 23933153 demonstrated that HIF1alpha deficiency stimulates cellular proliferation as opposed to hypoxic growth arrest. ('stimulates', 'PosReg', (39, 49)) ('hypoxic growth arrest', 'Disease', 'MESH:D006323', (87, 108)) ('deficiency', 'Var', (28, 38)) ('cellular proliferation', 'CPA', (50, 72)) ('HIF1alpha', 'Gene', (18, 27)) ('growth arrest', 'Phenotype', 'HP:0001510', (95, 108)) ('HIF1alpha', 'Gene', '3091', (18, 27)) ('hypoxic growth arrest', 'Disease', (87, 108)) 65965 23933153 Recently, gain-of-function HIF2alpha mutations were discovered in several patients with paraganglioma and associated polycythemia and in vivo and in vitro studies have been performed to support the oncogenic role HIF2alpha in pheochromocytoma/paraganglioma. ('paraganglioma', 'Disease', (243, 256)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (226, 256)) ('polycythemia', 'Disease', (117, 129)) ('paraganglioma', 'Disease', 'MESH:D010235', (243, 256)) ('polycythemia', 'Disease', 'MESH:D011086', (117, 129)) ('HIF2alpha', 'Gene', '2034', (213, 222)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (226, 242)) ('HIF2alpha', 'Gene', (27, 36)) ('paraganglioma', 'Phenotype', 'HP:0002668', (243, 256)) ('paraganglioma', 'Disease', (88, 101)) ('patients', 'Species', '9606', (74, 82)) ('paraganglioma', 'Disease', 'MESH:D010235', (88, 101)) ('mutations', 'Var', (37, 46)) ('gain-of-function', 'PosReg', (10, 26)) ('polycythemia', 'Phenotype', 'HP:0001901', (117, 129)) ('pheochromocytoma/paraganglioma', 'Disease', (226, 256)) ('HIF2alpha', 'Gene', '2034', (27, 36)) ('HIF2alpha', 'Gene', (213, 222)) ('paraganglioma', 'Phenotype', 'HP:0002668', (88, 101)) 65966 23933153 Several studies have recently been published describing the clinical presentation of paragangliomas developed in the setting of gain-of-function HIF2alpha mutations. ('paragangliomas', 'Disease', (85, 99)) ('paragangliomas', 'Disease', 'MESH:D010235', (85, 99)) ('paragangliomas', 'Phenotype', 'HP:0002668', (85, 99)) ('paraganglioma', 'Phenotype', 'HP:0002668', (85, 98)) ('mutations', 'Var', (155, 164)) ('HIF2alpha', 'Gene', (145, 154)) ('gliomas', 'Phenotype', 'HP:0009733', (92, 99)) ('gain-of-function', 'PosReg', (128, 144)) ('HIF2alpha', 'Gene', '2034', (145, 154)) 65969 23933153 described a case of a 24-year-old female who presented with an adrenal pheochromocytoma and was found to have a somatic HIF2alpha mutation. ('HIF2alpha', 'Gene', '2034', (120, 129)) ('mutation', 'Var', (130, 138)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (63, 87)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (71, 87)) ('HIF2alpha', 'Gene', (120, 129)) ('adrenal pheochromocytoma', 'Disease', (63, 87)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (63, 87)) 65970 23933153 recently described a case of a 25-year-old female with polycythemia who presented with adrenal and extra-adrenal paragangliomas and was found to have a gain-of-function HIF2alpha mutation. ('gliomas', 'Phenotype', 'HP:0009733', (120, 127)) ('paragangliomas', 'Phenotype', 'HP:0002668', (113, 127)) ('HIF2alpha', 'Gene', (169, 178)) ('paraganglioma', 'Phenotype', 'HP:0002668', (113, 126)) ('mutation', 'Var', (179, 187)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (99, 127)) ('polycythemia', 'Disease', (55, 67)) ('polycythemia', 'Phenotype', 'HP:0001901', (55, 67)) ('HIF2alpha', 'Gene', '2034', (169, 178)) ('extra-adrenal paragangliomas', 'Disease', (99, 127)) ('polycythemia', 'Disease', 'MESH:D011086', (55, 67)) ('gain-of-function', 'PosReg', (152, 168)) 65971 23933153 recently described a case of a 35-year-old male with polycythemia who presented with an extra-adrenal paraganglioma progressing to metastatic disease with an associated HIF2alpha mutation. ('paraganglioma', 'Phenotype', 'HP:0002668', (102, 115)) ('HIF2alpha', 'Gene', (169, 178)) ('extra-adrenal paraganglioma', 'Disease', (88, 115)) ('polycythemia', 'Disease', 'MESH:D011086', (53, 65)) ('polycythemia', 'Phenotype', 'HP:0001901', (53, 65)) ('mutation', 'Var', (179, 187)) ('extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (88, 115)) ('HIF2alpha', 'Gene', '2034', (169, 178)) ('metastatic disease', 'Disease', (131, 149)) ('polycythemia', 'Disease', (53, 65)) 65972 23933153 recently described 7 patients with HIF2alpha mutations, 3 of whom presented with multiple paragangliomas and polycythemia, 1 of whom presented with multiple paragangliomas, 2 of whom presented with solitary pheochromocytomas, and 1 of whom presented with a solitary paraganglioma. ('polycythemia', 'Disease', (109, 121)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (148, 171)) ('presented with', 'Reg', (66, 80)) ('gliomas', 'Phenotype', 'HP:0009733', (97, 104)) ('polycythemia', 'Disease', 'MESH:D011086', (109, 121)) ('patients', 'Species', '9606', (21, 29)) ('paraganglioma', 'Phenotype', 'HP:0002668', (157, 170)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (207, 224)) ('paraganglioma', 'Disease', (266, 279)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (81, 104)) ('multiple paragangliomas', 'Disease', (148, 171)) ('paraganglioma', 'Disease', 'MESH:D010235', (266, 279)) ('gliomas', 'Phenotype', 'HP:0009733', (164, 171)) ('paraganglioma', 'Disease', (90, 103)) ('HIF2alpha', 'Gene', (35, 44)) ('paraganglioma', 'Disease', 'MESH:D010235', (90, 103)) ('paragangliomas', 'Phenotype', 'HP:0002668', (157, 171)) ('polycythemia', 'Phenotype', 'HP:0001901', (109, 121)) ('multiple paragangliomas', 'Disease', (81, 104)) ('paraganglioma', 'Phenotype', 'HP:0002668', (266, 279)) ('mutations', 'Var', (45, 54)) ('paraganglioma', 'Disease', (157, 170)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (207, 223)) ('HIF2alpha', 'Gene', '2034', (35, 44)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (207, 224)) ('paraganglioma', 'Disease', 'MESH:D010235', (157, 170)) ('paragangliomas', 'Phenotype', 'HP:0002668', (90, 104)) ('paraganglioma', 'Phenotype', 'HP:0002668', (90, 103)) ('pheochromocytomas', 'Disease', (207, 224)) 65973 23933153 These findings indicate that HIF2alpha mutations may be present in the absence of polycythemia. ('polycythemia', 'Disease', (82, 94)) ('HIF2alpha', 'Gene', (29, 38)) ('polycythemia', 'Phenotype', 'HP:0001901', (82, 94)) ('polycythemia', 'Disease', 'MESH:D011086', (82, 94)) ('mutations', 'Var', (39, 48)) ('HIF2alpha', 'Gene', '2034', (29, 38)) 65974 23933153 Based on the current findings presented in the literature HIF2alpha gain-of-function mutations appear to predispose to development of multiple extra-adrenal paragangliomas (multiple pheochromocytomas are much less common) and multiple duodenal somatostatinomas in females with polycythemia development either at birth or in early childhood. ('paraganglioma', 'Phenotype', 'HP:0002668', (157, 170)) ('somatostatinomas', 'Disease', (244, 260)) ('polycythemia', 'Disease', (277, 289)) ('multiple extra-adrenal paragangliomas', 'Disease', (134, 171)) ('multiple extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (134, 171)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (182, 199)) ('paragangliomas', 'Phenotype', 'HP:0002668', (157, 171)) ('pheochromocytomas', 'Disease', (182, 199)) ('gain-of-function', 'PosReg', (68, 84)) ('HIF2alpha', 'Gene', '2034', (58, 67)) ('polycythemia', 'Phenotype', 'HP:0001901', (277, 289)) ('mutations', 'Var', (85, 94)) ('polycythemia', 'Disease', 'MESH:D011086', (277, 289)) ('gliomas', 'Phenotype', 'HP:0009733', (164, 171)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (182, 198)) ('somatostatinomas', 'Disease', 'MESH:D013005', (244, 260)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (182, 199)) ('HIF2alpha', 'Gene', (58, 67)) 65975 23933153 The link between (pseudo) hypoxia and pheochromocytoma/paraganglioma has been long hypothesized but it was not until the discovery of the VHL mutation that a true association was made. ('pheochromocytoma/paraganglioma', 'Disease', (38, 68)) ('VHL', 'Gene', '7428', (138, 141)) ('hypoxia', 'Disease', 'MESH:D000860', (26, 33)) ('hypoxia', 'Disease', (26, 33)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (38, 68)) ('paraganglioma', 'Phenotype', 'HP:0002668', (55, 68)) ('mutation', 'Var', (142, 150)) ('VHL', 'Gene', (138, 141)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (38, 54)) 65983 23933153 Adrenal pheochromocytomas are more commonly associated with VHL, RET, NF1, TMEM127, or MAX gene mutations than with SDHx or HIF2alpha gene mutations. ('associated', 'Reg', (44, 54)) ('HIF2alpha', 'Gene', (124, 133)) ('RET', 'Gene', '5979', (65, 68)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (8, 24)) ('SDHx', 'Chemical', '-', (116, 120)) ('VHL', 'Gene', (60, 63)) ('Adrenal pheochromocytomas', 'Disease', (0, 25)) ('MAX', 'Gene', (87, 90)) ('Adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (0, 25)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (8, 25)) ('VHL', 'Gene', '7428', (60, 63)) ('TMEM127', 'Gene', (75, 82)) ('RET', 'Gene', (65, 68)) ('TMEM127', 'Gene', '55654', (75, 82)) ('Adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (0, 25)) ('HIF2alpha', 'Gene', '2034', (124, 133)) ('NF1', 'Gene', (70, 73)) ('mutations', 'Var', (96, 105)) 65984 23933153 Extra-adrenal sympathetic paragangliomas are most commonly associated with SDHB mutations. ('paraganglioma', 'Phenotype', 'HP:0002668', (26, 39)) ('paragangliomas', 'Phenotype', 'HP:0002668', (26, 40)) ('Extra-adrenal sympathetic paragangliomas', 'Disease', 'MESH:D010236', (0, 40)) ('mutations', 'Var', (80, 89)) ('SDHB', 'Gene', '6390', (75, 79)) ('associated', 'Reg', (59, 69)) ('gliomas', 'Phenotype', 'HP:0009733', (33, 40)) ('SDHB', 'Gene', (75, 79)) ('Extra-adrenal sympathetic paragangliomas', 'Disease', (0, 40)) 65985 23933153 Head and neck paragangliomas are associated with SDHD (often multiple), SDHC, SDHAF2, and SDHB gene mutations. ('mutations', 'Var', (100, 109)) ('SDHB', 'Gene', '6390', (90, 94)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (9, 28)) ('SDHB', 'Gene', (90, 94)) ('SDHC', 'Gene', '6391', (72, 76)) ('paraganglioma', 'Phenotype', 'HP:0002668', (14, 27)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (9, 28)) ('SDHAF2', 'Gene', (78, 84)) ('associated', 'Reg', (33, 43)) ('paragangliomas', 'Phenotype', 'HP:0002668', (14, 28)) ('SDHC', 'Gene', (72, 76)) ('SDHD', 'Gene', '6392', (49, 53)) ('SDHAF2', 'Gene', '54949', (78, 84)) ('gliomas', 'Phenotype', 'HP:0009733', (21, 28)) ('neck paragangliomas', 'Disease', (9, 28)) ('SDHD', 'Gene', (49, 53)) 65986 23933153 SDHAF2 mutations should be considered in patients with head and neck paragangliomas, who have a strong family history of head and neck tumors or present at a young age and are negative for other SDHx mutations. ('head and neck tumors', 'Phenotype', 'HP:0012288', (121, 141)) ('head and neck paragangliomas', 'Disease', 'MESH:D006258', (55, 83)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (55, 83)) ('SDHAF2', 'Gene', '54949', (0, 6)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('SDHAF2', 'Gene', (0, 6)) ('neck tumors', 'Disease', 'MESH:D006258', (130, 141)) ('paraganglioma', 'Phenotype', 'HP:0002668', (69, 82)) ('gliomas', 'Phenotype', 'HP:0009733', (76, 83)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (64, 83)) ('neck tumors', 'Disease', (130, 141)) ('patients', 'Species', '9606', (41, 49)) ('SDHx', 'Chemical', '-', (195, 199)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('paragangliomas', 'Phenotype', 'HP:0002668', (69, 83)) ('head and neck tumor', 'Phenotype', 'HP:0012288', (121, 140)) ('mutations', 'Var', (7, 16)) 65989 23933153 To date, there is no large-scale study on biochemical phenotypes that includes TMEM127, MAX, and HIF2alpha mutations or SDHB-related adrenal pheochromocytomas. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (141, 157)) ('mutations', 'Var', (107, 116)) ('TMEM127', 'Gene', '55654', (79, 86)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (141, 158)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (133, 158)) ('SDHB-', 'Gene', (120, 125)) ('adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (133, 158)) ('adrenal pheochromocytomas', 'Disease', (133, 158)) ('HIF2alpha', 'Gene', '2034', (97, 106)) ('SDHB-', 'Gene', '6390', (120, 125)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (133, 157)) ('TMEM127', 'Gene', (79, 86)) ('HIF2alpha', 'Gene', (97, 106)) 65991 23933153 If these tumors are found without any syndromic or familial presentation we recommend that: metastatic tumors to be tested for SDHB mutations; multiple abdominal paragangliomas should be first tested for the presence of SDHD mutations; multiple/bilateral adrenal pheochromocytomas should be tested for TMEM127 mutations; and multiple paragangliomas associated with other neuroendocrine tumors, currently with somatostatinoma, should first be tested for HIF2alpha mutations. ('TMEM127', 'Gene', (302, 309)) ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (255, 279)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (371, 392)) ('HIF2alpha', 'Gene', '2034', (453, 462)) ('bilateral adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (245, 280)) ('tumors', 'Disease', (103, 109)) ('paragangliomas', 'Phenotype', 'HP:0002668', (334, 348)) ('SDHB', 'Gene', (127, 131)) ('tumors', 'Disease', 'MESH:D009369', (9, 15)) ('paraganglioma', 'Phenotype', 'HP:0002668', (334, 347)) ('syndromic', 'Disease', (38, 47)) ('TMEM127', 'Gene', '55654', (302, 309)) ('mutations', 'Var', (310, 319)) ('bilateral adrenal pheochromocytomas', 'Disease', (245, 280)) ('gliomas', 'Phenotype', 'HP:0009733', (341, 348)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (263, 280)) ('neuroendocrine tumors', 'Disease', (371, 392)) ('tumors', 'Disease', 'MESH:D009369', (103, 109)) ('SDHD', 'Gene', '6392', (220, 224)) ('somatostatinoma', 'Disease', 'MESH:D013005', (409, 424)) ('tumors', 'Phenotype', 'HP:0002664', (386, 392)) ('abdominal paragangliomas', 'Disease', 'MESH:D010235', (152, 176)) ('somatostatinoma', 'Disease', (409, 424)) ('abdominal paragangliomas', 'Disease', (152, 176)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (325, 348)) ('tumors', 'Phenotype', 'HP:0002664', (9, 15)) ('paraganglioma', 'Phenotype', 'HP:0002668', (162, 175)) ('paragangliomas', 'Phenotype', 'HP:0002668', (162, 176)) ('tumor', 'Phenotype', 'HP:0002664', (386, 391)) ('HIF2alpha', 'Gene', (453, 462)) ('SDHD', 'Gene', (220, 224)) ('tumors', 'Disease', (386, 392)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (371, 392)) ('syndromic', 'Disease', 'MESH:D013577', (38, 47)) ('mutations', 'Var', (225, 234)) ('tumors', 'Phenotype', 'HP:0002664', (103, 109)) ('gliomas', 'Phenotype', 'HP:0009733', (169, 176)) ('SDHB', 'Gene', '6390', (127, 131)) ('mutations', 'Var', (132, 141)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (263, 279)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (255, 280)) ('multiple paragangliomas', 'Disease', (325, 348)) ('tumors', 'Disease', (9, 15)) ('tumors', 'Disease', 'MESH:D009369', (386, 392)) ('mutations', 'Var', (463, 472)) 65993 23933153 RET, NF1, and VHL-related pheochromocytomas/paragangliomas are associated with positive SDHB IHC while SDHx-related pheochromocytomas/paragangliomas are associated with negative SDHB staining (SDHD-related tumors can be weakly positive). ('SDHD', 'Gene', (193, 197)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (26, 58)) ('tumors', 'Phenotype', 'HP:0002664', (206, 212)) ('SDHB', 'Gene', (88, 92)) ('VHL', 'Gene', (14, 17)) ('paragangliomas', 'Phenotype', 'HP:0002668', (134, 148)) ('RET', 'Gene', '5979', (0, 3)) ('gliomas', 'Phenotype', 'HP:0009733', (141, 148)) ('tumor', 'Phenotype', 'HP:0002664', (206, 211)) ('paraganglioma', 'Phenotype', 'HP:0002668', (134, 147)) ('positive', 'Var', (79, 87)) ('tumors', 'Disease', (206, 212)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (26, 43)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (116, 132)) ('VHL', 'Gene', '7428', (14, 17)) ('pheochromocytomas/paragangliomas', 'Disease', (116, 148)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (26, 42)) ('RET', 'Gene', (0, 3)) ('tumors', 'Disease', 'MESH:D009369', (206, 212)) ('SDHB', 'Gene', '6390', (178, 182)) ('gliomas', 'Phenotype', 'HP:0009733', (51, 58)) ('pheochromocytomas/paragangliomas', 'Disease', (26, 58)) ('SDHD', 'Gene', '6392', (193, 197)) ('paraganglioma', 'Phenotype', 'HP:0002668', (44, 57)) ('paragangliomas', 'Phenotype', 'HP:0002668', (44, 58)) ('SDHB', 'Gene', '6390', (88, 92)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (116, 148)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (116, 133)) ('SDHx', 'Chemical', '-', (103, 107)) ('SDHB', 'Gene', (178, 182)) 65994 23933153 Negative IHC for SDHA has been correlated with the presence of an SDHA mutation. ('SDHA', 'Gene', (17, 21)) ('mutation', 'Var', (71, 79)) ('SDHA', 'Gene', (66, 70)) ('SDHA', 'Gene', '6389', (17, 21)) ('SDHA', 'Gene', '6389', (66, 70)) 65996 23933153 As previously mentioned, many of the genetic mutations discussed are associated with tumors and findings other than pheochromocytoma/paraganglioma that need to be followed. ('paraganglioma', 'Phenotype', 'HP:0002668', (133, 146)) ('mutations', 'Var', (45, 54)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (116, 146)) ('genetic mutations', 'Var', (37, 54)) ('tumors', 'Disease', 'MESH:D009369', (85, 91)) ('associated', 'Reg', (69, 79)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (116, 132)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('pheochromocytoma/paraganglioma', 'Disease', (116, 146)) ('tumors', 'Phenotype', 'HP:0002664', (85, 91)) ('tumors', 'Disease', (85, 91)) 65997 23933153 Prophylactic thyroidectomy, for example, is recommended for patients with specific RET mutations. ('patients', 'Species', '9606', (60, 68)) ('RET', 'Gene', (83, 86)) ('mutations', 'Var', (87, 96)) ('RET', 'Gene', '5979', (83, 86)) 65998 23933153 Patients with SDHB mutations should be followed closely by both biochemistry and serial imaging for development of metastatic disease, especially those who presented with their primary tumor at a young age. ('primary tumor', 'Disease', 'MESH:D009369', (177, 190)) ('mutations', 'Var', (19, 28)) ('Patients', 'Species', '9606', (0, 8)) ('primary tumor', 'Disease', (177, 190)) ('SDHB', 'Gene', '6390', (14, 18)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('metastatic disease', 'Disease', (115, 133)) ('SDHB', 'Gene', (14, 18)) 66129 22154086 For retroviral delivery and expression of luciferase in MTT cells, we first generated the construct pLLuc via replacement of EGFP with a luciferase gene between the BamH-1 and Not-1 sites of the retroviral vector pLEGFP. ('EGFP', 'Gene', (125, 129)) ('MTT', 'Chemical', 'MESH:C070243', (56, 59)) ('replacement', 'Var', (110, 121)) ('luciferase', 'Gene', (137, 147)) 66176 22154086 This was somewhat unexpected because the primary tumor from which MPC and MTT are derived arose in a Nf1 knockout mouse generated by insertion of a neomycin resistance gene in reverse orientation into the Nf1 gene and the original MPC line was intrinsically G418-resistant (JF Powers, unpublished). ('tumor', 'Disease', 'MESH:D009369', (49, 54)) ('insertion', 'Var', (133, 142)) ('Nf1', 'Gene', '18015', (101, 104)) ('MTT', 'Chemical', 'MESH:C070243', (74, 77)) ('Nf1', 'Gene', '18015', (205, 208)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('G418', 'Chemical', 'MESH:C010680', (258, 262)) ('tumor', 'Disease', (49, 54)) ('mouse', 'Species', '10090', (114, 119)) ('neomycin', 'Chemical', 'MESH:D009355', (148, 156)) ('Nf1', 'Gene', (101, 104)) ('Nf1', 'Gene', (205, 208)) 66284 33743242 In the present case, we succeeded in safely transecting the adrenal feeder arteries and dissecting the dorsal side of the tumor via a retroperitoneal laparoscopic approach. ('tumor', 'Disease', 'MESH:D009369', (122, 127)) ('tumor', 'Disease', (122, 127)) ('transecting', 'Var', (44, 55)) ('tumor', 'Phenotype', 'HP:0002664', (122, 127)) 66287 33743242 During surgery for large PPGLs producing a lot of catecholamines, direct manipulation of the tumor frequently precipitates a hypertensive crisis despite preoperative treatment with an alpha blocker. ('hypertensive crisis', 'Phenotype', 'HP:0100735', (125, 144)) ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('catecholamines', 'Chemical', 'MESH:D002395', (50, 64)) ('tumor', 'Disease', (93, 98)) ('hypertensive', 'Disease', 'MESH:D006973', (125, 137)) ('precipitates', 'Reg', (110, 122)) ('PPGLs', 'Var', (25, 30)) ('hypertensive', 'Disease', (125, 137)) ('PPGLs', 'Chemical', '-', (25, 30)) ('tumor', 'Disease', 'MESH:D009369', (93, 98)) 66305 33670168 For instance, alterations of VHL first identified in families with von Hippel-Lindau are present in >90% of cases of sporadic clear cell RCC. ('alterations', 'Var', (14, 25)) ('von Hippel-Lindau', 'Gene', '7428', (67, 84)) ('VHL', 'Gene', (29, 32)) ('VHL', 'Gene', '7428', (29, 32)) ('RCC', 'Phenotype', 'HP:0005584', (137, 140)) ('RCC', 'Disease', 'MESH:C538614', (137, 140)) ('RCC', 'Disease', (137, 140)) ('present', 'Reg', (89, 96)) ('von Hippel-Lindau', 'Gene', (67, 84)) 66306 33670168 Similarly, alterations in MET which were identified in patients with hereditary papillary renal carcinoma (HPRC) are also present in 17% of sporadic type 1 papillary RCCs, and 81% of these cases have altered MET status. ('alterations', 'Var', (11, 22)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (90, 105)) ('MET', 'Gene', (26, 29)) ('MET', 'Gene', (208, 211)) ('hereditary papillary renal carcinoma', 'Disease', 'MESH:C538614', (69, 105)) ('carcinoma', 'Phenotype', 'HP:0030731', (96, 105)) ('papillary renal carcinoma', 'Phenotype', 'HP:0006766', (80, 105)) ('RCC', 'Phenotype', 'HP:0005584', (166, 169)) ('papillary RCCs', 'Disease', 'MESH:D002291', (156, 170)) ('hereditary papillary renal carcinoma', 'Disease', (69, 105)) ('altered', 'Reg', (200, 207)) ('MET', 'Gene', '79811', (208, 211)) ('MET', 'Gene', '79811', (26, 29)) ('patients', 'Species', '9606', (55, 63)) ('papillary RCCs', 'Disease', (156, 170)) 66316 33670168 Patients with a germline VHL mutation have over 90% disease penetrance by the age of 65. ('mutation', 'Var', (29, 37)) ('age', 'Gene', (78, 81)) ('germline', 'Var', (16, 24)) ('age', 'Gene', '5973', (78, 81)) ('Patients', 'Species', '9606', (0, 8)) ('VHL', 'Gene', (25, 28)) ('disease penetrance', 'CPA', (52, 70)) ('VHL', 'Gene', '7428', (25, 28)) 66319 33670168 Deletion and frameshift alterations have a higher propensity for development of clear cell RCC but low risk for pheochromocytoma. ('men', 'Species', '9606', (72, 75)) ('RCC', 'Disease', 'MESH:C538614', (91, 94)) ('RCC', 'Disease', (91, 94)) ('RCC', 'Phenotype', 'HP:0005584', (91, 94)) ('pheochromocytoma', 'Disease', (112, 128)) ('frameshift alterations', 'Var', (13, 35)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (112, 128)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (112, 128)) ('Deletion', 'Var', (0, 8)) 66320 33670168 In contrast, missense alterations have a higher propensity for development of pheochromocytoma. ('pheochromocytoma', 'Disease', (78, 94)) ('men', 'Species', '9606', (70, 73)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (78, 94)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (78, 94)) ('missense alterations', 'Var', (13, 33)) 66331 33670168 Alteration of the MET gene (located on chromosome 7q31) was ultimately identified as the cause of this condition initially based on the study of families with high prevalence of papillary RCC without any identifiable changes on chromosome 3p. ('cause', 'Reg', (89, 94)) ('papillary RCC', 'Disease', 'MESH:C538614', (178, 191)) ('Alteration', 'Var', (0, 10)) ('papillary RCC', 'Disease', (178, 191)) ('MET', 'Gene', '79811', (18, 21)) ('MET', 'Gene', (18, 21)) ('RCC', 'Phenotype', 'HP:0005584', (188, 191)) 66332 33670168 Missense mutations are specific to the tyrosine kinase domain of the MET gene and act as a proto-oncogene. ('MET', 'Gene', (69, 72)) ('MET', 'Gene', '79811', (69, 72)) ('Missense mutations', 'Var', (0, 18)) 66334 33670168 In affected individuals, the activating mutation allows inappropriate upregulation of the numerous downstream regulators by the MET kinase without its interaction with HGF. ('mutation', 'Var', (40, 48)) ('HGF', 'Gene', (168, 171)) ('upregulation', 'PosReg', (70, 82)) ('MET', 'Gene', '79811', (128, 131)) ('activating', 'Reg', (29, 39)) ('MET', 'Gene', (128, 131)) ('HGF', 'Gene', '3082', (168, 171)) 66346 33670168 Just recently added to the World Health Organization classification of RCC, Succinate dehydrogenase (SDH)-deficient RCC is associated with a germline mutation in the genes encoding any of the SDH subunits (SDHA, SDHB, SDHC, SDHD). ('SDH', 'Gene', '6390', (224, 227)) ('SDHC', 'Gene', '6391', (218, 222)) ('Succinate dehydrogenase', 'Gene', '6390', (76, 99)) ('SDHB', 'Gene', '6390', (212, 216)) ('SDHD', 'Gene', (224, 228)) ('RCC', 'Phenotype', 'HP:0005584', (116, 119)) ('RCC', 'Disease', (116, 119)) ('SDH', 'Gene', '6390', (206, 209)) ('SDH', 'Gene', (218, 221)) ('SDHA', 'Gene', (206, 210)) ('SDH', 'Gene', (192, 195)) ('SDH', 'Gene', (224, 227)) ('SDHB', 'Gene', (212, 216)) ('RCC', 'Disease', 'MESH:C538614', (116, 119)) ('SDHA', 'Gene', '6389', (206, 210)) ('SDHC', 'Gene', (218, 222)) ('SDH', 'Gene', '6390', (212, 215)) ('deficient RCC', 'Disease', (106, 119)) ('RCC', 'Disease', (71, 74)) ('SDH', 'Gene', '6390', (101, 104)) ('RCC', 'Phenotype', 'HP:0005584', (71, 74)) ('SDH', 'Gene', (206, 209)) ('deficient RCC', 'Disease', 'MESH:C538614', (106, 119)) ('associated', 'Reg', (123, 133)) ('SDH', 'Gene', (212, 215)) ('mutation in', 'Var', (150, 161)) ('RCC', 'Disease', 'MESH:C538614', (71, 74)) ('Succinate dehydrogenase', 'Gene', (76, 99)) ('SDH', 'Gene', '6390', (218, 221)) ('SDHD', 'Gene', '6392', (224, 228)) ('SDH', 'Gene', '6390', (192, 195)) ('SDH', 'Gene', (101, 104)) 66349 33670168 Originally described in 2004, mutations in the SDHB subunit are the most frequently seen in SDH-deficient RCC. ('SDHB', 'Gene', '6390', (47, 51)) ('SDH-deficient RCC', 'Disease', (92, 109)) ('SDHB', 'Gene', (47, 51)) ('SDH-deficient RCC', 'Disease', 'MESH:C538614', (92, 109)) ('seen', 'Reg', (84, 88)) ('mutations', 'Var', (30, 39)) ('RCC', 'Phenotype', 'HP:0005584', (106, 109)) 66352 33670168 First implicated in the development of malignant mesothelioma and uveal melanoma, germline BRCA1-associated protein-1 (BAP1) mutations are a relatively recently discovered tumor predisposition syndrome. ('uveal melanoma', 'Phenotype', 'HP:0007716', (66, 80)) ('mutations', 'Var', (125, 134)) ('uveal melanoma', 'Disease', (66, 80)) ('uveal melanoma', 'Disease', 'MESH:C536494', (66, 80)) ('melanoma', 'Phenotype', 'HP:0002861', (72, 80)) ('tumor', 'Phenotype', 'HP:0002664', (172, 177)) ('men', 'Species', '9606', (31, 34)) ('malignant mesothelioma', 'Phenotype', 'HP:0100001', (39, 61)) ('BRCA1-associated protein-1', 'Gene', (91, 117)) ('tumor', 'Disease', (172, 177)) ('malignant mesothelioma', 'Disease', (39, 61)) ('BAP1', 'Gene', '8314', (119, 123)) ('BRCA1-associated protein-1', 'Gene', '8314', (91, 117)) ('malignant mesothelioma', 'Disease', 'MESH:C562839', (39, 61)) ('tumor', 'Disease', 'MESH:D009369', (172, 177)) ('BAP1', 'Gene', (119, 123)) 66357 33670168 Examination of families with a BAP1 mutation and RCC showed the development of early onset tumors, many of which were fast growing and with higher Fuhrman grade on pathologic analysis. ('tumors', 'Disease', (91, 97)) ('RCC', 'Disease', (49, 52)) ('tumors', 'Disease', 'MESH:D009369', (91, 97)) ('tumors', 'Phenotype', 'HP:0002664', (91, 97)) ('BAP1', 'Gene', '8314', (31, 35)) ('men', 'Species', '9606', (71, 74)) ('BAP1', 'Gene', (31, 35)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('RCC', 'Phenotype', 'HP:0005584', (49, 52)) ('mutation', 'Var', (36, 44)) ('RCC', 'Disease', 'MESH:C538614', (49, 52)) 66362 33670168 It is inherited in an autosomal dominant fashion with mutations mapped in the 1990s to the TSC1 and TSC2 genes located on chromosome 9q34 and 16p13, respectively. ('TSC1', 'Gene', '7248', (91, 95)) ('TSC2', 'Gene', (100, 104)) ('mutations', 'Var', (54, 63)) ('TSC1', 'Gene', (91, 95)) ('TSC2', 'Gene', '7249', (100, 104)) 66363 33670168 TSC1 and TSC2 are tumor suppressor genes that follows Knudson's two-hit model with development of the manifestations occurring with loss of the 2nd hit mutation/inactivation. ('tumor', 'Disease', (18, 23)) ('men', 'Species', '9606', (90, 93)) ('loss', 'Var', (132, 136)) ('TSC2', 'Gene', '7249', (9, 13)) ('TSC1', 'Gene', '7248', (0, 4)) ('mutation/inactivation', 'Var', (152, 173)) ('TSC1', 'Gene', (0, 4)) ('TSC2', 'Gene', (9, 13)) ('tumor', 'Disease', 'MESH:D009369', (18, 23)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 66379 33670168 For localized disease, decades of experience managing these patients have made it possible to tailor the approach based on the specific germline mutation as a direct result of the biological nature of the renal tumors. ('renal tumors', 'Disease', 'MESH:D007674', (205, 217)) ('localized disease', 'Disease', (4, 21)) ('renal tumors', 'Disease', (205, 217)) ('localized disease', 'Disease', 'MESH:D012594', (4, 21)) ('patients', 'Species', '9606', (60, 68)) ('germline mutation', 'Var', (136, 153)) ('tumor', 'Phenotype', 'HP:0002664', (211, 216)) ('renal tumors', 'Phenotype', 'HP:0009726', (205, 217)) ('tumors', 'Phenotype', 'HP:0002664', (211, 217)) 66380 33670168 Biologic aggressiveness is associated with each specific germline mutation. ('aggressiveness', 'Phenotype', 'HP:0000718', (9, 23)) ('germline', 'Var', (57, 65)) ('associated', 'Reg', (27, 37)) ('aggressiveness', 'Disease', 'MESH:D001523', (9, 23)) ('aggressiveness', 'Disease', (9, 23)) 66410 33670168 Given the aggressiveness of the tumors seen in certain germline mutations (specifically HLRCC and SDH-deficient tumors), we routinely perform a local regional lymph node dissection at time of surgery in these settings for larger or more complex solid tumors, even in the setting of preoperatively normal lymph nodes. ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('tumors', 'Disease', (32, 38)) ('germline mutations', 'Var', (55, 73)) ('tumors', 'Disease', 'MESH:D009369', (112, 118)) ('RCC', 'Disease', (90, 93)) ('RCC', 'Phenotype', 'HP:0005584', (90, 93)) ('aggressiveness of the tumors', 'Disease', 'MESH:D001523', (10, 38)) ('tumors', 'Phenotype', 'HP:0002664', (251, 257)) ('SDH-deficient tumors', 'Disease', 'MESH:D009369', (98, 118)) ('tumor', 'Phenotype', 'HP:0002664', (251, 256)) ('aggressiveness', 'Phenotype', 'HP:0000718', (10, 24)) ('tumors', 'Disease', 'MESH:D009369', (32, 38)) ('RCC', 'Disease', 'MESH:C538614', (90, 93)) ('tumors', 'Disease', (251, 257)) ('aggressiveness of the tumors', 'Disease', (10, 38)) ('tumors', 'Phenotype', 'HP:0002664', (112, 118)) ('SDH-deficient tumors', 'Disease', (98, 118)) ('tumors', 'Disease', 'MESH:D009369', (251, 257)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('tumors', 'Phenotype', 'HP:0002664', (32, 38)) ('tumors', 'Disease', (112, 118)) 66610 33194923 Finally, clevidipine is an ultrashort-acting IV CCB with a rapid onset, which causes arteriolar vasodilation and has an added advantage of a simplified dose titration due to rapid inactivation by tissue and blood esterase but is absolutely contraindicated in patients with egg and soy allergies as well as in those with lipid disorders. ('clevidipine', 'Var', (9, 20)) ('patients', 'Species', '9606', (259, 267)) ('soy allergies', 'Phenotype', 'HP:0003193', (281, 294)) ('arteriolar vasodilation', 'MPA', (85, 108)) ('clevidipine', 'Chemical', 'MESH:C118563', (9, 20)) ('egg', 'Disease', (273, 276)) ('lipid disorders', 'Disease', (320, 335)) ('lipid disorders', 'Disease', 'MESH:D052439', (320, 335)) ('egg and soy allergies', 'Phenotype', 'HP:0410328', (273, 294)) ('allergies', 'Phenotype', 'HP:0012393', (285, 294)) 66616 33194923 Hydralazine lacks the negative inotropic effect and causes reflex tachycardia by activation of the RAAS pathway, which can negate its antihypertensive effects. ('Hydralazine', 'Var', (0, 11)) ('RAAS pathway', 'Pathway', (99, 111)) ('Hydralazine', 'Chemical', 'MESH:D006830', (0, 11)) ('hypertensive', 'Disease', 'MESH:D006973', (138, 150)) ('reflex tachycardia', 'Disease', (59, 77)) ('tachycardia', 'Phenotype', 'HP:0001649', (66, 77)) ('reflex tachycardia', 'Disease', 'MESH:D013610', (59, 77)) ('hypertensive', 'Disease', (138, 150)) ('negative inotropic', 'MPA', (22, 40)) ('causes', 'Reg', (52, 58)) ('lacks', 'NegReg', (12, 17)) 66618 33194923 With activity at the dopamine 1 receptor and alpha-adrenoreceptors, fenoldopam causes increases in renal blood flow and urinary flow, in addition to natriuresis. ('fenoldopam', 'Chemical', 'MESH:D018818', (68, 78)) ('natriuresis', 'MPA', (149, 160)) ('increases', 'PosReg', (86, 95)) ('urinary flow', 'MPA', (120, 132)) ('renal blood flow', 'MPA', (99, 115)) ('dopamine 1 receptor', 'Protein', (21, 40)) ('fenoldopam', 'Var', (68, 78)) ('alpha-adrenoreceptors', 'Protein', (45, 66)) ('dopamine', 'Chemical', 'MESH:D004298', (21, 29)) 66623 33194923 Similarly, alpha adrenergic blockers such as phenoxybenzamine and doxazosin are specifically used in catecholamine-induced hypertension such as paragangliomas and pheochromocytoma. ('paragangliomas', 'Phenotype', 'HP:0002668', (144, 158)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (163, 179)) ('doxazosin', 'Chemical', 'MESH:D017292', (66, 75)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (45, 61)) ('paragangliomas and pheochromocytoma', 'Disease', 'MESH:D010673', (144, 179)) ('paraganglioma', 'Phenotype', 'HP:0002668', (144, 157)) ('hypertension', 'Disease', (123, 135)) ('catecholamine', 'Chemical', 'MESH:D002395', (101, 114)) ('hypertension', 'Phenotype', 'HP:0000822', (123, 135)) ('phenoxybenzamine', 'Var', (45, 61)) ('hypertension', 'Disease', 'MESH:D006973', (123, 135)) 66630 33194923 In addition, clonidine is another orally used antihypertensive drug that activates alpha 2-adrenergic receptors and decreases central sympathetic tone, thereby causing vasodilation. ('central sympathetic tone', 'MPA', (126, 150)) ('alpha 2-adrenergic receptors', 'Protein', (83, 111)) ('vasodilation', 'MPA', (168, 180)) ('hypertensive', 'Disease', 'MESH:D006973', (50, 62)) ('causing', 'Reg', (160, 167)) ('hypertensive', 'Disease', (50, 62)) ('clonidine', 'Var', (13, 22)) ('clonidine', 'Chemical', 'MESH:D003000', (13, 22)) ('decreases', 'NegReg', (116, 125)) ('activates', 'PosReg', (73, 82)) 66657 33194923 Additionally, it is important to evaluate for the presence of Von-Hippel Lindau disease (VHL), neurofibromatosis-1(NF-1), and rearranged during transfection (RET) in cases of suspected pheochromocytomas and succinate dehydrogenase complex subunits (SDHD, SDHB, SDHC) gene mutations in paragangliomas. ('mutations', 'Var', (272, 281)) ('SDHD', 'Gene', (249, 253)) ('Von-Hippel Lindau disease', 'Disease', (62, 87)) ('SDHC', 'Gene', (261, 265)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (95, 112)) ('neurofibromatosis-1(NF-1)', 'Disease', 'MESH:C537392', (95, 120)) ('RET', 'Gene', '5979', (158, 161)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (185, 202)) ('VHL', 'Disease', (89, 92)) ('paragangliomas', 'Disease', 'MESH:D010235', (285, 299)) ('paraganglioma', 'Phenotype', 'HP:0002668', (285, 298)) ('paragangliomas', 'Phenotype', 'HP:0002668', (285, 299)) ('RET', 'Gene', (158, 161)) ('SDHB', 'Gene', '6390', (255, 259)) ('SDHC', 'Gene', '6391', (261, 265)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (185, 201)) ('VHL', 'Disease', 'MESH:D006623', (89, 92)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (185, 202)) ('SDHD', 'Gene', '6392', (249, 253)) ('pheochromocytomas', 'Disease', (185, 202)) ('paragangliomas', 'Disease', (285, 299)) ('SDHB', 'Gene', (255, 259)) ('Von-Hippel Lindau disease', 'Disease', 'MESH:D006623', (62, 87)) 66670 33194923 Liddle syndrome is a consequence of gain-of-function mutation of the gene encoding the three subunit channel proteins (alpha, beta, and gamma) of aldosterone-dependent epithelial sodium channel (ENaC) in the collecting ducts. ('gain-of-function', 'PosReg', (36, 52)) ('Liddle syndrome', 'Disease', 'MESH:D056929', (0, 15)) ('mutation', 'Var', (53, 61)) ('sodium', 'Chemical', 'MESH:D012964', (179, 185)) ('Liddle syndrome', 'Disease', (0, 15)) ('aldosterone', 'Chemical', 'MESH:D000450', (146, 157)) 66671 33194923 These mutations inhibit degradation of ENaC and excessive sodium absorption culminating to hypertension, hypokalemia, metabolic alkalosis, and a low plasma renin and aldosterone. ('inhibit', 'NegReg', (16, 23)) ('hypokalemia', 'Disease', (105, 116)) ('hypertension', 'Disease', (91, 103)) ('renin', 'Gene', '5972', (156, 161)) ('metabolic alkalosis', 'Disease', (118, 137)) ('aldosterone', 'Chemical', 'MESH:D000450', (166, 177)) ('hypertension', 'Phenotype', 'HP:0000822', (91, 103)) ('sodium', 'Chemical', 'MESH:D012964', (58, 64)) ('hypokalemia', 'Phenotype', 'HP:0002900', (105, 116)) ('mutations', 'Var', (6, 15)) ('metabolic alkalosis', 'Phenotype', 'HP:0200114', (118, 137)) ('excessive', 'PosReg', (48, 57)) ('hypokalemia', 'Disease', 'MESH:D007008', (105, 116)) ('excessive sodium', 'Phenotype', 'HP:0003228', (48, 64)) ('alkalosis', 'Phenotype', 'HP:0001948', (128, 137)) ('sodium absorption', 'MPA', (58, 75)) ('low plasma renin', 'Phenotype', 'HP:0003351', (145, 161)) ('metabolic alkalosis', 'Disease', 'MESH:D000471', (118, 137)) ('hypertension', 'Disease', 'MESH:D006973', (91, 103)) ('ENaC', 'Protein', (39, 43)) ('low', 'NegReg', (145, 148)) ('renin', 'Gene', (156, 161)) ('degradation', 'MPA', (24, 35)) 66734 32109495 Germline alterations in at least 15 genes are implicated in pheochromocytoma and are found in upwards of 40% of cases. ('implicated', 'Reg', (46, 56)) ('pheochromocytoma', 'Disease', (60, 76)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (60, 76)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (60, 76)) ('Germline alterations', 'Var', (0, 20)) 66735 32109495 Even among patients without clinical evidence of a hereditable pheochromocytoma syndrome, 25% are found to be positive for an associated germline mutation. ('pheochromocytoma syndrome', 'Disease', 'MESH:D010673', (63, 88)) ('pheochromocytoma syndrome', 'Disease', (63, 88)) ('germline mutation', 'Var', (137, 154)) ('positive', 'Reg', (110, 118)) ('patients', 'Species', '9606', (11, 19)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (63, 79)) 66864 32435362 As expected, GW7647 robustly stimulated CPT1A expression (Figure 3), whereas compounds 3a-e, 10e, and 13e induced only a weak CPT1A mRNA expression. ('GW7647', 'Chemical', 'MESH:C453899', (13, 19)) ('stimulated', 'PosReg', (29, 39)) ('GW7647', 'Var', (13, 19)) ('CPT1A', 'Gene', '1374', (126, 131)) ('CPT1A', 'Gene', '1374', (40, 45)) ('13e', 'Chemical', '-', (102, 105)) ('expression', 'MPA', (46, 56)) ('CPT1A', 'Gene', (126, 131)) ('CPT1A', 'Gene', (40, 45)) 66865 32435362 Notably, the combinations of GW7647 with 3a-e, 10e, or 13e were able to significantly repress CPT1A expression, supporting the antagonistic behavior of the novel compounds on PPARalpha (Figure 3). ('combinations', 'Interaction', (13, 25)) ('repress', 'NegReg', (86, 93)) ('PPARalpha', 'Gene', '5465', (175, 184)) ('CPT1A', 'Gene', (94, 99)) ('expression', 'MPA', (100, 110)) ('PPARalpha', 'Gene', (175, 184)) ('GW7647', 'Var', (29, 35)) ('GW7647', 'Chemical', 'MESH:C453899', (29, 35)) ('13e', 'Chemical', '-', (55, 58)) ('CPT1A', 'Gene', '1374', (94, 99)) 66875 32435362 In particular, 3c, 3d, and 10e drastically and significantly decreased paraganglioma cell line viability, as shown by concentration-response curves (Figure 5, panels A, B, C) and cytotoxic concentration (CC50) values in the low micromolar range (Figure 5, panel D). ('10e', 'Var', (27, 30)) ('paraganglioma', 'Phenotype', 'HP:0002668', (71, 84)) ('decreased paraganglioma', 'Disease', 'MESH:D010235', (61, 84)) ('decreased paraganglioma', 'Disease', (61, 84)) 66880 32435362 In this structure GW6471, bearing an amide headgroup, does not interact with Y464 and pushes the H12 to assume an inactive and less structured conformation. ('inactive', 'MPA', (114, 122)) ('Y464', 'Chemical', '-', (77, 81)) ('amide', 'Chemical', 'MESH:D000577', (37, 42)) ('GW6471', 'Var', (18, 24)) ('GW6471', 'Chemical', 'MESH:C449302', (18, 24)) ('H12', 'Protein', (97, 100)) 66887 32435362 The phenyldiazenyl group was surrounded by sulfur-containing residues such as C275, C276, M355, and M330, forming profitable sulfur-arene interactions. ('C275', 'Var', (78, 82)) ('sulfur', 'Chemical', 'MESH:D013455', (43, 49)) ('M330', 'Var', (100, 104)) ('arene', 'Chemical', '-', (132, 137)) ('interactions', 'Interaction', (138, 150)) ('C276', 'Var', (84, 88)) ('sulfur', 'Chemical', 'MESH:D013455', (125, 131)) ('M355', 'Var', (90, 94)) ('phenyldiazenyl', 'Chemical', '-', (4, 18)) 66888 32435362 By looking at the binding mode of compound 10e (Figures 6B and S3, Supporting Information), it was observed that an H-bond was also formed, through its carbonyl oxygen, with the OH group of the Y314 side chain, whereas the aromatic ring of the benzenesulfonamide moiety made hydrophobic interactions with V444 and F273. ('F273', 'Var', (314, 318)) ('oxygen', 'Chemical', 'MESH:D010100', (161, 167)) ('V444', 'Chemical', '-', (305, 309)) ('benzenesulfonamide', 'Chemical', 'MESH:C038198', (244, 262)) ('F273', 'Chemical', '-', (314, 318)) ('Y314', 'Chemical', '-', (194, 198)) ('V444', 'Var', (305, 309)) 66890 32435362 The phenylbenzamide moiety, besides the hydrophobic contacts observed for 3a, formed two additional H-bonds with the T279 OH group and the NH backbone of A333 on the beta-sheet. ('T279 OH', 'Var', (117, 124)) ('phenylbenzamide', 'Chemical', '-', (4, 19)) ('H-bonds', 'Interaction', (100, 107)) 66892 32435362 Noteworthy, the benzenesulfonamide headgroup of 3a and 10e projected into an area that is usually occupied by the side chain of Y464 in PPARalpha LBD bound to agonist ligands, such as GW409544 (Supporting Information, Figure S4B). ('GW409544', 'Chemical', 'MESH:C442829', (184, 192)) ('benzenesulfonamide', 'Chemical', 'MESH:C038198', (16, 34)) ('PPARalpha', 'Gene', '5465', (136, 145)) ('Y464', 'Var', (128, 132)) ('PPARalpha', 'Gene', (136, 145)) ('Y464', 'Chemical', '-', (128, 132)) ('GW409544', 'Var', (184, 192)) ('bound', 'Interaction', (150, 155)) 66897 32435362 In fact, the insertion of the more hydrophilic nitro group (3d), or the bulkier methylamide group (3e), caused a slight decrease in potency; for derivatives 3f and 3g, a further drop in PPARalpha antagonistic activity was observed, produced by the impaired accommodation of an additional aromatic ring into arm I of PPARalpha. ('PPARalpha', 'Gene', (316, 325)) ('PPARalpha', 'Gene', (186, 195)) ('drop', 'NegReg', (178, 182)) ('antagonistic activity', 'MPA', (196, 217)) ('impaired accommodation', 'Phenotype', 'HP:0030801', (248, 270)) ('methylamide', 'Chemical', '-', (80, 91)) ('decrease', 'NegReg', (120, 128)) ('insertion', 'Var', (13, 22)) ('accommodation of an additional aromatic ring', 'MPA', (257, 301)) ('PPARalpha', 'Gene', '5465', (316, 325)) ('PPARalpha', 'Gene', '5465', (186, 195)) ('potency', 'MPA', (132, 139)) ('nitro', 'Chemical', '-', (47, 52)) ('impaired', 'NegReg', (248, 256)) 66899 32435362 Derivatives 4a-d, bearing the amide headgroup and phenyldiazenyl tail group, turned out to be less active because of the loss of profitable H-bonds and pi-pi stacking interactions with Y314 observed in docking experiments. ('Y314', 'Chemical', '-', (185, 189)) ('loss', 'NegReg', (121, 125)) ('H-bonds', 'Protein', (140, 147)) ('phenyldiazenyl', 'Chemical', '-', (50, 64)) ('Y314', 'Var', (185, 189)) ('amide', 'Chemical', 'MESH:D000577', (30, 35)) ('pi-pi stacking interactions', 'CPA', (152, 179)) ('-d', 'Chemical', 'MESH:D003903', (14, 16)) 66900 32435362 On comparing the docked pose of 3a and 4c (Figure S5B, Supporting Information), it is clear that, despite a similar positioning of the phenyldiazenyl tail, the amide moiety was not properly oriented to engage an H bond with Y314. ('Y314', 'Chemical', '-', (224, 228)) ('phenyldiazenyl', 'Chemical', '-', (135, 149)) ('engage', 'Interaction', (202, 208)) ('H bond', 'Interaction', (212, 218)) ('amide', 'Chemical', 'MESH:D000577', (160, 165)) ('Y314', 'Var', (224, 228)) 66902 32435362 From the docked pose of 10e, it can be argued that the primary amide (10a) was no longer able to form the hydrophobic interactions with residues V444 and F273, whereas both aliphatic (10b) and aromatic groups (10c and 10d) could not be placed at an optimal distance to favorably interact with such residues. ('V444', 'Chemical', '-', (145, 149)) ('F273', 'Var', (154, 158)) ('V444', 'Var', (145, 149)) ('amide', 'Chemical', 'MESH:D000577', (63, 68)) ('F273', 'Chemical', '-', (154, 158)) ('hydrophobic interactions', 'MPA', (106, 130)) 66903 32435362 As shown in Figure S5C, the phenylbenzamide tails of both 10e and 10b displayed the same orientation; however, the butyl amide headgroup of 10b could not properly interact with Y314, but instead was oriented toward Q277. ('Y314', 'Var', (177, 181)) ('butyl amide', 'Chemical', '-', (115, 126)) ('phenylbenzamide', 'Chemical', '-', (28, 43)) ('Y314', 'Chemical', '-', (177, 181)) ('Q277', 'Var', (215, 219)) 66905 32435362 However, introduction of phenyl and benzyl substituents (13c and 13d) on the amide headgroup introduced steric restrictions, making it more difficult for the ligands to interact with Y314 and with the hydrophobic residues A441, V444, and F273. ('F273', 'Var', (238, 242)) ('A441', 'Var', (222, 226)) ('Y314', 'Chemical', '-', (183, 187)) ('A441', 'Chemical', '-', (222, 226)) ('V444', 'Chemical', '-', (228, 232)) ('amide', 'Chemical', 'MESH:D000577', (77, 82)) ('F273', 'Chemical', '-', (238, 242)) ('interact', 'Interaction', (169, 177)) ('V444', 'Var', (228, 232)) ('Y314', 'Var', (183, 187)) 66946 30808127 Echocardiography was performed in 46 patients (41.8%) due to cardiovascular symptoms such as chest pain or dyspnea (n = 8), abnormal ECG (n = 14) or cardiovascular risk factors (n = 8), and for preoperative screening (n = 16). ('dyspnea', 'Disease', (107, 114)) ('chest pain', 'Disease', 'MESH:D002637', (93, 103)) ('chest pain', 'Disease', (93, 103)) ('patients', 'Species', '9606', (37, 45)) ('dyspnea', 'Disease', 'MESH:D004417', (107, 114)) ('abnormal', 'Var', (124, 132)) ('abnormal ECG', 'Phenotype', 'HP:0003115', (124, 136)) ('chest pain', 'Phenotype', 'HP:0100749', (93, 103)) ('pain', 'Phenotype', 'HP:0012531', (99, 103)) ('cardiovascular symptoms', 'Phenotype', 'HP:0001626', (61, 84)) ('dyspnea', 'Phenotype', 'HP:0002094', (107, 114)) ('cardiovascular symptoms', 'Disease', 'MESH:D020821', (61, 84)) ('ECG', 'Chemical', '-', (133, 136)) ('cardiovascular symptoms', 'Disease', (61, 84)) 66980 30808127 Out of 54 patients with a medical history of hypertension, 34 (63.0%) discontinued antihypertensive medication after the resection of the PPGLs (eight in the Group 1 and 20 in the Group 2). ('discontinued', 'NegReg', (70, 82)) ('hypertensive', 'Disease', 'MESH:D006973', (87, 99)) ('antihypertensive medication', 'Phenotype', 'HP:0000822', (83, 110)) ('resection', 'Var', (121, 130)) ('hypertension', 'Phenotype', 'HP:0000822', (45, 57)) ('hypertensive', 'Disease', (87, 99)) ('hypertension', 'Disease', 'MESH:D006973', (45, 57)) ('PPGLs', 'Chemical', '-', (138, 143)) ('hypertension', 'Disease', (45, 57)) ('patients', 'Species', '9606', (10, 18)) ('PPGLs', 'Gene', (138, 143)) 66986 30808127 Catecholamines can induce myocardial damage by microvascular dysfunction of the coronary arteries, multivessel epicardial spasm, impaired fatty acid metabolism, myocarditis and catecholamine-mediated myocardial dysfunction. ('myocardial damage', 'Disease', 'MESH:D009202', (26, 43)) ('fatty acid', 'Chemical', 'MESH:D005227', (138, 148)) ('catecholamine', 'Chemical', 'MESH:D002395', (177, 190)) ('myocarditis', 'Disease', (161, 172)) ('impaired', 'Var', (129, 137)) ('myocarditis', 'Phenotype', 'HP:0012819', (161, 172)) ('microvascular', 'CPA', (47, 60)) ('Catecholamines', 'Chemical', 'MESH:D002395', (0, 14)) ('myocardial dysfunction', 'Disease', 'MESH:D009202', (200, 222)) ('myocardial damage', 'Disease', (26, 43)) ('myocardial dysfunction', 'Disease', (200, 222)) ('induce', 'Reg', (19, 25)) ('epicardial spasm', 'Disease', 'MESH:D013035', (111, 127)) ('myocarditis', 'Disease', 'MESH:D009205', (161, 172)) ('epicardial spasm', 'Disease', (111, 127)) 67121 31511074 They are characterised by germline mutations of genes that lead to the early onset of distinctive tumour subtypes in specific organs. ('tumour', 'Disease', 'MESH:D009369', (98, 104)) ('tumour', 'Disease', (98, 104)) ('tumour', 'Phenotype', 'HP:0002664', (98, 104)) ('mutations', 'Var', (35, 44)) 67142 31511074 In the American NLST trial, annual low-dose chest CT in long-term smokers reduced lung cancer mortality by 20% compared to annual chest radiography. ('low-dose', 'Var', (35, 43)) ('lung cancer', 'Phenotype', 'HP:0100526', (82, 93)) ('lung cancer', 'Disease', (82, 93)) ('cancer', 'Phenotype', 'HP:0002664', (87, 93)) ('lung cancer', 'Disease', 'MESH:D008175', (82, 93)) ('reduced', 'NegReg', (74, 81)) 67328 31511074 These tumours also show amplification of MDM2 and CDK4 positivity on FISH testing, whereas lipomas do not. ('lipomas', 'Disease', (91, 98)) ('CDK4', 'Gene', (50, 54)) ('lipomas', 'Disease', 'MESH:D008067', (91, 98)) ('tumour', 'Phenotype', 'HP:0002664', (6, 12)) ('positivity', 'Var', (55, 65)) ('tumours', 'Phenotype', 'HP:0002664', (6, 13)) ('MDM', 'Disease', (41, 44)) ('lipomas', 'Phenotype', 'HP:0012032', (91, 98)) ('amplification', 'Var', (24, 37)) ('tumours', 'Disease', 'MESH:D009369', (6, 13)) ('lipomas', 'Phenotype', 'HP:0001012', (91, 98)) ('MDM', 'Disease', 'MESH:D007645', (41, 44)) ('lipoma', 'Phenotype', 'HP:0012032', (91, 97)) ('tumours', 'Disease', (6, 13)) 67380 31511074 Advance DWI and PWI may further improve accuracy of MRI in discriminating various subtype of kidney cancers and has shown potential in discriminating chromophobe RCC from other subtypes. ('chromophobe RCC', 'Disease', (150, 165)) ('cancer', 'Phenotype', 'HP:0002664', (100, 106)) ('kidney cancer', 'Phenotype', 'HP:0009726', (93, 106)) ('PWI', 'Var', (16, 19)) ('kidney cancers', 'Phenotype', 'HP:0009726', (93, 107)) ('kidney cancers', 'Disease', 'MESH:D007680', (93, 107)) ('chromophobe RCC', 'Disease', 'MESH:D002292', (150, 165)) ('kidney cancers', 'Disease', (93, 107)) ('improve', 'PosReg', (32, 39)) ('cancers', 'Phenotype', 'HP:0002664', (100, 107)) 67446 31511074 More than 66% of the responders indicated that the benefits of AI and machine learning are much bigger or slightly bigger than the risks for cancer imaging. ('cancer', 'Phenotype', 'HP:0002664', (141, 147)) ('cancer', 'Disease', (141, 147)) ('machine learning', 'Var', (70, 86)) ('cancer', 'Disease', 'MESH:D009369', (141, 147)) 67695 31511074 2000;20(6):1585-603 High-quality evidence shows that MRI in biopsy-naive men can reduce the number of men who need prostate biopsy and can reduce the number of diagnoses of clinically insignificant cancers that are unlikely to cause harm. ('men', 'Species', '9606', (73, 76)) ('reduce', 'NegReg', (81, 87)) ('cancers', 'Phenotype', 'HP:0002664', (198, 205)) ('cancers', 'Disease', (198, 205)) ('cancers', 'Disease', 'MESH:D009369', (198, 205)) ('cancer', 'Phenotype', 'HP:0002664', (198, 204)) ('reduce', 'NegReg', (139, 145)) ('men', 'Species', '9606', (102, 105)) ('MRI', 'Var', (53, 56)) 67719 31511074 The detection of bone metastases in patients with high-risk prostate cancer: 99mTc-MDP Planar bone scintigraphy, single- and multi-field-of-view SPECT, 18F-fluoride PET, and 18F-fluoride PET/CT. ('prostate cancer', 'Phenotype', 'HP:0012125', (60, 75)) ('MDP', 'Chemical', 'MESH:D000119', (83, 86)) ('patients', 'Species', '9606', (36, 44)) ('prostate cancer', 'Disease', (60, 75)) ('bone metastases', 'Disease', (17, 32)) ('bone metastases', 'Disease', 'MESH:D009362', (17, 32)) ('18F-fluoride', 'Chemical', '-', (152, 164)) ('cancer', 'Phenotype', 'HP:0002664', (69, 75)) ('18F-fluoride PET/CT', 'Var', (174, 193)) ('prostate cancer', 'Disease', 'MESH:D011471', (60, 75)) ('18F-fluoride', 'Chemical', '-', (174, 186)) ('Tc', 'Chemical', 'MESH:D013667', (80, 82)) 67795 31511074 131I-MIBG--a new agent in diagnosis and treatment of pheochromocytoma. ('men', 'Species', '9606', (45, 48)) ('131I-MIBG--', 'Var', (0, 11)) ('pheochromocytoma', 'Disease', (53, 69)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (53, 69)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (53, 69)) ('131I-MIBG', 'Chemical', '-', (0, 9)) 67807 31511074 PET imaging with a [68Ga]gallium-labelled PSMA ligand for the diagnosis of prostate cancer: biodistribution in humans and first evaluation of tumour lesions. ('prostate cancer', 'Disease', (75, 90)) ('PSMA', 'Gene', '2346', (42, 46)) ('[68Ga', 'Var', (19, 24)) ('gallium', 'Chemical', 'MESH:D005708', (25, 32)) ('tumour', 'Phenotype', 'HP:0002664', (142, 148)) ('cancer', 'Phenotype', 'HP:0002664', (84, 90)) ('Ga', 'Chemical', 'MESH:D005708', (22, 24)) ('PSMA', 'Gene', (42, 46)) ('prostate cancer', 'Disease', 'MESH:D011471', (75, 90)) ('tumour lesions', 'Disease', (142, 156)) ('prostate cancer', 'Phenotype', 'HP:0012125', (75, 90)) ('tumour lesions', 'Disease', 'MESH:D001932', (142, 156)) ('humans', 'Species', '9606', (111, 117)) 67823 31511074 For both metastatic and myeloma bone disease, deficiencies in the ability of serum biomarkers to reflect disease status particularly in later stages of the disease strengthens the need for quantitative whole body imaging. ('myeloma bone disease', 'Disease', 'MESH:D009101', (24, 44)) ('deficiencies', 'Var', (46, 58)) ('myeloma bone disease', 'Disease', (24, 44)) ('metastatic', 'Disease', (9, 19)) 67932 31511074 Probing molecular changes will aid not only cancer diagnosis, but also provide tumour grading, based on gene-expression analysis and imaging measurements of cell proliferation and changes in metabolism; staging, based on imaging of metastatic spread and elevation of protein biomarkers; and the detection of therapeutic response, using serial molecular imaging measurements or monitoring of serum markers. ('changes', 'Var', (18, 25)) ('changes', 'Reg', (180, 187)) ('men', 'Species', '9606', (368, 371)) ('cell proliferation', 'CPA', (157, 175)) ('metastatic spread', 'CPA', (232, 249)) ('cancer', 'Disease', (44, 50)) ('cancer', 'Disease', 'MESH:D009369', (44, 50)) ('men', 'Species', '9606', (148, 151)) ('tumour', 'Phenotype', 'HP:0002664', (79, 85)) ('metabolism', 'MPA', (191, 201)) ('tumour', 'Disease', 'MESH:D009369', (79, 85)) ('protein biomarkers', 'MPA', (267, 285)) ('tumour', 'Disease', (79, 85)) ('cancer', 'Phenotype', 'HP:0002664', (44, 50)) 68085 31511074 Methods: Retrospective analysis of 388 prostate cancer patients enrolled in five prospective studies (NCT02940262, NCT03368547, NCT03042312, UCLA IRB#17-001336, NCT03515577). ('NCT02940262', 'Var', (102, 113)) ('cancer', 'Phenotype', 'HP:0002664', (48, 54)) ('prostate cancer', 'Disease', (39, 54)) ('NCT03368547', 'Var', (115, 126)) ('prostate cancer', 'Disease', 'MESH:D011471', (39, 54)) ('patients', 'Species', '9606', (55, 63)) ('NCT03042312', 'Var', (128, 139)) ('prostate cancer', 'Phenotype', 'HP:0012125', (39, 54)) 68152 31511074 In this study, we aim to study the value of b800/b0 in addition to ADC values. ('AD', 'Disease', 'MESH:D000544', (67, 69)) ('AD', 'Disease', (67, 69)) ('b800/b0', 'Var', (44, 51)) 68158 31511074 Conclusion The b800/b0 ratio in diffusion weighted imaging could help to differentiate benign from malignant gallbladder lesions, and it may be more reliable than the ADC values in the quantitative assessment of the DWI. ('AD', 'Disease', 'MESH:D000544', (167, 169)) ('AD', 'Disease', (167, 169)) ('gallbladder lesions', 'Disease', (109, 128)) ('b800/b0', 'Var', (15, 22)) ('men', 'Species', '9606', (204, 207)) ('gallbladder lesions', 'Disease', 'MESH:D005705', (109, 128)) 68280 31511074 More recently, F18 FDG-PET/CT, imaging which has various oncological applications, has been recommended as an important complementary tool in the detection of bone metastases and evaluation of therapy response. ('men', 'Species', '9606', (126, 129)) ('men', 'Species', '9606', (97, 100)) ('bone metastases', 'Disease', 'MESH:D009362', (159, 174)) ('bone metastases', 'Disease', (159, 174)) ('FDG', 'Chemical', 'MESH:D019788', (19, 22)) ('F18', 'Var', (15, 18)) 68305 31511074 While diagnostic certainty was comparable, ratings for lesion conspicuity were significantly higher for the combination of CI/IO (4(3-5)) compared to CI only (3(3-4);p<0.05). ('higher', 'PosReg', (93, 99)) ('CI/IO', 'Var', (123, 128)) ('IO', 'Chemical', '-', (126, 128)) 68355 31511074 The study was performed in 404 patients with NPC who had undergone MR imaging with a standard protocol which included T1W, T2W- fat-suppressed (FS), contrast-enhanced-T1W (CE-T1W) and CE-T1W-FS sequences. ('NPC', 'Disease', 'MESH:D052556', (45, 48)) ('T2W-', 'Var', (123, 127)) ('NPC', 'Disease', (45, 48)) ('T1W', 'Var', (118, 121)) ('patients', 'Species', '9606', (31, 39)) 68407 31511074 Distant metastases free survival was significantly better in patients with ypT0-2 (versus ypT3-4, P=0.0028) and ypN0 (versus ypN1-2, P=0.0040). ('metastases', 'Disease', (8, 18)) ('ypT0-2', 'Var', (75, 81)) ('patients', 'Species', '9606', (61, 69)) ('metastases', 'Disease', 'MESH:D009362', (8, 18)) ('ypN0', 'Var', (112, 116)) ('better', 'PosReg', (51, 57)) 68415 31511074 The values of ADCbm were significantly higher (p<0.01) in women, 477.3+-17.7 mum/s (95% IC), than in men, 426.3+-14.0 mum/s (95% IC). ('higher', 'PosReg', (39, 45)) ('men', 'Species', '9606', (101, 104)) ('477.3+-17.7', 'Var', (65, 76)) ('women', 'Species', '9606', (58, 63)) ('men', 'Species', '9606', (60, 63)) ('AD', 'Disease', 'MESH:D000544', (14, 16)) ('AD', 'Disease', (14, 16)) 68431 31511074 Methods: Single-site retrospective analysis of histologically confirmed FH-deficient renal cancer, or patients with renal cancer and Germline FH mutation. ('renal cancer', 'Disease', (116, 128)) ('FH-deficient renal cancer', 'Disease', (72, 97)) ('renal cancer', 'Phenotype', 'HP:0009726', (85, 97)) ('FH', 'Gene', '2271', (72, 74)) ('renal cancer', 'Phenotype', 'HP:0009726', (116, 128)) ('FH-deficient renal cancer', 'Disease', 'MESH:D007680', (72, 97)) ('Germline', 'Var', (133, 141)) ('patients', 'Species', '9606', (102, 110)) ('renal cancer', 'Disease', 'MESH:D007680', (85, 97)) ('renal cancer', 'Disease', 'MESH:D007680', (116, 128)) ('FH', 'Gene', '2271', (142, 144)) ('cancer', 'Phenotype', 'HP:0002664', (91, 97)) ('cancer', 'Phenotype', 'HP:0002664', (122, 128)) 68443 30893643 Driver mutations were used to categorize patients accordingly to three different molecular systems: two subgroups (SDHB mutated or wild type), three subgroups (pseudohypoxia, kinase signaling or Wnt/unknown) and four subgroups (tricarboxylic acid cycle, VHL/EPAS1, kinase signaling or Wnt/unknown). ('kinase signaling', 'MPA', (175, 191)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (228, 246)) ('VHL', 'Gene', '7428', (254, 257)) ('SDHB', 'Gene', '6390', (115, 119)) ('EPAS1', 'Gene', '2034', (258, 263)) ('tricarboxylic acid cycle', 'MPA', (228, 252)) ('kinase signaling', 'MPA', (265, 281)) ('SDHB', 'Gene', (115, 119)) ('EPAS1', 'Gene', (258, 263)) ('patients', 'Species', '9606', (41, 49)) ('VHL', 'Gene', (254, 257)) ('mutated', 'Var', (120, 127)) 68445 30893643 Multivariate models for association with metastasis showed correlation with SDHB mutation (OR 5.68 [95% CI 1.79-18.06]) as well as norepinephrine (OR 3.01 [95% CI 1.02-8.79]) and dopamine (OR 6.39 [95% CI 1.62-25.24]) but not to PPGL location. ('SDHB', 'Gene', '6390', (76, 80)) ('dopamine', 'Chemical', 'MESH:D004298', (179, 187)) ('SDHB', 'Gene', (76, 80)) ('PPGL', 'Chemical', '-', (229, 233)) ('correlation', 'Interaction', (59, 70)) ('mutation', 'Var', (81, 89)) ('norepinephrine', 'MPA', (131, 145)) ('norepinephrine', 'Chemical', 'MESH:D009638', (131, 145)) ('dopamine', 'MPA', (179, 187)) ('metastasis', 'CPA', (41, 51)) 68455 30893643 It has also been proposed that PPGL with somatic abberations in genes releated to telomere maintenance (inactivation of ATRX or transcriptional activation of TERT) as well as chromatin maintenance (SETD2) could have more aggressive features and may thus be disease modifiers. ('ATRX', 'Gene', (120, 124)) ('transcriptional', 'MPA', (128, 143)) ('SETD2', 'Gene', (198, 203)) ('SETD2', 'Gene', '29072', (198, 203)) ('TERT', 'Gene', (158, 162)) ('ATRX', 'Gene', '546', (120, 124)) ('abberations', 'Var', (49, 60)) ('aggressive features', 'CPA', (221, 240)) ('TERT', 'Gene', '7015', (158, 162)) ('activation', 'PosReg', (144, 154)) ('PPGL', 'Chemical', '-', (31, 35)) 68457 30893643 Tumor location (PGL versus PCC), germline SDHB mutations (SDHB mutated versus SDHB wild type), ATRX mutation, TERT overexpression, catecholamine secretion (noradrenergic or dopaminergic versus adrenergic) and large size of the primary tumor have all been independently associated with metastasis. ('ATRX', 'Gene', (95, 99)) ('SDHB', 'Gene', (58, 62)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('tumor', 'Disease', 'MESH:D009369', (235, 240)) ('SDHB', 'Gene', '6390', (78, 82)) ('PCC', 'Gene', (27, 30)) ('ATRX', 'Gene', '546', (95, 99)) ('PCC', 'Gene', '1421', (27, 30)) ('associated', 'Reg', (269, 279)) ('tumor', 'Phenotype', 'HP:0002664', (235, 240)) ('mutations', 'Var', (47, 56)) ('catecholamine', 'Chemical', 'MESH:D002395', (131, 144)) ('SDHB', 'Gene', (78, 82)) ('SDHB', 'Gene', '6390', (58, 62)) ('SDHB', 'Gene', '6390', (42, 46)) ('metastasis', 'Disease', (285, 295)) ('catecholamine secretion', 'MPA', (131, 154)) ('mutation', 'Var', (100, 108)) ('TERT', 'Gene', (110, 114)) ('tumor', 'Disease', (235, 240)) ('TERT', 'Gene', '7015', (110, 114)) ('dopamine', 'Chemical', 'MESH:D004298', (173, 181)) ('SDHB', 'Gene', (42, 46)) 68459 30893643 Size of the primary tumor, gender, SDHB mutation, catecholamine profile, ATRX mutation and TERT overexpression are suggested to be prognostic factors for survival. ('mutation', 'Var', (40, 48)) ('catecholamine profile', 'MPA', (50, 71)) ('mutation', 'Var', (78, 86)) ('TERT', 'Gene', (91, 95)) ('SDHB', 'Gene', (35, 39)) ('catecholamine profile', 'Phenotype', 'HP:0003334', (50, 71)) ('ATRX', 'Gene', (73, 77)) ('tumor', 'Disease', 'MESH:D009369', (20, 25)) ('TERT', 'Gene', '7015', (91, 95)) ('catecholamine', 'Chemical', 'MESH:D002395', (50, 63)) ('tumor', 'Phenotype', 'HP:0002664', (20, 25)) ('ATRX', 'Gene', '546', (73, 77)) ('SDHB', 'Gene', '6390', (35, 39)) ('tumor', 'Disease', (20, 25)) 68461 30893643 We and others have proposed that the improved characterization of PPGL driver mutations provide additional information beyond the dichotomous categorization based on SDHB. ('SDHB', 'Gene', (166, 170)) ('mutations', 'Var', (78, 87)) ('PPGL', 'Chemical', '-', (66, 70)) ('SDHB', 'Gene', '6390', (166, 170)) ('PPGL', 'Gene', (66, 70)) 68470 30893643 With the TCGA publication as a starting point and taking into account the available literature, we selected three different systems for driver gene categorization: A 2-molecular subgroup system accordingly to SDHB mutation status: SDHB mutated or SDHB wild type. ('mutation', 'Var', (214, 222)) ('SDHB', 'Gene', '6390', (231, 235)) ('SDHB', 'Gene', (231, 235)) ('SDHB', 'Gene', '6390', (247, 251)) ('mutated', 'Var', (236, 243)) ('SDHB', 'Gene', '6390', (209, 213)) ('SDHB', 'Gene', (247, 251)) ('SDHB', 'Gene', (209, 213)) 68472 30893643 PPGL with driver mutations associated with different molecular subgroups as well as those without a driver mutation was classified as Wnt/unknown. ('associated', 'Reg', (27, 37)) ('PPGL', 'Gene', (0, 4)) ('mutations', 'Var', (17, 26)) ('PPGL', 'Chemical', '-', (0, 4)) 68482 30893643 PPGL-related driver mutations were detected in 437 patients (62.6%, 95% CI 58.5-65.7, Supplementary Figure 3, Supplementary Table 1) that were confirmed as germline in 178 (25.3%, 95% CI 22.3-28.7) and somatic in 237 (33.7%, 95% CI 30.3-37.3). ('PPGL', 'Chemical', '-', (0, 4)) ('PPGL-related', 'Gene', (0, 12)) ('patients', 'Species', '9606', (51, 59)) ('mutations', 'Var', (20, 29)) 68484 30893643 Two-molecular subgroups: SDHB mutated 58 patients (8.3%, 95% CI 6.4-10.5, Table 2) and SDHB wild type 645 patients (91.8% 95% CI 89.5-93.6). ('mutated', 'Var', (30, 37)) ('patients', 'Species', '9606', (41, 49)) ('SDHB', 'Gene', '6390', (25, 29)) ('patients', 'Species', '9606', (106, 114)) ('SDHB', 'Gene', (25, 29)) ('SDHB', 'Gene', '6390', (87, 91)) ('SDHB', 'Gene', (87, 91)) 68489 30893643 Categorization accordingly to the 2-,3- and 4-molecular subgroup systems as well as catecholamine profile, WHO classification and ATRX mutation status correlated with metastatic disease in univariate Cox regression analyses (Figure 1, Table 3): Those with SDHB mutated PPGLs had metastatic disease in 46.6% (27/58 patients, OR 8.81 [95% CI 4.92-15.78]; P<0.001) that was higher compared to SDHB wild type 8.9% (58/645 patients) PPGLs. ('SDHB', 'Gene', '6390', (390, 394)) ('mutated', 'Var', (261, 268)) ('PPGL', 'Chemical', '-', (269, 273)) ('ATRX', 'Gene', (130, 134)) ('PPGLs', 'Gene', (269, 274)) ('patients', 'Species', '9606', (314, 322)) ('PPGL', 'Chemical', '-', (428, 432)) ('SDHB', 'Gene', (390, 394)) ('ATRX', 'Gene', '546', (130, 134)) ('SDHB', 'Gene', '6390', (256, 260)) ('patients', 'Species', '9606', (418, 426)) ('catecholamine profile', 'Phenotype', 'HP:0003334', (84, 105)) ('catecholamine', 'Chemical', 'MESH:D002395', (84, 97)) ('SDHB', 'Gene', (256, 260)) ('metastatic disease', 'CPA', (279, 297)) 68493 30893643 While ATRX mutated PPGL showed a positive correlation with metastases in the univariate analysis, information on ATRX mutation status was only available in a subset of patients (467/703) that also lacked complete clinical annotations. ('ATRX', 'Gene', '546', (113, 117)) ('PPGL', 'Gene', (19, 23)) ('ATRX', 'Gene', (6, 10)) ('metastases', 'Disease', 'MESH:D009362', (59, 69)) ('PPGL', 'Chemical', '-', (19, 23)) ('ATRX', 'Gene', '546', (6, 10)) ('patients', 'Species', '9606', (168, 176)) ('metastases', 'Disease', (59, 69)) ('mutated', 'Var', (11, 18)) ('ATRX', 'Gene', (113, 117)) ('positive', 'Reg', (33, 41)) 68495 30893643 In model 1 (exploring the role of 2-molecular subtype; Table 3, Column B), SDHB mutation (OR 5.68 [95% CI 1.79-18.06]; P=0.003) as well as norepinephrine (OR 3.01 [95% CI 1.02-8.79]; P=0.045) and dopamine (OR 6.39 [95% CI 1.62-25.24]; P=0.008) secretion but not WHO classification were associated with metastatic disease. ('SDHB', 'Gene', '6390', (75, 79)) ('norepinephrine', 'MPA', (139, 153)) ('dopamine', 'MPA', (196, 204)) ('SDHB', 'Gene', (75, 79)) ('mutation', 'Var', (80, 88)) ('dopamine', 'Chemical', 'MESH:D004298', (196, 204)) ('norepinephrine', 'Chemical', 'MESH:D009638', (139, 153)) 68498 30893643 Thus, in the context of clinical characteristics the only relevant molecular biomarker for predicting metastasis was categorization accordingly to SDHB mutation status. ('SDHB', 'Gene', '6390', (147, 151)) ('mutation', 'Var', (152, 160)) ('SDHB', 'Gene', (147, 151)) 68499 30893643 Age at diagnosis (Hazard ratio [HR] 1.04 [95% CI 1.01-1.05]; P=0.019), metastatic stage (HR 6.63 [95% CI 3.46-12.7]; p<0.001), PGL (HR 2.6 [95% CI 1.32-5.15]; P=0.006), SDHB mutation (HR [95% CI 1.32-5.94]; P=0.007), pseudohypoxia TCA-cycle (HR 2.28 [95% CI 1.03-5.08]; p=0.043) and ATRX mutation (HR 9.44 [95% CI 3.29-27.15]; P<0.001) correlated with worse survival in univariate cox regression analyses (Table 4, Supplementary Figure 4). ('mutation', 'Var', (288, 296)) ('SDHB', 'Gene', '6390', (169, 173)) ('SDHB', 'Gene', (169, 173)) ('mutation', 'Var', (174, 182)) ('ATRX', 'Gene', '546', (283, 287)) ('worse', 'NegReg', (352, 357)) ('TCA', 'Chemical', 'MESH:D014233', (231, 234)) ('ATRX', 'Gene', (283, 287)) 68506 30893643 While tumor location, biochemical phenotype and the driver gene classifications all showed different frequencies of metastatic disease in the univariate analyses, the only categorization accordingly to a driver gene that remained significant in the multivariate models was SDHB mutation status. ('metastatic disease', 'Disease', (116, 134)) ('SDHB', 'Gene', '6390', (273, 277)) ('SDHB', 'Gene', (273, 277)) ('tumor', 'Disease', 'MESH:D009369', (6, 11)) ('mutation', 'Var', (278, 286)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('tumor', 'Disease', (6, 11)) 68508 30893643 Major driver genes in the reviewed studies were NF1, VHL, RET, SDHB, and HRAS that were mutated in 45.2% in of PPGL. ('RET', 'Gene', '5979', (58, 61)) ('SDHB', 'Gene', (63, 67)) ('NF1', 'Gene', '4763', (48, 51)) ('HRAS', 'Gene', '3265', (73, 77)) ('HRAS', 'Gene', (73, 77)) ('VHL', 'Gene', (53, 56)) ('RET', 'Gene', (58, 61)) ('VHL', 'Gene', '7428', (53, 56)) ('mutated', 'Var', (88, 95)) ('SDHB', 'Gene', '6390', (63, 67)) ('PPGL', 'Chemical', '-', (111, 115)) ('NF1', 'Gene', (48, 51)) 68517 30893643 reviewed the frequency of metastatic disease in patients with hereditary PPGL: RET, 2.9%; VHL, 3.4%; SDHD, 3.5%; and SDHB, 30.7%. ('SDHD', 'Gene', (101, 105)) ('SDHD', 'Gene', '6392', (101, 105)) ('SDHB', 'Gene', (117, 121)) ('RET', 'Gene', '5979', (79, 82)) ('VHL', 'Gene', '7428', (90, 93)) ('metastatic disease', 'Disease', (26, 44)) ('SDHB', 'Gene', '6390', (117, 121)) ('hereditary', 'Var', (62, 72)) ('RET', 'Gene', (79, 82)) ('patients', 'Species', '9606', (48, 56)) ('PPGL', 'Chemical', '-', (73, 77)) ('VHL', 'Gene', (90, 93)) ('PPGL', 'Gene', (73, 77)) 68521 30893643 However, only molecular categorization accordingly to SDHB mutation status, but not other molecular systems or mutations, was associated with metastasis in the multivariate models. ('associated', 'Reg', (126, 136)) ('SDHB', 'Gene', '6390', (54, 58)) ('metastasis', 'CPA', (142, 152)) ('SDHB', 'Gene', (54, 58)) ('mutation', 'Var', (59, 67)) 68525 30893643 Lack of data on ATRX inactivation or TERT expression is also a relevant limitation as it has been associated with higher frequency of metastasis as well as poor survival. ('inactivation', 'Var', (21, 33)) ('TERT', 'Gene', (37, 41)) ('TERT', 'Gene', '7015', (37, 41)) ('ATRX', 'Gene', '546', (16, 20)) ('metastasis', 'CPA', (134, 144)) ('ATRX', 'Gene', (16, 20)) 68532 30893643 However, only SDHB mutation status remained significant in the multivariate model. ('SDHB', 'Gene', '6390', (14, 18)) ('mutation', 'Var', (19, 27)) ('SDHB', 'Gene', (14, 18)) 68605 30052223 An immediate urinary normetadrenaline/creatinine ratio was high at 5.40umol/mmol creat (normal range 0.00-0.350 umol/mmol creat), considered highly suspicious of pheochromocytoma. ('creat', 'Chemical', '-', (38, 43)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (162, 178)) ('creatinine', 'Chemical', 'MESH:D003404', (38, 48)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (162, 178)) ('5.40umol/mmol creat', 'Var', (67, 86)) ('creat', 'Chemical', '-', (81, 86)) ('normetadrenaline', 'Chemical', 'MESH:D009647', (21, 37)) ('creat', 'Chemical', '-', (122, 127)) ('urinary normetadrenaline/creatinine ratio', 'MPA', (13, 54)) ('pheochromocytoma', 'Disease', (162, 178)) 68647 26998444 Classic triad of headache, palpitation and diaphoresis in hypertensive patients had the LR+ 6.312 (95 % CI 0.217-183.217) and LR-0.139 (95 % CI 0.059-0.331). ('hypertensive', 'Disease', 'MESH:D006973', (58, 70)) ('palpitation', 'Disease', (27, 38)) ('headache', 'Disease', (17, 25)) ('hypertensive', 'Disease', (58, 70)) ('patients', 'Species', '9606', (71, 79)) ('headache', 'Phenotype', 'HP:0002315', (17, 25)) ('headache', 'Disease', 'MESH:D006261', (17, 25)) ('diaphoresis', 'Phenotype', 'HP:0000975', (43, 54)) ('palpitation', 'Phenotype', 'HP:0001962', (27, 38)) ('LR+', 'Var', (88, 91)) ('LR-0.139', 'Var', (126, 134)) ('diaphoresis', 'Disease', (43, 54)) 68659 26998444 Clinical awareness of this tumor should be stressed because 1) Surgical removal is curative in more than 90 % of patients (The 5-year patient survival after removal of benign pheochromocytoma has been ranged from 84 to 96 %), 2) Tumor excision has significant effect on hypertension, the most important cause of pheochromocytoma related mortality and morbidity. ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('patient', 'Species', '9606', (113, 120)) ('hypertension', 'Disease', (270, 282)) ('tumor', 'Disease', (27, 32)) ('patients', 'Species', '9606', (113, 121)) ('hypertension', 'Phenotype', 'HP:0000822', (270, 282)) ('pheochromocytoma', 'Disease', (312, 328)) ('Tumor', 'Phenotype', 'HP:0002664', (229, 234)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (175, 191)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (312, 328)) ('pheochromocytoma', 'Disease', (175, 191)) ('hypertension', 'Disease', 'MESH:D006973', (270, 282)) ('Tumor excision', 'Var', (229, 243)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (312, 328)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (175, 191)) ('tumor', 'Disease', 'MESH:D009369', (27, 32)) ('patient', 'Species', '9606', (134, 141)) 68771 25494863 Tumor tissue analysis identified LOH at the SDHB locus in three pituitary adenomas and loss of heterozygosity at the MEN1 locus in two pheochromocytomas. ('LOH', 'Var', (33, 36)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (64, 81)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (64, 82)) ('SDHB', 'Gene', '6390', (44, 48)) ('pituitary adenomas', 'Disease', (64, 82)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (135, 152)) ('MEN1', 'Gene', '4221', (117, 121)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (135, 151)) ('MEN1', 'Gene', (117, 121)) ('SDHB', 'Gene', (44, 48)) ('pheochromocytomas', 'Disease', (135, 152)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (135, 152)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (64, 82)) 68772 25494863 All the pituitary adenomas of patients affected by SDHX alterations have a unique histological feature not previously described in this context. ('pituitary adenoma', 'Phenotype', 'HP:0002893', (8, 25)) ('alterations', 'Var', (56, 67)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (8, 26)) ('patients', 'Species', '9606', (30, 38)) ('SDHX', 'Chemical', '-', (51, 55)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (8, 26)) ('pituitary adenomas', 'Disease', (8, 26)) ('SDHX', 'Gene', (51, 55)) 68773 25494863 Mutations in the genes known to cause pheo/PGL can rarely be associated with pituitary adenomas, whereas mutation in a gene predisposing to pituitary adenomas (MEN1) can be associated with pheo/PGL. ('mutation', 'Var', (105, 113)) ('pituitary adenomas', 'Disease', (77, 95)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (77, 94)) ('pituitary adenomas', 'Disease', (140, 158)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (140, 157)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (77, 95)) ('MEN1', 'Gene', (160, 164)) ('pheo/PGL', 'Disease', (189, 197)) ('Mutations', 'Var', (0, 9)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (140, 158)) ('MEN1', 'Gene', '4221', (160, 164)) ('associated', 'Reg', (173, 183)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (77, 95)) ('pheo', 'Chemical', '-', (38, 42)) ('associated', 'Reg', (61, 71)) ('pheo', 'Chemical', '-', (189, 193)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (140, 158)) 68778 25494863 The simultaneous occurrence of these two tumor types might be explained by the following: 1) a pheo/PGL-related gene mutation, which, in addition to the pheo/PGL, also causes PA, as suggested for the SDHX mutation being involved in PA formation; 2) a mutation in a familial PA gene that also causes pheo/PGL; 3) a digenic disease, ie, two gene abnormalities are present in the same patient or family causing the two diseases; 4) a single, possibly novel, gene causing both diseases; 5) ectopic hypothalamic hormone-secreting adrenal tumors causing pituitary enlargement mimicking PA; or 6) the development of a pituitary adenoma and a pheo/PGL in the same patient or same family due to pure coincidence. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (611, 628)) ('renal tumor', 'Phenotype', 'HP:0009726', (527, 538)) ('tumor', 'Phenotype', 'HP:0002664', (533, 538)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (611, 628)) ('adrenal tumors', 'Disease', (525, 539)) ('patient', 'Species', '9606', (382, 389)) ('PGL; 3', 'Gene', (304, 310)) ('pituitary adenoma', 'Disease', (611, 628)) ('pituitary enlargement', 'Disease', 'MESH:D006529', (548, 569)) ('SDHX', 'Chemical', '-', (200, 204)) ('pheo', 'Chemical', '-', (153, 157)) ('pheo', 'Chemical', '-', (635, 639)) ('pituitary enlargement', 'Phenotype', 'HP:0012505', (548, 569)) ('pituitary enlargement', 'Disease', (548, 569)) ('patient', 'Species', '9606', (656, 663)) ('tumor', 'Disease', (41, 46)) ('PGL; 3', 'Gene', '6391', (304, 310)) ('tumor', 'Disease', (533, 538)) ('pheo', 'Chemical', '-', (95, 99)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) ('adrenal tumors', 'Disease', 'MESH:D000310', (525, 539)) ('pheo', 'Chemical', '-', (299, 303)) ('tumor', 'Disease', 'MESH:D009369', (533, 538)) ('mutation', 'Var', (251, 259)) ('tumors', 'Phenotype', 'HP:0002664', (533, 539)) ('mutation', 'Var', (117, 125)) ('PA', 'Disease', (580, 582)) 68781 25494863 Tumor tissue analysis identified LOH at the SDHB locus in three pituitary adenomas and LOH at the MEN1 locus in two pheochromocytomas. ('LOH', 'Var', (33, 36)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (116, 133)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (64, 81)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (64, 82)) ('SDHB', 'Gene', '6390', (44, 48)) ('pituitary adenomas', 'Disease', (64, 82)) ('SDHB', 'Gene', (44, 48)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (116, 133)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (64, 82)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (116, 132)) ('MEN1', 'Gene', (98, 102)) ('MEN1', 'Gene', '4221', (98, 102)) ('pheochromocytomas', 'Disease', (116, 133)) 68784 25494863 Probands from 23 aryl hydrocarbon receptor interacting protein (AIP) mutation negative familial isolated PA (FIPA) families (defined as two or more subjects with pituitary adenomas but no syndromic features of other diseases such as multiple endocrine neoplasia (MEN)-1 or Carney complex) served as controls. ('endocrine neoplasia (MEN)-1', 'Gene', (242, 269)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (242, 261)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (162, 180)) ('familial isolated PA', 'Disease', (87, 107)) ('AIP', 'Gene', '9049', (64, 67)) ('mutation', 'Var', (69, 77)) ('Carney complex', 'Disease', (273, 287)) ('AIP', 'Gene', (64, 67)) ('pituitary adenomas', 'Disease', (162, 180)) ('endocrine neoplasia (MEN)-1', 'Gene', '4221', (242, 269)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (162, 179)) ('neoplasia', 'Phenotype', 'HP:0002664', (252, 261)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (162, 180)) 68792 25494863 Microsatellites D1S170 and D1S3669 for the SDHB locus were identified on the National Center for Biotechnology Information website (http://www.ncbi.nlm.nih.gov/) and the University of California, Santa Cruz Genome Browser website (http://genome.ucsc.edu/). ('D1S3669', 'Var', (27, 34)) ('SDHB', 'Gene', '6390', (43, 47)) ('SDHB', 'Gene', (43, 47)) ('D1S170', 'Var', (16, 22)) 68793 25494863 Details of the microsatellites at the 11q13 locus (for MEN1) were previously described. ('microsatellites', 'Var', (15, 30)) ('MEN1', 'Gene', (55, 59)) ('MEN1', 'Gene', '4221', (55, 59)) 68796 25494863 Pheochromocytomas of patients with the MEN1 mutation were stained for menin using a rabbit polyclonal antimenin antibody (Abcam; ab2605, dilution 1:500), as previously described. ('Pheochromocytomas', 'Disease', 'MESH:D010673', (0, 17)) ('menin', 'Gene', (70, 75)) ('mutation', 'Var', (44, 52)) ('rabbit', 'Species', '9986', (84, 90)) ('menin', 'Gene', '4221', (106, 111)) ('patients', 'Species', '9606', (21, 29)) ('Pheochromocytomas', 'Disease', (0, 17)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('menin', 'Gene', (106, 111)) ('menin', 'Gene', '4221', (70, 75)) ('MEN1', 'Gene', (39, 43)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('MEN1', 'Gene', '4221', (39, 43)) 68809 25494863 One patient with a VHL mutation and a family history of clear-cell renal tumor and multiple hemangioblastomas had a PA presenting at 15 years (no typical VHL manifestations at this stage). ('mutation', 'Var', (23, 31)) ('clear-cell renal tumor', 'Phenotype', 'HP:0006770', (56, 78)) ('VHL', 'Gene', (19, 22)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('patient', 'Species', '9606', (4, 11)) ('VHL', 'Gene', (154, 157)) ('multiple hemangioblastomas', 'Disease', 'MESH:D018325', (83, 109)) ('VHL', 'Gene', '7428', (19, 22)) ('VHL', 'Gene', '7428', (154, 157)) ('clear-cell renal tumor', 'Disease', 'MESH:C538614', (56, 78)) ('renal tumor', 'Phenotype', 'HP:0009726', (67, 78)) ('multiple hemangioblastomas', 'Disease', (83, 109)) ('multiple hemangioblastomas', 'Phenotype', 'HP:0012329', (83, 109)) ('clear-cell renal tumor', 'Disease', (56, 78)) 68810 25494863 Two patients with MEN1 mutations had a pheochromocytoma. ('MEN1', 'Gene', (18, 22)) ('pheochromocytoma', 'Disease', (39, 55)) ('MEN1', 'Gene', '4221', (18, 22)) ('mutations', 'Var', (23, 32)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (39, 55)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (39, 55)) ('patients', 'Species', '9606', (4, 12)) 68821 25494863 All patients harbored one gene mutation except one patient, who had a VHL mutation and an SDHA variant of unknown significance. ('VHL', 'Gene', (70, 73)) ('harbored', 'Reg', (13, 21)) ('mutation', 'Var', (74, 82)) ('SDHA', 'Gene', '6389', (90, 94)) ('VHL', 'Gene', '7428', (70, 73)) ('mutation', 'Var', (31, 39)) ('patient', 'Species', '9606', (4, 11)) ('SDHA', 'Gene', (90, 94)) ('patient', 'Species', '9606', (51, 58)) ('patients', 'Species', '9606', (4, 12)) 68823 25494863 None of the patients in our cohort had AIP or CDKN1B mutations. ('patients', 'Species', '9606', (12, 20)) ('CDKN1B', 'Gene', '1027', (46, 52)) ('AIP', 'Gene', '9049', (39, 42)) ('mutations', 'Var', (53, 62)) ('AIP', 'Gene', (39, 42)) ('CDKN1B', 'Gene', (46, 52)) 68824 25494863 We identified 11 kindreds (including 16 patients) with germline SDHX variants (Supplemental Table 6). ('variants', 'Var', (69, 77)) ('SDHX', 'Chemical', '-', (64, 68)) ('SDHX', 'Gene', (64, 68)) ('patients', 'Species', '9606', (40, 48)) 68825 25494863 Seven families had a pathogenic SDH mutation, whereas four had a variant of unknown significance. ('SDH', 'Gene', (32, 35)) ('SDH', 'Gene', '6390', (32, 35)) ('pathogenic', 'Reg', (21, 31)) ('mutation', 'Var', (36, 44)) 68826 25494863 All patients with SDHX mutations/variants had a pituitary macroadenoma. ('SDHX', 'Chemical', '-', (18, 22)) ('pituitary macroadenoma', 'Disease', (48, 70)) ('patients', 'Species', '9606', (4, 12)) ('mutations/variants', 'Var', (23, 41)) ('SDHX', 'Gene', (18, 22)) ('pituitary macroadenoma', 'Disease', 'MESH:D010900', (48, 70)) 68828 25494863 In particular, patient 5 was interesting in whom the germline mutation was a large deletion affecting exons 6-8 of the SDHB gene, whereas in the tumor sample the whole gene was deleted with no detectable exons 6-8 and a reduced amount of the other exons. ('patient', 'Species', '9606', (15, 22)) ('tumor', 'Disease', 'MESH:D009369', (145, 150)) ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('SDHB', 'Gene', '6390', (119, 123)) ('tumor', 'Disease', (145, 150)) ('SDHB', 'Gene', (119, 123)) ('deletion', 'Var', (83, 91)) 68830 25494863 One of these (c.969C>T, p.Gly323Gly) was identified in a patient (patient 15) with a Wilms tumor (at the age of 1 y), retroperitoneal liposarcomas (32 and 40 y), a PGL in the retroperitoneum (50 y), a renal oncocytoma (50 y), and a nonfunctioning pituitary adenoma (NFPA; 53 y). ('pituitary adenoma', 'Disease', 'MESH:D010911', (247, 264)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (247, 264)) ('Wilms tumor', 'Disease', (85, 96)) ('liposarcomas', 'Phenotype', 'HP:0012034', (134, 146)) ('c.969C>T', 'Var', (14, 22)) ('pituitary adenoma', 'Disease', (247, 264)) ('renal oncocytoma', 'Disease', (201, 217)) ('patient', 'Species', '9606', (57, 64)) ('nonfunctioning pituitary adenoma', 'Phenotype', 'HP:0011761', (232, 264)) ('retroperitoneal liposarcomas', 'Phenotype', 'HP:0006729', (118, 146)) ('retroperitoneal liposarcomas', 'Disease', (118, 146)) ('p.Gly323Gly', 'Var', (24, 35)) ('Wilms tumor', 'Disease', 'MESH:D009396', (85, 96)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('p.Gly323Gly', 'SUBSTITUTION', 'None', (24, 35)) ('renal oncocytoma', 'Disease', 'MESH:C537750', (201, 217)) ('Wilms tumor', 'Phenotype', 'HP:0002667', (85, 96)) ('renal oncocytoma', 'Phenotype', 'HP:0011798', (201, 217)) ('retroperitoneal liposarcomas', 'Disease', 'MESH:C538370', (118, 146)) ('patient', 'Species', '9606', (66, 73)) ('c.969C>T', 'Mutation', 'rs142849100', (14, 22)) 68831 25494863 His mother (no known tumors) carried the c.969CA p.Arg27Gln, patient 17) of unknown significance. ('patient', 'Species', '9606', (61, 68)) ('c.80G>A p.Arg27Gln', 'Var', (41, 59)) ('SDHB', 'Gene', '6390', (27, 31)) ('p.Arg27Gln', 'Mutation', 'rs373976827', (49, 59)) ('SDHB', 'Gene', (27, 31)) ('c.80G>A', 'Mutation', 'rs200671534', (41, 48)) 68835 25494863 An SDHAF2 variant c.-52T>C was identified in a patient with somatotroph macroadenoma and head and neck PGL. ('SDHAF2', 'Gene', (3, 9)) ('c.-52T>C', 'Var', (18, 26)) ('patient', 'Species', '9606', (47, 54)) ('c.-52T>C', 'Mutation', 'rs964335433', (18, 26)) ('variant c.-52T>C', 'Var', (10, 26)) ('somatotroph macroadenoma', 'Disease', (60, 84)) ('somatotroph macroadenoma', 'Disease', 'MESH:D049912', (60, 84)) ('SDHAF2', 'Gene', '54949', (3, 9)) 68837 25494863 We identified two families with SDH mutations in which a family member with a PA did not carry the germline SDHX mutation: family 6 with two SDHC mutation-positive siblings had PA and/or PGL, whereas a first cousin had an NFPA but no SDHC mutation; and family 7 in whom the parent and child both had SDHD mutation-positive PGL and another child had a microprolactinoma but no SDHD mutation (Supplemental Figure 1). ('SDHD', 'Gene', (376, 380)) ('SDH', 'Gene', (234, 237)) ('SDH', 'Gene', '6390', (32, 35)) ('SDHC', 'Gene', (141, 145)) ('microprolactinoma', 'Phenotype', 'HP:0012341', (351, 368)) ('SDH', 'Gene', (376, 379)) ('SDH', 'Gene', '6390', (141, 144)) ('SDHC', 'Gene', (234, 238)) ('SDH', 'Gene', (32, 35)) ('SDHD', 'Gene', '6392', (300, 304)) ('child', 'Species', '9606', (285, 290)) ('SDH', 'Gene', '6390', (108, 111)) ('microprolactinoma', 'Disease', (351, 368)) ('SDH', 'Gene', '6390', (300, 303)) ('SDH', 'Gene', (141, 144)) ('child', 'Species', '9606', (339, 344)) ('prolactinoma', 'Phenotype', 'HP:0040278', (356, 368)) ('SDHC', 'Gene', '6391', (141, 145)) ('SDHX', 'Chemical', '-', (108, 112)) ('SDH', 'Gene', '6390', (234, 237)) ('SDHD', 'Gene', '6392', (376, 380)) ('SDHD', 'Gene', (300, 304)) ('microprolactinoma', 'Disease', 'MESH:D015175', (351, 368)) ('SDH', 'Gene', '6390', (376, 379)) ('mutations', 'Var', (36, 45)) ('SDHC', 'Gene', '6391', (234, 238)) ('SDH', 'Gene', (300, 303)) ('SDH', 'Gene', (108, 111)) 68838 25494863 An 18-year-old patient with a pathogenic VHL mutation [c.340G>C, a missense mutation affecting a surface amino-acid ], had an invasive GH- and prolactin (PRL)-positive PA as shown in Supplemental Table 6 and Supplemental Figure 2. ('PRL', 'Gene', (154, 157)) ('patient', 'Species', '9606', (15, 22)) ('[c.340G>C', 'Var', (54, 63)) ('prolactin', 'Gene', '5617', (143, 152)) ('PRL', 'Gene', '5617', (154, 157)) ('pathogenic', 'Reg', (30, 40)) ('prolactin', 'Gene', (143, 152)) ('c.340G>C', 'Mutation', 'rs869025636', (55, 63)) ('VHL', 'Gene', (41, 44)) ('VHL', 'Gene', '7428', (41, 44)) 68839 25494863 We identified two patients (patients 22 and 23) with a germline MEN1 mutation and pheochromocytoma, whereas all the other tested genes were normal (Supplemental Table 6). ('pheochromocytoma', 'Disease', (82, 98)) ('mutation', 'Var', (69, 77)) ('MEN1', 'Gene', '4221', (64, 68)) ('patients', 'Species', '9606', (18, 26)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (82, 98)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (82, 98)) ('MEN1', 'Gene', (64, 68)) ('patients', 'Species', '9606', (28, 36)) 68840 25494863 Both pheochromocytomas showed LOH in the MEN1 gene, supporting, although not proving, the pathogenic role of MEN1 in these tumors (see Figure 4, A and B). ('LOH', 'Var', (30, 33)) ('MEN1', 'Gene', '4221', (41, 45)) ('tumors', 'Disease', (123, 129)) ('tumors', 'Disease', 'MESH:D009369', (123, 129)) ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (5, 21)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (5, 22)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('MEN1', 'Gene', (109, 113)) ('MEN1', 'Gene', '4221', (109, 113)) ('pheochromocytomas', 'Disease', (5, 22)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (5, 22)) ('MEN1', 'Gene', (41, 45)) 68845 25494863 The PAs of patients with SDHX mutations (patients 1 and 2 from family 1, patient 4, and patient 5) were characterized by intracytoplasmic vacuoles. ('patient', 'Species', '9606', (88, 95)) ('patient', 'Species', '9606', (41, 48)) ('PAs', 'Disease', (4, 7)) ('patient', 'Species', '9606', (11, 18)) ('SDHX', 'Chemical', '-', (25, 29)) ('PAs', 'Disease', 'MESH:D011471', (4, 7)) ('mutations', 'Var', (30, 39)) ('patient', 'Species', '9606', (73, 80)) ('patients', 'Species', '9606', (41, 49)) ('SDHX', 'Gene', (25, 29)) ('patients', 'Species', '9606', (11, 19)) 68850 25494863 Vacuoles were not seen in the PA of the patient with the germline VHL mutation (without SDH mutation) (Supplemental Figure 2). ('SDH', 'Gene', (88, 91)) ('patient', 'Species', '9606', (40, 47)) ('SDH', 'Gene', '6390', (88, 91)) ('VHL', 'Gene', (66, 69)) ('mutation', 'Var', (70, 78)) ('VHL', 'Gene', '7428', (66, 69)) 68851 25494863 The SDHB staining of PAs with the SDHB mutation showed either a loss of expression of SDHB or a faint expression (Figures 2D and 3E). ('SDHB', 'Gene', (86, 90)) ('mutation', 'Var', (39, 47)) ('expression', 'MPA', (102, 112)) ('PAs', 'Disease', (21, 24)) ('expression', 'MPA', (72, 82)) ('loss', 'NegReg', (64, 68)) ('PAs', 'Disease', 'MESH:D011471', (21, 24)) ('SDHB', 'Gene', '6390', (34, 38)) ('SDHB', 'Gene', '6390', (4, 8)) ('SDHB', 'Gene', (34, 38)) ('SDHB', 'Gene', (4, 8)) ('SDHB', 'Gene', '6390', (86, 90)) 68852 25494863 Because SDHX mutations are known to alter mitochondrial function, immunostaining was performed for a mitochondrial membrane protein with the anti-113-1 antibody. ('alter', 'Reg', (36, 41)) ('SDHX', 'Gene', (8, 12)) ('SDHX', 'Chemical', '-', (8, 12)) ('mitochondrial function', 'MPA', (42, 64)) ('mutations', 'Var', (13, 22)) 68856 25494863 Menin staining of the pheochromocytoma samples of the patients with MEN1 mutations showed either no menin-positive cells or weakly positive staining nuclei (Figure 4). ('menin', 'Gene', (100, 105)) ('Menin', 'Gene', (0, 5)) ('pheochromocytoma', 'Disease', (22, 38)) ('patients', 'Species', '9606', (54, 62)) ('menin', 'Gene', '4221', (100, 105)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (22, 38)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (22, 38)) ('MEN1', 'Gene', (68, 72)) ('Menin', 'Gene', '4221', (0, 5)) ('MEN1', 'Gene', '4221', (68, 72)) ('mutations', 'Var', (73, 82)) 68859 25494863 Systematic testing of this population for alterations of the known pituitary and pheo/PGL-related genes suggest that SDH mutations play a pathogenic role in the development of PAs in some of these patients. ('PAs', 'Disease', 'MESH:D011471', (176, 179)) ('SDH', 'Gene', '6390', (117, 120)) ('mutations', 'Var', (121, 130)) ('patients', 'Species', '9606', (197, 205)) ('SDH', 'Gene', (117, 120)) ('pathogenic role', 'Reg', (138, 153)) ('pheo', 'Chemical', '-', (81, 85)) ('PAs', 'Disease', (176, 179)) 68861 25494863 On the other hand, the MEN1 mutations can sometimes lead to pheo/PGLs, as suggested previously, and here we present supporting LOH and immunostaining findings. ('MEN1', 'Gene', '4221', (23, 27)) ('pheo', 'Chemical', '-', (60, 64)) ('MEN1', 'Gene', (23, 27)) ('pheo/PGLs', 'Disease', (60, 69)) ('lead to', 'Reg', (52, 59)) ('mutations', 'Var', (28, 37)) 68870 25494863 Of the six suggested explanations for the coexistence of PA and pheo/PGL that we outlined in the introductory text, we could confirm the following options: 1) a pheo/PGL-related gene causes PA, 2) a pituitary gene causes pheo/PGL, 5) ectopic hypothalamic hormone synthesis in a pheochromocytoma, and probably one or more families in our cohort match option, and 6) representing pure coincidence. ('pheo', 'Chemical', '-', (278, 282)) ('pheo', 'Chemical', '-', (221, 225)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (278, 294)) ('gene', 'Var', (178, 182)) ('pheo', 'Chemical', '-', (64, 68)) ('ectopic', 'Var', (234, 241)) ('pheo', 'Chemical', '-', (161, 165)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (278, 294)) ('pheochromocytoma', 'Disease', (278, 294)) ('causes', 'Reg', (183, 189)) ('causes', 'Reg', (214, 220)) 68873 25494863 In our cohort 19 patients (48%) had a germline alteration, among them 17 (43%) with a genetic variant in the pheo/PGL genes. ('pheo', 'Chemical', '-', (109, 113)) ('pheo/PGL', 'Gene', (109, 117)) ('patients', 'Species', '9606', (17, 25)) ('genetic variant', 'Var', (86, 101)) 68876 25494863 One of them screened a group of patients (26 PGL patients and eight carriers) with a particular SDHD mutation due to a founder effect for the presence of a PA. One GH-secreting macroadenoma and three nonfunctioning microadenomas (suggested to be incidentalomas) were diagnosed in this patient cohort. ('microadenomas', 'Disease', (215, 228)) ('patients', 'Species', '9606', (32, 40)) ('patient', 'Species', '9606', (32, 39)) ('GH-secreting macroadenoma', 'Disease', 'MESH:D049912', (164, 189)) ('patient', 'Species', '9606', (49, 56)) ('patient', 'Species', '9606', (285, 292)) ('incidentalomas', 'Disease', (246, 260)) ('microadenomas', 'Disease', 'None', (215, 228)) ('SDHD', 'Gene', '6392', (96, 100)) ('patients', 'Species', '9606', (49, 57)) ('incidentalomas', 'Disease', 'MESH:C538238', (246, 260)) ('mutation', 'Var', (101, 109)) ('SDHD', 'Gene', (96, 100)) ('GH-secreting macroadenoma', 'Disease', (164, 189)) 68878 25494863 In the second study, 309 PAs were screened for SDH mutations and a macroprolactinoma with two different somatic SDHA mutations with normal sequence in the germline was found. ('macroprolactinoma', 'Phenotype', 'HP:0012342', (67, 84)) ('prolactinoma', 'Phenotype', 'HP:0040278', (72, 84)) ('SDH', 'Gene', (112, 115)) ('mutations', 'Var', (51, 60)) ('macroprolactinoma', 'Disease', 'MESH:D015175', (67, 84)) ('SDH', 'Gene', (47, 50)) ('PAs', 'Disease', (25, 28)) ('macroprolactinoma', 'Disease', (67, 84)) ('SDHA', 'Gene', '6389', (112, 116)) ('PAs', 'Disease', 'MESH:D011471', (25, 28)) ('SDH', 'Gene', '6390', (47, 50)) ('SDH', 'Gene', '6390', (112, 115)) ('SDHA', 'Gene', (112, 116)) 68880 25494863 Two patients with SDHD mutations were found to have a PA, and in one of these cases, LOH at the SDHD locus was shown in the macroprolactinoma. ('prolactinoma', 'Phenotype', 'HP:0040278', (129, 141)) ('SDHD', 'Gene', '6392', (18, 22)) ('mutations', 'Var', (23, 32)) ('macroprolactinoma', 'Phenotype', 'HP:0012342', (124, 141)) ('SDHD', 'Gene', '6392', (96, 100)) ('patients', 'Species', '9606', (4, 12)) ('macroprolactinoma', 'Disease', 'MESH:D015175', (124, 141)) ('SDHD', 'Gene', (18, 22)) ('SDHD', 'Gene', (96, 100)) ('macroprolactinoma', 'Disease', (124, 141)) 68882 25494863 Summarizing our cases combined with the cases available in the literature (altogether 109 cases since 1952), we have tried to identify any particular features for each gene alteration for the tumor not classically associated with that gene. ('alteration', 'Var', (173, 183)) ('tumor', 'Disease', (192, 197)) ('tumor', 'Disease', 'MESH:D009369', (192, 197)) ('tumor', 'Phenotype', 'HP:0002664', (192, 197)) 68883 25494863 Twenty cases have a confirmed SDHX mutation with pituitary adenoma [(two SDHA, eight SDHB, two SDHC, and eight SDHD ]. ('pituitary adenoma', 'Disease', 'MESH:D010911', (49, 66)) ('SDHC', 'Gene', (95, 99)) ('SDHA', 'Gene', (73, 77)) ('SDHC', 'Gene', '6391', (95, 99)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (49, 66)) ('SDHX', 'Chemical', '-', (30, 34)) ('SDHA', 'Gene', '6389', (73, 77)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('SDHD', 'Gene', '6392', (111, 115)) ('mutation', 'Var', (35, 43)) ('SDHX', 'Gene', (30, 34)) ('SDHD', 'Gene', (111, 115)) ('pituitary adenoma', 'Disease', (49, 66)) 68884 25494863 The patients with an SDH mutation had various PA types (Supplemental Tables 3 and 6): nine macroprolactinomas, three somatotroph adenomas, and five NFPAs have been described. ('PAs', 'Disease', (150, 153)) ('PAs', 'Disease', 'MESH:D011471', (150, 153)) ('macroprolactinoma', 'Phenotype', 'HP:0012342', (91, 108)) ('adenomas', 'Disease', 'MESH:D000236', (129, 137)) ('mutation', 'Var', (25, 33)) ('macroprolactinoma', 'Disease', 'MESH:D015175', (91, 108)) ('SDH', 'Gene', (21, 24)) ('adenomas', 'Disease', (129, 137)) ('macroprolactinoma', 'Disease', (91, 108)) ('patients', 'Species', '9606', (4, 12)) ('prolactinoma', 'Phenotype', 'HP:0040278', (96, 108)) ('SDH', 'Gene', '6390', (21, 24)) 68890 25494863 Two patients had a VHL mutation, one with a PRL and one with a GH- and PRL-secreting adenoma. ('mutation', 'Var', (23, 31)) ('PRL', 'Gene', '5617', (71, 74)) ('adenoma', 'Disease', (85, 92)) ('VHL', 'Gene', (19, 22)) ('PRL', 'Gene', '5617', (44, 47)) ('VHL', 'Gene', '7428', (19, 22)) ('patients', 'Species', '9606', (4, 12)) ('PRL', 'Gene', (71, 74)) ('PRL', 'Gene', (44, 47)) ('adenoma', 'Disease', 'MESH:D000236', (85, 92)) 68891 25494863 Six patients had a confirmed MEN1 mutation and pheo/PGL: five patients with pheochromocytoma and one head and neck PGL. ('pheo', 'Chemical', '-', (76, 80)) ('pheochromocytoma', 'Disease', (76, 92)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (76, 92)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (76, 92)) ('mutation', 'Var', (34, 42)) ('pheo', 'Chemical', '-', (47, 51)) ('MEN1', 'Gene', '4221', (29, 33)) ('MEN1', 'Gene', (29, 33)) ('patients', 'Species', '9606', (4, 12)) ('patients', 'Species', '9606', (62, 70)) 68892 25494863 We have identified a novel feature of the PAs of patients harboring SDHX variants. ('variants', 'Var', (73, 81)) ('SDHX', 'Gene', (68, 72)) ('SDHX', 'Chemical', '-', (68, 72)) ('PAs', 'Disease', (42, 45)) ('patients', 'Species', '9606', (49, 57)) ('PAs', 'Disease', 'MESH:D011471', (42, 45)) 68899 25494863 Oncocytic PAs have recently been identified to contain somatic mutations affecting mitochondrial respiratory chain complex I, but these tumors do not show the vacuolar changes we have identified in the SDH-related samples. ('mutations', 'Var', (63, 72)) ('tumors', 'Disease', (136, 142)) ('mitochondrial respiratory chain complex I', 'Enzyme', (83, 124)) ('SDH', 'Gene', '6390', (202, 205)) ('tumors', 'Disease', 'MESH:D009369', (136, 142)) ('tumors', 'Phenotype', 'HP:0002664', (136, 142)) ('vacuolar changes', 'Phenotype', 'HP:0001922', (159, 175)) ('Oncocytic PAs', 'Disease', 'MESH:C535584', (0, 13)) ('SDH', 'Gene', (202, 205)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('Oncocytic PAs', 'Disease', (0, 13)) 68900 25494863 Inactivation of succinate dehydrogenase or VHL can lead to activation of the hypoxia inducible factor pathway and a pseudohypoxic state. ('hypoxia', 'Disease', (77, 84)) ('VHL', 'Gene', (43, 46)) ('VHL', 'Gene', '7428', (43, 46)) ('succinate dehydrogenase', 'Gene', '6390', (16, 39)) ('succinate dehydrogenase', 'Gene', (16, 39)) ('activation', 'PosReg', (59, 69)) ('Inactivation', 'Var', (0, 12)) ('hypoxia', 'Disease', 'MESH:D000860', (77, 84)) 68902 25494863 It is not known whether the vacuoles seen in the SDH-related tumors are due to the pseudohypoxic state, but we did not observe this phenomenon in the VHL mutation-related PA (Supplemental Figure 2). ('SDH', 'Gene', '6390', (49, 52)) ('tumors', 'Disease', (61, 67)) ('tumors', 'Disease', 'MESH:D009369', (61, 67)) ('VHL', 'Gene', (150, 153)) ('SDH', 'Gene', (49, 52)) ('VHL', 'Gene', '7428', (150, 153)) ('mutation-related', 'Var', (154, 170)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('tumors', 'Phenotype', 'HP:0002664', (61, 67)) 68904 25494863 These vacuoles were not specifically described in the studies of recently published SDHX mutations associated with PAs, but based on the available histological pictures, the presence of vacuoles cannot be ruled out. ('PAs', 'Disease', 'MESH:D011471', (115, 118)) ('SDHX', 'Chemical', '-', (84, 88)) ('SDHX', 'Gene', (84, 88)) ('mutations', 'Var', (89, 98)) ('PAs', 'Disease', (115, 118)) ('associated', 'Reg', (99, 109)) 68905 25494863 Vacuoles have been described in SDHB mutation-related renal carcinoma and were attributed to giant mitochondria, but the clear cytoplasm observed in these tumors can also represent glycogen or fat. ('SDHB', 'Gene', '6390', (32, 36)) ('glycogen', 'Chemical', 'MESH:D006003', (181, 189)) ('renal carcinoma', 'Disease', (54, 69)) ('tumor', 'Phenotype', 'HP:0002664', (155, 160)) ('mutation-related', 'Var', (37, 53)) ('SDHB', 'Gene', (32, 36)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (54, 69)) ('tumors', 'Phenotype', 'HP:0002664', (155, 161)) ('tumors', 'Disease', 'MESH:D009369', (155, 161)) ('tumors', 'Disease', (155, 161)) ('carcinoma', 'Phenotype', 'HP:0030731', (60, 69)) ('renal carcinoma', 'Disease', 'MESH:C538614', (54, 69)) 68909 25494863 Taking into account that succinate dehydrogenase enzymes, being part of the mitochondrial complex II, play an important role in mitochondrial function, mutations that affect the activity of these enzymes might have a role in mitochondria dysfunction. ('mutations', 'Var', (152, 161)) ('succinate dehydrogenase', 'Gene', '6390', (25, 48)) ('succinate dehydrogenase', 'Gene', (25, 48)) ('mitochondria dysfunction', 'Disease', 'MESH:C564925', (225, 249)) ('mitochondria dysfunction', 'Disease', (225, 249)) ('activity', 'MPA', (178, 186)) 68910 25494863 We believe that the vacuoles represent a hallmark of PA in patients with the SDHX variant, but their nature remains to be further investigated. ('variant', 'Var', (82, 89)) ('SDHX', 'Chemical', '-', (77, 81)) ('patients', 'Species', '9606', (59, 67)) ('SDHX', 'Gene', (77, 81)) 68916 25494863 In addition, we noted intracytoplasmic vacuoles in PAs of patients affected by SDH mutations. ('SDH', 'Gene', '6390', (79, 82)) ('mutations', 'Var', (83, 92)) ('affected', 'Reg', (67, 75)) ('PAs', 'Disease', (51, 54)) ('noted', 'Reg', (16, 21)) ('SDH', 'Gene', (79, 82)) ('PAs', 'Disease', 'MESH:D011471', (51, 54)) ('patients', 'Species', '9606', (58, 66)) 68917 25494863 Together with the single case reports available in the literature, this large cohort supports the hypothesis that in some families SDH mutations may have a role in PA formation and MEN1 mutations may have a role in the development of pheochromocytoma. ('pheochromocytoma', 'Disease', 'MESH:D010673', (234, 250)) ('MEN1', 'Gene', '4221', (181, 185)) ('role', 'Reg', (207, 211)) ('mutations', 'Var', (186, 195)) ('role', 'Reg', (156, 160)) ('mutations', 'Var', (135, 144)) ('SDH', 'Gene', '6390', (131, 134)) ('PA formation', 'Disease', (164, 176)) ('pheochromocytoma', 'Disease', (234, 250)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (234, 250)) ('SDH', 'Gene', (131, 134)) ('MEN1', 'Gene', (181, 185)) 68949 25028617 Extra-adrenal paraganglioma rate of malignancy is more than intra-adrenal paragangliomas, especially if related to succinate dehydrogenase B mutations (SDHB). ('paragangliomas', 'Phenotype', 'HP:0002668', (74, 88)) ('mutations', 'Var', (141, 150)) ('SDHB', 'Gene', (152, 156)) ('paraganglioma', 'Phenotype', 'HP:0002668', (14, 27)) ('intra-adrenal paragangliomas', 'Disease', (60, 88)) ('Extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (0, 27)) ('malignancy', 'Disease', 'MESH:D009369', (36, 46)) ('intra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (60, 88)) ('Extra-adrenal paraganglioma', 'Disease', (0, 27)) ('related', 'Reg', (104, 111)) ('paraganglioma', 'Phenotype', 'HP:0002668', (74, 87)) ('malignancy', 'Disease', (36, 46)) ('SDHB', 'Gene', '6390', (152, 156)) 68950 25028617 One study showed that 55% of paragangliomas are malignant, and 83.3% of them had genetic mutation. ('paragangliomas', 'Disease', 'MESH:D010235', (29, 43)) ('genetic mutation', 'Var', (81, 97)) ('paragangliomas', 'Disease', (29, 43)) ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) ('paragangliomas', 'Phenotype', 'HP:0002668', (29, 43)) 68992 24946328 A 24h-urine test was performed and it revealed elevated norepinephrine (3011 nmol/d [N: <600nmol/d), creatinine (107 ummol/L [N: 44-106]), and a norepinephrine/creatinine ratio (292.3 umol/mmol [N <70 umol/mmol]), thus confirming biochemical catecholamine activity, suggesting a presumptive diagnosis of a biochemically active glomus vagale. ('glomus vagale', 'Phenotype', 'HP:0002886', (327, 340)) ('292.3', 'Var', (178, 183)) ('norepinephrine', 'MPA', (56, 70)) ('elevated', 'PosReg', (47, 55)) ('creatinine', 'MPA', (101, 111)) ('catecholamine', 'Chemical', 'MESH:D002395', (242, 255)) ('norepinephrine/creatinine ratio', 'MPA', (145, 176)) ('norepinephrine', 'Chemical', 'MESH:D009638', (56, 70)) ('elevated norepinephrine', 'Phenotype', 'HP:0003345', (47, 70)) ('norepinephrine', 'Chemical', 'MESH:D009638', (145, 159)) ('creatinine', 'Chemical', 'MESH:D003404', (101, 111)) ('creatinine', 'Chemical', 'MESH:D003404', (160, 170)) ('24h', 'Chemical', '-', (2, 5)) 69026 21615192 In addition to differences in catecholamine enzyme expression, the presence of either constitutive or regulated secretory pathways contributes further to the very unique mutation-dependent catecholamine production and release, resulting in various clinical presentations. ('catecholamine', 'Chemical', 'MESH:D002395', (30, 43)) ('mutation-dependent', 'Var', (170, 188)) ('catecholamine', 'Chemical', 'MESH:D002395', (189, 202)) ('release', 'MPA', (218, 225)) ('resulting in', 'Reg', (227, 239)) ('catecholamine production', 'MPA', (189, 213)) 69028 21615192 Since the mitochondria serves as the main source of prooxidants, any mitochondrial impairment leads to severe oxidative stress, a major outcome of which is tumor development. ('oxidative stress', 'MPA', (110, 126)) ('mitochondrial impairment', 'Var', (69, 93)) ('tumor', 'Disease', 'MESH:D009369', (156, 161)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('impairment', 'Var', (83, 93)) ('leads to', 'Reg', (94, 102)) ('oxidative stress', 'Phenotype', 'HP:0025464', (110, 126)) ('tumor', 'Disease', (156, 161)) ('mitochondrial impairment', 'Phenotype', 'HP:0003287', (69, 93)) 69029 21615192 In terms of cancer pathogenesis, pheochromocytomas and paragangliomas represent tumors where the oxidative phosphorylation defect due to the mutation of succinate dehydrogenase is the cause, not a consequence, of tumor development. ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('tumors', 'Disease', (80, 86)) ('succinate dehydrogenase', 'Gene', (153, 176)) ('tumor', 'Phenotype', 'HP:0002664', (213, 218)) ('cancer', 'Disease', 'MESH:D009369', (12, 18)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (33, 50)) ('tumors', 'Disease', 'MESH:D009369', (80, 86)) ('paraganglioma', 'Phenotype', 'HP:0002668', (55, 68)) ('paragangliomas', 'Phenotype', 'HP:0002668', (55, 69)) ('tumor', 'Disease', (80, 85)) ('succinate dehydrogenase', 'Gene', '6390', (153, 176)) ('tumor', 'Disease', (213, 218)) ('tumor', 'Disease', 'MESH:D009369', (80, 85)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (33, 69)) ('cancer', 'Disease', (12, 18)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (33, 49)) ('tumors', 'Phenotype', 'HP:0002664', (80, 86)) ('tumor', 'Disease', 'MESH:D009369', (213, 218)) ('cancer', 'Phenotype', 'HP:0002664', (12, 18)) ('oxidative phosphorylation defect', 'MPA', (97, 129)) ('mutation', 'Var', (141, 149)) 69030 21615192 Any succinate dehydrogenase pathogenic mutation results in the shift from oxidative phosphorylation to aerobic glycolysis in the cytoplasm (also called anaerobic glycolysis if hypoxia is the main cause of such a shift). ('mutation', 'Var', (39, 47)) ('hypoxia', 'Disease', 'MESH:D000860', (176, 183)) ('succinate dehydrogenase', 'Gene', (4, 27)) ('succinate dehydrogenase', 'Gene', '6390', (4, 27)) ('oxidative phosphorylation', 'MPA', (74, 99)) ('shift', 'Reg', (63, 68)) ('results in', 'Reg', (48, 58)) ('aerobic glycolysis', 'MPA', (103, 121)) ('pathogenic', 'Reg', (28, 38)) ('hypoxia', 'Disease', (176, 183)) 69033 21615192 Soon oxidative stress will be tightly linked to a multistep cancer process in which the mutation of various genes (perhaps in a logistic way) ultimately results in uncontrolled growth, proliferation, and metastatic potential of practically any cell. ('oxidative stress', 'Phenotype', 'HP:0025464', (5, 21)) ('mutation', 'Var', (88, 96)) ('results in', 'Reg', (153, 163)) ('proliferation', 'CPA', (185, 198)) ('linked', 'Reg', (38, 44)) ('uncontrolled', 'MPA', (164, 176)) ('cancer', 'Disease', 'MESH:D009369', (60, 66)) ('metastatic potential', 'CPA', (204, 224)) ('cancer', 'Disease', (60, 66)) ('cancer', 'Phenotype', 'HP:0002664', (60, 66)) 69052 21615192 In 1957 Axelrod and co-workers described O-methylation as the important pathways in catecholamine metabolism and LaBrosse and co-workers for the first time demonstrated elevated urine excretion of normetanephrine (O-methylated metabolite of NE) in patients with pheochromocytoma. ('pheochromocytoma', 'Disease', 'MESH:D010673', (262, 278)) ('elevated urine excretion of normetanephrine', 'Phenotype', 'HP:0003345', (169, 212)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (262, 278)) ('normetanephrine', 'Chemical', 'MESH:D009647', (197, 212)) ('elevate', 'Disease', 'MESH:D006973', (169, 176)) ('catecholamine metabolism', 'MPA', (84, 108)) ('urine excretion of normetanephrine', 'MPA', (178, 212)) ('catecholamine', 'Chemical', 'MESH:D002395', (84, 97)) ('elevate', 'Disease', (169, 176)) ('patients', 'Species', '9606', (248, 256)) ('O-methylation', 'Var', (41, 54)) ('pheochromocytoma', 'Disease', (262, 278)) 69099 21615192 Catecholamines also tend to decrease intestinal motility and tone and to inhibit intestinal secretion. ('Catecholamines', 'Chemical', 'MESH:D002395', (0, 14)) ('tone', 'CPA', (61, 65)) ('intestinal motility', 'CPA', (37, 56)) ('decrease', 'NegReg', (28, 36)) ('intestinal secretion', 'MPA', (81, 101)) ('Catecholamines', 'Var', (0, 14)) ('inhibit', 'NegReg', (73, 80)) 69117 21615192 Among different pheochromocytomas, activities of tyrosine hydroxylase are high in tumors from patients with MEN2 and low in those from von Hippel-Lindau (VHL) patients or patients with non-functional tumors. ('tumors', 'Disease', (82, 88)) ('high', 'PosReg', (74, 78)) ('tumors', 'Disease', 'MESH:D009369', (200, 206)) ('pheochromocytomas', 'Disease', (16, 33)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (16, 33)) ('von Hippel-Lindau', 'Gene', '7428', (135, 152)) ('tumors', 'Disease', 'MESH:D009369', (82, 88)) ('patients', 'Species', '9606', (94, 102)) ('activities', 'MPA', (35, 45)) ('VHL', 'Gene', (154, 157)) ('patients', 'Species', '9606', (171, 179)) ('MEN2', 'Var', (108, 112)) ('tumors', 'Phenotype', 'HP:0002664', (200, 206)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (16, 33)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('VHL', 'Gene', '7428', (154, 157)) ('low', 'NegReg', (117, 120)) ('patients', 'Species', '9606', (159, 167)) ('tyrosine hydroxylase', 'Gene', '7054', (49, 69)) ('tumors', 'Phenotype', 'HP:0002664', (82, 88)) ('tumor', 'Phenotype', 'HP:0002664', (200, 205)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (16, 32)) ('tyrosine hydroxylase', 'Gene', (49, 69)) ('tumors', 'Disease', (200, 206)) ('von Hippel-Lindau', 'Gene', (135, 152)) 69122 21615192 Translating these findings into clinical practice, patients with MEN2 pheochromocytoma present more often with paroxysmal hypertension, tachyarrhythmia, sweating, or other catecholamine-related symptoms or signs than patients with VHL tumors. ('sweating', 'Phenotype', 'HP:0000975', (153, 161)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (70, 86)) ('tachyarrhythmia', 'Disease', 'MESH:D013610', (136, 151)) ('pheochromocytoma', 'Disease', (70, 86)) ('catecholamine', 'Chemical', 'MESH:D002395', (172, 185)) ('paroxysmal hypertension', 'Disease', 'MESH:D006973', (111, 134)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (70, 86)) ('tumor', 'Phenotype', 'HP:0002664', (235, 240)) ('patients', 'Species', '9606', (51, 59)) ('paroxysmal hypertension', 'Phenotype', 'HP:0000875', (111, 134)) ('tumors', 'Phenotype', 'HP:0002664', (235, 241)) ('paroxysmal hypertension', 'Disease', (111, 134)) ('tachyarrhythmia', 'Disease', (136, 151)) ('sweating', 'Disease', (153, 161)) ('hypertension', 'Phenotype', 'HP:0000822', (122, 134)) ('VHL tumors', 'Disease', (231, 241)) ('patients', 'Species', '9606', (217, 225)) ('VHL tumors', 'Disease', 'MESH:D006623', (231, 241)) ('MEN2', 'Var', (65, 69)) 69125 21615192 One hundred seventy three patients with pheochromocytoma, including 38 with MEN2, 10 with NF1, 66 with VHL syndrome and 59 with mutations of genes for SDH type B or D were included. ('VHL syndrome', 'Disease', (103, 115)) ('SDH', 'Gene', '6390', (151, 154)) ('NF1', 'Gene', '4763', (90, 93)) ('pheochromocytoma', 'Disease', (40, 56)) ('mutations', 'Var', (128, 137)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (40, 56)) ('VHL syndrome', 'Disease', 'MESH:D006623', (103, 115)) ('SDH', 'Gene', (151, 154)) ('patients', 'Species', '9606', (26, 34)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (40, 56)) ('NF1', 'Gene', (90, 93)) 69127 21615192 VHL patients usually showed solitary increases in normetanephrine, whereas additional or solitary increases in methoxytyramine characterized 70% of patients with SDH mutations. ('patients', 'Species', '9606', (148, 156)) ('normetanephrine', 'MPA', (50, 65)) ('mutations', 'Var', (166, 175)) ('normetanephrine', 'Chemical', 'MESH:D009647', (50, 65)) ('SDH', 'Gene', '6390', (162, 165)) ('methoxytyramine', 'MPA', (111, 126)) ('VHL', 'Gene', (0, 3)) ('increases', 'PosReg', (37, 46)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (111, 126)) ('patients', 'Species', '9606', (4, 12)) ('SDH', 'Gene', (162, 165)) ('VHL', 'Gene', '7428', (0, 3)) 69128 21615192 Patients with NF1 and MEN2 could be discriminated from those with VHL and SDH mutations in 99% of cases by the combination of normetanephrine and metanephrine (Table 2). ('SDH', 'Gene', (74, 77)) ('NF1', 'Gene', '4763', (14, 17)) ('mutations', 'Var', (78, 87)) ('metanephrine', 'Chemical', 'MESH:D008676', (146, 158)) ('normetanephrine', 'Chemical', 'MESH:D009647', (126, 141)) ('Patients', 'Species', '9606', (0, 8)) ('metanephrine', 'Chemical', 'MESH:D008676', (129, 141)) ('SDH', 'Gene', '6390', (74, 77)) ('VHL', 'Gene', (66, 69)) ('VHL', 'Gene', '7428', (66, 69)) ('NF1', 'Gene', (14, 17)) 69129 21615192 Measurement of plasma methoxytyramine discriminated patients with SDH mutations from those with VHL mutations in a further 78% of cases. ('mutations', 'Var', (70, 79)) ('SDH', 'Gene', '6390', (66, 69)) ('SDH', 'Gene', (66, 69)) ('VHL', 'Gene', (96, 99)) ('discriminated', 'Reg', (38, 51)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (22, 37)) ('VHL', 'Gene', '7428', (96, 99)) ('patients', 'Species', '9606', (52, 60)) 69137 21615192 However, elevations in plasma or urinary DOPA and DA are not sensitive or specific markers of benign or metastatic pheochromocytoma since they can also be found in patients with pheochromocytoma related to SDHB mutations. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (178, 194)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (115, 131)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (115, 131)) ('mutations', 'Var', (211, 220)) ('urinary DOPA', 'Phenotype', 'HP:0011979', (33, 45)) ('pheochromocytoma', 'Disease', (178, 194)) ('SDHB', 'Gene', '6390', (206, 210)) ('DOPA', 'Chemical', 'MESH:D004295', (41, 45)) ('DA', 'Chemical', 'MESH:D004298', (50, 52)) ('urinary DOPA', 'MPA', (33, 45)) ('patients', 'Species', '9606', (164, 172)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (178, 194)) ('found', 'Reg', (155, 160)) ('SDHB', 'Gene', (206, 210)) ('pheochromocytoma', 'Disease', (115, 131)) ('elevations', 'PosReg', (9, 19)) 69207 21615192 Since the mitochondria serves as the main source of prooxidants, any mitochondrial impairment leads to severe oxidative stress, a major outcome of which is tumor development (Figure 6). ('tumor', 'Disease', 'MESH:D009369', (156, 161)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('impairment', 'Var', (83, 93)) ('leads to', 'Reg', (94, 102)) ('oxidative stress', 'Phenotype', 'HP:0025464', (110, 126)) ('tumor', 'Disease', (156, 161)) ('mitochondrial impairment', 'Phenotype', 'HP:0003287', (69, 93)) 44587 21615192 Abnormal SDH function due to mutations of nuclear DNA encoding for one of its subunits results in two completely different phenotypes. ('Abnormal SDH function', 'Disease', 'MESH:D056486', (0, 21)) ('Abnormal SDH function', 'Disease', (0, 21)) ('mutations', 'Var', (29, 38)) ('nuclear DNA', 'Gene', (42, 53)) 69216 21615192 Defects in SDHA cause a metabolic neurodegenerative disorder called Leigh syndrome, whereas SDHB, SDHC and SDHD mutations predispose to familial pheochromocytoma via different mechanisms (Figure 7). ('SDHD', 'Gene', (107, 111)) ('SDHC', 'Gene', '6391', (98, 102)) ('SDHA', 'Gene', (11, 15)) ('mutations', 'Var', (112, 121)) ('predispose', 'Reg', (122, 132)) ('cause', 'Reg', (16, 21)) ('SDHA', 'Gene', '6389', (11, 15)) ('SDHB', 'Gene', '6390', (92, 96)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (68, 82)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (136, 161)) ('Leigh syndrome', 'Disease', (68, 82)) ('SDHC', 'Gene', (98, 102)) ('neurodegenerative disorder', 'Disease', 'MESH:D019636', (34, 60)) ('Defects', 'Var', (0, 7)) ('neurodegenerative disorder', 'Disease', (34, 60)) ('SDHB', 'Gene', (92, 96)) ('familial pheochromocytoma', 'Disease', (136, 161)) ('SDHD', 'Gene', '6392', (107, 111)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (145, 161)) ('neurodegenerative disorder', 'Phenotype', 'HP:0002180', (34, 60)) 69219 21615192 Thus, when the complex II is disrupted at SDHA, the succinate dehydrogenase activity is impaired, if entirely, a severe neurodegenerative changes in various organs occur. ('neurodegenerative changes', 'Phenotype', 'HP:0002180', (120, 145)) ('disrupted', 'Var', (29, 38)) ('SDHA', 'Gene', (42, 46)) ('impaired', 'NegReg', (88, 96)) ('activity', 'MPA', (76, 84)) ('succinate dehydrogenase', 'Gene', '6390', (52, 75)) ('succinate dehydrogenase', 'Gene', (52, 75)) ('SDHA', 'Gene', '6389', (42, 46)) 69220 21615192 If the complex II is disrupted at other subunits, electron transfer is impaired (it is unknown whether various mutations may cause a different electron transfer via SDHB/C/D subunits) including the abnormal removal of electrons from the flavin group of SDHA. ('mutations', 'Var', (111, 120)) ('removal of electrons from the flavin group', 'MPA', (207, 249)) ('electron transfer', 'MPA', (50, 67)) ('impaired', 'NegReg', (71, 79)) ('SDHB', 'Gene', '6390', (165, 169)) ('SDHA', 'Gene', '6389', (253, 257)) ('cause', 'Reg', (125, 130)) ('flavin', 'Chemical', 'MESH:C024132', (237, 243)) ('SDHB', 'Gene', (165, 169)) ('SDHA', 'Gene', (253, 257)) ('electron transfer', 'MPA', (143, 160)) 69224 21615192 Any pathogenic mutation of SDH subunits results in the abolition of SDH enzymatic activity and activation of the angiogenic, hypoxic, and apoptotic pathways by various mechanisms, including increased transcription of vascular endothelial growth factor, glycolytic enzymes, and histone demethylation (Figure 7). ('mutation', 'Var', (15, 23)) ('SDH', 'Gene', (68, 71)) ('SDH', 'Gene', '6390', (27, 30)) ('angiogenic', 'Pathway', (113, 123)) ('vascular endothelial growth factor', 'Gene', (217, 251)) ('increased', 'PosReg', (190, 199)) ('glycolytic enzymes', 'Enzyme', (253, 271)) ('activation', 'PosReg', (95, 105)) ('SDH', 'Gene', (27, 30)) ('vascular endothelial growth factor', 'Gene', '7422', (217, 251)) ('transcription', 'MPA', (200, 213)) ('apoptotic pathways', 'Pathway', (138, 156)) ('SDH', 'Gene', '6390', (68, 71)) ('histone demethylation', 'MPA', (277, 298)) ('hypoxic', 'Pathway', (125, 132)) ('abolition', 'NegReg', (55, 64)) 69225 21615192 Disruptions in SDH activity also results in the accumulation of succinate, causing chronic oxidative stress, as first reported by Ishii et al. ('oxidative stress', 'Phenotype', 'HP:0025464', (91, 107)) ('Disruptions', 'Var', (0, 11)) ('results in', 'Reg', (33, 43)) ('succinate', 'MPA', (64, 73)) ('SDH', 'Gene', '6390', (15, 18)) ('activity', 'MPA', (19, 27)) ('accumulation', 'MPA', (48, 60)) ('succinate', 'Chemical', 'MESH:D019802', (64, 73)) ('SDH', 'Gene', (15, 18)) 69231 21615192 In patients with the VHL gene mutation, VHL protein cannot be degraded (there is incorrect binding of VHL protein-elongin-cullin complex) and HIF-1alpha accumulates. ('accumulates', 'PosReg', (153, 164)) ('VHL', 'Gene', (40, 43)) ('mutation', 'Var', (30, 38)) ('VHL', 'Gene', '7428', (21, 24)) ('HIF-1alpha', 'Gene', (142, 152)) ('VHL', 'Gene', '7428', (40, 43)) ('VHL', 'Gene', (102, 105)) ('patients', 'Species', '9606', (3, 11)) ('VHL', 'Gene', (21, 24)) ('binding', 'Interaction', (91, 98)) ('VHL', 'Gene', '7428', (102, 105)) ('HIF-1alpha', 'Gene', '3091', (142, 152)) 69232 21615192 Overaccumulation of HIF-1alpha results in the overexpression of various genes (e.g. ('Overaccumulation', 'Var', (0, 16)) ('HIF-1alpha', 'Gene', (20, 30)) ('HIF-1alpha', 'Gene', '3091', (20, 30)) ('overexpression', 'MPA', (46, 60)) 69241 21615192 also demonstrated the presence of giant mitochondria in renal cell carcinoma related to SDHB gene mutation. ('renal cell carcinoma', 'Disease', (56, 76)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (56, 76)) ('mutation', 'Var', (98, 106)) ('related', 'Reg', (77, 84)) ('SDHB', 'Gene', '6390', (88, 92)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (56, 76)) ('SDHB', 'Gene', (88, 92)) ('carcinoma', 'Phenotype', 'HP:0030731', (67, 76)) ('presence', 'Reg', (22, 30)) 69249 21615192 The mean age at diagnosis of paraganglioma in SDHB mutation carriers in previous series was approximately 30 years. ('paraganglioma', 'Disease', (29, 42)) ('SDHB', 'Gene', '6390', (46, 50)) ('SDHB', 'Gene', (46, 50)) ('paraganglioma', 'Disease', 'MESH:D010235', (29, 42)) ('mutation', 'Var', (51, 59)) ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) 69251 21615192 In the International SDH Consortium population, age-related penetrance (the proportion of gene carriers manifesting the signs or symptoms of the disease by a given age) among SDHB mutation carriers is estimated to be around 45% by age 40. ('SDH', 'Gene', (175, 178)) ('SDH', 'Gene', (21, 24)) ('SDH', 'Gene', '6390', (175, 178)) ('SDHB', 'Gene', '6390', (175, 179)) ('SDHB', 'Gene', (175, 179)) ('SDH', 'Gene', '6390', (21, 24)) ('mutation', 'Var', (180, 188)) ('carriers', 'Reg', (189, 197)) 69253 21615192 In patients in whom a primary tumor originates in abdominal location with subsequent development of metastatic disease, there is a 40-50% chance that the disease is related to a SDHB gene mutation. ('mutation', 'Var', (188, 196)) ('tumor', 'Disease', 'MESH:D009369', (30, 35)) ('related', 'Reg', (165, 172)) ('patients', 'Species', '9606', (3, 11)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('SDHB', 'Gene', (178, 182)) ('SDHB', 'Gene', '6390', (178, 182)) ('tumor', 'Disease', (30, 35)) 69257 21615192 Furthermore, there are excellent studies showing that SDHB mutations are associated with the presence of clear cell carcinoma and perhaps papillary thyroid carcinoma. ('papillary thyroid carcinoma', 'Disease', (138, 165)) ('clear cell carcinoma', 'Disease', 'MESH:C538614', (105, 125)) ('papillary thyroid carcinoma', 'Disease', 'MESH:D000077273', (138, 165)) ('carcinoma', 'Phenotype', 'HP:0030731', (156, 165)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (148, 165)) ('SDHB', 'Gene', '6390', (54, 58)) ('SDHB', 'Gene', (54, 58)) ('associated', 'Reg', (73, 83)) ('papillary thyroid carcinoma', 'Phenotype', 'HP:0002895', (138, 165)) ('carcinoma', 'Phenotype', 'HP:0030731', (116, 125)) ('mutations', 'Var', (59, 68)) ('clear cell carcinoma', 'Disease', (105, 125)) 69259 21615192 In addition, clinical phenotypes may differ largely between family members with the same SDHB mutation. ('differ', 'Reg', (37, 43)) ('SDHB', 'Gene', (89, 93)) ('SDHB', 'Gene', '6390', (89, 93)) ('mutation', 'Var', (94, 102)) 69260 21615192 However, recent studies show that patients with metastatic disease who developed their primary tumor before age 20 have disease most commonly related to a SDHB mutation (Pacak et al., unpublished data). ('mutation', 'Var', (160, 168)) ('SDHB', 'Gene', (155, 159)) ('SDHB', 'Gene', '6390', (155, 159)) ('tumor', 'Disease', 'MESH:D009369', (95, 100)) ('metastatic disease', 'Disease', (48, 66)) ('patients', 'Species', '9606', (34, 42)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('disease', 'Disease', (120, 127)) ('related', 'Reg', (142, 149)) ('tumor', 'Disease', (95, 100)) 69261 21615192 SDHD mutations are mainly associated with head and neck paragangliomas, most often multiple, or multiple extra-adrenal pheochromocytomas. ('neck paragangliomas', 'Disease', 'MESH:D010235', (51, 70)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (51, 70)) ('associated', 'Reg', (26, 36)) ('paragangliomas', 'Phenotype', 'HP:0002668', (56, 70)) ('mutations', 'Var', (5, 14)) ('extra-adrenal pheochromocytomas', 'Disease', (105, 136)) ('SDHD', 'Gene', '6392', (0, 4)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (111, 135)) ('extra-adrenal pheochromocytomas', 'Phenotype', 'HP:0006737', (105, 136)) ('neck paragangliomas', 'Disease', (51, 70)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (111, 136)) ('paraganglioma', 'Phenotype', 'HP:0002668', (56, 69)) ('SDHD', 'Gene', (0, 4)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (119, 136)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (119, 135)) ('multiple', 'Disease', (83, 91)) ('extra-adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (105, 136)) 69269 21615192 In contrast to SDHB gene mutation carriers where clear cell carcinoma of kidney is found in up to about 14% of patients, in SDHD carriers this number does not exceed 6%. ('SDHB', 'Gene', '6390', (15, 19)) ('clear cell carcinoma of kidney', 'Disease', (49, 79)) ('clear cell carcinoma of kidney', 'Disease', 'MESH:C538614', (49, 79)) ('SDHD', 'Gene', '6392', (124, 128)) ('mutation', 'Var', (25, 33)) ('SDHB', 'Gene', (15, 19)) ('carcinoma', 'Phenotype', 'HP:0030731', (60, 69)) ('carcinoma of kidney', 'Phenotype', 'HP:0005584', (60, 79)) ('found', 'Reg', (83, 88)) ('SDHD', 'Gene', (124, 128)) ('patients', 'Species', '9606', (111, 119)) 69271 21615192 SDHC mutations are mainly associated with the development of head and neck paragangliomas. ('neck paragangliomas', 'Disease', 'MESH:D010235', (70, 89)) ('paraganglioma', 'Phenotype', 'HP:0002668', (75, 88)) ('SDHC', 'Gene', (0, 4)) ('neck paragangliomas', 'Disease', (70, 89)) ('mutations', 'Var', (5, 14)) ('SDHC', 'Gene', '6391', (0, 4)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (70, 89)) ('associated with', 'Reg', (26, 41)) ('paragangliomas', 'Phenotype', 'HP:0002668', (75, 89)) 69273 21615192 Within a population-based international registry of patients with head and neck paragangliomas, the prevalence of SDHC mutations was 4%, versus 7% and 17% for SDHB, and SDHD, respectively. ('neck paragangliomas', 'Disease', (75, 94)) ('SDHB', 'Gene', '6390', (159, 163)) ('SDHD', 'Gene', '6392', (169, 173)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (75, 94)) ('SDHB', 'Gene', (159, 163)) ('SDHD', 'Gene', (169, 173)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (75, 94)) ('SDHC', 'Gene', (114, 118)) ('paraganglioma', 'Phenotype', 'HP:0002668', (80, 93)) ('paragangliomas', 'Phenotype', 'HP:0002668', (80, 94)) ('mutations', 'Var', (119, 128)) ('SDHC', 'Gene', '6391', (114, 118)) ('patients', 'Species', '9606', (52, 60)) 69277 21615192 During the past two decades more evidence for an important role of ATP synthase dysregulation in cancer has been presented. ('cancer', 'Disease', (97, 103)) ('cancer', 'Phenotype', 'HP:0002664', (97, 103)) ('ATP', 'Chemical', 'MESH:D000255', (67, 70)) ('dysregulation', 'Var', (80, 93)) ('cancer', 'Disease', 'MESH:D009369', (97, 103)) 69290 21615192 Thus, due to the acidic microenvironment surrounding tumors, cell surface ATP synthase inhibition holds a new avenue to specifically kill tumor cells, either directly or by killing endothelial cells of the microvessels that nourish a tumor. ('ATP', 'Chemical', 'MESH:D000255', (74, 77)) ('tumor', 'Disease', (234, 239)) ('tumor', 'Disease', (138, 143)) ('tumor', 'Disease', 'MESH:D009369', (53, 58)) ('tumors', 'Disease', 'MESH:D009369', (53, 59)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('iron', 'Chemical', 'MESH:D007501', (32, 36)) ('tumors', 'Phenotype', 'HP:0002664', (53, 59)) ('tumor', 'Disease', 'MESH:D009369', (234, 239)) ('tumor', 'Disease', (53, 58)) ('tumor', 'Disease', 'MESH:D009369', (138, 143)) ('tumor', 'Phenotype', 'HP:0002664', (234, 239)) ('inhibition', 'Var', (87, 97)) ('tumors', 'Disease', (53, 59)) ('tumor', 'Phenotype', 'HP:0002664', (138, 143)) 69298 21615192 This also applies to pheochromocytoma patients, especially those with SDHB mutations. ('SDHB', 'Gene', '6390', (70, 74)) ('SDHB', 'Gene', (70, 74)) ('pheochromocytoma', 'Disease', (21, 37)) ('mutations', 'Var', (75, 84)) ('patients', 'Species', '9606', (38, 46)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (21, 37)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (21, 37)) 69299 21615192 first observed that in patients with SDHB mutation [18F]-fluorodeoxyglycose positron emission tomography is far superior to other functional imaging studies, even to the most specific radiopharmaceutical, [18F]-fluorodopamine. ('[18F]-fluorodopamine', 'Chemical', '-', (205, 225)) ('SDHB', 'Gene', '6390', (37, 41)) ('patients', 'Species', '9606', (23, 31)) ('mutation', 'Var', (42, 50)) ('SDHB', 'Gene', (37, 41)) ('[18F]-fluorodeoxyglycose', 'Chemical', '-', (51, 75)) 69318 21615192 This approach may be used clinically to augment the therapeutic efficacy of [131I]-MIBG in patients with advanced malignant pheochromocytoma and other related tumors such as neuroblastoma. ('patients', 'Species', '9606', (91, 99)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (174, 187)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (114, 140)) ('MIBG', 'Chemical', 'MESH:D019797', (83, 87)) ('tumors', 'Disease', (159, 165)) ('therapeutic', 'MPA', (52, 63)) ('tumors', 'Phenotype', 'HP:0002664', (159, 165)) ('-MIBG', 'Gene', (82, 87)) ('neuroblastoma', 'Disease', 'MESH:D009447', (174, 187)) ('tumors', 'Disease', 'MESH:D009369', (159, 165)) ('[131I]-MIBG', 'Var', (76, 87)) ('neuroblastoma', 'Disease', (174, 187)) ('augment', 'PosReg', (40, 47)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (124, 140)) ('malignant pheochromocytoma', 'Disease', (114, 140)) 69320 21615192 In summary, various pheochromocytomas, especially those related to SDH gene mutations, can be viewed as an "oxidative stress disease" and could be successfully treated in the future by targeting oxidative phosphorylation, glycolysis, glucose sensing and its cell entry as well as microenvironment acidification and ATP handling. ('stress disease', 'Disease', (118, 132)) ('mutations', 'Var', (76, 85)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (20, 37)) ('glycolysis', 'MPA', (222, 232)) ('ATP', 'Chemical', 'MESH:D000255', (315, 318)) ('pheochromocytomas', 'Disease', (20, 37)) ('SDH', 'Gene', '6390', (67, 70)) ('targeting', 'Reg', (185, 194)) ('stress disease', 'Disease', 'MESH:D000079225', (118, 132)) ('oxidative stress', 'Phenotype', 'HP:0025464', (108, 124)) ('iron', 'Chemical', 'MESH:D007501', (288, 292)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (20, 37)) ('oxidative phosphorylation', 'MPA', (195, 220)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (20, 36)) ('SDH', 'Gene', (67, 70)) ('glucose', 'Chemical', 'MESH:D005947', (234, 241)) 69393 22855666 An aggressive behavior may also be suggested by the presence of nuclear pleomorphism, mitotic activity and infiltrative margin. ('aggressive behavior', 'Disease', (3, 22)) ('aggressive behavior', 'Disease', 'MESH:D001523', (3, 22)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (3, 22)) ('mitotic activity', 'CPA', (86, 102)) ('nuclear pleomorphism', 'Var', (64, 84)) 69406 22429592 Mutations in three genes causing well characterized tumor syndromes are associated with an increased risk of developing pheochromocytomas and paragangliomas including VHL (von Hippel-Lindau disease), NF1 (Neurofibromatosis Type 1), and RET (Multiple Endocrine Neoplasia Type 2). ('NF1', 'Gene', (200, 203)) ('tumor', 'Disease', (52, 57)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (172, 197)) ('Neoplasia', 'Phenotype', 'HP:0002664', (260, 269)) ('glioma', 'Phenotype', 'HP:0009733', (149, 155)) ('paraganglioma', 'Phenotype', 'HP:0002668', (142, 155)) ('VHL', 'Gene', '7428', (167, 170)) ('tumor', 'Disease', 'MESH:D009369', (52, 57)) ('von Hippel-Lindau disease', 'Disease', (172, 197)) ('Endocrine Neoplasia', 'Phenotype', 'HP:0100568', (250, 269)) ('RET', 'Gene', '5979', (236, 239)) ('Mutations', 'Var', (0, 9)) ('Multiple Endocrine Neoplasia Type 2', 'Disease', 'MESH:D018813', (241, 276)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (120, 137)) ('paragangliomas', 'Phenotype', 'HP:0002668', (142, 156)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (205, 222)) ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('Neurofibromatosis Type 1', 'Gene', '4763', (205, 229)) ('Neurofibromatosis Type 1', 'Gene', (205, 229)) ('RET', 'Gene', (236, 239)) ('Multiple Endocrine Neoplasia Type 2', 'Disease', (241, 276)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (120, 156)) ('NF1', 'Gene', '4763', (200, 203)) ('VHL', 'Gene', (167, 170)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (120, 136)) 69407 22429592 Mutations in any of the succinate dehydrogenase (SDH) complex subunit genes (SDHA, SDHB, SDHC, SDHD) can lead to pheochromocytomas and paragangliomas with variable penetrance, as can mutations in the subunit cofactor, SDHAF2. ('SDH', 'Gene', '6390', (49, 52)) ('SDHA', 'Gene', '6389', (218, 222)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (113, 130)) ('SDH', 'Gene', '6390', (95, 98)) ('glioma', 'Phenotype', 'HP:0009733', (142, 148)) ('paraganglioma', 'Phenotype', 'HP:0002668', (135, 148)) ('SDH', 'Gene', (83, 86)) ('paragangliomas', 'Phenotype', 'HP:0002668', (135, 149)) ('SDH', 'Gene', (89, 92)) ('SDH', 'Gene', (218, 221)) ('mutations', 'Var', (183, 192)) ('SDHD', 'Gene', '6392', (95, 99)) ('SDH', 'Gene', (49, 52)) ('SDHC', 'Gene', '6391', (89, 93)) ('SDH', 'Gene', '6390', (77, 80)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', '6390', (83, 87)) ('SDH', 'Gene', (95, 98)) ('succinate dehydrogenase', 'Gene', '6389', (24, 47)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (113, 149)) ('lead to', 'Reg', (105, 112)) ('succinate dehydrogenase', 'Gene', (24, 47)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (113, 129)) ('SDHD', 'Gene', (95, 99)) ('SDHA', 'Gene', (77, 81)) ('SDH', 'Gene', (77, 80)) ('SDHB', 'Gene', (83, 87)) ('SDHC', 'Gene', (89, 93)) ('SDH', 'Gene', '6390', (83, 86)) ('SDHA', 'Gene', '6389', (77, 81)) ('SDH', 'Gene', '6390', (218, 221)) ('SDHAF2', 'Gene', '54949', (218, 224)) ('SDHAF2', 'Gene', (218, 224)) ('SDH', 'Gene', '6390', (89, 92)) ('SDHA', 'Gene', (218, 222)) 69409 22429592 Although these tumors are rare in the general population, occurring in 2-8 per million people, they are more commonly associated with an inherited mutation than any other cancer type. ('tumors', 'Phenotype', 'HP:0002664', (15, 21)) ('people', 'Species', '9606', (87, 93)) ('cancer', 'Disease', 'MESH:D009369', (171, 177)) ('mutation', 'Var', (147, 155)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('tumors', 'Disease', 'MESH:D009369', (15, 21)) ('cancer', 'Disease', (171, 177)) ('associated', 'Reg', (118, 128)) ('cancer', 'Phenotype', 'HP:0002664', (171, 177)) ('tumors', 'Disease', (15, 21)) 69410 22429592 This review summarizes the known germline and somatic mutations leading to pheochromocytoma and paraganglioma development, as well as biochemical profiling for PCC/PGL and screening of mutation carriers. ('paraganglioma', 'Disease', 'MESH:D010235', (96, 109)) ('mutations', 'Var', (54, 63)) ('PCC/PGL', 'Gene', '1421', (160, 167)) ('glioma', 'Phenotype', 'HP:0009733', (103, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('pheochromocytoma', 'Disease', (75, 91)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (75, 91)) ('leading to', 'Reg', (64, 74)) ('paraganglioma', 'Disease', (96, 109)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (75, 91)) ('PCC/PGL', 'Gene', (160, 167)) 69424 22429592 However, currently the only reliable predictor of malignancy is a germline mutation in Succinate dehydrogenase subunit B (SDHB), one of the known susceptibility genes (discussed further below). ('malignancy', 'Disease', (50, 60)) ('Succinate dehydrogenase subunit B', 'Gene', '6390', (87, 120)) ('SDHB', 'Gene', '6390', (122, 126)) ('SDHB', 'Gene', (122, 126)) ('malignancy', 'Disease', 'MESH:D009369', (50, 60)) ('Succinate dehydrogenase subunit B', 'Gene', (87, 120)) ('germline mutation', 'Var', (66, 83)) 69425 22429592 Population-based studies have found approximately one-third of patients with apparently sporadic PCC/PGL have a germline mutation in a known susceptibility gene. ('PCC/PGL', 'Gene', '1421', (97, 104)) ('patients', 'Species', '9606', (63, 71)) ('germline mutation', 'Var', (112, 129)) ('PCC/PGL', 'Gene', (97, 104)) 69428 22429592 Therefore, although PCC/PGLs are infrequent, they are more commonly associated with an inherited mutation than any other cancer type. ('associated', 'Reg', (68, 78)) ('cancer', 'Phenotype', 'HP:0002664', (121, 127)) ('PGLs', 'Gene', '25796', (24, 28)) ('PCC/PGL', 'Gene', (20, 27)) ('cancer', 'Disease', 'MESH:D009369', (121, 127)) ('mutation', 'Var', (97, 105)) ('cancer', 'Disease', (121, 127)) ('PCC/PGL', 'Gene', '1421', (20, 27)) ('PGLs', 'Gene', (24, 28)) 69441 22429592 Under hypoxic conditions, or if there is a mutation in VHL, this interaction cannot take place, resulting in the loss of ubiquitation of HIFalpha, and thus allowing it to bind to the HIFbeta subunit and target transcription of hypoxia inducible genes. ('hypoxia', 'Disease', 'MESH:D000860', (227, 234)) ('hypoxic conditions', 'Disease', (6, 24)) ('HIFbeta', 'Protein', (183, 190)) ('HIFalpha', 'Gene', (137, 145)) ('mutation', 'Var', (43, 51)) ('hypoxic conditions', 'Disease', 'MESH:D009135', (6, 24)) ('transcription', 'MPA', (210, 223)) ('loss', 'NegReg', (113, 117)) ('target', 'Reg', (203, 209)) ('VHL', 'Gene', (55, 58)) ('bind', 'Interaction', (171, 175)) ('ubiquitation', 'MPA', (121, 133)) ('VHL', 'Gene', '7428', (55, 58)) ('hypoxia', 'Disease', (227, 234)) 69442 22429592 VHL is a tumor suppressor gene and most vHL-associated PCCs show loss of heterozygosity (LOH) of the wild type allele as the second hit according to Knudson's two hit hypothesis. ('tumor', 'Disease', 'MESH:D009369', (9, 14)) ('loss', 'Var', (65, 69)) ('PCC', 'Gene', '1421', (55, 58)) ('vHL', 'Gene', '7428', (40, 43)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('vHL', 'Gene', (40, 43)) ('PCC', 'Gene', (55, 58)) ('VHL', 'Gene', (0, 3)) ('tumor', 'Disease', (9, 14)) ('VHL', 'Gene', '7428', (0, 3)) 69444 22429592 Patients with Type 1 vHL disease have truncating mutations or exon deletions with a lower penetrance for PCC and a higher penetrance for RCC. ('exon deletions', 'Var', (62, 76)) ('PCC', 'Gene', '1421', (105, 108)) ('Patients', 'Species', '9606', (0, 8)) ('RCC', 'Phenotype', 'HP:0005584', (137, 140)) ('Type 1 vHL disease', 'Disease', (14, 32)) ('RCC', 'Disease', 'MESH:C538614', (137, 140)) ('truncating mutations', 'Var', (38, 58)) ('RCC', 'Disease', (137, 140)) ('PCC', 'Gene', (105, 108)) ('Type 1 vHL disease', 'Disease', 'MESH:D005776', (14, 32)) 69445 22429592 Patients with Type 2 vHL disease have missense mutations in the VHL gene, which are associated with development of RCC or PCC depending on the location of the missense mutation. ('associated with', 'Reg', (84, 99)) ('RCC', 'Phenotype', 'HP:0005584', (115, 118)) ('missense mutations', 'Var', (38, 56)) ('RCC', 'Disease', 'MESH:C538614', (115, 118)) ('PCC', 'Gene', (122, 125)) ('RCC', 'Disease', (115, 118)) ('VHL', 'Gene', (64, 67)) ('Patients', 'Species', '9606', (0, 8)) ('VHL', 'Gene', '7428', (64, 67)) ('Type 2 vHL disease', 'Disease', (14, 32)) ('Type 2 vHL disease', 'Disease', 'MESH:D005776', (14, 32)) ('PCC', 'Gene', '1421', (122, 125)) 69446 22429592 Specifically, mutations which disrupt the VHL-HIF protein interaction tend to lead to RCC development, whereas mutations in other parts of the VHL protein tend to lead to PCC development. ('RCC', 'Phenotype', 'HP:0005584', (86, 89)) ('mutations', 'Var', (111, 120)) ('mutations', 'Var', (14, 23)) ('VHL', 'Gene', '7428', (143, 146)) ('interaction', 'Interaction', (58, 69)) ('PCC', 'Gene', (171, 174)) ('lead to', 'Reg', (78, 85)) ('VHL-HIF', 'Disease', (42, 49)) ('RCC', 'Disease', 'MESH:C538614', (86, 89)) ('VHL', 'Gene', (143, 146)) ('VHL', 'Gene', (42, 45)) ('lead to', 'Reg', (163, 170)) ('VHL', 'Gene', '7428', (42, 45)) ('RCC', 'Disease', (86, 89)) ('PCC', 'Gene', '1421', (171, 174)) ('VHL-HIF', 'Disease', 'MESH:D006623', (42, 49)) 69448 22429592 Furthermore, missense mutations which affect the surface of the folded protein have a higher risk of PCC development than missense mutations which affect the deeper protein core. ('PCC', 'Gene', (101, 104)) ('PCC', 'Gene', '1421', (101, 104)) ('missense mutations', 'Var', (13, 31)) 69449 22429592 Neurofibromatosis Type 1 (NF1), also called von Recklinghausen's disease, is an autosomal dominant genetic disorder caused by inactivating mutations in the tumor suppressor gene, NF1. ('autosomal dominant genetic disorder', 'Disease', 'MESH:D030342', (80, 115)) ('autosomal dominant genetic disorder', 'Disease', (80, 115)) ('tumor', 'Disease', 'MESH:D009369', (156, 161)) ("von Recklinghausen's disease", 'Disease', (44, 72)) ('Neurofibromatosis Type 1', 'Gene', (0, 24)) ('NF1', 'Gene', (26, 29)) ('caused by', 'Reg', (116, 125)) ("von Recklinghausen's disease", 'Disease', 'MESH:C537392', (44, 72)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('NF1', 'Gene', '4763', (26, 29)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (0, 17)) ('tumor', 'Disease', (156, 161)) ('NF1', 'Gene', (179, 182)) ('Neurofibromatosis Type 1', 'Gene', '4763', (0, 24)) ('NF1', 'Gene', '4763', (179, 182)) ('inactivating mutations', 'Var', (126, 148)) 69452 22429592 When NF1 is mutated, there is constitutive activation of Ras and hence, the downstream MAPK, PI3K and mTOR pathways, leading to uncontrolled cellular growth and differentiation. ('differentiation', 'CPA', (161, 176)) ('MAPK', 'Pathway', (87, 91)) ('NF1', 'Gene', (5, 8)) ('activation', 'PosReg', (43, 53)) ('mutated', 'Var', (12, 19)) ('Ras', 'Pathway', (57, 60)) ('uncontrolled', 'MPA', (128, 140)) ('NF1', 'Gene', '4763', (5, 8)) ('mTOR', 'Gene', (102, 106)) ('mTOR', 'Gene', '2475', (102, 106)) ('PI3K', 'Pathway', (93, 97)) 69453 22429592 Up to 50% of NF1 patients have a de novo mutation, and there is variable penetrance and expressivity of the disease even in patients with the same mutation. ('NF1', 'Gene', (13, 16)) ('mutation', 'Var', (41, 49)) ('NF1', 'Gene', '4763', (13, 16)) ('patients', 'Species', '9606', (17, 25)) ('patients', 'Species', '9606', (124, 132)) 69461 22429592 When ligand binds to the RET receptor, or there is an activating mutation, a cell signaling cascade is triggered through the PI3 kinase pathway to regulate cell proliferation and apoptosis. ('activating', 'PosReg', (54, 64)) ('RET', 'Gene', '5979', (25, 28)) ('apoptosis', 'CPA', (179, 188)) ('RET', 'Gene', (25, 28)) ('PI3 kinase pathway', 'Pathway', (125, 143)) ('regulate', 'Reg', (147, 155)) ('binds', 'Interaction', (12, 17)) ('mutation', 'Var', (65, 73)) ('cell proliferation', 'CPA', (156, 174)) 69466 22429592 Almost all cases of MEN 2B are caused by a single missense mutation in codon 918 in exon 16 of RET (p.Met918Thr). ('RET', 'Gene', (95, 98)) ('p.Met918Thr', 'Var', (100, 111)) ('MEN 2B', 'Gene', (20, 26)) ('p.Met918Thr', 'Mutation', 'rs74799832', (100, 111)) ('RET', 'Gene', '5979', (95, 98)) ('MEN 2B', 'Gene', '5979', (20, 26)) ('caused by', 'Reg', (31, 40)) 69468 22429592 The diagnosis of FMTC is based on the absence of PCC and hyperparathyroidism in two or more generations within a family or by providing evidence of a RET mutation in a codon associated with susceptibility to only medullary thyroid cancer, including codons 768, 790, 804 and 891. ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (57, 76)) ('associated', 'Reg', (174, 184)) ('PCC', 'Gene', '1421', (49, 52)) ('RET', 'Gene', (150, 153)) ('thyroid cancer', 'Disease', 'MESH:D013964', (223, 237)) ('hyperparathyroidism', 'Disease', (57, 76)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (213, 237)) ('mutation in', 'Var', (154, 165)) ('PCC', 'Gene', (49, 52)) ('RET', 'Gene', '5979', (150, 153)) ('susceptibility', 'Reg', (190, 204)) ('cancer', 'Phenotype', 'HP:0002664', (231, 237)) ('hyperparathyroidism', 'Disease', 'MESH:D006961', (57, 76)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (223, 237)) ('thyroid cancer', 'Disease', (223, 237)) 69470 22429592 The risk of PCC in MEN 2 is associated with specific RET mutations, with the highest risk associated with mutations codons 634, 883, 918, and double mutations in codons 804 plus 805 or 806. ('MEN', 'Species', '9606', (19, 22)) ('RET', 'Gene', (53, 56)) ('mutations codons 634', 'Var', (106, 126)) ('PCC', 'Gene', '1421', (12, 15)) ('double mutations', 'Var', (142, 158)) ('RET', 'Gene', '5979', (53, 56)) ('883', 'Var', (128, 131)) ('918', 'Var', (133, 136)) ('PCC', 'Gene', (12, 15)) 69473 22429592 The age to begin screening with annual biochemistries is suggested based on risk of PCC by mutation as discussed above. ('PCC', 'Gene', (84, 87)) ('mutation', 'Var', (91, 99)) ('PCC', 'Gene', '1421', (84, 87)) 69474 22429592 Screening begins as early as age 8 for all MEN 2B patients and for MEN 2A patients with mutations in codons 630 or 634, and screening begins at age 20 for all other MEN 2A associated mutations. ('MEN 2A', 'Gene', '5979', (67, 73)) ('MEN 2A', 'Gene', (67, 73)) ('patients', 'Species', '9606', (50, 58)) ('patients', 'Species', '9606', (74, 82)) ('MEN 2B', 'Gene', '5979', (43, 49)) ('MEN 2A', 'Gene', '5979', (165, 171)) ('MEN 2A', 'Gene', (165, 171)) ('mutations in codons 630', 'Var', (88, 111)) ('MEN 2B', 'Gene', (43, 49)) 69475 22429592 Mutations in any one of the Succinate dehydrogenase (SDH) complex subunits can lead to PCC/PGL formation. ('SDH', 'Gene', (53, 56)) ('PCC/PGL', 'Gene', '1421', (87, 94)) ('Succinate dehydrogenase', 'Gene', '6390', (28, 51)) ('SDH', 'Gene', '6390', (53, 56)) ('Mutations', 'Var', (0, 9)) ('PCC/PGL', 'Gene', (87, 94)) ('Succinate dehydrogenase', 'Gene', (28, 51)) ('lead to', 'Reg', (79, 86)) 69479 22429592 Mutations in SDHD lead to PGL1. ('SDHD', 'Gene', (13, 17)) ('SDHD', 'Gene', '6392', (13, 17)) ('Mutations', 'Var', (0, 9)) ('lead', 'Reg', (18, 22)) ('PGL1', 'Gene', (26, 30)) 69482 22429592 Mutations in SDHD are inherited in an autosomal dominant fashion with a parent of origin effect. ('SDHD', 'Gene', (13, 17)) ('Mutations', 'Var', (0, 9)) ('SDHD', 'Gene', '6392', (13, 17)) 69486 22429592 Complicating the issue further, there have been a few reported cases of a maternally transmitted SDHD mutant allele. ('mutant', 'Var', (102, 108)) ('SDHD', 'Gene', (97, 101)) ('SDHD', 'Gene', '6392', (97, 101)) 69489 22429592 described a three generation kindred with PCC/PGL who share a maternally transmitted SDHD mutation found in both germline and tumor DNA analysis. ('SDHD', 'Gene', '6392', (85, 89)) ('tumor', 'Disease', 'MESH:D009369', (126, 131)) ('PCC/PGL', 'Gene', (42, 49)) ('SDHD', 'Gene', (85, 89)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('mutation', 'Var', (90, 98)) ('PCC/PGL', 'Gene', '1421', (42, 49)) ('tumor', 'Disease', (126, 131)) 69491 22429592 The penetrance for PCC/PGL in SDHD mutation carriers reaches 90% or higher by age 70. ('PCC/PGL', 'Gene', (19, 26)) ('penetrance', 'MPA', (4, 14)) ('PCC/PGL', 'Gene', '1421', (19, 26)) ('SDHD', 'Gene', '6392', (30, 34)) ('SDHD', 'Gene', (30, 34)) ('mutation', 'Var', (35, 43)) 69493 22429592 SDHD mutation carriers can develop adrenal based PCC, but usually this is one of multiple PCC/PGL tumors throughout the body. ('tumors', 'Phenotype', 'HP:0002664', (98, 104)) ('PCC', 'Gene', '1421', (49, 52)) ('develop', 'PosReg', (27, 34)) ('PGL tumors', 'Disease', (94, 104)) ('PCC', 'Gene', '1421', (90, 93)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('PCC', 'Gene', (49, 52)) ('SDHD', 'Gene', '6392', (0, 4)) ('PCC/PGL', 'Gene', (90, 97)) ('PCC', 'Gene', (90, 93)) ('PGL tumors', 'Disease', 'MESH:D010235', (94, 104)) ('SDHD', 'Gene', (0, 4)) ('mutation', 'Var', (5, 13)) ('PCC/PGL', 'Gene', '1421', (90, 97)) 69494 22429592 The associated risk of malignancy is less than 5% for SDHD mutation carriers. ('SDHD', 'Gene', (54, 58)) ('SDHD', 'Gene', '6392', (54, 58)) ('mutation', 'Var', (59, 67)) ('malignancy', 'Disease', 'MESH:D009369', (23, 33)) ('malignancy', 'Disease', (23, 33)) 69497 22429592 One common mutation, c.232G>A; p.Gly78Arg, was identified in two distinct families with head and neck PGL (one family with Dutch decent and one with Spanish decent). ('c.232G>A', 'Mutation', 'rs113560320', (21, 29)) ('p.Gly78Arg', 'Var', (31, 41)) ('c.232G>A; p.Gly78Arg', 'Var', (21, 41)) ('p.Gly78Arg', 'Mutation', 'rs113560320', (31, 41)) 69500 22429592 Out of 57 family members, 24 had an SDHAF2 mutation; and 91% of affected individuals had more than one head and neck PGL. ('mutation', 'Var', (43, 51)) ('SDHAF2', 'Gene', (36, 42)) ('SDHAF2', 'Gene', '54949', (36, 42)) ('more than one head', 'Phenotype', 'HP:0000256', (89, 107)) 69502 22429592 These data are based on small numbers of patients but suggest that individuals with multiple head and neck PGL who are negative for other SDH gene mutations, should be tested for SDHAF2 mutations. ('SDH', 'Gene', '6390', (179, 182)) ('mutations', 'Var', (186, 195)) ('SDHAF2', 'Gene', '54949', (179, 185)) ('SDH', 'Gene', '6390', (138, 141)) ('SDHAF2', 'Gene', (179, 185)) ('SDH', 'Gene', (179, 182)) ('tested', 'Reg', (168, 174)) ('patients', 'Species', '9606', (41, 49)) ('SDH', 'Gene', (138, 141)) 69503 22429592 However, even in this subset, mutations in SDHAF2 are quite rare as one study found no mutations in 201 patients with head and neck PGL who had already been screened, and were negative, for mutations in SDHD, SDHC, or SDHB. ('SDHC', 'Gene', (209, 213)) ('SDHD', 'Gene', (203, 207)) ('SDHB', 'Gene', '6390', (218, 222)) ('SDHC', 'Gene', '6391', (209, 213)) ('mutations', 'Var', (190, 199)) ('SDHB', 'Gene', (218, 222)) ('mutations', 'Var', (30, 39)) ('SDHAF2', 'Gene', '54949', (43, 49)) ('SDHAF2', 'Gene', (43, 49)) ('SDHD', 'Gene', '6392', (203, 207)) ('patients', 'Species', '9606', (104, 112)) 69504 22429592 Mutations in SDHC are responsible for PGL3 syndrome, which is inherited in an autosomal dominant manner with no parent of origin effect. ('SDHC', 'Gene', (13, 17)) ('responsible', 'Reg', (22, 33)) ('PGL3 syndrome', 'Disease', 'MESH:C565335', (38, 51)) ('SDHC', 'Gene', '6391', (13, 17)) ('Mutations', 'Var', (0, 9)) ('PGL3 syndrome', 'Disease', (38, 51)) 69506 22429592 Mutations in SDHC are less common compared to those in SDHD and SDHB, and occur in only 0-6.6% of PCC/PGL patients. ('SDHC', 'Gene', (13, 17)) ('PCC/PGL', 'Gene', (98, 105)) ('SDHB', 'Gene', '6390', (64, 68)) ('SDHC', 'Gene', '6391', (13, 17)) ('SDHB', 'Gene', (64, 68)) ('PCC/PGL', 'Gene', '1421', (98, 105)) ('Mutations', 'Var', (0, 9)) ('patients', 'Species', '9606', (106, 114)) ('SDHD', 'Gene', '6392', (55, 59)) ('SDHD', 'Gene', (55, 59)) 69507 22429592 Patients with SDHC mutations tend to have solitary head and neck PGL, but rare extra adrenal PGLs and even PCC have been described. ('PGLs', 'Gene', (93, 97)) ('PCC', 'Gene', '1421', (107, 110)) ('SDHC', 'Gene', (14, 18)) ('mutations', 'Var', (19, 28)) ('SDHC', 'Gene', '6391', (14, 18)) ('Patients', 'Species', '9606', (0, 8)) ('PCC', 'Gene', (107, 110)) ('PGLs', 'Gene', '25796', (93, 97)) 69508 22429592 Mutations in SDHB are responsible for PGL4 syndrome, conferring tumor susceptibility with an autosomal dominant inheritance. ('responsible', 'Reg', (22, 33)) ('SDHB', 'Gene', '6390', (13, 17)) ('PGL4 syndrome', 'Disease', (38, 51)) ('PGL4 syndrome', 'Disease', 'MESH:D010235', (38, 51)) ('conferring tumor', 'Disease', 'MESH:D009369', (53, 69)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (13, 17)) ('conferring tumor', 'Disease', (53, 69)) ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) 69511 22429592 Although the precise mechanism for tumorigenesis is unknown, mutations in SDHB are associated with dysregulation of the hypoxia pathway including over-expression of HIFalpha and hypoxia inducible gene products such as VEGF. ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('dysregulation of the hypoxia', 'Disease', 'MESH:D000860', (99, 127)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('HIFalpha', 'Protein', (165, 173)) ('SDHB', 'Gene', '6390', (74, 78)) ('SDHB', 'Gene', (74, 78)) ('hypoxia', 'Disease', (178, 185)) ('hypoxia', 'Disease', (120, 127)) ('mutations', 'Var', (61, 70)) ('VEGF', 'Gene', (218, 222)) ('over-expression', 'PosReg', (146, 161)) ('associated', 'Reg', (83, 93)) ('tumor', 'Disease', (35, 40)) ('hypoxia', 'Disease', 'MESH:D000860', (178, 185)) ('dysregulation of the hypoxia', 'Disease', (99, 127)) ('hypoxia', 'Disease', 'MESH:D000860', (120, 127)) ('VEGF', 'Gene', '7422', (218, 222)) 69512 22429592 Mutations range from point mutations and small insertions and deletions to large deletions or duplications of the SDHB gene loci (reviewed in). ('SDHB', 'Gene', '6390', (114, 118)) ('SDHB', 'Gene', (114, 118)) ('point mutations', 'Var', (21, 36)) ('deletions', 'Var', (62, 71)) ('insertions', 'Var', (47, 57)) ('duplications', 'Var', (94, 106)) 69514 22429592 The largest study to date, including 295 patients with SDHB mutations, found that the lifetime risk by age 60 of a SDHB mutation carrier developing a non-head and neck PGL was 52% with a mean age of diagnosis of 27 years old; the risk of developing a head and neck PGL was 29% with a mean age of diagnosis of 42 years old. ('SDHB', 'Gene', (55, 59)) ('SDHB', 'Gene', '6390', (115, 119)) ('SDHB', 'Gene', (115, 119)) ('mutation', 'Var', (120, 128)) ('patients', 'Species', '9606', (41, 49)) ('SDHB', 'Gene', '6390', (55, 59)) ('mutations', 'Var', (60, 69)) 69515 22429592 SDHB mutation associated tumors carry a substantial risk of malignancy which has been estimated to range from 31-71%. ('malignancy', 'Disease', (60, 70)) ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('tumors', 'Disease', (25, 31)) ('tumors', 'Phenotype', 'HP:0002664', (25, 31)) ('tumors', 'Disease', 'MESH:D009369', (25, 31)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) ('malignancy', 'Disease', 'MESH:D009369', (60, 70)) ('mutation', 'Var', (5, 13)) 69519 22429592 Interestingly, mutations in SDHB may confer susceptibility to other cancers, as carriers of SDHB mutations have an increased incidence of gastrointestinal stromal tumors (GIST), papillary thyroid cancer, neuroblastoma and various types of renal cell carcinoma, including clear cell and papillary RCC. ('mutations', 'Var', (97, 106)) ('cancer', 'Phenotype', 'HP:0002664', (68, 74)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (178, 202)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (239, 259)) ('RCC', 'Phenotype', 'HP:0005584', (296, 299)) ('RCC', 'Disease', (296, 299)) ('GIST', 'Disease', (171, 175)) ('SDHB', 'Gene', '6390', (92, 96)) ('gastrointestinal stromal tumors', 'Disease', (138, 169)) ('GIST', 'Phenotype', 'HP:0100723', (171, 175)) ('mutations', 'Var', (15, 24)) ('papillary thyroid cancer', 'Disease', 'MESH:D000077273', (178, 202)) ('cancers', 'Disease', 'MESH:D009369', (68, 75)) ('tumors', 'Phenotype', 'HP:0002664', (163, 169)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (188, 202)) ('SDHB', 'Gene', '6390', (28, 32)) ('RCC', 'Disease', 'MESH:C538614', (296, 299)) ('GIST', 'Disease', 'MESH:D046152', (171, 175)) ('neuroblastoma', 'Disease', (204, 217)) ('renal cell carcinoma', 'Disease', (239, 259)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (239, 259)) ('SDHB', 'Gene', (92, 96)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (204, 217)) ('clear cell', 'Disease', (271, 281)) ('SDHB', 'Gene', (28, 32)) ('cancer', 'Phenotype', 'HP:0002664', (196, 202)) ('neuroblastoma', 'Disease', 'MESH:D009447', (204, 217)) ('papillary thyroid cancer', 'Disease', (178, 202)) ('cancers', 'Phenotype', 'HP:0002664', (68, 75)) ('cancers', 'Disease', (68, 75)) ('carcinoma', 'Phenotype', 'HP:0030731', (250, 259)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (138, 169)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (138, 169)) 69520 22429592 A similar phenomenon was noted with BRCA1 and BRCA2 mutations, which were initially identified as associated with breast and ovarian cancers, but are now known to confer increased risks for multiple cancer types. ('mutations', 'Var', (52, 61)) ('cancer', 'Phenotype', 'HP:0002664', (199, 205)) ('BRCA1', 'Gene', (36, 41)) ('BRCA2', 'Gene', (46, 51)) ('cancer', 'Disease', 'MESH:D009369', (133, 139)) ('cancers', 'Phenotype', 'HP:0002664', (133, 140)) ('BRCA2', 'Gene', '675', (46, 51)) ('cancer', 'Disease', (133, 139)) ('cancer', 'Disease', 'MESH:D009369', (199, 205)) ('breast and ovarian cancers', 'Disease', 'MESH:D010051', (114, 140)) ('cancer', 'Disease', (199, 205)) ('BRCA1', 'Gene', '672', (36, 41)) ('ovarian cancers', 'Phenotype', 'HP:0100615', (125, 140)) ('associated', 'Reg', (98, 108)) ('cancer', 'Phenotype', 'HP:0002664', (133, 139)) 69521 22429592 The risk of associated RCC is reported as high as 14% in one large study of 295 SDHB mutation carriers compared to the 1.49% lifetime risk in the general population. ('SDHB', 'Gene', (80, 84)) ('RCC', 'Phenotype', 'HP:0005584', (23, 26)) ('mutation', 'Var', (85, 93)) ('RCC', 'Disease', 'MESH:C538614', (23, 26)) ('RCC', 'Disease', (23, 26)) ('SDHB', 'Gene', '6390', (80, 84)) 69522 22429592 Of note, mutations in SDHB (and also in SDHD and SDHC) have been associated with Carney-Stratakis syndrome (GIST and PGL), but have not yet been found in Carney triad (extra adrenal PGL, GIST and pulmonary chondroma), suggesting the triad syndrome may be the result of a yet unidentified genetic cause. ('SDHD', 'Gene', '6392', (40, 44)) ('pulmonary chondroma', 'Phenotype', 'HP:0031474', (196, 215)) ('GIST', 'Disease', (108, 112)) ('mutations', 'Var', (9, 18)) ('associated', 'Reg', (65, 75)) ('GIST', 'Disease', (187, 191)) ('SDHC', 'Gene', '6391', (49, 53)) ('GIST', 'Phenotype', 'HP:0100723', (108, 112)) ('Carney-Stratakis syndrome', 'Disease', (81, 106)) ('GIST', 'Phenotype', 'HP:0100723', (187, 191)) ('Carney triad', 'Disease', (154, 166)) ('GIST', 'Disease', 'MESH:D046152', (108, 112)) ('SDHD', 'Gene', (40, 44)) ('triad syndrome', 'Disease', (233, 247)) ('SDHB', 'Gene', '6390', (22, 26)) ('GIST', 'Disease', 'MESH:D046152', (187, 191)) ('pulmonary chondroma', 'Disease', 'MESH:D002812', (196, 215)) ('pulmonary chondroma', 'Disease', (196, 215)) ('triad syndrome', 'Disease', 'MESH:C565803', (233, 247)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (81, 106)) ('SDHC', 'Gene', (49, 53)) ('SDHB', 'Gene', (22, 26)) 69523 22429592 More research is needed to define the risk of other cancers associated with SDHB mutations. ('SDHB', 'Gene', '6390', (76, 80)) ('cancer', 'Phenotype', 'HP:0002664', (52, 58)) ('cancers', 'Disease', (52, 59)) ('SDHB', 'Gene', (76, 80)) ('mutations', 'Var', (81, 90)) ('cancers', 'Phenotype', 'HP:0002664', (52, 59)) ('cancers', 'Disease', 'MESH:D009369', (52, 59)) 69525 22429592 Bilallelic mutations in SDHA lead to Leigh's syndrome, characterized by an early onset neurodegenerative disorder, and mutations can also cause a form of cardiomyopathy. ('SDHA', 'Gene', (24, 28)) ('lead to', 'Reg', (29, 36)) ('cardiomyopathy', 'Disease', (154, 168)) ('Bilallelic mutations', 'Var', (0, 20)) ('neurodegenerative disorder', 'Disease', 'MESH:D019636', (87, 113)) ('neurodegenerative disorder', 'Disease', (87, 113)) ('cause', 'Reg', (138, 143)) ("Leigh's syndrome", 'Disease', (37, 53)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (154, 168)) ('SDHA', 'Gene', '6389', (24, 28)) ('neurodegenerative disorder', 'Phenotype', 'HP:0002180', (87, 113)) ('mutations', 'Var', (119, 128)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (154, 168)) ("Leigh's syndrome", 'Disease', 'MESH:D007888', (37, 53)) 69526 22429592 Mutations in this subunit of complex II were not identified in patients with PCC/PGL until recently. ('Mutations', 'Var', (0, 9)) ('PCC/PGL', 'Gene', (77, 84)) ('PCC/PGL', 'Gene', '1421', (77, 84)) ('patients', 'Species', '9606', (63, 71)) 69527 22429592 Subsequently, the same group published a series demonstrating that SDHA mutations represented approximately three percent of germline mutations in apparently sporadic PCC/PGL. ('mutations', 'Var', (72, 81)) ('PCC/PGL', 'Gene', (167, 174)) ('SDHA', 'Gene', '6389', (67, 71)) ('PCC/PGL', 'Gene', '1421', (167, 174)) ('SDHA', 'Gene', (67, 71)) 69529 22429592 Genetic testing for SDHA mutations is complicated by the existence of two known pseudogenes on chromosomes 3 and 5; and therefore, it currently is not offered by clinical genetic testing laboratories. ('SDHA', 'Gene', (20, 24)) ('mutations', 'Var', (25, 34)) ('SDHA', 'Gene', '6389', (20, 24)) 69534 22429592 The penetrance of mutations in TMEM127 is still not well defined. ('TMEM127', 'Gene', '55654', (31, 38)) ('TMEM127', 'Gene', (31, 38)) ('mutations', 'Var', (18, 27)) 69535 22429592 Mutations confer disease susceptibility in an autosomal dominant fashion with LOH being a common second hit in tumors. ('tumor', 'Phenotype', 'HP:0002664', (111, 116)) ('tumors', 'Phenotype', 'HP:0002664', (111, 117)) ('tumors', 'Disease', 'MESH:D009369', (111, 117)) ('tumors', 'Disease', (111, 117)) ('Mutations', 'Var', (0, 9)) 69536 22429592 Initial studies suggested that all mutations led to adrenal based PCC, typically unilateral and in patients with no prior family history. ('led to', 'Reg', (45, 51)) ('PCC', 'Gene', '1421', (66, 69)) ('patients', 'Species', '9606', (99, 107)) ('PCC', 'Gene', (66, 69)) ('mutations', 'Var', (35, 44)) 69537 22429592 However, more recently, bilateral adrenal PCC, extra adrenal and head and neck PGL have been described in patients with germline mutations in TMEM127, so more data are needed to define the associated clinical syndrome. ('TMEM127', 'Gene', (142, 149)) ('described', 'Reg', (93, 102)) ('PCC', 'Gene', '1421', (42, 45)) ('TMEM127', 'Gene', '55654', (142, 149)) ('germline mutations', 'Var', (120, 138)) ('extra', 'Disease', (47, 52)) ('PCC', 'Gene', (42, 45)) ('patients', 'Species', '9606', (106, 114)) 69539 22429592 Most recently inherited mutations in MAX were identified as associated with PCC/PGL susceptibility. ('PCC/PGL', 'Gene', '1421', (76, 83)) ('MAX', 'Gene', (37, 40)) ('mutations', 'Var', (24, 33)) ('PCC/PGL', 'Gene', (76, 83)) ('associated', 'Reg', (60, 70)) 69541 22429592 Tumors from these patients clustered on expression array analysis with tumors having known mutations in RET, NF1 and TMEM127. ('TMEM127', 'Gene', (117, 124)) ('RET', 'Gene', '5979', (104, 107)) ('TMEM127', 'Gene', '55654', (117, 124)) ('NF1', 'Gene', (109, 112)) ('NF1', 'Gene', '4763', (109, 112)) ('Tumors', 'Disease', (0, 6)) ('tumors', 'Disease', (71, 77)) ('mutations', 'Var', (91, 100)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('patients', 'Species', '9606', (18, 26)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('RET', 'Gene', (104, 107)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('tumors', 'Disease', 'MESH:D009369', (71, 77)) 69545 22429592 found bilateral adrenal PCC in eight of twelve cases studied with MAX mutations; moreover, three of eight probands had malignant PCC. ('PCC', 'Gene', (129, 132)) ('mutations', 'Var', (70, 79)) ('PCC', 'Gene', '1421', (24, 27)) ('PCC', 'Gene', (24, 27)) ('PCC', 'Gene', '1421', (129, 132)) 69546 22429592 Future research is needed to define the penetrance of disease associated with this mutation and the true risk of malignancy. ('mutation', 'Var', (83, 91)) ('malignancy', 'Disease', (113, 123)) ('malignancy', 'Disease', 'MESH:D009369', (113, 123)) 69553 22429592 Biochemical profile for SDHB mutated tumors is similar to that of vHL patients with a normetanephrine predominance, but they can also have high methoxytyramine excretion (the o-methylated metabolite of dopamine) in addition to, or as the only elevated biochemical marker. ('tumors', 'Phenotype', 'HP:0002664', (37, 43)) ('patients', 'Species', '9606', (70, 78)) ('high', 'PosReg', (139, 143)) ('tumors', 'Disease', 'MESH:D009369', (37, 43)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (144, 159)) ('SDHB', 'Gene', '6390', (24, 28)) ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('mutated', 'Var', (29, 36)) ('normetanephrine', 'Chemical', 'MESH:D009647', (86, 101)) ('tumors', 'Disease', (37, 43)) ('SDHB', 'Gene', (24, 28)) ('vHL', 'Gene', (66, 69)) ('vHL', 'Gene', '7428', (66, 69)) ('methoxytyramine excretion', 'MPA', (144, 169)) ('dopamine', 'Chemical', 'MESH:D004298', (202, 210)) 69554 22429592 Tumors associated with SDHC, SDHD, and SDHAF2 mutations, often located in the head and neck, are derived from parasympathetic ganglia which usually do not secrete catecholamines. ('SDHD', 'Gene', '6392', (29, 33)) ('SDHC', 'Gene', '6391', (23, 27)) ('mutations', 'Var', (46, 55)) ('SDHD', 'Gene', (29, 33)) ('Tumors', 'Disease', (0, 6)) ('SDHAF2', 'Gene', '54949', (39, 45)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('SDHAF2', 'Gene', (39, 45)) ('SDHC', 'Gene', (23, 27)) ('catecholamines', 'Chemical', 'MESH:D002395', (163, 177)) 69556 22429592 Finally, the biochemical profiles of tumors associated with mutations in TMEM127, SDHA, and MAX have not been well established. ('tumors', 'Phenotype', 'HP:0002664', (37, 43)) ('TMEM127', 'Gene', (73, 80)) ('TMEM127', 'Gene', '55654', (73, 80)) ('SDHA', 'Gene', '6389', (82, 86)) ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('tumors', 'Disease', (37, 43)) ('mutations', 'Var', (60, 69)) ('SDHA', 'Gene', (82, 86)) ('tumors', 'Disease', 'MESH:D009369', (37, 43)) 69565 22429592 showed that methoxytyramine also is highly correlated with the presence of metastases in patients with or without SDHB mutations, and therefore, has high utility in monitoring disease. ('SDHB', 'Gene', '6390', (114, 118)) ('SDHB', 'Gene', (114, 118)) ('correlated', 'Reg', (43, 53)) ('metastases', 'Disease', (75, 85)) ('methoxytyramine', 'MPA', (12, 27)) ('patients', 'Species', '9606', (89, 97)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (12, 27)) ('mutations', 'Var', (119, 128)) ('metastases', 'Disease', 'MESH:D009362', (75, 85)) 69567 22429592 Unaffected carriers of SDHB, SDHC, SDHD, and SDHAF2 mutations who have normal plasma metanephrines and catecholamine results, should have screening imaging with MRI (or CT scan) of the thorax, abdomen and pelvis and head and neck every two years. ('mutations', 'Var', (52, 61)) ('SDHD', 'Gene', (35, 39)) ('SDHD', 'Gene', '6392', (35, 39)) ('metanephrines', 'Chemical', 'MESH:D008676', (85, 98)) ('SDHAF2', 'Gene', '54949', (45, 51)) ('SDHB', 'Gene', '6390', (23, 27)) ('SDHAF2', 'Gene', (45, 51)) ('catecholamine', 'Chemical', 'MESH:D002395', (103, 116)) ('SDHB', 'Gene', (23, 27)) ('SDHC', 'Gene', (29, 33)) ('SDHC', 'Gene', '6391', (29, 33)) 69569 22429592 PCC/PGLs, even malignant and multi-focal tumors, have been reported in children as young as five to eight years old in association with SDHB and SDHD mutations; therefore, screening for unaffected mutation carriers should begin between ages five and ten. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('SDHD', 'Gene', (145, 149)) ('multi-focal tumors', 'Disease', (29, 47)) ('tumors', 'Phenotype', 'HP:0002664', (41, 47)) ('PCC/PGL', 'Gene', (0, 7)) ('PGLs', 'Gene', '25796', (4, 8)) ('SDHB', 'Gene', '6390', (136, 140)) ('mutations', 'Var', (150, 159)) ('SDHB', 'Gene', (136, 140)) ('children', 'Species', '9606', (71, 79)) ('multi-focal tumors', 'Disease', 'MESH:D015140', (29, 47)) ('PCC/PGL', 'Gene', '1421', (0, 7)) ('PGLs', 'Gene', (4, 8)) ('SDHD', 'Gene', '6392', (145, 149)) 69571 22429592 As tumors associated with mutations in SDHB have a higher chance of malignant progression, more frequent follow-up after diagnosis of an initial tumor may be warranted. ('tumors', 'Phenotype', 'HP:0002664', (3, 9)) ('tumor', 'Disease', 'MESH:D009369', (145, 150)) ('tumor', 'Disease', (3, 8)) ('SDHB', 'Gene', '6390', (39, 43)) ('tumors', 'Disease', (3, 9)) ('malignant progression', 'CPA', (68, 89)) ('tumors', 'Disease', 'MESH:D009369', (3, 9)) ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('SDHB', 'Gene', (39, 43)) ('mutations', 'Var', (26, 35)) ('tumor', 'Disease', (145, 150)) ('tumor', 'Disease', 'MESH:D009369', (3, 8)) ('tumor', 'Phenotype', 'HP:0002664', (3, 8)) 69574 22429592 Several studies have screened specific candidate genes for somatic mutations in PCC/PGL, but overall, few somatic mutations have been identified. ('PCC/PGL', 'Gene', '1421', (80, 87)) ('PCC/PGL', 'Gene', (80, 87)) ('mutations', 'Var', (67, 76)) 69579 22429592 Interestingly, mice with heterozygous Pten mutations, or conditional knockouts, develop malignant PCC/PGL. ('PCC/PGL', 'Gene', (98, 105)) ('PCC/PGL', 'Gene', '1421', (98, 105)) ('mutations', 'Var', (43, 52)) ('Pten', 'Gene', (38, 42)) ('develop', 'PosReg', (80, 87)) ('malignant', 'CPA', (88, 97)) ('Pten', 'Gene', '19211', (38, 42)) ('mice', 'Species', '10090', (15, 19)) 69585 22429592 The data have shown expected results of increased expression of hypoxia related genes in tumors with germline mutations in VHL or SDH genes. ('tumors', 'Disease', (89, 95)) ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('mutations', 'Var', (110, 119)) ('hypoxia', 'Disease', (64, 71)) ('SDH', 'Gene', (130, 133)) ('hypoxia', 'Disease', 'MESH:D000860', (64, 71)) ('tumors', 'Disease', 'MESH:D009369', (89, 95)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('VHL', 'Gene', (123, 126)) ('VHL', 'Gene', '7428', (123, 126)) ('increased', 'PosReg', (40, 49)) ('SDH', 'Gene', '6390', (130, 133)) ('expression', 'MPA', (50, 60)) 69586 22429592 examined 202 PCC/PGL for expression array analysis and the results were consistent with previous data clustering together the RET/NF1/TMEM127 mutated tumors separately from VHL/SDHx mutated tumors based on upregulation of MAPK signaling and neuroendocrine differentiation gene expression vs. upregulation of genes involved in angiogenesis and hypoxia, respectively. ('VHL', 'Gene', (173, 176)) ('tumors', 'Phenotype', 'HP:0002664', (150, 156)) ('hypoxia', 'Disease', (343, 350)) ('mutated', 'Var', (142, 149)) ('tumor', 'Phenotype', 'HP:0002664', (190, 195)) ('TMEM127', 'Gene', (134, 141)) ('tumor', 'Phenotype', 'HP:0002664', (150, 155)) ('MAPK signaling', 'Pathway', (222, 236)) ('upregulation', 'PosReg', (206, 218)) ('tumors', 'Disease', (190, 196)) ('tumors', 'Disease', (150, 156)) ('VHL', 'Gene', '7428', (173, 176)) ('hypoxia', 'Disease', 'MESH:D000860', (343, 350)) ('PCC/PGL', 'Gene', (13, 20)) ('TMEM127', 'Gene', '55654', (134, 141)) ('tumors', 'Disease', 'MESH:D009369', (190, 196)) ('RET', 'Gene', '5979', (126, 129)) ('tumors', 'Disease', 'MESH:D009369', (150, 156)) ('upregulation', 'PosReg', (292, 304)) ('NF1', 'Gene', '4763', (130, 133)) ('neuroendocrine differentiation gene', 'Gene', (241, 276)) ('SDHx', 'Chemical', '-', (177, 181)) ('RET', 'Gene', (126, 129)) ('NF1', 'Gene', (130, 133)) ('tumors', 'Phenotype', 'HP:0002664', (190, 196)) ('PCC/PGL', 'Gene', '1421', (13, 20)) 69590 22429592 This suggestion is based on data showing that at least a third of patients with apparently sporadic PCC/PGL and over half of patients with head and neck PGL, have an identified germline mutation in one of the known susceptibility genes. ('PCC/PGL', 'Gene', '1421', (100, 107)) ('germline mutation', 'Var', (177, 194)) ('PCC/PGL', 'Gene', (100, 107)) ('patients', 'Species', '9606', (66, 74)) ('patients', 'Species', '9606', (125, 133)) 69591 22429592 In addition, patients with only adrenal PCC have up to a 21% mutation detection rate, and the rate can be as high as 59% if diagnosed by 18 years of age. ('PCC', 'Gene', (40, 43)) ('mutation', 'Var', (61, 69)) ('PCC', 'Gene', '1421', (40, 43)) ('patients', 'Species', '9606', (13, 21)) 69593 22429592 Ten known susceptibility genes have been identified to date, making PCC/PGL more commonly associated with an inherited mutation than any other cancer type. ('cancer', 'Phenotype', 'HP:0002664', (143, 149)) ('mutation', 'Var', (119, 127)) ('PCC/PGL', 'Gene', (68, 75)) ('associated', 'Reg', (90, 100)) ('PCC/PGL', 'Gene', '1421', (68, 75)) ('cancer', 'Disease', (143, 149)) ('cancer', 'Disease', 'MESH:D009369', (143, 149)) 69596 21755051 Functional Imaging of Pheochromocytoma with 68Ga-DOTATOC and 68C-HED in a Genetically Defined Rat Model of Multiple Endocrine Neoplasia Rats affected by the MENX multitumor syndrome develop pheochromocytoma (100%). ('HED', 'Gene', (65, 68)) ('pheochromocytoma', 'Disease', (190, 206)) ('Rat', 'Species', '10116', (136, 139)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (190, 206)) ('develop', 'Reg', (182, 189)) ('Endocrine Neoplasia', 'Phenotype', 'HP:0100568', (116, 135)) ('Rat', 'Species', '10116', (94, 97)) ('Rats', 'Species', '10116', (136, 140)) ('HED', 'Gene', '1896', (65, 68)) ('68Ga-DOTATOC', 'Var', (44, 56)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (22, 38)) ('Multiple Endocrine Neoplasia', 'Disease', (107, 135)) ('Neoplasia', 'Phenotype', 'HP:0002664', (126, 135)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (190, 206)) ('Pheochromocytoma', 'Disease', (22, 38)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (22, 38)) ('tumor', 'Phenotype', 'HP:0002664', (167, 172)) ('multitumor syndrome', 'Disease', 'MESH:D013577', (162, 181)) ('multitumor syndrome', 'Disease', (162, 181)) ('Multiple Endocrine Neoplasia', 'Disease', 'MESH:D009377', (107, 135)) 69599 21755051 We performed positron emission tomography (PET) to determine whether rat pheochromocytomas are detected by tracers used in clinical practice, such as 68Ga-DOTATOC (somatostatin analogue) or 11C-Hydroxyephedrine (HED), a norepinephrine analogue. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (73, 89)) ('HED', 'Gene', (212, 215)) ('68Ga-DOTATOC', 'Chemical', 'MESH:C499142', (150, 162)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (73, 90)) ('11C-Hydroxyephedrine', 'Chemical', '-', (190, 210)) ('pheochromocytomas', 'Disease', (73, 90)) ('11C-Hydroxyephedrine', 'Var', (190, 210)) ('norepinephrine', 'Chemical', 'MESH:D009638', (220, 234)) ('rat', 'Species', '10116', (69, 72)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (73, 90)) ('HED', 'Gene', '1896', (212, 215)) 69614 21755051 However, although it often achieves successful palliation, 131I-MIBG therapy has limited effect on tumor control and it is generally not curative. ('tumor', 'Disease', (99, 104)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (59, 68)) ('rat', 'Species', '10116', (139, 142)) ('131I-MIBG', 'Var', (59, 68)) ('tumor', 'Disease', 'MESH:D009369', (99, 104)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) 69626 21755051 Affected rats are homozygous for a germline frameshift mutation in the Cdkn1b gene (p27Kip1) and are hereafter indicated as affected or mut/mut. ('Cdkn1b', 'Gene', (71, 77)) ('rats', 'Species', '10116', (9, 13)) ('Cdkn1b', 'Gene', '83571', (71, 77)) ('p27Kip1', 'Var', (84, 91)) 69653 21755051 Comparisons between the two groups of animals showed elevated uptake of 11C-HED in all mutant rats compared to the controls: the adrenal to liver ratios in mutant rats was 1.6 (+-0.5) but was only 0.7 (+-0.1) in normal rats (P = .002) (Table 1). ('rat', 'Species', '10116', (163, 166)) ('rat', 'Species', '10116', (94, 97)) ('rat', 'Species', '10116', (146, 149)) ('elevated', 'PosReg', (53, 61)) ('rats', 'Species', '10116', (219, 223)) ('adrenal', 'MPA', (129, 136)) ('HED', 'Gene', '1896', (76, 79)) ('11C', 'Chemical', 'MESH:C000615233', (72, 75)) ('HED', 'Gene', (76, 79)) ('mutant', 'Var', (87, 93)) ('mutant', 'Var', (156, 162)) ('rats', 'Species', '10116', (163, 167)) ('rats', 'Species', '10116', (94, 98)) ('uptake', 'MPA', (62, 68)) ('rat', 'Species', '10116', (219, 222)) 69654 21755051 Also 68Ga-DOTATOC uptake was elevated in the adrenal glands of mutant rats compared to the normal controls, although to a lesser extent compared to 11C-HED uptake. ('elevated', 'PosReg', (29, 37)) ('68Ga-DOTATOC uptake', 'MPA', (5, 24)) ('mutant', 'Var', (63, 69)) ('HED', 'Gene', '1896', (152, 155)) ('HED', 'Gene', (152, 155)) ('11C', 'Chemical', 'MESH:C000615233', (148, 151)) ('rats', 'Species', '10116', (70, 74)) ('68Ga-DOTATOC', 'Chemical', 'MESH:C499142', (5, 17)) 69656 21755051 Affected rats have a germline mutation in Cdkn1b that makes the encoded protein highly unstable and as a consequence they have extremely reduced levels, or complete loss, of p27Kip1 in their tissues, as previously reported. ('p27Kip1', 'Var', (174, 181)) ('levels', 'MPA', (145, 151)) ('Cdkn1b', 'Gene', (42, 48)) ('Cdkn1b', 'Gene', '83571', (42, 48)) ('unstable', 'MPA', (87, 95)) ('loss', 'NegReg', (165, 169)) ('rats', 'Species', '10116', (9, 13)) ('reduced', 'NegReg', (137, 144)) 69657 21755051 The results confirmed the low level of p27Kip1 expression in the adrenal medullary cells of the mutant rats compared to those of wild-type control rats (Figure 1). ('p27Kip1', 'Var', (39, 46)) ('rats', 'Species', '10116', (103, 107)) ('mutant', 'Var', (96, 102)) ('rats', 'Species', '10116', (147, 151)) 69658 21755051 In humans, several normal and neoplastic tissues show an inverse relationship between p27Kip1 expression and the proliferation activity of the tumor cells. ('tumor', 'Disease', (143, 148)) ('p27Kip1', 'Var', (86, 93)) ('inverse', 'NegReg', (57, 64)) ('humans', 'Species', '9606', (3, 9)) ('expression', 'MPA', (94, 104)) ('rat', 'Species', '10116', (120, 123)) ('tumor', 'Disease', 'MESH:D009369', (143, 148)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) 69660 21755051 Therefore, we determined the proliferative index of the rat tumor cells by immunohistochemical staining for the proliferation marker Ki67 (MIB-5 antigen) to determine whether the low p27Kip1 levels had an effect on cell proliferation. ('rat', 'Species', '10116', (227, 230)) ('cell proliferation', 'CPA', (215, 233)) ('rat', 'Species', '10116', (56, 59)) ('rat', 'Species', '10116', (36, 39)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('rat', 'Species', '10116', (119, 122)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('p27Kip1', 'Var', (183, 190)) ('tumor', 'Disease', (60, 65)) ('Ki67', 'Chemical', '-', (133, 137)) 69676 21755051 Quantitative RT-PCR showed that the expression of the Slc6a2 gene (norepinephrine transporter) is comparable between mutant and wild-type animals. ('Slc6a2', 'Gene', '83511', (54, 60)) ('mutant', 'Var', (117, 123)) ('norepinephrine transporter', 'Gene', '83511', (67, 93)) ('norepinephrine transporter', 'Gene', (67, 93)) ('Slc6a2', 'Gene', (54, 60)) 69679 21755051 Of course we cannot exclude that differences might exist between mutant and control rats in the final amount of norepinephrine transporter protein or in its activity. ('mutant', 'Var', (65, 71)) ('norepinephrine transporter', 'Gene', '83511', (112, 138)) ('norepinephrine transporter', 'Gene', (112, 138)) ('rats', 'Species', '10116', (84, 88)) ('activity', 'MPA', (157, 165)) 69681 21755051 This is in agreement with the increased expression level of the Sstr2 gene in mutant compared to normal rat adrenals. ('Sstr2', 'Gene', (64, 69)) ('expression level', 'MPA', (40, 56)) ('Sstr2', 'Gene', '54305', (64, 69)) ('increased', 'PosReg', (30, 39)) ('mutant', 'Var', (78, 84)) ('rat', 'Species', '10116', (104, 107)) 69683 21755051 Immunohistochemical staining confirmed the low levels of p27Kip1 in the mutant rat adrenals and showed a moderate to elevated proliferation index of the tumors. ('proliferation index', 'CPA', (126, 145)) ('mutant', 'Var', (72, 78)) ('rat', 'Species', '10116', (133, 136)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('rat', 'Species', '10116', (109, 112)) ('tumors', 'Disease', (153, 159)) ('tumors', 'Phenotype', 'HP:0002664', (153, 159)) ('rat', 'Species', '10116', (79, 82)) ('elevated', 'PosReg', (117, 125)) ('tumors', 'Disease', 'MESH:D009369', (153, 159)) ('p27Kip1', 'Var', (57, 64)) 69685 21755051 Immunoreactivity for Ki67 in the rat lesions was higher than that displayed by human pheochromocytoma, usually lower than 3.5%. ('human', 'Species', '9606', (79, 84)) ('Ki67', 'Var', (21, 25)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (85, 101)) ('Ki67', 'Chemical', '-', (21, 25)) ('rat', 'Species', '10116', (33, 36)) ('pheochromocytoma', 'Disease', (85, 101)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (85, 101)) ('Immunoreactivity', 'MPA', (0, 16)) 69688 21755051 No metastatic spread was observed both by histology and by PET in any of the affected animals subjected to imaging, maybe because it had not yet taken place as the mutant rats were relatively young (5 months old) and their average life-span is 10 +- 2 months. ('mutant', 'Var', (164, 170)) ('metastatic spread', 'CPA', (3, 20)) ('rats', 'Species', '10116', (171, 175)) 69700 21755051 Internal radiotherapy of pheochromocytoma with 131I-MIBG has been used with some success in reducing tumor bulk, thereby attenuating the symptoms associated to catecholamines oversecretion and alleviating pain. ('reducing', 'NegReg', (92, 100)) ('symptoms', 'MPA', (137, 145)) ('catecholamines', 'Chemical', 'MESH:D002395', (160, 174)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (25, 41)) ('pain', 'Phenotype', 'HP:0012531', (205, 209)) ('alleviating', 'NegReg', (193, 204)) ('131I-MIBG', 'Var', (47, 56)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('tumor', 'Disease', (101, 106)) ('pain', 'Disease', 'MESH:D010146', (205, 209)) ('pain', 'Disease', (205, 209)) ('tumor', 'Disease', 'MESH:D009369', (101, 106)) ('pheochromocytoma', 'Disease', (25, 41)) ('catecholamines oversecretion', 'MPA', (160, 188)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (25, 41)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (47, 56)) ('attenuating', 'NegReg', (121, 132)) 69703 21755051 The mutant p27 protein associated with the MENX syndrome is degraded very fast by the proteasome so that its level in the tissues of affected rats is extremely reduced or totally absent. ('mutant', 'Var', (4, 10)) ('level', 'MPA', (109, 114)) ('absent', 'NegReg', (179, 185)) ('p27', 'Gene', (11, 14)) ('reduced', 'NegReg', (160, 167)) ('MENX syndrome', 'Disease', 'MESH:D013577', (43, 56)) ('rats', 'Species', '10116', (142, 146)) ('protein', 'Protein', (15, 22)) ('degraded', 'NegReg', (60, 68)) ('MENX syndrome', 'Disease', (43, 56)) ('associated', 'Reg', (23, 33)) 69752 18996821 Mutations in protooncogenes have been identified in numerous tumor syndromes. ('identified', 'Reg', (38, 48)) ('numerous tumor', 'Disease', (52, 66)) ('protooncogenes', 'Gene', (13, 27)) ('Mutations', 'Var', (0, 9)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('numerous tumor', 'Disease', 'MESH:D009369', (52, 66)) 69753 18996821 Mutations in the RET protooncogene on chromosome 10, encoding a transmembrane receptor tyrosine kinase, has been linked to the development of multiple endocrine neoplasia type 2A (MEN 2A) syndrome. ('multiple endocrine neoplasia type 2A', 'Gene', (142, 178)) ('RET', 'Gene', (17, 20)) ('multiple endocrine neoplasia type 2A', 'Gene', '5979', (142, 178)) ('Mutations', 'Var', (0, 9)) ('linked to', 'Reg', (113, 122)) ('MEN 2A', 'Gene', '5979', (180, 186)) ('MEN 2A', 'Gene', (180, 186)) ('RET', 'Gene', '5979', (17, 20)) ('neoplasia', 'Phenotype', 'HP:0002664', (161, 170)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (151, 170)) 69756 18996821 Like mutations in the RET protooncogene resulting in MEN 2A, mutations in KIT and PDGFRA (platelet-derived growth factor receptor, alpha polypeptide), both transmembrane tyrosine kinase receptors, have been associated with the formation of gastrointestinal stromal tumors (GISTs). ('PDGFRA', 'Gene', (82, 88)) ('RET', 'Gene', (22, 25)) ('MEN 2A', 'Gene', (53, 59)) ('platelet-derived growth factor receptor, alpha polypeptide', 'Gene', '5156', (90, 148)) ('MEN 2A', 'Gene', '5979', (53, 59)) ('gastrointestinal stromal tumors', 'Disease', (240, 271)) ('tumor', 'Phenotype', 'HP:0002664', (265, 270)) ('RET', 'Gene', '5979', (22, 25)) ('mutations', 'Var', (61, 70)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (240, 270)) ('tumors', 'Phenotype', 'HP:0002664', (265, 271)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (240, 271)) ('KIT', 'Gene', (74, 77)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (240, 271)) ('associated with', 'Reg', (207, 222)) ('GISTs', 'Phenotype', 'HP:0100723', (273, 278)) ('PDGFRA', 'Gene', '5156', (82, 88)) 69758 18996821 Most GISTs have a gain-of-function mutation in the KIT protooncogene, while 5% have a constitutive activating mutation in the PDGFRA gene. ('PDGFRA', 'Gene', (126, 132)) ('KIT protooncogene', 'Gene', (51, 68)) ('mutation', 'Var', (35, 43)) ('gain-of-function', 'PosReg', (18, 34)) ('GISTs', 'Phenotype', 'HP:0100723', (5, 10)) ('PDGFRA', 'Gene', '5156', (126, 132)) 69771 18996821 A germline mutation in the RET gene (p.Cys634Ser in exon 11) was identified in the niece. ('p.Cys634Ser', 'Var', (37, 48)) ('p.Cys634Ser', 'Mutation', 'rs75076352', (37, 48)) ('RET', 'Gene', (27, 30)) ('RET', 'Gene', '5979', (27, 30)) 69788 18996821 However, tumor tissue from these GISTs often lack both KIT and PDGFRA mutations, and these tumors are distinguished by their unique phenotype of multicentricity, location in the small intestine, morphology, and nonaggressive behavior. ('tumors', 'Disease', (91, 97)) ('KIT', 'Gene', (55, 58)) ('tumors', 'Disease', 'MESH:D009369', (91, 97)) ('mutations', 'Var', (70, 79)) ('lack', 'NegReg', (45, 49)) ('tumor', 'Disease', 'MESH:D009369', (9, 14)) ('tumors', 'Phenotype', 'HP:0002664', (91, 97)) ('PDGFRA', 'Gene', (63, 69)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('PDGFRA', 'Gene', '5156', (63, 69)) ('tumor', 'Disease', 'MESH:D009369', (91, 96)) ('tumor', 'Disease', (9, 14)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('GISTs', 'Phenotype', 'HP:0100723', (33, 38)) ('tumor', 'Disease', (91, 96)) 69793 18996821 In 2006, Perry et al described 3 cases of nonfamilial occurrences of abdominal paraganglioma and GISTs that did not exhibit the germline SDHA, SDHB, SDHC, SDHD, or KIT mutations that are generally associated with familial paraganglioma or GIST syndromes. ('SDHD', 'Gene', (155, 159)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('SDHA', 'Gene', '6389', (137, 141)) ('SDHC', 'Gene', (149, 153)) ('SDHB', 'Gene', (143, 147)) ('paraganglioma', 'Phenotype', 'HP:0002668', (222, 235)) ('mutations', 'Var', (168, 177)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (69, 92)) ('GIST syndrome', 'Disease', (239, 252)) ('familial paraganglioma', 'Disease', (213, 235)) ('GIST syndrome', 'Disease', 'MESH:D046152', (239, 252)) ('associated', 'Reg', (197, 207)) ('abdominal paraganglioma', 'Disease', (69, 92)) ('SDHD', 'Gene', '6392', (155, 159)) ('SDHC', 'Gene', '6391', (149, 153)) ('SDHB', 'Gene', '6390', (143, 147)) ('GISTs', 'Phenotype', 'HP:0100723', (97, 102)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (213, 235)) ('SDHA', 'Gene', (137, 141)) 69804 18996821 The presence of a RET mutation in an affected family member raises the possibility that RET mutations may be causal for GIST, although coincidence is also a possibility. ('mutation', 'Var', (22, 30)) ('RET', 'Gene', '5979', (18, 21)) ('RET', 'Gene', (88, 91)) ('RET', 'Gene', '5979', (88, 91)) ('RET', 'Gene', (18, 21)) 69805 18996821 It would be of interest to look for similar activating RET mutations in other individuals with GISTs, occurring either alone or with paraganglioma syndromes, who do not harbor mutations in KIT, PDGFRA, or other known genes. ('paraganglioma syndromes', 'Disease', (133, 156)) ('activating', 'PosReg', (44, 54)) ('GISTs', 'Disease', (95, 100)) ('RET', 'Gene', '5979', (55, 58)) ('PDGFRA', 'Gene', (194, 200)) ('RET', 'Gene', (55, 58)) ('PDGFRA', 'Gene', '5156', (194, 200)) ('mutations', 'Var', (59, 68)) ('paraganglioma', 'Phenotype', 'HP:0002668', (133, 146)) ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (133, 156)) ('GISTs', 'Phenotype', 'HP:0100723', (95, 100)) 69899 33334087 Embolization of paragangliomas prior to surgery has several advantages over the sole surgical resection approach. ('Embolization', 'Var', (0, 12)) ('paragangliomas', 'Disease', 'MESH:D010235', (16, 30)) ('paragangliomas', 'Disease', (16, 30)) ('paraganglioma', 'Phenotype', 'HP:0002668', (16, 29)) ('paragangliomas', 'Phenotype', 'HP:0002668', (16, 30)) 69988 30949620 Translating in vivo metabolomic analysis of succinate dehydrogenase deficient tumours into clinical utility Mutations in the mitochondrial enzyme succinate dehydrogenase (SDH) subunit genes are associated with a wide spectrum of tumours including phaeochromocytoma and paraganglioma (PPGL), gastrointestinal stromal tumours (GIST), renal cell carcinoma (RCC) and pituitary adenomas. ('succinate dehydrogenase', 'Gene', (44, 67)) ('RCC', 'Disease', (354, 357)) ('SDH', 'Gene', (171, 174)) ('phaeochromocytoma and paraganglioma', 'Disease', 'MESH:D010235', (247, 282)) ('carcinoma', 'Phenotype', 'HP:0030731', (343, 352)) ('dehydrogenase deficient tumours', 'Disease', (54, 85)) ('succinate dehydrogenase', 'Gene', (146, 169)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (363, 381)) ('glioma', 'Phenotype', 'HP:0009733', (276, 282)) ('associated with', 'Reg', (194, 209)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (363, 380)) ('RCC', 'Disease', 'MESH:C538614', (354, 357)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (363, 381)) ('pituitary adenomas', 'Disease', (363, 381)) ('gastrointestinal stromal tumours', 'Disease', 'MESH:D046152', (291, 323)) ('paraganglioma', 'Phenotype', 'HP:0002668', (269, 282)) ('dehydrogenase deficient tumours', 'Disease', 'MESH:D009369', (54, 85)) ('succinate dehydrogenase', 'Gene', '6390', (44, 67)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (332, 352)) ('tumours', 'Disease', (316, 323)) ('tumours', 'Disease', (229, 236)) ('tumours', 'Disease', (78, 85)) ('succinate dehydrogenase', 'Gene', '6390', (146, 169)) ('tumours', 'Phenotype', 'HP:0002664', (316, 323)) ('SDH', 'Gene', '6390', (171, 174)) ('tumours', 'Disease', 'MESH:D009369', (316, 323)) ('tumours', 'Phenotype', 'HP:0002664', (229, 236)) ('tumours', 'Phenotype', 'HP:0002664', (78, 85)) ('tumours', 'Disease', 'MESH:D009369', (229, 236)) ('tumours', 'Disease', 'MESH:D009369', (78, 85)) ('renal cell carcinoma', 'Disease', (332, 352)) ('gastrointestinal stromal tumours', 'Disease', (291, 323)) ('tumour', 'Phenotype', 'HP:0002664', (316, 322)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (332, 352)) ('tumour', 'Phenotype', 'HP:0002664', (229, 235)) ('Mutations', 'Var', (108, 117)) ('tumour', 'Phenotype', 'HP:0002664', (78, 84)) 69993 30949620 A succinate peak was seen in six patients, all of whom had a germline SDHx mutation or loss of SDHB by immunohistochemistry. ('loss', 'NegReg', (87, 91)) ('patients', 'Species', '9606', (33, 41)) ('succinate peak', 'MPA', (2, 16)) ('mutation', 'Var', (75, 83)) ('succinate', 'Chemical', 'MESH:D019802', (2, 11)) ('SDHB', 'Gene', '6390', (95, 99)) ('SDHB', 'Gene', (95, 99)) ('SDHx', 'Gene', (70, 74)) ('SDHx', 'Chemical', '-', (70, 74)) 69994 30949620 A succinate peak was also detected in two patients with a metastatic wild-type GIST (wtGIST) and no detectable germline SDHx mutation but a somatic epimutation in SDHC. ('epimutation', 'Var', (148, 159)) ('succinate peak', 'MPA', (2, 16)) ('succinate', 'Chemical', 'MESH:D019802', (2, 11)) ('SDHx', 'Chemical', '-', (120, 124)) ('SDHx', 'Gene', (120, 124)) ('SDHC', 'Gene', (163, 167)) ('patients', 'Species', '9606', (42, 50)) ('SDHC', 'Gene', '6391', (163, 167)) 70002 30949620 SDHx mutations were described initially in association with head and neck paragangliomas (derived from parasympathetic ganglia) and in phaeochromocytomas and paragangliomas (PPGL, derived from sympathetic ganglia and often secreting catecholamines). ('glioma', 'Phenotype', 'HP:0009733', (81, 87)) ('paragangliomas', 'Phenotype', 'HP:0002668', (74, 88)) ('paragangliomas', 'Phenotype', 'HP:0002668', (158, 172)) ('paraganglioma', 'Phenotype', 'HP:0002668', (158, 171)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (60, 88)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (69, 88)) ('glioma', 'Phenotype', 'HP:0009733', (165, 171)) ('association', 'Reg', (43, 54)) ('mutations', 'Var', (5, 14)) ('SDHx', 'Chemical', '-', (0, 4)) ('phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (135, 172)) ('catecholamines', 'Chemical', 'MESH:D002395', (233, 247)) ('SDHx', 'Gene', (0, 4)) ('neck paragangliomas', 'Disease', (69, 88)) ('paraganglioma', 'Phenotype', 'HP:0002668', (74, 87)) 70003 30949620 It is now recognised that approximately 40% of PPGL patients harbour a germline mutation in an inherited PPGL gene and SDHx mutations are the most common cause of PPGL predisposition. ('mutations', 'Var', (124, 133)) ('PPGL', 'Disease', (47, 51)) ('SDHx', 'Chemical', '-', (119, 123)) ('PPGL', 'Gene', (105, 109)) ('germline mutation', 'Var', (71, 88)) ('patients', 'Species', '9606', (52, 60)) 70004 30949620 In addition, germline SDHB mutations are associated with a high risk of malignancy in PPGL. ('mutations', 'Var', (27, 36)) ('malignancy', 'Disease', 'MESH:D009369', (72, 82)) ('associated', 'Reg', (41, 51)) ('SDHB', 'Gene', '6390', (22, 26)) ('malignancy', 'Disease', (72, 82)) ('SDHB', 'Gene', (22, 26)) ('PPGL', 'Disease', (86, 90)) 70005 30949620 Other tumour types associated with SDHx mutations include gastrointestinal stromal tumours (GISTs) and renal cell carcinomas (RCCs). ('carcinoma', 'Phenotype', 'HP:0030731', (114, 123)) ('carcinomas', 'Phenotype', 'HP:0030731', (114, 124)) ('tumour', 'Phenotype', 'HP:0002664', (6, 12)) ('tumour', 'Disease', 'MESH:D009369', (6, 12)) ('tumours', 'Phenotype', 'HP:0002664', (83, 90)) ('tumour', 'Disease', (6, 12)) ('RCC', 'Disease', 'MESH:C538614', (126, 129)) ('gastrointestinal stromal tumours', 'Disease', 'MESH:D046152', (58, 90)) ('tumour', 'Phenotype', 'HP:0002664', (83, 89)) ('mutations', 'Var', (40, 49)) ('tumour', 'Disease', 'MESH:D009369', (83, 89)) ('SDHx', 'Gene', (35, 39)) ('tumour', 'Disease', (83, 89)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (103, 124)) ('SDHx', 'Chemical', '-', (35, 39)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (103, 123)) ('renal cell carcinomas', 'Disease', (103, 124)) ('gastrointestinal stromal tumours', 'Disease', (58, 90)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (103, 124)) ('RCC', 'Disease', (126, 129)) 70007 30949620 However GISTs without KIT and PDGFRA gene mutations, known as wild-type (wtGIST), account for 15% of adult and 85% of paediatric GIST tumours and recent studies suggest that up to 88% of wtGIST are SDH-deficient. ('tumours', 'Phenotype', 'HP:0002664', (134, 141)) ('GIST tumours', 'Disease', (129, 141)) ('KIT', 'Gene', (22, 25)) ('SDH-deficient', 'Disease', (198, 211)) ('PDGFRA', 'Gene', '5156', (30, 36)) ('GIST tumours', 'Disease', 'MESH:D046152', (129, 141)) ('mutations', 'Var', (42, 51)) ('PDGFRA', 'Gene', (30, 36)) ('SDH-deficient', 'Disease', 'MESH:D007153', (198, 211)) ('tumour', 'Phenotype', 'HP:0002664', (134, 140)) 70008 30949620 wtGIST with SDH-deficiency may harbour a germline SDHx mutation (75% of cases) or an SDHC gene epimutation with hypermethylation of the promoter region. ('SDHx', 'Gene', (50, 54)) ('SDHC', 'Gene', (85, 89)) ('SDH-deficiency', 'Disease', (12, 26)) ('epimutation', 'Var', (95, 106)) ('SDHC', 'Gene', '6391', (85, 89)) ('mutation', 'Var', (55, 63)) ('SDH-deficiency', 'Disease', 'MESH:D007153', (12, 26)) ('SDHx', 'Chemical', '-', (50, 54)) 70011 30949620 Finally germline SDHx mutations have been described in rare patients with pituitary adenomas. ('pituitary adenoma', 'Phenotype', 'HP:0002893', (74, 91)) ('pituitary adenomas', 'Disease', (74, 92)) ('described', 'Reg', (42, 51)) ('patients', 'Species', '9606', (60, 68)) ('SDHx', 'Chemical', '-', (17, 21)) ('SDHx', 'Gene', (17, 21)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (74, 92)) ('mutations', 'Var', (22, 31)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (74, 92)) 70013 30949620 Succinate has been shown to be elevated by 100-fold in SDHx-mutated PPGL tumours ex-vivo compared with non-SDHx mutated PPGL tumours. ('PPGL tumours', 'Disease', 'MESH:D009369', (68, 80)) ('tumour', 'Phenotype', 'HP:0002664', (125, 131)) ('PPGL tumours', 'Disease', (68, 80)) ('Succinate', 'Chemical', 'MESH:D019802', (0, 9)) ('Succinate', 'MPA', (0, 9)) ('PPGL tumours', 'Disease', 'MESH:D009369', (120, 132)) ('PPGL tumours', 'Disease', (120, 132)) ('SDHx-mutated', 'Var', (55, 67)) ('tumour', 'Phenotype', 'HP:0002664', (73, 79)) ('elevated', 'PosReg', (31, 39)) ('SDHx', 'Chemical', '-', (55, 59)) ('tumours', 'Phenotype', 'HP:0002664', (73, 80)) ('SDHx', 'Chemical', '-', (107, 111)) ('tumours', 'Phenotype', 'HP:0002664', (125, 132)) 70014 30949620 Recently, in vivo detection of succinate by MR spectroscopy was reported in two patient cohorts with SDH deficient PPGL. ('succinate', 'Chemical', 'MESH:D019802', (31, 40)) ('deficient', 'Var', (105, 114)) ('SDH', 'Gene', '6390', (101, 104)) ('SDH', 'Gene', (101, 104)) ('patient', 'Species', '9606', (80, 87)) 70015 30949620 Similarly, the non-invasive detection of 2-hydroxyglutarate with 1H-MRS has been demonstrated in glioma in patients with a gain of function mutation in another citric acid cycle enzyme, isocitrate dehydrogenase 1 (IDH1). ('patients', 'Species', '9606', (107, 115)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (41, 59)) ('glioma', 'Disease', (97, 103)) ('gain of function', 'PosReg', (123, 139)) ('citric acid', 'Chemical', 'MESH:D019343', (160, 171)) ('IDH1', 'Gene', (214, 218)) ('mutation', 'Var', (140, 148)) ('1H', 'Chemical', '-', (65, 67)) ('IDH1', 'Gene', '3417', (214, 218)) ('glioma', 'Disease', 'MESH:D005910', (97, 103)) ('glioma', 'Phenotype', 'HP:0009733', (97, 103)) ('isocitrate dehydrogenase 1', 'Gene', (186, 212)) ('isocitrate dehydrogenase 1', 'Gene', '3417', (186, 212)) 70031 30949620 A germline mutation in a SDHx gene was identified in 9/15 (60%) of subjects: 5 in SDHB (4 missense variants and 1 truncating variant) and 4 in SDHA (1 missense and 3 truncating). ('SDHB', 'Gene', '6390', (82, 86)) ('SDHx', 'Gene', (25, 29)) ('SDHA', 'Gene', '6389', (143, 147)) ('SDHx', 'Chemical', '-', (25, 29)) ('SDHB', 'Gene', (82, 86)) ('SDHA', 'Gene', (143, 147)) ('missense variants', 'Var', (90, 107)) 70039 30949620 The in vivo detection of succinate on 1H-MRS correlated with tumour SDH deficiency: 4 of the 6 cases had a germline SDHx mutation and loss of SDHB expression on immunohistochemistry and a somatic SDHC epimutation was detected in 2 of the 6 (Figure 1). ('succinate', 'Chemical', 'MESH:D019802', (25, 34)) ('tumour SDH deficiency', 'Disease', 'MESH:D009369', (61, 82)) ('1H', 'Chemical', '-', (38, 40)) ('SDHB', 'Gene', (142, 146)) ('tumour SDH deficiency', 'Disease', (61, 82)) ('SDHC', 'Gene', (196, 200)) ('SDHx', 'Chemical', '-', (116, 120)) ('expression', 'MPA', (147, 157)) ('SDHx', 'Gene', (116, 120)) ('SDHC', 'Gene', '6391', (196, 200)) ('SDHB', 'Gene', '6390', (142, 146)) ('mutation', 'Var', (121, 129)) ('loss', 'NegReg', (134, 138)) ('tumour', 'Phenotype', 'HP:0002664', (61, 67)) 70041 30949620 Patient #8 with a germline SDHB mutation (c.600G>T p.Trp200Cys) and a glomus paraganglioma, demonstrated an SCR of 1.19; however the linewidth (29 Hz) was so broad due to the proximity of metallic dental work that the peak assignments were not reliable (Figure S1). ('paraganglioma', 'Phenotype', 'HP:0002668', (77, 90)) ('p.Trp200Cys', 'Var', (51, 62)) ('glomus paraganglioma', 'Disease', (70, 90)) ('glomus paraganglioma', 'Disease', 'MESH:D010235', (70, 90)) ('c.600G>T', 'Var', (42, 50)) ('SDHB', 'Gene', '6390', (27, 31)) ('p.Trp200Cys', 'SUBSTITUTION', 'None', (51, 62)) ('glioma', 'Phenotype', 'HP:0009733', (84, 90)) ('SDHB', 'Gene', (27, 31)) ('c.600G>T', 'Mutation', 'rs397516836', (42, 50)) ('Patient', 'Species', '9606', (0, 7)) 70044 30949620 Patient #4 had a metastatic wtGIST with no detectable germline SDHx mutation and preserved SDHB protein expression in the tumour tissue; choline was confidently fitted on LCModel but no succinate was seen. ('tumour', 'Disease', 'MESH:D009369', (122, 128)) ('succinate', 'Chemical', 'MESH:D019802', (186, 195)) ('choline', 'Chemical', 'MESH:D002794', (137, 144)) ('mutation', 'Var', (68, 76)) ('SDHB', 'Gene', '6390', (91, 95)) ('tumour', 'Disease', (122, 128)) ('SDHx', 'Gene', (63, 67)) ('expression', 'MPA', (104, 114)) ('SDHB', 'Gene', (91, 95)) ('SDHx', 'Chemical', '-', (63, 67)) ('tumour', 'Phenotype', 'HP:0002664', (122, 128)) ('Patient', 'Species', '9606', (0, 7)) 70052 30949620 Subject #2 with a metastatic paraganglioma to the lung, bone and lymph node and a germline SDHB mutation (c.268C>T p.Arg90*) underwent 1H-MRS on a large pelvic nodal metastasis prior to treatment with four cycles of lutetium 177-labelled peptide receptor radionuclide therapy. ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) ('paraganglioma to the lung', 'Disease', 'MESH:D010235', (29, 54)) ('SDHB', 'Gene', '6390', (91, 95)) ('p.Arg90*', 'SUBSTITUTION', 'None', (115, 123)) ('p.Arg90*', 'Var', (115, 123)) ('paraganglioma to the lung', 'Disease', (29, 54)) ('large pelvic', 'Phenotype', 'HP:0010779', (147, 159)) ('SDHB', 'Gene', (91, 95)) ('1H', 'Chemical', '-', (135, 137)) ('radionuclide', 'Chemical', 'MESH:D011868', (255, 267)) ('lutetium', 'Chemical', 'MESH:D008187', (216, 224)) ('glioma', 'Phenotype', 'HP:0009733', (36, 42)) ('c.268C>T', 'Mutation', 'rs74315366', (106, 114)) 70061 30949620 All six tumours with a positive succinate peak and elevated SCR were associated with a germline SDHx mutation (n = 4) or an SDHC epimutation (n = 2). ('positive', 'PosReg', (23, 31)) ('succinate peak', 'MPA', (32, 46)) ('tumours', 'Disease', (8, 15)) ('SDHC', 'Gene', (124, 128)) ('positive succinate peak', 'Phenotype', 'HP:0020149', (23, 46)) ('SCR', 'MPA', (60, 63)) ('SDHx', 'Gene', (96, 100)) ('succinate', 'Chemical', 'MESH:D019802', (32, 41)) ('SDHC', 'Gene', '6391', (124, 128)) ('SDHx', 'Chemical', '-', (96, 100)) ('epimutation', 'Var', (129, 140)) ('elevated', 'PosReg', (51, 59)) ('tumour', 'Phenotype', 'HP:0002664', (8, 14)) ('mutation', 'Var', (101, 109)) ('tumours', 'Phenotype', 'HP:0002664', (8, 15)) ('tumours', 'Disease', 'MESH:D009369', (8, 15)) 70063 30949620 Our findings are complementary to a previous study in which 1H-MRS was applied to 9 patients with paraganglioma and a succinate peak was detected in all 5 with an SDHx mutation but not in the 4 patients without a mutation. ('SDHx', 'Chemical', '-', (163, 167)) ('1H', 'Chemical', '-', (60, 62)) ('patients', 'Species', '9606', (194, 202)) ('paraganglioma', 'Disease', (98, 111)) ('succinate peak', 'MPA', (118, 132)) ('patients', 'Species', '9606', (84, 92)) ('succinate', 'Chemical', 'MESH:D019802', (118, 127)) ('paraganglioma', 'Disease', 'MESH:D010235', (98, 111)) ('mutation', 'Var', (168, 176)) ('to 9', 'Species', '1214577', (79, 83)) ('SDHx', 'Gene', (163, 167)) ('glioma', 'Phenotype', 'HP:0009733', (105, 111)) ('paraganglioma', 'Phenotype', 'HP:0002668', (98, 111)) 70064 30949620 We have demonstrated for the first time that 1H-MRS can also be used to determine the SDH status of GISTs and pituitary adenomas and that a succinate peak can be detected in SDH-deficient tumours with epigenetic inactivation of SDHC. ('tumour', 'Phenotype', 'HP:0002664', (188, 194)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (110, 128)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (110, 128)) ('pituitary adenomas', 'Disease', (110, 128)) ('SDH', 'Gene', '6390', (174, 177)) ('SDHC', 'Gene', (228, 232)) ('SDH', 'Gene', '6390', (86, 89)) ('SDH', 'Gene', '6390', (228, 231)) ('SDH-deficient tumours', 'Disease', 'MESH:D009369', (174, 195)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (110, 127)) ('epigenetic inactivation', 'Var', (201, 224)) ('SDH', 'Gene', (174, 177)) ('1H', 'Chemical', '-', (45, 47)) ('SDH', 'Gene', (86, 89)) ('succinate', 'Chemical', 'MESH:D019802', (140, 149)) ('SDH', 'Gene', (228, 231)) ('SDHC', 'Gene', '6391', (228, 232)) ('tumours', 'Phenotype', 'HP:0002664', (188, 195)) ('SDH-deficient tumours', 'Disease', (174, 195)) 70066 30949620 Potential diagnostic applications of this new approach include: (a) assessing the pathogenicity of patients with a germline SDHx variants of uncertain significance and a potentially SDH-related tumour; (b) investigating possible metastatic lesions e.g. ('SDH', 'Gene', (182, 185)) ('tumour', 'Disease', (194, 200)) ('SDH', 'Gene', '6390', (124, 127)) ('investigating', 'Reg', (206, 219)) ('patients', 'Species', '9606', (99, 107)) ('SDH', 'Gene', (124, 127)) ('tumour', 'Disease', 'MESH:D009369', (194, 200)) ('tumour', 'Phenotype', 'HP:0002664', (194, 200)) ('SDH', 'Gene', '6390', (182, 185)) ('SDHx', 'Chemical', '-', (124, 128)) ('variants', 'Var', (129, 137)) 70081 30949620 This important application of 1H-MRS could be expanded to include other tumours with specific metabolic defects including fumarate hydratase deficient tumours, IDH1 mutant tumours and the recently identified malate dehydrogenase 2 (MDH2) deficient tumours. ('tumour', 'Phenotype', 'HP:0002664', (172, 178)) ('IDH1', 'Gene', (160, 164)) ('tumours', 'Disease', (72, 79)) ('tumours', 'Disease', (248, 255)) ('tumours', 'Phenotype', 'HP:0002664', (72, 79)) ('IDH1', 'Gene', '3417', (160, 164)) ('fumarate', 'MPA', (122, 130)) ('tumours', 'Phenotype', 'HP:0002664', (248, 255)) ('fumarate hydratase deficient', 'Phenotype', 'HP:0003536', (122, 150)) ('tumours', 'Disease', 'MESH:D009369', (72, 79)) ('1H', 'Chemical', '-', (30, 32)) ('tumours', 'Disease', (151, 158)) ('tumours', 'Disease', 'MESH:D009369', (248, 255)) ('hydratase deficient tumours', 'Disease', (131, 158)) ('tumour', 'Phenotype', 'HP:0002664', (72, 78)) ('malate dehydrogenase 2 (MDH2) deficient tumours', 'Disease', 'MESH:C564973', (208, 255)) ('tumours', 'Phenotype', 'HP:0002664', (151, 158)) ('tumour', 'Phenotype', 'HP:0002664', (248, 254)) ('tumours', 'Disease', 'MESH:D009369', (151, 158)) ('hydratase deficient tumours', 'Disease', 'MESH:C538191', (131, 158)) ('tumours', 'Disease', (172, 179)) ('mutant', 'Var', (165, 171)) ('tumour', 'Phenotype', 'HP:0002664', (151, 157)) ('tumours', 'Phenotype', 'HP:0002664', (172, 179)) ('tumours', 'Disease', 'MESH:D009369', (172, 179)) 70091 30217226 Exome-wide analysis of bi-allelic alterations identifies a Lynch phenotype in The Cancer Genome Atlas Cancer susceptibility germline variants generally require somatic alteration of the remaining allele to drive oncogenesis and, in some cases, tumor mutational profiles. ('tumor', 'Phenotype', 'HP:0002664', (244, 249)) ('Cancer', 'Disease', (102, 108)) ('tumor', 'Disease', (244, 249)) ('Cancer', 'Disease', 'MESH:D009369', (82, 88)) ('Cancer', 'Disease', (82, 88)) ('oncogenesis', 'CPA', (212, 223)) ('drive', 'Reg', (206, 211)) ('Cancer', 'Disease', 'MESH:D009369', (102, 108)) ('Cancer', 'Phenotype', 'HP:0002664', (102, 108)) ('Cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('tumor', 'Disease', 'MESH:D009369', (244, 249)) ('variants', 'Var', (133, 141)) 70092 30217226 Whether combined germline and somatic bi-allelic alterations are universally required for germline variation to influence tumor mutational profile is unclear. ('variation', 'Var', (99, 108)) ('influence', 'Reg', (112, 121)) ('tumor', 'Disease', 'MESH:D009369', (122, 127)) ('tumor', 'Phenotype', 'HP:0002664', (122, 127)) ('tumor', 'Disease', (122, 127)) 70093 30217226 Here, we performed an exome-wide analysis of the frequency and functional effect of bi-allelic alterations in The Cancer Genome Atlas (TCGA). ('Cancer', 'Phenotype', 'HP:0002664', (114, 120)) ('bi-allelic alterations', 'Var', (84, 106)) ('Cancer', 'Disease', 'MESH:D009369', (114, 120)) ('Cancer', 'Disease', (114, 120)) 70094 30217226 We discovered significant enrichment of bi-allelic alterations in mismatch repair (MMR) genes and identified six bi-allelic carriers with elevated MSI, consistent with Lynch syndrome. ('Lynch syndrome', 'Disease', 'MESH:D003123', (168, 182)) ('MMR) genes', 'Gene', (83, 93)) ('bi-allelic alterations', 'Var', (40, 62)) ('elevated MSI', 'Disease', 'MESH:D006937', (138, 150)) ('elevated MSI', 'Disease', (138, 150)) ('Lynch syndrome', 'Disease', (168, 182)) 70095 30217226 Using MSI burden and bi-allelic alteration status, we reclassify two variants of unknown significance in MSH6 as potentially pathogenic for Lynch syndrome. ('variants', 'Var', (69, 77)) ('MSH6', 'Gene', '2956', (105, 109)) ('MSH6', 'Gene', (105, 109)) ('Lynch syndrome', 'Disease', (140, 154)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (140, 154)) ('pathogenic', 'Reg', (125, 135)) 70096 30217226 Extending our analysis of MSI to a set of 127 DNA damage repair (DDR) genes, we identified a novel association between methylation of SHPRH and MSI burden. ('methylation', 'Var', (119, 130)) ('SHPRH', 'Gene', (134, 139)) ('MSI burden', 'CPA', (144, 154)) ('SHPRH', 'Gene', '257218', (134, 139)) 70097 30217226 We find that bi-allelic alterations are infrequent in TCGA but most frequently occur in BRCA1/2 and MMR genes. ('occur', 'Reg', (79, 84)) ('TCGA', 'Gene', (54, 58)) ('BRCA1/2', 'Gene', (88, 95)) ('bi-allelic alterations', 'Var', (13, 35)) ('BRCA1/2', 'Gene', '672;675', (88, 95)) ('MMR', 'Gene', (100, 103)) 70099 30217226 In rare familial cancer, inherited variation can both increase cancer risk and influence the molecular landscape of a tumor. ('tumor', 'Disease', 'MESH:D009369', (118, 123)) ('cancer', 'Phenotype', 'HP:0002664', (63, 69)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('increase', 'PosReg', (54, 62)) ('cancer', 'Disease', 'MESH:D009369', (17, 23)) ('influence', 'Reg', (79, 88)) ('molecular landscape', 'MPA', (93, 112)) ('tumor', 'Disease', (118, 123)) ('cancer', 'Disease', (17, 23)) ('familial cancer', 'Disease', (8, 23)) ('cancer', 'Disease', 'MESH:D009369', (63, 69)) ('inherited variation', 'Var', (25, 44)) ('familial cancer', 'Disease', 'MESH:D009369', (8, 23)) ('cancer', 'Disease', (63, 69)) ('cancer', 'Phenotype', 'HP:0002664', (17, 23)) 70102 30217226 For example, carriers of pathogenic mutations in BRCA1/2 have both increased cancer risk and molecular evidence of homologous recombination deficiency in their tumors. ('deficiency in their tumors', 'Disease', (140, 166)) ('BRCA1/2', 'Gene', '672;675', (49, 56)) ('cancer', 'Disease', (77, 83)) ('cancer', 'Disease', 'MESH:D009369', (77, 83)) ('mutations', 'Var', (36, 45)) ('homologous', 'MPA', (115, 125)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('cancer', 'Phenotype', 'HP:0002664', (77, 83)) ('tumors', 'Phenotype', 'HP:0002664', (160, 166)) ('deficiency in their tumors', 'Disease', 'MESH:D009369', (140, 166)) ('BRCA1/2', 'Gene', (49, 56)) 70103 30217226 Novel sequencing and analytical methods can be used to reveal a myriad of molecular phenotypes in the tumor, such as mutational signatures, rearrangement signatures, MSI, and infiltrating immune cell content. ('mutational', 'Var', (117, 127)) ('tumor', 'Disease', 'MESH:D009369', (102, 107)) ('rearrangement signatures', 'Var', (140, 164)) ('MSI', 'Disease', (166, 169)) ('tumor', 'Disease', (102, 107)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) 70104 30217226 Rare variants in BRCA1/2 have been associated with mutational signature 3, a novel rearrangement signature, and an overall increased mutational burden. ('rearrangement', 'MPA', (83, 96)) ('mutational burden', 'MPA', (133, 150)) ('BRCA1/2', 'Gene', '672;675', (17, 24)) ('mutational signature 3', 'MPA', (51, 73)) ('associated', 'Reg', (35, 45)) ('variants', 'Var', (5, 13)) ('BRCA1/2', 'Gene', (17, 24)) 70105 30217226 Common variants in the APOBEC3 region have been associated with the corresponding APOBEC deficient mutational signature, and a haplotype at the 19p13.3 locus has been associated with somatic mutation of PTEN. ('PTEN', 'Gene', (203, 207)) ('PTEN', 'Gene', '5728', (203, 207)) ('associated', 'Reg', (48, 58)) ('APOBEC3', 'Gene', (23, 30)) ('variants', 'Var', (7, 15)) ('APOBEC deficient mutational signature', 'MPA', (82, 119)) ('associated', 'Reg', (167, 177)) 70107 30217226 Taken together, these results demonstrate that both common and rare germline variation can influence the somatic phenotype of sporadic cancers. ('cancers', 'Phenotype', 'HP:0002664', (135, 142)) ('influence', 'Reg', (91, 100)) ('germline variation', 'Var', (68, 86)) ('cancer', 'Phenotype', 'HP:0002664', (135, 141)) ('sporadic cancers', 'Disease', 'MESH:D009369', (126, 142)) ('sporadic cancers', 'Disease', (126, 142)) 70108 30217226 Similar to the two-hit mechanism of inactivation of tumor suppressor genes in familial cancer syndromes described by Nordling and then Knudson decades ago, germline and somatic bi-allelic alteration of BRCA1/2 is required to induce somatic mutational signature 3, a single germline "hit" is not sufficient. ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('familial cancer syndromes', 'Disease', 'MESH:D009386', (78, 103)) ('tumor', 'Disease', (52, 57)) ('BRCA1/2', 'Gene', '672;675', (202, 209)) ('bi-allelic alteration', 'Var', (177, 198)) ('cancer', 'Phenotype', 'HP:0002664', (87, 93)) ('familial cancer syndromes', 'Disease', (78, 103)) ('BRCA1/2', 'Gene', (202, 209)) ('tumor', 'Disease', 'MESH:D009369', (52, 57)) 70111 30217226 In contrast with previous studies of TCGA germline variation that focused on specific cancer types or candidate genes, we performed an exome-wide analysis to identify genes affected by both germline and somatic alterations (referred to as bi-allelic alteration) and study their association with somatic phenotypes. ('cancer', 'Disease', 'MESH:D009369', (86, 92)) ('alterations', 'Var', (211, 222)) ('cancer', 'Phenotype', 'HP:0002664', (86, 92)) ('cancer', 'Disease', (86, 92)) 70112 30217226 Specifically, we conducted an integrated study of all genetic factors that contribute to somatic MSI burden and identified six individuals with characteristics consistent with Lynch syndrome: bi-allelic alteration of a MMR gene, elevated somatic MSI, and an earlier age of cancer diagnosis. ('Lynch syndrome', 'Disease', (176, 190)) ('elevated', 'PosReg', (229, 237)) ('cancer', 'Disease', (273, 279)) ('cancer', 'Disease', 'MESH:D009369', (273, 279)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (176, 190)) ('cancer', 'Phenotype', 'HP:0002664', (273, 279)) ('bi-allelic alteration', 'Var', (192, 213)) ('MMR', 'Gene', (219, 222)) 70120 30217226 Methylation calls were performed for each gene and each cancer type independently. ('cancer', 'Disease', (56, 62)) ('cancer', 'Disease', 'MESH:D009369', (56, 62)) ('Methylation calls', 'Var', (0, 17)) ('cancer', 'Phenotype', 'HP:0002664', (56, 62)) 70122 30217226 To determine if methylation calls were associated with reduced somatic gene expression, a linear model of the form log10 (Eij)~Ci + Mij was used, where Eij denotes expression of gene j in tumor i, Ci denotes cancer type of sample i, and Mij denotes binary methylation status of gene j in sample i. ('tumor', 'Disease', (188, 193)) ('cancer', 'Disease', (208, 214)) ('reduced', 'NegReg', (55, 62)) ('cancer', 'Phenotype', 'HP:0002664', (208, 214)) ('methylation calls', 'Var', (16, 33)) ('tumor', 'Disease', 'MESH:D009369', (188, 193)) ('tumor', 'Phenotype', 'HP:0002664', (188, 193)) ('cancer', 'Disease', 'MESH:D009369', (208, 214)) 70126 30217226 To identify somatic mutational signatures, counts for each of 96 possible somatic substitutions +- 1 bp context were obtained for all tumor samples. ('tumor', 'Disease', 'MESH:D009369', (134, 139)) ('substitutions', 'Var', (82, 95)) ('tumor', 'Disease', (134, 139)) ('tumor', 'Phenotype', 'HP:0002664', (134, 139)) 70129 30217226 A one-way Fisher's exact test was used to test for an abundance of another alteration of interest in SHPRH methylation positive individuals vs. SHPRH methylation negative individuals. ('SHPRH', 'Gene', '257218', (144, 149)) ('SHPRH', 'Gene', (101, 106)) ('positive', 'Var', (119, 127)) ('methylation positive', 'Var', (107, 127)) ('SHPRH', 'Gene', '257218', (101, 106)) ('SHPRH', 'Gene', (144, 149)) 70133 30217226 Similarly, we repeated the analysis using a less restrictive definition of LOH, referred to as "allelic imbalance" (AI), that accommodates other mechanisms such as copy neutral LOH, subclonal LOH, or intra-tumoral SCNA heterogeneity (see "Methods"). ('tumor', 'Phenotype', 'HP:0002664', (206, 211)) ('imbalance', 'Phenotype', 'HP:0002172', (104, 113)) ('intra-tumoral', 'Disease', (200, 213)) ('copy neutral', 'Var', (164, 176)) ('intra-tumoral', 'Disease', 'MESH:D009369', (200, 213)) 70134 30217226 DDR genes were assigned to eight gene sets using pathway information: direct repair, translesion synthesis, mismatch repair, Fanconi anemia, non-homologous end joining, base excision repair, homologous recombination, and nucleotide excision repair. ('Fanconi anemia', 'Disease', (125, 139)) ('translesion synthesis', 'MPA', (85, 106)) ('non-homologous end joining', 'MPA', (141, 167)) ('homologous recombination', 'Var', (191, 215)) ('Fanconi anemia', 'Disease', 'MESH:D005199', (125, 139)) ('Fanconi anemia', 'Phenotype', 'HP:0001994', (125, 139)) ('direct repair', 'MPA', (70, 83)) ('base excision repair', 'MPA', (169, 189)) ('anemia', 'Phenotype', 'HP:0001903', (133, 139)) ('mismatch repair', 'MPA', (108, 123)) 70136 30217226 For each gene set and cancer type, we calculated the fraction of individuals with bi-allelic, germline, somatic, or epigenetic alteration of any gene in the gene set (Fig. ('cancer', 'Disease', 'MESH:D009369', (22, 28)) ('cancer', 'Disease', (22, 28)) ('epigenetic alteration', 'Var', (116, 137)) ('bi-allelic', 'Var', (82, 92)) ('cancer', 'Phenotype', 'HP:0002664', (22, 28)) 70139 30217226 We discovered associations between breast cancer and germline alteration of the Fanconi anemia and tumor suppressor gene set, which are likely driven by BRCA1/2 germline variants (Additional file 1: Figure S4a). ('tumor', 'Disease', (99, 104)) ('associations', 'Interaction', (14, 26)) ('Fanconi anemia', 'Disease', (80, 94)) ('cancer', 'Phenotype', 'HP:0002664', (42, 48)) ('BRCA1/2', 'Gene', (153, 160)) ('Fanconi anemia', 'Disease', 'MESH:D005199', (80, 94)) ('breast cancer', 'Disease', 'MESH:D001943', (35, 48)) ('variants', 'Var', (170, 178)) ('BRCA1/2', 'Gene', '672;675', (153, 160)) ('tumor', 'Disease', 'MESH:D009369', (99, 104)) ('anemia', 'Phenotype', 'HP:0001903', (88, 94)) ('breast cancer', 'Disease', (35, 48)) ('breast cancer', 'Phenotype', 'HP:0003002', (35, 48)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('Fanconi anemia', 'Phenotype', 'HP:0001994', (80, 94)) 70140 30217226 We expanded our analysis to include known pathogenic missense variants from the ClinVar database and discovered additional significant associations between pheochromocytoma and paraganglioma (PCPG) and both the predisposition and oncogene sets (Additional file 1: Figure S4b and Additional file 5: Table S4). ('missense variants', 'Var', (53, 70)) ('paraganglioma', 'Disease', (177, 190)) ('pheochromocytoma', 'Disease', (156, 172)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (156, 172)) ('paraganglioma', 'Disease', 'MESH:D010235', (177, 190)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (156, 172)) ('paraganglioma', 'Phenotype', 'HP:0002668', (177, 190)) 70141 30217226 This association is driven by missense variants in SDHB and RET that predispose to PCPG and have been previously reported in TCGA. ('RET', 'Gene', (60, 63)) ('PCPG', 'Disease', (83, 87)) ('predispose', 'Reg', (69, 79)) ('missense variants', 'Var', (30, 47)) ('RET', 'Gene', '5979', (60, 63)) ('SDHB', 'Gene', '6390', (51, 55)) ('SDHB', 'Gene', (51, 55)) 70143 30217226 We conclude that there is no cancer type in TCGA that harbors an excess of damaging germline variants in DDR or cancer-relevant genes, with the exception of the well-described predisposition syndrome genes BRCA1/2, SDHB, and RET. ('RET', 'Gene', (225, 228)) ('cancer', 'Disease', (29, 35)) ('SDHB', 'Gene', '6390', (215, 219)) ('BRCA1/2', 'Gene', '672;675', (206, 213)) ('cancer', 'Disease', (112, 118)) ('cancer', 'Disease', 'MESH:D009369', (112, 118)) ('SDHB', 'Gene', (215, 219)) ('variants', 'Var', (93, 101)) ('RET', 'Gene', '5979', (225, 228)) ('cancer', 'Phenotype', 'HP:0002664', (29, 35)) ('cancer', 'Disease', 'MESH:D009369', (29, 35)) ('cancer', 'Phenotype', 'HP:0002664', (112, 118)) ('BRCA1/2', 'Gene', (206, 213)) ('DDR', 'Gene', (105, 108)) 70145 30217226 The remaining individual carried a germline:somatic alteration of MSH5 (Fig. ('MSH5', 'Gene', (66, 70)) ('somatic alteration', 'Var', (44, 62)) ('MSH5', 'Gene', '4439', (66, 70)) 70147 30217226 Four of the germline:somatic alteration carriers have uterine cancer (UCEC) and two have colon cancer (COAD), cancer type characteristic of Lynch syndrome (Fig. ('cancer', 'Disease', 'MESH:D009369', (110, 116)) ('cancer', 'Disease', (110, 116)) ('cancer', 'Disease', 'MESH:D009369', (95, 101)) ('cancer', 'Phenotype', 'HP:0002664', (95, 101)) ('COAD', 'Disease', (103, 107)) ('cancer', 'Phenotype', 'HP:0002664', (62, 68)) ('colon cancer', 'Phenotype', 'HP:0003003', (89, 101)) ('cancer', 'Disease', (95, 101)) ('cancer', 'Phenotype', 'HP:0002664', (110, 116)) ('uterine cancer', 'Phenotype', 'HP:0010784', (54, 68)) ('cancer', 'Disease', (62, 68)) ('colon cancer', 'Disease', 'MESH:D015179', (89, 101)) ('Lynch syndrome', 'Disease', (140, 154)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (140, 154)) ('colon cancer', 'Disease', (89, 101)) ('cancer', 'Disease', 'MESH:D009369', (62, 68)) ('COAD', 'Disease', 'MESH:D029424', (103, 107)) ('alteration', 'Var', (29, 39)) 70149 30217226 Using previously published MSI data, we investigated the fraction of microsatellite loci that exhibit instability in the tumor (somatic MSI burden) of individuals carrying alterations in MMR genes. ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('MMR', 'Gene', (187, 190)) ('tumor', 'Disease', (121, 126)) ('alterations', 'Var', (172, 183)) ('tumor', 'Disease', 'MESH:D009369', (121, 126)) 70150 30217226 Figure 2a shows germline, somatic, and epigenetic alteration status of L-MMR genes for all individuals classified as MSI high (MSI-H) by Hause et al., with bi-allelic mutation carriers grouped to the left. ('epigenetic alteration', 'Var', (39, 60)) ('MSI-H', 'Disease', (127, 132)) ('MSI-H', 'Disease', 'MESH:D000848', (127, 132)) ('L-MMR', 'Gene', (71, 76)) 70152 30217226 Using a linear model controlling for cancer type, we found that the 6 individuals with germline:somatic MMR alterations were diagnosed on average 14 years earlier (p = 0.0041) and have 2.8 fold higher somatic MSI (p = 3.95e-15) than individuals with any other type of MMR pathway alteration (Fig. ('higher', 'PosReg', (194, 200)) ('MMR', 'Gene', (104, 107)) ('cancer', 'Disease', 'MESH:D009369', (37, 43)) ('somatic MSI', 'CPA', (201, 212)) ('alterations', 'Var', (108, 119)) ('cancer', 'Disease', (37, 43)) ('cancer', 'Phenotype', 'HP:0002664', (37, 43)) 70153 30217226 Of the five individuals with germline:somatic alteration of a L-MMR gene, four carried a germline LOF variant that is known to be pathogenic for Lynch syndrome, and one carried a LOF variant MSH6 (p.I855fs) not present in ClinVar (Additional file 1: Table S7). ('L-MMR', 'Gene', (62, 67)) ('alteration', 'Var', (46, 56)) ('Lynch syndrome', 'Disease', (145, 159)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (145, 159)) ('p.I855fs', 'Var', (197, 205)) ('MSH6', 'Gene', (191, 195)) ('LOF', 'NegReg', (98, 101)) ('variant', 'Var', (102, 109)) ('MSH6', 'Gene', '2956', (191, 195)) ('p.I855fs', 'Mutation', 'p.I855fsX', (197, 205)) 70154 30217226 This frameshift MSH6 VUS is five base pairs upstream of a known pathogenic frameshift variant. ('MSH6', 'Gene', '2956', (16, 20)) ('MSH6', 'Gene', (16, 20)) ('frameshift', 'Var', (5, 15)) ('frameshift variant', 'Var', (75, 93)) 70155 30217226 This suggests that disruption of the reading frame in this gene region is pathogenic and the novel MSH6 variant likely also predisposes to Lynch syndrome (Additional file 1: Table S8). ('predisposes', 'Reg', (124, 135)) ('disruption', 'Var', (19, 29)) ('Lynch syndrome', 'Disease', (139, 153)) ('MSH6', 'Gene', '2956', (99, 103)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (139, 153)) ('MSH6', 'Gene', (99, 103)) ('variant', 'Var', (104, 111)) 70157 30217226 Interestingly, we observed the identical nonsense mutation in PMS2 (p.R628X) in two individuals, once as an inherited variant and once as an acquired somatic mutation (Additional file 1: Figure S5). ('PMS2', 'Gene', '5395', (62, 66)) ('p.R628X', 'Var', (68, 75)) ('PMS2', 'Gene', (62, 66)) ('p.R628X', 'Mutation', 'rs63750451', (68, 75)) 70158 30217226 We expanded our analysis to include missense variants known to be pathogenic for Lynch syndrome from ClinVar. ('missense variants', 'Var', (36, 53)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (81, 95)) ('Lynch syndrome', 'Disease', (81, 95)) 70159 30217226 We identified one individual with bi-allelic alteration of MSH2 involving a pathogenic missense germline variant (p.S554 N) and a somatic LOF mutation (Additional file 1: Table S7). ('pathogenic', 'Reg', (76, 86)) ('p.S554 N', 'Var', (114, 122)) ('MSH2', 'Gene', (59, 63)) ('MSH2', 'Gene', '4436', (59, 63)) ('p.S554 N', 'Mutation', 'rs63750597', (114, 122)) 70160 30217226 Including missense somatic mutations with a CADD score >= 20 led to the identification of one individual with bi-allelic alteration of PMS2 involving a germline LOF variant (p.R563X) and a secondary somatic missense mutation (Additional file 1: Table S8). ('p.R563X', 'Mutation', 'rs587778618', (174, 181)) ('LOF', 'NegReg', (161, 164)) ('PMS2', 'Gene', (135, 139)) ('p.R563X', 'Var', (174, 181)) ('PMS2', 'Gene', '5395', (135, 139)) 70161 30217226 We reasoned that the phenotype of elevated somatic MSI and germline:somatic L-MMR mutation could be used to identify germline VUS likely to be pathogenic for Lynch syndrome. ('mutation', 'Var', (82, 90)) ('Lynch syndrome', 'Disease', (158, 172)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (158, 172)) ('L-MMR', 'Gene', (76, 81)) 70163 30217226 Three individuals met the criteria of having an MSI-H phenotype and a bi-allelic L-MMR mutation involving a likely damaging missense germline variant. ('missense', 'Var', (124, 132)) ('MSI-H', 'Disease', (48, 53)) ('L-MMR', 'Gene', (81, 86)) ('mutation', 'Var', (87, 95)) ('MSI-H', 'Disease', 'MESH:D000848', (48, 53)) 70164 30217226 One was the previously identified MSH2 p.S554N variant carrier, the others carried two VUS: MSH2 (p.P616R) and MSH6 (p.F432C) (Additional file 1: Table S8). ('p.S554N variant', 'Var', (39, 54)) ('MSH2', 'Gene', (92, 96)) ('p.P616R', 'Mutation', 'rs587779965', (98, 105)) ('p.S554N', 'Mutation', 'rs63750597', (39, 46)) ('MSH2', 'Gene', '4436', (92, 96)) ('MSH6', 'Gene', (111, 115)) ('MSH2', 'Gene', (34, 38)) ('MSH2', 'Gene', '4436', (34, 38)) ('p.F432C', 'Var', (117, 124)) ('MSH6', 'Gene', '2956', (111, 115)) ('p.P616R', 'Var', (98, 105)) ('p.F432C', 'Mutation', 'rs750528093', (117, 124)) 70165 30217226 Closer investigation of the MSH6 p.F432C variant showed that other amino acid substitutions at the same residue were classified as pathogenic in ClinVar (Additional file 1: Table S8). ('pathogenic', 'Reg', (131, 141)) ('ClinVar', 'Disease', (145, 152)) ('MSH6', 'Gene', (28, 32)) ('p.F432C', 'Var', (33, 40)) ('p.F432C', 'Mutation', 'rs750528093', (33, 40)) ('MSH6', 'Gene', '2956', (28, 32)) 70167 30217226 The individual carrying the MSH6 p.F432C variant was diagnosed earlier than average (Z = - 1.03) while the individual carrying the MSH2 p.P616R variant was diagnosed later (Z = 1.20). ('p.F432C', 'Var', (33, 40)) ('MSH6', 'Gene', (28, 32)) ('p.F432C', 'Mutation', 'rs750528093', (33, 40)) ('p.P616R', 'Mutation', 'rs587779965', (136, 143)) ('MSH6', 'Gene', '2956', (28, 32)) ('MSH2', 'Gene', (131, 135)) ('MSH2', 'Gene', '4436', (131, 135)) 70168 30217226 Age of diagnosis cannot be used alone to classify a variant; however, this evidence suggests that MSH2 p.P616R may not be pathogenic. ('MSH2', 'Gene', (98, 102)) ('p.P616R', 'Var', (103, 110)) ('MSH2', 'Gene', '4436', (98, 102)) ('p.P616R', 'Mutation', 'rs587779965', (103, 110)) 70169 30217226 While validation is required to confirm pathogenicity of this variant as well as the previously mentioned MSH6 p.I855fs, we offer evidence that these variants may predispose to Lynch syndrome, as well as show evidence suggesting that MSH2 p.P616R may be benign. ('variants', 'Var', (150, 158)) ('MSH6', 'Gene', '2956', (106, 110)) ('MSH2', 'Gene', (234, 238)) ('predispose', 'Reg', (163, 173)) ('Lynch syndrome', 'Disease', (177, 191)) ('MSH2', 'Gene', '4436', (234, 238)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (177, 191)) ('MSH6', 'Gene', (106, 110)) ('p.I855fs', 'Mutation', 'p.I855fsX', (111, 119)) ('p.P616R', 'Var', (239, 246)) ('p.P616R', 'Mutation', 'rs587779965', (239, 246)) 70170 30217226 Taken together, we have identified ten individuals with germline:somatic MMR alterations, six of which carry a germline variant that is known to be pathogenic for Lynch syndrome (Table 1). ('MMR', 'Gene', (73, 76)) ('pathogenic', 'Reg', (148, 158)) ('Lynch syndrome', 'Disease', (163, 177)) ('alterations', 'Var', (77, 88)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (163, 177)) ('variant', 'Var', (120, 127)) 70171 30217226 We found that both Bi-LOF (p = 2.78e-15) and Bi-Miss (p = 1.01e-10) groups have significantly elevated MSI (Fig. ('Bi-Miss', 'Var', (45, 52)) ('elevated MSI', 'Disease', 'MESH:D006937', (94, 106)) ('elevated MSI', 'Disease', (94, 106)) 70174 30217226 Having shown that combined germline LOF and missense somatic mutations are sufficient to cause elevated MSI, we hypothesized that damaging germline variation in the absence of somatic mutation could also increase somatic MSI. ('LOF', 'NegReg', (36, 39)) ('elevated MSI', 'Disease', (95, 107)) ('increase', 'PosReg', (204, 212)) ('somatic MSI', 'CPA', (213, 224)) ('elevated MSI', 'Disease', 'MESH:D006937', (95, 107)) ('missense', 'Var', (44, 52)) 70175 30217226 There were no significant association between damaging germline variation in the MMR pathway and somatic MSI burden (Additional file 1: Figure S7 and Table S12). ('somatic MSI burden', 'CPA', (97, 115)) ('S12', 'Gene', '6268', (156, 159)) ('germline variation', 'Var', (55, 73)) ('S12', 'Gene', (156, 159)) ('MMR pathway', 'Pathway', (81, 92)) 70176 30217226 Known variants showed the strongest effect (0.02 fold increase in MSI burden), and this was largely driven by MLH3 p.V741F, a variant with conflicting reports of pathogenicity that is carried by 195 individuals. ('increase', 'PosReg', (54, 62)) ('MLH3', 'Gene', '27030', (110, 114)) ('MLH3', 'Gene', (110, 114)) ('p.V741F', 'Mutation', 'rs28756990', (115, 122)) ('p.V741F', 'Var', (115, 122)) 70179 30217226 In addition, we discovered a novel association between methylation of SHPRH and elevated somatic MSI (p = 1.19e-16) (Fig. ('elevated', 'PosReg', (80, 88)) ('SHPRH', 'Gene', '257218', (70, 75)) ('somatic MSI', 'CPA', (89, 100)) ('methylation', 'Var', (55, 66)) ('SHPRH', 'Gene', (70, 75)) 70181 30217226 Methylation of SHPRH was associated with a 16% decrease in gene expression in a pan-cancer analysis (Fig. ('cancer', 'Disease', 'MESH:D009369', (84, 90)) ('cancer', 'Disease', (84, 90)) ('SHPRH', 'Gene', (15, 20)) ('Methylation', 'Var', (0, 11)) ('decrease', 'NegReg', (47, 55)) ('gene expression', 'MPA', (59, 74)) ('SHPRH', 'Gene', '257218', (15, 20)) ('cancer', 'Phenotype', 'HP:0002664', (84, 90)) 70182 30217226 We observed that methylation of SHPRH has the strongest effect both on SHPRH expression and somatic MSI burden in uterine cancer (Fig. ('expression', 'MPA', (77, 87)) ('SHPRH', 'Gene', (32, 37)) ('SHPRH', 'Gene', (71, 76)) ('effect', 'Reg', (56, 62)) ('cancer', 'Disease', (122, 128)) ('methylation', 'Var', (17, 28)) ('cancer', 'Disease', 'MESH:D009369', (122, 128)) ('SHPRH', 'Gene', '257218', (71, 76)) ('uterine cancer', 'Phenotype', 'HP:0010784', (114, 128)) ('cancer', 'Phenotype', 'HP:0002664', (122, 128)) ('SHPRH', 'Gene', '257218', (32, 37)) 70184 30217226 Methylation of MLH1 and SHPRH are both associated with mutational signature 6, with a stronger association in uterine cancer (Additional file 1: Figure S11). ('cancer', 'Disease', (118, 124)) ('cancer', 'Disease', 'MESH:D009369', (118, 124)) ('mutational', 'Var', (55, 65)) ('uterine cancer', 'Phenotype', 'HP:0010784', (110, 124)) ('S11', 'Gene', '6267', (152, 155)) ('Methylation', 'Var', (0, 11)) ('cancer', 'Phenotype', 'HP:0002664', (118, 124)) ('S11', 'Gene', (152, 155)) ('associated', 'Reg', (39, 49)) ('SHPRH', 'Gene', '257218', (24, 29)) ('SHPRH', 'Gene', (24, 29)) ('MLH1', 'Gene', '4292', (15, 19)) ('MLH1', 'Gene', (15, 19)) 70187 30217226 Furthermore, we found a significant, albeit weaker, association between somatic expression of SHPRH and MSI burden, indicating that SHPRH methylation likely affects MSI burden via silencing of SHPRH (Additional file 1: Table S15). ('silencing', 'NegReg', (180, 189)) ('SHPRH', 'Gene', (94, 99)) ('SHPRH', 'Gene', '257218', (193, 198)) ('SHPRH', 'Gene', (193, 198)) ('SHPRH', 'Gene', (132, 137)) ('S15', 'Gene', (225, 228)) ('affects', 'Reg', (157, 164)) ('SHPRH', 'Gene', '257218', (94, 99)) ('MSI burden', 'MPA', (165, 175)) ('SHPRH', 'Gene', '257218', (132, 137)) ('methylation', 'Var', (138, 149)) ('S15', 'Gene', '6209', (225, 228)) 70188 30217226 We hypothesized that mono- or bi-allelic alterations in other DDR pathways may also be associated with known mutational signatures, as has been demonstrated between bi-allelic alteration of BRCA1/2 and mutational signature 3. ('DDR pathways', 'Pathway', (62, 74)) ('bi-allelic alterations', 'Var', (30, 52)) ('associated', 'Reg', (87, 97)) ('BRCA1/2', 'Gene', (190, 197)) ('mono-', 'Var', (21, 26)) ('BRCA1/2', 'Gene', '672;675', (190, 197)) 70189 30217226 We first attempted to replicate the BRCA1/2 association, but surprisingly found high levels of mutational signature 3 in individuals carrying mono-allelic damaging germline BRCA1/2 variation. ('variation', 'Var', (181, 190)) ('BRCA1/2', 'Gene', (173, 180)) ('BRCA1/2', 'Gene', (36, 43)) ('BRCA1/2', 'Gene', '672;675', (173, 180)) ('BRCA1/2', 'Gene', '672;675', (36, 43)) 70190 30217226 However, when we considered AI events to be bi-allelic alterations, we no longer found a significant association between mono-allelic BRCA1/2 alterations and somatic mutational signature 3 (Additional file 1: Figure S13 and Additional file 6: Table S16). ('alterations', 'Var', (142, 153)) ('BRCA1/2', 'Gene', (134, 141)) ('S16', 'Gene', (249, 252)) ('S16', 'Gene', '6217', (249, 252)) ('BRCA1/2', 'Gene', '672;675', (134, 141)) 70192 30217226 We next tested for association between 30 somatic mutational signatures from COSMIC and germline bi-allelic alteration in six DDR pathways with more than five individuals carrying bi-allelic alteration (FA, MMR, HR, BER, NHEJ, and TLS) (Additional file 1: Figure S14a). ('tested', 'Reg', (8, 14)) ('S14', 'Gene', (263, 266)) ('S14', 'Gene', '6208', (263, 266)) ('bi-allelic alteration', 'Var', (97, 118)) ('TLS', 'Gene', (231, 234)) ('TLS', 'Gene', '2521', (231, 234)) ('DDR pathways', 'Pathway', (126, 138)) 70193 30217226 The only significant association uncovered (FDR < 15%) was between Fanconi anemia and signature 3, which was driven by the known association between BRCA1/2 alterations and signature 3. ('BRCA1/2', 'Gene', (149, 156)) ('Fanconi anemia', 'Phenotype', 'HP:0001994', (67, 81)) ('Fanconi anemia', 'Disease', (67, 81)) ('alterations', 'Var', (157, 168)) ('BRCA1/2', 'Gene', '672;675', (149, 156)) ('Fanconi anemia', 'Disease', 'MESH:D005199', (67, 81)) ('anemia', 'Phenotype', 'HP:0001903', (75, 81)) ('signature 3', 'Gene', (86, 97)) 70194 30217226 We repeated this analysis expanding to include individuals with mono-allelic germline alteration in DDR pathways and found no significant associations (Additional file 1: Figure S14b). ('germline alteration', 'Var', (77, 96)) ('S14', 'Gene', (178, 181)) ('DDR pathways', 'Pathway', (100, 112)) ('S14', 'Gene', '6208', (178, 181)) 70196 30217226 Known pathogenic variation in SDHB/RET, BRCA1/2, and MMR genes is thought to be responsible for a subset of pheochromocytoma and paraganglioma, breast, ovarian, colon, and uterine cancers in TCGA. ('pheochromocytoma', 'Disease', 'MESH:D010673', (108, 124)) ('RET', 'Gene', (35, 38)) ('pheochromocytoma', 'Disease', (108, 124)) ('cancers', 'Disease', 'MESH:D009369', (180, 187)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (108, 124)) ('BRCA1/2', 'Gene', (40, 47)) ('SDHB', 'Gene', '6390', (30, 34)) ('MMR', 'Gene', (53, 56)) ('paraganglioma, breast, ovarian, colon', 'Disease', 'MESH:D061325', (129, 166)) ('cancer', 'Phenotype', 'HP:0002664', (180, 186)) ('SDHB', 'Gene', (30, 34)) ('BRCA1/2', 'Gene', '672;675', (40, 47)) ('responsible', 'Reg', (80, 91)) ('paraganglioma', 'Phenotype', 'HP:0002668', (129, 142)) ('uterine cancer', 'Phenotype', 'HP:0010784', (172, 186)) ('RET', 'Gene', '5979', (35, 38)) ('cancers', 'Phenotype', 'HP:0002664', (180, 187)) ('cancers', 'Disease', (180, 187)) ('variation', 'Var', (17, 26)) ('uterine cancers', 'Phenotype', 'HP:0010784', (172, 187)) 70197 30217226 Another relatively common cancer syndrome that predisposes to cancer types found in TCGA is Li-Fraumeni syndrome (LFS), which arises due to inherited variation in TP53. ('variation', 'Var', (150, 159)) ('cancer', 'Phenotype', 'HP:0002664', (62, 68)) ('cancer', 'Disease', (26, 32)) ('cancer', 'Disease', 'MESH:D009369', (26, 32)) ('TCGA', 'Gene', (84, 88)) ('TP53', 'Gene', '7157', (163, 167)) ('cancer syndrome', 'Disease', 'MESH:D009369', (26, 41)) ('cancer syndrome', 'Disease', (26, 41)) ('Li-Fraumeni syndrome', 'Disease', 'MESH:D016864', (92, 112)) ('TP53', 'Gene', (163, 167)) ('cancer', 'Disease', (62, 68)) ('cancer', 'Disease', 'MESH:D009369', (62, 68)) ('cancer', 'Phenotype', 'HP:0002664', (26, 32)) ('Li-Fraumeni syndrome', 'Disease', (92, 112)) 70198 30217226 Using the IARC-TP53 variant database, we identified 38 individuals carrying a potential LFS variant (Additional file 5: Table S4). ('LFS', 'Gene', (88, 91)) ('TP53', 'Gene', '7157', (15, 19)) ('TP53', 'Gene', (15, 19)) ('variant', 'Var', (92, 99)) 70199 30217226 Interestingly, aside from bi-allelic MMR alteration, we observed that pathogenic germline variation in cancer predisposition genes was not associated with an earlier age of diagnosis in 8913 individuals with both germline and age of diagnosis data available. ('cancer', 'Disease', (103, 109)) ('cancer', 'Disease', 'MESH:D009369', (103, 109)) ('variation', 'Var', (90, 99)) ('cancer', 'Phenotype', 'HP:0002664', (103, 109)) 70200 30217226 To explore this further, we divided individuals into two groups: those who developed the cancer type expected given the predisposition gene altered and those with another cancer type. ('altered', 'Var', (140, 147)) ('cancer', 'Disease', 'MESH:D009369', (171, 177)) ('cancer', 'Disease', 'MESH:D009369', (89, 95)) ('cancer', 'Disease', (171, 177)) ('cancer', 'Disease', (89, 95)) ('cancer', 'Phenotype', 'HP:0002664', (171, 177)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) 70201 30217226 Using this approach, we found significant associations between germline alteration status and age of diagnosis for the expected cancer type (Fig. ('germline', 'Var', (63, 71)) ('cancer', 'Phenotype', 'HP:0002664', (128, 134)) ('cancer', 'Disease', 'MESH:D009369', (128, 134)) ('cancer', 'Disease', (128, 134)) 70204 30217226 To determine if damaging germline variation in other predisposition genes was associated with earlier age of diagnosis, we examined 75 cancer predisposition genes not included in the previous analysis. ('associated', 'Reg', (78, 88)) ('cancer', 'Disease', (135, 141)) ('germline variation', 'Var', (25, 43)) ('cancer', 'Phenotype', 'HP:0002664', (135, 141)) ('cancer', 'Disease', 'MESH:D009369', (135, 141)) 70208 30217226 However, we believe much of the variation in age of diagnosis due to germline variation lies in genes associated with prevalent cancer predisposition syndromes. ('germline variation', 'Var', (69, 87)) ('cancer', 'Phenotype', 'HP:0002664', (128, 134)) ('cancer', 'Disease', 'MESH:D009369', (128, 134)) ('cancer', 'Disease', (128, 134)) 70210 30217226 To our knowledge, our study is the first exome-wide analysis of the prevalence of bi-allelic alterations across the full spectrum of cancer types represented in TCGA and one of the first to integrate somatic methylation data for a large number of genes. ('TCGA', 'Disease', (161, 165)) ('cancer', 'Disease', 'MESH:D009369', (133, 139)) ('cancer', 'Disease', (133, 139)) ('bi-allelic alterations', 'Var', (82, 104)) ('cancer', 'Phenotype', 'HP:0002664', (133, 139)) 70211 30217226 While a diagnosis of Lynch syndrome cannot be made without a family history, we identified ten individuals with bi-allelic alteration in an MMR gene, elevated somatic MSI burden, and, in individuals with bi-allelic LOF mutations, earlier age of cancer diagnosis. ('Lynch syndrome', 'Disease', 'MESH:D003123', (21, 35)) ('cancer', 'Disease', 'MESH:D009369', (245, 251)) ('MMR gene', 'Gene', (140, 148)) ('cancer', 'Disease', (245, 251)) ('elevated', 'PosReg', (150, 158)) ('bi-allelic alteration', 'Var', (112, 133)) ('cancer', 'Phenotype', 'HP:0002664', (245, 251)) ('somatic MSI burden', 'CPA', (159, 177)) ('Lynch syndrome', 'Disease', (21, 35)) 70212 30217226 The genes harboring bi-allelic alterations by our analyses are predominantly those that are less frequently mutated in Lynch syndrome: MSH6 and PMS2. ('Lynch syndrome', 'Disease', 'MESH:D003123', (119, 133)) ('PMS2', 'Gene', (144, 148)) ('MSH6', 'Gene', (135, 139)) ('PMS2', 'Gene', '5395', (144, 148)) ('bi-allelic', 'Var', (20, 30)) ('Lynch syndrome', 'Disease', (119, 133)) ('MSH6', 'Gene', '2956', (135, 139)) 70215 30217226 The median age of cancer onset in TCGA is 60; thus, the individuals in TCGA carrying cancer predisposing variants may have genetic modifier mechanisms that delay cancer onset and severity. ('cancer', 'Disease', 'MESH:D009369', (162, 168)) ('cancer', 'Disease', (162, 168)) ('cancer', 'Disease', 'MESH:D009369', (85, 91)) ('TCGA', 'Gene', (71, 75)) ('cancer', 'Phenotype', 'HP:0002664', (18, 24)) ('cancer', 'Disease', (85, 91)) ('delay cancer', 'Disease', (156, 168)) ('cancer', 'Phenotype', 'HP:0002664', (162, 168)) ('variants', 'Var', (105, 113)) ('cancer', 'Phenotype', 'HP:0002664', (85, 91)) ('delay cancer', 'Disease', 'MESH:D009369', (156, 168)) ('cancer', 'Disease', (18, 24)) ('cancer', 'Disease', 'MESH:D009369', (18, 24)) 70216 30217226 Interestingly, proposed mechanisms of genetic compensation delaying cancer onset have been described previously both for Lynch syndrome and Li-Fraumeni syndrome. ('genetic compensation', 'Var', (38, 58)) ('cancer', 'Phenotype', 'HP:0002664', (68, 74)) ('Lynch syndrome', 'Disease', (121, 135)) ('Li-Fraumeni syndrome', 'Disease', (140, 160)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (121, 135)) ('delaying', 'NegReg', (59, 67)) ('cancer', 'Disease', 'MESH:D009369', (68, 74)) ('cancer', 'Disease', (68, 74)) ('Li-Fraumeni syndrome', 'Disease', 'MESH:D016864', (140, 160)) 70218 30217226 This observation is consistent with the previously proposed idea that bi-allelic MMR mutation is likely not the tumor-initiating event but instead acts to accelerate tumor growth (Fig. ('tumor', 'Disease', 'MESH:D009369', (166, 171)) ('tumor', 'Phenotype', 'HP:0002664', (166, 171)) ('tumor', 'Disease', 'MESH:D009369', (112, 117)) ('MMR', 'Gene', (81, 84)) ('tumor', 'Disease', (166, 171)) ('mutation', 'Var', (85, 93)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('accelerate', 'PosReg', (155, 165)) ('tumor', 'Disease', (112, 117)) ('bi-allelic', 'Var', (70, 80)) 70219 30217226 Given our observations, we propose that the less damaging Bi-Miss mutations could lead to slower tumor growth than Bi-LOF mutations. ('tumor', 'Disease', 'MESH:D009369', (97, 102)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('tumor', 'Disease', (97, 102)) ('Bi-Miss mutations', 'Var', (58, 75)) ('slower', 'NegReg', (90, 96)) 70220 30217226 demonstrated that somatic mutational signature 3 and BRCA1/2 LOH bi-allelic inactivation could be used to reclassify BRCA1/2 germline variants that were previously considered VUS. ('BRCA1/2', 'Gene', (117, 124)) ('variants', 'Var', (134, 142)) ('BRCA1/2 LOH', 'Gene', (53, 64)) ('BRCA1/2', 'Gene', (53, 60)) ('BRCA1/2', 'Gene', '672;675', (117, 124)) ('BRCA1/2', 'Gene', '672;675', (53, 60)) ('BRCA1/2 LOH', 'Gene', '672', (53, 64)) 70221 30217226 We identify two novel potentially damaging Lynch syndrome variants in MSH6. ('variants', 'Var', (58, 66)) ('MSH6', 'Gene', (70, 74)) ('Lynch syndrome', 'Disease', (43, 57)) ('MSH6', 'Gene', '2956', (70, 74)) ('damaging', 'Reg', (34, 42)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (43, 57)) 70222 30217226 Of note, the ClinVar pathogenic Lynch predisposing MSH2 variant was not present in the ANNOVAR ClinVar database despite being reported in ClinVar, highlighting the importance of manual curation of potentially pathogenic variants. ('MSH2', 'Gene', (51, 55)) ('variant', 'Var', (56, 63)) ('MSH2', 'Gene', '4436', (51, 55)) 70223 30217226 Germline MMR variants can be used to guide therapy and monitoring for patients at risk. ('variants', 'Var', (13, 21)) ('patients', 'Species', '9606', (70, 78)) ('MMR', 'Gene', (9, 12)) 70224 30217226 For example, the risk of colorectal cancer can be reduced in individuals carrying pathogenic germline MMR variants using a daily aspirin regimen. ('aspirin', 'Chemical', 'MESH:D001241', (129, 136)) ('variants', 'Var', (106, 114)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (25, 42)) ('colorectal cancer', 'Disease', (25, 42)) ('reduced', 'NegReg', (50, 57)) ('MMR', 'Gene', (102, 105)) ('cancer', 'Phenotype', 'HP:0002664', (36, 42)) ('colorectal cancer', 'Disease', 'MESH:D015179', (25, 42)) 70225 30217226 Distinguishing between sporadic cancer and cancer driven by inherited variation is important both for treatment of the individual as well as for informing relatives who may carry the same inherited predisposition. ('cancer', 'Disease', 'MESH:D009369', (32, 38)) ('cancer', 'Disease', 'MESH:D009369', (43, 49)) ('cancer', 'Disease', (43, 49)) ('cancer', 'Disease', (32, 38)) ('sporadic cancer', 'Disease', 'MESH:D009369', (23, 38)) ('variation', 'Var', (70, 79)) ('cancer', 'Phenotype', 'HP:0002664', (32, 38)) ('cancer', 'Phenotype', 'HP:0002664', (43, 49)) ('sporadic cancer', 'Disease', (23, 38)) 70226 30217226 The novel variants we discovered could increase the knowledge base of variants that predispose to cancer. ('cancer', 'Phenotype', 'HP:0002664', (98, 104)) ('variants', 'Var', (10, 18)) ('cancer', 'Disease', 'MESH:D009369', (98, 104)) ('variants', 'Var', (70, 78)) ('cancer', 'Disease', (98, 104)) 70227 30217226 Despite these constraints, we successfully identified a novel association between methylation of SHPRH and somatic MSI burden, with a particularly strong effect in uterine cancer where SHPRH methylated individuals exhibit a 2.4 fold increase in somatic MSI burden. ('cancer', 'Phenotype', 'HP:0002664', (172, 178)) ('methylation', 'Var', (82, 93)) ('somatic MSI burden', 'MPA', (107, 125)) ('SHPRH', 'Gene', '257218', (97, 102)) ('cancer', 'Disease', 'MESH:D009369', (172, 178)) ('SHPRH', 'Gene', '257218', (185, 190)) ('SHPRH', 'Gene', (185, 190)) ('somatic', 'CPA', (245, 252)) ('cancer', 'Disease', (172, 178)) ('increase', 'PosReg', (233, 241)) ('uterine cancer', 'Phenotype', 'HP:0010784', (164, 178)) ('SHPRH', 'Gene', (97, 102)) ('methylated', 'Var', (191, 201)) 70229 30217226 Knockdown of SHPRH in yeast has previously been shown to increase DNA breaks and genomic instability. ('Knockdown', 'Var', (0, 9)) ('yeast', 'Species', '4932', (22, 27)) ('SHPRH', 'Gene', (13, 18)) ('genomic instability', 'CPA', (81, 100)) ('increase', 'PosReg', (57, 65)) ('SHPRH', 'Gene', '257218', (13, 18)) ('DNA breaks', 'CPA', (66, 76)) 70232 30217226 We illustrate how differences in LOH calling methodology for germline BRCA1/2 variants can lead to conflicting conclusions about the frequency of bi-allelic alteration (Additional file 1: Figure S13). ('BRCA1/2', 'Gene', '672;675', (70, 77)) ('lead to', 'Reg', (91, 98)) ('BRCA1/2', 'Gene', (70, 77)) ('variants', 'Var', (78, 86)) 70234 30217226 In addition to individuals with potential Lynch syndrome, we identified individuals who carry germline variants that reportedly predispose to Li-Fraumeni spectrum cancers as well as pheochromocytoma and paraganglioma. ('Lynch syndrome', 'Disease', 'MESH:D003123', (42, 56)) ('predispose', 'Reg', (128, 138)) ('paraganglioma', 'Phenotype', 'HP:0002668', (203, 216)) ('Li-Fraumeni spectrum cancers', 'Disease', (142, 170)) ('paraganglioma', 'Disease', 'MESH:D010235', (203, 216)) ('cancer', 'Phenotype', 'HP:0002664', (163, 169)) ('variants', 'Var', (103, 111)) ('pheochromocytoma', 'Disease', (182, 198)) ('paraganglioma', 'Disease', (203, 216)) ('Li-Fraumeni spectrum cancers', 'Disease', 'MESH:D016864', (142, 170)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (182, 198)) ('Lynch syndrome', 'Disease', (42, 56)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (182, 198)) ('cancers', 'Phenotype', 'HP:0002664', (163, 170)) 70237 30217226 This confirms the variable penetrance of some variants associated with predisposition syndromes: a variant can predispose to one cancer type but have no significant effect on the course of disease of another cancer type. ('cancer', 'Phenotype', 'HP:0002664', (129, 135)) ('cancer', 'Disease', (208, 214)) ('predispose', 'Reg', (111, 121)) ('variant', 'Var', (99, 106)) ('cancer', 'Disease', (129, 135)) ('cancer', 'Disease', 'MESH:D009369', (129, 135)) ('cancer', 'Phenotype', 'HP:0002664', (208, 214)) ('cancer', 'Disease', 'MESH:D009369', (208, 214)) 70238 30217226 Some individuals with an inherited predisposition variant will not acquire the cancer type they are predisposed toward, but "bad luck" or environmental exposures will lead them to develop a sporadic cancer. ('cancer', 'Phenotype', 'HP:0002664', (199, 205)) ('cancer', 'Phenotype', 'HP:0002664', (79, 85)) ('variant', 'Var', (50, 57)) ('cancer', 'Disease', 'MESH:D009369', (199, 205)) ('sporadic cancer', 'Disease', 'MESH:D009369', (190, 205)) ('develop', 'PosReg', (180, 187)) ('cancer', 'Disease', (199, 205)) ('sporadic cancer', 'Disease', (190, 205)) ('cancer', 'Disease', (79, 85)) ('cancer', 'Disease', 'MESH:D009369', (79, 85)) 70239 30217226 We later showed that germline variation in known cancer predisposition genes only led to an earlier age of diagnosis only in a subset of cancer types. ('cancer', 'Phenotype', 'HP:0002664', (137, 143)) ('germline variation', 'Var', (21, 39)) ('cancer', 'Phenotype', 'HP:0002664', (49, 55)) ('cancer', 'Disease', 'MESH:D009369', (137, 143)) ('cancer', 'Disease', (137, 143)) ('cancer', 'Disease', 'MESH:D009369', (49, 55)) ('cancer', 'Disease', (49, 55)) 70240 30217226 From these observations, we conclude that germline variation has the ability to influence both somatic phenotypes and cancer development, but often, this ability is dependent on other somatic alterations or tissue type-specific processes. ('cancer', 'Disease', (118, 124)) ('somatic phenotypes', 'CPA', (95, 113)) ('germline variation', 'Var', (42, 60)) ('cancer', 'Phenotype', 'HP:0002664', (118, 124)) ('influence', 'Reg', (80, 89)) ('cancer', 'Disease', 'MESH:D009369', (118, 124)) 70250 29504908 Exome analysis of 52 CBTs revealed potential driver mutations (PDMs) in 21 genes: ARNT, BAP1, BRAF, BRCA1, BRCA2, CDKN2A, CSDE1, FGFR3, IDH1, KIF1B, KMT2D, MEN1, RET, SDHA, SDHB, SDHC, SDHD, SETD2, TP53BP1, TP53BP2, and TP53I13. ('KMT2D', 'Gene', '8085', (149, 154)) ('BRCA1', 'Gene', '672', (100, 105)) ('BRCA2', 'Gene', '675', (107, 112)) ('BRCA1', 'Gene', (100, 105)) ('IDH1', 'Gene', (136, 140)) ('TP53BP2', 'Gene', (207, 214)) ('SDHD', 'Gene', (185, 189)) ('RET', 'Gene', (162, 165)) ('BAP1', 'Gene', (88, 92)) ('CDKN2A', 'Gene', (114, 120)) ('SDHA', 'Gene', (167, 171)) ('CSDE1', 'Gene', '7812', (122, 127)) ('TP53I13', 'Gene', '90313', (220, 227)) ('SDHC', 'Gene', (179, 183)) ('SDHB', 'Gene', '6390', (173, 177)) ('SDHA', 'Gene', '6389', (167, 171)) ('TP53BP1', 'Gene', '7158', (198, 205)) ('KIF1B', 'Gene', (142, 147)) ('MEN1', 'Gene', '4221', (156, 160)) ('IDH1', 'Gene', '3417', (136, 140)) ('BRAF', 'Gene', '673', (94, 98)) ('CBTs', 'Phenotype', 'HP:0002668', (21, 25)) ('FGFR3', 'Gene', (129, 134)) ('BRAF', 'Gene', (94, 98)) ('KMT2D', 'Gene', (149, 154)) ('CDKN2A', 'Gene', '1029', (114, 120)) ('TP53BP1', 'Gene', (198, 205)) ('SETD2', 'Gene', (191, 196)) ('MEN1', 'Gene', (156, 160)) ('TP53BP2', 'Gene', '7159', (207, 214)) ('SDHB', 'Gene', (173, 177)) ('ARNT', 'Gene', '405', (82, 86)) ('FGFR3', 'Gene', '2261', (129, 134)) ('BRCA2', 'Gene', (107, 112)) ('ARNT', 'Gene', (82, 86)) ('mutations', 'Var', (52, 61)) ('SETD2', 'Gene', '29072', (191, 196)) ('SDHC', 'Gene', '6391', (179, 183)) ('KIF1B', 'Gene', '23095', (142, 147)) ('RET', 'Gene', '5979', (162, 165)) ('BAP1', 'Gene', '8314', (88, 92)) ('SDHD', 'Gene', '6392', (185, 189)) ('TP53I13', 'Gene', (220, 227)) ('CSDE1', 'Gene', (122, 127)) 70251 29504908 Exome analysis of 52 CBTs for the first time revealed the average mutation load for these tumors and also identified potential driver mutations as well as their frequencies and co-occurrence with the other PDMs. ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('tumors', 'Phenotype', 'HP:0002664', (90, 96)) ('tumors', 'Disease', (90, 96)) ('tumors', 'Disease', 'MESH:D009369', (90, 96)) ('mutation', 'Var', (66, 74)) ('mutations', 'Var', (134, 143)) ('CBTs', 'Phenotype', 'HP:0002668', (21, 25)) 70261 29504908 The majority of these familial paraganglioma syndromes are due to mutations in genes encoding distinctive subunits of the mitochondrial succinate dehydrogenase (SDH) complex. ('mutations', 'Var', (66, 75)) ('succinate dehydrogenase', 'Gene', (136, 159)) ('familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (22, 54)) ('SDH', 'Gene', (161, 164)) ('familial paraganglioma syndromes', 'Disease', (22, 54)) ('paraganglioma', 'Phenotype', 'HP:0002668', (31, 44)) ('due', 'Reg', (59, 62)) ('succinate dehydrogenase', 'Gene', '6390', (136, 159)) ('SDH', 'Gene', '6390', (161, 164)) 70263 29504908 Besides, somatic mutations in more than 30 causative genes are described as drivers for paragangliomas. ('paragangliomas', 'Disease', (88, 102)) ('paraganglioma', 'Phenotype', 'HP:0002668', (88, 101)) ('paragangliomas', 'Phenotype', 'HP:0002668', (88, 102)) ('paragangliomas', 'Disease', 'MESH:D010235', (88, 102)) ('somatic mutations', 'Var', (9, 26)) 70269 29504908 In some of them, a part of somatic mutations is generated by exposures such as tobacco smoking in lung cancer and ultraviolet light in cutaneous melanoma, or by abnormalities of DNA maintenance as a defective DNA mismatch repair in some colorectal tumors. ('colorectal tumors', 'Disease', 'MESH:D015179', (237, 254)) ('melanoma', 'Phenotype', 'HP:0002861', (145, 153)) ('cancer', 'Phenotype', 'HP:0002664', (103, 109)) ('cutaneous melanoma', 'Disease', (135, 153)) ('lung cancer', 'Disease', (98, 109)) ('colorectal tumors', 'Disease', (237, 254)) ('DNA', 'MPA', (209, 212)) ('lung cancer', 'Phenotype', 'HP:0100526', (98, 109)) ('tumors', 'Phenotype', 'HP:0002664', (248, 254)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (135, 153)) ('cutaneous melanoma', 'Disease', 'MESH:C562393', (135, 153)) ('tobacco', 'Species', '4097', (79, 86)) ('defective', 'NegReg', (199, 208)) ('lung cancer', 'Disease', 'MESH:D008175', (98, 109)) ('abnormalities', 'Var', (161, 174)) ('tumor', 'Phenotype', 'HP:0002664', (248, 253)) ('mutations', 'Var', (35, 44)) 70271 29504908 Variant filtering by frequency in healthy population can be used to exclude potentially germline mutations in absence of non-tumor tissue. ('non-tumor', 'Disease', 'MESH:D009369', (121, 130)) ('non-tumor', 'Disease', (121, 130)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('Variant', 'Var', (0, 7)) 70272 29504908 It was recently observed that the samples with high mutation load among the other samples in the same cancer type are more sensitive to immunotherapy, which can be very promising for tumor treatment. ('cancer', 'Phenotype', 'HP:0002664', (102, 108)) ('sensitive', 'Reg', (123, 132)) ('tumor', 'Disease', 'MESH:D009369', (183, 188)) ('tumor', 'Phenotype', 'HP:0002664', (183, 188)) ('cancer', 'Disease', (102, 108)) ('high mutation load', 'Var', (47, 65)) ('cancer', 'Disease', 'MESH:D009369', (102, 108)) ('tumor', 'Disease', (183, 188)) 70279 29504908 Databases dbSNP, dbNSFP, ClinVar, MutationTaster, SIFT, PolyPhen-2, FATHMM, phastCons, PhyloP, 1000 Genomes Project, ExAC, COSMIC, GO, ConsensusPathDB, and OMIM were used as information resources for identified variants. ('SIFT', 'Disease', 'None', (50, 54)) ('variants', 'Var', (211, 219)) ('SIFT', 'Disease', (50, 54)) 70286 29504908 Mutations in genes encoding succinate dehydrogenase (SDH) subunits can cause pseudohypoxic state in PGLs and PCC. ('SDH', 'Gene', (53, 56)) ('cause', 'Reg', (71, 76)) ('PGLs', 'Phenotype', 'HP:0002668', (100, 104)) ('succinate dehydrogenase', 'Gene', '6390', (28, 51)) ('SDH', 'Gene', '6390', (53, 56)) ('Mutations', 'Var', (0, 9)) ('PCC', 'Phenotype', 'HP:0002666', (109, 112)) ('succinate dehydrogenase', 'Gene', (28, 51)) ('pseudohypoxic state', 'MPA', (77, 96)) 70291 29504908 Therefore, a mutation in any of these genes, collectively termed SDHx genes, would impair the structure of the entire complex leading to oncogenesis. ('oncogenesis', 'CPA', (137, 148)) ('mutation', 'Var', (13, 21)) ('impair', 'NegReg', (83, 89)) ('SDHx', 'Chemical', '-', (65, 69)) ('structure', 'MPA', (94, 103)) 70292 29504908 Generally, germline mutations in the SDHx genes lead to heritable PGLs, PCC, and other tumors. ('PCC', 'Phenotype', 'HP:0002666', (72, 75)) ('tumor', 'Phenotype', 'HP:0002664', (87, 92)) ('PCC', 'Disease', (72, 75)) ('SDHx', 'Chemical', '-', (37, 41)) ('SDHx', 'Gene', (37, 41)) ('PGLs', 'Disease', (66, 70)) ('tumors', 'Phenotype', 'HP:0002664', (87, 93)) ('PGLs', 'Phenotype', 'HP:0002668', (66, 70)) ('germline mutations', 'Var', (11, 29)) ('tumors', 'Disease', (87, 93)) ('lead to', 'Reg', (48, 55)) ('tumors', 'Disease', 'MESH:D009369', (87, 93)) 70293 29504908 Only one potential driver missense mutation NM_004168: c.792C > A, p.(Phe264Leu) (chr5:231,012) was identified in SDHA gene. ('p.(Phe264Leu)', 'Mutation', 'rs1237513803', (67, 80)) ('SDHA', 'Gene', '6389', (114, 118)) ('NM_004168: c.792C > A', 'Mutation', 'rs1448872185', (44, 65)) ('SDHA', 'Gene', (114, 118)) ('c.792C > A', 'Var', (55, 65)) 70295 29504908 PDM NM_003000: c.541-2A > G (chr1:17,350,571, rs786201161) is located in splice-site described in ClinVar as germline mutation with pathogenic or probably pathogenic clinical significance. ('rs786201161', 'Mutation', 'rs786201161', (46, 57)) ('rs786201161', 'Var', (46, 57)) ('c.541-2A > G', 'Var', (15, 27)) ('NM_003000: c.541-2A > G', 'Mutation', 'rs786201161', (4, 27)) 70297 29504908 A mutation NM_003000: c.724C > T, p.(Arg242Cys) (chr1:17,349,144, rs786203251) is deposited as germline pathogenic one and described as a risk factor for PGLs, PCC, and hereditary gastro-intestinal stromal tumor. ('PGLs', 'Disease', (154, 158)) ('tumor', 'Phenotype', 'HP:0002664', (206, 211)) ('rs786203251', 'Mutation', 'rs786203251', (66, 77)) ('PCC', 'Disease', (160, 163)) ('p.(Arg242Cys)', 'Mutation', 'rs786203251', (34, 47)) ('PGLs', 'Phenotype', 'HP:0002668', (154, 158)) ('PCC', 'Phenotype', 'HP:0002666', (160, 163)) ('NM_003000: c.724C > T', 'Mutation', 'rs786203251', (11, 32)) ('intestinal stromal tumor', 'Phenotype', 'HP:0100723', (187, 211)) ('hereditary gastro-intestinal stromal tumor', 'Disease', 'MESH:D007414', (169, 211)) ('rs786203251', 'Var', (66, 77)) ('hereditary gastro-intestinal stromal tumor', 'Disease', (169, 211)) 70298 29504908 A mutation NM_003000: c.763A > T, p.(Lys255*) (chr1:17,349,105) is included only in Ensembl database. ('NM_003000: c.763A > T', 'Mutation', 'rs184765949', (11, 32)) ('p.(Lys255*', 'Var', (34, 44)) ('p.(Lys255*)', 'SUBSTITUTION', 'None', (34, 45)) ('c.763A > T', 'Var', (22, 32)) 70299 29504908 Two mutations, NM_003000: c.233A > G, p.(Lys78Arg) (chr1:17,359,608, rs774960237) and NM_003000: c.763A > T, p.(Lys255*) (chr1:17,349,105), do not have description of clinical effect in databases. ('c.233A > G', 'Var', (26, 36)) ('p.(Lys255*', 'Var', (109, 119)) ('p.(Lys78Arg)', 'SUBSTITUTION', 'None', (38, 50)) ('NM_003000: c.233A > G', 'Mutation', 'rs774960237', (15, 36)) ('rs774960237', 'Mutation', 'rs774960237', (69, 80)) ('NM_003000: c.763A > T', 'Mutation', 'rs184765949', (86, 107)) ('p.(Lys78Arg', 'Var', (38, 49)) ('p.(Lys255*)', 'SUBSTITUTION', 'None', (109, 120)) ('rs774960237', 'Var', (69, 80)) ('NM_003000: c.763A > T', 'Var', (86, 107)) 70300 29504908 4), only the SDHB mutation c.763A > T was identified among selected genes of interest. ('c.763A > T', 'Var', (27, 37)) ('SDHB', 'Gene', '6390', (13, 17)) ('c.763A > T', 'Mutation', 'rs184765949', (27, 37)) ('SDHB', 'Gene', (13, 17)) 70304 29504908 In sample "Pat31", it co-occurs with PDMs in IDH1 and TP53I13 genes and probably acts as the initial driver which needs to be activated with other pathogenic influences such as additional somatic mutations. ('IDH1', 'Gene', '3417', (45, 49)) ('PDMs', 'Var', (37, 41)) ('TP53I13', 'Gene', (54, 61)) ('TP53I13', 'Gene', '90313', (54, 61)) ('IDH1', 'Gene', (45, 49)) 70305 29504908 We identified three samples with SDHC mutations, one of them contained two different PDMs, NM_003001: c.224G > A, p.(Gly75Asp) (chr1: 161,310,428, rs786205147) and NM_003001: c.7G > A, p.(Ala3Thr) (chr1:161,284,202, rs748243732). ('SDHC', 'Gene', '6391', (33, 37)) ('NM_003001: c.224G > A', 'Mutation', 'rs786205147', (91, 112)) ('NM_003001: c.7G > A', 'Mutation', 'rs748243732', (164, 183)) ('NM_003001: c.7G > A', 'Var', (164, 183)) ('p.(Ala3Thr)', 'Mutation', 'rs748243732', (185, 196)) ('rs786205147', 'Mutation', 'rs786205147', (147, 158)) ('rs748243732', 'Mutation', 'rs748243732', (216, 227)) ('p.(Gly75Asp)', 'Mutation', 'rs786205147', (114, 126)) ('rs786205147', 'Var', (147, 158)) ('mutations', 'Var', (38, 47)) ('SDHC', 'Gene', (33, 37)) ('rs748243732', 'Var', (216, 227)) 70306 29504908 PDM c.224G > A is described in dbSNP as germline mutation, and it is indicated in ClinVar as probably pathogenic one, because it was found as a rare single nucleotide variant (SNV) in patient with Karney's triad (it seems to be a sporadic disease). ('c.224G > A', 'Mutation', 'rs786205147', (4, 14)) ("Karney's triad", 'Disease', (197, 211)) ('patient', 'Species', '9606', (184, 191)) ('PDM c.224G > A', 'Var', (0, 14)) 70307 29504908 PDM c.7G > A was described as a rare germline mutation with unknown clinical significance in gastro-intestinal stromal tumors and PGLs. ('tumors', 'Phenotype', 'HP:0002664', (119, 125)) ('gastro-intestinal stromal tumors', 'Disease', 'MESH:D046152', (93, 125)) ('PGLs', 'Phenotype', 'HP:0002668', (130, 134)) ('intestinal stromal tumors', 'Phenotype', 'HP:0100723', (100, 125)) ('PDM c.7G > A', 'Var', (0, 12)) ('c.7G > A', 'Mutation', 'rs748243732', (4, 12)) ('intestinal stromal tumor', 'Phenotype', 'HP:0100723', (100, 124)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('gastro-intestinal stromal tumors', 'Disease', (93, 125)) ('PGLs', 'Disease', (130, 134)) 70309 29504908 Therefore, we can suggest that patient has non-highly pathogenic mutations in both copies of SDHB or in the same copy that caused cumulative effect and became the reason for tumor growth. ('tumor', 'Disease', (174, 179)) ('SDHB', 'Gene', (93, 97)) ('tumor', 'Disease', 'MESH:D009369', (174, 179)) ('patient', 'Species', '9606', (31, 38)) ('tumor', 'Phenotype', 'HP:0002664', (174, 179)) ('SDHB', 'Gene', '6390', (93, 97)) ('mutations', 'Var', (65, 74)) 70311 29504908 One deletion undescribed in databases NM_003001: c.409delT, p.(Trp137fs) (chr1:161,332,121) was identified in gene SDHC. ('c.409delT', 'DELETION', 'None', (49, 58)) ('c.409delT', 'Var', (49, 58)) ('p.(Trp137fs)', 'Mutation', 'p.W137fsX)', (60, 72)) ('SDHC', 'Gene', (115, 119)) ('SDHC', 'Gene', '6391', (115, 119)) 70312 29504908 Moreover, the stop-codon located near the frameshift in codon 133 (p.(Arg133Ter)) is represented in databases and associated with PGLs. ('PGLs', 'Phenotype', 'HP:0002668', (130, 134)) ('p.(Arg133Ter', 'Var', (67, 79)) ('p.(Arg133Ter)', 'SUBSTITUTION', 'None', (67, 80)) ('associated', 'Reg', (114, 124)) ('frameshift', 'Var', (42, 52)) ('PGLs', 'Disease', (130, 134)) 70313 29504908 We identified SDHD mutations in seven CBT samples. ('SDHD', 'Gene', (14, 18)) ('mutations', 'Var', (19, 28)) ('SDHD', 'Gene', '6392', (14, 18)) 70314 29504908 In two samples, it was a nonsense mutation NM_003002: c.112C > T, p.(Arg38*) (chr11:111,958,640, rs80338843). ('p.(Arg38*)', 'SUBSTITUTION', 'None', (66, 76)) ('NM_003002: c.112C > T', 'Mutation', 'rs80338843', (43, 64)) ('p.(Arg38*', 'Var', (66, 75)) ('rs80338843', 'Var', (97, 107)) ('rs80338843', 'Mutation', 'rs80338843', (97, 107)) 70318 29504908 Thus, a mutation c.205G > T forming stop-codon also appears to be pathogenic one that is confirmed by data from SIFT, MutationTaster, LRT, and phastCons resources. ('c.205G > T', 'Mutation', 'rs896411432', (17, 27)) ('c.205G > T', 'Var', (17, 27)) ('SIFT', 'Disease', (112, 116)) ('pathogenic', 'Reg', (66, 76)) ('SIFT', 'Disease', 'None', (112, 116)) 70320 29504908 A similar mutation c209G > A, p.(Arg70Lys) in the same codon is described in ClinVar with unknown clinical significance. ('c209G > A', 'Var', (19, 28)) ('p.(Arg70Lys)', 'Mutation', 'rs755047928', (30, 42)) ('c209G > A', 'Mutation', 'rs755047928', (19, 28)) ('p.(Arg70Lys', 'Var', (30, 41)) 70322 29504908 This fact may suggest the pathogenic effect of mutation c210G > C. Three mutations causing frameshift, that usually has a highly pathogenic effect, were evaluated - NM_003002: c.217dupA, p.(Ser73fs) (chr11:111,959,637), NM_003002: c.220_228delGTT TTG CTCinsT, p.(Val74fs) (chr11:111,959,639), and NM_003002: c.13dupT, p.(Trp5fs) (chr.11: 111,957,643). ('c.217dupA', 'Var', (176, 185)) ('c.13dupT', 'DUPLICATION', 'None', (308, 316)) ('c210G > C', 'Mutation', 'rs1280159816', (56, 65)) ('c.220_228delGTT', 'DELETION', 'None', (231, 246)) ('p.(Trp5fs)', 'Mutation', 'p.W5fsX)', (318, 328)) ('c.217dupA', 'DUPLICATION', 'None', (176, 185)) ('p.(Val74fs)', 'Mutation', 'rs869025620', (260, 271)) ('c.220_228delGTT', 'Var', (231, 246)) ('p.(Ser73fs)', 'Mutation', 'rs876658511', (187, 198)) ('NM_003002: c.13dupT', 'Var', (297, 316)) ('c210G > C.', 'Var', (56, 66)) ('p.(Val74fs', 'Var', (260, 270)) 70323 29504908 Germline mutation in the same codon c.14G > A, leading to hereditary PCC, was described earlier. ('c.14G > A', 'Mutation', 'rs375758522', (36, 45)) ('leading to', 'Reg', (47, 57)) ('hereditary PCC', 'Disease', (58, 72)) ('c.14G > A', 'Var', (36, 45)) ('PCC', 'Phenotype', 'HP:0002666', (69, 72)) 70326 29504908 We found mutation NM_005896: c.548A > G, p.(Tyr183Cys) (chr2:209,108,301, rs34599179) in two samples and mutation NM_005896: c.94 T > G, p.(Phe32Val) (chr2:209,116,182, rs142923780) in one sample. ('p.(Phe32Val', 'Var', (137, 148)) ('rs142923780', 'Var', (169, 180)) ('p.(Tyr183Cys', 'Var', (41, 53)) ('rs142923780', 'Mutation', 'rs142923780', (169, 180)) ('NM_005896: c.548A > G', 'Var', (18, 39)) ('rs34599179', 'Mutation', 'rs34599179', (74, 84)) ('NM_005896: c.94 T > G', 'Mutation', 'rs142923780', (114, 135)) ('NM_005896: c.94 T > G', 'Var', (114, 135)) ('p.(Tyr183Cys)', 'SUBSTITUTION', 'None', (41, 54)) ('NM_005896: c.548A > G', 'Mutation', 'rs34599179', (18, 39)) ('p.(Phe32Val)', 'SUBSTITUTION', 'None', (137, 149)) 70327 29504908 In one sample, we detected mutation NM_005896: c.394C > T, p.(Arg132Cys) (chr2:209,113,113, rs121913499), which is indicated in ClinVar as a somatic pathogenic/likely pathogenic variant detected in many tumor types. ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('tumor', 'Disease', (203, 208)) ('NM_005896: c.394C > T', 'Mutation', 'rs121913499', (36, 57)) ('rs121913499', 'Mutation', 'rs121913499', (92, 103)) ('tumor', 'Disease', 'MESH:D009369', (203, 208)) ('p.(Arg132Cys)', 'Mutation', 'rs121913499', (59, 72)) ('c.394C > T', 'Var', (47, 57)) 70328 29504908 The frequency of IDH1 mutations in PCC/PGLs is low. ('PCC', 'Phenotype', 'HP:0002666', (35, 38)) ('PGLs', 'Phenotype', 'HP:0002668', (39, 43)) ('IDH1', 'Gene', (17, 21)) ('mutations', 'Var', (22, 31)) ('IDH1', 'Gene', '3417', (17, 21)) 70329 29504908 In paragangliomas, a mutation in IDH1 was first recorded during the analysis of 365 samples. ('paragangliomas', 'Disease', 'MESH:D010235', (3, 17)) ('paragangliomas', 'Disease', (3, 17)) ('IDH1', 'Gene', (33, 37)) ('paraganglioma', 'Phenotype', 'HP:0002668', (3, 16)) ('paragangliomas', 'Phenotype', 'HP:0002668', (3, 17)) ('mutation', 'Var', (21, 29)) ('IDH1', 'Gene', '3417', (33, 37)) 70334 29504908 Therefore, we can suggest that frequency of IDH1 mutations may be associated with localization of paragangliomas. ('paragangliomas', 'Phenotype', 'HP:0002668', (98, 112)) ('mutations', 'Var', (49, 58)) ('IDH1', 'Gene', (44, 48)) ('associated', 'Reg', (66, 76)) ('IDH1', 'Gene', '3417', (44, 48)) ('paragangliomas', 'Disease', 'MESH:D010235', (98, 112)) ('paragangliomas', 'Disease', (98, 112)) ('paraganglioma', 'Phenotype', 'HP:0002668', (98, 111)) 70337 29504908 We found a rare (0.0074) variant NM_001668: c.1551 T > G, p.(Asp517Glu) (chr1:150,789,864, rs10305741) of ARNT gene in two samples. ('rs10305741', 'Mutation', 'rs10305741', (91, 101)) ('ARNT', 'Gene', (106, 110)) ('NM_001668', 'Gene', (33, 42)) ('rs10305741', 'Var', (91, 101)) ('NM_001668: c.1551 T > G', 'Mutation', 'rs10305741', (33, 56)) ('p.(Asp517Glu)', 'Mutation', 'rs10305741', (58, 71)) ('c.1551 T > G', 'Var', (44, 56)) ('ARNT', 'Gene', '405', (106, 110)) ('p.(Asp517Glu', 'Var', (58, 70)) 70338 29504908 c.1551 T > G may be non-pathogenic mutation according to SIFT database. ('SIFT', 'Disease', 'None', (57, 61)) ('SIFT', 'Disease', (57, 61)) ('c.1551 T > G', 'Var', (0, 12)) ('c.1551 T > G', 'Mutation', 'rs10305741', (0, 12)) 70341 29504908 The Cosmic database describes another mutation in the same codon (c.2335C > T, p. non-pathogenic (Pro779Ser)) in lung squamous cell carcinoma. ('lung squamous cell carcinoma', 'Disease', (113, 141)) ('carcinoma', 'Phenotype', 'HP:0030731', (132, 141)) ('c.2335C > T', 'Var', (66, 77)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (118, 141)) ('c.2335C > T', 'Mutation', 'rs200078254', (66, 77)) ('Pro779Ser', 'Mutation', 'rs200078254', (98, 107)) ('lung squamous cell carcinoma', 'Disease', 'MESH:D002294', (113, 141)) 70342 29504908 However, in the case of Pro779Ser, the charge of the amino acid residue is changing in contrast to Pro779Ala. ('Pro779Ser', 'Var', (24, 33)) ('charge of the amino acid residue', 'MPA', (39, 71)) ('Pro779Ala', 'Mutation', 'rs200078254', (99, 108)) ('changing', 'Reg', (75, 83)) ('Pro779Ser', 'Mutation', 'rs200078254', (24, 33)) 70349 29504908 In one sample, we found non-pathogenic missense mutation NM_005657: c.5242C > T, p.(Arg1748Cys) (chr15:43,705,365, rs140689367) (SIFT = 0.13), highest population MAF < 0.01 described in Ensembl database. ('SIFT', 'Disease', 'None', (129, 133)) ('NM_005657: c.5242C > T', 'Mutation', 'rs140689367', (57, 79)) ('rs140689367', 'Var', (115, 126)) ('rs140689367', 'Mutation', 'rs140689367', (115, 126)) ('p.(Arg1748Cys)', 'SUBSTITUTION', 'None', (81, 95)) ('NM_005657: c.5242C > T', 'Var', (57, 79)) ('SIFT', 'Disease', (129, 133)) ('p.(Arg1748Cys', 'Var', (81, 94)) ('MAF', 'Gene', '4094', (162, 165)) ('MAF', 'Gene', (162, 165)) 70350 29504908 In two samples, we found NM_005657: c.880 T > C, p.(Ser294Pro) (chr15:43,769,851, rs61751060) non-pathogenic missense mutation (SIFT = 0.36) with global MAF of 0.003 described in Ensembl database. ('rs61751060', 'Var', (82, 92)) ('SIFT', 'Disease', (128, 132)) ('c.880 T > C', 'Var', (36, 47)) ('p.(Ser294Pro)', 'SUBSTITUTION', 'None', (49, 62)) ('rs61751060', 'Mutation', 'rs61751060', (82, 92)) ('SIFT', 'Disease', 'None', (128, 132)) ('p.(Ser294Pro', 'Var', (49, 61)) ('NM_005657: c.880 T > C', 'Mutation', 'rs61751060', (25, 47)) ('MAF', 'Gene', '4094', (153, 156)) ('MAF', 'Gene', (153, 156)) 70355 29504908 Four single nucleotide polymorphisms in TP53BP2 are significantly correlated with gastric cancer susceptibility. ('gastric cancer', 'Phenotype', 'HP:0012126', (82, 96)) ('correlated', 'Reg', (66, 76)) ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('gastric cancer', 'Disease', 'MESH:D013274', (82, 96)) ('TP53BP2', 'Gene', '7159', (40, 47)) ('gastric cancer', 'Disease', (82, 96)) ('TP53BP2', 'Gene', (40, 47)) ('single nucleotide polymorphisms', 'Var', (5, 36)) 70359 29504908 In another sample, we found mutation NM_005426: c.179C > T, p.(Ala60Val) (chr1:223,991,959, rs61749337) described in dbSNP and Ensembl databases. ('p.(Ala60Val', 'Var', (60, 71)) ('c.179C > T', 'Var', (48, 58)) ('rs61749337', 'Var', (92, 102)) ('p.(Ala60Val)', 'SUBSTITUTION', 'None', (60, 72)) ('NM_005426: c.179C > T', 'Mutation', 'rs61749337', (37, 58)) ('rs61749337', 'Mutation', 'rs61749337', (92, 102)) 70360 29504908 The mutation is pathogenic one by MutationTaster, LRT, and PolyPhen-2 predictions (MutationTaster score = 1.0, LRT prediction = 'Disease', and PolyPhen-2 score = 0.94), but it has not been described in literature (Global MAF < 0.003). ('MAF', 'Gene', '4094', (221, 224)) ('MAF', 'Gene', (221, 224)) ('pathogenic', 'Reg', (16, 26)) ('mutation', 'Var', (4, 12)) 70361 29504908 In one sample, we found mutation NM_005426: c.1515G > C, p.(Gln505His) (chr1:223,985,963, rs61824007) described in dbSNP and Ensembl databases. ('c.1515G > C', 'Var', (44, 55)) ('NM_005426: c.1515G > C', 'Mutation', 'rs61824007', (33, 55)) ('p.(Gln505His)', 'Mutation', 'rs61824007', (57, 70)) ('rs61824007', 'Mutation', 'rs61824007', (90, 100)) ('rs61824007', 'Var', (90, 100)) ('p.(Gln505His', 'Var', (57, 69)) 70365 29504908 In two samples, we found somatic missense mutation NM_138349: c.148C > G, p. (Pro50Ala) (chr17:27,896,342, rs112563021) with allele frequency 0.005810, MAF < 0.01(G). ('rs112563021', 'Mutation', 'rs112563021', (107, 118)) ('NM_138349: c.148C > G', 'Mutation', 'rs112563021', (51, 72)) ('Pro50Ala', 'Var', (78, 86)) ('NM_138349', 'Var', (51, 60)) ('c.148C > G', 'Var', (62, 72)) ('Pro50Ala', 'SUBSTITUTION', 'None', (78, 86)) ('MAF', 'Gene', '4094', (152, 155)) ('rs112563021', 'Var', (107, 118)) ('MAF', 'Gene', (152, 155)) 70368 29504908 We identified two samples with RET mutations. ('RET', 'Gene', (31, 34)) ('RET', 'Gene', '5979', (31, 34)) ('mutations', 'Var', (35, 44)) 70369 29504908 In both cases, it was NM_020630: c.2372A > T, p.(Tyr791Phe) (chr10:43,613,908, rs77724903) located in exon 13 and changing protein structure. ('p.(Tyr791Phe', 'Var', (46, 58)) ('p.(Tyr791Phe)', 'SUBSTITUTION', 'None', (46, 59)) ('c.2372A > T', 'Var', (33, 44)) ('rs77724903', 'Mutation', 'rs77724903', (79, 89)) ('NM_020630: c.2372A > T', 'Mutation', 'rs77724903', (22, 44)) ('changing', 'Reg', (114, 122)) ('rs77724903', 'Var', (79, 89)) ('protein structure', 'MPA', (123, 140)) 70370 29504908 Some data indicates that RET c.2372A > T is associated with familial medullary thyroid carcinoma (FMTC), hereditary cancer-predisposing syndrome, Hirschsprung disease, multiple endocrine neoplasia (MEN) including types 1, 2a, 2b, and 4, pheochromocytoma, and renal adysplasia. ('RET', 'Gene', '5979', (25, 28)) ('renal adysplasia', 'Disease', 'MESH:C563261', (259, 275)) ('c.2372A > T', 'Var', (29, 40)) ('neoplasia', 'Phenotype', 'HP:0002664', (187, 196)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (168, 196)) ('Hirschsprung disease', 'Phenotype', 'HP:0002251', (146, 166)) ('carcinoma', 'Phenotype', 'HP:0030731', (87, 96)) ('multiple endocrine neoplasia', 'Disease', (168, 196)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (177, 196)) ('RET', 'Gene', (25, 28)) ('hereditary cancer', 'Disease', (105, 122)) ('Hirschsprung disease', 'Disease', (146, 166)) ('Hirschsprung disease', 'Disease', 'MESH:D006627', (146, 166)) ('MEN', 'Species', '9606', (198, 201)) ('c.2372A > T', 'Mutation', 'rs77724903', (29, 40)) ('renal adysplasia', 'Phenotype', 'HP:0000110', (259, 275)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (79, 96)) ('hereditary cancer', 'Disease', 'MESH:D009369', (105, 122)) ('cancer', 'Phenotype', 'HP:0002664', (116, 122)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (237, 253)) ('thyroid carcinoma', 'Disease', (79, 96)) ('associated', 'Reg', (44, 54)) ('renal adysplasia', 'Disease', (259, 275)) ('pheochromocytoma', 'Disease', (237, 253)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (237, 253)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (69, 96)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (79, 96)) 70377 29504908 Missense mutations in the KIF1B gene were found for the first time in two PCC samples in 2008. ('KIF1B', 'Gene', '23095', (26, 31)) ('PCC', 'Phenotype', 'HP:0002666', (74, 77)) ('found', 'Reg', (42, 47)) ('KIF1B', 'Gene', (26, 31)) ('Missense mutations', 'Var', (0, 18)) 70378 29504908 Later, a group of relatives was found that increased probability of developing not only PCC, but also neuroblastomas, ganglioneuromas, and lung tumors for germline mutations in the KIF1B gene. ('tumors', 'Phenotype', 'HP:0002664', (144, 150)) ('lung tumors', 'Disease', 'MESH:D008175', (139, 150)) ('KIF1B', 'Gene', (181, 186)) ('KIF1B', 'Gene', '23095', (181, 186)) ('lung tumors', 'Disease', (139, 150)) ('PCC', 'Disease', (88, 91)) ('ganglioneuromas', 'Disease', (118, 133)) ('neuroblastomas', 'Disease', 'MESH:D009447', (102, 116)) ('lung tumors', 'Phenotype', 'HP:0100526', (139, 150)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) ('PCC', 'Phenotype', 'HP:0002666', (88, 91)) ('neuroblastomas', 'Disease', (102, 116)) ('germline mutations', 'Var', (155, 173)) ('developing', 'PosReg', (68, 78)) ('ganglioneuromas', 'Disease', 'MESH:D005729', (118, 133)) 70380 29504908 In this work, we identified two KIF1B mutations NM_015074: c.4717C > T, p.(Pro1573Ser) (chr1:10,431,229) and NM_015074: c.1579G > C, p.(Gly527Arg) (chr1:10,355,764). ('NM_015074: c.4717C > T', 'Var', (48, 70)) ('p.(Gly527Arg)', 'Mutation', 'rs745444863', (133, 146)) ('p.(Pro1573Ser', 'Var', (72, 85)) ('NM_015074: c.1579G > C', 'Var', (109, 131)) ('p.(Gly527Arg', 'Var', (133, 145)) ('NM_015074: c.1579G > C', 'Mutation', 'rs1060499983', (109, 131)) ('NM_015074: c.4717C > T', 'Mutation', 'c.4717C>T', (48, 70)) ('KIF1B', 'Gene', (32, 37)) ('KIF1B', 'Gene', '23095', (32, 37)) ('p.(Pro1573Ser)', 'SUBSTITUTION', 'None', (72, 86)) 70381 29504908 Both germline and somatic mutations in KIF1B gene have been found in pheochromocytoma, occasionally occurring in combinations with mutations in other genes, such as NF1, RET, VHL, and SDHx. ('RET', 'Gene', (170, 173)) ('RET', 'Gene', '5979', (170, 173)) ('mutations', 'Var', (26, 35)) ('VHL', 'Gene', (175, 178)) ('found', 'Reg', (60, 65)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (69, 85)) ('KIF1B', 'Gene', (39, 44)) ('VHL', 'Gene', '7428', (175, 178)) ('NF1', 'Gene', (165, 168)) ('KIF1B', 'Gene', '23095', (39, 44)) ('pheochromocytoma', 'Disease', (69, 85)) ('NF1', 'Gene', '4763', (165, 168)) ('SDHx', 'Chemical', '-', (184, 188)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (69, 85)) 70382 29504908 In our PGL cohort, one of two samples also has additional PDM in BAP1 gene. ('BAP1', 'Gene', '8314', (65, 69)) ('PDM', 'Var', (58, 61)) ('BAP1', 'Gene', (65, 69)) 70389 29504908 In one sample, we identified mutation NM_058197: c.187G > C, p.(Gly63Arg) (chr9:21,974,640, rs45456595). ('p.(Gly63Arg', 'Var', (61, 72)) ('p.(Gly63Arg)', 'SUBSTITUTION', 'None', (61, 73)) ('c.187G > C', 'Var', (49, 59)) ('rs45456595', 'Var', (92, 102)) ('NM_058197: c.187G > C', 'Mutation', 'rs45456595', (38, 59)) ('rs45456595', 'Mutation', 'rs45456595', (92, 102)) 70392 29504908 Mutations in BRAF gene were initially identified in cancer types that are commonly associated with mutations in different isoforms of RAS, such as malignant melanoma and well-differentiated thyroid cancer. ('thyroid cancer', 'Phenotype', 'HP:0002890', (190, 204)) ('malignant melanoma', 'Phenotype', 'HP:0002861', (147, 165)) ('malignant melanoma', 'Disease', 'MESH:D008545', (147, 165)) ('cancer', 'Disease', 'MESH:D009369', (52, 58)) ('cancer', 'Disease', (198, 204)) ('BRAF', 'Gene', '673', (13, 17)) ('BRAF', 'Gene', (13, 17)) ('Mutations', 'Var', (0, 9)) ('melanoma', 'Phenotype', 'HP:0002861', (157, 165)) ('cancer', 'Phenotype', 'HP:0002664', (198, 204)) ('identified', 'Reg', (38, 48)) ('thyroid cancer', 'Disease', (190, 204)) ('malignant melanoma', 'Disease', (147, 165)) ('cancer', 'Disease', (52, 58)) ('cancer', 'Disease', 'MESH:D009369', (198, 204)) ('cancer', 'Phenotype', 'HP:0002664', (52, 58)) ('thyroid cancer', 'Disease', 'MESH:D013964', (190, 204)) ('mutations', 'Var', (99, 108)) ('associated', 'Reg', (83, 93)) 70393 29504908 We identified only one sample with a non-canonical BRAF mutation NM_00433: c.533G > A, p.(Arg178Gln) (chr7:140,508,767, rs746348396), which changes protein structure. ('p.(Arg178Gln', 'Var', (87, 99)) ('protein structure', 'MPA', (148, 165)) ('rs746348396', 'Mutation', 'rs746348396', (120, 131)) ('rs746348396', 'Var', (120, 131)) ('changes', 'Reg', (140, 147)) ('c.533G > A', 'Var', (75, 85)) ('BRAF', 'Gene', '673', (51, 55)) ('NM_00433: c.533G > A', 'Mutation', 'rs746348396', (65, 85)) ('p.(Arg178Gln)', 'Mutation', 'rs746348396', (87, 100)) ('BRAF', 'Gene', (51, 55)) 70397 29504908 Germline mutations in these genes are associated with hereditary breast and ovarian cancers, Fallopian tube, prostate, peritoneal, and pancreatic cancers. ('Germline mutations', 'Var', (0, 18)) ('pancreatic cancers', 'Disease', 'MESH:D010190', (135, 153)) ('pancreatic cancers', 'Disease', (135, 153)) ('prostate', 'Disease', (109, 117)) ('peritoneal', 'Disease', (119, 129)) ('associated', 'Reg', (38, 48)) ('cancers', 'Phenotype', 'HP:0002664', (84, 91)) ('cancers', 'Phenotype', 'HP:0002664', (146, 153)) ('pancreatic cancers', 'Phenotype', 'HP:0002894', (135, 153)) ('hereditary breast and ovarian cancers', 'Disease', 'MESH:D061325', (54, 91)) ('cancer', 'Phenotype', 'HP:0002664', (84, 90)) ('cancer', 'Phenotype', 'HP:0002664', (146, 152)) ('ovarian cancers', 'Phenotype', 'HP:0100615', (76, 91)) ('Fallopian tube', 'Disease', (93, 107)) 70399 29504908 PDM NM_003000: c.5019G > A, p.(Met1673Ile) (chr17:41,222,975, rs1799967) was identified in BRCA1 gene. ('BRCA1', 'Gene', (91, 96)) ('NM_003000: c.5019G > A', 'Mutation', 'rs1799967', (4, 26)) ('rs1799967', 'Mutation', 'rs1799967', (62, 71)) ('p.(Met1673Ile)', 'SUBSTITUTION', 'None', (28, 42)) ('c.5019G > A', 'Var', (15, 26)) ('p.(Met1673Ile', 'Var', (28, 41)) ('BRCA1', 'Gene', '672', (91, 96)) 70400 29504908 In one sample, a rare mutation NM_000059: c.4585G > A, p.(Gly1529Arg) (chr13:32,913,077, rs28897728) was evaluated in BRCA2 gene. ('c.4585G > A', 'Var', (42, 53)) ('BRCA2', 'Gene', (118, 123)) ('rs28897728', 'Var', (89, 99)) ('NM_000059: c.4585G > A', 'Mutation', 'rs28897728', (31, 53)) ('rs28897728', 'Mutation', 'rs28897728', (89, 99)) ('BRCA2', 'Gene', '675', (118, 123)) ('p.(Gly1529Arg)', 'Mutation', 'rs28897728', (55, 69)) 70403 29504908 In this gene, we identified a mutation NM_007158: c.416C > T, p.(Ala139Val) (chr1:115,277,136, rs151170620). ('rs151170620', 'Var', (95, 106)) ('NM_007158: c.416C > T', 'Mutation', 'rs151170620', (39, 60)) ('rs151170620', 'Mutation', 'rs151170620', (95, 106)) ('p.(Ala139Val)', 'Mutation', 'rs151170620', (62, 75)) ('c.416C > T', 'Var', (50, 60)) 70406 29504908 Germline mutations in the BAP1 are associated with increased risks of malignant mesothelioma as well as uveal and cutaneous melanoma, whereas somatic mutations in this gene have been detected in various types of tumors including PGLs. ('Germline mutations', 'Var', (0, 18)) ('BAP1', 'Gene', (26, 30)) ('malignant mesothelioma', 'Disease', (70, 92)) ('melanoma', 'Phenotype', 'HP:0002861', (124, 132)) ('tumors', 'Disease', (212, 218)) ('uveal', 'Disease', (104, 109)) ('associated', 'Reg', (35, 45)) ('cutaneous melanoma', 'Disease', (114, 132)) ('tumors', 'Disease', 'MESH:D009369', (212, 218)) ('cutaneous melanoma', 'Disease', 'MESH:C562393', (114, 132)) ('malignant mesothelioma', 'Disease', 'MESH:C562839', (70, 92)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (114, 132)) ('tumors', 'Phenotype', 'HP:0002664', (212, 218)) ('malignant mesothelioma', 'Phenotype', 'HP:0100001', (70, 92)) ('BAP1', 'Gene', '8314', (26, 30)) ('tumor', 'Phenotype', 'HP:0002664', (212, 217)) ('PGLs', 'Phenotype', 'HP:0002668', (229, 233)) 70411 29504908 Germline mutations in the MEN1 gene may lead to multiple endocrine neoplasia type 1 (MEN1 syndrome), and be associated with the development of over 20 types of endocrine and non-endocrine tumors including PCC and PGLs. ('Germline mutations', 'Var', (0, 18)) ('non-endocrine tumors', 'Disease', (174, 194)) ('neoplasia', 'Phenotype', 'HP:0002664', (67, 76)) ('MEN1', 'Gene', (26, 30)) ('tumors', 'Phenotype', 'HP:0002664', (188, 194)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (57, 76)) ('PGLs', 'Phenotype', 'HP:0002668', (213, 217)) ('tumor', 'Phenotype', 'HP:0002664', (188, 193)) ('multiple endocrine neoplasia type 1', 'Gene', (48, 83)) ('multiple endocrine neoplasia type 1', 'Gene', '4221', (48, 83)) ('MEN1', 'Gene', '4221', (85, 89)) ('PGLs', 'Disease', (213, 217)) ('MEN1 syndrome', 'Disease', (85, 98)) ('PCC', 'Phenotype', 'HP:0002666', (205, 208)) ('PCC', 'Disease', (205, 208)) ('non-endocrine tumors', 'Disease', 'MESH:C536126', (174, 194)) ('MEN1', 'Gene', (85, 89)) ('lead to', 'Reg', (40, 47)) ('MEN1 syndrome', 'Disease', 'MESH:D018761', (85, 98)) ('associated with', 'Reg', (108, 123)) ('MEN1', 'Gene', '4221', (26, 30)) 70412 29504908 Mutation NM_130799: c.512G > A, p.(Arg171Gln) (chr11:64,575,505, rs607969) was determined in one sample. ('rs607969', 'Var', (65, 73)) ('p.(Arg171Gln', 'Var', (32, 44)) ('p.(Arg171Gln)', 'Mutation', 'rs607969', (32, 45)) ('rs607969', 'Mutation', 'rs607969', (65, 73)) ('NM_130799: c.512G > A', 'Mutation', 'rs607969', (9, 30)) 70415 29504908 Although mutations in MEN1 gene are rare, they represent important objects of screening as they provide the means of early diagnostics of MEN1 syndrome. ('MEN1', 'Gene', (138, 142)) ('mutations', 'Var', (9, 18)) ('MEN1', 'Gene', '4221', (138, 142)) ('MEN1 syndrome', 'Disease', (138, 151)) ('MEN1 syndrome', 'Disease', 'MESH:D018761', (138, 151)) ('MEN1', 'Gene', (22, 26)) ('MEN1', 'Gene', '4221', (22, 26)) 70416 29504908 The SETD2 protein is a histone methyltransferase that is specific for lysine-36 histone H3, and methylation of this residue is associated with chromatin activation. ('associated', 'Reg', (127, 137)) ('SETD2', 'Gene', '29072', (4, 9)) ('SETD2', 'Gene', (4, 9)) ('methylation', 'Var', (96, 107)) ('chromatin activation', 'MPA', (143, 163)) ('lysine', 'Chemical', 'MESH:D008239', (70, 76)) 70417 29504908 We found PDM NM_014159: c.3229A > G, p.(Thr1077Ala) (chr3:47,162,897, rs114719990) in one CBT sample. ('NM_014159: c.3229A > G', 'Mutation', 'rs114719990', (13, 35)) ('rs114719990', 'Var', (70, 81)) ('rs114719990', 'Mutation', 'rs114719990', (70, 81)) ('p.(Thr1077Ala)', 'SUBSTITUTION', 'None', (37, 51)) ('p.(Thr1077Ala', 'Var', (37, 50)) 70419 29504908 Based on SIFT, MutationTaster, LRT, and PolyPhen-2 algorithms, c.3229A > G might be highly pathogenic mutation. ('c.3229A > G', 'Mutation', 'rs114719990', (63, 74)) ('SIFT', 'Disease', (9, 13)) ('c.3229A > G', 'Var', (63, 74)) ('pathogenic', 'Reg', (91, 101)) ('SIFT', 'Disease', 'None', (9, 13)) 70422 29504908 Mutations in this gene lead to craniosynostosis and multiple types of skeletal dysplasia. ('lead to', 'Reg', (23, 30)) ('skeletal dysplasia', 'Phenotype', 'HP:0002652', (70, 88)) ('craniosynostosis', 'Phenotype', 'HP:0001363', (31, 47)) ('skeletal dysplasia', 'Disease', (70, 88)) ('Mutations', 'Var', (0, 9)) ('skeletal dysplasia', 'Disease', 'MESH:C535858', (70, 88)) ('craniosynostosis', 'Disease', (31, 47)) ('craniosynostosis', 'Disease', 'MESH:D003398', (31, 47)) ('multiple types', 'Disease', (52, 66)) 70423 29504908 We evaluated PDM NM_000142:c.1150 T > C, p.(Phe384Leu) (chr4:1,806,131, rs17881656) in one sample. ('rs17881656', 'Mutation', 'rs17881656', (72, 82)) ('NM_000142:c.1150 T > C', 'Mutation', 'rs17881656', (17, 39)) ('p.(Phe384Leu)', 'SUBSTITUTION', 'None', (41, 54)) ('c.1150 T > C', 'Var', (27, 39)) ('p.(Phe384Leu', 'Var', (41, 53)) 70434 29504908 Inherited HNPGLs are mostly caused by mutations in SDHD, SDHB, and SDHC genes. ('HNPGLs', 'Disease', (10, 16)) ('SDHC', 'Gene', '6391', (67, 71)) ('SDHB', 'Gene', '6390', (57, 61)) ('SDHB', 'Gene', (57, 61)) ('SDHD', 'Gene', '6392', (51, 55)) ('caused by', 'Reg', (28, 37)) ('mutations', 'Var', (38, 47)) ('HNPGLs', 'Phenotype', 'HP:0002864', (10, 16)) ('SDHD', 'Gene', (51, 55)) ('SDHC', 'Gene', (67, 71)) ('HNPGLs', 'Chemical', '-', (10, 16)) ('PGLs', 'Phenotype', 'HP:0002668', (12, 16)) 70435 29504908 HNPGLs are rarely associated with mutations of VHL, RET, and NF1. ('PGLs', 'Phenotype', 'HP:0002668', (2, 6)) ('RET', 'Gene', '5979', (52, 55)) ('NF1', 'Gene', (61, 64)) ('associated', 'Reg', (18, 28)) ('VHL', 'Gene', (47, 50)) ('NF1', 'Gene', '4763', (61, 64)) ('HNPGLs', 'Phenotype', 'HP:0002864', (0, 6)) ('VHL', 'Gene', '7428', (47, 50)) ('HNPGLs', 'Chemical', '-', (0, 6)) ('RET', 'Gene', (52, 55)) ('mutations', 'Var', (34, 43)) ('HNPGLs', 'Disease', (0, 6)) 70436 29504908 In addition, it was shown that multiple HNPGLs are common in patients with SDHD mutations, while malignant head and neck paragangliomas are mostly seen in patients with SDHB mutations. ('common', 'Reg', (51, 57)) ('SDHB', 'Gene', '6390', (169, 173)) ('neck paragangliomas', 'Disease', (116, 135)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (116, 135)) ('SDHB', 'Gene', (169, 173)) ('mutations', 'Var', (80, 89)) ('SDHD', 'Gene', '6392', (75, 79)) ('patients', 'Species', '9606', (61, 69)) ('PGLs', 'Phenotype', 'HP:0002668', (42, 46)) ('paragangliomas', 'Phenotype', 'HP:0002668', (121, 135)) ('HNPGLs', 'Chemical', '-', (40, 46)) ('patients', 'Species', '9606', (155, 163)) ('HNPGLs', 'Phenotype', 'HP:0002864', (40, 46)) ('SDHD', 'Gene', (75, 79)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (116, 135)) ('paraganglioma', 'Phenotype', 'HP:0002668', (121, 134)) ('multiple HNPGLs', 'Disease', (31, 46)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (107, 135)) 70438 29504908 SDHD mutations induced HNPGLs about 20 years earlier compared with SDHB mutations. ('induced', 'Reg', (15, 22)) ('SDHB', 'Gene', '6390', (67, 71)) ('HNPGLs', 'Phenotype', 'HP:0002864', (23, 29)) ('mutations', 'Var', (5, 14)) ('HNPGLs', 'Chemical', '-', (23, 29)) ('SDHB', 'Gene', (67, 71)) ('PGLs', 'Phenotype', 'HP:0002668', (25, 29)) ('SDHD', 'Gene', '6392', (0, 4)) ('HNPGLs', 'Disease', (23, 29)) ('SDHD', 'Gene', (0, 4)) 70439 29504908 And only correlation of germline SDHB mutations with tumor aggressiveness is indicated as an established fact. ('SDHB', 'Gene', '6390', (33, 37)) ('tumor aggressiveness', 'Disease', 'MESH:D001523', (53, 73)) ('SDHB', 'Gene', (33, 37)) ('mutations', 'Var', (38, 47)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('tumor aggressiveness', 'Disease', (53, 73)) ('aggressiveness', 'Phenotype', 'HP:0000718', (59, 73)) 70441 29504908 The frequencies of PDMs in different cancer-associated genes and mutation load were determined in CBTs from Russian patients. ('PDMs', 'Var', (19, 23)) ('cancer', 'Disease', 'MESH:D009369', (37, 43)) ('cancer', 'Disease', (37, 43)) ('patients', 'Species', '9606', (116, 124)) ('cancer', 'Phenotype', 'HP:0002664', (37, 43)) ('CBTs', 'Phenotype', 'HP:0002668', (98, 102)) 70443 29504908 In total, SDHx mutations span 26% of patients, but in some cases, SDHx mutations co-occur with PDMs in other genes. ('patients', 'Species', '9606', (37, 45)) ('mutations', 'Var', (15, 24)) ('SDHx', 'Gene', (10, 14)) ('mutations', 'Var', (71, 80)) ('SDHx', 'Chemical', '-', (66, 70)) ('SDHx', 'Chemical', '-', (10, 14)) ('SDHx', 'Gene', (66, 70)) 70444 29504908 Mutations in SDHx genes increase the stability of HIFs and, thus, the expression of their targets through the intracellular accumulation of their substrate, succinate. ('increase', 'PosReg', (24, 32)) ('succinate', 'MPA', (157, 166)) ('SDHx', 'Chemical', '-', (13, 17)) ('SDHx', 'Gene', (13, 17)) ('intracellular accumulation of', 'MPA', (110, 139)) ('succinate', 'Chemical', 'MESH:D019802', (157, 166)) ('expression', 'MPA', (70, 80)) ('Mutations', 'Var', (0, 9)) ('stability', 'MPA', (37, 46)) 70445 29504908 We did not identify mutations in NF1, VHL, MEN1, SDHAF2, and TMEM127 genes, which are indicated in many papers as causative for carotid PGLs. ('carotid PGLs', 'Disease', (128, 140)) ('NF1', 'Gene', (33, 36)) ('SDHAF2', 'Gene', '54949', (49, 55)) ('PGLs', 'Phenotype', 'HP:0002668', (136, 140)) ('SDHAF2', 'Gene', (49, 55)) ('NF1', 'Gene', '4763', (33, 36)) ('MEN1', 'Gene', (43, 47)) ('VHL', 'Gene', (38, 41)) ('TMEM127', 'Gene', (61, 68)) ('MEN1', 'Gene', '4221', (43, 47)) ('TMEM127', 'Gene', '55654', (61, 68)) ('causative', 'Reg', (114, 123)) ('VHL', 'Gene', '7428', (38, 41)) ('mutations', 'Var', (20, 29)) 70449 29504908 We suggest that two or more non-highly pathogenic mutations demonstrate cumulative effect and can cause tumor growth in many cases. ('cause', 'Reg', (98, 103)) ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('mutations', 'Var', (50, 59)) ('tumor', 'Disease', (104, 109)) ('tumor', 'Disease', 'MESH:D009369', (104, 109)) 70457 29504908 Exome analysis of CBTs revealed the average mutation load for these tumors, identified potentially driver mutations as well as their frequencies and co-occurrence with other PDMs. ('CBTs', 'Phenotype', 'HP:0002668', (18, 22)) ('mutation', 'Var', (44, 52)) ('tumors', 'Disease', (68, 74)) ('tumors', 'Disease', 'MESH:D009369', (68, 74)) ('tumors', 'Phenotype', 'HP:0002664', (68, 74)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) 70458 29504908 Evaluation of driver mutations leading to tumor growth, progression, and differences in clinicopathologic characteristics, as well as identification of highly mutated samples provide opportunities to develop new approaches for targeted therapy and immunotherapy of the disease, and increase the management level of CBTs. ('tumor', 'Disease', (42, 47)) ('increase', 'PosReg', (282, 290)) ('tumor', 'Disease', 'MESH:D009369', (42, 47)) ('CBTs', 'Disease', (315, 319)) ('CBTs', 'Phenotype', 'HP:0002668', (315, 319)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) ('mutations', 'Var', (21, 30)) 70459 29504908 CBT Carotid body tumor HNPGLs Head and neck paragangliomas ML Mutation load PCC Pheochromocytoma PDM Potential driver mutation PGLs Paragangliomas SDHx Genes encoding components of succinate-dehydrogenase complex. ('PCC', 'Phenotype', 'HP:0002666', (76, 79)) ('PGLs', 'Phenotype', 'HP:0002668', (127, 131)) ('SDHx', 'Gene', (147, 151)) ('Mutation', 'Var', (62, 70)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (39, 58)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (39, 58)) ('HNPGLs', 'Phenotype', 'HP:0002864', (23, 29)) ('SDHx', 'Chemical', '-', (147, 151)) ('Paragangliomas', 'Disease', (132, 146)) ('Paragangliomas', 'Disease', 'MESH:D010235', (132, 146)) ('succinate', 'Chemical', 'MESH:D019802', (181, 190)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (80, 96)) ('Carotid body tumor', 'Disease', (4, 22)) ('mutation', 'Var', (118, 126)) ('Carotid body tumor', 'Disease', 'MESH:D002345', (4, 22)) ('paragangliomas', 'Phenotype', 'HP:0002668', (44, 58)) ('paraganglioma', 'Phenotype', 'HP:0002668', (44, 57)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (132, 146)) ('neck paragangliomas', 'Disease', (39, 58)) ('Pheochromocytoma', 'Disease', (80, 96)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('HNPGLs', 'Chemical', '-', (23, 29)) ('PGLs', 'Phenotype', 'HP:0002668', (25, 29)) ('Carotid body tumor', 'Phenotype', 'HP:0002668', (4, 22)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) 70474 28162975 Inherited mutations have been identified in more than 15 well-characterized genes, most commonly in VHL, SDHB, SDHD, NF1 and RET. ('NF1', 'Gene', '4763', (117, 120)) ('SDHB', 'Gene', '6390', (105, 109)) ('RET', 'Gene', '5979', (125, 128)) ('SDHB', 'Gene', (105, 109)) ('VHL', 'Gene', '7428', (100, 103)) ('SDHD', 'Gene', '6392', (111, 115)) ('VHL', 'Gene', (100, 103)) ('mutations', 'Var', (10, 19)) ('RET', 'Gene', (125, 128)) ('NF1', 'Gene', (117, 120)) ('SDHD', 'Gene', (111, 115)) 70475 28162975 Markers of metastatic disease are limited, including germline SDHB mutations, extra-adrenal location, tumor size and elevated plasma methoxytyramine levels Although the inherited basis of PCC/PGLs has been well characterized, somatic profiles have not been well delineated. ('plasma methoxytyramine levels', 'MPA', (126, 155)) ('SDHB', 'Gene', '6390', (62, 66)) ('tumor', 'Disease', 'MESH:D009369', (102, 107)) ('mutations', 'Var', (67, 76)) ('PCC', 'Gene', (189, 192)) ('Mark', 'Gene', (0, 4)) ('PCC', 'Gene', '1421', (189, 192)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('metastatic disease', 'Disease', (11, 29)) ('PGLs', 'Phenotype', 'HP:0002668', (193, 197)) ('elevated', 'PosReg', (117, 125)) ('tumor', 'Disease', (102, 107)) ('Mark', 'Gene', '4139', (0, 4)) ('SDHB', 'Gene', (62, 66)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (133, 148)) 70476 28162975 To date, limited somatic profiling has identified mutations at various frequencies in several genes including EPAS1 (HIF2alpha), RET, VHL, RAS, NF1 and ATRX and has identified recurrent somatic copy number alterations. ('HIF2alpha', 'Gene', (117, 126)) ('VHL', 'Gene', '7428', (134, 137)) ('RET', 'Gene', (129, 132)) ('mutations', 'Var', (50, 59)) ('NF1', 'Gene', '4763', (144, 147)) ('EPAS1', 'Gene', '2034', (110, 115)) ('VHL', 'Gene', (134, 137)) ('HIF2alpha', 'Gene', '2034', (117, 126)) ('RET', 'Gene', '5979', (129, 132)) ('RAS', 'Gene', (139, 142)) ('ATRX', 'Gene', (152, 156)) ('EPAS1', 'Gene', (110, 115)) ('NF1', 'Gene', (144, 147)) ('ATRX', 'Gene', '546', (152, 156)) 70488 28162975 Our analysis strategy involved a systematic interrogation by platform to identify genomic alterations in PCC/PGL, including germline mutations, somatic mutations, fusion genes and copy number alterations. ('fusion genes', 'Var', (163, 175)) ('PCC', 'Gene', '1421', (105, 108)) ('PCC', 'Gene', (105, 108)) ('copy number alterations', 'Var', (180, 203)) 70489 28162975 Multi-platform integration and computational analysis was then performed to (1) characterize the broad molecular correlates of prominent driver alterations; (2) identify a PCC/PGL molecular subtype classification; (3) identify disrupted pathways; and (4) identify molecular discriminants of metastatic disease. ('alterations', 'Var', (144, 155)) ('PCC', 'Gene', '1421', (172, 175)) ('PCC', 'Gene', (172, 175)) ('metastatic disease', 'Disease', (291, 309)) 70490 28162975 Because susceptibility gene mutations are prevalent in patients with PCC/PGLs, we first analyzed DNA exome sequencing of normal specimens to identify germline mutations in the cohort. ('prevalent', 'Reg', (42, 51)) ('PCC', 'Gene', '1421', (69, 72)) ('PGLs', 'Phenotype', 'HP:0002668', (73, 77)) ('PCC', 'Gene', (69, 72)) ('patients', 'Species', '9606', (55, 63)) ('mutations', 'Var', (28, 37)) 70492 28162975 SDHB (9%), RET (6%), VHL (4%) and NF1 (3%) exhibited the highest rates of germline mutation. ('RET', 'Gene', '5979', (11, 14)) ('germline mutation', 'Var', (74, 91)) ('RET', 'Gene', (11, 14)) ('SDHB', 'Gene', '6390', (0, 4)) ('VHL', 'Gene', (21, 24)) ('NF1', 'Gene', (34, 37)) ('VHL', 'Gene', '7428', (21, 24)) ('SDHB', 'Gene', (0, 4)) ('NF1', 'Gene', '4763', (34, 37)) 70496 28162975 Somatic HRAS mutations clustered at the Q61 hotspot, known to activate the MAPK signaling pathway. ('activate', 'PosReg', (62, 70)) ('HRAS', 'Gene', '3265', (8, 12)) ('HRAS', 'Gene', (8, 12)) ('MAPK signaling pathway', 'Pathway', (75, 97)) ('mutations', 'Var', (13, 22)) 70497 28162975 Somatic EPAS1 (HIF2alpha) mutations occurred at hotspots (A530, P531, Y532) associated with increased HIF stabilization and transcriptional activity. ('EPAS1', 'Gene', (8, 13)) ('Y532', 'Var', (70, 74)) ('A530', 'Var', (58, 62)) ('HIF2alpha', 'Gene', (15, 24)) ('transcriptional activity', 'CPA', (124, 148)) ('P531', 'Var', (64, 68)) ('mutations', 'Var', (26, 35)) ('increased', 'PosReg', (92, 101)) ('HIF stabilization', 'CPA', (102, 119)) ('EPAS1', 'Gene', '2034', (8, 13)) ('HIF2alpha', 'Gene', '2034', (15, 24)) 70498 28162975 Analysis for known hotspots and cancer relevant genes identified BRAF (p.G469A), IDH1 (p.R132C), FGFR1, VHL, ATRX, TP53, SETD2 and ARNT mutations. ('VHL', 'Gene', '7428', (104, 107)) ('ATRX', 'Gene', '546', (109, 113)) ('p.R132C', 'Var', (87, 94)) ('IDH1', 'Gene', (81, 85)) ('mutations', 'Var', (136, 145)) ('SETD2', 'Gene', (121, 126)) ('cancer', 'Disease', (32, 38)) ('TP53', 'Gene', (115, 119)) ('p.G469A', 'Var', (71, 78)) ('SETD2', 'Gene', '29072', (121, 126)) ('cancer', 'Phenotype', 'HP:0002664', (32, 38)) ('IDH1', 'Gene', '3417', (81, 85)) ('FGFR1', 'Gene', '2260', (97, 102)) ('p.G469A', 'Mutation', 'rs121913355', (71, 78)) ('ARNT', 'Gene', '405', (131, 135)) ('ARNT', 'Gene', (131, 135)) ('VHL', 'Gene', (104, 107)) ('cancer', 'Disease', 'MESH:D009369', (32, 38)) ('TP53', 'Gene', '7157', (115, 119)) ('p.R132C', 'Mutation', 'rs121913499', (87, 94)) ('BRAF', 'Gene', '673', (65, 69)) ('FGFR1', 'Gene', (97, 102)) ('BRAF', 'Gene', (65, 69)) ('ATRX', 'Gene', (109, 113)) 70499 28162975 We observed that three genes with pathogenic germline mutations also had somatic mutations in the cohort: RET, NF1 and VHL. ('NF1', 'Gene', (111, 114)) ('NF1', 'Gene', '4763', (111, 114)) ('VHL', 'Gene', (119, 122)) ('RET', 'Gene', (106, 109)) ('VHL', 'Gene', '7428', (119, 122)) ('pathogenic', 'Reg', (34, 44)) ('germline mutations', 'Var', (45, 63)) ('RET', 'Gene', '5979', (106, 109)) 70501 28162975 RET was significantly overexpressed in mutated tumors, both germline and somatic, relative to wild-type tumors (p < 0.003, Figure 2B). ('RET', 'Gene', '5979', (0, 3)) ('tumors', 'Disease', (47, 53)) ('tumors', 'Disease', 'MESH:D009369', (47, 53)) ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('tumors', 'Phenotype', 'HP:0002664', (104, 110)) ('RET', 'Gene', (0, 3)) ('mutated', 'Var', (39, 46)) ('tumors', 'Disease', (104, 110)) ('tumors', 'Disease', 'MESH:D009369', (104, 110)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('overexpressed', 'PosReg', (22, 35)) ('tumors', 'Phenotype', 'HP:0002664', (47, 53)) 70502 28162975 In contrast, NF1 and VHL mutations did not display positional tendencies based on somatic or germline origin. ('mutations', 'Var', (25, 34)) ('NF1', 'Gene', (13, 16)) ('NF1', 'Gene', '4763', (13, 16)) ('VHL', 'Gene', (21, 24)) ('VHL', 'Gene', '7428', (21, 24)) 70504 28162975 Only four tumors had both germline and somatic mutations in these genes: three tumors had both SDHB germline and ATRX somatic mutations, a previously reported association , and one tumor had both RET germline (p.V804M) and somatic (p.M918T) mutations. ('tumors', 'Disease', (10, 16)) ('SDHB', 'Gene', '6390', (95, 99)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('p.V804M', 'Var', (210, 217)) ('p.M918T', 'Mutation', 'rs74799832', (232, 239)) ('p.V804M', 'Mutation', 'rs79658334', (210, 217)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) ('tumor', 'Disease', (10, 15)) ('tumors', 'Disease', 'MESH:D009369', (10, 16)) ('tumors', 'Disease', (79, 85)) ('mutations', 'Var', (126, 135)) ('SDHB', 'Gene', (95, 99)) ('tumor', 'Disease', 'MESH:D009369', (10, 15)) ('RET', 'Gene', '5979', (196, 199)) ('ATRX', 'Gene', (113, 117)) ('ATRX', 'Gene', '546', (113, 117)) ('tumor', 'Disease', (79, 84)) ('tumors', 'Disease', 'MESH:D009369', (79, 85)) ('tumor', 'Disease', 'MESH:D009369', (79, 84)) ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('tumor', 'Disease', (181, 186)) ('RET', 'Gene', (196, 199)) ('tumors', 'Phenotype', 'HP:0002664', (10, 16)) ('p.M918T', 'Var', (232, 239)) ('tumor', 'Disease', 'MESH:D009369', (181, 186)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) 70505 28162975 Germline mutated PCC/PGLs also possessed somatic copy number events, indicating that these tumors are clonally derived (Figure 1). ('tumors', 'Disease', (91, 97)) ('tumors', 'Disease', 'MESH:D009369', (91, 97)) ('possessed', 'Reg', (31, 40)) ('tumors', 'Phenotype', 'HP:0002664', (91, 97)) ('Germline mutated', 'Var', (0, 16)) ('PGLs', 'Phenotype', 'HP:0002668', (21, 25)) ('PCC', 'Gene', (17, 20)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('PCC', 'Gene', '1421', (17, 20)) 70506 28162975 As expected, germline mutation in NF1, SDHB or VHL tended to co-occur with somatic copy number deletion of the respective locus. ('co-occur', 'Reg', (61, 69)) ('SDHB', 'Gene', '6390', (39, 43)) ('SDHB', 'Gene', (39, 43)) ('VHL', 'Gene', (47, 50)) ('germline mutation', 'Var', (13, 30)) ('NF1', 'Gene', (34, 37)) ('VHL', 'Gene', '7428', (47, 50)) ('NF1', 'Gene', '4763', (34, 37)) 70509 28162975 Four tumors contained CSDE1 mutations, two frameshift and two splice-site mutations, which clustered proximally within the gene. ('tumors', 'Disease', (5, 11)) ('tumors', 'Disease', 'MESH:D009369', (5, 11)) ('frameshift', 'Var', (43, 53)) ('tumor', 'Phenotype', 'HP:0002664', (5, 10)) ('CSDE1', 'Gene', (22, 27)) ('tumors', 'Phenotype', 'HP:0002664', (5, 11)) ('mutations', 'Var', (28, 37)) ('contained', 'Reg', (12, 21)) 70511 28162975 One tumor had an acceptor site mutation that resulted in intron retention and a truncated protein sequence (593 vs 844 amino acids) (right purple triangle in Figure 2C, Figure S1A). ('tumor', 'Disease', (4, 9)) ('protein', 'Protein', (90, 97)) ('intron retention', 'MPA', (57, 73)) ('mutation', 'Var', (31, 39)) ('tumor', 'Disease', 'MESH:D009369', (4, 9)) ('resulted in', 'Reg', (45, 56)) ('truncated', 'MPA', (80, 89)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) 70512 28162975 An additional tumor had a mutation in an intron donor site, resulting in upstream exon skipping (left purple triangle in Figure 2C, Figure S1A) and a transcript with a small, in-frame protein sequence truncation (789 vs 844 amino acids). ('tumor', 'Disease', (14, 19)) ('mutation', 'Var', (26, 34)) ('upstream exon skipping', 'MPA', (73, 95)) ('tumor', 'Disease', 'MESH:D009369', (14, 19)) ('donor', 'Species', '9606', (48, 53)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) 70513 28162975 Multi-platform integration revealed that CSDE1 mutated tumors had marked genomic deletion and underexpression of the gene, supporting a loss-of-function role (Figure 2D). ('loss-of-function', 'NegReg', (136, 152)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('CSDE1', 'Gene', (41, 46)) ('tumors', 'Phenotype', 'HP:0002664', (55, 61)) ('tumors', 'Disease', 'MESH:D009369', (55, 61)) ('tumors', 'Disease', (55, 61)) ('mutated', 'Var', (47, 54)) 70515 28162975 Finally, comparing the expression profiles of CSDE1 mutant PCC/PGLs to published microarrays of Csde1 knockout in mouse embryonic stem cells revealed significant correlation, supporting the functional role of CSDE1 mutations in PCC/PGL (Figure S1B). ('Csde1', 'Gene', (96, 101)) ('PCC', 'Gene', (228, 231)) ('PCC', 'Gene', '1421', (59, 62)) ('mutant', 'Var', (52, 58)) ('PCC', 'Gene', '1421', (228, 231)) ('PCC', 'Gene', (59, 62)) ('mutations', 'Var', (215, 224)) ('mouse', 'Species', '10090', (114, 119)) ('PGLs', 'Phenotype', 'HP:0002668', (63, 67)) ('Csde1', 'Gene', '229663', (96, 101)) ('CSDE1', 'Gene', (209, 214)) 70517 28162975 Many focal deletion peaks (n = 27) were detected, including NF1 (Figure 3A), as previously reported. ('deletion', 'Var', (11, 19)) ('NF1', 'Gene', '4763', (60, 63)) ('NF1', 'Gene', (60, 63)) 70518 28162975 Ten of 16 primary tumors with focal 4q31.1 amplification also had 17q21.31 focally amplified (p < 3e-8; Figure 3B and S2A). ('amplification', 'Var', (43, 56)) ('tumors', 'Disease', 'MESH:D009369', (18, 24)) ('tumors', 'Disease', (18, 24)) ('tumors', 'Phenotype', 'HP:0002664', (18, 24)) ('4q31.1', 'Gene', (36, 42)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) ('17q21.31', 'Gene', (66, 74)) 70533 28162975 Searching for correlated molecular alterations that might point to MAML3 fusion gene functional consequences in PCC/PGL, we found fusion-positive tumors to have a unique and expansive methylation profile relative to MAML3 fusion-negative tumors (4,229 significant probes) (Figure 4A). ('tumors', 'Phenotype', 'HP:0002664', (146, 152)) ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('MAML3', 'Gene', '55534', (216, 221)) ('PCC', 'Gene', (112, 115)) ('MAML3', 'Gene', (216, 221)) ('fusion-positive', 'Var', (130, 145)) ('tumors', 'Disease', (238, 244)) ('tumor', 'Phenotype', 'HP:0002664', (238, 243)) ('tumors', 'Disease', 'MESH:D009369', (146, 152)) ('methylation', 'MPA', (184, 195)) ('tumors', 'Phenotype', 'HP:0002664', (238, 244)) ('tumors', 'Disease', 'MESH:D009369', (238, 244)) ('tumors', 'Disease', (146, 152)) ('PCC', 'Gene', '1421', (112, 115)) ('MAML3', 'Gene', '55534', (67, 72)) ('MAML3', 'Gene', (67, 72)) 70534 28162975 The predominant effect was hypomethylation of fusion-positive compared to fusion-negative tumors. ('hypomethylation', 'Var', (27, 42)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('tumors', 'Disease', (90, 96)) ('tumors', 'Disease', 'MESH:D009369', (90, 96)) ('tumors', 'Phenotype', 'HP:0002664', (90, 96)) 70535 28162975 Analyzing MAML3 fusion-positive tumors by pathway analysis, we found that genes in developmental pathways, Wnt receptor signaling and Hedgehog signaling, were significantly overexpressed (Figure S3D and Figure 4B), several of which were also hypomethylated (Figure S3C). ('Wnt receptor signaling', 'Pathway', (107, 129)) ('developmental pathways', 'Pathway', (83, 105)) ('hypomethylated', 'Var', (242, 256)) ('MAML3', 'Gene', '55534', (10, 15)) ('MAML3', 'Gene', (10, 15)) ('tumors', 'Phenotype', 'HP:0002664', (32, 38)) ('overexpressed', 'PosReg', (173, 186)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('tumors', 'Disease', (32, 38)) ('Hedgehog signaling', 'Pathway', (134, 152)) ('tumors', 'Disease', 'MESH:D009369', (32, 38)) 70537 28162975 Finally, RPPA analysis showed Wnt pathway members beta-catenin, DVL3, and GSK3 were overexpressed in MAML3 fusion-positive tumors (Figure 4B). ('fusion-positive', 'Var', (107, 122)) ('DVL3', 'Gene', (64, 68)) ('tumors', 'Disease', (123, 129)) ('tumors', 'Disease', 'MESH:D009369', (123, 129)) ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('beta-catenin', 'Gene', '1499', (50, 62)) ('beta-catenin', 'Gene', (50, 62)) ('GSK3', 'Gene', (74, 78)) ('overexpressed', 'PosReg', (84, 97)) ('DVL3', 'Gene', '1857', (64, 68)) ('MAML3', 'Gene', '55534', (101, 106)) ('MAML3', 'Gene', (101, 106)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) 70545 28162975 demonstrated that the overexpressed MAML3 caused greater proliferation rates in the cell line model, suggesting that the MAML3 fusion gene may be associated with an increased growth rate in PCC/PGLs. ('PGLs', 'Phenotype', 'HP:0002668', (194, 198)) ('PCC', 'Gene', (190, 193)) ('MAML3', 'Gene', '55534', (36, 41)) ('MAML3', 'Gene', (36, 41)) ('growth', 'MPA', (175, 181)) ('PCC', 'Gene', '1421', (190, 193)) ('fusion gene', 'Var', (127, 138)) ('MAML3', 'Gene', '55534', (121, 126)) ('MAML3', 'Gene', (121, 126)) ('proliferation', 'CPA', (57, 70)) ('increased', 'PosReg', (165, 174)) 70553 28162975 The strong associations of these alterations with an unsupervised expression subtype are consistent with MAML3 fusion genes and CSDE1 somatic mutations being important driver events. ('MAML3', 'Gene', '55534', (105, 110)) ('MAML3', 'Gene', (105, 110)) ('associations', 'Interaction', (11, 23)) ('CSDE1', 'Gene', (128, 133)) ('alterations', 'Var', (33, 44)) 70554 28162975 Alterations in both genes appear to be two independent routes to activate Wnt and Hedgehog signaling in PCC/PGL. ('PCC', 'Gene', '1421', (104, 107)) ('Alterations', 'Var', (0, 11)) ('activate', 'PosReg', (65, 73)) ('PCC', 'Gene', (104, 107)) ('Hedgehog signaling', 'Pathway', (82, 100)) 70558 28162975 This subtype had somatic and germline mutations in NF1, RET, TMEM127 and HRAS, as previously reported, and rarer events affecting kinase signaling, including fusion genes involving NF1, BRAF and NGFR. ('fusion', 'Var', (158, 164)) ('BRAF', 'Gene', (186, 190)) ('NGFR', 'Gene', (195, 199)) ('affecting', 'Reg', (120, 129)) ('HRAS', 'Gene', '3265', (73, 77)) ('NF1', 'Gene', '4763', (51, 54)) ('RET', 'Gene', '5979', (56, 59)) ('HRAS', 'Gene', (73, 77)) ('NGFR', 'Gene', '4804', (195, 199)) ('TMEM127', 'Gene', (61, 68)) ('NF1', 'Gene', (181, 184)) ('NF1', 'Gene', (51, 54)) ('mutations', 'Var', (38, 47)) ('TMEM127', 'Gene', '55654', (61, 68)) ('NF1', 'Gene', '4763', (181, 184)) ('BRAF', 'Gene', '673', (186, 190)) ('RET', 'Gene', (56, 59)) ('kinase signaling', 'MPA', (130, 146)) 70559 28162975 This subtype, particularly the HRAS mutated subset, was enriched within protein expression (RPPA) cluster 3, which had increased expression of components of the RAS-MAPK signaling pathway and reduced expression of the DNA damage pathway (Figure S5A). ('HRAS', 'Gene', '3265', (31, 35)) ('expression', 'MPA', (129, 139)) ('DNA damage pathway', 'Pathway', (218, 236)) ('RAS-MAPK', 'Pathway', (161, 169)) ('HRAS', 'Gene', (31, 35)) ('mutated', 'Var', (36, 43)) ('expression', 'MPA', (200, 210)) ('reduced', 'NegReg', (192, 199)) ('increased', 'PosReg', (119, 128)) 70563 28162975 Germline mutations in SDHB, SDHD and VHL, and somatic mutations in VHL and EPAS1 were completely specific to this subtype (Figure 5A), consistent with earlier studies . ('SDHD', 'Gene', (28, 32)) ('EPAS1', 'Gene', (75, 80)) ('VHL', 'Gene', '7428', (67, 70)) ('VHL', 'Gene', (37, 40)) ('mutations', 'Var', (54, 63)) ('SDHB', 'Gene', '6390', (22, 26)) ('VHL', 'Gene', '7428', (37, 40)) ('SDHB', 'Gene', (22, 26)) ('SDHD', 'Gene', '6392', (28, 32)) ('EPAS1', 'Gene', '2034', (75, 80)) ('VHL', 'Gene', (67, 70)) 70565 28162975 Most genome-doubled tumors (74%), in which nearly all chromosomes are amplified, occurred in the pseudohypoxia subtype, mostly in conjunction with EPAS1 or VHL mutations (Figure 5A and 5B; Figure S5B). ('tumors', 'Disease', (20, 26)) ('tumors', 'Disease', 'MESH:D009369', (20, 26)) ('mutations', 'Var', (160, 169)) ('S5B', 'Gene', '5711', (196, 199)) ('EPAS1', 'Gene', '2034', (147, 152)) ('tumors', 'Phenotype', 'HP:0002664', (20, 26)) ('VHL', 'Gene', '7428', (156, 159)) ('pseudohypoxia subtype', 'Disease', 'MESH:C535673', (97, 118)) ('EPAS1', 'Gene', (147, 152)) ('S5B', 'Gene', (196, 199)) ('occurred', 'Reg', (81, 89)) ('tumor', 'Phenotype', 'HP:0002664', (20, 25)) ('pseudohypoxia subtype', 'Disease', (97, 118)) ('VHL', 'Gene', (156, 159)) 70566 28162975 The pseudohypoxia subtype also contained two of the three unsupervised clusters of DNA methylation (hypermethylated and intermediate) confirming earlier reports , with most SDHB and SDHD germline mutations occurring in the hypermethylated subtype and nearly all VHL and EPAS1 mutations in the intermediate subtype. ('SDHD', 'Gene', '6392', (182, 186)) ('EPAS1', 'Gene', '2034', (270, 275)) ('pseudohypoxia subtype', 'Disease', 'MESH:C535673', (4, 25)) ('SDHB', 'Gene', '6390', (173, 177)) ('EPAS1', 'Gene', (270, 275)) ('mutations', 'Var', (276, 285)) ('SDHB', 'Gene', (173, 177)) ('pseudohypoxia subtype', 'Disease', (4, 25)) ('VHL', 'Gene', (262, 265)) ('SDHD', 'Gene', (182, 186)) ('mutations', 'Var', (196, 205)) ('VHL', 'Gene', '7428', (262, 265)) 70576 28162975 MAX mutation associated PCCs have been reported to contain multiple tumor foci within one adrenal gland. ('MAX', 'Gene', (0, 3)) ('PCC', 'Gene', '1421', (24, 27)) ('associated', 'Reg', (13, 23)) ('tumor foci', 'Disease', (68, 78)) ('mutation', 'Var', (4, 12)) ('PCCs', 'Phenotype', 'HP:0002666', (24, 28)) ('PCC', 'Gene', (24, 27)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('tumor foci', 'Disease', 'MESH:C565785', (68, 78)) 70578 28162975 The kinase signaling pathway contained alterations in NF1, HRAS and RET, as previously reported, and we now expand this set with alterations in BRAF, FGFR, NGFR and subunits of cAMP-dependent protein kinase A (PKA). ('kinase signaling pathway', 'Pathway', (4, 28)) ('NGFR', 'Gene', '4804', (156, 160)) ('HRAS', 'Gene', (59, 63)) ('FGFR', 'Gene', (150, 154)) ('NF1', 'Gene', '4763', (54, 57)) ('NF1', 'Gene', (54, 57)) ('RET', 'Gene', (68, 71)) ('BRAF', 'Gene', '673', (144, 148)) ('alterations', 'Var', (129, 140)) ('BRAF', 'Gene', (144, 148)) ('RET', 'Gene', '5979', (68, 71)) ('NGFR', 'Gene', (156, 160)) ('HRAS', 'Gene', '3265', (59, 63)) 70579 28162975 Mutations in the subunits of PKA have been implicated in other adrenal pathologies; notable examples are PRKAR1A in Carney complex and PRKACA in adrenocortical carcinoma. ('PKA', 'Gene', (29, 32)) ('PRKAR1A', 'Gene', (105, 112)) ('carcinoma', 'Phenotype', 'HP:0030731', (160, 169)) ('implicated', 'Reg', (43, 53)) ('adrenocortical carcinoma', 'Disease', 'MESH:D018268', (145, 169)) ('adrenocortical carcinoma', 'Phenotype', 'HP:0006744', (145, 169)) ('PRKAR1A', 'Gene', '5573', (105, 112)) ('Mutations', 'Var', (0, 9)) ('PRKACA', 'Gene', (135, 141)) ('Carney complex', 'Disease', (116, 130)) ('PRKACA', 'Gene', '5566', (135, 141)) ('adrenocortical carcinoma', 'Disease', (145, 169)) 70580 28162975 Within the hypoxia signaling pathway, we found mutually exclusive mutations in interacting proteins, including VHL, ANRT (HIF1beta), EPAS1 (HIF2alpha) and EGLN1 (PHD2). ('mutations', 'Var', (66, 75)) ('EPAS1', 'Gene', (133, 138)) ('PHD2', 'Gene', '54583', (162, 166)) ('EPAS1', 'Gene', '2034', (133, 138)) ('VHL', 'Gene', (111, 114)) ('HIF2alpha', 'Gene', '2034', (140, 149)) ('EGLN1', 'Gene', '54583', (155, 160)) ('VHL', 'Gene', '7428', (111, 114)) ('HIF1beta', 'Gene', '405', (122, 130)) ('hypoxia', 'Disease', (11, 18)) ('HIF2alpha', 'Gene', (140, 149)) ('hypoxia', 'Disease', 'MESH:D000860', (11, 18)) ('HIF1beta', 'Gene', (122, 130)) ('EGLN1', 'Gene', (155, 160)) ('ANRT', 'Gene', (116, 120)) ('PHD2', 'Gene', (162, 166)) 70581 28162975 Disruption of the hypoxia signaling pathway leads to a state of pseudohypoxia that drives cell proliferation. ('pseudohypoxia', 'Disease', (64, 77)) ('cell proliferation', 'CPA', (90, 108)) ('hypoxia', 'Disease', 'MESH:D000860', (70, 77)) ('pseudohypoxia', 'Disease', 'None', (64, 77)) ('drives', 'PosReg', (83, 89)) ('hypoxia', 'Disease', (70, 77)) ('hypoxia', 'Disease', 'MESH:D000860', (18, 25)) ('leads to', 'Reg', (44, 52)) ('hypoxia', 'Disease', (18, 25)) ('Disruption', 'Var', (0, 10)) 70582 28162975 Many tumors had mutations in the Krebs cycle genes SDHB and SDHD, as expected, and one had an IDH1 mutation. ('tumors', 'Disease', (5, 11)) ('tumors', 'Disease', 'MESH:D009369', (5, 11)) ('IDH1', 'Gene', (94, 98)) ('SDHD', 'Gene', (60, 64)) ('SDHD', 'Gene', '6392', (60, 64)) ('IDH1', 'Gene', '3417', (94, 98)) ('mutations', 'Var', (16, 25)) ('tumor', 'Phenotype', 'HP:0002664', (5, 10)) ('SDHB', 'Gene', '6390', (51, 55)) ('SDHB', 'Gene', (51, 55)) ('tumors', 'Phenotype', 'HP:0002664', (5, 11)) ('Krebs', 'Chemical', '-', (33, 38)) 70583 28162975 The SDHx and IDH mutations are predicted to impair glucose consumption and metabolism leading to inhibition of 2-oxoglutarate-dependent histone and DNA demethylase enzymes, resulting in epigenetic silencing. ('IDH', 'Gene', '3417', (13, 16)) ('epigenetic silencing', 'MPA', (186, 206)) ('inhibition', 'NegReg', (97, 107)) ('2-oxoglutarate-dependent histone', 'Enzyme', (111, 143)) ('2-oxoglutarate', 'Chemical', 'MESH:D007656', (111, 125)) ('impair glucose consumption', 'Disease', 'MESH:D044882', (44, 70)) ('SDHx', 'Gene', (4, 8)) ('DNA demethylase enzymes', 'Enzyme', (148, 171)) ('metabolism', 'MPA', (75, 85)) ('impair glucose consumption', 'Disease', (44, 70)) ('SDHx', 'Chemical', '-', (4, 8)) ('IDH', 'Gene', (13, 16)) ('mutations', 'Var', (17, 26)) 70585 28162975 We also found mutations in ATRX, often with concurrent SDHB mutations. ('SDHB', 'Gene', (55, 59)) ('ATRX', 'Gene', (27, 31)) ('ATRX', 'Gene', '546', (27, 31)) ('SDHB', 'Gene', '6390', (55, 59)) ('mutations', 'Var', (60, 69)) ('mutations', 'Var', (14, 23)) 70586 28162975 ATRX mutations have been previously reported in conjunction with mutations in IDH1 and SDHB, suggesting that they are synergistic in tumor development. ('ATRX', 'Gene', (0, 4)) ('SDHB', 'Gene', '6390', (88, 92)) ('IDH1', 'Gene', (78, 82)) ('SDHB', 'Gene', (88, 92)) ('mutations', 'Var', (5, 14)) ('tumor', 'Disease', 'MESH:D009369', (134, 139)) ('IDH1', 'Gene', '3417', (78, 82)) ('ATRX', 'Gene', '546', (0, 4)) ('tumor', 'Phenotype', 'HP:0002664', (134, 139)) ('tumor', 'Disease', (134, 139)) 70590 28162975 In contrast, plasma and/or urine metanephrine and epinephrine positivity, the kinase signaling expression subtype and the low-methylated subtype were associated with longer ADFS. ('plasma', 'MPA', (13, 19)) ('low-methylated', 'Var', (122, 136)) ('metanephrine', 'Chemical', 'MESH:D008676', (33, 45)) ('epinephrine', 'Chemical', 'MESH:D004837', (50, 61)) ('kinase signaling expression', 'MPA', (78, 105)) 70596 28162975 We identified a driver mutation, fusion gene, or copy number alteration in a majority of PCC/PGLs (95%), thus explaining the molecular etiology of most of the cohort. ('copy number alteration', 'Var', (49, 71)) ('PCC', 'Gene', (89, 92)) ('mutation', 'Var', (23, 31)) ('fusion gene', 'Var', (33, 44)) ('PGLs', 'Phenotype', 'HP:0002668', (93, 97)) ('PCC', 'Gene', '1421', (89, 92)) 70597 28162975 We report several additional driver alterations in PCC/PGL including CSDE1 mutations and MAML3 fusion genes. ('PCC', 'Gene', '1421', (51, 54)) ('CSDE1', 'Gene', (69, 74)) ('MAML3', 'Gene', '55534', (89, 94)) ('MAML3', 'Gene', (89, 94)) ('alterations', 'Reg', (36, 47)) ('mutations', 'Var', (75, 84)) ('PCC', 'Gene', (51, 54)) 70598 28162975 In particular, this study identified recurrent DNA translocation and fusion genes as a component of PCC/PGL tumorigenesis. ('DNA', 'Gene', (47, 50)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('fusion genes', 'Var', (69, 81)) ('PGL tumor', 'Disease', (104, 113)) ('PCC', 'Gene', (100, 103)) ('PGL tumor', 'Disease', 'MESH:D010235', (104, 113)) ('PCC', 'Gene', '1421', (100, 103)) 70601 28162975 Based on our results, MAML3 fusion genes are an important molecular alteration in PCC/PGL tumorigenesis. ('PCC', 'Gene', (82, 85)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('fusion genes', 'Var', (28, 40)) ('PGL tumor', 'Disease', (86, 95)) ('PGL tumor', 'Disease', 'MESH:D010235', (86, 95)) ('PCC', 'Gene', '1421', (82, 85)) ('MAML3', 'Gene', '55534', (22, 27)) ('MAML3', 'Gene', (22, 27)) 70602 28162975 The tumors with MAML3 fusions lacked other driving alterations and were associated with a specific expression subtype, Wnt pathway activation, DNA hypomethylation and poor clinical outcome. ('expression', 'MPA', (99, 109)) ('activation', 'PosReg', (131, 141)) ('Wnt pathway', 'Pathway', (119, 130)) ('tumors', 'Disease', (4, 10)) ('tumors', 'Disease', 'MESH:D009369', (4, 10)) ('associated', 'Reg', (72, 82)) ('fusions', 'Var', (22, 29)) ('tumors', 'Phenotype', 'HP:0002664', (4, 10)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) ('MAML3', 'Gene', '55534', (16, 21)) ('MAML3', 'Gene', (16, 21)) 70603 28162975 The DNA hypomethylation profile may be a consequence of widespread, aberrant MAML3 binding to the genome and promoting gene expression. ('MAML3', 'Gene', '55534', (77, 82)) ('MAML3', 'Gene', (77, 82)) ('gene expression', 'MPA', (119, 134)) ('binding', 'Interaction', (83, 90)) ('promoting', 'PosReg', (109, 118)) ('aberrant', 'Var', (68, 76)) 70606 28162975 Fusion genes involving mastermind family members have been reported in other tumor types. ('Fusion genes', 'Var', (0, 12)) ('reported', 'Reg', (59, 67)) ('tumor', 'Disease', 'MESH:D009369', (77, 82)) ('tumor', 'Phenotype', 'HP:0002664', (77, 82)) ('tumor', 'Disease', (77, 82)) 70608 28162975 On the other hand, the CRTC1-MAML2 fusion gene in mucoepidermoid carcinomas did affect NOTCH signaling and also had a gain-of-function interaction with Myc, consistent with MYC overexpression in MAML3 fusion-positive PCC/PGLs. ('carcinoma', 'Phenotype', 'HP:0030731', (65, 74)) ('MAML2', 'Gene', (29, 34)) ('interaction', 'Interaction', (135, 146)) ('PGLs', 'Phenotype', 'HP:0002668', (221, 225)) ('CRTC1', 'Gene', (23, 28)) ('carcinomas', 'Phenotype', 'HP:0030731', (65, 75)) ('MAML3', 'Gene', (195, 200)) ('gain-of-function', 'PosReg', (118, 134)) ('Myc', 'Gene', '4609', (152, 155)) ('PCC', 'Gene', (217, 220)) ('fusion', 'Var', (35, 41)) ('MAML2', 'Gene', '84441', (29, 34)) ('mucoepidermoid carcinomas', 'Disease', (50, 75)) ('mucoepidermoid carcinomas', 'Disease', 'MESH:D018277', (50, 75)) ('PCC', 'Gene', '1421', (217, 220)) ('MAML3', 'Gene', '55534', (195, 200)) ('MYC', 'Gene', (173, 176)) ('NOTCH signaling', 'MPA', (87, 102)) ('CRTC1', 'Gene', '23373', (23, 28)) ('affect', 'Reg', (80, 86)) ('Myc', 'Gene', (152, 155)) ('MYC', 'Gene', '4609', (173, 176)) 70609 28162975 Future work may illuminate whether mastermind fusions in other tumor types lead to Wnt signaling pathway upregulation. ('tumor', 'Disease', (63, 68)) ('upregulation', 'PosReg', (105, 117)) ('fusions', 'Var', (46, 53)) ('Wnt signaling pathway', 'Pathway', (83, 104)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) 70610 28162975 Truncating mutations in CSDE1 emerged as a driver of PCC/PGL tumorigenesis, with integrated analysis indicating a tumor suppressor role. ('CSDE1', 'Gene', (24, 29)) ('Truncating mutations', 'Var', (0, 20)) ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('PGL tumor', 'Disease', 'MESH:D010235', (57, 66)) ('PCC', 'Gene', (53, 56)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('driver', 'Reg', (43, 49)) ('tumor', 'Disease', 'MESH:D009369', (61, 66)) ('tumor', 'Disease', (114, 119)) ('PCC', 'Gene', '1421', (53, 56)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('PGL tumor', 'Disease', (57, 66)) ('tumor', 'Disease', (61, 66)) 70612 28162975 Querying a cancer mutation a database for CSDE1 returned rare truncating mutations in other tumor types, suggesting that CSDE1 may have a driver role in other cancers. ('cancer', 'Disease', (159, 165)) ('cancers', 'Disease', (159, 166)) ('cancer', 'Phenotype', 'HP:0002664', (11, 17)) ('tumor', 'Disease', 'MESH:D009369', (92, 97)) ('truncating mutations', 'MPA', (62, 82)) ('cancer', 'Phenotype', 'HP:0002664', (159, 165)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('cancer', 'Disease', 'MESH:D009369', (11, 17)) ('cancers', 'Phenotype', 'HP:0002664', (159, 166)) ('mutation', 'Var', (18, 26)) ('tumor', 'Disease', (92, 97)) ('cancer', 'Disease', (11, 17)) ('cancer', 'Disease', 'MESH:D009369', (159, 165)) ('cancers', 'Disease', 'MESH:D009369', (159, 166)) 70613 28162975 Our results provide significant, clinically-relevant information by confirming and identifying several molecular markers : including germline mutations in SDHB, somatic mutations in ATRX and fusions involving MAML3 : that were associated with an increased risk of aggressive and metastatic disease. ('mutations', 'Var', (142, 151)) ('fusions', 'Var', (191, 198)) ('mutations', 'Var', (169, 178)) ('SDHB', 'Gene', (155, 159)) ('MAML3', 'Gene', '55534', (209, 214)) ('associated with', 'Reg', (227, 242)) ('MAML3', 'Gene', (209, 214)) ('ATRX', 'Gene', (182, 186)) ('ATRX', 'Gene', '546', (182, 186)) ('SDHB', 'Gene', '6390', (155, 159)) 70617 28162975 Finally, FDA-approved targeted therapies are available for patients whose tumors carry VHL, RET, BRAF, EPAS1 and FGFR1 mutations. ('VHL', 'Gene', '7428', (87, 90)) ('RET', 'Gene', (92, 95)) ('FGFR1', 'Gene', (113, 118)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('EPAS1', 'Gene', '2034', (103, 108)) ('FGFR1', 'Gene', '2260', (113, 118)) ('tumors', 'Phenotype', 'HP:0002664', (74, 80)) ('patients', 'Species', '9606', (59, 67)) ('EPAS1', 'Gene', (103, 108)) ('mutations', 'Var', (119, 128)) ('BRAF', 'Gene', '673', (97, 101)) ('VHL', 'Gene', (87, 90)) ('RET', 'Gene', '5979', (92, 95)) ('tumors', 'Disease', 'MESH:D009369', (74, 80)) ('BRAF', 'Gene', (97, 101)) ('tumors', 'Disease', (74, 80)) 70637 28162975 Single drivers in tumors by germline mutation, somatic mutation, or fusion gene. ('fusion gene', 'Var', (68, 79)) ('tumors', 'Disease', (18, 24)) ('tumors', 'Disease', 'MESH:D009369', (18, 24)) ('tumors', 'Phenotype', 'HP:0002664', (18, 24)) ('germline mutation', 'Var', (28, 45)) ('somatic mutation', 'Var', (47, 63)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 70680 29057184 Study shows that patients with pheo diagnosed at an early age (age 30 years) without a family history of or other clinical signs of pheo are more likely to have mutations in VHL or in the succinate dehydrogenase (SDH) subunit genes, specifically SDH B and SDH D mutations compared with tumors in patients with NF1 and MEN2. ('VHL', 'Disease', 'MESH:D006623', (174, 177)) ('tumor', 'Phenotype', 'HP:0002664', (286, 291)) ('NF1', 'Gene', '4763', (310, 313)) ('tumors', 'Disease', (286, 292)) ('SDH', 'Gene', '6390', (246, 249)) ('pheo', 'Disease', (31, 35)) ('mutations', 'Var', (262, 271)) ('SDH', 'Gene', '6390', (213, 216)) ('succinate dehydrogenase', 'Gene', '6390', (188, 211)) ('SDH', 'Gene', (256, 259)) ('NF1', 'Gene', (310, 313)) ('SDH B', 'Gene', '6390', (246, 251)) ('tumors', 'Disease', 'MESH:D009369', (286, 292)) ('SDH', 'Gene', (246, 249)) ('SDH B', 'Gene', (246, 251)) ('VHL', 'Disease', (174, 177)) ('SDH', 'Gene', (213, 216)) ('SDH D', 'Gene', '6392', (256, 261)) ('patients', 'Species', '9606', (17, 25)) ('patients', 'Species', '9606', (296, 304)) ('SDH D', 'Gene', (256, 261)) ('pheo', 'Chemical', '-', (31, 35)) ('succinate dehydrogenase', 'Gene', (188, 211)) ('pheo', 'Chemical', '-', (132, 136)) ('tumors', 'Phenotype', 'HP:0002664', (286, 292)) ('SDH', 'Gene', '6390', (256, 259)) ('mutations', 'Var', (161, 170)) 70681 29057184 In addition, the presence of bilateral adrenal tumors or multifocal extra-adrenal tumors is more likely associated with germline mutations. ('tumors', 'Phenotype', 'HP:0002664', (82, 88)) ('multifocal extra-adrenal tumors', 'Disease', (57, 88)) ('associated', 'Reg', (104, 114)) ('germline mutations', 'Var', (120, 138)) ('bilateral adrenal tumors', 'Disease', (29, 53)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('multifocal extra-adrenal tumors', 'Disease', 'None', (57, 88)) ('bilateral adrenal tumors', 'Disease', 'MESH:D000310', (29, 53)) ('tumors', 'Phenotype', 'HP:0002664', (47, 53)) 70682 29057184 Mutations in the SDH B and SDH D have been linked to extra-adrenal tumors. ('SDH D', 'Gene', (27, 32)) ('tumor', 'Phenotype', 'HP:0002664', (67, 72)) ('SDH B', 'Gene', (17, 22)) ('SDH B', 'Gene', '6390', (17, 22)) ('Mutations', 'Var', (0, 9)) ('linked', 'Reg', (43, 49)) ('extra-adrenal tumors', 'Disease', 'MESH:D010236', (53, 73)) ('SDH D', 'Gene', '6392', (27, 32)) ('extra-adrenal tumors', 'Disease', (53, 73)) ('tumors', 'Phenotype', 'HP:0002664', (67, 73)) 70683 29057184 In the past 10 years, two additional new pheo associated syndromes have been described: those associated with hypoxia inducible factor two alpha (HIF 2A) and prolyl hydroxylase one or two mutations (PHD 1/2). ('pheo', 'Chemical', '-', (41, 45)) ('HIF 2A', 'Gene', (146, 152)) ('associated', 'Reg', (94, 104)) ('PHD 1', 'Gene', (199, 204)) ('HIF 2A', 'Gene', '2034', (146, 152)) ('hypoxia', 'Disease', (110, 117)) ('mutations', 'Var', (188, 197)) ('hypoxia', 'Disease', 'MESH:D000860', (110, 117)) ('PHD 1', 'Gene', '112398', (199, 204)) 70686 29057184 Tumor manipulation during surgery can cause serum catecholamine surge resulting in hypertensive crisis and cardiac arrhythmia. ('cardiac arrhythmia', 'Disease', (107, 125)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('serum catecholamine surge', 'MPA', (44, 69)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (83, 102)) ('hypertensive', 'Disease', 'MESH:D006973', (83, 95)) ('cause', 'Reg', (38, 43)) ('serum catecholamine surge', 'Phenotype', 'HP:0003334', (44, 69)) ('hypertensive', 'Disease', (83, 95)) ('cardiac arrhythmia', 'Disease', 'MESH:D001145', (107, 125)) ('cardiac arrhythmia', 'Phenotype', 'HP:0011675', (107, 125)) ('catecholamine', 'Chemical', 'MESH:D002395', (50, 63)) ('Tumor manipulation', 'Var', (0, 18)) 70687 29057184 Therefore, patients are started preoperatively on phenoxybenzamine, a non-competitive Alpha 1 and Alpha 2 (alpha1 and alpha2, respectively) blocker. ('phenoxybenzamine', 'Var', (50, 66)) ('Alpha 2 (alpha1 and alpha2', 'Gene', '146', (98, 124)) ('Alpha 1', 'Gene', '146', (86, 93)) ('Alpha 1', 'Gene', (86, 93)) ('patients', 'Species', '9606', (11, 19)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (50, 66)) 70688 29057184 However, some studies questioned the efficacy of phenoxybenzamine, as some patients pretreated with phenoxybenzamine still had hypertensive crisis during surgery. ('hypertensive', 'Disease', (127, 139)) ('had', 'Reg', (123, 126)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (49, 65)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (100, 116)) ('patients', 'Species', '9606', (75, 83)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (127, 146)) ('phenoxybenzamine', 'Var', (100, 116)) ('hypertensive', 'Disease', 'MESH:D006973', (127, 139)) 70695 29057184 Metyrosine, an inhibitor of the enzyme tyrosine hydroxylase, can be used as well to decrease the amount of synthesized catecholamines in the preoperative state and in patients with metastatic and inoperable disease. ('decrease', 'NegReg', (84, 92)) ('patients', 'Species', '9606', (167, 175)) ('catecholamines', 'Chemical', 'MESH:D002395', (119, 133)) ('amount of synthesized catecholamines', 'MPA', (97, 133)) ('Metyrosine', 'Chemical', 'MESH:D019805', (0, 10)) ('Metyrosine', 'Var', (0, 10)) 70841 28121933 Another case with a tumor at S1 underwent therapy with I131 metaiodobenzylguanidine continually after failure of radiotherapy, and showed no tumor growth after 5 years. ('tumor', 'Disease', 'MESH:D009369', (141, 146)) ('metaiodobenzylguanidine', 'Chemical', 'MESH:D019797', (60, 83)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('tumor', 'Disease', (141, 146)) ('tumor', 'Disease', 'MESH:D009369', (20, 25)) ('I131', 'Var', (55, 59)) ('tumor', 'Phenotype', 'HP:0002664', (20, 25)) ('tumor', 'Disease', (20, 25)) 70873 27896787 His electrocardiogram indicated sinus tachycardia and ST-segment elevation in leads V1-V3. ('tachycardia', 'Phenotype', 'HP:0001649', (38, 49)) ('sinus tachycardia', 'Disease', (32, 49)) ('indicated', 'Reg', (22, 31)) ('ST-segment elevation', 'Phenotype', 'HP:0012251', (54, 74)) ('sinus tachycardia', 'Disease', 'MESH:D013616', (32, 49)) ('sinus tachycardia', 'Phenotype', 'HP:0011703', (32, 49)) ('men', 'Species', '9606', (60, 63)) ('ST-segment', 'Var', (54, 64)) 70898 27896787 Her electrocardiogram indicated sinus tachycardia and ST-segment elevation in leads V2-V3. ('tachycardia', 'Phenotype', 'HP:0001649', (38, 49)) ('sinus tachycardia', 'Disease', (32, 49)) ('indicated', 'Reg', (22, 31)) ('ST-segment elevation', 'Phenotype', 'HP:0012251', (54, 74)) ('sinus tachycardia', 'Disease', 'MESH:D013616', (32, 49)) ('sinus tachycardia', 'Phenotype', 'HP:0011703', (32, 49)) ('men', 'Species', '9606', (60, 63)) ('ST-segment', 'Var', (54, 64)) 70937 27896787 Physical examination found temperature at 38.4 C, BP 129/99 mmHg, pulse 138/min, respiratory rate 24/min and initial oxygen saturation 97% breathing ambient air, but the rapid deterioration of her respiratory and hemodynamic status required oxygen therapy and mechanical ventilation. ('BP 129/99 mmHg', 'Var', (51, 65)) ('respiratory', 'MPA', (82, 93)) ('oxygen', 'Chemical', 'MESH:D010100', (118, 124)) ('oxygen', 'Chemical', 'MESH:D010100', (242, 248)) ('pulse', 'MPA', (67, 72)) 71058 24279337 In general, if we consider all non-functioning incidental lesions (group A + B) with suspicious imaging features (ACC vs. non-functioning benign adenomas) we observe that 1/89 (1.12%) lesion lesser than 4 cm, 2/34 (5.8%) lesions between 4 and 6 cm and 10/36 lesions larger than 6 cm (27.7%) were primary ACC. ('adenomas', 'Disease', 'MESH:D000236', (145, 153)) ('lesion lesser than', 'Var', (184, 202)) ('adenomas', 'Disease', (145, 153)) 71107 24711885 Succinate dehydrogenase (SDHB) gene mutation is currently the most important contributor to hereditary malignant pheochromocytomas. ('hereditary malignant pheochromocytomas', 'Disease', 'MESH:D010673', (92, 130)) ('hereditary malignant pheochromocytomas', 'Disease', (92, 130)) ('contributor', 'Reg', (77, 88)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (113, 130)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (113, 129)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDHB', 'Gene', (25, 29)) ('mutation', 'Var', (36, 44)) 71134 24711885 Urine metanephrines was 711 mcg/g creat (21-153 mcg/g creat), normetanephrine was 12782 mcg/g creat (108-524 mcg/g creat). ('Urine metanephrines', 'MPA', (0, 19)) ('metanephrines', 'Chemical', 'MESH:D008676', (6, 19)) ('12782', 'Var', (82, 87)) ('normetanephrine', 'MPA', (62, 77)) ('normetanephrine', 'Chemical', 'MESH:D009647', (62, 77)) 71136 24711885 Genetic analysis demonstrated a mutation of the succinate dehydrogenase (SDHB) gene. ('SDHB', 'Gene', '6390', (73, 77)) ('mutation', 'Var', (32, 40)) ('demonstrated', 'Reg', (17, 29)) ('SDHB', 'Gene', (73, 77)) 71146 24711885 MIBG scan with radio-labeled iodine (I), either 123I or 131I, can detect pheochromocytomas. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (73, 89)) ('MIBG', 'Chemical', 'MESH:D019797', (0, 4)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (73, 90)) ('pheochromocytomas', 'Disease', (73, 90)) ('131I', 'Chemical', 'MESH:C000614965', (56, 60)) ('iodine', 'Chemical', 'MESH:D007455', (29, 35)) ('123I', 'Chemical', 'MESH:C000614958', (48, 52)) ('131I', 'Var', (56, 60)) ('123I', 'Var', (48, 52)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (73, 90)) 71212 22006217 We found that none of the 4 patients with mutations on the SDHB gene (including 1 complete deletion) responded to chemotherapy. ('patients', 'Species', '9606', (28, 36)) ('mutations', 'Var', (42, 51)) ('SDHB', 'Gene', '6390', (59, 63)) ('SDHB', 'Gene', (59, 63)) 71213 22006217 One patient with an SDHC mutation was in the group of responders. ('SDHC', 'Gene', '6391', (20, 24)) ('SDHC', 'Gene', (20, 24)) ('mutation', 'Var', (25, 33)) ('patient', 'Species', '9606', (4, 11)) 71218 22006217 Two patients with unresectable disease were treated initially with 131I-MIBG, but chemotherapy was initiated 1 year later because of tumor progression. ('131I-MIBG', 'Var', (67, 76)) ('tumor', 'Disease', 'MESH:D009369', (133, 138)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('tumor', 'Disease', (133, 138)) ('patients', 'Species', '9606', (4, 12)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (67, 76)) 71266 22006217 Another reported clinical predictor of survival is the presence of germline mutations of the SDHB gene. ('germline mutations', 'Var', (67, 85)) ('SDHB', 'Gene', '6390', (93, 97)) ('SDHB', 'Gene', (93, 97)) 71268 22006217 Of note, none of the patients that tested positive for SDHB mutations were in the responders group. ('patients', 'Species', '9606', (21, 29)) ('mutations', 'Var', (60, 69)) ('SDHB', 'Gene', (55, 59)) ('SDHB', 'Gene', '6390', (55, 59)) 71277 22006217 Furthermore, there is evidence that some patients with metastases that are avid for I131-MIBG often harbor concurrent metastases that are not avid and may remain undetected even on post-therapy whole-body scanning after high-dose131I-MIBG therapy. ('metastases', 'Disease', (55, 65)) ('-MIBG', 'Chemical', 'MESH:D019797', (88, 93)) ('metastases', 'Disease', (118, 128)) ('metastases', 'Disease', 'MESH:D009362', (55, 65)) ('metastases', 'Disease', 'MESH:D009362', (118, 128)) ('dose131I-MIBG', 'Chemical', '-', (225, 238)) ('patients', 'Species', '9606', (41, 49)) ('-MIBG', 'Chemical', 'MESH:D019797', (233, 238)) ('I131-MIBG', 'Var', (84, 93)) 71286 22006217 We found that cyclophosphamide and dacarbazine with vincristine and/or doxorubicin was associated with blood pressure reduction, and longer OS in some patients. ('cyclophosphamide', 'Var', (14, 30)) ('reduction', 'NegReg', (118, 127)) ('blood pressure reduction', 'Phenotype', 'HP:0002615', (103, 127)) ('vincristine', 'Chemical', 'MESH:D014750', (52, 63)) ('patients', 'Species', '9606', (151, 159)) ('blood pressure', 'MPA', (103, 117)) ('dacarbazine', 'Chemical', 'MESH:D003606', (35, 46)) ('longer OS', 'CPA', (133, 142)) ('cyclophosphamide', 'Chemical', 'MESH:D003520', (14, 30)) ('doxorubicin', 'Chemical', 'MESH:D004317', (71, 82)) 71333 23776874 In animal studies, adrenaline injections caused medial necrosis, destruction of the elastic lamellae and atrophic scarring of the walls of large vessels. ('atrophic scarring', 'Phenotype', 'HP:0001075', (105, 122)) ('injections', 'Var', (30, 40)) ('adrenaline', 'Chemical', 'MESH:D004837', (19, 29)) ('necrosis', 'Disease', (55, 63)) ('atrophic', 'Disease', (105, 113)) ('necrosis', 'Disease', 'MESH:D009336', (55, 63)) ('scarring', 'Phenotype', 'HP:0100699', (114, 122)) ('destruction', 'CPA', (65, 76)) ('atrophic', 'Disease', 'MESH:D020966', (105, 113)) 71338 23776874 Norepinephrine being a more powerful vasoconstrictor than epinephrine, it may also lead to more vascular damage. ('epinephrine', 'Chemical', 'MESH:D004837', (3, 14)) ('Norepinephrine', 'Var', (0, 14)) ('epinephrine', 'Chemical', 'MESH:D004837', (58, 69)) ('vascular damage', 'Disease', 'MESH:D000783', (96, 111)) ('lead to', 'Reg', (83, 90)) ('vascular damage', 'Disease', (96, 111)) ('Norepinephrine', 'Chemical', 'MESH:D009638', (0, 14)) 71434 21565668 Activation of D1 receptors results in vasodilation of the renal arteries, while D2 activation will inhibit norepinephrine secretion from sympathetic nerve terminals and have a mild negative inotropic effect on the heart. ('D1 receptors', 'Protein', (14, 26)) ('negative', 'NegReg', (181, 189)) ('inhibit', 'NegReg', (99, 106)) ('vasodilation', 'MPA', (38, 50)) ('Activation', 'Var', (0, 10)) ('norepinephrine', 'Chemical', 'MESH:D009638', (107, 121)) ('renal arteries', 'MPA', (58, 72)) 71491 21565668 Around 10% of patients with mutations in the B subunit of succinate dehydrogenase complex (SDHB) may have biochemically silent pheochromocytomas due to a lack of TH. ('pheochromocytomas', 'Disease', 'MESH:D010673', (127, 144)) ('SDHB', 'Gene', '6390', (91, 95)) ('pheochromocytomas', 'Disease', (127, 144)) ('SDHB', 'Gene', (91, 95)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (127, 143)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (127, 144)) ('patients', 'Species', '9606', (14, 22)) ('mutations', 'Var', (28, 37)) 71492 21565668 This group is especially concerning because patients with SDHB mutation are prone to develop metastatic disease. ('SDHB', 'Gene', (58, 62)) ('patients', 'Species', '9606', (44, 52)) ('mutation', 'Var', (63, 71)) ('metastatic disease', 'CPA', (93, 111)) ('SDHB', 'Gene', '6390', (58, 62)) ('develop', 'PosReg', (85, 92)) 71556 21565668 It also important to remember that tumor manipulations during surgery may associate with the release of tremendous amounts of catecholamines into circulation, which might may be capable of overpowering the pharmacological blockade. ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('catecholamines', 'Chemical', 'MESH:D002395', (126, 140)) ('tumor', 'Disease', (35, 40)) ('manipulations', 'Var', (41, 54)) ('release of', 'MPA', (93, 103)) ('overpowering', 'PosReg', (189, 201)) 71561 21565668 This approach is based on several reports of the seeming inefficacy of phenoxybenzamine during surgery, as well as well-known postoperative hypotension and tachycardia, related to its use. ('postoperative hypotension', 'Disease', 'MESH:D007022', (126, 151)) ('phenoxybenzamine', 'Var', (71, 87)) ('postoperative hypotension', 'Disease', (126, 151)) ('tachycardia', 'Phenotype', 'HP:0001649', (156, 167)) ('hypotension', 'Phenotype', 'HP:0002615', (140, 151)) ('tachycardia', 'Disease', (156, 167)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (71, 87)) ('tachycardia', 'Disease', 'MESH:D013610', (156, 167)) 71576 19368708 The first Dutch SDHB founder deletion in paraganglioma - pheochromocytoma patients Germline mutations of the tumor suppressor genes SDHB, SDHC and SDHD play a major role in hereditary paraganglioma and pheochromocytoma. ('hereditary paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (173, 218)) ('SDHB', 'Gene', '6390', (16, 20)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('role', 'Reg', (165, 169)) ('SDHB', 'Gene', '6390', (132, 136)) ('paraganglioma - pheochromocytoma', 'Disease', 'MESH:D010673', (41, 73)) ('paraganglioma - pheochromocytoma', 'Disease', (41, 73)) ('SDHC', 'Gene', (138, 142)) ('SDHB', 'Gene', (16, 20)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (202, 218)) ('deletion', 'Var', (29, 37)) ('SDHB', 'Gene', (132, 136)) ('mutations', 'Var', (92, 101)) ('SDHD', 'Gene', '6392', (147, 151)) ('paraganglioma', 'Phenotype', 'HP:0002668', (41, 54)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (57, 73)) ('paraganglioma', 'Phenotype', 'HP:0002668', (184, 197)) ('SDHC', 'Gene', '6391', (138, 142)) ('SDHD', 'Gene', (147, 151)) ('tumor', 'Disease', (109, 114)) 71578 19368708 The majority of variants of the SDH genes are missense and nonsense mutations. ('SDH', 'Gene', '6390', (32, 35)) ('missense', 'Var', (46, 54)) ('SDH', 'Gene', (32, 35)) ('nonsense', 'Var', (59, 67)) ('variants', 'Var', (16, 24)) 71582 19368708 A novel deletion of exon 3 of the SDHB gene was identified in nine apparently unrelated Dutch patients. ('SDHB', 'Gene', '6390', (34, 38)) ('patients', 'Species', '9606', (94, 102)) ('deletion', 'Var', (8, 16)) ('SDHB', 'Gene', (34, 38)) 71583 19368708 An identical 7905 bp deletion, c.201-4429_287-933del, was found in all patients, resulting in a frameshift and a predicted truncated protein, p.Cys68HisfsX21. ('c.201-4429_287-933del', 'Var', (31, 52)) ('c.201-4429_287-933del', 'Mutation', 'c.201-4429_287-933del', (31, 52)) ('patients', 'Species', '9606', (71, 79)) ('p.Cys68HisfsX21', 'Mutation', 'p.C68HfsX21', (142, 157)) ('p.Cys68HisfsX21', 'Var', (142, 157)) ('frameshift', 'Var', (96, 106)) 71594 19368708 The identification in HN-PGL families of germline mutations of SDHD (succinate dehydrogenase, subunit D) was soon followed by the identification of germline mutations in SDHB and SDHC . ('SDHB', 'Gene', '6390', (170, 174)) ('mutations', 'Var', (50, 59)) ('SDHB', 'Gene', (170, 174)) ('HN-PGL', 'Disease', 'MESH:D010235', (22, 28)) ('HN-PGL', 'Phenotype', 'HP:0002864', (22, 28)) ('succinate dehydrogenase', 'Gene', '6390', (69, 92)) ('SDHC', 'Gene', (180, 184)) ('succinate dehydrogenase', 'Gene', (69, 92)) ('SDHD', 'Gene', '6392', (63, 67)) ('SDHC', 'Gene', '6391', (180, 184)) ('SDHD', 'Gene', (63, 67)) ('HN-PGL', 'Disease', (22, 28)) 71597 19368708 Despite the fact that SDH is thought to act solely as a unified protein complex, mutations of subunit genes lead to striking differences in clinical phenotype. ('SDH', 'Gene', '6390', (22, 25)) ('SDH', 'Gene', (22, 25)) ('differences', 'Reg', (125, 136)) ('mutations', 'Var', (81, 90)) 71598 19368708 While mutations of SDHD are associated predominantly with HN-PGL, frequently multifocal and generally non-metastatic,SDHB mutation carriers frequently present with PCCs and extra-adrenal paragangliomas, and mutations of SDHB are more often found in patients with aggressive, metastatic disease. ('SDHD', 'Gene', (19, 23)) ('HN-PGL', 'Phenotype', 'HP:0002864', (58, 64)) ('SDHB', 'Gene', '6390', (220, 224)) ('SDHB', 'Gene', '6390', (117, 121)) ('PCCs', 'Disease', (164, 168)) ('mutation', 'Var', (122, 130)) ('present', 'Reg', (151, 158)) ('SDHB', 'Gene', (220, 224)) ('mutations', 'Var', (6, 15)) ('aggressive', 'Disease', (263, 273)) ('SDHB', 'Gene', (117, 121)) ('associated', 'Reg', (28, 38)) ('patients', 'Species', '9606', (249, 257)) ('HN-PGL', 'Disease', (58, 64)) ('PCC', 'Phenotype', 'HP:0002666', (164, 167)) ('paraganglioma', 'Phenotype', 'HP:0002668', (187, 200)) ('paragangliomas', 'Phenotype', 'HP:0002668', (187, 201)) ('SDHD', 'Gene', '6392', (19, 23)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (173, 201)) ('HN-PGL', 'Disease', 'MESH:D010235', (58, 64)) ('extra-adrenal paragangliomas', 'Disease', (173, 201)) 71599 19368708 Until recently mutations of SDHC were exclusively associated with HN-PGL, but have now also been identified in patients with PCC. ('SDHC', 'Gene', (28, 32)) ('PCC', 'Phenotype', 'HP:0002666', (125, 128)) ('mutations', 'Var', (15, 24)) ('HN-PGL', 'Disease', (66, 72)) ('identified', 'Reg', (97, 107)) ('HN-PGL', 'Phenotype', 'HP:0002864', (66, 72)) ('SDHC', 'Gene', '6391', (28, 32)) ('associated', 'Reg', (50, 60)) ('HN-PGL', 'Disease', 'MESH:D010235', (66, 72)) ('patients', 'Species', '9606', (111, 119)) 71600 19368708 The majority of mutations of the SDH genes described in the SDH mutation database are missense and nonsense mutations (n = 225). ('SDH', 'Gene', (60, 63)) ('SDH', 'Gene', (33, 36)) ('nonsense mutations', 'Var', (100, 118)) ('missense', 'Var', (87, 95)) ('mutations', 'Var', (16, 25)) ('SDH', 'Gene', '6390', (33, 36)) ('SDH', 'Gene', '6390', (60, 63)) 71601 19368708 To date only ten distinct large deletions of the SDH genes have been described. ('deletions', 'Var', (32, 41)) ('SDH', 'Gene', '6390', (49, 52)) ('SDH', 'Gene', (49, 52)) 71602 19368708 Although nearly all familial paraganglioma in the Netherlands is accounted for by the Dutch SDHD founder mutations p.Asp92Tyr and p.Leu139Pro, several Dutch families carrying an SDHB mutation were recently identified. ('SDHD', 'Gene', '6392', (92, 96)) ('p.Leu139Pro', 'Var', (130, 141)) ('SDHD', 'Gene', (92, 96)) ('p.Leu139Pro', 'Mutation', 'rs80338847', (130, 141)) ('p.Asp92Tyr', 'Var', (115, 125)) ('p.Asp92Tyr', 'Mutation', 'rs80338845', (115, 125)) ('familial paraganglioma', 'Disease', (20, 42)) ('SDHB', 'Gene', '6390', (178, 182)) ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (20, 42)) ('SDHB', 'Gene', (178, 182)) 71604 19368708 Nine apparently unrelated Dutch patients all showed deletions of exon 3 of the SDHB gene. ('deletions of', 'Var', (52, 64)) ('patients', 'Species', '9606', (32, 40)) ('SDHB', 'Gene', '6390', (79, 83)) ('SDHB', 'Gene', (79, 83)) 71608 19368708 DNA was available from 126 index patients who tested negative for SDHD point mutations and in whom point mutations of SDHB and SDHC were, in most cases, also excluded. ('SDHC', 'Gene', (127, 131)) ('SDHD', 'Gene', '6392', (66, 70)) ('SDHB', 'Gene', '6390', (118, 122)) ('patients', 'Species', '9606', (33, 41)) ('point mutations', 'Var', (99, 114)) ('SDHC', 'Gene', '6391', (127, 131)) ('SDHB', 'Gene', (118, 122)) ('SDHD', 'Gene', (66, 70)) 71611 19368708 Analysis of haplotypes by polymorphic di- and tetra nucleotide markers (microsatellite markers) was performed according to standard procedures (details available upon request), using the following markers: D1S436, D1S2697, D1S170, D1S3669, D1S2826 and D1S2644. ('D1S2826', 'Var', (240, 247)) ('D1S2697', 'Var', (214, 221)) ('tetra', 'Species', '42554', (46, 51)) ('D1S170', 'Var', (223, 229)) ('D1S2644', 'Var', (252, 259)) ('D1S436', 'Var', (206, 212)) ('D1S3669', 'Var', (231, 238)) 71613 19368708 The resulting PCR fragment of 8.5 kb in the patients carrying the deletion was subjected to restriction mapping using the following twelve enzymes: Alw44I, BglI, BglII, BsaHI, BspEI, EcoRI, Mph1103I, NdeI, SacI, ScaI, SmaI, XbaI. ('Mph1103I', 'Var', (190, 198)) ('patients', 'Species', '9606', (44, 52)) ('ScaI', 'Gene', '286205', (212, 216)) ('ScaI', 'Gene', (212, 216)) ('deletion', 'Var', (66, 74)) 71614 19368708 Analysis of the resulting restriction patterns narrowed the specific region of the deletion, and was followed by the design of primers 2162 (5'-CCA GTC CAT GAA AGG CAA-3') and 2164 (5'-GCT CCA TGT GTC ACG TGT TT-3'). ('TGT', 'Gene', '81890', (205, 208)) ('narrowed', 'NegReg', (47, 55)) ('deletion', 'Var', (83, 91)) ('TGT', 'Gene', (193, 196)) ('TGT', 'Gene', (205, 208)) ('TGT', 'Gene', '81890', (193, 196)) 71615 19368708 This allowed the amplification of a 1.6 kb fragment in patients carrying the deletion but not in healthy controls. ('deletion', 'Var', (77, 85)) ('amplification', 'MPA', (17, 30)) ('patients', 'Species', '9606', (55, 63)) 71621 19368708 Deletions of the SDHB gene were detected in nine patients, all affecting exon 3 (figure 1). ('SDHB', 'Gene', '6390', (17, 21)) ('affecting', 'Reg', (63, 72)) ('exon 3', 'MPA', (73, 79)) ('patients', 'Species', '9606', (49, 57)) ('SDHB', 'Gene', (17, 21)) ('Deletions', 'Var', (0, 9)) 71624 19368708 To further characterize the SDHB deletions and confirm the MLPA results, a long range PCR flanking exon 3 was designed. ('SDHB', 'Gene', '6390', (28, 32)) ('ML', 'Disease', 'MESH:C537366', (59, 61)) ('SDHB', 'Gene', (28, 32)) ('deletions', 'Var', (33, 42)) 71629 19368708 The deletion of exon 3 is predicted to result in a frameshift at the DNA level and a truncated protein, p.Cys68HisfsX21. ('p.Cys68HisfsX21', 'Var', (104, 119)) ('result in', 'Reg', (39, 48)) ('p.Cys68HisfsX21', 'Mutation', 'p.C68HfsX21', (104, 119)) ('frameshift', 'Var', (51, 61)) 71630 19368708 Although the patients had no apparent family connection, all are natives of the Netherlands and share an identical SDHB deletion. ('patients', 'Species', '9606', (13, 21)) ('deletion', 'Var', (120, 128)) ('SDHB', 'Gene', (115, 119)) ('SDHB', 'Gene', '6390', (115, 119)) 71633 19368708 Certain haplotypes have apparently mutated or recombined in selected patients, an indication that they are only distantly related. ('patients', 'Species', '9606', (69, 77)) ('mutated', 'Var', (35, 42)) ('recombined', 'Var', (46, 56)) 71660 19368708 While the majority of SDH-related hereditary HN-PGL and PCC patients carry missense and nonsense mutations, a significant proportion of patients may carry whole gene or exon deletions. ('PCC', 'Disease', (56, 59)) ('missense', 'Var', (75, 83)) ('PCC', 'Phenotype', 'HP:0002666', (56, 59)) ('patients', 'Species', '9606', (60, 68)) ('HN-PGL', 'Disease', (45, 51)) ('HN-PGL', 'Phenotype', 'HP:0002864', (45, 51)) ('SDH', 'Gene', '6390', (22, 25)) ('patients', 'Species', '9606', (136, 144)) ('nonsense mutations', 'Var', (88, 106)) ('whole gene', 'Var', (155, 165)) ('carry', 'Reg', (149, 154)) ('HN-PGL', 'Disease', 'MESH:D010235', (45, 51)) ('SDH', 'Gene', (22, 25)) 71663 19368708 Ten deletions affecting SDH genes have been described to date. ('SDH', 'Gene', '6390', (24, 27)) ('SDH', 'Gene', (24, 27)) ('deletions', 'Var', (4, 13)) 71664 19368708 first described deletions of SDHB and SDHD in two families in 2004. ('SDHB', 'Gene', '6390', (29, 33)) ('deletions', 'Var', (16, 25)) ('SDHB', 'Gene', (29, 33)) ('SDHD', 'Gene', '6392', (38, 42)) ('SDHD', 'Gene', (38, 42)) 71665 19368708 While a large SDHD deletion was associated with HN-PGL in one family, a deletion of exon 1 of SDHB in a Brazilian family resulted in extra-adrenal PGL, together with HN-PGL. ('extra-adrenal PGL', 'MPA', (133, 150)) ('HN-PGL', 'Phenotype', 'HP:0002864', (166, 172)) ('deletion of', 'Var', (72, 83)) ('SDHB', 'Gene', (94, 98)) ('HN-PGL', 'Disease', 'MESH:D010235', (166, 172)) ('deletion', 'Var', (19, 27)) ('HN-PGL', 'Disease', (48, 54)) ('SDHD', 'Gene', '6392', (14, 18)) ('HN-PGL', 'Phenotype', 'HP:0002864', (48, 54)) ('resulted in', 'Reg', (121, 132)) ('associated', 'Reg', (32, 42)) ('SDHD', 'Gene', (14, 18)) ('HN-PGL', 'Disease', 'MESH:D010235', (48, 54)) ('HN-PGL', 'Disease', (166, 172)) ('SDHB', 'Gene', '6390', (94, 98)) 71666 19368708 described a family carrying a deletion affecting exon 6 of SDHC, and including five affected members, all with HN-PGL. ('SDHC', 'Gene', (59, 63)) ('SDHC', 'Gene', '6391', (59, 63)) ('HN-PGL', 'Disease', (111, 117)) ('HN-PGL', 'Phenotype', 'HP:0002864', (111, 117)) ('deletion affecting', 'Var', (30, 48)) ('HN-PGL', 'Disease', 'MESH:D010235', (111, 117)) 71667 19368708 subsequently described deletions of SDHB in families from the Iberian peninsula, identifying the first whole gene deletion of SDHB and a deletion of exon 1. ('SDHB', 'Gene', '6390', (36, 40)) ('SDHB', 'Gene', (36, 40)) ('peninsula', 'Disease', 'None', (70, 79)) ('peninsula', 'Disease', (70, 79)) ('SDHB', 'Gene', '6390', (126, 130)) ('SDHB', 'Gene', (126, 130)) ('deletion', 'Var', (114, 122)) 71669 19368708 have recently described a novel deletion of SDHB in a patient studied in relation to metastatic paraganglioma. ('patient', 'Species', '9606', (54, 61)) ('paraganglioma', 'Disease', 'MESH:D010235', (96, 109)) ('deletion', 'Var', (32, 40)) ('SDHB', 'Gene', '6390', (44, 48)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('SDHB', 'Gene', (44, 48)) ('paraganglioma', 'Disease', (96, 109)) 71670 19368708 reported a mixed picture of both HN-PGL and extra-adrenal PGL in a family with a deletion of exon 3 of SDHD . ('HN-PGL', 'Disease', (33, 39)) ('HN-PGL', 'Disease', 'MESH:D010235', (33, 39)) ('HN-PGL', 'Phenotype', 'HP:0002864', (33, 39)) ('deletion of', 'Var', (81, 92)) ('SDHD', 'Gene', '6392', (103, 107)) ('SDHD', 'Gene', (103, 107)) 71672 19368708 This patient showed a large deletion affecting SDHB, but as no tumor material was available, the relation of SDHB to the GIST could not be demonstrated. ('tumor', 'Disease', (63, 68)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('patient', 'Species', '9606', (5, 12)) ('SDHB', 'Gene', '6390', (109, 113)) ('SDHB', 'Gene', (109, 113)) ('SDHB', 'Gene', '6390', (47, 51)) ('SDHB', 'Gene', (47, 51)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('deletion', 'Var', (28, 36)) 71673 19368708 have reported a deletion of SDHB exons 7 & 8 in a patient with bilateral pheochromocytoma. ('patient', 'Species', '9606', (50, 57)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (73, 89)) ('deletion', 'Var', (16, 24)) ('bilateral pheochromocytoma', 'Disease', 'MESH:D010673', (63, 89)) ('bilateral pheochromocytoma', 'Disease', (63, 89)) ('SDHB', 'Gene', '6390', (28, 32)) ('SDHB', 'Gene', (28, 32)) 71674 19368708 The clinical features of the SDHB exon 3 deletion patients described in this report differ from most of the reports described above in the higher than expected frequency of HN-PGL. ('HN-PGL', 'Phenotype', 'HP:0002864', (173, 179)) ('SDHB', 'Gene', '6390', (29, 33)) ('patients', 'Species', '9606', (50, 58)) ('HN-PGL', 'Disease', 'MESH:D010235', (173, 179)) ('SDHB', 'Gene', (29, 33)) ('deletion', 'Var', (41, 49)) ('HN-PGL', 'Disease', (173, 179)) 71675 19368708 Previous studies have shown that SDHB mutations predominantly predispose to abdominal or thoracic paragangliomas and adrenal PCC, but as Leiden is a national referral centre for HN-PGL, a referral bias may be operating. ('paragangliomas', 'Phenotype', 'HP:0002668', (98, 112)) ('SDHB', 'Gene', '6390', (33, 37)) ('predispose', 'Reg', (62, 72)) ('PCC', 'Phenotype', 'HP:0002666', (125, 128)) ('HN-PGL', 'Disease', (178, 184)) ('HN-PGL', 'Phenotype', 'HP:0002864', (178, 184)) ('paragangliomas', 'Disease', 'MESH:D010235', (98, 112)) ('SDHB', 'Gene', (33, 37)) ('adrenal PCC', 'Disease', (117, 128)) ('paragangliomas', 'Disease', (98, 112)) ('HN-PGL', 'Disease', 'MESH:D010235', (178, 184)) ('mutations', 'Var', (38, 47)) ('paraganglioma', 'Phenotype', 'HP:0002668', (98, 111)) 71676 19368708 While mutations of SDHB and SDHD show an intriguing divergence in related phenotypes despite the intimate association of the protein subunits, gene deletions are unlikely to show specific genotype-phenotype effects, relative to truncating or missense mutations, because all mutations are assumed to result in loss of protein function. ('SDHD', 'Gene', (28, 32)) ('SDHB', 'Gene', '6390', (19, 23)) ('protein', 'Protein', (317, 324)) ('SDHB', 'Gene', (19, 23)) ('SDHD', 'Gene', '6392', (28, 32)) ('mutations', 'Var', (6, 15)) ('loss', 'NegReg', (309, 313)) 71677 19368708 The best current estimates of penetrance for SDHB mutations are 77% at 50 years and approximately 60% at 50 yrs. ('mutations', 'Var', (50, 59)) ('SDHB', 'Gene', '6390', (45, 49)) ('SDHB', 'Gene', (45, 49)) 71681 19368708 In contrast, SDHD-related mutations show a very high penetrance, over 80% at 50 years, and also show a striking and unique imprinted or parent-of-origin inheritance, showing almost complete penetrance with paternal inheritance, while mutation carriers via the maternal line remain tumor-free throughout life. ('tumor', 'Disease', 'MESH:D009369', (281, 286)) ('SDHD', 'Gene', (13, 17)) ('mutations', 'Var', (26, 35)) ('SDHD', 'Gene', '6392', (13, 17)) ('tumor', 'Phenotype', 'HP:0002664', (281, 286)) ('tumor', 'Disease', (281, 286)) 71686 19368708 This model could provide a genetic explanation for the reduced penetrance of SDHB mutations, in which both SDHB and the modifier must be lost, requiring loss on two separate chromosomes; intrinsically less likely than a single genetic event (whole chromosome loss) which has been shown to be the mechanism in SDHD tumors. ('SDHB', 'Gene', (107, 111)) ('tumor', 'Phenotype', 'HP:0002664', (314, 319)) ('SDHB', 'Gene', '6390', (77, 81)) ('SDHD tumors', 'Disease', (309, 320)) ('SDHD tumors', 'Disease', 'MESH:D009369', (309, 320)) ('mutations', 'Var', (82, 91)) ('SDHB', 'Gene', (77, 81)) ('tumors', 'Phenotype', 'HP:0002664', (314, 320)) ('SDHB', 'Gene', '6390', (107, 111)) 71688 19368708 A unique biochemical effect of SDHB mutations seems likely in the light of the differing location and often aggressive behavior of tumors, and the high number of clinically penetrant mutations identified. ('aggressive behavior of tumors', 'Disease', (108, 137)) ('SDHB', 'Gene', (31, 35)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('aggressive behavior of tumors', 'Disease', 'MESH:D001523', (108, 137)) ('mutations', 'Var', (36, 45)) ('tumors', 'Phenotype', 'HP:0002664', (131, 137)) ('SDHB', 'Gene', '6390', (31, 35)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (108, 127)) 71690 19368708 We describe the first Dutch founder mutation of SDHB, a novel deletion of exon 3. ('mutation', 'Var', (36, 44)) ('SDHB', 'Gene', (48, 52)) ('SDHB', 'Gene', '6390', (48, 52)) 71787 33971555 In our presented case, we chose the FOLFIRINOX regimen for adjuvant chemotherapy because FOLFIRINOX was still considered as the first - line treatment option for patients with metastatic pancreatic adenocarcinoma and also had more favorable ECOG performance status compared with single-agent gemcitabine. ('patients', 'Species', '9606', (162, 170)) ('gemcitabine', 'Chemical', 'MESH:C056507', (292, 303)) ('FOLFIRINOX', 'Chemical', 'MESH:C000627770', (36, 46)) ('FOLFIRINOX', 'Chemical', 'MESH:C000627770', (89, 99)) ('pancreatic adenocarcinoma', 'Disease', 'MESH:D000230', (187, 212)) ('pancreatic adenocarcinoma', 'Disease', (187, 212)) ('FOLFIRINOX', 'Var', (89, 99)) ('carcinoma', 'Phenotype', 'HP:0030731', (203, 212)) ('pancreatic adenocarcinoma', 'Phenotype', 'HP:0006725', (187, 212)) 71807 33452231 Genetic testing identified a pathogenic mutation in NF1 and no mutations in BRCA1/2, CDC72, MEN1, or PALB2. ('PALB2', 'Gene', (101, 106)) ('NF1', 'Gene', (52, 55)) ('mutation', 'Var', (40, 48)) ('CDC72', 'Gene', (85, 90)) ('NF1', 'Gene', '4763', (52, 55)) ('pathogenic', 'Reg', (29, 39)) ('BRCA1/2', 'Gene', (76, 83)) ('BRCA1/2', 'Gene', '672;675', (76, 83)) ('MEN1', 'Gene', '4221', (92, 96)) ('MEN1', 'Gene', (92, 96)) ('PALB2', 'Gene', '79728', (101, 106)) 71840 33452231 The pathology was consistent with the initial biopsy showing a low-grade pancreatic neuroendocrine tumor with Ki67 <1% and no mitotic figures. ('pancreatic neuroendocrine tumor', 'Disease', (73, 104)) ('pancreatic neuroendocrine tumor', 'Disease', 'MESH:D018358', (73, 104)) ('Ki67', 'Var', (110, 114)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (84, 104)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('pancreatic neuroendocrine tumor', 'Phenotype', 'HP:0030405', (73, 104)) 71846 33452231 The patient underwent formal genetic testing, showing a pathogenic mutation in the NF1 gene and no mutations in BRCA1/2, CDC72, MEN1, or PALB2. ('NF1', 'Gene', '4763', (83, 86)) ('pathogenic', 'Reg', (56, 66)) ('mutation', 'Var', (67, 75)) ('MEN1', 'Gene', '4221', (128, 132)) ('MEN1', 'Gene', (128, 132)) ('patient', 'Species', '9606', (4, 11)) ('CDC72', 'Gene', (121, 126)) ('PALB2', 'Gene', (137, 142)) ('PALB2', 'Gene', '79728', (137, 142)) ('BRCA1/2', 'Gene', (112, 119)) ('NF1', 'Gene', (83, 86)) ('BRCA1/2', 'Gene', '672;675', (112, 119)) 71859 33452231 This suggests that loss of neurofibromin may be an important pathological step in development of pancreatic neuroendocrine tumors in patients with NF1. ('pancreatic neuroendocrine tumor', 'Phenotype', 'HP:0030405', (97, 128)) ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (108, 128)) ('patients', 'Species', '9606', (133, 141)) ('neurofibromin', 'Gene', (27, 40)) ('pancreatic neuroendocrine tumors', 'Disease', (97, 129)) ('pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (97, 129)) ('loss', 'Var', (19, 23)) ('NF1', 'Gene', (147, 150)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (108, 129)) ('NF1', 'Gene', '4763', (147, 150)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('neurofibromin', 'Gene', '4763', (27, 40)) 71881 33452231 The combination of these rare genetic syndromes has been reported with a dual NF1 and RET mutations resulting in neurofibromatosis and MEN syndrome and dual NF1 and BRCA1 with early-onset breast cancer. ('RET', 'Gene', '5979', (86, 89)) ('breast cancer', 'Disease', 'MESH:D001943', (188, 201)) ('mutations', 'Var', (90, 99)) ('BRCA1', 'Gene', (165, 170)) ('resulting in', 'Reg', (100, 112)) ('breast cancer', 'Phenotype', 'HP:0003002', (188, 201)) ('breast cancer', 'Disease', (188, 201)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (113, 130)) ('NF1', 'Gene', (78, 81)) ('neurofibroma', 'Phenotype', 'HP:0001067', (113, 125)) ('NF1', 'Gene', (157, 160)) ('RET', 'Gene', (86, 89)) ('NF1', 'Gene', '4763', (78, 81)) ('NF1', 'Gene', '4763', (157, 160)) ('BRCA1', 'Gene', '672', (165, 170)) ('neurofibromatosis and MEN syndrome', 'Disease', 'MESH:D018813', (113, 147)) ('cancer', 'Phenotype', 'HP:0002664', (195, 201)) 71882 33452231 Genetic testing performed by next-generation sequencing identified a pathogenic change in NF1 but no pathogenic mutation in MEN1, BRCA1, BRCA2, CDC73, or PALB2. ('CDC73', 'Gene', '79577', (144, 149)) ('BRCA1', 'Gene', (130, 135)) ('BRCA2', 'Gene', '675', (137, 142)) ('NF1', 'Gene', '4763', (90, 93)) ('MEN1', 'Gene', (124, 128)) ('PALB2', 'Gene', (154, 159)) ('MEN1', 'Gene', '4221', (124, 128)) ('PALB2', 'Gene', '79728', (154, 159)) ('change', 'Var', (80, 86)) ('BRCA2', 'Gene', (137, 142)) ('BRCA1', 'Gene', '672', (130, 135)) ('CDC73', 'Gene', (144, 149)) ('pathogenic', 'Reg', (69, 79)) ('NF1', 'Gene', (90, 93)) 71884 33452231 Finally, the presence of thyroid pathology in NF1 has been linked to autoimmune conditions, including alopecia, vitiligo, and autoimmune thyroiditis. ('alopecia', 'Phenotype', 'HP:0001596', (102, 110)) ('autoimmune conditions', 'Phenotype', 'HP:0002960', (69, 90)) ('vitiligo', 'Disease', (112, 120)) ('linked', 'Reg', (59, 65)) ('NF1', 'Gene', (46, 49)) ('autoimmune thyroiditis', 'Disease', (126, 148)) ('thyroiditis', 'Phenotype', 'HP:0100646', (137, 148)) ('NF1', 'Gene', '4763', (46, 49)) ('presence', 'Var', (13, 21)) ('autoimmune thyroiditis', 'Disease', 'MESH:D013967', (126, 148)) ('vitiligo', 'Phenotype', 'HP:0001045', (112, 120)) ('alopecia', 'Disease', (102, 110)) 71903 32810311 These include an immune-inflamed phenotype, 15 , 16 expression of T cell signaling pathway genes such as IFNgamma, 17 microsatellite instability, 18 somatic copy-number alterations, 19 human leukocyte antigen (HLA) class I diversity, 20 T cell repertoire clonality change, 21 WNT-beta-catenin signaling, 22 TGFbeta expression, 23 and even commensal microbiota. ('IFNgamma', 'Gene', '3458', (107, 115)) ('beta-catenin', 'Gene', '1499', (287, 299)) ('T cell signaling pathway genes', 'Gene', (68, 98)) ('TGFbeta', 'Gene', (315, 322)) ('alterations', 'Var', (173, 184)) ('TGFbeta', 'Gene', '7039', (315, 322)) ('beta-catenin', 'Gene', (287, 299)) ('human', 'Species', '9606', (190, 195)) ('IFNgamma', 'Gene', (107, 115)) 71962 32810311 We analyzed RNA-Seq data of 28 pretreatment tumors from melanoma patients who received anti-PD-1 ICI. ('tumors', 'Disease', (44, 50)) ('tumors', 'Disease', 'MESH:D009369', (44, 50)) ('tumors', 'Phenotype', 'HP:0002664', (44, 50)) ('melanoma', 'Disease', 'MESH:D008545', (56, 64)) ('melanoma', 'Phenotype', 'HP:0002861', (56, 64)) ('melanoma', 'Disease', (56, 64)) ('anti-PD-1', 'Var', (87, 96)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('patients', 'Species', '9606', (65, 73)) 71968 32810311 35 Axis 6 (Treg) and axis 7 (MDSC) were high in Pt25 and Pt16, respectively, suggesting that the strategies to deplete Treg or MDSC might be recommended to these patients. ('Pt16', 'Var', (58, 62)) ('Treg', 'Chemical', '-', (12, 16)) ('Pt25', 'Var', (49, 53)) ('patients', 'Species', '9606', (163, 171)) ('Treg', 'Chemical', '-', (120, 124)) 71983 32810311 For example, immunograms for hallmarks of cancer could also be compiled by adopting gene sets for the eight hallmarks: sustaining proliferative signaling, evading growth suppressors, resisting cell death, enabling replicative immortality, inducing angiogenesis, activating invasion and metastasis, reprogramming of energy metabolism, and evading immune destruction. ('death', 'Disease', 'MESH:D003643', (198, 203)) ('death', 'Disease', (198, 203)) ('hallmarks of cancer', 'Disease', (29, 48)) ('cancer', 'Phenotype', 'HP:0002664', (42, 48)) ('replicative immortality', 'CPA', (214, 237)) ('immune destruction', 'CPA', (346, 364)) ('invasion', 'CPA', (273, 281)) ('activating', 'PosReg', (262, 272)) ('enabling', 'PosReg', (205, 213)) ('inducing', 'PosReg', (239, 247)) ('reprogramming', 'Reg', (298, 311)) ('angiogenesis', 'CPA', (248, 260)) ('evading', 'Var', (155, 162)) ('hallmarks of cancer', 'Disease', 'MESH:D009369', (29, 48)) ('proliferative signaling', 'MPA', (130, 153)) ('sustaining', 'PosReg', (119, 129)) 72007 28332883 Nearly 40% of PPGLs have been attributed to germline mutations in over 15 different tumor-susceptibility genes, making these tumors a highly heritable form of neoplasia. ('neoplasia', 'Disease', (159, 168)) ('PPGLs', 'Disease', (14, 19)) ('tumor', 'Disease', 'MESH:D009369', (125, 130)) ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('neoplasia', 'Phenotype', 'HP:0002664', (159, 168)) ('tumors', 'Disease', (125, 131)) ('germline mutations', 'Var', (44, 62)) ('tumor', 'Disease', (125, 130)) ('tumor', 'Disease', (84, 89)) ('neoplasia', 'Disease', 'MESH:D009369', (159, 168)) ('tumors', 'Disease', 'MESH:D009369', (125, 131)) ('tumors', 'Phenotype', 'HP:0002664', (125, 131)) ('PPGLs', 'Chemical', '-', (14, 19)) 72008 28332883 Given this high frequency of genetic mutations, all patients with PPGLs should undergo genetic screening. ('mutations', 'Var', (37, 46)) ('patients', 'Species', '9606', (52, 60)) ('PPGLs', 'Chemical', '-', (66, 71)) ('PPGLs', 'Disease', (66, 71)) 72019 28332883 Variable expression of biosynthetic enzymes, highly influenced by the underlying mutation, leads to profound differences in the types and amounts of catecholamines being produced. ('differences', 'Reg', (109, 120)) ('mutation', 'Var', (81, 89)) ('amounts of catecholamines being produced', 'MPA', (138, 178)) ('types', 'MPA', (128, 133)) ('influenced', 'Reg', (52, 62)) ('catecholamines', 'Chemical', 'MESH:D002395', (149, 163)) 72020 28332883 This is accomplished by mutation-dependent differentiation of progenitor cells, which regulates the expression of enzymes involved in the synthesis of catecholamines. ('expression', 'MPA', (100, 110)) ('mutation-dependent', 'Var', (24, 42)) ('regulates', 'Reg', (86, 95)) ('catecholamines', 'Chemical', 'MESH:D002395', (151, 165)) 72025 28332883 In patients with PPGLs, metabolism of catecholamines within tumor cells accounts for more than 93% of elevated levels of free metanephrine and normetanephrine in the plasma. ('metanephrine', 'Chemical', 'MESH:D008676', (126, 138)) ('elevated', 'PosReg', (102, 110)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('PPGLs', 'Var', (17, 22)) ('metanephrine', 'Chemical', 'MESH:D008676', (146, 158)) ('normetanephrine', 'Chemical', 'MESH:D009647', (143, 158)) ('catecholamines', 'Chemical', 'MESH:D002395', (38, 52)) ('patients', 'Species', '9606', (3, 11)) ('PPGLs', 'Chemical', '-', (17, 22)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('metabolism of catecholamines', 'MPA', (24, 52)) ('tumor', 'Disease', (60, 65)) 72034 28332883 Measurements of this secretory protein increase the sensitivity of plasma metanephrines in diagnosing patients with PPGLs, who do not have renal insufficiency. ('patients', 'Species', '9606', (102, 110)) ('PPGLs', 'Chemical', '-', (116, 121)) ('increase', 'PosReg', (39, 47)) ('sensitivity', 'MPA', (52, 63)) ('metanephrines', 'Chemical', 'MESH:D008676', (74, 87)) ('renal insufficiency', 'Disease', (139, 158)) ('Measurements', 'Var', (0, 12)) ('PPGLs', 'Disease', (116, 121)) ('renal insufficiency', 'Disease', 'MESH:D051437', (139, 158)) ('renal insufficiency', 'Phenotype', 'HP:0000083', (139, 158)) 72043 28332883 Using metyrosine pre-operatively reportedly decreases intra-operative hemodynamic lability and postoperative cardiovascular complications. ('postoperative cardiovascular complications', 'Disease', (95, 137)) ('decreases', 'NegReg', (44, 53)) ('metyrosine', 'Chemical', 'MESH:D019805', (6, 16)) ('rat', 'Species', '10116', (102, 105)) ('intra-operative hemodynamic lability', 'MPA', (54, 90)) ('cardiovascular complications', 'Phenotype', 'HP:0001626', (109, 137)) ('rat', 'Species', '10116', (63, 66)) ('metyrosine', 'Var', (6, 16)) ('postoperative cardiovascular complications', 'Disease', 'MESH:D002318', (95, 137)) ('rat', 'Species', '10116', (24, 27)) 72052 28332883 In a case series of 8 patients undergoing laparoscopic adrenalectomy, Col et al reported greater intra-operative hemodynamic instability in patients with noradrenergic than adrenergic PPGLs. ('intra-operative hemodynamic instability', 'MPA', (97, 136)) ('noradrenergic', 'Var', (154, 167)) ('patients', 'Species', '9606', (22, 30)) ('patients', 'Species', '9606', (140, 148)) ('rat', 'Species', '10116', (106, 109)) ('PPGLs', 'Chemical', '-', (184, 189)) ('greater', 'PosReg', (89, 96)) 72056 28332883 Additionally, anecdotal evidence suggests that norepinephrine can cause vasospasms of the cerebral circulation, resulting in either a transient ischemic episode or stroke. ('ischemic', 'Disease', (144, 152)) ('stroke', 'Disease', 'MESH:D020521', (164, 170)) ('norepinephrine', 'Chemical', 'MESH:D009638', (47, 61)) ('norepinephrine', 'Var', (47, 61)) ('stroke', 'Phenotype', 'HP:0001297', (164, 170)) ('stroke', 'Disease', (164, 170)) ('ischemic', 'Disease', 'MESH:D007511', (144, 152)) ('vasospasms', 'Disease', 'MESH:D020301', (72, 82)) ('vasospasms', 'Disease', (72, 82)) 72059 28332883 Apart from cardiovascular damage, norepinephrine significantly hampers intestinal motility, causing a decrease in peristalsis that results in constipation, sometimes intractable, and pseudo-obstruction, especially in patients with metastatic disease. ('constipation', 'Phenotype', 'HP:0002019', (142, 154)) ('results in', 'Reg', (131, 141)) ('constipation', 'Disease', 'MESH:D003248', (142, 154)) ('obstruction', 'Disease', 'MESH:D000402', (190, 201)) ('peristalsis', 'MPA', (114, 125)) ('decrease', 'NegReg', (102, 110)) ('intestinal motility', 'CPA', (71, 90)) ('metastatic disease', 'Disease', (231, 249)) ('norepinephrine', 'Chemical', 'MESH:D009638', (34, 48)) ('norepinephrine', 'Var', (34, 48)) ('constipation', 'Disease', (142, 154)) ('obstruction', 'Disease', (190, 201)) ('cardiovascular damage', 'Disease', 'MESH:D002318', (11, 32)) ('patients', 'Species', '9606', (217, 225)) ('hampers', 'NegReg', (63, 70)) ('cardiovascular damage', 'Disease', (11, 32)) 72062 28332883 A typical noradrenergic phenotype is suggestive of mutations in the tumor suppressor von Hippel-Lindau (VHL) in VHL syndrome, succinate dehydrogenase (SDH) type A, B, C, or D, fumarate hydratase (FH), malate dehydrogenase, and endothelial pas domain protein 1/hypoxiainducible factor type 2A (EPAS1/HIF2A) genes (Table 2). ('VHL', 'Gene', '7428', (104, 107)) ('mutations', 'Var', (51, 60)) ('VHL', 'Gene', '7428', (112, 115)) ('tumor', 'Disease', (68, 73)) ('SDH', 'Gene', '6390', (151, 154)) ('FH', 'Gene', '2271', (196, 198)) ('succinate dehydrogenase', 'Gene', '6390', (126, 149)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('EPAS1', 'Gene', '2034', (293, 298)) ('fumarate hydratase', 'Gene', (176, 194)) ('hypoxia', 'Disease', (260, 267)) ('SDH', 'Gene', (151, 154)) ('VHL syndrome', 'Disease', (112, 124)) ('malate dehydrogenase', 'Gene', '10873', (201, 221)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('VHL', 'Gene', (104, 107)) ('hypoxia', 'Disease', 'MESH:D000860', (260, 267)) ('HIF2A', 'Gene', '2034', (299, 304)) ('succinate dehydrogenase', 'Gene', (126, 149)) ('VHL', 'Gene', (112, 115)) ('malate dehydrogenase', 'Gene', (201, 221)) ('fumarate hydratase', 'Gene', '2271', (176, 194)) ('HIF2A', 'Gene', (299, 304)) ('EPAS1', 'Gene', (293, 298)) ('VHL syndrome', 'Disease', 'MESH:D006623', (112, 124)) 72063 28332883 The pathogenesis of PPGLs harboring these mutations is characterized by a (pseudo)hypoxic signature and is referred to as cluster 1. ('mutations', 'Var', (42, 51)) ('PPGLs', 'Gene', (20, 25)) ('PPGLs', 'Chemical', '-', (20, 25)) 72064 28332883 Succinate dehydrogenase complex assembly factor 2 (SDHAF2)-mutated PPGLs have also been identified as part of cluster 1. ('PPGLs', 'Gene', (67, 72)) ('PPGLs', 'Chemical', '-', (67, 72)) ('SDHAF2', 'Gene', (51, 57)) ('Succinate dehydrogenase complex assembly factor 2', 'Gene', (0, 49)) ('SDHAF2', 'Gene', '54949', (51, 57)) ('-mutated', 'Var', (58, 66)) ('Succinate dehydrogenase complex assembly factor 2', 'Gene', '54949', (0, 49)) 72072 28332883 Furthermore, immature progenitor cells with deregulated HIF-2alpha are more prone to tumorigenic influences such as impairment of apoptosis, leading to proliferation of poorly differentiated cells that do not express phenylethanolamine N-methyltransferase (PNMT). ('tumor', 'Disease', (85, 90)) ('prone', 'Reg', (76, 81)) ('phenylethanolamine N-methyltransferase', 'Gene', (217, 255)) ('HIF-2alpha', 'Gene', '2034', (56, 66)) ('apoptosis', 'CPA', (130, 139)) ('proliferation', 'CPA', (152, 165)) ('deregulated', 'Var', (44, 55)) ('phenylethanolamine N-methyltransferase', 'Gene', '5409', (217, 255)) ('PNMT', 'Gene', '5409', (257, 261)) ('PNMT', 'Gene', (257, 261)) ('tumor', 'Disease', 'MESH:D009369', (85, 90)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('poorly differentiated cells', 'CPA', (169, 196)) ('rat', 'Species', '10116', (159, 162)) ('HIF-2alpha', 'Gene', (56, 66)) 72074 28332883 Studies have demonstrated an epigenetic silencing pattern of the PNMT gene in patients with VHL and SDHx mutations. ('SDH', 'Gene', '6390', (100, 103)) ('VHL', 'Gene', (92, 95)) ('patients', 'Species', '9606', (78, 86)) ('SDH', 'Gene', (100, 103)) ('VHL', 'Gene', '7428', (92, 95)) ('mutations', 'Var', (105, 114)) ('rat', 'Species', '10116', (20, 23)) ('PNMT', 'Gene', (65, 69)) ('epigenetic silencing pattern', 'MPA', (29, 57)) ('PNMT', 'Gene', '5409', (65, 69)) 72075 28332883 Hypermethylation of this gene's promoter region results in markedly reduced levels of the PNMT enzyme. ('Hypermethylation', 'Var', (0, 16)) ('PNMT', 'Gene', '5409', (90, 94)) ('levels of', 'MPA', (76, 85)) ('reduced', 'NegReg', (68, 75)) ('PNMT', 'Gene', (90, 94)) 72076 28332883 More specifically in SDHx mutations, accumulation of the oncometabolite succinate inhibits histone and DNA demethylases. ('SDH', 'Gene', (21, 24)) ('mutations', 'Var', (26, 35)) ('SDH', 'Gene', '6390', (21, 24)) ('inhibits', 'NegReg', (82, 90)) ('succinate', 'Chemical', 'MESH:D019802', (72, 81)) 72078 28332883 Furthermore, independent epigenetic silencing of the PNMT gene has also been reported in sporadic noradrenergic PPGLs. ('epigenetic silencing', 'Var', (25, 45)) ('PPGLs', 'Chemical', '-', (112, 117)) ('PNMT', 'Gene', (53, 57)) ('PNMT', 'Gene', '5409', (53, 57)) ('reported', 'Reg', (77, 85)) ('noradrenergic PPGLs', 'Disease', (98, 117)) 72079 28332883 Further involvement of the tricarboxylic acid (TCA) cycle metabolites in the pathogenesis of PPGLs is evident by the discovery of loss-of-function mutations in the tumor suppressor FH and MDH2. ('FH', 'Gene', '2271', (181, 183)) ('mutations', 'Var', (147, 156)) ('MDH2', 'Gene', (188, 192)) ('tumor', 'Disease', (164, 169)) ('loss-of-function', 'NegReg', (130, 146)) ('PPGLs', 'Disease', (93, 98)) ('TCA', 'Chemical', 'MESH:D014233', (47, 50)) ('tumor', 'Disease', 'MESH:D009369', (164, 169)) ('PPGLs', 'Chemical', '-', (93, 98)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (27, 45)) ('tumor', 'Phenotype', 'HP:0002664', (164, 169)) ('MDH2', 'Gene', '4191', (188, 192)) 72080 28332883 Accumulation of fumarate in patients with FH mutations inhibits the action of PHDs and leads to activation of the HIF signaling pathway. ('fumarate', 'Chemical', 'MESH:D005650', (16, 24)) ('FH', 'Gene', '2271', (42, 44)) ('mutations', 'Var', (45, 54)) ('HIF signaling pathway', 'Pathway', (114, 135)) ('PHDs', 'Disease', 'None', (78, 82)) ('inhibits', 'NegReg', (55, 63)) ('patients', 'Species', '9606', (28, 36)) ('PHDs', 'Disease', (78, 82)) ('activation', 'PosReg', (96, 106)) 72081 28332883 Additionally, PPGLs deficient in FH and MDH2 display transcriptional profiles and epigenetic hypermethylation patterns similar to SDHx-mutated PPGLs. ('SDH', 'Gene', (130, 133)) ('epigenetic hypermethylation', 'MPA', (82, 109)) ('transcriptional profiles', 'MPA', (53, 77)) ('FH', 'Gene', '2271', (33, 35)) ('deficient', 'Var', (20, 29)) ('PPGLs', 'Chemical', '-', (143, 148)) ('PPGLs', 'Chemical', '-', (14, 19)) ('MDH2', 'Gene', '4191', (40, 44)) ('MDH2', 'Gene', (40, 44)) ('SDH', 'Gene', '6390', (130, 133)) 72082 28332883 Therefore, similarities in the tumorigenic mechanisms and the epigenetic remodeling profile associated with genetic mutations in this cluster result in downregulation of genes involved in progenitor cell differentiation. ('downregulation', 'NegReg', (152, 166)) ('tumor', 'Phenotype', 'HP:0002664', (31, 36)) ('tumor', 'Disease', (31, 36)) ('progenitor cell differentiation', 'CPA', (188, 219)) ('mutations', 'Var', (116, 125)) ('tumor', 'Disease', 'MESH:D009369', (31, 36)) 72085 28332883 In addition, there is a constant secretion of catecholamines that is unresponsive to secretagogues in PPGLs with a VHL mutation, pointing towards a poorly differentiated constitutive secretory pathway. ('VHL', 'Gene', (115, 118)) ('mutation', 'Var', (119, 127)) ('catecholamines', 'Chemical', 'MESH:D002395', (46, 60)) ('VHL', 'Gene', '7428', (115, 118)) ('PPGLs', 'Chemical', '-', (102, 107)) ('secretion of catecholamines', 'MPA', (33, 60)) 72088 28332883 Based on case reports, patients with SDHA mutations present with noradrenergic adrenal and extra-adrenal PPGLs as well as biochemically silent head and neck paragangliomas (HNPGLs). ('paraganglioma', 'Phenotype', 'HP:0002668', (157, 170)) ('noradrenergic', 'MPA', (65, 78)) ('PPGLs', 'Chemical', '-', (105, 110)) ('paragangliomas', 'Phenotype', 'HP:0002668', (157, 171)) ('patients', 'Species', '9606', (23, 31)) ('silent head and neck paragangliomas', 'Disease', 'MESH:D006258', (136, 171)) ('SDHA', 'Gene', (37, 41)) ('SDHA', 'Gene', '6389', (37, 41)) ('mutations', 'Var', (42, 51)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (152, 171)) 72089 28332883 In our cohort of patients with SDHA mutations, we have noted aggressive behavior in both nonsecreting HNPGLs as well as noradrenergic extra-adrenal tumors, some of which also cosecrete dopamine (unpublished findings). ('extra-adrenal tumor', 'Disease', (134, 153)) ('SDHA', 'Gene', '6389', (31, 35)) ('adrenal tumors', 'Disease', 'MESH:D000310', (140, 154)) ('dopamine', 'Chemical', 'MESH:D004298', (185, 193)) ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('aggressive', 'MPA', (61, 71)) ('nonsecreting HNPGLs', 'Disease', (89, 108)) ('noradrenergic', 'Disease', (120, 133)) ('mutations', 'Var', (36, 45)) ('SDHA', 'Gene', (31, 35)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (140, 153)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (61, 80)) ('patients', 'Species', '9606', (17, 25)) ('tumors', 'Phenotype', 'HP:0002664', (148, 154)) ('adrenal tumors', 'Disease', (140, 154)) ('extra-adrenal tumor', 'Disease', 'MESH:D010236', (134, 153)) 72090 28332883 A similar pattern has also been described in patients with SDHC mutations. ('SDHC', 'Gene', '6391', (59, 63)) ('SDHC', 'Gene', (59, 63)) ('patients', 'Species', '9606', (45, 53)) ('mutations', 'Var', (64, 73)) 72091 28332883 To our best knowledge, only 25 patients with SDHC mutations have been reported worldwide. ('mutations', 'Var', (50, 59)) ('SDHC', 'Gene', (45, 49)) ('SDHC', 'Gene', '6391', (45, 49)) ('patients', 'Species', '9606', (31, 39)) 72095 28332883 The majority of patients with SDHB and SDHD mutations have elevations in normetanephrine levels, with over 67% also displaying high levels of plasma 3-MT. ('normetanephrine levels', 'MPA', (73, 95)) ('high levels of plasma 3-MT', 'MPA', (127, 153)) ('patients', 'Species', '9606', (16, 24)) ('SDHD', 'Gene', (39, 43)) ('SDHD', 'Gene', '6392', (39, 43)) ('SDHB', 'Gene', '6390', (30, 34)) ('mutations', 'Var', (44, 53)) ('SDHB', 'Gene', (30, 34)) ('elevations', 'Reg', (59, 69)) ('normetanephrine', 'Chemical', 'MESH:D009647', (73, 88)) 72096 28332883 Adrenal PPGLs in patients with a SDHD mutation cause solitary increases in norepinephrine more frequently compared to HNPGLs. ('PPGLs', 'Chemical', '-', (8, 13)) ('SDHD', 'Gene', '6392', (33, 37)) ('norepinephrine', 'Chemical', 'MESH:D009638', (75, 89)) ('increases', 'PosReg', (62, 71)) ('SDHD', 'Gene', (33, 37)) ('patients', 'Species', '9606', (17, 25)) ('mutation', 'Var', (38, 46)) 72098 28332883 Most patients with SDHB and SDHD mutations reportedly present with hypertension as the primary manifestation of catecholamine overproduction. ('SDHD', 'Gene', (28, 32)) ('SDHB', 'Gene', '6390', (19, 23)) ('patients', 'Species', '9606', (5, 13)) ('hypertension', 'Disease', (67, 79)) ('hypertension', 'Phenotype', 'HP:0000822', (67, 79)) ('mutations', 'Var', (33, 42)) ('SDHB', 'Gene', (19, 23)) ('present', 'Reg', (54, 61)) ('SDHD', 'Gene', '6392', (28, 32)) ('catecholamine', 'Chemical', 'MESH:D002395', (112, 125)) ('hypertension', 'Disease', 'MESH:D006973', (67, 79)) 72100 28332883 A mutation in the EPAS1/HIF2A gene causes a defect in the proline residue at the hydroxylation site of HIF-2alpha, leading to its stabilization. ('mutation', 'Var', (2, 10)) ('HIF2A', 'Gene', '2034', (24, 29)) ('proline', 'Chemical', 'MESH:D011392', (58, 65)) ('HIF-2alpha', 'Gene', '2034', (103, 113)) ('proline residue at the hydroxylation site', 'MPA', (58, 99)) ('stabilization', 'MPA', (130, 143)) ('EPAS1', 'Gene', '2034', (18, 23)) ('EPAS1', 'Gene', (18, 23)) ('HIF2A', 'Gene', (24, 29)) ('HIF-2alpha', 'Gene', (103, 113)) ('defect', 'NegReg', (44, 50)) 72101 28332883 Patients with a mutation in this gene present with significantly elevated plasma norepinephrine and normetanephrine levels owing to involvement of HIF-2alpha in catecholamine synthesis. ('catecholamine', 'Chemical', 'MESH:D002395', (161, 174)) ('involvement', 'Reg', (132, 143)) ('mutation', 'Var', (16, 24)) ('HIF-2alpha', 'Gene', '2034', (147, 157)) ('norepinephrine', 'Chemical', 'MESH:D009638', (81, 95)) ('Patients', 'Species', '9606', (0, 8)) ('catecholamine synthesis', 'MPA', (161, 184)) ('elevated', 'PosReg', (65, 73)) ('normetanephrine', 'Chemical', 'MESH:D009647', (100, 115)) ('HIF-2alpha', 'Gene', (147, 157)) 72104 28332883 The association between mutations in the FH gene and PPGLs was first identified in 2013, after which more gene analysis studies were performed and reported germline FH mutations in a total of eight cases worldwide. ('PPGLs', 'Chemical', '-', (53, 58)) ('FH', 'Gene', '2271', (165, 167)) ('FH', 'Gene', '2271', (41, 43)) ('association', 'Interaction', (4, 15)) ('PPGLs', 'Gene', (53, 58)) ('mutations', 'Var', (24, 33)) 72106 28332883 We have noted similar findings in our cohort of patients with FH mutations, some of which also cosecrete dopamine (unpublished findings). ('FH', 'Gene', '2271', (62, 64)) ('cosecrete dopamine', 'MPA', (95, 113)) ('dopamine', 'Chemical', 'MESH:D004298', (105, 113)) ('patients', 'Species', '9606', (48, 56)) ('mutations', 'Var', (65, 74)) 72107 28332883 Germline mutations in MDH2, which encodes the enzyme catalyzing the oxidation of malate to oxaloacetate, were also found to be a cause of PPGLs. ('Germline mutations', 'Var', (0, 18)) ('cause', 'Reg', (129, 134)) ('PPGLs', 'Disease', (138, 143)) ('malate', 'Chemical', 'MESH:C030298', (81, 87)) ('oxaloacetate', 'Chemical', 'MESH:D062907', (91, 103)) ('PPGLs', 'Chemical', '-', (138, 143)) ('MDH2', 'Gene', '4191', (22, 26)) ('MDH2', 'Gene', (22, 26)) 72108 28332883 In our cohort of patients with MDH2 mutations, we have noted a noradrenergic phenotype, similar to the biochemical phenotype resulting from mutations in other genes of this cluster (unpublished findings). ('noradrenergic phenotype', 'MPA', (63, 86)) ('mutations', 'Var', (36, 45)) ('MDH2', 'Gene', '4191', (31, 35)) ('MDH2', 'Gene', (31, 35)) ('patients', 'Species', '9606', (17, 25)) 72109 28332883 Although much is yet to be discovered about the clinical aspects of PPGLs deficient in these enzymes, the similarities in the underlying tumorigenic mechanisms and epigenetic remodeling observed between the mutations in this cluster play an important role in the resultant biochemical phenotype. ('deficient', 'NegReg', (74, 83)) ('tumor', 'Disease', (137, 142)) ('PPGLs', 'Gene', (68, 73)) ('PPGLs', 'Chemical', '-', (68, 73)) ('mutations', 'Var', (207, 216)) ('tumor', 'Disease', 'MESH:D009369', (137, 142)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) 72111 28332883 Patients harboring a mutation in this gene most commonly present with multifocal HNPGLs. ('Patients', 'Species', '9606', (0, 8)) ('multifocal', 'Disease', (70, 80)) ('mutation', 'Var', (21, 29)) 72112 28332883 A study in 2014 identified for the first time 2 patients with SDHAF2 mutations and adrenal tumors. ('tumors', 'Phenotype', 'HP:0002664', (91, 97)) ('mutations', 'Var', (69, 78)) ('SDHAF2', 'Gene', (62, 68)) ('SDHAF2', 'Gene', '54949', (62, 68)) ('adrenal tumors', 'Disease', 'MESH:D000310', (83, 97)) ('patients', 'Species', '9606', (48, 56)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (83, 96)) ('adrenal tumors', 'Disease', (83, 97)) 72114 28332883 To our knowledge, no other data have been published regarding the biochemical features of PPGLs in patients harboring a mutation in this gene. ('patients', 'Species', '9606', (99, 107)) ('PPGLs', 'Gene', (90, 95)) ('mutation', 'Var', (120, 128)) ('PPGLs', 'Chemical', '-', (90, 95)) 72115 28332883 Therefore, the biochemical characteristics of patients with SDHAF2 mutations remain elusive. ('patients', 'Species', '9606', (46, 54)) ('SDHAF2', 'Gene', (60, 66)) ('SDHAF2', 'Gene', '54949', (60, 66)) ('mutations', 'Var', (67, 76)) 72117 28332883 Patients with normal metanephrine levels or elevated normetanephrine levels should undergo genetic screening for mutations in the aforementioned genes, especially if other syndromic features are absent. ('normetanephrine', 'MPA', (53, 68)) ('normetanephrine', 'Chemical', 'MESH:D009647', (53, 68)) ('metanephrine', 'Chemical', 'MESH:D008676', (56, 68)) ('Patients', 'Species', '9606', (0, 8)) ('mutations', 'Var', (113, 122)) ('metanephrine levels', 'MPA', (21, 40)) ('metanephrine', 'Chemical', 'MESH:D008676', (21, 33)) 72120 28332883 PPGLs of the adrenergic phenotype are characterized by marked increases in metanephrine levels, representing an underlying predominant production and secretion of epinephrine. ('metanephrine levels', 'MPA', (75, 94)) ('increases', 'PosReg', (62, 71)) ('PPGLs', 'Var', (0, 5)) ('PPGLs', 'Chemical', '-', (0, 5)) ('epinephrine', 'Chemical', 'MESH:D004837', (163, 174)) ('metanephrine', 'Chemical', 'MESH:D008676', (75, 87)) 72142 28332883 In addition to the rearranged during transfection (RET) proto-oncogene in MEN2, a typical adrenergic phenotype is also indicative of mutations in the neurofibromatosis type 1 (NF1) tumor-suppressor gene. ('NF1', 'Gene', '4763', (176, 179)) ('adrenergic phenotype', 'MPA', (90, 110)) ('NF1', 'Gene', (176, 179)) ('tumor', 'Disease', (181, 186)) ('RET', 'Gene', '5979', (51, 54)) ('neurofibromatosis', 'Disease', (150, 167)) ('RET', 'Gene', (51, 54)) ('mutations', 'Var', (133, 142)) ('tumor', 'Disease', 'MESH:D009369', (181, 186)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (150, 167)) ('neurofibromatosis', 'Disease', 'MESH:C537392', (150, 167)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) 72143 28332883 Mutations in these genes are grouped together and referred to as cluster 2 because they cause activation of kinase signaling pathways, rat sarcoma oncogene/rapidly accelerated fibrosarcoma/mitogen-activated protein kinase (i.e., the RAS/RAF/MAPK pathway) and phosphatidylinositol-3-kinase/RAC-alpha serine/threonine-protein kinase/mammalian target of rapamycin (i.e., the PI3K/AKT/mTOR pathway). ('fibrosarcoma', 'Phenotype', 'HP:0100244', (176, 188)) ('serine', 'Chemical', 'MESH:D012694', (299, 305)) ('sarcoma', 'Disease', 'MESH:D012509', (181, 188)) ('rapamycin', 'Chemical', 'MESH:D020123', (351, 360)) ('kinase signaling pathways', 'Pathway', (108, 133)) ('sarcoma', 'Disease', (181, 188)) ('fibrosarcoma', 'Disease', 'MESH:D005354', (176, 188)) ('mammalian', 'Species', '9606', (331, 340)) ('rat', 'Species', '10116', (135, 138)) ('accelerated', 'PosReg', (164, 175)) ('Mutations', 'Var', (0, 9)) ('fibrosarcoma', 'Disease', (176, 188)) ('AKT', 'Gene', (377, 380)) ('mTOR', 'Gene', (381, 385)) ('sarcoma', 'Phenotype', 'HP:0100242', (181, 188)) ('sarcoma', 'Disease', 'MESH:D012509', (139, 146)) ('sarcoma', 'Disease', (139, 146)) ('mTOR', 'Gene', '2475', (381, 385)) ('activation', 'PosReg', (94, 104)) ('phosphatidylinositol-3-kinase/RAC-alpha', 'Enzyme', (259, 298)) ('rat', 'Species', '10116', (170, 173)) ('AKT', 'Gene', '207', (377, 380)) ('sarcoma', 'Phenotype', 'HP:0100242', (139, 146)) 72148 28332883 Despite a high expression of TH and large amounts of tumor tissue catecholamines, 30 to 50% of patients with MEN2 do not exhibit symptoms of catecholamine excess. ('patients', 'Species', '9606', (95, 103)) ('tumor', 'Disease', 'MESH:D009369', (53, 58)) ('catecholamine', 'Chemical', 'MESH:D002395', (66, 79)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('MEN2', 'Var', (109, 113)) ('catecholamine', 'Chemical', 'MESH:D002395', (141, 154)) ('tumor', 'Disease', (53, 58)) ('catecholamines', 'Chemical', 'MESH:D002395', (66, 80)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (141, 161)) 72154 28332883 PPGLs with TMEM127 mutations have a transcriptional signature similar to PPGLs with mutations in the RET and NF1 genes. ('TMEM127', 'Gene', '55654', (11, 18)) ('NF1', 'Gene', (109, 112)) ('mutations', 'Var', (19, 28)) ('PPGLs', 'Chemical', '-', (0, 5)) ('transcriptional', 'MPA', (36, 51)) ('RET', 'Gene', '5979', (101, 104)) ('NF1', 'Gene', '4763', (109, 112)) ('PPGLs', 'Chemical', '-', (73, 78)) ('TMEM127', 'Gene', (11, 18)) ('RET', 'Gene', (101, 104)) 72155 28332883 This finding correlates with the presence of predominantly high plasma metanephrine levels in patients with TMEM127 mutations, representing an underlying production of epinephrine. ('TMEM127', 'Gene', (108, 115)) ('TMEM127', 'Gene', '55654', (108, 115)) ('patients', 'Species', '9606', (94, 102)) ('epinephrine', 'Chemical', 'MESH:D004837', (168, 179)) ('mutations', 'Var', (116, 125)) ('high', 'PosReg', (59, 63)) ('metanephrine', 'Chemical', 'MESH:D008676', (71, 83)) 72157 28332883 In a study consisting of 23 patients with MAX mutations, the expression of PNMT and the levels of urinary metanephrine and tumor epinephrine (8.4%) were intermediate between the classic adrenergic and noradrenergic phenotypes. ('metanephrine', 'Chemical', 'MESH:D008676', (106, 118)) ('mutations', 'Var', (46, 55)) ('tumor', 'Disease', (123, 128)) ('epinephrine', 'Chemical', 'MESH:D004837', (129, 140)) ('MAX', 'Gene', '4149', (42, 45)) ('MAX', 'Gene', (42, 45)) ('PNMT', 'Gene', (75, 79)) ('PNMT', 'Gene', '5409', (75, 79)) ('tumor', 'Disease', 'MESH:D009369', (123, 128)) ('patients', 'Species', '9606', (28, 36)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) 72161 28332883 Patients presenting with predominantly elevated levels of metanephrine should undergo genetic screening for RET and NF1 mutations. ('metanephrine', 'Chemical', 'MESH:D008676', (58, 70)) ('RET', 'Gene', '5979', (108, 111)) ('Patients', 'Species', '9606', (0, 8)) ('levels of metanephrine', 'MPA', (48, 70)) ('RET', 'Gene', (108, 111)) ('NF1', 'Gene', (116, 119)) ('mutations', 'Var', (120, 129)) ('NF1', 'Gene', '4763', (116, 119)) 72162 28332883 However, patients with these mutations are usually first diagnosed based on other syndromic features of the disease and may only require genetic testing to confirm the suspicion. ('syndromic features of the disease', 'Disease', (82, 115)) ('patients', 'Species', '9606', (9, 17)) ('mutations', 'Var', (29, 38)) ('syndromic features of the disease', 'Disease', 'MESH:D003141', (82, 115)) 72163 28332883 Genetic screening for TMEM127 may be considered for adrenergic PPGLs once mutations in RET and NF1 have been ruled out. ('RET', 'Gene', '5979', (87, 90)) ('NF1', 'Gene', (95, 98)) ('Genetic', 'Var', (0, 7)) ('NF1', 'Gene', '4763', (95, 98)) ('TMEM127', 'Gene', (22, 29)) ('TMEM127', 'Gene', '55654', (22, 29)) ('PPGLs', 'Chemical', '-', (63, 68)) ('RET', 'Gene', (87, 90)) 72184 28332883 This finding may be due to proliferation of poorly differentiated progenitor cells, as is seen in patients with metastatic disease and SDHB and SDHD mutations. ('SDHB', 'Gene', '6390', (135, 139)) ('metastatic disease', 'Disease', (112, 130)) ('mutations', 'Var', (149, 158)) ('SDHB', 'Gene', (135, 139)) ('patients', 'Species', '9606', (98, 106)) ('SDHD', 'Gene', '6392', (144, 148)) ('SDHD', 'Gene', (144, 148)) ('rat', 'Species', '10116', (34, 37)) 72185 28332883 Patients with these mutations show increases in dopamine and 3-MT levels in addition to elevations in normetanephrine levels. ('elevations', 'PosReg', (88, 98)) ('increases', 'PosReg', (35, 44)) ('dopamine', 'Chemical', 'MESH:D004298', (48, 56)) ('normetanephrine', 'Chemical', 'MESH:D009647', (102, 117)) ('normetanephrine levels', 'MPA', (102, 124)) ('Patients', 'Species', '9606', (0, 8)) ('mutations', 'Var', (20, 29)) 72186 28332883 In a case series of 29 patients with SDHB mutations, only 1 patient with a para-adrenal PPGL was found to be exclusively dopamine secreting. ('patient', 'Species', '9606', (60, 67)) ('SDHB', 'Gene', '6390', (37, 41)) ('patients', 'Species', '9606', (23, 31)) ('PPGL', 'Chemical', '-', (88, 92)) ('dopamine', 'Chemical', 'MESH:D004298', (121, 129)) ('SDHB', 'Gene', (37, 41)) ('mutations', 'Var', (42, 51)) ('patient', 'Species', '9606', (23, 30)) 72188 28332883 In addition to being elevated in over two-thirds of patients with SDHB and SDHD mutations, 3-MT also serves as a marker of multifocal disease, extra-adrenal tumor location, and an increased risk of malignancy. ('SDHB', 'Gene', (66, 70)) ('extra-adrenal tumor', 'Disease', (143, 162)) ('multifocal disease', 'Disease', (123, 141)) ('extra-adrenal tumor', 'Disease', 'MESH:D010236', (143, 162)) ('multifocal disease', 'Disease', 'MESH:D000080364', (123, 141)) ('mutations', 'Var', (80, 89)) ('SDHD', 'Gene', '6392', (75, 79)) ('elevated', 'PosReg', (21, 29)) ('SDHD', 'Gene', (75, 79)) ('malignancy', 'Disease', 'MESH:D009369', (198, 208)) ('malignancy', 'Disease', (198, 208)) ('tumor', 'Phenotype', 'HP:0002664', (157, 162)) ('SDHB', 'Gene', '6390', (66, 70)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (149, 162)) ('patients', 'Species', '9606', (52, 60)) 72190 28332883 Recently, a case series of patients with SDHC mutations described 2 of 18 patients with exclusively dopamine secreting HNPGLs. ('dopamine', 'Chemical', 'MESH:D004298', (100, 108)) ('exclusively dopamine secreting', 'MPA', (88, 118)) ('mutations', 'Var', (46, 55)) ('SDHC', 'Gene', (41, 45)) ('patients', 'Species', '9606', (74, 82)) ('SDHC', 'Gene', '6391', (41, 45)) ('patients', 'Species', '9606', (27, 35)) 72192 28332883 Unlike adrenergic and noradrenergic PPGLs, patients with dopaminergic PPGLs who receive pre-operative alpha-adrenoceptor blockade reportedly develop severe hypotension and cardiovascular collapse both intra- and postoperatively. ('cardiovascular collapse', 'CPA', (172, 195)) ('develop', 'PosReg', (141, 148)) ('hypotension', 'Disease', (156, 167)) ('PPGLs', 'Chemical', '-', (36, 41)) ('patients', 'Species', '9606', (43, 51)) ('rat', 'Species', '10116', (95, 98)) ('cardiovascular collapse', 'Phenotype', 'HP:0030149', (172, 195)) ('hypotension', 'Phenotype', 'HP:0002615', (156, 167)) ('PPGLs', 'Chemical', '-', (70, 75)) ('PPGLs', 'Var', (70, 75)) ('dopamine', 'Chemical', 'MESH:D004298', (57, 65)) ('rat', 'Species', '10116', (219, 222)) ('hypotension', 'Disease', 'MESH:D007022', (156, 167)) 72200 28332883 These features are typical of isolated cases of HNPGLs, a large majority of which are seen in patients with SDHB and SDHD mutations. ('SDHB', 'Gene', (108, 112)) ('patients', 'Species', '9606', (94, 102)) ('seen', 'Reg', (86, 90)) ('mutations', 'Var', (122, 131)) ('SDHD', 'Gene', (117, 121)) ('SDHB', 'Gene', '6390', (108, 112)) ('SDHD', 'Gene', '6392', (117, 121)) 72202 28332883 In addition, VHL, RET, NF1, SDHA, FH, and TMEM127 mutations have also been anecdotally associated with biochemically silent HNPGLs. ('silent HNPGLs', 'Disease', 'MESH:C566065', (117, 130)) ('RET', 'Gene', '5979', (18, 21)) ('TMEM127', 'Gene', '55654', (42, 49)) ('mutations', 'Var', (50, 59)) ('NF1', 'Gene', (23, 26)) ('SDHA', 'Gene', (28, 32)) ('associated', 'Reg', (87, 97)) ('VHL', 'Gene', (13, 16)) ('NF1', 'Gene', '4763', (23, 26)) ('FH', 'Gene', '2271', (34, 36)) ('VHL', 'Gene', '7428', (13, 16)) ('silent HNPGLs', 'Disease', (117, 130)) ('RET', 'Gene', (18, 21)) ('SDHA', 'Gene', '6389', (28, 32)) ('TMEM127', 'Gene', (42, 49)) 72203 28332883 In 2008, Timmers et al reported biochemically silent abdominal PPGLs in 4 patients with SDHB mutations. ('mutations', 'Var', (93, 102)) ('abdominal PPGLs', 'Disease', (53, 68)) ('patients', 'Species', '9606', (74, 82)) ('SDHB', 'Gene', '6390', (88, 92)) ('SDHB', 'Gene', (88, 92)) ('PPGLs', 'Chemical', '-', (63, 68)) 72212 28332883 Biochemical properties of PPGLs are attributed to the underlying genetic mutation, which influences (i) differentiation of tumor progenitor cells, (ii) catecholamine biosynthetic enzymes, (iii) secretory pathways, and (iv) epigenetic remodeling profiles. ('influences', 'Reg', (89, 99)) ('tumor', 'Disease', (123, 128)) ('differentiation', 'CPA', (104, 119)) ('PPGLs', 'Chemical', '-', (26, 31)) ('epigenetic', 'MPA', (223, 233)) ('PPGLs', 'Gene', (26, 31)) ('catecholamine', 'Chemical', 'MESH:D002395', (152, 165)) ('secretory pathways', 'Pathway', (194, 212)) ('tumor', 'Disease', 'MESH:D009369', (123, 128)) ('mutation', 'Var', (73, 81)) ('catecholamine biosynthetic', 'MPA', (152, 178)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) 72249 32455070 They usually present as a single unilateral tumor; however, in 10-50% of cases, they are part of hereditary syndromes like multiple endocrine neoplasia (MEN) types 2A and 2B, Von Hippel Lindau disease, neurofibromatosis type 1, Carney-Stratakis dyad, and familial paraganglioma associated with mutations in genes encoding succinate dehydrogenases B, C, and D. The median age at diagnosis in sporadic form is between 20 and 50 years, while the hereditary form is associated with an earlier diagnosis of about a decade. ('multiple endocrine neoplasia', 'Disease', (123, 151)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (132, 151)) ('familial paraganglioma', 'Disease', (255, 277)) ('tumor', 'Disease', (44, 49)) ('MEN', 'Species', '9606', (153, 156)) ('neurofibromatosis type 1', 'Gene', (202, 226)) ('hereditary syndromes', 'Disease', (97, 117)) ('tumor', 'Disease', 'MESH:D009369', (44, 49)) ('mutations', 'Var', (294, 303)) ('neoplasia', 'Phenotype', 'HP:0002664', (142, 151)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('hereditary syndromes', 'Disease', 'MESH:D061325', (97, 117)) ('Von Hippel Lindau disease', 'Disease', 'MESH:D006623', (175, 200)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (255, 277)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (202, 219)) ('neurofibromatosis type 1', 'Gene', '4763', (202, 226)) ('paraganglioma', 'Phenotype', 'HP:0002668', (264, 277)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (123, 151)) ('Von Hippel Lindau disease', 'Disease', (175, 200)) 72253 32455070 Moreover, uncontrolled secretion of catecholamines, which can also be affected by various stresses, may evoke symptoms like dry mouth, facial flushing, dilated pupils, constipation, headache, tremors, and generalized weakness. ('constipation', 'Disease', 'MESH:D003248', (168, 180)) ('stresses', 'Disease', (90, 98)) ('facial flushing', 'Disease', (135, 150)) ('dry mouth', 'Disease', (124, 133)) ('headache', 'Disease', 'MESH:D006261', (182, 190)) ('dilated pupils', 'Phenotype', 'HP:0011499', (152, 166)) ('uncontrolled', 'Var', (10, 22)) ('generalized weakness', 'Disease', (205, 225)) ('catecholamines', 'Chemical', 'MESH:D002395', (36, 50)) ('constipation', 'Disease', (168, 180)) ('dry mouth', 'Phenotype', 'HP:0000217', (124, 133)) ('generalized weakness', 'Phenotype', 'HP:0003324', (205, 225)) ('headache', 'Phenotype', 'HP:0002315', (182, 190)) ('dilated pupils', 'Disease', (152, 166)) ('flushing', 'Phenotype', 'HP:0031284', (142, 150)) ('evoke', 'Reg', (104, 109)) ('constipation', 'Phenotype', 'HP:0002019', (168, 180)) ('tremors', 'Disease', 'MESH:D014202', (192, 199)) ('headache', 'Disease', (182, 190)) ('tremors', 'Phenotype', 'HP:0001337', (192, 199)) ('stresses', 'Disease', 'MESH:D000079225', (90, 98)) ('facial flushing', 'Disease', 'MESH:D005483', (135, 150)) ('tremors', 'Disease', (192, 199)) ('dry mouth', 'Disease', 'MESH:D014987', (124, 133)) 72279 32455070 131I-MIBG for tumors that exhibit uptake on diagnostic scan) are viable treatment options for metastatic disease. ('131I-MIBG', 'Var', (0, 9)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) ('tumors', 'Disease', (14, 20)) ('tumors', 'Phenotype', 'HP:0002664', (14, 20)) ('tumors', 'Disease', 'MESH:D009369', (14, 20)) ('MIBG', 'Chemical', 'MESH:D019797', (5, 9)) ('metastatic disease', 'Disease', (94, 112)) 72297 32206762 Based on data from the 2011-2014 National Health and Nutrition Examination Survey, 46% of adults in the United States have hypertension when defined as >=130/80 mmHg or self-reported to be taking an anti-hypertensive agent, and 32% have hypertension using the older definition of >=140/90 mmHg. ('hypertension', 'Disease', 'MESH:D006973', (237, 249)) ('hypertension', 'Disease', (123, 135)) ('hypertensive', 'Disease', 'MESH:D006973', (204, 216)) ('hypertension', 'Phenotype', 'HP:0000822', (123, 135)) ('hypertension', 'Disease', (237, 249)) ('hypertension', 'Phenotype', 'HP:0000822', (237, 249)) ('hypertensive', 'Disease', (204, 216)) ('>=130/80', 'Var', (152, 160)) ('hypertension', 'Disease', 'MESH:D006973', (123, 135)) 72315 32206762 Patients with renal cancer had the highest rates of moderate hypertension (150-160/100-110 mmHg), whereas patients with gastric and ovarian cancers had the highest rates of severe (160-180/110-120 mmHg) or crisis-level (>=180/120 mmHg) hypertension, respectively. ('cancer', 'Phenotype', 'HP:0002664', (20, 26)) ('hypertension', 'Disease', 'MESH:D006973', (236, 248)) ('renal cancer', 'Disease', (14, 26)) ('hypertension', 'Disease', 'MESH:D006973', (61, 73)) ('gastric and ovarian cancers', 'Disease', 'MESH:C535648', (120, 147)) ('hypertension', 'Disease', (236, 248)) ('hypertension', 'Disease', (61, 73)) ('ovarian cancers', 'Phenotype', 'HP:0100615', (132, 147)) ('cancers', 'Phenotype', 'HP:0002664', (140, 147)) ('renal cancer', 'Phenotype', 'HP:0009726', (14, 26)) ('Patients', 'Species', '9606', (0, 8)) ('hypertension', 'Phenotype', 'HP:0000822', (61, 73)) ('160-180/110-120 mmHg', 'Var', (181, 201)) ('patients', 'Species', '9606', (106, 114)) ('renal cancer', 'Disease', 'MESH:D007680', (14, 26)) ('hypertension', 'Phenotype', 'HP:0000822', (236, 248)) ('cancer', 'Phenotype', 'HP:0002664', (140, 146)) ('crisis-level', 'MPA', (206, 218)) 72323 32206762 Hypertension associated with anti-VEGF therapy and tyrosine kinase inhibitors is well-described. ('VEGF', 'Gene', '7422', (34, 38)) ('tyrosine', 'Var', (51, 59)) ('Hypertension', 'Disease', (0, 12)) ('Hypertension', 'Phenotype', 'HP:0000822', (0, 12)) ('Hypertension', 'Disease', 'MESH:D006973', (0, 12)) ('VEGF', 'Gene', (34, 38)) 72327 32206762 Anti-VEGF therapy can also lead to fluid retention due to impaired natriuresis, endothelin-1-mediated vasoconstriction, as well as systemic thrombotic microangiopathy, similar to what is seen in preeclampsia. ('endothelin-1', 'Gene', (80, 92)) ('therapy', 'Var', (10, 17)) ('endothelin-1', 'Gene', '1906', (80, 92)) ('systemic', 'Disease', (131, 139)) ('fluid retention', 'MPA', (35, 50)) ('thrombotic microangiopathy', 'Disease', 'MESH:D057049', (140, 166)) ('fluid retention', 'Phenotype', 'HP:0000969', (35, 50)) ('VEGF', 'Gene', (5, 9)) ('thrombotic microangiopathy', 'Disease', (140, 166)) ('preeclampsia', 'Phenotype', 'HP:0100602', (195, 207)) ('VEGF', 'Gene', '7422', (5, 9)) ('impaired', 'NegReg', (58, 66)) 72328 32206762 A recent meta-analysis studied the risk of cardiovascular disease in tyrosine kinase inhibitors therapy versus standard chemotherapy, and included 71 randomized controlled trials comprising >29,000 patients. ('cardiovascular disease', 'Disease', 'MESH:D002318', (43, 65)) ('patients', 'Species', '9606', (198, 206)) ('tyrosine', 'Var', (69, 77)) ('cardiovascular disease', 'Disease', (43, 65)) ('cardiovascular disease', 'Phenotype', 'HP:0001626', (43, 65)) 72329 32206762 The relative risk of hypertension with tyrosine kinase inhibitor therapy was 3.78 (95% Confidence Interval (CI) 3.15-4.54). ('hypertension', 'Disease', (21, 33)) ('tyrosine', 'Var', (39, 47)) ('hypertension', 'Phenotype', 'HP:0000822', (21, 33)) ('hypertension', 'Disease', 'MESH:D006973', (21, 33)) 72330 32206762 Treatment with tyrosine kinase inhibitors was also associated with a higher risk of cardiac ischemia (relative risk 1.69, 95% CI 1.12-2.57; in subgroup analyses, highest with sorafenib and in renal cancer) and left ventricular systolic dysfunction (relative risk 2.53, 95% CI 1.79-3.57). ('renal cancer', 'Phenotype', 'HP:0009726', (192, 204)) ('left ventricular systolic dysfunction', 'Phenotype', 'HP:0025169', (210, 247)) ('left ventricular systolic dysfunction', 'Disease', 'MESH:D018487', (210, 247)) ('renal cancer', 'Disease', 'MESH:D007680', (192, 204)) ('cardiac ischemia', 'Phenotype', 'HP:0002637', (84, 100)) ('systolic dysfunction', 'Phenotype', 'HP:0006673', (227, 247)) ('cardiac ischemia', 'Disease', 'MESH:D006331', (84, 100)) ('left ventricular systolic dysfunction', 'Disease', (210, 247)) ('cancer', 'Phenotype', 'HP:0002664', (198, 204)) ('tyrosine kinase inhibitors', 'Var', (15, 41)) ('renal cancer', 'Disease', (192, 204)) ('sorafenib', 'Chemical', 'MESH:D000077157', (175, 184)) ('cardiac ischemia', 'Disease', (84, 100)) 72331 32206762 Another systematic review and meta-analysis of 77 studies of angiogenesis inhibitors determined that the odds ratio for hypertension was 5.28 (95% CI 4.53-6.15) with angiogenesis inhibitors compared to routine care (number need to harm 6), and the odds ratio for severe (>=160/100 mmHg) hypertension was 5.59 (95% CI 4.67-6.69) (number needed to harm 17). ('hypertension', 'Disease', 'MESH:D006973', (120, 132)) ('hypertension', 'Disease', (287, 299)) ('hypertension', 'Phenotype', 'HP:0000822', (287, 299)) ('angiogenesis', 'Var', (166, 178)) ('hypertension', 'Disease', (120, 132)) ('hypertension', 'Phenotype', 'HP:0000822', (120, 132)) ('hypertension', 'Disease', 'MESH:D006973', (287, 299)) 72333 32206762 There are pre-clinical and clinical data indicating that some alkylating agents cause vascular toxicity and nephrotoxicity, which can indirectly result in hypertension. ('result in', 'Reg', (145, 154)) ('nephrotoxicity', 'Disease', (108, 122)) ('hypertension', 'Disease', 'MESH:D006973', (155, 167)) ('nephrotoxicity', 'Disease', 'MESH:D007674', (108, 122)) ('toxicity', 'Disease', 'MESH:D064420', (114, 122)) ('toxicity', 'Disease', (114, 122)) ('alkylating', 'Var', (62, 72)) ('hypertension', 'Disease', (155, 167)) ('hypertension', 'Phenotype', 'HP:0000822', (155, 167)) ('toxicity', 'Disease', 'MESH:D064420', (95, 103)) ('toxicity', 'Disease', (95, 103)) 72335 32206762 Cyclophosphamide has been associated with multiple vascular complications such as veno-occlusive disease in the lung and liver after hematopoietic cell transplantation, thromboembolic disease, and myocardial ischemia. ('Cyclophosphamide', 'Chemical', 'MESH:D003520', (0, 16)) ('thromboembolic disease', 'Phenotype', 'HP:0001907', (169, 191)) ('myocardial ischemia', 'Disease', (197, 216)) ('thromboembolic disease', 'Disease', 'MESH:D013923', (169, 191)) ('myocardial ischemia', 'Phenotype', 'HP:0002637', (197, 216)) ('myocardial ischemia', 'Disease', 'MESH:D003324', (197, 216)) ('veno-occlusive disease', 'Disease', 'MESH:D011668', (82, 104)) ('occlusive disease', 'Phenotype', 'HP:0004950', (87, 104)) ('veno-occlusive disease', 'Disease', (82, 104)) ('thromboembolic disease', 'Disease', (169, 191)) ('Cyclophosphamide', 'Var', (0, 16)) ('associated with', 'Reg', (26, 41)) 72343 32206762 Correspondingly, bendamustine was reported to cause hypertensive emergency in 4 of 162 (2.4%) patients in a randomized controlled trial compared to chlorambucil for patients with previously untreated chronic lymphocytic leukemia. ('chlorambucil', 'Chemical', 'MESH:D002699', (148, 160)) ('patients', 'Species', '9606', (94, 102)) ('leukemia', 'Phenotype', 'HP:0001909', (220, 228)) ('hypertensive', 'Disease', 'MESH:D006973', (52, 64)) ('bendamustine', 'Var', (17, 29)) ('hypertensive', 'Disease', (52, 64)) ('chronic lymphocytic leukemia', 'Phenotype', 'HP:0005550', (200, 228)) ('lymphocytic leukemia', 'Disease', 'MESH:D007945', (208, 228)) ('lymphocytic leukemia', 'Disease', (208, 228)) ('patients', 'Species', '9606', (165, 173)) ('bendamustine', 'Chemical', 'MESH:D000069461', (17, 29)) ('hypertensive emergency', 'Phenotype', 'HP:0100735', (52, 74)) 72348 32206762 Similarly, cisplatin and other platinum-based compounds, which are alkyl-like agents, have also been associated with nephrotoxicity and hypertension. ('nephrotoxicity', 'Disease', (117, 131)) ('hypertension', 'Disease', 'MESH:D006973', (136, 148)) ('cisplatin', 'Chemical', 'MESH:D002945', (11, 20)) ('hypertension', 'Disease', (136, 148)) ('hypertension', 'Phenotype', 'HP:0000822', (136, 148)) ('associated', 'Reg', (101, 111)) ('cisplatin', 'Var', (11, 20)) ('platinum', 'Chemical', 'MESH:D010984', (31, 39)) ('nephrotoxicity', 'Disease', 'MESH:D007674', (117, 131)) 72398 32206762 Furthermore, hypertension increases the risk of cardiotoxicity due to chest radiotherapy and anthracycline. ('cardiotoxicity', 'Disease', 'MESH:D066126', (48, 62)) ('anthracycline', 'Chemical', 'MESH:D018943', (93, 106)) ('anthracycline', 'Var', (93, 106)) ('hypertension', 'Phenotype', 'HP:0000822', (13, 25)) ('cardiotoxicity', 'Disease', (48, 62)) ('hypertension increases', 'Disease', (13, 35)) ('hypertension increases', 'Disease', 'MESH:D006973', (13, 35)) 72478 31380450 A significant relationship between 123I-MIBG SUVmax and TBR was observed (correlation coefficient [r] =0.84, P < 0.0001). ('TBR', 'Chemical', '-', (56, 59)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (35, 44)) ('123I-MIBG', 'Var', (35, 44)) ('TBR', 'Gene', (56, 59)) 72480 31380450 123I-MIBG SUVmax strongly correlated with NMN (r=0.76, P < 0.01) and log NMN (r=0.74, P < 0.01). ('123I-MIBG', 'Var', (0, 9)) ('log NMN', 'MPA', (69, 76)) ('NMN', 'Chemical', 'MESH:D009647', (42, 45)) ('NMN', 'Chemical', 'MESH:D009647', (73, 76)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (0, 9)) ('NMN', 'MPA', (42, 45)) ('correlated', 'Reg', (26, 36)) ('SUVmax', 'Gene', (10, 16)) 72493 31380450 Patients This retrospective study included 15 patients [female, n=5; male, n=10; median age, 52.6+-11.8 (range, 24 to 73) years] with refractory pheochromocytoma (n=7) and paraganglioma (n=8) who underwent 131I-MIBG therapy. ('paraganglioma', 'Disease', (173, 186)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (146, 162)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (146, 162)) ('131I-MIBG', 'Var', (207, 216)) ('paraganglioma', 'Disease', 'MESH:D010235', (173, 186)) ('patients', 'Species', '9606', (47, 55)) ('Patients', 'Species', '9606', (0, 8)) ('131I-MIBG', 'Chemical', '-', (207, 216)) ('paraganglioma', 'Phenotype', 'HP:0002668', (173, 186)) ('pheochromocytoma', 'Disease', (146, 162)) 72512 31380450 A strong correlation was observed between 123I-MIBG SUVmax and TBR (Figure1). ('123I-MIBG', 'Var', (42, 51)) ('TBR', 'Gene', (63, 66)) ('TBR', 'Chemical', '-', (63, 66)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (42, 51)) 72518 31380450 NMN (mean, 15.0 +- 22.9 mg/day; range, 1.1-74 mg/day) significantly correlated with 123I-MIBG SUVmax but not with TBR (Figure 2). ('TBR', 'Chemical', '-', (114, 117)) ('NMN', 'Chemical', 'MESH:D009647', (0, 3)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (84, 93)) ('correlated', 'Interaction', (68, 78)) ('123I-MIBG', 'Var', (84, 93)) 72519 31380450 Log NMN (mean, 0.7+-0.6; range, 0.04-1.86) was strongly correlated with 123I-MIBG SUVmax and moderately with TBR. ('NMN', 'Chemical', 'MESH:D009647', (4, 7)) ('correlated', 'Interaction', (56, 66)) ('TBR', 'Chemical', '-', (109, 112)) ('123I-MIBG', 'Var', (72, 81)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (72, 81)) 72537 31380450 In addition, the information of false-negative 123I-MIBG in patients with refractory PPGL could suggest a more aggressive disease course and was frequently linked to the presence of succinate dehydrogenase subunit B (SDHB) gene mutation. ('123I-MIBG', 'Chemical', 'MESH:D019797', (47, 56)) ('mutation', 'Var', (228, 236)) ('succinate dehydrogenase subunit B', 'Gene', (182, 215)) ('patients', 'Species', '9606', (60, 68)) ('PPGL', 'Disease', (85, 89)) ('linked', 'Reg', (156, 162)) ('SDHB', 'Gene', '6390', (217, 221)) ('PPGL', 'Chemical', '-', (85, 89)) ('aggressive disease', 'Disease', 'MESH:D001523', (111, 129)) ('SDHB', 'Gene', (217, 221)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (182, 215)) ('aggressive disease', 'Disease', (111, 129)) 72548 31212687 Analyses of 28 PPGL tumor tissues using the dedicated PPGL panel revealed pathogenic or likely pathogenic variants in known PPGL susceptibility genes in 21 (75%) cases, including mutations in IDH2, ATRX and HRAS. ('variants', 'Var', (106, 114)) ('ATRX', 'Gene', '546', (198, 202)) ('HRAS', 'Gene', '3265', (207, 211)) ('IDH2', 'Gene', (192, 196)) ('pathogenic', 'Reg', (74, 84)) ('IDH2', 'Gene', '3418', (192, 196)) ('HRAS', 'Gene', (207, 211)) ('tumor', 'Disease', 'MESH:D009369', (20, 25)) ('tumor', 'Phenotype', 'HP:0002664', (20, 25)) ('mutations', 'Var', (179, 188)) ('pathogenic', 'CPA', (95, 105)) ('ATRX', 'Gene', (198, 202)) ('PPGL', 'Gene', (124, 128)) ('tumor', 'Disease', (20, 25)) 72549 31212687 These mutations suggest sporadic tumor development. ('tumor', 'Disease', 'MESH:D009369', (33, 38)) ('tumor', 'Phenotype', 'HP:0002664', (33, 38)) ('mutations', 'Var', (6, 15)) ('tumor', 'Disease', (33, 38)) 72552 31212687 PPGLs show the highest heritability of all cancers with almost 40% of patients carrying pathogenic germline mutations in one of the known PPGL susceptibility genes. ('patients', 'Species', '9606', (70, 78)) ('mutations', 'Var', (108, 117)) ('cancers', 'Phenotype', 'HP:0002664', (43, 50)) ('cancers', 'Disease', (43, 50)) ('cancers', 'Disease', 'MESH:D009369', (43, 50)) ('cancer', 'Phenotype', 'HP:0002664', (43, 49)) ('PPGL', 'Gene', (138, 142)) 72555 31212687 The majority of hereditary PPGLs are caused by mutations affecting NF1, RET, VHL, SDHA, SDHB, SDHC and SDHD. ('NF1', 'Gene', (67, 70)) ('SDHD', 'Gene', '6392', (103, 107)) ('NF1', 'Gene', '4763', (67, 70)) ('SDHB', 'Gene', '6390', (88, 92)) ('caused by', 'Reg', (37, 46)) ('SDHB', 'Gene', (88, 92)) ('mutations', 'Var', (47, 56)) ('RET', 'Gene', '5979', (72, 75)) ('SDHA', 'Gene', '6389', (82, 86)) ('SDHC', 'Gene', (94, 98)) ('hereditary PPGLs', 'Disease', (16, 32)) ('VHL', 'Disease', 'MESH:D006623', (77, 80)) ('SDHC', 'Gene', '6391', (94, 98)) ('RET', 'Gene', (72, 75)) ('SDHA', 'Gene', (82, 86)) ('VHL', 'Disease', (77, 80)) ('SDHD', 'Gene', (103, 107)) 72561 31212687 Furthermore, somatic mutations in known cancer associated genes have been identified as driver-alterations in a subset of PPGLs due to recent efforts in genome sequencing projects, such as somatic activating hot-spot cases, and somatic hot-spot mutations in IDH1 or IDH2, recognized as drivers of tumorigenesis in PPGL, were identified. ('IDH1', 'Gene', '3417', (258, 262)) ('IDH2', 'Gene', (266, 270)) ('cancer', 'Disease', 'MESH:D009369', (40, 46)) ('tumor', 'Disease', 'MESH:D009369', (297, 302)) ('IDH2', 'Gene', '3418', (266, 270)) ('cancer', 'Disease', (40, 46)) ('tumor', 'Phenotype', 'HP:0002664', (297, 302)) ('cancer', 'Phenotype', 'HP:0002664', (40, 46)) ('tumor', 'Disease', (297, 302)) ('IDH1', 'Gene', (258, 262)) ('mutations', 'Var', (21, 30)) 72575 31212687 One family was known to carry a pathogenic BRCA2 germline mutation causing hereditary breast and ovarian cancer. ('hereditary breast and ovarian cancer', 'Disease', 'MESH:D061325', (75, 111)) ('causing', 'Reg', (67, 74)) ('germline', 'Var', (49, 57)) ('BRCA2', 'Gene', (43, 48)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (97, 111)) ('BRCA2', 'Gene', '675', (43, 48)) ('cancer', 'Phenotype', 'HP:0002664', (105, 111)) 72579 31212687 The majority (14) of these patients had germline mutations in an SDHx gene, which is associated with an aberrant succinate to fumarate ratio (S:F ratio) in the tumor tissue. ('associated with', 'Reg', (85, 100)) ('germline mutations', 'Var', (40, 58)) ('fumarate', 'Chemical', 'MESH:D005650', (126, 134)) ('tumor', 'Disease', 'MESH:D009369', (160, 165)) ('patients', 'Species', '9606', (27, 35)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('SDHx', 'Chemical', '-', (65, 69)) ('SDHx', 'Gene', (65, 69)) ('succinate', 'Chemical', 'MESH:D019802', (113, 122)) ('tumor', 'Disease', (160, 165)) 72580 31212687 In eight cases with pathogenic germline SDHx variants, succinate and fumarate concentrations in the tumors were analyzed and aberrant S:F ratios were evident in six of these cases (Table 1). ('SDHx', 'Chemical', '-', (40, 44)) ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('SDHx', 'Gene', (40, 44)) ('succinate', 'Chemical', 'MESH:D019802', (55, 64)) ('variants', 'Var', (45, 53)) ('tumors', 'Disease', 'MESH:D009369', (100, 106)) ('tumors', 'Disease', (100, 106)) ('fumarate', 'Chemical', 'MESH:D005650', (69, 77)) ('tumors', 'Phenotype', 'HP:0002664', (100, 106)) 72581 31212687 In one patient (ID3) with a pathogenic SDHB variant, we found an additional pathogenic germline variant in CHEK2 (c.1100delC, p.(Thr367fs)) that is known to be associated with hereditary breast and ovarian cancer (Table 1). ('CHEK2', 'Gene', '11200', (107, 112)) ('cancer', 'Phenotype', 'HP:0002664', (206, 212)) ('SDHB', 'Gene', '6390', (39, 43)) ('variant', 'Var', (44, 51)) ('patient', 'Species', '9606', (7, 14)) ('CHEK2', 'Gene', (107, 112)) ('ID3', 'Gene', (16, 19)) ('hereditary breast and ovarian cancer', 'Disease', 'MESH:D061325', (176, 212)) ('p.(Thr367fs)', 'Mutation', 'rs555607708', (126, 138)) ('c.1100delC', 'Var', (114, 124)) ('c.1100delC', 'Mutation', 'rs555607708', (114, 124)) ('SDHB', 'Gene', (39, 43)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (198, 212)) ('ID3', 'Gene', '3399', (16, 19)) ('associated', 'Reg', (160, 170)) 72582 31212687 In this case, an aberrant S:F ratio was not observed in the tumor although a pathogenic SDHB variant was identified, which might be explained by reported inconsistencies between SDHx mutations and aberrant S:F ratios in head and neck paragangliomas (HNPs). ('neck paragangliomas', 'Disease', (229, 248)) ('paraganglioma', 'Phenotype', 'HP:0002668', (234, 247)) ('mutations', 'Var', (183, 192)) ('SDHB', 'Gene', '6390', (88, 92)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('SDHB', 'Gene', (88, 92)) ('paragangliomas', 'Phenotype', 'HP:0002668', (234, 248)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (220, 248)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (229, 248)) ('SDHx', 'Chemical', '-', (178, 182)) ('tumor', 'Disease', (60, 65)) ('variant', 'Var', (93, 100)) 72584 31212687 Additionally, we included further common known tumor genes such as TP53, PTEN, FGFR1, and BRAF that have been described to be mutated in PPGL tumors and might be secondary mutations. ('BRAF', 'Gene', (90, 94)) ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('PPGL', 'Gene', (137, 141)) ('FGFR1', 'Gene', (79, 84)) ('tumors', 'Phenotype', 'HP:0002664', (142, 148)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('mutated', 'Var', (126, 133)) ('tumors', 'Disease', (142, 148)) ('TP53', 'Gene', (67, 71)) ('PTEN', 'Gene', (73, 77)) ('tumor', 'Disease', (142, 147)) ('tumors', 'Disease', 'MESH:D009369', (142, 148)) ('FGFR1', 'Gene', '2260', (79, 84)) ('tumor', 'Disease', 'MESH:D009369', (142, 147)) ('tumor', 'Disease', (47, 52)) ('PTEN', 'Gene', '5728', (73, 77)) ('tumor', 'Disease', 'MESH:D009369', (47, 52)) ('TP53', 'Gene', '7157', (67, 71)) ('BRAF', 'Gene', '673', (90, 94)) 72590 31212687 Two of the cases (ID42 and ID43) had pathogenic germline variants in known PPGL susceptibility genes (SDHB, SDHC), whereas in eight cases, no pathogenic variants had been identified during routine germline testing (Table 2). ('pathogenic', 'Reg', (37, 47)) ('SDHB', 'Gene', '6390', (102, 106)) ('SDHC', 'Gene', (108, 112)) ('PPGL', 'Gene', (75, 79)) ('SDHB', 'Gene', (102, 106)) ('SDHC', 'Gene', '6391', (108, 112)) ('variants', 'Var', (57, 65)) 72591 31212687 Sequencing of tumor tissue from the aforementioned ten patients led to the identification of pathogenic variants in known PPGL susceptibility genes in nine cases (Table 2). ('tumor', 'Disease', (14, 19)) ('pathogenic', 'Reg', (93, 103)) ('variants', 'Var', (104, 112)) ('PPGL', 'Gene', (122, 126)) ('tumor', 'Disease', 'MESH:D009369', (14, 19)) ('patients', 'Species', '9606', (55, 63)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) 72592 31212687 In the two cases with pathogenic germline mutations, we could confirm both mutations in tumor tissue. ('tumor', 'Disease', 'MESH:D009369', (88, 93)) ('confirm', 'Reg', (62, 69)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('tumor', 'Disease', (88, 93)) ('germline', 'Var', (33, 41)) 72593 31212687 In one of these cases (ID42), we observed increased allele frequency (85.4%) of the pathogenic SDHB variant, suggesting a loss of heterozygosity in this tumor (Table 2). ('increased', 'PosReg', (42, 51)) ('tumor', 'Disease', 'MESH:D009369', (153, 158)) ('SDHB', 'Gene', '6390', (95, 99)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('tumor', 'Disease', (153, 158)) ('allele frequency', 'MPA', (52, 68)) ('SDHB', 'Gene', (95, 99)) ('variant', 'Var', (100, 107)) 72594 31212687 In the other case (ID43) with a pathogenic germline variant in SDHC, we found an additional pathogenic somatic variant in ATRX (Table 2). ('variant', 'Var', (111, 118)) ('ATRX', 'Gene', (122, 126)) ('pathogenic', 'Reg', (32, 42)) ('ATRX', 'Gene', '546', (122, 126)) ('pathogenic', 'Reg', (92, 102)) ('SDHC', 'Gene', (63, 67)) ('germline variant', 'Var', (43, 59)) ('SDHC', 'Gene', '6391', (63, 67)) 72595 31212687 In seven out of eight cases with inconspicuous germline analysis results, we identified pathogenic somatic variants in tumor tissue of the patients (Table 2). ('tumor', 'Disease', (119, 124)) ('patients', 'Species', '9606', (139, 147)) ('pathogenic', 'Reg', (88, 98)) ('variants', 'Var', (107, 115)) ('tumor', 'Disease', 'MESH:D009369', (119, 124)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) 72596 31212687 Four of these cases (ID69, ID66, ID67 and ID24) had a somatic variant in a known PPGL susceptibility gene (SDHB, SDHD, and 2x VHL) that was not present in the matched blood sample, indicating a sporadic tumor development in these cases. ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('tumor', 'Disease', (203, 208)) ('SDHB', 'Gene', (107, 111)) ('VHL', 'Disease', (126, 129)) ('SDHD', 'Gene', (113, 117)) ('VHL', 'Disease', 'MESH:D006623', (126, 129)) ('SDHD', 'Gene', '6392', (113, 117)) ('ID67', 'Var', (33, 37)) ('tumor', 'Disease', 'MESH:D009369', (203, 208)) ('variant', 'Var', (62, 69)) ('ID66', 'Var', (27, 31)) ('SDHB', 'Gene', '6390', (107, 111)) 72597 31212687 The tumor ID69 with a pathogenic SDHD variant additionally harbored a somatic missense variant of unknown significance in FH (p.(Ala198Val)) with a low allele frequency (7.3%), indicating a potential secondary event. ('tumor', 'Disease', (4, 9)) ('SDHD', 'Gene', '6392', (33, 37)) ('SDHD', 'Gene', (33, 37)) ('pathogenic', 'Reg', (22, 32)) ('p.(Ala198Val)', 'SUBSTITUTION', 'None', (126, 139)) ('p.(Ala198Val', 'Var', (126, 138)) ('tumor', 'Disease', 'MESH:D009369', (4, 9)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) ('variant', 'Var', (38, 45)) 72598 31212687 Pathogenic hot-spot variants in HRAS were identified in two cases (ID1 and ID68). ('variants', 'Var', (20, 28)) ('Pathogenic', 'Reg', (0, 10)) ('HRAS', 'Gene', '3265', (32, 36)) ('ID1', 'Gene', (67, 70)) ('HRAS', 'Gene', (32, 36)) ('hot-spot', 'PosReg', (11, 19)) ('ID1', 'Gene', '3397', (67, 70)) 72599 31212687 In the seventh tumor (ID72), we found pathogenic variants in TP53 and in ATRX. ('tumor', 'Disease', 'MESH:D009369', (15, 20)) ('variants', 'Var', (49, 57)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('ATRX', 'Gene', (73, 77)) ('tumor', 'Disease', (15, 20)) ('pathogenic', 'Reg', (38, 48)) ('TP53', 'Gene', '7157', (61, 65)) ('ATRX', 'Gene', '546', (73, 77)) ('TP53', 'Gene', (61, 65)) 72601 31212687 All cases with pathogenic variants in SDHx also had aberrant S:F ratios in tumor tissue, whereas cases with pathogenic variants in non-SDHx genes did not show elevated S:F ratios, demonstrating correlation between genomic and metabolomic analyses (Table 2). ('SDHx', 'Chemical', '-', (135, 139)) ('pathogenic', 'Reg', (15, 25)) ('tumor', 'Disease', 'MESH:D009369', (75, 80)) ('SDHx', 'Gene', (38, 42)) ('SDHx', 'Chemical', '-', (38, 42)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('S:F ratios', 'MPA', (61, 71)) ('tumor', 'Disease', (75, 80)) ('variants', 'Var', (26, 34)) 72602 31212687 Altogether, combined tumor and germline testing revealed causative mutations in 90% of the cases (9/10), confirming a sporadic tumor in seven cases. ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('tumor', 'Disease', (21, 26)) ('tumor', 'Disease', (127, 132)) ('mutations', 'Var', (67, 76)) ('tumor', 'Disease', 'MESH:D009369', (21, 26)) ('tumor', 'Disease', 'MESH:D009369', (127, 132)) ('tumor', 'Phenotype', 'HP:0002664', (21, 26)) 72605 31212687 In twelve of these 18 tumors, pathogenic variants in a known PPGL susceptibility gene were identified by PPGL custom panel sequencing (Table 2). ('variants', 'Var', (41, 49)) ('tumors', 'Disease', 'MESH:D009369', (22, 28)) ('tumor', 'Phenotype', 'HP:0002664', (22, 27)) ('PPGL', 'Gene', (61, 65)) ('tumors', 'Phenotype', 'HP:0002664', (22, 28)) ('tumors', 'Disease', (22, 28)) 72606 31212687 In two cases (ID51, ID71), we found pathogenic variants in SDHB. ('pathogenic', 'Reg', (36, 46)) ('variants', 'Var', (47, 55)) ('SDHB', 'Gene', '6390', (59, 63)) ('SDHB', 'Gene', (59, 63)) 72607 31212687 The pathogenic nonsense mutation p.(Tyr61*) in SDHB in case ID51 was confirmed to be a somatic variant. ('p.(Tyr61*)', 'SUBSTITUTION', 'None', (33, 43)) ('SDHB', 'Gene', '6390', (47, 51)) ('SDHB', 'Gene', (47, 51)) ('pathogenic', 'Reg', (4, 14)) ('p.(Tyr61*', 'Var', (33, 42)) 72608 31212687 Furthermore, metabolome analysis of tumor tissue of case ID51 showed an elevated S:F ratio of 5178.2, which is concurrent with the pathogenic SDHB variant. ('elevated', 'PosReg', (72, 80)) ('SDHB', 'Gene', (142, 146)) ('tumor', 'Disease', 'MESH:D009369', (36, 41)) ('S:F ratio', 'MPA', (81, 90)) ('variant', 'Var', (147, 154)) ('tumor', 'Phenotype', 'HP:0002664', (36, 41)) ('SDHB', 'Gene', '6390', (142, 146)) ('tumor', 'Disease', (36, 41)) 72609 31212687 The SDHB missense variant p.(Arg242Cys) in case ID71 showed a low allele frequency of 16.4%, indicating that this variant is likely somatic as well. ('SDHB', 'Gene', '6390', (4, 8)) ('SDHB', 'Gene', (4, 8)) ('p.(Arg242Cys', 'Var', (26, 38)) ('p.(Arg242Cys)', 'SUBSTITUTION', 'None', (26, 39)) 72610 31212687 However, in this case no elevated S:F ratio was detected in tumor tissue, which is likely attributable to known deviations between pathogenic SDHx variants and S:F ratio in head and neck paragangliomas. ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (173, 201)) ('variants', 'Var', (147, 155)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('SDHx', 'Gene', (142, 146)) ('head and', 'Disease', (173, 181)) ('neck paragangliomas', 'Disease', (182, 201)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('SDHx', 'Chemical', '-', (142, 146)) ('paraganglioma', 'Phenotype', 'HP:0002668', (187, 200)) ('paragangliomas', 'Phenotype', 'HP:0002668', (187, 201)) ('tumor', 'Disease', (60, 65)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (182, 201)) 72611 31212687 Pathogenic variants in FH were identified in tumor tissue of two cases (ID41 and ID82) and showed elevated fumarate to malate ratios, demonstrating correlation between genomic and metabolomic analyses. ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('fumarate to malate ratios', 'MPA', (107, 132)) ('variants', 'Var', (11, 19)) ('Pathogenic', 'Reg', (0, 10)) ('tumor', 'Disease', (45, 50)) ('elevated', 'PosReg', (98, 106)) ('malate', 'Chemical', 'MESH:C030298', (119, 125)) ('fumarate', 'Chemical', 'MESH:D005650', (107, 115)) ('tumor', 'Disease', 'MESH:D009369', (45, 50)) 72612 31212687 Both pathogenic FH variants were also identified in the germline of the patients by targeted analysis (Table 2). ('pathogenic', 'Reg', (5, 15)) ('variants', 'Var', (19, 27)) ('patients', 'Species', '9606', (72, 80)) 72613 31212687 In four cases, we identified pathogenic variants in NF1 (ID73, ID79, ID91 and ID92). ('NF1', 'Gene', (52, 55)) ('NF1', 'Gene', '4763', (52, 55)) ('pathogenic', 'Reg', (29, 39)) ('ID73', 'Var', (57, 61)) ('ID92', 'Var', (78, 82)) ('ID91', 'Var', (69, 73)) ('ID79', 'Var', (63, 67)) 72614 31212687 One of these cases (ID92) had two different nonsense mutations in NF1 (p.(Arg440*) and p.(Arg2517*)) at allele frequencies of 15.9% and 33.2%, respectively, which could also indicate somatic origin. ('p.(Arg440*)', 'SUBSTITUTION', 'None', (71, 82)) ('p.(Arg440*', 'Var', (71, 81)) ('p.(Arg2517*', 'Var', (87, 98)) ('p.(Arg2517*)', 'SUBSTITUTION', 'None', (87, 99)) ('NF1', 'Gene', (66, 69)) ('NF1', 'Gene', '4763', (66, 69)) 72615 31212687 Case ID73 had a NF1 nonsense variant (p.(Gln514*) at an allele frequency of 62.1%, case ID79 showed a pathogenic frameshift variant (p.(Ser2601fs)) in NF1 with an allele frequency of 83.2% and ID91 had a pathogenic splice variant in NF1 with an allele frequency of 39.9%. ('NF1', 'Gene', (16, 19)) ('p.(Gln514*', 'Var', (38, 48)) ('p.(Ser2601fs', 'Var', (133, 145)) ('p.(Ser2601fs)', 'Mutation', 'p.S2601fsX)', (133, 146)) ('pathogenic', 'Reg', (204, 214)) ('NF1', 'Gene', '4763', (16, 19)) ('p.(Gln514*)', 'SUBSTITUTION', 'None', (38, 49)) ('NF1', 'Gene', (151, 154)) ('NF1', 'Gene', (233, 236)) ('NF1', 'Gene', '4763', (151, 154)) ('pathogenic frameshift', 'Reg', (102, 123)) ('NF1', 'Gene', '4763', (233, 236)) 72616 31212687 A pathogenic missense variant in VHL (p.(Arg167Gln) was identified in ID78 at an allele frequency of 49.6%. ('VHL', 'Disease', 'MESH:D006623', (33, 36)) ('pathogenic', 'Reg', (2, 12)) ('p.(Arg167Gln)', 'SUBSTITUTION', 'None', (38, 51)) ('p.(Arg167Gln', 'Var', (38, 50)) ('VHL', 'Disease', (33, 36)) 72617 31212687 No blood samples were available for analysis in these five cases and thus, presence of the respective NF1 or VHL variants in the germline of these patients could not be determined. ('VHL', 'Disease', (109, 112)) ('VHL', 'Disease', 'MESH:D006623', (109, 112)) ('NF1', 'Gene', (102, 105)) ('NF1', 'Gene', '4763', (102, 105)) ('patients', 'Species', '9606', (147, 155)) ('variants', 'Var', (113, 121)) 72618 31212687 One tumor (ID75) harbored a somatic IDH2 hot-spot mutation, in line with elevated D-2-hydroxyglutarate. ('tumor', 'Disease', (4, 9)) ('IDH2', 'Gene', (36, 40)) ('IDH2', 'Gene', '3418', (36, 40)) ('hot-spot', 'PosReg', (41, 49)) ('tumor', 'Disease', 'MESH:D009369', (4, 9)) ('D-2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (82, 102)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) ('mutation', 'Var', (50, 58)) 72620 31212687 In one tumor (ID80) we identified a nonsense mutation in ATRX (p.Glu481*), however, only at a frequency of 5.4%. ('tumor', 'Disease', (7, 12)) ('ATRX', 'Gene', '546', (57, 61)) ('p.Glu481*', 'Var', (63, 72)) ('p.Glu481*', 'Mutation', 'p.E481*', (63, 72)) ('tumor', 'Disease', 'MESH:D009369', (7, 12)) ('ATRX', 'Gene', (57, 61)) ('tumor', 'Phenotype', 'HP:0002664', (7, 12)) 72622 31212687 Taken together, by sequencing analyses of altogether 28 tumor tissues using our PPGL panel, we identified 24 (likely) pathogenic variants in 21 tumor samples (Table 2, Figure 2). ('tumor', 'Disease', (144, 149)) ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('pathogenic', 'Reg', (118, 128)) ('tumor', 'Disease', (56, 61)) ('tumor', 'Disease', 'MESH:D009369', (144, 149)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) ('tumor', 'Disease', 'MESH:D009369', (56, 61)) ('variants', 'Var', (129, 137)) 72624 31212687 For example, the majority of variants identified by germline testing involved SDHx genes, while SDHx mutations only account for about 30% of mutations found by tumor testing (14/19 germline variants in the clinical cohort compared to 7/24 variants in tumor tissues). ('tumor', 'Disease', (251, 256)) ('SDHx', 'Chemical', '-', (78, 82)) ('SDHx genes', 'Gene', (78, 88)) ('tumor', 'Phenotype', 'HP:0002664', (251, 256)) ('tumor', 'Disease', 'MESH:D009369', (160, 165)) ('involved', 'Reg', (69, 77)) ('variants', 'Var', (29, 37)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('SDHx', 'Chemical', '-', (96, 100)) ('tumor', 'Disease', 'MESH:D009369', (251, 256)) ('tumor', 'Disease', (160, 165)) ('to 7', 'Species', '1214577', (231, 235)) 72625 31212687 In contrast, variants in IDH2, TP53, ATRX, HRAS, and VHL were exclusively found by tumor sequencing, and variants in NF1 were more frequently found in tumor tissues (5/24 variants in 21 tumor cases) compared to germline testing (1/19 variants identified in our clinical cohort of 65 patients (Figure 2b). ('VHL', 'Disease', (53, 56)) ('found', 'Reg', (74, 79)) ('tumor', 'Disease', (83, 88)) ('TP53', 'Gene', (31, 35)) ('tumor', 'Disease', (186, 191)) ('variants', 'Var', (105, 113)) ('tumor', 'Disease', 'MESH:D009369', (83, 88)) ('ATRX', 'Gene', (37, 41)) ('NF1', 'Gene', '4763', (117, 120)) ('tumor', 'Disease', 'MESH:D009369', (186, 191)) ('tumor', 'Phenotype', 'HP:0002664', (151, 156)) ('ATRX', 'Gene', '546', (37, 41)) ('patients', 'Species', '9606', (283, 291)) ('HRAS', 'Gene', '3265', (43, 47)) ('found', 'Reg', (142, 147)) ('NF1', 'Gene', (117, 120)) ('HRAS', 'Gene', (43, 47)) ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('VHL', 'Disease', 'MESH:D006623', (53, 56)) ('tumor', 'Phenotype', 'HP:0002664', (186, 191)) ('TP53', 'Gene', '7157', (31, 35)) ('IDH2', 'Gene', (25, 29)) ('IDH2', 'Gene', '3418', (25, 29)) ('variants', 'Var', (13, 21)) ('tumor', 'Disease', (151, 156)) ('tumor', 'Disease', 'MESH:D009369', (151, 156)) ('variants', 'Var', (171, 179)) 72626 31212687 In seven of 28 analyzed PPGL tumor samples, we found no underlying pathogenic variants in any of the 20 known PPGL susceptibility genes. ('tumor', 'Disease', 'MESH:D009369', (29, 34)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('tumor', 'Disease', (29, 34)) ('PPGL', 'Gene', (110, 114)) ('PPGL', 'Gene', (24, 28)) ('variants', 'Var', (78, 86)) 72627 31212687 One tumor (ID61) had a missense variant in ATRX (p.(Asn53His)) at an allele frequency of 25%. ('tumor', 'Disease', (4, 9)) ('missense variant', 'Var', (23, 39)) ('ATRX', 'Gene', '546', (43, 47)) ('p.(Asn53His', 'Var', (49, 60)) ('p.(Asn53His)', 'SUBSTITUTION', 'None', (49, 61)) ('tumor', 'Disease', 'MESH:D009369', (4, 9)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) ('ATRX', 'Gene', (43, 47)) 72628 31212687 In the tumor of patient ID90 we identified a missense variant in the candidate gene TET1 (p.(Val128Leu)) with an allele frequency of 26.1%. ('p.(Val128Leu', 'Var', (90, 102)) ('tumor', 'Disease', (7, 12)) ('missense variant', 'Var', (45, 61)) ('p.(Val128Leu)', 'SUBSTITUTION', 'None', (90, 103)) ('tumor', 'Phenotype', 'HP:0002664', (7, 12)) ('TET1', 'Gene', (84, 88)) ('tumor', 'Disease', 'MESH:D009369', (7, 12)) ('patient', 'Species', '9606', (16, 23)) ('TET1', 'Gene', '80312', (84, 88)) 72630 31212687 A blood sample with a confirmed deletion of one NF1 allele served as positive control for CNV detection and the NF1 loss was reliably detected by the applied algorithms (Figure 3F). ('deletion', 'Var', (32, 40)) ('NF1', 'Gene', '4763', (48, 51)) ('NF1', 'Gene', '4763', (112, 115)) ('NF1', 'Gene', (112, 115)) ('loss', 'NegReg', (116, 120)) ('NF1', 'Gene', (48, 51)) 72631 31212687 Within our cohort of 28 PPGL tumors that were analyzed by custom panel sequencing, several pathogenic variants were found at high allele frequencies indicating a loss of heterozygosity (Table 2). ('variants', 'Var', (102, 110)) ('loss', 'NegReg', (162, 166)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('tumors', 'Phenotype', 'HP:0002664', (29, 35)) ('tumors', 'Disease', 'MESH:D009369', (29, 35)) ('tumors', 'Disease', (29, 35)) 72632 31212687 In two cases with pathogenic SDHB variants (ID42: frequency of 85.4% and ID51: frequency of 80%) loss of one SDHB allele was identified by CNV detection analysis (Figure 3a,b). ('SDHB', 'Gene', '6390', (29, 33)) ('loss', 'NegReg', (97, 101)) ('variants', 'Var', (34, 42)) ('SDHB', 'Gene', '6390', (109, 113)) ('SDHB', 'Gene', (109, 113)) ('SDHB', 'Gene', (29, 33)) 72633 31212687 Two tumors with inconspicuous sequencing results (ID76 and ID88) had high frequencies of CNVs compared to the other samples (Supplementary Table S3, Supplementary Figure S1), including heterozygous loss of TP53 in one tumor (ID76) and of NF1 in the other tumor (ID88) (Figure 3D,E). ('tumor', 'Disease', (4, 9)) ('TP53', 'Gene', '7157', (206, 210)) ('TP53', 'Gene', (206, 210)) ('NF1', 'Gene', '4763', (238, 241)) ('tumor', 'Disease', 'MESH:D009369', (255, 260)) ('tumor', 'Disease', (255, 260)) ('tumor', 'Phenotype', 'HP:0002664', (255, 260)) ('tumors', 'Disease', (4, 10)) ('tumors', 'Disease', 'MESH:D009369', (4, 10)) ('tumor', 'Disease', 'MESH:D009369', (218, 223)) ('tumors', 'Phenotype', 'HP:0002664', (4, 10)) ('tumor', 'Phenotype', 'HP:0002664', (218, 223)) ('tumor', 'Disease', 'MESH:D009369', (4, 9)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) ('heterozygous loss', 'Var', (185, 202)) ('tumor', 'Disease', (218, 223)) ('NF1', 'Gene', (238, 241)) 72634 31212687 Sequencing of PPGL tumor tissue with the custom panel revealed rare variants in candidate genes in nine cases (Table 3). ('variants', 'Var', (68, 76)) ('tumor', 'Disease', 'MESH:D009369', (19, 24)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('tumor', 'Disease', (19, 24)) ('PPGL', 'Gene', (14, 18)) 72635 31212687 Two of these variants were found at low allele frequencies (ID61: ATRX p.(Asn53His) 25.2% and ID88: TET1 p.(Val128Leu) 26.1%) in tumors that otherwise did not harbor a clear pathogenic or likely pathogenic mutation in a known PPGL susceptibility gene (see Section Section 2.3). ('tumors', 'Disease', (129, 135)) ('tumors', 'Disease', 'MESH:D009369', (129, 135)) ('p.(Asn53His)', 'SUBSTITUTION', 'None', (71, 83)) ('tumors', 'Phenotype', 'HP:0002664', (129, 135)) ('p.(Val128Leu)', 'SUBSTITUTION', 'None', (105, 118)) ('p.(Val128Leu', 'Var', (105, 117)) ('p.(Asn53His', 'Var', (71, 82)) ('ATRX', 'Gene', (66, 70)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('PPGL', 'Gene', (226, 230)) ('ATRX', 'Gene', '546', (66, 70)) 72636 31212687 The other seven variants were identified in cases that also carried a pathogenic variant in a PPGL susceptibility gene and occurred at allele frequencies between 46% and 52.3% with the exception of FH p.(Ala198Val) with a frequency of 7.3% (Table 3). ('PPGL susceptibility', 'Gene', (94, 113)) ('pathogenic', 'Reg', (70, 80)) ('variant', 'Var', (81, 88)) ('p.(Ala198Val)', 'SUBSTITUTION', 'None', (201, 214)) ('p.(Ala198Val', 'Var', (201, 213)) 72637 31212687 All seven variants were predicted to be pathogenic by several in silico prediction programs (ID41: OGDHL p.(Tyr447Cys), ID68: GPT p.(Glu210Cys), ID69: FH p.(Ala198Val), ID71: PDHB p.(Val174Met), ID78: FGFR1 p.(Pro702Tyr), ID79: HIST1H3B p.(Pro44Gln) and ID82: PCK2 p.(Arg155Cys), Table 3). ('PDHB', 'Gene', (175, 179)) ('p.(Glu210Cys', 'Var', (130, 142)) ('p.(Tyr447Cys', 'Var', (105, 117)) ('p.(Pro44Gln)', 'SUBSTITUTION', 'None', (237, 249)) ('p.(Glu210Cys)', 'SUBSTITUTION', 'None', (130, 143)) ('PDHB', 'Gene', '5162', (175, 179)) ('p.(Pro702Tyr)', 'SUBSTITUTION', 'None', (207, 220)) ('GPT', 'Gene', (126, 129)) ('p.(Pro702Tyr', 'Var', (207, 219)) ('p.(Ala198Val', 'Var', (154, 166)) ('HIST1H3B', 'Gene', (228, 236)) ('p.(Pro44Gln', 'Var', (237, 248)) ('p.(Val174Met)', 'SUBSTITUTION', 'None', (180, 193)) ('p.(Val174Met', 'Var', (180, 192)) ('GPT', 'Gene', '2875', (126, 129)) ('HIST1H3B', 'Gene', '8358', (228, 236)) ('OGDHL', 'Gene', (99, 104)) ('OGDHL', 'Gene', '55753', (99, 104)) ('p.(Tyr447Cys)', 'SUBSTITUTION', 'None', (105, 118)) ('p.(Arg155Cys)', 'SUBSTITUTION', 'None', (265, 278)) ('p.(Ala198Val)', 'SUBSTITUTION', 'None', (154, 167)) ('pathogenic', 'Reg', (40, 50)) ('p.(Arg155Cys', 'Var', (265, 277)) 72638 31212687 Five of these variants were listed in dbSNP and two variants were identified as somatic variants in lung cancer (FGFR1 p.(Pro702Tyr)) or in a colon carcinoma ((GPT p.(Glu210Cys), COSMIC database; (Table 3)). ('p.(Glu210Cys)', 'SUBSTITUTION', 'None', (164, 177)) ('carcinoma', 'Phenotype', 'HP:0030731', (148, 157)) ('FGFR1', 'Gene', (113, 118)) ('p.(Glu210Cys', 'Var', (164, 176)) ('cancer', 'Disease', (105, 111)) ('cancer', 'Disease', 'MESH:D009369', (105, 111)) ('lung cancer', 'Phenotype', 'HP:0100526', (100, 111)) ('p.(Pro702Tyr', 'Var', (119, 131)) ('cancer', 'Phenotype', 'HP:0002664', (105, 111)) ('GPT', 'Gene', '2875', (160, 163)) ('p.(Pro702Tyr)', 'SUBSTITUTION', 'None', (119, 132)) ('GPT', 'Gene', (160, 163)) 72641 31212687 This information is crucial for stratifying the risk of synchronous or metachronous tumor development in PPGL patients both regarding additional PPGLs and regarding other tumor types that, respectively, are associated with some of the PPGL susceptibility genes such as gastrointestinal stromal tumors (GIST ) with SDHx mutations. ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('PPGL', 'Gene', (105, 109)) ('tumor', 'Disease', 'MESH:D009369', (171, 176)) ('synchronous', 'Disease', 'MESH:D009378', (56, 67)) ('mutations', 'Var', (319, 328)) ('tumor', 'Phenotype', 'HP:0002664', (294, 299)) ('SDHx', 'Gene', (314, 318)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (269, 300)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (269, 300)) ('tumor', 'Phenotype', 'HP:0002664', (171, 176)) ('synchronous', 'Disease', (56, 67)) ('SDHx', 'Chemical', '-', (314, 318)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (269, 299)) ('tumor', 'Disease', (294, 299)) ('gastrointestinal stromal tumors', 'Disease', (269, 300)) ('PPGL', 'Gene', (235, 239)) ('tumor', 'Disease', (84, 89)) ('tumor', 'Disease', 'MESH:D009369', (294, 299)) ('tumor', 'Disease', (171, 176)) ('patients', 'Species', '9606', (110, 118)) ('tumors', 'Phenotype', 'HP:0002664', (294, 300)) 72647 31212687 Patients with pathogenic mutations in SDHB and FH, for example, have an elevated risk for malignant tumor development, regardless of whether the mutation was inherited or whether it occurred somatically. ('pathogenic', 'Reg', (14, 24)) ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('mutations', 'Var', (25, 34)) ('malignant tumor', 'Disease', (90, 105)) ('malignant tumor', 'Disease', 'MESH:D018198', (90, 105)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', '6390', (38, 42)) ('SDHB', 'Gene', (38, 42)) 72649 31212687 Therefore, patients with mutations associated with malignancy of tumors need to be followed up closely for metastatic disease. ('mutations', 'Var', (25, 34)) ('tumors', 'Phenotype', 'HP:0002664', (65, 71)) ('malignancy of tumors', 'Disease', (51, 71)) ('patients', 'Species', '9606', (11, 19)) ('malignancy of tumors', 'Disease', 'MESH:D018198', (51, 71)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) 72650 31212687 Taking these implications on clinical management into account, it is evident that patients can substantially benefit from combined genetic analysis of both blood and tumor-derived DNA. ('tumor', 'Disease', 'MESH:D009369', (166, 171)) ('tumor', 'Phenotype', 'HP:0002664', (166, 171)) ('benefit', 'Reg', (109, 116)) ('patients', 'Species', '9606', (82, 90)) ('tumor', 'Disease', (166, 171)) ('genetic analysis', 'Var', (131, 147)) 72651 31212687 We found that in our cohort germline testing identified pathogenic mutations in PPGL core genes in 19 out of 65 patients (29.2%). ('PPGL core', 'Gene', (80, 89)) ('pathogenic', 'Reg', (56, 66)) ('patients', 'Species', '9606', (112, 120)) ('mutations', 'Var', (67, 76)) 72653 31212687 Tumor analysis of 28 samples using the custom tailored PPGL panel revealed pathogenic mutations in 21 tumors (75%) of which 13 were available for germline testing (9 were from our routine clinical cohort who had received routine diagnostic testing, and 4 cases from our research cohort received targeted blood sequencing of variants after tumor testing, see Table 2). ('mutations', 'Var', (86, 95)) ('tumor', 'Disease', (339, 344)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('tumors', 'Disease', (102, 108)) ('tumors', 'Disease', 'MESH:D009369', (102, 108)) ('tumors', 'Phenotype', 'HP:0002664', (102, 108)) ('pathogenic', 'Reg', (75, 85)) ('tumor', 'Disease', 'MESH:D009369', (102, 107)) ('tumor', 'Phenotype', 'HP:0002664', (339, 344)) ('tumor', 'Disease', 'MESH:D009369', (339, 344)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('tumor', 'Disease', (102, 107)) 72654 31212687 About one third of these 13 mutations found in tumor tissue were also present in blood and therefore presumed to be germline, while two third of these pathogenic mutations had developed somatically. ('mutations', 'Var', (28, 37)) ('tumor', 'Disease', (47, 52)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('tumor', 'Disease', 'MESH:D009369', (47, 52)) 72661 31212687 Commonly used commercial sequencing panels for cancers are usually designed to either be used in clinical genetics in search for predisposing germline variants (such as the TruSight Cancer panel used in our routine diagnostic approach) or for application in molecular pathology for identification of somatic (hot-spot) variants in tumor tissues with focus on FFPE samples. ('tumor', 'Disease', 'MESH:D009369', (331, 336)) ('variants', 'Var', (319, 327)) ('tumor', 'Phenotype', 'HP:0002664', (331, 336)) ('Cancer', 'Phenotype', 'HP:0002664', (182, 188)) ('cancers', 'Disease', 'MESH:D009369', (47, 54)) ('cancers', 'Phenotype', 'HP:0002664', (47, 54)) ('tumor', 'Disease', (331, 336)) ('cancers', 'Disease', (47, 54)) ('cancer', 'Phenotype', 'HP:0002664', (47, 53)) 72663 31212687 Therefore, our PPGL panel can be applied to combined germline and tumor analysis, leading to a significant increase in detected mutations. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('increase', 'PosReg', (107, 115)) ('tumor', 'Disease', (66, 71)) ('mutations', 'Var', (128, 137)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) 72666 31212687 The first patient additionally carried a pathogenic SDHC germline mutation, which is in line with the reported enrichment of ATRX mutations in SDHx mutated tumors. ('ATRX', 'Gene', '546', (125, 129)) ('SDHC', 'Gene', (52, 56)) ('germline mutation', 'Var', (57, 74)) ('patient', 'Species', '9606', (10, 17)) ('SDHx', 'Chemical', '-', (143, 147)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('ATRX', 'Gene', (125, 129)) ('SDHC', 'Gene', '6391', (52, 56)) ('tumors', 'Disease', 'MESH:D009369', (156, 162)) ('tumors', 'Phenotype', 'HP:0002664', (156, 162)) ('tumors', 'Disease', (156, 162)) ('pathogenic', 'Reg', (41, 51)) 72667 31212687 The second tumor showed a somatic pathogenic TP53 mutation in addition to the ATRX truncating mutation. ('ATRX', 'Gene', (78, 82)) ('tumor', 'Phenotype', 'HP:0002664', (11, 16)) ('TP53', 'Gene', (45, 49)) ('ATRX', 'Gene', '546', (78, 82)) ('tumor', 'Disease', (11, 16)) ('tumor', 'Disease', 'MESH:D009369', (11, 16)) ('TP53', 'Gene', '7157', (45, 49)) ('mutation', 'Var', (50, 58)) 72668 31212687 TP53 mutations are rare in PPGLs compared to most other tumor types. ('TP53', 'Gene', '7157', (0, 4)) ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('TP53', 'Gene', (0, 4)) ('PPGLs', 'Disease', (27, 32)) ('tumor', 'Disease', (56, 61)) ('mutations', 'Var', (5, 14)) ('tumor', 'Disease', 'MESH:D009369', (56, 61)) 72669 31212687 However, it has been proposed they could have a synergistic effect on other driver mutations, and it seems plausible that both the ATRX and TP53 mutations affected tumor development in this patient. ('ATRX', 'Gene', '546', (131, 135)) ('tumor', 'Phenotype', 'HP:0002664', (164, 169)) ('tumor', 'Disease', (164, 169)) ('TP53', 'Gene', (140, 144)) ('mutations', 'Var', (145, 154)) ('tumor', 'Disease', 'MESH:D009369', (164, 169)) ('affected', 'Reg', (155, 163)) ('ATRX', 'Gene', (131, 135)) ('TP53', 'Gene', '7157', (140, 144)) ('patient', 'Species', '9606', (190, 197)) 72672 31212687 While sole ATRX mutations have been described to drive sporadic PPGL development, it could also be considered that in this patient a relevant second mutation might have escaped the analysis. ('PPGL', 'Disease', (64, 68)) ('patient', 'Species', '9606', (123, 130)) ('mutations', 'Var', (16, 25)) ('ATRX', 'Gene', (11, 15)) ('ATRX', 'Gene', '546', (11, 15)) 72677 31212687 For example, we identified a somatic IDH2 hot spot mutation (Arg172Gly) in a paraganglioma sample, as reported previously. ('Arg172Gly', 'SUBSTITUTION', 'None', (61, 70)) ('paraganglioma', 'Phenotype', 'HP:0002668', (77, 90)) ('IDH2', 'Gene', (37, 41)) ('paraganglioma', 'Disease', (77, 90)) ('IDH2', 'Gene', '3418', (37, 41)) ('paraganglioma', 'Disease', 'MESH:D010235', (77, 90)) ('Arg172Gly', 'Var', (61, 70)) 72678 31212687 In one patient in our cohort, who developed multiple tumors, no pathogenic mutation was identified by common sequencing approaches, since the underlying epigenetic event was hypermethylation of the SDHC promoter region, as was reported earlier. ('SDHC', 'Gene', '6391', (198, 202)) ('patient', 'Species', '9606', (7, 14)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('tumors', 'Phenotype', 'HP:0002664', (53, 59)) ('multiple tumors', 'Disease', 'MESH:D009369', (44, 59)) ('hypermethylation', 'Var', (174, 190)) ('SDHC', 'Gene', (198, 202)) ('multiple tumors', 'Disease', (44, 59)) 72686 31212687 This was complemented by custom array-CGH analysis for detection of copy number variations and multiplex ligation-dependent probe amplification (MLPA) (SDHA). ('copy number variations', 'Var', (68, 90)) ('SDHA', 'Gene', (152, 156)) ('SDHA', 'Gene', '6389', (152, 156)) 72693 31212687 In the case of diagnostic analysis, variants were called with a fixed ploidy algorithm with a required minimum frequency of 10 %, 3 reads supporting the variant and a required minimum coverage of 10 reads. ('ploidy algorithm', 'Disease', (70, 86)) ('ploidy algorithm', 'Disease', 'None', (70, 86)) ('variant', 'Var', (153, 160)) 72694 31212687 For research analysis of tumor tissue or blood, variants were called using a low frequency variant detection algorithm (no assumption of known sample ploidy) with a required minimum frequency of 5% and otherwise similar settings. ('tumor', 'Disease', (25, 30)) ('variants', 'Var', (48, 56)) ('tumor', 'Disease', 'MESH:D009369', (25, 30)) ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) 72696 31212687 Additionally, a sample with a heterozygous deletion of NF1 as previously identified by array-CGH was included as a positive control for CNV detection. ('deletion', 'Var', (43, 51)) ('NF1', 'Gene', (55, 58)) ('NF1', 'Gene', '4763', (55, 58)) 72702 31091718 A Transgenic Mouse Model of Pacak-Zhuang Syndrome with An Epas1 Gain-of-Function Mutation We previously identified a novel syndrome in patients characterized by paraganglioma, somatostatinoma, and polycythemia. ('polycythemia', 'Phenotype', 'HP:0001901', (197, 209)) ('patients', 'Species', '9606', (135, 143)) ('paraganglioma', 'Phenotype', 'HP:0002668', (161, 174)) ('Mutation', 'Var', (81, 89)) ('somatostatinoma', 'Disease', (176, 191)) ('somatostatinoma', 'Disease', 'MESH:D013005', (176, 191)) ('Gain-of-Function', 'PosReg', (64, 80)) ('paraganglioma', 'Disease', (161, 174)) ('polycythemia', 'Disease', 'MESH:D011086', (197, 209)) ('Epas1', 'Gene', '13819', (58, 63)) ('paraganglioma', 'Disease', 'MESH:D010235', (161, 174)) ('Epas1', 'Gene', (58, 63)) ('Mouse', 'Species', '10090', (13, 18)) ('polycythemia', 'Disease', (197, 209)) 72704 31091718 Genetic mosaicism of gain-of-function mutations of the EPAS1 gene (encoding HIF2alpha) located in the oxygen degradation domain (ODD), typically p.530-532, was shown as the etiology of this syndrome. ('p.530-532', 'Var', (145, 154)) ('oxygen', 'Chemical', 'MESH:D010100', (102, 108)) ('syndrome', 'Disease', (190, 198)) ('gain-of-function', 'PosReg', (21, 37)) ('mutations', 'Var', (38, 47)) ('EPAS1', 'Gene', (55, 60)) 72706 31091718 Further, inhibition of HIF2alpha with its specific inhibitor PT2385 significantly reduced erythropoietin levels in the mutant mice. ('inhibition', 'NegReg', (9, 19)) ('mice', 'Species', '10090', (126, 130)) ('erythropoietin levels', 'MPA', (90, 111)) ('HIF2alpha', 'Protein', (23, 32)) ('reduced', 'NegReg', (82, 89)) ('mutant', 'Var', (119, 125)) ('PT2385', 'Chemical', 'MESH:C000614279', (61, 67)) ('reduced erythropoietin', 'Phenotype', 'HP:0010972', (82, 104)) 72707 31091718 However, polycythemia persisted after PT2385 treatment, suggesting an alternative erythropoietin-independent mechanism of polycythemia. ('polycythemia', 'Phenotype', 'HP:0001901', (9, 21)) ('polycythemia', 'Disease', 'MESH:D011086', (9, 21)) ('PT2385', 'Chemical', 'MESH:C000614279', (38, 44)) ('polycythemia', 'Disease', (122, 134)) ('polycythemia', 'Phenotype', 'HP:0001901', (122, 134)) ('polycythemia', 'Disease', 'MESH:D011086', (122, 134)) ('polycythemia', 'Disease', (9, 21)) ('PT2385', 'Var', (38, 44)) 72708 31091718 These findings demonstrate the vital roles of EPAS1 mutations in the syndrome development and the great potential of the Epas1A529V animal model for further pathogenesis and therapeutics studies. ('mutations', 'Var', (52, 61)) ('EPAS1', 'Gene', (46, 51)) ('syndrome development', 'Disease', (69, 89)) ('Epas1A529V', 'Chemical', '-', (121, 131)) 72712 31091718 We found that the patients share common postzygotic mutations, including p.A530T/V, P531S, Y532C, L529P, T519M, and P544S, in the oxygen degradation domain (ODD) of EPAS1, encoding hypoxia-inducible factor 2alpha (HIF2alpha). ('P531S', 'Var', (84, 89)) ('T519M', 'Mutation', 'rs377001303', (105, 110)) ('EPAS1', 'Gene', (165, 170)) ('P544S', 'Var', (116, 121)) ('T519M', 'Var', (105, 110)) ('Y532C', 'Mutation', 'p.Y532C', (91, 96)) ('hypoxia-inducible factor 2alpha', 'Gene', (181, 212)) ('L529P', 'Mutation', 'rs753839987', (98, 103)) ('P544S', 'Mutation', 'p.P544S', (116, 121)) ('patients', 'Species', '9606', (18, 26)) ('P531S', 'Mutation', 'p.P531S', (84, 89)) ('Y532C', 'Var', (91, 96)) ('p.A530T', 'SUBSTITUTION', 'None', (73, 80)) ('L529P', 'Var', (98, 103)) ('p.A530T', 'Var', (73, 80)) ('oxygen', 'Chemical', 'MESH:D010100', (130, 136)) ('hypoxia-inducible factor 2alpha', 'Gene', '2034', (181, 212)) 72713 31091718 These mutations were found to disturb the hydroxylation of ODD of the HIF2alpha protein by prolyl hydroxylase 2 (PHD2), which impairs its binding with von Hippel-Lindau protein and subsequently increases HIF2alpha protein stability. ('PHD2', 'Gene', '112405', (113, 117)) ('HIF2alpha', 'Gene', (70, 79)) ('PHD2', 'Gene', (113, 117)) ('disturb', 'Reg', (30, 37)) ('stability', 'MPA', (222, 231)) ('impairs', 'NegReg', (126, 133)) ('prolyl hydroxylase 2', 'Gene', '112405', (91, 111)) ('binding', 'Interaction', (138, 145)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (151, 168)) ('increases', 'PosReg', (194, 203)) ('prolyl hydroxylase 2', 'Gene', (91, 111)) ('hydroxylation of', 'MPA', (42, 58)) ('von Hippel-Lindau', 'Disease', (151, 168)) ('mutations', 'Var', (6, 15)) 72719 31091718 Secondary polycythemia occurs as a consequence of elevated circulating erythropoietin (EPO), while primary polycythemia is due to intrinsic factors (e.g., somatic JAK2V617F mutation and hereditary dominant EPOR mutations) of erythroid progenitors in the bone marrow and is EPO-independent. ('EPOR', 'Gene', '13857', (206, 210)) ('polycythemia', 'Disease', 'MESH:D011086', (107, 119)) ('elevated', 'PosReg', (50, 58)) ('circulating', 'MPA', (59, 70)) ('mutations', 'Var', (211, 220)) ('JAK2V617F mutation', 'Var', (163, 181)) ('polycythemia', 'Disease', (10, 22)) ('polycythemia', 'Disease', (107, 119)) ('EPOR', 'Gene', (206, 210)) ('polycythemia', 'Phenotype', 'HP:0001901', (10, 22)) ('polycythemia', 'Disease', 'MESH:D011086', (10, 22)) ('polycythemia', 'Phenotype', 'HP:0001901', (107, 119)) 72723 31091718 EPAS1 mutations were previously only found to cause familial polycythemia and pulmonary arterial hypertension. ('familial polycythemia and pulmonary arterial hypertension', 'Disease', 'MESH:D000081029', (52, 109)) ('hypertension', 'Phenotype', 'HP:0000822', (97, 109)) ('EPAS1', 'Gene', (0, 5)) ('polycythemia', 'Phenotype', 'HP:0001901', (61, 73)) ('cause', 'Reg', (46, 51)) ('pulmonary arterial hypertension', 'Phenotype', 'HP:0002092', (78, 109)) ('mutations', 'Var', (6, 15)) 72725 31091718 In this study, we aimed to develop a transgenic mouse model to achieve the following aims: (1) to confirm EPAS1 mutations are causative gene mutations for the syndrome and (2) to use this model for further pathogenesis and therapeutic studies of the syndrome. ('mutations', 'Var', (112, 121)) ('syndrome', 'Disease', (159, 167)) ('EPAS1', 'Gene', (106, 111)) ('mouse', 'Species', '10090', (48, 53)) 72726 31091718 The syndrome patients were found to carry somatic EPAS1 mutations in the ODD without other germline mutations. ('EPAS1', 'Gene', (50, 55)) ('patients', 'Species', '9606', (13, 21)) ('mutations', 'Var', (56, 65)) 72731 31091718 Sanger sequencing also confirmed the presence of the A529V mutation (GCA>GTA) in the positive ES colonies before injection into the blastocysts (Figure 1C). ('blastocysts', 'Disease', 'MESH:D020964', (132, 143)) ('GCA>GTA', 'Gene', (69, 76)) ('A529V', 'Mutation', 'rs115472527', (53, 58)) ('blastocysts', 'Disease', (132, 143)) ('A529V', 'Var', (53, 58)) 72733 31091718 The neomycin cassette upstream of the A529V point mutation in exon 12 blocked the transcription of the mutant allele, and no obvious defects were observed in Epas1neo/+ mice. ('transcription', 'MPA', (82, 95)) ('A529V point mutation', 'Var', (38, 58)) ('Epas1', 'Gene', '13819', (158, 163)) ('neomycin', 'Chemical', 'MESH:D009355', (4, 12)) ('mice', 'Species', '10090', (169, 173)) ('Epas1', 'Gene', (158, 163)) ('blocked', 'NegReg', (70, 77)) ('A529V', 'Mutation', 'rs115472527', (38, 43)) 72735 31091718 Genotyping PCR and Sanger sequencing confirmed the successful deletion of the neomycin cassette in tail DNA of Epas1A529V mutant mice (Figure 2B). ('neomycin', 'Chemical', 'MESH:D009355', (78, 86)) ('neomycin cassette', 'Gene', (78, 95)) ('mice', 'Species', '10090', (129, 133)) ('Epas1A529V', 'Chemical', '-', (111, 121)) ('Epas1A529V', 'Gene', (111, 121)) ('deletion', 'Var', (62, 70)) ('mutant', 'Var', (122, 128)) 72736 31091718 To confirm the expression of the Epas1A529V mutant allele, we extracted RNA from multiple tissues of the Epas1A529V mutant mice, including heart, lung, liver, kidney, duodenum, adrenal gland, spleen, and testis, and performed reverse transcription. ('Epas1A529V', 'Gene', (105, 115)) ('Epas1A529V', 'Chemical', '-', (33, 43)) ('Epas1A529V', 'Chemical', '-', (105, 115)) ('expression', 'Species', '29278', (15, 25)) ('mutant', 'Var', (116, 122)) ('mice', 'Species', '10090', (123, 127)) 72741 31091718 A complete blood count (CBC) test confirmed polycythemia by respective 39.9%, 60.7%, and 56.5% elevations in erythrocyte count, hemoglobin, and hematocrit of somatic Epas1A529V mutant mice compared to littermate controls (Figure 3B). ('Epas1A529V', 'Chemical', '-', (166, 176)) ('Epas1A529V', 'Gene', (166, 176)) ('hemoglobin', 'MPA', (128, 138)) ('hematocrit', 'MPA', (144, 154)) ('polycythemia', 'Disease', 'MESH:D011086', (44, 56)) ('elevations', 'PosReg', (95, 105)) ('polycythemia', 'Phenotype', 'HP:0001901', (44, 56)) ('erythrocyte count', 'MPA', (109, 126)) ('mutant', 'Var', (177, 183)) ('mice', 'Species', '10090', (184, 188)) ('polycythemia', 'Disease', (44, 56)) ('elevations in erythrocyte', 'Phenotype', 'HP:0001901', (95, 120)) 72742 31091718 Minorly increased mean corpuscular volume (MCV) and significantly reduced platelets in the mutant mice were noted, and no change was observed for white blood cells (Figure 3B). ('reduced', 'NegReg', (66, 73)) ('platelets', 'CPA', (74, 83)) ('mean corpuscular volume', 'MPA', (18, 41)) ('increased', 'PosReg', (8, 17)) ('mutant', 'Var', (91, 97)) ('increased mean corpuscular volume', 'Phenotype', 'HP:0005518', (8, 41)) ('mice', 'Species', '10090', (98, 102)) 72743 31091718 We measured plasma EPO concentrations and observed significantly increased EPO levels in Epas1A529V mice (Figure 3C). ('Epas1A529V', 'Var', (89, 99)) ('increased', 'PosReg', (65, 74)) ('mice', 'Species', '10090', (100, 104)) ('Epas1A529V', 'Chemical', '-', (89, 99)) ('plasma EPO concentrations', 'MPA', (12, 37)) ('EPO levels', 'MPA', (75, 85)) 72744 31091718 The EPO concentrations in mutant mice were about twice those in littermate control mice. ('mutant', 'Var', (26, 32)) ('EPO concentrations', 'MPA', (4, 22)) ('mice', 'Species', '10090', (33, 37)) ('mice', 'Species', '10090', (83, 87)) 72745 31091718 Elevated plasma EPO level in mutant mice is expected because the Epo gene is a direct target of the HIF2alpha/HIF1beta dimer. ('plasma EPO level', 'MPA', (9, 25)) ('HIF1beta', 'Gene', (110, 118)) ('HIF1beta', 'Gene', '11863', (110, 118)) ('mutant', 'Var', (29, 35)) ('Elevated', 'PosReg', (0, 8)) ('Epo', 'Gene', '13856', (65, 68)) ('mice', 'Species', '10090', (36, 40)) ('Epo', 'Gene', (65, 68)) 72746 31091718 We also performed real-time RT-PCR to compare Epo mRNA levels in different tissues and found that Epo expression was much higher in kidney than in other tissues of both control and mutant mice (Figure 3D). ('Epo', 'Gene', (46, 49)) ('Epo', 'Gene', '13856', (46, 49)) ('mutant', 'Var', (181, 187)) ('expression', 'Species', '29278', (102, 112)) ('mice', 'Species', '10090', (188, 192)) ('expression', 'MPA', (102, 112)) ('higher', 'PosReg', (122, 128)) ('Epo', 'Gene', (98, 101)) ('Epo', 'Gene', '13856', (98, 101)) 72747 31091718 Epo expression level was dramatically enhanced in mutant kidney by about thirteen-fold compared to control kidney (Figure 3D). ('expression', 'Species', '29278', (4, 14)) ('enhanced', 'PosReg', (38, 46)) ('Epo', 'Gene', (0, 3)) ('mutant', 'Var', (50, 56)) ('Epo', 'Gene', '13856', (0, 3)) 72748 31091718 EPO immunohistochemistry (IHC) staining also confirmed increased EPO expression in the mutant kidney (Figure 3E). ('EPO', 'Gene', (65, 68)) ('expression', 'Species', '29278', (69, 79)) ('increased', 'PosReg', (55, 64)) ('expression', 'MPA', (69, 79)) ('mutant', 'Var', (87, 93)) 72749 31091718 These results suggest that the Epas1A529V mutation increased EPO expression in the kidney, leading to polycythemia. ('increased', 'PosReg', (51, 60)) ('polycythemia', 'Disease', (102, 114)) ('leading to', 'Reg', (91, 101)) ('expression', 'Species', '29278', (65, 75)) ('EPO', 'Protein', (61, 64)) ('mutation', 'Var', (42, 50)) ('expression', 'MPA', (65, 75)) ('polycythemia', 'Disease', 'MESH:D011086', (102, 114)) ('polycythemia', 'Phenotype', 'HP:0001901', (102, 114)) ('Epas1A529V', 'Chemical', '-', (31, 41)) ('Epas1A529V', 'Gene', (31, 41)) 72752 31091718 Although no pheochromocytomas or paragangliomas were found in up to one-year-old mutant mice, lower ratios of urinary metanephrine (MN) to NMN were observed in Epas1A529V mutant mice (Figure 4A). ('ratios', 'MPA', (100, 106)) ('Epas1A529V', 'Chemical', '-', (160, 170)) ('mice', 'Species', '10090', (178, 182)) ('Epas1A529V mutant', 'Var', (160, 177)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (12, 29)) ('metanephrine', 'Chemical', 'MESH:D008676', (118, 130)) ('lower', 'NegReg', (94, 99)) ('paragangliomas', 'Disease', (33, 47)) ('paragangliomas', 'Disease', 'MESH:D010235', (33, 47)) ('NMN', 'Chemical', 'MESH:D009647', (139, 142)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (12, 29)) ('mice', 'Species', '10090', (88, 92)) ('pheochromocytomas', 'Disease', (12, 29)) ('paraganglioma', 'Phenotype', 'HP:0002668', (33, 46)) ('paragangliomas', 'Phenotype', 'HP:0002668', (33, 47)) 72753 31091718 Expression of phenylethanolamine N-methyltransferase (PNMT), which converts norepinephrine (precursor of NMN) to epinephrine (precursor of MN) was similarly down-regulated in the adrenal glands of mutant mice (Figure 4B). ('PNMT', 'Gene', (54, 58)) ('epinephrine', 'Chemical', 'MESH:D004837', (113, 124)) ('down-regulated', 'NegReg', (157, 171)) ('Expression', 'Species', '29278', (0, 10)) ('NMN', 'Chemical', 'MESH:D009647', (105, 108)) ('epinephrine', 'Chemical', 'MESH:D004837', (79, 90)) ('mutant', 'Var', (197, 203)) ('PNMT', 'Gene', '18948', (54, 58)) ('mice', 'Species', '10090', (204, 208)) ('norepinephrine', 'Chemical', 'MESH:D009638', (76, 90)) 72757 31091718 Although gross somatostatinoma was not found in our mice, enhanced expression of Sst, encoding somatostatin, was found in the duodenum tissue of Epas1A529V mutant mice (Figure 4D). ('Epas1A529V mutant', 'Var', (145, 162)) ('somatostatinoma', 'Disease', 'MESH:D013005', (15, 30)) ('enhanced', 'PosReg', (58, 66)) ('mice', 'Species', '10090', (52, 56)) ('somatostatinoma', 'Disease', (15, 30)) ('expression', 'Species', '29278', (67, 77)) ('Sst', 'Gene', (81, 84)) ('mice', 'Species', '10090', (163, 167)) ('expression', 'MPA', (67, 77)) ('Epas1A529V', 'Chemical', '-', (145, 155)) 72761 31091718 Treatment of the mutant mice for one month with a specific antagonist of HIF2alpha, PT2385, demonstrated effective reduction of EPO levels in the mutant mice (Figure 5A). ('reduction', 'NegReg', (115, 124)) ('mice', 'Species', '10090', (24, 28)) ('EPO levels', 'MPA', (128, 138)) ('mutant', 'Var', (146, 152)) ('mice', 'Species', '10090', (153, 157)) ('PT2385', 'Chemical', 'MESH:C000614279', (84, 90)) 72762 31091718 However, this antagonism of HIF2alpha did not resolve polycythemia even after treatment for two months (Figure 5B). ('polycythemia', 'Phenotype', 'HP:0001901', (54, 66)) ('antagonism', 'Var', (14, 24)) ('polycythemia', 'Disease', (54, 66)) ('polycythemia', 'Disease', 'MESH:D011086', (54, 66)) 72764 31091718 The colony-forming unit (CFU) assay of bone marrow hematopoietic progenitors revealed increased erythroid colony number in mutant mice (Figure 5C,D), indicating that the gain-of-function mutant HIF2alpha increased the erythroid differentiation of the progenitor cells and further supporting an EPO-independent component of polycythemia in this syndrome. ('gain-of-function', 'PosReg', (170, 186)) ('mice', 'Species', '10090', (130, 134)) ('increased', 'PosReg', (86, 95)) ('polycythemia', 'Disease', 'MESH:D011086', (323, 335)) ('HIF2alpha', 'Gene', (194, 203)) ('increased', 'PosReg', (204, 213)) ('mutant', 'Var', (187, 193)) ('polycythemia', 'Disease', (323, 335)) ('HIF2alpha increased', 'Phenotype', 'HP:0032420', (194, 213)) ('erythroid differentiation of the progenitor cells', 'CPA', (218, 267)) ('polycythemia', 'Phenotype', 'HP:0001901', (323, 335)) ('mutant', 'Var', (123, 129)) ('erythroid colony number', 'CPA', (96, 119)) 72767 31091718 Increased erythroid colony number in the CFU assay in mutant mice indicates that somatic Epas1A529V mutation in erythrocyte progenitor cells of the bone marrow may also contribute to primary polycythemia in the syndrome. ('polycythemia', 'Phenotype', 'HP:0001901', (191, 203)) ('mice', 'Species', '10090', (61, 65)) ('contribute to', 'Reg', (169, 182)) ('Epas1A529V', 'Chemical', '-', (89, 99)) ('Epas1A529V', 'Gene', (89, 99)) ('mutation', 'Var', (100, 108)) ('polycythemia in the syndrome', 'Disease', (191, 219)) ('mutant', 'Var', (54, 60)) ('polycythemia in the syndrome', 'Disease', 'MESH:D011086', (191, 219)) 72769 31091718 Somatostatin and adrenal medullary cells are of neural crest origin; early mutation of Epas1 may impact the migration path of these cells and lead to tumors characterized by clusters of immature cells. ('Epas1', 'Gene', (87, 92)) ('tumors', 'Disease', (150, 156)) ('tumors', 'Disease', 'MESH:D009369', (150, 156)) ('migration path of these cells', 'CPA', (108, 137)) ('tumors', 'Phenotype', 'HP:0002664', (150, 156)) ('mutation', 'Var', (75, 83)) ('Epas1', 'Gene', '13819', (87, 92)) ('tumor', 'Phenotype', 'HP:0002664', (150, 155)) ('impact', 'NegReg', (97, 103)) ('lead to', 'Reg', (142, 149)) 72770 31091718 The Epas1A529V mouse model developed in the present study supports this mutation as the etiology of the Pacak-Zhuang syndrome. ('etiology', 'Reg', (88, 96)) ('mouse', 'Species', '10090', (15, 20)) ('Epas1A529V', 'Chemical', '-', (4, 14)) ('mutation', 'Var', (72, 80)) ('Pacak-Zhuang syndrome', 'Disease', (104, 125)) 72771 31091718 We have demonstrated that the mutation is sufficient for the development of polycythemia, increased EPO secretion, somatostatinoma-related manifestations, and immature chromaffin cell features consistent with the origins of the noradrenergic paragangliomas and pheochromocytomas characteristic of the affected patients. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (261, 278)) ('patients', 'Species', '9606', (310, 318)) ('chromaffin', 'Chemical', '-', (168, 178)) ('polycythemia', 'Phenotype', 'HP:0001901', (76, 88)) ('polycythemia', 'Disease', 'MESH:D011086', (76, 88)) ('increased', 'PosReg', (90, 99)) ('somatostatinoma', 'Disease', (115, 130)) ('mutation', 'Var', (30, 38)) ('somatostatinoma', 'Disease', 'MESH:D013005', (115, 130)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (261, 278)) ('EPO secretion', 'MPA', (100, 113)) ('pheochromocytomas', 'Disease', (261, 278)) ('paragangliomas', 'Disease', (242, 256)) ('paragangliomas', 'Disease', 'MESH:D010235', (242, 256)) ('paragangliomas', 'Phenotype', 'HP:0002668', (242, 256)) ('polycythemia', 'Disease', (76, 88)) ('paraganglioma', 'Phenotype', 'HP:0002668', (242, 255)) 72773 31091718 Notably, the overproduction of erythrocytes and decreased platelets in somatic heterozygous Epas1A529V mice were more significant than what was observed in Epas1G536W/G536W mice. ('Epas1A529V', 'Chemical', '-', (92, 102)) ('decreased platelets', 'Phenotype', 'HP:0005537', (48, 67)) ('mice', 'Species', '10090', (103, 107)) ('platelets', 'MPA', (58, 67)) ('decreased', 'NegReg', (48, 57)) ('G536W', 'Mutation', 'p.G536W', (167, 172)) ('Epas1A529V', 'Var', (92, 102)) ('G536W', 'Mutation', 'p.G536W', (161, 166)) ('mice', 'Species', '10090', (173, 177)) 72774 31091718 This indicates that our model also mirrors human polycythemias with gain-of-function EPAS1 mutations that are inherited in a dominant fashion (heterozygote). ('polycythemias', 'Disease', (49, 62)) ('gain-of-function', 'PosReg', (68, 84)) ('EPAS1', 'Gene', (85, 90)) ('polycythemias', 'Disease', 'MESH:D011086', (49, 62)) ('mutations', 'Var', (91, 100)) ('polycythemia', 'Phenotype', 'HP:0001901', (49, 61)) ('polycythemias', 'Phenotype', 'HP:0001901', (49, 62)) ('human', 'Species', '9606', (43, 48)) 72775 31091718 The proximity of A529 to P530, the hydroxylation site of PHD2, compared to G536, appears to result in a more severe phenotype, suggesting that severity is related to the degree of impact on the association of PHD2 with HIF2alpha. ('result', 'Reg', (92, 98)) ('P530', 'Var', (25, 29)) ('PHD2', 'Gene', '112405', (57, 61)) ('PHD2', 'Gene', '112405', (209, 213)) ('A529', 'Var', (17, 21)) ('PHD2', 'Gene', (57, 61)) ('PHD2', 'Gene', (209, 213)) ('association', 'Interaction', (194, 205)) 72777 31091718 These results suggest that stabilized HIF2alpha protein caused by gain-of-function mutations in the ODD domain is sufficient to block the differentiation of chromaffin progenitor cells and maintain their immature phenotype. ('mutations', 'Var', (83, 92)) ('chromaffin', 'Chemical', '-', (157, 167)) ('HIF2alpha', 'Gene', (38, 47)) ('differentiation of chromaffin progenitor cells', 'CPA', (138, 184)) ('block', 'NegReg', (128, 133)) ('immature phenotype', 'CPA', (204, 222)) ('maintain', 'Reg', (189, 197)) ('gain-of-function', 'PosReg', (66, 82)) 72781 31091718 We believe that the development of discrete tumors may be more complicated and likely depends on multiple factors including acquiring additional driver gene mutations (e.g., copy number alterations of 1p SDHB and 3p VHL) and environment changes such as hypoxic stress. ('copy number alterations', 'Var', (174, 197)) ('tumors', 'Phenotype', 'HP:0002664', (44, 50)) ('SDHB', 'Gene', (204, 208)) ('hypoxic stress', 'Disease', 'MESH:D004194', (253, 267)) ('VHL', 'Gene', '22346', (216, 219)) ('discrete tumors', 'Disease', (35, 50)) ('hypoxic stress', 'Disease', (253, 267)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('VHL', 'Gene', (216, 219)) ('SDHB', 'Gene', '67680', (204, 208)) ('discrete tumors', 'Disease', 'MESH:D021922', (35, 50)) 72785 31091718 Epas1 A529V point mutation was then introduced in the 3' arm of the HR vector using QuikChange Lightning Site-Directed Mutagenesis Kit (Agilent, Santa Clara, CA, USA). ('A529V point mutation', 'Var', (6, 26)) ('Epas1', 'Gene', (0, 5)) ('Epas1', 'Gene', '13819', (0, 5)) ('A529V', 'Mutation', 'rs115472527', (6, 11)) 72801 31091718 Epas1 gene expression level in different tissues was compared by combining positive events of both wild-type and mutant alleles. ('mutant', 'Var', (113, 119)) ('Epas1', 'Gene', (0, 5)) ('Epas1', 'Gene', '13819', (0, 5)) ('expression', 'Species', '29278', (11, 21)) 72816 31091718 These mice share polycythemia and biochemistry features of the syndrome, demonstrating gain-of-function mutations of EPAS1 in the ODD domain as the causative gene mutation of the syndrome development. ('mutations', 'Var', (104, 113)) ('polycythemia', 'Disease', (17, 29)) ('syndrome development', 'Disease', (179, 199)) ('mice', 'Species', '10090', (6, 10)) ('polycythemia', 'Phenotype', 'HP:0001901', (17, 29)) ('gain-of-function', 'PosReg', (87, 103)) ('EPAS1', 'Gene', (117, 122)) ('polycythemia', 'Disease', 'MESH:D011086', (17, 29)) 72818 30871634 Mutational load in carotid body tumor Carotid body tumor (CBT) is a rare neoplasm arising from paraganglion located near the bifurcation of the carotid artery. ('Carotid body tumor', 'Disease', 'MESH:D002345', (38, 56)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('neoplasm', 'Disease', (73, 81)) ('tumor', 'Disease', (51, 56)) ('tumor', 'Disease', 'MESH:D009369', (32, 37)) ('neoplasm', 'Phenotype', 'HP:0002664', (73, 81)) ('carotid body tumor', 'Phenotype', 'HP:0002668', (19, 37)) ('Carotid body tumor', 'Phenotype', 'HP:0002668', (38, 56)) ('Carotid body tumor', 'Disease', (38, 56)) ('neoplasm', 'Disease', 'MESH:D009369', (73, 81)) ('neoplasm arising from paraganglion', 'Phenotype', 'HP:0002668', (73, 107)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('tumor', 'Disease', 'MESH:D009369', (51, 56)) ('tumor', 'Disease', (32, 37)) ('Mutational load', 'Var', (0, 15)) 72822 30871634 Additionally, we identified several pathogenic/likely pathogenic somatic and germline allelic variants across six patients studied (including TP53 variants). ('TP53', 'Gene', '7157', (142, 146)) ('pathogenic/likely', 'Reg', (36, 53)) ('TP53', 'Gene', (142, 146)) ('pathogenic', 'Reg', (54, 64)) ('variants', 'Var', (94, 102)) ('patients', 'Species', '9606', (114, 122)) 72824 30871634 Identified variants in known paraganglioma/pheochromocytoma-causative genes and novel genes could be associated with the pathogenesis of CBT. ('paraganglioma', 'Disease', (29, 42)) ('CBT', 'Disease', (137, 140)) ('variants', 'Var', (11, 19)) ('pheochromocytoma', 'Disease', (43, 59)) ('paraganglioma', 'Disease', 'MESH:D010235', (29, 42)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (43, 59)) ('associated', 'Reg', (101, 111)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (43, 59)) ('glioma', 'Phenotype', 'HP:0009733', (36, 42)) ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) 72833 30871634 They result from different mutations in tumor cells, and the potential of neoantigen formation is correlated with mutational load (ML). ('result from', 'Reg', (5, 16)) ('tumor', 'Disease', 'MESH:D009369', (40, 45)) ('mutational load', 'Var', (114, 129)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('tumor', 'Disease', (40, 45)) 72845 30871634 First, we applied VarScan to reveal somatic variants in paired ('tumor versus normal') mode. ("'tumor", 'Disease', (64, 70)) ("'tumor", 'Disease', 'MESH:D009369', (64, 70)) ('variants', 'Var', (44, 52)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) 72849 30871634 Next, we merged BAMs for blood and lymph nodes per each patient and used these BAMs along with PoN to call somatic variants with Mutect2 in 'tumor versus normal' mode. ('Mutect2', 'Gene', (129, 136)) ("'tumor", 'Disease', 'MESH:D009369', (140, 146)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ("'tumor", 'Disease', (140, 146)) ('variants', 'Var', (115, 123)) ('patient', 'Species', '9606', (56, 63)) 72851 30871634 We included allele population frequency databases (gnomAD, 1000 Genomes Project, Kaviar, ESP 6500, and ExAC), public variant databases (dbSNP, ClinVar, and COSMIC), phastCons containing conservation data for vertebrates, primates, and placental mammals, and InterPro to analyze the localizations of variants in protein domains. ('ESP', 'Gene', '148713', (89, 92)) ('placental mammals', 'Species', '9347', (235, 252)) ('variants', 'Var', (299, 307)) ('ESP', 'Gene', (89, 92)) 72852 30871634 Additionally, prediction tools such as SIFT, PolyPhen2, MutationTaster, LRT, InterVar, PROVEAN, M-CAP, MetaSVM, and MetaLR were used to assess the pathogenicity of the variants. ('SIFT', 'Disease', 'None', (39, 43)) ('variants', 'Var', (168, 176)) ('SIFT', 'Disease', (39, 43)) 72853 30871634 Additionally, the list of somatic variants was filtered according to the minimal read coverage threshold (min 20 reads for a merged norm and min 10 reads for the tumor sample). ('min', 'Var', (141, 144)) ('tumor', 'Phenotype', 'HP:0002664', (162, 167)) ('tumor', 'Disease', (162, 167)) ('tumor', 'Disease', 'MESH:D009369', (162, 167)) 72856 30871634 To evaluate the effect of FFPE artifacts on the results, we compared 'lymph node (FFPE) versus blood' and revealed a great number of variants (hundreds) that was almost equal to the number of somatic variants found in the 'tumor (FFPE) versus blood' comparison (including variant with low alternative allele (AF) frequency). ('tumor', 'Phenotype', 'HP:0002664', (223, 228)) ("'tumor", 'Disease', (222, 228)) ('AF', 'Disease', 'MESH:D001281', (309, 311)) ("'tumor", 'Disease', 'MESH:D009369', (222, 228)) ('variants', 'Var', (133, 141)) 72862 30871634 Additionally, this may suggest slight co-occurrence of formalin-induced variants, which are partially 'subtracted' when comparing two FFPE samples. ('formalin', 'Chemical', 'MESH:D005557', (55, 63)) ('formalin-induced', 'Disease', (55, 71)) ('variants', 'Var', (72, 80)) 72863 30871634 Among Mutect results, there are several false-positive somatic variants with low AF (5-10%) but high coverage (10-30 reads for alternative allele; the total coverage was at least 300x) observed in tumor, lymph node and blood samples. ('tumor', 'Disease', 'MESH:D009369', (197, 202)) ('variants', 'Var', (63, 71)) ('low AF', 'Disease', (77, 83)) ('tumor', 'Phenotype', 'HP:0002664', (197, 202)) ('low AF', 'Disease', 'MESH:D009800', (77, 83)) ('tumor', 'Disease', (197, 202)) 72867 30871634 Totally, we found 70-130 potentially somatic variants in each patient comparing 'tumor (FFPE) versus matched lymph node (FFPE) and blood + PoN'. ('variants', 'Var', (45, 53)) ("'tumor", 'Disease', 'MESH:D009369', (80, 86)) ('patient', 'Species', '9606', (62, 69)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ("'tumor", 'Disease', (80, 86)) 72868 30871634 Most of these variants have low AF (Fig. ('variants', 'Var', (14, 22)) ('low AF', 'Disease', (28, 34)) ('low AF', 'Disease', 'MESH:D009800', (28, 34)) 72870 30871634 When calculating the total mutational load, it is incorrect to consider a somatic variant that is observed only in a fraction of the tumor cells (such variants are featured with low AF) as a "whole one". ('variants', 'Var', (151, 159)) ('tumor', 'Disease', 'MESH:D009369', (133, 138)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('tumor', 'Disease', (133, 138)) ('low AF', 'Disease', (178, 184)) ('low AF', 'Disease', 'MESH:D009800', (178, 184)) 72871 30871634 Otherwise, the higher sequencing coverage, the more we can find variants with very low AF values, and the higher calculated mutational load will be. ('low AF', 'Disease', (83, 89)) ('low AF', 'Disease', 'MESH:D009800', (83, 89)) ('variants', 'Var', (64, 72)) 72878 30871634 For most patients, a significant reduce in the number of variants occurs in the region of AF = 10-15%. ('variants', 'Var', (57, 65)) ('patients', 'Species', '9606', (9, 17)) ('AF', 'Disease', 'MESH:D001281', (90, 92)) ('reduce', 'NegReg', (33, 39)) 72880 30871634 In two patients (Pat103 and Pat104) we found two co-occurred variants in TP53 gene, NM_000546.5: c.842A > T, p.Asp281Val (chr17: 7,577,096, rs587781525) and NM_000546.5: c.A170A > G, p. Asp57Gly (chr17: 7,579,517). ('NM_000546.5: c.A170A > G', 'Mutation', 'rs1442824382', (157, 181)) ('Asp57Gly', 'Var', (186, 194)) ('p.Asp281Val', 'Var', (109, 120)) ('TP53', 'Gene', '7157', (73, 77)) ('p.Asp281Val', 'Mutation', 'rs587781525', (109, 120)) ('rs587781525', 'Mutation', 'rs587781525', (140, 151)) ('Asp57Gly', 'SUBSTITUTION', 'None', (186, 194)) ('TP53', 'Gene', (73, 77)) ('NM_000546.5: c.842A > T', 'Mutation', 'rs587781525', (84, 107)) ('rs587781525', 'Var', (140, 151)) ('c.842A > T', 'Var', (97, 107)) ('NM_000546.5: c.A170A > G', 'Var', (157, 181)) ('patients', 'Species', '9606', (7, 15)) 72882 30871634 Variant NM_000546.5: c.A170A > G, p. Asp57Gly (chr17: 7579517) was not previously described in databases and in the literature. ('c.A170A > G', 'Var', (21, 32)) ('Asp57Gly', 'SUBSTITUTION', 'None', (37, 45)) ('Asp57Gly', 'Var', (37, 45)) ('NM_000546.5: c.A170A > G', 'Mutation', 'rs1442824382', (8, 32)) 72883 30871634 In our study, this variant was found with high AF (0.55 and 0.23 for Pat103 and Pat104, respectively) and was classified to be likely pathogenic by most prediction tools. ('Pat103', 'Var', (69, 75)) ('Pat104', 'Var', (80, 86)) ('pathogenic', 'Reg', (134, 144)) ('AF', 'Disease', 'MESH:D001281', (47, 49)) 72884 30871634 These two variants can be associated with biallelic inactivation of TP53 gene and are involved in the pathogenesis of CBT. ('biallelic inactivation', 'Var', (42, 64)) ('involved', 'Reg', (86, 94)) ('TP53', 'Gene', '7157', (68, 72)) ('CBT', 'Disease', (118, 121)) ('TP53', 'Gene', (68, 72)) ('associated', 'Reg', (26, 36)) 72885 30871634 Potential driver variant NM_003002: c.A1A > T, p. Met1Leu (chr11: 111,957,632, rs104894307) in SDHD gene was revealed for Pat103. ('Met1Leu', 'SUBSTITUTION', 'None', (50, 57)) ('c.A1A > T', 'Var', (36, 45)) ('Met1Leu', 'Var', (50, 57)) ('SDHD', 'Gene', '6392', (95, 99)) ('rs104894307', 'Mutation', 'rs104894307', (79, 90)) ('SDHD', 'Gene', (95, 99)) 72886 30871634 It was annotated in dbSNP and ClinVar databases as germline pathogenic variant associated with hereditary cancer-predisposing syndrome and pheochromocytomas/paragangliomas. ('paraganglioma', 'Phenotype', 'HP:0002668', (157, 170)) ('associated', 'Reg', (79, 89)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (139, 171)) ('variant', 'Var', (71, 78)) ('glioma', 'Phenotype', 'HP:0009733', (164, 170)) ('paragangliomas', 'Phenotype', 'HP:0002668', (157, 171)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (139, 156)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (139, 155)) ('hereditary cancer', 'Disease', 'MESH:D009369', (95, 112)) ('pheochromocytomas/paragangliomas', 'Disease', (139, 171)) ('hereditary cancer', 'Disease', (95, 112)) ('cancer', 'Phenotype', 'HP:0002664', (106, 112)) 72887 30871634 This somatic variant was also described as pathogenic in sporadic paraganglioma. ('paraganglioma', 'Disease', 'MESH:D010235', (66, 79)) ('paraganglioma', 'Phenotype', 'HP:0002668', (66, 79)) ('variant', 'Var', (13, 20)) ('glioma', 'Phenotype', 'HP:0009733', (73, 79)) ('paraganglioma', 'Disease', (66, 79)) 72888 30871634 We also observed somatic variants in several known cancer-associated genes (for example, JAG1, PRDM2, PRDM8, SETD2, ASPM, ZIC, GRIK1, etc. ('JAG1', 'Gene', '101093427', (89, 93)) ('variants', 'Var', (25, 33)) ('PRDM2', 'Gene', (95, 100)) ('PRDM8', 'Gene', (102, 107)) ('PRDM8', 'Gene', '102902518', (102, 107)) ('JAG1', 'Gene', (89, 93)) ('cancer', 'Phenotype', 'HP:0002664', (51, 57)) ('SETD2', 'Gene', (109, 114)) ('ASPM', 'Gene', (116, 120)) ('PRDM2', 'Gene', '101082169', (95, 100)) ('ASPM', 'Gene', '493695', (116, 120)) ('cancer', 'Disease', (51, 57)) ('cancer', 'Disease', 'MESH:D009369', (51, 57)) 72890 30871634 These variants have low AF values (5-10%) occurring in low fraction of cells (10-20%), but they may represent driver events. ('low AF', 'Disease', (20, 26)) ('low AF', 'Disease', 'MESH:D009800', (20, 26)) ('variants', 'Var', (6, 14)) 72895 30871634 These variants were characterized by high conservation scores (PhastCons) and had an allele frequency less than 0.01% in 1000 Genomes Project, ESP 6500, and ExAC databases. ('ESP', 'Gene', (143, 146)) ('ESP', 'Gene', '148713', (143, 146)) ('variants', 'Var', (6, 14)) 72896 30871634 In high mutated cancer, the ML was considered as a prognostic factor of prolonged survival with immune checkpoint inhibitors. ('cancer', 'Disease', (16, 22)) ('high mutated', 'Var', (3, 15)) ('cancer', 'Disease', 'MESH:D009369', (16, 22)) ('cancer', 'Phenotype', 'HP:0002664', (16, 22)) 72904 30871634 Paragangliomas/pheochromocytomas can be caused by germline and somatic variants in at least 42 known genes. ('variants', 'Var', (71, 79)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (15, 32)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (15, 31)) ('glioma', 'Phenotype', 'HP:0009733', (7, 13)) ('caused by', 'Reg', (40, 49)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (0, 14)) ('Paragangliomas/pheochromocytomas', 'Disease', (0, 32)) ('Paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (0, 32)) 72905 30871634 Potential driver somatic variants were found in SDHD (Pat103) and TP53 (Pat103 and Pat104) genes. ('TP53', 'Gene', '7157', (66, 70)) ('TP53', 'Gene', (66, 70)) ('Pat103', 'Var', (72, 78)) ('Pat104', 'Var', (83, 89)) ('SDHD', 'Gene', '6392', (48, 52)) ('SDHD', 'Gene', (48, 52)) ('Pat103', 'Var', (54, 60)) 72906 30871634 Likely pathogenic variants were revealed in EPAS1 (HIF2A) (Pat104) and SETD2 (Pat105) genes, and no somatic variants were observed in other known genes. ('EPAS1', 'Gene', '2034', (44, 49)) ('EPAS1', 'Gene', (44, 49)) ('SETD2', 'Gene', (71, 76)) ('variants', 'Var', (18, 26)) ('HIF2A', 'Gene', '2034', (51, 56)) ('HIF2A', 'Gene', (51, 56)) ('pathogenic', 'Reg', (7, 17)) 72909 30871634 Two variants were observed in SDHB gene in different patients (Pat101 and Pat102): a novel missense variant NM_003000.2: c.463C > A, p.Pro155Thr (chr1: 17,354,321) and a nonsense high-impact variant NM_003000.2: c.136C > T, p.Arg46* (chr1: 17,371,320, rs74315370). ('NM_003000.2: c.463C > A', 'Var', (108, 131)) ('p.Arg46*', 'Mutation', 'p.R46*', (224, 232)) ('NM_003000.2: c.136C > T', 'Mutation', 'rs74315370', (199, 222)) ('patients', 'Species', '9606', (53, 61)) ('NM_003000.2: c.463C > A', 'Mutation', 'rs121913472', (108, 131)) ('rs74315370', 'Mutation', 'rs74315370', (252, 262)) ('p.Pro155Thr', 'Var', (133, 144)) ('SDHB', 'Gene', '6390', (30, 34)) ('p.Arg46*', 'Var', (224, 232)) ('SDHB', 'Gene', (30, 34)) ('p.Pro155Thr', 'Mutation', 'rs121913472', (133, 144)) 72911 30871634 Notably, this variant has been reported in patients with aggressive extra-adrenal paraganglioma in the chest and CBT and has been considered as a high-risk factor for malignancy or recurrence of paragangliomas/pheochromocytomas. ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('reported', 'Reg', (31, 39)) ('paragangliomas', 'Phenotype', 'HP:0002668', (195, 209)) ('glioma', 'Phenotype', 'HP:0009733', (89, 95)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (210, 227)) ('patients', 'Species', '9606', (43, 51)) ('glioma', 'Phenotype', 'HP:0009733', (202, 208)) ('paraganglioma', 'Phenotype', 'HP:0002668', (195, 208)) ('aggressive extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (57, 95)) ('malignancy', 'Disease', 'MESH:D009369', (167, 177)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (195, 227)) ('aggressive extra-adrenal paraganglioma', 'Disease', (57, 95)) ('paragangliomas/pheochromocytomas', 'Disease', (195, 227)) ('malignancy', 'Disease', (167, 177)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (210, 226)) ('variant', 'Var', (14, 21)) 72913 30871634 The variant NM_003001.3: c.149G > A, p.Arg50His (chr1: 161,298,257, rs769177037) in SDHC was also found in Pat102. ('rs769177037', 'Mutation', 'rs769177037', (68, 79)) ('Pat102', 'Var', (107, 113)) ('SDHC', 'Gene', '6391', (84, 88)) ('p.Arg50His', 'Var', (37, 47)) ('c.149G > A', 'Var', (25, 35)) ('NM_003001.3: c.149G > A', 'Mutation', 'rs769177037', (12, 35)) ('rs769177037', 'Var', (68, 79)) ('SDHC', 'Gene', (84, 88)) ('p.Arg50His', 'Mutation', 'rs769177037', (37, 47)) 72914 30871634 Germline variants in SDHC are more rarely associated with the development of paragangliomas/pheochromocytomas than variants in SDHB or SDHD. ('variants', 'Var', (116, 124)) ('SDHB', 'Gene', (128, 132)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('paragangliomas', 'Phenotype', 'HP:0002668', (78, 92)) ('SDHC', 'Gene', (21, 25)) ('associated with', 'Reg', (42, 57)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (78, 110)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (93, 110)) ('paragangliomas/pheochromocytomas', 'Disease', (78, 110)) ('SDHC', 'Gene', '6391', (21, 25)) ('SDHD', 'Gene', (136, 140)) ('SDHD', 'Gene', '6392', (136, 140)) ('variants', 'Var', (9, 17)) ('SDHB', 'Gene', '6390', (128, 132)) ('glioma', 'Phenotype', 'HP:0009733', (85, 91)) ('paraganglioma', 'Phenotype', 'HP:0002668', (78, 91)) 72916 30871634 In this particular case, it seems that the main driver is the pathogenic germline variant in SDHB gene. ('germline variant', 'Var', (73, 89)) ('pathogenic', 'Reg', (62, 72)) ('SDHB', 'Gene', '6390', (93, 97)) ('SDHB', 'Gene', (93, 97)) 72917 30871634 The germline variant NM_003002.3: c.305A > G, p.His102Arg (chr11: 111,959,726, rs104894302) in SDHD was identified in two patients - Pat100 and Pat104. ('p.His102Arg', 'Var', (46, 57)) ('SDHD', 'Gene', '6392', (95, 99)) ('rs104894302', 'Mutation', 'rs104894302', (79, 90)) ('patients', 'Species', '9606', (122, 130)) ('SDHD', 'Gene', (95, 99)) ('p.His102Arg', 'Mutation', 'rs104894302', (46, 57)) ('rs104894302', 'Var', (79, 90)) ('NM_003002.3: c.305A > G', 'Mutation', 'rs104894302', (21, 44)) 72918 30871634 This variant is found in dbSNP and ClinVar databases as a pathogenic germline variant associated with hereditary cancer-predisposing syndrome, paragangliomas/pheochromocytomas, gastric stromal sarcoma, and Cowden syndrome 3. ('cancer', 'Phenotype', 'HP:0002664', (113, 119)) ('paragangliomas', 'Phenotype', 'HP:0002668', (143, 157)) ('paraganglioma', 'Phenotype', 'HP:0002668', (143, 156)) ('associated', 'Reg', (86, 96)) ('gastric stromal sarcoma', 'Disease', (177, 200)) ('variant', 'Var', (5, 12)) ('Cowden syndrome', 'Disease', 'MESH:D006223', (206, 221)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (143, 175)) ('paragangliomas/pheochromocytomas', 'Disease', (143, 175)) ('hereditary cancer', 'Disease', 'MESH:D009369', (102, 119)) ('Cowden syndrome', 'Disease', (206, 221)) ('sarcoma', 'Phenotype', 'HP:0100242', (193, 200)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (158, 174)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (158, 175)) ('hereditary cancer', 'Disease', (102, 119)) ('gastric stromal sarcoma', 'Disease', 'MESH:C564650', (177, 200)) ('glioma', 'Phenotype', 'HP:0009733', (150, 156)) 72920 30871634 In this patient (Pat104), we also found pathogenic and likely pathogenic somatic variants in TP53 gene. ('TP53', 'Gene', '7157', (93, 97)) ('TP53', 'Gene', (93, 97)) ('pathogenic', 'Reg', (40, 50)) ('patient', 'Species', '9606', (8, 15)) ('variants', 'Var', (81, 89)) 72921 30871634 One patient (Pat103) carried the germline variant NM_020975.4: c.1946C > T, p.Ser649Leu (chr10: 43,609,994, rs148935214) in the proto-oncogene RET. ('NM_020975.4: c.1946C > T', 'Mutation', 'rs148935214', (50, 74)) ('p.Ser649Leu', 'Var', (76, 87)) ('rs148935214', 'Var', (108, 119)) ('rs148935214', 'Mutation', 'rs148935214', (108, 119)) ('RET', 'Gene', (143, 146)) ('c.1946C > T', 'Var', (63, 74)) ('patient', 'Species', '9606', (4, 11)) ('p.Ser649Leu', 'Mutation', 'rs148935214', (76, 87)) ('RET', 'Gene', '5979', (143, 146)) 72923 30871634 In this patient, we also identified pathogenic and likely pathogenic somatic variants in TP53 gene (NM_000546.5: c.842A > T, p.Asp281Val (chr17: 7,577,096, rs587781525) and NM_000546.5: c.A170A > G, p. Asp57Gly (chr17: 7,579,517) that are the same in Pat104. ('rs587781525', 'Mutation', 'rs587781525', (156, 167)) ('TP53', 'Gene', '7157', (89, 93)) ('p.Asp281Val', 'Mutation', 'rs587781525', (125, 136)) ('TP53', 'Gene', (89, 93)) ('pathogenic', 'CPA', (58, 68)) ('NM_000546.5', 'Var', (173, 184)) ('pathogenic', 'Reg', (36, 46)) ('NM_000546.5: c.A170A > G', 'Mutation', 'rs1442824382', (173, 197)) ('Asp57Gly', 'Var', (202, 210)) ('patient', 'Species', '9606', (8, 15)) ('Asp57Gly', 'SUBSTITUTION', 'None', (202, 210)) ('NM_000546.5: c.842A > T', 'Mutation', 'rs587781525', (100, 123)) 72925 30871634 However, this patient was characterized by at least two somatic variants in CBT in one known CBT-causative gene - SETD2. ('patient', 'Species', '9606', (14, 21)) ('CBT', 'Gene', (76, 79)) ('variants', 'Var', (64, 72)) 72927 30871634 Mutations in SETD2 are found in many tumors, including neoplasms of the central nervous system. ('neoplasms of the central nervous system', 'Disease', 'MESH:D016543', (55, 94)) ('tumors', 'Phenotype', 'HP:0002664', (37, 43)) ('neoplasms of the central nervous system', 'Disease', (55, 94)) ('neoplasms of the central nervous system', 'Phenotype', 'HP:0100006', (55, 94)) ('found', 'Reg', (23, 28)) ('neoplasm', 'Phenotype', 'HP:0002664', (55, 63)) ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('Mutations', 'Var', (0, 9)) ('SETD2', 'Gene', (13, 18)) ('tumors', 'Disease', (37, 43)) ('neoplasms', 'Phenotype', 'HP:0002664', (55, 64)) ('tumors', 'Disease', 'MESH:D009369', (37, 43)) 72929 30871634 The AVENIO ctDNA Surveillance Kit targets frequently mutated regions across 197 genes and has been optimized for monitoring of ML in lung and colorectal cancers. ('colorectal cancer', 'Phenotype', 'HP:0003003', (142, 159)) ('mutated', 'Var', (53, 60)) ('cancer', 'Phenotype', 'HP:0002664', (153, 159)) ('colorectal cancers', 'Disease', 'MESH:D015179', (142, 160)) ('cancers', 'Phenotype', 'HP:0002664', (153, 160)) ('colorectal cancers', 'Disease', (142, 160)) 73025 29623478 Continued tumor reduction of metastatic pheochromocytoma/paraganglioma harboring succinate dehydrogenase subunit B mutations with cyclical chemotherapy Patients harboring germline mutations in the succinate dehydrogenase complex subunit B (SDHB) gene present with pheochromocytomas and paragangliomas (PPGL) that are more likely malignant and clinically aggressive. ('paraganglioma', 'Phenotype', 'HP:0002668', (286, 299)) ('paragangliomas', 'Phenotype', 'HP:0002668', (286, 300)) ('succinate dehydrogenase complex subunit B', 'Gene', (197, 238)) ('succinate dehydrogenase complex subunit B', 'Gene', '6390', (197, 238)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (264, 281)) ('Patients', 'Species', '9606', (152, 160)) ('tumor', 'Disease', (10, 15)) ('tumor', 'Disease', 'MESH:D009369', (10, 15)) ('paraganglioma', 'Disease', (57, 70)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (264, 280)) ('paraganglioma', 'Disease', 'MESH:D010235', (57, 70)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (40, 56)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (264, 300)) ('SDHB', 'Gene', '6390', (240, 244)) ('paraganglioma', 'Disease', (286, 299)) ('pheochromocytoma', 'Disease', (264, 280)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (264, 280)) ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('paraganglioma', 'Disease', 'MESH:D010235', (286, 299)) ('mutations', 'Var', (115, 124)) ('pheochromocytoma', 'Disease', (40, 56)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (40, 56)) ('reduction', 'NegReg', (16, 25)) ('paraganglioma', 'Phenotype', 'HP:0002668', (57, 70)) ('SDHB', 'Gene', (240, 244)) 73027 29623478 Twelve metastatic PPGL patients harboring SDHB mutations/polymorphisms with undetectable SDHB immunostaining were treated with CVD. ('SDHB', 'Gene', (42, 46)) ('patients', 'Species', '9606', (23, 31)) ('SDHB', 'Gene', '6390', (89, 93)) ('mutations/polymorphisms', 'Var', (47, 70)) ('SDHB', 'Gene', '6390', (42, 46)) ('SDHB', 'Gene', (89, 93)) 73045 29623478 In contrast to other hereditary PPGL syndromes, SDHB mutation carriers are more likely to present with clinical symptoms and biochemical evidence of elevated metanephrines and the novel biomarker plasma methoxytyramine, the O-methylated metabolite of dopamine [Zelinka 2007; Eisenhofer 2012]. ('dopamine', 'Chemical', 'MESH:D004298', (251, 259)) ('elevated', 'PosReg', (149, 157)) ('mutation', 'Var', (53, 61)) ('metanephrines', 'Chemical', 'MESH:D008676', (158, 171)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (203, 218)) ('SDHB', 'Gene', '6390', (48, 52)) ('metanephrines', 'MPA', (158, 171)) ('SDHB', 'Gene', (48, 52)) 73046 29623478 Additionally, the rate of metastases is much higher in patients with germline SDHB mutations. ('mutations', 'Var', (83, 92)) ('SDHB', 'Gene', '6390', (78, 82)) ('SDHB', 'Gene', (78, 82)) ('metastases', 'Disease', (26, 36)) ('patients', 'Species', '9606', (55, 63)) ('higher', 'PosReg', (45, 51)) ('metastases', 'Disease', 'MESH:D009362', (26, 36)) 73049 29623478 Mutations in the SDHB gene have been found in families with abdominal, pelvic, and thoracic PPGLs. ('thoracic PPGLs', 'Disease', (83, 97)) ('PPGLs', 'Chemical', '-', (92, 97)) ('abdominal', 'Disease', (60, 69)) ('found', 'Reg', (37, 42)) ('SDHB', 'Gene', '6390', (17, 21)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (17, 21)) ('pelvic', 'Disease', (71, 77)) 73050 29623478 SDHB mutation carriers develop disease early in life and are more likely to develop malignant PPGLs as well as additional tumors (renal cell carcinoma, gastrointestinal stromal tumors, and rarely, pituitary tumors). ('tumors', 'Disease', 'MESH:D009369', (122, 128)) ('pituitary tumors', 'Disease', 'MESH:D010911', (197, 213)) ('tumor', 'Phenotype', 'HP:0002664', (207, 212)) ('tumors', 'Disease', (207, 213)) ('tumors', 'Disease', 'MESH:D009369', (177, 183)) ('malignant', 'CPA', (84, 93)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (152, 183)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (152, 183)) ('SDHB', 'Gene', (0, 4)) ('renal cell carcinoma', 'Disease', (130, 150)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (130, 150)) ('tumors', 'Disease', 'MESH:D009369', (207, 213)) ('tumors', 'Phenotype', 'HP:0002664', (122, 128)) ('pituitary tumors', 'Disease', (197, 213)) ('carcinoma', 'Phenotype', 'HP:0030731', (141, 150)) ('gastrointestinal stromal tumors', 'Disease', (152, 183)) ('tumor', 'Phenotype', 'HP:0002664', (122, 127)) ('PPGLs', 'Chemical', '-', (94, 99)) ('tumors', 'Phenotype', 'HP:0002664', (177, 183)) ('tumors', 'Disease', (122, 128)) ('develop', 'PosReg', (76, 83)) ('SDHB', 'Gene', '6390', (0, 4)) ('tumor', 'Phenotype', 'HP:0002664', (177, 182)) ('tumors', 'Phenotype', 'HP:0002664', (207, 213)) ('tumors', 'Disease', (177, 183)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (130, 150)) ('mutation', 'Var', (5, 13)) 73058 29623478 Since it is known that patients with PPGL harboring SDHB mutations have an earlier presentation of metastatic disease and a worse prognosis, we report the outcome of 12 patients with SDHB mutations/polymorphisms or lacking SDHB expression and metastatic PPGL treated with CVD at a single institution. ('SDHB', 'Gene', (183, 187)) ('SDHB', 'Gene', (52, 56)) ('expression', 'MPA', (228, 238)) ('patients', 'Species', '9606', (169, 177)) ('metastatic disease', 'Disease', (99, 117)) ('patients', 'Species', '9606', (23, 31)) ('mutations', 'Var', (57, 66)) ('mutations/polymorphisms', 'Var', (188, 211)) ('SDHB', 'Gene', '6390', (223, 227)) ('SDHB', 'Gene', '6390', (52, 56)) ('SDHB', 'Gene', (223, 227)) ('SDHB', 'Gene', '6390', (183, 187)) ('lacking', 'NegReg', (215, 222)) 73069 29623478 All had a diagnosis of PPGL and evidence of a mutation/polymorphism in the SDHB gene (SDHB expression was not detectable in the patient with a polymorphism) (Figure 1). ('SDHB', 'Gene', (86, 90)) ('PPGL', 'Disease', (23, 27)) ('SDHB', 'Gene', '6390', (75, 79)) ('SDHB', 'Gene', (75, 79)) ('patient', 'Species', '9606', (128, 135)) ('SDHB', 'Gene', '6390', (86, 90)) ('mutation/polymorphism', 'Var', (46, 67)) 73075 29623478 In our experience [18F]-FDG PET imaging has been very sensitive in detecting metastases in patients with SDHB mutations, identifying both visceral as well as osseous sites of disease. ('patients', 'Species', '9606', (91, 99)) ('mutations', 'Var', (110, 119)) ('SDHB', 'Gene', '6390', (105, 109)) ('metastases', 'Disease', (77, 87)) ('SDHB', 'Gene', (105, 109)) ('metastases', 'Disease', 'MESH:D009362', (77, 87)) 73080 29623478 It is important to note that we cannot present a comparison to patients whose tumors do not harbor SDHB mutations, as the majority of patients treated during this period of time harbored SDHB mutations, which is a reflection of our referral pattern and natural, aggressive clinical course of SDHB-related PPGL. ('SDHB', 'Gene', '6390', (187, 191)) ('tumors', 'Disease', (78, 84)) ('SDHB', 'Gene', (292, 296)) ('harbored', 'Reg', (178, 186)) ('SDHB', 'Gene', (187, 191)) ('tumors', 'Disease', 'MESH:D009369', (78, 84)) ('tumors', 'Phenotype', 'HP:0002664', (78, 84)) ('patients', 'Species', '9606', (134, 142)) ('tumor', 'Phenotype', 'HP:0002664', (78, 83)) ('SDHB', 'Gene', '6390', (99, 103)) ('SDHB', 'Gene', (99, 103)) ('patients', 'Species', '9606', (63, 71)) ('SDHB', 'Gene', '6390', (292, 296)) ('mutations', 'Var', (192, 201)) 73081 29623478 Prior to the availability of [18F]-FDG PET/CT imaging and routine testing for SDHB mutation status, we observed a gradual reduction in tumor size as well as serum and urinary metanephrines and catecholamines in patients receiving chemotherapy over several years. ('catecholamines', 'Chemical', 'MESH:D002395', (193, 207)) ('patients', 'Species', '9606', (211, 219)) ('SDHB', 'Gene', '6390', (78, 82)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('tumor', 'Disease', (135, 140)) ('tumor', 'Disease', 'MESH:D009369', (135, 140)) ('mutation', 'Var', (83, 91)) ('SDHB', 'Gene', (78, 82)) ('reduction', 'NegReg', (122, 131)) ('metanephrines', 'Chemical', 'MESH:D008676', (175, 188)) 73087 29623478 Why resistance develops slowly may be explained if tumors harboring SDHB mutations are "genetically simpler" and less likely to harbor intrinsically resistant clone(s). ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('SDHB', 'Gene', '6390', (68, 72)) ('tumors', 'Disease', 'MESH:D009369', (51, 57)) ('tumors', 'Disease', (51, 57)) ('SDHB', 'Gene', (68, 72)) ('tumors', 'Phenotype', 'HP:0002664', (51, 57)) ('mutations', 'Var', (73, 82)) 73093 29623478 The standard therapeutic options often available for these patients - palliative radiation therapy and [131I]-MIBG - may also contribute to such long-term complications. ('MIBG', 'Chemical', 'MESH:D019797', (110, 114)) ('patients', 'Species', '9606', (59, 67)) ('contribute', 'Reg', (126, 136)) ('[131I]-MIBG -', 'Var', (103, 116)) 73094 29623478 In summary, we report a high level of activity of CVD chemotherapy in patients with metastatic PPGL and mutations/polymorphisms in the SDHB gene. ('patients', 'Species', '9606', (70, 78)) ('activity', 'MPA', (38, 46)) ('SDHB', 'Gene', '6390', (135, 139)) ('SDHB', 'Gene', (135, 139)) ('metastatic PPGL', 'Disease', (84, 99)) ('mutations/polymorphisms', 'Var', (104, 127)) 73122 29201372 NF1 is an autosomal dominant disorder caused by a mutation in the NF1 tumor suppressor gene. ('autosomal dominant disorder', 'Disease', (10, 37)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('tumor', 'Disease', (70, 75)) ('NF1', 'Gene', (66, 69)) ('caused by', 'Reg', (38, 47)) ('NF1', 'Gene', (0, 3)) ('autosomal dominant disorder', 'Disease', 'MESH:D030342', (10, 37)) ('NF1', 'Gene', '4763', (66, 69)) ('NF1', 'Gene', '4763', (0, 3)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) ('mutation', 'Var', (50, 58)) 73129 29201372 In spite of elevated catecholamine production, 24% of NF1 patients with PPGLs will remain without catecholamine-associated symptoms and 61%-80% will not have hypertension, despite having similarly elevated plasma and urine metanephrine concentrations compared to symptomatic patients. ('elevated', 'PosReg', (12, 20)) ('patients', 'Species', '9606', (58, 66)) ('elevated', 'PosReg', (197, 205)) ('metanephrine', 'Chemical', 'MESH:D008676', (223, 235)) ('hypertension', 'Disease', 'MESH:D006973', (158, 170)) ('NF1', 'Gene', '4763', (54, 57)) ('catecholamine', 'Chemical', 'MESH:D002395', (21, 34)) ('NF1', 'Gene', (54, 57)) ('hypertension', 'Disease', (158, 170)) ('elevated catecholamine production', 'Phenotype', 'HP:0003334', (12, 45)) ('PPGLs', 'Var', (72, 77)) ('hypertension', 'Phenotype', 'HP:0000822', (158, 170)) ('catecholamine production', 'MPA', (21, 45)) ('patients', 'Species', '9606', (275, 283)) ('PPGLs', 'Chemical', '-', (72, 77)) ('catecholamine', 'Chemical', 'MESH:D002395', (98, 111)) 73130 29201372 Nearly one-third of patients with PPGLs have a disease-causing germline mutation, with common genetic syndrome associations to include: NF1, von Hippel-Lindau (VHL), and multiple endocrine neoplasia (MEN) type 2A and type 2B. ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (170, 198)) ('von Hippel-Lindau', 'Gene', (141, 158)) ('PPGLs', 'Chemical', '-', (34, 39)) ('germline mutation', 'Var', (63, 80)) ('NF1', 'Gene', (136, 139)) ('MEN', 'Species', '9606', (200, 203)) ('multiple endocrine neoplasia', 'Disease', (170, 198)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (179, 198)) ('disease-causing', 'Reg', (47, 62)) ('patients', 'Species', '9606', (20, 28)) ('VHL', 'Disease', (160, 163)) ('von Hippel-Lindau', 'Gene', '7428', (141, 158)) ('genetic syndrome', 'Disease', (94, 110)) ('type 2A', 'Disease', (205, 212)) ('neoplasia', 'Phenotype', 'HP:0002664', (189, 198)) ('genetic syndrome', 'Disease', 'MESH:D030342', (94, 110)) ('PPGLs', 'Gene', (34, 39)) ('NF1', 'Gene', '4763', (136, 139)) ('VHL', 'Disease', 'MESH:D006623', (160, 163)) 73188 28458869 Genetic mutations within the SDHB and SDHD units are associated with increased risk for EAPs. ('SDHB', 'Gene', '6390', (29, 33)) ('SDHB', 'Gene', (29, 33)) ('associated', 'Reg', (53, 63)) ('SDHD', 'Gene', (38, 42)) ('SDHD', 'Gene', '6392', (38, 42)) ('Genetic mutations', 'Var', (0, 17)) ('EAPs', 'Disease', (88, 92)) 73189 28458869 It has also been reported that the incidence and prevalence of malignant paragangliomas are higher in patients with SDHB mutation. ('higher', 'PosReg', (92, 98)) ('malignant paragangliomas', 'Disease', (63, 87)) ('patients', 'Species', '9606', (102, 110)) ('SDHB', 'Gene', '6390', (116, 120)) ('paragangliomas', 'Phenotype', 'HP:0002668', (73, 87)) ('SDHB', 'Gene', (116, 120)) ('mutation', 'Var', (121, 129)) ('paraganglioma', 'Phenotype', 'HP:0002668', (73, 86)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (63, 87)) 73194 19075037 Mediastinal paragangliomas: association with mutations in the succinate dehydrogenase genes and aggressive behavior Extra-adrenal pheochromocytomas, otherwise known as paragangliomas (PGLs), account for about 20% of catecholamine-producing tumors. ('Mediastinal paragangliomas', 'Disease', (0, 26)) ('paragangliomas', 'Disease', 'MESH:D010235', (168, 182)) ('succinate dehydrogenase', 'Gene', '6390', (62, 85)) ('paragangliomas', 'Phenotype', 'HP:0002668', (168, 182)) ('tumors', 'Disease', (240, 246)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (130, 147)) ('Extra-adrenal pheochromocytomas', 'Phenotype', 'HP:0006737', (116, 147)) ('paragangliomas', 'Disease', (12, 26)) ('tumors', 'Disease', 'MESH:D009369', (240, 246)) ('paragangliomas', 'Disease', (168, 182)) ('catecholamine', 'Chemical', 'MESH:D002395', (216, 229)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (122, 147)) ('succinate dehydrogenase', 'Gene', (62, 85)) ('association', 'Interaction', (28, 39)) ('Mediastinal paragangliomas', 'Disease', 'MESH:D008480', (0, 26)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (130, 146)) ('paragangliomas', 'Disease', 'MESH:D010235', (12, 26)) ('paragangliomas', 'Phenotype', 'HP:0002668', (12, 26)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (96, 115)) ('tumor', 'Phenotype', 'HP:0002664', (240, 245)) ('Extra-adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (116, 147)) ('mutations', 'Var', (45, 54)) ('tumors', 'Phenotype', 'HP:0002664', (240, 246)) ('Extra-adrenal pheochromocytomas', 'Disease', (116, 147)) ('aggressive behavior', 'CPA', (96, 115)) ('PGLs', 'Phenotype', 'HP:0002668', (184, 188)) 73195 19075037 Catecholamine excess and mutations in the genes encoding succinate dehydrogenase subunits (SDHx) are frequently found in patients with PGLs. ('PGLs', 'Phenotype', 'HP:0002668', (135, 139)) ('mutations', 'Var', (25, 34)) ('Catecholamine', 'Chemical', 'MESH:D002395', (0, 13)) ('Catecholamine excess', 'Phenotype', 'HP:0003334', (0, 20)) ('SDHx', 'Chemical', '-', (91, 95)) ('found', 'Reg', (112, 117)) ('SDHx', 'Gene', (91, 95)) ('Catecholamine excess', 'MPA', (0, 20)) ('PGLs', 'Disease', (135, 139)) ('succinate dehydrogenase', 'Gene', '6390', (57, 80)) ('patients', 'Species', '9606', (121, 129)) ('succinate dehydrogenase', 'Gene', (57, 80)) 73197 19075037 We hypothesized that most mediastinal PGLs are associated with germ line SDHx mutations, norepinephrine and/or dopamine excess, and aggressive behavior. ('aggressive behavior', 'Phenotype', 'HP:0000718', (132, 151)) ('norepinephrine and/or', 'MPA', (89, 110)) ('norepinephrine', 'Chemical', 'MESH:D009638', (89, 103)) ('PGLs', 'Phenotype', 'HP:0002668', (38, 42)) ('dopamine', 'Chemical', 'MESH:D004298', (111, 119)) ('mutations', 'Var', (78, 87)) ('SDHx', 'Gene', (73, 77)) ('mediastinal PGLs', 'Disease', (26, 42)) ('SDHx', 'Chemical', '-', (73, 77)) ('associated', 'Reg', (47, 57)) ('aggressive behavior', 'CPA', (132, 151)) ('dopamine excess', 'Phenotype', 'HP:0012655', (111, 126)) 73199 19075037 All ten primary mediastinal PGL patients had germ line SDHx mutations, six in SDHB, and four in SDHD genes. ('patients', 'Species', '9606', (32, 40)) ('SDHx', 'Gene', (55, 59)) ('primary mediastinal PGL', 'Disease', (8, 31)) ('SDHB', 'Gene', '6390', (78, 82)) ('SDHB', 'Gene', (78, 82)) ('SDHD', 'Gene', '6392', (96, 100)) ('SDHx', 'Chemical', '-', (55, 59)) ('mutations', 'Var', (60, 69)) ('SDHD', 'Gene', (96, 100)) 73203 19075037 We conclude that mediastinal PGLs are strongly associated with SDHB and SDHD gene mutations, noradrenergic phenotype, and aggressive behavior. ('SDHB', 'Gene', (63, 67)) ('mediastinal PGLs', 'Disease', (17, 33)) ('SDHD', 'Gene', (72, 76)) ('mutations', 'Var', (82, 91)) ('SDHB', 'Gene', '6390', (63, 67)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (122, 141)) ('associated', 'Reg', (47, 57)) ('SDHD', 'Gene', '6392', (72, 76)) ('PGLs', 'Phenotype', 'HP:0002668', (29, 33)) 73204 19075037 The present data suggest that all patients with mediastinal PGLs should be screened for SDHx gene mutations, regardless of age. ('PGLs', 'Phenotype', 'HP:0002668', (60, 64)) ('SDHx', 'Gene', (88, 92)) ('SDHx', 'Chemical', '-', (88, 92)) ('mutations', 'Var', (98, 107)) ('patients', 'Species', '9606', (34, 42)) ('screened', 'Reg', (75, 83)) 73207 19075037 By contrast, mutations in the genes encoding succinate dehydrogenase (SDH) subunits B, C, and D cause extra-adrenal PGLs associated with familial PGL syndromes PGL4, PGL3, and PGL1 respectively. ('PGL3', 'Gene', (166, 170)) ('PGL4', 'Gene', (160, 164)) ('PGL4', 'Gene', '6390', (160, 164)) ('extra-adrenal PGLs', 'Disease', (102, 120)) ('PGLs', 'Phenotype', 'HP:0002668', (116, 120)) ('associated', 'Reg', (121, 131)) ('succinate dehydrogenase', 'Gene', '6390', (45, 68)) ('SDH', 'Gene', '6390', (70, 73)) ('PGL1', 'Gene', (176, 180)) ('cause', 'Reg', (96, 101)) ('succinate dehydrogenase', 'Gene', (45, 68)) ('familial PGL syndromes', 'Disease', (137, 159)) ('SDH', 'Gene', (70, 73)) ('mutations', 'Var', (13, 22)) ('PGL3', 'Gene', '6391', (166, 170)) 73208 19075037 Germ line SDHB mutations are mainly associated with abdominal PGLs having aggressive and malignant behavior. ('abdominal PGLs', 'Disease', (52, 66)) ('mutations', 'Var', (15, 24)) ('associated', 'Reg', (36, 46)) ('PGLs', 'Phenotype', 'HP:0002668', (62, 66)) ('SDHB', 'Gene', '6390', (10, 14)) ('SDHB', 'Gene', (10, 14)) 73209 19075037 By contrast, germ line SDHD mutation carriers are frequently diagnosed with benign and often non-functional head and neck PGLs and/or pheochromocytomas. ('pheochromocytomas', 'Disease', (134, 151)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (134, 151)) ('SDHD', 'Gene', '6392', (23, 27)) ('PGLs', 'Phenotype', 'HP:0002668', (122, 126)) ('SDHD', 'Gene', (23, 27)) ('mutation', 'Var', (28, 36)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (134, 151)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (134, 150)) 73211 19075037 PGLs caused by germ line SDHB mutations show hypersecretion of both norepinephrine and dopamine in 46% and nor-epinephrine alone in 41% of cases, whereas hypersecretion of norepinephrine appears to be most prevalent in SDHD-associated disease (; unpublished data Havekes). ('nor-epinephrine', 'Chemical', 'MESH:D009638', (107, 122)) ('dopamine', 'Chemical', 'MESH:D004298', (87, 95)) ('hypersecretion of norepinephrine', 'Phenotype', 'HP:0003345', (154, 186)) ('norepinephrine', 'Chemical', 'MESH:D009638', (68, 82)) ('PGLs', 'Phenotype', 'HP:0002668', (0, 4)) ('norepinephrine', 'Chemical', 'MESH:D009638', (172, 186)) ('SDHB', 'Gene', '6390', (25, 29)) ('mutations', 'Var', (30, 39)) ('SDHB', 'Gene', (25, 29)) ('SDHD', 'Gene', '6392', (219, 223)) ('SDHD', 'Gene', (219, 223)) ('hypersecretion of', 'MPA', (45, 62)) 73213 19075037 Based on the data for PGLs in other sites, we hypothesized that most mediastinal PGLs are associated with germ line SDHx mutations, norepinephrine and/or dopamine excess, and aggressive behavior. ('norepinephrine', 'Chemical', 'MESH:D009638', (132, 146)) ('mutations', 'Var', (121, 130)) ('dopamine excess', 'Phenotype', 'HP:0012655', (154, 169)) ('SDHx', 'Chemical', '-', (116, 120)) ('PGLs', 'Phenotype', 'HP:0002668', (22, 26)) ('PGLs', 'Phenotype', 'HP:0002668', (81, 85)) ('SDHx', 'Gene', (116, 120)) ('mediastinal PGLs', 'Disease', (69, 85)) ('associated', 'Reg', (90, 100)) ('aggressive behavior', 'CPA', (175, 194)) ('norepinephrine and/or', 'MPA', (132, 153)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (175, 194)) ('dopamine', 'Chemical', 'MESH:D004298', (154, 162)) 73214 19075037 We prospectively and retrospectively identified ten patients with mediastinal PGLs, screened them for mutations in SDHB and SDHD genes, characterized their biochemical features, and determined the prevalence of malignant disease in this cohort. ('SDHB', 'Gene', '6390', (115, 119)) ('PGLs', 'Phenotype', 'HP:0002668', (78, 82)) ('SDHD', 'Gene', '6392', (124, 128)) ('SDHB', 'Gene', (115, 119)) ('mediastinal PGLs', 'Disease', (66, 82)) ('mutations', 'Var', (102, 111)) ('malignant disease', 'Disease', 'MESH:D009369', (211, 228)) ('SDHD', 'Gene', (124, 128)) ('patients', 'Species', '9606', (52, 60)) ('malignant disease', 'Disease', (211, 228)) 73230 19075037 Genetic testing revealed an SDHB mutation (c.725G>A, p.Arg242His) and radiation therapy was started. ('p.Arg242His', 'Mutation', 'rs74315368', (53, 64)) ('p.Arg242His', 'Var', (53, 64)) ('revealed', 'Reg', (16, 24)) ('c.725G>A', 'Var', (43, 51)) ('c.725G>A', 'Mutation', 'rs74315368', (43, 51)) ('SDHB', 'Gene', '6390', (28, 32)) ('SDHB', 'Gene', (28, 32)) 73236 19075037 Genetic testing revealed an SDHB mutation (c.287G>A, p.Gly96Asp) at the junction of exons 3 and 4. ('revealed', 'Reg', (16, 24)) ('c.287G>A', 'Var', (43, 51)) ('p.Gly96Asp', 'Mutation', 'rs778952116', (53, 63)) ('SDHB', 'Gene', '6390', (28, 32)) ('c.287G>A', 'Mutation', 'rs778952116', (43, 51)) ('SDHB', 'Gene', (28, 32)) 73242 19075037 Genetic analysis revealed an SDHB mutation (c.136C>T, p.Arg46Stop). ('c.136C>T', 'Mutation', 'rs74315370', (44, 52)) ('SDHB', 'Gene', '6390', (29, 33)) ('p.Arg46Stop', 'Var', (54, 65)) ('revealed', 'Reg', (17, 25)) ('SDHB', 'Gene', (29, 33)) ('p.Arg46Stop', 'Mutation', 'rs74315370', (54, 65)) ('c.136C>T', 'Var', (44, 52)) 73250 19075037 Genetic analysis for germ line mutations revealed an SDHD mutation (c.170-1G>T, splice site mutation). ('c.170-1G>T', 'Var', (68, 78)) ('SDHD', 'Gene', (53, 57)) ('c.170-1G>T', 'Mutation', 'rs1306475361', (68, 78)) ('SDHD', 'Gene', '6392', (53, 57)) 73258 19075037 Genetic analysis revealed an SDHB mutation (c.137G>A, p.Arg46Gln). ('c.137G>A', 'Mutation', 'rs772551056', (44, 52)) ('SDHB', 'Gene', '6390', (29, 33)) ('p.Arg46Gln', 'Mutation', 'rs772551056', (54, 64)) ('revealed', 'Reg', (17, 25)) ('SDHB', 'Gene', (29, 33)) ('c.137G>A', 'Var', (44, 52)) ('p.Arg46Gln', 'Var', (54, 64)) 73271 19075037 Genetic analysis revealed an SDHD mutation (c.57delG, p.Leu20Cys-fs-Stop66), and some children have subsequently tested positive for this mutation. ('SDHD', 'Gene', '6392', (29, 33)) ('p.Leu20Cys', 'SUBSTITUTION', 'None', (54, 64)) ('c.57delG', 'Var', (44, 52)) ('children', 'Species', '9606', (86, 94)) ('positive', 'Reg', (120, 128)) ('SDHD', 'Gene', (29, 33)) ('c.57delG', 'Mutation', 'rs587776649', (44, 52)) ('p.Leu20Cys', 'Var', (54, 64)) ('revealed', 'Reg', (17, 25)) 73275 19075037 Although [123I]MIBG scintigraphy revealed no definite abnormalities, [18F]FDG PET and [111In]pentetreotide both showed uptake in the same area of the posterior mediastinum. ('[18F]FDG PET', 'Var', (69, 81)) ('MIBG', 'Chemical', 'MESH:D019797', (15, 19)) ('uptake', 'MPA', (119, 125)) 73279 19075037 Family history was negative for PGLs, but genetic testing revealed an SDHB mutation (c.136C>T, p.Arg46Stop). ('c.136C>T', 'Var', (85, 93)) ('SDHB', 'Gene', '6390', (70, 74)) ('PGLs', 'Phenotype', 'HP:0002668', (32, 36)) ('SDHB', 'Gene', (70, 74)) ('c.136C>T', 'Mutation', 'rs74315370', (85, 93)) ('p.Arg46Stop', 'Var', (95, 106)) ('p.Arg46Stop', 'Mutation', 'rs74315370', (95, 106)) 73289 19075037 Genetic analysis revealed an SDHD mutation (c.242C>T, p.Pro81Leu). ('SDHD', 'Gene', '6392', (29, 33)) ('SDHD', 'Gene', (29, 33)) ('revealed', 'Reg', (17, 25)) ('c.242C>T', 'Mutation', 'rs80338844', (44, 52)) ('p.Pro81Leu', 'Mutation', 'rs80338844', (54, 64)) ('c.242C>T', 'Var', (44, 52)) 73298 19075037 Subsequent genetic analysis revealed an SDHD gene mutation (c.274G>T, p.Asp92Tyr). ('SDHD', 'Gene', '6392', (40, 44)) ('p.Asp92Tyr', 'Mutation', 'rs80338845', (70, 80)) ('c.274G>T', 'Var', (60, 68)) ('SDHD', 'Gene', (40, 44)) ('revealed', 'Reg', (28, 36)) ('c.274G>T', 'Mutation', 'rs80338845', (60, 68)) 73299 19075037 Given the lack of symptoms, the reported low risk for malignant disease with SDHD mutations, and considerable risks of surgery, a watch-and-wait strategy was chosen. ('malignant disease', 'Disease', (54, 71)) ('SDHD', 'Gene', '6392', (77, 81)) ('SDHD', 'Gene', (77, 81)) ('mutations', 'Var', (82, 91)) ('malignant disease', 'Disease', 'MESH:D009369', (54, 71)) 73304 19075037 Genetic analysis revealed an SDHB mutation (c.286+2T>A, splice site mutation). ('SDHB', 'Gene', '6390', (29, 33)) ('c.286+2T>A', 'Var', (44, 54)) ('c.286+2T>A', 'Mutation', 'rs587781270', (44, 54)) ('revealed', 'Reg', (17, 25)) ('SDHB', 'Gene', (29, 33)) 73305 19075037 The major new finding in this report is that all ten patients with mediastinal PGLs were associated with germ line mutations in either SDHB or SDHD. ('associated', 'Reg', (89, 99)) ('SDHB', 'Gene', '6390', (135, 139)) ('mutations', 'Var', (115, 124)) ('patients', 'Species', '9606', (53, 61)) ('SDHB', 'Gene', (135, 139)) ('SDHD', 'Gene', (143, 147)) ('SDHD', 'Gene', '6392', (143, 147)) ('PGLs', 'Phenotype', 'HP:0002668', (79, 83)) ('mediastinal PGLs', 'Disease', (67, 83)) 73308 19075037 We conclude that all patients with mediastinal PGLs should be screened for germ line SDHx mutations, regardless of age. ('mutations', 'Var', (90, 99)) ('PGLs', 'Phenotype', 'HP:0002668', (47, 51)) ('SDHx', 'Gene', (85, 89)) ('SDHx', 'Chemical', '-', (85, 89)) ('patients', 'Species', '9606', (21, 29)) ('screened', 'Reg', (62, 70)) 73309 19075037 Carriers of the germ line SDHD mutations often present with multifocal head and neck PGLs. ('present', 'Reg', (47, 54)) ('mutations', 'Var', (31, 40)) ('PGLs', 'Phenotype', 'HP:0002668', (85, 89)) ('SDHD', 'Gene', (26, 30)) ('SDHD', 'Gene', '6392', (26, 30)) 73310 19075037 Germ line SDHB mutations predispose patients to extra-adrenal PGLs, often in the abdomen, and to metastatic disease in 30-50%. ('patients', 'Species', '9606', (36, 44)) ('mutations', 'Var', (15, 24)) ('metastatic', 'CPA', (97, 107)) ('PGLs', 'Phenotype', 'HP:0002668', (62, 66)) ('SDHB', 'Gene', '6390', (10, 14)) ('extra-adrenal PGLs', 'Disease', (48, 66)) ('SDHB', 'Gene', (10, 14)) ('predispose', 'Reg', (25, 35)) 73311 19075037 We reasoned that mediastinal PGLs might provide insight to how germ line SDHx mutation and anatomic location each contribute to their clinical behavior. ('mutation', 'Var', (78, 86)) ('contribute', 'Reg', (114, 124)) ('SDHx', 'Gene', (73, 77)) ('SDHx', 'Chemical', '-', (73, 77)) ('PGLs', 'Phenotype', 'HP:0002668', (29, 33)) 73314 19075037 Consequently, the presence of a mediastinal PGL may identify patients with aggressive PGL syndromes, both with germ line SDHB and SDHD mutations (Table 2). ('SDHB', 'Gene', (121, 125)) ('mutations', 'Var', (135, 144)) ('patients', 'Species', '9606', (61, 69)) ('aggressive PGL syndromes', 'Disease', (75, 99)) ('SDHD', 'Gene', (130, 134)) ('SDHD', 'Gene', '6392', (130, 134)) ('aggressive PGL syndromes', 'Disease', 'MESH:D010235', (75, 99)) ('SDHB', 'Gene', '6390', (121, 125)) 73315 19075037 In comparison, intra-abdominal PGLs are malignant in about a third of cases, particularly with SDHB mutations, and multifocal disease is present in 15-40% of cases. ('mutations', 'Var', (100, 109)) ('PGLs', 'Phenotype', 'HP:0002668', (31, 35)) ('intra-abdominal PGLs', 'Disease', (15, 35)) ('SDHB', 'Gene', '6390', (95, 99)) ('multifocal disease', 'Disease', (115, 133)) ('SDHB', 'Gene', (95, 99)) ('multifocal disease', 'Disease', 'None', (115, 133)) 73319 19075037 A convincing family history of PGL was present in only 30%, reinforcing the variable penetrance of germ line SDHx mutations. ('mutations', 'Var', (114, 123)) ('SDHx', 'Gene', (109, 113)) ('SDHx', 'Chemical', '-', (109, 113)) 73321 19075037 PGLs associated with germ line SDHB mutations often produce norepinephrine and/or dopamine. ('produce', 'Reg', (52, 59)) ('norepinephrine', 'MPA', (60, 74)) ('SDHB', 'Gene', (31, 35)) ('norepinephrine', 'Chemical', 'MESH:D009638', (60, 74)) ('mutations', 'Var', (36, 45)) ('dopamine', 'MPA', (82, 90)) ('PGLs', 'Phenotype', 'HP:0002668', (0, 4)) ('dopamine', 'Chemical', 'MESH:D004298', (82, 90)) ('SDHB', 'Gene', '6390', (31, 35)) 73327 19075037 We conclude that mediastinal PGLs tend to display a noradrenergic or dopaminergic biochemical phenotype, regardless of germ line SDHx mutation. ('SDHx', 'Gene', (129, 133)) ('noradrenergic', 'MPA', (52, 65)) ('SDHx', 'Chemical', '-', (129, 133)) ('dopamine', 'Chemical', 'MESH:D004298', (69, 77)) ('dopaminergic biochemical phenotype', 'MPA', (69, 103)) ('mutation', 'Var', (134, 142)) ('PGLs', 'Phenotype', 'HP:0002668', (29, 33)) 73337 19075037 In conclusion, mediastinal PGLs are frequently associated with germ line SDHx mutations, nor-epinephrine or dopamine production, aggressive disease, and multifocal tumors. ('tumor', 'Phenotype', 'HP:0002664', (164, 169)) ('dopamine', 'Chemical', 'MESH:D004298', (108, 116)) ('tumors', 'Phenotype', 'HP:0002664', (164, 170)) ('aggressive disease', 'Disease', 'MESH:D001523', (129, 147)) ('PGLs', 'Phenotype', 'HP:0002668', (27, 31)) ('mutations', 'Var', (78, 87)) ('multifocal tumors', 'Disease', (153, 170)) ('nor-epinephrine', 'Chemical', 'MESH:D009638', (89, 104)) ('aggressive disease', 'Disease', (129, 147)) ('SDHx', 'Gene', (73, 77)) ('nor-epinephrine or dopamine production', 'MPA', (89, 127)) ('multifocal tumors', 'Disease', 'None', (153, 170)) ('SDHx', 'Chemical', '-', (73, 77)) ('associated', 'Reg', (47, 57)) ('mediastinal PGLs', 'Disease', (15, 31)) 73338 19075037 All mediastinal PGLs should be screened for germ line SDHx mutations, regardless of age. ('PGLs', 'Phenotype', 'HP:0002668', (16, 20)) ('SDHx', 'Gene', (54, 58)) ('mutations', 'Var', (59, 68)) ('SDHx', 'Chemical', '-', (54, 58)) 73409 26330708 In addition, they suggest that the prevalence of familial and extra adrenal tumors in patients carrying germ-line mutations in PCC susceptibility genes may be as high as 50%. ('adrenal tumors', 'Disease', 'MESH:D000310', (68, 82)) ('mutations', 'Var', (114, 123)) ('PCC', 'Gene', (127, 130)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) ('adrenal tumors', 'Disease', (68, 82)) ('PCC', 'Phenotype', 'HP:0002666', (127, 130)) ('patients', 'Species', '9606', (86, 94)) 73457 26330708 The depolarizing agent, succinylcholine, has the potential for causing catecholamine surges from the muscle fasciculations that it produces which can mechanically compress the tumor, in addition to stimulation of the autonomic ganglia, both of which can be detrimental. ('tumor', 'Phenotype', 'HP:0002664', (176, 181)) ('tumor', 'Disease', (176, 181)) ('muscle fasciculations', 'Phenotype', 'HP:0002380', (101, 122)) ('succinylcholine', 'Var', (24, 39)) ('catecholamine surges', 'MPA', (71, 91)) ('catecholamine surges', 'Phenotype', 'HP:0003334', (71, 91)) ('catecholamine', 'Chemical', 'MESH:D002395', (71, 84)) ('compress', 'NegReg', (163, 171)) ('muscle fasciculations', 'Disease', 'MESH:D005207', (101, 122)) ('succinylcholine', 'Chemical', 'MESH:D013390', (24, 39)) ('muscle fasciculations', 'Disease', (101, 122)) ('tumor', 'Disease', 'MESH:D009369', (176, 181)) 73530 26236513 Subsequent genetic testing identified a likely pathogenic variant in SDHB, confirming a diagnosis of Hereditary Paraganglioma-Pheochromocytoma syndrome. ('SDHB', 'Gene', (69, 73)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (126, 142)) ('Hereditary Paraganglioma-Pheochromocytoma syndrome', 'Disease', (101, 151)) ('Hereditary Paraganglioma-Pheochromocytoma syndrome', 'Disease', 'MESH:D010673', (101, 151)) ('pathogenic', 'Reg', (47, 57)) ('variant', 'Var', (58, 65)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (112, 125)) ('SDHB', 'Gene', '6390', (69, 73)) 73564 26236513 Next generation sequencing of MAX, NF1, RET, SDHA, SDHAF2, SDHB, SDHC, SDHD, TMEM127, and VHL identified a likely pathogenic variant in SDHB, c.418G>T (p.Val140Phe). ('SDHAF2', 'Gene', (51, 57)) ('SDHAF2', 'Gene', '54949', (51, 57)) ('RET', 'Gene', '5979', (40, 43)) ('SDHC', 'Gene', '6391', (65, 69)) ('SDHB', 'Gene', (136, 140)) ('p.Val140Phe', 'Mutation', 'rs267607032', (152, 163)) ('c.418G>T', 'Var', (142, 150)) ('SDHD', 'Gene', '6392', (71, 75)) ('TMEM127', 'Gene', (77, 84)) ('SDHB', 'Gene', '6390', (59, 63)) ('VHL', 'Gene', (90, 93)) ('c.418G>T', 'Mutation', 'rs267607032', (142, 150)) ('NF1', 'Gene', '4763', (35, 38)) ('RET', 'Gene', (40, 43)) ('pathogenic', 'Reg', (114, 124)) ('SDHA', 'Gene', (45, 49)) ('SDHC', 'Gene', (65, 69)) ('TMEM127', 'Gene', '55654', (77, 84)) ('SDHD', 'Gene', (71, 75)) ('SDHA', 'Gene', '6389', (45, 49)) ('SDHB', 'Gene', (59, 63)) ('NF1', 'Gene', (35, 38)) ('VHL', 'Gene', '7428', (90, 93)) ('SDHA', 'Gene', (51, 55)) ('SDHB', 'Gene', '6390', (136, 140)) ('SDHA', 'Gene', '6389', (51, 55)) 73598 26084817 Moreover, polymorphism of ACE gene, which is known to be related to an increase of cardiovascular risk, has been found in the same patient. ('increase of cardiovascular risk', 'Phenotype', 'HP:0001626', (71, 102)) ('ACE', 'Gene', (26, 29)) ('polymorphism', 'Var', (10, 22)) ('patient', 'Species', '9606', (131, 138)) 73604 26084817 Due to the presence of hypokalemia, other causes of hypertension were researched leading to the discovery of hyperreninemia (236 muUI/ml) with mild hyperaldosteronism, and a mild increase of the renal artery resistance at ultrasound. ('hyperaldosteronism', 'Disease', (148, 166)) ('hypokalemia', 'Phenotype', 'HP:0002900', (23, 34)) ('hypokalemia', 'Disease', (23, 34)) ('hyperreninemia', 'Disease', (109, 123)) ('hypokalemia', 'Disease', 'MESH:D007008', (23, 34)) ('hyperaldosteronism', 'Disease', 'MESH:D003480', (148, 166)) ('hypertension', 'Disease', 'MESH:D006973', (52, 64)) ('hyperreninemia', 'Disease', 'None', (109, 123)) ('hyperaldosteronism', 'Phenotype', 'HP:0000859', (148, 166)) ('hyperreninemia', 'Phenotype', 'HP:0000848', (109, 123)) ('increase of the renal artery', 'Disease', 'MESH:D012078', (179, 207)) ('increase of the renal artery', 'Disease', (179, 207)) ('hypertension', 'Disease', (52, 64)) ('hypertension', 'Phenotype', 'HP:0000822', (52, 64)) ('renal artery resistance', 'Phenotype', 'HP:0001920', (195, 218)) ('236 muUI/ml', 'Var', (125, 136)) 73612 26084817 In particular, type 2 multiple endocrine neoplasia (MEN2) is an autosomal dominant inherited endocrine malignancy syndrome, due to germline mutations in the REarranged during Transfection (RET) proto-oncogene, which encodes a tyrosine kinase receptor involved in cell growth, differentiation and survival. ('RET', 'Gene', '5979', (189, 192)) ('REarranged during Transfection', 'Gene', (157, 187)) ('autosomal dominant inherited endocrine malignancy syndrome', 'Disease', 'None', (64, 122)) ('neoplasia', 'Phenotype', 'HP:0002664', (41, 50)) ('endocrine neoplasia', 'Disease', (31, 50)) ('endocrine malignancy syndrome', 'Phenotype', 'HP:0000818', (93, 122)) ('REarranged during Transfection', 'Gene', '5979', (157, 187)) ('endocrine malignancy', 'Phenotype', 'HP:0100568', (93, 113)) ('RET', 'Gene', (189, 192)) ('mutations in', 'Var', (140, 152)) ('endocrine neoplasia', 'Disease', 'MESH:D009377', (31, 50)) ('due', 'Reg', (124, 127)) ('MEN', 'Species', '9606', (52, 55)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (31, 50)) 73626 26084817 The genetic test for RET germline mutations showed the substitution of methionine for threonine in exon 16 at codon 918 (p.M918T) which was not present in other family members (father, mother and sister). ('methionine', 'Chemical', 'MESH:D008715', (71, 81)) ('threonine', 'Chemical', 'MESH:D013912', (86, 95)) ('RET', 'Gene', (21, 24)) ('p.M918T', 'Var', (121, 128)) ('p.M918T', 'Mutation', 'rs74799832', (121, 128)) ('RET', 'Gene', '5979', (21, 24)) 73631 26084817 Thus, the patient started anti-hypertensive therapy with phenoxybenzamine 20 mg four-times daily, nifedipine slow release 30 mg twice-daily, and atenolol 50 mg once-daily. ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (57, 73)) ('hypertensive', 'Disease', 'MESH:D006973', (31, 43)) ('nifedipine', 'Chemical', 'MESH:D009543', (98, 108)) ('hypertensive', 'Disease', (31, 43)) ('patient', 'Species', '9606', (10, 17)) ('phenoxybenzamine', 'Var', (57, 73)) ('atenolol', 'Chemical', 'MESH:D001262', (145, 153)) 73655 26084817 In particular, mutations of VHL, NF1 and RET cause well characterized cancer susceptibility syndrome (von Hippel Lindau, Neurofibromatosis Type 1 and MEN2, respectively). ('MEN', 'Species', '9606', (150, 153)) ('cancer', 'Phenotype', 'HP:0002664', (70, 76)) ('NF1', 'Gene', (33, 36)) ('mutations', 'Var', (15, 24)) ('Neurofibromatosis Type 1', 'Gene', '4763', (121, 145)) ('von Hippel Lindau', 'Disease', (102, 119)) ('RET', 'Gene', (41, 44)) ('RET', 'Gene', '5979', (41, 44)) ('NF1', 'Gene', '4763', (33, 36)) ('von Hippel Lindau', 'Disease', 'MESH:D006623', (102, 119)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (121, 138)) ('cause', 'Reg', (45, 50)) ('VHL', 'Gene', (28, 31)) ('cancer', 'Disease', (70, 76)) ('cancer', 'Disease', 'MESH:D009369', (70, 76)) ('Neurofibromatosis Type 1', 'Gene', (121, 145)) ('VHL', 'Gene', '7428', (28, 31)) ('MEN2', 'Disease', (150, 154)) 73657 26084817 Moreover, mutations of mitochondrial succinate dehydrogenase (SDH) complex subunits genes (SDHA, SDHB, SDHC, and SDHD) and one complex cofactor (SDHAF2) have been reported in head and neck and abdominal paragangliomas. ('SDH', 'Gene', (91, 94)) ('SDHB', 'Gene', (97, 101)) ('SDHD', 'Gene', (113, 117)) ('SDH', 'Gene', '6390', (97, 100)) ('SDHAF2', 'Gene', '54949', (145, 151)) ('SDHAF2', 'Gene', (145, 151)) ('SDH', 'Gene', (145, 148)) ('SDHA', 'Gene', '6389', (91, 95)) ('reported', 'Reg', (163, 171)) ('SDHA', 'Gene', (145, 149)) ('succinate dehydrogenase', 'Gene', '6390', (37, 60)) ('SDH', 'Gene', (113, 116)) ('abdominal paragangliomas', 'Disease', 'MESH:D010235', (193, 217)) ('SDH', 'Gene', '6390', (62, 65)) ('abdominal paragangliomas', 'Disease', (193, 217)) ('SDH', 'Gene', '6390', (103, 106)) ('SDHA', 'Gene', '6389', (145, 149)) ('SDH', 'Gene', (97, 100)) ('SDHC', 'Gene', '6391', (103, 107)) ('SDH', 'Gene', (62, 65)) ('paragangliomas', 'Phenotype', 'HP:0002668', (203, 217)) ('SDH', 'Gene', '6390', (91, 94)) ('SDH', 'Gene', (103, 106)) ('succinate dehydrogenase', 'Gene', (37, 60)) ('SDHB', 'Gene', '6390', (97, 101)) ('SDH', 'Gene', '6390', (145, 148)) ('SDHD', 'Gene', '6392', (113, 117)) ('SDHC', 'Gene', (103, 107)) ('SDH', 'Gene', '6390', (113, 116)) ('mutations', 'Var', (10, 19)) ('SDHA', 'Gene', (91, 95)) 73660 26084817 Germline mutations in RET codon 918 (M918T) were found to be related to the classic MEN2B phenotype in 95 % of cases but patients often lack a family history of MTC and harbor a de novo mutation. ('RET', 'Gene', (22, 25)) ('M918T', 'Mutation', 'rs74799832', (37, 42)) ('RET', 'Gene', '5979', (22, 25)) ('M918T', 'Var', (37, 42)) ('MEN2B', 'Gene', (84, 89)) ('MEN2B', 'Gene', '5979', (84, 89)) ('patients', 'Species', '9606', (121, 129)) 73662 26084817 The M918T mutation can both induce a conformational change in the kinase catalytic core leading to the activation of RET without dimerization enhancing the intrinsic kinase activity and alter the substrate specificity of RET. ('M918T', 'Var', (4, 9)) ('RET', 'Gene', '5979', (117, 120)) ('RET', 'Gene', '5979', (221, 224)) ('substrate specificity', 'MPA', (196, 217)) ('conformational change', 'MPA', (37, 58)) ('M918T', 'Mutation', 'rs74799832', (4, 9)) ('RET', 'Gene', (117, 120)) ('activation', 'PosReg', (103, 113)) ('alter', 'Reg', (186, 191)) ('intrinsic kinase activity', 'MPA', (156, 181)) ('RET', 'Gene', (221, 224)) 73663 26084817 Genetic test performed in our patient showed the presence of M918T mutation (exon 16) confirming the diagnosis of MEN 2B, while screening performed in other family members was negative. ('patient', 'Species', '9606', (30, 37)) ('MEN 2B', 'Gene', '5979', (114, 120)) ('M918T', 'Mutation', 'rs74799832', (61, 66)) ('M918T', 'Var', (61, 66)) ('MEN 2B', 'Gene', (114, 120)) 73664 26084817 This mutation of RET protoncogene was described as strongly associated with the onset of PHEO. ('PHEO', 'Phenotype', 'HP:0002666', (89, 93)) ('RET', 'Gene', (17, 20)) ('mutation', 'Var', (5, 13)) ('PHEO', 'Disease', (89, 93)) ('RET', 'Gene', '5979', (17, 20)) ('associated with', 'Reg', (60, 75)) 73677 26084817 The D/D genotype was found more frequently in patients with myocardial infarction than in control subjects, but other studies showed no correlation with coronary disease or stroke. ('coronary disease', 'Disease', (153, 169)) ('patients', 'Species', '9606', (46, 54)) ('D/D', 'Var', (4, 7)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (60, 81)) ('stroke', 'Disease', 'MESH:D020521', (173, 179)) ('coronary disease', 'Phenotype', 'HP:0001677', (153, 169)) ('coronary disease', 'Disease', 'MESH:D003324', (153, 169)) ('stroke', 'Phenotype', 'HP:0001297', (173, 179)) ('myocardial infarction', 'Disease', (60, 81)) ('stroke', 'Disease', (173, 179)) ('myocardial infarction', 'Disease', 'MESH:D009203', (60, 81)) 73678 26084817 The I/D genotype, which has been detected in our patient, is described in association with several condition as diabetic peripheral neuropathy, risk of recurrent miscarriage as well as hypertension and cardiovascular disease. ('cardiovascular disease', 'Disease', (202, 224)) ('I/D', 'Var', (4, 7)) ('hypertension', 'Disease', 'MESH:D006973', (185, 197)) ('miscarriage', 'Phenotype', 'HP:0005268', (162, 173)) ('diabetic peripheral neuropathy', 'Disease', 'MESH:D003929', (112, 142)) ('recurrent miscarriage', 'Phenotype', 'HP:0200067', (152, 173)) ('association', 'Reg', (74, 85)) ('patient', 'Species', '9606', (49, 56)) ('hypertension', 'Disease', (185, 197)) ('cardiovascular disease', 'Disease', 'MESH:D002318', (202, 224)) ('cardiovascular disease', 'Phenotype', 'HP:0001626', (202, 224)) ('hypertension', 'Phenotype', 'HP:0000822', (185, 197)) ('diabetic peripheral neuropathy', 'Disease', (112, 142)) ('peripheral neuropathy', 'Phenotype', 'HP:0009830', (121, 142)) ('recurrent miscarriage', 'Disease', (152, 173)) 73679 26084817 A very important point, in our opinion, is the association between ACE polymorphism, MEN2B-related PHEO and reninoma, which can all contribute, through different pathways, to severe juvenile hypertension. ('hypertension', 'Phenotype', 'HP:0000822', (191, 203)) ('contribute', 'Reg', (132, 142)) ('MEN2B', 'Gene', (85, 90)) ('MEN2B', 'Gene', '5979', (85, 90)) ('association', 'Interaction', (47, 58)) ('PHEO', 'Phenotype', 'HP:0002666', (99, 103)) ('reninoma', 'Disease', (108, 116)) ('PHEO', 'Disease', (99, 103)) ('hypertension', 'Disease', 'MESH:D006973', (191, 203)) ('polymorphism', 'Var', (71, 83)) ('reninoma', 'Disease', 'None', (108, 116)) ('hypertension', 'Disease', (191, 203)) 73690 26084817 It is well known that both inappropriate cathecolamine and aldosterone secretion per se cause cardiac remodeling, similarly to what has been found in our patient who developed dilated cardiomyopathy and impaired systolic function. ('impaired systolic function', 'Disease', (203, 229)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (184, 198)) ('impaired systolic function', 'Phenotype', 'HP:0006673', (203, 229)) ('patient', 'Species', '9606', (154, 161)) ('inappropriate cathecolamine and aldosterone secretion', 'Phenotype', 'HP:0031218', (27, 80)) ('dilated cardiomyopathy', 'Disease', 'MESH:D002311', (176, 198)) ('dilated cardiomyopathy', 'Disease', (176, 198)) ('inappropriate', 'Var', (27, 40)) ('aldosterone', 'Chemical', 'MESH:D000450', (59, 70)) ('aldosterone secretion', 'MPA', (59, 80)) ('cardiac remodeling', 'Disease', (94, 112)) ('cathecolamine', 'MPA', (41, 54)) ('cathecolamine', 'Chemical', '-', (41, 54)) ('impaired systolic function', 'Disease', 'MESH:D003072', (203, 229)) ('dilated cardiomyopathy', 'Phenotype', 'HP:0001644', (176, 198)) ('cardiac remodeling', 'Disease', 'MESH:D020257', (94, 112)) ('cause', 'Reg', (88, 93)) 73691 26084817 While we cannot exclude that the heart failure may have resulted in an increase in aldosterone synthase expression, on the other hand it is difficult to determine whether the presence of the ACE I/D polymorphism may have played a contributing role in this setting, except that it likely worsened the degree of hypertension and reduced the response to ACE-inhibitors which had been used for several years to treat the patient. ('aldosterone synthase', 'Gene', '1585', (83, 103)) ('hypertension', 'Disease', (310, 322)) ('polymorphism', 'Var', (199, 211)) ('worsened', 'PosReg', (287, 295)) ('increase in aldosterone', 'Phenotype', 'HP:0000859', (71, 94)) ('response to ACE-inhibitors', 'MPA', (339, 365)) ('hypertension', 'Phenotype', 'HP:0000822', (310, 322)) ('reduced', 'NegReg', (327, 334)) ('heart failure', 'Disease', 'MESH:D006333', (33, 46)) ('heart failure', 'Phenotype', 'HP:0001635', (33, 46)) ('expression', 'MPA', (104, 114)) ('increase', 'PosReg', (71, 79)) ('presence', 'Var', (175, 183)) ('hypertension', 'Disease', 'MESH:D006973', (310, 322)) ('aldosterone synthase', 'Gene', (83, 103)) ('heart failure', 'Disease', (33, 46)) ('patient', 'Species', '9606', (417, 424)) ('ACE I/D', 'Gene', (191, 198)) 73692 26084817 A possible hypothesis involving the role of ACE I/D polymorphism in explaining this particular biochemical finding, is an increase of ACE activity in extra-adrenal aldosterone biosynthesis. ('extra-adrenal aldosterone biosynthesis', 'MPA', (150, 188)) ('aldosterone', 'Chemical', 'MESH:D000450', (164, 175)) ('polymorphism', 'Var', (52, 64)) ('adrenal aldosterone', 'Phenotype', 'HP:0000859', (156, 175)) ('ACE activity', 'MPA', (134, 146)) ('increase', 'PosReg', (122, 130)) 73729 25506289 On day 6 of admission, the patient was noted to be hypertensive with a blood pressure of 210/120, and a neurological exam revealed new left-sided 4+/5 weakness of proximal and distal muscles, drift of the left upper and lower limbs, abnormal heel-to-shin and questionable facial asymmetry, which had not been noted on prior exams during the hospitalization. ('lower limbs', 'Phenotype', 'HP:0006385', (220, 231)) ('facial asymmetry', 'Phenotype', 'HP:0000324', (272, 288)) ('hypertensive', 'Disease', 'MESH:D006973', (51, 63)) ('facial asymmetry', 'CPA', (272, 288)) ('abnormal heel', 'Phenotype', 'HP:0008364', (233, 246)) ('hypertensive', 'Disease', (51, 63)) ('patient', 'Species', '9606', (27, 34)) ('4+/5', 'Var', (146, 150)) ('weakness of proximal', 'Phenotype', 'HP:0003701', (151, 171)) 73841 22937290 Although medical therapy in our patient was effective in controlling hypertension in our patient for five years, it is likely that resection of the pheochromocytoma shortly after diagnosis as recommended would have prevented catecholamine-induced cardiovascular complications. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (148, 164)) ('patient', 'Species', '9606', (89, 96)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (148, 164)) ('resection', 'Var', (131, 140)) ('hypertension', 'Disease', 'MESH:D006973', (69, 81)) ('catecholamine', 'Chemical', 'MESH:D002395', (225, 238)) ('hypertension', 'Disease', (69, 81)) ('patient', 'Species', '9606', (32, 39)) ('cardiovascular complications', 'Disease', 'MESH:D002318', (247, 275)) ('hypertension', 'Phenotype', 'HP:0000822', (69, 81)) ('pheochromocytoma', 'Disease', (148, 164)) ('cardiovascular complications', 'Disease', (247, 275)) ('cardiovascular complications', 'Phenotype', 'HP:0001626', (247, 275)) 73937 29450727 Approximately 40% of the PPGL tumours carry a germ line mutation in one of a number of susceptibility genes of which those that are found in succinate dehydrogenase (SDH) or in von Hippel-Lindau (VHL) genes manifest a strong pseudohypoxic phenotype. ('pseudohypoxic phenotype', 'MPA', (225, 248)) ('tumours', 'Phenotype', 'HP:0002664', (30, 37)) ('von Hippel-Lindau', 'Gene', '22346', (177, 194)) ('VHL', 'Disease', (196, 199)) ('VHL', 'Disease', 'MESH:D006623', (196, 199)) ('succinate dehydrogenase', 'Gene', (141, 164)) ('PPGL tumours', 'Disease', 'MESH:D009369', (25, 37)) ('PPGL tumours', 'Disease', (25, 37)) ('mutation', 'Var', (56, 64)) ('SDH', 'Gene', (166, 169)) ('von Hippel-Lindau', 'Gene', (177, 194)) ('tumour', 'Phenotype', 'HP:0002664', (30, 36)) ('succinate dehydrogenase', 'Gene', '30956', (141, 164)) 73938 29450727 Mutations in SDH are oncogenic, forming tumours in a select subset of tissues, but the cause for this remains elusive. ('SDH', 'Gene', (13, 16)) ('tumours', 'Disease', 'MESH:D009369', (40, 47)) ('tumours', 'Disease', (40, 47)) ('Mutations', 'Var', (0, 9)) ('forming', 'Reg', (32, 39)) ('tumour', 'Phenotype', 'HP:0002664', (40, 46)) ('tumours', 'Phenotype', 'HP:0002664', (40, 47)) 73939 29450727 Although elevated succinate levels lead to increase in hypoxia-like signalling, there are other phenotypes that are being increasingly recognised in SDH-mutated PPGL, such as DNA hypermethylation. ('elevated', 'PosReg', (9, 17)) ('SDH-mutated', 'Var', (149, 160)) ('succinate levels', 'MPA', (18, 34)) ('DNA hypermethylation', 'Disease', (175, 195)) ('elevated succinate', 'Phenotype', 'HP:0020149', (9, 27)) ('hypoxia', 'Disease', 'MESH:D000860', (55, 62)) ('PPGL', 'Gene', (161, 165)) ('increase', 'PosReg', (43, 51)) ('hypoxia', 'Disease', (55, 62)) ('succinate', 'Chemical', 'MESH:D019802', (18, 27)) 73941 29450727 In this review, we will discuss the various implications that the malfunctioning SDH can have and its impact on cancer development. ('cancer', 'Disease', (112, 118)) ('cancer', 'Disease', 'MESH:D009369', (112, 118)) ('malfunctioning', 'Var', (66, 80)) ('cancer', 'Phenotype', 'HP:0002664', (112, 118)) ('SDH', 'Gene', (81, 84)) 73943 29450727 The hallmarks can be elicited as a result of mutations in oncogenes and tumour suppressor genes:indeed, this is what the focus of much research has been on to date. ('tumour', 'Phenotype', 'HP:0002664', (72, 78)) ('tumour', 'Disease', (72, 78)) ('mutations', 'Var', (45, 54)) ('tumour', 'Disease', 'MESH:D009369', (72, 78)) 73953 29450727 Approximately 40% of the PPGL tumours carry a germ line mutation in one of a number of susceptibility genes, which makes PPGL the cancer syndrome with the highest reported degree of heritability (Dahia). ('tumours', 'Phenotype', 'HP:0002664', (30, 37)) ('cancer syndrome', 'Disease', 'MESH:D009369', (130, 145)) ('cancer syndrome', 'Disease', (130, 145)) ('PPGL tumours', 'Disease', 'MESH:D009369', (25, 37)) ('PPGL tumours', 'Disease', (25, 37)) ('cancer', 'Phenotype', 'HP:0002664', (130, 136)) ('PPGL', 'Disease', (121, 125)) ('mutation', 'Var', (56, 64)) ('tumour', 'Phenotype', 'HP:0002664', (30, 36)) 73954 29450727 More recently, apparently sporadic cases were shown to harbour somatic mutations in known susceptibility genes (and some newly defined genes) which raises the number of a genetic driver event in these cancers to up to 70-80% (Burnichon et al. ('cancers', 'Disease', 'MESH:D009369', (201, 208)) ('cancers', 'Phenotype', 'HP:0002664', (201, 208)) ('cancers', 'Disease', (201, 208)) ('mutations', 'Var', (71, 80)) ('cancer', 'Phenotype', 'HP:0002664', (201, 207)) ('raises', 'PosReg', (148, 154)) 73957 29450727 This finding also contributed to the renewed interest in Otto Warburg's postulate almost 100 years before that defective mitochondrial metabolism was the major cause of cancer development (Koppenol et al.). ('cancer', 'Disease', (169, 175)) ('cause', 'Reg', (160, 165)) ('mitochondrial metabolism', 'MPA', (121, 145)) ('defective mitochondrial metabolism', 'Phenotype', 'HP:0003287', (111, 145)) ('cancer', 'Phenotype', 'HP:0002664', (169, 175)) ('defective', 'Var', (111, 120)) ('cancer', 'Disease', 'MESH:D009369', (169, 175)) 73958 29450727 Over the next few years, mutations in the other three SDH genes (A, B and C) and its assembly factor (SDHAF2) were also observed, adding considerable evidential weight to SDHx genes being critical tumour suppressors linked to PPGL (Astuti et al. ('tumour', 'Disease', 'MESH:D009369', (197, 203)) ('mutations', 'Var', (25, 34)) ('SDHx genes', 'Gene', (171, 181)) ('tumour', 'Disease', (197, 203)) ('SDHx', 'Chemical', '-', (171, 175)) ('SDH', 'Gene', (54, 57)) ('PPGL', 'Gene', (226, 230)) ('SDHAF2', 'Gene', '66072', (102, 108)) ('tumour', 'Phenotype', 'HP:0002664', (197, 203)) ('SDHAF2', 'Gene', (102, 108)) 73961 29450727 Long before the discovery of mutations in SDHx in PPGL, the major genetic mutations associated with these cancers were of neurofibromatosis-1 (NF1), RET and von Hippel-Lindau (VHL) (Else). ('von Hippel-Lindau', 'Gene', (157, 174)) ('PPGL', 'Gene', (50, 54)) ('cancers', 'Phenotype', 'HP:0002664', (106, 113)) ('NF1', 'Gene', (143, 146)) ('cancers', 'Disease', (106, 113)) ('neurofibromatosis-1', 'Gene', '18015', (122, 141)) ('cancer', 'Phenotype', 'HP:0002664', (106, 112)) ('von Hippel-Lindau', 'Gene', '22346', (157, 174)) ('VHL', 'Disease', (176, 179)) ('associated', 'Reg', (84, 94)) ('SDHx', 'Gene', (42, 46)) ('RET', 'Disease', (149, 152)) ('neurofibromatosis-1', 'Gene', (122, 141)) ('mutations', 'Var', (29, 38)) ('cancers', 'Disease', 'MESH:D009369', (106, 113)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (122, 139)) ('SDHx', 'Chemical', '-', (42, 46)) ('mutations', 'Var', (74, 83)) ('VHL', 'Disease', 'MESH:D006623', (176, 179)) ('NF1', 'Gene', '18015', (143, 146)) 73962 29450727 Interestingly, the transcriptional profiling of tumours with mutations in these different genes shows that they segregate into two clusters: a 'pseudohypoxic' cluster that includes tumours with VHL and SDHx mutations and an 'activated tyrosine kinase' cluster, originally containing tumours with RET and NF1(Dahia et al.). ('tumour', 'Phenotype', 'HP:0002664', (181, 187)) ('SDHx', 'Gene', (202, 206)) ('VHL', 'Disease', (194, 197)) ('SDHx', 'Chemical', '-', (202, 206)) ('mutations', 'Var', (207, 216)) ('tumours', 'Disease', (48, 55)) ('tumour', 'Phenotype', 'HP:0002664', (48, 54)) ('tumours', 'Disease', (283, 290)) ('mutations', 'Var', (61, 70)) ('tumours', 'Phenotype', 'HP:0002664', (48, 55)) ('NF1', 'Gene', '18015', (304, 307)) ('VHL', 'Disease', 'MESH:D006623', (194, 197)) ('tumours', 'Disease', 'MESH:D009369', (48, 55)) ('tumours', 'Disease', (181, 188)) ('tumours', 'Phenotype', 'HP:0002664', (283, 290)) ('tumours', 'Disease', 'MESH:D009369', (283, 290)) ('NF1', 'Gene', (304, 307)) ('tumours', 'Phenotype', 'HP:0002664', (181, 188)) ('tumours', 'Disease', 'MESH:D009369', (181, 188)) ('tumour', 'Phenotype', 'HP:0002664', (283, 289)) 73963 29450727 ), but the pseudohypoxic grouping based around SDH and VHL mutations remains a major phenotypically characterised cluster. ('SDH', 'Gene', (47, 50)) ('VHL', 'Disease', (55, 58)) ('VHL', 'Disease', 'MESH:D006623', (55, 58)) ('mutations', 'Var', (59, 68)) 73964 29450727 Since cancer is characterised by an unrestricted growth, it seems counterproductive that deficiencies in apparently essential metabolic enzymes can be oncogenic. ('cancer', 'Disease', (6, 12)) ('deficiencies', 'Var', (89, 101)) ('cancer', 'Disease', 'MESH:D009369', (6, 12)) ('cancer', 'Phenotype', 'HP:0002664', (6, 12)) 73968 29450727 They found that the TCA cycle truncation at FH led to an accumulation of mainly glutamine-derived fumarate (and to some degree, succinate), but low malate and citrate levels. ('accumulation', 'PosReg', (57, 69)) ('succinate', 'Chemical', 'MESH:D019802', (128, 137)) ('citrate', 'Chemical', 'MESH:D019343', (159, 166)) ('glutamine-derived fumarate', 'Chemical', '-', (80, 106)) ('truncation', 'Var', (30, 40)) ('low', 'NegReg', (144, 147)) ('glutamine-derived fumarate', 'MPA', (80, 106)) ('malate', 'Chemical', 'MESH:C030298', (148, 154)) 73975 29450727 Two recent studies on metabolic re-wiring in SDH-deficient cells have shown that a seemingly similar metabolic deficiency results in an significantly different metabolic phenotype, with cells dependent on pyruvate carboxylase (PC) activity for aspartate synthesis (Cardaci et al. ('metabolic deficiency', 'Disease', (101, 121)) ('SDH-deficient', 'Gene', (45, 58)) ('SDH-deficient', 'Var', (45, 58)) ('pyruvate carboxylase', 'Gene', '18563', (205, 225)) ('metabolic deficiency', 'Disease', 'MESH:D008659', (101, 121)) ('metabolic', 'MPA', (160, 169)) ('aspartate', 'Chemical', 'MESH:D001224', (244, 253)) ('pyruvate carboxylase', 'Gene', (205, 225)) 73977 29450727 This is likely a consequence of altered TCA cycle activity, but the precise nature of the change in redox function within SDH-deficient cells is still unclear, with a further study suggesting that SDHx mutations that are oncogenic differ from those associated with neurodegenerative diseases in that only the former result in decreased NADH oxidation by complex I of the respiratory chain (Lorendeau et al.). ('decreased', 'NegReg', (326, 335)) ('neurodegenerative diseases', 'Disease', (265, 291)) ('SDHx', 'Gene', (197, 201)) ('neurodegenerative diseases', 'Phenotype', 'HP:0002180', (265, 291)) ('SDHx', 'Chemical', '-', (197, 201)) ('neurodegenerative diseases', 'Disease', 'MESH:D019636', (265, 291)) ('NADH oxidation', 'MPA', (336, 350)) ('NADH', 'Chemical', 'MESH:D009243', (336, 340)) ('mutations', 'Var', (202, 211)) 73978 29450727 presented data regarding whether deficiencies in SDH lead to an increase in the haem biosynthesis pathway, reminiscent of FH-deficient cells (Cardaci et al. ('haem biosynthesis pathway', 'Pathway', (80, 105)) ('FH-deficient', 'Disease', 'MESH:D006938', (122, 134)) ('SDH', 'Gene', (49, 52)) ('increase', 'PosReg', (64, 72)) ('haem', 'Chemical', 'MESH:D006418', (80, 84)) ('FH-deficient', 'Disease', (122, 134)) ('deficiencies', 'Var', (33, 45)) 74006 29450727 The effect of another more recently described 2OG-like metabolite, 2-hydroxyglutarate (2-HG), which arises as the result of oncogenic isocitrate dehydrogenase (IDH) mutations, is not yet clear, seemingly dependent on the 2OG-dioxygenase enzyme involved. ('IDH', 'Gene', '15926', (160, 163)) ('2-HG', 'Chemical', 'MESH:C019417', (87, 91)) ('oxygen', 'Chemical', 'MESH:D010100', (227, 233)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (67, 85)) ('IDH', 'Gene', (160, 163)) ('mutations', 'Var', (165, 174)) ('citrate', 'Chemical', 'MESH:D019343', (137, 144)) 74007 29450727 D-2-HG can increase or decrease the activity of PHDs, while the L-2-HG has been reported to competitively inhibit PHD enzymes (Sullivan et al. ('2-HG', 'Chemical', 'MESH:C019417', (2, 6)) ('decrease', 'NegReg', (23, 31)) ('increase', 'PosReg', (11, 19)) ('L-2-HG', 'Var', (64, 70)) ('PHDs', 'Enzyme', (48, 52)) ('activity', 'MPA', (36, 44)) ('2-HG', 'Chemical', 'MESH:C019417', (66, 70)) ('D-2-HG', 'Var', (0, 6)) ('inhibit', 'NegReg', (106, 113)) ('PHDs', 'Chemical', 'MESH:D013929', (48, 52)) 74010 29450727 Interestingly, the pseudohypoxic cluster of PPGL associated with SDHx and VHL mutations can be further stratified using the DNA methylation profile (Letouze et al.). ('associated', 'Reg', (49, 59)) ('PPGL', 'Gene', (44, 48)) ('mutations', 'Var', (78, 87)) ('SDHx', 'Chemical', '-', (65, 69)) ('SDHx', 'Gene', (65, 69)) ('VHL', 'Disease', (74, 77)) ('VHL', 'Disease', 'MESH:D006623', (74, 77)) 74013 29450727 Interestingly, tumours harbouring mutations in FH were also found to have hypermethylated DNA similarly to the SDHB tumours, in which the epigenetic silencing was particularly severe compared to those tumours with mutations in other SDH subunits (Castro-Vega et al. ('tumour', 'Phenotype', 'HP:0002664', (116, 122)) ('tumours', 'Disease', 'MESH:D009369', (201, 208)) ('epigenetic silencing', 'MPA', (138, 158)) ('tumours', 'Phenotype', 'HP:0002664', (116, 123)) ('tumours', 'Disease', 'MESH:D009369', (15, 22)) ('tumours', 'Disease', (201, 208)) ('tumours', 'Disease', (15, 22)) ('tumours', 'Phenotype', 'HP:0002664', (201, 208)) ('SDHB tumours', 'Disease', (111, 123)) ('tumours', 'Disease', 'MESH:D009369', (116, 123)) ('tumour', 'Phenotype', 'HP:0002664', (201, 207)) ('tumours', 'Disease', (116, 123)) ('SDHB tumours', 'Disease', 'MESH:D009369', (111, 123)) ('tumour', 'Phenotype', 'HP:0002664', (15, 21)) ('hypermethylated', 'MPA', (74, 89)) ('mutations', 'Var', (34, 43)) ('tumours', 'Phenotype', 'HP:0002664', (15, 22)) 74021 29450727 An example of this is that HIF1 activity increases expression of enzymes that control glucose metabolism, while HIF2 can drive de-differentiation through increasing expression of proteins such as SOX2, NANOG and OCT4:well-described stem cell markers (Covello et al. ('HIF', 'Gene', (112, 115)) ('enzymes', 'Enzyme', (65, 72)) ('HIF', 'Gene', '11863', (112, 115)) ('expression', 'MPA', (51, 61)) ('glucose metabolism', 'MPA', (86, 104)) ('NANOG', 'Gene', (202, 207)) ('OCT4', 'Gene', (212, 216)) ('activity', 'Var', (32, 40)) ('SOX2', 'Gene', '20674', (196, 200)) ('HIF', 'Gene', (27, 30)) ('increasing', 'PosReg', (154, 164)) ('increases', 'PosReg', (41, 50)) ('HIF', 'Gene', '11863', (27, 30)) ('OCT4', 'Gene', '18999', (212, 216)) ('SOX2', 'Gene', (196, 200)) ('NANOG', 'Gene', '71950', (202, 207)) ('expression', 'MPA', (165, 175)) ('de-differentiation', 'CPA', (127, 145)) ('glucose', 'Chemical', 'MESH:D005947', (86, 93)) 74033 29450727 Since the first report of an EPAS1 (HIF2alpha) mutation in PPGL in 2012 (Zhuang et al. ('HIF2alpha', 'Gene', '13819', (36, 45)) ('EPAS1', 'Gene', '13819', (29, 34)) ('mutation', 'Var', (47, 55)) ('HIF2alpha', 'Gene', (36, 45)) ('PPGL', 'Gene', (59, 63)) ('EPAS1', 'Gene', (29, 34)) 74034 29450727 ), a number of studies have demonstrated EPAS1 mutations, with an overall frequency suggested as between 6 and 12% (Toledo). ('EPAS1', 'Gene', '13819', (41, 46)) ('EPAS1', 'Gene', (41, 46)) ('mutations', 'Var', (47, 56)) 74040 29450727 ), PPGL with HIFalpha mutations demonstrate a different pseudohypoxic transcriptome, suggesting that a further transcriptional driver is involved (Fliedner et al.). ('pseudohypoxic transcriptome', 'MPA', (56, 83)) ('HIF', 'Gene', '11863', (13, 16)) ('mutations', 'Var', (22, 31)) ('HIF', 'Gene', (13, 16)) 74042 29450727 In a mouse HLRCC mode with renal tubule-specific Fh1-/-, genetic inactivation of HIF1alpha or HIF2alpha, either alone or in combination, failed to ameliorate the development of renal cysts (Adam et al.). ('HIF1alpha', 'Gene', (81, 90)) ('HIF2alpha', 'Gene', (94, 103)) ('genetic inactivation', 'Var', (57, 77)) ('renal cysts', 'Disease', 'MESH:D007674', (177, 188)) ('HIF2alpha', 'Gene', '13819', (94, 103)) ('mouse', 'Species', '10090', (5, 10)) ('renal cysts', 'Disease', (177, 188)) ('Fh1', 'Gene', '14194', (49, 52)) ('Fh1', 'Gene', (49, 52)) ('renal cysts', 'Phenotype', 'HP:0000107', (177, 188)) ('HIF1alpha', 'Gene', '15251', (81, 90)) 74055 29450727 Though complexes I and III are considered the major ROS producing sites in the ETC, recent studies have shown that under certain circumstances, SDH can also produce a significant amount of ROS (Kluckova et al. ('SDH', 'Var', (144, 147)) ('ROS', 'Chemical', 'MESH:D017382', (52, 55)) ('ROS', 'Chemical', 'MESH:D017382', (189, 192)) ('ROS', 'MPA', (189, 192)) 74058 29450727 Downregulation of ETC components by either silencing a subunit of complex III or removing cytochrome c has been shown to attenuate HIF1alpha stabilisation under hypoxia, but retained the ability to stabilise HIF when challenged with direct PHD enzyme inhibitors, such as iron chelators (Brunelle et al. ('HIF', 'Gene', '11863', (131, 134)) ('stabilisation', 'MPA', (141, 154)) ('iron', 'Chemical', 'MESH:D007501', (271, 275)) ('HIF', 'Gene', '11863', (208, 211)) ('HIF1alpha', 'Gene', '15251', (131, 140)) ('Downregulation', 'NegReg', (0, 14)) ('attenuate', 'NegReg', (121, 130)) ('hypoxia', 'Disease', 'MESH:D000860', (161, 168)) ('silencing', 'Var', (43, 52)) ('hypoxia', 'Disease', (161, 168)) ('HIF', 'Gene', (131, 134)) ('HIF1alpha', 'Gene', (131, 140)) ('cytochrome c', 'MPA', (90, 102)) ('HIF', 'Gene', (208, 211)) ('removing', 'Reg', (81, 89)) 74063 29450727 The authors in the mentioned studies chose to genetically manipulate different SDH subunits of which all impaired SDH activity to various levels (but none of which resulted in complete loss of activity, as observed in patient tumours), and despite the disparate observations regarding ROS production, HIF stabilisation was observed in all models whether higher ROS were detected or not. ('genetically', 'Var', (46, 57)) ('tumour', 'Phenotype', 'HP:0002664', (226, 232)) ('patient', 'Species', '9606', (218, 225)) ('activity', 'MPA', (118, 126)) ('impaired', 'NegReg', (105, 113)) ('HIF', 'Gene', '11863', (301, 304)) ('tumours', 'Phenotype', 'HP:0002664', (226, 233)) ('activity', 'MPA', (193, 201)) ('ROS', 'Chemical', 'MESH:D017382', (285, 288)) ('tumours', 'Disease', 'MESH:D009369', (226, 233)) ('tumours', 'Disease', (226, 233)) ('ROS', 'Chemical', 'MESH:D017382', (361, 364)) ('HIF', 'Gene', (301, 304)) ('SDH', 'Protein', (114, 117)) 74066 29450727 While SDHB knockdown induced ROS and stabilised HIF, SDHA knockdown did not (Guzy et al.). ('SDHA', 'Gene', '66945', (53, 57)) ('ROS', 'MPA', (29, 32)) ('HIF', 'Gene', (48, 51)) ('ROS', 'Chemical', 'MESH:D017382', (29, 32)) ('induced', 'Reg', (21, 28)) ('SDHA', 'Gene', (53, 57)) ('HIF', 'Gene', '11863', (48, 51)) ('knockdown', 'Var', (11, 20)) ('SDHB', 'Gene', (6, 10)) 74068 29450727 This study therefore provided experimental proof for the production of ROS in PPGL arising from SDHB-D mutations. ('mutations', 'Var', (103, 112)) ('SDHB-D', 'Gene', (96, 102)) ('ROS', 'Chemical', 'MESH:D017382', (71, 74)) 74069 29450727 It is possible that tumours founded upon SDHA mutations, which were only characterised in 2010 (Burnichon et al. ('SDHA', 'Gene', (41, 45)) ('mutations', 'Var', (46, 55)) ('SDHA', 'Gene', '66945', (41, 45)) ('tumours', 'Phenotype', 'HP:0002664', (20, 27)) ('tumours', 'Disease', 'MESH:D009369', (20, 27)) ('tumours', 'Disease', (20, 27)) ('tumour', 'Phenotype', 'HP:0002664', (20, 26)) 74072 29450727 were unable to detect measureable changes in ROS levels, and by assessing this in cells silenced for SDHB either transiently, stably or by expression of missense mutant SDHB genes, these authors were unable to support a hypothesis that alterations in SDHB activity could result in increased ROS production (Cervera et al.). ('ROS production', 'MPA', (291, 305)) ('ROS', 'Chemical', 'MESH:D017382', (291, 294)) ('SDHB', 'Gene', (169, 173)) ('ROS', 'Chemical', 'MESH:D017382', (45, 48)) ('urea', 'Chemical', 'MESH:D014508', (26, 30)) ('alterations', 'Var', (236, 247)) ('SDHB', 'Gene', (251, 255)) ('activity', 'MPA', (256, 264)) ('increased', 'PosReg', (281, 290)) ('increased ROS production', 'Phenotype', 'HP:0025464', (281, 305)) 74083 29450727 In the context of pheochromocytomas, if RET from high succinate via complex II is involved in the oxygen sensing, SDH mutations should impair the organismal hypoxia response and would be expected to result in the abolition of catecholamine secretion through loss of ROS-mediated K+ channel modulation. ('catecholamine secretion', 'MPA', (226, 249)) ('ROS-mediated K+ channel modulation', 'MPA', (266, 300)) ('SDH', 'Gene', (114, 117)) ('catecholamine', 'Chemical', 'MESH:D002395', (226, 239)) ('high succinate', 'Phenotype', 'HP:0020149', (49, 63)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (18, 35)) ('loss', 'NegReg', (258, 262)) ('succinate', 'Chemical', 'MESH:D019802', (54, 63)) ('mutations', 'Var', (118, 127)) ('organismal', 'CPA', (146, 156)) ('hypoxia', 'Disease', (157, 164)) ('ROS', 'Chemical', 'MESH:D017382', (266, 269)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (18, 34)) ('oxygen', 'Chemical', 'MESH:D010100', (98, 104)) ('hypoxia', 'Disease', 'MESH:D000860', (157, 164)) ('pheochromocytomas', 'Disease', (18, 35)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (18, 35)) ('abolition', 'NegReg', (213, 222)) ('impair', 'NegReg', (135, 141)) 74087 29450727 Mutations in SDH (and other TCA cycle enzymes) are oncogenic, forming tumours in a select subset of tissues. ('SDH', 'Gene', (13, 16)) ('forming', 'Reg', (62, 69)) ('tumour', 'Phenotype', 'HP:0002664', (70, 76)) ('tumours', 'Phenotype', 'HP:0002664', (70, 77)) ('Mutations', 'Var', (0, 9)) ('tumours', 'Disease', 'MESH:D009369', (70, 77)) ('tumours', 'Disease', (70, 77)) 74089 29450727 Although VHL-driven tumour models have been achieved, this was possible by mutating further tumour suppressor genes (Bailey et al. ('tumour', 'Disease', 'MESH:D009369', (92, 98)) ('tumour', 'Disease', (92, 98)) ('tumour', 'Disease', 'MESH:D009369', (20, 26)) ('tumour', 'Phenotype', 'HP:0002664', (20, 26)) ('tumour', 'Disease', (20, 26)) ('VHL-driven tumour', 'Disease', 'MESH:D006623', (9, 26)) ('mutating', 'Var', (75, 83)) ('tumour', 'Phenotype', 'HP:0002664', (92, 98)) ('VHL-driven tumour', 'Disease', (9, 26)) 74091 29450727 Consistent with this, mutations in the genes encoding ATRX (involved in telomere maintenance) and in the promoter region of telomerase itself (TERT) have been reported in SDH-deficient tumours (Fishbein et al. ('TERT', 'Gene', (143, 147)) ('reported', 'Reg', (159, 167)) ('tumours', 'Phenotype', 'HP:0002664', (185, 192)) ('SDH-deficient tumours', 'Disease', 'MESH:D009369', (171, 192)) ('SDH-deficient tumours', 'Disease', (171, 192)) ('tumour', 'Phenotype', 'HP:0002664', (185, 191)) ('TERT', 'Gene', '21752', (143, 147)) ('mutations', 'Var', (22, 31)) ('ATRX', 'Gene', (54, 58)) ('ATRX', 'Gene', '22589', (54, 58)) 74093 29450727 Although this introduces an apparent increase in complexity to the field, it is likely that these mutations will greatly help our understanding of the metabolic changes required for transformation:whether this is increased succinate concentrations, changes in redox homeostasis, ROS production, the pseudohypoxic signalling cascades observed or indeed more complex metabolic changes. ('succinate concentrations', 'MPA', (223, 247)) ('changes', 'Reg', (249, 256)) ('ROS', 'Chemical', 'MESH:D017382', (279, 282)) ('redox homeostasis', 'MPA', (260, 277)) ('mutations', 'Var', (98, 107)) ('ROS production', 'MPA', (279, 293)) ('increased succinate', 'Phenotype', 'HP:0020149', (213, 232)) ('help', 'Reg', (121, 125)) ('succinate', 'Chemical', 'MESH:D019802', (223, 232)) ('increased', 'PosReg', (213, 222)) 74095 29450727 Given the range of mutations observed in PPGL represented by VHL, EGLN1 (PHD2) and EPAS1 (HIF2alpha) of which all directly control hypoxic signalling and with SDH and FH mutations further providing a link to hypoxia, pseudohypoxia seems to be an undeniable feature of PPGL. ('VHL', 'Disease', (61, 64)) ('EGLN1', 'Gene', '112405', (66, 71)) ('PHD2', 'Gene', '112405', (73, 77)) ('HIF2alpha', 'Gene', '13819', (90, 99)) ('EGLN1', 'Gene', (66, 71)) ('EPAS1', 'Gene', (83, 88)) ('PPGL', 'Gene', (41, 45)) ('hypoxia', 'Disease', (208, 215)) ('SDH', 'Gene', (159, 162)) ('hypoxia', 'Disease', (223, 230)) ('VHL', 'Disease', 'MESH:D006623', (61, 64)) ('HIF2alpha', 'Gene', (90, 99)) ('hypoxia', 'Disease', 'MESH:D000860', (208, 215)) ('control', 'Reg', (123, 130)) ('hypoxia', 'Disease', 'MESH:D000860', (223, 230)) ('pseudohypoxia', 'Disease', (217, 230)) ('PHD2', 'Gene', (73, 77)) ('EPAS1', 'Gene', '13819', (83, 88)) ('pseudohypoxia', 'Disease', 'None', (217, 230)) ('mutations', 'Var', (170, 179)) ('mutations', 'Var', (19, 28)) ('hypoxic signalling', 'MPA', (131, 149)) 74096 29450727 Intriguingly, pseudohypoxic HIF signalling has also been suggested as an important driver in the tumourigenesis of tumours with mutations observed in cluster 2 PPGL, as their signalling via Ras/MAPK, PI3K/AKT and mTORC pathways could result in increased HIF signalling (Jochmanova et al.). ('tumour', 'Phenotype', 'HP:0002664', (115, 121)) ('HIF', 'Gene', (254, 257)) ('AKT', 'Gene', (205, 208)) ('tumours', 'Phenotype', 'HP:0002664', (115, 122)) ('signalling', 'MPA', (175, 185)) ('HIF', 'Gene', '11863', (254, 257)) ('PPGL', 'Gene', (160, 164)) ('mTOR', 'Gene', '56717', (213, 217)) ('mutations', 'Var', (128, 137)) ('pseudohypoxic HIF', 'Disease', 'None', (14, 31)) ('pseudohypoxic HIF', 'Disease', (14, 31)) ('Ras/MAPK', 'Protein', (190, 198)) ('AKT', 'Gene', '11651', (205, 208)) ('HIF', 'Gene', (28, 31)) ('tumour', 'Phenotype', 'HP:0002664', (97, 103)) ('HIF', 'Gene', '11863', (28, 31)) ('mTOR', 'Gene', (213, 217)) ('tumourigenesis of tumours', 'Disease', 'MESH:D009369', (97, 122)) ('tumourigenesis of tumours', 'Disease', (97, 122)) ('increased', 'PosReg', (244, 253)) 74160 29719528 The pseudo-hypoxic group was associated with dysregulation of hypoxia-inducible factor (HIF), an oxygen-liable transcription factor in the pathway of cellular responses to hypoxia, which could modulate a wide variety of target genes in the regulation of angiogenesis, apoptosis, proliferation, energy metabolism, and migration. ('pseudo-hypoxic group', 'Disease', (4, 24)) ('modulate', 'Reg', (193, 201)) ('hypoxia', 'Disease', 'MESH:D000860', (172, 179)) ('proliferation', 'CPA', (279, 292)) ('hypoxia', 'Disease', 'MESH:D000860', (62, 69)) ('hypoxia', 'Disease', (172, 179)) ('dysregulation', 'Var', (45, 58)) ('hypoxia', 'Disease', (62, 69)) ('angiogenesis', 'CPA', (254, 266)) ('apoptosis', 'CPA', (268, 277)) ('migration', 'CPA', (317, 326)) ('oxygen', 'Chemical', 'MESH:D010100', (97, 103)) 74163 29719528 assessed catecholamine biochemical phenotypes in different PHEO-PGL and found patients with VHL and SDH mutations (pseudo-hypoxia group) were characterized by noradrenergic biochemical phenotype, while patients with NF1 and RET mutations usually showed adrenergic phenotype. ('hypoxia', 'Disease', 'MESH:D000860', (122, 129)) ('mutations', 'Var', (104, 113)) ('SDH', 'Gene', '6390', (100, 103)) ('RET', 'Gene', '5979', (224, 227)) ('VHL', 'Gene', (92, 95)) ('hypoxia', 'Disease', (122, 129)) ('patients', 'Species', '9606', (78, 86)) ('SDH', 'Gene', (100, 103)) ('noradrenergic biochemical', 'MPA', (159, 184)) ('patients', 'Species', '9606', (202, 210)) ('RET', 'Gene', (224, 227)) ('NF1', 'Gene', (216, 219)) ('catecholamine', 'Chemical', 'MESH:D002395', (9, 22)) ('VHL', 'Gene', '7428', (92, 95)) ('NF1', 'Gene', '4763', (216, 219)) ('PHEO', 'Chemical', '-', (59, 63)) 74186 29662268 Herein, we present the case of a 12-yr-old Japanese girl with pheochromocytoma due to a germline mutation in the VHL (Arg161Gln). ('pheochromocytoma', 'Disease', 'MESH:D010673', (62, 78)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('VHL', 'Disease', (113, 116)) ('Arg161Gln', 'SUBSTITUTION', 'None', (118, 127)) ('due to', 'Reg', (79, 85)) ('Arg161Gln', 'Var', (118, 127)) ('girl', 'Species', '9606', (52, 56)) ('pheochromocytoma', 'Disease', (62, 78)) ('VHL', 'Disease', 'MESH:D006623', (113, 116)) 74200 29662268 It is caused by germline mutations in VHL. ('caused by', 'Reg', (6, 15)) ('VHL', 'Disease', (38, 41)) ('VHL', 'Disease', 'MESH:D006623', (38, 41)) ('germline mutations', 'Var', (16, 34)) 74201 29662268 Herein, we present a Japanese patient with pheochromocytoma due to a germline mutation in VHL. ('patient', 'Species', '9606', (30, 37)) ('due to', 'Reg', (60, 66)) ('pheochromocytoma', 'Disease', (43, 59)) ('VHL', 'Disease', (90, 93)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (43, 59)) ('VHL', 'Disease', 'MESH:D006623', (90, 93)) ('germline mutation', 'Var', (69, 86)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (43, 59)) 74232 29662268 We first evaluated the VHL, and heterozygous c.482G>A transition (p.Arg161Gln) in exon 3 was found (Fig. ('c.482G>A', 'Mutation', 'rs730882035', (45, 53)) ('VHL', 'Disease', (23, 26)) ('p.Arg161Gln', 'Mutation', 'rs730882035', (66, 77)) ('p.Arg161Gln', 'Var', (66, 77)) ('c.482G>A', 'Var', (45, 53)) ('VHL', 'Disease', 'MESH:D006623', (23, 26)) 74234 29662268 A heterozygous de novo germline variation in the VHL (c.482G>A: p.Arg161Gln) was found in this case. ('VHL', 'Disease', 'MESH:D006623', (49, 52)) ('c.482G>A', 'Mutation', 'rs730882035', (54, 62)) ('VHL', 'Disease', (49, 52)) ('c.482G>A: p.Arg161Gln', 'Var', (54, 75)) ('p.Arg161Gln', 'Mutation', 'rs730882035', (64, 75)) 74236 29662268 However, patients with retinal and cerebellar hemangioblastomas and pancreatic tumors have been reported to harbor Arg161Gln mutations. ('pancreatic tumors', 'Phenotype', 'HP:0002894', (68, 85)) ('patients', 'Species', '9606', (9, 17)) ('cerebellar hemangioblastomas', 'Phenotype', 'HP:0006880', (35, 63)) ('Arg161Gln', 'SUBSTITUTION', 'None', (115, 124)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (46, 62)) ('Arg161Gln', 'Var', (115, 124)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('pancreatic tumors', 'Disease', 'MESH:D010190', (68, 85)) ('pancreatic tumors', 'Disease', (68, 85)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) ('retinal and cerebellar hemangioblastomas', 'Disease', 'MESH:D018325', (23, 63)) 74408 29464136 Volume overload may lead to atrial or ventricular distension, predisposing patients to atrial fibrillation, and resulting in a decreased transpulmonary gradient. ('atrial fibrillation', 'Phenotype', 'HP:0005110', (87, 106)) ('decreased', 'NegReg', (127, 136)) ('Volume overload', 'Phenotype', 'HP:0011105', (0, 15)) ('patients', 'Species', '9606', (75, 83)) ('lead to', 'Reg', (20, 27)) ('transpulmonary gradient', 'MPA', (137, 160)) ('Volume', 'Var', (0, 6)) ('atrial fibrillation', 'Disease', (87, 106)) ('atrial or ventricular distension', 'MPA', (28, 60)) ('atrial fibrillation', 'Disease', 'MESH:D001281', (87, 106)) 74477 27601750 Use of phenoxybenzamine preoperatively, catecholamine-induced myopathy, and adrenal insufficiency have also been postulated as causes of severe post-operative hypotension after pheochromocytoma removal. ('hypotension', 'Disease', (159, 170)) ('adrenal insufficiency', 'Phenotype', 'HP:0000846', (76, 97)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (7, 23)) ('myopathy', 'Disease', 'MESH:D009135', (62, 70)) ('causes', 'Reg', (127, 133)) ('myopathy', 'Phenotype', 'HP:0003198', (62, 70)) ('adrenal insufficiency', 'Disease', (76, 97)) ('myopathy', 'Disease', (62, 70)) ('hypotension', 'Phenotype', 'HP:0002615', (159, 170)) ('-operative hypotension', 'Phenotype', 'HP:0001278', (148, 170)) ('phenoxybenzamine', 'Var', (7, 23)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (177, 193)) ('pheochromocytoma removal', 'Disease', 'MESH:D010673', (177, 201)) ('hypotension', 'Disease', 'MESH:D007022', (159, 170)) ('adrenal insufficiency', 'Disease', 'MESH:D000309', (76, 97)) ('pheochromocytoma removal', 'Disease', (177, 201)) ('catecholamine', 'Chemical', 'MESH:D002395', (40, 53)) 74523 26636335 Cells were counted by an automated cell counter (Countess, Invitrogen, Germany), seeded into 96-well plates at densities of 1500-3000 (BON1), 30000-50000 (GOT), 2000-4000 (NCI-H727, HepG2, Huh7), 20000 (MPC, MTT) cells per well and grown for 24h. ('NCI-H727', 'Var', (172, 180)) ('Huh7', 'Gene', (189, 193)) ('Huh7', 'Gene', '284424', (189, 193)) ('BON1', 'CellLine', 'CVCL:3985', (135, 139)) ('MTT', 'Chemical', '-', (208, 211)) ('HepG2', 'CellLine', 'CVCL:0027', (182, 187)) ('MPC', 'Chemical', '-', (203, 206)) 74533 26636335 After blocking in 2% skimmed milk powder, the membranes were incubated overnight at 4 C in appropriate dilutions of primary antibodies against pAKT (Ser473) (#4060), AKT (#2920), pERK (Thr202/Tyr204) 1/2 (#4370), pp70S6K (Thr389) (#9234), p70S6K (#9202), pEGFR (Tyr1068) (#3777), EGFR (#4267) (all from Cell Signaling, Danvers, MA), Actin (A5441) (Sigma, St. Louis, USA), ERK 1/2 (06-182) (Merck-Millipore, Darmstadt, Germany). ('p70S6K', 'Gene', '6198', (214, 220)) ('ERK 1/2', 'Gene', (372, 379)) ('#4060', 'Var', (158, 163)) ('pERK', 'Gene', (179, 183)) ('#9234', 'Var', (231, 236)) ('p70S6K', 'Gene', (239, 245)) ('pERK', 'Gene', '9451', (179, 183)) ('EGFR', 'Gene', '1956', (280, 284)) ('p70S6K', 'Gene', '6198', (239, 245)) ('EGFR', 'Gene', (280, 284)) ('EGFR', 'Gene', '1956', (256, 260)) ('p70S6K', 'Gene', (214, 220)) ('ERK 1/2', 'Gene', '5595;5594', (372, 379)) ('EGFR', 'Gene', (256, 260)) 74558 26636335 In H727, HepG2 and Huh7 cells combination treatment decreased pEGFR to a similar extent as lovastatin treatment, compared to the control (Table 1). ('EGFR', 'Gene', '1956', (63, 67)) ('HepG2', 'CellLine', 'CVCL:0027', (9, 14)) ('EGFR', 'Gene', (63, 67)) ('decreased', 'NegReg', (52, 61)) ('Huh7', 'Gene', (19, 23)) ('H727', 'Var', (3, 7)) ('lovastatin', 'Chemical', 'MESH:D008148', (91, 101)) ('Huh7', 'Gene', '284424', (19, 23)) 74566 26636335 In BON1, H727 and HepG2 cells, combination treatment was accompanied by a moderate to strong decrease of pAKT-by a stronger decrease, compared to treatment with everolimus separately. ('BON1', 'CellLine', 'CVCL:3985', (3, 7)) ('combination', 'Var', (31, 42)) ('decrease', 'NegReg', (93, 101)) ('decrease', 'NegReg', (124, 132)) ('HepG2', 'CellLine', 'CVCL:0027', (18, 23)) ('everolimus', 'Chemical', 'MESH:D000068338', (161, 171)) ('pAKT-by', 'MPA', (105, 112)) 74606 26636335 A relevant effect on AKT signaling by lovastatin and simvastatin, respectively, has previously been shown for pheochromocytoma, head and neck squamous cell carcinoma, and T790M mutant NSCLC cell lines. ('effect', 'Reg', (11, 17)) ('lovastatin', 'Chemical', 'MESH:D008148', (38, 48)) ('NSCLC', 'Phenotype', 'HP:0030358', (184, 189)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (110, 126)) ('carcinoma', 'Phenotype', 'HP:0030731', (156, 165)) ('AKT', 'MPA', (21, 24)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (142, 165)) ('neck squamous cell carcinoma', 'Disease', 'MESH:D000077195', (137, 165)) ('T790M', 'Mutation', 'rs121434569', (171, 176)) ('T790M', 'Var', (171, 176)) ('NSCLC', 'Disease', (184, 189)) ('NSCLC', 'Disease', 'MESH:D002289', (184, 189)) ('pheochromocytoma', 'Disease', (110, 126)) ('simvastatin', 'Chemical', 'MESH:D019821', (53, 64)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (110, 126)) ('neck squamous cell carcinoma', 'Disease', (137, 165)) 74678 25430999 Of patients with bone metastases, 67 (82%) received at least one form of bone-directed treatment, 50% received radiation, 45% received a bisphosphonate, 18% underwent surgery, 11% received 131I-MIBG, 5% received denosumab, and 46% were treated with more than one treatment modality. ('denosumab', 'Chemical', 'MESH:D000069448', (212, 221)) ('bisphosphonate', 'Chemical', 'MESH:D004164', (137, 151)) ('bone metastases', 'Disease', (17, 32)) ('bone metastases', 'Disease', 'MESH:D009362', (17, 32)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (189, 198)) ('men', 'Species', '9606', (268, 271)) ('patients', 'Species', '9606', (3, 11)) ('131I-MIBG', 'Var', (189, 198)) ('men', 'Species', '9606', (92, 95)) 74732 25430999 Of patients with bone metastases, 67 (82%) received at least one form of bone-directed therapy: 50% received a form of radiation, 45% received a bisphosphonate, 18% underwent surgical resection, 13% received 131I-MIBG, and 5% received denosumab. ('131I-MIBG', 'Var', (208, 217)) ('bone metastases', 'Disease', 'MESH:D009362', (17, 32)) ('bone metastases', 'Disease', (17, 32)) ('bisphosphonate', 'Chemical', 'MESH:D004164', (145, 159)) ('patients', 'Species', '9606', (3, 11)) ('denosumab', 'Chemical', 'MESH:D000069448', (235, 244)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (208, 217)) 74741 25430999 The median OS for patients with liver metastases and detected bone metastases from high-grade NECs was 15.4 months, compared with 18.2 months in patients with high-grade NECs with liver metastases and no detected bone metastases (P=0.312). ('liver metastases', 'Disease', 'MESH:D009362', (32, 48)) ('patients', 'Species', '9606', (145, 153)) ('bone metastases', 'Disease', (213, 228)) ('bone metastases', 'Disease', 'MESH:D009362', (213, 228)) ('bone metastases', 'Disease', (62, 77)) ('NECs', 'Var', (94, 98)) ('bone metastases', 'Disease', 'MESH:D009362', (62, 77)) ('liver metastases', 'Disease', (180, 196)) ('patients', 'Species', '9606', (18, 26)) ('liver metastases', 'Disease', (32, 48)) ('liver metastases', 'Disease', 'MESH:D009362', (180, 196)) ('high-grade NECs', 'Var', (83, 98)) 74766 25430999 This discrepancy between clinically detected bone metastases and post-mortem findings could be explained by observations that conventional radiography and even scintigraphy using agents such as 111In-pentreotide and 131I-MIBG underestimate bone metastases from NETs. ('131I-MIBG', 'Chemical', 'MESH:D019797', (216, 225)) ('bone metastases', 'Disease', 'MESH:D009362', (240, 255)) ('111In-pentreotide', 'Chemical', '-', (194, 211)) ('131I-MIBG', 'Var', (216, 225)) ('underestimate', 'NegReg', (226, 239)) ('bone metastases', 'Disease', (240, 255)) ('bone metastases', 'Disease', (45, 60)) ('bone metastases', 'Disease', 'MESH:D009362', (45, 60)) 74832 24591762 The latter is an autosomal dominant hereditary neoplasia syndrome which is characterized by germline mutations of the vHL gene and by the predisposition to develop CNS or retinal HBL, renal cell carcinomas and cysts, pancreatic carcinomas and cysts, pheochromocytomas, and epididymal cystadenomas. ('pancreatic carcinomas', 'Disease', (217, 238)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (250, 267)) ('retinal HBL, renal cell carcinomas', 'Disease', 'MESH:C537580', (171, 205)) ('HBL', 'Phenotype', 'HP:0010797', (179, 182)) ('mutations', 'Var', (101, 110)) ('vHL', 'Gene', (118, 121)) ('pancreatic carcinomas', 'Disease', 'MESH:C562463', (217, 238)) ('carcinoma', 'Phenotype', 'HP:0030731', (228, 237)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (184, 204)) ('epididymal cystadenomas', 'Disease', (273, 296)) ('carcinomas', 'Phenotype', 'HP:0030731', (228, 238)) ('develop', 'PosReg', (156, 163)) ('carcinoma', 'Phenotype', 'HP:0030731', (195, 204)) ('neoplasia', 'Phenotype', 'HP:0002664', (47, 56)) ('carcinomas', 'Phenotype', 'HP:0030731', (195, 205)) ('autosomal dominant hereditary neoplasia syndrome', 'Disease', 'MESH:D030342', (17, 65)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (250, 267)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (184, 205)) ('cysts', 'Disease', (243, 248)) ('pheochromocytomas', 'Disease', (250, 267)) ('autosomal dominant hereditary neoplasia syndrome', 'Disease', (17, 65)) ('epididymal cystadenomas', 'Disease', 'MESH:D003537', (273, 296)) ('cysts', 'Disease', (210, 215)) ('epididymal cystadenomas', 'Phenotype', 'HP:0030424', (273, 296)) ('vHL', 'Gene', '7428', (118, 121)) 74892 20846682 Outcomes for partial adrenalectomy in VHL patients with pheochromocytoma are encouraging at long-term follow up and should be recommended as a primary surgical approach whenever possible. ('pheochromocytoma', 'Disease', (56, 72)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (56, 72)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (56, 72)) ('partial', 'Var', (13, 20)) ('VHL', 'Disease', 'MESH:D006623', (38, 41)) ('VHL', 'Disease', (38, 41)) ('patients', 'Species', '9606', (42, 50)) 74920 20846682 Germline VHL mutations were detected in all patients. ('patients', 'Species', '9606', (44, 52)) ('detected', 'Reg', (28, 36)) ('VHL', 'Disease', 'MESH:D006623', (9, 12)) ('mutations', 'Var', (13, 22)) ('VHL', 'Disease', (9, 12)) 74922 20846682 The missense mutation at codon 167 of the VHL gene was most commonly found, occurring in fourteen of 26 patients (53.8%). ('VHL', 'Disease', (42, 45)) ('patients', 'Species', '9606', (104, 112)) ('missense mutation at codon 167', 'Var', (4, 34)) ('VHL', 'Disease', 'MESH:D006623', (42, 45)) 74950 20846682 In addition to the patient's age at diagnosis, the inherited germline mutation may predetermine the aggressiveness and recurrence risks of pheochromocytoma in certain families. ('aggressiveness', 'Phenotype', 'HP:0000718', (100, 114)) ('patient', 'Species', '9606', (19, 26)) ('pheochromocytoma', 'Disease', (139, 155)) ('aggressiveness', 'Disease', 'MESH:D001523', (100, 114)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (139, 155)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (139, 155)) ('aggressiveness', 'Disease', (100, 114)) ('inherited germline mutation', 'Var', (51, 78)) 74951 20846682 demonstrated that patients with VHL harbor different mutations which affect their phenotype, including the likelihood of developing pheochromocytoma. ('pheochromocytoma', 'Disease', 'MESH:D010673', (132, 148)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (132, 148)) ('mutations', 'Var', (53, 62)) ('patients', 'Species', '9606', (18, 26)) ('VHL', 'Disease', 'MESH:D006623', (32, 35)) ('VHL', 'Disease', (32, 35)) ('pheochromocytoma', 'Disease', (132, 148)) 74952 20846682 In their cohort, ninety-one of 92 (99%) VHL patients who developed pheochromocytomas had a missense mutation in the VHL gene. ('patients', 'Species', '9606', (44, 52)) ('VHL', 'Disease', 'MESH:D006623', (116, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (67, 83)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (67, 84)) ('VHL', 'Disease', (116, 119)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (67, 84)) ('pheochromocytomas', 'Disease', (67, 84)) ('VHL', 'Disease', (40, 43)) ('missense mutation', 'Var', (91, 108)) ('VHL', 'Disease', 'MESH:D006623', (40, 43)) 74954 20846682 Fifty-four percent of patients had a missense mutation at codon 167 and, similar to previous reports, this may represent a genetic "hot spot" in VHL patients for developing pheochromocytoma. ('patients', 'Species', '9606', (149, 157)) ('pheochromocytoma', 'Disease', (173, 189)) ('missense mutation at', 'Var', (37, 57)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (173, 189)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (173, 189)) ('patients', 'Species', '9606', (22, 30)) ('VHL', 'Disease', 'MESH:D006623', (145, 148)) ('VHL', 'Disease', (145, 148)) 74980 20846682 With at least five years of follow-up, partial adrenalectomy carries a low risk of recurrence and affords steroid independence to the majority of patients. ('steroid independence', 'MPA', (106, 126)) ('steroid', 'Chemical', 'MESH:D013256', (106, 113)) ('patients', 'Species', '9606', (146, 154)) ('partial', 'Var', (39, 46)) 74981 20846682 Patients who are diagnosed with pheochromocytoma at a young age and have a germline missense mutation of the VHL gene may be at a higher risk of tumor recurrence. ('VHL', 'Disease', (109, 112)) ('VHL', 'Disease', 'MESH:D006623', (109, 112)) ('tumor', 'Disease', 'MESH:D009369', (145, 150)) ('pheochromocytoma', 'Disease', (32, 48)) ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (32, 48)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (32, 48)) ('tumor', 'Disease', (145, 150)) ('Patients', 'Species', '9606', (0, 8)) ('missense mutation', 'Var', (84, 101)) 75041 33497361 Developmental vascular malformations in EPAS1 gain-of-function syndrome Mutations in EPAS1, encoding hypoxia-inducible factor-2alpha (HIF-2alpha), were previously identified in a syndrome of multiple paragangliomas, somatostatinoma, and polycythemia. ('Developmental vascular malformations', 'Disease', (0, 36)) ('gain-of-function syndrome', 'Disease', (46, 71)) ('EPAS1', 'Gene', (85, 90)) ('Developmental vascular malformations', 'Disease', 'MESH:D000014', (0, 36)) ('gain-of-function syndrome', 'Disease', 'MESH:D015430', (46, 71)) ('hypoxia-inducible factor-2alpha', 'Gene', '2034', (101, 132)) ('polycythemia', 'Disease', (237, 249)) ('hypoxia-inducible factor-2alpha', 'Gene', (101, 132)) ('polycythemia', 'Disease', 'MESH:D011086', (237, 249)) ('EPAS1', 'Gene', '2034', (40, 45)) ('HIF-2alpha', 'Gene', '2034', (134, 144)) ('Mutations', 'Var', (72, 81)) ('EPAS1', 'Gene', '2034', (85, 90)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (191, 214)) ('somatostatinoma', 'Disease', 'MESH:D013005', (216, 231)) ('syndrome', 'Disease', (179, 187)) ('polycythemia', 'Phenotype', 'HP:0001901', (237, 249)) ('somatostatinoma', 'Disease', (216, 231)) ('EPAS1', 'Gene', (40, 45)) ('multiple paragangliomas', 'Disease', (191, 214)) ('HIF-2alpha', 'Gene', (134, 144)) ('paraganglioma', 'Phenotype', 'HP:0002668', (200, 213)) ('paragangliomas', 'Phenotype', 'HP:0002668', (200, 214)) 75043 33497361 Patients referred to the NIH for new, recurrent, and/or metastatic paraganglioma or pheochromocytoma were confirmed for EPAS1 gain-of-function mutation; imaging was evaluated for vascular malformations. ('paraganglioma', 'Disease', (67, 80)) ('EPAS1', 'Gene', (120, 125)) ('pheochromocytoma', 'Disease', (84, 100)) ('mutation', 'Var', (143, 151)) ('gain-of-function', 'PosReg', (126, 142)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (84, 100)) ('vascular malformations', 'Disease', (179, 201)) ('Patients', 'Species', '9606', (0, 8)) ('paraganglioma', 'Disease', 'MESH:D010235', (67, 80)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (84, 100)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) ('vascular malformations', 'Disease', 'MESH:D000014', (179, 201)) 75045 33497361 Further, we evaluated retinas from corresponding developmental time points (P7, P14, and P21) and the adult dura via immunofluorescent labeling of vessels and confocal imaging. ('P21', 'Gene', (89, 92)) ('P7', 'Var', (76, 78)) ('P21', 'Gene', '644914', (89, 92)) 75046 33497361 We identified a spectrum of vascular malformations in all 9 syndromic patients and in all our tested mutant mice. ('patients', 'Species', '9606', (70, 78)) ('vascular malformations', 'Disease', 'MESH:D000014', (28, 50)) ('syndromic', 'Disease', 'MESH:D061325', (60, 69)) ('mice', 'Species', '10090', (108, 112)) ('mutant', 'Var', (101, 107)) ('vascular malformations', 'Disease', (28, 50)) ('syndromic', 'Disease', (60, 69)) 75047 33497361 Patient vessels had higher variant allele frequency than adjacent normal tissue. ('variant', 'Var', (27, 34)) ('higher', 'PosReg', (20, 26)) ('Patient', 'Species', '9606', (0, 7)) 75050 33497361 We discovered vascular malformations due to failure of developmental vascular regression in patients with EPAS1 gain-of-function mutation syndrome and the corresponding transgenic mouse model. ('mutation syndrome', 'Var', (129, 146)) ('vascular malformations', 'Disease', 'MESH:D000014', (14, 36)) ('gain-of-function', 'PosReg', (112, 128)) ('EPAS1', 'Gene', (106, 111)) ('patients', 'Species', '9606', (92, 100)) ('mouse', 'Species', '10090', (180, 185)) ('developmental vascular regression', 'Phenotype', 'HP:0002376', (55, 88)) ('developmental vascular regression', 'CPA', (55, 88)) ('vascular malformations', 'Disease', (14, 36)) 75051 33497361 We previously identified the syndrome of multiple paragangliomas, somatostatinoma, and polycythemia resulting from postzygotic EPAS1 gain-of-function mutations. ('multiple paragangliomas', 'Disease', (41, 64)) ('gain-of-function', 'PosReg', (133, 149)) ('EPAS1', 'Gene', (127, 132)) ('syndrome', 'Disease', (29, 37)) ('polycythemia', 'Phenotype', 'HP:0001901', (87, 99)) ('polycythemia', 'Disease', 'MESH:D011086', (87, 99)) ('polycythemia', 'Disease', (87, 99)) ('mutations', 'Var', (150, 159)) ('paraganglioma', 'Phenotype', 'HP:0002668', (50, 63)) ('somatostatinoma', 'Disease', 'MESH:D013005', (66, 81)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (41, 64)) ('paragangliomas', 'Phenotype', 'HP:0002668', (50, 64)) ('somatostatinoma', 'Disease', (66, 81)) 75052 33497361 Mutations of the oxygen degradation domain (ODD) of hypoxia-inducible factor-2alpha (HIF-2alpha), encoded by EPAS1, have been shown to impair hydroxylation by prolyl hydroxylase domain-containing protein 2 (PHD2) and subsequent association with the von Hippel-Lindau (VHL) protein. ('PHD2', 'Gene', (207, 211)) ('VHL', 'Gene', (268, 271)) ('PHD2', 'Gene', '54583', (207, 211)) ('von Hippel-Lindau', 'Gene', '7428', (249, 266)) ('hydroxylation', 'MPA', (142, 155)) ('hypoxia-inducible factor-2alpha', 'Gene', '2034', (52, 83)) ('hypoxia-inducible factor-2alpha', 'Gene', (52, 83)) ('VHL', 'Gene', '7428', (268, 271)) ('oxygen', 'Chemical', 'MESH:D010100', (17, 23)) ('prolyl hydroxylase domain-containing protein 2', 'Gene', '54583', (159, 205)) ('Mutations', 'Var', (0, 9)) ('von Hippel-Lindau', 'Gene', (249, 266)) ('HIF-2alpha', 'Gene', (85, 95)) ('impair', 'NegReg', (135, 141)) ('association', 'Interaction', (228, 239)) ('prolyl hydroxylase domain-containing protein 2', 'Gene', (159, 205)) ('HIF-2alpha', 'Gene', '2034', (85, 95)) 75056 33497361 HIF-2alpha signaling has previously been studied by either deletion of HIF-2alpha or inactivation of PHD2, which is thought to provide gain-of-function of HIF-2alpha. ('PHD2', 'Gene', (101, 105)) ('HIF-2alpha', 'Gene', (155, 165)) ('PHD2', 'Gene', '54583', (101, 105)) ('inactivation', 'Var', (85, 97)) ('gain-of-function', 'PosReg', (135, 151)) ('HIF-2alpha', 'Gene', '2034', (0, 10)) ('HIF-2alpha', 'Gene', '2034', (155, 165)) ('HIF-2alpha', 'Gene', (71, 81)) ('HIF-2alpha', 'Gene', '2034', (71, 81)) ('deletion', 'Var', (59, 67)) ('HIF-2alpha', 'Gene', (0, 10)) 75058 33497361 Thus, this syndrome, in which the ODD of HIF-2alpha is mutated, is unique in that it is a true gain of function. ('mutated', 'Var', (55, 62)) ('HIF-2alpha', 'Gene', (41, 51)) ('HIF-2alpha', 'Gene', '2034', (41, 51)) ('gain', 'PosReg', (95, 99)) 75095 33497361 Variant (P531S) allele frequency quantified in vessels and adjacent normal tissue from tumor specimens of 2 patients by manual microdissection from paraffin-embedded sections and digital droplet PCR (ddPCR) demonstrated that the variant allele frequency in the vessel is higher than in adjacent normal tissue. ('tumor', 'Phenotype', 'HP:0002664', (87, 92)) ('paraffin', 'Chemical', 'MESH:D010232', (148, 156)) ('tumor', 'Disease', (87, 92)) ('P531S', 'Mutation', 'p.P531S', (9, 14)) ('tumor', 'Disease', 'MESH:D009369', (87, 92)) ('patients', 'Species', '9606', (108, 116)) ('P531S', 'Var', (9, 14)) 75100 33497361 Intravital 2-photon microscopy of leptomeningeal and parenchymal vessels through a thinned skull window in the transgenic mouse model, following retro-orbital intravenous injection of tomato lectin DyLight 488 and Evans blue, demonstrated increased density and tortuosity of pial arterioles and venules as well as parenchymal capillaries in the mutant compared with the littermate control (Figure 5A). ('Evans blue', 'Chemical', '-', (214, 224)) ('density', 'CPA', (249, 256)) ('thinned skull', 'Phenotype', 'HP:0010539', (83, 96)) ('tortuosity', 'CPA', (261, 271)) ('mutant', 'Var', (345, 351)) ('increased', 'PosReg', (239, 248)) ('tomato', 'Species', '4081', (184, 190)) ('mouse', 'Species', '10090', (122, 127)) 75120 33497361 In fact, our measurement of allele frequency in tumor vessels confirmed a higher degree of mosaicism in vessels compared with nontumor adjacent normal tissue. ('tumor', 'Disease', (48, 53)) ('tumor', 'Disease', 'MESH:D009369', (129, 134)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('tumor', 'Disease', 'MESH:D009369', (48, 53)) ('tumor', 'Disease', (129, 134)) ('tumor', 'Phenotype', 'HP:0002664', (48, 53)) ('mosaicism', 'Var', (91, 100)) 75122 33497361 These newly observed phenotypes together with those previously reported, including paraganglioma, polycythemia, and duodenal ampullary somatostatinoma, suggest that the initial somatic mutation arises early in development in a precursor cell lineage that is capable of giving rise to angioblasts, mesenchymal cells, and neural crest. ('angioblasts', 'CPA', (284, 295)) ('polycythemia', 'Disease', (98, 110)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('somatostatinoma', 'Disease', (135, 150)) ('somatostatinoma', 'Disease', 'MESH:D013005', (135, 150)) ('polycythemia', 'Phenotype', 'HP:0001901', (98, 110)) ('mutation', 'Var', (185, 193)) ('paraganglioma', 'Disease', (83, 96)) ('polycythemia', 'Disease', 'MESH:D011086', (98, 110)) ('paraganglioma', 'Disease', 'MESH:D010235', (83, 96)) 75123 33497361 However, the variant allele frequency measured in the patient samples, which demonstrates that surrounding normal tissue has a much lower variant allele frequency than tumor vessels, suggests that there may be a cell- or tissue-specific process that selects for or against proliferation of cells with the EPAS1 gain-of-function mutation. ('patient', 'Species', '9606', (54, 61)) ('tumor', 'Disease', (168, 173)) ('EPAS1', 'Gene', (305, 310)) ('mutation', 'Var', (328, 336)) ('gain-of-function', 'PosReg', (311, 327)) ('tumor', 'Disease', 'MESH:D009369', (168, 173)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) 75125 33497361 They may occur in an autosomal dominant inherited or somatic fashion owing to mutation in the CCM1-3 genes. ('CCM1-3', 'Gene', (94, 100)) ('occur', 'Reg', (9, 14)) ('CCM1-3', 'Gene', '889;83605;11235', (94, 100)) ('mutation', 'Var', (78, 86)) 75133 33497361 Following the recent findings of posterior fossa and spine malformations in patients 1-8 and anomalies of the choroid and retina in patients 1, 2, and 4, 8 of 9 patients underwent ophthalmologic exam, which included fundoscopy and optical coherence tomography imaging, and all patients underwent further neurologic imaging evaluation. ('patients', 'Species', '9606', (76, 84)) ('malformations', 'Disease', 'MESH:D000014', (59, 72)) ('anomalies', 'Var', (93, 102)) ('malformations', 'Disease', (59, 72)) ('posterior', 'Disease', (33, 42)) ('patients', 'Species', '9606', (277, 285)) ('patients', 'Species', '9606', (161, 169)) ('anomalies of the choroid', 'Phenotype', 'HP:0000610', (93, 117)) ('patients', 'Species', '9606', (132, 140)) 75136 33497361 Mutations of the ODD of HIF-2alpha were confirmed in the genomic DNA extracted from either multiple tumor tissues and/or leukocytes in each patient (Supplemental Table 1) by either Sanger sequencing or peptide nucleic acid sequencing as previously described. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('HIF-2alpha', 'Gene', '2034', (24, 34)) ('tumor', 'Disease', (100, 105)) ('patient', 'Species', '9606', (140, 147)) ('Mutations', 'Var', (0, 9)) ('HIF-2alpha', 'Gene', (24, 34)) ('tumor', 'Disease', 'MESH:D009369', (100, 105)) 75139 33497361 A point mutation, A529V (GCA>GTA), corresponding to the mutation detected in the index patient, was introduced in exon 12 of Epas1 in 1 allele distal to an inserted reverse-oriented neomycin resistance gene cassette flanked by loxP sites in intron 11, which in its native state is expected to inhibit transcription of the altered Epas1 allele. ('Epas1', 'Gene', (330, 335)) ('A529V', 'Mutation', 'p.A529V', (18, 23)) ('A529V', 'Var', (18, 23)) ('transcription', 'MPA', (301, 314)) ('neomycin', 'Chemical', 'MESH:D009355', (182, 190)) ('patient', 'Species', '9606', (87, 94)) ('Epas1', 'Gene', (125, 130)) ('inhibit', 'NegReg', (293, 300)) 75142 33497361 This yields 4 potential categories of mice from each litter: (a) Epas1+/Neo-A529V EIIa-Cre, referred to as mutant; (b) Epas1+/+ EIIa-Cre, referred to as the Cre-only control; (c) the Epas1+/Neo-A529V, referred to as heterozygous mouse; and (d) Epas1+/+, referred to as WT control (variant negative, Cre negative). ('mice', 'Species', '10090', (38, 42)) ('Epas1+/Neo-A529V', 'Var', (65, 81)) ('A529V', 'Mutation', 'p.A529V', (76, 81)) ('A529V', 'Mutation', 'p.A529V', (194, 199)) ('mouse', 'Species', '10090', (229, 234)) ('negative', 'NegReg', (289, 297)) ('Epas1+/+ EIIa-Cre', 'Var', (119, 136)) 75165 33497361 The probe for the WT allele was labeled with hexachloro fluorescence, and the probe for the EPAS1 mutant allele (P531S) was labeled with fluorescein fluorescence. ('fluorescein', 'Chemical', 'MESH:D019793', (137, 148)) ('EPAS1', 'Gene', (92, 97)) ('P531S', 'Var', (113, 118)) ('hexachloro fluorescence', 'MPA', (45, 68)) ('hexachloro', 'Chemical', '-', (45, 55)) ('P531S', 'Mutation', 'p.P531S', (113, 118)) 75239 33422846 They harbor specific activating mutations in the KIT (KIT positive (CD117)) or platelet-derived growth factor receptor a (PDGFRA) receptor tyrosine kinases, which makes them responsive to pharmacologic inhibitors, such as imatinib mesylate and sunitinib malate. ('CD117', 'Gene', (68, 73)) ('activating', 'PosReg', (21, 31)) ('KIT', 'Gene', '3815', (54, 57)) ('sunitinib malate', 'Chemical', 'MESH:D000077210', (244, 260)) ('responsive', 'MPA', (174, 184)) ('KIT', 'Gene', (54, 57)) ('mutations', 'Var', (32, 41)) ('PDGFRA', 'Gene', (122, 128)) ('imatinib mesylate', 'Chemical', 'MESH:D000068877', (222, 239)) ('KIT', 'Gene', '3815', (49, 52)) ('PDGFRA', 'Gene', '5156', (122, 128)) ('CD117', 'Gene', '3815', (68, 73)) ('KIT', 'Gene', (49, 52)) 75288 32751501 There are several familial syndromes (inherited tumor syndromes) with disease-causing mutations that are associated with PPGL (e.g., RET, SDHx, VHL, NF1, MAX and TMEM127). ('VHL', 'Gene', '7428', (144, 147)) ('mutations', 'Var', (86, 95)) ('PPGL', 'Chemical', '-', (121, 125)) ('inherited tumor syndromes', 'Disease', 'None', (38, 63)) ('TMEM127', 'Gene', (162, 169)) ('SDHx', 'Disease', (138, 142)) ('familial syndrome', 'Disease', (18, 35)) ('RET', 'Gene', (133, 136)) ('tumor', 'Phenotype', 'HP:0002664', (48, 53)) ('TMEM127', 'Gene', '55654', (162, 169)) ('familial syndrome', 'Disease', 'MESH:D061325', (18, 35)) ('VHL', 'Gene', (144, 147)) ('NF1', 'Gene', (149, 152)) ('RET', 'Gene', '5979', (133, 136)) ('PPGL', 'Gene', (121, 125)) ('inherited tumor syndromes', 'Disease', (38, 63)) ('NF1', 'Gene', '4763', (149, 152)) 75292 32751501 For example, 123I-MIBG functional imaging is not useful in patients with SDHx mutations. ('123I-MIBG', 'Chemical', 'MESH:D019797', (13, 22)) ('SDHx', 'Gene', (73, 77)) ('patients', 'Species', '9606', (59, 67)) ('mutations', 'Var', (78, 87)) 75307 32751501 Clinical and echocardiographic features may simulate that of hypertrophic obstructive cardiomyopathy, and improve or resolve after resection of the PPGL. ('PPGL', 'Gene', (148, 152)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (86, 100)) ('improve', 'PosReg', (106, 113)) ('resection', 'Var', (131, 140)) ('hypertrophic obstructive cardiomyopathy', 'Disease', 'MESH:D002312', (61, 100)) ('hypertrophic obstructive cardiomyopathy', 'Disease', (61, 100)) ('hypertrophic obstructive cardiomyopathy', 'Phenotype', 'HP:0001639', (61, 100)) ('PPGL', 'Chemical', '-', (148, 152)) 75356 32751501 These changes may precipitate ventricular arrhythmias as torsade de pointes, which may degenerate to ventricular fibrillation, and potentially death. ('ventricular fibrillation', 'Disease', (101, 125)) ('arrhythmias', 'Phenotype', 'HP:0011675', (42, 53)) ('torsade de pointes', 'Disease', 'MESH:D016171', (57, 75)) ('ventricular arrhythmias', 'Disease', 'MESH:D001145', (30, 53)) ('ventricular arrhythmias', 'Phenotype', 'HP:0004308', (30, 53)) ('precipitate', 'Reg', (18, 29)) ('death', 'Disease', 'MESH:D003643', (143, 148)) ('changes', 'Var', (6, 13)) ('death', 'Disease', (143, 148)) ('arrhythmia', 'Phenotype', 'HP:0011675', (42, 52)) ('ventricular arrhythmias', 'Disease', (30, 53)) ('ventricular fibrillation', 'Phenotype', 'HP:0001663', (101, 125)) ('ventricular fibrillation', 'Disease', 'MESH:D014693', (101, 125)) ('torsade de pointes', 'Disease', (57, 75)) ('torsade de pointes', 'Phenotype', 'HP:0001664', (57, 75)) 75367 32751501 reported on recurrent painless myocardial infarction based on ECG changes in a patient with a pheochromocytoma. ('pheochromocytoma', 'Disease', (94, 110)) ('painless myocardial infarction', 'Disease', 'MESH:D009203', (22, 52)) ('painless myocardial infarction', 'Disease', (22, 52)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (94, 110)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (94, 110)) ('pain', 'Phenotype', 'HP:0012531', (22, 26)) ('patient', 'Species', '9606', (79, 86)) ('changes', 'Var', (66, 73)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (31, 52)) 75417 32751501 Performing C-MRI in patients with PPGLs, cardiac involvement will be detected frequently with changes consistent with myocarditis, focal and diffuse fibrosis, and left ventricular dysfunction. ('fibrosis', 'Disease', 'MESH:D005355', (149, 157)) ('detected', 'Reg', (69, 77)) ('fibrosis', 'Disease', (149, 157)) ('left ventricular dysfunction', 'Disease', (163, 191)) ('myocarditis', 'Disease', 'MESH:D009205', (118, 129)) ('left ventricular dysfunction', 'Phenotype', 'HP:0005162', (163, 191)) ('PPGLs', 'Var', (34, 39)) ('cardiac involvement', 'Disease', (41, 60)) ('left ventricular dysfunction', 'Disease', 'MESH:D018487', (163, 191)) ('focal', 'Disease', (131, 136)) ('PPGLs', 'Chemical', '-', (34, 39)) ('patients', 'Species', '9606', (20, 28)) ('myocarditis', 'Phenotype', 'HP:0012819', (118, 129)) ('cardiac involvement', 'Disease', 'MESH:D006331', (41, 60)) ('myocarditis', 'Disease', (118, 129)) 75442 32751501 reported on a 13-year-old boy with acute hemiparesis due to occlusion of M1 segment of the right middle cerebral artery causing infarct involving the right frontal and anterior temporal lobes, including the basal ganglia and insula. ('boy', 'Species', '9606', (26, 29)) ('acute hemiparesis', 'Disease', 'MESH:D010291', (35, 52)) ('occlusion', 'Var', (60, 69)) ('acute hemiparesis', 'Disease', (35, 52)) ('infarct', 'Disease', 'MESH:D007238', (128, 135)) ('hemiparesis', 'Phenotype', 'HP:0001269', (41, 52)) ('infarct', 'Disease', (128, 135)) 75454 32751501 In one study constituting of 50 patients with PPGL, 56% had pheochromocytoma and 44% had paraganglioma. ('patients', 'Species', '9606', (32, 40)) ('PPGL', 'Var', (46, 50)) ('paraganglioma', 'Phenotype', 'HP:0002668', (89, 102)) ('PPGL', 'Chemical', '-', (46, 50)) ('paraganglioma', 'Disease', (89, 102)) ('pheochromocytoma', 'Disease', (60, 76)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (60, 76)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (60, 76)) ('paraganglioma', 'Disease', 'MESH:D010235', (89, 102)) 75469 32751501 In patients dying suddenly due to PPGLs, the cardiac involvement may be detected by observation of CBN or myofibrillar degeneration. ('myofibrillar degeneration', 'Disease', (106, 131)) ('myofibrillar degeneration', 'Disease', 'MESH:C580316', (106, 131)) ('PPGLs', 'Var', (34, 39)) ('cardiac involvement', 'Disease', (45, 64)) ('myofibrillar degeneration', 'Phenotype', 'HP:0003715', (106, 131)) ('PPGLs', 'Chemical', '-', (34, 39)) ('patients', 'Species', '9606', (3, 11)) ('CBN', 'Disease', (99, 102)) ('CBN', 'Chemical', '-', (99, 102)) ('cardiac involvement', 'Disease', 'MESH:D006331', (45, 64)) 75491 32751501 have also demonstrated rapid clearance of I-123-MIBG from the heart in patients with pheochromocytoma. ('patients', 'Species', '9606', (71, 79)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (85, 101)) ('I-123-MIBG', 'Var', (42, 52)) ('pheochromocytoma', 'Disease', (85, 101)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (85, 101)) ('I-123-MIBG', 'Chemical', '-', (42, 52)) 75501 32751501 The two most commonly used drugs are phenoxybenzamine, which is a nonselective and noncompetitive alpha-1 and alpha-2 adrenergic receptor blocker. ('alpha-1', 'Gene', '597', (98, 105)) ('alpha-1', 'Gene', (98, 105)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (37, 53)) ('phenoxybenzamine', 'Var', (37, 53)) 75504 32751501 However, phenoxybenzamine was more effective in preventing intraoperative systolic blood pressure above the target range and hemodynamic instability. ('phenoxybenzamine', 'Var', (9, 25)) ('intraoperative', 'MPA', (59, 73)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (9, 25)) 75527 32062700 Sixty-four pediatric PHEO/PGL patients with SDHB germline mutations were included in the present study. ('mutations', 'Var', (58, 67)) ('PGL', 'Phenotype', 'HP:0002668', (26, 29)) ('SDHB', 'Gene', '6390', (44, 48)) ('SDHB', 'Gene', (44, 48)) ('patients', 'Species', '9606', (30, 38)) ('PHEO', 'Phenotype', 'HP:0002666', (21, 25)) 75532 32062700 The present report has highlighted several important aspects in the management of pediatric patients with SDHB mutations associated-PHEO/PGL. ('mutations', 'Var', (111, 120)) ('PGL', 'Phenotype', 'HP:0002668', (137, 140)) ('associated-PHEO/PGL', 'Disease', (121, 140)) ('PHEO', 'Phenotype', 'HP:0002666', (132, 136)) ('SDHB', 'Gene', '6390', (106, 110)) ('age', 'Gene', '5973', (71, 74)) ('patients', 'Species', '9606', (92, 100)) ('associated-PHEO/PGL', 'Reg', (121, 140)) ('SDHB', 'Gene', (106, 110)) ('age', 'Gene', (71, 74)) 75533 32062700 Initial diagnostic evaluation of SDHB mutation carriers should be started at age of 5-6 years with initial work-up focusing on abdominal region. ('age', 'Gene', (77, 80)) ('SDHB', 'Gene', '6390', (33, 37)) ('age', 'Gene', '5973', (77, 80)) ('SDHB', 'Gene', (33, 37)) ('mutation', 'Var', (38, 46)) 75539 32062700 Approximately 10-20% of all PHEOs/PGLs are diagnosed in pediatric population with germline mutations reported in up to 80% of them with the predominance of VHL (von Hippel-Lindau gene) followed by SDHB, SDHD (succinate dehydrogenase subunit B and D), and NF1 (neurofibromin 1) mutations . ('PHEO', 'Phenotype', 'HP:0002666', (28, 32)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (161, 178)) ('von Hippel-Lindau', 'Disease', (161, 178)) ('neurofibromin 1', 'Gene', '4763', (260, 275)) ('SDHB', 'Gene', '6390', (197, 201)) ('VHL', 'Gene', '7428', (156, 159)) ('PGL', 'Phenotype', 'HP:0002668', (34, 37)) ('SDHB', 'Gene', (197, 201)) ('NF1', 'Gene', '4763', (255, 258)) ('mutations', 'Var', (277, 286)) ('NF1', 'Gene', (255, 258)) ('mutations', 'Var', (91, 100)) ('SDHD', 'Gene', (203, 207)) ('SDHD', 'Gene', '6392', (203, 207)) ('neurofibromin 1', 'Gene', (260, 275)) ('VHL', 'Gene', (156, 159)) 75542 32062700 More recent reports have observed a cohort of 26 (23 SDHB- and 3 SDHD-mutated) and 42 (25 SDHB- and 17 SDHD-mutated) young patients with familial PGL syndrome type 1 and 4 with finding of more frequent disease recurrence in patients harboring SDHD germline mutations, and significant increase in the metastasis incidence and mortality in patients with SDHB germline mutations compared to other germline mutations or sporadic tumors. ('SDHB', 'Gene', (90, 94)) ('SDHB', 'Gene', (352, 356)) ('familial PGL syndrome', 'Disease', (137, 158)) ('increase', 'PosReg', (284, 292)) ('SDHD', 'Gene', '6392', (103, 107)) ('SDHD', 'Gene', (65, 69)) ('patients', 'Species', '9606', (338, 346)) ('mortality', 'Disease', 'MESH:D003643', (325, 334)) ('SDHB', 'Gene', '6390', (53, 57)) ('germline', 'Var', (357, 365)) ('tumors', 'Phenotype', 'HP:0002664', (425, 431)) ('metastasis incidence', 'CPA', (300, 320)) ('patients', 'Species', '9606', (123, 131)) ('tumor', 'Phenotype', 'HP:0002664', (425, 430)) ('SDHD', 'Gene', (103, 107)) ('tumors', 'Disease', (425, 431)) ('SDHD', 'Gene', '6392', (243, 247)) ('SDHB', 'Gene', (53, 57)) ('patients', 'Species', '9606', (224, 232)) ('PGL', 'Phenotype', 'HP:0002668', (146, 149)) ('SDHB', 'Gene', '6390', (90, 94)) ('tumors', 'Disease', 'MESH:D009369', (425, 431)) ('SDHB', 'Gene', '6390', (352, 356)) ('SDHD', 'Gene', (243, 247)) ('mortality', 'Disease', (325, 334)) ('SDHD', 'Gene', '6392', (65, 69)) ('familial PGL syndrome', 'Disease', 'MESH:D010235', (137, 158)) 75543 32062700 Another study on 49 patients with SDHB mutations and 35 sporadic cases demonstrated earlier onset of PHEO/PGL, increased local recurrence, distance metastasis, and lesser median disease-free interval in patients with SDHB mutations. ('increased', 'PosReg', (111, 120)) ('distance metastasis', 'CPA', (139, 158)) ('PHEO', 'Phenotype', 'HP:0002666', (101, 105)) ('PGL', 'Phenotype', 'HP:0002668', (106, 109)) ('PHEO/PGL', 'Disease', (101, 109)) ('mutations', 'Var', (39, 48)) ('local recurrence', 'CPA', (121, 137)) ('patients', 'Species', '9606', (203, 211)) ('SDHB', 'Gene', '6390', (217, 221)) ('SDHB', 'Gene', '6390', (34, 38)) ('patients', 'Species', '9606', (20, 28)) ('SDHB', 'Gene', (34, 38)) ('SDHB', 'Gene', (217, 221)) 75544 32062700 Previous studies proposed SDHB mutations an independent prognostic factor for survival in patients with metastatic PHEO/PGL, but Hescot et al. ('metastatic PHEO/PGL', 'Disease', (104, 123)) ('mutations', 'Var', (31, 40)) ('PGL', 'Phenotype', 'HP:0002668', (120, 123)) ('SDHB', 'Gene', '6390', (26, 30)) ('PHEO', 'Phenotype', 'HP:0002666', (115, 119)) ('SDHB', 'Gene', (26, 30)) ('patients', 'Species', '9606', (90, 98)) 75546 32062700 However, SDHB mutation status was demonstrated to be independently associated with metastatic disease by Crona et al.. ('SDHB', 'Gene', '6390', (9, 13)) ('mutation status', 'Var', (14, 29)) ('SDHB', 'Gene', (9, 13)) ('metastatic disease', 'Disease', (83, 101)) ('associated', 'Reg', (67, 77)) 75551 32062700 Our research was a single-center study, the second largest so far on these pediatric tumors, which allowed us to outline some important conclusions for the management of pediatric patients with SDHB mutations. ('SDHB', 'Gene', '6390', (194, 198)) ('tumors', 'Disease', 'MESH:D009369', (85, 91)) ('SDHB', 'Gene', (194, 198)) ('age', 'Gene', (159, 162)) ('patients', 'Species', '9606', (180, 188)) ('mutations', 'Var', (199, 208)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('tumors', 'Phenotype', 'HP:0002664', (85, 91)) ('age', 'Gene', '5973', (159, 162)) ('tumors', 'Disease', (85, 91)) 75552 32062700 Sixty-six SDHB mutation carriers with histologically documented PHEOs/PGLs who presented with their primary tumor before 20 years of age, which was defined as a pediatric/adolescent tumor, were selected for this study. ('adolescent tumor', 'Disease', 'MESH:D063766', (171, 187)) ('mutation', 'Var', (15, 23)) ('tumor', 'Disease', 'MESH:D009369', (108, 113)) ('tumor', 'Disease', (182, 187)) ('age', 'Gene', (133, 136)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('PGL', 'Phenotype', 'HP:0002668', (70, 73)) ('age', 'Gene', '5973', (133, 136)) ('tumor', 'Disease', (108, 113)) ('PHEO', 'Phenotype', 'HP:0002666', (64, 68)) ('adolescent tumor', 'Disease', (171, 187)) ('SDHB', 'Gene', '6390', (10, 14)) ('tumor', 'Disease', 'MESH:D009369', (182, 187)) ('SDHB', 'Gene', (10, 14)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) 75556 32062700 Genetic testing for germline mutations in the SDHB, SDHC, SDHD, and VHL genes was performed at the Department of Human Genetics of the Pittsburgh University Medical Center, Children's Hospital of Philadelphia, and at Mayo Clinic Laboratories, Minnesota, USA as described elsewhere. ('SDHB', 'Gene', '6390', (46, 50)) ('Mayo', 'Species', '162683', (217, 221)) ('Human', 'Species', '9606', (113, 118)) ('SDHB', 'Gene', (46, 50)) ('mutations', 'Var', (29, 38)) ('SDHC', 'Gene', (52, 56)) ('VHL', 'Gene', (68, 71)) ('SDHC', 'Gene', '6391', (52, 56)) ('VHL', 'Gene', '7428', (68, 71)) ('Children', 'Species', '9606', (173, 181)) ('SDHD', 'Gene', '6392', (58, 62)) ('SDHD', 'Gene', (58, 62)) 75559 32062700 Patients with typical clinical phenotype were tested for the presence of EPAS1 and RET mutations. ('RET', 'Gene', '5979', (83, 86)) ('Patients', 'Species', '9606', (0, 8)) ('RET', 'Gene', (83, 86)) ('EPAS1', 'Gene', '2034', (73, 78)) ('mutations', 'Var', (87, 96)) ('EPAS1', 'Gene', (73, 78)) 75578 32062700 The endpoints evaluated in study included: age at initial symptoms, age of initial diagnosis, age at diagnosis of recurrent disease, interval between initial diagnosis and recurrence, age at diagnosis of metastatic disease, interval between initial diagnosis and occurrence of metastases (or last follow-up if no metastatic disease), interval between initial diagnosis and death (or last follow-up if still alive), and the effect of the type of SDHB mutation on patients' outcome. ('age', 'Gene', '5973', (94, 97)) ('age', 'Gene', (43, 46)) ('age', 'Gene', (68, 71)) ('SDHB', 'Gene', '6390', (445, 449)) ('SDHB', 'Gene', (445, 449)) ('age', 'Gene', '5973', (184, 187)) ('metastases', 'Disease', (277, 287)) ('death', 'Disease', 'MESH:D003643', (373, 378)) ('patients', 'Species', '9606', (462, 470)) ('death', 'Disease', (373, 378)) ('mutation', 'Var', (450, 458)) ('age', 'Gene', '5973', (43, 46)) ('age', 'Gene', '5973', (68, 71)) ('age', 'Gene', (94, 97)) ('metastases', 'Disease', 'MESH:D009362', (277, 287)) ('age', 'Gene', (184, 187)) 75584 32062700 Among the group of patients with pediatric/adolescent PHEO/PGL, 66 (52.8%) were found to have germline SDHB mutations. ('SDHB', 'Gene', (103, 107)) ('patients', 'Species', '9606', (19, 27)) ('mutations', 'Var', (108, 117)) ('PHEO', 'Phenotype', 'HP:0002666', (54, 58)) ('PGL', 'Phenotype', 'HP:0002668', (59, 62)) ('SDHB', 'Gene', '6390', (103, 107)) 75587 32062700 Patients with SDHB mutations (n = 66) were selected for further analyses in this study. ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', '6390', (14, 18)) ('SDHB', 'Gene', (14, 18)) ('mutations', 'Var', (19, 28)) 75620 32062700 Kaplan-Meier analysis of metastasis-free survival showed that 50% of pediatric patients with SDHB mutation will develop metastasis in 7 years from diagnosis (Figure 3a). ('mutation', 'Var', (98, 106)) ('SDHB', 'Gene', (93, 97)) ('metastasis', 'CPA', (120, 130)) ('patients', 'Species', '9606', (79, 87)) ('SDHB', 'Gene', '6390', (93, 97)) ('develop', 'PosReg', (112, 119)) 75624 32062700 In the present study, patients had 31 different SDHB mutations (Table 2). ('SDHB', 'Gene', '6390', (48, 52)) ('patients', 'Species', '9606', (22, 30)) ('SDHB', 'Gene', (48, 52)) ('mutations', 'Var', (53, 62)) 75625 32062700 Ten (15.63%) had large deletion, 3 (4.69%) had frameshift mutations, 26 (40.63%) had missense mutation, 20 (31.25%) had nonsense mutation, and 4 patients (6.25%) had splice-site mutation. ('patients', 'Species', '9606', (145, 153)) ('large deletion', 'Var', (17, 31)) ('frameshift mutations', 'Var', (47, 67)) ('missense mutation', 'Var', (85, 102)) 75627 32062700 Five mutations (p. Val140Phe, p. Arg90*, exon 4 and 5 deletion, p. Arg46*, and exon 1 deletion), identified in the largest number of probands (29; 18 males, 11 females) were examined independently. ('Arg90', 'Chemical', '-', (33, 38)) ('p. Arg90*', 'Var', (30, 39)) ('p. Arg46*', 'Var', (64, 73)) ('Val140Phe', 'Var', (19, 28)) ('Arg46', 'Chemical', '-', (67, 72)) ('Val140Phe', 'SUBSTITUTION', 'None', (19, 28)) 75629 32062700 Exon 1 deletion and p. Val140Phe mutation might be associated with the earlier development of metastatic disease, however, the analyzed group of patients was too small to confirm this association (Figure 4). ('patients', 'Species', '9606', (145, 153)) ('Val140Phe', 'SUBSTITUTION', 'None', (23, 32)) ('Val140Phe', 'Var', (23, 32)) ('associated', 'Reg', (51, 61)) ('metastatic disease', 'CPA', (94, 112)) 75630 32062700 Eight (12.5%) patients with SDHB mutations died during the study period. ('SDHB', 'Gene', '6390', (28, 32)) ('patients', 'Species', '9606', (14, 22)) ('SDHB', 'Gene', (28, 32)) ('mutations', 'Var', (33, 42)) 75643 32062700 This warrants regular screening for the disease in SDHB mutation carriers older than 6 years. ('SDHB', 'Gene', (51, 55)) ('mutation', 'Var', (56, 64)) ('SDHB', 'Gene', '6390', (51, 55)) 75646 32062700 Since the most common localization of the primary tumor was in the abdominal region (in 82.22% of our group of pediatric patients with SDHB mutation), initial diagnostic work-up should be directed towards abdomen. ('SDHB', 'Gene', '6390', (135, 139)) ('mutation', 'Var', (140, 148)) ('SDHB', 'Gene', (135, 139)) ('tumor', 'Disease', 'MESH:D009369', (50, 55)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('patients', 'Species', '9606', (121, 129)) ('tumor', 'Disease', (50, 55)) 75657 32062700 This seems to be in disagreement with our recent study on 344 SDHB mutation carriers (including 143 pediatric and adult PHEO/PGL patients), where we reported an earlier progression to disease as well as tendency to earlier development of metastatic disease in males when compared to females. ('SDHB', 'Gene', '6390', (62, 66)) ('mutation', 'Var', (67, 75)) ('patients', 'Species', '9606', (129, 137)) ('PGL', 'Phenotype', 'HP:0002668', (125, 128)) ('metastatic disease', 'CPA', (238, 256)) ('PHEO', 'Phenotype', 'HP:0002666', (120, 124)) ('SDHB', 'Gene', (62, 66)) 75658 32062700 If gender differences in older patients with SDHB mutations will be confirmed by other studies, we need to clarify why they do occur. ('mutations', 'Var', (50, 59)) ('patients', 'Species', '9606', (31, 39)) ('SDHB', 'Gene', '6390', (45, 49)) ('SDHB', 'Gene', (45, 49)) 75666 32062700 Our study on pediatric patients showed that a cut-off of >=5 cm in primary tumor size could be a risk factor for metastasis, which was shown within 5 years from diagnosis. ('patients', 'Species', '9606', (23, 31)) ('tumor', 'Disease', 'MESH:D009369', (75, 80)) ('cut-off', 'Var', (46, 53)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('metastasis', 'CPA', (113, 123)) ('tumor', 'Disease', (75, 80)) 75672 32062700 Remarkably, bearing the SDHB mutation is an independent risk factor for metastatic disease with a reported rate of 85.2% if a primary PHEO/PGL was found in the abdomen before age 20. ('mutation', 'Var', (29, 37)) ('age', 'Gene', (175, 178)) ('age', 'Gene', '5973', (175, 178)) ('metastatic disease', 'Disease', (72, 90)) ('SDHB', 'Gene', '6390', (24, 28)) ('SDHB', 'Gene', (24, 28)) ('PHEO', 'Phenotype', 'HP:0002666', (134, 138)) ('PGL', 'Phenotype', 'HP:0002668', (139, 142)) 75673 32062700 reported the development of metastases in 59.44% and 7.7% of patients (age) with SDHB mutations, respectively. ('mutations', 'Var', (86, 95)) ('metastases', 'Disease', 'MESH:D009362', (28, 38)) ('patients', 'Species', '9606', (61, 69)) ('SDHB', 'Gene', '6390', (81, 85)) ('age', 'Gene', '5973', (71, 74)) ('SDHB', 'Gene', (81, 85)) ('metastases', 'Disease', (28, 38)) ('age', 'Gene', (71, 74)) 75676 32062700 Sites of metastases are also of interest since they can give us a lead on the most effective follow-up schedule in pediatric patients with SDHB mutations. ('metastases', 'Disease', (9, 19)) ('SDHB', 'Gene', '6390', (139, 143)) ('SDHB', 'Gene', (139, 143)) ('metastases', 'Disease', 'MESH:D009362', (9, 19)) ('mutations', 'Var', (144, 153)) ('patients', 'Species', '9606', (125, 133)) 75681 32062700 Abdominal PHEO/PGL detection by 68Ga-DOTATATE PET/CT was suboptimal pediatric population with SDHx mutations, probably due to reduced expression of SSTR2 in abdominal PHEOs/PGLs. ('PGL', 'Phenotype', 'HP:0002668', (15, 18)) ('expression', 'MPA', (134, 144)) ('SSTR2', 'Gene', (148, 153)) ('68Ga-DOTATATE', 'Chemical', 'MESH:C513399', (32, 45)) ('PHEO', 'Phenotype', 'HP:0002666', (10, 14)) ('mutations', 'Var', (99, 108)) ('SSTR2', 'Gene', '6752', (148, 153)) ('PGL', 'Phenotype', 'HP:0002668', (173, 176)) ('PHEO', 'Phenotype', 'HP:0002666', (167, 171)) ('reduced', 'NegReg', (126, 133)) ('SDHx', 'Gene', (94, 98)) 75682 32062700 Recent studies suggest there might be potential differences in disease presentation in patients with particular SDHB mutations. ('SDHB', 'Gene', (112, 116)) ('mutations', 'Var', (117, 126)) ('patients', 'Species', '9606', (87, 95)) ('SDHB', 'Gene', '6390', (112, 116)) 75683 32062700 Hence, we analyzed the clinical presentation of PHEO/PGL in patients harboring the five most represented mutations in our cohort of pediatric patients: p.Val140Phe, p.Arg46*, p.Arg90*, exon 1 deletion, and exon 4 and 5 deletion. ('PHEO', 'Phenotype', 'HP:0002666', (48, 52)) ('p.Arg90*', 'Mutation', 'p.R90*', (175, 183)) ('exon', 'Var', (206, 210)) ('PGL', 'Phenotype', 'HP:0002668', (53, 56)) ('exon', 'Var', (185, 189)) ('patients', 'Species', '9606', (60, 68)) ('p.Val140Phe', 'Mutation', 'rs267607032', (152, 163)) ('p.Arg46*', 'Var', (165, 173)) ('p.Val140Phe', 'Var', (152, 163)) ('patients', 'Species', '9606', (142, 150)) ('p.Arg90*', 'Var', (175, 183)) ('p.Arg46*', 'Mutation', 'p.R46*', (165, 173)) 75684 32062700 We did not find statistically significant association of any of these mutations with time to death or development of metastatic disease, however, the analyzed group of patients was too small to draw any conclusions. ('death', 'Disease', (93, 98)) ('mutations', 'Var', (70, 79)) ('patients', 'Species', '9606', (168, 176)) ('death', 'Disease', 'MESH:D003643', (93, 98)) 75685 32062700 In previous report on children with SDHB mutation, the 5-, 10-, and 20-year survival rates were 95.8%, 95.8%, and 71.9%, respectively. ('mutation', 'Var', (41, 49)) ('SDHB', 'Gene', (36, 40)) ('children', 'Species', '9606', (22, 30)) ('SDHB', 'Gene', '6390', (36, 40)) 75690 32062700 With these risk factors in mind, this group with SDHB mutations still warrants aggressive follow-up. ('SDHB', 'Gene', (49, 53)) ('mutations', 'Var', (54, 63)) ('SDHB', 'Gene', '6390', (49, 53)) 75692 32062700 Moreover, small number of patients harboring particular SDHB mutations does not allow to perform genotype-phenotype analysis for each mutation. ('SDHB', 'Gene', '6390', (56, 60)) ('SDHB', 'Gene', (56, 60)) ('mutations', 'Var', (61, 70)) ('patients', 'Species', '9606', (26, 34)) 75693 32062700 Nonetheless, the present data emphasize the need for early screening of pediatric population harboring SDHB mutation. ('SDHB', 'Gene', '6390', (103, 107)) ('SDHB', 'Gene', (103, 107)) ('mutation', 'Var', (108, 116)) 75696 32062700 Mutations in SDHB are associated with aggressive disease and high risk of metastases. ('metastases', 'Disease', 'MESH:D009362', (74, 84)) ('SDHB', 'Gene', '6390', (13, 17)) ('aggressive disease', 'Disease', 'MESH:D001523', (38, 56)) ('metastases', 'Disease', (74, 84)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (13, 17)) ('aggressive disease', 'Disease', (38, 56)) ('associated with', 'Reg', (22, 37)) 75700 32062700 Based on present results, we recommend initiating annual biochemical screening for PHEO/PGL in pediatric SDHB mutation carriers at age of 5 - 6 years. ('PGL', 'Phenotype', 'HP:0002668', (88, 91)) ('SDHB', 'Gene', '6390', (105, 109)) ('PHEO', 'Phenotype', 'HP:0002666', (83, 87)) ('age', 'Gene', '5973', (131, 134)) ('SDHB', 'Gene', (105, 109)) ('mutation', 'Var', (110, 118)) ('age', 'Gene', (131, 134)) 75714 32062700 In summary, our study has highlighted several important aspects in the management of pediatric patients with PHEO/PGL associated with SDHB mutations. ('patients', 'Species', '9606', (95, 103)) ('mutations', 'Var', (139, 148)) ('SDHB', 'Gene', (134, 138)) ('age', 'Gene', '5973', (74, 77)) ('PHEO', 'Phenotype', 'HP:0002666', (109, 113)) ('PHEO/PGL', 'Disease', (109, 117)) ('SDHB', 'Gene', '6390', (134, 138)) ('associated', 'Reg', (118, 128)) ('PGL', 'Phenotype', 'HP:0002668', (114, 117)) ('age', 'Gene', (74, 77)) 75715 32062700 The SDHB mutations seem to be an independent risk factor for metastatic disease, as demonstrated by previous studies. ('mutations', 'Var', (9, 18)) ('metastatic disease', 'Disease', (61, 79)) ('risk', 'Reg', (45, 49)) ('SDHB', 'Gene', '6390', (4, 8)) ('SDHB', 'Gene', (4, 8)) 75716 32062700 Although patients with SDHB mutations develop metastases as early as 5 years from diagnosis, we have shown that the 20-year prognosis and survival is good. ('patients', 'Species', '9606', (9, 17)) ('SDHB', 'Gene', '6390', (23, 27)) ('metastases', 'Disease', (46, 56)) ('SDHB', 'Gene', (23, 27)) ('metastases', 'Disease', 'MESH:D009362', (46, 56)) ('mutations', 'Var', (28, 37)) 75717 32062700 Metastases in pediatric patients with SDHB mutations develop earliest in the bones followed by lymph nodes, lungs, and liver. ('SDHB', 'Gene', '6390', (38, 42)) ('mutations', 'Var', (43, 52)) ('develop', 'Reg', (53, 60)) ('Metastases', 'Disease', (0, 10)) ('patients', 'Species', '9606', (24, 32)) ('SDHB', 'Gene', (38, 42)) ('Metastases', 'Disease', 'MESH:D009362', (0, 10)) 75720 32062700 This study supplements previous recommendations on appropriate and timely clinical screening for carriers of SDHB mutations in order to optimize long-term outcomes. ('mutations', 'Var', (114, 123)) ('SDHB', 'Gene', (109, 113)) ('SDHB', 'Gene', '6390', (109, 113)) 75721 32252027 A xenograft and cell line model of SDH-deficient pheochromocytoma derived from Sdhb+/- rats Tumors caused by loss-of-function mutations in genes encoding TCA cycle enzymes have been recently discovered and are now of great interest. ('loss-of-function', 'NegReg', (109, 125)) ('Tumors', 'Disease', 'MESH:D009369', (92, 98)) ('TCA', 'Chemical', 'MESH:D014238', (154, 157)) ('SDH-deficient pheochromocytoma', 'Disease', 'MESH:D010673', (35, 65)) ('Sdhb', 'Gene', (79, 83)) ('SDH-deficient pheochromocytoma', 'Disease', (35, 65)) ('mutations', 'Var', (126, 135)) ('Sdhb', 'Gene', '298596', (79, 83)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (49, 65)) ('Tumors', 'Disease', (92, 98)) ('Tumors', 'Phenotype', 'HP:0002664', (92, 98)) 75722 32252027 Mutations in succinate dehydrogenase (SDH) subunits cause pheochromocytoma/paraganglioma (PCPG) and syndromically associated tumors, which differ phenotypically and clinically from more common SDH-intact tumors of the same types. ('tumors', 'Disease', 'MESH:D009369', (204, 210)) ('paraganglioma', 'Phenotype', 'HP:0002668', (75, 88)) ('pheochromocytoma/paraganglioma', 'Disease', (58, 88)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('tumor', 'Phenotype', 'HP:0002664', (204, 209)) ('PG', 'Phenotype', 'HP:0002668', (92, 94)) ('tumors', 'Disease', (125, 131)) ('tumors', 'Disease', 'MESH:D009369', (125, 131)) ('tumors', 'Phenotype', 'HP:0002664', (125, 131)) ('cause', 'Reg', (52, 57)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', (38, 41)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (58, 88)) ('tumors', 'Disease', (204, 210)) ('tumors', 'Phenotype', 'HP:0002664', (204, 210)) ('PC', 'Phenotype', 'HP:0002666', (90, 92)) ('succinate', 'Chemical', 'MESH:D019802', (13, 22)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (58, 74)) 75725 32252027 Using a new strategy, we developed a xenograft and cell line model of SDH-deficient pheochromocytoma from rats with a heterozygous germline Sdhb mutation. ('rats', 'Species', '10116', (106, 110)) ('Sdhb', 'Gene', (140, 144)) ('SDH-deficient pheochromocytoma', 'Disease', 'MESH:D010673', (70, 100)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (84, 100)) ('SDH-deficient pheochromocytoma', 'Disease', (70, 100)) ('rat', 'Species', '10116', (106, 109)) ('rat', 'Species', '10116', (14, 17)) ('mutation', 'Var', (145, 153)) 75731 32252027 Mutations of genes encoding subunits of succinate dehydrogenase (SDH) account for the largest number of familial aggregates of these tumors and for more than 20-30% of the tumors that metastasize. ('tumors', 'Phenotype', 'HP:0002664', (133, 139)) ('tumor', 'Phenotype', 'HP:0002664', (172, 177)) ('familial aggregates', 'Disease', (104, 123)) ('tumors', 'Disease', (172, 178)) ('tumors', 'Disease', (133, 139)) ('tumors', 'Disease', 'MESH:D009369', (172, 178)) ('tumors', 'Disease', 'MESH:D009369', (133, 139)) ('tumors', 'Phenotype', 'HP:0002664', (172, 178)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('succinate', 'Chemical', 'MESH:D019802', (40, 49)) ('SDH', 'Gene', (65, 68)) ('Mutations', 'Var', (0, 9)) 75732 32252027 Specifically, about 42% of SDHB mutation carriers develop pheochromocytomas or paragangliomas by the age of 70, and up to almost 60% of the tumors have been reported to metastasize. ('tumors', 'Disease', (140, 146)) ('paragangliomas', 'Disease', (79, 93)) ('tumors', 'Disease', 'MESH:D009369', (140, 146)) ('paragangliomas', 'Disease', 'MESH:D010235', (79, 93)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (58, 75)) ('tumors', 'Phenotype', 'HP:0002664', (140, 146)) ('pheochromocytomas', 'Disease', (58, 75)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('paragangliomas', 'Phenotype', 'HP:0002668', (79, 93)) ('mutation', 'Var', (32, 40)) ('develop', 'PosReg', (50, 57)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (58, 75)) ('SDHB', 'Gene', (27, 31)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (58, 74)) 75737 32252027 In contrast, cluster 2, the second major aggregate of tumors, is associated predominantly with mutations of genes including RET and NF1 that affect kinase signaling. ('affect', 'Reg', (141, 147)) ('cluster 2', 'Disease', (13, 22)) ('tumors', 'Disease', 'MESH:D009369', (54, 60)) ('NF1', 'Gene', '24592', (132, 135)) ('kinase signaling', 'MPA', (148, 164)) ('associated', 'Reg', (65, 75)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) ('RET', 'Gene', '24716', (124, 127)) ('mutations', 'Var', (95, 104)) ('RET', 'Gene', (124, 127)) ('tumors', 'Phenotype', 'HP:0002664', (54, 60)) ('tumors', 'Disease', (54, 60)) ('NF1', 'Gene', (132, 135)) 75739 32252027 However, genetically engineered mice with Sdhb mutations have thus far failed to develop SDH-deficient PCPGs. ('PG', 'Phenotype', 'HP:0002668', (105, 107)) ('mutations', 'Var', (47, 56)) ('SDH-deficient PCPGs', 'Disease', 'MESH:D007153', (89, 108)) ('PC', 'Phenotype', 'HP:0002666', (103, 105)) ('Sdhb', 'Gene', (42, 46)) ('SDH-deficient PCPGs', 'Disease', (89, 108)) ('mice', 'Species', '10090', (32, 36)) 75748 32252027 Four 'F0' founders were generated with various deletions in the rat Sdhb gene: a 1-base deletion in exon 1, a 13-base deletion in exon 1, a 7-base deletion in exon 2 and a 8-base deletion in exon 2. ('rat', 'Species', '10116', (64, 67)) ('Sdhb', 'Gene', (68, 72)) ('deletions', 'Var', (47, 56)) ('rat', 'Species', '10116', (28, 31)) 75749 32252027 For each of the founder mutations, we tested liver tissue of heterozygous offspring for expression of rat Sdhb mRNA using a commercial TaqMan assay kit (Life Technologies). ('mutations', 'Var', (24, 33)) ('tested', 'Reg', (38, 44)) ('rat', 'Species', '10116', (102, 105)) ('Sdhb', 'Gene', (106, 110)) 75750 32252027 Finally, as a bioassay to confirm biological significance of the Sdhb deletions, we bred male and female Sdhb+/- heterozygotes to each other and examined gravid uteri as a test for homozygous embryonic lethality. ('deletions', 'Var', (70, 79)) ('embryonic lethality', 'Disease', 'MESH:D020964', (192, 211)) ('embryonic lethality', 'Disease', (192, 211)) ('Sdhb', 'Gene', (65, 69)) 75802 32252027 Liver tissue from heterozygous rats carrying each of the three germline Sdhb deletions showed approximately 50% reduced expression of Sdhb mRNA and enzyme activity compared to age-matched WT rats and 68% of normal protein expression based on densitometry data. ('deletions', 'Var', (77, 86)) ('mRNA', 'MPA', (139, 143)) ('expression', 'MPA', (120, 130)) ('Sdhb', 'Gene', (134, 138)) ('enzyme activity', 'MPA', (148, 163)) ('Sdhb', 'Gene', (72, 76)) ('rats', 'Species', '10116', (31, 35)) ('rats', 'Species', '10116', (191, 195)) ('reduced', 'NegReg', (112, 119)) ('protein expression', 'MPA', (214, 232)) 75814 32252027 Both were positive for SDHA, which is known to persist in SDH-deficient tumors caused by SDHB mutations. ('SDH-deficient tumors', 'Disease', 'MESH:D009369', (58, 78)) ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('mutations', 'Var', (94, 103)) ('SDHA', 'Disease', (23, 27)) ('positive', 'Reg', (10, 18)) ('tumors', 'Phenotype', 'HP:0002664', (72, 78)) ('SDH-deficient tumors', 'Disease', (58, 78)) ('caused by', 'Reg', (79, 88)) ('SDHB', 'Gene', (89, 93)) 75817 32252027 The most distinctive ultrastructural features of RS0 were relatively sparse secretory granules and cytoplasmic vacuoles similar to those in other SDH-deficient tumors. ('SDH-deficient tumors', 'Disease', 'MESH:D009369', (146, 166)) ('RS0', 'Var', (49, 52)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('tumors', 'Phenotype', 'HP:0002664', (160, 166)) ('RS0', 'Chemical', '-', (49, 52)) ('SDH-deficient tumors', 'Disease', (146, 166)) 75841 32252027 A ~108-kb homozygous deletion involving exon 1 of Cdkna and complete loss of Cdkn2b was identified in cell line RS0. ('loss', 'NegReg', (69, 73)) ('RS0', 'Chemical', '-', (112, 115)) ('deletion', 'Var', (21, 29)) ('Cdkna', 'Gene', (50, 55)) ('Cdkn2b', 'Gene', (77, 83)) ('Cdkn2b', 'Gene', '25164', (77, 83)) 75846 32252027 The principal driver gene mutation in RS1/2 is not apparent but may involve haploinsufficiency of one or more of these cancer genes or other genes on chr5. ('haploinsufficiency', 'Disease', (76, 94)) ('mutation', 'Var', (26, 34)) ('cancer', 'Disease', 'MESH:D009369', (119, 125)) ('RS1/2', 'Gene', (38, 43)) ('cancer', 'Disease', (119, 125)) ('haploinsufficiency', 'Disease', 'MESH:D058495', (76, 94)) ('cancer', 'Phenotype', 'HP:0002664', (119, 125)) 75847 32252027 Interestingly, in cell line RS1/2 we observed a missense mutation at 10% variant allele frequency in cytochrome B (Mt-cyb). ('cytochrome B', 'Gene', '26192', (101, 113)) ('cytochrome B', 'Gene', (101, 113)) ('variant', 'Var', (73, 80)) ('missense mutation', 'Var', (48, 65)) 75848 32252027 Despite the paucity of pathogenic mutations in both cell lines, we observed large segmental copy-number loss events in RS0 that are syntenic with frequently altered chromosomal regions in human SDHB-associated PCPG tumors (Fig. ('loss', 'NegReg', (104, 108)) ('PCPG tumors', 'Disease', (210, 221)) ('human', 'Species', '9606', (188, 193)) ('SDHB-associated', 'Gene', (194, 209)) ('PCPG tumors', 'Disease', 'MESH:D009369', (210, 221)) ('RS0', 'Chemical', '-', (119, 122)) ('tumor', 'Phenotype', 'HP:0002664', (215, 220)) ('RS0', 'Gene', (119, 122)) ('copy-number', 'Var', (92, 103)) ('PG', 'Phenotype', 'HP:0002668', (212, 214)) ('PC', 'Phenotype', 'HP:0002666', (210, 212)) ('tumors', 'Phenotype', 'HP:0002664', (215, 221)) 75849 32252027 These events included syntenic loss of human chr1p, chr2q, chr3, chr8q and chr18p. ('chr1p', 'Gene', (45, 50)) ('chr8q', 'Var', (65, 70)) ('chr18p', 'Gene', (75, 81)) ('chr3', 'Gene', (59, 63)) ('chr2q', 'Gene', (52, 57)) ('human', 'Species', '9606', (39, 44)) 75850 32252027 We reasoned that these structural events are likely to be important in co-operating with SDHB loss of function to promote tumorigenesis, and provide further evidence that RS0 has the genomic hallmarks of human SDHB pheochromocytoma. ('RS0', 'Var', (171, 174)) ('SDHB pheochromocytoma', 'Disease', 'MESH:D010673', (210, 231)) ('rat', 'Species', '10116', (77, 80)) ('SDHB pheochromocytoma', 'Disease', (210, 231)) ('tumor', 'Disease', 'MESH:D009369', (122, 127)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (215, 231)) ('RS0', 'Chemical', '-', (171, 174)) ('tumor', 'Phenotype', 'HP:0002664', (122, 127)) ('human', 'Species', '9606', (204, 209)) ('loss of function', 'NegReg', (94, 110)) ('tumor', 'Disease', (122, 127)) ('SDHB', 'Gene', (89, 93)) ('promote', 'PosReg', (114, 121)) 75855 32252027 The labeled glutamate contained almost the same amounts of (13C2-4,5)Glu and (13C2-2,3)Glu isoptomers, indicating approximately equal activity of pyruvate dehydrogenase (PDH) and pyruvate carboxylase (PC), respectively. ('PC', 'Phenotype', 'HP:0002666', (201, 203)) ('13C', 'Chemical', 'MESH:C000615229', (60, 63)) ('pyruvate', 'Chemical', 'MESH:D019289', (179, 187)) ('Glu', 'Chemical', 'MESH:D018698', (69, 72)) ('Glu', 'Chemical', 'MESH:D018698', (87, 90)) ('13C2-2,3', 'Var', (78, 86)) ('pyruvate carboxylase', 'Gene', (179, 199)) ('13C', 'Chemical', 'MESH:C000615229', (78, 81)) ('pyruvate carboxylase', 'Gene', '25104', (179, 199)) ('pyruvate', 'Chemical', 'MESH:D019289', (146, 154)) ('activity', 'MPA', (134, 142)) ('glutamate', 'Chemical', 'MESH:D018698', (12, 21)) 75858 32252027 RS0 xenografts show high expression of canonical cluster 1 markers associated with the Hif2a regulatory network (Table 2) and with hereditary SDHB mutations in the Cancer Genome Atlas (TCGA) and previous comparable studies. ('mutations', 'Var', (147, 156)) ('Hif2a', 'Gene', '29452', (87, 92)) ('SDHB', 'Gene', (142, 146)) ('Cancer', 'Disease', (164, 170)) ('expression', 'MPA', (25, 35)) ('Cancer', 'Disease', 'MESH:D009369', (164, 170)) ('RS0', 'Chemical', '-', (0, 3)) ('Cancer', 'Phenotype', 'HP:0002664', (164, 170)) ('Hif2a', 'Gene', (87, 92)) 75869 32252027 This increase may be related to a reported role of Sdha in an alternate assembly of respiratory complex 2 that decreases metabolite synthesis and cell proliferation in response to knockdown of SDHB. ('metabolite synthesis', 'MPA', (121, 141)) ('knockdown', 'Var', (180, 189)) ('SDHB', 'Gene', (193, 197)) ('Sdha', 'Gene', '157074', (51, 55)) ('Sdha', 'Gene', (51, 55)) ('decreases', 'NegReg', (111, 120)) ('rat', 'Species', '10116', (89, 92)) ('rat', 'Species', '10116', (158, 161)) ('cell proliferation', 'CPA', (146, 164)) 75878 32252027 RS0, which is Sdh deficient, is genomically comparable to its human counterpart and differs from existing models in that it arose in an animal with a hereditary Sdhb mutation. ('RS0', 'Chemical', '-', (0, 3)) ('human', 'Species', '9606', (62, 67)) ('Sdhb', 'Gene', (161, 165)) ('mutation', 'Var', (166, 174)) 75893 32252027 These markers are two of the three 'exemplar genes' cited in the TCGA study for being consistently associated with pseudohypoxia in human PGs and Ndufa4/2 is of particular interest in that complex 1 activity is reportedly upregulated in SDHB mutated human PGs. ('activity', 'MPA', (199, 207)) ('SDHB', 'Gene', (237, 241)) ('pseudohypoxia', 'Disease', (115, 128)) ('Ndufa4/2', 'Gene', (146, 154)) ('upregulated', 'PosReg', (222, 233)) ('PG', 'Phenotype', 'HP:0002668', (138, 140)) ('mutated', 'Var', (242, 249)) ('pseudohypoxia', 'Disease', 'None', (115, 128)) ('PG', 'Phenotype', 'HP:0002668', (256, 258)) ('Ndufa4/2', 'Gene', '4697;4695', (146, 154)) ('PGs', 'Chemical', 'MESH:D010715', (138, 141)) ('human', 'Species', '9606', (132, 137)) ('human', 'Species', '9606', (250, 255)) ('PGs', 'Chemical', 'MESH:D010715', (256, 259)) ('complex 1', 'Enzyme', (189, 198)) 75913 32252027 It is well known that genetic and epigenetic characteristics of individual cancers and types of cancer can dictate different approaches to treatment. ('dictate', 'Reg', (107, 114)) ('cancer', 'Disease', 'MESH:D009369', (75, 81)) ('cancers', 'Disease', 'MESH:D009369', (75, 82)) ('cancers', 'Phenotype', 'HP:0002664', (75, 82)) ('cancer', 'Phenotype', 'HP:0002664', (96, 102)) ('cancer', 'Disease', (75, 81)) ('cancers', 'Disease', (75, 82)) ('epigenetic', 'Var', (34, 44)) ('cancer', 'Disease', 'MESH:D009369', (96, 102)) ('cancer', 'Phenotype', 'HP:0002664', (75, 81)) ('cancer', 'Disease', (96, 102)) 75916 32252027 The most extensively characterized and relevant model is MENX, which is caused by a loss-of-function mutation in Cdkn1b, which encodes the cyclin-dependent kinase inhibitor p27Kip1. ('loss-of-function', 'NegReg', (84, 100)) ('Cdkn1b', 'Gene', '83571', (113, 119)) ('p27Kip1', 'Gene', '83571', (173, 180)) ('p27Kip1', 'Gene', (173, 180)) ('MENX', 'Disease', (57, 61)) ('mutation', 'Var', (101, 109)) ('Cdkn1b', 'Gene', (113, 119)) 75918 32252027 It is plausible that, in our models, radiation caused somatic genetic changes that accelerated the growth of spontaneous PCs and caused one of the tumors to become SDH deficient. ('tumor', 'Phenotype', 'HP:0002664', (147, 152)) ('SDH', 'MPA', (164, 167)) ('tumors', 'Disease', (147, 153)) ('growth', 'MPA', (99, 105)) ('tumors', 'Phenotype', 'HP:0002664', (147, 153)) ('deficient', 'NegReg', (168, 177)) ('tumors', 'Disease', 'MESH:D009369', (147, 153)) ('rat', 'Species', '10116', (89, 92)) ('changes', 'Var', (70, 77)) ('PC', 'Phenotype', 'HP:0002666', (121, 123)) ('accelerated', 'PosReg', (83, 94)) 75926 32252027 p19ARF is a negative regulator of MDM2 and loss of p19ARF is known to cause indirect suppression of p53 through the ARF-MDM2-p53 tumor-suppressor axis. ('ARF', 'Disease', 'MESH:D058186', (116, 119)) ('ARF', 'Disease', 'MESH:D058186', (3, 6)) ('MDM2', 'Gene', '314856', (120, 124)) ('tumor', 'Disease', (129, 134)) ('p19ARF', 'Gene', (51, 57)) ('ARF', 'Disease', (54, 57)) ('tumor', 'Disease', 'MESH:D009369', (129, 134)) ('MDM2', 'Gene', (34, 38)) ('p19ARF', 'Gene', '25163', (0, 6)) ('suppression', 'NegReg', (85, 96)) ('MDM2', 'Gene', (120, 124)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('p53', 'Gene', '301300', (100, 103)) ('ARF', 'Disease', (3, 6)) ('loss', 'Var', (43, 47)) ('ARF', 'Disease', (116, 119)) ('p53', 'Gene', '301300', (125, 128)) ('p53', 'Gene', (100, 103)) ('ARF', 'Disease', 'MESH:D058186', (54, 57)) ('p19ARF', 'Gene', (0, 6)) ('p53', 'Gene', (125, 128)) ('p19ARF', 'Gene', '25163', (51, 57)) ('MDM2', 'Gene', '314856', (34, 38)) 75927 32252027 However, because the Cdkn2a deletion was not detected in the RS0 xenograft, it most likely was not involved in early tumorigenesis of RS0. ('Cdkn2a', 'Gene', '1029', (21, 27)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('tumor', 'Disease', (117, 122)) ('involved', 'Reg', (99, 107)) ('RS0', 'Chemical', '-', (61, 64)) ('RS0', 'Chemical', '-', (134, 137)) ('Cdkn2a', 'Gene', (21, 27)) ('deletion', 'Var', (28, 36)) ('tumor', 'Disease', 'MESH:D009369', (117, 122)) 75928 32252027 The existence of the Cdkn2a deletion may further increase the relevance of the RS0 cell line as a pre-clinical model because p16INK4A/Cdkn2a gene expression is frequently downregulated in human PCPG, either by genetic abnormalities or promoter methylation, and is associated with poor prognosis. ('Cdkn2a', 'Gene', '1029', (21, 27)) ('RS0', 'Chemical', '-', (79, 82)) ('human', 'Species', '9606', (188, 193)) ('Cdkn2a', 'Gene', '1029', (134, 140)) ('p16INK4A', 'Gene', '1029', (125, 133)) ('downregulated', 'NegReg', (171, 184)) ('PC', 'Phenotype', 'HP:0002666', (194, 196)) ('Cdkn2a', 'Gene', (134, 140)) ('genetic abnormalities', 'Disease', 'MESH:D030342', (210, 231)) ('PG', 'Phenotype', 'HP:0002668', (196, 198)) ('expression', 'MPA', (146, 156)) ('Cdkn2a', 'Gene', (21, 27)) ('deletion', 'Var', (28, 36)) ('p16INK4A', 'Gene', (125, 133)) ('PCPG', 'Disease', (194, 198)) ('genetic abnormalities', 'Disease', (210, 231)) 75972 29709936 Dyslipidemia was defined as any combination of total cholesterol level >=220 mg/dL, low-density lipoprotein-cholesterol >=140 mg/dL, high-density lipoprotein-cholesterol <40 mg/dL, triglyceride >=150 mg/dL, or the use of lipid-lowering drugs. ('triglyceride', 'Chemical', 'MESH:D014280', (181, 193)) ('cholesterol', 'Chemical', 'MESH:D002784', (53, 64)) ('>=140', 'Var', (120, 125)) ('cholesterol', 'Chemical', 'MESH:D002784', (158, 169)) ('lipid', 'Chemical', 'MESH:D008055', (3, 8)) ('Dyslipidemia', 'Disease', 'MESH:D050171', (0, 12)) ('lipid', 'Chemical', 'MESH:D008055', (221, 226)) ('Dyslipidemia', 'Phenotype', 'HP:0003119', (0, 12)) ('cholesterol', 'Chemical', 'MESH:D002784', (108, 119)) ('Dyslipidemia', 'Disease', (0, 12)) ('low-density lipoprotein-cholesterol', 'MPA', (84, 119)) ('high-density lipoprotein-cholesterol', 'MPA', (133, 169)) 76033 29755915 PHEOs = dusky-colored tumors) were reported to occur sporadically or genetically (multiple endocrine neoplasia type 2, neurofibromatosis type 1, Von Hippel-Lindau disease (VHL), mutations in succinate dehydrogenase subunit B (SDHB)). ('tumors', 'Phenotype', 'HP:0002664', (22, 28)) ('neurofibromatosis type 1, Von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (119, 170)) ('tumors', 'Disease', 'MESH:D009369', (22, 28)) ('SDHB', 'Gene', '6390', (226, 230)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (91, 110)) ('tumor', 'Phenotype', 'HP:0002664', (22, 27)) ('neoplasia', 'Phenotype', 'HP:0002664', (101, 110)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (191, 224)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (119, 136)) ('SDHB', 'Gene', (226, 230)) ('VHL', 'Gene', (172, 175)) ('mutations', 'Var', (178, 187)) ('tumors', 'Disease', (22, 28)) ('VHL', 'Gene', '7428', (172, 175)) ('succinate dehydrogenase subunit B', 'Gene', (191, 224)) 76073 29755915 About 50% of patients with metastatic disease have particular hereditary germline mutations. ('hereditary germline mutations', 'Var', (62, 91)) ('patients', 'Species', '9606', (13, 21)) ('metastatic disease', 'Disease', (27, 45)) 76082 29755915 3-MT is thought to be a novel malignancy marker nowadays in addition to other malignancy risk factors like SDHB mutation, tumor diameter greater than 5 cm, and tumors in non-chromaffin locations. ('tumors', 'Phenotype', 'HP:0002664', (160, 166)) ('malignancy', 'Disease', (30, 40)) ('malignancy', 'Disease', (78, 88)) ('chromaffin', 'Chemical', '-', (174, 184)) ('SDHB', 'Gene', (107, 111)) ('mutation', 'Var', (112, 120)) ('MT', 'Chemical', 'MESH:C001746', (2, 4)) ('tumor', 'Disease', 'MESH:D009369', (160, 165)) ('tumor', 'Disease', 'MESH:D009369', (122, 127)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('tumor', 'Phenotype', 'HP:0002664', (122, 127)) ('malignancy', 'Disease', 'MESH:D009369', (30, 40)) ('SDHB', 'Gene', '6390', (107, 111)) ('tumors', 'Disease', (160, 166)) ('tumor', 'Disease', (160, 165)) ('tumor', 'Disease', (122, 127)) ('malignancy', 'Disease', 'MESH:D009369', (78, 88)) ('tumors', 'Disease', 'MESH:D009369', (160, 166)) 76090 29755915 Thus, until a more reliable metastatic biomarker is found than 3-MT, this measurement may nevertheless give predictive information about the size, metastasis presence, and SDHB mutation status of PHEO. ('mutation', 'Var', (177, 185)) ('MT', 'Chemical', 'MESH:C001746', (65, 67)) ('SDHB', 'Gene', (172, 176)) ('SDHB', 'Gene', '6390', (172, 176)) ('metastasis', 'CPA', (147, 157)) 76113 29755915 I-131-MIBG binds to the catecholamine reuptake transporter with high affinity on the cell membrane, resulting in radiation-induced cell death. ('radiation-induced cell death', 'CPA', (113, 141)) ('binds', 'Interaction', (11, 16)) ('catecholamine', 'Chemical', 'MESH:D002395', (24, 37)) ('resulting in', 'Reg', (100, 112)) ('I-131-MIBG', 'Chemical', 'MESH:D019797', (0, 10)) ('catecholamine', 'Enzyme', (24, 37)) ('I-131-MIBG', 'Var', (0, 10)) 76114 29755915 Treatment of malignant PHEO with I-131-MIBG shows partial remission rates of 20%-47% in some studies. ('malignant PHEO', 'Disease', (13, 27)) ('I-131-MIBG', 'Chemical', 'MESH:D019797', (33, 43)) ('I-131-MIBG', 'Var', (33, 43)) 76180 28757764 TURBT may result in fluctuation of blood pressure during irrigation with distilled water or normal saline intraoperatively, or with electrical stimulation during resection and cauterization. ('TURBT', 'Var', (0, 5)) ('fluctuation', 'MPA', (20, 31)) ('water', 'Chemical', 'MESH:D014867', (83, 88)) ('blood pressure', 'MPA', (35, 49)) ('result in', 'Reg', (10, 19)) 76193 23481210 Thus, now about 30-40% of these tumors are linked to the germline mutations, which also include mutations in the VHL, RET, NF1, SDHx, and SDHAF2 genes. ('VHL', 'Gene', (113, 116)) ('RET', 'Gene', '5979', (118, 121)) ('SDHAF2', 'Gene', (138, 144)) ('SDHAF2', 'Gene', '54949', (138, 144)) ('VHL', 'Gene', '7428', (113, 116)) ('NF1', 'Gene', (123, 126)) ('tumors', 'Disease', 'MESH:D009369', (32, 38)) ('NF1', 'Gene', '4763', (123, 126)) ('linked', 'Reg', (43, 49)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('tumors', 'Phenotype', 'HP:0002664', (32, 38)) ('SDHx', 'Chemical', '-', (128, 132)) ('tumors', 'Disease', (32, 38)) ('SDHx', 'Gene', (128, 132)) ('mutations', 'Var', (96, 105)) ('RET', 'Gene', (118, 121)) 76208 23481210 suggest that the NF1 gene constitutes the most frequent (24%) target of somatic mutations so far known in sporadic PHEOs. ('NF1', 'Gene', (17, 20)) ('NF1', 'Gene', '4763', (17, 20)) ('PHEOs', 'Chemical', '-', (115, 120)) ('mutations', 'Var', (80, 89)) 76209 23481210 Furthermore, somatic mutations in MAX were found in 1.65% of tumors. ('tumors', 'Disease', (61, 67)) ('MAX', 'Gene', '4149', (34, 37)) ('MAX', 'Gene', (34, 37)) ('tumors', 'Disease', 'MESH:D009369', (61, 67)) ('found', 'Reg', (43, 48)) ('somatic mutations', 'Var', (13, 30)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('tumors', 'Phenotype', 'HP:0002664', (61, 67)) 76214 23481210 reported heterozygous germline mutations in the TMEM127 gene in seven patients affected by PHEO. ('patients', 'Species', '9606', (70, 78)) ('TMEM127', 'Gene', '55654', (48, 55)) ('TMEM127', 'Gene', (48, 55)) ('germline mutations', 'Var', (22, 40)) ('PHEO', 'Chemical', '-', (91, 95)) 76217 23481210 Tumors with TMEM127 mutations have a transcription signature comparable to that of RET-mutated and NF1-mutated PHEOs. ('transcription signature', 'MPA', (37, 60)) ('RET', 'Gene', '5979', (83, 86)) ('TMEM127', 'Gene', (12, 19)) ('NF1', 'Gene', (99, 102)) ('TMEM127', 'Gene', '55654', (12, 19)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('NF1', 'Gene', '4763', (99, 102)) ('RET', 'Gene', (83, 86)) ('PHEOs', 'Chemical', '-', (111, 116)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('mutations', 'Var', (20, 29)) 76219 23481210 However, TMEM127 knockdown, leading to an increase in the phosphorylation of mTORC1 targets, results in larger cells with higher rates of proliferation and hyperphosphorylation of mTOR effector proteins. ('mTOR', 'Gene', (180, 184)) ('phosphorylation', 'MPA', (58, 73)) ('proliferation', 'CPA', (138, 151)) ('mTORC1', 'Gene', (77, 83)) ('higher', 'PosReg', (122, 128)) ('TMEM127', 'Gene', (9, 16)) ('larger', 'PosReg', (104, 110)) ('TMEM127', 'Gene', '55654', (9, 16)) ('hyperphosphorylation', 'MPA', (156, 176)) ('mTOR', 'Gene', '2475', (77, 81)) ('cells', 'CPA', (111, 116)) ('mTOR', 'Gene', '2475', (180, 184)) ('mTOR', 'Gene', (77, 81)) ('knockdown', 'Var', (17, 26)) ('rates', 'MPA', (129, 134)) ('mTORC1', 'Gene', '382056', (77, 83)) ('increase', 'PosReg', (42, 50)) 76221 23481210 TMEM127 missense, frame shift, and nonsense mutations were detected in all three coding exons of the gene, but no large TMEM127 deletions or duplications were found. ('TMEM127', 'Gene', (0, 7)) ('missense', 'Var', (8, 16)) ('TMEM127', 'Gene', (120, 127)) ('TMEM127', 'Gene', '55654', (0, 7)) ('TMEM127', 'Gene', '55654', (120, 127)) ('frame shift', 'Var', (18, 29)) 76222 23481210 Genetic studies of PHEO/PGL patients indicate a low prevalence of TMEM127 mutations (~2% of all cases negative for other PHEO/PGL susceptibility mutations). ('TMEM127', 'Gene', '55654', (66, 73)) ('PHEO', 'Chemical', '-', (121, 125)) ('mutations', 'Var', (74, 83)) ('PHEO', 'Chemical', '-', (19, 23)) ('patients', 'Species', '9606', (28, 36)) ('TMEM127', 'Gene', (66, 73)) 76224 23481210 In most cases, TMEM127 mutation carriers suffered from PHEOs only (unilateral as well as bilateral tumors) and secreted a high level of metanephrines. ('PHEOs only', 'Disease', (55, 65)) ('bilateral tumors', 'Disease', 'MESH:D009396', (89, 105)) ('high level of metanephrines', 'MPA', (122, 149)) ('mutation', 'Var', (23, 31)) ('secreted', 'MPA', (111, 119)) ('TMEM127', 'Gene', (15, 22)) ('bilateral tumors', 'Disease', (89, 105)) ('TMEM127', 'Gene', '55654', (15, 22)) ('PHEOs', 'Chemical', '-', (55, 60)) ('suffered', 'Reg', (41, 49)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('tumors', 'Phenotype', 'HP:0002664', (99, 105)) 76229 23481210 MYC activates transcription binding to E-box DNA recognition sequences in target gene promoters through heterodimerization with MAX; heterodimers of MAX with MXD1 antagonize MYC-dependent cell transformation by transcriptional repression of the same E-box target DNA sequences. ('heterodimerization', 'MPA', (104, 122)) ('MYC', 'Gene', (0, 3)) ('antagonize', 'NegReg', (163, 173)) ('MAX', 'Gene', (128, 131)) ('transcription', 'MPA', (14, 27)) ('MYC', 'Gene', '4609', (174, 177)) ('MAX', 'Gene', (149, 152)) ('MAX', 'Gene', '4149', (149, 152)) ('MAX', 'Gene', '4149', (128, 131)) ('MXD1', 'Gene', '4084', (158, 162)) ('heterodimers', 'Var', (133, 145)) ('MYC', 'Gene', '4609', (0, 3)) ('activates', 'PosReg', (4, 13)) ('MXD1', 'Gene', (158, 162)) ('MYC', 'Gene', (174, 177)) 76230 23481210 MAX mutations are associated with bilateral PHEOs and an apparent paternal transmission of the disease. ('PHEOs', 'Chemical', '-', (44, 49)) ('MAX', 'Gene', (0, 3)) ('MAX', 'Gene', '4149', (0, 3)) ('bilateral PHEOs', 'Disease', (34, 49)) ('associated', 'Reg', (18, 28)) ('mutations', 'Var', (4, 13)) ('paternal transmission', 'CPA', (66, 87)) 76232 23481210 In this study, patients with pathogenic MAX mutations had adrenal tumors, including 13 with bilateral or multiple PHEOs within the same adrenal gland. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('patients', 'Species', '9606', (15, 23)) ('adrenal tumors', 'Disease', 'MESH:D000310', (58, 72)) ('pathogenic', 'Reg', (29, 39)) ('tumors', 'Phenotype', 'HP:0002664', (66, 72)) ('mutations', 'Var', (44, 53)) ('adrenal tumors', 'Disease', (58, 72)) ('PHEOs', 'Chemical', '-', (114, 119)) ('MAX', 'Gene', '4149', (40, 43)) ('MAX', 'Gene', (40, 43)) 76236 23481210 Therefore, mutations of MAX can be associated with a high risk of malignancy. ('mutations', 'Var', (11, 20)) ('malignancy', 'Disease', 'MESH:D009369', (66, 76)) ('MAX', 'Gene', (24, 27)) ('associated', 'Reg', (35, 45)) ('MAX', 'Gene', '4149', (24, 27)) ('malignancy', 'Disease', (66, 76)) 76237 23481210 The mutations were found in all five exons of the MAX gene, but were especially frequent in exons 3 and 4, corresponding to some of the most important residues within the conserved bHLH-Zip domain of MAX. ('MAX', 'Gene', '4149', (200, 203)) ('MAX', 'Gene', (200, 203)) ('MAX', 'Gene', (50, 53)) ('mutations', 'Var', (4, 13)) ('MAX', 'Gene', '4149', (50, 53)) 76238 23481210 How MAX mutations contribute to the pathogenesis of PHEO/PGL remains unclear. ('PHEO', 'Chemical', '-', (52, 56)) ('MAX', 'Gene', '4149', (4, 7)) ('MAX', 'Gene', (4, 7)) ('PHEO/PGL', 'Disease', (52, 60)) ('mutations', 'Var', (8, 17)) ('contribute', 'Reg', (18, 28)) 76241 23481210 identified novel somatic mutations in the gene encoding HIF-2alpha in multiple PGLs and duodenal somatostatinomas associated with polycythemia, suggesting the existence of a new syndrome. ('somatostatinomas', 'Disease', 'MESH:D013005', (97, 113)) ('mutations', 'Var', (25, 34)) ('HIF-2alpha', 'Gene', '2034', (56, 66)) ('polycythemia', 'Disease', (130, 142)) ('somatostatinomas', 'Disease', (97, 113)) ('polycythemia', 'Phenotype', 'HP:0001901', (130, 142)) ('PGLs', 'Gene', '25796', (79, 83)) ('associated', 'Reg', (114, 124)) ('polycythemia', 'Disease', 'MESH:D011086', (130, 142)) ('PGLs', 'Gene', (79, 83)) ('HIF-2alpha', 'Gene', (56, 66)) 76242 23481210 found somatic HIF2A mutations that may lead to the pathogenesis of PHEO in a female patient. ('lead to', 'Reg', (39, 46)) ('HIF2A', 'Gene', '2034', (14, 19)) ('PHEO', 'Disease', (67, 71)) ('PHEO', 'Chemical', '-', (67, 71)) ('HIF2A', 'Gene', (14, 19)) ('mutations', 'Var', (20, 29)) ('patient', 'Species', '9606', (84, 91)) 76248 23481210 When these proteins are dysregulated, they often contribute to tumorigenesis and cancer progression. ('tumor', 'Disease', (63, 68)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('dysregulated', 'Var', (24, 36)) ('proteins', 'Protein', (11, 19)) ('cancer', 'Disease', 'MESH:D009369', (81, 87)) ('cancer', 'Disease', (81, 87)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('contribute', 'Reg', (49, 59)) ('cancer', 'Phenotype', 'HP:0002664', (81, 87)) 76249 23481210 However, mutations in the genes encoding HIFs have not previously been identified in any cancer. ('HIFs', 'Gene', (41, 45)) ('mutations', 'Var', (9, 18)) ('cancer', 'Disease', 'MESH:D009369', (89, 95)) ('cancer', 'Disease', (89, 95)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) 76250 23481210 Dominantly inherited gain-of-function mutations of HIF2A were previously found to be associated with an increase of erythropoietin and congenital polycythemia. ('increase', 'PosReg', (104, 112)) ('polycythemia', 'Phenotype', 'HP:0001901', (146, 158)) ('erythropoietin', 'Gene', (116, 130)) ('HIF2A', 'Gene', '2034', (51, 56)) ('gain-of-function', 'PosReg', (21, 37)) ('erythropoietin', 'Gene', '2056', (116, 130)) ('congenital polycythemia', 'Disease', 'MESH:D011086', (135, 158)) ('mutations', 'Var', (38, 47)) ('HIF2A', 'Gene', (51, 56)) ('congenital polycythemia', 'Disease', (135, 158)) 76252 23481210 HIF-2alpha gene mutations were found to disrupt prolyl hydroxylation of HIF-2alpha and, in turn, recognition by the VHL protein, resulting in a failure of HIF-2alpha ubiquitylation and its degradation. ('HIF-2alpha', 'Gene', (155, 165)) ('HIF-2alpha', 'Gene', (72, 82)) ('HIF-2alpha', 'Gene', '2034', (0, 10)) ('recognition', 'MPA', (97, 108)) ('HIF-2alpha', 'Gene', '2034', (155, 165)) ('HIF-2alpha', 'Gene', '2034', (72, 82)) ('mutations', 'Var', (16, 25)) ('HIF-2alpha ubiquitylation', 'Disease', 'None', (155, 180)) ('VHL', 'Gene', (116, 119)) ('prolyl hydroxylation', 'MPA', (48, 68)) ('disrupt', 'NegReg', (40, 47)) ('HIF-2alpha ubiquitylation', 'Disease', (155, 180)) ('VHL', 'Gene', '7428', (116, 119)) ('failure', 'NegReg', (144, 151)) ('HIF-2alpha', 'Gene', (0, 10)) ('degradation', 'MPA', (189, 200)) 76253 23481210 Thus, the longer half-life of the mutant HIF-2alpha protein resulted in the upregulation of downstream HIF-2alpha targets (EDN1, EPO, GLUT1, and VEGF), which is currently believed to be the pathogenic mechanism that leads to tumor development. ('EDN1', 'Gene', '1906', (123, 127)) ('tumor', 'Disease', (225, 230)) ('half-life', 'MPA', (17, 26)) ('EPO', 'Gene', '2056', (129, 132)) ('tumor', 'Disease', 'MESH:D009369', (225, 230)) ('HIF-2alpha', 'Gene', '2034', (41, 51)) ('HIF-2alpha', 'Gene', '2034', (103, 113)) ('GLUT1', 'Gene', '6513', (134, 139)) ('EDN1', 'Gene', (123, 127)) ('EPO', 'Gene', (129, 132)) ('VEGF', 'Gene', '7422', (145, 149)) ('tumor', 'Phenotype', 'HP:0002664', (225, 230)) ('VEGF', 'Gene', (145, 149)) ('longer', 'PosReg', (10, 16)) ('HIF-2alpha', 'Gene', (41, 51)) ('HIF-2alpha', 'Gene', (103, 113)) ('GLUT1', 'Gene', (134, 139)) ('upregulation', 'PosReg', (76, 88)) ('protein', 'Protein', (52, 59)) ('mutant', 'Var', (34, 40)) 76254 23481210 Very recently, we have also identified a somatic HIF2A gene mutation in a patient with multiple PHEOs associated with polycythemia (unpublished observation). ('patient', 'Species', '9606', (74, 81)) ('mutation', 'Var', (60, 68)) ('polycythemia', 'Disease', 'MESH:D011086', (118, 130)) ('HIF2A', 'Gene', '2034', (49, 54)) ('PHEOs', 'Chemical', '-', (96, 101)) ('polycythemia', 'Disease', (118, 130)) ('HIF2A', 'Gene', (49, 54)) ('polycythemia', 'Phenotype', 'HP:0001901', (118, 130)) 76256 23481210 The first group (cluster 1) includes tumors carrying VHL and SDHx (SDHD, SDHB, SDHC, SDHA, and SDHAF2) mutations and also accounts for about 30% of sporadic tumors. ('SDHD', 'Gene', (67, 71)) ('SDHx', 'Gene', (61, 65)) ('tumors', 'Phenotype', 'HP:0002664', (37, 43)) ('tumor', 'Phenotype', 'HP:0002664', (157, 162)) ('mutations', 'Var', (103, 112)) ('tumors', 'Phenotype', 'HP:0002664', (157, 163)) ('SDHx', 'Chemical', '-', (61, 65)) ('VHL', 'Gene', (53, 56)) ('SDHC', 'Gene', '6391', (79, 83)) ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('tumors', 'Disease', (37, 43)) ('SDHAF2', 'Gene', '54949', (95, 101)) ('SDHAF2', 'Gene', (95, 101)) ('SDHA', 'Gene', (95, 99)) ('tumors', 'Disease', (157, 163)) ('VHL', 'Gene', '7428', (53, 56)) ('SDHA', 'Gene', '6389', (95, 99)) ('SDHB', 'Gene', '6390', (73, 77)) ('tumors', 'Disease', 'MESH:D009369', (37, 43)) ('SDHA', 'Gene', (85, 89)) ('sporadic tumors', 'Disease', (148, 163)) ('SDHC', 'Gene', (79, 83)) ('SDHD', 'Gene', '6392', (67, 71)) ('tumors', 'Disease', 'MESH:D009369', (157, 163)) ('SDHA', 'Gene', '6389', (85, 89)) ('sporadic tumors', 'Disease', 'MESH:D009369', (148, 163)) ('SDHB', 'Gene', (73, 77)) 76257 23481210 The second group (cluster 2) represents the tumors carrying NF1, RET, and KIF1Bbeta mutations, and also includes about 70% of sporadic tumors. ('tumors', 'Disease', (44, 50)) ('KIF1Bbeta', 'Gene', (74, 83)) ('RET', 'Gene', '5979', (65, 68)) ('tumors', 'Disease', 'MESH:D009369', (44, 50)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('tumors', 'Phenotype', 'HP:0002664', (44, 50)) ('NF1', 'Gene', '4763', (60, 63)) ('NF1', 'Gene', (60, 63)) ('sporadic tumors', 'Disease', 'MESH:D009369', (126, 141)) ('mutations', 'Var', (84, 93)) ('RET', 'Gene', (65, 68)) ('tumors', 'Disease', (135, 141)) ('tumors', 'Disease', 'MESH:D009369', (135, 141)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('sporadic tumors', 'Disease', (126, 141)) 76259 23481210 VHL/SDHx mutations lead to impaired degradation and accumulation of HIF-1/HIF-2alpha and display signatures of pseudohypoxia, angiogenesis, increased reactive oxygen species (ROS), and reduced oxidative response, resulting in changes in the cell metabolism (energy metabolism regulation). ('impaired degradation', 'Disease', 'MESH:D009422', (27, 47)) ('oxidative response', 'MPA', (193, 211)) ('pseudohypoxia', 'Disease', 'None', (111, 124)) ('mutations', 'Var', (9, 18)) ('HIF-1/HIF-2alpha', 'Disease', (68, 84)) ('accumulation', 'PosReg', (52, 64)) ('VHL', 'Gene', '7428', (0, 3)) ('increased', 'PosReg', (140, 149)) ('reduced', 'NegReg', (185, 192)) ('ROS', 'Chemical', 'MESH:D017382', (175, 178)) ('cell metabolism', 'MPA', (241, 256)) ('increased reactive oxygen species', 'Phenotype', 'HP:0025464', (140, 173)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (150, 173)) ('SDHx', 'Chemical', '-', (4, 8)) ('impaired degradation', 'Disease', (27, 47)) ('changes', 'Reg', (226, 233)) ('angiogenesis', 'CPA', (126, 138)) ('HIF-1/HIF-2alpha', 'Disease', 'MESH:C565162', (68, 84)) ('VHL', 'Gene', (0, 3)) ('pseudohypoxia', 'Disease', (111, 124)) 76262 23481210 Hydroxylated HIF-alpha is recognized by the VHL protein and marked for degradation in the proteasome. ('Hydroxylated', 'Var', (0, 12)) ('VHL', 'Gene', (44, 47)) ('degradation', 'MPA', (71, 82)) ('VHL', 'Gene', '7428', (44, 47)) ('HIF-alpha', 'Protein', (13, 22)) 76263 23481210 If the VHL gene is mutated, the protein is not formed, so HIF-alpha cannot be degraded and therefore accumulates. ('VHL', 'Gene', '7428', (7, 10)) ('VHL', 'Gene', (7, 10)) ('mutated', 'Var', (19, 26)) 76271 23481210 The SDHB mutation is associated with malignancy and poor prognosis. ('mutation', 'Var', (9, 17)) ('associated', 'Reg', (21, 31)) ('malignancy', 'Disease', 'MESH:D009369', (37, 47)) ('SDHB', 'Gene', '6390', (4, 8)) ('malignancy', 'Disease', (37, 47)) ('SDHB', 'Gene', (4, 8)) 76275 23481210 RET mutations have been associated with increased activation of PI3K/v-Akt signals. ('RET', 'Gene', '5979', (0, 3)) ('Akt', 'Gene', '11651', (71, 74)) ('Akt', 'Gene', (71, 74)) ('activation', 'PosReg', (50, 60)) ('RET', 'Gene', (0, 3)) ('mutations', 'Var', (4, 13)) 76277 23481210 Thus, RET and NF1 mutations lead to activation of the PI3K/AKT/ mTOR and RAS/RAF/MAPK signaling pathways. ('NF1', 'Gene', '4763', (14, 17)) ('RET', 'Gene', '5979', (6, 9)) ('activation', 'PosReg', (36, 46)) ('RET', 'Gene', (6, 9)) ('mTOR', 'Gene', (64, 68)) ('RAF', 'Gene', '22882', (77, 80)) ('mTOR', 'Gene', '2475', (64, 68)) ('RAF', 'Gene', (77, 80)) ('NF1', 'Gene', (14, 17)) ('mutations', 'Var', (18, 27)) 76278 23481210 TMEM127 mutations enhance mTOR activity independent of the RET and NF1 pathways. ('RET', 'Gene', '5979', (59, 62)) ('NF1', 'Gene', (67, 70)) ('NF1', 'Gene', '4763', (67, 70)) ('TMEM127', 'Gene', '55654', (0, 7)) ('mutations', 'Var', (8, 17)) ('RET', 'Gene', (59, 62)) ('enhance', 'PosReg', (18, 25)) ('mTOR', 'Gene', (26, 30)) ('mTOR', 'Gene', '2475', (26, 30)) ('TMEM127', 'Gene', (0, 7)) 76279 23481210 Finally, MAX gene mutations result in the dysregulation of the MYC-MAX-MXD1 network connected with mTOR pathway function. ('MAX', 'Gene', '4149', (9, 12)) ('MYC', 'Gene', (63, 66)) ('MXD1', 'Gene', '4084', (71, 75)) ('MAX', 'Gene', (67, 70)) ('MAX', 'Gene', (9, 12)) ('MXD1', 'Gene', (71, 75)) ('result in', 'Reg', (28, 37)) ('dysregulation', 'MPA', (42, 55)) ('mTOR', 'Gene', '2475', (99, 103)) ('MAX', 'Gene', '4149', (67, 70)) ('MYC', 'Gene', '4609', (63, 66)) ('mTOR', 'Gene', (99, 103)) ('mutations', 'Var', (18, 27)) 76286 23481210 Direct activation of PHD by the activator KRH102053 increases HIF-1/HIF-2alpha hydroxylation and promotes its degradation. ('degradation', 'MPA', (110, 121)) ('increases', 'PosReg', (52, 61)) ('HIF-1/HIF-2alpha hydroxylation', 'Disease', (62, 92)) ('HIF-1/HIF-2alpha hydroxylation', 'Disease', 'MESH:C565044', (62, 92)) ('promotes', 'PosReg', (97, 105)) ('KRH102053', 'Chemical', 'MESH:C530086', (42, 51)) ('KRH102053', 'Var', (42, 51)) 76294 23481210 showed that the combination treatment with dual NVP-BEZ235 (PI3K/mTORC1 inhibitor) and lovastatin (inhibitor of ERK signaling) had a significant additive effect in mouse PHEO cells and resulted in inhibition of both AKT and mTORC1/p70S6K signaling without ERK upregulation. ('p70S6K', 'Gene', (231, 237)) ('mouse', 'Species', '10090', (164, 169)) ('PHEO', 'Chemical', '-', (170, 174)) ('inhibition', 'NegReg', (197, 207)) ('mTORC1', 'Gene', '382056', (224, 230)) ('dual NVP-BEZ235', 'Var', (43, 58)) ('BEZ235', 'Chemical', 'MESH:C531198', (52, 58)) ('p70S6K', 'Gene', '72508', (231, 237)) ('mTORC1', 'Gene', '382056', (65, 71)) ('lovastatin', 'Chemical', 'MESH:D008148', (87, 97)) ('AKT', 'Pathway', (216, 219)) ('mTORC1', 'Gene', (65, 71)) ('mTORC1', 'Gene', (224, 230)) 76364 16913447 According to the theory of Perrier el al., functioning pheochromocytoma causes a catecholamine-induced cardiomyopathy, which contributes to the failure of the left ventricle, followed by pulmonary edema and release of amylase from hypoxic lung tissue. ('release', 'MPA', (207, 214)) ('functioning', 'Var', (43, 54)) ('catecholamine-induced', 'MPA', (81, 102)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (55, 71)) ('hypoxic lung', 'Disease', 'MESH:D008171', (231, 243)) ('pulmonary edema', 'Phenotype', 'HP:0100598', (187, 202)) ('pulmonary edema', 'Disease', 'MESH:D011654', (187, 202)) ('cardiomyopathy', 'Disease', (103, 117)) ('failure of the left ventricle', 'Phenotype', 'HP:0005162', (144, 173)) ('pulmonary edema', 'Disease', (187, 202)) ('edema', 'Phenotype', 'HP:0000969', (197, 202)) ('causes', 'Reg', (72, 78)) ('pheochromocytoma', 'Disease', (55, 71)) ('catecholamine', 'Chemical', 'MESH:D002395', (81, 94)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (55, 71)) ('hypoxic lung', 'Disease', (231, 243)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (103, 117)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (103, 117)) 76444 18794260 Scintigraphic imaging with [123I]-MIBG is advantageous because of its optimal gamma emissions and lack of beta particles that result in a lower absorbed dose compared to [131I]-MIBG. ('lower', 'NegReg', (138, 143)) ('beta', 'Chemical', '-', (106, 110)) ('absorbed dose', 'MPA', (144, 157)) ('gamma emissions', 'MPA', (78, 93)) ('[131I]-MIBG', 'Chemical', '-', (170, 181)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (27, 38)) ('lack', 'NegReg', (98, 102)) ('[123I]-MIBG', 'Var', (27, 38)) 76448 18794260 Although PET with [18F]-fluorodeoxyglucose (FDG), ([18F]-FDG) has been used with some success for imaging metastatic PHEO, it is nevertheless a non-specific ligand, which shows uptake in various tumors. ('tumors', 'Disease', (195, 201)) ('tumors', 'Disease', 'MESH:D009369', (195, 201)) ('tumors', 'Phenotype', 'HP:0002664', (195, 201)) ('PHEO', 'Phenotype', 'HP:0002666', (117, 121)) ('[18F]-FDG', 'Var', (51, 60)) ('FDG', 'Chemical', 'MESH:D019788', (44, 47)) ('FDG', 'Chemical', 'MESH:D019788', (57, 60)) ('[18F]-FDG', 'Chemical', 'MESH:D019788', (51, 60)) ('metastatic PHEO', 'Disease', (106, 121)) ('tumor', 'Phenotype', 'HP:0002664', (195, 200)) ('[18F]-fluorodeoxyglucose', 'Chemical', 'MESH:D019788', (18, 42)) 76449 18794260 Other ligands like [11C]-hydroxyephedrine and [11C]-epinephrine have also been used successfully for PET imaging of PHEOs. ('PHEOs', 'Chemical', '-', (116, 121)) ('[11C]-hydroxyephedrine', 'Var', (19, 41)) ('[11C]-epinephrine', 'Chemical', '-', (46, 63)) ('[11C]-hydroxyephedrine', 'Chemical', '-', (19, 41)) ('PHEO', 'Phenotype', 'HP:0002666', (116, 120)) ('[11C]-epinephrine', 'Var', (46, 63)) 76452 18794260 Our studies have suggested that [18F]-DA is a better agent for localization of metastatic PHEO than [131I]-MIBG (with 100% sensitivity vs. 56% sensitivity, respectively). ('metastatic PHEO', 'Disease', (79, 94)) ('[18F]-DA', 'Chemical', '-', (32, 40)) ('[18F]-DA', 'Var', (32, 40)) ('PHEO', 'Phenotype', 'HP:0002666', (90, 94)) ('[131I]-MIBG', 'Chemical', '-', (100, 111)) 76456 18794260 Nevertheless, in a small study of 10 patients with malignant PHEO and 3 patients with malignant paraganglioma that compared SRS vs. [131I]-MIBG or [123I]-MIBG scintigraphy, 26 lesions were MIBG- and SRS-positive, 15 lesions were only MIBG -positive and 7 lesions were only SRS-positive (overall sensitivity for [131I]-MIBG or [123I]-MIBG scintigraphy was 85% and 92% for SRS) The aim of this study was to compare [18F]-DA PET, [123I]-MIBG, and SRS in the localization of adrenal, extra-adrenal, and metastatic or multiple PHEOs in a large study from a single institution. ('MIBG', 'Chemical', 'MESH:D019797', (333, 337)) ('MIBG', 'Chemical', 'MESH:D019797', (189, 193)) ('SRS', 'Chemical', '-', (199, 202)) ('malignant paraganglioma', 'Disease', (86, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('[131I]-MIBG', 'Chemical', '-', (132, 143)) ('malignant paraganglioma', 'Disease', 'MESH:C565335', (86, 109)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (147, 158)) ('PHEOs', 'Chemical', '-', (523, 528)) ('PHEO', 'Phenotype', 'HP:0002666', (61, 65)) ('MIBG', 'Chemical', 'MESH:D019797', (435, 439)) ('MIBG', 'Chemical', 'MESH:D019797', (234, 238)) ('SRS', 'Chemical', '-', (371, 374)) ('[18F]-DA', 'Chemical', '-', (414, 422)) ('patients', 'Species', '9606', (37, 45)) ('SRS', 'Chemical', '-', (124, 127)) ('MIBG', 'Chemical', 'MESH:D019797', (139, 143)) ('[131I]-MIBG', 'Chemical', '-', (311, 322)) ('MIBG', 'Chemical', 'MESH:D019797', (154, 158)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (326, 337)) ('[123I]-MIBG', 'Var', (428, 439)) ('MIBG', 'Chemical', 'MESH:D019797', (318, 322)) ('SRS', 'Chemical', '-', (273, 276)) ('PHEO', 'Phenotype', 'HP:0002666', (523, 527)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (428, 439)) ('SRS', 'Chemical', '-', (445, 448)) ('patients', 'Species', '9606', (72, 80)) 76483 18794260 Sensitivity by patient was calculated as follows: (number of patients positive on [18F]-DA PET or [123I]-MIBG scintigraphy or SRS)/number of patients positive on CT/MRI. ('patient', 'Species', '9606', (15, 22)) ('patient', 'Species', '9606', (61, 68)) ('SRS', 'Chemical', '-', (126, 129)) ('patients', 'Species', '9606', (61, 69)) ('[18F]-DA', 'Chemical', '-', (82, 90)) ('patient', 'Species', '9606', (141, 148)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (98, 109)) ('CT/MRI', 'Gene', '78996', (162, 168)) ('positive', 'Reg', (70, 78)) ('[18F]-DA', 'Var', (82, 90)) ('CT/MRI', 'Gene', (162, 168)) ('patients', 'Species', '9606', (141, 149)) 76485 18794260 Sensitivity by region was calculated as follows: (number of regions positive on [18F]-DA PET or [123I]-MIBG scintigraphy or SRS)/number of regions positive on CT/MRI. ('[18F]-DA', 'Chemical', '-', (80, 88)) ('[18F]-DA', 'Var', (80, 88)) ('CT/MRI', 'Gene', '78996', (159, 165)) ('SRS', 'Chemical', '-', (124, 127)) ('CT/MRI', 'Gene', (159, 165)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (96, 107)) 76486 18794260 Only regions that were actually covered by [18F]-DA PET or [123I]-MIBG scintigraphy or SRS as well as by either CT or MRI (CT/MRI) were included. ('CT/MRI', 'Gene', (123, 129)) ('CT or MRI', 'Gene', (112, 121)) ('[18F]-DA', 'Chemical', '-', (43, 51)) ('[18F]-DA', 'Var', (43, 51)) ('CT or MRI', 'Gene', '78996', (112, 121)) ('SRS', 'Chemical', '-', (87, 90)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (59, 70)) ('CT/MRI', 'Gene', '78996', (123, 129)) 76490 18794260 Functional imaging included [18F]-DA PET and [123I]-MIBG scintigraphy in 16 patients with non-metastatic and 35 patients with metastatic PHEO and SRS in 7 patients with non-metastatic and 18 patients with metastatic PHEO. ('patients', 'Species', '9606', (76, 84)) ('patients', 'Species', '9606', (191, 199)) ('PHEO', 'Phenotype', 'HP:0002666', (216, 220)) ('patients', 'Species', '9606', (112, 120)) ('SRS', 'Chemical', '-', (146, 149)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (45, 56)) ('PHEO', 'Phenotype', 'HP:0002666', (137, 141)) ('patients', 'Species', '9606', (155, 163)) ('[123I]-MIBG', 'Var', (45, 56)) ('[18F]-DA', 'Chemical', '-', (28, 36)) ('[18F]-DA', 'Var', (28, 36)) 76496 18794260 More in detail, since evaluation on a per-lesion basis was feasible only on these patients with non-metastatic PHEO: 16 lesions positive on CT/MRI were "missed" by either [18F]-DA PET or [123I]-MIBG (in 16 patients), whereas 13 lesions positive on CT/MRI were "missed" by SRS (in 7 patients). ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (187, 198)) ('CT/MRI', 'Gene', (140, 146)) ('PHEO', 'Phenotype', 'HP:0002666', (111, 115)) ('patients', 'Species', '9606', (82, 90)) ('CT/MRI', 'Gene', '78996', (248, 254)) ('SRS', 'Chemical', '-', (272, 275)) ('CT/MRI', 'Gene', (248, 254)) ('[18F]-DA', 'Chemical', '-', (171, 179)) ('patients', 'Species', '9606', (206, 214)) ('[123I', 'Var', (187, 192)) ('CT/MRI', 'Gene', '78996', (140, 146)) ('[18F', 'Var', (171, 175)) ('patients', 'Species', '9606', (282, 290)) 76497 18794260 In patients with metastatic PHEO, negative functional imaging studies were obtained in 4 patients with [18F]-DA PET, 9 patients with [123I]-MIBG scintigraphy and 1 patient with SRS. ('patient', 'Species', '9606', (119, 126)) ('PHEO', 'Phenotype', 'HP:0002666', (28, 32)) ('patient', 'Species', '9606', (89, 96)) ('patient', 'Species', '9606', (164, 171)) ('patients', 'Species', '9606', (119, 127)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (133, 144)) ('patient', 'Species', '9606', (3, 10)) ('[18F]-DA PET', 'Var', (103, 115)) ('patients', 'Species', '9606', (89, 97)) ('SRS', 'Chemical', '-', (177, 180)) ('patients', 'Species', '9606', (3, 11)) ('metastatic PHEO', 'Disease', (17, 32)) ('[18F]-DA', 'Chemical', '-', (103, 111)) 76498 18794260 For this available cohort, on a per-patient basis, sensitivity was equal for [18F]-DA PET and [123I]-MIBG scintigraphy (87.5%) and lower for SRS (28.5%) in patients with non-metastatic PHEO (Table 1). ('patients', 'Species', '9606', (156, 164)) ('PHEO', 'Phenotype', 'HP:0002666', (185, 189)) ('SRS', 'Chemical', '-', (141, 144)) ('[18F]-DA', 'Chemical', '-', (77, 85)) ('lower', 'NegReg', (131, 136)) ('[18F]-DA', 'Var', (77, 85)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (94, 105)) ('non-metastatic PHEO', 'Disease', (170, 189)) ('patient', 'Species', '9606', (36, 43)) ('patient', 'Species', '9606', (156, 163)) 76499 18794260 In patients with metastatic PHEO, sensitivity was 91.4% for [18F]-DA PET, 70.6% for [123I]-MIBG, and 88.9% for SRS (Table 1). ('PHEO', 'Phenotype', 'HP:0002666', (28, 32)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (84, 95)) ('[18F]-DA', 'Chemical', '-', (60, 68)) ('[123I]-MIBG', 'Var', (84, 95)) ('[18F]-DA', 'Var', (60, 68)) ('patients', 'Species', '9606', (3, 11)) ('SRS', 'Chemical', '-', (111, 114)) ('metastatic PHEO', 'Disease', (17, 32)) 76501 18794260 Furthermore, on a per-region basis, sensitivity for [18F]-DA PET was 67%, 75% for [123I]-MIBG, and 37.5% for SRS in patients with non-metastatic PHEO (Table 2). ('[18F]-DA', 'Chemical', '-', (52, 60)) ('[18F]-DA', 'Var', (52, 60)) ('patients', 'Species', '9606', (116, 124)) ('PHEO', 'Phenotype', 'HP:0002666', (145, 149)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (82, 93)) ('[123I]-MIBG', 'Var', (82, 93)) ('non-metastatic PHEO', 'Disease', (130, 149)) ('SRS', 'Chemical', '-', (109, 112)) 76502 18794260 In patients with metastatic PHEO, sensitivity with [18F]-DA PET was 78.4%, 58.9% for [123I]-MIBG, and 68.5% for SRS (Table 2). ('[18F]-DA', 'Var', (51, 59)) ('PHEO', 'Phenotype', 'HP:0002666', (28, 32)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (85, 96)) ('[123I]-MIBG', 'Var', (85, 96)) ('patients', 'Species', '9606', (3, 11)) ('[18F]-DA', 'Chemical', '-', (51, 59)) ('metastatic PHEO', 'Disease', (17, 32)) ('SRS', 'Chemical', '-', (112, 115)) 76503 18794260 Overall sensitivity (combined for non-metastatic and metastatic PHEO) was 75.4% for [18F]-DA PET, 63.4% for [123I]-MIBG, and 64.0% for SRS. ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (108, 119)) ('[18F]-DA', 'Chemical', '-', (84, 92)) ('[18F]-DA', 'Var', (84, 92)) ('SRS', 'Chemical', '-', (135, 138)) ('PHEO', 'Phenotype', 'HP:0002666', (64, 68)) ('[123I', 'Var', (108, 113)) 76506 18794260 In patients with non-metastatic PHEO that were studied with all three functional imaging modalities, [18F]-DA PET and [123I]-MIBG scintigraphy were more positive on a per patient and on a per region basis than SRS (Table 3; Figure 1). ('[123I]-MIBG', 'Var', (118, 129)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (118, 129)) ('[18F]-DA', 'Chemical', '-', (101, 109)) ('patient', 'Species', '9606', (171, 178)) ('[18F]-DA', 'Var', (101, 109)) ('SRS', 'Chemical', '-', (210, 213)) ('patient', 'Species', '9606', (3, 10)) ('positive', 'MPA', (153, 161)) ('PHEO', 'Phenotype', 'HP:0002666', (32, 36)) ('patients', 'Species', '9606', (3, 11)) 76507 18794260 In patients with metastatic PHEO that were studied with all three functional imaging modalities [18F]-DA PET and SRS were more positive on a per patient basis than [123I]-MIBG scintigraphy, whereas on a per region basis, SRS was more positive than [18F]-DA PET and [123I]-MIBG scintigraphy (Table 3; Figure 2). ('SRS', 'Chemical', '-', (113, 116)) ('PHEO', 'Phenotype', 'HP:0002666', (28, 32)) ('positive', 'PosReg', (127, 135)) ('patient', 'Species', '9606', (3, 10)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (164, 175)) ('[18F]-DA', 'Var', (96, 104)) ('patient', 'Species', '9606', (145, 152)) ('patients', 'Species', '9606', (3, 11)) ('[18F]-DA', 'Chemical', '-', (96, 104)) ('SRS', 'Chemical', '-', (221, 224)) ('metastatic PHEO', 'Disease', (17, 32)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (265, 276)) ('[18F]-DA', 'Chemical', '-', (248, 256)) 76508 18794260 In the present -- largest to date -- comparison study of [18F]-DA PET with [123I]-MIBG scintigraphy and SRS in 17 patients with non-metastatic PHEO and 36 patients with metastatic PHEO, overall more foci of uptake were shown with [18F]-DA PET than with the other functional imaging modalities. ('PHEO', 'Phenotype', 'HP:0002666', (143, 147)) ('[18F]-DA PET', 'Var', (230, 242)) ('more', 'PosReg', (194, 198)) ('uptake', 'MPA', (207, 213)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (75, 86)) ('[18F]-DA', 'Chemical', '-', (57, 65)) ('SRS', 'Chemical', '-', (104, 107)) ('PHEO', 'Phenotype', 'HP:0002666', (180, 184)) ('[18F]-DA', 'Chemical', '-', (230, 238)) ('patients', 'Species', '9606', (155, 163)) ('patients', 'Species', '9606', (114, 122)) ('foci', 'MPA', (199, 203)) 76512 18794260 In many patients with PHEO (especially those with extra-adrenal PHEO, adrenal PHEO larger than 5 cm, or in patients with mutations of genes encoding mainly subunits B and D of the mitochondrial enzyme succinate dehydrogenase; SDHB and SDHD), the possibility of metastatic disease or multiple tumors should be considered (or excluded). ('tumor', 'Phenotype', 'HP:0002664', (292, 297)) ('mutations', 'Var', (121, 130)) ('tumors', 'Phenotype', 'HP:0002664', (292, 298)) ('SDHD', 'Gene', (235, 239)) ('SDHD', 'Gene', '6392', (235, 239)) ('SDHB', 'Gene', '6390', (226, 230)) ('PHEO', 'Disease', (22, 26)) ('multiple tumors', 'Disease', 'MESH:D009369', (283, 298)) ('PHEO', 'Phenotype', 'HP:0002666', (78, 82)) ('multiple tumors', 'Disease', (283, 298)) ('SDHB', 'Gene', (226, 230)) ('PHEO', 'Phenotype', 'HP:0002666', (64, 68)) ('PHEO', 'Phenotype', 'HP:0002666', (22, 26)) ('patients', 'Species', '9606', (107, 115)) ('patients', 'Species', '9606', (8, 16)) 76514 18794260 While we do not have surgical confirmation that the lesions seen on functional imaging and not on anatomical imaging were PHEO, we feel confident that most of them were real based on clinical follow-up, including improvement after chemotherapy or [131I]-MIBG therapy in many cases. ('[131I]-MIBG', 'Chemical', '-', (247, 258)) ('[131I]-MIBG', 'Var', (247, 258)) ('improvement', 'PosReg', (213, 224)) ('PHEO', 'Phenotype', 'HP:0002666', (122, 126)) ('men', 'Species', '9606', (220, 223)) 76515 18794260 Several PET imaging agents have been used for localizing PHEO, including [18F]-FDG, [11C]-hydroxyephedrine, [11C]-epinephrine, [18F]-DA, and [18F]-dihydroxyphenylalanine ([18F]-DOPA). ('[11C]-hydroxyephedrine', 'Chemical', '-', (84, 106)) ('[11C]-hydroxyephedrine', 'Var', (84, 106)) ('[11C]-epinephrine', 'Chemical', '-', (108, 125)) ('[18F]-FDG', 'Var', (73, 82)) ('[18F]-DOPA', 'Chemical', 'MESH:C043437', (171, 181)) ('[18F]-DA', 'Chemical', '-', (127, 135)) ('PHEO', 'Phenotype', 'HP:0002666', (57, 61)) ('[18F]-FDG', 'Chemical', 'MESH:D019788', (73, 82)) ('[11C]-epinephrine', 'Var', (108, 125)) ('[18F]-dihydroxyphenylalanine', 'Chemical', '-', (141, 169)) 76517 18794260 Furthermore, [18F]-FDG-PET was recently shown to be superior to [18F]-DA or [123I]-MIBG in localizing metastases of highly malignant paragangliomas (in particular those with SHDB mutations). ('paragangliomas', 'Disease', (133, 147)) ('malignant paraganglioma', 'Disease', (123, 146)) ('paragangliomas', 'Disease', 'MESH:D010235', (133, 147)) ('malignant paraganglioma', 'Disease', 'MESH:C565335', (123, 146)) ('[18F]-FDG-PET', 'Var', (13, 26)) ('[18F]-DA', 'Chemical', '-', (64, 72)) ('paragangliomas', 'Phenotype', 'HP:0002668', (133, 147)) ('metastases', 'Disease', (102, 112)) ('localizing', 'MPA', (91, 101)) ('[18F]-FDG', 'Chemical', 'MESH:D019788', (13, 22)) ('mutations', 'Var', (179, 188)) ('SHDB', 'Gene', (174, 178)) ('paraganglioma', 'Phenotype', 'HP:0002668', (133, 146)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (76, 87)) ('metastases', 'Disease', 'MESH:D009362', (102, 112)) 76519 18794260 PET with [11C]-hydroxyephedrine and [11C]-epinephrine have yielded better results compared to [18F]-FDG in terms of the diagnostic localization of pheochromocytoma, although the short physical half-lives (T1/2 = 20 min) of these radiopharmaceuticals will likely preclude their more widespread use. ('[11C]-hydroxyephedrine', 'Chemical', '-', (9, 31)) ('pheochromocytoma', 'Disease', (147, 163)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (147, 163)) ('[11C]-epinephrine', 'Chemical', '-', (36, 53)) ('[11C', 'Var', (36, 40)) ('T1/2 = 20', 'Gene', '921', (205, 214)) ('[18F]-FDG', 'Chemical', 'MESH:D019788', (94, 103)) ('T1/2 = 20', 'Gene', (205, 214)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (147, 163)) 76521 18794260 In the former group, all tumors were localized with [18F]-DOPA PET, while in the latter group, [18F]-DOPA PET imaging was concordant with MRI results in 1 of 3 patients and imaged a tumor that was not seen with [131I]-MIBG scintigraphy. ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('patients', 'Species', '9606', (160, 168)) ('tumor', 'Disease', (182, 187)) ('tumors', 'Disease', (25, 31)) ('tumors', 'Phenotype', 'HP:0002664', (25, 31)) ('tumor', 'Disease', (25, 30)) ('[18F]-DOPA PET', 'Var', (52, 66)) ('[18F]-DOPA', 'Chemical', 'MESH:C043437', (95, 105)) ('tumors', 'Disease', 'MESH:D009369', (25, 31)) ('tumor', 'Disease', 'MESH:D009369', (182, 187)) ('[131I]-MIBG', 'Chemical', '-', (211, 222)) ('tumor', 'Disease', 'MESH:D009369', (25, 30)) ('[18F]-DOPA', 'Chemical', 'MESH:C043437', (52, 62)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) 76526 18794260 In the present study, in patients with non-metastatic (mainly adrenal) PHEOs, [18F]-DA and [123I]-MIBG had equivalent sensitivities for tumor detection, and both were superior to SRS. ('SRS', 'Chemical', '-', (179, 182)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (91, 102)) ('tumor', 'Disease', 'MESH:D009369', (136, 141)) ('[18F]-DA', 'Chemical', '-', (78, 86)) ('[18F]-DA', 'Var', (78, 86)) ('[123I]-MIBG', 'Var', (91, 102)) ('patients', 'Species', '9606', (25, 33)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('PHEO', 'Phenotype', 'HP:0002666', (71, 75)) ('tumor', 'Disease', (136, 141)) ('PHEOs', 'Chemical', '-', (71, 76)) 76527 18794260 In patients with metastatic disease, [18F]-DA was superior to [123I]-MIBG and detected more lesions. ('[18F]-DA', 'Chemical', '-', (37, 45)) ('[18F]-DA', 'Var', (37, 45)) ('metastatic disease', 'Disease', (17, 35)) ('patients', 'Species', '9606', (3, 11)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (62, 73)) 76533 18794260 Using [123I]-MIBG, sensitivity is elevated to 78%-91% and specificity is preserved. ('sensitivity', 'MPA', (19, 30)) ('[123I]-MIBG', 'Var', (6, 17)) ('elevated', 'PosReg', (34, 42)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (6, 17)) 76534 18794260 In the present study, [123I]-MIBG was as sensitive as [18F]-DA, and definitely superior to SRS in localizing non-metastatic PHEO. ('non-metastatic PHEO', 'Disease', (109, 128)) ('PHEO', 'Phenotype', 'HP:0002666', (124, 128)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (22, 33)) ('[18F]-DA', 'Chemical', '-', (54, 62)) ('[123I]-MIBG', 'Var', (22, 33)) ('SRS', 'Chemical', '-', (91, 94)) 76554 18794260 In conclusion, this study shows that in the diagnostic evaluation of PHEO, [18F]-DA PET and [123I]-MIBG are more sensitive than SRS in detecting non-metastatic primary adrenal PHEO. ('PHEO', 'Phenotype', 'HP:0002666', (69, 73)) ('non-metastatic primary adrenal PHEO', 'Disease', (145, 180)) ('PHEO', 'Phenotype', 'HP:0002666', (176, 180)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (92, 103)) ('[18F]-DA', 'Chemical', '-', (75, 83)) ('SRS', 'Chemical', '-', (128, 131)) ('[18F]-DA', 'Var', (75, 83)) ('[123I', 'Var', (92, 97)) 76555 18794260 For metastatic PHEO, [18F]-DA is more sensitive than SRS, and both are superior to [123I]-MIBG. ('PHEO', 'Phenotype', 'HP:0002666', (15, 19)) ('[18F]-DA', 'Chemical', '-', (21, 29)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (83, 94)) ('[18F]-DA', 'Var', (21, 29)) ('metastatic PHEO', 'Disease', (4, 19)) ('SRS', 'Chemical', '-', (53, 56)) 76633 31977860 Although the MRI findings in our case, such as low SI on T1WI and relatively high SI on T2WI, did not allow a specific diagnosis to be made, it has been reported that venous malformations typically show uniformly high SI on T2WI, whereas capillary hemangiomas tend to be less intense because of shrinkage due to different degrees of fibrosis and hemosiderin deposition. ('hemangiomas', 'Phenotype', 'HP:0001028', (248, 259)) ('T2WI', 'Var', (224, 228)) ('fibrosis', 'Disease', (333, 341)) ('capillary hemangioma', 'Phenotype', 'HP:0005306', (238, 258)) ('venous malformations', 'Disease', (167, 187)) ('venous malformations', 'Phenotype', 'HP:0012721', (167, 187)) ('hemosiderin deposition', 'Phenotype', 'HP:0012543', (346, 368)) ('fibrosis', 'Disease', 'MESH:D005355', (333, 341)) ('capillary hemangiomas', 'Disease', 'MESH:D018324', (238, 259)) ('hemangioma', 'Phenotype', 'HP:0001028', (248, 258)) ('capillary hemangiomas', 'Phenotype', 'HP:0005306', (238, 259)) ('high SI', 'Var', (213, 220)) ('venous malformations', 'Disease', 'MESH:C563977', (167, 187)) ('capillary hemangiomas', 'Disease', (238, 259)) 76675 26997533 Because of its cost-effectiveness, especially in examining paragangliomas, which are related to SDHx mutations, fluorodeoxyglucose-positron emission tomography (FDG-PET ) is another option for imaging. ('mutations', 'Var', (101, 110)) ('paragangliomas', 'Disease', (59, 73)) ('paragangliomas', 'Disease', 'MESH:D010235', (59, 73)) ('paragangliomas', 'Phenotype', 'HP:0002668', (59, 73)) ('paraganglioma', 'Phenotype', 'HP:0002668', (59, 72)) ('SDHx', 'Gene', (96, 100)) ('SDHx', 'Chemical', '-', (96, 100)) 76692 29606699 Ten years prior to presentation the patient had been diagnosed with succinate dehydrogenase-B (SDHB) mutant metastatic paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (119, 132)) ('SDHB', 'Gene', '6390', (95, 99)) ('paraganglioma', 'Disease', (119, 132)) ('mutant', 'Var', (101, 107)) ('SDHB', 'Gene', (95, 99)) ('paraganglioma', 'Disease', 'MESH:D010235', (119, 132)) ('succinate dehydrogenase-B', 'Gene', '6390', (68, 93)) ('succinate dehydrogenase-B', 'Gene', (68, 93)) ('patient', 'Species', '9606', (36, 43)) 76711 29606699 Lifelong follow-up is recommended especially for young patients, for those with germline mutations (such as SDHB), for extra-adrenal tumors, and for large tumor size. ('tumor', 'Disease', 'MESH:D009369', (155, 160)) ('tumors', 'Phenotype', 'HP:0002664', (133, 139)) ('SDHB', 'Gene', (108, 112)) ('tumor', 'Phenotype', 'HP:0002664', (155, 160)) ('tumor', 'Disease', 'MESH:D009369', (133, 138)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('tumor', 'Disease', (155, 160)) ('extra-adrenal tumors', 'Disease', 'MESH:D010236', (119, 139)) ('extra-adrenal tumors', 'Disease', (119, 139)) ('tumor', 'Disease', (133, 138)) ('patients', 'Species', '9606', (55, 63)) ('SDHB', 'Gene', '6390', (108, 112)) ('germline mutations', 'Var', (80, 98)) 76712 29606699 Malignant paragangliomas are more common in carriers of the SDHB mutation. ('paraganglioma', 'Phenotype', 'HP:0002668', (10, 23)) ('SDHB', 'Gene', '6390', (60, 64)) ('SDHB', 'Gene', (60, 64)) ('Malignant paragangliomas', 'Disease', (0, 24)) ('paragangliomas', 'Phenotype', 'HP:0002668', (10, 24)) ('carriers', 'Reg', (44, 52)) ('mutation', 'Var', (65, 73)) ('Malignant paragangliomas', 'Disease', 'MESH:C565335', (0, 24)) ('common', 'Reg', (34, 40)) 76713 29606699 The mainstay of treatment at this stage is systemic therapy, including the aforementioned 131I MIBG therapy, or the more recently validated peptide receptor radionuclide therapy that has been associated with some overall survival benefit. ('131I', 'Var', (90, 94)) ('131I MIBG', 'Chemical', '-', (90, 99)) ('MIBG', 'Gene', (95, 99)) 76798 28553607 However, at the beginning of the 21st century, 10% rule was dashed by a study from Neumann et al., which reported germline mutation in 24% of apparently sporadic PCC/PGL patients. ('patients', 'Species', '9606', (170, 178)) ('PCC', 'Gene', (162, 165)) ('germline mutation', 'Var', (114, 131)) ('PCC', 'Gene', '1421', (162, 165)) 76852 28553607 High prevalence of extra-adrenal PCC in Spanish study is probably due to founder SDHB mutations in the population, which are associated with extra-adrenal PGL. ('mutations', 'Var', (86, 95)) ('PCC', 'Gene', (33, 36)) ('SDHB', 'Gene', '6390', (81, 85)) ('PCC', 'Gene', '1421', (33, 36)) ('associated with', 'Reg', (125, 140)) ('extra-adrenal PGL', 'Disease', (141, 158)) ('SDHB', 'Gene', (81, 85)) 76868 28553607 The study also reported extra-paraganglial tumors in 43% of patients with the highest prevalence among children with VHL mutations (65%) and NF-1 (100%). ('mutations', 'Var', (121, 130)) ('children', 'Species', '9606', (103, 111)) ('patients', 'Species', '9606', (60, 68)) ('VHL', 'Disease', (117, 120)) ('VHL', 'Disease', 'MESH:D006623', (117, 120)) ('paraganglial tumors', 'Phenotype', 'HP:0002668', (30, 49)) ('tumors', 'Disease', (43, 49)) ('tumors', 'Phenotype', 'HP:0002664', (43, 49)) ('tumors', 'Disease', 'MESH:D009369', (43, 49)) 76872 28553607 However, recent studies have demonstrated germline mutations in up to 40% of patients with PCC/PGL. ('PCC', 'Gene', '1421', (91, 94)) ('patients', 'Species', '9606', (77, 85)) ('PCC', 'Gene', (91, 94)) ('germline mutations', 'Var', (42, 60)) 76874 28553607 Prevalence of germline mutations in pediatric PCC/PGL cohorts is even higher and varied from 69% to 81% with overall prevalence of 79.4% [Table 4]. ('PCC', 'Gene', '1421', (46, 49)) ('germline mutations', 'Var', (14, 32)) ('PCC', 'Gene', (46, 49)) 76875 28553607 Mutations in VHL were the most common and seen in 45.5% of the pediatric PCC/PGL patients, whereas SDHB and SDHD mutations were the second (18.28%) and third (9.32%) most common. ('SDHD', 'Gene', '6392', (108, 112)) ('VHL', 'Disease', (13, 16)) ('seen', 'Reg', (42, 46)) ('VHL', 'Disease', 'MESH:D006623', (13, 16)) ('PCC', 'Gene', '1421', (73, 76)) ('patients', 'Species', '9606', (81, 89)) ('SDHB', 'Gene', '6390', (99, 103)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (99, 103)) ('PCC', 'Gene', (73, 76)) ('SDHD', 'Gene', (108, 112)) 76880 28553607 Prevalence of germline mutations in solitary nonmetastatic PCC with no family history was 62% (8/13) in the Babic et al. ('PCC', 'Gene', '1421', (59, 62)) ('germline mutations', 'Var', (14, 32)) ('PCC', 'Gene', (59, 62)) 76881 28553607 study from Spain where SDHB founder mutations are present, 53.3% of children with apparently sporadic PCC/PGL had germline mutations, the most common being SDHB mutations. ('SDHB', 'Gene', '6390', (156, 160)) ('PCC', 'Gene', '1421', (102, 105)) ('SDHB', 'Gene', '6390', (23, 27)) ('SDHB', 'Gene', (156, 160)) ('PCC', 'Gene', (102, 105)) ('SDHB', 'Gene', (23, 27)) ('mutations', 'Var', (161, 170)) ('children', 'Species', '9606', (68, 76)) ('common', 'Reg', (143, 149)) 76886 27777699 Tetralogy of Fallot and pheochromocytoma in a situs inversus totalis: An unusual association Introduction: Situs inversus totalis is an uncommon anomaly which exist a complete transposition of organs and it's occasionally associated with congenital heart diseases, such as tetralogy of fallot. ('associated', 'Reg', (223, 233)) ('anomaly', 'Disease', 'MESH:D000014', (146, 153)) ('congenital heart disease', 'Disease', 'MESH:D006331', (239, 263)) ('congenital heart diseases', 'Disease', 'MESH:D006331', (239, 264)) ('congenital heart', 'Phenotype', 'HP:0001627', (239, 255)) ('situs inversus', 'Phenotype', 'HP:0001696', (47, 61)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (25, 41)) ('tetralogy of fallot', 'Disease', (274, 293)) ('anomaly', 'Disease', (146, 153)) ('congenital heart diseases', 'Disease', (239, 264)) ('heart disease', 'Disease', 'MESH:D006331', (250, 263)) ('pheochromocytoma', 'Disease', (25, 41)) ('Situs inversus', 'Phenotype', 'HP:0001696', (108, 122)) ('congenital heart disease', 'Phenotype', 'HP:0001627', (239, 263)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (25, 41)) ('anomaly which exist a complete transposition', 'Phenotype', 'HP:0011540', (146, 190)) ('tetralogy of fallot', 'Phenotype', 'HP:0001636', (274, 293)) ('Situs', 'Var', (108, 113)) ('Tetralogy of Fallot', 'Phenotype', 'HP:0001636', (1, 20)) 76920 27777699 Up to a dozen inherited genetic mutations have been identified in pheochromocytoma-associated syndromes listed above, which include mutations in the VHL, RET, NF1, SDHx, and SDHAF2 genes. ('NF1', 'Gene', '4763', (159, 162)) ('VHL', 'Gene', '7428', (149, 152)) ('RET', 'Gene', (154, 157)) ('SDHAF2', 'Gene', '54949', (174, 180)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (66, 82)) ('mutations', 'Var', (132, 141)) ('mutations', 'Var', (32, 41)) ('SDHx', 'Gene', (164, 168)) ('RET', 'Gene', '5979', (154, 157)) ('pheochromocytoma-associated syndromes', 'Disease', (66, 103)) ('VHL', 'Gene', (149, 152)) ('NF1', 'Gene', (159, 162)) ('SDHAF2', 'Gene', (174, 180)) 76929 27777699 In accordance with this study, patients with CCHD have a greater risk of developing pheochromocytoma or paraganglioma (OR: 6.0) than patients with non-CCHD (OR: 0.9). ('pheochromocytoma', 'Phenotype', 'HP:0002666', (84, 100)) ('CCHD', 'Var', (45, 49)) ('non-CCHD', 'Disease', (147, 155)) ('paraganglioma', 'Phenotype', 'HP:0002668', (104, 117)) ('pheochromocytoma or paraganglioma', 'Disease', (84, 117)) ('pheochromocytoma or paraganglioma', 'Disease', 'MESH:D010673', (84, 117)) ('non-CCHD', 'Disease', 'MESH:C580335', (147, 155)) 76969 25610696 Immunohistochemical staining demonstrated positivity for chromogranin (Figure 2(c)) and synaptophysin (Figure 2(d)) with a low Ki-67 proliferative index (Figure 3). ('Ki-67 proliferative index', 'CPA', (127, 152)) ('synaptophysin', 'Gene', (88, 101)) ('positivity', 'Var', (42, 52)) ('chromogranin', 'Protein', (57, 69)) ('synaptophysin', 'Gene', '6855', (88, 101)) 76998 23550148 Succinate Dehydrogenase Mutation Underlies Global Epigenomic Divergence in Gastrointestinal Stromal Tumor Gastrointestinal stromal tumors (GIST) harbor driver mutations of signal transduction kinases such as KIT, or, alternatively, manifest loss-of-function defects in the mitochondrial succinate dehydrogenase (SDH) complex, a component of the Krebs cycle and electron transport chain. ('GIST', 'Phenotype', 'HP:0100723', (139, 143)) ('SDH', 'Gene', (312, 315)) ('SDH', 'Gene', '6390', (312, 315)) ('mutations', 'Var', (159, 168)) ('Gastrointestinal Stromal Tumor', 'Disease', 'MESH:D046152', (75, 105)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('KIT', 'Gene', (208, 211)) ('succinate', 'Chemical', 'MESH:D019802', (287, 296)) ('Tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('Gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (106, 137)) ('Mutation', 'Var', (24, 32)) ('loss-of-function defects', 'NegReg', (241, 265)) ('tumors', 'Phenotype', 'HP:0002664', (131, 137)) ('Gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (106, 136)) ('Gastrointestinal Stromal Tumor', 'Phenotype', 'HP:0100723', (75, 105)) ('Krebs', 'Chemical', '-', (345, 350)) ('Gastrointestinal Stromal Tumor', 'Disease', (75, 105)) ('Gastrointestinal stromal tumors', 'Disease', (106, 137)) 77006 23550148 DNA methylation profiles have been shown to carry clinical predictive and/or prognostic value for multiple tumor types, and thus epigenotype-phenotype correlation is a powerful approach in cancer discovery and translational research. ('methylation profiles', 'Var', (4, 24)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumor', 'Disease', (107, 112)) ('cancer', 'Phenotype', 'HP:0002664', (189, 195)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) ('cancer', 'Disease', 'MESH:D009369', (189, 195)) ('cancer', 'Disease', (189, 195)) 77008 23550148 Gastrointestinal stromal tumor (GIST), the most common mesenchymal tumor of the gastrointestinal tract, is alternatively driven by mutant cell surface KIT kinase pathway hyperactivation or mitochondrial metabolic derangement due to frequent mutation of succinate dehydrogenase complex (SDH) subunit genes SDHA, SDHB, SDHC, or SDHD. ('SDH', 'Gene', (305, 308)) ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('metabolic derangement', 'Phenotype', 'HP:0001939', (203, 224)) ('Gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (0, 30)) ('SDHD', 'Gene', '6392', (326, 330)) ('SDHA', 'Gene', '6389', (305, 309)) ('SDHB', 'Gene', (311, 315)) ('SDH', 'Gene', '6390', (326, 329)) ('tumor of the gastrointestinal tract', 'Disease', 'MESH:D004067', (67, 102)) ('SDH', 'Gene', (311, 314)) ('SDH', 'Gene', '6390', (286, 289)) ('SDH', 'Gene', '6390', (317, 320)) ('succinate', 'Chemical', 'MESH:D019802', (253, 262)) ('hyperactivation', 'PosReg', (170, 185)) ('SDHD', 'Gene', (326, 330)) ('SDHC', 'Gene', '6391', (317, 321)) ('mutation', 'Var', (241, 249)) ('tumor of the gastrointestinal tract', 'Disease', (67, 102)) ('mitochondrial', 'MPA', (189, 202)) ('SDH', 'Gene', (326, 329)) ('SDH', 'Gene', '6390', (305, 308)) ('tumor', 'Phenotype', 'HP:0002664', (67, 72)) ('SDH', 'Gene', (286, 289)) ('SDH', 'Gene', (317, 320)) ('GIST', 'Phenotype', 'HP:0100723', (32, 36)) ('tumor of the gastrointestinal tract', 'Phenotype', 'HP:0007378', (67, 102)) ('mitochondrial metabolic derangement', 'Phenotype', 'HP:0003287', (189, 224)) ('mutant', 'Var', (131, 137)) ('SDHC', 'Gene', (317, 321)) ('SDH', 'Gene', '6390', (311, 314)) ('SDHB', 'Gene', '6390', (311, 315)) ('Gastrointestinal stromal tumor', 'Disease', (0, 30)) ('Gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (0, 30)) ('SDHA', 'Gene', (305, 309)) 77016 23550148 And more recently, SDH knockdown was found to elevate intracellular succinate levels and the succinate/alpha-KG ratio, which in turn was shown to antagonize TET2 dioxygenase-catalyzed oxidation of 5-methylcytosine (5-mC) to 5-hydroxymethylcytosine (5-hmC), i.e., the initial step in the DNA demethylation pathway. ('SDH', 'Gene', (19, 22)) ('5-hydroxymethylcytosine', 'Chemical', 'MESH:C011865', (224, 247)) ('succinate', 'Chemical', 'MESH:D019802', (93, 102)) ('succinate/alpha-KG', 'MPA', (93, 111)) ('5-hmC', 'Chemical', 'MESH:C011865', (249, 254)) ('antagonize', 'NegReg', (146, 156)) ('knockdown', 'Var', (23, 32)) ('5-methylcytosine', 'Chemical', 'MESH:D044503', (197, 213)) ('TET2', 'Gene', '54790', (157, 161)) ('oxidation', 'MPA', (184, 193)) ('elevate intracellular succinate', 'Phenotype', 'HP:0020149', (46, 77)) ('succinate', 'Chemical', 'MESH:D019802', (68, 77)) ('SDH', 'Gene', '6390', (19, 22)) ('elevate', 'PosReg', (46, 53)) ('intracellular succinate levels', 'MPA', (54, 84)) ('alpha-KG', 'Chemical', 'MESH:D007656', (103, 111)) ('TET2', 'Gene', (157, 161)) ('5-mC', 'Chemical', 'MESH:D044503', (215, 219)) 77020 23550148 We then compare the methylomes of multiple Krebs cycle-mutant tumors across disparate developmental lineages including GIST, paraganglioma, pheochromocytoma, and glioma. ('glioma', 'Disease', (132, 138)) ('paraganglioma', 'Disease', 'MESH:D010235', (125, 138)) ('tumors', 'Phenotype', 'HP:0002664', (62, 68)) ('glioma', 'Disease', 'MESH:D005910', (132, 138)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (140, 156)) ('Krebs', 'Chemical', '-', (43, 48)) ('tumor', 'Phenotype', 'HP:0002664', (62, 67)) ('glioma', 'Disease', (162, 168)) ('tumors', 'Disease', (62, 68)) ('pheochromocytoma', 'Disease', (140, 156)) ('glioma', 'Phenotype', 'HP:0009733', (132, 138)) ('paraganglioma', 'Phenotype', 'HP:0002668', (125, 138)) ('glioma', 'Disease', 'MESH:D005910', (162, 168)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (140, 156)) ('tumors', 'Disease', 'MESH:D009369', (62, 68)) ('cycle-mutant', 'Var', (49, 61)) ('glioma', 'Phenotype', 'HP:0009733', (162, 168)) ('GIST', 'Disease', (119, 123)) ('GIST', 'Phenotype', 'HP:0100723', (119, 123)) ('paraganglioma', 'Disease', (125, 138)) 77022 23550148 SDH mutation versus kinase pathway mutation status segregated perfectly with the 2 methylation subclasses ( Fig. ('kinase pathway', 'Pathway', (20, 34)) ('SDH', 'Gene', (0, 3)) ('SDH', 'Gene', '6390', (0, 3)) ('mutation', 'Var', (4, 12)) 77027 23550148 Thus, the kinase-mutant and SDH-deficient GIST methylation subclasses were respectively termed methyl-centrist and methyl-divergent. ('SDH-deficient GIST', 'Disease', (28, 46)) ('kinase-mutant', 'Var', (10, 23)) ('GIST', 'Phenotype', 'HP:0100723', (42, 46)) ('SDH-deficient GIST', 'Disease', 'MESH:D046152', (28, 46)) 77029 23550148 Interestingly, we observed a comparable number of significant CpG target hypomethylations in both subclasses: 209 and 203, respectively; in contrast, we observed 457 significant hypermethylations in the SDH mutants versus only 19 among KIT pathway mutants (Fig. ('SDH', 'Gene', (203, 206)) ('mutants', 'Var', (207, 214)) ('SDH', 'Gene', '6390', (203, 206)) ('hypermethylations', 'MPA', (178, 195)) 77030 23550148 Overall, there is a comparable and substantial hypomethylation fraction in both oncogenotypes, but significantly greater genomic hypermethylation in SDH mutants. ('SDH', 'Gene', '6390', (149, 152)) ('mutants', 'Var', (153, 160)) ('hypomethylation', 'MPA', (47, 62)) ('SDH', 'Gene', (149, 152)) ('greater', 'PosReg', (113, 120)) ('genomic hypermethylation', 'MPA', (121, 145)) 77036 23550148 Overall, the primary distinction observed by methylation microarray between SDH- and kinase pathway-mutant GIST was marked hypermethylation in the former. ('SDH', 'Gene', '6390', (76, 79)) ('hypermethylation', 'MPA', (123, 139)) ('pathway-mutant', 'Var', (92, 106)) ('kinase pathway-mutant', 'Pathway', (85, 106)) ('GIST', 'Phenotype', 'HP:0100723', (107, 111)) ('SDH', 'Gene', (76, 79)) 77037 23550148 Mechanistically, accumulation of cytosine 5-methylation in methyl-divergent tumors may arise from de novo methylation and/or failed maintenance demethylation. ('accumulation', 'PosReg', (17, 29)) ('cytosine', 'Chemical', 'MESH:D003596', (33, 41)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('methylation', 'Var', (106, 117)) ('tumors', 'Disease', (76, 82)) ('tumors', 'Disease', 'MESH:D009369', (76, 82)) ('cytosine 5-methylation', 'MPA', (33, 55)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) 77040 23550148 Sixteen of 24 methyl-divergent versus 1 of 12 methyl-centrist tumors showed loss of 5-hmC (P = 0.001). ('tumor', 'Phenotype', 'HP:0002664', (62, 67)) ('5-hmC', 'Chemical', 'MESH:C011865', (84, 89)) ('loss', 'NegReg', (76, 80)) ('tumors', 'Disease', (62, 68)) ('tumors', 'Disease', 'MESH:D009369', (62, 68)) ('tumors', 'Phenotype', 'HP:0002664', (62, 68)) ('methyl-divergent', 'Var', (14, 30)) ('5-hmC', 'MPA', (84, 89)) 77044 23550148 The genomes of KIT-mutant/methyl-centrist GIST samples featured numerous and recurrent copy number aberrations, including gains and losses of multiple chromosome arms similar to most types of cancer and other published reports of GIST (refs. ('losses', 'NegReg', (132, 138)) ('GIST', 'Phenotype', 'HP:0100723', (230, 234)) ('cancer', 'Disease', (192, 198)) ('cancer', 'Disease', 'MESH:D009369', (192, 198)) ('GIST', 'Phenotype', 'HP:0100723', (42, 46)) ('KIT-mutant/methyl-centrist', 'Var', (15, 41)) ('gains', 'PosReg', (122, 127)) ('cancer', 'Phenotype', 'HP:0002664', (192, 198)) 77045 23550148 S1) often limited to a single somatic loss on 1p or 5p overlying germline SDHB or SDHA mutation. ('SDHB', 'Gene', '6390', (74, 78)) ('SDHB', 'Gene', (74, 78)) ('SDHA', 'Gene', '6389', (82, 86)) ('mutation', 'Var', (87, 95)) ('loss', 'NegReg', (38, 42)) ('SDHA', 'Gene', (82, 86)) 77047 23550148 We next sought to further validate and test the generality of the link between SDH mutation and methyl-divergence in tumorigenesis. ('SDH', 'Gene', '6390', (79, 82)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('tumor', 'Disease', (117, 122)) ('mutation', 'Var', (83, 91)) ('SDH', 'Gene', (79, 82)) ('tumor', 'Disease', 'MESH:D009369', (117, 122)) 77049 23550148 As is the case with GIST, a subset of PGLs/Pheos occur in the setting of germline SDH mutation followed by a somatic second hit, thereby creating a genetic and functional SDH-null tumor. ('tumor', 'Disease', 'MESH:D009369', (180, 185)) ('creating', 'Reg', (137, 145)) ('SDH', 'Gene', (82, 85)) ('tumor', 'Phenotype', 'HP:0002664', (180, 185)) ('SDH', 'Gene', '6390', (82, 85)) ('SDH', 'Gene', (171, 174)) ('tumor', 'Disease', (180, 185)) ('GIST', 'Phenotype', 'HP:0100723', (20, 24)) ('mutation', 'Var', (86, 94)) ('SDH', 'Gene', '6390', (171, 174)) ('Pheos', 'Chemical', '-', (43, 48)) 77052 23550148 GoldenGate DNA methylation profiles from 29 PGLs/Pheos showed an elevated total number of target hypermethylations in the SDH -mutant versus -wild-type subgroup (177 targets versus 49 targets; Fig. ('SDH', 'Gene', (122, 125)) ('-mutant', 'Var', (126, 133)) ('SDH', 'Gene', '6390', (122, 125)) ('Pheos', 'Chemical', '-', (49, 54)) 77056 23550148 Mutation of IDH genes is coupled with heightened genomic methylation in several cancers. ('cancers', 'Disease', 'MESH:D009369', (80, 87)) ('heightened', 'PosReg', (38, 48)) ('cancer', 'Phenotype', 'HP:0002664', (80, 86)) ('cancers', 'Disease', (80, 87)) ('Mutation', 'Var', (0, 8)) ('IDH', 'Gene', (12, 15)) ('IDH', 'Gene', '3417', (12, 15)) ('genomic methylation', 'MPA', (49, 68)) ('cancers', 'Phenotype', 'HP:0002664', (80, 87)) 77057 23550148 As postulated for elevated succinate levels stemming from SDH deficiency, the result of IDH mutation is accumulation of a metabolite that is inhibitory for TET family dioxygenase-mediated DNA demethylation. ('succinate levels', 'MPA', (27, 43)) ('mutation', 'Var', (92, 100)) ('succinate', 'Chemical', 'MESH:D019802', (27, 36)) ('elevated succinate', 'Phenotype', 'HP:0020149', (18, 36)) ('accumulation', 'PosReg', (104, 116)) ('SDH deficiency', 'Disease', (58, 72)) ('IDH', 'Gene', (88, 91)) ('TET', 'Chemical', 'MESH:C010349', (156, 159)) ('IDH', 'Gene', '3417', (88, 91)) ('SDH deficiency', 'Disease', 'MESH:D007153', (58, 72)) ('elevated', 'PosReg', (18, 26)) 77064 23550148 4D); the heatmap further displays that hypermethylated targets in SDH -mutant GIST are similarly hyper-methylated in other Krebs cycle-mutant tumors. ('GIST', 'Phenotype', 'HP:0100723', (78, 82)) ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('SDH', 'Gene', '6390', (66, 69)) ('Krebs', 'Chemical', '-', (123, 128)) ('SDH', 'Gene', (66, 69)) ('-mutant', 'Var', (70, 77)) ('tumors', 'Disease', 'MESH:D009369', (142, 148)) ('tumors', 'Disease', (142, 148)) ('tumors', 'Phenotype', 'HP:0002664', (142, 148)) 77066 23550148 Taken together, these data identify epigenomic homology of tumors from 4 divergent developmental lineages that have in common a mutation of a Krebs cycle enzyme. ('tumors', 'Disease', 'MESH:D009369', (59, 65)) ('tumors', 'Disease', (59, 65)) ('Krebs', 'Chemical', '-', (142, 147)) ('tumors', 'Phenotype', 'HP:0002664', (59, 65)) ('mutation', 'Var', (128, 136)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) 77067 23550148 In this study, we have found a striking correspondence between GIST oncogenotype and epigenotype, as evidenced by marked methyl-divergence of SDH mutants. ('SDH', 'Gene', '6390', (142, 145)) ('mutants', 'Var', (146, 153)) ('methyl-divergence', 'MPA', (121, 138)) ('GIST', 'Phenotype', 'HP:0100723', (63, 67)) ('SDH', 'Gene', (142, 145)) 77068 23550148 Although impaired SDH function has previously been tied to tumorigenesis and chromatin modification, epigenomic profiling of SDH-deficient versus kinase pathway-mutant tumors has not been reported. ('tumors', 'Phenotype', 'HP:0002664', (168, 174)) ('tumor', 'Disease', (59, 64)) ('impaired', 'NegReg', (9, 17)) ('tumor', 'Disease', (168, 173)) ('SDH', 'Gene', '6390', (18, 21)) ('SDH', 'Gene', '6390', (125, 128)) ('tumors', 'Disease', (168, 174)) ('pathway-mutant', 'Var', (153, 167)) ('tumors', 'Disease', 'MESH:D009369', (168, 174)) ('SDH', 'Gene', (18, 21)) ('tumor', 'Disease', 'MESH:D009369', (59, 64)) ('tumor', 'Disease', 'MESH:D009369', (168, 173)) ('SDH', 'Gene', (125, 128)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) 77071 23550148 For example, DNA demethylation through the oxidation of 5-mC to 5-hmC depends upon the dioxygenase TET2, and is inhibited by intracellular succinate accumulation; in the setting of SDH deficiency, tumors may be expected to accumulate 5-mC or lose 5-hmC, analogous to epigenotype profiles in tumors harboring IDH mutations or TET protein downregulation, respectively. ('TET', 'Chemical', 'MESH:C010349', (99, 102)) ('5-mC', 'Chemical', 'MESH:D044503', (234, 238)) ('lose', 'NegReg', (242, 246)) ('5-hmC', 'MPA', (247, 252)) ('SDH deficiency, tumors', 'Disease', 'MESH:D009369', (181, 203)) ('tumors', 'Phenotype', 'HP:0002664', (197, 203)) ('5-hmC', 'Chemical', 'MESH:C011865', (247, 252)) ('tumors', 'Phenotype', 'HP:0002664', (291, 297)) ('tumor', 'Phenotype', 'HP:0002664', (291, 296)) ('tumor', 'Phenotype', 'HP:0002664', (197, 202)) ('TET2', 'Gene', (99, 103)) ('downregulation', 'NegReg', (337, 351)) ('5-hmC', 'Chemical', 'MESH:C011865', (64, 69)) ('TET', 'Chemical', 'MESH:C010349', (325, 328)) ('tumors', 'Disease', (197, 203)) ('IDH', 'Gene', (308, 311)) ('tumors', 'Disease', (291, 297)) ('5-mC', 'MPA', (234, 238)) ('5-mC', 'Chemical', 'MESH:D044503', (56, 60)) ('tumors', 'Disease', 'MESH:D009369', (291, 297)) ('IDH', 'Gene', '3417', (308, 311)) ('tumors', 'Disease', 'MESH:D009369', (197, 203)) ('accumulate', 'PosReg', (223, 233)) ('succinate', 'Chemical', 'MESH:D019802', (139, 148)) ('TET2', 'Gene', '54790', (99, 103)) ('mutations', 'Var', (312, 321)) 77091 23550148 After bisulfite conversion, the DNA was bound to a Zymo-Spin I-96 Binding Plate, washed with M-Wash Buffer, and desulphonated on the binding plate using M-desulphonation reagent. ('bound', 'Interaction', (40, 45)) ('bisulfite', 'Chemical', 'MESH:C042345', (6, 15)) ('bisulfite', 'Var', (6, 15)) 77098 23550148 In 450 K methylation GIST group comparisons, annotation as SDH-deficient/ mutant versus KIT kinase pathway-mutant was based firstly upon sequencing and secondly upon SDHB IHC for SDH/KIT wild-type samples. ('SDH', 'Gene', '6390', (179, 182)) ('SDHB', 'Gene', (166, 170)) ('SDH', 'Gene', '6390', (166, 169)) ('SDH', 'Gene', (179, 182)) ('GIST', 'Phenotype', 'HP:0100723', (21, 25)) ('SDH', 'Gene', (59, 62)) ('mutant', 'Var', (74, 80)) ('SDH', 'Gene', (166, 169)) ('SDHB', 'Gene', '6390', (166, 170)) ('SDH', 'Gene', '6390', (59, 62)) 77141 32550819 Additionally, screening for deletion or duplication within coding exons was performed by multiplex ligation dependent probe amplification (MLPA) analysis of VHL, SDHB, SDHC, SDHD and SDHAF2 genes but no pathogenic mutation was detected. ('SDHB', 'Gene', (162, 166)) ('SDHC', 'Gene', (168, 172)) ('VHL', 'Gene', (157, 160)) ('SDHAF2', 'Gene', '54949', (183, 189)) ('SDHC', 'Gene', '6391', (168, 172)) ('SDHAF2', 'Gene', (183, 189)) ('VHL', 'Gene', '7428', (157, 160)) ('SDHD', 'Gene', (174, 178)) ('SDHD', 'Gene', '6392', (174, 178)) ('deletion', 'Var', (28, 36)) ('SDHB', 'Gene', '6390', (162, 166)) ('duplication', 'Var', (40, 51)) 77180 32550819 Some pheochromocytomas have high malignant potential, particularly those with germline mutations in the SDHB gene so genetic testing should be performed in all patients with histologically confirmed pheochromocytoma to assist with prognosis and management. ('patients', 'Species', '9606', (160, 168)) ('pheochromocytoma', 'Disease', (5, 21)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (199, 215)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (5, 21)) ('pheochromocytoma', 'Disease', (199, 215)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (5, 22)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (199, 215)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (5, 21)) ('SDHB', 'Gene', '6390', (104, 108)) ('pheochromocytomas', 'Disease', (5, 22)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (5, 22)) ('mutations', 'Var', (87, 96)) ('SDHB', 'Gene', (104, 108)) 77256 32384867 Between 0.2 and 0.6% of hypertension in patients is caused by PPGL. ('hypertension', 'Disease', 'MESH:D006973', (24, 36)) ('patients', 'Species', '9606', (40, 48)) ('hypertension', 'Phenotype', 'HP:0000822', (24, 36)) ('PGL', 'Phenotype', 'HP:0002668', (63, 66)) ('hypertension', 'Disease', (24, 36)) ('PPGL', 'Chemical', '-', (62, 66)) ('caused by', 'Reg', (52, 61)) ('PPGL', 'Var', (62, 66)) 77320 31739997 Natural killer (NK) cells, another type of innate immune cells, are able to recognize tumors based on their aberrant or reduced major histocompatibility complex class I (MHC I). ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('aberrant', 'Var', (108, 116)) ('tumors', 'Disease', 'MESH:D009369', (86, 92)) ('tumors', 'Phenotype', 'HP:0002664', (86, 92)) ('tumors', 'Disease', (86, 92)) ('reduced', 'NegReg', (120, 127)) 77391 31739997 Anti-CD40 binds to CD40 receptor which are present on DCs and other myeloid cells. ('CD40 receptor', 'Protein', (19, 32)) ('DC', 'Gene', '13179', (54, 56)) ('Anti-CD40', 'Var', (0, 9)) ('binds', 'Interaction', (10, 15)) 77392 31739997 Specifically, the ligation of CD40 with CD40 receptor on DCs leads to the upregulation of MHC molecules, CD80/CD86 costimulatory molecules, and the production of IL-12. ('CD40', 'Gene', (30, 34)) ('DC', 'Gene', '13179', (57, 59)) ('CD40 receptor', 'Protein', (40, 53)) ('MHC molecules', 'Protein', (90, 103)) ('CD80', 'Gene', '12519', (105, 109)) ('upregulation', 'PosReg', (74, 86)) ('CD86', 'Gene', (110, 114)) ('CD86', 'Gene', '12524', (110, 114)) ('production', 'MPA', (148, 158)) ('ligation', 'Var', (18, 26)) ('CD80', 'Gene', (105, 109)) 77394 31739997 The enhancement of the therapeutic mixture with anti-CD40 resulted in 80% complete elimination of pancreatic adenocarcinoma tumors with resistance against tumor re-challenging after 120 days. ('tumor', 'Disease', 'MESH:D009369', (155, 160)) ('enhancement', 'PosReg', (4, 15)) ('tumor', 'Disease', 'MESH:D009369', (124, 129)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('elimination', 'NegReg', (83, 94)) ('pancreatic adenocarcinoma tumors', 'Disease', (98, 130)) ('tumor', 'Phenotype', 'HP:0002664', (155, 160)) ('carcinoma', 'Phenotype', 'HP:0030731', (114, 123)) ('pancreatic adenocarcinoma', 'Phenotype', 'HP:0006725', (98, 123)) ('tumor', 'Disease', (124, 129)) ('tumor', 'Disease', (155, 160)) ('tumors', 'Phenotype', 'HP:0002664', (124, 130)) ('anti-CD40', 'Var', (48, 57)) ('pancreatic adenocarcinoma tumors', 'Disease', 'MESH:D010190', (98, 130)) 77395 31739997 In the pheochromocytoma mouse model, anti-CD40 enhancement resulted in 62.5% complete elimination of subcutaneous tumors with complete resistance against tumor re-challenging. ('mouse', 'Species', '10090', (24, 29)) ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('subcutaneous tumors', 'Phenotype', 'HP:0001482', (101, 120)) ('anti-CD40', 'Var', (37, 46)) ('elimination', 'NegReg', (86, 97)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (7, 23)) ('tumor', 'Phenotype', 'HP:0002664', (154, 159)) ('subcutaneous', 'Disease', (101, 113)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('tumor', 'Disease', (114, 119)) ('tumor', 'Disease', 'MESH:D009369', (154, 159)) ('pheochromocytoma', 'Disease', (7, 23)) ('tumors', 'Disease', (114, 120)) ('tumors', 'Disease', 'MESH:D009369', (114, 120)) ('enhancement', 'PosReg', (47, 58)) ('tumors', 'Phenotype', 'HP:0002664', (114, 120)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (7, 23)) ('tumor', 'Disease', (154, 159)) 77400 31739997 Moreover, the synergy of anti-CD40 with R-848 and poly(I:C) that results in extensive expansion of APCs and CD8+ memory cells is another example of the advantage of anti-CD40 compared to checkpoint inhibitors. ('APCs', 'Disease', 'MESH:C566056', (99, 103)) ('poly(I:C)', 'Chemical', 'MESH:D011070', (50, 59)) ('R-848', 'Chemical', 'MESH:C402365', (40, 45)) ('anti-CD40', 'Var', (165, 174)) ('CD8', 'Gene', (108, 111)) ('APCs', 'Disease', (99, 103)) ('anti-CD40', 'Var', (25, 34)) ('CD8', 'Gene', '925', (108, 111)) ('poly', 'Var', (50, 54)) ('expansion', 'PosReg', (86, 95)) 77403 31739997 On the other hand, the combination of anti-CD40 with either chemotherapy (carboplatin, paclitaxel, gemcitabine) or immunotherapy (CTLA-4, PD-1, PD-L1 antibodies) has shown more promising results compared to anti-CD40 antibodies or chemotherapy alone. ('CTLA-4', 'Gene', '12477', (130, 136)) ('paclitaxel', 'Chemical', 'MESH:D017239', (87, 97)) ('anti-CD40', 'Var', (38, 47)) ('CTLA-4', 'Gene', (130, 136)) ('gemcitabine', 'Chemical', 'MESH:C056507', (99, 110)) ('carboplatin', 'Chemical', 'MESH:D016190', (74, 85)) 77438 31360497 Most PPGLs secrete catecholamines and represent high circulating catecholamine levels, leading to overstimulation of adrenergic receptors and high mortality due to hypertension, stroke, and cardiomyopathy-related congestive heart disease.1 Although most PPGLs are sporadic, more than one-third of PPGL cases have been considered to have genetic backgrounds, such as von Hippel-Lindau disease, neurofibromatosis type 1, multiple endocrine neoplasia type 2, mutations in succinate dehydrogenase complex subunit genes, subunit cofactor, transmembrane protein 127, and myc-associated factor X.1, 2 As one-fourth of PPGLs have been reported to be malignant,3 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET) examination has been recommended for detecting metastatic lesions, to ensure precise interventions.4 FDG-PET could be used to identify multiple affected lesions in these cases.1, 2 High FDG accumulation has been reported in activated brown or beige-colored white adipose tissue caused by catecholamines5, 6, 7 or cold exposure.8 Successful resection of PPGLs, resulting in amelioration of hyper-catecholamine levels, leads to disappearance of high FDG accumulations in adipose tissues. ('stroke', 'Phenotype', 'HP:0001297', (178, 184)) ('hypertension', 'Disease', 'MESH:D006973', (164, 176)) ('amelioration', 'PosReg', (1094, 1106)) ('FDG', 'Chemical', 'MESH:D019788', (907, 910)) ('hyper-catecholamine levels', 'MPA', (1110, 1136)) ('hypertension', 'Disease', (164, 176)) ('stroke', 'Disease', 'MESH:D020521', (178, 184)) ('disappearance', 'NegReg', (1147, 1160)) ('congestive heart', 'Phenotype', 'HP:0001635', (213, 229)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (367, 392)) ('neoplasia', 'Phenotype', 'HP:0002664', (439, 448)) ('catecholamines', 'Chemical', 'MESH:D002395', (19, 33)) ('high FDG accumulations', 'MPA', (1164, 1186)) ('catecholamine', 'Chemical', 'MESH:D002395', (1116, 1129)) ('stroke', 'Disease', (178, 184)) ('neurofibromatosis type 1, multiple endocrine neoplasia type 2', 'Gene', '4763', (394, 455)) ('congestive heart disease', 'Disease', 'MESH:D006333', (213, 237)) ('von Hippel-Lindau disease', 'Disease', (367, 392)) ('cardiomyopathy', 'Disease', (190, 204)) ('hyper-catecholamine levels', 'Phenotype', 'HP:0003334', (1110, 1136)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (429, 448)) ('hypertension', 'Phenotype', 'HP:0000822', (164, 176)) ('resection', 'Var', (1061, 1070)) ('catecholamine', 'Chemical', 'MESH:D002395', (19, 32)) ('catecholamines5', 'Chemical', '-', (1009, 1024)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (394, 411)) ('FDG', 'Chemical', 'MESH:D019788', (680, 683)) ('catecholamine', 'Chemical', 'MESH:D002395', (65, 78)) ('high circulating catecholamine levels', 'Phenotype', 'HP:0003334', (48, 85)) ('catecholamines', 'Chemical', 'MESH:D002395', (1009, 1023)) ('FDG', 'Chemical', 'MESH:D019788', (821, 824)) ('congestive heart disease', 'Disease', (213, 237)) ('FDG', 'Chemical', 'MESH:D019788', (1169, 1172)) ('catecholamine', 'Chemical', 'MESH:D002395', (1009, 1022)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (190, 204)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (190, 204)) ('PPGLs', 'Gene', (1074, 1079)) 77478 31301733 NF1 is caused by a mutation in the tumor suppressor gene NF1 which leads to a decreased production of the protein neurofibromin and subsequently to the risk of developing benign or malignant tumors with a variety of clinical symptoms. ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('tumors', 'Phenotype', 'HP:0002664', (191, 197)) ('mutation', 'Var', (19, 27)) ('tumor', 'Disease', 'MESH:D009369', (191, 196)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('NF1', 'Gene', (57, 60)) ('tumor', 'Disease', (35, 40)) ('malignant tumors', 'Disease', (181, 197)) ('malignant tumors', 'Disease', 'MESH:D009369', (181, 197)) ('neurofibromin', 'Gene', '4763', (114, 127)) ('NF1', 'Gene', '4763', (57, 60)) ('tumor', 'Phenotype', 'HP:0002664', (191, 196)) ('tumor', 'Disease', (191, 196)) ('neurofibromin', 'Gene', (114, 127)) ('NF1', 'Gene', (0, 3)) ('decreased', 'NegReg', (78, 87)) ('NF1', 'Gene', '4763', (0, 3)) 77493 31301733 We completed a genetic examination which revealed a mutation in the NF1 gene (c.1570G-Tp.Glu524*). ('NF1', 'Gene', '4763', (68, 71)) ('p.Glu524*', 'Var', (87, 96)) ('NF1', 'Gene', (68, 71)) ('p.Glu524*', 'SUBSTITUTION', 'None', (87, 96)) 77537 29095319 In August of 2015, a 26-year-old G1P0 Chinese woman at 34-weeks gestation with no notable past medical history presented to a hospital in Edinburgh, Scotland with a 3-hour history of sudden onset numbness and decreased muscle strength of bilateral lower limbs, as well as urinary incontinence. ('urinary incontinence', 'Phenotype', 'HP:0000020', (272, 292)) ('urinary incontinence', 'Disease', 'MESH:D014549', (272, 292)) ('G1P0', 'Var', (33, 37)) ('lower limbs', 'Phenotype', 'HP:0006385', (248, 259)) ('sudden onset numbness', 'Disease', 'MESH:D006987', (183, 204)) ('sudden onset numbness', 'Disease', (183, 204)) ('muscle strength', 'CPA', (219, 234)) ('urinary incontinence', 'Disease', (272, 292)) ('woman', 'Species', '9606', (46, 51)) ('decreased', 'NegReg', (209, 218)) 77552 29095319 The syndromic diagnosis was suggestive of T10 myelopathy (paraparesis, urinary incontinence, T10 level hypoesthesia) and radiculopathy (back pain, decreased reflexes) respectively. ('decreased reflexes', 'Phenotype', 'HP:0001265', (147, 165)) ('decreased', 'NegReg', (147, 156)) ('paraparesis', 'Disease', 'MESH:D020335', (58, 69)) ('myelopathy', 'Disease', 'MESH:D013118', (46, 56)) ('urinary incontinence', 'Phenotype', 'HP:0000020', (71, 91)) ('myelopathy', 'Disease', (46, 56)) ('paraparesis', 'Disease', (58, 69)) ('urinary incontinence', 'Disease', 'MESH:D014549', (71, 91)) ('hypoesthesia', 'Disease', 'MESH:D006987', (103, 115)) ('back pain', 'Phenotype', 'HP:0003418', (136, 145)) ('back pain', 'Disease', 'MESH:D001416', (136, 145)) ('T10', 'Var', (93, 96)) ('hypoesthesia', 'Disease', (103, 115)) ('pain', 'Phenotype', 'HP:0012531', (141, 145)) ('hypoesthesia', 'Phenotype', 'HP:0003474', (103, 115)) ('radiculopathy', 'Disease', 'MESH:D011843', (121, 134)) ('urinary incontinence', 'Disease', (71, 91)) ('paraparesis', 'Phenotype', 'HP:0002385', (58, 69)) ('back pain', 'Disease', (136, 145)) ('radiculopathy', 'Disease', (121, 134)) ('reflexes', 'MPA', (157, 165)) ('myelopathy', 'Phenotype', 'HP:0002196', (46, 56)) 77640 28327598 Cluster 1 contains tumours with mutations in VHL, EPAS1 and SDHx/FH/MDH2, and is characterized by a pseudohypoxic gene expression signature caused by the stabilization of EPAS-1 which drives angiogenesis and tumour development. ('EPAS1', 'Gene', '2034', (50, 55)) ('EPAS-1', 'Gene', '2034', (171, 177)) ('tumours', 'Disease', (19, 26)) ('VHL', 'Gene', (45, 48)) ('EPAS-1', 'Gene', (171, 177)) ('angiogenesis', 'CPA', (191, 203)) ('tumours', 'Phenotype', 'HP:0002664', (19, 26)) ('MDH2', 'Gene', (68, 72)) ('SDHx', 'Chemical', '-', (60, 64)) ('tumours', 'Disease', 'MESH:D009369', (19, 26)) ('mutations', 'Var', (32, 41)) ('tumour', 'Phenotype', 'HP:0002664', (208, 214)) ('tumour', 'Disease', 'MESH:D009369', (208, 214)) ('tumour', 'Phenotype', 'HP:0002664', (19, 25)) ('VHL', 'Gene', '7428', (45, 48)) ('tumour', 'Disease', 'MESH:D009369', (19, 25)) ('tumour', 'Disease', (208, 214)) ('EPAS1', 'Gene', (50, 55)) ('tumour', 'Disease', (19, 25)) ('FH', 'Disease', 'MESH:D006938', (65, 67)) ('MDH2', 'Gene', '4191', (68, 72)) ('drives', 'PosReg', (184, 190)) 77641 28327598 Cluster 2 contains tumours with mutations in RET, TMEM127, MAX, NF1 and HRAS and is characterized by aberrant activation of kinase signalling pathways. ('tumours', 'Phenotype', 'HP:0002664', (19, 26)) ('RET', 'Gene', '5979', (45, 48)) ('activation', 'PosReg', (110, 120)) ('MAX', 'Gene', (59, 62)) ('HRAS', 'Gene', '3265', (72, 76)) ('tumours', 'Disease', 'MESH:D009369', (19, 26)) ('tumours', 'Disease', (19, 26)) ('HRAS', 'Gene', (72, 76)) ('RET', 'Gene', (45, 48)) ('TMEM127', 'Gene', (50, 57)) ('mutations', 'Var', (32, 41)) ('NF1', 'Gene', (64, 67)) ('TMEM127', 'Gene', '55654', (50, 57)) ('NF1', 'Gene', '4763', (64, 67)) ('kinase signalling pathways', 'Pathway', (124, 150)) ('tumour', 'Phenotype', 'HP:0002664', (19, 25)) 77644 28327598 There are no reliable predictors of metastatic recurrence, but extra-adrenal location and SDHB mutations have been associated with increased risk of metastasis and poor outcome. ('metastasis', 'CPA', (149, 159)) ('SDHB', 'Gene', '6390', (90, 94)) ('SDHB', 'Gene', (90, 94)) ('associated', 'Reg', (115, 125)) ('mutations', 'Var', (95, 104)) 77645 28327598 However, adrenal tumours without SDHx mutations can also give rise to metastatic disease. ('SDHx', 'Chemical', '-', (33, 37)) ('tumour', 'Phenotype', 'HP:0002664', (17, 23)) ('tumours', 'Phenotype', 'HP:0002664', (17, 24)) ('give rise', 'Reg', (57, 66)) ('metastatic disease', 'CPA', (70, 88)) ('mutations', 'Var', (38, 47)) ('adrenal tumours', 'Disease', 'MESH:D000310', (9, 24)) ('adrenal tumours', 'Disease', (9, 24)) ('SDHx', 'Gene', (33, 37)) 77647 28327598 Aberrant DNA methylation has been identified as an important feature of human cancers. ('Aberrant', 'Var', (0, 8)) ('human', 'Species', '9606', (72, 77)) ('cancers', 'Disease', 'MESH:D009369', (78, 85)) ('DNA', 'Protein', (9, 12)) ('cancers', 'Phenotype', 'HP:0002664', (78, 85)) ('cancers', 'Disease', (78, 85)) ('cancer', 'Phenotype', 'HP:0002664', (78, 84)) 77650 28327598 Moreover, DNA-methylation of specific genes may be used as biomarkers for response to chemotherapy, such as methylation of MGMT and response to alkylating agents. ('MGMT', 'Gene', '4255', (123, 127)) ('MGMT', 'Gene', (123, 127)) ('methylation', 'Var', (108, 119)) 77655 28327598 Cluster A (n = 28) contained the majority of tumours with mutations in the RET, NF1 and HRAS genes and most of those without known mutations, whereas cluster B (n = 11) contained the majority of the tumours with mutations in the VHL gene. ('mutations', 'Var', (58, 67)) ('RET', 'Gene', (75, 78)) ('tumour', 'Phenotype', 'HP:0002664', (199, 205)) ('VHL', 'Gene', (229, 232)) ('NF1', 'Gene', (80, 83)) ('tumours', 'Phenotype', 'HP:0002664', (199, 206)) ('tumour', 'Phenotype', 'HP:0002664', (45, 51)) ('VHL', 'Gene', '7428', (229, 232)) ('NF1', 'Gene', '4763', (80, 83)) ('tumours', 'Phenotype', 'HP:0002664', (45, 52)) ('HRAS', 'Gene', '3265', (88, 92)) ('tumours', 'Disease', 'MESH:D009369', (45, 52)) ('RET', 'Gene', '5979', (75, 78)) ('tumours', 'Disease', 'MESH:D009369', (199, 206)) ('tumours', 'Disease', (199, 206)) ('HRAS', 'Gene', (88, 92)) ('tumours', 'Disease', (45, 52)) 77665 28327598 In total 355 of these probes were found differentially methylated in both benign and malignant tumours compared to normal adrenal medulla (Fig. ('tumours', 'Phenotype', 'HP:0002664', (95, 102)) ('methylated', 'Var', (55, 65)) ('malignant tumours', 'Disease', 'MESH:D009369', (85, 102)) ('malignant tumours', 'Disease', (85, 102)) ('tumour', 'Phenotype', 'HP:0002664', (95, 101)) 77670 28327598 A total of 275 probes were differentially methylated between benign and malignant tumours in our cohort (Supplementary Table 8). ('tumour', 'Phenotype', 'HP:0002664', (82, 88)) ('tumours', 'Phenotype', 'HP:0002664', (82, 89)) ('methylated', 'Var', (42, 52)) ('differentially', 'Reg', (27, 41)) ('malignant tumours', 'Disease', 'MESH:D009369', (72, 89)) ('malignant tumours', 'Disease', (72, 89)) 77673 28327598 A total of 119 probes were differentially methylated between benign and malignant tumours within Cluster A (Supplementary Table 10). ('tumour', 'Phenotype', 'HP:0002664', (82, 88)) ('tumours', 'Phenotype', 'HP:0002664', (82, 89)) ('methylated', 'Var', (42, 52)) ('malignant tumours within Cluster A', 'Disease', (72, 106)) ('malignant tumours within Cluster A', 'Disease', 'MESH:D001929', (72, 106)) ('differentially', 'Reg', (27, 41)) 77674 28327598 In the cases were sufficient samples were available tumours sharing a mutated gene were compared with normal medulla (Supplementary Tables 11-14). ('tumours', 'Disease', (52, 59)) ('tumour', 'Phenotype', 'HP:0002664', (52, 58)) ('mutated gene', 'Var', (70, 82)) ('tumours', 'Phenotype', 'HP:0002664', (52, 59)) ('tumours', 'Disease', 'MESH:D009369', (52, 59)) 77689 28327598 There was no significant difference in PNMT expression between the two clusters in our cohort; however, ANOVA revealed that the expression differed significantly between tumours with different mutation (p = 0.0024, Supplementary Figures 8 and 9). ('tumours', 'Disease', 'MESH:D009369', (170, 177)) ('tumours', 'Disease', (170, 177)) ('PNMT', 'Gene', (39, 43)) ('PNMT', 'Gene', '5409', (39, 43)) ('expression', 'MPA', (128, 138)) ('tumour', 'Phenotype', 'HP:0002664', (170, 176)) ('mutation', 'Var', (193, 201)) ('tumours', 'Phenotype', 'HP:0002664', (170, 177)) ('differed', 'Reg', (139, 147)) 77691 28327598 The probes associated with RDBP (cg04710641 and cg06351503) had Deltabeta- values of 0.007 and -0.098 between benign and malignant tumours, respectively. ('cg06351503', 'Var', (48, 58)) ('tumours', 'Phenotype', 'HP:0002664', (131, 138)) ('RDBP', 'Gene', '7936', (27, 31)) ('cg04710641', 'Chemical', '-', (33, 43)) ('tumour', 'Phenotype', 'HP:0002664', (131, 137)) ('malignant tumours', 'Disease', 'MESH:D009369', (121, 138)) ('malignant tumours', 'Disease', (121, 138)) ('cg04710641', 'Var', (33, 43)) ('RDBP', 'Gene', (27, 31)) 77694 28327598 The best performance was by cg00626119 (NTRK1), which exhibited a Deltabeta of -0.15 in our cohort. ('NTRK1', 'Gene', '4914', (40, 45)) ('cg00626119', 'Var', (28, 38)) ('NTRK1', 'Gene', (40, 45)) 77696 28327598 Namely, we found that tumours cluster according to mutated driver gene, and that tumours with mutations activating kinase pathways have global hypomethylation. ('tumours cluster', 'Disease', (22, 37)) ('kinase pathways', 'Pathway', (115, 130)) ('tumours', 'Phenotype', 'HP:0002664', (81, 88)) ('tumours', 'Phenotype', 'HP:0002664', (22, 29)) ('tumours', 'Disease', 'MESH:D009369', (22, 29)) ('mutations', 'Var', (94, 103)) ('tumours cluster', 'Disease', 'MESH:D003027', (22, 37)) ('tumours', 'Disease', 'MESH:D009369', (81, 88)) ('tumours', 'Disease', (22, 29)) ('tumours', 'Disease', (81, 88)) ('global hypomethylation', 'MPA', (136, 158)) ('activating', 'PosReg', (104, 114)) ('tumour', 'Phenotype', 'HP:0002664', (22, 28)) ('tumour', 'Phenotype', 'HP:0002664', (81, 87)) 77697 28327598 M1 contains tumours with SDHx mutations and hypermethylation, M2 VHL-mutated tumours, and M3 tumours with NF1 and RET mutations and hypomethylation. ('VHL', 'Gene', '7428', (65, 68)) ('tumours', 'Disease', 'MESH:D009369', (12, 19)) ('hypomethylation', 'Var', (132, 147)) ('tumour', 'Phenotype', 'HP:0002664', (93, 99)) ('RET', 'Gene', (114, 117)) ('tumour', 'Phenotype', 'HP:0002664', (12, 18)) ('tumour', 'Phenotype', 'HP:0002664', (77, 83)) ('SDHx', 'Gene', (25, 29)) ('tumours', 'Disease', (77, 84)) ('SDHx', 'Chemical', '-', (25, 29)) ('mutations', 'Var', (30, 39)) ('hypermethylation', 'Var', (44, 60)) ('NF1', 'Gene', '4763', (106, 109)) ('VHL', 'Gene', (65, 68)) ('tumours', 'Phenotype', 'HP:0002664', (77, 84)) ('tumours', 'Disease', 'MESH:D009369', (77, 84)) ('tumours', 'Disease', (93, 100)) ('M3 tumours', 'Disease', 'MESH:D015473', (90, 100)) ('RET', 'Gene', '5979', (114, 117)) ('tumours', 'Disease', (12, 19)) ('M3 tumours', 'Disease', (90, 100)) ('NF1', 'Gene', (106, 109)) ('tumours', 'Phenotype', 'HP:0002664', (12, 19)) ('tumours', 'Phenotype', 'HP:0002664', (93, 100)) ('tumours', 'Disease', 'MESH:D009369', (93, 100)) 77700 28327598 This represents a possible mechanism through which aberrant DNA methylation might affect diverse disease progression course in pheochromocytoma in addition to altering gene expression. ('altering', 'Reg', (159, 167)) ('aberrant', 'Var', (51, 59)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (127, 143)) ('gene expression', 'MPA', (168, 183)) ('pheochromocytoma', 'Disease', (127, 143)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (127, 143)) ('DNA', 'Protein', (60, 63)) ('affect', 'Reg', (82, 88)) 77701 28327598 This represents a possible mechanism through which aberrant DNA methylation can affect disease progression in pheochromocytoma in addition to altering gene expression. ('affect', 'Reg', (80, 86)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (110, 126)) ('disease progression', 'CPA', (87, 106)) ('aberrant', 'Var', (51, 59)) ('gene expression', 'MPA', (151, 166)) ('altering', 'Reg', (142, 150)) ('DNA', 'Protein', (60, 63)) ('pheochromocytoma', 'Disease', (110, 126)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (110, 126)) 77702 28327598 Indeed, malignant tumours were found to harbour a greater number of copy number aberrations than benign tumours, even within Cluster A, supporting the idea that hypomethylation can contribute to malignant progression. ('hypomethylation', 'Var', (161, 176)) ('malignant tumours', 'Disease', 'MESH:D009369', (8, 25)) ('contribute', 'Reg', (181, 191)) ('malignant tumours', 'Disease', (8, 25)) ('copy number aberrations than benign tumours', 'Disease', 'MESH:D002828', (68, 111)) ('tumour', 'Phenotype', 'HP:0002664', (18, 24)) ('tumour', 'Phenotype', 'HP:0002664', (104, 110)) ('tumours', 'Phenotype', 'HP:0002664', (104, 111)) ('malignant progression', 'CPA', (195, 216)) ('copy number aberrations than benign tumours', 'Disease', (68, 111)) ('tumours', 'Phenotype', 'HP:0002664', (18, 25)) 77705 28327598 The extent and impact of epigenetic heterogeneity in pheochromocytoma is an interesting topic for future studies. ('pheochromocytoma', 'Disease', (53, 69)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (53, 69)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (53, 69)) ('epigenetic heterogeneity', 'Var', (25, 49)) 77711 28327598 This could explain why hypermethylation of RDBP is found to be associated with malignancy in other cohorts, but not in our cohort, where the probes for RDBP performed marginally better than chance as predictors of metastatic disease. ('malignancy', 'Disease', 'MESH:D009369', (79, 89)) ('RDBP', 'Gene', '7936', (152, 156)) ('malignancy', 'Disease', (79, 89)) ('RDBP', 'Gene', '7936', (43, 47)) ('RDBP', 'Gene', (152, 156)) ('associated', 'Reg', (63, 73)) ('RDBP', 'Gene', (43, 47)) ('hypermethylation', 'Var', (23, 39)) ('metastatic disease', 'CPA', (214, 232)) 77718 28327598 In conclusion, previously discovered molecular subgroups of pheochromocytoma defined by DNA methylation were validated while proposed markers of malignancy could not be validated in our cohort. ('methylation', 'Var', (92, 103)) ('malignancy', 'Disease', 'MESH:D009369', (145, 155)) ('pheochromocytoma', 'Disease', (60, 76)) ('malignancy', 'Disease', (145, 155)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (60, 76)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (60, 76)) 77722 28327598 The tumours had been previously studied for mutations in known driver genes and using high-density SNP array (data available for 35 of the tumours). ('tumours', 'Phenotype', 'HP:0002664', (139, 146)) ('tumours', 'Disease', 'MESH:D009369', (139, 146)) ('tumour', 'Phenotype', 'HP:0002664', (4, 10)) ('tumours', 'Disease', (139, 146)) ('tumour', 'Phenotype', 'HP:0002664', (139, 145)) ('tumours', 'Phenotype', 'HP:0002664', (4, 11)) ('mutations', 'Var', (44, 53)) ('tumours', 'Disease', 'MESH:D009369', (4, 11)) ('tumours', 'Disease', (4, 11)) 77814 27194549 In that study, tumor size, operative approach, and selective alphablockade were associated with intraoperative hemodynamic instability during pheochromocytoma resection. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (142, 158)) ('intraoperative', 'MPA', (96, 110)) ('tumor', 'Disease', 'MESH:D009369', (15, 20)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (142, 158)) ('alphablockade', 'Chemical', '-', (61, 74)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('associated with', 'Reg', (80, 95)) ('tumor', 'Disease', (15, 20)) ('pheochromocytoma', 'Disease', (142, 158)) ('selective', 'Var', (51, 60)) 77847 26793581 The metaiodobenzylguanidine is highly specific for pheochromocytoma and is thus useful to distinguish between functional and nonfunctional tumors, but it is less sensitive compared to MRI to detect paragangliomas. ('paragangliomas', 'Disease', 'MESH:D010235', (198, 212)) ('nonfunctional tumors', 'Disease', 'MESH:C565486', (125, 145)) ('metaiodobenzylguanidine', 'Chemical', 'MESH:D019797', (4, 27)) ('tumors', 'Phenotype', 'HP:0002664', (139, 145)) ('paraganglioma', 'Phenotype', 'HP:0002668', (198, 211)) ('paragangliomas', 'Disease', (198, 212)) ('pheochromocytoma', 'Disease', (51, 67)) ('paragangliomas', 'Phenotype', 'HP:0002668', (198, 212)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (51, 67)) ('nonfunctional tumors', 'Disease', (125, 145)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (51, 67)) ('metaiodobenzylguanidine', 'Var', (4, 27)) 77910 23626751 p.Arg82Leu von Hippel-Lindau (VHL) Gene Mutation among Three Members of a Family with Familial Bilateral Pheochromocytoma in India: Molecular Analysis and In Silico Characterization Various missense mutations in the VHL gene have been reported among patients with familial bilateral pheochromocytoma. ('p.Arg82Leu', 'Mutation', 'rs794726890', (0, 10)) ('Familial Bilateral Pheochromocytoma', 'Disease', 'MESH:C531777', (86, 121)) ('familial bilateral pheochromocytoma', 'Disease', 'MESH:C531777', (264, 299)) ('VHL', 'Gene', (30, 33)) ('patients', 'Species', '9606', (250, 258)) ('p.Arg82Leu', 'Var', (0, 10)) ('Familial Bilateral Pheochromocytoma', 'Disease', (86, 121)) ('VHL', 'Gene', '7428', (30, 33)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (11, 28)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (105, 121)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (283, 299)) ('VHL', 'Gene', (216, 219)) ('missense mutations', 'Var', (190, 208)) ('familial bilateral pheochromocytoma', 'Disease', (264, 299)) ('VHL', 'Gene', '7428', (216, 219)) ('reported', 'Reg', (235, 243)) ('von Hippel-Lindau', 'Disease', (11, 28)) 77911 23626751 However, the p.Arg82Leu mutation in the VHL gene described here among patients with familial bilateral pheochromocytoma, has never been reported previously in a germline configuration. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (103, 119)) ('patients', 'Species', '9606', (70, 78)) ('familial bilateral pheochromocytoma', 'Disease', (84, 119)) ('p.Arg82Leu', 'Var', (13, 23)) ('VHL', 'Gene', (40, 43)) ('VHL', 'Gene', '7428', (40, 43)) ('familial bilateral pheochromocytoma', 'Disease', 'MESH:C531777', (84, 119)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (13, 23)) 77912 23626751 Interestingly, long-term follow-up of these patients indicated that the mutation might have had little impact on the normal function of the VHL gene, since all of them have remained asymptomatic. ('VHL', 'Gene', '7428', (140, 143)) ('VHL', 'Gene', (140, 143)) ('patients', 'Species', '9606', (44, 52)) ('mutation', 'Var', (72, 80)) 77916 23626751 They might arise sporadically or in association with any one of the cancer syndromes that includes von Hippel-Lindau (VHL) disease, neurofibromatosis type 1 (NF 1), multiple endocrine neoplasia type 2 (MEN 2) and mutations in any one of the mitochondrial succinate dehydrogenase complex (SDHx) genes. ('von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (99, 130)) ('NF 1', 'Gene', (158, 162)) ('cancer', 'Phenotype', 'HP:0002664', (68, 74)) ('neurofibromatosis type 1', 'Gene', (132, 156)) ('multiple endocrine neoplasia type 2', 'Disease', (165, 200)) ('SDHx', 'Gene', (288, 292)) ('hydrogen', 'Chemical', 'MESH:D006859', (267, 275)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (132, 149)) ('neoplasia', 'Phenotype', 'HP:0002664', (184, 193)) ('cancer', 'Disease', 'MESH:D009369', (68, 74)) ('arise', 'Reg', (11, 16)) ('mutations', 'Var', (213, 222)) ('association', 'Reg', (36, 47)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (165, 200)) ('neurofibromatosis type 1', 'Gene', '4763', (132, 156)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (174, 193)) ('NF 1', 'Gene', '4763', (158, 162)) ('MEN', 'Species', '9606', (202, 205)) ('cancer', 'Disease', (68, 74)) 77917 23626751 More recent data indicates that mutations in SDHAF2 and TMEM127 may also be associated with PCCs. ('TMEM127', 'Gene', (56, 63)) ('SDHAF2', 'Gene', '54949', (45, 51)) ('SDHAF2', 'Gene', (45, 51)) ('TMEM127', 'Gene', '55654', (56, 63)) ('PCCs', 'Disease', (92, 96)) ('associated', 'Reg', (76, 86)) ('PCC', 'Phenotype', 'HP:0002666', (92, 95)) ('mutations', 'Var', (32, 41)) 77922 23626751 Also the pattern of mutations in these subgroups appears to be distinct where type 1 VHL disease is known to be associated with deletions and truncating mutations while type 2 disease is associated with missense point mutations, which in turn is believed to reflect the degree of functional change it can cause to the VHL gene product. ('type 1 VHL disease', 'Disease', (78, 96)) ('truncating', 'MPA', (142, 152)) ('VHL', 'Gene', (85, 88)) ('type 1 VHL disease', 'Disease', 'MESH:D006623', (78, 96)) ('VHL', 'Gene', (318, 321)) ('VHL', 'Gene', '7428', (318, 321)) ('VHL', 'Gene', '7428', (85, 88)) ('associated', 'Reg', (112, 122)) ('mutations', 'Var', (20, 29)) ('deletions', 'Var', (128, 137)) ('missense point mutations', 'Var', (203, 227)) 77946 23626751 The machine learning methods utilize random forests (RF) (MutPred) or support vector machines (SVMs) (PhD-SNP, SNPs & GO, I-mutant3) for classification, while all the other methods classify variants according to Bayesian methods (PolyPhen2), or mathematical operations (SIFT). ('SIFT', 'Disease', 'None', (270, 274)) ('classify', 'Var', (181, 189)) ('SIFT', 'Disease', (270, 274)) 77947 23626751 Position specific conservation pattern of p.Arg82Leu in VHL protein was analyzed using an empirical bayesian inference ConSurf server. ('VHL', 'Gene', (56, 59)) ('p.Arg82Leu', 'Var', (42, 52)) ('VHL', 'Gene', '7428', (56, 59)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (42, 52)) 77948 23626751 The potential impact of the mutation p.Arg82Leu was evaluated by visual inspection of environment of the altered residue in the crystal structure of the VHL protein. ('VHL', 'Gene', '7428', (153, 156)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (37, 47)) ('VHL', 'Gene', (153, 156)) ('p.Arg82Leu', 'Var', (37, 47)) 77949 23626751 The structure of the VHL protein (PDB ID 1LM8) contains two primary functional domains: the alpha-domain (155-192 aa), and the beta-domain (63-154 and 193-204 aa). ('63-154', 'Var', (140, 146)) ('VHL', 'Gene', '7428', (21, 24)) ('VHL', 'Gene', (21, 24)) ('155-192 aa', 'Var', (106, 116)) 77950 23626751 p.Arg82Leu is located in the functional beta-domain of the VHL protein. ('VHL', 'Gene', '7428', (59, 62)) ('VHL', 'Gene', (59, 62)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (0, 10)) ('p.Arg82Leu', 'Var', (0, 10)) 77956 23626751 Structural properties of the native and mutant model of VHL protein were calculated from the trajectory files with the built-in functions of GROMACS 4.5.3. ('mutant', 'Var', (40, 46)) ('VHL', 'Gene', (56, 59)) ('VHL', 'Gene', '7428', (56, 59)) 77965 23626751 Most cases affected by the p.Arg82Pro mutation interestingly have been documented to develop retinal hemangioblastomas indicating the pathogenicity of this amino acid change. ('retinal hemangioblastomas', 'Disease', 'MESH:D018325', (93, 118)) ('p.Arg82Pro', 'Mutation', 'rs794726890', (27, 37)) ('retinal hemangioblastomas', 'Phenotype', 'HP:0009711', (93, 118)) ('develop', 'PosReg', (85, 92)) ('p.Arg82Pro', 'Var', (27, 37)) ('retinal hemangioblastomas', 'Disease', (93, 118)) 77967 23626751 A similar observation on the absence of overt VHL disease has been documented in another study on VHL mutation associated PCCs. ('VHL disease', 'Disease', 'MESH:D006623', (46, 57)) ('VHL', 'Gene', (46, 49)) ('VHL', 'Gene', '7428', (46, 49)) ('mutation', 'Var', (102, 110)) ('VHL', 'Gene', (98, 101)) ('VHL disease', 'Disease', (46, 57)) ('VHL', 'Gene', '7428', (98, 101)) ('PCC', 'Phenotype', 'HP:0002666', (122, 125)) 77969 23626751 Stebbins et al provide further evidence that in type II VHL disease associated with only pheochromocytoma there is a strong bias against hydrophobic core mutations resulting in a protein that is mostly associated with local defects i.e. ('type II VHL disease', 'Disease', 'MESH:D006623', (48, 67)) ('type II VHL disease', 'Disease', (48, 67)) ('pheochromocytoma', 'Disease', (89, 105)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (89, 105)) ('hydrophobic core mutations', 'Var', (137, 163)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (89, 105)) 77970 23626751 Further, Ong et al have also noted that missense mutations that code for amino acids on the surface of the VHL protein are more likely to be associated with higher rates of PCC. ('missense mutations', 'Var', (40, 58)) ('VHL', 'Gene', '7428', (107, 110)) ('PCC', 'Phenotype', 'HP:0002666', (173, 176)) ('PCC', 'Disease', (173, 176)) ('associated', 'Reg', (141, 151)) ('VHL', 'Gene', (107, 110)) ('code', 'Reg', (64, 68)) 77971 23626751 These points taken along with the fact that all three patients in this report presented only with bilateral PCC and continue to be asymptomatic on long follow-up suggests that p.Arg82Leu mutation reported here is plausibly, a mutation that is associated predominantly and exclusively only with PCC. ('PCC', 'Phenotype', 'HP:0002666', (108, 111)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (176, 186)) ('patients', 'Species', '9606', (54, 62)) ('p.Arg82Leu mutation', 'Var', (176, 195)) ('PCC', 'Phenotype', 'HP:0002666', (294, 297)) ('PCC', 'Disease', (108, 111)) 77972 23626751 Though the VHL protein is known to play a role in fibronectin extracellular matrix assembly and the role of two other mutations viz., L188V and V84L have been investigated, in this context the absence of experimental proof makes it purely speculative to believe that p.Arg82Leu could have played a similar role in the development of PCC. ('L188V', 'Mutation', 'rs5030824', (134, 139)) ('L188V', 'Var', (134, 139)) ('PCC', 'Disease', (333, 336)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (267, 277)) ('fibronectin', 'Gene', (50, 61)) ('VHL', 'Gene', (11, 14)) ('V84L', 'Mutation', 'rs5030827', (144, 148)) ('played', 'Reg', (289, 295)) ('PCC', 'Phenotype', 'HP:0002666', (333, 336)) ('VHL', 'Gene', '7428', (11, 14)) ('V84L', 'Var', (144, 148)) ('p.Arg82Leu', 'Var', (267, 277)) ('fibronectin', 'Gene', '2335', (50, 61)) 77977 23626751 However, it is now fairly well established that the risk of developing pheochromocytoma in these families could largely depend on the type of germline mutation in the VHL gene. ('pheochromocytoma', 'Disease', (71, 87)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (71, 87)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (71, 87)) ('VHL', 'Gene', (167, 170)) ('VHL', 'Gene', '7428', (167, 170)) ('germline mutation', 'Var', (142, 159)) 77981 23626751 There is a germ line mutation (first hit) that inactivates one copy of the VHL gene in all cells. ('inactivates', 'NegReg', (47, 58)) ('VHL', 'Gene', (75, 78)) ('VHL', 'Gene', '7428', (75, 78)) ('mutation', 'Var', (21, 29)) 77982 23626751 For VHL-associated tumors to develop there must be loss of expression of the second normal allele (second hit), through either somatic mutation or deletion of the second allele, or through hypermethylation of its promoter. ('tumors', 'Disease', (19, 25)) ('hypermethylation', 'Var', (189, 205)) ('tumors', 'Disease', 'MESH:D009369', (19, 25)) ('VHL', 'Gene', '7428', (4, 7)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('deletion', 'Var', (147, 155)) ('expression', 'MPA', (59, 69)) ('VHL', 'Gene', (4, 7)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('loss', 'NegReg', (51, 55)) ('mutation', 'Var', (135, 143)) 77984 23626751 Most mutations associated with type 2 VHL syndrome are known to be missense mutations while deletions and truncation are often associated with type 1 VHL syndrome. ('VHL syndrome', 'Disease', 'MESH:D006623', (150, 162)) ('associated', 'Reg', (127, 137)) ('VHL syndrome', 'Disease', 'MESH:D006623', (38, 50)) ('mutations', 'Var', (5, 14)) ('associated', 'Reg', (15, 25)) ('VHL syndrome', 'Disease', (150, 162)) ('missense mutations', 'Var', (67, 85)) ('VHL syndrome', 'Disease', (38, 50)) ('truncation', 'Var', (106, 116)) ('deletions', 'Var', (92, 101)) 77985 23626751 Further, the degree of functional change in VHL gene product is believed to differ with different VHL mutations and mutations that do not cause a total loss of function but are associated with a risk of pheochromocytoma, have been described previously, similar to the p.Arg82Leu mutation reported here. ('pheochromocytoma', 'Disease', 'MESH:D010673', (203, 219)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (203, 219)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (268, 278)) ('VHL', 'Gene', (44, 47)) ('VHL', 'Gene', (98, 101)) ('VHL', 'Gene', '7428', (44, 47)) ('mutations', 'Var', (102, 111)) ('VHL', 'Gene', '7428', (98, 101)) ('pheochromocytoma', 'Disease', (203, 219)) ('associated', 'Reg', (177, 187)) 77986 23626751 Here, we analyzed VHL variant p.Arg82Leu with six different in silico tools namely SIFT, I-Mutant3, PhD-SNP, MutPred, PolyPhen2 and SNPs&GO in order to determine the pathogenic potential of the variant. ('p.Arg82Leu', 'Var', (30, 40)) ('SIFT', 'Disease', (83, 87)) ('VHL', 'Gene', '7428', (18, 21)) ('SIFT', 'Disease', 'None', (83, 87)) ('variant p.Arg82Leu', 'Var', (22, 40)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (30, 40)) ('VHL', 'Gene', (18, 21)) 77987 23626751 Table 1 shows the prediction scores of all the six tools for the variant p.Arg82Leu of VHL protein. ('VHL', 'Gene', '7428', (87, 90)) ('VHL', 'Gene', (87, 90)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (73, 83)) ('p.Arg82Leu', 'Var', (73, 83)) 77989 23626751 Further, based on the amino acids appearing at each position in the MSA, SIFT calculates the probability, that a missense variant is tolerated. ('SIFT', 'Disease', 'None', (73, 77)) ('SIFT', 'Disease', (73, 77)) ('missense variant', 'Var', (113, 129)) 77990 23626751 SIFT predicted that the variant p.Arg82Leu is deleterious with score 0.04. ('p.Arg82Leu', 'Mutation', 'rs794726890', (32, 42)) ('SIFT', 'Disease', 'None', (0, 4)) ('SIFT', 'Disease', (0, 4)) ('p.Arg82Leu', 'Var', (32, 42)) 77991 23626751 I- mutant-3 predicted that the variant p.Arg82Leu is related to the disease state. ('p.Arg82Leu', 'Mutation', 'rs794726890', (39, 49)) ('p.Arg82Leu', 'Var', (39, 49)) ('disease', 'Disease', (68, 75)) ('related', 'Reg', (53, 60)) 77992 23626751 PhD-SNP classified the VHL variant p.Arg82Leu as deleterious. ('p.Arg82Leu', 'Mutation', 'rs794726890', (35, 45)) ('p.Arg82Leu', 'Var', (35, 45)) ('VHL', 'Gene', '7428', (23, 26)) ('VHL', 'Gene', (23, 26)) 77993 23626751 MutPred also predicted that the variant p.Arg82Leu of VHL protein to be related to a pathogenic condition. ('protein', 'Protein', (58, 65)) ('p.Arg82Leu', 'Var', (40, 50)) ('VHL', 'Gene', (54, 57)) ('VHL', 'Gene', '7428', (54, 57)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (40, 50)) ('related', 'Reg', (72, 79)) 77994 23626751 PolyPhen2 predicted that the variant p.Arg82Leu probably damages the structure and function of VHL protein and gave a high PSIC score of 1. ('PSIC score', 'MPA', (123, 133)) ('VHL', 'Gene', (95, 98)) ('structure', 'MPA', (69, 78)) ('VHL', 'Gene', '7428', (95, 98)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (37, 47)) ('function', 'MPA', (83, 91)) ('damages', 'NegReg', (57, 64)) ('p.Arg82Leu', 'Var', (37, 47)) 77995 23626751 SNPs&GO predicted the VHL protein variant A82L as relevant to disease condition. ('protein variant', 'Var', (26, 41)) ('VHL', 'Gene', (22, 25)) ('VHL', 'Gene', '7428', (22, 25)) ('variant', 'Var', (34, 41)) ('A82L', 'Mutation', 'p.A82L', (42, 46)) 77996 23626751 All the six different tools used in this analysis predicted the variant p.Arg82Leu of VHL protein could lead to a disease condition. ('p.Arg82Leu', 'Mutation', 'rs794726890', (72, 82)) ('protein', 'Protein', (90, 97)) ('disease condition', 'Disease', (114, 131)) ('p.Arg82Leu', 'Var', (72, 82)) ('VHL', 'Gene', (86, 89)) ('lead to', 'Reg', (104, 111)) ('VHL', 'Gene', '7428', (86, 89)) 77997 23626751 Further, SNPs that change amino acids are more likely to be associated with cancer susceptibility, a feature well documented in numerous comparative studies of human disease genes. ('change amino acids', 'Var', (19, 37)) ('SNPs', 'Var', (9, 13)) ('cancer', 'Phenotype', 'HP:0002664', (76, 82)) ('human', 'Species', '9606', (160, 165)) ('cancer', 'Disease', (76, 82)) ('cancer', 'Disease', 'MESH:D009369', (76, 82)) ('associated', 'Reg', (60, 70)) 77998 23626751 We analyzed the evolutionary conservation of the amino acid change in the VHL protein by ConSurf to determine the degree of conservation of the mutant protein and notably, a high degree of conservation was identified which represents the evolutionary significance of the mutation (Figure 5). ('VHL', 'Gene', (74, 77)) ('mutant', 'Var', (144, 150)) ('VHL', 'Gene', '7428', (74, 77)) 77999 23626751 Further analysis was done using the project HOPE server for the p.Arg82Leu which showed deleterious effect by SIFT, I-Mutant3, PhD-SNP, MutPred, PolyPhen2 and SNPs&GO. ('I-Mutant3', 'Var', (116, 125)) ('PolyPhen2', 'Var', (145, 154)) ('MutPred', 'Var', (136, 143)) ('SIFT', 'Disease', 'None', (110, 114)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (64, 74)) ('SIFT', 'Disease', (110, 114)) 78001 23626751 To understand the potential consequences of the p.Arg82Leu mutation on VHL protein structure and function, we carried out independent molecular dynamics simulations for each of the two following systems: native VHL protein and the p.Arg82Leu mutant to elucidate the atomic level changes with respect to the time scale. ('p.Arg82Leu', 'Mutation', 'rs794726890', (48, 58)) ('p.Arg82Leu', 'Var', (231, 241)) ('VHL', 'Gene', (211, 214)) ('VHL', 'Gene', (71, 74)) ('p.Arg82Leu', 'Var', (48, 58)) ('VHL', 'Gene', '7428', (211, 214)) ('VHL', 'Gene', '7428', (71, 74)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (231, 241)) 78003 23626751 It is well established that higher deviation increases the stability of protein and high stability increases rigidity of the protein. ('high stability', 'MPA', (84, 98)) ('increases', 'PosReg', (45, 54)) ('higher deviation', 'Var', (28, 44)) ('rigidity', 'Disease', (109, 117)) ('rigidity', 'Phenotype', 'HP:0002063', (109, 117)) ('stability of protein', 'MPA', (59, 79)) ('increases', 'PosReg', (99, 108)) ('deviation', 'Var', (35, 44)) ('rigidity', 'Disease', 'MESH:D009127', (109, 117)) 78005 23626751 Hence from the stability analysis of native and mutant proteins it was observed that mutant proteins obtained high rigidity due to the incorporation of deleterious variant at position 82 of VHL protein. ('VHL', 'Gene', (190, 193)) ('high rigidity', 'Disease', 'MESH:D009127', (110, 123)) ('VHL', 'Gene', '7428', (190, 193)) ('rigidity', 'Phenotype', 'HP:0002063', (115, 123)) ('variant at position 82', 'Var', (164, 186)) ('high rigidity', 'Disease', (110, 123)) ('mutant', 'Var', (85, 91)) ('incorporation', 'Reg', (135, 148)) 78006 23626751 To evaluate the structural flexibility of both native and mutant structures of VHL protein, we calculated the Root Mean Square Fluctuations (RMSFs) values from the 12 ns simulation trajectory data. ('mutant', 'Var', (58, 64)) ('VHL', 'Gene', (79, 82)) ('VHL', 'Gene', '7428', (79, 82)) 78007 23626751 Consistent with the RMSD analysis, change in the flexibility of mutant models reflected the deleterious effect of amino acid substitution in VHL protein. ('VHL', 'Gene', '7428', (141, 144)) ('amino acid substitution', 'Var', (114, 137)) ('flexibility', 'MPA', (49, 60)) ('change', 'Reg', (35, 41)) ('mutant', 'Var', (64, 70)) ('VHL', 'Gene', (141, 144)) 78009 23626751 nsSNPs can affect wild type protein structure and function by affecting hydrogen bond formations. ('nsSNPs', 'Var', (0, 6)) ('affecting', 'Reg', (62, 71)) ('hydrogen bond formations', 'MPA', (72, 96)) ('hydrogen', 'Chemical', 'MESH:D006859', (72, 80)) ('wild type protein structure', 'MPA', (18, 45)) ('function', 'MPA', (50, 58)) ('affect', 'Reg', (11, 17)) 78010 23626751 Among the different kind of electrostatic forces, the intra molecular hydrogen bonds in protein act as a main contributor in maintaining the stability of protein structure. ('intra', 'Var', (54, 59)) ('hydrogen', 'Chemical', 'MESH:D006859', (70, 78)) ('stability', 'MPA', (141, 150)) 78011 23626751 Figure 8 depicts the number of hydrogen bonds formed in native and mutant structures of VHL protein. ('VHL', 'Gene', (88, 91)) ('hydrogen', 'Chemical', 'MESH:D006859', (31, 39)) ('mutant', 'Var', (67, 73)) ('VHL', 'Gene', '7428', (88, 91)) 78012 23626751 Native structure of VHL protein exhibits an average of ~80 to ~120 hydrogen bonds throughout the 12 ns simulation period and mutant structure obtained ~80 to ~110 hydrogen bonds in the whole simulation period. ('hydrogen bonds', 'MPA', (163, 177)) ('hydrogen', 'Chemical', 'MESH:D006859', (67, 75)) ('mutant', 'Var', (125, 131)) ('hydrogen bonds', 'MPA', (67, 81)) ('VHL', 'Gene', (20, 23)) ('VHL', 'Gene', '7428', (20, 23)) ('hydrogen', 'Chemical', 'MESH:D006859', (163, 171)) 78013 23626751 It was observed that significant numbers of hydrogen bonds were decreased in the mutant structures in comparison with the native structures. ('hydrogen', 'Chemical', 'MESH:D006859', (44, 52)) ('hydrogen bonds', 'MPA', (44, 58)) ('mutant', 'Var', (81, 87)) ('decreased', 'NegReg', (64, 73)) 78014 23626751 Hydrogen bond analysis results inferred that the occurrence of mutation destroyed the ability of hydrogen bond formation in p.Arg82Leu mutant structure. ('Hydrogen', 'Chemical', 'MESH:D006859', (0, 8)) ('hydrogen bond formation', 'MPA', (97, 120)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (124, 134)) ('destroyed', 'NegReg', (72, 81)) ('p.Arg82Leu', 'Var', (124, 134)) ('hydrogen', 'Chemical', 'MESH:D006859', (97, 105)) 78017 23626751 Salt bridge distances of VHL protein in both native and mutant states were calculated from the 12 ns trajectory data and shown in Figure 9. ('VHL', 'Gene', '7428', (25, 28)) ('VHL', 'Gene', (25, 28)) ('mutant', 'Var', (56, 62)) 78019 23626751 Comparing both the native and mutant structure salt bridge distance, p.Arg82Leu mutant structure obtained less distance between salt bridge forming residues. ('p.Arg82Leu', 'Mutation', 'rs794726890', (69, 79)) ('p.Arg82Leu', 'Var', (69, 79)) ('less', 'NegReg', (106, 110)) ('salt bridge', 'MPA', (47, 58)) 78022 23626751 SASA was calculated for both the native and mutant trajectory values of VHL protein. ('SASA', 'Chemical', '-', (0, 4)) ('mutant', 'Var', (44, 50)) ('VHL', 'Gene', '7428', (72, 75)) ('VHL', 'Gene', (72, 75)) 78024 23626751 But all the mutant structure p.Arg82Leu obtained less SASA of ~44 nm2 to ~54 nm2. ('p.Arg82Leu', 'Mutation', 'rs794726890', (29, 39)) ('SASA', 'MPA', (54, 58)) ('p.Arg82Leu', 'Var', (29, 39)) ('SASA', 'Chemical', '-', (54, 58)) 78025 23626751 In comparison with the native protein, the mutant proteins obtained less SASA. ('SASA', 'MPA', (73, 77)) ('SASA', 'Chemical', '-', (73, 77)) ('less', 'NegReg', (68, 72)) ('proteins', 'Protein', (50, 58)) ('mutant', 'Var', (43, 49)) 78026 23626751 Reduced SASA in the mutant proteins indicate that there may be change in the accessible area of amino acid residues from exposed to buried state vice versa. ('Reduced', 'NegReg', (0, 7)) ('SASA', 'MPA', (8, 12)) ('change', 'Reg', (63, 69)) ('SASA', 'Chemical', '-', (8, 12)) ('mutant', 'Var', (20, 26)) ('accessible area of amino acid residues', 'MPA', (77, 115)) 78027 23626751 Summing, all the in silico findings using different parameters such as RMSD, RMSF, salt bridge, H-bonds and SASA applied in molecular dynamic study, the variant p.Arg82Leu was found to alter the structure of the protein and to have a pathogenic potential. ('structure of the', 'MPA', (195, 211)) ('SASA', 'Chemical', '-', (108, 112)) ('alter', 'Reg', (185, 190)) ('p.Arg82Leu', 'Var', (161, 171)) ('pathogenic', 'Reg', (234, 244)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (161, 171)) 78031 23626751 Whether these patients will eventually develop symptoms or remain asymptomatic through their lifetime, indicating that the risks associated with carrying the p.Arg82Leu mutation is minimal, is a feature that can only be figured with a passage of time. ('patients', 'Species', '9606', (14, 22)) ('develop', 'PosReg', (39, 46)) ('p.Arg82Leu', 'Mutation', 'rs794726890', (158, 168)) ('p.Arg82Leu', 'Var', (158, 168)) 78085 21691539 Vascular constriction in the skin, gastrointestinal tract, brain, and kidney further potentiate systemic hypertension. ('Vascular', 'Var', (0, 8)) ('potentiate', 'PosReg', (85, 95)) ('hypertension', 'Disease', (105, 117)) ('gastrointestinal tract', 'Disease', 'MESH:D004067', (35, 57)) ('hypertension', 'Phenotype', 'HP:0000822', (105, 117)) ('Vascular constriction', 'Phenotype', 'HP:0025637', (0, 21)) ('systemic hypertension', 'Phenotype', 'HP:0000822', (96, 117)) ('hypertension', 'Disease', 'MESH:D006973', (105, 117)) ('Vascular constriction in the skin', 'Phenotype', 'HP:0011276', (0, 33)) ('gastrointestinal tract', 'Disease', (35, 57)) 78167 33324347 Fagerholm and co-workers showed that adrenergic alpha2A receptor knockout mice or adrenergic alpha2 receptor antagonists exhibit elevated insulin levels and reduced glucose levels. ('alpha2', 'Gene', (48, 54)) ('adrenergic', 'Var', (37, 47)) ('alpha2A', 'Gene', '28882', (48, 55)) ('alpha2', 'Gene', '170589', (48, 54)) ('glucose', 'Chemical', 'MESH:D005947', (165, 172)) ('insulin', 'Gene', '3630', (138, 145)) ('elevated insulin levels', 'Phenotype', 'HP:0000842', (129, 152)) ('alpha2', 'Gene', (93, 99)) ('elevated', 'PosReg', (129, 137)) ('alpha2', 'Gene', '170589', (93, 99)) ('insulin', 'Gene', (138, 145)) ('alpha2A', 'Gene', (48, 55)) ('mice', 'Species', '10090', (74, 78)) ('glucose levels', 'MPA', (165, 179)) ('reduced', 'NegReg', (157, 164)) 78172 33324347 Vieira and co-workers showed adrenergic alpha1 receptors antagonists stimulated glucagon secretion. ('stimulated', 'PosReg', (69, 79)) ('glucagon', 'Gene', (80, 88)) ('antagonists', 'Var', (57, 68)) ('glucagon', 'Gene', '2641', (80, 88)) ('adrenergic alpha1 receptors', 'Protein', (29, 56)) 78177 33324347 Regarding glucose uptake in skeletal muscle, Shi and co-workers showed stimulating adrenergic alpha1 receptors increased glucose uptake in skeletal muscle with elevated leptin signaling with adrenergic alpha1 receptors deficient and transgenic mice. ('glucose', 'Chemical', 'MESH:D005947', (10, 17)) ('leptin', 'Gene', '16846', (169, 175)) ('elevated', 'PosReg', (160, 168)) ('increased', 'PosReg', (111, 120)) ('leptin', 'Gene', (169, 175)) ('glucose', 'Chemical', 'MESH:D005947', (121, 128)) ('elevated leptin', 'Phenotype', 'HP:0031793', (160, 175)) ('increased glucose', 'Phenotype', 'HP:0003074', (111, 128)) ('adrenergic alpha1 receptors deficient', 'Phenotype', 'HP:0008259', (191, 228)) ('adrenergic alpha1 receptors', 'Protein', (83, 110)) ('stimulating', 'Var', (71, 82)) ('glucose uptake', 'MPA', (121, 135)) ('transgenic mice', 'Species', '10090', (233, 248)) 78220 33324347 The in vitro study indicated epinephrine could increase GLP-1 secretion through adrenergic alpha1, alpha2, and beta1 receptors, whereas the in vivo study indicated norepinephrine could inhibit GLP-1 secretion through adrenergic alpha1 and/or alpha2 receptors ( Table 1 , Figure 1 ). ('epinephrine', 'Chemical', 'MESH:D004837', (29, 40)) ('beta1', 'Gene', (111, 116)) ('epinephrine', 'Var', (29, 40)) ('GLP-1', 'Gene', (193, 198)) ('GLP-1', 'Gene', '2641', (56, 61)) ('alpha2', 'Gene', (242, 248)) ('adrenergic', 'Protein', (217, 227)) ('epinephrine', 'Chemical', 'MESH:D004837', (167, 178)) ('beta1', 'Gene', '597', (111, 116)) ('norepinephrine', 'Chemical', 'MESH:D009638', (164, 178)) ('adrenergic alpha1', 'Protein', (80, 97)) ('alpha2', 'Gene', '170589', (242, 248)) ('alpha2', 'Gene', (99, 105)) ('alpha2', 'Gene', '170589', (99, 105)) ('increase', 'PosReg', (47, 55)) ('GLP-1', 'Gene', (56, 61)) ('GLP-1', 'Gene', '2641', (193, 198)) ('inhibit', 'NegReg', (185, 192)) 78243 31254038 Genomic characterisation of subgroups with differing risk of lesion development and subsequent metastatic spread is refining the use of molecular imaging in the personalised approach to hereditary PPGL patients for detection, staging, and follow-up surveillance. ('PGL', 'Phenotype', 'HP:0002668', (198, 201)) ('PPGL', 'Chemical', '-', (197, 201)) ('patients', 'Species', '9606', (202, 210)) ('hereditary', 'Var', (186, 196)) ('PPGL', 'Disease', (197, 201)) 78265 31254038 Sympathetic PGLs: SDHx, VHL, EPAS1/HIF2A and prolyl hydroxylase 1/2 (PHD1/2) mutations. ('PHD1/2', 'Gene', (69, 75)) ('VHL', 'Gene', '7428', (24, 27)) ('HIF2A', 'Gene', '2034', (35, 40)) ('mutations', 'Var', (77, 86)) ('VHL', 'Gene', (24, 27)) ('SDHx', 'Gene', (18, 22)) ('EPAS1', 'Gene', '2034', (29, 34)) ('PGL', 'Phenotype', 'HP:0002668', (12, 15)) ('PHD1/2', 'Gene', '112398;54583', (69, 75)) ('HIF2A', 'Gene', (35, 40)) ('EPAS1', 'Gene', (29, 34)) 78268 31254038 Renal cell carcinoma (RCC), gastrointestinal stromal tumour (GIST), pituitary adenoma, and, rarely, pulmonary chondroma, neuroblastoma, and neuroendocrine neoplasms (carcinoids) can also be related to SDHx mutations. ('neuroblastoma', 'Disease', (121, 134)) ('neuroendocrine neoplasms', 'Phenotype', 'HP:0100634', (140, 164)) ('related', 'Reg', (190, 197)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (121, 134)) ('pulmonary chondroma', 'Phenotype', 'HP:0031474', (100, 119)) ('RCC', 'Disease', 'MESH:C538614', (22, 25)) ('carcinoids', 'Disease', 'MESH:D002276', (166, 176)) ('carcinoids', 'Disease', (166, 176)) ('neuroblastoma', 'Disease', 'MESH:D009447', (121, 134)) ('SDHx', 'Gene', (201, 205)) ('neoplasms', 'Phenotype', 'HP:0002664', (155, 164)) ('Renal cell carcinoma', 'Disease', 'MESH:C538614', (0, 20)) ('GIST', 'Phenotype', 'HP:0100723', (61, 65)) ('Renal cell carcinoma', 'Phenotype', 'HP:0005584', (0, 20)) ('carcinoids', 'Phenotype', 'HP:0100570', (166, 176)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (68, 85)) ('pulmonary chondroma', 'Disease', 'MESH:D002812', (100, 119)) ('mutations', 'Var', (206, 215)) ('pulmonary chondroma', 'Disease', (100, 119)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (68, 85)) ('gastrointestinal stromal tumour', 'Disease', (28, 59)) ('gastrointestinal stromal tumour', 'Disease', 'MESH:D046152', (28, 59)) ('neuroendocrine neoplasms', 'Disease', 'MESH:D018358', (140, 164)) ('gastrointestinal stromal tumour', 'Phenotype', 'HP:0100723', (28, 59)) ('pituitary adenoma', 'Disease', (68, 85)) ('RCC', 'Disease', (22, 25)) ('RCC', 'Phenotype', 'HP:0005584', (22, 25)) ('tumour', 'Phenotype', 'HP:0002664', (53, 59)) ('neuroendocrine neoplasms', 'Disease', (140, 164)) ('carcinoma', 'Phenotype', 'HP:0030731', (11, 20)) ('Renal cell carcinoma', 'Disease', (0, 20)) 78269 31254038 Some other manifestations suggestive of certain gene mutations are as follows: prior medullary thyroid carcinoma (MTC), RET; cafe-au-lait spots/neurofibromas, NF1; RCC (RCC)/haemangioblastoma/pancreatic tumour, VHL; congenital polycythaemia and duodenal somatostatinoma, EPAS1/HIF2A; and RCC/leiomyoma, fumarate hydratase (FH) (Table 1). ('tumour', 'Phenotype', 'HP:0002664', (203, 209)) ('EPAS1', 'Gene', '2034', (271, 276)) ('RCC', 'Disease', 'MESH:C538614', (164, 167)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (95, 112)) ('haemangioblastoma', 'Disease', 'MESH:D018325', (174, 191)) ('fumarate hydratase', 'Gene', '2271', (303, 321)) ('RET', 'Gene', '5979', (120, 123)) ('carcinoma', 'Phenotype', 'HP:0030731', (103, 112)) ('cafe-au-lait spots', 'Phenotype', 'HP:0000957', (125, 143)) ('RCC', 'Phenotype', 'HP:0005584', (169, 172)) ('VHL', 'Gene', (211, 214)) ('RCC/leiomyoma', 'Disease', (288, 301)) ('RCC', 'Disease', (169, 172)) ('haemangioblastoma', 'Phenotype', 'HP:0010797', (174, 191)) ('RCC', 'Phenotype', 'HP:0005584', (164, 167)) ('RCC', 'Disease', (288, 291)) ('FH', 'Gene', '2271', (323, 325)) ('RCC', 'Phenotype', 'HP:0005584', (288, 291)) ('neurofibromas', 'Disease', (144, 157)) ('RCC', 'Disease', 'MESH:C538614', (169, 172)) ('RCC/leiomyoma', 'Disease', 'MESH:C538614', (288, 301)) ('VHL', 'Gene', '7428', (211, 214)) ('MTC', 'Phenotype', 'HP:0002865', (114, 117)) ('pancreatic tumour', 'Disease', 'MESH:D010190', (192, 209)) ('mutations', 'Var', (53, 62)) ('RET', 'Gene', (120, 123)) ('RCC', 'Disease', 'MESH:C538614', (288, 291)) ('EPAS1', 'Gene', (271, 276)) ('fumarate hydratase', 'Gene', (303, 321)) ('HIF2A', 'Gene', '2034', (277, 282)) ('pancreatic tumour', 'Phenotype', 'HP:0002894', (192, 209)) ('congenital polycythaemia and duodenal somatostatinoma', 'Disease', 'MESH:D013005', (216, 269)) ('NF1', 'Gene', '4763', (159, 162)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (95, 112)) ('HIF2A', 'Gene', (277, 282)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (85, 112)) ('pancreatic tumour', 'Disease', (192, 209)) ('neurofibromas', 'Phenotype', 'HP:0001067', (144, 157)) ('thyroid carcinoma', 'Disease', (95, 112)) ('RCC', 'Disease', (164, 167)) ('neurofibromas', 'Disease', 'MESH:D009455', (144, 157)) ('haemangioblastoma', 'Disease', (174, 191)) ('NF1', 'Gene', (159, 162)) 78270 31254038 Furthermore, PPGLs with an underlying mutation in SDH subunit B (SDHB) are associated with a higher risk of aggressive behaviour that may lead to death, particularly due to the development of metastatic disease. ('PPGLs', 'Chemical', '-', (13, 18)) ('metastatic disease', 'Disease', (192, 210)) ('associated', 'Reg', (75, 85)) ('SDH subunit B', 'Gene', '6390', (50, 63)) ('PGL', 'Phenotype', 'HP:0002668', (14, 17)) ('SDHB', 'Gene', '6390', (65, 69)) ('mutation', 'Var', (38, 46)) ('death', 'Disease', 'MESH:D003643', (146, 151)) ('death', 'Disease', (146, 151)) ('SDH subunit B', 'Gene', (50, 63)) ('lead to', 'Reg', (138, 145)) ('aggressive behaviour', 'Phenotype', 'HP:0000718', (108, 128)) ('aggressive', 'Disease', (108, 118)) ('SDHB', 'Gene', (65, 69)) 78281 31254038 Typically, PPGLs show soft tissue attenuation that is greater than 10 Hounsfield units (HU) on CT. ('soft', 'CPA', (22, 26)) ('PGL', 'Phenotype', 'HP:0002668', (12, 15)) ('PPGLs', 'Chemical', '-', (11, 16)) ('PPGLs', 'Var', (11, 16)) 78291 31254038 There are currently some important factors that are either well proven or considered important for the presence of metastatic disease; these include SDHB and alpha thalassemia/mental retardation syndrome X-linked mutations, large tumours (>5 cm), extra-adrenal location, a noradrenergic biochemical phenotype, and, perhaps, a high methoxytyramine level. ('SDHB', 'Gene', '6390', (149, 153)) ('mental retardation', 'Phenotype', 'HP:0001249', (176, 194)) ('thalassemia/mental retardation syndrome', 'Disease', 'MESH:C538258', (164, 203)) ('SDHB', 'Gene', (149, 153)) ('tumour', 'Phenotype', 'HP:0002664', (230, 236)) ('tumours', 'Phenotype', 'HP:0002664', (230, 237)) ('tumours', 'Disease', 'MESH:D009369', (230, 237)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (331, 346)) ('thalassemia/mental retardation syndrome', 'Disease', (164, 203)) ('mutations', 'Var', (213, 222)) ('tumours', 'Disease', (230, 237)) 78306 31254038 Personal history of PPGL and/or other tumours Personal history of surgery, chemotherapy, and radiotherapy (including timing and frequency) Known genetic mutations or documented family history of PPGL Results of PPGL-related laboratory tests (metanephrines, methoxytyramine, calcitonin, chromogranin A levels) Results of previous anatomical and functional imaging studies, including baseline and nadir on-treatment imaging for the assessment of the tumour response(s) Use of drugs (e.g. ('mutations', 'Var', (153, 162)) ('tumour', 'Phenotype', 'HP:0002664', (448, 454)) ('tumour', 'Disease', (38, 44)) ('tumour', 'Disease', 'MESH:D009369', (448, 454)) ('tumour', 'Disease', (448, 454)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (257, 272)) ('PGL', 'Phenotype', 'HP:0002668', (21, 24)) ('PGL', 'Phenotype', 'HP:0002668', (212, 215)) ('PGL', 'Phenotype', 'HP:0002668', (196, 199)) ('PPGL', 'Chemical', '-', (20, 24)) ('chromogranin A', 'Gene', (286, 300)) ('tumours', 'Disease', (38, 45)) ('PPGL', 'Chemical', '-', (211, 215)) ('tumour', 'Phenotype', 'HP:0002664', (38, 44)) ('tumour', 'Disease', 'MESH:D009369', (38, 44)) ('PPGL', 'Chemical', '-', (195, 199)) ('PPGL', 'Gene', (195, 199)) ('tumours', 'Phenotype', 'HP:0002664', (38, 45)) ('tumours', 'Disease', 'MESH:D009369', (38, 45)) ('metanephrines', 'Chemical', 'MESH:D008676', (242, 255)) ('chromogranin A', 'Gene', '1113', (286, 300)) 78327 31254038 In patients with PPGL, uptake in the heart and liver is lowered by approximately 40%, most likely as a consequence of competition with circulating catecholamines. ('PPGL', 'Chemical', '-', (17, 21)) ('patients', 'Species', '9606', (3, 11)) ('catecholamines', 'Chemical', 'MESH:D002395', (147, 161)) ('PPGL', 'Var', (17, 21)) ('lowered', 'NegReg', (56, 63)) ('PGL', 'Phenotype', 'HP:0002668', (18, 21)) 78328 31254038 [123I]MIBG or [131I]MIBG is commercially available as a ready-to-use formulation that conforms to European/United States (US) pharmacopoeia requirements. ('MIBG', 'Chemical', 'MESH:D019797', (20, 24)) ('[131I]', 'Var', (14, 20)) ('MIBG', 'Chemical', 'MESH:D019797', (6, 10)) ('[123I]', 'Var', (0, 6)) 78343 31254038 No adverse allergic reaction is expected, although a single case of allergy caused by [131I]MIBG has been reported. ('MIBG', 'Gene', (92, 96)) ('allergic reaction', 'Phenotype', 'HP:0012393', (11, 28)) ('allergic reaction', 'Disease', (11, 28)) ('allergy', 'Phenotype', 'HP:0012393', (68, 75)) ('allergy', 'Disease', (68, 75)) ('allergy', 'Disease', 'MESH:D004342', (68, 75)) ('MIBG', 'Chemical', 'MESH:D019797', (92, 96)) ('[131I]', 'Var', (86, 92)) ('allergic reaction', 'Disease', 'MESH:D004342', (11, 28)) 78349 31254038 Breastfeeding should be discontinued for at least 3 days after [123I]MIBG administration without contamination by [124I] or [125I]. ('MIBG', 'Gene', (69, 73)) ('[123I]', 'Var', (63, 69)) ('MIBG', 'Chemical', 'MESH:D019797', (69, 73)) 78353 31254038 For [123I]MIBG, thyroid blockade (administration of potassium iodide 130 mg/day; equivalent to 100 mg of iodine) should be performed 1 h (30 min to 2 h) before tracer injection. ('thyroid blockade', 'Disease', 'MESH:D013959', (16, 32)) ('MIBG', 'Chemical', 'MESH:D019797', (10, 14)) ('thyroid blockade', 'Disease', (16, 32)) ('[123I]MIBG', 'Var', (4, 14)) ('potassium iodide', 'Chemical', 'MESH:D011193', (52, 68)) ('iodine', 'Chemical', 'MESH:D007455', (105, 111)) 78364 31254038 In some patients with PPGL, brown adipose tissue (BAT) is activated by high norepinephrine levels; consequently, [123/131I]MIBG uptake can be detected in BATand should be considered normal. ('PGL', 'Phenotype', 'HP:0002668', (23, 26)) ('brown adipose tissue', 'MPA', (28, 48)) ('high norepinephrine', 'Phenotype', 'HP:0003345', (71, 90)) ('PPGL', 'Var', (22, 26)) ('PPGL', 'Chemical', '-', (22, 26)) ('activated', 'PosReg', (58, 67)) ('MIBG', 'Chemical', 'MESH:D019797', (123, 127)) ('norepinephrine', 'Chemical', 'MESH:D009638', (76, 90)) ('patients', 'Species', '9606', (8, 16)) 78389 31254038 The kit contains two sterile vials containing lyophilised pentetreotide (10 mug) and indium (111I) chloride (122 MBq/1.1 mL at ART). ('kit', 'Gene', (4, 7)) ('indium (111I) chloride', 'Chemical', '-', (85, 107)) ('kit', 'Gene', '3815', (4, 7)) ('122 MBq/1.1', 'Var', (109, 120)) 78411 31254038 Several previous studies have found that [111In]DTPA-pentetreotide scintigraphy is superior to [131I/123I]MIBG scintigraphy for HNPGLs, with sensitivity of 79-100% and 18-50%, respectively. ('PGL', 'Phenotype', 'HP:0002668', (130, 133)) ('HNPGLs', 'Disease', (128, 134)) ('[111In]DTPA-pentetreotide', 'Chemical', '-', (41, 66)) ('[111In]DTPA-pentetreotide', 'Var', (41, 66)) ('MIBG', 'Chemical', 'MESH:D019797', (106, 110)) 78414 31254038 SSTR imaging using PET tracers has been performed with three different DOTA-coupled somatostatin agonists (SSTas), namely DOTA-Tyr3-octreotide (DOTATOC, edotreotide), DOTA-Tyr3-octreotate (DOTATATE, oxodotreotide), and DOTA-Nal3-octreotide (DOTANOC). ('SSTa', 'Chemical', '-', (107, 111)) ('somatostatin', 'Gene', '6750', (84, 96)) ('DOTA-Tyr3-octreotide', 'Var', (122, 142)) ('DOTA-Tyr3-octreotate', 'Var', (167, 187)) ('oxodotreotide', 'Chemical', '-', (199, 212)) ('somatostatin', 'Gene', (84, 96)) ('DOTATOC', 'Chemical', 'MESH:C106246', (144, 151)) ('DOTA-Tyr3-octreotate', 'Chemical', '-', (167, 187)) ('DOTA-Tyr3-octreotide', 'Chemical', 'MESH:C106246', (122, 142)) ('DOTATATE', 'Chemical', '-', (189, 197)) ('edotreotide', 'Chemical', 'MESH:C106246', (153, 164)) ('DOTANOC', 'Chemical', '-', (241, 248)) ('DOTA-Nal3-octreotide', 'Chemical', '-', (219, 239)) ('DOTA-Nal3-octreotide', 'Var', (219, 239)) 78425 31254038 After intravenous administration, [68Ga]SSTas concentrate in all SSTR2-expressing organs; these include the pituitary, thyroid, adrenal, prostate, and salivary glands; spleen; kidney; pancreas; and liver. ('SSTR2', 'Gene', (65, 70)) ('SSTa', 'Chemical', '-', (40, 44)) ('SSTR2', 'Gene', '6752', (65, 70)) ('[68Ga]SSTas', 'Var', (34, 45)) ('68Ga', 'Chemical', 'MESH:C000615430', (35, 39)) 78426 31254038 [68Ga]DOTA-SSTas showed a bi-exponential blood half-life (2 and 50 min) and are mainly excreted by the kidney (40% and 75% of the injected dose at 3 and 24 h after injection, respectively). ('[68Ga]', 'Var', (0, 6)) ('68Ga', 'Chemical', 'MESH:C000615430', (1, 5)) ('SSTa', 'Chemical', '-', (11, 15)) ('bi-exponential', 'MPA', (26, 40)) 78433 31254038 The radiochemical purity of [68Ga]DOTATATE and [68Ga]DOTATOC must be higher than 92% and 95%, respectively. ('DOTATATE', 'Chemical', '-', (34, 42)) ('[68Ga]', 'Var', (47, 53)) ('68Ga', 'Chemical', 'MESH:C000615430', (48, 52)) ('[68Ga]', 'Var', (28, 34)) ('DOTATOC', 'Chemical', 'MESH:C106246', (53, 60)) ('68Ga', 'Chemical', 'MESH:C000615430', (29, 33)) 78448 31254038 There are scarce data on the use of [68Ga]DOTA-SSA for primary PHEOs/PPGL, although it has shown excellent results in localisation of these tumours when they are metastatic or extra-adrenal. ('tumour', 'Phenotype', 'HP:0002664', (140, 146)) ('[68Ga]', 'Var', (36, 42)) ('tumours', 'Phenotype', 'HP:0002664', (140, 147)) ('PPGL', 'Chemical', '-', (69, 73)) ('PHEOs', 'Chemical', '-', (63, 68)) ('tumours', 'Disease', 'MESH:D009369', (140, 147)) ('tumours', 'Disease', (140, 147)) ('PGL', 'Phenotype', 'HP:0002668', (70, 73)) ('68Ga', 'Chemical', 'MESH:C000615430', (37, 41)) 78450 31254038 In a recent systematic review and meta-analysis, the pooled detection rate for [68Ga]DOTA-SSA PET/CT was 93% [95% confidence interval (CI), 91-95%], which was significantly higher (P < 0.001 for all) than that for [18F]-labelled fluorodihydroxyphenylalanine (FDOPA) PET/CT (80%; 95% CI, 69-88%), [18F]FDG PET/CT (74%; 95% CI, 46-91%), and [123/131I]MIBG scintigraphy (38%; 95% CI, 20-59%). ('FDOPA', 'Chemical', '-', (259, 264)) ('dihydroxyphenylalanine', 'Chemical', 'MESH:D004295', (235, 257)) ('FDG', 'Chemical', 'MESH:D019788', (301, 304)) ('MIBG', 'Chemical', 'MESH:D019797', (349, 353)) ('[68Ga]DOTA-SSA', 'Var', (79, 93)) ('68Ga', 'Chemical', 'MESH:C000615430', (80, 84)) ('higher', 'PosReg', (173, 179)) 78454 31254038 In the published studies involving patients with extra-adrenal PGLs, [68Ga]DOTA-SSA PET/CT showed better patient-based and lesion-based detection rates than did [18F]FDOPA PET/CT (98% vs. 95% and 99% vs. 68%, respectively). ('[68Ga]DOTA-SSA', 'Var', (69, 83)) ('patient', 'Species', '9606', (105, 112)) ('FDOPA', 'Chemical', '-', (166, 171)) ('better', 'PosReg', (98, 104)) ('patient', 'Species', '9606', (35, 42)) ('PGL', 'Phenotype', 'HP:0002668', (63, 66)) ('lesion-based detection', 'CPA', (123, 145)) ('68Ga', 'Chemical', 'MESH:C000615430', (70, 74)) ('patients', 'Species', '9606', (35, 43)) ('patient-based', 'CPA', (105, 118)) 78455 31254038 According to a meta-analysis, [68Ga]DOTA-SSA PET/CT detected more SDHx-associated PPGL lesions than did [18F]FDG PET/CT. ('PPGL lesions', 'Disease', (82, 94)) ('[68Ga]DOTA-SSA', 'Var', (30, 44)) ('PPGL', 'Chemical', '-', (82, 86)) ('SDHx-associated', 'Gene', (66, 81)) ('FDG', 'Chemical', 'MESH:D019788', (109, 112)) ('68Ga', 'Chemical', 'MESH:C000615430', (31, 35)) ('PGL', 'Phenotype', 'HP:0002668', (83, 86)) 78460 31254038 On the other hand, [18F]FDOPA PET/CT may be more effective than [68Ga]DOTA-SSA PET/CT in the detection of PHEOs. ('PHEOs', 'Chemical', '-', (106, 111)) ('[18F]FDOPA', 'Var', (19, 29)) ('68Ga', 'Chemical', 'MESH:C000615430', (65, 69)) ('PHEOs', 'Disease', (106, 111)) ('FDOPA', 'Chemical', '-', (24, 29)) 78500 31254038 [18F]FDG-6P does not follow further enzymatic pathways and shows accumulation proportional to the cellular glycolytic rate. ('[18F]FDG-6P', 'Var', (0, 11)) ('FDG-6P', 'Chemical', '-', (5, 11)) ('accumulation', 'PosReg', (65, 77)) 78501 31254038 Interestingly, PPGLs with underlying SDHx mutations are more avid for [18F]FDG than are the other subtypes, mainly because of the accumulation of succinate due to Krebs cycle blockade. ('accumulation', 'PosReg', (130, 142)) ('succinate', 'Chemical', 'MESH:D019802', (146, 155)) ('PPGLs', 'Chemical', '-', (15, 20)) ('SDHx', 'Gene', (37, 41)) ('Krebs', 'Chemical', '-', (163, 168)) ('[18F]FDG', 'Var', (70, 78)) ('FDG', 'Chemical', 'MESH:D019788', (75, 78)) ('avid', 'MPA', (61, 65)) ('succinate', 'MPA', (146, 155)) ('mutations', 'Var', (42, 51)) ('PGL', 'Phenotype', 'HP:0002668', (16, 19)) 78526 31254038 Although [18F]FDG PET/CT is well accepted for MEN2-associated PHEOs, it only shows positivity in approximately 40% of patients. ('MEN2-associated PHEOs', 'Disease', (46, 67)) ('FDG', 'Chemical', 'MESH:D019788', (14, 17)) ('PHEOs', 'Chemical', '-', (62, 67)) ('[18F]FDG PET/CT', 'Var', (9, 24)) ('patients', 'Species', '9606', (118, 126)) 78527 31254038 However, it shows strong diagnostic potential for metastatic PPGLs, particularly those associated with SDHB mutations (sensitivity per lesion: 83% for SDHB-positive tumours vs. 62% for SDHB-negative tumours). ('SDHB', 'Gene', (185, 189)) ('tumour', 'Phenotype', 'HP:0002664', (199, 205)) ('SDHB', 'Gene', (103, 107)) ('SDHB-positive tumours', 'Disease', (151, 172)) ('SDHB-positive tumours', 'Disease', 'MESH:D009369', (151, 172)) ('SDHB-negative tumours', 'Disease', (185, 206)) ('mutations', 'Var', (108, 117)) ('PPGLs', 'Chemical', '-', (61, 66)) ('SDHB-negative tumours', 'Disease', 'MESH:D009369', (185, 206)) ('tumour', 'Phenotype', 'HP:0002664', (165, 171)) ('tumours', 'Phenotype', 'HP:0002664', (199, 206)) ('PGL', 'Phenotype', 'HP:0002668', (62, 65)) ('associated', 'Reg', (87, 97)) ('tumours', 'Phenotype', 'HP:0002664', (165, 172)) ('SDHB', 'Gene', '6390', (151, 155)) ('SDHB', 'Gene', '6390', (185, 189)) ('SDHB', 'Gene', (151, 155)) ('SDHB', 'Gene', '6390', (103, 107)) 78538 31254038 Currently, [18F]FDG is the most accessible tracer and plays an important role in the evaluation of these tumours, particularly SDHx-related PPGLs. ('tumours', 'Phenotype', 'HP:0002664', (105, 112)) ('PPGLs', 'Chemical', '-', (140, 145)) ('tumours', 'Disease', 'MESH:D009369', (105, 112)) ('FDG', 'Chemical', 'MESH:D019788', (16, 19)) ('tumours', 'Disease', (105, 112)) ('PGL', 'Phenotype', 'HP:0002668', (141, 144)) ('[18F]FDG', 'Var', (11, 19)) ('SDHx-related PPGLs', 'Disease', (127, 145)) ('tumour', 'Phenotype', 'HP:0002664', (105, 111)) ('PPGLs', 'Disease', (140, 145)) 78542 31254038 Because of recent and excellent results obtained with PET imaging using various [68Ga]SSAs for patients with hereditary and non-hereditary PPGLs, [68Ga]DOTATATE is approved by the Food and Drug Administration while [68Ga]DOTATOC is approved by the EMA for the evaluation of PPGLs and GEP NETs, respectively. ('PPGLs', 'Chemical', '-', (139, 144)) ('NET', 'Gene', '6530', (288, 291)) ('[68Ga]', 'Var', (146, 152)) ('68Ga', 'Chemical', 'MESH:C000615430', (216, 220)) ('68Ga', 'Chemical', 'MESH:C000615430', (147, 151)) ('patients', 'Species', '9606', (95, 103)) ('NET', 'Gene', (288, 291)) ('68Ga', 'Chemical', 'MESH:C000615430', (81, 85)) ('PPGLs', 'Chemical', '-', (274, 279)) ('PGL', 'Phenotype', 'HP:0002668', (140, 143)) ('PGL', 'Phenotype', 'HP:0002668', (275, 278)) ('DOTATATE', 'Chemical', '-', (152, 160)) ('DOTATOC', 'Chemical', 'MESH:C106246', (221, 228)) 78548 31254038 Compared with [123I]MIBG scintigraphy, [18F]FDOPA PET/CT imaging has fewer practical constraints and no drug interactions that can limit PHEO detection, while [18F]FDG can provide genotypic information that is tightly linked to tumour behavior (i.e., SDHB). ('MIBG', 'Chemical', 'MESH:D019797', (20, 24)) ('FDOPA', 'Chemical', '-', (44, 49)) ('drug interaction', 'Phenotype', 'HP:0020172', (104, 120)) ('[18F]FDG', 'Var', (159, 167)) ('SDHB', 'Gene', '6390', (251, 255)) ('SDHB', 'Gene', (251, 255)) ('tumour behavior', 'Disease', 'MESH:D001523', (228, 243)) ('FDG', 'Chemical', 'MESH:D019788', (164, 167)) ('tumour behavior', 'Disease', (228, 243)) ('tumour', 'Phenotype', 'HP:0002664', (228, 234)) 78550 31254038 In patients with SDHx-associated tumours, [68Ga]DOTA-SSA PET/CT can detect very small lesions that can be overlooked by [18F]FDOPA PET/CT. ('tumours', 'Phenotype', 'HP:0002664', (33, 40)) ('FDOPA', 'Chemical', '-', (125, 130)) ('tumours', 'Disease', 'MESH:D009369', (33, 40)) ('tumours', 'Disease', (33, 40)) ('patients', 'Species', '9606', (3, 11)) ('[68Ga]DOTA-SSA', 'Var', (42, 56)) ('tumour', 'Phenotype', 'HP:0002664', (33, 39)) ('68Ga', 'Chemical', 'MESH:C000615430', (43, 47)) 78555 31254038 Therefore, [68Ga]DOTA-SSA PET/CT is probably the preferred imaging modality at present, particularly for patients with SDHx mutations. ('patients', 'Species', '9606', (105, 113)) ('mutations', 'Var', (124, 133)) ('SDHx', 'Gene', (119, 123)) ('[68Ga]', 'Var', (11, 17)) ('68Ga', 'Chemical', 'MESH:C000615430', (12, 16)) 78559 31254038 [18F]FDOPA PET/CT can be used as a second-line imaging modality when SDHB mutations are absent or the genetic status is unknown, whereas [18F]FDG PET/CT can be considered for SDHB-associated metastatic PPGLs. ('SDHB', 'Gene', (69, 73)) ('FDG', 'Chemical', 'MESH:D019788', (142, 145)) ('FDOPA', 'Chemical', '-', (5, 10)) ('metastatic PPGLs', 'Disease', (191, 207)) ('mutations', 'Var', (74, 83)) ('PPGLs', 'Chemical', '-', (202, 207)) ('SDHB', 'Gene', '6390', (175, 179)) ('PGL', 'Phenotype', 'HP:0002668', (203, 206)) ('SDHB', 'Gene', (175, 179)) ('SDHB', 'Gene', '6390', (69, 73)) 78560 31254038 [123I]MIBG may lead to significant underestimation of metastatic disease and result in inappropriate management. ('MIBG', 'Chemical', 'MESH:D019797', (6, 10)) ('metastatic disease', 'CPA', (54, 72)) ('underestimation', 'NegReg', (35, 50)) ('MIBG', 'Gene', (6, 10)) ('[123I]', 'Var', (0, 6)) 78563 31254038 The clinical benefits of using high-specific-activity [I131]MIBG (Azedra ) for patients with metastatic, recurrent, and/or unresectable PPGLs will promote the use of MIBG imaging for in vivo detection of the cell membrane NE transporter system. ('Azedra', 'Chemical', 'MESH:D019797', (66, 72)) ('PGL', 'Phenotype', 'HP:0002668', (137, 140)) ('MIBG', 'Gene', (60, 64)) ('PPGLs', 'Chemical', '-', (136, 141)) ('MIBG', 'Chemical', 'MESH:D019797', (166, 170)) ('MIBG', 'Chemical', 'MESH:D019797', (60, 64)) ('patients', 'Species', '9606', (79, 87)) ('[I131]', 'Var', (54, 60)) 78566 31254038 Currently, there are limited data with respect to imaging studies for patients with VHL and RET mutations. ('patients', 'Species', '9606', (70, 78)) ('VHL', 'Gene', (84, 87)) ('RET', 'Gene', (92, 95)) ('VHL', 'Gene', '7428', (84, 87)) ('RET', 'Gene', '5979', (92, 95)) ('mutations', 'Var', (96, 105)) 78570 31254038 Second, these tumours, as well as those related to VHL mutations, are rarely metastatic (<5%). ('VHL', 'Gene', '7428', (51, 54)) ('mutations', 'Var', (55, 64)) ('tumours', 'Phenotype', 'HP:0002664', (14, 21)) ('tumour', 'Phenotype', 'HP:0002664', (14, 20)) ('tumours', 'Disease', 'MESH:D009369', (14, 21)) ('VHL', 'Gene', (51, 54)) ('tumours', 'Disease', (14, 21)) 78571 31254038 [18F]FDG PET and [18F]FDOPA PET/CT together with MRI can help in preoperative mapping of PHEOs within both adrenal glands and guide surgeons toward the most appropriate (feasible) approach. ('FDOPA', 'Chemical', '-', (22, 27)) ('PHEOs', 'Chemical', '-', (89, 94)) ('[18F]FDG', 'Var', (0, 8)) ('mapping', 'MPA', (78, 85)) ('[18F]FDOPA', 'Var', (17, 27)) ('FDG', 'Chemical', 'MESH:D019788', (5, 8)) 78573 31254038 Although SDHD and SDHB mutations both cause autosomal dominant diseases, the disease penetrance is different. ('SDHB', 'Gene', (18, 22)) ('SDHD', 'Gene', (9, 13)) ('SDHD', 'Gene', '6392', (9, 13)) ('cause', 'Reg', (38, 43)) ('mutations', 'Var', (23, 32)) ('autosomal dominant diseases', 'Disease', 'MESH:D030342', (44, 71)) ('SDHB', 'Gene', '6390', (18, 22)) ('autosomal dominant diseases', 'Disease', (44, 71)) 78575 31254038 Paternally inherited SDHD mutations are associated with a very high overall disease penetrance (>80%), whereas SDHB mutations are associated with an estimated penetrance of only 20-40%. ('SDHB', 'Gene', (111, 115)) ('disease penetrance', 'MPA', (76, 94)) ('SDHD', 'Gene', '6392', (21, 25)) ('mutations', 'Var', (26, 35)) ('SDHD', 'Gene', (21, 25)) ('SDHB', 'Gene', '6390', (111, 115)) 78578 31254038 The aim is to detect tumours in the early stages of development in order to minimise tumour spread and new cranial nerve impairment related to SDHD mutations, facilitate curative treatment, and potentially reduce the occurrence of metastases, particularly in patients with more aggressive genotypes. ('cranial nerve', 'Phenotype', 'HP:0001291', (107, 120)) ('tumour', 'Disease', 'MESH:D009369', (85, 91)) ('tumour', 'Phenotype', 'HP:0002664', (21, 27)) ('tumour', 'Disease', (85, 91)) ('tumour', 'Disease', 'MESH:D009369', (21, 27)) ('SDHD', 'Gene', '6392', (143, 147)) ('reduce', 'NegReg', (206, 212)) ('tumour', 'Disease', (21, 27)) ('minimise', 'NegReg', (76, 84)) ('patients', 'Species', '9606', (259, 267)) ('SDHD', 'Gene', (143, 147)) ('curative treatment', 'CPA', (170, 188)) ('metastases', 'Disease', 'MESH:D009362', (231, 241)) ('nerve impairment', 'Phenotype', 'HP:0009830', (115, 131)) ('mutations', 'Var', (148, 157)) ('facilitate', 'PosReg', (159, 169)) ('metastases', 'Disease', (231, 241)) ('tumours', 'Disease', (21, 28)) ('tumours', 'Phenotype', 'HP:0002664', (21, 28)) ('tumours', 'Disease', 'MESH:D009369', (21, 28)) ('new cranial nerve impairment', 'CPA', (103, 131)) ('tumour', 'Phenotype', 'HP:0002664', (85, 91)) 78580 31254038 On the basis of clinical studies performed in patients with PPGLs, [68Ga]DOTA-SSA PET should be prioritised, if available, over [18F]FDG PET, although its indication in the setting of non-proband SDHx-associated tumours has not been specifically studied. ('patients', 'Species', '9606', (46, 54)) ('tumour', 'Phenotype', 'HP:0002664', (212, 218)) ('PGL', 'Phenotype', 'HP:0002668', (61, 64)) ('[68Ga]DOTA-SSA', 'Var', (67, 81)) ('tumours', 'Phenotype', 'HP:0002664', (212, 219)) ('PPGLs', 'Chemical', '-', (60, 65)) ('SDHx-associated', 'Disease', (196, 211)) ('tumours', 'Disease', 'MESH:D009369', (212, 219)) ('tumours', 'Disease', (212, 219)) ('FDG', 'Chemical', 'MESH:D019788', (133, 136)) ('68Ga', 'Chemical', 'MESH:C000615430', (68, 72)) 78591 32393294 In recent years, it was noted that metastatic disease in PGL was more frequent in patients presenting with extra-adrenal PGL, with a PGL exceeding a size of 5 cm and/or carrying an SDHB germline mutation. ('germline mutation', 'Var', (186, 203)) ('patients', 'Species', '9606', (82, 90)) ('SDHB', 'Gene', '6390', (181, 185)) ('extra-adrenal PGL', 'Disease', (107, 124)) ('SDHB', 'Gene', (181, 185)) ('metastatic disease', 'Disease', (35, 53)) ('frequent', 'Reg', (70, 78)) 78632 32098148 Natural History and Management of Familial Paraganglioma Syndrome Type 1: Long-Term Data from a Large Family Head and neck paragangliomas are the most common clinical features of familial paraganglioma syndrome type 1 caused by succinate dehydrogenase complex subunit D (SDHD) mutation. ('paraganglioma', 'Phenotype', 'HP:0002668', (188, 201)) ('paraganglioma', 'Phenotype', 'HP:0002668', (123, 136)) ('paragangliomas', 'Phenotype', 'HP:0002668', (123, 137)) ('familial paraganglioma syndrome type 1', 'Disease', 'MESH:D010235', (179, 217)) ('mutation', 'Var', (277, 285)) ('neck paragangliomas', 'Disease', (118, 137)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (118, 137)) ('succinate dehydrogenase complex subunit D', 'Gene', '6392', (228, 269)) ('caused by', 'Reg', (218, 227)) ('succinate dehydrogenase complex subunit D', 'Gene', (228, 269)) ('familial paraganglioma syndrome type 1', 'Disease', (179, 217)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (43, 56)) ('SDHD', 'Gene', (271, 275)) ('SDHD', 'Gene', '6392', (271, 275)) ('Head and neck paragangliomas', 'Phenotype', 'HP:0002864', (109, 137)) ('Familial Paraganglioma Syndrome Type 1', 'Disease', (34, 72)) ('Familial Paraganglioma Syndrome Type 1', 'Disease', 'MESH:D010235', (34, 72)) 78633 32098148 In this study we propose a diagnostic algorithm for SDHD mutation carriers based on our family case series and literature review. ('mutation', 'Var', (57, 65)) ('SDHD', 'Gene', '6392', (52, 56)) ('SDHD', 'Gene', (52, 56)) 78635 32098148 The study summarizes the diagnostic accuracy of different functional imaging techniques in SDHD mutation carriers. ('SDHD', 'Gene', (91, 95)) ('SDHD', 'Gene', '6392', (91, 95)) ('mutation', 'Var', (96, 104)) 78640 32098148 Familial paraganglioma syndrome type 1 (FPGL1) is a rare autosomal dominant disorder associated to succinate dehydrogenase complex subunit D (SDHD) germline mutations. ('autosomal dominant disorder', 'Disease', 'MESH:D030342', (57, 84)) ('germline mutations', 'Var', (148, 166)) ('succinate dehydrogenase complex subunit D', 'Gene', '6392', (99, 140)) ('Familial paraganglioma syndrome type 1', 'Disease', 'MESH:D010235', (0, 38)) ('Familial paraganglioma syndrome type 1', 'Disease', (0, 38)) ('succinate dehydrogenase complex subunit D', 'Gene', (99, 140)) ('autosomal dominant disorder', 'Disease', (57, 84)) ('SDHD', 'Gene', '6392', (142, 146)) ('paraganglioma', 'Phenotype', 'HP:0002668', (9, 22)) ('associated', 'Reg', (85, 95)) ('SDHD', 'Gene', (142, 146)) 78642 32098148 Considering patients affected by pheochromocytomas, mutation in SDHD is found in 2,3% of cases. ('found', 'Reg', (72, 77)) ('patients', 'Species', '9606', (12, 20)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (33, 50)) ('SDHD', 'Gene', (64, 68)) ('SDHD', 'Gene', '6392', (64, 68)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (33, 49)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (33, 50)) ('mutation', 'Var', (52, 60)) ('pheochromocytomas', 'Disease', (33, 50)) 78643 32098148 Nowadays, the causal relationship between SDHD mutations and familial paraganglioma syndrome type 1 has been demonstrated. ('mutations', 'Var', (47, 56)) ('familial paraganglioma syndrome type 1', 'Disease', (61, 99)) ('paraganglioma', 'Phenotype', 'HP:0002668', (70, 83)) ('SDHD', 'Gene', (42, 46)) ('SDHD', 'Gene', '6392', (42, 46)) ('familial paraganglioma syndrome type 1', 'Disease', 'MESH:D010235', (61, 99)) 78644 32098148 More than 130 intragenic mutations, single or multiple exon deletions and intragenic duplications, have been identified in SDHD genes. ('SDHD', 'Gene', '6392', (123, 127)) ('SDHD', 'Gene', (123, 127)) ('multiple exon deletions', 'Var', (46, 69)) ('duplications', 'Var', (85, 97)) ('single', 'Var', (36, 42)) 78646 32098148 Modifications of this pathway increase concentration of intermediate substrates and alter cell metabolism, leading to activation of the angiogenic pathway, DNA hypermethylation, and alteration of the tumor microenvironment. ('tumor', 'Disease', 'MESH:D009369', (200, 205)) ('activation', 'PosReg', (118, 128)) ('DNA hypermethylation', 'MPA', (156, 176)) ('tumor', 'Phenotype', 'HP:0002664', (200, 205)) ('angiogenic pathway', 'Pathway', (136, 154)) ('cell metabolism', 'MPA', (90, 105)) ('tumor', 'Disease', (200, 205)) ('increase', 'PosReg', (30, 38)) ('Modifications', 'Var', (0, 13)) ('alteration', 'Reg', (182, 192)) ('alter', 'Reg', (84, 89)) ('concentration of intermediate substrates', 'MPA', (39, 79)) 78647 32098148 Although genetic and physiopathological aspects of SDHD mutations have been deeply studied, current pheochromocytomas and PGLs clinical guidelines do not focus specifically on the clinical management of FPGL1 patients. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (100, 116)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (100, 117)) ('mutations', 'Var', (56, 65)) ('PGLs', 'Phenotype', 'HP:0002668', (122, 126)) ('pheochromocytomas', 'Disease', (100, 117)) ('PGLs', 'Disease', 'MESH:D010235', (122, 126)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (100, 117)) ('patients', 'Species', '9606', (209, 217)) ('SDHD', 'Gene', '6392', (51, 55)) ('SDHD', 'Gene', (51, 55)) ('PGLs', 'Disease', (122, 126)) 78652 32098148 In a FPGL1 family with SDHD mutation, c.242C < T, p.Pro81Leu, 5 subjects (3 females and 2 males), were found to be affected by one or more PGLs (Figure 1). ('c.242C < T', 'Mutation', 'rs80338844', (38, 48)) ('SDHD', 'Gene', '6392', (23, 27)) ('PGLs', 'Disease', 'MESH:D010235', (139, 143)) ('p.Pro81Leu', 'Mutation', 'rs80338844', (50, 60)) ('SDHD', 'Gene', (23, 27)) ('c.242C < T', 'Var', (38, 48)) ('PGLs', 'Disease', (139, 143)) ('affected', 'Reg', (115, 123)) ('PGLs', 'Phenotype', 'HP:0002668', (139, 143)) 78675 32098148 FPGL1 is caused by the mutation in the SDHD gene and it is characterized by the development of PGLs, in the most of cases localized in the head and neck region. ('PGLs', 'Disease', (95, 99)) ('caused by', 'Reg', (9, 18)) ('mutation', 'Var', (23, 31)) ('PGLs', 'Phenotype', 'HP:0002668', (95, 99)) ('SDHD', 'Gene', (39, 43)) ('SDHD', 'Gene', '6392', (39, 43)) ('FPGL1', 'Disease', (0, 5)) ('PGLs', 'Disease', 'MESH:D010235', (95, 99)) 78678 32098148 Mean life expectancy of SDHD mutation carriers was not calculated, because no patients died during the follow-up. ('mutation', 'Var', (29, 37)) ('patients', 'Species', '9606', (78, 86)) ('SDHD', 'Gene', (24, 28)) ('SDHD', 'Gene', '6392', (24, 28)) 78684 32098148 More rarely, SDHD mutation carriers can develop other kinds of tumor. ('tumor', 'Disease', (63, 68)) ('SDHD', 'Gene', (13, 17)) ('SDHD', 'Gene', '6392', (13, 17)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('mutation', 'Var', (18, 26)) ('develop', 'PosReg', (40, 47)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) 78689 32098148 Clinical management of SDHD mutation carriers is challenging. ('mutation', 'Var', (28, 36)) ('SDHD', 'Gene', (23, 27)) ('SDHD', 'Gene', '6392', (23, 27)) 78692 32098148 Data on the diagnostic accuracy of 3-MT are contrasting: even if same initial data suggested that the dosage of plasma 3-MT can increased the detection rate of pheochromocytomas and sympathetic PGLs, especially in SDHB and SDHD mutation carriers, a recent prospective study by Rao et al. ('PGLs', 'Phenotype', 'HP:0002668', (194, 198)) ('mutation', 'Var', (228, 236)) ('SDHB', 'Gene', '6390', (214, 218)) ('PGLs', 'Disease', 'MESH:D010235', (194, 198)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (160, 177)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (160, 176)) ('increased', 'PosReg', (128, 137)) ('SDHB', 'Gene', (214, 218)) ('detection', 'MPA', (142, 151)) ('SDHD', 'Gene', '6392', (223, 227)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (160, 177)) ('pheochromocytomas', 'Disease', (160, 177)) ('PGLs', 'Disease', (194, 198)) ('SDHD', 'Gene', (223, 227)) 78693 32098148 In particular in head and neck PGLs, adding 3-MT causes a small decrease in specificity and a slight increase in sensitivity. ('decrease', 'NegReg', (64, 72)) ('neck PGLs', 'Disease', (26, 35)) ('increase', 'PosReg', (101, 109)) ('specificity', 'MPA', (76, 87)) ('neck PGLs', 'Disease', 'MESH:D010235', (26, 35)) ('PGLs', 'Phenotype', 'HP:0002668', (31, 35)) ('3-MT', 'Var', (44, 48)) ('sensitivity', 'MPA', (113, 124)) 78701 32098148 Recently, American recommendations on surveillance in childhood with hereditary pheochromocytomas and PGLs have been published, in which a specific surveillance protocol is recommended for SDH mutation carriers (irrespective of mutation type). ('SDH', 'Gene', '6390', (189, 192)) ('hereditary pheochromocytomas', 'Disease', 'MESH:D010673', (69, 97)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('PGLs', 'Phenotype', 'HP:0002668', (102, 106)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (80, 97)) ('PGLs', 'Disease', 'MESH:D010235', (102, 106)) ('SDH', 'Gene', (189, 192)) ('hereditary pheochromocytomas', 'Disease', (69, 97)) ('mutation', 'Var', (193, 201)) ('PGLs', 'Disease', (102, 106)) 78703 32098148 Coherently, Daniel et al., in a study on 47 patients with SDHx mutations (mainly SDHB) confirmed that whole-body MR is effective for lesion detection in this group of patients. ('mutations', 'Var', (63, 72)) ('patients', 'Species', '9606', (44, 52)) ('patients', 'Species', '9606', (167, 175)) ('SDHB', 'Gene', '6390', (81, 85)) ('SDHx', 'Chemical', '-', (58, 62)) ('SDHB', 'Gene', (81, 85)) ('SDHx', 'Gene', (58, 62)) 78704 32098148 inserted whole-body MR every 2 years in the diagnostic work-up of SDHD mutation carriers. ('mutation', 'Var', (71, 79)) ('SDHD', 'Gene', '6392', (66, 70)) ('SDHD', 'Gene', (66, 70)) 78707 32098148 Available guidelines do not recommend the use of US for the screening of neck PGLs in SDHD mutation carriers, even if US is the first line diagnostic procedure for various neck lesions. ('mutation', 'Var', (91, 99)) ('PGLs', 'Phenotype', 'HP:0002668', (78, 82)) ('SDHD', 'Gene', (86, 90)) ('neck PGLs', 'Disease', (73, 82)) ('neck PGLs', 'Disease', 'MESH:D010235', (73, 82)) ('SDHD', 'Gene', '6392', (86, 90)) 78710 32098148 Since silent neck PGLs are the most prevalent type of lesions in SDHD mutation carriers, neck US and CEUS could be part of radiological follow-up, also considering cost, feasibility, accessibility and patient agreement. ('neck PGLs', 'Disease', 'MESH:D010235', (13, 22)) ('neck PGLs', 'Disease', (13, 22)) ('PGLs', 'Phenotype', 'HP:0002668', (18, 22)) ('patient', 'Species', '9606', (201, 208)) ('mutation', 'Var', (70, 78)) ('SDHD', 'Gene', '6392', (65, 69)) ('SDHD', 'Gene', (65, 69)) 78715 32098148 Nevertheless, considering only SDHx mutation carriers, the accuracy of morphological examinations (neck MR and CT scan of other regions) seemed better than scintigraphy (123I-MIBG and 111In-pentetreotide somatostatin receptor scintigraphy -SRS-) in all sites apart from thoracic lesions in which SRS demonstrated the best sensitivity. ('SDHx', 'Chemical', '-', (31, 35)) ('SDHx', 'Gene', (31, 35)) ('123I-MIBG', 'Chemical', '-', (170, 179)) ('mutation', 'Var', (36, 44)) 78717 32098148 Considering hereditary PGLs, 18F-DOPA PET-CT is a sensitive and specific imaging modality for the detection and staging of pheochromocytomas and PGLs and was able to identify PGLs in SDHD mutation carrier in 8/8 cases. ('PGLs', 'Disease', 'MESH:D010235', (145, 149)) ('SDHD', 'Gene', '6392', (183, 187)) ('PGLs', 'Phenotype', 'HP:0002668', (23, 27)) ('pheochromocytomas', 'Disease', (123, 140)) ('mutation', 'Var', (188, 196)) ('PGLs', 'Disease', 'MESH:D010235', (23, 27)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (123, 140)) ('PGLs', 'Phenotype', 'HP:0002668', (175, 179)) ('PGLs', 'Phenotype', 'HP:0002668', (145, 149)) ('PGLs', 'Disease', (145, 149)) ('PGLs', 'Disease', 'MESH:D010235', (175, 179)) ('18F-DOPA', 'Chemical', '-', (29, 37)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (123, 139)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (123, 140)) ('PGLs', 'Disease', (23, 27)) ('SDHD', 'Gene', (183, 187)) ('PGLs', 'Disease', (175, 179)) 78719 32098148 Other studies reported that 18F-DOPA might be falsely negative in PGLs, especially those related to mutations in SDHD, and this lower uptake of 18F-DOPA by PGLs seems to be dependent on amino acid transport system L isoforms 3 and 4, which are less expressed in SDHD-mutated patients. ('SDHD', 'Gene', (262, 266)) ('mutations', 'Var', (100, 109)) ('PGLs', 'Disease', 'MESH:D010235', (156, 160)) ('18F-DOPA', 'Chemical', '-', (144, 152)) ('18F-DOPA', 'Chemical', '-', (28, 36)) ('SDHD', 'Gene', (113, 117)) ('SDHD', 'Gene', '6392', (113, 117)) ('PGLs', 'Disease', (66, 70)) ('SDHD', 'Gene', '6392', (262, 266)) ('PGLs', 'Disease', (156, 160)) ('lower', 'NegReg', (128, 133)) ('uptake of 18F-DOPA', 'MPA', (134, 152)) ('PGLs', 'Phenotype', 'HP:0002668', (66, 70)) ('patients', 'Species', '9606', (275, 283)) ('PGLs', 'Disease', 'MESH:D010235', (66, 70)) ('PGLs', 'Phenotype', 'HP:0002668', (156, 160)) ('negative', 'NegReg', (54, 62)) 78727 32098148 Based on the available evidence in literature, confirmed by our current experience, we propose a specific diagnostic algorithm for SDHD mutation carrier, as summarized in Figure 4. ('mutation', 'Var', (136, 144)) ('SDHD', 'Gene', (131, 135)) ('SDHD', 'Gene', '6392', (131, 135)) 78729 32098148 Data on the usefulness of 3-MT are not enough strong for recommending the use of this examination in all SDHD mutation carriers, so the decision of what biochemical evaluation, plasmatic or urinary, is most appropriate and depends also on the available exams in each center. ('SDHD', 'Gene', (105, 109)) ('SDHD', 'Gene', '6392', (105, 109)) ('mutation', 'Var', (110, 118)) 78732 32098148 18F-DOPA PET-CT is the most studied functional imaging, but it could be falsely negative in patients with SDHD mutations. ('mutations', 'Var', (111, 120)) ('18F-DOPA', 'Chemical', '-', (0, 8)) ('SDHD', 'Gene', '6392', (106, 110)) ('patients', 'Species', '9606', (92, 100)) ('SDHD', 'Gene', (106, 110)) 78733 32098148 Preliminary data seems to demonstrate a better accuracy of 68Ga-peptides PET-CT when compared to 18F-DOPA PET-CT in SDHD patients. ('18F-DOPA', 'Chemical', '-', (97, 105)) ('SDHD', 'Gene', (116, 120)) ('SDHD', 'Gene', '6392', (116, 120)) ('68Ga-peptides', 'Var', (59, 72)) ('patients', 'Species', '9606', (121, 129)) 78738 32098148 In metastatic PGLs, 131I-MIBG is the most studied treatment, while radiolabeled somatostatin analogs have been used in small retrospective and prospective studies. ('PGLs', 'Disease', (14, 18)) ('PGLs', 'Phenotype', 'HP:0002668', (14, 18)) ('131I-MIBG', 'Var', (20, 29)) ('PGLs', 'Disease', 'MESH:D010235', (14, 18)) ('131I-MIBG', 'Chemical', '-', (20, 29)) 78742 32098148 In a case series of 4 patients, two of them with SDHD mutation, octreotide treatment was able to stabilize tumor size in one patient with SDHD mutation (50%). ('mutation', 'Var', (54, 62)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumor', 'Disease', (107, 112)) ('patient', 'Species', '9606', (22, 29)) ('SDHD', 'Gene', '6392', (138, 142)) ('patients', 'Species', '9606', (22, 30)) ('octreotide', 'Chemical', 'MESH:D015282', (64, 74)) ('patient', 'Species', '9606', (125, 132)) ('SDHD', 'Gene', '6392', (49, 53)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) ('SDHD', 'Gene', (138, 142)) ('SDHD', 'Gene', (49, 53)) 78746 32098148 In SDHD mutation carriers, we suggest MR examination after genetic testing; periodic follow-up should include an annual biochemical and US screening and biannual neck-mediastinum MR examination. ('SDHD', 'Gene', (3, 7)) ('SDHD', 'Gene', '6392', (3, 7)) ('mutation', 'Var', (8, 16)) 78749 32098148 However, 68Ga-peptides PET-CT is a promising diagnostic technique and could represent the biological base of somatostatin analogues therapy in SDHD-mutated PGLs, even if further studies are needed to confirm their clinical application. ('68Ga-peptides', 'Var', (9, 22)) ('PGLs', 'Disease', 'MESH:D010235', (156, 160)) ('SDHD', 'Gene', '6392', (143, 147)) ('SDHD', 'Gene', (143, 147)) ('PGLs', 'Disease', (156, 160)) ('PGLs', 'Phenotype', 'HP:0002668', (156, 160)) 78799 31687640 About 27% to 40% of these tumors are associated with germline mutations in the Von Hippel-Lindau (VHL), Rearranged during Transfection (RET), Myc-Associated Factor X (MAX), Neurofibromin 1 (NF1), Succinate Dehydrogenase complex Assembly Factor 2 (SDHAF2), Succinate Dehydrogenase A (SDHA), Succinate Dehydrogenase B (SDHB), Succinate Dehydrogenase C (SDHC), Succinate Dehydrogenase D (SDHD), and Transmembrane Protein 127 (TMEM127) genes. ('Succinate Dehydrogenase C', 'Gene', (324, 349)) ('MAX', 'Gene', '4149', (167, 170)) ('TMEM127', 'Gene', (423, 430)) ('Neurofibromin 1', 'Gene', (173, 188)) ('Rearranged during Transfection', 'Gene', '5979', (104, 134)) ('Succinate', 'Chemical', 'MESH:D013386', (196, 205)) ('Transmembrane Protein 127', 'Gene', (396, 421)) ('tumors', 'Disease', 'MESH:D009369', (26, 32)) ('SDHAF2', 'Gene', (247, 253)) ('SDHB', 'Gene', (317, 321)) ('Succinate Dehydrogenase A', 'Gene', '6389', (256, 281)) ('NF1', 'Gene', (190, 193)) ('Succinate', 'Chemical', 'MESH:D013386', (290, 299)) ('Transmembrane Protein 127', 'Gene', '55654', (396, 421)) ('associated', 'Reg', (37, 47)) ('Neurofibromin 1', 'Gene', '4763', (173, 188)) ('Factor 2', 'Gene', '8458', (237, 245)) ('MAX', 'Gene', (167, 170)) ('mutations', 'Var', (62, 71)) ('Succinate', 'Chemical', 'MESH:D013386', (256, 265)) ('Succinate Dehydrogenase B', 'Gene', '6390', (290, 315)) ('Von Hippel-Lindau', 'Gene', '7428', (79, 96)) ('SDHC', 'Gene', (351, 355)) ('Von Hippel-Lindau', 'Gene', (79, 96)) ('Succinate Dehydrogenase D', 'Gene', (358, 383)) ('Succinate Dehydrogenase A', 'Gene', (256, 281)) ('Factor 2', 'Gene', (237, 245)) ('Succinate', 'Chemical', 'MESH:D013386', (324, 333)) ('Succinate Dehydrogenase D', 'Gene', '6392', (358, 383)) ('Myc-Associated Factor X', 'Gene', (142, 165)) ('Rearranged during Transfection', 'Gene', (104, 134)) ('Succinate', 'Chemical', 'MESH:D013386', (358, 367)) ('SDHA', 'Gene', (283, 287)) ('Succinate Dehydrogenase C', 'Gene', '6391', (324, 349)) ('tumors', 'Phenotype', 'HP:0002664', (26, 32)) ('Myc-Associated Factor X', 'Gene', '4149', (142, 165)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('Succinate Dehydrogenase B', 'Gene', (290, 315)) ('SDHD', 'Gene', (385, 389)) ('tumors', 'Disease', (26, 32)) 78824 31687640 Targeted next-generation sequencing of the tumor specimen (genes included in the Pediatric Solid Tumor Cancer Mutation Panel) did not reveal any clinically important alterations in the targeted genes but showed mutations in the Lysine N-methyltransferase 2C (KMT2C), Lysine N-methyltransferase 2D (KMT2D), n-myc proto-oncogene (MYCN) and Smoothened, Frizzled Class Receptor (SMO) genes, which were reported as variants of unknown significance. ('rat', 'Species', '10116', (18, 21)) ('MYCN', 'Gene', '4613', (328, 332)) ('Tumor Cancer', 'Disease', (97, 109)) ('tumor', 'Disease', (43, 48)) ('n-myc proto-oncogene', 'Gene', '4613', (306, 326)) ('tumor', 'Disease', 'MESH:D009369', (43, 48)) ('2C', 'Chemical', 'MESH:C023714', (255, 257)) ('KMT2D', 'Gene', '8085', (298, 303)) ('MYCN', 'Gene', (328, 332)) ('SMO) genes', 'Gene', (375, 385)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('Tumor Cancer', 'Disease', 'MESH:D009369', (97, 109)) ('Lysine N-methyltransferase 2D', 'Gene', (267, 296)) ('n-myc proto-oncogene', 'Gene', (306, 326)) ('2C', 'Chemical', 'MESH:C023714', (262, 264)) ('Lysine', 'Chemical', 'MESH:C114808', (228, 234)) ('Lysine', 'Chemical', 'MESH:C114808', (267, 273)) ('KMT2C', 'Gene', (259, 264)) ('KMT2C', 'Gene', '58508', (259, 264)) ('rat', 'Species', '10116', (170, 173)) ('mutations', 'Var', (211, 220)) ('Tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('KMT2D', 'Gene', (298, 303)) ('Lysine N-methyltransferase 2D', 'Gene', '8085', (267, 296)) 78841 31687640 More than a third of these tumors are associated with at least one of the common germline mutations, including VHL, RET, NF1, MAX, SDHA, SDHB, SDHC, SDHD, SDHAF2, and TMEM127 genes, and about 25% to 30% are associated with somatic mutations, such as RET, VHL, NF1, MAX, EPAS1/HIF2A, and Harvey rat sarcoma viral oncogene homolog (HRAS) genes. ('RET', 'Gene', (250, 253)) ('mutations', 'Var', (90, 99)) ('VHL', 'Gene', (111, 114)) ('HRAS', 'Gene', (330, 334)) ('MAX', 'Gene', (265, 268)) ('tumors', 'Disease', 'MESH:D009369', (27, 33)) ('rat', 'Species', '10116', (294, 297)) ('associated', 'Reg', (207, 217)) ('TMEM127', 'Gene', (167, 174)) ('MAX', 'Gene', '4149', (126, 129)) ('associated', 'Reg', (38, 48)) ('NF1', 'Gene', (260, 263)) ('sarcoma', 'Disease', 'MESH:D012509', (298, 305)) ('sarcoma', 'Disease', (298, 305)) ('HRAS', 'Gene', '293621', (330, 334)) ('MAX', 'Gene', '4149', (265, 268)) ('tumors', 'Phenotype', 'HP:0002664', (27, 33)) ('VHL', 'Gene', (255, 258)) ('EPAS1/HIF2A', 'Gene', (270, 281)) ('sarcoma', 'Phenotype', 'HP:0100242', (298, 305)) ('SDHC', 'Gene', (143, 147)) ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('MAX', 'Gene', (126, 129)) ('SDHD', 'Gene', (149, 153)) ('SDHAF2', 'Gene', (155, 161)) ('tumors', 'Disease', (27, 33)) ('SDHB', 'Gene', (137, 141)) ('SDHA', 'Gene', (131, 135)) ('NF1', 'Gene', (121, 124)) 78842 31687640 Some of these somatic mutations are linked with the processes involved in hypoxia adaptation. ('hypoxia', 'Disease', (74, 81)) ('hypoxia', 'Disease', 'MESH:D000860', (74, 81)) ('mutations', 'Var', (22, 31)) ('linked', 'Reg', (36, 42)) 78848 31687640 reported somatic EPAS1/HIF2A gene mutations in four out of the five cases with CCHD in their report, which points toward the hypoxia-induced somatic mutations playing a role in tumor causation. ('hypoxia', 'Disease', (125, 132)) ('CCHD', 'Disease', 'MESH:D006331', (79, 83)) ('tumor', 'Disease', 'MESH:D009369', (177, 182)) ('tumor', 'Phenotype', 'HP:0002664', (177, 182)) ('CHD', 'Phenotype', 'HP:0001627', (80, 83)) ('EPAS1/HIF2A', 'Gene', (17, 28)) ('hypoxia', 'Disease', 'MESH:D000860', (125, 132)) ('tumor', 'Disease', (177, 182)) ('CCHD', 'Disease', (79, 83)) ('mutations', 'Var', (34, 43)) 78854 31687640 The first one involves the hydroxylation of HIFalpha subunits at their two proline residues (Pro-402 and Pro-564 in HIF-1alpha), specifically at their 4'-location. ('Pro-564', 'Var', (105, 112)) ('hydroxylation', 'MPA', (27, 40)) ('HIF-1alpha', 'Gene', '3091', (116, 126)) ('Pro-402', 'Var', (93, 100)) ('HIF-1alpha', 'Gene', (116, 126)) ('proline', 'Chemical', 'MESH:C489032', (75, 82)) 78864 31687640 Recent studies have established a role of gain-of-function mutations in the EPAS1/HIF2A gene, in association with chronic hypoxia, which stabilizes HIFalpha, causing an upregulation of the genes involved in tumorigenesis and in the development of PPGL. ('genes', 'MPA', (189, 194)) ('PPGL', 'Disease', (247, 251)) ('EPAS1/HIF2A', 'Gene', (76, 87)) ('upregulation', 'PosReg', (169, 181)) ('tumor', 'Disease', 'MESH:D009369', (207, 212)) ('chronic hypoxia', 'Disease', 'MESH:D000860', (114, 129)) ('tumor', 'Phenotype', 'HP:0002664', (207, 212)) ('gain-of-function', 'PosReg', (42, 58)) ('PPGL', 'Disease', 'MESH:D010673', (247, 251)) ('mutations', 'Var', (59, 68)) ('tumor', 'Disease', (207, 212)) ('chronic hypoxia', 'Disease', (114, 129)) 78897 31687640 published practice guidelines on the surveillance of PPGL among patients carrying an SDHx (SDHA, SDHB, SDHC, or SDHD) variant mutation who are at an increased risk of developing these tumors. ('PPGL', 'Disease', (53, 57)) ('SDH', 'Gene', (91, 94)) ('SDH', 'Gene', (112, 115)) ('SDH', 'Gene', '6390', (103, 106)) ('patients', 'Species', '9606', (64, 72)) ('SDH', 'Gene', (85, 88)) ('tumor', 'Phenotype', 'HP:0002664', (184, 189)) ('SDH', 'Gene', '6390', (97, 100)) ('tumors', 'Disease', (184, 190)) ('tumors', 'Disease', 'MESH:D009369', (184, 190)) ('PPGL', 'Disease', 'MESH:D010673', (53, 57)) ('SDH', 'Gene', '6390', (91, 94)) ('tumors', 'Phenotype', 'HP:0002664', (184, 190)) ('SDH', 'Gene', (97, 100)) ('SDH', 'Gene', (103, 106)) ('SDH', 'Gene', '6390', (85, 88)) ('SDH', 'Gene', '6390', (112, 115)) ('variant mutation', 'Var', (118, 134)) 78898 31687640 However, the mean age of presentation in patients carrying any of the SDHx mutations was 13.5 years. ('patients', 'Species', '9606', (41, 49)) ('SDH', 'Gene', '6390', (70, 73)) ('mutations', 'Var', (75, 84)) ('SDH', 'Gene', (70, 73)) 78900 31687640 Screening was recommended starting at 5 years of age for SDHB mutation carriers and at 10 years of age for patients carrying a mutation in SDHA, SDHC, or SDHD. ('mutation', 'Var', (127, 135)) ('mutation', 'Var', (62, 70)) ('SDHB', 'Gene', (57, 61)) ('SDHD', 'Gene', (154, 158)) ('SDHC', 'Gene', (145, 149)) ('SDHA', 'Gene', (139, 143)) ('patients', 'Species', '9606', (107, 115)) 78929 31687640 Genetic alterations are shown to be involved in the intracellular signaling pathways leading to the aberrant activation of HREs and tumorigenesis. ('Genetic alterations', 'Var', (0, 19)) ('HREs', 'CPA', (123, 127)) ('tumor', 'Disease', 'MESH:D009369', (132, 137)) ('rat', 'Species', '10116', (12, 15)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('activation', 'PosReg', (109, 119)) ('tumor', 'Disease', (132, 137)) 78979 30371307 Thyroid hormone effects on the cardiovascular system are well documented and hyperthyroid states can result in increased cardiac output, up to 300% higher than that found in euthyroid individuals.70, 71, 72, 73, 74 Thyroid hormone increases heart rate and myocardial contractility while simultaneously decreasing systemic vascular resistance, thereby resulting in activation of the renin-angiotensin system. ('increases heart rate', 'Phenotype', 'HP:0001649', (231, 251)) ('myocardial contractility', 'CPA', (256, 280)) ('men', 'Species', '9606', (66, 69)) ('individuals.70', 'Var', (184, 198)) ('systemic vascular resistance', 'MPA', (313, 341)) ('renin', 'Gene', (382, 387)) ('hyperthyroid states', 'Phenotype', 'HP:0000836', (77, 96)) ('increases', 'PosReg', (231, 240)) ('activation', 'PosReg', (364, 374)) ('rat', 'Species', '10116', (247, 250)) ('heart rate', 'CPA', (241, 251)) ('decreasing', 'NegReg', (302, 312)) ('renin', 'Gene', '5972', (382, 387)) 78980 30371307 Triiodothyronine, the active form of thyroid hormone, acts at the nuclear level and increases transcriptional activation of cardiac proteins, both structural and regulatory proteins such as Na+/K+ ATPase, sarcoplasmic reticulum Ca2+-ATPase, voltage-gated ion channels, myosin heavy chain and beta-adrenergic receptors. ('Triiodothyronine', 'Var', (0, 16)) ('transcriptional activation', 'MPA', (94, 120)) ('cardiac proteins', 'Protein', (124, 140)) ('Na+/K+', 'Protein', (190, 196)) ('increases', 'PosReg', (84, 93)) ('beta-adrenergic receptors', 'Protein', (292, 317)) ('myosin', 'Protein', (269, 275)) ('Triiodothyronine', 'Chemical', 'MESH:D014284', (0, 16)) 79009 30371307 However, it is difficult to say whether mild glucose impairment exerts the same cardioprotective effect. ('glucose impairment exerts', 'Disease', (45, 70)) ('mild', 'Var', (40, 44)) ('glucose impairment exerts', 'Disease', 'MESH:D044882', (45, 70)) 79024 30371307 Another theory postulated that transient dysfunction of the sodium/calcium ion pump in the setting of hyponatremia, which is often associated with autoimmune polyendocrine syndrome, results in impaired cardiac contractility though only 1 patient presented with severe hyponatremia. ('hyponatremia', 'Disease', (268, 280)) ('dysfunction', 'Var', (41, 52)) ('autoimmune polyendocrine syndrome', 'Disease', (147, 180)) ('sodium', 'Chemical', 'MESH:D012964', (60, 66)) ('hyponatremia', 'Disease', 'MESH:D007010', (268, 280)) ('calcium', 'Chemical', 'MESH:D002118', (67, 74)) ('impaired cardiac contractility', 'Disease', 'MESH:D006331', (193, 223)) ('autoimmune polyendocrine syndrome', 'Disease', 'MESH:C538275', (147, 180)) ('hyponatremia', 'Phenotype', 'HP:0002902', (102, 114)) ('sodium/calcium ion pump', 'MPA', (60, 83)) ('impaired cardiac contractility', 'Disease', (193, 223)) ('hyponatremia', 'Disease', 'MESH:D007010', (102, 114)) ('patient', 'Species', '9606', (238, 245)) ('hyponatremia', 'Disease', (102, 114)) ('hyponatremia', 'Phenotype', 'HP:0002902', (268, 280)) 79069 29892268 Approximately 30% of patients with MPPG harbor a germline mutation of the succinate dehydrogenase subunit B of the mitochondrial enzymatic complex 2 gene (SDHB). ('SDHB', 'Gene', (155, 159)) ('MPPG', 'Chemical', '-', (35, 39)) ('MPPG', 'Disease', (35, 39)) ('patients', 'Species', '9606', (21, 29)) ('germline mutation', 'Var', (49, 66)) ('SDHB', 'Gene', '6390', (155, 159)) 79070 29892268 Tumors with SDHB mutations are characterized by abnormal angiogenesis and a hypervascular phenotype. ('SDHB', 'Gene', '6390', (12, 16)) ('SDHB', 'Gene', (12, 16)) ('angiogenesis', 'CPA', (57, 69)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('mutations', 'Var', (17, 26)) 79087 29892268 The surgical approach (i.e., open laparotomy or laparoscopy) must be carefully selected on the basis of the presence of clinical predictors of aggressiveness, such as the size and location of the primary tumor and the presence of SDHB mutations. ('aggressiveness', 'Disease', 'MESH:D001523', (143, 157)) ('tumor', 'Disease', 'MESH:D009369', (204, 209)) ('open laparotomy', 'Disease', (29, 44)) ('tumor', 'Phenotype', 'HP:0002664', (204, 209)) ('mutations', 'Var', (235, 244)) ('aggressiveness', 'Disease', (143, 157)) ('SDHB', 'Gene', '6390', (230, 234)) ('tumor', 'Disease', (204, 209)) ('open laparotomy', 'Disease', 'MESH:D005597', (29, 44)) ('aggressiveness', 'Phenotype', 'HP:0000718', (143, 157)) ('SDHB', 'Gene', (230, 234)) ('presence', 'Reg', (218, 226)) 79095 29892268 Resection of the primary tumor may decrease the catecholamine surge associated with these tumors and improve hormonal symptoms; patients may consequently have a lower risk for cardiovascular and gastrointestinal morbidity. ('catecholamine surge', 'Phenotype', 'HP:0003334', (48, 67)) ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('Resection', 'Var', (0, 9)) ('catecholamine', 'Chemical', 'MESH:D002395', (48, 61)) ('tumor', 'Disease', (25, 30)) ('catecholamine surge', 'MPA', (48, 67)) ('tumor', 'Disease', (90, 95)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('hormonal symptoms', 'MPA', (109, 126)) ('decrease', 'NegReg', (35, 43)) ('tumors', 'Disease', (90, 96)) ('cardiovascular and gastrointestinal morbidity', 'Disease', 'MESH:D002318', (176, 221)) ('tumors', 'Disease', 'MESH:D009369', (90, 96)) ('tumors', 'Phenotype', 'HP:0002664', (90, 96)) ('improve', 'PosReg', (101, 108)) ('patients', 'Species', '9606', (128, 136)) ('tumor', 'Disease', 'MESH:D009369', (25, 30)) ('tumor', 'Disease', 'MESH:D009369', (90, 95)) 79096 29892268 Furthermore, resection of the primary tumor is associated with an improvement in OS regardless of performance status, tumor burden, genetic profile, or hormonal status, likely because of a lower rate of metastatic spread, as patients exhibit similar OS rates irrespective of their hormonal status. ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('improvement', 'PosReg', (66, 77)) ('tumor', 'Disease', (38, 43)) ('tumor', 'Disease', 'MESH:D009369', (118, 123)) ('patients', 'Species', '9606', (225, 233)) ('lower', 'NegReg', (189, 194)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('tumor', 'Disease', (118, 123)) ('tumor', 'Disease', 'MESH:D009369', (38, 43)) ('metastatic spread', 'CPA', (203, 220)) ('resection', 'Var', (13, 22)) 79113 29892268 MPPGs associated with SDHB mutations and other MPPGs associated with an environment of pseudohypoxia (i.e., those with germline mutations in regulatory genes of the other subunits of the mitochondrial enzymatic complex 2, fumarase, or the protein von Hippel-Lindau disease) exhibit a phenotype characterized by large intratumor concentrations of vascular endothelial growth factors (VEGFs), platelet-derived growth factor beta (PDGF-beta), epidermal growth factors, fibroblast growth factors, and others; their cognate receptors are also overexpressed by these tumors. ('mutations', 'Var', (27, 36)) ('pseudohypoxia', 'Disease', 'None', (87, 100)) ('tumor', 'Disease', 'MESH:D009369', (322, 327)) ('protein von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (239, 272)) ('PDGF-beta', 'Gene', '5155', (428, 437)) ('tumors', 'Disease', 'MESH:D009369', (561, 567)) ('tumor', 'Phenotype', 'HP:0002664', (561, 566)) ('mutations', 'Var', (128, 137)) ('fumarase', 'Gene', '2271', (222, 230)) ('SDHB', 'Gene', '6390', (22, 26)) ('tumor', 'Phenotype', 'HP:0002664', (322, 327)) ('MPPG', 'Chemical', '-', (0, 4)) ('tumors', 'Phenotype', 'HP:0002664', (561, 567)) ('PDGF-beta', 'Gene', (428, 437)) ('protein von Hippel-Lindau disease', 'Disease', (239, 272)) ('SDHB', 'Gene', (22, 26)) ('MPPG', 'Chemical', '-', (47, 51)) ('tumors', 'Disease', (561, 567)) ('tumor', 'Disease', (561, 566)) ('fumarase', 'Gene', (222, 230)) ('tumor', 'Disease', (322, 327)) ('pseudohypoxia', 'Disease', (87, 100)) ('tumor', 'Disease', 'MESH:D009369', (561, 566)) 79115 29892268 Mutations of the EPAS1 gene, which codes for the HIF-2alpha, have been described in 6% of patients with pheochromocytoma and paraganglioma and strongly suggest a pathogenic and, therapeutically speaking, targetable role for hypoxia. ('HIF-2alpha', 'Gene', (49, 59)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (104, 120)) ('EPAS1', 'Gene', '2034', (17, 22)) ('paraganglioma', 'Disease', 'MESH:D010235', (125, 138)) ('HIF-2alpha', 'Gene', '2034', (49, 59)) ('paraganglioma', 'Phenotype', 'HP:0002668', (125, 138)) ('EPAS1', 'Gene', (17, 22)) ('hypoxia', 'Disease', 'MESH:D000860', (224, 231)) ('Mutations', 'Var', (0, 9)) ('described', 'Reg', (71, 80)) ('hypoxia', 'Disease', (224, 231)) ('pheochromocytoma', 'Disease', (104, 120)) ('patients', 'Species', '9606', (90, 98)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (104, 120)) ('paraganglioma', 'Disease', (125, 138)) 79121 29892268 Activating c-Met mutations may also facilitate the distant spread observed in some MPPGs. ('Activating', 'PosReg', (0, 10)) ('c-Met', 'Gene', (11, 16)) ('c-Met', 'Gene', '4233', (11, 16)) ('distant spread', 'CPA', (51, 65)) ('facilitate', 'PosReg', (36, 46)) ('mutations', 'Var', (17, 26)) ('MPPG', 'Chemical', '-', (83, 87)) 79122 29892268 For example, RAS mutations have been described in pheochromocytomas and paragangliomas. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (50, 67)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (50, 66)) ('paraganglioma', 'Phenotype', 'HP:0002668', (72, 85)) ('paragangliomas', 'Phenotype', 'HP:0002668', (72, 86)) ('described', 'Reg', (37, 46)) ('RAS', 'Gene', (13, 16)) ('mutations', 'Var', (17, 26)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (50, 86)) 79123 29892268 These mutations predict a constitutive activation of the mitogen-activated protein kinase and phosphoinositide 3-kinase (PI3K) pathways, leading to abnormal proliferation of pheochromocytoma and paraganglioma cells. ('activation', 'PosReg', (39, 49)) ('paraganglioma', 'Phenotype', 'HP:0002668', (195, 208)) ('pheochromocytoma', 'Disease', (174, 190)) ('phosphoinositide 3-kinase', 'Gene', '5295', (94, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (174, 190)) ('paraganglioma', 'Disease', (195, 208)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (174, 190)) ('phosphoinositide 3-kinase', 'Gene', (94, 119)) ('mutations', 'Var', (6, 15)) ('paraganglioma', 'Disease', 'MESH:D010235', (195, 208)) 79124 29892268 RAS mutations have not, however, yet been associated with a clear MPPG phenotype. ('mutations', 'Var', (4, 13)) ('MPPG', 'Chemical', '-', (66, 70)) ('RAS', 'Gene', (0, 3)) 79131 29892268 Mutations in ATRX which is involved in chromatin remodeling have been described in some MPPG tumors. ('MPPG tumors', 'Disease', 'MESH:D009369', (88, 99)) ('ATRX', 'Gene', (13, 17)) ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('ATRX', 'Gene', '546', (13, 17)) ('described', 'Reg', (70, 79)) ('MPPG tumors', 'Disease', (88, 99)) ('tumors', 'Phenotype', 'HP:0002664', (93, 99)) ('Mutations', 'Var', (0, 9)) 79134 29892268 Somatic NF1 mutations may inhibit autophagy in MPPG cells. ('autophagy', 'CPA', (34, 43)) ('NF1', 'Gene', (8, 11)) ('NF1', 'Gene', '4763', (8, 11)) ('mutations', 'Var', (12, 21)) ('inhibit', 'NegReg', (26, 33)) ('MPPG', 'Chemical', '-', (47, 51)) 79152 29892268 Sunitinib treatment had clinical benefits in both carriers of SDHB mutations and patients with apparently sporadic tumors. ('SDHB', 'Gene', '6390', (62, 66)) ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('benefits', 'PosReg', (33, 41)) ('patients', 'Species', '9606', (81, 89)) ('sporadic tumors', 'Disease', 'MESH:D009369', (106, 121)) ('mutations', 'Var', (67, 76)) ('tumors', 'Phenotype', 'HP:0002664', (115, 121)) ('Sunitinib', 'Chemical', 'MESH:D000077210', (0, 9)) ('sporadic tumors', 'Disease', (106, 121)) ('SDHB', 'Gene', (62, 66)) 79168 29892268 This trial aimed to evaluate pazopanib as a potential therapeutic option for MPPG patients because previous comparative studies in patients with kidney cancer suggested that pazopanib was better tolerated than sunitinib. ('patients', 'Species', '9606', (131, 139)) ('pazopanib', 'Chemical', 'MESH:C516667', (174, 183)) ('sunitinib', 'Chemical', 'MESH:D000077210', (210, 219)) ('patients', 'Species', '9606', (82, 90)) ('kidney cancer', 'Disease', 'MESH:D007680', (145, 158)) ('pazopanib', 'Var', (174, 183)) ('MPPG', 'Chemical', '-', (77, 81)) ('kidney cancer', 'Phenotype', 'HP:0009726', (145, 158)) ('cancer', 'Phenotype', 'HP:0002664', (152, 158)) ('kidney cancer', 'Disease', (145, 158)) ('pazopanib', 'Chemical', 'MESH:C516667', (29, 38)) 79191 29892268 Inhibition of the c-Met pathway may delay the development of tumor resistance and improve clinical outcomes. ('delay', 'NegReg', (36, 41)) ('c-Met', 'Gene', (18, 23)) ('c-Met', 'Gene', '4233', (18, 23)) ('improve', 'PosReg', (82, 89)) ('tumor', 'Disease', 'MESH:D009369', (61, 66)) ('Inhibition', 'Var', (0, 10)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('clinical outcomes', 'CPA', (90, 107)) ('tumor', 'Disease', (61, 66)) 79222 29892268 Furthermore, iobenguane 131I may be associated with a lower rate of cardiovascular events than conventional MIBG. ('iobenguane 131I', 'Chemical', 'MESH:D019797', (13, 28)) ('MIBG', 'Chemical', 'MESH:D019797', (108, 112)) ('cardiovascular events', 'CPA', (68, 89)) ('cardiovascular events', 'Phenotype', 'HP:0001626', (68, 89)) ('iobenguane 131I', 'Var', (13, 28)) ('lower', 'NegReg', (54, 59)) 79223 29892268 A phase 1 dose-escalation study of iobenguane 131I in patients with MPPG determined the maximum tolerated dose to be 296 MBq/kg (8 mCi/kg). ('296 MBq/kg', 'Var', (117, 127)) ('patients', 'Species', '9606', (54, 62)) ('MPPG', 'Chemical', '-', (68, 72)) ('iobenguane 131I', 'Chemical', 'MESH:D019797', (35, 50)) ('MPPG', 'Disease', (68, 72)) 79237 29892268 Examples of PRRT agents include 177Lu-DOTATATE and 90Y-DOTATE. ('90Y-DOTATE', 'Chemical', '-', (51, 61)) ('90Y-DOTATE', 'Var', (51, 61)) ('177Lu-DOTATATE', 'Var', (32, 46)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (32, 46)) 79243 29892268 Initial prospective studies of 177Lu-DOTATATE and 90Y-DOTATE included occasional patients with MPPG. ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (31, 45)) ('patients', 'Species', '9606', (81, 89)) ('MPPG', 'Chemical', '-', (95, 99)) ('90Y-DOTATE', 'Chemical', '-', (50, 60)) ('90Y-DOTATE', 'Var', (50, 60)) ('177Lu-DOTATATE', 'Var', (31, 45)) ('MPPG', 'Disease', (95, 99)) 79249 29892268 A retrospective study of patients with MPPG treated with MIBG (n = 16), 90Y-DOTATE (n = 12), or 177Lu-DOTATATE (n = 2) suggested that PRRT offered better OS and PFS than did conventional MIBG. ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (96, 110)) ('ret', 'Gene', '5979', (2, 5)) ('better', 'PosReg', (147, 153)) ('PFS', 'CPA', (161, 164)) ('90Y-DOTATE', 'Chemical', '-', (72, 82)) ('MIBG', 'Chemical', 'MESH:D019797', (187, 191)) ('MPPG', 'Chemical', '-', (39, 43)) ('patients', 'Species', '9606', (25, 33)) ('PRRT', 'Var', (134, 138)) ('MIBG', 'Chemical', 'MESH:D019797', (57, 61)) ('ret', 'Gene', (2, 5)) 79316 29117221 The area under the curve of the M-GAPP score (0.822) was significantly higher than that of the GAPP (0.728) (P = 0.012), but similar to that of the PASS (0.753) (P = 0.411). ('higher', 'PosReg', (71, 77)) ('GAPP', 'Chemical', '-', (34, 38)) ('GAPP', 'Chemical', '-', (95, 99)) ('M-GAPP', 'Var', (32, 38)) 79318 29117221 The GAPP was validated, and M-GAPP, a combination of some GAPP parameters and loss of SDHB staining, might be useful for the prediction of the metastatic potential of pheochromocytoma and paraganglioma. ('paraganglioma', 'Phenotype', 'HP:0002668', (188, 201)) ('SDHB', 'Gene', (86, 90)) ('GAPP', 'Chemical', '-', (30, 34)) ('GAPP', 'Chemical', '-', (4, 8)) ('M-GAPP', 'Var', (28, 34)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (167, 201)) ('GAPP', 'Chemical', '-', (58, 62)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (167, 183)) ('metastatic potential', 'CPA', (143, 163)) ('SDHB', 'Gene', '6390', (86, 90)) 79331 29117221 More importantly, the lack of the inclusion of mutations in the succinate dehydrogenase gene subunit B (SDHB) was pointed out as a limitation of the GAPP system, because SDHB mutations are well known to be strongly correlated with the metastatic potential of PPGL. ('succinate dehydrogenase gene subunit B', 'Gene', (64, 102)) ('correlated with', 'Reg', (215, 230)) ('SDHB', 'Gene', '6390', (170, 174)) ('PGL', 'Phenotype', 'HP:0002668', (260, 263)) ('PPGL', 'Chemical', '-', (259, 263)) ('succinate dehydrogenase gene subunit B', 'Gene', '6390', (64, 102)) ('SDHB', 'Gene', (170, 174)) ('metastatic potential', 'CPA', (235, 255)) ('mutations', 'Var', (175, 184)) ('SDHB', 'Gene', '6390', (104, 108)) ('PPGL', 'Disease', (259, 263)) ('GAPP', 'Chemical', '-', (149, 153)) ('SDHB', 'Gene', (104, 108)) 79332 29117221 Several studies have shown that SDHB gene mutations can be detected by the loss of SDHB staining on immunohistochemistry (IHC). ('SDHB', 'Gene', (83, 87)) ('SDHB', 'Gene', '6390', (32, 36)) ('staining', 'MPA', (88, 96)) ('SDHB', 'Gene', (32, 36)) ('loss', 'NegReg', (75, 79)) ('mutations', 'Var', (42, 51)) ('SDHB', 'Gene', '6390', (83, 87)) 79355 29117221 Univariate and multivariate Cox proportional hazards regression models were evaluated to assess the association of each parameter of the GAPP, PASS, and M-GAPP with the risk of malignancy. ('GAPP', 'Chemical', '-', (137, 141)) ('association', 'Interaction', (100, 111)) ('GAPP', 'Chemical', '-', (155, 159)) ('malignancy', 'Disease', 'MESH:D009369', (177, 187)) ('malignancy', 'Disease', (177, 187)) ('M-GAPP', 'Var', (153, 159)) 79376 29117221 In contrast, 35 of 38 (92.1%) PPGLs with a PASS <4 were non-metastatic, and 12 of 34 (35.3%) PPGLs with a PASS >=4 were metastatic (P = 0.010). ('PASS <4', 'Var', (43, 50)) ('PPGLs', 'Chemical', '-', (30, 35)) ('PGL', 'Phenotype', 'HP:0002668', (31, 34)) ('PPGLs', 'Chemical', '-', (93, 98)) ('PGL', 'Phenotype', 'HP:0002668', (94, 97)) ('non-metastatic', 'CPA', (56, 70)) 79379 29117221 Forty-eight of 53 (90.6%) PPGLs with M-GAPP <3 were non-metastatic, while 10 of 19 (52.6%) PPGLs with M-GAPP >=3 were metastatic (P<0.001). ('GAPP', 'Chemical', '-', (39, 43)) ('PPGLs', 'Chemical', '-', (91, 96)) ('PGL', 'Phenotype', 'HP:0002668', (92, 95)) ('PPGLs', 'Chemical', '-', (26, 31)) ('PGL', 'Phenotype', 'HP:0002668', (27, 30)) ('metastatic', 'CPA', (118, 128)) ('GAPP', 'Chemical', '-', (104, 108)) ('non-metastatic', 'CPA', (52, 66)) ('M-GAPP <3', 'Var', (37, 46)) 79382 29117221 The AUC of the M-GAPP score (0.822) was significantly higher than that of the GAPP score (P = 0.012) and similar to that of the PASS score (P = 0.411) (Table 7). ('higher', 'PosReg', (54, 60)) ('GAPP', 'Chemical', '-', (78, 82)) ('GAPP', 'Chemical', '-', (17, 21)) ('M-GAPP', 'Var', (15, 21)) 79388 29117221 The predictive ability of the M-GAPP score was better than that of the GAPP score, and was similar to that of the PASS. ('M-GAPP', 'Var', (30, 36)) ('GAPP', 'Chemical', '-', (71, 75)) ('better', 'PosReg', (47, 53)) ('GAPP', 'Chemical', '-', (32, 36)) 79389 29117221 Higher GAPP and M-GAPP scores, but not PASS, were associated with a shorter MFS. ('MFS', 'MPA', (76, 79)) ('GAPP', 'MPA', (7, 11)) ('GAPP', 'Chemical', '-', (7, 11)) ('GAPP', 'Chemical', '-', (18, 22)) ('M-GAPP scores', 'Var', (16, 29)) 79396 29117221 On the other hand, the GAPP has so far not been validated and does not include the presence of mutations in SDHB, which strongly correlates with metastatic potential. ('GAPP', 'Chemical', '-', (23, 27)) ('SDHB', 'Gene', (108, 112)) ('metastatic potential', 'CPA', (145, 165)) ('correlates with', 'Reg', (129, 144)) ('mutations', 'Var', (95, 104)) ('SDHB', 'Gene', '6390', (108, 112)) 79412 29117221 Most of the improvement was seen in the specificity (84.2% for M-GAPP vs. 50.9% for GAPP). ('improvement', 'PosReg', (12, 23)) ('M-GAPP', 'Var', (63, 69)) ('GAPP', 'Chemical', '-', (65, 69)) ('specificity', 'MPA', (40, 51)) ('GAPP', 'Chemical', '-', (84, 88)) 79418 29117221 Furthermore, although the loss of SDHB IHC staining can predict the SDHB mutation, it can be associated with other SDHA, SDHC, and SDHD mutations. ('SDHA', 'Gene', '6389', (115, 119)) ('SDHD', 'Gene', (131, 135)) ('predict', 'Reg', (56, 63)) ('SDHB', 'Gene', '6390', (68, 72)) ('associated', 'Reg', (93, 103)) ('SDHC', 'Gene', (121, 125)) ('SDHB', 'Gene', (68, 72)) ('SDHB', 'Gene', '6390', (34, 38)) ('SDHA', 'Gene', (115, 119)) ('SDHB', 'Gene', (34, 38)) ('SDHC', 'Gene', '6391', (121, 125)) ('mutation', 'Var', (73, 81)) ('SDHD', 'Gene', '6392', (131, 135)) 79419 29117221 Tumors with SDHA, SDHC, or SDHD mutations revealed lesser aggressive clinical behaviors than those with SDHB mutation, so lack of specificity of loss of SDHB IHC staining only for SDHB mutation can be major limitation of M-GAPP classification. ('aggressive clinical behaviors', 'Phenotype', 'HP:0000718', (58, 87)) ('SDHB', 'Gene', (153, 157)) ('SDHA', 'Gene', '6389', (12, 16)) ('SDHC', 'Gene', '6391', (18, 22)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('SDHB', 'Gene', '6390', (180, 184)) ('Tumors', 'Disease', (0, 6)) ('mutations', 'Var', (32, 41)) ('GAPP', 'Chemical', '-', (223, 227)) ('SDHB', 'Gene', (180, 184)) ('SDHC', 'Gene', (18, 22)) ('SDHD', 'Gene', '6392', (27, 31)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('SDHB', 'Gene', '6390', (104, 108)) ('SDHB', 'Gene', '6390', (153, 157)) ('aggressive clinical behaviors', 'CPA', (58, 87)) ('lesser', 'NegReg', (51, 57)) ('SDHA', 'Gene', (12, 16)) ('SDHD', 'Gene', (27, 31)) ('SDHB', 'Gene', (104, 108)) 79420 29117221 Thus, further comprehensive research is needed to improve the predictive scoring system of PPGLs through combinations of potential clinical-histological-genetic parameters including SDHB mutation with the M-GAPP system. ('PPGLs', 'Chemical', '-', (91, 96)) ('PGL', 'Phenotype', 'HP:0002668', (92, 95)) ('SDHB', 'Gene', '6390', (182, 186)) ('mutation', 'Var', (187, 195)) ('GAPP', 'Chemical', '-', (207, 211)) ('SDHB', 'Gene', (182, 186)) 79478 28321067 Previous autopsy studies and experimental animal studies have demonstrated that catecholamines produce myocardial damage, and that the myocardial damage in patients with pheochromocytoma is indistinguishable from that produced in experimental animals by catecholamine infusion. ('patients', 'Species', '9606', (156, 164)) ('catecholamines', 'Chemical', 'MESH:D002395', (80, 94)) ('catecholamine', 'Chemical', 'MESH:D002395', (254, 267)) ('pheochromocytoma', 'Disease', (170, 186)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (170, 186)) ('myocardial damage', 'Disease', 'MESH:D009202', (103, 120)) ('catecholamine', 'Chemical', 'MESH:D002395', (80, 93)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (170, 186)) ('myocardial damage', 'Disease', (103, 120)) ('catecholamines', 'Var', (80, 94)) ('myocardial damage', 'Disease', (135, 152)) ('myocardial damage', 'Disease', 'MESH:D009202', (135, 152)) 79524 26233809 Other indications for adrenalectomy include Cushing's disease patients refractory to neurosurgery and medical treatments, suspicion for malignancy, isolated adrenal metastasis, and a mass >= 4cm as the risk of cancer increases with increasing tumor size. ('malignancy', 'Disease', (136, 146)) ("Cushing's disease", 'Disease', 'MESH:D003480', (44, 61)) ('cancer', 'Phenotype', 'HP:0002664', (210, 216)) ("Cushing's disease", 'Disease', (44, 61)) ('tumor', 'Disease', 'MESH:D009369', (243, 248)) ('malignancy', 'Disease', 'MESH:D009369', (136, 146)) ('cancer', 'Disease', 'MESH:D009369', (210, 216)) ('mass >= 4cm', 'Var', (183, 194)) ('patients', 'Species', '9606', (62, 70)) ('cancer', 'Disease', (210, 216)) ('tumor', 'Phenotype', 'HP:0002664', (243, 248)) ('tumor', 'Disease', (243, 248)) 79753 23164001 VHL germline missense mutations were confirmed in all patients; the most common resulted in a substitution of glutamine for arginine at the 167th codon. ('substitution', 'Var', (94, 106)) ('glutamine', 'Protein', (110, 119)) ('glutamine', 'Chemical', 'MESH:D005973', (110, 119)) ('VHL', 'Disease', 'MESH:D006623', (0, 3)) ('patients', 'Species', '9606', (54, 62)) ('VHL', 'Disease', (0, 3)) ('arginine', 'Chemical', 'MESH:D001120', (124, 132)) ('resulted in', 'Reg', (80, 91)) ('arginine', 'MPA', (124, 132)) 79883 19935059 The various colors included fish-flesh, pinkish tan, gray, grayish yellow, purple, and blue; the appearance was often altered by hemorrhage. ('hemorrhage', 'Disease', 'MESH:D006470', (129, 139)) ('pinkish tan', 'Var', (40, 51)) ('grayish', 'MPA', (59, 66)) ('altered', 'Reg', (118, 125)) ('hemorrhage', 'Disease', (129, 139)) ('blue', 'Disease', (87, 91)) ('gray', 'MPA', (53, 57)) 80016 19935059 Comparative genomic hybridization has shown frequent deletion of the 1 cen-q21 chromosomal region, a locus that involves the SDHC gene. ('SDHC', 'Gene', '6391', (125, 129)) ('deletion', 'Var', (53, 61)) ('SDHC', 'Gene', (125, 129)) 80063 23678360 The PET-CT of this patient showed increased uptake of 18F-FDG (SUV, 3.5) in the adrenal mass. ('18F-FDG', 'Chemical', 'MESH:D019788', (54, 61)) ('patient', 'Species', '9606', (19, 26)) ('uptake', 'MPA', (44, 50)) ('18F-FDG', 'Var', (54, 61)) ('increased', 'PosReg', (34, 43)) 80208 21226896 It has been reported that a proportion of this latter group display seropositivity to pancreatic islet cell auto-antibodies. ('seropositivity', 'Var', (68, 82)) ('pancreatic', 'Disease', 'MESH:D010195', (86, 96)) ('pancreatic', 'Disease', (86, 96)) 80255 14626401 All parameters assessed, ie, operative time, blood loss, hospital stay, and analgesia requirements, were lower in the retroperitoneoscopy group. ('lower', 'NegReg', (105, 110)) ('hospital', 'CPA', (57, 65)) ('blood loss', 'Disease', (45, 55)) ('analgesia', 'Disease', 'MESH:D000699', (76, 85)) ('analgesia', 'Disease', (76, 85)) ('blood loss', 'Disease', 'MESH:D006473', (45, 55)) ('retroperitoneoscopy', 'Var', (118, 137)) 80356 32369901 Moreover, Aerothionin showed the potential to inhibit the adenosine A1 receptor. ('adenosine', 'Chemical', 'MESH:D000241', (58, 67)) ('inhibit', 'NegReg', (46, 53)) ('adenosine A1 receptor', 'Protein', (58, 79)) ('Aerothionin', 'Var', (10, 21)) ('Aerothionin', 'Chemical', 'MESH:C000603844', (10, 21)) 80374 32369901 Treatment with at least 25 microM Aerothionin (RV25microM = 82.8 +- 3.9%; RV50microM = 48.3 +- 4.0%; Figure 3A) diminished RV under normoxic conditions significantly resulting in a half-maximal effective concentration (EC50) of 48.1 microM in these cells. ('half-maximal', 'MPA', (181, 193)) ('Aerothionin', 'Chemical', 'MESH:C000603844', (34, 45)) ('diminished', 'NegReg', (112, 122)) ('RV50microM', 'Var', (74, 84)) 80375 32369901 Cultivation under hypoxia just slightly impaired the cellular response of the MTT cells towards Aerothionin (RV25microM = 84.5 +- 3.7%; RV50microM = 58.2 +- 2.0%). ('impaired', 'NegReg', (40, 48)) ('cellular response', 'MPA', (53, 70)) ('MTT', 'Chemical', '-', (78, 81)) ('hypoxia', 'Disease', 'MESH:D000860', (18, 25)) ('Aerothionin', 'Chemical', 'MESH:C000603844', (96, 107)) ('hypoxia', 'Disease', (18, 25)) ('RV50microM', 'Var', (136, 146)) 80377 32369901 Homoaerothionin reduced the RV under normoxia (RV25microM = 83.3 +- 5.4%; RV50microM = 55.7 +- 5.7%) and hypoxia (RV25microM = 94.2 +- 3.9%; RV50microM = 60.3 +- 4.1%) to a comparable extent (Figure 3A). ('hypoxia', 'Disease', 'MESH:D000860', (105, 112)) ('hypoxia', 'Disease', (105, 112)) ('reduced', 'NegReg', (16, 23)) ('RV25microM', 'Var', (114, 124)) ('RV50microM', 'Var', (74, 84)) ('Homoaerothionin', 'Chemical', '-', (0, 15)) 80390 32369901 Aerothionin (RV25microM = 74.0 +- 16.1%; RV50microM = 45.8 +- 13.7%) or Homoaerothionin (RV25microM = 63.7 +- 18.9%; RV50microM = 35.5 +- 7.3%) diminished the viability of these cells at a concentration of 50 microM (Figure 5B). ('RV25microM', 'Var', (13, 23)) ('Aerothionin', 'Chemical', 'MESH:C000603844', (0, 11)) ('RV50microM', 'Var', (41, 51)) ('diminished', 'NegReg', (144, 154)) ('RV50microM', 'Var', (117, 127)) ('viability', 'CPA', (159, 168)) ('RV25microM', 'Var', (89, 99)) ('Homoaerothionin', 'Chemical', '-', (72, 87)) 80393 32369901 Treatment with up to a concentration of 25 microM Aerothionin (RV25microM = 116.6 +- 4.0%; RV50microM = 100.8 +- 6.4%) stimulated the viability of 3T3 cells significantly (Figure 6A). ('Aerothionin', 'Chemical', 'MESH:C000603844', (50, 61)) ('viability', 'CPA', (134, 143)) ('stimulated', 'PosReg', (119, 129)) ('RV50microM', 'Var', (91, 101)) 80416 32369901 In comparison, Aeroplysinin-1 reduced the viability of the 3T3 fibroblasts significantly (EC50 = 40.1 microM). ('Aeroplysinin-1', 'Chemical', 'MESH:C042151', (15, 29)) ('viability', 'CPA', (42, 51)) ('reduced', 'NegReg', (30, 37)) ('Aeroplysinin-1', 'Var', (15, 29)) 80419 32369901 Moreover, dose-limiting side effects on the normal tissue and the potentially limited bioavailability of Aerothionin and Homoaerothionin could, for example, be improved by targeting chemical modification of the molecule structure or an encapsulation of the drug. ('Homoaerothionin', 'Chemical', '-', (121, 136)) ('chemical modification', 'Var', (182, 203)) ('Aerothionin', 'Chemical', 'MESH:C000603844', (105, 116)) ('bioavailability', 'MPA', (86, 101)) ('improved', 'PosReg', (160, 168)) 80427 32369901 Combination therapy with BYL719, a phosphatidylinositol-3-kinase alpha inhibitor, and everolimus, a mammalian target of rapamycin inhibitor, showed synergistic effects on PPGLs in vitro. ('everolimus', 'Chemical', 'MESH:D000068338', (86, 96)) ('PPGLs', 'Chemical', '-', (171, 176)) ('mammalian target of rapamycin', 'Gene', '2475', (100, 129)) ('mammalian target of rapamycin', 'Gene', (100, 129)) ('PPGLs', 'Disease', (171, 176)) ('BYL719', 'Var', (25, 31)) 80448 31324166 Absence of an embryonic stem cell DNA methylation signature in human cancer Differentiated cells that arise from stem cells in early development contain DNA methylation features that provide a memory trace of their fetal cell origin (FCO). ('human', 'Species', '9606', (63, 68)) ('cancer', 'Disease', 'MESH:D009369', (69, 75)) ('cancer', 'Phenotype', 'HP:0002664', (69, 75)) ('methylation', 'Var', (157, 168)) ('FCO', 'Chemical', '-', (234, 237)) ('cancer', 'Disease', (69, 75)) 80469 31324166 Programming the cancer stem cell phenotypes are genetic alterations and epigenetic changes in chromatin structure and DNA methylation. ('chromatin structure', 'Protein', (94, 113)) ('cancer', 'Disease', 'MESH:D009369', (16, 22)) ('cancer', 'Disease', (16, 22)) ('cancer', 'Phenotype', 'HP:0002664', (16, 22)) ('epigenetic changes', 'Var', (72, 90)) ('DNA methylation', 'MPA', (118, 133)) ('genetic alterations', 'Var', (48, 67)) 80470 31324166 The consequence of cancer stem cell epigenetic alterations is to unleash cellular plasticity that favors oncogenic cellular reprogramming. ('cancer', 'Disease', 'MESH:D009369', (19, 25)) ('cancer', 'Disease', (19, 25)) ('cellular plasticity', 'CPA', (73, 92)) ('epigenetic alterations', 'Var', (36, 58)) ('oncogenic cellular reprogramming', 'CPA', (105, 137)) ('favors', 'PosReg', (98, 104)) ('cancer', 'Phenotype', 'HP:0002664', (19, 25)) 80482 31324166 We were able to add nontumor normal samples of cervix, brain, adrenal gland and stomach from GEO data sets GSE46306, GSE80970, GSE77871 and GSE103186 to cervical squamous cell carcinoma and endocervical adenocarcinoma, glioblastoma multiforme, pheochromocytoma and stomach adenocarcinoma projects on TCGA. ('carcinoma', 'Phenotype', 'HP:0030731', (208, 217)) ('squamous cell carcinoma', 'Disease', 'MESH:D002294', (162, 185)) ('endocervical adenocarcinoma', 'Disease', (190, 217)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('stomach adenocarcinoma', 'Disease', 'MESH:D013274', (265, 287)) ('GSE46306', 'Var', (107, 115)) ('pheochromocytoma', 'Disease', (244, 260)) ('carcinoma', 'Phenotype', 'HP:0030731', (278, 287)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (244, 260)) ('squamous cell carcinoma', 'Disease', (162, 185)) ('glioblastoma multiforme', 'Disease', (219, 242)) ('glioblastoma', 'Phenotype', 'HP:0012174', (219, 231)) ('glioblastoma multiforme', 'Disease', 'MESH:D005909', (219, 242)) ('GSE77871', 'Var', (127, 135)) ('carcinoma', 'Phenotype', 'HP:0030731', (176, 185)) ('GSE80970', 'Var', (117, 125)) ('endocervical adenocarcinoma', 'Disease', 'MESH:D000230', (190, 217)) ('tumor', 'Disease', (23, 28)) ('stomach adenocarcinoma', 'Disease', (265, 287)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (162, 185)) ('tumor', 'Disease', 'MESH:D009369', (23, 28)) ('GSE103186', 'Var', (140, 149)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (244, 260)) 80533 31324166 We applied the FCO algorithm to GEO data sets GSE80241, representing 6 pancreatic ductal adenocarcinoma stem cell samples, and GSE92462, including 22 glioma stem cell samples. ('pancreatic ductal adenocarcinoma', 'Disease', (71, 103)) ('carcinoma', 'Phenotype', 'HP:0030731', (94, 103)) ('pancreatic ductal adenocarcinoma', 'Disease', 'MESH:D021441', (71, 103)) ('FCO', 'Chemical', '-', (15, 18)) ('GSE80241', 'Var', (46, 54)) ('pancreatic ductal adenocarcinoma', 'Phenotype', 'HP:0006725', (71, 103)) ('glioma', 'Disease', (150, 156)) ('glioma', 'Disease', 'MESH:D005910', (150, 156)) ('glioma', 'Phenotype', 'HP:0009733', (150, 156)) 80535 31324166 Further, among 27 FCO CpGs, 3 (cg10338787, cg17310258 and cg16154155) are associated with EZH2. ('cg16154155', 'Chemical', '-', (58, 68)) ('cg17310258', 'Var', (43, 53)) ('cg16154155', 'Var', (58, 68)) ('EZH2', 'Gene', '2146', (90, 94)) ('cg10338787', 'Chemical', '-', (31, 41)) ('EZH2', 'Gene', (90, 94)) ('cg17310258', 'Chemical', '-', (43, 53)) ('FCO', 'Chemical', '-', (18, 21)) ('associated', 'Reg', (74, 84)) ('cg10338787', 'Var', (31, 41)) 80536 31324166 We plotted the methylation beta values of these three loci in pancreatic carcinoma samples, normal pancreatic tissue samples and pancreatic cancer stem cell samples from GEO data sets GSE53051 and GSE80241. ('pancreatic carcinoma', 'Disease', (62, 82)) ('GSE53051', 'Var', (184, 192)) ('pancreatic cancer', 'Phenotype', 'HP:0002894', (129, 146)) ('GSE80241', 'Var', (197, 205)) ('pancreatic carcinoma', 'Disease', 'MESH:C562463', (62, 82)) ('pancreatic cancer', 'Disease', 'MESH:D010190', (129, 146)) ('pancreatic cancer', 'Disease', (129, 146)) ('cancer', 'Phenotype', 'HP:0002664', (140, 146)) ('carcinoma', 'Phenotype', 'HP:0030731', (73, 82)) 80557 31324166 The former model is supported by recent research indicating that heterogeneous tumor cells develop over time as cancer stem cells differentiate via genetic and epigenetic alterations. ('tumor', 'Disease', (79, 84)) ('cancer', 'Disease', (112, 118)) ('cancer', 'Disease', 'MESH:D009369', (112, 118)) ('epigenetic alterations', 'Var', (160, 182)) ('genetic', 'Var', (148, 155)) ('tumor', 'Disease', 'MESH:D009369', (79, 84)) ('cancer', 'Phenotype', 'HP:0002664', (112, 118)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) 80561 31324166 Further, our observation of a diminished FCO in tumors is seemingly at odds with reports that DNA hypermethylation in cancer preferentially targets the subset of polycomb repressor loci in cancer stem cells that are developmental regulators. ('cancer', 'Disease', (118, 124)) ('FCO', 'MPA', (41, 44)) ('preferentially', 'PosReg', (125, 139)) ('diminished', 'NegReg', (30, 40)) ('tumors', 'Disease', (48, 54)) ('tumors', 'Disease', 'MESH:D009369', (48, 54)) ('tumors', 'Phenotype', 'HP:0002664', (48, 54)) ('cancer', 'Phenotype', 'HP:0002664', (189, 195)) ('cancer', 'Phenotype', 'HP:0002664', (118, 124)) ('FCO', 'Chemical', '-', (41, 44)) ('cancer', 'Disease', 'MESH:D009369', (189, 195)) ('cancer', 'Disease', 'MESH:D009369', (118, 124)) ('tumor', 'Phenotype', 'HP:0002664', (48, 53)) ('hypermethylation', 'Var', (98, 114)) ('cancer', 'Disease', (189, 195)) 80600 31324166 DCK was supported by the Kansas IDeA Network of Biomedical Research Excellence (K-INBRE) Bioinformatics Core, supported in part by the National Institute of General Medical Science award P20GM103418, and NIH grant P30CA168524. ('P20GM103418', 'Var', (187, 198)) ('DCK', 'Gene', (0, 3)) ('DCK', 'Gene', '1633', (0, 3)) 80601 31324166 The datasets analyzed during the current study are available on The Cancer Genome Atlas (TCGA) https://portal.gdc.cancer.gov and the Gene Expression Omnibus data repository https://www.ncbi.nlm.nih.gov/geo/ (Accession numbers: GSE49656, GSE53051, GSE52068, GSE52826, GSE52955, GSE54503, GSE56044, GSE75546, GSE77871, GSE85845, GSE76938, GSE112047, GSE101961, GSE72245, GSE106600, GSE80241, GSE92462). ('GSE85845', 'Var', (317, 325)) ('Cancer', 'Phenotype', 'HP:0002664', (68, 74)) ('GSE112047', 'Var', (337, 346)) ('cancer', 'Phenotype', 'HP:0002664', (114, 120)) ('GSE76938', 'Var', (327, 335)) ('GSE56044', 'Var', (287, 295)) ('GSE52955', 'Var', (267, 275)) ('GSE72245', 'Var', (359, 367)) ('GSE80241', 'Var', (380, 388)) ('cancer', 'Disease', 'MESH:D009369', (114, 120)) ('Cancer Genome Atlas', 'Disease', 'MESH:D009369', (68, 87)) ('GSE101961', 'Var', (348, 357)) ('GSE53051', 'Var', (237, 245)) ('GSE75546', 'Var', (297, 305)) ('GSE106600', 'Var', (369, 378)) ('Cancer Genome Atlas', 'Disease', (68, 87)) ('GSE92462', 'Var', (390, 398)) ('GSE77871', 'Var', (307, 315)) ('cancer', 'Disease', (114, 120)) 80643 27821293 The molecular targeting therapies such as Sunitinib seem to have adverse effects particularly some mutations (SDH/VHL). ('SDH', 'Gene', '6390', (110, 113)) ('mutations', 'Var', (99, 108)) ('VHL', 'Disease', (114, 117)) ('SDH', 'Gene', (110, 113)) ('VHL', 'Disease', 'MESH:D006623', (114, 117)) ('Sunitinib', 'Chemical', 'MESH:D000077210', (42, 51)) 80653 27821293 The only predictor of malignancy is the SDHB gene germline mutation as it is found in more than 40% of cases and are associated with response to temozolomide. ('SDHB', 'Gene', '6390', (40, 44)) ('germline mutation', 'Var', (50, 67)) ('associated', 'Reg', (117, 127)) ('SDHB', 'Gene', (40, 44)) ('temozolomide', 'Chemical', 'MESH:D000077204', (145, 157)) ('response to temozolomide', 'MPA', (133, 157)) ('malignancy', 'Disease', (22, 32)) 80684 26945413 Approximately 1-quarter of sporadic pheochromocytoma patients may have related gene mutations, including mutations of the RET gene (associated with multiple endocrine neoplasia type 2), VHL gene (associated with von Hippel-Lindau disease), succinate dehydrogenase subunit B gene (SDHB), and succinate dehydrogenase subunit D (SDHD) gene. ('RET', 'Gene', '5979', (122, 125)) ('SDHD', 'Gene', '6392', (326, 330)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (36, 52)) ('sporadic', 'Disease', (27, 35)) ('mutations', 'Var', (105, 114)) ('patients', 'Species', '9606', (53, 61)) ('pheochromocytoma', 'Disease', (36, 52)) ('succinate dehydrogenase subunit D', 'Gene', (291, 324)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (36, 52)) ('RET', 'Gene', (122, 125)) ('SDHD', 'Gene', (326, 330)) ('neoplasia', 'Phenotype', 'HP:0002664', (167, 176)) ('endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (157, 183)) ('SDHB', 'Gene', '6390', (280, 284)) ('VHL', 'Gene', (186, 189)) ('endocrine neoplasia type 2', 'Disease', (157, 183)) ('associated', 'Reg', (196, 206)) ('mutations', 'Var', (84, 93)) ('associated', 'Reg', (132, 142)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (212, 237)) ('succinate dehydrogenase subunit D', 'Gene', '6392', (291, 324)) ('SDHB', 'Gene', (280, 284)) ('VHL', 'Gene', '7428', (186, 189)) ('von Hippel-Lindau disease', 'Disease', (212, 237)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (157, 176)) 80709 26945413 Immunohistochemistry showed CK (pan) (-), Melan-A (-), CgA (+), Syn (+), S-100 (+), Ki-67 (2%), CD56 (+), and beta-catenin (membrane +) (Figure 3). ('beta-catenin', 'Gene', (110, 122)) ('beta-catenin', 'Gene', '1499', (110, 122)) ('CD56', 'Gene', (96, 100)) ('Syn', 'Gene', '23336', (64, 67)) ('Syn', 'Gene', (64, 67)) ('CgA', 'Gene', '1113', (55, 58)) ('Ki-67', 'Var', (84, 89)) ('S-100', 'Gene', '6285', (73, 78)) ('S-100', 'Gene', (73, 78)) ('CgA', 'Gene', (55, 58)) ('CD56', 'Gene', '4684', (96, 100)) 80743 26945413 In contrast to the previous reports, in our case, T1WI showed hypointensity, T2WI showed slight hyperintensity, and DWI showed hyperintensity, which is similar to what is observed for pancreatic carcinoma. ('T1WI', 'Var', (50, 54)) ('hypointensity', 'MPA', (62, 75)) ('pancreatic carcinoma', 'Disease', (184, 204)) ('hyperintensity', 'MPA', (127, 141)) ('T2WI', 'Var', (77, 81)) ('pancreatic carcinoma', 'Disease', 'MESH:C562463', (184, 204)) ('hyperintensity', 'MPA', (96, 110)) ('carcinoma', 'Phenotype', 'HP:0030731', (195, 204)) 80753 26945413 Low reactivity for neuropeptides and high division are considered to be associated with malignant paraganglioma, whereas the presence of pleomorphism, mitosis, and vascular invasion is not necessarily related to the poor clinical course and prognosis. ('malignant paraganglioma', 'Disease', 'MESH:C565335', (88, 111)) ('Low', 'NegReg', (0, 3)) ('high', 'Var', (37, 41)) ('associated', 'Reg', (72, 82)) ('malignant paraganglioma', 'Disease', (88, 111)) ('neuropeptides', 'Protein', (19, 32)) ('mitosis', 'Disease', (151, 158)) ('mitosis', 'Disease', 'None', (151, 158)) ('paraganglioma', 'Phenotype', 'HP:0002668', (98, 111)) 80790 24920325 Familial occurrence of PGs is well recognized and caused by mutations in succinate dehydrogenase (SDH) subunit genes. ('caused by', 'Reg', (50, 59)) ('SDH', 'Gene', (98, 101)) ('PGs', 'Phenotype', 'HP:0002668', (23, 26)) ('PGs', 'Disease', (23, 26)) ('succinate dehydrogenase', 'Gene', (73, 96)) ('succinate dehydrogenase', 'Gene', '6390', (73, 96)) ('SDH', 'Gene', '6390', (98, 101)) ('mutations', 'Var', (60, 69)) 80954 25081061 Plasma Normetanephrine (NMN) and metanephrine (MN) were 9554.1 pg/ml and 169.1 pg/ml, respectively. ('Normetanephrine', 'Chemical', 'MESH:D009647', (7, 22)) ('metanephrine', 'Chemical', 'MESH:D008676', (10, 22)) ('NMN', 'Chemical', 'MESH:D009647', (24, 27)) ('9554.1', 'Var', (56, 62)) ('metanephrine', 'MPA', (33, 45)) ('metanephrine', 'Chemical', 'MESH:D008676', (33, 45)) 81001 25081061 Moreover, a fast screening of genomic DNA in our patient's sample failed to identify any common RET gene mutations. ('RET', 'Gene', (96, 99)) ('mutations', 'Var', (105, 114)) ('RET', 'Gene', '5979', (96, 99)) ('patient', 'Species', '9606', (49, 56)) 81004 25081061 So far, the only genetic manifestation of pheochromocytoma associated with WDHA syndrome was found being a NF1 gene mutation, with two cases reported in the literature. ('pheochromocytoma', 'Disease', 'MESH:D010673', (42, 58)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (42, 58)) ('NF1', 'Gene', '4763', (107, 110)) ('mutation', 'Var', (116, 124)) ('man', 'Species', '9606', (25, 28)) ('WDHA syndrome', 'Disease', (75, 88)) ('associated', 'Reg', (59, 69)) ('WDHA syndrome', 'Disease', 'MESH:D003969', (75, 88)) ('pheochromocytoma', 'Disease', (42, 58)) ('NF1', 'Gene', (107, 110)) 81005 25081061 A pheochromocytoma secreting calcitonin has been previously reported in a MEN2A patient bearing a triple RET gene mutation. ('RET', 'Gene', (105, 108)) ('MEN2A', 'Gene', '5979', (74, 79)) ('pheochromocytoma', 'Disease', (2, 18)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (2, 18)) ('RET', 'Gene', '5979', (105, 108)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (2, 18)) ('MEN2A', 'Gene', (74, 79)) ('mutation', 'Var', (114, 122)) ('patient', 'Species', '9606', (80, 87)) 81018 24905014 NFAT inhibition led to dominant expression of 2x/c, 3x/a and 4x/a PMCA variants, while in untreated cells the 2w,z/b, 3z,x/b,c,e,f, and 4x/b variants were found as well. ('variants', 'Var', (71, 79)) ('4x/a', 'Var', (61, 65)) ('2x/c', 'Var', (46, 50)) ('PMCA', 'Gene', (66, 70)) ('NFAT', 'Gene', '307820', (0, 4)) ('inhibition', 'NegReg', (5, 15)) ('3x/a', 'Var', (52, 56)) ('NFAT', 'Gene', (0, 4)) 81022 24905014 In the nervous system, alternative splicing of genes encoding the neural cell adhesion molecule (NCAM), NMDA receptors, and calcium pumps, for example the plasma membrane Ca2+-ATPase (PMCA), undergoes cell activity-induced changes. ('Ca2+', 'Chemical', 'MESH:D000069285', (171, 175)) ('neural cell adhesion molecule', 'Gene', (66, 95)) ('NCAM', 'Gene', (97, 101)) ('alternative splicing', 'Var', (23, 43)) ('neural cell adhesion molecule', 'Gene', '24586', (66, 95)) ('NCAM', 'Gene', '24586', (97, 101)) ('undergoes', 'Reg', (191, 200)) ('calcium', 'Chemical', 'MESH:D002118', (124, 131)) 81023 24905014 Instabilities in alternative splicing regulatory sequences and disturbances in the binding of regulatory proteins to these sequences are important causes of numerous human diseases. ('Instabilities', 'Var', (0, 13)) ('causes', 'Reg', (147, 153)) ('binding', 'Interaction', (83, 90)) ('human', 'Species', '9606', (166, 171)) ('disturbances', 'Var', (63, 75)) ('alternative splicing regulatory sequences', 'MPA', (17, 58)) 81030 24905014 Accordingly, alterative splicing has been found to influence the expression profile of various mRNAs encoding secretory proteins, including elements of membrane fusion complex: SNAP25, syntaxin 1 and synaptobrevin 1 and mRNAs encoding calcium transporters (calcium pumps, ions exchangers, calcium channels). ('synaptobrevin 1', 'Gene', '25624', (200, 215)) ('calcium', 'Chemical', 'MESH:D002118', (235, 242)) ('alterative splicing', 'Var', (13, 32)) ('SNAP25', 'Gene', (177, 183)) ('synaptobrevin 1', 'Gene', (200, 215)) ('influence', 'Reg', (51, 60)) ('expression profile', 'MPA', (65, 83)) ('calcium', 'Chemical', 'MESH:D002118', (257, 264)) ('SNAP25', 'Gene', '25012', (177, 183)) ('calcium', 'Chemical', 'MESH:D002118', (289, 296)) 81036 24905014 Thus, alternative splicing generates PMCA variants of different structure and biochemical properties, such as affinity for calcium ions, velocity of calcium ion transport or ability to interact with a different signaling proteins (e.g. ('calcium', 'Chemical', 'MESH:D002118', (149, 156)) ('interact', 'Interaction', (185, 193)) ('variants', 'Var', (42, 50)) ('PMCA', 'Gene', (37, 41)) ('calcium', 'Chemical', 'MESH:D002118', (123, 130)) ('velocity', 'MPA', (137, 145)) ('affinity', 'Interaction', (110, 118)) 81087 24905014 On the other hand, these experiments showed that inhibition of NFAT influenced significantly the expression pattern of PMCA4b as well as PMCA2 and PMCA3. ('NFAT', 'Gene', (63, 67)) ('PMCA2', 'Gene', (137, 142)) ('PMCA3', 'Gene', '29599', (147, 152)) ('PMCA4', 'Gene', (119, 124)) ('PMCA4', 'Gene', '29600', (119, 124)) ('PMCA2', 'Gene', '24215', (137, 142)) ('influenced', 'Reg', (68, 78)) ('NFAT', 'Gene', '307820', (63, 67)) ('PMCA3', 'Gene', (147, 152)) ('inhibition', 'Var', (49, 59)) ('expression pattern', 'MPA', (97, 115)) 81131 24905014 Namely, our results suggest that NFAT1 and NFAT3 activation may repress the expression of PMCA2, PMCA3 and PMCA4 isoforms, especially the PMCA4b variant. ('variant', 'Var', (145, 152)) ('repress', 'NegReg', (64, 71)) ('NFAT', 'Gene', '307820', (33, 37)) ('NFAT1', 'Gene', '18019', (33, 38)) ('PMCA2', 'Gene', '24215', (90, 95)) ('NFAT', 'Gene', (33, 37)) ('NFAT', 'Gene', '307820', (43, 47)) ('PMCA2', 'Gene', (90, 95)) ('NFAT', 'Gene', (43, 47)) ('expression', 'MPA', (76, 86)) ('PMCA3', 'Gene', '29599', (97, 102)) ('PMCA4', 'Gene', '29600', (138, 143)) ('PMCA4', 'Gene', '29600', (107, 112)) ('PMCA4', 'Gene', (107, 112)) ('NFAT1', 'Gene', (33, 38)) ('PMCA3', 'Gene', (97, 102)) ('PMCA4', 'Gene', (138, 143)) 81141 24905014 For example, alternative splicing affects the formation of the exocytotic membrane fusion complex SNARE (SNAP (Soluble NSF Attachment Protein) Receptor) by altering the expression profile the following elements of this complex: synaptosomal-associated protein 25 (SNAP25), syntaxin 1 and synaptobrevin 1. ('synaptobrevin 1', 'Gene', (288, 303)) ('SNARE', 'Gene', (98, 103)) ('synaptosomal-associated protein 25', 'Gene', '25012', (228, 262)) ('synaptobrevin 1', 'Gene', '25624', (288, 303)) ('SNAP25', 'Gene', (264, 270)) ('alternative splicing', 'Var', (13, 33)) ('SNAP25', 'Gene', '25012', (264, 270)) ('expression', 'MPA', (169, 179)) ('synaptosomal-associated protein 25', 'Gene', (228, 262)) ('altering', 'Reg', (156, 164)) ('affects', 'Reg', (34, 41)) 81151 24905014 Distortion of this relationship results in disturbed calcium homeostasis and disturbed catecholamine secretion in pheochromocytoma. ('pheochromocytoma', 'Disease', 'MESH:D010673', (114, 130)) ('calcium', 'Chemical', 'MESH:D002118', (53, 60)) ('catecholamine', 'Chemical', 'MESH:D002395', (87, 100)) ('catecholamine secretion', 'MPA', (87, 110)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (114, 130)) ('results', 'Reg', (32, 39)) ('Distortion', 'Var', (0, 10)) ('calcium homeostasis', 'MPA', (53, 72)) ('disturbed', 'Reg', (43, 52)) ('disturbed', 'Reg', (77, 86)) ('pheochromocytoma', 'Disease', (114, 130)) 81161 24905014 On the other hand, this might also suggest binding of the NFAT-HDAC complexes to the intronic splicing regulatory sites, preceding the excluded exon 7 and exon 8 but not to the intronic fragments of the gene preceding the included exon 9, resulting in the removal of exons 7 and 8 of the PMCA2 transcript leading to the formation of PMCA2x variant. ('NFAT', 'Gene', (58, 62)) ('binding', 'Interaction', (43, 50)) ('PMCA2', 'Gene', '24215', (288, 293)) ('PMCA2', 'Gene', '24215', (333, 338)) ('exons 7', 'MPA', (267, 274)) ('removal', 'NegReg', (256, 263)) ('NFAT', 'Gene', '307820', (58, 62)) ('variant', 'Var', (340, 347)) ('PMCA2', 'Gene', (288, 293)) ('PMCA2', 'Gene', (333, 338)) 81162 24905014 The involvement of NFAT in this kind of splicing regulation is highly probable regarding our bioinformatic analysis showing numerous NFAT-specific motifs before exons 7 and 8, but not before exon 9 of the PMCA2 transcript. ('motifs', 'Var', (147, 153)) ('NFAT', 'Gene', '307820', (19, 23)) ('PMCA2', 'Gene', '24215', (205, 210)) ('NFAT', 'Gene', '307820', (133, 137)) ('NFAT', 'Gene', (19, 23)) ('NFAT', 'Gene', (133, 137)) ('PMCA2', 'Gene', (205, 210)) 81164 24905014 It is worth to underline that the splicing recognition sites in the intronic/exonic regions of PMCAs genes were enriched in NFAT binding motifs (5'-GGAAA-3' or 5'-TTTCCC-3'). ('NFAT', 'Gene', '307820', (124, 128)) ("5'-GGAAA-3'", 'Var', (145, 156)) ('PMCAs', 'Gene', (95, 100)) ('NFAT', 'Gene', (124, 128)) 81171 24905014 PMCA2x and PMCA3x variants exhibit the highest efficiency in calcium removal and the highest affinity for calcium ions among PMCA isoforms, thus it is obvious that a decrease in the content of one of these forms might be compensated by an up-regulation of the other. ('PMCA2', 'Gene', (0, 5)) ('variants', 'Var', (18, 26)) ('calcium removal', 'MPA', (61, 76)) ('up-regulation', 'PosReg', (239, 252)) ('PMCA2', 'Gene', '24215', (0, 5)) ('PMCA3', 'Gene', '29599', (11, 16)) ('calcium', 'Chemical', 'MESH:D002118', (61, 68)) ('calcium', 'Chemical', 'MESH:D002118', (106, 113)) ('PMCA3', 'Gene', (11, 16)) ('affinity for', 'Interaction', (93, 105)) ('decrease', 'NegReg', (166, 174)) 81172 24905014 Such modification in PMCA composition probably serves to retrieve the affected calcium signaling and to rescue a disturbed secretory response in PC12 cells. ('modification', 'Var', (5, 17)) ('rescue', 'PosReg', (104, 110)) ('calcium signaling', 'MPA', (79, 96)) ('disturbed secretory response', 'MPA', (113, 141)) ('retrieve', 'PosReg', (57, 65)) ('calcium', 'Chemical', 'MESH:D002118', (79, 86)) ('PC12', 'CellLine', 'CVCL:0481', (145, 149)) 81175 24905014 Interestingly, the expression of the PMCA4a variant was increased upon NFAT inhibition. ('expression', 'MPA', (19, 29)) ('PMCA4', 'Gene', (37, 42)) ('PMCA4', 'Gene', '29600', (37, 42)) ('NFAT', 'Gene', '307820', (71, 75)) ('increased', 'PosReg', (56, 65)) ('variant', 'Var', (44, 51)) ('NFAT', 'Gene', (71, 75)) 81178 24905014 Summarizing, all changes in PMCA composition were accompanied by activation of endogenous NFAT1 and NFAT3 suggesting their involvement in the control of PMCA expression pattern and, via interaction with HDAC4, in the control of alternative splicing of the PMCA2x variant. ('involvement', 'Reg', (123, 134)) ('NFAT1', 'Gene', (90, 95)) ('PMCA2', 'Gene', '24215', (256, 261)) ('expression pattern', 'MPA', (158, 176)) ('NFAT', 'Gene', (90, 94)) ('PMCA', 'Protein', (153, 157)) ('PMCA2', 'Gene', (256, 261)) ('activation', 'PosReg', (65, 75)) ('NFAT', 'Gene', '307820', (90, 94)) ('alternative splicing', 'MPA', (228, 248)) ('changes', 'Var', (17, 24)) ('PMCA composition', 'MPA', (28, 44)) ('interaction', 'Interaction', (186, 197)) ('control', 'MPA', (142, 149)) ('NFAT1', 'Gene', '18019', (90, 95)) ('HDAC4', 'Gene', (203, 208)) ('NFAT', 'Gene', (100, 104)) ('HDAC4', 'Gene', '363287', (203, 208)) ('endogenous', 'MPA', (79, 89)) ('NFAT', 'Gene', '307820', (100, 104)) 81198 24591775 The 68Ga-DOTA-peptides bind to the somatostatin receptors (SSTRs) overexpressed on NETs cells. ('68Ga-DOTA-peptides', 'Var', (4, 22)) ('SSTRs', 'Gene', (59, 64)) ('DOTA', 'Chemical', 'MESH:C071349', (9, 13)) ('bind', 'Interaction', (23, 27)) ('NETs', 'Phenotype', 'HP:0100634', (83, 87)) 81201 24591775 Three major 68Ga-DOTA-peptides are currently available for imaging:68Ga-DOTA-Phe1-Tyr3-Octreotide (TOC), 68Ga-DOTA-NaI3-Octreotide (NOC), and 68Ga-DOTA-Tyr3-Octreotate (TATE). ('NOC', 'Chemical', '-', (132, 135)) ('DOTA', 'Chemical', 'MESH:C071349', (147, 151)) ('DOTA', 'Chemical', 'MESH:C071349', (110, 114)) ('68Ga-DOTA-NaI3-Octreotide', 'Var', (105, 130)) ('TOC', 'Chemical', '-', (99, 102)) ('-DOTA-Tyr3-Octreotate', 'Chemical', '-', (146, 167)) ('68Ga-DOTA-Tyr3-Octreotate', 'Var', (142, 167)) ('DOTA', 'Chemical', 'MESH:C071349', (72, 76)) ('DOTA', 'Chemical', 'MESH:C071349', (17, 21)) 81210 24591775 Fourthly, 68Ga-DOTA-petides have about ten-fold higher affinity for SSTRs as compared to 111In-Octreotide. ('affinity', 'Interaction', (55, 63)) ('SSTRs', 'Protein', (68, 73)) ('111In-Octreotide', 'Chemical', 'MESH:C094279', (89, 105)) ('DOTA', 'Chemical', 'MESH:C071349', (15, 19)) ('higher', 'PosReg', (48, 54)) ('68Ga-DOTA-petides', 'Var', (10, 27)) 81211 24591775 Also, the 68Ga-DOTA-NOC has broad spectrum affinity for SSTRs (SSTR2, 3, and 5) as compared to 111In-Octreotide (SSTR2 only). ('111In-Octreotide', 'Chemical', 'MESH:C094279', (95, 111)) ('NOC', 'Chemical', '-', (20, 23)) ('SSTR2', 'Gene', '6752', (113, 118)) ('68Ga-DOTA-NOC', 'Var', (10, 23)) ('SSTR2', 'Gene', '6752', (63, 68)) ('DOTA', 'Chemical', 'MESH:C071349', (15, 19)) ('SSTR2', 'Gene', (113, 118)) ('SSTR2', 'Gene', (63, 68)) 81212 24591775 The long half-life of the mother radionuclide 68Ge (270.8 days) makes it possible to use the generator for approximately 6-12 months depending on use and can be eluted as early as every 3 h. 68Ga (T1/2 = 68 min) is a positron emitter with 89% positron emission and negligible gamma emission (3.2%). ('68Ga', 'Var', (191, 195)) ('positron emission', 'MPA', (243, 260)) ('gamma emission', 'MPA', (276, 290)) ('radionuclide', 'Chemical', 'MESH:D011868', (33, 45)) 81228 24591775 The pooled sensitivity and specificity of 68Ga-DOTA peptide PET or PET/CT in detecting NETs were 93% (95% confidence interval (CI): 91-95%) and 91% (95% CI: 82-97%), respectively, on per patient-based analysis. ('68Ga-DOTA peptide', 'Var', (42, 59)) ('NETs', 'Disease', (87, 91)) ('patient', 'Species', '9606', (187, 194)) ('NETs', 'Phenotype', 'HP:0100634', (87, 91)) ('DOTA', 'Chemical', 'MESH:C071349', (47, 51)) 81239 24591775 Diagnostic performance of 68Ga-DOTA-NOC PET/CT was superior in patients with equivocal CECT findings than that in patients with negative CECT (P = 0.010). ('NOC', 'Chemical', '-', (36, 39)) ('68Ga-DOTA-NOC', 'Var', (26, 39)) ('DOTA', 'Chemical', 'MESH:C071349', (31, 35)) ('CECT', 'Disease', (87, 91)) ('patients', 'Species', '9606', (63, 71)) ('patients', 'Species', '9606', (114, 122)) ('superior', 'PosReg', (51, 59)) 81240 24591775 Frilling et al., have also demonstrated the superiority of 68Ga-DOTA-TOC PET/CT over conventional imaging (CT/MRI) in GEP-NETs. ('NETs', 'Phenotype', 'HP:0100634', (122, 126)) ('68Ga-DOTA-TOC', 'Var', (59, 72)) ('TOC', 'Chemical', '-', (69, 72)) ('DOTA', 'Chemical', 'MESH:C071349', (64, 68)) ('GEP-NETs', 'Disease', (118, 126)) 81266 24591775 The prognostic ability of 68Ga-DOTA-peptides PET/CT results from its inverse association with cellular proliferation. ('inverse', 'NegReg', (69, 76)) ('DOTA', 'Chemical', 'MESH:C071349', (31, 35)) ('cellular proliferation', 'CPA', (94, 116)) ('68Ga-DOTA-peptides', 'Var', (26, 44)) 81269 24591775 In our analysis of 40 patients with NETs, we found SUVmax on 68Ga-DOTA-NOC PET/CT and histopathological grades to be significantly associated with progression free survival on multivariate analysis. ('progression free survival', 'CPA', (147, 172)) ('DOTA', 'Chemical', 'MESH:C071349', (66, 70)) ('NOC', 'Chemical', '-', (71, 74)) ('NETs', 'Phenotype', 'HP:0100634', (36, 40)) ('patients', 'Species', '9606', (22, 30)) ('associated with', 'Reg', (131, 146)) ('SUVmax', 'Var', (51, 57)) 81286 24591775 It appears that different uptake patterns on 68Ga-DOTA-TOC PET/CT and 18F-FDG PET/CT and the ratio of SUVmax may be helpful in differentiating between typical and atypical carcinoids. ('typical', 'Disease', (151, 158)) ('carcinoid', 'Phenotype', 'HP:0100570', (172, 181)) ('carcinoids', 'Phenotype', 'HP:0100570', (172, 182)) ('uptake', 'MPA', (26, 32)) ('18F-FDG', 'Chemical', 'MESH:D019788', (70, 77)) ('TOC', 'Chemical', '-', (55, 58)) ('DOTA', 'Chemical', 'MESH:C071349', (50, 54)) ('68Ga-DOTA-TOC', 'Var', (45, 58)) 81335 24591775 Win et al., compared 68Ga-DOTA-TATE PET with 123I-MIBG in five patients with pheochromocytoma and showed that 68Ga-DOTA-TATE PET showed more lesions, with higher uptake and better resolution. ('uptake', 'MPA', (162, 168)) ('68Ga-DOTA-TATE', 'Var', (110, 124)) ('pheochromocytoma', 'Disease', (77, 93)) ('DOTA', 'Chemical', 'MESH:C071349', (115, 119)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (77, 93)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (77, 93)) ('123I-MIBG', 'Chemical', '-', (45, 54)) ('patients', 'Species', '9606', (63, 71)) ('higher', 'PosReg', (155, 161)) ('DOTA', 'Chemical', 'MESH:C071349', (26, 30)) ('resolution', 'MPA', (180, 190)) 81338 24591775 In the largest study till date, Naswa et al., from our center showed the superiority of 68Ga-DOTA-NOC PET/CT over 131I-MIBG in 35 patients with pheochromocytoma/paraganglioma. ('pheochromocytoma/paraganglioma', 'Disease', (144, 174)) ('68Ga-DOTA-NOC', 'Var', (88, 101)) ('paraganglioma', 'Phenotype', 'HP:0002668', (161, 174)) ('DOTA', 'Chemical', 'MESH:C071349', (93, 97)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (144, 174)) ('131I-MIBG', 'Chemical', '-', (114, 123)) ('NOC', 'Chemical', '-', (98, 101)) ('patients', 'Species', '9606', (130, 138)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (144, 160)) 81342 24591775 A recent study by Sharma et al., from our center has shown the superiority of 68Ga-DOTA-NOC PET/CT over conventional imaging (CT/MRI) and 131I-MIBG in head and neck paraganglioma. ('neck paraganglioma', 'Disease', (160, 178)) ('68Ga-DOTA-NOC', 'Var', (78, 91)) ('paraganglioma', 'Phenotype', 'HP:0002668', (165, 178)) ('DOTA', 'Chemical', 'MESH:C071349', (83, 87)) ('131I-MIBG', 'Chemical', '-', (138, 147)) ('NOC', 'Chemical', '-', (88, 91)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (160, 178)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (151, 178)) ('131I-MIBG', 'Var', (138, 147)) 81346 24591775 These include MEN syndromes (1 and 2), familial paraganglioma syndrome, von-Hippel Lindau (VHL) syndrome, succinate dehydrogenase (SDH) mutation, and neurofibromatosis type 1. ('familial paraganglioma syndrome', 'Disease', 'MESH:D010235', (39, 70)) ('succinate dehydrogenase', 'Gene', '6390', (106, 129)) ('succinate dehydrogenase', 'Gene', (106, 129)) ('mutation', 'Var', (136, 144)) ('MEN syndromes', 'Disease', (14, 27)) ('SDH', 'Gene', '6390', (131, 134)) ('neurofibromatosis type 1', 'Gene', '4763', (150, 174)) ('MEN', 'Species', '9606', (14, 17)) ('paraganglioma', 'Phenotype', 'HP:0002668', (48, 61)) ('von-Hippel Lindau (VHL) syndrome', 'Disease', 'MESH:D006623', (72, 104)) ('familial paraganglioma syndrome', 'Disease', (39, 70)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (150, 167)) ('SDH', 'Gene', (131, 134)) ('neurofibromatosis type 1', 'Gene', (150, 174)) 81357 24591775 It has also been employed for locating the primary tumor in patients with tumor induced osteomalacia and ectopic adrenocorticotropic hormone (ACTH) producing tumors. ('tumors', 'Phenotype', 'HP:0002664', (158, 164)) ('ectopic', 'Var', (105, 112)) ('adrenocorticotropic hormone', 'Gene', '5443', (113, 140)) ('osteomalacia', 'Disease', 'MESH:D010018', (88, 100)) ('tumor', 'Disease', (74, 79)) ('primary tumor', 'Disease', (43, 56)) ('tumor', 'Phenotype', 'HP:0002664', (158, 163)) ('tumors', 'Disease', (158, 164)) ('tumor', 'Disease', 'MESH:D009369', (74, 79)) ('patients', 'Species', '9606', (60, 68)) ('osteomalacia', 'Phenotype', 'HP:0002749', (88, 100)) ('tumor', 'Disease', (51, 56)) ('tumor', 'Disease', 'MESH:D009369', (51, 56)) ('tumors', 'Disease', 'MESH:D009369', (158, 164)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('adrenocorticotropic hormone', 'Gene', (113, 140)) ('tumor', 'Disease', (158, 163)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('tumor', 'Disease', 'MESH:D009369', (158, 163)) ('osteomalacia', 'Disease', (88, 100)) ('primary tumor', 'Disease', 'MESH:D009369', (43, 56)) 81417 27900521 However, 18F-FDOPA might be falsely negative in these tumors, especially those related to mutations in succinate dehydrogenase genes (SDHx). ('succinate', 'Chemical', 'MESH:D019802', (103, 112)) ('mutations', 'Var', (90, 99)) ('SDH', 'Gene', (134, 137)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (9, 18)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) ('tumors', 'Disease', (54, 60)) ('tumors', 'Phenotype', 'HP:0002664', (54, 60)) ('tumors', 'Disease', 'MESH:D009369', (54, 60)) ('SDH', 'Gene', '6390', (134, 137)) 81423 27900521 The SDHx mutated samples exhibited a significant decrease in mRNA expression of LAT3 when compared to sporadic PPGLs (P = 0.042). ('SDH', 'Gene', '6390', (4, 7)) ('LAT3', 'Gene', (80, 84)) ('mRNA expression', 'MPA', (61, 76)) ('LAT3', 'Gene', '8501', (80, 84)) ('mutated', 'Var', (9, 16)) ('SDH', 'Gene', (4, 7)) ('decrease', 'NegReg', (49, 57)) ('PPGLs', 'Chemical', '-', (111, 116)) 81434 27900521 Before 2000, the hereditary causes of PPGL were limited to mutations of the NF1, RET, and VHL genes. ('VHL', 'Gene', '7428', (90, 93)) ('RET', 'Gene', (81, 84)) ('NF1', 'Gene', '4763', (76, 79)) ('PPGL', 'Disease', (38, 42)) ('RET', 'Gene', '5979', (81, 84)) ('mutations', 'Var', (59, 68)) ('PPGL', 'Chemical', '-', (38, 42)) ('VHL', 'Gene', (90, 93)) ('NF1', 'Gene', (76, 79)) 81435 27900521 Since then, different genetic mutations have been described, among which, the mutations of the SDH subunits genes (collectively named SDHx) are the most common. ('SDH', 'Gene', (134, 137)) ('mutations', 'Var', (78, 87)) ('SDH', 'Gene', '6390', (95, 98)) ('SDH', 'Gene', (95, 98)) ('SDH', 'Gene', '6390', (134, 137)) 81436 27900521 It is estimated that approximately 40% of patients with PPGL harbor germline mutations of one of the susceptibility genes. ('PPGL', 'Gene', (56, 60)) ('patients', 'Species', '9606', (42, 50)) ('germline mutations', 'Var', (68, 86)) ('PPGL', 'Chemical', '-', (56, 60)) 81437 27900521 In patients with germline SDHx mutations, tumorigenesis requires a second hit mutation with biallelic inactivation of these genes, leading to a disruption of the tricarboxylic acid (TCA) cycle. ('mutations', 'Var', (31, 40)) ('tumor', 'Disease', (42, 47)) ('mutation', 'Var', (78, 86)) ('TCA', 'Chemical', 'MESH:D014233', (182, 185)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) ('patients', 'Species', '9606', (3, 11)) ('SDH', 'Gene', '6390', (26, 29)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (162, 180)) ('tumor', 'Disease', 'MESH:D009369', (42, 47)) ('disruption', 'Reg', (144, 154)) ('SDH', 'Gene', (26, 29)) 81439 27900521 Interestingly, although SDHD and SDHB mutated tumors have common metabolic characteristics, they are distinguished by two main points. ('mutated', 'Var', (38, 45)) ('SDHB', 'Gene', '6390', (33, 37)) ('tumor', 'Phenotype', 'HP:0002664', (46, 51)) ('tumors', 'Phenotype', 'HP:0002664', (46, 52)) ('SDHB', 'Gene', (33, 37)) ('SDHD', 'Gene', (24, 28)) ('SDHD', 'Gene', '6392', (24, 28)) ('tumors', 'Disease', (46, 52)) ('tumors', 'Disease', 'MESH:D009369', (46, 52)) 81443 27900521 In recent years, the results obtained with 18F-FDOPA PET imaging have further supported this fact, showing intra-patient tumor heterogeneity in SDHx mutated patients. ('patient', 'Species', '9606', (113, 120)) ('SDH', 'Gene', '6390', (144, 147)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('patient', 'Species', '9606', (157, 164)) ('mutated', 'Var', (149, 156)) ('tumor', 'Disease', (121, 126)) ('SDH', 'Gene', (144, 147)) ('patients', 'Species', '9606', (157, 165)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (43, 52)) ('tumor', 'Disease', 'MESH:D009369', (121, 126)) 81460 27900521 For mRNA expression, normalization multiple housekeeping genes were tested: HPRT, ribosomal protein, large, P0 (RPLP0), rplp27, beta-actin, and OAZ1. ('HPRT', 'Gene', (76, 80)) ('OAZ1', 'Gene', (144, 148)) ('RPLP0', 'Gene', '6175', (112, 117)) ('rplp27', 'Var', (120, 126)) ('ribosomal protein, large, P0', 'Gene', '6175', (82, 110)) ('HPRT', 'Gene', '3251', (76, 80)) ('OAZ1', 'Gene', '4946', (144, 148)) ('RPLP0', 'Gene', (112, 117)) 81472 27900521 Interestingly, 18F-FDOPA positive SDHx mutated samples exhibited a decreased expression of LAT3 compared to sporadic tumors (P = 0.042) and there was also a statistical trend toward decreased CD98hc (P = 0.147) and LAT4 (P = 0.012) levels. ('expression', 'MPA', (77, 87)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('LAT4', 'Gene', '124935', (215, 219)) ('decreased', 'NegReg', (182, 191)) ('tumors', 'Phenotype', 'HP:0002664', (117, 123)) ('SDH', 'Gene', (34, 37)) ('LAT4', 'Gene', (215, 219)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (15, 24)) ('LAT3', 'Gene', (91, 95)) ('tumors', 'Disease', (117, 123)) ('mutated', 'Var', (39, 46)) ('tumors', 'Disease', 'MESH:D009369', (117, 123)) ('CD98hc', 'Gene', '6520', (192, 198)) ('LAT3', 'Gene', '8501', (91, 95)) ('decreased', 'NegReg', (67, 76)) ('CD98hc', 'Gene', (192, 198)) ('SDH', 'Gene', '6390', (34, 37)) 81475 27900521 LAT1 expression was detected in 15 out of 16 (93.75%) SDHx mutated tumors (Table 1, last two rows, patients SDHx 1 to 6, 16 samples in total, NA indicates samples for which no tissues were available to perform staining). ('detected', 'Reg', (20, 28)) ('SDH', 'Gene', '6390', (108, 111)) ('tumors', 'Disease', 'MESH:D009369', (67, 73)) ('tumor', 'Phenotype', 'HP:0002664', (67, 72)) ('patients', 'Species', '9606', (99, 107)) ('SDH', 'Gene', '6390', (54, 57)) ('SDH', 'Gene', (108, 111)) ('tumors', 'Phenotype', 'HP:0002664', (67, 73)) ('LAT1', 'Gene', (0, 4)) ('LAT1', 'Gene', '8140', (0, 4)) ('tumors', 'Disease', (67, 73)) ('mutated', 'Var', (59, 66)) ('SDH', 'Gene', (54, 57)) 81498 27900521 Nonetheless, we found that 6/9 (66.66%) tumors positive for 18F-FDOPA showed concordant elevated amounts of LAT1 and CD98hc. ('amounts', 'MPA', (97, 104)) ('LAT1', 'Gene', '8140', (108, 112)) ('CD98hc', 'Gene', (117, 123)) ('LAT1', 'Gene', (108, 112)) ('tumors', 'Phenotype', 'HP:0002664', (40, 46)) ('tumors', 'Disease', 'MESH:D009369', (40, 46)) ('18F-FDOPA', 'Var', (60, 69)) ('elevated', 'PosReg', (88, 96)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (60, 69)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('CD98hc', 'Gene', '6520', (117, 123)) ('tumors', 'Disease', (40, 46)) 81517 27900521 LAT1 also transports His, Met, Val, Leu, Ile, Phe, Tyr, and Trp whereas LAT2 transports Gly, Ala, Met, Val, Leu, Cys, Ile, Ser, Asn, Gln, Thr, Phe, Tyr, and Trp. ('Gly', 'Chemical', 'MESH:D005998', (88, 91)) ('Ala', 'Chemical', 'MESH:D000409', (93, 96)) ('Leu', 'Chemical', 'MESH:D007930', (108, 111)) ('Ile', 'Chemical', 'MESH:D007532', (41, 44)) ('Leu', 'Chemical', 'MESH:D007930', (36, 39)) ('Asn', 'Chemical', 'MESH:D001216', (128, 131)) ('Tyr', 'Chemical', 'MESH:D014443', (148, 151)) ('LAT2', 'Gene', (72, 76)) ('Thr', 'MPA', (138, 141)) ('Ile', 'MPA', (118, 121)) ('Ser', 'Chemical', 'MESH:D012694', (123, 126)) ('Phe', 'Chemical', 'MESH:D010649', (143, 146)) ('Tyr', 'Chemical', 'MESH:D014443', (51, 54)) ('Cys', 'Chemical', 'MESH:D003545', (113, 116)) ('Ile', 'Chemical', 'MESH:D007532', (118, 121)) ('Phe', 'Chemical', 'MESH:D010649', (46, 49)) ('Gln', 'Chemical', 'MESH:D005973', (133, 136)) ('Thr', 'Chemical', 'MESH:D013912', (138, 141)) ('Cys', 'MPA', (113, 116)) ('Gln', 'MPA', (133, 136)) ('Val', 'Chemical', 'MESH:D014633', (31, 34)) ('Met', 'MPA', (26, 29)) ('Val', 'Chemical', 'MESH:D014633', (103, 106)) ('Trp', 'Chemical', 'MESH:D014364', (157, 160)) ('Val', 'MPA', (31, 34)) ('Leu', 'Var', (108, 111)) ('Trp', 'Chemical', 'MESH:D014364', (60, 63)) ('Ile', 'MPA', (41, 44)) ('Leu', 'Var', (36, 39)) ('LAT2', 'Gene', '7462', (72, 76)) ('LAT1', 'Gene', (0, 4)) ('LAT1', 'Gene', '8140', (0, 4)) 81534 27900521 It could be possible that the second hit mutation occurs in early developmental NC progenitors with low expression of LATs due to a compacted chromatin structure. ('mutation', 'Var', (41, 49)) ('LAT', 'Gene', (118, 121)) ('LAT', 'Gene', '27040', (118, 121)) 81545 27900521 Based on recent work, a possibility could imply that certain SDHx tumors display epigenetic regulation that reduces the activity or expression of LAT. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('LAT', 'Gene', '27040', (146, 149)) ('SDHx tumors', 'Disease', 'MESH:D009369', (61, 72)) ('SDHx tumors', 'Disease', (61, 72)) ('tumors', 'Phenotype', 'HP:0002664', (66, 72)) ('reduces', 'NegReg', (108, 115)) ('expression', 'MPA', (132, 142)) ('epigenetic regulation', 'Var', (81, 102)) ('activity', 'MPA', (120, 128)) ('LAT', 'Gene', (146, 149)) 81663 32617048 Although it is strongly advised to defer surgeries during the COVID-19 pandemic period, the need for surgery not only arises for COVID-19 positive or suspected patients but also for asymptomatic and PCR negative patients in emergent or semi-emergent conditions. ('COVID-19', 'Disease', (62, 70)) ('patients', 'Species', '9606', (160, 168)) ('COVID-19', 'Disease', 'MESH:C000657245', (129, 137)) ('patients', 'Species', '9606', (212, 220)) ('positive', 'Var', (138, 146)) ('COVID-19', 'Disease', (129, 137)) ('COVID-19', 'Disease', 'MESH:C000657245', (62, 70)) 81802 31981788 Immunohistochemical staining revealed cytokeratin (AE1/AE3), CK19, CD56, synaptophysin, chromogranin, and c-kit positivity and CK7 and CK20 negativity of the tumour cells. ('c-kit', 'Gene', (106, 111)) ('CD56', 'Gene', (67, 71)) ('tumour', 'Phenotype', 'HP:0002664', (158, 164)) ('tumour', 'Disease', 'MESH:D009369', (158, 164)) ('synaptophysin', 'Chemical', 'MESH:D016708', (73, 86)) ('CK20', 'Gene', (135, 139)) ('CK20', 'Gene', '54474', (135, 139)) ('CK19', 'Gene', (61, 65)) ('CK7', 'Gene', (127, 130)) ('tumour', 'Disease', (158, 164)) ('CD56', 'Gene', '4684', (67, 71)) ('CK7', 'Gene', '3855', (127, 130)) ('CK19', 'Gene', '3880', (61, 65)) ('positivity', 'Var', (112, 122)) ('c-kit', 'Gene', '3815', (106, 111)) 81814 31981788 During the past two decades, MIT has been proposed as an alternative to conventional OT via MS. MIT guarantees oncological outcomes and is less invasive for patients with TETs. ('TETs', 'Disease', (171, 175)) ('patients', 'Species', '9606', (157, 165)) ('TETs', 'Disease', 'MESH:C536905', (171, 175)) ('MIT', 'Var', (96, 99)) ('oncological outcomes', 'CPA', (111, 131)) 81843 31137729 Genetic analysis of seven patients revealed that three harbored succinate dehydrogenase subunit B/D gene (SDHB/D) mutations. ('succinate dehydrogenase subunit B', 'Gene', (64, 97)) ('mutations', 'Var', (114, 123)) ('SDHB', 'Gene', '6390', (106, 110)) ('patients', 'Species', '9606', (26, 34)) ('SDHB', 'Gene', (106, 110)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (64, 97)) 81854 31137729 Currently the presence of inactivating mutations of the succinate dehydrogenase subunit B (SDHB) gene is strongly associated with the development of metastatic PCs and PGLs. ('presence', 'Var', (14, 22)) ('PGLs', 'Disease', (168, 172)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (56, 89)) ('SDHB', 'Gene', '6390', (91, 95)) ('PGLs', 'Phenotype', 'HP:0002668', (168, 172)) ('associated with', 'Reg', (114, 129)) ('SDHB', 'Gene', (91, 95)) ('succinate dehydrogenase subunit B', 'Gene', (56, 89)) ('PCs', 'Phenotype', 'HP:0002666', (160, 163)) ('inactivating mutations', 'Var', (26, 48)) ('metastatic PCs', 'Disease', (149, 163)) 81874 31137729 Out of seven patients tested for germline mutations, two had SDHB mutations and one had a SDHD mutation (Table 1). ('mutations', 'Var', (66, 75)) ('SDHD', 'Gene', (90, 94)) ('SDHD', 'Gene', '6392', (90, 94)) ('patients', 'Species', '9606', (13, 21)) ('SDHB', 'Gene', '6390', (61, 65)) ('SDHB', 'Gene', (61, 65)) 81875 31137729 One patient with a SDHB mutation had a functional left PC, secreting normetanephrine and dopamine. ('dopamine', 'Chemical', 'MESH:D004298', (89, 97)) ('SDHB', 'Gene', '6390', (19, 23)) ('patient', 'Species', '9606', (4, 11)) ('SDHB', 'Gene', (19, 23)) ('mutation', 'Var', (24, 32)) ('normetanephrine', 'Chemical', 'MESH:D009647', (69, 84)) 81878 31137729 The patient with the SDHD mutation was a female with a functional bladder PGL secreting dopamine and multiple PGLs in the cervical spine, the aorto-pulmonary window and the carotid. ('secreting dopamine', 'MPA', (78, 96)) ('mutation', 'Var', (26, 34)) ('functional bladder', 'Phenotype', 'HP:0000009', (55, 73)) ('aorto-pulmonary window', 'Phenotype', 'HP:0011604', (142, 164)) ('patient', 'Species', '9606', (4, 11)) ('SDHD', 'Gene', '6392', (21, 25)) ('dopamine', 'Chemical', 'MESH:D004298', (88, 96)) ('PGLs', 'Phenotype', 'HP:0002668', (110, 114)) ('SDHD', 'Gene', (21, 25)) 81880 31137729 Three patients exhibited SD until the last follow-up and no further treatment was needed: the first was treated with 131I-MIBG and the two others with surgical resection of the primary and metastases. ('metastases', 'Disease', (189, 199)) ('SD', 'Disease', 'MESH:D029461', (25, 27)) ('metastases', 'Disease', 'MESH:D009362', (189, 199)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (117, 126)) ('patients', 'Species', '9606', (6, 14)) ('131I-MIBG', 'Var', (117, 126)) 81896 31137729 In all cases, patients with IL-6 ectopic secretion presented with pyrexia resistant to any treatment, which resolved after surgical debulking of the tumor (Table 4). ('pyrexia', 'Disease', (66, 73)) ('IL-6', 'Gene', '3569', (28, 32)) ('tumor', 'Disease', 'MESH:D009369', (149, 154)) ('ectopic secretion', 'Var', (33, 50)) ('tumor', 'Phenotype', 'HP:0002664', (149, 154)) ('pyrexia', 'Disease', 'MESH:D005334', (66, 73)) ('tumor', 'Disease', (149, 154)) ('pyrexia', 'Phenotype', 'HP:0001945', (66, 73)) ('IL-6', 'Gene', (28, 32)) ('patients', 'Species', '9606', (14, 22)) 81901 31137729 The risk of metastases was associated with an age at diagnosis <=35 years (hazard ratio [HR] 2.74, [95% Confidence Interval (CI) 1.19-6.35), tumor size >=6.0 cm (HR 2.43, 95% CI 1.06-5.56), extra-adrenal location (HR 2.73, 95% CI 1.10-7.40), and tumor producing only normetamephrine (HR 2.96, 95% CI (1.30-6.76)). ('tumor', 'Disease', 'MESH:D009369', (141, 146)) ('normetamephrine', 'Chemical', '-', (267, 282)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('metastases', 'Disease', (12, 22)) ('tumor', 'Disease', 'MESH:D009369', (246, 251)) ('tumor', 'Disease', (141, 146)) ('tumor', 'Phenotype', 'HP:0002664', (246, 251)) ('metastases', 'Disease', 'MESH:D009362', (12, 22)) ('>=6.0', 'Var', (152, 157)) ('tumor', 'Disease', (246, 251)) 81911 31137729 Data in the literature have shown that 131I-MIBG and 18F-FDG-PET exhibit higher sensitivity than octreoscan. ('131I-MIBG', 'Var', (39, 48)) ('sensitivity', 'MPA', (80, 91)) ('18F-FDG-PET', 'Var', (53, 64)) ('FDG', 'Chemical', 'MESH:D019788', (57, 60)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (39, 48)) 81917 31137729 Recent studies including patients with metastatic PCs/PGLs treated with 90Y-DOTATATE or 177Lu-DOTATATE have shown a mean progression free survival (PFS) (36% had PD and 50% SD) and OS of 39 and 61 months, respectively, compared to conventional 131I-MIBG treatment (mean PFS: 14 months and OS: 23 months). ('90Y-DOTATATE', 'Var', (72, 84)) ('PCs', 'Phenotype', 'HP:0002666', (50, 53)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (244, 253)) ('SD', 'Disease', 'MESH:D029461', (173, 175)) ('177Lu-DOTATATE', 'Var', (88, 102)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (88, 102)) ('patients', 'Species', '9606', (25, 33)) ('90Y-DOTATATE', 'Chemical', 'MESH:C539274', (72, 84)) ('PD', 'Disease', 'MESH:D010300', (162, 164)) ('PGLs', 'Phenotype', 'HP:0002668', (54, 58)) 81950 30943211 We collected high quality information about both pVHL mutations and interactors to investigate the association between patient phenotypes, mutated protein surface and impaired interactions. ('patient', 'Species', '9606', (119, 126)) ('pVHL', 'Gene', '7428', (49, 53)) ('pVHL', 'Gene', (49, 53)) ('mutations', 'Var', (54, 63)) ('interactions', 'Interaction', (176, 188)) 81954 30943211 We predict that disruption of pVHL association with certain interactors can trigger tumor transformation, inducing metabolism imbalance and ECM remodeling. ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('pVHL', 'Gene', (30, 34)) ('inducing', 'Reg', (106, 114)) ('disruption', 'Var', (16, 26)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('pVHL', 'Gene', '7428', (30, 34)) ('ECM remodeling', 'CPA', (140, 154)) ('tumor', 'Disease', (84, 89)) ('association', 'Interaction', (35, 46)) ('metabolism imbalance', 'MPA', (115, 135)) ('metabolism imbalance', 'Phenotype', 'HP:0001939', (115, 135)) ('imbalance', 'Phenotype', 'HP:0002172', (126, 135)) ('trigger', 'Reg', (76, 83)) 81957 30943211 Cancer is generally caused by a series of mutations accumulating over time in a healthy tissue, which becomes re-programmed to proliferate at the expense of the hosting organism. ('Cancer', 'Phenotype', 'HP:0002664', (0, 6)) ('Cancer', 'Disease', (0, 6)) ('Cancer', 'Disease', 'MESH:D009369', (0, 6)) ('caused by', 'Reg', (20, 29)) ('mutations', 'Var', (42, 51)) 81959 30943211 VHL mutations are known to cause a predictable series of events leading cancer in the kidneys and a few selected other tissues. ('cancer', 'Phenotype', 'HP:0002664', (72, 78)) ('cause', 'Reg', (27, 32)) ('VHL', 'Gene', (0, 3)) ('cancer in the kidneys', 'Phenotype', 'HP:0009726', (72, 93)) ('mutations', 'Var', (4, 13)) ('cancer', 'Disease', 'MESH:D009369', (72, 78)) ('VHL', 'Gene', '7428', (0, 3)) ('cancer', 'Disease', (72, 78)) 81960 30943211 This article describes a large-scale analysis to relate known VHL mutations to specific cancer pathways by looking at the molecular interactions. ('mutations', 'Var', (66, 75)) ('cancer', 'Disease', (88, 94)) ('cancer', 'Disease', 'MESH:D009369', (88, 94)) ('VHL', 'Gene', (62, 65)) ('interactions', 'Interaction', (132, 144)) ('cancer', 'Phenotype', 'HP:0002664', (88, 94)) ('VHL', 'Gene', '7428', (62, 65)) 81961 30943211 Different cancer types appear to be caused by mutations changing the surface of specific parts of the VHL protein. ('mutations', 'Var', (46, 55)) ('cancer', 'Phenotype', 'HP:0002664', (10, 16)) ('surface of', 'MPA', (69, 79)) ('caused by', 'Reg', (36, 45)) ('VHL', 'Gene', (102, 105)) ('VHL', 'Gene', '7428', (102, 105)) ('cancer', 'Disease', 'MESH:D009369', (10, 16)) ('cancer', 'Disease', (10, 16)) 81962 30943211 By looking at the VHL interactors involved, it is therefore possible to identify other candidate genes for mutations leading to very similar cancer types. ('VHL', 'Gene', '7428', (18, 21)) ('mutations', 'Var', (107, 116)) ('cancer', 'Phenotype', 'HP:0002664', (141, 147)) ('cancer', 'Disease', 'MESH:D009369', (141, 147)) ('VHL', 'Gene', (18, 21)) ('cancer', 'Disease', (141, 147)) 81967 30943211 VHL syndrome arises from pathogenic inactivation of the von Hippel-Lindau tumor suppressor gene located on chromosome three, which codes for the homonymous pVHL protein. ('von Hippel-Lindau tumor suppressor', 'Gene', (56, 90)) ('VHL syndrome', 'Disease', 'MESH:D006623', (0, 12)) ('von Hippel-Lindau tumor suppressor', 'Gene', '7428', (56, 90)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('pVHL', 'Gene', '7428', (156, 160)) ('pVHL', 'Gene', (156, 160)) ('VHL syndrome', 'Disease', (0, 12)) ('inactivation', 'Var', (36, 48)) 81972 30943211 Type 1 includes patients harboring either truncating mutations or deletions yielding a dysfunctional pVHL presenting a wide spectrum of different cancers but lacking pheochromocytoma. ('pheochromocytoma', 'Disease', (166, 182)) ('cancers', 'Disease', (146, 153)) ('cancers', 'Disease', 'MESH:D009369', (146, 153)) ('dysfunctional pVHL', 'Disease', (87, 105)) ('patients', 'Species', '9606', (16, 24)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (166, 182)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (166, 182)) ('truncating mutations', 'Var', (42, 62)) ('cancer', 'Phenotype', 'HP:0002664', (146, 152)) ('deletions', 'Var', (66, 75)) ('dysfunctional pVHL', 'Disease', 'MESH:D006331', (87, 105)) ('cancers', 'Phenotype', 'HP:0002664', (146, 153)) 81973 30943211 Type 2 is more genetically divergent, characterized by missense mutations and includes patients developing pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (107, 123)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (107, 123)) ('missense mutations', 'Var', (55, 73)) ('patients', 'Species', '9606', (87, 95)) ('pheochromocytoma', 'Disease', (107, 123)) 81985 30943211 Mutations predicted to impair specific pVHL functions were associated with the corresponding VHL phenotype, while a list of affected pathways was constructed for each phenotype. ('impair', 'NegReg', (23, 29)) ('VHL', 'Gene', (40, 43)) ('VHL', 'Gene', '7428', (93, 96)) ('VHL', 'Gene', '7428', (40, 43)) ('Mutations', 'Var', (0, 9)) ('pVHL', 'Gene', '7428', (39, 43)) ('pVHL', 'Gene', (39, 43)) ('VHL', 'Gene', (93, 96)) 81993 30943211 As the recently developed VHLdb database collects pVHL interactors and mutations, here we present an analysis of this data to shed light on pVHL functions. ('pVHL', 'Gene', (140, 144)) ('VHL', 'Gene', '7428', (51, 54)) ('VHL', 'Gene', '7428', (141, 144)) ('VHL', 'Gene', (26, 29)) ('pVHL', 'Gene', '7428', (50, 54)) ('VHL', 'Gene', '7428', (26, 29)) ('pVHL', 'Gene', (50, 54)) ('mutations', 'Var', (71, 80)) ('pVHL', 'Gene', '7428', (140, 144)) ('VHL', 'Gene', (51, 54)) ('VHL', 'Gene', (141, 144)) 81994 30943211 VHLdb missense mutations were mapped on the pVHL structure to highlight specific interaction surfaces. ('VHL', 'Gene', '7428', (45, 48)) ('missense mutations', 'Var', (6, 24)) ('pVHL', 'Gene', '7428', (44, 48)) ('VHL', 'Gene', (0, 3)) ('pVHL', 'Gene', (44, 48)) ('VHL', 'Gene', '7428', (0, 3)) ('VHL', 'Gene', (45, 48)) 81995 30943211 Deletions of vast pVHL regions were excluded as they yield a clearly dysfunctional protein. ('pVHL', 'Gene', (18, 22)) ('pVHL', 'Gene', '7428', (18, 22)) ('yield', 'Reg', (53, 58)) ('Deletions', 'Var', (0, 9)) 81997 30943211 Collectively, our analysis covers 59 pVHL interactors and 360 different mutations from 2,195 VHL patients described in 1,670 case reports from 156 scientific papers. ('mutations', 'Var', (72, 81)) ('VHL', 'Gene', '7428', (93, 96)) ('pVHL', 'Gene', '7428', (37, 41)) ('VHL', 'Gene', (38, 41)) ('pVHL', 'Gene', (37, 41)) ('VHL', 'Gene', (93, 96)) ('VHL', 'Gene', '7428', (38, 41)) ('patients', 'Species', '9606', (97, 105)) 81999 30943211 A consensus approach based on multiple pathogenicity and stability predictors was used to systematically explore the phenotypic impact of pVHL mutations. ('pVHL', 'Gene', (138, 142)) ('pVHL', 'Gene', '7428', (138, 142)) ('mutations', 'Var', (143, 152)) 82000 30943211 As pVHL mutations appear to indiscriminately affect the entire protein surface, we wondered whether some mutations were more frequent in patients. ('affect', 'Reg', (45, 51)) ('pVHL', 'Gene', '7428', (3, 7)) ('pVHL', 'Gene', (3, 7)) ('entire protein surface', 'MPA', (56, 78)) ('patients', 'Species', '9606', (137, 145)) ('mutations', 'Var', (8, 17)) 82002 30943211 7 different variants are described for Asn78, and localize in both alpha and beta pVHL domains (Fig 1 and S2 Table). ('variants', 'Var', (12, 20)) ('pVHL', 'Gene', '7428', (82, 86)) ('Asn78', 'Chemical', '-', (39, 44)) ('pVHL', 'Gene', (82, 86)) ('Asn78', 'Gene', (39, 44)) 82004 30943211 Residue-residue interaction network built from pVHL 3D-structure suggests that these mutations disrupt multiple interactions (S3 Table). ('mutations', 'Var', (85, 94)) ('pVHL', 'Gene', '7428', (47, 51)) ('disrupt', 'NegReg', (95, 102)) ('multiple', 'Pathway', (103, 111)) ('pVHL', 'Gene', (47, 51)) 82005 30943211 In particular, Arg167 is the most frequently mutated pVHL residue (366 patients), with the two main variants p.Arg167Trp and p.Arg167Gln. ('Arg167', 'Chemical', '-', (15, 21)) ('Arg167', 'Chemical', '-', (127, 133)) ('patients', 'Species', '9606', (71, 79)) ('p.Arg167Gln', 'Mutation', 'rs5030821', (125, 136)) ('p.Arg167Gln', 'Var', (125, 136)) ('Arg167', 'Var', (15, 21)) ('Arg167', 'Chemical', '-', (111, 117)) ('pVHL', 'Gene', '7428', (53, 57)) ('pVHL', 'Gene', (53, 57)) ('p.Arg167Trp', 'Mutation', 'rs5030820', (109, 120)) ('p.Arg167Trp', 'Var', (109, 120)) 82008 30943211 Arg167 forms electrostatic interactions with Glu160 and Asp126, playing a structural role in maintaining the correct alpha-domain fold. ('Asp126', 'Chemical', '-', (56, 62)) ('electrostatic', 'MPA', (13, 26)) ('Arg167', 'Var', (0, 6)) ('alpha-domain fold', 'MPA', (117, 134)) ('Arg167', 'Chemical', '-', (0, 6)) ('Glu160', 'Chemical', '-', (45, 51)) 82010 30943211 Patients harboring p.Asp167Trp are also found to develop epididymal/ovarian cystadenoma (1 occurrence), while presence of endolymphatic sac tumor is reported only for p.Asp167Gln (2 occurrences). ('p.Asp167Trp', 'SUBSTITUTION', 'None', (19, 30)) ('develop', 'PosReg', (49, 56)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('p.Asp167Trp', 'Var', (19, 30)) ('p.Asp167Gln', 'Var', (167, 178)) ('epididymal/ovarian cystadenoma', 'Disease', 'MESH:D003537', (57, 87)) ('p.Asp167Gln', 'Mutation', 'p.D167Q', (167, 178)) ('Patients', 'Species', '9606', (0, 8)) ('ovarian cystadenoma', 'Phenotype', 'HP:0012887', (68, 87)) ('endolymphatic sac tumor', 'Phenotype', 'HP:0030393', (122, 145)) ('endolymphatic sac tumor', 'Disease', (122, 145)) ('endolymphatic sac tumor', 'Disease', 'MESH:D036821', (122, 145)) ('epididymal/ovarian cystadenoma', 'Disease', (57, 87)) 82012 30943211 The p.Arg161Gln mutation destabilizes the interaction between pVHL and Elongin-C. ('Elongin-C', 'Gene', (71, 80)) ('interaction', 'Interaction', (42, 53)) ('pVHL', 'Gene', '7428', (62, 66)) ('p.Arg161Gln', 'Mutation', 'rs730882035', (4, 15)) ('Elongin-C', 'Gene', '6921', (71, 80)) ('pVHL', 'Gene', (62, 66)) ('p.Arg161Gln', 'Var', (4, 15)) ('destabilizes', 'NegReg', (25, 37)) 82013 30943211 This arginine forms a salt-bridge with Elongin-C Glu92 and substitution with glutamine impairs this interaction, weakening VCB complex formation. ('Elongin-C', 'Gene', '6921', (39, 48)) ('interaction', 'Interaction', (100, 111)) ('salt-bridge', 'MPA', (22, 33)) ('VCB complex formation', 'MPA', (123, 144)) ('VCB', 'Chemical', '-', (123, 126)) ('substitution', 'Var', (59, 71)) ('impairs', 'NegReg', (87, 94)) ('weakening', 'NegReg', (113, 122)) ('Glu92 and substitution with glutamine', 'Mutation', 'p.E92Q', (49, 86)) ('arginine', 'Chemical', 'MESH:D001120', (5, 13)) ('Elongin-C', 'Gene', (39, 48)) 82014 30943211 Collectively, our analysis shows the most frequent mutations affecting surface A to exert pathogenicity by directly impairing VCB complex formation rather than compromising the pVHL/HIF-1alpha interaction. ('compromising', 'NegReg', (160, 172)) ('pVHL', 'Gene', '7428', (177, 181)) ('mutations', 'Var', (51, 60)) ('HIF-1alpha', 'Gene', '3091', (182, 192)) ('surface A', 'Gene', (71, 80)) ('impairing', 'NegReg', (116, 125)) ('VCB', 'Protein', (126, 129)) ('pVHL', 'Gene', (177, 181)) ('VCB', 'Chemical', '-', (126, 129)) ('HIF-1alpha', 'Gene', (182, 192)) 82015 30943211 Conversely, mutation p.Tyr98His on surface B exerts its pathogenic effect by directly disrupting pVHL association with HIF-1alpha. ('association', 'Interaction', (102, 113)) ('p.Tyr98His', 'Mutation', 'rs5030809', (21, 31)) ('HIF-1alpha', 'Gene', '3091', (119, 129)) ('pVHL', 'Gene', '7428', (97, 101)) ('p.Tyr98His', 'Var', (21, 31)) ('pVHL', 'Gene', (97, 101)) ('disrupting', 'NegReg', (86, 96)) ('HIF-1alpha', 'Gene', (119, 129)) 82016 30943211 Tyr98 plays a predominant role in pVHL substrate recognition, forming a hydrogen bond with the HIF1-alpha Pro564 backbone. ('Tyr98', 'Chemical', '-', (0, 5)) ('pVHL', 'Gene', '7428', (34, 38)) ('pVHL', 'Gene', (34, 38)) ('forming', 'Reg', (62, 69)) ('hydrogen bond', 'MPA', (72, 85)) ('Pro564', 'Chemical', '-', (106, 112)) ('HIF1-alpha', 'Gene', (95, 105)) ('Tyr98', 'Var', (0, 5)) ('hydrogen', 'Chemical', 'MESH:D006859', (72, 80)) ('HIF1-alpha', 'Gene', '3091', (95, 105)) 82018 30943211 Other frequent mutations localizing on surface B (p.Ser65Leu, p.Asn78Ser, Pro81Ser) are predicted to play a role in destabilizing the beta-domain. ('p.Asn78Ser', 'Var', (62, 72)) ('p.Asn78Ser', 'Mutation', 'rs5030804', (62, 72)) ('Pro81Ser', 'Var', (74, 82)) ('destabilizing', 'NegReg', (116, 129)) ('p.Ser65Leu', 'Var', (50, 60)) ('p.Ser65Leu', 'Mutation', 'rs5030826', (50, 60)) ('beta-domain', 'MPA', (134, 145)) ('Pro81Ser', 'SUBSTITUTION', 'None', (74, 82)) 82021 30943211 Similarly, mutation p.Ala149Ser affects surface C and is localized on the seventh strand of the beta-domain. ('surface C', 'MPA', (40, 49)) ('p.Ala149Ser', 'Var', (20, 31)) ('affects', 'Reg', (32, 39)) ('p.Ala149Ser', 'Mutation', 'rs587780077', (20, 31)) 82022 30943211 Ala149 contributes to the pVHL hydrophobic core, forming van der Waals interactions with Val74, Phe76, Phe119, Val130 and Phe136. ('interactions', 'Interaction', (71, 83)) ('Val74', 'Var', (89, 94)) ('Ala149', 'Chemical', '-', (0, 6)) ('Phe76', 'Var', (96, 101)) ('Phe136', 'Chemical', '-', (122, 128)) ('Phe119', 'Var', (103, 109)) ('Val130', 'Var', (111, 117)) ('van der Waals', 'Disease', 'MESH:C536528', (57, 70)) ('Phe119', 'Chemical', '-', (103, 109)) ('Phe136', 'Var', (122, 128)) ('pVHL', 'Gene', '7428', (26, 30)) ('Phe76', 'Chemical', '-', (96, 101)) ('Val74', 'Chemical', '-', (89, 94)) ('pVHL', 'Gene', (26, 30)) ('Val130', 'Chemical', '-', (111, 117)) ('van der Waals', 'Disease', (57, 70)) 82023 30943211 Substitution with serine may drive pVHL fold destabilization and VHL syndrome insurgence. ('Substitution', 'Var', (0, 12)) ('VHL syndrome', 'Disease', 'MESH:D006623', (65, 77)) ('pVHL', 'Gene', '7428', (35, 39)) ('insurgence', 'Disease', (78, 88)) ('pVHL', 'Gene', (35, 39)) ('serine', 'Chemical', 'MESH:D012694', (18, 24)) ('VHL syndrome', 'Disease', (65, 77)) 82024 30943211 Finally, p.Arg200Trp is the only frequent mutation in the pVHL C-terminal tail and mostly associated to polycythemia. ('polycythemia', 'Disease', 'MESH:D011086', (104, 116)) ('pVHL', 'Gene', '7428', (58, 62)) ('p.Arg200Trp', 'Mutation', 'rs28940298', (9, 20)) ('pVHL', 'Gene', (58, 62)) ('polycythemia', 'Disease', (104, 116)) ('associated', 'Reg', (90, 100)) ('p.Arg200Trp', 'Var', (9, 20)) ('polycythemia', 'Phenotype', 'HP:0001901', (104, 116)) 82025 30943211 It disrupts a salt bridge between Arg200 and Glu134 which helps the alpha-domain to fold correctly. ('Glu134', 'Var', (45, 51)) ('helps', 'Reg', (58, 63)) ('Arg200', 'Var', (34, 40)) ('Arg200', 'Chemical', '-', (34, 40)) ('alpha-domain', 'Protein', (68, 80)) ('disrupts', 'NegReg', (3, 11)) ('salt bridge', 'MPA', (14, 25)) ('Glu134', 'Chemical', '-', (45, 51)) ('fold', 'MPA', (84, 88)) 82026 30943211 Our preliminary mapping of the most recurring pVHL mutations provides some useful hints about their pathogenic effect. ('pVHL', 'Gene', '7428', (46, 50)) ('mutations', 'Var', (51, 60)) ('pVHL', 'Gene', (46, 50)) 82028 30943211 A possible interpretation is that these amino acid changes disrupt pVHL association with interactors other than Elongin-C, Elongin-B and HIF-1alpha. ('Elongin-B', 'Gene', (123, 132)) ('Elongin-C', 'Gene', '6921', (112, 121)) ('disrupt', 'NegReg', (59, 66)) ('amino acid changes', 'Var', (40, 58)) ('association', 'Interaction', (72, 83)) ('HIF-1alpha', 'Gene', '3091', (137, 147)) ('pVHL', 'Gene', '7428', (67, 71)) ('pVHL', 'Gene', (67, 71)) ('HIF-1alpha', 'Gene', (137, 147)) ('Elongin-B', 'Gene', '6923', (123, 132)) ('Elongin-C', 'Gene', (112, 121)) 82029 30943211 To address this issue, we extracted from VHLdb interactors known to specifically bind pVHL regions corresponding to the most frequent mutations (S5 Table). ('VHL', 'Gene', '7428', (87, 90)) ('VHL', 'Gene', (41, 44)) ('pVHL', 'Gene', '7428', (86, 90)) ('pVHL', 'Gene', (86, 90)) ('mutations', 'Var', (134, 143)) ('bind', 'Interaction', (81, 85)) ('VHL', 'Gene', (87, 90)) ('VHL', 'Gene', '7428', (41, 44)) 82037 30943211 This interaction was proposed to play a role in Chuvash polycythemia insurgence, a familiar polycythemia form caused by pVHL mutations. ('caused by', 'Reg', (110, 119)) ('mutations', 'Var', (125, 134)) ('polycythemia', 'Disease', 'MESH:D011086', (56, 68)) ('polycythemia', 'Disease', (92, 104)) ('polycythemia', 'Phenotype', 'HP:0001901', (92, 104)) ('Chuvash polycythemia insurgence', 'Disease', (48, 79)) ('polycythemia', 'Disease', 'MESH:D011086', (92, 104)) ('Chuvash polycythemia insurgence', 'Disease', 'MESH:C563918', (48, 79)) ('polycythemia', 'Disease', (56, 68)) ('pVHL', 'Gene', '7428', (120, 124)) ('polycythemia', 'Phenotype', 'HP:0001901', (56, 68)) ('pVHL', 'Gene', (120, 124)) 82038 30943211 Mutations on surface B can compromise pVHL association with 23 different interactors. ('pVHL', 'Gene', (38, 42)) ('association', 'Interaction', (43, 54)) ('compromise', 'NegReg', (27, 37)) ('surface B', 'Gene', (13, 22)) ('Mutations', 'Var', (0, 9)) ('pVHL', 'Gene', '7428', (38, 42)) 82046 30943211 Based on these data, we suggest that the pathogenic assessment of mutations affecting this area should also include other putative pVHL hydroxylated-substrates beyond the sole HIF-1/2alpha, e.g. ('mutations', 'Var', (66, 75)) ('HIF-1/2alpha', 'Gene', '3091;2034', (176, 188)) ('pVHL', 'Gene', '7428', (131, 135)) ('pVHL', 'Gene', (131, 135)) ('HIF-1/2alpha', 'Gene', (176, 188)) 82052 30943211 We wondered whether the position of mutations on pVHL surfaces may associate with specific disease manifestations. ('pVHL', 'Gene', '7428', (49, 53)) ('pVHL', 'Gene', (49, 53)) ('associate', 'Reg', (67, 76)) ('mutations', 'Var', (36, 45)) 82053 30943211 We retrieved 1,670 mutations affecting different pVHL binding interfaces and isolated 742 amino acid variations associated to VHL phenotype, e.g. ('pVHL', 'Gene', '7428', (49, 53)) ('VHL', 'Gene', (50, 53)) ('pVHL', 'Gene', (49, 53)) ('VHL', 'Gene', '7428', (50, 53)) ('mutations', 'Var', (19, 28)) ('VHL', 'Gene', (126, 129)) ('affecting', 'Reg', (29, 38)) ('VHL', 'Gene', '7428', (126, 129)) 82054 30943211 only substitutions described as yielding RCC (S6 Table). ('RCC', 'Disease', 'MESH:C538614', (41, 44)) ('substitutions', 'Var', (5, 18)) ('RCC', 'Disease', (41, 44)) ('RCC', 'Phenotype', 'HP:0005584', (41, 44)) 82055 30943211 We focus on mutations affecting single residues on each binding surface, to isolate pVHL areas that can support unknown functions or binding motifs. ('pVHL', 'Gene', (84, 88)) ('mutations', 'Var', (12, 21)) ('pVHL', 'Gene', '7428', (84, 88)) 82056 30943211 Normalizing the number of mutated positions over the number of residues forming each interface shows surface B to present the highest number of mutated positions (39/43), indicating that 91% of residues forming this interface are targeted by VHL mutations. ('mutations', 'Var', (246, 255)) ('targeted', 'Reg', (230, 238)) ('VHL', 'Gene', (242, 245)) ('VHL', 'Gene', '7428', (242, 245)) 82063 30943211 Pheochromocytoma is slightly more frequent when mutations affect surface B (17.5%) than surface C (15.3%). ('Pheochromocytoma', 'Disease', (0, 16)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('frequent', 'Reg', (34, 42)) ('surface', 'Gene', (65, 72)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('mutations', 'Var', (48, 57)) 82065 30943211 In the same way, surface A mutations are associated with almost the entire spectrum of VHL phenotypes (Fig 4). ('mutations', 'Var', (27, 36)) ('VHL', 'Gene', '7428', (87, 90)) ('associated', 'Reg', (41, 51)) ('surface', 'Gene', (17, 24)) ('VHL', 'Gene', (87, 90)) 82067 30943211 Surface D mutations, which are only present in the pVHL30 isoform, are mostly associated with renal disease (75.6%). ('associated', 'Reg', (78, 88)) ('pVHL', 'Gene', '7428', (51, 55)) ('renal disease', 'Phenotype', 'HP:0000112', (94, 107)) ('pVHL', 'Gene', (51, 55)) ('Surface', 'Gene', (0, 7)) ('mutations', 'Var', (10, 19)) ('renal disease', 'Disease', (94, 107)) ('renal disease', 'Disease', 'MESH:D007674', (94, 107)) 82068 30943211 Of note, cerebellar-hemangioblastoma (6.7%) is the only hemangioblastoma subtype described for mutations affecting this interface. ('hemangioblastoma', 'Phenotype', 'HP:0010797', (20, 36)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (56, 72)) ('cerebellar-hemangioblastoma', 'Disease', 'MESH:D018325', (9, 36)) ('cerebellar-hemangioblastoma', 'Phenotype', 'HP:0006880', (9, 36)) ('cerebellar-hemangioblastoma', 'Disease', (9, 36)) ('hemangioblastoma subtype', 'Disease', 'MESH:D018325', (56, 80)) ('mutations', 'Var', (95, 104)) ('hemangioblastoma subtype', 'Disease', (56, 80)) 82070 30943211 Finally, C-terminal mutations are mainly characterized by renal syndrome (40.7%) and pheochromocytoma (18.5%). ('renal syndrome', 'Disease', 'MESH:D007674', (58, 72)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (85, 101)) ('C-terminal mutations', 'Var', (9, 29)) ('characterized', 'Reg', (41, 54)) ('pheochromocytoma', 'Disease', (85, 101)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (85, 101)) ('renal syndrome', 'Disease', (58, 72)) 82071 30943211 Intriguingly, mutations associated to non-canonical VHL manifestations, such as polycythemia (14.8%), colorectal cancer (14.8%) and glial tumor (7.4%) seem mostly to derive from mutations of this interface. ('polycythemia', 'Phenotype', 'HP:0001901', (80, 92)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (102, 119)) ('colorectal cancer', 'Disease', (102, 119)) ('VHL', 'Gene', '7428', (52, 55)) ('associated', 'Reg', (24, 34)) ('cancer', 'Phenotype', 'HP:0002664', (113, 119)) ('glial tumor', 'Disease', (132, 143)) ('polycythemia', 'Disease', 'MESH:D011086', (80, 92)) ('colorectal cancer', 'Disease', 'MESH:D015179', (102, 119)) ('derive from', 'Reg', (166, 177)) ('glial tumor', 'Disease', 'MESH:D005910', (132, 143)) ('mutations', 'Var', (178, 187)) ('mutations', 'Var', (14, 23)) ('VHL', 'Gene', (52, 55)) ('polycythemia', 'Disease', (80, 92)) ('tumor', 'Phenotype', 'HP:0002664', (138, 143)) 82072 30943211 Structural investigation suggests that changes in this region should neither impair HIF-1alpha nor VCB complex formation. ('changes', 'Var', (39, 46)) ('VCB', 'Chemical', '-', (99, 102)) ('HIF-1alpha', 'Gene', '3091', (84, 94)) ('HIF-1alpha', 'Gene', (84, 94)) 82076 30943211 Analyzing the data presented so far from a disease point of view, we observe that renal disease, pheochromocytoma and pancreatic insults derive from mutations affecting all pVHL interfaces. ('pheochromocytoma', 'Disease', (97, 113)) ('derive from', 'Reg', (137, 148)) ('mutations', 'Var', (149, 158)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (97, 113)) ('renal disease', 'Disease', (82, 95)) ('pancreatic insults', 'Disease', (118, 136)) ('renal disease', 'Disease', 'MESH:D007674', (82, 95)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (97, 113)) ('renal disease', 'Phenotype', 'HP:0000112', (82, 95)) ('pVHL', 'Gene', '7428', (173, 177)) ('pancreatic insults', 'Disease', 'MESH:D010195', (118, 136)) ('pVHL', 'Gene', (173, 177)) 82078 30943211 Instead, retinal-hemangioblastoma arises from mutations limited to the three main interfaces (A-C). ('retinal-hemangioblastoma', 'Phenotype', 'HP:0009711', (9, 33)) ('mutations', 'Var', (46, 55)) ('retinal-hemangioblastoma', 'Disease', (9, 33)) ('retinal-hemangioblastoma', 'Disease', 'MESH:D018325', (9, 33)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (17, 33)) 82079 30943211 The cerebellar subtype also seems to include mutations on interface D present only in the pVHL30 isoform. ('mutations', 'Var', (45, 54)) ('cerebellar', 'Disease', (4, 14)) ('pVHL', 'Gene', '7428', (90, 94)) ('interface D', 'Gene', (58, 69)) ('pVHL', 'Gene', (90, 94)) 82084 30943211 Considered these data, we decided to isolate only pVHL interactors unaffected by the mutation associated to a specific phenotype to reduce incoherence and lower the risk of redundancy, generating a set of negative snapshots describing pVHL interactions and pathways not directly compromised by a specific mutation (Table 1). ('pVHL', 'Gene', '7428', (50, 54)) ('interactions', 'Interaction', (240, 252)) ('mutation', 'Var', (85, 93)) ('pVHL', 'Gene', '7428', (235, 239)) ('pVHL', 'Gene', (50, 54)) ('incoherence', 'MPA', (139, 150)) ('pVHL', 'Gene', (235, 239)) ('reduce', 'NegReg', (132, 138)) 82085 30943211 Our data show that mutations promoting RCC, and more in general renal disease, can interest virtually all considered interactors. ('renal disease', 'Disease', (64, 77)) ('renal disease', 'Disease', 'MESH:D007674', (64, 77)) ('renal disease', 'Phenotype', 'HP:0000112', (64, 77)) ('promoting', 'PosReg', (29, 38)) ('mutations', 'Var', (19, 28)) ('RCC', 'Disease', (39, 42)) ('RCC', 'Disease', 'MESH:C538614', (39, 42)) ('RCC', 'Phenotype', 'HP:0005584', (39, 42)) 82087 30943211 Similarly, mutations only associated with pheochromocytoma severely affect the DGKZ, PRKCI, PRKCD and PRKCZ kinase binding interfaces, further suggesting a link between hypoxia sensing and phosphorylation-mediated signaling. ('pheochromocytoma', 'Disease', 'MESH:D010673', (42, 58)) ('mutations', 'Var', (11, 20)) ('PRKCZ', 'Gene', '5590', (102, 107)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (42, 58)) ('hypoxia', 'Disease', 'MESH:D000860', (169, 176)) ('PRKCD', 'Gene', (92, 97)) ('PRKCD', 'Gene', '5580', (92, 97)) ('DGKZ', 'Gene', (79, 83)) ('PRKCI', 'Gene', '5584', (85, 90)) ('PRKCI', 'Gene', (85, 90)) ('binding', 'Interaction', (115, 122)) ('DGKZ', 'Gene', '8525', (79, 83)) ('PRKCZ', 'Gene', (102, 107)) ('affect', 'Reg', (68, 74)) ('pheochromocytoma', 'Disease', (42, 58)) ('hypoxia', 'Disease', (169, 176)) 82088 30943211 Mutations associated only to this neuroendocrine tumor affect the pVHL association with almost the entire subset of interactors considered. ('neuroendocrine tumor', 'Disease', 'MESH:D018358', (34, 54)) ('affect', 'Reg', (55, 61)) ('pVHL', 'Gene', '7428', (66, 70)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('pVHL', 'Gene', (66, 70)) ('Mutations', 'Var', (0, 9)) ('neuroendocrine tumor', 'Disease', (34, 54)) ('association', 'Interaction', (71, 82)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (34, 54)) 82092 30943211 Our finding indicates that cells harboring these mutations may retain AKT1 inhibition and suggest that proliferative pathways modulated by pVHL/AKT1 association are not compromised. ('AKT1', 'Gene', '207', (144, 148)) ('mutations', 'Var', (49, 58)) ('AKT1', 'Gene', (144, 148)) ('pVHL', 'Gene', '7428', (139, 143)) ('AKT1', 'Gene', '207', (70, 74)) ('pVHL', 'Gene', (139, 143)) ('AKT1', 'Gene', (70, 74)) ('proliferative', 'CPA', (103, 116)) 82094 30943211 HSPA4, also known as HSP70RY, is a member of the HSP70 chaperone family proposed to rescue premature degradation of pVHL mutants, inducing their stabilization and halting tumor progression. ('HSP70', 'Gene', (21, 26)) ('tumor', 'Disease', 'MESH:D009369', (171, 176)) ('inducing', 'PosReg', (130, 138)) ('HSPA4', 'Gene', '3308', (0, 5)) ('rescue', 'PosReg', (84, 90)) ('HSP70', 'Gene', '3308', (21, 26)) ('HSP70RY', 'Gene', '3308', (21, 28)) ('pVHL', 'Gene', '7428', (116, 120)) ('tumor', 'Phenotype', 'HP:0002664', (171, 176)) ('pVHL', 'Gene', (116, 120)) ('HSP70', 'Gene', (49, 54)) ('HSP70RY', 'Gene', (21, 28)) ('mutants', 'Var', (121, 128)) ('halting', 'NegReg', (163, 170)) ('HSPA4', 'Gene', (0, 5)) ('tumor', 'Disease', (171, 176)) ('premature degradation', 'MPA', (91, 112)) ('HSP70', 'Gene', '3308', (49, 54)) ('stabilization', 'MPA', (145, 158)) 82095 30943211 Collectively, these data are in agreement with the slow progression rate reported for pheochromocytomas and describe this cancer to arise only from partial pVHL inactivation. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (86, 102)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (86, 103)) ('inactivation', 'Var', (161, 173)) ('cancer', 'Disease', (122, 128)) ('pheochromocytomas', 'Disease', (86, 103)) ('pVHL', 'Gene', '7428', (156, 160)) ('cancer', 'Disease', 'MESH:D009369', (122, 128)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (86, 103)) ('pVHL', 'Gene', (156, 160)) ('cancer', 'Phenotype', 'HP:0002664', (122, 128)) 82096 30943211 Mutations associated with both cerebellar- and retinal-hemangioblastoma localize in regions not affecting the pVHL interaction with transcription factors (TP53, ELAVL1) and regulators (ID2, E2F1, ELOC). ('pVHL', 'Gene', '7428', (110, 114)) ('TP53', 'Gene', '7157', (155, 159)) ('E2F1', 'Gene', '1869', (190, 194)) ('E2F1', 'Gene', (190, 194)) ('pVHL', 'Gene', (110, 114)) ('ELAVL1', 'Gene', '1994', (161, 167)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (55, 71)) ('associated', 'Reg', (10, 20)) ('retinal-hemangioblastoma', 'Phenotype', 'HP:0009711', (47, 71)) ('ELOC', 'Gene', '6921', (196, 200)) ('TP53', 'Gene', (155, 159)) ('cerebellar-', 'Disease', (31, 42)) ('Mutations', 'Var', (0, 9)) ('ELAVL1', 'Gene', (161, 167)) ('retinal-hemangioblastoma', 'Disease', (47, 71)) ('retinal-hemangioblastoma', 'Disease', 'MESH:D018325', (47, 71)) ('ELOC', 'Gene', (196, 200)) 82099 30943211 Conversely, pVHL mutations associated to colorectal cancer do not affect association with HIF-1alpha, TP53, or proteins involved in extracellular matrix (ECM) formation and turnover, such as TUBB, TUBA1A, TUBA4A, KIF3A and KIF3B. ('KIF3A', 'Gene', '11127', (213, 218)) ('TP53', 'Gene', (102, 106)) ('colorectal cancer', 'Disease', (41, 58)) ('KIF3B', 'Gene', (223, 228)) ('HIF-1alpha', 'Gene', '3091', (90, 100)) ('mutations', 'Var', (17, 26)) ('TUBA1A', 'Gene', '7846', (197, 203)) ('TUBB', 'Gene', '203068', (191, 195)) ('TP53', 'Gene', '7157', (102, 106)) ('KIF3A', 'Gene', (213, 218)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (41, 58)) ('TUBA1A', 'Gene', (197, 203)) ('TUBA4A', 'Gene', '7277', (205, 211)) ('HIF-1alpha', 'Gene', (90, 100)) ('pVHL', 'Gene', '7428', (12, 16)) ('pVHL', 'Gene', (12, 16)) ('TUBA4A', 'Gene', (205, 211)) ('cancer', 'Phenotype', 'HP:0002664', (52, 58)) ('associated', 'Reg', (27, 37)) ('association', 'Interaction', (73, 84)) ('colorectal cancer', 'Disease', 'MESH:D015179', (41, 58)) ('KIF3B', 'Gene', '9371', (223, 228)) ('TUBB', 'Gene', (191, 195)) 82100 30943211 Interestingly, a single mutation is observed as never inducing both paraganglioma, a tumor originating from paraganglia in chromaffin-negative glomus cells, and cystadenoma, a tumor of epithelial tissue with glandular origin. ('tumor', 'Disease', (85, 90)) ('chromaffin', 'Chemical', '-', (123, 133)) ('tumor', 'Phenotype', 'HP:0002664', (176, 181)) ('paraganglioma', 'Phenotype', 'HP:0002668', (68, 81)) ('tumor of epithelial tissue', 'Phenotype', 'HP:0031492', (176, 202)) ('tumor', 'Disease', (176, 181)) ('cystadenoma', 'Disease', 'MESH:D003537', (161, 172)) ('paraganglioma', 'Disease', (68, 81)) ('cystadenoma', 'Disease', (161, 172)) ('tumor', 'Disease', 'MESH:D009369', (85, 90)) ('mutation', 'Var', (24, 32)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('paraganglioma', 'Disease', 'MESH:D010235', (68, 81)) ('tumor', 'Disease', 'MESH:D009369', (176, 181)) 82107 30943211 We found multiple missense mutations overlapping a total of 14 PTM sites distributed on all of the pVHL binding surfaces (S8 Table, S3 Fig). ('pVHL', 'Gene', (99, 103)) ('missense mutations', 'Var', (18, 36)) ('pVHL', 'Gene', '7428', (99, 103)) 82108 30943211 Three residues localized in the surface D, Ser33, Ser38 and Ser43 are phosphorylated by CSNK2A1, which is known to reduce pVHL stability, as well as to affect HIF-1alpha and P53-mediated transcription. ('Ser33', 'Chemical', '-', (43, 48)) ('Ser43', 'Chemical', '-', (60, 65)) ('Ser33', 'Var', (43, 48)) ('HIF-1alpha', 'Gene', (159, 169)) ('P53', 'Gene', (174, 177)) ('Ser38', 'Chemical', '-', (50, 55)) ('CSNK2A1', 'Gene', (88, 95)) ('affect', 'Reg', (152, 158)) ('Ser38', 'Var', (50, 55)) ('P53', 'Gene', '7157', (174, 177)) ('HIF-1alpha', 'Gene', '3091', (159, 169)) ('Ser43', 'Var', (60, 65)) ('CSNK2A1', 'Gene', '1457', (88, 95)) ('reduce', 'NegReg', (115, 121)) ('pVHL', 'Gene', (122, 126)) ('pVHL', 'Gene', '7428', (122, 126)) 82109 30943211 In the contest of VHL syndrome, we found the Ser33 and Ser38 to be mutated in RCC and pheochromocytoma. ('pheochromocytoma', 'Disease', 'MESH:D010673', (86, 102)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (86, 102)) ('Ser38', 'Var', (55, 60)) ('VHL syndrome', 'Disease', 'MESH:D006623', (18, 30)) ('RCC', 'Disease', (78, 81)) ('RCC', 'Phenotype', 'HP:0005584', (78, 81)) ('Ser33', 'Chemical', '-', (45, 50)) ('RCC', 'Disease', 'MESH:C538614', (78, 81)) ('Ser33', 'Var', (45, 50)) ('Ser38', 'Chemical', '-', (55, 60)) ('pheochromocytoma', 'Disease', (86, 102)) ('VHL syndrome', 'Disease', (18, 30)) 82110 30943211 We also found mutations in sites recognized by AURKA, CSNK2A1, CHEK2, GSK3B. ('CHEK2', 'Gene', (63, 68)) ('CSNK2A1', 'Gene', (54, 61)) ('AURKA', 'Gene', '6790', (47, 52)) ('CSNK2A1', 'Gene', '1457', (54, 61)) ('GSK3B', 'Gene', '2932', (70, 75)) ('AURKA', 'Gene', (47, 52)) ('GSK3B', 'Gene', (70, 75)) ('mutations', 'Var', (14, 23)) ('CHEK2', 'Gene', '11200', (63, 68)) 82112 30943211 Mutation of this residue associates with RCC, retinal hemangioblastomas and pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (76, 92)) ('retinal hemangioblastomas and pheochromocytoma', 'Disease', 'MESH:D018325', (46, 92)) ('Mutation', 'Var', (0, 8)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (54, 70)) ('RCC', 'Phenotype', 'HP:0005584', (41, 44)) ('retinal hemangioblastomas', 'Phenotype', 'HP:0009711', (46, 71)) ('RCC', 'Disease', 'MESH:C538614', (41, 44)) ('RCC', 'Disease', (41, 44)) ('associates', 'Reg', (25, 35)) 82113 30943211 Surface B is also phosphorylated by AURKA and CSNK1A1 at Ser72, and patients with mutations affecting this residue develop hemangioblastomas and RCC. ('RCC', 'Disease', 'MESH:C538614', (145, 148)) ('RCC', 'Disease', (145, 148)) ('Ser72', 'Chemical', '-', (57, 62)) ('CSNK1A1', 'Gene', '1452', (46, 53)) ('CSNK1A1', 'Gene', (46, 53)) ('AURKA', 'Gene', '6790', (36, 41)) ('patients', 'Species', '9606', (68, 76)) ('develop', 'PosReg', (115, 122)) ('mutations', 'Var', (82, 91)) ('RCC', 'Phenotype', 'HP:0005584', (145, 148)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (123, 139)) ('AURKA', 'Gene', (36, 41)) ('hemangioblastomas', 'Disease', 'MESH:D018325', (123, 140)) ('hemangioblastomas', 'Disease', (123, 140)) 82114 30943211 Phosphorylation of pVHL by AURKA is thought to modulate microtubules stability and dynamics, while CSNK1A1 is involved in the reorganization of cytoskeleton. ('AURKA', 'Gene', '6790', (27, 32)) ('microtubules stability', 'MPA', (56, 78)) ('Phosphorylation', 'Var', (0, 15)) ('AURKA', 'Gene', (27, 32)) ('CSNK1A1', 'Gene', '1452', (99, 106)) ('CSNK1A1', 'Gene', (99, 106)) ('dynamics', 'MPA', (83, 91)) ('involved', 'Reg', (110, 118)) ('pVHL', 'Gene', '7428', (19, 23)) ('modulate', 'Reg', (47, 55)) ('pVHL', 'Gene', (19, 23)) 82115 30943211 Surface C is modified at Ser111 by CHEK2, whose missense substitution associates to retinal- and CNS-hemangioblastomas, pancreatic and renal cysts, RCC and pheochromocytoma. ('missense substitution', 'Var', (48, 69)) ('pheochromocytoma', 'Disease', (156, 172)) ('RCC', 'Disease', (148, 151)) ('RCC', 'Phenotype', 'HP:0005584', (148, 151)) ('renal cysts', 'Phenotype', 'HP:0000107', (135, 146)) ('associates', 'Reg', (70, 80)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (156, 172)) ('RCC', 'Disease', 'MESH:C538614', (148, 151)) ('CHEK2', 'Gene', '11200', (35, 40)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (101, 117)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (156, 172)) ('CNS-hemangioblastomas', 'Phenotype', 'HP:0006880', (97, 118)) ('CNS-hemangioblastomas', 'Disease', (97, 118)) ('CHEK2', 'Gene', (35, 40)) ('Ser111', 'Chemical', '-', (25, 31)) ('CNS-hemangioblastomas', 'Disease', 'MESH:D018325', (97, 118)) ('pancreatic and renal cysts', 'Disease', 'MESH:D010181', (120, 146)) 82119 30943211 Two surface B residues, Arg79 and Arg82, are methylated by the protein arginine methyltransferases family (PRMTs). ('Arg79', 'Chemical', '-', (24, 29)) ('arginine', 'Chemical', 'MESH:D001120', (71, 79)) ('Arg79', 'Var', (24, 29)) ('Arg82', 'Chemical', '-', (34, 39)) ('Arg82', 'Var', (34, 39)) 82121 30943211 Ubiquitination of pVHL is known to occur at residues Lys155, Lys171 and Lys196. ('Lys171', 'Var', (61, 67)) ('pVHL', 'Gene', '7428', (18, 22)) ('Lys196', 'Chemical', '-', (72, 78)) ('pVHL', 'Gene', (18, 22)) ('Lys155', 'Chemical', '-', (53, 59)) ('Lys171', 'Chemical', '-', (61, 67)) ('Ubiquitination', 'MPA', (0, 14)) ('Lys196', 'Var', (72, 78)) 82122 30943211 According to our data, we found only Lys171 to be mutated in RCC. ('Lys171', 'Chemical', '-', (37, 43)) ('RCC', 'Disease', 'MESH:C538614', (61, 64)) ('RCC', 'Disease', (61, 64)) ('RCC', 'Phenotype', 'HP:0005584', (61, 64)) ('Lys171', 'Var', (37, 43)) 82123 30943211 Collectively taken, these results suggest that several VHL pathogenic variants can exert their effect by disrupting and/or altering complex signaling networks regulated by proteins involved in PTM events. ('disrupting', 'NegReg', (105, 115)) ('complex signaling networks regulated by proteins', 'MPA', (132, 180)) ('variants', 'Var', (70, 78)) ('VHL', 'Gene', '7428', (55, 58)) ('VHL', 'Gene', (55, 58)) ('altering', 'Reg', (123, 131)) 82125 30943211 The five mutations p.Arg161Gln, p.Gln164His, p.Val166Phe, Arg167Trp and Arg167Gln localize in a small area forming the ELAVL1 binding interface (Fig 5). ('p.Gln164His', 'Var', (32, 43)) ('p.Arg161Gln', 'Var', (19, 30)) ('ELAVL1', 'Gene', '1994', (119, 125)) ('p.Val166Phe', 'Var', (45, 56)) ('Arg167Gln', 'SUBSTITUTION', 'None', (72, 81)) ('p.Val166Phe', 'Mutation', 'rs104893825', (45, 56)) ('ELAVL1', 'Gene', (119, 125)) ('p.Gln164His', 'Mutation', 'rs1352275281', (32, 43)) ('Arg167Trp', 'SUBSTITUTION', 'None', (58, 67)) ('p.Arg161Gln', 'Mutation', 'rs730882035', (19, 30)) ('Arg167Gln', 'Var', (72, 81)) ('Arg167Trp', 'Var', (58, 67)) 82127 30943211 Similarly, the three mutations p.His115Arg, p.Trp117Gly and p.Ile151Phe localize on the androgen receptor (AR) binding interface, suggesting that these specific interactors may play a crucial role in cystadenoma insurgence (Fig 5). ('p.Trp117Gly', 'Mutation', 'p.W117G', (44, 55)) ('play', 'Reg', (177, 181)) ('androgen receptor', 'Gene', (88, 105)) ('p.Ile151Phe', 'Mutation', 'p.I151F', (60, 71)) ('androgen receptor', 'Gene', '367', (88, 105)) ('cystadenoma', 'Disease', 'MESH:D003537', (200, 211)) ('AR', 'Gene', '367', (107, 109)) ('p.His115Arg', 'Var', (31, 42)) ('p.Trp117Gly', 'Var', (44, 55)) ('p.His115Arg', 'Mutation', 'rs5030812', (31, 42)) ('p.Ile151Phe', 'Var', (60, 71)) ('cystadenoma', 'Disease', (200, 211)) 82128 30943211 We also found p.Tyr175Cys linked to the insurgence of polycythemia associated with ataxia telangiectasia (AT). ('p.Tyr175Cys', 'Var', (14, 25)) ('telangiectasia', 'Phenotype', 'HP:0001009', (90, 104)) ('polycythemia', 'Phenotype', 'HP:0001901', (54, 66)) ('ataxia telangiectasia', 'Disease', 'MESH:D001260', (83, 104)) ('polycythemia', 'Disease', 'MESH:D011086', (54, 66)) ('p.Tyr175Cys', 'Mutation', 'rs193922613', (14, 25)) ('AT', 'Disease', 'None', (106, 108)) ('ataxia telangiectasia', 'Disease', (83, 104)) ('ataxia', 'Phenotype', 'HP:0001251', (83, 89)) ('linked', 'Reg', (26, 32)) ('polycythemia', 'Disease', (54, 66)) 82130 30943211 Interestingly, AT is caused by mutations affecting serine-protein kinase ATM (ataxia telangiectasia mutated), a pVHL interactor of unknown binding interface. ('pVHL', 'Gene', (112, 116)) ('ATM', 'Gene', (73, 76)) ('mutations', 'Var', (31, 40)) ('ataxia', 'Phenotype', 'HP:0001251', (78, 84)) ('ATM', 'Gene', '472', (73, 76)) ('ataxia telangiectasia mutated', 'Gene', (78, 107)) ('AT', 'Disease', 'None', (15, 17)) ('ataxia telangiectasia mutated', 'Gene', '472', (78, 107)) ('pVHL', 'Gene', '7428', (112, 116)) ('serine', 'Chemical', 'MESH:D012694', (51, 57)) ('telangiectasia', 'Phenotype', 'HP:0001009', (85, 99)) ('caused by', 'Reg', (21, 30)) ('serine-protein kinase', 'Enzyme', (51, 72)) ('AT', 'Disease', 'None', (73, 75)) 82137 30943211 Based on this model, the five mutations p.Arg161Gln, p.Gln164His, p.Val166Phe, Arg167Trp and Arg167Gln are not directly involved in ELAVL1 binding, but rather allow the right positioning of helices forming the pVHL alpha-domain. ('ELAVL1', 'Gene', (132, 138)) ('Arg167Gln', 'Var', (93, 102)) ('pVHL', 'Gene', '7428', (210, 214)) ('p.Arg161Gln', 'Var', (40, 51)) ('p.Gln164His', 'Var', (53, 64)) ('p.Val166Phe', 'Var', (66, 77)) ('pVHL', 'Gene', (210, 214)) ('involved', 'Reg', (120, 128)) ('p.Val166Phe', 'Mutation', 'rs104893825', (66, 77)) ('p.Gln164His', 'Mutation', 'rs1352275281', (53, 64)) ('Arg167Gln', 'SUBSTITUTION', 'None', (93, 102)) ('helices', 'Protein', (190, 197)) ('allow', 'Reg', (159, 164)) ('Arg167Trp', 'SUBSTITUTION', 'None', (79, 88)) ('p.Arg161Gln', 'Mutation', 'rs730882035', (40, 51)) ('ELAVL1', 'Gene', '1994', (132, 138)) ('binding', 'Interaction', (139, 146)) ('Arg167Trp', 'Var', (79, 88)) 82139 30943211 This justifies the inhibitory effect, as pVHL mutations p.His115Arg, p.Trp117Gly and p.Ile151Phe are predicted to disturb association with AR and directly interfering with correct folding of interface C. We observed that both pVHL interactions with ELAVL1 and AR are predicted as mainly electrostatic. ('p.His115Arg', 'Var', (56, 67)) ('disturb', 'NegReg', (114, 121)) ('pVHL', 'Gene', (41, 45)) ('association', 'Interaction', (122, 133)) ('AR', 'Gene', '367', (139, 141)) ('ELAVL1', 'Gene', '1994', (249, 255)) ('p.His115Arg', 'Mutation', 'rs5030812', (56, 67)) ('interfering', 'NegReg', (155, 166)) ('correct folding', 'MPA', (172, 187)) ('p.Trp117Gly', 'Var', (69, 80)) ('ELAVL1', 'Gene', (249, 255)) ('p.Ile151Phe', 'Mutation', 'p.I151F', (85, 96)) ('AR', 'Gene', '367', (260, 262)) ('p.Trp117Gly', 'Mutation', 'p.W117G', (69, 80)) ('pVHL', 'Gene', '7428', (226, 230)) ('p.Ile151Phe', 'Var', (85, 96)) ('pVHL', 'Gene', '7428', (41, 45)) ('pVHL', 'Gene', (226, 230)) 82141 30943211 On the other hand, these findings also suggest that small clusters of pVHL mutations can disturb the binding of entire pVHL interfaces by promoting local unfolding and disturbing a specific binding area. ('disturbing', 'Reg', (168, 178)) ('local unfolding', 'MPA', (148, 163)) ('pVHL', 'Gene', '7428', (70, 74)) ('promoting', 'PosReg', (138, 147)) ('pVHL', 'Gene', (70, 74)) ('disturb', 'Reg', (89, 96)) ('mutations', 'Var', (75, 84)) ('binding', 'Interaction', (101, 108)) ('pVHL', 'Gene', '7428', (119, 123)) ('specific', 'MPA', (181, 189)) ('pVHL', 'Gene', (119, 123)) 82142 30943211 This mechanism may be easily used by cancer cells to inactivate an entire set of pVHL functions by single mutation, rapidly acquiring a fitness advantage over neighboring healthy cells. ('inactivate', 'NegReg', (53, 63)) ('cancer', 'Disease', 'MESH:D009369', (37, 43)) ('single mutation', 'Var', (99, 114)) ('cancer', 'Disease', (37, 43)) ('fitness', 'MPA', (136, 143)) ('acquiring', 'PosReg', (124, 133)) ('cancer', 'Phenotype', 'HP:0002664', (37, 43)) ('pVHL', 'Gene', '7428', (81, 85)) ('pVHL', 'Gene', (81, 85)) 82149 30943211 Alterations of proopiomelanocortin levels are a common trait of VHL-related tumors. ('proopiomelanocortin', 'Gene', (15, 34)) ('Alterations', 'Var', (0, 11)) ('proopiomelanocortin', 'Gene', '5443', (15, 34)) ('VHL', 'Gene', (64, 67)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('tumors', 'Disease', (76, 82)) ('tumors', 'Disease', 'MESH:D009369', (76, 82)) ('VHL', 'Gene', '7428', (64, 67)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) 82150 30943211 These findings show that several mutations potentially impairing the interaction of pVHL with ELAVL1 may induce severe cell adaptations promoting tumor transformation. ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('impairing', 'NegReg', (55, 64)) ('cell adaptations', 'CPA', (119, 135)) ('interaction', 'Interaction', (69, 80)) ('mutations', 'Var', (33, 42)) ('tumor', 'Disease', (146, 151)) ('pVHL', 'Gene', '7428', (84, 88)) ('ELAVL1', 'Gene', '1994', (94, 100)) ('induce', 'Reg', (105, 111)) ('pVHL', 'Gene', (84, 88)) ('ELAVL1', 'Gene', (94, 100)) ('tumor', 'Disease', 'MESH:D009369', (146, 151)) 82158 30943211 This behavior is in agreement with the cystadenoma insurgence observed in patients harboring pVHL mutations localizing on the AR binding interface (p.His115Arg, p.Trp117Gly and p.Ile151Phe). ('p.His115Arg', 'Var', (148, 159)) ('p.Ile151Phe', 'Mutation', 'p.I151F', (177, 188)) ('p.Trp117Gly', 'Var', (161, 172)) ('cystadenoma', 'Disease', 'MESH:D003537', (39, 50)) ('pVHL', 'Gene', '7428', (93, 97)) ('patients', 'Species', '9606', (74, 82)) ('cystadenoma', 'Disease', (39, 50)) ('p.Trp117Gly', 'Mutation', 'p.W117G', (161, 172)) ('pVHL', 'Gene', (93, 97)) ('AR', 'Gene', '367', (126, 128)) ('p.Ile151Phe', 'Var', (177, 188)) ('p.His115Arg', 'Mutation', 'rs5030812', (148, 159)) 82162 30943211 Our model predicts that upon impairment of GSK3beta/pVHL association, glycogen metabolism is also impaired as enzymes deputed to glycogen synthesis are hyper-activated. ('glycogen metabolism', 'MPA', (70, 89)) ('pVHL', 'Gene', '7428', (52, 56)) ('pVHL', 'Gene', (52, 56)) ('hyper-activated', 'PosReg', (152, 167)) ('glycogen', 'Chemical', 'MESH:D006003', (70, 78)) ('GSK3beta', 'Gene', (43, 51)) ('impaired', 'NegReg', (98, 106)) ('association', 'Interaction', (57, 68)) ('impairment', 'Var', (29, 39)) ('glycogen', 'Chemical', 'MESH:D006003', (129, 137)) ('GSK3beta', 'Gene', '2932', (43, 51)) 82164 30943211 In a real cell, these findings can be seen as activation of a cellular reserve mechanism for adapting its function in response to tumor suppressor mutations. ('mutations', 'Var', (147, 156)) ('activation', 'PosReg', (46, 56)) ('tumor', 'Disease', 'MESH:D009369', (130, 135)) ('cellular', 'MPA', (62, 70)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('tumor', 'Disease', (130, 135)) 82165 30943211 GSK3beta is inhibited upon insulin stimulation, suggesting that cells harboring mutations affecting GSK3beta/pVHL association may undergo relevant HIF-1alpha functional deregulation when exposed to concurrent hypoxia and insulin stimuli. ('undergo', 'Reg', (130, 137)) ('insulin', 'Gene', (221, 228)) ('GSK3beta', 'Gene', '2932', (100, 108)) ('hypoxia', 'Disease', (209, 216)) ('mutations', 'Var', (80, 89)) ('hypoxia', 'Disease', 'MESH:D000860', (209, 216)) ('insulin', 'Gene', '3630', (221, 228)) ('pVHL', 'Gene', (109, 113)) ('HIF-1alpha', 'Gene', '3091', (147, 157)) ('GSK3beta', 'Gene', '2932', (0, 8)) ('insulin', 'Gene', (27, 34)) ('association', 'Interaction', (114, 125)) ('pVHL', 'Gene', '7428', (109, 113)) ('insulin', 'Gene', '3630', (27, 34)) ('GSK3beta', 'Gene', (100, 108)) ('GSK3beta', 'Gene', (0, 8)) ('HIF-1alpha', 'Gene', (147, 157)) 82166 30943211 Finally, as pVHL is thought to inhibit AKT1, loss of pVHL association with AKT1 is predicted to promote AKT1 hyper-activation, which in turn promotes activation of cell survival pathways, microtubules glycolysis as well as external matrix destabilization. ('AKT1', 'Gene', (39, 43)) ('promotes activation', 'PosReg', (141, 160)) ('association', 'Interaction', (58, 69)) ('AKT1', 'Gene', '207', (104, 108)) ('AKT1', 'Gene', (75, 79)) ('cell survival', 'CPA', (164, 177)) ('external', 'MPA', (223, 231)) ('promote', 'PosReg', (96, 103)) ('AKT1', 'Gene', (104, 108)) ('microtubules glycolysis', 'MPA', (188, 211)) ('hyper-activation', 'PosReg', (109, 125)) ('pVHL', 'Gene', '7428', (53, 57)) ('pVHL', 'Gene', '7428', (12, 16)) ('pVHL', 'Gene', (53, 57)) ('pVHL', 'Gene', (12, 16)) ('AKT1', 'Gene', '207', (75, 79)) ('AKT1', 'Gene', '207', (39, 43)) ('loss', 'Var', (45, 49)) 82167 30943211 In a cellular environment, these modifications can collectively be interpreted as enhanced anchorage-independent growth and tumor transformation. ('anchorage-independent growth', 'CPA', (91, 119)) ('enhanced', 'PosReg', (82, 90)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('tumor', 'Disease', (124, 129)) ('modifications', 'Var', (33, 46)) ('tumor', 'Disease', 'MESH:D009369', (124, 129)) 82168 30943211 We investigated the effect of mutations affecting the pVHL tumor suppressor and their correlation with different phenotypes described for VHL patients. ('VHL', 'Gene', '7428', (138, 141)) ('tumor', 'Disease', 'MESH:D009369', (59, 64)) ('tumor', 'Disease', (59, 64)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) ('mutations', 'Var', (30, 39)) ('pVHL', 'Gene', '7428', (54, 58)) ('VHL', 'Gene', (55, 58)) ('patients', 'Species', '9606', (142, 150)) ('pVHL', 'Gene', (54, 58)) ('VHL', 'Gene', (138, 141)) ('VHL', 'Gene', '7428', (55, 58)) 82169 30943211 Our efforts in deciphering pVHL functions arise from the consideration that clinical manifestations of this familiar predisposition to develop cancers may vary among patients harboring the same mutation. ('cancer', 'Phenotype', 'HP:0002664', (143, 149)) ('mutation', 'Var', (194, 202)) ('pVHL', 'Gene', (27, 31)) ('cancers', 'Disease', 'MESH:D009369', (143, 150)) ('cancers', 'Phenotype', 'HP:0002664', (143, 150)) ('cancers', 'Disease', (143, 150)) ('patients', 'Species', '9606', (166, 174)) ('pVHL', 'Gene', '7428', (27, 31)) 82174 30943211 We previously presented VHLdb, a database collecting interactors and mutations of the human pVHL aimed at rationalizing the existing knowledge around pVHL. ('mutations', 'Var', (69, 78)) ('VHL', 'Gene', '7428', (24, 27)) ('pVHL', 'Gene', (150, 154)) ('VHL', 'Gene', '7428', (93, 96)) ('human', 'Species', '9606', (86, 91)) ('pVHL', 'Gene', '7428', (92, 96)) ('VHL', 'Gene', (151, 154)) ('VHL', 'Gene', (24, 27)) ('pVHL', 'Gene', (92, 96)) ('VHL', 'Gene', '7428', (151, 154)) ('VHL', 'Gene', (93, 96)) ('pVHL', 'Gene', '7428', (150, 154)) 82176 30943211 As a first result, we found that the most frequent mutations impair either the pVHL role in VCB complex assembly or promote beta-domain destabilization. ('pVHL', 'Gene', '7428', (79, 83)) ('mutations', 'Var', (51, 60)) ('pVHL', 'Gene', (79, 83)) ('VCB', 'Chemical', '-', (92, 95)) ('promote', 'PosReg', (116, 123)) ('beta-domain destabilization', 'MPA', (124, 151)) ('impair', 'NegReg', (61, 67)) 82178 30943211 However, an analysis of pVHL interactors putatively affected by these same mutations tells a more complex story. ('pVHL', 'Gene', '7428', (24, 28)) ('pVHL', 'Gene', (24, 28)) ('mutations', 'Var', (75, 84)) ('affected', 'Reg', (52, 60)) 82183 30943211 Renal disease appears to be equally represented by mutations affecting the three main pVHL interfaces, while it is the predominant phenotype described for mutations localizing on surface D. This interface is formed by a long intrinsically disordered tail present only in the pVHL30 isoform, suggesting this specific isoform to play a precise role in renal cancer insurgence. ('renal cancer', 'Disease', (350, 362)) ('pVHL', 'Gene', (275, 279)) ('mutations', 'Var', (51, 60)) ('renal cancer', 'Phenotype', 'HP:0009726', (350, 362)) ('Renal disease', 'Disease', (0, 13)) ('renal cancer', 'Disease', 'MESH:D007680', (350, 362)) ('disordered', 'Disease', 'MESH:D030342', (239, 249)) ('pVHL', 'Gene', '7428', (86, 90)) ('cancer', 'Phenotype', 'HP:0002664', (356, 362)) ('pVHL', 'Gene', (86, 90)) ('disordered tail', 'Phenotype', 'HP:0002825', (239, 254)) ('Renal disease', 'Disease', 'MESH:D007674', (0, 13)) ('disordered', 'Disease', (239, 249)) ('Renal disease', 'Phenotype', 'HP:0000112', (0, 13)) ('pVHL', 'Gene', '7428', (275, 279)) 82185 30943211 We also found several mutations affecting pVHL PTM sites, indicating that malignant phenotypes can arise from pVHL functional deregulation rather than structural disruption. ('pVHL', 'Gene', '7428', (110, 114)) ('pVHL', 'Gene', '7428', (42, 46)) ('pVHL', 'Gene', (110, 114)) ('pVHL', 'Gene', (42, 46)) ('mutations', 'Var', (22, 31)) 82186 30943211 In particular, our simulation of phosphorylation events impaired by cancer-related mutations shows that correct interpretation of VHL fate benefits from the integration of different information sources. ('mutations', 'Var', (83, 92)) ('phosphorylation', 'MPA', (33, 48)) ('cancer', 'Phenotype', 'HP:0002664', (68, 74)) ('VHL', 'Gene', (130, 133)) ('cancer', 'Disease', 'MESH:D009369', (68, 74)) ('cancer', 'Disease', (68, 74)) ('VHL', 'Gene', '7428', (130, 133)) 82189 30943211 Germline and somatic pVHL mutations were retrieved from VHLdb and enriched with manual curation the most relevant literature published from 1994 to 2018 (S9 Table). ('VHL', 'Gene', (56, 59)) ('pVHL', 'Gene', (21, 25)) ('VHL', 'Gene', (22, 25)) ('VHL', 'Gene', '7428', (56, 59)) ('VHL', 'Gene', '7428', (22, 25)) ('mutations', 'Var', (26, 35)) ('pVHL', 'Gene', '7428', (21, 25)) 82192 30943211 ccRCC, cysts) were collectively presented as renal disease due to many case report papers describing novel VHL mutations lack a precise typing of cancer sub-type, e.g. ('mutations', 'Var', (111, 120)) ('cancer', 'Disease', (146, 152)) ('cancer', 'Disease', 'MESH:D009369', (146, 152)) ('VHL', 'Gene', '7428', (107, 110)) ('RCC', 'Disease', (2, 5)) ('RCC', 'Phenotype', 'HP:0005584', (2, 5)) ('RCC', 'Disease', 'MESH:C538614', (2, 5)) ('renal disease', 'Disease', (45, 58)) ('cancer', 'Phenotype', 'HP:0002664', (146, 152)) ('renal disease', 'Phenotype', 'HP:0000112', (45, 58)) ('renal disease', 'Disease', 'MESH:D007674', (45, 58)) ('VHL', 'Gene', (107, 110)) 82195 30943211 Missense mutations were mapped and their positions compared using Chimera on three different pVHL 3D-structures representing the VCB complex (PDB codes: 1LM8, 1LQB, 4WQO). ('pVHL', 'Gene', '7428', (93, 97)) ('VCB', 'Chemical', '-', (129, 132)) ('pVHL', 'Gene', (93, 97)) ('Missense mutations', 'Var', (0, 18)) 82196 30943211 Networks of interacting residues affected by mutations were calculated with RING 2.0. ('RING 2', 'Gene', (76, 82)) ('mutations', 'Var', (45, 54)) ('RING 2', 'Gene', '7923', (76, 82)) 82197 30943211 Variation of pVHL sequence features upon mutations was calculated with FELLS. ('mutations', 'Var', (41, 50)) ('pVHL', 'Gene', (13, 17)) ('pVHL', 'Gene', '7428', (13, 17)) 82202 30943211 The effect of the most promising pVHL interaction impaired by the most recurrent pVHL mutations were inspected using the pVHL pathway Petri net model. ('mutations', 'Var', (86, 95)) ('pVHL', 'Gene', '7428', (121, 125)) ('pVHL', 'Gene', (121, 125)) ('pVHL', 'Gene', '7428', (33, 37)) ('pVHL', 'Gene', (33, 37)) ('pVHL', 'Gene', '7428', (81, 85)) ('pVHL', 'Gene', (81, 85)) 82204 30943211 Similarly, the token number of places p_38, p39 and p_60 was increased to simulate loss of pVHL-dependent AKT-1 regulation. ('p_38', 'Var', (38, 42)) ('AKT-1', 'Gene', '207', (106, 111)) ('p39', 'Gene', '8941', (44, 47)) ('p39', 'Gene', (44, 47)) ('p_60', 'Var', (52, 56)) ('pVHL', 'Gene', '7428', (91, 95)) ('pVHL', 'Gene', (91, 95)) ('AKT-1', 'Gene', (106, 111)) ('loss', 'NegReg', (83, 87)) 82205 30943211 Mutations affecting pVHL interaction with ELAVL1, GSK3beta were modeled through knock-outs of the corresponding transition, i.e. ('pVHL', 'Gene', '7428', (20, 24)) ('pVHL', 'Gene', (20, 24)) ('interaction', 'Interaction', (25, 36)) ('ELAVL1', 'Gene', '1994', (42, 48)) ('GSK3beta', 'Gene', (50, 58)) ('GSK3beta', 'Gene', '2932', (50, 58)) ('ELAVL1', 'Gene', (42, 48)) ('Mutations', 'Var', (0, 9)) 82207 30890735 Burden of unique and low prevalence somatic mutations correlates with cancer survival Tumor mutational burden correlates with improved survival and immunotherapy response in some malignancies, and with tumor aggressiveness in others. ('improved', 'PosReg', (126, 134)) ('tumor aggressiveness', 'Disease', (202, 222)) ('aggressiveness', 'Phenotype', 'HP:0000718', (208, 222)) ('cancer', 'Phenotype', 'HP:0002664', (70, 76)) ('malignancies', 'Disease', 'MESH:D009369', (179, 191)) ('malignancies', 'Disease', (179, 191)) ('Tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('tumor aggressiveness', 'Disease', 'MESH:D001523', (202, 222)) ('mutations', 'Var', (44, 53)) ('survival', 'CPA', (135, 143)) ('cancer', 'Disease', (70, 76)) ('cancer', 'Disease', 'MESH:D009369', (70, 76)) ('tumor', 'Phenotype', 'HP:0002664', (202, 207)) 82210 30890735 High TEMMB was associated with improved survival in cutaneous melanoma: hazard ratio (HR) = 0.71 [0.60-0.85], p = 0.0002, urothelial bladder carcinoma: HR = 0.74 [0.59-0.93], p = 0.01, and ovarian carcinoma: HR = 0.80 [0.70-0.93], p = 0.003. ('improved', 'PosReg', (31, 39)) ('carcinoma', 'Phenotype', 'HP:0030731', (141, 150)) ('cutaneous melanoma', 'Disease', (52, 70)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (52, 70)) ('cutaneous melanoma', 'Disease', 'MESH:C562393', (52, 70)) ('TEMMB', 'Chemical', '-', (5, 10)) ('urothelial bladder carcinoma', 'Disease', 'MESH:D001749', (122, 150)) ('carcinoma', 'Phenotype', 'HP:0030731', (197, 206)) ('urothelial bladder carcinoma', 'Disease', (122, 150)) ('ovarian carcinoma', 'Disease', 'MESH:D010051', (189, 206)) ('bladder carcinoma', 'Phenotype', 'HP:0002862', (133, 150)) ('ovarian carcinoma', 'Phenotype', 'HP:0025318', (189, 206)) ('High TEMMB', 'Var', (0, 10)) ('ovarian carcinoma', 'Disease', (189, 206)) ('melanoma', 'Phenotype', 'HP:0002861', (62, 70)) 82211 30890735 High TEMMB was associated with decreased survival in colorectal adenocarcinoma: HR = 1.32 [1.00-1.74], p < 0.05. ('colorectal adenocarcinoma', 'Disease', 'MESH:D015179', (53, 78)) ('TEMMB', 'Chemical', '-', (5, 10)) ('decreased', 'NegReg', (31, 40)) ('colorectal adenocarcinoma', 'Disease', (53, 78)) ('High TEMMB', 'Var', (0, 10)) ('carcinoma', 'Phenotype', 'HP:0030731', (69, 78)) 82213 30890735 In cancers with a low RS, high TEMMB was correlated with better survival outcomes (r = 0.49, p = 0.02). ('high TEMMB', 'Var', (26, 36)) ('survival outcomes', 'CPA', (64, 81)) ('cancers', 'Phenotype', 'HP:0002664', (3, 10)) ('cancers', 'Disease', (3, 10)) ('cancers', 'Disease', 'MESH:D009369', (3, 10)) ('better', 'PosReg', (57, 63)) ('TEMMB', 'Chemical', '-', (31, 36)) ('cancer', 'Phenotype', 'HP:0002664', (3, 9)) 82214 30890735 In conclusion, TEMMB effects on survival depend on recurrent mutation enrichment; tumor types that are highly enriched in passenger mutations show a survival benefit in the setting of high tumor mutational burden. ('tumor', 'Disease', (189, 194)) ('TEMMB', 'Chemical', '-', (15, 20)) ('mutations', 'Var', (132, 141)) ('tumor', 'Disease', 'MESH:D009369', (82, 87)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('tumor', 'Disease', 'MESH:D009369', (189, 194)) ('survival', 'CPA', (149, 157)) ('tumor', 'Disease', (82, 87)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) ('benefit', 'PosReg', (158, 165)) 82217 30890735 Alternatively, highly mutated tumors may develop many novel peptides and thus display more neoantigens, rendering them more susceptible T-cell targets. ('tumors', 'Disease', (30, 36)) ('tumors', 'Disease', 'MESH:D009369', (30, 36)) ('tumors', 'Phenotype', 'HP:0002664', (30, 36)) ('develop', 'PosReg', (41, 48)) ('highly mutated', 'Var', (15, 29)) ('neoantigens', 'MPA', (91, 102)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('more', 'PosReg', (86, 90)) ('peptides', 'MPA', (60, 68)) 82218 30890735 For example, patients with melanomas with a high mutational load showed improved survival with ipilimumab and improved overall survival; patients with highly mutated ovarian cancer had improved postoperative chemotherapy response and higher overall survival. ('melanomas', 'Disease', 'MESH:D008545', (27, 36)) ('improved', 'PosReg', (185, 193)) ('overall', 'MPA', (241, 248)) ('improved', 'PosReg', (110, 118)) ('highly mutated', 'Var', (151, 165)) ('improved', 'PosReg', (72, 80)) ('patients', 'Species', '9606', (13, 21)) ('patients', 'Species', '9606', (137, 145)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (166, 180)) ('melanomas', 'Disease', (27, 36)) ('melanoma', 'Phenotype', 'HP:0002861', (27, 35)) ('ipilimumab', 'Chemical', 'MESH:D000074324', (95, 105)) ('higher', 'PosReg', (234, 240)) ('ovarian cancer', 'Disease', 'MESH:D010051', (166, 180)) ('overall', 'MPA', (119, 126)) ('cancer', 'Phenotype', 'HP:0002664', (174, 180)) ('melanomas', 'Phenotype', 'HP:0002861', (27, 36)) ('ovarian cancer', 'Disease', (166, 180)) 82223 30890735 Furthermore, missense variants specifically have been suggested to be the most frequent class of alterations to carry the potential for neoepitope generation in chronic lymphocytic leukemia malignancy (as compared to frameshift or splice-site variants). ('neoepitope generation', 'MPA', (136, 157)) ('chronic lymphocytic leukemia', 'Phenotype', 'HP:0005550', (161, 189)) ('leukemia', 'Phenotype', 'HP:0001909', (181, 189)) ('chronic lymphocytic leukemia malignancy', 'Disease', (161, 200)) ('chronic lymphocytic leukemia malignancy', 'Disease', 'MESH:D015451', (161, 200)) ('missense variants', 'Var', (13, 30)) ('lymphocytic leukemia malignancy', 'Phenotype', 'HP:0005526', (169, 200)) 82224 30890735 In multiple myeloma, missense mutational load was found to be highly correlated with predicted neoantigen loads. ('multiple myeloma', 'Disease', (3, 19)) ('correlated', 'Reg', (69, 79)) ('neoantigen loads', 'MPA', (95, 111)) ('missense mutational load', 'Var', (21, 45)) ('multiple myeloma', 'Phenotype', 'HP:0006775', (3, 19)) ('multiple myeloma', 'Disease', 'MESH:D009101', (3, 19)) 82225 30890735 Total missense mutational burden across all cohorts ranged from a low of 8 (median) missense mutations among acute myeloid leukemia (LAML) and thymoma (THYM), to 256 median mutations among the skin cutaneous melanoma (SKCM) cohort (Fig. ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (109, 131)) ('leukemia', 'Phenotype', 'HP:0001909', (123, 131)) ('thymoma', 'Disease', 'MESH:D013945', (143, 150)) ('THYM', 'Phenotype', 'HP:0100522', (152, 156)) ('melanoma', 'Phenotype', 'HP:0002861', (208, 216)) ('thymoma', 'Disease', (143, 150)) ('acute myeloid leukemia', 'Disease', (109, 131)) ('mutations', 'Var', (173, 182)) ('skin cutaneous melanoma', 'Disease', 'MESH:C562393', (193, 216)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (115, 131)) ('thymoma', 'Phenotype', 'HP:0100522', (143, 150)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (198, 216)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (109, 131)) ('skin cutaneous melanoma', 'Disease', (193, 216)) ('missense mutations', 'Var', (84, 102)) 82227 30890735 Total (TEMB) and missense (TEMMB) tumor exonic mutational burden were found to be closely correlated among all cohorts: Pearson's r ranged from 0.95-1.00 for all cohorts other than uveal melanoma (UVM) which also revealed a strong positive correlation with r = 0.88 likely due to a small (N = 79) sample size (p < 2.2 x 10-16 for all cohorts) (Fig. ('missense', 'Var', (17, 25)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('tumor', 'Disease', (34, 39)) ('melanoma', 'Phenotype', 'HP:0002861', (187, 195)) ('UVM', 'Phenotype', 'HP:0007716', (197, 200)) ('uveal melanoma', 'Phenotype', 'HP:0007716', (181, 195)) ('uveal melanoma', 'Disease', 'MESH:C536494', (181, 195)) ('tumor', 'Disease', 'MESH:D009369', (34, 39)) ('TEMMB', 'Chemical', '-', (27, 32)) ('uveal melanoma', 'Disease', (181, 195)) 82229 30890735 Male sex was significantly associated with high TEMMB in renal papillary cell carcinoma (KIRP), sarcoma (SARC), and cutaneous melanoma (SKCM). ('high TEMMB', 'Var', (43, 53)) ('sarcoma', 'Phenotype', 'HP:0100242', (96, 103)) ('SARC', 'Phenotype', 'HP:0100242', (105, 109)) ('carcinoma', 'Phenotype', 'HP:0030731', (78, 87)) ('associated', 'Reg', (27, 37)) ('sarcoma', 'Disease', 'MESH:D012509', (96, 103)) ('renal papillary cell carcinoma', 'Disease', 'MESH:C538614', (57, 87)) ('melanoma', 'Phenotype', 'HP:0002861', (126, 134)) ('cutaneous melanoma', 'Disease', (116, 134)) ('TEMMB', 'Chemical', '-', (48, 53)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (116, 134)) ('cutaneous melanoma', 'Disease', 'MESH:C562393', (116, 134)) ('renal papillary cell carcinoma', 'Disease', (57, 87)) ('sarcoma', 'Disease', (96, 103)) 82230 30890735 Female sex was significantly associated with high TEMMB in colorectal adenocarcinoma (COAD) and glioblastoma multiforme (GBM). ('COAD', 'Disease', 'MESH:D029424', (86, 90)) ('colorectal adenocarcinoma', 'Disease', (59, 84)) ('TEMMB', 'Chemical', '-', (50, 55)) ('COAD', 'Disease', (86, 90)) ('colorectal adenocarcinoma', 'Disease', 'MESH:D015179', (59, 84)) ('carcinoma', 'Phenotype', 'HP:0030731', (75, 84)) ('glioblastoma multiforme', 'Disease', (96, 119)) ('glioblastoma', 'Phenotype', 'HP:0012174', (96, 108)) ('high TEMMB', 'Var', (45, 55)) ('glioblastoma multiforme', 'Disease', 'MESH:D005909', (96, 119)) 82233 30890735 High TEMMB correlated with improved survival in skin cutaneous melanoma (SKCM): HR = 0.71 [0.60-0.85], p = 0.0002, bladder urothelial carcinoma (BLCA): HR = 0.74 [0.59-0.93], p = 0.01, and ovarian carcinoma (OV): HR = 0.80 [0.70-0.93], p = 0.003. ('skin cutaneous melanoma', 'Disease', 'MESH:C562393', (48, 71)) ('improved', 'PosReg', (27, 35)) ('OV', 'Phenotype', 'HP:0025318', (208, 210)) ('bladder urothelial carcinoma', 'Disease', 'MESH:D001749', (115, 143)) ('TEMMB', 'Chemical', '-', (5, 10)) ('melanoma', 'Phenotype', 'HP:0002861', (63, 71)) ('survival', 'MPA', (36, 44)) ('skin cutaneous melanoma', 'Disease', (48, 71)) ('bladder urothelial carcinoma', 'Disease', (115, 143)) ('carcinoma', 'Phenotype', 'HP:0030731', (134, 143)) ('carcinoma', 'Phenotype', 'HP:0030731', (197, 206)) ('ovarian carcinoma', 'Disease', 'MESH:D010051', (189, 206)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (53, 71)) ('ovarian carcinoma', 'Phenotype', 'HP:0025318', (189, 206)) ('High TEMMB', 'Var', (0, 10)) ('ovarian carcinoma', 'Disease', (189, 206)) 82234 30890735 High TEMMB was associated with decreased survival in colorectal adenocarcinoma (COAD): HR = 1.32 [1.00-1.74], p < 0.05 (p = 0.0497). ('colorectal adenocarcinoma', 'Disease', 'MESH:D015179', (53, 78)) ('TEMMB', 'Chemical', '-', (5, 10)) ('decreased', 'NegReg', (31, 40)) ('COAD', 'Disease', (80, 84)) ('colorectal adenocarcinoma', 'Disease', (53, 78)) ('High TEMMB', 'Var', (0, 10)) ('carcinoma', 'Phenotype', 'HP:0030731', (69, 78)) ('COAD', 'Disease', 'MESH:D029424', (80, 84)) 82236 30890735 To characterize the somatic mutational profile of each cancer, we determined the relative burden of recurrent mutations to total mutations within each cohort, expressed as a recurrence score (RS). ('cancer', 'Disease', 'MESH:D009369', (55, 61)) ('cancer', 'Phenotype', 'HP:0002664', (55, 61)) ('mutations', 'Var', (110, 119)) ('cancer', 'Disease', (55, 61)) 82238 30890735 Several cohorts, notably adrenocortical carcinoma (ACC), acute myeloid leukemia (LAML), brain lower grade glioma (LGG), pheochromocytoma and paraganglioma (PCPG), thyroid carcinoma (THCA), thymoma (THYM), and uveal melanoma (UVM), revealed mutations occurring at high prevalence among the sequenced population. ('melanoma', 'Phenotype', 'HP:0002861', (215, 223)) ('UVM', 'Phenotype', 'HP:0007716', (225, 228)) ('glioma', 'Disease', (148, 154)) ('THCA', 'Phenotype', 'HP:0002890', (182, 186)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (63, 79)) ('glioma', 'Disease', 'MESH:D005910', (148, 154)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (57, 79)) ('uveal melanoma', 'Disease', 'MESH:C536494', (209, 223)) ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (57, 79)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (163, 180)) ('uveal melanoma', 'Disease', (209, 223)) ('adrenocortical carcinoma', 'Phenotype', 'HP:0006744', (25, 49)) ('leukemia', 'Phenotype', 'HP:0001909', (71, 79)) ('mutations', 'Var', (240, 249)) ('thyroid carcinoma', 'Disease', (163, 180)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (120, 154)) ('carcinoma', 'Phenotype', 'HP:0030731', (40, 49)) ('glioma', 'Phenotype', 'HP:0009733', (148, 154)) ('glioma', 'Disease', (106, 112)) ('paraganglioma', 'Phenotype', 'HP:0002668', (141, 154)) ('uveal melanoma', 'Phenotype', 'HP:0007716', (209, 223)) ('adrenocortical carcinoma', 'Disease', 'MESH:D018268', (25, 49)) ('glioma', 'Disease', 'MESH:D005910', (106, 112)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (163, 180)) ('thymoma', 'Disease', 'MESH:D013945', (189, 196)) ('carcinoma', 'Phenotype', 'HP:0030731', (171, 180)) ('adrenocortical carcinoma', 'Disease', (25, 49)) ('THYM', 'Phenotype', 'HP:0100522', (198, 202)) ('glioma', 'Phenotype', 'HP:0009733', (106, 112)) ('acute myeloid leukemia', 'Disease', (57, 79)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (120, 136)) ('thymoma', 'Disease', (189, 196)) ('ACC', 'Phenotype', 'HP:0006744', (51, 54)) ('thymoma', 'Phenotype', 'HP:0100522', (189, 196)) 82239 30890735 The recurrent mutations can be readily visualized as sharp peaks in the cancers' mutational profiles. ('cancer', 'Phenotype', 'HP:0002664', (72, 78)) ('cancers', 'Phenotype', 'HP:0002664', (72, 79)) ('cancers', 'Disease', (72, 79)) ('cancers', 'Disease', 'MESH:D009369', (72, 79)) ('mutations', 'Var', (14, 23)) 82242 30890735 In the adrenocortical carcinoma (ACC) cohort, 0.29% of all pooled missense mutations were in the ZNF517 gene (p.V349A), and 0.29% of missense mutations were recurrent GARS (p.P42A) mutations. ('adrenocortical carcinoma', 'Disease', 'MESH:D018268', (7, 31)) ('ZNF517', 'Gene', '340385', (97, 103)) ('ZNF517', 'Gene', (97, 103)) ('missense mutations', 'Var', (133, 151)) ('ACC', 'Phenotype', 'HP:0006744', (33, 36)) ('missense mutations', 'Var', (66, 84)) ('p.P42A', 'Mutation', 'rs1049402', (173, 179)) ('p.V349A', 'Mutation', 'rs2976653', (110, 117)) ('adrenocortical carcinoma', 'Disease', (7, 31)) ('GARS', 'Gene', '2617', (167, 171)) ('carcinoma', 'Phenotype', 'HP:0030731', (22, 31)) ('GARS', 'Gene', (167, 171)) ('p.P42A', 'Var', (173, 179)) ('adrenocortical carcinoma', 'Phenotype', 'HP:0006744', (7, 31)) 82243 30890735 In uveal melanoma (UVM) cohort, 2.54% were recurrent GNA11 (p.Q209P) mutations, 2.01% were recurrent GNAQ p.Q209P, and 0.75% GNAQ p.Q1209L. ('p.Q1209L', 'Var', (130, 138)) ('uveal melanoma', 'Disease', 'MESH:C536494', (3, 17)) ('GNA11', 'Gene', (53, 58)) ('melanoma', 'Phenotype', 'HP:0002861', (9, 17)) ('GNA11', 'Gene', '2767', (53, 58)) ('p.Q209P', 'Mutation', 'rs1057519742', (106, 113)) ('p.Q209P', 'Mutation', 'rs1057519742', (60, 67)) ('UVM', 'Phenotype', 'HP:0007716', (19, 22)) ('p.Q1209L', 'Mutation', 'p.Q1209L', (130, 138)) ('p.Q209P', 'Var', (106, 113)) ('uveal melanoma', 'Phenotype', 'HP:0007716', (3, 17)) ('uveal melanoma', 'Disease', (3, 17)) 82244 30890735 In thyroid carcinoma (THCA), 5.23% were BRAF p.V600E, 0.65% were NRAS p.Q61R, and 0.25% HRAS p.Q61R. ('p.Q61R', 'Mutation', 'rs755829919', (70, 76)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (3, 20)) ('thyroid carcinoma', 'Disease', (3, 20)) ('THCA', 'Phenotype', 'HP:0002890', (22, 26)) ('p.Q61R', 'Mutation', 'rs755829919', (93, 99)) ('p.V600E', 'Mutation', 'p.V600E', (45, 52)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (3, 20)) ('p.V600E', 'Var', (45, 52)) ('carcinoma', 'Phenotype', 'HP:0030731', (11, 20)) 82245 30890735 In the acute myeloid leukemia (LAML) cohort, 1.38% of missense mutations were in DNMT3A gene (p.R882H), 1.05% were IDH2 p.R140Q, and 0.79% were IDH1 p.R132C. ('p.R882H', 'Mutation', 'rs147001633', (94, 101)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (7, 29)) ('leukemia', 'Phenotype', 'HP:0001909', (21, 29)) ('missense mutations', 'Var', (54, 72)) ('DNMT3A', 'Gene', (81, 87)) ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (7, 29)) ('DNMT3A', 'Gene', '1788', (81, 87)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (13, 29)) ('p.R140Q', 'Var', (120, 127)) ('p.R132C', 'Mutation', 'rs121913499', (149, 156)) ('p.R140Q', 'Mutation', 'rs121913502', (120, 127)) ('acute myeloid leukemia', 'Disease', (7, 29)) 82246 30890735 In pheochromocytoma and paraganglioma (PCPG), 0.64% of mutations were recurrent HRAS p.Q61R, and 0.36% were CHEK2 p.K152E. ('p.Q61R', 'Var', (85, 91)) ('mutations', 'Var', (55, 64)) ('paraganglioma', 'Phenotype', 'HP:0002668', (24, 37)) ('CHEK2', 'Gene', '11200', (108, 113)) ('p.K152E', 'Mutation', 'rs74751600', (114, 121)) ('glioma', 'Phenotype', 'HP:0009733', (31, 37)) ('p.Q61R', 'Mutation', 'rs755829919', (85, 91)) ('CHEK2', 'Gene', (108, 113)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (3, 19)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (3, 37)) 82248 30890735 Cancers with low RS tended to exhibit survival benefit (HR < 1) with increased adjusted-TEMMB. ('adjusted-TEMMB', 'Var', (79, 93)) ('increased', 'PosReg', (69, 78)) ('TEMMB', 'Chemical', '-', (88, 93)) ('Cancers', 'Disease', (0, 7)) ('Cancers', 'Phenotype', 'HP:0002664', (0, 7)) ('Cancer', 'Phenotype', 'HP:0002664', (0, 6)) ('Cancers', 'Disease', 'MESH:D009369', (0, 7)) ('survival benefit', 'CPA', (38, 54)) 82249 30890735 Conversely, cancers with high RS were observed to have a decrease in survival (HR > 1) with increased adjusted-TEMMB. ('decrease', 'NegReg', (57, 65)) ('cancers', 'Disease', 'MESH:D009369', (12, 19)) ('cancers', 'Phenotype', 'HP:0002664', (12, 19)) ('high RS', 'Var', (25, 32)) ('cancers', 'Disease', (12, 19)) ('increased', 'PosReg', (92, 101)) ('cancer', 'Phenotype', 'HP:0002664', (12, 18)) ('adjusted-TEMMB', 'Var', (102, 116)) ('TEMMB', 'Chemical', '-', (111, 116)) ('survival', 'MPA', (69, 77)) 82250 30890735 Exonic missense mutation distribution displays considerable variability among cancers studied in TCGA. ('Exonic missense mutation', 'Var', (0, 24)) ('cancers', 'Phenotype', 'HP:0002664', (78, 85)) ('cancers', 'Disease', 'MESH:D009369', (78, 85)) ('cancers', 'Disease', (78, 85)) ('cancer', 'Phenotype', 'HP:0002664', (78, 84)) 82252 30890735 Somatic missense mutations strongly contribute to the generation of novel tumor epitopes. ('tumor epitopes', 'Disease', (74, 88)) ('tumor epitopes', 'Disease', 'MESH:D009369', (74, 88)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('missense mutations', 'Var', (8, 26)) 82257 30890735 Interestingly, low tumor stage was correlated (after Bonferroni adjustment) with high TEMMB in breast carcinoma, colon and rectal adenocarcinoma, and uveal melanoma. ('breast carcinoma', 'Disease', 'MESH:D001943', (95, 111)) ('melanoma', 'Phenotype', 'HP:0002861', (156, 164)) ('high TEMMB', 'Var', (81, 91)) ('carcinoma', 'Phenotype', 'HP:0030731', (135, 144)) ('low tumor', 'Disease', 'MESH:D009800', (15, 24)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('low tumor', 'Disease', (15, 24)) ('breast carcinoma', 'Phenotype', 'HP:0003002', (95, 111)) ('uveal melanoma', 'Phenotype', 'HP:0007716', (150, 164)) ('uveal melanoma', 'Disease', (150, 164)) ('uveal melanoma', 'Disease', 'MESH:C536494', (150, 164)) ('colon and rectal adenocarcinoma', 'Disease', 'MESH:D012004', (113, 144)) ('carcinoma', 'Phenotype', 'HP:0030731', (102, 111)) ('TEMMB', 'Chemical', '-', (86, 91)) ('breast carcinoma', 'Disease', (95, 111)) 82264 30890735 Given the high propensity for rapid metastasis in uveal melanoma, it is possible that intercepting such tumors at an early stage may partially be explained by a higher mutational load and thus more favorable immune response. ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('melanoma', 'Phenotype', 'HP:0002861', (56, 64)) ('mutational load', 'Var', (168, 183)) ('tumors', 'Phenotype', 'HP:0002664', (104, 110)) ('uveal melanoma', 'Phenotype', 'HP:0007716', (50, 64)) ('uveal melanoma', 'Disease', 'MESH:C536494', (50, 64)) ('tumors', 'Disease', (104, 110)) ('tumors', 'Disease', 'MESH:D009369', (104, 110)) ('higher', 'PosReg', (161, 167)) ('uveal melanoma', 'Disease', (50, 64)) 82265 30890735 Driver mutations impart tumor growth advantage and are positively selected in cancer evolution, while biologically inert passengers accumulate without directional selection over the tumor growth timespan. ('tumor', 'Phenotype', 'HP:0002664', (24, 29)) ('cancer', 'Phenotype', 'HP:0002664', (78, 84)) ('tumor', 'Disease', (182, 187)) ('tumor', 'Disease', (24, 29)) ('cancer', 'Disease', (78, 84)) ('cancer', 'Disease', 'MESH:D009369', (78, 84)) ('tumor', 'Disease', 'MESH:D009369', (182, 187)) ('tumor', 'Disease', 'MESH:D009369', (24, 29)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) ('mutations', 'Var', (7, 16)) 82266 30890735 Many established bioinformatics methods to study drivers rely on techniques that identify recurrent mutations, and thus we quantified recurrent and non-recurrent mutations to serve as proxy for relative amounts of drivers and passengers within a cancer type. ('cancer', 'Disease', (246, 252)) ('mutations', 'Var', (100, 109)) ('cancer', 'Disease', 'MESH:D009369', (246, 252)) ('cancer', 'Phenotype', 'HP:0002664', (246, 252)) 82267 30890735 Our results suggest high TEMMB tends to confer survival benefit in cancers with more non-recurrent (likely passenger) mutations, and decreased survival in cancers with high recurrent (likely driver) fractions. ('cancers', 'Phenotype', 'HP:0002664', (67, 74)) ('cancers', 'Disease', (67, 74)) ('cancers', 'Disease', 'MESH:D009369', (67, 74)) ('cancer', 'Phenotype', 'HP:0002664', (155, 161)) ('mutations', 'Var', (118, 127)) ('benefit', 'PosReg', (56, 63)) ('cancer', 'Phenotype', 'HP:0002664', (67, 73)) ('survival', 'MPA', (47, 55)) ('cancers', 'Phenotype', 'HP:0002664', (155, 162)) ('cancers', 'Disease', 'MESH:D009369', (155, 162)) ('TEMMB', 'Chemical', '-', (25, 30)) ('cancers', 'Disease', (155, 162)) ('decreased', 'NegReg', (133, 142)) 82268 30890735 We propose that in malignancies with large enrichments of non-recurrent mutations, high TEMMB marks a high passenger count, and increasing passenger mutation load increases neoantigen presentation without imparting additional growth advantage or aggressiveness. ('aggressiveness', 'Disease', (246, 260)) ('malignancies', 'Disease', (19, 31)) ('TEMMB', 'Chemical', '-', (88, 93)) ('passenger mutation load', 'Var', (139, 162)) ('aggressiveness', 'Phenotype', 'HP:0000718', (246, 260)) ('increases', 'PosReg', (163, 172)) ('aggressiveness', 'Disease', 'MESH:D001523', (246, 260)) ('increasing', 'PosReg', (128, 138)) ('malignancies', 'Disease', 'MESH:D009369', (19, 31)) ('neoantigen presentation', 'MPA', (173, 196)) 82269 30890735 Our observed benefit with high TEMMB supports literature findings for melanoma and ovarian carcinoma. ('melanoma', 'Disease', (70, 78)) ('ovarian carcinoma', 'Disease', (83, 100)) ('melanoma', 'Disease', 'MESH:D008545', (70, 78)) ('high TEMMB', 'Var', (26, 36)) ('ovarian carcinoma', 'Phenotype', 'HP:0025318', (83, 100)) ('carcinoma', 'Phenotype', 'HP:0030731', (91, 100)) ('ovarian carcinoma', 'Disease', 'MESH:D010051', (83, 100)) ('melanoma', 'Phenotype', 'HP:0002861', (70, 78)) ('TEMMB', 'Chemical', '-', (31, 36)) ('benefit', 'PosReg', (13, 20)) 82272 30890735 Recent work has suggested a "double-edged" effect of increased DNA variants, noting that on the one hand, high DNA variation increases accumulation of drivers which are beneficial to tumor adaptation; conversely, high concurrent passenger loads may outweigh the driver effects. ('tumor', 'Disease', 'MESH:D009369', (183, 188)) ('high', 'Var', (106, 110)) ('tumor', 'Phenotype', 'HP:0002664', (183, 188)) ('tumor', 'Disease', (183, 188)) ('accumulation', 'MPA', (135, 147)) 82285 30890735 Cancers with higher proportions of non-recurrent and thus likely passenger mutations showed survival benefit with high TEMMB, while cancers with higher recurrent mutation fractions (likely drivers) revealed a decrease in survival. ('cancers', 'Disease', (132, 139)) ('cancers', 'Disease', 'MESH:D009369', (132, 139)) ('Cancers', 'Disease', (0, 7)) ('Cancers', 'Phenotype', 'HP:0002664', (0, 7)) ('decrease', 'NegReg', (209, 217)) ('TEMMB', 'Chemical', '-', (119, 124)) ('cancer', 'Phenotype', 'HP:0002664', (132, 138)) ('benefit', 'PosReg', (101, 108)) ('Cancer', 'Phenotype', 'HP:0002664', (0, 6)) ('Cancers', 'Disease', 'MESH:D009369', (0, 7)) ('survival', 'MPA', (92, 100)) ('cancers', 'Phenotype', 'HP:0002664', (132, 139)) ('high TEMMB', 'Var', (114, 124)) 82286 30890735 Mutational signatures for some cancers might contribute significantly to overall TEMMB (e.g. ('cancer', 'Phenotype', 'HP:0002664', (31, 37)) ('TEMMB', 'Disease', (81, 86)) ('TEMMB', 'Chemical', '-', (81, 86)) ('contribute', 'Reg', (45, 55)) ('cancers', 'Phenotype', 'HP:0002664', (31, 38)) ('Mutational signatures', 'Var', (0, 21)) ('cancers', 'Disease', (31, 38)) ('cancers', 'Disease', 'MESH:D009369', (31, 38)) 82305 30890735 We aggregated all nonsynonymous missense mutations among all individuals in each cancer. ('cancer', 'Phenotype', 'HP:0002664', (81, 87)) ('nonsynonymous missense mutations', 'Var', (18, 50)) ('cancer', 'Disease', (81, 87)) ('cancer', 'Disease', 'MESH:D009369', (81, 87)) 82306 30890735 A somatic recurrence score (RS) was calculated as the fraction of total mutations in the cohort's pool comprised by recurrent mutations as defined above: A RS was assigned to each cancer type, and the correlation between log10-adjusted survival HR and log10-adjusted RS was computed with Pearson's correlation. ('cancer', 'Disease', 'MESH:D009369', (180, 186)) ('cancer', 'Phenotype', 'HP:0002664', (180, 186)) ('cancer', 'Disease', (180, 186)) ('mutations', 'Var', (126, 135)) 82363 30915305 Paragangliomas that originate from parasympathetic tissue are usually non-functional, but tumors of sympathetic origin often are functional and precaution needs to be taken before resection because manipulation of such tumors can lead to catecholamine leak or surges causing hemodynamic instability and cardiovascular collapse. ('hemodynamic instability', 'MPA', (275, 298)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (0, 14)) ('tumors', 'Disease', 'MESH:D009369', (90, 96)) ('cardiovascular collapse', 'Phenotype', 'HP:0030149', (303, 326)) ('tumors', 'Phenotype', 'HP:0002664', (219, 225)) ('manipulation', 'Var', (198, 210)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) ('tumor', 'Phenotype', 'HP:0002664', (219, 224)) ('tumors', 'Disease', (219, 225)) ('man', 'Species', '9606', (198, 201)) ('tumors', 'Phenotype', 'HP:0002664', (90, 96)) ('catecholamine leak', 'MPA', (238, 256)) ('Paragangliomas', 'Disease', (0, 14)) ('Paragangliomas', 'Disease', 'MESH:D010235', (0, 14)) ('cardiovascular', 'Disease', (303, 317)) ('tumors', 'Disease', 'MESH:D009369', (219, 225)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('lead to', 'Reg', (230, 237)) ('catecholamine', 'Chemical', 'MESH:D002395', (238, 251)) ('tumors', 'Disease', (90, 96)) ('surges', 'MPA', (260, 266)) 82423 27278528 In this study, for a tumour size >4 cm or <=4 cm, the proportion of having a malignant tumour was 56/229 and 1/249, respectively (P < 0.001). ('tumour', 'Disease', (87, 93)) ('tumour', 'Phenotype', 'HP:0002664', (21, 27)) ('tumour', 'Disease', 'MESH:D009369', (21, 27)) ('malignant tumour', 'Disease', 'MESH:D009369', (77, 93)) ('tumour', 'Phenotype', 'HP:0002664', (87, 93)) ('tumour', 'Disease', 'MESH:D009369', (87, 93)) ('tumour', 'Disease', (21, 27)) ('malignant tumour', 'Disease', (77, 93)) ('<=4 cm', 'Var', (42, 48)) 82426 27278528 For tumour size >5.4 cm or <=5.4 cm, the proportion of having a malignant tumour was 53/302 and 4/176, respectively (P < 0.001). ('tumour', 'Disease', 'MESH:D009369', (74, 80)) ('tumour', 'Phenotype', 'HP:0002664', (4, 10)) ('tumour', 'Disease', (74, 80)) ('malignant tumour', 'Disease', 'MESH:D009369', (64, 80)) ('tumour', 'Disease', 'MESH:D009369', (4, 10)) ('malignant tumour', 'Disease', (64, 80)) ('tumour', 'Disease', (4, 10)) ('tumour', 'Phenotype', 'HP:0002664', (74, 80)) ('<=5.4 cm', 'Var', (27, 35)) 82533 27212797 Pheochromocytoma of the Adrenal Gland Scaled Scores are based on 12 criteria as follows: large nests or diffuse growth, 2 points; central (middle of the large nests) or confluent tumor necrosis, 2 points; high cellularity, 2 points; cellular monotony, 2 points; tumor cell spindling, 2 points; > 3 mitotic figures/10 high power fields, 2 points; atypical mitotic figure(s), 2 points; extension into adipose tissue, 2 points; vascular invasion, 1 point; capsular invasion, 1 point; profound nuclear pleomorphism, 1 point; and nuclear hyperchromasia, 1 point. ('Pheochromocytoma', 'Disease', (0, 16)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('tumor', 'Phenotype', 'HP:0002664', (262, 267)) ('tumor necrosis', 'Disease', (179, 193)) ('tumor', 'Disease', (262, 267)) ('atypical', 'Var', (346, 354)) ('hyperchromasia', 'Disease', 'None', (533, 547)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('tumor', 'Disease', 'MESH:D009369', (179, 184)) ('tumor', 'Phenotype', 'HP:0002664', (179, 184)) ('tumor', 'Disease', 'MESH:D009369', (262, 267)) ('tumor necrosis', 'Disease', 'MESH:D009336', (179, 193)) ('hyperchromasia', 'Disease', (533, 547)) ('vascular invasion', 'CPA', (425, 442)) ('tumor', 'Disease', (179, 184)) 82545 25946206 The majority of PHEO/PGL cases are known as sporadic tumors while mutations in genes including VHL (von Hippel-Lindau), RET (Multiple Endocrine Neoplasia type 2), NF1 (Neurofibromatosis type 1), SDH (Succinate Dehydrogenase subunits A, B, C and D) and cofactor SDHAF2, MAX (MYC associated factor X), HIF2A (hypoxia-inducible factor 2A), FH (fumarate hydratase) and TMEM127 (transmembrane protein 127) account for approximately 40% of tumors. ('mutations', 'Var', (66, 75)) ('transmembrane protein 127', 'Gene', (374, 399)) ('sporadic tumors', 'Disease', 'MESH:D009369', (44, 59)) ('MYC associated factor X', 'Gene', (274, 297)) ('VHL', 'Gene', '7428', (95, 98)) ('MAX', 'Gene', '4149', (269, 272)) ('hypoxia-inducible factor 2A', 'Gene', (307, 334)) ('SDH', 'Gene', (195, 198)) ('fumarate hydratase', 'Gene', '2271', (341, 359)) ('tumors', 'Phenotype', 'HP:0002664', (434, 440)) ('tumors', 'Phenotype', 'HP:0002664', (53, 59)) ('RET', 'Gene', '5979', (120, 123)) ('SDH', 'Gene', '6390', (261, 264)) ('NF1', 'Gene', '4763', (163, 166)) ('FH', 'Gene', '2271', (337, 339)) ('tumor', 'Phenotype', 'HP:0002664', (434, 439)) ('von Hippel-Lindau', 'Gene', (100, 117)) ('TMEM127', 'Gene', (365, 372)) ('MYC associated factor X', 'Gene', '4149', (274, 297)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (168, 185)) ('tumors', 'Disease', (434, 440)) ('tumors', 'Disease', (53, 59)) ('Multiple Endocrine Neoplasia type 2', 'Disease', 'MESH:D018813', (125, 160)) ('NF1', 'Gene', (163, 166)) ('SDHAF2', 'Gene', '54949', (261, 267)) ('SDHAF2', 'Gene', (261, 267)) ('MAX', 'Gene', (269, 272)) ('hypoxia-inducible factor 2A', 'Gene', '2034', (307, 334)) ('SDH', 'Gene', (261, 264)) ('Neoplasia', 'Phenotype', 'HP:0002664', (144, 153)) ('RET', 'Gene', (120, 123)) ('TMEM127', 'Gene', '55654', (365, 372)) ('Neurofibromatosis type 1', 'Gene', '4763', (168, 192)) ('tumors', 'Disease', 'MESH:D009369', (434, 440)) ('von Hippel-Lindau', 'Gene', '7428', (100, 117)) ('fumarate hydratase', 'Gene', (341, 359)) ('tumors', 'Disease', 'MESH:D009369', (53, 59)) ('SDH', 'Gene', '6390', (195, 198)) ('VHL', 'Gene', (95, 98)) ('transmembrane protein 127', 'Gene', '55654', (374, 399)) ('Multiple Endocrine Neoplasia type 2', 'Disease', (125, 160)) ('Endocrine Neoplasia', 'Phenotype', 'HP:0100568', (134, 153)) ('HIF2A', 'Gene', '2034', (300, 305)) ('sporadic tumors', 'Disease', (44, 59)) ('Neurofibromatosis type 1', 'Gene', (168, 192)) ('HIF2A', 'Gene', (300, 305)) 82551 25946206 In the context of the PHEO-exclusion diagnosis tests performed in our laboratory, we have noticed lower E and metanephrine (MN) plasma concentrations in patients affected by a PGL compared to PHEO. ('PGL', 'Var', (176, 179)) ('metanephrine', 'Chemical', 'MESH:D008676', (110, 122)) ('lower', 'NegReg', (98, 103)) ('patients', 'Species', '9606', (153, 161)) 82560 25946206 Among the 63 patients; 47 were affected by a sporadic tumor and 16 by genetic associated tumors (6 had mutations on RET gene, 4 on SDHB, 3 on NF1 and 3 on VHL. ('NF1', 'Gene', '4763', (142, 145)) ('tumors', 'Disease', (89, 95)) ('patients', 'Species', '9606', (13, 21)) ('tumor', 'Disease', 'MESH:D009369', (54, 59)) ('affected', 'Reg', (31, 39)) ('RET', 'Gene', (116, 119)) ('NF1', 'Gene', (142, 145)) ('VHL', 'Gene', (155, 158)) ('mutations', 'Var', (103, 112)) ('tumors', 'Disease', 'MESH:D009369', (89, 95)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) ('tumor', 'Disease', (89, 94)) ('SDHB', 'Gene', '6390', (131, 135)) ('VHL', 'Gene', '7428', (155, 158)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) ('RET', 'Gene', '5979', (116, 119)) ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('SDHB', 'Gene', (131, 135)) ('tumor', 'Disease', (54, 59)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) 82583 25946206 We observed a lower intra-tumoral concentration of both E and NE per gram of tissue in PGL compared with PHEO (by 25.6 and 4.2 fold respectively, P<0.01 and P = 0.02) (Fig 2A). ('lower', 'NegReg', (14, 19)) ('intra-tumoral', 'Disease', 'MESH:D009369', (20, 33)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('PGL', 'Var', (87, 90)) ('intra-tumoral', 'Disease', (20, 33)) 82594 25946206 From a genetic point of view, among the 13 patients affected by a PGL from our cohort, 4 tumors were the consequence of an SDHB mutation and 5 were not SDHB or VHL related. ('tumors', 'Disease', (89, 95)) ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('SDHB', 'Gene', (152, 156)) ('VHL', 'Gene', (160, 163)) ('patients', 'Species', '9606', (43, 51)) ('tumors', 'Disease', 'MESH:D009369', (89, 95)) ('SDHB', 'Gene', '6390', (123, 127)) ('VHL', 'Gene', '7428', (160, 163)) ('SDHB', 'Gene', (123, 127)) ('mutation', 'Var', (128, 136)) ('consequence of', 'Reg', (105, 119)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('SDHB', 'Gene', '6390', (152, 156)) 82595 25946206 NE and E tissue concentration were not statistically different between patients affected by a PGL with an SDHB mutation and patients with a PGL not arising from an SDHB or VHL mutation. ('mutation', 'Var', (111, 119)) ('patients', 'Species', '9606', (124, 132)) ('patients', 'Species', '9606', (71, 79)) ('SDHB', 'Gene', '6390', (106, 110)) ('SDHB', 'Gene', '6390', (164, 168)) ('SDHB', 'Gene', (106, 110)) ('VHL', 'Gene', (172, 175)) ('SDHB', 'Gene', (164, 168)) ('affected', 'Reg', (80, 88)) ('VHL', 'Gene', '7428', (172, 175)) 82603 25946206 Hitherto no report has directly shown the correlation between PNMT protein expression and E concentration in PHEO/PGL tissue, and it remained to be demonstrated in our study that low PNMT is directly correlated with low E synthesis independently of tumor localisation. ('tumor', 'Disease', 'MESH:D009369', (249, 254)) ('tumor', 'Phenotype', 'HP:0002664', (249, 254)) ('tumor', 'Disease', (249, 254)) ('low', 'NegReg', (216, 219)) ('low', 'Var', (179, 182)) ('E concentration', 'MPA', (90, 105)) ('E synthesis', 'MPA', (220, 231)) 82609 25946206 In PHEO cells dexamethasone induced a 2.8 fold upregulation of TH compared with non dexamethasone-incubated cells at 24 hrs (P = 0.002), no effect was recorded for DBH and PNMT (Fig 8B) and between mixed (n = 6) vs. noradrenergic PHEO (n = 3) regarding gene transcription for TH, DBH and PNMT after 24 hrs incubation with dexamethasone. ('dexamethasone', 'Chemical', 'MESH:D003907', (322, 335)) ('dexamethasone', 'Var', (14, 27)) ('TH', 'Gene', '7054', (276, 278)) ('TH', 'Gene', '7054', (63, 65)) ('upregulation', 'PosReg', (47, 59)) ('dexamethasone', 'Chemical', 'MESH:D003907', (14, 27)) ('dexamethasone', 'Chemical', 'MESH:D003907', (84, 97)) 82625 25946206 Hypermethylation of PNMT has been recently demonstrated in SDH and VHL-related tumors that led to a downregulation of mRNA synthesis. ('SDH', 'Gene', '6390', (59, 62)) ('VHL', 'Gene', '7428', (67, 70)) ('mRNA synthesis', 'MPA', (118, 132)) ('Hypermethylation', 'Var', (0, 16)) ('downregulation', 'NegReg', (100, 114)) ('PNMT', 'Gene', (20, 24)) ('SDH', 'Gene', (59, 62)) ('tumors', 'Disease', (79, 85)) ('tumors', 'Disease', 'MESH:D009369', (79, 85)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('demonstrated', 'Reg', (43, 55)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) ('VHL', 'Gene', (67, 70)) 82859 33628579 Hence, a variety of HILIC-type columns were screened, including Atlantis HILIC silica (150 mm x 2.1 mm, 5 mum) and XBridge Amide (50 mm x 2.1 mm, 3.5 mum) from Waters (Milford, MA, USA), Luna Diol (100 mm x 2.1 mm, 5 mum) from Phenomenex (Torrance, CA, USA), Cosmosil HILIC (100 mm x 2.0 mm, 5 mum) from Nacalai tesque (Kyoto, Japan), and ZIC-HILIC (150 mm x 2.1 mm, 3.5 mum). ('HILIC-type columns', 'Disease', 'MESH:C536342', (20, 38)) ('HILIC-type columns', 'Disease', (20, 38)) ('ZIC-HILIC', 'Disease', 'None', (339, 348)) ('Atlantis HILIC silica', 'Disease', (64, 85)) ('Cosmosil HILIC', 'Disease', (259, 273)) ('Atlantis HILIC silica', 'Disease', 'None', (64, 85)) ('100 mm x 2.0 mm', 'Var', (275, 290)) ('Cosmosil HILIC', 'Disease', 'None', (259, 273)) ('ZIC-HILIC', 'Disease', (339, 348)) 82899 33628579 Among 24 patients with PPGL, plasma concentrations of MN ranged from 17.0 to 3161.4 pg/mL (median 52.1) and NMN from 41.6 to 26815.1 pg/mL (median 1273.9). ('patients', 'Species', '9606', (9, 17)) ('NMN', 'Chemical', 'MESH:D009647', (108, 111)) ('NMN', 'MPA', (108, 111)) ('PPGL', 'Chemical', '-', (23, 27)) ('PPGL', 'Var', (23, 27)) 82900 33628579 Plasma outputs of NMN among patients with PPGL showed a medium 30-fold increase above medium levels in the control patients and a medium 2.1-fold increase for MN. ('patients', 'Species', '9606', (115, 123)) ('Plasma outputs', 'MPA', (0, 14)) ('NMN', 'Chemical', 'MESH:D009647', (18, 21)) ('increase', 'PosReg', (71, 79)) ('PPGL', 'Chemical', '-', (42, 46)) ('patients', 'Species', '9606', (28, 36)) ('PPGL', 'Var', (42, 46)) 82901 33628579 The area under the receiver operating characteristic (ROC) curve was 0.979 +- 0.021 for NMN and 0.848 +- 0.0047 for MN (Figure 5). ('NMN', 'Chemical', 'MESH:D009647', (88, 91)) ('0.848 +-', 'Var', (96, 104)) ('NMN', 'MPA', (88, 91)) 82915 33138083 Performing exome sequencing analysis, we identified a KIF1B T827I mutation, and the oncogenic NRAS Q61K mutation. ('KIF1B', 'Gene', '23095', (54, 59)) ('T827I', 'Var', (60, 65)) ('T827I', 'Mutation', 'rs121908162', (60, 65)) ('Q61K', 'Mutation', 'rs1219132549', (99, 103)) ('KIF1B', 'Gene', (54, 59)) 82916 33138083 While KIF1B mutations are recurring somatic events in PPGLs, NRAS mutations have hitherto not been detected in PPGLs. ('KIF1B', 'Gene', (6, 11)) ('KIF1B', 'Gene', '23095', (6, 11)) ('mutations', 'Var', (12, 21)) ('PPGLs', 'Chemical', '-', (54, 59)) ('PPGLs', 'Disease', (54, 59)) ('PPGLs', 'Chemical', '-', (111, 116)) 82925 33138083 found that PPGL exhibiting altered WNT-signalling or MAX mutations might represent two additional mRNA subtypes. ('PPGL', 'Gene', (11, 15)) ('mutations', 'Var', (57, 66)) ('PPGL', 'Chemical', '-', (11, 15)) 82926 33138083 Pseudohypoxia, i.e., activation of hypoxia-inducible factors during normoxic conditions, can be triggered by e.g., mutations in the von Hippel-Lindau gene (VHL), hypoxia-inducible factor-2alpha (HIF2A, gene name EPAS1) or succinate dehydrogenase subunits A-D (SDHA-D, together referred to as SDHx). ('HIF2A', 'Gene', '2034', (195, 200)) ('hypoxia', 'Disease', 'MESH:D000860', (35, 42)) ('HIF2A', 'Gene', (195, 200)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (132, 149)) ('hypoxia', 'Disease', 'MESH:D000860', (162, 169)) ('VHL', 'Gene', (156, 159)) ('EPAS1', 'Gene', '2034', (212, 217)) ('hypoxia-inducible factor-2alpha', 'Gene', '2034', (162, 193)) ('hypoxia-inducible factor-2alpha', 'Gene', (162, 193)) ('VHL', 'Gene', '7428', (156, 159)) ('hypoxia', 'Disease', (6, 13)) ('SDHA', 'Gene', (260, 264)) ('mutations', 'Var', (115, 124)) ('von Hippel-Lindau', 'Disease', (132, 149)) ('EPAS1', 'Gene', (212, 217)) ('hypoxia', 'Disease', 'MESH:D000860', (6, 13)) ('SDHA', 'Gene', '6389', (260, 264)) ('hypoxia', 'Disease', (35, 42)) ('hypoxia', 'Disease', (162, 169)) 82928 33138083 However, while tumours with mutations in VHL are generally benign, those with SDHB mutations have an infamously high metastatic potential. ('mutations', 'Var', (83, 92)) ('metastatic potential', 'CPA', (117, 137)) ('tumours', 'Disease', 'MESH:D009369', (15, 22)) ('high', 'PosReg', (112, 116)) ('tumours', 'Disease', (15, 22)) ('SDHB', 'Gene', (78, 82)) ('VHL', 'Gene', (41, 44)) ('tumour', 'Phenotype', 'HP:0002664', (15, 21)) ('mutations', 'Var', (28, 37)) ('VHL', 'Gene', '7428', (41, 44)) ('tumours', 'Phenotype', 'HP:0002664', (15, 22)) 82929 33138083 On the other hand, dysregulated RTK signalling provides non-physiological mitogenic signals in the RTK/RAS pathway promoting excessive proliferation, and is caused by mutations in e.g., the RTK "rearranged-during-transfection" (RET), the rat sarcoma-associated (RAS) protein Harvey-RAS (HRAS), or the neurofibromatosis type 1 gene (NF1). ('sarcoma', 'Disease', 'MESH:D012509', (242, 249)) ('promoting', 'PosReg', (115, 124)) ('RTK', 'Gene', (32, 35)) ('caused by', 'Reg', (157, 166)) ('sarcoma', 'Disease', (242, 249)) ('RTK', 'Gene', (190, 193)) ('mutations', 'Var', (167, 176)) ('RTK', 'Gene', (99, 102)) ('Harvey-RAS', 'Gene', (275, 285)) ('Harvey-RAS', 'Gene', '293621', (275, 285)) ('rat', 'Species', '10116', (238, 241)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (301, 318)) ('sarcoma', 'Phenotype', 'HP:0100242', (242, 249)) ('RTK', 'Gene', '5979', (32, 35)) ('rat', 'Species', '10116', (142, 145)) ('RTK', 'Gene', '5979', (190, 193)) ('excessive proliferation', 'CPA', (125, 148)) ('RTK', 'Gene', '5979', (99, 102)) 82934 33138083 Investigating the human phaeochromocytoma cell line hPheo1 by exome sequencing analysis, we have found that it harbours a mutation in the previously described PPGL susceptibility gene KIF1B, and the NRAS Q61K mutation, which is a known oncogenic event in malignant melanoma. ('PPGL', 'Gene', (159, 163)) ('PPGL', 'Chemical', '-', (159, 163)) ('malignant melanoma', 'Phenotype', 'HP:0002861', (255, 273)) ('mutation', 'Var', (122, 130)) ('human', 'Species', '9606', (18, 23)) ('Q61K', 'Mutation', 'rs1219132549', (204, 208)) ('KIF1B', 'Gene', (184, 189)) ('malignant melanoma', 'Disease', 'MESH:D008545', (255, 273)) ('malignant melanoma', 'Disease', (255, 273)) ('KIF1B', 'Gene', '23095', (184, 189)) ('NRAS Q61K', 'Var', (199, 208)) ('melanoma', 'Phenotype', 'HP:0002861', (265, 273)) 82937 33138083 Using whole exome sequencing, we first screened for variants with allele frequencies <0.1% in the population, affecting the following genes that have previously been found mutated or suggested to be susceptibility genes in PPGL: ARNT, ATRX, BAP1, BRAF, CSDE1, EGLN1 (PHD2), EPAS1 (HIF2A), FGFR1, FH, GPR128, HRAS, KIF1B, MAX, MYCN, MYO5B, NF1, RET, SDHA, SDHAF2, SDHB, SDHC, SDHD, SLC25A11, TCF4, TMEM127, UBTF, VCL, and VHL. ('TCF4', 'Gene', (391, 395)) ('SDHD', 'Gene', '6392', (375, 379)) ('TMEM127', 'Gene', (397, 404)) ('ARNT', 'Gene', '405', (229, 233)) ('VHL', 'Gene', '7428', (421, 424)) ('variants', 'Var', (52, 60)) ('BAP1', 'Gene', (241, 245)) ('ARNT', 'Gene', (229, 233)) ('SDHA', 'Gene', (349, 353)) ('ATRX', 'Gene', (235, 239)) ('HIF2A', 'Gene', '2034', (281, 286)) ('SDHD', 'Gene', (375, 379)) ('ATRX', 'Gene', '546', (235, 239)) ('EPAS1', 'Gene', (274, 279)) ('MYCN', 'Gene', '4613', (326, 330)) ('TMEM127', 'Gene', '55654', (397, 404)) ('FH', 'Disease', 'MESH:D006938', (296, 298)) ('PHD2', 'Gene', (267, 271)) ('HIF2A', 'Gene', (281, 286)) ('GPR128', 'Gene', '84873', (300, 306)) ('CSDE1', 'Gene', (253, 258)) ('SDHA', 'Gene', '6389', (349, 353)) ('SDHB', 'Gene', (363, 367)) ('KIF1B', 'Gene', '23095', (314, 319)) ('PPGL', 'Chemical', '-', (223, 227)) ('SDHC', 'Gene', (369, 373)) ('PPGL', 'Gene', (223, 227)) ('VCL', 'Gene', (412, 415)) ('FGFR1', 'Gene', '2260', (289, 294)) ('UBTF', 'Gene', '7343', (406, 410)) ('SDHAF2', 'Gene', (355, 361)) ('PHD2', 'Gene', '54583', (267, 271)) ('GPR128', 'Gene', (300, 306)) ('SDHA', 'Gene', (355, 359)) ('SDHAF2', 'Gene', '54949', (355, 361)) ('CSDE1', 'Gene', '7812', (253, 258)) ('EGLN1', 'Gene', '54583', (260, 265)) ('MYO5B', 'Gene', '4645', (332, 337)) ('UBTF', 'Gene', (406, 410)) ('MYCN', 'Gene', (326, 330)) ('EPAS1', 'Gene', '2034', (274, 279)) ('MYO5B', 'Gene', (332, 337)) ('TCF4', 'Gene', '6925', (391, 395)) ('SDHA', 'Gene', '6389', (355, 359)) ('BAP1', 'Gene', '8314', (241, 245)) ('VHL', 'Gene', (421, 424)) ('BRAF', 'Gene', '673', (247, 251)) ('EGLN1', 'Gene', (260, 265)) ('BRAF', 'Gene', (247, 251)) ('KIF1B', 'Gene', (314, 319)) ('SLC25A11', 'Gene', (381, 389)) ('FGFR1', 'Gene', (289, 294)) ('VCL', 'Gene', '7414', (412, 415)) ('SDHC', 'Gene', '6391', (369, 373)) 82938 33138083 After this screening, we only identified a heterozygous KIF1B T827I (c.2480C > T, rs121908162) mutation, which has a minor allele frequency of 0.00058 reported in the Genome Aggregation Database (gnomAD). ('c.2480C > T', 'Mutation', 'rs121908162', (69, 80)) ('c.2480C > T', 'Var', (69, 80)) ('KIF1B', 'Gene', (56, 61)) ('KIF1B', 'Gene', '23095', (56, 61)) ('T827I', 'Mutation', 'rs121908162', (62, 67)) ('rs121908162', 'Mutation', 'rs121908162', (82, 93)) 82940 33138083 While KIF1B was found to be the second most frequently mutated gene in a multicentric Belgian PPGL patient cohort, the T827I mutation in exon 24 of the KIF1Bbeta-isoform has hitherto only previously been described in a paraganglioma and a neuroblastoma. ('patient', 'Species', '9606', (99, 106)) ('KIF1B', 'Gene', (6, 11)) ('PPGL', 'Chemical', '-', (94, 98)) ('KIF1B', 'Gene', '23095', (6, 11)) ('neuroblastoma', 'Disease', 'MESH:D009447', (239, 252)) ('paraganglioma', 'Phenotype', 'HP:0002668', (219, 232)) ('KIF1B', 'Gene', (152, 157)) ('neuroblastoma', 'Disease', (239, 252)) ('paraganglioma', 'Disease', (219, 232)) ('T827I', 'Mutation', 'rs121908162', (119, 124)) ('KIF1B', 'Gene', '23095', (152, 157)) ('T827I', 'Var', (119, 124)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (239, 252)) ('paraganglioma', 'Disease', 'MESH:D010235', (219, 232)) 82941 33138083 Assuming that KIF1B is a tumour suppressor, the T827I variant's pathogenicity for hPheo1 appears uncertain since Sanger sequencing of cDNA with an amplicon spanning exons 23-25 showed that mutant and wildtype alleles are both expressed (Supplementary Figure S1), and thereby that the wildtype allele is retained. ('T827I', 'Mutation', 'rs121908162', (48, 53)) ('KIF1B', 'Gene', '23095', (14, 19)) ('mutant', 'Var', (189, 195)) ('KIF1B', 'Gene', (14, 19)) ('tumour', 'Phenotype', 'HP:0002664', (25, 31)) ('tumour', 'Disease', 'MESH:D009369', (25, 31)) ('T827I', 'Var', (48, 53)) ('tumour', 'Disease', (25, 31)) 82944 33138083 Considering that HRAS mutations have been detected in PPGL of the RTK/RAS-driven subtype, and that chromaffin cells share embryological origin with melanocytes, which are also susceptible to transformation by NRAS Q61 mutations, it seems plausible that this NRAS gain-of-function mutation might be a previously unknown causative or predisposing factor behind the neoplastic transformation of chromaffin cells. ('gain-of-function', 'PosReg', (263, 279)) ('NRAS Q61', 'Gene', (209, 217)) ('PPGL', 'Chemical', '-', (54, 58)) ('mutations', 'Var', (218, 227)) ('chromaffin', 'Chemical', '-', (392, 402)) ('RTK', 'Gene', '5979', (66, 69)) ('neoplastic transformation of chromaffin cells', 'Phenotype', 'HP:0002666', (363, 408)) ('mutations', 'Var', (22, 31)) ('NRAS', 'Gene', (258, 262)) ('chromaffin', 'Chemical', '-', (99, 109)) ('RTK', 'Gene', (66, 69)) 82955 33138083 As an initial approach, we assessed how siNRAS-treatment of hPheo1 affected their trypsin sensitivity, i.e., how sensitive a cell type is to detachment by trypsinisation in vitro, which is a trait that has been shown to distinguish differentially adherent cell types in various contexts, e.g., in cultures of breast cancer, colorectal cancer, and melanoma cells. ('melanoma', 'Disease', 'MESH:D008545', (347, 355)) ('melanoma', 'Phenotype', 'HP:0002861', (347, 355)) ('cancer', 'Phenotype', 'HP:0002664', (335, 341)) ('siNRAS-treatment', 'Var', (40, 56)) ('melanoma', 'Disease', (347, 355)) ('affected', 'Reg', (67, 75)) ('colorectal cancer', 'Disease', 'MESH:D015179', (324, 341)) ('detachment', 'Disease', (141, 151)) ('detachment', 'Disease', 'MESH:D012163', (141, 151)) ('cancer', 'Phenotype', 'HP:0002664', (316, 322)) ('breast cancer', 'Disease', 'MESH:D001943', (309, 322)) ('trypsin sensitivity', 'MPA', (82, 101)) ('hPheo1', 'Gene', (60, 66)) ('breast cancer', 'Phenotype', 'HP:0003002', (309, 322)) ('breast cancer', 'Disease', (309, 322)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (324, 341)) ('colorectal cancer', 'Disease', (324, 341)) ('siNRAS', 'Chemical', '-', (40, 46)) 82966 33138083 However, this finding could not be validated by RT-qPCR, and the cell proliferation rate was not significantly affected by siNRAS#1 (Supplementary Figure S3A,B). ('siNRAS', 'Chemical', '-', (123, 129)) ('rat', 'Species', '10116', (77, 80)) ('rat', 'Species', '10116', (84, 87)) ('cell proliferation', 'CPA', (65, 83)) ('siNRAS', 'Var', (123, 129)) 82967 33138083 To explore if any NRAS-related transcriptomic patterns observed in hPheo1 cells are present in PPGL tumour samples, we analysed cDNA hybridization microarray data on 26 samples with known driver mutations from a Scandinavian patient cohort (including 5 EPAS1-mutated PPGL belonging to a pseudohypoxic subtype; and 11 NF1-mutated, 5 HRAS-mutated, 3 RET-mutated, and 2 FGFR-mutated PPGLs belonging to RTK-driven subtypes) and RNA-sequencing data on 186 samples from The Cancer Genome Atlas (TCGA) project. ('EPAS1', 'Gene', (253, 258)) ('RTK', 'Gene', (399, 402)) ('PPGL', 'Chemical', '-', (267, 271)) ('PPGLs', 'Chemical', '-', (380, 385)) ('tumour', 'Phenotype', 'HP:0002664', (100, 106)) ('PPGL', 'Chemical', '-', (95, 99)) ('PPGL', 'Chemical', '-', (380, 384)) ('mutations', 'Var', (195, 204)) ('tumour', 'Disease', 'MESH:D009369', (100, 106)) ('Cancer', 'Disease', (468, 474)) ('RTK', 'Gene', '5979', (399, 402)) ('Cancer', 'Phenotype', 'HP:0002664', (468, 474)) ('tumour', 'Disease', (100, 106)) ('EPAS1', 'Gene', '2034', (253, 258)) ('patient', 'Species', '9606', (225, 232)) ('Cancer', 'Disease', 'MESH:D009369', (468, 474)) 82970 33138083 While RTK/RAS-driven PPGLs with mutations in RET, HRAS, and NF1 are distinguished by overexpression of the adrenergic differentiation signature, pseudohypoxic PPGLs with mutations in VHL, SDHx, and EPAS1 are distinguished by low expression of the differentiation signature and concomitant overexpression of the angiogenic signature. ('PPGLs', 'Chemical', '-', (159, 164)) ('EPAS1', 'Gene', '2034', (198, 203)) ('VHL', 'Gene', '7428', (183, 186)) ('EPAS1', 'Gene', (198, 203)) ('mutations', 'Var', (170, 179)) ('SDHx', 'Gene', (188, 192)) ('RTK', 'Gene', '5979', (6, 9)) ('NF1', 'Gene', (60, 63)) ('RET', 'Gene', (45, 48)) ('PPGLs', 'Chemical', '-', (21, 26)) ('mutations', 'Var', (32, 41)) ('HRAS', 'Gene', (50, 54)) ('RTK', 'Gene', (6, 9)) ('VHL', 'Gene', (183, 186)) ('expression', 'MPA', (229, 239)) 82980 33138083 In this study, we report the identification of the missense variant KIF1B T827I and the oncogenic mutation NRAS Q61K in the hPheo1 cell line. ('KIF1B', 'Gene', '23095', (68, 73)) ('KIF1B', 'Gene', (68, 73)) ('T827I', 'Var', (74, 79)) ('T827I', 'Mutation', 'rs121908162', (74, 79)) ('Q61K', 'Mutation', 'rs1219132549', (112, 116)) ('NRAS Q61K', 'Var', (107, 116)) 82981 33138083 While the KIF1B mutation is most likely benign, the NRAS mutation is a known oncogenic variant in other neoplastic diseases, and a novel finding for PPGL tumours, for which reason it became the focus of the present study. ('NRAS', 'Gene', (52, 56)) ('mutation', 'Var', (57, 65)) ('neoplastic disease', 'Phenotype', 'HP:0002664', (104, 122)) ('mutation', 'Var', (16, 24)) ('PPGL tumours', 'Disease', 'MESH:D009369', (149, 161)) ('PPGL tumours', 'Disease', (149, 161)) ('KIF1B', 'Gene', (10, 15)) ('tumours', 'Phenotype', 'HP:0002664', (154, 161)) ('neoplastic diseases', 'Disease', 'MESH:D009386', (104, 123)) ('tumour', 'Phenotype', 'HP:0002664', (154, 160)) ('KIF1B', 'Gene', '23095', (10, 15)) ('neoplastic diseases', 'Disease', (104, 123)) 82984 33138083 Gain-of-function mutations in one of the three mutational hotspots (codons 12, 13 or 61) of RAS proteins are recurrently detected in multiple cancers, in which they provide dysregulated intracellular signals by impairing the self-deactivating GTPase activity common to all small monomeric G-proteins. ('multiple cancers', 'Disease', 'MESH:D009369', (133, 149)) ('cancer', 'Phenotype', 'HP:0002664', (142, 148)) ('Gain-of-function', 'PosReg', (0, 16)) ('multiple cancers', 'Disease', (133, 149)) ('self-deactivating', 'MPA', (225, 242)) ('impairing', 'NegReg', (211, 220)) ('small monomeric G-proteins', 'Protein', (273, 299)) ('activity', 'MPA', (250, 258)) ('RAS proteins', 'Gene', (92, 104)) ('cancers', 'Phenotype', 'HP:0002664', (142, 149)) ('GTPase', 'Enzyme', (243, 249)) ('mutations', 'Var', (17, 26)) ('provide dysregulated intracellular signals', 'MPA', (165, 207)) 82986 33138083 The detected NRAS Q61K mutation in hPheo1 cells represents an intriguing finding since NRAS mutations have not been reported previously in PPGL, unlike HRAS mutations that are found in 5-10% of PPGL. ('Q61K', 'Mutation', 'rs1219132549', (18, 22)) ('PPGL', 'Chemical', '-', (139, 143)) ('PPGL', 'Chemical', '-', (194, 198)) ('mutations', 'Var', (92, 101)) ('NRAS', 'Gene', (13, 17)) 82987 33138083 Melanocytes are known to be susceptible to neoplastic transformation by oncogenic NRAS mutants, since melanocytic neoplasias (naevi and malignant melanomas) frequently harbour NRAS Q61R or Q61K mutations. ('melanoma', 'Phenotype', 'HP:0002861', (146, 154)) ('melanomas', 'Phenotype', 'HP:0002861', (146, 155)) ('naevi', 'Phenotype', 'HP:0003764', (126, 131)) ('mutants', 'Var', (87, 94)) ('malignant melanomas', 'Disease', 'MESH:D008545', (136, 155)) ('NRAS', 'Gene', (82, 86)) ('melanocytic neoplasias', 'Disease', 'MESH:D009369', (102, 124)) ('Q61K', 'Var', (189, 193)) ('NRAS Q61R', 'Var', (176, 185)) ('Q61R', 'Mutation', 'rs11554290', (181, 185)) ('neoplasias', 'Phenotype', 'HP:0002664', (114, 124)) ('malignant melanomas', 'Phenotype', 'HP:0002861', (136, 155)) ('malignant melanoma', 'Phenotype', 'HP:0002861', (136, 154)) ('melanocytic neoplasias', 'Disease', (102, 124)) ('Q61K', 'Mutation', 'rs1219132549', (189, 193)) ('malignant melanomas', 'Disease', (136, 155)) 82988 33138083 In this context, it is also interesting to note that melanocytic naevi with mutations in the NRAS signalling pathway (NRAS or BRAF mutations) require additional driver mutations to avoid senescence, e.g., in the CDKN2A locus. ('melanocytic naevi', 'Disease', (53, 70)) ('CDKN2A', 'Gene', '1029', (212, 218)) ('mutations', 'Var', (76, 85)) ('melanocytic naevi', 'Phenotype', 'HP:0000995', (53, 70)) ('naevi', 'Phenotype', 'HP:0003764', (65, 70)) ('CDKN2A', 'Gene', (212, 218)) ('BRAF', 'Gene', (126, 130)) ('BRAF', 'Gene', '673', (126, 130)) ('senescence', 'MPA', (187, 197)) 82989 33138083 This prerequisite is fulfilled in the hPheo1 cell line harbouring a macrodeletion featuring the CDKN2A locus, and loss of the CDKN2A locus is a recurring phenomenon in PPGLs. ('CDKN2A', 'Gene', '1029', (96, 102)) ('CDKN2A', 'Gene', (126, 132)) ('loss', 'Var', (114, 118)) ('PPGLs', 'Chemical', '-', (168, 173)) ('CDKN2A', 'Gene', '1029', (126, 132)) ('CDKN2A', 'Gene', (96, 102)) 82991 33138083 Moreover, in mice, conditional expression of oncogenic NRAS in neural crest-derived tissues leads to development of hyperpigmentation and neurofibromas, which are typical manifestations of neurofibromatosis type 1, a disease that sometimes presents with phaeochromocytomas and is caused by loss-of-function mutations in the RAS deactivator NF1, indicating that NRAS mediates at least some of the effects of NF1 loss-of-function that cause neurofibromatosis type 1. ('loss-of-function', 'NegReg', (290, 306)) ('neurofibromatosis type 1, a disease', 'Disease', 'MESH:C537392', (189, 224)) ('mice', 'Species', '10090', (13, 17)) ('neurofibromas', 'Phenotype', 'HP:0001067', (138, 151)) ('mutations', 'Var', (307, 316)) ('neurofibromatosis type 1', 'Disease', (439, 463)) ('NF1', 'Gene', (407, 410)) ('loss-of-function', 'NegReg', (411, 427)) ('phaeochromocytomas', 'Disease', (254, 272)) ('hyperpigmentation', 'Disease', 'MESH:D017495', (116, 133)) ('neurofibromas', 'Disease', (138, 151)) ('hyperpigmentation', 'Disease', (116, 133)) ('phaeochromocytomas', 'Disease', 'MESH:D010673', (254, 272)) ('NF1', 'Gene', (340, 343)) ('NRAS', 'Gene', (55, 59)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (439, 456)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (189, 206)) ('neurofibromas', 'Disease', 'MESH:D009455', (138, 151)) 82992 33138083 Somatic mutations in NF1 are also the most frequent genetic alteration found in sporadic PPGLs. ('PPGLs', 'Chemical', '-', (89, 94)) ('rat', 'Species', '10116', (64, 67)) ('NF1', 'Gene', (21, 24)) ('Somatic mutations', 'Var', (0, 17)) ('PPGLs', 'Disease', (89, 94)) 82995 33138083 In malignant melanoma, oncogenic NRAS has been shown to affect growth pattern, motility and ECM degradation; and in malignant PPGLs, altered cellular adhesion and ECM remodelling leading to increased tumour cell migration or invasion have been observed, attributed either directly due to malignancy-prone SDHB mutations or accumulation of somatic mutations. ('malignant melanoma', 'Phenotype', 'HP:0002861', (3, 21)) ('rat', 'Species', '10116', (215, 218)) ('malignant melanoma', 'Disease', 'MESH:D008545', (3, 21)) ('invasion', 'CPA', (225, 233)) ('motility', 'CPA', (79, 87)) ('ECM degradation', 'CPA', (92, 107)) ('mutations', 'Var', (310, 319)) ('growth pattern', 'CPA', (63, 77)) ('melanoma', 'Phenotype', 'HP:0002861', (13, 21)) ('tumour', 'Phenotype', 'HP:0002664', (200, 206)) ('tumour', 'Disease', 'MESH:D009369', (200, 206)) ('altered', 'Reg', (133, 140)) ('tumour', 'Disease', (200, 206)) ('PPGLs', 'Chemical', '-', (126, 131)) ('malignant melanoma', 'Disease', (3, 21)) ('malignancy', 'Disease', 'MESH:D009369', (288, 298)) ('affect', 'Reg', (56, 62)) ('cellular adhesion', 'CPA', (141, 158)) ('increased', 'PosReg', (190, 199)) ('SDHB', 'Gene', (305, 309)) ('malignancy', 'Disease', (288, 298)) 82997 33138083 A role for NF-kappaB in chromaffin neoplastic disease progression has been suggested in a study showing that inhibition of NF-kappaB with triptolide decreases the metastasising capability of phaeochromocytoma cells in a murine model of malignant PPGL dissemination in vivo. ('metastasising capability', 'CPA', (163, 187)) ('neoplastic disease', 'Phenotype', 'HP:0002664', (35, 53)) ('chromaffin', 'Chemical', '-', (24, 34)) ('neoplastic disease', 'Disease', 'MESH:D009386', (35, 53)) ('inhibition', 'Var', (109, 119)) ('chromaffin neoplastic disease', 'Phenotype', 'HP:0002666', (24, 53)) ('PPGL', 'Chemical', '-', (246, 250)) ('neoplastic disease', 'Disease', (35, 53)) ('decreases', 'NegReg', (149, 158)) ('NF-kappaB', 'Gene', (123, 132)) ('triptolide', 'Chemical', 'MESH:C001899', (138, 148)) ('murine', 'Species', '10090', (220, 226)) 83008 33138083 Second, we report that siNRAS- and control-treated hPheo1 cells adhered with similar efficiency to Matrigel-coated and uncoated plates (Figure 4A). ('siNRAS', 'Chemical', '-', (23, 29)) ('adhered', 'CPA', (64, 71)) ('siNRAS-', 'Var', (23, 30)) 83009 33138083 As an informative contrast to our findings, murine chromaffin cells transformed through knockout of the tumour suppressors SDHB or SLC25A11 showed improved spreading on Matrigel-coated and uncoated plates while exhibiting increased malignant potential as expected for pseudohypoxic PPGL with mitochondrial dysfunction. ('mitochondrial dysfunction', 'Disease', 'MESH:D028361', (292, 317)) ('knockout', 'Var', (88, 96)) ('PPGL', 'Chemical', '-', (282, 286)) ('mitochondrial dysfunction', 'Phenotype', 'HP:0003287', (292, 317)) ('mitochondrial dysfunction', 'Disease', (292, 317)) ('SLC25A11', 'Gene', (131, 139)) ('murine', 'Species', '10090', (44, 50)) ('chromaffin', 'Chemical', '-', (51, 61)) ('tumour', 'Phenotype', 'HP:0002664', (104, 110)) ('SDHB', 'Gene', (123, 127)) ('tumour', 'Disease', 'MESH:D009369', (104, 110)) ('increased', 'PosReg', (222, 231)) ('malignant potential', 'CPA', (232, 251)) ('spreading', 'CPA', (156, 165)) ('tumour', 'Disease', (104, 110)) ('improved', 'PosReg', (147, 155)) 83016 33138083 This implicates that the cellular adhesion properties of PPGLs could represent interactions between chromaffin and endothelial cells, and that transcriptomic consequences of RTK/RAS signalling downstream of NRAS in hPheo1 are present in PPGLs. ('PPGLs', 'Chemical', '-', (57, 62)) ('RTK', 'Gene', '5979', (174, 177)) ('implicates', 'Reg', (5, 15)) ('cellular adhesion', 'CPA', (25, 42)) ('interactions', 'Interaction', (79, 91)) ('hPheo1', 'Gene', (215, 221)) ('chromaffin', 'Chemical', '-', (100, 110)) ('PPGLs', 'Chemical', '-', (237, 242)) ('RTK', 'Gene', (174, 177)) ('NRAS', 'Var', (207, 211)) 83021 33138083 In summary, we report that the hPheo1 cell line expresses the oncogenic NRAS Q61K variant, and that NRAS activity downregulates a matrisomal gene signature and decreases cell-ECM adhesion. ('NRAS', 'Gene', (72, 76)) ('downregulates', 'NegReg', (114, 127)) ('matrisomal gene', 'Gene', (130, 145)) ('Q61K', 'Var', (77, 81)) ('Q61K', 'Mutation', 'rs1219132549', (77, 81)) ('decreases', 'NegReg', (160, 169)) ('cell-ECM adhesion', 'CPA', (170, 187)) 83058 33138083 Supplementary Materials can be found at , Figure S1: Confirmation of KIF1B T827I mutation in hPheo1 cell line through Sanger sequencing; Figure S2: Confirmation of NRAS Q61K mutation in hPheo1 cell line through Sanger sequencing; Figure S3: CCND1 gene expression and hPheo1 proliferation; Table S1: List of transcript cluster IDs significantly upregulated in hPheo1 by siNRAS treatment; Table S2: List of transcript cluster IDs significantly downregulated in hPheo1 by siNRAS treatment; Table S3: Genes up- and downregulated by siNRAS-treatment of hPheo1; Table S4: Differentially expressed genes in RTK1 and RTK3 PPGL subclusters; Table S5: Primer pairs; Table S6: PCR protocols. ('downregulated', 'NegReg', (511, 524)) ('CCND1', 'Gene', '595', (241, 246)) ('Q61K', 'Mutation', 'rs1219132549', (169, 173)) ('RTK', 'Gene', '5979', (600, 603)) ('KIF1B', 'Gene', '23095', (69, 74)) ('PPGL', 'Chemical', '-', (614, 618)) ('CCND1', 'Gene', (241, 246)) ('up-', 'PosReg', (503, 506)) ('upregulated', 'PosReg', (344, 355)) ('siNRAS', 'Chemical', '-', (469, 475)) ('RTK', 'Gene', (609, 612)) ('KIF1B', 'Gene', (69, 74)) ('mutation', 'Var', (81, 89)) ('T827I', 'Mutation', 'rs121908162', (75, 80)) ('RTK', 'Gene', '5979', (609, 612)) ('siNRAS', 'Chemical', '-', (369, 375)) ('RTK', 'Gene', (600, 603)) ('rat', 'Species', '10116', (281, 284)) ('siNRAS', 'Chemical', '-', (528, 534)) 83108 29534684 A novel splicing site IRP1 somatic mutation in a patient with pheochromocytoma and JAK2V617F positive polycythemia vera: a case report The role of the hypoxia signaling pathway in the pathogenesis of pheochromocytoma/paraganglioma (PPGL)-polycythemia syndrome has been elucidated. ('pheochromocytoma', 'Disease', (200, 216)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (62, 78)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('polycythemia vera', 'Disease', (102, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (200, 216)) ('paraganglioma', 'Phenotype', 'HP:0002668', (217, 230)) ('pheochromocytoma/paraganglioma (PPGL)-polycythemia syndrome', 'Disease', 'MESH:D010673', (200, 259)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (200, 216)) ('polycythemia vera', 'Disease', 'MESH:D011087', (102, 119)) ('patient', 'Species', '9606', (49, 56)) ('hypoxia', 'Disease', 'MESH:D000860', (151, 158)) ('polycythemia', 'Phenotype', 'HP:0001901', (102, 114)) ('mutation', 'Var', (35, 43)) ('hypoxia', 'Disease', (151, 158)) ('IRP1', 'Gene', (22, 26)) ('polycythemia', 'Phenotype', 'HP:0001901', (238, 250)) ('pheochromocytoma', 'Disease', (62, 78)) ('IRP1', 'Gene', '48', (22, 26)) 83109 29534684 Novel somatic mutations in hypoxia-inducible factor type 2A (HIF2A) and germline mutations in prolyl hydroxylase type 1 and type 2 (PHD1 and PHD2) have been identified to cause upregulation of the hypoxia signaling pathway and its target genes including erythropoietin (EPO) and its receptor (EPOR). ('HIF2A', 'Gene', (61, 66)) ('upregulation', 'PosReg', (177, 189)) ('hypoxia', 'Disease', 'MESH:D000860', (27, 34)) ('mutations', 'Var', (81, 90)) ('hypoxia-inducible factor type 2A', 'Gene', (27, 59)) ('PHD2', 'Gene', (141, 145)) ('mutations', 'Var', (14, 23)) ('PHD2', 'Gene', '54583', (141, 145)) ('hypoxia', 'Disease', (197, 204)) ('erythropoietin', 'Gene', (254, 268)) ('EPO', 'Gene', (270, 273)) ('hypoxia-inducible factor type 2A', 'Gene', '2034', (27, 59)) ('erythropoietin', 'Gene', '2056', (254, 268)) ('hypoxia', 'Disease', 'MESH:D000860', (197, 204)) ('EPOR', 'Gene', (293, 297)) ('PHD1', 'Gene', (132, 136)) ('EPOR', 'Gene', '2057', (293, 297)) ('hypoxia', 'Disease', (27, 34)) ('PHD1', 'Gene', '112398', (132, 136)) 83114 29534684 Tumor tissue from the patient was further tested for mutations in genes related to upregulation of the hypoxia signaling pathway including iron regulatory protein 1 (IRP1), which is a known regulator of HIF-2alpha mRNA translation. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('upregulation', 'PosReg', (83, 95)) ('HIF-2alpha', 'Gene', '2034', (203, 213)) ('iron regulatory protein 1', 'Gene', (139, 164)) ('patient', 'Species', '9606', (22, 29)) ('IRP1', 'Gene', (166, 170)) ('hypoxia', 'Disease', 'MESH:D000860', (103, 110)) ('mutations', 'Var', (53, 62)) ('tested', 'Reg', (42, 48)) ('hypoxia', 'Disease', (103, 110)) ('iron regulatory protein 1', 'Gene', '48', (139, 164)) ('HIF-2alpha', 'Gene', (203, 213)) 83116 29534684 Fluorescence in situ hybridization analysis demonstrated heterozygous IRP1 deletions in tumor cells. ('deletions', 'Var', (75, 84)) ('tumor', 'Disease', 'MESH:D009369', (88, 93)) ('IRP1', 'Gene', (70, 74)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('tumor', 'Disease', (88, 93)) 83117 29534684 Immunohistochemistry results confirmed the truncated IRP1 and overexpressed HIF-2alpha, EPO and EPOR in tumor cells. ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('overexpressed', 'PosReg', (62, 75)) ('HIF-2alpha', 'Gene', '2034', (76, 86)) ('tumor', 'Disease', (104, 109)) ('IRP1', 'Protein', (53, 57)) ('truncated', 'Var', (43, 52)) ('EPOR', 'Gene', '2057', (96, 100)) ('EPOR', 'Gene', (96, 100)) ('tumor', 'Disease', 'MESH:D009369', (104, 109)) ('HIF-2alpha', 'Gene', (76, 86)) 83118 29534684 This is the first report which provides direct molecular genetic evidence of association between a somatic IRP1 loss-of-function mutation and PHEO and secondary polycythemia. ('loss-of-function', 'NegReg', (112, 128)) ('mutation', 'Var', (129, 137)) ('IRP1', 'Gene', (107, 111)) ('polycythemia', 'Phenotype', 'HP:0001901', (161, 173)) ('secondary polycythemia', 'Disease', 'MESH:D011086', (151, 173)) ('secondary polycythemia', 'Disease', (151, 173)) 83119 29534684 In patients diagnosed with PHEO/PGL and polycythemia with negative genetic testing for mutations in HIF2A, PHD1/2, and VHL, IRP1 should be considered as a candidate gene. ('VHL', 'Disease', 'MESH:D006623', (119, 122)) ('polycythemia', 'Disease', (40, 52)) ('VHL', 'Disease', (119, 122)) ('PGL', 'Disease', (32, 35)) ('polycythemia', 'Phenotype', 'HP:0001901', (40, 52)) ('polycythemia', 'Disease', 'MESH:D011086', (40, 52)) ('PGL', 'Disease', 'MESH:D010235', (32, 35)) ('patients', 'Species', '9606', (3, 11)) ('HIF2A', 'Gene', (100, 105)) ('mutations', 'Var', (87, 96)) ('PHD1/2', 'Gene', (107, 113)) 83121 29534684 Primary polycythemia occurs due to somatic and germline mutations in erythroid, granulocytic and megakaryocytic progenitors with hypersensitive erythropoietin receptors (EPOR), leading to their clonal myeloproliferation with plasma erythropoietin (EPO) level below or in the normal range. ('polycythemia', 'Phenotype', 'HP:0001901', (8, 20)) ('mutations', 'Var', (56, 65)) ('erythropoietin', 'Gene', (232, 246)) ('EPOR', 'Gene', (170, 174)) ('EPOR', 'Gene', '2057', (170, 174)) ('Primary polycythemia', 'Disease', 'MESH:D011087', (0, 20)) ('erythropoietin receptors', 'Gene', (144, 168)) ('Primary polycythemia', 'Disease', (0, 20)) ('erythropoietin', 'Gene', (144, 158)) ('erythropoietin receptors', 'Gene', '2057', (144, 168)) ('hypersensitive', 'Disease', 'MESH:D004342', (129, 143)) ('erythropoietin', 'Gene', '2056', (232, 246)) ('hypersensitive', 'Disease', (129, 143)) ('erythropoietin', 'Gene', '2056', (144, 158)) ('clonal myeloproliferation', 'Disease', (194, 219)) 83125 29534684 In disorders due to genetic mutations of the hypoxia signaling pathway, there is both, aberrant production of EPO, a downstream target gene and increased sensitivity of erythroid progenitors to this hormone. ('EPO', 'Protein', (110, 113)) ('production', 'MPA', (96, 106)) ('aberrant', 'Var', (87, 95)) ('genetic mutations', 'Var', (20, 37)) ('hypoxia', 'Disease', (45, 52)) ('hypoxia', 'Disease', 'MESH:D000860', (45, 52)) ('increased', 'PosReg', (144, 153)) 83126 29534684 Until recently, Chuvash polycythemia, caused by germline R200W homozygous mutations in the von Hippel-Lindau (VHL) gene, was the only known form of congenital polycythemia to occur due to upregulation of the hypoxia signaling pathway. ('R200W', 'Var', (57, 62)) ('congenital polycythemia', 'Disease', (148, 171)) ('hypoxia', 'Disease', (208, 215)) ('hypoxia', 'Disease', 'MESH:D000860', (208, 215)) ('Chuvash polycythemia', 'Disease', (16, 36)) ('R200W', 'Mutation', 'rs28940298', (57, 62)) ('VHL', 'Disease', (110, 113)) ('Chuvash polycythemia', 'Disease', 'MESH:C563918', (16, 36)) ('VHL', 'Disease', 'MESH:D006623', (110, 113)) ('upregulation', 'PosReg', (188, 200)) ('polycythemia', 'Phenotype', 'HP:0001901', (159, 171)) ('congenital polycythemia', 'Disease', 'MESH:D011086', (148, 171)) ('polycythemia', 'Phenotype', 'HP:0001901', (24, 36)) 83127 29534684 Mutations in prolyl hydroxylase domain (PHD) 1 and 2 and hypoxia-inducible factor type 2A (HIF2A) genes cause a syndromic presentation with polycythemia and erythropoietin secreting neuroendocrine malignancies. ('hypoxia-inducible factor type 2A', 'Gene', '2034', (57, 89)) ('neuroendocrine malignancies', 'Disease', 'MESH:D018358', (182, 209)) ('polycythemia', 'Disease', (140, 152)) ('neuroendocrine malignancies', 'Phenotype', 'HP:0100634', (182, 209)) ('HIF2A', 'Gene', (91, 96)) ('erythropoietin', 'Gene', (157, 171)) ('hypoxia-inducible factor type 2A', 'Gene', (57, 89)) ('neuroendocrine malignancies', 'Disease', (182, 209)) ('syndromic', 'Disease', (112, 121)) ('Mutations', 'Var', (0, 9)) ('cause', 'Reg', (104, 109)) ('prolyl hydroxylase domain (PHD) 1 and 2', 'Gene', '112398;54583', (13, 52)) ('polycythemia', 'Disease', 'MESH:D011086', (140, 152)) ('polycythemia', 'Phenotype', 'HP:0001901', (140, 152)) ('erythropoietin', 'Gene', '2056', (157, 171)) 83128 29534684 While previously, germline PHD2 and HIF2A mutations were reported in rare cases of familial erythrocytosis, recent evidence elucidated the significance of the hypoxia signaling pathway in development of pheochromocytoma/paraganglioma (PPGL). ('pheochromocytoma', 'Phenotype', 'HP:0002666', (203, 219)) ('pheochromocytoma/paraganglioma', 'Disease', (203, 233)) ('paraganglioma', 'Phenotype', 'HP:0002668', (220, 233)) ('PGL', 'Disease', (236, 239)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (92, 106)) ('familial erythrocytosis', 'Disease', 'MESH:C536842', (83, 106)) ('HIF2A', 'Gene', (36, 41)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (203, 233)) ('PHD2', 'Gene', '54583', (27, 31)) ('PGL', 'Disease', 'MESH:D010235', (236, 239)) ('PHD2', 'Gene', (27, 31)) ('hypoxia', 'Disease', (159, 166)) ('hypoxia', 'Disease', 'MESH:D000860', (159, 166)) ('familial erythrocytosis', 'Disease', (83, 106)) ('mutations', 'Var', (42, 51)) 83130 29534684 Patients with somatic HIF2A mutations, also referred to as Pacak-Zhuang syndrome, are typically females, diagnosed with polycythemia within the first decade of life, recurrent PPGLs, somatostatinomas and ocular abnormalities. ('ocular abnormalities', 'Phenotype', 'HP:0000478', (204, 224)) ('polycythemia', 'Disease', (120, 132)) ('HIF2A', 'Gene', (22, 27)) ('PPGLs', 'Disease', (176, 181)) ('polycythemia', 'Phenotype', 'HP:0001901', (120, 132)) ('Patients', 'Species', '9606', (0, 8)) ('PPGLs', 'Chemical', '-', (176, 181)) ('somatostatinomas and ocular abnormalities', 'Disease', 'MESH:D013005', (183, 224)) ('polycythemia', 'Disease', 'MESH:D011086', (120, 132)) ('mutations', 'Var', (28, 37)) 83131 29534684 Patients with germline PHD1 and PHD2 mutations can develop polycythemia and recurrent PPGLs. ('PHD2', 'Gene', '54583', (32, 36)) ('develop', 'PosReg', (51, 58)) ('PHD1', 'Gene', '112398', (23, 27)) ('PPGLs', 'Disease', (86, 91)) ('PHD2', 'Gene', (32, 36)) ('PHD1', 'Gene', (23, 27)) ('polycythemia', 'Disease', (59, 71)) ('mutations', 'Var', (37, 46)) ('Patients', 'Species', '9606', (0, 8)) ('polycythemia', 'Phenotype', 'HP:0001901', (59, 71)) ('polycythemia', 'Disease', 'MESH:D011086', (59, 71)) ('PPGLs', 'Chemical', '-', (86, 91)) 83133 29534684 Given a similar clinical phenotype, we screened for mutations in other unexplored regulators of HIF-2alpha, including iron regulatory proteins (IRPs), in one of our patients. ('mutations', 'Var', (52, 61)) ('HIF-2alpha', 'Gene', (96, 106)) ('HIF-2alpha', 'Gene', '2034', (96, 106)) ('screened', 'Reg', (39, 47)) ('patients', 'Species', '9606', (165, 173)) ('iron', 'Chemical', 'MESH:D007501', (118, 122)) 83139 29534684 In this study, we found for the first time an association between a somatic splicing site IRP1 mutation and PPGL-polycythemia syndrome. ('IRP1', 'Gene', (90, 94)) ('PPGL-polycythemia syndrome', 'Disease', 'MESH:D011086', (108, 134)) ('PPGL-polycythemia syndrome', 'Disease', (108, 134)) ('polycythemia', 'Phenotype', 'HP:0001901', (113, 125)) ('mutation', 'Var', (95, 103)) 83153 29534684 In tumor tissue, we identified an indel mutation of IRP1 (c.267-1_267delGGinsTA) at the exon 3 splicing site, which is not present in the patient's blood DNA (Fig. ('c.267-1_267delGGinsTA', 'Var', (58, 79)) ('tumor', 'Disease', (3, 8)) ('IRP1', 'Gene', (52, 56)) ('c.267-1_267delGGinsTA', 'Mutation', 'c.267-1_267delinsGG,TA', (58, 79)) ('patient', 'Species', '9606', (138, 145)) ('tumor', 'Disease', 'MESH:D009369', (3, 8)) ('tumor', 'Phenotype', 'HP:0002664', (3, 8)) 83156 29534684 The splicing site prediction algorithm (Human Splicing Finder) showed that the IRP1 mutation either cause splicing site breakage or form a new splicing site, suggesting loss-of-function of the IRP1 protein (Fig. ('IRP1', 'Gene', (79, 83)) ('Human', 'Species', '9606', (40, 45)) ('breakage', 'NegReg', (120, 128)) ('splicing site', 'MPA', (106, 119)) ('loss-of-function', 'NegReg', (169, 185)) ('cause', 'Reg', (100, 105)) ('mutation', 'Var', (84, 92)) 83157 29534684 Furthermore, the frameshift mutation led to a premature stop codon and truncated protein (p.V95*), causing a loss of 794 amino acids (Fig. ('794 amino acids', 'MPA', (117, 132)) ('frameshift mutation', 'Var', (17, 36)) ('loss', 'NegReg', (109, 113)) ('p.V95*', 'Mutation', 'p.V95*', (90, 96)) 83158 29534684 Immunohistochemistry revealed that an anti-C terminal antibody of IRP1 could not detect the protein in patient tumor, while anti-N terminal antibody could bind to the protein, indicating that the protein was truncated as a consequence of the IRP1 mutation, consistent with the sequencing results of minigene. ('tumor', 'Disease', 'MESH:D009369', (111, 116)) ('bind', 'Interaction', (155, 159)) ('tumor', 'Phenotype', 'HP:0002664', (111, 116)) ('mutation', 'Var', (247, 255)) ('truncated', 'NegReg', (208, 217)) ('tumor', 'Disease', (111, 116)) ('IRP1', 'Gene', (242, 246)) ('patient', 'Species', '9606', (103, 110)) 83161 29534684 The present study reports the first evidence of a novel somatic IRP1 mutation associated with the pathogenesis of PPGL-polycythemia syndrome, further extending its genetic spectrum. ('associated', 'Reg', (78, 88)) ('PPGL-polycythemia syndrome', 'Disease', 'MESH:D011086', (114, 140)) ('PPGL-polycythemia syndrome', 'Disease', (114, 140)) ('mutation', 'Var', (69, 77)) ('polycythemia', 'Phenotype', 'HP:0001901', (119, 131)) ('IRP1', 'Gene', (64, 68)) 83162 29534684 This splicing site mutation causes a frame shift of exon 3, resulting in a heterozygous IRP1 deletion and substantially decreased IRP1 protein levels in the tumor cells. ('tumor', 'Disease', (157, 162)) ('decreased', 'NegReg', (120, 129)) ('mutation', 'Var', (19, 27)) ('tumor', 'Disease', 'MESH:D009369', (157, 162)) ('IRP1 protein levels', 'MPA', (130, 149)) ('IRP1', 'Gene', (88, 92)) ('tumor', 'Phenotype', 'HP:0002664', (157, 162)) ('deletion', 'Var', (93, 101)) 83177 29534684 The previously described phenotype of IRP1 knockout mice is reminiscent of polycythemia associated with VHL, PHD1/2 and HIF2A mutations. ('polycythemia', 'Disease', (75, 87)) ('HIF2A', 'Gene', (120, 125)) ('VHL', 'Disease', (104, 107)) ('PHD1/2', 'Gene', (109, 115)) ('polycythemia', 'Disease', 'MESH:D011086', (75, 87)) ('mice', 'Species', '10090', (52, 56)) ('VHL', 'Disease', 'MESH:D006623', (104, 107)) ('polycythemia', 'Phenotype', 'HP:0001901', (75, 87)) ('mutations', 'Var', (126, 135)) ('IRP1', 'Gene', (38, 42)) 83178 29534684 These mutations prevent proteasomal degradation of HIF-2alpha following iron and oxygen-dependent hydroxylation by PHDs and recognition by the pVHL E3 ubiquitin ligase. ('oxygen', 'Chemical', 'MESH:D010100', (81, 87)) ('proteasomal degradation', 'MPA', (24, 47)) ('VHL', 'Disease', (144, 147)) ('iron', 'Chemical', 'MESH:D007501', (72, 76)) ('VHL', 'Disease', 'MESH:D006623', (144, 147)) ('HIF-2alpha', 'Gene', '2034', (51, 61)) ('PHD', 'Disease', 'MESH:D011547', (115, 118)) ('prevent', 'NegReg', (16, 23)) ('PHD', 'Disease', (115, 118)) ('mutations', 'Var', (6, 15)) ('HIF-2alpha', 'Gene', (51, 61)) 83180 29534684 While IRP1-mediated secondary polycythemia has never earlier been reported in humans, a single nucleotide polymorphism in IRP1 was found to be associated with cutaneous malignant melanoma. ('cutaneous malignant melanoma', 'Phenotype', 'HP:0012056', (159, 187)) ('cutaneous malignant melanoma', 'Disease', (159, 187)) ('IRP1', 'Gene', (122, 126)) ('associated with', 'Reg', (143, 158)) ('humans', 'Species', '9606', (78, 84)) ('cutaneous malignant melanoma', 'Disease', 'MESH:C562393', (159, 187)) ('polycythemia', 'Phenotype', 'HP:0001901', (30, 42)) ('malignant melanoma', 'Phenotype', 'HP:0002861', (169, 187)) ('secondary polycythemia', 'Disease', 'MESH:D011086', (20, 42)) ('secondary polycythemia', 'Disease', (20, 42)) ('single nucleotide polymorphism', 'Var', (88, 118)) 83183 29534684 This direct link is attributed to the crucial role of IRPs in iron homeostasis and how its disruption can cause chronic oxidative stress, resulting in malignant transformation and increased proliferation of neoplastic cells. ('malignant transformation', 'CPA', (151, 175)) ('disruption', 'Var', (91, 101)) ('cause', 'Reg', (106, 111)) ('iron', 'Chemical', 'MESH:D007501', (62, 66)) ('increased', 'PosReg', (180, 189)) ('resulting in', 'Reg', (138, 150)) ('oxidative stress', 'Phenotype', 'HP:0025464', (120, 136)) ('proliferation', 'CPA', (190, 203)) 83184 29534684 Our study provides the first evidence of a novel somatic IRP mutation in the pathogenesis of both cancer development and secondary polycythemia. ('cancer', 'Phenotype', 'HP:0002664', (98, 104)) ('polycythemia', 'Phenotype', 'HP:0001901', (131, 143)) ('mutation', 'Var', (61, 69)) ('cancer', 'Disease', 'MESH:D009369', (98, 104)) ('cancer', 'Disease', (98, 104)) ('secondary polycythemia', 'Disease', 'MESH:D011086', (121, 143)) ('IRP', 'Gene', (57, 60)) ('secondary polycythemia', 'Disease', (121, 143)) 83190 29534684 In conclusion, this novel loss-of-function mutation at the IRP1 splicing site is the latest genetic abnormality to contribute to the pathogenetic factors associated with PPGL-polycythemia syndrome. ('IRP1', 'Gene', (59, 63)) ('mutation', 'Var', (43, 51)) ('genetic abnormality', 'Disease', (92, 111)) ('genetic abnormality', 'Disease', 'MESH:D030342', (92, 111)) ('PPGL-polycythemia syndrome', 'Disease', (170, 196)) ('PPGL-polycythemia syndrome', 'Disease', 'MESH:D011086', (170, 196)) ('polycythemia', 'Phenotype', 'HP:0001901', (175, 187)) ('loss-of-function', 'NegReg', (26, 42)) 83312 25593821 MRI depicts the age of hemorrhage or hematoma which is isointense to slightly hypointense on T1 WI and hypointense on T2 WI in acute stage owing to the presence of intracellular deoxyhemoglobin and is hyperintense on both T1 and T2 WI by virtue of the presence of methemoglobin in the subacute stage. ('hematoma', 'Disease', 'MESH:D006406', (37, 45)) ('methemoglobin', 'Gene', (264, 277)) ('hemorrhage', 'Disease', 'MESH:D006470', (23, 33)) ('hematoma', 'Disease', (37, 45)) ('hypointense', 'Var', (103, 114)) ('hemorrhage', 'Disease', (23, 33)) ('methemoglobin', 'Gene', '3048', (264, 277)) 83319 25593821 On chemical shift MRI (CS-MRI), metastases do not produce signal drop on opposed phase images. ('metastases', 'Disease', 'MESH:D009362', (32, 42)) ('metastases', 'Disease', (32, 42)) ('CS', 'Chemical', '-', (23, 25)) ('chemical shift', 'Var', (3, 17)) 83321 25593821 Differentiation of metastases from lipid-poor adenomas can be difficult as lipid poor adenomas also have attenuation more than 10 HU and do not demonstrate signal drop on CS-MRI. ('adenomas', 'Disease', 'MESH:D000236', (86, 94)) ('adenomas', 'Disease', 'MESH:D000236', (46, 54)) ('adenomas', 'Disease', (86, 94)) ('adenomas', 'Disease', (46, 54)) ('CS', 'Chemical', '-', (171, 173)) ('lipid poor', 'Var', (75, 85)) ('lipid', 'Chemical', 'MESH:D008055', (35, 40)) ('metastases', 'Disease', (19, 29)) ('attenuation', 'MPA', (105, 116)) ('metastases', 'Disease', 'MESH:D009362', (19, 29)) ('lipid', 'Chemical', 'MESH:D008055', (75, 80)) 83322 25593821 However, contrast CT can help in such cases as lipid poor adenomas also have APW and RPW of more than 60% and 40% similar to lipid-rich adenomas. ('lipid', 'Chemical', 'MESH:D008055', (47, 52)) ('adenomas', 'Disease', 'MESH:D000236', (58, 66)) ('lipid poor', 'Var', (47, 57)) ('lipid', 'Chemical', 'MESH:D008055', (125, 130)) ('adenomas', 'Disease', 'MESH:D000236', (136, 144)) ('adenomas', 'Disease', (136, 144)) ('adenomas', 'Disease', (58, 66)) 83386 24959083 It has been reported that 123I-metaiodobenzylguanidine has strong affinity to chromaffin cell tissues when used as tracer imaging to effectively diagnose or locate paraganglioma. ('chromaffin', 'Chemical', '-', (78, 88)) ('123I-metaiodobenzylguanidine', 'Chemical', 'MESH:D019797', (26, 54)) ('paraganglioma', 'Phenotype', 'HP:0002668', (164, 177)) ('123I-metaiodobenzylguanidine', 'Var', (26, 54)) ('paraganglioma', 'Disease', (164, 177)) ('paraganglioma', 'Disease', 'MESH:D010235', (164, 177)) 83514 22584701 Hereditary HNPs are mostly caused by mutations of the SDHD gene, but SDHB and SDHC mutations are not uncommon in such patients. ('SDHB', 'Gene', (69, 73)) ('Hereditary HNPs', 'Disease', (0, 15)) ('SDHC', 'Gene', '6391', (78, 82)) ('SDHD', 'Gene', (54, 58)) ('SDHD', 'Gene', '6392', (54, 58)) ('patients', 'Species', '9606', (118, 126)) ('mutations', 'Var', (37, 46)) ('SDHB', 'Gene', '6390', (69, 73)) ('caused by', 'Reg', (27, 36)) ('SDHC', 'Gene', (78, 82)) ('HNPs', 'Chemical', '-', (11, 15)) 83515 22584701 Head and neck paragangliomas are rarely associated with mutations of VHL, RET, or NF1. ('mutations', 'Var', (56, 65)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (9, 28)) ('RET', 'Gene', (74, 77)) ('Head and neck paragangliomas', 'Phenotype', 'HP:0002864', (0, 28)) ('paraganglioma', 'Phenotype', 'HP:0002668', (14, 27)) ('NF1', 'Gene', (82, 85)) ('VHL', 'Gene', '7428', (69, 72)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (9, 28)) ('NF1', 'Gene', '4763', (82, 85)) ('RET', 'Gene', '5979', (74, 77)) ('paragangliomas', 'Phenotype', 'HP:0002668', (14, 28)) ('VHL', 'Gene', (69, 72)) ('neck paragangliomas', 'Disease', (9, 28)) ('associated', 'Reg', (40, 50)) 83517 22584701 Multiple head and neck paragangliomas are common in patients with SDHD mutations, while malignant head and neck paraganglioma is mostly seen in patients with SDHB mutations. ('SDHB', 'Gene', '6390', (158, 162)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (98, 125)) ('paragangliomas', 'Phenotype', 'HP:0002668', (23, 37)) ('SDHD', 'Gene', (66, 70)) ('paraganglioma', 'Phenotype', 'HP:0002668', (23, 36)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (9, 36)) ('mutations', 'Var', (71, 80)) ('neck paragangliomas', 'Disease', (18, 37)) ('SDHB', 'Gene', (158, 162)) ('common', 'Reg', (42, 48)) ('patients', 'Species', '9606', (52, 60)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (18, 36)) ('neck paraganglioma', 'Disease', (107, 125)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (107, 125)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (9, 37)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (18, 37)) ('patients', 'Species', '9606', (144, 152)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (18, 37)) ('SDHD', 'Gene', '6392', (66, 70)) ('paraganglioma', 'Phenotype', 'HP:0002668', (112, 125)) 83524 22584701 As well as pre-operative impairment of nerve function, surgery may result in deficits of cranial nerves VII, VIII, IX, X, XI, and XII. ('VIII', 'Gene', (109, 113)) ('deficits of cranial nerves VII', 'Disease', (77, 107)) ('cranial nerves VII', 'Phenotype', 'HP:0010628', (89, 107)) ('surgery', 'Var', (55, 62)) ('result in', 'Reg', (67, 76)) ('deficits of cranial nerves', 'Phenotype', 'HP:0001291', (77, 103)) ('deficits of cranial nerves VII', 'Disease', 'MESH:D005155', (77, 107)) ('cranial nerve', 'Phenotype', 'HP:0001291', (89, 102)) ('VIII', 'Gene', '1351', (109, 113)) 83560 22584701 Occasionally, JPs can cause deficits of other cranial nerves and create dysfunctional swallowing and huskiness of the voice. ('cause', 'Reg', (22, 27)) ('dysfunctional', 'MPA', (72, 85)) ('huskiness of the voice', 'Disease', (101, 123)) ('other cranial nerves', 'Phenotype', 'HP:0001291', (40, 60)) ('dysfunctional swallowing', 'Phenotype', 'HP:0002015', (72, 96)) ('create', 'Reg', (65, 71)) ('huskiness of the voice', 'Disease', 'MESH:D014832', (101, 123)) ('deficits of other cranial nerves', 'Disease', (28, 60)) ('deficits of other cranial nerves', 'Disease', 'MESH:D003390', (28, 60)) ('cranial nerve', 'Phenotype', 'HP:0001291', (46, 59)) ('JPs', 'Var', (14, 17)) 83593 22584701 Subsequently, mutations of the B and C subunit genes (SDHB and SDHC) were described in patients with paraganglioma syndromes that were later designated as PGL type 3 and type 4,. ('SDHB', 'Gene', '6390', (54, 58)) ('SDHB', 'Gene', (54, 58)) ('SDHC', 'Gene', (63, 67)) ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (101, 124)) ('SDHC', 'Gene', '6391', (63, 67)) ('described', 'Reg', (74, 83)) ('paraganglioma', 'Phenotype', 'HP:0002668', (101, 114)) ('paraganglioma syndromes', 'Disease', (101, 124)) ('patients', 'Species', '9606', (87, 95)) ('mutations', 'Var', (14, 23)) 83599 22584701 Meanwhile, it became evident that the spectrum of TMEM127 mutations extends to HNPs. ('mutations', 'Var', (58, 67)) ('extends', 'Reg', (68, 75)) ('HNPs', 'Disease', (79, 83)) ('TMEM127', 'Gene', (50, 57)) ('TMEM127', 'Gene', '55654', (50, 57)) ('HNPs', 'Chemical', '-', (79, 83)) 83600 22584701 Rarely, mutations of the well-known genes causing multiple endocrine neoplasia type 2 (MEN2), von Hippel-Lindau disease, and neurofibromatosis type 1 (VHL, RET, and NF1) may also predispose to HNPs. ('von Hippel-Lindau disease', 'Disease', (94, 119)) ('neurofibromatosis type 1', 'Gene', (125, 149)) ('VHL', 'Gene', '7428', (151, 154)) ('NF1', 'Gene', '4763', (165, 168)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (59, 78)) ('neoplasia type 2', 'Disease', 'MESH:D009369', (69, 85)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (125, 142)) ('mutations', 'Var', (8, 17)) ('NF1', 'Gene', (165, 168)) ('HNPs', 'Chemical', '-', (193, 197)) ('RET', 'Gene', '5979', (156, 159)) ('neurofibromatosis type 1', 'Gene', '4763', (125, 149)) ('neoplasia', 'Phenotype', 'HP:0002664', (69, 78)) ('HNPs', 'Disease', (193, 197)) ('neoplasia type 2', 'Disease', (69, 85)) ('VHL', 'Gene', (151, 154)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (94, 119)) ('predispose', 'Reg', (179, 189)) ('RET', 'Gene', (156, 159)) 83609 22584701 Twelve patients were found to have hereditary non-SDHx HNPs out of a total of 809 patients with HNP and 2084 with VHL: 11 with germline VHL mutations and one with a RET mutation. ('RET', 'Gene', '5979', (165, 168)) ('HNP', 'Gene', (96, 99)) ('VHL', 'Gene', '7428', (114, 117)) ('HNP', 'Gene', '11202', (96, 99)) ('SDHx', 'Chemical', '-', (50, 54)) ('HNP', 'Gene', '11202', (55, 58)) ('patients', 'Species', '9606', (82, 90)) ('HNP', 'Gene', (55, 58)) ('VHL', 'Gene', '7428', (136, 139)) ('RET', 'Gene', (165, 168)) ('VHL', 'Gene', (136, 139)) ('mutations', 'Var', (140, 149)) ('patients', 'Species', '9606', (7, 15)) ('HNPs', 'Chemical', '-', (55, 59)) ('VHL', 'Gene', (114, 117)) 83612 22584701 Thus far, the number of cases associated with mutations in SDHA gene is unknown. ('SDHA', 'Gene', (59, 63)) ('SDHA', 'Gene', '6389', (59, 63)) ('mutations', 'Var', (46, 55)) 83613 22584701 the prevalence of HNPs in carriers of SDHB and SDHD mutations. ('mutations', 'Var', (52, 61)) ('HNPs', 'Chemical', '-', (18, 22)) ('HNPs', 'Disease', (18, 22)) ('SDHD', 'Gene', '6392', (47, 51)) ('SDHD', 'Gene', (47, 51)) ('carriers', 'Reg', (26, 34)) ('SDHB', 'Gene', '6390', (38, 42)) ('SDHB', 'Gene', (38, 42)) 83615 22584701 SDHD mutations induced HNPs about 20 years earlier compared with SDHB mutations. ('induced', 'Reg', (15, 22)) ('mutations', 'Var', (5, 14)) ('HNPs', 'Chemical', '-', (23, 27)) ('SDHD', 'Gene', '6392', (0, 4)) ('SDHB', 'Gene', '6390', (65, 69)) ('SDHD', 'Gene', (0, 4)) ('HNPs', 'Disease', (23, 27)) ('SDHB', 'Gene', (65, 69)) 83617 22584701 What we currently know is that patients with mutations of SDHB, SDHC, and SDHD genes may develop tumors in the carotid body and the vagal, jugular, and tympanic paraganglia,. ('tympanic paraganglia', 'Disease', (152, 172)) ('SDHB', 'Gene', (58, 62)) ('mutations', 'Var', (45, 54)) ('tympanic paraganglia', 'Disease', 'MESH:D018058', (152, 172)) ('SDHC', 'Gene', '6391', (64, 68)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('SDHD', 'Gene', (74, 78)) ('SDHD', 'Gene', '6392', (74, 78)) ('tumors', 'Disease', (97, 103)) ('patients', 'Species', '9606', (31, 39)) ('tumors', 'Phenotype', 'HP:0002664', (97, 103)) ('SDHB', 'Gene', '6390', (58, 62)) ('develop', 'PosReg', (89, 96)) ('tumors', 'Disease', 'MESH:D009369', (97, 103)) ('SDHC', 'Gene', (64, 68)) 83673 22584701 Immunochemical staining with antibodies against SDHB protein has been found to be associated with germline mutations of the SDHB, SDHC, and SDHD genes (Figures 3A and B). ('SDHC', 'Gene', (130, 134)) ('SDHB', 'Gene', (124, 128)) ('associated', 'Reg', (82, 92)) ('mutations', 'Var', (107, 116)) ('SDHC', 'Gene', '6391', (130, 134)) ('SDHD', 'Gene', (140, 144)) ('protein', 'Protein', (53, 60)) ('SDHD', 'Gene', '6392', (140, 144)) ('SDHB', 'Gene', '6390', (48, 52)) ('SDHB', 'Gene', '6390', (124, 128)) ('SDHB', 'Gene', (48, 52)) 83725 20444291 3E), cytokeratin AE1/AE3 or epithelial membrane antigen (EMA). ('AE1', 'Gene', (17, 20)) ('AE1', 'Gene', '6521', (17, 20)) ('epithelial', 'Protein', (28, 38)) ('AE3', 'Gene', '6508', (21, 24)) ('cytokeratin', 'Var', (5, 16)) ('AE3', 'Gene', (21, 24)) 83768 34046479 Two years ago, the patient experienced chest pain and was diagnosed with acute myocardial infarction, with 25% stenosis in the left circumflex. ('patient', 'Species', '9606', (19, 26)) ('acute myocardial infarction', 'Disease', 'MESH:D009203', (73, 100)) ('chest pain', 'Disease', 'MESH:D002637', (39, 49)) ('chest pain', 'Disease', (39, 49)) ('stenosis', 'Var', (111, 119)) ('chest pain', 'Phenotype', 'HP:0100749', (39, 49)) ('acute myocardial infarction', 'Disease', (73, 100)) ('pain', 'Phenotype', 'HP:0012531', (45, 49)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (79, 100)) ('experienced', 'Reg', (27, 38)) 83821 34046479 Catecholamines can also cause the QT interval to be prolonged, which may induce torsade de pointes ventricular tachycardia and be life-threatening. ('torsade de pointes ventricular tachycardia', 'Disease', (80, 122)) ('torsade de pointes ventricular tachycardia', 'Disease', 'MESH:D016171', (80, 122)) ('ventricular tachycardia', 'Phenotype', 'HP:0004756', (99, 122)) ('Catecholamines', 'Chemical', 'MESH:D002395', (0, 14)) ('tachycardia', 'Phenotype', 'HP:0001649', (111, 122)) ('torsade de pointes', 'Phenotype', 'HP:0001664', (80, 98)) ('induce', 'Reg', (73, 79)) ('Catecholamines', 'Var', (0, 14)) ('QT interval', 'MPA', (34, 45)) ('torsade de pointe', 'Phenotype', 'HP:0001664', (80, 97)) 83870 32548001 Borderline values usually lead to false-positive diagnosis likely from stress and venipuncture. ('stress', 'Disease', 'MESH:D000079225', (71, 77)) ('stress', 'Disease', (71, 77)) ('Borderline values', 'Var', (0, 17)) 83872 32548001 More selective localization of the tumor can be done using radioactive tracers as they exhibit selective uptake in paraganglioma; besides, physiological tissues including 131I- or 123I-MIBG, 111In-somatostatin analogs, or 18F-dopa (or dopamine) PET. ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('paraganglioma', 'Disease', 'MESH:D010235', (115, 128)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('131I-', 'Var', (171, 176)) ('MIBG', 'Chemical', 'MESH:D019797', (185, 189)) ('tumor', 'Disease', (35, 40)) ('paraganglioma', 'Phenotype', 'HP:0002668', (115, 128)) ('123I-MIBG', 'Var', (180, 189)) ('dopamine', 'Chemical', 'MESH:D004298', (235, 243)) ('18F-dopa', 'Chemical', 'MESH:C043437', (222, 230)) ('paraganglioma', 'Disease', (115, 128)) 83902 32257461 24-hour fractionated urinary metanephrine and normetanephrine levels were 7483 and 8895 mug, respectively (normally <240 and <600). ('metanephrine', 'Chemical', 'MESH:D008676', (49, 61)) ('normetanephrine', 'Chemical', 'MESH:D009647', (46, 61)) ('normetanephrine levels', 'MPA', (46, 68)) ('metanephrine', 'Chemical', 'MESH:D008676', (29, 41)) ('7483', 'Var', (74, 78)) 83922 31876082 Sequencing analysis detected an EPAS1 mutation in all tumors tested, but not in the germline. ('detected', 'Reg', (20, 28)) ('EPAS1', 'Gene', '2034', (32, 37)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) ('mutation', 'Var', (38, 46)) ('tumors', 'Disease', (54, 60)) ('tumors', 'Phenotype', 'HP:0002664', (54, 60)) ('tumors', 'Disease', 'MESH:D009369', (54, 60)) ('EPAS1', 'Gene', (32, 37)) 83924 31876082 These tumors are grouped based on major implicated signaling pathways and include cluster 1 or pseudohypoxic tumors (mutations in VHL, SDH gene family, FH, and EPAS1), and cluster 2 ( mutations in kinase receptor signaling and protein translation pathways, such as RET, NF1, KIF1Bbeta, and TMEM127). ('NF1', 'Gene', (270, 273)) ('RET', 'Gene', (265, 268)) ('protein translation pathways', 'Pathway', (227, 255)) ('tumors', 'Phenotype', 'HP:0002664', (109, 115)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('pseudohypoxic tumors', 'Disease', (95, 115)) ('EPAS1', 'Gene', '2034', (160, 165)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('kinase receptor signaling', 'Pathway', (197, 222)) ('tumors', 'Disease', (109, 115)) ('pseudohypoxic tumors', 'Disease', 'MESH:D009369', (95, 115)) ('mutations', 'Var', (117, 126)) ('SDH', 'Gene', '10993', (135, 138)) (' mutations', 'Var', (183, 193)) ('tumors', 'Disease', (6, 12)) ('TMEM127', 'Gene', (290, 297)) ('VHL', 'Gene', (130, 133)) ('FH', 'Disease', 'MESH:D006938', (152, 154)) ('SDH', 'Gene', (135, 138)) ('RET', 'Gene', '5979', (265, 268)) ('tumors', 'Disease', 'MESH:D009369', (109, 115)) ('EPAS1', 'Gene', (160, 165)) ('NF1', 'Gene', '4763', (270, 273)) ('tumors', 'Disease', 'MESH:D009369', (6, 12)) ('VHL', 'Gene', '7428', (130, 133)) ('TMEM127', 'Gene', '55654', (290, 297)) 83925 31876082 Pacak-Zhuang syndrome is a recently described syndrome resulting from somatic gain-of-function mutations in hypoxia-inducible factor 2alpha (HIF-2alpha) encoded by the EPAS1 gene which occurs early in embryogenesis. ('HIF-2alpha', 'Gene', (141, 151)) ('hypoxia-inducible factor 2alpha', 'Gene', '2034', (108, 139)) ('gain-of-function', 'PosReg', (78, 94)) ('HIF-2alpha', 'Gene', '2034', (141, 151)) ('EPAS1', 'Gene', '2034', (168, 173)) ('Pacak-Zhuang syndrome', 'Disease', (0, 21)) ('EPAS1', 'Gene', (168, 173)) ('mutations', 'Var', (95, 104)) ('hypoxia-inducible factor 2alpha', 'Gene', (108, 139)) 83939 31876082 Mutational testing of both tumors revealed a Pro531Ser mutation at exon 12 of the EPAS1 gene. ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('EPAS1', 'Gene', (82, 87)) ('tumors', 'Disease', 'MESH:D009369', (27, 33)) ('tumors', 'Disease', (27, 33)) ('tumors', 'Phenotype', 'HP:0002664', (27, 33)) ('Pro531Ser', 'SUBSTITUTION', 'None', (45, 54)) ('Pro531Ser', 'Var', (45, 54)) ('EPAS1', 'Gene', '2034', (82, 87)) 83955 31876082 Whole genome, whole exome, and whole transcriptome sequencing analysis was done on the tumor sample, which confirmed an EPAS1 mutation, c.1591C>T; p.Pro531Ser, identical to the mutation detected previously in the left pheochromocytoma and the organ of Zuckerkandl paraganglioma. ('left pheochromocytoma', 'Disease', (213, 234)) ('p.Pro531Ser', 'Var', (147, 158)) ('paraganglioma', 'Disease', 'MESH:D010235', (264, 277)) ('p.Pro531Ser', 'Mutation', 'p.P531S', (147, 158)) ('EPAS1', 'Gene', '2034', (120, 125)) ('left pheochromocytoma', 'Disease', 'MESH:D010673', (213, 234)) ('tumor', 'Phenotype', 'HP:0002664', (87, 92)) ('EPAS1', 'Gene', (120, 125)) ('c.1591C>T; p.Pro531Ser', 'Var', (136, 158)) ('tumor', 'Disease', (87, 92)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (218, 234)) ('paraganglioma', 'Phenotype', 'HP:0002668', (264, 277)) ('tumor', 'Disease', 'MESH:D009369', (87, 92)) ('paraganglioma', 'Disease', (264, 277)) ('c.1591C>T', 'Mutation', 'c.1591C>T', (136, 145)) 83956 31876082 Allele frequency of EPAS1 mutation in the duodenal somatostatinoma was 27% on whole genome sequencing, 23% on whole exome sequencing, and 34% on transcriptome sequencing. ('EPAS1', 'Gene', '2034', (20, 25)) ('mutation', 'Var', (26, 34)) ('duodenal somatostatinoma', 'Disease', (42, 66)) ('EPAS1', 'Gene', (20, 25)) ('duodenal somatostatinoma', 'Disease', 'MESH:D013005', (42, 66)) 83959 31876082 Whole genome, exome and, transcriptome sequencing of the duodenal somatostatinoma showed an EPAS1 P531S mutation and 19p partial chromosomal loss and 9q partial chromosomal gain. ('duodenal somatostatinoma', 'Disease', (57, 81)) ('EPAS1', 'Gene', (92, 97)) ('P531S', 'Var', (98, 103)) ('duodenal somatostatinoma', 'Disease', 'MESH:D013005', (57, 81)) ('EPAS1', 'Gene', '2034', (92, 97)) ('P531S', 'Mutation', 'p.P531S', (98, 103)) 83960 31876082 This mutation is acquired postzygotically and distributed in a somatic mosaic fashion; in some reported patients, the EPAS1 mutation was detected at a lower frequency in some non-tumor cells namely leukocytes, buccal cells, hair and nails. ('tumor', 'Disease', 'MESH:D009369', (179, 184)) ('mutation', 'Var', (124, 132)) ('tumor', 'Phenotype', 'HP:0002664', (179, 184)) ('EPAS1', 'Gene', '2034', (118, 123)) ('EPAS1', 'Gene', (118, 123)) ('patients', 'Species', '9606', (104, 112)) ('tumor', 'Disease', (179, 184)) 83961 31876082 The EPAS1 mutation detected in our case is associated with stabilization and gain-of-function of HIF-2alpha protein because it directly affects the prolyl hydroxylase target residue, proline 531, impairing its hydroxylation and subsequent recognition of HIF-2alpha protein by VHL protein for subsequent proteasomal degradation. ('HIF-2alpha', 'Gene', '2034', (254, 264)) ('EPAS1', 'Gene', '2034', (4, 9)) ('VHL', 'Gene', (276, 279)) ('hydroxylation', 'MPA', (210, 223)) ('affects', 'Reg', (136, 143)) ('HIF-2alpha', 'Gene', (97, 107)) ('gain-of-function', 'PosReg', (77, 93)) ('EPAS1', 'Gene', (4, 9)) ('proteasomal degradation', 'MPA', (303, 326)) ('VHL', 'Gene', '7428', (276, 279)) ('mutation', 'Var', (10, 18)) ('proline', 'Chemical', 'MESH:D011392', (183, 190)) ('HIF-2alpha', 'Gene', '2034', (97, 107)) ('recognition', 'MPA', (239, 250)) ('HIF-2alpha', 'Gene', (254, 264)) ('impairing', 'NegReg', (196, 205)) 83962 31876082 Other reported EPAS1 mutations found to be associated with this syndrome affect the vicinity of the prolyl hydroxylase residues; examples include c.1588G>A p.A530T, c.1595A>G p.Y532C, c.1589C>T p.A530V, and c.1586T>C p.L529P. ('c.1586T>C p.L529P', 'Var', (207, 224)) ('vicinity', 'MPA', (84, 92)) ('c.1589C>T p.A530V', 'Var', (184, 201)) ('p.A530T', 'Mutation', 'p.A530T', (156, 163)) ('affect', 'Reg', (73, 79)) ('c.1595A>G p.Y532C', 'Var', (165, 182)) ('p.Y532C', 'Mutation', 'p.Y532C', (175, 182)) ('c.1589C>T', 'Mutation', 'c.1589C>T', (184, 193)) ('p.L529P', 'Mutation', 'p.L529P', (217, 224)) ('c.1595A>G', 'Mutation', 'c.1595A>G', (165, 174)) ('c.1588G>A p.A530T', 'Var', (146, 163)) ('EPAS1', 'Gene', '2034', (15, 20)) ('p.A530V', 'Mutation', 'p.A530V', (194, 201)) ('c.1586T>C', 'Mutation', 'c.1586T>C', (207, 216)) ('c.1588G>A', 'Mutation', 'c.1588G>A', (146, 155)) ('EPAS1', 'Gene', (15, 20)) 83963 31876082 Primary familial and congenital polycythemia is an autosomal dominant condition associated with increased erythropoietin sensitivity, due to EPOR gene mutation leading to truncated erythropoietin receptor, lacking the C-terminal negative regulatory domain. ('EPOR', 'Gene', '2057', (141, 145)) ('EPOR', 'Gene', (141, 145)) ('erythropoietin receptor', 'Gene', (181, 204)) ('truncated', 'MPA', (171, 180)) ('erythropoietin', 'Gene', (106, 120)) ('erythropoietin receptor', 'Gene', '2057', (181, 204)) ('mutation', 'Var', (151, 159)) ('erythropoietin', 'Gene', (181, 195)) ('congenital polycythemia', 'Disease', 'MESH:D011086', (21, 44)) ('erythropoietin', 'Gene', '2056', (106, 120)) ('congenital polycythemia', 'Disease', (21, 44)) ('erythropoietin', 'Gene', '2056', (181, 195)) ('polycythemia', 'Phenotype', 'HP:0001901', (32, 44)) 83978 31922078 Resection of the tumor with catecholamine function might have led to cardiogenic hypotension (blood pressure suddenly dropped from 129/64 mm Hg to 69/60 mm Hg). ('tumor', 'Disease', (17, 22)) ('cardiogenic hypotension', 'Disease', 'MESH:D007022', (69, 92)) ('Resection', 'Var', (0, 9)) ('catecholamine', 'Chemical', 'MESH:D002395', (28, 41)) ('cardiogenic hypotension', 'Disease', (69, 92)) ('tumor', 'Disease', 'MESH:D009369', (17, 22)) ('blood pressure', 'MPA', (94, 108)) ('hypotension', 'Phenotype', 'HP:0002615', (81, 92)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) ('dropped', 'NegReg', (118, 125)) ('led to', 'Reg', (62, 68)) 84006 31516537 Pleomorphism Mitosis Metastases All the above. ('Mitosis', 'Disease', 'None', (13, 20)) ('Mitosis', 'Disease', (13, 20)) ('Pleomorphism', 'Var', (0, 12)) ('Metastases', 'Disease', (21, 31)) ('Metastases', 'Disease', 'MESH:D009362', (21, 31)) 84085 31281701 Population-based studies have revealed association of single nucleotide polymorphism with saccular aneurysm and several genetic loci have been reported. ('saccular aneurysm', 'Disease', 'MESH:D000783', (90, 107)) ('single nucleotide polymorphism', 'Var', (54, 84)) ('saccular aneurysm', 'Disease', (90, 107)) ('aneurysm', 'Phenotype', 'HP:0002617', (99, 107)) ('association', 'Interaction', (39, 50)) 84086 31281701 Genetic polymorphism related to cerebral artery wall structure might increase the risk of aneurysm formation and rupture; however, this risk is less than factors such as smoking, hypertension, and female gender. ('increase', 'PosReg', (69, 77)) ('aneurysm', 'Disease', 'MESH:D000783', (90, 98)) ('hypertension', 'Disease', 'MESH:D006973', (179, 191)) ('aneurysm', 'Phenotype', 'HP:0002617', (90, 98)) ('hypertension', 'Disease', (179, 191)) ('hypertension', 'Phenotype', 'HP:0000822', (179, 191)) ('rupture', 'Disease', 'MESH:D012421', (113, 120)) ('aneurysm', 'Disease', (90, 98)) ('rupture', 'Disease', (113, 120)) ('Genetic polymorphism', 'Var', (0, 20)) 84113 29212506 Chromosome 9p copy number gains involving PD-L1 are associated with a specific proliferation and immune-modulating gene expression program active across major cancer types Inhibition of the PD-L1/PD-1 immune checkpoint axis represents one of the most promising approaches of immunotherapy for various cancer types. ('cancer', 'Disease', (159, 165)) ('PD-L1', 'Gene', '29126', (42, 47)) ('PD-1', 'Gene', (196, 200)) ('PD-L1', 'Gene', (190, 195)) ('PD-1', 'Gene', '5133', (196, 200)) ('cancer', 'Disease', 'MESH:D009369', (301, 307)) ('PD-L1', 'Gene', '29126', (190, 195)) ('copy number gains', 'Var', (14, 31)) ('active', 'MPA', (139, 145)) ('associated', 'Reg', (52, 62)) ('cancer', 'Disease', (301, 307)) ('cancer', 'Phenotype', 'HP:0002664', (159, 165)) ('PD-L1', 'Gene', (42, 47)) ('cancer', 'Phenotype', 'HP:0002664', (301, 307)) ('cancer', 'Disease', 'MESH:D009369', (159, 165)) 84115 29212506 Recently, recurrent copy number gains (CNG) in chromosome 9p involving PD-L1 were detected in many cancer types including lung cancer, melanoma, bladder cancer, head and neck cancer, cervical cancer, soft tissue sarcoma, prostate cancer, gastric cancer, ovarian cancer, and triple-negative breast cancer. ('soft tissue sarcoma', 'Disease', 'MESH:D012509', (200, 219)) ('cervical cancer', 'Disease', (183, 198)) ('cancer', 'Disease', (153, 159)) ('gastric cancer', 'Disease', (238, 252)) ('soft tissue sarcoma', 'Disease', (200, 219)) ('cancer', 'Disease', (175, 181)) ('gains', 'PosReg', (32, 37)) ('cancer', 'Disease', (192, 198)) ('cancer', 'Phenotype', 'HP:0002664', (153, 159)) ('bladder cancer', 'Phenotype', 'HP:0009725', (145, 159)) ('lung cancer', 'Disease', 'MESH:D008175', (122, 133)) ('cancer', 'Phenotype', 'HP:0002664', (192, 198)) ('cancer', 'Phenotype', 'HP:0002664', (175, 181)) ('breast cancer', 'Phenotype', 'HP:0003002', (290, 303)) ('cancer', 'Disease', 'MESH:D009369', (297, 303)) ('lung cancer', 'Phenotype', 'HP:0100526', (122, 133)) ('cancer', 'Disease', (246, 252)) ('melanoma', 'Disease', (135, 143)) ('gastric cancer', 'Disease', 'MESH:D013274', (238, 252)) ('cancer', 'Disease', 'MESH:D009369', (99, 105)) ('melanoma', 'Phenotype', 'HP:0002861', (135, 143)) ('PD-L1', 'Gene', (71, 76)) ('ovarian cancer', 'Disease', 'MESH:D010051', (254, 268)) ('PD-L1', 'Gene', '29126', (71, 76)) ('cancer', 'Phenotype', 'HP:0002664', (99, 105)) ('detected', 'Reg', (82, 90)) ('cancer', 'Disease', (230, 236)) ('cancer', 'Disease', (127, 133)) ('breast cancer', 'Disease', 'MESH:D001943', (290, 303)) ('breast cancer', 'Disease', (290, 303)) ('cancer', 'Disease', (262, 268)) ('cancer', 'Disease', 'MESH:D009369', (153, 159)) ('head and neck cancer', 'Phenotype', 'HP:0012288', (161, 181)) ('cancer', 'Phenotype', 'HP:0002664', (127, 133)) ('sarcoma', 'Phenotype', 'HP:0100242', (212, 219)) ('cancer', 'Disease', 'MESH:D009369', (175, 181)) ('cancer', 'Disease', 'MESH:D009369', (192, 198)) ('prostate cancer', 'Disease', 'MESH:D011471', (221, 236)) ('gastric cancer', 'Phenotype', 'HP:0012126', (238, 252)) ('ovarian cancer', 'Disease', (254, 268)) ('prostate cancer', 'Phenotype', 'HP:0012125', (221, 236)) ('cancer', 'Disease', 'MESH:D009369', (246, 252)) ('cancer', 'Disease', (297, 303)) ('lung cancer', 'Disease', (122, 133)) ('melanoma', 'Disease', 'MESH:D008545', (135, 143)) ('prostate cancer', 'Disease', (221, 236)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (254, 268)) ('head and neck cancer', 'Disease', 'MESH:D006258', (161, 181)) ('cancer', 'Disease', (99, 105)) ('cancer', 'Disease', 'MESH:D009369', (127, 133)) ('copy number', 'Var', (20, 31)) ('cancer', 'Disease', 'MESH:D009369', (230, 236)) ('soft tissue sarcoma', 'Phenotype', 'HP:0030448', (200, 219)) ('cancer', 'Disease', 'MESH:D009369', (262, 268)) ('cervical cancer', 'Disease', 'MESH:D002583', (183, 198)) ('bladder cancer', 'Disease', 'MESH:D001749', (145, 159)) ('bladder cancer', 'Disease', (145, 159)) 84123 29212506 PD-L1 copy number gains (CNG) are prevalent in significant subsets of different cancers including triple negative breast cancer, Hodgkin's lymphoma, cancer of unknown primary, NSCLC, SCLC, and gastric cancer. ('lymphoma', 'Phenotype', 'HP:0002665', (139, 147)) ('cancers', 'Disease', 'MESH:D009369', (80, 87)) ('cancer', 'Disease', (201, 207)) ('cancer', 'Phenotype', 'HP:0002664', (121, 127)) ('gastric cancer', 'Disease', 'MESH:D013274', (193, 207)) ('SCLC', 'Disease', 'MESH:D018288', (177, 181)) ("Hodgkin's lymphoma", 'Disease', (129, 147)) ('PD-L1', 'Gene', (0, 5)) ('cancer', 'Phenotype', 'HP:0002664', (201, 207)) ('PD-L1', 'Gene', '29126', (0, 5)) ('cancer', 'Disease', (80, 86)) ('cancer', 'Disease', 'MESH:D009369', (149, 155)) ('cancer', 'Phenotype', 'HP:0002664', (80, 86)) ('gastric cancer', 'Phenotype', 'HP:0012126', (193, 207)) ('cancer', 'Disease', 'MESH:D009369', (121, 127)) ('SCLC', 'Disease', (183, 187)) ('cancers', 'Phenotype', 'HP:0002664', (80, 87)) ('cancer', 'Disease', 'MESH:D009369', (201, 207)) ('cancer', 'Disease', (149, 155)) ('cancers', 'Disease', (80, 87)) ('SCLC', 'Disease', (177, 181)) ('cancer', 'Phenotype', 'HP:0002664', (149, 155)) ('NSCLC', 'Disease', 'MESH:D002289', (176, 181)) ("Hodgkin's lymphoma", 'Phenotype', 'HP:0012189', (129, 147)) ('cancer', 'Disease', 'MESH:D009369', (80, 86)) ('breast cancer', 'Phenotype', 'HP:0003002', (114, 127)) ('copy number gains', 'Var', (6, 23)) ('gastric cancer', 'Disease', (193, 207)) ("Hodgkin's lymphoma", 'Disease', 'MESH:D006689', (129, 147)) ('NSCLC', 'Disease', (176, 181)) ('breast cancer', 'Disease', 'MESH:D001943', (114, 127)) ('prevalent', 'Reg', (34, 43)) ('cancer', 'Disease', (121, 127)) ('SCLC', 'Disease', 'MESH:D018288', (183, 187)) ('breast cancer', 'Disease', (114, 127)) 84124 29212506 In particular, Hodgkin's lymphomas harboring PD-L1 CNG were reported to exhibit increased PD-L1 expression and to respond well to immune checkpoint inhibition. ('PD-L1', 'Gene', '29126', (45, 50)) ('PD-L1', 'Gene', '29126', (90, 95)) ('increased', 'PosReg', (80, 89)) ("Hodgkin's lymphomas", 'Disease', 'MESH:D006689', (15, 34)) ('expression', 'MPA', (96, 106)) ("Hodgkin's lymphoma", 'Phenotype', 'HP:0012189', (15, 33)) ("Hodgkin's lymphomas", 'Phenotype', 'HP:0012189', (15, 34)) ("Hodgkin's lymphomas", 'Disease', (15, 34)) ('lymphomas', 'Phenotype', 'HP:0002665', (25, 34)) ('lymphoma', 'Phenotype', 'HP:0002665', (25, 33)) ('CNG', 'Var', (51, 54)) ('increased PD', 'Phenotype', 'HP:0008151', (80, 92)) ('PD-L1', 'Gene', (45, 50)) ('PD-L1', 'Gene', (90, 95)) 84130 29212506 PD-L1 copy numbers alterations were evaluated using the calls reported by the TCGA consortium based on Affymetrix SNP 6.0 array data and the GISTIC 2.0 algorithm. ('PD-L1', 'Gene', (0, 5)) ('alterations', 'Var', (19, 30)) ('PD-L1', 'Gene', '29126', (0, 5)) ('copy numbers alterations', 'Var', (6, 30)) 84141 29212506 In a pan-cancer analysis and after Bonferroni correction for 22,849 genes, 74 of these were significantly associated with 9p gain status. ('cancer', 'Disease', (9, 15)) ('associated', 'Reg', (106, 116)) ('cancer', 'Phenotype', 'HP:0002664', (9, 15)) ('cancer', 'Disease', 'MESH:D009369', (9, 15)) ('9p gain status', 'Var', (122, 136)) 84150 29212506 Before, we showed that approximately half of the PD-L1 CNGs in the major cancer types occur together with amplification of chromosome 9p or the entire chromosome 9 (non-focal gains), while the other half of PD-L1 CNGs frequently co-occurs with gain of a 38-gene core amplified region located in chromosome 9p24 (focal gains). ('cancer', 'Disease', (73, 79)) ('gain', 'PosReg', (244, 248)) ('cancer', 'Disease', 'MESH:D009369', (73, 79)) ('PD-L1', 'Gene', (207, 212)) ('PD-L1', 'Gene', '29126', (49, 54)) ('cancer', 'Phenotype', 'HP:0002664', (73, 79)) ('PD-L1', 'Gene', '29126', (207, 212)) ('amplification', 'Var', (106, 119)) ('PD-L1', 'Gene', (49, 54)) 84154 29212506 In keeping with these data, we recently demonstrated that PD-L1 amplification accompanied by overexpression can also be used to identify patients with solid tumors who benefit from PD-1 blockade. ('PD-L1', 'Gene', '29126', (58, 63)) ('tumors', 'Phenotype', 'HP:0002664', (157, 163)) ('PD-1', 'Gene', (181, 185)) ('solid tumors', 'Disease', (151, 163)) ('amplification', 'Var', (64, 77)) ('PD-1', 'Gene', '5133', (181, 185)) ('tumor', 'Phenotype', 'HP:0002664', (157, 162)) ('patients', 'Species', '9606', (137, 145)) ('PD-L1', 'Gene', (58, 63)) ('solid tumors', 'Disease', 'MESH:D009369', (151, 163)) 84156 29212506 Testing for PD-L1 amplifications could be easily implemented in a routine setting using in situ hybridization based assays such as FISH or using targeted DNA sequencing. ('PD-L1', 'Gene', (12, 17)) ('FISH', 'Disease', (131, 135)) ('FISH', 'Disease', 'None', (131, 135)) ('PD-L1', 'Gene', '29126', (12, 17)) ('amplifications', 'Var', (18, 32)) 84158 29212506 Copy number and gene expression analyses uncovered additional potential drug targets, such as amplified and overexpressed JAK2 (Table 1), which has been implicated in the regulation of PD-L1 expression and appears to play a role in tumor growth and resistance to chemotherapy. ('JAK2', 'Gene', '3717', (122, 126)) ('amplified', 'Var', (94, 103)) ('play', 'Reg', (217, 221)) ('tumor', 'Disease', 'MESH:D009369', (232, 237)) ('overexpressed', 'PosReg', (108, 121)) ('tumor', 'Phenotype', 'HP:0002664', (232, 237)) ('JAK2', 'Gene', (122, 126)) ('PD-L1', 'Gene', (185, 190)) ('tumor', 'Disease', (232, 237)) ('role', 'Reg', (224, 228)) ('PD-L1', 'Gene', '29126', (185, 190)) 84174 29212506 Conversely, this IDO1-mediated mechanism of immune suppression can be exploited therapeutically by inhibition of the catalytic activity of IDO1 suggesting that dual inhibition of both PD-1 and IDO1 could be a promising approach to enhance efficacy of checkpoint blockade. ('IDO1', 'Gene', '3620', (193, 197)) ('IDO1', 'Gene', '3620', (139, 143)) ('inhibition', 'Var', (99, 109)) ('IDO1', 'Gene', '3620', (17, 21)) ('IDO1', 'Gene', (193, 197)) ('PD-1', 'Gene', (184, 188)) ('PD-1', 'Gene', '5133', (184, 188)) ('IDO1', 'Gene', (139, 143)) ('catalytic activity', 'MPA', (117, 135)) ('enhance', 'PosReg', (231, 238)) ('IDO1', 'Gene', (17, 21)) 84179 29212506 Recently, overexpression of TTK, another checkpoint in mitosis, was reported to occur in triple negative breast cancers, which frequently harbor PD-L1 amplifications. ('breast cancers', 'Disease', 'MESH:D001943', (105, 119)) ('mitosis', 'Disease', 'None', (55, 62)) ('breast cancers', 'Disease', (105, 119)) ('TTK', 'Gene', (28, 31)) ('TTK', 'Gene', '7272', (28, 31)) ('PD-L1', 'Gene', '29126', (145, 150)) ('cancers', 'Phenotype', 'HP:0002664', (112, 119)) ('amplifications', 'Var', (151, 165)) ('breast cancers', 'Phenotype', 'HP:0003002', (105, 119)) ('cancer', 'Phenotype', 'HP:0002664', (112, 118)) ('PD-L1', 'Gene', (145, 150)) ('mitosis', 'Disease', (55, 62)) ('breast cancer', 'Phenotype', 'HP:0003002', (105, 118)) 84180 29212506 In line with this finding, our analysis showed upregulation of TTK across many cancers that harbor CNG of 9p involving PD-L1. ('TTK', 'Gene', (63, 66)) ('cancers', 'Disease', (79, 86)) ('CNG of', 'Var', (99, 105)) ('cancer', 'Phenotype', 'HP:0002664', (79, 85)) ('TTK', 'Gene', '7272', (63, 66)) ('PD-L1', 'Gene', (119, 124)) ('upregulation', 'PosReg', (47, 59)) ('cancers', 'Phenotype', 'HP:0002664', (79, 86)) ('PD-L1', 'Gene', '29126', (119, 124)) ('cancers', 'Disease', 'MESH:D009369', (79, 86)) 84183 29212506 On a genome-wide scale, recurrent patterns of copy number alterations have been discovered across patients and cancer types suggesting their shaping by selective pressures and roles in tumor genesis and tumor growth. ('tumor', 'Disease', (185, 190)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('tumor', 'Disease', (203, 208)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('cancer', 'Phenotype', 'HP:0002664', (111, 117)) ('patients', 'Species', '9606', (98, 106)) ('tumor', 'Disease', 'MESH:D009369', (185, 190)) ('tumor', 'Disease', 'MESH:D009369', (203, 208)) ('cancer', 'Disease', (111, 117)) ('cancer', 'Disease', 'MESH:D009369', (111, 117)) ('copy number alterations', 'Var', (46, 69)) 84184 29212506 In a recent pan-cancer analysis, a copy number alteration signature has been linked up-regulation of glycolysis, while chromosome 8p loss in breast cancer has been linked to alterations in lipid metabolism. ('cancer', 'Disease', (148, 154)) ('cancer', 'Disease', 'MESH:D009369', (148, 154)) ('cancer', 'Phenotype', 'HP:0002664', (16, 22)) ('lipid', 'Chemical', 'MESH:D008055', (189, 194)) ('copy number alteration', 'Var', (35, 57)) ('cancer', 'Disease', 'MESH:D009369', (16, 22)) ('glycolysis', 'MPA', (101, 111)) ('cancer', 'Disease', (16, 22)) ('cancer', 'Phenotype', 'HP:0002664', (148, 154)) ('breast cancer', 'Disease', 'MESH:D001943', (141, 154)) ('loss', 'NegReg', (133, 137)) ('up-regulation', 'PosReg', (84, 97)) ('breast cancer', 'Disease', (141, 154)) ('alterations', 'Reg', (174, 185)) ('breast cancer', 'Phenotype', 'HP:0003002', (141, 154)) ('lipid metabolism', 'MPA', (189, 205)) 84185 29212506 Our observations support a view of copy number alterations as hard-wired genetic changes that maintain cancer hallmarks including 'self-sufficiency in growth' and 'evasion from the immune system' from Hanahan's and Weinberg's list. ('alterations', 'Var', (47, 58)) ('cancer', 'Phenotype', 'HP:0002664', (103, 109)) ("'self-sufficiency", 'MPA', (130, 147)) ('copy number alterations', 'Var', (35, 58)) ("'evasion", 'MPA', (163, 171)) ('sufficiency in growth', 'Phenotype', 'HP:0001510', (136, 157)) ('cancer', 'Disease', (103, 109)) ('cancer', 'Disease', 'MESH:D009369', (103, 109)) 84192 28435794 At age 16 he developed medullary thyroid cancer and was found to have multiple endocrine neoplasia type 2B with the characteristic M918T mutation of the RET proto-oncogene. ('multiple endocrine neoplasia type 2B', 'Gene', '5979', (70, 106)) ('RET', 'Gene', (153, 156)) ('cancer', 'Phenotype', 'HP:0002664', (41, 47)) ('M918T', 'Mutation', 'rs74799832', (131, 136)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (33, 47)) ('thyroid cancer', 'Disease', (33, 47)) ('M918T', 'Var', (131, 136)) ('thyroid cancer', 'Disease', 'MESH:D013964', (33, 47)) ('multiple endocrine neoplasia type 2B', 'Gene', (70, 106)) ('RET', 'Gene', '5979', (153, 156)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (23, 47)) ('neoplasia', 'Phenotype', 'HP:0002664', (89, 98)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (79, 98)) 84196 28435794 Multiple endocrine neoplasia type 2B (MEN2B) is caused by a mutation of the RET oncogene and is characterized by the presence of medullary thyroid cancer (MTC) in all affected individuals and variable presentations of pheochromocytoma, marfanoid body habitus, mucosal and eyelid neuromas, and ganglioneuromatosis of the gastrointestinal tract. ('mutation', 'Var', (60, 68)) ('cancer', 'Phenotype', 'HP:0002664', (147, 153)) ('ganglioneuromatosis', 'Phenotype', 'HP:0025151', (293, 312)) ('thyroid cancer', 'Disease', (139, 153)) ('neoplasia', 'Phenotype', 'HP:0002664', (19, 28)) ('ganglioneuromatosis of the gastrointestinal tract', 'Disease', (293, 342)) ('RET', 'Gene', (76, 79)) ('neuromas', 'Phenotype', 'HP:0030430', (279, 287)) ('MTC', 'Phenotype', 'HP:0002865', (155, 158)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (218, 234)) ('Multiple endocrine neoplasia type 2B', 'Gene', '5979', (0, 36)) ('thyroid cancer', 'Disease', 'MESH:D013964', (139, 153)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (129, 153)) ('caused by', 'Reg', (48, 57)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (139, 153)) ('pheochromocytoma', 'Disease', (218, 234)) ('Multiple endocrine neoplasia type 2B', 'Gene', (0, 36)) ('marfanoid body habitus', 'Phenotype', 'HP:0001519', (236, 258)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (9, 28)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (218, 234)) ('eyelid neuromas', 'Disease', (272, 287)) ('eyelid neuromas', 'Phenotype', 'HP:0010604', (272, 287)) ('MEN2B', 'Gene', (38, 43)) ('eyelid neuromas', 'Disease', 'MESH:D009463', (272, 287)) ('ganglioneuromatosis of the gastrointestinal tract', 'Disease', 'MESH:C563519', (293, 342)) ('RET', 'Gene', '5979', (76, 79)) ('MEN2B', 'Gene', '5979', (38, 43)) ('marfanoid body habitus', 'Disease', (236, 258)) 84219 28435794 It is caused by a gain-of-function mutation of the RET proto-oncogene, and is characterized by the early development of an aggressive form of MTC in all affected individuals. ('RET', 'Gene', '5979', (51, 54)) ('MTC', 'Phenotype', 'HP:0002865', (142, 145)) ('RET', 'Gene', (51, 54)) ('mutation', 'Var', (35, 43)) ('gain-of-function', 'PosReg', (18, 34)) 84224 28435794 Evidence linking this patients ACTH-secreting pituitary microadenoma directly with the RET mutation comes from other studies linking pituitary adenomas to syndromes causing pheochromocytoma/paraganglioma. ('pituitary adenomas', 'Phenotype', 'HP:0002893', (133, 151)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (133, 150)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (173, 203)) ('mutation', 'Var', (91, 99)) ('pituitary adenomas', 'Disease', (133, 151)) ('ACTH', 'Gene', '5443', (31, 35)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (173, 189)) ('pituitary microadenoma', 'Disease', (46, 68)) ('pheochromocytoma/paraganglioma', 'Disease', (173, 203)) ('RET', 'Gene', '5979', (87, 90)) ('pituitary microadenoma', 'Disease', 'MESH:D010900', (46, 68)) ('patients', 'Species', '9606', (22, 30)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (133, 151)) ('RET', 'Gene', (87, 90)) ('ACTH-secreting pituitary microadenoma', 'Phenotype', 'HP:0008291', (31, 68)) ('paraganglioma', 'Phenotype', 'HP:0002668', (190, 203)) ('ACTH', 'Gene', (31, 35)) 84227 28435794 AIP is a tumor-suppressor protein found mutated in pituitary adenomas.. One case of a growth hormone secreting adenoma in a patient with MEN2A and the RET C634F mutation has been reported. ('adenoma', 'Disease', 'MESH:D000236', (61, 68)) ('growth hormone secreting adenoma', 'Phenotype', 'HP:0011760', (86, 118)) ('RET', 'Gene', '5979', (151, 154)) ('tumor', 'Disease', (9, 14)) ('growth hormone', 'Chemical', 'MESH:D013006', (86, 100)) ('adenoma', 'Disease', (111, 118)) ('tumor', 'Disease', 'MESH:D009369', (9, 14)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (51, 69)) ('RET', 'Gene', (151, 154)) ('C634F', 'Mutation', 'rs75996173', (155, 160)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (51, 69)) ('adenoma', 'Disease', 'MESH:D000236', (111, 118)) ('patient', 'Species', '9606', (124, 131)) ('pituitary adenomas', 'Disease', (51, 69)) ('AIP', 'Gene', '9049', (0, 3)) ('MEN2A', 'Gene', (137, 142)) ('MEN2A', 'Gene', '5979', (137, 142)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('adenoma', 'Disease', (61, 68)) ('C634F', 'Var', (155, 160)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (51, 68)) ('AIP', 'Gene', (0, 3)) 84228 28435794 One case of a patient with MEN2A and Cushing disease has been reported who was found to have the RET C634A mutation. ('C634A', 'Var', (101, 106)) ('MEN2A', 'Gene', (27, 32)) ('Cushing disease', 'Phenotype', 'HP:0003118', (37, 52)) ('MEN2A', 'Gene', '5979', (27, 32)) ('RET', 'Gene', '5979', (97, 100)) ('patient', 'Species', '9606', (14, 21)) ('C634A', 'Mutation', 'c.634C>A', (101, 106)) ('RET', 'Gene', (97, 100)) ('Cushing disease', 'Disease', (37, 52)) ('Cushing disease', 'Disease', 'MESH:D047748', (37, 52)) 84231 26773571 HRAS mutation prevalence and associated expression patterns in pheochromocytoma Pheochromocytomas (PCC) and abdominal paragangliomas (PGL) display a highly diverse genetic background and recent gene expression profiling studies have shown that PCC and PGL (together PPGL) alter either kinase signaling pathways or the pseudo-hypoxia response pathway dependent of the genetic composition. ('kinase signaling pathways', 'Pathway', (286, 311)) ('paragangliomas', 'Phenotype', 'HP:0002668', (119, 133)) ('abdominal paragangliomas', 'Disease', 'MESH:D010235', (109, 133)) ('abdominal paragangliomas', 'Disease', (109, 133)) ('pheochromocytoma', 'Disease', (64, 80)) ('alter', 'Reg', (273, 278)) ('mutation', 'Var', (6, 14)) ('hypoxia', 'Disease', (326, 333)) ('hypoxia', 'Disease', 'MESH:D000860', (326, 333)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (81, 98)) ('HRAS', 'Gene', '3265', (1, 5)) ('Pheochromocytomas', 'Disease', (81, 98)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (64, 80)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (64, 80)) ('HRAS', 'Gene', (1, 5)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (81, 98)) 84232 26773571 Recurrent mutations in the Harvey rat sarcoma viral oncogene homolog (HRAS) have recently been verified in sporadic PPGLs. ('sarcoma', 'Disease', (38, 45)) ('sarcoma', 'Phenotype', 'HP:0100242', (38, 45)) ('HRAS', 'Gene', (70, 74)) ('rat', 'Species', '10116', (34, 37)) ('mutations', 'Var', (10, 19)) ('sarcoma', 'Disease', 'MESH:D012509', (38, 45)) 84233 26773571 In order to further establish the HRAS mutation frequency and to characterize the associated expression profiles of HRAS mutated tumors, 156 PPGLs for exon 2 and 3 hotspot mutations in the HRAS gene was screened, and compared with microarray-based gene expression profiles for 93 of the cases. ('mutations', 'Var', (172, 181)) ('tumors', 'Disease', (129, 135)) ('tumors', 'Disease', 'MESH:D009369', (129, 135)) ('tumors', 'Phenotype', 'HP:0002664', (129, 135)) ('HRAS', 'Gene', (189, 193)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) 84234 26773571 The activating HRAS mutations G13R, Q61R, and Q61K were found in 10/142 PCC (7.0%) and a Q61L mutation was revealed in 1/14 PGL (7.1%). ('G13R', 'Var', (30, 34)) ('Q61K', 'Var', (46, 50)) ('Q61K', 'Mutation', 'rs28933406', (46, 50)) ('activating', 'PosReg', (4, 14)) ('Q61R', 'Mutation', 'rs121913233', (36, 40)) ('Q61L', 'Mutation', 'rs121913233', (89, 93)) ('G13R', 'Mutation', 'rs104894228', (30, 34)) ('HRAS', 'Gene', (15, 19)) ('Q61R', 'Var', (36, 40)) 84236 26773571 HRAS mutated PPGL cluster together with NF1- and RET-mutated tumors associated with activation of kinase-signaling pathways. ('tumors', 'Disease', (61, 67)) ('tumors', 'Disease', 'MESH:D009369', (61, 67)) ('RET', 'Gene', '5979', (49, 52)) ('kinase-signaling pathways', 'Pathway', (98, 123)) ('NF1', 'Gene', (40, 43)) ('PPGL', 'Gene', (13, 17)) ('NF1', 'Gene', '4763', (40, 43)) ('RET', 'Gene', (49, 52)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('mutated', 'Var', (5, 12)) ('tumors', 'Phenotype', 'HP:0002664', (61, 67)) 84238 26773571 Although the majority of cases are benign, significant subsets of PGLs are malignant and often associated with inactivating SDHB gene mutations. ('SDHB', 'Gene', (124, 128)) ('inactivating', 'Var', (111, 123)) ('PGLs', 'Disease', (66, 70)) ('mutations', 'Var', (134, 143)) ('associated', 'Reg', (95, 105)) ('SDHB', 'Gene', '6390', (124, 128)) 84244 26773571 Cluster 1 with VHL, SDHx and EPAS1 mutated tumors is characterized by a pseudo-hypoxic response and Cluster 2 includes tumors with mutations in MAX, NF1, RET, and TMEM127 that are associated with active kinase-signaling pathways (Dahia et al., 2005). ('tumors', 'Phenotype', 'HP:0002664', (119, 125)) ('RET', 'Gene', (154, 157)) ('VHL', 'Gene', (15, 18)) ('SDHx', 'Gene', (20, 24)) ('NF1', 'Gene', (149, 152)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('tumors', 'Disease', (119, 125)) ('VHL', 'Gene', '7428', (15, 18)) ('EPAS1', 'Gene', '2034', (29, 34)) ('tumors', 'Phenotype', 'HP:0002664', (43, 49)) ('mutated', 'Var', (35, 42)) ('TMEM127', 'Gene', (163, 170)) ('MAX', 'Gene', (144, 147)) ('tumors', 'Disease', 'MESH:D009369', (119, 125)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('RET', 'Gene', '5979', (154, 157)) ('tumors', 'Disease', (43, 49)) ('mutations', 'Var', (131, 140)) ('TMEM127', 'Gene', '55654', (163, 170)) ('EPAS1', 'Gene', (29, 34)) ('NF1', 'Gene', '4763', (149, 152)) ('tumors', 'Disease', 'MESH:D009369', (43, 49)) 84245 26773571 Somatic mutations in the Harvey rat sarcoma viral oncogene homolog (HRAS) gene were first reported in a single pheochromocytoma (Yoshimoto et al., 1992), and HRAS was more recently verified as a recurrently mutated gene in PCC. ('pheochromocytoma', 'Disease', (111, 127)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (111, 127)) ('rat', 'Species', '10116', (32, 35)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (111, 127)) ('sarcoma', 'Disease', 'MESH:D012509', (36, 43)) ('mutations', 'Var', (8, 17)) ('sarcoma', 'Disease', (36, 43)) ('sarcoma', 'Phenotype', 'HP:0100242', (36, 43)) ('HRAS', 'Gene', (68, 72)) 84248 26773571 Mutations at the hotspots codons 13 and 61 activate the transforming properties of various tumor types, and hence these recurrent mutations are thought to propagate PPGL tumorigenesis for a subset of cases. ('activate', 'PosReg', (43, 51)) ('tumor', 'Disease', 'MESH:D009369', (170, 175)) ('PPGL', 'Disease', (165, 169)) ('tumor', 'Phenotype', 'HP:0002664', (170, 175)) ('tumor', 'Disease', 'MESH:D009369', (91, 96)) ('tumor', 'Disease', (170, 175)) ('Mutations', 'Var', (0, 9)) ('mutations', 'Var', (130, 139)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('transforming properties', 'CPA', (56, 79)) ('tumor', 'Disease', (91, 96)) ('propagate', 'Reg', (155, 164)) 84249 26773571 Germ-line HRAS mutations have been associated with the Costello syndrome, but to date no co-occurrence of this syndrome and PPGL has been reported (Crona et al., 2013; Luchetti et al., 2015). ('Costello syndrome', 'Disease', (55, 72)) ('HRAS', 'Gene', (10, 14)) ('mutations', 'Var', (15, 24)) ('associated', 'Reg', (35, 45)) ('Costello syndrome', 'Disease', 'MESH:D056685', (55, 72)) 84252 26773571 For Series A, a subset of the tumors (n = 54) had been characterized for mutations in 14 proposed PPGL susceptibility genes (EGLN1, EPAS1 KIF1Bbeta, MAX, MEN1, NF1, RET, SDHA, SDHB, SDHC, SDHD, SDHAF2, TMEM127, and VHL) (Welander et al., 2014a) and the remaining tumors (n = 21) were screened for mutations in 8 of these genes (EPAS1, MAX, NF1, SDHB, SDHD, RET, TMEM127, and VHL) (Welander et al., 2014b) (Supporting Information Table 1). ('MEN1', 'Gene', (154, 158)) ('tumors', 'Disease', (263, 269)) ('SDHB', 'Gene', (176, 180)) ('NF1', 'Gene', (160, 163)) ('SDHA', 'Gene', '6389', (170, 174)) ('SDHC', 'Gene', (182, 186)) ('SDHA', 'Gene', '6389', (194, 198)) ('VHL', 'Gene', '7428', (215, 218)) ('PPGL', 'Gene', (98, 102)) ('NF1', 'Gene', '4763', (340, 343)) ('tumors', 'Disease', 'MESH:D009369', (263, 269)) ('RET', 'Gene', '5979', (357, 360)) ('EPAS1', 'Gene', (132, 137)) ('SDHD', 'Gene', (351, 355)) ('EPAS1', 'Gene', (328, 333)) ('tumors', 'Phenotype', 'HP:0002664', (30, 36)) ('SDHD', 'Gene', '6392', (188, 192)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('NF1', 'Gene', (340, 343)) ('VHL', 'Gene', (375, 378)) ('SDHB', 'Gene', '6390', (345, 349)) ('tumors', 'Disease', (30, 36)) ('RET', 'Gene', '5979', (165, 168)) ('EGLN1', 'Gene', '54583', (125, 130)) ('TMEM127', 'Gene', (362, 369)) ('RET', 'Gene', (357, 360)) ('SDHD', 'Gene', (188, 192)) ('SDHC', 'Gene', '6391', (182, 186)) ('EPAS1', 'Gene', '2034', (132, 137)) ('tumors', 'Phenotype', 'HP:0002664', (263, 269)) ('TMEM127', 'Gene', (202, 209)) ('EPAS1', 'Gene', '2034', (328, 333)) ('EGLN1', 'Gene', (125, 130)) ('SDHB', 'Gene', '6390', (176, 180)) ('tumors', 'Disease', 'MESH:D009369', (30, 36)) ('VHL', 'Gene', '7428', (375, 378)) ('MEN1', 'Gene', '4221', (154, 158)) ('VHL', 'Gene', (215, 218)) ('SDHB', 'Gene', (345, 349)) ('TMEM127', 'Gene', '55654', (362, 369)) ('NF1', 'Gene', '4763', (160, 163)) ('mutations', 'Var', (297, 306)) ('tumor', 'Phenotype', 'HP:0002664', (263, 268)) ('SDHAF2', 'Gene', '54949', (194, 200)) ('RET', 'Gene', (165, 168)) ('SDHAF2', 'Gene', (194, 200)) ('SDHA', 'Gene', (170, 174)) ('SDHA', 'Gene', (194, 198)) ('TMEM127', 'Gene', '55654', (202, 209)) ('mutations', 'Var', (73, 82)) ('SDHD', 'Gene', '6392', (351, 355)) 84253 26773571 Furthermore, all tumors in Series C and D were previously analyzed for mutations in the 8 genes (EPAS1, MAX, NF1, SDHB, SDHD, RET, TMEM127, and VHL) (Welander et al., 2014b) (Supporting Information Table 1). ('tumors', 'Disease', (17, 23)) ('SDHB', 'Gene', (114, 118)) ('TMEM127', 'Gene', '55654', (131, 138)) ('SDHD', 'Gene', '6392', (120, 124)) ('NF1', 'Gene', '4763', (109, 112)) ('VHL', 'Gene', '7428', (144, 147)) ('tumors', 'Disease', 'MESH:D009369', (17, 23)) ('NF1', 'Gene', (109, 112)) ('MAX', 'Gene', (104, 107)) ('mutations', 'Var', (71, 80)) ('SDHD', 'Gene', (120, 124)) ('RET', 'Gene', '5979', (126, 129)) ('EPAS1', 'Gene', (97, 102)) ('tumors', 'Phenotype', 'HP:0002664', (17, 23)) ('SDHB', 'Gene', '6390', (114, 118)) ('TMEM127', 'Gene', (131, 138)) ('RET', 'Gene', (126, 129)) ('EPAS1', 'Gene', '2034', (97, 102)) ('VHL', 'Gene', (144, 147)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) 84254 26773571 For Series B, a subset of patients exhibited established PPGL syndromes with associated mutations (Supporting Information Table 1). ('PPGL syndromes', 'Disease', (57, 71)) ('mutations', 'Var', (88, 97)) ('patients', 'Species', '9606', (26, 34)) ('exhibited', 'Reg', (35, 44)) 84262 26773571 Within the cohort, tumors with known somatic mutations in EPAS1, KIF1Bb, MAX, NF1, RET, SDHA, SDHB, TMEM127, and VHL were included (Supporting Information Table 1). ('tumors', 'Disease', (19, 25)) ('RET', 'Gene', (83, 86)) ('NF1', 'Gene', '4763', (78, 81)) ('SDHA', 'Gene', (88, 92)) ('SDHB', 'Gene', '6390', (94, 98)) ('tumors', 'Disease', 'MESH:D009369', (19, 25)) ('KIF1Bb', 'Gene', (65, 71)) ('SDHA', 'Gene', '6389', (88, 92)) ('EPAS1', 'Gene', (58, 63)) ('NF1', 'Gene', (78, 81)) ('TMEM127', 'Gene', (100, 107)) ('SDHB', 'Gene', (94, 98)) ('VHL', 'Gene', (113, 116)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('mutations', 'Var', (45, 54)) ('TMEM127', 'Gene', '55654', (100, 107)) ('RET', 'Gene', '5979', (83, 86)) ('EPAS1', 'Gene', '2034', (58, 63)) ('VHL', 'Gene', '7428', (113, 116)) 84266 26773571 A HRAS mutation was found in 11 out of 156 tumors screened (142 PCCs and 14 PGLs), equaling a total frequency of 7.1% (11/156) in our cohort (Table 1). ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('mutation', 'Var', (7, 15)) ('found', 'Reg', (20, 25)) ('tumors', 'Disease', (43, 49)) ('tumors', 'Phenotype', 'HP:0002664', (43, 49)) ('HRAS', 'Gene', (2, 6)) ('tumors', 'Disease', 'MESH:D009369', (43, 49)) 84267 26773571 One mutation was found in exon 2 (G13R) and ten mutations were found in exon 3 (six Q61R, three Q61K, and one Q61L) (Table 1, Fig. ('Q61R', 'Var', (84, 88)) ('G13R', 'Mutation', 'rs104894228', (34, 38)) ('Q61L', 'Mutation', 'rs121913233', (110, 114)) ('Q61R', 'Mutation', 'rs121913233', (84, 88)) ('Q61K', 'Var', (96, 100)) ('Q61K', 'Mutation', 'rs28933406', (96, 100)) 84268 26773571 Regarding clinical parameters, no mutations were found in PPGLs classified as malignant according to the current WHO criteria and the patients endowed with a HRAS mutation tended to have higher age at diagnosis (mean 63 +-10 years) compared with those without HRAS mutation (mean 54 +-16 years) however this association did not reach statistical significance (two-tailed Mann-Whitney U-test, P = 0.08). ('HRAS', 'Gene', (158, 162)) ('mutation', 'Var', (163, 171)) ('patients', 'Species', '9606', (134, 142)) ('higher', 'PosReg', (187, 193)) 84271 26773571 This showed that the seven HRAS mutated PPGL clustered together with the tumors endowed with mutations in the NF1 and RET genes, associated with PIK3/AKT/mTOR and RAS/RAF activation in Cluster 2 (Fig. ('NF1', 'Gene', '4763', (110, 113)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('tumors', 'Disease', (73, 79)) ('mTOR', 'Gene', (154, 158)) ('RAF', 'Gene', '22882', (167, 170)) ('NF1', 'Gene', (110, 113)) ('PPGL', 'Gene', (40, 44)) ('RET', 'Gene', '5979', (118, 121)) ('AKT', 'Gene', '207', (150, 153)) ('tumors', 'Disease', 'MESH:D009369', (73, 79)) ('mTOR', 'Gene', '2475', (154, 158)) ('RAF', 'Gene', (167, 170)) ('PIK3', 'Gene', (145, 149)) ('PIK3', 'Gene', '5294', (145, 149)) ('RET', 'Gene', (118, 121)) ('mutated', 'Var', (32, 39)) ('activation', 'PosReg', (171, 181)) ('tumors', 'Phenotype', 'HP:0002664', (73, 79)) ('AKT', 'Gene', (150, 153)) 84274 26773571 Subsequently, the 7 HRAS mutated tumors were compared with 91 HRAS wild-type tumors using the complete set of probe sets on the array. ('tumors', 'Disease', (77, 83)) ('tumors', 'Disease', 'MESH:D009369', (77, 83)) ('tumors', 'Phenotype', 'HP:0002664', (77, 83)) ('tumor', 'Phenotype', 'HP:0002664', (33, 38)) ('tumor', 'Phenotype', 'HP:0002664', (77, 82)) ('tumors', 'Disease', 'MESH:D009369', (33, 39)) ('tumors', 'Phenotype', 'HP:0002664', (33, 39)) ('tumors', 'Disease', (33, 39)) ('mutated', 'Var', (25, 32)) 84277 26773571 One single mutation was found in exon 2 (G13R) and ten mutations were found in exon 3 (six Q61R, three Q61K and one Q61L). ('Q61K', 'Mutation', 'rs28933406', (103, 107)) ('Q61R', 'Var', (91, 95)) ('Q61R', 'Mutation', 'rs121913233', (91, 95)) ('Q61L', 'Mutation', 'rs121913233', (116, 120)) ('Q61K', 'Var', (103, 107)) ('G13R', 'Mutation', 'rs104894228', (41, 45)) 84280 26773571 The observed male:female proportion is in line with the results shown in two studies (Oudijk et al., 2014; Castro-Vega et al., 2015), but conflicting the results shown in an earlier study (Crona et al., 2013) where 4/4 patients with HRAS mutations were men. ('patients', 'Species', '9606', (219, 227)) ('men', 'Species', '9606', (253, 256)) ('mutations', 'Var', (238, 247)) ('HRAS', 'Gene', (233, 237)) 84282 26773571 None of the HRAS mutated tumors in our cohort were malignant according to the WHO criteria, suggesting a role of HRAS mutations as a somatic driver event in benign PPGL. ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('tumors', 'Disease', (25, 31)) ('tumors', 'Phenotype', 'HP:0002664', (25, 31)) ('mutations', 'Var', (118, 127)) ('tumors', 'Disease', 'MESH:D009369', (25, 31)) ('HRAS', 'Gene', (113, 117)) 84283 26773571 Activating mutations in the HRAS gene are known to affect MAPK signaling (Balmain and Pragnell, 1983), and as might be expected, all seven HRAS mutated cases included in the microarray-based profiling were grouped in Cluster 2 together with tumors harboring mutations in the NF1, MAX, RET and TMEM127 genes associated with PIK3/AKT/mTOR and RAS/RAF activation. ('mutations', 'Var', (11, 20)) ('tumors', 'Disease', 'MESH:D009369', (241, 247)) ('AKT', 'Gene', '207', (328, 331)) ('PIK3', 'Gene', (323, 327)) ('RAF', 'Gene', (345, 348)) ('MAX', 'Gene', (280, 283)) ('PIK3', 'Gene', '5294', (323, 327)) ('NF1', 'Gene', '4763', (275, 278)) ('RET', 'Gene', '5979', (285, 288)) ('TMEM127', 'Gene', (293, 300)) ('HRAS', 'Gene', (28, 32)) ('NF1', 'Gene', (275, 278)) ('TMEM127', 'Gene', '55654', (293, 300)) ('affect', 'Reg', (51, 57)) ('tumors', 'Phenotype', 'HP:0002664', (241, 247)) ('activation', 'PosReg', (349, 359)) ('RET', 'Gene', (285, 288)) ('AKT', 'Gene', (328, 331)) ('mTOR', 'Gene', (332, 336)) ('tumor', 'Phenotype', 'HP:0002664', (241, 246)) ('mutations', 'Var', (258, 267)) ('tumors', 'Disease', (241, 247)) ('RAF', 'Gene', '22882', (345, 348)) ('mTOR', 'Gene', '2475', (332, 336)) ('MAPK signaling', 'MPA', (58, 72)) 84285 26773571 Tumors with HRAS mutations exhibited higher expression of the PNMT gene encoding the PNMT enzyme that catalyzes the conversion (methylation) between norepinephrine and epinephrine. ('PNMT', 'Gene', '5409', (85, 89)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('expression', 'MPA', (44, 54)) ('PNMT', 'Gene', '5409', (62, 66)) ('norepinephrine', 'Chemical', 'MESH:D009638', (149, 163)) ('higher', 'PosReg', (37, 43)) ('PNMT', 'Gene', (85, 89)) ('conversion', 'MPA', (116, 126)) ('epinephrine', 'Chemical', 'MESH:D004837', (168, 179)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('PNMT', 'Gene', (62, 66)) ('epinephrine', 'Chemical', 'MESH:D004837', (152, 163)) ('mutations', 'Var', (17, 26)) ('HRAS', 'Gene', (12, 16)) 84290 26773571 Based on the analyses using the entire probe set on the array, PTPRZ1 was found to be the most up-regulated gene in HRAS mutated PPGL compared with HRAS wild-type tumors (Table 3). ('PTPRZ1', 'Gene', '5803', (63, 69)) ('PTPRZ1', 'Gene', (63, 69)) ('PPGL', 'Gene', (129, 133)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('mutated', 'Var', (121, 128)) ('tumors', 'Disease', (163, 169)) ('tumors', 'Disease', 'MESH:D009369', (163, 169)) ('tumors', 'Phenotype', 'HP:0002664', (163, 169)) ('up-regulated', 'PosReg', (95, 107)) 84292 26773571 HRAS mutated cases were grouped into Cluster 2 and somatic HRAS mutations did not occur in patients with a known PPGL susceptibility gene mutation or in patients with malignant PPGL. ('patients', 'Species', '9606', (91, 99)) ('patients', 'Species', '9606', (153, 161)) ('PPGL', 'Gene', (113, 117)) ('mutations', 'Var', (64, 73)) ('mutation', 'Var', (138, 146)) 84297 25400380 We present a case of recurrent malignant pheochromocytoma with unusual site of metastasis in omentum, which was positive on 68Ga-DOTANOC PET/CT and 131I-MIBG single-photon emission computed tomography (SPECT/)/CT scintigraphy. ('positive', 'Reg', (112, 120)) ('131I-MIBG', 'Chemical', '-', (148, 157)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (41, 57)) ('DOTANOC', 'Chemical', '-', (129, 136)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (31, 57)) ('131I-MIBG', 'Var', (148, 157)) ('malignant pheochromocytoma', 'Disease', (31, 57)) 84314 25400380 On the other hand, uptake of 131I-MIBG is dependent on the expression of vesicular monoamine transporters (VMAT 1, 2). ('131I-MIBG', 'Var', (29, 38)) ('VMAT 1', 'Gene', (107, 113)) ('uptake', 'MPA', (19, 25)) ('131I-MIBG', 'Chemical', '-', (29, 38)) ('dependent', 'Reg', (42, 51)) ('VMAT 1', 'Gene', '6570', (107, 113)) 84321 25400380 But 131I-MIBG was strongly positive, which altered the patient management, and the patient was taken for 131I MIBG therapy. ('131I-MIBG', 'Chemical', '-', (4, 13)) ('131I MIBG', 'Chemical', '-', (105, 114)) ('131I-MIBG', 'Var', (4, 13)) ('patient', 'Species', '9606', (55, 62)) ('patient', 'Species', '9606', (83, 90)) ('altered', 'Reg', (43, 50)) 84454 23594404 Urinary normetanephrine was elevated at 5412 mug/24 hr. ('Urinary normetanephrine', 'MPA', (0, 23)) ('normetanephrine', 'Chemical', 'MESH:D009647', (8, 23)) ('5412 mug/24', 'Var', (40, 51)) ('elevated', 'PosReg', (28, 36)) ('Urinary normetanephrine', 'Phenotype', 'HP:0003345', (0, 23)) 84533 18310300 All 43 patients (24 women and 19 men; mean age 44.6+-13.6 years; range 18-75 years; 9 with malignant, 7 extra-adrenal, and 27 benign) showed multiple copy number losses or gains. ('multiple copy number losses', 'Var', (141, 168)) ('women', 'Species', '9606', (20, 25)) ('men', 'Species', '9606', (22, 25)) ('men', 'Species', '9606', (33, 36)) ('gains', 'PosReg', (172, 177)) ('patients', 'Species', '9606', (7, 15)) 84534 18310300 The average copy number change was 13.10 in malignant, 13.93 in benign, and 13.47 in paraganglioma patients. ('paraganglioma', 'Phenotype', 'HP:0002668', (85, 98)) ('paraganglioma', 'Disease', (85, 98)) ('patients', 'Species', '9606', (99, 107)) ('paraganglioma', 'Disease', 'MESH:D010235', (85, 98)) ('copy number change', 'Var', (12, 30)) 84544 18310300 In sporadic pheochromocytomas and paragangliomas, ~20% of them are associated with germline mutations that lead to paraganglioma syndrome (succinate dehydrogenase subunit B/C/D; SDHB, SDHC, and SDHD), von Hippel-Lindau syndrome (VHL), and multiple endocrine neoplasia type II (MEN2) and, to a much lesser extent, type 1 neurofibromatosis (NF1). ('neoplasia', 'Phenotype', 'HP:0002664', (258, 267)) ('neurofibromatosis', 'Disease', 'MESH:C537392', (320, 337)) ('SDHD', 'Gene', (194, 198)) ('multiple endocrine neoplasia type II', 'Disease', (239, 275)) ('multiple endocrine neoplasia type II', 'Disease', 'MESH:D018761', (239, 275)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (12, 29)) ('NF1', 'Gene', '4763', (339, 342)) ('neurofibromatosis', 'Disease', (320, 337)) ('VHL', 'Disease', 'MESH:D006623', (229, 232)) ('paragangliomas', 'Disease', (34, 48)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (12, 28)) ('NF1', 'Gene', (339, 342)) ('lead to', 'Reg', (107, 114)) ('paraganglioma syndrome', 'Disease', (115, 137)) ('MEN', 'Species', '9606', (277, 280)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (248, 267)) ('mutations', 'Var', (92, 101)) ('paraganglioma', 'Phenotype', 'HP:0002668', (115, 128)) ('associated', 'Reg', (67, 77)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (12, 29)) ('SDHB', 'Gene', '6390', (178, 182)) ('VHL', 'Disease', (229, 232)) ('pheochromocytomas', 'Disease', (12, 29)) ('SDHD', 'Gene', '6392', (194, 198)) ('paragangliomas', 'Disease', 'MESH:D010235', (34, 48)) ('paraganglioma', 'Phenotype', 'HP:0002668', (34, 47)) ('paragangliomas', 'Phenotype', 'HP:0002668', (34, 48)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (320, 337)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (115, 137)) ('von Hippel-Lindau syndrome', 'Disease', (201, 227)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (201, 227)) ('SDHB', 'Gene', (178, 182)) 84589 18310300 The most obvious difference between malignant and benign tumors is the duplication of ERBB-2 gene locus on chromosome 17q21. ('duplication', 'Var', (71, 82)) ('benign tumors', 'Disease', 'MESH:D009369', (50, 63)) ('benign tumors', 'Disease', (50, 63)) ('tumor', 'Phenotype', 'HP:0002664', (57, 62)) ('tumors', 'Phenotype', 'HP:0002664', (57, 63)) ('ERBB-2', 'Gene', (86, 92)) 84601 18310300 The deletion occurred in all three types of pheochromocytomas with similar frequency; therefore, this may be indicative of early events in the tumorigenesis of sporadic pheochromocytoma. ('pheochromocytoma', 'Disease', (169, 185)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (44, 61)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (169, 185)) ('tumor', 'Disease', (143, 148)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (169, 185)) ('pheochromocytoma', 'Disease', (44, 60)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (44, 60)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (44, 60)) ('deletion', 'Var', (4, 12)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (44, 61)) ('tumor', 'Disease', 'MESH:D009369', (143, 148)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) ('pheochromocytomas', 'Disease', (44, 61)) 84605 18310300 In the present study, ERBB-2 oncogene duplication was observed most frequently in malignant tumors. ('ERBB-2', 'Gene', (22, 28)) ('malignant tumors', 'Disease', (82, 98)) ('observed', 'Reg', (54, 62)) ('duplication', 'Var', (38, 49)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('malignant tumors', 'Disease', 'MESH:D018198', (82, 98)) ('tumors', 'Phenotype', 'HP:0002664', (92, 98)) 84608 18310300 Overexpression of the ERBB-2, a breast cancer marker, is associated with rapid tumor growth, increased risk of recurrence after surgery, poor response to conventional chemotherapy, and shortened survival, and this ERBB-2 overexpression has also been implicated in the neoplastic transformation of prostate cancer. ('breast cancer', 'Disease', (32, 45)) ('overexpression', 'PosReg', (221, 235)) ('breast cancer', 'Phenotype', 'HP:0003002', (32, 45)) ('tumor', 'Disease', (79, 84)) ('ERBB-2', 'Gene', (22, 28)) ('shortened', 'NegReg', (185, 194)) ('implicated', 'Reg', (250, 260)) ('cancer', 'Phenotype', 'HP:0002664', (306, 312)) ('neoplastic transformation of prostate cancer', 'Disease', 'MESH:D011471', (268, 312)) ('prostate cancer', 'Phenotype', 'HP:0012125', (297, 312)) ('cancer', 'Phenotype', 'HP:0002664', (39, 45)) ('Overexpression', 'Var', (0, 14)) ('tumor', 'Disease', 'MESH:D009369', (79, 84)) ('breast cancer', 'Disease', 'MESH:D001943', (32, 45)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) ('neoplastic transformation of prostate cancer', 'Disease', (268, 312)) 84610 18310300 Antibody against ERBB-2 has been FDA approved for clinical treatment of cancer under the brand name Herceptin. ('cancer', 'Phenotype', 'HP:0002664', (72, 78)) ('Herceptin', 'Chemical', 'MESH:D000068878', (100, 109)) ('ERBB-2', 'Gene', (17, 23)) ('Antibody', 'Var', (0, 8)) ('men', 'Species', '9606', (64, 67)) ('cancer', 'Disease', 'MESH:D009369', (72, 78)) ('cancer', 'Disease', (72, 78)) 84643 33403195 Additional immunohistochemistry was performed that demonstrated S100 positivity in the high-grade, spindle-cell component of the tumor and chromogranin A, and synaptophysin staining in the sustentacular cells of the paraganglioma component. ('S100', 'Gene', (64, 68)) ('chromogranin A', 'Gene', (139, 153)) ('paraganglioma component', 'Disease', 'MESH:D010235', (216, 239)) ('synaptophysin', 'Gene', '6855', (159, 172)) ('S100', 'Gene', '6271', (64, 68)) ('tumor', 'Disease', 'MESH:D009369', (129, 134)) ('paraganglioma', 'Phenotype', 'HP:0002668', (216, 229)) ('positivity', 'Var', (69, 79)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('tumor', 'Disease', (129, 134)) ('paraganglioma component', 'Disease', (216, 239)) ('synaptophysin', 'Gene', (159, 172)) ('chromogranin A', 'Gene', '1113', (139, 153)) 84685 33403195 Some SDH mutations (i.e., SDHB) are associated with a significantly increased risk of malignant paraganglioma, whereas NF1 mutations may predispose to MPNST, as seen in our patient. ('SDH', 'Gene', (5, 8)) ('predispose', 'Reg', (138, 148)) ('patient', 'Species', '9606', (174, 181)) ('mutations', 'Var', (9, 18)) ('malignant paraganglioma', 'Disease', (86, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('SDHB', 'Gene', '6390', (26, 30)) ('NF1', 'Gene', (120, 123)) ('malignant paraganglioma', 'Disease', 'MESH:C565335', (86, 109)) ('SDHB', 'Gene', (26, 30)) ('SDH', 'Gene', '6390', (26, 29)) ('NF1', 'Gene', '4763', (120, 123)) ('SDH', 'Gene', '6390', (5, 8)) ('MPNST', 'Disease', (152, 157)) ('MPNST', 'Phenotype', 'HP:0100697', (152, 157)) ('SDH', 'Gene', (26, 29)) 84688 33403195 Nevertheless, we believe that characterization of the causative genetic mutation(s) could have helped inform the patient's initial decision to proceed with radiation treatment (e.g., if an underlying NF1 mutation had been identified). ('NF1', 'Gene', (200, 203)) ('mutation', 'Var', (204, 212)) ('NF1', 'Gene', '4763', (200, 203)) ('patient', 'Species', '9606', (113, 120)) 84741 32269189 The NF1 gene acts as a tumor-suppressor; thus, NF1 gene deficiency results in the overexpression of the RAS pathway followed by varying cancer developments including breast cancer. ('cancer', 'Disease', 'MESH:D009369', (173, 179)) ('breast cancer', 'Disease', 'MESH:D001943', (166, 179)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('cancer', 'Disease', (136, 142)) ('NF1', 'Gene', '4763', (47, 50)) ('breast cancer', 'Disease', (166, 179)) ('cancer', 'Phenotype', 'HP:0002664', (136, 142)) ('NF1', 'Gene', (47, 50)) ('NF1', 'Gene', '4763', (4, 7)) ('RAS pathway', 'Pathway', (104, 115)) ('cancer', 'Disease', (173, 179)) ('cancer', 'Disease', 'MESH:D009369', (136, 142)) ('overexpression', 'PosReg', (82, 96)) ('NF1', 'Gene', (4, 7)) ('cancer', 'Phenotype', 'HP:0002664', (173, 179)) ('tumor', 'Disease', (23, 28)) ('tumor', 'Disease', 'MESH:D009369', (23, 28)) ('deficiency', 'Var', (56, 66)) ('breast cancer', 'Phenotype', 'HP:0003002', (166, 179)) 84744 32269189 This increases the possibility that mutation, deletion, or duplication of the NF1 gene may affect the BRCA1 gene. ('BRCA1', 'Gene', (102, 107)) ('deletion', 'Var', (46, 54)) ('affect', 'Reg', (91, 97)) ('duplication', 'Var', (59, 70)) ('NF1', 'Gene', (78, 81)) ('NF1', 'Gene', '4763', (78, 81)) ('BRCA1', 'Gene', '672', (102, 107)) ('mutation', 'Var', (36, 44)) 84745 32269189 There is another possibility that types of NF1 mutations, including non-sense mutations and missense mutations determine the different breast cancer risk between individuals. ('non-sense mutations', 'Var', (68, 87)) ('breast cancer', 'Phenotype', 'HP:0003002', (135, 148)) ('cancer', 'Phenotype', 'HP:0002664', (142, 148)) ('NF1', 'Gene', (43, 46)) ('NF1', 'Gene', '4763', (43, 46)) ('determine', 'Reg', (111, 120)) ('breast cancer', 'Disease', 'MESH:D001943', (135, 148)) ('breast cancer', 'Disease', (135, 148)) ('missense mutations', 'Var', (92, 110)) 84774 31929915 His lab work was most notable for leukocytosis (12.2 x 109/muL, n < 10), normocytic anemia (Hb 7.8 g/dL, n = 14 - 17), thrombocytopenia (100 x 109/L, n = 150 - 450), deranged renal function (BUN 124 mg/dL, n < 20, creatinine 21.6 mg/dL, n < 1.3), proteinuria (>=500 mg/dL, n < 20), mild hematuria with metabolic acidosis (pH of 7.25), and anion (gap of 20). ('metabolic acidosis', 'Phenotype', 'HP:0001942', (302, 320)) ('leukocytosis', 'Disease', (34, 46)) ('thrombocytopenia', 'Disease', (119, 135)) ('proteinuria', 'Disease', (247, 258)) ('normocytic anemia', 'Phenotype', 'HP:0001897', (73, 90)) ('proteinuria', 'Disease', 'MESH:D011507', (247, 258)) ('hematuria', 'Disease', 'MESH:D006417', (287, 296)) ('deranged renal function', 'Phenotype', 'HP:0012211', (166, 189)) ('muL', 'Gene', (59, 62)) ('anemia', 'Phenotype', 'HP:0001903', (84, 90)) ('hematuria', 'Phenotype', 'HP:0000790', (287, 296)) ('thrombocytopenia', 'Disease', 'MESH:D013921', (119, 135)) ('thrombocytopenia', 'Phenotype', 'HP:0001873', (119, 135)) ('metabolic acidosis', 'Disease', (302, 320)) ('100 x 109/L', 'Var', (137, 148)) ('proteinuria', 'Phenotype', 'HP:0000093', (247, 258)) ('BUN', 'Var', (191, 194)) ('leukocytosis', 'Phenotype', 'HP:0001974', (34, 46)) ('metabolic acidosis', 'Disease', 'MESH:D000138', (302, 320)) ('deranged', 'Disease', (166, 174)) ('mild hematuria', 'Phenotype', 'HP:0002907', (282, 296)) ('muL', 'Gene', '4591', (59, 62)) ('acidosis', 'Phenotype', 'HP:0001941', (312, 320)) ('normocytic anemia', 'Disease', (73, 90)) ('normocytic anemia', 'Disease', 'MESH:D000740', (73, 90)) ('leukocytosis', 'Disease', 'MESH:D007964', (34, 46)) ('creatinine', 'Chemical', 'MESH:D003404', (214, 224)) ('hematuria', 'Disease', (287, 296)) ('renal function', 'MPA', (175, 189)) 84807 31929915 The subnormal haptoglobin coupled with elevated LDH and reticulocyte count, and schistocytes on peripheral smear favor MAHA. ('schistocytes', 'CPA', (80, 92)) ('MAHA', 'Disease', 'MESH:D000743', (119, 123)) ('MAHA', 'Disease', (119, 123)) ('subnormal', 'Var', (4, 13)) ('elevated', 'PosReg', (39, 47)) ('schistocytes', 'Phenotype', 'HP:0001981', (80, 92)) ('subnormal haptoglobin', 'Phenotype', 'HP:0020179', (4, 25)) ('haptoglobin', 'Gene', '3240', (14, 25)) ('elevated LDH and reticulocyte count', 'Phenotype', 'HP:0001923', (39, 74)) ('haptoglobin', 'Gene', (14, 25)) ('MAHA', 'Phenotype', 'HP:0001937', (119, 123)) 84974 31305440 Immunohistochemistry revealed CK(-), EMA(-), Vimentin(+), Inhibinalpha(-), CD34(-), S-100(-), CD56(+), CgA(+), SyN(+), and Ki-67 (<5%+) (Fig. ('Vimentin', 'Gene', (45, 53)) ('S-100', 'Var', (84, 89)) ('Ki-67', 'Var', (123, 128)) ('SyN', 'Gene', '23336', (111, 114)) ('SyN', 'Gene', (111, 114)) ('Vimentin', 'Gene', '7431', (45, 53)) ('CD56', 'Gene', '4684', (94, 98)) ('CD34', 'Gene', (75, 79)) ('CD34', 'Gene', '947', (75, 79)) ('CgA', 'Gene', '1113', (103, 106)) ('CD56', 'Gene', (94, 98)) ('CgA', 'Gene', (103, 106)) 85006 30959789 FGF21 was higher in PPGL than in controls (174.2 (283) pg/mL vs. 107.9 (116) pg/mL; p < 0.001) and comparable with obese (174.2 (283) pg/mL vs. 160.4 (180); p = NS). ('FGF21', 'Gene', (0, 5)) ('obese', 'Disease', (115, 120)) ('higher', 'PosReg', (10, 16)) ('PPGL', 'Var', (20, 24)) ('obese', 'Disease', 'MESH:D009765', (115, 120)) 85030 30959789 Higher values of resting energy expenditure/basal energy expenditure (REE/BEE) were present in PPGL and obese in comparison with controls. ('obese', 'Disease', (104, 109)) ('expenditure/basal energy expenditure', 'MPA', (32, 68)) ('Higher', 'PosReg', (0, 6)) ('PPGL', 'Var', (95, 99)) ('obese', 'Disease', 'MESH:D009765', (104, 109)) ('resting energy expenditure/basal', 'MPA', (17, 49)) 85032 30959789 PPGL and obese also showed higher systolic blood pressure (sBP) than controls (p = 0.002). ('higher systolic blood pressure', 'Phenotype', 'HP:0004421', (27, 57)) ('obese', 'Disease', (9, 14)) ('PPGL', 'Var', (0, 4)) ('higher', 'PosReg', (27, 33)) ('obese', 'Disease', 'MESH:D009765', (9, 14)) ('systolic blood pressure', 'MPA', (34, 57)) 85033 30959789 Fasting blood glucose (FBG) and glycated hemoglobin (HbA1c) levels in PPGL and obese were similar (p = NS), but higher than in controls (p < 0.001). ('PPGL', 'Var', (70, 74)) ('higher', 'PosReg', (112, 118)) ('obese', 'Disease', 'MESH:D009765', (79, 84)) ('obese', 'Disease', (79, 84)) ('glycated hemoglobin', 'Phenotype', 'HP:0040217', (32, 51)) ('glucose', 'Chemical', 'MESH:D005947', (14, 21)) 85052 30959789 Our study shows that patients with PPGL have higher serum levels of FGF21 compared to healthy controls and these levels do not differ from obese patients. ('patients', 'Species', '9606', (145, 153)) ('serum levels', 'MPA', (52, 64)) ('PPGL', 'Var', (35, 39)) ('higher serum levels of FGF21', 'Phenotype', 'HP:0030269', (45, 73)) ('obese', 'Disease', (139, 144)) ('FGF21', 'Protein', (68, 73)) ('patients', 'Species', '9606', (21, 29)) ('higher', 'PosReg', (45, 51)) ('obese', 'Disease', 'MESH:D009765', (139, 144)) 85059 30959789 Although there are elevated levels of FGF21 in patients with PPGL, we have not found a link to hypermetabolic state. ('levels', 'MPA', (28, 34)) ('FGF21', 'Gene', (38, 43)) ('elevated levels of FGF21', 'Phenotype', 'HP:0030269', (19, 43)) ('patients', 'Species', '9606', (47, 55)) ('elevated', 'PosReg', (19, 27)) ('PPGL', 'Var', (61, 65)) 85080 30959789 In our group with PPGL, basal insulin levels were significantly lower than in the obese and lean controls, and we did not find a relation to FGF21. ('obese', 'Disease', 'MESH:D009765', (82, 87)) ('insulin', 'Gene', (30, 37)) ('lower', 'NegReg', (64, 69)) ('insulin', 'Gene', '3630', (30, 37)) ('obese', 'Disease', (82, 87)) ('PPGL', 'Var', (18, 22)) 85083 30959789 In addition, catecholamines antagonize insulin action in target organs and thereby might trigger insulin resistance. ('insulin resistance', 'Phenotype', 'HP:0000855', (97, 115)) ('insulin', 'Gene', '3630', (97, 104)) ('insulin', 'Gene', (39, 46)) ('catecholamines', 'Var', (13, 27)) ('trigger', 'Reg', (89, 96)) ('insulin', 'Gene', '3630', (39, 46)) ('catecholamines', 'Chemical', 'MESH:D002395', (13, 27)) ('antagonize insulin action', 'Phenotype', 'HP:0000855', (28, 53)) ('antagonize', 'NegReg', (28, 38)) ('insulin', 'Gene', (97, 104)) 85093 30959789 87 subjects were included in the study (40 patients with PPGL, 26 healthy volunteers, and 21 obese individuals). ('obese', 'Disease', (93, 98)) ('PPGL', 'Var', (57, 61)) ('obese', 'Disease', 'MESH:D009765', (93, 98)) ('patients', 'Species', '9606', (43, 51)) 85094 30959789 Subjects with PPGL (38 pheochromocytoma and 2 abdominal paraganglioma) were examined during a short hospitalization in our department before and one year after tumor removal. ('pheochromocytoma', 'Disease', (23, 39)) ('tumor', 'Disease', 'MESH:D009369', (160, 165)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (46, 69)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (23, 39)) ('paraganglioma', 'Phenotype', 'HP:0002668', (56, 69)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (23, 39)) ('abdominal paraganglioma', 'Disease', (46, 69)) ('tumor', 'Disease', (160, 165)) ('PPGL', 'Var', (14, 18)) 85139 30959487 There is a hypothesis that the distribution of betaARs contributes to abnormal systolic wall motion in Takotsubo cardiomyopathy (TC), where hypokinetic apical wall with ballooning and hyperkinetic basal wall are observed. ('distribution', 'Var', (31, 43)) ('TC', 'Phenotype', 'HP:0011665', (129, 131)) ('betaAR', 'Gene', '154', (47, 53)) ('Takotsubo cardiomyopathy', 'Phenotype', 'HP:0011665', (103, 127)) ('Takotsubo cardiomyopathy', 'Disease', 'MESH:D054549', (103, 127)) ('ballooning', 'Disease', 'MESH:D054549', (169, 179)) ('hyperkinetic', 'Disease', 'MESH:D006948', (184, 196)) ('hypokinetic', 'Disease', 'MESH:C536231', (140, 151)) ('hypokinetic', 'Disease', (140, 151)) ('Takotsubo cardiomyopathy', 'Disease', (103, 127)) ('apical wall with ballooning', 'Phenotype', 'HP:0032176', (152, 179)) ('ballooning', 'Disease', (169, 179)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (113, 127)) ('abnormal systolic wall motion', 'MPA', (70, 99)) ('betaAR', 'Gene', (47, 53)) ('hyperkinetic', 'Disease', (184, 196)) 85187 30959487 Pathologically, catecholamines have been shown to cause myocardial injury, such as contraction band necrosis, via alpha-receptor-mediated vasoconstriction and oxygen-derived free radical injury, leading to myocyte membrane damage and death. ('cause', 'Reg', (50, 55)) ('myocardial injury', 'Disease', (56, 73)) ('catecholamines', 'Chemical', 'MESH:D002395', (16, 30)) ('myocyte membrane damage', 'CPA', (206, 229)) ('alpha-receptor-mediated vasoconstriction', 'MPA', (114, 154)) ('death', 'Disease', 'MESH:D003643', (234, 239)) ('death', 'Disease', (234, 239)) ('necrosis', 'Disease', 'MESH:D009336', (100, 108)) ('leading to', 'Reg', (195, 205)) ('oxygen', 'Chemical', 'MESH:D010100', (159, 165)) ('catecholamines', 'Var', (16, 30)) ('oxygen-derived free radical injury', 'MPA', (159, 193)) ('myocardial injury', 'Disease', 'MESH:D009202', (56, 73)) ('necrosis', 'Disease', (100, 108)) 85232 30813557 Notably, a maternal parent-of-origin effect, interpreted as evidence for "imprinting," is implicated in the transmission of SDHD, SDHAF2, and MAX mutations. ('mutations', 'Var', (146, 155)) ('SDHD', 'Gene', (124, 128)) ('SDHAF2', 'Gene', '54949', (130, 136)) ('SDHAF2', 'Gene', (130, 136)) ('SDHD', 'Gene', '6392', (124, 128)) 85233 30813557 Regardless of this effect, which may result in generation skipping, the penetrance of the mutations in the SDH genes that are most commonly associated with PPGL is surprisingly low; in fact, it has been reliably estimated at only 1.7% for SDHA, 22.0% for SDHB, and 8.3% for SDHC. ('SDH', 'Gene', (239, 242)) ('associated', 'Reg', (140, 150)) ('mutations', 'Var', (90, 99)) ('SDH', 'Gene', (107, 110)) ('SDHC', 'Gene', '6391', (274, 278)) ('SDH', 'Gene', '6390', (107, 110)) ('SDH', 'Gene', (255, 258)) ('SDHA', 'Gene', '6389', (239, 243)) ('SDHB', 'Gene', '6390', (255, 259)) ('SDH', 'Gene', '6390', (274, 277)) ('SDH', 'Gene', '6390', (239, 242)) ('SDHC', 'Gene', (274, 278)) ('SDHA', 'Gene', (239, 243)) ('low', 'NegReg', (177, 180)) ('SDH', 'Gene', '6390', (255, 258)) ('SDHB', 'Gene', (255, 259)) ('SDH', 'Gene', (274, 277)) 85234 30813557 Furthermore, mice mutated in sdhb, the human SDHB homolog, do not develop any type of cancer. ('mice', 'Species', '10090', (13, 17)) ('mutated', 'Var', (18, 25)) ('sdhb', 'Gene', (29, 33)) ('develop', 'Reg', (66, 73)) ('cancer', 'Phenotype', 'HP:0002664', (86, 92)) ('SDHB', 'Gene', '6390', (45, 49)) ('type of cancer', 'Disease', 'MESH:D009369', (78, 92)) ('SDHB', 'Gene', (45, 49)) ('human', 'Species', '9606', (39, 44)) ('sdhb', 'Gene', '67680', (29, 33)) ('type of cancer', 'Disease', (78, 92)) 85235 30813557 All this suggests that germline SDH mutations predispose to PPGL, but are not sufficient for tumorigenesis. ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('tumor', 'Disease', (93, 98)) ('predispose', 'Reg', (46, 56)) ('mutations', 'Var', (36, 45)) ('SDH', 'Gene', '6390', (32, 35)) ('SDH', 'Gene', (32, 35)) ('PPGL', 'Disease', (60, 64)) ('tumor', 'Disease', 'MESH:D009369', (93, 98)) 85254 30813557 The first and largest cluster, identified by pseudohypoxic signaling, is related to loss-of-function mutations that stabilize HIFA, either indirectly, via metabolic inhibition of the alpha-ketoglutarate-dependent dioxygenases, as in the case of mutations in the Krebs cycle genes encoding the SDH enzyme subunits (SDHA/B/C/D), the SDH assembly factor (SDHAF2), fumarate hydratase (FH) and malate dehydrogenase 2 (MDH2); or directly, via disruption of HIFA proteasomal targeting, as in the case of VHL and of the genes encoding the prolyl hydroxylases 1 and 2 (EGLN1/2). ('loss-of-function', 'NegReg', (84, 100)) ('VHL', 'Disease', (497, 500)) ('SDHA', 'Gene', '6389', (314, 318)) ('FH', 'Gene', '2271', (381, 383)) ('malate dehydrogenase 2', 'Gene', '4191', (389, 411)) ('SDHAF2', 'Gene', (352, 358)) ('MDH2', 'Gene', '4191', (413, 417)) ('SDHAF2', 'Gene', '54949', (352, 358)) ('SDH', 'Gene', (352, 355)) ('SDH', 'Gene', (314, 317)) ('fumarate hydratase', 'Gene', (361, 379)) ('SDHA', 'Gene', (352, 356)) ('SDH', 'Gene', '6390', (293, 296)) ('mutations', 'Var', (245, 254)) ('SDHA', 'Gene', '6389', (352, 356)) ('EGLN1/2', 'Gene', '54583;112398', (560, 567)) ('VHL', 'Disease', 'MESH:D006623', (497, 500)) ('mutations', 'Var', (101, 110)) ('SDH', 'Gene', '6390', (331, 334)) ('disruption', 'NegReg', (437, 447)) ('fumarate hydratase', 'Gene', '2271', (361, 379)) ('MDH2', 'Gene', (413, 417)) ('SDH', 'Gene', (293, 296)) ('malate dehydrogenase 2', 'Gene', (389, 411)) ('SDH', 'Gene', '6390', (352, 355)) ('SDH', 'Gene', '6390', (314, 317)) ('SDHA', 'Gene', (314, 318)) ('oxygen', 'Chemical', 'MESH:D010100', (215, 221)) ('SDH', 'Gene', (331, 334)) ('EGLN1/2', 'Gene', (560, 567)) 85255 30813557 Additionally, gain-of-function mutations in EPAS1, encoding HIF2A, contribute to this cluster. ('EPAS1', 'Gene', '2034', (44, 49)) ('mutations', 'Var', (31, 40)) ('EPAS1', 'Gene', (44, 49)) ('HIF2A', 'Gene', (60, 65)) ('gain-of-function', 'PosReg', (14, 30)) ('HIF2A', 'Gene', '2034', (60, 65)) 85256 30813557 Functionally, the pseudohypoxic cluster is characterized by steady HIFA signaling, even under normoxia, and by a cascade of downstream effects, including a metabolic shift towards glycolysis, impaired oxidative phosphorylation, production of reactive oxygen species, DNA and histone hypermethylation, inhibition of collagen maturation and activation of the EMT, which is the widely recognized driver of the migratory mesenchymal-like cell phenotype and of vasculoangiogenesis. ('reactive oxygen species', 'Chemical', 'MESH:D017382', (242, 265)) ('oxidative phosphorylation', 'MPA', (201, 226)) ('metabolic', 'MPA', (156, 165)) ('inhibition', 'NegReg', (301, 311)) ('impaired', 'NegReg', (192, 200)) ('activation', 'PosReg', (339, 349)) ('collagen maturation', 'CPA', (315, 334)) ('hypermethylation', 'Var', (283, 299)) ('EMT', 'CPA', (357, 360)) ('glycolysis', 'MPA', (180, 190)) 85258 30813557 Tumors in this cluster are mainly pheochromocytomas and have mutations in various genes involved in protein kinase signaling networks, including NF1, KIF1B, MAX, RET, TMEM127, H-RAS, ATRX, and, more rarely, K-RAS and FGFR. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('TMEM127', 'Gene', (167, 174)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (34, 51)) ('RET', 'Gene', (162, 165)) ('Tumors', 'Disease', (0, 6)) ('TMEM127', 'Gene', '55654', (167, 174)) ('mainly pheochromocytomas', 'Phenotype', 'HP:0002666', (27, 51)) ('K-RAS', 'Gene', (207, 212)) ('KIF1B', 'Gene', (150, 155)) ('NF1', 'Gene', '4763', (145, 148)) ('H-RAS', 'Gene', (176, 181)) ('mutations', 'Var', (61, 70)) ('ATRX', 'Gene', (183, 187)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('K-RAS', 'Gene', '3845', (207, 212)) ('ATRX', 'Gene', '546', (183, 187)) ('H-RAS', 'Gene', '3265', (176, 181)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (34, 50)) ('NF1', 'Gene', (145, 148)) ('pheochromocytomas', 'Disease', (34, 51)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (34, 51)) ('RET', 'Gene', '5979', (162, 165)) ('KIF1B', 'Gene', '23095', (150, 155)) 85260 30813557 Clinically, the PPGLs in this cluster do not display a particularly aggressive behavior, except those associated with ATRX mutations. ('ATRX', 'Gene', '546', (118, 122)) ('aggressive behavior', 'CPA', (68, 87)) ('PGLs', 'Phenotype', 'HP:0002668', (17, 21)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (68, 87)) ('mutations', 'Var', (123, 132)) ('ATRX', 'Gene', (118, 122)) 85261 30813557 Finally, the third cluster, also mainly adrenal, designated the Wnt signaling cluster, is associated with mutations in the cold shock domain containing E1 (CSDE1) gene and with fusion genes involving the mastermind-like transcriptional coactivator 3 (MAML3). ('mastermind-like transcriptional coactivator 3', 'Gene', (204, 249)) ('MAML3', 'Gene', '55534', (251, 256)) ('shock', 'Phenotype', 'HP:0031273', (128, 133)) ('MAML3', 'Gene', (251, 256)) ('mastermind-like transcriptional coactivator 3', 'Gene', '55534', (204, 249)) ('associated', 'Reg', (90, 100)) ('CSDE1', 'Gene', (156, 161)) ('mutations', 'Var', (106, 115)) ('CSDE1', 'Gene', '7812', (156, 161)) 85262 30813557 Indeed, the relative uniformity of the organoid tissue organization of PPGLs suggests that different mutational backgrounds and molecular phenotypes converge on encouraging the aberrant activation of a single, pre-determined morphogenetic program that most likely retraces the developmental footsteps of paragangliar hyperplasia, as in the physiological model of the carotid body. ('activation', 'PosReg', (186, 196)) ('PPGLs', 'Gene', (71, 76)) ('mutational', 'Var', (101, 111)) ('paragangliar hyperplasia', 'Disease', (304, 328)) ('paragangliar hyperplasia', 'Disease', 'MESH:D006965', (304, 328)) ('PGLs', 'Phenotype', 'HP:0002668', (72, 76)) 85267 30813557 This was in agreement with flow cytometry, which highlighted within freshly-dissociated HNPGLs cell populations positive for stem-like mesenchymal cell markers (e.g., CD44/HCAM, CD73, CD90, CD105, and CD133). ('CD44', 'Gene', '960', (167, 171)) ('CD73', 'Gene', '4907', (178, 182)) ('CD90', 'Gene', '7070', (184, 188)) ('CD105', 'Var', (190, 195)) ('CD133', 'Gene', (201, 206)) ('CD73', 'Gene', (178, 182)) ('CD44', 'Gene', (167, 171)) ('CD90', 'Gene', (184, 188)) ('CD133', 'Gene', '8842', (201, 206)) ('PGLs', 'Phenotype', 'HP:0002668', (90, 94)) 85273 30813557 This lineage-related pattern of mitochondrial alterations was found in all the HNPGLs analyzed, both mutated and unmutated in the SDH genes. ('mitochondrial alterations', 'Phenotype', 'HP:0012103', (32, 57)) ('SDH', 'Gene', (130, 133)) ('PGLs', 'Phenotype', 'HP:0002668', (81, 85)) ('mutated', 'Var', (101, 108)) ('mitochondrial', 'MPA', (32, 45)) ('SDH', 'Gene', '6390', (130, 133)) 85274 30813557 However, larger mitochondria were significantly associated with the HNPGLs from SDHB/C/D gene mutation carriers. ('larger', 'PosReg', (9, 15)) ('SDHB', 'Gene', (80, 84)) ('associated', 'Reg', (48, 58)) ('mutation', 'Var', (94, 102)) ('PGLs', 'Phenotype', 'HP:0002668', (70, 74)) ('HNPGLs', 'Disease', (68, 74)) ('mitochondria', 'MPA', (16, 28)) ('SDHB', 'Gene', '6390', (80, 84)) 85276 30813557 We confirmed with orthogonal assays some of the most frequently amplified hits, including IDUA (4p16.3), NOTCH1 (9q34.3), JAG2 (14q32), HES5 (1p36.32), DVL1 (1p36), and CTBP1 (4p16). ('IDUA', 'Gene', '3425', (90, 94)) ('NOTCH1', 'Gene', '4851', (105, 111)) ('NOTCH1', 'Gene', (105, 111)) ('1p36.32', 'Var', (142, 149)) ('JAG2', 'Gene', (122, 126)) ('HES5', 'Gene', '388585', (136, 140)) ('CTBP1', 'Gene', '1487', (169, 174)) ('DVL1', 'Gene', '1855', (152, 156)) ('14q32', 'Var', (128, 133)) ('HES5', 'Gene', (136, 140)) ('JAG2', 'Gene', '3714', (122, 126)) ('CTBP1', 'Gene', (169, 174)) ('DVL1', 'Gene', (152, 156)) ('IDUA', 'Gene', (90, 94)) 85277 30813557 Interestingly, IDUA, whose loss-of-function mutations are linked to type 1 mucopolysaccharidosis, a lysosomal storage disease (LSD), showed the highest concordance for CN gains (p = 0.000002 by Fisher's exact test). ('type 1 mucopolysaccharidosis', 'Disease', 'MESH:D008059', (68, 96)) ('IDUA', 'Gene', (15, 19)) ('loss-of-function', 'NegReg', (27, 43)) ('IDUA', 'Gene', '3425', (15, 19)) ('lysosomal storage disease', 'Disease', (100, 125)) ('type 1 mucopolysaccharidosis', 'Disease', (68, 96)) ('mutations', 'Var', (44, 53)) ('lysosomal storage disease', 'Disease', 'MESH:D016464', (100, 125)) ('CN gains', 'MPA', (168, 176)) 85282 30813557 In fact, in carriers of loss-of-function IDUA mutations, mitochondrial clearance is compromised, leading to the intraneuronal accumulation of pathological mitochondria, characterized by low DeltaPsim and swelling, loss of cristae, and vacuolation. ('low', 'NegReg', (186, 189)) ('loss-of-function', 'Var', (24, 40)) ('DeltaPsim', 'MPA', (190, 199)) ('IDUA', 'Gene', (41, 45)) ('loss', 'NegReg', (214, 218)) ('IDUA', 'Gene', '3425', (41, 45)) ('swelling', 'CPA', (204, 212)) ('mitochondrial clearance', 'CPA', (57, 80)) 85288 30813557 In the mitochondria NICD1 inhibits BAX and deregulates complex I, an effect that could contribute to explain the deregulation of complex I activity reported in the SDH-mutated PGLs. ('inhibits', 'NegReg', (26, 34)) ('complex I', 'Enzyme', (55, 64)) ('SDH', 'Gene', (164, 167)) ('NICD1', 'Var', (20, 25)) ('BAX', 'Gene', (35, 38)) ('deregulates', 'NegReg', (43, 54)) ('BAX', 'Gene', '581', (35, 38)) ('activity', 'MPA', (139, 147)) ('PGLs', 'Phenotype', 'HP:0002668', (176, 180)) ('SDH', 'Gene', '6390', (164, 167)) 85289 30813557 Importantly, NOTCH and HIFA signaling are linked in a positive loop: hypoxia promotes NOTCH activation, and NOTCH signaling upregulates HIF2A, the driver of the pseudo-hypoxic phenotype. ('upregulates', 'PosReg', (124, 135)) ('activation', 'PosReg', (92, 102)) ('hypoxia', 'Disease', 'MESH:D000860', (69, 76)) ('HIF2A', 'Gene', (136, 141)) ('NOTCH', 'Var', (108, 113)) ('hypoxia', 'Disease', (69, 76)) ('NOTCH', 'MPA', (86, 91)) ('HIF2A', 'Gene', '2034', (136, 141)) 85298 30813557 Such characteristics were common to cultures from PGLs with and without constitutional SDH gene mutations. ('SDH', 'Gene', (87, 90)) ('PGLs', 'Phenotype', 'HP:0002668', (50, 54)) ('SDH', 'Gene', '6390', (87, 90)) ('mutations', 'Var', (96, 105)) 85311 30813557 In conclusion, the loss of miR-200 and miR-34 family members influences the molecular and cellular HNPGL microenvironment by promoting the upregulation of key EMT- and mesenchymal-related genes. ('miR', 'Gene', '220972', (39, 42)) ('miR', 'Gene', (39, 42)) ('miR-34', 'Gene', (39, 45)) ('promoting', 'PosReg', (125, 134)) ('upregulation', 'PosReg', (139, 151)) ('miR', 'Gene', '220972', (27, 30)) ('miR', 'Gene', (27, 30)) ('miR-34', 'Gene', '407040', (39, 45)) ('loss', 'Var', (19, 23)) ('influences', 'Reg', (61, 71)) 85338 30813557 Furthermore, the 2 CDXs found in the treated mice contained only disorganized or apoptotic cells with diffuse evidence of autophagic vacuoles, suggesting that imbalanced autophagic flux contributed to imatinib-induced growth arrest and apoptosis, as previously demonstrated by other authors in several mammalian cell types. ('mice', 'Species', '10090', (45, 49)) ('autophagic flux', 'CPA', (170, 185)) ('growth arrest', 'Disease', 'MESH:D006323', (218, 231)) ('mammalian', 'Species', '9606', (302, 311)) ('growth arrest', 'Disease', (218, 231)) ('apoptosis', 'CPA', (236, 245)) ('imatinib', 'Chemical', 'MESH:D000068877', (201, 209)) ('autophagic vacuoles', 'Phenotype', 'HP:0003736', (122, 141)) ('imbalanced', 'Var', (159, 169)) ('imatinib-induced', 'MPA', (201, 217)) ('CDXs', 'Chemical', '-', (19, 23)) ('growth arrest', 'Phenotype', 'HP:0001510', (218, 231)) 85358 30813557 In this perspective, PGL cells would be constrained into a pre-defined role conforming to "classic" two-hit or multiple-hit, gene-centered paradigms, where random genetic and epigenetic changes, driven by "selective pressures," result in the emergence of heterogeneous and uncoordinated clonal tumor subpopulations. ('tumor', 'Disease', (294, 299)) ('tumor', 'Disease', 'MESH:D009369', (294, 299)) ('epigenetic changes', 'Var', (175, 193)) ('tumor', 'Phenotype', 'HP:0002664', (294, 299)) 85371 30854332 All 7 out of 7 patients who received conventional therapies (chemotherapy, somatostatin analog therapy, radiation therapy, 131I-MIBG, peptide receptor radionuclide therapy) in addition to surgery showed disease progression. ('131I-MIBG', 'Var', (123, 132)) ('patients', 'Species', '9606', (15, 23)) ('disease progression', 'CPA', (203, 222)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (123, 132)) 85379 30854332 Subsequent studies linked mutations in this gene to abdominal PGL, pituitary adenoma, gastrointestinal stromal tumors (GIST), neuroblastoma, and renal cell carcinoma (RCC). ('tumor', 'Phenotype', 'HP:0002664', (111, 116)) ('mutations', 'Var', (26, 35)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (145, 165)) ('linked', 'Reg', (19, 25)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (86, 117)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (86, 117)) ('neuroblastoma', 'Disease', (126, 139)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (126, 139)) ('carcinoma', 'Phenotype', 'HP:0030731', (156, 165)) ('renal cell carcinoma', 'Disease', (145, 165)) ('abdominal PGL', 'Disease', (52, 65)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (145, 165)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (67, 84)) ('neuroblastoma', 'Disease', 'MESH:D009447', (126, 139)) ('RCC', 'Disease', (167, 170)) ('RCC', 'Phenotype', 'HP:0005584', (167, 170)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (67, 84)) ('gastrointestinal stromal tumors', 'Disease', (86, 117)) ('GIST', 'Phenotype', 'HP:0100723', (119, 123)) ('pituitary adenoma', 'Disease', (67, 84)) ('tumors', 'Phenotype', 'HP:0002664', (111, 117)) ('RCC', 'Disease', 'MESH:C538614', (167, 170)) 85389 30854332 At their initial evaluation at the NIH, all 10 patients were found to have metastatic disease and 6 out of 10 patients had prior documentation of SDHA mutation. ('metastatic disease', 'CPA', (75, 93)) ('patients', 'Species', '9606', (110, 118)) ('patients', 'Species', '9606', (47, 55)) ('mutation', 'Var', (151, 159)) ('SDHA', 'Gene', (146, 150)) ('SDHA', 'Gene', '6389', (146, 150)) 85417 30854332 Chemotherapy with cyclophosphamide, vincristine, and dacarbazine (CVD) was started and resulted in a mixed response with a decrease in the size and activity of the abdominal lymph node lesions, stability in the size of the thoracic lymph node and lung lesions, and both stability and increase in the number and size of bone lesions as demonstrated by CT, MRI, and 18F-FDG PET/CT scans. ('dacarbazine', 'Chemical', 'MESH:D003606', (53, 64)) ('lung lesions', 'Disease', (247, 259)) ('cyclophosphamide', 'Chemical', 'MESH:D003520', (18, 34)) ('decrease', 'NegReg', (123, 131)) ('CVD', 'Chemical', '-', (66, 69)) ('bone lesion', 'Disease', 'MESH:D001847', (319, 330)) ('lung lesions', 'Disease', 'MESH:D008171', (247, 259)) ('cyclophosphamide', 'Var', (18, 34)) ('abdominal lymph node lesions', 'CPA', (164, 192)) ('activity', 'MPA', (148, 156)) ('increase', 'PosReg', (284, 292)) ('18F-FDG', 'Chemical', 'MESH:D019788', (364, 371)) ('bone lesion', 'Disease', (319, 330)) ('vincristine', 'Chemical', 'MESH:D014750', (36, 47)) 85470 30854332 Three months after 131I-MIBG therapy, he underwent shave biopsy of new skin lesions in left lower shin and right-hand dorsum, which were found to be well-differentiated squamous cell carcinoma. ('131I-MIBG', 'Var', (19, 28)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (169, 192)) ('carcinoma', 'Phenotype', 'HP:0030731', (183, 192)) ('squamous cell carcinoma', 'Disease', 'MESH:D002294', (169, 192)) ('squamous cell carcinoma', 'Disease', (169, 192)) ('skin lesions', 'Disease', 'MESH:D012871', (71, 83)) ('skin lesions', 'Disease', (71, 83)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (19, 28)) 85504 30854332 He developed new onset dysphagia and further imaging work up revealed a lesion anterior to C5-T1, which appeared to be displacing the esophagus along with a heterogenous 7.7 cm retroperitoneal tumor in the right peri-adrenal region which was biopsied and revealed PGL on histopathology. ('dysphagia', 'Disease', 'MESH:D003680', (23, 32)) ('lesion', 'Var', (72, 78)) ('dysphagia', 'Disease', (23, 32)) ('tumor', 'Phenotype', 'HP:0002664', (193, 198)) ('dysphagia', 'Phenotype', 'HP:0002015', (23, 32)) ('retroperitoneal tumor', 'Disease', 'MESH:D012186', (177, 198)) ('displacing', 'NegReg', (119, 129)) ('retroperitoneal tumor', 'Disease', (177, 198)) 85527 30854332 The most predominant gene locus for the SDHA mutation was noted to be c.91C>T (p.Arg31*) in seven out of 10 patients. ('SDHA', 'Gene', '6389', (40, 44)) ('c.91C>T', 'Mutation', 'rs142441643', (70, 77)) ('c.91C>T (p.Arg31*', 'Var', (70, 87)) ('p.Arg31*', 'Mutation', 'rs142441643', (79, 87)) ('SDHA', 'Gene', (40, 44)) ('patients', 'Species', '9606', (108, 116)) 85535 30854332 First degree relatives of only 6 patients were tested and all of them were found to carry an SDHA mutation (n = 6/6). ('SDHA', 'Gene', (93, 97)) ('SDHA', 'Gene', '6389', (93, 97)) ('patients', 'Species', '9606', (33, 41)) ('mutation', 'Var', (98, 106)) 85575 30854332 SDHx mutations present with other tumors that are now considered to be a part of their characteristic syndromic presentation including SDHx-related PGL-RCC, Carney-Stratakis syndrome, Carney triad and PGL-pituitary adenoma. ('SDHx', 'Chemical', '-', (135, 139)) ('tumors', 'Disease', (34, 40)) ('tumors', 'Disease', 'MESH:D009369', (34, 40)) ('tumors', 'Phenotype', 'HP:0002664', (34, 40)) ('RCC', 'Phenotype', 'HP:0005584', (152, 155)) ('PGL-pituitary adenoma', 'Disease', 'MESH:D010235', (201, 222)) ('SDHx-related', 'Gene', (135, 147)) ('mutations', 'Var', (5, 14)) ('PGL-RCC, Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (148, 182)) ('SDHx', 'Chemical', '-', (0, 4)) ('SDHx', 'Gene', (0, 4)) ('Carney triad', 'Disease', (184, 196)) ('present', 'Reg', (15, 22)) ('PGL-pituitary adenoma', 'Disease', (201, 222)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (205, 222)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) 85576 30854332 As mentioned, an SDHA mutation has been associated with other disease entities. ('SDHA', 'Gene', (17, 21)) ('mutation', 'Var', (22, 30)) ('associated', 'Reg', (40, 50)) ('SDHA', 'Gene', '6389', (17, 21)) 85578 30854332 Likewise, in one of our patients, GIST and RCC were not related to SDHA mutations based on IHC. ('mutations', 'Var', (72, 81)) ('RCC', 'Phenotype', 'HP:0005584', (43, 46)) ('SDHA', 'Gene', '6389', (67, 71)) ('GIST', 'Phenotype', 'HP:0100723', (34, 38)) ('RCC', 'Disease', 'MESH:C538614', (43, 46)) ('RCC', 'Disease', (43, 46)) ('patients', 'Species', '9606', (24, 32)) ('SDHA', 'Gene', (67, 71)) 85579 30854332 By contrast, in one study, 1 patient with germline SDHA mutation was found to be associated with GIST complicated by RCC, whereas in another study, germline SDHA mutation was found to be associated with GIST in 2 patients and neuroblastoma in 1 patient. ('RCC', 'Disease', (117, 120)) ('RCC', 'Phenotype', 'HP:0005584', (117, 120)) ('patients', 'Species', '9606', (213, 221)) ('RCC', 'Disease', 'MESH:C538614', (117, 120)) ('patient', 'Species', '9606', (213, 220)) ('GIST', 'Disease', (203, 207)) ('GIST', 'Phenotype', 'HP:0100723', (203, 207)) ('patient', 'Species', '9606', (245, 252)) ('SDHA', 'Gene', (157, 161)) ('neuroblastoma', 'Disease', (226, 239)) ('associated', 'Reg', (187, 197)) ('SDHA', 'Gene', '6389', (157, 161)) ('mutation', 'Var', (56, 64)) ('GIST', 'Phenotype', 'HP:0100723', (97, 101)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (226, 239)) ('patient', 'Species', '9606', (29, 36)) ('SDHA', 'Gene', (51, 55)) ('neuroblastoma', 'Disease', 'MESH:D009447', (226, 239)) ('SDHA', 'Gene', '6389', (51, 55)) ('associated', 'Reg', (81, 91)) ('GIST complicated', 'Disease', (97, 113)) 85581 30854332 Due to a limitation of samples of other tumors, we do not know whether they could be associated with an SDHA mutation, and this warrants further investigation in the future. ('D', 'Chemical', 'MESH:D003903', (0, 1)) ('tumors', 'Phenotype', 'HP:0002664', (40, 46)) ('SDHA', 'Gene', (104, 108)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('associated', 'Reg', (85, 95)) ('D', 'Chemical', 'MESH:D003903', (105, 106)) ('tumors', 'Disease', (40, 46)) ('SDHA', 'Gene', '6389', (104, 108)) ('tumors', 'Disease', 'MESH:D009369', (40, 46)) ('mutation', 'Var', (109, 117)) 85582 30854332 Pathogenic germline non-sense mutations were found in more than half, with c.91C>T (p.Arg31*) as the most frequent gene locus. ('c.91C>T', 'Mutation', 'rs142441643', (75, 82)) ('Pathogenic', 'Reg', (0, 10)) ('p.Arg31*', 'Mutation', 'rs142441643', (84, 92)) ('c.91C>T (p.Arg31*', 'Var', (75, 92)) 85583 30854332 A similar finding has been reported in a nation-wide Dutch study, as well as in a report evaluating the pathogenicity and penetrance of SDHA variants reported in literature-based PHEO/PGL cases. ('D', 'Chemical', 'MESH:D003903', (137, 138)) ('SDHA', 'Gene', '6389', (136, 140)) ('variants', 'Var', (141, 149)) ('D', 'Chemical', 'MESH:D003903', (53, 54)) ('PHEO', 'Chemical', '-', (179, 183)) ('SDHA', 'Gene', (136, 140)) 85588 30854332 In another study, any-tumor penetrance at 40 years old among SDHA mutation carriers was 13%. ('SDHA', 'Gene', (61, 65)) ('tumor', 'Disease', 'MESH:D009369', (22, 27)) ('tumor', 'Phenotype', 'HP:0002664', (22, 27)) ('SDHA', 'Gene', '6389', (61, 65)) ('tumor', 'Disease', (22, 27)) ('mutation', 'Var', (66, 74)) 85589 30854332 The apparent low SDHA penetrance could be explained by the low frequency of loss of 5p15, which is the chromosomal region containing the SDHA locus unlike that of SDHB and SDHD loci. ('SDHA', 'Gene', (17, 21)) ('SDHB', 'Gene', '6390', (163, 167)) ('SDHB', 'Gene', (163, 167)) ('loss', 'Var', (76, 80)) ('SDHA', 'Gene', '6389', (137, 141)) ('SDHA', 'Gene', '6389', (17, 21)) ('SDHD', 'Gene', '6392', (172, 176)) ('5p15', 'Gene', (84, 88)) ('SDHA', 'Gene', (137, 141)) ('SDHD', 'Gene', (172, 176)) 85613 30854332 ONC201 is a dopamine receptor inhibitor, DRD2, and is being evaluated as phase 2 clinical trial in neuroendocrine tumors including PHEO/PGLs [ClinicalTrials.gov Identifier: NCT03034200]. ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (99, 120)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (99, 120)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('DRD2', 'Gene', (41, 45)) ('PHEO', 'Chemical', '-', (131, 135)) ('ONC201', 'Var', (0, 6)) ('neuroendocrine tumors', 'Disease', (99, 120)) ('dopamine', 'Chemical', 'MESH:D004298', (12, 20)) ('DRD2', 'Gene', '1813', (41, 45)) ('tumors', 'Phenotype', 'HP:0002664', (114, 120)) ('PHEO/PGLs', 'Disease', (131, 140)) 85626 30854332 These similarities between SDHA-related metastatic PHEOs/PGLs and SDHB-related metastatic PHEOs/PGLs may be due to the fact that SDHA gene mutations may affect SDHB function. ('SDHB', 'Gene', (66, 70)) ('SDHB', 'Gene', '6390', (160, 164)) ('SDHA', 'Gene', (27, 31)) ('SDHB', 'Gene', (160, 164)) ('mutations', 'Var', (139, 148)) ('SDHA', 'Gene', '6389', (129, 133)) ('affect', 'Reg', (153, 159)) ('function', 'MPA', (165, 173)) ('PHEOs', 'Chemical', '-', (51, 56)) ('SDHB', 'Gene', '6390', (66, 70)) ('PHEOs', 'Chemical', '-', (90, 95)) ('SDHA', 'Gene', '6389', (27, 31)) ('SDHA', 'Gene', (129, 133)) 85627 30854332 In fact, it has been reported that when there is a defect in the SDHA gene, a defect in SDHB protein follows; patients with SDHA gene mutations lose both SDH subunits, namely SDHA and SDHB. ('SDH', 'Gene', '6390', (65, 68)) ('SDH', 'Gene', (154, 157)) ('SDHA', 'Gene', (65, 69)) ('SDHB', 'Gene', (184, 188)) ('SDHB', 'Gene', (88, 92)) ('SDH', 'Gene', '6390', (184, 187)) ('SDH', 'Gene', '6390', (88, 91)) ('SDH', 'Gene', '6390', (175, 178)) ('SDHA', 'Gene', '6389', (65, 69)) ('SDHA', 'Gene', (175, 179)) ('SDH', 'Gene', (65, 68)) ('SDHA', 'Gene', '6389', (175, 179)) ('lose', 'NegReg', (144, 148)) ('mutations', 'Var', (134, 143)) ('SDH', 'Gene', (184, 187)) ('SDH', 'Gene', (88, 91)) ('defect', 'Var', (51, 57)) ('SDH', 'Gene', (175, 178)) ('SDH', 'Gene', '6390', (124, 127)) ('SDHA', 'Gene', (124, 128)) ('SDH', 'Gene', '6390', (154, 157)) ('SDHA', 'Gene', '6389', (124, 128)) ('SDHB', 'Gene', '6390', (184, 188)) ('SDHB', 'Gene', '6390', (88, 92)) ('SDH', 'Gene', (124, 127)) ('patients', 'Species', '9606', (110, 118)) 85629 30854332 Nevertheless, by some additional defense and other mechanisms (additional mutations, epigenetic changes), some cells indeed can transform into cancer cells and give rise to a neoplastic condition, in this case, PHEO/PGL. ('transform', 'Reg', (128, 137)) ('cancer', 'Phenotype', 'HP:0002664', (143, 149)) ('epigenetic changes', 'Var', (85, 103)) ('mutations', 'Var', (74, 83)) ('PHEO', 'Chemical', '-', (211, 215)) ('neoplastic condition', 'Phenotype', 'HP:0002664', (175, 195)) ('PHEO/PGL', 'Disease', (211, 219)) ('cancer', 'Disease', (143, 149)) ('cancer', 'Disease', 'MESH:D009369', (143, 149)) ('give rise to', 'Reg', (160, 172)) 85632 30854332 Few studies have analyzed genotype-phenotype relationships which are necessary for the clinician to make evidence-based decisions in terms of disease diagnosis and surveillance in regard to SDHx gene mutations. ('SDHx', 'Gene', (190, 194)) ('SDHx', 'Chemical', '-', (190, 194)) ('mutations', 'Var', (200, 209)) 85697 30582088 The use of 123I MIBG, a guanethidine analogue that is structurally similar to norepinephrine and absorbed by adrenergic blood vessels, is recommended as a functional imaging technique. ('123I MIBG', 'Chemical', '-', (11, 20)) ('guanethidine', 'Chemical', 'MESH:D006145', (24, 36)) ('norepinephrine', 'Chemical', 'MESH:D009638', (78, 92)) ('MIBG', 'Gene', (16, 20)) ('123I', 'Var', (11, 15)) 85702 30582088 At least one-third of patients with cardiac paragangliomas have germline (inherited) mutations, and 50% of these develop the disease. ('cardiac paragangliomas', 'Disease', 'MESH:D010235', (36, 58)) ('develop', 'Reg', (113, 120)) ('paragangliomas', 'Phenotype', 'HP:0002668', (44, 58)) ('paraganglioma', 'Phenotype', 'HP:0002668', (44, 57)) ('patients', 'Species', '9606', (22, 30)) ('cardiac paragangliomas', 'Disease', (36, 58)) ('germline', 'Var', (64, 72)) 85703 30582088 Genetic studies should be considered in all patients diagnosed with paragangliomas and should include tests for the detection of succinate dehydrogenase mutations, and in the presence of metastasis, tests for the detection of succinate dehydrogenase subunit B mutation, which was the one we found in our patient. ('patient', 'Species', '9606', (44, 51)) ('patient', 'Species', '9606', (304, 311)) ('patients', 'Species', '9606', (44, 52)) ('paraganglioma', 'Phenotype', 'HP:0002668', (68, 81)) ('mutations', 'Var', (153, 162)) ('paragangliomas', 'Phenotype', 'HP:0002668', (68, 82)) ('paragangliomas', 'Disease', (68, 82)) ('succinate', 'Gene', (129, 138)) ('paragangliomas', 'Disease', 'MESH:D010235', (68, 82)) 85704 30582088 Mutations in the gene encoding the B subunit of succinate dehydrogenase have been linked to the presence of pheochromocytoma and metastatic disease in 40% of patients. ('pheochromocytoma', 'Disease', 'MESH:D010673', (108, 124)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (108, 124)) ('metastatic disease', 'Disease', (129, 147)) ('Mutations', 'Var', (0, 9)) ('patients', 'Species', '9606', (158, 166)) ('linked', 'Reg', (82, 88)) ('pheochromocytoma', 'Disease', (108, 124)) 85711 30582088 However, when this option is not possible and the mass extends to the atrioventricular groove of the left ventricle, or has direct involvement with the coronary arteries, resection with an adequate margin leads to high mortality and morbidity, resulting in fatal hemorrhage and myocardial infarction. ('atrioventricular', 'Disease', (70, 86)) ('atrioventricular groove', 'Phenotype', 'HP:0001674', (70, 93)) ('myocardial infarction', 'Disease', (278, 299)) ('myocardial infarction', 'Disease', 'MESH:D009203', (278, 299)) ('atrioventricular', 'Disease', 'MESH:D054537', (70, 86)) ('hemorrhage', 'Disease', (263, 273)) ('hemorrhage', 'Disease', 'MESH:D006470', (263, 273)) ('resection', 'Var', (171, 180)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (278, 299)) ('morbidity', 'CPA', (233, 242)) 85721 29282558 Here, we report the case of synchronous bilateral pheochromocytomas and paraganglioma with novel MYC associated factor X (MAX) gene mutation. ('MYC associated factor X', 'Gene', (97, 120)) ('MAX', 'Gene', '4149', (122, 125)) ('MAX', 'Gene', (122, 125)) ('paraganglioma', 'Disease', 'MESH:D010235', (72, 85)) ('MYC associated factor X', 'Gene', '4149', (97, 120)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (50, 67)) ('synchronous bilateral pheochromocytomas', 'Disease', 'MESH:D009378', (28, 67)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (50, 66)) ('paraganglioma', 'Phenotype', 'HP:0002668', (72, 85)) ('paraganglioma', 'Disease', (72, 85)) ('synchronous bilateral pheochromocytomas', 'Disease', (28, 67)) ('mutation', 'Var', (132, 140)) 85727 29282558 Her genetic testing indicated the novel germline mutation in MAX gene (c.70_73 del AAAC/p.Lys24fs*40). ('MAX', 'Gene', '4149', (61, 64)) ('p.Lys24fs*40', 'Mutation', 'p.K24fsX40', (88, 100)) ('c.70_73 del AAAC/p.Lys24fs*40', 'Var', (71, 100)) ('c.70_73 del AAAC', 'Mutation', 'c.70_73delAAAC', (71, 87)) ('MAX', 'Gene', (61, 64)) 85728 29282558 MAX germline mutation is recently identified as a rare cause of hereditary PPGL. ('MAX', 'Gene', '4149', (0, 3)) ('MAX', 'Gene', (0, 3)) ('germline mutation', 'Var', (4, 21)) ('PPGL', 'Disease', (75, 79)) 85729 29282558 The deletion mutation in MAX gene in this patient has never reported before. ('patient', 'Species', '9606', (42, 49)) ('MAX', 'Gene', '4149', (25, 28)) ('MAX', 'Gene', (25, 28)) ('deletion mutation', 'Var', (4, 21)) 85731 29282558 Due to the possibility for other types of malignant tumors, close follow-up is essential for MAX mutation carriers. ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('tumors', 'Phenotype', 'HP:0002664', (52, 58)) ('MAX', 'Gene', (93, 96)) ('MAX', 'Gene', '4149', (93, 96)) ('malignant tumors', 'Disease', (42, 58)) ('mutation', 'Var', (97, 105)) ('malignant tumors', 'Disease', 'MESH:D018198', (42, 58)) 85749 29282558 PCR-direct sequencing method showed that she had heterozygous germline mutation in MAX (c.70_73 del AAAC/p.Lys24fs*40). ('MAX', 'Gene', (83, 86)) ('c.70_73 del AAAC/p.Lys24fs*40', 'Var', (88, 117)) ('p.Lys24fs*40', 'Mutation', 'p.K24fsX40', (105, 117)) ('MAX', 'Gene', '4149', (83, 86)) ('c.70_73 del AAAC', 'Mutation', 'c.70_73delAAAC', (88, 104)) 85756 29282558 Whereas heterodimerization of MAX with MYC acts as transcriptional activators, heterodimers of MAX with MXD1 repress the MYC-dependent transcriptional activities by antagonizing MYC-MAX function. ('MAX', 'Gene', '4149', (30, 33)) ('MYC', 'Gene', (178, 181)) ('MXD1', 'Gene', (104, 108)) ('MAX', 'Gene', (182, 185)) ('MAX', 'Gene', '4149', (182, 185)) ('MYC', 'Gene', '4609', (39, 42)) ('MYC', 'Gene', (121, 124)) ('antagonizing', 'NegReg', (165, 177)) ('MYC', 'Gene', '4609', (121, 124)) ('MYC', 'Gene', '4609', (178, 181)) ('MXD1', 'Gene', '4084', (104, 108)) ('MAX', 'Gene', (30, 33)) ('MAX', 'Gene', '4149', (95, 98)) ('MAX', 'Gene', (95, 98)) ('repress', 'NegReg', (109, 116)) ('MYC', 'Gene', (39, 42)) ('heterodimers', 'Var', (79, 91)) 85758 29282558 MAX gene mutations were identified as one of the causes of hereditary PPGLs by the next-generation whole exome sequencing in 2011. ('MAX', 'Gene', (0, 3)) ('PPGLs', 'Disease', (70, 75)) ('mutations', 'Var', (9, 18)) ('MAX', 'Gene', '4149', (0, 3)) ('causes', 'Reg', (49, 55)) 85764 29282558 PPGLs with MAX mutations were likely to generate predominantly excess norepinephrine. ('MAX', 'Gene', '4149', (11, 14)) ('MAX', 'Gene', (11, 14)) ('mutations', 'Var', (15, 24)) ('norepinephrine', 'MPA', (70, 84)) ('excess norepinephrine', 'Phenotype', 'HP:0003345', (63, 84)) ('norepinephrine', 'Chemical', 'MESH:D009638', (70, 84)) 85768 29282558 Although various mutations have been identified in MAX so far, the mutation of c.70_73 del AAAC/p.Lys24fs*40 has not been reported before. ('MAX', 'Gene', (51, 54)) ('c.70_73 del AAAC', 'Mutation', 'c.70_73delAAAC', (79, 95)) ('MAX', 'Gene', '4149', (51, 54)) ('c.70_73 del AAAC/p.Lys24fs', 'Var', (79, 105)) ('p.Lys24fs*40', 'Mutation', 'p.K24fsX40', (96, 108)) 85769 29282558 This mutation had led to a change in the predicted amino acid sequence; the lysine at codon 24 in the wild-type MAX protein was changed to a glycine in the mutant MAX protein, and a stop codon was located 40 codons downstream from codon 24. ('lysine', 'Chemical', 'MESH:D008239', (76, 82)) ('glycine', 'Chemical', 'MESH:D005998', (141, 148)) ('changed', 'Reg', (128, 135)) ('MAX', 'Gene', (163, 166)) ('MAX', 'Gene', '4149', (163, 166)) ('mutant', 'Var', (156, 162)) ('MAX', 'Gene', '4149', (112, 115)) ('MAX', 'Gene', (112, 115)) 85770 29282558 Thus, it is proposed that this newly detected mutation disrupts the MAX protein. ('MAX', 'Gene', (68, 71)) ('mutation', 'Var', (46, 54)) ('disrupts', 'NegReg', (55, 63)) ('MAX', 'Gene', '4149', (68, 71)) 85771 29282558 Because aberrant MYC-MAX-MXD1 network is implicated in wide-range malignancies, it is worth to be noted that germline MAX mutation carriers may have increased susceptibility to develop other malignant tumors. ('MAX', 'Gene', (21, 24)) ('MYC', 'Gene', (17, 20)) ('malignant tumors', 'Disease', 'MESH:D018198', (191, 207)) ('MAX', 'Gene', '4149', (21, 24)) ('mutation', 'Var', (122, 130)) ('MXD1', 'Gene', '4084', (25, 29)) ('MYC', 'Gene', '4609', (17, 20)) ('tumor', 'Phenotype', 'HP:0002664', (201, 206)) ('MAX', 'Gene', '4149', (118, 121)) ('MAX', 'Gene', (118, 121)) ('aberrant', 'Var', (8, 16)) ('develop', 'PosReg', (177, 184)) ('malignancies', 'Disease', 'MESH:D009369', (66, 78)) ('implicated', 'Reg', (41, 51)) ('malignancies', 'Disease', (66, 78)) ('malignant tumors', 'Disease', (191, 207)) ('tumors', 'Phenotype', 'HP:0002664', (201, 207)) ('MXD1', 'Gene', (25, 29)) 85772 29282558 In the literature, two in 19 PPGL patients with MAX mutations had cancers, breast cancer, and squamous cell carcinoma of the tongue. ('mutations', 'Var', (52, 61)) ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('carcinoma', 'Phenotype', 'HP:0030731', (108, 117)) ('breast cancer', 'Disease', (75, 88)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (94, 117)) ('breast cancer', 'Phenotype', 'HP:0003002', (75, 88)) ('squamous cell carcinoma of the tongue', 'Phenotype', 'HP:0030413', (94, 131)) ('had', 'Reg', (62, 65)) ('MAX', 'Gene', (48, 51)) ('squamous cell carcinoma', 'Disease', (94, 117)) ('MAX', 'Gene', '4149', (48, 51)) ('squamous cell carcinoma', 'Disease', 'MESH:D002294', (94, 117)) ('cancer', 'Phenotype', 'HP:0002664', (66, 72)) ('cancers', 'Phenotype', 'HP:0002664', (66, 73)) ('patients', 'Species', '9606', (34, 42)) ('cancers', 'Disease', (66, 73)) ('cancers', 'Disease', 'MESH:D009369', (66, 73)) ('breast cancer', 'Disease', 'MESH:D001943', (75, 88)) 85781 29282558 Recently, cortical sparing adrenalectomy in patients with RET or VHL mutations which had low risk of malignant PPGL has been reported. ('RET', 'Gene', '5979', (58, 61)) ('mutations', 'Var', (69, 78)) ('patients', 'Species', '9606', (44, 52)) ('RET', 'Gene', (58, 61)) ('VHL', 'Disease', (65, 68)) ('VHL', 'Disease', 'MESH:D006623', (65, 68)) 85783 29282558 We reported a rare case of PPGL with germline mutation in MAX. ('MAX', 'Gene', '4149', (58, 61)) ('MAX', 'Gene', (58, 61)) ('PPGL', 'Disease', (27, 31)) ('germline mutation', 'Var', (37, 54)) 85785 29282558 A close follow-up for both recurrent PPGL and other types of malignant tumors is essential for the patients with MAX mutation. ('MAX', 'Gene', '4149', (113, 116)) ('PPGL', 'Disease', (37, 41)) ('malignant tumors', 'Disease', (61, 77)) ('malignant tumors', 'Disease', 'MESH:D018198', (61, 77)) ('patients', 'Species', '9606', (99, 107)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('mutation', 'Var', (117, 125)) ('MAX', 'Gene', (113, 116)) 85790 28721348 Patients diagnosed with pheochromocytoma in the Region of Southern Denmark during 2006-2013 without previously recognized monogenetic etiology were offered genetic screening for mutations in the VHL, RET, SDHB, SDHC, and SDHD genes. ('RET', 'Gene', (200, 203)) ('SDHD', 'Gene', (221, 225)) ('SDHD', 'Gene', '6392', (221, 225)) ('SDHC', 'Gene', '6391', (211, 215)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (24, 40)) ('SDHB', 'Gene', (205, 209)) ('Patients', 'Species', '9606', (0, 8)) ('RET', 'Gene', '5979', (200, 203)) ('SDHC', 'Gene', (211, 215)) ('VHL', 'Gene', (195, 198)) ('pheochromocytoma', 'Disease', (24, 40)) ('mutations', 'Var', (178, 187)) ('SDHB', 'Gene', '6390', (205, 209)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (24, 40)) ('VHL', 'Gene', '7428', (195, 198)) 85792 28721348 In four of the 35 patients, a pathogenic variant was identified prior to the diagnosis of pheochromocytoma (von Hippel-Lindau disease, n=2; neurofibromatosis type 1, n=2). ('pheochromocytoma', 'Disease', 'MESH:D010673', (90, 106)) ('neurofibromatosis type 1', 'Gene', '4763', (140, 164)) ('neurofibromatosis type 1', 'Gene', (140, 164)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (108, 133)) ('von Hippel-Lindau disease', 'Disease', (108, 133)) ('patients', 'Species', '9606', (18, 26)) ('pheochromocytoma', 'Disease', (90, 106)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (140, 157)) ('variant', 'Var', (41, 48)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (90, 106)) 85793 28721348 The patients carrying a genetic mutation were all younger than 45 years at time of diagnosis of pheochromocytoma, two patients presented with bilateral tumors, and one patient had a positive family history of pheochromocytoma. ('bilateral tumors', 'Disease', (142, 158)) ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('patients', 'Species', '9606', (118, 126)) ('patient', 'Species', '9606', (168, 175)) ('patient', 'Species', '9606', (4, 11)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (209, 225)) ('bilateral tumors', 'Disease', 'MESH:D009396', (142, 158)) ('pheochromocytoma', 'Disease', (96, 112)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (96, 112)) ('patient', 'Species', '9606', (118, 125)) ('pheochromocytoma', 'Disease', (209, 225)) ('patients', 'Species', '9606', (4, 12)) ('tumors', 'Phenotype', 'HP:0002664', (152, 158)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (209, 225)) ('genetic mutation', 'Var', (24, 40)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (96, 112)) 85803 28721348 Additionally, patients with mutations of the SDHB gene demand special attention, because they have a high risk of malignant disease that reflects both the typically large sizes and extra-adrenal location of associated tumors. ('malignant disease', 'Disease', (114, 131)) ('tumors', 'Phenotype', 'HP:0002664', (218, 224)) ('tumors', 'Disease', 'MESH:D009369', (218, 224)) ('malignant disease', 'Disease', 'MESH:D009369', (114, 131)) ('tumor', 'Phenotype', 'HP:0002664', (218, 223)) ('SDHB', 'Gene', '6390', (45, 49)) ('SDHB', 'Gene', (45, 49)) ('patients', 'Species', '9606', (14, 22)) ('mutations', 'Var', (28, 37)) ('tumors', 'Disease', (218, 224)) 85807 28721348 Identification of pathogenic genetic mutation in patients with pheochromocytoma confirms the clinical diagnosis and allows for genetic counseling and predictive testing of family members. ('pathogenic', 'Reg', (18, 28)) ('genetic mutation', 'Var', (29, 45)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (63, 79)) ('patients', 'Species', '9606', (49, 57)) ('pheochromocytoma', 'Disease', (63, 79)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (63, 79)) 85821 28721348 VHL, RET, SDHB, SDHC, and SDHD were analyzed with sequencing of all coding regions and subsequently analyzed for deletions and duplications. ('SDHC', 'Gene', (16, 20)) ('SDHC', 'Gene', '6391', (16, 20)) ('deletions', 'Var', (113, 122)) ('RET', 'Gene', (5, 8)) ('SDHD', 'Gene', (26, 30)) ('SDHD', 'Gene', '6392', (26, 30)) ('VHL', 'Gene', (0, 3)) ('RET', 'Gene', '5979', (5, 8)) ('SDHB', 'Gene', '6390', (10, 14)) ('VHL', 'Gene', '7428', (0, 3)) ('SDHB', 'Gene', (10, 14)) 85832 28721348 This patient did however have bilateral vestibular schwannomas and a genetic screening identified an NF2 mutation and thus NF2. ('mutation', 'Var', (105, 113)) ('patient', 'Species', '9606', (5, 12)) ('bilateral vestibular schwannomas', 'Disease', 'MESH:D009464', (30, 62)) ('NF2', 'Gene', '4771', (123, 126)) ('schwannomas', 'Phenotype', 'HP:0100008', (51, 62)) ('vestibular schwannomas', 'Phenotype', 'HP:0009588', (40, 62)) ('bilateral vestibular schwannomas', 'Phenotype', 'HP:0009589', (30, 62)) ('NF2', 'Gene', (101, 104)) ('bilateral vestibular schwannomas', 'Disease', (30, 62)) ('NF2', 'Gene', (123, 126)) ('NF2', 'Gene', '4771', (101, 104)) 85833 28721348 Five patients declined genetic screening, including four female patients aged 65, 76, 79, and 83 years and one male patient aged 52 years at the time of diagnosis. ('genetic', 'Var', (23, 30)) ('patient', 'Species', '9606', (5, 12)) ('patients', 'Species', '9606', (5, 13)) ('patients', 'Species', '9606', (64, 72)) ('patient', 'Species', '9606', (64, 71)) ('patient', 'Species', '9606', (116, 123)) ('declined', 'NegReg', (14, 22)) 85834 28721348 Four patients carried a germ-line mutation in a gene associated with pheochromocytoma. ('patients', 'Species', '9606', (5, 13)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (69, 85)) ('mutation', 'Var', (34, 42)) ('pheochromocytoma', 'Disease', (69, 85)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (69, 85)) 85835 28721348 All four patients were diagnosed with the genetic mutation prior to the diagnosis of pheochromocytoma (Tables 1 and 2). ('patients', 'Species', '9606', (9, 17)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (85, 101)) ('pheochromocytoma', 'Disease', (85, 101)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (85, 101)) ('genetic mutation', 'Var', (42, 58)) 85839 28721348 All patients screened for genetic mutation (n=31) had a negative family history of pheochromocytomas, and metastatic disease was not found in any of the patients. ('patients', 'Species', '9606', (153, 161)) ('genetic mutation', 'Var', (26, 42)) ('pheochromocytomas', 'Disease', (83, 100)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (83, 100)) ('patients', 'Species', '9606', (4, 12)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (83, 100)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (83, 99)) 85850 28721348 In the present study, four (11.4%) patients harbored a germ-line mutation predisposing them to the pheochromocytoma. ('pheochromocytoma', 'Disease', (99, 115)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (99, 115)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (99, 115)) ('mutation', 'Var', (65, 73)) ('patients', 'Species', '9606', (35, 43)) 85856 28721348 The exclusion of these tumors could explain the lower prevalence of genetic mutations in the present study. ('tumors', 'Disease', 'MESH:D009369', (23, 29)) ('tumors', 'Disease', (23, 29)) ('genetic mutations', 'Var', (68, 85)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('tumors', 'Phenotype', 'HP:0002664', (23, 29)) 85861 28721348 Mannelli et al found predisposed germ-line mutations in 161 of 501 (32.1%) patients with pheochromocytoma and/or paraganglioma and in 102 of 341 (29.9%) patients when paragangliomas were excluded. ('paragangliomas', 'Disease', 'MESH:D010235', (167, 181)) ('paraganglioma', 'Disease', (167, 180)) ('patients', 'Species', '9606', (153, 161)) ('paraganglioma', 'Phenotype', 'HP:0002668', (113, 126)) ('patients', 'Species', '9606', (75, 83)) ('pheochromocytoma', 'Disease', (89, 105)) ('paraganglioma', 'Disease', (113, 126)) ('paraganglioma', 'Disease', 'MESH:D010235', (167, 180)) ('mutations', 'Var', (43, 52)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (89, 105)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (89, 105)) ('paraganglioma', 'Disease', 'MESH:D010235', (113, 126)) ('paragangliomas', 'Disease', (167, 181)) ('paraganglioma', 'Phenotype', 'HP:0002668', (167, 180)) ('paragangliomas', 'Phenotype', 'HP:0002668', (167, 181)) 85862 28721348 A screening for mutations in the RET, VHL, SDHB, and SDHD identified predisposed germ-line mutations in 66 of 271 (24.4%) patients with nonsyndromic pheochromocytoma and no family history and in 52 of 241 (21.6%) patients when paragangliomas were excluded. ('paragangliomas', 'Disease', (227, 241)) ('nonsyndromic pheochromocytoma', 'Disease', 'MESH:D010673', (136, 165)) ('RET', 'Gene', '5979', (33, 36)) ('VHL', 'Gene', (38, 41)) ('patients', 'Species', '9606', (213, 221)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (149, 165)) ('mutations', 'Var', (16, 25)) ('nonsyndromic pheochromocytoma', 'Disease', (136, 165)) ('VHL', 'Gene', '7428', (38, 41)) ('RET', 'Gene', (33, 36)) ('SDHB', 'Gene', '6390', (43, 47)) ('predisposed', 'Reg', (69, 80)) ('paragangliomas', 'Disease', 'MESH:D010235', (227, 241)) ('paraganglioma', 'Phenotype', 'HP:0002668', (227, 240)) ('paragangliomas', 'Phenotype', 'HP:0002668', (227, 241)) ('SDHD', 'Gene', '6392', (53, 57)) ('patients', 'Species', '9606', (122, 130)) ('SDHD', 'Gene', (53, 57)) ('SDHB', 'Gene', (43, 47)) ('mutations', 'Var', (91, 100)) 85871 28721348 The inclusion of patients with pheochromocytoma diagnosed during the evaluation of adrenal incidentaloma could have affected the prevalence of genetic mutations in the present study. ('adrenal incidentaloma', 'Disease', 'MESH:C538238', (83, 104)) ('affected', 'Reg', (116, 124)) ('genetic mutations', 'Var', (143, 160)) ('patients', 'Species', '9606', (17, 25)) ('adrenal incidentaloma', 'Disease', (83, 104)) ('pheochromocytoma', 'Disease', (31, 47)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (31, 47)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (31, 47)) 85977 27194431 Nuclear pleomorphism is not reliable as a determinant of malignancy. ('malignancy', 'Disease', (57, 67)) ('malignancy', 'Disease', 'MESH:D009369', (57, 67)) ('Nuclear pleomorphism', 'Var', (0, 20)) 85984 27194431 Germline mutation of the succinate dehydrogenase complex, subunit B (SDHB) gene is considered a strong risk factor for malignancy. ('malignancy', 'Disease', (119, 129)) (', subunit B (SDHB', 'Gene', (56, 73)) ('risk', 'Reg', (103, 107)) ('Germline mutation', 'Var', (0, 17)) (', subunit B (SDHB)', 'Gene', '699810', (56, 74)) ('malignancy', 'Disease', 'MESH:D009369', (119, 129)) 86024 27194431 MEN-2, a heritable condition caused by mutation of the receptor tyrosine kinase proto-oncogene (RET), is associated with three primary types of tumors in humans: pheochromocytoma, medullary thyroid carcinoma, and parathyroid tumor. ('tumors', 'Disease', (144, 150)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (190, 207)) ('proto-oncogene (RET)', 'Gene', '5979', (80, 100)) ('tumors', 'Disease', 'MESH:D009369', (144, 150)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (162, 178)) ('carcinoma', 'Phenotype', 'HP:0030731', (198, 207)) ('MEN', 'Species', '9606', (0, 3)) ('proto-oncogene (RET', 'Gene', (80, 99)) ('pheochromocytoma', 'Disease', (162, 178)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (162, 178)) ('tumor', 'Phenotype', 'HP:0002664', (225, 230)) ('humans', 'Species', '9606', (154, 160)) ('parathyroid tumor', 'Disease', 'MESH:D010282', (213, 230)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (180, 207)) ('tumors', 'Phenotype', 'HP:0002664', (144, 150)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (190, 207)) ('mutation', 'Var', (39, 47)) ('caused by', 'Reg', (29, 38)) ('parathyroid tumor', 'Phenotype', 'HP:0100733', (213, 230)) ('thyroid carcinoma', 'Disease', (190, 207)) ('MEN-2', 'Disease', (0, 5)) ('parathyroid tumor', 'Disease', (213, 230)) ('associated', 'Reg', (105, 115)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) 86034 22089927 Several lines of evidence, including the recent identification of mutations affecting Fumarate Hydratase, Succinate Dehydrogenase, and Isocitrate Dehydrogenase, have strengthened the notion that altered metabolism can cause cancer and a number of non-mutually exclusive models have been put forth to rationalize why cancer cells might benefit from a high rate of glycolysis and decreased oxidative phosphorylation. ('mutations', 'Var', (66, 75)) ('Fumarate Hydratase', 'Gene', (86, 104)) ('rat', 'Species', '10116', (141, 144)) ('cancer', 'Disease', (224, 230)) ('cancer', 'Phenotype', 'HP:0002664', (224, 230)) ('glycolysis', 'MPA', (363, 373)) ('cancer', 'Disease', (316, 322)) ('rat', 'Species', '10116', (300, 303)) ('altered', 'Var', (195, 202)) ('rat', 'Species', '10116', (355, 358)) ('cancer', 'Phenotype', 'HP:0002664', (316, 322)) ('cancer', 'Disease', 'MESH:D009369', (224, 230)) ('oxidative phosphorylation', 'MPA', (388, 413)) ('rat', 'Species', '10116', (90, 93)) ('cause', 'Reg', (218, 223)) ('decreased', 'NegReg', (378, 387)) ('rat', 'Species', '10116', (98, 101)) ('cancer', 'Disease', 'MESH:D009369', (316, 322)) ('metabolism', 'MPA', (203, 213)) ('Fumarate Hydratase', 'Gene', '2271', (86, 104)) 86044 22089927 Hydroxylation of either site creates a binding site for a ubiquitin ligase that contains the pVHL tumor suppressor protein. ('VHL tumor', 'Disease', 'MESH:D006623', (94, 103)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('Hydroxylation', 'Var', (0, 13)) ('binding', 'Interaction', (39, 46)) ('VHL tumor', 'Disease', (94, 103)) ('ubiquitin ligase', 'Enzyme', (58, 74)) 86050 22089927 The Warburg Effect is due, at least in part, to the failure of cancer cells to appropriately downregulate HIF under well oxygenated conditions, either because of mutations that increase HIF production or that decrease HIF destruction (Fig 1). ('mutations', 'Var', (162, 171)) ('Warburg', 'Disease', (4, 11)) ('cancer', 'Phenotype', 'HP:0002664', (63, 69)) ('cancer', 'Disease', 'MESH:D009369', (63, 69)) ('increase', 'PosReg', (177, 185)) ('HIF production', 'MPA', (186, 200)) ('oxygen', 'Chemical', 'MESH:D010100', (121, 127)) ('decrease HIF destruction', 'Disease', 'MESH:D008105', (209, 233)) ('decrease HIF destruction', 'Disease', (209, 233)) ('downregulate', 'NegReg', (93, 105)) ('cancer', 'Disease', (63, 69)) 86051 22089927 With respect to increased HIFalpha production, mutations that directly or indirectly inactivate the TSC complex, such as activating mutations of PI3K or AKT, lead to increased TORC1 activity. ('TORC1', 'Gene', '23373', (176, 181)) ('AKT', 'Gene', '207', (153, 156)) ('HIFalpha production', 'MPA', (26, 45)) ('increased', 'PosReg', (166, 175)) ('mutations', 'Var', (132, 141)) ('inactivate', 'NegReg', (85, 95)) ('activating', 'PosReg', (121, 131)) ('TORC1', 'Gene', (176, 181)) ('mutations', 'Var', (47, 56)) ('TSC', 'Gene', (100, 103)) ('AKT', 'Gene', (153, 156)) ('TSC', 'Gene', '7249', (100, 103)) ('PI3K', 'Gene', (145, 149)) 86053 22089927 With respect to decreased HIFalpha destruction, inactivating mutations of the VHL tumor suppressor gene lead to impaired HIFalpha proteasomal degradation for the reasons outlined above (Fig 2). ('VHL tumor', 'Disease', (78, 87)) ('inactivating mutations', 'Var', (48, 70)) ('HIFalpha proteasomal degradation', 'MPA', (121, 153)) ('VHL tumor', 'Disease', 'MESH:D006623', (78, 87)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('impaired', 'NegReg', (112, 120)) 86054 22089927 Similarly, inactivating SDH and FH mutations lead to the accumulation of succinate and fumarate, respectively, which inhibit EglN activity by competing with 2-oxoglutarate, thereby allowing HIFalpha to escape recognition by pVHL (Fig 1). ('inactivating', 'Var', (11, 23)) ('accumulation', 'PosReg', (57, 69)) ('succinate', 'Chemical', 'MESH:D019802', (73, 82)) ('SDH', 'Gene', '6390', (24, 27)) ('EglN', 'Chemical', '-', (125, 129)) ('escape', 'MPA', (202, 208)) ('EglN activity', 'MPA', (125, 138)) ('2-oxoglutarate', 'Chemical', 'MESH:D007656', (157, 171)) ('succinate', 'MPA', (73, 82)) ('SDH', 'Gene', (24, 27)) ('fumarate', 'Chemical', 'MESH:D005650', (87, 95)) ('inhibit', 'NegReg', (117, 124)) ('allowing', 'Reg', (181, 189)) ('mutations', 'Var', (35, 44)) 86055 22089927 A recent study suggested that IDH mutations lower 2-oxoglutarate production and hence EglN activity, leading to HIFalpha stabilization, although this finding has been disputed. ('lower', 'NegReg', (44, 49)) ('EglN', 'Enzyme', (86, 90)) ('leading to', 'Reg', (101, 111)) ('activity', 'MPA', (91, 99)) ('HIFalpha', 'Disease', (112, 120)) ('lower 2-oxoglutarate production', 'Phenotype', 'HP:0012403', (44, 75)) ('IDH', 'Gene', (30, 33)) ('2-oxoglutarate production', 'MPA', (50, 75)) ('2-oxoglutarate', 'Chemical', 'MESH:D007656', (50, 64)) ('IDH', 'Gene', '3417', (30, 33)) ('mutations', 'Var', (34, 43)) ('EglN', 'Chemical', '-', (86, 90)) 86056 22089927 More recent studies indicate that cancer-relevant IDH mutations acquire the neomorphic ability to produce the 2-hydroxyglutarate but 2-HG does not appear to inhibit EglN activity. ('cancer', 'Phenotype', 'HP:0002664', (34, 40)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (110, 128)) ('mutations', 'Var', (54, 63)) ('cancer', 'Disease', 'MESH:D009369', (34, 40)) ('EglN', 'Chemical', '-', (165, 169)) ('cancer', 'Disease', (34, 40)) ('produce the 2-hydroxyglutarate', 'MPA', (98, 128)) ('IDH', 'Gene', (50, 53)) ('EglN activity', 'MPA', (165, 178)) ('IDH', 'Gene', '3417', (50, 53)) 86057 22089927 For example, many of the effects of HIF on cell metabolism are reinforced by other molecular perturbations in cancer cells including those leading to activation of c-Myc or loss of p53. ('p53', 'Gene', (181, 184)) ('p53', 'Gene', '7157', (181, 184)) ('cancer', 'Disease', (110, 116)) ('cell metabolism', 'MPA', (43, 58)) ('c-Myc', 'Gene', (164, 169)) ('activation', 'PosReg', (150, 160)) ('c-Myc', 'Gene', '4609', (164, 169)) ('cancer', 'Phenotype', 'HP:0002664', (110, 116)) ('loss', 'Var', (173, 177)) ('cancer', 'Disease', 'MESH:D009369', (110, 116)) 86070 22089927 Moreover, deletion of HIFalpha (or ARNT) has been shown to decrease tumor growth in nude mouse subcutaneous xenograft assays. ('tumor', 'Disease', (68, 73)) ('HIFalpha', 'Gene', (22, 30)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('ARNT', 'Gene', (35, 39)) ('decrease', 'NegReg', (59, 67)) ('deletion', 'Var', (10, 18)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('mouse', 'Species', '10090', (89, 94)) 86072 22089927 For example, deletion of HIF1alpha promotes the growth of teratocarcinomas formed by ES cells and orthotopic tumors form by transformed astrocytes. ('tumors', 'Disease', 'MESH:D009369', (109, 115)) ('teratocarcinomas', 'Disease', (58, 74)) ('tumors', 'Phenotype', 'HP:0002664', (109, 115)) ('teratocarcinomas', 'Disease', 'MESH:D018243', (58, 74)) ('promotes', 'PosReg', (35, 43)) ('HIF1alpha', 'Gene', (25, 34)) ('deletion', 'Var', (13, 21)) ('growth', 'MPA', (48, 54)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('carcinoma', 'Phenotype', 'HP:0030731', (64, 73)) ('HIF1alpha', 'Gene', '3091', (25, 34)) ('tumors', 'Disease', (109, 115)) ('carcinomas', 'Phenotype', 'HP:0030731', (64, 74)) 86073 22089927 Deletion of HIF2alpha has been shown to promote the growth of K-Ras-driven lung adenocarcinomas in genetically engineered mice and the growth of astrocytomas. ('astrocytomas', 'Disease', (145, 157)) ('promote', 'PosReg', (40, 47)) ('mice', 'Species', '10090', (122, 126)) ('HIF2alpha', 'Gene', (12, 21)) ('growth', 'CPA', (135, 141)) ('lung adenocarcinomas', 'Disease', (75, 95)) ('lung adenocarcinomas', 'Disease', 'MESH:D000077192', (75, 95)) ('astrocytomas', 'Disease', 'MESH:D001254', (145, 157)) ('carcinoma', 'Phenotype', 'HP:0030731', (85, 94)) ('growth', 'MPA', (52, 58)) ('lung adenocarcinomas', 'Phenotype', 'HP:0030078', (75, 95)) ('carcinomas', 'Phenotype', 'HP:0030731', (85, 95)) ('Deletion', 'Var', (0, 8)) 86076 22089927 In preclinical models, including orthotopic models, elimination of HIF2alpha is sufficient to inhibit pVHL-defective tumor growth while restoring HIF2alpha (but not HIF1alpha) production is sufficient to override tumor suppression by pVHL. ('tumor', 'Disease', (213, 218)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('HIF1alpha', 'Gene', (165, 174)) ('tumor', 'Disease', (117, 122)) ('HIF2alpha', 'MPA', (146, 155)) ('HIF2alpha', 'Gene', (67, 76)) ('HIF1alpha', 'Gene', '3091', (165, 174)) ('elimination', 'Var', (52, 63)) ('tumor', 'Disease', 'MESH:D009369', (117, 122)) ('tumor', 'Disease', 'MESH:D009369', (213, 218)) ('override', 'PosReg', (204, 212)) ('tumor', 'Phenotype', 'HP:0002664', (213, 218)) ('inhibit', 'NegReg', (94, 101)) 86078 22089927 In patients with germline VHL mutations the degree to which their VHL alleles are compromised with respect to HIF regulation tracks closely with their risk of kidney cancer and single nucleotide polymorphisms in the general population have been linked to the risk of kidney cancer. ('VHL', 'Gene', (26, 29)) ('kidney cancer', 'Disease', 'MESH:D007680', (159, 172)) ('VHL', 'Gene', '7428', (26, 29)) ('kidney cancer', 'Phenotype', 'HP:0009726', (159, 172)) ('patients', 'Species', '9606', (3, 11)) ('mutations', 'Var', (30, 39)) ('kidney cancer', 'Phenotype', 'HP:0009726', (267, 280)) ('kidney cancer', 'Disease', 'MESH:D007680', (267, 280)) ('linked', 'Reg', (245, 251)) ('cancer', 'Phenotype', 'HP:0002664', (166, 172)) ('kidney cancer', 'Disease', (159, 172)) ('cancer', 'Phenotype', 'HP:0002664', (274, 280)) ('VHL', 'Gene', '7428', (66, 69)) ('VHL', 'Gene', (66, 69)) ('kidney cancer', 'Disease', (267, 280)) 86079 22089927 Collectively, these results suggest that HIF2alpha is a kidney cancer oncoprotein. ('cancer', 'Phenotype', 'HP:0002664', (63, 69)) ('kidney cancer', 'Phenotype', 'HP:0009726', (56, 69)) ('kidney cancer', 'Disease', 'MESH:D007680', (56, 69)) ('kidney cancer', 'Disease', (56, 69)) ('HIF2alpha', 'Var', (41, 50)) 86081 22089927 Three signature chromosomal abnormalities in kidney cancer are loss of chromosome 3p, spanning the VHL gene, loss of chromosome 14q, and gain of chromosome 5q. ('cancer', 'Phenotype', 'HP:0002664', (52, 58)) ('chromosomal abnormalities in kidney cancer', 'Disease', 'MESH:D007680', (16, 58)) ('VHL', 'Gene', (99, 102)) ('kidney cancer', 'Phenotype', 'HP:0009726', (45, 58)) ('chromosomal abnormalities in kidney cancer', 'Disease', (16, 58)) ('VHL', 'Gene', '7428', (99, 102)) ('loss', 'Var', (109, 113)) ('abnormalities in kidney', 'Phenotype', 'HP:0000077', (28, 51)) ('gain', 'PosReg', (137, 141)) ('loss', 'NegReg', (63, 67)) 86082 22089927 Chromosome 14q loss is most common in kidney cancer relative to other tumor types and almost invariably leads to loss of HIF1alpha located at 14q22. ('kidney cancer', 'Disease', 'MESH:D007680', (38, 51)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('cancer', 'Phenotype', 'HP:0002664', (45, 51)) ('kidney cancer', 'Phenotype', 'HP:0009726', (38, 51)) ('tumor', 'Disease', (70, 75)) ('loss', 'NegReg', (15, 19)) ('loss', 'NegReg', (113, 117)) ('kidney cancer', 'Disease', (38, 51)) ('HIF1alpha', 'Gene', (121, 130)) ('Chromosome', 'Var', (0, 10)) ('HIF1alpha', 'Gene', '3091', (121, 130)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) 86083 22089927 Many pVHL-defective renal carcinoma lines harbor focal, homozygous, HIF1alpha deletions that lead to the production of either no HIF1alpha protein or the production of HIF1alpha variants that reflect alternative splicing events that circumvent the missing exons. ('pVHL-defective renal carcinoma lines', 'Disease', 'MESH:C538614', (5, 41)) ('HIF1alpha', 'Gene', (68, 77)) ('HIF1alpha', 'Gene', '3091', (129, 138)) ('pVHL-defective renal carcinoma lines', 'Disease', (5, 41)) ('HIF1alpha', 'Gene', '3091', (68, 77)) ('HIF1alpha', 'Gene', (168, 177)) ('carcinoma', 'Phenotype', 'HP:0030731', (26, 35)) ('HIF1alpha', 'Gene', '3091', (168, 177)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (20, 35)) ('HIF1alpha', 'Gene', (129, 138)) ('deletions', 'Var', (78, 87)) 86084 22089927 Restoration of wild-type HIF1alpha in such cells suppresses their ability to proliferate in vitro and in vivo. ('rat', 'Species', '10116', (84, 87)) ('Restoration', 'Var', (0, 11)) ('HIF1alpha', 'Gene', (25, 34)) ('rat', 'Species', '10116', (5, 8)) ('ability to proliferate', 'CPA', (66, 88)) ('HIF1alpha', 'Gene', '3091', (25, 34)) ('suppresses', 'NegReg', (49, 59)) 86085 22089927 Conversely, elimination of wild-type HIF1alpha in HIF1alpha-proficient cells enhances their proliferation in vitro and in vivo. ('HIF1alpha', 'Gene', '3091', (37, 46)) ('rat', 'Species', '10116', (99, 102)) ('enhances', 'PosReg', (77, 85)) ('elimination', 'Var', (12, 23)) ('proliferation', 'CPA', (92, 105)) ('HIF1alpha', 'Gene', (50, 59)) ('HIF1alpha', 'Gene', (37, 46)) ('HIF1alpha', 'Gene', '3091', (50, 59)) 86086 22089927 Intragenic HIF1alpha mutations have been identified in kidney cancer genome sequencing projects and, when tested, have proven to be loss of function. ('cancer', 'Phenotype', 'HP:0002664', (62, 68)) ('HIF1alpha', 'Gene', (11, 20)) ('kidney cancer', 'Phenotype', 'HP:0009726', (55, 68)) ('kidney cancer', 'Disease', 'MESH:D007680', (55, 68)) ('kidney cancer', 'Disease', (55, 68)) ('HIF1alpha', 'Gene', '3091', (11, 20)) ('mutations', 'Var', (21, 30)) 86090 22089927 In keeping with this idea, 14q deleted tumors have a transcriptional signature indicative of HIF1alpha loss. ('14q deleted', 'Var', (27, 38)) ('tumors', 'Phenotype', 'HP:0002664', (39, 45)) ('HIF1alpha loss', 'Disease', 'MESH:D015431', (93, 107)) ('transcriptional signature', 'MPA', (53, 78)) ('tumors', 'Disease', 'MESH:D009369', (39, 45)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('HIF1alpha loss', 'Disease', (93, 107)) ('tumors', 'Disease', (39, 45)) 86091 22089927 Deregulation of HIF is also suspected of playing a pathogenic role in papillary renal carcinomas linked to fumarate hydratase deficiency and to paragangliomas linked to succinate dehydrogenase deficiency, although the paucity of relevant cell culture and mouse models has so far prevented the types of preclinical validation experiments described above for pVHL-defective clear cell renal carcinomas to determine whether truly plays a causal, as opposed to correlative, role in these settings. ('paragangliomas', 'Disease', 'MESH:D010235', (144, 158)) ('paragangliomas', 'Phenotype', 'HP:0002668', (144, 158)) ('deficiency', 'Var', (126, 136)) ('mouse', 'Species', '10090', (255, 260)) ('paraganglioma', 'Phenotype', 'HP:0002668', (144, 157)) ('succinate', 'Chemical', 'MESH:D019802', (169, 178)) ('pVHL-defective clear cell renal carcinomas', 'Disease', 'MESH:C538614', (357, 399)) ('fumarate hydratase', 'Gene', (107, 125)) ('carcinoma', 'Phenotype', 'HP:0030731', (389, 398)) ('carcinomas', 'Phenotype', 'HP:0030731', (389, 399)) ('pVHL-defective clear cell renal carcinomas', 'Disease', (357, 399)) ('renal carcinoma', 'Disease', 'MESH:C538614', (383, 398)) ('paragangliomas', 'Disease', (144, 158)) ('carcinoma', 'Phenotype', 'HP:0030731', (86, 95)) ('carcinomas', 'Phenotype', 'HP:0030731', (86, 96)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (383, 398)) ('clear cell renal carcinomas', 'Phenotype', 'HP:0006770', (372, 399)) ('fumarate hydratase', 'Gene', '2271', (107, 125)) ('renal carcinomas', 'Phenotype', 'HP:0005584', (383, 399)) ('renal carcinoma', 'Disease', 'MESH:C538614', (80, 95)) ('renal carcinoma', 'Disease', (80, 95)) ('deficiency', 'Var', (193, 203)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (80, 95)) ('fumarate hydratase deficiency', 'Phenotype', 'HP:0003536', (107, 136)) ('renal carcinomas', 'Phenotype', 'HP:0005584', (80, 96)) ('papillary renal carcinomas', 'Phenotype', 'HP:0006766', (70, 96)) 86092 22089927 It has also been suggested that SDH mutations lead to paraganglioma in an EglN-dependent, but HIF-independent, manner based on the following observations. ('lead to', 'Reg', (46, 53)) ('paraganglioma', 'Disease', (54, 67)) ('EglN', 'Chemical', '-', (74, 78)) ('paraganglioma', 'Disease', 'MESH:D010235', (54, 67)) ('mutations', 'Var', (36, 45)) ('SDH', 'Gene', '6390', (32, 35)) ('SDH', 'Gene', (32, 35)) ('paraganglioma', 'Phenotype', 'HP:0002668', (54, 67)) 86094 22089927 This suggests that these genes control of a paraganglioma-relevant biologic process that takes place during embryological development. ('paraganglioma', 'Phenotype', 'HP:0002668', (44, 57)) ('paraganglioma', 'Disease', (44, 57)) ('genes', 'Var', (25, 30)) ('paraganglioma', 'Disease', 'MESH:D010235', (44, 57)) ('control', 'Reg', (31, 38)) 86095 22089927 Notably, some germline VHL mutations lead to a high risk of paraganglioma but not kidney cancer or the blood vessel tumors (hemangioblastomas) observed in classical VHL disease. ('mutations', 'Var', (27, 36)) ('blood vessel tumors', 'Disease', 'MESH:D009383', (103, 122)) ('paraganglioma', 'Disease', (60, 73)) ('blood vessel tumors', 'Phenotype', 'HP:0100742', (103, 122)) ('VHL', 'Gene', (23, 26)) ('hemangioblastomas', 'Disease', (124, 141)) ('paraganglioma', 'Disease', 'MESH:D010235', (60, 73)) ('blood vessel tumors', 'Disease', (103, 122)) ('VHL disease', 'Disease', 'MESH:D006623', (165, 176)) ('VHL', 'Gene', (165, 168)) ('tumors', 'Phenotype', 'HP:0002664', (116, 122)) ('kidney cancer', 'Phenotype', 'HP:0009726', (82, 95)) ('VHL disease', 'Disease', (165, 176)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) ('kidney cancer', 'Disease', (82, 95)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('VHL', 'Gene', '7428', (23, 26)) ('VHL', 'Gene', '7428', (165, 168)) ('paraganglioma', 'Phenotype', 'HP:0002668', (60, 73)) ('hemangioblastomas', 'Disease', 'MESH:D018325', (124, 141)) ('germline', 'Var', (14, 22)) ('kidney cancer', 'Disease', 'MESH:D007680', (82, 95)) 86096 22089927 When tested, the product of such mutant VHL alleles are essentially normal with respect to HIF regulation. ('VHL', 'Gene', (40, 43)) ('HIF regulation', 'MPA', (91, 105)) ('mutant', 'Var', (33, 39)) ('VHL', 'Gene', '7428', (40, 43)) 86097 22089927 Conversely, VHL mutations that confer a high risk of kidney cancer and low risk of paraganglioma lead to significant deregulation of HIF. ('VHL', 'Gene', (12, 15)) ('deregulation', 'MPA', (117, 129)) ('kidney cancer', 'Disease', 'MESH:D007680', (53, 66)) ('VHL', 'Gene', '7428', (12, 15)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('mutations', 'Var', (16, 25)) ('cancer', 'Phenotype', 'HP:0002664', (60, 66)) ('paraganglioma', 'Disease', (83, 96)) ('kidney cancer', 'Phenotype', 'HP:0009726', (53, 66)) ('HIF', 'MPA', (133, 136)) ('paraganglioma', 'Disease', 'MESH:D010235', (83, 96)) ('kidney cancer', 'Disease', (53, 66)) 86101 22089927 Paraganglioma-associated VHL mutations lead to activation of aPKC and Jun B, which represses EglN3 levels. ('Paraganglioma-associated', 'Disease', (0, 24)) ('EglN3 levels', 'MPA', (93, 105)) ('Jun B', 'Gene', (70, 75)) ('represses', 'NegReg', (83, 92)) ('aPKC', 'Enzyme', (61, 65)) ('mutations', 'Var', (29, 38)) ('activation', 'PosReg', (47, 57)) ('VHL', 'Gene', (25, 28)) ('VHL', 'Gene', '7428', (25, 28)) ('Jun B', 'Gene', '3726', (70, 75)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) 86102 22089927 Finally, SDH mutations lead to the accumuation of succinate, which inhibits EglN3-induced apoptosis. ('lead to', 'Reg', (23, 30)) ('succinate', 'Chemical', 'MESH:D019802', (50, 59)) ('mutations', 'Var', (13, 22)) ('EglN3-induced', 'MPA', (76, 89)) ('SDH', 'Gene', '6390', (9, 12)) ('inhibits', 'NegReg', (67, 75)) ('accumuation of succinate', 'MPA', (35, 59)) ('SDH', 'Gene', (9, 12)) 86104 22089927 The sympathetic nervous system abnormalities observed in EglN3-/- mice are consistent with this view. ('nervous system abnormalities', 'Phenotype', 'HP:0000707', (16, 44)) ('sympathetic nervous system abnormalities', 'MPA', (4, 44)) ('EglN3-/-', 'Var', (57, 65)) ('mice', 'Species', '10090', (66, 70)) 86106 22089927 Loss of function KIF1Bbeta mutations have been identified in a family with neural crest tumors and in a small subset of pheochromocytomas, medulloblastomas, and neuroblastomas. ('mutations', 'Var', (27, 36)) ('pheochromocytomas', 'Disease', (120, 137)) ('medulloblastomas', 'Disease', (139, 155)) ('neuroblastomas', 'Disease', (161, 175)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (120, 137)) ('neural crest tumors', 'Disease', 'MESH:C536408', (75, 94)) ('neural crest tumors', 'Disease', (75, 94)) ('Loss of function', 'NegReg', (0, 16)) ('KIF1Bbeta', 'Gene', (17, 26)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('medulloblastomas', 'Disease', 'MESH:D008527', (139, 155)) ('neuroblastomas', 'Disease', 'MESH:D009447', (161, 175)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (120, 137)) ('tumors', 'Phenotype', 'HP:0002664', (88, 94)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (161, 174)) 86107 22089927 The frequency of such mutations is low, however, relative to the frequency of 1p36 deletions in such tumors. ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('mutations', 'Var', (22, 31)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('tumors', 'Disease', (101, 107)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) 86109 22089927 It is also possible that the accumulation of succinate and fumarate observed in SDH and FH mutant tumors, as well as the accumulation of R-2-hydroxyglutarate in IDH mutant tumors, transforms cells by affecting the behavior of other 2-oxoglutarate-dependent enzymes in addition to (or in some cases, perhaps instead of) the EglN family members (Fig 1). ('tumors', 'Disease', (98, 104)) ('IDH', 'Gene', '3417', (161, 164)) ('tumors', 'Phenotype', 'HP:0002664', (172, 178)) ('tumors', 'Disease', 'MESH:D009369', (98, 104)) ('SDH', 'Gene', '6390', (80, 83)) ('EglN', 'Chemical', '-', (323, 327)) ('IDH', 'Gene', (161, 164)) ('2-oxoglutarate', 'Chemical', 'MESH:D007656', (232, 246)) ('tumor', 'Phenotype', 'HP:0002664', (172, 177)) ('tumors', 'Disease', (172, 178)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('fumarate', 'Chemical', 'MESH:D005650', (59, 67)) ('behavior', 'MPA', (214, 222)) ('2-oxoglutarate-dependent enzymes', 'Enzyme', (232, 264)) ('SDH', 'Gene', (80, 83)) ('affecting', 'Reg', (200, 209)) ('succinate', 'Chemical', 'MESH:D019802', (45, 54)) ('tumors', 'Phenotype', 'HP:0002664', (98, 104)) ('tumors', 'Disease', 'MESH:D009369', (172, 178)) ('R-2-hydroxyglutarate', 'Chemical', '-', (137, 157)) ('mutant', 'Var', (91, 97)) ('accumulation', 'PosReg', (29, 41)) 86116 22089927 Inactivating TET2 mutations, like IDH mutations, have been observed in acute leukemia and are mutually exclusive, consistent with the notion that IDH mutations lead to TET2 inactivation (and thereby eliminate the selection pressure to mutate TET2). ('IDH', 'Gene', (34, 37)) ('IDH', 'Gene', '3417', (146, 149)) ('TET2', 'Gene', '54790', (168, 172)) ('IDH', 'Gene', '3417', (34, 37)) ('TET2', 'Gene', '54790', (13, 17)) ('TET2', 'Gene', (242, 246)) ('mutations', 'Var', (150, 159)) ('TET2', 'Gene', (13, 17)) ('eliminate', 'NegReg', (199, 208)) ('leukemia', 'Phenotype', 'HP:0001909', (77, 85)) ('observed', 'Reg', (59, 67)) ('lead to', 'Reg', (160, 167)) ('TET2', 'Gene', (168, 172)) ('TET2', 'Gene', '54790', (242, 246)) ('leukemia', 'Disease', (77, 85)) ('leukemia', 'Disease', 'MESH:D007938', (77, 85)) ('IDH', 'Gene', (146, 149)) ('acute leukemia', 'Phenotype', 'HP:0002488', (71, 85)) ('inactivation', 'NegReg', (173, 185)) ('mutations', 'Var', (18, 27)) 86117 22089927 Overexpression of mutant IDH decreases the enzymatic of coexpressed TET2 and impairs hematopoietic differentiation. ('hematopoietic differentiation', 'CPA', (85, 114)) ('IDH', 'Gene', (25, 28)) ('impairs', 'NegReg', (77, 84)) ('IDH', 'Gene', '3417', (25, 28)) ('TET2', 'Gene', '54790', (68, 72)) ('mutant', 'Var', (18, 24)) ('enzymatic of', 'MPA', (43, 55)) ('decreases', 'NegReg', (29, 38)) ('TET2', 'Gene', (68, 72)) 86118 22089927 DNA hypermethylation is also a feature of IDH mutant brain tumors and leukemia, consistent with the idea that IDH mutations impair TET2 activity and thereby impair DNA demethylation. ('IDH', 'Gene', (42, 45)) ('mutations', 'Var', (114, 123)) ('brain tumors', 'Disease', (53, 65)) ('DNA demethylation', 'MPA', (164, 181)) ('IDH', 'Gene', (110, 113)) ('impair', 'NegReg', (157, 163)) ('IDH', 'Gene', '3417', (42, 45)) ('TET2', 'Gene', (131, 135)) ('leukemia', 'Phenotype', 'HP:0001909', (70, 78)) ('impair', 'NegReg', (124, 130)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) ('IDH', 'Gene', '3417', (110, 113)) ('tumors', 'Phenotype', 'HP:0002664', (59, 65)) ('mutant', 'Var', (46, 52)) ('leukemia', 'Disease', (70, 78)) ('leukemia', 'Disease', 'MESH:D007938', (70, 78)) ('TET2', 'Gene', '54790', (131, 135)) ('brain tumors', 'Phenotype', 'HP:0030692', (53, 65)) ('brain tumors', 'Disease', 'MESH:D001932', (53, 65)) 86119 22089927 As described above, inactivation of specific 2-oxoglutarate-dependent dioxygenases is suspected of contributing to transformation, especially in the context of SDH, FH, and IDH mutations. ('SDH', 'Gene', (160, 163)) ('inactivation', 'Var', (20, 32)) ('IDH', 'Gene', (173, 176)) ('mutations', 'Var', (177, 186)) ('SDH', 'Gene', '6390', (160, 163)) ('2-oxoglutarate-dependent dioxygenases', 'Enzyme', (45, 82)) ('IDH', 'Gene', '3417', (173, 176)) ('2-oxoglutarate', 'Chemical', 'MESH:D007656', (45, 59)) ('oxygen', 'Chemical', 'MESH:D010100', (72, 78)) ('contributing', 'Reg', (99, 111)) 86124 22089927 As a result, genetic or pharmacological perturbations that affect intracellular oxygen and metabolite levels might affect (indirectly) some enzymes in this family more than others. ('affect', 'Reg', (59, 65)) ('enzymes', 'Enzyme', (140, 147)) ('affect', 'Reg', (115, 121)) ('perturbations', 'Var', (40, 53)) ('oxygen', 'Chemical', 'MESH:D010100', (80, 86)) 86126 22089927 Moreover, a number of preclinical studies, describe below, support that inhibition of specific 2-oxoglutarate-dependent dioxygenases would have an antitumor effect. ('2-oxoglutarate', 'Chemical', 'MESH:D007656', (95, 109)) ('2-oxoglutarate-dependent dioxygenases', 'Enzyme', (95, 132)) ('tumor', 'Phenotype', 'HP:0002664', (151, 156)) ('tumor', 'Disease', (151, 156)) ('inhibition', 'Var', (72, 82)) ('tumor', 'Disease', 'MESH:D009369', (151, 156)) ('oxygen', 'Chemical', 'MESH:D010100', (122, 128)) 86132 22089927 Overexpression, and at times amplification, of Cyclin D1 is common in breast cancer. ('amplification', 'Var', (29, 42)) ('breast cancer', 'Disease', 'MESH:D001943', (70, 83)) ('breast cancer', 'Disease', (70, 83)) ('breast cancer', 'Phenotype', 'HP:0003002', (70, 83)) ('cancer', 'Phenotype', 'HP:0002664', (77, 83)) ('common', 'Reg', (60, 66)) ('Cyclin D1', 'Protein', (47, 56)) 86135 22089927 Indeed, loss of EglN2, but not loss of EglN1 or EglN3, decreases Cyclin D1 level in vitro and in vivo. ('EglN1', 'Gene', (39, 44)) ('EglN2', 'Gene', (16, 21)) ('decreases', 'NegReg', (55, 64)) ('EglN1', 'Gene', '54583', (39, 44)) ('EglN2', 'Gene', '112398', (16, 21)) ('loss', 'Var', (8, 12)) ('Cyclin D1 level', 'MPA', (65, 80)) 86137 22089927 Inactivation of EglN2 suppresses breast cancer proliferation in vitro and in vivo due specifically to loss of Cyclin D1 and impaired pRB phosphorylation. ('breast cancer', 'Phenotype', 'HP:0003002', (33, 46)) ('impaired', 'NegReg', (124, 132)) ('pRB', 'Gene', (133, 136)) ('suppresses', 'NegReg', (22, 32)) ('breast cancer', 'Disease', (33, 46)) ('EglN2', 'Gene', (16, 21)) ('phosphorylation', 'MPA', (137, 152)) ('rat', 'Species', '10116', (54, 57)) ('pRB', 'Gene', '5925', (133, 136)) ('EglN2', 'Gene', '112398', (16, 21)) ('Cyclin D1', 'Protein', (110, 119)) ('loss', 'NegReg', (102, 106)) ('breast cancer', 'Disease', 'MESH:D001943', (33, 46)) ('cancer', 'Phenotype', 'HP:0002664', (40, 46)) ('Inactivation', 'Var', (0, 12)) 86146 22089927 Loss of KDM2B impairs proliferation and induces senescence, at least partly through an increase in p15/Ink4b or p16/Ink4a expression. ('p15', 'Gene', (99, 102)) ('induces', 'Reg', (40, 47)) ('expression', 'MPA', (122, 132)) ('p15', 'Gene', '1030', (99, 102)) ('p16', 'Gene', (112, 115)) ('increase', 'PosReg', (87, 95)) ('Ink4b', 'Gene', (103, 108)) ('Ink4a', 'Gene', (116, 121)) ('rat', 'Species', '10116', (29, 32)) ('impairs', 'NegReg', (14, 21)) ('KDM2B', 'Gene', (8, 13)) ('p16', 'Gene', '1029', (112, 115)) ('Ink4a', 'Gene', '1029', (116, 121)) ('Ink4b', 'Gene', '1030', (103, 108)) ('proliferation', 'CPA', (22, 35)) ('Loss', 'Var', (0, 4)) ('senescence', 'CPA', (48, 58)) 86147 22089927 Similarly, depletion of KDM2B in hematopoietic progenitors significantly impairs HOXA9/MEIS1-induced leukemic transformation, at least partly through impaired self-renewal. ('KDM2B', 'Gene', (24, 29)) ('HOXA9', 'Gene', (81, 86)) ('HOXA9', 'Gene', '3205', (81, 86)) ('self-renewal', 'CPA', (159, 171)) ('MEIS1', 'Gene', '4211', (87, 92)) ('MEIS1', 'Gene', (87, 92)) ('leukemic transformation', 'Disease', (101, 124)) ('impairs', 'NegReg', (73, 80)) ('depletion', 'Var', (11, 20)) ('impaired', 'NegReg', (150, 158)) ('leukemic transformation', 'Disease', 'MESH:D007938', (101, 124)) 86152 22089927 Downeregulation of KDM3A impairs cancer cell proliferation and invasiveness. ('rat', 'Species', '10116', (52, 55)) ('Downeregulation', 'Var', (0, 15)) ('impairs cancer', 'Disease', (25, 39)) ('KDM3A', 'Gene', '55818', (19, 24)) ('cancer', 'Phenotype', 'HP:0002664', (33, 39)) ('KDM3A', 'Gene', (19, 24)) ('impairs cancer', 'Disease', 'MESH:D009422', (25, 39)) ('invasiveness', 'CPA', (63, 75)) 86153 22089927 KDM4C (JMJD2C, JHDM3, or GASC1) maps to chromosome 9p23-24, which is amplified in esophageal and breast cancers, and demethylates H3K9. ('GASC1', 'Gene', (25, 30)) ('JMJD2C', 'Gene', '23081', (7, 13)) ('esophageal and breast cancers', 'Disease', 'MESH:D004938', (82, 111)) ('cancer', 'Phenotype', 'HP:0002664', (104, 110)) ('GASC1', 'Gene', '23081', (25, 30)) ('KDM4C', 'Gene', (0, 5)) ('H3K9', 'Protein', (130, 134)) ('KDM4C', 'Gene', '23081', (0, 5)) ('breast cancers', 'Phenotype', 'HP:0003002', (97, 111)) ('breast cancer', 'Phenotype', 'HP:0003002', (97, 110)) ('demethylates', 'Var', (117, 129)) ('cancers', 'Phenotype', 'HP:0002664', (104, 111)) ('JMJD2C', 'Gene', (7, 13)) 86154 22089927 In keeping with its suspect role as an oncogene, shRNA-mediated knockdown of KDM4C inhibits cancer cell proliferation in vitro. ('rat', 'Species', '10116', (111, 114)) ('cancer', 'Disease', (92, 98)) ('KDM4C', 'Gene', '23081', (77, 82)) ('KDM4C', 'Gene', (77, 82)) ('cancer', 'Disease', 'MESH:D009369', (92, 98)) ('inhibits', 'NegReg', (83, 91)) ('knockdown', 'Var', (64, 73)) ('cancer', 'Phenotype', 'HP:0002664', (92, 98)) 86160 22089927 KDM5A (also called RBP2 or JARID1A) and KDM5B (also called PLU-1 or JARID1B) are JmjC-containing histone demethylases that recognize methylated H3K4, a mark that is usually associated with transcriptionally active chromatin. ('JARID1B', 'Gene', '10765', (68, 75)) ('methylated', 'Var', (133, 143)) ('KDM5B', 'Gene', '10765', (40, 45)) ('JARID1B', 'Gene', (68, 75)) ('PLU-1', 'Gene', (59, 64)) ('H3K4', 'Protein', (144, 148)) ('KDM5B', 'Gene', (40, 45)) ('RBP2', 'Gene', '5948', (19, 23)) ('RBP2', 'Gene', (19, 23)) ('PLU-1', 'Gene', '10765', (59, 64)) ('KDM5A', 'Gene', (0, 5)) ('KDM5A', 'Gene', '5927', (0, 5)) 86163 22089927 Inactivation of RBP2 impairs the growth of pRB-defective human cancer lines in vitro and in vivo and the development of tumors in Rb1+/- mice. ('pRB', 'Gene', (43, 46)) ('Rb1', 'Gene', '5925', (130, 133)) ('tumors', 'Disease', (120, 126)) ('growth', 'MPA', (33, 39)) ('tumors', 'Disease', 'MESH:D009369', (120, 126)) ('tumors', 'Phenotype', 'HP:0002664', (120, 126)) ('human', 'Species', '9606', (57, 62)) ('impairs', 'NegReg', (21, 28)) ('cancer', 'Phenotype', 'HP:0002664', (63, 69)) ('Rb1', 'Gene', (130, 133)) ('pRB', 'Gene', '5925', (43, 46)) ('RBP2', 'Gene', (16, 20)) ('cancer', 'Disease', 'MESH:D009369', (63, 69)) ('tumor', 'Phenotype', 'HP:0002664', (120, 125)) ('RBP2', 'Gene', '5948', (16, 20)) ('Inactivation', 'Var', (0, 12)) ('mice', 'Species', '10090', (137, 141)) ('cancer', 'Disease', (63, 69)) 86164 22089927 Similarly loss of RBP2 impairs the development of tumors driven by loss of the MEN1 tumor suppressor, which is a component of an H3K4 methylase complex. ('loss', 'Var', (10, 14)) ('impairs', 'NegReg', (23, 30)) ('tumors', 'Disease', 'MESH:D009369', (50, 56)) ('loss of the MEN1 tumor', 'Disease', (67, 89)) ('RBP2', 'Gene', (18, 22)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('RBP2', 'Gene', '5948', (18, 22)) ('loss of the MEN1 tumor', 'Disease', 'MESH:D018761', (67, 89)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('tumors', 'Phenotype', 'HP:0002664', (50, 56)) ('tumors', 'Disease', (50, 56)) 86166 22089927 This is noteworthy given the frequency with which mutations affecting histone methylases and demethylases are being identified in cancer. ('cancer', 'Disease', 'MESH:D009369', (130, 136)) ('mutations', 'Var', (50, 59)) ('cancer', 'Disease', (130, 136)) ('demethylases', 'Enzyme', (93, 105)) ('histone', 'Protein', (70, 77)) ('cancer', 'Phenotype', 'HP:0002664', (130, 136)) 86170 22089927 There are now multiple examples of mutations affecting metabolic enzymes that play a causal role in cancer. ('cancer', 'Phenotype', 'HP:0002664', (100, 106)) ('cancer', 'Disease', (100, 106)) ('cancer', 'Disease', 'MESH:D009369', (100, 106)) ('metabolic enzymes', 'Enzyme', (55, 72)) ('mutations', 'Var', (35, 44)) 86268 24621010 The aberrant expression of NeuroD1 in GP, although a very rare tumor, could complete the panel of neuroendocrine markers for the diagnosis of these tumors. ('tumor', 'Disease', (63, 68)) ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('NeuroD1', 'Gene', (27, 34)) ('tumor', 'Disease', (148, 153)) ('aberrant expression', 'Var', (4, 23)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('tumors', 'Disease', (148, 154)) ('tumors', 'Disease', 'MESH:D009369', (148, 154)) ('tumors', 'Phenotype', 'HP:0002664', (148, 154)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('tumor', 'Disease', 'MESH:D009369', (148, 153)) 86312 20154675 Germline mutations in TMEM127 confer susceptibility to pheochromocytoma Pheochromocytomas, catecholamine-secreting tumors of neural crest origin, are frequently hereditary. ('Germline mutations', 'Var', (0, 18)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (72, 89)) ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (55, 71)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (72, 89)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (72, 88)) ('TMEM127', 'Gene', (22, 29)) ('tumors', 'Disease', (115, 121)) ('tumors', 'Disease', 'MESH:D009369', (115, 121)) ('pheochromocytoma', 'Disease', (55, 71)) ('tumors', 'Phenotype', 'HP:0002664', (115, 121)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (55, 71)) ('susceptibility', 'Reg', (37, 51)) ('Pheochromocytomas', 'Disease', (72, 89)) ('catecholamine', 'Chemical', 'MESH:D002395', (91, 104)) 86315 20154675 In a cohort of 103 samples, truncating germline TMEM127 mutations were detected in one-third of familial and about 3% of sporadic-appearing tumors without a known genetic cause. ('mutations', 'Var', (56, 65)) ('tumors', 'Disease', (140, 146)) ('TMEM127', 'Gene', (48, 55)) ('tumors', 'Disease', 'MESH:D009369', (140, 146)) ('familial', 'Disease', (96, 104)) ('tumors', 'Phenotype', 'HP:0002664', (140, 146)) ('truncating', 'Var', (28, 38)) ('detected', 'Reg', (71, 79)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('TMEM127', 'Chemical', '-', (48, 55)) 86317 20154675 Pheochromocytomas with TMEM127 mutations are transcriptionally related to NF1-mutant tumors and, similarly, show hyperphosphorylation of mTOR targets. ('Pheochromocytomas', 'Disease', 'MESH:D010673', (0, 17)) ('mutations', 'Var', (31, 40)) ('NF1', 'Gene', (74, 77)) ('hyperphosphorylation', 'PosReg', (113, 133)) ('TMEM127', 'Chemical', '-', (23, 30)) ('tumors', 'Disease', 'MESH:D009369', (85, 91)) ('NF1', 'Gene', '4763', (74, 77)) ('mTOR', 'Gene', (137, 141)) ('Pheochromocytomas', 'Disease', (0, 17)) ('TMEM127', 'Gene', (23, 30)) ('mTOR', 'Gene', '2475', (137, 141)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('tumors', 'Phenotype', 'HP:0002664', (85, 91)) ('tumors', 'Disease', (85, 91)) 86327 20154675 We detected six additional TMEM127 mutations in these samples (Table 1, Suppl. ('TMEM127', 'Gene', (27, 34)) ('Suppl', 'Chemical', '-', (72, 77)) ('TMEM127', 'Chemical', '-', (27, 34)) ('mutations', 'Var', (35, 44)) 86328 20154675 Six of the seven TMEM127 variants identified were splice-site or nonsense mutations predicted to interrupt prematurely the protein reading frame (Table 1, Suppl. ('variants', 'Var', (25, 33)) ('Suppl', 'Chemical', '-', (155, 160)) ('TMEM127', 'Chemical', '-', (17, 24)) ('protein reading frame', 'MPA', (123, 144)) ('TMEM127', 'Gene', (17, 24)) 86329 20154675 In all, four TMEM127 variants (including the index case) were detected among 12 families without mutations in other pheochromocytoma susceptibility genes (Suppl.Table 2, Suppl.Fig.2A and B). ('variants', 'Var', (21, 29)) ('detected', 'Reg', (62, 70)) ('Suppl', 'Chemical', '-', (155, 160)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (116, 132)) ('Suppl', 'Chemical', '-', (170, 175)) ('pheochromocytoma', 'Disease', (116, 132)) ('TMEM127', 'Chemical', '-', (13, 20)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (116, 132)) ('TMEM127', 'Gene', (13, 20)) 86332 20154675 In all cases, mutations were detected in the corresponding germline DNA and, when available, in DNA from other relatives with pheochromocytoma (Table 1). ('mutations', 'Var', (14, 23)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (126, 142)) ('detected', 'Reg', (29, 37)) ('pheochromocytoma', 'Disease', (126, 142)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (126, 142)) 86337 20154675 In each mutant TMEM127 pheochromocytoma, the wild-type allele was lost (Suppl.Fig.2A), in agreement with a two-hit model of tumor suppressor inactivation. ('Suppl', 'Chemical', '-', (72, 77)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('TMEM127', 'Chemical', '-', (15, 22)) ('pheochromocytoma', 'Disease', (23, 39)) ('tumor', 'Disease', (124, 129)) ('mutant', 'Var', (8, 14)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (23, 39)) ('TMEM127', 'Gene', (15, 22)) ('lost', 'NegReg', (66, 70)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (23, 39)) ('tumor', 'Disease', 'MESH:D009369', (124, 129)) 86338 20154675 The only missense mutation (V90M) in this series targeted an amino acid conserved amongst putative mammalian TMEM127 orthologs. ('V90M', 'Var', (28, 32)) ('targeted', 'Reg', (49, 57)) ('V90M', 'Mutation', 'rs866188449', (28, 32)) ('TMEM127', 'Chemical', '-', (109, 116)) ('mammalian', 'Species', '9606', (99, 108)) 86340 20154675 RNA was unavailable from the two tumors that had LOH at 2q11 but no TMEM127 mutation. ('TMEM127', 'Chemical', '-', (68, 75)) ('tumor', 'Phenotype', 'HP:0002664', (33, 38)) ('TMEM127', 'Gene', (68, 75)) ('tumors', 'Disease', 'MESH:D009369', (33, 39)) ('tumors', 'Phenotype', 'HP:0002664', (33, 39)) ('mutation', 'Var', (76, 84)) ('tumors', 'Disease', (33, 39)) 86341 20154675 Clinically, patients with TMEM127 mutations developed pheochromocytomas on average at 45.3 years of age, similar to the mean age at diagnosis of sporadic pheochromocytomas (43.6-43.9y) but notably older than syndromic cases (24.9-30.2y). ('pheochromocytomas', 'Disease', (154, 171)) ('developed', 'Reg', (44, 53)) ('patients', 'Species', '9606', (12, 20)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (154, 171)) ('TMEM127', 'Chemical', '-', (26, 33)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (54, 70)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (54, 71)) ('TMEM127', 'Gene', (26, 33)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (154, 171)) ('pheochromocytomas', 'Disease', (54, 71)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (54, 71)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (154, 170)) ('mutations', 'Var', (34, 43)) 86344 20154675 Four mutation carriers from Family 1 (Table 1) remain without clinical disease at 43 to 58 years of age, but a clear picture of the actual penetrance and phenotypic spectrum of TMEM127 mutations awaits larger studies. ('mutations', 'Var', (185, 194)) ('TMEM127', 'Chemical', '-', (177, 184)) ('TMEM127', 'Gene', (177, 184)) 86345 20154675 Taken together, the data above suggest that TMEM127 gene mutations are associated with pheochromocytoma predisposition and that TMEM127 has features of a classic tumor suppressor gene. ('pheochromocytoma', 'Disease', 'MESH:D010673', (87, 103)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (87, 103)) ('tumor', 'Phenotype', 'HP:0002664', (162, 167)) ('TMEM127', 'Chemical', '-', (44, 51)) ('tumor', 'Disease', (162, 167)) ('TMEM127', 'Gene', (44, 51)) ('mutations', 'Var', (57, 66)) ('TMEM127', 'Chemical', '-', (128, 135)) ('pheochromocytoma', 'Disease', (87, 103)) ('tumor', 'Disease', 'MESH:D009369', (162, 167)) ('associated', 'Reg', (71, 81)) 86351 20154675 To begin to probe the functional consequences of TMEM127 mutations, we generated wild-type and mutant constructs tagged with Flag (either at the N- or C-terminus of the protein) or HA (N-terminus) epitopes. ('TMEM127', 'Gene', (49, 56)) ('mutations', 'Var', (57, 66)) ('TMEM127', 'Chemical', '-', (49, 56)) ('mutant', 'Var', (95, 101)) 86354 20154675 These data suggest that TMEM127-mutant proteins are not expressed, in support of a loss-of-function effect of these variants. ('variants', 'Var', (116, 124)) ('TMEM127-mutant', 'Gene', (24, 38)) ('loss-of-function', 'NegReg', (83, 99)) ('TMEM127', 'Chemical', '-', (24, 31)) ('proteins', 'Protein', (39, 47)) 86362 20154675 Profiles from eight samples carrying three distinct TMEM127 mutations, as well as additional pheochromocytomas with mutations in other pheochromocytoma susceptibility genes (8 RET-, 4 NF1-, 8 VHL- and 15 SDHB- or SDHD-mutant tumors) were analyzed by unsupervised and supervised methods (Suppl. ('NF1', 'Gene', (184, 187)) ('pheochromocytoma', 'Disease', (135, 151)) ('RET', 'Gene', '5979', (176, 179)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (93, 109)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (135, 151)) ('additional pheochromocytomas', 'Disease', 'MESH:D010673', (82, 110)) ('Suppl', 'Chemical', '-', (287, 292)) ('tumors', 'Disease', 'MESH:D009369', (225, 231)) ('pheochromocytoma', 'Disease', (93, 109)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('SDHB', 'Gene', '6390', (204, 208)) ('SDHD', 'Gene', '6392', (213, 217)) ('additional pheochromocytomas', 'Disease', (82, 110)) ('RET', 'Gene', (176, 179)) ('tumor', 'Phenotype', 'HP:0002664', (225, 230)) ('SDHB', 'Gene', (204, 208)) ('VHL', 'Gene', (192, 195)) ('tumors', 'Phenotype', 'HP:0002664', (225, 231)) ('TMEM127', 'Chemical', '-', (52, 59)) ('SDHD', 'Gene', (213, 217)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (93, 110)) ('TMEM127', 'Gene', (52, 59)) ('NF1', 'Gene', '4763', (184, 187)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (135, 151)) ('VHL', 'Gene', '7428', (192, 195)) ('mutations', 'Var', (60, 69)) ('tumors', 'Disease', (225, 231)) 86363 20154675 In this sample set we confirmed the cluster association between the TMEM127-mutant tumors and pheochromocytomas with NF1 and RET mutations, suggested by our earlier study of FP-linked tumors. ('tumors', 'Disease', 'MESH:D009369', (184, 190)) ('tumors', 'Disease', 'MESH:D009369', (83, 89)) ('NF1', 'Gene', '4763', (117, 120)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (94, 110)) ('pheochromocytomas', 'Disease', (94, 111)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (94, 111)) ('NF1', 'Gene', (117, 120)) ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('FP-linked tumors', 'Disease', (174, 190)) ('RET', 'Gene', '5979', (125, 128)) ('TMEM127', 'Chemical', '-', (68, 75)) ('tumors', 'Phenotype', 'HP:0002664', (83, 89)) ('tumors', 'Phenotype', 'HP:0002664', (184, 190)) ('FP-linked tumors', 'Disease', 'MESH:D009369', (174, 190)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (94, 111)) ('TMEM127-mutant', 'Gene', (68, 82)) ('mutations', 'Var', (129, 138)) ('tumor', 'Phenotype', 'HP:0002664', (184, 189)) ('tumors', 'Disease', (83, 89)) ('tumors', 'Disease', (184, 190)) ('RET', 'Gene', (125, 128)) 86364 20154675 The gene set enrichment analysis (GSEA) algorithm, used to identify pathways associated with the TMEM127-mutant tumor signature, revealed high statistical association with kinase receptor signals (Table 2, Suppl. ('Suppl', 'Chemical', '-', (206, 211)) ('tumor', 'Disease', 'MESH:D009369', (112, 117)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('TMEM127-mutant', 'Var', (97, 111)) ('kinase receptor signals', 'MPA', (172, 195)) ('GSEA', 'Chemical', '-', (34, 38)) ('tumor', 'Disease', (112, 117)) ('TMEM127', 'Chemical', '-', (97, 104)) ('TMEM127-mutant', 'Gene', (97, 111)) 86366 20154675 This pattern differed from the expression profiles of pheochromocytomas with mutations in VHL, SDHB or SDHD genes, which were uniquely enriched for transcripts involved in the response to hypoxia (Table 2, Suppl. ('VHL', 'Gene', '7428', (90, 93)) ('Suppl', 'Chemical', '-', (206, 211)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (54, 70)) ('hypoxia', 'Disease', (188, 195)) ('hypoxia', 'Disease', 'MESH:D000860', (188, 195)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (54, 71)) ('SDHB', 'Gene', '6390', (95, 99)) ('mutations', 'Var', (77, 86)) ('pheochromocytomas', 'Disease', (54, 71)) ('SDHB', 'Gene', (95, 99)) ('SDHD', 'Gene', '6392', (103, 107)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (54, 71)) ('VHL', 'Gene', (90, 93)) ('SDHD', 'Gene', (103, 107)) 86370 20154675 TMEM127 depletion by two distinct shRNA sequences did not increase RAS activity (Fig. ('RAS', 'CPA', (67, 70)) ('TMEM127', 'Chemical', '-', (0, 7)) ('depletion', 'Var', (8, 17)) ('TMEM127', 'Gene', (0, 7)) 86371 20154675 Likewise, AKT phosphorylation, a surrogate for PI3K activity which is enhanced by both NF1 and RET mutations, was not increased after TMEM127 knockdown (Fig. ('RET', 'Gene', (95, 98)) ('AKT', 'Gene', (10, 13)) ('NF1', 'Gene', '4763', (87, 90)) ('TMEM127', 'Chemical', '-', (134, 141)) ('TMEM127', 'Gene', (134, 141)) ('mutations', 'Var', (99, 108)) ('enhanced', 'PosReg', (70, 78)) ('RET', 'Gene', '5979', (95, 98)) ('AKT', 'Gene', '207', (10, 13)) ('knockdown', 'Var', (142, 151)) ('NF1', 'Gene', (87, 90)) 86374 20154675 This fact, combined with the kinase receptor signature displayed by TMEM127-mutant tumors, prompted us to investigate the effects of TMEM127 on mTOR signaling. ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('TMEM127-mutant', 'Gene', (68, 82)) ('tumors', 'Disease', (83, 89)) ('TMEM127', 'Chemical', '-', (68, 75)) ('tumors', 'Phenotype', 'HP:0002664', (83, 89)) ('TMEM127', 'Chemical', '-', (133, 140)) ('TMEM127-mutant', 'Var', (68, 82)) ('tumors', 'Disease', 'MESH:D009369', (83, 89)) ('mTOR', 'Gene', (144, 148)) ('mTOR', 'Gene', '2475', (144, 148)) 86378 20154675 As shown above, TMEM127 knockdown did not impact on AKT activation (Fig. ('TMEM127', 'Chemical', '-', (16, 23)) ('TMEM127', 'Gene', (16, 23)) ('AKT', 'Gene', (52, 55)) ('knockdown', 'Var', (24, 33)) ('AKT', 'Gene', '207', (52, 55)) 86381 20154675 In contrast, TMEM127 knockdown led to increased phosphorylation of 4EBP1 in various cell lines (Fig.3D). ('TMEM127', 'Chemical', '-', (13, 20)) ('phosphorylation', 'MPA', (48, 63)) ('4EBP1', 'Gene', '1978', (67, 72)) ('4EBP1', 'Gene', (67, 72)) ('knockdown', 'Var', (21, 30)) ('TMEM127', 'Gene', (13, 20)) ('increased', 'PosReg', (38, 47)) 86387 20154675 Consistent with the observation that mTORC1 is a critical regulator of cell growth and size in many species, we found that TMEM127 knockdown cells were larger (Fig. ('mTORC1', 'Gene', '382056', (37, 43)) ('knockdown', 'Var', (131, 140)) ('mTORC1', 'Gene', (37, 43)) ('TMEM127', 'Chemical', '-', (123, 130)) ('larger', 'PosReg', (152, 158)) ('TMEM127', 'Gene', (123, 130)) 86391 20154675 To determine the relevance of these findings in primary tumors, we examined lysates from TMEM127-mutant pheochromocytomas and found increased phosphorylation of S6K compared to normal adrenal medulla or tumors without a TMEM127 mutation (Fig.3H). ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('TMEM127-mutant', 'Gene', (89, 103)) ('tumors', 'Disease', (56, 62)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (104, 121)) ('pheochromocytomas', 'Disease', (104, 121)) ('TMEM127-mutant', 'Var', (89, 103)) ('tumors', 'Phenotype', 'HP:0002664', (203, 209)) ('increased', 'PosReg', (132, 141)) ('tumors', 'Disease', 'MESH:D009369', (56, 62)) ('phosphorylation', 'MPA', (142, 157)) ('TMEM127', 'Chemical', '-', (220, 227)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (104, 121)) ('tumors', 'Disease', (203, 209)) ('S6K', 'Gene', '6198', (161, 164)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (104, 120)) ('tumors', 'Disease', 'MESH:D009369', (203, 209)) ('TMEM127', 'Chemical', '-', (89, 96)) ('tumors', 'Phenotype', 'HP:0002664', (56, 62)) ('S6K', 'Gene', (161, 164)) 86404 20154675 Similar to other genetic mutations reported in these tumors, all TMEM127 gene variants were present in the germline. ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('TMEM127', 'Chemical', '-', (65, 72)) ('tumors', 'Phenotype', 'HP:0002664', (53, 59)) ('tumors', 'Disease', 'MESH:D009369', (53, 59)) ('variants', 'Var', (78, 86)) ('tumors', 'Disease', (53, 59)) ('TMEM127', 'Gene', (65, 72)) 86408 20154675 Future studies using in vivo models should determine whether mTOR activation is sufficient to explain the tumor phenotype resulting from TMEM127 mutation. ('TMEM127', 'Chemical', '-', (137, 144)) ('tumor', 'Disease', 'MESH:D009369', (106, 111)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('mTOR', 'Gene', (61, 65)) ('TMEM127', 'Gene', (137, 144)) ('mTOR', 'Gene', '2475', (61, 65)) ('tumor', 'Disease', (106, 111)) ('mutation', 'Var', (145, 153)) 86409 20154675 Finally, our results support the notion that disruptions of TMEM127 could be the underlying basis for tumors with an aberrant mTOR pathway and validate the power of hereditary tumor models to shed light on cell growth-related signals. ('hereditary tumor', 'Disease', 'MESH:D009386', (165, 181)) ('tumor', 'Phenotype', 'HP:0002664', (176, 181)) ('tumors', 'Disease', (102, 108)) ('tumors', 'Disease', 'MESH:D009369', (102, 108)) ('hereditary tumor', 'Disease', (165, 181)) ('TMEM127', 'Chemical', '-', (60, 67)) ('tumors', 'Phenotype', 'HP:0002664', (102, 108)) ('TMEM127', 'Gene', (60, 67)) ('disruptions', 'Var', (45, 56)) ('mTOR', 'Gene', (126, 130)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('mTOR', 'Gene', '2475', (126, 130)) 86417 20154675 LOH analysis was performed on 35 pheochromocytomas for which blood and tumor DNA were available: 19 samples were from six index cases and eight of their affected relatives with TMEM127 mutations (5 tumors were bilateral). ('TMEM127', 'Chemical', '-', (177, 184)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (33, 50)) ('tumor', 'Disease', 'MESH:D009369', (198, 203)) ('tumor', 'Disease', 'MESH:D009369', (71, 76)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (33, 49)) ('mutations', 'Var', (185, 194)) ('tumor', 'Phenotype', 'HP:0002664', (198, 203)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (33, 50)) ('tumors', 'Disease', (198, 204)) ('tumors', 'Disease', 'MESH:D009369', (198, 204)) ('tumor', 'Disease', (198, 203)) ('pheochromocytomas', 'Disease', (33, 50)) ('tumor', 'Disease', (71, 76)) ('tumors', 'Phenotype', 'HP:0002664', (198, 204)) 86419 20154675 Informative chromosome 2 microsatellite markers, as reported previously and/or SNPs surrounding and within the TMEM127 locus (rs2276650, rs3852673, rs3739160) were used for this analysis. ('TMEM127', 'Gene', (111, 118)) ('rs3852673', 'Var', (137, 146)) ('rs2276650', 'Mutation', 'rs2276650', (126, 135)) ('rs3739160', 'Var', (148, 157)) ('rs3739160', 'Mutation', 'rs3739160', (148, 157)) ('rs3852673', 'Mutation', 'rs3852673', (137, 146)) ('TMEM127', 'Chemical', '-', (111, 118)) ('rs2276650', 'Var', (126, 135)) 86427 20154675 cDNA from TMEM127-mutant tumors or a full-length TMEM127 clone (pCMV6-XL5-TMEM127),obtained from Origene, were used as templates to generate constructs tagged at the N-terminus and C-terminus with a Flag epitope sequence present in one of the primers. ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('tumors', 'Disease', (25, 31)) ('TMEM127', 'Chemical', '-', (74, 81)) ('TMEM127-mutant', 'Var', (10, 24)) ('tumors', 'Phenotype', 'HP:0002664', (25, 31)) ('tumors', 'Disease', 'MESH:D009369', (25, 31)) ('TMEM127', 'Chemical', '-', (49, 56)) ('TMEM127', 'Chemical', '-', (10, 17)) ('TMEM127-mutant', 'Gene', (10, 24)) 86428 20154675 The mutant constructs M158 and M99 (Table 1) were generated by mutagenizing the wild-type sequence using the QuickChange mutagenesis kit (Stratagene) or from the patient's tumor cDNA, respectively. ('tumor', 'Phenotype', 'HP:0002664', (172, 177)) ('mutagenizing', 'Var', (63, 75)) ('M99', 'Var', (31, 34)) ('tumor', 'Disease', (172, 177)) ('patient', 'Species', '9606', (162, 169)) ('tumor', 'Disease', 'MESH:D009369', (172, 177)) ('M158', 'Var', (22, 26)) 86442 20154675 Efficiency of TMEM127 knockdown was determined as above. ('knockdown', 'Var', (22, 31)) ('TMEM127', 'Chemical', '-', (14, 21)) ('TMEM127', 'Gene', (14, 21)) 86457 20154675 Stable HEK293 or A2058 TMEM127 knockdown or control (shGFP) cells were seeded at 5 x104 cells per well of a 6-well plate in normal (10%) growth medium or 1% serum. ('TMEM127', 'Chemical', '-', (23, 30)) ('A2058', 'Var', (17, 22)) ('HEK293', 'CellLine', 'CVCL:0045', (7, 13)) ('TMEM127', 'Gene', (23, 30)) ('A2058', 'CellLine', 'CVCL:1059', (17, 22)) 86459 20154675 Proliferation rates of 293E and HEK293T cells with TMEM127 knockdown or overexpression and respective control cells were also determined in the presence or absence of serum using a method based on DNA binding to a fluorescent reagent (Cyquant-NF, Invitrogen). ('HEK293T', 'CellLine', 'CVCL:0063', (32, 39)) ('binding', 'Interaction', (201, 208)) ('knockdown', 'Var', (59, 68)) ('TMEM127', 'Chemical', '-', (51, 58)) ('293E', 'CellLine', 'CVCL:6974', (23, 27)) ('TMEM127', 'Gene', (51, 58)) 86460 20154675 Stable TMEM127 knockdown on HEK293 and A2058 and their respective control cell lines were fixed in ethanol, stained with propidium iodide and analyzed by forward-scattering FACS to determine cell size. ('A2058', 'CellLine', 'CVCL:1059', (39, 44)) ('propidium iodide', 'Chemical', 'MESH:D011419', (121, 137)) ('knockdown', 'Var', (15, 24)) ('HEK293', 'CellLine', 'CVCL:0045', (28, 34)) ('TMEM127', 'Chemical', '-', (7, 14)) ('ethanol', 'Chemical', 'MESH:D000431', (99, 106)) ('TMEM127', 'Gene', (7, 14)) 86465 20154675 Golgi staining was additionally performed using the Organelle Lights-Golgi-RFP (Invitrogen) in which the Golgi component N-acetylgalactosaminyltransferase-2 is fused to red fluorescence protein (RFP) in a baculovirus-based construct and transduced into target cells (293E stably expressing HA-TMEM127 or an empty control vector), following the manufacturer's instructions. ('HA-TMEM127', 'Var', (290, 300)) ('TMEM127', 'Chemical', '-', (293, 300)) ('N-acetylgalactosaminyltransferase-2', 'Gene', (121, 156)) ('N-acetylgalactosaminyltransferase-2', 'Gene', '79586', (121, 156)) ('293E', 'CellLine', 'CVCL:6974', (267, 271)) 86480 20154675 mTOR and TMEM127 colocalization was performed by cotransfection of a myc-tagged mTOR construct (see above, "Constructs") and HA-TMEM127, Flag-TMEM127 or GFP-TMEM127 in HEK293T cells. ('mTOR', 'Gene', (80, 84)) ('myc', 'Gene', (69, 72)) ('mTOR', 'Gene', '2475', (80, 84)) ('TMEM127', 'Chemical', '-', (157, 164)) ('TMEM127', 'Chemical', '-', (142, 149)) ('HEK293T', 'CellLine', 'CVCL:0063', (168, 175)) ('TMEM127', 'Chemical', '-', (128, 135)) ('myc', 'Gene', '4609', (69, 72)) ('GFP-TMEM127', 'Var', (153, 164)) ('HA-TMEM127', 'Var', (125, 135)) ('mTOR', 'Gene', '2475', (0, 4)) ('mTOR', 'Gene', (0, 4)) ('TMEM127', 'Chemical', '-', (9, 16)) 86528 34036122 The presence of gremlin mutations could not be confirmed because of the unavailability of specific genetic tests in Indonesia. ('mutations', 'Var', (24, 33)) ('gremlin', 'Gene', '26585', (16, 23)) ('gremlin', 'Gene', (16, 23)) ('Indonesia', 'Disease', (116, 125)) 86541 34036122 The results of pathological examination in this case reinforced the diagnosis of pheochromocytoma, indicating the presence of tumor cells in a typical alveolar or nesting "Zellballen" pattern, moderate-to-marked pleomorphism, coarse chromatin, and ampophilic-to-basophilic granules. ('pheochromocytoma', 'Disease', (81, 97)) ('tumor', 'Disease', 'MESH:D009369', (126, 131)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (81, 97)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (81, 97)) ('moderate-to-marked pleomorphism', 'Var', (193, 224)) ('tumor', 'Disease', (126, 131)) 86550 34036122 The PASS score in our patient was 6, which was caused due to high cellularity [2], cellular monotony [2], profound nuclear pleomorphism [1], and hyperchromasia [1]. ('high cellularity', 'Var', (61, 77)) ('hyperchromasia', 'Disease', 'None', (145, 159)) ('profound nuclear pleomorphism', 'Var', (106, 135)) ('cellular monotony', 'Disease', (83, 100)) ('hyperchromasia', 'Disease', (145, 159)) ('patient', 'Species', '9606', (22, 29)) 86620 33382876 From the most common classification variables it was found that C18:2 and C18:1 were most prominently used metabolites while ornithine/arginine and spermidine/putrescine were seen as the most prominent metabolite ratios for classifying different patient groups, such as using all patients, male subset, female subset, age >=50 and <50 years. ('C18:1', 'Var', (74, 79)) ('patient', 'Species', '9606', (246, 253)) ('patient', 'Species', '9606', (280, 287)) ('age', 'Gene', (318, 321)) ('patients', 'Species', '9606', (280, 288)) ('spermidine', 'Chemical', 'MESH:D013095', (148, 158)) ('age', 'Gene', '5973', (318, 321)) ('putrescine', 'Chemical', 'MESH:D011700', (159, 169)) ('arginine', 'Chemical', 'MESH:D001120', (135, 143)) ('ornithine', 'Chemical', 'MESH:D009952', (125, 134)) 86627 33382876 In the comparison of PHT with each singular EHT (CS, PA, PPGL) 4 metabolites were repeatedly identified by CA (C18:1, C18:2, ornithine, spermidine), as well as by MLA. ('ornithine', 'MPA', (125, 134)) ('PA', 'Phenotype', 'HP:0011736', (53, 55)) ('PPGL', 'Chemical', '-', (57, 61)) ('spermidine', 'Chemical', 'MESH:D013095', (136, 146)) ('MLA', 'Chemical', '-', (163, 166)) ('CS', 'Gene', '1431', (49, 51)) ('CS', 'Phenotype', 'HP:0003118', (49, 51)) ('C18:2', 'Var', (118, 123)) ('ornithine', 'Chemical', 'MESH:D009952', (125, 134)) ('EHT', 'Chemical', '-', (44, 47)) 86628 33382876 Using MLA in addition to these 4 metabolites another 4 metabolites (C9, aspartate, lysoPC a C24:0, SM C18:1) were repeatedly identified in each singular comparison (Tables 2 and 4). ('aspartate', 'MPA', (72, 81)) ('lysoPC', 'Var', (83, 89)) ('MLA', 'Chemical', '-', (6, 9)) ('aspartate', 'Chemical', 'MESH:D001224', (72, 81)) 86644 33382876 In particular, higher levels of long-chain acylcarnitines (C16, C16:1, C18:1, C18:2) were a consistent finding distinguishing PHT and EHT. ('EHT', 'Chemical', '-', (134, 137)) ('C18:1', 'Var', (71, 76)) ('higher', 'PosReg', (15, 21)) ('C16', 'Var', (59, 62)) ('acylcarnitines', 'Chemical', 'MESH:C116917', (43, 57)) ('C18:2', 'Var', (78, 83)) ('PHT', 'Disease', (126, 129)) ('long-chain acylcarnitines', 'MPA', (32, 57)) ('C16:1', 'Var', (64, 69)) 86657 33382876 It is of interest that higher glutamate levels have been associated with neuropsychological disorders such as major depression being one of the hallmarks of patients with CS, but also commonly observed in patients with PA. Higher levels of lysophosphatidylcholins (lysoPC a C16:0, lysoPC a C20:4, lyspPC a 24:0) and sphingomyelin (SM C18:1) were observed in patients with EHT compared with PHT. ('patients', 'Species', '9606', (205, 213)) ('patients', 'Species', '9606', (157, 165)) ('EHT', 'Disease', (372, 375)) ('CS', 'Gene', '1431', (171, 173)) ('sphingomyelin', 'Chemical', 'MESH:D013109', (316, 329)) ('lysoPC a C16:0', 'Var', (265, 279)) ('higher', 'PosReg', (23, 29)) ('sphingomyelin', 'MPA', (316, 329)) ('depression', 'Disease', 'MESH:D000275', (116, 126)) ('lyspPC a 24:0', 'Var', (297, 310)) ('glutamate', 'Chemical', 'MESH:D018698', (30, 39)) ('CS', 'Phenotype', 'HP:0003118', (171, 173)) ('glutamate levels', 'MPA', (30, 46)) ('lyspPC', 'Chemical', '-', (297, 303)) ('Higher', 'PosReg', (223, 229)) ('depression', 'Phenotype', 'HP:0000716', (116, 126)) ('lysophosphatidylcholins', 'MPA', (240, 263)) ('PA', 'Phenotype', 'HP:0011736', (219, 221)) ('patients', 'Species', '9606', (358, 366)) ('lysophosphatidylcholins', 'Chemical', '-', (240, 263)) ('EHT', 'Chemical', '-', (372, 375)) ('depression', 'Disease', (116, 126)) 86696 33397038 Furthermore, PRA was found to reduce the risks of surgical complications, including intestinal injury and postoperative adhesions, while entering the peritoneal cavity. ('intestinal injury', 'Disease', (84, 101)) ('PRA', 'Var', (13, 16)) ('reduce', 'NegReg', (30, 36)) ('postoperative adhesions', 'CPA', (106, 129)) ('intestinal injury', 'Disease', 'MESH:D007410', (84, 101)) 86755 25540324 Recurrent epimutation of SDHC in gastrointestinal stromal tumors Succinate dehydrogenase (SDH) is a conserved effector of cellular metabolism and energy production, and loss of SDH function is a driver mechanism in several cancers. ('SDHC', 'Gene', '6391', (25, 29)) ('SDH', 'Gene', (90, 93)) ('SDH', 'Gene', (177, 180)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (33, 63)) ('cancer', 'Phenotype', 'HP:0002664', (223, 229)) ('SDH', 'Gene', (25, 28)) ('gastrointestinal stromal tumors', 'Disease', (33, 64)) ('Succinate dehydrogenase', 'Gene', (65, 88)) ('cancers', 'Phenotype', 'HP:0002664', (223, 230)) ('cancers', 'Disease', (223, 230)) ('Succinate dehydrogenase', 'Gene', '6390', (65, 88)) ('tumors', 'Phenotype', 'HP:0002664', (58, 64)) ('SDHC', 'Gene', (25, 29)) ('tumor', 'Phenotype', 'HP:0002664', (58, 63)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (33, 64)) ('SDH', 'Gene', '6390', (90, 93)) ('SDH', 'Gene', '6390', (177, 180)) ('loss', 'Var', (169, 173)) ('cancers', 'Disease', 'MESH:D009369', (223, 230)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (33, 64)) ('epimutation', 'Var', (10, 21)) ('SDH', 'Gene', '6390', (25, 28)) 86756 25540324 SDH-deficient gastrointestinal stromal tumors (dSDH GISTs) collectively manifest similar phenotypes, including hypermethylated epigenomic signatures, tendency to occur in pediatric patients, and lack of KIT/PDGFRA mutations. ('KIT', 'Gene', (203, 206)) ('hypermethylated', 'Var', (111, 126)) ('SDH', 'Gene', '6390', (48, 51)) ('SDH', 'Gene', (0, 3)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (14, 44)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('SDH', 'Gene', (48, 51)) ('SDH-deficient gastrointestinal stromal tumors', 'Disease', (0, 45)) ('PDGFRA', 'Gene', (207, 213)) ('PDGFRA', 'Gene', '5156', (207, 213)) ('patients', 'Species', '9606', (181, 189)) ('GIST', 'Phenotype', 'HP:0100723', (52, 56)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (14, 45)) ('KIT', 'Gene', '3815', (203, 206)) ('SDH-deficient gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (0, 45)) ('tumors', 'Phenotype', 'HP:0002664', (39, 45)) ('SDH', 'Gene', '6390', (0, 3)) 86757 25540324 dSDH GISTs often harbor deleterious mutations in SDH subunit genes (SDHA, SDHB, SDHC, and SDHD, termed SDHx), but some are SDHx wild type (WT). ('SDHD', 'Gene', '6392', (90, 94)) ('SDH', 'Gene', '6390', (49, 52)) ('SDH', 'Gene', (123, 126)) ('SDH', 'Gene', (68, 71)) ('SDH', 'Gene', '6390', (1, 4)) ('SDH', 'Gene', (90, 93)) ('SDH', 'Gene', (74, 77)) ('SDHD', 'Gene', (90, 94)) ('GIST', 'Phenotype', 'HP:0100723', (5, 9)) ('SDH', 'Gene', '6390', (103, 106)) ('SDH', 'Gene', (49, 52)) ('SDH', 'Gene', '6390', (80, 83)) ('SDHC', 'Gene', '6391', (80, 84)) ('SDH', 'Gene', (1, 4)) ('SDHB', 'Gene', '6390', (74, 78)) ('SDH', 'Gene', (103, 106)) ('SDH', 'Gene', '6390', (123, 126)) ('SDH', 'Gene', (80, 83)) ('SDH', 'Gene', '6390', (68, 71)) ('SDHA', 'Gene', (68, 72)) ('SDH', 'Gene', '6390', (90, 93)) ('SDHA', 'Gene', '6389', (68, 72)) ('SDHB', 'Gene', (74, 78)) ('mutations', 'Var', (36, 45)) ('SDHC', 'Gene', (80, 84)) ('SDH', 'Gene', '6390', (74, 77)) 86759 25540324 Genome-wide DNA methylation and expression profiling exposed SDHC promoter-specific CpG island hypermethylation and gene silencing in SDHx-WT dSDH GISTs [15 of 16 cases (94%)]. ('SDHx-WT dSDH GISTs', 'Disease', (134, 152)) ('gene', 'Var', (116, 120)) ('SDHC', 'Gene', (61, 65)) ('SDHx-WT dSDH GISTs', 'Disease', 'MESH:C536751', (134, 152)) ('SDHC', 'Gene', '6391', (61, 65)) ('GIST', 'Phenotype', 'HP:0100723', (147, 151)) ('hypermethylation', 'Var', (95, 111)) 86763 25540324 More than 2000 benign and tumor reference tissues, including stem cells and malignancies with a hypermethylator epigenotype, exhibit solely a non-epimutant SDHC promoter. ('malignancies', 'Disease', (76, 88)) ('hypermethylator', 'Var', (96, 111)) ('tumor', 'Disease', 'MESH:D009369', (26, 31)) ('malignancies', 'Disease', 'MESH:D009369', (76, 88)) ('SDHC', 'Gene', (156, 160)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('tumor', 'Disease', (26, 31)) ('SDHC', 'Gene', '6391', (156, 160)) 86765 25540324 The discovery of SDHC epimutation provides a unifying explanation for the pathogenesis of dSDH GIST, whereby loss of SDH function stems from either SDHx mutation or SDHC epimutation. ('SDH', 'Gene', (91, 94)) ('SDHC', 'Gene', (165, 169)) ('GIST', 'Phenotype', 'HP:0100723', (95, 99)) ('SDHC', 'Gene', '6391', (17, 21)) ('SDH', 'Gene', (17, 20)) ('epimutation', 'Var', (22, 33)) ('mutation', 'Var', (153, 161)) ('SDH', 'Gene', '6390', (165, 168)) ('SDHC', 'Gene', (17, 21)) ('SDH', 'Gene', '6390', (117, 120)) ('SDHC', 'Gene', '6391', (165, 169)) ('SDH', 'Gene', '6390', (148, 151)) ('SDH', 'Gene', '6390', (91, 94)) ('epimutation', 'Var', (170, 181)) ('SDH', 'Gene', (165, 168)) ('loss', 'NegReg', (109, 113)) ('SDH', 'Gene', (117, 120)) ('SDH', 'Gene', (148, 151)) ('SDH', 'Gene', '6390', (17, 20)) 86767 25540324 Mutational inactivation of SDH is a tumor mechanism in several tumors including gastrointestinal stromal tumor (GIST), the most common mesenchymal tumor of the gastrointestinal tract. ('mesenchymal tumor', 'Disease', 'MESH:C535700', (135, 152)) ('tumors', 'Phenotype', 'HP:0002664', (63, 69)) ('SDH', 'Gene', (27, 30)) ('tumor', 'Disease', (36, 41)) ('tumor', 'Disease', (147, 152)) ('mesenchymal tumor', 'Disease', (135, 152)) ('Mutational inactivation', 'Var', (0, 23)) ('tumor', 'Disease', 'MESH:D009369', (36, 41)) ('tumors', 'Disease', (63, 69)) ('tumor', 'Disease', 'MESH:D009369', (147, 152)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (80, 110)) ('tumor', 'Disease', (105, 110)) ('tumor', 'Disease', (63, 68)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (80, 110)) ('tumor', 'Disease', 'MESH:D009369', (105, 110)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('tumors', 'Disease', 'MESH:D009369', (63, 69)) ('tumor', 'Phenotype', 'HP:0002664', (36, 41)) ('SDH', 'Gene', '6390', (27, 30)) ('gastrointestinal stromal tumor', 'Disease', (80, 110)) ('tumor', 'Phenotype', 'HP:0002664', (147, 152)) ('GIST', 'Phenotype', 'HP:0100723', (112, 116)) ('tumor of the gastrointestinal tract', 'Phenotype', 'HP:0007378', (147, 182)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) 86769 25540324 Several studies link disabled SDH function to tumorigenesis through pathologic activation of an otherwise physiologic hypoxia-inducible pathway of angiogenesis, glycolysis, and cell proliferation, as well as through nuclear epigenomic remodeling due to deranged Krebs cycle function. ('SDH', 'Gene', (30, 33)) ('function', 'Var', (34, 42)) ('tumor', 'Phenotype', 'HP:0002664', (46, 51)) ('hypoxia', 'Disease', 'MESH:D000860', (118, 125)) ('deranged Krebs cycle function', 'Phenotype', 'HP:0000816', (253, 282)) ('tumor', 'Disease', (46, 51)) ('disabled', 'Var', (21, 29)) ('glycolysis', 'MPA', (161, 171)) ('Krebs', 'Chemical', '-', (262, 267)) ('activation', 'PosReg', (79, 89)) ('SDH', 'Gene', '6390', (30, 33)) ('hypoxia', 'Disease', (118, 125)) ('cell proliferation', 'CPA', (177, 195)) ('tumor', 'Disease', 'MESH:D009369', (46, 51)) 86774 25540324 Disruption of oxidative demethylation of 5mC due to inhibitory metabolites that accumulate in tumors with mutations in core metabolic pathways may be a mechanism of global DNA hypermethylation common to dSDH GIST and paraganglioma and to isocitrate dehydrogenase (IDH)- and fumarate hydratase (FH)-mutant tumors of mesenchymal, epithelial, glial, myeloid, and renal lineages. ('isocitrate dehydrogenase', 'Gene', (238, 262)) ('IDH', 'Gene', (264, 267)) ('tumors', 'Phenotype', 'HP:0002664', (94, 100)) ('-mutant', 'Var', (297, 304)) ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('fumarate hydratase', 'Gene', (274, 292)) ('IDH', 'Gene', '3417', (264, 267)) ('paraganglioma', 'Disease', (217, 230)) ('tumors', 'Disease', (94, 100)) ('paraganglioma', 'Disease', 'MESH:D010235', (217, 230)) ('tumors', 'Phenotype', 'HP:0002664', (305, 311)) ('isocitrate dehydrogenase', 'Gene', '3417', (238, 262)) ('tumor', 'Phenotype', 'HP:0002664', (305, 310)) ('SDH', 'Gene', '6390', (204, 207)) ('tumors', 'Disease', 'MESH:D009369', (94, 100)) ('5mC', 'Chemical', 'MESH:D044503', (41, 44)) ('GIST', 'Phenotype', 'HP:0100723', (208, 212)) ('tumors', 'Disease', (305, 311)) ('fumarate hydratase', 'Gene', '2271', (274, 292)) ('paraganglioma', 'Phenotype', 'HP:0002668', (217, 230)) ('mutations', 'Var', (106, 115)) ('FH', 'Gene', '2271', (294, 296)) ('SDH', 'Gene', (204, 207)) ('tumors', 'Disease', 'MESH:D009369', (305, 311)) 86775 25540324 Along with the distinctive genome-wide CpG hypermethylation in dSDH GIST relative to KIT mutants, these tumors also exhibit elevated IGF1R gene expression, which is of potential therapeutic interest. ('SDH', 'Gene', (64, 67)) ('GIST', 'Phenotype', 'HP:0100723', (68, 72)) ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('IGF1R', 'Gene', (133, 138)) ('expression', 'MPA', (144, 154)) ('KIT', 'Gene', '3815', (85, 88)) ('tumors', 'Phenotype', 'HP:0002664', (104, 110)) ('tumors', 'Disease', (104, 110)) ('KIT', 'Gene', (85, 88)) ('IGF1R', 'Gene', '3480', (133, 138)) ('tumors', 'Disease', 'MESH:D009369', (104, 110)) ('SDH', 'Gene', '6390', (64, 67)) ('hypermethylation', 'Var', (43, 59)) ('elevated', 'PosReg', (124, 132)) ('elevated IGF1R', 'Phenotype', 'HP:0030269', (124, 138)) 86776 25540324 Biallelic mutation of one of the four SDH component genes:SDHA, SDHB, SDHC, or SDHD (termed SDHx):often explains SDH deactivation in dSDH GIST, because loss of function of any one of the four subunits is sufficient to disrupt the complex, evidenced by an SDHB-negative immunophenotype in histologic tumor tissue sections [reviewed in ]. ('deactivation', 'NegReg', (117, 129)) ('SDH', 'Gene', (92, 95)) ('SDH', 'Gene', (58, 61)) ('SDHA', 'Gene', (58, 62)) ('SDHC', 'Gene', (70, 74)) ('SDHB', 'Gene', (64, 68)) ('SDH', 'Gene', '6390', (64, 67)) ('SDHD', 'Gene', '6392', (79, 83)) ('tumor', 'Phenotype', 'HP:0002664', (299, 304)) ('SDH', 'Gene', (113, 116)) ('SDHA', 'Gene', '6389', (58, 62)) ('SDH', 'Gene', '6390', (79, 82)) ('SDH', 'Gene', (255, 258)) ('GIST', 'Phenotype', 'HP:0100723', (138, 142)) ('SDHD', 'Gene', (79, 83)) ('SDH', 'Gene', '6390', (134, 137)) ('SDH', 'Gene', '6390', (38, 41)) ('SDH', 'Gene', (64, 67)) ('SDH', 'Gene', '6390', (70, 73)) ('SDHB', 'Gene', '6390', (255, 259)) ('SDH', 'Gene', (79, 82)) ('SDHC', 'Gene', '6391', (70, 74)) ('SDH', 'Gene', '6390', (92, 95)) ('SDH', 'Gene', '6390', (58, 61)) ('tumor', 'Disease', (299, 304)) ('SDHB', 'Gene', '6390', (64, 68)) ('SDH', 'Gene', (134, 137)) ('loss', 'Var', (152, 156)) ('SDH', 'Gene', (38, 41)) ('SDH', 'Gene', '6390', (113, 116)) ('SDH', 'Gene', (70, 73)) ('tumor', 'Disease', 'MESH:D009369', (299, 304)) ('SDHB', 'Gene', (255, 259)) ('SDH', 'Gene', '6390', (255, 258)) 86781 25540324 Some examples of these include MLH1 and MSH2 silencing via promoter hypermethylation in Lynch syndrome and FMR1 promoter hypermethylation and silencing in fragile X syndrome. ('silencing', 'Var', (142, 151)) ('MSH2', 'Gene', '4436', (40, 44)) ('Lynch syndrome', 'Disease', (88, 102)) ('FMR1', 'Gene', '2332', (107, 111)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (88, 102)) ('FMR1', 'Gene', (107, 111)) ('promoter hypermethylation', 'Var', (112, 137)) ('MLH1', 'Gene', '4292', (31, 35)) ('MLH1', 'Gene', (31, 35)) ('promoter hypermethylation', 'Var', (59, 84)) ('fragile X syndrome', 'Disease', (155, 173)) ('fragile X syndrome', 'Disease', 'MESH:D005600', (155, 173)) ('silencing', 'NegReg', (45, 54)) ('MSH2', 'Gene', (40, 44)) 86782 25540324 In these instances, expression and promoter DNA methylation of the causative gene are abnormal despite a lack of protein-altering mutations; moreover, these patients often exhibit epimutation in their normal somatic tissues. ('exhibit', 'Reg', (172, 179)) ('expression', 'MPA', (20, 30)) ('epimutation', 'Var', (180, 191)) ('patients', 'Species', '9606', (157, 165)) ('promoter DNA methylation', 'MPA', (35, 59)) 86783 25540324 In the current study, we examined the genomes, methylomes, gene expression profiles, and SDHx mutation status of a cohort of 59 dSDH GIST patients. ('SDH', 'Gene', (89, 92)) ('patients', 'Species', '9606', (138, 146)) ('SDH', 'Gene', (129, 132)) ('GIST', 'Phenotype', 'HP:0100723', (133, 137)) ('SDH', 'Gene', '6390', (129, 132)) ('SDH', 'Gene', '6390', (89, 92)) ('mutation', 'Var', (94, 102)) 86785 25540324 These analyses uncovered a recurrent gene silencing epimutation highly specific to SDHx-WT dSDH GIST, encompassing a subset of cases with manifestations of Carney triad. ('gene silencing epimutation', 'Var', (37, 63)) ('SDHx-WT dSDH GIST', 'Disease', 'MESH:D046152', (83, 100)) ('GIST', 'Phenotype', 'HP:0100723', (96, 100)) ('Carney triad', 'Disease', (156, 168)) ('SDHx-WT dSDH GIST', 'Disease', (83, 100)) 86794 25540324 Fifty-nine dSDH GIST cases were tested for SDHx coding sequence mutations by OncoVar-GIST, a custom-capture single-molecule next-generation DNA sequencing assay (NGS), performed in a Clinical Laboratory Improvement Amendments (CLIA)-certified laboratory, that sequences the complete coding sequence of SDHA, SDHB, SDHC, and SDHD from FFPE tissue after tumor dissection by a pathologist. ('SDHC', 'Gene', '6391', (314, 318)) ('GIST', 'Phenotype', 'HP:0100723', (16, 20)) ('SDHB', 'Gene', '6390', (308, 312)) ('SDH', 'Gene', (314, 317)) ('SDH', 'Gene', (43, 46)) ('SDH', 'Gene', '6390', (324, 327)) ('SDH', 'Gene', '6390', (302, 305)) ('GIST', 'Phenotype', 'HP:0100723', (85, 89)) ('SDHB', 'Gene', (308, 312)) ('SDHA', 'Gene', (302, 306)) ('tumor', 'Disease', (352, 357)) ('SDHC', 'Gene', (314, 318)) ('mutations', 'Var', (64, 73)) ('SDH', 'Gene', '6390', (308, 311)) ('SDHD', 'Gene', '6392', (324, 328)) ('SDHA', 'Gene', '6389', (302, 306)) ('tumor', 'Disease', 'MESH:D009369', (352, 357)) ('SDH', 'Gene', '6390', (12, 15)) ('SDH', 'Gene', (324, 327)) ('SDH', 'Gene', (302, 305)) ('SDH', 'Gene', (308, 311)) ('SDHD', 'Gene', (324, 328)) ('tumor', 'Phenotype', 'HP:0002664', (352, 357)) ('SDH', 'Gene', '6390', (314, 317)) ('SDH', 'Gene', '6390', (43, 46)) ('SDH', 'Gene', (12, 15)) 86797 25540324 Forty tumors were positive for SDHx coding sequence mutation by the OncoVar-GIST sequencing assay, and three additional tumors had intragenic deletions by copy number and/or genotyping microarray (Table 1). ('tumors', 'Disease', (120, 126)) ('tumors', 'Disease', 'MESH:D009369', (120, 126)) ('tumors', 'Phenotype', 'HP:0002664', (120, 126)) ('SDH', 'Gene', '6390', (31, 34)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('positive', 'Reg', (18, 26)) ('deletions', 'Var', (142, 151)) ('tumors', 'Disease', (6, 12)) ('SDH', 'Gene', (31, 34)) ('tumors', 'Disease', 'MESH:D009369', (6, 12)) ('mutation', 'Var', (52, 60)) ('tumor', 'Phenotype', 'HP:0002664', (120, 125)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('GIST', 'Phenotype', 'HP:0100723', (76, 80)) 86800 25540324 The eight instances of SDHx-mutant GIST without detection of a second hit were SDHA mutants (Table 1). ('SDH', 'Gene', '6390', (79, 82)) ('SDH', 'Gene', (23, 26)) ('SDHA', 'Gene', (79, 83)) ('mutants', 'Var', (84, 91)) ('SDH', 'Gene', (79, 82)) ('SDH', 'Gene', '6390', (23, 26)) ('GIST', 'Phenotype', 'HP:0100723', (35, 39)) ('SDHA', 'Gene', '6389', (79, 83)) 86809 25540324 Outside the SDHC promoter, there was no significant (q < 0.05) CpG target hypermethylation elsewhere in the SDHx-WT GIST genome (Fig. ('SDH', 'Gene', '6390', (108, 111)) ('GIST', 'Phenotype', 'HP:0100723', (116, 120)) ('SDH', 'Gene', '6390', (12, 15)) ('hypermethylation', 'Var', (74, 90)) ('SDH', 'Gene', (108, 111)) ('SDHC', 'Gene', (12, 16)) ('SDH', 'Gene', (12, 15)) ('SDHC', 'Gene', '6391', (12, 16)) 86823 25540324 Thus, we performed deep sequencing of 12 SDHCme GISTs for mutations within a 130-kbp window encompassing SDHC and including its promoter and flanking genomic sequence. ('SDHC', 'Gene', '6391', (105, 109)) ('mutations', 'Var', (58, 67)) ('SDHC', 'Gene', (41, 45)) ('SDHC', 'Gene', '6391', (41, 45)) ('GIST', 'Phenotype', 'HP:0100723', (48, 52)) ('SDHC', 'Gene', (105, 109)) 86826 25540324 Thus, on the basis of the absence of identified genomic aberration, SDHC promoter methylation in GIST is consistent with primary epimutation, although future discovery of a molecular mechanism may favor reclassification as secondary epimutation. ('methylation', 'Var', (82, 93)) ('GIST', 'Phenotype', 'HP:0100723', (97, 101)) ('SDHC', 'Gene', '6391', (68, 72)) ('SDHC', 'Gene', (68, 72)) 86827 25540324 No SDHA (n = 22), SDHB (n = 12), or SDHD (n = 1) mutants had SDHCme (fig. ('SDHB', 'Gene', (18, 22)) ('SDHC', 'Gene', (61, 65)) ('SDHD', 'Gene', (36, 40)) ('SDHD', 'Gene', '6392', (36, 40)) ('mutants', 'Var', (49, 56)) ('SDHA', 'Gene', (3, 7)) ('SDHC', 'Gene', '6391', (61, 65)) ('SDHA', 'Gene', '6389', (3, 7)) ('SDHB', 'Gene', '6390', (18, 22)) 86829 25540324 In sum, 58 of 59 (98%) dSDH GISTs demonstrated SDHx mutation, SDHC promoter hypermethylation, or SDHC mutation plus SDHCme as a second hit, whereas one tumor remained SDHx-WT and SDHCme-negative (Table 1). ('SDH', 'Gene', (116, 119)) ('SDHC', 'Gene', (62, 66)) ('SDH', 'Gene', (179, 182)) ('SDH', 'Gene', '6390', (97, 100)) ('mutation', 'Var', (52, 60)) ('SDH', 'Gene', '6390', (167, 170)) ('SDHC', 'Gene', '6391', (97, 101)) ('SDHC', 'Gene', (116, 120)) ('SDH', 'Gene', '6390', (62, 65)) ('SDH', 'Gene', '6390', (24, 27)) ('SDHC', 'Gene', (179, 183)) ('tumor', 'Disease', (152, 157)) ('SDH', 'Gene', (97, 100)) ('GIST', 'Phenotype', 'HP:0100723', (28, 32)) ('SDH', 'Gene', '6390', (47, 50)) ('tumor', 'Disease', 'MESH:D009369', (152, 157)) ('SDH', 'Gene', (167, 170)) ('SDH', 'Gene', (62, 65)) ('SDHC', 'Gene', (97, 101)) ('SDHC', 'Gene', '6391', (62, 66)) ('SDH', 'Gene', (24, 27)) ('SDH', 'Gene', '6390', (116, 119)) ('SDH', 'Gene', '6390', (179, 182)) ('SDHC', 'Gene', '6391', (116, 120)) ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('SDH', 'Gene', (47, 50)) ('SDHC', 'Gene', '6391', (179, 183)) ('hypermethylation', 'Var', (76, 92)) 86833 25540324 S5), but the tumors from two patients designated Carney triad (due to co-occurrence of dSDH GIST and pulmonary chondroma) were found to harbor SDHA mutation and negative SDHCme (Table 1, Fig. ('pulmonary chondroma', 'Phenotype', 'HP:0031474', (101, 120)) ('SDH', 'Gene', '6390', (88, 91)) ('SDH', 'Gene', '6390', (143, 146)) ('SDHA', 'Gene', (143, 147)) ('SDH', 'Gene', (170, 173)) ('GIST', 'Phenotype', 'HP:0100723', (92, 96)) ('patients', 'Species', '9606', (29, 37)) ('tumors', 'Phenotype', 'HP:0002664', (13, 19)) ('SDHA', 'Gene', '6389', (143, 147)) ('SDHC', 'Gene', (170, 174)) ('tumor', 'Phenotype', 'HP:0002664', (13, 18)) ('SDH', 'Gene', (88, 91)) ('tumors', 'Disease', (13, 19)) ('pulmonary chondroma', 'Disease', 'MESH:D002812', (101, 120)) ('pulmonary chondroma', 'Disease', (101, 120)) ('SDH', 'Gene', (143, 146)) ('tumors', 'Disease', 'MESH:D009369', (13, 19)) ('harbor', 'Reg', (136, 142)) ('SDH', 'Gene', '6390', (170, 173)) ('mutation', 'Var', (148, 156)) ('SDHC', 'Gene', '6391', (170, 174)) 86835 25540324 Although some investigators may reclassify patients with GIST and pulmonary chondroma as not having Carney triad owing to the finding of SDHA mutation, others may favor keeping the Carney triad diagnosis on the basis of anatomical-pathology criteria. ('pulmonary chondroma', 'Disease', (66, 85)) ('Carney triad', 'Disease', (181, 193)) ('GIST', 'Phenotype', 'HP:0100723', (57, 61)) ('patients', 'Species', '9606', (43, 51)) ('pulmonary chondroma', 'Phenotype', 'HP:0031474', (66, 85)) ('pulmonary chondroma', 'Disease', 'MESH:D002812', (66, 85)) ('SDHA', 'Gene', '6389', (137, 141)) ('mutation', 'Var', (142, 150)) ('SDHA', 'Gene', (137, 141)) 86836 25540324 Why Carney triad shows a greater correlation with SDHC epimutation than SDHx mutation (P = 0.0025) and whether the Carney triad definition should change from purely morphologic criteria to incorporate SDHC epimutation status are interesting topics for future study. ('Carney triad', 'Disease', (4, 16)) ('SDH', 'Gene', '6390', (72, 75)) ('SDH', 'Gene', '6390', (201, 204)) ('SDHC', 'Gene', (201, 205)) ('SDH', 'Gene', '6390', (50, 53)) ('SDH', 'Gene', (72, 75)) ('SDHC', 'Gene', (50, 54)) ('SDH', 'Gene', (201, 204)) ('SDHC', 'Gene', '6391', (201, 205)) ('SDHC', 'Gene', '6391', (50, 54)) ('SDH', 'Gene', (50, 53)) ('epimutation', 'Var', (55, 66)) ('correlation', 'Interaction', (33, 44)) 86841 25540324 In addition, none of the dSDH GISTs we studied, including SDHx-mutant and SDHx-WT, had large contiguous deletions on chromosome 1q (fig. ('SDH', 'Gene', (74, 77)) ('SDH', 'Gene', (58, 61)) ('GIST', 'Phenotype', 'HP:0100723', (30, 34)) ('SDH', 'Gene', '6390', (26, 29)) ('SDH', 'Gene', '6390', (74, 77)) ('deletions', 'Var', (104, 113)) ('SDH', 'Gene', '6390', (58, 61)) ('SDH', 'Gene', (26, 29)) 86842 25540324 Stand-alone SDHC epimutation in SDHx-WT GIST in our study contrasts with a recently proposed molecular triad of simultaneous chromosome 1q deletion and SDHB and SDHC promoter methylation that were based on a high-cycle number (60-cycle) bisulfite polymerase chain reaction (PCR) assay applied to a series of three Carney triad GISTs. ('SDHC', 'Gene', (161, 165)) ('GIST', 'Phenotype', 'HP:0100723', (40, 44)) ('deletion', 'Var', (139, 147)) ('GIST', 'Phenotype', 'HP:0100723', (327, 331)) ('SDHB', 'Gene', (152, 156)) ('SDH', 'Gene', (161, 164)) ('SDH', 'Gene', '6390', (12, 15)) ('SDH', 'Gene', '6390', (32, 35)) ('SDH', 'Gene', '6390', (152, 155)) ('SDHC', 'Gene', '6391', (161, 165)) ('SDHC', 'Gene', '6391', (12, 16)) ('SDH', 'Gene', '6390', (161, 164)) ('epimutation', 'Var', (17, 28)) ('SDHC', 'Gene', (12, 16)) ('SDH', 'Gene', (12, 15)) ('SDH', 'Gene', (32, 35)) ('SDH', 'Gene', (152, 155)) ('SDHB', 'Gene', '6390', (152, 156)) 86843 25540324 Therefore, it seems uncharacteristic that tumors could simultaneously harbor both SDHB and SDHC promoter hypermethylation. ('SDHC', 'Gene', (91, 95)) ('SDHC', 'Gene', '6391', (91, 95)) ('tumors', 'Disease', (42, 48)) ('SDHB', 'Gene', '6390', (82, 86)) ('tumors', 'Disease', 'MESH:D009369', (42, 48)) ('tumors', 'Phenotype', 'HP:0002664', (42, 48)) ('SDHB', 'Gene', (82, 86)) ('hypermethylation', 'Var', (105, 121)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) 86844 25540324 One case in our study (dSDH38) had a relatively small 8.4-kbp germline intragenic deletion in SDHC, identical to that previously reported in a paraganglioma (known as the "Pittsburgh mutation"), with tumor LOH in the remaining allele; however, outside of relatively rare instances of germline SDHC intragenic deletions in patients with paraganglioma and/or GIST that then complete the mutation with LOH, there are no events in our cases that would classify as chromosome band size deletions on 1q in dSDH GIST (fig. ('SDH', 'Gene', '6390', (501, 504)) ('paraganglioma', 'Phenotype', 'HP:0002668', (143, 156)) ('GIST', 'Phenotype', 'HP:0100723', (505, 509)) ('SDHC', 'Gene', (94, 98)) ('SDH', 'Gene', '6390', (24, 27)) ('SDH', 'Gene', '6390', (94, 97)) ('SDH', 'Gene', '6390', (293, 296)) ('paraganglioma', 'Disease', (336, 349)) ('patients', 'Species', '9606', (322, 330)) ('deletions on', 'Var', (481, 493)) ('SDH', 'Gene', (501, 504)) ('tumor', 'Disease', (200, 205)) ('paraganglioma', 'Disease', 'MESH:D010235', (336, 349)) ('SDHC', 'Gene', '6391', (293, 297)) ('tumor', 'Disease', 'MESH:D009369', (200, 205)) ('paraganglioma', 'Disease', (143, 156)) ('SDH', 'Gene', (24, 27)) ('SDH', 'Gene', (94, 97)) ('SDH', 'Gene', (293, 296)) ('paraganglioma', 'Disease', 'MESH:D010235', (143, 156)) ('SDHC', 'Gene', '6391', (94, 98)) ('paraganglioma', 'Phenotype', 'HP:0002668', (336, 349)) ('tumor', 'Phenotype', 'HP:0002664', (200, 205)) ('GIST', 'Phenotype', 'HP:0100723', (357, 361)) ('SDHC', 'Gene', (293, 297)) 86846 25540324 We evaluated multiple project data sets from the GEO and The Cancer Genome Atlas (TCGA) databases, including non-GIST pediatric tumors; mesenchymal, neuroectodermal, and epithelial tumors; and specimens with SDHx, IDH1/2, or TET mutations and associated with a hypermethylator epigenotype. ('Cancer', 'Disease', (61, 67)) ('SDH', 'Gene', '6390', (208, 211)) ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('TET', 'Chemical', 'MESH:C010349', (225, 228)) ('tumors', 'Disease', (128, 134)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) ('hypermethylator epigenotype', 'Var', (261, 288)) ('tumors', 'Phenotype', 'HP:0002664', (181, 187)) ('Cancer', 'Disease', 'MESH:D009369', (61, 67)) ('IDH', 'Gene', (214, 217)) ('tumors', 'Disease', 'MESH:D009369', (128, 134)) ('epithelial tumors', 'Disease', (170, 187)) ('GIST', 'Phenotype', 'HP:0100723', (113, 117)) ('SDH', 'Gene', (208, 211)) ('epithelial tumors', 'Disease', 'MESH:D002277', (170, 187)) ('tumors', 'Disease', (181, 187)) ('IDH', 'Gene', '3417', (214, 217)) ('Cancer', 'Phenotype', 'HP:0002664', (61, 67)) ('TET', 'Gene', (225, 228)) ('tumors', 'Disease', 'MESH:D009369', (181, 187)) ('tumors', 'Phenotype', 'HP:0002664', (128, 134)) 86848 25540324 Beyond the SDHx-WT and SDHC-mutant GISTs in our study, we identified no cancers in GEO with a hypermethylated SDHC promoter (Fig. ('hypermethylated', 'Var', (94, 109)) ('SDHC', 'Gene', '6391', (23, 27)) ('SDH', 'Gene', (23, 26)) ('GIST', 'Phenotype', 'HP:0100723', (35, 39)) ('SDH', 'Gene', '6390', (110, 113)) ('SDH', 'Gene', (11, 14)) ('cancer', 'Phenotype', 'HP:0002664', (72, 78)) ('SDHC', 'Gene', (110, 114)) ('SDHC', 'Gene', '6391', (110, 114)) ('SDH', 'Gene', (110, 113)) ('SDH', 'Gene', '6390', (23, 26)) ('cancers', 'Phenotype', 'HP:0002664', (72, 79)) ('cancers', 'Disease', (72, 79)) ('cancers', 'Disease', 'MESH:D009369', (72, 79)) ('SDH', 'Gene', '6390', (11, 14)) ('SDHC', 'Gene', (23, 27)) 86849 25540324 One cancer specimen out of multiple TCGA data sets:an instance of papillary renal carcinoma (1 of 226 total papillary kidney cancers with methylation array data):was found to have hemimethylated SDHCme (specimen ID: TCGA-F9-A8NY-01A-11D-A369-05; fig. ('renal carcinoma', 'Phenotype', 'HP:0005584', (76, 91)) ('cancers', 'Phenotype', 'HP:0002664', (125, 132)) ('SDHC', 'Gene', (195, 199)) ('SDHC', 'Gene', '6391', (195, 199)) ('cancer', 'Phenotype', 'HP:0002664', (4, 10)) ('papillary renal carcinoma', 'Disease', (66, 91)) ('cancer', 'Phenotype', 'HP:0002664', (125, 131)) ('carcinoma', 'Phenotype', 'HP:0030731', (82, 91)) ('papillary kidney cancers', 'Disease', (108, 132)) ('cancer', 'Disease', (4, 10)) ('papillary kidney cancers', 'Disease', 'MESH:D007680', (108, 132)) ('cancer', 'Disease', 'MESH:D009369', (4, 10)) ('kidney cancers', 'Phenotype', 'HP:0009726', (118, 132)) ('cancer', 'Disease', (125, 131)) ('cancer', 'Disease', 'MESH:D009369', (125, 131)) ('papillary renal carcinoma', 'Disease', 'MESH:C538614', (66, 91)) ('papillary renal carcinoma', 'Phenotype', 'HP:0006766', (66, 91)) ('hemimethylated', 'Var', (180, 194)) 86852 25540324 Furthermore, the tumor-specific convergence in dSDH GIST of mutually exclusive SDHCme and SDHx mutation meets the criteria for driver epimutation as recently discussed by Sproul and Meehan. ('SDH', 'Gene', '6390', (79, 82)) ('tumor', 'Disease', (17, 22)) ('SDH', 'Gene', '6390', (48, 51)) ('SDH', 'Gene', '6390', (90, 93)) ('SDHC', 'Gene', (79, 83)) ('SDH', 'Gene', (48, 51)) ('SDH', 'Gene', (79, 82)) ('SDH', 'Gene', (90, 93)) ('SDHC', 'Gene', '6391', (79, 83)) ('GIST', 'Phenotype', 'HP:0100723', (52, 56)) ('tumor', 'Disease', 'MESH:D009369', (17, 22)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) ('mutation', 'Var', (95, 103)) 86856 25540324 Whole-genome expression analysis of 7 SDHx-WT and 13 SDHx mutants identified 4 (of 54,675 total) probe sets with significantly decreased expression (q < 0.05) in SDHx-WT dSDH GIST (Fig. ('SDHx-WT dSDH GIST', 'Disease', (162, 179)) ('SDH', 'Gene', '6390', (38, 41)) ('decreased', 'NegReg', (127, 136)) ('SDH', 'Gene', (53, 56)) ('expression', 'MPA', (137, 147)) ('SDHx-WT dSDH GIST', 'Disease', 'MESH:D046152', (162, 179)) ('SDH', 'Gene', (171, 174)) ('SDH', 'Gene', '6390', (162, 165)) ('GIST', 'Phenotype', 'HP:0100723', (175, 179)) ('SDH', 'Gene', '6390', (53, 56)) ('SDH', 'Gene', (38, 41)) ('SDH', 'Gene', (162, 165)) ('SDH', 'Gene', '6390', (171, 174)) ('mutants', 'Var', (58, 65)) 86864 25540324 Similarly, this SDHC expression-based hierarchical clustering nearly perfectly segregated specimens according to SDHx-WT versus SDHx-mutant status, with the exception of a heterozygous SDHC mutant with promoter methylation as the second hit (Fig. ('SDHC', 'Gene', (16, 20)) ('SDHC', 'Gene', '6391', (16, 20)) ('SDHC', 'Gene', (185, 189)) ('mutant', 'Var', (190, 196)) ('SDHC', 'Gene', '6391', (185, 189)) ('SDHx-WT versus SDHx', 'Disease', 'MESH:D006086', (113, 132)) ('SDHx-WT versus SDHx', 'Disease', (113, 132)) 86865 25540324 2A), whose reduced SDHC expression is consistent with gene inactivation via tandem monoallelic silencing and mutation. ('SDHC', 'Gene', '6391', (19, 23)) ('reduced', 'NegReg', (11, 18)) ('SDHC', 'Gene', (19, 23)) ('monoallelic silencing', 'Var', (83, 104)) ('mutation', 'Var', (109, 117)) 86868 25540324 Our results suggest that SDHC epimutation:evidenced by promoter methylation and gene expression silencing:is common among Carney triad GISTs. ('SDHC', 'Gene', (25, 29)) ('SDHC', 'Gene', '6391', (25, 29)) ('epimutation', 'Var', (30, 41)) ('gene expression', 'MPA', (80, 95)) ('GIST', 'Phenotype', 'HP:0100723', (135, 139)) 86869 25540324 However, it is important to note that some patients with a morphology-based Carney triad diagnosis may have SDHx mutation, negative SDHCme, and maintenance of SDHC transcription, and that most GIST cases with SDHCme and silencing are not associated with Carney triad at the time of diagnosis. ('SDH', 'Gene', (209, 212)) ('SDH', 'Gene', '6390', (159, 162)) ('SDHC', 'Gene', '6391', (209, 213)) ('Carney triad', 'Disease', (76, 88)) ('SDHC', 'Gene', (132, 136)) ('mutation', 'Var', (113, 121)) ('negative', 'NegReg', (123, 131)) ('SDH', 'Gene', (159, 162)) ('SDHC', 'Gene', '6391', (159, 163)) ('GIST', 'Phenotype', 'HP:0100723', (193, 197)) ('SDHC', 'Gene', (209, 213)) ('SDH', 'Gene', '6390', (108, 111)) ('patients', 'Species', '9606', (43, 51)) ('SDH', 'Gene', '6390', (132, 135)) ('SDHC', 'Gene', '6391', (132, 136)) ('SDH', 'Gene', '6390', (209, 212)) ('SDH', 'Gene', (108, 111)) ('SDHC', 'Gene', (159, 163)) ('SDH', 'Gene', (132, 135)) 86871 25540324 Because Carney triad is a post hoc diagnosis based on the emergence of a spectrum of tumors over the lifetime of a patient, longitudinal follow-up is necessary to establish the prognostic specificity of GIST SDHC epimutation status for subsequent development of Carney triad sequelae. ('SDHC', 'Gene', '6391', (208, 212)) ('tumors', 'Disease', 'MESH:D009369', (85, 91)) ('Carney triad', 'Disease', (262, 274)) ('Carney', 'Disease', (8, 14)) ('GIST', 'Phenotype', 'HP:0100723', (203, 207)) ('epimutation status', 'Var', (213, 231)) ('patient', 'Species', '9606', (115, 122)) ('SDHC', 'Gene', (208, 212)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('tumors', 'Phenotype', 'HP:0002664', (85, 91)) ('tumors', 'Disease', (85, 91)) 86872 25540324 Epimutation may be encountered soma-wide in patients with disorders like fragile X and Lynch syndromes. ('Lynch syndrome', 'Disease', 'MESH:D003123', (87, 101)) ('patients', 'Species', '9606', (44, 52)) ('Epimutation', 'Var', (0, 11)) ('fragile X', 'Disease', 'MESH:D005600', (73, 82)) ('Lynch syndrome', 'Disease', (87, 101)) ('fragile X', 'Disease', (73, 82)) 86873 25540324 We tested blood and saliva from SDHx-WT GIST patients for constitutional SDHC epimutation, the manifestations of which could provide insight into the developmental timing/establishment of the epimutant DNA methylation mark. ('SDH', 'Gene', '6390', (73, 76)) ('SDHC', 'Gene', (73, 77)) ('SDH', 'Gene', '6390', (32, 35)) ('SDHC', 'Gene', '6391', (73, 77)) ('epimutation', 'Var', (78, 89)) ('patients', 'Species', '9606', (45, 53)) ('SDH', 'Gene', (73, 76)) ('SDH', 'Gene', (32, 35)) ('GIST', 'Phenotype', 'HP:0100723', (40, 44)) 86878 25540324 Previous studies have shown that dSDH GISTs are collectively characterized by genome-wide hypermethylation and low cytogenetic complexity; the absence of both SDHx coding mutations and LOH in many cases left the SDH-deficient tumor phenotype unexplained. ('SDH', 'Gene', '6390', (159, 162)) ('SDH', 'Gene', '6390', (34, 37)) ('SDH', 'Gene', (34, 37)) ('SDH', 'Gene', (212, 215)) ('SDH', 'Gene', (159, 162)) ('absence', 'Var', (143, 150)) ('GIST', 'Phenotype', 'HP:0100723', (38, 42)) ('SDH-deficient tumor', 'Disease', 'MESH:D009369', (212, 231)) ('tumor', 'Phenotype', 'HP:0002664', (226, 231)) ('mutations', 'Var', (171, 180)) ('SDH-deficient tumor', 'Disease', (212, 231)) ('SDH', 'Gene', '6390', (212, 215)) 86879 25540324 In the current study, we demonstrate that SDHx-WT GISTs, including several from patients with Carney triad, commonly arise from SDHC epimutation, evidenced by highly focal SDHC promoter CGI hypermethylation and transcriptional silencing. ('GIST', 'Phenotype', 'HP:0100723', (50, 54)) ('SDH', 'Gene', '6390', (128, 131)) ('SDH', 'Gene', '6390', (42, 45)) ('patients', 'Species', '9606', (80, 88)) ('arise from', 'Reg', (117, 127)) ('SDHC', 'Gene', (172, 176)) ('SDH', 'Gene', (172, 175)) ('SDH', 'Gene', (42, 45)) ('hypermethylation', 'Var', (190, 206)) ('epimutation', 'Var', (133, 144)) ('SDHC', 'Gene', (128, 132)) ('Carney triad', 'Disease', (94, 106)) ('SDHC', 'Gene', '6391', (172, 176)) ('SDH', 'Gene', (128, 131)) ('SDHC', 'Gene', '6391', (128, 132)) ('SDH', 'Gene', '6390', (172, 175)) 86882 25540324 Regarding a recently proposed molecular triad of hypermethylation of both SDHB and SDHC promoters coupled with 1q deletion as a mechanism of SDH deficiency in Carney triad tumors, we found no instances of simultaneous SDHC and SDHx comethylation and no cases with large chromosome 1q deletion. ('SDHC', 'Gene', '6391', (218, 222)) ('SDH', 'Gene', (227, 230)) ('SDH deficiency in Carney triad tumors', 'Disease', (141, 178)) ('SDH', 'Gene', (83, 86)) ('SDH deficiency in Carney triad tumors', 'Disease', 'MESH:C565803', (141, 178)) ('SDH', 'Gene', (74, 77)) ('SDH', 'Gene', '6390', (141, 144)) ('SDH', 'Gene', (218, 221)) ('tumors', 'Phenotype', 'HP:0002664', (172, 178)) ('SDHC', 'Gene', (83, 87)) ('SDHC', 'Gene', (218, 222)) ('tumor', 'Phenotype', 'HP:0002664', (172, 177)) ('SDHB', 'Gene', '6390', (74, 78)) ('SDH', 'Gene', (141, 144)) ('deletion', 'Var', (114, 122)) ('SDH', 'Gene', '6390', (227, 230)) ('SDH', 'Gene', '6390', (83, 86)) ('SDHB', 'Gene', (74, 78)) ('SDH', 'Gene', '6390', (218, 221)) ('SDHC', 'Gene', '6391', (83, 87)) ('SDH', 'Gene', '6390', (74, 77)) 86884 25540324 These results establish SDHC epimutation as the molecular pathologic basis for disabling the SDH complex in most of SDHx-WT GIST patients, encompassing those with Carney triad. ('SDH', 'Gene', '6390', (24, 27)) ('SDHC', 'Gene', (24, 28)) ('SDH', 'Gene', (116, 119)) ('SDH', 'Gene', '6390', (93, 96)) ('patients', 'Species', '9606', (129, 137)) ('disabling', 'Reg', (79, 88)) ('SDHC', 'Gene', '6391', (24, 28)) ('epimutation', 'Var', (29, 40)) ('SDH', 'Gene', (24, 27)) ('GIST', 'Phenotype', 'HP:0100723', (124, 128)) ('SDH', 'Gene', (93, 96)) ('SDH', 'Gene', '6390', (116, 119)) 86886 25540324 Although distinct from those Lynch syndrome patients with soma-wide MLH1 hemimethylation, low to modest levels of statistically significant SDHC methylation in patients with SDHC-epimutant GIST are reminiscent of mosaic low-level MLH1 methylation (2 to 5%) in the blood of other Lynch patients. ('MLH1', 'Gene', '4292', (68, 72)) ('SDHC', 'Gene', (140, 144)) ('SDHC', 'Gene', (174, 178)) ('MLH1', 'Gene', (68, 72)) ('patients', 'Species', '9606', (160, 168)) ('patients', 'Species', '9606', (44, 52)) ('Lynch syndrome', 'Disease', (29, 43)) ('SDHC', 'Gene', '6391', (174, 178)) ('SDHC', 'Gene', '6391', (140, 144)) ('MLH1', 'Gene', (230, 234)) ('Lynch syndrome', 'Disease', 'MESH:D003123', (29, 43)) ('MLH1', 'Gene', '4292', (230, 234)) ('GIST', 'Phenotype', 'HP:0100723', (189, 193)) ('patients', 'Species', '9606', (285, 293)) ('methylation', 'Var', (145, 156)) 86888 25540324 Future studies are required to explore and further validate the manifestations of SDHC epimutation mosaicism in the soma of these patients. ('patients', 'Species', '9606', (130, 138)) ('epimutation mosaicism', 'Var', (87, 108)) ('SDHC', 'Gene', '6391', (82, 86)) ('SDHC', 'Gene', (82, 86)) 86889 25540324 Such mosaicism in the soma is consistent with a postzygotic onset of epimutation, rather than germline inheritance, which would be expected to result in soma-wide SDHC hemimethylation, unless partially erased in somatic lineages. ('result in', 'Reg', (143, 152)) ('SDHC', 'Gene', (163, 167)) ('epimutation', 'Var', (69, 80)) ('SDHC', 'Gene', '6391', (163, 167)) 86890 25540324 In either case, the resulting mosaicism points to a process of SDHC reprogramming during early development, which is then maintained so as to be detectable in blood and saliva later in life. ('SDHC', 'Gene', '6391', (63, 67)) ('SDHC', 'Gene', (63, 67)) ('mosaicism', 'Var', (30, 39)) 86893 25540324 The finding of SDHC epimutation is important for several reasons. ('SDHC', 'Gene', (15, 19)) ('epimutation', 'Var', (20, 31)) ('SDHC', 'Gene', '6391', (15, 19)) 86894 25540324 First, in the clinical genetic evaluation of GIST patients, our data indicate that SDHC epimutation frequency is comparable to SDHx coding sequence mutation and should be considered in dSDH GIST cases, particularly those that prove SDHx-WT. ('patients', 'Species', '9606', (50, 58)) ('SDH', 'Gene', (127, 130)) ('SDH', 'Gene', '6390', (83, 86)) ('GIST', 'Phenotype', 'HP:0100723', (190, 194)) ('SDH', 'Gene', '6390', (232, 235)) ('SDHC', 'Gene', (83, 87)) ('GIST', 'Phenotype', 'HP:0100723', (45, 49)) ('epimutation', 'Var', (88, 99)) ('SDH', 'Gene', '6390', (186, 189)) ('SDHC', 'Gene', '6391', (83, 87)) ('SDH', 'Gene', (83, 86)) ('SDH', 'Gene', (186, 189)) ('SDH', 'Gene', '6390', (127, 130)) ('SDH', 'Gene', (232, 235)) 86896 25540324 The identification of SDHC epimutation raises the possibility that demethylating agents such as decitabine could restore SDHC expression and SDH function in SDHx-WT GISTs, which currently lack targeted chemotherapy. ('SDHC', 'Gene', (22, 26)) ('SDH', 'Gene', '6390', (141, 144)) ('decitabine', 'Chemical', 'MESH:D000077209', (96, 106)) ('expression', 'MPA', (126, 136)) ('SDH', 'Gene', '6390', (121, 124)) ('SDHC', 'Gene', '6391', (22, 26)) ('GIST', 'Phenotype', 'HP:0100723', (165, 169)) ('SDH', 'Gene', (157, 160)) ('SDH', 'Gene', '6390', (22, 25)) ('SDH', 'Gene', (121, 124)) ('SDHC', 'Gene', (121, 125)) ('SDH', 'Gene', (141, 144)) ('SDHC', 'Gene', '6391', (121, 125)) ('function', 'MPA', (145, 153)) ('SDH', 'Gene', '6390', (157, 160)) ('SDH', 'Gene', (22, 25)) ('restore', 'PosReg', (113, 120)) ('epimutation', 'Var', (27, 38)) 86897 25540324 Finally, the discovery of SDHC epimutation now provides a unifying explanation for the pathogenesis of almost all cases of dSDH/methyl-divergent GIST, where loss of SDH function arises through either mutation or epimutation. ('SDH', 'Gene', '6390', (165, 168)) ('SDHC', 'Gene', '6391', (26, 30)) ('SDH', 'Gene', '6390', (124, 127)) ('SDH', 'Gene', (165, 168)) ('epimutation', 'Var', (212, 223)) ('SDH', 'Gene', (124, 127)) ('SDH', 'Gene', '6390', (26, 29)) ('epimutation', 'Var', (31, 42)) ('GIST', 'Phenotype', 'HP:0100723', (145, 149)) ('mutation', 'Var', (200, 208)) ('SDHC', 'Gene', (26, 30)) ('SDH', 'Gene', (26, 29)) 86898 25540324 For now, detection of SDHC epimutation in surgical pathology specimens will require DNA methylation and/or gene expression analysis because presently there are no published methods for SDHC protein immunohistochemistry on fixed tissue, and we have attempted but so far were not able to optimize such an assay. ('SDHC', 'Gene', (22, 26)) ('SDHC', 'Gene', '6391', (22, 26)) ('SDHC', 'Gene', (185, 189)) ('SDHC', 'Gene', '6391', (185, 189)) ('epimutation', 'Var', (27, 38)) 86900 25540324 The rarity of trans-generational heritability of Carney triad, coupled with homozygous tumor SDHC epimutation without LOH in SDHx-WT GIST patients, raises the possibility of primary/de novo SDHC epimutation. ('patients', 'Species', '9606', (138, 146)) ('tumor', 'Phenotype', 'HP:0002664', (87, 92)) ('Carney triad', 'Disease', (49, 61)) ('SDH', 'Gene', '6390', (93, 96)) ('GIST', 'Phenotype', 'HP:0100723', (133, 137)) ('SDH', 'Gene', '6390', (125, 128)) ('tumor', 'Disease', (87, 92)) ('SDHC', 'Gene', (93, 97)) ('tumor', 'Disease', 'MESH:D009369', (87, 92)) ('epimutation', 'Var', (98, 109)) ('SDH', 'Gene', '6390', (190, 193)) ('SDHC', 'Gene', (190, 194)) ('SDHC', 'Gene', '6391', (93, 97)) ('SDH', 'Gene', (93, 96)) ('SDH', 'Gene', (125, 128)) ('SDHC', 'Gene', '6391', (190, 194)) ('SDH', 'Gene', (190, 193)) 86901 25540324 A clue to the mechanism of SDHC silencing may be that homozygous SDHCme GISTs in our study arose only in females, implicating a potential role for sex chromosome or hormone biology in the mechanism of SDHC epimutation. ('SDHC', 'Gene', (27, 31)) ('SDHC', 'Gene', (65, 69)) ('SDHC', 'Gene', '6391', (27, 31)) ('SDHC', 'Gene', (201, 205)) ('SDHC', 'Gene', '6391', (65, 69)) ('SDHC', 'Gene', '6391', (201, 205)) ('epimutation', 'Var', (206, 217)) ('GIST', 'Phenotype', 'HP:0100723', (72, 76)) 86906 25540324 All cases received histopathologic diagnosis including immunohistochemistry for SDHA and SDHB protein expression where feasible [National Cancer Institute (NCI) Laboratory of Pathology]; only SDH-disabled tumor cases as evidenced by SDH-negative immunophenotype and/or hypermethylation epigenomic signature [methyl-divergent signature ] were included in the study. ('tumor', 'Disease', 'MESH:D009369', (205, 210)) ('SDH', 'Gene', (233, 236)) ('Cancer', 'Phenotype', 'HP:0002664', (138, 144)) ('SDHB', 'Gene', (89, 93)) ('SDH', 'Gene', (89, 92)) ('hypermethylation', 'Var', (269, 285)) ('SDH', 'Gene', (192, 195)) ('SDH', 'Gene', '6390', (80, 83)) ('SDHA', 'Gene', (80, 84)) ('tumor', 'Phenotype', 'HP:0002664', (205, 210)) ('Cancer', 'Disease', (138, 144)) ('SDHA', 'Gene', '6389', (80, 84)) ('SDH', 'Gene', (80, 83)) ('SDH', 'Gene', '6390', (233, 236)) ('Cancer', 'Disease', 'MESH:D009369', (138, 144)) ('SDHB', 'Gene', '6390', (89, 93)) ('tumor', 'Disease', (205, 210)) ('SDH', 'Gene', '6390', (192, 195)) ('SDH', 'Gene', '6390', (89, 92)) 86933 25540324 Tumor SDHCme zygosity and blood and saliva SDHCme levels were based on the average beta value across SDHC promoter CpG targets mapping to the TSS-proximal CGI (cg00576014, cg01931502, cg11221265, cg12036621, and cg17496230). ('cg17496230', 'Var', (212, 222)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('SDHC', 'Gene', '6391', (43, 47)) ('cg00576014', 'Var', (160, 170)) ('SDHC', 'Gene', (6, 10)) ('SDHC', 'Gene', '6391', (6, 10)) ('SDHC', 'Gene', (101, 105)) ('SDHC', 'Gene', '6391', (101, 105)) ('cg12036621', 'Var', (196, 206)) ('cg11221265', 'Var', (184, 194)) ('cg01931502', 'Var', (172, 182)) ('SDHC', 'Gene', (43, 47)) 86950 31410193 Currently, SDHB mutation status is the only genetic factor associated with poor prognosis. ('SDHB', 'Gene', (11, 15)) ('SDHB', 'Gene', '6390', (11, 15)) ('mutation', 'Var', (16, 24)) 86951 31410193 We recently reported that assessment of telomerase activation and ATRX mutations in tumor tissue may have clinical significance for identifying metastatic disease (mPPGLs). ('telomerase', 'Protein', (40, 50)) ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('metastatic disease', 'Disease', (144, 162)) ('tumor', 'Disease', (84, 89)) ('mutations', 'Var', (71, 80)) ('ATRX', 'Gene', (66, 70)) ('ATRX', 'Gene', '546', (66, 70)) ('activation', 'PosReg', (51, 61)) 87015 31410193 When segregating patients according to their classifier features, 72% of score 3 (high miR-183-5p and miR-21-3p levels; SDHB mutated) patients were metastatic, compared to the 4.7% of score 0 (low miR-183-5p and miR-21-3p expression, and no-SDHB mutated) (Figure 2B). ('SDHB', 'Gene', (241, 245)) ('miR-183', 'Gene', (87, 94)) ('miR-183', 'Gene', (197, 204)) ('mutated', 'Var', (125, 132)) ('miR-183', 'Gene', '406959', (197, 204)) ('miR-21-3p', 'Gene', '406995', (102, 111)) ('SDHB', 'Gene', '6390', (120, 124)) ('patients', 'Species', '9606', (134, 142)) ('metastatic', 'CPA', (148, 158)) ('miR-21-3p', 'Gene', '406995', (212, 221)) ('miR-21-3p', 'Gene', (102, 111)) ('patients', 'Species', '9606', (17, 25)) ('miR-21-3p', 'Gene', (212, 221)) ('SDHB', 'Gene', (120, 124)) ('SDHB', 'Gene', '6390', (241, 245)) ('miR-183', 'Gene', '406959', (87, 94)) 87037 31410193 Apart from PPGL, low-grade glioma (LGG) also exhibits a significant negative correlation between miR-21-3p and TSC2 (rho=-0.18, P=1.3 10-4), as well as a positive one with pS6 levels (in Ser235/236: rho=0.27, P=1.7 10-8; in Ser240/244: rho=0.23, P=6.6 10-7) (Figure 4A). ('glioma', 'Disease', (27, 33)) ('miR-21-3p', 'Gene', (97, 106)) ('pS6', 'Gene', (172, 175)) ('negative', 'NegReg', (68, 76)) ('Ser240', 'Chemical', '-', (224, 230)) ('glioma', 'Disease', 'MESH:D005910', (27, 33)) ('glioma', 'Phenotype', 'HP:0009733', (27, 33)) ('TSC2', 'Gene', '7249', (111, 115)) ('pS6', 'Gene', '338413', (172, 175)) ('TSC2', 'Gene', (111, 115)) ('Ser240/244', 'Var', (224, 234)) ('miR-21-3p', 'Gene', '406995', (97, 106)) ('Ser235', 'Chemical', '-', (187, 193)) 87045 31410193 miR-96-5p, miR-182-5p and miR-21-3p remained elevated in PPGL vs. healthy individuals, with miR-21-3p being the best discriminator (AUC=0.96; P=0.0001). ('miR', 'Gene', '220972', (26, 29)) ('miR', 'Gene', (26, 29)) ('miR-182-5p', 'Gene', (11, 21)) ('miR-21-3p', 'Gene', (92, 101)) ('miR-21-3p', 'Gene', '406995', (92, 101)) ('miR', 'Gene', (92, 95)) ('miR-21-3p', 'Gene', '406995', (26, 35)) ('miR-182-5p', 'Gene', '100302183', (11, 21)) ('miR', 'Gene', '220972', (92, 95)) ('miR', 'Gene', '220972', (0, 3)) ('miR', 'Gene', '220972', (11, 14)) ('miR', 'Gene', (11, 14)) ('PPGL', 'Var', (57, 61)) ('miR-21-3p', 'Gene', (26, 35)) ('miR', 'Gene', (0, 3)) ('elevated', 'PosReg', (45, 53)) 87046 31410193 Notably, circulating levels of all miRNAs of the signature (except miR-551b-3p and miR-202-5p) exhibited a tendency towards increased expression in mPPGLs compared to non-metastatic cases, reaching statistical significance in the mPPGL subgroup with evidence of progressive disease (Table S8). ('circulating levels', 'MPA', (9, 27)) ('expression', 'MPA', (134, 144)) ('progressive disease', 'Disease', 'MESH:D018450', (262, 281)) ('increased', 'PosReg', (124, 133)) ('mPPGLs', 'Var', (148, 154)) ('miR-202', 'Gene', (83, 90)) ('progressive disease', 'Disease', (262, 281)) ('miR-202', 'Gene', '574448', (83, 90)) ('miR', 'Gene', '220972', (35, 38)) ('miR', 'Gene', '220972', (83, 86)) ('miR', 'Gene', (35, 38)) ('miR', 'Gene', (83, 86)) ('miR-551b', 'Gene', '693136', (67, 75)) ('miR', 'Gene', '220972', (67, 70)) ('miR-551b', 'Gene', (67, 75)) ('miR', 'Gene', (67, 70)) ('mPPGL', 'Disease', (230, 235)) 87050 31410193 Consistent with the findings in serum of PPGL patients, miR-202-5p and miR-551b-3p, which exhibited low levels in patients, were undetectable in imCCs, whereas the levels of all other miRNAs were higher in Sdhb-/- compared to WT cells (Figure S6). ('miR', 'Gene', (71, 74)) ('patients', 'Species', '9606', (46, 54)) ('patients', 'Species', '9606', (114, 122)) ('miR-202', 'Gene', (56, 63)) ('Sdhb-/-', 'Var', (206, 213)) ('miR-202', 'Gene', '574448', (56, 63)) ('higher', 'PosReg', (196, 202)) ('miR', 'Gene', '220972', (56, 59)) ('miR', 'Gene', (56, 59)) ('miR-551b', 'Gene', '693136', (71, 79)) ('levels', 'MPA', (164, 170)) ('miR', 'Gene', '220972', (184, 187)) ('miR', 'Gene', (184, 187)) ('miR', 'Gene', '220972', (71, 74)) ('miR-551b', 'Gene', (71, 79)) 87112 31395026 Therefore, according to the AJCC cancer staging manual (8th edition), the staging of the primary retroperitoneal paraganglioma should be T2N0M1b. ('retroperitoneal paraganglioma', 'Disease', (97, 126)) ('retroperitoneal paraganglioma', 'Phenotype', 'HP:0006729', (97, 126)) ('cancer', 'Disease', (33, 39)) ('cancer', 'Disease', 'MESH:D009369', (33, 39)) ('paraganglioma', 'Phenotype', 'HP:0002668', (113, 126)) ('T2N0M1b', 'Var', (137, 144)) ('cancer', 'Phenotype', 'HP:0002664', (33, 39)) ('retroperitoneal paraganglioma', 'Disease', 'MESH:D012186', (97, 126)) 87145 31262070 A Clinical Efficacy of PRRT in Patients with Advanced, Nonresectable, Paraganglioma-Pheochromocytoma, Related to SDHx Gene Mutation Paragangliomas and pheochromytomas (PPGLs) exhibit variable malignancy, advanced/hormonally active/progressive need therapy. ('SDHx', 'Gene', (113, 117)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (132, 146)) ('Paraganglioma-Pheochromocytoma', 'Disease', (70, 100)) ('Mutation', 'Var', (123, 131)) ('malignancy', 'Disease', (192, 202)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (70, 83)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (132, 145)) ('PPGLs', 'Chemical', '-', (168, 173)) ('Paraganglioma-Pheochromocytoma', 'Disease', 'MESH:D010673', (70, 100)) ('Paragangliomas and pheochromytomas', 'Disease', 'MESH:D010235', (132, 166)) ('Patients', 'Species', '9606', (31, 39)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (84, 100)) ('malignancy', 'Disease', 'MESH:D009369', (192, 202)) 87169 31262070 Cluster 1 tumors develop in patients with germline or somatic mutations in VHL, SDHB, SDHD, SDHC, SDHAF2, SDHAF2, EPAS1, PHD2, MDH2, and FH genes and involve activation of hypoxia-angiogenic pathways. ('VHL', 'Disease', (75, 78)) ('FH genes', 'Gene', (137, 145)) ('SDHC', 'Gene', (92, 96)) ('SDHAF2', 'Gene', '54949', (106, 112)) ('SDHAF2', 'Gene', '54949', (98, 104)) ('MDH2', 'Gene', '4191', (127, 131)) ('SDHAF2', 'Gene', (106, 112)) ('SDHAF2', 'Gene', (98, 104)) ('SDHB', 'Gene', (80, 84)) ('Cluster 1 tumors', 'Disease', (0, 16)) ('patients', 'Species', '9606', (28, 36)) ('VHL', 'Disease', 'MESH:D006623', (75, 78)) ('EPAS1', 'Gene', (114, 119)) ('mutations', 'Var', (62, 71)) ('SDHD', 'Gene', '6392', (86, 90)) ('Cluster 1 tumors', 'Disease', 'MESH:D003027', (0, 16)) ('activation', 'PosReg', (158, 168)) ('hypoxia', 'Disease', (172, 179)) ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('PHD2', 'Gene', (121, 125)) ('SDHC', 'Gene', '6391', (92, 96)) ('MDH2', 'Gene', (127, 131)) ('SDHD', 'Gene', (86, 90)) ('hypoxia', 'Disease', 'MESH:D000860', (172, 179)) ('tumors', 'Phenotype', 'HP:0002664', (10, 16)) ('EPAS1', 'Gene', '2034', (114, 119)) ('PHD2', 'Gene', '54583', (121, 125)) ('SDHB', 'Gene', '6390', (80, 84)) 29990 31262070 Cluster 2 tumors develop in patients with mutations in RET, NF1, TMEM127, and MAX and involve RAS and kinase signaling pathways. ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('RET', 'Gene', '5979', (55, 58)) ('develop', 'Reg', (17, 24)) ('NF1', 'Gene', '4763', (60, 63)) ('tumors', 'Disease', (10, 16)) ('kinase signaling pathways', 'Pathway', (102, 127)) ('NF1', 'Gene', (60, 63)) ('tumors', 'Disease', 'MESH:D009369', (10, 16)) ('tumors', 'Phenotype', 'HP:0002664', (10, 16)) ('RET', 'Gene', (55, 58)) ('involve', 'Reg', (86, 93)) ('TMEM127', 'Gene', '55654', (65, 72)) ('patients', 'Species', '9606', (28, 36)) ('mutations', 'Var', (42, 51)) ('TMEM127', 'Gene', (65, 72)) 87171 31262070 It is associated with somatic mutations in CSDE1 or somatic gene fusions UBTF-MAML3 that cause activation of the Wnt receptor signaling and Hedgehog signaling pathways. ('CSDE1', 'Gene', '7812', (43, 48)) ('Hedgehog signaling pathways', 'Pathway', (140, 167)) ('UBTF', 'Gene', '7343', (73, 77)) ('associated', 'Reg', (6, 16)) ('activation', 'PosReg', (95, 105)) ('UBTF', 'Gene', (73, 77)) ('CSDE1', 'Gene', (43, 48)) ('mutations', 'Var', (30, 39)) ('MAML3', 'Gene', '55534', (78, 83)) ('fusions', 'Var', (65, 72)) ('MAML3', 'Gene', (78, 83)) 87172 31262070 Cluster 3 tumors develop in patients with mutations in RET, NF1, TMEM127, and MAX and involve RAS and kinase signaling pathways. ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('RET', 'Gene', '5979', (55, 58)) ('develop', 'Reg', (17, 24)) ('NF1', 'Gene', '4763', (60, 63)) ('tumors', 'Disease', (10, 16)) ('kinase signaling pathways', 'Pathway', (102, 127)) ('NF1', 'Gene', (60, 63)) ('tumors', 'Disease', 'MESH:D009369', (10, 16)) ('tumors', 'Phenotype', 'HP:0002664', (10, 16)) ('RET', 'Gene', (55, 58)) ('involve', 'Reg', (86, 93)) ('TMEM127', 'Gene', '55654', (65, 72)) ('patients', 'Species', '9606', (28, 36)) ('mutations', 'Var', (42, 51)) ('TMEM127', 'Gene', (65, 72)) 87173 31262070 Finally, cluster 4, the cortical admixture subtype overexpresses known adrenal cortex markers (CYP11B1, CYP21A2, and StAR) and PPGLs markers and is associated with mutations in MAX. ('CYP21A2', 'Gene', '1589', (104, 111)) ('CYP21A2', 'Gene', (104, 111)) ('CYP11B1', 'Gene', (95, 102)) ('MAX', 'Gene', (177, 180)) ('PPGLs', 'Chemical', '-', (127, 132)) ('CYP11B1', 'Gene', '1584', (95, 102)) ('associated', 'Reg', (148, 158)) ('PPGLs', 'Gene', (127, 132)) ('overexpresses', 'PosReg', (51, 64)) ('mutations', 'Var', (164, 173)) 87174 31262070 Germline mutations in succinate dehydrogenase enzyme complex (SDHx) genes are one of the most common genetic causes of PPGLs, occurring in up to 25% cases. ('Germline mutations', 'Var', (0, 18)) ('causes', 'Reg', (109, 115)) ('PPGLs', 'Disease', (119, 124)) ('PPGLs', 'Chemical', '-', (119, 124)) ('occurring', 'Reg', (126, 135)) ('SDHx', 'Gene', (62, 66)) ('SDHx', 'Chemical', '-', (62, 66)) 87175 31262070 There are five paraganglioma-pheochromocytoma syndromes associated with heterozygous germline mutations in genes encoding the subunits of the succinate dehydrogenase enzyme complex: PGL1-SDHD gene; PGL2-SDHAF2 gene; PGL3-SDHC gene; PGL4-SDHB gene; and PGL5-SDHA gene. ('PGL3', 'Gene', (216, 220)) ('PGL4', 'Gene', (232, 236)) ('associated', 'Reg', (56, 66)) ('PGL4', 'Gene', '6390', (232, 236)) ('SDHB', 'Gene', '6390', (237, 241)) ('paraganglioma', 'Phenotype', 'HP:0002668', (15, 28)) ('PGL3', 'Gene', '6391', (216, 220)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (29, 45)) ('PGL5', 'Gene', (252, 256)) ('SDHC', 'Gene', '6391', (221, 225)) ('SDHD', 'Gene', '6392', (187, 191)) ('PGL5', 'Gene', '6389', (252, 256)) ('SDHB', 'Gene', (237, 241)) ('mutations', 'Var', (94, 103)) ('paraganglioma-pheochromocytoma syndromes', 'Disease', 'MESH:D010673', (15, 55)) ('PGL2', 'Gene', (198, 202)) ('SDHAF2', 'Gene', '54949', (203, 209)) ('SDHD', 'Gene', (187, 191)) ('SDHAF2', 'Gene', (203, 209)) ('SDHA', 'Gene', (257, 261)) ('SDHA', 'Gene', (203, 207)) ('SDHC', 'Gene', (221, 225)) ('paraganglioma-pheochromocytoma syndromes', 'Disease', (15, 55)) ('SDHA', 'Gene', '6389', (257, 261)) ('SDHA', 'Gene', '6389', (203, 207)) ('PGL2', 'Gene', '54949', (198, 202)) 87177 31262070 Mutations in succinate dehydrogenase (SDHx) predispose patients to aggressive phenotypes, such as distal metastasis, in some series in up to 70% of patients, and tumor multiplicity and recurrence, which emphasizes an urgent need for effective therapies against SDHx-mutated PPGLs. ('patients', 'Species', '9606', (148, 156)) ('tumor', 'Phenotype', 'HP:0002664', (162, 167)) ('distal metastasis', 'CPA', (98, 115)) ('PPGLs', 'Chemical', '-', (274, 279)) ('tumor', 'Disease', (162, 167)) ('SDHx', 'Gene', (38, 42)) ('aggressive', 'CPA', (67, 77)) ('PPGLs', 'Gene', (274, 279)) ('Mutations', 'Var', (0, 9)) ('SDHx', 'Chemical', '-', (38, 42)) ('predispose', 'Reg', (44, 54)) ('patients', 'Species', '9606', (55, 63)) ('SDHx', 'Chemical', '-', (261, 265)) ('tumor', 'Disease', 'MESH:D009369', (162, 167)) 87193 31262070 Only two reports concerned outcome of PRRT in patients with exclusively SDHx mutations; Zovato et al. ('SDHx', 'Gene', (72, 76)) ('mutations', 'Var', (77, 86)) ('patients', 'Species', '9606', (46, 54)) ('SDHx', 'Chemical', '-', (72, 76)) 87202 31262070 The inclusion criteria were histological diagnosis of PPGLs and confirmed germline mutation in SDHD or SDHB genes; adults >= 18 years old, male or female, performance status (PS) 0-2; adequate renal, bone marrow, and liver function; and life expectancy of at least three months. ('SDHB', 'Gene', (103, 107)) ('germline mutation', 'Var', (74, 91)) ('PPGLs', 'Chemical', '-', (54, 59)) ('SDHD', 'Gene', '6392', (95, 99)) ('SDHD', 'Gene', (95, 99)) ('SDHB', 'Gene', '6390', (103, 107)) 87210 31262070 Exclusion criteria were as follows: Hb < 8 g/dl, WBC <2 x 103/muL, platelets < 100 x 103/muL, creatinine level > 2 mg/dL or GFR < 30 mL/min and poor performance status (Karnofsky score below 50 or EOCG status 3 or 4), which were the same as mentioned previously in the GEP-NET group. ('creatinine level', 'MPA', (94, 110)) ('GEP', 'Gene', '2896', (269, 272)) ('< 30', 'Var', (128, 132)) ('GEP', 'Gene', (269, 272)) ('< 100 x 103/muL', 'Var', (77, 92)) ('< 8 g/dl', 'Var', (39, 47)) ('creatinine', 'Chemical', 'MESH:D003404', (94, 104)) 87236 31262070 Overall 32 therapeutic sessions were performed in a group of 13 patients with SDHx mutations, with a mean cumulative administered activity of 8.3 GBq of 90Y per patient (range 6.4-14.8 GBq), mean 3.4 GBq per therapy session. ('mutations', 'Var', (83, 92)) ('SDHx', 'Chemical', '-', (78, 82)) ('patient', 'Species', '9606', (64, 71)) ('patients', 'Species', '9606', (64, 72)) ('SDHx', 'Gene', (78, 82)) ('GBq', 'Chemical', '-', (185, 188)) ('patient', 'Species', '9606', (161, 168)) ('GBq', 'Chemical', '-', (146, 149)) ('GBq', 'Chemical', '-', (200, 203)) 87241 31262070 Overall, 32 therapeutic sessions were performed in a group of 13 patients with SDHx mutations, with a mean cumulative administered activity of 8.3 GBq of 90Y per patient (range 6.4-14.8 GBq), mean 3.4 GBq per therapy session. ('GBq', 'Chemical', '-', (186, 189)) ('GBq', 'Chemical', '-', (147, 150)) ('GBq', 'Chemical', '-', (201, 204)) ('mutations', 'Var', (84, 93)) ('patient', 'Species', '9606', (65, 72)) ('SDHx', 'Chemical', '-', (79, 83)) ('patients', 'Species', '9606', (65, 73)) ('SDHx', 'Gene', (79, 83)) ('patient', 'Species', '9606', (162, 169)) 87249 31262070 One SDHB mutation carrier with a urinary bladder tumor and bone metastases had only a single PRRT treatment session and then developed a pathological spine fracture, which led to tetraplegia. ('mutation', 'Var', (9, 17)) ('bladder tumor', 'Disease', (41, 54)) ('tetraplegia', 'Disease', 'MESH:D011782', (179, 190)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('bone metastases', 'Disease', 'MESH:D009362', (59, 74)) ('fracture', 'Disease', 'MESH:D050723', (156, 164)) ('bone metastases', 'Disease', (59, 74)) ('fracture', 'Disease', (156, 164)) ('tetraplegia', 'Phenotype', 'HP:0002445', (179, 190)) ('bladder tumor', 'Disease', 'MESH:D001749', (41, 54)) ('tetraplegia', 'Disease', (179, 190)) ('SDHB', 'Gene', '6390', (4, 8)) ('SDHB', 'Gene', (4, 8)) ('led to', 'Reg', (172, 178)) ('bladder tumor', 'Phenotype', 'HP:0009725', (41, 54)) ('pathological spine', 'Phenotype', 'HP:0000925', (137, 155)) 87256 31262070 Significant differences in median OS were noted between patients with PGL1 compared to subjects with PGL4: N.R. ('PGL4', 'Gene', (101, 105)) ('patients', 'Species', '9606', (56, 64)) ('PGL4', 'Gene', '6390', (101, 105)) ('PGL1', 'Var', (70, 74)) ('median OS', 'MPA', (27, 36)) 87279 31262070 Herein, we present the outcomes after PRRT in 13 patients with SDHD and SDHB gene mutations. ('SDHB', 'Gene', (72, 76)) ('mutations', 'Var', (82, 91)) ('SDHD', 'Gene', '6392', (63, 67)) ('patients', 'Species', '9606', (49, 57)) ('SDHD', 'Gene', (63, 67)) ('SDHB', 'Gene', '6390', (72, 76)) 87291 31262070 reported the results of PRRT (90Y-DOTATATE, 177Lu-DOTATATE, and combination) in 20 patients with progressive PGLs and PCCs. ('90Y-DOTATATE', 'Chemical', 'MESH:C539274', (30, 42)) ('177Lu-DOTATATE', 'Var', (44, 58)) ('90Y-DOTATATE', 'Var', (30, 42)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (44, 58)) ('patients', 'Species', '9606', (83, 91)) 87292 31262070 They reported an 80% and 43% overall response rate with 177Lu-DOTATATE and 90Y-DOTATATE treatment, respectively. ('90Y-DOTATATE', 'Var', (75, 87)) ('90Y-DOTATATE', 'Chemical', 'MESH:C539274', (75, 87)) ('177Lu-DOTATATE', 'Var', (56, 70)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (56, 70)) 87298 31262070 reported safety and efficacy outcomes from a case series of five patients with advanced PPGLs treated with 177Lu-DOTATATE PRRT where four of them had proven SDHB mutations. ('mutations', 'Var', (162, 171)) ('PPGLs', 'Chemical', '-', (88, 93)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (107, 121)) ('SDHB', 'Gene', '6390', (157, 161)) ('patients', 'Species', '9606', (65, 73)) ('SDHB', 'Gene', (157, 161)) 87312 31262070 Three of them had a partial response, and in a single case with SDHD C11X mutation and inoperable multifocal head and neck PPGLs and middle mediastinum tumor we observed hormone normalization persisting over 10 years of follow-up. ('tumor', 'Disease', 'MESH:D009369', (152, 157)) ('hormone normalization', 'MPA', (170, 191)) ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('SDHD', 'Gene', (64, 68)) ('SDHD', 'Gene', '6392', (64, 68)) ('tumor', 'Disease', (152, 157)) ('C11X', 'Var', (69, 73)) ('PPGLs', 'Chemical', '-', (123, 128)) ('C11X', 'SUBSTITUTION', 'None', (69, 73)) 87313 31262070 2 patients with progressive/metastatic PGLs or PCCs were treated with either 131I-mIBG, 90Y-DOTATATE or 177Lu-DOTATATE. ('90Y-DOTATATE', 'Chemical', 'MESH:C539274', (88, 100)) ('131I-mIBG', 'Chemical', '-', (77, 86)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (104, 118)) ('patients', 'Species', '9606', (2, 10)) ('PCCs', 'Disease', (47, 51)) ('90Y-DOTATATE', 'Var', (88, 100)) ('131I-mIBG', 'Var', (77, 86)) 87314 31262070 Therapy with 90Y-DOTATATE resulted in a 100% response rate and patients treated with PRRT had increased PFS and response to treatment compared to 131I-mIBG treated patients. ('131I-mIBG', 'Chemical', '-', (146, 155)) ('90Y-DOTATATE', 'Chemical', 'MESH:C539274', (13, 25)) ('increased', 'PosReg', (94, 103)) ('response', 'MPA', (112, 120)) ('PFS', 'MPA', (104, 107)) ('PRRT', 'Var', (85, 89)) ('patients', 'Species', '9606', (63, 71)) ('patients', 'Species', '9606', (164, 172)) 87319 31262070 In our series of 13 SDHx gene mutations carriers median PFS for entire group was 35 months. ('SDHx', 'Chemical', '-', (20, 24)) ('mutations', 'Var', (30, 39)) ('SDHx', 'Gene', (20, 24)) 87325 31262070 In the literature we can see that outcome of PRRT in in our homogenous group of SDHx mutations carriers is similar to that reported by others in different cohorts of patients. ('mutations carriers', 'Var', (85, 103)) ('carriers', 'Var', (95, 103)) ('SDHx', 'Chemical', '-', (80, 84)) ('patients', 'Species', '9606', (166, 174)) ('SDHx', 'Gene', (80, 84)) 87326 31262070 On the other hand, in almost all these reports we can find patients with SDHx mutations. ('SDHx', 'Chemical', '-', (73, 77)) ('patients', 'Species', '9606', (59, 67)) ('SDHx', 'Gene', (73, 77)) ('mutations', 'Var', (78, 87)) 87327 31262070 In the group of 20 patients of Kong et al., eight had SDHB and SDHD mutations, two were sporadic, and the genetic background for 10 was unknown. ('patients', 'Species', '9606', (19, 27)) ('SDHB', 'Gene', '6390', (54, 58)) ('SDHB', 'Gene', (54, 58)) ('SDHD', 'Gene', '6392', (63, 67)) ('mutations', 'Var', (68, 77)) ('SDHD', 'Gene', (63, 67)) 87328 31262070 In Nastos et al., a cohort of 22 patients, SDHB mutations were found in five cases, genetic status for remaining patients was unknown. ('patients', 'Species', '9606', (33, 41)) ('SDHB', 'Gene', '6390', (43, 47)) ('patients', 'Species', '9606', (113, 121)) ('SDHB', 'Gene', (43, 47)) ('found', 'Reg', (63, 68)) ('mutations', 'Var', (48, 57)) 87329 31262070 Only Zovato and Pinato's series of four and five patients consisted of "pure" SDHD and SHDB mutations carriers, respectively. ('SDHD', 'Gene', '6392', (78, 82)) ('SDHD', 'Gene', (78, 82)) ('mutations', 'Var', (92, 101)) ('patients', 'Species', '9606', (49, 57)) ('SHDB', 'Gene', (87, 91)) 87330 31262070 It is possible that in all reported series there were more uncovered SDHx mutations carries and this fact may affected the outcomes of PRRT. ('outcomes', 'MPA', (123, 131)) ('mutations', 'Var', (74, 83)) ('affected', 'Reg', (110, 118)) ('SDHx', 'Chemical', '-', (69, 73)) ('SDHx', 'Gene', (69, 73)) 87338 31262070 Nevertheless it is still considered a relatively large series and, so far, the largest homogenous series of SDHD and SDHB mutations carriers treated with 90Y DOTATATE PRRT. ('SDHD', 'Gene', '6392', (108, 112)) ('SDHB', 'Gene', (117, 121)) ('DOTATATE', 'Chemical', '-', (158, 166)) ('mutations', 'Var', (122, 131)) ('SDHB', 'Gene', '6390', (117, 121)) ('SDHD', 'Gene', (108, 112)) 87339 31262070 This was an important study evaluating the effect of 90Y DOTATATE in patients with SDHD and SDHB mutations with advanced disease. ('mutations', 'Var', (97, 106)) ('SDHB', 'Gene', '6390', (92, 96)) ('DOTATATE', 'Chemical', '-', (57, 65)) ('SDHB', 'Gene', (92, 96)) ('SDHD', 'Gene', '6392', (83, 87)) ('patients', 'Species', '9606', (69, 77)) ('SDHD', 'Gene', (83, 87)) 87375 30666294 While it is difficult to retrospectively distinguish patients with pre-existing diabetes/pre-diabetes from patients whose diabetes is caused by hyperadrenergism, these effects in sum can result in precipitating overt diabetes mellitus or worsening pre-existing diabetes with remarkable improvement in insulin sensitivity and/or secretory ability following surgical cure of a pheochromocytoma. ('diabetes mellitus', 'Disease', (217, 234)) ('diabetes', 'Disease', (217, 225)) ('improvement', 'PosReg', (286, 297)) ('worsening pre-existing', 'Disease', (238, 260)) ('hyperadrenergism', 'Disease', (144, 160)) ('diabetes', 'Disease', 'MESH:D003920', (93, 101)) ('diabetes', 'Disease', (261, 269)) ('precipitating', 'Reg', (197, 210)) ('insulin', 'Gene', '3630', (301, 308)) ('patients', 'Species', '9606', (53, 61)) ('diabetes mellitus', 'Disease', 'MESH:D003920', (217, 234)) ('diabetes', 'Disease', (80, 88)) ('secretory ability', 'MPA', (328, 345)) ('diabetes mellitus', 'Phenotype', 'HP:0000819', (217, 234)) ('patients', 'Species', '9606', (107, 115)) ('diabetes', 'Disease', 'MESH:D003920', (122, 130)) ('diabetes', 'Disease', (93, 101)) ('diabetes', 'Disease', 'MESH:D003920', (217, 225)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (375, 391)) ('overt', 'Disease', (211, 216)) ('insulin', 'Gene', (301, 308)) ('pheochromocytoma', 'Disease', (375, 391)) ('hyperadrenergism', 'Disease', 'None', (144, 160)) ('diabetes', 'Disease', 'MESH:D003920', (261, 269)) ('pre-existing', 'Disease', (248, 260)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (375, 391)) ('effects', 'Var', (168, 175)) ('diabetes', 'Disease', 'MESH:D003920', (80, 88)) ('overt diabetes mellitus', 'Phenotype', 'HP:0100651', (211, 234)) ('diabetes', 'Disease', (122, 130)) 87426 30623061 The mean age of patients with a non-functional mass (55 +- 11.7) was found to be significantly higher than the mean age of patients who had a functional mass (46 +- 12.50) (P < .001). ('non-functional', 'Var', (32, 46)) ('higher', 'PosReg', (95, 101)) ('patients', 'Species', '9606', (16, 24)) ('patients', 'Species', '9606', (123, 131)) 87477 26837305 Malignancy is often linked to a SDHB mutation. ('SDHB', 'Gene', '6390', (32, 36)) ('mutation', 'Var', (37, 45)) ('SDHB', 'Gene', (32, 36)) ('linked', 'Reg', (20, 26)) ('Malignancy', 'Disease', (0, 10)) ('Malignancy', 'Disease', 'MESH:D009369', (0, 10)) 87548 26837305 Monitoring of blood pressure and annual measurement of serum and urinary metanephrines are recommended (MEN2, VHL, and SDH mutation). ('SDH', 'Gene', (119, 122)) ('VHL', 'Gene', '7428', (110, 113)) ('mutation', 'Var', (123, 131)) ('metanephrines', 'Chemical', 'MESH:D008676', (73, 86)) ('MEN', 'Species', '9606', (104, 107)) ('SDH', 'Gene', '6390', (119, 122)) ('VHL', 'Gene', (110, 113)) 87561 26837305 The most well-defined genetic risk factor for malignant disease is a mutation on the SDHB gene, which is clinically associated with an earlier onset of disease and more aggressive malignancy. ('associated with', 'Reg', (116, 131)) ('mutation', 'Var', (69, 77)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('malignant disease', 'Disease', 'MESH:D009369', (46, 63)) ('aggressive malignancy', 'Disease', 'MESH:D009369', (169, 190)) ('aggressive malignancy', 'Disease', (169, 190)) ('malignant disease', 'Disease', (46, 63)) 87562 26837305 Often, metastatic disease is related to retroperitoneal location (69 %) and is associated with SDHB mutation (72 versus 10 %). ('associated', 'Reg', (79, 89)) ('SDHB', 'Gene', '6390', (95, 99)) ('mutation', 'Var', (100, 108)) ('metastatic disease', 'Disease', (7, 25)) ('SDHB', 'Gene', (95, 99)) 87563 26837305 SDHD mutations are more frequently found in the cephalic or cervical tumors. ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('cephalic or cervical tumors', 'Disease', 'MESH:D002583', (48, 75)) ('tumors', 'Phenotype', 'HP:0002664', (69, 75)) ('mutations', 'Var', (5, 14)) ('cervical tumors', 'Phenotype', 'HP:0030159', (60, 75)) ('cephalic or cervical tumors', 'Disease', (48, 75)) ('SDHD', 'Gene', '6392', (0, 4)) ('SDHD', 'Gene', (0, 4)) ('found', 'Reg', (35, 40)) 87565 26837305 Children with a cervical spine tumor should primarily benefit from analysis of the SDHD gene and those with metastatic retroperitoneal form from a study of SDHB. ('analysis', 'Var', (67, 75)) ('SDHB', 'Gene', '6390', (156, 160)) ('Children', 'Species', '9606', (0, 8)) ('tumor', 'Phenotype', 'HP:0002664', (31, 36)) ('benefit', 'Reg', (54, 61)) ('spine tumor', 'Phenotype', 'HP:0010302', (25, 36)) ('SDHB', 'Gene', (156, 160)) ('tumor', 'Disease', (31, 36)) ('SDHD', 'Gene', '6392', (83, 87)) ('tumor', 'Disease', 'MESH:D009369', (31, 36)) ('SDHD', 'Gene', (83, 87)) 87585 26837305 Chemotherapy can cause hypertensive crisis, and preventive treatment must always precede the first course. ('hypertensive', 'Disease', 'MESH:D006973', (23, 35)) ('cause', 'Reg', (17, 22)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (23, 42)) ('Chemotherapy', 'Var', (0, 12)) ('hypertensive', 'Disease', (23, 35)) 87680 23955600 Gene-centric CNV analysis of 24 cases identified a list of 104 genes most significantly targeted by tumor-associated alterations. ('alterations', 'Var', (117, 128)) ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('tumor', 'Disease', (100, 105)) ('tumor', 'Disease', 'MESH:D009369', (100, 105)) ('rat', 'Species', '10116', (121, 124)) 87684 23955600 Furthermore, lentiviral transduction of miR-200s and miR-34s in patient-derived primary tympano-jugular paraganglioma cell cultures was associated with NOTCH1 downregulation and increased levels of markers of cell toxicity and cell death. ('miR', 'Gene', '220972', (53, 56)) ('NOTCH1', 'Gene', (152, 158)) ('miR-34', 'Gene', '407040', (53, 59)) ('paraganglioma', 'Phenotype', 'HP:0002668', (104, 117)) ('primary tympano-jugular paraganglioma', 'Phenotype', 'HP:0006715', (80, 117)) ('toxicity', 'Disease', 'MESH:D064420', (214, 222)) ('NOTCH1', 'Gene', '4851', (152, 158)) ('miR', 'Gene', (53, 56)) ('patient', 'Species', '9606', (64, 71)) ('jugular paraganglioma cell', 'Phenotype', 'HP:0003001', (96, 122)) ('cell', 'CPA', (227, 231)) ('toxicity', 'Disease', (214, 222)) ('increased', 'PosReg', (178, 187)) ('miR', 'Gene', '220972', (40, 43)) ('miR-34', 'Gene', (53, 59)) ('lentiviral', 'Var', (13, 23)) ('paraganglioma', 'Disease', (104, 117)) ('miR', 'Gene', (40, 43)) ('paraganglioma', 'Disease', 'MESH:D010235', (104, 117)) ('levels of markers of', 'MPA', (188, 208)) ('downregulation', 'NegReg', (159, 173)) 87704 23955600 Mutations in SDHAF2, which may contribute to PGL in patients negative for mutations in SDHB, SDHC and SDHD, were investigated only in the 9 cases analyzed at Florence. ('SDHAF2', 'Gene', '54949', (13, 19)) ('mutations', 'Var', (74, 83)) ('SDHD', 'Gene', (102, 106)) ('SDHD', 'Gene', '6392', (102, 106)) ('SDHC', 'Gene', (93, 97)) ('Mutations', 'Var', (0, 9)) ('patients', 'Species', '9606', (52, 60)) ('SDHC', 'Gene', '6391', (93, 97)) ('contribute', 'Reg', (31, 41)) ('SDHB', 'Gene', '6390', (87, 91)) ('SDHB', 'Gene', (87, 91)) ('SDHAF2', 'Gene', (13, 19)) 87711 23955600 Commercial real-time qPCR assays (Life Technologies) were used to validate the CNVs in the JAG2, HES5, CTBP1, AKIRIN1, IDUA and PHACTR4 genes. ('CNVs', 'Var', (79, 83)) ('AKIRIN1', 'Gene', '79647', (110, 117)) ('CTBP1', 'Gene', '1487', (103, 108)) ('HES5', 'Gene', '388585', (97, 101)) ('IDUA', 'Gene', (119, 123)) ('HES5', 'Gene', (97, 101)) ('IDUA', 'Gene', '3425', (119, 123)) ('JAG2', 'Gene', (91, 95)) ('CTBP1', 'Gene', (103, 108)) ('PHACTR4', 'Gene', (128, 135)) ('AKIRIN1', 'Gene', (110, 117)) ('PHACTR4', 'Gene', '65979', (128, 135)) 87721 23955600 SDHB IHC, a surrogate marker for mutations in any of the PGL-associated SDH subunit genes, was performed using a commercial mouse monoclonal antibody (ABCAM ab14714, clone 21A11, diluted 1/3,000, antigen retrieval at 100 C in citrate buffer, pH 6 for 30 min). ('citrate', 'Chemical', 'MESH:D019343', (227, 234)) ('SDH', 'Gene', (0, 3)) ('SDH', 'Gene', '6390', (72, 75)) ('mutations', 'Var', (33, 42)) ('mouse', 'Species', '10090', (124, 129)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDH', 'Gene', (72, 75)) ('SDHB', 'Gene', (0, 4)) ('SDH', 'Gene', '6390', (0, 3)) ('PGL-associated', 'Gene', (57, 71)) 87758 23955600 Substitutions into the miR-200 and miR-34 binding sites of the NOTCH1 3'UTR were introduced by Quick-Change site-directed mutagenesis (Stratagene) (Supplementary Table 5, Online Resource 1). ('miR-34', 'Gene', (35, 41)) ('miR', 'Gene', '220972', (23, 26)) ('miR', 'Gene', (23, 26)) ('miR-34', 'Gene', '407040', (35, 41)) ('rat', 'Species', '10116', (137, 140)) ('miR', 'Gene', '220972', (35, 38)) ('miR', 'Gene', (35, 38)) ('Substitutions', 'Var', (0, 13)) ('NOTCH1', 'Gene', '4851', (63, 69)) ('NOTCH1', 'Gene', (63, 69)) 87759 23955600 Each well was co-transfected with psiCHECK2 (400 ng) and miRNA precursor or negative control (30 pmol) (NC2, Life Technologies). ('400', 'Var', (45, 48)) ('miR', 'Gene', '220972', (57, 60)) ('miR', 'Gene', (57, 60)) 87789 23955600 Considering that NOTCH signaling activation could be related to SDH gene defects, the PGL cases were analyzed for germline SDH mutations and/or tumor-associated loss of SDHB expression, a surrogate marker for mutations in any of the known PGL-related mitochondrial complex II genes. ('tumor', 'Disease', (144, 149)) ('SDH', 'Gene', (64, 67)) ('SDH', 'Gene', (123, 126)) ('SDHB', 'Gene', '6390', (169, 173)) ('expression', 'MPA', (174, 184)) ('SDHB', 'Gene', (169, 173)) ('SDH', 'Gene', '6390', (169, 172)) ('tumor', 'Disease', 'MESH:D009369', (144, 149)) ('loss', 'NegReg', (161, 165)) ('SDH', 'Gene', '6390', (64, 67)) ('mutations', 'Var', (127, 136)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) ('SDH', 'Gene', (169, 172)) ('SDH', 'Gene', '6390', (123, 126)) 87790 23955600 Germline SDH gene mutation analyses, performed in 34 cases, identified 13 mutation carriers, furthermore CNV analysis identified a large germline deletion/rearrangement of SDHB in one additional case (8PTJ, confirmed by NFMP-HPLC). ('SDHB', 'Gene', (172, 176)) ('SDH', 'Gene', '6390', (9, 12)) ('SDH', 'Gene', (172, 175)) ('deletion/rearrangement', 'Var', (146, 168)) ('SDHB', 'Gene', '6390', (172, 176)) ('SDH', 'Gene', '6390', (172, 175)) ('SDH', 'Gene', (9, 12)) 87791 23955600 The overall frequency of germline mutations in SDHB, SDHC, SDHD and SDHAF2 was 14/35 (40 %); single gene mutation frequencies are detailed in Supplementary Table 9 (Online Resource 1). ('SDHAF2', 'Gene', '54949', (68, 74)) ('SDHC', 'Gene', '6391', (53, 57)) ('SDHB', 'Gene', '6390', (47, 51)) ('SDHB', 'Gene', (47, 51)) ('SDHD', 'Gene', '6392', (59, 63)) ('germline mutations', 'Var', (25, 43)) ('SDHD', 'Gene', (59, 63)) ('SDHC', 'Gene', (53, 57)) ('SDHAF2', 'Gene', (68, 74)) 87793 23955600 SDH mutation status resulted associated to negative SDHB IHC, with 12 SDHB-negative tumors out of 14 tumors from identified SDH gene mutation carriers (85.7 %), versus 6 SDHB-negative tumors out of 20 tumors that tested negative for SDH genes mutations (30 %) (P = 0.0019 by Fisher's exact test; Supplementary Table 9, Online Resource 1). ('SDH', 'Gene', (233, 236)) ('mutation', 'Var', (4, 12)) ('tumors', 'Disease', 'MESH:D009369', (184, 190)) ('SDH', 'Gene', (52, 55)) ('tumors', 'Disease', 'MESH:D009369', (201, 207)) ('tumors', 'Phenotype', 'HP:0002664', (84, 90)) ('SDH', 'Gene', (170, 173)) ('SDH', 'Gene', '6390', (0, 3)) ('SDHB', 'Gene', '6390', (70, 74)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('tumors', 'Disease', (84, 90)) ('SDHB', 'Gene', '6390', (52, 56)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('negative', 'NegReg', (43, 51)) ('SDHB', 'Gene', '6390', (170, 174)) ('SDHB', 'Gene', (70, 74)) ('SDH', 'Gene', '6390', (124, 127)) ('SDH', 'Gene', (0, 3)) ('SDH', 'Gene', '6390', (70, 73)) ('tumors', 'Phenotype', 'HP:0002664', (184, 190)) ('tumors', 'Disease', 'MESH:D009369', (84, 90)) ('tumors', 'Phenotype', 'HP:0002664', (201, 207)) ('SDH', 'Gene', '6390', (233, 236)) ('tumors', 'Disease', (101, 107)) ('SDHB', 'Gene', (52, 56)) ('mutation', 'Var', (133, 141)) ('SDH', 'Gene', '6390', (52, 55)) ('SDHB', 'Gene', (170, 174)) ('tumor', 'Phenotype', 'HP:0002664', (184, 189)) ('tumors', 'Disease', (184, 190)) ('tumor', 'Phenotype', 'HP:0002664', (201, 206)) ('SDH', 'Gene', '6390', (170, 173)) ('SDH', 'Gene', (124, 127)) ('tumors', 'Disease', (201, 207)) ('SDH', 'Gene', (70, 73)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) 87817 23955600 To test direct interactions with the NOTCH1 3'UTRs, the predicted wild-type and mutant miR-200s and miR-34s target sites of the 3'UTR-NOTCH1 RNA were cloned downstream of the psiCHECK2 Renilla reporter. ('NOTCH1', 'Gene', '4851', (37, 43)) ('NOTCH1', 'Gene', (37, 43)) ('mutant', 'Var', (80, 86)) ('miR-34', 'Gene', '407040', (100, 106)) ('NOTCH1', 'Gene', '4851', (134, 140)) ('NOTCH1', 'Gene', (134, 140)) ('miR', 'Gene', '220972', (100, 103)) ('miR', 'Gene', (100, 103)) ('miR', 'Gene', '220972', (87, 90)) ('miR', 'Gene', (87, 90)) ('miR-34', 'Gene', (100, 106)) 87818 23955600 Then, either the wild type or the mutant forms of the psiCHECK2 3'UTR-NOTCH1 vectors were co-transfected with miRNA mimics into SH-SY5Y cells. ('psiCHECK2', 'Gene', (54, 63)) ('SH-SY5Y', 'CellLine', 'CVCL:0019', (128, 135)) ('NOTCH1', 'Gene', '4851', (70, 76)) ('NOTCH1', 'Gene', (70, 76)) ('miR', 'Gene', (110, 113)) ('mutant', 'Var', (34, 40)) ('miR', 'Gene', '220972', (110, 113)) 87840 23955600 Notably, NOTCH dysregulation is implicated in highly angiogenic neural tumors, including glioblastoma and medulloblastoma, the leading intracranial cancers in adults and children, respectively, as well as neuroblastoma, major neuronal cancer of childhood, which, as PGL and pheochromocytoma, is of paragangliar origin. ('children', 'Species', '9606', (170, 178)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (274, 290)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('neural tumors', 'Disease', (64, 77)) ('intracranial cancers', 'Disease', 'MESH:D009369', (135, 155)) ('neuroblastoma', 'Disease', (205, 218)) ('pheochromocytoma', 'Disease', (274, 290)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (274, 290)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (205, 218)) ('NOTCH dysregulation', 'Var', (9, 28)) ('neuroblastoma', 'Disease', 'MESH:D009447', (205, 218)) ('PGL', 'Disease', (266, 269)) ('implicated', 'Reg', (32, 42)) ('neuronal cancer', 'Disease', 'MESH:D009369', (226, 241)) ('neuronal cancer', 'Disease', (226, 241)) ('glioblastoma', 'Disease', 'MESH:D005909', (89, 101)) ('cancers', 'Phenotype', 'HP:0002664', (148, 155)) ('intracranial cancers', 'Disease', (135, 155)) ('medulloblastoma', 'Disease', 'MESH:D008527', (106, 121)) ('glioblastoma', 'Disease', (89, 101)) ('medulloblastoma', 'Phenotype', 'HP:0002885', (106, 121)) ('cancer', 'Phenotype', 'HP:0002664', (148, 154)) ('glioblastoma', 'Phenotype', 'HP:0012174', (89, 101)) ('medulloblastoma', 'Disease', (106, 121)) ('cancer', 'Phenotype', 'HP:0002664', (235, 241)) ('neural tumors', 'Disease', 'MESH:C536149', (64, 77)) 87844 23955600 NOTCH1 has been shown to have oncogenic roles in glial tumors and its activation may be triggered by several mechanisms, including rearrangements and activating mutations. ('glial tumors', 'Disease', 'MESH:D005910', (49, 61)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('rearrangements', 'Var', (131, 145)) ('tumors', 'Phenotype', 'HP:0002664', (55, 61)) ('glial tumors', 'Disease', (49, 61)) ('NOTCH1', 'Gene', '4851', (0, 6)) ('NOTCH1', 'Gene', (0, 6)) ('activation', 'PosReg', (70, 80)) 87845 23955600 The other NOTCH1 pathway genes targeted by frequent copy number gains illuminate a molecular context that may constrain NOTCH signaling towards biological effects relevant for PGL tumorigenesis. ('tumor', 'Disease', 'MESH:D009369', (180, 185)) ('tumor', 'Phenotype', 'HP:0002664', (180, 185)) ('tumor', 'Disease', (180, 185)) ('copy number gains', 'Var', (52, 69)) ('NOTCH1', 'Gene', '4851', (10, 16)) ('NOTCH1', 'Gene', (10, 16)) 87868 23955600 The strong mitochondrial immunolabeling, mostly associated with the organelle membrane, is particularly interesting, as NICD1 was previously shown to inhibit BAX multimerization, thus upregulating resistance to apoptosis by nutrient-deprivation and oxidative stress. ('BAX', 'Gene', '581', (158, 161)) ('BAX', 'Gene', (158, 161)) ('NICD1', 'Var', (120, 125)) ('inhibit', 'NegReg', (150, 157)) ('resistance to apoptosis', 'CPA', (197, 220)) ('upregulating', 'PosReg', (184, 196)) ('oxidative stress', 'Phenotype', 'HP:0025464', (249, 265)) 87873 23955600 No differences in NOTCH1 and JAG2 protein expression were observed in the subset of PGLs from ascertained germline SDH mutation carriers compared to cases putatively negative for constitutional SDH mutations. ('SDH', 'Gene', (194, 197)) ('NOTCH1', 'Gene', (18, 24)) ('mutation', 'Var', (119, 127)) ('JAG2', 'Gene', (29, 33)) ('SDH', 'Gene', '6390', (115, 118)) ('SDH', 'Gene', '6390', (194, 197)) ('SDH', 'Gene', (115, 118)) ('NOTCH1', 'Gene', '4851', (18, 24)) 87874 23955600 Furthermore, we found no differences in NOTCH1 and JAG2 protein expression in the subset of PGLs showing SDHB stain loss, indicative of mutations in SDH subunit genes, compared to the SDHB-positive subset. ('SDHB', 'Gene', '6390', (184, 188)) ('SDH', 'Gene', (105, 108)) ('expression', 'MPA', (64, 74)) ('SDHB', 'Gene', '6390', (105, 109)) ('SDH', 'Gene', '6390', (149, 152)) ('SDHB', 'Gene', (184, 188)) ('NOTCH1', 'Gene', '4851', (40, 46)) ('NOTCH1', 'Gene', (40, 46)) ('SDHB', 'Gene', (105, 109)) ('SDH', 'Gene', '6390', (105, 108)) ('SDH', 'Gene', '6390', (184, 187)) ('SDH', 'Gene', (149, 152)) ('mutations', 'Var', (136, 145)) ('loss', 'NegReg', (116, 120)) ('JAG2', 'Gene', (51, 55)) ('SDH', 'Gene', (184, 187)) 87879 23955600 Copy number variation (CNV) and immunomorphological data concur in supporting core role(s) for NOTCH1 and related genes, yet the evidence of protein overexpression also in cases with no proof of relevant CNVs implies that independent mechanisms back up or replace genomic changes as drivers of NOTCH activation. ('protein', 'Protein', (141, 148)) ('Copy', 'Var', (0, 4)) ('NOTCH1', 'Gene', (95, 101)) ('NOTCH1', 'Gene', '4851', (95, 101)) ('overexpression', 'PosReg', (149, 163)) 87893 23955600 As none of these miRNAs were affected by CNVs, altered epigenetic regulation, such as aberrant DNA methylation or histone modifications, could represent a mechanism implicated in their downregulation, a possibility that will have to be investigated in future studies. ('DNA methylation', 'MPA', (95, 110)) ('miR', 'Gene', '220972', (17, 20)) ('miR', 'Gene', (17, 20)) ('histone modifications', 'MPA', (114, 135)) ('epigenetic regulation', 'MPA', (55, 76)) ('aberrant', 'Var', (86, 94)) ('altered', 'Reg', (47, 54)) 87901 22931260 Somatic HIF2alpha gain-of-function mutations in paraganglioma and somatostatinoma associated with polycythemia Hypoxia inducible factors (HIFs) are transcription factors controlling energy, iron metabolism, erythropoiesis, and development, and, when dysregulated, contribute to tumorigenesis, cancer progression, and invasion. ('tumor', 'Phenotype', 'HP:0002664', (278, 283)) ('cancer', 'Disease', 'MESH:D009369', (293, 299)) ('polycythemia', 'Phenotype', 'HP:0001901', (98, 110)) ('paraganglioma', 'Phenotype', 'HP:0002668', (48, 61)) ('iron', 'Chemical', 'MESH:D007501', (190, 194)) ('HIF2alpha', 'Gene', '2034', (8, 17)) ('contribute', 'Reg', (264, 274)) ('somatostatinoma', 'Disease', 'MESH:D013005', (66, 81)) ('somatostatinoma', 'Disease', (66, 81)) ('cancer', 'Disease', (293, 299)) ('polycythemia', 'Disease', (98, 110)) ('tumor', 'Disease', (278, 283)) ('Hypoxia', 'Disease', 'MESH:D000860', (111, 118)) ('polycythemia', 'Disease', 'MESH:D011086', (98, 110)) ('Hypoxia', 'Disease', (111, 118)) ('paraganglioma', 'Disease', (48, 61)) ('cancer', 'Phenotype', 'HP:0002664', (293, 299)) ('gain-of-function', 'PosReg', (18, 34)) ('tumor', 'Disease', 'MESH:D009369', (278, 283)) ('invasion', 'CPA', (317, 325)) ('paraganglioma', 'Disease', 'MESH:D010235', (48, 61)) ('HIF2alpha', 'Gene', (8, 17)) ('mutations', 'Var', (35, 44)) 87902 22931260 However, HIFalpha mutations have not previously been identified in any cancer. ('HIFalpha', 'Gene', (9, 17)) ('cancer', 'Disease', 'MESH:D009369', (71, 77)) ('cancer', 'Disease', (71, 77)) ('cancer', 'Phenotype', 'HP:0002664', (71, 77)) ('mutations', 'Var', (18, 27)) 87903 22931260 Here we report two novel somatic gain-of-function HIF2alpha mutations in two patients, one presenting with a paraganglioma and a second with both paraganglioma and somatostatinoma. ('HIF2alpha', 'Gene', (50, 59)) ('paraganglioma', 'Disease', (109, 122)) ('gain-of-function', 'PosReg', (33, 49)) ('paraganglioma', 'Disease', 'MESH:D010235', (146, 159)) ('paraganglioma and somatostatinoma', 'Disease', 'MESH:D013005', (146, 179)) ('paraganglioma', 'Disease', 'MESH:D010235', (109, 122)) ('patients', 'Species', '9606', (77, 85)) ('paraganglioma', 'Phenotype', 'HP:0002668', (146, 159)) ('HIF2alpha', 'Gene', '2034', (50, 59)) ('mutations', 'Var', (60, 69)) ('paraganglioma', 'Disease', (146, 159)) ('paraganglioma', 'Phenotype', 'HP:0002668', (109, 122)) 87905 22931260 While germline mutations of regulators of HIFalpha, including VHL and EGLN1, have been reported in pheochromocytomas/paragangliomas, this is the first report of a somatic gain-of-function mutation in HIF. ('pheochromocytomas', 'Disease', 'MESH:D010673', (99, 116)) ('pheochromocytomas', 'Disease', (99, 116)) ('EGLN1', 'Gene', '54583', (70, 75)) ('mutation', 'Var', (188, 196)) ('paragangliomas', 'Disease', (117, 131)) ('paragangliomas', 'Disease', 'MESH:D010235', (117, 131)) ('paragangliomas', 'Phenotype', 'HP:0002668', (117, 131)) ('gain-of-function', 'PosReg', (171, 187)) ('paraganglioma', 'Phenotype', 'HP:0002668', (117, 130)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (99, 115)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (99, 116)) ('VHL', 'Gene', (62, 65)) ('EGLN1', 'Gene', (70, 75)) ('HIF', 'Gene', (200, 203)) ('VHL', 'Gene', '7428', (62, 65)) 87911 22931260 showed that about one fourth of these tumors were hereditary, a fraction now closer to one third since the identification of mutations in several additional genes, including SDHA, SDHAF2, TMEM127, and MAX. ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('mutations', 'Var', (125, 134)) ('SDHA', 'Gene', (174, 178)) ('SDHA', 'Gene', '6389', (180, 184)) ('tumors', 'Disease', (38, 44)) ('tumors', 'Phenotype', 'HP:0002664', (38, 44)) ('SDHAF2', 'Gene', '54949', (180, 186)) ('SDHAF2', 'Gene', (180, 186)) ('tumors', 'Disease', 'MESH:D009369', (38, 44)) ('SDHA', 'Gene', (180, 184)) ('TMEM127', 'Gene', (188, 195)) ('SDHA', 'Gene', '6389', (174, 178)) ('TMEM127', 'Gene', '55654', (188, 195)) 87912 22931260 Importantly, the identification of these genetic drivers led to the demonstration of HIFalpha stabilization and dysregulation in pheochromocytoma and paraganglioma tumors harboring mutations in VHL and succinate dehydrogenase (SDH). ('paraganglioma tumors', 'Disease', (150, 170)) ('paraganglioma', 'Phenotype', 'HP:0002668', (150, 163)) ('succinate dehydrogenase', 'Gene', '6390', (202, 225)) ('HIFalpha', 'MPA', (85, 93)) ('SDH', 'Gene', '6390', (227, 230)) ('VHL', 'Gene', (194, 197)) ('dysregulation', 'MPA', (112, 125)) ('pheochromocytoma', 'Disease', (129, 145)) ('succinate dehydrogenase', 'Gene', (202, 225)) ('tumors', 'Phenotype', 'HP:0002664', (164, 170)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (129, 145)) ('VHL', 'Gene', '7428', (194, 197)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (129, 145)) ('SDH', 'Gene', (227, 230)) ('mutations', 'Var', (181, 190)) ('tumor', 'Phenotype', 'HP:0002664', (164, 169)) ('paraganglioma tumors', 'Disease', 'MESH:D010235', (150, 170)) 87915 22931260 Polycythemia, a disease state in which the proportion of blood volume that is occupied by red blood cells increases, can be acquired or congenital; both forms can be primary (abnormality in erythroid progenitors causing increased erythroid proliferation), secondary (mediated by circulating erythropoietin), or related to abnormalities in hypoxia-sensing pathways (increased erythropoietin production and increased sensitivity of progenitors to erythropoietin). ('erythropoietin', 'Gene', (375, 389)) ('increased', 'PosReg', (220, 229)) ('Polycythemia', 'Disease', 'MESH:D011086', (0, 12)) ('erythropoietin', 'Gene', (291, 305)) ('abnormality', 'Var', (175, 186)) ('erythropoietin', 'Gene', (445, 459)) ('Polycythemia', 'Phenotype', 'HP:0001901', (0, 12)) ('hypoxia', 'Disease', (339, 346)) ('increased', 'PosReg', (365, 374)) ('Polycythemia', 'Disease', (0, 12)) ('hypoxia', 'Disease', 'MESH:D000860', (339, 346)) ('erythropoietin', 'Gene', '2056', (375, 389)) ('red blood cells increases', 'Phenotype', 'HP:0001901', (90, 115)) ('increased erythroid proliferation', 'Phenotype', 'HP:0012132', (220, 253)) ('erythropoietin', 'Gene', '2056', (291, 305)) ('erythropoietin', 'Gene', '2056', (445, 459)) 87916 22931260 Germline mutations in VHL, EGLN1, or HIF2alpha result in increased erythropoietin and congenital polycythemia . ('Germline mutations', 'Var', (0, 18)) ('EGLN1', 'Gene', '54583', (27, 32)) ('polycythemia', 'Phenotype', 'HP:0001901', (97, 109)) ('VHL', 'Gene', (22, 25)) ('erythropoietin', 'Gene', (67, 81)) ('VHL', 'Gene', '7428', (22, 25)) ('HIF2alpha', 'Gene', (37, 46)) ('erythropoietin', 'Gene', '2056', (67, 81)) ('congenital polycythemia', 'Disease', 'MESH:D011086', (86, 109)) ('EGLN1', 'Gene', (27, 32)) ('HIF2alpha', 'Gene', '2034', (37, 46)) ('increased', 'PosReg', (57, 66)) ('congenital polycythemia', 'Disease', (86, 109)) 87917 22931260 While mutations of VHL and EGLN1 have been associated with tumorigenesis of neural crest tumors due at least in part to a dysregulation of HIFalpha, until now no HIF mutations have been identified in these tumors. ('tumors', 'Disease', (89, 95)) ('EGLN1', 'Gene', '54583', (27, 32)) ('tumor', 'Disease', (59, 64)) ('tumors', 'Phenotype', 'HP:0002664', (206, 212)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('dysregulation', 'MPA', (122, 135)) ('EGLN1', 'Gene', (27, 32)) ('tumor', 'Disease', 'MESH:D009369', (59, 64)) ('tumor', 'Phenotype', 'HP:0002664', (206, 211)) ('tumors', 'Disease', 'MESH:D009369', (89, 95)) ('tumors', 'Disease', (206, 212)) ('mutations', 'Var', (6, 15)) ('tumor', 'Disease', (89, 94)) ('neural crest tumors', 'Disease', (76, 95)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) ('VHL', 'Gene', (19, 22)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) ('tumors', 'Disease', 'MESH:D009369', (206, 212)) ('associated', 'Reg', (43, 53)) ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('neural crest tumors', 'Disease', 'MESH:C536408', (76, 95)) ('tumor', 'Disease', (206, 211)) ('VHL', 'Gene', '7428', (19, 22)) ('tumor', 'Disease', 'MESH:D009369', (206, 211)) 87918 22931260 In this study, we have identified two novel somatic gain-of-function mutations in the HIF2alpha gene in multiple tumors from patients presenting with paraganglioma and somatostatinoma associated with polycythemia. ('patients', 'Species', '9606', (125, 133)) ('mutations', 'Var', (69, 78)) ('polycythemia', 'Phenotype', 'HP:0001901', (200, 212)) ('paraganglioma', 'Phenotype', 'HP:0002668', (150, 163)) ('tumors', 'Disease', (113, 119)) ('tumors', 'Disease', 'MESH:D009369', (113, 119)) ('polycythemia', 'Disease', 'MESH:D011086', (200, 212)) ('tumors', 'Phenotype', 'HP:0002664', (113, 119)) ('HIF2alpha', 'Gene', '2034', (86, 95)) ('gain-of-function', 'PosReg', (52, 68)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('paraganglioma and somatostatinoma', 'Disease', 'MESH:D013005', (150, 183)) ('polycythemia', 'Disease', (200, 212)) ('HIF2alpha', 'Gene', (86, 95)) 87919 22931260 These particular mutations disrupt prolyl hydroxylation of HIF2alpha, and in turn recognition by the VHL protein, resulting in a failure of HIF2alpha ubiquitination and degradation. ('VHL', 'Gene', (101, 104)) ('degradation', 'MPA', (169, 180)) ('disrupt', 'NegReg', (27, 34)) ('VHL', 'Gene', '7428', (101, 104)) ('HIF2alpha', 'Gene', '2034', (59, 68)) ('HIF2alpha', 'Gene', '2034', (140, 149)) ('prolyl', 'Chemical', '-', (35, 41)) ('prolyl hydroxylation', 'MPA', (35, 55)) ('failure', 'NegReg', (129, 136)) ('HIF2alpha', 'Gene', (59, 68)) ('HIF2alpha', 'Gene', (140, 149)) ('mutations', 'Var', (17, 26)) ('ubiquitination', 'MPA', (150, 164)) 87920 22931260 Because these mutant HIF2alpha proteins have a longer half-life, targets downstream of HIF2alpha, including erythropoietin, are upregulated, leading to polycythemia. ('polycythemia', 'Phenotype', 'HP:0001901', (152, 164)) ('polycythemia', 'Disease', 'MESH:D011086', (152, 164)) ('erythropoietin', 'Gene', '2056', (108, 122)) ('mutant', 'Var', (14, 20)) ('HIF2alpha', 'Gene', '2034', (21, 30)) ('HIF2alpha', 'Gene', '2034', (87, 96)) ('polycythemia', 'Disease', (152, 164)) ('erythropoietin', 'Gene', (108, 122)) ('HIF2alpha', 'Gene', (87, 96)) ('upregulated', 'PosReg', (128, 139)) ('HIF2alpha', 'Gene', (21, 30)) ('leading to', 'Reg', (141, 151)) ('proteins', 'Protein', (31, 39)) 87921 22931260 Our findings suggest the multiple phenotypes in these patients may represent an acquired disease syndrome initiated by gain-of-function mutations in HIF2alpha. ('HIF2alpha', 'Gene', (149, 158)) ('patients', 'Species', '9606', (54, 62)) ('gain-of-function', 'PosReg', (119, 135)) ('mutations', 'Var', (136, 145)) ('HIF2alpha', 'Gene', '2034', (149, 158)) ('acquired disease syndrome', 'Disease', 'MESH:D003638', (80, 105)) ('acquired disease syndrome', 'Disease', (80, 105)) 87946 22931260 The primer sets used were EDN1 (Origene HP205717), EPO (Origene HP200740), GLUT1 (Origene HP209446), VEGFA (Qiagen QT01682072), and beta-Actin (Promega G5740). ('EPO', 'Gene', (51, 54)) ('GLUT1', 'Gene', (75, 80)) ('Origene HP200740', 'Var', (56, 72)) ('beta-Actin', 'Gene', (132, 142)) ('GLUT1', 'Gene', '6513', (75, 80)) ('VEGFA', 'Gene', (101, 106)) ('Origene HP205717', 'Var', (32, 48)) ('EDN1', 'Gene', (26, 30)) ('EDN1', 'Gene', '1906', (26, 30)) ('beta-Actin', 'Gene', '728378', (132, 142)) ('Origene HP209446', 'Var', (82, 98)) ('EPO', 'Gene', '2056', (51, 54)) ('VEGFA', 'Gene', '7422', (101, 106)) 87951 22931260 In patient 1, both the paraganglioma and somatostatinoma were found to have an identical G to A substitution at base 1588 in exon 12 of the HIF2alpha gene. ('paraganglioma', 'Phenotype', 'HP:0002668', (23, 36)) ('HIF2alpha', 'Gene', '2034', (140, 149)) ('patient', 'Species', '9606', (3, 10)) ('substitution at base 1588', 'Var', (96, 121)) ('paraganglioma and somatostatinoma', 'Disease', 'MESH:D013005', (23, 56)) ('HIF2alpha', 'Gene', (140, 149)) 87952 22931260 In patient 2, the paraganglioma was found to have a C to T substitution at base 1589 in exon 12 of HIF2alpha. ('paraganglioma', 'Disease', 'MESH:D010235', (18, 31)) ('HIF2alpha', 'Gene', '2034', (99, 108)) ('patient', 'Species', '9606', (3, 10)) ('C to T substitution at base 1589', 'Var', (52, 84)) ('paraganglioma', 'Phenotype', 'HP:0002668', (18, 31)) ('HIF2alpha', 'Gene', (99, 108)) ('paraganglioma', 'Disease', (18, 31)) 87953 22931260 Neither of the mutations, nor other HIF2alpha mutations, was found in the germline DNA. ('mutations', 'Var', (15, 24)) ('HIF2alpha', 'Gene', (36, 45)) ('HIF2alpha', 'Gene', '2034', (36, 45)) 87954 22931260 Both the G1588A and C1589T mutations in HIF2alpha resulted in a substitution of alanine 530 in the HIF2alpha protein, with threonine in patient 1 and valine in patient 2. ('HIF2alpha', 'Gene', '2034', (40, 49)) ('C1589T', 'Var', (20, 26)) ('C1589T', 'Mutation', 'rs779310473', (20, 26)) ('HIF2alpha', 'Gene', '2034', (99, 108)) ('resulted in', 'Reg', (50, 61)) ('patient', 'Species', '9606', (136, 143)) ('HIF2alpha', 'Gene', (40, 49)) ('HIF2alpha', 'Gene', (99, 108)) ('G1588A', 'Mutation', 'rs1185903250', (9, 15)) ('alanine', 'Chemical', 'MESH:D000409', (80, 87)) ('valine', 'Chemical', 'MESH:D014633', (150, 156)) ('patient', 'Species', '9606', (160, 167)) ('threonine', 'Chemical', 'MESH:D013912', (123, 132)) ('alanine 530', 'Var', (80, 91)) ('G1588A', 'Var', (9, 15)) 87955 22931260 Analysis of tumor cDNA from both patients found equal proportions of the mutant and wild-type HIF2alpha alleles and no evidence of aberrant mRNA splicing. ('HIF2alpha', 'Gene', (94, 103)) ('patients', 'Species', '9606', (33, 41)) ('tumor', 'Disease', 'MESH:D009369', (12, 17)) ('HIF2alpha', 'Gene', '2034', (94, 103)) ('mutant', 'Var', (73, 79)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('tumor', 'Disease', (12, 17)) 87956 22931260 Alignments of multiple HIF2alpha peptide sequences indicated that Ala530 is located in the vicinity of the primary hydroxylation site of the HIF2alpha protein and is conserved across different species and other HIF family members (Figure 1D). ('HIF2alpha', 'Gene', '2034', (23, 32)) ('Ala530', 'Var', (66, 72)) ('HIF2alpha', 'Gene', (141, 150)) ('HIF2alpha', 'Gene', (23, 32)) ('HIF2alpha', 'Gene', '2034', (141, 150)) ('Ala530', 'Chemical', '-', (66, 72)) 87957 22931260 Amino acid substitution of Ala530 is likely to affect the conformation of the HIF2alpha hydroxylation domain and possibly interfere with prolyl hydroxylase recognition and VHL binding. ('HIF2alpha', 'Gene', '2034', (78, 87)) ('Amino acid substitution', 'Var', (0, 23)) ('conformation', 'MPA', (58, 70)) ('Ala530', 'Gene', (27, 33)) ('interfere', 'NegReg', (122, 131)) ('prolyl hydroxylase recognition', 'MPA', (137, 167)) ('HIF2alpha', 'Gene', (78, 87)) ('affect', 'Reg', (47, 53)) ('binding', 'Interaction', (176, 183)) ('Ala530', 'Chemical', '-', (27, 33)) ('VHL', 'Gene', (172, 175)) ('VHL', 'Gene', '7428', (172, 175)) ('prolyl', 'Chemical', '-', (137, 143)) 87962 22931260 To further investigate the impact of the mutations on HIF2alpha signaling, we analyzed the binding of VHL to the HIF2alpha peptide. ('mutations', 'Var', (41, 50)) ('HIF2alpha', 'Gene', '2034', (113, 122)) ('HIF2alpha', 'Gene', (54, 63)) ('HIF2alpha', 'Gene', (113, 122)) ('VHL', 'Gene', (102, 105)) ('HIF2alpha', 'Gene', '2034', (54, 63)) ('VHL', 'Gene', '7428', (102, 105)) ('binding', 'Interaction', (91, 98)) 87965 22931260 Finally, we determined the stability of mutant HIF2alpha using cycloheximide. ('mutant', 'Var', (40, 46)) ('HIF2alpha', 'Gene', '2034', (47, 56)) ('HIF2alpha', 'Gene', (47, 56)) ('cycloheximide', 'Chemical', 'MESH:D003513', (63, 76)) 87968 22931260 Previously, HIFalpha germline mutations have been reported in patients with familial polycythemia, with mutations at hot spots in exon 12 of the HIF2alpha gene. ('familial polycythemia', 'Disease', 'MESH:C536842', (76, 97)) ('HIF2alpha', 'Gene', (145, 154)) ('familial polycythemia', 'Disease', (76, 97)) ('polycythemia', 'Phenotype', 'HP:0001901', (85, 97)) ('reported', 'Reg', (50, 58)) ('HIFalpha', 'Gene', (12, 20)) ('patients', 'Species', '9606', (62, 70)) ('mutations at', 'Var', (104, 116)) ('HIF2alpha', 'Gene', '2034', (145, 154)) 87971 22931260 Dysfunction of the VHL and SDH proteins as a result of gene mutations leads to HIFalpha dysregulation and overexpression and induces pseudo-hypoxia, a mechanism described in the pathogenesis of hereditary pheochromocytomas and paragangliomas. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (205, 221)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (205, 222)) ('VHL', 'Gene', (19, 22)) ('HIFalpha dysregulation', 'Disease', (79, 101)) ('SDH', 'Gene', (27, 30)) ('hypoxia', 'Disease', (140, 147)) ('leads to', 'Reg', (70, 78)) ('overexpression', 'PosReg', (106, 120)) ('HIFalpha dysregulation', 'Disease', 'MESH:D021081', (79, 101)) ('VHL', 'Gene', '7428', (19, 22)) ('hypoxia', 'Disease', 'MESH:D000860', (140, 147)) ('paragangliomas', 'Phenotype', 'HP:0002668', (227, 241)) ('paraganglioma', 'Phenotype', 'HP:0002668', (227, 240)) ('induces', 'Reg', (125, 132)) ('hereditary pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (194, 241)) ('mutations', 'Var', (60, 69)) ('SDH', 'Gene', '6390', (27, 30)) 87972 22931260 Furthermore, altered hydroxylation of proline residues on HIFalpha due to mutations of the prolyl hydroxylase gene can also cause downregulation of HIFalpha, which may also play a role in tumorigenesis. ('tumor', 'Disease', (188, 193)) ('hydroxylation of proline residues', 'MPA', (21, 54)) ('downregulation', 'NegReg', (130, 144)) ('mutations', 'Var', (74, 83)) ('proline', 'Chemical', 'MESH:D011392', (38, 45)) ('tumor', 'Disease', 'MESH:D009369', (188, 193)) ('prolyl', 'Chemical', '-', (91, 97)) ('tumor', 'Phenotype', 'HP:0002664', (188, 193)) ('HIFalpha', 'Gene', (148, 156)) ('altered', 'Reg', (13, 20)) 87974 22931260 We now report somatic gain-of-function HIF2alpha mutations in paragangliomas and somatostatinoma associated clinically with polycythemia. ('gain-of-function', 'PosReg', (22, 38)) ('HIF2alpha', 'Gene', '2034', (39, 48)) ('polycythemia', 'Disease', 'MESH:D011086', (124, 136)) ('mutations', 'Var', (49, 58)) ('paragangliomas', 'Disease', (62, 76)) ('paragangliomas', 'Disease', 'MESH:D010235', (62, 76)) ('HIF2alpha', 'Gene', (39, 48)) ('somatostatinoma', 'Disease', 'MESH:D013005', (81, 96)) ('polycythemia', 'Disease', (124, 136)) ('paragangliomas', 'Phenotype', 'HP:0002668', (62, 76)) ('paraganglioma', 'Phenotype', 'HP:0002668', (62, 75)) ('somatostatinoma', 'Disease', (81, 96)) ('polycythemia', 'Phenotype', 'HP:0001901', (124, 136)) 87980 22931260 The HIF2alpha mutant cells may have then been distributed throughout multiple organs during development. ('mutant', 'Var', (14, 20)) ('HIF2alpha', 'Gene', '2034', (4, 13)) ('HIF2alpha', 'Gene', (4, 13)) 87981 22931260 A similar genetic mechanism can be found in McCune-Albright syndrome, in which a post-zygotic mutation in GNAS1, a protein involved in G protein signaling, presents as a mosaic in only a fraction of cells. ('GNAS1', 'Gene', '2778', (106, 111)) ('McCune-Albright syndrome', 'Disease', 'MESH:D005357', (44, 68)) ('McCune-Albright syndrome', 'Disease', (44, 68)) ('GNAS1', 'Gene', (106, 111)) ('mutation', 'Var', (94, 102)) 87982 22931260 The patients described herein presented with a rare combination of disease phenotypes, yet shared mutations of the same gene at a similar domain. ('mutations', 'Var', (98, 107)) ('presented', 'Reg', (30, 39)) ('patients', 'Species', '9606', (4, 12)) 87983 22931260 Our findings raise several important questions, including (a) whether the HIF2alpha mutation is unique to paraganglioma and somatostinoma associated with polycythemia, and (b) whether patients presenting with paragangliomas or somatostatinomas need to be screened for HIF2alpha mutations. ('paragangliomas', 'Disease', (209, 223)) ('paragangliomas', 'Disease', 'MESH:D010235', (209, 223)) ('paragangliomas', 'Phenotype', 'HP:0002668', (209, 223)) ('patients', 'Species', '9606', (184, 192)) ('somatostatinomas', 'Disease', (227, 243)) ('HIF2alpha', 'Gene', (74, 83)) ('paraganglioma', 'Phenotype', 'HP:0002668', (209, 222)) ('polycythemia', 'Disease', (154, 166)) ('HIF2alpha', 'Gene', '2034', (268, 277)) ('associated', 'Reg', (138, 148)) ('polycythemia', 'Phenotype', 'HP:0001901', (154, 166)) ('somatostatinomas', 'Disease', 'MESH:D013005', (227, 243)) ('paraganglioma and somatostinoma', 'Disease', 'MESH:D010235', (106, 137)) ('polycythemia', 'Disease', 'MESH:D011086', (154, 166)) ('HIF2alpha', 'Gene', (268, 277)) ('HIF2alpha', 'Gene', '2034', (74, 83)) ('paraganglioma', 'Phenotype', 'HP:0002668', (106, 119)) ('mutation', 'Var', (84, 92)) 87995 22323007 Approximately 10% of PCC are malignant, although this frequency is much higher in patients with germline mutations in succinate dehydrogenase subunit B (SDHB). ('SDHB', 'Gene', (153, 157)) ('patients', 'Species', '9606', (82, 90)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (118, 151)) ('mutations', 'Var', (105, 114)) ('higher', 'PosReg', (72, 78)) ('PCC', 'Disease', (21, 24)) ('succinate dehydrogenase subunit B', 'Gene', (118, 151)) ('PCC', 'Phenotype', 'HP:0002666', (21, 24)) ('SDHB', 'Gene', '6390', (153, 157)) 88010 22323007 In addition, a combined double knock-out mouse model was created, inactivating both Pten and Ink4aArf. ('mouse', 'Species', '10090', (41, 46)) ('Pten', 'Gene', (84, 88)) ('Pten', 'Gene', '19211', (84, 88)) ('Ink4aArf', 'Gene', '12578', (93, 101)) ('Ink4aArf', 'Gene', (93, 101)) ('inactivating', 'Var', (66, 78)) 88013 22323007 Only (mono-allelic) inactivation of Pten led to PCC, and co-inactivation of Ink4aArf resulted in earlier tumor presentation and its higher frequency. ('PCC', 'Disease', (48, 51)) ('Pten', 'Gene', (36, 40)) ('Pten', 'Gene', '19211', (36, 40)) ('inactivation', 'Var', (20, 32)) ('tumor', 'Disease', 'MESH:D009369', (105, 110)) ('Ink4aArf', 'Gene', '12578', (76, 84)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('Ink4aArf', 'Gene', (76, 84)) ('tumor', 'Disease', (105, 110)) ('earlier', 'PosReg', (97, 104)) ('PCC', 'Phenotype', 'HP:0002666', (48, 51)) 88024 22323007 Other studies combined the inactivation of Pten with the knock-down of other genes, such as p18Ink4c and p27kip. ('inactivation', 'Var', (27, 39)) ('p27', 'Gene', '12576', (105, 108)) ('Pten', 'Gene', (43, 47)) ('Pten', 'Gene', '19211', (43, 47)) ('p18Ink4c', 'Gene', (92, 100)) ('knock-down', 'Var', (57, 67)) ('p18Ink4c', 'Gene', '12580', (92, 100)) ('p27', 'Gene', (105, 108)) 88034 22323007 Inactivation of the RB gene has been associated with familial and sporadic retinoblastomas, small cell lung carcinomas, and osteosarcomas. ('carcinoma', 'Phenotype', 'HP:0030731', (108, 117)) ('small cell lung carcinomas', 'Disease', (92, 118)) ('sporadic retinoblastomas', 'Disease', (66, 90)) ('sporadic retinoblastomas', 'Disease', 'MESH:D012175', (66, 90)) ('small cell lung carcinomas', 'Disease', 'MESH:D055752', (92, 118)) ('small cell lung carcinomas', 'Phenotype', 'HP:0030357', (92, 118)) ('carcinomas', 'Phenotype', 'HP:0030731', (108, 118)) ('osteosarcomas', 'Disease', (124, 137)) ('osteosarcomas', 'Phenotype', 'HP:0002669', (124, 137)) ('osteosarcomas', 'Disease', 'MESH:D012516', (124, 137)) ('retinoblastomas', 'Phenotype', 'HP:0009919', (75, 90)) ('associated', 'Reg', (37, 47)) ('familial', 'Disease', (53, 61)) ('retinoblastoma', 'Phenotype', 'HP:0009919', (75, 89)) ('Inactivation', 'Var', (0, 12)) 88035 22323007 In addition, inactivation of Rb has also been associated with chromosomal instability, cancer progression, and activation of angiogenesis. ('cancer', 'Disease', (87, 93)) ('angiogenesis', 'CPA', (125, 137)) ('inactivation', 'Var', (13, 25)) ('chromosomal instability', 'Phenotype', 'HP:0040012', (62, 85)) ('cancer', 'Phenotype', 'HP:0002664', (87, 93)) ('chromosomal instability', 'CPA', (62, 85)) ('associated', 'Reg', (46, 56)) ('cancer', 'Disease', 'MESH:D009369', (87, 93)) 88037 22323007 One study investigated heterozygous inactivation of Rb in a conventional knock-out mouse model and demonstrated PCC in 71% of the mice (22 of 31 mice), of which 14% showed bilateral adrenal medulla hyperplasia in approximately half of the mice. ('mice', 'Species', '10090', (130, 134)) ('mouse', 'Species', '10090', (83, 88)) ('rat', 'Species', '10116', (106, 109)) ('adrenal medulla hyperplasia', 'Phenotype', 'HP:0008239', (182, 209)) ('hyperplasia', 'Disease', (198, 209)) ('PCC', 'Phenotype', 'HP:0002666', (112, 115)) ('mice', 'Species', '10090', (145, 149)) ('inactivation', 'Var', (36, 48)) ('mice', 'Species', '10090', (239, 243)) ('hyperplasia', 'Disease', 'MESH:D006965', (198, 209)) 88039 22323007 Another study combined heterozygous inactivation of Rb with homozygous knock-down of p130 and p107. ('p130', 'Gene', (85, 89)) ('p130', 'Gene', '19651', (85, 89)) ('p107', 'Gene', (94, 98)) ('p107', 'Gene', '19650', (94, 98)) ('knock-down', 'Var', (71, 81)) 88042 22323007 A third study investigated an Rb+/- knock-out model in combination with heterozygous or homozygous inactivation of E2f1. ('E2f1', 'Gene', (115, 119)) ('E2f1', 'Gene', '13555', (115, 119)) ('inactivation', 'Var', (99, 111)) 88043 22323007 Adrenal medullary hyperplasia was reported in 46% of the Rb+/- mice, in 52% of the Rb+/-E2f1+/- mice, and in 95% of the Rb+/-E2f1-/- . ('E2f1', 'Gene', (88, 92)) ('hyperplasia', 'Disease', (18, 29)) ('mice', 'Species', '10090', (96, 100)) ('E2f1', 'Gene', '13555', (125, 129)) ('Adrenal medullary hyperplasia', 'Phenotype', 'HP:0008239', (0, 29)) ('mice', 'Species', '10090', (63, 67)) ('Rb+/-', 'Var', (57, 62)) ('E2f1', 'Gene', '13555', (88, 92)) ('hyperplasia', 'Disease', 'MESH:D006965', (18, 29)) ('E2f1', 'Gene', (125, 129)) 88052 22323007 p18INK4C and p27Kip1 belong to the family of cyclin-dependent kinase (CDK) inhibitors, which are classified into two families: The CIP/KIP family members are known to inhibit a variety of cyclin-CDK complexes, whereas INK4 family members specifically inhibit CDK4/CDK6. ('CDK6', 'Gene', '12571', (264, 268)) ('CDK4', 'Gene', (259, 263)) ('CDK4', 'Gene', '12567', (259, 263)) ('p18INK4C', 'Var', (0, 8)) ('inhibit', 'NegReg', (167, 174)) ('inhibit', 'NegReg', (251, 258)) ('CDK6', 'Gene', (264, 268)) ('CIP', 'Disease', (131, 134)) ('cyclin', 'Gene', '18538', (188, 194)) ('cyclin', 'Gene', (188, 194)) ('cyclin', 'Gene', '18538', (45, 51)) ('cyclin', 'Gene', (45, 51)) ('CIP', 'Disease', 'MESH:D010259', (131, 134)) ('p27Kip1', 'Var', (13, 20)) 88053 22323007 p18INK4C has been described as a tumor suppressor gene in human glioblastomas, and p18INK4C mutations have also been demonstrated in RET-mutated PCC. ('demonstrated', 'Reg', (117, 129)) ('PCC', 'Disease', (145, 148)) ('rat', 'Species', '10116', (124, 127)) ('glioblastomas', 'Phenotype', 'HP:0012174', (64, 77)) ('human', 'Species', '9606', (58, 63)) ('tumor', 'Disease', 'MESH:D009369', (33, 38)) ('glioblastomas', 'Disease', 'MESH:D005909', (64, 77)) ('glioblastomas', 'Disease', (64, 77)) ('p18INK4C', 'Gene', (0, 8)) ('tumor', 'Phenotype', 'HP:0002664', (33, 38)) ('mutations', 'Var', (92, 101)) ('p18INK4C', 'Gene', (83, 91)) ('tumor', 'Disease', (33, 38)) ('PCC', 'Phenotype', 'HP:0002666', (145, 148)) 88054 22323007 p18INK4C knock-out mouse models present with organomegaly and a disproportionately enlarged pituitary gland, spleen, thymus, and adrenal gland. ('enlarged pituitary gland', 'Phenotype', 'HP:0012505', (83, 107)) ('organomegaly', 'Disease', 'MESH:D016878', (45, 57)) ('p18INK4C', 'Var', (0, 8)) ('organomegaly', 'Disease', (45, 57)) ('mouse', 'Species', '10090', (19, 24)) 88058 22323007 Mouse and rat models with inactivated or mutated p27Kip1 also presented with a multiple endocrine neoplasia-like syndrome (MEN 4). ('mutated', 'Var', (41, 48)) ('multiple endocrine neoplasia-like syndrome', 'Disease', 'MESH:D009377', (79, 121)) ('neoplasia', 'Phenotype', 'HP:0002664', (98, 107)) ('multiple endocrine neoplasia-like syndrome', 'Disease', (79, 121)) ('MEN 4', 'Gene', '1027', (123, 128)) ('p27Kip1', 'Gene', (49, 56)) ('presented', 'Reg', (62, 71)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (88, 107)) ('Mouse', 'Species', '10090', (0, 5)) ('MEN 4', 'Gene', (123, 128)) ('rat', 'Species', '10116', (10, 13)) 88059 22323007 Both the p27Kip1-/- knock-out mice and the p27Kip1 mutated rats developed pheochromocytomas, the latter of which was in 95% of cases. ('mice', 'Species', '10090', (30, 34)) ('p27Kip1-/-', 'Var', (9, 19)) ('rats', 'Species', '10116', (59, 63)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (74, 91)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (74, 90)) ('pheochromocytomas', 'Disease', (74, 91)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (74, 91)) ('p27Kip1', 'Var', (43, 50)) ('developed', 'PosReg', (64, 73)) 88066 22323007 Recently, germline mutations in the p27KIP1 gene have been associated with a novel type of multiple endocrine neoplasia syndrome type 4 in humans (reviewed extensively by Maroni and Pellegata) but was also found in another study. ('endocrine neoplasia syndrome', 'Disease', (100, 128)) ('p27KIP1', 'Gene', (36, 43)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (100, 119)) ('neoplasia', 'Phenotype', 'HP:0002664', (110, 119)) ('associated', 'Reg', (59, 69)) ('germline mutations', 'Var', (10, 28)) ('endocrine neoplasia syndrome', 'Disease', 'MESH:D009377', (100, 128)) ('humans', 'Species', '9606', (139, 145)) 88069 22323007 Mutations in RET cause the multiple neuroendocrine neoplasia type 2 (MEN 2) syndrome, which is subdivided into MEN 2A and MEN 2B. ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (41, 60)) ('RET', 'Gene', (13, 16)) ('MEN 2B', 'Gene', (122, 128)) ('neoplasia', 'Phenotype', 'HP:0002664', (51, 60)) ('cause', 'Reg', (17, 22)) ('MEN 2B', 'Gene', '5979', (122, 128)) ('neuroendocrine neoplasia', 'Phenotype', 'HP:0100634', (36, 60)) ('Mutations', 'Var', (0, 9)) ('MEN 2A', 'Gene', '5979', (111, 117)) ('MEN 2A', 'Gene', (111, 117)) ('neuroendocrine neoplasia type 2 (MEN 2) syndrome', 'Disease', 'MESH:D018813', (36, 84)) 88071 22323007 Studies have revealed that activation by RET-mutant proteins result in activation of the RAS/RAF/MAPK, and PI3K/AKT pathways. ('PI3K/AKT pathways', 'Pathway', (107, 124)) ('proteins', 'Protein', (52, 60)) ('activation', 'PosReg', (71, 81)) ('RAF', 'Gene', (93, 96)) ('RET-mutant', 'Var', (41, 51)) ('RAF', 'Gene', '387609', (93, 96)) ('activation', 'PosReg', (27, 37)) 88072 22323007 A RETMEN2B transgenic mouse model that has been created to investigate the pathogenic effect of a MEN2B-specific mutation, also developed PCC. ('PCC', 'Phenotype', 'HP:0002666', (138, 141)) ('mutation', 'Var', (113, 121)) ('mouse', 'Species', '10090', (22, 27)) ('transgenic', 'Species', '10090', (11, 21)) ('MEN2B', 'Gene', (5, 10)) ('MEN2B', 'Gene', (98, 103)) ('MEN2B', 'Gene', '5979', (5, 10)) ('PCC', 'Disease', (138, 141)) ('MEN2B', 'Gene', '5979', (98, 103)) 88075 22323007 Germline mutations cause neurofibromatosis type 1, which is characterized by cafe-au-lait spots, Lisch nodules in the eye, fibromatous tumors of the skin, and PCCs at a low frequency (0.1-5.7%). ('cause', 'Reg', (19, 24)) ('Germline mutations', 'Var', (0, 18)) ('fibromatous tumors of the skin', 'Disease', 'MESH:D012878', (123, 153)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('neurofibromatosis type 1', 'Disease', (25, 49)) ('tumors of the skin', 'Phenotype', 'HP:0008069', (135, 153)) ('cafe-au-lait spots', 'Phenotype', 'HP:0000957', (77, 95)) ('Lisch nodules', 'Phenotype', 'HP:0009737', (97, 110)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('fibromatous tumors of the skin', 'Disease', (123, 153)) ('PCC', 'Phenotype', 'HP:0002666', (159, 162)) ('PCCs', 'Phenotype', 'HP:0002666', (159, 163)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (25, 42)) 88076 22323007 A heterozygous Nf1 knock-out mouse model was created, which carried a heterozygous germline mutation in exon 31 that was representative for a mutation found in human NF1 patients. ('patients', 'Species', '9606', (170, 178)) ('Nf1', 'Gene', '18015', (15, 18)) ('mutation in', 'Var', (92, 103)) ('mouse', 'Species', '10090', (29, 34)) ('Nf1', 'Gene', (15, 18)) ('human', 'Species', '9606', (160, 165)) 88081 22323007 The SDHB and SDHD genes encode two subunits of mitochondrial complex II, and inactivating mutations in both genes have been associated with PCCs and PGLs in humans. ('PCCs', 'Phenotype', 'HP:0002666', (140, 144)) ('SDHD', 'Gene', (13, 17)) ('associated', 'Reg', (124, 134)) ('PCC', 'Phenotype', 'HP:0002666', (140, 143)) ('PCCs', 'Disease', (140, 144)) ('SDHB', 'Gene', '6390', (4, 8)) ('PGLs', 'Disease', (149, 153)) ('humans', 'Species', '9606', (157, 163)) ('SDHB', 'Gene', (4, 8)) ('inactivating mutations', 'Var', (77, 99)) 88082 22323007 One study investigated the Sdh activity of heart samples in an Sdhb KO mouse model, heterozygous for a deleterious mutation in the Sdhb gene (exon 2 deletion), and found a 40% decreased activity compared with the heart samples of healthy animals. ('activity', 'MPA', (31, 39)) ('Sdh', 'Gene', (27, 30)) ('Sdhb', 'Gene', '67680', (131, 135)) ('Sdh', 'Gene', '257635', (27, 30)) ('Sdh', 'Gene', (63, 66)) ('activity', 'MPA', (186, 194)) ('decreased', 'NegReg', (176, 185)) ('Sdh', 'Gene', '257635', (63, 66)) ('Sdhb', 'Gene', (63, 67)) ('Sdh', 'Gene', (131, 134)) ('Sdhb', 'Gene', '67680', (63, 67)) ('Sdh', 'Gene', '257635', (131, 134)) ('Sdhb', 'Gene', (131, 135)) ('mutation', 'Var', (115, 123)) ('mouse', 'Species', '10090', (71, 76)) 88084 22323007 In addition, these mice were crossed with H19 knock-out mice, which is postulated as a modifier gene of Sdhd tumorigenesis, to investigate if inactivation of these genes would lead to initiation or enhancement of tumor development. ('tumor', 'Disease', (213, 218)) ('Sdhd', 'Gene', '66925', (104, 108)) ('Sdhd', 'Gene', (104, 108)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('enhancement', 'PosReg', (198, 209)) ('tumor', 'Disease', 'MESH:D009369', (213, 218)) ('inactivation', 'Var', (142, 154)) ('mice', 'Species', '10090', (56, 60)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('tumor', 'Phenotype', 'HP:0002664', (213, 218)) ('mice', 'Species', '10090', (19, 23)) ('tumor', 'Disease', (109, 114)) 88085 22323007 Inactivation of both SDHD alleles resulted in embryonic lethality and of one allele in a healthy phenotype without evidence of PCC or PGL. ('resulted in', 'Reg', (34, 45)) ('PCC', 'Phenotype', 'HP:0002666', (127, 130)) ('SDHD', 'Gene', (21, 25)) ('embryonic lethality', 'Disease', 'MESH:D020964', (46, 65)) ('embryonic lethality', 'Disease', (46, 65)) ('Inactivation', 'Var', (0, 12)) 88088 22323007 Two of these cell cycle-related genes, p18INK4C and p27KIP1, have also been associated with human PCC. ('p18INK4C', 'Var', (39, 47)) ('associated', 'Reg', (76, 86)) ('PCC', 'Phenotype', 'HP:0002666', (98, 101)) ('p27KIP1', 'Var', (52, 59)) ('human', 'Species', '9606', (92, 97)) 88089 22323007 Somatic p18INK4C gene mutations co-occurred with somatic and germline RET mutated PCC and medullary thyroid cancer. ('co-occurred', 'Reg', (32, 43)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (100, 114)) ('thyroid cancer', 'Disease', (100, 114)) ('thyroid cancer', 'Disease', 'MESH:D013964', (100, 114)) ('PCC', 'Disease', (82, 85)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (90, 114)) ('cancer', 'Phenotype', 'HP:0002664', (108, 114)) ('PCC', 'Phenotype', 'HP:0002666', (82, 85)) ('mutations', 'Var', (22, 31)) ('p18INK4C gene', 'Gene', (8, 21)) 88090 22323007 Furthermore, p27KIP1 mutations were associated with the MEN type 4 syndrome, but not with PCC. ('p27KIP1 mutations', 'Var', (13, 30)) ('MEN type 4 syndrome', 'Disease', (56, 75)) ('MEN', 'Species', '9606', (56, 59)) ('associated', 'Reg', (36, 46)) ('PCC', 'Phenotype', 'HP:0002666', (90, 93)) 88091 22323007 Downregulation of p18INK4c and p27KIP1 expression appears an essential step in the tumorigenesis of RET-related tumors, and both genes are regulated by RET, of which downregulation of p18INK4C is through N-Myc. ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('p18INK4C', 'Var', (184, 192)) ('Downregulation', 'NegReg', (0, 14)) ('tumor', 'Disease', (83, 88)) ('tumor', 'Disease', 'MESH:D009369', (112, 117)) ('p18INK4c', 'Gene', (18, 26)) ('p27KIP1', 'Var', (31, 38)) ('tumors', 'Phenotype', 'HP:0002664', (112, 118)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('p18INK4c', 'Gene', '12580', (18, 26)) ('tumor', 'Disease', (112, 117)) ('tumors', 'Disease', 'MESH:D009369', (112, 118)) ('tumor', 'Disease', 'MESH:D009369', (83, 88)) ('downregulation', 'NegReg', (166, 180)) ('tumors', 'Disease', (112, 118)) ('N-Myc', 'Gene', (204, 209)) ('N-Myc', 'Gene', '18109', (204, 209)) 88092 22323007 PTEN mutations have never been associated with PCC in humans, but PTEN is an important key player in regulating the AKT and mammalian target of rapamycin (mTOR) pathways, which are altered in human PCC. ('mTOR', 'Gene', '2475', (155, 159)) ('PTEN', 'Gene', (66, 70)) ('human', 'Species', '9606', (192, 197)) ('mTOR', 'Gene', (155, 159)) ('mutations', 'Var', (5, 14)) ('humans', 'Species', '9606', (54, 60)) ('PCC', 'Phenotype', 'HP:0002666', (198, 201)) ('PCC', 'Phenotype', 'HP:0002666', (47, 50)) ('mammalian target of rapamycin', 'Gene', '2475', (124, 153)) ('mammalian target of rapamycin', 'Gene', (124, 153)) ('PTEN', 'Gene', (0, 4)) ('human', 'Species', '9606', (54, 59)) 88093 22323007 In addition, mutations in patients with PCCs have recently been described in TMEM127, which is a negative regulator of the mTOR pathway and MAX, the MYC-associated factor X gene, which is a tumor suppressor. ('mTOR', 'Gene', (123, 127)) ('tumor', 'Disease', 'MESH:D009369', (190, 195)) ('PCCs', 'Disease', (40, 44)) ('tumor', 'Phenotype', 'HP:0002664', (190, 195)) ('PCC', 'Phenotype', 'HP:0002666', (40, 43)) ('TMEM127', 'Gene', (77, 84)) ('TMEM127', 'Gene', '55654', (77, 84)) ('MYC-associated factor X', 'Gene', '4149', (149, 172)) ('patients', 'Species', '9606', (26, 34)) ('tumor', 'Disease', (190, 195)) ('MYC-associated factor X', 'Gene', (149, 172)) ('mTOR', 'Gene', '2475', (123, 127)) ('mutations', 'Var', (13, 22)) ('PCCs', 'Phenotype', 'HP:0002666', (40, 44)) 88116 22323007 [123I]-MIBG uses similar mechanisms to enter these cells, but importantly, its affinity to NET is lower compare with [18 F]-DA. ('NET', 'Gene', (91, 94)) ('affinity', 'Interaction', (79, 87)) ('123I]-MIBG', 'Chemical', 'MESH:D019797', (1, 11)) ('[123I]-MIBG', 'Var', (0, 11)) ('lower', 'NegReg', (98, 103)) ('NET', 'Gene', '20538', (91, 94)) 88122 22323007 While [18 F]-DA and [18 F]-DOPA PET performed equally well for the detection of ovarian metastatic tumors, [18 F]-DOPA PET showed superiority to [18 F]-DA PET in the detection of hepatic, lung, and subcutaneous tumors. ('[18 F]-DOPA', 'Chemical', 'MESH:C043437', (20, 31)) ('ovarian metastatic tumors', 'Disease', (80, 105)) ('subcutaneous tumors', 'Phenotype', 'HP:0001482', (198, 217)) ('ovarian metastatic tumors', 'Disease', 'MESH:D010051', (80, 105)) ('subcutaneous tumors', 'Disease', 'MESH:D013352', (198, 217)) ('[18 F]-DOPA', 'Chemical', 'MESH:C043437', (107, 118)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('hepatic', 'Disease', (179, 186)) ('tumor', 'Phenotype', 'HP:0002664', (211, 216)) ('[18 F]-DOPA', 'Var', (107, 118)) ('lung', 'Disease', (188, 192)) ('tumors', 'Phenotype', 'HP:0002664', (211, 217)) ('subcutaneous tumors', 'Disease', (198, 217)) ('tumors', 'Phenotype', 'HP:0002664', (99, 105)) 88123 22323007 In particular, subcutaneous tumors were detected only with [18 F]-DOPA PET. ('[18 F]-DOPA', 'Chemical', 'MESH:C043437', (59, 70)) ('subcutaneous tumors', 'Phenotype', 'HP:0001482', (15, 34)) ('subcutaneous tumors', 'Disease', 'MESH:D013352', (15, 34)) ('tumors', 'Phenotype', 'HP:0002664', (28, 34)) ('[18 F]-DOPA', 'Var', (59, 70)) ('subcutaneous tumors', 'Disease', (15, 34)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) 88125 22323007 For example, in patients with malignant paragangliomas due to succinate dehydrogenase subunit B mutations, [18 F]-DA is superior to [18 F]-DOPA for localization of metastases (reverse to the present animal model of PCC), whereas in other patients with so-called head-and-neck paragangliomas, [18 F]-DOPA is superior to [18 F]-DA. ('[18 F]-DOPA', 'Chemical', 'MESH:C043437', (132, 143)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (62, 95)) ('patients', 'Species', '9606', (16, 24)) ('malignant paragangliomas', 'Disease', (30, 54)) ('paragangliomas', 'Disease', 'MESH:D010235', (40, 54)) ('paraganglioma', 'Phenotype', 'HP:0002668', (276, 289)) ('mutations', 'Var', (96, 105)) ('paraganglioma', 'Phenotype', 'HP:0002668', (40, 53)) ('paragangliomas', 'Phenotype', 'HP:0002668', (40, 54)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (30, 54)) ('PCC', 'Phenotype', 'HP:0002666', (215, 218)) ('localization', 'MPA', (148, 160)) ('succinate dehydrogenase subunit B', 'Gene', (62, 95)) ('paragangliomas', 'Disease', 'MESH:D010235', (276, 290)) ('paragangliomas', 'Phenotype', 'HP:0002668', (276, 290)) ('paragangliomas', 'Disease', (40, 54)) ('patients', 'Species', '9606', (238, 246)) ('[18 F]-DOPA', 'Chemical', 'MESH:C043437', (292, 303)) ('metastases', 'Disease', 'MESH:D009362', (164, 174)) ('metastases', 'Disease', (164, 174)) ('paragangliomas', 'Disease', (276, 290)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (271, 290)) 88130 22323007 Elevated norepinephrine levels were also detected in MTT-derived liver tumors compared with normal liver tissue. ('norepinephrine', 'Chemical', 'MESH:D009638', (9, 23)) ('liver tumors', 'Disease', 'MESH:D008113', (65, 77)) ('norepinephrine levels', 'MPA', (9, 30)) ('liver tumors', 'Disease', (65, 77)) ('Elevated', 'PosReg', (0, 8)) ('liver tumors', 'Phenotype', 'HP:0002896', (65, 77)) ('MTT-derived', 'Var', (53, 64)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('MTT', 'Chemical', '-', (53, 56)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('Elevated norepinephrine', 'Phenotype', 'HP:0003345', (0, 23)) 88145 22323007 This treatment could still be used, due to the high specificity for most of human PCCs with all gene mutations, however, in limited number of cases. ('mutations', 'Var', (101, 110)) ('PCCs', 'Phenotype', 'HP:0002666', (82, 86)) ('PCCs', 'Disease', (82, 86)) ('human', 'Species', '9606', (76, 81)) ('PCC', 'Phenotype', 'HP:0002666', (82, 85)) 88147 22323007 The advantage of positive results from [18 F]-DA functional imaging and identifying of NET expression in metastases in the metastatic mouse model allowed utilizing this animal model in experimental treatment through the modification of NET expression in PCC. ('NET', 'Gene', '20538', (236, 239)) ('NET', 'Gene', (236, 239)) ('metastases', 'Disease', (105, 115)) ('modification', 'Var', (220, 232)) ('PCC', 'Gene', (254, 257)) ('NET', 'Gene', '20538', (87, 90)) ('metastases', 'Disease', 'MESH:D009362', (105, 115)) ('NET', 'Gene', (87, 90)) ('PCC', 'Phenotype', 'HP:0002666', (254, 257)) ('mouse', 'Species', '10090', (134, 139)) 88148 22323007 One of the most effective treatments for malignant PCC includes [131I]-MIBG that specifically targets chromaffin and PCC cells via the NET. ('NET', 'Gene', (135, 138)) ('chromaffin', 'Chemical', '-', (102, 112)) ('PCC', 'Phenotype', 'HP:0002666', (117, 120)) ('[131I]-MIBG', 'Var', (64, 75)) ('[131I]-MIBG', 'Chemical', 'MESH:D019797', (64, 75)) ('NET', 'Gene', '20538', (135, 138)) ('PCC', 'Phenotype', 'HP:0002666', (51, 54)) 88149 22323007 Unfortunately, only 30% of patients show a tumor response to [131I]-MIBG. ('[131I]-MIBG', 'Var', (61, 72)) ('tumor', 'Disease', 'MESH:D009369', (43, 48)) ('patients', 'Species', '9606', (27, 35)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('tumor', 'Disease', (43, 48)) ('[131I]-MIBG', 'Chemical', 'MESH:D019797', (61, 72)) 88158 22323007 These data support the notion that this approach may be used clinically to augment the therapeutic efficacy of [131I]-MIBG in patients with advanced malignant PCC, paraganglioma, and other related tumors such as neuroblastoma. ('therapeutic efficacy', 'MPA', (87, 107)) ('tumors', 'Disease', 'MESH:D009369', (197, 203)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (212, 225)) ('neuroblastoma', 'Disease', 'MESH:D009447', (212, 225)) ('paraganglioma', 'Phenotype', 'HP:0002668', (164, 177)) ('tumors', 'Phenotype', 'HP:0002664', (197, 203)) ('neuroblastoma', 'Disease', (212, 225)) ('paraganglioma', 'Disease', (164, 177)) ('[131I]-MIBG', 'Chemical', 'MESH:D019797', (111, 122)) ('patients', 'Species', '9606', (126, 134)) ('tumor', 'Phenotype', 'HP:0002664', (197, 202)) ('PCC', 'Phenotype', 'HP:0002666', (159, 162)) ('augment', 'PosReg', (75, 82)) ('tumors', 'Disease', (197, 203)) ('[131I]-MIBG', 'Var', (111, 122)) ('paraganglioma', 'Disease', 'MESH:D010235', (164, 177)) 88166 22323007 Inhibition of PP2A was associated with prevention of G1/S phase arrest by p53 and of mitotic arrest mediated by polo-like kinase 1 (Plk-1). ('Plk-1', 'Gene', (132, 137)) ('polo-like kinase 1', 'Gene', '18817', (112, 130)) ('mitotic arrest', 'Disease', 'MESH:D006323', (85, 99)) ('G1/S phase arrest', 'CPA', (53, 70)) ('prevention', 'NegReg', (39, 49)) ('polo-like kinase 1', 'Gene', (112, 130)) ('p53', 'Gene', (74, 77)) ('Plk-1', 'Gene', '18817', (132, 137)) ('PP2A', 'Gene', (14, 18)) ('Inhibition', 'Var', (0, 10)) ('p53', 'Gene', '22059', (74, 77)) ('mitotic arrest', 'Disease', (85, 99)) ('PP2A', 'Gene', '19052', (14, 18)) 88167 22323007 The elimination of DNA damage-induced defense mechanisms, through transient pharmacologic inhibition of PP2A, is proposed as a new approach for enhancing the efficacy of non-specific cancer chemotherapy regimens against a broad spectrum of low growth fraction tumors very commonly resistant to cytotoxic drugs. ('low growth fraction tumors very', 'Disease', (240, 271)) ('cancer', 'Disease', (183, 189)) ('low growth fraction tumors very', 'Disease', 'MESH:D009800', (240, 271)) ('enhancing', 'PosReg', (144, 153)) ('tumors', 'Phenotype', 'HP:0002664', (260, 266)) ('low growth', 'Phenotype', 'HP:0001510', (240, 250)) ('cancer', 'Phenotype', 'HP:0002664', (183, 189)) ('inhibition', 'Var', (90, 100)) ('PP2A', 'Gene', (104, 108)) ('tumor', 'Phenotype', 'HP:0002664', (260, 265)) ('PP2A', 'Gene', '19052', (104, 108)) ('cancer', 'Disease', 'MESH:D009369', (183, 189)) 88281 19956719 Mutations of SDHD, the first protein of intermediary metabolism shown to be involved in tumorigenesis, lead to the human tumors paraganglioma (PGL) and pheochromocytoma (PC). ('PGL', 'Disease', (143, 146)) ('paraganglioma', 'Phenotype', 'HP:0002668', (128, 141)) ('tumors paraganglioma', 'Disease', (121, 141)) ('tumor', 'Disease', (121, 126)) ('Mutations', 'Var', (0, 9)) ('tumor', 'Disease', (88, 93)) ('tumor', 'Disease', 'MESH:D009369', (121, 126)) ('tumor', 'Disease', 'MESH:D009369', (88, 93)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (152, 168)) ('tumors', 'Phenotype', 'HP:0002664', (121, 127)) ('SDHD', 'Gene', (13, 17)) ('PGL', 'Disease', 'MESH:D010235', (143, 146)) ('pheochromocytoma', 'Disease', (152, 168)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (152, 168)) ('human', 'Species', '9606', (115, 120)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('lead to', 'Reg', (103, 110)) ('tumors paraganglioma', 'Disease', 'MESH:D010235', (121, 141)) 88283 19956719 Mutations of SDHD show a very high penetrance in man and we postulated that knockout of Sdhd would lead to the development of PGL/PC, probably in aged mice. ('PGL', 'Disease', 'MESH:D010235', (126, 129)) ('mice', 'Species', '10090', (151, 155)) ('lead to', 'Reg', (99, 106)) ('SDHD', 'Gene', (13, 17)) ('Mutations', 'Var', (0, 9)) ('man', 'Species', '9606', (49, 52)) ('PGL', 'Disease', (126, 129)) ('knockout', 'Var', (76, 84)) ('Sdhd', 'Gene', (88, 92)) 88285 19956719 We also crossed this mouse with a knockout of H19, a postulated imprinted modifier gene of Sdhd tumorigenesis, to evaluate if loss of these genes together would lead to the initiation or enhancement of tumor development. ('H19', 'Gene', '14955', (46, 49)) ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('tumor', 'Disease', (202, 207)) ('mouse', 'Species', '10090', (21, 26)) ('enhancement', 'PosReg', (187, 198)) ('tumor', 'Disease', (96, 101)) ('H19', 'Gene', (46, 49)) ('tumor', 'Disease', 'MESH:D009369', (96, 101)) ('tumor', 'Disease', 'MESH:D009369', (202, 207)) ('loss', 'Var', (126, 130)) ('tumor', 'Phenotype', 'HP:0002664', (202, 207)) 88290 19956719 Knockout of Sdhd in the mouse does not result in a disease phenotype. ('mouse', 'Species', '10090', (24, 29)) ('Knockout', 'Var', (0, 8)) ('Sdhd', 'Gene', (12, 16)) 88296 19956719 Mutations of SDHD lead to head and neck paragangliomas (HN-PGL), mainly benign tumors of the carotid body and other parasympathetically innervated paraganglia, but may also lead to tumors of the adrenal medulla (pheochromocytoma) and the sympathetically innervated paraganglia (extra-adrenal paraganglioma), some developing into aggressive metastatic cancers. ('benign tumors of the carotid body', 'Disease', 'MESH:D002345', (72, 105)) ('tumors of the adrenal medulla', 'Phenotype', 'HP:0100642', (181, 210)) ('pheochromocytoma', 'Disease', (212, 228)) ('neck paragangliomas', 'Disease', (35, 54)) ('tumors of the adrenal', 'Disease', 'MESH:D000310', (181, 202)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (212, 228)) ('tumors of the carotid body', 'Phenotype', 'HP:0002668', (79, 105)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) ('HN-PGL', 'Disease', 'MESH:D010235', (56, 62)) ('paragangliomas', 'Phenotype', 'HP:0002668', (40, 54)) ('tumors of the adrenal', 'Disease', (181, 202)) ('paraganglioma', 'Phenotype', 'HP:0002668', (40, 53)) ('cancers', 'Phenotype', 'HP:0002664', (351, 358)) ('cancers', 'Disease', (351, 358)) ('tumors', 'Phenotype', 'HP:0002664', (181, 187)) ('paraganglioma', 'Phenotype', 'HP:0002668', (292, 305)) ('Mutations', 'Var', (0, 9)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (26, 54)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (35, 54)) ('extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (278, 305)) ('SDHD', 'Gene', (13, 17)) ('lead to', 'Reg', (18, 25)) ('benign tumors of the carotid body', 'Disease', (72, 105)) ('cancers', 'Disease', 'MESH:D009369', (351, 358)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) ('HN-PGL', 'Disease', (56, 62)) ('extra-adrenal paraganglioma', 'Disease', (278, 305)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (212, 228)) ('lead to', 'Reg', (173, 180)) 88299 19956719 In contrast to paraganglioma in SDHB and SDHC-linked families, both located on chromosome 1, in SDHD-linked families and in the recently described SDH5 (SDHAF2) family, only a mutation inherited via the paternal line results in tumorigenesis. ('SDHD-linked', 'Disease', 'MESH:C564433', (96, 107)) ('SDH', 'Gene', (147, 150)) ('tumor', 'Disease', 'MESH:D009369', (228, 233)) ('SDHB', 'Gene', (32, 36)) ('SDHAF2', 'Gene', (153, 159)) ('paraganglioma', 'Phenotype', 'HP:0002668', (15, 28)) ('SDH', 'Gene', (96, 99)) ('SDH', 'Gene', (41, 44)) ('SDH', 'Gene', '30956', (147, 150)) ('tumor', 'Phenotype', 'HP:0002664', (228, 233)) ('SDHB', 'Gene', '67680', (32, 36)) ('mutation', 'Var', (176, 184)) ('SDH', 'Gene', (32, 35)) ('SDH', 'Gene', (153, 156)) ('SDHC', 'Gene', (41, 45)) ('SDH', 'Gene', '30956', (96, 99)) ('SDH', 'Gene', '30956', (41, 44)) ('SDH', 'Gene', '30956', (32, 35)) ('paraganglioma', 'Disease', (15, 28)) ('SDHD-linked', 'Disease', (96, 107)) ('SDH', 'Gene', '30956', (153, 156)) ('paraganglioma', 'Disease', 'MESH:D010235', (15, 28)) ('SDHAF2', 'Gene', '66072', (153, 159)) ('tumor', 'Disease', (228, 233)) ('SDHC', 'Gene', '66052', (41, 45)) 88321 19956719 SDHD is a potent human tumor suppressor gene, heterozygous missense and nonsense mutations together with loss of heterozygosity (LOH), resulting in tumorigenesis. ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('nonsense mutations', 'Var', (72, 90)) ('human', 'Species', '9606', (17, 22)) ('tumor', 'Disease', (148, 153)) ('tumor', 'Disease', 'MESH:D009369', (23, 28)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('resulting in', 'Reg', (135, 147)) ('tumor', 'Disease', (23, 28)) ('SDHD', 'Gene', (0, 4)) ('tumor', 'Disease', 'MESH:D009369', (148, 153)) 88330 19956719 Quantitative histological analysis of 39 carotid bodies (1682 serial HE sections) showed a 12% increase in size of the carotid body in Sdhd+/- mice relative to Sdhd+/+, though due to wide variation in the size of the carotid body, this difference was not significant (P = 0.19) (Figure 4). ('size', 'MPA', (107, 111)) ('HE', 'Chemical', 'MESH:D006371', (69, 71)) ('increase', 'PosReg', (95, 103)) ('Sdhd+/-', 'Var', (135, 142)) ('mice', 'Species', '10090', (143, 147)) 88338 19956719 The resulting cohort consisted of 31 Sdhd+/-, H19+/- mice with the deletion inherited via the maternal line, and a similar numbers of controls, including Sdhd+/-; with H19+/- via the paternal line, and Sdhd wt; H19+/- via the maternal line. ('H19', 'Gene', '14955', (46, 49)) ('H19', 'Gene', '14955', (211, 214)) ('mice', 'Species', '10090', (53, 57)) ('deletion', 'Var', (67, 75)) ('H19', 'Gene', (46, 49)) ('H19', 'Gene', (211, 214)) ('H19', 'Gene', '14955', (168, 171)) ('H19', 'Gene', (168, 171)) 88340 19956719 Several cases of striking cardiac hypertrophy were noted but this was probably related to the genetic background or the defect in H19, also being seen in the H19+/- maternal line on an Sdhd wt background. ('H19', 'Gene', (158, 161)) ('cardiac hypertrophy', 'Disease', (26, 45)) ('H19', 'Gene', '14955', (130, 133)) ('H19', 'Gene', '14955', (158, 161)) ('cardiac hypertrophy', 'Disease', 'MESH:D006332', (26, 45)) ('defect', 'Var', (120, 126)) ('cardiac hypertrophy', 'Phenotype', 'HP:0001639', (26, 45)) ('H19', 'Gene', (130, 133)) 88352 19956719 Knockout of orthologous human tumor suppressor genes in mice often results in the development of tumors of different tissue origin to that seen in man. ('man', 'Species', '9606', (26, 29)) ('tumor', 'Disease', 'MESH:D009369', (97, 102)) ('human', 'Species', '9606', (24, 29)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('results in', 'Reg', (67, 77)) ('man', 'Species', '9606', (147, 150)) ('development', 'CPA', (82, 93)) ('tumor', 'Disease', 'MESH:D009369', (30, 35)) ('tumor', 'Disease', (97, 102)) ('mice', 'Species', '10090', (56, 60)) ('Knockout', 'Var', (0, 8)) ('tumors', 'Disease', (97, 103)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('tumors', 'Phenotype', 'HP:0002664', (97, 103)) ('tumors', 'Disease', 'MESH:D009369', (97, 103)) ('tumor', 'Disease', (30, 35)) 88355 19956719 Any morphological changes of Sdhd+/- mice may be confined to a trend to a subtle increase in the size of the carotid body and adrenal medulla. ('increase', 'PosReg', (81, 89)) ('Sdhd+/-', 'Var', (29, 36)) ('mice', 'Species', '10090', (37, 41)) 88367 19956719 Mating of Sdhd+/- mice to the C57BL/6J mouse strain and selection for the Sdhd exon 3 deletion generated C57BL/6J-129P2/Ola Sdhd+/- mice. ('mice', 'Species', '10090', (18, 22)) ('C57BL/6J-129P2/Ola', 'Var', (105, 123)) ('mice', 'Species', '10090', (132, 136)) ('mouse', 'Species', '10090', (39, 44)) ('Sdhd', 'Gene', (74, 78)) ('deletion', 'Var', (86, 94)) 88392 32741965 Tumor Detection Rates in Screening of Individuals with SDHx-related Hereditary Paraganglioma-Pheochromocytoma Syndrome Minimal data exist regarding the efficacy of screening protocols for individuals with SDHx germline pathogenic variants with Hereditary Paraganglioma-Pheochromocytoma Syndrome. ('Hereditary Paraganglioma-Pheochromocytoma Syndrome', 'Disease', (244, 294)) ('SDH', 'Gene', '6390', (55, 58)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('SDHx-related Hereditary Paraganglioma-Pheochromocytoma Syndrome', 'Disease', 'MESH:D010673', (55, 118)) ('variants', 'Var', (230, 238)) ('Hereditary Paraganglioma-Pheochromocytoma Syndrome', 'Disease', 'MESH:D010673', (244, 294)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (255, 268)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (269, 285)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('SDH', 'Gene', '6390', (205, 208)) ('Hereditary Paraganglioma-Pheochromocytoma Syndrome', 'Disease', (68, 118)) ('SDH', 'Gene', (55, 58)) ('Hereditary Paraganglioma-Pheochromocytoma Syndrome', 'Disease', 'MESH:D010673', (68, 118)) ('SDH', 'Gene', (205, 208)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) 88394 32741965 Individuals with germline SDHx pathogenic variants underwent clinical whole-body imaging and biochemical testing. ('variants', 'Var', (42, 50)) ('SDH', 'Gene', '6390', (26, 29)) ('SDH', 'Gene', (26, 29)) 88395 32741965 263 individuals with SDHx germline pathogenic variants completed 491 imaging screens. ('variants', 'Var', (46, 54)) ('SDH', 'Gene', (21, 24)) ('SDH', 'Gene', '6390', (21, 24)) 88396 32741965 Individuals with SDHB germline pathogenic variants were most common (n=188/263, 72%), followed by SDHD (n=35/263, 13%) and SDHC (n=28/263, 11%). ('SDHC', 'Gene', '6391', (123, 127)) ('variants', 'Var', (42, 50)) ('SDHB', 'Gene', '6390', (17, 21)) ('SDHD', 'Gene', '6392', (98, 102)) ('SDHD', 'Gene', (98, 102)) ('SDHB', 'Gene', (17, 21)) ('SDHC', 'Gene', (123, 127)) 88399 32741965 Individuals with SDHD pathogenic variants had the highest tumor detection rate (n=14/35, 40%). ('tumor', 'Phenotype', 'HP:0002664', (58, 63)) ('tumor', 'Disease', (58, 63)) ('SDHD', 'Gene', '6392', (17, 21)) ('SDHD', 'Gene', (17, 21)) ('tumor', 'Disease', 'MESH:D009369', (58, 63)) ('variants', 'Var', (33, 41)) 88404 32741965 Many PGL/PCC are associated with catecholamine excess, leading to hypertension, stroke and even death if undiagnosed. ('stroke', 'Disease', 'MESH:D020521', (80, 86)) ('catecholamine excess', 'MPA', (33, 53)) ('PGL/PCC', 'Var', (5, 12)) ('PGL', 'Phenotype', 'HP:0002668', (5, 8)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (33, 53)) ('associated', 'Reg', (17, 27)) ('PCC', 'Phenotype', 'HP:0002666', (9, 12)) ('stroke', 'Phenotype', 'HP:0001297', (80, 86)) ('hypertension', 'Disease', 'MESH:D006973', (66, 78)) ('death', 'Disease', 'MESH:D003643', (96, 101)) ('stroke', 'Disease', (80, 86)) ('death', 'Disease', (96, 101)) ('catecholamine', 'Chemical', 'MESH:D002395', (33, 46)) ('hypertension', 'Phenotype', 'HP:0000822', (66, 78)) ('hypertension', 'Disease', (66, 78)) ('leading to', 'Reg', (55, 65)) 88408 32741965 Germline PVs in any SDHx gene lead to Hereditary Paraganglioma-Pheochromocytoma Syndromes (OMIM: 614165, 115310, 605373, 168000, 601650) in which individuals have an increased risk for multi-focal primary PGL/PCC, renal cell carcinoma (RCC), and gastrointestinal stromal tumors (GIST). ('lead to', 'Reg', (30, 37)) ('tumor', 'Phenotype', 'HP:0002664', (271, 276)) ('SDH', 'Gene', (20, 23)) ('RCC', 'Disease', 'MESH:C538614', (236, 239)) ('Hereditary Paraganglioma-Pheochromocytoma Syndromes', 'Disease', 'MESH:D010673', (38, 89)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (246, 277)) ('PGL', 'Phenotype', 'HP:0002668', (205, 208)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (246, 277)) ('Germline PVs', 'Var', (0, 12)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (214, 234)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (49, 62)) ('multi-focal primary PGL/PCC', 'Disease', (185, 212)) ('gastrointestinal stromal tumors', 'Disease', (246, 277)) ('GIST', 'Phenotype', 'HP:0100723', (279, 283)) ('SDH', 'Gene', '6390', (20, 23)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (63, 79)) ('RCC', 'Disease', (236, 239)) ('RCC', 'Phenotype', 'HP:0005584', (236, 239)) ('tumors', 'Phenotype', 'HP:0002664', (271, 277)) ('carcinoma', 'Phenotype', 'HP:0030731', (225, 234)) ('renal cell carcinoma', 'Disease', (214, 234)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (214, 234)) ('PCC', 'Phenotype', 'HP:0002666', (209, 212)) 88409 32741965 PVs in each SDHx gene confer a different lifetime-risk for tumor development and predispose to different locations of the PGL/PCC (HNPGL versus thorax/abdomen PGL or PCC) and different risk for metastatic disease, and these estimates are still evolving. ('PGL', 'Phenotype', 'HP:0002668', (133, 136)) ('tumor', 'Disease', (59, 64)) ('PCC', 'Phenotype', 'HP:0002666', (166, 169)) ('predispose to', 'Reg', (81, 94)) ('metastatic disease', 'CPA', (194, 212)) ('PGL', 'Phenotype', 'HP:0002668', (122, 125)) ('SDH', 'Gene', '6390', (12, 15)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) ('PCC', 'Phenotype', 'HP:0002666', (126, 129)) ('PGL', 'Phenotype', 'HP:0002668', (159, 162)) ('tumor', 'Disease', 'MESH:D009369', (59, 64)) ('SDH', 'Gene', (12, 15)) ('PVs', 'Var', (0, 3)) 88419 32741965 The first published study evaluated whole-body MRI in 37 individuals with SDHx variants who underwent 45 whole-body MRIs. ('SDH', 'Gene', (74, 77)) ('variants', 'Var', (79, 87)) ('SDH', 'Gene', '6390', (74, 77)) 88421 32741965 A subsequent study evaluated 42 individuals with SDHx variants with 116 whole-body MRI, and 13 individuals (31 scans) had SDHx-related tumors. ('SDH', 'Gene', '6390', (49, 52)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('SDH', 'Gene', (122, 125)) ('SDH', 'Gene', (49, 52)) ('tumors', 'Disease', (135, 141)) ('tumors', 'Disease', 'MESH:D009369', (135, 141)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('variants', 'Var', (54, 62)) ('SDH', 'Gene', '6390', (122, 125)) 88422 32741965 A third investigation evaluated 92 individuals with SDHB variants, 27 of whom were probands. ('variants', 'Var', (57, 65)) ('SDHB', 'Gene', (52, 56)) ('SDHB', 'Gene', '6390', (52, 56)) 88428 32741965 Each institution had IRB approval for prospective data collection with informed consent or retrospective collection with waiver of consent for reporting de-identified data given feasibility for rare disease and minimal risk (Huntsman Cancer Institute protocol # 46740; University of Michigan protocol # HUM00091004, HUM00024461, HUM00043430; University of Pennsylvania protocol # 812495). ('Pennsylvania', 'Disease', (356, 368)) ('HUM00024461', 'Var', (316, 327)) ('Pennsylvania', 'Disease', 'None', (356, 368)) ('HUM00043430', 'Var', (329, 340)) ('Cancer', 'Disease', (234, 240)) ('Cancer', 'Disease', 'MESH:D009369', (234, 240)) ('Cancer', 'Phenotype', 'HP:0002664', (234, 240)) 88429 32741965 A multi-center retrospective analysis was performed at the Primary Children's Hospital and Family Cancer Assessment Clinic at the Huntsman Cancer Institute at the University of Utah (Salt Lake City, UT, USA), the Michigan Medicine Rogel Cancer Center Cancer Genetics and Endocrine Oncology Clinics (Ann Arbor, MI, USA) and the University of Pennsylvania (Philadelphia, PA, USA) of all individuals with SDHx variants with at least one screen from the start of the screening protocol at each center through March 1, 2018. ('Cancer', 'Disease', (251, 257)) ('Children', 'Species', '9606', (67, 75)) ('Cancer', 'Disease', (139, 145)) ('Cancer', 'Disease', 'MESH:D009369', (237, 243)) ('Cancer', 'Phenotype', 'HP:0002664', (98, 104)) ('Cancer', 'Disease', 'MESH:D009369', (251, 257)) ('variants', 'Var', (407, 415)) ('Cancer', 'Disease', 'MESH:D009369', (139, 145)) ('SDH', 'Gene', '6390', (402, 405)) ('Cancer', 'Disease', (98, 104)) ('Pennsylvania', 'Disease', (341, 353)) ('Endocrine Oncology', 'Phenotype', 'HP:0100568', (271, 289)) ('Cancer', 'Phenotype', 'HP:0002664', (237, 243)) ('Pennsylvania', 'Disease', 'None', (341, 353)) ('SDH', 'Gene', (402, 405)) ('Oncology', 'Phenotype', 'HP:0002664', (281, 289)) ('Cancer', 'Phenotype', 'HP:0002664', (251, 257)) ('Cancer', 'Disease', (237, 243)) ('Cancer', 'Disease', 'MESH:D009369', (98, 104)) ('Cancer', 'Phenotype', 'HP:0002664', (139, 145)) 88430 32741965 A subject was considered an individual with SDHx variant if they had germline clinical genetic testing identifying a known SDHx PV or likely PV (LPV) based on ClinVar or if they were an obligate carrier. ('SDH', 'Gene', (44, 47)) ('SDH', 'Gene', (123, 126)) ('SDH', 'Gene', '6390', (44, 47)) ('variant', 'Var', (49, 56)) ('SDH', 'Gene', '6390', (123, 126)) 88443 32741965 The majority of subjects had germline L/PVs in SDHB (n=188, 71%), followed by SDHD (n=35, 13%) and SDHC (n=28, 11%). ('SDHB', 'Gene', '6390', (47, 51)) ('SDHD', 'Gene', (78, 82)) ('SDHC', 'Gene', '6391', (99, 103)) ('SDHB', 'Gene', (47, 51)) ('SDHD', 'Gene', '6392', (78, 82)) ('L/PVs', 'Var', (38, 43)) ('SDHC', 'Gene', (99, 103)) 88484 32741965 Considerations for cumulative radiation exposure and cost prohibit the regular use of 68Ga-DOTATATE PET/CT for continuous screening; however, more data is needed to determine if it could be an effective baseline screening for individuals with SDHx variants. ('68Ga-DOTATATE', 'Chemical', 'MESH:C513399', (86, 99)) ('variants', 'Var', (248, 256)) ('SDH', 'Gene', '6390', (243, 246)) ('SDH', 'Gene', (243, 246)) 88488 32741965 For example, only 4% of individuals with SDHC variants had tumors identified. ('SDHC', 'Gene', (41, 45)) ('SDHC', 'Gene', '6391', (41, 45)) ('tumors', 'Disease', (59, 65)) ('tumors', 'Disease', 'MESH:D009369', (59, 65)) ('tumors', 'Phenotype', 'HP:0002664', (59, 65)) ('variants', 'Var', (46, 54)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) 88489 32741965 Therefore, following a negative baseline imaging screening in those with SDHC variants, one might consider extending the interval of repeat imaging. ('SDHC', 'Gene', '6391', (73, 77)) ('SDHC', 'Gene', (73, 77)) ('variants', 'Var', (78, 86)) 88490 32741965 On the other hand, given the high rate of tumors detected in individuals with SDHD variants (40%), keeping a biennial screening protocol is likely optimal to ensure early detection. ('variants', 'Var', (83, 91)) ('tumors', 'Disease', (42, 48)) ('tumors', 'Disease', 'MESH:D009369', (42, 48)) ('tumors', 'Phenotype', 'HP:0002664', (42, 48)) ('SDHD', 'Gene', '6392', (78, 82)) ('SDHD', 'Gene', (78, 82)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) 88501 32741965 Third, although our cohort is one of the largest reported, the population of individuals with SDHA and SDHAF2 L/PVs was small, limiting the ability to derive screening recommendations for this population. ('SDHAF2', 'Gene', '54949', (103, 109)) ('SDHA', 'Gene', '6389', (94, 98)) ('SDHAF2', 'Gene', (103, 109)) ('L/PVs', 'Var', (110, 115)) ('SDHA', 'Gene', (103, 107)) ('SDHA', 'Gene', (94, 98)) ('SDHA', 'Gene', '6389', (103, 107)) ('limiting', 'NegReg', (127, 135)) 88506 28043156 Absence of BRAF mutation in pheochromocytoma and paraganglioma Pheochromocytomas and Paragangliomas (PHEO/PARA) are rare endocrine tumors originating from the adrenal medulla. ('PHEO', 'Chemical', '-', (101, 105)) ('paraganglioma', 'Phenotype', 'HP:0002668', (49, 62)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (28, 44)) ('tumors', 'Phenotype', 'HP:0002664', (131, 137)) ('pheochromocytoma', 'Disease', (28, 44)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (28, 44)) ('endocrine tumors originating from the adrenal medulla', 'Phenotype', 'HP:0100642', (121, 174)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (85, 99)) ('Pheochromocytomas and Paragangliomas', 'Disease', 'MESH:D010673', (63, 99)) ('tumors', 'Disease', (131, 137)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (63, 80)) ('paraganglioma', 'Disease', (49, 62)) ('mutation', 'Var', (16, 24)) ('paraganglioma', 'Disease', 'MESH:D010235', (49, 62)) ('tumors', 'Disease', 'MESH:D009369', (131, 137)) ('BRAF', 'Gene', '673', (11, 15)) ('Absence', 'NegReg', (0, 7)) ('BRAF', 'Gene', (11, 15)) 88508 28043156 A recent study has reported the presence of the activating BRAF V600E mutation in PCC, suggesting a role for BRAF activation in tumor development. ('men', 'Species', '9606', (141, 144)) ('tumor', 'Disease', 'MESH:D009369', (128, 133)) ('BRAF', 'Gene', (109, 113)) ('BRAF', 'Gene', '673', (109, 113)) ('PCC', 'Gene', (82, 85)) ('activating', 'PosReg', (48, 58)) ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('BRAF', 'Gene', (59, 63)) ('BRAF', 'Gene', '673', (59, 63)) ('V600E', 'Mutation', 'rs113488022', (64, 69)) ('PCC', 'Gene', '1421', (82, 85)) ('tumor', 'Disease', (128, 133)) ('V600E', 'Var', (64, 69)) 88510 28043156 A cohort of 64 PHEO/PARA were screened for the BRAF V600E mutation using direct Sanger sequencing and QRT-PCR. ('V600E', 'Var', (52, 57)) ('BRAF', 'Gene', (47, 51)) ('PHEO', 'Chemical', '-', (15, 19)) ('BRAF', 'Gene', '673', (47, 51)) ('V600E', 'Mutation', 'rs113488022', (52, 57)) 88511 28043156 All cases investigated displayed wild-type without V600E BRAF mutation Taken together with all previously screened tumors up to date, only 1 V600E BRAF mutation has been found among 427 PCCs. ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('BRAF', 'Gene', '673', (57, 61)) ('V600E', 'Var', (141, 146)) ('V600E', 'Var', (51, 56)) ('BRAF', 'Gene', (57, 61)) ('BRAF', 'Gene', (147, 151)) ('tumors', 'Disease', (115, 121)) ('BRAF', 'Gene', '673', (147, 151)) ('tumors', 'Disease', 'MESH:D009369', (115, 121)) ('PCC', 'Gene', '1421', (186, 189)) ('tumors', 'Phenotype', 'HP:0002664', (115, 121)) ('V600E', 'Mutation', 'rs113488022', (51, 56)) ('V600E', 'Mutation', 'rs113488022', (141, 146)) ('PCC', 'Gene', (186, 189)) 88512 28043156 These findings imply that the V600E BRAF mutation is a rare event in PHEO/PARA. ('PHEO', 'Chemical', '-', (69, 73)) ('BRAF', 'Gene', (36, 40)) ('V600E', 'Mutation', 'rs113488022', (30, 35)) ('BRAF', 'Gene', '673', (36, 40)) ('PHEO/PARA', 'Disease', (69, 78)) ('V600E', 'Var', (30, 35)) 88518 28043156 Human cancers have been associated with more than 30 mutations of the BRAF. ('Human', 'Species', '9606', (0, 5)) ('associated', 'Reg', (24, 34)) ('cancer', 'Phenotype', 'HP:0002664', (6, 12)) ('mutations', 'Var', (53, 62)) ('cancers', 'Disease', 'MESH:D009369', (6, 13)) ('cancers', 'Phenotype', 'HP:0002664', (6, 13)) ('BRAF', 'Gene', '673', (70, 74)) ('cancers', 'Disease', (6, 13)) ('BRAF', 'Gene', (70, 74)) 88520 28043156 The frequency of BRAF mutations varies widely in human cancers. ('cancers', 'Disease', 'MESH:D009369', (55, 62)) ('cancer', 'Phenotype', 'HP:0002664', (55, 61)) ('human', 'Species', '9606', (49, 54)) ('BRAF', 'Gene', '673', (17, 21)) ('BRAF', 'Gene', (17, 21)) ('mutations', 'Var', (22, 31)) ('cancers', 'Phenotype', 'HP:0002664', (55, 62)) ('cancers', 'Disease', (55, 62)) 88523 28043156 To date, only one study has identified a BRAF mutation with an incidence of 1,2% (1/85) in pheochromocytoma and paraganglioma (PHEO/PGL). ('pheochromocytoma', 'Phenotype', 'HP:0002666', (91, 107)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (91, 125)) ('BRAF', 'Gene', '673', (41, 45)) ('PHEO', 'Chemical', '-', (127, 131)) ('BRAF', 'Gene', (41, 45)) ('mutation', 'Var', (46, 54)) ('paraganglioma', 'Phenotype', 'HP:0002668', (112, 125)) 88524 28043156 Paulson et al, summarized data from other studies and did not found V600E BRAF mutation in 0,3% (1/336) PHEO/PGL tumors. ('V600E', 'Var', (68, 73)) ('PGL tumors', 'Disease', 'MESH:D010235', (109, 119)) ('BRAF', 'Gene', (74, 78)) ('BRAF', 'Gene', '673', (74, 78)) ('PGL tumors', 'Disease', (109, 119)) ('V600E', 'Mutation', 'rs113488022', (68, 73)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('PHEO', 'Chemical', '-', (104, 108)) ('tumors', 'Phenotype', 'HP:0002664', (113, 119)) 88525 28043156 Similary to neuroblastoma which have incidence of BRAF mutation about 1%, PHEO is also tumor of the adrenal gland that arises from chromaffin cells located in the adrenal medulla. ('BRAF', 'Gene', (50, 54)) ('neuroblastoma', 'Disease', 'MESH:D009447', (12, 25)) ('PHEO', 'Disease', (74, 78)) ('tumor', 'Phenotype', 'HP:0002664', (87, 92)) ('neuroblastoma', 'Disease', (12, 25)) ('tumor', 'Disease', (87, 92)) ('chromaffin', 'Chemical', '-', (131, 141)) ('tumor', 'Disease', 'MESH:D009369', (87, 92)) ('PHEO', 'Chemical', '-', (74, 78)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (12, 25)) ('mutation', 'Var', (55, 63)) ('tumor of the adrenal gland', 'Phenotype', 'HP:0100631', (87, 113)) ('BRAF', 'Gene', '673', (50, 54)) 88529 28043156 Here, we aimed to assess the presence of the BRAF mutation on a large population of PHEOs/PGLs and to further contribute to controversial view whether this mutation may or may not occur in these tumors. ('tumors', 'Disease', (195, 201)) ('tumors', 'Disease', 'MESH:D009369', (195, 201)) ('tumors', 'Phenotype', 'HP:0002664', (195, 201)) ('PHEO', 'Chemical', '-', (84, 88)) ('BRAF', 'Gene', '673', (45, 49)) ('BRAF', 'Gene', (45, 49)) ('tumor', 'Phenotype', 'HP:0002664', (195, 200)) ('mutation', 'Var', (50, 58)) 88530 28043156 Since BRAF mutation is a very good treatment target, the presence of this mutation in some of these tumors could result in the use of B Raf inhibitors of metastatic forms for which there has not been effective treatment so far. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('Raf', 'Gene', '673', (136, 139)) ('tumors', 'Disease', (100, 106)) ('Raf', 'Gene', (136, 139)) ('tumors', 'Disease', 'MESH:D009369', (100, 106)) ('tumors', 'Phenotype', 'HP:0002664', (100, 106)) ('BRAF', 'Gene', '673', (6, 10)) ('presence', 'Var', (57, 65)) ('result in', 'Reg', (113, 122)) ('use', 'MPA', (127, 130)) ('men', 'Species', '9606', (215, 218)) ('men', 'Species', '9606', (40, 43)) ('BRAF', 'Gene', (6, 10)) 88540 28043156 Somatic activating BRAF mutations in exon 15 were investigated in 64 tumor samples. ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('BRAF', 'Gene', '673', (19, 23)) ('tumor', 'Disease', (69, 74)) ('BRAF', 'Gene', (19, 23)) ('activating', 'PosReg', (8, 18)) ('mutations', 'Var', (24, 33)) ('tumor', 'Disease', 'MESH:D009369', (69, 74)) 88541 28043156 Results for V600E BRAF mutation were validated by QRT-PCR. ('V600E', 'Mutation', 'rs113488022', (12, 17)) ('V600E', 'Var', (12, 17)) ('BRAF', 'Gene', (18, 22)) ('BRAF', 'Gene', '673', (18, 22)) 88542 28043156 All of these samples were negative for BRAF mutation in exon 15. ('BRAF', 'Gene', '673', (39, 43)) ('BRAF', 'Gene', (39, 43)) ('mutation', 'Var', (44, 52)) 88543 28043156 In the present study, which included 66 PHEOs/PGL, we did not confirm the presence of any BRAF mutations. ('BRAF', 'Gene', (90, 94)) ('BRAF', 'Gene', '673', (90, 94)) ('PHEO', 'Chemical', '-', (40, 44)) ('mutations', 'Var', (95, 104)) 88544 28043156 This contrasts Luchetti et al., who detected V600E BRAF mutation in 1,2% (1/85) of these tumors. ('tumors', 'Disease', (89, 95)) ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('tumors', 'Disease', 'MESH:D009369', (89, 95)) ('V600E', 'Var', (45, 50)) ('V600E', 'Mutation', 'rs113488022', (45, 50)) ('BRAF', 'Gene', '673', (51, 55)) ('BRAF', 'Gene', (51, 55)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) 88545 28043156 Until now, 427 PHEOs/PGLs were investigated for the presence of a BRAF mutation, which was only found] in 1 of these tumors, suggesting that the BRAF V600E mutation is a extremely rare genetic event in PHEO/PGL and would not serve as a target for new treatment options in metastatic PHEO/PGL. ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('BRAF', 'Gene', (145, 149)) ('tumors', 'Phenotype', 'HP:0002664', (117, 123)) ('PHEO', 'Chemical', '-', (15, 19)) ('tumors', 'Disease', (117, 123)) ('tumors', 'Disease', 'MESH:D009369', (117, 123)) ('men', 'Species', '9606', (256, 259)) ('V600E', 'Mutation', 'rs113488022', (150, 155)) ('PHEO', 'Chemical', '-', (283, 287)) ('BRAF', 'Gene', '673', (66, 70)) ('PHEO', 'Chemical', '-', (202, 206)) ('BRAF', 'Gene', (66, 70)) ('V600E', 'Var', (150, 155)) ('BRAF', 'Gene', '673', (145, 149)) 88547 28043156 Furthermore, additional gene expression studies suggested that most PHEO/PGLs can be classified into two distinct groups (cluster1 and cluster 2) by transcription profiling: cluster 1 includes tumors that harbour mutations in genes linked to pseudohypoxia (VHL, HIF2A, SDHA, SDHB, SDHC, and SDHD) and cluster 2 contains tumors harbouring mutations in genes that are involved in the kinase signalling characterized by the activation of the PIK3/AKT/mTOR and RAS/RAF/ERK pathways (RET, NF1, TMEM127, MAX, and HRAS), both converging on the HIF-signaling pathway. ('NF1', 'Gene', '4763', (484, 487)) ('HRAS', 'Gene', (507, 511)) ('SDHC', 'Gene', '6391', (281, 285)) ('tumors', 'Disease', 'MESH:D009369', (320, 326)) ('SDHB', 'Gene', '6390', (275, 279)) ('PHEO', 'Chemical', '-', (68, 72)) ('ERK', 'Gene', (465, 468)) ('AKT', 'Gene', (444, 447)) ('mTOR', 'Gene', (448, 452)) ('tumors', 'Disease', 'MESH:D009369', (193, 199)) ('NF1', 'Gene', (484, 487)) ('mTOR', 'Gene', '2475', (448, 452)) ('VHL', 'Gene', (257, 260)) ('mutations', 'Var', (213, 222)) ('SDHB', 'Gene', (275, 279)) ('SDHC', 'Gene', (281, 285)) ('PIK3', 'Gene', (439, 443)) ('activation', 'PosReg', (421, 431)) ('pseudohypoxia', 'Disease', (242, 255)) ('AKT', 'Gene', '207', (444, 447)) ('TMEM127', 'Gene', (489, 496)) ('HIF2A', 'Gene', '2034', (262, 267)) ('RAF', 'Gene', (461, 464)) ('SDHD', 'Gene', '6392', (291, 295)) ('SDHA', 'Gene', (269, 273)) ('PIK3', 'Gene', '5294', (439, 443)) ('RAF', 'Gene', '673', (461, 464)) ('pseudohypoxia', 'Disease', 'None', (242, 255)) ('tumors', 'Phenotype', 'HP:0002664', (320, 326)) ('tumors', 'Phenotype', 'HP:0002664', (193, 199)) ('VHL', 'Gene', '7428', (257, 260)) ('HIF2A', 'Gene', (262, 267)) ('SDHA', 'Gene', '6389', (269, 273)) ('tumor', 'Phenotype', 'HP:0002664', (320, 325)) ('ERK', 'Gene', '5594', (465, 468)) ('mutations', 'Var', (338, 347)) ('tumors', 'Disease', (320, 326)) ('SDHD', 'Gene', (291, 295)) ('tumor', 'Phenotype', 'HP:0002664', (193, 198)) ('TMEM127', 'Gene', '55654', (489, 496)) ('HRAS', 'Gene', '3265', (507, 511)) ('tumors', 'Disease', (193, 199)) 88549 28043156 Thus, RET and NF1 mutations lead to activation of the PI3K/AKT/mTOR and RAS/RAF/MAPK signaling pathways. ('mTOR', 'Gene', (63, 67)) ('NF1', 'Gene', '4763', (14, 17)) ('AKT', 'Gene', (59, 62)) ('mTOR', 'Gene', '2475', (63, 67)) ('MAPK', 'Gene', '5594', (80, 84)) ('activation', 'PosReg', (36, 46)) ('RAF', 'Gene', (76, 79)) ('RET', 'Gene', (6, 9)) ('RAF', 'Gene', '673', (76, 79)) ('MAPK', 'Gene', (80, 84)) ('AKT', 'Gene', '207', (59, 62)) ('NF1', 'Gene', (14, 17)) ('mutations', 'Var', (18, 27)) 88550 28043156 Thus, RAS/RAF/MAPK signaling pathways genes are a promising aim of mutations in PHEO/PGL. ('MAPK', 'Gene', '5594', (14, 18)) ('RAF', 'Gene', (10, 13)) ('PHEO/PGL', 'Gene', (80, 88)) ('RAF', 'Gene', '673', (10, 13)) ('PHEO', 'Chemical', '-', (80, 84)) ('MAPK', 'Gene', (14, 18)) ('mutations', 'Var', (67, 76)) 88551 28043156 and other which found somatic HRAS mutation in PHEO/PGL very recently Luchetti et al. ('HRAS', 'Gene', (30, 34)) ('HRAS', 'Gene', '3265', (30, 34)) ('PHEO', 'Chemical', '-', (47, 51)) ('mutation', 'Var', (35, 43)) 88552 28043156 found V600E BRAF mutation in 1,2% (1/85 cases). ('BRAF', 'Gene', '673', (12, 16)) ('V600E', 'Mutation', 'rs113488022', (6, 11)) ('BRAF', 'Gene', (12, 16)) ('V600E', 'Var', (6, 11)) 88553 28043156 We investigated 64 cases without any detection of the V600E BRAF mutation. ('BRAF', 'Gene', (60, 64)) ('V600E', 'Var', (54, 59)) ('BRAF', 'Gene', '673', (60, 64)) ('V600E', 'Mutation', 'rs113488022', (54, 59)) 88554 28043156 In conclusion, our results along with previous results, suggest that the BRAF V600E mutation is an extremely rare genetic event in PHEO/PGL. ('BRAF', 'Gene', '673', (73, 77)) ('PHEO', 'Chemical', '-', (131, 135)) ('V600E', 'Mutation', 'rs113488022', (78, 83)) ('V600E', 'Var', (78, 83)) ('BRAF', 'Gene', (73, 77)) 88625 31773431 With the development of tyrosine kinase inhibitors molecularly matched to oncogenic KIT and PDGFRA mutations, GIST have become a quintessential model for precision oncology. ('KIT', 'Gene', '3815', (84, 87)) ('KIT', 'Gene', (84, 87)) ('GIST', 'Phenotype', 'HP:0100723', (110, 114)) ('mutations', 'Var', (99, 108)) ('oncology', 'Phenotype', 'HP:0002664', (164, 172)) ('PDGFRA', 'Gene', '5156', (92, 98)) ('PDGFRA', 'Gene', (92, 98)) 88626 31773431 However, about 5-10% of GIST lack these driver mutations and are deficient in succinate dehydrogenase (SDH), an enzyme that converts succinate to fumarate. ('succinate dehydrogenase', 'Gene', (78, 101)) ('deficient', 'NegReg', (65, 74)) ('succinate', 'Chemical', 'MESH:D019802', (78, 87)) ('mutations', 'Var', (47, 56)) ('lack', 'NegReg', (29, 33)) ('succinate', 'Chemical', 'MESH:D019802', (133, 142)) ('GIST', 'Phenotype', 'HP:0100723', (24, 28)) ('SDH', 'Gene', (103, 106)) ('fumarate', 'Chemical', 'MESH:D005650', (146, 154)) ('succinate dehydrogenase', 'Gene', '6390', (78, 101)) 88635 31773431 In 1998, gain of function mutations in KIT were identified. ('mutations', 'Var', (26, 35)) ('gain of function', 'PosReg', (9, 25)) ('KIT', 'Gene', '3815', (39, 42)) ('KIT', 'Gene', (39, 42)) 88636 31773431 These mutations activate the receptor tyrosine kinase c-KIT via ligand-independent receptor dimerization, which promotes downstream signaling. ('KIT', 'Gene', '3815', (56, 59)) ('promotes', 'PosReg', (112, 120)) ('KIT', 'Gene', (56, 59)) ('downstream signaling', 'MPA', (121, 141)) ('dimerization', 'Interaction', (92, 104)) ('activate', 'PosReg', (16, 24)) ('mutations', 'Var', (6, 15)) 88638 31773431 We now know that 70-80% of GIST have mutations in KIT or another receptor tyrosine kinase, PDGFRA. ('KIT', 'Gene', '3815', (50, 53)) ('GIST', 'Phenotype', 'HP:0100723', (27, 31)) ('KIT', 'Gene', (50, 53)) ('mutations', 'Var', (37, 46)) ('PDGFRA', 'Gene', (91, 97)) ('PDGFRA', 'Gene', '5156', (91, 97)) 88639 31773431 Tyrosine kinase inhibitors such as imatinib target mutations in KIT and PDGFRA and are the mainstay of treatment. ('mutations', 'Var', (51, 60)) ('PDGFRA', 'Gene', '5156', (72, 78)) ('PDGFRA', 'Gene', (72, 78)) ('KIT', 'Gene', '3815', (64, 67)) ('KIT', 'Gene', (64, 67)) ('imatinib', 'Chemical', 'MESH:D000068877', (35, 43)) 88641 31773431 Further studies of the molecular biology of GIST have identified additional GIST subsets caused by mutations of K/H/N-RAS, BRAF, and NF1, as well as gene fusions of FGFR1 and ETV6-NTRK3. ('GIST', 'Phenotype', 'HP:0100723', (44, 48)) ('NTRK3', 'Gene', '4916', (180, 185)) ('ETV6', 'Gene', '2120', (175, 179)) ('NTRK3', 'Gene', (180, 185)) ('BRAF', 'Gene', (123, 127)) ('BRAF', 'Gene', '673', (123, 127)) ('NF1', 'Gene', (133, 136)) ('FGFR1', 'Gene', (165, 170)) ('N-RAS', 'Gene', (116, 121)) ('FGFR1', 'Gene', '2260', (165, 170)) ('mutations', 'Var', (99, 108)) ('GIST', 'Disease', (76, 80)) ('NF1', 'Gene', '4763', (133, 136)) ('GIST', 'Phenotype', 'HP:0100723', (76, 80)) ('gene fusions', 'Var', (149, 161)) ('N-RAS', 'Gene', '4893', (116, 121)) ('caused', 'Reg', (89, 95)) ('ETV6', 'Gene', (175, 179)) 88642 31773431 Additionally, another 5-10% of GIST have mutations in succinate dehydrogenase (SDH) subunits. ('mutations', 'Var', (41, 50)) ('SDH', 'Gene', (79, 82)) ('GIST', 'Phenotype', 'HP:0100723', (31, 35)) ('succinate dehydrogenase', 'Gene', (54, 77)) ('succinate dehydrogenase', 'Gene', '6390', (54, 77)) 88643 31773431 Mutations in SDH subunits have been linked to a number of cancers. ('cancer', 'Phenotype', 'HP:0002664', (58, 64)) ('SDH', 'Gene', (13, 16)) ('cancers', 'Phenotype', 'HP:0002664', (58, 65)) ('linked to', 'Reg', (36, 45)) ('Mutations', 'Var', (0, 9)) ('cancers', 'Disease', 'MESH:D009369', (58, 65)) ('cancers', 'Disease', (58, 65)) 88647 31773431 However, in our practice of young adults with GIST, we have observed a higher proportion of male patients with SDH mutations (Fanta, Burgoyne, and Sicklick, unpublished data). ('mutations', 'Var', (115, 124)) ('SDH', 'Gene', (111, 114)) ('GIST', 'Phenotype', 'HP:0100723', (46, 50)) ('patients', 'Species', '9606', (97, 105)) 88658 31773431 Bioinformatic analysis of SDH mutated pheochromocytomas and paragangliomas (PPGLs) revealed that these cells become highly dependent on aspartate through increased pyruvate carboxylation. ('paragangliomas', 'Phenotype', 'HP:0002668', (60, 74)) ('aspartate', 'Chemical', 'MESH:D001224', (136, 145)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (38, 74)) ('pyruvate', 'Chemical', 'MESH:D019289', (164, 172)) ('increased pyruvate', 'Phenotype', 'HP:0003542', (154, 172)) ('mutated', 'Var', (30, 37)) ('increased pyruvate carboxylation', 'Phenotype', 'HP:0003209', (154, 186)) ('increased', 'PosReg', (154, 163)) ('paraganglioma', 'Phenotype', 'HP:0002668', (60, 73)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (38, 55)) ('dependent on aspartate', 'MPA', (123, 145)) ('pyruvate carboxylation', 'MPA', (164, 186)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (38, 54)) ('SDH', 'Gene', (26, 29)) 88662 31773431 Tumors with inactivating mutations in SDHx genes lack a functional SDH complex, losing the ability to convert succinate to fumarate. ('succinate', 'Chemical', 'MESH:D019802', (110, 119)) ('fumarate', 'Chemical', 'MESH:D005650', (123, 131)) ('lack', 'NegReg', (49, 53)) ('Tumors', 'Disease', (0, 6)) ('SDHx', 'Gene', (38, 42)) ('inactivating mutations', 'Var', (12, 34)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('ability to convert succinate to fumarate', 'MPA', (91, 131)) ('losing', 'NegReg', (80, 86)) ('SDH', 'Protein', (67, 70)) 88665 31773431 SDHx mutations were first linked to cancer in 2000 when germline mutations in SDHD were reported in hereditary paraganglioma. ('cancer', 'Disease', 'MESH:D009369', (36, 42)) ('hereditary paraganglioma', 'Disease', 'MESH:D010235', (100, 124)) ('SDHD', 'Gene', (78, 82)) ('cancer', 'Disease', (36, 42)) ('mutations', 'Var', (5, 14)) ('SDHD', 'Gene', '6392', (78, 82)) ('hereditary paraganglioma', 'Disease', (100, 124)) ('paraganglioma', 'Phenotype', 'HP:0002668', (111, 124)) ('linked', 'Reg', (26, 32)) ('SDHx', 'Gene', (0, 4)) ('reported', 'Reg', (88, 96)) ('cancer', 'Phenotype', 'HP:0002664', (36, 42)) ('germline mutations', 'Var', (56, 74)) 88666 31773431 Since that time, SDHx mutations have been implicated in a number of tumor types including carcinomas (i.e., renal cell, thyroid) and other neuroendocrine tumors (i.e., neuroblastoma, paraganglioma, pheochromocytoma), as well as GIST. ('carcinoma', 'Phenotype', 'HP:0030731', (90, 99)) ('carcinomas', 'Disease', 'MESH:D009369', (90, 100)) ('carcinomas', 'Phenotype', 'HP:0030731', (90, 100)) ('pheochromocytoma', 'Disease', (198, 214)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (198, 214)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (139, 160)) ('neuroblastoma', 'Disease', (168, 181)) ('implicated', 'Reg', (42, 52)) ('paraganglioma', 'Phenotype', 'HP:0002668', (183, 196)) ('tumor', 'Disease', (154, 159)) ('tumor', 'Disease', (68, 73)) ('GIST', 'Phenotype', 'HP:0100723', (228, 232)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (168, 181)) ('SDHx', 'Gene', (17, 21)) ('tumor', 'Disease', 'MESH:D009369', (154, 159)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('neuroblastoma', 'Disease', 'MESH:D009447', (168, 181)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (139, 160)) ('tumors', 'Phenotype', 'HP:0002664', (154, 160)) ('carcinomas', 'Disease', (90, 100)) ('mutations', 'Var', (22, 31)) ('tumor', 'Phenotype', 'HP:0002664', (154, 159)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('renal cell', 'Disease', (108, 118)) ('paraganglioma', 'Disease', (183, 196)) ('neuroendocrine tumors', 'Disease', (139, 160)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (198, 214)) ('paraganglioma', 'Disease', 'MESH:D010235', (183, 196)) 88667 31773431 Mutations in SDHx result in an accumulation of succinate. ('succinate', 'MPA', (47, 56)) ('SDHx', 'Gene', (13, 17)) ('accumulation', 'PosReg', (31, 43)) ('Mutations', 'Var', (0, 9)) ('succinate', 'Chemical', 'MESH:D019802', (47, 56)) 88683 31773431 In mouse chromaffin cells, SDHB knockdown led to the activation of transcription factors important in EMT, which are also preferentially expressed in PPGLs. ('mouse', 'Species', '10090', (3, 8)) ('activation', 'PosReg', (53, 63)) ('knockdown', 'Var', (32, 41)) ('chromaffin', 'Chemical', '-', (9, 19)) ('preferentially', 'PosReg', (122, 136)) ('SDHB', 'Gene', (27, 31)) ('transcription', 'MPA', (67, 80)) 88686 31773431 Moreover, knockdown of SDHC in breast cancer cells using the CRISPR/Cas9 system induced EMT. ('cancer', 'Phenotype', 'HP:0002664', (38, 44)) ('SDHC', 'Gene', '6391', (23, 27)) ('breast cancer', 'Disease', 'MESH:D001943', (31, 44)) ('EMT', 'CPA', (88, 91)) ('breast cancer', 'Disease', (31, 44)) ('induced', 'PosReg', (80, 87)) ('breast cancer', 'Phenotype', 'HP:0003002', (31, 44)) ('knockdown', 'Var', (10, 19)) ('SDHC', 'Gene', (23, 27)) 88690 31773431 Loss of function mutations of SDHA were first identified in an isolated case of abdominal paraganglioma. ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (80, 103)) ('abdominal paraganglioma', 'Disease', (80, 103)) ('Loss of function', 'NegReg', (0, 16)) ('SDHA', 'Gene', '6389', (30, 34)) ('paraganglioma', 'Phenotype', 'HP:0002668', (90, 103)) ('mutations', 'Var', (17, 26)) ('SDHA', 'Gene', (30, 34)) 88691 31773431 In 2011, sequencing of sporadic non-KIT/PDGFRA-mutated GIST revealed germline mutations in SDHA. ('KIT', 'Gene', '3815', (36, 39)) ('KIT', 'Gene', (36, 39)) ('mutations', 'Var', (78, 87)) ('SDHA', 'Gene', '6389', (91, 95)) ('GIST', 'Phenotype', 'HP:0100723', (55, 59)) ('PDGFRA', 'Gene', (40, 46)) ('SDHA', 'Gene', (91, 95)) ('PDGFRA', 'Gene', '5156', (40, 46)) 88693 31773431 Tumors with SDHA mutations were found to be devoid of mutations in the other SDH subunits. ('SDHA', 'Gene', '6389', (12, 16)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('SDHA', 'Gene', (12, 16)) ('mutations', 'Var', (17, 26)) 88696 31773431 With the increased use of molecular testing and next generation sequencing (NGS), many SDHA variants of unknown significance (VUS) have been identified. ('SDHA', 'Gene', (87, 91)) ('identified', 'Reg', (141, 151)) ('SDHA', 'Gene', '6389', (87, 91)) ('variants', 'Var', (92, 100)) 88697 31773431 In 2017, Bannon and colleagues reported the creation of a yeast model to determine the functional significance of 22 of these variants on mitochondrial function. ('mitochondrial function', 'MPA', (138, 160)) ('yeast', 'Species', '4932', (58, 63)) ('variants', 'Var', (126, 134)) 88698 31773431 Defects of other SDHx genes in non-KIT/PDGFRA mutated GIST were first reported in 2011 by Janeway and colleagues. ('GIST', 'Phenotype', 'HP:0100723', (54, 58)) ('mutated', 'Var', (46, 53)) ('PDGFRA', 'Gene', (39, 45)) ('SDHx genes', 'Gene', (17, 27)) ('PDGFRA', 'Gene', '5156', (39, 45)) ('KIT', 'Gene', '3815', (35, 38)) ('KIT', 'Gene', (35, 38)) 88699 31773431 This group demonstrated germline mutations in SDHB and SDHC lead to deficient SDHB expression, while most KIT-mutated GIST have conserved expression of SDHB protein. ('deficient', 'NegReg', (68, 77)) ('SDHB', 'Gene', (46, 50)) ('SDHC', 'Gene', (55, 59)) ('SDHB', 'Gene', (78, 82)) ('germline', 'Var', (24, 32)) ('KIT', 'Gene', '3815', (106, 109)) ('SDHC', 'Gene', '6391', (55, 59)) ('expression', 'MPA', (83, 93)) ('KIT', 'Gene', (106, 109)) ('GIST', 'Phenotype', 'HP:0100723', (118, 122)) 88702 31773431 Almost 50% of SDH-deficient GIST lack mutations in the genomic sequencing of SDHx subunits. ('SDH-deficient GIST lack', 'Disease', 'MESH:D046152', (14, 37)) ('SDHx', 'Gene', (77, 81)) ('GIST', 'Phenotype', 'HP:0100723', (28, 32)) ('mutations', 'Var', (38, 47)) ('SDH-deficient GIST lack', 'Disease', (14, 37)) 88704 31773431 The frequency of SDHC hypermethylation in non-KIT/PDGFRA-mutated GIST appears to be similar to that of coding mutations in SDHx subunit sequences. ('KIT', 'Gene', '3815', (46, 49)) ('SDHC', 'Gene', (17, 21)) ('SDHC', 'Gene', '6391', (17, 21)) ('KIT', 'Gene', (46, 49)) ('hypermethylation', 'Var', (22, 38)) ('GIST', 'Phenotype', 'HP:0100723', (65, 69)) ('PDGFRA', 'Gene', '5156', (50, 56)) ('PDGFRA', 'Gene', (50, 56)) 88706 31773431 Epigenetic mutations in SDHx are also seen in the Carney Triad, a GIST syndrome in young females notable for development of gastric GIST, pulmonary chondroma, and paraganglioma. ('seen', 'Reg', (38, 42)) ('GIST syndrome', 'Disease', (66, 79)) ('pulmonary chondroma', 'Disease', (138, 157)) ('paraganglioma', 'Disease', 'MESH:D010235', (163, 176)) ('GIST syndrome', 'Disease', 'MESH:D046152', (66, 79)) ('pulmonary chondroma', 'Phenotype', 'HP:0031474', (138, 157)) ('SDHx', 'Gene', (24, 28)) ('GIST', 'Phenotype', 'HP:0100723', (66, 70)) ('paraganglioma', 'Phenotype', 'HP:0002668', (163, 176)) ('GIST', 'Phenotype', 'HP:0100723', (132, 136)) ('Epigenetic mutations', 'Var', (0, 20)) ('paraganglioma', 'Disease', (163, 176)) ('pulmonary chondroma', 'Disease', 'MESH:D002812', (138, 157)) ('Carney Triad', 'Disease', (50, 62)) 88709 31773431 Tumors in these patients exhibit hypermethylation of the SDHC promoter sequence, leading to loss of SDHC protein expression and functional SDH deficiency. ('expression', 'MPA', (113, 123)) ('functional SDH deficiency', 'Disease', (128, 153)) ('SDHC', 'Gene', '6391', (57, 61)) ('SDHC', 'Gene', (100, 104)) ('patients', 'Species', '9606', (16, 24)) ('SDHC', 'Gene', '6391', (100, 104)) ('Tumors', 'Disease', (0, 6)) ('loss', 'NegReg', (92, 96)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('functional SDH deficiency', 'Disease', 'MESH:D015499', (128, 153)) ('hypermethylation', 'Var', (33, 49)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('SDHC', 'Gene', (57, 61)) 88719 31773431 This study was the first to evaluate surgical management of exclusively non-KIT/PDGFRA mutated GISTs. ('KIT', 'Gene', '3815', (76, 79)) ('mutated', 'Var', (87, 94)) ('GIST', 'Phenotype', 'HP:0100723', (95, 99)) ('PDGFRA', 'Gene', (80, 86)) ('KIT', 'Gene', (76, 79)) ('PDGFRA', 'Gene', '5156', (80, 86)) 88742 31773431 This suggests that SDHB mutations may be a biomarker for temozolomide sensitivity in paraganglioma and pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (103, 119)) ('paraganglioma', 'Phenotype', 'HP:0002668', (85, 98)) ('temozolomide', 'Chemical', 'MESH:D000077204', (57, 69)) ('SDHB', 'Gene', (19, 23)) ('paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (85, 119)) ('mutations', 'Var', (24, 33)) 88745 31773431 As discussed above, hypermethylated promoter sequences in the SDHC gene leads to SDH deficiency. ('SDH deficiency', 'Disease', (81, 95)) ('SDHC', 'Gene', (62, 66)) ('SDHC', 'Gene', '6391', (62, 66)) ('leads to', 'Reg', (72, 80)) ('hypermethylated', 'Var', (20, 35)) ('SDH deficiency', 'Disease', 'MESH:D007153', (81, 95)) 88750 31773431 A HIF2alpha small molecule inhibitor, PT2385, has recently been identified and has been shown to act as a transcription factor-specific antagonist, inhibiting the expression of HIF2alpha specific genes. ('PT2385', 'Chemical', 'MESH:C000614279', (38, 44)) ('HIF2alpha', 'Gene', (177, 186)) ('HIF2alpha', 'Gene', (2, 11)) ('HIF2alpha', 'Gene', '2034', (2, 11)) ('expression', 'MPA', (163, 173)) ('HIF2alpha', 'Gene', '2034', (177, 186)) ('inhibiting', 'NegReg', (148, 158)) ('PT2385', 'Var', (38, 44)) 88751 31773431 In mice with renal cell carcinoma, treatment with PT2385 significantly reduced tumor burden. ('tumor', 'Disease', (79, 84)) ('mice', 'Species', '10090', (3, 7)) ('carcinoma', 'Phenotype', 'HP:0030731', (24, 33)) ('renal cell carcinoma', 'Disease', (13, 33)) ('reduced', 'NegReg', (71, 78)) ('PT2385', 'Var', (50, 56)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (13, 33)) ('tumor', 'Disease', 'MESH:D009369', (79, 84)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (13, 33)) ('PT2385', 'Chemical', 'MESH:C000614279', (50, 56)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) 88755 31773431 Subsequently, for non-KIT/PDGFRA mutated GISTs, SDHB immunohistochemistry is recommended. ('KIT', 'Gene', '3815', (22, 25)) ('GIST', 'Phenotype', 'HP:0100723', (41, 45)) ('KIT', 'Gene', (22, 25)) ('mutated', 'Var', (33, 40)) ('PDGFRA', 'Gene', '5156', (26, 32)) ('PDGFRA', 'Gene', (26, 32)) 88759 31773431 Given their predisposition to various cancers, there is a question of whether asymptomatic SDHx mutation carriers require surveillance. ('cancer', 'Phenotype', 'HP:0002664', (38, 44)) ('SDHx', 'Gene', (91, 95)) ('mutation', 'Var', (96, 104)) ('cancers', 'Phenotype', 'HP:0002664', (38, 45)) ('cancers', 'Disease', 'MESH:D009369', (38, 45)) ('cancers', 'Disease', (38, 45)) 88762 31773431 Of note, SDHB mutations are associated higher rates of pheochromocytoma and paragangliomas (PPGLs). ('pheochromocytoma and paragangliomas', 'Disease', 'MESH:D010673', (55, 90)) ('SDHB', 'Gene', (9, 13)) ('paraganglioma', 'Phenotype', 'HP:0002668', (76, 89)) ('paragangliomas', 'Phenotype', 'HP:0002668', (76, 90)) ('mutations', 'Var', (14, 23)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (55, 71)) 88763 31773431 Patients with SDHD mutations were found to have a younger age of penetrance and were more likely to develop multifocal disease. ('develop', 'PosReg', (100, 107)) ('mutations', 'Var', (19, 28)) ('SDHD', 'Gene', '6392', (14, 18)) ('multifocal disease', 'Disease', 'MESH:D000080364', (108, 126)) ('Patients', 'Species', '9606', (0, 8)) ('multifocal disease', 'Disease', (108, 126)) ('SDHD', 'Gene', (14, 18)) 88764 31773431 In addition, SDHB and SDHD mutant PPGLs often secrete norepinephrine and dopamine or secrete only dopamine. ('mutant', 'Var', (27, 33)) ('norepinephrine', 'Chemical', 'MESH:D009638', (54, 68)) ('dopamine', 'Chemical', 'MESH:D004298', (73, 81)) ('SDHD', 'Gene', '6392', (22, 26)) ('SDHD', 'Gene', (22, 26)) ('secrete', 'MPA', (85, 92)) ('SDHB', 'Gene', (13, 17)) ('PPGLs', 'Gene', (34, 39)) ('dopamine', 'Chemical', 'MESH:D004298', (98, 106)) 88765 31773431 Dopamine-only Currently there is no available data regarding surveillance in SDHA and SDHC mutation carriers. ('mutation', 'Var', (91, 99)) ('SDHA', 'Gene', '6389', (77, 81)) ('SDHC', 'Gene', (86, 90)) ('Dopamine', 'Chemical', 'MESH:D004298', (0, 8)) ('SDHC', 'Gene', '6391', (86, 90)) ('SDHA', 'Gene', (77, 81)) 88766 31773431 However, given the difference in malignancy phenotypes between SDHB and SDHD mutation carriers, the argument can be made that surveillance recommendations should take into account which SDH subunit is mutated. ('SDHB', 'Gene', (63, 67)) ('SDHD', 'Gene', (72, 76)) ('mutation', 'Var', (77, 85)) ('malignancy', 'Disease', 'MESH:D009369', (33, 43)) ('malignancy', 'Disease', (33, 43)) ('SDHD', 'Gene', '6392', (72, 76)) 88783 31399912 The majority of PPGLs are currently diagnosed during the work-up of an incidentaloma, then PPGL-related symptoms and lastly due to screening for a known hereditary syndrome (such as multiple endocrine neoplasia type 2, von Hippel Lindau syndrome, neurofibromatosis type 1, and mutations in succinate dehydrogenase B, C, and D). ('neurofibromatosis type 1', 'Gene', '4763', (247, 271)) ('neoplasia', 'Phenotype', 'HP:0002664', (201, 210)) ('von Hippel Lindau syndrome', 'Disease', (219, 245)) ('PPGL', 'Chemical', '-', (91, 95)) ('PPGLs', 'Disease', (16, 21)) ('hereditary syndrome', 'Disease', (153, 172)) ('von Hippel Lindau syndrome', 'Disease', 'MESH:D006623', (219, 245)) ('mutations', 'Var', (277, 286)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (182, 217)) ('hereditary syndrome', 'Disease', 'MESH:D009386', (153, 172)) ('incidentaloma', 'Disease', (71, 84)) ('succinate dehydrogenase B', 'Gene', (290, 315)) ('diagnosed', 'Reg', (36, 45)) ('PPGLs', 'Chemical', '-', (16, 21)) ('incidentaloma', 'Disease', 'MESH:C538238', (71, 84)) ('neurofibromatosis type 1', 'Gene', (247, 271)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (191, 210)) ('PPGL', 'Chemical', '-', (16, 20)) ('multiple endocrine neoplasia type 2', 'Disease', (182, 217)) ('PPGL-related', 'Gene', (91, 103)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (247, 264)) 88785 31399912 In about three quarters of the patients with PPGLs, there will be overproduction of both epinephrine and norepinephrine. ('overproduction', 'PosReg', (66, 80)) ('norepinephrine', 'Chemical', 'MESH:D009638', (105, 119)) ('epinephrine', 'Chemical', 'MESH:D004837', (89, 100)) ('epinephrine', 'MPA', (89, 100)) ('patients', 'Species', '9606', (31, 39)) ('PPGLs', 'Chemical', '-', (45, 50)) ('PPGLs', 'Var', (45, 50)) ('epinephrine', 'Chemical', 'MESH:D004837', (108, 119)) ('norepinephrine', 'MPA', (105, 119)) 88839 31399912 Cases of reversible symmetrical deep T-wave inversion after treatment with phenoxybenzamine, a non-selective, irreversible alpha receptor blocker, in patients with "cardiac arrhythmia and cardiomyopathy" associated with pheochromocytoma have been described. ('pheochromocytoma', 'Disease', 'MESH:D010673', (220, 236)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (75, 91)) ('men', 'Species', '9606', (65, 68)) ('cardiomyopathy', 'Disease', (188, 202)) ('T-wave inversion', 'Phenotype', 'HP:0010872', (37, 53)) ('cardiac arrhythmia', 'Phenotype', 'HP:0011675', (165, 183)) ('patients', 'Species', '9606', (150, 158)) ('phenoxybenzamine', 'Var', (75, 91)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (188, 202)) ('pheochromocytoma', 'Disease', (220, 236)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (188, 202)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (220, 236)) ('arrhythmia', 'Disease', 'MESH:D001145', (173, 183)) ('arrhythmia', 'Disease', (173, 183)) 88861 31399912 PPGL-induced hypercontracted sarcomere and CBN as that seen in TS has also been reported. ('CBN', 'CPA', (43, 46)) ('hypercontracted', 'PosReg', (13, 28)) ('TS', 'Phenotype', 'HP:0011665', (63, 65)) ('PPGL-induced', 'Var', (0, 12)) ('PPGL', 'Chemical', '-', (0, 4)) 88883 31399912 The complication rates in PPGL-induced TS are significantly higher than that in all-TS population reported by Templin et al., Sharkey et al., and Gianni et al.. ('complication', 'CPA', (4, 16)) ('higher', 'PosReg', (60, 66)) ('TS', 'Phenotype', 'HP:0011665', (39, 41)) ('TS', 'Phenotype', 'HP:0011665', (84, 86)) ('PPGL-induced', 'Var', (26, 38)) ('PPGL', 'Chemical', '-', (26, 30)) 88911 31399912 Phenoxybenzamine use generally gives rise to orthostatic hypotension, reflex tachycardia, nasal congestion, dizziness and syncope. ('nasal congestion', 'Disease', (90, 106)) ('tachycardia', 'Disease', 'MESH:D013610', (77, 88)) ('orthostatic hypotension', 'Phenotype', 'HP:0001278', (45, 68)) ('Phenoxybenzamine', 'Var', (0, 16)) ('dizziness', 'Disease', (108, 117)) ('gives rise to', 'Reg', (31, 44)) ('syncope', 'Disease', (122, 129)) ('dizziness', 'Phenotype', 'HP:0002321', (108, 117)) ('Phenoxybenzamine', 'Chemical', 'MESH:D010643', (0, 16)) ('orthostatic hypotension', 'Disease', 'MESH:D007024', (45, 68)) ('hypotension', 'Phenotype', 'HP:0002615', (57, 68)) ('dizziness', 'Disease', 'MESH:D004244', (108, 117)) ('syncope', 'Phenotype', 'HP:0001279', (122, 129)) ('tachycardia', 'Phenotype', 'HP:0001649', (77, 88)) ('nasal congestion', 'Phenotype', 'HP:0001742', (90, 106)) ('syncope', 'Disease', 'MESH:D013575', (122, 129)) ('orthostatic hypotension', 'Disease', (45, 68)) ('tachycardia', 'Disease', (77, 88)) 88974 31277296 alpha-adrenoceptor antagonists are categorized according to specific receptor activity: Non-selective antagonists such as phenoxybenzamine and phentolamine and selective alpha1-adrenoceptor antagonists such as doxazosin, prazosin, and terazosin. ('alpha1', 'Gene', '146', (170, 176)) ('terazosin', 'Chemical', 'MESH:C041226', (235, 244)) ('doxazosin', 'Chemical', 'MESH:D017292', (210, 219)) ('alpha1', 'Gene', (170, 176)) ('phenoxybenzamine', 'Var', (122, 138)) ('prazosin', 'Chemical', 'MESH:D011224', (221, 229)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (122, 138)) ('phentolamine', 'Chemical', 'MESH:D010646', (143, 155)) 89026 31277296 Moreover, profound irreversible alpha-adrenoceptor blockade by phenoxybenzamine triggers recalcitrant postoperative hypotension by: (1) Prolonged half-life of the drug and (2) permanent covalent binding to adrenoceptors which are curtailed only after de novo synthesis. ('alpha-adrenoceptor', 'Protein', (32, 50)) ('blockade', 'NegReg', (51, 59)) ('half-life', 'MPA', (146, 155)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (63, 79)) ('adrenoceptors', 'Protein', (206, 219)) ('Prolonged', 'PosReg', (136, 145)) ('recalcitrant', 'Disease', (89, 101)) ('postoperative hypotension', 'Disease', 'MESH:D007022', (102, 127)) ('phenoxybenzamine', 'Var', (63, 79)) ('covalent binding', 'Interaction', (186, 202)) ('hypotension', 'Phenotype', 'HP:0002615', (116, 127)) ('postoperative hypotension', 'Disease', (102, 127)) 89028 31277296 First line management for postoperative hypotension following PPGL resection includes vigorous intravenous fluid administration. ('postoperative hypotension', 'Disease', (26, 51)) ('PPGL', 'Gene', (62, 66)) ('hypotension', 'Phenotype', 'HP:0002615', (40, 51)) ('resection', 'Var', (67, 76)) ('postoperative hypotension', 'Disease', 'MESH:D007022', (26, 51)) 89062 31277296 Other tachyarrhythmias observed following PPGL resection may include atrial fibrillation, atrial flutter, and occasionally life-threatening ventricular fibrillation. ('arrhythmias', 'Phenotype', 'HP:0011675', (11, 22)) ('tachyarrhythmias', 'Disease', 'MESH:D013610', (6, 22)) ('ventricular fibrillation', 'Phenotype', 'HP:0001663', (140, 164)) ('ventricular fibrillation', 'Disease', 'MESH:D014693', (140, 164)) ('ventricular fibrillation', 'Disease', (140, 164)) ('atrial flutter', 'Disease', 'MESH:D001282', (90, 104)) ('tachyarrhythmias', 'Disease', (6, 22)) ('atrial flutter', 'Phenotype', 'HP:0004749', (90, 104)) ('resection', 'Var', (47, 56)) ('PPGL', 'Gene', (42, 46)) ('atrial fibrillation', 'Disease', 'MESH:D001281', (69, 88)) ('atrial fibrillation', 'Phenotype', 'HP:0005110', (69, 88)) ('atrial flutter', 'Disease', (90, 104)) ('atrial fibrillation', 'Disease', (69, 88)) 89123 31277296 The main mechanisms include: (1) Thrombotic or embolic occlusion of cerebral artery secondary to increased platelet aggregation, (2) cerebral hypoperfusion secondary to tissue hypoxia causing increased susceptibility in the watershed regions, and (3) rupture of intracranial artery causing intracerebral or subarachnoid hemorrhage secondary to catecholamine-induced hypertension. ('Thrombotic or embolic occlusion of cerebral artery', 'Disease', 'MESH:D002542', (33, 83)) ('increased platelet', 'Phenotype', 'HP:0001894', (97, 115)) ('subarachnoid hemorrhage', 'Disease', 'MESH:D013345', (307, 330)) ('subarachnoid hemorrhage', 'Phenotype', 'HP:0002138', (307, 330)) ('subarachnoid hemorrhage', 'Disease', (307, 330)) ('hypoxia', 'Disease', (176, 183)) ('occlusion of cerebral artery', 'Phenotype', 'HP:0012492', (55, 83)) ('rupture', 'Var', (251, 258)) ('platelet aggregation', 'Disease', 'MESH:D001791', (107, 127)) ('increased platelet aggregation', 'Phenotype', 'HP:0003540', (97, 127)) ('Thrombotic or embolic occlusion of cerebral artery', 'Disease', (33, 83)) ('water', 'Chemical', 'MESH:D014867', (224, 229)) ('hypoxia', 'Disease', 'MESH:D000860', (176, 183)) ('hypertension', 'Disease', 'MESH:D006973', (366, 378)) ('Thrombotic or embolic occlusion', 'Phenotype', 'HP:0001907', (33, 64)) ('increased', 'PosReg', (97, 106)) ('hypertension', 'Disease', (366, 378)) ('catecholamine', 'Chemical', 'MESH:D002395', (344, 357)) ('cerebral', 'Disease', (133, 141)) ('platelet aggregation', 'Disease', (107, 127)) ('hypertension', 'Phenotype', 'HP:0000822', (366, 378)) 89128 31277296 For patients that develop ischemic or hemorrhagic stroke following PPGL resection, it is advisable to provide a multidisciplinary patient-centered treatment plan including neurology, critical care, surgery, interventional neuroradiology, and anesthesiology. ('ischemic', 'Disease', (26, 34)) ('patient', 'Species', '9606', (130, 137)) ('resection', 'Var', (72, 81)) ('hemorrhagic stroke', 'Phenotype', 'HP:0001342', (38, 56)) ('PPGL', 'Gene', (67, 71)) ('patient', 'Species', '9606', (4, 11)) ('hemorrhagic stroke', 'Disease', (38, 56)) ('patients', 'Species', '9606', (4, 12)) ('ischemic', 'Disease', 'MESH:D007511', (26, 34)) ('stroke', 'Phenotype', 'HP:0001297', (50, 56)) ('hemorrhagic stroke', 'Disease', 'MESH:D020521', (38, 56)) 89153 31277296 Failure to correct the mass effect on the renal artery may lead to postoperative renal artery thrombosis, resulting in permanent kidney damage. ('artery thrombosis', 'Disease', (87, 104)) ('permanent kidney damage', 'Phenotype', 'HP:0012622', (119, 142)) ('kidney damage', 'Phenotype', 'HP:0000112', (129, 142)) ('Failure', 'Var', (0, 7)) ('artery thrombosis', 'Disease', 'MESH:D013927', (87, 104)) ('kidney damage', 'Disease', (129, 142)) ('renal artery', 'Disease', (81, 93)) ('renal artery', 'Disease', 'MESH:D007674', (42, 54)) ('renal artery', 'Disease', (42, 54)) ('lead to', 'Reg', (59, 66)) ('artery thrombosis', 'Phenotype', 'HP:0004420', (87, 104)) ('kidney damage', 'Disease', 'MESH:D007674', (129, 142)) ('renal artery', 'Disease', 'MESH:D007674', (81, 93)) 89167 31277296 Consequently, serum glucose levels should be monitored at regular intervals for at least 24 h postoperatively following a PPGL resection. ('PPGL', 'Var', (122, 126)) ('serum glucose levels', 'MPA', (14, 34)) ('glucose', 'Chemical', 'MESH:D005947', (20, 27)) 89184 31277296 alpha-adrenoceptor blockers such as phenoxybenzamine or doxazosin are initially considered as the pharmacological management among those with widespread metastatic disease, due to their additional beneficial effect on the smooth muscle cells of the intestine and blood vessels. ('phenoxybenzamine', 'Var', (36, 52)) ('doxazosin', 'Chemical', 'MESH:D017292', (56, 65)) ('alpha-adrenoceptor', 'Protein', (0, 18)) ('beneficial', 'PosReg', (197, 207)) ('widespread metastatic disease', 'Disease', (142, 171)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (36, 52)) 89185 31277296 Moreover, Metyrosine, a tyrosine analog competitively inhibiting tyrosine hydroxylase (enzyme catalyzing rate-limiting step of conversion of tyrosine to dihydroxyphenylalanine DOPA in catecholamine synthesis) causes significant catecholamine store depletion inside tumor cells. ('tyrosine', 'Chemical', 'MESH:D014443', (65, 73)) ('Metyrosine', 'Var', (10, 20)) ('tyrosine', 'Chemical', 'MESH:D014443', (24, 32)) ('tumor', 'Phenotype', 'HP:0002664', (265, 270)) ('tyrosine', 'Chemical', 'MESH:D014443', (141, 149)) ('tumor', 'Disease', (265, 270)) ('catecholamine', 'Chemical', 'MESH:D002395', (184, 197)) ('tyrosine', 'Chemical', 'MESH:D014443', (12, 20)) ('catecholamine', 'Chemical', 'MESH:D002395', (228, 241)) ('dihydroxyphenylalanine DOPA', 'Chemical', '-', (153, 180)) ('catecholamine store depletion', 'MPA', (228, 257)) ('Metyrosine', 'Chemical', 'MESH:D019805', (10, 20)) ('tumor', 'Disease', 'MESH:D009369', (265, 270)) ('tyrosine', 'Enzyme', (65, 73)) ('inhibiting', 'NegReg', (54, 64)) 89200 31277296 A catecholamine surge in the postoperative period from PPGL resection inhibits detrusor contraction via alpha-adrenoceptor mediated increase in bladder outlet and proximal urethral tone. ('alpha-adrenoceptor', 'MPA', (104, 122)) ('bladder outlet', 'Disease', (144, 158)) ('catecholamine surge', 'Phenotype', 'HP:0003334', (2, 21)) ('increase', 'PosReg', (132, 140)) ('detrusor contraction', 'MPA', (79, 99)) ('inhibits', 'NegReg', (70, 78)) ('bladder outlet', 'Disease', 'MESH:D001748', (144, 158)) ('PPGL', 'Gene', (55, 59)) ('catecholamine', 'Chemical', 'MESH:D002395', (2, 15)) ('resection', 'Var', (60, 69)) 89208 31277296 Patients with PPGL resection must be managed appropriately in the intensive care setting during the postoperative period. ('Patients', 'Species', '9606', (0, 8)) ('PPGL', 'Gene', (14, 18)) ('resection', 'Var', (19, 28)) 89217 30859632 High YME1L1 expression was significantly associated with a better prognosis in neuroblastoma. ('neuroblastoma', 'Phenotype', 'HP:0003006', (79, 92)) ('High', 'Var', (0, 4)) ('YME1L1', 'Gene', (5, 11)) ('expression', 'MPA', (12, 22)) ('neuroblastoma', 'Disease', 'MESH:D009447', (79, 92)) ('expression', 'Species', '29278', (12, 22)) ('neuroblastoma', 'Disease', (79, 92)) 89220 30859632 Dysfunction of the KIF1Bbeta/YME1L1/OPA1 mechanism may be involved in malignant biological features of neural crest-derived tumors as well as the initiation and progression of neurodegenerative diseases. ('Dysfunction', 'Var', (0, 11)) ('neurodegenerative diseases', 'Disease', (176, 202)) ('neurodegenerative diseases', 'Phenotype', 'HP:0002180', (176, 202)) ('neurodegenerative disease', 'Phenotype', 'HP:0002180', (176, 201)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('involved', 'Reg', (58, 66)) ('tumors', 'Disease', (124, 130)) ('tumors', 'Disease', 'MESH:D009369', (124, 130)) ('KIF1B', 'Gene', (19, 24)) ('tumors', 'Phenotype', 'HP:0002664', (124, 130)) ('neurodegenerative diseases', 'Disease', 'MESH:D019636', (176, 202)) ('KIF1B', 'Gene', '23095', (19, 24)) 89224 30859632 KIF1B is the kinesin superfamily motor protein, which has been shown to transport mitochondria.7 Recently, we and other investigators reported that KIF1Bbeta is a tumor suppressor mapping to chromosome 1p36.2 and is responsible for induction of apoptosis in neuroblastoma and pheochromocytoma.8, 9, 10 Loss of 1p36 is often seen in unfavorable neuroblastoma,11 and loss-of-function mutations in KIF1Bbeta have been identified in neuroblastoma, pheochromocytoma, and medulloblastoma,10 indicating that KIF1Bbeta is one of the pathogenic targets for these diseases. ('pheochromocytoma', 'Disease', (276, 292)) ('KIF1B', 'Gene', '23095', (395, 400)) ('neuroblastoma', 'Disease', (344, 357)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (276, 292)) ('mutations', 'Var', (382, 391)) ('pheochromocytoma', 'Disease', (444, 460)) ('KIF1B', 'Gene', '23095', (148, 153)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (444, 460)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (344, 357)) ('tumor', 'Disease', (163, 168)) ('neuroblastoma', 'Disease', (429, 442)) ('medulloblastoma', 'Disease', 'MESH:D008527', (466, 481)) ('neuroblastoma', 'Disease', 'MESH:D009447', (344, 357)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (429, 442)) ('KIF1B', 'Gene', (0, 5)) ('medulloblastoma', 'Disease', (466, 481)) ('KIF1B', 'Gene', (501, 506)) ('tumor', 'Disease', 'MESH:D009369', (163, 168)) ('neuroblastoma', 'Disease', 'MESH:D009447', (429, 442)) ('Loss', 'NegReg', (302, 306)) ('KIF1B', 'Gene', (395, 400)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('neuroblastoma and pheochromocytoma', 'Disease', 'MESH:D010673', (258, 292)) ('KIF1B', 'Gene', (148, 153)) ('loss-of-function', 'NegReg', (365, 381)) ('neuroblastoma', 'Disease', (258, 271)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (258, 271)) ('unfavorable', 'Disease', (332, 343)) ('KIF1B', 'Gene', '23095', (0, 5)) ('KIF1B', 'Gene', '23095', (501, 506)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (276, 292)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (444, 460)) ('neuroblastoma', 'Disease', 'MESH:D009447', (258, 271)) 89228 30859632 Construction of the plasmid encoding full-length human KIF1Bbeta has been described previously.10 The KIF1Bbeta-GFP deletion construct (KIF1BbetaDelta3-GFP) was produced by polymerase chain reaction (PCR)-based amplification. ('KIF1B', 'Gene', (102, 107)) ('KIF1B', 'Gene', (136, 141)) ('KIF1B', 'Gene', '23095', (102, 107)) ('human', 'Species', '9606', (49, 54)) ('KIF1B', 'Gene', (55, 60)) ('deletion', 'Var', (116, 124)) ('KIF1BbetaDelta3-GFP', 'Gene', '23095', (136, 155)) ('KIF1B', 'Gene', '23095', (55, 60)) ('KIF1BbetaDelta3-GFP', 'Gene', (136, 155)) ('KIF1B', 'Gene', '23095', (136, 141)) 89250 30859632 Meanwhile, we found that KIF1Bbeta-mediated fragmentation in mitochondria was accompanied by apoptosis. ('KIF1B', 'Gene', (25, 30)) ('apoptosis', 'CPA', (93, 102)) ('fragmentation', 'Var', (44, 57)) ('KIF1B', 'Gene', '23095', (25, 30)) 89259 30859632 The resistance of NB-1 cells was largely attenuated with the add-back of KIF1Bbeta (Figure 2C). ('attenuated', 'NegReg', (41, 51)) ('resistance', 'CPA', (4, 14)) ('KIF1B', 'Gene', (73, 78)) ('KIF1B', 'Gene', '23095', (73, 78)) ('add-back', 'Var', (61, 69)) 89260 30859632 On the other hand, in HeLa cells expressing KIF1Bbeta, siRNA-mediated knockdown of KIF1Bbeta apparently resulted in elongation of mitochondria, while knockdown of KIF1Balpha did not show a major change in mitochondrial morphology (Figures 2D and S3). ('elongation', 'CPA', (116, 126)) ('knockdown', 'Var', (70, 79)) ('KIF1B', 'Gene', (83, 88)) ('mitochondria', 'MPA', (130, 142)) ('KIF1B', 'Gene', '23095', (83, 88)) ('KIF1B', 'Gene', (163, 168)) ('HeLa', 'CellLine', 'CVCL:0030', (22, 26)) ('resulted in', 'Reg', (104, 115)) ('KIF1B', 'Gene', '23095', (163, 168)) ('KIF1B', 'Gene', (44, 49)) ('KIF1B', 'Gene', '23095', (44, 49)) 89261 30859632 Also, knockdown of KIF1Bbeta increased mitochondrial membrane potential DeltaPsim (Figure 2E), suggesting mitochondrial fusion.19 Correspondingly, knockdown of KIF1Bbeta inhibited apoptosis in response to doxorubicin treatment in HeLa cells (Figure 2F). ('response to doxorubicin treatment', 'MPA', (193, 226)) ('doxorubicin', 'Chemical', 'MESH:D004317', (205, 216)) ('KIF1B', 'Gene', (19, 24)) ('HeLa', 'CellLine', 'CVCL:0030', (230, 234)) ('KIF1B', 'Gene', (160, 165)) ('KIF1B', 'Gene', '23095', (19, 24)) ('apoptosis', 'CPA', (180, 189)) ('knockdown', 'Var', (147, 156)) ('KIF1B', 'Gene', '23095', (160, 165)) ('inhibited', 'NegReg', (170, 179)) 89273 30859632 In addition, GST-tagged KIF1Bbeta (full-length) could successfully affinity-precipitate YME1L1 (Figure 4A). ('KIF1B', 'Gene', '23095', (24, 29)) ('YME1L1', 'Var', (88, 94)) ('KIF1B', 'Gene', (24, 29)) 89280 30859632 High YME1L1 expression was statistically associated with a better prognosis (P = 0.046), while low YME1L1 expression was associated with a poor rate of survival (Figure 5A). ('expression', 'Species', '29278', (106, 116)) ('High', 'Var', (0, 4)) ('YME1L1', 'Gene', (5, 11)) ('expression', 'Species', '29278', (12, 22)) ('rat', 'Species', '10116', (144, 147)) 89282 30859632 Taken together, these results suggest that YME1L1 exhibits tumor suppressive activity, facilitating mitochondrial apoptosis. ('tumor', 'Disease', (59, 64)) ('YME1L1', 'Var', (43, 49)) ('mitochondrial apoptosis', 'CPA', (100, 123)) ('tumor', 'Disease', 'MESH:D009369', (59, 64)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) 89286 30859632 The ratio of fragmented cells to nonfragmented cells was the highest in cotransfected cells, suggesting that cotransfection of KIF1Bbeta and YME1L1 induced the most severe fragmentation in mitochondria, compared with single transfection (Figure 6A). ('KIF1B', 'Gene', (127, 132)) ('KIF1B', 'Gene', '23095', (127, 132)) ('cotransfection', 'Var', (109, 123)) ('YME1L1', 'Gene', (141, 147)) ('fragmentation', 'MPA', (172, 185)) ('rat', 'Species', '10116', (4, 7)) ('induced', 'Reg', (148, 155)) 89288 30859632 OPA1 is a dynamin-related GTPase responsible for the control of mitochondrial fusion.21, 22 Alternative splicing and proteolysis of OPA1 yield five bands, including long forms (L-OPA1; Figure 6C, upper two bands indicated by L) and short forms (S-OPA1; lower three bands indicated by S).23 It has been demonstrated that OPA1 must be present in both long and short forms for fusion to proceed with the balance of those forms being maintained by constitutive processing.24 In contrast, the cleavage of L-OPA1 triggers mitochondrial fission.25 As expected, the overexpression of YME1L1 decreased L-OPA1 (Figure 6C; left panel). ('decreased', 'NegReg', (583, 592)) ('expression', 'Species', '29278', (562, 572)) ('L-OPA1', 'MPA', (593, 599)) ('YME1L1', 'Var', (576, 582)) ('rat', 'Species', '10116', (309, 312)) 89289 30859632 Interestingly, KIF1Bbeta overexpression also decreased L-OPA1 (Figure 6C, right panel), whereas the overexpression of KIF1BbetaDelta3 failed (Figure 6D), indicating that the DIR of KIF1Bbeta is necessary for OPA1 cleavage by YME1L1. ('KIF1B', 'Gene', (181, 186)) ('KIF1B', 'Gene', (118, 123)) ('KIF1BbetaDelta3', 'Gene', '23095;10683', (118, 133)) ('KIF1B', 'Gene', '23095', (181, 186)) ('overexpression', 'Var', (25, 39)) ('decreased', 'NegReg', (45, 54)) ('expression', 'Species', '29278', (104, 114)) ('L-OPA1', 'MPA', (55, 61)) ('expression', 'Species', '29278', (29, 39)) ('KIF1B', 'Gene', '23095', (15, 20)) ('KIF1B', 'Gene', '23095', (118, 123)) ('KIF1B', 'Gene', (15, 20)) ('KIF1BbetaDelta3', 'Gene', (118, 133)) 89291 30859632 We also checked whether depletion of YME1L1 protects from KIF1Bbeta-induced cell death. ('KIF1B', 'Gene', (58, 63)) ('YME1L1', 'Gene', (37, 43)) ('KIF1B', 'Gene', '23095', (58, 63)) ('depletion', 'Var', (24, 33)) ('cell death', 'CPA', (76, 86)) 89295 30859632 This result shows that the depletion of YME1L1 protected cells from KIF1Bbeta-induced cell death. ('YME1L1', 'Gene', (40, 46)) ('KIF1B', 'Gene', '23095', (68, 73)) ('depletion', 'Var', (27, 36)) ('KIF1B', 'Gene', (68, 73)) 89298 30859632 Opposite to the YME1L1 expression, higher expression levels of OPA1 in patients with neuroblastoma were closely associated with a low survival rate (Figure S5), implying that dysfunction of KIF1Bbeta/YME1L1/OPA1 might contribute to the malignant behaviors of neuroblastoma. ('neuroblastoma', 'Disease', 'MESH:D009447', (259, 272)) ('expression levels', 'MPA', (42, 59)) ('expression', 'Species', '29278', (42, 52)) ('survival', 'MPA', (134, 142)) ('dysfunction', 'Var', (175, 186)) ('contribute', 'Reg', (218, 228)) ('neuroblastoma', 'Disease', (259, 272)) ('patients', 'Species', '9606', (71, 79)) ('neuroblastoma', 'Disease', 'MESH:D009447', (85, 98)) ('low', 'NegReg', (130, 133)) ('KIF1B', 'Gene', (190, 195)) ('rat', 'Species', '10116', (143, 146)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (259, 272)) ('neuroblastoma', 'Disease', (85, 98)) ('KIF1B', 'Gene', '23095', (190, 195)) ('expression', 'Species', '29278', (23, 33)) ('higher', 'PosReg', (35, 41)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (85, 98)) 89303 30859632 On the other hand, NGF depletion-induced apoptotic cell death was strikingly inhibited by knockdown mediated by two kinds of siRNA specifically against KIF1Bbeta or YME1L1 in PC12 cells (Figure 7D), supporting our notion that KIF1Bbeta/YME1L1-mediated mitochondrial fragmentation plays a critical role in NGF deprivation-induced apoptosis. ('KIF1B', 'Gene', '23095', (226, 231)) ('knockdown', 'Var', (90, 99)) ('inhibited', 'NegReg', (77, 86)) ('PC12', 'CellLine', 'CVCL:0481', (175, 179)) ('KIF1B', 'Gene', (152, 157)) ('apoptotic cell death', 'CPA', (41, 61)) ('KIF1B', 'Gene', '23095', (152, 157)) ('YME1L1', 'Gene', (165, 171)) ('KIF1B', 'Gene', (226, 231)) 89306 30859632 Dysfunction of the KIF1Bbeta/YME1L1/OPA1 mechanism may be involved not only in NGF-responsive nervous system diseases but also in mitochondrial morphological aberration-associated diseases. ('rat', 'Species', '10116', (162, 165)) ('Dysfunction', 'Var', (0, 11)) ('involved', 'Reg', (58, 66)) ('nervous system diseases', 'Disease', (94, 117)) ('KIF1B', 'Gene', (19, 24)) ('KIF1B', 'Gene', '23095', (19, 24)) ('nervous system diseases', 'Disease', 'MESH:D009422', (94, 117)) 89318 30859632 Furthermore, knockdown of KIF1Bbeta and YME1L1 largely attenuated NGF withdrawal-induced apoptosis (Figure 7D). ('NGF withdrawal-induced', 'Disease', (66, 88)) ('KIF1B', 'Gene', '23095', (26, 31)) ('YME1L1', 'Gene', (40, 46)) ('attenuated', 'NegReg', (55, 65)) ('knockdown', 'Var', (13, 22)) ('KIF1B', 'Gene', (26, 31)) 89323 30859632 In neuroblastoma, one of the neural crest-derived tumors, some tumors exhibit NGF dependence for survival and differentiation, and these tumors exhibit high expressions of NGF receptors TrkA and P75NTR.27 In these tumors, NGF deficiency induces spontaneous regression and is associated with a more favorable outcome. ('neuroblastoma', 'Phenotype', 'HP:0003006', (3, 16)) ('tumors', 'Disease', (137, 143)) ('tumors', 'Phenotype', 'HP:0002664', (63, 69)) ('tumor', 'Phenotype', 'HP:0002664', (214, 219)) ('neuroblastoma', 'Disease', 'MESH:D009447', (3, 16)) ('tumors', 'Disease', (214, 220)) ('P75NTR', 'Gene', (195, 201)) ('tumors', 'Disease', 'MESH:D009369', (50, 56)) ('TrkA', 'Gene', (186, 190)) ('expression', 'Species', '29278', (157, 167)) ('tumors', 'Disease', 'MESH:D009369', (137, 143)) ('NGF', 'Gene', (222, 225)) ('tumors', 'Disease', (63, 69)) ('tumors', 'Disease', 'MESH:D009369', (214, 220)) ('deficiency', 'Var', (226, 236)) ('tumors', 'Disease', 'MESH:D009369', (63, 69)) ('tumors', 'Phenotype', 'HP:0002664', (50, 56)) ('tumors', 'Phenotype', 'HP:0002664', (137, 143)) ('spontaneous regression', 'CPA', (245, 267)) ('TrkA', 'Gene', '4914', (186, 190)) ('P75NTR', 'Gene', '4804', (195, 201)) ('tumors', 'Phenotype', 'HP:0002664', (214, 220)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('neuroblastoma', 'Disease', (3, 16)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('tumors', 'Disease', (50, 56)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) 89325 30859632 Notably, loss of heterogeneity at the KIF1Bbeta locus is frequently observed in advanced neuroblastoma, which is accompanied by decreased KIF1Bbeta expression.10 We found that high YME1L1 expression was associated with a better overall survival in neuroblastoma (Figure 5A). ('neuroblastoma', 'Phenotype', 'HP:0003006', (89, 102)) ('expression', 'Species', '29278', (188, 198)) ('KIF1B', 'Gene', (138, 143)) ('KIF1B', 'Gene', (38, 43)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (248, 261)) ('KIF1B', 'Gene', '23095', (138, 143)) ('KIF1B', 'Gene', '23095', (38, 43)) ('overall survival', 'MPA', (228, 244)) ('neuroblastoma', 'Disease', 'MESH:D009447', (89, 102)) ('YME1L1', 'Gene', (181, 187)) ('expression', 'Species', '29278', (148, 158)) ('neuroblastoma', 'Disease', (89, 102)) ('better', 'PosReg', (221, 227)) ('neuroblastoma', 'Disease', 'MESH:D009447', (248, 261)) ('neuroblastoma', 'Disease', (248, 261)) ('high', 'Var', (176, 180)) 89327 30859632 These findings suggest that dysfunction of the KIF1Bbeta/YME1L1 complex may facilitate the escape of tumor cells from NGF deprivation-induced apoptosis, contributing to their malignant behavior and, consequently, unfavorable prognosis in neuroblastoma. ('KIF1B', 'Gene', '23095', (47, 52)) ('escape', 'CPA', (91, 97)) ('neuroblastoma', 'Disease', (238, 251)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('facilitate', 'PosReg', (76, 86)) ('tumor', 'Disease', (101, 106)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (238, 251)) ('dysfunction', 'Var', (28, 39)) ('malignant behavior', 'CPA', (175, 193)) ('contributing', 'Reg', (153, 165)) ('KIF1B', 'Gene', (47, 52)) ('tumor', 'Disease', 'MESH:D009369', (101, 106)) ('neuroblastoma', 'Disease', 'MESH:D009447', (238, 251)) 89330 30859632 Aberrant mitochondrial morphology is one of the major characteristics in neurodegenerative disease. ('neurodegenerative disease', 'Phenotype', 'HP:0002180', (73, 98)) ('Aberrant', 'Var', (0, 8)) ('neurodegenerative disease', 'Disease', 'MESH:D019636', (73, 98)) ('Aberrant mitochondrial morphology', 'Phenotype', 'HP:0008322', (0, 33)) ('neurodegenerative disease', 'Disease', (73, 98)) 89331 30859632 For instance, mitochondrial fission is frequently observed in Alzheimer's and Parkinson's diseases.30, 31 In Alzheimer's disease, amyloid-beta localizes in mitochondria and causes fragmentation.32 Recent genetic studies in flies suggested that Pink1 and Parkin act to promote mitochondrial fragmentation in hereditary Parkinson's disease.30, 33, 34 Indeed, defects in mitochondrial proteins have been identified as the cause of neurodegenerative diseases. ('Parkin', 'Gene', '40336', (318, 324)) ('neurodegenerative diseases', 'Phenotype', 'HP:0002180', (428, 454)) ('Parkin', 'Gene', '40336', (254, 260)) ("Alzheimer's disease", 'Phenotype', 'HP:0002511', (109, 128)) ('mitochondrial proteins', 'Protein', (368, 390)) ('neurodegenerative diseases', 'Disease', 'MESH:D019636', (428, 454)) ("Alzheimer's disease", 'Disease', (109, 128)) ('Pink1', 'Gene', (244, 249)) ('Parkin', 'Gene', (318, 324)) ('cause', 'Reg', (419, 424)) ('defects', 'Var', (357, 364)) ("Alzheimer's disease", 'Disease', 'MESH:D000544', (109, 128)) ('Parkin', 'Gene', (254, 260)) ('Pink1', 'Gene', '65018', (244, 249)) ('neurodegenerative disease', 'Phenotype', 'HP:0002180', (428, 453)) ('neurodegenerative diseases', 'Disease', (428, 454)) ('Parkin', 'Gene', '40336', (78, 84)) ("hereditary Parkinson's disease", 'Disease', (307, 337)) ("Alzheimer's and Parkinson's diseases", 'Disease', 'MESH:D010300', (62, 98)) ('Parkin', 'Gene', (78, 84)) ("hereditary Parkinson's disease", 'Disease', 'MESH:D010300', (307, 337)) 89332 30859632 Defective OPA1 induces optic atrophy.32, 35 KIF1Bbeta, as well as Mfn2, is the genetic cause of CMT2A.13, 16 On the basis of our findings in this study, we propose that the dysfunction of KIF1Bbeta/YME1L1/OPA1 may be involved in the occurrence and progression of neurodegenerative disorders. ('KIF1B', 'Gene', (188, 193)) ('CMT2A', 'Gene', (96, 101)) ('Mfn2', 'Gene', (66, 70)) ('optic atrophy', 'Disease', (23, 36)) ('CMT2A', 'Gene', '23095', (96, 101)) ('Mfn2', 'Gene', '9927', (66, 70)) ('KIF1B', 'Gene', '23095', (188, 193)) ('optic atrophy', 'Disease', 'MESH:D009896', (23, 36)) ('neurodegenerative disorders', 'Phenotype', 'HP:0002180', (263, 290)) ('involved', 'Reg', (217, 225)) ('neurodegenerative disorders', 'Disease', 'MESH:D019636', (263, 290)) ('neurodegenerative disorders', 'Disease', (263, 290)) ('dysfunction', 'Var', (173, 184)) ('KIF1B', 'Gene', (44, 49)) ('KIF1B', 'Gene', '23095', (44, 49)) 89336 30971719 SDH inactivation is associated with tumorigenesis in certain types of tumor. ('associated', 'Reg', (20, 30)) ('inactivation', 'Var', (4, 16)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) ('SDH', 'Gene', (0, 3)) ('tumor', 'Disease', (70, 75)) ('tumor', 'Disease', 'MESH:D009369', (36, 41)) ('tumor', 'Phenotype', 'HP:0002664', (36, 41)) ('tumor', 'Disease', (36, 41)) ('SDH', 'Gene', '6390', (0, 3)) 89338 30971719 Immunohistochemistry for SDHB is a reliable method for detecting the inactivation of SDH by mutations in SDHA, SDHB, SDHC, SDHD and SDH complex assembly factor 2 (SDHAF2) genes with high sensitivity and specificity. ('SDH', 'Gene', (123, 126)) ('SDHA', 'Gene', '6389', (163, 167)) ('SDH complex assembly factor 2', 'Gene', (132, 161)) ('SDHA', 'Gene', '6389', (105, 109)) ('SDHC', 'Gene', (117, 121)) ('SDH', 'Gene', (105, 108)) ('SDHB', 'Gene', (111, 115)) ('SDH', 'Gene', (25, 28)) ('SDH', 'Gene', '6390', (111, 114)) ('SDH', 'Gene', '6390', (85, 88)) ('SDH', 'Gene', '6390', (117, 120)) ('SDH complex assembly factor 2', 'Gene', '54949', (132, 161)) ('SDH', 'Gene', '6390', (163, 166)) ('SDHD', 'Gene', '6392', (123, 127)) ('SDH', 'Gene', '6390', (132, 135)) ('mutations', 'Var', (92, 101)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDHC', 'Gene', '6391', (117, 121)) ('SDH', 'Gene', '6390', (123, 126)) ('SDH', 'Gene', (111, 114)) ('SDH', 'Gene', (85, 88)) ('inactivation', 'NegReg', (69, 81)) ('SDHAF2', 'Gene', (163, 169)) ('SDHD', 'Gene', (123, 127)) ('SDHAF2', 'Gene', '54949', (163, 169)) ('SDH', 'Gene', '6390', (105, 108)) ('SDH', 'Gene', (163, 166)) ('SDH', 'Gene', (117, 120)) ('SDHA', 'Gene', (163, 167)) ('SDHA', 'Gene', (105, 109)) ('SDH', 'Gene', (132, 135)) ('SDHB', 'Gene', (25, 29)) ('SDH', 'Gene', '6390', (25, 28)) ('SDHB', 'Gene', '6390', (111, 115)) 89344 30971719 Our results suggest that SDH inactivation may represent an alternative pathway in the tumorigenesis of hemangioblastoma. ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('hemangioblastoma', 'Disease', (103, 119)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (103, 119)) ('tumor', 'Disease', (86, 91)) ('SDH', 'Gene', (25, 28)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (103, 119)) ('tumor', 'Disease', 'MESH:D009369', (86, 91)) ('inactivation', 'Var', (29, 41)) ('SDH', 'Gene', '6390', (25, 28)) 89350 30971719 SDH inactivation results in the accumulation of succinate and induces the stabilization of hypoxia-inducible factor (HIF) via competitive inhibition of HIF prolyl-hydroxylases. ('stabilization', 'MPA', (74, 87)) ('succinate', 'Chemical', 'MESH:D019802', (48, 57)) ('inactivation', 'Var', (4, 16)) ('hypoxia', 'Disease', (91, 98)) ('SDH', 'Gene', (0, 3)) ('induces', 'Reg', (62, 69)) ('succinate', 'MPA', (48, 57)) ('SDH', 'Gene', '6390', (0, 3)) ('accumulation', 'PosReg', (32, 44)) ('hypoxia', 'Disease', 'MESH:D000860', (91, 98)) 89352 30971719 The inactivation of SDH can be caused by any mutation of SDHA, SDHB, SDHC, SDHD, or SDHAF2 (SDHx genes). ('SDH', 'Gene', (92, 95)) ('SDH', 'Gene', (20, 23)) ('SDHC', 'Gene', (69, 73)) ('SDHD', 'Gene', (75, 79)) ('SDH', 'Gene', '6390', (57, 60)) ('SDHA', 'Gene', (57, 61)) ('SDHB', 'Gene', (63, 67)) ('SDH', 'Gene', '6390', (63, 66)) ('SDHx', 'Chemical', '-', (92, 96)) ('SDHA', 'Gene', '6389', (57, 61)) ('SDH', 'Gene', '6390', (69, 72)) ('SDH', 'Gene', (57, 60)) ('SDH', 'Gene', (63, 66)) ('SDHAF2', 'Gene', (84, 90)) ('SDH', 'Gene', '6390', (75, 78)) ('SDH', 'Gene', '6390', (84, 87)) ('SDHAF2', 'Gene', '54949', (84, 90)) ('SDHC', 'Gene', '6391', (69, 73)) ('SDH', 'Gene', '6390', (92, 95)) ('SDHA', 'Gene', (84, 88)) ('caused by', 'Reg', (31, 40)) ('SDH', 'Gene', '6390', (20, 23)) ('SDHA', 'Gene', '6389', (84, 88)) ('SDHD', 'Gene', '6392', (75, 79)) ('SDH', 'Gene', (69, 72)) ('mutation', 'Var', (45, 53)) ('SDHB', 'Gene', '6390', (63, 67)) ('inactivation', 'MPA', (4, 16)) ('SDH', 'Gene', (75, 78)) ('SDH', 'Gene', (84, 87)) 89353 30971719 Germline mutations in SDHx genes were first believed to be limited to familial paraganglioma/pheochromocytoma. ('Germline mutations', 'Var', (0, 18)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('SDHx', 'Gene', (22, 26)) ('SDHx', 'Chemical', '-', (22, 26)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('familial paraganglioma/pheochromocytoma', 'Disease', 'MESH:C531777', (70, 109)) ('familial paraganglioma/pheochromocytoma', 'Disease', (70, 109)) 89355 30971719 Immunohistochemistry for SDHB is a reliable method for detecting SDHx mutations with high sensitivity and specificity. ('mutations', 'Var', (70, 79)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDHx', 'Chemical', '-', (65, 69)) ('SDHB', 'Gene', (25, 29)) ('SDHx', 'Gene', (65, 69)) 89356 30971719 Various types of tumors have been evaluated to determine the status of SDHx mutations using SDHB immunohistochemistry. ('tumors', 'Phenotype', 'HP:0002664', (17, 23)) ('mutations', 'Var', (76, 85)) ('SDHB', 'Gene', '6390', (92, 96)) ('SDHx', 'Chemical', '-', (71, 75)) ('tumors', 'Disease', (17, 23)) ('SDHx', 'Gene', (71, 75)) ('tumors', 'Disease', 'MESH:D009369', (17, 23)) ('SDHB', 'Gene', (92, 96)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) 89357 30971719 However, data on SDHx mutations of central nervous system (CNS) tumors are very limited. ('tumors', 'Phenotype', 'HP:0002664', (64, 70)) ('SDHx', 'Chemical', '-', (17, 21)) ('SDHx', 'Gene', (17, 21)) ('central nervous system (CNS) tumors', 'Disease', 'MESH:D016543', (35, 70)) ('mutations', 'Var', (22, 31)) ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) 89374 30971719 We did not detect any pathogenic SDHB mutations except for three cases of a mutated exon 4 and one case of a mutated exon 1, which failed to amplify. ('mutations', 'Var', (38, 47)) ('mutated', 'Var', (76, 83)) ('SDHB', 'Gene', '6390', (33, 37)) ('SDHB', 'Gene', (33, 37)) 89375 30971719 Interestingly, we found an SDHB c.18C > A single nucleotide variant in all nine cases of hemangioblastoma, which was present in exon 1. ('hemangioblastoma', 'Phenotype', 'HP:0010797', (89, 105)) ('c.18C > A single nucleotide', 'Var', (32, 59)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (89, 105)) ('c.18C > A', 'Mutation', 'rs2746462', (32, 41)) ('SDHB', 'Gene', '6390', (27, 31)) ('hemangioblastoma', 'Disease', (89, 105)) ('SDHB', 'Gene', (27, 31)) 89380 30971719 Remarkably, SDHB immunohistochemistry shows negative immunoexpression in the presence of bi-allelic inactivation of any of SDHx mutation and has been suggested to be a surrogate marker for SDHx mutation. ('SDHx', 'Gene', (123, 127)) ('negative', 'NegReg', (44, 52)) ('SDHB', 'Gene', '6390', (12, 16)) ('SDHB', 'Gene', (12, 16)) ('SDHx', 'Chemical', '-', (123, 127)) ('immunoexpression', 'MPA', (53, 69)) ('SDHx', 'Chemical', '-', (189, 193)) ('mutation', 'Var', (128, 136)) ('bi-allelic inactivation', 'Var', (89, 112)) 89381 30971719 Because of its wide expression and fundamental role in cell biology, its inactivation may be associated with other neoplasms beyond paraganglioma/pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (146, 162)) ('neoplasms', 'Disease', 'MESH:D009369', (115, 124)) ('inactivation', 'Var', (73, 85)) ('associated', 'Reg', (93, 103)) ('neoplasms', 'Disease', (115, 124)) ('paraganglioma', 'Phenotype', 'HP:0002668', (132, 145)) ('paraganglioma/pheochromocytoma', 'Disease', (132, 162)) ('paraganglioma/pheochromocytoma', 'Disease', 'MESH:D010673', (132, 162)) 89382 30971719 Various types of tumors were reported in SDHx mutation carriers or have been identified in a series of tumors that have not been genetically characterized. ('tumors', 'Phenotype', 'HP:0002664', (17, 23)) ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('tumors', 'Phenotype', 'HP:0002664', (103, 109)) ('tumors', 'Disease', (17, 23)) ('tumors', 'Disease', 'MESH:D009369', (17, 23)) ('tumors', 'Disease', (103, 109)) ('SDHx', 'Chemical', '-', (41, 45)) ('tumors', 'Disease', 'MESH:D009369', (103, 109)) ('SDHx', 'Gene', (41, 45)) ('reported', 'Reg', (29, 37)) ('mutation', 'Var', (46, 54)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) 89383 30971719 SDHB immunonegativity has been reported in pheochromocytoma/paraganglioma, GISTs, RCCs, PAs, pancreatic NETs, prostate cancer, stomach cancer, and testicular seminoma. ('GISTs', 'Disease', (75, 80)) ('pancreatic NETs', 'Disease', (93, 108)) ('PAs', 'Disease', (88, 91)) ('testicular seminoma', 'Phenotype', 'HP:0100617', (147, 166)) ('PAs', 'Phenotype', 'HP:0002893', (88, 91)) ('stomach cancer', 'Disease', 'MESH:D013274', (127, 141)) ('SDHB', 'Gene', (0, 4)) ('stomach cancer', 'Phenotype', 'HP:0012126', (127, 141)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (43, 73)) ('immunonegativity', 'Var', (5, 21)) ('cancer', 'Phenotype', 'HP:0002664', (135, 141)) ('RCC', 'Disease', (82, 85)) ('pancreatic NETs', 'Disease', 'MESH:D010195', (93, 108)) ('paraganglioma', 'Phenotype', 'HP:0002668', (60, 73)) ('testicular seminoma', 'Disease', 'MESH:D018239', (147, 166)) ('cancer', 'Phenotype', 'HP:0002664', (119, 125)) ('reported', 'Reg', (31, 39)) ('prostate cancer', 'Disease', 'MESH:D011471', (110, 125)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (43, 59)) ('RCC', 'Disease', 'MESH:C538614', (82, 85)) ('prostate cancer', 'Phenotype', 'HP:0012125', (110, 125)) ('NETs', 'Phenotype', 'HP:0100634', (104, 108)) ('prostate cancer', 'Disease', (110, 125)) ('GISTs', 'Phenotype', 'HP:0100723', (75, 80)) ('stomach cancer', 'Disease', (127, 141)) ('SDHB', 'Gene', '6390', (0, 4)) ('RCCs', 'Phenotype', 'HP:0005584', (82, 86)) ('pheochromocytoma/paraganglioma', 'Disease', (43, 73)) ('testicular seminoma', 'Disease', (147, 166)) 89385 30971719 A retrospective cohort study on SDHx mutation carriers reported a case of meningioma in a patient with SDHA germline mutation and a case of oligodendroglioma in a patient with SDHD germline mutation. ('SDHD', 'Gene', (176, 180)) ('SDHD', 'Gene', '6392', (176, 180)) ('SDHx', 'Chemical', '-', (32, 36)) ('oligodendroglioma', 'Disease', 'MESH:D009837', (140, 157)) ('meningioma', 'Disease', (74, 84)) ('mutation', 'Var', (37, 45)) ('SDHA', 'Gene', (103, 107)) ('meningioma', 'Phenotype', 'HP:0002858', (74, 84)) ('patient', 'Species', '9606', (90, 97)) ('patient', 'Species', '9606', (163, 170)) ('meningioma', 'Disease', 'MESH:D008577', (74, 84)) ('oligodendroglioma', 'Disease', (140, 157)) ('SDHA', 'Gene', '6389', (103, 107)) ('SDHx', 'Gene', (32, 36)) 89387 30971719 A case of atypical meningioma was reported in a patient with a germline mutation in the SDHB gene and molecular analyses with tumor tissue confirmed an SDHB mutation in the meningioma. ('meningioma', 'Phenotype', 'HP:0002858', (173, 183)) ('SDHB', 'Gene', (152, 156)) ('meningioma', 'Disease', (19, 29)) ('SDHB', 'Gene', '6390', (88, 92)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('SDHB', 'Gene', (88, 92)) ('mutation', 'Var', (157, 165)) ('meningioma', 'Disease', 'MESH:D008577', (173, 183)) ('meningioma', 'Phenotype', 'HP:0002858', (19, 29)) ('tumor', 'Disease', 'MESH:D009369', (126, 131)) ('patient', 'Species', '9606', (48, 55)) ('mutation', 'Var', (72, 80)) ('meningioma', 'Disease', 'MESH:D008577', (19, 29)) ('SDHB', 'Gene', '6390', (152, 156)) ('meningioma', 'Disease', (173, 183)) ('tumor', 'Disease', (126, 131)) 89389 30971719 A recent study suggested that oligodendrogliomas with a 1p19q deletion are associated with the downregulation of SDHB expression, but SDHB immunohistochemistry was not performed. ('oligodendrogliomas', 'Disease', 'MESH:D009837', (30, 48)) ('SDHB', 'Gene', '6390', (113, 117)) ('1p19q deletion', 'Var', (56, 70)) ('downregulation', 'NegReg', (95, 109)) ('SDHB', 'Gene', (113, 117)) ('oligodendrogliomas', 'Disease', (30, 48)) ('SDHB', 'Gene', '6390', (134, 138)) ('SDHB', 'Gene', (134, 138)) ('expression', 'MPA', (118, 128)) 89391 30971719 Previous studies have reported that PA may harbor mutations in SDHx genes and exhibit SDHB immunonegativity. ('SDHB', 'Gene', (86, 90)) ('mutations', 'Var', (50, 59)) ('SDHx genes', 'Gene', (63, 73)) ('SDHx', 'Chemical', '-', (63, 67)) ('SDHB', 'Gene', '6390', (86, 90)) 89392 30971719 However, SDH inactivation in PA is very rare (only 0.3%). ('SDH', 'Gene', '6390', (9, 12)) ('inactivation', 'Var', (13, 25)) ('SDH', 'Gene', (9, 12)) 89394 30971719 Unexpectedly, we found SDHB immunonegativity in hemangioblastoma. ('immunonegativity', 'Var', (28, 44)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (48, 64)) ('hemangioblastoma', 'Disease', (48, 64)) ('SDHB', 'Gene', '6390', (23, 27)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (48, 64)) ('SDHB', 'Gene', (23, 27)) 89398 30971719 In VHL-related hemangioblastomas, bi-allelic inactivation of the VHL gene can induce HIF stabilization. ('induce', 'Reg', (78, 84)) ('VHL', 'Gene', '7428', (65, 68)) ('hemangioblastomas', 'Disease', 'MESH:D018325', (15, 32)) ('hemangioblastomas', 'Disease', (15, 32)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (15, 31)) ('VHL', 'Gene', (3, 6)) ('VHL', 'Gene', '7428', (3, 6)) ('VHL', 'Gene', (65, 68)) ('bi-allelic inactivation', 'Var', (34, 57)) ('HIF stabilization', 'CPA', (85, 102)) 89400 30971719 Recent studies have suggested that the inactivation of VHL plays a dominant role not only in the pathogenesis of familial hemangioblastomas but also in the sporadic form. ('familial hemangioblastomas', 'Disease', (113, 139)) ('familial hemangioblastomas', 'Disease', 'MESH:D018325', (113, 139)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (122, 138)) ('VHL', 'Gene', (55, 58)) ('inactivation', 'Var', (39, 51)) ('VHL', 'Gene', '7428', (55, 58)) 89401 30971719 However, a significant proportion of sporadic hemangioblastomas still exist without VHL inactivation, which suggests that alternative pathways may be involved in the tumorigenesis of sporadic hemangioblastomas. ('tumor', 'Disease', 'MESH:D009369', (166, 171)) ('VHL', 'Gene', (84, 87)) ('involved', 'Reg', (150, 158)) ('tumor', 'Phenotype', 'HP:0002664', (166, 171)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (46, 62)) ('VHL', 'Gene', '7428', (84, 87)) ('tumor', 'Disease', (166, 171)) ('sporadic hemangioblastomas', 'Disease', 'MESH:D018325', (183, 209)) ('sporadic hemangioblastomas', 'Disease', 'MESH:D018325', (37, 63)) ('sporadic hemangioblastomas', 'Disease', (183, 209)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (192, 208)) ('sporadic hemangioblastomas', 'Disease', (37, 63)) ('inactivation', 'Var', (88, 100)) 89403 30971719 Clinical manifestations of the SDHx mutation are very similar to those of VHL disease. ('VHL disease', 'Disease', 'MESH:D006623', (74, 85)) ('SDHx', 'Chemical', '-', (31, 35)) ('VHL disease', 'Disease', (74, 85)) ('SDHx', 'Gene', (31, 35)) ('mutation', 'Var', (36, 44)) 89405 30971719 Furthermore, the inactivation of SDH and VHL can share a common pathway via HIF stabilization. ('inactivation', 'Var', (17, 29)) ('SDH', 'Gene', (33, 36)) ('HIF stabilization', 'CPA', (76, 93)) ('SDH', 'Gene', '6390', (33, 36)) ('VHL', 'Gene', (41, 44)) ('VHL', 'Gene', '7428', (41, 44)) 89406 30971719 Therefore, our results suggest that SDH inactivation may represent one alternative pathway involved in the tumorigenesis of sporadic hemangioblastoma. ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumor', 'Disease', (107, 112)) ('sporadic hemangioblastoma', 'Disease', (124, 149)) ('SDH', 'Gene', '6390', (36, 39)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (133, 149)) ('sporadic hemangioblastoma', 'Disease', 'MESH:D018325', (124, 149)) ('SDH', 'Gene', (36, 39)) ('inactivation', 'Var', (40, 52)) 89407 30971719 SDH inactivation-related tumors can be caused irrespective of the type of SDHx mutation. ('SDH', 'Gene', (74, 77)) ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('tumors', 'Disease', (25, 31)) ('SDH', 'Gene', (0, 3)) ('SDHx', 'Chemical', '-', (74, 78)) ('tumors', 'Phenotype', 'HP:0002664', (25, 31)) ('tumors', 'Disease', 'MESH:D009369', (25, 31)) ('mutation', 'Var', (79, 87)) ('SDH', 'Gene', '6390', (74, 77)) ('inactivation-related', 'Var', (4, 24)) ('SDH', 'Gene', '6390', (0, 3)) 89409 30971719 SDHB and SDHD mutations are common in pheochromocytoma/paraganglioma, and SDHA mutations and SDHC promoter hypermethylation are relatively common in GISTs. ('pheochromocytoma/paraganglioma', 'Disease', (38, 68)) ('common', 'Reg', (28, 34)) ('SDHD', 'Gene', (9, 13)) ('SDHD', 'Gene', '6392', (9, 13)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (38, 68)) ('SDHA', 'Gene', '6389', (74, 78)) ('SDHC', 'Gene', (93, 97)) ('SDHB', 'Gene', '6390', (0, 4)) ('GISTs', 'Phenotype', 'HP:0100723', (149, 154)) ('paraganglioma', 'Phenotype', 'HP:0002668', (55, 68)) ('SDHA', 'Gene', (74, 78)) ('SDHC', 'Gene', '6391', (93, 97)) ('mutations', 'Var', (14, 23)) ('SDHB', 'Gene', (0, 4)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (38, 54)) 89410 30971719 In RCC, SDHB mutations are more common. ('SDHB', 'Gene', '6390', (8, 12)) ('SDHB', 'Gene', (8, 12)) ('common', 'Reg', (32, 38)) ('RCC', 'Disease', (3, 6)) ('mutations', 'Var', (13, 22)) ('RCC', 'Disease', 'MESH:C538614', (3, 6)) 89411 30971719 PA is frequently associated with SDHA mutations. ('associated', 'Reg', (17, 27)) ('mutations', 'Var', (38, 47)) ('SDHA', 'Gene', '6389', (33, 37)) ('SDHA', 'Gene', (33, 37)) 89412 30971719 Although several recent studies have performed comprehensive molecular analyses on a series of hemangioblastomas, data related to SDHx mutations in hemangioblastoma are rare. ('hemangioblastoma', 'Disease', (148, 164)) ('SDHx', 'Chemical', '-', (130, 134)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (148, 164)) ('SDHx', 'Gene', (130, 134)) ('mutations', 'Var', (135, 144)) ('hemangioblastoma', 'Disease', (95, 111)) ('hemangioblastomas', 'Disease', 'MESH:D018325', (95, 112)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (148, 164)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (95, 111)) ('hemangioblastomas', 'Disease', (95, 112)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (95, 111)) 89414 30971719 They reported inactivation of the VHL gene in 78% of sporadic hemangioblastomas, but no other gene was significantly mutated. ('hemangioblastoma', 'Phenotype', 'HP:0010797', (62, 78)) ('inactivation', 'Var', (14, 26)) ('sporadic hemangioblastomas', 'Disease', 'MESH:D018325', (53, 79)) ('VHL', 'Gene', (34, 37)) ('VHL', 'Gene', '7428', (34, 37)) ('sporadic hemangioblastomas', 'Disease', (53, 79)) 89415 30971719 In the supplementary data of that study, we found seven cases of hemangioblastoma with missense mutations in SDHA and SDHB genes. ('SDHB', 'Gene', '6390', (118, 122)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (65, 81)) ('SDHA', 'Gene', '6389', (109, 113)) ('SDHB', 'Gene', (118, 122)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (65, 81)) ('missense mutations', 'Var', (87, 105)) ('SDHA', 'Gene', (109, 113)) ('hemangioblastoma', 'Disease', (65, 81)) 89416 30971719 However, missense mutations in the SDHA gene were benign or uncertain significance and only one mutation in the SDHB gene was associated with conflicting interpretations of pathogenicity. ('SDHA', 'Gene', '6389', (35, 39)) ('SDHB', 'Gene', '6390', (112, 116)) ('SDHA', 'Gene', (35, 39)) ('SDHB', 'Gene', (112, 116)) ('missense mutations', 'Var', (9, 27)) 89419 30971719 Only one type of SDHB polymorphism was found (c.18C > A single nucleotide). ('c.18C > A', 'Mutation', 'rs2746462', (46, 55)) ('SDHB', 'Gene', '6390', (17, 21)) ('c.18C >', 'Var', (46, 53)) ('SDHB', 'Gene', (17, 21)) 89422 30971719 Therefore, to elucidate how the inactivation of SDHB is related to mutations in SDHx genes, further comprehensive genomic studies, including epigenomic analyses of SDHx genes, is needed. ('SDHx', 'Chemical', '-', (80, 84)) ('SDHB', 'Gene', '6390', (48, 52)) ('mutations', 'Var', (67, 76)) ('SDHx', 'Chemical', '-', (164, 168)) ('inactivation', 'NegReg', (32, 44)) ('SDHB', 'Gene', (48, 52)) ('SDHx genes', 'Gene', (80, 90)) ('related', 'Reg', (56, 63)) 89428 30971719 This pattern has been reported 3.7-11.5% of paragangliomas/pheochromocytomas and was frequently identified in cases with SDHD and SDHB mutations. ('SDHD', 'Gene', (121, 125)) ('paraganglioma', 'Phenotype', 'HP:0002668', (44, 57)) ('paragangliomas', 'Phenotype', 'HP:0002668', (44, 58)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (44, 76)) ('paragangliomas/pheochromocytomas', 'Disease', (44, 76)) ('SDHB', 'Gene', '6390', (130, 134)) ('mutations', 'Var', (135, 144)) ('SDHB', 'Gene', (130, 134)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (59, 76)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (59, 75)) ('SDHD', 'Gene', '6392', (121, 125)) 89436 30971719 Overall, 5~15% of tumors without SDHx gene mutations are interpreted as being SDHB immunonegative. ('SDHx', 'Chemical', '-', (33, 37)) ('SDHB', 'Gene', '6390', (78, 82)) ('SDHB', 'Gene', (78, 82)) ('tumors', 'Disease', (18, 24)) ('mutations', 'Var', (43, 52)) ('tumors', 'Disease', 'MESH:D009369', (18, 24)) ('tumors', 'Phenotype', 'HP:0002664', (18, 24)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) ('SDHx', 'Gene', (33, 37)) 89437 30971719 However, SDHB immunonegativity in tumors without SDHx gene mutations may be associated with limitations in the molecular methods or epigenetic changes. ('SDHB', 'Gene', '6390', (9, 13)) ('immunonegativity', 'Var', (14, 30)) ('tumors', 'Disease', (34, 40)) ('tumors', 'Disease', 'MESH:D009369', (34, 40)) ('tumors', 'Phenotype', 'HP:0002664', (34, 40)) ('SDHB', 'Gene', (9, 13)) ('SDHx', 'Chemical', '-', (49, 53)) ('SDHx', 'Gene', (49, 53)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) 89438 30971719 Therefore, to elucidate the mechanism involved in the loss of SDHB immunoexpression in hemangioblastoma, further comprehensive molecular genetic analyses of SDHx mutations, including promoter methylation and/or VHL testing, should be performed. ('mutations', 'Var', (162, 171)) ('VHL', 'Gene', (211, 214)) ('hemangioblastoma', 'Disease', (87, 103)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (87, 103)) ('VHL', 'Gene', '7428', (211, 214)) ('SDHx', 'Chemical', '-', (157, 161)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (87, 103)) ('SDHx', 'Gene', (157, 161)) ('SDHB', 'Gene', '6390', (62, 66)) ('SDHB', 'Gene', (62, 66)) 89440 30971719 Among the CNS tumors, we found that hemangioblastoma was associated with SDHB immunonegativity, which suggests the inactivation of SDH. ('associated', 'Reg', (57, 67)) ('CNS tumors', 'Disease', (10, 20)) ('SDH', 'Gene', '6390', (73, 76)) ('hemangioblastoma', 'Disease', (36, 52)) ('SDH', 'Gene', '6390', (131, 134)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (36, 52)) ('tumors', 'Phenotype', 'HP:0002664', (14, 20)) ('immunonegativity', 'Var', (78, 94)) ('SDH', 'Gene', (73, 76)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (36, 52)) ('SDHB', 'Gene', '6390', (73, 77)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) ('SDH', 'Gene', (131, 134)) ('SDHB', 'Gene', (73, 77)) ('CNS tumors', 'Disease', 'MESH:D009369', (10, 20)) 89441 30971719 However, to elucidate the association between SDHB inactivation and hemangioblastoma, further comprehensive molecular analyses, including epigenetic analyses, should be conducted. ('SDHB', 'Gene', '6390', (46, 50)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (68, 84)) ('SDHB', 'Gene', (46, 50)) ('inactivation', 'Var', (51, 63)) ('hemangioblastoma', 'Disease', (68, 84)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (68, 84)) 89481 30220006 Moreover, family screening for genetic syndromes has increased, including those related to PPGLs (e.g., multiple endocrine neoplasia type 2 [MEN2A], Von Hippel Lindau syndrome [VHL], neurofibromatosis type 1 [NF1], and mutations in succinate dehydrogenase B, C, and D [SDHx]). ('D [SDHx]', 'Gene', (266, 274)) ('PPGLs', 'Chemical', '-', (91, 96)) ('Von Hippel Lindau syndrome', 'Disease', (149, 175)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (183, 200)) ('neurofibromatosis type 1', 'Gene', '4763', (183, 207)) ('MEN2A', 'Gene', (141, 146)) ('MEN2A', 'Gene', '5979', (141, 146)) ('VHL', 'Disease', (177, 180)) ('neoplasia', 'Phenotype', 'HP:0002664', (123, 132)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (113, 132)) ('NF1', 'Gene', '4763', (209, 212)) ('Von Hippel Lindau syndrome', 'Disease', 'MESH:D006623', (149, 175)) ('multiple endocrine neoplasia type', 'Disease', 'MESH:D018761', (104, 137)) ('NF1', 'Gene', (209, 212)) ('neurofibromatosis type 1', 'Gene', (183, 207)) ('VHL', 'Disease', 'MESH:D006623', (177, 180)) ('mutations', 'Var', (219, 228)) ('multiple endocrine neoplasia type', 'Disease', (104, 137)) ('PPGLs', 'Gene', (91, 96)) 89484 30220006 Eligible for inclusion were all patients with an International Classification of Diseases version 10 (ICD-10) code of E27.5 (adrenomedullary hyperfunction) and/or C74.1 (malignant neoplasm of medulla of adrenal gland) being admitted and/or attending the outpatient clinic between June 2005 and January 2018 at the Department of Endocrinology, Metabolism and Diabetes, Karolinska University Hospital, Stockholm, Sweden. ('code of E27.5', 'Var', (110, 123)) ('patients', 'Species', '9606', (32, 40)) ('men', 'Species', '9606', (320, 323)) ('malignant neoplasm', 'Disease', (170, 188)) ('Metabolism and Diabetes', 'Disease', 'MESH:D003920', (343, 366)) ('malignant neoplasm', 'Disease', 'MESH:D009369', (170, 188)) ('neoplasm of medulla of adrenal', 'Phenotype', 'HP:0100642', (180, 210)) ('neoplasm', 'Phenotype', 'HP:0002664', (180, 188)) ('C74.1', 'Var', (163, 168)) ('outpatient', 'Species', '9606', (254, 264)) 89500 30220006 Moreover, two patients with adrenocortical cancers and concomitant catecholamine excess but without an eligible ICD-code (E275 or C741) were known to us as well but were not included and have been presented elsewhere. ('cancers', 'Phenotype', 'HP:0002664', (43, 50)) ('adrenocortical cancers', 'Disease', (28, 50)) ('adrenocortical cancers', 'Disease', 'MESH:D000306', (28, 50)) ('catecholamine', 'Chemical', 'MESH:D002395', (67, 80)) ('E275', 'Var', (122, 126)) ('C741', 'Var', (130, 134)) ('patients', 'Species', '9606', (14, 22)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (67, 87)) ('catecholamine excess', 'MPA', (67, 87)) 89506 30220006 At diagnosis doxazosin was initiated and up-titrated in 85 patients (79%), phenoxybenzamine in 19 (18%), intravenous phentolamine in one (1%), and no alpha-blockade in three (3%; two patients had an unclear abdominal tumor which on histology turned out to be paragangliomas, of which one was converted to open surgery; one was "cured" by an acute necrosis of the pheochromocytoma and therefore had no alpha-blockade prior to surgery; none had any further surgical complications). ('abdominal tumor', 'Disease', (207, 222)) ('tumor', 'Phenotype', 'HP:0002664', (217, 222)) ('doxazosin', 'Chemical', 'MESH:D017292', (13, 22)) ('necrosis of the pheochromocytoma', 'Disease', (347, 379)) ('phentolamine', 'Chemical', 'MESH:D010646', (117, 129)) ('abdominal tumor', 'Disease', 'MESH:D015746', (207, 222)) ('phenoxybenzamine', 'Var', (75, 91)) ('patients', 'Species', '9606', (59, 67)) ('paragangliomas', 'Disease', (259, 273)) ('paragangliomas', 'Disease', 'MESH:D010235', (259, 273)) ('paragangliomas', 'Phenotype', 'HP:0002668', (259, 273)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (363, 379)) ('necrosis of the pheochromocytoma', 'Disease', 'MESH:D010673', (347, 379)) ('paraganglioma', 'Phenotype', 'HP:0002668', (259, 272)) ('patients', 'Species', '9606', (183, 191)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (75, 91)) 89514 30220006 However, in those with negative testing, variants of unknown significance were found in three individuals (NF1, VHL, and MAX). ('VHL', 'Disease', (112, 115)) ('variants', 'Var', (41, 49)) ('VHL', 'Disease', 'MESH:D006623', (112, 115)) ('NF1', 'Gene', '4763', (107, 110)) ('found', 'Reg', (79, 84)) ('NF1', 'Gene', (107, 110)) 89515 30220006 Of the five patients who developed PPGL-related metastasis (tumor size at adrenalectomy: 5.5, 9.5, 10.5, 10.8, and 12 cm, respectively), two (40%) had a KI67 >2% (3% and 12%, respectively) at surgery, while the other three patients (60%) had a KI67 <=1%. ('patients', 'Species', '9606', (223, 231)) ('KI67', 'Var', (153, 157)) ('patients', 'Species', '9606', (12, 20)) ('tumor', 'Disease', (60, 65)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('metastasis', 'CPA', (48, 58)) ('PPGL-related', 'Gene', (35, 47)) 89517 30220006 However, compared to patients without PPGL-metastasis with lower KI67, the patients with higher KI67 had shorter follow-up time (2.5[2-5] vs. 10[6-13] years, P < 0.001) and were younger (32[23-62] vs. 59[48-71] years, P = 0.002). ('patients', 'Species', '9606', (21, 29)) ('shorter', 'NegReg', (105, 112)) ('KI67', 'Var', (96, 100)) ('patients', 'Species', '9606', (75, 83)) 89528 30220006 While the proportion of cases with histology suspicious of malignancy was not significantly higher in the symptomatic PPGL group, the group did have significantly increased KI67 compared to the other groups (Table 1). ('malignancy', 'Disease', (59, 69)) ('KI67', 'Var', (173, 177)) ('malignancy', 'Disease', 'MESH:D009369', (59, 69)) ('increased', 'PosReg', (163, 172)) 89536 30220006 The proportion of cases with histology suspicious of malignancy and KI67 were comparable between the groups (Table 3). ('malignancy', 'Disease', 'MESH:D009369', (53, 63)) ('KI67', 'Var', (68, 72)) ('malignancy', 'Disease', (53, 63)) 89572 30220006 Thus, surgery in PPGL can lead to resolution of diabetes, or at least dramatically improve glycemic control. ('diabetes', 'Disease', (48, 56)) ('PPGL', 'Gene', (17, 21)) ('diabetes', 'Disease', 'MESH:D003920', (48, 56)) ('resolution', 'Disease', (34, 44)) ('glycemic control', 'MPA', (91, 107)) ('improve', 'PosReg', (83, 90)) ('surgery', 'Var', (6, 13)) 89597 30068732 Germline SDHA mutations in children and adults with cancer Mutations in succinate dehydrogenase complex genes predispose to familial paraganglioma-pheochromocytoma syndrome (FPG) and gastrointestinal stromal tumors (GIST). ('FPG', 'Disease', 'None', (174, 177)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (183, 214)) ('SDHA', 'Gene', (9, 13)) ('cancer', 'Disease', 'MESH:D009369', (52, 58)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (183, 214)) ('paraganglioma', 'Phenotype', 'HP:0002668', (133, 146)) ('SDHA', 'Gene', '6389', (9, 13)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (124, 146)) ('succinate dehydrogenase', 'Gene', (72, 95)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (147, 163)) ('paraganglioma-pheochromocytoma syndrome', 'Disease', 'MESH:D010673', (133, 172)) ('mutations', 'Var', (14, 23)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (183, 213)) ('predispose to', 'Reg', (110, 123)) ('FPG', 'Disease', (174, 177)) ('gastrointestinal stromal tumors', 'Disease', (183, 214)) ('GIST', 'Phenotype', 'HP:0100723', (216, 220)) ('tumors', 'Phenotype', 'HP:0002664', (208, 214)) ('paraganglioma-pheochromocytoma syndrome', 'Disease', (133, 172)) ('cancer', 'Disease', (52, 58)) ('familial paraganglioma', 'Disease', (124, 146)) ('cancer', 'Phenotype', 'HP:0002664', (52, 58)) ('tumor', 'Phenotype', 'HP:0002664', (208, 213)) ('succinate dehydrogenase', 'Gene', '6390', (72, 95)) ('Mutations', 'Var', (59, 68)) ('children', 'Species', '9606', (27, 35)) 89598 30068732 Here we describe cancer patients undergoing agnostic germline testing at Memorial Sloan Kettering Cancer Center and found to harbor germline SDHA mutations. ('mutations', 'Var', (146, 155)) ('Cancer', 'Phenotype', 'HP:0002664', (98, 104)) ('cancer', 'Disease', 'MESH:D009369', (17, 23)) ('SDHA', 'Gene', (141, 145)) ('cancer', 'Disease', (17, 23)) ('patients', 'Species', '9606', (24, 32)) ('SDHA', 'Gene', '6389', (141, 145)) ('cancer', 'Phenotype', 'HP:0002664', (17, 23)) 89601 30068732 Immunohistochemical staining and assessment of patient tumors for second hits and loss of heterozygosity in SDHA confirmed GIST as an SDHA-associated tumor and suggests SDHA germline mutations may be a driver in neuroblastoma tumorigenesis. ('tumor', 'Disease', 'MESH:D009369', (55, 60)) ('tumors', 'Phenotype', 'HP:0002664', (55, 61)) ('tumor', 'Disease', 'MESH:D009369', (226, 231)) ('tumor', 'Phenotype', 'HP:0002664', (150, 155)) ('SDHA', 'Gene', (169, 173)) ('SDHA', 'Gene', '6389', (169, 173)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('GIST', 'Phenotype', 'HP:0100723', (123, 127)) ('neuroblastoma', 'Disease', (212, 225)) ('tumors', 'Disease', (55, 61)) ('tumor', 'Phenotype', 'HP:0002664', (226, 231)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (212, 225)) ('SDHA', 'Gene', (134, 138)) ('patient', 'Species', '9606', (47, 54)) ('neuroblastoma', 'Disease', 'MESH:D009447', (212, 225)) ('SDHA', 'Gene', (108, 112)) ('tumors', 'Disease', 'MESH:D009369', (55, 61)) ('SDHA', 'Gene', '6389', (134, 138)) ('loss', 'Var', (82, 86)) ('tumor', 'Disease', (150, 155)) ('SDHA', 'Gene', '6389', (108, 112)) ('tumor', 'Disease', 'MESH:D009369', (150, 155)) ('tumor', 'Disease', (55, 60)) ('tumor', 'Disease', (226, 231)) 89607 30068732 In medical practice, the clinical relevance of the succinate dehydrogenase energy complex has emerged across a number of specialties including medical genetics, endocrinology, and oncology, and mutations in the succinate dehydrogenase complex are described in cancer-predisposing and nonmalignant-related phenotypes. ('succinate dehydrogenase', 'Gene', (211, 234)) ('cancer', 'Phenotype', 'HP:0002664', (260, 266)) ('cancer', 'Disease', 'MESH:D009369', (260, 266)) ('succinate dehydrogenase', 'Gene', '6390', (51, 74)) ('mutations', 'Var', (194, 203)) ('cancer', 'Disease', (260, 266)) ('succinate dehydrogenase', 'Gene', (51, 74)) ('succinate dehydrogenase', 'Gene', '6390', (211, 234)) ('oncology', 'Phenotype', 'HP:0002664', (180, 188)) 89608 30068732 Germline alterations in the SDHB, SDHC, and SDHD genes and, to a lesser extent, the SDHA gene predispose to familial paraganglioma, pheochromocytoma, and GIST tumors. ('pheochromocytoma', 'Disease', 'MESH:D010673', (132, 148)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('SDHC', 'Gene', '6391', (34, 38)) ('pheochromocytoma', 'Disease', (132, 148)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (132, 148)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (108, 130)) ('paraganglioma', 'Phenotype', 'HP:0002668', (117, 130)) ('SDHB', 'Gene', '6390', (28, 32)) ('GIST', 'Phenotype', 'HP:0100723', (154, 158)) ('SDHC', 'Gene', (34, 38)) ('SDHD', 'Gene', '6392', (44, 48)) ('alterations', 'Var', (9, 20)) ('GIST tumors', 'Disease', (154, 165)) ('SDHA', 'Gene', (84, 88)) ('familial paraganglioma', 'Disease', (108, 130)) ('SDHB', 'Gene', (28, 32)) ('SDHA', 'Gene', '6389', (84, 88)) ('predispose', 'Reg', (94, 104)) ('SDHD', 'Gene', (44, 48)) ('tumors', 'Phenotype', 'HP:0002664', (159, 165)) ('GIST tumors', 'Disease', 'MESH:D046152', (154, 165)) 89612 30068732 As next-generation sequencing (NGS) has evolved and tumor/normal sequencing efforts have been deployed by comprehensive cancer sequencing centers, mutations in the SDH complex genes have been detected in patients with non-FPG or GIST. ('cancer', 'Phenotype', 'HP:0002664', (120, 126)) ('mutations', 'Var', (147, 156)) ('FPG', 'Disease', (222, 225)) ('patients', 'Species', '9606', (204, 212)) ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('tumor', 'Disease', (52, 57)) ('SDH', 'Gene', (164, 167)) ('FPG', 'Disease', 'None', (222, 225)) ('cancer', 'Disease', (120, 126)) ('cancer', 'Disease', 'MESH:D009369', (120, 126)) ('SDH', 'Gene', '6390', (164, 167)) ('detected', 'Reg', (192, 200)) ('tumor', 'Disease', 'MESH:D009369', (52, 57)) ('GIST', 'Phenotype', 'HP:0100723', (229, 233)) 89613 30068732 Here we describe germline SDHA mutations harbored by patients treated at Memorial Sloan Kettering Cancer Center (MSK) who consented to participation in an institutional 12-245 tumor/normal sequencing study. ('mutations', 'Var', (31, 40)) ('tumor', 'Phenotype', 'HP:0002664', (176, 181)) ('patients', 'Species', '9606', (53, 61)) ('Cancer', 'Phenotype', 'HP:0002664', (98, 104)) ('tumor', 'Disease', (176, 181)) ('SDHA', 'Gene', '6389', (26, 30)) ('SDHA', 'Gene', (26, 30)) ('tumor', 'Disease', 'MESH:D009369', (176, 181)) 89614 30068732 Notably, in our series, the majority of patients shown to have an SDHA germline mutation were found to carry the same recurrent genomic alteration: c.91C>T (p. Arg31Ter). ('patients', 'Species', '9606', (40, 48)) ('SDHA', 'Gene', (66, 70)) ('Arg31Ter', 'SUBSTITUTION', 'None', (160, 168)) ('c.91C>T', 'Mutation', 'rs142441643', (148, 155)) ('Arg31Ter', 'Var', (160, 168)) ('SDHA', 'Gene', '6389', (66, 70)) 89615 30068732 Three additional mutations detected in our patients were c.1141C>G, c.1A>G (p. Met1Val), and two patients with an intragenic deletion encompassing exons 1-9. ('c.1A>G', 'Var', (68, 74)) ('patients', 'Species', '9606', (43, 51)) ('patients', 'Species', '9606', (97, 105)) ('c.1A>G', 'Mutation', 'rs1061517', (68, 74)) ('Met1Val', 'SUBSTITUTION', 'None', (79, 86)) ('c.1141C>G', 'Mutation', 'c.1141C>G', (57, 66)) ('c.1141C>G', 'Var', (57, 66)) ('Met1Val', 'Var', (79, 86)) 89616 30068732 Diagnoses for patients in our cohort with SDHA germline mutations included prostate and colon adenocarcinomas, endometrial carcinoma (and a secondary melanoma), urothelial carcinoma, poorly differentiated gastric carcinoma, multifocal gastrointestinal stromal tumors, clear cell renal cell carcinoma, triple negative breast cancer, and neuroblastoma. ('SDHA', 'Gene', (42, 46)) ('endometrial carcinoma', 'Disease', 'MESH:D016889', (111, 132)) ('breast cancer', 'Disease', 'MESH:D001943', (317, 330)) ('neuroblastoma', 'Disease', 'MESH:D009447', (336, 349)) ('breast cancer', 'Disease', (317, 330)) ('clear cell renal cell carcinoma', 'Phenotype', 'HP:0006770', (268, 299)) ('gastric carcinoma', 'Disease', 'MESH:D013274', (205, 222)) ('patients', 'Species', '9606', (14, 22)) ('SDHA', 'Gene', '6389', (42, 46)) ('tumors', 'Phenotype', 'HP:0002664', (260, 266)) ('gastric carcinoma', 'Disease', (205, 222)) ('mutations', 'Var', (56, 65)) ('urothelial carcinoma', 'Disease', 'MESH:D014526', (161, 181)) ('gastric carcinoma', 'Phenotype', 'HP:0012126', (205, 222)) ('melanoma', 'Phenotype', 'HP:0002861', (150, 158)) ('melanoma', 'Disease', (150, 158)) ('tumor', 'Phenotype', 'HP:0002664', (260, 265)) ('carcinoma', 'Phenotype', 'HP:0030731', (213, 222)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (279, 299)) ('clear cell renal cell carcinoma', 'Disease', 'MESH:C538614', (268, 299)) ('cancer', 'Phenotype', 'HP:0002664', (324, 330)) ('endometrial carcinoma', 'Disease', (111, 132)) ('multifocal gastrointestinal stromal tumors', 'Disease', 'None', (224, 266)) ('multifocal gastrointestinal stromal tumors', 'Disease', (224, 266)) ('colon adenocarcinomas', 'Disease', (88, 109)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (235, 265)) ('carcinoma', 'Phenotype', 'HP:0030731', (172, 181)) ('colon adenocarcinomas', 'Disease', 'MESH:D003110', (88, 109)) ('clear cell renal cell carcinoma', 'Disease', (268, 299)) ('carcinoma', 'Phenotype', 'HP:0030731', (290, 299)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (235, 266)) ('prostate', 'Disease', (75, 83)) ('breast cancer', 'Phenotype', 'HP:0003002', (317, 330)) ('urothelial carcinoma', 'Disease', (161, 181)) ('neuroblastoma', 'Disease', (336, 349)) ('melanoma', 'Disease', 'MESH:D008545', (150, 158)) ('carcinoma', 'Phenotype', 'HP:0030731', (99, 108)) ('carcinoma', 'Phenotype', 'HP:0030731', (123, 132)) ('endometrial carcinoma', 'Phenotype', 'HP:0012114', (111, 132)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (336, 349)) 89618 30068732 Within this cohort, 10 patients (0.2%) were found to harbor pathogenic germline SDHA mutations. ('SDHA', 'Gene', '6389', (80, 84)) ('patients', 'Species', '9606', (23, 31)) ('pathogenic', 'Reg', (60, 70)) ('SDHA', 'Gene', (80, 84)) ('mutations', 'Var', (85, 94)) 89619 30068732 Of these, 2/10 (20%) with a diagnosis of uterine endometrioid carcinoma and poorly differentiated carcinoma of the stomach harbored a deletion of exons 1-9, 1/10 (10%) with a diagnosis of urothelial bladder cancer carried the missense mutations c.1A>G (p.Met1Val), and 7/10 (70%) exhibited a SDHA c.91C>T (p.Arg31Ter) nonsense mutation. ('endometrioid carcinoma', 'Phenotype', 'HP:0012114', (49, 71)) ('c.1A>G (p.Met1Val', 'Var', (245, 262)) ('carcinoma of the stomach', 'Phenotype', 'HP:0006753', (98, 122)) ('bladder cancer', 'Phenotype', 'HP:0009725', (199, 213)) ('carcinoma', 'Disease', 'MESH:D002277', (98, 107)) ('endometrioid carcinoma', 'Disease', 'MESH:D016889', (49, 71)) ('cancer', 'Phenotype', 'HP:0002664', (207, 213)) ('urothelial bladder cancer', 'Disease', 'MESH:D001749', (188, 213)) ('carcinoma', 'Phenotype', 'HP:0030731', (62, 71)) ('p.Met1Val', 'Mutation', 'rs1061517', (253, 262)) ('carcinoma', 'Disease', (62, 71)) ('SDHA', 'Gene', (292, 296)) ('urothelial bladder cancer', 'Disease', (188, 213)) ('p.Arg31Ter', 'Mutation', 'rs142441643', (306, 316)) ('endometrioid carcinoma', 'Disease', (49, 71)) ('c.91C>T', 'Mutation', 'rs142441643', (297, 304)) ('SDHA', 'Gene', '6389', (292, 296)) ('carcinoma', 'Phenotype', 'HP:0030731', (98, 107)) ('c.1A>G', 'Mutation', 'rs1061517', (245, 251)) ('carcinoma', 'Disease', (98, 107)) ('carcinoma', 'Disease', 'MESH:D002277', (62, 71)) 89621 30068732 For one of these seven patients, additional evidence of a second somatic missense mutation, SDHA p.S445L, was revealed (patient with a GIST); 2/7 (28.6%) patients had a copy-number loss of the other SDHA allele on Chromosome 5 (neuroblastoma and GIST) (Table 1). ('neuroblastoma', 'Disease', 'MESH:D009447', (228, 241)) ('GIST', 'Phenotype', 'HP:0100723', (246, 250)) ('p.S445L', 'Mutation', 'rs1296066077', (97, 104)) ('patient', 'Species', '9606', (154, 161)) ('patients', 'Species', '9606', (23, 31)) ('neuroblastoma', 'Disease', (228, 241)) ('SDHA', 'Gene', (199, 203)) ('patient', 'Species', '9606', (120, 127)) ('copy-number loss', 'Var', (169, 185)) ('patients', 'Species', '9606', (154, 162)) ('SDHA', 'Gene', '6389', (92, 96)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (228, 241)) ('SDHA', 'Gene', '6389', (199, 203)) ('SDHA', 'Gene', (92, 96)) ('p.S445L', 'Var', (97, 104)) ('GIST', 'Phenotype', 'HP:0100723', (135, 139)) ('patient', 'Species', '9606', (23, 30)) 89622 30068732 As a point of reference, copy-number loss encompassing the SDHA locus occurs in <1% of cancer studies cataloged in the cBioPortal (Fig. ('cancer', 'Disease', (87, 93)) ('copy-number loss', 'Var', (25, 41)) ('SDHA', 'Gene', (59, 63)) ('cancer', 'Phenotype', 'HP:0002664', (87, 93)) ('SDHA', 'Gene', '6389', (59, 63)) ('cancer', 'Disease', 'MESH:D009369', (87, 93)) 89623 30068732 To elucidate phenotypes associated with the recurrent SDHA c.91C>T (p. Arg31Ter), we collaborated with The University of Utah and queried their Familial Paraganglioma/Pheochromocytoma Cancer Registry to determine cancer types, associated family histories of patients with the recurrent SDHA c.91C>T (p. Arg31Ter) germline mutation, and if typical tumor types segregated in families (Fig. ('Cancer', 'Phenotype', 'HP:0002664', (184, 190)) ('Familial Paraganglioma/Pheochromocytoma Cancer', 'Disease', 'MESH:C531777', (144, 190)) ('tumor', 'Phenotype', 'HP:0002664', (347, 352)) ('Arg31Ter', 'Var', (303, 311)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (153, 166)) ('SDHA', 'Gene', (286, 290)) ('SDHA', 'Gene', (54, 58)) ('cancer', 'Disease', (213, 219)) ('patients', 'Species', '9606', (258, 266)) ('SDHA', 'Gene', '6389', (286, 290)) ('cancer', 'Phenotype', 'HP:0002664', (213, 219)) ('Familial Paraganglioma/Pheochromocytoma Cancer', 'Disease', (144, 190)) ('SDHA', 'Gene', '6389', (54, 58)) ('Arg31Ter', 'SUBSTITUTION', 'None', (303, 311)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (167, 183)) ('Arg31Ter', 'Var', (71, 79)) ('c.91C>T', 'Mutation', 'rs142441643', (291, 298)) ('tumor', 'Disease', (347, 352)) ('c.91C>T', 'Mutation', 'rs142441643', (59, 66)) ('cancer', 'Disease', 'MESH:D009369', (213, 219)) ('tumor', 'Disease', 'MESH:D009369', (347, 352)) ('Arg31Ter', 'SUBSTITUTION', 'None', (71, 79)) 89625 30068732 We analyzed population frequencies of the SDHA alterations in our patient cohort compared to control databases. ('alterations', 'Var', (47, 58)) ('SDHA', 'Gene', '6389', (42, 46)) ('patient', 'Species', '9606', (66, 73)) ('SDHA', 'Gene', (42, 46)) 89626 30068732 The SDHA c.91C>T (p. Arg31Ter) mutation is found in the Exome Aggregation Consortium (ExAC) database at an allele frequency of 0.000174% (20 allele count/121,408 allele numbers) compared to 0.0018% (7 allele counts/4974 allele number) in the MSK population. ('SDHA', 'Gene', (4, 8)) ('Arg31Ter', 'Var', (21, 29)) ('SDHA', 'Gene', '6389', (4, 8)) ('c.91C>T', 'Mutation', 'rs142441643', (9, 16)) ('Arg31Ter', 'SUBSTITUTION', 'None', (21, 29)) 89627 30068732 This germline SDHA alteration and the others detected in our cohort meet the American College of Medical Genetics and Genomics Standards and Guidelines for pathogenicity based on the nature of the mutations, the rarity of the alterations in population control databases, and functional evidence. ('SDHA', 'Gene', '6389', (14, 18)) ('alteration', 'Var', (19, 29)) ('SDHA', 'Gene', (14, 18)) 89628 30068732 To confirm the pathogenicity of these SDHA mutations in this expanded spectrum of cancers, we examined patient tumors for second mutations in the SDHA gene, loss of heterozygosity or copy-number alterations of the SDHA locus, and retention of SDHA/B proteins determined by immunohistochemistry (IHC) (Table 1). ('tumor', 'Phenotype', 'HP:0002664', (111, 116)) ('cancers', 'Phenotype', 'HP:0002664', (82, 89)) ('tumors', 'Disease', (111, 117)) ('cancers', 'Disease', (82, 89)) ('copy-number alterations', 'Var', (183, 206)) ('loss', 'Var', (157, 161)) ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('tumors', 'Disease', 'MESH:D009369', (111, 117)) ('patient', 'Species', '9606', (103, 110)) ('SDHA', 'Gene', (214, 218)) ('SDHA', 'Gene', (38, 42)) ('SDHA', 'Gene', '6389', (214, 218)) ('cancers', 'Disease', 'MESH:D009369', (82, 89)) ('SDHA', 'Gene', '6389', (38, 42)) ('SDHA', 'Gene', (243, 247)) ('mutations', 'Var', (129, 138)) ('tumors', 'Phenotype', 'HP:0002664', (111, 117)) ('SDHA', 'Gene', (146, 150)) ('SDHA', 'Gene', '6389', (243, 247)) ('mutations', 'Var', (43, 52)) ('SDHA', 'Gene', '6389', (146, 150)) 89629 30068732 IHC loss for patients harboring germline SDHA mutations has previously been described in patients with GIST and a patient with GIST and secondary renal cell carcinoma. ('IHC', 'MPA', (0, 3)) ('renal cell carcinoma', 'Disease', (146, 166)) ('patient', 'Species', '9606', (89, 96)) ('mutations', 'Var', (46, 55)) ('SDHA', 'Gene', (41, 45)) ('GIST', 'Phenotype', 'HP:0100723', (127, 131)) ('patient', 'Species', '9606', (13, 20)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (146, 166)) ('GIST', 'Disease', (103, 107)) ('patients', 'Species', '9606', (13, 21)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (146, 166)) ('patients', 'Species', '9606', (89, 97)) ('GIST', 'Phenotype', 'HP:0100723', (103, 107)) ('carcinoma', 'Phenotype', 'HP:0030731', (157, 166)) ('patient', 'Species', '9606', (114, 121)) ('SDHA', 'Gene', '6389', (41, 45)) ('loss', 'NegReg', (4, 8)) 89632 30068732 In addition to patients tested as part of MSK-IMPACT, two patients were identified with the same recurrent SDHA c.91C>T (p. Arg31Ter) mutation in the University of Utah Familial Cancer Predisposition Registry. ('c.91C>T', 'Mutation', 'rs142441643', (112, 119)) ('patients', 'Species', '9606', (15, 23)) ('SDHA', 'Gene', '6389', (107, 111)) ('Familial Cancer', 'Disease', (169, 184)) ('Arg31Ter', 'Var', (124, 132)) ('Arg31Ter', 'SUBSTITUTION', 'None', (124, 132)) ('Familial Cancer', 'Disease', 'MESH:D009369', (169, 184)) ('SDHA', 'Gene', (107, 111)) ('Cancer', 'Phenotype', 'HP:0002664', (178, 184)) ('patients', 'Species', '9606', (58, 66)) 89634 30068732 As a means to functionally determine the impact of the germline SDHA mutations detected in our patients on cell lines, we performed mutagenesis experiments and measured citric acid cycle metabolite differences compared to a wild-type cell line for SDHA. ('mutations', 'Var', (69, 78)) ('patients', 'Species', '9606', (95, 103)) ('SDHA', 'Gene', '6389', (64, 68)) ('SDHA', 'Gene', (248, 252)) ('SDHA', 'Gene', (64, 68)) ('SDHA', 'Gene', '6389', (248, 252)) ('citric acid', 'Chemical', 'MESH:D019343', (169, 180)) ('citric acid cycle metabolite differences', 'MPA', (169, 209)) 89635 30068732 Functional interrogation of the SDHA alterations detected in our patient population revealed aberrant protein level production, increased accumulation of metabolites of the Krebs cycle with a significant increase in succinate to fumarate ratios in mutagenic cells compared to wild-type (Fig. ('SDHA', 'Gene', '6389', (32, 36)) ('succinate to fumarate ratios', 'MPA', (216, 244)) ('protein level production', 'MPA', (102, 126)) ('succinate', 'Chemical', 'MESH:D019802', (216, 225)) ('increase', 'PosReg', (204, 212)) ('increased accumulation', 'PosReg', (128, 150)) ('patient', 'Species', '9606', (65, 72)) ('alterations', 'Var', (37, 48)) ('SDHA', 'Gene', (32, 36)) ('Krebs', 'Chemical', '-', (173, 178)) ('fumarate', 'Chemical', 'MESH:D005650', (229, 237)) 89637 30068732 However, there are few examples in which unexpected germline mutations are detected in atypical cancers that are accompanied by additional supporting evidence of pathogenicity. ('atypical cancers', 'Disease', (87, 103)) ('cancer', 'Phenotype', 'HP:0002664', (96, 102)) ('germline mutations', 'Var', (52, 70)) ('atypical cancers', 'Disease', 'MESH:D009369', (87, 103)) ('cancers', 'Phenotype', 'HP:0002664', (96, 103)) ('detected', 'Reg', (75, 83)) 89638 30068732 This study revealed germline SDHA mutations in patients with the following cancer diagnoses: neuroblastoma, pheochromocytoma, melanoma, breast cancer, colon cancer, renal cell carcinoma, prostate cancer, gastric cancer, and endometrial cancer. ('endometrial cancer', 'Disease', (224, 242)) ('breast cancer', 'Disease', 'MESH:D001943', (136, 149)) ('cancer', 'Disease', 'MESH:D009369', (236, 242)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (108, 124)) ('breast cancer', 'Disease', (136, 149)) ('patients', 'Species', '9606', (47, 55)) ('endometrial cancer', 'Disease', 'MESH:D016889', (224, 242)) ('cancer', 'Disease', 'MESH:D009369', (157, 163)) ('cancer', 'Disease', 'MESH:D009369', (196, 202)) ('cancer', 'Phenotype', 'HP:0002664', (75, 81)) ('cancer', 'Disease', 'MESH:D009369', (212, 218)) ('pheochromocytoma', 'Disease', (108, 124)) ('gastric cancer', 'Disease', (204, 218)) ('cancer', 'Disease', 'MESH:D009369', (75, 81)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (108, 124)) ('colon cancer', 'Phenotype', 'HP:0003003', (151, 163)) ('cancer', 'Disease', (143, 149)) ('melanoma', 'Phenotype', 'HP:0002861', (126, 134)) ('melanoma', 'Disease', (126, 134)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (165, 185)) ('neuroblastoma', 'Disease', (93, 106)) ('cancer', 'Phenotype', 'HP:0002664', (143, 149)) ('gastric cancer', 'Disease', 'MESH:D013274', (204, 218)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (165, 185)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (93, 106)) ('cancer', 'Disease', (236, 242)) ('cancer', 'Disease', (212, 218)) ('cancer', 'Disease', (196, 202)) ('SDHA', 'Gene', (29, 33)) ('cancer', 'Disease', (157, 163)) ('colon cancer', 'Disease', 'MESH:D015179', (151, 163)) ('neuroblastoma', 'Disease', 'MESH:D009447', (93, 106)) ('cancer', 'Phenotype', 'HP:0002664', (212, 218)) ('cancer', 'Phenotype', 'HP:0002664', (196, 202)) ('cancer', 'Phenotype', 'HP:0002664', (157, 163)) ('SDHA', 'Gene', '6389', (29, 33)) ('prostate cancer', 'Disease', 'MESH:D011471', (187, 202)) ('cancer', 'Disease', (75, 81)) ('gastric cancer', 'Phenotype', 'HP:0012126', (204, 218)) ('breast cancer', 'Phenotype', 'HP:0003002', (136, 149)) ('endometrial cancer', 'Phenotype', 'HP:0012114', (224, 242)) ('renal cell carcinoma', 'Disease', (165, 185)) ('cancer', 'Disease', 'MESH:D009369', (143, 149)) ('prostate cancer', 'Phenotype', 'HP:0012125', (187, 202)) ('melanoma', 'Disease', 'MESH:D008545', (126, 134)) ('colon cancer', 'Disease', (151, 163)) ('mutations', 'Var', (34, 43)) ('carcinoma', 'Phenotype', 'HP:0030731', (176, 185)) ('prostate cancer', 'Disease', (187, 202)) 89641 30068732 Family history data suggest the SDHA c.91C>T (p.Arg31Ter) allelic variant has a low penetrance and perhaps does not play an oncogenic role in cancers other than neuroblastoma and GIST. ('c.91C>T', 'Mutation', 'rs142441643', (37, 44)) ('cancers', 'Disease', 'MESH:D009369', (142, 149)) ('c.91C>T', 'Var', (37, 44)) ('SDHA', 'Gene', '6389', (32, 36)) ('cancers', 'Disease', (142, 149)) ('SDHA', 'Gene', (32, 36)) ('GIST', 'Phenotype', 'HP:0100723', (179, 183)) ('cancer', 'Phenotype', 'HP:0002664', (142, 148)) ('neuroblastoma', 'Disease', 'MESH:D009447', (161, 174)) ('neuroblastoma', 'Disease', (161, 174)) ('low penetrance', 'MPA', (80, 94)) ('cancers', 'Phenotype', 'HP:0002664', (142, 149)) ('p.Arg31Ter', 'Mutation', 'rs142441643', (46, 56)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (161, 174)) 89642 30068732 Potential reasons second mutational hits or loss of heterozygosity were not observed in cancer types other than neuroblastoma and GIST include epigenetic alterations and cryptic second hits not detected by our sequencing methodology. ('cancer', 'Disease', (88, 94)) ('cancer', 'Disease', 'MESH:D009369', (88, 94)) ('GIST', 'Phenotype', 'HP:0100723', (130, 134)) ('neuroblastoma', 'Disease', 'MESH:D009447', (112, 125)) ('neuroblastoma', 'Disease', (112, 125)) ('cancer', 'Phenotype', 'HP:0002664', (88, 94)) ('epigenetic alterations', 'Var', (143, 165)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (112, 125)) 89643 30068732 These results have implications in regard to cancer screening and reproductive counseling for patients and family members harboring germline SDHA alterations. ('patients', 'Species', '9606', (94, 102)) ('cancer', 'Phenotype', 'HP:0002664', (45, 51)) ('alterations', 'Var', (146, 157)) ('SDHA', 'Gene', (141, 145)) ('cancer', 'Disease', 'MESH:D009369', (45, 51)) ('cancer', 'Disease', (45, 51)) ('SDHA', 'Gene', '6389', (141, 145)) 89644 30068732 Our results indicate that neuroblastoma may be a tumor type to consider for screening SDHA mutation carriers if additional evidence surfaces from large scale sequencing studies. ('tumor', 'Disease', 'MESH:D009369', (49, 54)) ('SDHA', 'Gene', '6389', (86, 90)) ('mutation', 'Var', (91, 99)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('neuroblastoma', 'Disease', 'MESH:D009447', (26, 39)) ('tumor', 'Disease', (49, 54)) ('neuroblastoma', 'Disease', (26, 39)) ('SDHA', 'Gene', (86, 90)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (26, 39)) 89645 30068732 Of note, a germline SDHB mutation was reported in a neuroblastoma patient participating in the Pediatric Cancer Genome Project. ('neuroblastoma', 'Disease', (52, 65)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (52, 65)) ('Cancer', 'Phenotype', 'HP:0002664', (105, 111)) ('mutation', 'Var', (25, 33)) ('patient', 'Species', '9606', (66, 73)) ('SDHB', 'Gene', '6390', (20, 24)) ('neuroblastoma', 'Disease', 'MESH:D009447', (52, 65)) ('SDHB', 'Gene', (20, 24)) 89646 30068732 In conclusion, this study reports children and adults with SDHA germline mutations and various cancers. ('SDHA', 'Gene', (59, 63)) ('cancers', 'Phenotype', 'HP:0002664', (95, 102)) ('cancers', 'Disease', (95, 102)) ('cancers', 'Disease', 'MESH:D009369', (95, 102)) ('germline mutations', 'Var', (64, 82)) ('SDHA', 'Gene', '6389', (59, 63)) ('cancer', 'Phenotype', 'HP:0002664', (95, 101)) ('children', 'Species', '9606', (34, 42)) 89647 30068732 Additional supporting evidence of the SDHA mutations detected in our patient cohort as pathogenic was revealed through biochemical studies for patients with neuroblastoma and GIST. ('SDHA', 'Gene', (38, 42)) ('patient', 'Species', '9606', (143, 150)) ('neuroblastoma', 'Disease', 'MESH:D009447', (157, 170)) ('GIST', 'Phenotype', 'HP:0100723', (175, 179)) ('patients', 'Species', '9606', (143, 151)) ('mutations', 'Var', (43, 52)) ('neuroblastoma', 'Disease', (157, 170)) ('patient', 'Species', '9606', (69, 76)) ('SDHA', 'Gene', '6389', (38, 42)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (157, 170)) 89656 30068732 Of note, copy-number loss encompassing SDHA occurs in <1% of cancers studied and cataloged in the cBioPortal (Fig. ('cancers', 'Disease', 'MESH:D009369', (61, 68)) ('SDHA', 'Gene', '6389', (39, 43)) ('copy-number loss', 'Var', (9, 25)) ('cancers', 'Phenotype', 'HP:0002664', (61, 68)) ('cancers', 'Disease', (61, 68)) ('cancer', 'Phenotype', 'HP:0002664', (61, 67)) ('SDHA', 'Gene', (39, 43)) 89659 30068732 The following keywords and annotations were used: succinate dehydrogenase, germline, SDHA, SDHB, SDHC, SDHD, SDHAF2, pediatric cancer, oncology, supplemental, variant, annotations, mutations, neuroblastoma, gastrointestinal stromal tumor (GIST), and immunohistochemistry (IHC). ('SDHD', 'Gene', '6392', (103, 107)) ('SDHC', 'Gene', '6391', (97, 101)) ('succinate dehydrogenase', 'Gene', (50, 73)) ('neuroblastoma', 'Disease', (192, 205)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (192, 205)) ('mutations', 'Var', (181, 190)) ('neuroblastoma', 'Disease', 'MESH:D009447', (192, 205)) ('SDHA', 'Gene', (109, 113)) ('SDHD', 'Gene', (103, 107)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (207, 237)) ('cancer', 'Phenotype', 'HP:0002664', (127, 133)) ('SDHA', 'Gene', '6389', (109, 113)) ('SDHB', 'Gene', '6390', (91, 95)) ('pediatric cancer', 'Disease', 'MESH:D009369', (117, 133)) ('SDHC', 'Gene', (97, 101)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (207, 237)) ('SDHAF2', 'Gene', '54949', (109, 115)) ('pediatric cancer', 'Disease', (117, 133)) ('succinate dehydrogenase', 'Gene', '6390', (50, 73)) ('SDHAF2', 'Gene', (109, 115)) ('oncology', 'Phenotype', 'HP:0002664', (135, 143)) ('SDHA', 'Gene', (85, 89)) ('GIST', 'Phenotype', 'HP:0100723', (239, 243)) ('gastrointestinal stromal tumor', 'Disease', (207, 237)) ('SDHA', 'Gene', '6389', (85, 89)) ('tumor', 'Phenotype', 'HP:0002664', (232, 237)) ('SDHB', 'Gene', (91, 95)) 89672 30068732 The c.91C>T (p. Arg31Ter) variant in SDHA is entered eight times in ClinVar and annotated as pathogenic/likely pathogenic. ('c.91C>T', 'Mutation', 'rs142441643', (4, 11)) ('SDHA', 'Gene', '6389', (37, 41)) ('Arg31Ter', 'SUBSTITUTION', 'None', (16, 24)) ('SDHA', 'Gene', (37, 41)) ('Arg31Ter', 'Var', (16, 24)) 89673 30068732 The variant is linked with the Database for Short Genetic Variations (dbSNP), 142441643, and the National Center for Biotechnology (NCBI), rs142441643. ('rs142441643', 'Mutation', 'rs142441643', (139, 150)) ('142441643', 'Var', (78, 87)) ('rs142441643', 'Var', (139, 150)) 89882 24790902 Alpha blockade is usually achieved with noncompetitive blocker phenoxybenzamine 0.2-1 mg/Kg/day in divided doses, which might offer the theoretical advantage over competitive blocker in case of catecholamine surge. ('Alpha blockade', 'MPA', (0, 14)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (63, 79)) ('catecholamine surge', 'Phenotype', 'HP:0003334', (194, 213)) ('catecholamine', 'Chemical', 'MESH:D002395', (194, 207)) ('phenoxybenzamine', 'Var', (63, 79)) 89896 24790902 Hypotension can be severe, and might need phenylephrine, adrenaline or noradrenaline, or vasopressin infusions, especially in the patients receiving phenoxybenzamine. ('adrenaline', 'Chemical', 'MESH:D004837', (74, 84)) ('phenoxybenzamine', 'Var', (149, 165)) ('Hypotension', 'Phenotype', 'HP:0002615', (0, 11)) ('Hypotension', 'Disease', (0, 11)) ('vasopressin', 'Gene', '551', (89, 100)) ('vasopressin', 'Gene', (89, 100)) ('patients', 'Species', '9606', (130, 138)) ('noradrenaline', 'Chemical', 'MESH:D009638', (71, 84)) ('phenylephrine', 'Chemical', 'MESH:D010656', (42, 55)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (149, 165)) ('Hypotension', 'Disease', 'MESH:D007022', (0, 11)) ('adrenaline', 'Chemical', 'MESH:D004837', (57, 67)) 89987 21660268 Radiosurgery was also found to be effective in reducing the catecholamine secreting capacity of paraganglioma. ('reducing', 'NegReg', (47, 55)) ('paraganglioma', 'Disease', 'MESH:D010235', (96, 109)) ('Radiosurgery', 'Var', (0, 12)) ('catecholamine', 'Chemical', 'MESH:D002395', (60, 73)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('paraganglioma', 'Disease', (96, 109)) ('catecholamine secreting capacity', 'MPA', (60, 92)) 90011 21660268 Recent studies have verified that succinate dehydrogenase (SDH) gene mutations in germ line occur in at least 11% of non-familial head and neck paragangliomas, 8% of non-familial pheochromocytomas, 28% of malignant pheochromocytomas and 33% of extra-adrenal pheochromocytomas. ('succinate dehydrogenase', 'Gene', (34, 57)) ('paragangliomas', 'Phenotype', 'HP:0002668', (144, 158)) ('paraganglioma', 'Phenotype', 'HP:0002668', (144, 157)) ('SDH', 'Gene', (59, 62)) ('extra-adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (244, 275)) ('malignant pheochromocytomas', 'Disease', 'MESH:D010673', (205, 232)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (130, 158)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (215, 232)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (139, 158)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (179, 195)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (258, 274)) ('mutations', 'Var', (69, 78)) ('pheochromocytomas', 'Disease', (179, 196)) ('succinate dehydrogenase', 'Gene', '6390', (34, 57)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (179, 196)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (258, 275)) ('extra-adrenal pheochromocytomas', 'Phenotype', 'HP:0006737', (244, 275)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (250, 275)) ('pheochromocytomas', 'Disease', (258, 275)) ('malignant pheochromocytomas', 'Disease', (205, 232)) ('SDH', 'Gene', '6390', (59, 62)) ('extra-adrenal pheochromocytomas', 'Disease', (244, 275)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (215, 231)) ('pheochromocytomas', 'Disease', (215, 232)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (179, 196)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (215, 232)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (258, 275)) ('neck paragangliomas', 'Disease', (139, 158)) 90104 21155034 Germline mutations in six genes are related to familial pheochromocytoma. ('Germline mutations', 'Var', (0, 18)) ('related', 'Reg', (36, 43)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (47, 72)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (56, 72)) ('familial pheochromocytoma', 'Disease', (47, 72)) 90105 21155034 Prior to 2000, it was thought that familial pheochromocytoma was caused by germline-inactivating mutations in the RET proto-oncogene for MEN2, mutations in the tumor suppressor gene VHL, and mutations in the NF1 genes. ('mutations', 'Var', (97, 106)) ('VHL', 'Disease', 'MESH:D006623', (182, 185)) ('familial pheochromocytoma', 'Disease', (35, 60)) ('NF1', 'Gene', (208, 211)) ('RET', 'Gene', '5979', (114, 117)) ('VHL', 'Disease', (182, 185)) ('mutations', 'Var', (191, 200)) ('NF1', 'Gene', '4763', (208, 211)) ('tumor', 'Disease', 'MESH:D009369', (160, 165)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (44, 60)) ('RET', 'Gene', (114, 117)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (35, 60)) ('caused by', 'Reg', (65, 74)) ('tumor', 'Disease', (160, 165)) ('NF', 'Phenotype', 'HP:0001067', (208, 210)) ('mutations', 'Var', (143, 152)) 90107 21155034 Of these six genes, SDHB mutations are associated strongly with extra-adrenal and malignant pheochromocytoma. ('extra-adrenal', 'Disease', (64, 77)) ('mutations', 'Var', (25, 34)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (82, 108)) ('malignant pheochromocytoma', 'Disease', (82, 108)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (92, 108)) ('associated', 'Reg', (39, 49)) ('SDHB', 'Gene', '6390', (20, 24)) ('SDHB', 'Gene', (20, 24)) 90109 21155034 In a previous study, approximately one-fourth of patients with pheochromocytoma were found to have mutations, and some authors have suggested that genetic testing should be offered to all patients. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (63, 79)) ('patients', 'Species', '9606', (188, 196)) ('mutations', 'Var', (99, 108)) ('patients', 'Species', '9606', (49, 57)) ('pheochromocytoma', 'Disease', (63, 79)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (63, 79)) 90113 21155034 Four of these patients were found to have MEN2 and were diagnosed with pheochromocytoma only after surgery for medullary thyroid cancer; genetic testing was not performed in the majority of these patients. ('thyroid cancer', 'Disease', (121, 135)) ('cancer', 'Phenotype', 'HP:0002664', (129, 135)) ('MEN2', 'Var', (42, 46)) ('thyroid cancer', 'Disease', 'MESH:D013964', (121, 135)) ('diagnosed with', 'Reg', (56, 70)) ('pheochromocytoma', 'Disease', (71, 87)) ('patients', 'Species', '9606', (196, 204)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (71, 87)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (71, 87)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (111, 135)) ('patients', 'Species', '9606', (14, 22)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (121, 135)) 90131 21155034 In general, tumors that are large (> 5 cm) or have an extra-adrenal location have a higher risk for malignant disease, and paraganglioma in patients with SDHB gene mutations have a particularly high rate of malignant disease. ('malignant disease', 'Disease', (207, 224)) ('paraganglioma', 'Phenotype', 'HP:0002668', (123, 136)) ('paraganglioma', 'Disease', (123, 136)) ('SDHB', 'Gene', '6390', (154, 158)) ('paraganglioma', 'Disease', 'MESH:D010235', (123, 136)) ('malignant disease', 'Disease', 'MESH:D009369', (100, 117)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('patients', 'Species', '9606', (140, 148)) ('tumors', 'Disease', (12, 18)) ('SDHB', 'Gene', (154, 158)) ('malignant disease', 'Disease', (100, 117)) ('malignant disease', 'Disease', 'MESH:D009369', (207, 224)) ('mutations', 'Var', (164, 173)) ('tumors', 'Phenotype', 'HP:0002664', (12, 18)) ('tumors', 'Disease', 'MESH:D009369', (12, 18)) 90142 33247500 Unexpected obesity, rather than tumorigenesis, in a conditional mouse model of mitochondrial complex II deficiency Mutations in any of the genes encoding the four subunits of succinate dehydrogenase (SDH), a mitochondrial membrane-bound enzyme complex that is involved in both the tricarboxylic acid cycle and the electron transport chain, can lead to a variety of disorders. ('Mutations', 'Var', (115, 124)) ('mitochondrial complex II deficiency', 'Disease', (79, 114)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (281, 299)) ('obesity', 'Phenotype', 'HP:0001513', (11, 18)) ('SDH', 'Gene', '67680', (200, 203)) ('mitochondrial complex II deficiency', 'Disease', 'MESH:C565375', (79, 114)) ('obesity', 'Disease', 'MESH:D009765', (11, 18)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('succinate', 'Chemical', 'MESH:D019802', (175, 184)) ('obesity', 'Disease', (11, 18)) ('lead to', 'Reg', (344, 351)) ('SDH', 'Gene', (200, 203)) ('mitochondrial complex II deficiency', 'Phenotype', 'HP:0008314', (79, 114)) ('mouse', 'Species', '10090', (64, 69)) 90143 33247500 Recognized conditions with such mutations include Leigh syndrome and hereditary tumors such as pheochromocytoma and paraganglioma (PPGL), renal cell carcinoma, and gastrointestinal stromal tumor. ('PPGL', 'Chemical', '-', (131, 135)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('gastrointestinal stromal tumor', 'Disease', (164, 194)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) ('renal cell carcinoma', 'Disease', (138, 158)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (138, 158)) ('mutations', 'Var', (32, 41)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (50, 64)) ('paraganglioma', 'Phenotype', 'HP:0002668', (116, 129)) ('carcinoma', 'Phenotype', 'HP:0030731', (149, 158)) ('hereditary tumors', 'Disease', (69, 86)) ('Leigh syndrome', 'Disease', (50, 64)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (95, 129)) ('hereditary tumors', 'Disease', 'MESH:D030342', (69, 86)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (138, 158)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (164, 194)) ('tumors', 'Phenotype', 'HP:0002664', (80, 86)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (95, 111)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (164, 194)) 90144 33247500 Tumors appear in SDH mutation carriers with dominant inheritance due to loss of heterozygosity in susceptible cells. ('loss', 'NegReg', (72, 76)) ('SDH', 'Gene', (17, 20)) ('mutation', 'Var', (21, 29)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('SDH', 'Gene', '67680', (17, 20)) 90150 33247500 Interestingly, in other contexts similar mutations lead to hereditary tumors such as gastrointestinal stromal tumor (GIST) and pheochromocytoma and paraganglioma (PPGL). ('mutations', 'Var', (41, 50)) ('PPGL', 'Chemical', '-', (163, 167)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('hereditary tumors', 'Disease', (59, 76)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (85, 115)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('tumors', 'Phenotype', 'HP:0002664', (70, 76)) ('lead to', 'Reg', (51, 58)) ('gastrointestinal stromal tumor', 'Disease', (85, 115)) ('GIST', 'Phenotype', 'HP:0100723', (117, 121)) ('paraganglioma', 'Phenotype', 'HP:0002668', (148, 161)) ('hereditary tumors', 'Disease', 'MESH:D030342', (59, 76)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (127, 143)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (127, 161)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (85, 115)) 90151 33247500 It has been estimated that ~40% of PPGL tumors result from germline mutations promoting a pseudohypoxic phenotype, including nuclear mutations inactivating the four subunits of succinate dehydrogenase (SDHx) in the tricarboxylic acid (TCA) cycle. ('SDH', 'Gene', '67680', (202, 205)) ('PPGL', 'Chemical', '-', (35, 39)) ('PGL tumors', 'Disease', 'MESH:D010235', (36, 46)) ('result', 'Reg', (47, 53)) ('hypoxic', 'Disease', (96, 103)) ('hypoxic', 'Disease', 'MESH:D000860', (96, 103)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (215, 233)) ('tumors', 'Phenotype', 'HP:0002664', (40, 46)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('SDH', 'Gene', (202, 205)) ('PGL tumors', 'Disease', (36, 46)) ('succinate', 'Chemical', 'MESH:D019802', (177, 186)) ('promoting', 'PosReg', (78, 87)) ('inactivating', 'NegReg', (143, 155)) ('mutations', 'Var', (68, 77)) ('TCA', 'Chemical', 'MESH:D014233', (235, 238)) 90154 33247500 The resulting dysregulation of metabolism and epigenetics is tumorigenic in certain tissues. ('metabolism', 'MPA', (31, 41)) ('dysregulation', 'Var', (14, 27)) ('tumor', 'Disease', 'MESH:D009369', (61, 66)) ('tumor', 'Phenotype', 'HP:0002664', (61, 66)) ('epigenetics', 'Var', (46, 57)) ('Th', 'Gene', '21823', (0, 2)) ('tumor', 'Disease', (61, 66)) 90160 33247500 Unlike humans, heterozygosity for SDHx mutations does not predispose mice to PPGL. ('PPGL', 'Disease', (77, 81)) ('SDH', 'Gene', (34, 37)) ('PPGL', 'Chemical', '-', (77, 81)) ('mutations', 'Var', (39, 48)) ('mice', 'Species', '10090', (69, 73)) ('humans', 'Species', '9606', (7, 13)) ('SDH', 'Gene', '67680', (34, 37)) 90163 33247500 Our design used a TH promoter-driven Cre recombinase to trigger deletion of SDHC in TH+ cells. ('SDHC', 'Gene', (76, 80)) ('TH', 'Gene', '21823', (18, 20)) ('deletion', 'Var', (64, 72)) ('TH', 'Gene', '21823', (84, 86)) 90166 33247500 We hypothesized that this phenotype results from the deletion or altered behavior of SDHC-loss TH+ cells important for dopamine (DA) signaling in feeding behavior and obesity. ('altered', 'Reg', (65, 72)) ('SDHC-loss', 'Gene', (85, 94)) ('behavior', 'MPA', (73, 81)) ('deletion', 'Var', (53, 61)) ('obesity', 'Disease', 'MESH:D009765', (167, 174)) ('TH', 'Gene', '21823', (95, 97)) ('obesity', 'Disease', (167, 174)) ('dopamine', 'Chemical', 'MESH:D004298', (119, 127)) ('DA', 'Chemical', 'MESH:D004298', (129, 131)) ('obesity', 'Phenotype', 'HP:0001513', (167, 174)) 90175 33247500 In Cre+ cells, deletion of a transcriptional termination sequence (Lox-Stop-Lox) is activated, resulting in dominant negative p53 expression equivalent to a homozygous null p53 mutation. ('expression', 'MPA', (130, 140)) ('Lox', 'Gene', (76, 79)) ('Lox', 'Gene', (67, 70)) ('deletion', 'Var', (15, 23)) ('Lox', 'Gene', '16948', (67, 70)) ('Lox', 'Gene', '16948', (76, 79)) ('p53', 'Gene', (126, 129)) 90220 33247500 To avoid the embryonic lethality associated with systematic deletion of SDHC in homozygous floxed animals while knocking out SDHC expression in tissues believed susceptible to PGL tumorigenesis, we generated conditional SDHC mice with one or two copies of the floxed SDHC allele together with Cre recombinase under the control of the TH promoter. ('tumor', 'Phenotype', 'HP:0002664', (180, 185)) ('embryonic lethality', 'Disease', 'MESH:D020964', (13, 32)) ('deletion', 'Var', (60, 68)) ('embryonic lethality', 'Disease', (13, 32)) ('PGL tumor', 'Disease', (176, 185)) ('SDHC', 'Gene', (72, 76)) ('mice', 'Species', '10090', (225, 229)) ('TH', 'Gene', '21823', (334, 336)) ('PGL tumor', 'Disease', 'MESH:D010235', (176, 185)) ('rat', 'Species', '10116', (202, 205)) 90223 33247500 It has previously been shown that pseudohypoxia driven by PHD2 inactivation and chronic up-regulation of hypoxia-inducible factors (HIFs) in TH+ type I cells of the carotid bodies can lead to hypertrophy, a possible early stage of tumorigenesis. ('hypertrophy', 'Disease', (192, 203)) ('hypoxia', 'Disease', (40, 47)) ('hypertrophy', 'Disease', 'MESH:D006984', (192, 203)) ('hypoxia', 'Disease', (105, 112)) ('HIFs', 'Disease', (132, 136)) ('hypoxia', 'Disease', 'MESH:D000860', (40, 47)) ('PHD2', 'Gene', (58, 62)) ('hypoxia', 'Disease', 'MESH:D000860', (105, 112)) ('tumor', 'Disease', 'MESH:D009369', (231, 236)) ('inactivation', 'Var', (63, 75)) ('tumor', 'Phenotype', 'HP:0002664', (231, 236)) ('up-regulation', 'PosReg', (88, 101)) ('tumor', 'Disease', (231, 236)) ('PHD2', 'Gene', '112405', (58, 62)) ('HIFs', 'Disease', 'None', (132, 136)) ('TH', 'Gene', '21823', (141, 143)) ('lead to', 'Reg', (184, 191)) 90229 33247500 This result is consistent with the hypothesis that type I glomus cells of the CB undergo mild expansion in response to pseudohypoxia driven by succinate antagonism of prolylhydroxylase enzymes that normally target HIFs for proteolysis. ('hypoxia', 'Disease', (125, 132)) ('HIFs', 'Disease', 'None', (214, 218)) ('succinate', 'Chemical', 'MESH:D019802', (143, 152)) ('HIFs', 'Disease', (214, 218)) ('hypoxia', 'Disease', 'MESH:D000860', (125, 132)) ('antagonism', 'Var', (153, 163)) ('Th', 'Gene', '21823', (0, 2)) ('response', 'MPA', (107, 115)) 90266 33247500 This loss of TH protein raises the possibility that at least some TH+ cells of the hypothalamus are deleted upon loss of SDHC expression. ('TH', 'Gene', '21823', (13, 15)) ('SDHC', 'Gene', (121, 125)) ('loss', 'Var', (113, 117)) ('TH', 'Gene', '21823', (66, 68)) ('hypothalamus', 'Disease', (83, 95)) ('Th', 'Gene', '21823', (0, 2)) ('hypothalamus', 'Disease', 'MESH:D007029', (83, 95)) 90284 33247500 We originally set out to develop a mouse model of familial PPGL triggered by loss of SDH. ('familial PPGL', 'Disease', (50, 63)) ('SDH', 'Gene', (85, 88)) ('mouse', 'Species', '10090', (35, 40)) ('PPGL', 'Chemical', '-', (59, 63)) ('SDH', 'Gene', '67680', (85, 88)) ('loss', 'Var', (77, 81)) 90304 33247500 Similarly, lack of SDHD is reported to induce death of CB and adrenal medulla cells. ('SDHD', 'Gene', '66925', (19, 23)) ('SDHD', 'Gene', (19, 23)) ('lack', 'Var', (11, 15)) 90310 33247500 Moreover, other conditional obesity models have reported mild phenotypes and normal lifespan when the causative mutation was triggered after maturity. ('obesity', 'Disease', (28, 35)) ('obesity', 'Phenotype', 'HP:0001513', (28, 35)) ('obesity', 'Disease', 'MESH:D009765', (28, 35)) ('mutation', 'Var', (112, 120)) 90319 33247500 On this basis, we propose that inadequate catecholamine-mediated (especially DA-mediated) energy homeostasis is the likely mechanistic basis for the striking obese phenotype observed in this SDHC conditional loss model. ('catecholamine-mediated', 'MPA', (42, 64)) ('catecholamine', 'Chemical', 'MESH:D002395', (42, 55)) ('DA', 'Chemical', 'MESH:D004298', (77, 79)) ('obese', 'Disease', 'MESH:D009765', (158, 163)) ('SDHC', 'Gene', (191, 195)) ('obese', 'Disease', (158, 163)) ('conditional', 'Var', (196, 207)) ('inadequate', 'NegReg', (31, 41)) 90320 33247500 We show clear evidence of altered morphology of TH+ dopaminergic cells in the hypothalamus and the carotid bodies, suggesting smaller cells with altered subcellular TH localization in the former, and expansion in the latter (Figs. ('expansion', 'Var', (200, 209)) ('altered', 'Reg', (145, 152)) ('smaller', 'NegReg', (126, 133)) ('dopamine', 'Chemical', 'MESH:D004298', (52, 60)) ('hypothalamus', 'Disease', (78, 90)) ('cells', 'MPA', (134, 139)) ('TH', 'Gene', '21823', (48, 50)) ('hypothalamus', 'Disease', 'MESH:D007029', (78, 90)) ('TH', 'Gene', '21823', (165, 167)) 90326 33247500 Mutations in the leptin signaling pathway are often associated with diabetes, but diabetes is not observed in most chemically- or metabolically-induced obesity models. ('diabetes', 'Disease', 'MESH:D003920', (82, 90)) ('obesity', 'Disease', (152, 159)) ('diabetes', 'Disease', 'MESH:D003920', (68, 76)) ('associated', 'Reg', (52, 62)) ('Mutations', 'Var', (0, 9)) ('leptin', 'Gene', '16846', (17, 23)) ('diabetes', 'Disease', (68, 76)) ('leptin', 'Gene', (17, 23)) ('obesity', 'Phenotype', 'HP:0001513', (152, 159)) ('obesity', 'Disease', 'MESH:D009765', (152, 159)) ('diabetes', 'Disease', (82, 90)) 90334 33247500 For example, deletion of Bcl-x in TH+ cells generate smaller mice with lower brain mass. ('mice', 'Species', '10090', (61, 65)) ('Bcl-x', 'Gene', '12048', (25, 30)) ('deletion', 'Var', (13, 21)) ('TH', 'Gene', '21823', (34, 36)) ('brain mass', 'CPA', (77, 87)) ('Bcl-x', 'Gene', (25, 30)) ('rat', 'Species', '10116', (48, 51)) ('lower', 'NegReg', (71, 76)) 90389 32377128 III: Non-functional tumors with malignancy risk: For non-functional adrenal tumors, the indication for surgery is the risk of malignancy-related to the size of the lesion. ('malignancy', 'Disease', 'MESH:D009369', (126, 136)) ('tumors', 'Disease', (20, 26)) ('tumors', 'Disease', 'MESH:D009369', (20, 26)) ('malignancy', 'Disease', (126, 136)) ('adrenal tumors', 'Disease', 'MESH:D000310', (68, 82)) ('tumors', 'Phenotype', 'HP:0002664', (20, 26)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (68, 81)) ('tumors', 'Disease', (76, 82)) ('adrenal tumors', 'Disease', (68, 82)) ('tumors', 'Disease', 'MESH:D009369', (76, 82)) ('malignancy', 'Disease', 'MESH:D009369', (32, 42)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) ('tumor', 'Phenotype', 'HP:0002664', (20, 25)) ('malignancy', 'Disease', (32, 42)) ('non-functional', 'Var', (53, 67)) 90408 32377128 In the right adrenalectomy, there are some specific side-related problems as follows: liver injury, duodenum injury, vena cava injury, hepatic vein Injury, right adrenal vein Injury, kidney Injury, division of a polar renal artery, rupture of the adrenal capsule and injury of the diaphragm. ('liver injury', 'Disease', (86, 98)) ('vena cava injury', 'Disease', (117, 133)) ('kidney Injury', 'Disease', (183, 196)) ('duodenum injury', 'Disease', (100, 115)) ('hepatic vein Injury', 'Disease', 'MESH:D056486', (135, 154)) ('liver injury', 'Disease', 'MESH:D017093', (86, 98)) ('kidney Injury', 'Disease', 'MESH:D058186', (183, 196)) ('adrenal vein Injury', 'Disease', 'MESH:D000312', (162, 181)) ('hepatic vein Injury', 'Disease', (135, 154)) ('rupture', 'Disease', 'MESH:D012421', (232, 239)) ('rupture', 'Disease', (232, 239)) ('vena cava injury', 'Disease', 'MESH:D013479', (117, 133)) ('adrenal vein Injury', 'Disease', (162, 181)) ('division', 'Var', (198, 206)) ('duodenum injury', 'Disease', 'MESH:D004379', (100, 115)) ('injury', 'Disease', (267, 273)) 90611 29264463 Case Report of a Prolactinoma in a Patient With a Novel MAX Mutation and Bilateral Pheochromocytomas Pheochromocytomas are neuroendocrine tumors that can arise sporadically or be inherited as a familial disease, and they may occur in isolation or as part of a multitumor syndrome. ('Pheochromocytomas', 'Disease', (101, 118)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (101, 118)) ('Prolactinoma', 'Phenotype', 'HP:0040278', (17, 29)) ('MAX', 'Gene', '4149', (56, 59)) ('familial disease', 'Disease', (194, 210)) ('Pheochromocytomas', 'Disease', (83, 100)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (83, 100)) ('Mutation', 'Var', (60, 68)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (123, 144)) ('Prolactinoma', 'Disease', 'MESH:D015175', (17, 29)) ('multitumor syndrome', 'Disease', 'MESH:D013577', (260, 279)) ('multitumor syndrome', 'Disease', (260, 279)) ('Patient', 'Species', '9606', (35, 42)) ('tumor', 'Phenotype', 'HP:0002664', (138, 143)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (123, 144)) ('MAX', 'Gene', (56, 59)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (101, 118)) ('tumors', 'Phenotype', 'HP:0002664', (138, 144)) ('tumor', 'Phenotype', 'HP:0002664', (265, 270)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (83, 100)) ('neuroendocrine tumors', 'Disease', (123, 144)) ('familial disease', 'Disease', 'MESH:D030342', (194, 210)) ('Prolactinoma', 'Disease', (17, 29)) 90616 29264463 To our knowledge, this case is the first report of prolactinoma in a patient with a MAX mutation, which suggests the possibility of germline MAX mutations also contributing to the development of prolactinomas. ('prolactinoma', 'Disease', 'MESH:D015175', (51, 63)) ('mutation', 'Var', (88, 96)) ('prolactinomas', 'Disease', 'MESH:D015175', (195, 208)) ('MAX', 'Gene', (84, 87)) ('MAX', 'Gene', (141, 144)) ('prolactinoma', 'Disease', 'MESH:D015175', (195, 207)) ('MAX', 'Gene', '4149', (141, 144)) ('prolactinoma', 'Disease', (195, 207)) ('prolactinoma', 'Phenotype', 'HP:0040278', (195, 207)) ('prolactinomas', 'Disease', (195, 208)) ('patient', 'Species', '9606', (69, 76)) ('prolactinoma', 'Disease', (51, 63)) ('contributing', 'Reg', (160, 172)) ('MAX', 'Gene', '4149', (84, 87)) ('prolactinoma', 'Phenotype', 'HP:0040278', (51, 63)) 90617 29264463 This report of a prolactinoma in a patient with a MAX mutation and bilateral pheochromocytomas illustrates the possibility of MAX mutations contributing to the development of prolactinomas. ('contributing', 'Reg', (140, 152)) ('prolactinoma', 'Phenotype', 'HP:0040278', (17, 29)) ('MAX', 'Gene', (50, 53)) ('MAX', 'Gene', '4149', (126, 129)) ('bilateral pheochromocytomas', 'Disease', (67, 94)) ('prolactinomas', 'Disease', (175, 188)) ('prolactinoma', 'Disease', (17, 29)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (77, 93)) ('prolactinoma', 'Phenotype', 'HP:0040278', (175, 187)) ('prolactinoma', 'Disease', (175, 187)) ('prolactinoma', 'Disease', 'MESH:D015175', (17, 29)) ('prolactinomas', 'Disease', 'MESH:D015175', (175, 188)) ('MAX', 'Gene', '4149', (50, 53)) ('mutation', 'Var', (54, 62)) ('MAX', 'Gene', (126, 129)) ('patient', 'Species', '9606', (35, 42)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (77, 94)) ('prolactinoma', 'Disease', 'MESH:D015175', (175, 187)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (67, 94)) 90621 29264463 Familial pheochromocytomas can be associated with genetic syndromes such as multiple endocrine neoplasia type 2 (RET proto-oncogene mutation), von Hippel-Lindau disease (VHL mutation), and neurofibromatosis type 1 (NF1 mutation), but they may also present in isolation, as in the case of succinate dehydrogenase complex (SDH A, B, C, D, and AF2), and transmembrane protein 127 (TMEM127) mutations. ('TMEM127', 'Gene', '55654', (378, 385)) ('NF1', 'Gene', (215, 218)) ('neurofibromatosis type 1', 'Gene', (189, 213)) ('genetic syndrome', 'Disease', 'MESH:D030342', (50, 66)) ('VHL', 'Disease', (170, 173)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (189, 206)) ('multiple endocrine neoplasia type 2', 'Disease', (76, 111)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (9, 26)) ('RET', 'Gene', (113, 116)) ('AF2', 'Gene', (341, 344)) ('mutations', 'Var', (387, 396)) ('Familial pheochromocytomas', 'Disease', (0, 26)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (143, 168)) ('neurofibromatosis type 1', 'Gene', '4763', (189, 213)) ('transmembrane protein 127', 'Gene', '55654', (351, 376)) ('SDH', 'Gene', '6390', (321, 324)) ('von Hippel-Lindau disease', 'Disease', (143, 168)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (76, 111)) ('neoplasia', 'Phenotype', 'HP:0002664', (95, 104)) ('TMEM127', 'Gene', (378, 385)) ('VHL', 'Disease', 'MESH:D006623', (170, 173)) ('associated', 'Reg', (34, 44)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (9, 25)) ('genetic syndrome', 'Disease', (50, 66)) ('NF1', 'Gene', '4763', (215, 218)) ('transmembrane protein 127', 'Gene', (351, 376)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (85, 104)) ('RET', 'Gene', '5979', (113, 116)) ('Familial pheochromocytomas', 'Disease', 'MESH:C531777', (0, 26)) ('SDH', 'Gene', (321, 324)) 90622 29264463 recently identified mutations in the tumor suppressor MYC-associated factor X gene (MAX) as a cause of hereditary pheochromocytoma. ('tumor', 'Disease', 'MESH:D009369', (37, 42)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (114, 130)) ('hereditary pheochromocytoma', 'Disease', 'MESH:D010673', (103, 130)) ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('tumor', 'Disease', (37, 42)) ('hereditary pheochromocytoma', 'Disease', (103, 130)) ('MAX', 'Gene', '4149', (84, 87)) ('MAX', 'Gene', (84, 87)) ('cause', 'Reg', (94, 99)) ('MYC-associated factor X', 'Gene', '4149', (54, 77)) ('mutations', 'Var', (20, 29)) ('MYC-associated factor X', 'Gene', (54, 77)) 90623 29264463 They examined 62 patients with pheochromocytomas and detected unique MAX mutations in eight families, totaling 12 affected patients. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (31, 48)) ('MAX', 'Gene', (69, 72)) ('MAX', 'Gene', '4149', (69, 72)) ('pheochromocytomas', 'Disease', (31, 48)) ('patients', 'Species', '9606', (123, 131)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (31, 48)) ('patients', 'Species', '9606', (17, 25)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (31, 47)) ('mutations', 'Var', (73, 82)) 90624 29264463 An investigation of 1694 pheochromocytoma/paraganglioma patients without mutations in RET, VHL, SDHB, SDHC, SDHD, or TMEM127 identified germline MAX mutations in 23 patients and somatic MAX mutations in 4 of 245 tumors. ('SDHC', 'Gene', (102, 106)) ('patients', 'Species', '9606', (56, 64)) ('MAX', 'Gene', (145, 148)) ('MAX', 'Gene', (186, 189)) ('patients', 'Species', '9606', (165, 173)) ('tumor', 'Phenotype', 'HP:0002664', (212, 217)) ('RET', 'Gene', '5979', (86, 89)) ('pheochromocytoma/paraganglioma', 'Disease', (25, 55)) ('tumors', 'Phenotype', 'HP:0002664', (212, 218)) ('VHL', 'Disease', 'MESH:D006623', (91, 94)) ('SDHD', 'Gene', '6392', (108, 112)) ('TMEM127', 'Gene', (117, 124)) ('mutations', 'Var', (149, 158)) ('SDHC', 'Gene', '6391', (102, 106)) ('tumors', 'Disease', (212, 218)) ('MAX', 'Gene', '4149', (145, 148)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (25, 55)) ('RET', 'Gene', (86, 89)) ('MAX', 'Gene', '4149', (186, 189)) ('SDHB', 'Gene', '6390', (96, 100)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (25, 41)) ('SDHD', 'Gene', (108, 112)) ('TMEM127', 'Gene', '55654', (117, 124)) ('tumors', 'Disease', 'MESH:D009369', (212, 218)) ('paraganglioma', 'Phenotype', 'HP:0002668', (42, 55)) ('SDHB', 'Gene', (96, 100)) ('VHL', 'Disease', (91, 94)) 90625 29264463 These MAX mutation carriers included patients with bilateral pheochromocytomas, as well as multiple pheochromocytomas within the same gland. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (100, 116)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (100, 117)) ('MAX', 'Gene', (6, 9)) ('patients', 'Species', '9606', (37, 45)) ('MAX', 'Gene', '4149', (6, 9)) ('multiple pheochromocytomas', 'Disease', (91, 117)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (51, 78)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (61, 78)) ('mutation', 'Var', (10, 18)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (61, 77)) ('multiple pheochromocytomas', 'Disease', 'MESH:D010673', (91, 117)) ('bilateral pheochromocytomas', 'Disease', (51, 78)) 90626 29264463 Another study of 153 pheochromocytoma/paraganglioma cases in patients presenting under age <40 years with multiple tumors identified genetic mutations in 73 patients (47%), one of which was a MAX mutation. ('MAX', 'Gene', '4149', (192, 195)) ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('multiple tumors', 'Disease', (106, 121)) ('multiple tumors', 'Disease', 'MESH:D009369', (106, 121)) ('pheochromocytoma/paraganglioma', 'Disease', (21, 51)) ('genetic mutations', 'Var', (133, 150)) ('paraganglioma', 'Phenotype', 'HP:0002668', (38, 51)) ('patients', 'Species', '9606', (61, 69)) ('patients', 'Species', '9606', (157, 165)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (21, 51)) ('tumors', 'Phenotype', 'HP:0002664', (115, 121)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (21, 37)) ('MAX', 'Gene', (192, 195)) 90627 29264463 Germline MAX mutations have been associated with pheochromocytoma, paraganglioma, and renal oncocytoma, whereas somatic MAX mutations have been linked to formation of other tumors, including endometrioid carcinoma, colon carcinoma, and small-cell lung carcinoma. ('MAX', 'Gene', '4149', (120, 123)) ('renal oncocytoma', 'Disease', 'MESH:C537750', (86, 102)) ('tumors', 'Phenotype', 'HP:0002664', (173, 179)) ('endometrioid carcinoma', 'Phenotype', 'HP:0012114', (191, 213)) ('linked', 'Reg', (144, 150)) ('colon carcinoma', 'Disease', (215, 230)) ('renal oncocytoma', 'Phenotype', 'HP:0011798', (86, 102)) ('paraganglioma', 'Disease', (67, 80)) ('carcinoma', 'Phenotype', 'HP:0030731', (221, 230)) ('tumor', 'Phenotype', 'HP:0002664', (173, 178)) ('MAX', 'Gene', (9, 12)) ('paraganglioma', 'Disease', 'MESH:D010235', (67, 80)) ('tumors', 'Disease', (173, 179)) ('endometrioid carcinoma', 'Disease', 'MESH:D016889', (191, 213)) ('colon carcinoma', 'Disease', 'MESH:D015179', (215, 230)) ('small-cell lung carcinoma', 'Disease', 'MESH:D055752', (236, 261)) ('MAX', 'Gene', (120, 123)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (49, 65)) ('carcinoma', 'Phenotype', 'HP:0030731', (204, 213)) ('carcinoma', 'Phenotype', 'HP:0030731', (252, 261)) ('tumors', 'Disease', 'MESH:D009369', (173, 179)) ('mutations', 'Var', (13, 22)) ('pheochromocytoma', 'Disease', (49, 65)) ('renal oncocytoma', 'Disease', (86, 102)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (49, 65)) ('endometrioid carcinoma', 'Disease', (191, 213)) ('small-cell lung carcinoma', 'Phenotype', 'HP:0030357', (236, 261)) ('small-cell lung carcinoma', 'Disease', (236, 261)) ('associated', 'Reg', (33, 43)) ('MAX', 'Gene', '4149', (9, 12)) 90648 29264463 2), and routine SDHB immunostaining showed low positive expression of SDHB protein, indicating a lack of mutated SDHA or SDHB. ('SDHB', 'Gene', '6390', (70, 74)) ('SDHB', 'Gene', (70, 74)) ('SDHB', 'Gene', (121, 125)) ('low', 'NegReg', (43, 46)) ('SDHA', 'Gene', '6389', (113, 117)) ('SDHB', 'Gene', '6390', (16, 20)) ('SDHB', 'Gene', (16, 20)) ('lack', 'NegReg', (97, 101)) ('protein', 'Protein', (75, 82)) ('mutated', 'Var', (105, 112)) ('SDHA', 'Gene', (113, 117)) ('SDHB', 'Gene', '6390', (121, 125)) 90661 29264463 Further analysis revealed a likely pathogenic MAX mutation c.296-1G>T (NM_002382), which has not been previously described. ('pathogenic', 'Reg', (35, 45)) ('c.296-1G>T', 'Mutation', 'c.296-1G>T', (59, 69)) ('c.296-1G>T', 'Var', (59, 69)) ('MAX', 'Gene', '4149', (46, 49)) ('MAX', 'Gene', (46, 49)) 90663 29264463 Additionally, the RET gene (NM_020630) had an American College of Medical Genetics and Genomics category 6 alteration, p.S836S (c.2508C>T), which is a silent mutation that conserves the RET protein sequence. ('RET', 'Gene', (186, 189)) ('NM_020630', 'Var', (28, 37)) ('p.S836S', 'Mutation', 'rs1800862', (119, 126)) ('RET', 'Gene', '5979', (18, 21)) ('p.S836S (c.2508C>T', 'Var', (119, 137)) ('RET', 'Gene', '5979', (186, 189)) ('RET', 'Gene', (18, 21)) ('c.2508C>T', 'Mutation', 'rs1800862', (128, 137)) 90664 29264463 Whereas some studies have implicated this silent RET mutation in increasing the chance of developing sporadic medullary thyroid cancer, others showed no increase in risk of thyroid cancer, pheochromocytomas, or pituitary adenomas. ('mutation', 'Var', (53, 61)) ('RET', 'Gene', '5979', (49, 52)) ('thyroid cancer', 'Disease', 'MESH:D013964', (173, 187)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (189, 205)) ('pheochromocytomas', 'Disease', (189, 206)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (189, 206)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (173, 187)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (211, 229)) ('thyroid cancer', 'Disease', (120, 134)) ('cancer', 'Phenotype', 'HP:0002664', (128, 134)) ('RET', 'Gene', (49, 52)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (211, 229)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (211, 228)) ('pituitary adenomas', 'Disease', (211, 229)) ('silent', 'Var', (42, 48)) ('thyroid cancer', 'Disease', 'MESH:D013964', (120, 134)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (189, 206)) ('cancer', 'Phenotype', 'HP:0002664', (181, 187)) ('thyroid cancer', 'Disease', (173, 187)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (110, 134)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (120, 134)) 90671 29264463 We describe a patient who presented with a prolactinoma and was found to have bilateral pheochromocytomas and a novel MAX mutation. ('mutation', 'Var', (122, 130)) ('prolactinoma', 'Disease', (43, 55)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (88, 105)) ('patient', 'Species', '9606', (14, 21)) ('MAX', 'Gene', '4149', (118, 121)) ('MAX', 'Gene', (118, 121)) ('prolactinoma', 'Disease', 'MESH:D015175', (43, 55)) ('prolactinoma', 'Phenotype', 'HP:0040278', (43, 55)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (88, 104)) ('bilateral pheochromocytomas', 'Disease', (78, 105)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (78, 105)) 90672 29264463 Although MAX mutations have been demonstrated to cause familial pheochromocytomas, to our knowledge, this is the first report of a pituitary adenoma in a patient with a MAX mutation. ('familial pheochromocytomas', 'Disease', (55, 81)) ('patient', 'Species', '9606', (154, 161)) ('pituitary adenoma', 'Disease', (131, 148)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (131, 148)) ('MAX', 'Gene', (169, 172)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (64, 81)) ('MAX', 'Gene', (9, 12)) ('familial pheochromocytomas', 'Disease', 'MESH:C531777', (55, 81)) ('MAX', 'Gene', '4149', (169, 172)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (64, 80)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (131, 148)) ('MAX', 'Gene', '4149', (9, 12)) ('cause', 'Reg', (49, 54)) ('mutations', 'Var', (13, 22)) ('mutation', 'Var', (173, 181)) 90673 29264463 Immunohistochemistry revealing loss of the MAX protein in the patient's pheochromocytoma cells suggests that this novel mutation of MAX was responsible for tumorigenesis. ('pheochromocytoma', 'Disease', (72, 88)) ('loss', 'NegReg', (31, 35)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (72, 88)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (72, 88)) ('tumor', 'Disease', 'MESH:D009369', (156, 161)) ('responsible', 'Reg', (140, 151)) ('mutation', 'Var', (120, 128)) ('patient', 'Species', '9606', (62, 69)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('MAX', 'Gene', '4149', (132, 135)) ('MAX', 'Gene', (132, 135)) ('tumor', 'Disease', (156, 161)) ('MAX', 'Gene', (43, 46)) ('MAX', 'Gene', '4149', (43, 46)) 90675 29264463 Tissue from the pituitary tumor is not available for analysis; therefore, it is impossible to directly implicate a MAX mutation as a causative event for tumor formation. ('tumor', 'Disease', 'MESH:D009369', (153, 158)) ('mutation', 'Var', (119, 127)) ('pituitary tumor', 'Disease', 'MESH:D010911', (16, 31)) ('tumor', 'Disease', 'MESH:D009369', (26, 31)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('tumor', 'Disease', (153, 158)) ('MAX', 'Gene', '4149', (115, 118)) ('MAX', 'Gene', (115, 118)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('tumor', 'Disease', (26, 31)) ('pituitary tumor', 'Disease', (16, 31)) 90676 29264463 The pituitary adenoma could be a coincidental finding in this patient with a germline MAX mutation. ('pituitary adenoma', 'Disease', 'MESH:D010911', (4, 21)) ('MAX', 'Gene', '4149', (86, 89)) ('MAX', 'Gene', (86, 89)) ('patient', 'Species', '9606', (62, 69)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (4, 21)) ('mutation', 'Var', (90, 98)) ('pituitary adenoma', 'Disease', (4, 21)) 90677 29264463 MAX has been shown to behave as a classical tumor suppressor gene, with loss of heterozygosity of the normal allele in tumors carrying pathogenic mutations. ('tumors', 'Phenotype', 'HP:0002664', (119, 125)) ('tumor', 'Disease', (119, 124)) ('MAX', 'Gene', (0, 3)) ('loss', 'NegReg', (72, 76)) ('mutations', 'Var', (146, 155)) ('tumors', 'Disease', (119, 125)) ('tumors', 'Disease', 'MESH:D009369', (119, 125)) ('MAX', 'Gene', '4149', (0, 3)) ('tumor', 'Disease', 'MESH:D009369', (44, 49)) ('tumor', 'Disease', 'MESH:D009369', (119, 124)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('tumor', 'Disease', (44, 49)) 90679 29264463 MAX mutations appear to cause pheochromocytoma by failing to control MYC signals for cellular proliferation. ('failing', 'NegReg', (50, 57)) ('MAX', 'Gene', (0, 3)) ('MYC', 'Gene', (69, 72)) ('MAX', 'Gene', '4149', (0, 3)) ('cause', 'Reg', (24, 29)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (30, 46)) ('pheochromocytoma', 'Disease', (30, 46)) ('mutations', 'Var', (4, 13)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (30, 46)) ('MYC', 'Gene', '4609', (69, 72)) 90680 29264463 Consistent with findings from other pheochromocytomas harboring MAX mutations, our patient's tumor secreted normetanephrine in a greater proportion than metanephrine. ('pheochromocytomas', 'Disease', (36, 53)) ('secreted normetanephrine', 'MPA', (99, 123)) ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('MAX', 'Gene', '4149', (64, 67)) ('metanephrine', 'Chemical', 'MESH:D008676', (111, 123)) ('tumor', 'Disease', (93, 98)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (36, 52)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (36, 53)) ('metanephrine', 'Chemical', 'MESH:D008676', (153, 165)) ('patient', 'Species', '9606', (83, 90)) ('mutations', 'Var', (68, 77)) ('normetanephrine', 'Chemical', 'MESH:D009647', (108, 123)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (36, 53)) ('MAX', 'Gene', (64, 67)) ('tumor', 'Disease', 'MESH:D009369', (93, 98)) 90681 29264463 An interesting aspect of this case was the inconsistent uptake of [123I]MIBG in the adrenal lesions. ('[123I]MIBG', 'Chemical', 'MESH:D019797', (66, 76)) ('adrenal', 'Disease', (84, 91)) ('uptake', 'MPA', (56, 62)) ('[123I', 'Var', (66, 71)) 90682 29264463 The absence of [123I]MIBG positivity could reflect the varying degrees to which pheochromocytomas, particularly dedifferentiated tumors, accumulate MIBG. ('MIBG', 'Chemical', 'MESH:D019797', (21, 25)) ('tumors', 'Disease', (129, 135)) ('tumors', 'Disease', 'MESH:D009369', (129, 135)) ('tumors', 'Phenotype', 'HP:0002664', (129, 135)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (80, 97)) ('MIBG', 'Chemical', 'MESH:D019797', (148, 152)) ('[123I]', 'Var', (15, 21)) ('MIBG', 'Gene', (21, 25)) ('pheochromocytomas', 'Disease', (80, 97)) ('[123I]MIBG', 'Chemical', 'MESH:D019797', (15, 25)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (80, 97)) ('MIBG', 'Disease', (148, 152)) ('accumulate', 'PosReg', (137, 147)) 90689 29264463 It raises the question of whether MAX mutations could cause a syndromic disease involving pituitary tumors in addition to pheochromocytomas/paragangliomas. ('pituitary tumors', 'Disease', 'MESH:D010911', (90, 106)) ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('cause', 'Reg', (54, 59)) ('MAX', 'Gene', (34, 37)) ('MAX', 'Gene', '4149', (34, 37)) ('paraganglioma', 'Phenotype', 'HP:0002668', (140, 153)) ('paragangliomas', 'Phenotype', 'HP:0002668', (140, 154)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (122, 138)) ('pheochromocytomas/paragangliomas', 'Disease', (122, 154)) ('syndromic disease', 'Disease', 'MESH:D030342', (62, 79)) ('tumors', 'Phenotype', 'HP:0002664', (100, 106)) ('syndromic disease', 'Disease', (62, 79)) ('pituitary tumors', 'Disease', (90, 106)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (122, 154)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (122, 139)) ('mutations', 'Var', (38, 47)) 90690 29264463 Because MAX mutations are rare events, observations from case reports are important to identify potentially related clinical sequelae. ('mutations', 'Var', (12, 21)) ('MAX', 'Gene', '4149', (8, 11)) ('MAX', 'Gene', (8, 11)) 90720 27279402 The major familial diseases associated with recurrent pheochromocytoma include multiple endocrine neoplasia (MEN) type 2 due to RET (rearranged during transfection) oncogene mutation; Von-Hippel-Lindau (VHL) disease due to a mutation in the VHL gene; neurofibromatosis (NF) due to NF type 1 gene mutation; and familial pheochromocytoma/paraganglioma syndrome due to a mutation in succinate dehydrogenase (SDH) types B, C and D. In patients suffering from VHL, Walther et al. ('NF', 'Gene', '4763', (270, 272)) ('pheochromocytoma', 'Disease', (54, 70)) ('NF', 'Phenotype', 'HP:0001067', (270, 272)) ('RET', 'Gene', '5979', (128, 131)) ('familial diseases', 'Disease', (10, 27)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (54, 70)) ('VHL', 'Disease', (241, 244)) ('VHL', 'Disease', (203, 206)) ('rearranged during transfection', 'Gene', (133, 163)) ('mutation', 'Var', (368, 376)) ('neoplasia', 'Phenotype', 'HP:0002664', (98, 107)) ('VHL', 'Disease', (455, 458)) ('mutation', 'Var', (225, 233)) ('rearranged during transfection', 'Gene', '5979', (133, 163)) ('RET', 'Gene', (128, 131)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (310, 335)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (251, 268)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (79, 107)) ('MEN', 'Species', '9606', (109, 112)) ('patients', 'Species', '9606', (431, 439)) ('familial diseases', 'Disease', 'MESH:D030342', (10, 27)) ('SDH', 'Gene', (405, 408)) ('VHL', 'Disease', 'MESH:D006623', (241, 244)) ('VHL', 'Disease', 'MESH:D006623', (203, 206)) ('paraganglioma syndrome', 'Disease', (336, 358)) ('multiple endocrine neoplasia', 'Disease', (79, 107)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (88, 107)) ('VHL', 'Disease', 'MESH:D006623', (455, 458)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (319, 335)) ('neurofibromatosis', 'Disease', 'MESH:C537392', (251, 268)) ('paraganglioma', 'Phenotype', 'HP:0002668', (336, 349)) ('familial pheochromocytoma', 'Disease', (310, 335)) ('NF', 'Gene', '4763', (281, 283)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (54, 70)) ('NF', 'Phenotype', 'HP:0001067', (281, 283)) ('pheochromocytoma', 'Disease', (319, 335)) ('due to', 'Reg', (359, 365)) ('neurofibromatosis', 'Disease', (251, 268)) ('Von-Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (184, 215)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (336, 358)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (319, 335)) 90934 23587063 In addition, staining for S-100 protein identifed Schwann cells and sustentacular cells. ('Schwann cells', 'CPA', (50, 63)) ('S-100', 'Gene', '6271', (26, 31)) ('staining', 'Var', (13, 21)) ('S-100', 'Gene', (26, 31)) 91109 33329393 About 40% of PPGLs result from germline mutations and therefore they are highly inheritable. ('result from', 'Reg', (19, 30)) ('PPGLs', 'Chemical', '-', (13, 18)) ('PGLs', 'Phenotype', 'HP:0002668', (14, 18)) ('PPGLs', 'Gene', (13, 18)) ('germline mutations', 'Var', (31, 49)) 91110 33329393 Although dysfunction of any one of a panel of more than 20 genes can lead to PPGLs, mutations in genes involved in the VHL/HIF axis including PHD, VHL, HIF-2A (EPAS1), and SDHx are more frequently found in PPGLs. ('VHL', 'Gene', '7428', (119, 122)) ('lead to', 'Reg', (69, 76)) ('EPAS1', 'Gene', '2034', (160, 165)) ('HIF axis', 'Disease', 'MESH:C566610', (123, 131)) ('PGLs', 'Phenotype', 'HP:0002668', (78, 82)) ('HIF-2A', 'Gene', (152, 158)) ('VHL', 'Gene', (147, 150)) ('PPGLs', 'Disease', (77, 82)) ('SDH', 'Gene', '6390', (172, 175)) ('mutations', 'Var', (84, 93)) ('PPGLs', 'Chemical', '-', (206, 211)) ('PHD', 'Disease', (142, 145)) ('dysfunction', 'Var', (9, 20)) ('VHL', 'Gene', '7428', (147, 150)) ('PPGLs', 'Chemical', '-', (77, 82)) ('EPAS1', 'Gene', (160, 165)) ('HIF-2A', 'Gene', '2034', (152, 158)) ('VHL', 'Gene', (119, 122)) ('found', 'Reg', (197, 202)) ('HIF axis', 'Disease', (123, 131)) ('SDH', 'Gene', (172, 175)) ('PHD', 'Disease', 'MESH:D011547', (142, 145)) ('PGLs', 'Phenotype', 'HP:0002668', (207, 211)) 91124 33329393 Approximately, 40% of PPGLs result from germline mutations, and therefore they are highly inheritable. ('PGLs', 'Phenotype', 'HP:0002668', (23, 27)) ('germline mutations', 'Var', (40, 58)) ('PPGLs', 'Chemical', '-', (22, 27)) ('PPGLs', 'Gene', (22, 27)) ('result from', 'Reg', (28, 39)) 91125 33329393 Although dysfunction of any of these related susceptible gene products can lead to PPGLs, mutations in the genes encoding the VHL/HIF axis such as VHL, HIF, and PHD are more commonly found in PPGLs. ('mutations', 'Var', (90, 99)) ('HIF', 'Gene', '405', (130, 133)) ('HIF axis', 'Disease', (130, 138)) ('VHL', 'Gene', (126, 129)) ('HIF', 'Gene', '405', (152, 155)) ('PHD', 'Disease', (161, 164)) ('PPGLs', 'Chemical', '-', (192, 197)) ('VHL', 'Gene', (147, 150)) ('VHL', 'Gene', '7428', (126, 129)) ('HIF axis', 'Disease', 'MESH:C566610', (130, 138)) ('PHD', 'Disease', 'MESH:D011547', (161, 164)) ('found', 'Reg', (183, 188)) ('PPGLs', 'Disease', (83, 88)) ('lead', 'Reg', (75, 79)) ('PGLs', 'Phenotype', 'HP:0002668', (84, 88)) ('dysfunction', 'Var', (9, 20)) ('VHL', 'Gene', '7428', (147, 150)) ('PGLs', 'Phenotype', 'HP:0002668', (193, 197)) ('HIF', 'Gene', (130, 133)) ('PPGLs', 'Chemical', '-', (83, 88)) ('HIF', 'Gene', (152, 155)) 91127 33329393 In this review, we will discuss the genetic alterations affecting the VHL/HIF axis and dissect the underlying molecular mechanisms in pseudohypoxia signaling and PPGLs. ('VHL', 'Gene', (70, 73)) ('PGLs', 'Phenotype', 'HP:0002668', (163, 167)) ('VHL', 'Gene', '7428', (70, 73)) ('HIF axis', 'Disease', (74, 82)) ('hypoxia', 'Disease', (140, 147)) ('genetic alterations', 'Var', (36, 55)) ('hypoxia', 'Disease', 'MESH:D000860', (140, 147)) ('alterations', 'Var', (44, 55)) ('PPGLs', 'Chemical', '-', (162, 167)) ('HIF axis', 'Disease', 'MESH:C566610', (74, 82)) 91135 33329393 The asparagine residue (N803) in the C-TAD of HIF-alpha can be hydroxylated by factor-inhibiting HIF (FIH) to interrupt its interaction with CREB-binding protein (CBP)/p300, an essential coactivator of HIF. ('p300', 'Gene', '2033', (168, 172)) ('p300', 'Gene', (168, 172)) ('interaction', 'Interaction', (124, 135)) ('HIF', 'Gene', (202, 205)) ('CBP', 'Gene', (163, 166)) ('CREB-binding protein', 'Gene', (141, 161)) ('N803', 'Var', (24, 28)) ('HIF', 'Gene', '405', (202, 205)) ('CBP', 'Gene', '1387', (163, 166)) ('CREB-binding protein', 'Gene', '1387', (141, 161)) ('HIF', 'Gene', (97, 100)) ('HIF', 'Gene', '405', (97, 100)) ('N803', 'Chemical', '-', (24, 28)) ('HIF', 'Gene', (46, 49)) ('interrupt', 'NegReg', (110, 119)) ('HIF', 'Gene', '405', (46, 49)) ('asparagine', 'Chemical', 'MESH:D001216', (4, 14)) 91136 33329393 The N-TAD also contains an oxygen-dependent domain (ODDD), in which a few prolyl residues (Pro-402 and Pro-564 in HIF-1alpha; Pro-405 and Pro-531 in HIF-2alpha) are selectively hydroxylated under normoxic condition and hydroxylated HIFs are subsequently degraded. ('Pro-405', 'Var', (126, 133)) ('HIF-2alpha', 'Gene', (149, 159)) ('Pro', 'Chemical', 'MESH:D011392', (91, 94)) ('Pro', 'Chemical', 'MESH:D011392', (103, 106)) ('oxygen', 'Chemical', 'MESH:D010100', (27, 33)) ('HIF-1alpha', 'Gene', (114, 124)) ('Pro-531', 'Var', (138, 145)) ('hydroxylated HIFs', 'Disease', 'MESH:C565044', (219, 236)) ('Pro', 'Chemical', 'MESH:D011392', (126, 129)) ('HIF-2alpha', 'Gene', '2034', (149, 159)) ('Pro-531', 'Chemical', '-', (138, 145)) ('hydroxylated HIFs', 'Disease', (219, 236)) ('Pro-564', 'Var', (103, 110)) ('Pro-402', 'Var', (91, 98)) ('HIF-1alpha', 'Gene', '3091', (114, 124)) ('Pro', 'Chemical', 'MESH:D011392', (138, 141)) 91150 33329393 However, failure in the degradation of HIFs due to either deletion or mutation of either VHL, HIFs, or PHDs can lead to dysregulation of HIFs-regulated genes in a variety of diseases including PPGLs ( Figure 2 ). ('PGLs', 'Phenotype', 'HP:0002668', (194, 198)) ('HIFs', 'Disease', (39, 43)) ('PPGLs', 'Disease', (193, 198)) ('PHDs', 'Disease', 'None', (103, 107)) ('HIFs', 'Disease', 'None', (39, 43)) ('PPGLs', 'Chemical', '-', (193, 198)) ('PHDs', 'Disease', (103, 107)) ('failure', 'NegReg', (9, 16)) ('VHL', 'Gene', (89, 92)) ('lead to', 'Reg', (112, 119)) ('HIFs', 'Disease', 'None', (137, 141)) ('HIFs', 'Disease', (94, 98)) ('dysregulation', 'MPA', (120, 133)) ('VHL', 'Gene', '7428', (89, 92)) ('deletion', 'Var', (58, 66)) ('HIFs', 'Disease', (137, 141)) ('mutation', 'Var', (70, 78)) ('HIFs', 'Disease', 'None', (94, 98)) 91151 33329393 As mentioned above that mutation in either the three genes encoding pVHL, HIFs and PHDs can lead to abnormal accumulation of HIFs. ('lead', 'Reg', (92, 96)) ('PHDs', 'Disease', (83, 87)) ('HIFs', 'Disease', (125, 129)) ('HIFs', 'Disease', 'None', (74, 78)) ('HIFs', 'Disease', (74, 78)) ('mutation', 'Var', (24, 32)) ('pVHL', 'Gene', '7428', (68, 72)) ('PHDs', 'Disease', 'None', (83, 87)) ('accumulation', 'PosReg', (109, 121)) ('pVHL', 'Gene', (68, 72)) ('HIFs', 'Disease', 'None', (125, 129)) 91152 33329393 Minor alteration of this axis usually causes erythrocytosis; whereas major dysregulation of the axis is associated with tumorigenesis. ('Minor alteration', 'Var', (0, 16)) ('erythrocytosis', 'Disease', 'MESH:D011086', (45, 59)) ('causes', 'Reg', (38, 44)) ('erythrocytosis', 'Disease', (45, 59)) ('associated', 'Reg', (104, 114)) ('tumor', 'Disease', 'MESH:D009369', (120, 125)) ('tumor', 'Phenotype', 'HP:0002664', (120, 125)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (45, 59)) ('tumor', 'Disease', (120, 125)) 91153 33329393 Although a wide spectrum of tumors including hemangioblastomas, renal cell carcinoma (RCC), pancreatic neuroendocrine tumor, and PPGLs can result from dysregulation of the VHL/HIF axis, this review will only focus on the relationship between aberrations of these genes and PPGLs. ('PPGLs', 'Chemical', '-', (129, 134)) ('result from', 'Reg', (139, 150)) ('PPGLs', 'Chemical', '-', (273, 278)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (64, 84)) ('VHL', 'Gene', (172, 175)) ('HIF axis', 'Disease', (176, 184)) ('tumors', 'Phenotype', 'HP:0002664', (28, 34)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('pancreatic neuroendocrine tumor', 'Disease', 'MESH:D018358', (92, 123)) ('hemangioblastomas', 'Disease', 'MESH:D018325', (45, 62)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) ('VHL', 'Gene', '7428', (172, 175)) ('PGLs', 'Phenotype', 'HP:0002668', (274, 278)) ('tumors', 'Disease', (28, 34)) ('renal cell carcinoma', 'Disease', (64, 84)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (64, 84)) ('pancreatic neuroendocrine tumor', 'Disease', (92, 123)) ('HIF axis', 'Disease', 'MESH:C566610', (176, 184)) ('RCC', 'Disease', (86, 89)) ('RCC', 'Phenotype', 'HP:0005584', (86, 89)) ('pancreatic neuroendocrine tumor', 'Phenotype', 'HP:0030405', (92, 123)) ('PGLs', 'Phenotype', 'HP:0002668', (130, 134)) ('tumors', 'Disease', 'MESH:D009369', (28, 34)) ('PPGLs', 'Gene', (129, 134)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (103, 123)) ('dysregulation', 'Var', (151, 164)) ('carcinoma', 'Phenotype', 'HP:0030731', (75, 84)) ('RCC', 'Disease', 'MESH:C538614', (86, 89)) ('hemangioblastomas', 'Disease', (45, 62)) 91154 33329393 After the VHL mutations were first described in an ophthalmic disease, multiple studies subsequently confirmed that VHL mutations can cause a variety of diseases including cancers. ('cancer', 'Phenotype', 'HP:0002664', (172, 178)) ('cause', 'Reg', (134, 139)) ('diseases', 'Disease', (153, 161)) ('ophthalmic disease', 'Disease', (51, 69)) ('VHL', 'Gene', (116, 119)) ('ophthalmic disease', 'Disease', 'MESH:C535922', (51, 69)) ('cancers', 'Disease', 'MESH:D009369', (172, 179)) ('cancers', 'Phenotype', 'HP:0002664', (172, 179)) ('VHL', 'Gene', (10, 13)) ('mutations', 'Var', (120, 129)) ('cancers', 'Disease', (172, 179)) ('VHL', 'Gene', '7428', (116, 119)) ('VHL', 'Gene', '7428', (10, 13)) 91159 33329393 To date, more than 1,000 mutations in VHL gene have been identified. ('mutations', 'Var', (25, 34)) ('VHL', 'Gene', '7428', (38, 41)) ('VHL', 'Gene', (38, 41)) 91160 33329393 The common germline mutations in VHL are delPhe76, Asn78Ser, Argl61Stop, Arg167Gln, Argl67Trp, and Leu178Pro ( Figure 1 ). ('Asn78Ser', 'Var', (51, 59)) ('delPhe76', 'Chemical', '-', (41, 49)) ('Asn78Ser', 'SUBSTITUTION', 'None', (51, 59)) ('Arg167Gln', 'SUBSTITUTION', 'None', (73, 82)) ('VHL', 'Gene', (33, 36)) ('Argl67Trp', 'Chemical', '-', (84, 93)) ('VHL', 'Gene', '7428', (33, 36)) ('Leu178Pro', 'Var', (99, 108)) ('Argl67Trp', 'Var', (84, 93)) ('Argl61Stop', 'Var', (61, 71)) ('delPhe76', 'Var', (41, 49)) ('Arg167Gln', 'Var', (73, 82)) ('Leu178Pro', 'SUBSTITUTION', 'None', (99, 108)) 91161 33329393 Recently, we reported four missense mutations in five Chinese unrelated families c.239G>T (p.Ser80Ile), c.232A>T (p.Asn78Tyr), c.500G>A (p.Arg167Gln), c.293A>G (p.Try98Cys), and all four mutations predispose the patients to VHL disease. ('c.293A>G', 'Mutation', 'rs864321643', (151, 159)) ('p.Ser80Ile', 'Mutation', 'rs5030805', (91, 101)) ('c.293A>G', 'Var', (151, 159)) ('VHL disease', 'Disease', (224, 235)) ('c.500G>A', 'Mutation', 'rs5030821', (127, 135)) ('c.239G>T', 'Mutation', 'rs5030805', (81, 89)) ('p.Asn78Tyr', 'Mutation', 'rs869025621', (114, 124)) ('p.Try98Cys', 'Mutation', 'rs864321643', (161, 171)) ('patients', 'Species', '9606', (212, 220)) ('predispose', 'Reg', (197, 207)) ('c.232A>T', 'Mutation', 'rs869025621', (104, 112)) ('VHL disease', 'Disease', 'MESH:D006623', (224, 235)) ('c.500G>A', 'Var', (127, 135)) ('c.239G>T', 'Var', (81, 89)) ('p.Arg167Gln', 'SUBSTITUTION', 'None', (137, 148)) ('c.232A>T', 'Var', (104, 112)) ('p.Arg167Gln', 'Var', (137, 148)) 91162 33329393 Notably, type 2 VHL disease mainly resulted from missense mutations (85%-92%), especially mutations in codons 167 and 238, are mainly associated with PPGLs. ('associated', 'Reg', (134, 144)) ('mutations in codons 167', 'Var', (90, 113)) ('VHL disease', 'Disease', 'MESH:D006623', (16, 27)) ('PGLs', 'Phenotype', 'HP:0002668', (151, 155)) ('PPGLs', 'Chemical', '-', (150, 155)) ('VHL disease', 'Disease', (16, 27)) ('missense mutations', 'Var', (49, 67)) ('resulted', 'Reg', (35, 43)) ('PPGLs', 'Disease', (150, 155)) 91163 33329393 In contrast, homozygous germline mutations are rare or barely cause tumors. ('tumors', 'Disease', (68, 74)) ('tumors', 'Disease', 'MESH:D009369', (68, 74)) ('tumors', 'Phenotype', 'HP:0002664', (68, 74)) ('germline mutations', 'Var', (24, 42)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) 91164 33329393 found a c.598C>T (p.Arg200Trp) homozygous missense germline mutation of VHL caused Chuvash polycythemia. ('Chuvash polycythemia', 'Disease', 'MESH:C563918', (83, 103)) ('VHL', 'Gene', '7428', (72, 75)) ('c.598C>T', 'Var', (8, 16)) ('polycythemia', 'Phenotype', 'HP:0001901', (91, 103)) ('missense', 'Var', (42, 50)) ('caused', 'Reg', (76, 82)) ('c.598C>T', 'Mutation', 'rs28940298', (8, 16)) ('p.Arg200Trp', 'Mutation', 'rs28940298', (18, 29)) ('Chuvash polycythemia', 'Disease', (83, 103)) ('VHL', 'Gene', (72, 75)) 91165 33329393 In addition, somatic VHL mutations were found in majority (50%-70%) of clear-cell RCC cases. ('mutations', 'Var', (25, 34)) ('found', 'Reg', (40, 45)) ('RCC', 'Disease', 'MESH:C538614', (82, 85)) ('RCC', 'Disease', (82, 85)) ('RCC', 'Phenotype', 'HP:0005584', (82, 85)) ('VHL', 'Gene', (21, 24)) ('VHL', 'Gene', '7428', (21, 24)) 91166 33329393 It has been reported that different mutations in VHL lead to diverse clinical symptoms, and sometimes even the same mutation can lead to different phenotypes. ('lead', 'Reg', (129, 133)) ('lead to', 'Reg', (53, 60)) ('mutations', 'Var', (36, 45)) ('VHL', 'Gene', (49, 52)) ('VHL', 'Gene', '7428', (49, 52)) 91167 33329393 Since pVHL has multiple functional domains, one of the potential explanations for this phenomenon is that a specific mutation causes particular dysfunction. ('causes', 'Reg', (126, 132)) ('pVHL', 'Gene', '7428', (6, 10)) ('mutation', 'Var', (117, 125)) ('pVHL', 'Gene', (6, 10)) 91168 33329393 It appears that missense mutations are more likely linked with type 2 disease and truncating mutations are responsible for type 1 disease. ('missense mutations', 'Var', (16, 34)) ('linked', 'Reg', (51, 57)) ('truncating', 'MPA', (82, 92)) ('type 2 disease', 'Disease', 'MESH:C536595', (63, 77)) ('type 2 disease', 'Disease', (63, 77)) 91169 33329393 further stratified the missense mutations as HIF-alpha binding site missense mutations (HM) group and non-HIF-alpha binding site missense mutations (nHM) group, and found that the missense mutations in HM group had similar risks of most tumors with truncating mutations with the exception that the HM group had a lower risk of RCC. ('RCC', 'Disease', (327, 330)) ('RCC', 'Phenotype', 'HP:0005584', (327, 330)) ('HIF', 'Gene', (106, 109)) ('tumors', 'Disease', (237, 243)) ('tumors', 'Disease', 'MESH:D009369', (237, 243)) ('RCC', 'Disease', 'MESH:C538614', (327, 330)) ('HIF', 'Gene', '405', (106, 109)) ('tumors', 'Phenotype', 'HP:0002664', (237, 243)) ('HIF', 'Gene', (45, 48)) ('HIF', 'Gene', '405', (45, 48)) ('missense mutations', 'Var', (180, 198)) ('truncating mutations', 'MPA', (249, 269)) ('tumor', 'Phenotype', 'HP:0002664', (237, 242)) 91170 33329393 Moreover, compared to nHM, missense mutations in HM had a higher risk of pancreatic cyst or tumor and a lower risk of PCCs. ('pancreatic cyst or tumor', 'Disease', 'MESH:D010190', (73, 97)) ('PCC', 'Gene', '1421', (118, 121)) ('pancreatic cyst or tumor', 'Disease', (73, 97)) ('missense mutations', 'Var', (27, 45)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('pancreatic cyst', 'Phenotype', 'HP:0001737', (73, 88)) ('PCCs', 'Phenotype', 'HP:0002666', (118, 122)) ('PCC', 'Gene', (118, 121)) 91173 33329393 reported that mutations associated with type 2C phenotype could even promote, rather than inhibit, HIF-alpha ubiquitylation and degradation. ('HIF', 'Gene', '405', (99, 102)) ('degradation', 'MPA', (128, 139)) ('promote', 'PosReg', (69, 76)) ('mutations', 'Var', (14, 23)) ('HIF', 'Gene', (99, 102)) 91174 33329393 These findings altogether supported the notion that disturbing the functions of pVHL contributes to the development of PPGLs. ('PPGLs', 'Disease', (119, 124)) ('disturbing', 'Var', (52, 62)) ('pVHL', 'Gene', '7428', (80, 84)) ('PPGLs', 'Chemical', '-', (119, 124)) ('PGLs', 'Phenotype', 'HP:0002668', (120, 124)) ('pVHL', 'Gene', (80, 84)) ('functions', 'MPA', (67, 76)) 91176 33329393 The VHL/HIF axis also can be affected by dysregulated epigenetic modifications such as gene silencing by methylation of the CpG islands in the promoter of related genes. ('HIF axis', 'Disease', (8, 16)) ('affected', 'Reg', (29, 37)) ('methylation', 'Var', (105, 116)) ('silencing', 'NegReg', (92, 101)) ('gene', 'Disease', (87, 91)) ('HIF axis', 'Disease', 'MESH:C566610', (8, 16)) ('VHL', 'Gene', (4, 7)) ('VHL', 'Gene', '7428', (4, 7)) 91183 33329393 reported a somatic mutation (p.Val116Glu) and a germline missense mutation (p.Ala475Ser) of HIF-1A in a clear-cell RCC with VHL inactivation. ('p.Ala475Ser', 'Mutation', 'rs138451482', (76, 87)) ('VHL', 'Gene', '7428', (124, 127)) ('RCC', 'Phenotype', 'HP:0005584', (115, 118)) ('RCC', 'Disease', 'MESH:C538614', (115, 118)) ('RCC', 'Disease', (115, 118)) ('p.Ala475Ser', 'Var', (76, 87)) ('HIF-1A', 'Gene', '3091', (92, 98)) ('p.Val116Glu', 'Var', (29, 40)) ('HIF-1A', 'Gene', (92, 98)) ('VHL', 'Gene', (124, 127)) ('p.Val116Glu', 'Mutation', 'p.V116E', (29, 40)) 91185 33329393 found that HIF-1A Single-Nucleotide Polymorphisms (SNPs) are association with the phenotypes of many tumors. ('Single-Nucleotide Polymorphisms', 'Var', (18, 49)) ('HIF-1A', 'Gene', (11, 17)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) ('association', 'Reg', (61, 72)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('tumors', 'Disease', (101, 107)) ('HIF-1A', 'Gene', '3091', (11, 17)) 91187 33329393 On the other hand, both germline and somatic mutation in HIF-2A have been identified in patients with polycythemia and/or PPGLs. ('PGLs', 'Phenotype', 'HP:0002668', (123, 127)) ('HIF-2A', 'Gene', (57, 63)) ('HIF-2A', 'Gene', '2034', (57, 63)) ('polycythemia', 'Disease', (102, 114)) ('patients', 'Species', '9606', (88, 96)) ('PPGLs', 'Chemical', '-', (122, 127)) ('germline', 'Var', (24, 32)) ('polycythemia', 'Phenotype', 'HP:0001901', (102, 114)) ('polycythemia', 'Disease', 'MESH:D011086', (102, 114)) ('identified', 'Reg', (74, 84)) ('somatic mutation', 'Var', (37, 53)) 91188 33329393 However, it appears that germline mutations of HIF-2A including p.Met535Val, p.Gly537Arg, p.Gly537Trp only leads to polycythemias, not tumors. ('polycythemias', 'Disease', 'MESH:D011086', (116, 129)) ('p.Met535Val', 'Mutation', 'rs137853037', (64, 75)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('p.Gly537Trp', 'Mutation', 'rs137853036', (90, 101)) ('HIF-2A', 'Gene', '2034', (47, 53)) ('p.Met535Val', 'Var', (64, 75)) ('p.Gly537Arg', 'Mutation', 'rs137853036', (77, 88)) ('polycythemia', 'Phenotype', 'HP:0001901', (116, 128)) ('leads to', 'Reg', (107, 115)) ('HIF-2A', 'Gene', (47, 53)) ('tumors', 'Disease', (135, 141)) ('polycythemias', 'Disease', (116, 129)) ('tumors', 'Disease', 'MESH:D009369', (135, 141)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('p.Gly537Arg', 'Var', (77, 88)) ('p.Gly537Trp', 'Var', (90, 101)) 91189 33329393 A gain-of-function germline mutation in HIF-2A alone is not sufficient for tumorigenesis presumably that simultaneous loss-of-function in some tumor suppressors is needed. ('gain-of-function', 'PosReg', (2, 18)) ('tumor', 'Disease', (143, 148)) ('germline mutation', 'Var', (19, 36)) ('HIF-2A', 'Gene', (40, 46)) ('HIF-2A', 'Gene', '2034', (40, 46)) ('tumor', 'Disease', 'MESH:D009369', (75, 80)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('tumor', 'Disease', 'MESH:D009369', (143, 148)) ('tumor', 'Disease', (75, 80)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) 91190 33329393 In fact, we recently reported that germline mutations in HIF-2A (c.1609G>A, p.Gly537Arg) are responsible for polycythemia formation and additional somatic VHL mutations are needed for the development of clear-cell RCC. ('polycythemia', 'Disease', (109, 121)) ('responsible', 'Reg', (93, 104)) ('VHL', 'Gene', '7428', (155, 158)) ('HIF-2A', 'Gene', (57, 63)) ('HIF-2A', 'Gene', '2034', (57, 63)) ('polycythemia', 'Phenotype', 'HP:0001901', (109, 121)) ('polycythemia', 'Disease', 'MESH:D011086', (109, 121)) ('p.Gly537Arg', 'Var', (76, 87)) ('RCC', 'Disease', (214, 217)) ('RCC', 'Phenotype', 'HP:0005584', (214, 217)) ('RCC', 'Disease', 'MESH:C538614', (214, 217)) ('c.1609G>A', 'Mutation', 'rs137853036', (65, 74)) ('c.1609G>A', 'Var', (65, 74)) ('VHL', 'Gene', (155, 158)) ('p.Gly537Arg', 'Mutation', 'rs137853036', (76, 87)) 91191 33329393 Similarly, a germline mutation in HIF-2A exon 9 (c.1121T>A, p.F374Y) leads to polycythemia and predisposes the patients for PPGLs development. ('c.1121T>A', 'Mutation', 'rs150797491', (49, 58)) ('p.F374Y', 'Var', (60, 67)) ('polycythemia', 'Disease', (78, 90)) ('polycythemia', 'Phenotype', 'HP:0001901', (78, 90)) ('PPGLs', 'Disease', (124, 129)) ('p.F374Y', 'Mutation', 'rs150797491', (60, 67)) ('leads to', 'Reg', (69, 77)) ('predisposes', 'Reg', (95, 106)) ('polycythemia', 'Disease', 'MESH:D011086', (78, 90)) ('HIF-2A', 'Gene', (34, 40)) ('HIF-2A', 'Gene', '2034', (34, 40)) ('PGLs', 'Phenotype', 'HP:0002668', (125, 129)) ('c.1121T>A', 'Var', (49, 58)) ('PPGLs', 'Chemical', '-', (124, 129)) ('patients', 'Species', '9606', (111, 119)) 91193 33329393 reported two gain-of-function somatic mutations (c.1588G>A, p.Ala530Thr and c.1589C>T, p.Ala530Val) in exon 12 of HIF-2A resulting in paraganglioma and polycythemia, respectively. ('polycythemia', 'Phenotype', 'HP:0001901', (152, 164)) ('HIF-2A', 'Gene', (114, 120)) ('HIF-2A', 'Gene', '2034', (114, 120)) ('p.Ala530Val', 'Mutation', 'p.A530V', (87, 98)) ('c.1588G>A', 'Var', (49, 58)) ('c.1589C>T', 'Var', (76, 85)) ('c.1589C>T', 'Mutation', 'c.1589C>T', (76, 85)) ('paraganglioma', 'Phenotype', 'HP:0002668', (134, 147)) ('gain-of-function', 'PosReg', (13, 29)) ('p.Ala530Thr', 'Mutation', 'p.A530T', (60, 71)) ('paraganglioma and polycythemia', 'Disease', 'MESH:D011086', (134, 164)) ('c.1588G>A', 'Mutation', 'c.1588G>A', (49, 58)) 91194 33329393 Further analyses suggest that mutations in the vicinity of the hydroxylation site Pro-531 affect the catalytic activity of PHD and then lead to the interrupted interaction between HIF-2alpha and pVHL. ('interrupted', 'MPA', (148, 159)) ('affect', 'Reg', (90, 96)) ('catalytic activity', 'MPA', (101, 119)) ('HIF-2alpha', 'Gene', (180, 190)) ('PHD', 'Disease', (123, 126)) ('pVHL', 'Gene', (195, 199)) ('pVHL', 'Gene', '7428', (195, 199)) ('PHD', 'Disease', 'MESH:D011547', (123, 126)) ('Pro-531', 'Chemical', '-', (82, 89)) ('lead to', 'Reg', (136, 143)) ('HIF-2alpha', 'Gene', '2034', (180, 190)) ('mutations', 'Var', (30, 39)) ('interaction', 'Interaction', (160, 171)) 91195 33329393 reported two somatic mutations of HIF-2A (c.1595A>G p.Y532C and c.1586T>C p.L529P) in patients with either congenital polycythemia, multiple recurrent PPGLs, or somatostatinoma. ('c.1595A>G', 'Mutation', 'c.1595A>G', (42, 51)) ('congenital polycythemia', 'Disease', (107, 130)) ('p.L529P', 'Mutation', 'p.L529P', (74, 81)) ('polycythemia', 'Phenotype', 'HP:0001901', (118, 130)) ('somatostatinoma', 'Disease', 'MESH:D013005', (161, 176)) ('c.1586T>C', 'Mutation', 'c.1586T>C', (64, 73)) ('c.1586T>C p.L529P', 'Var', (64, 81)) ('c.1595A>G p.Y532C', 'Var', (42, 59)) ('HIF-2A', 'Gene', (34, 40)) ('HIF-2A', 'Gene', '2034', (34, 40)) ('p.Y532C', 'Var', (52, 59)) ('PPGLs', 'Chemical', '-', (151, 156)) ('p.Y532C', 'Mutation', 'p.Y532C', (52, 59)) ('somatostatinoma', 'Disease', (161, 176)) ('PGLs', 'Phenotype', 'HP:0002668', (152, 156)) ('congenital polycythemia', 'Disease', 'MESH:D011086', (107, 130)) ('patients', 'Species', '9606', (86, 94)) 91196 33329393 We recently found that a gain-of-function mutation of HIF-2A (c.1589C>T) leads to PPGLs with polycythemia simultaneously and a mutation in HIF-2A immediately distal to its DNA binding domain (p.Ser71Tyr) has been identified in sporadic PPGLs ( Figure 1 ). ('polycythemia', 'Disease', 'MESH:D011086', (93, 105)) ('c.1589C>T', 'Mutation', 'c.1589C>T', (62, 71)) ('HIF-2A', 'Gene', (139, 145)) ('HIF-2A', 'Gene', '2034', (139, 145)) ('PPGLs', 'Chemical', '-', (236, 241)) ('PPGLs', 'Chemical', '-', (82, 87)) ('c.1589C>T', 'Var', (62, 71)) ('HIF-2A', 'Gene', (54, 60)) ('gain-of-function', 'PosReg', (25, 41)) ('HIF-2A', 'Gene', '2034', (54, 60)) ('p.Ser71Tyr', 'Mutation', 'p.S71Y', (192, 202)) ('polycythemia', 'Disease', (93, 105)) ('PGLs', 'Phenotype', 'HP:0002668', (83, 87)) ('PGLs', 'Phenotype', 'HP:0002668', (237, 241)) ('PPGLs', 'Disease', (82, 87)) ('PPGLs', 'Disease', (236, 241)) ('polycythemia', 'Phenotype', 'HP:0001901', (93, 105)) 91198 33329393 reported two cases of HIF-2A-related Polycythemia-Paraganglioma Syndrome resulted from mosaicism mutations. ('resulted from', 'Reg', (73, 86)) ('mosaicism mutations', 'Var', (87, 106)) ('HIF-2A', 'Gene', (22, 28)) ('HIF-2A', 'Gene', '2034', (22, 28)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (50, 63)) ('Polycythemia-Paraganglioma Syndrome', 'Disease', (37, 72)) ('Polycythemia-Paraganglioma Syndrome', 'Disease', 'MESH:D011086', (37, 72)) ('Polycythemia', 'Phenotype', 'HP:0001901', (37, 49)) 91199 33329393 They found that these patients could present with young age and multiplicity; and also the mutations could be transmitted to the offspring. ('transmitted', 'Reg', (110, 121)) ('mutations', 'Var', (91, 100)) ('patients', 'Species', '9606', (22, 30)) 91200 33329393 In addition, HIF-2A mosaic mutation might be involved in high secretion of catecholamines and cyanotic congenital heart disease. ('cyanotic congenital heart disease', 'Disease', (94, 127)) ('catecholamines', 'Chemical', 'MESH:D002395', (75, 89)) ('cyanotic congenital heart disease', 'Disease', 'MESH:D006331', (94, 127)) ('congenital heart disease', 'Phenotype', 'HP:0001627', (103, 127)) ('involved', 'Reg', (45, 53)) ('mosaic mutation', 'Var', (20, 35)) ('high secretion of catecholamines', 'MPA', (57, 89)) ('HIF-2A', 'Gene', (13, 19)) ('HIF-2A', 'Gene', '2034', (13, 19)) 91201 33329393 Heterozygous germline mutations in PHD2 gene were first reported in familial erythrocytosis. ('PHD2', 'Gene', (35, 39)) ('reported', 'Reg', (56, 64)) ('familial erythrocytosis', 'Disease', (68, 91)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (77, 91)) ('germline mutations', 'Var', (13, 31)) ('familial erythrocytosis', 'Disease', 'MESH:C536842', (68, 91)) ('PHD2', 'Gene', '54583', (35, 39)) 91202 33329393 reported a heterozygous loss-of-function mutation of PHD2 (c.1121A>G, p.His374Arg) with the development of both erythrocytosis and recurrent paraganglioma. ('paraganglioma', 'Disease', 'MESH:D010235', (141, 154)) ('loss-of-function', 'NegReg', (24, 40)) ('PHD2', 'Gene', (53, 57)) ('c.1121A>G', 'Mutation', 'rs119476045', (59, 68)) ('PHD2', 'Gene', '54583', (53, 57)) ('c.1121A>G', 'Var', (59, 68)) ('p.His374Arg', 'Var', (70, 81)) ('p.His374Arg', 'Mutation', 'rs119476045', (70, 81)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (112, 126)) ('paraganglioma', 'Phenotype', 'HP:0002668', (141, 154)) ('erythrocytosis', 'Disease', 'MESH:D011086', (112, 126)) ('erythrocytosis', 'Disease', (112, 126)) ('paraganglioma', 'Disease', (141, 154)) 91203 33329393 Functional analysis indicates that His374 is important in the binding of cofactor Fe2+, and mutation of this residue is expected to impair the catalytic function of PHDs. ('His374', 'Var', (35, 41)) ('PHDs', 'Disease', (165, 169)) ('mutation', 'Var', (92, 100)) ('His374', 'Chemical', '-', (35, 41)) ('binding', 'Interaction', (62, 69)) ('PHDs', 'Disease', 'None', (165, 169)) ('impair', 'NegReg', (132, 138)) ('Fe2+', 'Chemical', '-', (82, 86)) ('catalytic function', 'MPA', (143, 161)) 91204 33329393 reported heterozygous germline mutations in PHD1 (c.188T>A, p.Ser61Arg and c.682G>T, p.Ala228Ser) in patients with polycythemia and PPGLs, respectively. ('PHD1', 'Gene', '112398', (44, 48)) ('p.Ser61Arg', 'Mutation', 'p.S61R', (60, 70)) ('patients', 'Species', '9606', (101, 109)) ('c.682G>T', 'Var', (75, 83)) ('c.682G>T', 'Mutation', 'c.682G>T', (75, 83)) ('polycythemia', 'Disease', 'MESH:D011086', (115, 127)) ('p.Ala228Ser', 'Mutation', 'p.A228S', (85, 96)) ('PGLs', 'Phenotype', 'HP:0002668', (133, 137)) ('PHD1', 'Gene', (44, 48)) ('polycythemia', 'Phenotype', 'HP:0001901', (115, 127)) ('c.188T>A', 'Var', (50, 58)) ('p.Ser61Arg', 'Var', (60, 70)) ('polycythemia', 'Disease', (115, 127)) ('PPGLs', 'Chemical', '-', (132, 137)) ('c.188T>A', 'Mutation', 'c.188T>A', (50, 58)) 91205 33329393 Further research found that the half-lives of both PHD1 and PHD2 are reduced with these PHD1 mutants. ('PHD1', 'Gene', '112398', (88, 92)) ('PHD1', 'Gene', (88, 92)) ('PHD2', 'Gene', (60, 64)) ('reduced', 'NegReg', (69, 76)) ('PHD2', 'Gene', '54583', (60, 64)) ('mutants', 'Var', (93, 100)) ('PHD1', 'Gene', '112398', (51, 55)) ('half-lives', 'MPA', (32, 42)) ('PHD1', 'Gene', (51, 55)) 91206 33329393 These findings collectively demonstrated that mutant PHDs are indeed associated with susceptibility to PPGLs. ('susceptibility', 'Reg', (85, 99)) ('PHDs', 'Disease', 'None', (53, 57)) ('PPGLs', 'Disease', (103, 108)) ('associated', 'Reg', (69, 79)) ('mutant', 'Var', (46, 52)) ('PGLs', 'Phenotype', 'HP:0002668', (104, 108)) ('PPGLs', 'Chemical', '-', (103, 108)) ('PHDs', 'Disease', (53, 57)) 91207 33329393 However, compared to VHL and HIF-A, mutations in PHDs are relatively rare in patients with PPGLs. ('HIF', 'Gene', '405', (29, 32)) ('PGLs', 'Phenotype', 'HP:0002668', (92, 96)) ('PPGLs', 'Chemical', '-', (91, 96)) ('PHDs', 'Disease', (49, 53)) ('mutations', 'Var', (36, 45)) ('patients', 'Species', '9606', (77, 85)) ('VHL', 'Gene', (21, 24)) ('PHDs', 'Disease', 'None', (49, 53)) ('PPGLs', 'Disease', (91, 96)) ('VHL', 'Gene', '7428', (21, 24)) ('HIF', 'Gene', (29, 32)) 91208 33329393 Additionally, mutations of enzymes in the TCA cycle can affect VHL/HIF axis indirectly. ('affect', 'Reg', (56, 62)) ('HIF axis', 'Disease', (67, 75)) ('TCA', 'Chemical', 'MESH:D014238', (42, 45)) ('VHL', 'Gene', '7428', (63, 66)) ('VHL', 'Gene', (63, 66)) ('HIF axis', 'Disease', 'MESH:C566610', (67, 75)) ('mutations', 'Var', (14, 23)) 91209 33329393 For example, elevated levels of HIFs can be caused by the mutations in SDHx, FH, MDH, and IDH with subsequent accumulation of specific metabolites and reactive oxygen species. ('SDH', 'Gene', (71, 74)) ('mutations', 'Var', (58, 67)) ('HIFs', 'Disease', 'None', (32, 36)) ('IDH', 'Gene', (90, 93)) ('MDH', 'Gene', (81, 84)) ('elevated', 'PosReg', (13, 21)) ('IDH', 'Gene', '3417', (90, 93)) ('HIFs', 'Disease', (32, 36)) ('reactive oxygen species', 'MPA', (151, 174)) ('accumulation', 'PosReg', (110, 122)) ('specific metabolites', 'MPA', (126, 146)) ('SDH', 'Gene', '6390', (71, 74)) ('levels', 'MPA', (22, 28)) ('caused', 'Reg', (44, 50)) ('oxygen', 'Chemical', 'MESH:D010100', (160, 166)) 91210 33329393 In addition, multiple lines of evidence indicated that mutations in cluster 2 (Kinase Signaling Cluster) genes, including NF1, RET, TMEM127, ERK, MAX, and H-RAS could affect the VHL/HIF axis indirectly, although these mutations were initially thought to drive PPGLs through the oxygen-independent kinase signaling pathway, such as mTOR axis. ('mTOR', 'Gene', '2475', (331, 335)) ('HIF axis', 'Disease', 'MESH:C566610', (182, 190)) ('RET', 'Gene', '5979', (127, 130)) ('H-RAS', 'Gene', (155, 160)) ('VHL', 'Gene', (178, 181)) ('PGLs', 'Phenotype', 'HP:0002668', (261, 265)) ('H-RAS', 'Gene', '3265', (155, 160)) ('TMEM127', 'Gene', (132, 139)) ('mutations', 'Var', (55, 64)) ('RET', 'Gene', (127, 130)) ('affect', 'Reg', (167, 173)) ('HIF axis', 'Disease', (182, 190)) ('VHL', 'Gene', '7428', (178, 181)) ('NF1', 'Gene', '4763', (122, 125)) ('ERK', 'Gene', (141, 144)) ('TMEM127', 'Gene', '55654', (132, 139)) ('mTOR', 'Gene', (331, 335)) ('PPGLs', 'Chemical', '-', (260, 265)) ('oxygen', 'Chemical', 'MESH:D010100', (278, 284)) ('NF1', 'Gene', (122, 125)) ('ERK', 'Gene', '2048', (141, 144)) 91220 33329393 HIF-1 aberrant activation due to either VHL or PHD mutations increases glucose uptake and glycolysis with a concomitant decrease in mitochondrial mass. ('HIF-1', 'Gene', (0, 5)) ('activation', 'PosReg', (15, 25)) ('mutations', 'Var', (51, 60)) ('PHD', 'Disease', 'MESH:D011547', (47, 50)) ('VHL', 'Gene', (40, 43)) ('glucose uptake', 'MPA', (71, 85)) ('PHD', 'Disease', (47, 50)) ('decrease', 'NegReg', (120, 128)) ('VHL', 'Gene', '7428', (40, 43)) ('glucose', 'Chemical', 'MESH:D005947', (71, 78)) ('HIF-1', 'Gene', '3091', (0, 5)) ('mitochondrial mass', 'MPA', (132, 150)) ('increases', 'PosReg', (61, 70)) ('glycolysis', 'MPA', (90, 100)) 91225 33329393 Many studies have revealed that oncometabolite such as succinate, fumarate, and 2-hydroxyglutarate (2HG) are increased in PPGLs. ('2HG', 'Chemical', 'MESH:C019417', (100, 103)) ('PGLs', 'Phenotype', 'HP:0002668', (123, 127)) ('succinate', 'Chemical', 'MESH:D019802', (55, 64)) ('PPGLs', 'Var', (122, 127)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (80, 98)) ('oncometabolite', 'MPA', (32, 46)) ('PPGLs', 'Chemical', '-', (122, 127)) ('fumarate', 'Chemical', 'MESH:D005650', (66, 74)) ('2-hydroxyglutarate', 'MPA', (80, 98)) ('increased', 'PosReg', (109, 118)) ('succinate', 'MPA', (55, 64)) ('fumarate', 'MPA', (66, 74)) 91226 33329393 Another study found that compared to PPGLs without SDHx mutation, PPGLs with a deficient SDH have 25-fold higher succinate and 80% lower levels of fumarate, cis-aconitate, and isocitrate. ('isocitrate', 'MPA', (176, 186)) ('levels of fumarate', 'MPA', (137, 155)) ('isocitrate', 'Chemical', 'MESH:C034219', (176, 186)) ('SDH', 'Gene', (51, 54)) ('lower', 'NegReg', (131, 136)) ('succinate', 'Chemical', 'MESH:D019802', (113, 122)) ('PPGLs', 'Chemical', '-', (66, 71)) ('SDH', 'Gene', (89, 92)) ('succinate', 'MPA', (113, 122)) ('PGLs', 'Phenotype', 'HP:0002668', (38, 42)) ('fumarate', 'Chemical', 'MESH:D005650', (147, 155)) ('cis-aconitate', 'Chemical', '-', (157, 170)) ('SDH', 'Gene', '6390', (51, 54)) ('PPGLs', 'Chemical', '-', (37, 42)) ('PGLs', 'Phenotype', 'HP:0002668', (67, 71)) ('deficient', 'Var', (79, 88)) ('higher', 'PosReg', (106, 112)) ('cis-aconitate', 'MPA', (157, 170)) ('SDH', 'Gene', '6390', (89, 92)) 91227 33329393 Mutation in FH and IDH lead to the accumulation of fumarate and (R)-2-hydroxyglutarate, respectively. ('(R)-2-hydroxyglutarate', 'Chemical', '-', (64, 86)) ('accumulation', 'PosReg', (35, 47)) ('Mutation', 'Var', (0, 8)) ('fumarate', 'Chemical', 'MESH:D005650', (51, 59)) ('fumarate', 'MPA', (51, 59)) ('IDH', 'Gene', (19, 22)) ('IDH', 'Gene', '3417', (19, 22)) 91229 33329393 In addition, PPGLs with a germline mutation in genes encoding enzymes in the TCA cycle belong to Cluster I tumors, characterized by a pseudohypoxia signature. ('TCA', 'Chemical', 'MESH:D014238', (77, 80)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumors', 'Disease', (107, 113)) ('PPGLs', 'Chemical', '-', (13, 18)) ('germline mutation', 'Var', (26, 43)) ('tumors', 'Phenotype', 'HP:0002664', (107, 113)) ('hypoxia', 'Disease', (140, 147)) ('hypoxia', 'Disease', 'MESH:D000860', (140, 147)) ('PGLs', 'Phenotype', 'HP:0002668', (14, 18)) ('tumors', 'Disease', 'MESH:D009369', (107, 113)) 91239 33329393 Among them, the tyrosine kinase inhibitors (TKIs) are most widely used because TKIs can repress angiogenesis by inhibiting the VEGF pathway. ('VEGF', 'Gene', '7422', (127, 131)) ('angiogenesis', 'CPA', (96, 108)) ('VEGF', 'Gene', (127, 131)) ('TKIs', 'Var', (79, 83)) ('tyrosine kinase', 'Gene', '7294', (16, 31)) ('repress', 'NegReg', (88, 95)) ('inhibiting', 'NegReg', (112, 122)) ('tyrosine kinase', 'Gene', (16, 31)) 91250 33329393 Of 23 evaluable cases, the disease control rate (DCR) was 83% and median progression free survival (PFS) was 13.4 months, 3 (13%) patients with germline variants in RET or SDHx achieved a partial response (PR), 16 (70%) patients had stable disease (SD). ('RET', 'Gene', '5979', (165, 168)) ('SDH', 'Gene', (172, 175)) ('RET', 'Gene', (165, 168)) ('stable disease', 'Disease', (233, 247)) ('patients', 'Species', '9606', (130, 138)) ('patients', 'Species', '9606', (220, 228)) ('SD', 'Disease', 'MESH:D029461', (249, 251)) ('variants', 'Var', (153, 161)) ('partial response', 'MPA', (188, 204)) ('SDH', 'Gene', '6390', (172, 175)) ('SD', 'Disease', 'MESH:D029461', (172, 174)) 91264 33329393 A phase III clinical trial compared the safety of pazopanib and sunitinib in metastatic RCC, the results showed that patients treated with sunitinib had a higher incidence of fatigue, the hand-foot syndrome and thrombocytopenia than patients treated with pazopanib. ('fatigue', 'Disease', (175, 182)) ('fatigue', 'Phenotype', 'HP:0012378', (175, 182)) ('hand-foot syndrome', 'Disease', (188, 206)) ('thrombocytopenia', 'Disease', 'MESH:D013921', (211, 227)) ('RCC', 'Disease', 'MESH:C538614', (88, 91)) ('thrombocytopenia', 'Phenotype', 'HP:0001873', (211, 227)) ('RCC', 'Disease', (88, 91)) ('RCC', 'Phenotype', 'HP:0005584', (88, 91)) ('pazopanib', 'Chemical', 'MESH:C516667', (255, 264)) ('sunitinib', 'Var', (139, 148)) ('patients', 'Species', '9606', (117, 125)) ('fatigue', 'Disease', 'MESH:D005221', (175, 182)) ('sunitinib', 'Chemical', 'MESH:D000077210', (139, 148)) ('hand-foot syndrome', 'Disease', 'MESH:D060831', (188, 206)) ('patients', 'Species', '9606', (233, 241)) ('pazopanib', 'Chemical', 'MESH:C516667', (50, 59)) ('thrombocytopenia', 'Disease', (211, 227)) ('sunitinib', 'Chemical', 'MESH:D000077210', (64, 73)) 91267 33329393 reported that axtinib more frequently causes hypertension than sorafenib (40% vs. 29%) (NCT00678392). ('sorafenib', 'Chemical', 'MESH:D000077157', (63, 72)) ('axtinib', 'Var', (14, 21)) ('causes', 'Reg', (38, 44)) ('hypertension', 'Disease', 'MESH:D006973', (45, 57)) ('axtinib', 'Chemical', '-', (14, 21)) ('hypertension', 'Disease', (45, 57)) ('hypertension', 'Phenotype', 'HP:0000822', (45, 57)) 91278 33329393 In fact, PT2385 has entered its phase II clinical trial (NCT03108066) evaluating its efficacy in patients with advanced cancers carrying a VHL germline mutation. ('cancer', 'Phenotype', 'HP:0002664', (120, 126)) ('VHL', 'Gene', (139, 142)) ('VHL', 'Gene', '7428', (139, 142)) ('germline mutation', 'Var', (143, 160)) ('cancers', 'Phenotype', 'HP:0002664', (120, 127)) ('PT2385', 'Chemical', 'MESH:C000614279', (9, 15)) ('cancers', 'Disease', (120, 127)) ('cancers', 'Disease', 'MESH:D009369', (120, 127)) ('patients', 'Species', '9606', (97, 105)) 91280 33329393 Compared to PT2385, PT2977 have increased potency and improved pharmacokinetic profile. ('potency', 'MPA', (42, 49)) ('pharmacokinetic profile', 'MPA', (63, 86)) ('PT2977', 'Var', (20, 26)) ('PT2977', 'Chemical', '-', (20, 26)) ('increased', 'PosReg', (32, 41)) ('improved', 'PosReg', (54, 62)) ('PT2385', 'Chemical', 'MESH:C000614279', (12, 18)) 91294 33329393 For example, PX-478 is capable of downregulating both the mRNA and protein levels of HIF-1alpha. ('PX-478', 'Var', (13, 19)) ('downregulating', 'NegReg', (34, 48)) ('HIF-1alpha', 'Gene', '3091', (85, 95)) ('HIF-1alpha', 'Gene', (85, 95)) 91298 33329393 Finally, there is a myriad of compounds including echinomycin, CAY10585, KC7F2, glyceollins, bisphenol A, LW6, PX-12, cryptotanshinone (CPT), cyclo-CLLFVY, and indenopyrazoles 21 that have all been validated as selective inhibitors of HIF-1alpha with different molecular mechanisms. ('CAY10585', 'Chemical', '-', (63, 71)) ('CPT', 'Chemical', 'MESH:C037886', (136, 139)) ('HIF-1alpha', 'Gene', '3091', (235, 245)) ('KC7F2', 'Var', (73, 78)) ('KC7F2', 'Chemical', '-', (73, 78)) ('cryptotanshinone', 'Chemical', 'MESH:C037886', (118, 134)) ('PX-12', 'Chemical', 'MESH:C412893', (111, 116)) ('bisphenol A', 'Chemical', 'MESH:C006780', (93, 104)) ('indenopyrazoles', 'Chemical', '-', (160, 175)) ('LW6', 'Chemical', '-', (106, 109)) ('HIF-1alpha', 'Gene', (235, 245)) ('cyclo-CLLFVY', 'Chemical', 'MESH:C000622578', (142, 154)) ('echinomycin', 'Chemical', 'MESH:D004448', (50, 61)) ('glyceollins', 'Chemical', 'MESH:C017343', (80, 91)) ('CAY10585', 'Var', (63, 71)) 91300 33329393 Dysregulation of this axis due to either germline mutations, somatic mutations, and epigenetic dysregulation can be involved in tumorigenesis and progression of different cancer types including PPGLs. ('tumor', 'Disease', 'MESH:D009369', (128, 133)) ('involved', 'Reg', (116, 124)) ('Dysregulation', 'Var', (0, 13)) ('cancer', 'Disease', 'MESH:D009369', (171, 177)) ('PGLs', 'Phenotype', 'HP:0002668', (195, 199)) ('PPGLs', 'Disease', (194, 199)) ('cancer', 'Disease', (171, 177)) ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('germline mutations', 'Var', (41, 59)) ('tumor', 'Disease', (128, 133)) ('cancer', 'Phenotype', 'HP:0002664', (171, 177)) ('epigenetic dysregulation', 'Var', (84, 108)) ('PPGLs', 'Chemical', '-', (194, 199)) 91301 33329393 Mechanistically, by reprogramming metabolic pathways the abnormally activated HIFs drive cancer cells toward aerobic glycolysis. ('HIFs', 'Disease', 'None', (78, 82)) ('aerobic glycolysis', 'MPA', (109, 127)) ('drive', 'Reg', (83, 88)) ('cancer', 'Disease', 'MESH:D009369', (89, 95)) ('cancer', 'Disease', (89, 95)) ('abnormally', 'Var', (57, 67)) ('HIFs', 'Disease', (78, 82)) ('metabolic pathways', 'Pathway', (34, 52)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) 91341 33062351 A retrospective study evaluated 42 patients with adrenal incidentalomas who were treated between 1995 and 2005, to determine the diagnostic significance of borderline-elevated urine or plasma metanephrines, defined as 1-2 times the upper limit of normal. ('metanephrines', 'Chemical', 'MESH:D008676', (192, 205)) ('borderline-elevated', 'Var', (156, 175)) ('adrenal incidentalomas', 'Disease', (49, 71)) ('adrenal incidentalomas', 'Disease', 'MESH:C538238', (49, 71)) ('patients', 'Species', '9606', (35, 43)) ('plasma metanephrines', 'MPA', (185, 205)) ('urine', 'MPA', (176, 181)) 91350 33062351 Several imaging findings can be indicative of pheochromocytoma, adrenocortical carcinoma, or metastasis, including heterogeneity, cystic or hemorrhagic changes, high Hounsfield density (>10 HU) on CT, marked enhancement with intravenous contrast, delayed contrast washout (less than 60% at 10 minutes), or a high signal intensity on a T2-weighted MRI. ('pheochromocytoma', 'Disease', (46, 62)) ('metastasis', 'CPA', (93, 103)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (46, 62)) ('heterogeneity', 'Disease', (115, 128)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (46, 62)) ('hemorrhagic changes', 'Phenotype', 'HP:0001892', (140, 159)) ('adrenocortical carcinoma', 'Disease', (64, 88)) ('enhancement', 'PosReg', (208, 219)) ('high', 'Reg', (308, 312)) ('high Hounsfield density (>10 HU', 'Var', (161, 192)) ('carcinoma', 'Phenotype', 'HP:0030731', (79, 88)) ('cystic', 'Disease', (130, 136)) ('adrenocortical carcinoma', 'Phenotype', 'HP:0006744', (64, 88)) ('adrenocortical carcinoma', 'Disease', 'MESH:D018268', (64, 88)) 91439 32244473 The loss of epithelial cadherin follows an intracellular reprogramming of cadherin-expression that favors the synthesis of mesenchymal cadherin type (cadherin 7 and 11) and extracellular cleavage processes by the action of metalloprotease enzymes (MMP). ('epithelial cadherin', 'Gene', (12, 31)) ('cadherin-expression', 'Gene', (74, 93)) ('synthesis', 'MPA', (110, 119)) ('MMP', 'Gene', (248, 251)) ('MMP', 'Gene', '4312;4313;4318', (248, 251)) ('favors', 'PosReg', (99, 105)) ('extracellular cleavage processes', 'CPA', (173, 205)) ('epithelial cadherin', 'Gene', '999', (12, 31)) ('cadherin 7 and 11', 'Gene', '1005;1009', (150, 167)) ('loss', 'Var', (4, 8)) 91440 32244473 The cleavage of epithelial cadherin releases the C-terminal fragments able, in turn, to promote the G1/S phase transition of cell cycle together with the cyclin D1 transcription. ('cleavage', 'Var', (4, 12)) ('epithelial cadherin', 'Gene', (16, 35)) ('promote', 'PosReg', (88, 95)) ('G1/S phase transition of cell cycle', 'CPA', (100, 135)) ('cyclin D1', 'Gene', '595', (154, 163)) ('epithelial cadherin', 'Gene', '999', (16, 35)) ('cyclin D1', 'Gene', (154, 163)) ('C-terminal fragments', 'MPA', (49, 69)) 91452 32244473 In fact, SLUG knockdown blocks the function of TWIST to activate EMT in mammary cells. ('blocks', 'NegReg', (24, 30)) ('TWIST', 'Gene', '7291', (47, 52)) ('function', 'MPA', (35, 43)) ('activate', 'PosReg', (56, 64)) ('TWIST', 'Gene', (47, 52)) ('knockdown', 'Var', (14, 23)) ('SLUG', 'Gene', '6591', (9, 13)) ('SLUG', 'Gene', (9, 13)) 91458 32244473 In mouse melanoma xenografts, Snail1 transfectants that, in vitro, promote Treg expansion, can recruit Tregs and DCregs in vivo. ('mouse', 'Species', '10090', (3, 8)) ('melanoma', 'Phenotype', 'HP:0002861', (9, 17)) ('melanoma', 'Disease', (9, 17)) ('Snail1', 'Gene', (30, 36)) ('melanoma', 'Disease', 'MESH:D008545', (9, 17)) ('Treg', 'Chemical', '-', (75, 79)) ('Treg expansion', 'CPA', (75, 89)) ('recruit Tregs', 'CPA', (95, 108)) ('Tregs', 'Chemical', '-', (103, 108)) ('Treg', 'Chemical', '-', (103, 107)) ('transfectants', 'Var', (37, 50)) ('promote', 'PosReg', (67, 74)) 91460 32244473 Moreover, intratumoral injection of an anti-Snail1 siRNA can decrease local immunosuppression and resistance to DC immunotherapy, underlining the central role of EMT in cancer regression in this model. ('local immunosuppression', 'MPA', (70, 93)) ('cancer', 'Disease', (169, 175)) ('decrease', 'NegReg', (61, 69)) ('anti-Snail1', 'Var', (39, 50)) ('tumor', 'Disease', 'MESH:D009369', (15, 20)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('cancer', 'Phenotype', 'HP:0002664', (169, 175)) ('tumor', 'Disease', (15, 20)) ('cancer', 'Disease', 'MESH:D009369', (169, 175)) ('resistance to DC immunotherapy', 'MPA', (98, 128)) 91468 32244473 Ret proto-oncogene germline mutations are crucial for the onset and the progression of medullary thyroid tumors, and the occurrence of single nucleotide polymorphisms could predispose to the sporadic forms. ('Ret', 'Gene', (0, 3)) ('Ret', 'Gene', '5979', (0, 3)) ('single nucleotide polymorphisms', 'Var', (135, 166)) ('thyroid tumors', 'Disease', 'MESH:D013964', (97, 111)) ('predispose', 'Reg', (173, 183)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('thyroid tumors', 'Disease', (97, 111)) ('tumors', 'Phenotype', 'HP:0002664', (105, 111)) ('medullary thyroid tumors', 'Phenotype', 'HP:0002865', (87, 111)) 91477 32244473 The defects on the maturation of the neural crests, direct or indirect, reported in the genetic pathologies described above, result in a common alteration involving the production of cytokines and resulting in the impairment of B-lymphocyte maturation and altered T-lymphocyte cytotoxicity. ('cytotoxicity', 'Disease', (277, 289)) ('impairment', 'NegReg', (214, 224)) ('B-lymphocyte maturation', 'CPA', (228, 251)) ('altered', 'Reg', (256, 263)) ('cytotoxicity', 'Disease', 'MESH:D064420', (277, 289)) ('production of cytokines', 'MPA', (169, 192)) ('defects', 'Var', (4, 11)) 91484 32244473 Loss of function mutations or deletions in NF2 cause Neurofibromatosis type 2 (NF2), a multiple tumor-forming disease of the nervous system. ('NF2', 'Gene', '4771', (43, 46)) ('NF2', 'Gene', (79, 82)) ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('Neurofibromatosis type 2', 'Gene', (53, 77)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (53, 70)) ('Neurofibromatosis type 2', 'Gene', '4771', (53, 77)) ('deletions', 'Var', (30, 39)) ('tumor', 'Disease', (96, 101)) ('NF2', 'Gene', '4771', (79, 82)) ('Loss of function', 'NegReg', (0, 16)) ('tumor', 'Disease', 'MESH:D009369', (96, 101)) ('NF2', 'Gene', (43, 46)) ('mutations', 'Var', (17, 26)) ('disease of the nervous system', 'Phenotype', 'HP:0000707', (110, 139)) 91485 32244473 Interestingly NF2 mutations and merlin inactivation, enhancing the NFKB's transcriptome with consequential increase and release of pro-inflammatory cytokines, occur in spontaneous schwannomas and meningiomas, as well as other types of cancer including mesothelioma, glioma multiforme, breast, colorectal, skin, clear cell renal cell carcinoma, hepatic and prostate cancer. ('mesothelioma', 'Disease', (252, 264)) ('schwannomas', 'Phenotype', 'HP:0100008', (180, 191)) ('glioma multiforme', 'Disease', (266, 283)) ('breast', 'Disease', (285, 291)) ('mesothelioma', 'Disease', 'MESH:D008654', (252, 264)) ('merlin', 'Gene', '4771', (32, 38)) ('meningioma', 'Phenotype', 'HP:0002858', (196, 206)) ('meningiomas', 'Phenotype', 'HP:0002858', (196, 207)) ('clear cell renal cell carcinoma', 'Disease', (311, 342)) ('hepatic and prostate cancer', 'Disease', 'MESH:D011471', (344, 371)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (322, 342)) ('transcriptome', 'MPA', (74, 87)) ('cancer', 'Disease', (365, 371)) ('cancer', 'Disease', 'MESH:D009369', (235, 241)) ('glioma multiforme', 'Disease', 'MESH:D004892', (266, 283)) ('cancer', 'Phenotype', 'HP:0002664', (365, 371)) ('NF2', 'Gene', '4771', (14, 17)) ('clear cell renal cell carcinoma', 'Phenotype', 'HP:0006770', (311, 342)) ('release of pro-inflammatory cytokines', 'MPA', (120, 157)) ('carcinoma', 'Phenotype', 'HP:0030731', (333, 342)) ('glioma', 'Phenotype', 'HP:0009733', (266, 272)) ('enhancing', 'PosReg', (53, 62)) ('schwannomas and meningiomas', 'Disease', 'MESH:D009442', (180, 207)) ('colorectal', 'Disease', (293, 303)) ('increase', 'PosReg', (107, 115)) ('NF2', 'Gene', (14, 17)) ('cancer', 'Disease', 'MESH:D009369', (365, 371)) ('schwannoma', 'Phenotype', 'HP:0100008', (180, 190)) ('merlin', 'Gene', (32, 38)) ('NFKB', 'Gene', (67, 71)) ('cancer', 'Disease', (235, 241)) ('prostate cancer', 'Phenotype', 'HP:0012125', (356, 371)) ('clear cell renal cell carcinoma', 'Disease', 'MESH:C538614', (311, 342)) ('skin', 'Disease', (305, 309)) ('glioma multiforme', 'Phenotype', 'HP:0012174', (266, 283)) ('inactivation', 'Var', (39, 51)) ('cancer', 'Phenotype', 'HP:0002664', (235, 241)) ('mutations', 'Var', (18, 27)) 91492 32244473 There is a growing body of evidence to suggest that mutations in neuroblastoma ras viral oncogene homolog (N-RAS) and v-raf murine sarcoma viral oncogene homolog B (BRAF), both activators of mitogen-activated protein kinase (MAPK-ERK), are involved in melanoma development. ('mutations', 'Var', (52, 61)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (65, 78)) ('ERK', 'Gene', '26413', (230, 233)) ('N-RAS', 'Gene', '18176', (107, 112)) ('involved', 'Reg', (240, 248)) ('BRAF', 'Gene', '109880', (165, 169)) ('melanoma', 'Phenotype', 'HP:0002861', (252, 260)) ('melanoma', 'Disease', (252, 260)) ('neuroblastoma', 'Disease', 'MESH:D009447', (65, 78)) ('BRAF', 'Gene', (165, 169)) ('v-raf murine sarcoma viral oncogene homolog B', 'Gene', '673', (118, 163)) ('melanoma', 'Disease', 'MESH:D008545', (252, 260)) ('sarcoma', 'Phenotype', 'HP:0100242', (131, 138)) ('neuroblastoma', 'Disease', (65, 78)) ('v-raf murine sarcoma viral oncogene homolog B', 'Gene', (118, 163)) ('N-RAS', 'Gene', (107, 112)) ('ERK', 'Gene', (230, 233)) 91494 32244473 In addition, oncogenic signaling, mutations, proto and repressor genes have been demonstrated to be associated with melanoma progression and its EMT phenotype. ('associated', 'Reg', (100, 110)) ('melanoma', 'Phenotype', 'HP:0002861', (116, 124)) ('melanoma', 'Disease', (116, 124)) ('melanoma', 'Disease', 'MESH:D008545', (116, 124)) ('mutations', 'Var', (34, 43)) ('oncogenic signaling', 'CPA', (13, 32)) 91518 32244473 Even in MTC, it was found that the expression of CXCR4 correlates with advanced tumor stage and metastatic phenotype while that of CXCR7 declined in metastases. ('tumor', 'Disease', 'MESH:D009369', (80, 85)) ('metastases', 'Disease', (149, 159)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('metastases', 'Disease', 'MESH:D009362', (149, 159)) ('CXCR7', 'Gene', '57007', (131, 136)) ('tumor', 'Disease', (80, 85)) ('CXCR4', 'Var', (49, 54)) ('metastatic phenotype', 'CPA', (96, 116)) ('CXCR7', 'Gene', (131, 136)) 91528 32244473 Pheochromocytoma susceptibility may be associated with germline mutations in the tumor-suppressor genes VHL and NF1 and in the proto-oncogene RET, and recently has been associated with germline SDHD mutations. ('Pheochromocytoma', 'Disease', (0, 16)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('SDHD', 'Gene', '6392', (194, 198)) ('VHL', 'Gene', '7428', (104, 107)) ('RET', 'Gene', '5979', (142, 145)) ('SDHD', 'Gene', (194, 198)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('NF1', 'Gene', '4763', (112, 115)) ('tumor', 'Disease', 'MESH:D009369', (81, 86)) ('NF1', 'Gene', (112, 115)) ('associated', 'Reg', (169, 179)) ('associated', 'Reg', (39, 49)) ('mutations', 'Var', (64, 73)) ('RET', 'Gene', (142, 145)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('VHL', 'Gene', (104, 107)) ('tumor', 'Disease', (81, 86)) 91532 32244473 The presence of SDHB mutation has been associated with the induction of expression of genes responsible for endothelial mesenchymal transition like LOXL2, TWIST, SNAI1, TCF3, MMP2, and MMP1. ('SNAI1', 'Gene', (162, 167)) ('MMP2', 'Gene', (175, 179)) ('induction', 'PosReg', (59, 68)) ('TWIST', 'Gene', (155, 160)) ('TCF3', 'Gene', (169, 173)) ('SDHB', 'Gene', '6390', (16, 20)) ('TCF3', 'Gene', '6929', (169, 173)) ('SDHB', 'Gene', (16, 20)) ('mutation', 'Var', (21, 29)) ('expression', 'MPA', (72, 82)) ('MMP1', 'Gene', '4312', (185, 189)) ('MMP2', 'Gene', '4313', (175, 179)) ('LOXL2', 'Gene', (148, 153)) ('SNAI1', 'Gene', '6615', (162, 167)) ('presence', 'Var', (4, 12)) ('LOXL2', 'Gene', '4017', (148, 153)) ('MMP1', 'Gene', (185, 189)) ('TWIST', 'Gene', '7291', (155, 160)) 91536 32244473 The amplification of the N-MYC proto-oncogene is present in about 30% of NBs and is associated with a more aggressive course. ('associated with', 'Reg', (84, 99)) ('NBs', 'Disease', (73, 76)) ('N-MYC', 'Gene', '4613', (25, 30)) ('NBs', 'Disease', 'None', (73, 76)) ('N-MYC', 'Gene', (25, 30)) ('amplification', 'Var', (4, 17)) 91546 32244473 In fact, genes controlling the activity of ROCKs are mutated in approximately 30% of neuroblastoma and high ROCK2 expression in neuroblastoma tumors corresponds to poor patient survival. ('ROCK2', 'Gene', '9475', (108, 113)) ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('neuroblastoma', 'Disease', 'MESH:D009447', (128, 141)) ('neuroblastoma', 'Disease', (128, 141)) ('neuroblastoma', 'Disease', 'MESH:D009447', (85, 98)) ('mutated', 'Var', (53, 60)) ('poor', 'NegReg', (164, 168)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (128, 141)) ('neuroblastoma', 'Disease', (85, 98)) ('neuroblastoma tumors', 'Disease', 'MESH:D009447', (128, 148)) ('patient', 'Species', '9606', (169, 176)) ('expression', 'MPA', (114, 124)) ('ROCK2', 'Gene', (108, 113)) ('tumors', 'Phenotype', 'HP:0002664', (142, 148)) ('neuroblastoma tumors', 'Disease', (128, 148)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (85, 98)) 91556 32244473 Inactivating mutations of the tumor suppressor gene NF2 that encode the protein merlin have been observed in 60% of all SCs. ('observed', 'Reg', (97, 105)) ('merlin', 'Gene', '4771', (80, 86)) ('Inactivating mutations', 'Var', (0, 22)) ('NF2', 'Gene', (52, 55)) ('tumor', 'Disease', 'MESH:D009369', (30, 35)) ('merlin', 'Gene', (80, 86)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('NF2', 'Gene', '4771', (52, 55)) ('tumor', 'Disease', (30, 35)) ('SCs', 'Disease', (120, 123)) 91570 32244473 The NF1 is caused by mutations of the NF1 gene on chromosome 17q11.2, encoding neurofibromin which harbours a GAP-related domain, and belongs to the group of mammalian RAS-GAPs. ('NF1', 'Gene', '4763', (38, 41)) ('mammalian', 'Species', '9606', (158, 167)) ('neurofibromin', 'Gene', (79, 92)) ('neurofibromin', 'Gene', '4763', (79, 92)) ('NF1', 'Gene', (4, 7)) ('NF1', 'Gene', '4763', (4, 7)) ('NF1', 'Gene', (38, 41)) ('caused by', 'Reg', (11, 20)) ('mutations', 'Var', (21, 30)) 91571 32244473 Deregulation of RAS signaling in NF1 results in the development of multiple neurofibromas. ('results in', 'Reg', (37, 47)) ('Deregulation', 'Var', (0, 12)) ('NF1', 'Gene', (33, 36)) ('neurofibroma', 'Phenotype', 'HP:0001067', (76, 88)) ('RAS signaling', 'MPA', (16, 29)) ('multiple neurofibromas', 'Disease', 'MESH:C537392', (67, 89)) ('NF1', 'Gene', '4763', (33, 36)) ('multiple neurofibromas', 'Phenotype', 'HP:0001067', (67, 89)) ('multiple neurofibromas', 'Disease', (67, 89)) ('neurofibromas', 'Phenotype', 'HP:0001067', (76, 89)) 91583 32244473 All types of MPNST show highly recurrent genetic inactivation in NF1, CDKN2A, and the PRC2 components SUZ12 and EED. ('SUZ12', 'Gene', (102, 107)) ('EED', 'Gene', '8726', (112, 115)) ('EED', 'Gene', (112, 115)) ('genetic inactivation', 'Var', (41, 61)) ('CDKN2A', 'Gene', (70, 76)) ('NF1', 'Gene', (65, 68)) ('SUZ12', 'Gene', '23512', (102, 107)) ('NF1', 'Gene', '4763', (65, 68)) ('CDKN2A', 'Gene', '1029', (70, 76)) 91594 32244473 The first genetic alteration observed in meningiomas was monosomy of chromosome 22 or deletion of 22q; the key gene involved, NF2 is the gene involved in the genesis of the type-2 neurofibromatosis, and is located on 22q12, encoding the tumor suppressor merlin. ('merlin', 'Gene', '4771', (254, 260)) ('monosomy', 'Var', (57, 65)) ('tumor', 'Disease', (237, 242)) ('neurofibromatosis', 'Disease', 'MESH:C537392', (180, 197)) ('merlin', 'Gene', (254, 260)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (180, 197)) ('neurofibroma', 'Phenotype', 'HP:0001067', (180, 192)) ('tumor', 'Phenotype', 'HP:0002664', (237, 242)) ('meningiomas', 'Phenotype', 'HP:0002858', (41, 52)) ('NF2', 'Gene', '4771', (126, 129)) ('NF2', 'Gene', (126, 129)) ('meningioma', 'Phenotype', 'HP:0002858', (41, 51)) ('tumor', 'Disease', 'MESH:D009369', (237, 242)) ('neurofibromatosis', 'Disease', (180, 197)) ('meningiomas', 'Disease', (41, 52)) ('meningiomas', 'Disease', 'MESH:D008577', (41, 52)) ('deletion', 'Var', (86, 94)) 91595 32244473 Interestingly, genetic abnormalities in meningiomas are different in relation to the location and the type of the lesion: in fact, SMO and AKT1-MTOR mutations are quite common in non-NF2, genomically stable meningiomas of the skull base. ('NF2', 'Gene', (183, 186)) ('genetic abnormalities', 'Disease', 'MESH:D030342', (15, 36)) ('genetic abnormalities', 'Disease', (15, 36)) ('SMO', 'Gene', '6608', (131, 134)) ('AKT1', 'Gene', '207', (139, 143)) ('MTOR', 'Gene', (144, 148)) ('MTOR', 'Gene', '2475', (144, 148)) ('mutations', 'Var', (149, 158)) ('meningioma', 'Phenotype', 'HP:0002858', (207, 217)) ('common', 'Reg', (169, 175)) ('meningiomas', 'Disease', 'MESH:D008577', (207, 218)) ('meningiomas', 'Disease', 'MESH:D008577', (40, 51)) ('meningioma', 'Phenotype', 'HP:0002858', (40, 50)) ('SMO', 'Gene', (131, 134)) ('AKT1', 'Gene', (139, 143)) ('meningiomas', 'Phenotype', 'HP:0002858', (207, 218)) ('meningiomas', 'Phenotype', 'HP:0002858', (40, 51)) ('meningiomas', 'Disease', (207, 218)) ('meningiomas', 'Disease', (40, 51)) ('NF2', 'Gene', '4771', (183, 186)) 91596 32244473 On the other hand, meningiomas with NF2 inactivation are genomically less stable and localize to the brain hemispheres. ('NF2', 'Gene', '4771', (36, 39)) ('meningiomas', 'Phenotype', 'HP:0002858', (19, 30)) ('meningiomas', 'Disease', (19, 30)) ('NF2', 'Gene', (36, 39)) ('meningiomas', 'Disease', 'MESH:D008577', (19, 30)) ('meningioma', 'Phenotype', 'HP:0002858', (19, 29)) ('inactivation', 'Var', (40, 52)) 91597 32244473 Moreover, mutations of NF2 are most frequent in fibroblastic/transitional meningiomas, KLF4 and TRAF7 in secretory meningiomas, and AKT1 mutations in grade I meningothelial meningiomas of the skull base and spine. ('meningioma', 'Phenotype', 'HP:0002858', (115, 125)) ('meningiomas', 'Disease', (173, 184)) ('AKT1', 'Gene', '207', (132, 136)) ('KLF4', 'Gene', (87, 91)) ('ret', 'Gene', (108, 111)) ('ret', 'Gene', '5979', (108, 111)) ('NF2', 'Gene', '4771', (23, 26)) ('meningiomas', 'Disease', 'MESH:D008577', (115, 126)) ('meningioma', 'Phenotype', 'HP:0002858', (74, 84)) ('AKT1', 'Gene', (132, 136)) ('meningiomas', 'Disease', 'MESH:D008577', (74, 85)) ('NF2', 'Gene', (23, 26)) ('meningiomas', 'Phenotype', 'HP:0002858', (115, 126)) ('meningiomas', 'Phenotype', 'HP:0002858', (74, 85)) ('meningiomas', 'Disease', (115, 126)) ('meningothelial meningiomas', 'Disease', (158, 184)) ('TRAF7', 'Gene', '84231', (96, 101)) ('KLF4', 'Gene', '9314', (87, 91)) ('meningiomas', 'Disease', (74, 85)) ('frequent', 'Reg', (36, 44)) ('meningioma', 'Phenotype', 'HP:0002858', (173, 183)) ('meningothelial meningiomas', 'Disease', 'MESH:D008577', (158, 184)) ('meningiomas', 'Disease', 'MESH:D008577', (173, 184)) ('mutations', 'Var', (137, 146)) ('meningiomas', 'Phenotype', 'HP:0002858', (173, 184)) ('mutations', 'Var', (10, 19)) ('TRAF7', 'Gene', (96, 101)) 91611 32244473 Sometimes in meningiomas infiltration by tumor-associated macrophages (TAMs) may be very pronounced, especially in cases of meningiomas that carry isolated monosomy 22, where the immune infiltrates also contain greater numbers of cytotoxic T and NK-cells that are associated with an increased anti-tumoral immune response. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('meningioma', 'Phenotype', 'HP:0002858', (124, 134)) ('tumor', 'Disease', (298, 303)) ('meningiomas', 'Disease', (124, 135)) ('tumor', 'Disease', (41, 46)) ('meningiomas', 'Disease', 'MESH:D008577', (124, 135)) ('meningiomas', 'Phenotype', 'HP:0002858', (13, 24)) ('tumor', 'Phenotype', 'HP:0002664', (298, 303)) ('meningioma', 'Phenotype', 'HP:0002858', (13, 23)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) ('TAMs', 'Chemical', '-', (71, 75)) ('meningiomas', 'Phenotype', 'HP:0002858', (124, 135)) ('meningiomas', 'Disease', 'MESH:D008577', (13, 24)) ('tumor', 'Disease', 'MESH:D009369', (298, 303)) ('monosomy 22', 'Var', (156, 167)) ('meningiomas', 'Disease', (13, 24)) ('cytotoxic T', 'Disease', (230, 241)) ('cytotoxic T', 'Disease', 'MESH:D064420', (230, 241)) 91629 32244473 Germline inactivating mutations of the PRKAR1A gene are found in 37% of patients with sporadic CC and in more than 70% of patients with familial CC. ('PRKAR1A', 'Gene', (39, 46)) ('Germline inactivating mutations', 'Var', (0, 31)) ('PRKAR1A', 'Gene', '5573', (39, 46)) ('patients', 'Species', '9606', (122, 130)) ('found', 'Reg', (56, 61)) ('patients', 'Species', '9606', (72, 80)) 91687 32206105 Allografts of tumors obtained from immortalized mouse chromaffin cells (imCC) carrying a homozygous knockout of the Sdhb gene (Sdhb-/-) were propagated in the back of the neck fat pad of NMR nude female mice (n= 37, 6 weeks old, weight= 30g, Janvier Labs, France). ('Sdhb', 'Gene', (116, 120)) ('Sdhb', 'Gene', (127, 131)) ('mouse', 'Species', '10090', (48, 53)) ('mice', 'Species', '10090', (203, 207)) ('Sdhb', 'Gene', '67680', (116, 120)) ('tumors', 'Disease', (14, 20)) ('Sdhb', 'Gene', '67680', (127, 131)) ('tumors', 'Phenotype', 'HP:0002664', (14, 20)) ('knockout', 'Var', (100, 108)) ('tumors', 'Disease', 'MESH:D009369', (14, 20)) ('neck fat pad', 'Phenotype', 'HP:0025383', (171, 183)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) 91725 32206105 Alternatively, sections were incubated successively with GLUT1 (1:1000, ab115730, Abcam) and anti-CD31 (1:600 DIA 310, Clinisciences) using the OPAL 4 color kit (NEL820001KT, PerkinElmer) at room temperature during 1 hour. ('GLUT1', 'Gene', (57, 62)) ('rat', 'Species', '10116', (201, 204)) ('GLUT1', 'Gene', '100125988', (57, 62)) ('CD31', 'Gene', (98, 102)) ('CD31', 'Gene', '29583', (98, 102)) ('1:1000', 'Var', (64, 70)) 91726 32206105 The secondary antibody was Opal Polymer anti-rabbit HRP (ARR1001KT, PerkinElmer) for GLUT1 and anti-rat HRP (MP-7444-15, Eurobio) for CD31. ('GLUT1', 'Gene', (85, 90)) ('Polymer', 'Chemical', 'MESH:D011108', (32, 39)) ('CD31', 'Gene', (134, 138)) ('GLUT1', 'Gene', '100125988', (85, 90)) ('CD31', 'Gene', '29583', (134, 138)) ('ARR1001KT', 'Var', (57, 66)) ('rabbit', 'Species', '9986', (45, 51)) ('rat', 'Species', '10116', (100, 103)) 91765 32206105 While, in VEH, GLUT1 was homogeneously distributed throughout the tumor (Figure 6A), in SUNI we observed a heterogeneous distribution, where patches of high GLUT1 expression were juxtaposed to regions with low or no visible expression (Figure 6B, C). ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('GLUT1', 'Gene', '100125988', (15, 20)) ('GLUT1', 'Gene', (157, 162)) ('tumor', 'Disease', (66, 71)) ('GLUT1', 'Gene', '100125988', (157, 162)) ('GLUT1', 'Gene', (15, 20)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) ('high', 'Var', (152, 156)) 91786 32206105 PPGL are frequently inherited tumors with an important genetic heterogeneity, with SDHB mutations being the most frequently associated with a metastatic disease. ('tumors', 'Disease', (30, 36)) ('SDHB', 'Gene', (83, 87)) ('tumors', 'Disease', 'MESH:D009369', (30, 36)) ('PGL', 'Phenotype', 'HP:0002668', (1, 4)) ('tumors', 'Phenotype', 'HP:0002664', (30, 36)) ('SDHB', 'Gene', '67680', (83, 87)) ('mutations', 'Var', (88, 97)) ('associated', 'Reg', (124, 134)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('PPGL', 'Chemical', '-', (0, 4)) ('metastatic disease', 'Disease', (142, 160)) 91827 32206105 In other words, sunitinib creates a "real" hypoxia in cells adapted to pseudo-hypoxia. ('hypoxia', 'Disease', 'MESH:D000860', (78, 85)) ('hypoxia', 'Disease', (78, 85)) ('hypoxia', 'Disease', (43, 50)) ('hypoxia', 'Disease', 'MESH:D000860', (43, 50)) ('sunitinib', 'Var', (16, 25)) ('sunitinib', 'Chemical', 'MESH:D000077210', (16, 25)) 91843 31348302 Among familial cases, mutations of the succinate dehydrogenase (SDH) subunit genes (succinate dehydrogenase subunit [SDH]B, SDHC, SDHD, succinate dehydrogenase subunit AF2 [SDHAF2] , and SDHA) are the most common cause. ('succinate dehydrogenase', 'Gene', (84, 107)) ('SDHC', 'Gene', (124, 128)) ('SDHD', 'Gene', (130, 134)) ('succinate dehydrogenase subunit AF2', 'Gene', '54949', (136, 171)) ('[SDH]B', 'Gene', (116, 122)) ('succinate dehydrogenase', 'Gene', (39, 62)) ('succinate dehydrogenase', 'Gene', '6390', (84, 107)) ('SDH', 'Gene', (64, 67)) ('SDHA', 'Gene', (187, 191)) ('SDHC', 'Gene', '6391', (124, 128)) ('SDHAF2', 'Gene', '54949', (173, 179)) ('mutations', 'Var', (22, 31)) ('SDHAF2', 'Gene', (173, 179)) ('SDHA', 'Gene', (173, 177)) ('succinate dehydrogenase', 'Gene', '6390', (136, 159)) ('SDHA', 'Gene', '6389', (187, 191)) ('common cause', 'Reg', (206, 218)) ('SDHA', 'Gene', '6389', (173, 177)) ('SDHD', 'Gene', '6392', (130, 134)) ('succinate dehydrogenase', 'Gene', '6390', (39, 62)) ('succinate dehydrogenase subunit AF2', 'Gene', (136, 171)) 91844 31348302 We here report a 31-year-old patient with a known SDHD mutation whose disease has been revealed by a left PHEO during childhood and who presented at age 29 years a large paraganglioma of the right jugular foramen, a concomitant PHEO of the left adrenal and 2 retroperitoneal paragangliomas. ('patient', 'Species', '9606', (29, 36)) ('retroperitoneal paragangliomas', 'Disease', (259, 289)) ('paraganglioma', 'Disease', 'MESH:D010235', (275, 288)) ('paraganglioma', 'Disease', 'MESH:D010235', (170, 183)) ('SDHD', 'Gene', (50, 54)) ('SDHD', 'Gene', '6392', (50, 54)) ('retroperitoneal paragangliomas', 'Disease', 'MESH:D010235', (259, 289)) ('retroperitoneal paragangliomas', 'Phenotype', 'HP:0006729', (259, 289)) ('paraganglioma', 'Phenotype', 'HP:0002668', (275, 288)) ('paragangliomas', 'Phenotype', 'HP:0002668', (275, 289)) ('paraganglioma', 'Phenotype', 'HP:0002668', (170, 183)) ('PHEO', 'Phenotype', 'HP:0002666', (228, 232)) ('mutation', 'Var', (55, 63)) ('paraganglioma', 'Disease', (170, 183)) ('paraganglioma', 'Disease', (275, 288)) ('PHEO', 'Phenotype', 'HP:0002666', (106, 110)) 91859 31348302 Up to 40% of cases may be associated with an inherited familial syndrome, including succinate dehydrogenase (SDH) enzyme mutations. ('succinate dehydrogenase', 'Gene', (84, 107)) ('SDH', 'Gene', (109, 112)) ('mutations', 'Var', (121, 130)) ('succinate dehydrogenase', 'Gene', '6390', (84, 107)) ('familial syndrome', 'Disease', (55, 72)) ('familial syndrome', 'Disease', 'MESH:D009386', (55, 72)) ('associated', 'Reg', (26, 36)) 91860 31348302 Any mutation of the SDH complex subunit (SDHB, SDHC, SDHD, SDHAF2, and SDHA) predisposes mainly to the development of PPGL, but the recent literature also reported other SDH-related lesions such as gastrointestinal stromal tumors (GIST), renal cell carcinomas, and pituitary adenomas (PA). ('tumor', 'Phenotype', 'HP:0002664', (223, 228)) ('PGL', 'Phenotype', 'HP:0002668', (119, 122)) ('SDHAF2', 'Gene', '54949', (59, 65)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (238, 259)) ('SDHAF2', 'Gene', (59, 65)) ('mutation', 'Var', (4, 12)) ('PGL', 'Disease', (119, 122)) ('carcinomas', 'Phenotype', 'HP:0030731', (249, 259)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (198, 229)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (198, 229)) ('SDHA', 'Gene', (71, 75)) ('PA', 'Phenotype', 'HP:0002893', (285, 287)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (265, 283)) ('SDHC', 'Gene', '6391', (47, 51)) ('SDHA', 'Gene', '6389', (71, 75)) ('predisposes', 'Reg', (77, 88)) ('gastrointestinal stromal tumors', 'Disease', (198, 229)) ('SDHD', 'Gene', '6392', (53, 57)) ('PA', 'Disease', 'MESH:D010911', (285, 287)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (265, 283)) ('pituitary adenomas', 'Disease', (265, 283)) ('GIST', 'Disease', (231, 235)) ('PGL', 'Disease', 'MESH:D010235', (119, 122)) ('renal cell carcinomas', 'Disease', 'MESH:D002292', (238, 259)) ('GIST', 'Phenotype', 'HP:0100723', (231, 235)) ('SDHB', 'Gene', (41, 45)) ('reported', 'Reg', (155, 163)) ('SDHA', 'Gene', (59, 63)) ('tumors', 'Phenotype', 'HP:0002664', (223, 229)) ('SDHD', 'Gene', (53, 57)) ('renal cell carcinomas', 'Disease', (238, 259)) ('GIST', 'Disease', 'MESH:D046152', (231, 235)) ('SDHA', 'Gene', '6389', (59, 63)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (265, 282)) ('SDHC', 'Gene', (47, 51)) 91863 31348302 A 31-year-old patient with a known succinate dehydrogenase enzyme complex D (SDHD) mutation underwent a left adrenalectomy for an adrenal pheochromocytoma (PHEO) at the age of 10, which was revealed by hypertensive peaks. ('hypertensive', 'Disease', 'MESH:D006973', (202, 214)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (138, 154)) ('hypertensive', 'Disease', (202, 214)) ('SDHD', 'Gene', '6392', (77, 81)) ('succinate dehydrogenase', 'Gene', (35, 58)) ('succinate dehydrogenase', 'Gene', '6390', (35, 58)) ('adrenal pheochromocytoma', 'Disease', (130, 154)) ('SDHD', 'Gene', (77, 81)) ('mutation', 'Var', (83, 91)) ('patient', 'Species', '9606', (14, 21)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (130, 154)) ('PHEO', 'Phenotype', 'HP:0002666', (156, 160)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (130, 154)) 91864 31348302 He had a positive family history of SDHD mutation (exon 4, c.315-?_480+?del) inherited from his father and his two brothers also carry this mutation. ('SDHD', 'Gene', '6392', (36, 40)) ('SDHD', 'Gene', (36, 40)) ('c.315-?_480+?del', 'Mutation', 'c.315-?_480+?del', (59, 75)) ('c.315-?_480+?del', 'Var', (59, 75)) 91868 31348302 An fluorodeoxyglucose (FDG)-positron emission tomography (PET) (FDG-PET) was performed and showed a hypermetabolism of all the lesions, compatible with a left adrenal PHEO and multiple PGLs in the context of the known SDHD mutation (Fig. ('PGL', 'Disease', 'MESH:D010235', (185, 188)) ('PHEO', 'Phenotype', 'HP:0002666', (167, 171)) ('SDHD', 'Gene', '6392', (218, 222)) ('hypermetabolism', 'MPA', (100, 115)) ('SDHD', 'Gene', (218, 222)) ('fluorodeoxyglucose', 'Chemical', 'MESH:D019788', (3, 21)) ('PGL', 'Phenotype', 'HP:0002668', (185, 188)) ('mutation', 'Var', (223, 231)) ('FDG', 'Chemical', 'MESH:D019788', (23, 26)) ('PGL', 'Disease', (185, 188)) ('FDG', 'Chemical', 'MESH:D019788', (64, 67)) 91890 31348302 Mutation of the SDH subunit genes A, B, C, or D is a known cause of hereditary PGL with an autosomal dominant inheritance pattern. ('PGL', 'Disease', 'MESH:D010235', (79, 82)) ('Mutation', 'Var', (0, 8)) ('SDH subunit', 'Gene', (16, 27)) ('cause', 'Reg', (59, 64)) ('PGL', 'Phenotype', 'HP:0002668', (79, 82)) ('PGL', 'Disease', (79, 82)) 91891 31348302 SDH is a tumor-suppressor gene and any mutation in SDH subunits predisposes to PPGL. ('tumor', 'Disease', 'MESH:D009369', (9, 14)) ('mutation', 'Var', (39, 47)) ('PGL', 'Disease', (80, 83)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('predisposes', 'Reg', (64, 75)) ('PGL', 'Disease', 'MESH:D010235', (80, 83)) ('SDH', 'Gene', (51, 54)) ('tumor', 'Disease', (9, 14)) ('PGL', 'Phenotype', 'HP:0002668', (80, 83)) 91892 31348302 SDHD mutation is the most frequent familial PGL syndrome and is an imprinted gene, PPGLs occurring mainly in patients who inherited the mutation from their father. ('PGL', 'Phenotype', 'HP:0002668', (84, 87)) ('PGL', 'Phenotype', 'HP:0002668', (44, 47)) ('patients', 'Species', '9606', (109, 117)) ('PGL', 'Disease', (44, 47)) ('PGL', 'Disease', (84, 87)) ('SDHD', 'Gene', '6392', (0, 4)) ('PGL', 'Disease', 'MESH:D010235', (84, 87)) ('PGL', 'Disease', 'MESH:D010235', (44, 47)) ('SDHD', 'Gene', (0, 4)) ('mutation', 'Var', (5, 13)) 91893 31348302 SDHD mutation causes predominantly neck and skull base PGL, often multifocal and usually benign. ('PGL', 'Disease', 'MESH:D010235', (55, 58)) ('PGL', 'Phenotype', 'HP:0002668', (55, 58)) ('SDHD', 'Gene', '6392', (0, 4)) ('causes', 'Reg', (14, 20)) ('SDHD', 'Gene', (0, 4)) ('PGL', 'Disease', (55, 58)) ('mutation', 'Var', (5, 13)) 91896 31348302 The coexistence of PA and SDHD mutation has been reported for the first time by Xekouki et al in 2012. ('mutation', 'Var', (31, 39)) ('PA', 'Phenotype', 'HP:0002893', (19, 21)) ('SDHD', 'Gene', (26, 30)) ('SDHD', 'Gene', '6392', (26, 30)) ('PA', 'Disease', 'MESH:D010911', (19, 21)) 91898 31348302 In addition, O'Toole et al reported in 2015 a compilation of 72 patients with concomitant PA and PPGL from whom only 5 had a SDHD mutation. ('PA', 'Phenotype', 'HP:0002893', (90, 92)) ('patients', 'Species', '9606', (64, 72)) ('PGL', 'Phenotype', 'HP:0002668', (98, 101)) ('mutation', 'Var', (130, 138)) ('PA', 'Disease', 'MESH:D010911', (90, 92)) ('SDHD', 'Gene', '6392', (125, 129)) ('PGL', 'Disease', (98, 101)) ('PGL', 'Disease', 'MESH:D010235', (98, 101)) ('SDHD', 'Gene', (125, 129)) 91899 31348302 All PA associated with SDHD mutation were functional macroadenomas. ('PA', 'Disease', 'MESH:D010911', (4, 6)) ('SDHD', 'Gene', '6392', (23, 27)) ('macroadenomas', 'Disease', 'None', (53, 66)) ('SDHD', 'Gene', (23, 27)) ('macroadenomas', 'Disease', (53, 66)) ('mutation', 'Var', (28, 36)) ('PA', 'Phenotype', 'HP:0002893', (4, 6)) 91900 31348302 Besides, even though the data remains little known, some authors hypothesize that PAs associated with SDH mutations might behave more aggressively and be more resistant to treatment. ('aggressively', 'PosReg', (134, 146)) ('SDH', 'Gene', (102, 105)) ('PA', 'Phenotype', 'HP:0002893', (82, 84)) ('behave', 'CPA', (122, 128)) ('mutations', 'Var', (106, 115)) ('PA', 'Disease', 'MESH:D010911', (82, 84)) 91904 31348302 Interestingly, Gill et al in 2014 studied the incidence of SDH mutation in 309 PA by immunohistochemistry for SDHA and SDHB. ('PA', 'Phenotype', 'HP:0002893', (79, 81)) ('SDHA', 'Gene', (110, 114)) ('PA', 'Disease', 'MESH:D010911', (79, 81)) ('mutation', 'Var', (63, 71)) ('SDH', 'Gene', (59, 62)) ('SDHA', 'Gene', '6389', (110, 114)) 91906 31348302 They concluded that SDH mutation is a very rare event in an unselected population with PA. ('PA', 'Disease', 'MESH:D010911', (87, 89)) ('SDH', 'Gene', (20, 23)) ('PA', 'Phenotype', 'HP:0002893', (87, 89)) ('mutation', 'Var', (24, 32)) 91907 31348302 Moreover, in 2015, Xekouki et al studied the prevalence of SDHx mutation in a cohort of 168 patients with unselected PA. ('PA', 'Disease', 'MESH:D010911', (117, 119)) ('mutation', 'Var', (64, 72)) ('patients', 'Species', '9606', (92, 100)) ('SDHx', 'Gene', (59, 63)) ('PA', 'Phenotype', 'HP:0002893', (117, 119)) 91909 31348302 Overall, only 1.8% of case of PA showed an SDHx mutation. ('PA', 'Disease', 'MESH:D010911', (30, 32)) ('SDHx', 'Gene', (43, 47)) ('mutation', 'Var', (48, 56)) ('PA', 'Phenotype', 'HP:0002893', (30, 32)) 91913 31348302 They also studied the evolution of the pituitary gland in SDHB mutated mice and reported that SDHB mutated mice had more pituitary hyperplasia and a higher proportion of prolactin and IGF-1 producing cells, suggesting a possible association between PA and PPGL, probably related to SDH germline mutation. ('mice', 'Species', '10090', (71, 75)) ('PGL', 'Disease', 'MESH:D010235', (257, 260)) ('PA', 'Disease', 'MESH:D010911', (249, 251)) ('SDHB', 'Gene', (94, 98)) ('more', 'PosReg', (116, 120)) ('pituitary hyperplasia', 'Disease', (121, 142)) ('PGL', 'Phenotype', 'HP:0002668', (257, 260)) ('PA', 'Phenotype', 'HP:0002893', (249, 251)) ('mice', 'Species', '10090', (107, 111)) ('mutated', 'Var', (99, 106)) ('prolactin', 'MPA', (170, 179)) ('PGL', 'Disease', (257, 260)) ('higher', 'PosReg', (149, 155)) ('pituitary hyperplasia', 'Disease', 'MESH:D006965', (121, 142)) 91914 31348302 Furthermore, Denes et al from a series of 39 patients with sporadic or familial PA and PPGL described 8 cases of mutation of the SDH complex and both PA and PPGL. ('PA', 'Phenotype', 'HP:0002893', (80, 82)) ('mutation', 'Var', (113, 121)) ('SDH complex', 'Gene', (129, 140)) ('PGL', 'Phenotype', 'HP:0002668', (88, 91)) ('PGL', 'Phenotype', 'HP:0002668', (158, 161)) ('PGL', 'Disease', (88, 91)) ('PGL', 'Disease', (158, 161)) ('PA', 'Disease', 'MESH:D010911', (80, 82)) ('PA', 'Phenotype', 'HP:0002893', (150, 152)) ('patients', 'Species', '9606', (45, 53)) ('PGL', 'Disease', 'MESH:D010235', (88, 91)) ('PA', 'Disease', 'MESH:D010911', (150, 152)) ('PGL', 'Disease', 'MESH:D010235', (158, 161)) 91915 31348302 Besides, this series revealed a particular histologic feature in all patients with PA and an SDH mutation. ('PA', 'Phenotype', 'HP:0002893', (83, 85)) ('PA', 'Disease', 'MESH:D010911', (83, 85)) ('mutation', 'Var', (97, 105)) ('patients', 'Species', '9606', (69, 77)) ('SDH', 'Gene', (93, 96)) 91916 31348302 They found intracytoplasmic vacuoles in the pituitary tumor, a characteristic that could be a unique feature in these patients with concomitant PA, PPGL, and SDH mutation. ('PGL', 'Disease', (149, 152)) ('PA', 'Disease', 'MESH:D010911', (144, 146)) ('pituitary tumor', 'Disease', (44, 59)) ('found', 'Reg', (5, 10)) ('SDH', 'Gene', (158, 161)) ('PGL', 'Disease', 'MESH:D010235', (149, 152)) ('pituitary tumor', 'Disease', 'MESH:D010911', (44, 59)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) ('PA', 'Phenotype', 'HP:0002893', (144, 146)) ('PGL', 'Phenotype', 'HP:0002668', (149, 152)) ('mutation', 'Var', (162, 170)) ('patients', 'Species', '9606', (118, 126)) 91917 31348302 In conclusion, these data suggest that the association between PA and PPGL could be more than just a coincidence in our patient, the existence of a predisposition to PA in patients with PPGL and SDHD mutation might be involved, but this finding needs further investigation. ('PGL', 'Disease', (187, 190)) ('PGL', 'Disease', (71, 74)) ('patient', 'Species', '9606', (172, 179)) ('patient', 'Species', '9606', (120, 127)) ('PA', 'Disease', 'MESH:D010911', (63, 65)) ('PGL', 'Disease', 'MESH:D010235', (187, 190)) ('PA', 'Phenotype', 'HP:0002893', (166, 168)) ('PGL', 'Disease', 'MESH:D010235', (71, 74)) ('PA', 'Disease', 'MESH:D010911', (166, 168)) ('SDHD', 'Gene', (195, 199)) ('SDHD', 'Gene', '6392', (195, 199)) ('patients', 'Species', '9606', (172, 180)) ('PGL', 'Phenotype', 'HP:0002668', (187, 190)) ('PGL', 'Phenotype', 'HP:0002668', (71, 74)) ('mutation', 'Var', (200, 208)) ('PA', 'Phenotype', 'HP:0002893', (63, 65)) 91919 31372201 One of the candidate driver genetic alterations can happen in succinate dehydrogenases (SDHx) coding gene include SDHA, SDHB, SDHC, SDHD, and SDHAF2. ('SDHA', 'Gene', '6389', (142, 146)) ('SDHD', 'Gene', (132, 136)) ('succinate', 'Chemical', 'MESH:D019802', (62, 71)) ('SDHx', 'Gene', (88, 92)) ('SDHC', 'Gene', (126, 130)) ('SDHA', 'Gene', '6389', (114, 118)) ('succinate dehydrogenase', 'Gene', (62, 85)) ('succinate dehydrogenase', 'Gene', '6390', (62, 85)) ('alterations', 'Var', (36, 47)) ('SDHA', 'Gene', (142, 146)) ('SDHAF2', 'Gene', (142, 148)) ('SDHB', 'Gene', '6390', (120, 124)) ('SDHAF2', 'Gene', '54949', (142, 148)) ('SDHC', 'Gene', '6391', (126, 130)) ('SDHA', 'Gene', (114, 118)) ('SDHB', 'Gene', (120, 124)) ('SDHD', 'Gene', '6392', (132, 136)) 91924 31372201 Succinate dehydrogenase and fumarate hydratase (other enzyme of Krebs cycle) inactivation result in an obstruction of Krebs cycle, impaired respiration and abnormal accretion of their substrates, succinate and fumarate. ('impaired', 'NegReg', (131, 139)) ('Krebs', 'Chemical', '-', (64, 69)) ('accretion of', 'MPA', (165, 177)) ('Krebs', 'Enzyme', (118, 123)) ('fumarate hydratase', 'Gene', '2271', (28, 46)) ('fumarate hydratase', 'Gene', (28, 46)) ('succinate', 'MPA', (196, 205)) ('respiration', 'MPA', (140, 151)) ('obstruction', 'NegReg', (103, 114)) ('Krebs', 'Chemical', '-', (118, 123)) ('inactivation', 'Var', (77, 89)) 91925 31372201 Krebs cycle genes, fumarate hydratase (FH) and SDH are mutated in a compartment of several malignancies, secondary to accretion of their substrates, fumarate and succinate, respectively. ('fumarate', 'MPA', (149, 157)) ('mutated', 'Var', (55, 62)) ('SDH', 'Gene', (47, 50)) ('FH', 'Gene', '2271', (39, 41)) ('succinate', 'MPA', (162, 171)) 91928 31372201 Germline mutations in FH gene influence individuals with leiomyomas and renal cell cancer (HLRCC), while mutations in SDH can be the cause of paragangliomas and phaeochromocytomas (endocrine tumors). ('RCC', 'Phenotype', 'HP:0005584', (93, 96)) ('RCC', 'Disease', (93, 96)) ('leiomyomas and renal cell cancer', 'Disease', 'MESH:C538614', (57, 89)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (181, 196)) ('cancer', 'Phenotype', 'HP:0002664', (83, 89)) ('paraganglioma', 'Phenotype', 'HP:0002668', (142, 155)) ('mutations', 'Var', (105, 114)) ('tumor', 'Phenotype', 'HP:0002664', (191, 196)) ('cause', 'Reg', (133, 138)) ('RCC', 'Disease', 'MESH:C538614', (93, 96)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (72, 89)) ('paragangliomas', 'Phenotype', 'HP:0002668', (142, 156)) ('paragangliomas and phaeochromocytomas', 'Disease', 'MESH:D010235', (142, 179)) ('leiomyoma', 'Disease', 'MESH:D007889', (57, 66)) ('influence', 'Reg', (30, 39)) ('SDH', 'Gene', (118, 121)) ('endocrine tumors', 'Disease', 'MESH:D004701', (181, 197)) ('endocrine tumors', 'Disease', (181, 197)) ('endocrine tumor', 'Disease', 'MESH:D004701', (181, 196)) ('leiomyoma', 'Disease', (57, 66)) ('tumors', 'Phenotype', 'HP:0002664', (191, 197)) 91932 31372201 Gastrointestinal stromal tumor (GIST) and paraganglioma are caused by germline mutations in SDH subunits B, C or D. Because of their strong syndromic and heritable source and distinctive history, SDH-deficient tumors are essential to be identified. ('syndromic', 'Disease', 'MESH:D013577', (140, 149)) ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('SDH', 'Gene', (92, 95)) ('tumor', 'Phenotype', 'HP:0002664', (210, 215)) ('SDH-deficient tumors', 'Disease', 'MESH:D009369', (196, 216)) ('tumors', 'Phenotype', 'HP:0002664', (210, 216)) ('paraganglioma', 'Phenotype', 'HP:0002668', (42, 55)) ('SDH-deficient tumor', 'Disease', 'MESH:D009369', (196, 215)) ('SDH-deficient tumors', 'Disease', (196, 216)) ('paraganglioma', 'Disease', (42, 55)) ('caused by', 'Reg', (60, 69)) ('GIST', 'Phenotype', 'HP:0100723', (32, 36)) ('Gastrointestinal stromal tumor', 'Disease', (0, 30)) ('Gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (0, 30)) ('syndromic', 'Disease', (140, 149)) ('mutations', 'Var', (79, 88)) 91934 31372201 SDH mutations Mitochondrial DNA mutations have been found in dissimilar cancers and seem to change mitochondrial metabolism, increase risk of tumorigenesis and allow cancer cell modification to changing environments. ('cancers', 'Disease', (73, 80)) ('mitochondrial metabolism', 'Disease', 'MESH:D028361', (100, 124)) ('allow', 'Reg', (161, 166)) ('SDH', 'Gene', (0, 3)) ('cancer', 'Phenotype', 'HP:0002664', (73, 79)) ('tumorigenesis', 'CPA', (143, 156)) ('cancers', 'Phenotype', 'HP:0002664', (73, 80)) ('change', 'Reg', (93, 99)) ('mutations', 'Var', (4, 13)) ('cancer', 'Phenotype', 'HP:0002664', (167, 173)) ('cancers', 'Disease', 'MESH:D009369', (73, 80)) ('Mitochondrial DNA', 'Gene', (15, 32)) ('mitochondrial metabolism', 'Disease', (100, 124)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) 91935 31372201 SDHD, SDHB and SDHC mutations are a basis for a series of molecular procedures leading to the abnormal stabilization of hypoxia-inducible factors (HIF) under normoxic or hypoxic conditions or pseudo-hypoxia (via inactivation of SDH, accumulation of succinate, inhibition of prolyl-4-hydroxylases and subsequent HIF hydroxylation), thus, encouraging cell proliferation, angiogenesis and tumor genesis . ('angiogenesis', 'CPA', (369, 381)) ('pseudo-hypoxia', 'Disease', (192, 206)) ('accumulation', 'PosReg', (233, 245)) ('HIF hydroxylation', 'MPA', (311, 328)) ('inhibition', 'NegReg', (260, 270)) ('hypoxia', 'Disease', (120, 127)) ('hypoxia', 'Disease', (199, 206)) ('pseudo-hypoxia', 'Disease', 'MESH:D000860', (192, 206)) ('cell proliferation', 'CPA', (349, 367)) ('prolyl-4-hydroxylases', 'Enzyme', (274, 295)) ('hypoxia', 'Disease', 'MESH:D000860', (120, 127)) ('hypoxia', 'Disease', 'MESH:D000860', (199, 206)) ('tumor', 'Phenotype', 'HP:0002664', (386, 391)) ('SDH', 'Gene', (228, 231)) ('mutations', 'Var', (20, 29)) ('inactivation', 'NegReg', (212, 224)) ('tumor genesis', 'CPA', (386, 399)) ('encouraging', 'PosReg', (337, 348)) ('SDHC', 'Gene', (15, 19)) 91937 31372201 Although most of the oncogenic activities of SDH mutations have been known to be related to a metabolite, succinate, which accumulates in SDH-deficient cells, in another way, these cells show high levels of succinate also accessible with elevated caspase 3 and/or caspase 7 levels. ('caspase 3', 'Gene', (247, 256)) ('caspase 3', 'Gene', '836', (247, 256)) ('mutations', 'Var', (49, 58)) ('succinate', 'MPA', (207, 216)) ('high levels of succinate', 'Phenotype', 'HP:0020149', (192, 216)) ('elevated', 'PosReg', (238, 246)) ('accumulates', 'PosReg', (123, 134)) ('caspase 7', 'Gene', (264, 273)) ('SDH', 'Gene', (45, 48)) ('oncogenic activities', 'CPA', (21, 41)) ('caspase 7', 'Gene', '840', (264, 273)) ('SDH-deficient', 'Gene', (138, 151)) 91939 31372201 Also, pseudo-hypoxia, the major phenomenon shown to date to mediate the tumorigenic ending of the loss of mitochondrial tumor suppressors, is a common mechanism for both SDH and FH mutations and in some tumors with SDHD or SDHB mutations, the hypoxia-inducible factor (HIF) pathway, and therefore an angiogenic reaction are activated due to high vascular density. ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('activated', 'PosReg', (324, 333)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('mitochondrial tumor', 'Disease', 'MESH:D028361', (106, 125)) ('SDHD', 'Gene', (215, 219)) ('tumors', 'Phenotype', 'HP:0002664', (203, 209)) ('mutations', 'Var', (228, 237)) ('angiogenic reaction', 'CPA', (300, 319)) ('mitochondrial tumor', 'Disease', (106, 125)) ('mutations', 'Var', (181, 190)) ('SDHB', 'Gene', (223, 227)) ('tumor', 'Phenotype', 'HP:0002664', (120, 125)) ('SDH', 'Gene', (170, 173)) 91940 31372201 Thus, SDHB and SDHD inactivation is associated with deregulation of the HIF-1 and HIF-2 transcription factors, and a non-HIF-dependent pathway involving JunB, cJun and EglN3/PHD3 in normal developmental apoptosis in sympathetic neuronal progenitor cells. ('deregulation', 'MPA', (52, 64)) ('EglN3', 'Gene', (168, 173)) ('EglN3', 'Gene', '112399', (168, 173)) ('HIF-1', 'Gene', (72, 77)) ('inactivation', 'Var', (20, 32)) ('SDHD', 'Gene', (15, 19)) ('JunB', 'Gene', (153, 157)) ('PHD3', 'Gene', '112399', (174, 178)) ('cJun', 'Gene', '3725', (159, 163)) ('PHD3', 'Gene', (174, 178)) ('HIF-2 transcription factors', 'Gene', (82, 109)) ('SDHB', 'Gene', (6, 10)) ('JunB', 'Gene', '3726', (153, 157)) ('HIF-1', 'Gene', '3091', (72, 77)) ('cJun', 'Gene', (159, 163)) 91941 31372201 Also, the loss of SDH mutation causes succinate accretion and reduces alpha-ketoglutarate-dependent dioxygenase enzymes such as the TET family of DNA hydroxylases. ('loss', 'Var', (10, 14)) ('mutation', 'Var', (22, 30)) ('reduces', 'NegReg', (62, 69)) ('reduces alpha-ketoglutarate', 'Phenotype', 'HP:0012403', (62, 89)) ('TET', 'Chemical', 'MESH:C010349', (132, 135)) ('SDH', 'Gene', (18, 21)) ('alpha-ketoglutarate-dependent dioxygenase enzymes', 'MPA', (70, 119)) ('succinate accretion', 'MPA', (38, 57)) 91943 31372201 Therefore, SDH and FH mutations can inhibit DNA and histone demethylases, leading to loss of 5hmC and low level 5hmC in SDH-deficient tumors associated notably with nuclear exclusion of TET protein. ('tumors', 'Phenotype', 'HP:0002664', (134, 140)) ('SDH', 'Gene', (11, 14)) ('inhibit', 'NegReg', (36, 43)) ('5hmC', 'Chemical', '-', (93, 97)) ('low level 5hmC', 'MPA', (102, 116)) ('5hmC', 'MPA', (93, 97)) ('SDH-deficient', 'Gene', (120, 133)) ('mutations', 'Var', (22, 31)) ('loss', 'NegReg', (85, 89)) ('5hmC', 'Chemical', '-', (112, 116)) ('tumor', 'Phenotype', 'HP:0002664', (134, 139)) 91946 31372201 Thus, genetic testing allows familial consultation and identifies persons at high risk of malignancy (SDHB mutations) or considerable multiorgan disease. ('mutations', 'Var', (107, 116)) ('persons', 'Species', '9606', (66, 73)) ('malignancy', 'Disease', 'MESH:D009369', (90, 100)) ('malignancy', 'Disease', (90, 100)) ('SDHB', 'Gene', (102, 106)) 91953 31372201 Pheochromocytomas and paragangliomas are neuroendocrine tumors that occur sporadically and in some heritable tumor syndromes due to germline mutations in SDHB, SDHC or SDHD genes. ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (41, 62)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('SDHD', 'Gene', (168, 172)) ('paraganglioma', 'Phenotype', 'HP:0002668', (22, 35)) ('paragangliomas', 'Phenotype', 'HP:0002668', (22, 36)) ('germline mutations', 'Var', (132, 150)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (41, 61)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (41, 62)) ('SDHC', 'Gene', (160, 164)) ('Pheochromocytomas', 'Disease', (0, 17)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('neuroendocrine', 'Disease', 'MESH:D018358', (41, 55)) ('neuroendocrine', 'Disease', (41, 55)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('tumors', 'Phenotype', 'HP:0002664', (56, 62)) ('neuroendocrine tumors', 'Disease', (41, 62)) ('SDHB', 'Gene', (154, 158)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (46, 61)) ('paragangliomas', 'Disease', (22, 36)) 91961 31372201 Patients with SDHB mutations are younger, more commonly have extra-adrenal tumors and a shorter metanephrine excretion doubling time-related to shorter survival. ('shorter', 'NegReg', (88, 95)) ('metanephrine excretion doubling time-related', 'MPA', (96, 140)) ('shorter', 'NegReg', (144, 151)) ('renal tumor', 'Disease', 'MESH:D007674', (69, 80)) ('renal tumors', 'Phenotype', 'HP:0009726', (69, 81)) ('renal tumor', 'Phenotype', 'HP:0009726', (69, 80)) ('mutations', 'Var', (19, 28)) ('Patients', 'Species', '9606', (0, 8)) ('renal tumors', 'Disease', 'MESH:D007674', (69, 81)) ('extra-adrenal tumors', 'Disease', (61, 81)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('extra-adrenal tumors', 'Disease', 'MESH:D010236', (61, 81)) ('tumors', 'Phenotype', 'HP:0002664', (75, 81)) ('SDHB', 'Gene', (14, 18)) 91965 31372201 Also, among GISTs that begin in children and young adults, insulin-like growth factor 1 receptor (IGF1R) overexpression is usually observed in those with KIT/PDGFRA wild-type but not in those with either mutant kinase. ('GIST', 'Phenotype', 'HP:0100723', (12, 16)) ('IGF1R', 'Gene', (98, 103)) ('children', 'Species', '9606', (32, 40)) ('overexpression', 'PosReg', (105, 119)) ('insulin-like growth factor 1 receptor', 'Gene', (59, 96)) ('IGF1R', 'Gene', '3480', (98, 103)) ('GISTs', 'Phenotype', 'HP:0100723', (12, 17)) ('KIT/PDGFRA', 'Var', (154, 164)) ('insulin-like growth factor 1 receptor', 'Gene', '3480', (59, 96)) 91971 31372201 Carney triad (CT) shows the association of paragangliomas (PGLs) with GISTs and pulmonary chondromas in which inactivating mutations of the mitochondrial complex II SDH enzyme subunits SDHB, SDHC and SDHD are found in PGLs, gain-of-function mutations of c-kit (KIT), and platelet-derived growth factor receptor A (PDGFRA) in GISTs. ('SDHB', 'Gene', (185, 189)) ('pulmonary chondromas', 'Disease', 'MESH:D002812', (80, 100)) ('GIST', 'Phenotype', 'HP:0100723', (325, 329)) ('c-kit (KIT', 'Gene', (254, 264)) ('platelet-derived growth factor receptor A', 'Gene', '5156', (271, 312)) ('GIST', 'Phenotype', 'HP:0100723', (70, 74)) ('GISTs', 'Phenotype', 'HP:0100723', (325, 330)) ('SDHD', 'Gene', (200, 204)) ('platelet-derived growth factor receptor A', 'Gene', (271, 312)) ('GISTs', 'Phenotype', 'HP:0100723', (70, 75)) ('PDGFRA', 'Gene', (314, 320)) ('gain-of-function', 'PosReg', (224, 240)) ('PGLs', 'Phenotype', 'HP:0002668', (59, 63)) ('SDHC', 'Gene', (191, 195)) ('PGL', 'Phenotype', 'HP:0002668', (59, 62)) ('pulmonary chondromas', 'Phenotype', 'HP:0031474', (80, 100)) ('paraganglioma', 'Phenotype', 'HP:0002668', (43, 56)) ('paragangliomas', 'Phenotype', 'HP:0002668', (43, 57)) ('pulmonary chondromas', 'Disease', (80, 100)) ('PGLs', 'Phenotype', 'HP:0002668', (218, 222)) ('PGL', 'Phenotype', 'HP:0002668', (218, 221)) ('inactivating mutations', 'Var', (110, 132)) ('mutations', 'Var', (241, 250)) 91973 31372201 Patients with metastatic KIT/PDGFRA wild-type succinate dehydrogenase-deficient gastrointestinal stromal tumors harboring succinate dehydrogenase subunit A mutations show a remarkable long survival. ('KIT/PDGFRA', 'Gene', (25, 35)) ('succinate dehydrogenase subunit A', 'Gene', (122, 155)) ('mutations', 'Var', (156, 165)) ('dehydrogenase-deficient gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (56, 111)) ('succinate dehydrogenase subunit A', 'Gene', '6389', (122, 155)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (80, 111)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (80, 110)) ('tumors', 'Phenotype', 'HP:0002664', (105, 111)) 91974 31372201 Furthermore, patients with SDHX mutations need germline testing to establish whether the mutation is sporadic or germline, and if a germline mutation is shown, genetic consultation is indicated. ('mutations', 'Var', (32, 41)) ('SDHX', 'Chemical', '-', (27, 31)) ('SDHX', 'Gene', (27, 31)) 91979 31372201 Moreover, germline mutations in Krebs cycle enzyme, SDH, can also cause a hereditary tumor susceptibility syndrome. ('cause', 'Reg', (66, 71)) ('SDH', 'Gene', (52, 55)) ('germline mutations', 'Var', (10, 28)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('hereditary tumor', 'Disease', (74, 90)) ('hereditary tumor', 'Disease', 'MESH:D009386', (74, 90)) 91982 31372201 The tumor had a mixed histology pattern of high-grade papillary and collecting duct carcinoma and characteristic pale eosinophilic cytoplasmic inclusions like SDHB-deficient RCC; this is the first report that identifies SDHA inactivation in RCC. ('SDHB-deficient RCC', 'Disease', (159, 177)) ('high-grade papillary', 'Disease', (43, 63)) ('carcinoma', 'Phenotype', 'HP:0030731', (84, 93)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) ('duct carcinoma', 'Disease', (79, 93)) ('duct carcinoma', 'Disease', 'MESH:D021441', (79, 93)) ('RCC', 'Phenotype', 'HP:0005584', (174, 177)) ('SDHB-deficient RCC', 'Disease', 'MESH:C538614', (159, 177)) ('inactivation', 'Var', (225, 237)) ('RCC', 'Phenotype', 'HP:0005584', (241, 244)) 91983 31372201 Despite the fact that most tumors are low grade, a lot of other tumors can be shown in an aggressive fashion, predominantly if they are high nuclear grade, and have coagulative necrosis or sarcomatoid differentiation . ('necrosis', 'Disease', 'MESH:D009336', (177, 185)) ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('tumors', 'Phenotype', 'HP:0002664', (64, 70)) ('coagulative necrosis', 'Phenotype', 'HP:0010885', (165, 185)) ('sarcomatoid', 'Disease', (189, 200)) ('tumors', 'Phenotype', 'HP:0002664', (27, 33)) ('high nuclear grade', 'Var', (136, 154)) ('sarcomatoid', 'Disease', 'MESH:C538614', (189, 200)) ('necrosis', 'Disease', (177, 185)) ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) 91984 31372201 Other epithelial tumors The succinate dehydrogenase complex catalyzes the oxidation of succinate to fumarate; mutations in its subunits SDHA, SDHB, SDHC and SDHD, and in the assembly factor SDHAF2, result in syndromes with divergent tumor types, including pheochromocytoma/paraganglioma, gastrointestinal stromal tumor, and, less often, renal-cell carcinoma, pituitary adenoma ,and breast cancer. ('renal-cell carcinoma', 'Disease', 'MESH:C538614', (338, 358)) ('pheochromocytoma/paraganglioma', 'Disease', (257, 287)) ('SDHB', 'Gene', (143, 147)) ('SDHC', 'Gene', (149, 153)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (289, 319)) ('mutations', 'Var', (111, 120)) ('breast cancer', 'Disease', (383, 396)) ('renal-cell carcinoma', 'Phenotype', 'HP:0005584', (338, 358)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (257, 287)) ('carcinoma', 'Phenotype', 'HP:0030731', (349, 358)) ('cancer', 'Phenotype', 'HP:0002664', (390, 396)) ('tumor', 'Phenotype', 'HP:0002664', (234, 239)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (257, 273)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) ('gastrointestinal stromal tumor', 'Disease', (289, 319)) ('tumor', 'Phenotype', 'HP:0002664', (314, 319)) ('SDHD', 'Gene', (158, 162)) ('result in', 'Reg', (199, 208)) ('breast cancer', 'Phenotype', 'HP:0003002', (383, 396)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (360, 377)) ('paraganglioma', 'Phenotype', 'HP:0002668', (274, 287)) ('tumors', 'Phenotype', 'HP:0002664', (17, 23)) ('renal-cell carcinoma', 'Disease', (338, 358)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (360, 377)) ('breast cancer', 'Disease', 'MESH:D001943', (383, 396)) ('SDHA', 'Gene', (137, 141)) ('pituitary adenoma', 'Disease', (360, 377)) 91985 31372201 Also, head and neck PGLs, extra-adrenal PGLs, a number of other neuroendocrine or non-neuroendocrine neoplasms have been related to mutations in SDH genes. ('related', 'Reg', (121, 128)) ('neoplasms', 'Phenotype', 'HP:0002664', (101, 110)) ('PGL', 'Phenotype', 'HP:0002668', (40, 43)) ('non-neuroendocrine neoplasms', 'Disease', (82, 110)) ('neuroendocrine neoplasms', 'Phenotype', 'HP:0100634', (86, 110)) ('mutations', 'Var', (132, 141)) ('extra-adrenal PGLs', 'Disease', (26, 44)) ('PGL', 'Phenotype', 'HP:0002668', (20, 23)) ('neoplasms', 'Disease', 'MESH:D009369', (101, 110)) ('neoplasms', 'Disease', (101, 110)) ('SDH', 'Gene', (145, 148)) ('PGLs', 'Phenotype', 'HP:0002668', (20, 24)) ('non-neuroendocrine neoplasms', 'Disease', 'MESH:D018358', (82, 110)) ('PGLs', 'Phenotype', 'HP:0002668', (40, 44)) 91986 31372201 Thyroid cancer is the most common endocrine tumor in which SDHB and SDHD mutations are linked to epigenetic alterations. ('epigenetic alterations', 'Var', (97, 119)) ('Thyroid cancer', 'Disease', 'MESH:D013964', (0, 14)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (34, 49)) ('Thyroid cancer', 'Phenotype', 'HP:0002890', (0, 14)) ('linked', 'Reg', (87, 93)) ('SDHD', 'Gene', (68, 72)) ('cancer', 'Phenotype', 'HP:0002664', (8, 14)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('Thyroid cancer', 'Disease', (0, 14)) ('SDHB', 'Gene', (59, 63)) ('mutations', 'Var', (73, 82)) 91987 31372201 A distinctive case of testicular seminoma has been reported in a carrier of germline SDHD mutations, which presented the loss of the wild type allele in tumor cells. ('mutations', 'Var', (90, 99)) ('testicular seminoma', 'Phenotype', 'HP:0100617', (22, 41)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('testicular seminoma', 'Disease', (22, 41)) ('SDHD', 'Gene', (85, 89)) ('testicular seminoma', 'Disease', 'MESH:D018239', (22, 41)) 91988 31372201 The frequent neural crest embryonal origin of both pheochromocytoma and neuroblastoma with the common loss of the locus 1p35-36 in the last tumors, a section where SDHB gene is located, suggested that genetic alterations in SDHB might be related to the progression or advanced neuroblastoma tumors. ('neuroblastoma tumors', 'Disease', (277, 297)) ('genetic alterations', 'Var', (201, 220)) ('pheochromocytoma and neuroblastoma', 'Disease', 'MESH:D010673', (51, 85)) ('tumors', 'Phenotype', 'HP:0002664', (291, 297)) ('neuroblastoma', 'Disease', (72, 85)) ('tumors', 'Phenotype', 'HP:0002664', (140, 146)) ('neuroblastoma tumors', 'Disease', 'MESH:D009447', (277, 297)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (72, 85)) ('tumor', 'Phenotype', 'HP:0002664', (291, 296)) ('neuroblastoma', 'Disease', (277, 290)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (51, 67)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (277, 290)) ('neuroblastoma', 'Disease', 'MESH:D009447', (72, 85)) ('neuroblastoma', 'Disease', 'MESH:D009447', (277, 290)) ('SDHB', 'Gene', (164, 168)) ('related', 'Reg', (238, 245)) ('loss', 'NegReg', (102, 106)) ('SDHB', 'Gene', (224, 228)) 91989 31372201 Papillary thyroid cancer from SDHx mutation is also seen in cowden syndrome. ('thyroid cancer', 'Phenotype', 'HP:0002890', (10, 24)) ('cowden syndrome', 'Disease', (60, 75)) ('Papillary thyroid cancer', 'Disease', 'MESH:D000077273', (0, 24)) ('SDHx', 'Gene', (30, 34)) ('cancer', 'Phenotype', 'HP:0002664', (18, 24)) ('Papillary thyroid cancer', 'Disease', (0, 24)) ('Papillary thyroid cancer', 'Phenotype', 'HP:0002895', (0, 24)) ('mutation', 'Var', (35, 43)) ('cowden syndrome', 'Disease', 'MESH:D006223', (60, 75)) 91990 31372201 The homozygous/compound heterozygous mutations in SDHA result in rigorous neurological dysfunction and cardiomyopathy, but heterozygous germline mutations in SDHB-D cause a pheochromocytoma-PGL syndrome. ('rigorous neurological dysfunction', 'Disease', 'MESH:D009422', (65, 98)) ('PGL', 'Phenotype', 'HP:0002668', (190, 193)) ('pheochromocytoma-PGL syndrome', 'Disease', 'MESH:D010235', (173, 202)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (173, 189)) ('cause', 'Reg', (165, 170)) ('SDHB-D', 'Gene', (158, 164)) ('pheochromocytoma-PGL syndrome', 'Disease', (173, 202)) ('cardiomyopathy', 'Disease', (103, 117)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (103, 117)) ('SDHA', 'Gene', (50, 54)) ('homozygous/compound heterozygous mutations', 'Var', (4, 46)) ('rigorous neurological dysfunction', 'Disease', (65, 98)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (103, 117)) 91991 31372201 Some carriers of SDHB or SDHD mutations have been found to have renal cell carcinoma or papillary thyroid cancer which also appears in Cowden syndrome. ('renal cell carcinoma or papillary thyroid cancer', 'Disease', (64, 112)) ('Cowden syndrome', 'Disease', (135, 150)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (88, 112)) ('carcinoma', 'Phenotype', 'HP:0030731', (75, 84)) ('renal cell carcinoma or papillary thyroid cancer', 'Disease', 'MESH:C538614', (64, 112)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (64, 84)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (98, 112)) ('mutations', 'Var', (30, 39)) ('SDHB', 'Gene', (17, 21)) ('SDHD', 'Gene', (25, 29)) ('Cowden syndrome', 'Disease', 'MESH:D006223', (135, 150)) ('cancer', 'Phenotype', 'HP:0002664', (106, 112)) 91992 31372201 However, mutations in SDHA cause the lethal pediatric neurodegenerative disease and Leigh's syndrome but not paraganglioma. ('SDHA', 'Gene', (22, 26)) ('mutations', 'Var', (9, 18)) ('pediatric neurodegenerative disease', 'Disease', 'MESH:D019636', (44, 79)) ('neurodegenerative disease', 'Phenotype', 'HP:0002180', (54, 79)) ('cause', 'Reg', (27, 32)) ("Leigh's syndrome", 'Disease', (84, 100)) ('pediatric neurodegenerative disease', 'Disease', (44, 79)) ('neurodegenerative disease', 'Disease', 'MESH:D019636', (54, 79)) ("Leigh's syndrome", 'Disease', 'MESH:D007888', (84, 100)) ('paraganglioma', 'Phenotype', 'HP:0002668', (109, 122)) 91993 31372201 In Leigh syndrome, a severe neurodegenerative disease, there was a compound heterozygous germline SDHA-mutation (one allele with nonsense and another with missense mutation) . ('neurodegenerative disease', 'Phenotype', 'HP:0002180', (28, 53)) ('SDHA-mutation', 'Gene', (98, 111)) ('SDHA-mutation', 'Var', (98, 111)) ('missense mutation', 'Var', (155, 172)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (3, 17)) ('Leigh syndrome', 'Disease', (3, 17)) 91994 31372201 Thus, germline SDHA mutations are related to juvenile encephalopathy . ('juvenile encephalopathy', 'Disease', (45, 68)) ('juvenile encephalopathy', 'Disease', 'MESH:D001927', (45, 68)) ('SDHA', 'Gene', (15, 19)) ('encephalopathy', 'Phenotype', 'HP:0001298', (54, 68)) ('related', 'Reg', (34, 41)) ('mutations', 'Var', (20, 29)) ('juvenile encephalopathy', 'Phenotype', 'HP:0005681', (45, 68)) 91995 31372201 Also, several other neoplasms have been reported in SDHx mutation carriers, consisting of pancreatic neuroendocrine tumor, adrenal cortical adenoma, neuroblastoma, ganglioneuroma, adenomatoid tumor of the adrenal gland, melanoma, lung cancer, breast carcinoma, esophageal cancer, rectal and ovarian carcinomas, uterine adenocarcinoma, uterine leiomyoma, testicular seminoma, bladder cancer, meningioma, oligodendroglioma, cecal polyps and hematolymphoid malignancies. ('bladder cancer', 'Disease', 'MESH:D001749', (375, 389)) ('bladder cancer', 'Disease', (375, 389)) ('ganglioneuroma', 'Disease', (164, 178)) ('cancer', 'Phenotype', 'HP:0002664', (272, 278)) ('ovarian carcinomas', 'Phenotype', 'HP:0025318', (291, 309)) ('adrenal cortical adenoma', 'Disease', 'MESH:D018246', (123, 147)) ('pancreatic neuroendocrine tumor', 'Disease', (90, 121)) ('lung cancer', 'Disease', (230, 241)) ('esophageal cancer', 'Disease', (261, 278)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (101, 121)) ('adenocarcinoma', 'Disease', 'MESH:D000230', (319, 333)) ('breast carcinoma', 'Phenotype', 'HP:0003002', (243, 259)) ('cancer', 'Phenotype', 'HP:0002664', (383, 389)) ('neoplasms', 'Phenotype', 'HP:0002664', (20, 29)) ('bladder cancer', 'Phenotype', 'HP:0009725', (375, 389)) ('pancreatic neuroendocrine tumor', 'Phenotype', 'HP:0030405', (90, 121)) ('SDHx', 'Gene', (52, 56)) ('hematolymphoid malignancies', 'Disease', (439, 466)) ('breast carcinoma', 'Disease', (243, 259)) ('tumor of the adrenal gland', 'Phenotype', 'HP:0100631', (192, 218)) ('polyps', 'Disease', 'MESH:D011127', (428, 434)) ('uterine leiomyoma', 'Phenotype', 'HP:0000131', (335, 352)) ('meningioma', 'Disease', (391, 401)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('meningioma', 'Phenotype', 'HP:0002858', (391, 401)) ('rectal', 'Disease', (280, 286)) ('adenomatoid tumor', 'Disease', (180, 197)) ('melanoma', 'Phenotype', 'HP:0002861', (220, 228)) ('melanoma', 'Disease', (220, 228)) ('reported', 'Reg', (40, 48)) ('tumor', 'Phenotype', 'HP:0002664', (192, 197)) ('lung cancer', 'Disease', 'MESH:D008175', (230, 241)) ('carcinoma', 'Phenotype', 'HP:0030731', (299, 308)) ('mutation', 'Var', (57, 65)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (106, 121)) ('carcinoma', 'Phenotype', 'HP:0030731', (324, 333)) ('neuroblastoma', 'Disease', (149, 162)) ('hematolymphoid malignancies', 'Disease', 'MESH:D009369', (439, 466)) ('ganglioneuroma', 'Phenotype', 'HP:0003005', (164, 178)) ('lung cancer', 'Phenotype', 'HP:0100526', (230, 241)) ('uterine leiomyoma', 'Disease', (335, 352)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (149, 162)) ('adrenal cortical adenoma', 'Disease', (123, 147)) ('meningioma', 'Disease', 'MESH:D008577', (391, 401)) ('oligodendroglioma', 'Disease', 'MESH:D009837', (403, 420)) ('testicular seminoma', 'Phenotype', 'HP:0100617', (354, 373)) ('adenocarcinoma', 'Disease', (319, 333)) ('breast carcinoma', 'Disease', 'MESH:D001943', (243, 259)) ('testicular seminoma', 'Disease', (354, 373)) ('pancreatic neuroendocrine tumor', 'Disease', 'MESH:D018358', (90, 121)) ('ovarian carcinomas', 'Disease', (291, 309)) ('carcinomas', 'Phenotype', 'HP:0030731', (299, 309)) ('ovarian carcinomas', 'Disease', 'MESH:D010051', (291, 309)) ('oligodendroglioma', 'Disease', (403, 420)) ('carcinoma', 'Phenotype', 'HP:0030731', (250, 259)) ('esophageal cancer', 'Disease', 'MESH:D004938', (261, 278)) ('adenomatoid tumor', 'Disease', 'MESH:D018254', (180, 197)) ('polyps', 'Disease', (428, 434)) ('cancer', 'Phenotype', 'HP:0002664', (235, 241)) ('melanoma', 'Disease', 'MESH:D008545', (220, 228)) ('ganglioneuroma', 'Disease', 'MESH:D005729', (164, 178)) 91999 31372201 Both genetic alterations and epigenetic changes (methylation) of this gene are considered as an important modification in endocrine malignancies formation. ('endocrine malignancies', 'Disease', (122, 144)) ('endocrine malignancies', 'Disease', 'MESH:D009369', (122, 144)) ('modification', 'Reg', (106, 118)) ('genetic alterations', 'Var', (5, 24)) ('endocrine malignancies', 'Phenotype', 'HP:0100568', (122, 144)) ('epigenetic changes', 'Var', (29, 47)) 92064 25873086 Superiority of [68Ga]-DOTATATE PET/CT to other functional imaging modalities in the localization of SDHB-associated metastatic pheochromocytoma and paraganglioma Patients with succinate dehydrogenase subunit B (SDHB) mutation-related pheochromocytoma/paraganglioma (PHEO/PGL) are at a higher risk for metastatic disease than other hereditary PHEOs/PGLs. ('paraganglioma', 'Disease', 'MESH:D010235', (148, 161)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (234, 264)) ('paraganglioma', 'Disease', (251, 264)) ('mutation-related', 'Var', (217, 233)) ('SDHB', 'Gene', '6390', (100, 104)) ('paraganglioma', 'Disease', 'MESH:D010235', (251, 264)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (234, 250)) ('SDHB', 'Gene', '6390', (211, 215)) ('paraganglioma', 'Phenotype', 'HP:0002668', (148, 161)) ('pheochromocytoma', 'Disease', (234, 250)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (234, 250)) ('SDHB', 'Gene', (100, 104)) ('metastatic disease', 'Disease', (301, 319)) ('SDHB', 'Gene', (211, 215)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (176, 209)) ('paraganglioma', 'Phenotype', 'HP:0002668', (251, 264)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (127, 143)) ('PHEOs', 'Chemical', '-', (342, 347)) ('pheochromocytoma/paraganglioma', 'Disease', (234, 264)) ('pheochromocytoma', 'Disease', (127, 143)) ('succinate dehydrogenase subunit B', 'Gene', (176, 209)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (127, 143)) ('paraganglioma', 'Disease', (148, 161)) ('Patients', 'Species', '9606', (162, 170)) 92068 25873086 [68Ga]-DOTATATE PET/CT demonstrated a lesion-based detection rate of 98.6% (95% confidence interval (CI) 96.5% to 99.5%), [18F]-FDG, [18F]-FDOPA, [18F]-FDA PET/CT, and CT/MRI showed detection rates of 85.8% (CI 81.3% to 89.4%) (p<0.01), 61.4% (CI 55.6% to 66.9%) (p<0.01), 51.9% (CI 46.1% to 57.7%) (p<0.01), and 84.8% (CI 80.0% to 88.5%) (p<0.01), respectively. ('18F]-FDA', 'Chemical', '-', (147, 155)) ('CT/MRI', 'Gene', '78996', (168, 174)) ('[18F]-FDOPA', 'Var', (133, 144)) ('CT/MRI', 'Gene', (168, 174)) ('[18F]-FDG', 'Var', (122, 131)) ('[18F]-FDA', 'Var', (146, 155)) (']-DOTATATE', 'Chemical', '-', (5, 15)) ('[18F]-FDOPA', 'Chemical', 'MESH:C043437', (133, 144)) 92069 25873086 [68Ga]-DOTATATE PET/CT showed a significantly superior detection rate compared to all other functional and anatomical imaging modalities and may represent the preferred future imaging modality in the evaluation of SDHB-related metastatic PHEO/PGL. ('SDHB', 'Gene', '6390', (214, 218)) ('superior', 'PosReg', (46, 54)) ('SDHB', 'Gene', (214, 218)) ('detection', 'MPA', (55, 64)) ('[68Ga]-DOTATATE', 'Var', (0, 15)) ('metastatic PHEO/PGL', 'Disease', (227, 246)) (']-DOTATATE', 'Chemical', '-', (5, 15)) 92072 25873086 In recent years, gene mutations encoding the 4 subunits of the succinate dehydrogenase (SDH) complex, fumarate hydratase (FH), MYC-associated factor X (MAX), and hypoxia-inducible factor 2alpha (HIF2A) have been evaluated and often found to be associated with the presence of multiple and metastatic PHEOs/PGLs. ('SDH', 'Gene', (88, 91)) ('fumarate hydratase', 'Gene', '2271', (102, 120)) ('MYC-associated factor X', 'Gene', (127, 150)) ('HIF2A', 'Gene', '2034', (195, 200)) ('fumarate hydratase', 'Gene', (102, 120)) ('succinate dehydrogenase', 'Gene', '6390', (63, 86)) ('hypoxia-inducible factor 2alpha', 'Gene', '2034', (162, 193)) ('associated with', 'Reg', (244, 259)) ('succinate dehydrogenase', 'Gene', (63, 86)) ('HIF2A', 'Gene', (195, 200)) ('mutations', 'Var', (22, 31)) ('MAX', 'Gene', (152, 155)) ('MAX', 'Gene', '4149', (152, 155)) ('SDH', 'Gene', '6390', (88, 91)) ('FH', 'Gene', '2271', (122, 124)) ('PHEOs', 'Chemical', '-', (300, 305)) ('MYC-associated factor X', 'Gene', '4149', (127, 150)) ('hypoxia-inducible factor 2alpha', 'Gene', (162, 193)) 92073 25873086 More than 40% of metastatic PHEOs/PGLs are related to succinate dehydrogenase subunit B (SDHB) mutation carriers, who are at high risk for developing metastatic disease. ('PHEOs', 'Chemical', '-', (28, 33)) ('related', 'Reg', (43, 50)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (54, 87)) ('SDHB', 'Gene', '6390', (89, 93)) ('metastatic PHEOs/PGLs', 'Disease', (17, 38)) ('succinate dehydrogenase subunit B', 'Gene', (54, 87)) ('SDHB', 'Gene', (89, 93)) ('mutation', 'Var', (95, 103)) 92077 25873086 However, at least 50% of patients with metastatic PHEOs/PGLs, especially those with SDHB mutations, do not benefit from [131I]-MIBG treatment due to a lack of the norepinephrine transporter system, resulting in suboptimal or no [131I]-MIBG-uptake. ('norepinephrine transporter', 'Gene', (163, 189)) ('PHEOs', 'Chemical', '-', (50, 55)) ('lack', 'NegReg', (151, 155)) ('norepinephrine transporter', 'Gene', '6530', (163, 189)) ('SDHB', 'Gene', '6390', (84, 88)) ('131I', 'Chemical', 'MESH:C000614965', (121, 125)) ('SDHB', 'Gene', (84, 88)) ('suboptimal', 'MPA', (211, 221)) ('patients', 'Species', '9606', (25, 33)) ('MIBG', 'Chemical', 'MESH:D019797', (235, 239)) ('mutations', 'Var', (89, 98)) ('131I', 'Chemical', 'MESH:C000614965', (229, 233)) ('men', 'Species', '9606', (137, 140)) ('MIBG', 'Chemical', 'MESH:D019797', (127, 131)) ('[131I]-MIBG-uptake', 'MPA', (228, 246)) 92080 25873086 Compared to [111In]-DTPA-octreotide (Octreoscan), which is used for SSTR scintigraphy, the newly developed DOTA-peptides such as DOTA(0)-Tyr(3)-octreotate (DOTATATE), DOTA(0)-Phe(1)-Tyr(3)-octreotide (DOTATOC), and DOTA(1)-Nal(3)-octreotide (DOTANOC) bind to SSTR expressing tumors much more effectively. ('DOTA', 'Var', (215, 219)) ('DOTA(1)-Nal(3)-octreotide', 'Chemical', '-', (215, 240)) ('tumor', 'Phenotype', 'HP:0002664', (275, 280)) ('DOTANOC', 'Chemical', '-', (242, 249)) ('tumors', 'Disease', (275, 281)) ('tumors', 'Phenotype', 'HP:0002664', (275, 281)) ('DOTA(0)-Tyr(3)-octreotate', 'Chemical', '-', (129, 154)) ('tumors', 'Disease', 'MESH:D009369', (275, 281)) ('SSTR expressing', 'Gene', (259, 274)) ('DOTATATE', 'Chemical', '-', (156, 164)) ('DOTATOC', 'Chemical', 'MESH:C106246', (201, 208)) ('[111In]-DTPA-octreotide', 'Chemical', '-', (12, 35)) ('DOTA(0)-Phe(1)-Tyr(3)-octreotide', 'Chemical', 'MESH:C106246', (167, 199)) ('bind', 'Interaction', (251, 255)) ('DOTA-peptides', 'Chemical', '-', (107, 120)) 92082 25873086 Increased expression of SSTR2A and SSTR3 was recently shown in PHEOs/PGLs with SDH deficiency, including SDHB mutations. ('SDHB', 'Gene', '6390', (105, 109)) ('mutations', 'Var', (110, 119)) ('SSTR3', 'Gene', (35, 40)) ('PHEOs', 'Chemical', '-', (63, 68)) ('SDHB', 'Gene', (105, 109)) ('SSTR2', 'Gene', '6752', (24, 29)) ('Increased', 'PosReg', (0, 9)) ('SDH deficiency', 'Disease', 'MESH:D007153', (79, 93)) ('SDH deficiency', 'Disease', (79, 93)) ('SSTR3', 'Gene', '6753', (35, 40)) ('SSTR2', 'Gene', (24, 29)) 92101 25873086 All 17 patients underwent [68Ga]-DOTATATE, [18F]-FDG PET/CT scanning, and CT/MRI, with 16 also receiving [18F]-FDOPA and [18F]-FDA PET/CT scans. ('CT/MRI', 'Gene', (74, 80)) ('patients', 'Species', '9606', (7, 15)) ('18F]-FDA', 'Chemical', '-', (122, 130)) (']-DOTATATE', 'Chemical', '-', (31, 41)) ('[68Ga]-DOTATATE', 'Var', (26, 41)) ('CT/MRI', 'Gene', '78996', (74, 80)) ('[18F]-FDG', 'Var', (43, 52)) ('[18F]-FDOPA', 'Chemical', 'MESH:C043437', (105, 116)) 92116 25873086 Significantly more lesions were identified on [68Ga]-DOTATATE PET/CT compared to all other used functional imaging modalities and CT/MRI (two-sided p<0.01 for each imaging modality compared to [68Ga]-DOTATATE PET/CT; corresponding cross tables in Supplemental Figure 1). ('[68Ga]-DOTATATE', 'Var', (46, 61)) (']-DOTATATE', 'Chemical', '-', (51, 61)) (']-DOTATATE', 'Chemical', '-', (198, 208)) ('more', 'PosReg', (14, 18)) ('CT/MRI', 'Gene', '78996', (130, 136)) ('men', 'Species', '9606', (253, 256)) ('CT/MRI', 'Gene', (130, 136)) 92117 25873086 Lesion-based findings on [68Ga]-DOTATATE PET/CT compared to all other used functional imaging modalities and CT/MRI are summarized and outlined in Tables 2 and 3 as well as in Figure 1. ('CT/MRI', 'Gene', '78996', (109, 115)) ('[68Ga]-DOTATATE', 'Var', (25, 40)) (']-DOTATATE', 'Chemical', '-', (30, 40)) ('CT/MRI', 'Gene', (109, 115)) 92120 25873086 Three bone lesions, which were positive on [18F]-FDA and [18F]-FDG PET/CT, and one lung lesion, which was positive on [18F]-FDG PET/CT and anatomical imaging, were not identified by [68Ga]-DOTATATE PET/CT. ('lung lesion', 'Disease', (83, 94)) ('[18F]-FDA', 'Var', (43, 52)) ('bone lesions', 'Disease', 'MESH:D001847', (6, 18)) (']-DOTATATE', 'Chemical', '-', (187, 197)) ('bone lesions', 'Disease', (6, 18)) ('18F]-FDA', 'Chemical', '-', (44, 52)) ('[18F]-FDG', 'Var', (57, 66)) ('lung lesion', 'Disease', 'MESH:D008171', (83, 94)) 92121 25873086 A lesion-based evaluation excluding the patient who only received [68Ga]-DOTATATE, [18F]-FDG PET/CT, and CT/MRI did not lead to any statistical change. ('patient', 'Species', '9606', (40, 47)) ('CT/MRI', 'Gene', (105, 111)) ('[18F]-FDG', 'Var', (83, 92)) (']-DOTATATE', 'Chemical', '-', (71, 81)) ('CT/MRI', 'Gene', '78996', (105, 111)) ('[68Ga]-DOTATATE', 'Var', (66, 81)) 92125 25873086 Per patient detection rates of [68Ga]-DOTATATE, [18F]-FDG, [18F]-FDOPA, [18F]-FDA PET/CT and CT/MRI were 100% (17 out of 17 patients (17/17)), CI 81.6% to 100%, 100% (17/17), CI 81.6% to 100%, 87.5% (14/16), CI 64.0% to 96.5%, 81.3% (13/16), CI 57.0% to 93.4% and 100 % (17/17), CI 81.6% to 100%, respectively. ('[18F]-FDOPA', 'Chemical', 'MESH:C043437', (59, 70)) ('patient', 'Species', '9606', (4, 11)) ('CT/MRI', 'Gene', '78996', (93, 99)) ('[18F]-FDG', 'Var', (48, 57)) ('[18F]-FDA', 'Var', (72, 81)) ('[18F]-FDOPA', 'Var', (59, 70)) ('18F]-FDA', 'Chemical', '-', (73, 81)) ('CT/MRI', 'Gene', (93, 99)) ('patient', 'Species', '9606', (124, 131)) (']-DOTATATE', 'Chemical', '-', (36, 46)) ('[68Ga]-DOTATATE', 'Var', (31, 46)) ('patients', 'Species', '9606', (124, 132)) 92126 25873086 The per region detection rate for [68Ga]-DOTATATE was 100%, identifying 42 out of 42 regions (42/42), CI 91.6% to 100%, 97.6% for [18F]-FDG (41/42), CI 87.7% to 99.6%, 65.9% for [18F]-FDOPA (27/41), CI 50.6% to 78.4%, 58.4% for [18F]-FDA PET/CT (24/41), CI 43.4% to 72.2%, and 95.2% for CT/MRI (40/42), CI 84.2% to 98.7%. ('[18F]-FDOPA', 'Chemical', 'MESH:C043437', (178, 189)) (']-DOTATATE', 'Chemical', '-', (39, 49)) ('CT/MRI', 'Gene', '78996', (287, 293)) ('18F]-FDA', 'Chemical', '-', (229, 237)) ('[18F]-FDA', 'Var', (228, 237)) ('CT/MRI', 'Gene', (287, 293)) 92127 25873086 A PET-imaging example comparing [68Ga]-DOTATATE, [18F]-FDG, [18F]-FDOPA, and [18F]-FDA PET/CT is shown in Figure 2. ('[18F]-FDOPA', 'Var', (60, 71)) ('[68Ga]-DOTATATE', 'Var', (32, 47)) (']-DOTATATE', 'Chemical', '-', (37, 47)) ('18F]-FDA', 'Chemical', '-', (78, 86)) ('[18F]-FDOPA', 'Chemical', 'MESH:C043437', (60, 71)) 92129 25873086 [68Ga]-DOTATATE PET/CT demonstrated a lesion-based detection rate of 98.6% (CI 96.5% to 99.5%), which was significantly superior to all other imaging modalities in this study, thus demonstrating the utility of this modality in localizing tumors in SDHB-related PHEO/PGL. ('SDHB', 'Gene', (248, 252)) ('tumor', 'Phenotype', 'HP:0002664', (238, 243)) ('tumors', 'Phenotype', 'HP:0002664', (238, 244)) ('tumors', 'Disease', 'MESH:D009369', (238, 244)) ('tumors', 'Disease', (238, 244)) ('[68Ga]-DOTATATE', 'Var', (0, 15)) ('SDHB', 'Gene', '6390', (248, 252)) (']-DOTATATE', 'Chemical', '-', (5, 15)) 92132 25873086 [18F]-FDA as well as [123I]-MIBG specifically target catecholamine synthesis, storage, and secretion pathways, and both enter the cell via the norepinephrine transporter. ('target', 'Reg', (46, 52)) ('[18F]-FDA', 'Var', (0, 9)) ('norepinephrine transporter', 'Gene', '6530', (143, 169)) ('catecholamine synthesis', 'MPA', (53, 76)) ('storage', 'MPA', (78, 85)) ('secretion pathways', 'MPA', (91, 109)) ('norepinephrine transporter', 'Gene', (143, 169)) ('catecholamine', 'Chemical', 'MESH:D002395', (53, 66)) ('18F]-FDA', 'Chemical', '-', (1, 9)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (21, 32)) ('enter', 'Reg', (120, 125)) ('[123I]-MIBG', 'Var', (21, 32)) 92133 25873086 In this study, [18F]-FDA had a low lesion-based detection rate of 51.9% (CI 46.1% to 57.7%), which might be explained by tumor dedifferentiation associated with loss of the norepinephrine transporter in these patients. ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('norepinephrine transporter', 'Gene', (173, 199)) ('lesion-based detection', 'MPA', (35, 57)) ('norepinephrine transporter', 'Gene', '6530', (173, 199)) ('tumor', 'Disease', (121, 126)) ('patients', 'Species', '9606', (209, 217)) ('low', 'NegReg', (31, 34)) ('18F]-FDA', 'Chemical', '-', (16, 24)) ('[18F]-FDA', 'Var', (15, 24)) ('tumor', 'Disease', 'MESH:D009369', (121, 126)) 92134 25873086 This is supported by the reported [123I]-MIBG negativity of more than 50% of patients in SDHB mutation-associated PHEOs/PGLs. ('mutation-associated', 'Var', (94, 113)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (34, 45)) ('patients', 'Species', '9606', (77, 85)) ('SDHB', 'Gene', '6390', (89, 93)) ('PHEOs', 'Chemical', '-', (114, 119)) ('SDHB', 'Gene', (89, 93)) ('PHEOs/PGLs', 'Disease', (114, 124)) 92136 25873086 [18F]-FDOPA targets cells via the amino acid transporter system and has demonstrated excellent results in patients with SDHx mutation-related head and neck PGLs. ('[18F]-FDOPA', 'Chemical', 'MESH:C043437', (0, 11)) ('SDHx', 'Chemical', '-', (120, 124)) ('SDHx', 'Gene', (120, 124)) ('patients', 'Species', '9606', (106, 114)) ('mutation-related', 'Var', (125, 141)) 92141 25873086 Further, it is known that a mutation in the succinate dehydrogenase complex II subunit B can lead to a downregulation or loss of succinate dehydrogenase enzyme activity in the Krebs cycle, resulting in an upregulation of hypoxic angiogenetic pathways via HIFs, which force tumor cells to shift from oxidative phosphorylation to aerobic glycolysis (Warburg effect). ('succinate dehydrogenase', 'Gene', (44, 67)) ('oxidative phosphorylation', 'MPA', (299, 324)) ('succinate dehydrogenase', 'Gene', (129, 152)) ('loss', 'NegReg', (121, 125)) ('upregulation', 'PosReg', (205, 217)) ('tumor', 'Disease', 'MESH:D009369', (273, 278)) ('activity', 'MPA', (160, 168)) ('downregulation', 'NegReg', (103, 117)) ('mutation', 'Var', (28, 36)) ('hypoxic angiogenetic pathways', 'Pathway', (221, 250)) ('Krebs', 'Chemical', '-', (176, 181)) ('tumor', 'Phenotype', 'HP:0002664', (273, 278)) ('tumor', 'Disease', (273, 278)) ('succinate dehydrogenase', 'Gene', '6390', (44, 67)) ('succinate dehydrogenase', 'Gene', '6390', (129, 152)) 92142 25873086 Currently, [18F]-FDG PET/CT is recommended as the functional imaging technique of choice for patients with metastatic PHEOs/PGLs, including their follow-up and assessment of treatment-related responses. ('men', 'Species', '9606', (179, 182)) ('[18F]-FDG', 'Var', (11, 20)) ('men', 'Species', '9606', (166, 169)) ('men', 'Species', '9606', (36, 39)) ('patients', 'Species', '9606', (93, 101)) ('metastatic PHEOs/PGLs', 'Disease', (107, 128)) ('PHEOs', 'Chemical', '-', (118, 123)) 92144 25873086 [68Ga]-DOTATATE, which is known to have an approximately 10-fold higher affinity for SSTR2 than [68Ga]-DOTATOC (which also has high affinity to SSTR5) and an approximately 100-fold higher affinity for SSTR2 than [111In]-DTPA-octreotide, has already shown excellent results in the imaging of SSTR2 expressing gastroenteropancreatic NETs, and PHEOs/PGLs are also known to overexpress predominantly SSTR2. ('[111In]-DTPA-octreotide', 'Chemical', '-', (212, 235)) ('SSTR5', 'Gene', '6755', (144, 149)) ('SSTR2', 'Gene', (201, 206)) ('affinity', 'MPA', (72, 80)) ('NETs', 'Phenotype', 'HP:0100634', (331, 335)) ('SSTR2', 'Gene', '6752', (201, 206)) ('SSTR2', 'Gene', (396, 401)) ('gastroenteropancreatic', 'Disease', 'MESH:C535650', (308, 330)) ('[68Ga]-DOTATATE', 'Var', (0, 15)) ('SSTR2', 'Gene', '6752', (396, 401)) ('gastroenteropancreatic', 'Disease', (308, 330)) ('DOTATOC', 'Chemical', 'MESH:C106246', (103, 110)) ('SSTR2', 'Gene', (291, 296)) ('SSTR2', 'Gene', (85, 90)) ('SSTR2', 'Gene', '6752', (291, 296)) ('SSTR2', 'Gene', '6752', (85, 90)) ('PHEOs', 'Chemical', '-', (341, 346)) ('SSTR5', 'Gene', (144, 149)) ('higher', 'PosReg', (65, 71)) (']-DOTATATE', 'Chemical', '-', (5, 15)) 92147 25873086 These have shown high sensitivities of [68Ga]-DOTATATE and [68Ga]-DOTATOC PET/CT, approaching or reaching 100%. ('sensitivities', 'MPA', (22, 35)) ('[68Ga]-DOTATATE', 'Var', (39, 54)) ('DOTATOC', 'Chemical', 'MESH:C106246', (66, 73)) ('[68Ga]-DOTATOC', 'Var', (59, 73)) (']-DOTATATE', 'Chemical', '-', (44, 54)) 92150 25873086 In the meanwhile, the high sensitivity of [68Ga]-DOTATATE PET/CT in SDHB-related metastatic PHEO/PGL suggests that these patients can be treated with cold SSTR analogs, including sandostatin LAR, lanreotide, or others. ('SDHB', 'Gene', '6390', (68, 72)) ('sandostatin LAR', 'Chemical', 'MESH:C541923', (179, 194)) ('metastatic PHEO/PGL', 'Disease', (81, 100)) ('[68Ga]-DOTATATE', 'Var', (42, 57)) ('SDHB', 'Gene', (68, 72)) (']-DOTATATE', 'Chemical', '-', (47, 57)) ('patients', 'Species', '9606', (121, 129)) 92155 25873086 Last, the high detection rate of [68Ga]-DOTATATE PET/CT in these patients also suggests that the high malignant potential and presumed dedifferentiation of metastatic PHEOs/PGLs in SDHB mutations apparently do not lead to a significant loss of SSTR expression. (']-DOTATATE', 'Chemical', '-', (38, 48)) ('PHEOs', 'Chemical', '-', (167, 172)) ('mutations', 'Var', (186, 195)) ('SDHB', 'Gene', '6390', (181, 185)) ('patients', 'Species', '9606', (65, 73)) ('SDHB', 'Gene', (181, 185)) 92159 25873086 In the current guidelines, which do not yet take PET imaging with [68Ga]-DOTA-peptides into consideration, [18F]-FDG is recommended as first-line functional imaging of SDHB-related PHEO/PGL. ('men', 'Species', '9606', (125, 128)) ('[18F]-FDG', 'Var', (107, 116)) ('SDHB', 'Gene', '6390', (168, 172)) ('DOTA-peptides', 'Chemical', '-', (73, 86)) ('SDHB', 'Gene', (168, 172)) 92163 25873086 In clinical settings of doubtful CT/MRI results, [68Ga]-DOTATATE might also be helpful, although potential false positive results could occur. ('CT/MRI', 'Gene', '78996', (33, 39)) (']-DOTATATE', 'Chemical', '-', (54, 64)) ('[68Ga]-DOTATATE', 'Var', (49, 64)) ('CT/MRI', 'Gene', (33, 39)) 92164 25873086 The more specific functional imaging studies like [18F]-FDOPA and [18F]-FDA PET/CT seem to harbor a higher risk for false negative results. ('[18F]-FDOPA', 'Chemical', 'MESH:C043437', (50, 61)) ('[18F]-FDOPA', 'Var', (50, 61)) ('18F]-FDA', 'Chemical', '-', (67, 75)) ('[18F]-FDA', 'Var', (66, 75)) 92167 25873086 Based on this imaging comparator, combined positive findings in functional and/or anatomical imaging studies on one hand cannot fully exclude false positive results (e.g., possible positive lesions in [68Ga]-DOTATATE PET/CT, [18F]-FDG-PET/CT, and/or CT/MRI related to inflammation or possible positive lesions in [68Ga]-DOTATATE PET/CT, [18F]-FDOPA PET/CT, and/or CT/MRI related to different neuroendocrine tumors). ('[68Ga]-DOTATATE', 'Var', (201, 216)) ('inflammation', 'Disease', 'MESH:D007249', (268, 280)) (']-DOTATATE', 'Chemical', '-', (206, 216)) ('CT/MRI', 'Gene', '78996', (364, 370)) ('inflammation', 'Disease', (268, 280)) ('CT/MRI', 'Gene', (364, 370)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (392, 413)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (392, 413)) ('tumor', 'Phenotype', 'HP:0002664', (407, 412)) (']-DOTATATE', 'Chemical', '-', (318, 328)) ('[18F]-FDOPA', 'Chemical', 'MESH:C043437', (337, 348)) ('CT/MRI', 'Gene', '78996', (250, 256)) ('tumors', 'Phenotype', 'HP:0002664', (407, 413)) ('neuroendocrine tumors', 'Disease', (392, 413)) ('CT/MRI', 'Gene', (250, 256)) 92169 25873086 In conclusion, although [18F]-FDG PET/CT is currently recommended as the functional imaging technique of choice in SDHB-related PHEOs/PGLs and our study is subject to certain limitations, we believe that our results may indicate a preference for [68Ga]-DOTATATE PET/CT in these patients, particularly in the detection of progressive metastatic disease, additional disease sites, and even early detection of metastatic disease. ('SDHB', 'Gene', '6390', (115, 119)) (']-DOTATATE', 'Chemical', '-', (251, 261)) ('[68Ga]-DOTATATE', 'Var', (246, 261)) ('SDHB', 'Gene', (115, 119)) ('patients', 'Species', '9606', (278, 286)) ('PHEOs', 'Chemical', '-', (128, 133)) ('men', 'Species', '9606', (59, 62)) 92173 25873086 This work focuses solely on the performance of [68Ga]-DOTA(0)-Tyr(3)-octreotate ([68Ga]-DOTATATE) PET/CT in patients with metastatic SDHB-related PHEOs/PGLs and demonstrates the superiority of [68Ga]-DOTATATE PET/CT in the detection of metastatic lesions in these patients, compared to all other and currently recommended functional imaging modalities. ('patients', 'Species', '9606', (108, 116)) ('[68Ga]-DOTATATE', 'Var', (193, 208)) (']-DOTATATE', 'Chemical', '-', (86, 96)) ('DOTA(0)-Tyr(3)-octreotate', 'Chemical', '-', (54, 79)) ('SDHB', 'Gene', '6390', (133, 137)) ('[68Ga]', 'Var', (47, 53)) ('metastatic', 'Disease', (122, 132)) (']-DOTATATE', 'Chemical', '-', (198, 208)) ('PHEOs', 'Chemical', '-', (146, 151)) ('SDHB', 'Gene', (133, 137)) ('patients', 'Species', '9606', (264, 272)) ('men', 'Species', '9606', (315, 318)) 92179 23360571 A primary retrocardiac paraganglioma catecholamine-productive was identified in an asymptomatic 49-year old female associated to familial pheochromocytoma-paraganglioma syndrome caused by germline mutation of the gen which codifies for the subunit B of succinate dehydrogenase enzyme (SDHB). ('paraganglioma', 'Phenotype', 'HP:0002668', (23, 36)) ('familial pheochromocytoma-paraganglioma syndrome', 'Disease', (129, 177)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (138, 154)) ('familial pheochromocytoma-paraganglioma syndrome', 'Disease', 'MESH:C531777', (129, 177)) ('retrocardiac paraganglioma', 'Disease', (10, 36)) ('succinate dehydrogenase enzyme', 'Gene', '6392', (253, 283)) ('germline mutation', 'Var', (188, 205)) ('associated', 'Reg', (115, 125)) ('retrocardiac paraganglioma', 'Disease', 'MESH:D010235', (10, 36)) ('SDHB', 'Gene', '6390', (285, 289)) ('caused by', 'Reg', (178, 187)) ('catecholamine', 'Chemical', 'MESH:D002395', (37, 50)) ('paraganglioma', 'Phenotype', 'HP:0002668', (155, 168)) ('succinate dehydrogenase enzyme', 'Gene', (253, 283)) ('SDHB', 'Gene', (285, 289)) 92193 23360571 Mutations of the genes which codify for the subunits D, A, C y B of succinate dehydrogenase enzyme (SDHD, SDHA, SDHC and SDHB) involved in the Krebs cycle can lead to tumorogenesis in chromaffin cells and they have been identified as causing familial adrenal pheochromocytoma and extra-adrenal paraganglioma; moreover, these tumors may also occur in the multiple endocrine neoplasia (MEN) syndrome type 2A and 2B, von Hippel-Lindau disease or von Recklinghausen's neurofibromatosis. ('tumors', 'Phenotype', 'HP:0002664', (325, 331)) ('SDHA', 'Gene', (106, 110)) ('SDHB', 'Gene', (121, 125)) ("von Recklinghausen's neurofibromatosis", 'Disease', (443, 481)) ('SDHA', 'Gene', '6389', (106, 110)) ('tumor', 'Phenotype', 'HP:0002664', (325, 330)) ('tumors', 'Disease', (325, 331)) ('SDHC', 'Gene', '6391', (112, 116)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (414, 439)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (259, 275)) ('occur', 'Reg', (341, 346)) ('Mutations', 'Var', (0, 9)) ('chromaffin', 'Chemical', '-', (184, 194)) ('succinate dehydrogenase enzyme', 'Gene', '6392', (68, 98)) ('extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (280, 307)) ('SDHD', 'Gene', '6392', (100, 104)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (464, 481)) ('tumor', 'Disease', (167, 172)) ('tumors', 'Disease', 'MESH:D009369', (325, 331)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (251, 275)) ('causing', 'Reg', (234, 241)) ('succinate dehydrogenase enzyme', 'Gene', (68, 98)) ("von Recklinghausen's neurofibromatosis", 'Disease', 'MESH:C537392', (443, 481)) ('von Hippel-Lindau disease', 'Disease', (414, 439)) ('tumor', 'Disease', 'MESH:D009369', (167, 172)) ('lead to', 'Reg', (159, 166)) ('SDHD', 'Gene', (100, 104)) ('tumor', 'Disease', (325, 330)) ('SDHB', 'Gene', '6390', (121, 125)) ('SDHC', 'Gene', (112, 116)) ('neoplasia', 'Phenotype', 'HP:0002664', (373, 382)) ('tumor', 'Disease', 'MESH:D009369', (325, 330)) ('extra-adrenal paraganglioma', 'Disease', (280, 307)) ('familial adrenal pheochromocytoma', 'Disease', 'MESH:C531777', (242, 275)) ('multiple endocrine neoplasia (MEN) syndrome type 2A', 'Disease', 'MESH:D018813', (354, 405)) ('tumor', 'Phenotype', 'HP:0002664', (167, 172)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (363, 382)) ('familial adrenal pheochromocytoma', 'Disease', (242, 275)) ('paraganglioma', 'Phenotype', 'HP:0002668', (294, 307)) 92198 23360571 We report a case of an asymptomatic 49-year old Caucasian female, with hereditary type 4 pheochromocytoma-paraganglioma syndrome caused by germline mutation (alanine-43-proline) of the gen which codifies for the subunit B of succinate dehydrogenase enzyme (SDHB) of the mitochondrial complex II. ('alanine-43-proline', 'Mutation', 'rs745559875', (158, 176)) ('alanine-43-proline', 'Var', (158, 176)) ('caused by', 'Reg', (129, 138)) ('succinate dehydrogenase enzyme', 'Gene', '6392', (225, 255)) ('pheochromocytoma-paraganglioma syndrome', 'Disease', 'MESH:D010673', (89, 128)) ('SDHB', 'Gene', '6390', (257, 261)) ('pheochromocytoma-paraganglioma syndrome', 'Disease', (89, 128)) ('succinate dehydrogenase enzyme', 'Gene', (225, 255)) ('SDHB', 'Gene', (257, 261)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (89, 105)) ('paraganglioma', 'Phenotype', 'HP:0002668', (106, 119)) 92199 23360571 She had a family history of extra-adrenal paraganglioma: genetic testing had revealed the gen SDHB mutation for eight first- and second-degree relatives and carotid body paraganglioma had been resected in three of them. ('paraganglioma', 'Disease', 'MESH:D010235', (170, 183)) ('revealed', 'Reg', (77, 85)) ('SDHB', 'Gene', (94, 98)) ('paraganglioma', 'Phenotype', 'HP:0002668', (42, 55)) ('mutation', 'Var', (99, 107)) ('paraganglioma', 'Disease', 'MESH:D010235', (42, 55)) ('extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (28, 55)) ('paraganglioma', 'Phenotype', 'HP:0002668', (170, 183)) ('paraganglioma', 'Disease', (42, 55)) ('gen', 'Var', (90, 93)) ('paraganglioma', 'Disease', (170, 183)) ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (157, 183)) ('SDHB', 'Gene', '6390', (94, 98)) ('extra-adrenal paraganglioma', 'Disease', (28, 55)) 92231 23360571 These syndromes involve a group of rare autosomal dominant disorders affecting sympathetic and parasympathetic paraganglia, caused by germline mutations of the genes SDHB, SDHC and SDHD, although some of these mutations can also be detected for patients with apparently sporadic pheochromocytomas. ('caused by', 'Reg', (124, 133)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (279, 295)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (279, 296)) ('SDHB', 'Gene', '6390', (166, 170)) ('patients', 'Species', '9606', (245, 253)) ('SDHB', 'Gene', (166, 170)) ('pheochromocytomas', 'Disease', (279, 296)) ('SDHC', 'Gene', (172, 176)) ('autosomal dominant disorders', 'Disease', 'MESH:D030342', (40, 68)) ('SDHD', 'Gene', (181, 185)) ('SDHD', 'Gene', '6392', (181, 185)) ('SDHC', 'Gene', '6391', (172, 176)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (279, 296)) ('autosomal dominant disorders', 'Disease', (40, 68)) ('mutations', 'Var', (143, 152)) 92233 23360571 Location in the heart is not particularly associated with familial syndromes, although malignant predisposition is increased with the SDHB mutation. ('increased', 'PosReg', (115, 124)) ('SDHB', 'Gene', '6390', (134, 138)) ('mutation', 'Var', (139, 147)) ('SDHB', 'Gene', (134, 138)) 92255 23360571 The SDHB mutation was detected in two patients of the serie. ('mutation', 'Var', (9, 17)) ('SDHB', 'Gene', (4, 8)) ('SDHB', 'Gene', '6390', (4, 8)) ('patients', 'Species', '9606', (38, 46)) 92260 23360571 Our case is relevant in that there were no classic signs of catecholamine excess despite to be a functioning tumor and it illustrates successful management of a benign left atrial primary paraganglioma associated with SDHB mutation, including direct ligation of feeding vessels of the tumor, complete excision and subsequent reinforcement of the LA, without evidence of recurrence at short-term follow-up. ('paraganglioma', 'Phenotype', 'HP:0002668', (188, 201)) ('tumor', 'Disease', 'MESH:D009369', (285, 290)) ('tumor', 'Phenotype', 'HP:0002664', (285, 290)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (60, 80)) ('SDHB', 'Gene', '6390', (218, 222)) ('atrial primary paraganglioma', 'Disease', 'MESH:D010235', (173, 201)) ('SDHB', 'Gene', (218, 222)) ('associated', 'Reg', (202, 212)) ('tumor', 'Disease', (285, 290)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('mutation', 'Var', (223, 231)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('catecholamine', 'Chemical', 'MESH:D002395', (60, 73)) ('atrial primary paraganglioma', 'Disease', (173, 201)) ('tumor', 'Disease', (109, 114)) 92365 33362715 Genetic and Clinical Profiles of Pheochromocytoma and Paraganglioma: A Single Center Study Pheochromocytoma/paraganglioma (PPGL) has a high genetic heterogeneity with 40% germline variants in known pathogenic genes. ('Pheochromocytoma and Paraganglioma', 'Disease', 'MESH:D010673', (33, 67)) ('Pheochromocytoma/paraganglioma', 'Disease', (91, 121)) ('PPGL', 'Chemical', '-', (123, 127)) ('Pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (91, 121)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (54, 67)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (91, 107)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (33, 49)) ('PGL', 'Phenotype', 'HP:0002668', (124, 127)) ('paraganglioma', 'Phenotype', 'HP:0002668', (108, 121)) ('germline variants', 'Var', (171, 188)) 92366 33362715 To detect the genetic and clinical profile of Chinese PPGL patients, we examined the variants of 12 known germline pathogenic genes (SDHA, SDHB, SDHC, SDHD, SDHAF2, FH, VHL, RET, NF1, MAX, TMEM127, and KIF1B) by next-generation sequencing and Sanger sequencing in 314 Chinese PPGL subjects. ('variants', 'Var', (85, 93)) ('KIF1B', 'Gene', (202, 207)) ('PGL', 'Phenotype', 'HP:0002668', (55, 58)) ('SDHD', 'Gene', '6392', (151, 155)) ('RET', 'Gene', '5979', (174, 177)) ('SDHC', 'Gene', '6391', (145, 149)) ('PGL', 'Phenotype', 'HP:0002668', (277, 280)) ('SDHD', 'Gene', (151, 155)) ('patients', 'Species', '9606', (59, 67)) ('NF1', 'Gene', '4763', (179, 182)) ('VHL', 'Gene', (169, 172)) ('SDHA', 'Gene', (133, 137)) ('TMEM127', 'Gene', (189, 196)) ('SDHA', 'Gene', (157, 161)) ('PPGL', 'Chemical', '-', (276, 280)) ('SDHB', 'Gene', '6390', (139, 143)) ('PPGL', 'Chemical', '-', (54, 58)) ('KIF1B', 'Gene', '23095', (202, 207)) ('RET', 'Gene', (174, 177)) ('SDHA', 'Gene', '6389', (133, 137)) ('SDHC', 'Gene', (145, 149)) ('SDHA', 'Gene', '6389', (157, 161)) ('NF1', 'Gene', (179, 182)) ('SDHAF2', 'Gene', '54949', (157, 163)) ('TMEM127', 'Gene', '55654', (189, 196)) ('SDHAF2', 'Gene', (157, 163)) ('VHL', 'Gene', '7428', (169, 172)) ('SDHB', 'Gene', (139, 143)) 92367 33362715 Twenty nine percent of Chinese PPGL patients had germline variants and SDHB was the most frequently mutated (14.6%). ('germline variants', 'Var', (49, 66)) ('patients', 'Species', '9606', (36, 44)) ('SDHB', 'Gene', '6390', (71, 75)) ('SDHB', 'Gene', (71, 75)) ('PGL', 'Phenotype', 'HP:0002668', (32, 35)) ('PPGL', 'Chemical', '-', (31, 35)) 92368 33362715 The most frequent SDHB variants were in exon 2, exon 7, and IVS 7. ('variants', 'Var', (23, 31)) ('SDHB', 'Gene', '6390', (18, 22)) ('frequent', 'Reg', (9, 17)) ('SDHB', 'Gene', (18, 22)) 92369 33362715 Pathogenic variants were more likely to occur in metastatic PPGL patients, paragangliomas, and patients under 30, with the ratio being 50.7% (35/69), 35.9% (56/156), and 49.5% (52/105), respectively. ('metastatic PPGL', 'Disease', (49, 64)) ('paragangliomas', 'Phenotype', 'HP:0002668', (75, 89)) ('paraganglioma', 'Phenotype', 'HP:0002668', (75, 88)) ('PGL', 'Phenotype', 'HP:0002668', (61, 64)) ('patients', 'Species', '9606', (95, 103)) ('PPGL', 'Chemical', '-', (60, 64)) ('variants', 'Var', (11, 19)) ('paragangliomas', 'Disease', 'MESH:D010235', (75, 89)) ('patients', 'Species', '9606', (65, 73)) ('paragangliomas', 'Disease', (75, 89)) ('occur', 'Reg', (40, 45)) 92379 33362715 To know the profile of germline variants and genotype-phenotype correlation in Chinese PPGLs from a single center, we examined the variants in 12 known germline pathogenic genes (SDHA, SDHB, SDHC, SDHD, SDHAF2, FH, VHL, RET, NF1, MAX, TMEM127, and KIF1B) in 314 Chinese PPGLs from a single center. ('SDHB', 'Gene', (185, 189)) ('PGL', 'Phenotype', 'HP:0002668', (88, 91)) ('KIF1B', 'Gene', (248, 253)) ('VHL', 'Gene', '7428', (215, 218)) ('variants', 'Var', (131, 139)) ('SDHC', 'Gene', '6391', (191, 195)) ('PPGLs', 'Chemical', '-', (87, 92)) ('RET', 'Gene', '5979', (220, 223)) ('PPGLs', 'Chemical', '-', (270, 275)) ('SDHD', 'Gene', '6392', (197, 201)) ('NF1', 'Gene', '4763', (225, 228)) ('KIF1B', 'Gene', '23095', (248, 253)) ('TMEM127', 'Gene', (235, 242)) ('SDHC', 'Gene', (191, 195)) ('SDHB', 'Gene', '6390', (185, 189)) ('SDHAF2', 'Gene', '54949', (203, 209)) ('SDHAF2', 'Gene', (203, 209)) ('SDHA', 'Gene', (179, 183)) ('SDHA', 'Gene', (203, 207)) ('VHL', 'Gene', (215, 218)) ('NF1', 'Gene', (225, 228)) ('SDHD', 'Gene', (197, 201)) ('PGL', 'Phenotype', 'HP:0002668', (271, 274)) ('RET', 'Gene', (220, 223)) ('TMEM127', 'Gene', '55654', (235, 242)) ('SDHA', 'Gene', '6389', (179, 183)) ('SDHA', 'Gene', '6389', (203, 207)) 92380 33362715 Our study shows that twenty nine percent of Chinese PPGLs had germline variants and SDHB was the most frequently mutated (14.6%). ('PGL', 'Phenotype', 'HP:0002668', (53, 56)) ('SDHB', 'Gene', '6390', (84, 88)) ('germline variants', 'Var', (62, 79)) ('SDHB', 'Gene', (84, 88)) ('PPGLs', 'Chemical', '-', (52, 57)) 92391 33362715 As for patients with clinically-diagnosed hereditary syndromes, such as multiple endocrine neoplasia Type 2 (MEN2) and Von Hippel-Lindau (VHL) disease, hot spots (10, 11, 16 exons) of RET (NM_020630.4) and all exons, including intro-exon junctions of VHL (NM_000551.3), were amplified and sequenced, respectively. ('multiple endocrine neoplasia Type', 'Disease', 'MESH:D009377', (72, 105)) ('VHL', 'Gene', '7428', (138, 141)) ('RET', 'Gene', (184, 187)) ('Von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (119, 150)) ('hereditary syndromes', 'Disease', (42, 62)) ('RET', 'Gene', '5979', (184, 187)) ('hereditary syndromes', 'Disease', 'MESH:D061325', (42, 62)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (81, 100)) ('VHL', 'Gene', (251, 254)) ('multiple endocrine neoplasia Type', 'Disease', (72, 105)) ('neoplasia', 'Phenotype', 'HP:0002664', (91, 100)) ('NM_020630.4', 'Var', (189, 200)) ('VHL', 'Gene', '7428', (251, 254)) ('VHL', 'Gene', (138, 141)) ('patients', 'Species', '9606', (7, 15)) 92392 33362715 For all the patients except those whose variants were detected by the aforementioned Sanger sequencing, next-generation sequencing covering SDHA (NM_004168.4), SDHB (NM_003000.3), SDHC (NM_003001.5), SDHD (NM_003002.4), SDHAF2 (NM_017841.4), VHL (NM_000551.3), RET (NM_020630.4), MAX (NM_002382.5), TEMEM127 (NM_017849.4), FH (NM_000143.4), NF1 (NM_001042492.3), and KIF1B (NM_015074.3) was performed to examine the potential pathogenic germline variations. ('NF1', 'Gene', '4763', (341, 344)) ('SDHD', 'Gene', '6392', (200, 204)) ('SDHB', 'Gene', (160, 164)) ('SDHC', 'Gene', (180, 184)) ('patients', 'Species', '9606', (12, 20)) ('SDHD', 'Gene', (200, 204)) ('VHL', 'Gene', (242, 245)) ('NF1', 'Gene', (341, 344)) ('KIF1B', 'Gene', (367, 372)) ('RET', 'Gene', '5979', (261, 264)) ('variants', 'Var', (40, 48)) ('SDHA', 'Gene', (220, 224)) ('VHL', 'Gene', '7428', (242, 245)) ('RET', 'Gene', (261, 264)) ('SDHC', 'Gene', '6391', (180, 184)) ('SDHA', 'Gene', '6389', (220, 224)) ('SDHA', 'Gene', (140, 144)) ('SDHB', 'Gene', '6390', (160, 164)) ('SDHAF2', 'Gene', '54949', (220, 226)) ('KIF1B', 'Gene', '23095', (367, 372)) ('SDHAF2', 'Gene', (220, 226)) ('SDHA', 'Gene', '6389', (140, 144)) 92396 33362715 Screening for large deletions of SDHx was carried out using the P226-D1 Multiplex Ligation dependent Probe Amplification (MLPA) kit, following the manufacturer's protocol (MRC-Holland, Amsterdam, Netherlands). ('MRC', 'CellLine', 'CVCL:0440', (172, 175)) ('deletions', 'Var', (20, 29)) ('SDHx', 'Gene', (33, 37)) 92411 33362715 Deletions of SDHB gene were detected in the negative immunostaining sample, affecting exon 1. ('SDHB', 'Gene', '6390', (13, 17)) ('exon 1', 'MPA', (86, 92)) ('SDHB', 'Gene', (13, 17)) ('affecting', 'Reg', (76, 85)) ('Deletions', 'Var', (0, 9)) 92413 33362715 SDHB was the most commonly mutated gene in our series (46/93 variants, 49.5%) with a median age at diagnosis of 26. ('SDHB', 'Gene', '6390', (0, 4)) ('variants', 'Var', (61, 69)) ('SDHB', 'Gene', (0, 4)) 92414 33362715 Compared to sporadic PPGL, PPGL with SDHB variants were more likely to develop distant metastases or PGL (Table 3). ('metastases', 'Disease', (87, 97)) ('SDHB', 'Gene', '6390', (37, 41)) ('variants', 'Var', (42, 50)) ('metastases', 'Disease', 'MESH:D009362', (87, 97)) ('SDHB', 'Gene', (37, 41)) ('develop', 'PosReg', (71, 78)) ('PGL', 'Phenotype', 'HP:0002668', (28, 31)) ('PPGL', 'Chemical', '-', (21, 25)) ('PPGL', 'Chemical', '-', (27, 31)) ('PGL', 'CPA', (101, 104)) ('PGL', 'Phenotype', 'HP:0002668', (101, 104)) ('PGL', 'Phenotype', 'HP:0002668', (22, 25)) 92415 33362715 In our cohort, SDHB variants were mainly located in exon 2 and exon 7, which accounted for 26/46 (56.5%) of all SDHB variants. ('SDHB', 'Gene', '6390', (15, 19)) ('variants', 'Var', (20, 28)) ('SDHB', 'Gene', (15, 19)) ('SDHB', 'Gene', '6390', (112, 116)) ('variants', 'Var', (117, 125)) ('SDHB', 'Gene', (112, 116)) 92416 33362715 Among them, codon 46 in exon 2 and codons 230 and 242 in exon 7 were hot variant sites, and were found in 8, 5, and 4 patients, respectively. ('codon 46', 'Var', (12, 20)) ('found', 'Reg', (97, 102)) ('patients', 'Species', '9606', (118, 126)) ('codons 230', 'Var', (35, 45)) 92417 33362715 Besides, variants in IVS7 (c.765+1G>A and c.766-1G>A) were also common in our study and the rate was 6/46 (13.0%).Four unrelated individuals had a family history of PPGL. ('c.766-1G>A', 'Var', (42, 52)) ('PPGL', 'Disease', (165, 169)) ('c.766-1G>A', 'Mutation', 'c.766-1G>A', (42, 52)) ('PPGL', 'Chemical', '-', (165, 169)) ('IVS7', 'Gene', (21, 25)) ('c.765+1G>A', 'Mutation', 'c.765+1G>A', (27, 37)) ('c.765+1G>A', 'Var', (27, 37)) ('PGL', 'Phenotype', 'HP:0002668', (166, 169)) 92420 33362715 There was a statistically significant difference in the risk of development into distant metastasis between patients with SDHB variants and sporadic PPGLs (P <.001). ('variants', 'Var', (127, 135)) ('PGL', 'Phenotype', 'HP:0002668', (150, 153)) ('SDHB', 'Gene', '6390', (122, 126)) ('SDHB', 'Gene', (122, 126)) ('patients', 'Species', '9606', (108, 116)) ('PPGLs', 'Chemical', '-', (149, 154)) 92421 33362715 For PPGLs with SDHB variants, the risk of metastasis by the age of 60 was close to 60%, while in patients with sporadic PPGL, the risk was roughly 20% (P <.001) (Figure 3). ('SDHB', 'Gene', '6390', (15, 19)) ('variants', 'Var', (20, 28)) ('PGL', 'Phenotype', 'HP:0002668', (5, 8)) ('PPGLs', 'Chemical', '-', (4, 9)) ('SDHB', 'Gene', (15, 19)) ('PPGL', 'Chemical', '-', (120, 124)) ('PPGL', 'Chemical', '-', (4, 8)) ('PGL', 'Phenotype', 'HP:0002668', (121, 124)) ('metastasis', 'CPA', (42, 52)) ('patients', 'Species', '9606', (97, 105)) 92423 33362715 Seven patients with pathogenic SDHA variants were diagnosed at a median age of 46 (range: from 13 to 63 years). ('SDHA', 'Gene', '6389', (31, 35)) ('SDHA', 'Gene', (31, 35)) ('patients', 'Species', '9606', (6, 14)) ('pathogenic', 'Reg', (20, 30)) ('variants', 'Var', (36, 44)) 92425 33362715 There was no family history or syndrome in PPGLs with SDHA variants. ('PPGLs', 'Chemical', '-', (43, 48)) ('PGL', 'Phenotype', 'HP:0002668', (44, 47)) ('SDHA', 'Gene', '6389', (54, 58)) ('variants', 'Var', (59, 67)) ('SDHA', 'Gene', (54, 58)) 92426 33362715 There were 11 cases with SDHD variants while 8 variants were verified as pathogenic and 3 remained VUS. ('SDHD', 'Gene', (25, 29)) ('variants', 'Var', (30, 38)) ('SDHD', 'Gene', '6392', (25, 29)) 92427 33362715 Cases carrying pathogenic SDHD mutation were diagnosed at a median age of 27 (range: from 23 to 57 years), and 99mTc-HYNIC-TOC scintigraphy was used for the detection of head and neck PGL or multiple PGL in SDHD mutation carriers. ('PGL', 'Phenotype', 'HP:0002668', (184, 187)) ('SDHD', 'Gene', '6392', (207, 211)) ('SDHD', 'Gene', (207, 211)) ('pathogenic', 'Reg', (15, 25)) ('mutation', 'Var', (31, 39)) ('SDHD', 'Gene', (26, 30)) ('SDHD', 'Gene', '6392', (26, 30)) ('PGL', 'Phenotype', 'HP:0002668', (200, 203)) 92429 33362715 The mutation type of 3 cases with multiple PPGL were framshifts or splicing. ('PGL', 'Phenotype', 'HP:0002668', (44, 47)) ('PPGL', 'Gene', (43, 47)) ('PPGL', 'Chemical', '-', (43, 47)) ('splicing', 'Var', (67, 75)) ('framshifts', 'Var', (53, 63)) 92430 33362715 Two patients had both PCC and PGL.The variant scattered across the 4 exons of SDHD. ('PGL', 'Phenotype', 'HP:0002668', (30, 33)) ('PCC', 'Phenotype', 'HP:0002666', (22, 25)) ('SDHD', 'Gene', '6392', (78, 82)) ('SDHD', 'Gene', (78, 82)) ('patients', 'Species', '9606', (4, 12)) ('variant', 'Var', (38, 45)) 92434 33362715 Variants in codon 631 and codon 634 in exon 11 of RET, were found in 10/12 (83.3%) cases. ('RET', 'Gene', (50, 53)) ('found', 'Reg', (60, 65)) ('RET', 'Gene', '5979', (50, 53)) ('codon 634', 'Var', (26, 35)) 92438 33362715 VHL variants were detected in 12 patients. ('detected', 'Reg', (18, 26)) ('patients', 'Species', '9606', (33, 41)) ('variants', 'Var', (4, 12)) ('VHL', 'Gene', (0, 3)) ('VHL', 'Gene', '7428', (0, 3)) 92440 33362715 Two metastatic PPGL which had no proof of renal cell carcinoma were also found in VHL mutated patients. ('mutated', 'Var', (86, 93)) ('patients', 'Species', '9606', (94, 102)) ('PPGL', 'Chemical', '-', (15, 19)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (42, 62)) ('VHL', 'Gene', (82, 85)) ('carcinoma', 'Phenotype', 'HP:0030731', (53, 62)) ('VHL', 'Gene', '7428', (82, 85)) ('renal cell carcinoma', 'Disease', (42, 62)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (42, 62)) ('PGL', 'Phenotype', 'HP:0002668', (16, 19)) 92444 33362715 Five variants were nonsense and one disrupted the MAX protein by affecting the initial methionine (c.1A>G). ('c.1A>G', 'Mutation', 'rs104894307', (99, 105)) ('disrupted', 'NegReg', (36, 45)) ('MAX', 'Enzyme', (50, 53)) ('affecting', 'Reg', (65, 74)) ('variants', 'Var', (5, 13)) ('methionine', 'Chemical', 'MESH:D008715', (87, 97)) 92445 33362715 The most frequent variant was c.97C>T, p.Arg33Ter (4/6, 66.7%), and 2 of the 4 patients with such variant had metastatic PPGL. ('c.97C>T', 'Mutation', 'rs561280577', (30, 37)) ('PPGL', 'Chemical', '-', (121, 125)) ('PGL', 'Phenotype', 'HP:0002668', (122, 125)) ('p.Arg33Ter', 'Mutation', 'p.R33X', (39, 49)) ('c.97C>T', 'Var', (30, 37)) ('p.Arg33Ter', 'Var', (39, 49)) ('patients', 'Species', '9606', (79, 87)) 92446 33362715 One of the patients with MAX variants had family history. ('patients', 'Species', '9606', (11, 19)) ('variants', 'Var', (29, 37)) ('MAX', 'Gene', (25, 28)) 92448 33362715 One case with a family history of PPGL carried a FH pathogenic variant. ('variant', 'Var', (63, 70)) ('PPGL', 'Disease', (34, 38)) ('PGL', 'Phenotype', 'HP:0002668', (35, 38)) ('PPGL', 'Chemical', '-', (34, 38)) ('pathogenic', 'Reg', (52, 62)) 92449 33362715 A patient with KIF1B variant had metastatic PCC. ('PCC', 'Phenotype', 'HP:0002666', (44, 47)) ('variant', 'Var', (21, 28)) ('metastatic PCC', 'Disease', (33, 47)) ('KIF1B', 'Gene', '23095', (15, 20)) ('KIF1B', 'Gene', (15, 20)) ('patient', 'Species', '9606', (2, 9)) 92457 33362715 7/20 (35%) had RET variants, 7/20 (35%) had VHL variants, 3/20 (15%) had MAX variants, 1/20 (5%) had SDHD variant, and 2/20 (10%) had no known germline variants (Table 2). ('SDHD', 'Gene', (101, 105)) ('SDHD', 'Gene', '6392', (101, 105)) ('VHL', 'Gene', (44, 47)) ('variants', 'Var', (48, 56)) ('RET', 'Gene', '5979', (15, 18)) ('VHL', 'Gene', '7428', (44, 47)) ('variants', 'Var', (19, 27)) ('RET', 'Gene', (15, 18)) 92464 33362715 All of them had pathogenic variants, of which 4 carried VHL mutation and 1 carried SDHD mutation. ('VHL', 'Gene', (56, 59)) ('mutation', 'Var', (60, 68)) ('VHL', 'Gene', '7428', (56, 59)) ('pathogenic', 'Reg', (16, 26)) ('SDHD', 'Gene', '6392', (83, 87)) ('SDHD', 'Gene', (83, 87)) 92465 33362715 Compared to sporadic PPGLs, PPGLs with variants in known pathogenic genes were more likely to develop PGL (P <.001). ('PGL', 'Phenotype', 'HP:0002668', (29, 32)) ('PGL', 'Phenotype', 'HP:0002668', (102, 105)) ('PGL', 'Disease', (102, 105)) ('develop', 'PosReg', (94, 101)) ('PPGLs', 'Chemical', '-', (21, 26)) ('PPGLs', 'Chemical', '-', (28, 33)) ('variants', 'Var', (39, 47)) ('PGL', 'Phenotype', 'HP:0002668', (22, 25)) 92466 33362715 Pathogenic germline variants were more likely to occur in metastatic PPGL than in their non-metastatic counterparts [35/69 (50.7%) vs. 58/245 (23.7%), P <.001]. ('variants', 'Var', (20, 28)) ('occur', 'Reg', (49, 54)) ('PGL', 'Phenotype', 'HP:0002668', (70, 73)) ('metastatic PPGL', 'Disease', (58, 73)) ('PPGL', 'Chemical', '-', (69, 73)) 92468 33362715 SDHD (3/69, 4.3%), MAX (2/69, 2.9%), and VHL (2/69, 2.9%) had relatively higher frequency of variants. ('variants', 'Var', (93, 101)) ('SDHD', 'Gene', '6392', (0, 4)) ('VHL', 'Gene', (41, 44)) ('SDHD', 'Gene', (0, 4)) ('VHL', 'Gene', '7428', (41, 44)) 92469 33362715 SDHA, RET, and KIF1B were also found to have variants, with a rate of 1.4% (1/69), while we did not found mutations in FH in metastatic PPGLs. ('RET', 'Gene', '5979', (6, 9)) ('SDHA', 'Gene', (0, 4)) ('PGL', 'Phenotype', 'HP:0002668', (137, 140)) ('variants', 'Var', (45, 53)) ('PPGLs', 'Chemical', '-', (136, 141)) ('RET', 'Gene', (6, 9)) ('SDHA', 'Gene', '6389', (0, 4)) ('KIF1B', 'Gene', '23095', (15, 20)) ('KIF1B', 'Gene', (15, 20)) 92471 33362715 Twenty four-hour urinary catecholamine excretion charactered elevated NE or elevated NE and DA in SDHB mutated PPGLs. ('mutated', 'Var', (103, 110)) ('elevated', 'PosReg', (76, 84)) ('catecholamine', 'Chemical', 'MESH:D002395', (25, 38)) ('PGL', 'Phenotype', 'HP:0002668', (112, 115)) ('elevated', 'PosReg', (61, 69)) ('SDHB', 'Gene', '6390', (98, 102)) ('urinary catecholamine', 'Phenotype', 'HP:0011976', (17, 38)) ('SDHB', 'Gene', (98, 102)) ('PPGLs', 'Chemical', '-', (111, 116)) ('DA', 'Chemical', 'MESH:C025953', (92, 94)) 92472 33362715 Most patients carrying mutations in SDHD, SDHA, or MAX had elevated NE. ('SDHD', 'Gene', (36, 40)) ('SDHD', 'Gene', '6392', (36, 40)) ('SDHA', 'Gene', (42, 46)) ('patients', 'Species', '9606', (5, 13)) ('mutations', 'Var', (23, 32)) ('elevated', 'PosReg', (59, 67)) ('SDHA', 'Gene', '6389', (42, 46)) 92475 33362715 The overall variant rates of pathogenic genes in PPGLs in our cohort were similar to those reported previously, standing somewhere between 11% to over 40%. ('PPGLs', 'Chemical', '-', (49, 54)) ('PGL', 'Phenotype', 'HP:0002668', (50, 53)) ('variant', 'Var', (12, 19)) ('PPGLs', 'Gene', (49, 54)) 92477 33362715 A recent study from Saudi Arabia reveals that the variant rate was 36.6%, and SDHB was the most common variant. ('variant', 'Var', (50, 57)) ('SDHB', 'Gene', '6390', (78, 82)) ('SDHB', 'Gene', (78, 82)) 92479 33362715 Almost twenty one percent of PPGL had pathogenic germline mutations and VHL was mostly mutated in PPGL at a rate of 23/261(8.8%) in germline level. ('PGL', 'Phenotype', 'HP:0002668', (99, 102)) ('VHL', 'Gene', '7428', (72, 75)) ('mutated', 'Var', (87, 94)) ('PGL', 'Phenotype', 'HP:0002668', (30, 33)) ('PPGL', 'Chemical', '-', (29, 33)) ('PPGL', 'Chemical', '-', (98, 102)) ('pathogenic', 'Reg', (38, 48)) ('germline mutations', 'Var', (49, 67)) ('VHL', 'Gene', (72, 75)) 92485 33362715 Among the 17 SDHB mutated PPGLs, p.Arg46Ter variant, which was the most frequently mutated one in our SDHB mutated PPGLs (6/45, 13.3%), occurred in only one patient (1/17, 5.9%). ('patient', 'Species', '9606', (157, 164)) ('SDHB', 'Gene', '6390', (13, 17)) ('SDHB', 'Gene', '6390', (102, 106)) ('PPGLs', 'Chemical', '-', (26, 31)) ('PGL', 'Phenotype', 'HP:0002668', (27, 30)) ('p.Arg46Ter', 'Var', (33, 43)) ('PGL', 'Phenotype', 'HP:0002668', (116, 119)) ('SDHB', 'Gene', (13, 17)) ('SDHB', 'Gene', (102, 106)) ('p.Arg46Ter', 'Mutation', 'rs74315370', (33, 43)) ('PPGLs', 'Chemical', '-', (115, 120)) 92486 33362715 And the most frequent SDHB variant in TCGA data was p.Ile127Ser [29.4% (5/17)], which was not detected in our cohort. ('p.Ile127Ser [', 'Var', (52, 65)) ('p.Ile127Ser', 'Mutation', 'rs786201095', (52, 63)) ('SDHB', 'Gene', '6390', (22, 26)) ('SDHB', 'Gene', (22, 26)) 92487 33362715 In a research conducted in Saudi Arabia, the most common SDHB variant was p.Arg90Ter, occurring in 57% of all the SDHB mutated cases, while in our series, no case had such variant. ('p.Arg90Ter', 'Mutation', 'rs74315366', (74, 84)) ('p.Arg90Ter', 'Var', (74, 84)) ('SDHB', 'Gene', '6390', (114, 118)) ('SDHB', 'Gene', (114, 118)) ('SDHB', 'Gene', '6390', (57, 61)) ('SDHB', 'Gene', (57, 61)) ('mutated', 'Var', (119, 126)) 92488 33362715 A national study from the Netherlands revealed that IVS4 (c.423+1G>A) was the most common variant site and was detected in 16/83 (19%) SDHB mutated patients, while the variant was found in 2/45 (4.4%) SDHB mutated patient in our cohort. ('IVS4 (c.423+1G>A', 'Var', (52, 68)) ('patients', 'Species', '9606', (148, 156)) ('patient', 'Species', '9606', (214, 221)) ('SDHB', 'Gene', (201, 205)) ('detected', 'Reg', (111, 119)) ('SDHB', 'Gene', '6390', (201, 205)) ('SDHB', 'Gene', '6390', (135, 139)) ('c.423+1G>A', 'Mutation', 'rs398122805', (58, 68)) ('SDHB', 'Gene', (135, 139)) ('patient', 'Species', '9606', (148, 155)) ('mutated', 'Var', (140, 147)) 92489 33362715 In addition, in our study, novel variants c.765-1G>A and p.Asp221Gly in SDHB were recurrent. ('c.765-1G>A', 'Mutation', 'c.765-1G>A', (42, 52)) ('p.Asp221Gly', 'Mutation', 'p.D221G', (57, 68)) ('c.765-1G>A', 'Var', (42, 52)) ('SDHB', 'Gene', (72, 76)) ('p.Asp221Gly', 'Var', (57, 68)) ('SDHB', 'Gene', '6390', (72, 76)) 92490 33362715 Exon 2, exon 7, and the splicing of IVS7 (c.765+1G>A and c.766-1G>A) were the most commonly mutated domains in our cohorts, and the finding was different from the results of other large sample researches. ('IVS7', 'Gene', (36, 40)) ('c.766-1G>A', 'Var', (57, 67)) ('c.765+1G>A', 'Mutation', 'c.765+1G>A', (42, 52)) ('c.765+1G>A', 'Var', (42, 52)) ('c.766-1G>A', 'Mutation', 'c.766-1G>A', (57, 67)) 92491 33362715 All the aforementioned studies, including ours, strongly suggest that the hotspots of SDHB variant vary in different races or countries, and it may be feasible to preferentially detect some specific sites of SDHB gene for metastatic PPGL patients according to the variant hotspots to achieve better cost-effectiveness and efficiency. ('SDHB', 'Gene', (86, 90)) ('SDHB', 'Gene', '6390', (208, 212)) ('variant', 'Var', (91, 98)) ('PGL', 'Phenotype', 'HP:0002668', (234, 237)) ('SDHB', 'Gene', (208, 212)) ('metastatic PPGL', 'Disease', (222, 237)) ('PPGL', 'Chemical', '-', (233, 237)) ('patients', 'Species', '9606', (238, 246)) ('SDHB', 'Gene', '6390', (86, 90)) 92492 33362715 The clinical features of patients with SDHB variants in our series mimicked those in other studies, and SDHB variant is associated with development of metastasis and extra-adrenal tumors. ('metastasis', 'CPA', (151, 161)) ('SDHB', 'Gene', '6390', (39, 43)) ('associated with', 'Reg', (120, 135)) ('tumor', 'Phenotype', 'HP:0002664', (180, 185)) ('variant', 'Var', (109, 116)) ('tumors', 'Phenotype', 'HP:0002664', (180, 186)) ('adrenal tumors', 'Disease', 'MESH:D000310', (172, 186)) ('SDHB', 'Gene', (39, 43)) ('patients', 'Species', '9606', (25, 33)) ('SDHB', 'Gene', '6390', (104, 108)) ('adrenal tumors', 'Disease', (172, 186)) ('variants', 'Var', (44, 52)) ('SDHB', 'Gene', (104, 108)) 92494 33362715 On the other hand, with SDHA and SDHD variants, corresponding tumors tend to affect elderly patients. ('SDHA', 'Gene', (24, 28)) ('SDHD', 'Gene', '6392', (33, 37)) ('tumor', 'Phenotype', 'HP:0002664', (62, 67)) ('variants', 'Var', (38, 46)) ('tumors', 'Disease', (62, 68)) ('SDHD', 'Gene', (33, 37)) ('tumors', 'Disease', 'MESH:D009369', (62, 68)) ('patients', 'Species', '9606', (92, 100)) ('tumors', 'Phenotype', 'HP:0002664', (62, 68)) ('affect', 'Reg', (77, 83)) ('SDHA', 'Gene', '6389', (24, 28)) 92495 33362715 It has been reported that the SDHD variant carrier had a penetrance rate of 86% at the age of 50. ('variant', 'Var', (35, 42)) ('SDHD', 'Gene', (30, 34)) ('SDHD', 'Gene', '6392', (30, 34)) 92499 33362715 RET and VHL gene variants mainly cause PCC, and they are principally responsible for development of bilateral PCC, accounting for 70% in all bilateral PCC in our study. ('cause', 'Reg', (33, 38)) ('RET', 'Gene', '5979', (0, 3)) ('PCC', 'Phenotype', 'HP:0002666', (110, 113)) ('variants', 'Var', (17, 25)) ('VHL', 'Gene', '7428', (8, 11)) ('PCC', 'Disease', (39, 42)) ('RET', 'Gene', (0, 3)) ('bilateral PCC', 'Disease', (100, 113)) ('PCC', 'Phenotype', 'HP:0002666', (39, 42)) ('PCC', 'Phenotype', 'HP:0002666', (151, 154)) ('responsible', 'Reg', (69, 80)) ('VHL', 'Gene', (8, 11)) 92503 33362715 Our study suggested that although VHL and RET gene variants mainly lead to adrenal PCC, they may also result in extra-adrenal PGL. ('extra-adrenal PGL', 'Disease', (112, 129)) ('RET', 'Gene', '5979', (42, 45)) ('PCC', 'Phenotype', 'HP:0002666', (83, 86)) ('lead to', 'Reg', (67, 74)) ('adrenal PCC', 'Disease', (75, 86)) ('adrenal PCC', 'Disease', 'OMIM:115700', (75, 86)) ('variants', 'Var', (51, 59)) ('result in', 'Reg', (102, 111)) ('PGL', 'Phenotype', 'HP:0002668', (126, 129)) ('VHL', 'Gene', (34, 37)) ('RET', 'Gene', (42, 45)) ('VHL', 'Gene', '7428', (34, 37)) 92504 33362715 This is especially true of VHL variant, which needs to be screened carefully in clinical practice. ('VHL', 'Gene', '7428', (27, 30)) ('variant', 'Var', (31, 38)) ('VHL', 'Gene', (27, 30)) 92505 33362715 Up to now, only 12 PPGL patients with FH gene variants have been reported. ('PPGL', 'Chemical', '-', (19, 23)) ('PGL', 'Phenotype', 'HP:0002668', (20, 23)) ('variants', 'Var', (46, 54)) ('patients', 'Species', '9606', (24, 32)) ('FH gene', 'Gene', (38, 45)) 92514 33362715 KIF1B gene variant had been reported previously in a familial PCC patient. ('KIF1B', 'Gene', (0, 5)) ('KIF1B', 'Gene', '23095', (0, 5)) ('reported', 'Reg', (28, 36)) ('patient', 'Species', '9606', (66, 73)) ('PCC', 'Phenotype', 'HP:0002666', (62, 65)) ('variant', 'Var', (11, 18)) 92516 33362715 Our research found a case of KIF1B variant who had a unilateral PCC with a metastatic lesion. ('KIF1B', 'Gene', (29, 34)) ('variant', 'Var', (35, 42)) ('PCC', 'Phenotype', 'HP:0002666', (64, 67)) ('KIF1B', 'Gene', '23095', (29, 34)) 92518 33362715 Our case suggested that the germline variants of the KIF1B gene could also pose risk of metastatic PCC. ('germline variants', 'Var', (28, 45)) ('PCC', 'Phenotype', 'HP:0002666', (99, 102)) ('metastatic PCC', 'Disease', (88, 102)) ('KIF1B', 'Gene', (53, 58)) ('KIF1B', 'Gene', '23095', (53, 58)) ('risk', 'Reg', (80, 84)) 92520 33362715 In our cohort, 50.7% (35/69) of metastatic PPGLs had hereditary germline variants, and were mostly caused by SDHB variant, followed by SDHD, VHL, MAX, SDHA, RET, and KIF1B. ('variant', 'Var', (114, 121)) ('SDHA', 'Gene', (151, 155)) ('SDHD', 'Gene', '6392', (135, 139)) ('PPGLs', 'Chemical', '-', (43, 48)) ('VHL', 'Gene', '7428', (141, 144)) ('SDHB', 'Gene', '6390', (109, 113)) ('PGL', 'Phenotype', 'HP:0002668', (44, 47)) ('SDHD', 'Gene', (135, 139)) ('metastatic PPGLs', 'Disease', (32, 48)) ('RET', 'Gene', (157, 160)) ('KIF1B', 'Gene', (166, 171)) ('SDHB', 'Gene', (109, 113)) ('RET', 'Gene', '5979', (157, 160)) ('KIF1B', 'Gene', '23095', (166, 171)) ('caused by', 'Reg', (99, 108)) ('SDHA', 'Gene', '6389', (151, 155)) ('VHL', 'Gene', (141, 144)) 92522 33362715 PPGLs with SDHB variants need more attention since they are highly predisposed to distant metastasis. ('PGL', 'Phenotype', 'HP:0002668', (1, 4)) ('SDHB', 'Gene', (11, 15)) ('PPGLs', 'Chemical', '-', (0, 5)) ('predisposed', 'Reg', (67, 78)) ('distant metastasis', 'CPA', (82, 100)) ('SDHB', 'Gene', '6390', (11, 15)) ('variants', 'Var', (16, 24)) 92526 33362715 Nevertheless, we added SDHB immunohistochemistry technique and MLPA detection to all samples with multiple PPGL or metastasis or early onset that are most likely to have large deletions. ('PPGL', 'Chemical', '-', (107, 111)) ('SDHB', 'Gene', '6390', (23, 27)) ('deletions', 'Var', (176, 185)) ('SDHB', 'Gene', (23, 27)) ('PGL', 'Phenotype', 'HP:0002668', (108, 111)) 92527 33362715 In conclusion, our study profiled the genetic variants and identified the corresponding clinical characteristics of PPGL in Chinese subjects. ('PPGL', 'Gene', (116, 120)) ('variants', 'Var', (46, 54)) ('PGL', 'Phenotype', 'HP:0002668', (117, 120)) ('PPGL', 'Chemical', '-', (116, 120)) 92552 33250060 A recent meta-analysis assessed the benefit of preoperative alpha-blockade before adrenalectomy for pheochromocytoma, and found no difference in mortality, cardiovascular complications, mean maximal intraoperative blood pressure, or mean maximal intraoperative heart rate between patients with alpha-blockade and those without. ('pheochromocytoma', 'Disease', 'MESH:D010673', (100, 116)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (100, 116)) ('patients', 'Species', '9606', (280, 288)) ('mortality', 'Disease', (145, 154)) ('adrenalectomy for pheochromocytoma', 'Phenotype', 'HP:0006748', (82, 116)) ('cardiovascular complications', 'Phenotype', 'HP:0001626', (156, 184)) ('cardiovascular complications', 'Disease', 'MESH:D002318', (156, 184)) ('cardiovascular complications', 'Disease', (156, 184)) ('pheochromocytoma', 'Disease', (100, 116)) ('mortality', 'Disease', 'MESH:D003643', (145, 154)) ('alpha-blockade', 'Var', (294, 308)) 92642 31208160 Even if there are no signs and symptoms of catecholamine elevation, functional PPGLs may lead to CM. ('functional', 'Var', (68, 78)) ('catecholamine elevation', 'Phenotype', 'HP:0003334', (43, 66)) ('PPGLs', 'Gene', (79, 84)) ('lead to', 'Reg', (89, 96)) ('catecholamine', 'Chemical', 'MESH:D002395', (43, 56)) 92689 31208160 On the other hand, somatic NF1 mutations were detected in 25% of sporadic PPGLs. ('mutations', 'Var', (31, 40)) ('detected', 'Reg', (46, 54)) ('PPGLs', 'Disease', (74, 79)) ('NF1', 'Gene', (27, 30)) ('NF1', 'Gene', '4763', (27, 30)) 92782 25871962 Familial PPGL is usually inherited as an autosomal dominant trait, so the offspring of a mutation carrier will have a 50% chance of having inherited the relevant PPGL gene mutation. ('PPGL', 'Gene', (162, 166)) ('PPGL', 'Chemical', '-', (9, 13)) ('mutation', 'Var', (172, 180)) ('Familial PPGL', 'Disease', (0, 13)) ('PPGL', 'Chemical', '-', (162, 166)) 92786 25871962 In these cases, low penetrance of the mutant allele, the existence of parent-of-origin effects on disease penetrance (in SDHD, SDHAF2 and MAX mutations) or de-novo mutations in the index patient can obscure the diagnosis of inherited PPGL. ('mutant', 'Var', (38, 44)) ('PPGL', 'Chemical', '-', (234, 238)) ('mutations', 'Var', (142, 151)) ('SDHD', 'Gene', (121, 125)) ('SDHAF2', 'Gene', '54949', (127, 133)) ('SDHD', 'Gene', '6392', (121, 125)) ('SDHAF2', 'Gene', (127, 133)) ('PPGL', 'Disease', (234, 238)) ('patient', 'Species', '9606', (187, 194)) ('mutations', 'Var', (164, 173)) 92790 25871962 Two studies directly compared NGS with conventional sequencing for diagnosis of germline mutations in known PPGL genes. ('germline mutations', 'Var', (80, 98)) ('PPGL', 'Chemical', '-', (108, 112)) ('PPGL', 'Gene', (108, 112)) 92799 25871962 using a different platform and instrumental setting, although all mutations in 18 known hereditary PPGLs were identified by their approach. ('mutations', 'Var', (66, 75)) ('PPGLs', 'Gene', (99, 104)) ('PPGLs', 'Chemical', '-', (99, 104)) 92807 25871962 As research advances, the real contribution of other defects, including large genomic gains or losses, translocations, fusions, and noncoding mutations, to PPGL pathogenesis will become better known. ('gains', 'PosReg', (86, 91)) ('PPGL', 'Chemical', '-', (156, 160)) ('PPGL', 'Gene', (156, 160)) ('losses', 'NegReg', (95, 101)) ('fusions', 'Var', (119, 126)) ('translocations', 'Var', (103, 117)) 92808 25871962 Other technical limitations to NGS methods recognized in the setting of PPGLs, discussed above, and off-target sequencing and misalignment to homologous regions, such as paralogs or pseudogenes, can also lead to reduced sensitivity and specificity of variant detection. ('PPGLs', 'Chemical', '-', (72, 77)) ('reduced', 'NegReg', (212, 219)) ('variant', 'Var', (251, 258)) ('sensitivity', 'MPA', (220, 231)) 92809 25871962 Several targeted NGS screening platforms for clinical diagnosis of hereditary breast, ovarian, and colon cancer have been developed, in which such designs were implemented coupled with high depth of coverage and robust analytical pipelines led to successful detection of a wide range of deletion or duplication lengths. ('colon cancer', 'Phenotype', 'HP:0003003', (99, 111)) ('duplication lengths', 'Var', (299, 318)) ('deletion', 'Var', (287, 295)) ('hereditary breast, ovarian, and colon cancer', 'Disease', 'MESH:D061325', (67, 111)) ('cancer', 'Phenotype', 'HP:0002664', (105, 111)) 92810 25871962 The ability to identify larger structural defects should be a goal of NGS-based screens in PPGLs because as much as 10% of the defects involving SDH and VHL can result from whole or partial gene deletions. ('VHL', 'Gene', (153, 156)) ('PPGLs', 'Chemical', '-', (91, 96)) ('SDH', 'Gene', '6390', (145, 148)) ('VHL', 'Gene', '7428', (153, 156)) ('SDH', 'Gene', (145, 148)) ('result from', 'Reg', (161, 172)) ('partial gene deletions', 'Var', (182, 204)) ('defects', 'Var', (127, 134)) 92811 25871962 Beyond coding sequence mutations and large structural defects of target genes, gene inactivation mediated by epigenetic, but not genetic events (epimutations), have been recently reported in SDHC of Carney triad syndrome patients, in whom paragangliomas are associated with pulmonary chondroma and gastrointestinal stromal tumors (GIST). ('pulmonary chondroma', 'Phenotype', 'HP:0031474', (274, 293)) ('patients', 'Species', '9606', (221, 229)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (298, 329)) ('SDHC of Carney triad syndrome', 'Disease', 'MESH:C565803', (191, 220)) ('associated', 'Reg', (258, 268)) ('paragangliomas', 'Phenotype', 'HP:0002668', (239, 253)) ('tumor', 'Phenotype', 'HP:0002664', (323, 328)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (298, 329)) ('paragangliomas', 'Disease', 'MESH:D010235', (239, 253)) ('pulmonary chondroma', 'Disease', 'MESH:D002812', (274, 293)) ('pulmonary chondroma', 'Disease', (274, 293)) ('epigenetic', 'Var', (109, 119)) ('tumors', 'Phenotype', 'HP:0002664', (323, 329)) ('SDHC of Carney triad syndrome', 'Disease', (191, 220)) ('gastrointestinal stromal tumors', 'Disease', (298, 329)) ('GIST', 'Phenotype', 'HP:0100723', (331, 335)) ('paragangliomas', 'Disease', (239, 253)) ('paraganglioma', 'Phenotype', 'HP:0002668', (239, 252)) 92821 25871962 The variants that remain after these filters are then classified as follows: benign, deleterious (previously reported in hereditary PPGLs, as referenced in the literature and/or online mutation databases available for various PPGL genes), potentially pathogenic variants (conserved amino acids, nonsense or frameshift), or variants of unknown clinical significance (VUS, further discussed below). ('PPGL', 'Chemical', '-', (132, 136)) ('conserved amino acids', 'Var', (272, 293)) ('nonsense or frameshift', 'Var', (295, 317)) ('PPGL', 'Chemical', '-', (226, 230)) ('pathogenic', 'Reg', (251, 261)) ('PPGLs', 'Chemical', '-', (132, 137)) 92825 25871962 However, in practice, there are instances of allelic strand sequence preference, when VFTs deviate from this pattern, as reported by Rattenberry et al., and also seen in our own experience. ('allelic', 'Var', (45, 52)) ('VFTs', 'Disease', (86, 90)) ('VFTs', 'Disease', 'None', (86, 90)) 92826 25871962 This is the case in EPAS1, wherein a postzygotic de-novo mutation can lead to increased risk of PPGLs, polycythemia and occasionally somatostatinomas of the duodenum. ('mutation', 'Var', (57, 65)) ('EPAS1', 'Gene', '2034', (20, 25)) ('PPGLs', 'Disease', (96, 101)) ('EPAS1', 'Gene', (20, 25)) ('somatostatinomas', 'Disease', 'MESH:D013005', (133, 149)) ('polycythemia', 'Disease', (103, 115)) ('somatostatinomas', 'Disease', (133, 149)) ('PPGLs', 'Chemical', '-', (96, 101)) ('polycythemia', 'Phenotype', 'HP:0001901', (103, 115)) ('polycythemia', 'Disease', 'MESH:D011086', (103, 115)) 92827 25871962 Determining the risks of germline transmission of mosaic diseases can be challenging and impractical, therefore genetic counseling should play a dominant role, more than the genetic test itself, in the discussion of transmission risks of patients with EPAS1 mutations at tumor level. ('mutations', 'Var', (258, 267)) ('tumor', 'Phenotype', 'HP:0002664', (271, 276)) ('EPAS1', 'Gene', (252, 257)) ('tumor', 'Disease', (271, 276)) ('patients', 'Species', '9606', (238, 246)) ('tumor', 'Disease', 'MESH:D009369', (271, 276)) ('EPAS1', 'Gene', '2034', (252, 257)) 92829 25871962 However, limitations in the ability to distinguish pathogenic from nonpathogenic mutations are likely to gradually decrease, as reference databases become more complete and our knowledge of PPGLs improves, with more mutations being recurrently detected and their functional effects tested. ('mutations', 'Var', (216, 225)) ('PPGLs', 'Gene', (190, 195)) ('PPGLs', 'Chemical', '-', (190, 195)) 92830 25871962 Although there has been some debate as to whether VUSs should be reported due to the uncertainty of their value, the predominant view is that the benefits of reporting outweigh risks of, for example, not revealing variants that may be eventually proven to be pathogenic. ('VUSs', 'Disease', (50, 54)) ('VUSs', 'Disease', 'None', (50, 54)) ('variants', 'Var', (214, 222)) 92899 32014021 A previous retrospective study showed that the mortality rate for dogs that received phenoxybenzamine before surgery was 3.7-fold lower than that for dogs that did not receive the treatment. ('lower', 'NegReg', (130, 135)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (85, 101)) ('dogs', 'Species', '9615', (150, 154)) ('dogs', 'Species', '9615', (66, 70)) ('mortality', 'CPA', (47, 56)) ('phenoxybenzamine', 'Var', (85, 101)) 93047 31528576 Recently, the last item of the "rule of 10s" was reformulated, because it appears that 25% rather than 10% of all pheochromocytomas are associated with germline mutations. ('associated', 'Reg', (136, 146)) ('germline mutations', 'Var', (152, 170)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (114, 131)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (114, 130)) ('pheochromocytomas', 'Disease', (114, 131)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (114, 131)) 93087 31528576 The histopathological changes included positivity for C4d antigen in necrotic cardiomyocytes, C4d being an inactive split product of C3 convertase. ('C4d', 'Var', (94, 97)) ('necrotic cardiomyocytes', 'Disease', 'MESH:D009336', (69, 92)) ('necrotic cardiomyocytes', 'Disease', (69, 92)) ('C4d antigen', 'Protein', (54, 65)) 93090 31528576 In the case of acute myocardial infarction, C4d is an early indicator of cardiomyocyte necrosis before the influx of inflammatory cells. ('cardiomyocyte necrosis', 'Disease', 'MESH:D009336', (73, 95)) ('cardiomyocyte necrosis', 'Disease', (73, 95)) ('acute myocardial infarction', 'Disease', 'MESH:D009203', (15, 42)) ('myocardial infarction', 'Phenotype', 'HP:0001658', (21, 42)) ('C4d', 'Var', (44, 47)) ('acute myocardial infarction', 'Disease', (15, 42)) 93150 29644077 More than 40% of patients with pheochromocytomas harbor a germline mutation in one of the known susceptibility genes. ('pheochromocytomas', 'Disease', (31, 48)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (31, 48)) ('patients', 'Species', '9606', (17, 25)) ('germline mutation', 'Var', (58, 75)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (31, 47)) 93167 29644077 Apart from the direct effects of catecholamine hypersecretion, it is thought that cerebral blood pressure variations could also produce neuropsychiatric symptoms. ('produce', 'Reg', (128, 135)) ('psychiatric', 'Disease', (141, 152)) ('variations', 'Var', (106, 116)) ('psychiatric', 'Disease', 'MESH:D001523', (141, 152)) ('psychiatric symptoms', 'Phenotype', 'HP:0000708', (141, 161)) ('catecholamine', 'Chemical', 'MESH:D002395', (33, 46)) ('cerebral blood pressure', 'MPA', (82, 105)) 93247 28760150 A direct sequencing analyses showed a RET (rearranged during transfection proto-oncogene) germline mutation at exon 11 (codon 634), with a substitution of tyrosine by a cysteine residue (C1900T C (C634R). ('tyrosine', 'Chemical', 'MESH:D014443', (155, 163)) ('RET', 'Gene', '5979', (38, 41)) ('C1900T', 'Var', (187, 193)) ('rearranged during transfection proto-oncogene', 'Gene', '5979', (43, 88)) ('cysteine', 'Chemical', 'MESH:D003545', (169, 177)) ('rearranged during transfection proto-oncogene', 'Gene', (43, 88)) ('RET', 'Gene', (38, 41)) ('C634R', 'Mutation', 'rs75076352', (197, 202)) ('C1900T', 'SUBSTITUTION', 'None', (187, 193)) 93273 28760150 Disorders of crest cells migration or maturation at various stages of the cellular development are thought to lead to CPC/PG. ('Disorders', 'Var', (0, 9)) ('CPC/PG', 'Disease', (118, 124)) ('men', 'Species', '9606', (90, 93)) ('crest cells migration', 'CPA', (13, 34)) ('lead', 'Reg', (110, 114)) ('CPC', 'Chemical', 'MESH:C015101', (118, 121)) ('maturation', 'CPA', (38, 48)) 93309 28760150 They carry mostly a germline methionine-to-threonine mutation at codon 918 (M918T) in exon 16 of the RET proto-oncogene. ('M918T', 'Mutation', 'rs74799832', (76, 81)) ('methionine-to-threonine mutation at codon 918', 'Mutation', 'rs74799832', (29, 74)) ('M918T', 'Var', (76, 81)) ('RET', 'Gene', '5979', (101, 104)) ('RET', 'Gene', (101, 104)) 93310 28760150 had a composite retroperitoneal paraganglioma with a M918T germline mutation of the RET proto-oncogene. ('paraganglioma', 'Phenotype', 'HP:0002668', (32, 45)) ('RET', 'Gene', (84, 87)) ('retroperitoneal paraganglioma', 'Disease', 'MESH:D012186', (16, 45)) ('M918T', 'Mutation', 'rs74799832', (53, 58)) ('retroperitoneal paraganglioma', 'Phenotype', 'HP:0006729', (16, 45)) ('retroperitoneal paraganglioma', 'Disease', (16, 45)) ('RET', 'Gene', '5979', (84, 87)) ('M918T', 'Var', (53, 58)) 93322 28760150 In fact, the aggressiveness of MTC in MEN 2 depends on the type of RET proto-oncogene mutations, and a subsequent risk stratification has been suggested by the ATA. ('mutations', 'Var', (86, 95)) ('aggressiveness', 'Disease', 'MESH:D001523', (13, 27)) ('aggressiveness', 'Disease', (13, 27)) ('RET', 'Gene', '5979', (67, 70)) ('aggressiveness', 'Phenotype', 'HP:0000718', (13, 27)) ('MEN', 'Species', '9606', (38, 41)) ('RET', 'Gene', (67, 70)) 93323 28760150 Patients with MEN 2A and C634 mutation on exon 11, like our patient, have a high risk of aggressive MTC. ('patient', 'Species', '9606', (60, 67)) ('Patients', 'Species', '9606', (0, 8)) ('MEN 2A', 'Gene', (14, 20)) ('C634', 'Var', (25, 29)) ('MEN 2A', 'Gene', '5979', (14, 20)) ('aggressive MTC', 'Disease', (89, 103)) 93324 28760150 Patients with M918T RET mutation on exon 16, in patients with MEN 2B, have the highest risk. ('RET', 'Gene', '5979', (20, 23)) ('M918T', 'Var', (14, 19)) ('RET', 'Gene', (20, 23)) ('MEN 2B', 'Gene', (62, 68)) ('Patients', 'Species', '9606', (0, 8)) ('M918T', 'Mutation', 'rs74799832', (14, 19)) ('patients', 'Species', '9606', (48, 56)) ('MEN 2B', 'Gene', '5979', (62, 68)) 93332 28760150 ATA American Thyroid Association CPC/PG Composite pheochromocytoma-paraganglioma DNA Deoxyribonucleic acid GN Ganglioneuroma GNB Ganglioneuroblastoma HES Hematoxylin-eosin Saffron MCT Medullary carcinoma of the thyroid MEN 2A/B Multiple endocrine neoplasia syndrome type 2A/type 2B MPNST Malignant peripheral nerve sheath tumors NF1 Neurofibromatosis type 1 NSE Neuron-specific enolase PC Pheochromocytoma PCR Polymerase chain reaction PG Paraganglioma RET Rearranged during transfection proto-oncogene vHL von Hippel Lindau syndrome VIP Vasoactive intestinal peptide BE wrote the report and made substantial contributions to conception and design of the manuscript. ('Ganglioneuroblastoma', 'Disease', 'MESH:D018305', (129, 149)) ('von Hippel Lindau syndrome', 'Disease', 'MESH:D006623', (507, 533)) ('Ganglioneuroma', 'Phenotype', 'HP:0003005', (110, 124)) ('Malignant peripheral nerve sheath tumors', 'Disease', (288, 328)) ('Ganglioneuroblastoma', 'Phenotype', 'HP:0006747', (129, 149)) ('pheochromocytoma-paraganglioma', 'Disease', (50, 80)) ('vHL', 'Gene', (503, 506)) ('Malignant peripheral nerve sheath tumors', 'Disease', 'MESH:D018319', (288, 328)) ('tumors', 'Phenotype', 'HP:0002664', (322, 328)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (136, 149)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (439, 452)) ('CPC', 'Chemical', 'MESH:C015101', (33, 36)) ('carcinoma of the thyroid', 'Disease', 'MESH:D013964', (194, 218)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (389, 405)) ('RET', 'Gene', '5979', (453, 456)) ('PC', 'Chemical', '-', (406, 408)) ('Paraganglioma', 'Disease', (439, 452)) ('2A/B', 'SUBSTITUTION', 'None', (223, 227)) ('NF1', 'Gene', '4763', (329, 332)) ('2A/B', 'Var', (223, 227)) ('tumor', 'Phenotype', 'HP:0002664', (322, 327)) ('Multiple endocrine neoplasia syndrome', 'Disease', 'MESH:D009377', (228, 265)) ('Neurofibromatosis type', 'Disease', (333, 355)) ('HES', 'Chemical', '-', (150, 153)) ('Multiple endocrine neoplasia syndrome', 'Disease', (228, 265)) ('Neurofibromatosis type', 'Disease', 'MESH:C537392', (333, 355)) ('neoplasia', 'Phenotype', 'HP:0002664', (247, 256)) ('Pheochromocytoma', 'Disease', (389, 405)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (389, 405)) ('vHL', 'Gene', '7428', (503, 506)) ('NF1', 'Gene', (329, 332)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (50, 66)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (333, 350)) ('RET', 'Gene', (453, 456)) ('pheochromocytoma-paraganglioma', 'Disease', 'MESH:D010673', (50, 80)) ('VIP', 'Gene', '7432', (534, 537)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (237, 256)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) ('von Hippel Lindau syndrome', 'Disease', (507, 533)) ('PC', 'Chemical', '-', (386, 388)) ('Malignant peripheral nerve sheath tumors', 'Phenotype', 'HP:0100697', (288, 328)) ('carcinoma', 'Phenotype', 'HP:0030731', (194, 203)) ('man', 'Species', '9606', (655, 658)) ('Hematoxylin-eosin Saffron', 'Chemical', '-', (154, 179)) ('NSE', 'Gene', '2026', (358, 361)) ('PC', 'Chemical', '-', (34, 36)) ('Paraganglioma', 'Disease', 'MESH:D010235', (439, 452)) ('Ganglioneuroblastoma', 'Disease', (129, 149)) ('VIP', 'Gene', (534, 537)) ('NSE', 'Gene', (358, 361)) ('carcinoma of the thyroid', 'Disease', (194, 218)) 93335 28462171 Multiple Recurrent Paraganglioma in a Pediatric Patient with Germline SDH-B Mutation Magnetic Resonance Imaging (MRI) and fluoro-2-deoxy-d-glucose positron emission tomography (FDG-PET) are recognized approaches for locating paragangliomas. ('FDG', 'Chemical', '-', (177, 180)) ('Patient', 'Species', '9606', (48, 55)) ('Paraganglioma', 'Disease', 'MESH:D010235', (19, 32)) ('paragangliomas', 'Disease', (225, 239)) ('paragangliomas', 'Disease', 'MESH:D010235', (225, 239)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (19, 32)) ('paraganglioma', 'Phenotype', 'HP:0002668', (225, 238)) ('SDH-B', 'Gene', '6390', (70, 75)) ('Mutation', 'Var', (76, 84)) ('fluoro-2-deoxy-d-glucose', 'Chemical', '-', (122, 146)) ('paragangliomas', 'Phenotype', 'HP:0002668', (225, 239)) ('SDH-B', 'Gene', (70, 75)) ('Paraganglioma', 'Disease', (19, 32)) 93337 28462171 13-year-old male with SDH-B mutation presented with symptoms of paraganglioma and elevated catecholamines. ('paraganglioma', 'Disease', (64, 77)) ('catecholamines', 'Chemical', 'MESH:D002395', (91, 105)) ('SDH-B', 'Gene', '6390', (22, 27)) ('SDH-B', 'Gene', (22, 27)) ('elevated', 'PosReg', (82, 90)) ('mutation', 'Var', (28, 36)) ('paraganglioma', 'Disease', 'MESH:D010235', (64, 77)) ('elevated catecholamines', 'Phenotype', 'HP:0003334', (82, 105)) ('catecholamines', 'MPA', (91, 105)) ('paraganglioma', 'Phenotype', 'HP:0002668', (64, 77)) 93342 28462171 Mutations in these genes are associated with development of paragangliomas, pheochromocytomas, and renal cell carcinoma (RCC). ('paragangliomas', 'Disease', (60, 74)) ('paragangliomas', 'Disease', 'MESH:D010235', (60, 74)) ('RCC', 'Phenotype', 'HP:0005584', (121, 124)) ('paragangliomas', 'Phenotype', 'HP:0002668', (60, 74)) ('RCC', 'Disease', 'MESH:C538614', (121, 124)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (76, 93)) ('RCC', 'Disease', (121, 124)) ('carcinoma', 'Phenotype', 'HP:0030731', (110, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (76, 92)) ('pheochromocytomas', 'Disease', (76, 93)) ('renal cell carcinoma', 'Disease', (99, 119)) ('Mutations', 'Var', (0, 9)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (76, 93)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (99, 119)) ('paraganglioma', 'Phenotype', 'HP:0002668', (60, 73)) ('associated', 'Reg', (29, 39)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (99, 119)) 93351 28462171 His past medical history was significant for a previous right total adrenalectomy at age 11 at an outside institution for biochemically active pheochromocytoma associated with germline SDHB alteration. ('SDHB', 'Gene', (185, 189)) ('pheochromocytoma', 'Disease', (143, 159)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (143, 159)) ('SDHB', 'Gene', '6390', (185, 189)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (143, 159)) ('alteration', 'Var', (190, 200)) ('associated', 'Reg', (160, 170)) 93372 28462171 Germline SDHB mutation may result in aggressive RCC and early surgical resection of solid renal masses is recommended. ('SDHB', 'Gene', '6390', (9, 13)) ('RCC', 'Disease', 'MESH:C538614', (48, 51)) ('renal masses', 'Phenotype', 'HP:0009726', (90, 102)) ('SDHB', 'Gene', (9, 13)) ('mutation', 'Var', (14, 22)) ('result in', 'Reg', (27, 36)) ('RCC', 'Disease', (48, 51)) ('RCC', 'Phenotype', 'HP:0005584', (48, 51)) 93474 27759849 Whereas the ethanol distribution within tumors is limited by septa and can be unpredictable, RFA creates a relatively homogeneous ablation zone. ('tumors', 'Phenotype', 'HP:0002664', (40, 46)) ('RFA', 'Var', (93, 96)) ('ethanol', 'Chemical', 'MESH:D000431', (12, 19)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('tumors', 'Disease', (40, 46)) ('tumors', 'Disease', 'MESH:D009369', (40, 46)) 93614 23626551 The percentage of malignant PGLs is higher if related to SDH B (SDH-B) gene mutations. ('higher', 'PosReg', (36, 42)) ('mutations', 'Var', (76, 85)) ('SDH B', 'Gene', '6390', (57, 62)) ('PGLs', 'Phenotype', 'HP:0002668', (28, 32)) ('SDH-B', 'Gene', '6390', (64, 69)) ('PGL', 'Phenotype', 'HP:0002668', (28, 31)) ('SDH-B', 'Gene', (64, 69)) ('SDH B', 'Gene', (57, 62)) 93616 23626551 The most widely therapeutic approaches utilized are 131I-metaiodobenzylguanidine (MIBG) or a combination of cyclophosphamide, vincristine and dacarbazine, with comparable rates of response and toxicity, but no standard of care is established for patients with metastatic PGLs. ('cyclophosphamide', 'Chemical', 'MESH:D003520', (108, 124)) ('131I-metaiodobenzylguanidine', 'Var', (52, 80)) ('MIBG', 'Chemical', '-', (82, 86)) ('131I-metaiodobenzylguanidine', 'Chemical', '-', (52, 80)) ('patients', 'Species', '9606', (246, 254)) ('PGLs', 'Phenotype', 'HP:0002668', (271, 275)) ('vincristine', 'Chemical', 'MESH:D014750', (126, 137)) ('PGL', 'Phenotype', 'HP:0002668', (271, 274)) ('toxicity', 'Disease', 'MESH:D064420', (193, 201)) ('dacarbazine', 'Chemical', 'MESH:D003606', (142, 153)) ('toxicity', 'Disease', (193, 201)) 93625 23626551 Meanwhile, genetic testing was performed and fluorescence in situ hybridization analysis, using the LSI EWSR1 break-apart probe, revealed the translocation 22q12 for the EWSR1 gene, translocation characteristic of Ewing's sarcoma/pPNET, confirming diagnosis. ('EWSR1', 'Gene', (104, 109)) ("Ewing's sarcoma", 'Disease', 'MESH:C563168', (214, 229)) ('EWSR1', 'Gene', (170, 175)) ("Ewing's sarcoma", 'Disease', (214, 229)) ('pPNET', 'Phenotype', 'HP:0030067', (230, 235)) ("Ewing's sarcoma", 'Phenotype', 'HP:0012254', (214, 229)) ('EWSR1', 'Gene', '2130', (170, 175)) ('EWSR1', 'Gene', '2130', (104, 109)) ('translocation 22q12', 'Var', (142, 161)) ('sarcoma', 'Phenotype', 'HP:0100242', (222, 229)) 93629 23626551 The control CT scan showed a volume reduction of the lesion D9-D10 and the appearance of a solid new lesion with compression of the right-side profile of VI and VIII hepatic segments attributable to recurrent disease (fig. ('VIII', 'Gene', '1351', (161, 165)) ('D9-D10', 'Var', (60, 66)) ('compression', 'NegReg', (113, 124)) ('VIII', 'Gene', (161, 165)) ('reduction', 'NegReg', (36, 45)) 93641 23626551 Simultaneously, genetic tests were performed: DNA sequencing showed an SDH-B mutation, characteristic of familial PGL syndrome 4. ('SDH-B', 'Gene', '6390', (71, 76)) ('mutation', 'Var', (77, 85)) ('familial PGL syndrome', 'Disease', (105, 126)) ('SDH-B', 'Gene', (71, 76)) ('familial PGL syndrome', 'Disease', 'MESH:D010235', (105, 126)) ('PGL', 'Phenotype', 'HP:0002668', (114, 117)) 93659 23626551 These data and the evidence, in preclinical models, that blocking VEGFR-2 leads to suppression of Ewing's sarcoma tumor growth and tumor vessel formation, indicate the VEGF pathway is an important therapeutic target. ('VEGF', 'Gene', (66, 70)) ('VEGFR-2', 'Gene', '3791', (66, 73)) ("Ewing's sarcoma tumor", 'Disease', (98, 119)) ('blocking', 'Var', (57, 65)) ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('suppression', 'NegReg', (83, 94)) ('tumor', 'Disease', 'MESH:D009369', (131, 136)) ("Ewing's sarcoma tumor", 'Disease', 'MESH:C563168', (98, 119)) ("Ewing's sarcoma", 'Phenotype', 'HP:0012254', (98, 113)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('VEGF', 'Gene', '7422', (168, 172)) ('sarcoma', 'Phenotype', 'HP:0100242', (106, 113)) ('VEGF', 'Gene', '7422', (66, 70)) ('VEGFR-2', 'Gene', (66, 73)) ('tumor', 'Disease', (114, 119)) ('tumor', 'Disease', (131, 136)) ('VEGF', 'Gene', (168, 172)) 93660 23626551 Also, the translocation t(11;22) is common in ESFT and produces the chimeric EWS/Fli-1 fusion gene found in 85% of patients with ESFT. ('patients', 'Species', '9606', (115, 123)) ('EWS', 'Gene', '2130', (77, 80)) ('EWS', 'Gene', (77, 80)) ('translocation t', 'Var', (10, 25)) ('ESFT', 'Disease', (46, 50)) ('Fli-1', 'Gene', (81, 86)) ('Fli-1', 'Gene', '2313', (81, 86)) ('ESFT', 'Disease', (129, 133)) 93662 23626551 Our pPNET patient treated with sunitinib, carrying the translocation 22q12 for the EWSR1 gene, showed a significant radiological response with the almost complete necrosis of the perihepatic metastatic lesion (a typical radiological response of some targeted agents) and a progression-free survival of 9 months. ('necrosis of the perihepatic metastatic lesion', 'Disease', (163, 208)) ('EWSR1', 'Gene', (83, 88)) ('sunitinib', 'Chemical', 'MESH:D000077210', (31, 40)) ('necrosis of the perihepatic metastatic lesion', 'Disease', 'MESH:C537936', (163, 208)) ('EWSR1', 'Gene', '2130', (83, 88)) ('patient', 'Species', '9606', (10, 17)) ('pPNET', 'Phenotype', 'HP:0030067', (4, 9)) ('translocation 22q12', 'Var', (55, 74)) 93666 23626551 This state of pseudo-hypoxia is functionally analogous to defects in the VHL protein in renal cell carcinoma, where antiangiogenic therapy and sunitinib are effective. ('sunitinib', 'Chemical', 'MESH:D000077210', (143, 152)) ('renal cell carcinoma', 'Disease', (88, 108)) ('hypoxia', 'Disease', 'MESH:D000860', (21, 28)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (88, 108)) ('VHL', 'Disease', 'MESH:D006623', (73, 76)) ('hypoxia', 'Disease', (21, 28)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (88, 108)) ('VHL', 'Disease', (73, 76)) ('carcinoma', 'Phenotype', 'HP:0030731', (99, 108)) ('defects', 'Var', (58, 65)) 93668 23626551 Similarly our patient, with SDH-B mutation, reported a clinical benefit with pain disappearance, an evident PET response and a progression-free survival of 36 weeks, confirming this treatment as very interesting in this setting of patients. ('patients', 'Species', '9606', (231, 239)) ('mutation', 'Var', (34, 42)) ('PET response', 'CPA', (108, 120)) ('pain', 'Phenotype', 'HP:0012531', (77, 81)) ('SDH-B', 'Gene', '6390', (28, 33)) ('patient', 'Species', '9606', (14, 21)) ('pain', 'Disease', 'MESH:D010146', (77, 81)) ('pain', 'Disease', (77, 81)) ('benefit', 'PosReg', (64, 71)) ('patient', 'Species', '9606', (231, 238)) ('SDH-B', 'Gene', (28, 33)) 93809 32784267 177Lu-DOTATATE therapy in metastatic/inoperable pheochromocytoma-paraganglioma 177Lu-DOTATATE-based peptide receptor radionuclide therapy (PRRT) is a promising therapy for metastatic and/or inoperable pheochromocytoma and paraganglioma (PPGL). ('radionuclide', 'Chemical', 'MESH:D011868', (118, 130)) ('PPGL', 'Chemical', '-', (238, 242)) ('PRRT', 'Chemical', '-', (140, 144)) ('pheochromocytoma-paraganglioma', 'Disease', (49, 79)) ('177Lu-DOTATATE', 'Chemical', '-', (80, 94)) ('paraganglioma', 'Phenotype', 'HP:0002668', (223, 236)) ('paraganglioma', 'Phenotype', 'HP:0002668', (66, 79)) ('177Lu-DOTATATE-based', 'Var', (80, 100)) ('pheochromocytoma-paraganglioma', 'Disease', 'MESH:D010673', (49, 79)) ('177Lu-DOTATATE', 'Chemical', '-', (1, 15)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (202, 218)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (202, 236)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (49, 65)) 93815 32784267 On linear regression analysis the presence of PGL (P= 0.044) and baseline SUVmax >21 (P < 0.0001) were significant positive predictors of early response to PRRT. ('SUVmax', 'MPA', (74, 80)) ('PRRT', 'Chemical', '-', (156, 160)) ('presence', 'Var', (34, 42)) 93877 32784267 Change in SUVmax of >15% after PRRT had good agreement with the diagnosis of PD and CD based on RECIST 1.1, as shown in Fig. ('SUVmax', 'MPA', (10, 16)) ('CD', 'Chemical', '-', (84, 86)) ('Change', 'Var', (0, 6)) ('PRRT', 'Chemical', '-', (31, 35)) ('PD', 'Disease', 'MESH:D010300', (77, 79)) 93891 32784267 Clinical improvement is seen in a majority of patients subjected to PRRT, with worsening of symptoms being documented in only two patients (13%) who had PD. ('patients', 'Species', '9606', (46, 54)) ('PRRT', 'Var', (68, 72)) ('improvement', 'PosReg', (9, 20)) ('patients', 'Species', '9606', (130, 138)) ('PD', 'Disease', 'MESH:D010300', (153, 155)) ('PRRT', 'Chemical', '-', (68, 72)) 93894 32784267 Four (44%) of the nine patients had increased PFNMN level after PRRT which concurred with progressive disease in three patients whereas in the other with stable disease, the increase in PFNMN was milder (<20%). ('PRRT', 'Chemical', '-', (64, 68)) ('PFNMN', 'Chemical', '-', (46, 51)) ('PFNMN', 'Chemical', '-', (186, 191)) ('patients', 'Species', '9606', (23, 31)) ('patients', 'Species', '9606', (119, 127)) ('PRRT', 'Var', (64, 68)) ('increased', 'PosReg', (36, 45)) ('PFNMN level', 'MPA', (46, 57)) 93911 32784267 On the other hand, the poor response may be due to their more dedifferentiated nature as suggested by poor uptake of 131I-MIBG as well as 68Ga-DOTATATE at baseline. ('68Ga-DOTATATE', 'Chemical', '-', (138, 151)) ('poor', 'NegReg', (102, 106)) ('131I-MIBG', 'Var', (117, 126)) ('uptake', 'MPA', (107, 113)) ('MIBG', 'Chemical', 'MESH:D019797', (122, 126)) 93924 32784267 It is possible that a trend for better response among patients with HNPGL than those with sPGL might be due to association of the former with mutations in SDHD rather than in SDHB. ('mutations', 'Var', (142, 151)) ('SDHD', 'Gene', (155, 159)) ('patients', 'Species', '9606', (54, 62)) ('response', 'MPA', (39, 47)) ('association', 'Interaction', (111, 122)) ('SDHB', 'Gene', '6390', (175, 179)) ('SDHB', 'Gene', (175, 179)) ('better', 'PosReg', (32, 38)) ('SDHD', 'Gene', '6392', (155, 159)) 93943 30072739 Emerging biomarkers for anti-PD-1 response include the expression level of its ligand PD-L1 , mutation burden or mismatch-repair deficiency , and tumor-infiltrating lymphocytes . ('PD-1', 'Gene', '5133', (29, 33)) ('deficiency', 'Disease', 'MESH:D007153', (129, 139)) ('expression level', 'MPA', (55, 71)) ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('PD-L1', 'Gene', '29126', (86, 91)) ('tumor', 'Disease', (146, 151)) ('mismatch-repair', 'MPA', (113, 128)) ('mutation burden', 'Var', (94, 109)) ('deficiency', 'Disease', (129, 139)) ('PD-L1', 'Gene', (86, 91)) ('PD-1', 'Gene', (29, 33)) ('tumor', 'Disease', 'MESH:D009369', (146, 151)) 93945 30072739 Somatic mutations in oncogenes and tumor suppressors represent the most classic biomarkers as they are the main direct drivers of cancer progression . ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('cancer', 'Disease', 'MESH:D009369', (130, 136)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('cancer', 'Disease', (130, 136)) ('tumor', 'Disease', (35, 40)) ('oncogenes', 'Gene', (21, 30)) ('cancer', 'Phenotype', 'HP:0002664', (130, 136)) ('Somatic mutations', 'Var', (0, 17)) 93948 30072739 Several other types of non-coding RNAs, such as long-noncoding RNAs (lncRNAs) , enhancer RNAs and circular RNAs have also been implicated in various cancer types . ('circular RNAs', 'Var', (99, 112)) ('cancer', 'Phenotype', 'HP:0002664', (151, 157)) ('enhancer', 'PosReg', (80, 88)) ('implicated', 'Reg', (129, 139)) ('cancer', 'Disease', (151, 157)) ('long-noncoding', 'Var', (48, 62)) ('cancer', 'Disease', 'MESH:D009369', (151, 157)) 93958 30072739 Here we performed a pan-cancer analysis of ~22 nt size-selected small RNA-seq (smRNA-seq) datasets from TCGA, exploring the expression of small RNAs mapping to annotated human snoRNAs in 10,262 patient samples across 32 cancer types. ('patient', 'Species', '9606', (194, 201)) ('small', 'Var', (138, 143)) ('cancer', 'Phenotype', 'HP:0002664', (24, 30)) ('snoRNA', 'Gene', '85390', (176, 182)) ('cancer', 'Phenotype', 'HP:0002664', (220, 226)) ('cancer', 'Disease', (24, 30)) ('cancer', 'Disease', 'MESH:D009369', (24, 30)) ('cancer', 'Disease', 'MESH:D009369', (220, 226)) ('human', 'Species', '9606', (170, 175)) ('cancer', 'Disease', (220, 226)) ('snoRNA', 'Gene', (176, 182)) 93972 30072739 This pan-cancer sdRNA transcriptome is derived from several subtypes of snoRNAs with distinct structures and motifs, such as canonical C/D box snoRNAs, H/ACA box snoRNAs, C/D box small Cajal body RNAs (scaRNAs), H/ACA box scaRNAs, hybrid snoRNAs, and several other subtypes (Figure 1b, Table S1, Table S2). ('snoRNA', 'Gene', '85390', (143, 149)) ('cancer', 'Disease', (9, 15)) ('snoRNA', 'Gene', (162, 168)) ('snoRNA', 'Gene', '85390', (72, 78)) ('snoRNA', 'Gene', '85390', (162, 168)) ('snoRNA', 'Gene', '85390', (238, 244)) ('cancer', 'Phenotype', 'HP:0002664', (9, 15)) ('snoRNA', 'Gene', (143, 149)) ('C/D box', 'Var', (171, 178)) ('snoRNA', 'Gene', (72, 78)) ('cancer', 'Disease', 'MESH:D009369', (9, 15)) ('snoRNA', 'Gene', (238, 244)) 93977 30072739 In the case of C/D snoRNAs, these analyses revealed three classes of read distributions, corresponding to 5' sdRNAs, 3' sdRNAs, or mixed sdRNAs (Figure 1c). ('D snoRNAs', 'Phenotype', 'HP:0025267', (17, 26)) ('snoRNA', 'Gene', (19, 25)) ('C/D', 'Var', (15, 18)) ('mixed', 'Disease', (131, 136)) ('snoRNA', 'Gene', '85390', (19, 25)) ('D snoRNA', 'Phenotype', 'HP:0025267', (17, 25)) 93987 30072739 The sdRNA transcriptome exhibited a wide dynamic range of expression across all cancers (Figure S5a), such that 300.13 +- 4.21 (mean +- s.e.m.) ('300.13 +- 4.21', 'Var', (112, 126)) ('cancers', 'Disease', 'MESH:D009369', (80, 87)) ('cancer', 'Phenotype', 'HP:0002664', (80, 86)) ('cancers', 'Disease', (80, 87)) ('sdRNA', 'Gene', (4, 9)) ('cancers', 'Phenotype', 'HP:0002664', (80, 87)) 94069 30072739 For instance, high expression of sdRNAs derived from SNORA116, an H/ACA snoRNA, was connected to poorer survival in three independent cohorts: lower grade gliomas (LGG), liver hepatocellular carcinoma (LIHC), and uterine corpus endometrial carcinoma (UCEC) (Figure 7b). ('endometrial carcinoma', 'Phenotype', 'HP:0012114', (228, 249)) ('gliomas', 'Phenotype', 'HP:0009733', (155, 162)) ('expression', 'MPA', (19, 29)) ('snoRNA', 'Gene', '85390', (72, 78)) ('corpus endometrial carcinoma', 'Disease', (221, 249)) ('corpus endometrial carcinoma', 'Disease', 'MESH:D016889', (221, 249)) ('hepatocellular carcinoma', 'Phenotype', 'HP:0001402', (176, 200)) ('ACA snoRNA', 'Phenotype', 'HP:0025267', (68, 78)) ('carcinoma', 'Phenotype', 'HP:0030731', (191, 200)) ('liver hepatocellular carcinoma', 'Disease', 'MESH:D006528', (170, 200)) ('liver hepatocellular carcinoma', 'Disease', (170, 200)) ('glioma', 'Phenotype', 'HP:0009733', (155, 161)) ('SNORA116', 'Var', (53, 61)) ('poorer', 'NegReg', (97, 103)) ('carcinoma', 'Phenotype', 'HP:0030731', (240, 249)) ('snoRNA', 'Gene', (72, 78)) ('gliomas', 'Disease', (155, 162)) ('gliomas', 'Disease', 'MESH:D005910', (155, 162)) 94070 30072739 As another example, high levels of sdRNAs from SNORD145, a CD snoRNA, were associated with shorter survival times in kidney clear cell carcinoma (KIRC), sarcoma (SARC), and uterine corpus endometrial carcinoma (UCEC) (Figure 7c). ('sarcoma', 'Disease', 'MESH:D012509', (153, 160)) ('corpus endometrial carcinoma', 'Disease', 'MESH:D016889', (181, 209)) ('endometrial carcinoma', 'Phenotype', 'HP:0012114', (188, 209)) ('carcinoma', 'Phenotype', 'HP:0030731', (135, 144)) ('sarcoma', 'Disease', (153, 160)) ('SARC', 'Phenotype', 'HP:0100242', (162, 166)) ('carcinoma', 'Phenotype', 'HP:0030731', (200, 209)) ('kidney clear cell carcinoma', 'Disease', 'MESH:C538614', (117, 144)) ('SNORD145', 'Var', (47, 55)) ('shorter', 'NegReg', (91, 98)) ('sarcoma', 'Phenotype', 'HP:0100242', (153, 160)) ('D snoRNA', 'Phenotype', 'HP:0025267', (60, 68)) ('snoRNA', 'Gene', (62, 68)) ('survival times', 'CPA', (99, 113)) ('corpus endometrial carcinoma', 'Disease', (181, 209)) ('sdRNAs', 'MPA', (35, 41)) ('snoRNA', 'Gene', '85390', (62, 68)) ('kidney clear cell carcinoma', 'Disease', (117, 144)) 94071 30072739 SdRNAs from SNORA116 and SNORD145 thus appear to be indicators of cancers with a more aggressive course. ('cancer', 'Phenotype', 'HP:0002664', (66, 72)) ('SNORA116', 'Var', (12, 20)) ('cancers', 'Phenotype', 'HP:0002664', (66, 73)) ('SNORD145', 'Var', (25, 33)) ('cancers', 'Disease', (66, 73)) ('cancers', 'Disease', 'MESH:D009369', (66, 73)) 94089 30072739 Because the ImmuneSurv score analyses were conducted in a cancer type-specific manner, we then sought a global assessment of sdRNAs and their relationships to cancer immunity regardless of cancer type (PANCAN32), by compiling all sdRNAs that were found to be significant in any of the 5 categories: PD-L1, CD8+ T cell abundance, GZMA, survival, or copy number variation (supplemental results, Figure S9) in any cancer type. ('cancer', 'Phenotype', 'HP:0002664', (58, 64)) ('cancer', 'Disease', 'MESH:D009369', (411, 417)) ('cancer immunity regardless of cancer', 'Disease', 'MESH:D009369', (159, 195)) ('cancer', 'Disease', 'MESH:D009369', (189, 195)) ('CD8', 'Gene', (306, 309)) ('GZMA', 'Gene', '3001', (329, 333)) ('cancer', 'Disease', (159, 165)) ('cancer', 'Phenotype', 'HP:0002664', (159, 165)) ('cancer', 'Disease', 'MESH:D009369', (58, 64)) ('GZMA', 'Gene', (329, 333)) ('PD-L1', 'Gene', (299, 304)) ('PD-L1', 'Gene', '29126', (299, 304)) ('cancer', 'Disease', (411, 417)) ('cancer', 'Disease', 'MESH:D009369', (159, 165)) ('CD8', 'Gene', '925', (306, 309)) ('copy number variation', 'Var', (348, 369)) ('cancer', 'Disease', (189, 195)) ('cancer', 'Phenotype', 'HP:0002664', (411, 417)) ('cancer', 'Phenotype', 'HP:0002664', (189, 195)) ('cancer immunity regardless of cancer', 'Disease', (159, 195)) ('cancer', 'Disease', (58, 64)) 94100 30072739 Of note, SNORD115 has been demonstrated to act as a regulator of alternative splicing , and its deletion is sufficient to cause Prader-Willi syndrome. ('SNORD115', 'Gene', '692218', (9, 17)) ('cause', 'Reg', (122, 127)) ('deletion', 'Var', (96, 104)) ('Prader-Willi syndrome', 'Disease', 'MESH:D011218', (128, 149)) ('Prader-Willi syndrome', 'Disease', (128, 149)) ('alternative splicing', 'MPA', (65, 85)) ('SNORD115', 'Gene', (9, 17)) 94127 30072739 GISTIC 2.0 copy number variation calls were obtained from the GDAC Firehose (http://gdac.broadinstitute.org/) on September 2017. ('copy number variation', 'Var', (11, 32)) ('DAC', 'Gene', (63, 66)) ('DAC', 'Gene', '6468', (63, 66)) 94129 30072739 Raw fastq files for independent smRNA-seq datasets (GSE33858, GSE46622, E-MTAB-3494) were accessed by NCBI GEO (https://www.ncbi.nlm.nih.gov/geo/) or EBI (https://www.ebi.ac.uk/). ('EBI', 'Gene', (150, 153)) ('GSE46622', 'Var', (62, 70)) ('GSE33858', 'Var', (52, 60)) ('EBI', 'Gene', '6907', (150, 153)) ('ebi', 'Gene', '6907', (167, 170)) ('ebi', 'Gene', (167, 170)) 94155 30072739 As these tables report the precise genomic coordinates in which the amplification or deletion was identified, we utilized a q < 0.05 threshold and subsequently intersected the coordinates with the snoRNA annotations . ('deletion', 'Var', (85, 93)) ('snoRNA', 'Gene', (197, 203)) ('snoRNA', 'Gene', '85390', (197, 203)) 94156 30072739 Amplification and deletion calls for individual snoRNAs were then compiled into separate tables. ('deletion', 'Var', (18, 26)) ('snoRNA', 'Gene', (48, 54)) ('snoRNA', 'Gene', '85390', (48, 54)) 94159 30072739 For pan-cancer analysis, we considered all sdRNAs that were found to be significant in at least one cancer type across the following 5 analyses: CD274 correlation, GMZA correlation, CD8+ T cell abundance, copy number variation, and survival. ('cancer', 'Disease', (8, 14)) ('CD8', 'Gene', (182, 185)) ('cancer', 'Phenotype', 'HP:0002664', (100, 106)) ('CD8', 'Gene', '925', (182, 185)) ('CD274', 'Gene', '29126', (145, 150)) ('cancer', 'Phenotype', 'HP:0002664', (8, 14)) ('cancer', 'Disease', (100, 106)) ('cancer', 'Disease', 'MESH:D009369', (100, 106)) ('copy number variation', 'Var', (205, 226)) ('cancer', 'Disease', 'MESH:D009369', (8, 14)) ('CD274', 'Gene', (145, 150)) 94165 30072739 Thus, for the example above (NNSNSN), sdRNAs from snoRNA X were found to be significantly associated with survival and significant for CNV in cancer type Y. ('cancer', 'Disease', 'MESH:D009369', (142, 148)) ('snoRNA', 'Gene', (50, 56)) ('cancer', 'Phenotype', 'HP:0002664', (142, 148)) ('associated with', 'Reg', (90, 105)) ('sdRNAs', 'Var', (38, 44)) ('snoRNA', 'Gene', '85390', (50, 56)) ('cancer', 'Disease', (142, 148)) 94229 30105106 As in our patient, enlarging uterus, changes of intra-abdominal pressure during fetal movements and compression of the growing tumor by pregnancy may lead to the release of catecholamines and the occurrence of spells. ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('lead to', 'Reg', (150, 157)) ('catecholamines', 'Chemical', 'MESH:D002395', (173, 187)) ('tumor', 'Disease', (127, 132)) ('changes', 'Var', (37, 44)) ('patient', 'Species', '9606', (10, 17)) ('enlarging uterus', 'Phenotype', 'HP:0100878', (19, 35)) ('tumor', 'Disease', 'MESH:D009369', (127, 132)) ('release of catecholamines', 'MPA', (162, 187)) ('spells', 'Disease', (210, 216)) 94255 30105106 Prevalence of VHL gene abnormality is approximately 1 in 36,000 individuals. ('VHL', 'Gene', (14, 17)) ('abnormality', 'Var', (23, 34)) ('VHL', 'Gene', '7428', (14, 17)) 94259 30105106 autosomal dominant with 100% penetrance-80% de novo mutation-20% somatic mosaicism:incidence not known Genetics and pattern of inheritance are Genetic testing for VHL is usually done on peripheral blood lymphocytes which can be negative if the patient expresses mosaicism for the VHL gene. ('VHL', 'Gene', '7428', (281, 284)) ('VHL', 'Gene', (281, 284)) ('VHL', 'Gene', (164, 167)) ('mosaicism', 'Var', (263, 272)) ('VHL', 'Gene', '7428', (164, 167)) ('patient', 'Species', '9606', (245, 252)) 94269 30105106 Affected individuals have a 50 percent probability of transmitting the VHL mutation to each offspring. ('VHL', 'Gene', (71, 74)) ('transmitting', 'Reg', (54, 66)) ('mutation', 'Var', (75, 83)) ('VHL', 'Gene', '7428', (71, 74)) 94271 30105106 As the somatic mosaicism cannot be clinically diagnosed those patients should be informed that the risk of the offspring to get VHL may be as high as 50% and the offspring will have severe disease as 100% of their cells carry the mutation. ('VHL', 'Gene', '7428', (128, 131)) ('have', 'Reg', (177, 181)) ('mutation', 'Var', (230, 238)) ('patients', 'Species', '9606', (62, 70)) ('VHL', 'Gene', (128, 131)) 94291 21521331 Genetic testing for pheochromocytoma was also performed including examination for mutations in ret proto-oncogene (RET), succinate dehydrogenase complex, subunit B (SDHB), von Hippel-Lindau tumor suppressor gene (VHL), which were also negative. ('von Hippel-Lindau tumor', 'Disease', (172, 195)) ('VHL', 'Disease', (213, 216)) ('VHL', 'Disease', 'MESH:D006623', (213, 216)) ('ret', 'Gene', (95, 98)) ('ret', 'Gene', '5979', (95, 98)) ('succinate dehydrogenase complex, subunit B', 'Gene', '6390', (121, 163)) ('tumor', 'Phenotype', 'HP:0002664', (190, 195)) ('SDHB', 'Gene', '6390', (165, 169)) ('RET', 'Gene', '5979', (115, 118)) ('von Hippel-Lindau tumor', 'Disease', 'MESH:D006623', (172, 195)) ('mutations', 'Var', (82, 91)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (20, 36)) ('pheochromocytoma', 'Disease', (20, 36)) ('SDHB', 'Gene', (165, 169)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (20, 36)) ('RET', 'Gene', (115, 118)) 94356 25741090 A 10-15-fold higher annual incidence of ACC has been reported in children in southern Brazil when compared to children <= 15 years old in the United States due to a point mutation in the p53 tumor suppressor gene. ('p53', 'Gene', (187, 190)) ('ACC', 'Phenotype', 'HP:0006744', (40, 43)) ('point mutation', 'Var', (165, 179)) ('ACC', 'Disease', (40, 43)) ('p53', 'Gene', '7157', (187, 190)) ('tumor', 'Phenotype', 'HP:0002664', (191, 196)) 94374 25741090 The presence of these findings dramatically increases the likelihood of adrenal metastasis in patients with known extra-adrenal malignancy. ('extra-adrenal malignancy', 'Disease', (114, 138)) ('extra-adrenal malignancy', 'Disease', 'MESH:D010236', (114, 138)) ('adrenal malignancy', 'Disease', 'MESH:D009369', (120, 138)) ('presence', 'Var', (4, 12)) ('adrenal metastasis', 'CPA', (72, 90)) ('increases', 'PosReg', (44, 53)) ('adrenal malignancy', 'Phenotype', 'HP:0100631', (120, 138)) 94394 23864328 Kaplan-Meier analysis demonstrated that the hormonal non-PD (P = 0.026), objective non-PD (P = 0.0002), multiple-time 131I-MIBG therapy (P = 0.013), and no symptom related to bone metastases (P = 0.024) were significantly associated with good prognosis. ('131I-MIBG', 'Var', (118, 127)) ('bone metastases', 'Disease', 'MESH:D009362', (175, 190)) ('bone metastases', 'Disease', (175, 190)) ('PD', 'Chemical', '-', (87, 89)) ('PD', 'Chemical', '-', (57, 59)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (118, 127)) 94396 23864328 The hormonal and objective responses to the first low-dose 131I-MIBG therapy as well as complication of hypertension and symptoms related to bone metastases may be prognostic factors in patients with malignant pheochromocytoma and paraganglioma. ('131I-MIBG', 'Chemical', 'MESH:D019797', (59, 68)) ('bone metastases', 'Disease', 'MESH:D009362', (141, 156)) ('hypertension', 'Disease', 'MESH:D006973', (104, 116)) ('131I-MIBG', 'Var', (59, 68)) ('bone metastases', 'Disease', (141, 156)) ('malignant pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (200, 244)) ('hypertension', 'Disease', (104, 116)) ('paraganglioma', 'Phenotype', 'HP:0002668', (231, 244)) ('hypertension', 'Phenotype', 'HP:0000822', (104, 116)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (210, 226)) ('patients', 'Species', '9606', (186, 194)) 94399 23864328 For the high-dose 131I-MIBG therapy, the risk-adapted side effect of bone marrow suppression is usually rescued by autologous stem cell rescue. ('bone marrow suppression', 'Phenotype', 'HP:0005528', (69, 92)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (18, 27)) ('bone marrow suppression', 'Disease', 'MESH:D001855', (69, 92)) ('bone marrow suppression', 'Disease', (69, 92)) ('131I-MIBG', 'Var', (18, 27)) 94407 23864328 In clinical practices, we perform the low-dose 131I-MIBG therapy aiming at symptom palliation, tumor arrest, and/or tumor reduction in patients with advanced malignant pheochromocytoma and paraganglioma. ('tumor arrest', 'Disease', (95, 107)) ('patients', 'Species', '9606', (135, 143)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (168, 184)) ('malignant pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (158, 202)) ('131I-MIBG', 'Var', (47, 56)) ('paraganglioma', 'Phenotype', 'HP:0002668', (189, 202)) ('tumor', 'Disease', 'MESH:D009369', (116, 121)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (47, 56)) ('tumor', 'Disease', 'MESH:D009369', (95, 100)) ('tumor arrest', 'Disease', 'MESH:D006323', (95, 107)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('tumor', 'Disease', (116, 121)) ('tumor', 'Disease', (95, 100)) 94409 23864328 Ultimately, we aspire to total eradication of tumor not only by repeated low-dose 131I-MIBG therapy but also by combination of the therapy and surgery for the patients with less advanced cases. ('tumor', 'Phenotype', 'HP:0002664', (46, 51)) ('eradication', 'NegReg', (31, 42)) ('131I-MIBG', 'Var', (82, 91)) ('tumor', 'Disease', (46, 51)) ('patients', 'Species', '9606', (159, 167)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (82, 91)) ('tumor', 'Disease', 'MESH:D009369', (46, 51)) 94411 23864328 reviewed that the responders to first low-dose 131I-MIBG therapy had a longer mean period of survival time in 116 patients at 24 centers in 10 countries. ('longer', 'PosReg', (71, 77)) ('131I-MIBG', 'Var', (47, 56)) ('survival time', 'CPA', (93, 106)) ('patients', 'Species', '9606', (114, 122)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (47, 56)) 94412 23864328 showed that patients with PD at 6 months after the last low-dose 131I-MIBG therapy had poor prognosis compared to those with stability and response in patients with neuroendocrine tumors, which mainly consisted of carcinoids. ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (165, 185)) ('patients', 'Species', '9606', (12, 20)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (165, 186)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (165, 186)) ('tumor', 'Phenotype', 'HP:0002664', (180, 185)) ('tumors', 'Phenotype', 'HP:0002664', (180, 186)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (65, 74)) ('patients', 'Species', '9606', (151, 159)) ('131I-MIBG', 'Var', (65, 74)) ('neuroendocrine tumors', 'Disease', (165, 186)) ('carcinoids', 'Disease', (214, 224)) ('PD', 'Chemical', '-', (26, 28)) ('carcinoids', 'Phenotype', 'HP:0100570', (214, 224)) 94439 23864328 Anemia was classified as follows (hemoglobin range): grade 0, within normal limits; grade 1, <11.2 to 10.0 g/dL; grade2, <10.0 to 8.0 g/dL, grade 3, <8.0 g/dL; transfusion indicated: grade 4, life-threatening consequences, urgent intervention indicated; and grade 5, death. ('<10.0 to', 'Var', (121, 129)) ('<11.2 to', 'Var', (93, 101)) ('Anemia', 'Phenotype', 'HP:0001903', (0, 6)) ('Anemia', 'Disease', (0, 6)) ('Anemia', 'Disease', 'MESH:D000740', (0, 6)) 94449 23864328 The median time from diagnosis of metastases to the therapy with 131I-MIBG was 22 months (range 2-108 months). ('131I-MIBG', 'Chemical', 'MESH:D019797', (65, 74)) ('131I-MIBG', 'Var', (65, 74)) ('metastases', 'Disease', (34, 44)) ('metastases', 'Disease', 'MESH:D009362', (34, 44)) 94469 23864328 Table 3 represents the numbers of patients with bone marrow suppressions through the first low-dose 131I-MIBG therapy in terms of anemia (11/25), white blood cell decrease (13/25), and platelet count decrease (7/25) according to the CTCAE grading. ('platelet count', 'CPA', (185, 199)) ('bone marrow suppression', 'Disease', 'MESH:D001855', (48, 71)) ('white blood cell decrease', 'Phenotype', 'HP:0001882', (146, 171)) ('anemia', 'Disease', (130, 136)) ('bone marrow suppression', 'Disease', (48, 71)) ('platelet count decrease', 'Phenotype', 'HP:0001873', (185, 208)) ('anemia', 'Disease', 'MESH:D000740', (130, 136)) ('white blood cell', 'CPA', (146, 162)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (100, 109)) ('patients', 'Species', '9606', (34, 42)) ('anemia', 'Phenotype', 'HP:0001903', (130, 136)) ('bone marrow suppression', 'Phenotype', 'HP:0005528', (48, 71)) ('decrease', 'NegReg', (163, 171)) ('131I-MIBG', 'Var', (100, 109)) ('decrease', 'NegReg', (200, 208)) 94495 23864328 Additionally, median time from diagnosis of metastases to the first 131I-MIBG therapy was 22 months (range 2-108 months). ('131I-MIBG', 'Chemical', 'MESH:D019797', (68, 77)) ('metastases', 'Disease', 'MESH:D009362', (44, 54)) ('metastases', 'Disease', (44, 54)) ('131I-MIBG', 'Var', (68, 77)) 94509 25295074 Germline variations in succinate dehydrogenase (SDH) genes, such as the SDHx mutation, may be significant in sporadic HNP and familial paraganglioma. ('succinate dehydrogenase', 'Gene', (23, 46)) ('SDH', 'Gene', '6390', (48, 51)) ('HNP', 'Phenotype', 'HP:0002864', (118, 121)) ('mutation', 'Var', (77, 85)) ('SDH', 'Gene', '6390', (72, 75)) ('familial paraganglioma', 'Disease', (126, 148)) ('SDH', 'Gene', (48, 51)) ('paraganglioma', 'Phenotype', 'HP:0002668', (135, 148)) ('SDH', 'Gene', (72, 75)) ('sporadic HNP', 'Disease', (109, 121)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (126, 148)) ('significant', 'Reg', (94, 105)) ('SDHx', 'Chemical', '-', (72, 76)) ('succinate dehydrogenase', 'Gene', '6390', (23, 46)) 94531 25295074 Baysal et al first reported the association between SDH subunit D germline mutations and hereditary paragangliomas. ('hereditary paragangliomas', 'Disease', 'MESH:D010235', (89, 114)) ('SDH', 'Gene', '6390', (52, 55)) ('hereditary paragangliomas', 'Disease', (89, 114)) ('paraganglioma', 'Phenotype', 'HP:0002668', (100, 113)) ('paragangliomas', 'Phenotype', 'HP:0002668', (100, 114)) ('SDH', 'Gene', (52, 55)) ('germline mutations', 'Var', (66, 84)) 94574 25194052 Furthermore, genetic mutations may require more aggressive follow-up and malignant paragangliomas seem to exhibit a more aggressive behavior than malignant pheochromocytomas. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (156, 173)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('paragangliomas', 'Phenotype', 'HP:0002668', (83, 97)) ('malignant paragangliomas', 'Disease', (73, 97)) ('malignant pheochromocytomas', 'Disease', (146, 173)) ('genetic mutations', 'Var', (13, 30)) ('malignant pheochromocytomas', 'Disease', 'MESH:D010673', (146, 173)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (121, 140)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (73, 97)) 94581 23868299 Pheochromocytoma in an 8-year-old patient with Multiple Endocrine Neoplasia Type 2A: Implications for Screening Multiple endocrine neoplasia type 2 (MEN2) is an autosomal dominant hereditary cancer syndrome caused by mutations in the RET proto-oncogene. ('Endocrine Neoplasia', 'Phenotype', 'HP:0100568', (56, 75)) ('neoplasia', 'Phenotype', 'HP:0002664', (131, 140)) ('RET', 'Gene', (234, 237)) ('patient', 'Species', '9606', (34, 41)) ('Multiple Endocrine Neoplasia Type', 'Disease', (47, 80)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (121, 140)) ('MEN', 'Species', '9606', (149, 152)) ('Neoplasia', 'Phenotype', 'HP:0002664', (66, 75)) ('Multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (112, 147)) ('cancer', 'Phenotype', 'HP:0002664', (191, 197)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('caused by', 'Reg', (207, 216)) ('Multiple Endocrine Neoplasia Type', 'Disease', 'MESH:D018761', (47, 80)) ('autosomal dominant hereditary cancer syndrome', 'Disease', 'MESH:D009386', (161, 206)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('Pheochromocytoma', 'Disease', (0, 16)) ('Multiple endocrine neoplasia type 2', 'Disease', (112, 147)) ('RET', 'Gene', '5979', (234, 237)) ('autosomal dominant hereditary cancer syndrome', 'Disease', (161, 206)) ('mutations', 'Var', (217, 226)) 94583 23868299 We present the case of an 8-year-old female with known MEN 2A, C634Y RET mutation, found to have markedly elevated plasma normetanephrines and total metanephrines, and diagnosed with a 6 cm pheochromocytoma requiring laparoscopic unilateral adrenalectomy. ('plasma normetanephrines', 'MPA', (115, 138)) ('pheochromocytoma', 'Disease', (190, 206)) ('total metanephrines', 'MPA', (143, 162)) ('RET', 'Gene', '5979', (69, 72)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (190, 206)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (190, 206)) ('C634Y', 'Mutation', 'rs75996173', (63, 68)) ('metanephrines', 'Chemical', 'MESH:D008676', (125, 138)) ('RET', 'Gene', (69, 72)) ('elevated', 'PosReg', (106, 114)) ('pheochromocytoma requiring laparoscopic unilateral adrenalectomy', 'Phenotype', 'HP:0006748', (190, 254)) ('metanephrines', 'Chemical', 'MESH:D008676', (149, 162)) ('MEN 2A', 'Gene', '5979', (55, 61)) ('MEN 2A', 'Gene', (55, 61)) ('normetanephrines', 'Chemical', 'MESH:D009647', (122, 138)) ('C634Y', 'Var', (63, 68)) 94585 23868299 Multiple endocrine neoplasia type 2 (MEN2) is an autosomal dominant hereditary cancer syndrome caused by mutations in the RET proto-oncogene. ('RET', 'Gene', '5979', (122, 125)) ('Multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (0, 35)) ('MEN', 'Species', '9606', (37, 40)) ('cancer', 'Phenotype', 'HP:0002664', (79, 85)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (9, 28)) ('Multiple endocrine neoplasia type 2', 'Disease', (0, 35)) ('RET', 'Gene', (122, 125)) ('neoplasia', 'Phenotype', 'HP:0002664', (19, 28)) ('caused by', 'Reg', (95, 104)) ('autosomal dominant hereditary cancer syndrome', 'Disease', 'MESH:D009386', (49, 94)) ('autosomal dominant hereditary cancer syndrome', 'Disease', (49, 94)) ('mutations', 'Var', (105, 114)) 94586 23868299 The syndrome is characterized by nearly complete penetrance of medullary thyroid cancer, however is further divided into three subtypes based upon the specific RET mutation and associated endocrinopathies, age at presentation, and clinical course. ('endocrinopathies', 'Disease', (188, 204)) ('endocrinopathies', 'Disease', 'MESH:C567425', (188, 204)) ('thyroid cancer', 'Disease', (73, 87)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (73, 87)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (63, 87)) ('thyroid cancer', 'Disease', 'MESH:D013964', (73, 87)) ('mutation', 'Var', (164, 172)) ('RET', 'Gene', '5979', (160, 163)) ('cancer', 'Phenotype', 'HP:0002664', (81, 87)) ('RET', 'Gene', (160, 163)) 94592 23868299 However, given the dangers of catecholamine excess, especially in the peri-operative setting, appropriate screening for MEN 2 patients, based upon age and specific RET mutation, is warranted. ('catecholamine', 'Chemical', 'MESH:D002395', (30, 43)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (30, 50)) ('RET', 'Gene', (164, 167)) ('MEN', 'Species', '9606', (120, 123)) ('catecholamine', 'MPA', (30, 43)) ('mutation', 'Var', (168, 176)) ('patients', 'Species', '9606', (126, 134)) ('RET', 'Gene', '5979', (164, 167)) 94593 23868299 In this case we present a patient with known MEN 2A, codon 634 RET mutation, who was diagnosed with a pheochromocytoma at the age of 8. ('patient', 'Species', '9606', (26, 33)) ('codon 634', 'Var', (53, 62)) ('RET', 'Gene', '5979', (63, 66)) ('pheochromocytoma', 'Disease', (102, 118)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (102, 118)) ('MEN 2A', 'Gene', (45, 51)) ('RET', 'Gene', (63, 66)) ('MEN 2A', 'Gene', '5979', (45, 51)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (102, 118)) 94599 23868299 The patient herself was diagnosed with the 634Y RET proto-oncogene heterozygous mutation via genetic testing at the age of 2. ('RET', 'Gene', '5979', (48, 51)) ('patient', 'Species', '9606', (4, 11)) ('634Y', 'Var', (43, 47)) ('RET', 'Gene', (48, 51)) 94623 23868299 Based upon personal communication of this case, the 2009 American Thyroid Association guidelines recommend pheochromocytoma screening be initiated at the age of 8 for patients with MEN 2B or MEN 2A with codon 634 or 630 Ret mutations. ('MEN 2A', 'Gene', (191, 197)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (107, 123)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (107, 123)) ('patients', 'Species', '9606', (167, 175)) ('Ret', 'Gene', (220, 223)) ('MEN 2B', 'Gene', (181, 187)) ('Ret', 'Gene', '5979', (220, 223)) ('codon 634 or 630', 'Var', (203, 219)) ('MEN 2A', 'Gene', '5979', (191, 197)) ('MEN 2B', 'Gene', '5979', (181, 187)) ('pheochromocytoma', 'Disease', (107, 123)) 94630 23868299 We present the case of an 8-year-old female with known MEN 2A, C634Y Ret mutation, found to have markedly elevated plasma normetanephrines and total metanephrines, and diagnosed with a 6 cm pheochromocytoma requiring laparoscopic unilateral adrenalectomy. ('plasma normetanephrines', 'MPA', (115, 138)) ('pheochromocytoma', 'Disease', (190, 206)) ('total metanephrines', 'MPA', (143, 162)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (190, 206)) ('Ret', 'Gene', (69, 72)) ('Ret', 'Gene', '5979', (69, 72)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (190, 206)) ('C634Y', 'Mutation', 'rs75996173', (63, 68)) ('metanephrines', 'Chemical', 'MESH:D008676', (125, 138)) ('elevated', 'PosReg', (106, 114)) ('pheochromocytoma requiring laparoscopic unilateral adrenalectomy', 'Phenotype', 'HP:0006748', (190, 254)) ('metanephrines', 'Chemical', 'MESH:D008676', (149, 162)) ('MEN 2A', 'Gene', '5979', (55, 61)) ('MEN 2A', 'Gene', (55, 61)) ('normetanephrines', 'Chemical', 'MESH:D009647', (122, 138)) ('C634Y', 'Var', (63, 68)) 94631 23868299 Given this patient's age at diagnosis, current screening guidelines recommend annual screening beginning at age 8 for patients with MEN 2B or for patients with MEN 2A with codons 630 or 634 Ret mutations. ('MEN 2A', 'Gene', '5979', (160, 166)) ('MEN 2B', 'Gene', '5979', (132, 138)) ('codons 630 or 634', 'Var', (172, 189)) ('patients', 'Species', '9606', (146, 154)) ('patient', 'Species', '9606', (11, 18)) ('patient', 'Species', '9606', (146, 153)) ('patient', 'Species', '9606', (118, 125)) ('Ret', 'Gene', (190, 193)) ('patients', 'Species', '9606', (118, 126)) ('Ret', 'Gene', '5979', (190, 193)) ('MEN 2B', 'Gene', (132, 138)) ('MEN 2A', 'Gene', (160, 166)) 94703 22982788 The higher intra-operative blood loss and hypotension in the LgPheo group was the result of one patient requiring a wedge resection of his kidney with the pheochromocytoma (1200ml) and another patient with coagulopathy secondary to advanced liver cirrhosis (1000ml). ('hypotension', 'Disease', (42, 53)) ('liver cirrhosis', 'Disease', 'MESH:D008103', (241, 256)) ('intra-operative blood loss', 'Disease', 'MESH:D006473', (11, 37)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (155, 171)) ('coagulopathy', 'Disease', 'MESH:D001778', (206, 218)) ('advanced liver cirrhosis', 'Phenotype', 'HP:0100626', (232, 256)) ('coagulopathy', 'Disease', (206, 218)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (155, 171)) ('hypotension', 'Phenotype', 'HP:0002615', (42, 53)) ('patient', 'Species', '9606', (96, 103)) ('liver cirrhosis', 'Disease', (241, 256)) ('hypotension', 'Disease', 'MESH:D007022', (42, 53)) ('patient', 'Species', '9606', (193, 200)) ('pheochromocytoma', 'Disease', (155, 171)) ('liver cirrhosis', 'Phenotype', 'HP:0001394', (241, 256)) ('coagulopathy', 'Phenotype', 'HP:0003256', (206, 218)) ('intra-operative blood loss', 'Disease', (11, 37)) ('1200ml', 'Var', (173, 179)) 94745 22145147 Role of cortical sparing adrenalectomy and novel variant of mutation in patient with von Hippel-Lindau disease Neurofibromatosis type 1 is the most common phakomatoses and is inherited in autosomal dominant fashion with complete penetrance. ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (85, 110)) ('mutation', 'Var', (60, 68)) ('von Hippel-Lindau disease', 'Disease', (85, 110)) ('Neurofibromatosis type 1', 'Gene', (111, 135)) ('phakomatoses', 'Disease', 'MESH:D020752', (155, 167)) ('Neurofibromatosis type 1', 'Gene', '4763', (111, 135)) ('phakomatoses', 'Disease', (155, 167)) ('patient', 'Species', '9606', (72, 79)) ('variant', 'Var', (49, 56)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (111, 128)) 94754 22145147 Mutations in this gene have been identified in ~75% of VHL families, emphasizing the need for screening through surveillance programs, both for early detection and treatment of these tumors. ('tumors', 'Disease', 'MESH:D009369', (183, 189)) ('VHL', 'Disease', 'MESH:D006623', (55, 58)) ('tumor', 'Phenotype', 'HP:0002664', (183, 188)) ('VHL', 'Disease', (55, 58)) ('identified', 'Reg', (33, 43)) ('Mutations', 'Var', (0, 9)) ('tumors', 'Phenotype', 'HP:0002664', (183, 189)) ('tumors', 'Disease', (183, 189)) 94755 22145147 Further, the presence of mutations in the index case will help in screening siblings and early diagnosis of these tumors. ('mutations', 'Var', (25, 34)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('tumors', 'Phenotype', 'HP:0002664', (114, 120)) ('tumors', 'Disease', (114, 120)) ('tumors', 'Disease', 'MESH:D009369', (114, 120)) ('help', 'Reg', (58, 62)) 94777 22145147 A variation, c.IVS 2 + 3 A > G, was found in the intronic region following exon 2 of the VHL gene [Figure 5]. ('2 + 3 A > G', 'SUBSTITUTION', 'None', (19, 30)) ('2 + 3 A > G', 'Var', (19, 30)) ('VHL', 'Disease', 'MESH:D006623', (89, 92)) ('VHL', 'Disease', (89, 92)) 94799 22145147 The germline mutation puts all adrenal medullary tissue at risk for tumorigenesis; however, follow-up studies show that the risk of local recurrence is low (3.4-11%). ('tumor', 'Disease', (68, 73)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('germline mutation', 'Var', (4, 21)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) 94808 20016787 SDHD and SDHB mutations account for a significant percentage of head and neck paragangliomas. ('SDHB', 'Gene', '6390', (9, 13)) ('paragangliomas', 'Phenotype', 'HP:0002668', (78, 92)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (73, 92)) ('SDHB', 'Gene', (9, 13)) ('SDHD', 'Gene', '6392', (0, 4)) ('neck paragangliomas', 'Disease', (73, 92)) ('SDHD', 'Gene', (0, 4)) ('mutations', 'Var', (14, 23)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (73, 92)) ('paraganglioma', 'Phenotype', 'HP:0002668', (78, 91)) 94902 32432211 Incomplete resection and synchronous metastases were associated with higher risk of events (P = .011, P = .004), but presence of a germline mutation was not (P = .11). ('events', 'MPA', (84, 90)) ('synchronous metastases', 'Disease', 'MESH:D009362', (25, 47)) ('synchronous metastases', 'Disease', (25, 47)) ('Incomplete', 'Var', (0, 10)) 94903 32432211 Most pediatric PPGLs are associated with germline mutations and require specific follow-up because of the high risk of tumor recurrence. ('tumor', 'Disease', (119, 124)) ('PPGL', 'Chemical', '-', (15, 19)) ('associated', 'Reg', (25, 35)) ('PPGLs', 'Disease', (15, 20)) ('germline mutations', 'Var', (41, 59)) ('tumor', 'Disease', 'MESH:D009369', (119, 124)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) 94910 32432211 In pediatric patients, 50% to 70% of PPGLs are driven by a germline mutation in a PPGL-susceptibility gene. ('driven by', 'Reg', (47, 56)) ('patients', 'Species', '9606', (13, 21)) ('PPGL', 'Chemical', '-', (37, 41)) ('PPGL', 'Chemical', '-', (82, 86)) ('PPGLs', 'Disease', (37, 42)) ('germline mutation', 'Var', (59, 76)) ('PPGL-susceptibility', 'Gene', (82, 101)) 94913 32432211 Tumors in cluster 1 carry mutations in the VHL, SDHA, SDHB, SDHC, SDHD, SDHAF2, FH, MDH2, GOT2, SLC25A11 or HIF2A gene, and are characterized by induction of a pseudo-hypoxic tumorigenic pathway. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('SDHB', 'Gene', '6390', (54, 58)) ('induction', 'Reg', (145, 154)) ('mutations', 'Var', (26, 35)) ('HIF2A', 'Gene', '2034', (108, 113)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('MDH2', 'Gene', (84, 88)) ('SDHC', 'Gene', (60, 64)) ('GOT2', 'Gene', '2806', (90, 94)) ('SDHD', 'Gene', (66, 70)) ('HIF2A', 'Gene', (108, 113)) ('SDHAF2', 'Gene', (72, 78)) ('SDHAF2', 'Gene', '54949', (72, 78)) ('SDHB', 'Gene', (54, 58)) ('SDHA', 'Gene', (48, 52)) ('Tumors', 'Disease', (0, 6)) ('SDHA', 'Gene', (72, 76)) ('SDHA', 'Gene', '6389', (48, 52)) ('SDHA', 'Gene', '6389', (72, 76)) ('tumor', 'Disease', (175, 180)) ('GOT2', 'Gene', (90, 94)) ('VHL', 'Gene', (43, 46)) ('FH', 'Disease', 'MESH:D006938', (80, 82)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('tumor', 'Disease', 'MESH:D009369', (175, 180)) ('SLC25A11', 'Gene', (96, 104)) ('MDH2', 'Gene', '4191', (84, 88)) ('SDHC', 'Gene', '6391', (60, 64)) ('VHL', 'Gene', '7428', (43, 46)) ('SLC25A11', 'Gene', '8402', (96, 104)) ('tumor', 'Phenotype', 'HP:0002664', (175, 180)) ('SDHD', 'Gene', '6392', (66, 70)) 94914 32432211 Tumors in cluster 2 harbor mutations in the RET, NF1, TMEM127 or MAX gene, and are characterized by activation of the mitogen-activated protein kinase and mTOR signaling pathways. ('mutations', 'Var', (27, 36)) ('RET', 'Gene', (44, 47)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('mTOR', 'Gene', '2475', (155, 159)) ('mTOR', 'Gene', (155, 159)) ('MAX gene', 'Gene', (65, 73)) ('TMEM127', 'Gene', (54, 61)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('TMEM127', 'Gene', '55654', (54, 61)) ('RET', 'Gene', '5979', (44, 47)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('activation', 'PosReg', (100, 110)) ('NF1', 'Gene', (49, 52)) ('NF1', 'Gene', '4763', (49, 52)) 94916 32432211 It has been reported that the incidence of metastases is higher in PPGLs with an SDHB, SLC25A11, and FH mutation than in sporadic PPGLs, or PPGLs associated with other germline mutations. ('SLC25A11', 'Gene', (87, 95)) ('SLC25A11', 'Gene', '8402', (87, 95)) ('metastases', 'Disease', 'MESH:D009362', (43, 53)) ('higher', 'PosReg', (57, 63)) ('metastases', 'Disease', (43, 53)) ('PPGL', 'Chemical', '-', (67, 71)) ('SDHB', 'Gene', '6390', (81, 85)) ('PPGL', 'Chemical', '-', (130, 134)) ('FH', 'Disease', 'MESH:D006938', (101, 103)) ('mutation', 'Var', (104, 112)) ('PPGL', 'Chemical', '-', (140, 144)) ('SDHB', 'Gene', (81, 85)) 94966 32432211 In addition, among the 68 (83%) patients who underwent genetic testing for mutations in PPGL-susceptibility genes, 53 (77%) had a pathogenic mutation, including 25 (47% of mutation carriers) with an SDHB mutation. ('PPGL-susceptibility', 'Gene', (88, 107)) ('patients', 'Species', '9606', (32, 40)) ('PPGL', 'Chemical', '-', (88, 92)) ('pathogenic', 'Reg', (130, 140)) ('mutations', 'Var', (75, 84)) ('SDHB', 'Gene', '6390', (199, 203)) ('SDHB', 'Gene', (199, 203)) ('mutation', 'Var', (141, 149)) 94970 32432211 However, few cases of PHEO in patients with Beckwith-Wiedemann syndrome have been described, and a recent genetic analysis reported a D631Y RET mutation in a patient with recurrent anaplastic ependymoma associated with a familial history of PHEO. ('patient', 'Species', '9606', (30, 37)) ('patient', 'Species', '9606', (158, 165)) ('D631Y', 'Mutation', 'rs377767406', (134, 139)) ('Beckwith-Wiedemann syndrome', 'Disease', (44, 71)) ('RET', 'Gene', (140, 143)) ('patients', 'Species', '9606', (30, 38)) ('ependymoma', 'Phenotype', 'HP:0002888', (192, 202)) ('Beckwith-Wiedemann syndrome', 'Disease', 'MESH:D001506', (44, 71)) ('anaplastic ependymoma', 'Phenotype', 'HP:0030066', (181, 202)) ('D631Y', 'Var', (134, 139)) ('PHEO', 'Disease', (241, 245)) ('RET', 'Gene', '5979', (140, 143)) ('ependymoma', 'Disease', (192, 202)) ('ependymoma', 'Disease', 'MESH:D004806', (192, 202)) 94981 32432211 Indeed, mutations in SDHB, SDHC, SDHD, VHL, RET, and NF1 are frequently associated with PPGL, whereas mutations in SDHA, SDHAF2, TMEM127, HIF2A, FH, SLC25A11, and MAX have been described only in limited series of patients. ('RET', 'Gene', (44, 47)) ('SDHA', 'Gene', '6389', (115, 119)) ('SDHD', 'Gene', '6392', (33, 37)) ('SDHAF2', 'Gene', '54949', (121, 127)) ('HIF2A', 'Gene', '2034', (138, 143)) ('SDHAF2', 'Gene', (121, 127)) ('VHL', 'Gene', (39, 42)) ('associated', 'Reg', (72, 82)) ('SDHA', 'Gene', (121, 125)) ('SDHB', 'Gene', '6390', (21, 25)) ('TMEM127', 'Gene', '55654', (129, 136)) ('patients', 'Species', '9606', (213, 221)) ('HIF2A', 'Gene', (138, 143)) ('SDHA', 'Gene', '6389', (121, 125)) ('SDHC', 'Gene', (27, 31)) ('SLC25A11', 'Gene', (149, 157)) ('PPGL', 'Chemical', '-', (88, 92)) ('SDHD', 'Gene', (33, 37)) ('mutations', 'Var', (8, 17)) ('NF1', 'Gene', '4763', (53, 56)) ('VHL', 'Gene', '7428', (39, 42)) ('FH', 'Disease', 'MESH:D006938', (145, 147)) ('SDHB', 'Gene', (21, 25)) ('SLC25A11', 'Gene', '8402', (149, 157)) ('NF1', 'Gene', (53, 56)) ('RET', 'Gene', '5979', (44, 47)) ('SDHC', 'Gene', '6391', (27, 31)) ('TMEM127', 'Gene', (129, 136)) ('SDHA', 'Gene', (115, 119)) ('PPGL', 'Disease', (88, 92)) 94984 32432211 In our cohort, among the 68 patients who underwent genetic testing, 53 (77%) were carriers of a pathogenic mutation in a PPGL-susceptibility gene. ('PPGL', 'Chemical', '-', (121, 125)) ('PPGL-susceptibility', 'Gene', (121, 140)) ('patients', 'Species', '9606', (28, 36)) ('mutation', 'Var', (107, 115)) ('pathogenic', 'Reg', (96, 106)) 94986 32432211 Therefore, a new analysis by next-generation sequencing with a panel including all identified PPGL-susceptibility genes might also identify a pathogenic mutation in patients with negative genetic testing results at the time of the diagnosis. ('PPGL', 'Chemical', '-', (94, 98)) ('pathogenic', 'Reg', (142, 152)) ('PPGL-susceptibility', 'Gene', (94, 113)) ('patients', 'Species', '9606', (165, 173)) ('mutation', 'Var', (153, 161)) 94989 32432211 This may be due to a bias in patient recruitment and may be because SDHD mutations are mostly associated with cervical PGL treated in ears, nose, and throat departments and less likely to be declared in the RNTSE, nor referred to pediatric oncology departments. ('patient', 'Species', '9606', (29, 36)) ('cervical PGL', 'Disease', (110, 122)) ('SDHD', 'Gene', '6392', (68, 72)) ('oncology', 'Phenotype', 'HP:0002664', (240, 248)) ('SDHD', 'Gene', (68, 72)) ('associated', 'Reg', (94, 104)) ('mutations', 'Var', (73, 82)) 95079 30386061 The lesion also shows positivity for synaptophysin and chromogranin just like other neuroendocrine tumors. ('neuroendocrine tumors', 'Disease', (84, 105)) ('synaptophysin', 'Gene', (37, 50)) ('synaptophysin', 'Gene', '6855', (37, 50)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (84, 104)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (84, 105)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (84, 105)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('chromogranin', 'Protein', (55, 67)) ('positivity', 'Var', (22, 32)) ('tumors', 'Phenotype', 'HP:0002664', (99, 105)) 95099 28856203 There was no statistical difference between plasma normetanephrine (NMN) or metanephrine (MN) concentrations in samples collected following 30 and 40 min seated-rest in subjects with PPGL (n=11), post-resection of PPGL (n=20) or in whom PPGL was excluded (n=379). ('PPGL', 'Chemical', '-', (214, 218)) ('metanephrine', 'Chemical', 'MESH:D008676', (76, 88)) ('plasma normetanephrine', 'MPA', (44, 66)) ('PPGL', 'Var', (183, 187)) ('metanephrine', 'Chemical', 'MESH:D008676', (54, 66)) ('normetanephrine', 'Chemical', 'MESH:D009647', (51, 66)) ('PPGL', 'Chemical', '-', (183, 187)) ('NMN', 'Chemical', 'MESH:D009647', (68, 71)) ('PPGL', 'Chemical', '-', (237, 241)) 95102 28856203 PPGL occur sporadically or as a result of a germ line mutation in susceptible genes. ('PPGL', 'Chemical', '-', (0, 4)) ('mutation', 'Var', (54, 62)) ('PPGL', 'Disease', (0, 4)) ('result of', 'Reg', (32, 41)) 95129 28856203 To eliminate the potential bias of a large change in NMN or MN in subjects who were diagnosed with a PPGL, statistical analysis was conducted in subjects with PPGL, subjects post-resection of PPGL and subjects without a diagnosis of PPGL together and independently. ('PPGL', 'Chemical', '-', (101, 105)) ('PPGL', 'Chemical', '-', (159, 163)) ('PPGL', 'Var', (159, 163)) ('PPGL', 'Chemical', '-', (192, 196)) ('NMN', 'Chemical', 'MESH:D009647', (53, 56)) ('PPGL', 'Chemical', '-', (233, 237)) ('NMN', 'MPA', (53, 56)) 95147 28856203 There was no statistically significant difference in NMN or MN between paired blood samples collected at either 30 or 40 min post rest in either the total study group, subjects without PPGL, with PPGL or post-PPGL. ('PPGL', 'Chemical', '-', (185, 189)) ('PPGL', 'Var', (196, 200)) ('PPGL', 'Chemical', '-', (209, 213)) ('NMN', 'Chemical', 'MESH:D009647', (53, 56)) ('PPGL', 'Chemical', '-', (196, 200)) ('NMN', 'MPA', (53, 56)) ('post-PPGL', 'Var', (204, 213)) 95192 28785532 It is caused by germline mutations of the tumor suppressor gene VHL, located on the short arm of chromosome 3. ('short arm', 'Phenotype', 'HP:0009824', (84, 93)) ('tumor', 'Disease', (42, 47)) ('germline mutations', 'Var', (16, 34)) ('VHL', 'Gene', (64, 67)) ('VHL', 'Gene', '7428', (64, 67)) ('tumor', 'Disease', 'MESH:D009369', (42, 47)) ('caused by', 'Reg', (6, 15)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) 95199 28785532 Germline mutations of the VHL gene predispose affected individuals to the development of benign and malignant tumors in several systems including the central nervous system (CNS), and visceral organs such as the kidneys, pancreas, adrenals, and reproductive organs. ('Germline mutations', 'Var', (0, 18)) ('pancreas', 'Disease', 'MESH:D010190', (221, 229)) ('predispose', 'Reg', (35, 45)) ('VHL', 'Gene', (26, 29)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('VHL', 'Gene', '7428', (26, 29)) ('tumors', 'Phenotype', 'HP:0002664', (110, 116)) ('malignant tumors', 'Disease', (100, 116)) ('pancreas', 'Disease', (221, 229)) ('malignant tumors', 'Disease', 'MESH:D018198', (100, 116)) 95213 28785532 Inactivating gene deletions, frameshifts, and missense mutations of the gene have been implicated in VHL syndrome. ('implicated', 'Reg', (87, 97)) ('missense mutations', 'Var', (46, 64)) ('VHL syndrome', 'Disease', (101, 113)) ('Inactivating gene deletions', 'Var', (0, 27)) ('VHL syndrome', 'Disease', 'MESH:D006623', (101, 113)) ('frameshifts', 'Var', (29, 40)) 95215 28785532 Most patients with VHL syndrome inherit a germline mutation of the VHL gene from affected parents and a wild-type gene from the unaffected parent. ('inherit', 'Reg', (32, 39)) ('VHL', 'Gene', '7428', (67, 70)) ('patients', 'Species', '9606', (5, 13)) ('VHL', 'Gene', (19, 22)) ('VHL syndrome', 'Disease', (19, 31)) ('VHL', 'Gene', '7428', (19, 22)) ('VHL syndrome', 'Disease', 'MESH:D006623', (19, 31)) ('germline mutation', 'Var', (42, 59)) ('VHL', 'Gene', (67, 70)) 95216 28785532 In affected individuals, germline mutations of the gene are present in all cell types of the body (first hit); however, only those cell types with a somatic inactivation of the normal allele are prone to tumor formation (second hit). ('tumor', 'Disease', (204, 209)) ('germline', 'Var', (25, 33)) ('tumor', 'Disease', 'MESH:D009369', (204, 209)) ('tumor', 'Phenotype', 'HP:0002664', (204, 209)) 95225 28785532 In cases with no known history of VHL, the presence of multiple tumors is needed for diagnosis since approximately 20% of cases are the result of de novo mutations. ('tumors', 'Phenotype', 'HP:0002664', (64, 70)) ('result', 'Reg', (136, 142)) ('multiple tumors', 'Disease', (55, 70)) ('multiple tumors', 'Disease', 'MESH:D009369', (55, 70)) ('VHL', 'Gene', (34, 37)) ('mutations', 'Var', (154, 163)) ('VHL', 'Gene', '7428', (34, 37)) ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) 95240 28785532 High tumor burden is linked to partial germline mutation and male sex. ('partial germline mutation', 'Var', (31, 56)) ('High tumor', 'Disease', (0, 10)) ('High tumor', 'Disease', 'MESH:D009369', (0, 10)) ('tumor', 'Phenotype', 'HP:0002664', (5, 10)) 95257 28785532 Worse visual outcomes are associated with early age of onset of ocular disease, bilateral involvement, and missense mutations in VHL. ('ocular disease', 'Disease', 'MESH:D005128', (64, 78)) ('ocular disease', 'Phenotype', 'HP:0000478', (64, 78)) ('VHL', 'Gene', (129, 132)) ('VHL', 'Gene', '7428', (129, 132)) ('missense mutations', 'Var', (107, 125)) ('ocular disease', 'Disease', (64, 78)) 95332 28785532 Resection criteria involve tumor size greater than 3 cm, a pathogenic variant in exon 3, and tumor with a doubling growth rate in less than 500 days, all of which increases the risk of metastasis. ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('pathogenic', 'Reg', (59, 69)) ('exon 3', 'Gene', (81, 87)) ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('tumor', 'Disease', (27, 32)) ('tumor', 'Disease', (93, 98)) ('variant', 'Var', (70, 77)) ('tumor', 'Disease', 'MESH:D009369', (27, 32)) ('metastasis', 'CPA', (185, 195)) ('tumor', 'Disease', 'MESH:D009369', (93, 98)) 95504 28685511 APW=100x(EA-DA)/(EA-PA) RPW=100x(EA-DA)/EA (EA, attenuation coefficient 60 to 70 seconds after contrast administration; DA, attenuation coefficient 10 or 15 minutes after contrast administration; PA, attenuation coefficient before contrast administration) Generally, adrenal adenomas show typical rapid washout after contrast administration, whereas malignant lesions usually show fast contrast enhancement but slow contrast washout. ('men', 'Species', '9606', (402, 405)) ('adrenal adenoma', 'Phenotype', 'HP:0008256', (267, 282)) ('adrenal adenomas', 'Disease', 'MESH:D018246', (267, 283)) ('EA-PA', 'Chemical', '-', (17, 22)) ('APW=100x', 'Var', (0, 8)) ('adrenal adenomas', 'Disease', (267, 283)) ('EA-DA', 'Chemical', '-', (9, 14)) ('EA-DA', 'Chemical', '-', (33, 38)) ('washout', 'MPA', (303, 310)) ('adrenal adenomas', 'Phenotype', 'HP:0008256', (267, 283)) 95525 28685511 In a study that involved adenomas with little fat and >=10 HU on a CT scan before contrast administration, the sensitivity was 67% when all tumors >=10 HU were included in the study, and sensitivity and specificity were 89% and 100%, respectively, when only tumors with HU values of 10 to 30 were included. ('tumor', 'Phenotype', 'HP:0002664', (258, 263)) ('tumors', 'Disease', (140, 146)) ('tumors', 'Disease', 'MESH:D009369', (140, 146)) ('tumors', 'Disease', (258, 264)) ('tumors', 'Phenotype', 'HP:0002664', (140, 146)) ('tumors', 'Phenotype', 'HP:0002664', (258, 264)) ('tumors', 'Disease', 'MESH:D009369', (258, 264)) ('adenomas', 'Disease', 'MESH:D000236', (25, 33)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('>=10', 'Var', (54, 58)) ('adenomas', 'Disease', (25, 33)) 95527 28685511 Chemical shift MRI is better at diagnosing adrenal incidentaloma than conventional MRI, with findings such as reduced T1 signal and increased T2 signal suggestive of malignancy or pheochromocytoma. ('malignancy or pheochromocytoma', 'Disease', (166, 196)) ('reduced', 'NegReg', (110, 117)) ('adrenal incidentaloma', 'Disease', (43, 64)) ('T2 signal', 'MPA', (142, 151)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (180, 196)) ('malignancy or pheochromocytoma', 'Disease', 'MESH:D010673', (166, 196)) ('increased', 'PosReg', (132, 141)) ('adrenal incidentaloma', 'Disease', 'MESH:C538238', (43, 64)) ('T1 signal', 'MPA', (118, 127)) ('Chemical shift', 'Var', (0, 14)) 95604 28685511 Metyrosine inhibits the synthesis of catecholamines and can thus be used preoperatively with alpha-blockers to reduce blood loss and volume deficiency during surgery and to stabilize blood pressure. ('Metyrosine', 'Chemical', 'MESH:D019805', (0, 10)) ('synthesis of catecholamines', 'MPA', (24, 51)) ('blood loss', 'Disease', 'MESH:D006473', (118, 128)) ('volume deficiency', 'Disease', (133, 150)) ('catecholamines', 'Chemical', 'MESH:D002395', (37, 51)) ('inhibits', 'NegReg', (11, 19)) ('blood loss', 'Disease', (118, 128)) ('reduce', 'NegReg', (111, 117)) ('volume deficiency', 'Disease', 'MESH:D016055', (133, 150)) ('Metyrosine', 'Var', (0, 10)) 95696 28337414 A Computed Tomography (CT) scan of the abdomen and pelvis demonstrated the 5 cm lesion positioned along the medial aspect of the right kidney, between the right renal artery and renal vein, which was highly suggestive of a PPGL given anatomical location, morphology, being low attenuation on non-contrast study and showing marked contrast enhancement with rapid washout as compared to the renal parenchyma (Fig. ('right renal artery and renal vein', 'Disease', 'MESH:D007674', (155, 188)) ('enhancement', 'PosReg', (339, 350)) ('PPGL', 'Chemical', '-', (223, 227)) ('renal parenchyma', 'Disease', (389, 405)) ('PPGL', 'Var', (223, 227)) ('renal parenchyma', 'Disease', 'MESH:D007674', (389, 405)) 95787 19856710 However, if the size of lesions is around 4mm (twice the scanner resolution) in diameter, both [18F]-DA and [18F]-DOPA are able to detect liver and adrenal gland lesions after a 60 minute uptake interval. ('adrenal gland lesions', 'Disease', (148, 169)) ('detect', 'Reg', (131, 137)) ('[18F]-DA', 'Chemical', '-', (95, 103)) ('adrenal gland lesions', 'Disease', 'MESH:D000307', (148, 169)) ('[18F', 'Var', (95, 99)) ('[18F]-DOPA', 'Chemical', '-', (108, 118)) 95794 19072999 DIAGNOSIS AND MANAGEMENT OF HEREDITARY PARAGANGLIOMA SYNDROME DUE TO THE F933>X67 SDHD MUTATION The hereditary paraganglioma syndromes (PGLs) are autosomal dominant conditions with an increased risk for tumors of the sympathetic and parasympathetic neuroendocrine systems. ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('tumors', 'Disease', (203, 209)) ('tumors', 'Disease', 'MESH:D009369', (203, 209)) ('hereditary paraganglioma syndromes', 'Disease', 'MESH:D010235', (100, 134)) ('MANAGEMENT OF HEREDITARY PARAGANGLIOMA', 'Disease', 'MESH:D010235', (14, 52)) ('F933>X67', 'Var', (73, 81)) ('tumors', 'Phenotype', 'HP:0002664', (203, 209)) ('PARAGANGLIOMA', 'Phenotype', 'HP:0002668', (39, 52)) ('SDHD', 'Gene', (82, 86)) ('SDHD', 'Gene', '6392', (82, 86)) ('paraganglioma', 'Phenotype', 'HP:0002668', (111, 124)) ('hereditary paraganglioma syndromes', 'Disease', (100, 134)) ('parasympathetic neuroendocrine systems', 'Disease', (233, 271)) ('PGL', 'Disease', (136, 139)) ('parasympathetic neuroendocrine systems', 'Disease', 'MESH:D001342', (233, 271)) ('PGL', 'Disease', 'MESH:D010235', (136, 139)) ('MANAGEMENT OF HEREDITARY PARAGANGLIOMA', 'Disease', (14, 52)) 95797 19072999 Evaluation of the family history and the patient's history led to the identification of a familial succinate dehydrogenase subunit D (SDHD) gene mutation (F933>X67), consistent with a diagnosis of hereditary PGL1. ('succinate dehydrogenase subunit D', 'Gene', '6392', (99, 132)) ('PGL', 'Disease', (208, 211)) ('F933>X67', 'Var', (155, 163)) ('succinate dehydrogenase subunit D', 'Gene', (99, 132)) ('patient', 'Species', '9606', (41, 48)) ('PGL', 'Disease', 'MESH:D010235', (208, 211)) ('SDHD', 'Gene', (134, 138)) ('SDHD', 'Gene', '6392', (134, 138)) 95798 19072999 Although this family had all head and neck tumors, this SDHD mutation has previously been described in a family with primarily functional pheochromocytomas. ('SDHD', 'Gene', (56, 60)) ('SDHD', 'Gene', '6392', (56, 60)) ('head and neck tumors', 'Phenotype', 'HP:0012288', (29, 49)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (138, 154)) ('pheochromocytomas', 'Disease', (138, 155)) ('mutation', 'Var', (61, 69)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (138, 155)) ('neck tumors', 'Disease', 'MESH:D006258', (38, 49)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('tumors', 'Phenotype', 'HP:0002664', (43, 49)) ('neck tumors', 'Disease', (38, 49)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (138, 155)) 95799 19072999 This case report highlights the variable expressivity of a single mutation in SDHD, (F933>X67). ('F933>X67', 'Var', (85, 93)) ('SDHD', 'Gene', '6392', (78, 82)) ('SDHD', 'Gene', (78, 82)) 95807 19072999 Specifically, mutations of the succinate dehydrogenase subunit D (SDHD) gene, succinate dehydrogenase subunit B (SDHB) gene, and succinate dehydrogenase subunit C (SDHC) gene are responsible for PGL1, PGL4, and PGL3, respectively. ('PGL', 'Disease', 'MESH:D010235', (211, 214)) ('SDHD', 'Gene', (66, 70)) ('PGL', 'Disease', 'MESH:D010235', (195, 198)) ('succinate dehydrogenase subunit B', 'Gene', (78, 111)) ('succinate dehydrogenase subunit C', 'Gene', '6391', (129, 162)) ('SDHC', 'Gene', (164, 168)) ('succinate dehydrogenase subunit D', 'Gene', '6392', (31, 64)) ('PGL', 'Disease', 'MESH:D010235', (201, 204)) ('responsible', 'Reg', (179, 190)) ('mutations', 'Var', (14, 23)) ('SDHD', 'Gene', '6392', (66, 70)) ('SDHB', 'Gene', '6390', (113, 117)) ('PGL', 'Disease', (211, 214)) ('PGL', 'Disease', (195, 198)) ('PGL4', 'Gene', (201, 205)) ('PGL4', 'Gene', '6390', (201, 205)) ('succinate dehydrogenase subunit C', 'Gene', (129, 162)) ('PGL3', 'Gene', (211, 215)) ('PGL', 'Disease', (201, 204)) ('SDHB', 'Gene', (113, 117)) ('SDHC', 'Gene', '6391', (164, 168)) ('succinate dehydrogenase subunit D', 'Gene', (31, 64)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (78, 111)) ('PGL3', 'Gene', '6391', (211, 215)) 95810 19072999 A population-based study examining SDHD and SDHB in unrelated patients with abdominal or thoracic pheochromocytomas or head and neck paraganglioma without syndromic features revealed that head and neck paraganglioma are more prevalent among carriers of SDHD mutations (79%) compared with SDHB mutation carriers (31%). ('SDHD', 'Gene', '6392', (35, 39)) ('abdominal or thoracic pheochromocytomas', 'Disease', 'MESH:D010673', (76, 115)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (98, 115)) ('patients', 'Species', '9606', (62, 70)) ('paraganglioma', 'Phenotype', 'HP:0002668', (133, 146)) ('neck paraganglioma', 'Disease', (128, 146)) ('SDHD', 'Gene', (35, 39)) ('SDHB', 'Gene', '6390', (44, 48)) ('SDHD', 'Gene', '6392', (253, 257)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (119, 146)) ('neck paraganglioma', 'Disease', (197, 215)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (128, 146)) ('SDHB', 'Gene', '6390', (288, 292)) ('SDHD', 'Gene', (253, 257)) ('SDHB', 'Gene', (44, 48)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (188, 215)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (98, 114)) ('abdominal or thoracic pheochromocytomas', 'Disease', (76, 115)) ('mutations', 'Var', (258, 267)) ('SDHB', 'Gene', (288, 292)) ('prevalent', 'Reg', (225, 234)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (197, 215)) ('paraganglioma', 'Phenotype', 'HP:0002668', (202, 215)) 95811 19072999 In contrast, intra-abdominal extraadrenal tumors were more prevalent in SDHB mutation carriers (50%) than in SDHD mutation carriers (21%), and malignant tumors were only observed in SDHB mutation carriers (34%). ('intra-abdominal extraadrenal tumors', 'Disease', 'MESH:C565335', (13, 48)) ('SDHD', 'Gene', '6392', (109, 113)) ('mutation', 'Var', (77, 85)) ('SDHB', 'Gene', (72, 76)) ('malignant tumors', 'Disease', (143, 159)) ('tumors', 'Phenotype', 'HP:0002664', (42, 48)) ('SDHD', 'Gene', (109, 113)) ('SDHB', 'Gene', '6390', (72, 76)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('malignant tumors', 'Disease', 'MESH:D018198', (143, 159)) ('SDHB', 'Gene', '6390', (182, 186)) ('tumors', 'Phenotype', 'HP:0002664', (153, 159)) ('intra-abdominal extraadrenal tumors', 'Disease', (13, 48)) ('prevalent', 'Reg', (59, 68)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) ('SDHB', 'Gene', (182, 186)) 95812 19072999 SDHD mutation carriers were more likely to present with multiple tumors than were SHDB mutation carriers. ('tumors', 'Phenotype', 'HP:0002664', (65, 71)) ('SDHD', 'Gene', '6392', (0, 4)) ('multiple tumors', 'Disease', (56, 71)) ('multiple tumors', 'Disease', 'MESH:D009369', (56, 71)) ('SDHD', 'Gene', (0, 4)) ('mutation', 'Var', (5, 13)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) 95813 19072999 Based on a limited number of families reported in the literature, germline mutations of the SDHC gene appear to be predominantly associated with head and neck paraganglioma that are typically benign and seldom multifocal. ('SDHC', 'Gene', '6391', (92, 96)) ('associated', 'Reg', (129, 139)) ('neck paraganglioma', 'Disease', (154, 172)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (154, 172)) ('paraganglioma', 'Phenotype', 'HP:0002668', (159, 172)) ('germline mutations', 'Var', (66, 84)) ('SDHC', 'Gene', (92, 96)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (145, 172)) 95814 19072999 However, a recent report described a norepinephrine-secreting abdominal paraganglioma in a 15-year-old with a novel nonsense SDHC mutation, suggesting the possibility of a wider clinical spectrum than originally suspected for SHDC mutation carriers. ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (62, 85)) ('norepinephrine', 'Chemical', 'MESH:D009638', (37, 51)) ('abdominal paraganglioma', 'Disease', (62, 85)) ('mutation', 'Var', (130, 138)) ('SDHC', 'Gene', (125, 129)) ('nonsense', 'Var', (116, 124)) ('paraganglioma', 'Phenotype', 'HP:0002668', (72, 85)) ('SDHC', 'Gene', '6391', (125, 129)) 95816 19072999 However, the inheritance of the condition due to SDHD gene mutations is complicated by a parent of origin effect. ('SDHD', 'Gene', '6392', (49, 53)) ('SDHD', 'Gene', (49, 53)) ('mutations', 'Var', (59, 68)) 95817 19072999 Specifically, studies of multiple families reveal that, with rare exceptions, only individuals who inherit an SDHD mutation from a male are at risk to develop paraganglioma. ('paraganglioma', 'Disease', 'MESH:D010235', (159, 172)) ('develop', 'PosReg', (151, 158)) ('paraganglioma', 'Phenotype', 'HP:0002668', (159, 172)) ('SDHD', 'Gene', '6392', (110, 114)) ('paraganglioma', 'Disease', (159, 172)) ('mutation', 'Var', (115, 123)) ('SDHD', 'Gene', (110, 114)) 95821 19072999 It has been suggested that a paternally imprinted gene at 11p15 acts in synergy with SDHD mutations during tumorigenesis. ('mutations', 'Var', (90, 99)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumor', 'Disease', (107, 112)) ('SDHD', 'Gene', '6392', (85, 89)) ('SDHD', 'Gene', (85, 89)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) 95822 19072999 We report a case of hereditary PGL due to a mutation of the SDHD gene. ('mutation', 'Var', (44, 52)) ('PGL', 'Disease', 'MESH:D010235', (31, 34)) ('SDHD', 'Gene', '6392', (60, 64)) ('SDHD', 'Gene', (60, 64)) ('due to', 'Reg', (35, 41)) ('PGL', 'Disease', (31, 34)) 95851 19072999 Hereditary PGL1 results from germline mutations of the SDHD gene. ('germline mutations', 'Var', (29, 47)) ('SDHD', 'Gene', (55, 59)) ('PGL', 'Disease', (11, 14)) ('SDHD', 'Gene', '6392', (55, 59)) ('results from', 'Reg', (16, 28)) ('PGL', 'Disease', 'MESH:D010235', (11, 14)) 95855 19072999 The SDHD mutation identified in the index patient (F933>X67) is predicted to produce a truncated protein of 66 amino acids, which lacks the transmembrane, signal, and haem-binding domains. ('lacks', 'NegReg', (130, 135)) ('F933>X67', 'Var', (51, 59)) ('patient', 'Species', '9606', (42, 49)) ('SDHD', 'Gene', (4, 8)) ('SDHD', 'Gene', '6392', (4, 8)) ('transmembrane', 'MPA', (140, 153)) 95856 19072999 As expected, the patient's paternal half sister who had multiple head and neck paraganglioma was also found to carry this mutation. ('neck paraganglioma', 'Disease', (74, 92)) ('mutation', 'Var', (122, 130)) ('patient', 'Species', '9606', (17, 24)) ('paraganglioma', 'Phenotype', 'HP:0002668', (79, 92)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (74, 92)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (65, 92)) 95858 19072999 Although the phenotype in our family was consistent with what has been described in the literature for SDHD gene mutations in general, it is quite discordant from a case report of another family with the same F933>X67 mutation of the SDHD gene. ('F933>X67', 'Var', (209, 217)) ('mutations', 'Var', (113, 122)) ('SDHD', 'Gene', '6392', (234, 238)) ('SDHD', 'Gene', '6392', (103, 107)) ('SDHD', 'Gene', (234, 238)) ('SDHD', 'Gene', (103, 107)) 95859 19072999 The previously reported family with this mutation was characterized primarily by early-onset pheochromocytomas, rather than head and neck paraganglioma. ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (124, 151)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (93, 110)) ('paraganglioma', 'Phenotype', 'HP:0002668', (138, 151)) ('pheochromocytomas', 'Disease', (93, 110)) ('neck paraganglioma', 'Disease', (133, 151)) ('mutation', 'Var', (41, 49)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (133, 151)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (93, 110)) 95861 19072999 In fact, a recent study described an Italian founder mutation (Q109X) in 6 families with wide variability in the age of onset; clinical presentation; and number, site, and secreting properties of the tumors. ('tumor', 'Phenotype', 'HP:0002664', (200, 205)) ('Q109X', 'Var', (63, 68)) ('tumors', 'Phenotype', 'HP:0002664', (200, 206)) ('tumors', 'Disease', 'MESH:D009369', (200, 206)) ('tumors', 'Disease', (200, 206)) ('Q109X', 'Mutation', 'rs1060503770', (63, 68)) 95862 19072999 In addition, recent reports have shown that SDHD mutations can be associated with malignant paragangliomas, albeit less frequently than SDHB mutations. ('mutations', 'Var', (49, 58)) ('SDHD', 'Gene', (44, 48)) ('associated', 'Reg', (66, 76)) ('SDHB', 'Gene', '6390', (136, 140)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (82, 106)) ('SDHD', 'Gene', '6392', (44, 48)) ('SDHB', 'Gene', (136, 140)) ('malignant paragangliomas', 'Disease', (82, 106)) ('paraganglioma', 'Phenotype', 'HP:0002668', (92, 105)) ('paragangliomas', 'Phenotype', 'HP:0002668', (92, 106)) 95863 19072999 The variability in age of onset, site, hormonal activity, malignant potential, and number of primary tumors that can occur in SDHD mutation carriers poses challenges for screening and management. ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('primary tumors', 'Disease', (93, 107)) ('SDHD', 'Gene', '6392', (126, 130)) ('SDHD', 'Gene', (126, 130)) ('primary tumors', 'Disease', 'MESH:D009369', (93, 107)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('mutation', 'Var', (131, 139)) 95864 19072999 This case report highlights the variable expressivity of a single mutation in SDHD (F933>X67) in families with hereditary paraganglioma (PGL1). ('paraganglioma', 'Phenotype', 'HP:0002668', (122, 135)) ('SDHD', 'Gene', '6392', (78, 82)) ('SDHD', 'Gene', (78, 82)) ('PGL', 'Disease', (137, 140)) ('hereditary paraganglioma', 'Disease', (111, 135)) ('hereditary paraganglioma', 'Disease', 'MESH:D010235', (111, 135)) ('F933>X67', 'Var', (84, 92)) ('PGL', 'Disease', 'MESH:D010235', (137, 140)) 96015 20960160 Succinate dehydrogenase subunit B mutations/deletions were prevalent in the patients described. ('patients', 'Species', '9606', (76, 84)) ('mutations/deletions', 'Var', (34, 53)) ('prevalent', 'Reg', (59, 68)) 96041 20960160 Six of the eight patients studied are known to have mutations/deletions in the succinate dehydorgenase subunit B (SDHB) gene (three of those patients knew about their genetic mutation before presentation at the NIH); the other two patients were not found to have any currently known pheochromocytoma/paraganglioma causing genetic mutations. ('succinate dehydorgenase subunit B', 'Gene', '6390', (79, 112)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (283, 313)) ('SDHB', 'Gene', '6390', (114, 118)) ('patients', 'Species', '9606', (231, 239)) ('SDHB', 'Gene', (114, 118)) ('paraganglioma', 'Phenotype', 'HP:0002668', (300, 313)) ('succinate dehydorgenase subunit B', 'Gene', (79, 112)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (283, 299)) ('pheochromocytoma/paraganglioma', 'Disease', (283, 313)) ('patients', 'Species', '9606', (17, 25)) ('mutations/deletions', 'Var', (52, 71)) ('patients', 'Species', '9606', (141, 149)) 96048 20960160 Moreover, direct injection of norepinephrine and epinephrine into the third and the lateral ventricle (injection into the fourth ventricle was not preformed) has been shown to induce emesis through activation of alpha1- and alpha2-adrenergic receptors located in the chemoreceptor zone of the fourth ventricle. ('emesis', 'Disease', 'MESH:D014839', (183, 189)) ('lateral ventricle', 'Phenotype', 'HP:0006956', (84, 101)) ('emesis', 'Disease', (183, 189)) ('epinephrine', 'Chemical', 'MESH:D004837', (33, 44)) ('norepinephrine', 'Chemical', 'MESH:D009638', (30, 44)) ('norepinephrine', 'Var', (30, 44)) ('activation', 'PosReg', (198, 208)) ('epinephrine', 'Chemical', 'MESH:D004837', (49, 60)) ('emesis', 'Phenotype', 'HP:0002013', (183, 189)) 96056 20960160 A large cohort of the patients in this study, six of the eight, has mutations or deletions in the SDHB gene, three (50%) of these patients were aware of their genetic mutation prior to their presentation at the NIH (the other three were diagnosed through testing at the NIH). ('deletions', 'Var', (81, 90)) ('patients', 'Species', '9606', (22, 30)) ('SDHB', 'Gene', '6390', (98, 102)) ('SDHB', 'Gene', (98, 102)) ('patients', 'Species', '9606', (130, 138)) ('mutations', 'Var', (68, 77)) 96059 20960160 If nausea and vomiting were due to activation of alpha1- and alpha2-adrenergic receptors preferably by excess of norepinephrine, patients with SDHB gene mutations and deletions would likely exhibit such symptoms. ('deletions', 'Var', (167, 176)) ('nausea', 'Phenotype', 'HP:0002018', (3, 9)) ('nausea and vomiting', 'Phenotype', 'HP:0002017', (3, 22)) ('mutations', 'Var', (153, 162)) ('patients', 'Species', '9606', (129, 137)) ('norepinephrine', 'Chemical', 'MESH:D009638', (113, 127)) ('vomit', 'Phenotype', 'HP:0002013', (14, 19)) ('exhibit', 'Reg', (190, 197)) ('gene mutations', 'Var', (148, 162)) ('SDHB', 'Gene', '6390', (143, 147)) ('SDHB', 'Gene', (143, 147)) ('vomiting', 'Phenotype', 'HP:0002013', (14, 22)) ('alpha2-adrenergic receptors', 'Protein', (61, 88)) ('nausea and vomiting', 'Disease', 'MESH:D020250', (3, 22)) ('excess of norepinephrine', 'Phenotype', 'HP:0003345', (103, 127)) ('norepinephrine', 'MPA', (113, 127)) ('activation', 'PosReg', (35, 45)) 96113 23843833 Our research demonstrated that VHL is caused by a mutation in the von Hippel-Lindau (VHL) gene. ('VHL', 'Gene', '7428', (31, 34)) ('VHL', 'Gene', (85, 88)) ('von Hippel-Lindau', 'Gene', (66, 83)) ('caused by', 'Reg', (38, 47)) ('VHL', 'Gene', '7428', (85, 88)) ('von Hippel-Lindau', 'Gene', '7428', (66, 83)) ('VHL', 'Gene', (31, 34)) ('mutation', 'Var', (50, 58)) 96127 23843833 This type, which is caused by VHL gene inactivation at a specific point of the VHL protein, does not result in a tumor, it does, however, lead to polycythemia. ('polycythemia', 'Disease', 'MESH:D011086', (146, 158)) ('tumor', 'Disease', (113, 118)) ('VHL', 'Gene', '7428', (79, 82)) ('inactivation', 'Var', (39, 51)) ('VHL', 'Gene', (30, 33)) ('VHL', 'Gene', '7428', (30, 33)) ('tumor', 'Disease', 'MESH:D009369', (113, 118)) ('polycythemia', 'Disease', (146, 158)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('lead to', 'Reg', (138, 145)) ('VHL', 'Gene', (79, 82)) ('polycythemia', 'Phenotype', 'HP:0001901', (146, 158)) 96137 23843833 The development of VHL-associated disorders has been elaborated with the use of the classic theory of Knudson's two-hit hypothesis, which proposes that both VHL alleles are inactivated as a result of mutation and deletion of the VHL gene, which in turn, results in functional impediment of the tumor suppressor gene. ('tumor', 'Disease', (294, 299)) ('VHL', 'Gene', (229, 232)) ('VHL', 'Gene', (19, 22)) ('functional', 'MPA', (265, 275)) ('VHL', 'Gene', '7428', (229, 232)) ('VHL', 'Gene', (157, 160)) ('VHL', 'Gene', '7428', (19, 22)) ('tumor', 'Disease', 'MESH:D009369', (294, 299)) ('VHL', 'Gene', '7428', (157, 160)) ('deletion', 'Var', (213, 221)) ('results in', 'Reg', (254, 264)) ('tumor', 'Phenotype', 'HP:0002664', (294, 299)) ('mutation', 'Var', (200, 208)) 96139 23843833 Various tumors, such as HB in the CNS, RA, Pheo, RCC, neuroendocrine tumors in the pancreas, renal, and pancreatic cysts, have been found to develop through the same process as that in the inactivation of the VHL gene and subsequent functional loss of the pVHL-elong in B-C (VBC) complex. ('RA', 'Chemical', '-', (39, 41)) ('functional', 'MPA', (233, 243)) ('inactivation', 'Var', (189, 201)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('pancreatic cysts', 'Disease', (104, 120)) ('tumors', 'Disease', (8, 14)) ('pancreatic cysts', 'Phenotype', 'HP:0001737', (104, 120)) ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('VHL', 'Gene', (209, 212)) ('tumors', 'Phenotype', 'HP:0002664', (69, 75)) ('VHL', 'Gene', (257, 260)) ('tumors', 'Disease', 'MESH:D009369', (8, 14)) ('RCC', 'Disease', (49, 52)) ('Pheo', 'Disease', (43, 47)) ('neuroendocrine tumors in the pancreas', 'Disease', (54, 91)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (54, 75)) ('VHL', 'Gene', '7428', (209, 212)) ('tumors', 'Disease', (69, 75)) ('pancreatic cysts', 'Disease', 'MESH:D010181', (104, 120)) ('VHL', 'Gene', '7428', (257, 260)) ('RCC', 'Disease', 'MESH:C538614', (49, 52)) ('neuroendocrine tumors in the pancreas', 'Disease', 'MESH:D018358', (54, 91)) ('tumors', 'Disease', 'MESH:D009369', (69, 75)) ('tumors', 'Phenotype', 'HP:0002664', (8, 14)) ('pVHL', 'Gene', '7428', (256, 260)) ('loss', 'NegReg', (244, 248)) ('pVHL', 'Gene', (256, 260)) 96141 23843833 The VBC complex acts as the E3 ligase for ubiquitination and further proteasomal degradation of target proteins, therefore, any damage to functional VHL protein can lead to the accumulation of target proteins, eg, HIF1a, HIF2a as well as atypical protein kinase l. HIFs have been proven to act as transcription factors in hypoxic situations. ('VHL', 'Gene', '7428', (149, 152)) ('HIF1a', 'Gene', (214, 219)) ('accumulation', 'PosReg', (177, 189)) ('HIF2a', 'Gene', '2034', (221, 226)) ('lead to', 'Reg', (165, 172)) ('damage', 'Var', (128, 134)) ('HIF2a', 'Gene', (221, 226)) ('HIF1a', 'Gene', '3091', (214, 219)) ('VHL', 'Gene', (149, 152)) 96148 23843833 It has been demonstrated that VHL disease originates from mutations of the von Hippel-Lindau (VHL) gene. ('mutations', 'Var', (58, 67)) ('VHL', 'Gene', (94, 97)) ('VHL', 'Gene', '7428', (94, 97)) ('von Hippel-Lindau', 'Gene', '7428', (75, 92)) ('VHL disease', 'Disease', 'MESH:D006623', (30, 41)) ('VHL', 'Gene', (30, 33)) ('VHL', 'Gene', '7428', (30, 33)) ('originates from', 'Reg', (42, 57)) ('VHL disease', 'Disease', (30, 41)) ('von Hippel-Lindau', 'Gene', (75, 92)) 96151 23843833 At least 30% of the disease-causing mutations in the VHL gene need to be involved in order to cause clinical manifestations. ('cause', 'Reg', (94, 99)) ('VHL', 'Gene', '7428', (53, 56)) ('VHL', 'Gene', (53, 56)) ('mutations', 'Var', (36, 45)) 96154 23843833 The results of several studies have suggested that deletions could play a role in increasing the risk of RCC development in families with a positive VHL history. ('VHL', 'Gene', '7428', (149, 152)) ('RCC', 'Disease', 'MESH:C538614', (105, 108)) ('RCC', 'Disease', (105, 108)) ('deletions', 'Var', (51, 60)) ('VHL', 'Gene', (149, 152)) 96155 23843833 Since the life expectancy of patients with VHL mutations is less than 50 years, the prognosis may be improved by an early screening and diagnosis. ('VHL', 'Gene', (43, 46)) ('VHL', 'Gene', '7428', (43, 46)) ('patients', 'Species', '9606', (29, 37)) ('mutations', 'Var', (47, 56)) 96156 23843833 Therefore, patients and their offspring should be screened for VHL mutations by means of molecular genetic testing. ('patients', 'Species', '9606', (11, 19)) ('VHL', 'Gene', '7428', (63, 66)) ('VHL', 'Gene', (63, 66)) ('mutations', 'Var', (67, 76)) 96184 23843833 Specific point mutations in the VHL gene have been demonstrated, some of which are detected at exon 3 at high frequencies. ('VHL', 'Gene', '7428', (32, 35)) ('VHL', 'Gene', (32, 35)) ('point mutations', 'Var', (9, 24)) 96196 23843833 The best known and directly proven factor linked with the development of renal cell carcinoma (RCC) is the inhibition of hypoxia-inducible factor (HIF). ('renal cell carcinoma', 'Disease', (73, 93)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (73, 93)) ('carcinoma', 'Phenotype', 'HP:0030731', (84, 93)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (73, 93)) ('RCC', 'Disease', 'MESH:C538614', (95, 98)) ('RCC', 'Disease', (95, 98)) ('inhibition', 'Var', (107, 117)) ('hypoxia', 'Disease', (121, 128)) ('hypoxia', 'Disease', 'MESH:D000860', (121, 128)) 96197 23843833 HIF plays a critical role in pVHL-defective tumor formation, and it has also been suggested that HIF antagonists or its downstream targets (such as vascular endothelial growth factor), may have a potential role in the treatment of RCC in the future. ('RCC', 'Disease', (231, 234)) ('antagonists', 'Var', (101, 112)) ('pVHL', 'Gene', '7428', (29, 33)) ('RCC', 'Disease', 'MESH:C538614', (231, 234)) ('vascular endothelial growth factor', 'Gene', (148, 182)) ('tumor', 'Disease', 'MESH:D009369', (44, 49)) ('pVHL', 'Gene', (29, 33)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('vascular endothelial growth factor', 'Gene', '7422', (148, 182)) ('tumor', 'Disease', (44, 49)) 96206 23843833 Although thalidomide with interferon, or SU5416 alone was demonstrated to halt tumor growth in RCC, it did not reduce the size of it. ('SU5416', 'Var', (41, 47)) ('thalidomide', 'Chemical', 'MESH:D013792', (9, 20)) ('tumor', 'Disease', (79, 84)) ('RCC', 'Disease', 'MESH:C538614', (95, 98)) ('RCC', 'Disease', (95, 98)) ('tumor', 'Disease', 'MESH:D009369', (79, 84)) ('halt', 'NegReg', (74, 78)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) ('SU5416', 'Chemical', 'MESH:C116890', (41, 47)) 96214 22438210 Genetic Screening for von Hippel-Lindau Gene Mutations in Non-syndromic Pheochromocytoma: Low Prevalence and False-positives or Misdiagnosis Indicate a Need for Caution Genetic testing of tumor susceptibility genes is now recommended in most patients with pheochromocytoma or paraganglioma (PPGL), even in the absence of a syndromic presentation. ('pheochromocytoma or paraganglioma', 'Disease', (256, 289)) ('tumor', 'Disease', (188, 193)) ('pheochromocytoma or paraganglioma', 'Disease', 'MESH:D010673', (256, 289)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (22, 39)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (256, 272)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (72, 88)) ('tumor', 'Phenotype', 'HP:0002664', (188, 193)) ('von Hippel-Lindau', 'Disease', (22, 39)) ('Non-syndromic Pheochromocytoma', 'Disease', 'MESH:D010673', (58, 88)) ('tumor', 'Disease', 'MESH:D009369', (188, 193)) ('Non-syndromic Pheochromocytoma', 'Disease', (58, 88)) ('paraganglioma', 'Phenotype', 'HP:0002668', (276, 289)) ('Mutations', 'Var', (45, 54)) ('patients', 'Species', '9606', (242, 250)) 96215 22438210 This study prospectively examined the prevalence of von Hippel-Lindau (VHL) gene mutations among 182 patients with non-syndromic PPGLs. ('patients', 'Species', '9606', (101, 109)) ('PPGLs', 'Chemical', '-', (129, 134)) ('von Hippel-Lindau', 'Disease', (52, 69)) ('VHL', 'Gene', (71, 74)) ('VHL', 'Gene', '7428', (71, 74)) ('mutations', 'Var', (81, 90)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (52, 69)) 96217 22438210 VHL mutations were detected by certified laboratory testing in 3 of the 182 patients with non-syndromic PPGLs. ('patients', 'Species', '9606', (76, 84)) ('VHL', 'Gene', (0, 3)) ('mutations', 'Var', (4, 13)) ('VHL', 'Gene', '7428', (0, 3)) ('PPGLs', 'Chemical', '-', (104, 109)) 96224 22438210 A large proportion of pheochromocytomas and paragangliomas (PPGLs) have a hereditary basis due to germline mutations of numerous tumor susceptibility genes. ('paraganglioma', 'Phenotype', 'HP:0002668', (44, 57)) ('paragangliomas', 'Phenotype', 'HP:0002668', (44, 58)) ('PPGLs', 'Chemical', '-', (60, 65)) ('germline mutations', 'Var', (98, 116)) ('numerous tumor', 'Disease', 'MESH:D009369', (120, 134)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (22, 38)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (22, 39)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('numerous tumor', 'Disease', (120, 134)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (22, 58)) 96225 22438210 Mutations of the von Hippel-Lindau (VHL) gene, the neurofibromatosis gene, and the rearranged during transfection proto-oncogene (RET) represent well established hereditary causes of PPGLs. ('von Hippel-Lindau', 'Disease', (17, 34)) ('rearranged during transfection proto-oncogene', 'Gene', (83, 128)) ('neurofibromatosis', 'Disease', 'MESH:C537392', (51, 68)) ('VHL', 'Gene', (36, 39)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (51, 68)) ('VHL', 'Gene', '7428', (36, 39)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (17, 34)) ('RET', 'Gene', (130, 133)) ('Mutations', 'Var', (0, 9)) ('PPGLs', 'Disease', (183, 188)) ('causes', 'Reg', (173, 179)) ('RET', 'Gene', '5979', (130, 133)) ('neurofibromatosis', 'Disease', (51, 68)) ('rearranged during transfection proto-oncogene', 'Gene', '5979', (83, 128)) ('PPGLs', 'Chemical', '-', (183, 188)) 96226 22438210 Mutations of genes encoding the 4 subunits of succinate dehydrogenase (SDH), the SDH complex assembly factor 2, transmembrane protein 127, and MYC associated factor X represent more recently identified hereditary causes of PPGLs, bringing together a total of 10 genes in which germline mutations are now recognized as risk factors for the tumors. ('SDH', 'Gene', (71, 74)) ('factor 2', 'Gene', '8458', (102, 110)) ('PPGLs', 'Disease', (223, 228)) ('tumors', 'Phenotype', 'HP:0002664', (339, 345)) ('tumors', 'Disease', (339, 345)) ('tumors', 'Disease', 'MESH:D009369', (339, 345)) ('causes', 'Reg', (213, 219)) ('SDH', 'Gene', '6390', (71, 74)) ('MYC associated factor X', 'Gene', (143, 166)) ('factor 2', 'Gene', (102, 110)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', '6390', (81, 84)) ('MYC associated factor X', 'Gene', '4149', (143, 166)) ('PPGLs', 'Chemical', '-', (223, 228)) ('succinate dehydrogenase', 'Gene', '6390', (46, 69)) ('tumor', 'Phenotype', 'HP:0002664', (339, 344)) ('SDH', 'Gene', (81, 84)) ('succinate dehydrogenase', 'Gene', (46, 69)) 96227 22438210 Findings of germline mutations of tumor susceptibility genes among many patients with non-syndromic PPGLs have led to recommendations that all affected patients should be considered for genetic testing. ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('tumor', 'Disease', (34, 39)) ('germline mutations', 'Var', (12, 30)) ('PPGLs', 'Disease', (100, 105)) ('tumor', 'Disease', 'MESH:D009369', (34, 39)) ('PPGLs', 'Chemical', '-', (100, 105)) ('patients', 'Species', '9606', (152, 160)) ('patients', 'Species', '9606', (72, 80)) 96228 22438210 The present study focused on screening for VHL mutations. ('VHL', 'Gene', (43, 46)) ('VHL', 'Gene', '7428', (43, 46)) ('mutations', 'Var', (47, 56)) 96229 22438210 We assessed the prevalence of unsuspected germline VHL mutations among patients with non-syndromic PPGLs, examined the clinical presentation of patients identified with mutations compared to established VHL syndrome and carried out follow-up testing to confirm the contribution of mutations to disease in patients with an atypical presentation. ('VHL', 'Gene', '7428', (51, 54)) ('mutations', 'Var', (55, 64)) ('patients', 'Species', '9606', (71, 79)) ('VHL syndrome', 'Disease', 'MESH:D006623', (203, 215)) ('PPGLs', 'Chemical', '-', (99, 104)) ('patients', 'Species', '9606', (305, 313)) ('patients', 'Species', '9606', (144, 152)) ('VHL', 'Gene', (203, 206)) ('VHL syndrome', 'Disease', (203, 215)) ('VHL', 'Gene', (51, 54)) ('VHL', 'Gene', '7428', (203, 206)) 96231 22438210 Those with a non-syndromic presentation (i.e., no other tumors or stigmata indicating a specific syndrome) who underwent screening for VHL gene mutations included 103 females and 79 males and were aged between 7 and 83 years (median 43 years) at first diagnosis of tumors. ('VHL', 'Gene', (135, 138)) ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('tumor', 'Phenotype', 'HP:0002664', (265, 270)) ('VHL', 'Gene', '7428', (135, 138)) ('tumors', 'Disease', (265, 271)) ('tumors', 'Disease', (56, 62)) ('tumors', 'Disease', 'MESH:D009369', (56, 62)) ('tumors', 'Disease', 'MESH:D009369', (265, 271)) ('tumors', 'Phenotype', 'HP:0002664', (56, 62)) ('tumors', 'Phenotype', 'HP:0002664', (265, 271)) ('mutations', 'Var', (144, 153)) 96236 22438210 PPGL tumor samples from 13 patients with established VHL syndrome and 2 of the 3 patients identified with VHL mutations and a non-syndromic presentation were prepared for microarray analysis according to Affymetrix protocols (Affymetrix, Inc). ('mutations', 'Var', (110, 119)) ('tumor', 'Disease', 'MESH:D009369', (5, 10)) ('VHL', 'Gene', (53, 56)) ('VHL syndrome', 'Disease', (53, 65)) ('patients', 'Species', '9606', (81, 89)) ('tumor', 'Phenotype', 'HP:0002664', (5, 10)) ('patients', 'Species', '9606', (27, 35)) ('VHL', 'Gene', '7428', (53, 56)) ('VHL', 'Gene', (106, 109)) ('tumor', 'Disease', (5, 10)) ('VHL syndrome', 'Disease', 'MESH:D006623', (53, 65)) ('VHL', 'Gene', '7428', (106, 109)) 96237 22438210 Follow-up testing of identified germline variants of the VHL gene in patients with non-syndromic PPGLs and an atypical presentation of disease involved analysis of DNA from blood and tumor samples. ('variants', 'Var', (41, 49)) ('tumor', 'Disease', 'MESH:D009369', (183, 188)) ('tumor', 'Phenotype', 'HP:0002664', (183, 188)) ('PPGLs', 'Disease', (97, 102)) ('VHL', 'Gene', (57, 60)) ('VHL', 'Gene', '7428', (57, 60)) ('tumor', 'Disease', (183, 188)) ('patients', 'Species', '9606', (69, 77)) ('PPGLs', 'Chemical', '-', (97, 102)) 96241 22438210 Among the 182 patients with non-syndromic PPGLs tested for VHL germline mutations, 3 were identified by certified laboratory testing with mutations (Table 1). ('VHL', 'Gene', '7428', (59, 62)) ('mutations', 'Var', (72, 81)) ('PPGLs', 'Chemical', '-', (42, 47)) ('tested', 'Reg', (48, 54)) ('VHL', 'Gene', (59, 62)) ('patients', 'Species', '9606', (14, 22)) 96244 22438210 The third patient (case 3) had an exon 1 splice donor site mutation, IVS + 5 G > C. The certified diagnostic report stated: "this mutation results in abnormal splicing of the VHL pre-mRNA and has been reported previously in patients with VHL". ('donor', 'Species', '9606', (48, 53)) ('results in', 'Reg', (139, 149)) ('VHL', 'Gene', '7428', (238, 241)) ('patient', 'Species', '9606', (224, 231)) ('patient', 'Species', '9606', (10, 17)) ('VHL', 'Gene', (175, 178)) ('5 G > C', 'SUBSTITUTION', 'None', (75, 82)) ('splicing', 'MPA', (159, 167)) ('VHL', 'Gene', '7428', (175, 178)) ('patients', 'Species', '9606', (224, 232)) ('5 G > C', 'Var', (75, 82)) ('VHL', 'Gene', (238, 241)) 96245 22438210 Evidently, designation as pathogenic was based on findings of the same gene variant in 2 previous patients with VHL syndrome, one with renal cell carcinoma and the other with a cerebellar hemangioblastoma. ('carcinoma', 'Phenotype', 'HP:0030731', (146, 155)) ('renal cell carcinoma', 'Disease', (135, 155)) ('variant', 'Var', (76, 83)) ('cerebellar hemangioblastoma', 'Disease', 'MESH:D018325', (177, 204)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (135, 155)) ('cerebellar hemangioblastoma', 'Phenotype', 'HP:0006880', (177, 204)) ('patients', 'Species', '9606', (98, 106)) ('VHL syndrome', 'Disease', (112, 124)) ('cerebellar hemangioblastoma', 'Disease', (177, 204)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (135, 155)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (188, 204)) ('VHL syndrome', 'Disease', 'MESH:D006623', (112, 124)) 96246 22438210 The single patient with the VHL missense mutation (case 1) had his first tumor diagnosed at age 8. ('tumor', 'Disease', 'MESH:D009369', (73, 78)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('patient', 'Species', '9606', (11, 18)) ('tumor', 'Disease', (73, 78)) ('missense mutation', 'Var', (32, 49)) ('VHL', 'Gene', (28, 31)) ('VHL', 'Gene', '7428', (28, 31)) 96255 22438210 Two of the 3 patients (cases 2 and 3) with non-syndromic PPGLs who tested positive for VHL mutations showed increases in plasma and urinary metanephrine well outside the ranges for patients with PPGLs associated with established VHL syndrome (Fig. ('VHL', 'Gene', '7428', (87, 90)) ('metanephrine', 'Chemical', 'MESH:D008676', (140, 152)) ('PPGLs', 'Chemical', '-', (57, 62)) ('VHL', 'Gene', (229, 232)) ('VHL syndrome', 'Disease', (229, 241)) ('increases', 'PosReg', (108, 117)) ('patients', 'Species', '9606', (13, 21)) ('VHL', 'Gene', '7428', (229, 232)) ('PPGLs', 'Chemical', '-', (195, 200)) ('mutations', 'Var', (91, 100)) ('patients', 'Species', '9606', (181, 189)) ('VHL syndrome', 'Disease', 'MESH:D006623', (229, 241)) ('VHL', 'Gene', (87, 90)) 96257 22438210 Hierarchical cluster analysis of microarray data supervised according to presence or absence of VHL syndrome indicated distinct gene expression profiles between tumors of the 13 patients with established VHL syndrome and the 2 with an atypical catecholamine metabolomic profile, who tested positive for VHL mutations (Fig. ('VHL', 'Gene', '7428', (303, 306)) ('catecholamine', 'Chemical', 'MESH:D002395', (244, 257)) ('tumors', 'Disease', (161, 167)) ('VHL syndrome', 'Disease', (204, 216)) ('absence of VHL syndrome', 'Disease', 'MESH:D006623', (85, 108)) ('VHL', 'Gene', (204, 207)) ('patients', 'Species', '9606', (178, 186)) ('tumors', 'Disease', 'MESH:D009369', (161, 167)) ('VHL syndrome', 'Disease', 'MESH:D006623', (204, 216)) ('mutations', 'Var', (307, 316)) ('VHL', 'Gene', '7428', (204, 207)) ('absence of VHL syndrome', 'Disease', (85, 108)) ('tumor', 'Phenotype', 'HP:0002664', (161, 166)) ('VHL', 'Gene', (96, 99)) ('VHL', 'Gene', (303, 306)) ('VHL syndrome', 'Disease', 'MESH:D006623', (96, 108)) ('tumors', 'Phenotype', 'HP:0002664', (161, 167)) ('positive', 'Reg', (290, 298)) ('VHL', 'Gene', '7428', (96, 99)) 96258 22438210 Hierarchical cluster analysis of a selection of 83 genes, established to distinguish tumors from patients with VHL and RET proto-oncogene mutations, again revealed highly distinct gene expression profiles between tumors of the 13 patients with established VHL syndrome and the 2 with the atypical catecholamine metabolomic profile (Fig. ('VHL', 'Gene', (111, 114)) ('tumors', 'Phenotype', 'HP:0002664', (213, 219)) ('tumor', 'Phenotype', 'HP:0002664', (213, 218)) ('RET', 'Gene', '5979', (119, 122)) ('tumors', 'Phenotype', 'HP:0002664', (85, 91)) ('tumors', 'Disease', (213, 219)) ('VHL', 'Gene', '7428', (111, 114)) ('catecholamine', 'Chemical', 'MESH:D002395', (297, 310)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('tumors', 'Disease', (85, 91)) ('tumors', 'Disease', 'MESH:D009369', (213, 219)) ('RET', 'Gene', (119, 122)) ('VHL', 'Gene', (256, 259)) ('VHL syndrome', 'Disease', (256, 268)) ('tumors', 'Disease', 'MESH:D009369', (85, 91)) ('patients', 'Species', '9606', (97, 105)) ('mutations', 'Var', (138, 147)) ('patients', 'Species', '9606', (230, 238)) ('VHL', 'Gene', '7428', (256, 259)) ('VHL syndrome', 'Disease', 'MESH:D006623', (256, 268)) 96263 22438210 However, tumor DNA from this patient failed to reveal loss of heterozygosity (LOH), by virtue of the mutant and wild type sequences being present in equivalent amounts as the blood DNA control (Fig. ('patient', 'Species', '9606', (29, 36)) ('tumor', 'Disease', 'MESH:D009369', (9, 14)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('mutant', 'Var', (101, 107)) ('tumor', 'Disease', (9, 14)) 96269 22438210 Our findings that VHL mutations could not be confirmed as a cause of non-syndromic disease in 2 patients earlier diagnosed with VHL germline mutations illustrate a need for caution when interpreting genetic test results in the absence of other evidence for a mutation, particularly when clinical data are inconsistent with established genotype-phenotype relationships. ('non-syndromic disease', 'Disease', 'MESH:C580335', (69, 90)) ('VHL', 'Gene', '7428', (18, 21)) ('VHL', 'Gene', '7428', (128, 131)) ('non-syndromic disease', 'Disease', (69, 90)) ('mutations', 'Var', (22, 31)) ('patients', 'Species', '9606', (96, 104)) ('VHL', 'Gene', (18, 21)) ('VHL', 'Gene', (128, 131)) 96271 22438210 Malignant disease is relatively rare in VHL-associated PPGLs, yet this was evident in 2 of the 3 patients with non-syndromic PPGLs who tested positive for VHL mutations. ('VHL', 'Gene', '7428', (155, 158)) ('VHL', 'Gene', (40, 43)) ('mutations', 'Var', (159, 168)) ('VHL', 'Gene', '7428', (40, 43)) ('Malignant disease', 'Disease', 'MESH:D009369', (0, 17)) ('Malignant disease', 'Disease', (0, 17)) ('PPGLs', 'Chemical', '-', (55, 60)) ('PPGLs', 'Chemical', '-', (125, 130)) ('VHL', 'Gene', (155, 158)) ('patients', 'Species', '9606', (97, 105)) 96275 22438210 in which differences in gene expression define 2 distinct cluster groups of tumors, also shown to be more simply distinguished by absence or presence of epinephrine production. ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('tumors', 'Disease', (76, 82)) ('tumors', 'Disease', 'MESH:D009369', (76, 82)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) ('epinephrine', 'Chemical', 'MESH:D004837', (153, 164)) ('differences', 'Var', (9, 20)) 96276 22438210 The atypical presentation in 2 of the patients with apparent VHL mutations strongly suggested that VHL inactivation was not responsible for their tumors. ('tumors', 'Phenotype', 'HP:0002664', (146, 152)) ('VHL', 'Gene', '7428', (61, 64)) ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('VHL', 'Gene', (99, 102)) ('tumors', 'Disease', 'MESH:D009369', (146, 152)) ('VHL', 'Gene', '7428', (99, 102)) ('VHL', 'Gene', (61, 64)) ('patients', 'Species', '9606', (38, 46)) ('tumors', 'Disease', (146, 152)) ('mutations', 'Var', (65, 74)) 96277 22438210 This suspicion was strengthened by considerations that PPGLs in VHL patients rarely occur due to deletions or splice site mutations, but are more usually due to missense mutations. ('due', 'Reg', (154, 157)) ('VHL', 'Gene', (64, 67)) ('PPGLs', 'Disease', (55, 60)) ('missense mutations', 'Var', (161, 179)) ('patients', 'Species', '9606', (68, 76)) ('VHL', 'Gene', '7428', (64, 67)) ('deletions', 'Var', (97, 106)) ('PPGLs', 'Chemical', '-', (55, 60)) 96280 22438210 Although diagnosed as pathogenic on the basis of the same variant in 2 unrelated patients with VHL clinical manifestations, a recent study has described the variant as likely non-functional. ('variant', 'Var', (157, 164)) ('VHL', 'Gene', '7428', (95, 98)) ('patients', 'Species', '9606', (81, 89)) ('VHL', 'Gene', (95, 98)) 96282 22438210 Interestingly another group carrying out mutation screening in patients with non-syndromic PPGLs also reported findings of VHL mutations in 2 patients with an atypical presentation of disease. ('PPGLs', 'Chemical', '-', (91, 96)) ('VHL', 'Gene', (123, 126)) ('VHL', 'Gene', '7428', (123, 126)) ('patients', 'Species', '9606', (63, 71)) ('mutations', 'Var', (127, 136)) ('patients', 'Species', '9606', (142, 150)) 96283 22438210 Both patents had novel mutations and like ours no other family history or manifestations suggestive of VHL syndrome. ('VHL syndrome', 'Disease', (103, 115)) ('mutations', 'Var', (23, 32)) ('VHL syndrome', 'Disease', 'MESH:D006623', (103, 115)) 96287 22438210 Incorrect branding of a patient with a disease causing mutation, as in our 2 patients, may have undesirable consequences, including unnecessary anxiety for the patient and family members. ('anxiety', 'Disease', (144, 151)) ('anxiety', 'Phenotype', 'HP:0000739', (144, 151)) ('patient', 'Species', '9606', (24, 31)) ('patients', 'Species', '9606', (77, 85)) ('anxiety', 'Disease', 'MESH:D001008', (144, 151)) ('mutation', 'Var', (55, 63)) ('patient', 'Species', '9606', (160, 167)) ('patient', 'Species', '9606', (77, 84)) 96288 22438210 Follow-up confirmation seems particularly prudent in situations where a familial or syndromic presentation of disease is unclear, such as in the present context of screening for mutations in patients with apparent sporadic PPGLs. ('PPGLs', 'Disease', (223, 228)) ('mutations', 'Var', (178, 187)) ('patients', 'Species', '9606', (191, 199)) ('PPGLs', 'Chemical', '-', (223, 228)) 96289 22438210 The importance of a reserved approach to interpretation of genetic test results is further illustrated by recent experience with another patient identified with a known pathogenic mutation of the SDH subunit B gene following genetic screening after presentation with a solitary epinephrine-producing adrenal tumor, but no evidence of a hereditary syndrome (Pacak, unpublished observations). ('SDH', 'Gene', '6390', (196, 199)) ('patient', 'Species', '9606', (137, 144)) ('hereditary syndrome', 'Disease', 'MESH:D009386', (336, 355)) ('SDH', 'Gene', (196, 199)) ('adrenal tumor', 'Disease', 'MESH:D000310', (300, 313)) ('adrenal tumor', 'Disease', (300, 313)) ('tumor', 'Phenotype', 'HP:0002664', (308, 313)) ('epinephrine', 'Chemical', 'MESH:D004837', (278, 289)) ('hereditary syndrome', 'Disease', (336, 355)) ('mutation', 'Var', (180, 188)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (300, 313)) 96290 22438210 The other finding outlined here of a relatively low rate of germ-line VHL mutations among patients with non-syndromic PPGLs, although not in agreement with every study, raises some question about the appropriateness and cost-effectiveness of routine testing of this gene among all patients with PPGLs. ('VHL', 'Gene', (70, 73)) ('PPGLs', 'Chemical', '-', (118, 123)) ('VHL', 'Gene', '7428', (70, 73)) ('mutations', 'Var', (74, 83)) ('patients', 'Species', '9606', (281, 289)) ('PPGLs', 'Chemical', '-', (295, 300)) ('patients', 'Species', '9606', (90, 98)) 96367 22741527 found CD56 positivity in 18% (23/128) of clear cell RCCs. ('clear cell RCCs', 'Disease', (41, 56)) ('positivity', 'Var', (11, 21)) ('CD56', 'Gene', (6, 10)) ('CD56', 'Gene', '17967', (6, 10)) 96422 22472343 VHL disease is an autosomal dominant syndrome due to deletions or mutations in the VHL gene located on short arm of chromosome 3(3p25-p26). ('mutations', 'Var', (66, 75)) ('VHL disease', 'Disease', (0, 11)) ('deletions', 'Var', (53, 62)) ('due', 'Reg', (46, 49)) ('autosomal dominant syndrome', 'Disease', 'MESH:D030342', (18, 45)) ('autosomal dominant syndrome', 'Disease', (18, 45)) ('VHL', 'Disease', 'MESH:D006623', (0, 3)) ('VHL', 'Disease', (0, 3)) ('VHL disease', 'Disease', 'MESH:D006623', (0, 11)) ('VHL', 'Disease', (83, 86)) ('VHL', 'Disease', 'MESH:D006623', (83, 86)) ('short arm', 'Phenotype', 'HP:0009824', (103, 112)) 96423 22472343 The normal VHL gene is a tumor suppressor gene and it seems likely that the diminution of tumor suppression activity which results from the mutation of that gene leads to the various manifestations of the disease: renal cysts and renal carcinoma, pheochromocytoma, pancreatic cysts, neuroendocrine tumors, cystadenomas of the reproductive adnexal organs, and hemangioblastomas of the cerebellum, spinal cord, brain stem, and retina. ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('renal cysts', 'Phenotype', 'HP:0000107', (214, 225)) ('VHL', 'Disease', (11, 14)) ('mutation', 'Var', (140, 148)) ('hemangioblastomas of the cerebellum', 'Disease', (359, 394)) ('man', 'Species', '9606', (183, 186)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (283, 304)) ('tumor', 'Disease', (298, 303)) ('diminution', 'NegReg', (76, 86)) ('tumor', 'Disease', (90, 95)) ('hemangioblastomas of the cerebellum', 'Disease', 'MESH:D018325', (359, 394)) ('tumor', 'Disease', 'MESH:D009369', (298, 303)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (247, 263)) ('pancreatic cysts', 'Disease', 'MESH:D010181', (265, 281)) ('tumor', 'Disease', 'MESH:D009369', (90, 95)) ('tumors', 'Phenotype', 'HP:0002664', (298, 304)) ('neuroendocrine tumors', 'Disease', (283, 304)) ('cystadenomas', 'Disease', (306, 318)) ('tumor', 'Disease', (25, 30)) ('VHL', 'Disease', 'MESH:D006623', (11, 14)) ('pheochromocytoma', 'Disease', (247, 263)) ('carcinoma', 'Phenotype', 'HP:0030731', (236, 245)) ('cystadenomas', 'Disease', 'MESH:D003537', (306, 318)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (247, 263)) ('renal cysts and renal carcinoma', 'Disease', 'MESH:D007674', (214, 245)) ('tumor', 'Disease', 'MESH:D009369', (25, 30)) ('hemangioblastomas of the cerebellum', 'Phenotype', 'HP:0006880', (359, 394)) ('tumor', 'Phenotype', 'HP:0002664', (298, 303)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('pancreatic cysts', 'Phenotype', 'HP:0001737', (265, 281)) ('pancreatic cysts', 'Disease', (265, 281)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (283, 304)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (230, 245)) ('man', 'Species', '9606', (361, 364)) 96424 22472343 VHL gene mutations have been shown both in ELSTs associated with VHL disease and in sporadic cases. ('ELSTs', 'Disease', (43, 48)) ('VHL disease', 'Disease', (65, 76)) ('VHL', 'Disease', 'MESH:D006623', (0, 3)) ('mutations', 'Var', (9, 18)) ('associated', 'Reg', (49, 59)) ('VHL', 'Disease', (0, 3)) ('VHL', 'Disease', (65, 68)) ('VHL', 'Disease', 'MESH:D006623', (65, 68)) ('VHL disease', 'Disease', 'MESH:D006623', (65, 76)) 96425 22472343 Gene analysis performed to a patient with ELST who presented with a medical and family history of VHL disease showed mutation in VHL gene, resulting in C to T exchange at position 194, the consequence of which is an amino acid exchange S65L. ('VHL', 'Disease', 'MESH:D006623', (129, 132)) ('patient', 'Species', '9606', (29, 36)) ('VHL', 'Disease', (129, 132)) ('S65L', 'Mutation', 'rs5030826', (236, 240)) ('C to T exchange at position 194', 'Mutation', 'rs5030826', (152, 183)) ('VHL', 'Disease', 'MESH:D006623', (98, 101)) ('VHL', 'Disease', (98, 101)) ('VHL disease', 'Disease', 'MESH:D006623', (98, 109)) ('amino acid exchange S65L', 'Var', (216, 240)) ('C to T exchange', 'Var', (152, 167)) ('mutation', 'Var', (117, 125)) ('VHL disease', 'Disease', (98, 109)) ('S65L', 'Var', (236, 240)) 96426 22472343 Sporadic cases of endolymphatic sac tumor without VHL disease also showed VHL gene mutation similar to that in the germ line of patients with the disease according to Hamazaki's study. ('VHL', 'Disease', (50, 53)) ('VHL disease', 'Disease', 'MESH:D006623', (50, 61)) ('endolymphatic sac tumor', 'Disease', 'MESH:D036821', (18, 41)) ('endolymphatic sac tumor', 'Phenotype', 'HP:0030393', (18, 41)) ('endolymphatic sac tumor', 'Disease', (18, 41)) ('mutation', 'Var', (83, 91)) ('VHL disease', 'Disease', (50, 61)) ('tumor', 'Phenotype', 'HP:0002664', (36, 41)) ('patients', 'Species', '9606', (128, 136)) ('VHL', 'Disease', 'MESH:D006623', (50, 53)) ('VHL', 'Disease', (74, 77)) ('VHL', 'Disease', 'MESH:D006623', (74, 77)) 96465 20540712 Low penetrance of a SDHB mutation in a large Dutch paraganglioma family Germline mutations of the succinate dehydrogenase subunit B gene (SDHB) predispose carriers for paragangliomas, and current estimates of the chance of mutation carriers actually developing tumors (penetrance) are high. ('paragangliomas', 'Disease', 'MESH:D010235', (168, 182)) ('paraganglioma', 'Phenotype', 'HP:0002668', (168, 181)) ('paragangliomas', 'Phenotype', 'HP:0002668', (168, 182)) ('tumors', 'Phenotype', 'HP:0002664', (261, 267)) ('mutations', 'Var', (81, 90)) ('tumor', 'Phenotype', 'HP:0002664', (261, 266)) ('succinate dehydrogenase', 'Gene', (98, 121)) ('mutation', 'Var', (25, 33)) ('tumors', 'Disease', (261, 267)) ('SDHB', 'Gene', '6390', (20, 24)) ('paraganglioma', 'Disease', (51, 64)) ('predispose', 'Reg', (144, 154)) ('SDHB', 'Gene', '6390', (138, 142)) ('paragangliomas', 'Disease', (168, 182)) ('paraganglioma', 'Disease', 'MESH:D010235', (51, 64)) ('tumors', 'Disease', 'MESH:D009369', (261, 267)) ('paraganglioma', 'Disease', (168, 181)) ('SDHB', 'Gene', (20, 24)) ('SDHB', 'Gene', (138, 142)) ('paraganglioma', 'Disease', 'MESH:D010235', (168, 181)) ('succinate dehydrogenase', 'Gene', '6390', (98, 121)) ('paraganglioma', 'Phenotype', 'HP:0002668', (51, 64)) 96466 20540712 We evaluate the phenotype and penetrance of a germline SDHB mutation in a large and clinically well-characterized paraganglioma family. ('SDHB', 'Gene', (55, 59)) ('mutation', 'Var', (60, 68)) ('paraganglioma', 'Disease', 'MESH:D010235', (114, 127)) ('paraganglioma', 'Phenotype', 'HP:0002668', (114, 127)) ('SDHB', 'Gene', '6390', (55, 59)) ('paraganglioma', 'Disease', (114, 127)) 96467 20540712 Following identification of the mutation in a 31 year old index-patient, extensive clinical screening was performed in mutation carriers to evaluate the presence of head and neck, thoracic and abdominal paragangliomas. ('abdominal paragangliomas', 'Disease', 'MESH:D010235', (193, 217)) ('abdominal paragangliomas', 'Disease', (193, 217)) ('patient', 'Species', '9606', (64, 71)) ('paraganglioma', 'Phenotype', 'HP:0002668', (203, 216)) ('paragangliomas', 'Phenotype', 'HP:0002668', (203, 217)) ('thoracic', 'Disease', (180, 188)) ('mutation', 'Var', (32, 40)) 96468 20540712 DNA analysis detected 14 further SDHB mutation carriers. ('SDHB', 'Gene', '6390', (33, 37)) ('mutation', 'Var', (38, 46)) ('SDHB', 'Gene', (33, 37)) 96471 20540712 Only three of the fifteen mutation carriers in this family have developed paraganglioma, which results in a calculated penetrance of 26% at 48 years of age. ('paraganglioma', 'Phenotype', 'HP:0002668', (74, 87)) ('paraganglioma', 'Disease', (74, 87)) ('paraganglioma', 'Disease', 'MESH:D010235', (74, 87)) ('mutation', 'Var', (26, 34)) 96474 20540712 Mutations of SDHD are the most prominent cause of head-and-neck paragangliomas, whereas mutations in SDHB frequently result in adrenal and extra-adrenal paragangliomas, and related malignant disease. ('mutations', 'Var', (88, 97)) ('cause', 'Reg', (41, 46)) ('SDHB', 'Gene', '6390', (101, 105)) ('paragangliomas', 'Disease', 'MESH:D010235', (64, 78)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (59, 77)) ('paragangliomas', 'Phenotype', 'HP:0002668', (64, 78)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (139, 167)) ('paragangliomas', 'Disease', (153, 167)) ('SDHD', 'Gene', '6392', (13, 17)) ('Mutations', 'Var', (0, 9)) ('extra-adrenal paragangliomas', 'Disease', (139, 167)) ('SDHB', 'Gene', (101, 105)) ('SDHD', 'Gene', (13, 17)) ('head-and-neck paragangliomas', 'Phenotype', 'HP:0002864', (50, 78)) ('paragangliomas', 'Disease', (64, 78)) ('malignant disease', 'Disease', 'MESH:D009369', (181, 198)) ('paragangliomas', 'Disease', 'MESH:D010235', (153, 167)) ('malignant disease', 'Disease', (181, 198)) ('paraganglioma', 'Phenotype', 'HP:0002668', (153, 166)) ('paragangliomas', 'Phenotype', 'HP:0002668', (153, 167)) ('neck paraganglioma', 'Disease', (59, 77)) ('result in', 'Reg', (117, 126)) ('paraganglioma', 'Phenotype', 'HP:0002668', (64, 77)) 96475 20540712 Germline SDHB mutations show an autosomal dominant inheritance pattern, but the full clinical implications of SDHB mutations have remained obscure since most studies to date have described predominantly affected index cases. ('SDHB', 'Gene', (110, 114)) ('SDHB', 'Gene', '6390', (9, 13)) ('SDHB', 'Gene', (9, 13)) ('SDHB', 'Gene', '6390', (110, 114)) ('mutations', 'Var', (14, 23)) 96476 20540712 SDHB germline mutation carriers often present as apparently sporadic patients, i.e. ('patients', 'Species', '9606', (69, 77)) ('germline mutation', 'Var', (5, 22)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) 96479 20540712 While it is recognized that the penetrance of SDHB mutations is incomplete and age dependent, particularly in comparison with SDHD, the current estimates are likely to be inflated because many mutation carriers remain asymptomatic. ('SDHB', 'Gene', '6390', (46, 50)) ('mutations', 'Var', (51, 60)) ('SDHB', 'Gene', (46, 50)) ('man', 'Species', '9606', (188, 191)) ('SDHD', 'Gene', (126, 130)) ('SDHD', 'Gene', '6392', (126, 130)) 96480 20540712 The aim of the current study was to assess the phenotype and penetrance of a germline SDHB splice-site mutation (c.423+1G > A, intron 4) in a large Dutch paraganglioma family. ('SDHB', 'Gene', (86, 90)) ('paraganglioma', 'Phenotype', 'HP:0002668', (154, 167)) ('paraganglioma', 'Disease', (154, 167)) ('c.423+1G > A', 'Var', (113, 125)) ('paraganglioma', 'Disease', 'MESH:D010235', (154, 167)) ('c.423+1G > A', 'Mutation', 'rs398122805', (113, 125)) ('SDHB', 'Gene', '6390', (86, 90)) 96482 20540712 Mutation carriers were referred to the outpatient clinic of the departments of Endocrinology and Otorhinolaryngology of the Leiden University Medical Center, which is a tertiary referral center for paragangliomas. ('outpatient', 'Species', '9606', (39, 49)) ('Mutation', 'Var', (0, 8)) ('paragangliomas', 'Disease', (198, 212)) ('paragangliomas', 'Disease', 'MESH:D010235', (198, 212)) ('paraganglioma', 'Phenotype', 'HP:0002668', (198, 211)) ('paragangliomas', 'Phenotype', 'HP:0002668', (198, 212)) 96484 20540712 Briefly, SDHB mutation carriers were seen at least yearly, and catecholamine screening was carried out in duplicate 24 hours urine under strict dietary medication regulations. ('SDHB', 'Gene', '6390', (9, 13)) ('mutation', 'Var', (14, 22)) ('SDHB', 'Gene', (9, 13)) ('catecholamine', 'Chemical', 'MESH:D002395', (63, 76)) 96492 20540712 Haplotyping was performed following standard procedures (details available upon request) with the following markers: D1S436, D1S2697, D1S170, D1S3669, D1S2826 and D1S2644. ('D1S2826', 'Var', (151, 158)) ('D1S170', 'Var', (134, 140)) ('S2644', 'CellLine', 'CVCL:9K50', (165, 170)) ('D1S2644', 'Var', (163, 170)) ('D1S3669', 'Var', (142, 149)) ('D1S436', 'Var', (117, 123)) ('D1S2697', 'Var', (125, 132)) 96493 20540712 The distance between the last and the first marker (D1S436 and D1S2644) is ~ 3.35 Mb. ('D1S2644', 'Var', (63, 70)) ('D1S436', 'Var', (52, 58)) ('S2644', 'CellLine', 'CVCL:9K50', (65, 70)) 96500 20540712 The patient's family history was negative for paraganglioma, but DNA analysis revealed a mutation in the SDHB gene, c.423+1 G > A, a splice-site mutation previously identified and shown by us to lead to mis-splicing. ('mis-splicing', 'MPA', (203, 215)) ('SDHB', 'Gene', '6390', (105, 109)) ('c.423+1 G > A', 'Mutation', 'rs398122805', (116, 129)) ('paraganglioma', 'Disease', 'MESH:D010235', (46, 59)) ('c.423+1 G > A', 'Var', (116, 129)) ('patient', 'Species', '9606', (4, 11)) ('SDHB', 'Gene', (105, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (46, 59)) ('paraganglioma', 'Disease', (46, 59)) 96517 20540712 Kaplan-Meier analysis of the mutation cases showed a penetrance of 26% at 48 years for the germline SDHB c.423+1G > A mutation, indicating a remarkable reduced penetrance (Figure 2). ('c.423+1G > A', 'Var', (105, 117)) ('SDHB', 'Gene', '6390', (100, 104)) ('SDHB', 'Gene', (100, 104)) ('c.423+1G > A', 'Mutation', 'rs398122805', (105, 117)) 96518 20540712 In addition to the family described above, four Dutch paraganglioma patients were found to be carriers of the c.423+1G > A mutation. ('c.423+1G > A', 'Var', (110, 122)) ('paraganglioma', 'Disease', (54, 67)) ('paraganglioma', 'Disease', 'MESH:D010235', (54, 67)) ('c.423+1G > A', 'Mutation', 'rs398122805', (110, 122)) ('patients', 'Species', '9606', (68, 76)) ('paraganglioma', 'Phenotype', 'HP:0002668', (54, 67)) 96520 20540712 Founder mutations are well known in the Dutch population and the SDHD D92Y mutation is a striking example. ('D92Y', 'Var', (70, 74)) ('SDHD', 'Gene', (65, 69)) ('SDHD', 'Gene', '6392', (65, 69)) ('D92Y', 'Mutation', 'rs80338845', (70, 74)) 96524 20540712 The identification of a relatively large number of presymptomatic mutation carriers provides evidence for a lower penetrance of an SDHB mutation than suggested in previous studies. ('SDHB', 'Gene', '6390', (131, 135)) ('mutation', 'Var', (136, 144)) ('SDHB', 'Gene', (131, 135)) ('lower', 'NegReg', (108, 113)) ('mutation', 'Var', (66, 74)) 96525 20540712 In addition, haplotype analysis in four apparently sporadic patients demonstrated that these cases are related to the described family, again reinforcing the previously only suggestive evidence that behind every paraganglioma patient with an SDHB mutation, many asymptomatic mutation carriers remain under the clinical radar. ('patient', 'Species', '9606', (60, 67)) ('SDHB', 'Gene', '6390', (242, 246)) ('paraganglioma', 'Phenotype', 'HP:0002668', (212, 225)) ('mutation', 'Var', (247, 255)) ('patients', 'Species', '9606', (60, 68)) ('patient', 'Species', '9606', (226, 233)) ('paraganglioma', 'Disease', (212, 225)) ('man', 'Species', '9606', (257, 260)) ('SDHB', 'Gene', (242, 246)) ('paraganglioma', 'Disease', 'MESH:D010235', (212, 225)) 96526 20540712 Our observation that only three of fifteen SDHB mutation carriers developed paragangliomas indicates a penetrance of only 26% at 48 years, is lower than previous studies (50% - 77% at 50 years). ('SDHB', 'Gene', '6390', (43, 47)) ('paragangliomas', 'Disease', 'MESH:D010235', (76, 90)) ('paragangliomas', 'Disease', (76, 90)) ('mutation', 'Var', (48, 56)) ('SDHB', 'Gene', (43, 47)) ('paragangliomas', 'Phenotype', 'HP:0002668', (76, 90)) ('paraganglioma', 'Phenotype', 'HP:0002668', (76, 89)) 96527 20540712 The fact that SDHB mutation carriers often present as apparently non-familial cases was suggestive of reduced penetrance, and even founder mutations of SDHB have presented initially in isolated cases or families. ('mutation', 'Var', (19, 27)) ('SDHB', 'Gene', (152, 156)) ('SDHB', 'Gene', '6390', (14, 18)) ('SDHB', 'Gene', (14, 18)) ('SDHB', 'Gene', '6390', (152, 156)) 96533 20540712 The further elucidation of the true penetrance of SDHB mutations requires the description of many more families in a manner similar to that described here. ('mutations', 'Var', (55, 64)) ('SDHB', 'Gene', (50, 54)) ('man', 'Species', '9606', (117, 120)) ('man', 'Species', '9606', (93, 96)) ('SDHB', 'Gene', '6390', (50, 54)) 96534 20540712 In summary, we described a large and extensively screened family with a germline SDHB mutation. ('SDHB', 'Gene', (81, 85)) ('SDHB', 'Gene', '6390', (81, 85)) ('mutation', 'Var', (86, 94)) 96537 33938650 Crude annual incidence rate of medullary thyroid cancer and RET mutation frequency Medullary thyroid carcinoma (MTC) represents 5%-10% of all thyroid cancers. ('thyroid cancer', 'Phenotype', 'HP:0002890', (41, 55)) ('thyroid carcinoma', 'Disease', (93, 110)) ('RET', 'Gene', (60, 63)) ('thyroid cancer', 'Disease', 'MESH:D013964', (142, 156)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (93, 110)) ('cancers', 'Phenotype', 'HP:0002664', (150, 157)) ('cancer', 'Phenotype', 'HP:0002664', (49, 55)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (142, 156)) ('thyroid cancers', 'Disease', (142, 157)) ('cancer', 'Phenotype', 'HP:0002664', (150, 156)) ('thyroid cancer', 'Disease', (41, 55)) ('mutation', 'Var', (64, 72)) ('carcinoma', 'Phenotype', 'HP:0030731', (101, 110)) ('RET', 'Gene', '5979', (60, 63)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (31, 55)) ('Medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (83, 110)) ('thyroid cancer', 'Disease', 'MESH:D013964', (41, 55)) ('thyroid cancers', 'Disease', 'MESH:D013964', (142, 157)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (93, 110)) ('MTC', 'Phenotype', 'HP:0002865', (112, 115)) 96549 33938650 In this article, we assessed the frequency and type of RET mutation in Slovenian MTC patient population diagnosed between 1995 and 2015 and estimated the crude annual incidence of MTC. ('patient', 'Species', '9606', (85, 92)) ('RET', 'Gene', '5979', (55, 58)) ('MTC', 'Phenotype', 'HP:0002865', (180, 183)) ('mutation', 'Var', (59, 67)) ('RET', 'Gene', (55, 58)) ('MTC', 'Phenotype', 'HP:0002865', (81, 84)) 96567 33938650 Point mutations of the RET gene were detected by single-strand conformation analysis and DNA sequencing. ('Point mutations', 'Var', (0, 15)) ('RET', 'Gene', (23, 26)) ('RET', 'Gene', '5979', (23, 26)) 96572 33938650 RET mutation was discovered in all 21 patients with a positive family history (21/21) and in only 14.2% of patients with a negative family history (16/113). ('RET', 'Gene', '5979', (0, 3)) ('mutation', 'Var', (4, 12)) ('RET', 'Gene', (0, 3)) ('patients', 'Species', '9606', (38, 46)) ('patients', 'Species', '9606', (107, 115)) 96589 33938650 The most frequent mutations were RET germline mutations of codons 634 and 618 (30.0%), and exon 11 was the most frequently altered exon. ('RET', 'Gene', (33, 36)) ('RET', 'Gene', '5979', (33, 36)) ('mutations', 'Var', (18, 27)) 96594 33938650 On the other hand, the V804M mutation in exon 14, the most frequent RET mutation in Italy, was found in just two of our patients. ('V804M', 'Var', (23, 28)) ('RET', 'Gene', (68, 71)) ('patients', 'Species', '9606', (120, 128)) ('RET', 'Gene', '5979', (68, 71)) ('V804M', 'Mutation', 'rs79658334', (23, 28)) 96595 33938650 The population-specific variety of RET mutations has already been reported by some authors. ('RET', 'Gene', (35, 38)) ('RET', 'Gene', '5979', (35, 38)) ('mutations', 'Var', (39, 48)) 96596 33938650 In our study, an M918T mutation, associated with MEN 2B, was discovered in exon 16 in an eight-year-old patient. ('MEN 2B', 'Gene', '5979', (49, 55)) ('M918T', 'Var', (17, 22)) ('patient', 'Species', '9606', (104, 111)) ('M918T', 'Mutation', 'rs74799832', (17, 22)) ('MEN 2B', 'Gene', (49, 55)) 96599 33938650 Although children with de novo RET mutations are usually recognized because of symptomatic MTC or pheochromocytoma, our patient was discovered as a de novo M918T mutation carrier due to nonendocrine disease manifestations (intestinal neuronal dysplasia, tetralogy of Fallot, hypothyroidism, bilateral pyelectasis, short stature, and hypermobility syndrome). ('intestinal neuronal dysplasia', 'Disease', (223, 252)) ('hypothyroidism', 'Disease', (275, 289)) ('M918T', 'Mutation', 'rs74799832', (156, 161)) ('mutation', 'Var', (162, 170)) ('hypothyroidism', 'Disease', 'MESH:D007037', (275, 289)) ('hypothyroidism', 'Phenotype', 'HP:0000821', (275, 289)) ('RET', 'Gene', '5979', (31, 34)) ('hypermobility syndrome', 'Disease', 'MESH:C536196', (333, 355)) ('short stature', 'Phenotype', 'HP:0004322', (314, 327)) ('children', 'Species', '9606', (9, 17)) ('patient', 'Species', '9606', (120, 127)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (98, 114)) ('MTC', 'Phenotype', 'HP:0002865', (91, 94)) ('M918T', 'Var', (156, 161)) ('hypermobility syndrome', 'Disease', (333, 355)) ('intestinal neuronal dysplasia', 'Disease', 'MESH:C537394', (223, 252)) ('RET', 'Gene', (31, 34)) ('pheochromocytoma', 'Disease', (98, 114)) ('tetralogy of Fallot', 'Phenotype', 'HP:0001636', (254, 273)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (98, 114)) ('bilateral pyelectasis', 'Disease', (291, 312)) ('bilateral pyelectasis', 'Phenotype', 'HP:0011129', (291, 312)) ('short stature', 'Disease', (314, 327)) ('tetralogy of Fallot', 'Disease', (254, 273)) ('mutations', 'Var', (35, 44)) 96600 33938650 Specific RET mutations create a particular phenotype and affect the clinical course of MTC, with a strong genotype-phenotype correlation. ('MTC', 'Phenotype', 'HP:0002865', (87, 90)) ('affect', 'Reg', (57, 63)) ('RET', 'Gene', '5979', (9, 12)) ('MTC', 'Disease', (87, 90)) ('mutations', 'Var', (13, 22)) ('create', 'Reg', (23, 29)) ('RET', 'Gene', (9, 12)) 96601 33938650 In our patients with MTC, the mutations on the cysteine-rich extracellular domains of the tyrosine kinase receptor were associated with unilateral or bilateral pheochromocytoma in 39.1% and with primary hyperparathyroidism in 17.4% of cases. ('hyperparathyroidism', 'Disease', (203, 222)) ('MTC', 'Phenotype', 'HP:0002865', (21, 24)) ('associated', 'Reg', (120, 130)) ('pheochromocytoma', 'Disease', (160, 176)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (160, 176)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (160, 176)) ('hyperparathyroidism', 'Disease', 'MESH:D006961', (203, 222)) ('mutations', 'Var', (30, 39)) ('primary hyperparathyroidism', 'Phenotype', 'HP:0008200', (195, 222)) ('cysteine', 'Chemical', 'MESH:D003545', (47, 55)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (203, 222)) ('patients', 'Species', '9606', (7, 15)) ('unilateral', 'Disease', (136, 146)) 96605 33938650 Genetic screening revealed a codon 634 mutation in all patients. ('patients', 'Species', '9606', (55, 63)) ('codon 634', 'Var', (29, 38)) ('revealed', 'Reg', (18, 26)) 96607 33938650 Among the families investigated in our study, one patient with a C618S mutation in exon 10 had MTC and Hirschsprung's disease. ('MTC', 'Disease', (95, 98)) ("Hirschsprung's disease", 'Disease', (103, 125)) ("Hirschsprung's disease", 'Phenotype', 'HP:0002251', (103, 125)) ('C618S', 'Var', (65, 70)) ("Hirschsprung's disease", 'Disease', 'MESH:D006627', (103, 125)) ('MTC', 'Phenotype', 'HP:0002865', (95, 98)) ('patient', 'Species', '9606', (50, 57)) ('C618S', 'Mutation', 'rs76262710', (65, 70)) 96608 33938650 The coexistence of MTC with Hirschsprung's disease is rare and is usually associated with mutations of codon 620 and, to a lesser extent, of codons 609, 611, and 618. ("Hirschsprung's disease", 'Disease', (28, 50)) ('mutations', 'Var', (90, 99)) ("Hirschsprung's disease", 'Phenotype', 'HP:0002251', (28, 50)) ("Hirschsprung's disease", 'Disease', 'MESH:D006627', (28, 50)) ('codon 620', 'Var', (103, 112)) ('MTC', 'Phenotype', 'HP:0002865', (19, 22)) ('associated', 'Reg', (74, 84)) 96609 33938650 Patients with these double-functioning mutations, due to their ability to be simultaneously activating and inactivating, should be monitored for Hirschsprung's disease development. ("Hirschsprung's disease", 'Disease', (145, 167)) ('mutations', 'Var', (39, 48)) ('Patients', 'Species', '9606', (0, 8)) ("Hirschsprung's disease", 'Phenotype', 'HP:0002251', (145, 167)) ("Hirschsprung's disease", 'Disease', 'MESH:D006627', (145, 167)) ('activating', 'PosReg', (92, 102)) 96611 33938650 Some authors proposed that the clinical characteristics of the MEN 2A syndrome are modified by specific polymorphic variants or haplotypes of the RET gene. ('haplotypes', 'Var', (128, 138)) ('polymorphic variants', 'Var', (104, 124)) ('RET', 'Gene', '5979', (146, 149)) ('MEN 2A', 'Gene', (63, 69)) ('RET', 'Gene', (146, 149)) ('MEN 2A', 'Gene', '5979', (63, 69)) ('modified', 'Reg', (83, 91)) 96613 33938650 Since exons 8 and 9 were not tested in our population, it is interesting to note that researchers from Ireland in 2013 reported on a Slovenian patient with the G533C mutation as the first case of a RET mutation in exon 8. ('RET', 'Gene', (198, 201)) ('patient', 'Species', '9606', (143, 150)) ('RET', 'Gene', '5979', (198, 201)) ('G533C', 'Var', (160, 165)) ('G533C', 'Mutation', 'rs75873440', (160, 165)) 96616 33938650 Despite the small population of patients with MTC in our study, the high frequency of mutations in the moderate risk category, and prophylactic TT performed relatively late in life, MTC patients with sporadic and hereditary form of the disease significantly differed in age. ('MTC', 'Phenotype', 'HP:0002865', (182, 185)) ('mutations', 'Var', (86, 95)) ('patients', 'Species', '9606', (32, 40)) ('differed', 'Reg', (258, 266)) ('MTC', 'Phenotype', 'HP:0002865', (46, 49)) ('patients', 'Species', '9606', (186, 194)) 96625 33938650 The presence of germline RET mutation in 14.2% of apparently sporadic MTC cases reinforces the need for RET genetic screening in all patients with MTC. ('mutation', 'Var', (29, 37)) ('RET', 'Gene', '5979', (25, 28)) ('RET', 'Gene', '5979', (104, 107)) ('germline', 'Var', (16, 24)) ('MTC', 'Phenotype', 'HP:0002865', (147, 150)) ('presence', 'Reg', (4, 12)) ('patients', 'Species', '9606', (133, 141)) ('MTC', 'Phenotype', 'HP:0002865', (70, 73)) ('RET', 'Gene', (25, 28)) ('MTC', 'Disease', (70, 73)) ('RET', 'Gene', (104, 107)) 96627 33938650 A recent Spanish study on BRCA mutation testing reported 3.6 tested relatives/proband, similarly to the Italian report on RET families. ('RET', 'Gene', '5979', (122, 125)) ('BRCA', 'Gene', (26, 30)) ('mutation', 'Var', (31, 39)) ('RET', 'Gene', (122, 125)) ('BRCA', 'Gene', '672', (26, 30)) 96630 33938650 Annual incidence increase and nation-specific frequency of discovered RET mutations justify the continuation of gene counseling and testing of MTC patients in Slovenia. ('MTC', 'Phenotype', 'HP:0002865', (143, 146)) ('RET', 'Gene', '5979', (70, 73)) ('mutations', 'Var', (74, 83)) ('patients', 'Species', '9606', (147, 155)) ('RET', 'Gene', (70, 73)) 96636 33863293 High expression of GMFG predicted worse OS in GBM (HR = 1.5, P = 0.017), LGG (HR = 2.2, P < 0.001), LUSC (HR = 1.4, P = 0.022) and ocular melanomas (UVM) (HR = 7, P < 0.001), as well as worse DFS in LGG (HR = 1.8, P < 0.001) and prostate cancer (PRAD) (HR = 1.9, P = 0.004). ('melanoma', 'Phenotype', 'HP:0002861', (138, 146)) ('High expression', 'Var', (0, 15)) ('LUSC', 'Disease', (100, 104)) ('ocular melanomas', 'Phenotype', 'HP:0025534', (131, 147)) ('prostate cancer', 'Disease', (229, 244)) ('LGG', 'Disease', (199, 202)) ('ocular melanomas', 'Disease', 'MESH:D008545', (131, 147)) ('LGG', 'Disease', (73, 76)) ('GMFG', 'Gene', (19, 23)) ('cancer', 'Phenotype', 'HP:0002664', (238, 244)) ('GBM', 'Disease', (46, 49)) ('ocular melanomas', 'Disease', (131, 147)) ('prostate cancer', 'Disease', 'MESH:D011471', (229, 244)) ('prostate cancer', 'Phenotype', 'HP:0012125', (229, 244)) ('melanomas', 'Phenotype', 'HP:0002861', (138, 147)) ('GBM', 'Phenotype', 'HP:0012174', (46, 49)) ('LUSC', 'Phenotype', 'HP:0030359', (100, 104)) 96637 33863293 In contrast, high expression of GMFG was associated with better OS in skin cutaneous melanoma (SKCM) (HR = 0.59, P < 0.001) and thymoma (THYM) (HR = 0.098, P = 0.031), as well as better DFS in bile duct cancer (CHOL) (HR = 0.2, P = 0.003). ('THYM', 'Phenotype', 'HP:0100522', (137, 141)) ('skin cutaneous melanoma', 'Disease', 'MESH:C562393', (70, 93)) ('GMFG', 'Gene', (32, 36)) ('bile duct cancer', 'Phenotype', 'HP:0030153', (193, 209)) ('high expression', 'Var', (13, 28)) ('bile duct cancer', 'Disease', (193, 209)) ('thymoma', 'Phenotype', 'HP:0100522', (128, 135)) ('melanoma', 'Phenotype', 'HP:0002861', (85, 93)) ('skin cutaneous melanoma', 'Disease', (70, 93)) ('thymoma', 'Disease', 'MESH:D013945', (128, 135)) ('bile duct cancer', 'Disease', 'MESH:D001650', (193, 209)) ('thymoma', 'Disease', (128, 135)) ('cancer', 'Phenotype', 'HP:0002664', (203, 209)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (75, 93)) ('CHOL', 'Disease', (211, 215)) ('CHOL', 'Disease', 'None', (211, 215)) 96639 33863293 Our study preliminarily identified that GMFG may cause different survivals for different cancers through modulating tumor progression, immune response status and tissue-specific tumor microenvironment (TME). ('iron', 'Chemical', 'MESH:D007501', (192, 196)) ('immune response', 'CPA', (135, 150)) ('tumor', 'Disease', (178, 183)) ('GMFG', 'Var', (40, 44)) ('cancers', 'Phenotype', 'HP:0002664', (89, 96)) ('tumor', 'Disease', 'MESH:D009369', (116, 121)) ('cancers', 'Disease', 'MESH:D009369', (89, 96)) ('cancers', 'Disease', (89, 96)) ('survivals', 'Disease', (65, 74)) ('tumor', 'Disease', 'MESH:D009369', (178, 183)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('cause', 'Reg', (49, 54)) ('tumor', 'Disease', (116, 121)) ('modulating', 'Reg', (105, 115)) ('tumor', 'Phenotype', 'HP:0002664', (178, 183)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) 96645 33863293 These two studies demonstrated that GMFG could promote the migration and proliferation of ovarian and colorectal cancer cells, and the high expression of GMFG was related to poor survival outcome for ovarian cancer patients. ('ovarian', 'Disease', 'MESH:D010049', (200, 207)) ('cancer', 'Phenotype', 'HP:0002664', (208, 214)) ('ovarian cancer', 'Disease', 'MESH:D010051', (200, 214)) ('related', 'Reg', (163, 170)) ('cancer', 'Phenotype', 'HP:0002664', (113, 119)) ('high', 'Var', (135, 139)) ('ovarian', 'Disease', (90, 97)) ('colorectal cancer', 'Disease', 'MESH:D015179', (102, 119)) ('migration', 'CPA', (59, 68)) ('ovarian cancer', 'Disease', (200, 214)) ('colorectal cancer', 'Disease', (102, 119)) ('promote', 'PosReg', (47, 54)) ('ovarian cancer', 'Phenotype', 'HP:0100615', (200, 214)) ('ovarian', 'Disease', (200, 207)) ('patients', 'Species', '9606', (215, 223)) ('ovarian', 'Disease', 'MESH:D010049', (90, 97)) ('proliferation', 'CPA', (73, 86)) ('rectal cancer', 'Phenotype', 'HP:0100743', (106, 119)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (102, 119)) 96663 33863293 1c, high expression of GMFG was correlated with early pathological stage in bladder cancer (BLCA) (P = 0.016), LUAD (P = 0.015), skin cutaneous melanoma (SKCM) (P = 0.006) and thyroid cancer (THCA) (P = 0.01), but was linked with advanced pathological stage in stomach cancer (STAD) (P = 0.028). ('skin cutaneous melanoma', 'Disease', (129, 152)) ('cancer', 'Phenotype', 'HP:0002664', (184, 190)) ('high expression', 'Var', (4, 19)) ('melanoma', 'Phenotype', 'HP:0002861', (144, 152)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (134, 152)) ('thyroid cancer', 'Disease', (176, 190)) ('stomach cancer', 'Disease', 'MESH:D013274', (261, 275)) ('stomach cancer', 'Phenotype', 'HP:0012126', (261, 275)) ('LUAD', 'Phenotype', 'HP:0030078', (111, 115)) ('THCA', 'Phenotype', 'HP:0002890', (192, 196)) ('thyroid cancer', 'Disease', 'MESH:D013964', (176, 190)) ('cancer', 'Phenotype', 'HP:0002664', (269, 275)) ('correlated', 'Reg', (32, 42)) ('LUAD', 'Disease', (111, 115)) ('GMFG', 'Gene', (23, 27)) ('cancer', 'Phenotype', 'HP:0002664', (84, 90)) ('bladder cancer', 'Disease', 'MESH:D001749', (76, 90)) ('bladder cancer', 'Disease', (76, 90)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (176, 190)) ('stomach cancer', 'Disease', (261, 275)) ('bladder cancer', 'Phenotype', 'HP:0009725', (76, 90)) ('skin cutaneous melanoma', 'Disease', 'MESH:C562393', (129, 152)) ('BLCA', 'Phenotype', 'HP:0009725', (92, 96)) 96664 33863293 For survival outcome, high expression of GMFG predicted worse OS in GBM (HR = 1.5, P = 0.017), LGG (HR = 2.2, P < 0.001), LUSC (HR = 1.4, P = 0.022) and UVM (HR = 7, P < 0.001), as well as worse DFS in LGG (HR = 1.8, P < 0.001) and prostate cancer (PRAD) (HR = 1.9, P = 0.004). ('high expression', 'Var', (22, 37)) ('LUSC', 'Disease', (122, 126)) ('prostate cancer', 'Disease', (232, 247)) ('LGG', 'Disease', (202, 205)) ('GBM', 'Phenotype', 'HP:0012174', (68, 71)) ('cancer', 'Phenotype', 'HP:0002664', (241, 247)) ('prostate cancer', 'Disease', 'MESH:D011471', (232, 247)) ('prostate cancer', 'Phenotype', 'HP:0012125', (232, 247)) ('LUSC', 'Phenotype', 'HP:0030359', (122, 126)) ('LGG', 'Disease', (95, 98)) ('GMFG', 'Gene', (41, 45)) ('UVM', 'Disease', (153, 156)) ('GBM', 'Disease', (68, 71)) 96665 33863293 In contrast, high expression of GMFG was associated with better OS in SKCM (HR = 0.59, P < 0.001) and THYM (HR = 0.098, P = 0.031), as well as better DFS in bile duct cancer (CHOL) (HR = 0.2, P = 0.003) (Fig. ('bile duct cancer', 'Disease', 'MESH:D001650', (157, 173)) ('CHOL', 'Disease', 'None', (175, 179)) ('THYM', 'Phenotype', 'HP:0100522', (102, 106)) ('SKCM', 'Disease', (70, 74)) ('CHOL', 'Disease', (175, 179)) ('GMFG', 'Gene', (32, 36)) ('high expression', 'Var', (13, 28)) ('THYM', 'Disease', (102, 106)) ('bile duct cancer', 'Phenotype', 'HP:0030153', (157, 173)) ('cancer', 'Phenotype', 'HP:0002664', (167, 173)) ('better', 'PosReg', (57, 63)) ('bile duct cancer', 'Disease', (157, 173)) 96671 33863293 We also summarized the top 10 most significant items of GO/KEGG pathways for each individual cancer (Supplementary file 1-4: Table S1-S4), and we found that GMFG was notably associated with the biological process of immune response in most cancers, so we decided to analyze the correlation between GMFG and its immunomodulators co-expression genes. ('cancer', 'Disease', (93, 99)) ('associated with', 'Reg', (174, 189)) ('cancer', 'Disease', 'MESH:D009369', (93, 99)) ('cancer', 'Phenotype', 'HP:0002664', (240, 246)) ('cancer', 'Disease', (240, 246)) ('cancer', 'Phenotype', 'HP:0002664', (93, 99)) ('GMFG', 'Var', (157, 161)) ('cancer', 'Disease', 'MESH:D009369', (240, 246)) ('cancers', 'Phenotype', 'HP:0002664', (240, 247)) ('cancers', 'Disease', (240, 247)) ('cancers', 'Disease', 'MESH:D009369', (240, 247)) 96673 33863293 As for co-stimulators, GMFG was highly associated with CD80 and CD28 in most cancers. ('cancers', 'Disease', 'MESH:D009369', (77, 84)) ('CD28', 'Gene', (64, 68)) ('cancers', 'Phenotype', 'HP:0002664', (77, 84)) ('GMFG', 'Var', (23, 27)) ('cancers', 'Disease', (77, 84)) ('CD28', 'Gene', '940', (64, 68)) ('CD80', 'Gene', (55, 59)) ('associated', 'Reg', (39, 49)) ('cancer', 'Phenotype', 'HP:0002664', (77, 83)) ('CD80', 'Gene', '941', (55, 59)) 96683 33863293 In addition, high expression of GMFG was associated with early pathological stage in four cancers (BLCA, LUAD, SKCM, and THCA), but was correlated with advanced pathological stage in STAD. ('cancers', 'Disease', (90, 97)) ('SKCM', 'Disease', (111, 115)) ('associated', 'Reg', (41, 51)) ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('high', 'Var', (13, 17)) ('BLCA', 'Phenotype', 'HP:0009725', (99, 103)) ('GMFG', 'Gene', (32, 36)) ('LUAD', 'Disease', (105, 109)) ('THCA', 'Phenotype', 'HP:0002890', (121, 125)) ('correlated', 'Reg', (136, 146)) ('LUAD', 'Phenotype', 'HP:0030078', (105, 109)) ('cancers', 'Phenotype', 'HP:0002664', (90, 97)) ('cancers', 'Disease', 'MESH:D009369', (90, 97)) 96684 33863293 Moreover, the associations of GMFG expression with OS and DFS were also investigated, and high expression of GMFG predicted worse OS in four cancers (GBM, LGG, LUSC, and UVM), and worse DFS for LGG and PRAD, but was associated with better OS in SKCM and THYM, better DFS in CHOL. ('better OS', 'Disease', (232, 241)) ('PRAD', 'Disease', (202, 206)) ('LUSC', 'Phenotype', 'HP:0030359', (160, 164)) ('high expression', 'Var', (90, 105)) ('SKCM', 'Disease', (245, 249)) ('cancers', 'Phenotype', 'HP:0002664', (141, 148)) ('CHOL', 'Disease', 'None', (274, 278)) ('cancers', 'Disease', (141, 148)) ('LGG', 'Disease', (155, 158)) ('THYM', 'Phenotype', 'HP:0100522', (254, 258)) ('cancer', 'Phenotype', 'HP:0002664', (141, 147)) ('GMFG', 'Gene', (109, 113)) ('CHOL', 'Disease', (274, 278)) ('GBM', 'Phenotype', 'HP:0012174', (150, 153)) ('worse OS', 'Disease', (124, 132)) ('LUSC', 'Disease', (160, 164)) ('LGG', 'Disease', (194, 197)) ('cancers', 'Disease', 'MESH:D009369', (141, 148)) ('THYM', 'Disease', (254, 258)) 96692 33863293 Taken together, that GMFG enhances both the cancer progression and the immune defense, and patients' survival outcome may depend on the balance between the speed of cancer development and the ability of immune system against cancer tissues. ('immune defense', 'CPA', (71, 85)) ('patients', 'Species', '9606', (91, 99)) ('cancer', 'Disease', 'MESH:D009369', (225, 231)) ('cancer', 'Phenotype', 'HP:0002664', (165, 171)) ('cancer', 'Disease', (225, 231)) ('cancer', 'Disease', (44, 50)) ('cancer', 'Disease', 'MESH:D009369', (44, 50)) ('GMFG', 'Var', (21, 25)) ('enhances', 'PosReg', (26, 34)) ('cancer', 'Disease', (165, 171)) ('cancer', 'Disease', 'MESH:D009369', (165, 171)) ('cancer', 'Phenotype', 'HP:0002664', (225, 231)) ('cancer', 'Phenotype', 'HP:0002664', (44, 50)) 96695 33863293 Recent studies reported that GMFG regulates monocyte migration by modulating ITGB1, and functions as a negative regulator of Toll-like receptor 4 (TLR4) signaling through facilitating TLR4 endocytic trafficking in macrophages. ('ITGB1', 'Gene', (77, 82)) ('GMFG', 'Var', (29, 33)) ('TLR4', 'Gene', (147, 151)) ('TLR4', 'Gene', '7099', (184, 188)) ('modulating', 'Reg', (66, 76)) ('regulates', 'Reg', (34, 43)) ('facilitating', 'PosReg', (171, 183)) ('ITGB1', 'Gene', '3688', (77, 82)) ('TLR4', 'Gene', (184, 188)) ('Toll-like receptor 4', 'Gene', '7099', (125, 145)) ('TLR4', 'Gene', '7099', (147, 151)) ('Toll-like receptor 4', 'Gene', (125, 145)) ('monocyte migration', 'CPA', (44, 62)) 96723 29134959 Targeting RET-driven cancers: lessons from evolving preclinical and clinical landscapes The gene encoding the receptor-tyrosine kinase RET was first discovered more than three decades ago, and activating RET rearrangements and mutations have since been identified as actionable drivers of oncogenesis. ('cancer', 'Phenotype', 'HP:0002664', (21, 27)) ('RET', 'Gene', '5979', (204, 207)) ('cancers', 'Disease', 'MESH:D009369', (21, 28)) ('RET', 'Gene', '5979', (135, 138)) ('RET', 'Gene', (10, 13)) ('tyrosine', 'Chemical', 'MESH:D014443', (119, 127)) ('cancers', 'Phenotype', 'HP:0002664', (21, 28)) ('RET', 'Gene', (135, 138)) ('rearrangements', 'Var', (208, 222)) ('cancers', 'Disease', (21, 28)) ('activating', 'PosReg', (193, 203)) ('RET', 'Gene', (204, 207)) ('RET', 'Gene', '5979', (10, 13)) ('mutations', 'Var', (227, 236)) 96725 29134959 Nevertheless, response rates to RET-directed therapy are modest compared with those achieved using targeted therapies matched to other oncogenic drivers of solid tumours, such as sensitizing EGFR or BRAFV600E mutations, or ALK or ROS1 rearrangements. ('solid tumours', 'Disease', 'MESH:D009369', (156, 169)) ('BRAFV600E', 'Mutation', 'rs113488022', (199, 208)) ('ALK', 'Gene', '238', (223, 226)) ('solid tumours', 'Disease', (156, 169)) ('ROS1', 'Gene', (230, 234)) ('EGFR', 'Gene', '1956', (191, 195)) ('EGFR', 'Gene', (191, 195)) ('ROS1', 'Gene', '6098', (230, 234)) ('tumour', 'Phenotype', 'HP:0002664', (162, 168)) ('tumours', 'Phenotype', 'HP:0002664', (162, 169)) ('ALK', 'Gene', (223, 226)) ('rearrangements', 'Var', (235, 249)) ('BRAFV600E mutations', 'Var', (199, 218)) 96740 29134959 Oncogenic activation of RET can occur by two primary mechanisms: first, chromosomal rearrangements, producing hybrid proteins that fuse the RET kinase domain with a partner protein that often contains a dimerization domain; second, mutations that directly or indirectly activate the kinase. ('fuse', 'Gene', '2522', (131, 135)) ('fuse', 'Gene', (131, 135)) ('mutations', 'Var', (232, 241)) ('dimerization domain', 'MPA', (203, 222)) ('activate', 'PosReg', (270, 278)) 96741 29134959 These somatic or germline alterations are implicated in the pathogenesis of several human cancers. ('cancers', 'Disease', (90, 97)) ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('alterations', 'Var', (26, 37)) ('human', 'Species', '9606', (84, 89)) ('cancers', 'Phenotype', 'HP:0002664', (90, 97)) ('implicated', 'Reg', (42, 52)) ('cancers', 'Disease', 'MESH:D009369', (90, 97)) 96742 29134959 Moreover, RET rearrangements and mutations promote cell proliferation and survival when expressed in human cancer cell lines, recapitulate the features of human cancers (lung and thyroid carcinomas) in genetically engineered mouse models, and occur in cancers in a predominantly mutually exclusive pattern with other bona fide drivers of tumorigenesis. ('cancer', 'Disease', 'MESH:D009369', (252, 258)) ('promote', 'PosReg', (43, 50)) ('cancers', 'Disease', 'MESH:D009369', (252, 259)) ('mutations', 'Var', (33, 42)) ('cancers', 'Phenotype', 'HP:0002664', (161, 168)) ('cell proliferation', 'CPA', (51, 69)) ('cancer', 'Disease', 'MESH:D009369', (107, 113)) ('cancer', 'Disease', (161, 167)) ('cancers', 'Disease', (161, 168)) ('thyroid carcinomas', 'Disease', 'MESH:D013964', (179, 197)) ('cancer', 'Phenotype', 'HP:0002664', (161, 167)) ('thyroid carcinomas', 'Disease', (179, 197)) ('RET', 'Gene', (10, 13)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (179, 196)) ('cancers', 'Phenotype', 'HP:0002664', (252, 259)) ('cancers', 'Disease', (252, 259)) ('cancer', 'Disease', (252, 258)) ('thyroid carcinomas', 'Phenotype', 'HP:0002890', (179, 197)) ('rearrangements', 'Var', (14, 28)) ('mouse', 'Species', '10090', (225, 230)) ('human', 'Species', '9606', (101, 106)) ('cancer', 'Disease', 'MESH:D009369', (161, 167)) ('cancers', 'Disease', 'MESH:D009369', (161, 168)) ('cancer', 'Phenotype', 'HP:0002664', (252, 258)) ('cancer', 'Disease', (107, 113)) ('survival', 'CPA', (74, 82)) ('cancer', 'Phenotype', 'HP:0002664', (107, 113)) ('human', 'Species', '9606', (155, 160)) ('carcinoma', 'Phenotype', 'HP:0030731', (187, 196)) ('carcinomas', 'Phenotype', 'HP:0030731', (187, 197)) 96744 29134959 RET has been shown to be a direct transcriptional target of the oestrogen receptor (ER), a finding that is consistent with the possible ER-mediated increase in RET expression in rare medullary thyroid cancers (MTCs) from families with inactivating germ-line mutations in ESR2 (encodes ERbeta that represses RET activation), as well as the increased expression of RET in some ER-positive breast cancers that have acquired resistance to anti-oestrogen therapy, and the re-sensitization of cells from such breast cancers to anti-oestrogen treatment through RET inhibition. ('cancers', 'Phenotype', 'HP:0002664', (510, 517)) ('cancers', 'Phenotype', 'HP:0002664', (201, 208)) ('breast cancer', 'Phenotype', 'HP:0003002', (387, 400)) ('breast cancers', 'Disease', 'MESH:D001943', (387, 401)) ('breast cancers', 'Disease', (387, 401)) ('ER', 'Gene', '2069', (136, 138)) ('medullary thyroid cancers', 'Phenotype', 'HP:0002865', (183, 208)) ('cancer', 'Phenotype', 'HP:0002664', (201, 207)) ('cancer', 'Phenotype', 'HP:0002664', (510, 516)) ('breast cancers', 'Disease', 'MESH:D001943', (503, 517)) ('breast cancers', 'Disease', (503, 517)) ('increased', 'PosReg', (339, 348)) ('breast cancers', 'Phenotype', 'HP:0003002', (387, 401)) ('ERbeta', 'Gene', (285, 291)) ('increase', 'PosReg', (148, 156)) ('ERbeta', 'Gene', '2099', (285, 291)) ('thyroid cancers', 'Disease', 'MESH:D013964', (193, 208)) ('breast cancers', 'Phenotype', 'HP:0003002', (503, 517)) ('ER', 'Gene', '2069', (285, 287)) ('RET', 'Gene', (160, 163)) ('ER', 'Gene', '2069', (84, 86)) ('breast cancer', 'Phenotype', 'HP:0003002', (503, 516)) ('expression', 'MPA', (349, 359)) ('cancers', 'Phenotype', 'HP:0002664', (394, 401)) ('mutations', 'Var', (258, 267)) ('cancer', 'Phenotype', 'HP:0002664', (394, 400)) ('ESR2', 'Gene', '2100', (271, 275)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (193, 207)) ('thyroid cancers', 'Disease', (193, 208)) ('ESR2', 'Gene', (271, 275)) ('ER', 'Gene', '2069', (375, 377)) 96748 29134959 RET rearrangements were subsequently identified in tumours from patients with papillary thyroid carcinomas (PTCs) or NSCLCs, and are probably acquired early in carcinogenesis. ('carcinoma', 'Phenotype', 'HP:0030731', (96, 105)) ('papillary thyroid carcinomas', 'Disease', 'MESH:D000077273', (78, 106)) ('carcinogenesis', 'Disease', 'MESH:D063646', (160, 174)) ('carcinomas', 'Phenotype', 'HP:0030731', (96, 106)) ('thyroid carcinomas', 'Phenotype', 'HP:0002890', (88, 106)) ('patients', 'Species', '9606', (64, 72)) ('rearrangements', 'Var', (4, 18)) ('carcinogenesis', 'Disease', (160, 174)) ('NSCLCs', 'Disease', 'MESH:D002289', (117, 123)) ('tumour', 'Phenotype', 'HP:0002664', (51, 57)) ('RET', 'Gene', (0, 3)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (88, 105)) ('tumours', 'Phenotype', 'HP:0002664', (51, 58)) ('papillary thyroid carcinomas', 'Disease', (78, 106)) ('tumours', 'Disease', 'MESH:D009369', (51, 58)) ('papillary thyroid carcinomas', 'Phenotype', 'HP:0002895', (78, 106)) ('tumours', 'Disease', (51, 58)) ('NSCLCs', 'Disease', (117, 123)) 96755 29134959 RET rearrangement is hypothesized to result from the illegitimate repair of DNA double-strand breaks (DSBs) via non-homologous end joining and break-induced replication. ('DSBs', 'Chemical', '-', (102, 106)) ('non-homologous', 'Var', (112, 126)) ('DNA', 'Gene', (76, 79)) 96759 29134959 Beyond these two mechanisms, rearrangement might rarely cause simultaneous gain-of-function activity of RET and loss of function of its tumour-suppressor gene partners. ('loss of function', 'NegReg', (112, 128)) ('tumour', 'Disease', 'MESH:D009369', (136, 142)) ('gain-of-function', 'PosReg', (75, 91)) ('tumour', 'Disease', (136, 142)) ('RET', 'Gene', (104, 107)) ('activity', 'MPA', (92, 100)) ('rearrangement', 'Var', (29, 42)) ('tumour', 'Phenotype', 'HP:0002664', (136, 142)) 96761 29134959 In-frame RET rearrangements that include the RET kinase domain are activating in vitro and in vivo; exogenous expression of RET fusions in NIH/3T3 fibroblasts and thyrocytes results in morphological transformation, anchorage-independent growth, and subcutaneous tumour formation when engrafted in nude mice. ('fusions', 'Var', (128, 135)) ('tumour', 'Disease', (262, 268)) ('NIH/3T3', 'CellLine', 'CVCL:0594', (139, 146)) ('anchorage-independent growth', 'CPA', (215, 243)) ('nude mice', 'Species', '10090', (297, 306)) ('morphological transformation', 'CPA', (185, 213)) ('results in', 'Reg', (174, 184)) ('tumour', 'Phenotype', 'HP:0002664', (262, 268)) ('tumour', 'Disease', 'MESH:D009369', (262, 268)) ('RET', 'Gene', (124, 127)) ('subcutaneous tumour', 'Phenotype', 'HP:0001482', (249, 268)) 96764 29134959 RET rearrangements are identified in 1-2% of unselected patients with NSCLCs. ('NSCLCs', 'Disease', (70, 76)) ('patients', 'Species', '9606', (56, 64)) ('NSCLCs', 'Disease', 'MESH:D002289', (70, 76)) ('rearrangements', 'Var', (4, 18)) 96768 29134959 RET rearrangements tend to be mutually exclusive with other major lung-cancer drivers such as KRAS mutations, sensitizing EGFR mutations, and ALK or ROS1 rearrangements. ('lung-cancer', 'Disease', 'MESH:D008175', (66, 77)) ('ALK', 'Gene', '238', (142, 145)) ('KRAS', 'Gene', (94, 98)) ('rearrangements', 'Var', (4, 18)) ('lung-cancer', 'Disease', (66, 77)) ('KRAS', 'Gene', '3845', (94, 98)) ('mutations', 'Var', (99, 108)) ('cancer', 'Phenotype', 'HP:0002664', (71, 77)) ('ROS1', 'Gene', (149, 153)) ('ALK', 'Gene', (142, 145)) ('mutations', 'Var', (127, 136)) ('EGFR', 'Gene', '1956', (122, 126)) ('ROS1', 'Gene', '6098', (149, 153)) ('EGFR', 'Gene', (122, 126)) 96772 29134959 The application of more-comprehensive DNA and/or RNA sequencing techniques has led to the identification of RET rearrangements in other tumour types, including colorectal cancer, breast cancer, spitzoid neoplasms, medullary thyroid carcinoma, chronic myeloproliferative neoplasms, anaplastic thyroid carcinomas with a differentiated component, and poorly differentiated thyroid carcinomas. ('myeloproliferative neoplasms', 'Disease', 'MESH:D009196', (251, 279)) ('colorectal cancer', 'Disease', 'MESH:D015179', (160, 177)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (370, 387)) ('thyroid carcinomas', 'Disease', 'MESH:D013964', (292, 310)) ('carcinoma', 'Phenotype', 'HP:0030731', (232, 241)) ('neoplasms', 'Phenotype', 'HP:0002664', (203, 212)) ('colorectal cancer', 'Disease', (160, 177)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (292, 309)) ('thyroid carcinomas', 'Disease', 'MESH:D013964', (370, 388)) ('thyroid carcinomas', 'Disease', (370, 388)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (224, 241)) ('breast cancer', 'Phenotype', 'HP:0003002', (179, 192)) ('thyroid carcinomas', 'Phenotype', 'HP:0002890', (292, 310)) ('anaplastic thyroid carcinomas', 'Disease', (281, 310)) ('spitzoid neoplasms', 'Disease', (194, 212)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (370, 387)) ('anaplastic thyroid carcinomas', 'Disease', 'MESH:D065646', (281, 310)) ('tumour', 'Phenotype', 'HP:0002664', (136, 142)) ('thyroid carcinoma', 'Disease', (224, 241)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (214, 241)) ('carcinoma', 'Phenotype', 'HP:0030731', (300, 309)) ('carcinomas', 'Phenotype', 'HP:0030731', (300, 310)) ('breast cancer', 'Disease', 'MESH:D001943', (179, 192)) ('tumour', 'Disease', 'MESH:D009369', (136, 142)) ('tumour', 'Disease', (136, 142)) ('breast cancer', 'Disease', (179, 192)) ('spitzoid neoplasms', 'Disease', 'MESH:D009369', (194, 212)) ('thyroid carcinomas', 'Phenotype', 'HP:0002890', (370, 388)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (160, 177)) ('carcinoma', 'Phenotype', 'HP:0030731', (378, 387)) ('anaplastic thyroid carcinomas', 'Phenotype', 'HP:0011779', (281, 310)) ('cancer', 'Phenotype', 'HP:0002664', (171, 177)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (224, 241)) ('myeloproliferative neoplasms', 'Phenotype', 'HP:0005547', (251, 279)) ('carcinomas', 'Phenotype', 'HP:0030731', (378, 388)) ('neoplasms', 'Phenotype', 'HP:0002664', (270, 279)) ('cancer', 'Phenotype', 'HP:0002664', (186, 192)) ('RET', 'Gene', (108, 111)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (292, 309)) ('rearrangements', 'Var', (112, 126)) ('myeloproliferative neoplasms', 'Disease', (251, 279)) 96774 29134959 Earlier clinical series primarily focused on RT-PCR and FISH of tumour samples as screening tools, but more-comprehensive sequencing platforms (such as NGS of broad gene panels) afford the potential identification of RET rearrangements as in-frame events along with the detection of upstream partners and concurrent genomic alterations that involve genes other than RET. ('tumour', 'Disease', 'MESH:D009369', (64, 70)) ('tumour', 'Disease', (64, 70)) ('rearrangements', 'Var', (221, 235)) ('RET', 'Gene', (217, 220)) ('tumour', 'Phenotype', 'HP:0002664', (64, 70)) 96776 29134959 Nonsynonymous point mutations in RET are pathognomonic in subsets of familial and sporadic thyroid cancers. ('sporadic thyroid cancers', 'Disease', 'MESH:D013964', (82, 106)) ('RET', 'Gene', (33, 36)) ('pathognomonic', 'Reg', (41, 54)) ('sporadic thyroid cancers', 'Disease', (82, 106)) ('cancers', 'Phenotype', 'HP:0002664', (99, 106)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (91, 105)) ('Nonsynonymous point mutations', 'Var', (0, 29)) ('cancer', 'Phenotype', 'HP:0002664', (99, 105)) 96777 29134959 From a phenomic perspective, germ-line missense mutations are intimately linked with subtypes of the autosomal dominant multiple endocrine neoplasia type 2 (MEN2) syndrome : specifically MEN2A, MEN2B, and familial medullary thyroid carcinoma (FMTC), all three of which confer an increased risk of developing medullary thyroid carcinoma (MTC). ('carcinoma', 'Phenotype', 'HP:0030731', (326, 335)) ('neoplasia', 'Phenotype', 'HP:0002664', (139, 148)) ('carcinoma', 'Phenotype', 'HP:0030731', (232, 241)) ('MEN2B', 'Gene', (194, 199)) ('MEN2B', 'Gene', '5979', (194, 199)) ('missense mutations', 'Var', (39, 57)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (224, 241)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (129, 148)) ('MEN2A', 'Gene', '5979', (187, 192)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (120, 148)) ('MEN2A', 'Gene', (187, 192)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (214, 241)) ('thyroid carcinoma', 'Disease', (224, 241)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (318, 335)) ('multiple endocrine neoplasia', 'Disease', (120, 148)) ('thyroid carcinoma', 'Disease', (318, 335)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (224, 241)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (318, 335)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (308, 335)) 96779 29134959 RET mutations can be detected in the clinic using several types of assays, including NGS of both tumour and plasma DNA, although testing of a matched normal sample (e.g. ('tumour', 'Disease', (97, 103)) ('RET', 'Gene', (0, 3)) ('tumour', 'Phenotype', 'HP:0002664', (97, 103)) ('mutations', 'Var', (4, 13)) ('tumour', 'Disease', 'MESH:D009369', (97, 103)) 96781 29134959 Germ-line RET mutations involving exon 10 or 11 are found in the majority (>95%) of patients with MEN2A, which in turn is the most-common subtype of MEN2 (REF.). ('mutations', 'Var', (14, 23)) ('patients', 'Species', '9606', (84, 92)) ('most-common', 'Reg', (126, 137)) ('MEN2A', 'Gene', (98, 103)) ('MEN2A', 'Gene', '5979', (98, 103)) 96782 29134959 Mutation hotspots affect the cysteine-rich region of the protein's extracellular domain, resulting in the replacement of cysteine with a variety of other amino acids. ('cysteine', 'Chemical', 'MESH:D003545', (121, 129)) ('affect', 'Reg', (18, 24)) ('Mutation', 'Var', (0, 8)) ('cysteine', 'Chemical', 'MESH:D003545', (29, 37)) ('cysteine-rich region of the', 'MPA', (29, 56)) ('replacement', 'MPA', (106, 117)) ('cysteine', 'MPA', (121, 129)) 96783 29134959 These substitutions decrease the capacity of intramolecular disulphide-bond formation, thereby promoting the formation of intermolecular covalent disulphide bonds between free cysteine residues on separate RET monomers, resulting in increased receptor dimerization and activation (FIG. ('substitutions', 'Var', (6, 19)) ('disulphide', 'Chemical', '-', (146, 156)) ('formation', 'MPA', (109, 118)) ('cysteine', 'Chemical', 'MESH:D003545', (176, 184)) ('decrease', 'NegReg', (20, 28)) ('intramolecular disulphide-bond formation', 'MPA', (45, 85)) ('intermolecular covalent disulphide bonds', 'MPA', (122, 162)) ('disulphide', 'Chemical', '-', (60, 70)) ('dimerization', 'MPA', (252, 264)) ('receptor', 'Protein', (243, 251)) ('promoting', 'PosReg', (95, 104)) ('increased', 'PosReg', (233, 242)) ('activation', 'PosReg', (269, 279)) 96784 29134959 Mutations resulting in amino acid substitutions at codons for cysteine are implicated in this mechanism, namely codons 609, 611, 618, and 620 in exon 10, and codons 630 and 634 in exon 11 (REF.). ('codons 630', 'Var', (158, 168)) ('substitutions', 'Var', (34, 47)) ('cysteine', 'Chemical', 'MESH:D003545', (62, 70)) ('codons 609', 'Var', (112, 122)) 96785 29134959 The most-common genetic defect associated with MEN2A, found in more than 85% of patients, is a missense mutation that results in substitution of an alternate amino acid for cysteine at codon 634. ('MEN2A', 'Gene', '5979', (47, 52)) ('genetic defect', 'Disease', 'MESH:D030342', (16, 30)) ('results in', 'Reg', (118, 128)) ('substitution', 'Var', (129, 141)) ('genetic defect', 'Disease', (16, 30)) ('patients', 'Species', '9606', (80, 88)) ('cysteine', 'Chemical', 'MESH:D003545', (173, 181)) ('MEN2A', 'Gene', (47, 52)) 96787 29134959 As opposed to the RET extracellular domain mutations that occur in MEN2A, MEN2B is associated with germ-line intracellular kinase domain mutations, such as M918T (identified most patients) or A883F. ('M918T', 'Mutation', 'rs74799832', (156, 161)) ('A883F', 'Mutation', 'rs377767429', (192, 197)) ('A883F', 'Var', (192, 197)) ('associated', 'Reg', (83, 93)) ('MEN2B', 'Gene', (74, 79)) ('patients', 'Species', '9606', (179, 187)) ('M918T', 'Var', (156, 161)) ('MEN2A', 'Gene', (67, 72)) ('MEN2B', 'Gene', '5979', (74, 79)) ('MEN2A', 'Gene', '5979', (67, 72)) 96788 29134959 Interestingly, the protein encoded by the RETM918T variant can signal as a monomer, owing to an increased ATP-binding affinity and altered protein conformation, compared with wild-type RET, leading to a loss of autoinhibition. ('increased', 'PosReg', (96, 105)) ('protein conformation', 'MPA', (139, 159)) ('autoinhibition', 'MPA', (211, 225)) ('RETM918T', 'Mutation', 'rs74799832', (42, 50)) ('ATP', 'Chemical', 'MESH:D000255', (106, 109)) ('altered', 'Reg', (131, 138)) ('RETM918T', 'Var', (42, 50)) ('ATP-binding', 'Interaction', (106, 117)) ('loss', 'NegReg', (203, 207)) 96792 29134959 For example, while mutations in the same cysteine codons implicated in MEN2A are involved in FMTC, a higher frequency of non-C634 substitutions (involving C609, C611, C618, C620, and C630) and a lower frequency of C634 substitutions are noted in FMTC. ('involved', 'Reg', (81, 89)) ('C620', 'Var', (173, 177)) ('cysteine', 'Chemical', 'MESH:D003545', (41, 49)) ('C634', 'Var', (214, 218)) ('non-C634', 'Var', (121, 129)) ('C630', 'Var', (183, 187)) ('C611', 'Var', (161, 165)) ('C609', 'Var', (155, 159)) ('C618', 'Var', (167, 171)) ('MEN2A', 'Gene', (71, 76)) ('MEN2A', 'Gene', '5979', (71, 76)) 96793 29134959 Non-C634 substitutions carry a lower risk for the development of pheochromocytoma, hyperparathyroidism, and aggressive MTC compared to C634 substitutions. ('pheochromocytoma', 'Disease', 'MESH:D010673', (65, 81)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (65, 81)) ('Non-C634 substitutions', 'Var', (0, 22)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (83, 102)) ('aggressive MTC', 'Disease', (108, 122)) ('pheochromocytoma', 'Disease', (65, 81)) ('hyperparathyroidism', 'Disease', 'MESH:D006961', (83, 102)) ('hyperparathyroidism', 'Disease', (83, 102)) 96794 29134959 Intracellular domain mutations, resulting in substitutions at codons including V804, S891, and A883, also occur in FMTC; several of these intracellular mutations are likewise associated with a lower incidence of pheochromocytoma and hyperparathyroidism. ('pheochromocytoma and hyperparathyroidism', 'Disease', 'MESH:D010673', (212, 252)) ('V804', 'Var', (79, 83)) ('A883', 'Var', (95, 99)) ('substitutions', 'Var', (45, 58)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (233, 252)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (212, 228)) ('lower', 'NegReg', (193, 198)) ('S891', 'Var', (85, 89)) 96795 29134959 RET M918T mutations are identified in most of these patients, although other somatic RET mutations have also been described, including E768D and A883F; beyond point mutations, small insertions and deletions have also been detected. ('M918T', 'Var', (4, 9)) ('E768D', 'Var', (135, 140)) ('RET', 'Gene', (0, 3)) ('patients', 'Species', '9606', (52, 60)) ('M918T', 'Mutation', 'rs74799832', (4, 9)) ('A883F', 'Mutation', 'rs377767429', (145, 150)) ('E768D', 'Mutation', 'rs78014899', (135, 140)) ('A883F', 'Var', (145, 150)) 96796 29134959 RET mutations are less-commonly associated with sporadic pheochromocytoma (frequency of <15%). ('sporadic pheochromocytoma', 'Disease', (48, 73)) ('sporadic pheochromocytoma', 'Disease', 'MESH:D010673', (48, 73)) ('RET', 'Gene', (0, 3)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (57, 73)) ('associated', 'Reg', (32, 42)) ('mutations', 'Var', (4, 13)) 96797 29134959 As with RET rearrangements, the increasing use of NGS platforms to interrogate large collections of human tumour specimens has uncovered both classical and novel RET mutations in other cancers: RETC634R in a breast carcinoma, RETE511K in endometrial and Merkel-cell carcinomas, RETM918T in a paraganglioma and atypical lung carcinoid, and RETV804M in a colorectal carcinoma, meningioma, gastrointestinal stromal tumour (GIST), and hepatoma. ('lung carcinoid', 'Phenotype', 'HP:0030445', (319, 333)) ('hepatoma', 'Disease', 'MESH:D006528', (431, 439)) ('RETM918T', 'Var', (278, 286)) ('cancers', 'Phenotype', 'HP:0002664', (185, 192)) ('meningioma', 'Disease', (375, 385)) ('cancers', 'Disease', (185, 192)) ('RET', 'Gene', (162, 165)) ('meningioma', 'Phenotype', 'HP:0002858', (375, 385)) ('breast carcinoma', 'Disease', 'MESH:D001943', (208, 224)) ('mutations', 'Var', (166, 175)) ('endometrial', 'Disease', (238, 249)) ('cancer', 'Phenotype', 'HP:0002664', (185, 191)) ('paraganglioma', 'Phenotype', 'HP:0002668', (292, 305)) ('colorectal carcinoma', 'Disease', (353, 373)) ('RETC634R', 'Var', (194, 202)) ('carcinoma', 'Phenotype', 'HP:0030731', (215, 224)) ('lung carcinoid', 'Disease', 'MESH:D002276', (319, 333)) ('RETC634R', 'Mutation', 'rs75076352', (194, 202)) ('RETV804M', 'Var', (339, 347)) ('RETE511K', 'Var', (226, 234)) ('colorectal carcinoma', 'Disease', 'MESH:D015179', (353, 373)) ('carcinoma', 'Phenotype', 'HP:0030731', (364, 373)) ('meningioma', 'Disease', 'MESH:D008577', (375, 385)) ('tumour', 'Phenotype', 'HP:0002664', (106, 112)) ('gastrointestinal stromal tumour', 'Disease', (387, 418)) ('gastrointestinal stromal tumour', 'Disease', 'MESH:D046152', (387, 418)) ('gastrointestinal stromal tumour', 'Phenotype', 'HP:0100723', (387, 418)) ('tumour', 'Disease', 'MESH:D009369', (106, 112)) ('atypical lung carcinoid', 'Phenotype', 'HP:0030446', (310, 333)) ('hepatoma', 'Disease', (431, 439)) ('breast carcinoma', 'Phenotype', 'HP:0003002', (208, 224)) ('tumour', 'Disease', (106, 112)) ('cancers', 'Disease', 'MESH:D009369', (185, 192)) ('Merkel-cell carcinomas', 'Disease', 'MESH:D015266', (254, 276)) ('breast carcinoma', 'Disease', (208, 224)) ('Merkel-cell carcinomas', 'Disease', (254, 276)) ('paraganglioma', 'Disease', 'MESH:D010235', (292, 305)) ('tumour', 'Phenotype', 'HP:0002664', (412, 418)) ('human', 'Species', '9606', (100, 105)) ('carcinoid', 'Phenotype', 'HP:0100570', (324, 333)) ('RETM918T', 'Mutation', 'rs74799832', (278, 286)) ('tumour', 'Disease', 'MESH:D009369', (412, 418)) ('paraganglioma', 'Disease', (292, 305)) ('carcinoma', 'Phenotype', 'HP:0030731', (266, 275)) ('tumour', 'Disease', (412, 418)) ('carcinomas', 'Phenotype', 'HP:0030731', (266, 276)) ('lung carcinoid', 'Disease', (319, 333)) 96798 29134959 Considering that RET rearrangements and mutations are potentially actionable driver alterations in various cancers, we must be cognizant of the possible consequences of RET inhibition on nonmalignant tissues. ('cancers', 'Disease', (107, 114)) ('cancers', 'Disease', 'MESH:D009369', (107, 114)) ('cancer', 'Phenotype', 'HP:0002664', (107, 113)) ('mutations', 'Var', (40, 49)) ('cancers', 'Phenotype', 'HP:0002664', (107, 114)) 96799 29134959 In this respect, patients with inactivating germ-line and somatic RET mutations and preclinical Ret-knockout models have provided important clues as to the potential repercussions of decreased or absent RET activity during development and in adulthood (FIG. ('absent', 'NegReg', (196, 202)) ('mutations', 'Var', (70, 79)) ('activity', 'MPA', (207, 215)) ('RET', 'Gene', (66, 69)) ('patients', 'Species', '9606', (17, 25)) ('inactivating', 'Var', (31, 43)) 96801 29134959 RET mutations have been associated with up to half of cases of familial Hirschsprung disease (HSCR), and less commonly with congenital abnormalities of the kidney and urinary tract (CAKUT) and congenital central hypoventilation syndrome (CCHS). ('Hirschsprung disease', 'Phenotype', 'HP:0002251', (72, 92)) ('abnormalities of the kidney', 'Phenotype', 'HP:0000077', (135, 162)) ('hypoventilation', 'Phenotype', 'HP:0002791', (212, 227)) ('CCHS', 'Disease', (238, 242)) ('associated', 'Reg', (24, 34)) ('familial Hirschsprung disease', 'Disease', (63, 92)) ('congenital abnormalities of the kidney', 'Disease', (124, 162)) ('RET', 'Gene', (0, 3)) ('CCHS', 'Disease', 'MESH:C536209', (238, 242)) ('central hypoventilation', 'Phenotype', 'HP:0007110', (204, 227)) ('congenital central hypoventilation syndrome', 'Disease', (193, 236)) ('congenital abnormalities of the kidney', 'Disease', 'MESH:D007674', (124, 162)) ('mutations', 'Var', (4, 13)) ('congenital central hypoventilation syndrome', 'Disease', 'MESH:C536209', (193, 236)) ('familial Hirschsprung disease', 'Disease', 'MESH:D006627', (63, 92)) 96804 29134959 Interestingly, HSCR has been shown to co-segregate with MEN2A or FMTC because particular RET mutations exhibit a 'Janus effect', simultaneously causing decreased cell-surface expression of RET that negatively affects bowel neurons, and generating low-level constitutive RET-kinase activity that confers an increased risk of cancer. ('cancer', 'Disease', (324, 330)) ('mutations', 'Var', (93, 102)) ('constitutive RET-kinase activity', 'MPA', (257, 289)) ('RET', 'Gene', (89, 92)) ('affects', 'Reg', (209, 216)) ('cell-surface expression', 'MPA', (162, 185)) ('MEN2A', 'Gene', (56, 61)) ('cancer', 'Phenotype', 'HP:0002664', (324, 330)) ('MEN2A', 'Gene', '5979', (56, 61)) ('decreased', 'NegReg', (152, 161)) ('negatively', 'NegReg', (198, 208)) ("a 'Janus", 'Species', '176171', (111, 119)) ('bowel neurons', 'MPA', (217, 230)) ('cancer', 'Disease', 'MESH:D009369', (324, 330)) 96808 29134959 Compared to the established relationship between activating RET mutations and MEN2, the genotype-phenotype correlations between the type of presumed inactivating RET mutation and these clinical presentations (HSCR, CAKUT, CCHS, or a combination thereof) are less clear, and a wide variety RET mutations have been shown to occur at different exons across the length of the gene. ('mutation', 'Var', (166, 174)) ('CCHS', 'Disease', (222, 226)) ('CCHS', 'Disease', 'MESH:C536209', (222, 226)) 96809 29134959 Interpreting the findings of these studies in the context of the anticipated effects of RET inhibition in pediatric and adult patients is complicated by the fact that most of the knock-in and knock-out strategies used resulted in altered RET function during embryogenesis. ('RET function', 'MPA', (238, 250)) ('resulted', 'Reg', (218, 226)) ('patients', 'Species', '9606', (126, 134)) ('knock-in', 'Var', (179, 187)) ('altered', 'Reg', (230, 237)) 96813 29134959 In the second study, knockout of Ret in central nervous system nigrostriatal neurons (the same neurons that degenerate in Parkinson disease) led to their progressive loss, but only in aged (for example, 2-year-old) mice, and without any behavioural deficits indicative of Parkinson disease. ('Parkinson disease', 'Disease', 'MESH:D010300', (272, 289)) ('deficits indicative of Parkinson disease', 'Disease', (249, 289)) ('loss', 'NegReg', (166, 170)) ('knockout', 'Var', (21, 29)) ('deficits indicative of Parkinson disease', 'Disease', 'MESH:D010300', (249, 289)) ('Parkinson disease', 'Disease', (122, 139)) ('mice', 'Species', '10090', (215, 219)) ('Parkinson disease', 'Disease', 'MESH:D010300', (122, 139)) ('behavioural deficits', 'Phenotype', 'HP:0000708', (237, 257)) ('Ret', 'Gene', (33, 36)) 96814 29134959 More recently, in the third study of tissue-restricted Ret deletion, targeted ablation of Ret in a specific subpopulation of innate immune cells involved in mucosal immunity (group 3 innate lymphoid cells) did not impair Peyer's patch development, but resulted in a propensity towards chemical-irritant-induced gut inflammation and bacterial translocation or infection in post-natal animals. ('resulted in', 'Reg', (252, 263)) ('bacterial translocation or infection', 'Disease', 'MESH:D001424', (332, 368)) ('irritant-', 'Phenotype', 'HP:0000737', (294, 303)) ('ablation', 'Var', (78, 86)) ('Ret', 'Gene', (55, 58)) ('inflammation', 'Disease', 'MESH:D007249', (315, 327)) ('deletion', 'Var', (59, 67)) ('bacterial translocation or infection', 'Disease', (332, 368)) ('inflammation', 'Disease', (315, 327)) 96815 29134959 In summary, while the developmental loss of RET function leads to a variety of potentially severe phenotypes, selective Ret knockout in haematopoietic, neuronal, or lymphoid tissues causes tissue-specific histological changes in adult mice, albeit with relatively mild phenotypes and symptomatology in the absence of additional environmental insults. ('knockout', 'Var', (124, 132)) ('mice', 'Species', '10090', (235, 239)) ('loss', 'NegReg', (36, 40)) ('Ret', 'Gene', (120, 123)) 96820 29134959 To date, none of these drugs has been approved for a molecularly enriched cohort of patients with tumours harbouring an actionable alteration involving RET. ('tumours', 'Phenotype', 'HP:0002664', (98, 105)) ('tumour', 'Phenotype', 'HP:0002664', (98, 104)) ('patients', 'Species', '9606', (84, 92)) ('tumours', 'Disease', 'MESH:D009369', (98, 105)) ('tumours', 'Disease', (98, 105)) ('RET', 'Gene', (152, 155)) ('alteration', 'Var', (131, 141)) 96826 29134959 Many agents have demonstrated biological activity against cancer cells harbouring certain RET mutations, including cabozantinib, vandetanib, sorafenib, and alectinib in the RETC634W-mutant TT or the RETM918T-mutant MZ-CRC-1 human MTC cell lines or xenografts. ('cancer', 'Phenotype', 'HP:0002664', (58, 64)) ('RETM918T-mutant', 'Var', (199, 214)) ('mutations', 'Var', (94, 103)) ('vandetanib', 'Chemical', 'MESH:C452423', (129, 139)) ('sorafenib', 'Chemical', 'MESH:D000077157', (141, 150)) ('RETM918T', 'Mutation', 'rs74799832', (199, 207)) ('alectinib', 'Chemical', 'MESH:C582670', (156, 165)) ('cabozantinib', 'Chemical', 'MESH:C558660', (115, 127)) ('human', 'Species', '9606', (224, 229)) ('RETC634W-mutant', 'Var', (173, 188)) ('cancer', 'Disease', 'MESH:D009369', (58, 64)) ('cancer', 'Disease', (58, 64)) 96828 29134959 Fewer drugs have activity against the V804M/L gatekeeper mutations (FIG. ('V804M', 'SUBSTITUTION', 'None', (38, 43)) ('gatekeeper', 'Gene', (46, 56)) ('V804M', 'Var', (38, 43)) ('gatekeeper', 'Species', '111938', (46, 56)) 96830 29134959 Of the multikinase inhibitors that are currently being explored in the clinic, ponatinib, alectinib, sorafenib, and sunitinib have reported preclinical activity (of varying potencies) against cells harbouring RET V804M/L mutations. ('sorafenib', 'Chemical', 'MESH:D000077157', (101, 110)) ('RET', 'Gene', (209, 212)) ('alectinib', 'Chemical', 'MESH:C582670', (90, 99)) ('V804M', 'Var', (213, 218)) ('ponatinib', 'Chemical', 'MESH:C545373', (79, 88)) ('V804M', 'SUBSTITUTION', 'None', (213, 218)) ('sunitinib', 'Chemical', 'MESH:D000077210', (116, 125)) 96844 29134959 In both EXAM and ZETA, a positive association was observed between the presence of a RET mutation (and particularly RETM918T) and specific clinical outcomes: prolonged PFS with cabozantinib and vandetanib, and increased ORRs with vandetanib, compared with those of patients lacking RET mutations). ('RETM918T', 'Mutation', 'rs74799832', (116, 124)) ('RET', 'Gene', (85, 88)) ('increased', 'PosReg', (210, 219)) ('mutation', 'Var', (89, 97)) ('PFS', 'CPA', (168, 171)) ('vandetanib', 'Chemical', 'MESH:C452423', (230, 240)) ('ORRs', 'MPA', (220, 224)) ('presence', 'Var', (71, 79)) ('patients', 'Species', '9606', (265, 273)) ('cabozantinib', 'Chemical', 'MESH:C558660', (177, 189)) ('vandetanib', 'Chemical', 'MESH:C452423', (194, 204)) 96845 29134959 Results of an exploratory analysis of the EXAM trial indicate that cabozantinib provides the greatest PFS benefit over placebo in patients with RETM918T-mutant MTC. ('PFS', 'MPA', (102, 105)) ('RETM918T', 'Mutation', 'rs74799832', (144, 152)) ('patients', 'Species', '9606', (130, 138)) ('MTC', 'Gene', (160, 163)) ('cabozantinib', 'Chemical', 'MESH:C558660', (67, 79)) ('RETM918T-mutant', 'Var', (144, 159)) 96867 29134959 Unlike most other multikinase inhibitors, motesanib not only possesses 30-fold higher inhibitory activity against VEGFR2 than wild-type RET in enzymatic assays, but also has minimal activity against RET variants with M918 or C634 substitutions (FIG. ('motesanib', 'Chemical', 'MESH:C000625785', (42, 51)) ('inhibitory activity', 'MPA', (86, 105)) ('M918', 'Var', (217, 221)) ('VEGFR2', 'Gene', '3791', (114, 120)) ('VEGFR2', 'Gene', (114, 120)) ('higher', 'PosReg', (79, 85)) ('C634 substitutions', 'Var', (225, 243)) 96874 29134959 Preclinically, the presence of KIF5B upstream of RET results in a substantial increase in RET transcription, possibly increasing the amount of chimeric RET oncoprotein that needs to be overcome by tyrosine-kinase inhibition. ('increasing', 'PosReg', (118, 128)) ('tyrosine', 'Chemical', 'MESH:D014443', (197, 205)) ('KIF5B', 'Gene', (31, 36)) ('presence', 'Var', (19, 27)) ('increase', 'PosReg', (78, 86)) ('RET transcription', 'MPA', (90, 107)) ('KIF5B', 'Gene', '3799', (31, 36)) 96876 29134959 In patients with thyroid cancers harbouring non-gatekeeper RET mutations, the influence of mutation type on clinical response is less well characterized beyond RETM981T, the presence of which has been associated with an ORR of 34% with cabozantinib. ('mutations', 'Var', (63, 72)) ('thyroid cancers', 'Disease', (17, 32)) ('cancer', 'Phenotype', 'HP:0002664', (25, 31)) ('thyroid cancers', 'Disease', 'MESH:D013964', (17, 32)) ('RETM981T', 'Var', (160, 168)) ('patients', 'Species', '9606', (3, 11)) ('cancers', 'Phenotype', 'HP:0002664', (25, 32)) ('gatekeeper', 'Species', '111938', (48, 58)) ('cabozantinib', 'Chemical', 'MESH:C558660', (236, 248)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (17, 31)) 96877 29134959 RET mutations that confer resistance of RET-dependent tumours to multikinase inhibitors have been identified in preclinical models. ('tumours', 'Disease', 'MESH:D009369', (54, 61)) ('tumours', 'Disease', (54, 61)) ('RET', 'Gene', (0, 3)) ('mutations', 'Var', (4, 13)) ('tumour', 'Phenotype', 'HP:0002664', (54, 60)) ('tumours', 'Phenotype', 'HP:0002664', (54, 61)) 96878 29134959 Examples are the gatekeeper mutations RETV804M and RETV804L (REF. ('RETV804L', 'Var', (51, 59)) ('gatekeeper', 'Species', '111938', (17, 27)) ('RETV804M', 'Var', (38, 46)) 96882 29134959 In ALK-rearranged NSCLCs, the frequency of acquired ALK mutations is higher after treatment with more-potent second-generation (alectinib or ceritinib) versus first-generation (crizotinib) ALK inhibitors. ('ALK', 'Gene', '238', (3, 6)) ('NSCLCs', 'Disease', (18, 24)) ('mutations', 'Var', (56, 65)) ('ALK', 'Gene', '238', (189, 192)) ('crizotinib', 'Chemical', 'MESH:D000077547', (177, 187)) ('ceritinib', 'Chemical', 'MESH:C586847', (141, 150)) ('ALK', 'Gene', '238', (52, 55)) ('ALK', 'Gene', (3, 6)) ('alectinib', 'Chemical', 'MESH:C582670', (128, 137)) ('ALK', 'Gene', (189, 192)) ('NSCLCs', 'Disease', 'MESH:D002289', (18, 24)) ('ALK', 'Gene', (52, 55)) 96883 29134959 This finding suggest that the lack of clinical data on acquired RET mutations in RET-dependent tumours might be indicative of suboptimal RET inhibition with multikinase inhibitors. ('tumours', 'Phenotype', 'HP:0002664', (95, 102)) ('tumours', 'Disease', 'MESH:D009369', (95, 102)) ('RET', 'Gene', (64, 67)) ('tumours', 'Disease', (95, 102)) ('mutations', 'Var', (68, 77)) ('tumour', 'Phenotype', 'HP:0002664', (95, 101)) 96884 29134959 Corollary to this, these mutations may be more likely to emerge in tumour samples from patients who develop acquired resistance to more potent RET inhibitors. ('mutations', 'Var', (25, 34)) ('tumour', 'Disease', (67, 73)) ('emerge', 'Reg', (57, 63)) ('tumour', 'Phenotype', 'HP:0002664', (67, 73)) ('patients', 'Species', '9606', (87, 95)) ('tumour', 'Disease', 'MESH:D009369', (67, 73)) 96887 29134959 MAPK-pathway reactivation via the acquisition of KRAS or NRAS mutations has likewise been shown to engender resistance to multikinase inhibitors in RET-rearranged lung cancer cell lines. ('cancer', 'Phenotype', 'HP:0002664', (168, 174)) ('lung cancer', 'Disease', 'MESH:D008175', (163, 174)) ('KRAS', 'Gene', '3845', (49, 53)) ('KRAS', 'Gene', (49, 53)) ('NRAS', 'Gene', (57, 61)) ('MAPK-pathway', 'Pathway', (0, 12)) ('lung cancer', 'Phenotype', 'HP:0100526', (163, 174)) ('resistance to multikinase inhibitors', 'MPA', (108, 144)) ('engender', 'Reg', (99, 107)) ('lung cancer', 'Disease', (163, 174)) ('NRAS', 'Gene', '4893', (57, 61)) ('mutations', 'Var', (62, 71)) ('reactivation', 'Reg', (13, 25)) 96889 29134959 MDM2 is also concurrently amplified in a substantial number of patients with RET-rearranged NSCLC; thus, MDM2 amplification potentially underlies both intrinsic and acquired resistance to multikinase inhibition. ('MDM2', 'Gene', '4193', (105, 109)) ('MDM2', 'Gene', (105, 109)) ('amplification', 'Var', (110, 123)) ('underlies', 'Reg', (136, 145)) ('MDM2', 'Gene', '4193', (0, 4)) ('MDM2', 'Gene', (0, 4)) ('NSCLC', 'Disease', (92, 97)) ('patients', 'Species', '9606', (63, 71)) ('NSCLC', 'Disease', 'MESH:D002289', (92, 97)) 96893 29134959 Moreover, combined mTOR inhibition has been postulated to enhance the entry of vandetanib into the CNS. ('enhance', 'PosReg', (58, 65)) ('entry of vandetanib into the CNS', 'MPA', (70, 102)) ('mTOR', 'Gene', '2475', (19, 23)) ('vandetanib', 'Chemical', 'MESH:C452423', (79, 89)) ('mTOR', 'Gene', (19, 23)) ('inhibition', 'Var', (24, 34)) 96897 29134959 ), have broad preclinical activity against various RET rearrangements and RET mutations, including RETV804M/L gatekeeper mutations. ('gatekeeper', 'Species', '111938', (110, 120)) ('RET rearrangements', 'Disease', (51, 69)) ('RET', 'Gene', (74, 77)) ('mutations', 'Var', (78, 87)) 96900 29134959 Activating RET mutations and RET rearrangements drive the pathogenesis of several cancers, notably thyroid and lung carcinomas. ('lung carcinomas', 'Disease', 'MESH:D008175', (111, 126)) ('Activating', 'PosReg', (0, 10)) ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('RET', 'Gene', (29, 32)) ('drive', 'Reg', (48, 53)) ('cancers', 'Phenotype', 'HP:0002664', (82, 89)) ('mutations', 'Var', (15, 24)) ('RET', 'Gene', (11, 14)) ('cancers', 'Disease', (82, 89)) ('rearrangements', 'Var', (33, 47)) ('cancers', 'Disease', 'MESH:D009369', (82, 89)) ('lung carcinomas', 'Disease', (111, 126)) ('carcinoma', 'Phenotype', 'HP:0030731', (116, 125)) ('carcinomas', 'Phenotype', 'HP:0030731', (116, 126)) ('thyroid', 'Disease', (99, 106)) 96901 29134959 Inhibition of RET can abrogate the growth of various cell lines and tumour xenografts that harbour these alterations. ('tumour', 'Phenotype', 'HP:0002664', (68, 74)) ('growth of', 'CPA', (35, 44)) ('tumour', 'Disease', 'MESH:D009369', (68, 74)) ('abrogate', 'NegReg', (22, 30)) ('tumour', 'Disease', (68, 74)) ('alterations', 'Var', (105, 116)) ('RET', 'Protein', (14, 17)) ('Inhibition', 'Var', (0, 10)) 96905 29134959 In parallel with these efforts, combination therapies are being explored in tumours harbouring RET mutations or rearrangements to boost the activity observed with existing agents in the clinic. ('tumours', 'Disease', 'MESH:D009369', (76, 83)) ('RET', 'Gene', (95, 98)) ('activity', 'MPA', (140, 148)) ('tumours', 'Disease', (76, 83)) ('tumour', 'Phenotype', 'HP:0002664', (76, 82)) ('boost', 'PosReg', (130, 135)) ('mutations', 'Var', (99, 108)) ('rearrangements', 'Var', (112, 126)) ('tumours', 'Phenotype', 'HP:0002664', (76, 83)) 96906 29134959 Activating alterations of the RET kinase are therapeutically actionable oncogenic drivers across a variety of cancers; in-frame RET rearrangements occur in subsets of non-small-cell lung and papillary thyroid cancers, and germ-line or somatic RET mutations are enriched in medullary thyroid cancers Confirmed and durable responses to multikinase inhibitors with activity against RET can be achieved in a proportion of patients with RET-rearranged or RET-mutant cancers; however, objective response rates are modest The outcomes observed with RET-directed therapy in RET-rearranged or RET-mutant cancers might be explained, in part, by the limitations of multikinase inhibitors, with inhibition of other kinases resulting in 'off-target' toxicities that preclude optimal dosing Novel approaches to RET-directed targeted therapy are currently being explored; potent and specific RET inhibitors with minimal preclinical off-target activity are being evaluated in early stage clinical trials, as are combination therapies Salient to the clinical development of potent RET inhibitors for patients of all ages, selective RET inactivation can affect the nervous, genitourinary, gastrointestinal, and haematopoietic systems during early development, but in adulthood, leads to mild phenotypes ('cancers', 'Disease', 'MESH:D009369', (595, 602)) ('patients', 'Species', '9606', (418, 426)) ('papillary thyroid cancers', 'Disease', 'MESH:D000077273', (191, 216)) ('cancer', 'Phenotype', 'HP:0002664', (461, 467)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (283, 297)) ('cancers', 'Disease', 'MESH:D009369', (209, 216)) ('papillary thyroid cancers', 'Disease', (191, 216)) ('cancer', 'Phenotype', 'HP:0002664', (595, 601)) ('cancers', 'Disease', 'MESH:D009369', (291, 298)) ('thyroid cancers', 'Disease', (283, 298)) ('thyroid cancers', 'Disease', 'MESH:D013964', (201, 216)) ('cancers', 'Phenotype', 'HP:0002664', (110, 117)) ('selective', 'Var', (1105, 1114)) ('cancers', 'Disease', 'MESH:D009369', (461, 468)) ('cancers', 'Phenotype', 'HP:0002664', (461, 468)) ('cancers', 'Disease', (461, 468)) ('cancers', 'Disease', (110, 117)) ('toxicities', 'Disease', 'MESH:D064420', (737, 747)) ('cancers', 'Phenotype', 'HP:0002664', (595, 602)) ('inactivation', 'NegReg', (1119, 1131)) ('cancers', 'Disease', (595, 602)) ('affect', 'Reg', (1136, 1142)) ('patients', 'Species', '9606', (1083, 1091)) ('cancer', 'Phenotype', 'HP:0002664', (110, 116)) ('toxicities', 'Disease', (737, 747)) ('cancer', 'Phenotype', 'HP:0002664', (291, 297)) ('RET', 'Gene', (1115, 1118)) ('cancers', 'Phenotype', 'HP:0002664', (291, 298)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (201, 215)) ('cancers', 'Phenotype', 'HP:0002664', (209, 216)) ('cancers', 'Disease', (291, 298)) ('papillary thyroid cancers', 'Phenotype', 'HP:0002895', (191, 216)) ('cancers', 'Disease', (209, 216)) ('medullary thyroid cancers', 'Phenotype', 'HP:0002865', (273, 298)) ('thyroid cancers', 'Disease', 'MESH:D013964', (283, 298)) ('cancers', 'Disease', 'MESH:D009369', (110, 117)) ('cancer', 'Phenotype', 'HP:0002664', (209, 215)) 96933 31437624 TARGET datasets include large-scale genomic data including gene-expression, copy number variation, epigenetics, along with annotated clinical information for a selected set of pediatric cancers (https://ocg.cancer.gov/programs/target/data-matrix). ('cancer', 'Disease', 'MESH:D009369', (207, 213)) ('cancers', 'Disease', 'MESH:D009369', (186, 193)) ('cancers', 'Phenotype', 'HP:0002664', (186, 193)) ('cancer', 'Disease', (207, 213)) ('cancer', 'Phenotype', 'HP:0002664', (186, 192)) ('cancers', 'Disease', (186, 193)) ('cancer', 'Phenotype', 'HP:0002664', (207, 213)) ('copy number variation', 'Var', (76, 97)) ('cancer', 'Disease', (186, 192)) ('cancer', 'Disease', 'MESH:D009369', (186, 192)) 96964 31437624 Using 39 pedigrees, researchers were able to determine that the most common cause of LFS is inherited mutations in the tumor suppressor gene TP53. ('tumor', 'Disease', (119, 124)) ('TP53', 'Gene', '7157', (141, 145)) ('LFS', 'Disease', 'MESH:D016864', (85, 88)) ('TP53', 'Gene', (141, 145)) ('mutations', 'Var', (102, 111)) ('tumor', 'Disease', 'MESH:D009369', (119, 124)) ('cause', 'Reg', (76, 81)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('LFS', 'Disease', (85, 88)) 96984 31437624 analyzed the mutation landscape of 12 major cancer types and found that TP53 and PIK3CA were the most commonly mutated genes, ARID1A were frequently mutated in bladder urothelial carcinoma (BLCA), uterine corpus endometrial carcinoma (UCEC), lung adenocarcinoma (LUAD) and lung squamous cell carcinoma (LUSC), and EGFR were frequently mutated in GBM and LUAD. ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (278, 301)) ('mutated', 'Var', (149, 156)) ('PIK3CA', 'Gene', '5290', (81, 87)) ('lung adenocarcinoma', 'Disease', (242, 261)) ('endometrial carcinoma', 'Phenotype', 'HP:0012114', (212, 233)) ('bladder urothelial carcinoma', 'Disease', (160, 188)) ('LUAD', 'Phenotype', 'HP:0030078', (263, 267)) ('EGFR', 'Gene', (314, 318)) ('endometrial carcinoma', 'Disease', 'MESH:D016889', (212, 233)) ('lung squamous cell carcinoma', 'Disease', 'MESH:D002294', (273, 301)) ('TP53', 'Gene', '7157', (72, 76)) ('lung squamous cell carcinoma', 'Disease', (273, 301)) ('bladder urothelial carcinoma', 'Disease', 'MESH:D001749', (160, 188)) ('cancer', 'Disease', 'MESH:D009369', (44, 50)) ('GBM', 'Phenotype', 'HP:0012174', (346, 349)) ('lung adenocarcinoma', 'Disease', 'MESH:D000077192', (242, 261)) ('carcinoma', 'Phenotype', 'HP:0030731', (292, 301)) ('lung adenocarcinoma', 'Phenotype', 'HP:0030078', (242, 261)) ('PIK3CA', 'Gene', (81, 87)) ('LUAD', 'Phenotype', 'HP:0030078', (354, 358)) ('ARID1A', 'Gene', (126, 132)) ('carcinoma', 'Phenotype', 'HP:0030731', (252, 261)) ('EGFR', 'Gene', '1956', (314, 318)) ('carcinoma', 'Phenotype', 'HP:0030731', (179, 188)) ('ARID1A', 'Gene', '8289', (126, 132)) ('endometrial carcinoma', 'Disease', (212, 233)) ('cancer', 'Disease', (44, 50)) ('USC', 'Phenotype', 'HP:0002891', (304, 307)) ('TP53', 'Gene', (72, 76)) ('carcinoma', 'Phenotype', 'HP:0030731', (224, 233)) ('cancer', 'Phenotype', 'HP:0002664', (44, 50)) 96985 31437624 In contrast, VHL and PBRM1 mutations were exclusive to kidney renal clear cell carcinoma (KIRC), and NPM1 and FLT3 mutations were exclusive to AML. ('mutations', 'Var', (27, 36)) ('FLT3', 'Gene', (110, 114)) ('NPM1', 'Gene', '4869', (101, 105)) ('kidney renal clear cell carcinoma', 'Disease', (55, 88)) ('kidney renal clear cell carcinoma', 'Disease', 'MESH:C538614', (55, 88)) ('FLT3', 'Gene', '2322', (110, 114)) ('PBRM1', 'Gene', (21, 26)) ('VHL', 'Gene', (13, 16)) ('PBRM1', 'Gene', '55193', (21, 26)) ('AML', 'Disease', 'MESH:D015470', (143, 146)) ('VHL', 'Gene', '7428', (13, 16)) ('carcinoma', 'Phenotype', 'HP:0030731', (79, 88)) ('AML', 'Disease', (143, 146)) ('NPM1', 'Gene', (101, 105)) ('AML', 'Phenotype', 'HP:0004808', (143, 146)) 96986 31437624 Numerous pan-cancer analyses have been performed, including pan-cancer analyses of copy number alteration, enhancer expression, oncogenic signaling pathways, and transcriptional metabolic dysregulation. ('copy number alteration', 'Var', (83, 105)) ('cancer', 'Phenotype', 'HP:0002664', (13, 19)) ('enhancer', 'PosReg', (107, 115)) ('cancer', 'Disease', (64, 70)) ('cancer', 'Disease', 'MESH:D009369', (64, 70)) ('cancer', 'Disease', (13, 19)) ('cancer', 'Disease', 'MESH:D009369', (13, 19)) ('cancer', 'Phenotype', 'HP:0002664', (64, 70)) 96996 31437624 To illustrate the integrative clustering analysis, we analyzed 241 sarcoma tumor samples from the TCGA SARC study that had somatic mutation, copy number, methylation and mRNA expression data using the recently developed iClusterBayes software. ('sarcoma tumor', 'Disease', 'MESH:D012509', (67, 80)) ('sarcoma tumor', 'Disease', (67, 80)) ('sarcoma', 'Phenotype', 'HP:0100242', (67, 74)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('copy', 'Var', (141, 145)) ('SARC', 'Phenotype', 'HP:0100242', (103, 107)) ('mRNA expression', 'MPA', (170, 185)) 97026 32412940 Increasing numbers of individuals and family members in whom germline mutations for one of the known PPGL susceptibility genes have been detected are now also being routinely screened for PPGL, thus also impacting detected incidence. ('PPGL', 'Chemical', '-', (101, 105)) ('PPGL', 'Gene', (101, 105)) ('PPGL', 'Disease', (188, 192)) ('detected incidence', 'MPA', (214, 232)) ('impacting', 'NegReg', (204, 213)) ('germline mutations', 'Var', (61, 79)) ('PPGL', 'Chemical', '-', (188, 192)) 97039 32412940 Rarely, patients with a PPGL present with low blood pressure or even with circulatory shock that may occasionally precede a multisystem crisis. ('shock', 'Phenotype', 'HP:0031273', (86, 91)) ('shock', 'Disease', (86, 91)) ('low blood pressure', 'Phenotype', 'HP:0002615', (42, 60)) ('PPGL', 'Chemical', '-', (24, 28)) ('PPGL', 'Var', (24, 28)) ('shock', 'Disease', 'MESH:D012769', (86, 91)) ('patients', 'Species', '9606', (8, 16)) 97047 32412940 Patients with PPGL are characterized not only by a higher frequency of palpitations but also by a higher heart rate as compared with patients without PPGL. ('heart rate', 'MPA', (105, 115)) ('palpitations', 'MPA', (71, 83)) ('patients', 'Species', '9606', (133, 141)) ('palpitations', 'Phenotype', 'HP:0001962', (71, 83)) ('PPGL', 'Chemical', '-', (150, 154)) ('Patients', 'Species', '9606', (0, 8)) ('higher', 'PosReg', (98, 104)) ('higher heart rate', 'Phenotype', 'HP:0001649', (98, 115)) ('PPGL', 'Chemical', '-', (14, 18)) ('PPGL', 'Var', (14, 18)) 97049 32412940 Moreover PPGL patients are more often characterized by lower BMI compared to those without PPGL. ('PPGL', 'Chemical', '-', (9, 13)) ('PPGL', 'Var', (9, 13)) ('lower BMI', 'Phenotype', 'HP:0045082', (55, 64)) ('PPGL', 'Chemical', '-', (91, 95)) ('lower', 'NegReg', (55, 60)) ('BMI', 'MPA', (61, 64)) ('patients', 'Species', '9606', (14, 22)) 97057 32412940 This is also justified by the finding that hypertension among patients with adrenal incidentalomas is not more frequent in patients with PPGL than in those without PPGL. ('hypertension', 'Disease', 'MESH:D006973', (43, 55)) ('hypertension', 'Disease', (43, 55)) ('PPGL', 'Chemical', '-', (137, 141)) ('hypertension', 'Phenotype', 'HP:0000822', (43, 55)) ('patients', 'Species', '9606', (123, 131)) ('PPGL', 'Var', (137, 141)) ('adrenal incidentalomas', 'Disease', (76, 98)) ('adrenal incidentalomas', 'Disease', 'MESH:C538238', (76, 98)) ('PPGL', 'Chemical', '-', (164, 168)) ('patients', 'Species', '9606', (62, 70)) 97068 32412940 Inclusion of 3-methoxytyramine is useful for detecting dopamine-producing PPGLs when measured in plasma but not urine. ('dopamine-producing', 'MPA', (55, 73)) ('dopamine', 'Chemical', 'MESH:D004298', (55, 63)) ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (13, 30)) ('detecting', 'Reg', (45, 54)) ('PPGLs', 'Chemical', '-', (74, 79)) ('PPGLs', 'Var', (74, 79)) 97087 32412940 In patients with PPGLs due to mutations of RET, NF1 and related genes involved in kinase signalling the focus should be on both metanephrine and normetanephrine since almost always the first and invariably both metabolites are elevated. ('PPGLs', 'Disease', (17, 22)) ('NF1', 'Gene', '4763', (48, 51)) ('RET', 'Gene', (43, 46)) ('due', 'Reg', (23, 26)) ('metanephrine', 'Chemical', 'MESH:D008676', (128, 140)) ('metanephrine', 'Chemical', 'MESH:D008676', (148, 160)) ('patients', 'Species', '9606', (3, 11)) ('mutations', 'Var', (30, 39)) ('PPGLs', 'Chemical', '-', (17, 22)) ('RET', 'Gene', '5979', (43, 46)) ('NF1', 'Gene', (48, 51)) ('normetanephrine', 'Chemical', 'MESH:D009647', (145, 160)) ('elevated', 'PosReg', (227, 235)) 97088 32412940 In contrast, for mutations of genes that result of stabilisation of hypoxia-inducible factors and epigenetic silencing of phenylethanolamine N-methyltransferase, the enzyme that converts noradrenaline into adrenaline (e.g., mutations of VHL and SDHx genes) the focus should be on normetanephrine since these tumours do not produce adrenaline. ('hypoxia', 'Disease', 'MESH:D000860', (68, 75)) ('VHL', 'Gene', '7428', (237, 240)) ('adrenaline', 'Chemical', 'MESH:D004837', (331, 341)) ('mutations', 'Var', (17, 26)) ('normetanephrine', 'Chemical', 'MESH:D009647', (280, 295)) ('SDH', 'Gene', '6390', (245, 248)) ('noradrenaline', 'Chemical', 'MESH:D009638', (187, 200)) ('tumours', 'Disease', (308, 315)) ('adrenaline', 'Chemical', 'MESH:D004837', (190, 200)) ('SDH', 'Gene', (245, 248)) ('epigenetic silencing', 'Var', (98, 118)) ('tumours', 'Phenotype', 'HP:0002664', (308, 315)) ('adrenaline', 'Chemical', 'MESH:D004837', (206, 216)) ('hypoxia', 'Disease', (68, 75)) ('tumours', 'Disease', 'MESH:D009369', (308, 315)) ('VHL', 'Gene', (237, 240)) ('mutations', 'Var', (224, 233)) ('tumour', 'Phenotype', 'HP:0002664', (308, 314)) ('phenylethanolamine N-methyltransferase', 'Gene', '5409', (122, 160)) ('phenylethanolamine N-methyltransferase', 'Gene', (122, 160)) 97089 32412940 For patients with SDHx mutations or in whom there is the possibility of metastatic disease plasma measurements should include 3-methoxytyramine. ('SDH', 'Gene', '6390', (18, 21)) ('3-methoxytyramine', 'Chemical', 'MESH:C001746', (126, 143)) ('3-methoxytyramine', 'MPA', (126, 143)) ('mutations', 'Var', (23, 32)) ('SDH', 'Gene', (18, 21)) ('patients', 'Species', '9606', (4, 12)) 97110 32412940 Functional imaging is also recommended for excluding metastatic disease particularly in large phaeochromocytomas (>5.0 cm) and in patients with SDHA/B/D mutations. ('metastatic disease', 'Disease', (53, 71)) ('SDHA', 'Gene', (144, 148)) ('phaeochromocytomas', 'Disease', 'MESH:D010673', (94, 112)) ('mutations', 'Var', (153, 162)) ('patients', 'Species', '9606', (130, 138)) ('phaeochromocytomas', 'Disease', (94, 112)) ('SDHA', 'Gene', '6389', (144, 148)) 97112 32412940 In a first study in six patients with a MAX mutation, it is suggested that the use of 18F-FDOPA is preferred over 68Ga-DOTA-SSA due to better tumour-to-adrenal uptake ratio (Table 3).. ('tumour', 'Disease', (142, 148)) ('mutation', 'Var', (44, 52)) ('68Ga-DOTA-SSA', 'Chemical', '-', (114, 127)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (86, 95)) ('tumour', 'Phenotype', 'HP:0002664', (142, 148)) ('better', 'PosReg', (135, 141)) ('patients', 'Species', '9606', (24, 32)) ('tumour', 'Disease', 'MESH:D009369', (142, 148)) 97114 32412940 For the same reason, CT is preferred over MRI due to spatial resolution, especially for patients without contraindications for the use of ionizing radiations such as patients with germline mutation in a PPGL susceptibility gene. ('patients', 'Species', '9606', (88, 96)) ('PPGL', 'Chemical', '-', (203, 207)) ('PPGL', 'Gene', (203, 207)) ('germline mutation', 'Var', (180, 197)) ('patients', 'Species', '9606', (166, 174)) 97118 32412940 In patients with confirmed or suspected SDH mutation, 68Ga-DOTA-SSA is the imaging modality of choice. ('ice', 'Chemical', 'MESH:D007053', (98, 101)) ('mutation', 'Var', (44, 52)) ('68Ga-DOTA-SSA', 'Chemical', '-', (54, 67)) ('patients', 'Species', '9606', (3, 11)) ('SDH', 'Gene', '6390', (40, 43)) ('SDH', 'Gene', (40, 43)) 97119 32412940 When PPGL is caused by VHL or HIF2A mutations, 18F-FDOPA appears to be superior to 68Ga-DOTA-SSA. ('PPGL', 'Disease', (5, 9)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (47, 56)) ('VHL', 'Gene', (23, 26)) ('HIF2A', 'Gene', '2034', (30, 35)) ('PPGL', 'Chemical', '-', (5, 9)) ('HIF2A', 'Gene', (30, 35)) ('mutations', 'Var', (36, 45)) ('VHL', 'Gene', '7428', (23, 26)) ('68Ga-DOTA-SSA', 'Chemical', '-', (83, 96)) ('caused', 'Reg', (13, 19)) 97132 32412940 Although genetic testing has traditionally been performed on DNA acquired from blood or buccal swabs, recent data suggest a potential benefit of PPGL mutational screening on tumour DNA (conveniently selected by a pathologist in order to avoid excessive contamination with normal tissue). ('tumour', 'Phenotype', 'HP:0002664', (174, 180)) ('mutational screening', 'Var', (150, 170)) ('PPGL', 'Chemical', '-', (145, 149)) ('tumour', 'Disease', 'MESH:D009369', (174, 180)) ('PPGL', 'Gene', (145, 149)) ('tumour', 'Disease', (174, 180)) 97134 32412940 This not only enables discrimination of inherited from sporadic disease but also allows for targeted germline testing, and as detailed later, the available tumour material can also help to determine the pathogenicity of variants of unknown significance. ('variants', 'Var', (220, 228)) ('tumour', 'Disease', (156, 162)) ('sporadic disease', 'Disease', 'MESH:D003141', (55, 71)) ('sporadic disease', 'Disease', (55, 71)) ('tumour', 'Phenotype', 'HP:0002664', (156, 162)) ('tumour', 'Disease', 'MESH:D009369', (156, 162)) 97136 32412940 This mainly reflects the low penetrance of some gene mutations such as those of SDHA and to inheritance models modified by imprinting or other mechanisms, which result in generation-skipping of clinical manifestations of the disease for a specific gene. ('SDHA', 'Gene', (80, 84)) ('SDHA', 'Gene', '6389', (80, 84)) ('mutations', 'Var', (53, 62)) 97138 32412940 Although pediatric cases usually involve germline mutations, for those presenting with a single tumour more than 20% are explained by somatic mutations. ('tumour', 'Disease', 'MESH:D009369', (96, 102)) ('germline mutations', 'Var', (41, 59)) ('tumour', 'Phenotype', 'HP:0002664', (96, 102)) ('tumour', 'Disease', (96, 102)) 97141 32412940 Although all PPGLs and all genotypes have a potential for developing metastatic disease, mutations in the SDHB gene are associated with the highest risk of metastatic disease (30-70%). ('associated', 'Reg', (120, 130)) ('metastatic disease', 'Disease', (156, 174)) ('PPGLs', 'Chemical', '-', (13, 18)) ('SDHB', 'Gene', '6390', (106, 110)) ('developing metastatic disease', 'CPA', (58, 87)) ('mutations', 'Var', (89, 98)) ('SDHB', 'Gene', (106, 110)) 97146 32412940 Such variants may require functional analyses, complementary tests performed in tumour material and checks for the presence of the variant in an appropriate control population. ('tumour', 'Disease', (80, 86)) ('tumour', 'Phenotype', 'HP:0002664', (80, 86)) ('tumour', 'Disease', 'MESH:D009369', (80, 86)) ('variants', 'Var', (5, 13)) 97148 32412940 For instance, a pathogenic variant in SDHB is characterized by loss of SDHB protein expression in the tumour on immunohistochemical analysis, elevated tumour tissue succinate and a noradrenergic biochemical profile. ('tumour', 'Phenotype', 'HP:0002664', (102, 108)) ('SDHB', 'Gene', '6390', (71, 75)) ('tumour', 'Disease', 'MESH:D009369', (102, 108)) ('tumour', 'Disease', (102, 108)) ('SDHB', 'Gene', '6390', (38, 42)) ('SDHB', 'Gene', (71, 75)) ('succinate', 'Chemical', 'MESH:D019802', (165, 174)) ('SDHB', 'Gene', (38, 42)) ('expression', 'MPA', (84, 94)) ('elevated', 'PosReg', (142, 150)) ('loss', 'NegReg', (63, 67)) ('tumour', 'Phenotype', 'HP:0002664', (151, 157)) ('elevated tumour tissue succinate', 'Phenotype', 'HP:0020149', (142, 174)) ('pathogenic', 'Reg', (16, 26)) ('noradrenergic biochemical profile', 'MPA', (181, 214)) ('protein', 'Protein', (76, 83)) ('tumour', 'Disease', 'MESH:D009369', (151, 157)) ('tumour', 'Disease', (151, 157)) ('variant', 'Var', (27, 34)) 97149 32412940 In patients in whom no mutation is found, whether further suspicion of an underlying germline mutation is warranted should take into account specific characteristics of the patient or tumour, such as loss of SDHB immunohistochemistry or abnormal metabolite profiles. ('SDHB', 'Gene', '6390', (208, 212)) ('patient', 'Species', '9606', (3, 10)) ('abnormal metabolite profiles', 'Phenotype', 'HP:0032180', (237, 265)) ('tumour', 'Phenotype', 'HP:0002664', (184, 190)) ('SDHB', 'Gene', (208, 212)) ('loss', 'Var', (200, 204)) ('patients', 'Species', '9606', (3, 11)) ('tumour', 'Disease', 'MESH:D009369', (184, 190)) ('patient', 'Species', '9606', (173, 180)) ('tumour', 'Disease', (184, 190)) 97150 32412940 Nevertheless, a proportion of patients or tumours remain genetically unclassified; these provide candidates for identifying mutations in new tumour-susceptibility genes. ('mutations', 'Var', (124, 133)) ('tumour', 'Phenotype', 'HP:0002664', (42, 48)) ('tumour', 'Phenotype', 'HP:0002664', (141, 147)) ('tumours', 'Phenotype', 'HP:0002664', (42, 49)) ('tumour', 'Disease', 'MESH:D009369', (42, 48)) ('patients', 'Species', '9606', (30, 38)) ('tumour', 'Disease', 'MESH:D009369', (141, 147)) ('tumour', 'Disease', (42, 48)) ('tumour', 'Disease', (141, 147)) ('tumours', 'Disease', 'MESH:D009369', (42, 49)) ('tumours', 'Disease', (42, 49)) 97154 32412940 In addition, the rapid drop in catecholamines after resection of the PPGL may result in severe hypotension. ('resection', 'Var', (52, 61)) ('hypotension', 'Disease', 'MESH:D007022', (95, 106)) ('hypotension', 'Phenotype', 'HP:0002615', (95, 106)) ('rapid drop in catecholamines', 'Phenotype', 'HP:0003334', (17, 45)) ('result in', 'Reg', (78, 87)) ('PPGL', 'Chemical', '-', (69, 73)) ('hypotension', 'Disease', (95, 106)) ('catecholamines', 'MPA', (31, 45)) ('PPGL', 'Gene', (69, 73)) ('drop', 'NegReg', (23, 27)) ('catecholamines', 'Chemical', 'MESH:D002395', (31, 45)) 97160 32412940 It was found, however, that phenoxybenzamine was associated with more hemodynamic stability during surgery. ('phenoxybenzamine', 'Var', (28, 44)) ('more', 'PosReg', (65, 69)) ('hemodynamic', 'MPA', (70, 81)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (28, 44)) 97161 32412940 It should be noted that normotensive patients with a PPGL with normal or elevated levels of catecholamines or metanephrines may also be at increased risk of intraoperative hemodynamic instability and should therefore receive presurgical alpha-blockade as well. ('patients', 'Species', '9606', (37, 45)) ('catecholamines', 'Chemical', 'MESH:D002395', (92, 106)) ('levels of catecholamines or metanephrines', 'MPA', (82, 123)) ('PPGL', 'Chemical', '-', (53, 57)) ('PPGL', 'Var', (53, 57)) ('elevated levels of catecholamines', 'Phenotype', 'HP:0003334', (73, 106)) ('metanephrines', 'Chemical', 'MESH:D008676', (110, 123)) 97165 32412940 The drug metyrosine (alpha-methyl-paratyrosine) inhibits tyrosine hydroxylase, the enzyme catalyzing the rate limiting step in catecholamine biosynthesis. ('metyrosine', 'Var', (9, 19)) ('tyrosine', 'Chemical', 'MESH:D014443', (38, 46)) ('catecholamine', 'Chemical', 'MESH:D002395', (127, 140)) ('tyrosine', 'Chemical', 'MESH:D014443', (11, 19)) ('inhibits', 'NegReg', (48, 56)) ('metyrosine', 'Chemical', 'MESH:D019805', (9, 19)) ('tyrosine', 'Chemical', 'MESH:D014443', (57, 65)) ('tyrosine hydroxylase', 'MPA', (57, 77)) ('alpha-methyl-paratyrosine', 'Chemical', 'MESH:D019805', (21, 46)) 97176 32412940 Minimally invasive adrenalectomy is associated with lower blood loss and shorter postoperative length of stay compared to open adrenalectomy. ('lower blood loss', 'Disease', 'MESH:D006473', (52, 68)) ('lower blood loss', 'Disease', (52, 68)) ('Minimally', 'Var', (0, 9)) 97202 32412940 Patients with large tumours, paragangliomas, a childhood presentation, multifocal disease or SDHB mutations have a high risk for metastatic progression (. ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) ('metastatic progression', 'CPA', (129, 151)) ('SDHB', 'Gene', (93, 97)) ('paragangliomas', 'Phenotype', 'HP:0002668', (29, 43)) ('mutations', 'Var', (98, 107)) ('Patients', 'Species', '9606', (0, 8)) ('paragangliomas', 'Disease', (29, 43)) ('paragangliomas', 'Disease', 'MESH:D010235', (29, 43)) ('tumours', 'Phenotype', 'HP:0002664', (20, 27)) ('multifocal disease', 'Disease', (71, 89)) ('multifocal disease', 'Disease', 'MESH:D000080364', (71, 89)) ('tumours', 'Disease', 'MESH:D009369', (20, 27)) ('SDHB', 'Gene', '6390', (93, 97)) ('tumours', 'Disease', (20, 27)) ('tumour', 'Phenotype', 'HP:0002664', (20, 26)) 97206 32412940 In patients with SDHx mutations, imaging should also be performed to search for non-functional paragangliomas, including HNPGLs. ('HNPGLs', 'Disease', (121, 127)) ('paraganglioma', 'Phenotype', 'HP:0002668', (95, 108)) ('SDH', 'Gene', (17, 20)) ('paragangliomas', 'Phenotype', 'HP:0002668', (95, 109)) ('paragangliomas', 'Disease', 'MESH:D010235', (95, 109)) ('patients', 'Species', '9606', (3, 11)) ('mutations', 'Var', (22, 31)) ('paragangliomas', 'Disease', (95, 109)) ('SDH', 'Gene', '6390', (17, 20)) 97209 32412940 About half of patients with metastatic disease harbour PPGL susceptibility genes mutations, most frequently SDHB, and 50-70% will be considered as apparently sporadic. ('SDHB', 'Gene', (108, 112)) ('metastatic disease', 'Disease', (28, 46)) ('mutations', 'Var', (81, 90)) ('PPGL', 'Gene', (55, 59)) ('SDHB', 'Gene', '6390', (108, 112)) ('patients', 'Species', '9606', (14, 22)) ('PPGL', 'Chemical', '-', (55, 59)) 97214 32412940 Although the development of metastatic PPGL cannot be predicted by a magic circulating biomarker, the presence of SDHA/C/B/D, FH, MDH2, SLC25A11 and HIF2A gene mutations, large tumour size (> 5 cm) or multifocality, a noradrenergic and/or dopaminergic biochemical phenotype, or previously detected metastatic lesions (even surgically cured), are risk factors tightly linked to higher incidence of future metastases. ('MDH2', 'Gene', '4191', (130, 134)) ('tumour', 'Disease', 'MESH:D009369', (177, 183)) ('MDH2', 'Gene', (130, 134)) ('HIF2A', 'Gene', (149, 154)) ('tumour', 'Disease', (177, 183)) ('mutations', 'Var', (160, 169)) ('HIF2A', 'Gene', '2034', (149, 154)) ('PPGL', 'Chemical', '-', (39, 43)) ('SDHA/C/B/D', 'Gene', '6389;2652', (114, 124)) ('metastases', 'Disease', (404, 414)) ('SLC25A11', 'Gene', '8402', (136, 144)) ('presence', 'Var', (102, 110)) ('metastases', 'Disease', 'MESH:D009362', (404, 414)) ('tumour', 'Phenotype', 'HP:0002664', (177, 183)) ('SLC25A11', 'Gene', (136, 144)) ('dopamine', 'Chemical', 'MESH:D004298', (239, 247)) ('SDHA/C/B/D', 'Gene', (114, 124)) 97223 32412940 Classic CVD (cyclophosphamide, vincristine, dacarbazine) chemotherapy may be effective, especially in patients harbouring SDHx gene mutations: up to 70% of patient will respond compared to 30% with apparently sporadic PPGL. ('Classic CVD', 'Disease', 'MESH:D020240', (0, 11)) ('SDH', 'Gene', (122, 125)) ('patient', 'Species', '9606', (102, 109)) ('patients', 'Species', '9606', (102, 110)) ('mutations', 'Var', (132, 141)) ('dacarbazine', 'Chemical', 'MESH:D003606', (44, 55)) ('PPGL', 'Chemical', '-', (218, 222)) ('vincristine', 'Chemical', 'MESH:D014750', (31, 42)) ('Classic CVD', 'Disease', (0, 11)) ('cyclophosphamide', 'Chemical', 'MESH:D003520', (13, 29)) ('SDH', 'Gene', '6390', (122, 125)) ('patient', 'Species', '9606', (156, 163)) 97225 32412940 For moderately progressive metastatic disease, radiotherapeutic approaches should be considered; these include 177Lu-DOTATATE (Lutathera) and 131I-MIBG, the latter either high-specific-activity 131I-MIBG (Azedra) or conventional 131I-MIBG. ('131I-MIBG', 'Var', (194, 203)) ('MIBG', 'Chemical', 'MESH:D019797', (147, 151)) ('MIBG', 'Chemical', 'MESH:D019797', (234, 238)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (111, 125)) ('MIBG', 'Chemical', 'MESH:D019797', (199, 203)) ('Lutathera', 'Chemical', 'MESH:C447941', (127, 136)) ('Azedra', 'Chemical', 'MESH:D019797', (205, 211)) ('131I-MIBG', 'Var', (142, 151)) 97232 32412940 These include the ATRX and SDHB mutations as well as telomerase activation or TERT structural rearrangement. ('TERT', 'Gene', (78, 82)) ('TERT', 'Gene', '7015', (78, 82)) ('ATRX', 'Gene', (18, 22)) ('mutations', 'Var', (32, 41)) ('SDHB', 'Gene', '6390', (27, 31)) ('activation', 'PosReg', (64, 74)) ('ATRX', 'Gene', '546', (18, 22)) ('telomerase', 'Protein', (53, 63)) ('SDHB', 'Gene', (27, 31)) 97289 32110238 We considered that her vertigo was related to the lesion that invade the promontory of the tympanum and thus affected the inner ear. ('vertigo', 'Phenotype', 'HP:0002321', (23, 30)) ('vertigo', 'Disease', (23, 30)) ('vertigo', 'Disease', 'MESH:D014717', (23, 30)) ('lesion', 'Var', (50, 56)) ('affected', 'Reg', (109, 117)) 97381 31083609 As higher cardiovascular mortality has been reported in PPGL subjects, increased BPV might be a contributor for enhanced cardiovascular morbidity and mortality in this rare disease, besides the known risk factors, such as hypertension, arrhythmias, and altered glucose metabolism. ('enhanced', 'PosReg', (112, 120)) ('PPGL', 'Var', (56, 60)) ('arrhythmias', 'Disease', 'MESH:D001145', (236, 247)) ('arrhythmias', 'Disease', (236, 247)) ('BPV', 'MPA', (81, 84)) ('hypertension', 'Disease', 'MESH:D006973', (222, 234)) ('cardiovascular morbidity', 'Phenotype', 'HP:0001626', (121, 145)) ('PGL', 'Phenotype', 'HP:0002668', (57, 60)) ('hypertension', 'Phenotype', 'HP:0000822', (222, 234)) ('cardiovascular mortality', 'CPA', (10, 34)) ('hypertension', 'Disease', (222, 234)) ('arrhythmias', 'Phenotype', 'HP:0011675', (236, 247)) ('altered glucose metabolism', 'Disease', 'MESH:D044882', (253, 279)) ('higher', 'PosReg', (3, 9)) ('increased BPV', 'Phenotype', 'HP:0032263', (71, 84)) ('altered glucose metabolism', 'Disease', (253, 279)) ('BPV', 'Chemical', '-', (81, 84)) ('PPGL', 'Chemical', '-', (56, 60)) 97390 31083609 Germline mutations were found in eight patients (34.8%) (Table 1); the most common gene involved was VHL, mutated in three brothers affected by von Hipple-Lindau syndrome. ('patients', 'Species', '9606', (39, 47)) ('VHL', 'Disease', 'MESH:D006623', (101, 104)) ('von Hipple-Lindau syndrome', 'Disease', 'MESH:D006623', (144, 170)) ('VHL', 'Disease', (101, 104)) ('von Hipple-Lindau syndrome', 'Disease', (144, 170)) ('mutated', 'Var', (106, 113)) 97391 31083609 We also found two patients with a diagnosis of neurofibromatosis type 1 and mutation of the NF1 gene. ('neurofibromatosis type 1', 'Gene', '4763', (47, 71)) ('neurofibromatosis type 1', 'Gene', (47, 71)) ('NF1', 'Gene', (92, 95)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (47, 64)) ('NF1', 'Gene', '4763', (92, 95)) ('patients', 'Species', '9606', (18, 26)) ('mutation', 'Var', (76, 84)) 97392 31083609 In two sisters we observed a RET gene mutation associated with a diagnosis of multiple endocrine neoplasia syndrome (MEN) type 2A. ('RET', 'Gene', (29, 32)) ('associated with', 'Reg', (47, 62)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (87, 106)) ('multiple endocrine neoplasia syndrome', 'Disease', 'MESH:D009377', (78, 115)) ('neoplasia', 'Phenotype', 'HP:0002664', (97, 106)) ('MEN', 'Species', '9606', (117, 120)) ('mutation', 'Var', (38, 46)) ('RET', 'Gene', '5979', (29, 32)) ('multiple endocrine neoplasia syndrome', 'Disease', (78, 115)) 97394 31083609 In only one female, we discovered an SDHD gene mutation. ('mutation', 'Var', (47, 55)) ('SDHD', 'Gene', (37, 41)) ('SDHD', 'Gene', '6392', (37, 41)) 97417 31083609 Arterial hypertension is a consequence of PPGL in up to 80-90% of patients and it may contribute to the development and worsening of the cardiovascular profile, as well as metabolic derangements (i.e. ('PPGL', 'Chemical', '-', (42, 46)) ('hypertension', 'Disease', (9, 21)) ('metabolic', 'MPA', (172, 181)) ('PGL', 'Phenotype', 'HP:0002668', (43, 46)) ('hypertension', 'Phenotype', 'HP:0000822', (9, 21)) ('metabolic derangements', 'Phenotype', 'HP:0001939', (172, 194)) ('hypertension', 'Disease', 'MESH:D006973', (9, 21)) ('contribute', 'Reg', (86, 96)) ('PPGL', 'Var', (42, 46)) ('patients', 'Species', '9606', (66, 74)) 97420 31083609 In physiological conditions, the short-, mid-, and long-term BPV variations have been shown to represent an adaptive mechanism to maintain homeostasis. ('variations', 'Var', (65, 75)) ('BPV', 'Chemical', '-', (61, 64)) ('homeostasis', 'MPA', (139, 150)) ('BPV', 'Gene', (61, 64)) 97436 31083609 Moreover, despite PPGLs are considered to be a curable cause of hypertension, in the long-term a substantial proportion of patients without recurrence could show higher than suggested nocturnal BP values and/or continue taking antihypertensive agents for BP control. ('higher', 'PosReg', (162, 168)) ('PGL', 'Phenotype', 'HP:0002668', (19, 22)) ('hypertension', 'Disease', (64, 76)) ('hypertension', 'Phenotype', 'HP:0000822', (64, 76)) ('patients', 'Species', '9606', (123, 131)) ('hypertensive', 'Disease', 'MESH:D006973', (231, 243)) ('PPGLs', 'Chemical', '-', (18, 23)) ('PPGLs', 'Var', (18, 23)) ('hypertensive', 'Disease', (231, 243)) ('hypertension', 'Disease', 'MESH:D006973', (64, 76)) 97444 31083609 These changes might represent, besides well-established and independent risk factors (i.e., hypertension, arrhythmias, and disturbances of glucose metabolism), an additional issue for cardiovascular morbidity and mortality in this rare condition. ('disturbances of glucose metabolism', 'Disease', 'MESH:D044882', (123, 157)) ('hypertension', 'Disease', (92, 104)) ('hypertension', 'Phenotype', 'HP:0000822', (92, 104)) ('cardiovascular morbidity', 'Phenotype', 'HP:0001626', (184, 208)) ('changes', 'Var', (6, 13)) ('arrhythmias', 'Disease', 'MESH:D001145', (106, 117)) ('disturbances of glucose metabolism', 'Disease', (123, 157)) ('arrhythmias', 'Disease', (106, 117)) ('arrhythmias', 'Phenotype', 'HP:0011675', (106, 117)) ('hypertension', 'Disease', 'MESH:D006973', (92, 104)) 97486 31092265 We now report a patient with a SDHB mutation, c.166_170del (p.Pro56Tyrfs*5) who developed renal cell carcinomas with characteristic morphological features of SDH-deficient renal cell carcinoma but had positive SDHB immunostaining. ('developed', 'PosReg', (80, 89)) ('p.Pro56Tyrfs*5', 'FRAMESHIFT', 'None', (60, 74)) ('SDHB', 'Gene', '6390', (31, 35)) ('patient', 'Species', '9606', (16, 23)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (90, 110)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (172, 192)) ('carcinoma', 'Phenotype', 'HP:0030731', (183, 192)) ('SDH-deficient renal cell carcinoma', 'Disease', (158, 192)) ('SDHB', 'Gene', '6390', (210, 214)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (90, 111)) ('SDHB', 'Gene', (31, 35)) ('carcinoma', 'Phenotype', 'HP:0030731', (101, 110)) ('renal cell carcinomas', 'Disease', (90, 111)) ('c.166_170del', 'Var', (46, 58)) ('SDHB', 'Gene', (210, 214)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (90, 111)) ('c.166_170del', 'Mutation', 'c.166_170del', (46, 58)) ('carcinomas', 'Phenotype', 'HP:0030731', (101, 111)) ('SDH-deficient renal cell carcinoma', 'Disease', 'MESH:C538614', (158, 192)) ('p.Pro56Tyrfs*5', 'Var', (60, 74)) 97490 31092265 We now report a case of two SDHB-positive RCC associated to a germline SDHB mutation. ('RCC', 'Disease', 'MESH:C538614', (42, 45)) ('SDHB', 'Gene', '6390', (71, 75)) ('RCC', 'Disease', (42, 45)) ('SDHB', 'Gene', '6390', (28, 32)) ('SDHB', 'Gene', (71, 75)) ('associated', 'Reg', (46, 56)) ('mutation', 'Var', (76, 84)) ('SDHB', 'Gene', (28, 32)) 97491 31092265 Interestingly, SDHB immunohistochemistry showed a diffuse granular cytoplasmic positivity (mitochondrial pattern) in tumor cells, thus not fulfilling the 2016 WHO diagnostic criteria for SDH-deficient RCC, despite the characteristic morphological features and the association with a germline pathogenic SDHB mutation. ('SDHB', 'Gene', (303, 307)) ('SDHB', 'Gene', '6390', (15, 19)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('SDH-deficient RCC', 'Disease', (187, 204)) ('mutation', 'Var', (308, 316)) ('tumor', 'Disease', (117, 122)) ('SDH-deficient RCC', 'Disease', 'MESH:C538614', (187, 204)) ('SDHB', 'Gene', (15, 19)) ('SDHB', 'Gene', '6390', (303, 307)) ('tumor', 'Disease', 'MESH:D009369', (117, 122)) 97499 31092265 However, the genetic analysis (see Additional file 1) disclosed a pathogenic deletion in exon 2 of the SDHB gene, c.166_170del (p.Pro56Tyrfs*5), which had been previously described. ('SDHB', 'Gene', (103, 107)) ('c.166_170del', 'Mutation', 'c.166_170del', (114, 126)) ('p.Pro56Tyrfs*5', 'Var', (128, 142)) ('c.166_170del', 'Var', (114, 126)) ('SDHB', 'Gene', '6390', (103, 107)) ('p.Pro56Tyrfs*5', 'FRAMESHIFT', 'None', (128, 142)) ('pathogenic', 'Reg', (66, 76)) 97511 31092265 The novel term SDH-deficient RCC should allow the correct classification of tumors with a specific pathogenesis, usually occurring in the context of hereditary conditions, and characteristic histological features, that, for the lack of a common term, had been previously assigned very different names in routine clinical practice and in the literature, as reflected in the 2009 description of the association of renal oncocytoma with SDHB mutations. ('SDH-deficient RCC', 'Disease', (15, 32)) ('SDHB', 'Gene', '6390', (434, 438)) ('SDHB', 'Gene', (434, 438)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('SDH-deficient RCC', 'Disease', 'MESH:C538614', (15, 32)) ('renal oncocytoma', 'Disease', 'MESH:C537750', (412, 428)) ('tumors', 'Disease', (76, 82)) ('tumors', 'Disease', 'MESH:D009369', (76, 82)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) ('association', 'Interaction', (397, 408)) ('renal oncocytoma', 'Disease', (412, 428)) ('mutations', 'Var', (439, 448)) ('renal oncocytoma', 'Phenotype', 'HP:0011798', (412, 428)) 97513 31092265 In fact, these authors concluded that "SDHB mutations should also be considered in the context of genetic testing when renal tumors, regardless of histopathology, present in families with other tumors consistent hereditary paraganglioma syndrome". ('SDHB', 'Gene', '6390', (39, 43)) ('tumors consistent hereditary paraganglioma syndrome', 'Disease', 'MESH:D009386', (194, 245)) ('renal tumors', 'Disease', 'MESH:D007674', (119, 131)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('paraganglioma', 'Phenotype', 'HP:0002668', (223, 236)) ('tumor', 'Phenotype', 'HP:0002664', (194, 199)) ('tumors', 'Phenotype', 'HP:0002664', (125, 131)) ('SDHB', 'Gene', (39, 43)) ('renal tumors', 'Disease', (119, 131)) ('mutations', 'Var', (44, 53)) ('tumors', 'Phenotype', 'HP:0002664', (194, 200)) ('renal tumors', 'Phenotype', 'HP:0009726', (119, 131)) 97516 31092265 The added risk of RCC in patients with SDHB mutations was first described in 2008, when familial RCC was reported, even in the absence of a personal or family history of pheochromocytoma or head and neck paraganglioma, the most characteristics tumors associated to SDHB mutations, that cause pheochromocytoma/paraganglioma syndrome type 4 (PGL4). ('familial RCC', 'Disease', 'MESH:C538614', (88, 100)) ('SDHB', 'Gene', (265, 269)) ('SDHB', 'Gene', '6390', (39, 43)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (292, 308)) ('paraganglioma', 'Phenotype', 'HP:0002668', (309, 322)) ('neck paraganglioma', 'Disease', (199, 217)) ('cause', 'Reg', (286, 291)) ('pheochromocytoma', 'Disease', (292, 308)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (309, 331)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (292, 308)) ('tumor', 'Phenotype', 'HP:0002664', (244, 249)) ('familial RCC', 'Disease', (88, 100)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (190, 217)) ('mutations', 'Var', (270, 279)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (170, 186)) ('SDHB', 'Gene', (39, 43)) ('PGL4', 'Gene', (340, 344)) ('tumors', 'Phenotype', 'HP:0002664', (244, 250)) ('PGL4', 'Gene', '6390', (340, 344)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (199, 217)) ('paraganglioma', 'Phenotype', 'HP:0002668', (204, 217)) ('RCC', 'Disease', (18, 21)) ('RCC', 'Disease', (97, 100)) ('pheochromocytoma', 'Disease', (170, 186)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (170, 186)) ('tumors', 'Disease', (244, 250)) ('patients', 'Species', '9606', (25, 33)) ('RCC', 'Disease', 'MESH:C538614', (18, 21)) ('SDHB', 'Gene', '6390', (265, 269)) ('RCC', 'Disease', 'MESH:C538614', (97, 100)) ('tumors', 'Disease', 'MESH:D009369', (244, 250)) ('mutations', 'Var', (44, 53)) ('paraganglioma syndrome', 'Disease', (309, 331)) 97517 31092265 However, it was not until 2011 that the specific morphological features were reported and both the morphology and negative immunohistochemistry for SDHB in tumor cells proposed to allow the identification of kindreds with germline SDHB mutations. ('SDHB', 'Gene', (148, 152)) ('SDHB', 'Gene', '6390', (231, 235)) ('SDHB', 'Gene', (231, 235)) ('tumor', 'Disease', 'MESH:D009369', (156, 161)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('mutations', 'Var', (236, 245)) ('tumor', 'Disease', (156, 161)) ('SDHB', 'Gene', '6390', (148, 152)) 97522 31092265 Whether it also questions the need for homozygous SDHB deficiency for the pathogenesis of associated RCC may be discussed, since the molecular explanation for SDHB positivity in the tumor may theoretically be an acquired inactivating mutation in the wild-type SDHB allele that causes dysfunction but allows the complex to form (Fig. ('SDHB', 'Gene', '6390', (159, 163)) ('causes', 'Reg', (277, 283)) ('SDHB deficiency', 'Disease', (50, 65)) ('tumor', 'Disease', (182, 187)) ('SDHB', 'Gene', (50, 54)) ('SDHB', 'Gene', (159, 163)) ('positivity', 'Var', (164, 174)) ('RCC', 'Disease', (101, 104)) ('RCC', 'Disease', 'MESH:C538614', (101, 104)) ('SDHB', 'Gene', '6390', (260, 264)) ('SDHB deficiency', 'Disease', 'MESH:D007153', (50, 65)) ('inactivating mutation', 'Var', (221, 242)) ('tumor', 'Disease', 'MESH:D009369', (182, 187)) ('SDHB', 'Gene', (260, 264)) ('dysfunction', 'MPA', (284, 295)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) ('SDHB', 'Gene', '6390', (50, 54)) 97523 31092265 As an alternative interpretation, a mutation may have resulted in expression of a dysfunctional SDHB subunit protein somehow rendered more stable as a monomer, rather than participating in assembly of an intact complex. ('stable', 'MPA', (139, 145)) ('resulted in', 'Reg', (54, 65)) ('more', 'PosReg', (134, 138)) ('expression', 'MPA', (66, 76)) ('SDHB', 'Gene', '6390', (96, 100)) ('SDHB', 'Gene', (96, 100)) ('mutation', 'Var', (36, 44)) 97529 31092265 In this regard, rare cases of SDH-deficient RCC have also been associated with SDHA mutations (also with loss of SDHA expression by immunohistochemistry) and SDHC mutations have been reported. ('SDHC', 'Gene', (158, 162)) ('SDHA', 'Gene', (79, 83)) ('associated', 'Reg', (63, 73)) ('SDHA', 'Gene', '6389', (113, 117)) ('SDHC', 'Gene', '6391', (158, 162)) ('mutations', 'Var', (84, 93)) ('SDH-deficient RCC', 'Disease', (30, 47)) ('SDH-deficient RCC', 'Disease', 'MESH:C538614', (30, 47)) ('SDHA', 'Gene', (113, 117)) ('SDHA', 'Gene', '6389', (79, 83)) 97531 31092265 Thus, GIST, paraganglioma and pheochoromocytoma and the literature suggesting SDHD mutation in paraganglioma may be prone to difficult to interpret staining (diffuse blush negative may appear positive, like case 2 in this report). ('paraganglioma', 'Phenotype', 'HP:0002668', (12, 25)) ('paraganglioma', 'Phenotype', 'HP:0002668', (95, 108)) ('paraganglioma', 'Disease', (95, 108)) ('paraganglioma', 'Disease', (12, 25)) ('paraganglioma and pheochoromocytoma', 'Disease', 'MESH:D010235', (12, 47)) ('SDHD', 'Gene', '6392', (78, 82)) ('SDHD', 'Gene', (78, 82)) ('mutation', 'Var', (83, 91)) ('paraganglioma', 'Disease', 'MESH:D010235', (12, 25)) ('paraganglioma', 'Disease', 'MESH:D010235', (95, 108)) ('blush negative', 'Phenotype', 'HP:0001041', (166, 180)) 97684 29269645 Recent advances in understanding the genetics of pheochromocytoma have revealed that approximately 40% of pheochromocytomas carry a germline mutation in one of the 15 genes that have been identified, which include Neurofibromin 1 (NF1), ret proto-oncogene (RET), von Hippel-Lindau tumor suppressor (VHL), succinate dehydrogenase complex subunit A/BC/D (SDHA/B/C/D), transmembrane protein 127 (TMEM127) and MYC-associated factor X (MAX). ('SDH', 'Gene', (353, 356)) ('NF1', 'Gene', (231, 234)) ('RET', 'Gene', (257, 260)) ('MAX', 'Gene', (431, 434)) ('Neurofibromin 1', 'Gene', '4763', (214, 229)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (106, 123)) ('MYC-associated factor X', 'Gene', '4149', (406, 429)) ('VHL', 'Gene', (299, 302)) ('von Hippel-Lindau tumor suppressor', 'Gene', '7428', (263, 297)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (106, 122)) ('VHL', 'Gene', '7428', (299, 302)) ('TMEM127', 'Gene', (393, 400)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (49, 65)) ('pheochromocytoma', 'Disease', (106, 122)) ('MAX', 'Gene', '4149', (431, 434)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (106, 122)) ('tumor', 'Phenotype', 'HP:0002664', (281, 286)) ('pheochromocytoma', 'Disease', (49, 65)) ('RET', 'Gene', '5979', (257, 260)) ('SDH', 'Gene', '6390', (353, 356)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (49, 65)) ('pheochromocytomas', 'Disease', (106, 123)) ('Neurofibromin 1', 'Gene', (214, 229)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (106, 123)) ('TMEM127', 'Gene', '55654', (393, 400)) ('von Hippel-Lindau tumor suppressor', 'Gene', (263, 297)) ('ret', 'Gene', (237, 240)) ('NF1', 'Gene', '4763', (231, 234)) ('ret', 'Gene', '5979', (237, 240)) ('MYC-associated factor X', 'Gene', (406, 429)) ('mutation', 'Var', (141, 149)) 97698 29269645 To verify our diagnosis and obtain further supportive information, we preoperatively screened for germline mutations in genes known to be associated with pheochromocytomas using a targeted gene panel. ('pheochromocytomas', 'Disease', (154, 171)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (154, 171)) ('mutations', 'Var', (107, 116)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (154, 171)) ('associated', 'Reg', (138, 148)) ('screened', 'Reg', (85, 93)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (154, 170)) 97723 29269645 Pheochromocytomas are classified into two clusters depending on the molecular signatures associated with the driver mutations: pseudohypoxia-related tumors (cluster 1 represented by VHL, SDH and HIF2A mutations) and kinase-driven tumors (cluster 2 represented by RET, NF1, TMEM127 and MAX). ('HIF2A', 'Gene', '2034', (195, 200)) ('MAX', 'Gene', '4149', (285, 288)) ('tumors', 'Phenotype', 'HP:0002664', (230, 236)) ('tumors', 'Phenotype', 'HP:0002664', (149, 155)) ('HIF2A', 'Gene', (195, 200)) ('VHL', 'Gene', '7428', (182, 185)) ('TMEM127', 'Gene', '55654', (273, 280)) ('RET', 'Gene', '5979', (263, 266)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (0, 17)) ('NF1', 'Gene', '4763', (268, 271)) ('tumors', 'Disease', (230, 236)) ('tumor', 'Phenotype', 'HP:0002664', (149, 154)) ('tumors', 'Disease', (149, 155)) ('NF1', 'Gene', (268, 271)) ('MAX', 'Gene', (285, 288)) ('RET', 'Gene', (263, 266)) ('hypoxia', 'Disease', (133, 140)) ('tumors', 'Disease', 'MESH:D009369', (230, 236)) ('SDH', 'Gene', '6390', (187, 190)) ('Pheochromocytomas', 'Disease', (0, 17)) ('mutations', 'Var', (116, 125)) ('tumors', 'Disease', 'MESH:D009369', (149, 155)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('mutations', 'Var', (201, 210)) ('SDH', 'Gene', (187, 190)) ('hypoxia', 'Disease', 'MESH:D000860', (133, 140)) ('VHL', 'Gene', (182, 185)) ('TMEM127', 'Gene', (273, 280)) ('tumor', 'Phenotype', 'HP:0002664', (230, 235)) 97724 29269645 Intriguingly, cluster 2 gene mutations are also known to eventually activate HIF through multiple signaling pathways, including mTORC1 and MYC, suggesting that the known pheochromocytoma mutations lead to HIF activation, irrespective of the clusters. ('pheochromocytoma', 'Disease', (170, 186)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (170, 186)) ('MYC', 'Gene', '4609', (139, 142)) ('mutations', 'Var', (29, 38)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (170, 186)) ('mutations', 'Var', (187, 196)) ('MYC', 'Gene', (139, 142)) ('activation', 'PosReg', (209, 219)) ('mTORC1', 'Gene', '382056', (128, 134)) ('mTORC1', 'Gene', (128, 134)) 97725 29269645 In contrast to this, mounting evidence suggests that HIF1 activation protects against neurodegenerative diseases, including Parkinson's disease, Alzheimer's disease, and Huntington's disease, and dysfunction of genes involved in monogenic Parkinson's disease may potentially inactivate HIF signaling. ("Parkinson's disease", 'Disease', 'MESH:D010300', (124, 143)) ('neurodegenerative diseases', 'Disease', (86, 112)) ('neurodegenerative diseases', 'Phenotype', 'HP:0002180', (86, 112)) ('dysfunction', 'Var', (196, 207)) ('HIF1', 'Gene', (53, 57)) ("Parkinson's disease", 'Disease', (239, 258)) ("Parkinson's disease", 'Disease', (124, 143)) ("Alzheimer's disease", 'Disease', 'MESH:D000544', (145, 164)) ("Alzheimer's disease", 'Phenotype', 'HP:0002511', (145, 164)) ("Alzheimer's disease", 'Disease', (145, 164)) ("Parkinson's disease", 'Disease', 'MESH:D010300', (239, 258)) ('neurodegenerative diseases', 'Disease', 'MESH:D019636', (86, 112)) ('inactivate', 'NegReg', (275, 285)) ("Huntington's disease", 'Disease', (170, 190)) ('HIF1', 'Gene', '3091', (53, 57)) ("Huntington's disease", 'Disease', 'MESH:D006816', (170, 190)) ('HIF signaling', 'MPA', (286, 299)) 97731 29269645 Our literature survey also supported this finding: Ablation of RET was reported to cause mitochondrial deficit, resulting in dopaminergic neurodegeneration by exhibiting crosstalk with parkin, while gain-of-function of RET leads to pheochromocytoma. ('neurodegeneration', 'Disease', (138, 155)) ('RET', 'Gene', '5979', (63, 66)) ('neurodegeneration', 'Disease', 'MESH:D019636', (138, 155)) ('RET', 'Gene', '5979', (219, 222)) ('pheochromocytoma', 'Disease', (232, 248)) ('Ablation', 'Var', (51, 59)) ('mitochondrial deficit', 'MPA', (89, 110)) ('dopamine', 'Chemical', 'MESH:D004298', (125, 133)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (232, 248)) ('gain-of-function', 'PosReg', (199, 215)) ('parkin', 'Protein', (185, 191)) ('RET', 'Gene', (219, 222)) ('RET', 'Gene', (63, 66)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (232, 248)) ('mitochondrial deficit', 'Phenotype', 'HP:0003287', (89, 110)) ('crosstalk', 'Reg', (170, 179)) ('neurodegeneration', 'Phenotype', 'HP:0002180', (138, 155)) 97744 29264540 Radiological Surveillance Screening in Asymptomatic Succinate Dehydrogenase Mutation Carriers There has been a significant increase in the availability of testing for pheochromocytoma and paraganglioma (PPGL) germline susceptibility genes. ('Succinate Dehydrogenase', 'Gene', (52, 75)) ('PGL', 'Phenotype', 'HP:0002668', (204, 207)) ('paraganglioma', 'Phenotype', 'HP:0002668', (188, 201)) ('Succinate Dehydrogenase', 'Gene', '6390', (52, 75)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (167, 201)) ('increase', 'PosReg', (123, 131)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (167, 183)) ('PPGL', 'Gene', (203, 207)) ('Mutation', 'Var', (76, 84)) 97746 29264540 This review focuses on carriers of succinate dehydrogenase (SDH) mutations. ('SDH', 'Gene', (60, 63)) ('succinate dehydrogenase', 'Gene', (35, 58)) ('succinate dehydrogenase', 'Gene', '6390', (35, 58)) ('SDH', 'Gene', '6390', (60, 63)) ('mutations', 'Var', (65, 74)) 97748 29264540 For SDHx mutations, this should equate to a surveillance program that is safe and removes as much uncertainty around diagnosis as possible. ('SDHx', 'Gene', (4, 8)) ('mutations', 'Var', (9, 18)) ('SDHx', 'Chemical', '-', (4, 8)) 97750 29264540 We review the current literature on surveillance protocols for asymptomatic individuals that harbor SDHx mutations. ('mutations', 'Var', (105, 114)) ('SDHx', 'Gene', (100, 104)) ('SDHx', 'Chemical', '-', (100, 104)) 97753 29264540 This review focuses on these carriers of succinate dehydrogenase (SDH) mutations. ('SDH', 'Gene', '6390', (66, 69)) ('succinate dehydrogenase', 'Gene', '6390', (41, 64)) ('succinate dehydrogenase', 'Gene', (41, 64)) ('SDH', 'Gene', (66, 69)) ('mutations', 'Var', (71, 80)) 97766 29264540 We review the current literature with relevance to SDHx mutations, discussing the risks of the radiation burden from some imaging protocols and debating the advantages and disadvantages of magnetic resonance imaging (MRI)- vs computed tomography (CT)-based imaging. ('mutations', 'Var', (56, 65)) ('SDHx', 'Chemical', '-', (51, 55)) ('SDHx', 'Gene', (51, 55)) 97768 29264540 One of the first studies to look at surveillance in SDHx carriers included 38 asymptomatic carriers of SDHB or SDHD mutations. ('SDHB', 'Gene', (103, 107)) ('mutations', 'Var', (116, 125)) ('SDHD', 'Gene', '6392', (111, 115)) ('SDHx', 'Chemical', '-', (52, 56)) ('SDHB', 'Gene', '6390', (103, 107)) ('SDHD', 'Gene', (111, 115)) 97769 29264540 On first surveillance screening, they found 4 out of 33 individuals with SDHB mutations had disease (two extra-adrenal PGLs and two head and neck PGLs [HNPGLs]), but they did not publish longer-term outcomes. ('PGL', 'Phenotype', 'HP:0002668', (154, 157)) ('PGL', 'Phenotype', 'HP:0002668', (119, 122)) ('extra-adrenal PGLs', 'Disease', (105, 123)) ('mutations', 'Var', (78, 87)) ('disease', 'Disease', (92, 99)) ('SDHB', 'Gene', '6390', (73, 77)) ('PGL', 'Phenotype', 'HP:0002668', (146, 149)) ('SDHB', 'Gene', (73, 77)) ('had', 'Reg', (88, 91)) 97772 29264540 looked specifically at a cohort of asymptomatic carriers with SDHx mutations and found that on first surveillance imaging, 28 of the 47 asymptomatic SDHD mutation carriers had HNPGLs, but only 2 out of 17 SDHB mutation carriers had a PGL, supporting the difference in penetrance in the different SDH subunits. ('SDH', 'Gene', '6390', (296, 299)) ('SDH', 'Gene', '6390', (62, 65)) ('SDHD', 'Gene', '6392', (149, 153)) ('HNPGLs', 'MPA', (176, 182)) ('SDHB', 'Gene', (205, 209)) ('SDH', 'Gene', '6390', (149, 152)) ('SDHD', 'Gene', (149, 153)) ('SDH', 'Gene', (62, 65)) ('SDH', 'Gene', (296, 299)) ('mutation', 'Var', (154, 162)) ('PGL', 'Phenotype', 'HP:0002668', (234, 237)) ('mutations', 'Var', (67, 76)) ('SDH', 'Gene', '6390', (205, 208)) ('PGL', 'Phenotype', 'HP:0002668', (178, 181)) ('SDH', 'Gene', (149, 152)) ('SDHx', 'Chemical', '-', (62, 66)) ('SDH', 'Gene', (205, 208)) ('SDHB', 'Gene', '6390', (205, 209)) 97773 29264540 In a later review analyzing these previous studies, Neumann and Eng suggested individuals carrying SDHx mutations should be followed up clinically on an annual basis and additionally undergo serial imaging with MRI of the complete autonomic nervous system (skull base to pelvis), with consideration of preoperative metaiodobenzylguanidine (MIBG) or dihydroxyphenylalanine-PET functional imaging. ('metaiodobenzylguanidine', 'Chemical', 'MESH:D019797', (315, 338)) ('mutations', 'Var', (104, 113)) ('SDHx', 'Gene', (99, 103)) ('SDHx', 'Chemical', '-', (99, 103)) ('dihydroxyphenylalanine', 'Chemical', 'MESH:D004295', (349, 371)) ('MIBG', 'Chemical', 'MESH:D019797', (340, 344)) 97774 29264540 A recent review of hereditary HNPGLs highlights that mutations in SDHD are currently the leading cause of hereditary HNPGLs (>50%), followed by SDHB (20% to 35%) and SDHC (15%). ('hereditary HNPGLs', 'Disease', 'MESH:D009386', (19, 36)) ('SDHD', 'Gene', '6392', (66, 70)) ('hereditary HNPGLs', 'Disease', (106, 123)) ('PGL', 'Phenotype', 'HP:0002668', (119, 122)) ('hereditary HNPGLs', 'Disease', 'MESH:D009386', (106, 123)) ('hereditary HNPGLs', 'Disease', (19, 36)) ('mutations', 'Var', (53, 62)) ('SDHB', 'Gene', '6390', (144, 148)) ('SDHC', 'Gene', (166, 170)) ('SDHC', 'Gene', '6391', (166, 170)) ('cause', 'Reg', (97, 102)) ('SDHB', 'Gene', (144, 148)) ('PGL', 'Phenotype', 'HP:0002668', (32, 35)) ('SDHD', 'Gene', (66, 70)) 97775 29264540 They highlight that the optimal follow-up algorithm has not yet been validated in hereditary HNPGLs but recommend annual clinical and biochemical assessments of SDHx mutations carriers with head and neck MRI at three yearly intervals. ('PGL', 'Phenotype', 'HP:0002668', (95, 98)) ('mutations', 'Var', (166, 175)) ('SDHx', 'Gene', (161, 165)) ('SDHx', 'Chemical', '-', (161, 165)) ('hereditary HNPGLs', 'Disease', 'MESH:D009386', (82, 99)) ('hereditary HNPGLs', 'Disease', (82, 99)) 97777 29264540 The guidelines suggest carriers of SDHB mutations require special attention and should additionally receive "periodic" MRI surveillance to detect biochemically silent tumors, but it does not specify the frequency of this imaging. ('SDHB', 'Gene', (35, 39)) ('mutations', 'Var', (40, 49)) ('tumor', 'Phenotype', 'HP:0002664', (167, 172)) ('tumors', 'Disease', 'MESH:D009369', (167, 173)) ('tumors', 'Disease', (167, 173)) ('SDHB', 'Gene', '6390', (35, 39)) ('tumors', 'Phenotype', 'HP:0002664', (167, 173)) 97782 29264540 Some authors have addressed the uncertainty about the optimal age to begin screening carriers of SDHB mutations. ('SDHB', 'Gene', (97, 101)) ('mutations', 'Var', (102, 111)) ('SDHB', 'Gene', '6390', (97, 101)) 97783 29264540 adopted the Dutch clinical guideline recommendations of annual clinical and biochemical review with MRI of the TAP regions every 2 years and MRI of the head and neck every 3 years to prospectively investigate the occurrence of PGLs in 93 SDHB mutation carriers (21 index patients and 72 asymptomatic carriers) over a median follow-up period of 3 years. ('SDHB', 'Gene', '6390', (238, 242)) ('mutation', 'Var', (243, 251)) ('SDHB', 'Gene', (238, 242)) ('patients', 'Species', '9606', (271, 279)) ('PGL', 'Phenotype', 'HP:0002668', (227, 230)) 97785 29264540 Kimani and Young divide their surveillance regimen suggestions by genotype with two yearly imaging scans of skull base and neck and four yearly whole-body imaging scans in SDHD or SDHC mutation carriers and two yearly TAP imaging scans in SDHB mutation carriers, using either MRI or CT, and additionally with four yearly 123I-MIBGs to detect PGLs or metastatic disease. ('PGL', 'Phenotype', 'HP:0002668', (342, 345)) ('123I-MIBGs', 'Chemical', 'MESH:D019797', (321, 331)) ('SDHB', 'Gene', '6390', (239, 243)) ('SDHC', 'Gene', '6391', (180, 184)) ('mutation', 'Var', (185, 193)) ('SDHB', 'Gene', (239, 243)) ('SDHC', 'Gene', (180, 184)) ('mutation', 'Var', (244, 252)) ('SDHD', 'Gene', '6392', (172, 176)) ('metastatic', 'CPA', (350, 360)) ('SDHD', 'Gene', (172, 176)) ('PGLs', 'Disease', (342, 346)) 97786 29264540 The youngest patients we can identify with PPGL disease in the context of an SDHB mutation are aged 6 years with an abdominal PGL, 9 years with an pheochromocytoma or HNPGL, 15 years with a thoracic PGL, and 5 years with SDHD mutations. ('SDHD', 'Gene', (221, 225)) ('SDHD', 'Gene', '6392', (221, 225)) ('PPGL disease', 'Disease', (43, 55)) ('PGL', 'Phenotype', 'HP:0002668', (44, 47)) ('mutation', 'Var', (82, 90)) ('SDHB', 'Gene', '6390', (77, 81)) ('patients', 'Species', '9606', (13, 21)) ('PGL', 'Phenotype', 'HP:0002668', (126, 129)) ('PGL', 'Phenotype', 'HP:0002668', (199, 202)) ('SDHB', 'Gene', (77, 81)) ('pheochromocytoma', 'Disease', (147, 163)) ('PGL', 'Phenotype', 'HP:0002668', (169, 172)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (147, 163)) ('abdominal PGL', 'Disease', (116, 129)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (147, 163)) 97794 29264540 We would argue that asymptomatic carriers of SDHx mutations fall in this latter category, and therefore MRI, rather than CT, should be the imaging of choice for surveillance in this group. ('mutations', 'Var', (50, 59)) ('fall', 'Phenotype', 'HP:0002527', (60, 64)) ('SDHx', 'Chemical', '-', (45, 49)) ('SDHx', 'Gene', (45, 49)) 97795 29264540 Several studies have looked at prevalence of tumors in asymptomatic carriers of SDHx mutations using different imaging modalities. ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('tumors', 'Disease', (45, 51)) ('tumors', 'Phenotype', 'HP:0002664', (45, 51)) ('tumors', 'Disease', 'MESH:D009369', (45, 51)) ('mutations', 'Var', (85, 94)) ('SDHx', 'Chemical', '-', (80, 84)) ('SDHx', 'Gene', (80, 84)) 97796 29264540 The multicenter PGL.EVA study is a large study that compared four methods of radiological screening in 238 subjects (113 index patients and 125 asymptomatic carriers) with mutations in all SDH subunits (124 SDHB, of which 85 were carriers), with a follow-up period of 3 years. ('mutations', 'Var', (172, 181)) ('SDHB', 'Gene', '6390', (207, 211)) ('SDH', 'Gene', '6390', (189, 192)) ('SDHB', 'Gene', (207, 211)) ('SDH', 'Gene', '6390', (207, 210)) ('SDH', 'Gene', (189, 192)) ('patients', 'Species', '9606', (127, 135)) ('PGL', 'Phenotype', 'HP:0002668', (16, 19)) ('SDH', 'Gene', (207, 210)) 97799 29264540 A retrospective subanalysis of the PGL.EVA cohort evaluated the use of a rapid contrast-enhanced angio-MRI, which has a much shorter duration of scanning of 5 to 10 minutes, in detecting HNPGL in SDHx mutation carriers and found no difference in performance with standardized MRI. ('detecting', 'Reg', (177, 186)) ('SDHx', 'Gene', (196, 200)) ('SDHx', 'Chemical', '-', (196, 200)) ('PGL', 'Phenotype', 'HP:0002668', (35, 38)) ('HNPGL', 'Gene', (187, 192)) ('PGL', 'Phenotype', 'HP:0002668', (189, 192)) ('mutation', 'Var', (201, 209)) 97800 29264540 provides an excellent overview of the use of different functional imaging modalities in SDHB mutation carriers. ('SDHB', 'Gene', '6390', (88, 92)) ('mutation', 'Var', (93, 101)) ('carriers', 'Reg', (102, 110)) ('SDHB', 'Gene', (88, 92)) 97804 29264540 Both MIBG and 111In-diethylene triamine pentacetic acid-pentetreotide scintigraphy (octreoscan) have been shown to be inferior in localizing PPGLs in SDHx mutation carriers and therefore are less useful in surveillance imaging. ('PPGLs', 'Protein', (141, 146)) ('SDHx', 'Gene', (150, 154)) ('MIBG', 'Chemical', 'MESH:D019797', (5, 9)) ('SDHx', 'Chemical', '-', (150, 154)) ('PGL', 'Phenotype', 'HP:0002668', (142, 145)) ('inferior', 'NegReg', (118, 126)) ('mutation', 'Var', (155, 163)) ('111In-diethylene triamine pentacetic acid-pentetreotide', 'Chemical', '-', (14, 69)) ('localizing', 'MPA', (130, 140)) ('PPGLs', 'Chemical', '-', (141, 146)) 97819 29264540 A recent study in the United Kingdom reported on the use of rapid-sequencing MRI for the long-term monitoring of individuals with SDHx mutations. ('SDHx', 'Chemical', '-', (130, 134)) ('SDHx', 'Gene', (130, 134)) ('mutations', 'Var', (135, 144)) 97820 29264540 They analyzed a cohort of 47 patients (of whom 35 were asymptomatic carriers) with known SDH mutations over a 10-year follow-up period. ('SDH', 'Gene', '6390', (89, 92)) ('patients', 'Species', '9606', (29, 37)) ('SDH', 'Gene', (89, 92)) ('mutations', 'Var', (93, 102)) 97822 29264540 The authors concluded that biannual rapid-sequence noncontrast MRI is effective to monitor individuals with SDHx mutations. ('SDHx', 'Gene', (108, 112)) ('mutations', 'Var', (113, 122)) ('SDHx', 'Chemical', '-', (108, 112)) 97829 29264540 Cumulatively, these three cohorts provide data on 181 individuals with SDHx mutations (161 SDHB), including 128 asymptomatic carriers (120 SDHB), which supports the use of nonionizing imaging for surveillance in the form of rapid-sequence MRI as a safe and reliable modality for monitoring and identifying new disease. ('mutations', 'Var', (76, 85)) ('SDHB', 'Gene', '6390', (139, 143)) ('SDHx', 'Chemical', '-', (71, 75)) ('SDHB', 'Gene', (139, 143)) ('SDHx', 'Gene', (71, 75)) ('SDHB', 'Gene', '6390', (91, 95)) ('SDHB', 'Gene', (91, 95)) 97833 29264540 In SDHB mutations, current evidence suggests each decade of life presents the same risk of developing a tumor and each tumor has the same risk of malignant transformation. ('tumor', 'Disease', (119, 124)) ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('tumor', 'Disease', (104, 109)) ('mutations', 'Var', (8, 17)) ('SDHB', 'Gene', '6390', (3, 7)) ('tumor', 'Disease', 'MESH:D009369', (119, 124)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('SDHB', 'Gene', (3, 7)) ('tumor', 'Disease', 'MESH:D009369', (104, 109)) 97841 29264540 It remains, as yet, unclear how asymptomatic carriers of SDHA and SDHC mutations fit into these protocols. ('SDHC', 'Gene', (66, 70)) ('SDHA', 'Gene', '6389', (57, 61)) ('mutations', 'Var', (71, 80)) ('SDHC', 'Gene', '6391', (66, 70)) ('SDHA', 'Gene', (57, 61)) 97842 29264540 In our center, we currently use the protocol described previously for SDHB mutation carriers. ('SDHB', 'Gene', '6390', (70, 74)) ('mutation', 'Var', (75, 83)) ('SDHB', 'Gene', (70, 74)) 97914 28469506 Genotype-Phenotype Correlation in Patients With Germline Mutations of VHL, RET, SDHB, and SDHD Genes: Thai Experience Mutations in the VHL, RET, SDHB, and SDHD genes are responsible for von Hippel-Lindau (VHL) disease, multiple endocrine neoplasia type 2 (MEN2), and familial paraganglioma, respectively. ('SDHD', 'Gene', '6392', (90, 94)) ('RET', 'Gene', (75, 78)) ('VHL', 'Gene', (135, 138)) ('VHL', 'Gene', (205, 208)) ('SDHD', 'Gene', (155, 159)) ('MEN', 'Species', '9606', (256, 259)) ('SDHB', 'Gene', (145, 149)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (267, 289)) ('RET', 'Gene', (140, 143)) ('Patients', 'Species', '9606', (34, 42)) ('multiple endocrine neoplasia type 2', 'Disease', (219, 254)) ('paraganglioma', 'Phenotype', 'HP:0002668', (276, 289)) ('responsible for', 'Reg', (170, 185)) ('VHL', 'Gene', (70, 73)) ('SDHD', 'Gene', (90, 94)) ('SDHB', 'Gene', (80, 84)) ('VHL', 'Gene', '7428', (135, 138)) ('VHL', 'Gene', '7428', (205, 208)) ('familial paraganglioma', 'Disease', (267, 289)) ('VHL', 'Gene', '7428', (70, 73)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (219, 254)) ('RET', 'Gene', '5979', (75, 78)) ('neoplasia', 'Phenotype', 'HP:0002664', (238, 247)) ('SDHD', 'Gene', '6392', (155, 159)) ('RET', 'Gene', '5979', (140, 143)) ('SDHB', 'Gene', '6390', (145, 149)) ('Mutations', 'Var', (118, 127)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (228, 247)) ('von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (186, 217)) ('SDHB', 'Gene', '6390', (80, 84)) 97917 28469506 In patients with VHL, 5 known VHL mutations were identified: p.Trp88X, p.Ile151Thr, p.Arg161X, p.Arg167Gln, and p.Leu178Arg. ('p.Leu178Arg', 'Mutation', 'rs5030822', (112, 123)) ('p.Arg167Gln', 'Mutation', 'rs5030821', (95, 106)) ('VHL', 'Gene', (30, 33)) ('p.Trp88X', 'Var', (61, 69)) ('p.Arg161X', 'Var', (84, 93)) ('p.Arg161X', 'Mutation', 'rs5030818', (84, 93)) ('VHL', 'Gene', '7428', (30, 33)) ('VHL', 'Gene', (17, 20)) ('patients', 'Species', '9606', (3, 11)) ('p.Leu178Arg', 'Var', (112, 123)) ('p.Trp88X', 'Mutation', 'rs119103277', (61, 69)) ('p.Arg167Gln', 'Var', (95, 106)) ('VHL', 'Gene', '7428', (17, 20)) ('p.Ile151Thr', 'Var', (71, 82)) ('p.Ile151Thr', 'Mutation', 'rs869025655', (71, 82)) 97918 28469506 The most frequent RET mutations in patients with MEN2A occurred at codon 634 on exon 11: p.Cys634Tyr, p.Cys634Trp, and p.Cys634Arg. ('p.Cys634Arg', 'Var', (119, 130)) ('RET', 'Gene', '5979', (18, 21)) ('p.Cys634Arg', 'Mutation', 'rs75076352', (119, 130)) ('MEN2A', 'Gene', (49, 54)) ('p.Cys634Trp', 'SUBSTITUTION', 'None', (102, 113)) ('MEN2A', 'Gene', '5979', (49, 54)) ('p.Cys634Tyr', 'Var', (89, 100)) ('p.Cys634Trp', 'Var', (102, 113)) ('patients', 'Species', '9606', (35, 43)) ('RET', 'Gene', (18, 21)) ('p.Cys634Tyr', 'Mutation', 'rs75996173', (89, 100)) 97919 28469506 A patient with MEN2B had p.Met918Thr RET mutation. ('p.Met918Thr', 'Var', (25, 36)) ('RET', 'Gene', (37, 40)) ('p.Met918Thr', 'Mutation', 'rs74799832', (25, 36)) ('MEN2B', 'Gene', (15, 20)) ('RET', 'Gene', '5979', (37, 40)) ('MEN2B', 'Gene', '5979', (15, 20)) ('patient', 'Species', '9606', (2, 9)) 97920 28469506 Approximately, 90% of patients with MEN2 had medullary thyroid carcinoma. ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (55, 72)) ('thyroid carcinoma', 'Disease', (55, 72)) ('MEN2', 'Var', (36, 40)) ('carcinoma', 'Phenotype', 'HP:0030731', (63, 72)) ('patients', 'Species', '9606', (22, 30)) ('MEN', 'Species', '9606', (36, 39)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (45, 72)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (55, 72)) 97921 28469506 Pheochromocytoma was found in 55.6% of patients with MEN2, and 60% of them had bilateral lesions. ('MEN', 'Species', '9606', (53, 56)) ('Pheochromocytoma', 'Disease', (0, 16)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('patients', 'Species', '9606', (39, 47)) ('MEN2', 'Var', (53, 57)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) 97922 28469506 One patient with malignant thoracic paraganglioma had p.Arg46X mutation of SDHB. ('malignant thoracic paraganglioma', 'Disease', 'MESH:C565335', (17, 49)) ('p.Arg46X', 'Var', (54, 62)) ('SDHB', 'Gene', '6390', (75, 79)) ('patient', 'Species', '9606', (4, 11)) ('p.Arg46X', 'Mutation', 'rs74315370', (54, 62)) ('SDHB', 'Gene', (75, 79)) ('paraganglioma', 'Phenotype', 'HP:0002668', (36, 49)) ('malignant thoracic paraganglioma', 'Disease', (17, 49)) 97929 28469506 Multiple endocrine neoplasia type 2 affected by germline mutations in the RET proto-oncogene includes MEN2A, MEN2B, and familial medullary thyroid carcinoma (MTC) MEN2A is characterized by MTC in >90% of the patients, pheochromocytoma in 50%, primary hyperparathyroidism (PHPT) in 20%, and cutaneous lichen amyloidosis (CLA) in 5%. ('cutaneous lichen amyloidosis', 'Disease', 'MESH:C562643', (290, 318)) ('MEN2B', 'Gene', '5979', (109, 114)) ('MEN2A', 'Gene', (102, 107)) ('Multiple endocrine neoplasia type 2', 'Disease', (0, 35)) ('primary hyperparathyroidism', 'Disease', 'MESH:D049950', (243, 270)) ('CLA', 'Gene', (320, 323)) ('neoplasia', 'Phenotype', 'HP:0002664', (19, 28)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (251, 270)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (139, 156)) ('cutaneous lichen amyloidosis', 'Phenotype', 'HP:0032346', (290, 318)) ('MTC', 'Phenotype', 'HP:0002865', (189, 192)) ('germline mutations', 'Var', (48, 66)) ('RET', 'Gene', (74, 77)) ('thyroid carcinoma', 'Disease', (139, 156)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (218, 234)) ('primary hyperparathyroidism', 'Phenotype', 'HP:0008200', (243, 270)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (129, 156)) ('cutaneous lichen amyloidosis', 'Disease', (290, 318)) ('MEN2A', 'Gene', (163, 168)) ('MEN2A', 'Gene', '5979', (163, 168)) ('MEN2B', 'Gene', (109, 114)) ('pheochromocytoma', 'Disease', (218, 234)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (9, 28)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (139, 156)) ('amyloidosis', 'Phenotype', 'HP:0011034', (307, 318)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (218, 234)) ('PHPT', 'Phenotype', 'HP:0008200', (272, 276)) ('Multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (0, 35)) ('patients', 'Species', '9606', (208, 216)) ('carcinoma', 'Phenotype', 'HP:0030731', (147, 156)) ('CLA', 'Gene', '6404', (320, 323)) ('MTC', 'Disease', (189, 192)) ('CLA', 'Phenotype', 'HP:0032346', (320, 323)) ('RET', 'Gene', '5979', (74, 77)) ('primary hyperparathyroidism', 'Disease', (243, 270)) ('MTC', 'Phenotype', 'HP:0002865', (158, 161)) ('MEN2A', 'Gene', '5979', (102, 107)) 97932 28469506 Mutations in the succinate dehydrogenase (SDH) subunit genes (SDHA, SDHAF2, SDHB, SDHC, SDHD) have been linked to familial paraganglioma. ('SDHAF2', 'Gene', '54949', (68, 74)) ('SDH', 'Gene', '6390', (42, 45)) ('SDH', 'Gene', (68, 71)) ('SDHC', 'Gene', '6391', (82, 86)) ('SDHD', 'Gene', '6392', (88, 92)) ('SDH', 'Gene', '6390', (88, 91)) ('SDH', 'Gene', (76, 79)) ('SDH', 'Gene', '6390', (62, 65)) ('SDH', 'Gene', (82, 85)) ('SDHD', 'Gene', (88, 92)) ('succinate dehydrogenase', 'Gene', (17, 40)) ('SDH', 'Gene', (42, 45)) ('Mutations', 'Var', (0, 9)) ('SDHC', 'Gene', (82, 86)) ('SDH', 'Gene', (88, 91)) ('SDHB', 'Gene', '6390', (76, 80)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (114, 136)) ('SDHA', 'Gene', (62, 66)) ('SDH', 'Gene', (62, 65)) ('SDH', 'Gene', '6390', (68, 71)) ('SDHA', 'Gene', '6389', (62, 66)) ('SDHA', 'Gene', (68, 72)) ('succinate dehydrogenase', 'Gene', '6390', (17, 40)) ('linked to', 'Reg', (104, 113)) ('SDHB', 'Gene', (76, 80)) ('paraganglioma', 'Phenotype', 'HP:0002668', (123, 136)) ('SDHA', 'Gene', '6389', (68, 72)) ('SDH', 'Gene', '6390', (76, 79)) ('SDH', 'Gene', '6390', (82, 85)) ('familial paraganglioma', 'Disease', (114, 136)) ('SDHAF2', 'Gene', (68, 74)) 97933 28469506 Neurofibromatosis type 1 is an autosomal dominant disorder that results from a mutation in the NF1 gene. ('results from', 'Reg', (64, 76)) ('autosomal dominant disorder', 'Disease', (31, 58)) ('NF1', 'Gene', (95, 98)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (0, 17)) ('NF1', 'Gene', '4763', (95, 98)) ('mutation', 'Var', (79, 87)) ('Neurofibromatosis type 1', 'Gene', (0, 24)) ('autosomal dominant disorder', 'Disease', 'MESH:D030342', (31, 58)) ('Neurofibromatosis type 1', 'Gene', '4763', (0, 24)) 97936 28469506 Genotype-phenotype correlations have been documented for these disorders, and specific mutations are associated with particular patterns of tumor formation. ('men', 'Species', '9606', (46, 49)) ('tumor', 'Disease', 'MESH:D009369', (140, 145)) ('associated', 'Reg', (101, 111)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('mutations', 'Var', (87, 96)) ('tumor', 'Disease', (140, 145)) 97938 28469506 The purpose of this study is to retrospectively review the spectrum of germline mutations in VHL, RET, SDHB, and SDHD genes that underlie hereditary PPGLs, with an emphasis on genotype-phenotype correlations in Thai patients. ('SDHB', 'Gene', (103, 107)) ('mutations', 'Var', (80, 89)) ('VHL', 'Gene', '7428', (93, 96)) ('SDHD', 'Gene', (113, 117)) ('RET', 'Gene', (98, 101)) ('SDHD', 'Gene', '6392', (113, 117)) ('patients', 'Species', '9606', (216, 224)) ('PPGLs', 'Disease', (149, 154)) ('SDHB', 'Gene', '6390', (103, 107)) ('VHL', 'Gene', (93, 96)) ('RET', 'Gene', '5979', (98, 101)) 97945 28469506 DNA was extracted from peripheral blood leukocytes using a standard protocol and analyzed for germline mutations of RET (exons 10-16), VHL (all exons), SDHB (all exons), and SDHD (all exons). ('mutations', 'Var', (103, 112)) ('VHL', 'Gene', (135, 138)) ('SDHB', 'Gene', (152, 156)) ('VHL', 'Gene', '7428', (135, 138)) ('RET', 'Gene', (116, 119)) ('SDHD', 'Gene', (174, 178)) ('SDHD', 'Gene', '6392', (174, 178)) ('SDHB', 'Gene', '6390', (152, 156)) ('RET', 'Gene', '5979', (116, 119)) 97947 28469506 Patients with clinical manifestations suggestive of VHL or MEN2 were first screened for VHL or RET mutation, respectively. ('RET', 'Gene', (95, 98)) ('VHL', 'Gene', '7428', (52, 55)) ('VHL', 'Gene', (88, 91)) ('MEN', 'Species', '9606', (59, 62)) ('mutation', 'Var', (99, 107)) ('VHL', 'Gene', '7428', (88, 91)) ('Patients', 'Species', '9606', (0, 8)) ('RET', 'Gene', '5979', (95, 98)) ('VHL', 'Gene', (52, 55)) 97948 28469506 Individuals with head and neck paraganglioma had sequential testing beginning with SDHD mutation screening. ('mutation', 'Var', (88, 96)) ('paraganglioma', 'Disease', 'MESH:D010235', (31, 44)) ('paraganglioma', 'Phenotype', 'HP:0002668', (31, 44)) ('SDHD', 'Gene', '6392', (83, 87)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (17, 44)) ('paraganglioma', 'Disease', (31, 44)) ('SDHD', 'Gene', (83, 87)) 97949 28469506 Subjects with thoracic and abdominal paragangliomas had sequential testing beginning with SDHB mutation screening. ('SDHB', 'Gene', '6390', (90, 94)) ('thoracic', 'Disease', (14, 22)) ('SDHB', 'Gene', (90, 94)) ('abdominal paragangliomas', 'Disease', 'MESH:D010235', (27, 51)) ('gliomas', 'Phenotype', 'HP:0009733', (44, 51)) ('abdominal paragangliomas', 'Disease', (27, 51)) ('paraganglioma', 'Phenotype', 'HP:0002668', (37, 50)) ('paragangliomas', 'Phenotype', 'HP:0002668', (37, 51)) ('mutation', 'Var', (95, 103)) 97950 28469506 Testing for SDHA, SDHAF2, SDHC, HIF2A, TMEM127, MAX, or HF was not performed in the study because these gene mutations have been identified as PPGL susceptibility genes in the past 5 to 7 years. ('SDHA', 'Gene', '6389', (18, 22)) ('SDHC', 'Gene', '6391', (26, 30)) ('SDHA', 'Gene', '6389', (12, 16)) ('SDHA', 'Gene', (18, 22)) ('SDHAF2', 'Gene', (18, 24)) ('to 7', 'Species', '1214577', (183, 187)) ('PPGL', 'Gene', (143, 147)) ('TMEM127', 'Gene', (39, 46)) ('TMEM127', 'Gene', '55654', (39, 46)) ('SDHAF2', 'Gene', '54949', (18, 24)) ('SDHA', 'Gene', (12, 16)) ('mutations', 'Var', (109, 118)) ('SDHC', 'Gene', (26, 30)) 97956 28469506 We found germline point mutations on the VHL gene in 11 of 16 patients. ('germline point mutations', 'Var', (9, 33)) ('patients', 'Species', '9606', (62, 70)) ('VHL', 'Gene', '7428', (41, 44)) ('VHL', 'Gene', (41, 44)) 97960 28469506 Five known heterozygous mutations included 2 nonsense (p.Trp88X and p.Arg161X) and 3 missense mutations (p.Ile151Thr, p.Arg167Gln, and p.Leu178Arg) which were identified in 11 patients. ('p.Arg161X', 'Mutation', 'rs5030818', (68, 77)) ('patients', 'Species', '9606', (176, 184)) ('p.Ile151Thr', 'Var', (105, 116)) ('p.Trp88X', 'Mutation', 'rs119103277', (55, 63)) ('p.Ile151Thr', 'Mutation', 'rs869025655', (105, 116)) ('p.Leu178Arg', 'Mutation', 'rs5030822', (135, 146)) ('p.Arg167Gln', 'Var', (118, 129)) ('p.Leu178Arg', 'Var', (135, 146)) ('p.Arg161X', 'Var', (68, 77)) ('p.Trp88X', 'Var', (55, 63)) ('p.Arg167Gln', 'Mutation', 'rs5030821', (118, 129)) 97962 28469506 Two patients with p.Arg167Gln mutation presented with bilateral pheochromocytomas without classic triads of episodic headache, sweating, and tachycardia. ('tachycardia', 'Phenotype', 'HP:0001649', (141, 152)) ('episodic headache', 'Disease', (108, 125)) ('p.Arg167Gln', 'Var', (18, 29)) ('tachycardia', 'Disease', 'MESH:D013610', (141, 152)) ('sweating', 'Phenotype', 'HP:0000975', (127, 135)) ('headache', 'Phenotype', 'HP:0002315', (117, 125)) ('tachycardia', 'Disease', (141, 152)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (64, 81)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (64, 80)) ('episodic headache', 'Disease', 'MESH:D006261', (108, 125)) ('presented with', 'Reg', (39, 53)) ('patients', 'Species', '9606', (4, 12)) ('pheochromocytomas', 'Disease', (64, 81)) ('p.Arg167Gln', 'Mutation', 'rs5030821', (18, 29)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (64, 81)) 97966 28469506 All heterozygous missense mutations (p.Cys634Arg, p.Cys634Trp, and p.Cys634Tyr) in the patients with MEN2A involved cysteine residue in the RET protein extracellular domain encoded in RET exon 11 (codon 634). ('RET', 'Gene', (184, 187)) ('p.Cys634Trp', 'SUBSTITUTION', 'None', (50, 61)) ('p.Cys634Tyr', 'Var', (67, 78)) ('cysteine residue', 'MPA', (116, 132)) ('p.Cys634Trp', 'Var', (50, 61)) ('p.Cys634Arg', 'Mutation', 'rs75076352', (37, 48)) ('RET', 'Gene', '5979', (184, 187)) ('MEN2A', 'Gene', '5979', (101, 106)) ('RET', 'Gene', (140, 143)) ('involved', 'Reg', (107, 115)) ('p.Cys634Tyr', 'Mutation', 'rs75996173', (67, 78)) ('cysteine', 'Chemical', 'MESH:D003545', (116, 124)) ('MEN2A', 'Gene', (101, 106)) ('patients', 'Species', '9606', (87, 95)) ('RET', 'Gene', '5979', (140, 143)) ('p.Cys634Arg', 'Var', (37, 48)) 97969 28469506 He was the grandson of the index case (family p.Cys634Tyr) and underwent genetic surveillance for MEN2A. ('MEN2A', 'Gene', (98, 103)) ('p.Cys634Tyr', 'Var', (46, 57)) ('MEN2A', 'Gene', '5979', (98, 103)) ('p.Cys634Tyr', 'Mutation', 'rs75996173', (46, 57)) 97973 28469506 Bilateral pheochromocytomas were found in 3 patients with RET mutation on codon 634 and caused more adrenergic symptoms (eg, hypertension, diaphoresis, and palpitation) than in patients with unilateral pheochromocytoma. ('hypertension', 'Disease', (125, 137)) ('palpitation', 'Phenotype', 'HP:0001962', (156, 167)) ('RET', 'Gene', (58, 61)) ('caused', 'Reg', (88, 94)) ('diaphoresis', 'Phenotype', 'HP:0000975', (139, 150)) ('unilateral pheochromocytoma', 'Disease', (191, 218)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (10, 27)) ('hypertension', 'Phenotype', 'HP:0000822', (125, 137)) ('patients', 'Species', '9606', (44, 52)) ('adrenergic symptoms', 'MPA', (100, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (202, 218)) ('more', 'PosReg', (95, 99)) ('unilateral pheochromocytoma', 'Disease', 'MESH:D010673', (191, 218)) ('Bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (0, 27)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (10, 26)) ('RET', 'Gene', '5979', (58, 61)) ('Bilateral pheochromocytomas', 'Disease', (0, 27)) ('patients', 'Species', '9606', (177, 185)) ('hypertension', 'Disease', 'MESH:D006973', (125, 137)) ('mutation', 'Var', (62, 70)) ('diaphoresis', 'Disease', (139, 150)) 97975 28469506 Two patients' DNA (II-2 and II-4) revealed a heterozygous single-nucleotide polymorphism in the RET gene at the exon 11 codon 691, leading to conversion of GGT to AGT, substituting glycine with serine (p.Gly691Ser, rs1799939) (Figure 1). ('single-nucleotide polymorphism', 'Var', (58, 88)) ('AGT', 'Gene', (163, 166)) ('p.Gly691Ser', 'Var', (202, 213)) ('glycine', 'Chemical', 'MESH:D005998', (181, 188)) ('RET', 'Gene', '5979', (96, 99)) ('AGT', 'Gene', '183', (163, 166)) ('p.Gly691Ser', 'Mutation', 'rs1799939', (202, 213)) ('rs1799939', 'Mutation', 'rs1799939', (215, 224)) ('RET', 'Gene', (96, 99)) ('conversion', 'Var', (142, 152)) ('patients', 'Species', '9606', (4, 12)) ('serine', 'Chemical', 'MESH:D012694', (194, 200)) ('rs1799939', 'Var', (215, 224)) ('GGT', 'Gene', (156, 159)) 97986 28469506 All patients' DNA was sequenced for all exons of SDHB and SDHD genes, but only 1 heterozygous nonsense mutation was detected at p.Arg46X on exon 2 of the SDHB gene of a patient presenting with quadriplegia, who was found to have nonsecreting malignant thoracic paraganglioma. ('quadriplegia', 'Phenotype', 'HP:0002445', (193, 205)) ('SDHB', 'Gene', (49, 53)) ('quadriplegia', 'Disease', 'MESH:D011782', (193, 205)) ('p.Arg46X', 'Mutation', 'rs74315370', (128, 136)) ('quadriplegia', 'Disease', (193, 205)) ('SDHD', 'Gene', '6392', (58, 62)) ('SDHB', 'Gene', '6390', (49, 53)) ('patient', 'Species', '9606', (4, 11)) ('SDHB', 'Gene', '6390', (154, 158)) ('paraganglioma', 'Phenotype', 'HP:0002668', (261, 274)) ('malignant thoracic paraganglioma', 'Disease', (242, 274)) ('patient', 'Species', '9606', (169, 176)) ('patients', 'Species', '9606', (4, 12)) ('p.Arg46X on', 'Var', (128, 139)) ('SDHB', 'Gene', (154, 158)) ('malignant thoracic paraganglioma', 'Disease', 'MESH:C565335', (242, 274)) ('SDHD', 'Gene', (58, 62)) 97998 28469506 Large deletions and truncating mutations appear to be common in type 1 disease, whereas most patients with type 2 VHL disease have missense mutations. ('type 1 disease', 'Disease', (64, 78)) ('patients', 'Species', '9606', (93, 101)) ('VHL disease', 'Disease', (114, 125)) ('truncating mutations', 'Var', (20, 40)) ('common', 'Reg', (54, 60)) ('missense mutations', 'Var', (131, 149)) ('Large deletions', 'Var', (0, 15)) ('VHL disease', 'Disease', 'MESH:D006623', (114, 125)) 97999 28469506 Missense mutations were associated with a high risk of pheochromocytoma. ('associated', 'Reg', (24, 34)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (55, 71)) ('Missense mutations', 'Var', (0, 18)) ('pheochromocytoma', 'Disease', (55, 71)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (55, 71)) 98002 28469506 Thus, the disease could affect from de novo germline VHL mutations or the mutation inherited from an asymptomatic or mildly affected mosaic parent. ('VHL', 'Gene', (53, 56)) ('VHL', 'Gene', '7428', (53, 56)) ('mutations', 'Var', (57, 66)) ('affect', 'Reg', (24, 30)) ('germline', 'Var', (44, 52)) 98003 28469506 The specific RET mutations correlate with a particular phenotype and clinical course of MEN2A. ('RET', 'Gene', (13, 16)) ('MEN2A', 'Gene', '5979', (88, 93)) ('RET', 'Gene', '5979', (13, 16)) ('mutations', 'Var', (17, 26)) ('MEN2A', 'Gene', (88, 93)) 98005 28469506 Identification of RET mutation can guide treatment decisions considering prophylactic thyroidectomy before MTC develops. ('mutation', 'Var', (22, 30)) ('RET', 'Gene', '5979', (18, 21)) ('MTC', 'Phenotype', 'HP:0002865', (107, 110)) ('men', 'Species', '9606', (46, 49)) ('RET', 'Gene', (18, 21)) 98006 28469506 Mutations on codon 634 in exon 11 were the most frequent RET mutation among the patients in this study. ('Mutations on codon 634', 'Var', (0, 22)) ('RET', 'Gene', (57, 60)) ('patients', 'Species', '9606', (80, 88)) ('RET', 'Gene', '5979', (57, 60)) 98007 28469506 Patients with RET mutations on codon 634 had high penetrance of MTC and half of the patients developed pheochromocytoma, in agreement with the results from other ethnic populations. ('pheochromocytoma', 'Disease', 'MESH:D010673', (103, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (103, 119)) ('patients', 'Species', '9606', (84, 92)) ('RET', 'Gene', '5979', (14, 17)) ('MTC', 'Disease', (64, 67)) ('mutations on codon 634', 'Var', (18, 40)) ('Patients', 'Species', '9606', (0, 8)) ('developed', 'Reg', (93, 102)) ('men', 'Species', '9606', (129, 132)) ('RET', 'Gene', (14, 17)) ('pheochromocytoma', 'Disease', (103, 119)) ('MTC', 'Phenotype', 'HP:0002865', (64, 67)) 98009 28469506 It has become apparent that different families with MEN2A due to the same RET mutation often have significant variability in the clinical manifestations of MEN2A syndrome and aggressiveness of MTC. ('MEN2A', 'Gene', (156, 161)) ('mutation', 'Var', (78, 86)) ('aggressiveness', 'Disease', (175, 189)) ('RET', 'Gene', (74, 77)) ('MEN2A', 'Gene', '5979', (52, 57)) ('aggressiveness', 'Phenotype', 'HP:0000718', (175, 189)) ('MEN2A', 'Gene', (52, 57)) ('RET', 'Gene', '5979', (74, 77)) ('MTC', 'Phenotype', 'HP:0002865', (193, 196)) ('MEN2A', 'Gene', '5979', (156, 161)) ('aggressiveness', 'Disease', 'MESH:D001523', (175, 189)) 98010 28469506 It had been reported that polymorphism of p.Gly91Ser may be such a genetic modifier on the aggressiveness of MTC. ('p.Gly91Ser', 'Mutation', 'rs766480138', (42, 52)) ('aggressiveness', 'Disease', (91, 105)) ('aggressiveness', 'Phenotype', 'HP:0000718', (91, 105)) ('p.Gly91Ser', 'Var', (42, 52)) ('aggressiveness', 'Disease', 'MESH:D001523', (91, 105)) ('MTC', 'Phenotype', 'HP:0002865', (109, 112)) ('polymorphism', 'Var', (26, 38)) 98011 28469506 In our study, p.Cys634Tyr mutation was found in a 51-year-old patient with MTC only in the microcarcinoma stage, different from other family members. ('carcinoma', 'Phenotype', 'HP:0030731', (96, 105)) ('p.Cys634Tyr', 'Var', (14, 25)) ('p.Cys634Tyr', 'Mutation', 'rs75996173', (14, 25)) ('patient', 'Species', '9606', (62, 69)) ('microcarcinoma', 'Disease', (91, 105)) ('MTC', 'Phenotype', 'HP:0002865', (75, 78)) ('microcarcinoma', 'Disease', 'MESH:C563277', (91, 105)) 98012 28469506 However, this issue is still controversial, and the number of subjects in our study was too small to conclude a modifier effect from polymorphism of p.Gly691Ser. ('p.Gly691Ser', 'Mutation', 'rs1799939', (149, 160)) ('p.Gly691Ser', 'Var', (149, 160)) ('polymorphism', 'Var', (133, 145)) 98013 28469506 Most of the patients with MEN2B have an RET mutation in exon 16 (p.Met918Thr) and less often exon 15 (p.Ala883Phe). ('patients', 'Species', '9606', (12, 20)) ('p.Met918Thr', 'Var', (65, 76)) ('MEN2B', 'Gene', '5979', (26, 31)) ('RET', 'Gene', (40, 43)) ('p.Ala883Phe', 'Mutation', 'rs377767429', (102, 113)) ('RET', 'Gene', '5979', (40, 43)) ('p.Met918Thr', 'Mutation', 'rs74799832', (65, 76)) ('MEN2B', 'Gene', (26, 31)) 98014 28469506 The mutation p.Met918Thr carries the highest risk of aggressive MTC and metastases at young age of onset. ('metastases', 'Disease', (72, 82)) ('metastases', 'Disease', 'MESH:D009362', (72, 82)) ('p.Met918Thr', 'Mutation', 'rs74799832', (13, 24)) ('p.Met918Thr', 'Var', (13, 24)) ('MTC', 'Phenotype', 'HP:0002865', (64, 67)) ('aggressive MTC', 'Disease', (53, 67)) 98015 28469506 Met918 is a critical component of the substrate specificity pocket in the tyrosine kinase catalytic core of the RET protein. ('RET', 'Gene', (112, 115)) ('Met918', 'Var', (0, 6)) ('RET', 'Gene', '5979', (112, 115)) 98018 28469506 In this study, a patient with a germline nonsense mutation on the SDHB gene had malignant disease that correlated with previous data. ('SDHB', 'Gene', (66, 70)) ('patient', 'Species', '9606', (17, 24)) ('malignant disease', 'Disease', 'MESH:D009369', (80, 97)) ('SDHB', 'Gene', '6390', (66, 70)) ('germline nonsense mutation', 'Var', (32, 58)) ('malignant disease', 'Disease', (80, 97)) 98022 28469506 In addition, we performed only direct sequencing, which could not reveal several genetic abnormalities such as deletion/duplication/rearrangement. ('genetic abnormalities', 'Disease', (81, 102)) ('men', 'Species', '9606', (141, 144)) ('deletion/duplication/rearrangement', 'Var', (111, 145)) ('genetic abnormalities', 'Disease', 'MESH:D030342', (81, 102)) 98039 27699708 All patients with an International Classification of Diseases version 10 (ICD-10) code of E275 (adrenomedullary hyperfunction), C741 (malignant neoplasm of medulla of adrenal gland), E240 (pituitary-dependent Cushing's disease), E243 (ectopic ACTH syndrome), E248 (other Cushing's syndrome), and/or E249 (Cushing's syndrome, unspecified) and who had attended the out-patient clinic between June 2005 and June 2015 were eligible for inclusion. ('C741', 'Var', (128, 132)) ('patient', 'Species', '9606', (367, 374)) ('malignant neoplasm', 'Disease', 'MESH:D009369', (134, 152)) ('E275', 'Var', (90, 94)) ("Cushing's syndrome", 'Disease', 'MESH:D003480', (305, 323)) ('E243', 'Var', (229, 233)) ('ACTH', 'Gene', '5443', (243, 247)) ('malignant neoplasm', 'Disease', (134, 152)) ('E249', 'Var', (299, 303)) ('patients', 'Species', '9606', (4, 12)) ('E248', 'Var', (259, 263)) ("Cushing's syndrome", 'Phenotype', 'HP:0003118', (305, 323)) ("Cushing's syndrome", 'Disease', (305, 323)) ("pituitary-dependent Cushing's disease", 'Disease', 'MESH:D047748', (189, 226)) ("Cushing's syndrome", 'Disease', 'MESH:D003480', (271, 289)) ('unspecified', 'Species', '32644', (325, 336)) ('neoplasm of medulla of adrenal', 'Phenotype', 'HP:0100642', (144, 174)) ('E240', 'Var', (183, 187)) ("pituitary-dependent Cushing's disease", 'Disease', (189, 226)) ('neoplasm', 'Phenotype', 'HP:0002664', (144, 152)) ("Cushing's syndrome", 'Phenotype', 'HP:0003118', (271, 289)) ('ACTH', 'Gene', (243, 247)) ('patient', 'Species', '9606', (4, 11)) ("Cushing's syndrome", 'Disease', (271, 289)) 98106 27699708 With immunohistological and in vitro studies it was indicated that hypomethylation of the proopiomelanocortin promoter may be responsible for the paradoxical ACTH response to dexamethasone. ('dexamethasone', 'Chemical', 'MESH:D003907', (175, 188)) ('paradoxical ACTH response to dexamethasone', 'Phenotype', 'HP:0003466', (146, 188)) ('responsible', 'Reg', (126, 137)) ('ACTH', 'Gene', (158, 162)) ('hypomethylation', 'Var', (67, 82)) ('ACTH', 'Gene', '5443', (158, 162)) 98108 27699708 The clinical characteristics and pathological findings of these two cases with ectopic ACTH production compared to other pheochromocytomas without ACTH production were quite evident with signs and symptoms of increased cortisol secretion, even though they did not both present with all classic signs such as hypokalemia, hyperglycemia (even though also pheochromocytomas can give hyperglycemia but normally not to the same degree), easy bruising, changes in fat distribution, and so on. ('ACTH', 'Gene', '5443', (87, 91)) ('hyperglycemia', 'Disease', 'MESH:D006943', (380, 393)) ('pheochromocytomas can give hyperglycemia', 'Disease', (353, 393)) ('hypokalemia', 'Disease', 'MESH:D007008', (308, 319)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (353, 370)) ('bruising', 'Disease', 'MESH:D003288', (437, 445)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (121, 138)) ('hyperglycemia', 'Disease', (321, 334)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (353, 369)) ('increased cortisol', 'Phenotype', 'HP:0003118', (209, 227)) ('ectopic', 'Var', (79, 86)) ('ACTH', 'Gene', (87, 91)) ('increased', 'PosReg', (209, 218)) ('ACTH', 'Gene', '5443', (147, 151)) ('hyperglycemia', 'Phenotype', 'HP:0003074', (380, 393)) ('hyperglycemia', 'Disease', 'MESH:D006943', (321, 334)) ('hypokalemia', 'Disease', (308, 319)) ('changes', 'Reg', (447, 454)) ('pheochromocytomas can give hyperglycemia', 'Disease', 'MESH:D006943', (353, 393)) ('bruising', 'Disease', (437, 445)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (121, 137)) ('pheochromocytomas', 'Disease', (353, 370)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (353, 370)) ('cortisol secretion', 'MPA', (219, 237)) ('easy bruising', 'Phenotype', 'HP:0000978', (432, 445)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (121, 138)) ('fat distribution', 'MPA', (458, 474)) ('pheochromocytomas', 'Disease', (121, 138)) ('cortisol', 'Chemical', 'MESH:D006854', (219, 227)) ('hyperglycemia', 'Disease', (380, 393)) ('ACTH', 'Gene', (147, 151)) ('hypokalemia', 'Phenotype', 'HP:0002900', (308, 319)) ('hyperglycemia', 'Phenotype', 'HP:0003074', (321, 334)) 98150 27152317 A left heart catheterization on hospital day 2 revealed only nonobstructive coronary artery disease with a 40% to 50% lesion of the mid-LAD (left artery descending) with an fractional flow reserve of 0.89 (<0.75 or 0.8 is significant). ('coronary artery disease', 'Disease', 'MESH:D003324', (76, 99)) ('lesion', 'Var', (118, 124)) ('nonobstructive coronary artery disease', 'Phenotype', 'HP:0012436', (61, 99)) ('coronary artery disease', 'Disease', (76, 99)) 98166 27152317 Plasma and urine metanephrines were ordered and noted to be elevated to 4.65 nmol/L (<0.50) and 2498 microg/24 h (<400), respectively. ('2498 microg/24', 'Var', (96, 110)) ('metanephrines', 'Chemical', 'MESH:D008676', (17, 30)) ('Plasma', 'MPA', (0, 6)) ('elevated', 'PosReg', (60, 68)) ('urine metanephrines', 'MPA', (11, 30)) 98183 27152317 Through activation of hepatocyte beta and alpha receptors, inhibition of insulin secretion in beta cells of the pancreas, and blockade of GLUT4 transporters in muscle and adipose, catecholamines secreted in pheochromocytomas increase glycogenolysis and gluconeogenesis while interfering with normal feedback control of insulin. ('catecholamines', 'Chemical', 'MESH:D002395', (180, 194)) ('gluconeogenesis', 'MPA', (253, 268)) ('insulin', 'Gene', '3630', (319, 326)) ('glycogenolysis', 'MPA', (234, 248)) ('pheochromocytomas increase', 'Phenotype', 'HP:0002666', (207, 233)) ('GLUT4', 'Gene', '6517', (138, 143)) ('insulin', 'Gene', '3630', (73, 80)) ('interfering', 'NegReg', (275, 286)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (207, 224)) ('activation', 'PosReg', (8, 18)) ('increase', 'PosReg', (225, 233)) ('alpha receptors', 'Protein', (42, 57)) ('insulin', 'Gene', (319, 326)) ('insulin', 'Gene', (73, 80)) ('inhibition', 'NegReg', (59, 69)) ('increase glycogenolysis and gluconeogenesis', 'Phenotype', 'HP:0005959', (225, 268)) ('hepatocyte beta', 'Protein', (22, 37)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (207, 223)) ('blockade', 'Var', (126, 134)) ('feedback control', 'MPA', (299, 315)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (207, 224)) ('pheochromocytomas', 'Disease', (207, 224)) ('GLUT4', 'Gene', (138, 143)) 98188 27152317 In case reports, patients with paragangliomas and polycythemia have been shown to have gain-of-function mutations in the DNA coding for hypoxia-inducible factor proteins. ('mutations', 'Var', (104, 113)) ('hypoxia', 'Disease', (136, 143)) ('hypoxia', 'Disease', 'MESH:D000860', (136, 143)) ('polycythemia', 'Phenotype', 'HP:0001901', (50, 62)) ('paragangliomas', 'Disease', (31, 45)) ('paragangliomas', 'Disease', 'MESH:D010235', (31, 45)) ('polycythemia', 'Disease', 'MESH:D011086', (50, 62)) ('paragangliomas', 'Phenotype', 'HP:0002668', (31, 45)) ('DNA', 'Gene', (121, 124)) ('patients', 'Species', '9606', (17, 25)) ('gain-of-function', 'PosReg', (87, 103)) ('polycythemia', 'Disease', (50, 62)) 98194 26008905 A recessive homozygous p.Asp92Gly SDHD mutation causes prenatal cardiomyopathy and a severe mitochondrial complex II deficiency Succinate dehydrogenase (SDH) is a crucial metabolic enzyme complex that is involved in ATP production, playing roles in both the tricarboxylic cycle and the mitochondrial respiratory chain (complex II). ('causes', 'Reg', (48, 54)) ('mitochondrial complex II deficiency', 'Phenotype', 'HP:0008314', (92, 127)) ('SDH', 'Gene', '6390', (153, 156)) ('mitochondrial complex II deficiency', 'Disease', (92, 127)) ('SDHD', 'Gene', (34, 38)) ('SDH', 'Gene', (34, 37)) ('Succinate dehydrogenase', 'Gene', (128, 151)) ('SDH', 'Gene', (153, 156)) ('mitochondrial complex II deficiency', 'Disease', 'MESH:C565375', (92, 127)) ('p.Asp92Gly', 'Var', (23, 33)) ('cardiomyopathy', 'Disease', (64, 78)) ('Succinate dehydrogenase', 'Gene', '6390', (128, 151)) ('ATP', 'Chemical', 'MESH:D000255', (216, 219)) ('deficiency Succinate', 'Phenotype', 'HP:0020149', (117, 137)) ('SDHD', 'Gene', '6392', (34, 38)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (64, 78)) ('p.Asp92Gly', 'Mutation', 'rs786205436', (23, 33)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (64, 78)) ('SDH', 'Gene', '6390', (34, 37)) 98198 26008905 Biochemical analysis of his skeletal muscle biopsy revealed evidence of a severe isolated complex II deficiency and candidate gene sequencing revealed a novel homozygous c.275A>G, p.(Asp92Gly) SDHD mutation which was shown to be recessively inherited through segregation studies. ('isolated complex II deficiency', 'Disease', (81, 111)) ('SDHD', 'Gene', (193, 197)) ('c.275A>G', 'Var', (170, 178)) ('SDHD', 'Gene', '6392', (193, 197)) ('isolated complex II deficiency', 'Phenotype', 'HP:0008314', (81, 111)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (180, 192)) ('c.275A>G', 'Mutation', 'rs786205436', (170, 178)) ('isolated complex II deficiency', 'Disease', 'MESH:C565375', (81, 111)) 98200 26008905 By introducing both mutations into Saccharomyces cerevisiae, we were able to confirm that the p.(Asp92Gly) mutation causes a more severe oxidative growth phenotype than the p.(Asp92Tyr) mutant, and provides functional evidence to support the pathogenicity of the patient's SDHD mutation. ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (94, 106)) ('patient', 'Species', '9606', (263, 270)) ('causes', 'Reg', (116, 122)) ('Saccharomyces cerevisiae', 'Species', '4932', (35, 59)) ('p.(Asp92Tyr)', 'Mutation', 'rs80338845', (173, 185)) ('p.(Asp92Gly) mutation', 'Var', (94, 115)) ('SDHD', 'Gene', (273, 277)) ('SDHD', 'Gene', '6392', (273, 277)) ('severe oxidative growth phenotype', 'MPA', (130, 163)) 98201 26008905 This is only the second case of mitochondrial complex II deficiency due to inherited SDHD mutations and highlights the importance of sequencing all SDH genes in patients with biochemical and histochemical evidence of isolated mitochondrial complex II deficiency. ('mutations', 'Var', (90, 99)) ('mitochondrial complex II deficiency', 'Disease', 'MESH:C565375', (32, 67)) ('SDH', 'Gene', (85, 88)) ('mitochondrial complex II deficiency', 'Disease', 'MESH:C565375', (226, 261)) ('mitochondrial complex II deficiency', 'Phenotype', 'HP:0008314', (32, 67)) ('SDH', 'Gene', '6390', (148, 151)) ('mitochondrial complex II deficiency', 'Phenotype', 'HP:0008314', (226, 261)) ('mitochondrial complex II deficiency', 'Disease', (32, 67)) ('SDHD', 'Gene', '6392', (85, 89)) ('patients', 'Species', '9606', (161, 169)) ('SDH', 'Gene', '6390', (85, 88)) ('SDHD', 'Gene', (85, 89)) ('SDH', 'Gene', (148, 151)) ('mitochondrial complex II deficiency', 'Disease', (226, 261)) 98207 26008905 Defects in a number of mtDNA and nuclear-encoded genes have been linked to human disease, often associated with a vast genetic and clinical heterogeneity and further compounded by few genotype-phenotype correlations which help guide molecular genetic investigations. ('linked', 'Reg', (65, 71)) ('Defects', 'Var', (0, 7)) ('mtDNA', 'Gene', (23, 28)) ('human', 'Species', '9606', (75, 80)) ('human disease', 'Disease', (75, 88)) 98212 26008905 A recent review describes SDHA mutations as the most common cause of isolated complex II deficiency, with 16 unique mutations reported in 30 patients (Ma et al. ('isolated complex II deficiency', 'Disease', 'MESH:C565375', (69, 99)) ('mutations', 'Var', (31, 40)) ('cause', 'Reg', (60, 65)) ('isolated complex II deficiency', 'Disease', (69, 99)) ('isolated complex II deficiency', 'Phenotype', 'HP:0008314', (69, 99)) ('SDHA', 'Gene', '6389', (26, 30)) ('SDHA', 'Gene', (26, 30)) ('patients', 'Species', '9606', (141, 149)) 98214 26008905 ); the next most common cause are mutations in SDHAF1, 4 mutations have been reported in 13 patients (Ghezzi et al. ('common cause', 'Reg', (17, 29)) ('SDHAF1', 'Gene', '644096', (47, 53)) ('SDHAF1', 'Gene', (47, 53)) ('patients', 'Species', '9606', (92, 100)) ('mutations', 'Var', (34, 43)) 98218 26008905 In addition to their role in primary respiratory chain disease, SDHx mutations can act as drivers of neoplastic transformation following loss of heterozygosity (LOH). ('mutations', 'Var', (69, 78)) ('SDHx', 'Chemical', '-', (64, 68)) ('SDHx', 'Gene', (64, 68)) ('respiratory chain disease', 'Disease', (37, 62)) ('neoplastic transformation', 'CPA', (101, 126)) ('loss', 'NegReg', (137, 141)) ('respiratory chain disease', 'Disease', 'MESH:D028361', (37, 62)) 98219 26008905 One of the most common causes of head and neck paraganglioma (HNPGL) is LOH at the SDHD locus. ('paraganglioma', 'Phenotype', 'HP:0002668', (47, 60)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (33, 60)) ('LOH', 'Var', (72, 75)) ('neck paraganglioma', 'Disease', (42, 60)) ('SDHD', 'Gene', '6392', (83, 87)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (42, 60)) ('SDHD', 'Gene', (83, 87)) 98220 26008905 These mutations are inherited in a dominant manner with a parent of origin effect; typically only paternally inherited SDHD mutations are associated with HNPGL development (Hensen et al.). ('mutations', 'Var', (124, 133)) ('SDHD', 'Gene', '6392', (119, 123)) ('HNPGL', 'Disease', (154, 159)) ('associated', 'Reg', (138, 148)) ('SDHD', 'Gene', (119, 123)) 98221 26008905 Here, we report a neonate who presented prenatally with cardiomyopathy due to a novel homozygous SDHD mutation. ('cardiomyopathy', 'Disease', 'MESH:D009202', (56, 70)) ('SDHD', 'Gene', (97, 101)) ('mutation', 'Var', (102, 110)) ('cardiomyopathy', 'Disease', (56, 70)) ('SDHD', 'Gene', '6392', (97, 101)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (56, 70)) ('due to', 'Reg', (71, 77)) 98222 26008905 This is the second report of recessive SDHD mutations resulting in a primary mitochondrial disease presentation and serves to characterise the biochemical, histochemical and functional consequences of our patient's molecular genetic defect. ('mitochondrial disease', 'Disease', (77, 98)) ('SDHD', 'Gene', (39, 43)) ('SDHD', 'Gene', '6392', (39, 43)) ('mitochondrial disease', 'Disease', 'MESH:D028361', (77, 98)) ('mutations', 'Var', (44, 53)) ('patient', 'Species', '9606', (205, 212)) ('resulting in', 'Reg', (54, 66)) 98224 26008905 We have used the yeast, Saccharomyces cerevisiae, which has proven to be a useful model system to study the effects of SDHx gene mutations (Goffrini et al. ('Saccharomyces cerevisiae', 'Species', '4932', (24, 48)) ('SDHx', 'Chemical', '-', (119, 123)) ('mutations', 'Var', (129, 138)) ('SDHx', 'Gene', (119, 123)) ('yeast', 'Species', '4932', (17, 22)) 98225 26008905 ), to provide functional evidence supporting the pathogenicity of the SDHD mutation identified in our patient and, to a lesser extent, that of the PGL-associated p.Asp92Tyr mutation. ('SDHD', 'Gene', (70, 74)) ('SDHD', 'Gene', '6392', (70, 74)) ('p.Asp92Tyr', 'Mutation', 'rs80338845', (162, 172)) ('patient', 'Species', '9606', (102, 109)) ('p.Asp92Tyr', 'Var', (162, 172)) 98242 26008905 Resultant sequencing chromatograms were compared to the Genbank reference sequences: SDHA (NM_004168.2), SDHB (NM_003000.2), SDHC (NM_003001.3), SDHD (NM_003002.3), SDHAF1 (NM_001042631.2) and SDHAF2 (NM_017841.2). ('SDHA', 'Gene', '6389', (193, 197)) ('NM_003001.3', 'Var', (131, 142)) ('NM_001042631.2', 'Var', (173, 187)) ('SDHC', 'Gene', (125, 129)) ('NM_003002.3', 'Var', (151, 162)) ('SDHAF2', 'Gene', '54949', (193, 199)) ('SDHAF2', 'Gene', (193, 199)) ('SDHD', 'Gene', (145, 149)) ('SDHAF1', 'Gene', '644096', (165, 171)) ('NM_003000.2', 'Var', (111, 122)) ('SDHA', 'Gene', (165, 169)) ('SDHB', 'Gene', '6390', (105, 109)) ('SDHC', 'Gene', '6391', (125, 129)) ('SDHAF1', 'Gene', (165, 171)) ('SDHA', 'Gene', '6389', (165, 169)) ('SDHA', 'Gene', (85, 89)) ('SDHB', 'Gene', (105, 109)) ('SDHA', 'Gene', (193, 197)) ('SDHA', 'Gene', '6389', (85, 89)) ('SDHD', 'Gene', '6392', (145, 149)) 98243 26008905 The effect of the p.(Asp92Gly) substitution on SDHD function was predicted using the in silico tools SIFT (Ng and Henikoff), Align GVGD (Tavtigian et al.) ('SIFT', 'Disease', (101, 105)) ('SDHD', 'Gene', '6392', (47, 51)) ('p.(Asp92Gly', 'Var', (18, 29)) ('SDHD', 'Gene', (47, 51)) ('SIFT', 'Disease', 'None', (101, 105)) ('function', 'MPA', (52, 60)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (18, 30)) 98244 26008905 To determine whether the tertiary structure of the protein was affected by the mutation, the wild-type (NP_002993) and mutant SDHD protein sequences were input to PSIPRED (Jones) and I-TASSER (Yang et al. ('affected', 'Reg', (63, 71)) ('SDHD', 'Gene', (126, 130)) ('SDHD', 'Gene', '6392', (126, 130)) ('mutation', 'Var', (79, 87)) ('mutant', 'Var', (119, 125)) 98255 26008905 Media were solidified with 20 g/l agar (ForMediumTM) and strains were incubated at 28 or 37 C. The sdh4Asp98Gly and sdh4Asp98Tyr mutant alleles were obtained by site-directed mutagenesis using the overlap extension technique (Ho et al.). ('sdh4Asp98Tyr', 'Var', (117, 129)) ('sdh4Asp98Gly', 'Var', (100, 112)) ('agar', 'Chemical', 'MESH:D000362', (34, 38)) 98256 26008905 The mutagenized inserts were verified by sequencing and the pFL38 plasmid-borne SDH4 and SDH4 mutant alleles were transformed in the BY4741 using the lithium-acetate method (Gietz and Schiestl). ('SDH4', 'Gene', (80, 84)) ('lithium-acetate', 'Chemical', 'MESH:C488804', (150, 165)) ('mutant', 'Var', (94, 100)) ('SDH4', 'Gene', (89, 93)) ('BY4741', 'Species', '1247190', (133, 139)) 98266 26008905 Following identification of an isolated complex II deficiency, Sanger sequencing of all six SDHx genes was undertaken and a novel homozygous c.275A>G, p.(Asp92Gly) variant was identified in SDHD (ClinVar Reference ID: SCV000196921). ('SDHD', 'Gene', '6392', (190, 194)) ('isolated complex II deficiency', 'Disease', 'MESH:C565375', (31, 61)) ('SDHx', 'Chemical', '-', (92, 96)) ('c.275A>G', 'Var', (141, 149)) ('SDHx', 'Gene', (92, 96)) ('SDHD', 'Gene', (190, 194)) ('isolated complex II deficiency', 'Disease', (31, 61)) ('isolated complex II deficiency', 'Phenotype', 'HP:0008314', (31, 61)) ('c.275A>G', 'Mutation', 'rs786205436', (141, 149)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (151, 163)) 98267 26008905 Results from parental carrier testing were consistent with an autosomal recessive inheritance pattern, with each parent harbouring a heterozygous c.275A>G, p.(Asp92Gly) SDHD variant (Fig. ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (156, 168)) ('SDHD', 'Gene', '6392', (169, 173)) ('c.275A>G', 'Var', (146, 154)) ('SDHD', 'Gene', (169, 173)) ('c.275A>G', 'Mutation', 'rs786205436', (146, 154)) 98270 26008905 Whilst the c.275A>G, p.(Asp92Gly) SDHD variant has not been previously reported, another mutation affecting the same residue:c.274G>T, p.(Asp92Tyr):has been reported in association with familial PGL and PCC (Hensen et al.). ('p.(Asp92Tyr)', 'Mutation', 'rs80338845', (135, 147)) ('association', 'Reg', (169, 180)) ('residue:c.274G>T', 'Var', (117, 133)) ('c.275A>G', 'Mutation', 'rs786205436', (11, 19)) ('residue:c.274G>T', 'SUBSTITUTION', 'None', (117, 133)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (21, 33)) ('PCC', 'Gene', (203, 206)) ('SDHD', 'Gene', '6392', (34, 38)) ('familial PGL', 'Disease', (186, 198)) ('SDHD', 'Gene', (34, 38)) ('c.275A>G', 'Var', (11, 19)) ('PCC', 'Gene', '1421', (203, 206)) 98271 26008905 In silico predictions were strongly supportive of a deleterious effect; 100 % sensitivity and 100 % specificity were reported by SIFT and polyphen for both the p.(Asp92Gly) and p.(Asp92Tyr) variants. ('SIFT', 'Disease', 'None', (129, 133)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (160, 172)) ('polyphen', 'Chemical', '-', (138, 146)) ('p.(Asp92Tyr)', 'Mutation', 'rs80338845', (177, 189)) ('SIFT', 'Disease', (129, 133)) ('p.(Asp92Gly', 'Var', (160, 171)) ('p.(Asp92Tyr', 'Var', (177, 188)) 98272 26008905 Both variants were assigned an aGVGD class of C65 (highly likely to be detrimental to protein function):the p.(Asp92Gly) variant was reported to have a grantham difference (GD) value of 93.77, whilst the GD for the p.(Asp92Tyr) variant was 159.94 (GD > 70 is associated with C55/C65 variant classes). ('p.(Asp92Gly', 'Var', (108, 119)) ('C55/C65', 'Var', (275, 282)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (108, 120)) ('p.(Asp92Tyr)', 'Mutation', 'rs80338845', (215, 227)) 98276 26008905 The SDH4 gene is the yeast orthologue of human SDHD and although the human and yeast protein have a low degree of conservation (16 % identity and 36 % similarity) the p.Asp92 residue is conserved between the two species, corresponding to p.Asp98 in yeast (Fig. ('p.Asp92', 'Var', (167, 174)) ('yeast', 'Species', '4932', (249, 254)) ('SDHD', 'Gene', '6392', (47, 51)) ('human', 'Species', '9606', (41, 46)) ('human', 'Species', '9606', (69, 74)) ('yeast', 'Species', '4932', (79, 84)) ('yeast', 'Species', '4932', (21, 26)) ('SDHD', 'Gene', (47, 51)) ('Asp98', 'Chemical', '-', (240, 245)) ('SDH4', 'Gene', (4, 8)) ('Asp92', 'Chemical', '-', (169, 174)) ('p.Asp98', 'Var', (238, 245)) 98278 26008905 Since another mutation involving the same residue, p.(Asp92Tyr), has been reported as a cause of paraganglioma, a second mutant allele, sdh4D98Y, was also constructed to compare the phenotype between the two different amino acid substitutions. ('paraganglioma', 'Disease', 'MESH:D010235', (97, 110)) ('p.(Asp92Tyr', 'Var', (51, 62)) ('paraganglioma', 'Phenotype', 'HP:0002668', (97, 110)) ('p.(Asp92Tyr)', 'Mutation', 'rs80338845', (51, 63)) ('paraganglioma', 'Disease', (97, 110)) ('cause', 'Reg', (88, 93)) 98279 26008905 To test the possible effects on mitochondrial function, we first evaluated the oxidative growth by spot assay analysis on mineral medium supplemented with either glucose or ethanol, at 28 and 37 C. A clear growth defect was observed for the Deltasdh4/sdh4D98G strain in ethanol-containing plates incubated both at 28 and 37 C (Fig. ('ethanol', 'Chemical', 'MESH:D000431', (271, 278)) ('growth defect', 'Disease', (207, 220)) ('glucose', 'Chemical', 'MESH:D005947', (162, 169)) ('ethanol', 'Chemical', 'MESH:D000431', (173, 180)) ('growth defect', 'Disease', 'MESH:D006130', (207, 220)) ('Deltasdh4/sdh4D98G', 'Var', (242, 260)) 98282 26008905 The oxygen consumption rate of the Deltasdh4/sdh4D98G mutant was 55 % less than that of the parental strain Deltasdh4/SDH4 (Fig. ('Deltasdh4/sdh4D98G', 'Var', (35, 53)) ('oxygen', 'Chemical', 'MESH:D010100', (4, 10)) ('less', 'NegReg', (70, 74)) ('oxygen consumption rate', 'MPA', (4, 27)) 98284 26008905 Consistent with the results obtained from growth experiments the oxygen consumption rate of the Deltasdh4/sdh4D98Y mutant was not impaired (Fig. ('Deltasdh4/sdh4D98Y', 'Var', (96, 114)) ('oxygen', 'MPA', (65, 71)) ('oxygen', 'Chemical', 'MESH:D010100', (65, 71)) 98285 26008905 5a) but both SDH activities (PMS/DCPIP reductase and decylubiquinone reductase) were partially reduced (80 and 75 % residual activity) in Deltasdh4/sdh4D98Y mitochondria (Fig. ('activities', 'MPA', (17, 27)) ('SDH', 'Gene', (13, 16)) ('Deltasdh4/sdh4D98Y', 'Var', (138, 156)) ('SDH', 'Gene', '6390', (13, 16)) ('reduced', 'NegReg', (95, 102)) 98286 26008905 Together, these data support the pathogenicity of our patient's novel p.(Asp92Gly) SDHD variant. ('patient', 'Species', '9606', (54, 61)) ('p.(Asp92Gly', 'Var', (70, 81)) ('SDHD', 'Gene', '6392', (83, 87)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (70, 82)) ('SDHD', 'Gene', (83, 87)) 98291 26008905 Sequencing the genes involved in succinate dehydrogenase structure and assembly was undertaken and revealed a novel homozygous c.275A>G, p.(Asp92Gly) SDHD mutation which was shown to be recessively inherited through segregation studies. ('c.275A>G', 'Mutation', 'rs786205436', (127, 135)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (137, 149)) ('SDHD', 'Gene', '6392', (150, 154)) ('c.275A>G', 'Var', (127, 135)) ('succinate dehydrogenase', 'Gene', (33, 56)) ('succinate dehydrogenase', 'Gene', '6390', (33, 56)) ('SDHD', 'Gene', (150, 154)) 98292 26008905 Patients with an isolated complex II deficiency harbour either compound heterozygous or homozygous mutations in an SDH structural or assembly factor gene. ('isolated complex II deficiency', 'Disease', (17, 47)) ('compound heterozygous', 'Var', (63, 84)) ('isolated complex II deficiency', 'Phenotype', 'HP:0008314', (17, 47)) ('SDH', 'Gene', '6390', (115, 118)) ('Patients', 'Species', '9606', (0, 8)) ('SDH', 'Gene', (115, 118)) ('isolated complex II deficiency', 'Disease', 'MESH:C565375', (17, 47)) 98295 26008905 Although the published cohort of patients with complex II deficiency is small, mutations which affect the ability of complex II to bind to the mitochondrial membrane are evolving to be the most deleterious. ('complex II deficiency', 'Disease', 'MESH:C565375', (47, 68)) ('patients', 'Species', '9606', (33, 41)) ('bind', 'Interaction', (131, 135)) ('complex II deficiency', 'Disease', (47, 68)) ('mutations', 'Var', (79, 88)) 98296 26008905 The only other SDHD-deficient patient reported in the literature harboured compound heterozygous variants, one missense and one that extended the protein by three amino acids (Jackson et al.). ('patient', 'Species', '9606', (30, 37)) ('SDHD-deficient', 'Disease', (15, 29)) ('extended', 'PosReg', (133, 141)) ('missense', 'Var', (111, 119)) ('protein', 'Protein', (146, 153)) ('SDHD-deficient', 'Disease', 'MESH:D007153', (15, 29)) 98301 26008905 We hypothesised that the p.(Asp92Gly) variant might have caused a conformational change given the location of the conserved acidic p.Asp92 residue at the N-terminus of one of the protein's helical domains. ('p.(Asp92Gly', 'Var', (25, 36)) ('Asp92', 'Chemical', '-', (28, 33)) ('conformational change', 'MPA', (66, 87)) ('caused', 'Reg', (57, 63)) ('p.Asp92', 'Var', (131, 138)) ('Asp92', 'Chemical', '-', (133, 138)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (25, 37)) 98302 26008905 With this in mind, we modelled the predicted impact of the patient's p.(Asp92Gly) SDHD mutation on tertiary structure using in silico methodologies. ('p.(Asp92Gly', 'Var', (69, 80)) ('patient', 'Species', '9606', (59, 66)) ('SDHD', 'Gene', '6392', (82, 86)) ('SDHD', 'Gene', (82, 86)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (69, 81)) 98303 26008905 Contrary to our expectations, neither I-TASSER nor PSIPRED predicted gross tertiary structural anomalies due to the substitution, despite being situated between two conserved cysteine residues; the pathogenicity is therefore assumed to lie in the nature of the amino acid properties as opposed to consequential protein misfolding. ('cysteine', 'Chemical', 'MESH:D003545', (175, 183)) ('anomalies', 'Disease', 'MESH:D000014', (95, 104)) ('substitution', 'Var', (116, 128)) ('anomalies', 'Disease', (95, 104)) 98305 26008905 Moreover, the location of the substitution may also be important in capping the positive helical dipole, and replacement with a non-polar residue such as glycine would fail to provide the same charge stabilization. ('glycine', 'Chemical', 'MESH:D005998', (154, 161)) ('dipole', 'Chemical', '-', (97, 103)) ('capping the positive helical dipole', 'MPA', (68, 103)) ('substitution', 'Var', (30, 42)) 98306 26008905 Mutations in SDHD and other SDHx genes have been implicated not only in primary metabolic dysfunction, but also as drivers of neoplastic transformation in various tumour types. ('metabolic dysfunction', 'Disease', 'MESH:D008659', (80, 101)) ('tumour', 'Phenotype', 'HP:0002664', (163, 169)) ('SDHD', 'Gene', (13, 17)) ('SDHD', 'Gene', '6392', (13, 17)) ('Mutations', 'Var', (0, 9)) ('SDHx', 'Gene', (28, 32)) ('metabolic dysfunction', 'Disease', (80, 101)) ('SDHx', 'Chemical', '-', (28, 32)) ('tumour', 'Disease', 'MESH:D009369', (163, 169)) ('implicated', 'Reg', (49, 59)) ('tumour', 'Disease', (163, 169)) 98307 26008905 There is a wealth of information in the literature describing the involvement of SDHx gene mutations in cases of hereditary and sporadic cancers including head and neck paraganglioma, pheochromocytoma and gastrointestinal stromal tumours (Miettinen and Lasota). ('cancer', 'Phenotype', 'HP:0002664', (137, 143)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (155, 182)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (184, 200)) ('tumour', 'Phenotype', 'HP:0002664', (230, 236)) ('pheochromocytoma and gastrointestinal stromal tumours', 'Disease', 'MESH:D046152', (184, 237)) ('SDHx', 'Chemical', '-', (81, 85)) ('tumours', 'Phenotype', 'HP:0002664', (230, 237)) ('SDHx', 'Gene', (81, 85)) ('cancers', 'Phenotype', 'HP:0002664', (137, 144)) ('hereditary and sporadic cancers', 'Disease', 'MESH:D009369', (113, 144)) ('neck paraganglioma', 'Disease', (164, 182)) ('mutations', 'Var', (91, 100)) ('involvement', 'Reg', (66, 77)) ('paraganglioma', 'Phenotype', 'HP:0002668', (169, 182)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (164, 182)) 98313 26008905 To date, mutations reported in the SDHx genes are loss of function, either as tumour suppressors or in metabolic enzymes. ('tumour', 'Phenotype', 'HP:0002664', (78, 84)) ('tumour', 'Disease', 'MESH:D009369', (78, 84)) ('mutations', 'Var', (9, 18)) ('tumour', 'Disease', (78, 84)) ('loss of function', 'NegReg', (50, 66)) ('SDHx', 'Chemical', '-', (35, 39)) ('SDHx', 'Gene', (35, 39)) 98314 26008905 The mutation harboured by our patient transcends these fields in that, although manifesting as a primary metabolic condition in our case, the p.Asp92 residue is recognised as a Dutch founder HNPGL mutation, p.(Asp92Tyr). ('p.(Asp92Tyr)', 'Mutation', 'rs80338845', (207, 219)) ('Asp92', 'Chemical', '-', (144, 149)) ('patient', 'Species', '9606', (30, 37)) ('Asp92', 'Chemical', '-', (210, 215)) ('p.Asp92', 'Var', (142, 149)) ('p.(Asp92Tyr', 'Var', (207, 218)) 98320 26008905 The SDHD residue p.Asp92 shows high evolutionary conservation and corresponds to p.Asp98 in yeast. ('yeast', 'Species', '4932', (92, 97)) ('p.Asp92', 'Var', (17, 24)) ('Asp98', 'Chemical', '-', (83, 88)) ('SDHD', 'Gene', (4, 8)) ('SDHD', 'Gene', '6392', (4, 8)) ('Asp92', 'Chemical', '-', (19, 24)) 98321 26008905 Given that a germline mutation involving the same amino acid has been reported as a cause of paraganglioma [p.(Asp92Tyr)], two mutant alleles:sdh4D98G and sdh4D98Y:were constructed to compare the phenotypes associated with the different substitutions. ('sdh4D98G', 'Var', (142, 150)) ('paraganglioma', 'Disease', 'MESH:D010235', (93, 106)) ('paraganglioma', 'Phenotype', 'HP:0002668', (93, 106)) ('sdh4D98Y', 'Var', (155, 163)) ('paraganglioma', 'Disease', (93, 106)) ('p.(Asp92Tyr)', 'Mutation', 'rs80338845', (108, 120)) ('cause', 'Reg', (84, 89)) 98322 26008905 Consistent with the reduction of SDHD steady-state levels and fully assembled complex II found in our patient, the p.(Asp92Gly) mutation was detrimental to both oxidative growth and succinate dehydrogenase activity in yeast. ('yeast', 'Species', '4932', (218, 223)) ('SDHD', 'Gene', '6392', (33, 37)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (115, 127)) ('succinate dehydrogenase', 'Gene', '6390', (182, 205)) ('patient', 'Species', '9606', (102, 109)) ('SDHD', 'Gene', (33, 37)) ('succinate dehydrogenase', 'Gene', (182, 205)) ('oxidative growth', 'MPA', (161, 177)) ('p.(Asp92Gly', 'Var', (115, 126)) ('detrimental', 'NegReg', (141, 152)) 98323 26008905 Contrariwise, the p.(Asp98Tyr) HNPGL-associated substitution did not affect oxidative growth and showed a mild, albeit significant, reduction of SDH activity. ('oxidative growth', 'MPA', (76, 92)) ('p.(Asp98Tyr)', 'SUBSTITUTION', 'None', (18, 30)) ('SDH', 'Gene', '6390', (145, 148)) ('HNPGL-associated', 'Gene', (31, 47)) ('reduction', 'NegReg', (132, 141)) ('p.(Asp98Tyr', 'Var', (18, 29)) ('SDH', 'Gene', (145, 148)) 98324 26008905 Altogether the results obtained in the yeast model provide compelling functional evidence supporting the pathogenic role of the p.(Asp92Gly) mutation and show that this substitution conveys a more severe phenotype than the founder HNPGL SDHD mutation, this finding is not unique as other PGL-associated SDHD mutations were found to cause a milder phenotype when modelled in yeast (Panizza et al.). ('SDHD', 'Gene', (237, 241)) ('substitution', 'Var', (169, 181)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (128, 140)) ('yeast', 'Species', '4932', (39, 44)) ('yeast', 'Species', '4932', (374, 379)) ('SDHD', 'Gene', '6392', (303, 307)) ('SDHD', 'Gene', '6392', (237, 241)) ('mutation', 'Var', (141, 149)) ('SDHD', 'Gene', (303, 307)) 98325 26008905 Whilst our modelling suggests that the well-characterised p.(Asp92Tyr) PGL mutation is associated with what might be considered a mild phenotype in yeast, the phenotype in question is not a primary metabolic one and indeed it is only associated with oncogenesis in tandem with a second mutation, which is often a large-scale deletion or other null allele. ('associated', 'Reg', (234, 244)) ('p.(Asp92Tyr', 'Var', (58, 69)) ('oncogenesis', 'Disease', (250, 261)) ('PGL', 'Gene', (71, 74)) ('p.(Asp92Tyr)', 'Mutation', 'rs80338845', (58, 70)) ('yeast', 'Species', '4932', (148, 153)) 98327 26008905 We previously reported inherited recessive SDHB mutations in association with a paediatric primary mitochondrial phenotype and this case also lacked a history of hereditary cancer (Alston et al.). ('hereditary cancer', 'Disease', 'MESH:D009369', (162, 179)) ('SDHB', 'Gene', '6390', (43, 47)) ('association', 'Reg', (61, 72)) ('hereditary cancer', 'Disease', (162, 179)) ('SDHB', 'Gene', (43, 47)) ('cancer', 'Phenotype', 'HP:0002664', (173, 179)) ('mutations', 'Var', (48, 57)) 98328 26008905 It is unclear whether germline carriers of the p.(Asp92Gly) SDHD mutation are at elevated risk of HNPGL and despite no tumours having been reported in the family, it is the opinion of their clinicians that surveillance was advisable and is ongoing. ('tumour', 'Phenotype', 'HP:0002664', (119, 125)) ('HNPGL', 'Disease', (98, 103)) ('tumours', 'Phenotype', 'HP:0002664', (119, 126)) ('SDHD', 'Gene', '6392', (60, 64)) ('SDHD', 'Gene', (60, 64)) ('tumours', 'Disease', 'MESH:D009369', (119, 126)) ('p.(Asp92Gly)', 'Mutation', 'rs786205436', (47, 59)) ('tumours', 'Disease', (119, 126)) ('p.(Asp92Gly', 'Var', (47, 58)) 98332 26008905 and has also been observed in other mitochondrial disorders including those due to mutations in mtDNA (Pignatelli et al.). ('mitochondrial disorders', 'Disease', (36, 59)) ('mutations', 'Var', (83, 92)) ('mtDNA', 'Gene', (96, 101)) ('mitochondrial disorders', 'Disease', 'MESH:D028361', (36, 59)) ('observed', 'Reg', (18, 26)) ('due', 'Reg', (76, 79)) 98338 25918656 A final diagnosis of undifferentiated adrenal malignant tumor was rendered, instead of histologically malignant pheochromocytoma, despite the uptake of 123I-MIBG demonstrated by scintigraphy. ('adrenal malignant tumor', 'Phenotype', 'HP:0100631', (38, 61)) ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('uptake', 'MPA', (142, 148)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (102, 128)) ('malignant pheochromocytoma', 'Disease', (102, 128)) ('tumor', 'Disease', (56, 61)) ('adrenal malignant tumor', 'Disease', 'MESH:D000310', (38, 61)) ('123I-MIBG', 'Var', (152, 161)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (112, 128)) ('tumor', 'Disease', 'MESH:D009369', (56, 61)) ('adrenal malignant tumor', 'Disease', (38, 61)) 98341 25918656 Pheochromocytoma results in hypertension in 0.5% of patients and adrenal incidentaloma in 4% of cases; approximately 24% of neuroendocrine tumors are related to gene mutations associated with a hereditary syndrome. ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (124, 144)) ('hypertension', 'Disease', 'MESH:D006973', (28, 40)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (124, 145)) ('hypertension', 'Disease', (28, 40)) ('gene mutations', 'Var', (161, 175)) ('neuroendocrine tumor', 'Disease', 'MESH:D018358', (124, 144)) ('adrenal incidentaloma', 'Disease', (65, 86)) ('hereditary syndrome', 'Disease', (194, 213)) ('tumors', 'Phenotype', 'HP:0002664', (139, 145)) ('hypertension', 'Phenotype', 'HP:0000822', (28, 40)) ('hereditary syndrome', 'Disease', 'MESH:D009386', (194, 213)) ('neuroendocrine tumors', 'Disease', (124, 145)) ('patients', 'Species', '9606', (52, 60)) ('adrenal incidentaloma', 'Disease', 'MESH:C538238', (65, 86)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('tumor', 'Phenotype', 'HP:0002664', (139, 144)) ('Pheochromocytoma results in hypertension', 'Phenotype', 'HP:0002640', (0, 40)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('Pheochromocytoma', 'Disease', (0, 16)) ('related', 'Reg', (150, 157)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (124, 145)) 98346 25918656 A comprehensive metabolic blood panel revealed a low albumin level of 2.5 g/dL, low sodium of 130 mEq/L, increased AST/ALT of 131/117 IU/L, and increased alkaline phosphatase of 539 IU/L. ('sodium', 'Chemical', 'MESH:D012964', (84, 90)) ('increased', 'PosReg', (144, 153)) ('low', 'Var', (80, 83)) ('increased alkaline phosphatase', 'Phenotype', 'HP:0003155', (144, 174)) ('albumin level', 'MPA', (53, 66)) ('AST', 'Gene', (115, 118)) ('AST', 'Gene', '26503', (115, 118)) ('low', 'NegReg', (49, 52)) ('low sodium', 'Phenotype', 'HP:0002902', (80, 90)) ('low albumin', 'Phenotype', 'HP:0003073', (49, 60)) ('increased', 'PosReg', (105, 114)) ('alkaline phosphatase', 'MPA', (154, 174)) 98366 25918656 For example, neuroendocrine tumors with origins other than a chromaffin neuroendocrine tumor, medullary thyroid carcinoma, and carcinoid tumors can all show uptake of 123I-MIBG, which is believed to occur via intracellular granules through their respective amine uptake mechanisms. ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (13, 34)) ('tumor', 'Phenotype', 'HP:0002664', (87, 92)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (104, 121)) ('carcinoma', 'Phenotype', 'HP:0030731', (112, 121)) ('carcinoid tumors', 'Disease', 'MESH:D002276', (127, 143)) ('tumors', 'Phenotype', 'HP:0002664', (28, 34)) ('neuroendocrine tumors', 'Disease', (13, 34)) ('carcinoid tumors', 'Disease', (127, 143)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) ('chromaffin neuroendocrine tumor', 'Phenotype', 'HP:0002666', (61, 92)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (104, 121)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (94, 121)) ('123I-MIBG', 'Var', (167, 176)) ('tumors', 'Phenotype', 'HP:0002664', (137, 143)) ('carcinoid', 'Phenotype', 'HP:0100570', (127, 136)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (72, 92)) ('thyroid carcinoma', 'Disease', (104, 121)) ('uptake', 'MPA', (157, 163)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (13, 33)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) 98372 25694510 Germline and somatic SDHx alterations in apparently sporadic differentiated thyroid cancer Along with breast and endometrial cancers, thyroid cancer is a major component cancer in Cowden syndrome (CS). ('thyroid cancer', 'Disease', (76, 90)) ('SDHx', 'Chemical', '-', (21, 25)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (134, 148)) ('cancer', 'Phenotype', 'HP:0002664', (170, 176)) ('Cowden syndrome', 'Disease', 'MESH:D006223', (180, 195)) ('component cancer', 'Disease', (160, 176)) ('component cancer', 'Disease', 'MESH:D009369', (160, 176)) ('alterations', 'Var', (26, 37)) ('thyroid cancer', 'Disease', 'MESH:D013964', (76, 90)) ('Cowden syndrome', 'Disease', (180, 195)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (76, 90)) ('cancer', 'Phenotype', 'HP:0002664', (125, 131)) ('cancer', 'Phenotype', 'HP:0002664', (142, 148)) ('thyroid cancer', 'Disease', (134, 148)) ('cancer', 'Phenotype', 'HP:0002664', (84, 90)) ('cancers', 'Phenotype', 'HP:0002664', (125, 132)) ('breast and endometrial cancers', 'Disease', 'MESH:D016889', (102, 132)) ('SDHx', 'Gene', (21, 25)) ('thyroid cancer', 'Disease', 'MESH:D013964', (134, 148)) 98373 25694510 Germline variants in SDHB/C/D (SDHx) genes account for subsets of CS/CS-like cases, conferring a higher risk of breast and thyroid cancers over those with only germline PTEN mutations. ('cancers', 'Phenotype', 'HP:0002664', (131, 138)) ('SDHx', 'Chemical', '-', (31, 35)) ('PTEN', 'Gene', (169, 173)) ('cancer', 'Phenotype', 'HP:0002664', (131, 137)) ('PTEN', 'Gene', '5728', (169, 173)) ('SDHB', 'Gene', '6390', (21, 25)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (123, 137)) ('variants', 'Var', (9, 17)) ('CS/CS-like', 'Disease', (66, 76)) ('SDHB', 'Gene', (21, 25)) ('breast and thyroid cancers', 'Disease', 'MESH:D013964', (112, 138)) 98376 25694510 As germline SDHx variants were found in our pilot of 48 thyroid cancer cases, we expanded to three series of DTC comprising a total 754 cases, and found 48 (6%) with germline SDHx variants (P<0.001 compared with 0/350 controls). ('SDHx', 'Gene', (12, 16)) ('variants', 'Var', (17, 25)) ('SDHx', 'Chemical', '-', (12, 16)) ('thyroid cancer', 'Disease', 'MESH:D013964', (56, 70)) ('DTC', 'Chemical', '-', (109, 112)) ('SDHx', 'Gene', (175, 179)) ('SDHx', 'Chemical', '-', (175, 179)) ('variants', 'Var', (180, 188)) ('found', 'Reg', (31, 36)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (56, 70)) ('thyroid cancer', 'Disease', (56, 70)) ('cancer', 'Phenotype', 'HP:0002664', (64, 70)) 98379 25694510 Therefore, we conclude that both germline and somatic SDHx mutations/variants occur in sporadic DTC but are very rare in sporadic breast cancer, and overall loss of SDHx gene expression is a signature of DTC. ('cancer', 'Phenotype', 'HP:0002664', (137, 143)) ('DTC', 'Disease', (96, 99)) ('breast cancer', 'Disease', (130, 143)) ('expression', 'MPA', (175, 185)) ('SDHx', 'Gene', (54, 58)) ('DTC', 'Chemical', '-', (204, 207)) ('breast cancer', 'Phenotype', 'HP:0003002', (130, 143)) ('SDHx', 'Chemical', '-', (54, 58)) ('breast cancer', 'Disease', 'MESH:D001943', (130, 143)) ('SDHx', 'Chemical', '-', (165, 169)) ('SDHx', 'Gene', (165, 169)) ('mutations/variants', 'Var', (59, 77)) ('DTC', 'Chemical', '-', (96, 99)) ('loss', 'NegReg', (157, 161)) ('occur', 'Reg', (78, 83)) 98382 25694510 Germline homozygous or compound heterozygous mutations in SDHA result in severe neurological dysfunction, such as Leigh syndrome, a rare but fatal neurodegenerative disease. ('SDHA', 'Gene', '6389', (58, 62)) ('neurodegenerative disease', 'Disease', 'MESH:D019636', (147, 172)) ('compound heterozygous mutations', 'Var', (23, 54)) ('neurological dysfunction', 'Disease', 'MESH:D009422', (80, 104)) ('neurodegenerative disease', 'Disease', (147, 172)) ('Leigh syndrome', 'Disease', (114, 128)) ('SDHA', 'Gene', (58, 62)) ('severe neurological dysfunction', 'Phenotype', 'HP:0002344', (73, 104)) ('neurodegenerative disease', 'Phenotype', 'HP:0002180', (147, 172)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (114, 128)) ('result in', 'Reg', (63, 72)) ('neurological dysfunction', 'Disease', (80, 104)) 98383 25694510 In contrast, germline heterozygous mutations in the genes encoding the SDH subunits result in hereditary pheochromocytoma-paraganglioma syndrome. ('SDH', 'Gene', (71, 74)) ('paraganglioma', 'Phenotype', 'HP:0002668', (122, 135)) ('germline heterozygous mutations', 'Var', (13, 44)) ('result in', 'Reg', (84, 93)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (105, 121)) ('SDH', 'Gene', '6390', (71, 74)) ('hereditary pheochromocytoma-paraganglioma syndrome', 'Disease', (94, 144)) ('hereditary pheochromocytoma-paraganglioma syndrome', 'Disease', 'MESH:D010673', (94, 144)) 98384 25694510 It was noticed that a rare subset of individuals with germline SDHB or SDHD mutations in the European-American pheochromocytoma registry had renal cancers and papillary thyroid cancer (PTC). ('SDHB', 'Gene', (63, 67)) ('pheochromocytoma', 'Disease', (111, 127)) ('mutations', 'Var', (76, 85)) ('cancer', 'Phenotype', 'HP:0002664', (147, 153)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (111, 127)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (169, 183)) ('SDHD', 'Gene', '6392', (71, 75)) ('renal cancers', 'Disease', 'MESH:D007680', (141, 154)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (111, 127)) ('renal cancers', 'Disease', (141, 154)) ('SDHD', 'Gene', (71, 75)) ('papillary thyroid cancer', 'Disease', (159, 183)) ('papillary thyroid cancer', 'Disease', 'MESH:D000077273', (159, 183)) ('cancers', 'Phenotype', 'HP:0002664', (147, 154)) ('cancer', 'Phenotype', 'HP:0002664', (177, 183)) ('SDHB', 'Gene', '6390', (63, 67)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (159, 183)) 98386 25694510 Because epithelial thyroid, breast, and renal carcinomas are component to CS, we wanted to determine whether germline SDHB/C/D (SDHx) variants could also occur in PTEN (MIM 601728) mutation-negative CS/CS-like individuals. ('SDHB', 'Gene', '6390', (118, 122)) ('variants', 'Var', (134, 142)) ('carcinoma', 'Phenotype', 'HP:0030731', (46, 55)) ('renal carcinomas', 'Disease', (40, 56)) ('PTEN', 'Gene', (163, 167)) ('SDHB', 'Gene', (118, 122)) ('PTEN', 'Gene', '5728', (163, 167)) ('carcinomas', 'Phenotype', 'HP:0030731', (46, 56)) ('CS/CS-like', 'Disease', (199, 209)) ('renal carcinomas', 'Phenotype', 'HP:0005584', (40, 56)) ('SDHx', 'Chemical', '-', (128, 132)) ('renal carcinomas', 'Disease', 'MESH:C538614', (40, 56)) 98387 25694510 Indeed, we found 8-10% of such patients carry SDHx mutations. ('patients', 'Species', '9606', (31, 39)) ('SDHx', 'Chemical', '-', (46, 50)) ('mutations', 'Var', (51, 60)) ('SDHx', 'Gene', (46, 50)) 98388 25694510 CS/CS-like individuals with germline SDHx variants have significantly higher risks of developing breast cancer and epithelial thyroid cancer compared with PTEN mutation-only carriers. ('PTEN', 'Gene', (155, 159)) ('SDHx', 'Chemical', '-', (37, 41)) ('PTEN', 'Gene', '5728', (155, 159)) ('cancer', 'Phenotype', 'HP:0002664', (104, 110)) ('SDHx', 'Gene', (37, 41)) ('variants', 'Var', (42, 50)) ('epithelial thyroid cancer', 'Disease', (115, 140)) ('breast cancer', 'Disease', 'MESH:D001943', (97, 110)) ('epithelial thyroid cancer', 'Disease', 'MESH:D013964', (115, 140)) ('breast cancer', 'Phenotype', 'HP:0003002', (97, 110)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (126, 140)) ('breast cancer', 'Disease', (97, 110)) ('cancer', 'Phenotype', 'HP:0002664', (134, 140)) 98389 25694510 Among all SDHx variant carriers with thyroid cancer in CS/CS-like cases, papillary histology is the major subtype in contrast to the over-presentation of follicular histology in PTEN mutation carriers. ('PTEN', 'Gene', (178, 182)) ('PTEN', 'Gene', '5728', (178, 182)) ('papillary histology', 'Phenotype', 'HP:0007482', (73, 92)) ('cancer', 'Phenotype', 'HP:0002664', (45, 51)) ('variant', 'Var', (15, 22)) ('thyroid cancer', 'Disease', (37, 51)) ('papillary histology', 'Disease', (73, 92)) ('SDHx', 'Gene', (10, 14)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (37, 51)) ('SDHx', 'Chemical', '-', (10, 14)) ('thyroid cancer', 'Disease', 'MESH:D013964', (37, 51)) 98392 25694510 It is worth noting that, in addition to the rising incident in thyroid cancer among all cancers, almost all of the increase is in the papillary histology subtype, the subtype we observed associated with SDHx variations in CS. ('thyroid cancer', 'Disease', (63, 77)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (63, 77)) ('cancers', 'Disease', 'MESH:D009369', (88, 95)) ('thyroid cancer', 'Disease', 'MESH:D013964', (63, 77)) ('cancers', 'Phenotype', 'HP:0002664', (88, 95)) ('cancers', 'Disease', (88, 95)) ('papillary histology', 'Phenotype', 'HP:0007482', (134, 153)) ('variations', 'Var', (208, 218)) ('SDHx', 'Gene', (203, 207)) ('associated', 'Reg', (187, 197)) ('cancer', 'Phenotype', 'HP:0002664', (88, 94)) ('SDHx', 'Chemical', '-', (203, 207)) ('cancer', 'Phenotype', 'HP:0002664', (71, 77)) ('papillary histology', 'Disease', (134, 153)) 98393 25694510 Taking all these observations together, we sought to address the hypothesis that alterations in SDHx at both germline and somatic levels may also occur in apparently sporadic breast cancer and differentiated thyroid cancer (DTC). ('cancer', 'Phenotype', 'HP:0002664', (182, 188)) ('breast cancer', 'Disease', 'MESH:D001943', (175, 188)) ('breast cancer', 'Phenotype', 'HP:0003002', (175, 188)) ('cancer', 'Phenotype', 'HP:0002664', (216, 222)) ('breast cancer', 'Disease', (175, 188)) ('differentiated thyroid cancer', 'Disease', 'MESH:D013964', (193, 222)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (208, 222)) ('SDHx', 'Gene', (96, 100)) ('occur', 'Reg', (146, 151)) ('alterations', 'Var', (81, 92)) ('SDHx', 'Chemical', '-', (96, 100)) ('DTC', 'Chemical', '-', (224, 227)) ('differentiated thyroid cancer', 'Disease', (193, 222)) 98413 25694510 Breast cancer and thyroid cancer are major malignancies associated with CS/CSL; SDHx variant carriers show significantly increased prevalence of both breast and thyroid cancers compared with PTEN mutation carriers. ('Breast cancer', 'Phenotype', 'HP:0003002', (0, 13)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (18, 32)) ('CSL', 'Gene', (75, 78)) ('cancer', 'Phenotype', 'HP:0002664', (169, 175)) ('cancer', 'Phenotype', 'HP:0002664', (26, 32)) ('breast and thyroid cancers', 'Disease', 'MESH:D013964', (150, 176)) ('thyroid cancer', 'Disease', (161, 175)) ('cancer', 'Phenotype', 'HP:0002664', (7, 13)) ('thyroid cancer', 'Disease', (18, 32)) ('increased', 'PosReg', (121, 130)) ('PTEN', 'Gene', (191, 195)) ('variant', 'Var', (85, 92)) ('CSL', 'Gene', '1444', (75, 78)) ('SDHx', 'Gene', (80, 84)) ('thyroid cancer', 'Disease', 'MESH:D013964', (161, 175)) ('Breast cancer', 'Disease', 'MESH:D001943', (0, 13)) ('PTEN', 'Gene', '5728', (191, 195)) ('thyroid cancer', 'Disease', 'MESH:D013964', (18, 32)) ('Breast cancer', 'Disease', (0, 13)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (161, 175)) ('SDHx', 'Chemical', '-', (80, 84)) ('cancers', 'Phenotype', 'HP:0002664', (169, 176)) 98414 25694510 Therefore, we sought to determine whether SDHx alleles also associate with apparently sporadic breast cancer cases and in apparently sporadic thyroid cancer cases. ('alleles', 'Var', (47, 54)) ('cancer', 'Phenotype', 'HP:0002664', (102, 108)) ('breast cancer', 'Disease', (95, 108)) ('breast cancer', 'Phenotype', 'HP:0003002', (95, 108)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (142, 156)) ('thyroid cancer', 'Disease', (142, 156)) ('SDHx', 'Gene', (42, 46)) ('thyroid cancer', 'Disease', 'MESH:D013964', (142, 156)) ('associate', 'Reg', (60, 69)) ('SDHx', 'Chemical', '-', (42, 46)) ('cancer', 'Phenotype', 'HP:0002664', (150, 156)) ('breast cancer', 'Disease', 'MESH:D001943', (95, 108)) 98416 25694510 This sample size gave us >80% power to detect a 5% prevalence of SDHx variants. ('variants', 'Var', (70, 78)) ('SDHx', 'Chemical', '-', (65, 69)) ('SDHx', 'Gene', (65, 69)) 98418 25694510 When our pilot of 48 apparently sporadic DTC samples revealed germline variation in SDHB and SDHD, we expanded our series to a total of 241 unrelated PTEN mutation negative research participants with differentiated thyroid carcinoma from The Ohio State University's (OSU) Thyroid Center. ('SDHD', 'Gene', (93, 97)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (215, 232)) ('SDHB', 'Gene', '6390', (84, 88)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (215, 232)) ('thyroid carcinoma', 'Disease', (215, 232)) ('germline variation', 'Var', (62, 80)) ('participants', 'Species', '9606', (182, 194)) ('SDHB', 'Gene', (84, 88)) ('DTC', 'Chemical', '-', (41, 44)) ('mutation', 'Var', (155, 163)) ('PTEN', 'Gene', (150, 154)) ('SDHD', 'Gene', '6392', (93, 97)) ('PTEN', 'Gene', '5728', (150, 154)) ('carcinoma', 'Phenotype', 'HP:0030731', (223, 232)) 98419 25694510 Of the 241, we found 15 (6%) with SDHB/D missense variants (P<0.001 compared with 0/350 controls), six in SDHB (Ala3Gly (n=1), and Ser163Pro (n=5)), and nine in SDHD (Gly12Ser (n=6) and His50Arg (n=3)) (Table 1). ('Ala3Gly', 'Var', (112, 119)) ('His50Arg', 'SUBSTITUTION', 'None', (186, 194)) ('Ser163Pro', 'SUBSTITUTION', 'None', (131, 140)) ('SDHB', 'Gene', '6390', (106, 110)) ('missense variants', 'Var', (41, 58)) ('SDHD', 'Gene', (161, 165)) ('Gly12Ser', 'SUBSTITUTION', 'None', (167, 175)) ('SDHB', 'Gene', (34, 38)) ('SDHB', 'Gene', '6390', (34, 38)) ('Gly12Ser', 'Var', (167, 175)) ('Ser163Pro', 'Var', (131, 140)) ('SDHB', 'Gene', (106, 110)) ('SDHD', 'Gene', '6392', (161, 165)) ('Ala3Gly', 'SUBSTITUTION', 'None', (112, 119)) ('His50Arg', 'Var', (186, 194)) 98420 25694510 Consistent with what we observed in our CS/CSL series, the SDHD variants comprise the major proportion (9/15, 60%) of all variants. ('SDHD', 'Gene', '6392', (59, 63)) ('CSL', 'Gene', (43, 46)) ('CSL', 'Gene', '1444', (43, 46)) ('SDHD', 'Gene', (59, 63)) ('variants', 'Var', (64, 72)) 98421 25694510 In order to further confirm our findings, we used the TCGA thyroid cancer (THCA) dataset composed mainly of PTC samples as a validation series for germline SDHx variation. ('variation', 'Var', (161, 170)) ('thyroid cancer', 'Disease', 'MESH:D013964', (59, 73)) ('cancer', 'Phenotype', 'HP:0002664', (67, 73)) ('SDHx', 'Chemical', '-', (156, 160)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (59, 73)) ('thyroid cancer', 'Disease', (59, 73)) 98422 25694510 Of all 476 TCGA PTC patients who had WGS/WES .bam files from peripheral blood-derived DNA, a total of 28 (6%) had germline SDHx variants, with 13 in SDHB (Ala3Gly: n=1, Gly53Glu: n=1, Thr60Ala n=1, Asp142Val n=1, and Ser163Pro: n=9) and 15 in SDHD (Gly12Ser: n=10 and His50Arg: n=5) (Table 1). ('Ser163Pro', 'SUBSTITUTION', 'None', (217, 226)) ('SDHx', 'Gene', (123, 127)) ('Ser163Pro', 'Var', (217, 226)) ('Asp142Val', 'SUBSTITUTION', 'None', (198, 207)) ('Gly12Ser', 'SUBSTITUTION', 'None', (249, 257)) ('Gly12Ser', 'Var', (249, 257)) ('SDHB', 'Gene', '6390', (149, 153)) ('Ala3Gly', 'SUBSTITUTION', 'None', (155, 162)) ('SDHx', 'Chemical', '-', (123, 127)) ('variants', 'Var', (128, 136)) ('patients', 'Species', '9606', (20, 28)) ('His50Arg', 'Var', (268, 276)) ('Gly53Glu', 'Var', (169, 177)) ('SDHB', 'Gene', (149, 153)) ('Ala3Gly', 'Var', (155, 162)) ('SDHD', 'Gene', '6392', (243, 247)) ('Thr60Ala', 'Var', (184, 192)) ('Thr60Ala', 'SUBSTITUTION', 'None', (184, 192)) ('Asp142Val', 'Var', (198, 207)) ('WGS', 'Disease', 'None', (37, 40)) ('His50Arg', 'SUBSTITUTION', 'None', (268, 276)) ('WGS', 'Disease', (37, 40)) ('Gly53Glu', 'SUBSTITUTION', 'None', (169, 177)) ('SDHD', 'Gene', (243, 247)) 98425 25694510 We performed mutation analysis of the SDHx genes in 37 pairs of apparently sporadic epithelial thyroid carcinomas with adjacent normal tissue from CHTN. ('carcinomas', 'Phenotype', 'HP:0030731', (103, 113)) ('thyroid carcinomas', 'Phenotype', 'HP:0002890', (95, 113)) ('mutation', 'Var', (13, 21)) ('SDHx', 'Gene', (38, 42)) ('epithelial thyroid carcinomas', 'Disease', 'MESH:D013964', (84, 113)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (95, 112)) ('SDHx', 'Chemical', '-', (38, 42)) ('carcinoma', 'Phenotype', 'HP:0030731', (103, 112)) ('epithelial thyroid carcinomas', 'Disease', (84, 113)) 98427 25694510 Missense SDHx variants were identified in five of 37 pairs of samples (SDHB Ala3Gly n=2, Ser163Pro n=1, and SDHD His50Arg n=2) (Table 1), in both tumor and paired adjacent normal samples, confirming their germline origin. ('SDHD', 'Gene', '6392', (108, 112)) ('Ser163Pro', 'Var', (89, 98)) ('SDHx', 'Gene', (9, 13)) ('His50Arg', 'Var', (113, 121)) ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('Ala3Gly', 'SUBSTITUTION', 'None', (76, 83)) ('SDHB', 'Gene', '6390', (71, 75)) ('variants', 'Var', (14, 22)) ('tumor', 'Disease', (146, 151)) ('His50Arg', 'SUBSTITUTION', 'None', (113, 121)) ('SDHB', 'Gene', (71, 75)) ('Ala3Gly', 'Var', (76, 83)) ('tumor', 'Disease', 'MESH:D009369', (146, 151)) ('Ser163Pro', 'SUBSTITUTION', 'None', (89, 98)) ('Missense', 'Var', (0, 8)) ('SDHD', 'Gene', (108, 112)) ('SDHx', 'Chemical', '-', (9, 13)) 98428 25694510 The five individuals with germline SDHx variants had three cPTC and two FTC. ('variants', 'Var', (40, 48)) ('SDHx', 'Chemical', '-', (35, 39)) ('SDHx', 'Gene', (35, 39)) 98429 25694510 Thus, there was an overall 6% prevalence of germline SDHB/D variants in the combined datasets comprising 754 thyroid cancer patients compared with 0/350 of our residential population controls (P<0.001) (Table 1). ('cancer', 'Phenotype', 'HP:0002664', (117, 123)) ('SDHB', 'Gene', '6390', (53, 57)) ('SDHB', 'Gene', (53, 57)) ('thyroid cancer', 'Disease', (109, 123)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (109, 123)) ('variants', 'Var', (60, 68)) ('thyroid cancer', 'Disease', 'MESH:D013964', (109, 123)) ('patients', 'Species', '9606', (124, 132)) 98430 25694510 No somatic intragenic SDHx variants were detected in our 37 thyroid carcinoma samples. ('variants', 'Var', (27, 35)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (60, 77)) ('SDHx', 'Gene', (22, 26)) ('SDHx', 'Chemical', '-', (22, 26)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (60, 77)) ('thyroid carcinoma', 'Disease', (60, 77)) ('carcinoma', 'Phenotype', 'HP:0030731', (68, 77)) 98431 25694510 Similarly, no somatic intragenic SDHx variants were detected in 476 PTC samples that also had matched blood samples (germline) in the TCGA dataset. ('SDHx', 'Gene', (33, 37)) ('SDHx', 'Chemical', '-', (33, 37)) ('variants', 'Var', (38, 46)) 98452 25694510 Defects in mitochondrial function have long been shown to contribute to the development and progression of cancer. ('mitochondrial', 'Enzyme', (11, 24)) ('cancer', 'Phenotype', 'HP:0002664', (107, 113)) ('Defects', 'Var', (0, 7)) ('contribute', 'Reg', (58, 68)) ('cancer', 'Disease', 'MESH:D009369', (107, 113)) ('cancer', 'Disease', (107, 113)) 98454 25694510 Supporting this were pilot observations of an increased prevalence of PTC and renal cell carcinoma, both considered oncocytic tumors, in SDHx variant carriers in CS/CS-like cases. ('variant', 'Var', (142, 149)) ('tumors', 'Phenotype', 'HP:0002664', (126, 132)) ('carcinoma', 'Phenotype', 'HP:0030731', (89, 98)) ('SDHx', 'Gene', (137, 141)) ('PTC', 'Disease', (70, 73)) ('SDHx', 'Chemical', '-', (137, 141)) ('renal cell carcinoma', 'Disease', (78, 98)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (78, 98)) ('oncocytic tumors', 'Disease', 'MESH:C535584', (116, 132)) ('oncocytic tumors', 'Disease', (116, 132)) ('carriers', 'Reg', (150, 158)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (78, 98)) 98455 25694510 The occurrence of these variants in patients with DTC but not in ethnicity-matched controls or sporadic breast cancer is further assurance. ('patients', 'Species', '9606', (36, 44)) ('variants', 'Var', (24, 32)) ('DTC', 'Chemical', '-', (50, 53)) ('cancer', 'Phenotype', 'HP:0002664', (111, 117)) ('occurrence', 'Reg', (4, 14)) ('breast cancer', 'Disease', 'MESH:D001943', (104, 117)) ('DTC', 'Disease', (50, 53)) ('breast cancer', 'Disease', (104, 117)) ('breast cancer', 'Phenotype', 'HP:0003002', (104, 117)) 98456 25694510 SDHB A3G (rs11203289) was reported in dbSNP but only in the African-American population, while our samples are derived from white individuals of European ancestry. ('SDHB', 'Gene', '6390', (0, 4)) ('dbSNP', 'Disease', (38, 43)) ('rs11203289', 'Mutation', 'rs11203289', (10, 20)) ('rs11203289', 'Var', (10, 20)) ('SDHB', 'Gene', (0, 4)) 98457 25694510 The most frequent variants SDHB S163P (rs33927012), SDHD G12S (rs34677591), and SDHD H50A (rs11214077) have also been reported in the database. ('H50A', 'Var', (85, 89)) ('rs33927012', 'Mutation', 'rs33927012', (39, 49)) ('rs34677591', 'Mutation', 'rs34677591', (63, 73)) ('SDHD', 'Gene', (80, 84)) ('rs33927012', 'Var', (39, 49)) ('rs34677591', 'Var', (63, 73)) ('SDHD', 'Gene', '6392', (52, 56)) ('rs11214077', 'Mutation', 'rs11214077', (91, 101)) ('G12S', 'Mutation', 'rs34677591', (57, 61)) ('SDHB', 'Gene', '6390', (27, 31)) ('SDHD', 'Gene', '6392', (80, 84)) ('S163P', 'Mutation', 'rs33927012', (32, 37)) ('H50A', 'SUBSTITUTION', 'None', (85, 89)) ('rs11214077', 'Var', (91, 101)) ('SDHB', 'Gene', (27, 31)) ('SDHD', 'Gene', (52, 56)) 98459 25694510 Indeed, these very same bioinformatics tools predicted that the SDHD P81L missense mutation would be benign when this is really the North American founder mutation predisposing to familial paraganglioma. ('familial paraganglioma', 'Disease', 'MESH:D010235', (180, 202)) ('paraganglioma', 'Phenotype', 'HP:0002668', (189, 202)) ('SDHD', 'Gene', (64, 68)) ('SDHD', 'Gene', '6392', (64, 68)) ('P81L', 'Mutation', 'rs80338844', (69, 73)) ('familial paraganglioma', 'Disease', (180, 202)) ('P81L', 'Var', (69, 73)) 98460 25694510 In our 2008 study, we showed clear one-to-one correlation between the identified SDHB or SDHD variants and profound functional phenotypes such as altered reactive oxygen species (ROS) and up regulation of AKT (also known as protein kinase B) and mitogen-activated protein kinase (MAPK). ('AKT', 'Gene', '207', (205, 208)) ('ROS', 'Chemical', 'MESH:D017382', (179, 182)) ('altered', 'Reg', (146, 153)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (154, 177)) ('SDHB', 'Gene', '6390', (81, 85)) ('mitogen-activated protein kinase', 'Pathway', (246, 278)) ('AKT', 'Gene', (205, 208)) ('SDHD', 'Gene', '6392', (89, 93)) ('variants', 'Var', (94, 102)) ('up regulation', 'PosReg', (188, 201)) ('SDHB', 'Gene', (81, 85)) ('SDHD', 'Gene', (89, 93)) 98461 25694510 The latter may explain why SDHB or SDHD variation can result in phenotypes similar to (but not identical to) Cowden and Cowden-like syndromes: the AKT and MAPK pathways are important pathways downstream of PTEN also. ('variation', 'Var', (40, 49)) ('Cowden-like syndromes', 'Disease', (120, 141)) ('SDHD', 'Gene', (35, 39)) ('SDHD', 'Gene', '6392', (35, 39)) ('result in', 'Reg', (54, 63)) ('SDHB', 'Gene', '6390', (27, 31)) ('AKT', 'Gene', '207', (147, 150)) ('Cowden', 'Disease', (109, 115)) ('MAPK pathways', 'Pathway', (155, 168)) ('PTEN', 'Gene', (206, 210)) ('SDHB', 'Gene', (27, 31)) ('PTEN', 'Gene', '5728', (206, 210)) ('AKT', 'Gene', (147, 150)) 98462 25694510 In our 2012 study, we validated that germline SDHx variants are associated with elevated thyroid cancer risks in Cowden and Cowden-like individuals. ('SDHx', 'Chemical', '-', (46, 50)) ('variants', 'Var', (51, 59)) ('elevated thyroid', 'Phenotype', 'HP:0008249', (80, 96)) ('elevated thyroid cancer', 'Disease', 'MESH:D013964', (80, 103)) ('cancer', 'Phenotype', 'HP:0002664', (97, 103)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (89, 103)) ('elevated thyroid cancer', 'Disease', (80, 103)) ('SDHx', 'Gene', (46, 50)) 98463 25694510 We also provided further functional evidence of these germline SDHx variants. ('variants', 'Var', (68, 76)) ('SDHx', 'Gene', (63, 67)) ('SDHx', 'Chemical', '-', (63, 67)) 98464 25694510 We showed that these variants led to mitochondrial metabolite imbalance, and in turn cause stabilization of HIF1alpha, and decreased baseline p53 levels mediated by the noncanonical NQO1 pathway. ('variants', 'Var', (21, 29)) ('imbalance', 'Phenotype', 'HP:0002172', (62, 71)) ('p53', 'Gene', (142, 145)) ('decreased', 'NegReg', (123, 132)) ('stabilization', 'MPA', (91, 104)) ('p53', 'Gene', '7157', (142, 145)) ('HIF1alpha', 'Gene', (108, 117)) ('mitochondrial metabolite imbalance', 'MPA', (37, 71)) ('led to', 'Reg', (30, 36)) ('NQO1', 'Gene', (182, 186)) ('HIF1alpha', 'Gene', '3091', (108, 117)) ('NQO1', 'Gene', '1728', (182, 186)) 98467 25694510 A recent in vitro study specifically in thyroid cancer cell lines also showed that SDHD G12S and SDHD H50R variants lead to impaired PTEN function through alteration of its subcellular localization accompanied by resistance to apoptosis and induction of migration, mediated by Rous sarcoma protooncogene (SRC). ('Rous sarcoma', 'Disease', 'MESH:D001357', (277, 289)) ('impaired', 'NegReg', (124, 132)) ('H50R', 'Mutation', 'rs11214077', (102, 106)) ('induction', 'Reg', (241, 250)) ('variants', 'Var', (107, 115)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (40, 54)) ('PTEN', 'Gene', '5728', (133, 137)) ('resistance to apoptosis', 'CPA', (213, 236)) ('alteration', 'Reg', (155, 165)) ('SDHD', 'Gene', (97, 101)) ('cancer', 'Phenotype', 'HP:0002664', (48, 54)) ('SDHD', 'Gene', '6392', (97, 101)) ('SRC', 'Gene', '6714', (305, 308)) ('SDHD', 'Gene', (83, 87)) ('subcellular localization', 'MPA', (173, 197)) ('Rous sarcoma', 'Disease', (277, 289)) ('thyroid cancer', 'Disease', (40, 54)) ('SDHD', 'Gene', '6392', (83, 87)) ('SRC', 'Gene', (305, 308)) ('function', 'MPA', (138, 146)) ('sarcoma', 'Phenotype', 'HP:0100242', (282, 289)) ('G12S', 'Mutation', 'rs34677591', (88, 92)) ('PTEN', 'Gene', (133, 137)) ('migration', 'CPA', (254, 263)) ('thyroid cancer', 'Disease', 'MESH:D013964', (40, 54)) 98468 25694510 Taking all the evidence together, we believe that the variants we reported in this and previous studies are very likely associated with thyroid carcinogenesis. ('variants', 'Var', (54, 62)) ('associated', 'Reg', (120, 130)) ('thyroid carcinogenesis', 'Disease', (136, 158)) ('thyroid carcinogenesis', 'Disease', 'MESH:D063646', (136, 158)) 98470 25694510 In the TCGA dataset, the 25 samples with somatic SDHC duplication had ~1.5-fold SDHC gene expression compared with samples without duplication, indicating that the additional copy of the gene does generate transcript (Supplementary Figure 1, see section on supplementary data given at the end of this article). ('duplication', 'Var', (54, 65)) ('SDHC', 'Gene', (49, 53)) ('expression', 'MPA', (90, 100)) ('transcript', 'MPA', (206, 216)) ('SDHC', 'Gene', (80, 84)) ('SDHC', 'Gene', '6391', (49, 53)) ('SDHC', 'Gene', '6391', (80, 84)) 98472 25694510 The association of germline loss-of-function mutations in SDHx genes and loss of SDH subunit protein expression in paraganglioma-pheochromocytoma and gastrointestinal stromal tumors are well established. ('loss', 'NegReg', (73, 77)) ('tumors', 'Phenotype', 'HP:0002664', (175, 181)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (150, 181)) ('mutations', 'Var', (45, 54)) ('SDH', 'Gene', (58, 61)) ('SDH', 'Gene', '6390', (58, 61)) ('loss-of-function', 'NegReg', (28, 44)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (129, 145)) ('SDH', 'Gene', '6390', (81, 84)) ('paraganglioma', 'Phenotype', 'HP:0002668', (115, 128)) ('SDHx', 'Chemical', '-', (58, 62)) ('expression', 'MPA', (101, 111)) ('tumor', 'Phenotype', 'HP:0002664', (175, 180)) ('SDH', 'Gene', (81, 84)) ('paraganglioma-pheochromocytoma and gastrointestinal stromal tumors', 'Disease', 'MESH:C564650', (115, 181)) 98478 25694510 As SDHC/D subunits mainly function as the anchor proteins to position the whole SDH complex into the mitochondrial inner membrane, it is likely that the loss of the structural SDHC/D subunits will affect the overall stability and integrity of complex II and lead to mitochondrial abnormalities. ('SDH', 'Gene', (3, 6)) ('SDH', 'Gene', '6390', (176, 179)) ('SDHC', 'Gene', '6391', (3, 7)) ('affect', 'Reg', (197, 203)) ('SDHC', 'Gene', '6391', (176, 180)) ('stability', 'MPA', (216, 225)) ('mitochondrial abnormalities', 'Phenotype', 'HP:0012103', (266, 293)) ('mitochondrial abnormalities', 'Disease', (266, 293)) ('SDH', 'Gene', '6390', (80, 83)) ('lead to', 'Reg', (258, 265)) ('SDH', 'Gene', (176, 179)) ('SDHC', 'Gene', (3, 7)) ('mitochondrial abnormalities', 'Disease', 'MESH:D028361', (266, 293)) ('SDHC', 'Gene', (176, 180)) ('SDH', 'Gene', (80, 83)) ('SDH', 'Gene', '6390', (3, 6)) ('integrity', 'MPA', (230, 239)) ('complex II', 'Enzyme', (243, 253)) ('loss', 'Var', (153, 157)) 98483 25694510 The question of if and how SDHx alterations differ in papillary and follicular histological subtype of thyroid cancer remains to be explored in depth. ('thyroid cancer', 'Disease', 'MESH:D013964', (103, 117)) ('cancer', 'Phenotype', 'HP:0002664', (111, 117)) ('SDHx', 'Chemical', '-', (27, 31)) ('alterations', 'Var', (32, 43)) ('SDHx', 'Gene', (27, 31)) ('differ', 'Reg', (44, 50)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (103, 117)) ('thyroid cancer', 'Disease', (103, 117)) 98484 25694510 Our earlier analysis revealed elevated risks of FTC due to germline PTEN pathogenic mutations and of PTC for germline SDHx alterations in CS/CS-like individuals. ('SDHx', 'Chemical', '-', (118, 122)) ('mutations', 'Var', (84, 93)) ('PTEN', 'Gene', (68, 72)) ('PTEN', 'Gene', '5728', (68, 72)) ('alterations', 'Var', (123, 134)) ('FTC', 'Disease', (48, 51)) ('CS/CS-like', 'Disease', (138, 148)) 98485 25694510 In this study of sporadic DTCs, germline SDHx variations were detected in both PTC and FTC cases. ('detected', 'Reg', (62, 70)) ('FTC', 'Disease', (87, 90)) ('DTC', 'Chemical', '-', (26, 29)) ('SDHx', 'Chemical', '-', (41, 45)) ('SDHx', 'Gene', (41, 45)) ('variations', 'Var', (46, 56)) ('PTC', 'Disease', (79, 82)) 98491 25694510 In conclusion, we have shown germline and somatic SDHx variants occur in sporadic DTC and overall loss of SDHx gene expression could represent a molecular signature of differentiated thyroid tumors. ('SDHx', 'Gene', (50, 54)) ('expression', 'MPA', (116, 126)) ('variants', 'Var', (55, 63)) ('SDHx', 'Chemical', '-', (106, 110)) ('DTC', 'Chemical', '-', (82, 85)) ('SDHx', 'Gene', (106, 110)) ('loss', 'NegReg', (98, 102)) ('tumor', 'Phenotype', 'HP:0002664', (191, 196)) ('thyroid tumors', 'Disease', (183, 197)) ('thyroid tumors', 'Disease', 'MESH:D013959', (183, 197)) ('tumors', 'Phenotype', 'HP:0002664', (191, 197)) ('SDHx', 'Chemical', '-', (50, 54)) ('thyroid tumor', 'Phenotype', 'HP:0100031', (183, 196)) 98536 20704348 After reduction, the solution was diluted with 90 mul of 100 mM Na2HPO4, 1mM CaCl2 at pH=8.0 and 3.5 mul of a 1 mg/ml solution of V8 protease (Thermo Scientific, Waltham, MA) in deionized water was added, and the reaction was incubated at 37 C for 5 hours. ('CaCl2', 'Chemical', 'MESH:D002122', (77, 82)) ('water', 'Chemical', 'MESH:D014867', (188, 193)) ('Na2HPO4', 'Chemical', 'MESH:C018279', (64, 71)) ('reduction', 'NegReg', (6, 15)) ('Na2HPO4', 'Var', (64, 71)) 98583 20704348 Mapping of peptides derived from proenkephalin revealed the final processed enkephalin peptides of (Met)enkephalin (ME), ME-Arg-Gly-Leu, (Leu)enkephalin that are all derived from proteolytic processing at dibasic residue sites of KR, KK, and RR. ('(Met)enkephalin', 'Gene', '5443', (99, 114)) ('Arg', 'Chemical', 'MESH:D001120', (124, 127)) ('Leu', 'Chemical', 'MESH:D007930', (138, 141)) ('proenkephalin', 'Gene', '5179', (33, 46)) ('KR', 'Chemical', 'MESH:D007726', (230, 232)) ('(Leu)enkephalin', 'Gene', '5173', (137, 152)) ('proenkephalin', 'Gene', (33, 46)) ('peptides', 'Chemical', 'MESH:D010455', (87, 95)) ('Leu', 'Chemical', 'MESH:D007930', (132, 135)) ('peptides', 'Chemical', 'MESH:D010455', (11, 19)) ('Met)enkephalin', 'Gene', (100, 114)) ('ME-Arg-Gly-Leu', 'Var', (121, 135)) ('Gly', 'Chemical', 'MESH:D005998', (128, 131)) ('Leu)enkephalin', 'Gene', (138, 152)) ('dibasic', 'Chemical', '-', (205, 212)) 98585 20704348 The presence of the enkephalin peptide (160-169) in the endogenous sample with the N-terminal KR dibasic residues suggest the involvement of the secretory vesicle cathepsin L endoprotease in the processing of proenkephalin. ('cathepsin L', 'Gene', '1514', (163, 174)) ('proenkephalin', 'Gene', '5179', (209, 222)) ('KR', 'Chemical', 'MESH:D007726', (94, 96)) ('160-169', 'Var', (40, 47)) ('proenkephalin', 'Gene', (209, 222)) ('dibasic', 'Chemical', '-', (97, 104)) ('involvement', 'Reg', (126, 137)) ('cathepsin L', 'Gene', (163, 174)) 98607 20704348 Truncated versions of the PEN peptide were also identified as an endogenous peptide. ('PEN', 'Gene', (26, 29)) ('PEN', 'Gene', '27344', (26, 29)) ('Truncated', 'Var', (0, 9)) 98612 20704348 Multiple endogenous peptides derived from chromogranin A (CgA) were identified corresponding to peptide domains of vasostatin, WE-14, LF-19, AL-11, catestatin, and parastatin. ('peptides', 'Chemical', 'MESH:D010455', (20, 28)) ('CgA', 'Gene', '1113', (58, 61)) ('LF-19', 'Var', (134, 139)) ('chromogranin A', 'Gene', '1113', (42, 56)) ('CgA', 'Gene', (58, 61)) ('chromogranin A', 'Gene', (42, 56)) 98620 20704348 Endogenous peptides derived from chromogranin B (CgB) were represented by GAWK and CCB peptide domains, as well as others consisting of peptides SD-16 (239-255), SE-30 (273-303), GD-19 (346-365), GE-14 (403-417), FA-16 (420-436), LE-19 (498-517), PE-10 (555-565), NL-9 (568-577), and QY-13 (580-593). ('chromogranin B', 'Gene', (33, 47)) ('peptides', 'Chemical', 'MESH:D010455', (136, 144)) ('CgB', 'Gene', '1114', (49, 52)) ('420-436', 'Var', (220, 227)) ('peptides', 'Chemical', 'MESH:D010455', (11, 19)) ('chromogranin B', 'Gene', '1114', (33, 47)) ('GD-19', 'Disease', 'MESH:D005776', (179, 184)) ('GD-19', 'Disease', (179, 184)) ('PE', 'Gene', '5179', (247, 249)) ('CgB', 'Gene', (49, 52)) 98637 20704348 Profiles of human secretory vesicle peptides revealed proteolytic processing mechanisms at dibasic and monobasic residues, as well as at non-basic residue sites. ('proteolytic processing', 'MPA', (54, 76)) ('monobasic', 'Var', (103, 112)) ('peptides', 'Chemical', 'MESH:D010455', (36, 44)) ('human', 'Species', '9606', (12, 17)) ('dibasic', 'Chemical', '-', (91, 98)) 98650 20704348 Extensive mapping of the endogenous peptides for proenkephalin, proNPY, proSAAS, CgA, CgB, and SCG2 indicate the preponderance of proteolytic processing at dibasic residues, as well as at some monobasic residue sites (but not all monobasic sites), that yield the identified endogenous neuropeptide products. ('CgA', 'Gene', '1113', (81, 84)) ('CgB', 'Gene', (86, 89)) ('proenkephalin', 'Gene', (49, 62)) ('SCG2', 'Gene', '7857', (95, 99)) ('dibasic', 'Chemical', '-', (156, 163)) ('CgB', 'Gene', '1114', (86, 89)) ('proteolytic processing', 'MPA', (130, 152)) ('dibasic residues', 'Var', (156, 172)) ('proNPY', 'Gene', (64, 70)) ('SAAS', 'Chemical', '-', (75, 79)) ('CgA', 'Gene', (81, 84)) ('endogenous neuropeptide products', 'MPA', (274, 306)) ('proNPY', 'Gene', '4852', (64, 70)) ('peptides', 'Chemical', 'MESH:D010455', (36, 44)) ('proenkephalin', 'Gene', '5179', (49, 62)) ('SCG2', 'Gene', (95, 99)) 98653 20704348 This cleavage site motif occurred in proNPY (residues 60-62, 62-65, 87-89), chromogranin A ( residues 300-303, 323-326, 359-361, 377-380) and chromogranin B (residues 258-260, 343-345, 400-402, 415-418, 473-476, 571-574) which are adjacent to the N- or C-terminal ends of endogenous peptides identified in this study. ('chromogranin B', 'Gene', (142, 156)) ('chromogranin A', 'Gene', (76, 90)) ('proNPY', 'Gene', '4852', (37, 43)) ('chromogranin B', 'Gene', '1114', (142, 156)) ('residues 258-260', 'Var', (158, 174)) ('peptides', 'Chemical', 'MESH:D010455', (283, 291)) ('chromogranin A', 'Gene', '1113', (76, 90)) ('proNPY', 'Gene', (37, 43)) 98675 16288654 The SDH mutation database: an online resource for succinate dehydrogenase sequence variants involved in pheochromocytoma, paraganglioma and mitochondrial complex II deficiency The SDHA, SDHB, SDHC and SDHD genes encode the subunits of succinate dehydrogenase (succinate: ubiquinone oxidoreductase), a component of both the Krebs cycle and the mitochondrial respiratory chain. ('SDHD', 'Gene', (201, 205)) ('variants', 'Var', (83, 91)) ('oxidoreductase', 'Gene', (282, 296)) ('SDHC', 'Gene', '6391', (192, 196)) ('SDH', 'Gene', (4, 7)) ('mitochondrial complex II deficiency', 'Phenotype', 'HP:0008314', (140, 175)) ('SDH', 'Gene', (201, 204)) ('mitochondrial complex II deficiency', 'Disease', (140, 175)) ('succinate dehydrogenase', 'Gene', (50, 73)) ('SDH', 'Gene', (186, 189)) ('SDH', 'Gene', (192, 195)) ('ubiquinone', 'Chemical', 'MESH:D014451', (271, 281)) ('paraganglioma', 'Disease', (122, 135)) ('paraganglioma', 'Disease', 'MESH:D010235', (122, 135)) ('SDHB', 'Gene', '6390', (186, 190)) ('succinate dehydrogenase', 'Gene', '6390', (235, 258)) ('SDHC', 'Gene', (192, 196)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (104, 120)) ('SDH', 'Gene', '6390', (180, 183)) ('mitochondrial complex II deficiency', 'Disease', 'MESH:C565375', (140, 175)) ('oxidoreductase', 'Gene', '8630', (282, 296)) ('SDHA', 'Gene', (180, 184)) ('pheochromocytoma', 'Disease', (104, 120)) ('succinate dehydrogenase', 'Gene', '6390', (50, 73)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (104, 120)) ('SDHD', 'Gene', '6392', (201, 205)) ('SDH', 'Gene', '6390', (4, 7)) ('involved', 'Reg', (92, 100)) ('paraganglioma', 'Phenotype', 'HP:0002668', (122, 135)) ('SDHA', 'Gene', '6389', (180, 184)) ('SDHB', 'Gene', (186, 190)) ('SDH', 'Gene', '6390', (201, 204)) ('SDH', 'Gene', '6390', (186, 189)) ('Krebs', 'Chemical', '-', (323, 328)) ('SDH', 'Gene', '6390', (192, 195)) ('SDH', 'Gene', (180, 183)) ('succinate dehydrogenase', 'Gene', (235, 258)) 98677 16288654 Germline mutations of SDHD and SDHB are a major cause of the hereditary forms of the tumors paraganglioma and pheochromocytoma. ('Germline mutations', 'Var', (0, 18)) ('SDHB', 'Gene', (31, 35)) ('hereditary forms of the tumors paraganglioma', 'Disease', 'MESH:D010235', (61, 105)) ('SDHD', 'Gene', '6392', (22, 26)) ('paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (92, 126)) ('cause', 'Reg', (48, 53)) ('SDHD', 'Gene', (22, 26)) ('hereditary forms of the tumors paraganglioma', 'Disease', (61, 105)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('SDHB', 'Gene', '6390', (31, 35)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (110, 126)) ('paraganglioma', 'Phenotype', 'HP:0002668', (92, 105)) ('tumors', 'Phenotype', 'HP:0002664', (85, 91)) 98681 16288654 Here we introduce all reported paraganglioma and pheochromocytoma related sequence variations in these genes, in addition to all reported mutations of SDHA. ('SDHA', 'Gene', (151, 155)) ('paraganglioma', 'Phenotype', 'HP:0002668', (31, 44)) ('variations', 'Var', (83, 93)) ('SDHA', 'Gene', '6389', (151, 155)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (49, 65)) ('paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (31, 65)) 98688 16288654 reported germline mutations in the gene encoding succinate dehydrogenase, subunit D (SDHD) in PGL1-linked families. ('SDHD', 'Gene', '6392', (85, 89)) ('PGL1-linked', 'Gene', (94, 105)) ('succinate dehydrogenase, subunit D', 'Gene', '6392', (49, 83)) ('SDHD', 'Gene', (85, 89)) ('germline mutations', 'Var', (9, 27)) 98691 16288654 In contrast, mutations of SDHA result in a range of clinical phenotypes, including Leigh syndrome, but have never been reported in relation to HN PGL or pheochromocytoma. ('pheochromocytoma', 'Disease', (153, 169)) ('HN PGL', 'Disease', (143, 149)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (83, 97)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (153, 169)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (153, 169)) ('SDHA', 'Gene', '6389', (26, 30)) ('HN PGL', 'Disease', 'MESH:D010235', (143, 149)) ('mutations', 'Var', (13, 22)) ('SDHA', 'Gene', (26, 30)) ('result in', 'Reg', (31, 40)) ('Leigh syndrome', 'Disease', (83, 97)) 98693 16288654 SDHA (Ch5p15) and SDHB (Ch1p36) encode the two catalytic subunits, the flavoprotein and the iron-sulfur protein respectively; SDHC (Ch1q21) and SDHD (Ch11q23) encode transmembrane proteins that anchor complex II in the inner mitochondrial membrane, and contain a ubiquinone binding site. ('SDHB', 'Gene', (18, 22)) ('SDHC', 'Gene', (126, 130)) ('sulfur', 'Chemical', 'MESH:D013455', (97, 103)) ('SDHA', 'Gene', (0, 4)) ('SDHC', 'Gene', '6391', (126, 130)) ('SDHD', 'Gene', '6392', (144, 148)) ('ubiquinone', 'MPA', (263, 273)) ('complex II', 'Protein', (201, 211)) ('Ch11q23', 'Var', (150, 157)) ('SDHA', 'Gene', '6389', (0, 4)) ('ubiquinone', 'Chemical', 'MESH:D014451', (263, 273)) ('SDHD', 'Gene', (144, 148)) ('iron', 'Chemical', 'MESH:D007501', (92, 96)) ('SDHB', 'Gene', '6390', (18, 22)) 98700 16288654 The SDH database includes (as of September 2005) 120 variants of which 98 are thought to be pathogenic and 22 non-functional variants (polymorphisms). ('SDH', 'Gene', '6390', (4, 7)) ('SDH', 'Gene', (4, 7)) ('variants', 'Var', (53, 61)) 98703 16288654 Within the SDH database, all variants that disrupt the reading frame, affect highly conserved residues or disrupt the consensus donor or acceptor splice sites (GT-AG), and are not found in healthy controls, can be considered to be pathological. ('affect', 'Reg', (70, 76)) ('disrupt', 'NegReg', (106, 113)) ('reading frame', 'MPA', (55, 68)) ('SDH', 'Gene', (11, 14)) ('donor', 'Species', '9606', (128, 133)) ('variants', 'Var', (29, 37)) ('highly conserved residues', 'MPA', (77, 102)) ('disrupt', 'NegReg', (43, 50)) ('SDH', 'Gene', '6390', (11, 14)) 98705 16288654 p.His50Arg of SDHD) and potential non-consensus splice site mutations but without evidence for transcript rearrangements are included in the database as such unless accompanied by clear evidence of pathogenic potential. ('SDHD', 'Gene', (14, 18)) ('p.His50Arg', 'Var', (0, 10)) ('p.His50Arg', 'Mutation', 'rs11214077', (0, 10)) ('SDHD', 'Gene', '6392', (14, 18)) 98709 16288654 The SDH mutation database is organized in a gene and exon centered fashion, and as such will be particularly useful to clinical geneticists, providing an up-to-date overview of all known SDH mutations. ('SDH', 'Gene', '6390', (4, 7)) ('SDH', 'Gene', '6390', (187, 190)) ('SDH', 'Gene', (4, 7)) ('mutations', 'Var', (191, 200)) ('SDH', 'Gene', (187, 190)) 98712 16288654 Since the first description of mutations of SDHD, SDHB and SDHC in paraganglioma and pheochromocytoma, a series of reports have appeared describing a total of 47 distinct mutations in SDHB and 42 in SDHD (Table 1). ('SDHB', 'Gene', '6390', (184, 188)) ('SDHC', 'Gene', (59, 63)) ('mutations', 'Var', (31, 40)) ('SDHB', 'Gene', (50, 54)) ('SDHB', 'Gene', (184, 188)) ('SDHD', 'Gene', (44, 48)) ('SDHD', 'Gene', '6392', (44, 48)) ('paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (67, 101)) ('SDHC', 'Gene', '6391', (59, 63)) ('SDHD', 'Gene', '6392', (199, 203)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (85, 101)) ('mutations', 'Var', (171, 180)) ('SDHD', 'Gene', (199, 203)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) ('SDHB', 'Gene', '6390', (50, 54)) 98713 16288654 While patterns already seem to be emerging (discussed below), given the number of SDHB and SDHD mutations currently known, it is important to realize that any conclusions must be seen as provisional, and only an expansion of the database will allow more definite conclusions to be drawn. ('SDHB', 'Gene', '6390', (82, 86)) ('SDHD', 'Gene', (91, 95)) ('SDHD', 'Gene', '6392', (91, 95)) ('SDHB', 'Gene', (82, 86)) ('mutations', 'Var', (96, 105)) 98714 16288654 Patients with mutations of SDHB and SDHD have recently been shown to display distinct clinical phenotypes. ('SDHD', 'Gene', (36, 40)) ('SDHD', 'Gene', '6392', (36, 40)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', '6390', (27, 31)) ('SDHB', 'Gene', (27, 31)) ('mutations', 'Var', (14, 23)) 98716 16288654 An interesting feature of the current SDHB-SDHD mutation spectrum is the difference in the frequency of missense mutations in contrast to truncating mutations (nonsense, frameshift, splice site and major deletions). ('SDHD', 'Gene', '6392', (43, 47)) ('SDHD', 'Gene', (43, 47)) ('frameshift', 'Var', (170, 180)) ('missense mutations', 'Var', (104, 122)) ('SDHB', 'Gene', '6390', (38, 42)) ('SDHB', 'Gene', (38, 42)) 98717 16288654 While missense mutations are relatively more common in SDHB, truncating mutations are more frequent in SDHD (Table 2). ('SDHB', 'Gene', (55, 59)) ('common', 'Reg', (45, 51)) ('SDHB', 'Gene', '6390', (55, 59)) ('frequent', 'Reg', (91, 99)) ('missense mutations', 'Var', (6, 24)) ('truncating', 'MPA', (61, 71)) ('SDHD', 'Gene', '6392', (103, 107)) ('SDHD', 'Gene', (103, 107)) 98718 16288654 The larger number of missense mutations observed in SDHB suggests that the SDHB protein is under greater structural constraint than the SDHD protein, which is also reflected by a higher degree of conservation for SDHB. ('SDHB', 'Gene', (52, 56)) ('SDHB', 'Gene', '6390', (75, 79)) ('missense mutations', 'Var', (21, 39)) ('SDHD', 'Gene', (136, 140)) ('SDHD', 'Gene', '6392', (136, 140)) ('SDHB', 'Gene', (75, 79)) ('SDHB', 'Gene', '6390', (213, 217)) ('SDHB', 'Gene', (213, 217)) ('SDHB', 'Gene', '6390', (52, 56)) 98719 16288654 Thus the weaker conservation of SDHD may allow more non-deleterious missense changes and require frameshift and truncating mutations before a pathogenic effect is seen. ('SDHD', 'Gene', '6392', (32, 36)) ('SDHD', 'Gene', (32, 36)) ('truncating', 'MPA', (112, 122)) ('frameshift', 'Var', (97, 107)) ('allow', 'Reg', (41, 46)) ('non-deleterious missense changes', 'MPA', (52, 84)) 98720 16288654 The missense mutations of SDHB cluster in several regions, including the iron-sulfur clusters, while the missense mutations of SDHD seem to cluster around the three transmembrane domains. ('cluster', 'Reg', (31, 38)) ('iron', 'Chemical', 'MESH:D007501', (73, 77)) ('sulfur', 'Chemical', 'MESH:D013455', (78, 84)) ('missense mutations', 'Var', (4, 22)) ('SDHB', 'Gene', '6390', (26, 30)) ('SDHD', 'Gene', (127, 131)) ('SDHD', 'Gene', '6392', (127, 131)) ('SDHB', 'Gene', (26, 30)) 98721 16288654 SDHD mutations are found evenly distributed over the four exons while mutations of SDHB are concentrated in certain exons, most notably exon 2 (16 mutations) and are entirely absent from exons 5 and 8 (Fig. ('SDHB', 'Gene', (83, 87)) ('mutations', 'Var', (70, 79)) ('SDHD', 'Gene', '6392', (0, 4)) ('SDHB', 'Gene', '6390', (83, 87)) ('SDHD', 'Gene', (0, 4)) 98722 16288654 A striking discrepancy has arisen between the numbers of mutations reported in the SDHB and SDHD genes and those of SDHA and SDHC. ('SDHB', 'Gene', (83, 87)) ('SDHD', 'Gene', '6392', (92, 96)) ('SDHD', 'Gene', (92, 96)) ('SDHC', 'Gene', (125, 129)) ('mutations', 'Var', (57, 66)) ('SDHA', 'Gene', '6389', (116, 120)) ('SDHC', 'Gene', '6391', (125, 129)) ('SDHB', 'Gene', '6390', (83, 87)) ('SDHA', 'Gene', (116, 120)) 98724 16288654 More curious, however is the small number of SDHC mutations reported, despite inclusion of SDHC in many of the screening efforts of paraganglioma/pheochromocytoma patients. ('SDHC', 'Gene', (91, 95)) ('patients', 'Species', '9606', (163, 171)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (146, 162)) ('SDHC', 'Gene', '6391', (91, 95)) ('mutations', 'Var', (50, 59)) ('SDHC', 'Gene', (45, 49)) ('SDHC', 'Gene', '6391', (45, 49)) ('paraganglioma', 'Phenotype', 'HP:0002668', (132, 145)) ('paraganglioma/pheochromocytoma', 'Disease', (132, 162)) ('paraganglioma/pheochromocytoma', 'Disease', 'MESH:D010673', (132, 162)) 98725 16288654 To date 42 different pathogenic mutations have been reported to affect the 159 amino acid SDHD protein while only four have been found affecting the 169 amino acids of the SDHC protein. ('SDHD', 'Gene', (90, 94)) ('SDHD', 'Gene', '6392', (90, 94)) ('SDHC', 'Gene', (172, 176)) ('mutations', 'Var', (32, 41)) ('SDHC', 'Gene', '6391', (172, 176)) ('affect', 'Reg', (64, 70)) ('protein', 'Protein', (95, 102)) 98726 16288654 The SDH database provides the only complete and up-to-date overview of all disease-related gene variants reported in SDH subunits. ('SDH', 'Gene', '6390', (4, 7)) ('SDH', 'Gene', '6390', (117, 120)) ('variants', 'Var', (96, 104)) ('SDH', 'Gene', (4, 7)) ('SDH', 'Gene', (117, 120)) 98729 16288654 A striking feature of the SDH database is the eight-fold greater number of reported mutations in SDHB and SDHD compared to SDHA and SDHC. ('SDHB', 'Gene', (97, 101)) ('SDH', 'Gene', (123, 126)) ('SDH', 'Gene', '6390', (97, 100)) ('SDHC', 'Gene', (132, 136)) ('SDHD', 'Gene', (106, 110)) ('SDH', 'Gene', (26, 29)) ('SDH', 'Gene', (106, 109)) ('SDH', 'Gene', (97, 100)) ('SDH', 'Gene', '6390', (132, 135)) ('mutations', 'Var', (84, 93)) ('SDHC', 'Gene', '6391', (132, 136)) ('SDH', 'Gene', '6390', (123, 126)) ('SDHA', 'Gene', (123, 127)) ('SDHB', 'Gene', '6390', (97, 101)) ('SDHD', 'Gene', '6392', (106, 110)) ('SDHA', 'Gene', '6389', (123, 127)) ('SDH', 'Gene', '6390', (26, 29)) ('SDH', 'Gene', (132, 135)) ('SDH', 'Gene', '6390', (106, 109)) 98730 16288654 This is perhaps unexpected in that all are subunits of a single protein complex, and, in yeast, mutation in any one of the four genes leads to loss of SDH function and an inability to grow by respiration. ('inability', 'Disease', 'MESH:D016388', (171, 180)) ('SDH', 'Gene', '6390', (151, 154)) ('SDH', 'Gene', (151, 154)) ('mutation', 'Var', (96, 104)) ('inability', 'Disease', (171, 180)) ('function', 'MPA', (155, 163)) ('yeast', 'Species', '4932', (89, 94)) ('loss', 'NegReg', (143, 147)) 98731 16288654 An explanation, in the case of SDHA, may be the presence in the genome of a second isoform and the fact that known human SDHA mutations do not lead to complete loss of the electron transfer function. ('SDHA', 'Gene', '6389', (31, 35)) ('SDHA', 'Gene', (31, 35)) ('SDHA', 'Gene', (121, 125)) ('human', 'Species', '9606', (115, 120)) ('electron transfer function', 'MPA', (172, 198)) ('mutations', 'Var', (126, 135)) ('SDHA', 'Gene', '6389', (121, 125)) 98734 16288654 Although the SDHC gene, on chromosome 1, might be more commonly affected by major deletions, it is possible that another genetic mechanism might explain the discrepancy. ('SDHC', 'Gene', (13, 17)) ('deletions', 'Var', (82, 91)) ('affected', 'Reg', (64, 72)) ('SDHC', 'Gene', '6391', (13, 17)) 98737 16288654 Knowledge brings understanding and a database of all known mutations in the genes encoding SDHA, B, C, and D will, we believe, represent a valuable tool and resource for both clinicians involved in the treatment of paraganglioma and pheochromocytoma patients, clinical geneticists needing a overview of current knowledge, and geneticists and other researchers needing a solid foundation for further exploration of the genetic aspects of these tumor syndromes, SDH function, and SDHA related phenotypes. ('SDH', 'Gene', (91, 94)) ('SDH', 'Gene', '6390', (478, 481)) ('SDHA', 'Gene', (478, 482)) ('SDHA', 'Gene', '6389', (91, 95)) ('tumor', 'Phenotype', 'HP:0002664', (443, 448)) ('SDH', 'Gene', '6390', (460, 463)) ('paraganglioma', 'Phenotype', 'HP:0002668', (215, 228)) ('SDHA', 'Gene', '6389', (478, 482)) ('SDHA, B', 'Gene', '6389', (91, 98)) ('SDH', 'Gene', (478, 481)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (233, 249)) ('tumor syndromes', 'Disease', (443, 458)) ('SDH', 'Gene', (460, 463)) ('patients', 'Species', '9606', (250, 258)) ('paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (215, 249)) ('SDH', 'Gene', '6390', (91, 94)) ('mutations', 'Var', (59, 68)) ('tumor syndromes', 'Disease', 'MESH:D009369', (443, 458)) ('SDHA', 'Gene', (91, 95)) 98782 32266384 The nuclear receptor steroidogenic factor-1 (SF1 also known as NR5A1) is a pivotal factor for the initiation and fetal maturation of the adrenal cortex, with its absence resulting in adrenal aplasia. ('SF1', 'Gene', (45, 48)) ('NR5A1', 'Gene', '2516', (63, 68)) ('adrenal aplasia', 'Disease', (183, 198)) ('steroid', 'Chemical', 'MESH:D013256', (21, 28)) ('SF1', 'Gene', '7536', (45, 48)) ('NR5A1', 'Gene', (63, 68)) ('resulting in', 'Reg', (170, 182)) ('adrenal aplasia', 'Phenotype', 'HP:0011743', (183, 198)) ('absence', 'Var', (162, 169)) ('adrenal aplasia', 'Disease', 'MESH:D000310', (183, 198)) 98853 32266384 However, aberrant expression and activation of G-protein coupled receptors have been implicated as a possible mechanism explaining cortisol hypersecretion (and in primary hyperaldosteronism). ('activation', 'PosReg', (33, 43)) ('G-protein coupled receptors', 'Protein', (47, 74)) ('primary hyperaldosteronism', 'Phenotype', 'HP:0011736', (163, 189)) ('cortisol', 'MPA', (131, 139)) ('primary hyperaldosteronism', 'Disease', (163, 189)) ('hyperaldosteronism', 'Phenotype', 'HP:0000859', (171, 189)) ('cortisol', 'Chemical', 'MESH:D006854', (131, 139)) ('aberrant expression', 'Var', (9, 28)) ('primary hyperaldosteronism', 'Disease', 'MESH:D003480', (163, 189)) 98866 32266384 Mutations in beta -catenin (CTNNB1) leading to constitutive activation of the Wnt signaling pathway is a frequent finding in benign and malignant adrenocortical tumors. ('benign', 'Disease', (125, 131)) ('beta -catenin', 'Gene', (13, 26)) ('malignant adrenocortical tumors', 'Disease', 'MESH:D009369', (136, 167)) ('tumors', 'Phenotype', 'HP:0002664', (161, 167)) ('malignant adrenocortical tumors', 'Disease', (136, 167)) ('CTNNB1', 'Gene', (28, 34)) ('activation', 'PosReg', (60, 70)) ('Mutations', 'Var', (0, 9)) ('tumor', 'Phenotype', 'HP:0002664', (161, 166)) ('CTNNB1', 'Gene', '1499', (28, 34)) ('beta -catenin', 'Gene', '1499', (13, 26)) ('Wnt signaling pathway', 'Pathway', (78, 99)) 98869 32266384 In 1 study of 100 adrenal adenomas that had been surgically excised, 36% were found to contain CTNNB1 mutations. ('CTNNB1', 'Gene', (95, 101)) ('adrenal adenomas', 'Disease', (18, 34)) ('adrenal adenomas', 'Phenotype', 'HP:0008256', (18, 34)) ('adrenal adenomas', 'Disease', 'MESH:D000236', (18, 34)) ('mutations', 'Var', (102, 111)) ('CTNNB1', 'Gene', '1499', (95, 101)) ('adrenal adenoma', 'Phenotype', 'HP:0008256', (18, 33)) 98870 32266384 Somatic activating mutations of GNAS, which encodes the alpha-subunit of the stimulatory G protein (GSalpha), occur in 5% to 17% of adrenal adenomas which are cortisol secreting. ('adrenal adenomas', 'Disease', (132, 148)) ('mutations', 'Var', (19, 28)) ('GSalpha', 'Gene', (100, 107)) ('GNAS', 'Gene', '2778', (32, 36)) ('GSalpha', 'Gene', '2778', (100, 107)) ('cortisol', 'Chemical', 'MESH:D006854', (159, 167)) ('adrenal adenoma', 'Phenotype', 'HP:0008256', (132, 147)) ('adrenal adenomas', 'Phenotype', 'HP:0008256', (132, 148)) ('activating', 'PosReg', (8, 18)) ('adrenal adenomas', 'Disease', 'MESH:D000236', (132, 148)) ('GNAS', 'Gene', (32, 36)) 98871 32266384 An example of this is constitutive activation of adenylyl cyclase as a result of somatic GNAS mutations in McCune-Albright syndrome. ('adenylyl cyclase', 'Enzyme', (49, 65)) ('McCune-Albright syndrome', 'Disease', (107, 131)) ('mutations', 'Var', (94, 103)) ('McCune-Albright syndrome', 'Disease', 'MESH:D005357', (107, 131)) ('GNAS', 'Gene', (89, 93)) ('GNAS', 'Gene', '2778', (89, 93)) ('activation', 'PosReg', (35, 45)) 98872 32266384 Inactivating mutations in PRKAR1A have been described in cortisol-producing adrenal tumors. ('cortisol', 'Chemical', 'MESH:D006854', (57, 65)) ('PRKAR1A', 'Gene', (26, 33)) ('adrenal tumors', 'Disease', (76, 90)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (76, 89)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('Inactivating mutations', 'Var', (0, 22)) ('adrenal tumors', 'Disease', 'MESH:D000310', (76, 90)) ('PRKAR1A', 'Gene', '5573', (26, 33)) ('tumors', 'Phenotype', 'HP:0002664', (84, 90)) ('described', 'Reg', (44, 53)) 98873 32266384 PRKAR1A gene encodes for a regulatory subunit of PKA, and inactivating mutations lead to constitutive activation of the cAMP-PKA pathway. ('inactivating mutations', 'Var', (58, 80)) ('cAMP', 'Chemical', '-', (120, 124)) ('PRKAR1A', 'Gene', (0, 7)) ('activation', 'PosReg', (102, 112)) ('PRKAR1A', 'Gene', '5573', (0, 7)) ('cAMP-PKA pathway', 'Pathway', (120, 136)) 98874 32266384 Although mutations in this gene were first described in Carney complex, somatic mutations of PRKAR1A have been described in some sporadic adrenocortical tumors. ('adrenocortical tumors', 'Disease', (138, 159)) ('PRKAR1A', 'Gene', '5573', (93, 100)) ('mutations', 'Var', (80, 89)) ('described', 'Reg', (111, 120)) ('adrenocortical tumors', 'Disease', 'MESH:D018268', (138, 159)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('tumors', 'Phenotype', 'HP:0002664', (153, 159)) ('PRKAR1A', 'Gene', (93, 100)) ('Carney complex', 'Disease', (56, 70)) 98876 32266384 Mutations in PRKACA may be associated with smaller adenomas but higher levels of cortisol production than adenomas where this mutation is not present. ('PRKACA', 'Gene', (13, 19)) ('cortisol', 'Chemical', 'MESH:D006854', (81, 89)) ('PRKACA', 'Gene', '5566', (13, 19)) ('levels of cortisol production', 'MPA', (71, 100)) ('higher', 'PosReg', (64, 70)) ('adenomas', 'Disease', 'MESH:D000236', (106, 114)) ('Mutations', 'Var', (0, 9)) ('adenomas', 'Disease', 'MESH:D000236', (51, 59)) ('adenomas', 'Disease', (106, 114)) ('adenomas', 'Disease', (51, 59)) 98877 32266384 The lower frequency of these mutations in adenomas which produce less cortisol may be an explanation for the lack of progression in these patients to a clinically apparent Cushing's syndrome. ('adenomas', 'Disease', (42, 50)) ("Cushing's syndrome", 'Phenotype', 'HP:0003118', (172, 190)) ('mutations', 'Var', (29, 38)) ("Cushing's syndrome", 'Disease', (172, 190)) ("Cushing's syndrome", 'Disease', 'MESH:D003480', (172, 190)) ('cortisol', 'Chemical', 'MESH:D006854', (70, 78)) ('adenomas', 'Disease', 'MESH:D000236', (42, 50)) ('patients', 'Species', '9606', (138, 146)) 98878 32266384 Mutations in cyclic nucleotide phosphodiesterase have also been noted in cortisol-producing ACAs. ('Mutations', 'Var', (0, 9)) ('cortisol', 'Chemical', 'MESH:D006854', (73, 81)) ('cyclic nucleotide phosphodiesterase', 'Gene', (13, 48)) ('cyclic nucleotide phosphodiesterase', 'Gene', '5140', (13, 48)) ('noted', 'Reg', (64, 69)) ('cortisol-producing ACAs', 'Disease', (73, 96)) 98880 32266384 Mutations in PDE11A and PDE8B genes are the most commonly reported. ('PDE11A', 'Gene', (13, 19)) ('PDE11A', 'Gene', '50940', (13, 19)) ('PDE8B', 'Gene', (24, 29)) ('PDE8B', 'Gene', '8622', (24, 29)) ('Mutations', 'Var', (0, 9)) 98881 32266384 Mutations in KCNJ5 (potassium channel) have been documented in patients with aldosterone-producing adenomas in approximately 40% of patients from European cohorts, though much higher rates are reported in patients from Japan and Asia. ('patients', 'Species', '9606', (205, 213)) ('KCNJ5', 'Gene', '3762', (13, 18)) ('aldosterone', 'Chemical', 'MESH:D000450', (77, 88)) ('potassium', 'Chemical', 'MESH:D011188', (20, 29)) ('adenomas', 'Disease', 'MESH:D000236', (99, 107)) ('Mutations', 'Var', (0, 9)) ('patients', 'Species', '9606', (63, 71)) ('men', 'Species', '9606', (53, 56)) ('patients', 'Species', '9606', (132, 140)) ('adenomas', 'Disease', (99, 107)) ('KCNJ5', 'Gene', (13, 18)) 98883 32266384 Adenomas with KCNJ5 mutations tend to be larger than those which do not carry the mutation and appear to be more common in women than men. ('KCNJ5', 'Gene', (14, 19)) ('men', 'Species', '9606', (125, 128)) ('KCNJ5', 'Gene', '3762', (14, 19)) ('Adenomas', 'Disease', 'MESH:D000236', (0, 8)) ('women', 'Species', '9606', (123, 128)) ('Adenomas', 'Disease', (0, 8)) ('mutations', 'Var', (20, 29)) ('men', 'Species', '9606', (134, 137)) 98885 32266384 In aldosterone-producing adenomas that did not have KCNJ5 mutations, abnormalities in ATP1A1 (encoding a Na+/K+ ATPase alpha subunit) were found in 5.2% and of ATP2B3 (encoding a Ca2+ ATPase) in 1.6%, with these mutations associated with increased plasma aldosterone concentrations and lower potassium concentrations than cases without the mutation. ('mutations', 'Var', (58, 67)) ('Ca2+', 'Chemical', 'MESH:D000069285', (179, 183)) ('increased plasma aldosterone', 'Phenotype', 'HP:0000859', (238, 266)) ('potassium concentrations', 'MPA', (292, 316)) ('ATP2B3', 'Gene', '492', (160, 166)) ('potassium', 'Chemical', 'MESH:D011188', (292, 301)) ('ATP2B3', 'Gene', (160, 166)) ('plasma aldosterone concentrations', 'MPA', (248, 281)) ('mutations', 'Var', (212, 221)) ('lower potassium concentrations', 'Phenotype', 'HP:0002900', (286, 316)) ('plasma aldosterone concentrations', 'Phenotype', 'HP:0000859', (248, 281)) ('KCNJ5', 'Gene', (52, 57)) ('aldosterone', 'Chemical', 'MESH:D000450', (3, 14)) ('lower', 'NegReg', (286, 291)) ('adenomas', 'Disease', 'MESH:D000236', (25, 33)) ('adenomas', 'Disease', (25, 33)) ('ATP1A1', 'Gene', (86, 92)) ('ATP1A1', 'Gene', '476', (86, 92)) ('aldosterone', 'Chemical', 'MESH:D000450', (255, 266)) ('increased', 'PosReg', (238, 247)) ('KCNJ5', 'Gene', '3762', (52, 57)) 98886 32266384 Additionally, mutations in the CACNA1D gene have been identified and recently gain of function mutations in the CLCN2 chloride channel gene has also been described. ('CACNA1D', 'Gene', '776', (31, 38)) ('CLCN2', 'Gene', (112, 117)) ('CACNA1D', 'Gene', (31, 38)) ('gain of function', 'PosReg', (78, 94)) ('CLCN2', 'Gene', '1181', (112, 117)) ('mutations', 'Var', (95, 104)) ('mutations', 'Var', (14, 23)) 98887 32266384 This gene encodes a voltage-gated calcium channel and 11% of aldosterone-producing adenomas without mutations in KCNJ5 have been reported to carry mutations in this gene. ('mutations', 'Var', (147, 156)) ('KCNJ5', 'Gene', '3762', (113, 118)) ('aldosterone', 'Chemical', 'MESH:D000450', (61, 72)) ('KCNJ5', 'Gene', (113, 118)) ('adenomas', 'Disease', 'MESH:D000236', (83, 91)) ('calcium', 'Chemical', 'MESH:D002118', (34, 41)) ('adenomas', 'Disease', (83, 91)) 98888 32266384 Mutations in KCNJ5, CACNA1H, ATP1A1, ATP2B3, and CACNA1D account for approximately 50% of aldosterone-producing adrenal adenomas in patients from Europe; this is likely to be higher in Asian patients. ('CACNA1D', 'Gene', (49, 56)) ('adrenal adenomas', 'Disease', 'MESH:D000236', (112, 128)) ('patients', 'Species', '9606', (191, 199)) ('CACNA1H', 'Gene', (20, 27)) ('adrenal adenoma', 'Phenotype', 'HP:0008256', (112, 127)) ('adrenal adenomas', 'Phenotype', 'HP:0008256', (112, 128)) ('KCNJ5', 'Gene', '3762', (13, 18)) ('CACNA1H', 'Gene', '8912', (20, 27)) ('Mutations', 'Var', (0, 9)) ('aldosterone', 'Chemical', 'MESH:D000450', (90, 101)) ('ATP2B3', 'Gene', '492', (37, 43)) ('adrenal adenomas', 'Disease', (112, 128)) ('ATP1A1', 'Gene', '476', (29, 35)) ('CACNA1D', 'Gene', '776', (49, 56)) ('ATP2B3', 'Gene', (37, 43)) ('patients', 'Species', '9606', (132, 140)) ('ATP1A1', 'Gene', (29, 35)) ('KCNJ5', 'Gene', (13, 18)) 98894 32266384 However, only one-third of these ACCs have a mutation of TP53. ('mutation', 'Var', (45, 53)) ('ACCs', 'Gene', (33, 37)) ('ACCs', 'Gene', '84680', (33, 37)) ('TP53', 'Gene', '7157', (57, 61)) ('TP53', 'Gene', (57, 61)) 98895 32266384 As previously described, mutations in CTNNB1 are also present in ACCs and may be associated with poor outcome. ('mutations', 'Var', (25, 34)) ('ACCs', 'Gene', '84680', (65, 69)) ('ACCs', 'Gene', (65, 69)) ('CTNNB1', 'Gene', (38, 44)) ('associated', 'Reg', (81, 91)) ('CTNNB1', 'Gene', '1499', (38, 44)) 98897 32266384 Mutations in this gene were identified in 21% of 123 ACCs following genomic characterization. ('identified', 'Reg', (28, 38)) ('Mutations', 'Var', (0, 9)) ('ACCs', 'Gene', (53, 57)) ('ACCs', 'Gene', '84680', (53, 57)) 98898 32266384 Loss of heterozygosity at the 11p15 locus can lead to insulin-like growth factor-2 overexpression which is associated with malignant ACCs. ('lead to', 'Reg', (46, 53)) ('insulin-like growth factor-2', 'Gene', '3481', (54, 82)) ('Loss of heterozygosity', 'Var', (0, 22)) ('insulin-like growth factor-2', 'Gene', (54, 82)) ('overexpression', 'PosReg', (83, 97)) ('11p15', 'Gene', (30, 35)) ('ACCs', 'Gene', (133, 137)) ('ACCs', 'Gene', '84680', (133, 137)) 98905 32266384 Whole-genome sequencing, along with single nucleotide polymorphism array analyses, identified recurrent mutations in an armadillo repeat containing 5 (ARMC5) gene, located in chromosome 16p, in 50% of BMAH patients who underwent surgery. ('ARMC5', 'Gene', '79798', (151, 156)) ('mutations', 'Var', (104, 113)) ('armadillo repeat containing 5', 'Gene', '79798', (120, 149)) ('patients', 'Species', '9606', (206, 214)) ('armadillo repeat containing 5', 'Gene', (120, 149)) ('ARMC5', 'Gene', (151, 156)) 98906 32266384 Patients with ARMC5 mutations tend to display adrenal hyperplasia associated with multiple nodules. ('adrenal hyperplasia', 'Disease', (46, 65)) ('Patients', 'Species', '9606', (0, 8)) ('adrenal hyperplasia', 'Disease', 'MESH:D000312', (46, 65)) ('adrenal hyperplasia', 'Phenotype', 'HP:0008221', (46, 65)) ('ARMC5', 'Gene', '79798', (14, 19)) ('ARMC5', 'Gene', (14, 19)) ('mutations', 'Var', (20, 29)) 98907 32266384 Discovering ARMC5 mutations was the first evidence of BMAH as a genetic disease. ('genetic disease', 'Disease', (64, 79)) ('mutations', 'Var', (18, 27)) ('ARMC5', 'Gene', '79798', (12, 17)) ('ARMC5', 'Gene', (12, 17)) ('BMAH', 'Disease', (54, 58)) ('genetic disease', 'Disease', 'MESH:D030342', (64, 79)) 98909 32266384 The penetrance of ARMC5 mutations is variable. ('mutations', 'Var', (24, 33)) ('ARMC5', 'Gene', '79798', (18, 23)) ('ARMC5', 'Gene', (18, 23)) 98915 32266384 Other mutations have been associated with sporadic pheochromocytoma clustering to 2 common pathways: hypoxic signaling and kinase signaling genes. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (51, 67)) ('pheochromocytoma', 'Disease', (51, 67)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (51, 67)) ('associated', 'Reg', (26, 36)) ('mutations', 'Var', (6, 15)) 98918 32266384 Cluster 2 gene mutations are more likely to result in adrenal pheochromocytomas, whereas those in Cluster 1 mostly result in extra-adrenal noradrenergic paragangliomas (except for mutations in VHL). ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (54, 79)) ('VHL', 'Gene', (193, 196)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (54, 79)) ('VHL', 'Gene', '7428', (193, 196)) ('mutations', 'Var', (15, 24)) ('paragangliomas', 'Disease', (153, 167)) ('adrenal pheochromocytomas', 'Disease', (54, 79)) ('paragangliomas', 'Disease', 'MESH:D010235', (153, 167)) ('result in', 'Reg', (44, 53)) ('extra-adrenal noradrenergic', 'MPA', (125, 152)) ('paragangliomas', 'Phenotype', 'HP:0002668', (153, 167)) ('paraganglioma', 'Phenotype', 'HP:0002668', (153, 166)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (62, 79)) ('result in', 'Reg', (115, 124)) 98919 32266384 Mutations in VHL, RET, NF1, SDHB, and SDHD account for 90% of all pheochromocytomas and paragangliomas. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (66, 83)) ('RET', 'Gene', '5979', (18, 21)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (66, 82)) ('NF1', 'Gene', (23, 26)) ('VHL', 'Gene', (13, 16)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (66, 102)) ('Mutations', 'Var', (0, 9)) ('NF1', 'Gene', '4763', (23, 26)) ('SDHD', 'Gene', (38, 42)) ('VHL', 'Gene', '7428', (13, 16)) ('SDHD', 'Gene', '6392', (38, 42)) ('RET', 'Gene', (18, 21)) ('SDHB', 'Gene', '6390', (28, 32)) ('paraganglioma', 'Phenotype', 'HP:0002668', (88, 101)) ('paragangliomas', 'Phenotype', 'HP:0002668', (88, 102)) ('SDHB', 'Gene', (28, 32)) 98922 32266384 SDHB (10.3%) and SDHD (8.9%) mutations are the most frequent germline mutations in pheochromocytoma and paragangliomas. ('pheochromocytoma and paragangliomas', 'Disease', 'MESH:D010673', (83, 118)) ('mutations', 'Var', (29, 38)) ('SDHD', 'Gene', '6392', (17, 21)) ('SDHD', 'Gene', (17, 21)) ('SDHB', 'Gene', '6390', (0, 4)) ('paragangliomas', 'Phenotype', 'HP:0002668', (104, 118)) ('paraganglioma', 'Phenotype', 'HP:0002668', (104, 117)) ('SDHB', 'Gene', (0, 4)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (83, 99)) 98924 32266384 In 1 large study of patients with pheochromocytoma and/or paraganglioma, patients with NF1 and MEN2 mutations could be discriminated from those with VHL and SDH mutations in 99% of cases by the relative concentrations of normetanephrine and metanephrine, as all patients with NF1 and MEN2 presented with tumors characterized by increased plasma concentrations of metanephrine, in contrast to patients with VHL and SDH mutations, usually presenting with increases in normetanephrine or methoxytyramine. ('tumors', 'Disease', (304, 310)) ('metanephrine', 'Chemical', 'MESH:D008676', (224, 236)) ('NF1', 'Gene', '4763', (87, 90)) ('NF1', 'Gene', '4763', (276, 279)) ('metanephrine', 'Chemical', 'MESH:D008676', (241, 253)) ('VHL', 'Gene', '7428', (406, 409)) ('SDH', 'Gene', '6390', (414, 417)) ('metanephrine', 'Chemical', 'MESH:D008676', (469, 481)) ('NF1', 'Gene', (87, 90)) ('VHL', 'Gene', '7428', (149, 152)) ('NF1', 'Gene', (276, 279)) ('tumors', 'Disease', 'MESH:D009369', (304, 310)) ('increased plasma concentrations', 'Phenotype', 'HP:0020170', (328, 359)) ('MEN2', 'Var', (284, 288)) ('VHL', 'Gene', (149, 152)) ('paraganglioma', 'Disease', (58, 71)) ('patients', 'Species', '9606', (20, 28)) ('increased', 'PosReg', (328, 337)) ('SDH', 'Gene', '6390', (157, 160)) ('SDH', 'Gene', (414, 417)) ('paraganglioma', 'Disease', 'MESH:D010235', (58, 71)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (34, 50)) ('patients', 'Species', '9606', (392, 400)) ('metanephrine', 'Chemical', 'MESH:D008676', (363, 375)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (485, 500)) ('tumor', 'Phenotype', 'HP:0002664', (304, 309)) ('pheochromocytoma', 'Disease', (34, 50)) ('patients', 'Species', '9606', (73, 81)) ('tumors', 'Phenotype', 'HP:0002664', (304, 310)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (34, 50)) ('VHL', 'Gene', (406, 409)) ('normetanephrine', 'Chemical', 'MESH:D009647', (466, 481)) ('normetanephrine', 'Chemical', 'MESH:D009647', (221, 236)) ('paraganglioma', 'Phenotype', 'HP:0002668', (58, 71)) ('SDH', 'Gene', (157, 160)) ('patients', 'Species', '9606', (262, 270)) ('plasma concentrations of metanephrine', 'MPA', (338, 375)) 98925 32266384 Additionally, measurements of plasma methoxytyramine discriminated patients with SDH mutations from those with VHL mutations in a further 78% of cases. ('VHL', 'Gene', (111, 114)) ('patients', 'Species', '9606', (67, 75)) ('VHL', 'Gene', '7428', (111, 114)) ('discriminated', 'Reg', (53, 66)) ('mutations', 'Var', (85, 94)) ('SDH', 'Gene', '6390', (81, 84)) ('men', 'Species', '9606', (21, 24)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (37, 52)) ('SDH', 'Gene', (81, 84)) 98959 32266384 A HU <= 10 is consistent with a benign adrenal adenoma or other benign lesions (eg, myelolipomas, lipomas). ('lipomas', 'Phenotype', 'HP:0012032', (89, 96)) ('lipomas', 'Phenotype', 'HP:0012032', (98, 105)) ('adrenal adenoma', 'Phenotype', 'HP:0008256', (39, 54)) ('myelolipomas', 'Disease', (84, 96)) ('adrenal adenoma', 'Disease', 'MESH:D000236', (39, 54)) ('lipomas', 'Disease', 'MESH:D008067', (89, 96)) ('adrenal adenoma', 'Disease', (39, 54)) ('lipomas', 'Disease', 'MESH:D008067', (98, 105)) ('lipomas', 'Disease', (89, 96)) ('lipomas', 'Disease', (98, 105)) ('HU <= 10', 'Var', (2, 10)) ('myelolipomas', 'Disease', 'MESH:D018209', (84, 96)) 98982 32266384 Despite the absence of florid signs and symptoms, ACS in patients AI has been associated with hypertension, insulin resistance, type 2 diabetes mellitus, obesity, metabolic syndrome, and increased mortality. ('mortality', 'Disease', (197, 206)) ('ACS', 'Var', (50, 53)) ('obesity', 'Disease', (154, 161)) ('type 2 diabetes', 'Disease', (128, 143)) ('insulin', 'Gene', (108, 115)) ('type 2 diabetes', 'Phenotype', 'HP:0005978', (128, 143)) ('hypertension', 'Phenotype', 'HP:0000822', (94, 106)) ('insulin resistance', 'Phenotype', 'HP:0000855', (108, 126)) ('type 2 diabetes', 'Disease', 'MESH:D003924', (128, 143)) ('obesity', 'Disease', 'MESH:D009765', (154, 161)) ('diabetes mellitus', 'Disease', (135, 152)) ('mortality', 'Disease', 'MESH:D003643', (197, 206)) ('associated', 'Reg', (78, 88)) ('metabolic syndrome', 'Disease', (163, 181)) ('diabetes mellitus', 'Disease', 'MESH:D003920', (135, 152)) ('insulin', 'Gene', '3630', (108, 115)) ('obesity', 'Phenotype', 'HP:0001513', (154, 161)) ('diabetes mellitus', 'Phenotype', 'HP:0000819', (135, 152)) ('patients', 'Species', '9606', (57, 65)) ('metabolic syndrome', 'Disease', 'MESH:D024821', (163, 181)) ('hypertension', 'Disease', 'MESH:D006973', (94, 106)) ('hypertension', 'Disease', (94, 106)) 98997 32266384 Increased cardiovascular disease has been linked to the post-1-mg DST cortisol level as an independent cardiovascular risk factor. ('cardiovascular disease', 'Phenotype', 'HP:0001626', (10, 32)) ('cardiovascular risk factor', 'Phenotype', 'HP:0001626', (103, 129)) ('cardiovascular disease', 'Disease', 'MESH:D002318', (10, 32)) ('post-1-mg DST', 'Var', (56, 69)) ('cortisol', 'Chemical', 'MESH:D006854', (70, 78)) ('cardiovascular disease', 'Disease', (10, 32)) 99001 32266384 Impaired glucose tolerance or diabetes has been reported to occur in 10% to 69% of patients with ACS and improved glycemic control (and in some cases reversal of diabetes) following surgery is reported in some studies but not others (Table 7). ('ACS', 'Var', (97, 100)) ('diabetes', 'Disease', 'MESH:D003920', (30, 38)) ('glycemic control', 'MPA', (114, 130)) ('patients', 'Species', '9606', (83, 91)) ('Impaired glucose tolerance', 'Disease', (0, 26)) ('Impaired glucose tolerance', 'Disease', 'MESH:D018149', (0, 26)) ('diabetes', 'Disease', (162, 170)) ('diabetes', 'Disease', 'MESH:D003920', (162, 170)) ('improved', 'PosReg', (105, 113)) ('Impaired glucose tolerance', 'Phenotype', 'HP:0040270', (0, 26)) ('diabetes', 'Disease', (30, 38)) 99037 32266384 However, normotensive patients with suppressible aldosterone/renin ratios may frequently develop hypertension and PA. Brown and colleagues reported that populations with suppressed plasma renin activity (<=0.5 ng/mL/h) and high aldosterone levels were at increased risk of hypertension (HR 1.18; 95% CI 1.03-1.36). ('hypertension', 'Disease', (97, 109)) ('suppressed plasma renin activity', 'Phenotype', 'HP:0003351', (170, 202)) ('renin', 'Gene', (188, 193)) ('suppressed', 'NegReg', (170, 180)) ('<=0.5 ng/mL/h', 'Var', (204, 217)) ('renin', 'Gene', '5972', (61, 66)) ('hypertension', 'Phenotype', 'HP:0000822', (97, 109)) ('hypertension', 'Phenotype', 'HP:0000822', (273, 285)) ('patients', 'Species', '9606', (22, 30)) ('hypertension', 'Disease', (273, 285)) ('renin', 'Gene', '5972', (188, 193)) ('hypertension', 'Disease', 'MESH:D006973', (97, 109)) ('aldosterone levels', 'MPA', (228, 246)) ('aldosterone', 'Chemical', 'MESH:D000450', (49, 60)) ('high aldosterone', 'Phenotype', 'HP:0000859', (223, 239)) ('renin', 'Gene', (61, 66)) ('aldosterone', 'Chemical', 'MESH:D000450', (228, 239)) ('hypertension', 'Disease', 'MESH:D006973', (273, 285)) 99048 32266384 There is a correlation between tumor size and risk of adrenocortical cancer: 2% risk in AIs <4 cm, 6% in AIs 4.1 to 6 cm, and 25% in AIs >6 cm. ('adrenocortical cancer', 'Disease', (54, 75)) ('tumor', 'Phenotype', 'HP:0002664', (31, 36)) ('cancer', 'Phenotype', 'HP:0002664', (69, 75)) ('tumor', 'Disease', (31, 36)) ('AIs <4 cm', 'Var', (88, 97)) ('adrenocortical cancer', 'Disease', 'MESH:D000306', (54, 75)) ('tumor', 'Disease', 'MESH:D009369', (31, 36)) 99128 32266384 It should only be undertaken following detailed discussion at an adrenal tumor multidisciplinary meeting and if the lesion is not conclusively benign on imaging and, most importantly, the outcome will affect the therapeutic management of the patient (eg, if the patient has an extra-adrenal primary and a lesion in the adrenal would affect the staging and further management of the patient). ('men', 'Species', '9606', (230, 233)) ('adrenal tumor', 'Disease', (65, 78)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('adrenal tumor', 'Disease', 'MESH:D000310', (65, 78)) ('affect', 'Reg', (201, 207)) ('patient', 'Species', '9606', (382, 389)) ('staging', 'CPA', (344, 351)) ('affect', 'Reg', (333, 339)) ('patient', 'Species', '9606', (242, 249)) ('patient', 'Species', '9606', (262, 269)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (65, 78)) ('lesion', 'Var', (305, 311)) ('men', 'Species', '9606', (370, 373)) 99163 32266384 Based on the available data and clinical experience, the European guidelines suggest that laparoscopic adrenalectomy may be justified for adrenal tumors <=6 cm with radiological signs of malignancy and without evidence of local invasion. ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('<=6', 'Var', (153, 156)) ('malignancy', 'Disease', 'MESH:D009369', (187, 197)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (138, 151)) ('adrenal tumors', 'Disease', 'MESH:D000310', (138, 152)) ('malignancy', 'Disease', (187, 197)) ('tumors', 'Phenotype', 'HP:0002664', (146, 152)) ('adrenal tumors', 'Disease', (138, 152)) 99246 32266384 124I-MIBG has been evaluated as a potential PET imaging tracer but this undergoes complex decay with emission of high energy gamma radiation leading to poorer image quality and unfavorable dosimetry. ('image', 'MPA', (159, 164)) ('poorer', 'NegReg', (152, 158)) ('MIBG', 'Chemical', 'MESH:D019797', (5, 9)) ('124I-MIBG', 'Var', (0, 9)) 99328 32788874 PPGLs can induce and exacerbate arterial stiffness, myocardial hypertrophy and fibrosis, and these cardiovascular remodeling have been reported to be associated with high blood pressure. ('myocardial hypertrophy', 'Disease', 'MESH:D006332', (52, 74)) ('exacerbate', 'PosReg', (21, 31)) ('myocardial hypertrophy', 'Disease', (52, 74)) ('PPGLs', 'Var', (0, 5)) ('fibrosis', 'Disease', (79, 87)) ('induce', 'PosReg', (10, 16)) ('PPGLs', 'Chemical', '-', (0, 5)) ('high blood pressure', 'Phenotype', 'HP:0000822', (166, 185)) ('fibrosis', 'Disease', 'MESH:D005355', (79, 87)) ('high blood pressure', 'Disease', (166, 185)) ('arterial stiffness', 'CPA', (32, 50)) 99329 32788874 These hypertension-associated morphofunctional changes impair the ability of blood pressure regulation in stressful situations, which is thought to contribute to the development of intraoperative hypotension during PPGL resection. ('contribute', 'Reg', (148, 158)) ('hypotension', 'Phenotype', 'HP:0002615', (196, 207)) ('hypertension', 'Disease', 'MESH:D006973', (6, 18)) ('blood pressure regulation in stressful situations', 'MPA', (77, 126)) ('intraoperative hypotension', 'Disease', (181, 207)) ('PPGL', 'Chemical', '-', (215, 219)) ('intraoperative hypotension', 'Disease', 'MESH:D007022', (181, 207)) ('hypertension', 'Disease', (6, 18)) ('changes', 'Var', (47, 54)) ('impair', 'NegReg', (55, 61)) ('hypertension', 'Phenotype', 'HP:0000822', (6, 18)) 99341 32788874 This controversial outcome may be due to the most powerful factor, surgical manipulation of PPGL, masking the effects of other factors on hypertensive crisis. ('surgical manipulation', 'Var', (67, 88)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (138, 157)) ('hypertensive', 'Disease', 'MESH:D006973', (138, 150)) ('PPGL', 'Chemical', '-', (92, 96)) ('PPGL', 'Gene', (92, 96)) ('hypertensive', 'Disease', (138, 150)) 99357 32207276 Multivariable Cox regression models adjusted for covariates showed that metastatic PPGLs were associated with a 2.40-fold higher risk of mortality than non-metastatic PPGLs (95% confidence interval, 1.38 to 4.17; P=0.002). ('metastatic PPGLs', 'Var', (72, 88)) ('PGLs', 'Phenotype', 'HP:0002668', (84, 88)) ('PPGLs', 'Chemical', '-', (167, 172)) ('mortality', 'Disease', (137, 146)) ('PGLs', 'Phenotype', 'HP:0002668', (168, 172)) ('PPGLs', 'Chemical', '-', (83, 88)) ('mortality', 'Disease', 'MESH:D003643', (137, 146)) 99376 32207276 Subjects with PPGLs who satisfied the following criteria from January 1, 2003 to December 31, 2014 were included: (1) having the following ICD-10 diagnostic codes as the principal diagnosis on two or more:occasions: D350 (benign neoplasm of adrenal gland), D441 (neoplasm of uncertain behavior, adrenal), I1522 (hypertension due to PCC), C741 (malignant neoplasm, adrenal medulla), or C749 (malignant neoplasm, adrenal nonspecified) for adrenal tumors; D356 (benign neoplasm, aortic body, and PGL), D446 (neoplasm of uncertain behavior, carotid), D447 (neoplasm of uncertain behavior, aortic body, and PGL), D487 (neoplasm of uncertain behavior, unspecific sites), or C755 (malignant neoplasm, aortic body, and PGL) for PGLs. ('malignant neoplasm', 'Disease', 'MESH:D009369', (391, 409)) ('neoplasm', 'Disease', 'MESH:D009369', (614, 622)) ('neoplasm', 'Disease', 'MESH:D009369', (684, 692)) ('malignant neoplasm', 'Disease', (344, 362)) ('neoplasm', 'Phenotype', 'HP:0002664', (354, 362)) ('tumor', 'Phenotype', 'HP:0002664', (445, 450)) ('tumors', 'Phenotype', 'HP:0002664', (445, 451)) ('D447', 'Var', (547, 551)) ('neoplasm', 'Disease', 'MESH:D009369', (263, 271)) ('malignant neoplasm', 'Disease', (391, 409)) ('neoplasm', 'Phenotype', 'HP:0002664', (466, 474)) ('neoplasm', 'Disease', (614, 622)) ('hypertension', 'Disease', 'MESH:D006973', (312, 324)) ('PGLs', 'Phenotype', 'HP:0002668', (15, 19)) ('C755', 'Var', (668, 672)) ('neoplasm', 'Phenotype', 'HP:0002664', (401, 409)) ('neoplasm', 'Disease', (684, 692)) ('hypertension', 'Disease', (312, 324)) ('adrenal tumors', 'Disease', (437, 451)) ('malignant neoplasm', 'Disease', 'MESH:D009369', (674, 692)) ('benign neoplasm', 'Disease', (459, 474)) ('neoplasm', 'Disease', (263, 271)) ('benign neoplasm', 'Disease', (222, 237)) ('neoplasm', 'Disease', 'MESH:D009369', (229, 237)) ('D487', 'Var', (608, 612)) ('neoplasm of adrenal gland', 'Phenotype', 'HP:0100631', (229, 254)) ('malignant neoplasm', 'Disease', (674, 692)) ('hypertension', 'Phenotype', 'HP:0000822', (312, 324)) ('neoplasm', 'Disease', 'MESH:D009369', (354, 362)) ('neoplasm', 'Disease', 'MESH:D009369', (505, 513)) ('neoplasm', 'Disease', 'MESH:D009369', (553, 561)) ('neoplasm', 'Disease', (229, 237)) ('PGLs', 'Phenotype', 'HP:0002668', (720, 724)) ('D356', 'Var', (453, 457)) ('PPGLs', 'Chemical', '-', (14, 19)) ('neoplasm', 'Phenotype', 'HP:0002664', (263, 271)) ('D446', 'Var', (499, 503)) ('neoplasm', 'Disease', 'MESH:D009369', (466, 474)) ('neoplasm', 'Disease', (505, 513)) ('neoplasm', 'Disease', 'MESH:D009369', (401, 409)) ('neoplasm', 'Disease', (354, 362)) ('PCC', 'Gene', (332, 335)) ('benign neoplasm', 'Disease', 'MESH:D009369', (459, 474)) ('neoplasm', 'Disease', (553, 561)) ('benign neoplasm', 'Disease', 'MESH:D009369', (222, 237)) ('malignant neoplasm', 'Disease', 'MESH:D009369', (344, 362)) ('neoplasm', 'Phenotype', 'HP:0002664', (229, 237)) ('neoplasm', 'Disease', (466, 474)) ('neoplasm', 'Disease', (401, 409)) ('PCC', 'Gene', '1421', (332, 335)) ('adrenal tumors', 'Disease', 'MESH:D000310', (437, 451)) 99378 32207276 (2) Identified subjects were further limited to those who were undergoing the following types of surgery after the first date of PPGL registration (n=8,945): P4571 (adrenalectomy, unilateral), P4572 (adrenalectomy, bilateral), P4581 (carotid body tumor resection, unilateral), P4582 (carotid body tumor resection, bilateral), Q2501 (retroperitoneal tumor resection, unilateral), Q2502 (retroperitoneal tumor resection, bilateral), R3512 (transurethral resection of bladder tumor), O1591 (mediastinal tumor resection, unilateral), or O1592 (mediastinal tumor resection, bilateral). ('tumor', 'Phenotype', 'HP:0002664', (247, 252)) ('tumor', 'Disease', (402, 407)) ('Q2502', 'Var', (379, 384)) ('tumor', 'Disease', 'MESH:D009369', (552, 557)) ('tumor', 'Phenotype', 'HP:0002664', (349, 354)) ('tumor', 'Disease', 'MESH:D009369', (402, 407)) ('bladder tumor', 'Disease', (465, 478)) ('tumor', 'Disease', (297, 302)) ('Q2501', 'Var', (326, 331)) ('tumor', 'Disease', (473, 478)) ('bladder tumor', 'Disease', 'MESH:D001749', (465, 478)) ('retroperitoneal tumor', 'Disease', (333, 354)) ('tumor', 'Disease', 'MESH:D009369', (297, 302)) ('carotid body tumor', 'Disease', (284, 302)) ('carotid body tumor', 'Disease', (234, 252)) ('tumor', 'Disease', 'MESH:D009369', (473, 478)) ('retroperitoneal tumor', 'Disease', (386, 407)) ('O1591', 'Var', (481, 486)) ('tumor', 'Phenotype', 'HP:0002664', (402, 407)) ('tumor', 'Disease', (247, 252)) ('O1592', 'Var', (533, 538)) ('tumor', 'Phenotype', 'HP:0002664', (297, 302)) ('carotid body tumor', 'Disease', 'MESH:D002345', (284, 302)) ('tumor', 'Disease', (500, 505)) ('tumor', 'Disease', 'MESH:D009369', (247, 252)) ('carotid body tumor', 'Disease', 'MESH:D002345', (234, 252)) ('P4581', 'Var', (227, 232)) ('P4571', 'Var', (158, 163)) ('tumor', 'Disease', (349, 354)) ('tumor', 'Phenotype', 'HP:0002664', (473, 478)) ('P4582', 'Var', (277, 282)) ('retroperitoneal tumor', 'Disease', 'MESH:D012186', (333, 354)) ('tumor', 'Disease', 'MESH:D009369', (500, 505)) ('P4572', 'Var', (193, 198)) ('tumor', 'Disease', 'MESH:D009369', (349, 354)) ('bladder tumor', 'Phenotype', 'HP:0009725', (465, 478)) ('carotid body tumor', 'Phenotype', 'HP:0002668', (284, 302)) ('retroperitoneal tumor', 'Disease', 'MESH:D012186', (386, 407)) ('carotid body tumor', 'Phenotype', 'HP:0002668', (234, 252)) ('tumor', 'Disease', (552, 557)) 99379 32207276 (3) Among these, subjects who underwent biochemical tests for catecholamine excess, such as tests for vanillylmandelic acid (C3211, C3212, C3213), epinephrine (C3231), norepinephrine (C3232), dopamine (C3233), normetanephrine (C3234), metanephrine (C3235), or total catecholamines (C3239) at least twice, including at least one preoperative biochemical test, were included (n=1,428). ('C3213', 'Var', (139, 144)) ('catecholamine', 'Chemical', 'MESH:D002395', (62, 75)) ('C3233', 'Var', (202, 207)) ('catecholamines', 'Chemical', 'MESH:D002395', (266, 280)) ('C3239', 'Var', (282, 287)) ('C3234', 'Var', (227, 232)) ('dopamine', 'MPA', (192, 200)) ('C3235', 'Var', (249, 254)) ('epinephrine', 'MPA', (147, 158)) ('normetanephrine', 'MPA', (210, 225)) ('C3232', 'Var', (184, 189)) ('C3211', 'Var', (125, 130)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (62, 82)) ('C3212', 'Var', (132, 137)) ('C3231', 'Var', (160, 165)) ('metanephrine', 'MPA', (235, 247)) ('catecholamine', 'Chemical', 'MESH:D002395', (266, 279)) 99380 32207276 (4) Of the identified cases, patients with primary aldosteronism (E260, I1520, I1521), Cushing syndrome (E240, E248, E249), or adrenal cortical carcinoma (C740) as the principal or secondary diagnosis were excluded (n=380). ('patients', 'Species', '9606', (29, 37)) ('Cushing syndrome', 'Disease', 'MESH:D003480', (87, 103)) ('E240', 'Var', (105, 109)) ('primary aldosteronism', 'Phenotype', 'HP:0011736', (43, 64)) ('adrenal cortical carcinoma', 'Disease', (127, 153)) ('I1521', 'Var', (79, 84)) ('E248', 'Var', (111, 115)) ('adrenal cortical carcinoma', 'Disease', 'MESH:D018268', (127, 153)) ('Cushing syndrome', 'Phenotype', 'HP:0003118', (87, 103)) ('C740', 'Var', (155, 159)) ('I1520', 'Var', (72, 77)) ('E260', 'Var', (66, 70)) ('carcinoma', 'Phenotype', 'HP:0030731', (144, 153)) ('primary aldosteronism', 'Disease', (43, 64)) ('E249', 'Var', (117, 121)) ('Cushing syndrome', 'Disease', (87, 103)) ('adrenal cortical carcinoma', 'Phenotype', 'HP:0006744', (127, 153)) 99381 32207276 Among them, metastatic PPGLs were defined as being present in cases with the diagnostic codes of C741, C749, and C755 at least once. ('PPGLs', 'Chemical', '-', (23, 28)) ('C749', 'Var', (103, 107)) ('metastatic PPGLs', 'Disease', (12, 28)) ('C741', 'Var', (97, 101)) ('PGLs', 'Phenotype', 'HP:0002668', (24, 28)) ('C755', 'Var', (113, 117)) 99383 32207276 Comorbidities were defined if the following diagnostic codes were present as at least two principal or secondary diagnoses, regardless of the date of diagnosis: cerebrovascular disease (I60, I61, I62, I63, I64, I67), cardiovascular disease (I11, I20, I21, I25.1, I50), aortic disease (I71), diabetes mellitus (E10, E11, E12, E13, E14), osteoporosis (M80, M81), and fractures (M48.4, S42.2, S52.0, S52.1, S52.2, S72.0, S72.1, S72.2, S32.0, S32.1, S32.2, S32.5, S22.0). ('cerebrovascular disease', 'Disease', 'MESH:D002561', (161, 184)) ('diabetes mellitus', 'Phenotype', 'HP:0000819', (291, 308)) ('M80', 'Var', (350, 353)) ('M48.4', 'Var', (376, 381)) ('I71', 'Var', (285, 288)) ('I11', 'Var', (241, 244)) ('aortic disease', 'Disease', 'MESH:D001018', (269, 283)) ('E10', 'Var', (310, 313)) ('cerebrovascular disease', 'Disease', (161, 184)) ('osteoporosis', 'Disease', (336, 348)) ('cardiovascular disease', 'Disease', (217, 239)) ('I60', 'Var', (186, 189)) ('osteoporosis', 'Phenotype', 'HP:0000939', (336, 348)) ('diabetes mellitus', 'Disease', (291, 308)) ('fractures', 'Disease', (365, 374)) ('osteoporosis', 'Disease', 'MESH:D010024', (336, 348)) ('aortic disease', 'Disease', (269, 283)) ('fractures', 'Disease', 'MESH:D050723', (365, 374)) ('cardiovascular disease', 'Phenotype', 'HP:0001626', (217, 239)) ('cardiovascular disease', 'Disease', 'MESH:D002318', (217, 239)) ('diabetes mellitus', 'Disease', 'MESH:D003920', (291, 308)) 99406 32207276 In multivariable Cox regression models adjusted for age, sex, cerebrovascular disease, cardiovascular disease, diabetes mellitus, and fractures, metastatic PPGLs at diagnosis or during the follow-up period were associated with a 2.40-fold higher risk of mortality than non-metastatic PPGLs (95% CI, 1.38 to 4.17; P=0.002) (Table 2). ('metastatic PPGLs', 'Var', (145, 161)) ('fractures', 'Disease', (134, 143)) ('diabetes mellitus', 'Disease', (111, 128)) ('cardiovascular disease', 'Disease', (87, 109)) ('PPGLs', 'Chemical', '-', (284, 289)) ('cerebrovascular disease', 'Disease', 'MESH:D002561', (62, 85)) ('PPGLs', 'Chemical', '-', (156, 161)) ('mortality', 'Disease', 'MESH:D003643', (254, 263)) ('PGLs', 'Phenotype', 'HP:0002668', (157, 161)) ('cardiovascular disease', 'Phenotype', 'HP:0001626', (87, 109)) ('fractures', 'Disease', 'MESH:D050723', (134, 143)) ('PGLs', 'Phenotype', 'HP:0002668', (285, 289)) ('cerebrovascular disease', 'Disease', (62, 85)) ('diabetes mellitus', 'Disease', 'MESH:D003920', (111, 128)) ('cardiovascular disease', 'Disease', 'MESH:D002318', (87, 109)) ('mortality', 'Disease', (254, 263)) ('diabetes mellitus', 'Phenotype', 'HP:0000819', (111, 128)) 99471 29794126 PCC resection led to improvement of cardiomyopathy in 96% of patients, while lack of resection was associated with death or cardiac transplantation in 44% patients. ('improvement', 'PosReg', (21, 32)) ('PCC', 'Gene', '1421', (0, 3)) ('patients', 'Species', '9606', (61, 69)) ('PCC', 'Gene', (0, 3)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (36, 50)) ('patients', 'Species', '9606', (155, 163)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (36, 50)) ('death', 'Disease', 'MESH:D003643', (115, 120)) ('death', 'Disease', (115, 120)) ('resection', 'Var', (4, 13)) ('cardiomyopathy', 'Disease', (36, 50)) 99488 29794126 Mutations in succinate dehydrogenase subunits A-D (SDHx) were thought to have almost complete penetrance for PPGL. ('Mutations', 'Var', (0, 9)) ('SDHx', 'Chemical', '-', (51, 55)) ('SDHx', 'Gene', (51, 55)) 99491 29794126 The second study reported outcomes of annual surveillance imaging in SDHB mutation carriers: in 27 index patients, 51 PPGLs (five metachronous) were detected. ('mutation', 'Var', (74, 82)) ('patients', 'Species', '9606', (105, 113)) ('SDHB', 'Gene', (69, 73)) 99498 29794126 Those with RET, VHL or NF1 germline mutations more often had minimally invasive surgery with cortical-sparing adrenalectomy, whereas seven out of eight (87.5%) patients with SDHB mutation had an open approach. ('RET', 'Gene', '5979', (11, 14)) ('patients', 'Species', '9606', (160, 168)) ('minimally', 'Disease', (61, 70)) ('NF1', 'Gene', (23, 26)) ('RET', 'Gene', (11, 14)) ('NF1', 'Gene', '4763', (23, 26)) ('VHL', 'Disease', (16, 19)) ('VHL', 'Disease', 'MESH:D006623', (16, 19)) ('germline mutations', 'Var', (27, 45)) 99506 29794126 Data from The Cancer Genome Atlas (TCGA) have already allowed PPGL to be included into several pan-cancer analyses; the first underscore that PPGL genomes exhibit relatively low number of somatic mutations as well as copy number segmentations compared to other tumors. ('PPGL', 'Gene', (142, 146)) ('tumor', 'Phenotype', 'HP:0002664', (261, 266)) ('copy number segmentations', 'Var', (217, 242)) ('cancer', 'Disease', 'MESH:D009369', (99, 105)) ('tumors', 'Disease', (261, 267)) ('tumors', 'Disease', 'MESH:D009369', (261, 267)) ('tumors', 'Phenotype', 'HP:0002664', (261, 267)) ('cancer', 'Disease', (99, 105)) ('Cancer Genome Atlas', 'Disease', (14, 33)) ('Cancer', 'Phenotype', 'HP:0002664', (14, 20)) ('Cancer Genome Atlas', 'Disease', 'MESH:D009369', (14, 33)) ('cancer', 'Phenotype', 'HP:0002664', (99, 105)) 99508 29794126 Smaller studies complement the TCGA effort by demonstrating activating FGFR1 mutations as well as different landscapes of aneuploidy in SDHB versus SDHAF2, SDHD and VHL-related cases. ('activating', 'PosReg', (60, 70)) ('FGFR1', 'Gene', (71, 76)) ('SDHD', 'Gene', (156, 160)) ('aneuploidy', 'Disease', 'MESH:D000782', (122, 132)) ('VHL', 'Disease', 'MESH:D006623', (165, 168)) ('FGFR1', 'Gene', '2260', (71, 76)) ('SDHAF2', 'Gene', '54949', (148, 154)) ('VHL', 'Disease', (165, 168)) ('SDHAF2', 'Gene', (148, 154)) ('mutations', 'Var', (77, 86)) ('SDHB', 'Gene', (136, 140)) ('aneuploidy', 'Disease', (122, 132)) ('SDHD', 'Gene', '6392', (156, 160)) 99512 29794126 Two mechanisms underlying increased TERT expression were identified: TERT structural rearrangements and TERT promoter hypermethylation. ('TERT', 'Gene', '7015', (36, 40)) ('hypermethylation', 'Var', (118, 134)) ('TERT', 'Gene', (104, 108)) ('TERT', 'Gene', '7015', (104, 108)) ('TERT', 'Gene', (69, 73)) ('increased', 'PosReg', (26, 35)) ('TERT', 'Gene', '7015', (69, 73)) ('TERT', 'Gene', (36, 40)) 99515 29794126 Effect of the following agents was suggested: HSP90 inhibitor (NVP-AUY922) in PC12 cells, anthracyclines through inhibition of the hypoxia signaling pathway in mouse PCC cell lines and proteasome inhibitor (Bortezomib) in mouse PCC cell lines. ('PCC', 'Gene', (228, 231)) ('hypoxia', 'Disease', (131, 138)) ('Bortezomib', 'Chemical', 'MESH:D000069286', (207, 217)) ('PC12', 'CellLine', 'CVCL:0481', (78, 82)) ('HSP90', 'Gene', '299331', (46, 51)) ('anthracyclines', 'Chemical', 'MESH:D018943', (90, 104)) ('PCC', 'Gene', '1421', (166, 169)) ('PCC', 'Gene', '1421', (228, 231)) ('inhibition', 'NegReg', (113, 123)) ('anthracyclines', 'Var', (90, 104)) ('HSP90', 'Gene', (46, 51)) ('mouse', 'Species', '10090', (222, 227)) ('hypoxia', 'Disease', 'MESH:D000860', (131, 138)) ('mouse', 'Species', '10090', (160, 165)) ('PCC', 'Gene', (166, 169)) 99517 29794126 This may have to be re-challenged as the mTORC1 complex was found to be overactivated in PPGL both of the head and neck and those harboring SDHx mutations. ('mTORC1', 'Gene', '382056', (41, 47)) ('mutations', 'Var', (145, 154)) ('SDHx', 'Gene', (140, 144)) ('PPGL', 'Gene', (89, 93)) ('SDHx', 'Chemical', '-', (140, 144)) ('mTORC1', 'Gene', (41, 47)) ('overactivated', 'PosReg', (72, 85)) 99534 29794126 correlated outcome to somatic mutation status among 142 patients with APA; KCNJ5 mutations in young patients with APA emerged as a prognostic biomarker indicating resolution of hypertension. ('patients', 'Species', '9606', (56, 64)) ('PA', 'Phenotype', 'HP:0011736', (115, 117)) ('hypertension', 'Disease', (177, 189)) ('PA', 'Phenotype', 'HP:0011736', (71, 73)) ('hypertension', 'Phenotype', 'HP:0000822', (177, 189)) ('patients', 'Species', '9606', (100, 108)) ('KCNJ5', 'Gene', (75, 80)) ('mutations', 'Var', (81, 90)) ('hypertension', 'Disease', 'MESH:D006973', (177, 189)) ('KCNJ5', 'Gene', '3762', (75, 80)) 99536 29794126 Following the discovery of somatic mutations in KCNJ5 (potassium channel) as a driver of APA, macrolides were shown to selectively inhibit mutant KCNJ5 opening, which might provide the option for improved diagnosis and treatment. ('KCNJ5', 'Gene', (48, 53)) ('inhibit', 'NegReg', (131, 138)) ('KCNJ5', 'Gene', (146, 151)) ('macrolides', 'Chemical', 'MESH:D018942', (94, 104)) ('KCNJ5', 'Gene', '3762', (48, 53)) ('KCNJ5', 'Gene', '3762', (146, 151)) ('mutant', 'Var', (139, 145)) ('PA', 'Phenotype', 'HP:0011736', (90, 92)) ('opening', 'MPA', (152, 159)) ('mutations', 'Var', (35, 44)) 99542 29794126 Aldosterone-driver gene somatic mutations were detected in 21 of 26 (81%) of CYP11B2-positive cortical micronodules. ('CYP11B2', 'Gene', (77, 84)) ('CYP11B2', 'Gene', '1585', (77, 84)) ('Aldosterone-driver gene', 'Gene', (0, 23)) ('mutations', 'Var', (32, 41)) 99546 29794126 The molecular etiology behind a rare subtype of Cushing syndrome caused by ectopic expression of glucose-dependent insulinotropic polypeptide receptor (GIPR) was unveiled; microduplications at chromosome 19q13 that contain the GIPR locus. ('GIPR', 'Gene', (152, 156)) ('GIPR', 'Gene', '2696', (152, 156)) ('microduplications at', 'Var', (172, 192)) ('Cushing syndrome', 'Disease', 'MESH:D003480', (48, 64)) ('glucose-dependent insulinotropic polypeptide receptor', 'Gene', '2696', (97, 150)) ('Cushing syndrome', 'Phenotype', 'HP:0003118', (48, 64)) ('caused', 'Reg', (65, 71)) ('GIPR', 'Gene', '2696', (227, 231)) ('GIPR', 'Gene', (227, 231)) ('Cushing syndrome', 'Disease', (48, 64)) 99563 29794126 A study of 60 pediatric ACCs investigated the impact of germline TP53 mutations and showed similar prognosis and outcome regardless of mutation status. ('mutations', 'Var', (70, 79)) ('TP53', 'Gene', '7157', (65, 69)) ('ACCs', 'Gene', (24, 28)) ('TP53', 'Gene', (65, 69)) ('ACCs', 'Gene', '84680', (24, 28)) ('germline', 'Var', (56, 64)) ('ACC', 'Phenotype', 'HP:0006744', (24, 27)) 99568 29794126 Traces of MUTYH deficiency can be found in tumor mutatomes through a unique signature of DNA mutations. ('DNA', 'Gene', (89, 92)) ('mutations', 'Var', (93, 102)) ('tumor', 'Disease', 'MESH:D009369', (43, 48)) ('MUTYH', 'Gene', (10, 15)) ('MUTYH', 'Gene', '4595', (10, 15)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('tumor', 'Disease', (43, 48)) 99575 29794126 VAV2 was mentioned earlier as a prognostic factor, this study revealed molecular mechanisms involved and suggest that blocking VAV2 may be a new therapeutic approach to inhibit metastatic progression. ('VAV2', 'Gene', '7410', (0, 4)) ('inhibit', 'NegReg', (169, 176)) ('VAV2', 'Gene', (127, 131)) ('VAV2', 'Gene', (0, 4)) ('blocking', 'Var', (118, 126)) ('metastatic progression', 'CPA', (177, 199)) ('VAV2', 'Gene', '7410', (127, 131)) 99591 28135248 In this group, telomere length positively correlated with TP53 and RB1 mutations. ('TP53', 'Gene', '7157', (58, 62)) ('TP53', 'Gene', (58, 62)) ('RB1', 'Gene', (67, 70)) ('mutations', 'Var', (71, 80)) ('correlated', 'Reg', (42, 52)) ('telomere length', 'MPA', (15, 30)) 99596 28135248 The telomerase enzymatic subunit is encoded by TERT, and while it is transcriptionally silent in most non-neoplastic cells, reactivation may endow a small population of cells with the ability to survive crisis, at which point they become immortalized. ('TERT', 'Gene', (47, 51)) ('reactivation', 'Var', (124, 136)) ('TERT', 'Gene', '7015', (47, 51)) ('ran', 'Gene', (70, 73)) ('ran', 'Gene', '5901', (70, 73)) 99600 28135248 Deactivating mutations in ATRX and its binding partner DAXX were found tightly correlated with long telomeres in pancreatic neuroendocrine tumors and glioma. ('ATRX', 'Gene', (26, 30)) ('long telomeres', 'MPA', (95, 109)) ('DAXX', 'Gene', (55, 59)) ('Deactivating mutations', 'Var', (0, 22)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (124, 145)) ('tumor', 'Phenotype', 'HP:0002664', (139, 144)) ('ATRX', 'Gene', '546', (26, 30)) ('glioma', 'Disease', 'MESH:D005910', (150, 156)) ('glioma', 'Disease', (150, 156)) ('tumors', 'Phenotype', 'HP:0002664', (139, 145)) ('glioma', 'Phenotype', 'HP:0009733', (150, 156)) ('correlated', 'Reg', (79, 89)) ('pancreatic neuroendocrine tumors', 'Disease', (113, 145)) ('DAXX', 'Gene', '1616', (55, 59)) ('pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (113, 145)) 99601 28135248 Recent evidence suggested that loss of ATRX may contribute to ALT by promoting sustained sister telomere cohesion and chromatid exchange. ('ATRX', 'Gene', (39, 43)) ('promoting', 'PosReg', (69, 78)) ('ATRX', 'Gene', '546', (39, 43)) ('loss', 'Var', (31, 35)) ('contribute', 'Reg', (48, 58)) ('ALT', 'Disease', (62, 65)) ('chromatid exchange', 'CPA', (118, 136)) 99613 28135248 We curated a core sample set that consisted of 473 T/N pairs with the most comprehensive molecular profiling and an extended set that consisted of 6,835 T/N pairs with varying numbers of cases profiled by each individual platform (Figure 1a, Online Methods). ('835 T/N', 'Var', (149, 156)) ('835 T/N', 'SUBSTITUTION', 'None', (149, 156)) ('473 T/N', 'Var', (47, 54)) ('473 T/N', 'SUBSTITUTION', 'None', (47, 54)) 99614 28135248 TERT promoter (TERTp) mutations, predominantly C250T and C228T, were detected in 27% of the extended set for the cases where TERTp status could be determined (n=1,581). ('C250T', 'Var', (47, 52)) ('TERT', 'Gene', '7015', (15, 19)) ('C250T', 'Mutation', 'c.250C>T', (47, 52)) ('C228T', 'Mutation', 'c.228C>T', (57, 62)) ('TERTp', 'Gene', (125, 130)) ('TERT', 'Gene', (0, 4)) ('TERT', 'Gene', '7015', (0, 4)) ('TERTp', 'Gene', '7015', (125, 130)) ('TERTp', 'Gene', (15, 20)) ('TERT', 'Gene', (125, 129)) ('C228T', 'Var', (57, 62)) ('TERTp', 'Gene', '7015', (15, 20)) ('TERT', 'Gene', '7015', (125, 129)) ('TERT', 'Gene', (15, 19)) 99615 28135248 In agreement with previous reports; high incidence of TERTp mutations was found in bladder cancer (42/60, 70%), liver cancer (73/162, 45%), melanoma (93/129, 72%), lower grade glioma (127/285, 45%) and glioblastoma (25/28, 89%, Supplementary Figure 4a). ('glioblastoma', 'Disease', 'MESH:D005909', (202, 214)) ('melanoma', 'Disease', 'MESH:D008545', (140, 148)) ('TERTp', 'Gene', (54, 59)) ('TERTp', 'Gene', '7015', (54, 59)) ('glioma', 'Disease', (176, 182)) ('glioma', 'Disease', 'MESH:D005910', (176, 182)) ('glioblastoma', 'Disease', (202, 214)) ('glioblastoma', 'Phenotype', 'HP:0012174', (202, 214)) ('liver cancer', 'Disease', 'MESH:D006528', (112, 124)) ('glioma', 'Phenotype', 'HP:0009733', (176, 182)) ('cancer', 'Phenotype', 'HP:0002664', (118, 124)) ('melanoma', 'Phenotype', 'HP:0002861', (140, 148)) ('melanoma', 'Disease', (140, 148)) ('bladder cancer', 'Disease', 'MESH:D001749', (83, 97)) ('liver cancer', 'Phenotype', 'HP:0002896', (112, 124)) ('bladder cancer', 'Disease', (83, 97)) ('liver cancer', 'Disease', (112, 124)) ('bladder cancer', 'Phenotype', 'HP:0009725', (83, 97)) ('cancer', 'Phenotype', 'HP:0002664', (91, 97)) ('mutations', 'Var', (60, 69)) 99621 28135248 In the majority of TERTp structural variants (65%), at least one predicted super enhancer was found to directly overlap with the juxtaposed position (Supplementary Table 3). ('TERTp', 'Gene', (19, 24)) ('TERTp', 'Gene', '7015', (19, 24)) ('variants', 'Var', (36, 44)) 99630 28135248 Taken together, we found somatic TERT alterations including TERTp mutations, TERT amplifications and TERT structural variants involving gene promoter or gene body in 32% of core set samples. ('TERT', 'Gene', '7015', (101, 105)) ('TERT', 'Gene', (33, 37)) ('TERT', 'Gene', '7015', (33, 37)) ('TERT', 'Gene', (77, 81)) ('TERT', 'Gene', '7015', (60, 64)) ('TERT', 'Gene', '7015', (77, 81)) ('variants', 'Var', (117, 125)) ('TERT', 'Gene', (101, 105)) ('TERTp', 'Gene', (60, 65)) ('TERTp', 'Gene', '7015', (60, 65)) ('TERT', 'Gene', (60, 64)) 99636 28135248 As previously described in pediatric brain tumors, TERT promoter probe cg11625005 demonstrated a strong correlation with TERT expression (Rho=0.52, FDR<0.0001). ('tumors', 'Phenotype', 'HP:0002664', (43, 49)) ('brain tumors', 'Phenotype', 'HP:0030692', (37, 49)) ('pediatric brain tumors', 'Disease', (27, 49)) ('TERT', 'Gene', (51, 55)) ('correlation', 'Interaction', (104, 115)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('cg11625005', 'Var', (71, 81)) ('TERT', 'Gene', '7015', (51, 55)) ('TERT', 'Gene', (121, 125)) ('TERT', 'Gene', '7015', (121, 125)) ('pediatric brain tumors', 'Disease', 'MESH:D001932', (27, 49)) 99641 28135248 TERTp methylation (two-sided t-test P<0.05) and TERTp mutations (two-sided t-test P<0.0001) were associated with relative TL shortening compared to other types of TERT alterations (Supplementary Figure 5c). ('TERTp', 'Gene', '7015', (0, 5)) ('TERT', 'Gene', '7015', (163, 167)) ('TERTp', 'Gene', (48, 53)) ('TERTp', 'Gene', '7015', (48, 53)) ('mutations', 'Var', (54, 63)) ('TERT', 'Gene', (0, 4)) ('TERT', 'Gene', (48, 52)) ('shortening', 'NegReg', (125, 135)) ('TERT', 'Gene', '7015', (0, 4)) ('methylation', 'Var', (6, 17)) ('TERT', 'Gene', (163, 167)) ('TERT', 'Gene', '7015', (48, 52)) ('TERTp', 'Gene', (0, 5)) 99645 28135248 Focal TERC amplifications were associated with increased TERC expression (two-sided t-test P<0.0001) (Supplementary Figure 5d), and were enriched in TERT expressing samples (Odds Ratio (OR) 2.59, Fisher's Exact P<0.0001). ('TERT', 'Gene', '7015', (149, 153)) ('TERC', 'Gene', (57, 61)) ('TERC', 'Gene', (6, 10)) ('amplifications', 'Var', (11, 25)) ('TERC', 'Gene', '7012', (57, 61)) ('increased', 'PosReg', (47, 56)) ('TERT', 'Gene', (149, 153)) ('TERC', 'Gene', '7012', (6, 10)) 99655 28135248 TERC amplification was additionally associated with higher telomerase signature scores compared to non-amplified samples (two-sided t-test, P<0.0001), which may in part be explained by the co-expression patterns of TERT and TERC. ('TERT', 'Gene', '7015', (215, 219)) ('amplification', 'Var', (5, 18)) ('TERC', 'Gene', (0, 4)) ('TERC', 'Gene', (224, 228)) ('higher', 'PosReg', (52, 58)) ('telomerase signature scores', 'MPA', (59, 86)) ('TERC', 'Gene', '7012', (0, 4)) ('TERT', 'Gene', (215, 219)) ('TERC', 'Gene', '7012', (224, 228)) 99658 28135248 We found alterations of ATRX and IDH1 as the most significantly associated with relative TL elongation (both FDR<0.0001; Figure 3a). ('associated', 'Reg', (64, 74)) ('relative TL elongation', 'CPA', (80, 102)) ('IDH1', 'Gene', (33, 37)) ('ATRX', 'Gene', (24, 28)) ('alterations', 'Var', (9, 20)) ('IDH1', 'Gene', '3417', (33, 37)) ('ATRX', 'Gene', '546', (24, 28)) 99659 28135248 Since IDH1 mutations frequently co-occur with ATRX in glioma, we tested a model with both tumor type and IDH1 as covariates, and found IDH1 no longer associated with TL ratio (two-sided t-test P=0.15). ('associated', 'Reg', (150, 160)) ('glioma', 'Disease', 'MESH:D005910', (54, 60)) ('mutations', 'Var', (11, 20)) ('IDH1', 'Gene', '3417', (6, 10)) ('ATRX', 'Gene', '546', (46, 50)) ('IDH1', 'Gene', (135, 139)) ('IDH1', 'Gene', (105, 109)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('tumor', 'Disease', (90, 95)) ('glioma', 'Phenotype', 'HP:0009733', (54, 60)) ('IDH1', 'Gene', '3417', (135, 139)) ('IDH1', 'Gene', '3417', (105, 109)) ('glioma', 'Disease', (54, 60)) ('ATRX', 'Gene', (46, 50)) ('IDH1', 'Gene', (6, 10)) ('TL ratio', 'MPA', (166, 174)) ('tumor', 'Disease', 'MESH:D009369', (90, 95)) 99661 28135248 Alterations of the VHL were found to be associated with relative TL shortening (TL ratio 0.7, 95%CI 0.61-0.8, FDR<0.0001). ('relative TL shortening', 'MPA', (56, 78)) ('Alterations', 'Var', (0, 11)) ('VHL', 'Disease', 'MESH:D006623', (19, 22)) ('VHL', 'Disease', (19, 22)) 99664 28135248 A linear regression model showed that in addition to older age, positive TERRA expression, TP53 deletion, TP53 mutations, ATRX deletion, ATRX structural variants and absent/undetectable TERT expression were all independently associated with relative TL elongation (Figure 3b-c). ('mutations', 'Var', (111, 120)) ('ATRX', 'Gene', (137, 141)) ('TP53', 'Gene', (91, 95)) ('positive', 'PosReg', (64, 72)) ('TP53', 'Gene', '7157', (106, 110)) ('ATRX', 'Gene', (122, 126)) ('ATRX', 'Gene', '546', (122, 126)) ('TP53', 'Gene', '7157', (91, 95)) ('ATRX', 'Gene', '546', (137, 141)) ('deletion', 'Var', (127, 135)) ('deletion', 'Var', (96, 104)) ('variants', 'Var', (153, 161)) ('associated', 'Reg', (225, 235)) ('TERT', 'Gene', (186, 190)) ('relative TL elongation', 'CPA', (241, 263)) ('TERT', 'Gene', '7015', (186, 190)) ('TP53', 'Gene', (106, 110)) 99665 28135248 Although DAXX has been linked to telomere length and ALT, DAXX mutations (n=51/6,835) and deletions (n=5/6,835) did not associate with TL. ('mutations', 'Var', (63, 72)) ('DAXX', 'Gene', (58, 62)) ('DAXX', 'Gene', '1616', (9, 13)) ('deletions', 'Var', (90, 99)) ('DAXX', 'Gene', (9, 13)) ('DAXX', 'Gene', '1616', (58, 62)) 99667 28135248 In addition to non-synonymous mutations and deletions, we detected ATRX structural variants from WGS data in 5% of the core set samples (n=26/473). ('variants', 'Var', (83, 91)) ('ATRX', 'Gene', (67, 71)) ('ATRX', 'Gene', '546', (67, 71)) 99673 28135248 We observed a significant decrease in ATRX expression in samples showing mutations, deletions, fusions and structural variants compared to cases with wild type ATRX (Figure 4a). ('ATRX', 'Gene', '546', (160, 164)) ('decrease', 'NegReg', (26, 34)) ('structural variants', 'Var', (107, 126)) ('ATRX', 'Gene', (38, 42)) ('fusions', 'Var', (95, 102)) ('ATRX', 'Gene', (160, 164)) ('ATRX', 'Gene', '546', (38, 42)) ('expression', 'MPA', (43, 53)) ('mutations', 'Var', (73, 82)) ('deletions', 'Var', (84, 93)) 99674 28135248 We found that all of types of ATRX alteration associated with significantly longer TL compared to wild type ATRX, consistent with the previously established association between ATRX deactivation and ALT (Figure 4b). ('ATRX', 'Gene', (30, 34)) ('ATRX', 'Gene', '546', (177, 181)) ('longer', 'PosReg', (76, 82)) ('ATRX', 'Gene', (108, 112)) ('ATRX', 'Gene', '546', (30, 34)) ('alteration', 'Var', (35, 45)) ('ATRX', 'Gene', '546', (108, 112)) ('ATRX', 'Gene', (177, 181)) 99675 28135248 Recent studies found that ATRX knockdown resulted in elevated levels of telomeric repeat containing RNA (TERRA). ('ATRX', 'Gene', '546', (26, 30)) ('ATRX', 'Gene', (26, 30)) ('knockdown', 'Var', (31, 40)) ('elevated', 'PosReg', (53, 61)) 99676 28135248 Our results demonstrate a significantly higher fraction of TERRA expressing samples in all groups of ATRX altered samples (Figure 4c, Fisher's Exact test P<0.05) compared to the group of ATRX wild type samples. ('ATRX', 'Gene', '546', (187, 191)) ('higher', 'PosReg', (40, 46)) ('TERRA expressing', 'MPA', (59, 75)) ('ATRX', 'Gene', (187, 191)) ('ATRX', 'Gene', (101, 105)) ('ATRX', 'Gene', '546', (101, 105)) ('altered', 'Var', (106, 113)) 99680 28135248 ATRX/DAXX mutations were found in 210 TERT expressing samples, representing 3% of the cohort. ('ATRX', 'Gene', (0, 4)) ('DAXX', 'Gene', '1616', (5, 9)) ('TERT', 'Gene', (38, 42)) ('DAXX', 'Gene', (5, 9)) ('ATRX', 'Gene', '546', (0, 4)) ('TERT', 'Gene', '7015', (38, 42)) ('mutations', 'Var', (10, 19)) 99681 28135248 These events were in majority non-truncating, while ATRX/DAXX mutations in TERT-negative cases were mostly truncating (Supplementary Methods, Supplementary Figure 9a). ('DAXX', 'Gene', (57, 61)) ('non-truncating', 'MPA', (30, 44)) ('TERT', 'Gene', (75, 79)) ('TERT', 'Gene', '7015', (75, 79)) ('DAXX', 'Gene', '1616', (57, 61)) ('ATRX', 'Gene', (52, 56)) ('ATRX', 'Gene', '546', (52, 56)) ('mutations', 'Var', (62, 71)) ('truncating', 'MPA', (107, 117)) 99682 28135248 TERT-expressing ATRX/DAXX mutants showed higher telomerase signature scores compared to ATRX/DAXX altered samples lacking TERT expression (Supplementary Figure 9b). ('TERT', 'Gene', (122, 126)) ('DAXX', 'Gene', '1616', (93, 97)) ('TERT', 'Gene', '7015', (122, 126)) ('DAXX', 'Gene', (21, 25)) ('ATRX', 'Gene', '546', (88, 92)) ('ATRX', 'Gene', '546', (16, 20)) ('TERT', 'Gene', (0, 4)) ('DAXX', 'Gene', (93, 97)) ('TERT', 'Gene', '7015', (0, 4)) ('telomerase signature scores', 'MPA', (48, 75)) ('mutants', 'Var', (26, 33)) ('higher', 'PosReg', (41, 47)) ('DAXX', 'Gene', '1616', (21, 25)) ('ATRX', 'Gene', (88, 92)) ('ATRX', 'Gene', (16, 20)) 99696 28135248 In addition to IDH1 and TP53, RB1 (TL ratio 1.5, 95%CI 1.2-1.87, FDR=0.001) and MDM2 (TL ratio 1.51, 95%CI 1.14-2, FDR=0.01) were revealed to associate with relatively long TLs. ('MDM2', 'Gene', (80, 84)) ('IDH1', 'Gene', (15, 19)) ('TP53', 'Gene', (24, 28)) ('IDH1', 'Gene', '3417', (15, 19)) ('RB1', 'Var', (30, 33)) ('MDM2', 'Gene', '4193', (80, 84)) ('TP53', 'Gene', '7157', (24, 28)) 99697 28135248 The finding of RB1 is consistent with experimental data demonstrating markedly elongated telomeres in Rb1 deficient mice independent of telomerase. ('mice', 'Species', '10090', (116, 120)) ('telomeres', 'CPA', (89, 98)) ('deficient', 'Var', (106, 115)) ('elongated', 'PosReg', (79, 88)) ('Rb1', 'Gene', (102, 105)) ('Rb1', 'Gene', '19645', (102, 105)) 99698 28135248 In the opposite direction, somatic alterations in PBRM1 (TL ratio 0.67, 95%CI 0.55-0.83, FDR=0.001), NRAS (TL ratio 0.68, 95%CI 0.52-0.9, FDR=0.02) and VHL (TL ratio 0.7, 95%CI 0.57-0.85, FDR=0.002) were associated with relative TL shortening (Figure 5d). ('NRAS', 'Gene', (101, 105)) ('PBRM1', 'Gene', (50, 55)) ('alterations', 'Var', (35, 46)) ('PBRM1', 'Gene', '55193', (50, 55)) ('NRAS', 'Gene', '4893', (101, 105)) ('VHL', 'Disease', (152, 155)) ('VHL', 'Disease', 'MESH:D006623', (152, 155)) 99708 28135248 This paradoxical association between TERT promoter methylation and increased TERT expression may result from loss of CTCF binding, a transcriptional repressor reported to bind to the unmethylated TERT promoter. ('TERT', 'Gene', (37, 41)) ('binding', 'Interaction', (122, 129)) ('ran', 'Gene', (134, 137)) ('TERT', 'Gene', (77, 81)) ('TERT', 'Gene', '7015', (37, 41)) ('TERT', 'Gene', '7015', (77, 81)) ('ran', 'Gene', '5901', (134, 137)) ('TERT', 'Gene', (196, 200)) ('loss', 'NegReg', (109, 113)) ('CTCF', 'Gene', (117, 121)) ('TERT', 'Gene', '7015', (196, 200)) ('increased', 'PosReg', (67, 76)) ('methylation', 'Var', (51, 62)) ('CTCF', 'Gene', '10664', (117, 121)) 99709 28135248 Structural TERT variants have been documented and we detected these across several novel cancer types, including sarcoma, prostate and liver carcinoma. ('carcinoma', 'Phenotype', 'HP:0030731', (141, 150)) ('liver carcinoma', 'Phenotype', 'HP:0001402', (135, 150)) ('liver carcinoma', 'Disease', (135, 150)) ('cancer', 'Disease', 'MESH:D009369', (89, 95)) ('prostate', 'Disease', (122, 130)) ('sarcoma', 'Disease', 'MESH:D012509', (113, 120)) ('liver carcinoma', 'Disease', 'MESH:D006528', (135, 150)) ('sarcoma', 'Disease', (113, 120)) ('detected', 'Reg', (53, 61)) ('cancer', 'Disease', (89, 95)) ('TERT', 'Gene', (11, 15)) ('sarcoma', 'Phenotype', 'HP:0100242', (113, 120)) ('TERT', 'Gene', '7015', (11, 15)) ('variants', 'Var', (16, 24)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) 99710 28135248 Hepatitis B virus and adeno-associated virus type 2 integration in TERT was found in about 5% of hepatocellular carcinomas. ('TERT', 'Gene', (67, 71)) ('integration', 'Var', (52, 63)) ('found', 'Reg', (76, 81)) ('TERT', 'Gene', '7015', (67, 71)) ('Hepatitis', 'Phenotype', 'HP:0012115', (0, 9)) ('hepatocellular carcinomas', 'Phenotype', 'HP:0001402', (97, 122)) ('hepatocellular carcinoma', 'Phenotype', 'HP:0001402', (97, 121)) ('Hepatitis B virus', 'Species', '10407', (0, 17)) ('hepatocellular carcinomas', 'Disease', 'MESH:D006528', (97, 122)) ('adeno-associated virus type 2', 'Species', '10804', (22, 51)) ('hepatocellular carcinomas', 'Disease', (97, 122)) ('carcinoma', 'Phenotype', 'HP:0030731', (112, 121)) ('carcinomas', 'Phenotype', 'HP:0030731', (112, 122)) ('Hepatitis B virus', 'Disease', (0, 17)) 99715 28135248 An estimated 5-10% of TERC and TERRA carry the poly-A tails required for oligo-dT primer based RNA sequencing quantification. ('poly-A', 'Chemical', 'MESH:D011061', (47, 53)) ('TERC', 'Gene', '7012', (22, 26)) ('TERC', 'Gene', (22, 26)) ('poly-A tails', 'Var', (47, 59)) 99720 28135248 Deactivation of ATRX and/or DAXX has been related to ALT, and was observed in five percent of the cases in our core set. ('Deactivation', 'Var', (0, 12)) ('ATRX', 'Gene', '546', (16, 20)) ('DAXX', 'Gene', (28, 32)) ('ALT', 'Disease', (53, 56)) ('DAXX', 'Gene', '1616', (28, 32)) ('related', 'Reg', (42, 49)) ('ATRX', 'Gene', (16, 20)) 99721 28135248 A detailed review of ATRX somatic changes revealed a large spectrum of potentially protein truncating changes, including inactivating mutations, deletions and structural variants. ('inactivating mutations', 'Var', (121, 143)) ('protein truncating changes', 'MPA', (83, 109)) ('structural variants', 'Var', (159, 178)) ('ATRX', 'Gene', (21, 25)) ('ATRX', 'Gene', '546', (21, 25)) ('deletions', 'Var', (145, 154)) 99723 28135248 Our analysis reinforced the association of inactivate ATRX/DAXX and ALT, demonstrating relative TL elongation in samples affected by somatic alterations in one of these two genes and a higher frequency of TERRA expression in tumors with these alterations. ('alterations', 'Var', (141, 152)) ('tumor', 'Phenotype', 'HP:0002664', (225, 230)) ('DAXX', 'Gene', (59, 63)) ('tumors', 'Phenotype', 'HP:0002664', (225, 231)) ('ATRX', 'Gene', '546', (54, 58)) ('TL elongation', 'CPA', (96, 109)) ('tumors', 'Disease', 'MESH:D009369', (225, 231)) ('affected', 'Reg', (121, 129)) ('DAXX', 'Gene', '1616', (59, 63)) ('tumors', 'Disease', (225, 231)) ('ATRX', 'Gene', (54, 58)) ('inactivate', 'Var', (43, 53)) 99726 28135248 Such mechanisms may involve some RB1 and TP53 alterations, as somatic changes in these genes were associated with telomere elongation within this group. ('TP53', 'Gene', '7157', (41, 45)) ('TP53', 'Gene', (41, 45)) ('telomere elongation', 'CPA', (114, 133)) ('RB1', 'Gene', (33, 36)) ('changes', 'Var', (70, 77)) ('associated', 'Reg', (98, 108)) 99745 28135248 There was sufficient coverage for TERTp mutation calling in 903 samples, and we detected TERTp mutations in n=183, including C228T (n=128), C250T (n=49), C242/243T (n=5) and C169T (n=1). ('TERTp', 'Gene', '7015', (89, 94)) ('C250T', 'Var', (140, 145)) ('C250T', 'Mutation', 'c.250C>T', (140, 145)) ('TERTp', 'Gene', '7015', (34, 39)) ('C228T', 'Var', (125, 130)) ('detected', 'Reg', (80, 88)) ('C169T', 'Var', (174, 179)) ('C169T', 'Mutation', 'c.169C>T', (174, 179)) ('C242/243T', 'Var', (154, 163)) ('C228T', 'Mutation', 'c.228C>T', (125, 130)) ('TERTp', 'Gene', (89, 94)) ('TERTp', 'Gene', (34, 39)) 99748 28135248 Because we were only interested in variants involving TERT (chr5:1253287-1315162, including 20kb upstream of the TSS) and ATRX (chrX:76760356-77041719), variants not overlapping one of these regions were excluded. ('ATRX', 'Gene', (122, 126)) ('chr5:1253287-1315162', 'STRUCTURAL_ABNORMALITY', 'None', (60, 80)) ('variants', 'Var', (35, 43)) ('TERT', 'Gene', '7015', (54, 58)) ('chrX:76760356-77041719', 'STRUCTURAL_ABNORMALITY', 'None', (128, 150)) ('ATRX', 'Gene', '546', (122, 126)) ('TERT', 'Gene', (54, 58)) 99759 28135248 This analysis found overlapping super-enhancers in 11/17 TERTp structural variants, and this was significantly more than expected by chance (Chi-Square test P=0.001). ('super-enhancers', 'PosReg', (32, 47)) ('variants', 'Var', (74, 82)) ('TERTp', 'Gene', (57, 62)) ('TERTp', 'Gene', '7015', (57, 62)) 99760 28135248 For each structural variant proximal (adjacent to the TERT promoter) and distal breakpoint (juxtaposed to the TERT promoter) we calculated the number of reads mapping to each of three histone marks (H3K27ac, H3K27me3 and H3Kme1) individually within each tissue and cell/type. ('H3Kme1', 'Var', (221, 227)) ('H3K27ac', 'Var', (199, 206)) ('H3K27me3', 'Var', (208, 216)) ('TERT', 'Gene', '7015', (54, 58)) ('TERT', 'Gene', (110, 114)) ('TERT', 'Gene', '7015', (110, 114)) ('TERT', 'Gene', (54, 58)) 99772 28135248 Spearman correlation was used to associate TERT expression and methylation, and to correlate gene expression and TL. ('TERT', 'Gene', (43, 47)) ('methylation', 'Var', (63, 74)) ('TERT', 'Gene', '7015', (43, 47)) 99819 28096810 The tumor size was larger in patients with lymph node metastasis than in those without metastasis. ('tumor', 'Disease', (4, 9)) ('patients', 'Species', '9606', (29, 37)) ('lymph node metastasis', 'Var', (43, 64)) ('larger', 'PosReg', (19, 25)) ('tumor', 'Disease', 'MESH:D009369', (4, 9)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) 99871 26839793 There was expected I-123 MIBG activity in the salivary glands, myocardium, liver, and urinary bladder (Fig. ('I-123', 'Var', (19, 24)) ('MIBG', 'Gene', (25, 29)) ('activity', 'MPA', (30, 38)) ('I-123 MIBG', 'Chemical', '-', (19, 29)) 99973 25215250 The patient was found to have a mutation in the succinyl dehydrogenase B (SDHB) gene, which is causative for SDHB-related hereditary paraganglioma-pheochromocytoma syndrome. ('paraganglioma', 'Phenotype', 'HP:0002668', (133, 146)) ('SDHB', 'Gene', '6390', (109, 113)) ('SDHB', 'Gene', (109, 113)) ('SDHB', 'Gene', '6390', (74, 78)) ('SDHB', 'Gene', (74, 78)) ('patient', 'Species', '9606', (4, 11)) ('paraganglioma-pheochromocytoma syndrome', 'Disease', (133, 172)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (147, 163)) ('mutation', 'Var', (32, 40)) ('paraganglioma-pheochromocytoma syndrome', 'Disease', 'MESH:D010673', (133, 172)) 100006 25215250 The NF1, RET, TMEM127, VHL, MAX, and succinate dehydrogenase (SDHx) genes were sequenced, revealing a p.R27* point mutation in SDHB (c.79C>T) resulting in the change of a cytosine to a thymine and creating a premature stop codon in exon 2. ('RET', 'Gene', '5979', (9, 12)) ('thymine', 'Chemical', 'MESH:D013941', (185, 192)) ('SDHB', 'Gene', (127, 131)) ('SDHx', 'Chemical', '-', (62, 66)) ('VHL', 'Disease', 'MESH:D006623', (23, 26)) ('c.79C>T', 'Var', (133, 140)) ('NF1', 'Gene', '4763', (4, 7)) ('RET', 'Gene', (9, 12)) ('TMEM127', 'Gene', (14, 21)) ('NF1', 'Gene', (4, 7)) ('NF', 'Phenotype', 'HP:0001067', (4, 6)) ('VHL', 'Disease', (23, 26)) ('TMEM127', 'Gene', '55654', (14, 21)) ('SDHB', 'Gene', '6390', (127, 131)) ('p.R27*', 'Var', (102, 108)) ('cytosine', 'Chemical', 'MESH:D003596', (171, 179)) ('p.R27*', 'SUBSTITUTION', 'None', (102, 108)) ('change', 'Reg', (159, 165)) ('c.79C>T', 'Mutation', 'rs74315369', (133, 140)) 100007 25215250 This mutation, known to predispose to PGLs and PCCs, also increases risk for renal cell carcinoma. ('increases', 'Reg', (58, 67)) ('carcinoma', 'Phenotype', 'HP:0030731', (88, 97)) ('renal cell carcinoma', 'Disease', (77, 97)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (77, 97)) ('PCC', 'Phenotype', 'HP:0002666', (47, 50)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (77, 97)) ('mutation', 'Var', (5, 13)) 100010 25215250 Critically, we have referred her immediate family for formal genetic evaluation to screen for SDHB mutations and to provide genetic counseling regarding the implications of the patient's identified cancer syndrome. ('SDHB', 'Gene', (94, 98)) ('cancer syndrome', 'Disease', 'MESH:D009369', (198, 213)) ('mutations', 'Var', (99, 108)) ('cancer', 'Phenotype', 'HP:0002664', (198, 204)) ('cancer syndrome', 'Disease', (198, 213)) ('patient', 'Species', '9606', (177, 184)) ('screen', 'Reg', (83, 89)) ('SDHB', 'Gene', '6390', (94, 98)) 100043 25215250 Our patient was found to harbor a p.R27* point mutation in SDHB (c.79C>T) creating a premature stop codon in exon 2 and establishing the diagnosis of SDHB-related hereditary paraganglioma-pheochromocytoma syndrome. ('c.79C>T', 'Var', (65, 72)) ('paraganglioma', 'Phenotype', 'HP:0002668', (174, 187)) ('p.R27*', 'Var', (34, 40)) ('c.79C>T', 'Mutation', 'rs74315369', (65, 72)) ('p.R27*', 'SUBSTITUTION', 'None', (34, 40)) ('patient', 'Species', '9606', (4, 11)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (188, 204)) ('SDHB', 'Gene', '6390', (150, 154)) ('premature stop codon', 'MPA', (85, 105)) ('paraganglioma-pheochromocytoma syndrome', 'Disease', (174, 213)) ('SDHB', 'Gene', (150, 154)) ('SDHB', 'Gene', '6390', (59, 63)) ('SDHB', 'Gene', (59, 63)) ('paraganglioma-pheochromocytoma syndrome', 'Disease', 'MESH:D010673', (174, 213)) 100044 25215250 SDHB mutations, known to predispose to PGLs and PCCs, also increase risk of renal cell carcinoma. ('renal cell carcinoma', 'Disease', (76, 96)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (76, 96)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (76, 96)) ('increase', 'Reg', (59, 67)) ('mutations', 'Var', (5, 14)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) ('PCC', 'Phenotype', 'HP:0002666', (48, 51)) ('carcinoma', 'Phenotype', 'HP:0030731', (87, 96)) 100045 25215250 Letouze and coworkers recently reported that SDHx mutations lead to excess methylation and epigenetic silencing of key genes involved in neuroendocrine differentiation, thereby contributing to malignant degeneration of cells. ('mutations', 'Var', (50, 59)) ('malignant degeneration of cells', 'CPA', (193, 224)) ('epigenetic silencing', 'MPA', (91, 111)) ('SDHx', 'Gene', (45, 49)) ('SDHx', 'Chemical', '-', (45, 49)) ('excess', 'PosReg', (68, 74)) ('methylation', 'MPA', (75, 86)) ('contributing to', 'Reg', (177, 192)) 100046 25215250 In one series studying patients with SDHB mutations, the mean age at diagnosis was 33.7 years with most patients presenting with extra-adrenal tumors. ('tumors', 'Phenotype', 'HP:0002664', (143, 149)) ('presenting with', 'Reg', (113, 128)) ('patients', 'Species', '9606', (23, 31)) ('SDHB', 'Gene', '6390', (37, 41)) ('patients', 'Species', '9606', (104, 112)) ('SDHB', 'Gene', (37, 41)) ('extra-adrenal tumors', 'Disease', 'MESH:D010236', (129, 149)) ('extra-adrenal tumors', 'Disease', (129, 149)) ('mutations', 'Var', (42, 51)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) 100047 25215250 On reviewing the literature, we found that PCC/PGLs associated with SDHB mutations have been described in children as young as eight years old; however, most pediatric SDHB-associated PCC/PGLs present in adolescence. ('SDHB', 'Gene', '6390', (68, 72)) ('PCC', 'Phenotype', 'HP:0002666', (184, 187)) ('associated', 'Reg', (52, 62)) ('SDHB', 'Gene', (68, 72)) ('PCC', 'Phenotype', 'HP:0002666', (43, 46)) ('SDHB', 'Gene', '6390', (168, 172)) ('PCC/PGLs', 'Disease', (43, 51)) ('children', 'Species', '9606', (106, 114)) ('mutations', 'Var', (73, 82)) ('SDHB', 'Gene', (168, 172)) 100048 25215250 SDHB mutations are known to be highly penetrant, with lifetime risk of PGL/PCC as high as 77-100% and lifetime risk of renal cell carcinoma estimated to be 10-20%. ('PCC', 'Phenotype', 'HP:0002666', (75, 78)) ('PGL/PCC', 'Disease', (71, 78)) ('mutations', 'Var', (5, 14)) ('renal cell carcinoma', 'Disease', (119, 139)) ('SDHB', 'Gene', '6390', (0, 4)) ('carcinoma', 'Phenotype', 'HP:0030731', (130, 139)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (119, 139)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (119, 139)) ('SDHB', 'Gene', (0, 4)) 100050 25215250 In one large-scale study, mean life expectancy was 62 years among patients with hereditary PCC/PGL; however, SDHB mutations are associated with more aggressive disease in terms of early age at diagnosis, higher metastatic potential, recurrence, and the development of other primary malignancies (PCC, PGL, and renal cell carcinomas). ('SDHB', 'Gene', '6390', (109, 113)) ('mutations', 'Var', (114, 123)) ('PGL', 'Disease', (301, 304)) ('metastatic potential', 'CPA', (211, 231)) ('hereditary PCC', 'Disease', 'OMIM:115700', (80, 94)) ('higher', 'PosReg', (204, 210)) ('hereditary PCC', 'Disease', (80, 94)) ('SDHB', 'Gene', (109, 113)) ('associated with', 'Reg', (128, 143)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (310, 331)) ('patients', 'Species', '9606', (66, 74)) ('aggressive disease', 'Disease', (149, 167)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (310, 330)) ('renal cell carcinomas', 'Disease', (310, 331)) ('malignancies', 'Disease', 'MESH:D009369', (282, 294)) ('PCC', 'Phenotype', 'HP:0002666', (91, 94)) ('carcinoma', 'Phenotype', 'HP:0030731', (321, 330)) ('carcinomas', 'Phenotype', 'HP:0030731', (321, 331)) ('PCC', 'Phenotype', 'HP:0002666', (296, 299)) ('aggressive disease', 'Disease', 'MESH:D001523', (149, 167)) ('malignancies', 'Disease', (282, 294)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (310, 331)) 100055 25215250 Genetic evaluation of other family members for SDHB mutations is in progress, along with genetic counseling regarding the implications of the patient's identified cancer syndrome. ('mutations', 'Var', (52, 61)) ('cancer syndrome', 'Disease', 'MESH:D009369', (163, 178)) ('cancer syndrome', 'Disease', (163, 178)) ('SDHB', 'Gene', '6390', (47, 51)) ('SDHB', 'Gene', (47, 51)) ('cancer', 'Phenotype', 'HP:0002664', (163, 169)) ('patient', 'Species', '9606', (142, 149)) 100070 25047265 Identifying genetic changes common to these diversely behaving endocrine tumor types has been shown to play an important role in many types of human cancers. ('cancers', 'Disease', (149, 156)) ('human', 'Species', '9606', (143, 148)) ('cancers', 'Phenotype', 'HP:0002664', (149, 156)) ('endocrine tumor', 'Disease', 'MESH:D004701', (63, 78)) ('endocrine tumor', 'Disease', (63, 78)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (63, 78)) ('cancer', 'Phenotype', 'HP:0002664', (149, 155)) ('genetic changes', 'Var', (12, 27)) ('cancers', 'Disease', 'MESH:D009369', (149, 156)) 100071 25047265 For example, BRAF mutations are highly prevalent in thyroid cancer and other cancers, and are associated with more aggressive disease in thyroid cancer. ('aggressive disease', 'Disease', (115, 133)) ('thyroid cancer', 'Disease', (52, 66)) ('cancers', 'Disease', 'MESH:D009369', (77, 84)) ('cancer', 'Phenotype', 'HP:0002664', (145, 151)) ('aggressive disease', 'Disease', 'MESH:D001523', (115, 133)) ('BRAF', 'Gene', '673', (13, 17)) ('prevalent', 'Reg', (39, 48)) ('thyroid cancer', 'Disease', 'MESH:D013964', (52, 66)) ('BRAF', 'Gene', (13, 17)) ('thyroid cancer', 'Disease', (137, 151)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (52, 66)) ('cancers', 'Phenotype', 'HP:0002664', (77, 84)) ('cancers', 'Disease', (77, 84)) ('associated with', 'Reg', (94, 109)) ('cancer', 'Phenotype', 'HP:0002664', (77, 83)) ('thyroid cancer', 'Disease', 'MESH:D013964', (137, 151)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (137, 151)) ('cancer', 'Phenotype', 'HP:0002664', (60, 66)) ('mutations', 'Var', (18, 27)) 100072 25047265 SDHB mutations were initially identified in familial paraganglioma, but were later found to be prevalent in kidney cancers and gastrointestinal stromal tumors, and recently pituitary tumors. ('cancers', 'Phenotype', 'HP:0002664', (115, 122)) ('pituitary tumors', 'Disease', 'MESH:D010911', (173, 189)) ('tumor', 'Phenotype', 'HP:0002664', (183, 188)) ('kidney cancers', 'Phenotype', 'HP:0009726', (108, 122)) ('SDHB', 'Gene', (0, 4)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (127, 158)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (127, 158)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (44, 66)) ('prevalent', 'Reg', (95, 104)) ('pituitary tumors', 'Disease', (173, 189)) ('paraganglioma', 'Phenotype', 'HP:0002668', (53, 66)) ('mutations', 'Var', (5, 14)) ('identified', 'Reg', (30, 40)) ('gastrointestinal stromal tumors', 'Disease', (127, 158)) ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('familial paraganglioma', 'Disease', (44, 66)) ('kidney cancers', 'Disease', 'MESH:D007680', (108, 122)) ('cancer', 'Phenotype', 'HP:0002664', (115, 121)) ('kidney cancers', 'Disease', (108, 122)) ('SDHB', 'Gene', '6390', (0, 4)) ('tumors', 'Phenotype', 'HP:0002664', (183, 189)) ('tumors', 'Phenotype', 'HP:0002664', (152, 158)) 100089 25047265 The human papillary thyroid cancer (TPC-1) cell line was maintained in DMEM supplemented with FBS, penicillin (100 U/ml), streptomycin (100 microg/ml), fungizone (250 ng/ml), TSH (10 I.U/L), and insulin (10 microg/ml). ('250 ng/ml', 'Var', (163, 172)) ('human', 'Species', '9606', (4, 9)) ('TPC-1', 'Gene', (36, 41)) ('DMEM', 'Chemical', '-', (71, 75)) ('cancer', 'Phenotype', 'HP:0002664', (28, 34)) ('FBS', 'Disease', (94, 97)) ('penicillin', 'Chemical', 'MESH:D010406', (99, 109)) ('papillary thyroid cancer', 'Disease', (10, 34)) ('papillary thyroid cancer', 'Disease', 'MESH:D000077273', (10, 34)) ('FBS', 'Disease', 'MESH:D005198', (94, 97)) ('insulin', 'Gene', (195, 202)) ('TPC-1', 'Gene', '53373', (36, 41)) ('fungizone', 'Chemical', 'MESH:D000666', (152, 161)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (20, 34)) ('streptomycin', 'Chemical', 'MESH:D013307', (122, 134)) ('insulin', 'Gene', '3630', (195, 202)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (10, 34)) ('TSH', 'Chemical', '-', (175, 178)) 100100 25047265 The PCR primers and probes for ZNF367 (Hs00400665_m1), ITGA3 (Hs01076873_m1), and GAPDH (Hs_99999905_m1) were obtained from Applied Biosystems. ('ITGA3', 'Gene', (55, 60)) ('Hs00400665_m1', 'Var', (39, 52)) ('Hs_99999905_m1', 'Var', (89, 103)) ('GAPDH', 'Gene', '2597', (82, 87)) ('Hs01076873_m1', 'Var', (62, 75)) ('ITGA3', 'Gene', '3675', (55, 60)) ('ZNF367', 'Gene', (31, 37)) ('GAPDH', 'Gene', (82, 87)) 100113 25047265 The mutant construct of ZNF367 3'UTR was obtained by introducing the mutation into the first three nucleotides of the seed region (143-150, GCTGCTA -- CGAGCTA) for miR-195. ('mutation', 'Var', (69, 77)) ('miR-195', 'Gene', '406971', (164, 171)) ('miR-195', 'Gene', (164, 171)) 100114 25047265 Wild-type ZNF367 3'UTR or mutant ZNF367 3'UTR and the empty 3'UTR vector with pre-miR-195 or pre-NC were co-transfected into SW13 cells (Switchgear Genomics). ('miR-195', 'Gene', '406971', (82, 89)) ('ZNF367', 'Gene', (33, 39)) ('SW13', 'CellLine', 'CVCL:0542', (125, 129)) ('mutant', 'Var', (26, 32)) ('miR-195', 'Gene', (82, 89)) 100125 25047265 ZNF367 knockdown in SW13 cells, increased cellular proliferation (30-40%) in vitro and (3.5-fold) in vivo (p<0.05; Figure 2). ('SW13', 'CellLine', 'CVCL:0542', (20, 24)) ('cellular proliferation', 'CPA', (42, 64)) ('increased', 'PosReg', (32, 41)) ('ZNF367', 'Gene', (0, 6)) ('knockdown', 'Var', (7, 16)) 100127 25047265 The knockdown had a similar effect on the cellular invasion and migration of BD140A, TPC-1, and HEK293 cell lines (p<0.05; Figure 3, B-D). ('TPC-1', 'Gene', (85, 90)) ('cellular invasion', 'CPA', (42, 59)) ('HEK293', 'CellLine', 'CVCL:0045', (96, 102)) ('TPC-1', 'Gene', '53373', (85, 90)) ('migration', 'CPA', (64, 73)) ('knockdown', 'Var', (4, 13)) 100129 25047265 We found increased cellular adhesion, with ZNF367 knockdown, to Laminin I (two-three-fold high) and fibrinogen (three-six-fold high) (p<0.05; Figure 3H). ('fibrinogen', 'Gene', '2244', (100, 110)) ('fibrinogen', 'Gene', (100, 110)) ('ZNF367', 'Gene', (43, 49)) ('knockdown', 'Var', (50, 59)) ('increased', 'PosReg', (9, 18)) ('cellular adhesion', 'CPA', (19, 36)) ('Laminin', 'Protein', (64, 71)) 100131 25047265 Using genome-wide mRNA expression analysis in cells transfected with ZNF367 and negative control siRNAs, we identified two candidate genes (ITGA3, serpin peptidase inhibitor, clade B (ovalbumin), member 9 [SERPINB9]) possibly regulated by ZNF367 based on applying several filter criteria (FDR<0.25, fold-change>1.5, common to all siRNA knockdown, and strong correlation in expression in human tumor samples) (Figure S3). ('human', 'Species', '9606', (387, 392)) ('tumor', 'Disease', 'MESH:D009369', (393, 398)) ('ITGA3', 'Gene', '3675', (140, 145)) ('tumor', 'Phenotype', 'HP:0002664', (393, 398)) ('tumor', 'Disease', (393, 398)) ('knockdown', 'Var', (336, 345)) ('ITGA3', 'Gene', (140, 145)) 100132 25047265 ITGA3 was chosen as a promising candidate for further study because it plays a significant role in cellular adhesion and invasion and was validated to be upregulated up to 2.5-fold with ZNF367 knockdown (p<0.05; Figure 4A). ('upregulated', 'PosReg', (154, 165)) ('ITGA3', 'Gene', '3675', (0, 5)) ('knockdown', 'Var', (193, 202)) ('ITGA3', 'Gene', (0, 5)) ('invasion', 'CPA', (121, 129)) ('cellular adhesion', 'CPA', (99, 116)) 100134 25047265 ITGA3 protein expression was also increased with siRNA knockdown of ZNF367 (Figure 4C). ('knockdown', 'Var', (55, 64)) ('protein', 'Protein', (6, 13)) ('ITGA3', 'Gene', '3675', (0, 5)) ('expression', 'MPA', (14, 24)) ('ZNF367', 'Gene', (68, 74)) ('ITGA3', 'Gene', (0, 5)) ('increased', 'PosReg', (34, 43)) 100144 25047265 We observed significant reduced luciferase activity with miR-195 overexpression in wild-type 3'UTR compared to negative control and mutated ZNF367 3'UTR-transfected cells (p<0.01; Figure 5E). ('miR-195', 'Gene', (57, 64)) ('miR-195', 'Gene', '406971', (57, 64)) ('reduced', 'NegReg', (24, 31)) ('luciferase', 'Enzyme', (32, 42)) ('mutated', 'Var', (132, 139)) ('activity', 'MPA', (43, 51)) ('overexpression', 'PosReg', (65, 79)) 100149 25047265 Lastly, we demonstrate that dysregulated ZNF367 expression was associated with the loss of miR-195 expression in tumor samples and that this microRNA directly targets ZNF367 and regulates cellular invasion, providing an understanding of the mechanism for dysregulated ZNF367 expression. ('expression', 'MPA', (99, 109)) ('tumor', 'Disease', (113, 118)) ('cellular invasion', 'CPA', (188, 205)) ('dysregulated', 'Var', (28, 40)) ('expression', 'MPA', (48, 58)) ('regulates', 'Reg', (178, 187)) ('tumor', 'Disease', 'MESH:D009369', (113, 118)) ('miR-195', 'Gene', (91, 98)) ('miR-195', 'Gene', '406971', (91, 98)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('loss', 'NegReg', (83, 87)) ('ZNF367', 'Gene', (41, 47)) 100153 25047265 According to the Catalogue of Somatic Mutations in Cancer (COSMIC) database (http://cancer.sanger.ac.uk/cosmic/gene/overview?ln=ZNF367), missense, nonsense, and insertion mutations of ZNF367 have been identified at a low rate (16 of 5,089 samples) in a variety of cancers. ('ZNF367', 'Gene', (184, 190)) ('cancer', 'Disease', 'MESH:D009369', (84, 90)) ('cancers', 'Disease', 'MESH:D009369', (264, 271)) ('cancers', 'Disease', (264, 271)) ('cancer', 'Disease', (84, 90)) ('cancer', 'Phenotype', 'HP:0002664', (264, 270)) ('insertion mutations', 'Var', (161, 180)) ('nonsense', 'Var', (147, 155)) ('Cancer', 'Disease', (51, 57)) ('cancer', 'Phenotype', 'HP:0002664', (84, 90)) ('Cancer', 'Disease', 'MESH:D009369', (51, 57)) ('cancers', 'Phenotype', 'HP:0002664', (264, 271)) ('Cancer', 'Phenotype', 'HP:0002664', (51, 57)) ('missense', 'Var', (137, 145)) ('cancer', 'Disease', (264, 270)) ('cancer', 'Disease', 'MESH:D009369', (264, 270)) 100166 25047265 The increased ITGA3 levels from ZNF367 knockdown and increased adhesion of cells to Laminin I and Fibronectin suggest that decreased ITGA3 may mediate the inhibitory effect of ZNF367 on cellular adhesion and invasion. ('invasion', 'CPA', (208, 216)) ('Fibronectin', 'Gene', '2335', (98, 109)) ('Fibronectin', 'Gene', (98, 109)) ('decreased', 'NegReg', (123, 132)) ('adhesion', 'MPA', (63, 71)) ('knockdown', 'Var', (39, 48)) ('ZNF367', 'Gene', (32, 38)) ('cellular adhesion', 'CPA', (186, 203)) ('ITGA3', 'Gene', '3675', (14, 19)) ('ITGA3', 'Gene', (133, 138)) ('increased', 'PosReg', (53, 62)) ('increased', 'PosReg', (4, 13)) ('ITGA3', 'Gene', (14, 19)) ('ITGA3', 'Gene', '3675', (133, 138)) 100172 33300499 Functional significance of germline EPAS1 variants Mosaic or somatic EPAS1 mutations are associated with a range of phenotypes including pheochromocytoma and/or paraganglioma (PPGL), polycythemia and somatostatinoma. ('associated', 'Reg', (89, 99)) ('PPGL', 'Chemical', '-', (176, 180)) ('polycythemia', 'Phenotype', 'HP:0001901', (183, 195)) ('EPAS1', 'Gene', (36, 41)) ('variants', 'Var', (42, 50)) ('paraganglioma', 'Disease', (161, 174)) ('EPAS1', 'Gene', '2034', (69, 74)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (137, 153)) ('paraganglioma', 'Disease', 'MESH:D010235', (161, 174)) ('somatostatinoma', 'Disease', 'MESH:D013005', (200, 215)) ('somatostatinoma', 'Disease', (200, 215)) ('pheochromocytoma', 'Disease', (137, 153)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (137, 153)) ('polycythemia', 'Disease', (183, 195)) ('polycythemia', 'Disease', 'MESH:D011086', (183, 195)) ('EPAS1', 'Gene', '2034', (36, 41)) ('paraganglioma', 'Phenotype', 'HP:0002668', (161, 174)) ('mutations', 'Var', (75, 84)) ('EPAS1', 'Gene', (69, 74)) 100173 33300499 The pathogenic potential of germline EPAS1 variants however is not well understood. ('variants', 'Var', (43, 51)) ('EPAS1', 'Gene', (37, 42)) ('EPAS1', 'Gene', '2034', (37, 42)) 100174 33300499 We report a number of germline EPAS1 variants occurring in patients with PPGL, including a novel variant c.739C>A (p.Arg247Ser); a previously described variant c.1121T>A (p.Phe374Tyr); several rare variants, c.581A>G (p.His194Arg), c.2353C>A (p.Pro785Thr) and c.2365A>G (p.Ile789Val); a common variant c.2296A>C (p.Thr766Pro). ('c.1121T>A', 'Var', (160, 169)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (115, 126)) ('PPGL', 'Chemical', '-', (73, 77)) ('c.2365A>G', 'Var', (260, 269)) ('c.1121T>A', 'Mutation', 'rs150797491', (160, 169)) ('c.2365A>G', 'Mutation', 'rs749988999', (260, 269)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (171, 182)) ('c.2296A>C', 'Var', (302, 311)) ('c.581A>G', 'Mutation', 'rs570553380', (208, 216)) ('c.2353C>A', 'Var', (232, 241)) ('EPAS1', 'Gene', '2034', (31, 36)) ('patients', 'Species', '9606', (59, 67)) ('p.Thr766Pro', 'Mutation', 'rs59901247', (313, 324)) ('p.Ile789Val', 'Mutation', 'rs749988999', (271, 282)) ('c.2353C>A', 'Mutation', 'rs61518065', (232, 241)) ('c.581A>G', 'Var', (208, 216)) ('p.His194Arg', 'Mutation', 'rs570553380', (218, 229)) ('c.2296A>C', 'Mutation', 'rs59901247', (302, 311)) ('c.739C>A', 'Mutation', 'rs750181129', (105, 113)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (243, 254)) ('PPGL', 'Disease', (73, 77)) ('c.739C>A', 'Var', (105, 113)) ('EPAS1', 'Gene', (31, 36)) 100176 33300499 In transient transfection studies, EPAS1/HIF-2alpha p.Arg247Ser, p.Phe374Tyr and p.Pro785Thr were all stable in normoxia. ('p.Pro785Thr', 'Var', (81, 92)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (52, 63)) ('p.Arg247Ser', 'Var', (52, 63)) ('p.Phe374Tyr', 'Var', (65, 76)) ('EPAS1', 'Gene', '2034', (35, 40)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (65, 76)) ('EPAS1', 'Gene', (35, 40)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (81, 92)) 100177 33300499 In co-immunoprecipitation assays, only the novel variant p.Arg247Ser showed diminished interaction with pVHL. ('pVHL', 'Gene', '7428', (104, 108)) ('pVHL', 'Gene', (104, 108)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (57, 68)) ('interaction', 'Interaction', (87, 98)) ('p.Arg247Ser', 'Var', (57, 68)) ('diminished', 'NegReg', (76, 86)) 100178 33300499 A direct interaction between HIF-2alpha Arg247 and pVHL was confirmed in structural models. ('pVHL', 'Gene', '7428', (51, 55)) ('pVHL', 'Gene', (51, 55)) ('Arg247', 'Var', (40, 46)) ('Arg247', 'Chemical', '-', (40, 46)) ('interaction', 'Interaction', (9, 20)) 100179 33300499 Transactivation was assessed by means of a HRE-containing reporter gene in transiently transfected cells, and significantly higher reporter activity was only observed with EPAS1/HIF-2alpha p.Phe374Tyr and p.Pro785Thr. ('p.Pro785Thr', 'Var', (205, 216)) ('reporter activity', 'MPA', (131, 148)) ('p.Phe374Tyr', 'Var', (189, 200)) ('EPAS1', 'Gene', '2034', (172, 177)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (189, 200)) ('EPAS1', 'Gene', (172, 177)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (205, 216)) ('higher', 'PosReg', (124, 130)) 100180 33300499 In conclusion, three germline EPAS1 variants (c.739C>A (p.Arg247Ser), c.1121T>A (p.Phe374Tyr) and c.2353C>A (p.Pro785Thr)) all have some functional features in common with somatic activating mutations. ('c.1121T>A', 'Mutation', 'rs150797491', (70, 79)) ('c.1121T>A', 'Var', (70, 79)) ('EPAS1', 'Gene', '2034', (30, 35)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (56, 67)) ('EPAS1', 'Gene', (30, 35)) ('c.2353C>A', 'Var', (98, 107)) ('c.739C>A', 'Var', (46, 54)) ('c.739C>A', 'Mutation', 'rs750181129', (46, 54)) ('c.2353C>A', 'Mutation', 'rs61518065', (98, 107)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (81, 92)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (109, 120)) 100190 33300499 in 2012 when somatic gain-of-function variants were identified in patients with PPGL, somatostatinoma and polycythemia. ('PPGL', 'Chemical', '-', (80, 84)) ('PPGL', 'Gene', (80, 84)) ('variants', 'Var', (38, 46)) ('polycythemia', 'Phenotype', 'HP:0001901', (106, 118)) ('gain-of-function', 'PosReg', (21, 37)) ('somatostatinoma and polycythemia', 'Disease', 'MESH:D013005', (86, 118)) ('patients', 'Species', '9606', (66, 74)) 100191 33300499 Now termed the Pacak-Zhuang syndrome, these EPAS1 variants cluster around proline 531, one of two HIF-2alpha hydroxylation residues. ('cluster', 'Reg', (59, 66)) ('EPAS1', 'Gene', '2034', (44, 49)) ('Pacak-Zhuang syndrome', 'Disease', (15, 36)) ('proline', 'Chemical', 'MESH:D011392', (74, 81)) ('EPAS1', 'Gene', (44, 49)) ('variants', 'Var', (50, 58)) 100192 33300499 Functional studies have shown that these EPAS1 mutants are not fully hydroxylated by PHD2 and are stable in normoxia. ('EPAS1', 'Gene', '2034', (41, 46)) ('PHD2', 'Gene', '54583', (85, 89)) ('EPAS1', 'Gene', (41, 46)) ('PHD2', 'Gene', (85, 89)) ('mutants', 'Var', (47, 54)) 100193 33300499 These EPAS1 variants are exclusively somatic or mosaic. ('variants', 'Var', (12, 20)) ('EPAS1', 'Gene', '2034', (6, 11)) ('EPAS1', 'Gene', (6, 11)) 100194 33300499 There have been few case reports of PPGL- associated with the germline EPAS1 variant c.1121T>A, p.(Phe374Tyr) but the pathogenicity of that variant remains controversial. ('PPGL', 'Chemical', '-', (36, 40)) ('EPAS1', 'Gene', (71, 76)) ('PPGL-', 'Disease', (36, 41)) ('c.1121T>A', 'Mutation', 'rs150797491', (85, 94)) ('c.1121T>A', 'Var', (85, 94)) ('p.(Phe374Tyr)', 'Mutation', 'rs150797491', (96, 109)) ('EPAS1', 'Gene', '2034', (71, 76)) 100195 33300499 We report the occurrence of several germline EPAS1 variants in patients with PPGLs, and performed detailed functional studies to validate the clinical significance of this observation. ('variants', 'Var', (51, 59)) ('occurrence', 'Reg', (14, 24)) ('PPGL', 'Chemical', '-', (77, 81)) ('EPAS1', 'Gene', '2034', (45, 50)) ('patients', 'Species', '9606', (63, 71)) ('EPAS1', 'Gene', (45, 50)) ('PPGLs', 'Disease', (77, 82)) 100196 33300499 We report three germline EPAS1 variants (c.739C>A (p.Arg247Ser), c.1121T>A (p.Phe374Tyr) and c.2353C>A (p.Pro785Thr)) all have functional features in common with the well-known activating mutation p.Pro531Thr. ('c.739C>A', 'Var', (41, 49)) ('p.Pro531Thr', 'Var', (197, 208)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (51, 62)) ('c.739C>A', 'Mutation', 'rs750181129', (41, 49)) ('c.2353C>A', 'Mutation', 'rs61518065', (93, 102)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (104, 115)) ('EPAS1', 'Gene', '2034', (25, 30)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (76, 87)) ('c.1121T>A', 'Var', (65, 74)) ('EPAS1', 'Gene', (25, 30)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (197, 208)) ('c.1121T>A', 'Mutation', 'rs150797491', (65, 74)) ('c.2353C>A', 'Var', (93, 102)) 100199 33300499 2016) using a custom gene panel (TruSeq Custom Amplicon Assay, Illumina) encompassing the protein-coding and flanking intronic regions of EPAS1 (NM_001430.5, NP_001421.2). ('NP_001421.2', 'Var', (159, 170)) ('EPAS1', 'Gene', (139, 144)) ('EPAS1', 'Gene', '2034', (139, 144)) ('NM_001430.5', 'Var', (146, 157)) 100200 33300499 All EPAS1 variants were confirmed on Sanger sequencing. ('EPAS1', 'Gene', (4, 9)) ('EPAS1', 'Gene', '2034', (4, 9)) ('variants', 'Var', (10, 18)) 100201 33300499 Plasmid pCMV6-EPAS1-GFP (RG208604, Origene) was used as the template for site-directed mutagenesis (QuikChange Lightning Site-Directed Mutagenesis Kit, Agilent) to produce EPAS1 variants c.581A>G (p.His194Arg), c.739C>A (p.Arg247Ser), c.1121T>A (p.Phe374Tyr), c.2296A>C (p.Thr766Pro), c.2353C>A (p.Pro785Thr) and c.2365A>G (p.Ile789Val). ('c.581A>G', 'Var', (187, 195)) ('p.His194Arg', 'Mutation', 'rs570553380', (197, 208)) ('c.2296A>C', 'Mutation', 'rs59901247', (260, 269)) ('EPAS1', 'Gene', (172, 177)) ('c.2365A>G', 'Var', (313, 322)) ('EPAS1', 'Gene', '2034', (14, 19)) ('c.2365A>G', 'Mutation', 'rs749988999', (313, 322)) ('c.739C>A', 'Mutation', 'rs750181129', (211, 219)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (221, 232)) ('c.1121T>A', 'Var', (235, 244)) ('c.739C>A', 'Var', (211, 219)) ('EPAS1', 'Gene', '2034', (172, 177)) ('p.Thr766Pro', 'Mutation', 'rs59901247', (271, 282)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (246, 257)) ('c.2296A>C', 'Var', (260, 269)) ('c.2353C>A', 'Var', (285, 294)) ('c.581A>G', 'Mutation', 'rs570553380', (187, 195)) ('c.1121T>A', 'Mutation', 'rs150797491', (235, 244)) ('p.Ile789Val', 'Mutation', 'rs749988999', (324, 335)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (296, 307)) ('EPAS1', 'Gene', (14, 19)) ('c.2353C>A', 'Mutation', 'rs61518065', (285, 294)) 100202 33300499 Additionally, EPAS1 c.1591C>A (p.Pro531Thr) known to affect a critical hydroxylation site of HIF-2alpha and previously associated with PGL was generated as a positive control. ('EPAS1', 'Gene', '2034', (14, 19)) ('affect', 'Reg', (53, 59)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (31, 42)) ('EPAS1', 'Gene', (14, 19)) ('critical hydroxylation site', 'MPA', (62, 89)) ('p.Pro531Thr', 'Var', (31, 42)) ('c.1591C>A', 'Mutation', 'rs868648912', (20, 29)) ('c.1591C>A', 'Var', (20, 29)) 100212 33300499 To determine whether mutant HIF-2alpha disrupts the normal interaction of HIF-2alpha with pVHL or HIF-1beta, GFP-tagged WT or mutant HIF-2alpha were blotted after endogenous pVHL or HIF-1beta mediated pulldown. ('disrupts', 'NegReg', (39, 47)) ('pVHL', 'Gene', (174, 178)) ('mutant', 'Var', (21, 27)) ('pVHL', 'Gene', '7428', (90, 94)) ('interaction', 'Interaction', (59, 70)) ('HIF-1beta', 'Gene', (182, 191)) ('HIF-1beta', 'Gene', '3091', (98, 107)) ('pVHL', 'Gene', (90, 94)) ('pVHL', 'Gene', '7428', (174, 178)) ('HIF-1beta', 'Gene', '3091', (182, 191)) ('HIF-1beta', 'Gene', (98, 107)) ('mutant', 'Var', (126, 132)) ('HIF-2alpha', 'Gene', (28, 38)) 100218 33300499 To assess the half-life of GFP-tagged WT or mutant HIF-2alpha proteins in plasmid transfected HEK293 cells, 100 microg/mL of cycloheximide (CHX; #C0934, Sigma) was added to inhibit protein synthesis at 60, 30 and 10 min prior to protein extraction. ('proteins', 'Protein', (62, 70)) ('cycloheximide', 'Chemical', 'MESH:D003513', (125, 138)) ('protein synthesis', 'MPA', (181, 198)) ('HEK293', 'CellLine', 'CVCL:0045', (94, 100)) ('mutant', 'Var', (44, 50)) ('inhibit', 'NegReg', (173, 180)) ('HIF-2alpha', 'Gene', (51, 61)) 100219 33300499 To assess the interaction between pVHL and EPAS1 residue p.Arg247, the structure of human HIF-2alpha was extracted from the crystal structure of HIF-2alpha heterodimerized with ARNT-C-terminal PAS domain (PDB code: 3F1P, chain A). ('pVHL', 'Gene', '7428', (34, 38)) ('EPAS1', 'Gene', (43, 48)) ('Arg247', 'Chemical', '-', (59, 65)) ('pVHL', 'Gene', (34, 38)) ('PAS', 'Chemical', 'MESH:D011478', (193, 196)) ('p.Arg247', 'Var', (57, 65)) ('PAS', 'Chemical', 'MESH:D011478', (44, 47)) ('human', 'Species', '9606', (84, 89)) ('EPAS1', 'Gene', '2034', (43, 48)) 100220 33300499 The engineered Glu247 found in HIF-2alpha crystal structure was changed back to Arg247. ('Arg247', 'Chemical', '-', (80, 86)) ('Arg247', 'Var', (80, 86)) ('Glu247', 'Var', (15, 21)) ('Glu247', 'Chemical', '-', (15, 21)) 100230 33300499 Impact of germline EPAS1 variants on transcriptional activity of mutant HIF-2alpha relative to WT was assessed. ('EPAS1', 'Gene', (19, 24)) ('HIF-2alpha', 'Gene', (72, 82)) ('mutant', 'Var', (65, 71)) ('transcriptional', 'MPA', (37, 52)) ('EPAS1', 'Gene', '2034', (19, 24)) 100234 33300499 Taqman gene expression assays (Thermo-Fisher) were used perform qRT-PCR using probes specific to CCND1 (#Hs00765553_m1), SLC2A1 (Hs00892681_m1) and ACTB (#Hs99999903_m1, beta actin, endogenous control). ('CCND1', 'Gene', (97, 102)) ('ACTB', 'Gene', '60', (148, 152)) ('SLC2A1', 'Gene', (121, 127)) ('Hs00892681_m1', 'Var', (129, 142)) ('CCND1', 'Gene', '595', (97, 102)) ('beta actin', 'Gene', '728378', (170, 180)) ('#Hs99999903_m1', 'Var', (154, 168)) ('#Hs00765553_m1', 'Var', (104, 118)) ('ACTB', 'Gene', (148, 152)) ('SLC2A1', 'Gene', '6513', (121, 127)) ('beta actin', 'Gene', (170, 180)) 100235 33300499 Minor allele frequencies of EPAS1 variants in our cases and gnomAD (non-cancer) European non-Finnish controls were compared using the Fisher exact test. ('variants', 'Var', (34, 42)) ('EPAS1', 'Gene', '2034', (28, 33)) ('cancer', 'Phenotype', 'HP:0002664', (72, 78)) ('EPAS1', 'Gene', (28, 33)) ('non-cancer', 'Disease', (68, 78)) ('non-cancer', 'Disease', 'MESH:D009369', (68, 78)) 100237 33300499 HIF-2alpha variant interaction with pVHL by co-immunoprecipitation was also measured by densitometry of Western blots, corrected for pVHL and expressed relative to the value of WT HIF-2alpha under normoxia as mean +- s.d. ('pVHL', 'Gene', '7428', (36, 40)) ('pVHL', 'Gene', (36, 40)) ('HIF-2alpha', 'Gene', (0, 10)) ('pVHL', 'Gene', '7428', (133, 137)) ('interaction', 'Interaction', (19, 30)) ('variant', 'Var', (11, 18)) ('pVHL', 'Gene', (133, 137)) 100238 33300499 During the validation of a multigene panel for next generation sequencing (NGS), we found six Australian PPGL patients who had EPAS1 germline variants (c.581A>G (p.His194Arg), c.739C>A (p.Arg247Ser), c.1121T>A (p.Ph374Tyr), or c.2296A>C (p.Thr766Pro)) occurring together with previously identified PPGL-associated germline mutations in other driver genes (Table 1). ('c.2296A>C', 'Var', (227, 236)) ('c.1121T>A', 'Mutation', 'rs150797491', (200, 209)) ('c.581A>G', 'Mutation', 'rs570553380', (152, 160)) ('c.581A>G', 'Var', (152, 160)) ('EPAS1', 'Gene', '2034', (127, 132)) ('PPGL', 'Chemical', '-', (105, 109)) ('PPGL', 'Gene', (105, 109)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (186, 197)) ('EPAS1', 'Gene', (127, 132)) ('c.2296A>C', 'Mutation', 'rs59901247', (227, 236)) ('c.739C>A', 'Mutation', 'rs750181129', (176, 184)) ('PPGL', 'Chemical', '-', (298, 302)) ('Ph374Tyr', 'Chemical', '-', (213, 221)) ('p.His194Arg', 'Mutation', 'rs570553380', (162, 173)) ('patients', 'Species', '9606', (110, 118)) ('c.1121T>A', 'Var', (200, 209)) ('p.Thr766Pro', 'Mutation', 'rs59901247', (238, 249)) 100239 33300499 Notably, five of six of these patients had germline SDHB mutations. ('SDHB', 'Gene', (52, 56)) ('mutations', 'Var', (57, 66)) ('patients', 'Species', '9606', (30, 38)) ('SDHB', 'Gene', '6390', (52, 56)) 100240 33300499 Case #1 (EPAS1 variant c.581A>G, p.His194Arg) together with VHL mutation c.350G>C, p.Trp117Ser) was a man who had resection of a right phaeochromocytoma aged 30 years, and who also had bilateral renal masses, a pancreatic neuroendocrine tumor and recurrent hemangioblastomas consistent with diagnosis of VHL syndrome; his most recent hematocrit values have ranged between 0.45 and 0.52 (normal range 0.39-0.54). ('hemangioblastomas', 'Disease', 'MESH:D018325', (257, 274)) ('pancreatic neuroendocrine tumor', 'Phenotype', 'HP:0030405', (211, 242)) ('tumor', 'Phenotype', 'HP:0002664', (237, 242)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (222, 242)) ('c.350G>C', 'Mutation', 'c.350G>C', (73, 81)) ('VHL', 'Gene', (60, 63)) ('bilateral renal masses', 'Disease', (185, 207)) ('VHL syndrome', 'Disease', (304, 316)) ('renal masses', 'Phenotype', 'HP:0009726', (195, 207)) ('p.Trp117Ser', 'Mutation', 'p.W117S', (83, 94)) ('EPAS1', 'Gene', (9, 14)) ('hemangioblastomas', 'Disease', (257, 274)) ('VHL', 'Gene', (304, 307)) ('c.581A>G', 'Mutation', 'rs570553380', (23, 31)) ('VHL', 'Gene', '7428', (60, 63)) ('pancreatic neuroendocrine tumor', 'Disease', 'MESH:D018358', (211, 242)) ('variant c.581A>G', 'Var', (15, 31)) ('c.350G>C', 'Var', (73, 81)) ('VHL syndrome', 'Disease', 'MESH:D006623', (304, 316)) ('p.His194Arg', 'Mutation', 'rs570553380', (33, 44)) ('bilateral renal masses', 'Disease', 'MESH:D007674', (185, 207)) ('VHL', 'Gene', '7428', (304, 307)) ('pancreatic neuroendocrine tumor', 'Disease', (211, 242)) ('EPAS1', 'Gene', '2034', (9, 14)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (257, 273)) 100241 33300499 Case #3 (EPAS1 variant c.1121T>A, p.Phe374Tyr together with SDHB mutation c.286G>A, p.Gly96Ser) was a woman who had resection of a carotid body paraganglioma at age 52 years, without recurrence 15 years later; her most recent hematocrit values have ranged between 0.47 and 0.49 (normal range 0.35-0.47). ('mutation c.286G>A', 'Var', (65, 82)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (34, 45)) ('variant c.1121T>A', 'Var', (15, 32)) ('c.1121T>A', 'Var', (23, 32)) ('c.286G>A', 'Var', (74, 82)) ('SDHB', 'Gene', '6390', (60, 64)) ('c.1121T>A', 'Mutation', 'rs150797491', (23, 32)) ('paraganglioma', 'Phenotype', 'HP:0002668', (144, 157)) ('SDHB', 'Gene', (60, 64)) ('carotid body paraganglioma', 'Phenotype', 'HP:0100635', (131, 157)) ('woman', 'Species', '9606', (102, 107)) ('carotid body paraganglioma', 'Disease', 'MESH:D002345', (131, 157)) ('carotid body paraganglioma', 'Disease', (131, 157)) ('p.Gly96Ser', 'Var', (84, 94)) ('c.286G>A', 'Mutation', 'rs587782243', (74, 82)) ('EPAS1', 'Gene', '2034', (9, 14)) ('p.Gly96Ser', 'SUBSTITUTION', 'None', (84, 94)) ('EPAS1', 'Gene', (9, 14)) 100243 33300499 On the basis of our preliminary findings that germline EPAS1 variants may occur together with other germline PPGL predisposition alleles, we extended our EPAS1 sequence analysis to a larger cohort of 300 individuals with PPGL (Australian (n = 133, includes Table 1 subjects), German (n = 45), Italian (n = 52) and Polish (n = 70) subsets; Table 2 and Supplementary Tables 1, 2, see section on supplementary materials given at the end of this article). ('PPGL', 'Chemical', '-', (221, 225)) ('PPGL', 'Gene', (221, 225)) ('EPAS1', 'Gene', '2034', (154, 159)) ('PPGL', 'Chemical', '-', (109, 113)) ('EPAS1', 'Gene', (154, 159)) ('EPAS1', 'Gene', '2034', (55, 60)) ('EPAS1', 'Gene', (55, 60)) ('variants', 'Var', (61, 69)) 100244 33300499 As shown in Table 2, an additional 15 subjects (of whom five also had germline SDHx mutations) were found with germline EPAS1 alleles: one with EPAS1 c.830C>T (p.Ala277Val), two with c.1121T>A (p.Ph374Tyr), one with c.1963G>A (p.Gly655Arg), ten with c.2296A>C (p.Thr766Pro) two of whom (#19, 20) also carried c.2353C>A (p.Pro785Thr), and one with c.2365A>G (p.Ile789Val). ('EPAS1', 'Gene', '2034', (120, 125)) ('EPAS1', 'Gene', '2034', (144, 149)) ('c.2365A>G', 'Var', (347, 356)) ('c.1963G>A', 'Var', (216, 225)) ('c.2365A>G', 'Mutation', 'rs749988999', (347, 356)) ('c.2296A>C', 'Mutation', 'rs59901247', (250, 259)) ('SDH', 'Gene', '6390', (79, 82)) ('p.Ala277Val', 'Mutation', 'rs764569499', (160, 171)) ('c.1121T>A', 'Var', (183, 192)) ('c.2353C>A', 'Var', (309, 318)) ('c.1121T>A', 'Mutation', 'rs150797491', (183, 192)) ('c.2353C>A', 'Mutation', 'rs61518065', (309, 318)) ('EPAS1', 'Gene', (120, 125)) ('c.830C>T', 'Var', (150, 158)) ('p.Ile789Val', 'Mutation', 'rs749988999', (358, 369)) ('EPAS1', 'Gene', (144, 149)) ('c.830C>T', 'Mutation', 'rs764569499', (150, 158)) ('mutations', 'Var', (84, 93)) ('SDH', 'Gene', (79, 82)) ('Ph374Tyr', 'Chemical', '-', (196, 204)) ('p.Gly655Arg', 'Mutation', 'rs201673782', (227, 238)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (320, 331)) ('p.Thr766Pro', 'Mutation', 'rs59901247', (261, 272)) ('c.2296A>C', 'Var', (250, 259)) ('c.1963G>A', 'Mutation', 'rs201673782', (216, 225)) 100245 33300499 Combining both cohorts, germline EPAS1 variants were found no more often in subjects with an SDHB mutation (six of 75 subjects), compared with subjects without an SDHB mutation (15 of 225, P = 0.7); nor was prevalence of germline EPAS1 variants different in those with germline mutations in VHL/SDHx genes (11 of 176 subjects) compared with others (10 of 124 subjects). ('EPAS1', 'Gene', '2034', (230, 235)) ('SDH', 'Gene', '6390', (295, 298)) ('SDHB', 'Gene', '6390', (93, 97)) ('mutation', 'Var', (98, 106)) ('VHL', 'Gene', (291, 294)) ('EPAS1', 'Gene', (33, 38)) ('SDHB', 'Gene', '6390', (163, 167)) ('SDHB', 'Gene', (93, 97)) ('SDH', 'Gene', '6390', (93, 96)) ('SDH', 'Gene', '6390', (163, 166)) ('SDH', 'Gene', (295, 298)) ('EPAS1', 'Gene', (230, 235)) ('VHL', 'Gene', '7428', (291, 294)) ('variants', 'Var', (39, 47)) ('variants', 'Var', (236, 244)) ('SDHB', 'Gene', (163, 167)) ('SDH', 'Gene', (163, 166)) ('SDH', 'Gene', (93, 96)) ('EPAS1', 'Gene', '2034', (33, 38)) 100246 33300499 Using in silico tools (Table 3), EPAS1 variant c.739C>A (p.Arg247Ser) was consistently predicted to be pathogenic, whereas c.581A>G (p.His194Arg), c.830C>T (p.Ala277Val) and c.1121T>A (p.Phe374Tyr) substitutions were predicted to be pathogenic by some but not all tools. ('pathogenic', 'Reg', (103, 113)) ('EPAS1', 'Gene', (33, 38)) ('c.739C>A', 'Mutation', 'rs750181129', (47, 55)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (57, 68)) ('c.830C>T', 'Var', (147, 155)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (185, 196)) ('variant c.739C>A', 'Var', (39, 55)) ('c.830C>T', 'Mutation', 'rs764569499', (147, 155)) ('c.581A>G', 'Var', (123, 131)) ('p.His194Arg', 'Mutation', 'rs570553380', (133, 144)) ('c.581A>G', 'Mutation', 'rs570553380', (123, 131)) ('p.Ala277Val', 'Mutation', 'rs764569499', (157, 168)) ('c.1121T>A', 'Mutation', 'rs150797491', (174, 183)) ('c.1121T>A', 'Var', (174, 183)) ('EPAS1', 'Gene', '2034', (33, 38)) ('c.739C>A', 'Var', (47, 55)) 100247 33300499 EPAS1 variants c.1963G>A (p.Gly655Arg), c.2296A>C (p.Thr766Pro), c.2353C>A (p.Pro785Thr) and c.2365A>G (p.Ile789Val) were predicted to be benign by all prediction tools. ('c.2296A>C', 'Mutation', 'rs59901247', (40, 49)) ('EPAS1', 'Gene', '2034', (0, 5)) ('p.Ile789Val', 'Mutation', 'rs749988999', (104, 115)) ('c.2365A>G', 'Var', (93, 102)) ('EPAS1', 'Gene', (0, 5)) ('variants c.1963G>A', 'Var', (6, 24)) ('c.2353C>A', 'Mutation', 'rs61518065', (65, 74)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (76, 87)) ('p.Thr766Pro', 'Mutation', 'rs59901247', (51, 62)) ('c.1963G>A', 'Mutation', 'rs201673782', (15, 24)) ('c.2365A>G', 'Mutation', 'rs749988999', (93, 102)) ('c.2296A>C', 'Var', (40, 49)) ('c.2353C>A', 'Var', (65, 74)) ('p.Gly655Arg', 'Mutation', 'rs201673782', (26, 37)) ('c.1963G>A', 'Var', (15, 24)) 100248 33300499 We then compared allelic frequencies of these variants in PPGL patients with those from the genome aggregation database samples from individuals who were not ascertained for having cancer in a cancer study (gnomAD v2.1.1 non-cancer; Table 3). ('cancer', 'Disease', 'MESH:D009369', (193, 199)) ('cancer', 'Phenotype', 'HP:0002664', (225, 231)) ('non-cancer', 'Disease', (221, 231)) ('cancer', 'Disease', 'MESH:D009369', (225, 231)) ('cancer', 'Phenotype', 'HP:0002664', (181, 187)) ('cancer', 'Disease', (193, 199)) ('non-cancer', 'Disease', 'MESH:D009369', (221, 231)) ('cancer', 'Disease', (225, 231)) ('variants', 'Var', (46, 54)) ('cancer', 'Disease', 'MESH:D009369', (181, 187)) ('cancer', 'Phenotype', 'HP:0002664', (193, 199)) ('patients', 'Species', '9606', (63, 71)) ('PPGL', 'Gene', (58, 62)) ('cancer', 'Disease', (181, 187)) ('PPGL', 'Chemical', '-', (58, 62)) 100249 33300499 We note EPAS1 variants c.2296A>C and c.2353C>A had allelic frequencies in gnomAD of >1%, consistent with being common polymorphisms. ('c.2296A>C', 'Mutation', 'rs59901247', (23, 32)) ('EPAS1', 'Gene', (8, 13)) ('c.2353C>A', 'Var', (37, 46)) ('variants c.2296A>C', 'Var', (14, 32)) ('gnomAD', 'Disease', (74, 80)) ('c.2296A>C', 'Var', (23, 32)) ('c.2353C>A', 'Mutation', 'rs61518065', (37, 46)) ('EPAS1', 'Gene', '2034', (8, 13)) 100250 33300499 Moreover, since there is significant ethnic variation of many of these EPAS1 variants in non-cancer gnomAD (Supplementary Table 3), we confined statistical comparison to our PPGL cases against European non-Finnish controls (i.e. ('variants', 'Var', (77, 85)) ('EPAS1', 'Gene', (71, 76)) ('cancer', 'Phenotype', 'HP:0002664', (93, 99)) ('PPGL', 'Chemical', '-', (174, 178)) ('non-cancer gnomAD', 'Disease', 'MESH:D009369', (89, 106)) ('non-cancer gnomAD', 'Disease', (89, 106)) ('EPAS1', 'Gene', '2034', (71, 76)) 100251 33300499 As shown in Table 3, c.581A>G (p.His194Arg), c.830C>T (p.Ala277Val), c.2353C>A (p.Pro785Thr) and c.2365A>G (p.Ile789Val) were more common in PPGL cases than controls. ('PPGL', 'Chemical', '-', (141, 145)) ('c.2353C>A', 'Mutation', 'rs61518065', (69, 78)) ('common', 'Reg', (131, 137)) ('p.Ile789Val', 'Mutation', 'rs749988999', (108, 119)) ('c.2365A>G', 'Var', (97, 106)) ('c.830C>T', 'Var', (45, 53)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (80, 91)) ('c.581A>G', 'Mutation', 'rs570553380', (21, 29)) ('p.Ala277Val', 'Mutation', 'rs764569499', (55, 66)) ('PPGL', 'Disease', (141, 145)) ('c.581A>G', 'Var', (21, 29)) ('c.2365A>G', 'Mutation', 'rs749988999', (97, 106)) ('c.2353C>A', 'Var', (69, 78)) ('p.His194Arg', 'Mutation', 'rs570553380', (31, 42)) ('c.830C>T', 'Mutation', 'rs764569499', (45, 53)) 100252 33300499 EPAS1 c.739C>A (p.Arg247Ser) was not seen in gnomAD, although two other rare variants are noted at this codon (c.739C>T (p.Arg247Cys) MAF 8 x 10-6; and c.740G>A (p.Arg247His) MAF 8.7 x 10-5). ('EPAS1', 'Gene', '2034', (0, 5)) ('c.739C>A', 'Mutation', 'rs750181129', (6, 14)) ('c.740G>A (p.Arg247His', 'Var', (152, 173)) ('MAF', 'Gene', '4094', (134, 137)) ('p.Arg247Cys', 'Mutation', 'rs143507094', (121, 132)) ('EPAS1', 'Gene', (0, 5)) ('MAF', 'Gene', (175, 178)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (16, 27)) ('MAF', 'Gene', (134, 137)) ('MAF', 'Gene', '4094', (175, 178)) ('c.740G>A', 'Mutation', 'rs148453283', (152, 160)) ('c.739C>T', 'Var', (111, 119)) ('p.Arg247His', 'Mutation', 'rs148453283', (162, 173)) ('c.739C>T', 'Mutation', 'rs766723369', (111, 119)) 100253 33300499 Although EPAS1 variant c.2296A>C (p.Thr766Pro) has uncertain annotation in gnomAD (i.e. ('variant c.2296A>C', 'Var', (15, 32)) ('c.2296A>C', 'Mutation', 'rs59901247', (23, 32)) ('p.Thr766Pro', 'Mutation', 'rs59901247', (34, 45)) ('gnomAD', 'Disease', (75, 81)) ('c.2296A>C', 'Var', (23, 32)) ('EPAS1', 'Gene', '2034', (9, 14)) ('EPAS1', 'Gene', (9, 14)) 100255 33300499 We next applied Bayesian principles that we previously used for SDHx variants, to estimate the lifetime penetrance of PPGL for EPAS1 variants c.1121T>A (p.Phe374Tyr) and c.2353C>A (p.Pro785Thr), taking into account allelic frequencies in our cases vs European non-Finnish gnomAD controls, and assuming estimated population PPGL prevalence of 1/3000. ('c.2353C>A', 'Var', (170, 179)) ('SDH', 'Gene', (64, 67)) ('variants c.1121T>A', 'Var', (133, 151)) ('EPAS1', 'Gene', '2034', (127, 132)) ('PPGL', 'Chemical', '-', (118, 122)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (181, 192)) ('EPAS1', 'Gene', (127, 132)) ('c.2353C>A', 'Mutation', 'rs61518065', (170, 179)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (153, 164)) ('SDH', 'Gene', '6390', (64, 67)) ('c.1121T>A', 'Var', (142, 151)) ('PPGL', 'Chemical', '-', (323, 327)) ('c.1121T>A', 'Mutation', 'rs150797491', (142, 151)) 100256 33300499 Using these calculations, c.2353C>A (p.Pro785Thr) has a modest estimated lifetime penetrance for PPGL of 0.22% (CI 0.03-1.13%) whereas c.1121T>A (p.Phe374Tyr) has an estimated lifetime penetrance of only 0.05% (CI 0.02-0.13%, i.e. ('p.Pro785Thr', 'Mutation', 'rs61518065', (37, 48)) ('c.1121T>A', 'Mutation', 'rs150797491', (135, 144)) ('c.1121T>A', 'Var', (135, 144)) ('c.2353C>A', 'Var', (26, 35)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (146, 157)) ('PPGL', 'Chemical', '-', (97, 101)) ('c.2353C>A', 'Mutation', 'rs61518065', (26, 35)) 100257 33300499 To examine the stability of the identified EPAS1 variants in normoxia, we generated GFP-tagged expression plasmids for each variant (excepting the predicted benign variants p.Ala277Val and p.Gly655Arg) and transfected them into HEK293, PC12 and HeLa cells. ('p.Ala277Val', 'Mutation', 'rs764569499', (173, 184)) ('PC12', 'CellLine', 'CVCL:0481', (236, 240)) ('p.Gly655Arg', 'Var', (189, 200)) ('HeLa', 'CellLine', 'CVCL:0030', (245, 249)) ('EPAS1', 'Gene', (43, 48)) ('p.Gly655Arg', 'Mutation', 'rs201673782', (189, 200)) ('p.Ala277Val', 'Var', (173, 184)) ('HEK293', 'CellLine', 'CVCL:0045', (228, 234)) ('EPAS1', 'Gene', '2034', (43, 48)) 100258 33300499 We included two positive controls in each experiment: (i) the somatic gain-of-function EPAS1 mutant p.Pro531Thr in normoxia and (ii) WT HIF-2alpha-GFP transfected in cells cultured under hypoxic (1%) conditions. ('p.Pro531Thr', 'SUBSTITUTION', 'None', (100, 111)) ('EPAS1', 'Gene', '2034', (87, 92)) ('EPAS1', 'Gene', (87, 92)) ('gain-of-function', 'PosReg', (70, 86)) ('p.Pro531Thr', 'Var', (100, 111)) 100260 33300499 1, HIF-2alpha mutants p.Arg247Ser, p.Phe374Tyr and p.Pro785Thr were stable in normoxia in all cellular backgrounds, HEK293 (A), PC12 (B) and HeLa cells (C). ('HEK293', 'CellLine', 'CVCL:0045', (116, 122)) ('HeLa', 'CellLine', 'CVCL:0030', (141, 145)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (22, 33)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (51, 62)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (35, 46)) ('p.Phe374Tyr', 'Var', (35, 46)) ('p.Arg247Ser', 'Var', (22, 33)) ('PC12', 'CellLine', 'CVCL:0481', (128, 132)) ('p.Pro785Thr', 'Var', (51, 62)) ('HIF-2alpha', 'Gene', (3, 13)) 100261 33300499 When measured by densitometry, levels of these three mutant proteins were not significantly different from p.Pro531Thr or hypoxic WT HIF-2alpha in HEK293 and HeLa cells, whereas p.Arg247Ser and p.Pro785Thr were mildly lower than controls in PC12 cells (Supplementary Fig. ('p.Pro531Thr', 'Var', (107, 118)) ('p.Arg247Ser', 'Var', (178, 189)) ('p.Pro785Thr', 'Var', (194, 205)) ('HEK293', 'CellLine', 'CVCL:0045', (147, 153)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (107, 118)) ('PC12', 'CellLine', 'CVCL:0481', (241, 245)) ('HeLa', 'CellLine', 'CVCL:0030', (158, 162)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (178, 189)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (194, 205)) ('lower', 'NegReg', (218, 223)) 100262 33300499 In contrast, HIF-2alpha mutants p.His194Arg, p.Thr766Pro and p.Ile789Val were not stable in normoxia in any cellular background (Fig. ('p.Ile789Val', 'Var', (61, 72)) ('p.His194Arg', 'Mutation', 'rs570553380', (32, 43)) ('p.Thr766Pro', 'Mutation', 'rs59901247', (45, 56)) ('HIF-2alpha', 'Gene', (13, 23)) ('p.Thr766Pro', 'Var', (45, 56)) ('p.Ile789Val', 'Mutation', 'rs749988999', (61, 72)) ('p.His194Arg', 'Var', (32, 43)) 100264 33300499 2, HIF-2alpha variants p.His194Arg, p.Thr766Pro and p.Ile789Val were all rapidly degraded in normoxia 60 min after cycloheximide treatment. ('degraded', 'NegReg', (81, 89)) ('p.Thr766Pro', 'Mutation', 'rs59901247', (36, 47)) ('p.Thr766Pro', 'Var', (36, 47)) ('p.Ile789Val', 'Mutation', 'rs749988999', (52, 63)) ('cycloheximide', 'Chemical', 'MESH:D003513', (115, 128)) ('p.His194Arg', 'Mutation', 'rs570553380', (23, 34)) ('p.Ile789Val', 'Var', (52, 63)) ('p.His194Arg', 'Var', (23, 34)) ('HIF-2alpha', 'Gene', (3, 13)) 100265 33300499 In contrast, HIF-2alpha variants p.Arg247Ser, p.Phe374Tyr and p.Pro785Thr were stable over the course of cycloheximide treatment, similar to the positive control p.Pro531Thr; the stability of WT HIF-2alpha under hypoxia is shown for reference. ('p.Pro785Thr', 'Mutation', 'rs61518065', (62, 73)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (33, 44)) ('cycloheximide', 'Chemical', 'MESH:D003513', (105, 118)) ('hypoxia', 'Disease', (212, 219)) ('hypoxia', 'Disease', 'MESH:D000860', (212, 219)) ('p.Pro785Thr', 'Var', (62, 73)) ('p.Arg247Ser', 'Var', (33, 44)) ('HIF-2alpha', 'Gene', (13, 23)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (162, 173)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (46, 57)) ('p.Phe374Tyr', 'Var', (46, 57)) ('p.Pro531Thr', 'Var', (162, 173)) 100267 33300499 We hypothesized that stability of p.Arg247Ser, p.Phe374Tyr and p.Pro785Thr HIF-2alpha mutants in normoxia may be due to disrupted interaction between pVHL and HIF-2alpha. ('p.Phe374Tyr', 'Mutation', 'rs150797491', (47, 58)) ('p.Phe374Tyr', 'Var', (47, 58)) ('pVHL', 'Gene', (150, 154)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (63, 74)) ('HIF-2alpha', 'Gene', (75, 85)) ('p.Pro785Thr', 'Var', (63, 74)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (34, 45)) ('interaction', 'Interaction', (130, 141)) ('p.Arg247Ser', 'Var', (34, 45)) ('pVHL', 'Gene', '7428', (150, 154)) 100268 33300499 This was assessed by co-immunoprecipitation of HIF-2alpha mutants from HEK293 cells using magnetic beads coupled to anti-pVHL antibodies. ('pVHL', 'Gene', '7428', (121, 125)) ('HEK293', 'CellLine', 'CVCL:0045', (71, 77)) ('pVHL', 'Gene', (121, 125)) ('HIF-2alpha', 'Gene', (47, 57)) ('mutants', 'Var', (58, 65)) 100269 33300499 As expected, gain-of-function positive control p.Pro531Thr HIF-2alpha mutant did not associate with pVHL in normoxia, due to absence of the prolyl hydroxylation site at residue 531 of HIF-2alpha (Fig. ('pVHL', 'Gene', (100, 104)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (47, 58)) ('prolyl hydroxylation', 'MPA', (140, 160)) ('p.Pro531Thr', 'Var', (47, 58)) ('absence', 'NegReg', (125, 132)) ('HIF-2alpha', 'Gene', (59, 69)) ('pVHL', 'Gene', '7428', (100, 104)) 100270 33300499 The novel variant p.Arg247Ser also showed diminished interaction with pVHL. ('p.Arg247Ser', 'Mutation', 'rs750181129', (18, 29)) ('pVHL', 'Gene', '7428', (70, 74)) ('p.Arg247Ser', 'Var', (18, 29)) ('pVHL', 'Gene', (70, 74)) ('diminished', 'NegReg', (42, 52)) ('interaction', 'Interaction', (53, 64)) 100271 33300499 Interestingly, p.Phe374Tyr and p.Pro785Thr HIF-2alpha mutants that were stable in normoxia retained their interaction with pVHL (Fig. ('pVHL', 'Gene', (123, 127)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (15, 26)) ('interaction', 'Interaction', (106, 117)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (31, 42)) ('HIF-2alpha', 'Gene', (43, 53)) ('p.Pro785Thr', 'Var', (31, 42)) ('p.Phe374Tyr', 'Var', (15, 26)) ('pVHL', 'Gene', '7428', (123, 127)) 100272 33300499 The other HIF-2alpha mutants p.His194Arg, p.Thr766Pro and p.Ile789Val also retained interaction with pVHL. ('HIF-2alpha', 'Gene', (10, 20)) ('p.Ile789Val', 'Mutation', 'rs749988999', (58, 69)) ('p.His194Arg', 'Mutation', 'rs570553380', (29, 40)) ('pVHL', 'Gene', '7428', (101, 105)) ('pVHL', 'Gene', (101, 105)) ('p.Ile789Val', 'Var', (58, 69)) ('p.His194Arg', 'Var', (29, 40)) ('p.Thr766Pro', 'Mutation', 'rs59901247', (42, 53)) ('p.Thr766Pro', 'Var', (42, 53)) ('interaction', 'Interaction', (84, 95)) 100273 33300499 We investigated the possible disrupted interaction between pVHL and HIF-2alpha for mutant p.Arg247Ser. ('pVHL', 'Gene', '7428', (59, 63)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (90, 101)) ('pVHL', 'Gene', (59, 63)) ('p.Arg247Ser', 'Var', (90, 101)) ('interaction', 'Interaction', (39, 50)) 100278 33300499 We found that Arg247 mediates two critical interactions between HIF-2alpha and pVHL: a salt bridge with Asp143 and a hydrogen bond with Gln145 on pVHL (Fig. ('interactions', 'Interaction', (43, 55)) ('pVHL', 'Gene', '7428', (79, 83)) ('Gln145', 'Var', (136, 142)) ('Arg247', 'Var', (14, 20)) ('pVHL', 'Gene', (79, 83)) ('Asp143', 'Var', (104, 110)) ('salt', 'Chemical', 'MESH:D012492', (87, 91)) ('hydrogen', 'Interaction', (117, 125)) ('Arg247', 'Chemical', '-', (14, 20)) ('Asp143', 'Chemical', '-', (104, 110)) ('pVHL', 'Gene', '7428', (146, 150)) ('pVHL', 'Gene', (146, 150)) ('Gln145', 'Chemical', '-', (136, 142)) ('hydrogen', 'Chemical', 'MESH:D006859', (117, 125)) ('mediates', 'Reg', (21, 29)) ('salt bridge', 'MPA', (87, 98)) 100280 33300499 Due to the lack of functional studies of HIF-2alpha and ARNT pairing in context of PPGL, it was unclear whether our EPAS1 variants affected this interaction. ('EPAS1', 'Gene', '2034', (116, 121)) ('variants', 'Var', (122, 130)) ('EPAS1', 'Gene', (116, 121)) ('interaction', 'Interaction', (145, 156)) ('PPGL', 'Chemical', '-', (83, 87)) ('affected', 'Reg', (131, 139)) 100281 33300499 To investigate this in normoxia, GFP-tagged WT or mutant HIF-2alpha proteins were overexpressed by tripling transfection input to 6 mug/1 x 105 HEK293 cells to ensure adequate amounts of proteins. ('HEK293', 'CellLine', 'CVCL:0045', (144, 150)) ('proteins', 'Protein', (68, 76)) ('HIF-2alpha', 'Gene', (57, 67)) ('mutant', 'Var', (50, 56)) 100282 33300499 This indicated that HIF-2alpha-ARNT interaction was not altered by these EPAS1 variants. ('variants', 'Var', (79, 87)) ('EPAS1', 'Gene', (73, 78)) ('EPAS1', 'Gene', '2034', (73, 78)) 100283 33300499 HEK293 cells were transfected with WT or mutant EPAS1 vectors together with pLightSwitch VEGFA, containing the VEGFA promoter upstream of the renilla reporter. ('mutant', 'Var', (41, 47)) ('VEGFA', 'Gene', (111, 116)) ('EPAS1', 'Gene', '2034', (48, 53)) ('VEGFA', 'Gene', '7422', (89, 94)) ('EPAS1', 'Gene', (48, 53)) ('HEK293', 'CellLine', 'CVCL:0045', (0, 6)) ('VEGFA', 'Gene', '7422', (111, 116)) ('VEGFA', 'Gene', (89, 94)) 100284 33300499 Significantly higher reporter activity was observed in lysates from cells transfected with EPAS1/HIF-2alpha p.Phe374Tyr, p.Pro785Thr and positive control p.Pro531Thr mutant (Fig. ('EPAS1', 'Gene', '2034', (91, 96)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (154, 165)) ('higher', 'PosReg', (14, 20)) ('EPAS1', 'Gene', (91, 96)) ('p.Pro531Thr', 'Var', (154, 165)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (121, 132)) ('p.Phe374Tyr', 'Var', (108, 119)) ('p.Pro785Thr', 'Var', (121, 132)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (108, 119)) ('reporter activity', 'MPA', (21, 38)) 100285 33300499 These results somewhat reflected the effect of HIF-2alpha mutants on protein stability in normoxia, with the exception of p.Arg247Ser which was not associated with increased reporter transactivation despite apparent protein stability. ('HIF-2alpha', 'Gene', (47, 57)) ('protein stability', 'MPA', (69, 86)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (122, 133)) ('p.Arg247Ser', 'Var', (122, 133)) 100287 33300499 This involved extracting total RNA from HEK293 cells transiently transfected with GFP-tagged WT or mutant HIF-2alpha over 48 h and performing RT for cDNA conversion, followed by quantitative real-time PCR. ('mutant', 'Var', (99, 105)) ('HIF-2alpha', 'Gene', (106, 116)) ('HEK293', 'CellLine', 'CVCL:0045', (40, 46)) 100289 33300499 From our selection of germline EPAS1/HIF-2alpha variants, only p.Thr766Pro alongside p.Pro531Thr positive control HIF-2alpha mutant was able to induce significant CCND1 expression relative to WT (n = 3, P < 0.05) (Fig. ('induce', 'PosReg', (144, 150)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (85, 96)) ('CCND1', 'Gene', (163, 168)) ('p.Thr766Pro', 'Var', (63, 74)) ('p.Pro531Thr', 'Var', (85, 96)) ('CCND1', 'Gene', '595', (163, 168)) ('EPAS1', 'Gene', '2034', (31, 36)) ('p.Thr766Pro', 'Mutation', 'rs59901247', (63, 74)) ('expression', 'MPA', (169, 179)) ('EPAS1', 'Gene', (31, 36)) 100290 33300499 Significant induction of SLC2A1 was observed only in our somatic gain-of-function mutation p.Pro531Thr relative to cells transfected with WT EPAS1 in normoxia (n = 3, P < 0.05) (Fig. ('SLC2A1', 'Gene', (25, 31)) ('p.Pro531Thr', 'Var', (91, 102)) ('EPAS1', 'Gene', '2034', (141, 146)) ('gain-of-function', 'PosReg', (65, 81)) ('EPAS1', 'Gene', (141, 146)) ('SLC2A1', 'Gene', '6513', (25, 31)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (91, 102)) 100291 33300499 The role of EPAS1/HIF-2alpha in PPGL is still emerging, and the pathogenic potential of germline EPAS1 variants is not well understood. ('PPGL', 'Chemical', '-', (32, 36)) ('EPAS1', 'Gene', (12, 17)) ('variants', 'Var', (103, 111)) ('EPAS1', 'Gene', '2034', (97, 102)) ('EPAS1', 'Gene', '2034', (12, 17)) ('EPAS1', 'Gene', (97, 102)) ('PPGL', 'Disease', (32, 36)) 100292 33300499 In this study we have systematically assessed the functional effect of germline EPAS1 variants c.581A>G (p.His194Arg), c.739C>A (p.Arg247Ser), c.1121T>A (p.Phe374Tyr), c.2296A>C (p.Thr766Pro), c.2353C>A (p.Pro785Thr) and c.2365A>G (p.Ile789Val) identified in patients with PPGL. ('PPGL', 'Chemical', '-', (273, 277)) ('EPAS1', 'Gene', '2034', (80, 85)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (129, 140)) ('c.739C>A', 'Var', (119, 127)) ('c.2296A>C', 'Var', (168, 177)) ('c.2353C>A', 'Var', (193, 202)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (154, 165)) ('patients', 'Species', '9606', (259, 267)) ('c.581A>G', 'Mutation', 'rs570553380', (95, 103)) ('p.Thr766Pro', 'Mutation', 'rs59901247', (179, 190)) ('p.Ile789Val', 'Mutation', 'rs749988999', (232, 243)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (204, 215)) ('c.1121T>A', 'Var', (143, 152)) ('c.2353C>A', 'Mutation', 'rs61518065', (193, 202)) ('p.His194Arg', 'Mutation', 'rs570553380', (105, 116)) ('c.581A>G', 'Var', (95, 103)) ('c.2296A>C', 'Mutation', 'rs59901247', (168, 177)) ('c.1121T>A', 'Mutation', 'rs150797491', (143, 152)) ('EPAS1', 'Gene', (80, 85)) ('PPGL', 'Disease', (273, 277)) ('variants c.581A>G', 'Var', (86, 103)) ('c.2365A>G', 'Var', (221, 230)) ('c.2365A>G', 'Mutation', 'rs749988999', (221, 230)) ('c.739C>A', 'Mutation', 'rs750181129', (119, 127)) 100293 33300499 Collectively, our data show that p.Arg247Ser, p.Phe374Tyr and p.Pro785Thr each share some features in common with the known oncogenic EPAS1 mutation p.Pro531Thr. ('p.Pro531Thr', 'Var', (149, 160)) ('EPAS1', 'Gene', '2034', (134, 139)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (62, 73)) ('EPAS1', 'Gene', (134, 139)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (33, 44)) ('p.Pro785Thr', 'Var', (62, 73)) ('p.Arg247Ser', 'Var', (33, 44)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (149, 160)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (46, 57)) ('p.Phe374Tyr', 'Var', (46, 57)) 100294 33300499 We initially identified four germline EPAS1 variants during validation of NGS testing in a cohort of (de-identified) PPGL cases. ('PPGL', 'Chemical', '-', (117, 121)) ('variants', 'Var', (44, 52)) ('EPAS1', 'Gene', (38, 43)) ('EPAS1', 'Gene', '2034', (38, 43)) 100295 33300499 Five of six PPGL patients with these EPAS1 variants also had germline SDHB mutations, although this association may have been biased by the fact that our validation cohort deliberately included a predominance of cases with known PPGL-associated mutations. ('SDHB', 'Gene', '6390', (70, 74)) ('SDHB', 'Gene', (70, 74)) ('PPGL', 'Chemical', '-', (12, 16)) ('PPGL', 'Chemical', '-', (229, 233)) ('PPGL', 'Gene', (12, 16)) ('patients', 'Species', '9606', (17, 25)) ('mutations', 'Var', (75, 84)) ('EPAS1', 'Gene', '2034', (37, 42)) ('variants', 'Var', (43, 51)) ('EPAS1', 'Gene', (37, 42)) 100296 33300499 When we extended EPAS1 testing to a larger cohort (n = 300) including cases from Australia, Germany, Italy and Poland, we found 15 additional cases with germline EPAS1 variants, five of whom had germline mutations in SDH genes. ('SDH', 'Gene', '6390', (217, 220)) ('EPAS1', 'Gene', '2034', (17, 22)) ('variants', 'Var', (168, 176)) ('SDH', 'Gene', (217, 220)) ('EPAS1', 'Gene', (17, 22)) ('EPAS1', 'Gene', '2034', (162, 167)) ('EPAS1', 'Gene', (162, 167)) 100297 33300499 In the combined cohort, we did not find an association between SDHx mutations and EPAS1 variants. ('SDH', 'Gene', '6390', (63, 66)) ('EPAS1', 'Gene', (82, 87)) ('SDH', 'Gene', (63, 66)) ('mutations', 'Var', (68, 77)) ('variants', 'Var', (88, 96)) ('EPAS1', 'Gene', '2034', (82, 87)) 100298 33300499 Of variants present in gnomAD, only c.581A>G (p.His194Arg), c.2353C>A (p.Pro785Thr) and c.2365A>G (p.Ile789Val) were more common in PPGL patients than European non-Finnish controls. ('PPGL', 'Chemical', '-', (132, 136)) ('p.His194Arg', 'Mutation', 'rs570553380', (46, 57)) ('c.581A>G', 'Mutation', 'rs570553380', (36, 44)) ('c.581A>G', 'Var', (36, 44)) ('c.2353C>A', 'Var', (60, 69)) ('patients', 'Species', '9606', (137, 145)) ('common', 'Reg', (122, 128)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (71, 82)) ('p.Ile789Val', 'Mutation', 'rs749988999', (99, 110)) ('c.2365A>G', 'Var', (88, 97)) ('PPGL', 'Disease', (132, 136)) ('c.2365A>G', 'Mutation', 'rs749988999', (88, 97)) ('c.2353C>A', 'Mutation', 'rs61518065', (60, 69)) 100299 33300499 EPAS1 variant c.739C>A (p.Arg247Ser) is novel and not present in gnomAD. ('EPAS1', 'Gene', '2034', (0, 5)) ('c.739C>A', 'Var', (14, 22)) ('EPAS1', 'Gene', (0, 5)) ('c.739C>A', 'Mutation', 'rs750181129', (14, 22)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (24, 35)) 100300 33300499 We found that EPAS1 variants p.Arg247Ser, p.Phe374Tyr and p.Pro785Thr were stable in normoxia in diverse cellular backgrounds (HEK293, PC12 and HeLa cells). ('EPAS1', 'Gene', '2034', (14, 19)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (58, 69)) ('p.Pro785Thr', 'Var', (58, 69)) ('EPAS1', 'Gene', (14, 19)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (29, 40)) ('p.Phe374Tyr', 'Var', (42, 53)) ('HEK293', 'CellLine', 'CVCL:0045', (127, 133)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (42, 53)) ('p.Arg247Ser', 'Var', (29, 40)) ('HeLa', 'CellLine', 'CVCL:0030', (144, 148)) ('PC12', 'CellLine', 'CVCL:0481', (135, 139)) 100302 33300499 As expected, the known gain-of-function variant p.Pro531Thr did not interact with pVHL in normoxia; of the other variants, only our novel variant p.Arg247Ser also failed to interact with pVHL. ('p.Arg247Ser', 'Mutation', 'rs750181129', (146, 157)) ('p.Arg247Ser', 'Var', (146, 157)) ('pVHL', 'Gene', '7428', (187, 191)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (48, 59)) ('pVHL', 'Gene', (187, 191)) ('pVHL', 'Gene', '7428', (82, 86)) ('pVHL', 'Gene', (82, 86)) ('p.Pro531Thr', 'Var', (48, 59)) 100303 33300499 Our structural models confirmed that EPAS1/HIF-2alpha p.Arg247 directly interacts with pVHL p.Asp143 (salt bridge) and p.Gln145 (hydrogen bond). ('p.Gln145', 'Var', (119, 127)) ('pVHL', 'Gene', '7428', (87, 91)) ('pVHL', 'Gene', (87, 91)) ('Arg247', 'Chemical', '-', (56, 62)) ('hydrogen', 'Chemical', 'MESH:D006859', (129, 137)) ('Asp143', 'Chemical', '-', (94, 100)) ('interacts', 'Interaction', (72, 81)) ('p.Arg247', 'Var', (54, 62)) ('EPAS1', 'Gene', '2034', (37, 42)) ('p.Asp143', 'Var', (92, 100)) ('Gln145', 'Chemical', '-', (121, 127)) ('salt', 'Chemical', 'MESH:D012492', (102, 106)) ('EPAS1', 'Gene', (37, 42)) 100304 33300499 Interestingly, it has been previously shown that the tumorigenic mutant p.Gln145His of pVHL failed to form a complex with HIF-2alpha and target it for degradation. ('pVHL', 'Gene', '7428', (87, 91)) ('complex', 'Interaction', (109, 116)) ('pVHL', 'Gene', (87, 91)) ('p.Gln145His', 'Mutation', 'rs771727849', (72, 83)) ('tumor', 'Disease', 'MESH:D009369', (53, 58)) ('failed', 'NegReg', (92, 98)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('p.Gln145His', 'Var', (72, 83)) ('tumor', 'Disease', (53, 58)) ('degradation', 'MPA', (151, 162)) 100306 33300499 Mutating Arg247 by a serine can disrupt the long-range electrostatic attraction of pVHL and guide pVHL to an incorrect final binding position. ('pVHL', 'Gene', (98, 102)) ('Mutating Arg247', 'Var', (0, 15)) ('pVHL', 'Gene', '7428', (83, 87)) ('Arg247', 'Var', (9, 15)) ('pVHL', 'Gene', (83, 87)) ('disrupt', 'NegReg', (32, 39)) ('binding', 'Interaction', (125, 132)) ('pVHL', 'Gene', '7428', (98, 102)) ('Arg247 by a serine', 'Mutation', 'rs750181129', (9, 27)) ('long-range electrostatic attraction', 'MPA', (44, 79)) 100308 33300499 Surprisingly, despite being stable in normoxia, p.Phe374Tyr and p.Pro785Thr variants retained interaction with p.VHL. ('VHL', 'Gene', (113, 116)) ('p.Pro785Thr', 'Var', (64, 75)) ('interaction', 'Interaction', (94, 105)) ('VHL', 'Gene', '7428', (113, 116)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (48, 59)) ('p.Phe374Tyr', 'Var', (48, 59)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (64, 75)) 100309 33300499 It is possible these variants escape pVHL-mediated degradation by disrupting E3 ubiquitin ligase sites through minor torsions generated by change in amino acid residues. ('escape', 'PosReg', (30, 36)) ('variants', 'Var', (21, 29)) ('E3 ubiquitin', 'Protein', (77, 89)) ('change', 'Reg', (139, 145)) ('pVHL', 'Gene', '7428', (37, 41)) ('disrupting', 'NegReg', (66, 76)) ('sites', 'Interaction', (97, 102)) ('pVHL', 'Gene', (37, 41)) 100310 33300499 An alternate hypothesis is the p.Phe374Tyr variant may disrupt sumoylation at residues 394 and 497 and thereby modify ubiquitination. ('p.Phe374Tyr', 'Mutation', 'rs150797491', (31, 42)) ('p.Phe374Tyr', 'Var', (31, 42)) ('disrupt', 'NegReg', (55, 62)) ('sumoylation', 'MPA', (63, 74)) ('ubiquitination', 'MPA', (118, 132)) ('modify', 'Reg', (111, 117)) 100311 33300499 In transcriptional studies, p.Phe374Tyr and p.Pro785Thr showed similar transactivation of a HIF-2alpha-reporter gene compared with the positive control p.Pro531Thr. ('HIF-2alpha-reporter gene', 'Gene', (92, 116)) ('p.Pro531Thr', 'Var', (152, 163)) ('p.Pro785Thr', 'Var', (44, 55)) ('transactivation', 'MPA', (71, 86)) ('p.Phe374Tyr', 'Var', (28, 39)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (28, 39)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (152, 163)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (44, 55)) 100312 33300499 However, only p.Thr766Pro was able to induce endogenous HIF-2alpha-responsive CCND1 in a manner comparable to p.Pro531Thr, while none of our HIF-2alpha mutants were able to significantly induce SLC2A1 expression compared to the p.Pro531Thr control. ('p.Pro531Thr', 'SUBSTITUTION', 'None', (228, 239)) ('p.Pro531Thr', 'Var', (228, 239)) ('SLC2A1', 'Gene', '6513', (194, 200)) ('induce', 'PosReg', (38, 44)) ('CCND1', 'Gene', (78, 83)) ('SLC2A1', 'Gene', (194, 200)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (110, 121)) ('CCND1', 'Gene', '595', (78, 83)) ('p.Thr766Pro', 'Var', (14, 25)) ('p.Thr766Pro', 'Mutation', 'rs59901247', (14, 25)) ('induce', 'PosReg', (187, 193)) ('expression', 'MPA', (201, 211)) ('p.Pro531Thr', 'Var', (110, 121)) 100313 33300499 Taken together, these functional studies suggest that germline EPAS1 variants p.Arg247Ser, p.Phe374Tyr and p.Pro785Thr have variable effects on protein stability, pVHL interaction and transcriptional activity that are similar to, but generally more modest, than the pathogenic somatic variant p.Pro531Thr. ('p.Phe374Tyr', 'Mutation', 'rs150797491', (91, 102)) ('protein stability', 'MPA', (144, 161)) ('EPAS1', 'Gene', '2034', (63, 68)) ('EPAS1', 'Gene', (63, 68)) ('pVHL', 'Gene', '7428', (163, 167)) ('effects', 'Reg', (133, 140)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (78, 89)) ('pVHL', 'Gene', (163, 167)) ('transcriptional activity', 'MPA', (184, 208)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (107, 118)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (293, 304)) ('p.Pro785Thr', 'Var', (107, 118)) ('p.Arg247Ser', 'Var', (78, 89)) ('p.Phe374Tyr', 'Var', (91, 102)) ('p.Pro531Thr', 'Var', (293, 304)) 100314 33300499 Mosaic EPAS1 variants clustered around codon 531 are unequivocally associated with the Zhuang-Pacak syndrome. ('variants', 'Var', (13, 21)) ('EPAS1', 'Gene', '2034', (7, 12)) ('EPAS1', 'Gene', (7, 12)) ('associated', 'Reg', (67, 77)) ('Zhuang-Pacak syndrome', 'Disease', (87, 108)) 100315 33300499 These same EPAS1 mutations, presumably somatic, are found in up to 10% of sporadic PPGLs. ('found', 'Reg', (52, 57)) ('PPGLs', 'Disease', (83, 88)) ('EPAS1', 'Gene', '2034', (11, 16)) ('EPAS1', 'Gene', (11, 16)) ('mutations', 'Var', (17, 26)) ('PPGL', 'Chemical', '-', (83, 87)) 100316 33300499 Somatic/mosaic EPAS1 mutations have also been described in PPGLs arising on a background of cyanotic congenital heart disease. ('mutations', 'Var', (21, 30)) ('PPGLs', 'Disease', (59, 64)) ('cyanotic congenital heart disease', 'Disease', (92, 125)) ('described', 'Reg', (46, 55)) ('cyanotic congenital heart disease', 'Disease', 'MESH:D006331', (92, 125)) ('PPGL', 'Chemical', '-', (59, 63)) ('congenital heart disease', 'Phenotype', 'HP:0001627', (101, 125)) ('EPAS1', 'Gene', '2034', (15, 20)) ('EPAS1', 'Gene', (15, 20)) 100317 33300499 Conversely, germline EPAS1 variants in the oxygen-dependent degradation domain (in residues between 533 and 549) were previously identified in subjects with familial erythrocytosis type IV and rarely associated with PPGL alone. ('variants', 'Var', (27, 35)) ('familial erythrocytosis type IV', 'Disease', 'MESH:C536842', (157, 188)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (166, 180)) ('familial erythrocytosis type IV', 'Disease', (157, 188)) ('EPAS1', 'Gene', '2034', (21, 26)) ('EPAS1', 'Gene', (21, 26)) ('PPGL', 'Chemical', '-', (216, 220)) ('identified', 'Reg', (129, 139)) ('oxygen', 'Chemical', 'MESH:D010100', (43, 49)) 100318 33300499 There have been three previous case reports of EPAS1 variant c.1121T>A (p.Phe374Tyr) associated with PPGL. ('PPGL', 'Chemical', '-', (101, 105)) ('EPAS1', 'Gene', '2034', (47, 52)) ('EPAS1', 'Gene', (47, 52)) ('variant c.1121T>A', 'Var', (53, 70)) ('c.1121T>A', 'Var', (61, 70)) ('c.1121T>A', 'Mutation', 'rs150797491', (61, 70)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (72, 83)) ('PPGL', 'Disease', (101, 105)) ('associated', 'Reg', (85, 95)) 100319 33300499 first reported this germline variant in a 50-year-old man with EPO-dependent polycythemia and metastatic PGL, who at age 35 years had a PGL of the organ of Zuckerkandl resected; structural modeling of c.1121T>A (p.Phe374Tyr) suggested possible interference of HIF-2alpha interaction with elongin C as a mechanism for gain-of-function. ('c.1121T>A', 'Mutation', 'rs150797491', (201, 210)) ('c.1121T>A', 'Var', (201, 210)) ('EPO', 'Gene', (63, 66)) ('polycythemia', 'Disease', (77, 89)) ('interaction', 'Interaction', (271, 282)) ('elongin C', 'Gene', '6921', (288, 297)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (212, 223)) ('polycythemia', 'Phenotype', 'HP:0001901', (77, 89)) ('polycythemia', 'Disease', 'MESH:D011086', (77, 89)) ('EPO', 'Gene', '2056', (63, 66)) ('elongin C', 'Gene', (288, 297)) ('gain-of-function', 'PosReg', (317, 333)) ('HIF-2alpha', 'Protein', (260, 270)) 100323 33300499 EPAS1/HIF-2alpha expression is higher in tumors associated with VHL or SDHx mutations, and recent pre-clinical data show HIF-2alpha synergizes with Sdhb deficiency to promote a metastatic cellular phenotype. ('SDH', 'Gene', (71, 74)) ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('EPAS1', 'Gene', '2034', (0, 5)) ('mutations', 'Var', (76, 85)) ('tumors', 'Phenotype', 'HP:0002664', (41, 47)) ('EPAS1', 'Gene', (0, 5)) ('promote', 'PosReg', (167, 174)) ('expression', 'MPA', (17, 27)) ('tumors', 'Disease', (41, 47)) ('VHL', 'Gene', (64, 67)) ('tumors', 'Disease', 'MESH:D009369', (41, 47)) ('SDH', 'Gene', '6390', (71, 74)) ('metastatic cellular phenotype', 'CPA', (177, 206)) ('VHL', 'Gene', '7428', (64, 67)) ('Sdhb deficiency', 'Disease', (148, 163)) ('Sdhb deficiency', 'Disease', 'MESH:D007153', (148, 163)) ('higher', 'PosReg', (31, 37)) 100324 33300499 It is possible therefore even mild hypermorphic activity of the germline EPAS1/HIF-2alpha variants described herein, extended over a patient's lifetime, would also synergize with SDH deficiency (or any other pseudohypoxic stimulus) to promote PPGL development. ('PPGL development', 'CPA', (243, 259)) ('promote', 'PosReg', (235, 242)) ('patient', 'Species', '9606', (133, 140)) ('PPGL', 'Chemical', '-', (243, 247)) ('SDH deficiency', 'Disease', (179, 193)) ('variants', 'Var', (90, 98)) ('EPAS1', 'Gene', '2034', (73, 78)) ('SDH deficiency', 'Disease', 'MESH:D007153', (179, 193)) ('EPAS1', 'Gene', (73, 78)) 100325 33300499 In this regard, it would be most interesting to study PPGLs associated with germline EPAS1 variants for a pseudohypoxic gene expression signature. ('pseudohypoxic gene expression signature', 'MPA', (106, 145)) ('EPAS1', 'Gene', '2034', (85, 90)) ('PPGL', 'Chemical', '-', (54, 58)) ('EPAS1', 'Gene', (85, 90)) ('variants', 'Var', (91, 99)) 100326 33300499 Whether germline EPAS1 variants we have described here truly modify disease expression when co-inherited with pathogenic variants in PPGL driver genes (in particular, those encoding SDH) will require further clinical studies, and in particular would benefit from large kindred studies where penetrance and disease behavior could be assessed as a function of co-inheritance of the putative modifier allele. ('SDH', 'Gene', (182, 185)) ('disease expression', 'MPA', (68, 86)) ('EPAS1', 'Gene', '2034', (17, 22)) ('PPGL', 'Gene', (133, 137)) ('modify', 'Reg', (61, 67)) ('variants', 'Var', (121, 129)) ('EPAS1', 'Gene', (17, 22)) ('PPGL', 'Chemical', '-', (133, 137)) ('variants', 'Var', (23, 31)) ('SDH', 'Gene', '6390', (182, 185)) 100328 33300499 At this time, we believe further evidence is needed before recommending screening for germline (as distinct from somatic) EPAS1 variants in PPGL in routine clinical practice, nor would we recommend family screening for these variants. ('variants', 'Var', (128, 136)) ('EPAS1', 'Gene', '2034', (122, 127)) ('PPGL', 'Chemical', '-', (140, 144)) ('EPAS1', 'Gene', (122, 127)) 100329 33300499 However, these EPAS1 variants may yet be important in pharmacogenomics. ('variants', 'Var', (21, 29)) ('EPAS1', 'Gene', '2034', (15, 20)) ('EPAS1', 'Gene', (15, 20)) 100330 33300499 Recent research has discovered small molecule inhibitors such as PT2385 and PT2977 that competitively bind to the PAS domain of HIF-2alpha and inhibit interaction with HIF-beta, thereby blocking oncogenic transcriptional activities associated with pseudohypoxia. ('PT2977', 'Var', (76, 82)) ('pseudohypoxia', 'Disease', 'None', (248, 261)) ('HIF-2alpha', 'Gene', (128, 138)) ('interaction', 'Interaction', (151, 162)) ('blocking', 'NegReg', (186, 194)) ('PT2385', 'Var', (65, 71)) ('PAS', 'Chemical', 'MESH:D011478', (114, 117)) ('HIF-beta', 'Disease', (168, 176)) ('inhibit', 'NegReg', (143, 150)) ('HIF-beta', 'Disease', 'MESH:D012497', (168, 176)) ('oncogenic transcriptional activities', 'MPA', (195, 231)) ('pseudohypoxia', 'Disease', (248, 261)) 100331 33300499 Genotyping should be included during clinical trials to determine whether these EPAS1 variants affect response to HIF-2alpha antagonist therapies. ('variants', 'Var', (86, 94)) ('affect', 'Reg', (95, 101)) ('EPAS1', 'Gene', '2034', (80, 85)) ('response to', 'MPA', (102, 113)) ('EPAS1', 'Gene', (80, 85)) 100332 33300499 The strength of our study is the number of different approaches we have taken to carefully characterize each germline EPAS1 variant, including allele frequency comparison between cases and controls, Bayesian analyses, in silico predictions, structural modeling and functional assessment using six different assays in transfected cells. ('EPAS1', 'Gene', '2034', (118, 123)) ('variant', 'Var', (124, 131)) ('EPAS1', 'Gene', (118, 123)) 100333 33300499 Our study has several weaknesses: we had very limited clinical information from most subjects, and were not able to examine whether these EPAS1 variants were associated with more aggressive disease or (other than case #3) with polycythemia; statistical comparison with gnomAD controls is limited by the very low MAF for each variant in our cases and we only used transient transfections for our functional studies, which may have missed more subtle effects on transcriptional induction by some variants and/or effects on cell proliferation. ('variants', 'Var', (144, 152)) ('polycythemia', 'Disease', 'MESH:D011086', (227, 239)) ('MAF', 'Gene', '4094', (312, 315)) ('MAF', 'Gene', (312, 315)) ('associated', 'Reg', (158, 168)) ('aggressive disease', 'Disease', 'MESH:D001523', (179, 197)) ('EPAS1', 'Gene', '2034', (138, 143)) ('polycythemia', 'Disease', (227, 239)) ('EPAS1', 'Gene', (138, 143)) ('aggressive disease', 'Disease', (179, 197)) ('polycythemia', 'Phenotype', 'HP:0001901', (227, 239)) ('transcriptional', 'MPA', (460, 475)) ('variants', 'Var', (494, 502)) 100334 33300499 In the absence of significant changes in gene expression, we did not examine protein levels of cyclin D1 or GLUT1 following transfection of these EPAS1 variants. ('cyclin D1', 'Gene', '595', (95, 104)) ('cyclin D1', 'Gene', (95, 104)) ('EPAS1', 'Gene', '2034', (146, 151)) ('variants', 'Var', (152, 160)) ('GLUT1', 'Gene', (108, 113)) ('EPAS1', 'Gene', (146, 151)) ('GLUT1', 'Gene', '6513', (108, 113)) 100335 33300499 Nevertheless, when taken as a whole, our results argue strongly that these germline EPAS1 variants have at best modest effects on protein function. ('protein function', 'MPA', (130, 146)) ('variants', 'Var', (90, 98)) ('EPAS1', 'Gene', (84, 89)) ('EPAS1', 'Gene', '2034', (84, 89)) 100336 33300499 In conclusion, germline EPAS1 variants c.739C>A (p.Arg247Ser), c.1121T>A (p.Phe374Tyr) and c.2353C>A (p.Pro785Thr) share some functional features in common with the known oncogenic somatic variant p.Pro531Thr. ('c.2353C>A', 'Mutation', 'rs61518065', (91, 100)) ('p.Phe374Tyr', 'Mutation', 'rs150797491', (74, 85)) ('p.Pro531Thr', 'Var', (197, 208)) ('c.739C>A', 'Mutation', 'rs750181129', (39, 47)) ('p.Pro785Thr', 'Mutation', 'rs61518065', (102, 113)) ('EPAS1', 'Gene', '2034', (24, 29)) ('variants c.739C>A', 'Var', (30, 47)) ('c.2353C>A', 'Var', (91, 100)) ('EPAS1', 'Gene', (24, 29)) ('c.739C>A', 'Var', (39, 47)) ('c.1121T>A', 'Var', (63, 72)) ('p.Pro531Thr', 'SUBSTITUTION', 'None', (197, 208)) ('c.1121T>A', 'Mutation', 'rs150797491', (63, 72)) ('p.Arg247Ser', 'Mutation', 'rs750181129', (49, 60)) 100341 33308260 After genetic counselling, 10 patients underwent multi-gene next generation sequencing and deletion/duplication analysis, including SDHAF2, SDHA, SDHB, SDHC, SDHD, VHL, NF1, RET, MAX, and TMEM127. ('VHL', 'Gene', (164, 167)) ('RET', 'Gene', '5979', (174, 177)) ('SDHC', 'Gene', '6391', (152, 156)) ('SDHD', 'Gene', '6392', (158, 162)) ('patients', 'Species', '9606', (30, 38)) ('TMEM127', 'Gene', (188, 195)) ('VHL', 'Gene', '7428', (164, 167)) ('SDHB', 'Gene', '6390', (146, 150)) ('NF1', 'Gene', '4763', (169, 172)) ('RET', 'Gene', (174, 177)) ('SDHA', 'Gene', (132, 136)) ('SDHC', 'Gene', (152, 156)) ('SDHD', 'Gene', (158, 162)) ('TMEM127', 'Gene', '55654', (188, 195)) ('SDHA', 'Gene', '6389', (132, 136)) ('deletion/duplication', 'Var', (91, 111)) ('NF1', 'Gene', (169, 172)) ('SDHA', 'Gene', (140, 144)) ('SDHB', 'Gene', (146, 150)) ('SDHAF2', 'Gene', '54949', (132, 138)) ('SDHAF2', 'Gene', (132, 138)) ('SDHA', 'Gene', '6389', (140, 144)) 100342 33308260 Seven of 10 patients (70%) were identified to carry pathogenic variants, including 3 unrelated Chinese patients with head and neck PGL who carried the same SDHD: c.3G > C (p.Met1Ile) variant that was previously reported to be a possible founder variant in Chinese, and 3 patients with urogenital PGL and 1 patient with retroperitoneal PGL who carried different SDHB variants. ('patient', 'Species', '9606', (271, 278)) ('p.Met1Ile', 'Mutation', 'rs80338842', (172, 181)) ('patients', 'Species', '9606', (12, 20)) ('patient', 'Species', '9606', (103, 110)) ('SDHD', 'Gene', '6392', (156, 160)) ('SDHB', 'Gene', '6390', (361, 365)) ('variants', 'Var', (63, 71)) ('c.3G > C', 'Mutation', 'rs80338842', (162, 170)) ('urogenital PGL', 'Disease', (285, 299)) ('PGL', 'Phenotype', 'HP:0002668', (296, 299)) ('patients', 'Species', '9606', (271, 279)) ('PGL', 'Phenotype', 'HP:0002668', (131, 134)) ('patient', 'Species', '9606', (12, 19)) ('SDHD', 'Gene', (156, 160)) ('SDHB', 'Gene', (361, 365)) ('PGL', 'Phenotype', 'HP:0002668', (335, 338)) ('patients', 'Species', '9606', (103, 111)) ('c.3G > C', 'Var', (162, 170)) ('patient', 'Species', '9606', (306, 313)) 100343 33308260 Variant carriers were younger, more likely to present with multiple tumours, or have family history of paraganglioma or pheochromocytoma, than non- variant carriers. ('tumour', 'Phenotype', 'HP:0002664', (68, 74)) ('paraganglioma', 'Disease', 'MESH:D010235', (103, 116)) ('tumours', 'Phenotype', 'HP:0002664', (68, 75)) ('multiple tumours', 'Disease', (59, 75)) ('pheochromocytoma', 'Disease', (120, 136)) ('paraganglioma', 'Phenotype', 'HP:0002668', (103, 116)) ('multiple tumours', 'Disease', 'MESH:D009369', (59, 75)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (120, 136)) ('paraganglioma', 'Disease', (103, 116)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (120, 136)) ('Variant', 'Var', (0, 7)) 100355 33308260 The most common are the paraganglioma syndromes due to variants in the succinate dehydrogenase subunit (SDH) genes, SDHD, SDHAF2, SDHC, SDHB and SDHA, respectively, that are categorised into 5 types (PGL 1-5), with distinct clinical phenotypes. ('SDHC', 'Gene', '6391', (130, 134)) ('SDH', 'Gene', (116, 119)) ('SDH', 'Gene', '6390', (104, 107)) ('paraganglioma', 'Phenotype', 'HP:0002668', (24, 37)) ('SDH', 'Gene', (145, 148)) ('SDHA', 'Gene', '6389', (122, 126)) ('SDHA', 'Gene', (145, 149)) ('SDHB', 'Gene', (136, 140)) ('SDH', 'Gene', '6390', (136, 139)) ('due', 'Reg', (48, 51)) ('succinate dehydrogenase subunit', 'Gene', '6390', (71, 102)) ('SDH', 'Gene', (130, 133)) ('SDH', 'Gene', (122, 125)) ('SDHA', 'Gene', '6389', (145, 149)) ('SDH', 'Gene', (104, 107)) ('succinate dehydrogenase subunit', 'Gene', (71, 102)) ('SDHC', 'Gene', (130, 134)) ('SDH', 'Gene', (136, 139)) ('common', 'Reg', (9, 15)) ('variants', 'Var', (55, 63)) ('SDHD', 'Gene', '6392', (116, 120)) ('SDH', 'Gene', '6390', (116, 119)) ('SDH', 'Gene', '6390', (145, 148)) ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (24, 47)) ('SDHB', 'Gene', '6390', (136, 140)) ('paraganglioma syndromes', 'Disease', (24, 47)) ('SDHD', 'Gene', (116, 120)) ('SDHAF2', 'Gene', '54949', (122, 128)) ('SDHAF2', 'Gene', (122, 128)) ('SDH', 'Gene', '6390', (130, 133)) ('SDH', 'Gene', '6390', (122, 125)) ('PGL', 'Phenotype', 'HP:0002668', (200, 203)) ('SDHA', 'Gene', (122, 126)) 100356 33308260 Among these, variants in PGL1 (SDHD) and PGL4 (SDHB) are most commonly encountered in clinical practice. ('SDHD', 'Gene', (31, 35)) ('variants', 'Var', (13, 21)) ('PGL', 'Phenotype', 'HP:0002668', (41, 44)) ('SDHB', 'Gene', '6390', (47, 51)) ('PGL', 'Phenotype', 'HP:0002668', (25, 28)) ('SDHB', 'Gene', (47, 51)) ('PGL4', 'Gene', '6390', (41, 45)) ('PGL4', 'Gene', (41, 45)) ('SDHD', 'Gene', '6392', (31, 35)) ('PGL1', 'Gene', (25, 29)) 100362 33308260 MAX variants are almost exclusively identified in patients with adrenal pheochromocytoma that are frequently bilateral, while TMEM127 variant carriers most commonly present with single adrenal pheochromocytoma, and occasionally multiple head and neck or thoraco-abdominal PGLs. ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (64, 88)) ('present', 'Reg', (165, 172)) ('variants', 'Var', (4, 12)) ('patients', 'Species', '9606', (50, 58)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (72, 88)) ('variant', 'Var', (134, 141)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (185, 209)) ('adrenal pheochromocytoma', 'Disease', (64, 88)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (193, 209)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (64, 88)) ('PGL', 'Phenotype', 'HP:0002668', (272, 275)) ('adrenal pheochromocytoma', 'Disease', (185, 209)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (185, 209)) ('TMEM127', 'Gene', (126, 133)) ('identified', 'Reg', (36, 46)) ('TMEM127', 'Gene', '55654', (126, 133)) 100382 33308260 Seven patients (70.0%) were found to carry pathogenic variants (SDHB = 4, SDHD = 3). ('SDHB', 'Gene', '6390', (64, 68)) ('pathogenic', 'Reg', (43, 53)) ('SDHD', 'Gene', (74, 78)) ('SDHD', 'Gene', '6392', (74, 78)) ('SDHB', 'Gene', (64, 68)) ('patients', 'Species', '9606', (6, 14)) ('variants', 'Var', (54, 62)) 100383 33308260 Patients who tested positive for SDHB or SDHD pathogenic variants were younger than those who tested negative (mean age 26 +- 4 vs 55 +- 13 years, p = 0.015). ('SDHB', 'Gene', '6390', (33, 37)) ('positive', 'Reg', (20, 28)) ('SDHB', 'Gene', (33, 37)) ('SDHD', 'Gene', '6392', (41, 45)) ('Patients', 'Species', '9606', (0, 8)) ('SDHD', 'Gene', (41, 45)) ('variants', 'Var', (57, 65)) 100384 33308260 All seven patients found with pathogenic variants were diagnosed with PGL/PCC clinically before age 40. ('variants', 'Var', (41, 49)) ('PCC', 'Phenotype', 'HP:0002666', (74, 77)) ('pathogenic', 'Reg', (30, 40)) ('patients', 'Species', '9606', (10, 18)) ('PGL', 'Phenotype', 'HP:0002668', (70, 73)) ('PGL/PCC', 'Disease', (70, 77)) 100387 33308260 Among the seven patients found with pathogenic variants, 3 patients were found to carry pathogenic SDHD variants, including 2 Chinese patients and 1 Chinese-Myanmese patient. ('variants', 'Var', (47, 55)) ('pathogenic', 'Reg', (88, 98)) ('patient', 'Species', '9606', (59, 66)) ('variants', 'Var', (104, 112)) ('patients', 'Species', '9606', (16, 24)) ('patients', 'Species', '9606', (134, 142)) ('SDHD', 'Gene', '6392', (99, 103)) ('patients', 'Species', '9606', (59, 67)) ('SDHD', 'Gene', (99, 103)) ('patient', 'Species', '9606', (166, 173)) ('patient', 'Species', '9606', (16, 23)) ('patient', 'Species', '9606', (134, 141)) 100389 33308260 Four patients were found to carry pathogenic SDHB variants, and all four presented with extra-adrenal thoraco-abdominal paragangliomas, including 3 of the 4 patients with urogenital tract involvement. ('patients', 'Species', '9606', (5, 13)) ('paraganglioma', 'Phenotype', 'HP:0002668', (120, 133)) ('patients', 'Species', '9606', (157, 165)) ('presented with', 'Reg', (73, 87)) ('pathogenic', 'Reg', (34, 44)) ('SDHB', 'Gene', '6390', (45, 49)) ('variants', 'Var', (50, 58)) ('SDHB', 'Gene', (45, 49)) ('paragangliomas', 'Disease', 'MESH:D010235', (120, 134)) ('paragangliomas', 'Disease', (120, 134)) ('paragangliomas', 'Phenotype', 'HP:0002668', (120, 134)) 100390 33308260 These 4 unrelated patients had different SDHB variants, including three clearly pathogenic variants (large deletion = 1, nonsense variant = 1, frameshift variant leading to premature stop signal = 1) and a possibly pathogenic splice donor variant. ('pathogenic', 'Reg', (80, 90)) ('frameshift variant', 'Var', (143, 161)) ('large deletion', 'Var', (101, 115)) ('SDHB', 'Gene', '6390', (41, 45)) ('variants', 'Var', (46, 54)) ('premature stop signal', 'MPA', (173, 194)) ('patients', 'Species', '9606', (18, 26)) ('SDHB', 'Gene', (41, 45)) 100391 33308260 All SDHB variants identified exist in ClinVar. ('variants', 'Var', (9, 17)) ('SDHB', 'Gene', (4, 8)) ('exist', 'Reg', (29, 34)) ('SDHB', 'Gene', '6390', (4, 8)) 100392 33308260 Two adult family members of Patient 7 and three adult family members of Patient 8 who were diagnosed with pathogenic SDHB variants underwent cascade testing; 3 were confirmed to carry the familial SDHB pathogenic variants (mean age 35 years, range 28-42). ('variants', 'Var', (122, 130)) ('SDHB', 'Gene', (117, 121)) ('SDHB', 'Gene', '6390', (197, 201)) ('SDHB', 'Gene', (197, 201)) ('SDHB', 'Gene', '6390', (117, 121)) ('Patient', 'Species', '9606', (72, 79)) ('Patient', 'Species', '9606', (28, 35)) 100399 33308260 In our highly selected population, 70% of patients tested were found to carry pathogenic variants confirming the diagnosis of hereditary PGL/PCC. ('PCC', 'Phenotype', 'HP:0002666', (141, 144)) ('variants', 'Var', (89, 97)) ('PGL', 'Phenotype', 'HP:0002668', (137, 140)) ('pathogenic', 'Reg', (78, 88)) ('PGL/PCC', 'Disease', (137, 144)) ('patients', 'Species', '9606', (42, 50)) 100400 33308260 Interestingly, despite the broad-based testing approach, pathogenic variants were only identified in the two most important SDH genes, namely SDHD and SDHB, with no pathogenic variants identified in any other PGL/PCC causative genes or other hereditary cancer genes. ('variants', 'Var', (68, 76)) ('SDH', 'Gene', '6390', (151, 154)) ('SDH', 'Gene', '6390', (142, 145)) ('PGL', 'Phenotype', 'HP:0002668', (209, 212)) ('SDH', 'Gene', '6390', (124, 127)) ('SDH', 'Gene', (151, 154)) ('hereditary cancer', 'Disease', 'MESH:D009369', (242, 259)) ('SDH', 'Gene', (124, 127)) ('PCC', 'Phenotype', 'HP:0002666', (213, 216)) ('SDHB', 'Gene', '6390', (151, 155)) ('SDH', 'Gene', (142, 145)) ('hereditary cancer', 'Disease', (242, 259)) ('SDHB', 'Gene', (151, 155)) ('SDHD', 'Gene', '6392', (142, 146)) ('cancer', 'Phenotype', 'HP:0002664', (253, 259)) ('SDHD', 'Gene', (142, 146)) 100402 33308260 This has been similarly reported in another study conducted in Singapore, in which 5 of 7 patients with suspected hereditary PGL/PCC who tested positive carried SDHD (n = 2) or SDHB (n = 3) pathogenic variants, with the remaining two patients harbouring VHL pathogenic variants. ('VHL', 'Gene', '7428', (254, 257)) ('SDHB', 'Gene', '6390', (177, 181)) ('SDHB', 'Gene', (177, 181)) ('variants', 'Var', (201, 209)) ('SDHD', 'Gene', (161, 165)) ('SDHD', 'Gene', '6392', (161, 165)) ('patients', 'Species', '9606', (234, 242)) ('PCC', 'Phenotype', 'HP:0002666', (129, 132)) ('PGL', 'Phenotype', 'HP:0002668', (125, 128)) ('VHL', 'Gene', (254, 257)) ('patients', 'Species', '9606', (90, 98)) 100403 33308260 Among the seven patients who were found with pathogenic germline variants in our series, 3 unrelated patients carried the same SDHD: c.3G > C (p.Met1Ile) variant, while 4 patients were found with different SDHB variants. ('patients', 'Species', '9606', (101, 109)) ('c.3G > C', 'Var', (133, 141)) ('patients', 'Species', '9606', (16, 24)) ('p.Met1Ile', 'Mutation', 'rs80338842', (143, 152)) ('patients', 'Species', '9606', (171, 179)) ('SDHD', 'Gene', (127, 131)) ('SDHD', 'Gene', '6392', (127, 131)) ('SDHB', 'Gene', '6390', (206, 210)) ('c.3G > C', 'Mutation', 'rs80338842', (133, 141)) ('SDHB', 'Gene', (206, 210)) 100404 33308260 SDHD and SDHB variant carriers have distinct characteristics, with SDHD carriers typically presenting with head and neck PGLs that are rarely malignant, and SDHB carriers having lesions involving mostly extra-adrenal non-head and neck sites that behave more aggressively. ('SDHB', 'Gene', '6390', (9, 13)) ('SDHB', 'Gene', (9, 13)) ('SDHD', 'Gene', (67, 71)) ('SDHD', 'Gene', '6392', (67, 71)) ('SDHB', 'Gene', '6390', (157, 161)) ('SDHD', 'Gene', '6392', (0, 4)) ('PGL', 'Phenotype', 'HP:0002668', (121, 124)) ('SDHB', 'Gene', (157, 161)) ('SDHD', 'Gene', (0, 4)) ('variant', 'Var', (14, 21)) 100405 33308260 Consistent with many other reports, patients who have younger onset presentation, multiple tumours, metastatic disease or family history of PGL/PCCs, were more likely to be diagnosed with pathogenic SDH variants in our study. ('tumours', 'Phenotype', 'HP:0002664', (91, 98)) ('SDH', 'Gene', '6390', (199, 202)) ('multiple tumours', 'Disease', (82, 98)) ('patients', 'Species', '9606', (36, 44)) ('variants', 'Var', (203, 211)) ('SDH', 'Gene', (199, 202)) ('multiple tumours', 'Disease', 'MESH:D009369', (82, 98)) ('PGL', 'Phenotype', 'HP:0002668', (140, 143)) ('metastatic disease', 'Disease', (100, 118)) ('pathogenic', 'Reg', (188, 198)) ('PCC', 'Phenotype', 'HP:0002666', (144, 147)) ('tumour', 'Phenotype', 'HP:0002664', (91, 97)) 100406 33308260 Interestingly, four-fifths of patients in our series found with pathogenic SDHB variant presented with urogenital PGL (renal = 1, bladder = 3); three were Chinese and the other was of mixed Chinese-Myanmese heritage. ('presented', 'Reg', (88, 97)) ('urogenital PGL', 'Disease', (103, 117)) ('variant', 'Var', (80, 87)) ('SDHB', 'Gene', '6390', (75, 79)) ('patients', 'Species', '9606', (30, 38)) ('pathogenic', 'Reg', (64, 74)) ('SDHB', 'Gene', (75, 79)) ('PGL', 'Phenotype', 'HP:0002668', (114, 117)) 100409 33308260 A study conducted in London on patients with bladder paraganglioma found pathogenic SDHB variants in 6/9 individuals, again mostly in male and younger individuals. ('variants', 'Var', (89, 97)) ('bladder paraganglioma', 'Disease', 'MESH:D001745', (45, 66)) ('SDHB', 'Gene', '6390', (84, 88)) ('pathogenic', 'Reg', (73, 83)) ('SDHB', 'Gene', (84, 88)) ('patients', 'Species', '9606', (31, 39)) ('paraganglioma', 'Phenotype', 'HP:0002668', (53, 66)) ('bladder paraganglioma', 'Disease', (45, 66)) 100411 33308260 In the few Asian genetic studies on urogenital paragangliomas, SDHB exon 7 deletion was reported in an Indian patient with bladder paraganglioma, while SDHB: c.112delC (p.Arg38fs) variant was reported in a Hong Kong Chinese patient with recurrent metastatic bladder paraganglioma. ('SDHB', 'Gene', (152, 156)) ('bladder paraganglioma', 'Disease', 'MESH:D001745', (258, 279)) ('p.Arg38fs', 'Mutation', 'rs398123690', (169, 178)) ('patient', 'Species', '9606', (224, 231)) ('urogenital paragangliomas', 'Disease', (36, 61)) ('c.112delC (p.Arg38fs', 'Var', (158, 178)) ('paragangliomas', 'Phenotype', 'HP:0002668', (47, 61)) ('SDHB', 'Gene', (63, 67)) ('bladder paraganglioma', 'Disease', 'MESH:D001745', (123, 144)) ('paraganglioma', 'Phenotype', 'HP:0002668', (47, 60)) ('patient', 'Species', '9606', (110, 117)) ('urogenital paragangliomas', 'Disease', 'MESH:D014564', (36, 61)) ('bladder paraganglioma', 'Disease', (258, 279)) ('paraganglioma', 'Phenotype', 'HP:0002668', (131, 144)) ('SDHB', 'Gene', '6390', (152, 156)) ('bladder paraganglioma', 'Disease', (123, 144)) ('paraganglioma', 'Phenotype', 'HP:0002668', (266, 279)) ('deletion', 'Var', (75, 83)) ('SDHB', 'Gene', '6390', (63, 67)) ('c.112delC', 'Mutation', 'rs398123690', (158, 167)) 100412 33308260 Contrary to our study in which three of four patients who tested positive for pathogenic SDHB variants had urogenital PGL, a Korean study of 2 patients with pathogenic SDHB variants did not report any urogenital paraganglioma involvement; instead, both patients presented with adrenal pheochromocytoma with one of them behaving in a malignant manner. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (285, 301)) ('paraganglioma', 'Phenotype', 'HP:0002668', (212, 225)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (277, 301)) ('presented with', 'Reg', (262, 276)) ('urogenital paraganglioma involvement', 'Disease', 'MESH:D014564', (201, 237)) ('patients', 'Species', '9606', (253, 261)) ('adrenal pheochromocytoma', 'Disease', (277, 301)) ('patients', 'Species', '9606', (143, 151)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (277, 301)) ('SDHB', 'Gene', '6390', (89, 93)) ('patients', 'Species', '9606', (45, 53)) ('variants', 'Var', (94, 102)) ('SDHB', 'Gene', '6390', (168, 172)) ('urogenital paraganglioma involvement', 'Disease', (201, 237)) ('PGL', 'Phenotype', 'HP:0002668', (118, 121)) ('SDHB', 'Gene', (89, 93)) ('SDHB', 'Gene', (168, 172)) 100413 33308260 More studies are required in Asia to determine if urogenital paragangliomas due to SDHB variants are more common in certain ethnic populations. ('SDHB', 'Gene', (83, 87)) ('paragangliomas', 'Phenotype', 'HP:0002668', (61, 75)) ('paraganglioma', 'Phenotype', 'HP:0002668', (61, 74)) ('urogenital paragangliomas', 'Disease', (50, 75)) ('urogenital paragangliomas', 'Disease', 'MESH:D014564', (50, 75)) ('SDHB', 'Gene', '6390', (83, 87)) ('variants', 'Var', (88, 96)) ('due', 'Reg', (76, 79)) 100415 33308260 Yet, 70% (7/10) patients who underwent genetic testing were confirmed to carry pathogenic SDHD or SDHB variants. ('SDHD', 'Gene', (90, 94)) ('SDHD', 'Gene', '6392', (90, 94)) ('patients', 'Species', '9606', (16, 24)) ('SDHB', 'Gene', '6390', (98, 102)) ('variants', 'Var', (103, 111)) ('SDHB', 'Gene', (98, 102)) ('pathogenic', 'Reg', (79, 89)) 100416 33308260 Both patients with family history of PGL/PCC tested positive, underscoring the importance of family history as a predictor for pathogenic SDH variants. ('PGL', 'Phenotype', 'HP:0002668', (37, 40)) ('patients', 'Species', '9606', (5, 13)) ('SDH', 'Gene', '6390', (138, 141)) ('variants', 'Var', (142, 150)) ('positive', 'Reg', (52, 60)) ('SDH', 'Gene', (138, 141)) ('PCC', 'Phenotype', 'HP:0002666', (41, 44)) 100418 33308260 Separately, our series had identified several asymptomatic first-degree relatives to be SDHB variant carriers from two families (Patients 7 and 8). ('SDHB', 'Gene', '6390', (88, 92)) ('Patients', 'Species', '9606', (129, 137)) ('SDHB', 'Gene', (88, 92)) ('variant', 'Var', (93, 100)) 100420 33308260 Upon confirmation of a pathogenic SDHB variant in him, his cancer-free mother, aged 42, underwent cascade testing and was confirmed to carry the same variant, providing evidence of the maternal origin of the variant. ('cancer', 'Phenotype', 'HP:0002664', (59, 65)) ('variant', 'Var', (39, 46)) ('SDHB', 'Gene', '6390', (34, 38)) ('pathogenic', 'Reg', (23, 33)) ('SDHB', 'Gene', (34, 38)) ('cancer', 'Disease', (59, 65)) ('cancer', 'Disease', 'MESH:D009369', (59, 65)) 100422 33308260 Recent studies have reported a lower range of penetrance of 25-50% in SDHB variant carriers after taking into account the ascertainment of variant carriers. ('variant', 'Var', (75, 82)) ('SDHB', 'Gene', '6390', (70, 74)) ('SDHB', 'Gene', (70, 74)) 100424 33308260 SDH variants are generally distributed along the entire genes, with no obvious hot spots. ('SDH', 'Gene', (0, 3)) ('SDH', 'Gene', '6390', (0, 3)) ('variants', 'Var', (4, 12)) 100425 33308260 However, a small number of founder variants in the SDH genes that occur in high frequencies in certain geographically or culturally isolated groups of people have been reported, mostly amongst the European population. ('SDH', 'Gene', '6390', (51, 54)) ('SDH', 'Gene', (51, 54)) ('people', 'Species', '9606', (151, 157)) ('variants', 'Var', (35, 43)) 100426 33308260 For example, SDHD founder variants were reported amongst the Dutch (SDHD: c.274G > T (p.Asp92Tyr)), Polish (SDHD: c.33C > A (p.Cys11*)), and Italian populations (SDHD: c.325C > T (p.Gln109*)), while an SDHB founder variant (SDHB: c.201-4429_287-933del (p.Cys68Hisfs*21)) has been reported in the Dutch population. ('SDHD', 'Gene', (162, 166)) ('p.Gln109*', 'Mutation', 'rs1060503770', (180, 189)) ('c.274G > T', 'Var', (74, 84)) ('p.Cys11*', 'Mutation', 'rs104894309', (125, 133)) ('SDHB', 'Gene', '6390', (202, 206)) ('c.33C > A', 'Mutation', 'rs104894309', (114, 123)) ('SDHD', 'Gene', '6392', (13, 17)) ('SDHD', 'Gene', '6392', (108, 112)) ('p.Asp92Tyr', 'Mutation', 'rs80338845', (86, 96)) ('SDHD', 'Gene', '6392', (68, 72)) ('p.Cys68Hisfs*21', 'Mutation', 'p.C68HfsX21', (253, 268)) ('SDHD', 'Gene', (13, 17)) ('c.201-4429_287-933del', 'Mutation', 'c.201-4429_287-933del', (230, 251)) ('SDHB', 'Gene', '6390', (224, 228)) ('SDHD', 'Gene', '6392', (162, 166)) ('SDHB', 'Gene', (202, 206)) ('c.325C > T', 'Mutation', 'rs1060503770', (168, 178)) ('SDHD', 'Gene', (108, 112)) ('SDHD', 'Gene', (68, 72)) ('c.274G > T', 'Mutation', 'rs80338845', (74, 84)) ('SDHB', 'Gene', (224, 228)) 100427 33308260 In comparison, there have been limited reports of SDH founder variants in Asians. ('SDH', 'Gene', '6390', (50, 53)) ('variants', 'Var', (62, 70)) ('SDH', 'Gene', (50, 53)) 100428 33308260 Zha et al reported the SDHD: c.3G > C (p.Met1Ile) variant as a possible founder variant in the Chinese population, with haplotype analysis showing three out of four unrelated Chinese families carrying the SDHD: c.3G > C (p.Met1Ile) variant residing in China, Singapore and Hong Kong, to share a common haplotype spanning a 280 kb region. ('SDHD', 'Gene', (205, 209)) ('p.Met1Ile', 'Mutation', 'rs80338842', (39, 48)) ('SDHD', 'Gene', '6392', (23, 27)) ('SDHD', 'Gene', (23, 27)) ('c.3G > C', 'Mutation', 'rs80338842', (29, 37)) ('c.3G > C (p.Met1Ile', 'Var', (211, 230)) ('c.3G > C', 'Mutation', 'rs80338842', (211, 219)) ('SDHD', 'Gene', '6392', (205, 209)) ('p.Met1Ile', 'Mutation', 'rs80338842', (221, 230)) ('c.3G > C', 'Var', (29, 37)) 100429 33308260 In our current study, all three patients who were diagnosed with SDHD pathogenic variants carried the same SDHD: c.3G > C (p.Met1Ile) variant, which results in abolishment of the initiation codon. ('SDHD', 'Gene', (107, 111)) ('patients', 'Species', '9606', (32, 40)) ('c.3G > C', 'Var', (113, 121)) ('SDHD', 'Gene', '6392', (107, 111)) ('p.Met1Ile', 'Mutation', 'rs80338842', (123, 132)) ('initiation codon', 'MPA', (179, 195)) ('c.3G > C', 'Mutation', 'rs80338842', (113, 121)) ('SDHD', 'Gene', '6392', (65, 69)) ('SDHD', 'Gene', (65, 69)) ('variants', 'Var', (81, 89)) ('abolishment', 'NegReg', (160, 171)) 100432 33308260 After she was diagnosed to carry the SDHD: c.3G > C (p.Met1Ile) variant, further questioning revealed that she was of mixed Chinese-Myanmese ancestry, with her affected paternal grandfather being Chinese. ('c.3G > C', 'Var', (43, 51)) ('p.Met1Ile', 'Mutation', 'rs80338842', (53, 62)) ('SDHD', 'Gene', '6392', (37, 41)) ('SDHD', 'Gene', (37, 41)) ('c.3G > C', 'Mutation', 'rs80338842', (43, 51)) 100433 33308260 Maternal imprinting has been reported for SDHD variants, and the clinical manifestation of PGL in this index patient whose variant is paternal in origin is consistent with this notion. ('variants', 'Var', (47, 55)) ('patient', 'Species', '9606', (109, 116)) ('variant', 'Var', (123, 130)) ('PGL', 'Gene', (91, 94)) ('SDHD', 'Gene', (42, 46)) ('PGL', 'Phenotype', 'HP:0002668', (91, 94)) ('SDHD', 'Gene', '6392', (42, 46)) 100440 32862332 The most common sites of involvement in patients that have an SDHB mutation are the bone (78%), lungs (45%), lymph nodes (36%), and liver (35%). ('patients', 'Species', '9606', (40, 48)) ('SDHB', 'Gene', '6390', (62, 66)) ('mutation', 'Var', (67, 75)) ('SDHB', 'Gene', (62, 66)) 100458 32862332 The mutations associated with PHEO/PGL can be grouped into 3 clinically relevant clusters: pseudohypoxia, kinase signaling, and Wnt signaling . ('pseudohypoxia', 'Disease', (91, 104)) ('kinase', 'MPA', (106, 112)) ('PGL', 'Phenotype', 'HP:0002668', (35, 38)) ('pseudohypoxia', 'Disease', 'None', (91, 104)) ('Wnt signaling', 'Disease', (128, 141)) ('PHEO/PGL', 'Disease', (30, 38)) ('PHEO', 'Phenotype', 'HP:0002666', (30, 34)) ('mutations', 'Var', (4, 13)) 100459 32862332 The pseudohypoxia group (cluster I) contains mutations in SDHA, SDHB, SDHC, SDHD, SDHAF2, FH, VHL IDH1/2, MHD2, PHD1/2, and HIF2/EPAS1 . ('SDHD', 'Gene', (76, 80)) ('SDHA', 'Gene', (58, 62)) ('SDHC', 'Gene', (70, 74)) ('SDHB', 'Gene', (64, 68)) ('SDHA', 'Gene', '6389', (82, 86)) ('SDHAF2', 'Gene', (82, 88)) ('SDHA', 'Gene', '6389', (58, 62)) ('SDHAF2', 'Gene', '54949', (82, 88)) ('VHL', 'Gene', '7428', (94, 97)) ('EPAS1', 'Gene', (129, 134)) ('FH', 'Disease', 'MESH:D006938', (90, 92)) ('PHD1/2', 'Gene', '112398;54583', (112, 118)) ('pseudohypoxia', 'Disease', (4, 17)) ('pseudohypoxia', 'Disease', 'None', (4, 17)) ('MHD2', 'Gene', (106, 110)) ('PHD1/2', 'Gene', (112, 118)) ('SDHC', 'Gene', '6391', (70, 74)) ('EPAS1', 'Gene', '2034', (129, 134)) ('SDHD', 'Gene', '6392', (76, 80)) ('mutations', 'Var', (45, 54)) ('SDHB', 'Gene', '6390', (64, 68)) ('SDHA', 'Gene', (82, 86)) ('VHL', 'Gene', (94, 97)) 100460 32862332 The kinase signaling group (cluster II) consists of mutations in RET, NF1, TMEM127, MAX, and HRAS . ('mutations', 'Var', (52, 61)) ('NF1', 'Gene', '4763', (70, 73)) ('RET', 'Gene', '5979', (65, 68)) ('HRAS', 'Gene', '3265', (93, 97)) ('TMEM127', 'Gene', (75, 82)) ('RET', 'Gene', (65, 68)) ('TMEM127', 'Gene', '55654', (75, 82)) ('HRAS', 'Gene', (93, 97)) ('NF1', 'Gene', (70, 73)) 100461 32862332 The Wnt signaling group (cluster III) includes CSDE1 and MAML3 gene mutations. ('MAML3', 'Gene', (57, 62)) ('CSDE1', 'Gene', '7812', (47, 52)) ('mutations', 'Var', (68, 77)) ('CSDE1', 'Gene', (47, 52)) ('MAML3', 'Gene', '55534', (57, 62)) 100462 32862332 Patients with mutations in this group exclusively present as somatic mutations and it has been proposed that this group of mutations results in more aggressive PHEOs/PGLs (Fig. ('PHEOs', 'Phenotype', 'HP:0002666', (160, 165)) ('PHEOs/PGLs', 'Disease', (160, 170)) ('PHEO', 'Phenotype', 'HP:0002666', (160, 164)) ('results in', 'Reg', (133, 143)) ('more', 'PosReg', (144, 148)) ('Patients', 'Species', '9606', (0, 8)) ('PGL', 'Phenotype', 'HP:0002668', (166, 169)) ('PGLs', 'Phenotype', 'HP:0002668', (166, 170)) ('mutations', 'Var', (14, 23)) ('mutations', 'Var', (123, 132)) 100463 32862332 Succinate dehydrogenase (SDH) mutations are found in approximately 27% of patients with advanced PHEO/PGL. ('PHEO', 'Phenotype', 'HP:0002666', (97, 101)) ('SDH', 'Gene', (25, 28)) ('Succinate dehydrogenase', 'Gene', (0, 23)) ('patients', 'Species', '9606', (74, 82)) ('PGL', 'Phenotype', 'HP:0002668', (102, 105)) ('found', 'Reg', (44, 49)) ('mutations', 'Var', (30, 39)) ('Succinate dehydrogenase', 'Gene', '6390', (0, 23)) ('SDH', 'Gene', '6390', (25, 28)) 100464 32862332 first described in 2001 that mutations in succinate dehydrogenase subunit B (SDHB) have been linked to more aggressive tumor behavior, demonstrated as a higher rate of metastasis . ('succinate dehydrogenase subunit B', 'Gene', '6390', (42, 75)) ('aggressive tumor behavior', 'Disease', (108, 133)) ('SDHB', 'Gene', '6390', (77, 81)) ('mutations', 'Var', (29, 38)) ('linked', 'Reg', (93, 99)) ('succinate dehydrogenase subunit B', 'Gene', (42, 75)) ('SDHB', 'Gene', (77, 81)) ('aggressive tumor behavior', 'Disease', 'MESH:D001523', (108, 133)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('metastasis', 'CPA', (168, 178)) 100466 32862332 The metastatic potential attributed to mutations in the other SDH subunits has been described as 21% in SDHA, rarely malignant in SDHC, and < 10% in SDHD. ('SDHC', 'Gene', (130, 134)) ('SDH', 'Gene', '6390', (62, 65)) ('SDHD', 'Gene', '6392', (149, 153)) ('SDHC', 'Gene', '6391', (130, 134)) ('SDH', 'Gene', (130, 133)) ('SDH', 'Gene', '6390', (104, 107)) ('SDHA', 'Gene', (104, 108)) ('SDHD', 'Gene', (149, 153)) ('SDH', 'Gene', (62, 65)) ('SDH', 'Gene', '6390', (149, 152)) ('mutations', 'Var', (39, 48)) ('SDH', 'Gene', '6390', (130, 133)) ('SDH', 'Gene', (104, 107)) ('SDH', 'Gene', (149, 152)) ('metastatic potential', 'CPA', (4, 24)) ('SDHA', 'Gene', '6389', (104, 108)) 100470 32862332 SDH mutations are found in approximately 30% of patients with metastatic PHEO/PGL. ('metastatic PHEO/PGL', 'Disease', (62, 81)) ('PHEO', 'Phenotype', 'HP:0002666', (73, 77)) ('PGL', 'Phenotype', 'HP:0002668', (78, 81)) ('SDH', 'Gene', (0, 3)) ('patients', 'Species', '9606', (48, 56)) ('found', 'Reg', (18, 23)) ('mutations', 'Var', (4, 13)) ('SDH', 'Gene', '6390', (0, 3)) 100471 32862332 SDHB mutations have been linked to more aggressive tumor behavior, and are more likely to present with metastatic disease than patients with sporadic PHEOs/PGLs. ('aggressive tumor behavior', 'Disease', 'MESH:D001523', (40, 65)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('PHEOs', 'Phenotype', 'HP:0002666', (150, 155)) ('present', 'Reg', (90, 97)) ('aggressive tumor behavior', 'Disease', (40, 65)) ('mutations', 'Var', (5, 14)) ('patients', 'Species', '9606', (127, 135)) ('metastatic disease', 'CPA', (103, 121)) ('SDHB', 'Gene', '6390', (0, 4)) ('PGLs', 'Phenotype', 'HP:0002668', (156, 160)) ('PGL', 'Phenotype', 'HP:0002668', (156, 159)) ('PHEO', 'Phenotype', 'HP:0002666', (150, 154)) ('SDHB', 'Gene', (0, 4)) 100478 32862332 Cluster I PHEOs/PGLs, also known as the pseudohypoxia group, are characterized by mutations in SDHA, SDHB, SDHC, SDHD, SDHAF2, FH, VHL, and EPAS1. ('SDHD', 'Gene', (113, 117)) ('EPAS1', 'Gene', (140, 145)) ('pseudohypoxia', 'Disease', (40, 53)) ('pseudohypoxia', 'Disease', 'None', (40, 53)) ('SDHB', 'Gene', '6390', (101, 105)) ('SDHA', 'Gene', (119, 123)) ('PGLs', 'Phenotype', 'HP:0002668', (16, 20)) ('SDHC', 'Gene', (107, 111)) ('SDHA', 'Gene', '6389', (119, 123)) ('SDHAF2', 'Gene', '54949', (119, 125)) ('PHEO', 'Phenotype', 'HP:0002666', (10, 14)) ('SDHAF2', 'Gene', (119, 125)) ('SDHA', 'Gene', (95, 99)) ('EPAS1', 'Gene', '2034', (140, 145)) ('SDHB', 'Gene', (101, 105)) ('VHL', 'Gene', (131, 134)) ('PHEOs', 'Phenotype', 'HP:0002666', (10, 15)) ('SDHA', 'Gene', '6389', (95, 99)) ('FH', 'Disease', 'MESH:D006938', (127, 129)) ('SDHD', 'Gene', '6392', (113, 117)) ('VHL', 'Gene', '7428', (131, 134)) ('mutations', 'Var', (82, 91)) ('SDHC', 'Gene', '6391', (107, 111)) ('PGL', 'Phenotype', 'HP:0002668', (16, 19)) 100482 32862332 These therapies have already been approved for patients with advanced cell renal carcinoma, including patients with SDHB mutations. ('cell renal carcinoma', 'Disease', (70, 90)) ('mutations', 'Var', (121, 130)) ('patients', 'Species', '9606', (102, 110)) ('SDHB', 'Gene', '6390', (116, 120)) ('patients', 'Species', '9606', (47, 55)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (75, 90)) ('carcinoma', 'Phenotype', 'HP:0030731', (81, 90)) ('SDHB', 'Gene', (116, 120)) ('cell renal carcinoma', 'Disease', 'MESH:C538614', (70, 90)) 100485 32862332 All patients who responded were carriers of germline mutations in the cluster I genes, SDHA, SDHB, or in RET . ('RET', 'Gene', (105, 108)) ('cluster I genes', 'Gene', (70, 85)) ('SDHB', 'Gene', (93, 97)) ('SDHA', 'Gene', (87, 91)) ('germline mutations', 'Var', (44, 62)) ('RET', 'Gene', '5979', (105, 108)) ('patients', 'Species', '9606', (4, 12)) ('SDHB', 'Gene', '6390', (93, 97)) ('SDHA', 'Gene', '6389', (87, 91)) 100493 32862332 In cell lines derived from VHL-mutated clear cell renal cell carcinomas (ccRCCs), PT2399 demonstrated a stronger suppression effect than sunitinib. ('clear cell renal cell carcinomas', 'Phenotype', 'HP:0006770', (39, 71)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (50, 71)) ('VHL', 'Gene', (27, 30)) ('clear cell renal cell carcinomas', 'Disease', 'MESH:C538614', (39, 71)) ('clear cell renal cell carcinomas', 'Disease', (39, 71)) ('carcinoma', 'Phenotype', 'HP:0030731', (61, 70)) ('PT2399', 'Chemical', 'MESH:C000614278', (82, 88)) ('carcinomas', 'Phenotype', 'HP:0030731', (61, 71)) ('PT2399', 'Var', (82, 88)) ('suppression', 'NegReg', (113, 124)) ('sunitinib', 'Chemical', 'MESH:D000077210', (137, 146)) ('VHL', 'Gene', '7428', (27, 30)) ('ccRCCs', 'Phenotype', 'HP:0006770', (73, 79)) 100494 32862332 In a phase I clinical trial, PT2385 showed a complete response, partial response, and stable disease in 2%, 12%, and 52% of ccRCC patients, respectively. ('PT2385', 'Var', (29, 35)) ('PT2385', 'Chemical', 'MESH:C000614279', (29, 35)) ('patients', 'Species', '9606', (130, 138)) ('ccRCC', 'Disease', (124, 129)) 100495 32862332 A phase II clinical trial is currently ongoing to evaluate PT2385 in patients with VHL-mutated ccRCCs. ('VHL', 'Gene', '7428', (83, 86)) ('PT2385', 'Var', (59, 65)) ('PT2385', 'Chemical', 'MESH:C000614279', (59, 65)) ('ccRCCs', 'Phenotype', 'HP:0006770', (95, 101)) ('patients', 'Species', '9606', (69, 77)) ('ccRCCs', 'Disease', (95, 101)) ('VHL', 'Gene', (83, 86)) 100497 32862332 Furthermore, cluster I mutations including SDHB, SDHD, VHL, and FH have been associated with renal cell carcinomas, so agents that have shown efficacy with ccRCCs may warrant further study in PHEO/PGL patients. ('patients', 'Species', '9606', (201, 209)) ('ccRCCs', 'Phenotype', 'HP:0006770', (156, 162)) ('carcinoma', 'Phenotype', 'HP:0030731', (104, 113)) ('renal cell carcinomas', 'Disease', (93, 114)) ('SDHB', 'Gene', '6390', (43, 47)) ('carcinomas', 'Phenotype', 'HP:0030731', (104, 114)) ('PGL', 'Phenotype', 'HP:0002668', (197, 200)) ('mutations', 'Var', (23, 32)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (93, 114)) ('SDHB', 'Gene', (43, 47)) ('VHL', 'Gene', '7428', (55, 58)) ('SDHD', 'Gene', '6392', (49, 53)) ('VHL', 'Gene', (55, 58)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (93, 114)) ('PHEO', 'Phenotype', 'HP:0002666', (192, 196)) ('SDHD', 'Gene', (49, 53)) ('FH', 'Disease', 'MESH:D006938', (64, 66)) ('associated', 'Reg', (77, 87)) 100498 32862332 Preclinically, anthracycleines (daunorubicin, doxorubicin, epirubicin, and idarubicin) have shown suppression of cell growth in metastatic PHEOs/PGLs through the inhibition of HIF-1 and HIF-2alpha and as such could be a new therapeutic option for patients with metastatic PHEO/PGL (Fig. ('idarubicin', 'Var', (75, 85)) ('HIF-1', 'Gene', (176, 181)) ('metastatic PHEO/PGL', 'Disease', (261, 280)) ('daunorubicin', 'Chemical', 'MESH:D003630', (32, 44)) ('HIF-2alpha', 'Gene', (186, 196)) ('PGL', 'Phenotype', 'HP:0002668', (277, 280)) ('PHEO', 'Phenotype', 'HP:0002666', (139, 143)) ('idarubicin', 'Chemical', 'MESH:D015255', (75, 85)) ('anthracycleines', 'Chemical', '-', (15, 30)) ('doxorubicin', 'Chemical', 'MESH:D004317', (46, 57)) ('inhibition', 'NegReg', (162, 172)) ('epirubicin', 'Chemical', 'MESH:D015251', (59, 69)) ('PHEOs', 'Phenotype', 'HP:0002666', (139, 144)) ('PHEO', 'Phenotype', 'HP:0002666', (272, 276)) ('cell growth in metastatic PHEOs/PGLs', 'CPA', (113, 149)) ('patients', 'Species', '9606', (247, 255)) ('PGL', 'Phenotype', 'HP:0002668', (145, 148)) ('HIF-2alpha', 'Gene', '2034', (186, 196)) ('suppression', 'NegReg', (98, 109)) ('PGLs', 'Phenotype', 'HP:0002668', (145, 149)) ('HIF-1', 'Gene', '3091', (176, 181)) 100502 32862332 Germline loss-of-function mutations in succinate dehydrogenase, a key Krebs cycle enzyme, are linked to elevated levels of succinate. ('succinate', 'Chemical', 'MESH:D019802', (39, 48)) ('mutations', 'Var', (26, 35)) ('levels of succinate', 'MPA', (113, 132)) ('succinate dehydrogenase', 'Gene', '6390', (39, 62)) ('loss-of-function', 'NegReg', (9, 25)) ('succinate', 'Chemical', 'MESH:D019802', (123, 132)) ('succinate dehydrogenase', 'Gene', (39, 62)) ('elevated', 'PosReg', (104, 112)) 100507 32862332 Cluster II PHEOs/PGLs, also known as the kinase signaling group, are characterized by mutations in RET, NF1, TMEM127, MAX, and HRAS . ('mutations', 'Var', (86, 95)) ('HRAS', 'Gene', (127, 131)) ('RET', 'Gene', (99, 102)) ('PHEO', 'Phenotype', 'HP:0002666', (11, 15)) ('PGLs', 'Phenotype', 'HP:0002668', (17, 21)) ('PGL', 'Phenotype', 'HP:0002668', (17, 20)) ('TMEM127', 'Gene', (109, 116)) ('TMEM127', 'Gene', '55654', (109, 116)) ('PHEOs', 'Phenotype', 'HP:0002666', (11, 16)) ('RET', 'Gene', '5979', (99, 102)) ('HRAS', 'Gene', '3265', (127, 131)) ('NF1', 'Gene', '4763', (104, 107)) ('NF1', 'Gene', (104, 107)) 100508 32862332 Hyperactivation of kinase activity is commonly detected in the Ras/Raf/Erk or PI3K/Akt/mTOR pathways of patients with cluster II PHEO/PGL and mutations in RET, NF1, TMEM127, and MAX. ('Erk', 'Gene', '2048', (71, 74)) ('mTOR', 'Gene', (87, 91)) ('mutations', 'Var', (142, 151)) ('mTOR', 'Gene', '2475', (87, 91)) ('RET', 'Gene', '5979', (155, 158)) ('NF1', 'Gene', (160, 163)) ('Akt', 'Gene', (83, 86)) ('TMEM127', 'Gene', '55654', (165, 172)) ('NF1', 'Gene', '4763', (160, 163)) ('Erk', 'Gene', (71, 74)) ('PGL', 'Phenotype', 'HP:0002668', (134, 137)) ('PHEO', 'Phenotype', 'HP:0002666', (129, 133)) ('kinase activity', 'MPA', (19, 34)) ('RET', 'Gene', (155, 158)) ('Akt', 'Gene', '207', (83, 86)) ('detected', 'Reg', (47, 55)) ('patients', 'Species', '9606', (104, 112)) ('TMEM127', 'Gene', (165, 172)) 100512 32862332 The Wnt signaling group (cluster III) includes mutations in the genes CSDE1 and MAM. ('CSDE1', 'Gene', (70, 75)) ('CSDE1', 'Gene', '7812', (70, 75)) ('MAM', 'Gene', '6445', (80, 83)) ('mutations', 'Var', (47, 56)) ('MAM', 'Gene', (80, 83)) 100525 32862332 Of patients with an initial response to 131I-MIBG, death was reported in 33% after a mean of 23.2 +- 8.1 months (median 22 months) following treatment. ('131I-MIBG', 'Chemical', 'MESH:D019797', (40, 49)) ('131I-MIBG', 'Var', (40, 49)) ('patients', 'Species', '9606', (3, 11)) ('death', 'Disease', 'MESH:D003643', (51, 56)) ('death', 'Disease', (51, 56)) 100526 32862332 Of non-responders, death was reported in 45% after a mean of 14.3 +- 8.3 months (median 13 months) and it was concluded that 131I-MIBG therapy might be a useful palliative treatment. ('death', 'Disease', 'MESH:D003643', (19, 24)) ('death', 'Disease', (19, 24)) ('131I-MIBG', 'Var', (125, 134)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (125, 134)) 100533 32862332 These results suggest that 131I-MIBG can have clinical benefit in patients with locally advanced or metastatic PHEO/PGL. ('metastatic PHEO/PGL', 'Disease', (100, 119)) ('PHEO', 'Phenotype', 'HP:0002666', (111, 115)) ('locally advanced', 'Disease', (80, 96)) ('PGL', 'Phenotype', 'HP:0002668', (116, 119)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (27, 36)) ('131I-MIBG', 'Var', (27, 36)) ('patients', 'Species', '9606', (66, 74)) 100558 32862332 Anecdotal reports suggest that the efficacy of chemotherapy may be high in patients with mutations in SDHB. ('SDHB', 'Gene', '6390', (102, 106)) ('patients', 'Species', '9606', (75, 83)) ('SDHB', 'Gene', (102, 106)) ('mutations', 'Var', (89, 98)) 100578 32862332 Furthermore, a study with 22 patients with progressive or metastatic PHEOs/PGLs were treated with PRRT, with either 90Y-dotatate or 177Lu-dotatate, or with 131I-MIBG treatment. ('metastatic', 'CPA', (58, 68)) ('90Y-dotatate', 'Chemical', 'MESH:C539274', (116, 128)) ('patients', 'Species', '9606', (29, 37)) ('PHEO', 'Phenotype', 'HP:0002666', (69, 73)) ('90Y-dotatate', 'Var', (116, 128)) ('PGLs', 'Phenotype', 'HP:0002668', (75, 79)) ('PHEOs', 'Phenotype', 'HP:0002666', (69, 74)) ('177Lu-dotatate', 'Chemical', 'MESH:C447941', (132, 146)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (156, 165)) ('177Lu-dotatate', 'Var', (132, 146)) ('PGL', 'Phenotype', 'HP:0002668', (75, 78)) 100579 32862332 Patients treated with PRRT had increased PFS and response to treatment compared with 131I-MIBG-treated patients (p < 0.05). ('131I-MIBG', 'Chemical', 'MESH:D019797', (85, 94)) ('increased', 'PosReg', (31, 40)) ('PFS', 'MPA', (41, 44)) ('Patients', 'Species', '9606', (0, 8)) ('PRRT', 'Var', (22, 26)) ('response', 'MPA', (49, 57)) ('patients', 'Species', '9606', (103, 111)) 100585 32862332 There was a correlation between SDHB mutation and O(6)-methylguanine-DNA methyltransferase (MGMT) promoter methylation and MGMT expression and response to temozolomide in the French nationwide independent cohort of 190 PHEOs or PGLs. ('PGLs', 'Phenotype', 'HP:0002668', (228, 232)) ('SDHB', 'Gene', '6390', (32, 36)) ('O(6)-methylguanine-DNA methyltransferase', 'Gene', '4255', (50, 90)) ('mutation', 'Var', (37, 45)) ('temozolomide', 'Chemical', 'MESH:D000077204', (155, 167)) ('PGL', 'Phenotype', 'HP:0002668', (228, 231)) ('SDHB', 'Gene', (32, 36)) ('PHEO', 'Phenotype', 'HP:0002666', (219, 223)) ('MGMT', 'Gene', '4255', (92, 96)) ('MGMT', 'Gene', (92, 96)) ('MGMT', 'Gene', (123, 127)) ('PHEOs', 'Phenotype', 'HP:0002666', (219, 224)) ('MGMT', 'Gene', '4255', (123, 127)) ('response to temozolomide', 'MPA', (143, 167)) 100586 32862332 Fifteen consecutive patients with metastatic PGL were enrolled; ten (67%) carried a mutation in SDHB. ('PGL', 'Phenotype', 'HP:0002668', (45, 48)) ('patients', 'Species', '9606', (20, 28)) ('SDHB', 'Gene', '6390', (96, 100)) ('SDHB', 'Gene', (96, 100)) ('mutation', 'Var', (84, 92)) 100590 32862332 Partial responses were observed only in patients with a mutation in SDHB. ('mutation', 'Var', (56, 64)) ('SDHB', 'Gene', (68, 72)) ('patients', 'Species', '9606', (40, 48)) ('SDHB', 'Gene', '6390', (68, 72)) 100594 32862332 The silencing of MGMT expression as a consequence of MGMT promoter hypermethylation in SDHB-mutated tumors may explain this finding. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('MGMT', 'Gene', '4255', (53, 57)) ('tumors', 'Disease', (100, 106)) ('tumors', 'Disease', 'MESH:D009369', (100, 106)) ('hypermethylation', 'Var', (67, 83)) ('tumors', 'Phenotype', 'HP:0002664', (100, 106)) ('MGMT', 'Gene', (53, 57)) ('MGMT', 'Gene', '4255', (17, 21)) ('silencing', 'NegReg', (4, 13)) ('MGMT', 'Gene', (17, 21)) ('SDHB', 'Gene', '6390', (87, 91)) ('expression', 'MPA', (22, 32)) ('SDHB', 'Gene', (87, 91)) 100615 29618137 Biallelic inactivation of one of the genes encoding for SDH subunits (collectively named SDHx) leads to complete loss of the protein function and the development of diverse group of tumors. ('SDH', 'Gene', (89, 92)) ('tumors', 'Phenotype', 'HP:0002664', (182, 188)) ('tumors', 'Disease', (182, 188)) ('tumors', 'Disease', 'MESH:D009369', (182, 188)) ('protein', 'Protein', (125, 132)) ('SDH', 'Gene', '6390', (56, 59)) ('loss', 'NegReg', (113, 117)) ('Biallelic inactivation', 'Var', (0, 22)) ('SDH', 'Gene', (56, 59)) ('SDH', 'Gene', '6390', (89, 92)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) 100619 29618137 In up to 70 % of cases, pheochromocytomas and paragangliomas (PPGLs) are associated with germline and somatic mutations in about 15 well-characterized PPGL driver or fusions genes. ('mutations', 'Var', (110, 119)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (24, 41)) ('associated', 'Reg', (73, 83)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (24, 60)) ('PPGL', 'Chemical', '-', (151, 155)) ('PPGL', 'Gene', (151, 155)) ('PPGLs', 'Chemical', '-', (62, 67)) ('PPGL', 'Chemical', '-', (62, 66)) ('paragangliomas', 'Phenotype', 'HP:0002668', (46, 60)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (24, 40)) 35580 29618137 described the first PGL syndrome (PGL1) related to a SDH deficiency, due to a mutation in the SDHD. ('PGL syndrome', 'Disease', 'MESH:D010235', (20, 32)) ('SDHD', 'Gene', (94, 98)) ('mutation', 'Var', (78, 86)) ('related', 'Reg', (40, 47)) ('SDH deficiency', 'Disease', (53, 67)) ('SDH deficiency', 'Disease', 'MESH:D007153', (53, 67)) ('PGL syndrome', 'Disease', (20, 32)) ('SDHD', 'Gene', '6392', (94, 98)) 100620 29618137 Later, several familial clusters of PPGLs related to mutations in any gene encoding for subunits of the SDH complex (SDHA-D genes) or its flavination factor (SDHAF2) were described and defined as PGL syndromes PGL1 through PGL5. ('SDHAF2', 'Gene', (158, 164)) ('SDH', 'Gene', '6390', (117, 120)) ('SDH', 'Gene', '6390', (104, 107)) ('SDH', 'Gene', (158, 161)) ('PPGLs', 'Chemical', '-', (36, 41)) ('mutations', 'Var', (53, 62)) ('SDH', 'Gene', (104, 107)) ('PGL5', 'Gene', '6389', (223, 227)) ('PGL syndrome', 'Disease', (196, 208)) ('SDH', 'Gene', (117, 120)) ('related', 'Reg', (42, 49)) ('PGL5', 'Gene', (223, 227)) ('SDH', 'Gene', '6390', (158, 161)) ('PPGLs', 'Disease', (36, 41)) ('SDHAF2', 'Gene', '54949', (158, 164)) ('PGL syndrome', 'Disease', 'MESH:D010235', (196, 208)) 100623 29618137 Another syndrome named Carney's triad is in some cases related to epigenetic down-regulation of SDH, which also results in SDH deficiency. ('SDH', 'Gene', '6390', (96, 99)) ('SDH', 'Gene', (123, 126)) ("Carney's triad", 'Disease', (23, 37)) ('results in', 'Reg', (112, 122)) ('SDH', 'Gene', (96, 99)) ('SDH deficiency', 'Disease', (123, 137)) ('SDH deficiency', 'Disease', 'MESH:D007153', (123, 137)) ('SDH', 'Gene', '6390', (123, 126)) ('epigenetic', 'Var', (66, 76)) 100626 29618137 Succinate enhances tumor growth and survival via hypoxia-inducible factors (HIFs) stabilization with increased expression of HIF-target genes despite normal oxygen supply (pseudohypoxia) and hypermethylation profile that is viewed as a contributing factor to both tumor aggressiveness (epithelial to mesenchymal transition) and loss of chromaffin-specific patterns of gene expression. ('increased', 'PosReg', (101, 110)) ('Succinate', 'Chemical', 'MESH:D019802', (0, 9)) ('HIFs', 'Disease', (76, 80)) ('hypermethylation', 'Var', (191, 207)) ('hypoxia', 'Disease', 'MESH:D000860', (178, 185)) ('enhances', 'PosReg', (10, 18)) ('tumor', 'Disease', (19, 24)) ('hypoxia', 'Disease', (49, 56)) ('HIFs', 'Disease', 'None', (76, 80)) ('tumor', 'Disease', 'MESH:D009369', (19, 24)) ('tumor', 'Disease', (264, 269)) ('oxygen', 'Chemical', 'MESH:D010100', (157, 163)) ('expression', 'MPA', (111, 121)) ('hypoxia', 'Disease', 'MESH:D000860', (49, 56)) ('tumor', 'Disease', 'MESH:D009369', (264, 269)) ('survival', 'CPA', (36, 44)) ('chromaffin', 'Chemical', '-', (336, 346)) ('tumor aggressiveness', 'Disease', (264, 284)) ('aggressiveness', 'Phenotype', 'HP:0000718', (270, 284)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('tumor', 'Phenotype', 'HP:0002664', (264, 269)) ('hypoxia', 'Disease', (178, 185)) ('tumor aggressiveness', 'Disease', 'MESH:D001523', (264, 284)) 100628 29618137 Within a European-American registry of patients with PPGLs, the prevalence of underlying SDHx mutations was 10 % among 371 patients with apparently sporadic PPGLs (6 % SDHB, 4 % SDHD) and 28 % among 121 patients with HNPGL (7 % SDHB, 4 % SDHC, and 17 % SDHD). ('patients', 'Species', '9606', (39, 47)) ('SDH', 'Gene', '6390', (238, 241)) ('SDH', 'Gene', (178, 181)) ('SDHD', 'Gene', '6392', (178, 182)) ('PPGLs', 'Disease', (157, 162)) ('SDHD', 'Gene', (178, 182)) ('SDHB', 'Gene', (168, 172)) ('SDH', 'Gene', (89, 92)) ('SDHB', 'Gene', '6390', (228, 232)) ('SDH', 'Gene', '6390', (89, 92)) ('SDH', 'Gene', '6390', (228, 231)) ('SDHD', 'Gene', '6392', (253, 257)) ('SDH', 'Gene', (168, 171)) ('patients', 'Species', '9606', (123, 131)) ('patients', 'Species', '9606', (203, 211)) ('SDH', 'Gene', '6390', (253, 256)) ('SDH', 'Gene', (238, 241)) ('SDHC', 'Gene', '6391', (238, 242)) ('mutations', 'Var', (94, 103)) ('PPGLs', 'Chemical', '-', (157, 162)) ('SDHD', 'Gene', (253, 257)) ('SDHB', 'Gene', (228, 232)) ('SDH', 'Gene', '6390', (178, 181)) ('SDH', 'Gene', (228, 231)) ('PPGLs', 'Chemical', '-', (53, 58)) ('SDH', 'Gene', (253, 256)) ('SDHB', 'Gene', '6390', (168, 172)) ('SDHC', 'Gene', (238, 242)) ('SDH', 'Gene', '6390', (168, 171)) 100629 29618137 Beyond PPGLs, these mutations can also predispose a patient to renal cell carcinoma, gastrointestinal stromal tumors, pituitary adenomas, and rarely neuroblastomas and carcinoids. ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (63, 83)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (118, 136)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (85, 116)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (63, 83)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (85, 116)) ('carcinoids', 'Phenotype', 'HP:0100570', (168, 178)) ('neuroblastomas and carcinoids', 'Disease', 'MESH:D009447', (149, 178)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('carcinoma', 'Phenotype', 'HP:0030731', (74, 83)) ('predispose', 'Reg', (39, 49)) ('PPGLs', 'Chemical', '-', (7, 12)) ('tumors', 'Phenotype', 'HP:0002664', (110, 116)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (118, 136)) ('gastrointestinal stromal tumors', 'Disease', (85, 116)) ('patient', 'Species', '9606', (52, 59)) ('renal cell carcinoma', 'Disease', (63, 83)) ('pituitary adenomas', 'Disease', (118, 136)) ('mutations', 'Var', (20, 29)) 100644 29618137 Usually, dopamine or MTY elevation is associated with an increase in norepinephrine or normetanephrine, which is commonly seen in patients with SDHx mutations. ('SDH', 'Gene', '6390', (144, 147)) ('mutations', 'Var', (149, 158)) ('dopamine', 'MPA', (9, 17)) ('SDH', 'Gene', (144, 147)) ('MTY elevation', 'MPA', (21, 34)) ('dopamine', 'Chemical', 'MESH:D004298', (9, 17)) ('norepinephrine', 'MPA', (69, 83)) ('patients', 'Species', '9606', (130, 138)) ('increase', 'PosReg', (57, 65)) ('MTY', 'Chemical', 'MESH:C001746', (21, 24)) ('normetanephrine', 'MPA', (87, 102)) ('normetanephrine', 'Chemical', 'MESH:D009647', (87, 102)) ('norepinephrine', 'Chemical', 'MESH:D009638', (69, 83)) 100648 29618137 Recent studies have shown that SDHx-PPGL are better visualized by 68Ga-DOTA-SSAs than 18F-FDOPA PET/CT or even 18F-FDG PET/CT, especially those located in head and neck or metastatic ones. ('68Ga-DOTA-SSAs', 'Var', (66, 80)) ('PPGL', 'Chemical', '-', (36, 40)) ('SDH', 'Gene', '6390', (31, 34)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (86, 95)) ('SDH', 'Gene', (31, 34)) ('18F-FDG', 'Chemical', 'MESH:D019788', (111, 118)) 100657 29618137 As previously detailed, SDH mutations predispose to other tumor types with some malignancies, such as RCC and GIST, that may significantly impact the prognosis of the disease. ('impact', 'Reg', (139, 145)) ('tumor', 'Phenotype', 'HP:0002664', (58, 63)) ('tumor', 'Disease', (58, 63)) ('SDH', 'Gene', '6390', (24, 27)) ('GIST', 'Disease', (110, 114)) ('RCC', 'Disease', 'MESH:C538614', (102, 105)) ('malignancies', 'Disease', 'MESH:D009369', (80, 92)) ('SDH', 'Gene', (24, 27)) ('RCC', 'Disease', (102, 105)) ('tumor', 'Disease', 'MESH:D009369', (58, 63)) ('predispose', 'Reg', (38, 48)) ('mutations', 'Var', (28, 37)) ('malignancies', 'Disease', (80, 92)) 100668 29618137 PRRT could also be viewed as an efficient synergistic combination to immunotherapy via dose delivery and subsequent induction of de novo antitumor immune responses. ('tumor', 'Disease', 'MESH:D009369', (141, 146)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('PRRT', 'Var', (0, 4)) ('tumor', 'Disease', (141, 146)) 100684 27171833 These mainly include familial PGL due to succinate dehydrogenase subunit (SDHx) mutations, multiple endocrine neoplasia type 2A or B (MEN2A, MEN2B), neurofibromatosis type 1 (NF-1), and von Hippel-Lindau syndrome (VHL). ('MEN2A', 'Gene', (134, 139)) ('MEN2A', 'Gene', '5979', (134, 139)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (100, 119)) ('NF-1', 'Gene', (175, 179)) ('VHL', 'Gene', (214, 217)) ('neurofibromatosis type 1', 'Gene', (149, 173)) ('SDHx', 'Gene', (74, 78)) ('mutations', 'Var', (80, 89)) ('endocrine neoplasia', 'Disease', (100, 119)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (149, 166)) ('VHL', 'Gene', '7428', (214, 217)) ('von Hippel-Lindau syndrome', 'Disease', (186, 212)) ('familial PGL', 'Disease', (21, 33)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (186, 212)) ('neurofibromatosis type 1', 'Gene', '4763', (149, 173)) ('endocrine neoplasia', 'Disease', 'MESH:D009377', (100, 119)) ('neoplasia', 'Phenotype', 'HP:0002664', (110, 119)) ('MEN2B', 'Gene', (141, 146)) ('MEN2B', 'Gene', '5979', (141, 146)) ('NF-1', 'Gene', '4763', (175, 179)) 100703 27171833 Genetic testing was performed for mutations or large deletions in RET, VHL, SDHA, SDHB, SDHC, and SDHD. ('SDHA', 'Gene', '6389', (76, 80)) ('SDHC', 'Gene', '6391', (88, 92)) ('VHL', 'Gene', (71, 74)) ('SDHB', 'Gene', '6390', (82, 86)) ('SDHD', 'Gene', '6392', (98, 102)) ('SDHA', 'Gene', (76, 80)) ('VHL', 'Gene', '7428', (71, 74)) ('SDHB', 'Gene', (82, 86)) ('RET', 'Gene', (66, 69)) ('SDHD', 'Gene', (98, 102)) ('SDHC', 'Gene', (88, 92)) ('mutations', 'Var', (34, 43)) ('RET', 'Gene', '5979', (66, 69)) 100719 27171833 Five patients harbored germline mutations in SDHB, 1 patient was found to have a mutation in RET consistent with MEN2A, 1 patient had familial VHL, 1 patient had a mutation in SDHA ( Table 3). ('SDHA', 'Gene', '6389', (176, 180)) ('MEN2A', 'Gene', (113, 118)) ('patient', 'Species', '9606', (5, 12)) ('germline mutations', 'Var', (23, 41)) ('MEN2A', 'Gene', '5979', (113, 118)) ('patients', 'Species', '9606', (5, 13)) ('patient', 'Species', '9606', (150, 157)) ('patient', 'Species', '9606', (122, 129)) ('RET', 'Gene', '5979', (93, 96)) ('SDHA', 'Gene', (176, 180)) ('SDHB', 'Gene', '6390', (45, 49)) ('VHL', 'Gene', (143, 146)) ('SDHB', 'Gene', (45, 49)) ('RET', 'Gene', (93, 96)) ('VHL', 'Gene', '7428', (143, 146)) ('patient', 'Species', '9606', (53, 60)) 100732 27171833 The clinical course of pheochromocytoma may be adversely affected by drug administration, and severe crises have been induced in adults by the stimulants ergotamine, caffeine, pseudoephederine, and sympathomimetic amines. ('amines', 'Chemical', 'MESH:D000588', (214, 220)) ('caffeine', 'Chemical', 'MESH:D002110', (166, 174)) ('pheochromocytoma', 'Disease', (23, 39)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (23, 39)) ('pseudoephederine', 'Chemical', '-', (176, 192)) ('ergotamine', 'Chemical', 'MESH:D004878', (154, 164)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (23, 39)) ('pseudoephederine', 'Var', (176, 192)) 100746 27171833 One important limitation of our study is the lack of a control group consisting of patients with solid tumors that do not release catecholamines, as the presence of a tumor itself may make a child more vulnerable to developing anxiety. ('solid tumors', 'Disease', 'MESH:D009369', (97, 109)) ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('developing', 'MPA', (216, 226)) ('tumors', 'Phenotype', 'HP:0002664', (103, 109)) ('tumor', 'Disease', (103, 108)) ('anxiety', 'Disease', (227, 234)) ('anxiety', 'Phenotype', 'HP:0000739', (227, 234)) ('catecholamines', 'Chemical', 'MESH:D002395', (130, 144)) ('child', 'Species', '9606', (191, 196)) ('make', 'Reg', (184, 188)) ('presence', 'Var', (153, 161)) ('tumor', 'Disease', 'MESH:D009369', (167, 172)) ('tumor', 'Phenotype', 'HP:0002664', (167, 172)) ('anxiety', 'Disease', 'MESH:D001007', (227, 234)) ('patients', 'Species', '9606', (83, 91)) ('solid tumors', 'Disease', (97, 109)) ('tumor', 'Disease', 'MESH:D009369', (103, 108)) ('tumor', 'Disease', (167, 172)) 100758 32438306 Overall, 1559 identical variants coexisted in parts of adrenal cortical adenoma and pheochromocytoma, which mainly (85.8%) originated from germline mutations. ('variants', 'Var', (24, 32)) ('pheochromocytoma', 'Disease', (84, 100)) ('originated from', 'Reg', (123, 138)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (84, 100)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (84, 100)) ('adrenal cortical adenoma', 'Disease', 'MESH:D018246', (55, 79)) ('coexisted', 'Reg', (33, 42)) ('adrenal cortical adenoma', 'Disease', (55, 79)) 100759 32438306 These enriched mutations were engaged in stemness control, coherent with substantial expression of the stemness markers (SOX2, CD44 and OCT4) in both parts. ('SOX2', 'Gene', (121, 125)) ('CD44', 'Gene', '960', (127, 131)) ('mutations', 'Var', (15, 24)) ('CD44', 'Gene', (127, 131)) ('OCT4', 'Gene', (136, 140)) 100761 32438306 The germline mutations were also enriched in signaling involving cancer proliferation, hypoxia inducible factor-1, focal adhesion and extracellular matrix receptor interaction. ('focal adhesion', 'MPA', (115, 129)) ('cancer', 'Phenotype', 'HP:0002664', (65, 71)) ('cancer', 'Disease', 'MESH:D009369', (65, 71)) ('germline mutations', 'Var', (4, 22)) ('hypoxia', 'Disease', 'MESH:D000860', (87, 94)) ('cancer', 'Disease', (65, 71)) ('hypoxia', 'Disease', (87, 94)) 100762 32438306 Somatic mutations affecting mitogen-activated protein kinase signaling, glycolysis and the citrate cycle were found in some tumor elements. ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('mitogen-activated protein kinase signaling', 'MPA', (28, 70)) ('tumor', 'Disease', (124, 129)) ('mutations', 'Var', (8, 17)) ('citrate', 'Chemical', 'MESH:D019343', (91, 98)) ('citrate', 'Enzyme', (91, 98)) ('affecting', 'Reg', (18, 27)) ('glycolysis', 'MPA', (72, 82)) ('tumor', 'Disease', 'MESH:D009369', (124, 129)) 100764 32438306 Germline mutations involving the stemness regulation and cancer proliferative signaling may drive intermixed tumor formation. ('Germline mutations', 'Var', (0, 18)) ('stemness', 'CPA', (33, 41)) ('cancer', 'Disease', 'MESH:D009369', (57, 63)) ('cancer', 'Disease', (57, 63)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('cancer', 'Phenotype', 'HP:0002664', (57, 63)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('drive', 'Reg', (92, 97)) ('tumor', 'Disease', (109, 114)) 100785 32438306 The further pathway enrichment analysis, illustrated by the Kyoto Encyclopedia of Genes and Genomes (KEGG) using DAVID web (https://david.ncifcrf.gov/), demonstrated the top 6 enriched pathways sequentially linked to cancer pathway (hsa05200; 3.2%), endocytosis (hsa04144; 2.1%), focal adhesion (hsa04510; 1.8%), protein digestion and absorption (hsa04974; 1.7%), extracellular matrix (ECM)-receptor interaction (hsa04512; 1.3%), and hypoxia-inducible factors-1 (HIF-1) signaling pathway (hsa04066; 1.3%). ('HIF-1', 'Gene', '3091', (463, 468)) ('HIF-1', 'Gene', (463, 468)) ('endocytosis', 'MPA', (250, 261)) ('protein', 'Protein', (313, 320)) ('hypoxia-inducible factors-1', 'Gene', '3091', (434, 461)) ('cancer', 'Disease', (217, 223)) ('linked', 'Reg', (207, 213)) ('cancer', 'Disease', 'MESH:D009369', (217, 223)) ('hypoxia-inducible factors-1', 'Gene', (434, 461)) ('focal adhesion', 'MPA', (280, 294)) ('cancer', 'Phenotype', 'HP:0002664', (217, 223)) ('hsa04512', 'Var', (413, 421)) 100786 32438306 Furthermore, the 32 genes enriched in "pathways in cancer" were clarified by the KEGG system to demonstrate signaling involving PI3K-Akt (map04151, 34.85%), 3',5' cyclic adenosine monophosphate (cAMP) (map04024, 17.4%), Rap1 (map04015,17.4%), Hedgehog (map04340, 13%), apoptosis (map04210, 13%), HIFs (map04066, 13%), and pathways regulating pluripotency of stem cells (Wnt, mammalian wingless-type integration) signaling (map04550, 13%) (https://ppt.cc/fH7DEx, supplementary Table 1). ('Rap1', 'Gene', '5906', (220, 224)) ('map04550', 'Var', (423, 431)) ('map04066', 'Var', (302, 310)) ('HIFs', 'Disease', (296, 300)) ('map04015,17.4', 'Var', (226, 239)) ('mammalian', 'Species', '9606', (375, 384)) ('adenosine', 'Chemical', 'MESH:D000241', (170, 179)) ('map04340', 'Var', (253, 261)) ('map04024', 'Var', (202, 210)) ('Akt', 'Gene', '207', (133, 136)) ('map04210', 'Var', (280, 288)) ('cancer', 'Phenotype', 'HP:0002664', (51, 57)) ('Rap1', 'Gene', (220, 224)) ('Akt', 'Gene', (133, 136)) ('cAMP', 'Chemical', 'MESH:D000242', (195, 199)) ('HIFs', 'Disease', 'None', (296, 300)) ('cancer', 'Disease', (51, 57)) ('cancer', 'Disease', 'MESH:D009369', (51, 57)) 100789 32438306 These mutants were previously found to regulate expression of the stemness markers, SOX2, OCT4, and CD44, in a direct or indirect manner. ('regulate', 'Reg', (39, 47)) ('mutants', 'Var', (6, 13)) ('expression', 'MPA', (48, 58)) ('OCT4', 'Gene', (90, 94)) ('SOX2', 'Gene', (84, 88)) ('CD44', 'Gene', '960', (100, 104)) ('CD44', 'Gene', (100, 104)) 100790 32438306 Our results displayed a greater mutation burden in the ACA than in the PHEO part, which were linked to three function processes: kinase signaling, energy metabolism involving glycolysis and the citrate cycle, and focal adhesion/ECM-receptor interaction. ('citrate', 'Chemical', 'MESH:D019343', (194, 201)) ('mutation', 'Var', (32, 40)) ('glycolysis', 'MPA', (175, 185)) 100791 32438306 Analysis of the enriched KEGG pathways mapped the ACA-specific somatic mutations to the PI3K-Akt signaling pathway (hsa04151; 5.7%), Carbon metabolism (hsa01200; 4.4%), Focal adhesion (hsa04510; 4.4%), Biosynthesis of amino acids (hsa01230; 3.8%), and ECM-receptor interaction (hsa04512; 3.8%) (https://ppt.cc/fH7DEx, Supplementary Table 2). ('Carbon', 'MPA', (133, 139)) ('Akt', 'Gene', (93, 96)) ('hsa01200', 'Var', (152, 160)) ('hsa04151', 'Var', (116, 124)) ('hsa04512;', 'Var', (278, 287)) ('mutations', 'Var', (71, 80)) ('hsa01230;', 'Var', (231, 240)) ('Akt', 'Gene', '207', (93, 96)) 100793 32438306 Only one PHEO-specific missense mutation (MAPKAPK2, NM_032960.3, c.46G>C, p.A16P) was detected involving mitogen-activated protein kinase (MAPK) signaling (https://ppt.cc/fH7DEx, Supplementary Table 3). ('c.46G>C', 'Var', (65, 72)) ('MAPKAPK2', 'Gene', '9261', (42, 50)) ('MAPKAPK2', 'Gene', (42, 50)) ('p.A16P', 'Mutation', 'p.A16P', (74, 80)) ('c.46G>C', 'Mutation', 'c.46G>C', (65, 72)) 100799 32438306 Overall, 35 proteins from 29 germline mutations were involved in stemness regulation, which may be the "first hit" driving ACA and PHEO tumor formation. ('involved', 'Reg', (53, 61)) ('tumor', 'Disease', 'MESH:D009369', (136, 141)) ('stemness', 'CPA', (65, 73)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('tumor', 'Disease', (136, 141)) ('germline mutations', 'Var', (29, 47)) 100800 32438306 Additional mutations affecting kinase signaling, focal adhesion/ECM-receptor interaction, and HIF-1 signaling pathway may accelerate tumor growth and intimately admix ACA and PHEO together. ('mutations', 'Var', (11, 20)) ('HIF-1', 'Gene', '3091', (94, 99)) ('accelerate', 'PosReg', (122, 132)) ('tumor', 'Disease', 'MESH:D009369', (133, 138)) ('affecting', 'Reg', (21, 30)) ('HIF-1', 'Gene', (94, 99)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('kinase', 'Pathway', (31, 37)) ('tumor', 'Disease', (133, 138)) ('focal adhesion/ECM-receptor interaction', 'Protein', (49, 88)) 100816 32438306 Since beta-catenin mutation is found in both aldosterone- and cortisol-producing adenoma, Wnt/beta-catenin signaling is critical for adrenal tumorigenesis. ('mutation', 'Var', (19, 27)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('adenoma', 'Disease', (81, 88)) ('adrenal tumor', 'Disease', (133, 146)) ('beta-catenin', 'Gene', '1499', (6, 18)) ('adenoma', 'Disease', 'MESH:D000236', (81, 88)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (133, 146)) ('beta-catenin', 'Gene', (94, 106)) ('aldosterone-', 'Disease', (45, 57)) ('aldosterone', 'Chemical', 'MESH:D000450', (45, 56)) ('beta-catenin', 'Gene', '1499', (94, 106)) ('cortisol', 'Chemical', 'MESH:D006854', (62, 70)) ('adrenal tumor', 'Disease', 'MESH:D000310', (133, 146)) ('beta-catenin', 'Gene', (6, 18)) 100821 32438306 Aberrant cAMP-PKA signaling correlates with many proliferative adrenocortical diseases both in human and mouse models. ('cAMP', 'Chemical', 'MESH:D000242', (9, 13)) ('adrenocortical diseases', 'Disease', 'MESH:D018268', (63, 86)) ('human', 'Species', '9606', (95, 100)) ('Aberrant', 'Var', (0, 8)) ('cAMP-PKA', 'Gene', (9, 17)) ('adrenocortical diseases', 'Phenotype', 'HP:0008207', (63, 86)) ('mouse', 'Species', '10090', (105, 110)) ('adrenocortical diseases', 'Disease', (63, 86)) 100822 32438306 Both ACA and PHEO tissues in MCT had enriched gene mutations involving the above pathways, suggesting that abnormal paracrine regulation in adrenocortical stem cells may cause greater tumor outgrowth and hypercortisolism. ('paracrine regulation', 'MPA', (116, 136)) ('hypercortisolism', 'Disease', (204, 220)) ('tumor', 'Disease', 'MESH:D009369', (184, 189)) ('tumor', 'Phenotype', 'HP:0002664', (184, 189)) ('abnormal', 'Var', (107, 115)) ('greater', 'PosReg', (176, 183)) ('tumor', 'Disease', (184, 189)) ('hypercortisolism', 'Phenotype', 'HP:0003118', (204, 220)) ('cause', 'Reg', (170, 175)) ('hypercortisolism', 'Disease', 'MESH:D003480', (204, 220)) 100823 32438306 The Cancer Genome Atlas (TCGA) project recognized a driver mutation in 73% of pheochromocytoma, 27% harboring a germline mutation with autosomal dominant inheritance, and 46% as a somatic mutation in sporadic cases. ('pheochromocytoma', 'Disease', (78, 94)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (78, 94)) ('Cancer', 'Phenotype', 'HP:0002664', (4, 10)) ('mutation', 'Var', (59, 67)) ('Cancer', 'Disease', (4, 10)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (78, 94)) ('Cancer', 'Disease', 'MESH:D009369', (4, 10)) 100829 32438306 One European study, assembling a tissue array of 166 pheochromocytomas and 42 paragangliomas, documented expression of stem cell markers (SOX2, LIN28, NGFR, THY1) in more than 10% of tumors, significantly associated with SDHx mutation. ('paragangliomas', 'Disease', (78, 92)) ('mutation', 'Var', (226, 234)) ('tumor', 'Phenotype', 'HP:0002664', (183, 188)) ('tumors', 'Disease', (183, 189)) ('LIN28', 'Gene', (144, 149)) ('LIN28', 'Gene', '79727', (144, 149)) ('NGFR', 'Gene', '4804', (151, 155)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (53, 69)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (53, 70)) ('associated', 'Reg', (205, 215)) ('tumors', 'Disease', 'MESH:D009369', (183, 189)) ('pheochromocytomas', 'Disease', (53, 70)) ('paragangliomas', 'Disease', 'MESH:D010235', (78, 92)) ('paragangliomas', 'Phenotype', 'HP:0002668', (78, 92)) ('SDHx', 'Gene', (221, 225)) ('NGFR', 'Gene', (151, 155)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (53, 70)) ('THY1', 'Gene', '7070', (157, 161)) ('THY1', 'Gene', (157, 161)) ('tumors', 'Phenotype', 'HP:0002664', (183, 189)) 100830 32438306 However, PHEO tumorigenesis could be coherently attributable to the germline mutations involving HIF-1, Wnt- and PI3k-Akt kinase signaling as well as stemness activation. ('HIF-1', 'Gene', '3091', (97, 102)) ('tumor', 'Disease', (14, 19)) ('PHEO', 'Disease', (9, 13)) ('Akt', 'Gene', (118, 121)) ('HIF-1', 'Gene', (97, 102)) ('mutations', 'Var', (77, 86)) ('tumor', 'Disease', 'MESH:D009369', (14, 19)) ('Akt', 'Gene', '207', (118, 121)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) 100837 32438306 To elucidate the mechanism of the closely intermixed ACA and PHEO tissues in MCT, we assumed coordinating all these mutations involving cAMP, Rap 1, apoptosis, and focal adhesion/ECM-receptor interaction may cause aberrant cellular proliferation, adhesion and cell junction behavior to develop MCT. ('adhesion', 'CPA', (247, 255)) ('cell junction behavior', 'CPA', (260, 282)) ('MCT', 'Disease', (294, 297)) ('apoptosis', 'CPA', (149, 158)) ('focal adhesion/ECM-receptor', 'Protein', (164, 191)) ('cAMP', 'Gene', (136, 140)) ('develop', 'PosReg', (286, 293)) ('Rap 1', 'Gene', (142, 147)) ('cAMP', 'Chemical', 'MESH:D000242', (136, 140)) ('mutations', 'Var', (116, 125)) ('Rap 1', 'Gene', '5906', (142, 147)) ('cellular proliferation', 'CPA', (223, 245)) ('cause', 'Reg', (208, 213)) 100852 32438306 These missense mutations may alter the tumor metabolism and accelerate greater tumor burden. ('accelerate', 'PosReg', (60, 70)) ('tumor', 'Disease', (79, 84)) ('tumor', 'Disease', 'MESH:D009369', (39, 44)) ('missense mutations', 'Var', (6, 24)) ('tumor metabolism', 'Disease', (39, 55)) ('tumor metabolism', 'Disease', 'MESH:D008659', (39, 55)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('tumor', 'Disease', (39, 44)) ('tumor', 'Disease', 'MESH:D009369', (79, 84)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) ('alter', 'Reg', (29, 34)) 100854 32438306 This dedifferentiation capacity of cancer cells may be either inherited (hierarchical theory) or acquired via mutations that lead to a stem-cell-like permissive epigenome (stochastic theory). ('mutations', 'Var', (110, 119)) ('cancer', 'Phenotype', 'HP:0002664', (35, 41)) ('cancer', 'Disease', 'MESH:D009369', (35, 41)) ('stem-cell-like permissive epigenome', 'MPA', (135, 170)) ('dedifferentiation capacity', 'CPA', (5, 31)) ('lead to', 'Reg', (125, 132)) ('cancer', 'Disease', (35, 41)) 100860 32438306 This study provided a speculative tumorigenesis for MCT that germline mutations involved in stemness activation and cancer proliferative signaling may drive the intermixed tumor formation. ('tumor', 'Phenotype', 'HP:0002664', (172, 177)) ('stemness', 'CPA', (92, 100)) ('tumor', 'Disease', (34, 39)) ('tumor', 'Disease', (172, 177)) ('cancer', 'Disease', (116, 122)) ('germline mutations', 'Var', (61, 79)) ('cancer', 'Disease', 'MESH:D009369', (116, 122)) ('drive', 'PosReg', (151, 156)) ('cancer', 'Phenotype', 'HP:0002664', (116, 122)) ('tumor', 'Disease', 'MESH:D009369', (34, 39)) ('tumor', 'Disease', 'MESH:D009369', (172, 177)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) 100905 32393369 We tested the ability of BioBombe features to capture cancer type and genetic alterations in two distinct supervised machine learning experiments. ('cancer', 'Disease', 'MESH:D009369', (54, 60)) ('tested', 'Reg', (3, 9)) ('cancer', 'Disease', (54, 60)) ('cancer', 'Phenotype', 'HP:0002664', (54, 60)) ('genetic alterations', 'Var', (70, 89)) 100913 32393369 However, predictive signal for mutations occurred at higher latent dimensionalities compared to cancer types (Fig. ('cancer', 'Phenotype', 'HP:0002664', (96, 102)) ('mutations', 'Var', (31, 40)) ('cancer', 'Disease', (96, 102)) ('cancer', 'Disease', 'MESH:D009369', (96, 102)) 100914 32393369 Compared to features trained within algorithm and within iteration, an ensemble of five VAE models and an ensemble of five models representing one iteration of each algorithm (PCA, ICA, NMF, DAE, and VAE) identified cancer type and mutation status in earlier dimensionalities compared to single model iterations (Fig. ('mutation', 'Var', (232, 240)) ('DAE', 'Chemical', '-', (191, 194)) ('cancer', 'Phenotype', 'HP:0002664', (216, 222)) ('cancer', 'Disease', (216, 222)) ('cancer', 'Disease', 'MESH:D009369', (216, 222)) 100916 32393369 Of all 30,850 compressed features in the model predicting TP53 alterations, only 317 were assigned non-zero weights (1.03%). ('TP53', 'Gene', (58, 62)) ('alterations', 'Var', (63, 74)) ('TP53', 'Gene', '7157', (58, 62)) 100971 32393369 In total, considering the 33 cancer types, 50 mutations, 28 latent dimensionalities, ensemble models, raw RNAseq features, real and permuted data, and 5 initializations per compression, we trained and evaluated 32,868 different supervised models. ('cancer', 'Disease', (29, 35)) ('cancer', 'Disease', 'MESH:D009369', (29, 35)) ('mutations', 'Var', (46, 55)) ('cancer', 'Phenotype', 'HP:0002664', (29, 35)) 100976 29204718 Nine pediatric patients (5:4, females:males; 14.6+-2.0 years) with an SDHx-related mutation (SDHB:SDHA:SDHD, n=7:1:1) were included in this retrospective study. ('patients', 'Species', '9606', (15, 23)) ('SDHB', 'Gene', (93, 97)) ('SDHx-related', 'Gene', (70, 82)) ('mutation', 'Var', (83, 91)) ('SDHx', 'Chemical', '-', (70, 74)) ('SDHD', 'Gene', '6392', (103, 107)) ('SDHB', 'Gene', '6390', (93, 97)) ('SDHD', 'Gene', (103, 107)) 100983 29204718 The per-lesion detection rate for 68Ga-DOTATATE PET/CT was significantly higher than that of 18F-FDG PET/CT (p=0.001) or CT/MR imaging (p<0.001). ('68Ga-DOTATATE', 'Chemical', '-', (34, 47)) ('18F-FDG', 'Chemical', 'MESH:D019788', (93, 100)) ('per-lesion detection', 'MPA', (4, 24)) ('68Ga-DOTATATE', 'Var', (34, 47)) ('higher', 'PosReg', (73, 79)) 100989 29204718 Mutations in gene-encoding subunits of succinate dehydrogenase (SDHx) or factors necessary for correct assembly of the SDH complex result in several familial PPGL syndromes. ('familial PPGL syndromes', 'Disease', (149, 172)) ('result in', 'Reg', (131, 140)) ('SDHx', 'Chemical', '-', (64, 68)) ('SDHx', 'Gene', (64, 68)) ('Mutations', 'Var', (0, 9)) 100990 29204718 Malignant transformation is more common in patients with SDHx and especially in those related to SDHB mutations compared with the other genetic mutations, resulting in higher mortality and morbidity rates due to more commonly occurring metastases. ('SDHB', 'Gene', (97, 101)) ('SDHx', 'Chemical', '-', (57, 61)) ('patients', 'Species', '9606', (43, 51)) ('more', 'PosReg', (212, 216)) ('metastases', 'Disease', (236, 246)) ('SDHx', 'Disease', (57, 61)) ('metastases', 'Disease', 'MESH:D009362', (236, 246)) ('higher', 'PosReg', (168, 174)) ('mutations', 'Var', (102, 111)) ('Malignant transformation', 'CPA', (0, 24)) ('SDHB', 'Gene', '6390', (97, 101)) 101008 29204718 There were 5 females and 4 males with a mean age of 14.6 +- 2.0 years, and all with SDHx-related mutations (SDHA, n=1; SDHB, n=7; SDHD, n=1) at genetic testing. ('mutations', 'Var', (97, 106)) ('SDHx', 'Chemical', '-', (84, 88)) ('SDHB', 'Gene', '6390', (119, 123)) ('SDHx-related', 'Gene', (84, 96)) ('SDHD', 'Gene', (130, 134)) ('SDHD', 'Gene', '6392', (130, 134)) ('SDHB', 'Gene', (119, 123)) 101060 29204718 Based on their intense 68Ga-DOTATATE lesion-uptake, two of our patients who had SDHB mutations and extensive metastasis (Table 1, patients 2 and 7) were treated with PRRT, receiving 90Y-DOTATOC and 177Lu-DOTATATE respectively. ('68Ga-DOTATATE', 'Chemical', '-', (23, 36)) ('90Y-DOTATOC', 'Chemical', 'MESH:C496730', (182, 193)) ('SDHB', 'Gene', (80, 84)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (198, 212)) ('patients', 'Species', '9606', (130, 138)) ('mutations', 'Var', (85, 94)) ('patients', 'Species', '9606', (63, 71)) ('SDHB', 'Gene', '6390', (80, 84)) 101072 29204718 This finding is in contrast to the results obtained in 17 adult patients with metastatic SDHB mutation where 68Ga-DOTATATE PET/CT detected 100% of abdominal PPGLs. ('68Ga-DOTATATE', 'Chemical', '-', (109, 122)) ('patients', 'Species', '9606', (64, 72)) ('mutation', 'Var', (94, 102)) ('PPGLs', 'Chemical', '-', (157, 162)) ('SDHB', 'Gene', '6390', (89, 93)) ('SDHB', 'Gene', (89, 93)) 101075 29204718 It is to be noted that the use of CT/MR imaging along with 68Ga-DOTATATE PET/CT further aid in the detection of 4 out of 5 missed abdominal lesions on 68Ga-DOTATATE PET/CT, resulting in the improved overall detection of 93.3% (14/15) of abdominal lesions. ('abdominal lesions', 'Disease', 'MESH:D015746', (130, 147)) ('aid', 'PosReg', (88, 91)) ('abdominal lesions', 'Disease', 'MESH:D015746', (237, 254)) ('68Ga-DOTATATE', 'Chemical', '-', (151, 164)) ('68Ga-DOTATATE', 'Chemical', '-', (59, 72)) ('abdominal lesions', 'Disease', (130, 147)) ('improved', 'PosReg', (190, 198)) ('abdominal lesions', 'Disease', (237, 254)) ('68Ga-DOTATATE PET/CT', 'Var', (151, 171)) 101083 29204718 In our pediatric cohort, the per-lesion detection rate of 18F-FDG PET/CT is 79.4 %, which is slightly lower than the previously reported rate of 85.8% obtained in a 17 patient-cohort of SDHB-related metastatic adult PPGLs patients. ('SDHB', 'Gene', (186, 190)) ('patient', 'Species', '9606', (222, 229)) ('patients', 'Species', '9606', (222, 230)) ('18F-FDG', 'Chemical', 'MESH:D019788', (58, 65)) ('patient', 'Species', '9606', (168, 175)) ('PPGLs', 'Chemical', '-', (216, 221)) ('18F-FDG', 'Var', (58, 65)) ('SDHB', 'Gene', '6390', (186, 190)) 101102 31020089 Procedure-related external factors, such as prescription of a beta blocker without the preventive administration of an alpha blocker, use of contrast medium, administration of anaesthetics, and emotional and pain-related stress, caused a hypertensive crisis with acute left ventricular dysfunction during ablation procedure. ('left ventricular dysfunction', 'Disease', (269, 297)) ('left ventricular dysfunction', 'Phenotype', 'HP:0005162', (269, 297)) ('left ventricular dysfunction', 'Disease', 'MESH:D018487', (269, 297)) ('pain', 'Phenotype', 'HP:0012531', (208, 212)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (238, 257)) ('hypertensive', 'Disease', 'MESH:D006973', (238, 250)) ('a beta', 'Gene', '351', (60, 66)) ('a beta', 'Gene', (60, 66)) ('hypertensive', 'Disease', (238, 250)) ('prescription', 'Var', (44, 56)) ('pain', 'Disease', 'MESH:D010146', (208, 212)) ('caused', 'Reg', (229, 235)) ('pain', 'Disease', (208, 212)) 101124 31020089 We speculated the presence of secondary hypertension, and her serum catecholamine levels measured 4 weeks after ablation were found to be clearly elevated [adrenalin 0.03 ng/mL (normal range = 0.00-0.10 ng/mL), noradrenalin 3.36 ng/mL (0.10-0.50 ng/mL), and dopamine <0.01 ng/mL (0.00-0.03 ng/mL)]. ('hypertension', 'Disease', (40, 52)) ('catecholamine', 'Chemical', 'MESH:D002395', (68, 81)) ('serum catecholamine levels', 'MPA', (62, 88)) ('dopamine', 'Chemical', 'MESH:D004298', (258, 266)) ('hypertension', 'Phenotype', 'HP:0000822', (40, 52)) ('secondary', 'Disease', (30, 39)) ('noradrenalin', 'MPA', (211, 223)) ('noradrenalin', 'Chemical', 'MESH:D009638', (211, 223)) ('hypertension', 'Disease', 'MESH:D006973', (40, 52)) ('dopamine', 'MPA', (258, 266)) ('adrenalin', 'MPA', (156, 165)) ('0.03', 'Var', (166, 170)) ('elevated', 'PosReg', (146, 154)) 101149 31020089 Particularly in patients with AF who are scheduled to undergo catheter ablation, under-diagnosis of pheochromocytoma can lead to a lethal hypertensive crisis due to periprocedural medications, imaging studies using contrast medium, anaesthesia, and emotional and pain-related stress. ('pheochromocytoma', 'Disease', 'MESH:D010673', (100, 116)) ('under-diagnosis', 'Var', (81, 96)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (100, 116)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (138, 157)) ('hypertensive', 'Disease', 'MESH:D006973', (138, 150)) ('AF', 'Phenotype', 'HP:0005110', (30, 32)) ('patients', 'Species', '9606', (16, 24)) ('hypertensive', 'Disease', (138, 150)) ('pain', 'Phenotype', 'HP:0012531', (263, 267)) ('pain', 'Disease', 'MESH:D010146', (263, 267)) ('pheochromocytoma', 'Disease', (100, 116)) ('pain', 'Disease', (263, 267)) ('lead to', 'Reg', (121, 128)) ('AF', 'Disease', 'MESH:D001281', (30, 32)) 101158 27007161 Although PCC/PGL malignancy rate varies with tumor site and the particular inherited mutation in familial diseases, it is difficult to predict malignancy in primary tumors. ('malignancy', 'Disease', 'MESH:D009369', (143, 153)) ('primary tumors', 'Disease', (157, 171)) ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('malignancy', 'Disease', (143, 153)) ('primary tumors', 'Disease', 'MESH:D009369', (157, 171)) ('malignancy', 'Disease', (17, 27)) ('tumor', 'Disease', (45, 50)) ('tumors', 'Phenotype', 'HP:0002664', (165, 171)) ('PCC/PGL malignancy', 'Disease', 'MESH:D010235', (9, 27)) ('mutation', 'Var', (85, 93)) ('familial diseases', 'Disease', (97, 114)) ('tumor', 'Disease', 'MESH:D009369', (165, 170)) ('PCC/PGL malignancy', 'Disease', (9, 27)) ('tumor', 'Phenotype', 'HP:0002664', (165, 170)) ('familial diseases', 'Disease', 'MESH:D030342', (97, 114)) ('tumor', 'Disease', 'MESH:D009369', (45, 50)) ('malignancy', 'Disease', 'MESH:D009369', (17, 27)) ('tumor', 'Disease', (165, 170)) 101165 27007161 Mutations of the succinate dehydrogenase subunit B gene (SDHB) were associated with high rates of malignancy and extra-adrenal tumor metastasis. ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('associated', 'Reg', (68, 78)) ('extra-adrenal tumor metastasis', 'Disease', 'MESH:D009362', (113, 143)) ('SDHB', 'Gene', '6390', (57, 61)) ('extra-adrenal tumor metastasis', 'Disease', (113, 143)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (57, 61)) ('malignancy', 'Disease', 'MESH:D009369', (98, 108)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (119, 132)) ('malignancy', 'Disease', (98, 108)) 101168 27007161 One study reported that progression to malignancy was strongly associated with deletions on chromosomes 6q and 17p. ('malignancy', 'Disease', 'MESH:D009369', (39, 49)) ('deletions on chromosomes', 'Var', (79, 103)) ('associated', 'Reg', (63, 73)) ('malignancy', 'Disease', (39, 49)) 101169 27007161 Another revealed that alterations of chromosome 11, especially loss of 11q22-23, were more frequent in malignant than benign tumors. ('benign tumors', 'Disease', 'MESH:D009369', (118, 131)) ('frequent', 'Reg', (91, 99)) ('loss', 'Var', (63, 67)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('tumors', 'Phenotype', 'HP:0002664', (125, 131)) ('alterations', 'Var', (22, 33)) ('benign tumors', 'Disease', (118, 131)) ('malignant', 'Disease', (103, 112)) ('11q22-23', 'Gene', (71, 79)) 101187 27007161 We did not observe any noteworthy focal amplifications or deletions via aCGH, and most samples showed few copy number aberrations regardless of malignancy status. ('deletions', 'Var', (58, 67)) ('malignancy status', 'Disease', 'MESH:D009369', (144, 161)) ('aCGH', 'Gene', (72, 76)) ('malignancy status', 'Disease', (144, 161)) 101188 27007161 This indicates that copy number alteration is unlikely to be involved in PCC/PGL carcinogenesis, and other factors such as somatic mutations and gene fusions should be investigated to find relevant driver alterations. ('PGL carcinogenesis', 'Disease', 'MESH:D010235', (77, 95)) ('PCC/PGL', 'Gene', '1421', (73, 80)) ('PGL carcinogenesis', 'Disease', (77, 95)) ('PCC/PGL', 'Gene', (73, 80)) ('copy number alteration', 'Var', (20, 42)) 101194 27007161 To better characterize the function of PNMT in PCC/PGL, we analyzed a large (125 samples) public PCC/PGL microarray expression profile dataset (GSE19987) with a variety of mutations in pheochromocytoma susceptibility genes such as RET, VHL, SDHB and SDHD. ('SDHB', 'Gene', (241, 245)) ('mutations', 'Var', (172, 181)) ('RET', 'Gene', (231, 234)) ('SDHB', 'Gene', '6390', (241, 245)) ('PCC/PGL', 'Gene', (47, 54)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (185, 201)) ('PCC/PGL', 'Gene', '1421', (97, 104)) ('SDHD', 'Gene', '6392', (250, 254)) ('SDHD', 'Gene', (250, 254)) ('pheochromocytoma', 'Disease', (185, 201)) ('RET', 'Gene', '5979', (231, 234)) ('PCC/PGL', 'Gene', '1421', (47, 54)) ('PCC/PGL', 'Gene', (97, 104)) ('VHL', 'Disease', (236, 239)) ('VHL', 'Disease', 'MESH:D006623', (236, 239)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (185, 201)) 101201 27007161 Hereditary tumors harboring RET mutations overexpressed PNMT, while those harboring either SDH or VHL mutations downregulated PNMT (Figure 4B). ('downregulated', 'NegReg', (112, 125)) ('SDH', 'Gene', (91, 94)) ('tumor', 'Phenotype', 'HP:0002664', (11, 16)) ('VHL', 'Disease', 'MESH:D006623', (98, 101)) ('overexpressed', 'PosReg', (42, 55)) ('VHL', 'Disease', (98, 101)) ('PNMT', 'MPA', (56, 60)) ('RET', 'Gene', '5979', (28, 31)) ('tumors', 'Phenotype', 'HP:0002664', (11, 17)) ('SDH', 'Gene', '6390', (91, 94)) ('mutations', 'Var', (32, 41)) ('Hereditary tumors', 'Disease', (0, 17)) ('RET', 'Gene', (28, 31)) ('Hereditary tumors', 'Disease', 'MESH:D009386', (0, 17)) ('PNMT', 'MPA', (126, 130)) 101203 27007161 The adrenergic/noradrenergic characteristics of PCC/PGL with RET, SDH, or VHL mutations largely reflect their origins from two types of chromaffin cells that can be distinguished based on PNMT expression. ('SDH', 'Gene', '6390', (66, 69)) ('PCC/PGL', 'Gene', '1421', (48, 55)) ('RET', 'Gene', (61, 64)) ('adrenergic/noradrenergic', 'MPA', (4, 28)) ('SDH', 'Gene', (66, 69)) ('mutations', 'Var', (78, 87)) ('PCC/PGL', 'Gene', (48, 55)) ('RET', 'Gene', '5979', (61, 64)) ('VHL', 'Disease', (74, 77)) ('VHL', 'Disease', 'MESH:D006623', (74, 77)) ('chromaffin', 'Chemical', '-', (136, 146)) 101209 27007161 We observed variable PNMT expression in normal adrenal gland tissues and benign and malignant PCC/PGL, ranging from 9.995-1610.673, 0.005-447.70 and 0.006-396.05, respectively, with median values of 48.3365, 8.55 and 3.44, respectively. ('PCC/PGL', 'Gene', '1421', (94, 101)) ('0.005-447.70', 'Var', (132, 144)) ('PCC/PGL', 'Gene', (94, 101)) 101226 27007161 We also performed functional analysis of genes that were differentially expressed in PNMT-high and -low expressing tumors. ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('PNMT-high', 'Var', (85, 94)) ('tumors', 'Disease', (115, 121)) ('tumors', 'Phenotype', 'HP:0002664', (115, 121)) ('tumors', 'Disease', 'MESH:D009369', (115, 121)) 101240 27007161 reported that high dopamine, high norepinephrine and a high ratio of epinephrine to total catecholamine are associated with decreased metastasis-free survival. ('high', 'Var', (29, 33)) ('high norepinephrine', 'Phenotype', 'HP:0003345', (29, 48)) ('metastasis-free survival', 'CPA', (134, 158)) ('epinephrine', 'Chemical', 'MESH:D004837', (37, 48)) ('norepinephrine', 'MPA', (34, 48)) ('norepinephrine', 'Chemical', 'MESH:D009638', (34, 48)) ('decreased', 'NegReg', (124, 133)) ('catecholamine', 'Chemical', 'MESH:D002395', (90, 103)) ('high', 'Var', (14, 18)) ('dopamine', 'Chemical', 'MESH:D004298', (19, 27)) ('epinephrine', 'Chemical', 'MESH:D004837', (69, 80)) 101463 25763296 In the first surgery the patient had a partial T5, complete T6, partial T7 laminectomy, and pedicle screw fixation of T4, T5, T7, and T8 with posterolateral fusion. ('partial T7', 'Var', (64, 74)) ('patient', 'Species', '9606', (25, 32)) ('partial T5', 'Var', (39, 49)) 101477 25763296 In our case, each presurgical embolization resulted in a reduced catecholamine secretion as evidenced by the subsequent reduction in the magnitude of the hypertensive response. ('catecholamine', 'Chemical', 'MESH:D002395', (65, 78)) ('hypertensive', 'Disease', (154, 166)) ('catecholamine secretion', 'MPA', (65, 88)) ('embolization', 'Var', (30, 42)) ('reduction', 'NegReg', (120, 129)) ('reduced catecholamine secretion', 'Phenotype', 'HP:0003334', (57, 88)) ('reduced', 'NegReg', (57, 64)) ('hypertensive', 'Disease', 'MESH:D006973', (154, 166)) 101574 24563652 A previous report indicates a possible novel strategy for treatment of Pheochromocytomas and paragangliomas showing that lithium determines a net reduction of the growth in culture of the rat Pheochromocytoma cell line PC12. ('Pheochromocytoma', 'Disease', 'MESH:D010673', (192, 208)) ('lithium', 'Var', (121, 128)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (192, 208)) ('lithium', 'Chemical', 'MESH:D008094', (121, 128)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (71, 87)) ('PC12', 'CellLine', 'CVCL:0481', (219, 223)) ('rat', 'Species', '10116', (47, 50)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (71, 88)) ('rat', 'Species', '10116', (188, 191)) ('paragangliomas', 'Phenotype', 'HP:0002668', (93, 107)) ('Pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (71, 107)) ('Pheochromocytoma', 'Disease', (71, 87)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (71, 87)) ('Pheochromocytoma', 'Disease', (192, 208)) ('growth', 'MPA', (163, 169)) ('reduction', 'NegReg', (146, 155)) 101578 24563652 At 0.5-1 mM it acts mainly as an inhibitor of inositol monophosphatase (IMPase) (Ki 0.8 mM) leading to free inositol depletion and activating autophagy. ('inositol', 'Chemical', 'MESH:D007294', (108, 116)) ('autophagy', 'CPA', (142, 151)) ('inositol', 'Chemical', 'MESH:D007294', (46, 54)) ('free inositol depletion', 'MPA', (103, 126)) ('activating', 'PosReg', (131, 141)) ('Ki 0.8', 'Var', (81, 87)) 101581 24563652 These ubiquitously expressed serine/threonine kinases modulate a large number of cellular functions and their activity is inhibited by the phosphorylation of serine-21 in GSK3alpha and serine-9 in GSK3beta. ('phosphorylation', 'MPA', (139, 154)) ('serine', 'Chemical', 'MESH:D012694', (158, 164)) ('GSK3alpha', 'Gene', '50686', (171, 180)) ('activity', 'MPA', (110, 118)) ('inhibited', 'NegReg', (122, 131)) ('modulate', 'Reg', (54, 62)) ('GSK3beta', 'Gene', (197, 205)) ('serine-9', 'Var', (185, 193)) ('serine', 'Chemical', 'MESH:D012694', (185, 191)) ('serine-21', 'Var', (158, 167)) ('GSK3alpha', 'Gene', (171, 180)) ('GSK3beta', 'Gene', '84027', (197, 205)) ('cellular functions', 'CPA', (81, 99)) ('serine', 'Chemical', 'MESH:D012694', (29, 35)) ('serine/threonine kinases', 'Enzyme', (29, 53)) 101583 24563652 Consistently with an activation of the autophagic pathway, 0.5 mM lithium induces the appearance of many autophagic vacuoles whereas the phosphorylation/inactivation of GSK3alpha/beta was observed only at a higher lithium concentration (2 mM). ('0.5', 'Var', (59, 62)) ('autophagic vacuoles', 'CPA', (105, 124)) ('GSK3alpha', 'Gene', (169, 178)) ('autophagic vacuoles', 'Phenotype', 'HP:0003736', (105, 124)) ('autophagic pathway', 'CPA', (39, 57)) ('rat', 'Species', '10116', (229, 232)) ('lithium', 'Chemical', 'MESH:D008094', (214, 221)) ('lithium', 'Chemical', 'MESH:D008094', (66, 73)) ('GSK3alpha', 'Gene', '50686', (169, 178)) 101624 24563652 In lithium-treated PC12 the fluorescence intensity of LC3B was more evident and the mean value of the maximal amplitude of fluorescence was significantly increased (approximately 50%) with respect to the control (Figure 4). ('lithium-treated', 'Var', (3, 18)) ('fluorescence intensity', 'MPA', (28, 50)) ('lithium', 'Chemical', 'MESH:D008094', (3, 10)) ('LC3B', 'Gene', (54, 58)) ('increased', 'PosReg', (154, 163)) ('PC12', 'CellLine', 'CVCL:0481', (19, 23)) ('maximal amplitude', 'MPA', (102, 119)) 101771 23627260 In terms of grade and cellular classification of these tumors, the NCI identifies four pathologic features associated with malignancy: large tumor size, increased number of mitosis, DNA aneuploidy, and extensive tumor necrosis. ('mitosis', 'Disease', (173, 180)) ('tumor', 'Disease', 'MESH:D009369', (141, 146)) ('tumor', 'Disease', 'MESH:D009369', (55, 60)) ('tumors', 'Phenotype', 'HP:0002664', (55, 61)) ('tumor', 'Phenotype', 'HP:0002664', (212, 217)) ('tumor necrosis', 'Disease', 'MESH:D009336', (212, 226)) ('aneuploidy', 'Var', (186, 196)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('mitosis', 'Disease', 'None', (173, 180)) ('tumor necrosis', 'Disease', (212, 226)) ('tumors', 'Disease', (55, 61)) ('malignancy', 'Disease', 'MESH:D009369', (123, 133)) ('increased', 'PosReg', (153, 162)) ('tumors', 'Disease', 'MESH:D009369', (55, 61)) ('tumor', 'Disease', (212, 217)) ('malignancy', 'Disease', (123, 133)) ('DNA', 'CPA', (182, 185)) ('tumor', 'Disease', (141, 146)) ('tumor', 'Disease', (55, 60)) ('tumor', 'Disease', 'MESH:D009369', (212, 217)) 101786 22716303 Approximately 10% of patients with a paraganglioma have a significant family history and one-third of cases are associated with germ line mutations in at least nine genes (NF1RETSDHASDHBSDHCSDHDTMEM127MAX and VHL). ('paraganglioma', 'Phenotype', 'HP:0002668', (37, 50)) ('VHL', 'Gene', (209, 212)) ('NF1RETSDHASDHBSDHCSDHDTMEM127MAX', 'Var', (172, 204)) ('patients', 'Species', '9606', (21, 29)) ('VHL', 'Gene', '7428', (209, 212)) ('a paraganglioma', 'Disease', 'MESH:D010235', (35, 50)) ('a paraganglioma', 'Disease', (35, 50)) ('associated', 'Reg', (112, 122)) ('mutations', 'Var', (138, 147)) 101821 22716303 However, metoclopramide worsens the symptoms of pseudo-obstruction owing to its catecholamine-stimulating effect, subsequently inducing a hypertension crisis. ('inducing', 'Reg', (127, 135)) ('hypertension crisis', 'Phenotype', 'HP:0100735', (138, 157)) ('catecholamine', 'Chemical', 'MESH:D002395', (80, 93)) ('metoclopramide', 'Chemical', 'MESH:D008787', (9, 23)) ('hypertension', 'Disease', 'MESH:D006973', (138, 150)) ('hypertension', 'Phenotype', 'HP:0000822', (138, 150)) ('hypertension', 'Disease', (138, 150)) ('worsens', 'NegReg', (24, 31)) ('metoclopramide', 'Var', (9, 23)) ('pseudo-obstruction', 'Disease', (48, 66)) ('catecholamine-stimulating effect', 'MPA', (80, 112)) ('symptoms', 'MPA', (36, 44)) 101866 22606522 Genetic testing revealed a germline point mutation in the mitochondrial complex II enzyme succinate dehydrogenase (SDH) gene, subunit B. ('SDH', 'Gene', (115, 118)) ('revealed', 'Reg', (16, 24)) ('SDH', 'Gene', '6390', (115, 118)) ('germline point mutation', 'Var', (27, 50)) 101878 22606522 While both B and D mutations increase the risk of malignant progression as compared to sporadic cases, SDHB-positive tumors are more aggressive, with nearly 70% eventually becoming metastatic. ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('tumors', 'Phenotype', 'HP:0002664', (117, 123)) ('SDHB-positive tumors', 'Disease', (103, 123)) ('SDHB-positive tumors', 'Disease', 'MESH:D009369', (103, 123)) ('mutations', 'Var', (19, 28)) ('metastatic', 'CPA', (181, 191)) ('malignant progression', 'CPA', (50, 71)) 101879 22606522 Not only is the presence of an SDHB mutation considered to be a risk factor for development of metastatic disease, but it may also predispose to presentation of disease at an extra-adrenal location as well as at a younger age. ('SDHB', 'Gene', (31, 35)) ('metastatic disease', 'Disease', (95, 113)) ('presence', 'Var', (16, 24)) ('SDHB', 'Gene', '6390', (31, 35)) ('predispose to', 'Reg', (131, 144)) ('mutation', 'Var', (36, 44)) 101881 22606522 In a recent cohort study, the majority of patients had metastases to the bones, and all patients with SDHB mutations had at least one metastatic lesion to the bones. ('metastases', 'Disease', (55, 65)) ('mutations', 'Var', (107, 116)) ('patients', 'Species', '9606', (88, 96)) ('SDHB', 'Gene', '6390', (102, 106)) ('metastases', 'Disease', 'MESH:D009362', (55, 65)) ('SDHB', 'Gene', (102, 106)) ('patients', 'Species', '9606', (42, 50)) 101882 22606522 Unbalanced chromosomal aberrations particularly in chromosome 11, 11p, and 1p are thought to be involved in childhood paragangliomas; aberrations in chromosome 11 are more common in malignant tumors. ('common', 'Reg', (172, 178)) ('tumor', 'Phenotype', 'HP:0002664', (192, 197)) ('tumors', 'Phenotype', 'HP:0002664', (192, 198)) ('malignant tumors', 'Disease', (182, 198)) ('involved', 'Reg', (96, 104)) ('chromosomal aberrations', 'Phenotype', 'HP:0040012', (11, 34)) ('malignant tumors', 'Disease', 'MESH:D018198', (182, 198)) ('paragangliomas', 'Disease', (118, 132)) ('paragangliomas', 'Disease', 'MESH:D010235', (118, 132)) ('aberrations', 'Var', (134, 145)) ('paraganglioma', 'Phenotype', 'HP:0002668', (118, 131)) ('paragangliomas', 'Phenotype', 'HP:0002668', (118, 132)) 101883 22606522 Patients and carriers of SDH mutations require long-term imaging surveillance of the neuroaxis, and routine surveillance for plasma catecholamine metabolites. ('SDH', 'Gene', (25, 28)) ('mutations', 'Var', (29, 38)) ('catecholamine', 'Chemical', 'MESH:D002395', (132, 145)) ('Patients', 'Species', '9606', (0, 8)) ('plasma catecholamine metabolites', 'MPA', (125, 157)) ('SDH', 'Gene', '6390', (25, 28)) 101894 22606522 Parental testing revealed an identical mutation in the patient's mother, who has not experienced any tumors to date. ('mutation', 'Var', (39, 47)) ('revealed', 'Reg', (17, 25)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('patient', 'Species', '9606', (55, 62)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('tumors', 'Disease', (101, 107)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) 101895 22606522 Three of the patient's siblings have been tested and 2 carry germline SDHB mutations and are currently undergoing tumor surveillance. ('SDHB', 'Gene', '6390', (70, 74)) ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('SDHB', 'Gene', (70, 74)) ('patient', 'Species', '9606', (13, 20)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('tumor', 'Disease', (114, 119)) ('mutations', 'Var', (75, 84)) 101932 32313378 Accordingly, dysregulation of ADH through excess norepinephrine secretion would cause polyuria and polydipsia, including enuresis. ('norepinephrine secretion', 'MPA', (49, 73)) ('enuresis', 'Disease', (121, 129)) ('ADH', 'Gene', '551', (30, 33)) ('polyuria', 'Disease', (86, 94)) ('ADH', 'Gene', (30, 33)) ('dysregulation', 'Var', (13, 26)) ('enuresis', 'Disease', 'MESH:D004775', (121, 129)) ('enuresis', 'Phenotype', 'HP:0000805', (121, 129)) ('polyuria', 'Disease', 'MESH:D011141', (86, 94)) ('excess norepinephrine', 'Phenotype', 'HP:0003345', (42, 63)) ('excess', 'PosReg', (42, 48)) ('polydipsia', 'Disease', 'MESH:D059606', (99, 109)) ('norepinephrine', 'Chemical', 'MESH:D009638', (49, 63)) ('cause', 'Reg', (80, 85)) ('polydipsia', 'Phenotype', 'HP:0001959', (99, 109)) ('polyuria', 'Phenotype', 'HP:0000103', (86, 94)) ('polydipsia', 'Disease', (99, 109)) 101972 31335714 3B), calretinin (-), PCK (-), EMA (-), and Ki-67 (positive rate <1%), and support cells presented with S-100 (Partial +) (Fig. ('S-100', 'Chemical', 'MESH:C020953', (103, 108)) ('calretinin', 'Gene', '794', (5, 15)) ('EMA', 'Chemical', 'MESH:C519317', (30, 33)) ('Ki-67', 'Chemical', 'MESH:D019394', (43, 48)) ('S-100 (Partial +', 'Var', (103, 119)) ('calretinin', 'Gene', (5, 15)) 101986 31335714 Our case is a malignant PCC owing to the presence of an extra-adrenal tumor, high secretion of catecholamine, larger size (20 x 12 x 7 cm), PASS = 8 and 1 local lymph node metastasis. ('malignant PCC', 'Disease', 'MESH:D010673', (14, 27)) ('PCC', 'Phenotype', 'HP:0002666', (24, 27)) ('malignant PCC', 'Disease', (14, 27)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('tumor', 'Disease', (70, 75)) ('PASS =', 'Var', (140, 146)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (62, 75)) ('catecholamine', 'Chemical', 'MESH:D002395', (95, 108)) ('extra-adrenal', 'Disease', (56, 69)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) ('secretion of catecholamine', 'MPA', (82, 108)) 102107 31053176 DNA methylation at an enhancer of the three prime repair exonuclease 2 gene (TREX2) is linked to gene expression and survival in laryngeal cancer Genetic aberrations in DNA repair genes are linked to cancer, but less is reported about epigenetic regulation of DNA repair and functional consequences. ('cancer', 'Disease', 'MESH:D009369', (139, 145)) ('expression', 'Species', '29278', (102, 112)) ('three prime repair exonuclease 2', 'Gene', (38, 70)) ('cancer', 'Phenotype', 'HP:0002664', (200, 206)) ('cancer', 'Phenotype', 'HP:0002664', (139, 145)) ('linked', 'Reg', (190, 196)) ('TREX2', 'Gene', '11219', (77, 82)) ('three prime repair exonuclease 2', 'Gene', '11219', (38, 70)) ('DNA repair', 'Gene', (169, 179)) ('aberrations', 'Var', (154, 165)) ('cancer', 'Disease', 'MESH:D009369', (200, 206)) ('TREX2', 'Gene', (77, 82)) ('laryngeal cancer', 'Phenotype', 'HP:0012118', (129, 145)) ('cancer', 'Disease', (200, 206)) ('cancer', 'Disease', (139, 145)) 102108 31053176 We investigated the intragenic methylation loss at the three prime repair exonuclease 2 (TREX2) locus in laryngeal (n = 256) and colorectal cancer cases (n = 95) and in pan-cancer data from The Cancer Genome Atlas (TCGA). ('colorectal cancer', 'Disease', (129, 146)) ('cancer', 'Disease', 'MESH:D009369', (173, 179)) ('Cancer', 'Phenotype', 'HP:0002664', (194, 200)) ('Cancer Genome Atlas', 'Disease', (194, 213)) ('cancer', 'Disease', (173, 179)) ('three prime repair exonuclease 2', 'Gene', (55, 87)) ('Cancer Genome Atlas', 'Disease', 'MESH:D009369', (194, 213)) ('cancer', 'Disease', (140, 146)) ('cancer', 'Disease', 'MESH:D009369', (140, 146)) ('three prime repair exonuclease 2', 'Gene', '11219', (55, 87)) ('colorectal cancer', 'Disease', 'MESH:D015179', (129, 146)) ('methylation', 'Var', (31, 42)) ('cancer', 'Phenotype', 'HP:0002664', (173, 179)) ('laryngeal', 'Disease', (105, 114)) ('loss', 'NegReg', (43, 47)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (129, 146)) ('cancer', 'Phenotype', 'HP:0002664', (140, 146)) ('TREX2', 'Gene', (89, 94)) 102109 31053176 Significant methylation loss at an intragenic site of TREX2 was a frequent trait in both patient cohorts (p = 0.016 and < 0.001, respectively) and in 15 out of 22 TCGA studies. ('patient', 'Species', '9606', (89, 96)) ('methylation', 'Var', (12, 23)) ('loss', 'NegReg', (24, 28)) ('TREX2', 'Gene', (54, 59)) 102110 31053176 Methylation loss correlated with immunohistochemically staining for TREX2 (p < 0.0001) in laryngeal tumors and improved overall survival of laryngeal cancer patients (p = 0.045). ('laryngeal cancer', 'Phenotype', 'HP:0012118', (140, 156)) ('cancer', 'Phenotype', 'HP:0002664', (150, 156)) ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('Methylation', 'Var', (0, 11)) ('improved', 'PosReg', (111, 119)) ('laryngeal tumors', 'Disease', (90, 106)) ('loss', 'NegReg', (12, 16)) ('patients', 'Species', '9606', (157, 165)) ('tumors', 'Phenotype', 'HP:0002664', (100, 106)) ('laryngeal cancer', 'Disease', 'MESH:D007822', (140, 156)) ('laryngeal tumors', 'Disease', 'MESH:D007822', (90, 106)) ('laryngeal tumors', 'Phenotype', 'HP:0012118', (90, 106)) ('overall survival', 'CPA', (120, 136)) ('laryngeal cancer', 'Disease', (140, 156)) ('TREX2', 'Gene', (68, 73)) 102116 31053176 Recent research has highlighted the importance of genetic variation in DNA repair and tumor suppressor genes for the response to genotoxic exposure and cancer risk, but genetic variants alone cannot fully explain the heterogeneous treatment and survival outcomes observed. ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('cancer', 'Disease', (152, 158)) ('cancer', 'Disease', 'MESH:D009369', (152, 158)) ('tumor', 'Disease', (86, 91)) ('genetic variation', 'Var', (50, 67)) ('cancer', 'Phenotype', 'HP:0002664', (152, 158)) ('DNA repair', 'Gene', (71, 81)) ('tumor', 'Disease', 'MESH:D009369', (86, 91)) 102118 31053176 Recently, we identified DNA methylation changes at promoter regions of DNA repair genes in HNSCC and other tumors using quantitative methylation analysis. ('DNA repair genes', 'Gene', (71, 87)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumors', 'Disease', (107, 113)) ('tumors', 'Phenotype', 'HP:0002664', (107, 113)) ('methylation changes', 'Var', (28, 47)) ('tumors', 'Disease', 'MESH:D009369', (107, 113)) ('HNSCC', 'Disease', (91, 96)) ('HNSCC', 'Phenotype', 'HP:0012288', (91, 96)) 102119 31053176 We here quantified DNA methylation at the DNA repair gene three prime repair exonuclease 2 (TREX2) in tumor tissue compared to adjacent normal tissue in an independent, population-based case-control study of laryngeal cancer patients from Germany. ('three prime repair exonuclease 2', 'Gene', (58, 90)) ('patients', 'Species', '9606', (225, 233)) ('methylation', 'Var', (23, 34)) ('laryngeal cancer', 'Disease', 'MESH:D007822', (208, 224)) ('three prime repair exonuclease 2', 'Gene', '11219', (58, 90)) ('tumor', 'Disease', 'MESH:D009369', (102, 107)) ('laryngeal cancer', 'Disease', (208, 224)) ('cancer', 'Phenotype', 'HP:0002664', (218, 224)) ('TREX2', 'Gene', (92, 97)) ('laryngeal cancer', 'Phenotype', 'HP:0012118', (208, 224)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('tumor', 'Disease', (102, 107)) 102121 31053176 We observed loss of DNA methylation at a TREX2 intragenic gene locus in laryngeal cancer, colorectal cancer, and further cancer studies from The Cancer Genome Atlas (TCGA). ('colorectal cancer', 'Disease', 'MESH:D015179', (90, 107)) ('cancer', 'Phenotype', 'HP:0002664', (121, 127)) ('cancer', 'Disease', (82, 88)) ('methylation', 'Var', (24, 35)) ('Cancer', 'Phenotype', 'HP:0002664', (145, 151)) ('colorectal cancer', 'Disease', (90, 107)) ('cancer', 'Disease', 'MESH:D009369', (101, 107)) ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('cancer', 'Disease', 'MESH:D009369', (121, 127)) ('TREX2 intragenic gene', 'Gene', (41, 62)) ('cancer', 'Disease', 'MESH:D009369', (82, 88)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (90, 107)) ('Cancer Genome Atlas', 'Disease', 'MESH:D009369', (145, 164)) ('laryngeal cancer', 'Disease', 'MESH:D007822', (72, 88)) ('cancer', 'Disease', (101, 107)) ('laryngeal cancer', 'Disease', (72, 88)) ('laryngeal cancer', 'Phenotype', 'HP:0012118', (72, 88)) ('Cancer Genome Atlas', 'Disease', (145, 164)) ('cancer', 'Phenotype', 'HP:0002664', (101, 107)) ('cancer', 'Disease', (121, 127)) 102123 31053176 Low TREX2 methylation correlated with prolonged overall survival in laryngeal and colorectal cancer. ('colorectal cancer', 'Disease', (82, 99)) ('overall survival', 'MPA', (48, 64)) ('prolonged', 'PosReg', (38, 47)) ('cancer', 'Phenotype', 'HP:0002664', (93, 99)) ('colorectal cancer', 'Disease', 'MESH:D015179', (82, 99)) ('methylation', 'Var', (10, 21)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (82, 99)) ('laryngeal', 'Disease', (68, 77)) ('Low', 'NegReg', (0, 3)) ('TREX2', 'Gene', (4, 9)) 102124 31053176 In summary, epigenetic deregulation of TREX2 expression was observed in multiple cancers. ('epigenetic deregulation', 'Var', (12, 35)) ('cancers', 'Phenotype', 'HP:0002664', (81, 88)) ('expression', 'Species', '29278', (45, 55)) ('observed', 'Reg', (60, 68)) ('cancers', 'Disease', (81, 88)) ('cancers', 'Disease', 'MESH:D009369', (81, 88)) ('TREX2', 'Gene', (39, 44)) ('cancer', 'Phenotype', 'HP:0002664', (81, 87)) 102136 31053176 In the HNSCC patient cohort (n = 528) from TCGA, DNA methylation loss was found strongest for probes cg09364317 and cg18879010 and to a minor extent for cg12869875 and cg07206019 while nearby regions largely retained their high degree of methylation. ('loss', 'NegReg', (65, 69)) ('cg18879010', 'Var', (116, 126)) ('HNSCC', 'Phenotype', 'HP:0012288', (7, 12)) ('cg09364317', 'Var', (101, 111)) ('patient', 'Species', '9606', (13, 20)) ('cg07206019', 'Var', (168, 178)) ('methylation', 'MPA', (238, 249)) ('methylation', 'MPA', (53, 64)) ('cg12869875', 'Var', (153, 163)) 102137 31053176 The differentially methylated region (DMR) covered by probes cg09364317 and cg18879010 was scrutinized in the further TCGA cancer studies (Fig. ('cancer', 'Phenotype', 'HP:0002664', (123, 129)) ('DMR', 'Chemical', '-', (38, 41)) ('cg09364317', 'Var', (61, 71)) ('cancer', 'Disease', 'MESH:D009369', (123, 129)) ('cg18879010', 'Var', (76, 86)) ('cancer', 'Disease', (123, 129)) 102142 31053176 Overall, this pan-cancer analysis suggests methylation loss at the TREX2 locus as a frequent event in cancer. ('cancer', 'Phenotype', 'HP:0002664', (102, 108)) ('cancer', 'Phenotype', 'HP:0002664', (18, 24)) ('cancer', 'Disease', (102, 108)) ('cancer', 'Disease', 'MESH:D009369', (102, 108)) ('TREX2', 'Gene', (67, 72)) ('cancer', 'Disease', (18, 24)) ('cancer', 'Disease', 'MESH:D009369', (18, 24)) ('methylation loss', 'Var', (43, 59)) 102143 31053176 Methylation decrease at the TREX2 DMR in tumor tissue should be associated with an increase in gene expression. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('DMR', 'Chemical', '-', (34, 37)) ('increase', 'PosReg', (83, 91)) ('gene expression', 'MPA', (95, 110)) ('Methylation', 'MPA', (0, 11)) ('tumor', 'Disease', (41, 46)) ('expression', 'Species', '29278', (100, 110)) ('DMR', 'Var', (34, 37)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) ('decrease', 'NegReg', (12, 20)) 102145 31053176 A significant inverse correlation between TREX2 DMR methylation and TREX2 mRNA expression was found, mainly for the cg09364317 probe and TREX2 mRNA expression (R = - 0.143, p = 0.001; Additional file 1: Figure S2). ('expression', 'Species', '29278', (79, 89)) ('cg09364317', 'Var', (116, 126)) ('DMR', 'Chemical', '-', (48, 51)) ('TREX2', 'MPA', (137, 142)) ('expression', 'Species', '29278', (148, 158)) ('inverse', 'NegReg', (14, 21)) 102151 31053176 3d), and tumor samples with high H-scores showed significantly (p = 0.02) lower methylation of the TREX2 DMR (Fig. ('tumor', 'Disease', 'MESH:D009369', (9, 14)) ('methylation', 'MPA', (80, 91)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('tumor', 'Disease', (9, 14)) ('DMR', 'Chemical', '-', (105, 108)) ('high', 'Var', (28, 32)) ('lower', 'NegReg', (74, 79)) ('TREX2', 'Gene', (99, 104)) 102155 31053176 Next, we validated the association of TREX2 methylation status and survival in TCGA patient cohorts. ('association', 'Interaction', (23, 34)) ('methylation', 'Var', (44, 55)) ('TCGA', 'Disease', (79, 83)) ('patient', 'Species', '9606', (84, 91)) 102156 31053176 In the TCGA laryngeal cancer cases, an adjusted HR value of 0.106 (95% Cl = 0.017-0.686) was found for the probe cg09364317, supporting the results of the German laryngeal cancer study (Table 2). ('cancer', 'Phenotype', 'HP:0002664', (172, 178)) ('laryngeal cancer', 'Disease', (162, 178)) ('laryngeal cancer', 'Disease', (12, 28)) ('laryngeal cancer', 'Phenotype', 'HP:0012118', (162, 178)) ('laryngeal cancer', 'Phenotype', 'HP:0012118', (12, 28)) ('cg09364317', 'Var', (113, 123)) ('cancer', 'Phenotype', 'HP:0002664', (22, 28)) ('laryngeal cancer', 'Disease', 'MESH:D007822', (162, 178)) ('laryngeal cancer', 'Disease', 'MESH:D007822', (12, 28)) 102159 31053176 In summary, survival benefits in laryngeal and colon cancer patients linked to TREX2 DMR methylation loss imply a functional role of this region in tumorigenesis. ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('tumor', 'Disease', 'MESH:D009369', (148, 153)) ('colon cancer', 'Phenotype', 'HP:0003003', (47, 59)) ('loss', 'NegReg', (101, 105)) ('laryngeal', 'Disease', (33, 42)) ('patients', 'Species', '9606', (60, 68)) ('tumor', 'Disease', (148, 153)) ('methylation', 'Var', (89, 100)) ('colon cancer', 'Disease', 'MESH:D015179', (47, 59)) ('survival', 'CPA', (12, 20)) ('cancer', 'Phenotype', 'HP:0002664', (53, 59)) ('DMR methylation', 'Var', (85, 100)) ('DMR', 'Chemical', '-', (85, 88)) ('benefits', 'PosReg', (21, 29)) ('colon cancer', 'Disease', (47, 59)) ('TREX2', 'Gene', (79, 84)) 102172 31053176 In addition, the TREX2 DMR acted in an orientation-independent manner, a feature of gene enhancers (Fig. ('DMR', 'Var', (23, 26)) ('TREX2', 'Gene', (17, 22)) ('DMR', 'Chemical', '-', (23, 26)) 102173 31053176 In vitro CpG methylation of the luciferase reporters blocked the TREX2 DMR activity (Fig. ('blocked', 'NegReg', (53, 60)) ('luciferase', 'Enzyme', (32, 42)) ('methylation', 'Var', (13, 24)) ('DMR', 'Chemical', '-', (71, 74)) ('TREX2', 'Enzyme', (65, 70)) 102176 31053176 Taken together, these data suggest enhancer function for the TREX2 DMR. ('DMR', 'Var', (67, 70)) ('DMR', 'Chemical', '-', (67, 70)) ('TREX2', 'Gene', (61, 66)) ('enhancer', 'PosReg', (35, 43)) 102183 31053176 The TREX2 promoter, which also contains two conserved CEBPA binding sites, was also induced, and its activity was enhanced further by the addition of the TREX2 DMR in several of the tested cell lines. ('DMR', 'Var', (160, 163)) ('CEBPA', 'Gene', (54, 59)) ('activity', 'MPA', (101, 109)) ('CEBPA', 'Gene', '1050', (54, 59)) ('DMR', 'Chemical', '-', (160, 163)) ('enhanced', 'PosReg', (114, 122)) ('TREX2 promoter', 'Gene', (4, 18)) ('induced', 'PosReg', (84, 91)) ('TREX2', 'Gene', (154, 159)) 102184 31053176 Mutating the predicted consensus CEBPA recognition sites reduced the CEBPA-induced TREX2 enhancer (Fig. ('Mutating', 'Var', (0, 8)) ('CEBPA', 'Gene', (33, 38)) ('CEBPA', 'Gene', '1050', (33, 38)) ('reduced', 'NegReg', (57, 64)) ('CEBPA', 'Gene', (69, 74)) ('CEBPA', 'Gene', '1050', (69, 74)) 102186 31053176 In cell lines with high CEBPA mRNA expression (HNO206 and DLD1), siRNA-mediated CEBPA knockdown significantly reduced TREX2 DMR and promoter signals (Fig. ('CEBPA', 'Gene', (80, 85)) ('knockdown', 'Var', (86, 95)) ('DMR', 'Chemical', '-', (124, 127)) ('CEBPA', 'Gene', '1050', (80, 85)) ('promoter signals', 'MPA', (132, 148)) ('reduced', 'NegReg', (110, 117)) ('expression', 'Species', '29278', (35, 45)) ('TREX2 DMR', 'MPA', (118, 127)) ('CEBPA', 'Gene', (24, 29)) ('CEBPA', 'Gene', '1050', (24, 29)) 102190 31053176 Using tumors and adjacent normal tissues from laryngeal cancer patients, we found DNA methylation loss at the TREX2 locus for a substantial number of tumors which confirms the recently reported aberrant methylation in HNSCC. ('tumors', 'Disease', (150, 156)) ('tumors', 'Disease', 'MESH:D009369', (150, 156)) ('tumors', 'Phenotype', 'HP:0002664', (150, 156)) ('laryngeal cancer', 'Disease', 'MESH:D007822', (46, 62)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('TREX2', 'Gene', (110, 115)) ('laryngeal cancer', 'Disease', (46, 62)) ('cancer', 'Phenotype', 'HP:0002664', (56, 62)) ('HNSCC', 'Phenotype', 'HP:0012288', (218, 223)) ('tumors', 'Disease', (6, 12)) ('methylation', 'Var', (86, 97)) ('tumors', 'Disease', 'MESH:D009369', (6, 12)) ('loss', 'NegReg', (98, 102)) ('tumor', 'Phenotype', 'HP:0002664', (150, 155)) ('laryngeal cancer', 'Phenotype', 'HP:0012118', (46, 62)) ('patients', 'Species', '9606', (63, 71)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) 102192 31053176 TREX2 DMR methylation was associated with altered protein and mRNA expression and improved survival in patients with laryngeal cancer from Germany and TCGA, suggesting a role of TREX2 methylation in cancer etiology. ('protein', 'MPA', (50, 57)) ('altered', 'Reg', (42, 49)) ('laryngeal cancer', 'Disease', (117, 133)) ('laryngeal cancer', 'Phenotype', 'HP:0012118', (117, 133)) ('cancer', 'Disease', (199, 205)) ('TREX2', 'Gene', (0, 5)) ('DMR', 'Chemical', '-', (6, 9)) ('cancer', 'Phenotype', 'HP:0002664', (199, 205)) ('expression', 'Species', '29278', (67, 77)) ('cancer', 'Disease', (127, 133)) ('DMR methylation', 'Var', (6, 21)) ('survival', 'CPA', (91, 99)) ('cancer', 'Phenotype', 'HP:0002664', (127, 133)) ('cancer', 'Disease', 'MESH:D009369', (199, 205)) ('mRNA expression', 'MPA', (62, 77)) ('cancer', 'Disease', 'MESH:D009369', (127, 133)) ('patients', 'Species', '9606', (103, 111)) ('laryngeal cancer', 'Disease', 'MESH:D007822', (117, 133)) ('improved', 'PosReg', (82, 90)) 102194 31053176 In cancers, recent data have indicated heterogeneous TREX2 levels caused by aberrant regulation. ('heterogeneous', 'MPA', (39, 52)) ('TREX2 levels', 'MPA', (53, 65)) ('aberrant regulation', 'Var', (76, 95)) ('cancers', 'Phenotype', 'HP:0002664', (3, 10)) ('cancers', 'Disease', (3, 10)) ('cancers', 'Disease', 'MESH:D009369', (3, 10)) ('cancer', 'Phenotype', 'HP:0002664', (3, 9)) 102195 31053176 Rare genetic inactivation of TREX2 has been reported in CRC, suggesting that TREX2 has a tumor suppressive function. ('genetic inactivation', 'Var', (5, 25)) ('CRC', 'Disease', (56, 59)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) ('TREX2', 'Gene', (29, 34)) ('CRC', 'Phenotype', 'HP:0003003', (56, 59)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('tumor', 'Disease', (89, 94)) 102196 31053176 In HNSCC and UV-exposed skin, TREX2 levels were shown to vary considerably, with high TREX2 being associated with enhanced UV protection and lower skin cancer risk. ('HNSCC', 'Phenotype', 'HP:0012288', (3, 8)) ('skin cancer', 'Phenotype', 'HP:0008069', (147, 158)) ('high TREX2', 'Var', (81, 91)) ('TREX2', 'Var', (86, 91)) ('skin cancer', 'Disease', (147, 158)) ('UV protection', 'CPA', (123, 136)) ('enhanced', 'PosReg', (114, 122)) ('lower', 'NegReg', (141, 146)) ('skin cancer', 'Disease', 'MESH:D012878', (147, 158)) ('cancer', 'Phenotype', 'HP:0002664', (152, 158)) 102197 31053176 Our data support literature data on the role of TREX2 in carcinogenesis as tumor patients with high TREX2 expression show improved overall survival in our analysis. ('carcinogenesis', 'Disease', 'MESH:D063646', (57, 71)) ('expression', 'Species', '29278', (106, 116)) ('TREX2', 'Gene', (100, 105)) ('carcinogenesis', 'Disease', (57, 71)) ('high', 'Var', (95, 99)) ('patients', 'Species', '9606', (81, 89)) ('overall', 'MPA', (131, 138)) ('tumor', 'Disease', 'MESH:D009369', (75, 80)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('tumor', 'Disease', (75, 80)) ('improved', 'PosReg', (122, 130)) 102199 31053176 There is additional evidence for the beneficial role of high TREX2 expression in tumors. ('tumors', 'Disease', (81, 87)) ('tumors', 'Disease', 'MESH:D009369', (81, 87)) ('beneficial', 'PosReg', (37, 47)) ('expression', 'Species', '29278', (67, 77)) ('TREX2', 'Gene', (61, 66)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('expression', 'MPA', (67, 77)) ('tumors', 'Phenotype', 'HP:0002664', (81, 87)) ('high', 'Var', (56, 60)) 102210 31053176 We suggest that the association which we see between methylation loss and increased TREX2 expression could be responsible for beneficial downstream events like improved immune response and the survival benefit observed in a subgroup of laryngeal cancer patients. ('loss', 'NegReg', (65, 69)) ('survival benefit', 'CPA', (193, 209)) ('patients', 'Species', '9606', (253, 261)) ('expression', 'Species', '29278', (90, 100)) ('laryngeal cancer', 'Disease', 'MESH:D007822', (236, 252)) ('TREX2', 'Gene', (84, 89)) ('increased', 'PosReg', (74, 83)) ('expression', 'MPA', (90, 100)) ('cancer', 'Phenotype', 'HP:0002664', (246, 252)) ('laryngeal cancer', 'Phenotype', 'HP:0012118', (236, 252)) ('improved', 'PosReg', (160, 168)) ('laryngeal cancer', 'Disease', (236, 252)) ('immune response', 'CPA', (169, 184)) ('methylation', 'Var', (53, 64)) 102214 31053176 High TREX2 expression might render cells uniquely dependent on canonical end joining, especially in the absence of ATM, and thus might open new possibilities for treatments based on synthetic lethality effects. ('ATM', 'Gene', (115, 118)) ('expression', 'Species', '29278', (11, 21)) ('High', 'Var', (0, 4)) ('open', 'Reg', (135, 139)) ('ATM', 'Gene', '472', (115, 118)) ('canonical end joining', 'MPA', (63, 84)) ('TREX2', 'Gene', (5, 10)) ('dependent', 'Reg', (50, 59)) 102215 31053176 This is supported by our molecular analysis which revealed that the TREX2 locus affected by methylation loss has gene enhancer activity and likely drives gene expression of TREX2 in cis by serving as a transcription factor binding site for CEBPA and possibly other factors. ('loss', 'NegReg', (104, 108)) ('methylation', 'Var', (92, 103)) ('enhancer', 'PosReg', (118, 126)) ('expression', 'Species', '29278', (159, 169)) ('drives', 'PosReg', (147, 153)) ('expression', 'MPA', (159, 169)) ('CEBPA', 'Gene', (240, 245)) ('CEBPA', 'Gene', '1050', (240, 245)) ('TREX2', 'Gene', (68, 73)) 102221 31053176 Thus, we conclude that TREX2 DNA methylation might be useful as a biomarker to understand carcinogenesis in stratified epithelia and as a possible predictor of treatment response. ('methylation', 'Var', (33, 44)) ('TREX2', 'Gene', (23, 28)) ('epithelia', 'Disease', 'None', (119, 128)) ('carcinogenesis', 'Disease', 'MESH:D063646', (90, 104)) ('epithelia', 'Disease', (119, 128)) ('carcinogenesis', 'Disease', (90, 104)) 102222 31053176 In particular, tumors with high TREX2 expression might be less aggressive or respond better to specific therapies exploiting DNA damage response pathways. ('tumors', 'Disease', (15, 21)) ('expression', 'Species', '29278', (38, 48)) ('tumors', 'Phenotype', 'HP:0002664', (15, 21)) ('expression', 'MPA', (38, 48)) ('aggressive', 'CPA', (63, 73)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('tumors', 'Disease', 'MESH:D009369', (15, 21)) ('high', 'Var', (27, 31)) ('TREX2', 'Gene', (32, 37)) ('less', 'NegReg', (58, 62)) 102282 28965289 In recent years, it has become increasingly apparent that a number of these tumours arise as a result of germline genetic mutations and are inherited in an autosomal dominant pattern. ('tumours', 'Disease', 'MESH:D009369', (76, 83)) ('result', 'Reg', (95, 101)) ('tumours', 'Disease', (76, 83)) ('tumour', 'Phenotype', 'HP:0002664', (76, 82)) ('germline', 'Var', (105, 113)) ('tumours', 'Phenotype', 'HP:0002664', (76, 83)) ('arise', 'Reg', (84, 89)) 102313 28965289 MEN1 occurs due to mutations of the tumour suppressor MEN1 gene. ('tumour', 'Disease', 'MESH:D009369', (36, 42)) ('MEN1', 'Gene', '4221', (0, 4)) ('occurs due to', 'Reg', (5, 18)) ('tumour', 'Disease', (36, 42)) ('mutations', 'Var', (19, 28)) ('MEN1', 'Gene', (54, 58)) ('tumour', 'Phenotype', 'HP:0002664', (36, 42)) ('MEN1', 'Gene', '4221', (54, 58)) ('MEN1', 'Gene', (0, 4)) 102315 28965289 The majority of cases are associated with a truncated form of or absent menin protein. ('truncated', 'Var', (44, 53)) ('absent', 'NegReg', (65, 71)) ('menin', 'Gene', (72, 77)) ('menin', 'Gene', '4221', (72, 77)) ('associated', 'Reg', (26, 36)) 102320 28965289 Von Hippel Lindau syndrome (VHL) is an autosomal dominant condition, associated with mutations of the VHL gene. ('VHL', 'Disease', (102, 105)) ('VHL', 'Disease', 'MESH:D006623', (102, 105)) ('associated', 'Reg', (69, 79)) ('VHL', 'Disease', 'MESH:D006623', (28, 31)) ('Von Hippel Lindau syndrome', 'Disease', 'MESH:D006623', (0, 26)) ('Von Hippel Lindau syndrome', 'Disease', (0, 26)) ('mutations', 'Var', (85, 94)) ('VHL', 'Disease', (28, 31)) 102326 28965289 NF1 is caused by a mutation in the tumour suppressor gene NF1, which is localised on the long arm of chromosome 17. ('NF1', 'Gene', '4763', (58, 61)) ('mutation', 'Var', (19, 27)) ('tumour', 'Phenotype', 'HP:0002664', (35, 41)) ('tumour', 'Disease', 'MESH:D009369', (35, 41)) ('NF1', 'Gene', (58, 61)) ('NF1', 'Gene', (0, 3)) ('caused by', 'Reg', (7, 16)) ('NF1', 'Gene', '4763', (0, 3)) ('tumour', 'Disease', (35, 41)) 102327 28965289 Tuberous Sclerosis is an autosomal dominant condition, which is caused by mutations of TSC1 and TSC 2 which encode for hamartin and tuberin proteins respectively. ('hamartin', 'Gene', '7248', (119, 127)) ('hamartin', 'Gene', (119, 127)) ('Tuberous Sclerosis', 'Disease', (0, 18)) ('TSC 2', 'Gene', (96, 101)) ('tuberin', 'Gene', (132, 139)) ('mutations', 'Var', (74, 83)) ('caused by', 'Reg', (64, 73)) ('Tuberous Sclerosis', 'Disease', 'MESH:D014402', (0, 18)) ('TSC 2', 'Gene', '7249', (96, 101)) ('TSC1', 'Gene', '7248', (87, 91)) ('tuberin', 'Gene', '7249', (132, 139)) ('TSC1', 'Gene', (87, 91)) 102350 28965289 Tumours which secrete vasoactive intestinal peptide are associated with severe diarrhoea and electrolyte disturbances. ('diarrhoea', 'Disease', (79, 88)) ('electrolyte disturbances', 'Disease', (93, 117)) ('electrolyte disturbances', 'Phenotype', 'HP:0003111', (93, 117)) ('Tumours', 'Var', (0, 7)) ('associated', 'Reg', (56, 66)) ('diarrhoea', 'Disease', 'MESH:D003967', (79, 88)) ('secrete vasoactive intestinal peptide', 'MPA', (14, 51)) ('diarrhoea', 'Phenotype', 'HP:0002014', (79, 88)) ('Tumours', 'Phenotype', 'HP:0002664', (0, 7)) ('severe diarrhoea', 'Phenotype', 'HP:0002028', (72, 88)) 102403 28965289 More recently somatostatinomas have been reported in a small group of female patients with polycythaemia and paraganglioma; a somatic gain-of-function mutation in HIF2A was found in these patients. ('HIF2A', 'Gene', (163, 168)) ('somatostatinomas', 'Disease', (14, 30)) ('mutation', 'Var', (151, 159)) ('gain-of-function', 'PosReg', (134, 150)) ('patients', 'Species', '9606', (188, 196)) ('polycythaemia and paraganglioma', 'Disease', 'MESH:D010235', (91, 122)) ('patients', 'Species', '9606', (77, 85)) ('HIF2A', 'Gene', '2034', (163, 168)) ('somatostatinomas', 'Disease', 'MESH:D013005', (14, 30)) ('paraganglioma', 'Phenotype', 'HP:0002668', (109, 122)) 102405 28965289 A case of polycythaemia and paraganglioma has been reported in a male adolescent patient with the same mutation, but had no evidence of somatostatinoma at the time of reporting. ('polycythaemia and paraganglioma', 'Disease', 'MESH:D010235', (10, 41)) ('patient', 'Species', '9606', (81, 88)) ('paraganglioma', 'Phenotype', 'HP:0002668', (28, 41)) ('somatostatinoma', 'Disease', 'MESH:D013005', (136, 151)) ('somatostatinoma', 'Disease', (136, 151)) ('mutation', 'Var', (103, 111)) 102406 28965289 Neuroendocrine tumours of the small bowel are rarely associated with familial syndromes, however a detailed family history remains important as a small number may be associated with a mutation in inositol polyphosphate multikinase. ('Neuroendocrine tumours of the small bowel', 'Disease', 'MESH:D018358', (0, 41)) ('Neuroendocrine tumours of the small bowel', 'Disease', (0, 41)) ('tumour', 'Phenotype', 'HP:0002664', (15, 21)) ('associated', 'Reg', (166, 176)) ('mutation', 'Var', (184, 192)) ('inositol polyphosphate multikinase', 'Gene', (196, 230)) ('endocrine tumour', 'Phenotype', 'HP:0100568', (5, 21)) ('tumours', 'Phenotype', 'HP:0002664', (15, 22)) ('inositol polyphosphate multikinase', 'Gene', '253430', (196, 230)) 102430 28965289 Mutations in the succinate dehydrogenase genes (SDHA, SDHB, SDHC, SDHD, SDHAF2), which encode the mitochondrial enzyme succinate dehydrogenase which catalyses the oxidation of succinate to fumurate, and which is a key component of the Krebs cycle, are also associated with hereditary phaeochromocytoma/paraganglioma syndromes. ('SDH', 'Gene', (60, 63)) ('succinate', 'Chemical', 'MESH:D019802', (176, 185)) ('SDHB', 'Gene', '6390', (54, 58)) ('SDH', 'Gene', (66, 69)) ('hereditary phaeochromocytoma', 'Phenotype', 'HP:0002666', (273, 301)) ('paraganglioma', 'Phenotype', 'HP:0002668', (302, 315)) ('SDHC', 'Gene', (60, 64)) ('succinate', 'Chemical', 'MESH:D019802', (17, 26)) ('SDHD', 'Gene', (66, 70)) ('SDH', 'Gene', '6390', (48, 51)) ('SDHAF2', 'Gene', (72, 78)) ('hereditary phaeochromocytoma/paraganglioma syndromes', 'Disease', 'MESH:D010235', (273, 325)) ('SDH', 'Gene', '6390', (72, 75)) ('SDHAF2', 'Gene', '54949', (72, 78)) ('SDHB', 'Gene', (54, 58)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', '6390', (54, 57)) ('succinate', 'Chemical', 'MESH:D019802', (119, 128)) ('fumurate', 'Chemical', '-', (189, 197)) ('SDH', 'Gene', (48, 51)) ('SDH', 'Gene', (72, 75)) ('SDH', 'Gene', '6390', (60, 63)) ('SDH', 'Gene', (54, 57)) ('SDH', 'Gene', '6390', (66, 69)) ('SDHC', 'Gene', '6391', (60, 64)) ('associated', 'Reg', (257, 267)) ('Krebs', 'Chemical', '-', (235, 240)) ('SDHD', 'Gene', '6392', (66, 70)) 102431 28965289 As could be predicted inactivating mutations in fumarate hydratase produce a similar clinical spectrum of phaeochromocytoma/paraganglioma to that seen in SDH inactivation. ('SDH', 'Gene', (154, 157)) ('phaeochromocytoma/paraganglioma', 'Disease', (106, 137)) ('phaeochromocytoma/paraganglioma', 'Disease', 'MESH:D010235', (106, 137)) ('paraganglioma', 'Phenotype', 'HP:0002668', (124, 137)) ('fumarate', 'Enzyme', (48, 56)) ('SDH', 'Gene', '6390', (154, 157)) ('inactivating mutations', 'Var', (22, 44)) 102432 28965289 More recently mutations in the MYC-associated factor X gene (MAX), Endothelial pas domain protein 1/Hypoxia inducible factor type 2A (EPAS1/HIF2A) and TMEM127 have been found to be responsible for some cases of adrenal phaeochromocytoma and extra-adrenal thoracolumbar paraganglioma (~1.1% all cases). ('HIF2A', 'Gene', '2034', (140, 145)) ('paraganglioma', 'Disease', 'MESH:D010235', (269, 282)) ('MYC-associated factor X', 'Gene', (31, 54)) ('HIF2A', 'Gene', (140, 145)) ('responsible', 'Reg', (181, 192)) ('TMEM127', 'Gene', (151, 158)) ('EPAS1', 'Gene', '2034', (134, 139)) ('MYC-associated factor X', 'Gene', '4149', (31, 54)) ('paraganglioma', 'Phenotype', 'HP:0002668', (269, 282)) ('mutations', 'Var', (14, 23)) ('adrenal phaeochromocytoma', 'Disease', (211, 236)) ('TMEM127', 'Gene', '55654', (151, 158)) ('adrenal phaeochromocytoma', 'Disease', 'MESH:D000312', (211, 236)) ('Endothelial pas domain protein 1', 'Gene', (67, 99)) ('adrenal phaeochromocytoma', 'Phenotype', 'HP:0006748', (211, 236)) ('Hypoxia', 'Disease', 'MESH:D000860', (100, 107)) ('EPAS1', 'Gene', (134, 139)) ('Hypoxia', 'Disease', (100, 107)) ('Endothelial pas domain protein 1', 'Gene', '2034', (67, 99)) ('paraganglioma', 'Disease', (269, 282)) 102433 28965289 HIF2A somatic mutations have been reported in patients with PPGL and polycythaemia; the exact mode of inheritance is unknown but it is likely to be a germline mosaic mutation. ('HIF2A', 'Gene', '2034', (0, 5)) ('patients', 'Species', '9606', (46, 54)) ('reported', 'Reg', (34, 42)) ('HIF2A', 'Gene', (0, 5)) ('mutations', 'Var', (14, 23)) ('polycythaemia', 'Disease', (69, 82)) ('PPGL', 'Disease', (60, 64)) 102435 28965289 However with the advent of next generation screening, the gene panel approach is becoming increasingly cost effective and provides rapid results, with a recent study identifying driver mutations in 80% of PPGL tumours, although the clinical significance of every mutation is not yet known. ('PPGL tumours', 'Disease', 'MESH:D009369', (205, 217)) ('tumour', 'Phenotype', 'HP:0002664', (210, 216)) ('tumours', 'Phenotype', 'HP:0002664', (210, 217)) ('mutations', 'Var', (185, 194)) ('PPGL tumours', 'Disease', (205, 217)) 102437 28965289 Mutations in a large number of genes are associated with adrenal phaeochromocytoma (RET, VHL, NF1, SDHA, SDHB, SDHC, SDHD, MAX, TMEM127), and most sporadic PPGLs arise in the adrenal glands. ('NF1', 'Gene', '4763', (94, 97)) ('RET', 'Gene', (84, 87)) ('associated', 'Reg', (41, 51)) ('SDH', 'Gene', (99, 102)) ('PPGLs', 'Chemical', '-', (156, 161)) ('adrenal phaeochromocytoma', 'Disease', (57, 82)) ('TMEM127', 'Gene', (128, 135)) ('NF1', 'Gene', (94, 97)) ('adrenal phaeochromocytoma', 'Phenotype', 'HP:0006748', (57, 82)) ('SDH', 'Gene', (105, 108)) ('VHL', 'Disease', (89, 92)) ('SDH', 'Gene', '6390', (111, 114)) ('TMEM127', 'Gene', '55654', (128, 135)) ('Mutations', 'Var', (0, 9)) ('SDHC', 'Gene', '6391', (111, 115)) ('adrenal phaeochromocytoma', 'Disease', 'MESH:D000312', (57, 82)) ('SDHD', 'Gene', '6392', (117, 121)) ('SDHB', 'Gene', '6390', (105, 109)) ('SDH', 'Gene', '6390', (117, 120)) ('RET', 'Gene', '5979', (84, 87)) ('SDH', 'Gene', '6390', (99, 102)) ('SDH', 'Gene', (111, 114)) ('SDHD', 'Gene', (117, 121)) ('VHL', 'Disease', 'MESH:D006623', (89, 92)) ('SDHC', 'Gene', (111, 115)) ('SDHB', 'Gene', (105, 109)) ('SDH', 'Gene', '6390', (105, 108)) ('SDH', 'Gene', (117, 120)) 102441 28965289 Family history of paraganglioma may suggest an SDH mutation. ('paraganglioma', 'Disease', 'MESH:D010235', (18, 31)) ('SDH', 'Gene', (47, 50)) ('paraganglioma', 'Phenotype', 'HP:0002668', (18, 31)) ('mutation', 'Var', (51, 59)) ('paraganglioma', 'Disease', (18, 31)) ('SDH', 'Gene', '6390', (47, 50)) 102445 28965289 Approximately one-third of malignant PPGLs in adults are associated with germline SDHB mutations, and approximately 20% of patients with an identified SDHB mutation will develop a malignant PPGL. ('malignant PPGLs', 'Disease', (27, 42)) ('PPGLs', 'Chemical', '-', (37, 42)) ('SDHB', 'Gene', '6390', (82, 86)) ('patients', 'Species', '9606', (123, 131)) ('PPGLs', 'Disease', (37, 42)) ('SDHB', 'Gene', (82, 86)) ('SDHB', 'Gene', '6390', (151, 155)) ('develop', 'PosReg', (170, 177)) ('SDHB', 'Gene', (151, 155)) ('mutations', 'Var', (87, 96)) ('associated', 'Reg', (57, 67)) 102446 28965289 There is also a high frequency of malignant PPGL in patients with SDHD mutations although the malignant potential appears to be less than that of SDHB associated disease. ('malignant PPGL', 'Disease', (34, 48)) ('SDHD', 'Gene', '6392', (66, 70)) ('SDHB', 'Gene', (146, 150)) ('mutations', 'Var', (71, 80)) ('SDHB', 'Gene', '6390', (146, 150)) ('SDHD', 'Gene', (66, 70)) ('patients', 'Species', '9606', (52, 60)) 102447 28965289 Malignant PPGL have also been reported in patients with SDHC mutations, however the malignant potential is not yet clear. ('reported', 'Reg', (30, 38)) ('PPGL', 'Disease', (10, 14)) ('mutations', 'Var', (61, 70)) ('SDHC', 'Gene', (56, 60)) ('SDHC', 'Gene', '6391', (56, 60)) ('patients', 'Species', '9606', (42, 50)) 102448 28965289 A French-Canadian series recently reported that 30% of patients with a novel SDHC mutation had malignant PPGL. ('SDHC', 'Gene', (77, 81)) ('mutation', 'Var', (82, 90)) ('SDHC', 'Gene', '6391', (77, 81)) ('patients', 'Species', '9606', (55, 63)) 102449 28965289 VHL and MAX mutations are also known to be associated with metastatic disease. ('VHL', 'Disease', 'MESH:D006623', (0, 3)) ('mutations', 'Var', (12, 21)) ('VHL', 'Disease', (0, 3)) ('MAX', 'Gene', (8, 11)) ('associated', 'Reg', (43, 53)) ('metastatic disease', 'Disease', (59, 77)) 102450 28965289 Given the high frequency of germline genetic mutations in patients with metastatic PPGL genetic testing should be performed in this group; in particular for SDHB mutations. ('mutations', 'Var', (162, 171)) ('patients', 'Species', '9606', (58, 66)) ('SDHB', 'Gene', '6390', (157, 161)) ('PPGL', 'Gene', (83, 87)) ('SDHB', 'Gene', (157, 161)) ('metastatic', 'Disease', (72, 82)) 102451 28965289 Immunohistochemical staining of the resected tissue may also suggest the presence of an SDHB/SDHD mutation; as tumours affected by these mutations will have negative staining for SDHB antibodies; this can be used to guide and streamline testing. ('SDHD', 'Gene', (93, 97)) ('mutation', 'Var', (98, 106)) ('tumours', 'Disease', (111, 118)) ('SDHB', 'Gene', '6390', (88, 92)) ('tumour', 'Phenotype', 'HP:0002664', (111, 117)) ('SDHB', 'Gene', (88, 92)) ('SDHB', 'Gene', '6390', (179, 183)) ('tumours', 'Phenotype', 'HP:0002664', (111, 118)) ('SDHB', 'Gene', (179, 183)) ('SDHD', 'Gene', '6392', (93, 97)) ('tumours', 'Disease', 'MESH:D009369', (111, 118)) 102452 28965289 The pattern of catecholamine production has associated with the underlying mutation. ('associated', 'Reg', (44, 54)) ('catecholamine production', 'MPA', (15, 39)) ('mutation', 'Var', (75, 83)) ('catecholamine', 'Chemical', 'MESH:D002395', (15, 28)) 102453 28965289 Tumours associated with SDH mutations (of which SDHD mutations are more frequent in adrenal phaeochromocytoma) tend to be associated with elevated methoxytyramine and also normetanephrine; NF1 and MEN2 with elevated metanephrine and VHL with elevated normetanephrines. ('metanephrine', 'Chemical', 'MESH:D008676', (216, 228)) ('VHL', 'Disease', (233, 236)) ('NF1', 'Gene', '4763', (189, 192)) ('SDHD', 'Gene', '6392', (48, 52)) ('elevated', 'PosReg', (138, 146)) ('metanephrine', 'Chemical', 'MESH:D008676', (175, 187)) ('SDH', 'Gene', '6390', (24, 27)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (147, 162)) ('SDH', 'Gene', '6390', (48, 51)) ('metanephrine', 'Chemical', 'MESH:D008676', (254, 266)) ('normetanephrine', 'MPA', (172, 187)) ('NF1', 'Gene', (189, 192)) ('SDHD', 'Gene', (48, 52)) ('methoxytyramine', 'MPA', (147, 162)) ('adrenal phaeochromocytoma', 'Disease', (84, 109)) ('VHL', 'Disease', 'MESH:D006623', (233, 236)) ('SDH', 'Gene', (48, 51)) ('SDH', 'Gene', (24, 27)) ('adrenal phaeochromocytoma', 'Phenotype', 'HP:0006748', (84, 109)) ('mutations', 'Var', (28, 37)) ('normetanephrines', 'Chemical', 'MESH:D009647', (251, 267)) ('metanephrine', 'MPA', (216, 228)) ('MEN2', 'Gene', (197, 201)) ('MEN2', 'Gene', '5979', (197, 201)) ('normetanephrine', 'Chemical', 'MESH:D009647', (251, 266)) ('normetanephrine', 'Chemical', 'MESH:D009647', (172, 187)) ('Tumours', 'Phenotype', 'HP:0002664', (0, 7)) ('adrenal phaeochromocytoma', 'Disease', 'MESH:D000312', (84, 109)) 102454 28965289 Adrenergic PPGL are not associated with SDH mutations, even with metastastic disease although TMEM127 and MAX mutations are associated with adrenergic adrenal phaeochromocytoma. ('TMEM127', 'Gene', (94, 101)) ('TMEM127', 'Gene', '55654', (94, 101)) ('MAX', 'Gene', (106, 109)) ('mutations', 'Var', (110, 119)) ('adrenal phaeochromocytoma', 'Phenotype', 'HP:0006748', (151, 176)) ('adrenergic adrenal phaeochromocytoma', 'Disease', (140, 176)) ('adrenergic adrenal phaeochromocytoma', 'Disease', 'MESH:D000312', (140, 176)) ('associated', 'Reg', (124, 134)) ('mutations', 'Var', (44, 53)) ('SDH', 'Gene', '6390', (40, 43)) ('SDH', 'Gene', (40, 43)) 102456 28965289 Abdominal/pelvic disease is most commonly associated with SDHB mutations. ('mutations', 'Var', (63, 72)) ('SDHB', 'Gene', (58, 62)) ('associated', 'Reg', (42, 52)) ('Abdominal/pelvic disease', 'Disease', (0, 24)) ('SDHB', 'Gene', '6390', (58, 62)) 102457 28965289 Cardiac paragangliomas have been associated with a variety of SDH mutations. ('mutations', 'Var', (66, 75)) ('SDH', 'Gene', '6390', (62, 65)) ('Cardiac paragangliomas', 'Disease', 'MESH:D010235', (0, 22)) ('SDH', 'Gene', (62, 65)) ('associated', 'Reg', (33, 43)) ('paraganglioma', 'Phenotype', 'HP:0002668', (8, 21)) ('paragangliomas', 'Phenotype', 'HP:0002668', (8, 22)) ('Cardiac paragangliomas', 'Disease', (0, 22)) 102458 28965289 Head and neck paragangliomas are associated with SDH mutations in approximately 50% of cases; most commonly SDHD (approximately 50%) but also with SDHB and SDHC mutations. ('SDH', 'Gene', '6390', (49, 52)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (9, 28)) ('SDH', 'Gene', (147, 150)) ('paragangliomas', 'Disease', (14, 28)) ('SDHC', 'Gene', (156, 160)) ('paraganglioma', 'Phenotype', 'HP:0002668', (14, 27)) ('SDH', 'Gene', (49, 52)) ('SDHB', 'Gene', '6390', (147, 151)) ('SDHD', 'Gene', '6392', (108, 112)) ('SDH', 'Gene', '6390', (108, 111)) ('SDH', 'Gene', '6390', (156, 159)) ('mutations', 'Var', (53, 62)) ('paragangliomas', 'Disease', 'MESH:D010235', (14, 28)) ('paragangliomas', 'Phenotype', 'HP:0002668', (14, 28)) ('SDHB', 'Gene', (147, 151)) ('SDHC', 'Gene', '6391', (156, 160)) ('SDH', 'Gene', '6390', (147, 150)) ('SDHD', 'Gene', (108, 112)) ('associated', 'Reg', (33, 43)) ('mutations', 'Var', (161, 170)) ('SDH', 'Gene', (108, 111)) ('SDH', 'Gene', (156, 159)) 102459 28965289 Thus in head and neck PGL screening for an SDHD mutation could first be undertaken, followed by SDHB, SDHC and SDHA/AF2. ('SDHC', 'Gene', (102, 106)) ('SDH', 'Gene', '6390', (96, 99)) ('SDH', 'Gene', '6390', (102, 105)) ('SDH', 'Gene', (43, 46)) ('SDH', 'Gene', (102, 105)) ('SDHD', 'Gene', '6392', (43, 47)) ('SDHC', 'Gene', '6391', (102, 106)) ('SDH', 'Gene', '6390', (111, 114)) ('SDH', 'Gene', (96, 99)) ('SDHD', 'Gene', (43, 47)) ('mutation', 'Var', (48, 56)) ('SDH', 'Gene', '6390', (43, 46)) ('SDHB', 'Gene', '6390', (96, 100)) ('SDHB', 'Gene', (96, 100)) ('SDH', 'Gene', (111, 114)) 102460 28965289 Other extra-adrenal PGL are generally associated with SDHB/SDHD mutations, and less commonly with VHL, MAX or SDHC mutations. ('VHL', 'Disease', 'MESH:D006623', (98, 101)) ('associated', 'Reg', (38, 48)) ('VHL', 'Disease', (98, 101)) ('SDHB', 'Gene', '6390', (54, 58)) ('SDHB', 'Gene', (54, 58)) ('SDHC', 'Gene', (110, 114)) ('extra-adrenal PGL', 'Disease', (6, 23)) ('SDHC', 'Gene', '6391', (110, 114)) ('SDHD', 'Gene', '6392', (59, 63)) ('mutations', 'Var', (64, 73)) ('SDHD', 'Gene', (59, 63)) 102462 28965289 As with adrenal lesions, metastatic disease is most commonly associated with SDH mutations, in particular germline SDHB mutations. ('SDH', 'Gene', (77, 80)) ('SDHB', 'Gene', '6390', (115, 119)) ('SDHB', 'Gene', (115, 119)) ('SDH', 'Gene', '6390', (115, 118)) ('SDH', 'Gene', '6390', (77, 80)) ('associated', 'Reg', (61, 71)) ('mutations', 'Var', (120, 129)) ('metastatic disease', 'Disease', (25, 43)) ('SDH', 'Gene', (115, 118)) ('mutations', 'Var', (81, 90)) ('adrenal lesions', 'Disease', (8, 23)) ('adrenal lesions', 'Disease', 'MESH:D000307', (8, 23)) 102464 28965289 The familial association of pituitary adenomas with PPGLs (both adrenal and extra-adrenal) has been described, dubbed "3PA"; and has been found to have an association with both SDHB and SDHD mutations. ('PPGLs', 'Gene', (52, 57)) ('SDHD', 'Gene', (186, 190)) ('SDHD', 'Gene', '6392', (186, 190)) ('association', 'Interaction', (155, 166)) ('SDHB', 'Gene', '6390', (177, 181)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (28, 46)) ('mutations', 'Var', (191, 200)) ('SDHB', 'Gene', (177, 181)) ('pituitary adenomas', 'Disease', (28, 46)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (28, 45)) ('PPGLs', 'Chemical', '-', (52, 57)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (28, 46)) 102465 28965289 Thus SDH mutations should be suspected in patients presenting with PPGL and a personal or family history of pituitary adenoma. ('PPGL', 'Disease', (67, 71)) ('SDH', 'Gene', (5, 8)) ('mutations', 'Var', (9, 18)) ('pituitary adenoma', 'Disease', (108, 125)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (108, 125)) ('SDH', 'Gene', '6390', (5, 8)) ('patients', 'Species', '9606', (42, 50)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (108, 125)) 102466 28965289 As in adrenal disease, the secretory pattern for extra-adrenal paragagliomas due to SDH mutations is predominantly dopaminergic; while noradrenergic disease is associated with SDH mutations and, less frequently, VHL/MAX mutations. ('extra-adrenal paragagliomas', 'Disease', (49, 76)) ('VHL', 'Disease', 'MESH:D006623', (212, 215)) ('extra-adrenal paragagliomas', 'Disease', 'MESH:D010236', (49, 76)) ('mutations', 'Var', (88, 97)) ('SDH', 'Gene', '6390', (176, 179)) ('VHL', 'Disease', (212, 215)) ('adrenal disease', 'Phenotype', 'HP:0000834', (6, 21)) ('noradrenergic disease', 'Disease', (135, 156)) ('dopaminergic', 'MPA', (115, 127)) ('SDH', 'Gene', '6390', (84, 87)) ('SDH', 'Gene', (176, 179)) ('secretory pattern', 'MPA', (27, 44)) ('adrenal disease', 'Disease', 'MESH:D000309', (6, 21)) ('SDH', 'Gene', (84, 87)) ('adrenal disease', 'Disease', (6, 21)) 102473 28965289 A recent study found that 25% of patients with asymptomatic SDHB mutations (identified through relationship to an index case) developed SDHB related tumours 2-6 years after identification of the mutation; the psychological impact of testing on asymptomatic carriers has not yet been assessed. ('patients', 'Species', '9606', (33, 41)) ('tumours', 'Disease', (149, 156)) ('SDHB', 'Gene', '6390', (60, 64)) ('SDHB', 'Gene', '6390', (136, 140)) ('SDHB', 'Gene', (60, 64)) ('tumour', 'Phenotype', 'HP:0002664', (149, 155)) ('SDHB', 'Gene', (136, 140)) ('tumours', 'Phenotype', 'HP:0002664', (149, 156)) ('tumours', 'Disease', 'MESH:D009369', (149, 156)) ('mutations', 'Var', (65, 74)) 102477 28965289 It is estimated that approximately 25% of MTC is hereditary and associated with germline mutations in the RET (rearranged during transfection) proto-oncogene. ('associated', 'Reg', (64, 74)) ('MTC', 'Phenotype', 'HP:0002865', (42, 45)) ('RET', 'Gene', (106, 109)) ('MTC', 'Disease', (42, 45)) ('rearranged during transfection', 'Gene', '5979', (111, 141)) ('RET', 'Gene', '5979', (106, 109)) ('germline mutations', 'Var', (80, 98)) ('rearranged during transfection', 'Gene', (111, 141)) 102482 28965289 However, some studies have identified patients with RET mutations as late as the eighth decade of life. ('RET', 'Gene', (52, 55)) ('mutations', 'Var', (56, 65)) ('RET', 'Gene', '5979', (52, 55)) ('patients', 'Species', '9606', (38, 46)) 102483 28965289 Up to 7% of patients with apparently sporadic disease actually have an underlying RET gene mutation which may only present during the typical age range for sporadic tumour development. ('patients', 'Species', '9606', (12, 20)) ('mutation', 'Var', (91, 99)) ('RET', 'Gene', (82, 85)) ('tumour', 'Phenotype', 'HP:0002664', (165, 171)) ('to 7', 'Species', '1214577', (3, 7)) ('sporadic tumour', 'Disease', (156, 171)) ('sporadic tumour', 'Disease', 'MESH:D009369', (156, 171)) ('RET', 'Gene', '5979', (82, 85)) 102493 28965289 Most commonly associated with mutations in exon 16 (M918 T) and less often exon 15 (A883F) of the RET gene, MEN3 is associated with marfanoid habitus and mucosal neuromas; and phaechromocytoma in 50% of those who survive to adulthood. ('A883F', 'Mutation', 'rs377767429', (84, 89)) ('M918 T', 'Var', (52, 58)) ('marfanoid habitus', 'Phenotype', 'HP:0001519', (132, 149)) ('mutations in exon', 'Var', (30, 47)) ('RET', 'Gene', (98, 101)) ('neuromas', 'Phenotype', 'HP:0030430', (162, 170)) ('mucosal neuromas', 'Phenotype', 'HP:0031023', (154, 170)) ('associated', 'Reg', (14, 24)) ('marfanoid habitus and mucosal neuromas', 'Disease', 'MESH:C537724', (132, 170)) ('MEN', 'Species', '9606', (108, 111)) ('phaechromocytoma', 'Disease', (176, 192)) ('RET', 'Gene', '5979', (98, 101)) ('MEN3', 'Gene', (108, 112)) ('M918 T', 'Mutation', 'rs74799832', (52, 58)) ('associated', 'Reg', (116, 126)) 102496 28965289 Therefore, in families where the most aggressive mutations are found (M918 T, A883F) a recommendation can be made for prophylactic thyroidectomy as soon as possible and ideally in the first year of life for those found to have the gene mutation in the absence of disease. ('M918 T', 'Mutation', 'rs74799832', (70, 76)) ('M918 T', 'Var', (70, 76)) ('absence of disease', 'Disease', 'MESH:D004832', (252, 270)) ('A883F', 'Mutation', 'rs377767429', (78, 83)) ('A883F', 'Var', (78, 83)) ('absence of disease', 'Disease', (252, 270)) 102497 28965289 In older patients, with less aggressive mutations, screening for RET mutations allows for prophylactic thyroidectomy and therefore disease prevention. ('RET', 'Gene', (65, 68)) ('patients', 'Species', '9606', (9, 17)) ('RET', 'Gene', '5979', (65, 68)) ('mutations', 'Var', (69, 78)) 102501 28965289 A number of studies have identified gene mutations in patients previously thought to have sporadic MTC or PPGL. ('mutations', 'Var', (41, 50)) ('MTC', 'Disease', (99, 102)) ('PPGL', 'Disease', (106, 110)) ('patients', 'Species', '9606', (54, 62)) ('MTC', 'Phenotype', 'HP:0002865', (99, 102)) 102502 28965289 However, increased screening has in some situations led to increased uncertainty, with mutations of unknown pathogenicity found; some of these in probands with tumours which appear sporadic, with no evidence of disease in family members. ('tumours', 'Disease', 'MESH:D009369', (160, 167)) ('tumours', 'Disease', (160, 167)) ('tumour', 'Phenotype', 'HP:0002664', (160, 166)) ('mutations', 'Var', (87, 96)) ('tumours', 'Phenotype', 'HP:0002664', (160, 167)) 102518 28965289 Genetic counselling prior to screening for a variety of conditions, in a dedicated genetics clinic has been shown to improve patient satisfaction with care, and improve the accuracy of patient perception of future risk following their diagnosis. ('Genetic counselling', 'Var', (0, 19)) ('patient', 'Species', '9606', (185, 192)) ('improve', 'PosReg', (161, 168)) ('improve', 'PosReg', (117, 124)) ('patient', 'Species', '9606', (125, 132)) 102564 27999715 Preoperative preparation includes administration of at least 2 weeks with an alpha blockade such as phenoxybenzamine in addition to a beta blockade. ('a beta', 'Gene', '351', (132, 138)) ('a beta', 'Gene', (132, 138)) ('alpha', 'MPA', (77, 82)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (100, 116)) ('phenoxybenzamine', 'Var', (100, 116)) 102575 21651412 Her nephew and two grandsons were known to have mutations in the gene for succinate dehydrogenase subunit B (SDHB), which increases the risk of pheochromocytoma and paraganglioma. ('succinate dehydrogenase subunit B', 'Gene', (74, 107)) ('paraganglioma', 'Phenotype', 'HP:0002668', (165, 178)) ('SDHB', 'Gene', '6390', (109, 113)) ('SDHB', 'Gene', (109, 113)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (144, 178)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (144, 160)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (74, 107)) ('increases', 'Reg', (122, 131)) ('mutations', 'Var', (48, 57)) 102576 21651412 Genetic analysis confirmed that she carried an SDHB mutation and therefore required careful follow-up evaluation. ('SDHB', 'Gene', '6390', (47, 51)) ('mutation', 'Var', (52, 60)) ('carried', 'Reg', (36, 43)) ('SDHB', 'Gene', (47, 51)) 102638 26407551 Taken all factors into consideration, embolization of the right mass and following excision will reduce intraoperative hemorrhage. ('intraoperative hemorrhage', 'Disease', (104, 129)) ('intraoperative hemorrhage', 'Disease', 'MESH:D006470', (104, 129)) ('embolization', 'Var', (38, 50)) ('reduce', 'NegReg', (97, 103)) 102652 25972017 However, severe hypertension can cause cardio-cerebrovascular complications such as myocardial ischemia, arrhythmia, cerebral hemorrhage, or aortic dissection during the perioperative period. ('cause', 'Reg', (33, 38)) ('aortic dissection', 'Phenotype', 'HP:0002647', (141, 158)) ('myocardial ischemia', 'Phenotype', 'HP:0002637', (84, 103)) ('cardio-cerebrovascular complications', 'Disease', (39, 75)) ('cerebrovascular complications', 'Phenotype', 'HP:0001297', (46, 75)) ('hypertension', 'Disease', 'MESH:D006973', (16, 28)) ('hypertension', 'Disease', (16, 28)) ('severe', 'Var', (9, 15)) ('myocardial ischemia', 'Disease', (84, 103)) ('aortic dissection', 'Disease', (141, 158)) ('arrhythmia', 'Disease', 'MESH:D001145', (105, 115)) ('cardio-cerebrovascular complications', 'Disease', 'MESH:D002561', (39, 75)) ('arrhythmia', 'Phenotype', 'HP:0011675', (105, 115)) ('hypertension', 'Phenotype', 'HP:0000822', (16, 28)) ('arrhythmia', 'Disease', (105, 115)) ('myocardial ischemia', 'Disease', 'MESH:D003324', (84, 103)) ('cerebral hemorrhage', 'Phenotype', 'HP:0001342', (117, 136)) ('cerebral hemorrhage', 'Disease', 'MESH:D002543', (117, 136)) ('cerebral hemorrhage', 'Disease', (117, 136)) 102724 24960812 Hereditary conditions associated include MEN2, von Hippel-Lindau, neurofibromatosis type 1 and familial paraganglioma phaeochromocytoma syndromes with mutations identified in at least six distinct genes (RET, NF1, VHL, SDHB, SDHC and SDHD). ('SDHC', 'Gene', '6391', (225, 229)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (47, 64)) ('neurofibromatosis type 1', 'Gene', '4763', (66, 90)) ('paraganglioma', 'Phenotype', 'HP:0002668', (104, 117)) ('familial paraganglioma phaeochromocytoma syndromes', 'Disease', (95, 145)) ('VHL', 'Disease', 'MESH:D006623', (214, 217)) ('SDHC', 'Gene', (225, 229)) ('NF1', 'Gene', '4763', (209, 212)) ('SDHB', 'Gene', '6390', (219, 223)) ('associated', 'Reg', (22, 32)) ('mutations', 'Var', (151, 160)) ('familial paraganglioma phaeochromocytoma syndromes', 'Disease', 'MESH:D010235', (95, 145)) ('RET', 'Gene', '5979', (204, 207)) ('NF1', 'Gene', (209, 212)) ('von Hippel-Lindau', 'Disease', (47, 64)) ('SDHD', 'Gene', '6392', (234, 238)) ('neurofibromatosis type 1', 'Gene', (66, 90)) ('SDHB', 'Gene', (219, 223)) ('VHL', 'Disease', (214, 217)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (66, 83)) ('MEN2', 'Disease', (41, 45)) ('paraganglioma phaeochromocytoma', 'Phenotype', 'HP:0002666', (104, 135)) ('SDHD', 'Gene', (234, 238)) ('RET', 'Gene', (204, 207)) 102725 24960812 In the case of the rare familial paraganglioma/pheochromocytoma syndromes, mutations are found in genes encoding the succinate-dehydrogenase enzyme complex of the mitochondrial electron transport chain. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (47, 63)) ('mutations', 'Var', (75, 84)) ('familial paraganglioma/pheochromocytoma syndromes', 'Disease', (24, 73)) ('familial paraganglioma/pheochromocytoma syndromes', 'Disease', 'MESH:C531777', (24, 73)) ('paraganglioma', 'Phenotype', 'HP:0002668', (33, 46)) 102748 22109755 A Novel SDHB Mutation Associated with Hereditary Head and Neck Paraganglioma To describe a novel germline mutation in the succinate dehydrogenase subunit B (SDHB) gene. ('Paraganglioma', 'Phenotype', 'HP:0002668', (63, 76)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (122, 155)) ('Head and Neck Paraganglioma', 'Phenotype', 'HP:0002864', (49, 76)) ('succinate dehydrogenase subunit B', 'Gene', (122, 155)) ('Neck Paraganglioma', 'Disease', (58, 76)) ('SDHB', 'Gene', '6390', (8, 12)) ('Mutation', 'Var', (13, 21)) ('mutation', 'Var', (106, 114)) ('SDHB', 'Gene', (8, 12)) ('SDHB', 'Gene', '6390', (157, 161)) ('Associated', 'Reg', (22, 32)) ('SDHB', 'Gene', (157, 161)) ('Neck Paraganglioma', 'Disease', 'MESH:D010235', (58, 76)) 102751 22109755 DNA sequencing revealed a previously unreported conservative substitution (Leu111Val) mutation in the SDHB gene. ('Leu111Val', 'SUBSTITUTION', 'None', (75, 84)) ('SDHB', 'Gene', '6390', (102, 106)) ('Leu111Val', 'Var', (75, 84)) ('SDHB', 'Gene', (102, 106)) 102752 22109755 The Leu111Val germline mutation of SDHB is likely associated with a phenotype of head and neck paragangliomas, and carriers would benefit from periodic screening for sympathetic paragangliomas. ('paragangliomas', 'Disease', (178, 192)) ('paragangliomas', 'Disease', 'MESH:D010235', (178, 192)) ('SDHB', 'Gene', '6390', (35, 39)) ('paragangliomas', 'Phenotype', 'HP:0002668', (178, 192)) ('Leu111Val', 'Var', (4, 13)) ('SDHB', 'Gene', (35, 39)) ('Leu111Val', 'SUBSTITUTION', 'None', (4, 13)) ('paraganglioma', 'Phenotype', 'HP:0002668', (95, 108)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (90, 109)) ('paraganglioma', 'Phenotype', 'HP:0002668', (178, 191)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (81, 109)) ('paragangliomas', 'Disease', 'MESH:D010235', (95, 109)) ('neck paragangliomas', 'Disease', (90, 109)) ('associated', 'Reg', (50, 60)) ('paragangliomas', 'Disease', (95, 109)) ('paragangliomas', 'Phenotype', 'HP:0002668', (95, 109)) 102758 22109755 Additionally, germline mutations in the succinate dehydrogenase (SDH) enzyme complex have been identified in individuals with PG and pheochromocytomas. ('SDH', 'Gene', '6390', (65, 68)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (133, 150)) ('PG', 'Phenotype', 'HP:0002668', (126, 128)) ('SDH', 'Gene', (65, 68)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (133, 149)) ('succinate dehydrogenase', 'Gene', '6390', (40, 63)) ('identified', 'Reg', (95, 105)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (133, 150)) ('germline mutations', 'Var', (14, 32)) ('succinate dehydrogenase', 'Gene', (40, 63)) ('pheochromocytomas', 'Disease', (133, 150)) 102760 22109755 Mutations of genes that produce subunits of this complex cause the inherited PG syndromes (PGL): a mutation of SDHD confers susceptibility to PGL1, SDHB to PGL4, SDHC to PGL3, and SDHAF2 (also known as SDH5) to PGL2. ('PGL3', 'Gene', (170, 174)) ('cause', 'Reg', (57, 62)) ('susceptibility', 'Reg', (124, 138)) ('SDHB', 'Gene', '6390', (148, 152)) ('PGL2', 'Gene', '54949', (211, 215)) ('SDHD', 'Gene', '6392', (111, 115)) ('PGL3', 'Gene', '6391', (170, 174)) ('PG', 'Phenotype', 'HP:0002668', (142, 144)) ('PG', 'Phenotype', 'HP:0002668', (77, 79)) ('mutation', 'Var', (99, 107)) ('SDHC', 'Gene', (162, 166)) ('Mutations', 'Var', (0, 9)) ('SDHD', 'Gene', (111, 115)) ('PGL4', 'Gene', '6390', (156, 160)) ('SDHB', 'Gene', (148, 152)) ('PGL4', 'Gene', (156, 160)) ('PG', 'Phenotype', 'HP:0002668', (156, 158)) ('SDH5', 'Gene', (202, 206)) ('SDHAF2', 'Gene', '54949', (180, 186)) ('inherited PG syndromes', 'Disease', (67, 89)) ('inherited PG syndromes', 'Disease', 'MESH:D030342', (67, 89)) ('SDHAF2', 'Gene', (180, 186)) ('PGL1', 'Gene', (142, 146)) ('PG', 'Phenotype', 'HP:0002668', (91, 93)) ('PG', 'Phenotype', 'HP:0002668', (170, 172)) ('SDHC', 'Gene', '6391', (162, 166)) ('SDH5', 'Gene', '54949', (202, 206)) ('PGL2', 'Gene', (211, 215)) 102763 22109755 Patients with risk factors for a hereditary cause of their tumors, such as those with a family history of PG, onset of disease at an early age or those with multiple primary tumors, may be screened for mutations as may their families. ('tumors', 'Disease', 'MESH:D009369', (174, 180)) ('tumors', 'Disease', (174, 180)) ('tumors', 'Disease', (59, 65)) ('Patients', 'Species', '9606', (0, 8)) ('tumors', 'Disease', 'MESH:D009369', (59, 65)) ('tumors', 'Phenotype', 'HP:0002664', (59, 65)) ('PG', 'Phenotype', 'HP:0002668', (106, 108)) ('tumor', 'Phenotype', 'HP:0002664', (174, 179)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) ('tumors', 'Phenotype', 'HP:0002664', (174, 180)) ('mutations', 'Var', (202, 211)) 102764 22109755 To advance the body of known mutations, we report a novel mutation of the SDHB gene in a patient with bilateral carotid body paragangliomas. ('patient', 'Species', '9606', (89, 96)) ('SDHB', 'Gene', '6390', (74, 78)) ('SDHB', 'Gene', (74, 78)) ('bilateral carotid body paragangliomas', 'Disease', 'MESH:D002345', (102, 139)) ('mutation', 'Var', (58, 66)) ('paragangliomas', 'Phenotype', 'HP:0002668', (125, 139)) ('paraganglioma', 'Phenotype', 'HP:0002668', (125, 138)) ('carotid body paragangliomas', 'Phenotype', 'HP:0100635', (112, 139)) ('bilateral carotid body paragangliomas', 'Disease', (102, 139)) 102772 22109755 Due to the early onset, bilateral nature of her disease and family history of head and neck tumors, genetic counseling and screening for mutations in the SDHB, SDHD, SDHC, SDHAF2, and TMEM127 genes was done. ('neck tumors', 'Disease', 'MESH:D006258', (87, 98)) ('SDHD', 'Gene', '6392', (160, 164)) ('SDHAF2', 'Gene', '54949', (172, 178)) ('head and neck tumors', 'Phenotype', 'HP:0012288', (78, 98)) ('neck tumors', 'Disease', (87, 98)) ('SDHAF2', 'Gene', (172, 178)) ('SDHD', 'Gene', (160, 164)) ('TMEM127', 'Gene', (184, 191)) ('TMEM127', 'Gene', '55654', (184, 191)) ('SDHB', 'Gene', '6390', (154, 158)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('mutations', 'Var', (137, 146)) ('SDHC', 'Gene', (166, 170)) ('SDHB', 'Gene', (154, 158)) ('SDHC', 'Gene', '6391', (166, 170)) ('tumors', 'Phenotype', 'HP:0002664', (92, 98)) 102774 22109755 This mutation resulted in the conservative substitution of valine in place of leucine at amino acid position 111 in the peptide chain (Leu111Val). ('valine in place of leucine at amino acid position 111', 'Mutation', 'p.L111V', (59, 112)) ('peptide', 'Chemical', 'MESH:D010455', (120, 127)) ('resulted in', 'Reg', (14, 25)) ('Leu111Val', 'Var', (135, 144)) ('Leu111Val', 'SUBSTITUTION', 'None', (135, 144)) 102775 22109755 After confirmation of an SDHB mutation and PGL4, the patient was advised by the genetics counseling team. ('PGL4', 'Gene', '6390', (43, 47)) ('mutation', 'Var', (30, 38)) ('PG', 'Phenotype', 'HP:0002668', (43, 45)) ('PGL4', 'Gene', (43, 47)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDHB', 'Gene', (25, 29)) ('patient', 'Species', '9606', (53, 60)) 102779 22109755 In this report, we describe a novel germline mutation in the SDHB gene, mutations of which are known to cause the heritable PG syndrome PGL4. ('mutations', 'Var', (72, 81)) ('germline mutation', 'Var', (36, 53)) ('SDHB', 'Gene', '6390', (61, 65)) ('PG', 'Phenotype', 'HP:0002668', (136, 138)) ('PGL4', 'Gene', (136, 140)) ('PGL4', 'Gene', '6390', (136, 140)) ('cause', 'Reg', (104, 109)) ('SDHB', 'Gene', (61, 65)) ('PG syndrome', 'Disease', (124, 135)) ('PG syndrome', 'Disease', 'MESH:D013577', (124, 135)) ('PG', 'Phenotype', 'HP:0002668', (124, 126)) 102783 22109755 In a combined pheochromocytoma and paraganglioma registry in Europe, 5% of registrants had one of 15 different germline mutations in SDHB, most of them missense mutations. ('pheochromocytoma', 'Disease', 'MESH:D010673', (14, 30)) ('missense mutations', 'Var', (152, 170)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (14, 30)) ('paraganglioma', 'Disease', 'MESH:D010235', (35, 48)) ('SDHB', 'Gene', '6390', (133, 137)) ('SDHB', 'Gene', (133, 137)) ('pheochromocytoma', 'Disease', (14, 30)) ('paraganglioma', 'Phenotype', 'HP:0002668', (35, 48)) ('paraganglioma', 'Disease', (35, 48)) 102784 22109755 A mutation in SDHB tends to cause fewer head and neck PG than SDHD mutations, though malignant tumors and additional extraparaganglial malignancies such as renal cell carcinoma and possibly thyroid papillary carcinoma are more common in those with SDHB mutations. ('SDHB', 'Gene', (248, 252)) ('renal cell carcinoma', 'Disease', (156, 176)) ('carcinoma', 'Phenotype', 'HP:0030731', (208, 217)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (156, 176)) ('carcinoma', 'Phenotype', 'HP:0030731', (167, 176)) ('malignant tumors', 'Disease', 'MESH:D018198', (85, 101)) ('SDHB', 'Gene', '6390', (14, 18)) ('thyroid papillary carcinoma', 'Phenotype', 'HP:0002895', (190, 217)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('PG', 'Phenotype', 'HP:0002668', (54, 56)) ('malignant tumors', 'Disease', (85, 101)) ('mutations', 'Var', (253, 262)) ('thyroid papillary carcinoma', 'Disease', 'MESH:D000077273', (190, 217)) ('malignancies', 'Disease', 'MESH:D009369', (135, 147)) ('SDHD', 'Gene', '6392', (62, 66)) ('fewer', 'NegReg', (34, 39)) ('malignancies', 'Disease', (135, 147)) ('SDHB', 'Gene', (14, 18)) ('mutation', 'Var', (2, 10)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (156, 176)) ('SDHD', 'Gene', (62, 66)) ('SDHB', 'Gene', '6390', (248, 252)) ('thyroid papillary carcinoma', 'Disease', (190, 217)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) 102785 22109755 Furthermore, gastrointestinal stromal tumors may occur in association with PG due to SDHB, SDHD, or SDHC mutations (also known as the Carney-Stratakis dyad). ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('tumors', 'Phenotype', 'HP:0002664', (38, 44)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (13, 44)) ('SDHC', 'Gene', (100, 104)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (13, 44)) ('occur', 'Reg', (49, 54)) ('PG', 'Phenotype', 'HP:0002668', (75, 77)) ('SDHC', 'Gene', '6391', (100, 104)) ('SDHD', 'Gene', (91, 95)) ('SDHD', 'Gene', '6392', (91, 95)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('mutations', 'Var', (105, 114)) ('gastrointestinal stromal tumors', 'Disease', (13, 44)) 102786 22109755 Thus, a patient with a known SDHB mutation deserves full body screening for other tumors or malignancies. ('SDHB', 'Gene', '6390', (29, 33)) ('tumors', 'Disease', (82, 88)) ('malignancies', 'Disease', (92, 104)) ('tumors', 'Disease', 'MESH:D009369', (82, 88)) ('tumors', 'Phenotype', 'HP:0002664', (82, 88)) ('mutation', 'Var', (34, 42)) ('SDHB', 'Gene', (29, 33)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('patient', 'Species', '9606', (8, 15)) ('malignancies', 'Disease', 'MESH:D009369', (92, 104)) 102787 22109755 Mutations in the SDH gene family are hypothesized to cause PG syndromes via two putative mechanisms: the first is by disrupting normal apoptotic pathways in paraganglionic cells - SDH activity is required for the proapoptotic activity of the prolyl hydroxylase EglN3, which is feedback inhibited by succinate. ('cause', 'Reg', (53, 58)) ('SDH', 'Gene', '6390', (180, 183)) ('SDH', 'Gene', (17, 20)) ('EglN3', 'Gene', (261, 266)) ('EglN3', 'Gene', '112399', (261, 266)) ('PG syndrome', 'Disease', (59, 70)) ('disrupting', 'NegReg', (117, 127)) ('Mutations', 'Var', (0, 9)) ('PG syndrome', 'Disease', 'MESH:D013577', (59, 70)) ('apoptotic pathways', 'Pathway', (135, 153)) ('SDH', 'Gene', (180, 183)) ('PG', 'Phenotype', 'HP:0002668', (59, 61)) ('succinate', 'Chemical', 'MESH:D019802', (299, 308)) ('SDH', 'Gene', '6390', (17, 20)) 102788 22109755 With a poorly-functioning SDH enzyme complex, the accumulation of succinate inhibits EglN3, leading to cellular escape from apoptosis. ('EglN3', 'Gene', (85, 90)) ('EglN3', 'Gene', '112399', (85, 90)) ('inhibits', 'NegReg', (76, 84)) ('cellular escape from apoptosis', 'CPA', (103, 133)) ('accumulation', 'Var', (50, 62)) ('SDH', 'Gene', '6390', (26, 29)) ('succinate', 'MPA', (66, 75)) ('succinate', 'Chemical', 'MESH:D019802', (66, 75)) ('SDH', 'Gene', (26, 29)) 102789 22109755 The second mechanism is the dysregulation of hypoxia-induced factors (HIF), which produces a cellular response similar to that of hypoxia, stimulating paraganglial hypertrophy and hyperfunction. ('hypertrophy', 'Disease', (164, 175)) ('hypertrophy', 'Disease', 'MESH:D006984', (164, 175)) ('hypoxia', 'Disease', (130, 137)) ('hypoxia', 'Disease', 'MESH:D000860', (130, 137)) ('stimulating', 'Reg', (139, 150)) ('dysregulation', 'Var', (28, 41)) ('hyperfunction', 'CPA', (180, 193)) ('hypoxia', 'Disease', (45, 52)) ('hypoxia', 'Disease', 'MESH:D000860', (45, 52)) 102790 22109755 Mutations of SDH result in the inhibition of HIF-1 prolyl hydroxylase, which leads to stabilization of HIF-1 cofactor that can enter the nucleus and stimulate gene transcription. ('inhibition', 'NegReg', (31, 41)) ('HIF-1', 'Gene', '3091', (103, 108)) ('SDH', 'Gene', (13, 16)) ('HIF-1', 'Gene', (103, 108)) ('HIF-1', 'Gene', (45, 50)) ('stimulate', 'PosReg', (149, 158)) ('enter', 'MPA', (127, 132)) ('gene transcription', 'MPA', (159, 177)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', '6390', (13, 16)) ('stabilization', 'MPA', (86, 99)) ('HIF-1', 'Gene', '3091', (45, 50)) 102791 22109755 The mutation described in this report is a cytosine-to-guanine mutation at nucleotide 331 that changes the amino acid from leucine to valine at amino acid position 111 in exon 4 (Leu111Val). ('changes', 'Reg', (95, 102)) ('Leu111Val', 'Var', (179, 188)) ('cytosine', 'Chemical', 'MESH:D003596', (43, 51)) ('Leu111Val', 'SUBSTITUTION', 'None', (179, 188)) ('guanine', 'Chemical', 'MESH:D006147', (55, 62)) ('leucine to valine at amino acid position 111', 'Mutation', 'p.L111V', (123, 167)) ('amino', 'MPA', (107, 112)) 102793 22109755 At the time of this drafting, the database contains 24 other mutations in SDHB that contributed to carotid body PG, though most of those patients had other PG or pheochromocytomas as well. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (162, 178)) ('carotid body PG', 'Disease', (99, 114)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (162, 179)) ('PG', 'Phenotype', 'HP:0002668', (156, 158)) ('SDHB', 'Gene', '6390', (74, 78)) ('SDHB', 'Gene', (74, 78)) ('pheochromocytomas', 'Disease', (162, 179)) ('mutations', 'Var', (61, 70)) ('patients', 'Species', '9606', (137, 145)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (162, 179)) ('PG', 'Phenotype', 'HP:0002668', (112, 114)) ('contributed', 'Reg', (84, 95)) 102794 22109755 Because this patient presented with bilateral PG of the carotid body, we presume she has an underlying genetic susceptibility to PG, and we speculate that the Leu111Val mutation of SDHB is pathogenic. ('Leu111Val', 'SUBSTITUTION', 'None', (159, 168)) ('patient', 'Species', '9606', (13, 20)) ('PG', 'Phenotype', 'HP:0002668', (46, 48)) ('presented', 'Reg', (21, 30)) ('PG', 'Phenotype', 'HP:0002668', (129, 131)) ('SDHB', 'Gene', '6390', (181, 185)) ('SDHB', 'Gene', (181, 185)) ('Leu111Val', 'Var', (159, 168)) ('pathogenic', 'Reg', (189, 199)) 102798 22109755 We suggest that patients with features suggesting a heritable PG syndrome undergo screening for mutations in SDHD, SDHB, and SDHC. ('SDHB', 'Gene', '6390', (115, 119)) ('SDHD', 'Gene', '6392', (109, 113)) ('patients', 'Species', '9606', (16, 24)) ('SDHB', 'Gene', (115, 119)) ('SDHD', 'Gene', (109, 113)) ('SDHC', 'Gene', (125, 129)) ('PG syndrome', 'Disease', (62, 73)) ('PG syndrome', 'Disease', 'MESH:D013577', (62, 73)) ('SDHC', 'Gene', '6391', (125, 129)) ('PG', 'Phenotype', 'HP:0002668', (62, 64)) ('mutations', 'Var', (96, 105)) 102801 22109755 It has been argued that patients with seemingly sporadic disease may also benefit from genetic testing, though clinical judgment based on presentation and family history is likely a superior method from a cost-benefit point of view. ('genetic testing', 'Var', (87, 102)) ('benefit', 'Reg', (74, 81)) ('patients', 'Species', '9606', (24, 32)) 102810 22145148 On genetic analysis, a variation, c.IVS 2 + 3 A > G, was found in the intronic region following exon 2 of the VHL gene. ('2 + 3 A > G', 'Var', (40, 51)) ('VHL', 'Gene', '7428', (110, 113)) ('VHL', 'Gene', (110, 113)) ('2 + 3 A > G', 'SUBSTITUTION', 'None', (40, 51)) 102851 22145148 NF1-associated pheochromocytoma has germline NF1 mutations that favor the cysteine serine-rich domain and behaves like a sporadic pheochromocytoma except for increased risk of malignancy. ('pheochromocytoma', 'Disease', (15, 31)) ('mutations', 'Var', (49, 58)) ('malignancy', 'Disease', 'MESH:D009369', (176, 186)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (15, 31)) ('pheochromocytoma', 'Disease', (130, 146)) ('cysteine serine-rich domain', 'MPA', (74, 101)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (15, 31)) ('malignancy', 'Disease', (176, 186)) ('serine', 'Chemical', 'MESH:D012694', (83, 89)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (130, 146)) ('cysteine', 'Chemical', 'MESH:D003545', (74, 82)) ('NF1', 'Gene', (0, 3)) ('NF1', 'Gene', (45, 48)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (130, 146)) ('favor', 'PosReg', (64, 69)) ('NF1', 'Gene', '4763', (0, 3)) ('NF1', 'Gene', '4763', (45, 48)) 102868 19660215 Several series have documented that laparoscopic adrenalectomy is followed by lower complication rates, less operative blood loss, and less need for transfusion, less postoperative pain, earlier return to activity and diet, better cosmetic results, shorter hospital stay, and lower overall costs. ('postoperative pain', 'Disease', (167, 185)) ('postoperative pain', 'Disease', 'MESH:D010149', (167, 185)) ('laparoscopic', 'Var', (36, 48)) ('blood loss', 'Disease', 'MESH:D006473', (119, 129)) ('complication', 'CPA', (84, 96)) ('pain', 'Phenotype', 'HP:0012531', (181, 185)) ('blood loss', 'Disease', (119, 129)) ('lower', 'NegReg', (78, 83)) 102892 19660215 About 10% of pheochromocytomas were thought to be hereditary, but recently it has been shown that approximately 25% of patients with sporadic pheochromocytoma and no family history have germ-line mutations in 1 of 4 susceptible genes for pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (142, 158)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (13, 29)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (238, 254)) ('pheochromocytomas', 'Disease', (13, 30)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (142, 158)) ('sporadic pheochromocytoma', 'Disease', (133, 158)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (13, 30)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (238, 254)) ('patients', 'Species', '9606', (119, 127)) ('pheochromocytoma', 'Disease', (13, 29)) ('sporadic pheochromocytoma', 'Disease', 'MESH:D010673', (133, 158)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (13, 29)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (13, 30)) ('pheochromocytoma', 'Disease', (142, 158)) ('mutations', 'Var', (196, 205)) ('pheochromocytoma', 'Disease', (238, 254)) 102893 19660215 These mutations may be seen in isolation or as part of a syndrome, such as multiple endocrine neoplasia (MEN) IIA and IIB, and various neuroectodermal disorders including neurofibromatosis, von Hippel-Lindau syndrome, Sturge-Weber syndrome, and Carney triad, the latter being associated with multifocal extraadrenal pheochromocytomas. ('von Hippel-Lindau syndrome', 'Disease', (190, 216)) ('Weber syndrome', 'Phenotype', 'HP:0002277', (225, 239)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (190, 216)) ('neuroectodermal disorders', 'Disease', 'MESH:D017599', (135, 160)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (84, 103)) ('multifocal extraadrenal pheochromocytomas', 'Disease', 'MESH:C565335', (292, 333)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (171, 188)) ('neuroectodermal disorders', 'Disease', (135, 160)) ('mutations', 'Var', (6, 15)) ('Carney triad', 'Disease', (245, 257)) ('neurofibromatosis', 'Disease', 'MESH:C537392', (171, 188)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (316, 333)) ('Sturge-Weber syndrome', 'Disease', 'MESH:D013341', (218, 239)) ('neurofibromatosis', 'Disease', (171, 188)) ('neoplasia', 'Phenotype', 'HP:0002664', (94, 103)) ('Sturge-Weber syndrome', 'Disease', (218, 239)) ('multifocal extraadrenal pheochromocytomas', 'Disease', (292, 333)) ('extraadrenal pheochromocytomas', 'Phenotype', 'HP:0006737', (303, 333)) ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (75, 103)) ('IIA', 'Disease', (110, 113)) ('multiple endocrine neoplasia', 'Disease', (75, 103)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (316, 332)) ('MEN', 'Species', '9606', (105, 108)) 102931 19660215 Additionally, laparoscopic adrenalectomy for clinically unsuspected adrenocortical cancer was associated with a high recurrence rate. ('adrenocortical cancer', 'Disease', (68, 89)) ('cancer', 'Phenotype', 'HP:0002664', (83, 89)) ('laparoscopic', 'Var', (14, 26)) ('adrenocortical cancer', 'Disease', 'MESH:D000306', (68, 89)) 103047 15201507 Patients with a positive family history, bilateral adrenal pheochromocytoma, recurrent or multiple pheochromocytoma, and symptoms at a younger age should undergo clinical or genetic testing mutations of the von Hippel-Lindau or RET genes. ('bilateral adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (41, 75)) ('von Hippel-Lindau', 'Disease', (207, 224)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (51, 75)) ('mutations', 'Var', (190, 199)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (207, 224)) ('bilateral adrenal pheochromocytoma', 'Disease', (41, 75)) ('RET', 'Gene', '5979', (228, 231)) ('Patients', 'Species', '9606', (0, 8)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (99, 115)) ('multiple pheochromocytoma', 'Disease', 'MESH:D010673', (90, 115)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (59, 75)) ('RET', 'Gene', (228, 231)) ('multiple pheochromocytoma', 'Disease', (90, 115)) 103048 15201507 Succinate dehydrogenase mutation has been described previously in five families with familial paraganglioma syndrome. ('paraganglioma', 'Phenotype', 'HP:0002668', (94, 107)) ('mutation', 'Var', (24, 32)) ('familial paraganglioma syndrome', 'Disease', 'MESH:D010235', (85, 116)) ('familial paraganglioma syndrome', 'Disease', (85, 116)) 103049 15201507 In both the sporadic and familial forms of pheochromocytoma, allelic losses at 1p, 3p, 17p, and 22q have been reported, yet the molecular pathogenesis of these tumors is largely unknown. ('tumors', 'Phenotype', 'HP:0002664', (160, 166)) ('pheochromocytoma', 'Disease', (43, 59)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (43, 59)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (43, 59)) ('tumors', 'Disease', (160, 166)) ('allelic losses', 'Var', (61, 75)) ('tumors', 'Disease', 'MESH:D009369', (160, 166)) 103057 29846902 Molecular evaluation of a sporadic paraganglioma with concurrent IDH1 and ATRX mutations Pheochromocytomas and paragangliomas (PPGLs) are neuroendocrine tumors of neural crest origin. ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (138, 159)) ('paraganglioma', 'Phenotype', 'HP:0002668', (111, 124)) ('paragangliomas', 'Phenotype', 'HP:0002668', (111, 125)) ('glioma', 'Phenotype', 'HP:0009733', (118, 124)) ('mutations', 'Var', (79, 88)) ('IDH1', 'Gene', '3417', (65, 69)) ('gliomas', 'Phenotype', 'HP:0009733', (118, 125)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (138, 159)) ('ATRX', 'Gene', (74, 78)) ('Pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (89, 125)) ('glioma', 'Phenotype', 'HP:0009733', (42, 48)) ('sporadic paraganglioma', 'Disease', (26, 48)) ('ATRX', 'Gene', '546', (74, 78)) ('PPGLs', 'Chemical', '-', (127, 132)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (89, 106)) ('tumors', 'Phenotype', 'HP:0002664', (153, 159)) ('neuroendocrine tumors', 'Disease', (138, 159)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('paraganglioma', 'Phenotype', 'HP:0002668', (35, 48)) ('IDH1', 'Gene', (65, 69)) ('sporadic paraganglioma', 'Disease', 'MESH:D010235', (26, 48)) 103058 29846902 Germline or somatic mutations of numerous genes have been implicated in the pathogenesis of PPGLs, including the isocitrate dehydrogenase 1 (IDH1) gene and alpha thalassemia/mental retardation syndrome X-linked (ATRX) gene. ('PPGLs', 'Chemical', '-', (92, 97)) ('IDH1', 'Gene', (141, 145)) ('isocitrate dehydrogenase 1', 'Gene', '3417', (113, 139)) ('isocitrate dehydrogenase 1', 'Gene', (113, 139)) ('thalassemia/mental retardation syndrome X-linked', 'Disease', (162, 210)) ('mental retardation', 'Phenotype', 'HP:0001249', (174, 192)) ('thalassemia/mental retardation syndrome X-linked', 'Disease', 'MESH:C538258', (162, 210)) ('PPGLs', 'Disease', (92, 97)) ('implicated', 'Reg', (58, 68)) ('mutations', 'Var', (20, 29)) 103059 29846902 Although concurrent IDH1 and ATRX mutations are frequently seen in gliomas, they have never been reported together in PPGLs. ('seen', 'Reg', (59, 63)) ('PPGLs', 'Chemical', '-', (118, 123)) ('mutations', 'Var', (34, 43)) ('gliomas', 'Disease', 'MESH:D005910', (67, 74)) ('gliomas', 'Phenotype', 'HP:0009733', (67, 74)) ('gliomas', 'Disease', (67, 74)) ('IDH1', 'Gene', (20, 24)) ('glioma', 'Phenotype', 'HP:0009733', (67, 73)) ('ATRX', 'Gene', (29, 33)) 103060 29846902 The aim of this study was to characterize one paraganglioma with concurrent IDH1 and ATRX mutations identified by whole exome sequencing. ('IDH1', 'Gene', (76, 80)) ('mutations', 'Var', (90, 99)) ('ATRX', 'Gene', (85, 89)) ('paraganglioma', 'Disease', 'MESH:D010235', (46, 59)) ('paraganglioma', 'Phenotype', 'HP:0002668', (46, 59)) ('glioma', 'Phenotype', 'HP:0009733', (53, 59)) ('paraganglioma', 'Disease', (46, 59)) 103064 29846902 The presence of a somatic IDH1 (c.394C>T, p.R132C) mutation and a concurrent somatic ATRX splicing mutation (c.4318-2A>G) in the current case was confirmed. ('c.394C>T', 'Mutation', 'rs121913499', (32, 40)) ('p.R132C', 'Var', (42, 49)) ('p.R132C', 'Mutation', 'rs121913499', (42, 49)) ('IDH1', 'Gene', (26, 30)) ('c.394C>T', 'Var', (32, 40)) ('c.4318-2A>G', 'Var', (109, 120)) ('c.4318-2A>G', 'Mutation', 'c.4318-2A>G', (109, 120)) 103066 29846902 Importantly, immunohistochemistry revealed negative TH staining in the tumor and the first exon region of TH gene was hypermethylated resulting in normal plasma metanephrines. ('plasma metanephrines', 'MPA', (154, 174)) ('tumor', 'Disease', 'MESH:D009369', (71, 76)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('tumor', 'Disease', (71, 76)) ('normal', 'PosReg', (147, 153)) ('hypermethylated', 'Var', (118, 133)) ('metanephrines', 'Chemical', 'MESH:D008676', (161, 174)) 103068 29846902 This case represents the first concurrence of IDH1 and ATRX mutations in PPGLs. ('mutations', 'Var', (60, 69)) ('PPGLs', 'Gene', (73, 78)) ('PPGLs', 'Chemical', '-', (73, 78)) 103069 29846902 Although relatively rare, a somatic R132C mutation of IDH1 might play a role in a small subset of sporadic PPGLs. ('PPGLs', 'Disease', (107, 112)) ('R132C', 'Var', (36, 41)) ('R132C', 'Mutation', 'rs121913499', (36, 41)) ('IDH1', 'Gene', (54, 58)) ('role', 'Reg', (72, 76)) ('PPGLs', 'Chemical', '-', (107, 112)) ('play', 'Reg', (65, 69)) 103074 29846902 Somatic IDH1 mutation at R132 has been previously reported in gliomas and acute myeloid leukemia (AML). ('acute myeloid leukemia', 'Disease', (74, 96)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (80, 96)) ('gliomas', 'Disease', (62, 69)) ('AML', 'Disease', 'MESH:D015470', (98, 101)) ('IDH1', 'Gene', (8, 12)) ('glioma', 'Phenotype', 'HP:0009733', (62, 68)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (74, 96)) ('leukemia', 'Phenotype', 'HP:0001909', (88, 96)) ('mutation at R132', 'Var', (13, 29)) ('reported', 'Reg', (50, 58)) ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (74, 96)) ('AML', 'Disease', (98, 101)) ('AML', 'Phenotype', 'HP:0004808', (98, 101)) ('gliomas', 'Disease', 'MESH:D005910', (62, 69)) ('gliomas', 'Phenotype', 'HP:0009733', (62, 69)) 103075 29846902 The mutation alters the function of the enzyme by favoring reverse conversion of NADPH to NADP and metabolism of alpha-ketoglutarate to the D isomer of 2-hydroxyglutarate (2-HG), an oncometabolite. ('alters', 'Reg', (13, 19)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (113, 132)) ('NADP', 'Chemical', 'MESH:D009249', (90, 94)) ('reverse conversion', 'MPA', (59, 77)) ('favoring', 'PosReg', (50, 58)) ('function', 'MPA', (24, 32)) ('mutation', 'Var', (4, 12)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (152, 170)) ('2-HG', 'Chemical', 'MESH:C019417', (172, 176)) ('metabolism', 'MPA', (99, 109)) ('NADPH', 'Chemical', 'MESH:D009249', (81, 86)) ('NADP', 'Chemical', 'MESH:D009249', (81, 85)) 103077 29846902 However, the IDH1 mutation is extremely rare in PPGLs and remains to be confirmed by more cases. ('PPGLs', 'Chemical', '-', (48, 53)) ('mutation', 'Var', (18, 26)) ('IDH1', 'Gene', (13, 17)) 103078 29846902 Somatic ATRX mutations have been reported in glioma, pancreatic neuroendocrine tumors, pediatric osteosarcoma, and recently in PPGLs. ('ATRX', 'Gene', (8, 12)) ('glioma', 'Disease', 'MESH:D005910', (45, 51)) ('glioma', 'Phenotype', 'HP:0009733', (45, 51)) ('pancreatic neuroendocrine tumors', 'Disease', (53, 85)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('PPGLs', 'Chemical', '-', (127, 132)) ('osteosarcoma', 'Phenotype', 'HP:0002669', (97, 109)) ('osteosarcoma', 'Disease', (97, 109)) ('osteosarcoma', 'Disease', 'MESH:D012516', (97, 109)) ('reported', 'Reg', (33, 41)) ('pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (53, 85)) ('mutations', 'Var', (13, 22)) ('glioma', 'Disease', (45, 51)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (64, 85)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) 103079 29846902 Tumors with inactivating ATRX mutations frequently associates with alternative lengthening of telomeres (ALT), and the ALT phenotype is observed in 5%-15% of human cancers. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('inactivating', 'Var', (12, 24)) ('cancer', 'Phenotype', 'HP:0002664', (164, 170)) ('human', 'Species', '9606', (158, 163)) ('ATRX', 'Gene', (25, 29)) ('associates', 'Reg', (51, 61)) ('cancers', 'Phenotype', 'HP:0002664', (164, 171)) ('Tumors', 'Disease', (0, 6)) ('cancers', 'Disease', (164, 171)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('mutations', 'Var', (30, 39)) ('cancers', 'Disease', 'MESH:D009369', (164, 171)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) 103080 29846902 IDH1 mutations are frequently accompanied by ATRX-inactivating mutations in adult gliomas, especially astrocytomas, but this association has not been reported in other tumors so far. ('glioma', 'Phenotype', 'HP:0009733', (82, 88)) ('tumors', 'Phenotype', 'HP:0002664', (168, 174)) ('astrocytomas', 'Disease', 'MESH:D001254', (102, 114)) ('astrocytoma', 'Phenotype', 'HP:0009592', (102, 113)) ('tumors', 'Disease', (168, 174)) ('tumors', 'Disease', 'MESH:D009369', (168, 174)) ('mutations', 'Var', (5, 14)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) ('astrocytomas', 'Disease', (102, 114)) ('gliomas', 'Disease', 'MESH:D005910', (82, 89)) ('gliomas', 'Phenotype', 'HP:0009733', (82, 89)) ('gliomas', 'Disease', (82, 89)) ('accompanied', 'Reg', (30, 41)) ('IDH1', 'Gene', (0, 4)) ('ATRX-inactivating', 'MPA', (45, 62)) 103081 29846902 Here, we report a heterozygous IDH1 mutation accompanied by ATRX mutation in one paraganglioma, identified by whole-exome sequencing. ('paraganglioma', 'Phenotype', 'HP:0002668', (81, 94)) ('ATRX', 'Gene', (60, 64)) ('paraganglioma', 'Disease', (81, 94)) ('mutation', 'Var', (65, 73)) ('accompanied', 'Reg', (45, 56)) ('glioma', 'Phenotype', 'HP:0009733', (88, 94)) ('paraganglioma', 'Disease', 'MESH:D010235', (81, 94)) ('mutation', 'Var', (36, 44)) ('IDH1', 'Gene', (31, 35)) 103087 29846902 Metabolites in the tumors with or without IDH1 mutation (70 mg of tumor from each patient) were extracted and GC-MS analysis were performed, as previously described. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('tumors', 'Disease', (19, 25)) ('tumors', 'Disease', 'MESH:D009369', (19, 25)) ('patient', 'Species', '9606', (82, 89)) ('tumor', 'Disease', (66, 71)) ('tumor', 'Disease', 'MESH:D009369', (19, 24)) ('mutation', 'Var', (47, 55)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('tumor', 'Disease', (19, 24)) ('IDH1', 'Gene', (42, 46)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) 103105 29846902 Whole-exome sequencing identified two heterozygous mutations in the tumor: an IDH1 mutation (c.394C > T, p. R132C) and an ATRX mutation (c.4318-2A > G), confirmed by Sanger sequencing (Fig. ('tumor', 'Disease', (68, 73)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('IDH1', 'Gene', (78, 82)) ('tumor', 'Disease', 'MESH:D009369', (68, 73)) ('c.4318-2A > G', 'Mutation', 'c.4318-2A>G', (137, 150)) ('c.394C > T', 'Var', (93, 103)) ('R132C', 'Var', (108, 113)) ('c.394C > T', 'Mutation', 'rs121913499', (93, 103)) ('R132C', 'SUBSTITUTION', 'None', (108, 113)) ('c.4318-2A >', 'Var', (137, 148)) 103107 29846902 To determine whether the somatic IDH1 (R132C) mutation was functioning in the current paraganglioma, metabolites from freshly frozen tumors with or without IDH1 (R132C) mutation were analyzed by GC-MS. As expected, dramatic accumulation of 2-hydroxyglutarate was detected in the IDH1 (R132C) mutant tumor, whereas 2-hydroxyglutarate was almost undetectable in the control tumors without IDH1 mutation (Fig. ('paraganglioma', 'Disease', 'MESH:D010235', (86, 99)) ('tumor', 'Phenotype', 'HP:0002664', (372, 377)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (314, 332)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('tumors', 'Phenotype', 'HP:0002664', (372, 378)) ('R132C', 'Mutation', 'rs121913499', (39, 44)) ('tumor', 'Phenotype', 'HP:0002664', (299, 304)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (240, 258)) ('tumors', 'Phenotype', 'HP:0002664', (133, 139)) ('IDH1 (R132C) mutant', 'Var', (279, 298)) ('accumulation', 'PosReg', (224, 236)) ('paraganglioma', 'Phenotype', 'HP:0002668', (86, 99)) ('tumors', 'Disease', (372, 378)) ('R132C', 'Mutation', 'rs121913499', (285, 290)) ('glioma', 'Phenotype', 'HP:0009733', (93, 99)) ('tumors', 'Disease', (133, 139)) ('tumor', 'Disease', (372, 377)) ('R132C', 'Mutation', 'rs121913499', (162, 167)) ('tumors', 'Disease', 'MESH:D009369', (372, 378)) ('tumor', 'Disease', (133, 138)) ('tumor', 'Disease', 'MESH:D009369', (372, 377)) ('tumor', 'Disease', (299, 304)) ('tumors', 'Disease', 'MESH:D009369', (133, 139)) ('tumor', 'Disease', 'MESH:D009369', (133, 138)) ('2-hydroxyglutarate', 'MPA', (240, 258)) ('paraganglioma', 'Disease', (86, 99)) ('tumor', 'Disease', 'MESH:D009369', (299, 304)) 103116 29846902 In the current case, the somatic-splicing mutation (c.4318-2A > G) of ATRX gene was predicted to affect exon 15 because it occurred 2 base pairs away from the 5' end. ('exon 15', 'MPA', (104, 111)) ('c.4318-2A > G', 'Mutation', 'c.4318-2A>G', (52, 65)) ('c.4318-2A > G', 'Var', (52, 65)) ('affect', 'Reg', (97, 103)) ('ATRX', 'Gene', (70, 74)) 103118 29846902 Here, we report a somatic heterozygous IDH1 (c.394C > T, p.R132C) mutation accompanied by somatic ATRX (c.4318-2A > G)-splicing mutation in one paraganglioma patient. ('p.R132C', 'Mutation', 'rs121913499', (57, 64)) ('c.4318-2A > G', 'Mutation', 'c.4318-2A>G', (104, 117)) ('glioma', 'Phenotype', 'HP:0009733', (151, 157)) ('patient', 'Species', '9606', (158, 165)) ('paraganglioma', 'Phenotype', 'HP:0002668', (144, 157)) ('IDH1', 'Gene', (39, 43)) ('c.394C > T', 'Var', (45, 55)) ('paraganglioma', 'Disease', (144, 157)) ('c.4318-2A > G)-splicing', 'Var', (104, 127)) ('c.394C > T', 'Mutation', 'rs121913499', (45, 55)) ('paraganglioma', 'Disease', 'MESH:D010235', (144, 157)) 103119 29846902 In gliomas, IDH1 mutations are very-early genetic events in a common glial precursor cell population with a well-established pathogenic role. ('IDH1', 'Gene', (12, 16)) ('glioma', 'Phenotype', 'HP:0009733', (3, 9)) ('gliomas', 'Disease', 'MESH:D005910', (3, 10)) ('gliomas', 'Phenotype', 'HP:0009733', (3, 10)) ('gliomas', 'Disease', (3, 10)) ('mutations', 'Var', (17, 26)) 103120 29846902 Consistent with previous studies, the heterozygous R132C mutant paraganglioma in our study had an extremely high level of 2-hydroxyglutarate:direct evidence that the mutant IDH1 enzyme was active. ('paraganglioma', 'Disease', (64, 77)) ('paraganglioma', 'Disease', 'MESH:D010235', (64, 77)) ('R132C', 'Mutation', 'rs121913499', (51, 56)) ('R132C', 'Var', (51, 56)) ('glioma', 'Phenotype', 'HP:0009733', (71, 77)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (122, 140)) ('level of 2-hydroxyglutarate', 'MPA', (113, 140)) ('paraganglioma', 'Phenotype', 'HP:0002668', (64, 77)) 103122 29846902 Surprisingly, our paraganglioma showed the absence of the hypermethylator phenotype, though the methylation status mighthave been complicated by ATRX mutation as well. ('paraganglioma', 'Disease', 'MESH:D010235', (18, 31)) ('mutation', 'Var', (150, 158)) ('glioma', 'Phenotype', 'HP:0009733', (25, 31)) ('paraganglioma', 'Phenotype', 'HP:0002668', (18, 31)) ('ATRX', 'Gene', (145, 149)) ('paraganglioma', 'Disease', (18, 31)) 103123 29846902 IDH1 mutations are extremely rare in PPGLs, to our knowledge, three paragangliomas with somatic IDH1 mutations have been documented in literature. ('glioma', 'Phenotype', 'HP:0009733', (75, 81)) ('PPGLs', 'Chemical', '-', (37, 42)) ('paraganglioma', 'Phenotype', 'HP:0002668', (68, 81)) ('paragangliomas', 'Phenotype', 'HP:0002668', (68, 82)) ('rat', 'Species', '10116', (139, 142)) ('mutations', 'Var', (5, 14)) ('PPGLs', 'Disease', (37, 42)) ('gliomas', 'Phenotype', 'HP:0009733', (75, 82)) ('IDH1', 'Gene', (0, 4)) ('paragangliomas', 'Disease', 'MESH:D010235', (68, 82)) ('paragangliomas', 'Disease', (68, 82)) 103126 29846902 All tumors carried the relatively rare R132C somatic mutation, instead of the most common R132H mutation (Table S4). ('tumors', 'Disease', 'MESH:D009369', (4, 10)) ('tumors', 'Disease', (4, 10)) ('tumors', 'Phenotype', 'HP:0002664', (4, 10)) ('R132H', 'Mutation', 'rs121913500', (90, 95)) ('R132C', 'Mutation', 'rs121913499', (39, 44)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) ('R132C', 'Var', (39, 44)) 103127 29846902 In patients with gliomas and AMLs, IDH1 mutations were generally associated with favorable prognosis; a recent study revealed that accumulation of the oncometabolite 2-hydroxyglutarate exhibits anti-proliferation effects, while it contributes to cancer initiation. ('IDH1', 'Gene', (35, 39)) ('accumulation', 'PosReg', (131, 143)) ('rat', 'Species', '10116', (206, 209)) ('cancer', 'Disease', (246, 252)) ('AMLs', 'Disease', (29, 33)) ('mutations', 'Var', (40, 49)) ('cancer', 'Phenotype', 'HP:0002664', (246, 252)) ('gliomas', 'Disease', (17, 24)) ('contributes', 'Reg', (231, 242)) ('rat', 'Species', '10116', (180, 183)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (166, 184)) ('patients', 'Species', '9606', (3, 11)) ('gliomas', 'Disease', 'MESH:D005910', (17, 24)) ('cancer', 'Disease', 'MESH:D009369', (246, 252)) ('glioma', 'Phenotype', 'HP:0009733', (17, 23)) ('AML', 'Phenotype', 'HP:0004808', (29, 32)) ('anti-proliferation effects', 'CPA', (194, 220)) ('gliomas', 'Phenotype', 'HP:0009733', (17, 24)) ('AMLs', 'Disease', 'None', (29, 33)) 103129 29846902 Recent studies have classified PPGLs mutations into three main clusters based on their gene expression profiles: pseudohypoxia group, Wnt-signaling group, and kinase-signaling group. ('hypoxia', 'Disease', 'MESH:D000860', (119, 126)) ('hypoxia', 'Disease', (119, 126)) ('Wnt-signaling', 'Disease', (134, 147)) ('mutations', 'Var', (37, 46)) ('PPGLs', 'Chemical', '-', (31, 36)) ('PPGLs', 'Gene', (31, 36)) 103131 29846902 Mutations of key enzymes of the Krebs cycle usually cause a pseudohypoxia effect. ('hypoxia', 'Disease', 'MESH:D000860', (66, 73)) ('cause', 'Reg', (52, 57)) ('Mutations', 'Var', (0, 9)) ('hypoxia', 'Disease', (66, 73)) ('Krebs', 'Chemical', '-', (32, 37)) 103137 29846902 Somatic mutations in the ATRX gene have recently been related to PPGLs, with varied prevalence; ATRX splicing mutations are rare and usually destabilize the RNA transcripts, resulting in scarce expression of ATRX protein. ('mutations', 'Var', (110, 119)) ('ATRX', 'Gene', (25, 29)) ('RNA transcripts', 'MPA', (157, 172)) ('ATRX', 'Gene', (96, 100)) ('scarce', 'NegReg', (187, 193)) ('PPGLs', 'Chemical', '-', (65, 70)) ('ATRX protein', 'Protein', (208, 220)) ('destabilize', 'NegReg', (141, 152)) ('expression', 'MPA', (194, 204)) 103139 29846902 While most tumors rely on telomerase to maintain long telomeres and achieve immortalization, approximately 10-15% of non-epithelial tumors (such as gliomas) utilize a telomerase-independent mechanism: ALT:commonly associated with high levels of telomeric instability. ('telomeric instability', 'MPA', (245, 266)) ('tumor', 'Phenotype', 'HP:0002664', (11, 16)) ('gliomas', 'Phenotype', 'HP:0009733', (148, 155)) ('gliomas', 'Disease', (148, 155)) ('tumors', 'Phenotype', 'HP:0002664', (11, 17)) ('gliomas', 'Disease', 'MESH:D005910', (148, 155)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('tumors', 'Disease', (11, 17)) ('tumors', 'Disease', 'MESH:D009369', (11, 17)) ('ALT', 'Var', (201, 204)) ('tumors', 'Phenotype', 'HP:0002664', (132, 138)) ('glioma', 'Phenotype', 'HP:0009733', (148, 154)) ('tumors', 'Disease', (132, 138)) ('tumors', 'Disease', 'MESH:D009369', (132, 138)) 103140 29846902 Astrocytomas and pancreatic neuroendocrine tumors with inactivating ATRX mutations frequently display evidence of ALT. ('inactivating', 'Var', (55, 67)) ('ALT', 'Disease', (114, 117)) ('Astrocytomas and pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (0, 49)) ('ATRX', 'Gene', (68, 72)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (28, 49)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('tumors', 'Phenotype', 'HP:0002664', (43, 49)) ('mutations', 'Var', (73, 82)) 103141 29846902 Less often, ALT has been reported in some of PPGLs carrying ATRX mutations. ('reported', 'Reg', (25, 33)) ('ALT', 'Disease', (12, 15)) ('ATRX', 'Gene', (60, 64)) ('PPGLs', 'Chemical', '-', (45, 50)) ('mutations', 'Var', (65, 74)) 103142 29846902 Notably, ATRX mutations alone do not trigger ALT; the relationship between ATRX mutation and ALT in PPGLs remains to be further investigated by additional cases. ('ATRX', 'Gene', (75, 79)) ('PPGLs', 'Chemical', '-', (100, 105)) ('mutations', 'Var', (14, 23)) 103143 29846902 Concurrent somatic IDH1 and ATRX mutations are very common in gliomas, particularly in the astrocytoma subtype. ('gliomas', 'Phenotype', 'HP:0009733', (62, 69)) ('glioma', 'Phenotype', 'HP:0009733', (62, 68)) ('IDH1', 'Gene', (19, 23)) ('ATRX', 'Gene', (28, 32)) ('mutations', 'Var', (33, 42)) ('astrocytoma', 'Disease', 'MESH:D001254', (91, 102)) ('astrocytoma', 'Phenotype', 'HP:0009592', (91, 102)) ('gliomas', 'Disease', (62, 69)) ('astrocytoma', 'Disease', (91, 102)) ('gliomas', 'Disease', 'MESH:D005910', (62, 69)) ('common', 'Reg', (52, 58)) 103145 29846902 However, somatic ATRX mutation is an exception and is frequently associated with hereditary SDHB mutations in PPGLs. ('mutations', 'Var', (97, 106)) ('PPGLs', 'Gene', (110, 115)) ('SDHB', 'Gene', '6390', (92, 96)) ('associated', 'Reg', (65, 75)) ('SDHB', 'Gene', (92, 96)) ('somatic ATRX', 'Disease', (9, 21)) ('PPGLs', 'Chemical', '-', (110, 115)) 103146 29846902 In the current paraganglioma, somatic IDH1 mutation, instead of germline SDHB mutation, was found to coexist with somatic ATRX mutation:resembling a common cooperation between ATRX and IDH1 mutations in gliomas. ('gliomas', 'Disease', 'MESH:D005910', (203, 210)) ('paraganglioma', 'Disease', (15, 28)) ('gliomas', 'Phenotype', 'HP:0009733', (203, 210)) ('glioma', 'Phenotype', 'HP:0009733', (203, 209)) ('mutation', 'Var', (43, 51)) ('paraganglioma', 'Disease', 'MESH:D010235', (15, 28)) ('rat', 'Species', '10116', (161, 164)) ('glioma', 'Phenotype', 'HP:0009733', (22, 28)) ('paraganglioma', 'Phenotype', 'HP:0002668', (15, 28)) ('SDHB', 'Gene', '6390', (73, 77)) ('gliomas', 'Disease', (203, 210)) ('SDHB', 'Gene', (73, 77)) 103147 29846902 The collaboration between IDH1 and ATRX mutations in tumors is not well understood. ('IDH1', 'Gene', (26, 30)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('mutations', 'Var', (40, 49)) ('tumors', 'Phenotype', 'HP:0002664', (53, 59)) ('rat', 'Species', '10116', (11, 14)) ('ATRX', 'Gene', (35, 39)) ('tumors', 'Disease', 'MESH:D009369', (53, 59)) ('tumors', 'Disease', (53, 59)) 103148 29846902 A generation of mouse models lacking ATRX expression in conjunction with IDH1 R132 mutations in specific cell types would be an excellent way to decipher the underlying molecular events in future. ('IDH1 R132', 'Gene', (73, 82)) ('mutations', 'Var', (83, 92)) ('lacking', 'NegReg', (29, 36)) ('mouse', 'Species', '10090', (16, 21)) ('rat', 'Species', '10116', (6, 9)) ('ATRX', 'Gene', (37, 41)) 103149 29846902 In summary, our case indicates that the rare somatic R132C mutation of IDH1 might play a role in a small subset of sporadic PPGLs and:just like in gliomas:IDH1 and ATRX mutations can coexist in PPGLs. ('IDH1', 'Gene', (155, 159)) ('PPGLs', 'Chemical', '-', (124, 129)) ('PPGLs', 'Disease', (124, 129)) ('PPGLs', 'Disease', (194, 199)) ('glioma', 'Phenotype', 'HP:0009733', (147, 153)) ('IDH1', 'Gene', (71, 75)) ('R132C', 'Mutation', 'rs121913499', (53, 58)) ('gliomas', 'Phenotype', 'HP:0009733', (147, 154)) ('gliomas', 'Disease', (147, 154)) ('gliomas', 'Disease', 'MESH:D005910', (147, 154)) ('R132C', 'Var', (53, 58)) ('PPGLs', 'Chemical', '-', (194, 199)) 103150 29917232 PHD2 inactivation in Type I cells drives HIF-2alpha-dependent multilineage hyperplasia and the formation of paraganglioma-like carotid bodies The carotid body is a peripheral arterial chemoreceptor that regulates ventilation in response to both acute and sustained hypoxia. ('paraganglioma', 'Disease', 'MESH:D010235', (108, 121)) ('hyperplasia', 'Disease', (75, 86)) ('PHD2', 'Gene', '112405', (0, 4)) ('hypoxia', 'Disease', (265, 272)) ('hypoxia', 'Disease', 'MESH:D000860', (265, 272)) ('HIF-2alpha', 'Gene', '13819', (41, 51)) ('PHD2', 'Gene', (0, 4)) ('inactivation', 'Var', (5, 17)) ('paraganglioma', 'Phenotype', 'HP:0002668', (108, 121)) ('HIF-2alpha', 'Gene', (41, 51)) ('hyperplasia', 'Disease', 'MESH:D006965', (75, 86)) ('paraganglioma', 'Disease', (108, 121)) 103153 29917232 Inactivation of HIF-2alpha in Type I cells impairs the ventilatory, proliferative and cell intrinsic (dense core vesicle) responses to hypoxia. ('hypoxia', 'Disease', (135, 142)) ('hypoxia', 'Disease', 'MESH:D000860', (135, 142)) ('impairs', 'NegReg', (43, 50)) ('rat', 'Species', '10116', (75, 78)) ('HIF-2alpha', 'Gene', (16, 26)) ('ventilatory', 'MPA', (55, 66)) ('proliferative', 'CPA', (68, 81)) ('Inactivation', 'Var', (0, 12)) 103154 29917232 Inactivation of PHD2 in Type I cells induces multilineage hyperplasia and ultrastructural changes in dense core vesicles to form paraganglioma-like carotid bodies. ('multilineage hyperplasia', 'Disease', (45, 69)) ('induces', 'Reg', (37, 44)) ('paraganglioma', 'Phenotype', 'HP:0002668', (129, 142)) ('paraganglioma', 'Disease', (129, 142)) ('PHD2', 'Gene', (16, 20)) ('multilineage hyperplasia', 'Disease', 'MESH:D006965', (45, 69)) ('paraganglioma', 'Disease', 'MESH:D010235', (129, 142)) ('ultrastructural changes', 'CPA', (74, 97)) ('Inactivation', 'Var', (0, 12)) 103162 29917232 Inactivation of a specific HIF isoform, HIF-2alpha, in the Type I cells was associated with a greatly reduced proliferation of Type I cells and hypoxic ventilatory responses, with ultrastructural evidence of an abnormality in the action of hypoxia on dense core secretory vesicles. ('rat', 'Species', '10116', (117, 120)) ('proliferation', 'CPA', (110, 123)) ('HIF-2alpha', 'Gene', (40, 50)) ('hypoxic ventilatory responses', 'CPA', (144, 173)) ('hypoxia', 'Disease', (240, 247)) ('hypoxia', 'Disease', 'MESH:D000860', (240, 247)) ('reduced', 'NegReg', (102, 109)) ('Inactivation', 'Var', (0, 12)) 103163 29917232 We also show that inactivation of the principal HIF prolyl hydroxylase PHD2 within the Type I cell lineage is sufficient to cause multilineage expansion of the carotid body, with characteristics resembling paragangliomas. ('paragangliomas', 'Disease', (206, 220)) ('inactivation', 'Var', (18, 30)) ('paragangliomas', 'Disease', 'MESH:D010235', (206, 220)) ('paragangliomas', 'Phenotype', 'HP:0002668', (206, 220)) ('PHD2', 'Gene', (71, 75)) ('paraganglioma', 'Phenotype', 'HP:0002668', (206, 219)) ('cause', 'Reg', (124, 129)) ('multilineage expansion of the carotid body', 'CPA', (130, 172)) 103170 29917232 In recent work, we have observed that general inactivation of HIF-2alpha, but not HIF-1alpha, ablates the proliferation that occurs within days of exposure to hypoxia in adult mice (Hodson et al. ('rat', 'Species', '10116', (113, 116)) ('mice', 'Species', '10090', (176, 180)) ('inactivation', 'Var', (46, 58)) ('hypoxia', 'Disease', 'MESH:D000860', (159, 166)) ('proliferation', 'CPA', (106, 119)) ('hypoxia', 'Disease', (159, 166)) ('ablates', 'NegReg', (94, 101)) ('HIF-2alpha', 'Gene', (62, 72)) 103177 29917232 HIF-2alpha inactivation in the Type I cells of the CB severely reduced both hypoxia-induced CB proliferation and ventilatory acclimatization to hypoxia. ('hypoxia', 'Disease', (76, 83)) ('reduced', 'NegReg', (63, 70)) ('inactivation', 'Var', (11, 23)) ('hypoxia', 'Disease', (144, 151)) ('hypoxia', 'Disease', 'MESH:D000860', (144, 151)) ('rat', 'Species', '10116', (102, 105)) ('hypoxia', 'Disease', 'MESH:D000860', (76, 83)) ('HIF-2alpha', 'Gene', (0, 10)) 103246 29917232 As expected, hypoxia led to a substantial ~3.5-fold increase in CB size in hypoxic animals (0.0068 +- 0.0005 mm3 vs. 0.0019 +- 0.0004 mm3 in control animals, P < 0.0001). ('hypoxic', 'Var', (75, 82)) ('increase', 'PosReg', (52, 60)) ('hypoxia', 'Disease', (13, 20)) ('hypoxia', 'Disease', 'MESH:D000860', (13, 20)) ('CB size', 'CPA', (64, 71)) 103248 29917232 Morphometric analyses of the CBs of hypoxic animals, using confocal microscopy and anti-TH immunohistochemistry, revealed that essentially all (>99%) of this expanded number of tdTomato+ fluorescent cells manifested Type I cell morphology and/or co-labelled with anti-TH as had been observed in the t = 0 analyses, and as was also observed in CBs from control animals maintained in parallel in air (Fig. ('Type I cell morphology', 'CPA', (216, 238)) ('TH', 'Gene', '21823', (268, 270)) ('manifested', 'Reg', (205, 215)) ('TH', 'Gene', '21823', (88, 90)) ('tdTomato+', 'Var', (177, 186)) 103261 29917232 In previous work, we demonstrated that general inactivation of HIF-2alpha, but not HIF-1alpha, in adult animals ablates the proliferation of cells within the CB that is otherwise observed during a 7 day exposure to 10% oxygen (Hodson et al. ('inactivation', 'Var', (47, 59)) ('HIF-2alpha', 'Gene', (63, 73)) ('rat', 'Species', '10116', (131, 134)) ('ablates', 'NegReg', (112, 119)) ('oxygen', 'Chemical', 'MESH:D010100', (219, 225)) ('proliferation of cells within the CB', 'CPA', (124, 160)) ('rat', 'Species', '10116', (28, 31)) 103272 29917232 2 C and reveal a marked, but incomplete, reduction in BrdU incorporation (1743 +- 162 vs. 2993 +- 153 BrdU+ cells mm-2 in Hif-2alphaf/f;THCreER vs. Hif-2alphaf/f, P = 0.0006). ('BrdU', 'MPA', (54, 58)) ('BrdU', 'Chemical', 'MESH:D001973', (102, 106)) ('Hif-2alpha', 'Gene', (148, 158)) ('Hif-2alpha', 'Gene', '13819', (148, 158)) ('1743 +- 162', 'Var', (74, 85)) ('THCre', 'Chemical', '-', (136, 141)) ('BrdU', 'Chemical', 'MESH:D001973', (54, 58)) ('Hif-2alpha', 'Gene', (122, 132)) ('Hif-2alpha', 'Gene', '13819', (122, 132)) ('rat', 'Species', '10116', (66, 69)) ('reduction', 'NegReg', (41, 50)) 103278 29917232 2 D), as well as CB volume (0.0022 +- 0.0003 mm3 vs. 0.0068 +- 0.0003 mm3 in hypoxic Hif-2alphaf/f;tdTomatof/+;THCreER vs. tdTomatof/+;THCreER controls, P < 0.0001), that significantly impairs the hypoxic expansion observed in Fig. ('0.0022 +- 0.0003 mm3', 'Var', (28, 48)) ('Hif-2alpha', 'Gene', '13819', (85, 95)) ('impairs', 'NegReg', (185, 192)) ('Hif-2alpha', 'Gene', (85, 95)) ('THCre', 'Chemical', '-', (111, 116)) ('hypoxic expansion', 'MPA', (197, 214)) ('THCre', 'Chemical', '-', (135, 140)) 103284 29917232 To assess whether the proliferation of this population of cells is also affected by the loss of HIF-2alpha in Type I cells, we assessed the colocalization of BrdU and endomucin in CBs from hypoxic Hif-2alphaf/f;THCreER mice and controls. ('THCre', 'Chemical', '-', (211, 216)) ('mice', 'Species', '10090', (219, 223)) ('Hif-2alpha', 'Gene', (197, 207)) ('Hif-2alpha', 'Gene', '13819', (197, 207)) ('BrdU', 'Chemical', 'MESH:D001973', (158, 162)) ('rat', 'Species', '10116', (29, 32)) ('loss', 'Var', (88, 92)) ('colocalization', 'MPA', (140, 154)) 103292 29917232 Taken together, this suggests a role for HIF-2alpha in the acute hypoxic ventilatory response, with the varying levels of residual HVR following inactivation of HIF-2alpha perhaps reflecting the degree to which there is residual Hif-2alpha mRNA/incomplete recombination. ('Hif-2alpha', 'Gene', '13819', (229, 239)) ('HIF-2alpha', 'Gene', (161, 171)) ('Hif-2alpha', 'Gene', (229, 239)) ('inactivation', 'Var', (145, 157)) ('residual HVR', 'MPA', (122, 134)) 103295 29917232 However, given that both functional changes and proliferative responses to 7 days of chronic hypoxia within the Type I cells of the CB appeared to be dependent on the high levels of HIF-2alpha in these cells, we next aimed to determine whether inactivation of HIF-2alpha affected the integrity of Type I cells as well as their number. ('chronic hypoxia', 'Disease', (85, 100)) ('inactivation', 'Var', (244, 256)) ('affected', 'Reg', (271, 279)) ('integrity', 'CPA', (284, 293)) ('HIF-2alpha', 'Gene', (260, 270)) ('to 7', 'Species', '1214577', (72, 76)) ('chronic hypoxia', 'Disease', 'MESH:D000860', (85, 100)) ('rat', 'Species', '10116', (55, 58)) 103306 29917232 Taken the findings reported above into consideration, this led us to investigate the possibility that inactivation of PHD2 within the Type I cells of the CB alone would be sufficient to drive enlargement of the CB. ('enlargement', 'PosReg', (192, 203)) ('inactivation', 'Var', (102, 114)) ('rat', 'Species', '10116', (46, 49)) ('PHD2', 'Gene', (118, 122)) 103319 29917232 These experiments indicate that inactivation of PHD2 within the Type I cells of the CB is sufficient to drive the generation of greatly enlarged CBs similar to, but greater than, the enlargement observed following chronic hypoxia (Fig. ('rat', 'Species', '10116', (118, 121)) ('CBs', 'MPA', (145, 148)) ('chronic hypoxia', 'Disease', 'MESH:D000860', (214, 229)) ('inactivation', 'Var', (32, 44)) ('chronic hypoxia', 'Disease', (214, 229)) ('PHD2', 'Gene', (48, 52)) 103326 29917232 Accordingly, Phd2f/f;Hif-1alphaf/f;THCre and Phd2f/f;Hif-2alphaf/f;THCre intercrosses were bred to generate animals with combined inactivation of PHD2 and HIF-1alpha or HIF-2alpha. ('Phd2', 'Gene', (13, 17)) ('PHD2', 'Gene', (146, 150)) ('rat', 'Species', '10116', (103, 106)) ('Phd2', 'Gene', (45, 49)) ('inactivation', 'Var', (130, 142)) ('Hif-2alpha', 'Gene', '13819', (53, 63)) ('Hif-1alpha', 'Gene', '15251', (21, 31)) ('THCre', 'Chemical', '-', (67, 72)) ('Phd2', 'Gene', '112405', (13, 17)) ('Hif-2alpha', 'Gene', (53, 63)) ('Hif-1alpha', 'Gene', (21, 31)) ('Phd2', 'Gene', '112405', (45, 49)) ('HIF-1alpha or HIF-2alpha', 'Disease', (155, 179)) ('HIF-1alpha or HIF-2alpha', 'Disease', 'None', (155, 179)) ('THCre', 'Chemical', '-', (35, 40)) 103329 29917232 Moreover, these experiments revealed a minor decrease in hyperplasia when inactivation of PHD2 was combined with HIF-1alpha, whereas some aspects of the phenotype, such as Type I cellular clearing and vascular expansion, appeared to be exacerbated (Fig. ('PHD2', 'Gene', (90, 94)) ('hyperplasia', 'Disease', (57, 68)) ('inactivation', 'Var', (74, 86)) ('exacerbated', 'PosReg', (236, 247)) ('vascular expansion', 'CPA', (201, 219)) ('decrease', 'NegReg', (45, 53)) ('hyperplasia', 'Disease', 'MESH:D006965', (57, 68)) ('Type I cellular clearing', 'CPA', (172, 196)) 103331 29917232 By contrast, combined inactivation of PHD2 with HIF-2alpha resulted in atrophic CBs in which Type I cell TH staining was almost absent and there was little or no vascular development (Fig. ('inactivation', 'Var', (22, 34)) ('atrophic CBs', 'Disease', 'MESH:D020966', (71, 83)) ('TH', 'Gene', '21823', (105, 107)) ('absent', 'NegReg', (128, 134)) ('PHD2', 'Gene', (38, 42)) ('combined', 'Interaction', (13, 21)) ('atrophic CBs', 'Disease', (71, 83)) ('vascular development', 'CPA', (162, 182)) 103339 29917232 Second, we show that inactivation of the principal HIF prolyl hydroxylase PHD2, specifically within the Type I cells of the CB, is sufficient to drive multilineage hyperplasia and hypertrophy of the CB. ('multilineage hyperplasia', 'Disease', (151, 175)) ('inactivation', 'Var', (21, 33)) ('PHD2', 'Gene', (74, 78)) ('hypertrophy', 'Disease', (180, 191)) ('multilineage hyperplasia', 'Disease', 'MESH:D006965', (151, 175)) ('hypertrophy', 'Disease', 'MESH:D006984', (180, 191)) ('drive', 'PosReg', (145, 150)) 103350 29917232 Consistent with this, inactivation of PHD2 to create a 'pseudohypoxic' state specifically within Type I cells was sufficient to create hyperplasia of the CBs that resembles, but appears greater than (~7-fold vs. 3- to 4-fold), that observed following chronic hypoxic exposure (Laidler & Kay, 1975; Dhillon et al. ('inactivation', 'Var', (22, 34)) ('CBs', 'CPA', (154, 157)) ('hyperplasia', 'Disease', (135, 146)) ('create', 'Reg', (128, 134)) ('PHD2', 'Gene', (38, 42)) ('hyperplasia', 'Disease', 'MESH:D006965', (135, 146)) 103354 29917232 The enlarged CBs associated with Type I cell restricted PHD2 inactivation also manifest several features that are reminiscent of human paraganglioma (Ashley & Evans, 1966; Robertson & Cooney, 1980; Kliewer et al. ('inactivation', 'Var', (61, 73)) ('human paraganglioma', 'Disease', (129, 148)) ('paraganglioma', 'Phenotype', 'HP:0002668', (135, 148)) ('human paraganglioma', 'Disease', 'MESH:D010235', (129, 148)) ('PHD2', 'Gene', (56, 60)) 103358 29917232 Thus, inactivation of PHD2 in a TH positive Type I cell population mimicked many of the effects of chronic exposure to hypoxia, with some abnormalities being more marked in the genetic condition perhaps because this 'pseudohypoxic' condition cannot be compensated for by increases in oxygen delivery. ('oxygen', 'Chemical', 'MESH:D010100', (284, 290)) ('hypoxia', 'Disease', 'MESH:D000860', (119, 126)) ('inactivation', 'Var', (6, 18)) ('TH', 'Gene', '21823', (32, 34)) ('hypoxia', 'Disease', (119, 126)) ('PHD2', 'Gene', (22, 26)) 103359 29917232 Interestingly, these results contrast with studies of VHL inactivation in Type I cells, which led to an almost total failure of CB development (Macias et al. ('Macias', 'Disease', 'MESH:C538388', (144, 150)) ('inactivation', 'Var', (58, 70)) ('CB development', 'CPA', (128, 142)) ('Macias', 'Disease', (144, 150)) 103361 29917232 Activation of a stabilized form of HIF-2alpha by expression of THCre has previously been shown to result in an expanded Type I cell population (Macias et al. ('Macias', 'Disease', 'MESH:C538388', (144, 150)) ('expanded', 'PosReg', (111, 119)) ('THCre', 'Gene', (63, 68)) ('THCre', 'Chemical', '-', (63, 68)) ('expression', 'Var', (49, 59)) ('Macias', 'Disease', (144, 150)) 103362 29917232 In the present study, combined inactivation of HIF-2alpha with PHD2 using the same THCre transgene entirely prevented CB overgrowth and led to a vestigial organ in which the Type I cells and associated vascular expansion were essentially absent. ('vestigial organ', 'CPA', (145, 160)) ('vascular expansion', 'CPA', (202, 220)) ('inactivation', 'Var', (31, 43)) ('overgrowth', 'Phenotype', 'HP:0001548', (121, 131)) ('absent', 'NegReg', (238, 244)) ('HIF-2alpha', 'Gene', (47, 57)) ('prevented', 'NegReg', (108, 117)) ('combined inactivation', 'Var', (22, 43)) ('CB overgrowth', 'CPA', (118, 131)) ('led to', 'Reg', (136, 142)) ('THCre', 'Chemical', '-', (83, 88)) 103363 29917232 Another report published when the manuscript of the present study was under review demonstrated that inactivation of HIF-2alpha under THCre also prevents CB development (Macias et al. ('HIF-2alpha', 'Protein', (117, 127)) ('CB development', 'CPA', (154, 168)) ('THCre', 'Chemical', '-', (134, 139)) ('inactivation', 'Var', (101, 113)) ('Macias', 'Disease', (170, 176)) ('Macias', 'Disease', 'MESH:C538388', (170, 176)) ('prevents', 'NegReg', (145, 153)) ('rat', 'Species', '10116', (90, 93)) 103367 29917232 Although some reduction in carotid overgrowth was observed in HIF-1alpha/PHD2 vs. PHD2 conditionally inactivated mice, the 'clear cell' phenotype appeared to be exaggerated in HIF-1alpha/PHD2 conditionally inactivated mice. ("'clear cell' phenotype", 'CPA', (123, 145)) ('HIF-1alpha/PHD2', 'Var', (62, 77)) ('exaggerated', 'PosReg', (161, 172)) ('rat', 'Species', '10116', (167, 170)) ('overgrowth', 'Phenotype', 'HP:0001548', (35, 45)) ('mice', 'Species', '10090', (218, 222)) ('carotid overgrowth', 'CPA', (27, 45)) ('mice', 'Species', '10090', (113, 117)) ('reduction', 'NegReg', (14, 23)) 103368 29917232 Interestingly, somatic gain-of-function mutations in HIF-2alpha but not HIF-1alpha have been described in human paraganglioma (Toledo, 2017), including cases of Pacak-Zhuang syndrome, in which affected individuals manifest paraganglioma, as well as duodenal somatostatinoma and polycythaemia (Zhuang et al. ('somatostatinoma and polycythaemia', 'Disease', 'MESH:D013005', (258, 291)) ('paraganglioma', 'Disease', (112, 125)) ('human paraganglioma', 'Disease', (106, 125)) ('gain-of-function', 'PosReg', (23, 39)) ('HIF-2alpha', 'Gene', (53, 63)) ('paraganglioma', 'Phenotype', 'HP:0002668', (223, 236)) ('mutations', 'Var', (40, 49)) ('Pacak-Zhuang syndrome', 'Disease', (161, 182)) ('paraganglioma', 'Disease', (223, 236)) ('paraganglioma', 'Disease', 'MESH:D010235', (112, 125)) ('human paraganglioma', 'Disease', 'MESH:D010235', (106, 125)) ('paraganglioma', 'Disease', 'MESH:D010235', (223, 236)) ('paraganglioma', 'Phenotype', 'HP:0002668', (112, 125)) 103371 29917232 Interestingly, however, electron microscopy studies revealed that inactivation of HIF-2alpha prevented hypoxia-induced changes in both DCV number and appearance. ('DCV number', 'MPA', (135, 145)) ('prevented', 'NegReg', (93, 102)) ('inactivation', 'Var', (66, 78)) ('HIF-2alpha', 'Gene', (82, 92)) ('hypoxia', 'Disease', (103, 110)) ('appearance', 'MPA', (150, 160)) ('hypoxia', 'Disease', 'MESH:D000860', (103, 110)) 103374 29917232 Interestingly, it has been reported that blockade of calcium-induced exocytosis impairs cell proliferation within the CB (Platero-Luengo et al. ('calcium', 'Chemical', 'MESH:D002118', (53, 60)) ('cell proliferation within the CB', 'CPA', (88, 120)) ('blockade', 'Var', (41, 49)) ('calcium-induced exocytosis', 'MPA', (53, 79)) ('rat', 'Species', '10116', (100, 103)) ('impairs', 'NegReg', (80, 87)) 103375 29917232 2014), raising the possibility of a link between the roles of HIF-2alpha inactivation in Type I cell function and proliferation. ('rat', 'Species', '10116', (121, 124)) ('HIF-2alpha', 'Gene', (62, 72)) ('Type I cell function', 'CPA', (89, 109)) ('inactivation', 'Var', (73, 85)) 103379 29917232 The generation of a HIF-2alpha-dependent paraganglioma-like phenotype following inactivation of PHD2 provides a model for study of the pathogenesis of these tumours and may provide insights into the role of these pathways in promoting tumour growth in other settings. ('rat', 'Species', '10116', (8, 11)) ('tumour', 'Phenotype', 'HP:0002664', (157, 163)) ('paraganglioma', 'Phenotype', 'HP:0002668', (41, 54)) ('tumours', 'Phenotype', 'HP:0002664', (157, 164)) ('tumours', 'Disease', 'MESH:D009369', (157, 164)) ('paraganglioma', 'Disease', (41, 54)) ('paraganglioma', 'Disease', 'MESH:D010235', (41, 54)) ('tumour growth', 'Disease', (235, 248)) ('tumours', 'Disease', (157, 164)) ('inactivation', 'Var', (80, 92)) ('tumour', 'Phenotype', 'HP:0002664', (235, 241)) ('PHD2', 'Gene', (96, 100)) ('tumour growth', 'Disease', 'MESH:D006130', (235, 248)) 103407 29589383 Another study has shown that deletion of the gene responsible for the production of dopamine beta-hydroxylase, an enzyme required for the synthesis of catecholamines, causes a high bone mass phenotype in 6-month-old mice. ('deletion', 'Var', (29, 37)) ('dopamine beta-hydroxylase', 'Gene', (84, 109)) ('mice', 'Species', '10090', (216, 220)) ('dopamine beta-hydroxylase', 'Gene', '13166', (84, 109)) ('catecholamines', 'Chemical', 'MESH:D002395', (151, 165)) ('high bone mass phenotype', 'CPA', (176, 200)) ('causes', 'Reg', (167, 173)) 103444 29589383 Consequently, in spite of the possible detrimental effects of aldosterone excess on human bone metabolism, there are discrepancies between fracture risk and bone mass in patients with and without PA, raising the possibility that aldosterone excess may mainly affect bone quality, another important component of bone strength, besides bone mass. ('patients', 'Species', '9606', (170, 178)) ('fracture', 'Disease', (139, 147)) ('aldosterone', 'Chemical', 'MESH:D000450', (229, 240)) ('bone quality', 'CPA', (266, 278)) ('affect', 'Reg', (259, 265)) ('aldosterone excess', 'Phenotype', 'HP:0000859', (229, 247)) ('aldosterone', 'Var', (229, 240)) ('fracture', 'Disease', 'MESH:D050723', (139, 147)) ('aldosterone', 'Chemical', 'MESH:D000450', (62, 73)) ('human', 'Species', '9606', (84, 89)) ('PA', 'Phenotype', 'HP:0011736', (196, 198)) ('men', 'Species', '9606', (44, 47)) ('aldosterone excess', 'Phenotype', 'HP:0000859', (62, 80)) 103462 29589383 Third, a genome-wide association study showed that genes belonging to mineralocorticoid pathways were strongly associated with phenotypes of bone strength, supporting the potential cross-talk between aldosterone and bone. ('genes', 'Var', (51, 56)) ('associated', 'Reg', (111, 121)) ('aldosterone', 'Chemical', 'MESH:D000450', (200, 211)) ('bone strength', 'CPA', (141, 154)) 103479 28746746 PHEO and PGL (PPGL) can occur sporadically or as inherited genetic syndromes, primarily multiple endocrine neoplasia type 2 (MEN2), von Hippel-Lindau (VHL) disease, neurofibromatosis type 1 (NF1), and mutations in succinate dehydrogenase subunits (SDHx). ('mutations', 'Var', (201, 210)) ('PGL', 'Disease', (9, 12)) ('neurofibromatosis type 1', 'Gene', '4763', (165, 189)) ('NF1', 'Gene', (191, 194)) ('endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (97, 123)) ('von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (132, 163)) ('genetic syndromes', 'Disease', (59, 76)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (97, 116)) ('NF1', 'Gene', '4763', (191, 194)) ('genetic syndromes', 'Disease', 'MESH:D030342', (59, 76)) ('neurofibromatosis type 1', 'Gene', (165, 189)) ('neoplasia', 'Phenotype', 'HP:0002664', (107, 116)) ('SDHx', 'Gene', (248, 252)) ('PHEO', 'Disease', (0, 4)) ('endocrine neoplasia type 2', 'Disease', (97, 123)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (165, 182)) 103504 28746746 In 3 studies, absence of SDHB mutation was confirmed by genetic testing in all patients with metastatic PPGL. ('metastatic PPGL', 'Disease', (93, 108)) ('mutation', 'Var', (30, 38)) ('SDHB', 'Gene', '6390', (25, 29)) ('patients', 'Species', '9606', (79, 87)) ('SDHB', 'Gene', (25, 29)) 103505 28746746 In the other 5 studies, SDHB-negative patients were those who a) tested negative for SDHB mutation, b) tested positive for other mutations, c) met clinical criteria for NF1, or d) did not undergo genetic testing. ('NF1', 'Gene', (169, 172)) ('SDHB', 'Gene', (24, 28)) ('NF1', 'Gene', '4763', (169, 172)) ('SDHB', 'Gene', '6390', (24, 28)) ('positive', 'Reg', (110, 118)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('negative', 'NegReg', (72, 80)) ('patients', 'Species', '9606', (38, 46)) ('mutation', 'Var', (90, 98)) 103506 28746746 Of 484 patients reported in these studies, 172 (35.5%) patients with metastatic PPGL had a SDHB mutation. ('SDHB', 'Gene', '6390', (91, 95)) ('mutation', 'Var', (96, 104)) ('SDHB', 'Gene', (91, 95)) ('patients', 'Species', '9606', (55, 63)) ('patients', 'Species', '9606', (7, 15)) 103516 28746746 In patients with a SDHB mutation, mean tumour size was 6.4+-0.4 cm; and in SDHB-negative patients, mean tumour size was 7.7+-0.4 cm. ('SDHB', 'Gene', '6390', (19, 23)) ('tumour', 'Disease', (39, 45)) ('SDHB', 'Gene', '6390', (75, 79)) ('tumour', 'Phenotype', 'HP:0002664', (104, 110)) ('SDHB', 'Gene', (19, 23)) ('tumour', 'Disease', 'MESH:D009369', (104, 110)) ('patients', 'Species', '9606', (3, 11)) ('patients', 'Species', '9606', (89, 97)) ('mutation', 'Var', (24, 32)) ('SDHB', 'Gene', (75, 79)) ('tumour', 'Phenotype', 'HP:0002664', (39, 45)) ('tumour', 'Disease', 'MESH:D009369', (39, 45)) ('tumour', 'Disease', (104, 110)) 103519 28746746 Overall, 5- and 10-year mortality rates of patients with metastatic PPGL ranged 43%-63% (11 studies; n=1047), 24%-51% (7 studies; n=738), and 17-42% (2 studies; n=55), respectively. ('patients', 'Species', '9606', (43, 51)) ('PPGL', 'Gene', (68, 72)) ('metastatic', 'Var', (57, 67)) 103526 28746746 Over a third of the patients had a SDHB germline mutation and were younger at primary tumour diagnosis, compared with SDHB-negative patients. ('SDHB', 'Gene', '6390', (118, 122)) ('SDHB', 'Gene', (35, 39)) ('tumour', 'Phenotype', 'HP:0002664', (86, 92)) ('SDHB', 'Gene', (118, 122)) ('germline mutation', 'Var', (40, 57)) ('primary tumour', 'Disease', (78, 92)) ('patients', 'Species', '9606', (20, 28)) ('primary tumour', 'Disease', 'MESH:D009369', (78, 92)) ('patients', 'Species', '9606', (132, 140)) ('SDHB', 'Gene', '6390', (35, 39)) 103532 28746746 SDHB mutations are thought to be highly associated with metastatic PPGL, with rates of developing metastases up to 50%- 90% in some studies. ('metastatic PPGL', 'Disease', (56, 71)) ('mutations', 'Var', (5, 14)) ('metastases', 'Disease', (98, 108)) ('SDHB', 'Gene', '6390', (0, 4)) ('metastases', 'Disease', 'MESH:D009362', (98, 108)) ('SDHB', 'Gene', (0, 4)) ('associated', 'Reg', (40, 50)) 103533 28746746 Previous studies have also reported that SDHB mutation was associated with shorter survival rates than other PPGL types. ('SDHB', 'Gene', (41, 45)) ('SDHB', 'Gene', '6390', (41, 45)) ('shorter', 'NegReg', (75, 82)) ('mutation', 'Var', (46, 54)) ('survival rates', 'CPA', (83, 97)) 103534 28746746 Although we were not able to analyse the risk of mortality in patients with SDHB mutations, overall mortality of this cohort was 45%. ('SDHB', 'Gene', '6390', (76, 80)) ('patients', 'Species', '9606', (62, 70)) ('SDHB', 'Gene', (76, 80)) ('mutations', 'Var', (81, 90)) 103586 29410889 Final histopathological analysis confirmed a non- malignant type of paraganglioma with cells positive for synaptophysin, chromogranin, CD56 and S100 on immunohistochemistry (Figure 6) with tumour free margins. ('paraganglioma', 'Disease', 'MESH:D010235', (68, 81)) ('paraganglioma', 'Phenotype', 'HP:0002668', (68, 81)) ('synaptophysin', 'Gene', (106, 119)) ('tumour', 'Phenotype', 'HP:0002664', (189, 195)) ('non- malignant', 'Disease', (45, 59)) ('CD56', 'Gene', '4684', (135, 139)) ('paraganglioma', 'Disease', (68, 81)) ('tumour', 'Disease', 'MESH:D009369', (189, 195)) ('synaptophysin', 'Gene', '6855', (106, 119)) ('CD56', 'Gene', (135, 139)) ('tumour', 'Disease', (189, 195)) ('S100', 'Var', (144, 148)) 103625 27804217 Hereditary cases in older patients are associated with the RET and NF1 mutations, whereas younger patients often have germline mutations of SDH and related genes and the VHL gene. ('SDH', 'Gene', '6390', (140, 143)) ('RET', 'Gene', '5979', (59, 62)) ('NF1', 'Gene', (67, 70)) ('NF1', 'Gene', '4763', (67, 70)) ('SDH', 'Gene', (140, 143)) ('patients', 'Species', '9606', (98, 106)) ('patients', 'Species', '9606', (26, 34)) ('RET', 'Gene', (59, 62)) ('mutations', 'Var', (71, 80)) ('associated', 'Reg', (39, 49)) ('VHL', 'Disease', (170, 173)) ('VHL', 'Disease', 'MESH:D006623', (170, 173)) 103628 27804217 Only 16 patients had malignant disease at diagnosis or follow-up, with SDHB mutations being most common (37.5%). ('mutations', 'Var', (76, 85)) ('SDHB', 'Gene', '6390', (71, 75)) ('common', 'Reg', (97, 103)) ('malignant disease', 'Disease', 'MESH:D009369', (21, 38)) ('SDHB', 'Gene', (71, 75)) ('malignant disease', 'Disease', (21, 38)) ('patients', 'Species', '9606', (8, 16)) 103639 27804217 Germline exome sequencing (Ambry Genetics, CA) showed no mutations or large rearrangements in p53 or mutations in the paraganglioma-related genes MAX, NF1, RET, SDHA, B, C and D, SDHAF2, TMEM127 and VHL. ('paraganglioma', 'Disease', (118, 131)) ('SDHA, B, C and D', 'Gene', '6389', (161, 177)) ('mutations', 'Var', (101, 110)) ('p53', 'Gene', (94, 97)) ('p53', 'Gene', '7157', (94, 97)) ('SDHAF2', 'Gene', '54949', (179, 185)) ('SDHAF2', 'Gene', (179, 185)) ('TMEM127', 'Gene', (187, 194)) ('MAX', 'Gene', (146, 149)) ('VHL', 'Disease', 'MESH:D006623', (199, 202)) ('TMEM127', 'Gene', '55654', (187, 194)) ('RET', 'Gene', '5979', (156, 159)) ('VHL', 'Disease', (199, 202)) ('NF1', 'Gene', (151, 154)) ('paraganglioma', 'Disease', 'MESH:D010235', (118, 131)) ('NF1', 'Gene', '4763', (151, 154)) ('paraganglioma', 'Phenotype', 'HP:0002668', (118, 131)) ('RET', 'Gene', (156, 159)) 103642 27804217 In an effort to shrink the tumor and relieve ureteral blockage, he was treated with two non-myeloablative doses of intravenous (IV) 131I-MIBG (12mCi/kg and 3mCi/kg at 4 and 7 months post-diagnosis respectively) without any response in primary or metastatic sites. ('131I-MIBG', 'Var', (132, 141)) ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('ureteral blockage', 'MPA', (45, 62)) ('tumor', 'Disease', (27, 32)) ('131I-MIBG', 'Chemical', '-', (132, 141)) ('tumor', 'Disease', 'MESH:D009369', (27, 32)) 103645 27804217 Thirty months after diagnosis of PGL and 7 months after completing therapy, he developed persistent asymptomatic thrombocytopenia. ('thrombocytopenia', 'Phenotype', 'HP:0001873', (113, 129)) ('PGL', 'Var', (33, 36)) ('thrombocytopenia', 'Disease', (113, 129)) ('thrombocytopenia', 'Disease', 'MESH:D013921', (113, 129)) 103646 27804217 Bone marrow (BM) testing showed AML (20% blasts) with M4 morphology, flow cytometry was positive for CD33, CD34, CD45 and CD117. ('CD34', 'Var', (107, 111)) ('CD45', 'Var', (113, 117)) ('CD34', 'Species', '1151260', (107, 111)) ('AML', 'Disease', 'MESH:D015470', (32, 35)) ('CD33', 'Var', (101, 105)) ('AML', 'Disease', (32, 35)) ('CD45', 'Species', '1151268', (113, 117)) ('CD117', 'Var', (122, 127)) ('positive', 'Reg', (88, 96)) 103647 27804217 Karyotyping revealed t(8;21) and FISH confirmed translocation of AML-ETO. ('AML', 'Disease', (65, 68)) ('translocation', 'MPA', (48, 61)) ('t(8;21', 'Var', (21, 27)) ('AML', 'Disease', 'MESH:D015470', (65, 68)) 103662 27804217 SDHB-mutation-associated PHEO/PGLs are globally hypermethylated and methylation-induced silencing of the MGMT (O(6)-methylguanine-DNA methyltransferase) promoter might render them more susceptible to DNA alkylating agents such as dacarbazine and its orally active analog temozolomide. ('methylation-induced', 'Var', (68, 87)) ('temozolomide', 'Chemical', 'MESH:D000077204', (271, 283)) ('render', 'Reg', (168, 174)) ('silencing', 'NegReg', (88, 97)) ('MGMT', 'Gene', '4255', (105, 109)) ('MGMT', 'Gene', (105, 109)) ('susceptible', 'MPA', (185, 196)) ('SDHB', 'Gene', '6390', (0, 4)) ('dacarbazine', 'Chemical', 'MESH:D003606', (230, 241)) ('more', 'PosReg', (180, 184)) ('SDHB', 'Gene', (0, 4)) ('O(6)-methylguanine-DNA methyltransferase', 'Gene', '4255', (111, 151)) 103665 27804217 Despite reported responses to chemotherapy, patients with germline SDHB mutations have been reported to have a poor clinical outcome. ('SDHB', 'Gene', (67, 71)) ('mutations', 'Var', (72, 81)) ('patients', 'Species', '9606', (44, 52)) ('SDHB', 'Gene', '6390', (67, 71)) 103674 27804217 The presence of t(8;21) is usually associated with de novo AML and rarely with secondary AML. ('AML', 'Disease', 'MESH:D015470', (89, 92)) ('associated', 'Reg', (35, 45)) ('t(8;21', 'Gene', (16, 22)) ('AML', 'Disease', 'MESH:D015470', (59, 62)) ('AML', 'Disease', (89, 92)) ('presence', 'Var', (4, 12)) ('AML', 'Disease', (59, 62)) 103722 27603405 Among the Chinese population, risk-conferring genetic variants of the angiotensin II type 1 receptor gene for diastolic heart failure were found, which were previously identified. ('diastolic heart failure', 'Disease', 'MESH:D054144', (110, 133)) ('diastolic heart failure', 'Disease', (110, 133)) ('angiotensin II type 1 receptor', 'Gene', (70, 100)) ('heart failure', 'Phenotype', 'HP:0001635', (120, 133)) ('angiotensin II type 1 receptor', 'Gene', '185', (70, 100)) ('genetic variants', 'Var', (46, 62)) ('risk-conferring', 'Reg', (30, 45)) 103766 26254120 Von Hippel-Lindau disease occurs as the result of a mutation in the VHL gene located on chromosome 3p25-26, which encodes pVHL, a protein located in the cytoplasm and endoplasmic reticulum and required for ciliogenesis. ('VHL', 'Disease', (123, 126)) ('occurs', 'Reg', (26, 32)) ('VHL', 'Disease', (68, 71)) ('VHL', 'Disease', 'MESH:D006623', (123, 126)) ('VHL', 'Disease', 'MESH:D006623', (68, 71)) ('Von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (0, 25)) ('result of', 'Reg', (40, 49)) ('Von Hippel-Lindau disease', 'Disease', (0, 25)) ('mutation', 'Var', (52, 60)) ('pVHL', 'Gene', '7428', (122, 126)) ('pVHL', 'Gene', (122, 126)) 103814 26347711 Recently, additional mutations in the succinate dehydrogenase (SDH) complex subunits, SDHA, SDHB, SDHC, SDHD, and SDHFA2, related to familial PCC-PGL and novel susceptibility genes, such as KIF1Bbeta, EGLN1, TMEM127, and MAX, have led to the diagnosis of new phenotypes. ('familial PCC-PGL', 'Disease', 'MESH:D010235', (133, 149)) ('familial PCC-PGL', 'Disease', (133, 149)) ('SDHC', 'Gene', '6391', (98, 102)) ('EGLN1', 'Gene', '54583', (201, 206)) ('TMEM127', 'Gene', (208, 215)) ('MAX', 'Gene', '4149', (221, 224)) ('SDHD', 'Gene', (104, 108)) ('EGLN1', 'Gene', (201, 206)) ('SDHB', 'Gene', '6390', (92, 96)) ('TMEM127', 'Gene', '55654', (208, 215)) ('succinate', 'Chemical', 'MESH:D019802', (38, 47)) ('SDHC', 'Gene', (98, 102)) ('SDHFA2', 'Gene', (114, 120)) ('SDH', 'Gene', (63, 66)) ('related', 'Reg', (122, 129)) ('SDHB', 'Gene', (92, 96)) ('MAX', 'Gene', (221, 224)) ('SDHA', 'Gene', (86, 90)) ('mutations', 'Var', (21, 30)) ('SDHA', 'Gene', '6389', (86, 90)) ('SDHD', 'Gene', '6392', (104, 108)) 103825 26347711 MEN2 types carry approximately 100% risk for MTC and at 50% risk for PCC. ('PCC', 'Gene', '1421', (69, 72)) ('MTC', 'Phenotype', 'HP:0002865', (45, 48)) ('MEN', 'Species', '9606', (0, 3)) ('MTC', 'Disease', (45, 48)) ('PCC', 'Gene', (69, 72)) ('MEN2', 'Var', (0, 4)) 103829 26347711 In this way, positive results for a specific RET mutation can influence the management of an apparently sporadic MTC. ('RET', 'Gene', '5979', (45, 48)) ('management', 'Disease', (76, 86)) ('mutation', 'Var', (49, 57)) ('RET', 'Gene', (45, 48)) ('MTC', 'Phenotype', 'HP:0002865', (113, 116)) ('influence', 'Reg', (62, 71)) ('men', 'Species', '9606', (82, 85)) 103832 26347711 Mutation in codons 618, 620, and 634 of RET is representative of MEN2A in approximately 80% of patients. ('RET', 'Gene', (40, 43)) ('patients', 'Species', '9606', (95, 103)) ('MEN2A', 'Gene', (65, 70)) ('MEN2A', 'Gene', '5979', (65, 70)) ('RET', 'Gene', '5979', (40, 43)) ('Mutation in codons', 'Var', (0, 18)) 103833 26347711 A single missense mutation in codon 918 is found in nearly 90% of MEN2B cases. ('MEN2B', 'Gene', (66, 71)) ('missense mutation in', 'Var', (9, 29)) ('MEN2B', 'Gene', '5979', (66, 71)) 103835 26347711 One group has reported a high penetrance of PCCs, especially bilateral and large tumors, associated with a double C634/Y719F germ-line mutation in the RET protooncogene. ('associated', 'Reg', (89, 99)) ('tumors', 'Disease', (81, 87)) ('tumors', 'Disease', 'MESH:D009369', (81, 87)) ('PCCs', 'Phenotype', 'HP:0002666', (44, 48)) ('PCC', 'Gene', (44, 47)) ('double C634/Y719F', 'Var', (107, 124)) ('RET', 'Gene', (151, 154)) ('bilateral', 'Disease', (61, 70)) ('Y719F', 'Mutation', 'p.Y719F', (119, 124)) ('tumors', 'Phenotype', 'HP:0002664', (81, 87)) ('PCC', 'Gene', '1421', (44, 47)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('large', 'Disease', (75, 80)) ('RET', 'Gene', '5979', (151, 154)) 103836 26347711 Von Hippel-Lindau syndrome is an autosomal dominant disease associated with inactivating mutations in the VHL tumor suppressor gene located on chromosome 3. ('VHL tumor', 'Disease', (106, 115)) ('autosomal dominant disease', 'Disease', (33, 59)) ('inactivating mutations', 'Var', (76, 98)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('VHL tumor', 'Disease', 'MESH:D006623', (106, 115)) ('autosomal dominant disease', 'Disease', 'MESH:D030342', (33, 59)) ('Von Hippel-Lindau syndrome', 'Disease', (0, 26)) ('Von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (0, 26)) ('associated', 'Reg', (60, 70)) 103840 26347711 VHL mutations result in unilateral or bilateral PCCs and rarely in PGLs. ('PGLs', 'Phenotype', 'HP:0002668', (67, 71)) ('PCC', 'Gene', '1421', (48, 51)) ('VHL', 'Gene', (0, 3)) ('PCCs', 'Phenotype', 'HP:0002666', (48, 52)) ('PCC', 'Gene', (48, 51)) ('result in', 'Reg', (14, 23)) ('mutations', 'Var', (4, 13)) ('VHL', 'Gene', '7428', (0, 3)) 103845 26347711 The VHL gene comprise three exons, and its mutations are distributed throughout the coding sequence; missense, nonsense, splice-site mutations, micro deletions, and insertions are found in two-thirds of patients, while large deletions are described in only one-third of patients with this syndrome. ('micro deletions', 'Var', (144, 159)) ('patients', 'Species', '9606', (270, 278)) ('insertions', 'Var', (165, 175)) ('missense', 'Var', (101, 109)) ('patients', 'Species', '9606', (203, 211)) ('VHL', 'Gene', (4, 7)) ('VHL', 'Gene', '7428', (4, 7)) ('nonsense', 'Var', (111, 119)) ('found', 'Reg', (180, 185)) 103846 26347711 Deletions, nonsense, and frame shift mutations are regularly found in VHL type 1, whereas missense mutations are more common in VHL type 2. ('VHL', 'Gene', (70, 73)) ('VHL', 'Gene', '7428', (128, 131)) ('VHL', 'Gene', '7428', (70, 73)) ('frame shift mutations', 'Var', (25, 46)) ('nonsense', 'Var', (11, 19)) ('found', 'Reg', (61, 66)) ('missense', 'Var', (90, 98)) ('Deletions', 'Var', (0, 9)) ('VHL', 'Gene', (128, 131)) 103847 26347711 A majority of patients with PCC have missense mutations. ('missense mutations', 'Var', (37, 55)) ('patients', 'Species', '9606', (14, 22)) ('PCC', 'Gene', (28, 31)) ('PCC', 'Gene', '1421', (28, 31)) 103848 26347711 analyzed the genotype-phenotype correlations in 573 individuals with VHL disease and demonstrated that classifying missense substitutions according to their predicted effect on pVHL structure enhances the ability to predict pheochromocytoma risk. ('VHL disease', 'Disease', (69, 80)) ('enhances', 'PosReg', (192, 200)) ('pheochromocytoma', 'Disease', (224, 240)) ('pVHL', 'Gene', (177, 181)) ('VHL disease', 'Disease', 'MESH:D006623', (69, 80)) ('pVHL', 'Gene', '7428', (177, 181)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (224, 240)) ('missense substitutions', 'Var', (115, 137)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (224, 240)) 103849 26347711 Although genetic screening has been able to identify mutations in the majority of patients with VHL disease, some patients (20%) without genetic diagnosis probably develop de novo mutations. ('VHL disease', 'Disease', (96, 107)) ('patients', 'Species', '9606', (82, 90)) ('mutations', 'Var', (53, 62)) ('VHL disease', 'Disease', 'MESH:D006623', (96, 107)) ('patients', 'Species', '9606', (114, 122)) 103858 26347711 NF1 is a tumor suppressor large gene with 60 exons located on chromosome 17 with described missense, nonsense, and splice-site mutations, indels, and chromosomal rearrangements. ('nonsense', 'Var', (101, 109)) ('tumor', 'Disease', 'MESH:D009369', (9, 14)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('tumor', 'Disease', (9, 14)) ('men', 'Species', '9606', (171, 174)) ('NF1', 'Gene', (0, 3)) ('missense', 'Var', (91, 99)) ('NF1', 'Gene', '4763', (0, 3)) 103860 26347711 When this gene is mutated, the cascade including PI3K and mTor is activated, subsequently resulting in uncontrolled cellular growth and differentiation. ('mTor', 'Gene', (58, 62)) ('PI3K', 'Var', (49, 53)) ('mutated', 'Var', (18, 25)) ('mTor', 'Gene', '2475', (58, 62)) ('resulting in', 'Reg', (90, 102)) ('differentiation', 'CPA', (136, 151)) 103863 26347711 In the last decade, the genetics of hereditary PCC/PGLs has started to emerge with the description of germ-line mutations in the SDHx (SDH) genes related to this syndrome. ('related', 'Reg', (146, 153)) ('PCC', 'Gene', (47, 50)) ('SDHx', 'Chemical', '-', (129, 133)) ('mutations', 'Var', (112, 121)) ('PGLs', 'Phenotype', 'HP:0002668', (51, 55)) ('SDH', 'Gene', (135, 138)) ('PCC', 'Gene', '1421', (47, 50)) 103867 26347711 The relations between SDH and PCC/PGLs emerged in the 2000s when germ-line SDHD mutations were associated to the occurrence of PCC/PGLs. ('PCC', 'Gene', (30, 33)) ('mutations', 'Var', (80, 89)) ('PCC', 'Gene', (127, 130)) ('SDHD', 'Gene', '6392', (75, 79)) ('PGLs', 'Phenotype', 'HP:0002668', (34, 38)) ('SDHD', 'Gene', (75, 79)) ('PCC', 'Gene', '1421', (30, 33)) ('associated', 'Reg', (95, 105)) ('PGLs', 'Phenotype', 'HP:0002668', (131, 135)) ('PCC', 'Gene', '1421', (127, 130)) 103869 26347711 SDHD mutations are linked to the development of familial PGLs and PCCs (PGL1), although they have been reported in apparently sporadic tumors; they are often associated with the risk of multiple tumors, especially head and neck PGLs. ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('PGLs', 'Phenotype', 'HP:0002668', (57, 61)) ('PCCs', 'Phenotype', 'HP:0002666', (66, 70)) ('PCC', 'Gene', (66, 69)) ('SDHD', 'Gene', '6392', (0, 4)) ('familial PGLs', 'Disease', (48, 61)) ('linked', 'Reg', (19, 25)) ('multiple tumors', 'Disease', (186, 201)) ('tumors', 'Phenotype', 'HP:0002664', (195, 201)) ('PCC', 'Gene', '1421', (66, 69)) ('men', 'Species', '9606', (40, 43)) ('SDHD', 'Gene', (0, 4)) ('tumor', 'Phenotype', 'HP:0002664', (195, 200)) ('PGLs', 'Phenotype', 'HP:0002668', (228, 232)) ('associated with', 'Reg', (158, 173)) ('mutations', 'Var', (5, 14)) ('multiple tumors', 'Disease', 'MESH:D009369', (186, 201)) ('sporadic tumors', 'Disease', (126, 141)) ('sporadic tumors', 'Disease', 'MESH:D009369', (126, 141)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) 103872 26347711 The PGL2 syndrome is associated with SDHAF2 mutations, also known as SDH5. ('SDH5', 'Gene', '54949', (69, 73)) ('associated', 'Reg', (21, 31)) ('PGL2 syndrome', 'Disease', (4, 17)) ('SDH5', 'Gene', (69, 73)) ('mutations', 'Var', (44, 53)) ('SDHAF2', 'Gene', '54949', (37, 43)) ('SDHAF2', 'Gene', (37, 43)) ('PGL2 syndrome', 'Disease', 'MESH:C566646', (4, 17)) 103873 26347711 The SDHA mutation has been described with Leigh's disease, a severe type of encephalopathy. ('mutation', 'Var', (9, 17)) ("Leigh's disease", 'Disease', (42, 57)) ('SDHA', 'Gene', (4, 8)) ('described', 'Reg', (27, 36)) ('encephalopathy', 'Phenotype', 'HP:0001298', (76, 90)) ('encephalopathy', 'Disease', (76, 90)) ('SDHA', 'Gene', '6389', (4, 8)) ("Leigh's disease", 'Disease', 'MESH:D007888', (42, 57)) ('encephalopathy', 'Disease', 'MESH:D001927', (76, 90)) 103875 26347711 Mutations in SDHAF2 are considered rare; in a study with 443 patients with head and neck PGL evaluated, mutations on the SDHAF2 gene were negative. ('SDHAF2', 'Gene', '54949', (13, 19)) ('mutations', 'Var', (104, 113)) ('SDHAF2', 'Gene', '54949', (121, 127)) ('SDHAF2', 'Gene', (121, 127)) ('patients', 'Species', '9606', (61, 69)) ('Mutations', 'Var', (0, 9)) ('SDHAF2', 'Gene', (13, 19)) 103876 26347711 Mutations in SDHC are implicated in PGL3 syndrome. ('SDHC', 'Gene', (13, 17)) ('SDHC', 'Gene', '6391', (13, 17)) ('implicated', 'Reg', (22, 32)) ('PGL3 syndrome', 'Disease', (36, 49)) ('Mutations', 'Var', (0, 9)) ('PGL3 syndrome', 'Disease', 'MESH:C565335', (36, 49)) 103877 26347711 A mutation in SDHC is less frequent when compared to SDHD mutations; it is usually associated with benign solitary head and neck PGLs. ('mutation', 'Var', (2, 10)) ('PGLs', 'Phenotype', 'HP:0002668', (129, 133)) ('SDHC', 'Gene', (14, 18)) ('SDHD', 'Gene', (53, 57)) ('SDHD', 'Gene', '6392', (53, 57)) ('SDHC', 'Gene', '6391', (14, 18)) ('associated', 'Reg', (83, 93)) 103880 26347711 Mutation in SDHB is implicated in PGL 4 syndrome, characterized mostly by abdominal, pelvic, and thoracic catecholamine-secreting familial PGL. ('pelvic', 'Disease', (85, 91)) ('SDHB', 'Gene', '6390', (12, 16)) ('PGL 4', 'Gene', (34, 39)) ('SDHB', 'Gene', (12, 16)) ('Mutation', 'Var', (0, 8)) ('implicated', 'Reg', (20, 30)) ('PGL 4', 'Gene', '6390', (34, 39)) ('catecholamine', 'Chemical', 'MESH:D002395', (106, 119)) ('abdominal', 'Disease', (74, 83)) 103884 26347711 Furthermore, SDHB mutations may result in susceptibility to other malignant tumors, such as renal cell carcinomas, papillary thyroid tumors, neuroblastoma, or gastrointestinal stromal tumor (GIST). ('renal cell carcinomas', 'Disease', 'MESH:C538614', (92, 113)) ('SDHB', 'Gene', '6390', (13, 17)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (92, 112)) ('renal cell carcinomas', 'Disease', (92, 113)) ('result in susceptibility', 'Reg', (32, 56)) ('carcinoma', 'Phenotype', 'HP:0030731', (103, 112)) ('tumors', 'Phenotype', 'HP:0002664', (133, 139)) ('carcinomas', 'Phenotype', 'HP:0030731', (103, 113)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (92, 113)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) ('SDHB', 'Gene', (13, 17)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (159, 189)) ('malignant tumors', 'Disease', 'MESH:D018198', (66, 82)) ('papillary thyroid tumors', 'Phenotype', 'HP:0002895', (115, 139)) ('neuroblastoma', 'Disease', (141, 154)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (141, 154)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (159, 189)) ('malignant tumors', 'Disease', (66, 82)) ('GIST', 'Phenotype', 'HP:0100723', (191, 195)) ('papillary thyroid tumors', 'Disease', (115, 139)) ('neuroblastoma', 'Disease', 'MESH:D009447', (141, 154)) ('gastrointestinal stromal tumor', 'Disease', (159, 189)) ('tumor', 'Phenotype', 'HP:0002664', (184, 189)) ('papillary thyroid tumors', 'Disease', 'MESH:D000077273', (115, 139)) ('mutations', 'Var', (18, 27)) 103885 26347711 Average 20% of patients with SDHB mutation will present malignant PGLs, and more than 50% of the individuals with malignant PGLs will have a SDHB mutation. ('patients', 'Species', '9606', (15, 23)) ('SDHB', 'Gene', '6390', (29, 33)) ('SDHB', 'Gene', (141, 145)) ('malignant PGLs', 'CPA', (56, 70)) ('SDHB', 'Gene', (29, 33)) ('mutation', 'Var', (34, 42)) ('PGLs', 'Phenotype', 'HP:0002668', (124, 128)) ('PGLs', 'Phenotype', 'HP:0002668', (66, 70)) ('mutation', 'Var', (146, 154)) ('SDHB', 'Gene', '6390', (141, 145)) 103886 26347711 Recently, mutations in this gene and in SDHD and SDHC were described in association with Carney-Stratakis syndrome, an autosomal dominant disorder characterized by PGLs and GIST, but they have not been found in other forms of the Carney triad, suggesting that other genetic alterations may be implicated in this syndrome. ('SDHD', 'Gene', '6392', (40, 44)) ('Carney-Stratakis syndrome', 'Disease', (89, 114)) ('GIST', 'Phenotype', 'HP:0100723', (173, 177)) ('SDHD', 'Gene', (40, 44)) ('SDHC', 'Gene', (49, 53)) ('PGLs', 'Phenotype', 'HP:0002668', (164, 168)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (89, 114)) ('autosomal dominant disorder', 'Disease', 'MESH:D030342', (119, 146)) ('SDHC', 'Gene', '6391', (49, 53)) ('mutations', 'Var', (10, 19)) ('association', 'Reg', (72, 83)) ('autosomal dominant disorder', 'Disease', (119, 146)) 103887 26347711 More efforts are needed to define the risk of other cancers in association with these mutations in order to help clinicians better design a phenotype and genotype correlation in PCC\PGLs and understand the complexity of these diseases. ('mutations', 'Var', (86, 95)) ('cancer', 'Phenotype', 'HP:0002664', (52, 58)) ('cancers', 'Disease', (52, 59)) ('PCC', 'Gene', (178, 181)) ('PGLs', 'Phenotype', 'HP:0002668', (182, 186)) ('cancers', 'Phenotype', 'HP:0002664', (52, 59)) ('PCC', 'Gene', '1421', (178, 181)) ('cancers', 'Disease', 'MESH:D009369', (52, 59)) 103894 26347711 This disease affects equally men and women and the majority of patients present germ-line mutations in SDHB, SDHC, or SDHD supporting another molecular mechanism linked to GIST besides KIT and PDGFRA mutations usually described. ('SDHB', 'Gene', (103, 107)) ('mutations', 'Var', (90, 99)) ('SDHC', 'Gene', '6391', (109, 113)) ('women', 'Species', '9606', (37, 42)) ('SDHD', 'Gene', (118, 122)) ('SDHD', 'Gene', '6392', (118, 122)) ('PDGFRA', 'Gene', '5156', (193, 199)) ('PDGFRA', 'Gene', (193, 199)) ('men', 'Species', '9606', (29, 32)) ('GIST', 'Phenotype', 'HP:0100723', (172, 176)) ('SDHC', 'Gene', (109, 113)) ('patients', 'Species', '9606', (63, 71)) ('men', 'Species', '9606', (39, 42)) ('SDHB', 'Gene', '6390', (103, 107)) 103906 26347711 Mutation in this gene was described in patients with PCC without other predisposing mutations. ('patients', 'Species', '9606', (39, 47)) ('PCC', 'Gene', (53, 56)) ('Mutation', 'Var', (0, 8)) ('PCC', 'Gene', '1421', (53, 56)) ('described', 'Reg', (26, 35)) 103912 26347711 A mutation analysis of 82 patients with inherited PCC did not detect mutations in EGLN1, EGLN2, or EGLN3, suggesting that mutations in these genes are not a frequent cause of inherited PCC. ('PCC', 'Gene', (50, 53)) ('PCC', 'Gene', '1421', (185, 188)) ('EGLN2', 'Gene', (89, 94)) ('EGLN3', 'Gene', '112399', (99, 104)) ('EGLN1', 'Gene', (82, 87)) ('EGLN3', 'Gene', (99, 104)) ('patients', 'Species', '9606', (26, 34)) ('PCC', 'Gene', (185, 188)) ('PCC', 'Gene', '1421', (50, 53)) ('mutations', 'Var', (122, 131)) ('EGLN1', 'Gene', '54583', (82, 87)) ('EGLN2', 'Gene', '112398', (89, 94)) 103915 26347711 The most common clinical presentation of the mutation carriers is quite similar to sporadic PCC patient, single adrenal tumor with mean age of 40 years, although multiple head and neck PGLs and retroperitoneal PGLs have been described. ('adrenal tumor', 'Disease', (112, 125)) ('PCC', 'Gene', (92, 95)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (112, 125)) ('patient', 'Species', '9606', (96, 103)) ('mutation', 'Var', (45, 53)) ('PGLs', 'Phenotype', 'HP:0002668', (210, 214)) ('PGLs', 'Phenotype', 'HP:0002668', (185, 189)) ('tumor', 'Phenotype', 'HP:0002664', (120, 125)) ('PCC', 'Gene', '1421', (92, 95)) ('adrenal tumor', 'Disease', 'MESH:D000310', (112, 125)) 103919 26347711 Whole genome sequencing identified MAX germ-line mutations in familial cases of PCC without alterations in known genes. ('mutations', 'Var', (49, 58)) ('MAX', 'Gene', (35, 38)) ('cases', 'Reg', (71, 76)) ('MAX', 'Gene', '4149', (35, 38)) ('PCC', 'Gene', '1421', (80, 83)) ('PCC', 'Gene', (80, 83)) 103920 26347711 studied 12 PCC patients with MAX mutations; three of the cases were unrelated individuals with hereditary PCC. ('PCC', 'Gene', '1421', (11, 14)) ('PCC', 'Gene', '1421', (106, 109)) ('patients', 'Species', '9606', (15, 23)) ('PCC', 'Gene', (11, 14)) ('PCC', 'Gene', (106, 109)) ('mutations', 'Var', (33, 42)) ('MAX', 'Gene', '4149', (29, 32)) ('MAX', 'Gene', (29, 32)) 103922 26347711 Eight of these patients (67%) had bilateral PCCs, and 25% presented metastasis at diagnosis, suggesting that MAX mutation can be associated to multicentricity and malignant risk. ('mutation', 'Var', (113, 121)) ('associated', 'Reg', (129, 139)) ('patients', 'Species', '9606', (15, 23)) ('PCCs', 'Phenotype', 'HP:0002666', (44, 48)) ('PCC', 'Gene', (44, 47)) ('PCC', 'Gene', '1421', (44, 47)) ('metastasis', 'CPA', (68, 78)) ('MAX', 'Gene', (109, 112)) ('MAX', 'Gene', '4149', (109, 112)) 103924 26347711 In a review by Jimenez et al., the authors provide a compilation of several studies, and the results suggest that 20% of patients with apparently sporadic PCCs have a germ-line mutation of one of the genes known to cause hereditary PCC/PGLs. ('cause', 'Reg', (215, 220)) ('mutation', 'Var', (177, 185)) ('PCC', 'Gene', '1421', (155, 158)) ('patients', 'Species', '9606', (121, 129)) ('PGLs', 'Phenotype', 'HP:0002668', (236, 240)) ('PCC', 'Gene', '1421', (232, 235)) ('PCC', 'Gene', (155, 158)) ('PCCs', 'Phenotype', 'HP:0002666', (155, 159)) ('PCC', 'Gene', (232, 235)) ('men', 'Species', '9606', (17, 20)) 103926 26347711 In one study developed by Neumann et al., it was found that 24% of the patients with apparently non-syndromic pheochromocytomas and no family history of the disease had mutations in VHL, RET, SDHD, and SDHB genes; these patients presented at a younger age (average of 24 years), and they had multiple tumors and 28% extra-adrenal tumors. ('extra-adrenal tumors', 'Disease', (316, 336)) ('multiple tumors', 'Disease', 'MESH:D009369', (292, 307)) ('mutations', 'Var', (169, 178)) ('non-syndromic pheochromocytomas', 'Disease', 'MESH:D010673', (96, 127)) ('patients', 'Species', '9606', (71, 79)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (322, 335)) ('tumor', 'Phenotype', 'HP:0002664', (301, 306)) ('SDHD', 'Gene', (192, 196)) ('patients', 'Species', '9606', (220, 228)) ('VHL', 'Gene', '7428', (182, 185)) ('extra-adrenal tumors', 'Disease', 'MESH:D010236', (316, 336)) ('tumors', 'Phenotype', 'HP:0002664', (330, 336)) ('SDHB', 'Gene', '6390', (202, 206)) ('non-syndromic pheochromocytomas', 'Disease', (96, 127)) ('multiple tumors', 'Disease', (292, 307)) ('tumor', 'Phenotype', 'HP:0002664', (330, 335)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (110, 126)) ('RET', 'Gene', '5979', (187, 190)) ('SDHB', 'Gene', (202, 206)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (110, 127)) ('VHL', 'Gene', (182, 185)) ('SDHD', 'Gene', '6392', (192, 196)) ('tumors', 'Phenotype', 'HP:0002664', (301, 307)) ('RET', 'Gene', (187, 190)) 103927 26347711 Another study developed by the same group reinforced that up to 35% of patients with PCC/PGLs can be associated to an inherited mutation in these genes. ('PCC', 'Gene', (85, 88)) ('patients', 'Species', '9606', (71, 79)) ('PGLs', 'Phenotype', 'HP:0002668', (89, 93)) ('associated', 'Reg', (101, 111)) ('PCC', 'Gene', '1421', (85, 88)) ('mutation', 'Var', (128, 136)) 103929 26347711 They found that 14% of the cases harbor germ-line mutations; a majority (98%) of them had tumors with younger onset, not more than 45 years old. ('mutations', 'Var', (50, 59)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('tumors', 'Disease', (90, 96)) ('tumors', 'Disease', 'MESH:D009369', (90, 96)) ('tumors', 'Phenotype', 'HP:0002664', (90, 96)) 103935 26347711 However, we have to be aware of the aspects that can influence the prevalence of the PCC/PGL mutations: tertiary care centers are more prone to evaluate patients with multiple and more complicated PCCs. ('PCC', 'Gene', (85, 88)) ('mutations', 'Var', (93, 102)) ('patients', 'Species', '9606', (153, 161)) ('PCCs', 'Phenotype', 'HP:0002666', (197, 201)) ('PCC', 'Gene', '1421', (197, 200)) ('PCC', 'Gene', '1421', (85, 88)) ('PCC', 'Gene', (197, 200)) 103940 26347711 have found that 41% (25/61) of the sporadic tumors in their population harbor an inactivating somatic mutation in the NF1 gene associated with loss of the wild-type allele in 84% (21/25) of cases. ('tumors', 'Phenotype', 'HP:0002664', (44, 50)) ('NF1', 'Gene', '4763', (118, 121)) ('sporadic tumors', 'Disease', 'MESH:D009369', (35, 50)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('inactivating', 'Var', (81, 93)) ('sporadic tumors', 'Disease', (35, 50)) ('NF1', 'Gene', (118, 121)) 103960 26347711 Adrenal (unilateral or bilateral) PCCs are frequently associated with VHL and RET, while extra-adrenal sympathetic PGLs (abdominal or thoracic) are usually caused by SDHB, SDHD, and VHL mutations. ('VHL', 'Gene', (70, 73)) ('PCC', 'Gene', '1421', (34, 37)) ('SDHB', 'Gene', '6390', (166, 170)) ('VHL', 'Gene', '7428', (70, 73)) ('mutations', 'Var', (186, 195)) ('SDHB', 'Gene', (166, 170)) ('RET', 'Gene', (78, 81)) ('RET', 'Gene', '5979', (78, 81)) ('PCCs', 'Phenotype', 'HP:0002666', (34, 38)) ('PCC', 'Gene', (34, 37)) ('VHL', 'Gene', (182, 185)) ('VHL', 'Gene', '7428', (182, 185)) ('caused', 'Reg', (156, 162)) ('SDHD', 'Gene', '6392', (172, 176)) ('Adrenal', 'Disease', (0, 7)) ('associated', 'Reg', (54, 64)) ('SDHD', 'Gene', (172, 176)) ('PGLs', 'Phenotype', 'HP:0002668', (115, 119)) 103961 26347711 Head and neck tumors are mainly caused by SDH mutations, especially SDHD and B, and less often by VHL and SDHC. ('SDHC', 'Gene', (106, 110)) ('mutations', 'Var', (46, 55)) ('neck tumors', 'Disease', 'MESH:D006258', (9, 20)) ('SDHD', 'Gene', '6392', (68, 72)) ('SDHC', 'Gene', '6391', (106, 110)) ('Head and neck tumors', 'Phenotype', 'HP:0012288', (0, 20)) ('VHL', 'Gene', (98, 101)) ('SDHD', 'Gene', (68, 72)) ('SDH', 'Gene', (42, 45)) ('caused', 'Reg', (32, 38)) ('tumors', 'Phenotype', 'HP:0002664', (14, 20)) ('VHL', 'Gene', '7428', (98, 101)) ('neck tumors', 'Disease', (9, 20)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) 103962 26347711 SDHC mutations have been described exclusively in patients with parasympathetic PGLs and quite rare in association with sympathetic PCC/PGLs. ('patients', 'Species', '9606', (50, 58)) ('PGLs', 'Phenotype', 'HP:0002668', (136, 140)) ('SDHC', 'Gene', (0, 4)) ('PCC', 'Gene', '1421', (132, 135)) ('mutations', 'Var', (5, 14)) ('SDHC', 'Gene', '6391', (0, 4)) ('parasympathetic PGLs', 'Disease', (64, 84)) ('PGLs', 'Phenotype', 'HP:0002668', (80, 84)) ('PCC', 'Gene', (132, 135)) 103963 26347711 Genetic test for SDHB is indicated in all patients with malignant PGL or PCC, and up of 50% of these tumors have an SDHB mutation. ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) ('PCC', 'Gene', '1421', (73, 76)) ('SDHB', 'Gene', '6390', (116, 120)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('SDHB', 'Gene', '6390', (17, 21)) ('SDHB', 'Gene', (116, 120)) ('mutation', 'Var', (121, 129)) ('PCC', 'Gene', (73, 76)) ('SDHB', 'Gene', (17, 21)) ('patients', 'Species', '9606', (42, 50)) ('tumors', 'Disease', (101, 107)) 103972 26347711 Head and neck PGLs should be first screened for SDHD and SDHC mutations. ('SDHD', 'Gene', (48, 52)) ('SDHC', 'Gene', '6391', (57, 61)) ('PGLs', 'Phenotype', 'HP:0002668', (14, 18)) ('SDHD', 'Gene', '6392', (48, 52)) ('mutations', 'Var', (62, 71)) ('SDHC', 'Gene', (57, 61)) 104050 19881977 In spite of surgical removal of the paraganglioma, the 24 hr urine hormones, including VMA, epinephrine, norepinephrine, dopamine, and normetanephrine, remained high and were 16.8 mg, 42.98 microg, 742.95 microg, 426.65 microg, and 6653.38 microg, respectively. ('dopamine', 'MPA', (121, 129)) ('VMA', 'MPA', (87, 90)) ('normetanephrine', 'MPA', (135, 150)) ('paraganglioma', 'Disease', (36, 49)) ('epinephrine', 'Chemical', 'MESH:D004837', (92, 103)) ('normetanephrine', 'Chemical', 'MESH:D009647', (135, 150)) ('epinephrine', 'MPA', (92, 103)) ('742.95', 'Var', (198, 204)) ('dopamine', 'Chemical', 'MESH:D004298', (121, 129)) ('norepinephrine', 'Chemical', 'MESH:D009638', (105, 119)) ('urine hormones', 'MPA', (61, 75)) ('paraganglioma', 'Disease', 'MESH:D010235', (36, 49)) ('VMA', 'Chemical', 'MESH:D014642', (87, 90)) ('paraganglioma', 'Phenotype', 'HP:0002668', (36, 49)) ('epinephrine', 'Chemical', 'MESH:D004837', (108, 119)) ('6653.38', 'Var', (232, 239)) ('norepinephrine', 'MPA', (105, 119)) 104066 19881977 Mutations in the SDHD (previously known as PGL1), PGL2 and SDHC (previously PGL3) genes have been associated with familial paragangliomas. ('PGL2', 'Gene', (50, 54)) ('SDHC', 'Gene', (59, 63)) ('paraganglioma', 'Phenotype', 'HP:0002668', (123, 136)) ('paragangliomas', 'Phenotype', 'HP:0002668', (123, 137)) ('SDHD', 'Gene', '6392', (17, 21)) ('familial paragangliomas', 'Disease', (114, 137)) ('SDHC', 'Gene', '6391', (59, 63)) ('familial paragangliomas', 'Disease', 'MESH:D010235', (114, 137)) ('Mutations', 'Var', (0, 9)) ('SDHD', 'Gene', (17, 21)) ('PGL2', 'Gene', '54949', (50, 54)) ('PGL3', 'Gene', '6391', (76, 80)) ('associated', 'Reg', (98, 108)) ('PGL3', 'Gene', (76, 80)) 104070 19881977 Mutations in SDHB, SDHC and SDHD identified with hereditary paragangliomas were found in these patients. ('SDHD', 'Gene', (28, 32)) ('SDHC', 'Gene', '6391', (19, 23)) ('paragangliomas', 'Phenotype', 'HP:0002668', (60, 74)) ('hereditary paragangliomas', 'Disease', 'MESH:D010235', (49, 74)) ('patients', 'Species', '9606', (95, 103)) ('SDHB', 'Gene', '6390', (13, 17)) ('Mutations', 'Var', (0, 9)) ('hereditary paragangliomas', 'Disease', (49, 74)) ('SDHB', 'Gene', (13, 17)) ('paraganglioma', 'Phenotype', 'HP:0002668', (60, 73)) ('SDHD', 'Gene', '6392', (28, 32)) ('SDHC', 'Gene', (19, 23)) 104072 19881977 In Carney-Stratakis syndrome, most patients have a family history, gastrointestinal stromal tumor is multifocal, and mutations of SDH genes are found in 73% of cases. ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (67, 97)) ('mutations', 'Var', (117, 126)) ('Carney-Stratakis syndrome', 'Disease', (3, 28)) ('SDH', 'Gene', (130, 133)) ('gastrointestinal stromal tumor', 'Disease', (67, 97)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (3, 28)) ('found', 'Reg', (144, 149)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (67, 97)) ('patients', 'Species', '9606', (35, 43)) ('SDH', 'Gene', '6390', (130, 133)) 104075 19881977 KIT mutation is usually found in gastrointestinal stromal tumors and rarely in Carney triad, and our case was not an exception. ('tumor', 'Phenotype', 'HP:0002664', (58, 63)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (33, 64)) ('Carney triad', 'Disease', (79, 91)) ('tumors', 'Phenotype', 'HP:0002664', (58, 64)) ('gastrointestinal stromal tumors', 'Disease', (33, 64)) ('mutation', 'Var', (4, 12)) ('found', 'Reg', (24, 29)) ('KIT', 'Gene', (0, 3)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (33, 64)) ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (33, 63)) 104082 32471518 Collapsing pathogenic and likely pathogenic variants to cancer predisposition genes (CPG), we analyzed the association between CPGs and cancer types within ancestral groups. ('cancer', 'Disease', 'MESH:D009369', (136, 142)) ('cancer', 'Phenotype', 'HP:0002664', (56, 62)) ('cancer', 'Disease', (136, 142)) ('pathogenic', 'Reg', (11, 21)) ('cancer', 'Disease', (56, 62)) ('cancer', 'Disease', 'MESH:D009369', (56, 62)) ('variants', 'Var', (44, 52)) ('cancer', 'Phenotype', 'HP:0002664', (136, 142)) 104083 32471518 We also identified the predisposition-associated two-hit events and gene expression effects in tumors. ('tumors', 'Disease', 'MESH:D009369', (95, 101)) ('tumors', 'Disease', (95, 101)) ('effects', 'Reg', (84, 91)) ('gene expression', 'Var', (68, 83)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) 104088 32471518 Most predisposing variants were found exclusively in one ancestry in the TCGA and gnomAD datasets. ('AD', 'Disease', 'MESH:D000544', (86, 88)) ('AD', 'Disease', (86, 88)) ('variants', 'Var', (18, 26)) 104089 32471518 Further, tumors from the SDHB or BRCA2 carriers showed simultaneous allelic-specific expression and low gene expression of their respective affected genes, and FH splice-site variant carriers showed mis-splicing of FH. ('BRCA2', 'Gene', (33, 38)) ('mis-splicing', 'Var', (199, 211)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('tumors', 'Disease', (9, 15)) ('carriers', 'Var', (39, 47)) ('tumors', 'Phenotype', 'HP:0002664', (9, 15)) ('BRCA2', 'Gene', '675', (33, 38)) ('SDHB', 'Gene', '6390', (25, 29)) ('low', 'NegReg', (100, 103)) ('SDHB', 'Gene', (25, 29)) ('gene expression', 'MPA', (104, 119)) ('tumors', 'Disease', 'MESH:D009369', (9, 15)) 104090 32471518 While several CPGs are shared across patients, many pathogenic variants are found to be ancestry-specific and trigger somatic effects. ('patients', 'Species', '9606', (37, 45)) ('trigger', 'Reg', (110, 117)) ('variants', 'Var', (63, 71)) 104093 32471518 Previous studies revealed different carrier rates of pathogenic variants across ancestries, albeit often in a limited panel of genes or selected cancer types. ('cancer', 'Disease', (145, 151)) ('cancer', 'Phenotype', 'HP:0002664', (145, 151)) ('pathogenic', 'Reg', (53, 63)) ('cancer', 'Disease', 'MESH:D009369', (145, 151)) ('variants', 'Var', (64, 72)) 104096 32471518 Consequently, germline genetic testing in non-White patients often results in higher rates of variants of unknown significance (VUSs). ('VUSs', 'Disease', (128, 132)) ('VUSs', 'Disease', 'None', (128, 132)) ('higher rates', 'PosReg', (78, 90)) ('variants of', 'Var', (94, 105)) ('patients', 'Species', '9606', (52, 60)) 104099 32471518 Herein, we analyzed germline variant data of 9899 cancer cases across 33 cancer types from the Cancer Genome Atlas Project (TCGA) to identify ancestry-specific cancer-gene associations where the genes show an excess of pathogenic/likely pathogenic germline variants the TCGA samples. ('cancer', 'Disease', (73, 79)) ('cancer', 'Disease', 'MESH:D009369', (73, 79)) ('cancer', 'Disease', 'MESH:D009369', (160, 166)) ('Cancer', 'Disease', (95, 101)) ('cancer', 'Disease', (50, 56)) ('variants', 'Var', (257, 265)) ('cancer', 'Disease', 'MESH:D009369', (50, 56)) ('pathogenic/likely', 'CPA', (219, 236)) ('cancer', 'Disease', (160, 166)) ('Cancer', 'Disease', 'MESH:D009369', (95, 101)) ('Cancer', 'Phenotype', 'HP:0002664', (95, 101)) ('cancer', 'Phenotype', 'HP:0002664', (73, 79)) ('excess', 'PosReg', (209, 215)) ('cancer', 'Phenotype', 'HP:0002664', (160, 166)) ('cancer', 'Phenotype', 'HP:0002664', (50, 56)) 104103 32471518 Evidence of a somatic second hit event (i.e., loss of heterozygosity [LOH] or a biallelic mutation) was found in two thirds of the tumors with germline predisposing variants. ('variants', 'Var', (165, 173)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('tumors', 'Phenotype', 'HP:0002664', (131, 137)) ('loss of', 'NegReg', (46, 53)) ('tumors', 'Disease', 'MESH:D009369', (131, 137)) ('tumors', 'Disease', (131, 137)) ('biallelic mutation', 'Var', (80, 98)) 104104 32471518 Many carriers of ancestry-specific predisposition variants showed altered expression of the affected genes, including allelic-specific expression (ASE), mis-splicing, and reduced tumor suppressor gene expression, further supporting these genetic variants' contribution to cancer predisposition. ('expression', 'MPA', (74, 84)) ('tumor', 'Phenotype', 'HP:0002664', (179, 184)) ('cancer', 'Phenotype', 'HP:0002664', (272, 278)) ('altered', 'Reg', (66, 73)) ('cancer', 'Disease', (272, 278)) ('mis-splicing', 'MPA', (153, 165)) ('tumor', 'Disease', 'MESH:D009369', (179, 184)) ('cancer', 'Disease', 'MESH:D009369', (272, 278)) ('reduced', 'NegReg', (171, 178)) ('allelic-specific', 'MPA', (118, 134)) ('variants', 'Var', (50, 58)) ('expression', 'MPA', (201, 211)) ('tumor', 'Disease', (179, 184)) 104109 32471518 We further required the variants to have an allelic depth (AD) >= 5 for the alternative allele. ('AD', 'Disease', 'MESH:D000544', (59, 61)) ('AD', 'Disease', (59, 61)) ('variants', 'Var', (24, 32)) 104112 32471518 We subsequently retained only cancer-relevant pathogenic variants, based on whether they were found in the curated cancer variant databases or a 152 curated cancer predisposing gene list. ('cancer', 'Phenotype', 'HP:0002664', (157, 163)) ('cancer', 'Disease', (115, 121)) ('cancer', 'Disease', (30, 36)) ('cancer', 'Disease', 'MESH:D009369', (30, 36)) ('cancer', 'Phenotype', 'HP:0002664', (115, 121)) ('cancer', 'Disease', 'MESH:D009369', (157, 163)) ('cancer', 'Disease', (157, 163)) ('variants', 'Var', (57, 65)) ('cancer', 'Disease', 'MESH:D009369', (115, 121)) ('cancer', 'Phenotype', 'HP:0002664', (30, 36)) 104116 32471518 To acquire enough CharGer points to be classified as likely pathogenic, the variants typically need to be predicted to result in truncation in cancer predisposition genes where the loss of function (LOF) is a known disease mechanism and harbor variants with a dominant (evidence level PVS1, + 8 points) or a recessive (evidence level PSC1, + 4 points) mode of inheritance. ('cancer', 'Phenotype', 'HP:0002664', (143, 149)) ('truncation', 'MPA', (129, 139)) ('PSC1', 'Gene', '54439', (334, 338)) ('loss of function', 'NegReg', (181, 197)) ('variants', 'Var', (76, 84)) ('result in', 'Reg', (119, 128)) ('PSC1', 'Gene', (334, 338)) ('cancer', 'Disease', (143, 149)) ('cancer', 'Disease', 'MESH:D009369', (143, 149)) 104117 32471518 Additionally, evidence level PS1, + 7 points are scored if the variant results in the same peptide sequence change as an established pathogenic variant. ('variant', 'Var', (63, 70)) ('PS1', 'Gene', '338399', (29, 32)) ('PS1', 'Gene', (29, 32)) ('peptide sequence change', 'MPA', (91, 114)) 104127 32471518 For each cancer type with at least 20 cases of the tested ancestry with at least one predisposing variant carrier, we tested the burden of predisposing variants for each gene against all other cancer cohorts as controls. ('cancer', 'Disease', (9, 15)) ('cancer', 'Disease', 'MESH:D009369', (193, 199)) ('cancer', 'Disease', (193, 199)) ('cancer', 'Phenotype', 'HP:0002664', (9, 15)) ('variants', 'Var', (152, 160)) ('cancer', 'Phenotype', 'HP:0002664', (193, 199)) ('cancer', 'Disease', 'MESH:D009369', (9, 15)) ('tested', 'Reg', (118, 124)) 104130 32471518 We further retained pathogenic and likely pathogenic variants per ACMG/AMP criteria as ascertained by InterVar and annotated using ANNOVAR. ('OV', 'Phenotype', 'HP:0012887', (134, 136)) ('OV', 'Phenotype', 'HP:0100615', (134, 136)) ('AMP', 'Chemical', 'MESH:D000249', (71, 74)) ('AC', 'Chemical', '-', (66, 68)) ('pathogenic', 'Reg', (20, 30)) ('pathogenic', 'Reg', (42, 52)) ('variants', 'Var', (53, 61)) 104133 32471518 The tumor expression percentile of individual genes in each cancer cohort was calculated using the empirical cumulative distribution function (ecdf), as implemented in R. We annotated germline carriers of predisposition variants with extreme mRNA tumor expression (> 80th or < 20th percentile) of the affected gene. ('tumor', 'Disease', (4, 9)) ('tumor', 'Phenotype', 'HP:0002664', (247, 252)) ('variants', 'Var', (220, 228)) ('tumor', 'Disease', (247, 252)) ('cancer', 'Disease', 'MESH:D009369', (60, 66)) ('cancer', 'Disease', (60, 66)) ('tumor', 'Disease', 'MESH:D009369', (4, 9)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) ('tumor', 'Disease', 'MESH:D009369', (247, 252)) ('cancer', 'Phenotype', 'HP:0002664', (60, 66)) 104134 32471518 For samples within the same ancestry and same cancer cohort, we then used the two-sample Kolmogorov-Smirnov test to compare the expression percentile distribution between variants of oncogenes and tumor suppressors. ('cancer', 'Disease', 'MESH:D009369', (46, 52)) ('tumor', 'Disease', 'MESH:D009369', (197, 202)) ('cancer', 'Disease', (46, 52)) ('tumor', 'Phenotype', 'HP:0002664', (197, 202)) ('cancer', 'Phenotype', 'HP:0002664', (46, 52)) ('tumor', 'Disease', (197, 202)) ('variants', 'Var', (171, 179)) 104140 32471518 We considered cancer predisposing genes as those statistically enriched for pooled pathogenic and likely pathogenic variants (referred to here as predisposing variants) as previously classified). ('cancer', 'Disease', (14, 20)) ('variants', 'Var', (116, 124)) ('cancer', 'Disease', 'MESH:D009369', (14, 20)) ('cancer', 'Phenotype', 'HP:0002664', (14, 20)) 104147 32471518 For example, in LUSC, BRCA2 predisposing variants were found in 2 of the 29 African ancestry samples (6.9%), whereas we only found 1 BRCA2 carrier out of the 455 European-ancestry samples (0.44%). ('variants', 'Var', (41, 49)) ('BRCA2', 'Gene', (133, 138)) ('BRCA2', 'Gene', (22, 27)) ('LUSC', 'Phenotype', 'HP:0030359', (16, 20)) ('BRCA2', 'Gene', '675', (133, 138)) ('BRCA2', 'Gene', '675', (22, 27)) 104148 32471518 Specifically, we examined the gene-level rates of individuals carrying pathogenic and likely pathogenic variants in the gnomAD non-cancer cohort (118,479 WES and 15,708 WGS samples, the "Methods" section, Additional file 2: Table S3). ('cancer', 'Phenotype', 'HP:0002664', (131, 137)) ('variants', 'Var', (104, 112)) ('gnomAD non-cancer', 'Disease', (120, 137)) ('gnomAD non-cancer', 'Disease', 'MESH:D009369', (120, 137)) 104155 32471518 The cancer-gene pairs included 15 predisposing variants within the African ancestry and another 6 within the East Asian ancestry. ('cancer', 'Phenotype', 'HP:0002664', (4, 10)) ('variants', 'Var', (47, 55)) ('cancer', 'Disease', (4, 10)) ('cancer', 'Disease', 'MESH:D009369', (4, 10)) 104156 32471518 None of the above variants discovered in the African ancestry were observed in any other ancestry within that cancer type (Fig. ('cancer', 'Disease', 'MESH:D009369', (110, 116)) ('cancer', 'Disease', (110, 116)) ('variants', 'Var', (18, 26)) ('cancer', 'Phenotype', 'HP:0002664', (110, 116)) 104157 32471518 Across the pan-cancer TCGA cohort, all of the BRCA2 frameshift variants found in LUSC and OV were unique to the African ancestry. ('BRCA2', 'Gene', (46, 51)) ('cancer', 'Disease', (15, 21)) ('cancer', 'Disease', 'MESH:D009369', (15, 21)) ('OV', 'Phenotype', 'HP:0012887', (90, 92)) ('frameshift variants', 'Var', (52, 71)) ('BRCA2', 'Gene', '675', (46, 51)) ('OV', 'Phenotype', 'HP:0100615', (90, 92)) ('LUSC', 'Phenotype', 'HP:0030359', (81, 85)) ('cancer', 'Phenotype', 'HP:0002664', (15, 21)) 104158 32471518 For other associated genes in the African ancestry, including ATM (PRAD), FH (KIRP), and VHL (KIRC), the predisposing variants differ between the African and European ancestries (Fig. ('ATM', 'Gene', '472', (62, 65)) ('AD', 'Disease', (69, 71)) ('variants', 'Var', (118, 126)) ('VHL', 'Gene', (89, 92)) ('VHL', 'Gene', '7428', (89, 92)) ('ATM', 'Gene', (62, 65)) ('AD', 'Disease', 'MESH:D000544', (69, 71)) 104159 32471518 The African ancestry-specific predisposing variants include splice site variants ATM c.2921+1G>A and FH c.556-2A>T, protein-truncating variants ATM p.T2333fs and FH p.S187*, and missense variants ATM p.R3008C. ('c.556-2A>T', 'Var', (104, 114)) ('p.R3008C', 'Mutation', 'rs587782292', (200, 208)) ('ATM', 'Gene', '472', (196, 199)) ('c.2921+1G>A', 'Mutation', 'rs587781558', (85, 96)) ('ATM', 'Gene', (81, 84)) ('p.T2333fs', 'Mutation', 'rs587781299', (148, 157)) ('ATM', 'Gene', '472', (144, 147)) ('p.S187*', 'Mutation', 'p.S187*', (165, 172)) ('c.556-2A>T', 'Mutation', 'c.556-2A>T', (104, 114)) ('ATM', 'Gene', '472', (81, 84)) ('ATM', 'Gene', (196, 199)) ('p.T2333fs', 'Var', (148, 157)) ('ATM', 'Gene', (144, 147)) ('c.2921+1G>A', 'Var', (85, 96)) ('p.S187*', 'Var', (165, 172)) 104160 32471518 VHL p.C162F is the only recurrent variant found in two KIRC cases. ('p.C162F', 'Var', (4, 11)) ('VHL', 'Gene', '7428', (0, 3)) ('VHL', 'Gene', (0, 3)) ('p.C162F', 'Mutation', 'rs397516444', (4, 11)) 104161 32471518 In the East Asian ancestry, we assessed predisposing variants in BRIP1 (STAD), POLE (LIHC), and RECQL (STAD) (Fig. ('RECQL', 'Gene', (96, 101)) ('BRIP1', 'Gene', '83990', (65, 70)) ('AD', 'Disease', 'MESH:D000544', (74, 76)) ('AD', 'Disease', 'MESH:D000544', (105, 107)) ('AD', 'Disease', (74, 76)) ('AD', 'Disease', (105, 107)) ('RECQL', 'Gene', '5965', (96, 101)) ('BRIP1', 'Gene', (65, 70)) ('variants', 'Var', (53, 61)) 104162 32471518 These include two BRIP1 variants p.I525fs and p.E1222fs and two protein-truncating variants in POLE and RECQL, respectively. ('p.E1222fs', 'Mutation', 'rs752586524', (46, 55)) ('p.E1222fs', 'Var', (46, 55)) ('BRIP1', 'Gene', '83990', (18, 23)) ('RECQL', 'Gene', (104, 109)) ('p.I525fs', 'Mutation', 'p.I525fsX', (33, 41)) ('protein-truncating', 'NegReg', (64, 82)) ('RECQL', 'Gene', '5965', (104, 109)) ('p.I525fs', 'Var', (33, 41)) ('BRIP1', 'Gene', (18, 23)) 104164 32471518 Among the African ancestry-specific predisposing variants, splice-site variant ATM c.2921+1G>A (African ancestry allelic count [AC]/total allele number [AN] = 1/14,878; allelic frequency [AF] = 0.0067%) and BRCA2 p.R3128* (African ancestry AC/AN = 4/23,610; AF = 0.016%) were the only variants present in the African and non-Finnish European ancestries in gnomAD-non-cancer dataset. ('ATM', 'Gene', '472', (79, 82)) ('gnomAD-non-cancer', 'Disease', (356, 373)) ('AF', 'Disease', 'MESH:D001281', (188, 190)) ('cancer', 'Phenotype', 'HP:0002664', (367, 373)) ('AF', 'Disease', 'MESH:D001281', (258, 260)) ('BRCA2', 'Gene', (207, 212)) ('c.2921+1G>A', 'Var', (83, 94)) ('gnomAD-non-cancer', 'Disease', 'MESH:D009369', (356, 373)) ('p.R3128*', 'Mutation', 'p.R3128*', (213, 221)) ('c.2921+1G>A', 'Mutation', 'rs587781558', (83, 94)) ('AC', 'Chemical', '-', (240, 242)) ('BRCA2', 'Gene', '675', (207, 212)) ('AC', 'Chemical', '-', (128, 130)) ('ATM', 'Gene', (79, 82)) ('p.R3128*', 'Var', (213, 221)) 104165 32471518 All other variants were absent within African ancestry and most other ancestries in gnomAD except SDHB p.R46* (Finnish European ancestry AC/AN = 2/25,066; AF = 0.007%) and ATM p.R3008C (East Asian ancestry AC/AN = 1/17,688; AF = 0.005%). ('p.R3008C', 'Mutation', 'rs587782292', (176, 184)) ('AF', 'Disease', 'MESH:D001281', (155, 157)) ('p.R46*', 'Mutation', 'p.R46*', (103, 109)) ('AD', 'Disease', 'MESH:D000544', (88, 90)) ('AD', 'Disease', (88, 90)) ('AC', 'Chemical', '-', (137, 139)) ('AF', 'Disease', 'MESH:D001281', (224, 226)) ('SDHB', 'Gene', '6390', (98, 102)) ('SDHB', 'Gene', (98, 102)) ('AC', 'Chemical', '-', (206, 208)) ('ATM', 'Gene', (172, 175)) ('p.R46*', 'Var', (103, 109)) ('ATM', 'Gene', '472', (172, 175)) ('p.R3008C', 'Var', (176, 184)) 104166 32471518 Similarly, only two of the six East Asian ancestry-specific predisposing variants, BRIP1 p.E1222Gfs (East Asian ancestry AC/AN = 11/19,232; AF = 0.05%) and POLE p.Tyr1078fs (East Asian ancestry AC/AN = 1/17,692; AF = 0.005%), were present exclusively in the East Asian ancestry of gnomAD-non-cancer dataset. ('p.E1222G', 'Var', (89, 97)) ('AF', 'Disease', 'MESH:D001281', (140, 142)) ('AC', 'Chemical', '-', (194, 196)) ('cancer', 'Phenotype', 'HP:0002664', (292, 298)) ('AF', 'Disease', 'MESH:D001281', (212, 214)) ('BRIP1', 'Gene', '83990', (83, 88)) ('gnomAD-non-cancer', 'Disease', 'MESH:D009369', (281, 298)) ('p.E1222G', 'SUBSTITUTION', 'None', (89, 97)) ('p.Tyr1078fs', 'Var', (161, 172)) ('AC', 'Chemical', '-', (121, 123)) ('p.Tyr1078fs', 'Mutation', 'p.Y1078fsX', (161, 172)) ('gnomAD-non-cancer', 'Disease', (281, 298)) ('BRIP1', 'Gene', (83, 88)) 104167 32471518 Of note, 7 of the 15 predisposing variants, including BRCA2 variants in OV (p.Y1710fs, p.K1202fs) and in LUSC (p.V3082fs), were not found in ClinVar. ('p.Y1710fs', 'Var', (76, 85)) ('OV', 'Phenotype', 'HP:0012887', (72, 74)) ('p.K1202fs', 'Mutation', 'p.K1202fsX', (87, 96)) ('OV', 'Phenotype', 'HP:0100615', (72, 74)) ('LUSC', 'Phenotype', 'HP:0030359', (105, 109)) ('BRCA2', 'Gene', (54, 59)) ('p.V3082fs', 'Mutation', 'p.V3082fsX', (111, 120)) ('p.V3082fs', 'Var', (111, 120)) ('p.K1202fs', 'Var', (87, 96)) ('BRCA2', 'Gene', '675', (54, 59)) ('p.Y1710fs', 'Mutation', 'p.Y1710fsX', (76, 85)) 104168 32471518 While VHL p.C162F lacks a ClinVar record, the co-localizing p.C162W showed three reports of pathogenicity and one report of uncertain significance. ('p.C162F', 'Mutation', 'rs397516444', (10, 17)) ('p.C162F', 'Var', (10, 17)) ('VHL', 'Gene', (6, 9)) ('p.C162W', 'Var', (60, 67)) ('p.C162W', 'SUBSTITUTION', 'None', (60, 67)) ('VHL', 'Gene', '7428', (6, 9)) 104170 32471518 Only the POLE p.Y1078fs (AC/AN = 1/17,692, AF = 0.0056%) and BRIP1 p.E1222fs (AC/AN = 11/19,232, AF = 0.057%) were present exclusively in the East Asian ancestry of gnomAD-non-cancer dataset. ('gnomAD-non-cancer', 'Disease', (165, 182)) ('AC', 'Chemical', '-', (78, 80)) ('p.E1222fs', 'Var', (67, 76)) ('gnomAD-non-cancer', 'Disease', 'MESH:D009369', (165, 182)) ('cancer', 'Phenotype', 'HP:0002664', (176, 182)) ('p.E1222fs', 'Mutation', 'rs752586524', (67, 76)) ('BRIP1', 'Gene', (61, 66)) ('AC', 'Chemical', '-', (25, 27)) ('p.Y1078fs', 'Var', (14, 23)) ('BRIP1', 'Gene', '83990', (61, 66)) ('AF', 'Disease', 'MESH:D001281', (97, 99)) ('AF', 'Disease', 'MESH:D001281', (43, 45)) ('p.Y1078fs', 'Mutation', 'p.Y1078fsX', (14, 23)) 104171 32471518 First, we investigated the extent of loss of heterozygosity (LOH) of the predisposing variants using our previously developed statistical test (the "Methods" section) that compares the variant allele fractions in tumor vs. normal samples. ('tumor', 'Disease', (213, 218)) ('tumor', 'Disease', 'MESH:D009369', (213, 218)) ('tumor', 'Phenotype', 'HP:0002664', (213, 218)) ('variants', 'Var', (86, 94)) 104172 32471518 Among the variants observed in the African ancestry, we observed significant LOH (FDR < 0.05) for both truncating variants in SDHB p.R116fs and p.R46* in PCPG (Fig. ('p.R46*', 'Mutation', 'p.R46*', (144, 150)) ('p.R116fs', 'Mutation', 'p.R116fsX', (131, 139)) ('p.R46*', 'Var', (144, 150)) ('SDHB', 'Gene', '6390', (126, 130)) ('SDHB', 'Gene', (126, 130)) ('p.R116fs', 'Var', (131, 139)) 104173 32471518 Three additional variants exhibited significant LOH, including BRCA2 p.R3128* (LUSC), BRCA2 p.K1202fs (OV), and FH p.S187* (KIRP). ('LUSC', 'Phenotype', 'HP:0030359', (79, 83)) ('BRCA2', 'Gene', (86, 91)) ('FH p.S187*', 'Var', (112, 122)) ('BRCA2', 'Gene', '675', (63, 68)) ('p.K1202fs', 'Var', (92, 101)) ('OV', 'Phenotype', 'HP:0012887', (103, 105)) ('p.S187*', 'Var', (115, 122)) ('BRCA2', 'Gene', '675', (86, 91)) ('OV', 'Phenotype', 'HP:0100615', (103, 105)) ('p.R3128*', 'Mutation', 'p.R3128*', (69, 77)) ('p.S187*', 'Mutation', 'p.S187*', (115, 122)) ('p.K1202fs', 'Mutation', 'p.K1202fsX', (92, 101)) ('BRCA2', 'Gene', (63, 68)) ('p.R3128*', 'Var', (69, 77)) 104174 32471518 We also observed suggestive LOH (FDR < 0.15 or tumor VAF > 0.6) for ATM c.2921+1G>A (PRAD) and BRCA2 p.Y1710fs (OV) (Fig. ('BRCA2', 'Gene', '675', (95, 100)) ('AF', 'Disease', 'MESH:D001281', (54, 56)) ('p.Y1710fs', 'Var', (101, 110)) ('c.2921+1G>A', 'Var', (72, 83)) ('OV', 'Phenotype', 'HP:0100615', (112, 114)) ('OV', 'Phenotype', 'HP:0012887', (112, 114)) ('ATM', 'Gene', (68, 71)) ('tumor', 'Disease', 'MESH:D009369', (47, 52)) ('c.2921+1G>A', 'Mutation', 'rs587781558', (72, 83)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('BRCA2', 'Gene', (95, 100)) ('ATM', 'Gene', '472', (68, 71)) ('AD', 'Disease', 'MESH:D000544', (87, 89)) ('tumor', 'Disease', (47, 52)) ('AD', 'Disease', (87, 89)) ('p.Y1710fs', 'Mutation', 'p.Y1710fsX', (101, 110)) 104175 32471518 Among the six predisposing variants in the East Asian ancestry, only POLE p.E2137* (LIHC) showed significant LOH (Fig. ('p.E2137*', 'Mutation', 'p.E2137*', (74, 82)) ('LOH', 'NegReg', (109, 112)) ('p.E2137*', 'Var', (74, 82)) 104176 32471518 In a PRAD carrier of ATM, the germline p.L2332fs variant was coupled with a somatic p.E2164K mutation; in the KIRC carrier of VHL, the germline p.C162F variant was coupled with somatic p.E186* mutation. ('p.E2164K', 'Mutation', 'rs1317619286', (84, 92)) ('p.C162F', 'Mutation', 'rs397516444', (144, 151)) ('p.E186* mutation', 'Var', (185, 201)) ('p.L2332fs', 'Mutation', 'p.L2332fsX', (39, 48)) ('p.L2332fs', 'Var', (39, 48)) ('AD', 'Disease', 'MESH:D000544', (7, 9)) ('AD', 'Disease', (7, 9)) ('VHL', 'Gene', (126, 129)) ('ATM', 'Gene', (21, 24)) ('p.E2164K', 'Var', (84, 92)) ('p.E186*', 'Mutation', 'p.E186*', (185, 192)) ('VHL', 'Gene', '7428', (126, 129)) ('ATM', 'Gene', '472', (21, 24)) 104177 32471518 4a), germline p.S187* variant was coupled with a somatic splice-site mutation c.1390+6T>A. ('p.S187*', 'Var', (14, 21)) ('c.1390+6T>A', 'Mutation', 'c.1390+6T>A', (78, 89)) ('p.S187*', 'Mutation', 'p.S187*', (14, 21)) ('c.1390+6T>A', 'Var', (78, 89)) 104178 32471518 Analysis of RNA from the KIRP tumor revealed that the somatic FH: c.1390+6T>A causes mis-splicing of 27.6% of the transcripts in tumor RNA, as indicated by the number of reads spanning consensus splice site (n = 68) and the new cryptic splice site (n = 26) (case 2 in Fig. ('mis-splicing', 'MPA', (85, 97)) ('c.1390+6T>A', 'Var', (66, 77)) ('causes', 'Reg', (78, 84)) ('tumor', 'Disease', 'MESH:D009369', (129, 134)) ('tumor', 'Disease', 'MESH:D009369', (30, 35)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('tumor', 'Disease', (129, 134)) ('tumor', 'Disease', (30, 35)) ('c.1390+6T>A', 'Mutation', 'c.1390+6T>A', (66, 77)) 104180 32471518 We observed 154 overall and 27 non-European ancestry-specific predisposing variants co-occurring with an extreme expression (> 80% or < 20% in the same cancer cohort) of the respective gene, although the current sample sizes preclude us from discovering significantly associated genes compared to non-carriers within each ancestry-cancer cohort (Additional file 2: Table S5a). ('cancer', 'Disease', (152, 158)) ('cancer', 'Disease', 'MESH:D009369', (152, 158)) ('cancer', 'Disease', (331, 337)) ('cancer', 'Disease', 'MESH:D009369', (331, 337)) ('S5a', 'Gene', '5710', (371, 374)) ('S5a', 'Gene', (371, 374)) ('cancer', 'Phenotype', 'HP:0002664', (152, 158)) ('cancer', 'Phenotype', 'HP:0002664', (331, 337)) ('variants', 'Var', (75, 83)) 104181 32471518 The degree of their variant allele fraction in the tumor RNAseq data (RNA VAF) thus indicates the degree of allelic-specific expression (ASE). ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('tumor', 'Disease', (51, 56)) ('AF', 'Disease', 'MESH:D001281', (75, 77)) ('variant', 'Var', (20, 27)) ('tumor', 'Disease', 'MESH:D009369', (51, 56)) 104182 32471518 The African carriers of SDHB truncating variants p.R116fs (the corresponding gene's expression ranks at the bottom 0.5 percentile among all PCPG cases [0.5%], RNA VAF = 0.25 and p.R46* (9% in PCGP, RNA VAF = 0.80) showed low SDHB expression. ('p.R46*', 'Mutation', 'p.R46*', (178, 184)) ('p.R116fs', 'Mutation', 'p.R116fsX', (49, 57)) ('SDHB', 'Gene', '6390', (225, 229)) ('AF', 'Disease', 'MESH:D001281', (164, 166)) ('AF', 'Disease', 'MESH:D001281', (203, 205)) ('SDHB', 'Gene', (225, 229)) ('expression', 'MPA', (230, 240)) ('p.R116fs', 'Var', (49, 57)) ('p.R46*', 'Var', (178, 184)) ('SDHB', 'Gene', '6390', (24, 28)) ('SDHB', 'Gene', (24, 28)) ('PCGP', 'Chemical', '-', (192, 196)) ('low', 'NegReg', (221, 224)) 104183 32471518 The African carriers of BRCA2 p.Y1710fs (6% in OV, RNA VAF = 0) and p.3082fs (15% in LUSC, RNA VAF = 0) also exhibited low BRCA2 (Fig. ('BRCA2', 'Gene', '675', (123, 128)) ('BRCA2', 'Gene', '675', (24, 29)) ('OV', 'Phenotype', 'HP:0012887', (47, 49)) ('low', 'NegReg', (119, 122)) ('AF', 'Disease', 'MESH:D001281', (96, 98)) ('OV', 'Phenotype', 'HP:0100615', (47, 49)) ('p.3082fs', 'Mutation', 'p.3082fs', (68, 76)) ('AF', 'Disease', 'MESH:D001281', (56, 58)) ('p.Y1710fs', 'Mutation', 'p.Y1710fsX', (30, 39)) ('p.Y1710fs', 'Var', (30, 39)) ('BRCA2', 'Gene', (123, 128)) ('BRCA2', 'Gene', (24, 29)) ('LUSC', 'Phenotype', 'HP:0030359', (85, 89)) 104184 32471518 In the OV case, the germline BRCA2 p.Y1710fs is coupled with a somatic LOH event, resulting in nearly complete loss of BRCA2 expression. ('loss', 'NegReg', (111, 115)) ('OV', 'Phenotype', 'HP:0012887', (7, 9)) ('BRCA2', 'Gene', (29, 34)) ('OV', 'Phenotype', 'HP:0100615', (7, 9)) ('expression', 'MPA', (125, 135)) ('BRCA2', 'Gene', (119, 124)) ('BRCA2', 'Gene', '675', (29, 34)) ('p.Y1710fs', 'Mutation', 'p.Y1710fsX', (35, 44)) ('BRCA2', 'Gene', '675', (119, 124)) ('p.Y1710fs', 'Var', (35, 44)) 104185 32471518 Both of the African ancestry carriers of FH predisposing variants, FH p.S187* (2% in KIRP, RNA VAF = 0.13) and FH:c.556-2A>T (2% in KIRP, RNA VAF = 0.50), showed low FH expression. ('FH:c.556-2A>T', 'Var', (111, 124)) ('p.S187*', 'Var', (70, 77)) ('AF', 'Disease', 'MESH:D001281', (143, 145)) ('p.S187*', 'Mutation', 'p.S187*', (70, 77)) ('AF', 'Disease', 'MESH:D001281', (96, 98)) ('FH:c.556-2A>T', 'SUBSTITUTION', 'None', (111, 124)) ('FH expression', 'MPA', (166, 179)) ('low', 'NegReg', (162, 165)) 104186 32471518 In addition to the biallelic somatic FH:c.1390+6T>A mutation in the carrier of germline FH p.S187* described earlier, we also observed a mis-splicing event in a different case carrying germline FH:c.556-2A>T at the RNA level (case 1 in Fig. ('FH:c.556-2A>T', 'Var', (194, 207)) ('FH:c.1390+6T>A', 'SUBSTITUTION', 'None', (37, 51)) ('FH:c.556-2A>T', 'SUBSTITUTION', 'None', (194, 207)) ('p.S187*', 'Mutation', 'p.S187*', (91, 98)) ('FH:c.1390+6T>A', 'Var', (37, 51)) 104187 32471518 For other ancestries, the tumor from one predisposing variant carrier of the Native/Latin American ancestry, NF1 p.Y489C, showed low NF1 mRNA expression (2% in BRCA, RNA VAF = 0). ('AF', 'Disease', 'MESH:D001281', (171, 173)) ('low', 'NegReg', (129, 132)) ('NF1', 'Gene', (109, 112)) ('tumor', 'Disease', 'MESH:D009369', (26, 31)) ('NF1', 'Gene', (133, 136)) ('BRCA', 'Gene', '672', (160, 164)) ('NF1', 'Gene', '4763', (109, 112)) ('NF1', 'Gene', '4763', (133, 136)) ('p.Y489C', 'Mutation', 'rs137854557', (113, 120)) ('BRCA', 'Gene', (160, 164)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('tumor', 'Disease', (26, 31)) ('p.Y489C', 'Var', (113, 120)) 104188 32471518 Overall, RNA VAF of the majority of protein-truncating variants not accompanied by LOH varied between 0 and 0.25 (Additional file 2: Table S5a), suggesting degradation of the mutant allele. ('S5a', 'Gene', '5710', (139, 142)) ('S5a', 'Gene', (139, 142)) ('variants', 'Var', (55, 63)) ('protein-truncating', 'Protein', (36, 54)) ('AF', 'Disease', 'MESH:D001281', (14, 16)) 104189 32471518 Many predisposing truncating variants of tumor suppressors are assumed to lead to loss of gene expression through mechanisms such as nonsense-mediated decay (NMD). ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('nonsense-mediated decay', 'Disease', (133, 156)) ('tumor', 'Disease', (41, 46)) ('truncating variants', 'Var', (18, 37)) ('gene expression', 'MPA', (90, 105)) ('loss', 'NegReg', (82, 86)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) 104190 32471518 These results support that a fraction of predisposing variants likely result in reduced gene products of tumor suppressors in ancestral groups. ('gene products', 'MPA', (88, 101)) ('tumor', 'Disease', 'MESH:D009369', (105, 110)) ('reduced', 'NegReg', (80, 87)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('variants', 'Var', (54, 62)) ('tumor', 'Disease', (105, 110)) 104191 32471518 Conversely, for the rare tumors with germline variants in oncogenes, the two predisposing RET variants are coupled with elevated RET expression in their African ancestry carriers, including p.C631Y (84% in KIRC) and p.D634Y (91% in PCGP). ('RET', 'Gene', (90, 93)) ('expression', 'MPA', (133, 143)) ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('RET', 'Gene', (129, 132)) ('tumors', 'Disease', (25, 31)) ('tumors', 'Phenotype', 'HP:0002664', (25, 31)) ('RET', 'Gene', '5979', (90, 93)) ('p.D634Y', 'Var', (216, 223)) ('tumors', 'Disease', 'MESH:D009369', (25, 31)) ('p.C631Y', 'Mutation', 'p.C631Y', (190, 197)) ('elevated', 'PosReg', (120, 128)) ('RET', 'Gene', '5979', (129, 132)) ('p.D634Y', 'Mutation', 'p.D634Y', (216, 223)) ('p.C631Y', 'Var', (190, 197)) ('PCGP', 'Chemical', '-', (232, 236)) ('elevated RET', 'Phenotype', 'HP:0008151', (120, 132)) 104208 32471518 In the East Asian ancestry, we found predisposing variants affecting BRIP1 in STAD that warrants further investigation. ('AD', 'Disease', (80, 82)) ('BRIP1', 'Gene', '83990', (69, 74)) ('variants', 'Var', (50, 58)) ('AD', 'Disease', 'MESH:D000544', (80, 82)) ('BRIP1', 'Gene', (69, 74)) 104218 32471518 Many of the predisposing variants found in the African or East Asian ancestry were not identified in the much larger European-ancestry population of TCGA (n = 8184) or even the gnomAD non-cancer cohort (n = 134,187) or submitted to ClinVar by clinical laboratories assessing patients for cancer predisposition. ('cancer', 'Phenotype', 'HP:0002664', (188, 194)) ('variants', 'Var', (25, 33)) ('gnomAD non-cancer', 'Disease', (177, 194)) ('cancer', 'Disease', 'MESH:D009369', (288, 294)) ('cancer', 'Disease', (288, 294)) ('cancer', 'Disease', 'MESH:D009369', (188, 194)) ('cancer', 'Disease', (188, 194)) ('patients', 'Species', '9606', (275, 283)) ('cancer', 'Phenotype', 'HP:0002664', (288, 294)) ('gnomAD non-cancer', 'Disease', 'MESH:D009369', (177, 194)) 104219 32471518 The identification of ancestry-specific predisposing variants further highlights this challenge in minority groups, where current germline sequencing often results in higher rates of variants of unknown significance (VUSs). ('variants of', 'Var', (183, 194)) ('VUSs', 'Disease', (217, 221)) ('VUSs', 'Disease', 'None', (217, 221)) ('higher rates', 'PosReg', (167, 179)) ('variants', 'Var', (53, 61)) 104224 32471518 To aid interpretation of low-frequency ancestry-specific variants, evidence of a somatic second hit event (i.e., loss of heterozygosity [LOH] or a biallelic mutation) in tumor samples can support functionality. ('tumor', 'Disease', 'MESH:D009369', (170, 175)) ('tumor', 'Phenotype', 'HP:0002664', (170, 175)) ('heterozygosity', 'MPA', (121, 135)) ('loss', 'NegReg', (113, 117)) ('tumor', 'Disease', (170, 175)) ('biallelic', 'Var', (147, 156)) ('variants', 'Var', (57, 65)) 104226 32471518 While the majority of cancer genomic studies focus exclusively on the germline or somatic genome, pathogenic germline variants are associated with different somatic mutational signatures, allele-specific imbalance, or somatic drivers. ('cancer', 'Disease', 'MESH:D009369', (22, 28)) ('imbalance', 'Phenotype', 'HP:0002172', (204, 213)) ('cancer', 'Disease', (22, 28)) ('variants', 'Var', (118, 126)) ('cancer', 'Phenotype', 'HP:0002664', (22, 28)) 104228 32471518 Collectively, these findings are providing the roadmaps of how germline variants may trigger and collaborate with specific somatic mutations, eventually leading to cancer development. ('germline variants', 'Var', (63, 80)) ('cancer', 'Phenotype', 'HP:0002664', (164, 170)) ('leading to', 'Reg', (153, 163)) ('trigger', 'Reg', (85, 92)) ('cancer', 'Disease', (164, 170)) ('cancer', 'Disease', 'MESH:D009369', (164, 170)) 104229 32471518 In summary, we identify ancestry-specific predisposing genes and variants contributing to multiple cancer types. ('cancer', 'Disease', 'MESH:D009369', (99, 105)) ('variants', 'Var', (65, 73)) ('cancer', 'Disease', (99, 105)) ('contributing', 'Reg', (74, 86)) ('cancer', 'Phenotype', 'HP:0002664', (99, 105)) 104230 32471518 While the identified cancer predisposition genes are known, most predisposing variants are found to be exclusive within ancestries, supporting the "clan-genomics" hypothesis. ('cancer', 'Phenotype', 'HP:0002664', (21, 27)) ('variants', 'Var', (78, 86)) ('cancer', 'Disease', (21, 27)) ('cancer', 'Disease', 'MESH:D009369', (21, 27)) 104251 30769931 Moreover, PPGLs with high GAPP scores metastasized sooner than those with low scores. ('GAPP', 'Chemical', '-', (26, 30)) ('GAPP scores', 'Var', (26, 37)) ('PGL', 'Phenotype', 'HP:0002668', (11, 14)) ('PPGLs', 'Chemical', '-', (10, 15)) ('PGLs', 'Phenotype', 'HP:0002668', (11, 15)) ('metastasized', 'CPA', (38, 50)) 104277 30769931 In a recent, comprehensive analysis of The Cancer Genome Atlas (TCGA) database, genomic markers associated with metastatic disease (distant metastases, local recurrence or positive regional lymph nodes) included SDHB germline mutations, MAML3 fusion gene variants, somatic mutations in SETD2 or ATRX, a high number of somatic mutations in total, a hypermethylation subtype and the two mRNA subtypes: the Wnt-altered and the pseudohypoxia. ('pseudohypoxia', 'Disease', (424, 437)) ('metastatic disease', 'Disease', (112, 130)) ('ATRX', 'Gene', (295, 299)) ('variants', 'Var', (255, 263)) ('MAML3', 'Gene', '55534', (237, 242)) ('Cancer Genome Atlas', 'Disease', (43, 62)) ('ATRX', 'Gene', '546', (295, 299)) ('Cancer Genome Atlas', 'Disease', 'MESH:D009369', (43, 62)) ('mutations', 'Var', (273, 282)) ('metastases', 'Disease', (140, 150)) ('pseudohypoxia', 'Disease', 'None', (424, 437)) ('SDHB', 'Gene', '6390', (212, 216)) ('MAML3', 'Gene', (237, 242)) ('SETD2', 'Gene', '29072', (286, 291)) ('SDHB', 'Gene', (212, 216)) ('metastases', 'Disease', 'MESH:D009362', (140, 150)) ('SETD2', 'Gene', (286, 291)) ('Cancer', 'Phenotype', 'HP:0002664', (43, 49)) 104279 30769931 In addition, the mammalian Target Of Rapamycin (mTOR) pathway has been found dysregulated in metastatic PPGLs and display activation in tumors associated to SDHx gene mutations. ('tumors', 'Disease', (136, 142)) ('mTOR', 'Gene', '2475', (48, 52)) ('tumors', 'Disease', 'MESH:D009369', (136, 142)) ('PGLs', 'Phenotype', 'HP:0002668', (105, 109)) ('tumors', 'Phenotype', 'HP:0002664', (136, 142)) ('mTOR', 'Gene', (48, 52)) ('mutations', 'Var', (167, 176)) ('SDHx', 'Gene', (157, 161)) ('activation', 'PosReg', (122, 132)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) ('mammalian Target Of Rapamycin', 'Gene', (17, 46)) ('PGL', 'Phenotype', 'HP:0002668', (105, 108)) ('PPGLs', 'Chemical', '-', (104, 109)) ('mammalian Target Of Rapamycin', 'Gene', '2475', (17, 46)) 104297 30769931 Significant markers include constitutional mutations in SDHB, somatic mutations in ATRX and SETD2 or a high somatic mutational burden in total, TERT gene abberancies, gene fusions involving MAML3, a hypermethylation subtype and the two mRNA clustering subtypes: the pseudohypoxia (cluster 1) and the Wnt-altered (cluster 2). ('SDHB', 'Gene', '6390', (56, 60)) ('mutations', 'Var', (70, 79)) ('SDHB', 'Gene', (56, 60)) ('SETD2', 'Gene', '29072', (92, 97)) ('pseudohypoxia', 'Disease', (266, 279)) ('ATRX', 'Gene', (83, 87)) ('TERT', 'Gene', (144, 148)) ('SETD2', 'Gene', (92, 97)) ('TERT', 'Gene', '7015', (144, 148)) ('pseudohypoxia', 'Disease', 'None', (266, 279)) ('mutations', 'Var', (43, 52)) ('MAML3', 'Gene', '55534', (190, 195)) ('ATRX', 'Gene', '546', (83, 87)) ('MAML3', 'Gene', (190, 195)) ('gene fusions', 'Var', (167, 179)) 104303 30769931 Moreover, next-generation sequencing data identifying pathogenic mutations within cluster 1 or 2 could in theory improve the "rule-in" aspect of the prognostication, but this approach needs to be validated in larger tumor cohorts. ('tumor', 'Disease', (216, 221)) ('tumor', 'Disease', 'MESH:D009369', (216, 221)) ('tumor', 'Phenotype', 'HP:0002664', (216, 221)) ('mutations', 'Var', (65, 74)) ('improve', 'PosReg', (113, 120)) 104307 30400878 Some studies also suggest that CDG mutations contribute to cancer-associated epigenomic and transcriptomic alterations across many cancer types. ('cancer', 'Disease', (131, 137)) ('epigenomic', 'MPA', (77, 87)) ('cancer', 'Phenotype', 'HP:0002664', (131, 137)) ('transcriptomic alterations', 'MPA', (92, 118)) ('cancer', 'Phenotype', 'HP:0002664', (59, 65)) ('contribute', 'Reg', (45, 55)) ('CDG', 'Gene', (31, 34)) ('cancer', 'Disease', 'MESH:D009369', (59, 65)) ('cancer', 'Disease', (59, 65)) ('cancer', 'Disease', 'MESH:D009369', (131, 137)) ('CDG', 'Chemical', '-', (31, 34)) ('mutations', 'Var', (35, 44)) 104308 30400878 Here we aim to improve our understanding of the connections between CDG mutations and altered cancer cell epigenomes and transcriptomes on pan-cancer level and how these connections contribute to the known association between epigenome and transcriptome. ('mutations', 'Var', (72, 81)) ('cancer', 'Phenotype', 'HP:0002664', (143, 149)) ('CDG', 'Gene', (68, 71)) ('cancer', 'Phenotype', 'HP:0002664', (94, 100)) ('cancer', 'Disease', (143, 149)) ('cancer', 'Disease', 'MESH:D009369', (143, 149)) ('CDG', 'Chemical', '-', (68, 71)) ('cancer', 'Disease', (94, 100)) ('cancer', 'Disease', 'MESH:D009369', (94, 100)) 104314 30400878 Cancer arises through accumulation of somatically acquired genetic and epigenetic aberrations that lead to malignant transformation. ('epigenetic aberrations', 'Var', (71, 93)) ('lead to', 'Reg', (99, 106)) ('malignant transformation', 'CPA', (107, 131)) ('genetic', 'Var', (59, 66)) ('Cancer', 'Disease', (0, 6)) ('Cancer', 'Phenotype', 'HP:0002664', (0, 6)) ('Cancer', 'Disease', 'MESH:D009369', (0, 6)) 104315 30400878 Comprehensive characterization of somatic mutations in cancer genomes using next-generation sequencing technology has led to discoveries of cancer driver genes (CDGs) in human cancers. ('cancers', 'Disease', (176, 183)) ('cancers', 'Disease', 'MESH:D009369', (176, 183)) ('CDGs', 'Chemical', '-', (161, 165)) ('cancers', 'Phenotype', 'HP:0002664', (176, 183)) ('cancer', 'Phenotype', 'HP:0002664', (55, 61)) ('cancer', 'Phenotype', 'HP:0002664', (176, 182)) ('cancer', 'Disease', (140, 146)) ('cancer', 'Disease', 'MESH:D009369', (140, 146)) ('human', 'Species', '9606', (170, 175)) ('cancer', 'Disease', 'MESH:D009369', (55, 61)) ('cancer', 'Phenotype', 'HP:0002664', (140, 146)) ('cancer', 'Disease', (176, 182)) ('cancer', 'Disease', 'MESH:D009369', (176, 182)) ('mutations', 'Var', (42, 51)) ('cancer', 'Disease', (55, 61)) 104316 30400878 Specifically, genome-wide change of DNA methylation was observed in patients with mutations in epigenetic regulators, affecting both the global levels of 5-methyl-cytosine (5mC) and the precise DNA methylation patterns in diverse regulatory sequences across the genome. ('affecting', 'Reg', (118, 127)) ('5mC', 'Chemical', 'MESH:D044503', (173, 176)) ('5-methyl-cytosine', 'Chemical', 'MESH:D044503', (154, 171)) ('patients', 'Species', '9606', (68, 76)) ('mutations', 'Var', (82, 91)) ('DNA methylation patterns', 'MPA', (194, 218)) ('change', 'Reg', (26, 32)) 104317 30400878 A recent study investigated associations between driver gene mutations and DNA methylation alterations across many cancer types, and identified associations between mutated driver genes and site-specific methylation changes as well as some genome-wide trends in specific cancer types. ('associations', 'Interaction', (144, 156)) ('associations', 'Interaction', (28, 40)) ('cancer', 'Disease', (115, 121)) ('cancer', 'Phenotype', 'HP:0002664', (271, 277)) ('mutations', 'Var', (61, 70)) ('cancer', 'Phenotype', 'HP:0002664', (115, 121)) ('cancer', 'Disease', 'MESH:D009369', (271, 277)) ('DNA', 'Gene', (75, 78)) ('cancer', 'Disease', (271, 277)) ('cancer', 'Disease', 'MESH:D009369', (115, 121)) 104319 30400878 However, it remains largely unknown how the CDG mutations contribute to changes in cancer cell epigenomes on a pan-cancer level. ('cancer', 'Disease', (115, 121)) ('CDG', 'Gene', (44, 47)) ('cancer', 'Phenotype', 'HP:0002664', (83, 89)) ('CDG', 'Chemical', '-', (44, 47)) ('cancer', 'Phenotype', 'HP:0002664', (115, 121)) ('changes', 'Reg', (72, 79)) ('cancer', 'Disease', 'MESH:D009369', (83, 89)) ('cancer', 'Disease', 'MESH:D009369', (115, 121)) ('mutations', 'Var', (48, 57)) ('cancer', 'Disease', (83, 89)) 104320 30400878 A better understanding of the connections between CDGs and altered cancer cell epigenomes is an important goal, particularly since mutations in epigenetic regulators could be novel targets for anti-cancer therapies. ('cancer', 'Disease', 'MESH:D009369', (67, 73)) ('cancer', 'Disease', 'MESH:D009369', (198, 204)) ('mutations', 'Var', (131, 140)) ('cancer', 'Disease', (67, 73)) ('cancer', 'Disease', (198, 204)) ('cancer', 'Phenotype', 'HP:0002664', (67, 73)) ('cancer', 'Phenotype', 'HP:0002664', (198, 204)) ('CDGs', 'Chemical', '-', (50, 54)) 104322 30400878 An integrative analysis of DNA methylation data and gene expression data of various cancer types identified pan-cancer hypo- and hyper-methylated genes that are predictive of transcription as well as methylation-driven subgroups with clinical implications. ('hypo-', 'Var', (119, 124)) ('cancer', 'Disease', 'MESH:D009369', (84, 90)) ('hyper-methylated', 'Var', (129, 145)) ('cancer', 'Disease', 'MESH:D009369', (112, 118)) ('cancer', 'Disease', (112, 118)) ('cancer', 'Disease', (84, 90)) ('cancer', 'Phenotype', 'HP:0002664', (84, 90)) ('cancer', 'Phenotype', 'HP:0002664', (112, 118)) 104324 30400878 Here we aim to improve our understanding of the connections between CDGs and altered cancer cell epigenomes and altered cancer cell transcriptome on pan-cancer level, and how these connections contribute to the known association between cancer epigenome and transcriptome. ('cancer', 'Disease', 'MESH:D009369', (153, 159)) ('cancer', 'Phenotype', 'HP:0002664', (120, 126)) ('cancer', 'Disease', (153, 159)) ('cancer', 'Phenotype', 'HP:0002664', (237, 243)) ('cancer', 'Disease', 'MESH:D009369', (85, 91)) ('CDGs', 'Chemical', '-', (68, 72)) ('cancer', 'Disease', (120, 126)) ('cancer', 'Disease', 'MESH:D009369', (120, 126)) ('cancer', 'Disease', (85, 91)) ('cancer', 'Phenotype', 'HP:0002664', (153, 159)) ('CDGs', 'Var', (68, 72)) ('cancer', 'Disease', 'MESH:D009369', (237, 243)) ('cancer', 'Disease', (237, 243)) ('cancer', 'Phenotype', 'HP:0002664', (85, 91)) 104325 30400878 We used somatic mutation, DNA methylation, and gene expression data of 20 cancer types from The Cancer Genome Atlas (TCGA) project to identify CDGs that, when mutated, have strong associations with genome-wide methylation or expression changes across cancer types, which we refer as methylation driver genes (MDGs) or expression driver genes (EDGs). ('CDGs', 'Chemical', '-', (143, 147)) ('expression changes', 'MPA', (225, 243)) ('mutated', 'Var', (159, 166)) ('methylation', 'MPA', (210, 221)) ('cancer', 'Phenotype', 'HP:0002664', (251, 257)) ('CDGs', 'Gene', (143, 147)) ('MDG', 'Gene', (309, 312)) ('associations', 'Interaction', (180, 192)) ('EDG', 'Chemical', '-', (343, 346)) ('MDG', 'Gene', '4350', (309, 312)) ('cancer', 'Disease', 'MESH:D009369', (74, 80)) ('Cancer Genome Atlas', 'Disease', (96, 115)) ('cancer', 'Disease', (74, 80)) ('Cancer', 'Phenotype', 'HP:0002664', (96, 102)) ('cancer', 'Disease', 'MESH:D009369', (251, 257)) ('Cancer Genome Atlas', 'Disease', 'MESH:D009369', (96, 115)) ('cancer', 'Disease', (251, 257)) ('cancer', 'Phenotype', 'HP:0002664', (74, 80)) 104328 30400878 This finding shows that dysregulation of chromatin regulators is potentially an important mechanism that induces global change of DNA methylation and gene expression in tumor development. ('tumor', 'Disease', 'MESH:D009369', (169, 174)) ('DNA methylation', 'MPA', (130, 145)) ('dysregulation', 'Var', (24, 37)) ('tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('tumor', 'Disease', (169, 174)) 104331 30400878 We then corrected for the type I/II probe bias using the BMIQ algorithm We obtained level 2 somatic mutation data of the above-mentioned 20 tumor types from Broad Institute TCGA Genome Data Analysis Center Firehose and selected candidate CDGs using the MutSIG algorithm that tests how frequently a gene is mutated in a tumor type comparing to the background mutation rate. ('tumor', 'Disease', 'MESH:D009369', (141, 146)) ('tumor', 'Disease', 'MESH:D009369', (320, 325)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('tumor', 'Phenotype', 'HP:0002664', (320, 325)) ('mutated', 'Var', (307, 314)) ('tumor', 'Disease', (141, 146)) ('tumor', 'Disease', (320, 325)) ('CDGs', 'Chemical', '-', (239, 243)) 104336 30400878 To conduct pan-cancer analysis associating mutation and methylation/expression, within a tumor type, we selected CDGs that have mutations in at least 5 samples with matched methylation data or expression data in order to have not-too-sparse numbers in the mutated group. ('CDGs', 'Gene', (113, 117)) ('cancer', 'Disease', (15, 21)) ('mutations', 'Var', (128, 137)) ('cancer', 'Disease', 'MESH:D009369', (15, 21)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) ('CDGs', 'Chemical', '-', (113, 117)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('tumor', 'Disease', (89, 94)) ('cancer', 'Phenotype', 'HP:0002664', (15, 21)) 104343 30400878 For the 422 CDGs, the number of tumor types in which a CDG is mutated in at least five samples varies from 1 to 14 (Additional file 2: Table S2), where TP53 and PTEN were mutated in 14 tumor types. ('tumor', 'Disease', (185, 190)) ('TP53', 'Gene', '7157', (152, 156)) ('tumor', 'Disease', 'MESH:D009369', (32, 37)) ('CDGs', 'Chemical', '-', (12, 16)) ('PTEN', 'Gene', (161, 165)) ('CDG i', 'Chemical', '-', (55, 60)) ('tumor', 'Disease', 'MESH:D009369', (185, 190)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('TP53', 'Gene', (152, 156)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('mutated', 'Var', (171, 178)) ('tumor', 'Disease', (32, 37)) ('PTEN', 'Gene', '5728', (161, 165)) 104346 30400878 We then determine the hyper- or hypo-methylation status per CpG site by the mutation status of CDG i using the nonparametric Wilcoxon test. ('mutation', 'Var', (76, 84)) ('CDG i', 'Gene', (95, 100)) ('CDG i', 'Chemical', '-', (95, 100)) ('hyper-', 'MPA', (22, 28)) 104349 30400878 To determine if mutation status of CDG i is significantly associated with genome-wide methylation changes in cancer type k, we calculate the p-value pi,k, which is the probability of observing the number of differentially (hyper- or hypo-) methylated sites or more that are associated with the mutation status of CDG i in cancer type k under the null hypothesis that the mutation status of CDG i is not associated with genome-wide methylation changes. ('cancer', 'Disease', 'MESH:D009369', (323, 329)) ('mutation', 'Var', (16, 24)) ('cancer', 'Disease', (323, 329)) ('cancer', 'Disease', 'MESH:D009369', (109, 115)) ('CDG i', 'Chemical', '-', (391, 396)) ('mutation', 'Var', (295, 303)) ('cancer', 'Disease', (109, 115)) ('CDG i', 'Chemical', '-', (35, 40)) ('cancer', 'Phenotype', 'HP:0002664', (323, 329)) ('CDG i', 'Chemical', '-', (314, 319)) ('cancer', 'Phenotype', 'HP:0002664', (109, 115)) ('CDG i', 'Gene', (314, 319)) 104360 30400878 We classify the effect of CDG i on genome-wide methylation in tumor type k as: To calculate the p-value, pi, testing if CDG i is significantly associated with genome-wide methylation changes across multiple cancer types, we compare , the observed total number of differentially methylated sites associated with CDG i summed over Ai cancer types, to B resampled values generated from the "methylation null pool" where we set B=one million. ('differentially', 'Var', (263, 277)) ('CDG i', 'Chemical', '-', (311, 316)) ('cancer', 'Disease', 'MESH:D009369', (207, 213)) ('cancer', 'Phenotype', 'HP:0002664', (332, 338)) ('tumor', 'Phenotype', 'HP:0002664', (62, 67)) ('cancer', 'Disease', (207, 213)) ('CDG i', 'Gene', (311, 316)) ('tumor', 'Disease', (62, 67)) ('cancer', 'Disease', 'MESH:D009369', (332, 338)) ('cancer', 'Disease', (332, 338)) ('cancer', 'Phenotype', 'HP:0002664', (207, 213)) ('CDG i', 'Chemical', '-', (120, 125)) ('tumor', 'Disease', 'MESH:D009369', (62, 67)) ('CDG i', 'Chemical', '-', (26, 31)) 104370 30400878 We first tested whether mutations in a CDG are significantly associated with changes in genome-wide methylation patterns in one cancer type. ('cancer', 'Disease', 'MESH:D009369', (128, 134)) ('changes', 'Reg', (77, 84)) ('genome-wide methylation patterns', 'MPA', (88, 120)) ('CDG', 'Gene', (39, 42)) ('CDG', 'Chemical', '-', (39, 42)) ('cancer', 'Phenotype', 'HP:0002664', (128, 134)) ('mutations', 'Var', (24, 33)) ('associated', 'Reg', (61, 71)) ('cancer', 'Disease', (128, 134)) 104372 30400878 We then used the number of genome-wide differentially methylated sites as the test statistic to measure degree of genome-wide methylation changes associated with the mutation status of a CDG for one cancer type. ('cancer', 'Phenotype', 'HP:0002664', (199, 205)) ('CDG', 'Chemical', '-', (187, 190)) ('cancer', 'Disease', 'MESH:D009369', (199, 205)) ('cancer', 'Disease', (199, 205)) ('CDG', 'Gene', (187, 190)) ('mutation', 'Var', (166, 174)) 104373 30400878 To assess the significance of the genome-wide methylation changes by a CDG in one cancer type, we first generated an empirical null distribution with numbers of genome-wide differentially methylated sites by mutations of non-CDGs and then calculated the p-value pi,k for CDG i in cancer type k by comparing the number of genome-wide differentially methylated sites by the mutation of CDG i in cancer type k with the empirical null distribution. ('cancer', 'Disease', (393, 399)) ('CDG i', 'Chemical', '-', (384, 389)) ('cancer', 'Disease', 'MESH:D009369', (280, 286)) ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('cancer', 'Disease', (280, 286)) ('CDG i', 'Chemical', '-', (271, 276)) ('cancer', 'Phenotype', 'HP:0002664', (393, 399)) ('cancer', 'Disease', (82, 88)) ('cancer', 'Disease', 'MESH:D009369', (82, 88)) ('CDG i', 'Gene', (384, 389)) ('mutation', 'Var', (372, 380)) ('CDGs', 'Chemical', '-', (225, 229)) ('cancer', 'Phenotype', 'HP:0002664', (280, 286)) ('CDG i', 'Chemical', '-', (71, 76)) ('cancer', 'Disease', 'MESH:D009369', (393, 399)) 104374 30400878 We then classify the effect of CDG i in tumor type k as hyper-methylated if pi,k<0.05 and the number of genome-wide hyper-methylated sites is greater than that of hypo-methylated sites or hypo-methylated if pi,k<0.05 and the number of genome-wide hypo-methylated sites is greater than that of hyper-methylated sites. ('k<0.05', 'Var', (79, 85)) ('CDG i', 'Gene', (31, 36)) ('tumor', 'Disease', 'MESH:D009369', (40, 45)) ('CDG i', 'Chemical', '-', (31, 36)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('tumor', 'Disease', (40, 45)) 104381 30400878 For the complete list of CDGs whose mutation states were significantly associated with genome-wide methylation changes within each cancer type (gene i with pi,k<0.05 in the cancer type k), see Additional file 5: Table S4. ('cancer', 'Disease', (131, 137)) ('cancer', 'Disease', 'MESH:D009369', (173, 179)) ('CDGs', 'Chemical', '-', (25, 29)) ('cancer', 'Disease', (173, 179)) ('cancer', 'Phenotype', 'HP:0002664', (131, 137)) ('CDGs', 'Gene', (25, 29)) ('cancer', 'Phenotype', 'HP:0002664', (173, 179)) ('methylation changes', 'MPA', (99, 118)) ('cancer', 'Disease', 'MESH:D009369', (131, 137)) ('associated', 'Reg', (71, 81)) ('mutation', 'Var', (36, 44)) 104383 30400878 They used Principal Component Analysis (PCA) to identify driver genes whose mutations are associated with the top five PCs within each cancer. ('cancer', 'Disease', (135, 141)) ('mutations', 'Var', (76, 85)) ('cancer', 'Phenotype', 'HP:0002664', (135, 141)) ('associated', 'Reg', (90, 100)) ('cancer', 'Disease', 'MESH:D009369', (135, 141)) 104384 30400878 The 32 MDGs were mutated with different frequencies in each cancer types (Additional file 6: Figure S1) and the mutation status of the 32 MDGs is associated with different genome-wide number of hyper- and hypo-methylated sites (Fig. ('mutation', 'Var', (112, 120)) ('MDG', 'Gene', (7, 10)) ('cancer', 'Disease', 'MESH:D009369', (60, 66)) ('MDG', 'Gene', '4350', (7, 10)) ('MDG', 'Gene', (138, 141)) ('cancer', 'Disease', (60, 66)) ('MDG', 'Gene', '4350', (138, 141)) ('cancer', 'Phenotype', 'HP:0002664', (60, 66)) 104387 30400878 In CESC, LUSC, PAAD, and SARC tumor types, genome-wide methylation patterns were not significantly affected by mutations of any of the identified 32 MDGs, potentially due to small sample sizes or fewer number of CDGs. ('mutations', 'Var', (111, 120)) ('SARC tumor', 'Disease', (25, 35)) ('CDGs', 'Chemical', '-', (212, 216)) ('SARC tumor', 'Phenotype', 'HP:0100242', (25, 35)) ('MDG', 'Gene', (149, 152)) ('SARC tumor', 'Disease', 'MESH:D009369', (25, 35)) ('MDG', 'Gene', '4350', (149, 152)) ('LUSC', 'Disease', (9, 13)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('methylation patterns', 'MPA', (55, 75)) ('CESC', 'Disease', (3, 7)) 104388 30400878 TP53 mutations are associated with significant genome-wide methylation changes in 8 out of the 15 tumor types in which it was mutated in more than 5 samples (Table 1). ('TP53', 'Gene', '7157', (0, 4)) ('methylation changes', 'MPA', (59, 78)) ('TP53', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('15 tumor', 'Disease', (95, 103)) ('15 tumor', 'Disease', 'MESH:C567447', (95, 103)) 104389 30400878 Among these 8 tumor types, more CpG sites were hypo-methylated in all but LGG. ('hypo-methylated', 'Var', (47, 62)) ('tumor', 'Disease', (14, 19)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) ('tumor', 'Disease', 'MESH:D009369', (14, 19)) 104390 30400878 Instead, in LGG, TP53 mutations are associated with more hyper-methylated CpG sites. ('hyper-methylated', 'MPA', (57, 73)) ('mutations', 'Var', (22, 31)) ('more', 'PosReg', (52, 56)) ('TP53', 'Gene', '7157', (17, 21)) ('TP53', 'Gene', (17, 21)) 104391 30400878 However, almost all LGG tumors with TP53 mutations also have IDH1 mutations (Additional file 6: Figure S1), which are known to lead to hyper-methylation in LGG. ('mutations', 'Var', (41, 50)) ('LGG tumors', 'Disease', (20, 30)) ('mutations', 'Var', (66, 75)) ('tumor', 'Phenotype', 'HP:0002664', (24, 29)) ('lead', 'Reg', (127, 131)) ('LGG tumors', 'Disease', 'MESH:D009369', (20, 30)) ('tumors', 'Phenotype', 'HP:0002664', (24, 30)) ('IDH1', 'Gene', '3417', (61, 65)) ('TP53', 'Gene', '7157', (36, 40)) ('IDH1', 'Gene', (61, 65)) ('TP53', 'Gene', (36, 40)) ('hyper-methylation', 'MPA', (135, 152)) 104393 30400878 Given the prominent role of IDH1 in LGG, we stratified LGG tumor samples by the IDH1 mutation status and further examined the effect of the other 31 MDGs within the IDH1 mutation stratum and the IDH1 wild-type stratum and found that TP53 mutations are now significantly associated with more hypo-methylation genome-wide in each stratum (Additional file 3: Text S1). ('LGG tumor', 'Disease', 'MESH:D009369', (55, 64)) ('IDH1', 'Gene', '3417', (28, 32)) ('hypo-methylation', 'MPA', (291, 307)) ('IDH1', 'Gene', '3417', (195, 199)) ('associated', 'Reg', (270, 280)) ('IDH1', 'Gene', (80, 84)) ('mutations', 'Var', (238, 247)) ('IDH1', 'Gene', (165, 169)) ('more', 'PosReg', (286, 290)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) ('TP53', 'Gene', (233, 237)) ('IDH1', 'Gene', '3417', (80, 84)) ('MDG', 'Gene', (149, 152)) ('IDH1', 'Gene', (195, 199)) ('IDH1', 'Gene', '3417', (165, 169)) ('IDH1', 'Gene', (28, 32)) ('MDG', 'Gene', '4350', (149, 152)) ('LGG tumor', 'Disease', (55, 64)) ('TP53', 'Gene', '7157', (233, 237)) 104394 30400878 Similar stratified analyses were conducted in all other tumor types whose genome-wide methylation patterns were significantly associated with mutations of the identified MDGs. ('mutations', 'Var', (142, 151)) ('associated', 'Reg', (126, 136)) ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('tumor', 'Disease', (56, 61)) ('MDG', 'Gene', (170, 173)) ('MDG', 'Gene', '4350', (170, 173)) ('tumor', 'Disease', 'MESH:D009369', (56, 61)) 104397 30400878 To test this hypothesis, we examined whether mutations of these 24 MDGs are associated with the expression changes of known epigenomic regulator genes across the 20 tumor types, where we used the exon level RNA-Seq data of the 20 tumor tissue types from TCGA. ('tumor', 'Disease', (230, 235)) ('mutations', 'Var', (45, 54)) ('tumor', 'Phenotype', 'HP:0002664', (230, 235)) ('expression', 'MPA', (96, 106)) ('associated', 'Reg', (76, 86)) ('tumor', 'Disease', 'MESH:D009369', (165, 170)) ('tumor', 'Disease', 'MESH:D009369', (230, 235)) ('tumor', 'Phenotype', 'HP:0002664', (165, 170)) ('MDG', 'Gene', (67, 70)) ('MDG', 'Gene', '4350', (67, 70)) ('tumor', 'Disease', (165, 170)) 104402 30400878 For each of these 12 genes, we first identified genome-wide target genes whose expression levels were dysregulated by the mutation status commonly across tumor types. ('expression levels', 'MPA', (79, 96)) ('mutation', 'Var', (122, 130)) ('tumor', 'Disease', 'MESH:D009369', (154, 159)) ('tumor', 'Phenotype', 'HP:0002664', (154, 159)) ('tumor', 'Disease', (154, 159)) 104409 30400878 For example, TP53 mutations are associated with upregulated KDM1A expression levels across all tumor types whose genome-wide methylation patterns are also significantly associated with TP53 mutations. ('TP53', 'Gene', (13, 17)) ('TP53', 'Gene', (185, 189)) ('expression levels', 'MPA', (66, 83)) ('mutations', 'Var', (190, 199)) ('KDM1A', 'Gene', '23028', (60, 65)) ('TP53', 'Gene', '7157', (185, 189)) ('tumor', 'Disease', 'MESH:D009369', (95, 100)) ('KDM1A', 'Gene', (60, 65)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('upregulated', 'PosReg', (48, 59)) ('TP53', 'Gene', '7157', (13, 17)) ('tumor', 'Disease', (95, 100)) ('mutations', 'Var', (18, 27)) 104410 30400878 KDM1A is known to physically interact with TP53 and it demethylates histone lysine residues 9 of histone 3, which in turn leads to extensive hypo-methylation in that region. ('lysine', 'Chemical', 'MESH:D008239', (76, 82)) ('hypo-methylation', 'MPA', (141, 157)) ('leads to', 'Reg', (122, 130)) ('TP53', 'Gene', '7157', (43, 47)) ('KDM1A', 'Gene', '23028', (0, 5)) ('demethylates', 'Var', (55, 67)) ('KDM1A', 'Gene', (0, 5)) ('TP53', 'Gene', (43, 47)) 104411 30400878 This analysis suggests that KDM1A may play a role in the association between TP53 mutations and genome-wide hypo-methylation changes across tumor types. ('tumor', 'Disease', (140, 145)) ('tumor', 'Disease', 'MESH:D009369', (140, 145)) ('mutations', 'Var', (82, 91)) ('KDM1A', 'Gene', '23028', (28, 33)) ('association', 'Interaction', (57, 68)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('TP53', 'Gene', '7157', (77, 81)) ('TP53', 'Gene', (77, 81)) ('KDM1A', 'Gene', (28, 33)) 104417 30400878 We found only a small fraction of genes in list B whose expression and methylation levels are both associated with the mutation status of the MDGs (Table 2), which suggests that the differential expression of these target genes may be directly associated with mutations of these MDGs instead of being indirectly associated through changes in their methylation patterns. ('expression', 'MPA', (195, 205)) ('MDG', 'Gene', (279, 282)) ('MDG', 'Gene', '4350', (279, 282)) ('expression', 'MPA', (56, 66)) ('associated', 'Reg', (244, 254)) ('MDG', 'Gene', (142, 145)) ('MDG', 'Gene', '4350', (142, 145)) ('mutations', 'Var', (260, 269)) ('associated', 'Reg', (99, 109)) 104418 30400878 We further investigated mutation status of genes in list B to examine if the mutations affect their expression or methylation levels directly and found that the majority of genes in list B were rarely mutated across tumor types (Additional file 8: Table S6). ('tumor', 'Disease', (216, 221)) ('affect', 'Reg', (87, 93)) ('list B', 'Gene', (182, 188)) ('expression', 'MPA', (100, 110)) ('mutations', 'Var', (77, 86)) ('tumor', 'Disease', 'MESH:D009369', (216, 221)) ('tumor', 'Phenotype', 'HP:0002664', (216, 221)) ('methylation levels', 'MPA', (114, 132)) 104419 30400878 Although CIC was not included in the above analyses since it was mutated only in LGG, due to its important role in LGG tumors, we examined how CIC regulates expressions of target genes and found that chromatin remodeling genes in list A were significantly enriched among dysregulated target genes, in both full LGG tumor samples and in stratified samples by IDH1 mutation status (Additional file 9: Table S7). ('tumors', 'Phenotype', 'HP:0002664', (119, 125)) ('LGG tumor', 'Disease', 'MESH:D009369', (115, 124)) ('CIC', 'Gene', '23152', (9, 12)) ('mutation', 'Var', (363, 371)) ('LGG tumor', 'Disease', (311, 320)) ('IDH1', 'Gene', '3417', (358, 362)) ('LGG tumors', 'Disease', (115, 125)) ('CIC', 'Gene', (9, 12)) ('LGG tumor', 'Disease', 'MESH:D009369', (311, 320)) ('CIC', 'Gene', '23152', (143, 146)) ('LGG tumors', 'Disease', 'MESH:D009369', (115, 125)) ('tumor', 'Phenotype', 'HP:0002664', (315, 320)) ('CIC', 'Gene', (143, 146)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('IDH1', 'Gene', (358, 362)) 104422 30400878 The mutation status of these 29 EDGs is associated with different genome-wide number of up- and down-regulated genes (Fig. ('EDG', 'Chemical', '-', (32, 35)) ('up-', 'PosReg', (88, 91)) ('down-regulated', 'NegReg', (96, 110)) ('mutation', 'Var', (4, 12)) 104423 30400878 For the complete list of CDGs whose mutation states were significantly associated with genome-wide expression changes within each cancer type, see Additional file 10: Table S8. ('CDGs', 'Chemical', '-', (25, 29)) ('cancer', 'Disease', 'MESH:D009369', (130, 136)) ('cancer', 'Disease', (130, 136)) ('cancer', 'Phenotype', 'HP:0002664', (130, 136)) ('associated', 'Reg', (71, 81)) ('mutation', 'Var', (36, 44)) 104425 30400878 To understand this high rate of overlap, within each cancer type, we examined the overlap between CDGs that are significantly associated with genome-wide methylation changes and CDGs that are significantly associated with genome-wide expression changes, and found they overlap highly. ('associated', 'Reg', (126, 136)) ('CDGs', 'Disease', (98, 102)) ('cancer', 'Disease', (53, 59)) ('methylation changes', 'Var', (154, 173)) ('cancer', 'Disease', 'MESH:D009369', (53, 59)) ('CDGs', 'Chemical', '-', (178, 182)) ('cancer', 'Phenotype', 'HP:0002664', (53, 59)) ('CDGs', 'Chemical', '-', (98, 102)) 104428 30400878 A specific example of a target gene that is hypo-methylated and up-regulated by the mutation of TP53 is HSF1 gene. ('TP53', 'Gene', (96, 100)) ('HSF1', 'Gene', (104, 108)) ('HSF1', 'Gene', '3297', (104, 108)) ('up-regulated', 'PosReg', (64, 76)) ('TP53', 'Gene', '7157', (96, 100)) ('mutation', 'Var', (84, 92)) 104429 30400878 It is hypo-methylated and up-regulated by TP53 mutations across 9 tumor types. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('TP53', 'Gene', '7157', (42, 46)) ('tumor', 'Disease', (66, 71)) ('TP53', 'Gene', (42, 46)) ('mutations', 'Var', (47, 56)) ('up-regulated', 'PosReg', (26, 38)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) 104431 30400878 For each CDG, for every pair of tumor types in which it is mutated in more than five samples, we tested using a hypergeometric distribution if the number of overlapping target genes that are differentially methylated by the mutation of the CDG is larger than expected. ('tested', 'Reg', (97, 103)) ('CDG', 'Chemical', '-', (240, 243)) ('CDG', 'Chemical', '-', (9, 12)) ('CDG i', 'Chemical', '-', (240, 245)) ('tumor', 'Disease', 'MESH:D009369', (32, 37)) ('mutation', 'Var', (224, 232)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('CDG', 'Gene', (240, 243)) ('tumor', 'Disease', (32, 37)) 104435 30400878 Our findings on how CDG mutations contribute to pan-cancer-associated epigenomic alterations and transcriptomic alterations suggest that there are potentially three mechanisms (Fig. ('cancer', 'Phenotype', 'HP:0002664', (52, 58)) ('contribute', 'Reg', (34, 44)) ('CDG', 'Gene', (20, 23)) ('epigenomic alterations', 'MPA', (70, 92)) ('cancer', 'Disease', (52, 58)) ('cancer', 'Disease', 'MESH:D009369', (52, 58)) ('mutations', 'Var', (24, 33)) ('CDG', 'Chemical', '-', (20, 23)) 104436 30400878 We conducted a pan-cancer analysis to identify CDGs whose somatic mutations are associated with genome-wide methylation/expression changes across multiple cancer types. ('mutations', 'Var', (66, 75)) ('methylation/expression', 'MPA', (108, 130)) ('cancer', 'Disease', 'MESH:D009369', (19, 25)) ('CDGs', 'Gene', (47, 51)) ('cancer', 'Phenotype', 'HP:0002664', (155, 161)) ('cancer', 'Disease', (19, 25)) ('CDGs', 'Chemical', '-', (47, 51)) ('associated', 'Reg', (80, 90)) ('cancer', 'Phenotype', 'HP:0002664', (19, 25)) ('cancer', 'Disease', (155, 161)) ('cancer', 'Disease', 'MESH:D009369', (155, 161)) 104437 30400878 We used a straightforward method to compare methylation/expression levels between mutated and non-mutated groups of each CDG. ('methylation/expression', 'MPA', (44, 66)) ('mutated', 'Var', (82, 89)) ('CDG', 'Chemical', '-', (121, 124)) 104449 30400878 To identify TERT-independent TL regulation, they associated somatic alterations of 196 telomere-associated genes to TL ratio between matching tumor and normal samples and found alterations of ATRX, IDH1, TP53, BCOR, and RB1 were significantly associated with relative TL elongation under FDR<0.05. ('RB1', 'Gene', (220, 223)) ('associated with', 'Reg', (243, 258)) ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('relative TL elongation', 'CPA', (259, 281)) ('BCOR', 'Gene', (210, 214)) ('TERT', 'Gene', '7015', (12, 16)) ('ATRX', 'Gene', (192, 196)) ('BCOR', 'Gene', '54880', (210, 214)) ('RB1', 'Gene', '5925', (220, 223)) ('tumor', 'Disease', (142, 147)) ('alterations', 'Var', (177, 188)) ('IDH1', 'Gene', (198, 202)) ('ATRX', 'Gene', '546', (192, 196)) ('TP53', 'Gene', '7157', (204, 208)) ('IDH1', 'Gene', '3417', (198, 202)) ('TP53', 'Gene', (204, 208)) ('tumor', 'Disease', 'MESH:D009369', (142, 147)) ('TERT', 'Gene', (12, 16)) 104451 30400878 In a recent review by Feinberg et al., an epigenetic functional classification system was introduced that classifies epigenetic genes into three categories 1) "epigenetic mediators", which correspond to tumor progenitor genes that are targets of epigenetic modification; 2) "epigenetic modifiers", which modify DNA methylation or chromatin structure; and 3) "epigenetic modulators", which influence activities of epigenetic modifiers to destabilize epigenetic states. ('DNA', 'MPA', (311, 314)) ('tumor', 'Disease', (203, 208)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('epigenetic states', 'MPA', (449, 466)) ('modifiers', 'Var', (286, 295)) ('modulators', 'Var', (370, 380)) ('modify', 'Reg', (304, 310)) ('activities', 'MPA', (399, 409)) ('tumor', 'Disease', 'MESH:D009369', (203, 208)) ('influence', 'Reg', (389, 398)) 104453 30400878 Further analysis that examined whether mutations of 12 MDGs out of these 24 MDGs are associated with the expression of known epigenetic modifiers across cancer types supports our mechanistic hypothesis that some of these MDGs are the ones that regulate expression of chromatin regulators. ('cancer', 'Disease', 'MESH:D009369', (153, 159)) ('expression', 'MPA', (253, 263)) ('cancer', 'Disease', (153, 159)) ('mutations', 'Var', (39, 48)) ('MDG', 'Gene', (55, 58)) ('cancer', 'Phenotype', 'HP:0002664', (153, 159)) ('regulate', 'Reg', (244, 252)) ('MDG', 'Gene', (76, 79)) ('MDG', 'Gene', '4350', (55, 58)) ('MDG', 'Gene', '4350', (76, 79)) ('MDG', 'Gene', '4350', (221, 224)) ('MDG', 'Gene', (221, 224)) ('associated', 'Reg', (85, 95)) 104456 30400878 BRAF mutation is known to be tightly associated with a CpG island methylator phenotype (CIMP) and alteration of SWI/SNF chromatin remodeling pathway. ('SWI/SNF chromatin remodeling pathway', 'Pathway', (112, 148)) ('BRAF', 'Gene', '673', (0, 4)) ('alteration', 'Reg', (98, 108)) ('associated', 'Reg', (37, 47)) ('BRAF', 'Gene', (0, 4)) ('mutation', 'Var', (5, 13)) 104468 30400878 Note that CIC mutations are associated with hyper-methylation in LGG both among IDH1 wild-type tumors and IDH1 mutated tumors. ('CIC', 'Gene', (10, 13)) ('tumors', 'Phenotype', 'HP:0002664', (119, 125)) ('mutations', 'Var', (14, 23)) ('IDH1', 'Gene', (80, 84)) ('tumors', 'Disease', 'MESH:D009369', (95, 101)) ('tumors', 'Disease', (119, 125)) ('hyper-methylation', 'MPA', (44, 61)) ('tumors', 'Disease', 'MESH:D009369', (119, 125)) ('IDH1', 'Gene', '3417', (80, 84)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) ('IDH1', 'Gene', (106, 110)) ('CIC', 'Gene', '23152', (10, 13)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('IDH1', 'Gene', '3417', (106, 110)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('tumors', 'Disease', (95, 101)) ('LGG', 'Gene', (65, 68)) 104469 30400878 Further studies are needed to investigate if the observed clinical and biological impact of CIC mutations in LGG is through hyper-methylation of the epigenome. ('LGG', 'Gene', (109, 112)) ('CIC', 'Gene', '23152', (92, 95)) ('CIC', 'Gene', (92, 95)) ('mutations', 'Var', (96, 105)) 104470 30400878 In this study, we identified CDGs whose somatic mutations are associated with pan-cancer genome-wide methylation/expression changes by using a simple and straightforward method to compare methylation or expression levels between mutated and non-mutated groups of each CDG. ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('CDG', 'Chemical', '-', (268, 271)) ('associated', 'Reg', (62, 72)) ('expression', 'MPA', (203, 213)) ('cancer', 'Disease', (82, 88)) ('cancer', 'Disease', 'MESH:D009369', (82, 88)) ('CDG', 'Chemical', '-', (29, 32)) ('CDGs', 'Chemical', '-', (29, 33)) ('mutations', 'Var', (48, 57)) 104472 30400878 Our pan-cancer analysis examining connections between somatic mutation and DNA methylation/gene expression identified CDGs (32 MDGs and 29 EDGs) whose somatic mutations are associated with genome-wide methylation/expression changes across multiple cancer types. ('cancer', 'Disease', (248, 254)) ('MDG', 'Gene', (127, 130)) ('cancer', 'Disease', (8, 14)) ('MDG', 'Gene', '4350', (127, 130)) ('mutations', 'Var', (159, 168)) ('EDG', 'Chemical', '-', (139, 142)) ('cancer', 'Phenotype', 'HP:0002664', (248, 254)) ('cancer', 'Phenotype', 'HP:0002664', (8, 14)) ('cancer', 'Disease', 'MESH:D009369', (248, 254)) ('CDGs', 'Chemical', '-', (118, 122)) ('cancer', 'Disease', 'MESH:D009369', (8, 14)) 104475 30400878 These findings highlight that the dysregulation of chromatin regulation is an important mechanism that amplifies the impact of mutations in CDGs by global methylation and gene expression changes. ('CDGs', 'Chemical', '-', (140, 144)) ('dysregulation', 'Var', (34, 47)) ('gene expression', 'MPA', (171, 186)) ('CDGs', 'Gene', (140, 144)) ('mutations', 'Var', (127, 136)) ('changes', 'Reg', (187, 194)) 104504 29942158 PPGL diagnosis codes included 255.29 (ICD8), D350A, E275, R825A (ICD10), M8700, and S29740 (SNOMED). ('E275', 'Var', (52, 56)) ('S29740', 'Var', (84, 90)) ('255.29', 'Var', (30, 36)) ('R825A', 'Var', (58, 63)) ('M8700', 'Var', (73, 78)) ('D350A', 'Mutation', 'p.D350A', (45, 50)) ('PPGL', 'Chemical', '-', (0, 4)) ('R825A', 'Mutation', 'p.R825A', (58, 63)) ('D350A', 'Var', (45, 50)) 104535 29942158 ICD-8 (255.29) and -10 diagnosis codes (D350A, E275, and R825A) had an overall PPV of 21.7% (95% CI: 18.6-25.0) in the Danish National Patient Registry and 50.0% (95% CI: 26.0-74.0) in the Danish Registry of Causes of Death. ('R825A', 'Var', (57, 62)) ('D350A', 'Mutation', 'p.D350A', (40, 45)) ('D350A', 'Var', (40, 45)) ('E275', 'Var', (47, 51)) ('R825A', 'Mutation', 'p.R825A', (57, 62)) ('Patient', 'Species', '9606', (135, 142)) ('255.29', 'Var', (7, 13)) 104536 29942158 SNOMED diagnosis codes for PPGL (M8700 and S29740) in the Danish National Pathology Registry had a higher overall PPV than the two other health registries at 79.5% (95% CI: 73.4-84.8). ('higher', 'PosReg', (99, 105)) ('S29740', 'Var', (43, 49)) ('PPV', 'MPA', (114, 117)) ('PPGL', 'Chemical', '-', (27, 31)) ('M8700', 'Var', (33, 38)) ('PPGL', 'Gene', (27, 31)) 104538 29942158 Of these, thirty-one were refuted as incorrect entries (mainly miscoding of T8700 Ovary or M8720 Naevus), three as non-secreting paragangliomas, five due to a suspicion of PPGL later refuted by further examinations, and four by the expert panel as incorrect diagnoses of PPGL. ('paragangliomas', 'Phenotype', 'HP:0002668', (129, 143)) ('paraganglioma', 'Phenotype', 'HP:0002668', (129, 142)) ('M8720', 'Var', (91, 96)) ('PPGL', 'Chemical', '-', (271, 275)) ('paragangliomas', 'Disease', (129, 143)) ('PPGL', 'Chemical', '-', (172, 176)) ('Naevus', 'Phenotype', 'HP:0003764', (97, 103)) ('T8700 Ovary', 'Var', (76, 87)) ('paragangliomas', 'Disease', 'MESH:D010235', (129, 143)) 104543 29942158 We defined the examined tissue to be relevant if the pathological examination was registered as an autopsy (material code 31) or with a SNOMED code for either the adrenal glands (T93 and AEF4330), paraganglioma (T94, T95, M868, and M869), or the body as a whole (T0010). ('paraganglioma', 'Phenotype', 'HP:0002668', (197, 210)) ('paraganglioma', 'Disease', (197, 210)) ('M869', 'Var', (232, 236)) ('T94', 'Var', (212, 215)) ('M868', 'Var', (222, 226)) ('T95', 'Var', (217, 220)) ('paraganglioma', 'Disease', 'MESH:D010235', (197, 210)) ('T93', 'Var', (179, 182)) 104572 29067245 In recent years, aberrant DNA methylation of specific CpG sites has been detected in many types of malignant tumors, and the epigenetic regulation of promoter CpG sites is considered an important mechanism underlying carcinogenesis. ('aberrant', 'Var', (17, 25)) ('tumors', 'Disease', 'MESH:D009369', (109, 115)) ('malignant tumors', 'Disease', (99, 115)) ('detected', 'Reg', (73, 81)) ('DNA', 'MPA', (26, 29)) ('tumors', 'Phenotype', 'HP:0002664', (109, 115)) ('carcinogenesis', 'Disease', 'MESH:D063646', (217, 231)) ('malignant tumors', 'Disease', 'MESH:D018198', (99, 115)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('carcinogenesis', 'Disease', (217, 231)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('tumors', 'Disease', (109, 115)) ('tumor', 'Disease', (109, 114)) 104579 29067245 In recent years, DNA methylation of specific CpG islands (CpGi) has been detected in many types of malignant tumors, and the epigenetic regulation of promoter CpGis of tumor-related genes is considered an important mechanism for cancerous change. ('epigenetic regulation', 'Var', (125, 146)) ('cancer', 'Disease', (229, 235)) ('cancer', 'Disease', 'MESH:D009369', (229, 235)) ('cancerous change', 'Disease', (229, 245)) ('detected', 'Reg', (73, 81)) ('cancerous change', 'Disease', 'MESH:D009369', (229, 245)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('cancerous change', 'Phenotype', 'HP:0002664', (229, 245)) ('cancer', 'Phenotype', 'HP:0002664', (229, 235)) ('tumors', 'Phenotype', 'HP:0002664', (109, 115)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) 104580 29067245 In this study, we hypothesized that PCC/PGL tumors, which are benign tumors originally, undergo metastasis progressively through epigenetic events. ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('metastasis', 'CPA', (96, 106)) ('PGL tumor', 'Disease', 'MESH:D010235', (40, 49)) ('benign tumor', 'Disease', 'MESH:D009369', (62, 74)) ('PGL', 'Phenotype', 'HP:0002668', (40, 43)) ('benign tumors', 'Disease', (62, 75)) ('PGL tumors', 'Disease', 'MESH:D010235', (40, 50)) ('epigenetic events', 'Var', (129, 146)) ('tumors', 'Phenotype', 'HP:0002664', (44, 50)) ('PCC', 'Phenotype', 'HP:0002666', (36, 39)) ('tumors', 'Phenotype', 'HP:0002664', (69, 75)) ('PGL tumors', 'Disease', (40, 50)) ('tumor', 'Phenotype', 'HP:0002664', (44, 49)) ('benign tumors', 'Disease', 'MESH:D009369', (62, 75)) 104597 29067245 Cg02119938 and cg26870725 were associated with the ACSBG1 gene and MAST1 gene, respectively. ('ACSBG1 gene', 'Gene', (51, 62)) ('Cg02119938', 'Var', (0, 10)) ('associated', 'Reg', (31, 41)) ('Cg02119938', 'Chemical', '-', (0, 10)) ('cg26870725', 'Var', (15, 25)) ('MAST1', 'Gene', (67, 72)) 104599 29067245 Recently, it was reported that the hypomethylation of specific promoters in colon cancer cells might activate the aberrant expression of oncogenes and induce the loss of imprinting in vitro . ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('colon cancer', 'Disease', 'MESH:D015179', (76, 88)) ('colon cancer', 'Disease', (76, 88)) ('induce', 'Reg', (151, 157)) ('imprinting', 'MPA', (170, 180)) ('hypomethylation', 'Var', (35, 50)) ('activate', 'PosReg', (101, 109)) ('loss', 'MPA', (162, 166)) ('oncogenes', 'Protein', (137, 146)) ('aberrant expression', 'MPA', (114, 133)) ('colon cancer', 'Phenotype', 'HP:0003003', (76, 88)) 104600 29067245 reported 191 genes that characterized in significant hypermethylation in their promoter CpG island and were downregulated in succinate dehydrogenase (SDH) B-mutated PCC/PGLs. ('SDH', 'Gene', (150, 153)) ('PGL', 'Phenotype', 'HP:0002668', (169, 172)) ('succinate dehydrogenase', 'Gene', '6390', (125, 148)) ('succinate dehydrogenase', 'Gene', (125, 148)) ('SDH', 'Gene', '6390', (150, 153)) ('hypermethylation', 'Var', (53, 69)) ('downregulated', 'NegReg', (108, 121)) ('PCC', 'Phenotype', 'HP:0002666', (165, 168)) ('B-mutated', 'Var', (155, 164)) 104601 29067245 The majority of the 191 genes were hypermethylated in the metastatic lesion compared to the primary tumor of case 4 carrying a SDHB mutation. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('SDHB', 'Gene', '6390', (127, 131)) ('SDHB', 'Gene', (127, 131)) ('hypermethylated', 'Var', (35, 50)) ('mutation', 'Var', (132, 140)) 104604 29067245 reported hypermethylation of SDHC promoter in a PGLs patient without germline mutation of the gene, and they proposed the possibility that not germline mutations but gene inactivation by epigenetic change in promoter of SDHC may cause PGL tumor development in some instances. ('PGL', 'Phenotype', 'HP:0002668', (235, 238)) ('hypermethylation', 'MPA', (9, 25)) ('SDHC', 'Gene', (220, 224)) ('tumor', 'Phenotype', 'HP:0002664', (239, 244)) ('SDHC', 'Gene', '6391', (220, 224)) ('PGL', 'Phenotype', 'HP:0002668', (48, 51)) ('SDHC', 'Gene', (29, 33)) ('PGL tumor', 'Disease', (235, 244)) ('epigenetic change', 'Var', (187, 204)) ('cause', 'Reg', (229, 234)) ('SDHC', 'Gene', '6391', (29, 33)) ('inactivation', 'NegReg', (171, 183)) 104608 29067245 Gene alterations of MAST have been reported to result in several different mitotic abnormalities. ('Gene alterations', 'Var', (0, 16)) ('mitotic abnormalities', 'Disease', 'MESH:C536987', (75, 96)) ('result in', 'Reg', (47, 56)) ('MAST', 'Gene', (20, 24)) ('mitotic abnormalities', 'Disease', (75, 96)) 104708 26918215 Abdominal computer tomography (CT) scan and magnetic resonance imaging (MRI) are the standard imaging tests, but 131I-MIBG is particularly useful in confirming the functionality of the tumor and also in locating metastatic disease or extra-adrenal primary tumors (paragangliomas). ('tumor', 'Disease', (185, 190)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (113, 122)) ('locating', 'NegReg', (203, 211)) ('paragangliomas', 'Disease', (264, 278)) ('paragangliomas', 'Disease', 'MESH:D010235', (264, 278)) ('extra-adrenal primary tumors', 'Disease', (234, 262)) ('131I-MIBG', 'Var', (113, 122)) ('tumor', 'Disease', 'MESH:D009369', (256, 261)) ('extra-adrenal primary tumors', 'Disease', 'MESH:D010236', (234, 262)) ('metastatic disease', 'Disease', (212, 230)) ('tumor', 'Disease', 'MESH:D009369', (185, 190)) ('paragangliomas', 'Phenotype', 'HP:0002668', (264, 278)) ('tumor', 'Phenotype', 'HP:0002664', (256, 261)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('tumors', 'Phenotype', 'HP:0002664', (256, 262)) ('tumor', 'Disease', (256, 261)) 104710 26918215 Other treatment options are radiotherapy for bone injury, 131I-MIBG for unresectable malignant pheochromocytomas, or chemotherapy with cyclophosphamide for metastatic disease. ('malignant pheochromocytomas', 'Disease', 'MESH:D010673', (85, 112)) ('131I-MIBG', 'Chemical', 'MESH:D019797', (58, 67)) ('bone injury', 'Disease', 'MESH:D001848', (45, 56)) ('bone injury', 'Disease', (45, 56)) ('cyclophosphamide', 'Chemical', 'MESH:D003520', (135, 151)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (95, 111)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (95, 112)) ('131I-MIBG', 'Var', (58, 67)) ('malignant pheochromocytomas', 'Disease', (85, 112)) 104751 25872134 First described in 1966 by Dr. Henry Lynch with the description of two large Midwest kindred, HNPCC is due to germline mutations in MLH1, MSH2, MSH6 and PMS2, which result in a deficiency in DNA mismatch repair. ('HNPCC', 'Gene', '4436', (94, 99)) ('HNPCC', 'Phenotype', 'HP:0006716', (94, 99)) ('deficiency', 'NegReg', (177, 187)) ('MSH6', 'Gene', '2956', (144, 148)) ('MSH6', 'Gene', (144, 148)) ('DNA mismatch repair', 'MPA', (191, 210)) ('MSH2', 'Gene', (138, 142)) ('HNPCC', 'Gene', (94, 99)) ('MSH2', 'Gene', '4436', (138, 142)) ('PMS2', 'Gene', (153, 157)) ('MLH1', 'Gene', '4292', (132, 136)) ('MLH1', 'Gene', (132, 136)) ('mutations', 'Var', (119, 128)) ('PMS2', 'Gene', '5395', (153, 157)) 104758 25872134 Sebaceous adenomas are strongly associated with Muir-Torre, a variant of HNPCC. ('HNPCC', 'Gene', '4436', (73, 78)) ('HNPCC', 'Phenotype', 'HP:0006716', (73, 78)) ('Muir-Torre', 'Var', (48, 58)) ('associated', 'Reg', (32, 42)) ('adenomas', 'Disease', 'MESH:D000236', (10, 18)) ('HNPCC', 'Gene', (73, 78)) ('Sebaceous adenomas', 'Phenotype', 'HP:0009720', (0, 18)) ('adenomas', 'Disease', (10, 18)) 104759 25872134 Genetic testing was performed showing a pathogenic mutation of p.Q462X in MSH2 (c. 1384 C>T). ('MSH2', 'Gene', '4436', (74, 78)) ('p.Q462X', 'Mutation', 'rs876657701', (63, 70)) ('p.Q462X', 'Var', (63, 70)) ('1384 C>T', 'SUBSTITUTION', 'None', (83, 91)) ('pathogenic', 'Reg', (40, 50)) ('MSH2', 'Gene', (74, 78)) ('1384 C>T', 'Var', (83, 91)) 104764 25872134 Additionally, the patient had genetic testing with the Ambry Genetics PGLNext panel (genes in which inherited mutations are associated with an increased risk of pheochromocytoma), screening for both mutations and large genomic rearrangements of MAX, NF1, RET, SDHA, SDHAF2, SDHB, SDHC, SDHD, TMEM127 and VHL, which was negative. ('patient', 'Species', '9606', (18, 25)) ('mutations', 'Var', (199, 208)) ('TMEM127', 'Gene', (292, 299)) ('SDHD', 'Gene', '6392', (286, 290)) ('SDHB', 'Gene', '6390', (274, 278)) ('RET', 'Gene', (255, 258)) ('NF1', 'Gene', '4763', (250, 253)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (161, 177)) ('SDHC', 'Gene', (280, 284)) ('TMEM127', 'Gene', '55654', (292, 299)) ('SDHD', 'Gene', (286, 290)) ('VHL', 'Gene', (304, 307)) ('NF1', 'Gene', (250, 253)) ('SDHB', 'Gene', (274, 278)) ('pheochromocytoma', 'Disease', (161, 177)) ('MAX', 'Gene', (245, 248)) ('SDHA', 'Gene', (266, 270)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (161, 177)) ('SDHA', 'Gene', (260, 264)) ('SDHA', 'Gene', '6389', (266, 270)) ('VHL', 'Gene', '7428', (304, 307)) ('SDHAF2', 'Gene', '54949', (266, 272)) ('SDHA', 'Gene', '6389', (260, 264)) ('SDHAF2', 'Gene', (266, 272)) ('RET', 'Gene', '5979', (255, 258)) ('SDHC', 'Gene', '6391', (280, 284)) 104766 25872134 The patient presented had a mutation in the DNA mismatch repair protein, MSH2. ('MSH2', 'Gene', (73, 77)) ('mutation', 'Var', (28, 36)) ('MSH2', 'Gene', '4436', (73, 77)) ('patient', 'Species', '9606', (4, 11)) 104767 25872134 MSH2 mutation is well established to play a role in human carcinogenesis by allowing for DNA repair defects and is seen in 40% of patients with HNPCC. ('allowing', 'Reg', (76, 84)) ('HNPCC', 'Gene', (144, 149)) ('MSH2', 'Gene', (0, 4)) ('DNA repair defects', 'MPA', (89, 107)) ('human', 'Species', '9606', (52, 57)) ('patients', 'Species', '9606', (130, 138)) ('MSH2', 'Gene', '4436', (0, 4)) ('HNPCC', 'Gene', '4436', (144, 149)) ('HNPCC', 'Phenotype', 'HP:0006716', (144, 149)) ('mutation', 'Var', (5, 13)) 104768 25872134 While the MSH2 mutation has been shown to markedly increase the risk of colon cancer and the associated other HNPCC malignancies, no abnormalities in MSH2 protein levels have been demonstrated in PNET or small bowel carcinoids. ('increase', 'PosReg', (51, 59)) ('mutation', 'Var', (15, 23)) ('bowel carcinoids', 'Phenotype', 'HP:0006723', (210, 226)) ('cancer', 'Phenotype', 'HP:0002664', (78, 84)) ('colon cancer', 'Disease', (72, 84)) ('small bowel carcinoids', 'Phenotype', 'HP:0006722', (204, 226)) ('HNPCC', 'Phenotype', 'HP:0006716', (110, 115)) ('MSH2', 'Gene', (150, 154)) ('MSH2', 'Gene', '4436', (150, 154)) ('carcinoids', 'Phenotype', 'HP:0100570', (216, 226)) ('MSH2', 'Gene', (10, 14)) ('colon cancer', 'Phenotype', 'HP:0003003', (72, 84)) ('MSH2', 'Gene', '4436', (10, 14)) ('HNPCC malignancies', 'Disease', 'MESH:D009369', (110, 128)) ('small bowel carcinoids', 'Disease', (204, 226)) ('small bowel carcinoids', 'Disease', 'MESH:D002276', (204, 226)) ('HNPCC malignancies', 'Disease', (110, 128)) ('colon cancer', 'Disease', 'MESH:D015179', (72, 84)) 104772 25872134 This patient has an established germline MSH2 mutation and both her HNPCC associated lesion, the sebaceous adenoma, and the pheochromocytoma lacked staining for MSH2 and MSH6 indicating a high likelihood that this was not a sporadic NET but rather an extra-colonic manifestation of the HNPCC. ('HNPCC', 'Gene', '4436', (286, 291)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (124, 140)) ('MSH2', 'Gene', '4436', (161, 165)) ('MSH2', 'Gene', '4436', (41, 45)) ('adenoma', 'Disease', 'MESH:D000236', (107, 114)) ('pheochromocytoma', 'Disease', (124, 140)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (124, 140)) ('HNPCC', 'Gene', (68, 73)) ('MSH6', 'Gene', (170, 174)) ('HNPCC', 'Gene', '4436', (68, 73)) ('HNPCC', 'Phenotype', 'HP:0006716', (68, 73)) ('MSH6', 'Gene', '2956', (170, 174)) ('mutation', 'Var', (46, 54)) ('patient', 'Species', '9606', (5, 12)) ('sebaceous adenoma', 'Phenotype', 'HP:0009720', (97, 114)) ('MSH2', 'Gene', (161, 165)) ('HNPCC', 'Gene', (286, 291)) ('MSH2', 'Gene', (41, 45)) ('adenoma', 'Disease', (107, 114)) ('HNPCC', 'Phenotype', 'HP:0006716', (286, 291)) 104775 25872134 In addition, pheochromocytomas are traditionally associated with hypermethylation of MSH2 in both the sporadic and MEN2 types rather than with an absence of MSH2 as we describe here. ('pheochromocytomas', 'Disease', (13, 30)) ('MSH2', 'Gene', (85, 89)) ('hypermethylation', 'Var', (65, 81)) ('MSH2', 'Gene', (157, 161)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (13, 30)) ('MSH2', 'Gene', '4436', (85, 89)) ('associated', 'Reg', (49, 59)) ('MSH2', 'Gene', '4436', (157, 161)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (13, 29)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (13, 30)) 104776 25872134 While NETs traditionally develop in the absence of a mutation in the mismatch repair structure, the case reported above and those in the literature with demonstratable MSH2 mutations add evidence that NETs can be seen as an extracolonic manifestation of the Lynch Syndrome. ('NETs', 'Phenotype', 'HP:0100634', (201, 205)) ('Lynch Syndrome', 'Disease', (258, 272)) ('NETs', 'Disease', (6, 10)) ('mutations', 'Var', (173, 182)) ('MSH2', 'Gene', (168, 172)) ('NETs', 'Phenotype', 'HP:0100634', (6, 10)) ('MSH2', 'Gene', '4436', (168, 172)) ('NETs', 'Disease', (201, 205)) ('Lynch Syndrome', 'Disease', 'MESH:D003123', (258, 272)) 104833 25300370 Paraganglioma and pheochromocytoma upon maternal transmission of SDHD mutations The SDHD gene encodes a subunit of the mitochondrial tricarboxylic acid cycle enzyme and tumor suppressor, succinate dehydrogenase. ('mutations', 'Var', (70, 79)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (18, 34)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (18, 34)) ('Paraganglioma', 'Disease', (0, 13)) ('SDHD', 'Gene', '6392', (84, 88)) ('tumor', 'Disease', 'MESH:D009369', (169, 174)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (133, 151)) ('SDHD', 'Gene', (84, 88)) ('tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('Paraganglioma', 'Disease', 'MESH:D010235', (0, 13)) ('tumor', 'Disease', (169, 174)) ('succinate dehydrogenase', 'Gene', (187, 210)) ('succinate dehydrogenase', 'Gene', '6390', (187, 210)) ('pheochromocytoma', 'Disease', (18, 34)) ('SDHD', 'Gene', '6392', (65, 69)) ('SDHD', 'Gene', (65, 69)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (0, 13)) 104834 25300370 Mutations in this gene show a remarkable pattern of parent-of-origin related tumorigenesis, with almost all SDHD-related cases of head and neck paragangliomas and pheochromocytomas attributable to paternally-transmitted mutations. ('SDHD', 'Gene', '6392', (108, 112)) ('paragangliomas', 'Disease', (144, 158)) ('paragangliomas', 'Disease', 'MESH:D010235', (144, 158)) ('paragangliomas', 'Phenotype', 'HP:0002668', (144, 158)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (130, 158)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (163, 179)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (163, 180)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (139, 157)) ('paraganglioma', 'Phenotype', 'HP:0002668', (144, 157)) ('tumor', 'Disease', 'MESH:D009369', (77, 82)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (130, 157)) ('Mutations', 'Var', (0, 9)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (163, 180)) ('tumor', 'Phenotype', 'HP:0002664', (77, 82)) ('pheochromocytomas', 'Disease', (163, 180)) ('tumor', 'Disease', (77, 82)) ('SDHD', 'Gene', (108, 112)) ('neck paraganglioma', 'Disease', (139, 157)) 104835 25300370 Here we explore the underlying molecular basis of three cases of paraganglioma or pheochromocytoma that came to our attention due to apparent maternal transmission of an SDHD mutation. ('SDHD', 'Gene', (170, 174)) ('mutation', 'Var', (175, 183)) ('paraganglioma', 'Phenotype', 'HP:0002668', (65, 78)) ('paraganglioma or pheochromocytoma', 'Disease', 'MESH:D010673', (65, 98)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (82, 98)) ('paraganglioma or pheochromocytoma', 'Disease', (65, 98)) ('SDHD', 'Gene', '6392', (170, 174)) 104838 25300370 The third case appears to be a phenocopy, a sporadic paraganglioma in an SDHD mutation carrier with no immunohistochemical or DNA evidence to support a causal link between the mutation and the tumor. ('mutation', 'Var', (78, 86)) ('paraganglioma', 'Disease', (53, 66)) ('SDHD', 'Gene', (73, 77)) ('tumor', 'Disease', 'MESH:D009369', (193, 198)) ('paraganglioma', 'Disease', 'MESH:D010235', (53, 66)) ('tumor', 'Phenotype', 'HP:0002664', (193, 198)) ('tumor', 'Disease', (193, 198)) ('SDHD', 'Gene', '6392', (73, 77)) ('paraganglioma', 'Phenotype', 'HP:0002668', (53, 66)) 104840 25300370 Transmission of SDHD mutations via the maternal line can, in rare cases, result in tumorigenesis. ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('tumor', 'Disease', (83, 88)) ('SDHD', 'Gene', '6392', (16, 20)) ('SDHD', 'Gene', (16, 20)) ('tumor', 'Disease', 'MESH:D009369', (83, 88)) ('result in', 'Reg', (73, 82)) ('mutations', 'Var', (21, 30)) 104841 25300370 Despite this finding, the overwhelming majority of carriers of maternally-transmitted mutations will remain tumor-free throughout life. ('mutations', 'Var', (86, 95)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('tumor', 'Disease', 'MESH:D009369', (108, 113)) ('tumor', 'Disease', (108, 113)) 104849 25300370 The last decade has seen the identification of mutations in five SDH-related genes that cause hereditary paraganglioma-pheochromocytoma syndrome, including SDHD (chromosome 11q23), SDHB (chromosome 1p36), SDHC (chromosome 1q23), SDHAF2 (chromosome 11q12.2), and SDHA (chromosome 5p15). ('SDH', 'Gene', '6390', (65, 68)) ('paraganglioma-pheochromocytoma syndrome', 'Disease', (105, 144)) ('SDHB', 'Gene', '6390', (181, 185)) ('SDH', 'Gene', '6390', (262, 265)) ('SDH', 'Gene', '6390', (229, 232)) ('mutations', 'Var', (47, 56)) ('SDHA', 'Gene', (262, 266)) ('SDH', 'Gene', '6390', (205, 208)) ('SDH', 'Gene', (65, 68)) ('SDHA', 'Gene', (229, 233)) ('SDHB', 'Gene', (181, 185)) ('SDHC', 'Gene', '6391', (205, 209)) ('SDHA', 'Gene', '6389', (262, 266)) ('SDH', 'Gene', '6390', (181, 184)) ('SDHD', 'Gene', '6392', (156, 160)) ('SDHA', 'Gene', '6389', (229, 233)) ('SDH', 'Gene', '6390', (156, 159)) ('SDH', 'Gene', (262, 265)) ('SDHAF2', 'Gene', (229, 235)) ('SDH', 'Gene', (205, 208)) ('SDHAF2', 'Gene', '54949', (229, 235)) ('paraganglioma', 'Phenotype', 'HP:0002668', (105, 118)) ('SDH', 'Gene', (229, 232)) ('SDHD', 'Gene', (156, 160)) ('SDH', 'Gene', (181, 184)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (119, 135)) ('SDHC', 'Gene', (205, 209)) ('paraganglioma-pheochromocytoma syndrome', 'Disease', 'MESH:D010673', (105, 144)) ('SDH', 'Gene', (156, 159)) ('cause', 'Reg', (88, 93)) 104852 25300370 This phenomenon is not seen in the case of SDHA, SDHB or SDHC gene mutations, which result in tumor development regardless of the parental origin of the mutation. ('SDHB', 'Gene', (49, 53)) ('tumor', 'Disease', 'MESH:D009369', (94, 99)) ('SDHC', 'Gene', '6391', (57, 61)) ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('result in', 'Reg', (84, 93)) ('tumor', 'Disease', (94, 99)) ('mutations', 'Var', (67, 76)) ('SDHA', 'Gene', '6389', (43, 47)) ('SDHB', 'Gene', '6390', (49, 53)) ('SDHA', 'Gene', (43, 47)) ('SDHC', 'Gene', (57, 61)) 104854 25300370 Previous cases of tumor development related to maternal transmission of an SDHD mutation include a 2008 report by Pigny et al., which was later challenged as a probable misdiagnosis, and more recent report by Yeap et al. ('tumor', 'Disease', (18, 23)) ('SDHD', 'Gene', '6392', (75, 79)) ('SDHD', 'Gene', (75, 79)) ('tumor', 'Disease', 'MESH:D009369', (18, 23)) ('mutation', 'Var', (80, 88)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 104857 25300370 The patients described in this study carried a confirmed pathogenic mutation in the SDHD gene, identified due to a clinical diagnosis or to a family relationship to known mutation carriers. ('SDHD', 'Gene', '6392', (84, 88)) ('mutation', 'Var', (68, 76)) ('SDHD', 'Gene', (84, 88)) ('pathogenic', 'Reg', (57, 67)) ('patients', 'Species', '9606', (4, 12)) 104871 25300370 A recent and important development in the diagnosis of SDH-related paraganglioma has been the application of SDHB immunohistochemistry, which can reliably identify and differentiate SDH-related tumors from tumors with other causes regardless of which of the SDH genes is actually affected by a mutation. ('SDHB', 'Gene', '6390', (109, 113)) ('tumors', 'Phenotype', 'HP:0002664', (206, 212)) ('SDH', 'Gene', (258, 261)) ('SDH', 'Gene', '6390', (182, 185)) ('tumor', 'Phenotype', 'HP:0002664', (206, 211)) ('SDH', 'Gene', '6390', (55, 58)) ('paraganglioma', 'Disease', (67, 80)) ('SDHB', 'Gene', (109, 113)) ('tumors', 'Disease', (206, 212)) ('paraganglioma', 'Disease', 'MESH:D010235', (67, 80)) ('SDH', 'Gene', '6390', (109, 112)) ('tumors', 'Phenotype', 'HP:0002664', (194, 200)) ('mutation', 'Var', (294, 302)) ('SDH', 'Gene', (182, 185)) ('tumor', 'Phenotype', 'HP:0002664', (194, 199)) ('tumors', 'Disease', 'MESH:D009369', (206, 212)) ('SDH', 'Gene', (55, 58)) ('tumors', 'Disease', (194, 200)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) ('SDH', 'Gene', '6390', (258, 261)) ('SDH', 'Gene', (109, 112)) ('tumors', 'Disease', 'MESH:D009369', (194, 200)) 104878 25300370 Although distant maternal relatives of this patient have a history of paragangliomas and carry a known pathogenic SDHD gene mutation, no immediate maternal relative is affected, probably due to the inheritance of the mutation via the maternal line for several generations. ('pathogenic', 'Reg', (103, 113)) ('patient', 'Species', '9606', (44, 51)) ('SDHD', 'Gene', (114, 118)) ('SDHD', 'Gene', '6392', (114, 118)) ('paragangliomas', 'Disease', 'MESH:D010235', (70, 84)) ('paragangliomas', 'Disease', (70, 84)) ('paraganglioma', 'Phenotype', 'HP:0002668', (70, 83)) ('paragangliomas', 'Phenotype', 'HP:0002668', (70, 84)) ('mutation', 'Var', (124, 132)) 104880 25300370 Due to the maternal inheritance of the mutation, the patient was not immediately suspect for a SDHD-related paraganglioma. ('mutation', 'Var', (39, 47)) ('paraganglioma', 'Disease', 'MESH:D010235', (108, 121)) ('SDHD', 'Gene', '6392', (95, 99)) ('SDHD', 'Gene', (95, 99)) ('paraganglioma', 'Phenotype', 'HP:0002668', (108, 121)) ('paraganglioma', 'Disease', (108, 121)) ('patient', 'Species', '9606', (53, 60)) 104882 25300370 When all proved to be negative, analysis of the SDHD gene was undertaken and a heterozygous mutation identified in exon 3, the well-known Dutch founder mutation, c.274G>T, p.Asp92Tyr, also present in other family members. ('p.Asp92Tyr', 'Mutation', 'rs80338845', (172, 182)) ('p.Asp92Tyr', 'Var', (172, 182)) ('c.274G>T', 'Mutation', 'rs80338845', (162, 170)) ('SDHD', 'Gene', '6392', (48, 52)) ('SDHD', 'Gene', (48, 52)) ('c.274G>T', 'Var', (162, 170)) 104883 25300370 The patient, his mother and his maternal grandmother all carried the mutation (Figure 1a). ('mutation', 'Var', (69, 77)) ('carried', 'Reg', (57, 64)) ('patient', 'Species', '9606', (4, 11)) 104885 25300370 The paternal chromosome, also represented in the paternal grandmother and paternal aunt, was not associated with a mutation of SDHD, indicating that the patient inherited the mutation via the maternal line. ('SDHD', 'Gene', (127, 131)) ('SDHD', 'Gene', '6392', (127, 131)) ('mutation', 'Var', (115, 123)) ('patient', 'Species', '9606', (153, 160)) 104898 25300370 Although the patient had several first and second-degree relatives with paraganglioma, and a known pathogenic mutation of SDHD (p.Asp92Tyr) in the maternal family, there was no known history of mutations or paraganglioma on the father's side (Figure 3b). ('paraganglioma', 'Disease', 'MESH:D010235', (72, 85)) ('paraganglioma', 'Disease', 'MESH:D010235', (207, 220)) ('patient', 'Species', '9606', (13, 20)) ('p.Asp92Tyr', 'Mutation', 'rs80338845', (128, 138)) ('paraganglioma', 'Phenotype', 'HP:0002668', (72, 85)) ('SDHD', 'Gene', (122, 126)) ('p.Asp92Tyr', 'Var', (128, 138)) ('SDHD', 'Gene', '6392', (122, 126)) ('paraganglioma', 'Phenotype', 'HP:0002668', (207, 220)) ('paraganglioma', 'Disease', (72, 85)) ('paraganglioma', 'Disease', (207, 220)) 104899 25300370 As the patient's two younger siblings also carried the mutation, both underwent ENT and endocrinological investigations but no tumors or signs of catecholamine excess were found. ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('tumors', 'Disease', (127, 133)) ('patient', 'Species', '9606', (7, 14)) ('tumors', 'Phenotype', 'HP:0002664', (127, 133)) ('tumors', 'Disease', 'MESH:D009369', (127, 133)) ('catecholamine', 'Chemical', 'MESH:D002395', (146, 159)) ('mutation', 'Var', (55, 63)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (146, 166)) 104900 25300370 The analysis of genomic DNA from the patient and six other family members using microsatellite markers confirmed inheritance of a maternal chromosome containing a minimal haplotype defined by the D11S1793 (allele 133) and D11SS4090 (allele 183) alleles, present in all mutation carriers in the family (Figure 3c, yellow boxes). ('D11SS4090', 'Var', (222, 231)) ('D11S1793', 'Var', (196, 204)) ('patient', 'Species', '9606', (37, 44)) 104902 25300370 As both the patient and his two siblings share a paternal haplotype including the SDHD locus, a theoretical possibility exists that all three offspring inherited the mutation from the father. ('patient', 'Species', '9606', (12, 19)) ('SDHD', 'Gene', '6392', (82, 86)) ('mutation', 'Var', (166, 174)) ('SDHD', 'Gene', (82, 86)) 104912 25300370 However, speaking conservatively, we cannot definitively conclude that the patient's p.Asp92Tyr mutation, a mutation proven by its dominant role in paraganglioma patients in the Netherlands and worldwide to be profoundly pathogenic, is the cause of the adrenal hyperplasia in this case. ('adrenal hyperplasia', 'Disease', 'MESH:D000312', (253, 272)) ('patients', 'Species', '9606', (162, 170)) ('p.Asp92Tyr', 'Var', (85, 95)) ('adrenal hyperplasia', 'Phenotype', 'HP:0008221', (253, 272)) ('paraganglioma', 'Disease', 'MESH:D010235', (148, 161)) ('cause', 'Reg', (240, 245)) ('adrenal hyperplasia', 'Disease', (253, 272)) ('paraganglioma', 'Phenotype', 'HP:0002668', (148, 161)) ('patient', 'Species', '9606', (162, 169)) ('paraganglioma', 'Disease', (148, 161)) ('p.Asp92Tyr', 'Mutation', 'rs80338845', (85, 95)) ('patient', 'Species', '9606', (75, 82)) 104921 25300370 This analysis failed to identify a mutation, but subsequent analysis of the SDHD gene resulted in the identification of a heterozygous mutation, c.284 T>C, p.Leu95Pro. ('SDHD', 'Gene', (76, 80)) ('SDHD', 'Gene', '6392', (76, 80)) ('p.Leu95Pro', 'Var', (156, 166)) ('c.284 T>C', 'Var', (145, 154)) ('c.284 T>C', 'Mutation', 'rs80338846', (145, 154)) ('p.Leu95Pro', 'Mutation', 'rs80338846', (156, 166)) 104922 25300370 Further testing in the family identified the mutation in the proband's mother, one sister, two cousins (daughters of the patient's maternal aunt with confirmed paraganglioma) and one of the cousin's sons. ('paraganglioma', 'Disease', (160, 173)) ('paraganglioma', 'Disease', 'MESH:D010235', (160, 173)) ('mutation', 'Var', (45, 53)) ('patient', 'Species', '9606', (121, 128)) ('paraganglioma', 'Phenotype', 'HP:0002668', (160, 173)) 104928 25300370 The normal expression of the SDHB protein and lack of evidence of genetic loss suggest that the p.Leu95Pro mutation, despite being a well-established pathogenic mutation, is not causative in this patient's tumor. ('SDHB', 'Gene', '6390', (29, 33)) ('tumor', 'Phenotype', 'HP:0002664', (206, 211)) ('expression', 'MPA', (11, 21)) ('tumor', 'Disease', (206, 211)) ('SDHB', 'Gene', (29, 33)) ('patient', 'Species', '9606', (196, 203)) ('p.Leu95Pro', 'Mutation', 'rs80338846', (96, 106)) ('genetic loss', 'Disease', 'MESH:D030342', (66, 78)) ('genetic loss', 'Disease', (66, 78)) ('p.Leu95Pro', 'Var', (96, 106)) ('tumor', 'Disease', 'MESH:D009369', (206, 211)) 104933 25300370 As patients with SDHD-related paraganglioma carry paternally-inherited mutations, a maternal imprint would result in a profound deficiency of succinate dehydrogenase activity, a situation known to cause major developmental defects even when residual enzyme activity is present. ('developmental defects', 'Disease', (209, 230)) ('developmental defects', 'Disease', 'MESH:D003147', (209, 230)) ('paraganglioma', 'Phenotype', 'HP:0002668', (30, 43)) ('activity', 'MPA', (166, 174)) ('paraganglioma', 'Disease', (30, 43)) ('deficiency', 'Disease', (128, 138)) ('SDHD', 'Gene', '6392', (17, 21)) ('succinate dehydrogenase', 'Gene', '6390', (142, 165)) ('mutations', 'Var', (71, 80)) ('SDHD', 'Gene', (17, 21)) ('deficiency', 'Disease', 'MESH:D007153', (128, 138)) ('succinate dehydrogenase', 'Gene', (142, 165)) ('paraganglioma', 'Disease', 'MESH:D010235', (30, 43)) ('patients', 'Species', '9606', (3, 11)) ('deficiency of succinate', 'Phenotype', 'HP:0020149', (128, 151)) 104939 25300370 Functional loss of the maternal copy of chromosome 11 is a hallmark of SDHD-linked paragangliomas and has led to the proposal that tumorigenesis occurs only when a paternally-transmitted mutation of SDHD and loss of the remaining non-imprinted maternal allele is accompanied by loss of a maternally-expressed imprinted modifier gene. ('tumor', 'Disease', 'MESH:D009369', (131, 136)) ('loss', 'NegReg', (278, 282)) ('loss', 'NegReg', (11, 15)) ('SDHD-linked paragangliomas', 'Disease', (71, 97)) ('SDHD', 'Gene', '6392', (71, 75)) ('SDHD-linked paragangliomas', 'Disease', 'MESH:D010235', (71, 97)) ('paragangliomas', 'Phenotype', 'HP:0002668', (83, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('SDHD', 'Gene', (71, 75)) ('loss', 'NegReg', (208, 212)) ('tumor', 'Disease', (131, 136)) ('SDHD', 'Gene', '6392', (199, 203)) ('mutation', 'Var', (187, 195)) ('SDHD', 'Gene', (199, 203)) 104942 25300370 Other studies have suggested that loss of the maternal copy of chromosome 11 may also be a factor in both sporadic pheochromocytomas and those related to mutations of the Von Hippel-Lindau (VHL) gene, located on chromosome 3. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (115, 132)) ('Von Hippel-Lindau', 'Gene', '7428', (171, 188)) ('VHL', 'Gene', (190, 193)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (115, 131)) ('Von Hippel-Lindau', 'Gene', (171, 188)) ('VHL', 'Gene', '7428', (190, 193)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (115, 132)) ('related', 'Reg', (143, 150)) ('pheochromocytomas', 'Disease', (115, 132)) ('mutations', 'Var', (154, 163)) 104953 25300370 Carriers of maternally-inherited SDHD mutations can still be assured that their lifetime risk is not significantly different to non-mutation carriers. ('mutations', 'Var', (38, 47)) ('SDHD', 'Gene', (33, 37)) ('SDHD', 'Gene', '6392', (33, 37)) 104954 19508681 New Imaging Approaches to Pheochromocytomas and Paragangliomas Formerly used concepts for pheochromocytomas and paragangliomas have been challenged by recent discoveries that a) at least 24% of tumors are familial and thereby often multiple in various locations throughout the body, b) tumors are often malignant and perhaps more aggressive if associated with SDHB gene mutations, c) clinically silent tumors may present only with dopamine hypersecretion, d) tumors are more often found as incidentalomas in the current era where CT and MRI are more commonly used and e) MRI may be less specific for pheochromocytoma and paraganglioma than previously thought. ('tumor', 'Phenotype', 'HP:0002664', (286, 291)) ('tumors', 'Disease', (286, 292)) ('tumor', 'Phenotype', 'HP:0002664', (459, 464)) ('dopamine', 'Chemical', 'MESH:D004298', (431, 439)) ('tumors', 'Phenotype', 'HP:0002664', (459, 465)) ('Paragangliomas', 'Phenotype', 'HP:0002668', (48, 62)) ('tumors', 'Phenotype', 'HP:0002664', (402, 408)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (90, 107)) ('Pheochromocytomas and Paragangliomas', 'Disease', 'MESH:D010673', (26, 62)) ('tumors', 'Disease', 'MESH:D009369', (286, 292)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (26, 42)) ('tumors', 'Phenotype', 'HP:0002664', (194, 200)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (90, 126)) ('tumors', 'Disease', (459, 465)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (90, 106)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (600, 616)) ('tumor', 'Phenotype', 'HP:0002664', (402, 407)) ('incidentalomas', 'Disease', 'MESH:C538238', (490, 504)) ('tumors', 'Disease', (402, 408)) ('tumor', 'Phenotype', 'HP:0002664', (194, 199)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (26, 43)) ('SDHB', 'Gene', '6390', (360, 364)) ('incidentalomas', 'Disease', (490, 504)) ('tumors', 'Disease', (194, 200)) ('mutations', 'Var', (370, 379)) ('tumors', 'Disease', 'MESH:D009369', (459, 465)) ('paraganglioma', 'Phenotype', 'HP:0002668', (621, 634)) ('tumors', 'Disease', 'MESH:D009369', (402, 408)) ('tumors', 'Phenotype', 'HP:0002664', (286, 292)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (600, 634)) ('SDHB', 'Gene', (360, 364)) ('paragangliomas', 'Phenotype', 'HP:0002668', (112, 126)) ('tumors', 'Disease', 'MESH:D009369', (194, 200)) ('paraganglioma', 'Phenotype', 'HP:0002668', (112, 125)) 104967 19508681 Adrenal tumors are usually benign, secrete both epinephrine and norepinephrine in at least 50% of cases, are often related to a specific gene mutation if located bilaterally, and are frequently found as incidentalomas. ('epinephrine', 'Chemical', 'MESH:D004837', (67, 78)) ('incidentalomas', 'Disease', 'MESH:C538238', (203, 217)) ('norepinephrine', 'Chemical', 'MESH:D009638', (64, 78)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('related', 'Reg', (115, 122)) ('Adrenal tumors', 'Disease', (0, 14)) ('tumors', 'Phenotype', 'HP:0002664', (8, 14)) ('mutation', 'Var', (142, 150)) ('epinephrine', 'Chemical', 'MESH:D004837', (48, 59)) ('Adrenal tumors', 'Disease', 'MESH:D000310', (0, 14)) ('incidentalomas', 'Disease', (203, 217)) ('secrete', 'MPA', (35, 42)) 104972 19508681 Interestingly, pheochromocytoma and paraganglioma that are metastatic are most often related to mutations in the SDHB gene, further emphasizing the need to consider genotype-phenotype associations. ('SDHB', 'Gene', '6390', (113, 117)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (15, 49)) ('related', 'Reg', (85, 92)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (15, 31)) ('SDHB', 'Gene', (113, 117)) ('paraganglioma', 'Phenotype', 'HP:0002668', (36, 49)) ('mutations', 'Var', (96, 105)) 104976 19508681 These characteristics favor the use of functional imaging modalities, including situations when proof that a tumor is an adrenal pheochromocytoma is needed, which is the case in: 1) norepinephrine secreting tumors (these tumors may also be located extra-adrenally), 2) search for metastatic disease (especially in those tumors over 5 cm in size), 3) familial pheochromocytoma, especially due to their multiplicity or perhaps higher metastatic potential if associated with a SDHB mutation. ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (121, 145)) ('tumor', 'Phenotype', 'HP:0002664', (221, 226)) ('tumors', 'Disease', 'MESH:D009369', (320, 326)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (121, 145)) ('tumor', 'Phenotype', 'HP:0002664', (207, 212)) ('tumors', 'Disease', (207, 213)) ('tumors', 'Phenotype', 'HP:0002664', (221, 227)) ('SDHB', 'Gene', '6390', (474, 478)) ('adrenal pheochromocytoma', 'Disease', (121, 145)) ('mutation', 'Var', (479, 487)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (350, 375)) ('tumor', 'Disease', (320, 325)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('tumors', 'Disease', 'MESH:D009369', (207, 213)) ('tumors', 'Disease', (221, 227)) ('SDHB', 'Gene', (474, 478)) ('tumor', 'Disease', 'MESH:D009369', (320, 325)) ('tumor', 'Disease', (221, 226)) ('tumors', 'Phenotype', 'HP:0002664', (320, 326)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (129, 145)) ('norepinephrine', 'Chemical', 'MESH:D009638', (182, 196)) ('tumors', 'Disease', 'MESH:D009369', (221, 227)) ('tumor', 'Disease', (207, 212)) ('familial pheochromocytoma', 'Disease', (350, 375)) ('tumor', 'Disease', 'MESH:D009369', (221, 226)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (359, 375)) ('tumor', 'Phenotype', 'HP:0002664', (320, 325)) ('tumor', 'Disease', 'MESH:D009369', (207, 212)) ('associated', 'Reg', (456, 466)) ('tumors', 'Disease', (320, 326)) ('tumors', 'Phenotype', 'HP:0002664', (207, 213)) ('tumor', 'Disease', (109, 114)) 104982 19508681 illustrated the superiority of scintigraphy with [123I]-MIBG over [131I]-MIBG in a paraganglioma patient. ('[131I]-MIBG', 'Chemical', '-', (66, 77)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('paraganglioma', 'Disease', (83, 96)) ('patient', 'Species', '9606', (97, 104)) ('paraganglioma', 'Disease', 'MESH:D010235', (83, 96)) ('[123I]-MIBG', 'Var', (49, 60)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (49, 60)) 104993 19508681 [11C]-hydroxyephedrine ([11C]-HED) is more polar than MIBG, has even greater similarities with norepinephrine and was the first positron-emitting probe of the sympathoadrenal system used in humans. ('HED', 'Disease', (30, 33)) ('humans', 'Species', '9606', (190, 196)) ('norepinephrine', 'Chemical', 'MESH:D009638', (95, 109)) ('MIBG', 'Chemical', 'MESH:D019797', (54, 58)) ('[11C]-hydroxyephedrine', 'Chemical', '-', (0, 22)) ('[11C]-hydroxyephedrine', 'Var', (0, 22)) ('HED', 'Disease', 'MESH:D053359', (30, 33)) ('similarities', 'MPA', (77, 89)) 104995 19508681 Newer positron-emitting compounds used in PET imaging, like [18F] (half-life 110 min), generate positrons that result in high resolution images. ('positrons', 'Var', (96, 105)) ('result in', 'Reg', (111, 120)) ('high resolution images', 'MPA', (121, 143)) ('18F', 'Chemical', 'MESH:C000615276', (61, 64)) 105004 19508681 At least part of this compound's ability to localize paragangliomas is the fact that [18F]-FDOPA is converted to [18F]-FDA which is subsequently stored in the intracellular vesicles (Figure 1). ('[18F]-FDOPA', 'Var', (85, 96)) ('paragangliomas', 'Disease', 'MESH:D010235', (53, 67)) ('paragangliomas', 'Disease', (53, 67)) ('paraganglioma', 'Phenotype', 'HP:0002668', (53, 66)) ('[18F]-FDA', 'Chemical', '-', (113, 122)) ('[18F]-FDOPA', 'Chemical', 'MESH:C043437', (85, 96)) ('paragangliomas', 'Phenotype', 'HP:0002668', (53, 67)) 105008 19508681 Although [18F]-FDG PET is less specific, studies have shown it can be a useful in patients with pheochromocytoma and paraganglioma, especially in malignant disease, as will be discussed below. ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (96, 130)) ('-FDG', 'Chemical', 'MESH:D019788', (14, 18)) ('patients', 'Species', '9606', (82, 90)) ('[18F]-FDG PET', 'Var', (9, 22)) ('paraganglioma', 'Phenotype', 'HP:0002668', (117, 130)) ('malignant disease', 'Disease', 'MESH:D009369', (146, 163)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (96, 112)) ('malignant disease', 'Disease', (146, 163)) ('18F', 'Chemical', 'MESH:C000615276', (10, 13)) 105012 19508681 the suspicion for familial tumors, especially the presence of succinate dehydrogenase (SDHx) gene mutations. ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('familial tumors', 'Disease', 'MESH:D009386', (18, 33)) ('familial tumors', 'Disease', (18, 33)) ('tumors', 'Phenotype', 'HP:0002664', (27, 33)) ('mutations', 'Var', (98, 107)) ('SDHx', 'Gene', (87, 91)) ('SDHx', 'Chemical', '-', (87, 91)) 105014 19508681 Below we will discuss the evidence of implementing a tailor-made functional imaging approach in these different subsets of patients with pheochromocytoma and paraganglioma according to location (I), metastatic disease (II) and the presence of SDHx gene mutations (III). ('paraganglioma', 'Phenotype', 'HP:0002668', (158, 171)) ('SDHx', 'Chemical', '-', (243, 247)) ('SDHx', 'Gene', (243, 247)) ('metastatic disease', 'Disease', (199, 217)) ('mutations', 'Var', (253, 262)) ('patients', 'Species', '9606', (123, 131)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (137, 171)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (137, 153)) 105021 19508681 Interestingly, patients with MEN2 are not only at risk for developing bilateral adrenal disease but may also have multiple tumors in one adrenal gland. ('patients', 'Species', '9606', (15, 23)) ('tumors', 'Disease', (123, 129)) ('tumors', 'Disease', 'MESH:D009369', (123, 129)) ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('MEN2', 'Var', (29, 33)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('MEN', 'Species', '9606', (29, 32)) ('adrenal disease', 'Phenotype', 'HP:0000834', (80, 95)) ('bilateral adrenal disease', 'Disease', (70, 95)) ('bilateral adrenal disease', 'Disease', 'MESH:D000310', (70, 95)) 105023 19508681 Familial paragangliomas, those related to SDHx gene mutations, have been associated with tumors in adrenal but more often extra-adrenal locations and may present with multifocal or metastasized disease. ('mutations', 'Var', (52, 61)) ('tumors', 'Disease', (89, 95)) ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('metastasized disease', 'Disease', 'MESH:D009362', (181, 201)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('tumors', 'Disease', 'MESH:D009369', (89, 95)) ('associated', 'Reg', (73, 83)) ('metastasized disease', 'Disease', (181, 201)) ('SDHx', 'Gene', (42, 46)) ('Familial paragangliomas', 'Disease', (0, 23)) ('SDHx', 'Chemical', '-', (42, 46)) ('paraganglioma', 'Phenotype', 'HP:0002668', (9, 22)) ('paragangliomas', 'Phenotype', 'HP:0002668', (9, 23)) ('Familial paragangliomas', 'Disease', 'MESH:D010235', (0, 23)) 105035 19508681 Although data concerning functional imaging in patients with specifically a MEN2 associated pheochromocytoma is scarce, [123I]-MIBG scintigraphy, [18F]-FDA PET and [18F]-DOPA PET are thought to perform well, with the advantages of the newer PET imaging characteristics as described above. ('[18F]-FDA', 'Chemical', '-', (146, 155)) ('pheochromocytoma', 'Disease', (92, 108)) ('patients', 'Species', '9606', (47, 55)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (92, 108)) ('[18F]-DOPA', 'Chemical', '-', (164, 174)) ('[18F]-FDA', 'Var', (146, 155)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (120, 131)) ('MEN', 'Species', '9606', (76, 79)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (92, 108)) ('[18F', 'Var', (164, 168)) 105036 19508681 In contrast, in patients with VHL-associated pheochromocytoma, [18F]-FDA PET significantly outperformed [123I]-MIBG scintigraphy, which could be related to the limited expression of NET in VHL paraganglioma cells. ('VHL', 'Disease', 'MESH:D006623', (30, 33)) ('[18F]-FDA', 'Chemical', '-', (63, 72)) ('VHL paraganglioma', 'Disease', 'MESH:D006623', (189, 206)) ('NET', 'Gene', '6530', (182, 185)) ('patients', 'Species', '9606', (16, 24)) ('VHL', 'Disease', (189, 192)) ('VHL', 'Disease', 'MESH:D006623', (189, 192)) ('NET', 'Gene', (182, 185)) ('[18F]-FDA', 'Var', (63, 72)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (45, 61)) ('VHL paraganglioma', 'Disease', (189, 206)) ('pheochromocytoma', 'Disease', (45, 61)) ('paraganglioma', 'Phenotype', 'HP:0002668', (193, 206)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (45, 61)) ('outperformed', 'PosReg', (91, 103)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (104, 115)) ('VHL', 'Disease', (30, 33)) 105037 19508681 The fact that [18F]-FDA has a much higher affinity for these receptors than MIBG is thought to be responsible. ('[18F]-FDA', 'Var', (14, 23)) ('MIBG', 'Chemical', 'MESH:D019797', (76, 80)) ('affinity', 'Interaction', (42, 50)) ('higher', 'PosReg', (35, 41)) ('[18F]-FDA', 'Chemical', '-', (14, 23)) 105038 19508681 In conclusion, patients with an adrenal lesion suspect for pheochromocytoma, need imaging with either [123I]-MIBG scintigraphy, [18F]-FDA PET or [18F]-DOPA PET to detect or exclude multifocal or metastatic disease. ('[18F]-DOPA', 'Chemical', '-', (145, 155)) ('patients', 'Species', '9606', (15, 23)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (102, 113)) ('[18F]-FDA', 'Chemical', '-', (128, 137)) ('pheochromocytoma', 'Disease', (59, 75)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (59, 75)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (59, 75)) ('[18F]', 'MPA', (145, 150)) ('[18F]-FDA', 'Var', (128, 137)) ('adrenal lesion suspect for pheochromocytoma', 'Phenotype', 'HP:0006748', (32, 75)) 105040 19508681 Adrenal tumors associated with a VHL gene mutation, are best imaged by [18F]-FDA PET, whereas studies specifically concerning adrenal paragangliomas associated with other genotypes (i.e. ('VHL', 'Disease', 'MESH:D006623', (33, 36)) ('paraganglioma', 'Phenotype', 'HP:0002668', (134, 147)) ('adrenal paragangliomas', 'Disease', (126, 148)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('adrenal paragangliomas', 'Disease', 'MESH:D010236', (126, 148)) ('associated', 'Reg', (15, 25)) ('paragangliomas', 'Phenotype', 'HP:0002668', (134, 148)) ('mutation', 'Var', (42, 50)) ('Adrenal tumors', 'Disease', (0, 14)) ('[18F]-FDA', 'Chemical', '-', (71, 80)) ('tumors', 'Phenotype', 'HP:0002664', (8, 14)) ('Adrenal tumors', 'Disease', 'MESH:D000310', (0, 14)) ('VHL', 'Disease', (33, 36)) 105043 19508681 Extra-adrenal locations of paragangliomas are frequently found in familial paraganglioma syndromes associated with the SDHx mutations. ('familial paraganglioma syndromes', 'Disease', (66, 98)) ('mutations', 'Var', (124, 133)) ('paraganglioma', 'Phenotype', 'HP:0002668', (75, 88)) ('paragangliomas', 'Disease', 'MESH:D010235', (27, 41)) ('SDHx', 'Chemical', '-', (119, 123)) ('SDHx', 'Gene', (119, 123)) ('paragangliomas', 'Disease', (27, 41)) ('paraganglioma', 'Phenotype', 'HP:0002668', (27, 40)) ('paragangliomas', 'Phenotype', 'HP:0002668', (27, 41)) ('familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (66, 98)) ('associated', 'Reg', (99, 109)) 105048 19508681 Overall, [18F]-FDA PET has a better performance in detecting extra-adrenal paragangliomas than [123I]-MIBG scintigraphy and should therefore be the preferred imaging modality, if available. ('[18F]-FDA PET', 'Var', (9, 22)) ('extra-adrenal paragangliomas', 'Disease', (61, 89)) ('paraganglioma', 'Phenotype', 'HP:0002668', (75, 88)) ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (95, 106)) ('[18F]-FDA', 'Chemical', '-', (9, 18)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (61, 89)) ('paragangliomas', 'Phenotype', 'HP:0002668', (75, 89)) 105051 19508681 However, these results may have reflected an overrepresentation of patients with SDHB mutations and their associated high prevalence of malignant disease, which will be further discussed below. ('mutations', 'Var', (86, 95)) ('malignant disease', 'Disease', 'MESH:D009369', (136, 153)) ('patients', 'Species', '9606', (67, 75)) ('malignant disease', 'Disease', (136, 153)) ('SDHB', 'Gene', '6390', (81, 85)) ('SDHB', 'Gene', (81, 85)) 105054 19508681 Interestingly, in patients with a documented SDHB mutation, the [18F]-FDOPA PET performed very poor (especially in those with metastasized SDHB associated paragangliomas) and should therefore not be advised. ('[18F]-FDOPA', 'Chemical', 'MESH:C043437', (64, 75)) ('SDHB', 'Gene', '6390', (139, 143)) ('SDHB', 'Gene', (139, 143)) ('poor', 'NegReg', (95, 99)) ('paragangliomas', 'Disease', (155, 169)) ('paragangliomas', 'Disease', 'MESH:D010235', (155, 169)) ('paragangliomas', 'Phenotype', 'HP:0002668', (155, 169)) ('[18F', 'Var', (64, 68)) ('SDHB', 'Gene', '6390', (45, 49)) ('paraganglioma', 'Phenotype', 'HP:0002668', (155, 168)) ('patients', 'Species', '9606', (18, 26)) ('SDHB', 'Gene', (45, 49)) ('mutation', 'Var', (50, 58)) 105056 19508681 Metastatic pheochromocytomas and paragangliomas are most commonly associated with mutations in the SDHB gene in an estimated 40% of cases if primary tumors are located in the abdomen. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (11, 27)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (11, 47)) ('associated', 'Reg', (66, 76)) ('tumor', 'Phenotype', 'HP:0002664', (149, 154)) ('SDHB', 'Gene', '6390', (99, 103)) ('mutations', 'Var', (82, 91)) ('SDHB', 'Gene', (99, 103)) ('tumors', 'Disease', (149, 155)) ('Metastatic pheochromocytomas', 'Disease', (0, 28)) ('tumors', 'Disease', 'MESH:D009369', (149, 155)) ('paragangliomas', 'Phenotype', 'HP:0002668', (33, 47)) ('Metastatic pheochromocytomas', 'Disease', 'MESH:D010673', (0, 28)) ('tumors', 'Phenotype', 'HP:0002664', (149, 155)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (11, 28)) ('paraganglioma', 'Phenotype', 'HP:0002668', (33, 46)) 105059 19508681 Metastatic paragangliomas imaged by [131/123I]-MIBG scintigraphy have often been found to be false negative or suboptimal. ('123I]-MIBG', 'Chemical', 'MESH:D019797', (41, 51)) ('Metastatic paragangliomas', 'Disease', 'MESH:D010235', (0, 25)) ('paragangliomas', 'Phenotype', 'HP:0002668', (11, 25)) ('paraganglioma', 'Phenotype', 'HP:0002668', (11, 24)) ('Metastatic paragangliomas', 'Disease', (0, 25)) ('[131/123I]-MIBG', 'Var', (36, 51)) 105066 19508681 Superiority of [18F]-FDA PET over [131/123I]-MIBG scintigraphy was shown in malignant tumors. ('tumor', 'Phenotype', 'HP:0002664', (86, 91)) ('malignant tumors', 'Disease', 'MESH:D018198', (76, 92)) ('[18F]-FDA', 'Chemical', '-', (15, 24)) ('tumors', 'Phenotype', 'HP:0002664', (86, 92)) ('123I]-MIBG', 'Chemical', 'MESH:D019797', (39, 49)) ('[18F]-FDA', 'Var', (15, 24)) ('malignant tumors', 'Disease', (76, 92)) 105067 19508681 The sensitivity of [18F]-FDOPA PET for metastatic paragangliomas is reported to be limited, but [18F]-FDOPA PET may perform especially poor in patients with SDHB-related metastatic disease. ('paragangliomas', 'Disease', 'MESH:D010235', (50, 64)) ('poor', 'NegReg', (135, 139)) ('[18F]-FDOPA', 'Chemical', 'MESH:C043437', (96, 107)) ('SDHB', 'Gene', '6390', (157, 161)) ('patients', 'Species', '9606', (143, 151)) ('[18F]-FDOPA', 'Var', (96, 107)) ('paraganglioma', 'Phenotype', 'HP:0002668', (50, 63)) ('SDHB', 'Gene', (157, 161)) ('paragangliomas', 'Phenotype', 'HP:0002668', (50, 64)) ('paragangliomas', 'Disease', (50, 64)) ('[18F]-FDOPA', 'Chemical', 'MESH:C043437', (19, 30)) 105070 19508681 In another study focusing on paraganglioma bone metastases specifically, bone scintigraphy proved useful in the staging of patients with malignant pheochromocytoma and paraganglioma, particularly in patients with SDHB mutations. ('paraganglioma bone metastases', 'Disease', 'MESH:D009362', (29, 58)) ('malignant pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (137, 181)) ('mutations', 'Var', (218, 227)) ('paraganglioma', 'Phenotype', 'HP:0002668', (168, 181)) ('patients', 'Species', '9606', (123, 131)) ('paraganglioma bone metastases', 'Disease', (29, 58)) ('patients', 'Species', '9606', (199, 207)) ('SDHB', 'Gene', '6390', (213, 217)) ('SDHB', 'Gene', (213, 217)) ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (147, 163)) 105071 19508681 As for other functional imaging, [18F]-FDG PET was highly recommended in SDHB mutation positive patients, whereas [18F]-FDA PET was recommended in patients without the mutation. ('mutation', 'Var', (78, 86)) ('-FDG', 'Chemical', 'MESH:D019788', (38, 42)) ('18F', 'Chemical', 'MESH:C000615276', (115, 118)) ('positive', 'Reg', (87, 95)) ('[18F]-FDA', 'Chemical', '-', (114, 123)) ('patients', 'Species', '9606', (147, 155)) ('patients', 'Species', '9606', (96, 104)) ('SDHB', 'Gene', '6390', (73, 77)) ('18F', 'Chemical', 'MESH:C000615276', (34, 37)) ('SDHB', 'Gene', (73, 77)) 105072 19508681 With increasing dedifferentiation of the tumor, the ideal functional imaging modality appears to shift from the more specific [18F]-FDA PET to the less specific [18F]-FDG PET, the so called "flip-flop" phenomenon. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('[18F]-FDA', 'Chemical', '-', (126, 135)) ('tumor', 'Disease', (41, 46)) ('18F', 'Chemical', 'MESH:C000615276', (162, 165)) ('[18F]-FDA', 'Var', (126, 135)) ('-FDG', 'Chemical', 'MESH:D019788', (166, 170)) ('18F', 'Chemical', 'MESH:C000615276', (127, 130)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) 105077 19508681 In metastatic tumors associated with a SDHB mutation, [18F]-FDG PET has shown its superiority. ('18F', 'Chemical', 'MESH:C000615276', (55, 58)) ('-FDG', 'Chemical', 'MESH:D019788', (59, 63)) ('mutation', 'Var', (44, 52)) ('SDHB', 'Gene', '6390', (39, 43)) ('tumors', 'Disease', (14, 20)) ('SDHB', 'Gene', (39, 43)) ('tumors', 'Phenotype', 'HP:0002664', (14, 20)) ('tumors', 'Disease', 'MESH:D009369', (14, 20)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) 105078 19508681 Nonetheless, because a large proportion of malignant pheochromocytomas and paragangliomas are associated with mutations in the SDHB gene per se, one might speculate that the excellent performance of [18F]-FDG PET in metastasized SDHB associated tumors, is a reflection of this genetic background itself. ('SDHB', 'Gene', '6390', (229, 233)) ('18F', 'Chemical', 'MESH:C000615276', (200, 203)) ('tumor', 'Phenotype', 'HP:0002664', (245, 250)) ('SDHB', 'Gene', (127, 131)) ('tumors', 'Phenotype', 'HP:0002664', (245, 251)) ('malignant pheochromocytoma', 'Disease', 'MESH:D010673', (43, 69)) ('SDHB', 'Gene', (229, 233)) ('associated', 'Reg', (94, 104)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (53, 69)) ('-FDG', 'Chemical', 'MESH:D019788', (204, 208)) ('tumors', 'Disease', (245, 251)) ('mutations', 'Var', (110, 119)) ('malignant pheochromocytoma', 'Disease', (43, 69)) ('tumors', 'Disease', 'MESH:D009369', (245, 251)) ('paragangliomas', 'Phenotype', 'HP:0002668', (75, 89)) ('paraganglioma', 'Phenotype', 'HP:0002668', (75, 88)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (53, 70)) ('SDHB', 'Gene', '6390', (127, 131)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (53, 89)) 105079 19508681 Familial paraganglioma syndromes are associated with SDH gene mutations. ('SDH', 'Gene', (53, 56)) ('Familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (0, 32)) ('SDH', 'Gene', '6390', (53, 56)) ('associated', 'Reg', (37, 47)) ('Familial paraganglioma syndromes', 'Disease', (0, 32)) ('paraganglioma', 'Phenotype', 'HP:0002668', (9, 22)) ('mutations', 'Var', (62, 71)) 105082 19508681 Mutations may lead to complete loss of SDH enzymatic activity in paragangliomas, with subsequent deregulation of hypoxia responsive genes. ('deregulation', 'MPA', (97, 109)) ('SDH', 'Gene', (39, 42)) ('hypoxia', 'Disease', 'MESH:D000860', (113, 120)) ('loss', 'NegReg', (31, 35)) ('paragangliomas', 'Disease', (65, 79)) ('hypoxia', 'Disease', (113, 120)) ('paragangliomas', 'Disease', 'MESH:D010235', (65, 79)) ('paragangliomas', 'Phenotype', 'HP:0002668', (65, 79)) ('paraganglioma', 'Phenotype', 'HP:0002668', (65, 78)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', '6390', (39, 42)) 105095 19508681 For example, in VHL carriers [18F]-FDA PET has been found to be superior compared to [123I]-MIBG scintigraphy. ('[123I]-MIBG', 'Chemical', 'MESH:D019797', (85, 96)) ('[18F]-FDA', 'Chemical', '-', (29, 38)) ('VHL', 'Disease', 'MESH:D006623', (16, 19)) ('VHL', 'Disease', (16, 19)) ('[18F]-FDA', 'Var', (29, 38)) 105096 19508681 In patients with SDHB mutations [18F]-FDG or [18F]-FDA PET should be imaging modalities of choice, and [18F]-FDA or [18F]-DOPA PET are methods of choice in patients where SDHB has been ruled out. ('patients', 'Species', '9606', (156, 164)) ('18F', 'Chemical', 'MESH:C000615276', (117, 120)) ('18F', 'Chemical', 'MESH:C000615276', (104, 107)) ('[18F]-FDA', 'Chemical', '-', (103, 112)) ('[18F]-FDA', 'Chemical', '-', (45, 54)) ('[18F]-DOPA', 'Chemical', '-', (116, 126)) ('18F', 'Chemical', 'MESH:C000615276', (46, 49)) ('18F', 'Chemical', 'MESH:C000615276', (33, 36)) ('SDHB', 'Gene', '6390', (17, 21)) ('SDHB', 'Gene', '6390', (171, 175)) ('[18F]-FDA', 'Var', (45, 54)) ('patients', 'Species', '9606', (3, 11)) ('mutations', 'Var', (22, 31)) ('SDHB', 'Gene', (17, 21)) ('SDHB', 'Gene', (171, 175)) ('-FDG', 'Chemical', 'MESH:D019788', (37, 41)) 105098 19508681 For the detection of bone metastases, [18F]-FDA PET is recommended in non-SDHB carriers, whereas in SDHB patients [18F]-FDG PET is the first choice. ('-FDG', 'Chemical', 'MESH:D019788', (119, 123)) ('[18F]-FDA', 'Chemical', '-', (38, 47)) ('patients', 'Species', '9606', (105, 113)) ('bone metastases', 'Disease', 'MESH:D009362', (21, 36)) ('SDHB', 'Gene', '6390', (74, 78)) ('18F', 'Chemical', 'MESH:C000615276', (115, 118)) ('bone metastases', 'Disease', (21, 36)) ('SDHB', 'Gene', (74, 78)) ('18F', 'Chemical', 'MESH:C000615276', (39, 42)) ('[18F]-FDA', 'Var', (38, 47)) ('SDHB', 'Gene', '6390', (100, 104)) ('SDHB', 'Gene', (100, 104)) 105100 19508681 Whether this is a reflection of dedifferentiation and metastatic disease, or is directly associated with mutations in the SDH genes, is subject to further studies. ('SDH', 'Gene', (122, 125)) ('mutations', 'Var', (105, 114)) ('SDH', 'Gene', '6390', (122, 125)) 105112 33397040 Patients with germline mutations had a higher likelihood of family history. ('family history', 'Disease', (60, 74)) ('Patients', 'Species', '9606', (0, 8)) ('germline mutations', 'Var', (14, 32)) 105127 33397040 Mutations in subunits of the succinate dehydrogenase (SDH) complex, a mitochondrial enzyme for oxidative phosphorylation, is now a well-known cause of hereditary PPGL. ('PPGL', 'Chemical', '-', (162, 166)) ('Mutations', 'Var', (0, 9)) ('succinate dehydrogenase', 'Gene', '6390', (29, 52)) ('cause', 'Reg', (142, 147)) ('PPGL', 'Disease', (162, 166)) ('SDH', 'Gene', '6390', (54, 57)) ('PGL', 'Phenotype', 'HP:0002668', (163, 166)) ('succinate dehydrogenase', 'Gene', (29, 52)) ('SDH', 'Gene', (54, 57)) 105141 33397040 In this study, seven patients (13.2%) had germline mutations: rearranged during transfection (RET; n=2), VHL (n=1), SDHB (n=2), and SDHD (n=2). ('SDHD', 'Gene', (132, 136)) ('VHL', 'Gene', (105, 108)) ('patients', 'Species', '9606', (21, 29)) ('SDHB', 'Gene', (116, 120)) ('rearranged', 'Var', (62, 72)) 105171 33397040 Even after adopting targeted NGS (post-NGS period), Sanger sequencing was the diagnosis of choice for patients who had syndromic features that strongly implied specific gene mutations and family members of patients with germline mutations. ('mutations', 'Var', (174, 183)) ('patients', 'Species', '9606', (102, 110)) ('patients', 'Species', '9606', (206, 214)) ('implied', 'Reg', (152, 159)) 105175 33397040 When a pathogenic or likely pathogenic mutation was found by targeted NGS or germline mutation of PPGL-related susceptibility gene was detected by Sanger sequencing, a patient was considered to have mutation of known pathogenicity. ('pathogenic', 'CPA', (28, 38)) ('PGL', 'Phenotype', 'HP:0002668', (99, 102)) ('PPGL', 'Chemical', '-', (98, 102)) ('patient', 'Species', '9606', (168, 175)) ('PPGL-related', 'Gene', (98, 110)) ('pathogenic', 'Reg', (7, 17)) ('NGS', 'Var', (70, 73)) 105176 33397040 If a patient had a mutation of known pathogenicity, the genetic analysis result counted as positive, which indicates PPGL with a germline mutation of a susceptibility gene. ('patient', 'Species', '9606', (5, 12)) ('mutation', 'Var', (19, 27)) ('PPGL', 'Disease', (117, 121)) ('PGL', 'Phenotype', 'HP:0002668', (118, 121)) ('PPGL', 'Chemical', '-', (117, 121)) 105180 33397040 For patients with germline mutations of PPGL-related genes, information on mutated genes and specific loci were collected. ('mutations', 'Var', (27, 36)) ('PPGL', 'Chemical', '-', (40, 44)) ('PGL', 'Phenotype', 'HP:0002668', (41, 44)) ('patients', 'Species', '9606', (4, 12)) ('PPGL-related genes', 'Gene', (40, 58)) 105185 33397040 Of the 78 patients with PPGLs, 61 patients (78.2%) were diagnosed with PCC, and the other 17 patients (21.8%) were diagnosed with PGL. ('PCC', 'Disease', (71, 74)) ('PGL', 'Phenotype', 'HP:0002668', (130, 133)) ('PPGLs', 'Var', (24, 29)) ('PGL', 'Phenotype', 'HP:0002668', (25, 28)) ('PCC', 'Phenotype', 'HP:0002666', (71, 74)) ('diagnosed', 'Reg', (56, 65)) ('PPGLs', 'Chemical', '-', (24, 29)) ('patients', 'Species', '9606', (34, 42)) ('patients', 'Species', '9606', (10, 18)) ('patients', 'Species', '9606', (93, 101)) 105199 33397040 Among patients of all periods, 28 patients had positive genetic analysis results, as they were found with germline mutations of PPGL-related genes with pathogenicity, detected either by targeted NGS (n=2 for pathogenic, n=10 for likely pathogenic) or Sanger sequencing (n=16). ('mutations', 'Var', (115, 124)) ('PGL', 'Phenotype', 'HP:0002668', (129, 132)) ('PPGL-related genes', 'Gene', (128, 146)) ('patients', 'Species', '9606', (6, 14)) ('patients', 'Species', '9606', (34, 42)) ('PPGL', 'Chemical', '-', (128, 132)) 105206 33397040 PPGL patients with germline mutations were more likely to have a family history (P=0.001). ('germline mutations', 'Var', (19, 37)) ('PGL', 'Phenotype', 'HP:0002668', (1, 4)) ('patients', 'Species', '9606', (5, 13)) ('PPGL', 'Gene', (0, 4)) ('PPGL', 'Chemical', '-', (0, 4)) ('family history', 'Disease', (65, 79)) 105207 33397040 Although not statistically significant, patients with germline mutations tended to have a lower age of onset and prevalence of bilateral PCCs and a higher rate of metastasis and recurrence. ('PCCs', 'Chemical', '-', (137, 141)) ('metastasis', 'CPA', (163, 173)) ('patients', 'Species', '9606', (40, 48)) ('germline mutations', 'Var', (54, 72)) ('bilateral PCCs', 'Disease', (127, 141)) ('lower', 'NegReg', (90, 95)) ('PCC', 'Phenotype', 'HP:0002666', (137, 140)) ('rat', 'Species', '10116', (155, 158)) ('higher', 'PosReg', (148, 154)) 105215 33397040 Metastasis rate was the highest in the pseudohypoxic TCA cycle-related group (63.6%), followed by the pseudohypoxic VHL/EPAS1-related group (50.0%), and the kinase signaling group had no patient with distant metastasis (P=0.006). ('TCA', 'Chemical', 'MESH:D014233', (53, 56)) ('highest', 'Reg', (24, 31)) ('pseudohypoxic', 'Var', (39, 52)) ('rat', 'Species', '10116', (11, 14)) ('patient', 'Species', '9606', (187, 194)) ('Metastasis', 'CPA', (0, 10)) 105222 33397040 While most of the genes have already been reported in previous studies, four novel mutations were discovered in the present study: EPAS1 c.1250G>A (p.Gly417Glu), NF1 c.6215delA (p.His2072LeufsTer10), NF1 c.6777del (p.Gly2260fs), and SDHC exon 2-6 duplication. ('NF', 'Phenotype', 'HP:0001067', (162, 164)) ('c.1250G>A', 'Var', (137, 146)) ('p.Gly2260fs', 'Mutation', 'p.G2260fsX', (215, 226)) ('NF1', 'Gene', (162, 165)) ('c.6777del (p.Gly2260fs', 'Var', (204, 226)) ('SDHC', 'Gene', (233, 237)) ('c.6777del', 'Mutation', 'c.6777del', (204, 213)) ('NF1', 'Gene', (200, 203)) ('p.His2072Leu', 'Var', (178, 190)) ('p.Gly417Glu', 'Mutation', 'rs761014149', (148, 159)) ('c.6215delA', 'Mutation', 'c.6215delA', (166, 176)) ('NF', 'Phenotype', 'HP:0001067', (200, 202)) ('c.6215delA', 'Var', (166, 176)) ('p.Gly2260fs', 'Var', (215, 226)) ('EPAS1', 'Gene', (131, 136)) ('p.His2072Leu', 'SUBSTITUTION', 'None', (178, 190)) ('c.1250G>A', 'Mutation', 'rs761014149', (137, 146)) 105225 33397040 Those with germline mutations underwent screening workup, including history taking, physical examination, measurement of plasma or urine catecholamine levels, and imaging such as CT for the detection of PPGLs. ('measurement', 'MPA', (106, 117)) ('PGL', 'Phenotype', 'HP:0002668', (204, 207)) ('urine catecholamine', 'Phenotype', 'HP:0011976', (131, 150)) ('PPGLs', 'Chemical', '-', (203, 208)) ('men', 'Species', '9606', (113, 116)) ('germline mutations', 'Var', (11, 29)) ('PPGLs', 'Gene', (203, 208)) ('catecholamine', 'Chemical', 'MESH:D002395', (137, 150)) 105232 33397040 20) was found to have RET gene mutation and was diagnosed with PCC, MTC, and MEN2A. ('MTC', 'Disease', (68, 71)) ('mutation', 'Var', (31, 39)) ('diagnosed', 'Reg', (48, 57)) ('RET gene', 'Gene', (22, 30)) ('PCC', 'Disease', (63, 66)) ('PCC', 'Phenotype', 'HP:0002666', (63, 66)) ('MEN2A', 'Gene', (77, 82)) ('MEN2A', 'Gene', '5979', (77, 82)) 105234 33397040 12) was also diagnosed with NF1 due to the same mutation in the NF1 gene; although she did not have PPGL, typical clinical features of neurofibromatosis, cafe-au-lait spots, and neurofibroma were noted. ('neurofibromatosis', 'Phenotype', 'HP:0001067', (135, 152)) ('neurofibroma', 'Phenotype', 'HP:0001067', (178, 190)) ('neurofibroma', 'Disease', (135, 147)) ('neurofibromatosis', 'Disease', 'MESH:C537392', (135, 152)) ('neurofibroma', 'Phenotype', 'HP:0001067', (135, 147)) ('NF', 'Phenotype', 'HP:0001067', (64, 66)) ('cafe-au-lait spots', 'Phenotype', 'HP:0000957', (154, 172)) ('NF1', 'Gene', (64, 67)) ('NF1', 'Disease', (28, 31)) ('neurofibroma', 'Disease', 'MESH:D009455', (135, 147)) ('mutation', 'Var', (48, 56)) ('neurofibroma', 'Disease', 'MESH:D009455', (178, 190)) ('cafe-au-lait', 'Disease', (154, 166)) ('PPGL', 'Chemical', '-', (100, 104)) ('NF', 'Phenotype', 'HP:0001067', (28, 30)) ('neurofibroma', 'Disease', (178, 190)) ('PGL', 'Phenotype', 'HP:0002668', (101, 104)) ('neurofibromatosis', 'Disease', (135, 152)) 105235 33397040 Four family members who had SDHB mutations currently showed no phenotype, as no evidence of PPGL was found after thorough screening workup, including biochemical and radiological tests, and they did not have any symptoms and signs. ('PGL', 'Phenotype', 'HP:0002668', (93, 96)) ('PPGL', 'Chemical', '-', (92, 96)) ('SDHB', 'Gene', (28, 32)) ('mutations', 'Var', (33, 42)) 105239 33397040 There was a higher likelihood of family history of PPGL in patients with germline mutations than those with no mutations. ('PPGL', 'Disease', (51, 55)) ('patients', 'Species', '9606', (59, 67)) ('PGL', 'Phenotype', 'HP:0002668', (52, 55)) ('PPGL', 'Chemical', '-', (51, 55)) ('germline mutations', 'Var', (73, 91)) 105242 33397040 EPAS1, KIF1B, MAX, SDHA, SDHC, and TMEM127 mutations were the first to be reported among Korean patients with PPGL. ('TMEM127', 'Gene', (35, 42)) ('KIF1B', 'Gene', (7, 12)) ('SDHC', 'Gene', (25, 29)) ('EPAS1', 'Gene', (0, 5)) ('mutations', 'Var', (43, 52)) ('patients', 'Species', '9606', (96, 104)) ('PGL', 'Phenotype', 'HP:0002668', (111, 114)) ('SDHA', 'Gene', (19, 23)) ('PPGL', 'Chemical', '-', (110, 114)) 105248 33397040 A previous study also found that a high incidence of PCCs positive for mutations occurred without a family history. ('PCC', 'Phenotype', 'HP:0002666', (53, 56)) ('mutations', 'Var', (71, 80)) ('PCCs', 'Disease', (53, 57)) ('PCCs', 'Chemical', '-', (53, 57)) 105253 33397040 It is known that the risk of metastasis is higher in extra-adrenal location, with a higher level of plasma methoxytyramine (metabolites of dopamine), and in SDHB mutations. ('extra-adrenal', 'Disease', (53, 66)) ('mutations', 'Var', (162, 171)) ('metastasis', 'CPA', (29, 39)) ('higher', 'Reg', (43, 49)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (107, 122)) ('dopamine', 'Chemical', 'MESH:D004298', (139, 147)) ('SDHB', 'Gene', (157, 161)) ('higher', 'PosReg', (84, 90)) 105254 33397040 Our study only showed a significant difference in metastatic rate depending on SDHB mutations. ('mutations', 'Var', (84, 93)) ('metastatic rate', 'CPA', (50, 65)) ('rat', 'Species', '10116', (61, 64)) ('SDHB', 'Gene', (79, 83)) 105255 33397040 Among 15 patients with metastatic PPGL, six patients had SDHB mutations, three patients had VHL mutations, one patient had SDHA mutation, and the other five patients were sporadic. ('patients', 'Species', '9606', (9, 17)) ('patient', 'Species', '9606', (44, 51)) ('patients', 'Species', '9606', (44, 52)) ('patient', 'Species', '9606', (157, 164)) ('VHL', 'Gene', (92, 95)) ('patients', 'Species', '9606', (157, 165)) ('PGL', 'Phenotype', 'HP:0002668', (35, 38)) ('patient', 'Species', '9606', (79, 86)) ('SDHB', 'Gene', (57, 61)) ('patients', 'Species', '9606', (79, 87)) ('patient', 'Species', '9606', (111, 118)) ('patient', 'Species', '9606', (9, 16)) ('PPGL', 'Chemical', '-', (34, 38)) ('mutations', 'Var', (62, 71)) 105269 33397040 To our knowledge, the current result on the frequency of germline mutations in Korean PPGL patients, 32.6%, is relatively higher than the previously reported prevalence in Korean so far (13.2%). ('PPGL', 'Chemical', '-', (86, 90)) ('patients', 'Species', '9606', (91, 99)) ('germline mutations', 'Var', (57, 75)) ('higher', 'PosReg', (122, 128)) ('PGL', 'Phenotype', 'HP:0002668', (87, 90)) ('PPGL', 'Gene', (86, 90)) 105280 33397040 Pseudohypoxic TCA cycle-related PPGLs are reported to have the lowest paraganglia cell differentiation with a decreased expression of catecholamine-synthesizing enzymes leading to depressed catecholamine levels. ('catecholamine', 'Chemical', 'MESH:D002395', (134, 147)) ('PPGLs', 'Chemical', '-', (32, 37)) ('expression', 'MPA', (120, 130)) ('PGL', 'Phenotype', 'HP:0002668', (33, 36)) ('depressed', 'NegReg', (180, 189)) ('depressed catecholamine', 'Phenotype', 'HP:0003334', (180, 203)) ('paraganglia cell differentiation', 'CPA', (70, 102)) ('Pseudohypoxic', 'Var', (0, 13)) ('decreased', 'NegReg', (110, 119)) ('TCA', 'Chemical', 'MESH:D014233', (14, 17)) ('lowest', 'NegReg', (63, 69)) ('catecholamine levels', 'MPA', (190, 210)) ('catecholamine', 'Chemical', 'MESH:D002395', (190, 203)) 105292 33397040 Whole-exome sequencing of these patients might uncover new susceptibility genes that are still unknown, but the validation of the causative relationship between the mutation and the PPGL will be a difficult process. ('patients', 'Species', '9606', (32, 40)) ('mutation', 'Var', (165, 173)) ('PGL', 'Phenotype', 'HP:0002668', (183, 186)) ('PPGL', 'Chemical', '-', (182, 186)) ('PPGL', 'Gene', (182, 186)) 105294 33397040 Previous studies have shown that epigenetic gene silencing of tumor suppressor genes due to promotor methylation is present and considered pathogenic in some patients with PPGLs. ('tumor', 'Phenotype', 'HP:0002664', (62, 67)) ('PPGLs', 'Disease', (172, 177)) ('tumor', 'Disease', (62, 67)) ('PPGLs', 'Chemical', '-', (172, 177)) ('patients', 'Species', '9606', (158, 166)) ('PGL', 'Phenotype', 'HP:0002668', (173, 176)) ('epigenetic gene silencing', 'Var', (33, 58)) ('tumor', 'Disease', 'MESH:D009369', (62, 67)) 105296 33397040 In conclusion, our data present the frequency of germline mutations in Korean patients with PPGL. ('PPGL', 'Disease', (92, 96)) ('PPGL', 'Chemical', '-', (92, 96)) ('patients', 'Species', '9606', (78, 86)) ('PGL', 'Phenotype', 'HP:0002668', (93, 96)) ('germline mutations', 'Var', (49, 67)) 105297 33397040 The expected prevalence of germline mutations of susceptibility genes in PPGL patients is estimated to be approximately 32.6%. ('PGL', 'Phenotype', 'HP:0002668', (74, 77)) ('germline', 'Var', (27, 35)) ('patients', 'Species', '9606', (78, 86)) ('PPGL', 'Disease', (73, 77)) ('PPGL', 'Chemical', '-', (73, 77)) 105306 32948182 The identified germline variant in the SDHD gene seems to be a driver in the development of multiple paragangliomas. ('germline variant', 'Var', (15, 31)) ('SDHD', 'Gene', (39, 43)) ('SDHD', 'Gene', '6392', (39, 43)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (92, 115)) ('paraganglioma', 'Phenotype', 'HP:0002668', (101, 114)) ('multiple paragangliomas', 'Disease', (92, 115)) ('paragangliomas', 'Phenotype', 'HP:0002668', (101, 115)) 105307 32948182 However, different spectra of somatic variants identified in each tumor indicate individual molecular mechanisms underlying their pathogenesis. ('tumor', 'Disease', (66, 71)) ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) ('variants', 'Var', (38, 46)) 105311 32948182 These tumors are highly hereditary and associated with the germline mutations in known susceptibility genes, including SDHx, SDHAF2, TMEM127, MAX, and others. ('SDH', 'Gene', (119, 122)) ('MAX', 'Disease', (142, 145)) ('SDHAF2', 'Gene', (125, 131)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('SDH', 'Gene', '6390', (125, 128)) ('SDHAF2', 'Gene', '54949', (125, 131)) ('tumors', 'Disease', (6, 12)) ('tumors', 'Disease', 'MESH:D009369', (6, 12)) ('associated', 'Reg', (39, 49)) ('TMEM127', 'Gene', (133, 140)) ('TMEM127', 'Gene', '55654', (133, 140)) ('SDH', 'Gene', '6390', (119, 122)) ('SDH', 'Gene', (125, 128)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('germline mutations', 'Var', (59, 77)) 105312 32948182 Mutations in these genes predispose to different forms of paragangliomas (early, syndromic, multiple, and malignant). ('paragangliomas', 'Disease', 'MESH:D010235', (58, 72)) ('paragangliomas', 'Disease', (58, 72)) ('syndromic', 'Disease', 'MESH:D061325', (81, 90)) ('paragangliomas', 'Phenotype', 'HP:0002668', (58, 72)) ('paraganglioma', 'Phenotype', 'HP:0002668', (58, 71)) ('Mutations', 'Var', (0, 9)) ('predispose to', 'Reg', (25, 38)) ('syndromic', 'Disease', (81, 90)) 105343 32948182 According to the literature, weak diffuse staining of the SDHB subunit can reflect pathogenic mutations in any SDHx genes. ('SDHB', 'Gene', (58, 62)) ('pathogenic', 'Reg', (83, 93)) ('mutations', 'Var', (94, 103)) ('SDH', 'Gene', (58, 61)) ('SDH', 'Gene', '6390', (111, 114)) ('SDHB', 'Gene', '6390', (58, 62)) ('SDH', 'Gene', (111, 114)) ('SDH', 'Gene', '6390', (58, 61)) 105344 32948182 We detected weak diffuse SDHB staining in all studied tumors indicating the presence of germline pathogenic mutation in one of the SDHx genes in the patient. ('tumors', 'Disease', 'MESH:D009369', (54, 60)) ('SDH', 'Gene', (25, 28)) ('SDH', 'Gene', '6390', (131, 134)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) ('SDHB', 'Gene', '6390', (25, 29)) ('patient', 'Species', '9606', (149, 156)) ('SDHB', 'Gene', (25, 29)) ('mutation', 'Var', (108, 116)) ('SDH', 'Gene', '6390', (25, 28)) ('tumors', 'Phenotype', 'HP:0002664', (54, 60)) ('SDH', 'Gene', (131, 134)) ('tumors', 'Disease', (54, 60)) 105349 32948182 The exome sequencing data of paragangliomas are available in the NCBI SRA under the accession numbers PRJNA411769 (left CPGL, Pat01), PRJNA476932 (right CPGL, Pat104), and PRJNA561073 (VPGL, Pat6). ('PRJNA476932', 'Var', (134, 145)) ('SRA', 'Gene', (70, 73)) ('CPGL', 'Gene', (153, 157)) ('PRJNA411769', 'Var', (102, 113)) ('CPGL', 'Gene', '55748', (153, 157)) ('CPGL', 'Gene', (120, 124)) ('paragangliomas', 'Disease', (29, 43)) ('paragangliomas', 'Disease', 'MESH:D010235', (29, 43)) ('CPGL', 'Gene', '55748', (120, 124)) ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) ('paragangliomas', 'Phenotype', 'HP:0002668', (29, 43)) ('SRA', 'Gene', '10011', (70, 73)) 105350 32948182 Exome analysis revealed a likely pathogenic germline missense variant in the SDHD gene, NM_003002.3: c.305A > G, p.H102R (chr11: 111959726, rs104894302). ('p.H102R', 'Var', (113, 120)) ('rs104894302', 'Var', (140, 151)) ('SDHD', 'Gene', '6392', (77, 81)) ('pathogenic', 'Reg', (33, 43)) ('rs104894302', 'Mutation', 'rs104894302', (140, 151)) ('NM_003002.3: c.305A > G', 'Mutation', 'rs104894302', (88, 111)) ('p.H102R', 'Mutation', 'rs104894302', (113, 120)) ('SDHD', 'Gene', (77, 81)) 105353 32948182 In left CPGL, we found missense likely pathogenic somatic variants in two genes, TENM3 [NM_001080477: c.C5082A, p.N1694K (chr4: 183696084)] and EPHA5 [NM_004439: c.G682A, p.V228I (chr4: 66467587)]. ('NM_004439: c.G682A', 'Mutation', 'rs1366197544', (151, 169)) ('CPGL', 'Gene', (8, 12)) ('[NM_001080477: c.C5082A', 'Var', (87, 110)) ('EPHA5', 'Gene', '2044', (144, 149)) ('p.N1694K', 'Var', (112, 120)) ('c.C5082A', 'Var', (102, 110)) ('pathogenic', 'Reg', (39, 49)) ('p.V228I', 'Var', (171, 178)) ('p.V228I', 'Mutation', 'p.V228I', (171, 178)) ('CPGL', 'Gene', '55748', (8, 12)) ('p.N1694K', 'Mutation', 'p.N1694K', (112, 120)) ('c.G682A', 'Var', (162, 169)) ('TENM3', 'Gene', (81, 86)) ('TENM3', 'Gene', '55714', (81, 86)) ('EPHA5', 'Gene', (144, 149)) ('NM_001080477: c.C5082A', 'Mutation', 'c.5082C>A', (88, 110)) 105354 32948182 In right CPGL, a variety of likely pathogenic variants (stop-gain, frameshift, and missense) were detected. ('frameshift', 'Var', (67, 77)) ('missense', 'Var', (83, 91)) ('CPGL', 'Gene', '55748', (9, 13)) ('CPGL', 'Gene', (9, 13)) 105355 32948182 Stop-gain variants were found in NRXN3 [NM_004796: c.C1387T, p.Q463X (chr14: 79432478)] and RELN [NM_005045: c.C9052T, p.R3018X (chr7: 103137114)], missense variants were revealed in TRIP12, JAG1, ASXL1, LMBRD1, DHX9, AASS, and TP53. ('DHX9', 'Gene', (212, 216)) ('LMBRD1', 'Gene', (204, 210)) ('NRXN3', 'Gene', '9369', (33, 38)) ('ASXL1', 'Gene', '171023', (197, 202)) ('NM_004796: c.C1387T', 'Mutation', 'rs755520635', (40, 59)) ('p.Q463X', 'Var', (61, 68)) ('TP53', 'Gene', (228, 232)) ('NRXN3', 'Gene', (33, 38)) ('LMBRD1', 'Gene', '55788', (204, 210)) ('TRIP12', 'Gene', '9320', (183, 189)) ('JAG1', 'Gene', '182', (191, 195)) ('AASS', 'Gene', (218, 222)) ('ASXL1', 'Gene', (197, 202)) ('p.Q463X', 'Mutation', 'rs1210884316', (61, 68)) ('p.R3018X', 'Mutation', 'p.R3018X', (119, 127)) ('RELN', 'Gene', '5649', (92, 96)) ('p.R3018X', 'Var', (119, 127)) ('AASS', 'Gene', '10157', (218, 222)) ('TP53', 'Gene', '7157', (228, 232)) ('TRIP12', 'Gene', (183, 189)) ('RELN', 'Gene', (92, 96)) ('NM_005045: c.C9052T', 'Mutation', 'c.9052C>T', (98, 117)) ('DHX9', 'Gene', '1660', (212, 216)) ('JAG1', 'Gene', (191, 195)) 105356 32948182 For the TP53 gene, we found two mutations: a pathogenic/likely pathogenic variant, NM_001126115: c.A446T, p.D149V (chr17: 7577096, rs587781525), that has been reported in ClinVar, and a previously undescribed likely pathogenic variant, NM_000546: c.A170G, p.D57G (chr17: 7579517). ('rs587781525', 'Mutation', 'rs587781525', (131, 142)) ('NM_001126115: c.A446T', 'Mutation', 'rs587781525', (83, 104)) ('p.D149V', 'Var', (106, 113)) ('p.D57G', 'Mutation', 'rs1442824382', (256, 262)) ('p.D57G', 'Var', (256, 262)) ('c.A170G', 'Var', (247, 254)) ('pathogenic/likely', 'Reg', (45, 62)) ('NM_001126115: c.A446T', 'Var', (83, 104)) ('c.A446T', 'Var', (97, 104)) ('TP53', 'Gene', '7157', (8, 12)) ('TP53', 'Gene', (8, 12)) ('NM_000546: c.A170G', 'Mutation', 'rs1442824382', (236, 254)) ('pathogenic', 'Reg', (63, 73)) ('p.D149V', 'Mutation', 'rs587781525', (106, 113)) 105357 32948182 In the case of VPGL, we found a pathogenic variant in mtDNA (MT: 3243, rs199474657) and likely pathogenic missense, frameshift and stop-gain variants in a number of genes (LRP1, SPEN, PPP4R1, XPO6, FBN1, C1QB, and others) (Additional file 2). ('rs199474657', 'Mutation', 'rs199474657', (71, 82)) ('LRP1', 'Gene', (172, 176)) ('mtDNA', 'Disease', (54, 59)) ('FBN1', 'Gene', (198, 202)) ('variant', 'Var', (43, 50)) ('C1QB', 'Gene', '713', (204, 208)) ('LRP1', 'Gene', '4035', (172, 176)) ('missense', 'Var', (106, 114)) ('XPO6', 'Gene', (192, 196)) ('stop-gain', 'NegReg', (131, 140)) ('PPP4R1', 'Gene', (184, 190)) ('SPEN', 'Gene', '23013', (178, 182)) ('FBN1', 'Gene', '2200', (198, 202)) ('PPP4R1', 'Gene', '9989', (184, 190)) ('pathogenic', 'Reg', (32, 42)) ('XPO6', 'Gene', '23214', (192, 196)) ('frameshift', 'Var', (116, 126)) ('C1QB', 'Gene', (204, 208)) ('SPEN', 'Gene', (178, 182)) 105358 32948182 We found a germline pathogenic variant in the SDHD gene in the patient. ('SDHD', 'Gene', '6392', (46, 50)) ('SDHD', 'Gene', (46, 50)) ('pathogenic', 'Reg', (20, 30)) ('patient', 'Species', '9606', (63, 70)) ('variant', 'Var', (31, 38)) 105359 32948182 According to the literature, SDHD mutations are frequently associated with multiple paragangliomas. ('SDHD', 'Gene', '6392', (29, 33)) ('SDHD', 'Gene', (29, 33)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (75, 98)) ('associated', 'Reg', (59, 69)) ('multiple paragangliomas', 'Disease', (75, 98)) ('paraganglioma', 'Phenotype', 'HP:0002668', (84, 97)) ('paragangliomas', 'Phenotype', 'HP:0002668', (84, 98)) ('mutations', 'Var', (34, 43)) 105361 32948182 SDHx mutations were found in 34 patients, of which 22 were diagnosed with multiple paragangliomas. ('patients', 'Species', '9606', (32, 40)) ('SDH', 'Gene', (0, 3)) ('paragangliomas', 'Phenotype', 'HP:0002668', (83, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (74, 97)) ('mutations', 'Var', (5, 14)) ('found', 'Reg', (20, 25)) ('multiple paragangliomas', 'Disease', (74, 97)) ('SDH', 'Gene', '6390', (0, 3)) 105362 32948182 Moreover, 18 out of 22 patients with multiple paragangliomas had mutations in SDHD, 1 patient exhibited SDHB mutation, and 3 patients carried variations in the SDHC gene. ('patients', 'Species', '9606', (125, 133)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (37, 60)) ('patients', 'Species', '9606', (23, 31)) ('SDHD', 'Gene', (78, 82)) ('SDHC', 'Gene', '6391', (160, 164)) ('SDHD', 'Gene', '6392', (78, 82)) ('patient', 'Species', '9606', (23, 30)) ('patient', 'Species', '9606', (86, 93)) ('SDHC', 'Gene', (160, 164)) ('multiple paragangliomas', 'Disease', (37, 60)) ('paraganglioma', 'Phenotype', 'HP:0002668', (46, 59)) ('SDHB', 'Gene', '6390', (104, 108)) ('patient', 'Species', '9606', (125, 132)) ('paragangliomas', 'Phenotype', 'HP:0002668', (46, 60)) ('mutations', 'Var', (65, 74)) ('SDHB', 'Gene', (104, 108)) 105364 32948182 A group of patients (98/147) were tested for the status of SDHx mutations; 74 patients carried mutations in either SDHB (10/74) or SDHD (64/74) genes. ('SDHB', 'Gene', '6390', (115, 119)) ('SDHD', 'Gene', (131, 135)) ('SDH', 'Gene', '6390', (131, 134)) ('SDHB', 'Gene', (115, 119)) ('SDH', 'Gene', '6390', (115, 118)) ('patients', 'Species', '9606', (78, 86)) ('SDH', 'Gene', (59, 62)) ('mutations', 'Var', (95, 104)) ('SDH', 'Gene', (115, 118)) ('patients', 'Species', '9606', (11, 19)) ('SDH', 'Gene', (131, 134)) ('SDHD', 'Gene', '6392', (131, 135)) ('SDH', 'Gene', '6390', (59, 62)) 105365 32948182 SDHB mutations were found in two cases of multiple paragangliomas, whereas 56 had mutated SDHD. ('SDHD', 'Gene', (90, 94)) ('SDHD', 'Gene', '6392', (90, 94)) ('multiple paragangliomas', 'Disease', (42, 65)) ('paragangliomas', 'Phenotype', 'HP:0002668', (51, 65)) ('mutations', 'Var', (5, 14)) ('SDHB', 'Gene', '6390', (0, 4)) ('paraganglioma', 'Phenotype', 'HP:0002668', (51, 64)) ('found', 'Reg', (20, 25)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (42, 65)) ('SDHB', 'Gene', (0, 4)) 105366 32948182 Notably, p.Asp92Tyr mutation in the SDHD gene (one of the Dutch founder mutations) was the most prevalent variant identified in 50% of SDHD mutation carriers (32/64). ('SDHD', 'Gene', '6392', (135, 139)) ('prevalent', 'Reg', (96, 105)) ('SDHD', 'Gene', (36, 40)) ('SDHD', 'Gene', '6392', (36, 40)) ('SDHD', 'Gene', (135, 139)) ('p.Asp92Tyr', 'Mutation', 'rs80338845', (9, 19)) ('p.Asp92Tyr', 'Var', (9, 19)) 105368 32948182 From the 1832 individuals tested, 876 patients carried mutations in either SDHB (673), SDHC (43), or SDHD (160). ('SDHD', 'Gene', (101, 105)) ('SDHD', 'Gene', '6392', (101, 105)) ('mutations', 'Var', (55, 64)) ('SDHC', 'Gene', (87, 91)) ('SDHB', 'Gene', '6390', (75, 79)) ('SDHC', 'Gene', '6391', (87, 91)) ('SDHB', 'Gene', (75, 79)) ('patients', 'Species', '9606', (38, 46)) 105369 32948182 In summary, results from all the studies indicate a high frequency of SDHx mutations in paragangliomas. ('SDH', 'Gene', '6390', (70, 73)) ('mutations', 'Var', (75, 84)) ('SDH', 'Gene', (70, 73)) ('paragangliomas', 'Disease', (88, 102)) ('paraganglioma', 'Phenotype', 'HP:0002668', (88, 101)) ('paragangliomas', 'Phenotype', 'HP:0002668', (88, 102)) ('paragangliomas', 'Disease', 'MESH:D010235', (88, 102)) 105370 32948182 Moreover, most multiple paragangliomas are associated with SDHx variants, predominantly SDHD mutations, which are in accordance with our results. ('SDH', 'Gene', (88, 91)) ('mutations', 'Var', (93, 102)) ('paraganglioma', 'Phenotype', 'HP:0002668', (24, 37)) ('SDHD', 'Gene', (88, 92)) ('SDHD', 'Gene', '6392', (88, 92)) ('paragangliomas', 'Phenotype', 'HP:0002668', (24, 38)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (15, 38)) ('SDH', 'Gene', (59, 62)) ('multiple paragangliomas', 'Disease', (15, 38)) ('SDH', 'Gene', '6390', (88, 91)) ('associated', 'Reg', (43, 53)) ('variants', 'Var', (64, 72)) ('SDH', 'Gene', '6390', (59, 62)) 105372 32948182 Thus, the mutation seems to be quite rare; although, at the same position, histidine replaced with leucine, proline, or tyrosine was found in several cases of hereditary paragangliomas. ('tyrosine', 'Var', (120, 128)) ('found', 'Reg', (133, 138)) ('hereditary paragangliomas', 'Disease', 'MESH:D010235', (159, 184)) ('histidine', 'Chemical', 'MESH:D006639', (75, 84)) ('paraganglioma', 'Phenotype', 'HP:0002668', (170, 183)) ('proline', 'Chemical', 'MESH:D011392', (108, 115)) ('paragangliomas', 'Phenotype', 'HP:0002668', (170, 184)) ('tyrosine', 'Chemical', 'MESH:D014443', (120, 128)) ('hereditary paragangliomas', 'Disease', (159, 184)) ('histidine replaced', 'Var', (75, 93)) ('leucine', 'Chemical', 'MESH:D007930', (99, 106)) 105375 32948182 Mutations in these genes have first been found in paragangliomas/pheochromocytomas. ('found', 'Reg', (41, 46)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (50, 82)) ('paragangliomas/pheochromocytomas', 'Disease', (50, 82)) ('Mutations', 'Var', (0, 9)) ('paraganglioma', 'Phenotype', 'HP:0002668', (50, 63)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (65, 82)) ('paragangliomas', 'Phenotype', 'HP:0002668', (50, 64)) 105377 32948182 In right CPGL, a greater number of likely pathogenic somatic variants were revealed; however, no variants were found in the genes mutated in left CPGL. ('CPGL', 'Gene', '55748', (146, 150)) ('CPGL', 'Gene', (9, 13)) ('CPGL', 'Gene', '55748', (9, 13)) ('CPGL', 'Gene', (146, 150)) ('variants', 'Var', (61, 69)) 105378 32948182 Stop-gain variants were determined in NRXN3 and RELN encoding for proteins that are involved in cell adhesion and cell-cell interactions in neural cells, respectively. ('variants', 'Var', (10, 18)) ('RELN', 'Gene', '5649', (48, 52)) ('RELN', 'Gene', (48, 52)) ('NRXN3', 'Gene', (38, 43)) ('NRXN3', 'Gene', '9369', (38, 43)) 105379 32948182 Both genes were shown to be associated with glioblastoma pathogenesis and variants in these genes were also detected in a number of tumors. ('glioblastoma', 'Disease', (44, 56)) ('detected', 'Reg', (108, 116)) ('glioblastoma', 'Disease', 'MESH:D005909', (44, 56)) ('associated', 'Reg', (28, 38)) ('glioblastoma', 'Phenotype', 'HP:0012174', (44, 56)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('tumors', 'Phenotype', 'HP:0002664', (132, 138)) ('tumors', 'Disease', (132, 138)) ('variants', 'Var', (74, 82)) ('tumors', 'Disease', 'MESH:D009369', (132, 138)) 105381 32948182 The presence of these two variants in TP53 can enhance the deleterious effect on protein function. ('enhance', 'PosReg', (47, 54)) ('TP53', 'Gene', (38, 42)) ('protein function', 'MPA', (81, 97)) ('presence', 'Var', (4, 12)) ('deleterious effect', 'MPA', (59, 77)) ('TP53', 'Gene', '7157', (38, 42)) 105382 32948182 More missense likely pathogenic mutations and frameshift variants were identified in the genes encoding for proteins that participate in important cellular processes, such as ubiquitin fusion degradation and regulation of DNA repair (TRIP12, a tumor suppressor gene), mediation of Notch signaling (JAG1), and transcriptional regulation (DHX9, KLF12, and KAT6B). ('tumor', 'Phenotype', 'HP:0002664', (244, 249)) ('TRIP12', 'Gene', '9320', (234, 240)) ('KLF12', 'Gene', '11278', (343, 348)) ('KAT6B', 'Gene', '23522', (354, 359)) ('JAG1', 'Gene', (298, 302)) ('tumor', 'Disease', (244, 249)) ('ubiquitin fusion degradation', 'MPA', (175, 203)) ('KLF12', 'Gene', (343, 348)) ('tumor', 'Disease', 'MESH:D009369', (244, 249)) ('mutations', 'Var', (32, 41)) ('TRIP12', 'Gene', (234, 240)) ('DHX9', 'Gene', (337, 341)) ('DHX9', 'Gene', '1660', (337, 341)) ('JAG1', 'Gene', '182', (298, 302)) ('frameshift variants', 'Var', (46, 65)) ('KAT6B', 'Gene', (354, 359)) ('pathogenic', 'Reg', (21, 31)) 105383 32948182 Several genes with frameshift mutations are highly expressed in neural cells and involved in the neurite growth (PLPPR5) and the brain development (KAT6B and ADGRV1). ('KAT6B', 'Gene', '23522', (148, 153)) ('PLPPR5', 'Gene', '163404', (113, 119)) ('involved', 'Reg', (81, 89)) ('brain development', 'CPA', (129, 146)) ('neurite growth', 'CPA', (97, 111)) ('frameshift mutations', 'Var', (19, 39)) ('PLPPR5', 'Gene', (113, 119)) ('ADGRV1', 'Gene', (158, 164)) ('ADGRV1', 'Gene', '84059', (158, 164)) ('KAT6B', 'Gene', (148, 153)) 105385 32948182 Stop-gain mutations were revealed in the genes involved in the regulation of cell cycle (LIN54) and transcription (ZNF717), and in the CCDC82 gene, encoding for protein with unknown function. ('ZNF717', 'Gene', (115, 121)) ('cell', 'CPA', (77, 81)) ('LIN54', 'Gene', '132660', (89, 94)) ('CCDC82', 'Gene', '79780', (135, 141)) ('ZNF717', 'Gene', '100131827', (115, 121)) ('LIN54', 'Gene', (89, 94)) ('mutations', 'Var', (10, 19)) ('CCDC82', 'Gene', (135, 141)) 105386 32948182 Variants in ZNF717 were previously observed in gastric, colorectal, and hepatocellular cancer. ('gastric', 'Disease', (47, 54)) ('Variants', 'Var', (0, 8)) ('hepatocellular cancer', 'Phenotype', 'HP:0001402', (72, 93)) ('ZNF717', 'Gene', (12, 18)) ('ZNF717', 'Gene', '100131827', (12, 18)) ('cancer', 'Phenotype', 'HP:0002664', (87, 93)) ('colorectal', 'Disease', 'MESH:D015179', (56, 66)) ('hepatocellular cancer', 'Disease', 'MESH:D006528', (72, 93)) ('observed', 'Reg', (35, 43)) ('hepatocellular cancer', 'Disease', (72, 93)) ('colorectal', 'Disease', (56, 66)) 105387 32948182 Missense mutations in the genes shown to be involved in tumorigenesis that were predicted as likely pathogenic by a majority of prediction tools (C1QB, XPO6, PPP4R1, PPIP5K2, and LRP1), were also found in VPGL. ('XPO6', 'Gene', (152, 156)) ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('PPIP5K2', 'Gene', '23262', (166, 173)) ('tumor', 'Disease', (56, 61)) ('LRP1', 'Gene', '4035', (179, 183)) ('C1QB', 'Gene', '713', (146, 150)) ('C1QB', 'Gene', (146, 150)) ('PPIP5K2', 'Gene', (166, 173)) ('PPP4R1', 'Gene', '9989', (158, 164)) ('XPO6', 'Gene', '23214', (152, 156)) ('PPP4R1', 'Gene', (158, 164)) ('tumor', 'Disease', 'MESH:D009369', (56, 61)) ('LRP1', 'Gene', (179, 183)) ('Missense mutations', 'Var', (0, 18)) 105388 32948182 In addition, we detected mutation in mtDNA that was reported in ClinVar as a germline or somatic pathogenic variant associated with mitochondrial diseases. ('mutation', 'Var', (25, 33)) ('mitochondrial diseases', 'Disease', 'MESH:D028361', (132, 154)) ('mtDNA', 'Gene', (37, 42)) ('mitochondrial diseases', 'Disease', (132, 154)) 105389 32948182 We identified a likely pathogenic germline variant in the SDHD gene and likely pathogenic somatic variants in a number of genes in the patient with multiple paragangliomas (left and right CPGLs, and VPGL). ('paraganglioma', 'Phenotype', 'HP:0002668', (157, 170)) ('patient', 'Species', '9606', (135, 142)) ('CPGLs', 'Phenotype', 'HP:0100635', (188, 193)) ('multiple paragangliomas', 'Disease', 'MESH:D010235', (148, 171)) ('SDHD', 'Gene', (58, 62)) ('paragangliomas', 'Phenotype', 'HP:0002668', (157, 171)) ('multiple paragangliomas', 'Disease', (148, 171)) ('CPGLs', 'Chemical', '-', (188, 193)) ('variant', 'Var', (43, 50)) ('pathogenic', 'Reg', (23, 33)) ('SDHD', 'Gene', '6392', (58, 62)) ('variants', 'Var', (98, 106)) 105391 32948182 Thus, we assume that the variant found in the SDHD gene is a driver mutation and its co-occurrence with other mutations in each of the three tumors can lead to the development of paraganglioma via different molecular pathways. ('SDHD', 'Gene', '6392', (46, 50)) ('paraganglioma', 'Phenotype', 'HP:0002668', (179, 192)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('SDHD', 'Gene', (46, 50)) ('tumors', 'Disease', (141, 147)) ('tumors', 'Disease', 'MESH:D009369', (141, 147)) ('paraganglioma', 'Disease', (179, 192)) ('tumors', 'Phenotype', 'HP:0002664', (141, 147)) ('variant', 'Var', (25, 32)) ('paraganglioma', 'Disease', 'MESH:D010235', (179, 192)) ('lead to', 'Reg', (152, 159)) 105610 29545830 Furthermore, familial paraganglioma syndromes are associated with mutations in genetic encoding for the enzyme succinate dehydrogenase subunits A, B, C, and D (SDHA, SDHB, SDHC, and SDHD). ('mutations', 'Var', (66, 75)) ('SDHD', 'Gene', '6392', (182, 186)) ('SDHA', 'Gene', '6389', (160, 164)) ('SDHB', 'Gene', '6390', (166, 170)) ('SDHB', 'Gene', (166, 170)) ('familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (13, 45)) ('paraganglioma', 'Phenotype', 'HP:0002668', (22, 35)) ('SDHC', 'Gene', (172, 176)) ('SDHC', 'Gene', '6391', (172, 176)) ('SDHA', 'Gene', (160, 164)) ('associated', 'Reg', (50, 60)) ('SDHD', 'Gene', (182, 186)) ('familial paraganglioma syndromes', 'Disease', (13, 45)) 105611 29545830 The association between recurrent, aggressive, and metastatic paragangliomas and the SDHB gene mutation is clinically important. ('metastatic', 'CPA', (51, 61)) ('paragangliomas', 'Disease', (62, 76)) ('paragangliomas', 'Disease', 'MESH:D010235', (62, 76)) ('paragangliomas', 'Phenotype', 'HP:0002668', (62, 76)) ('paraganglioma', 'Phenotype', 'HP:0002668', (62, 75)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('aggressive', 'Disease', (35, 45)) ('mutation', 'Var', (95, 103)) 105616 29545830 Patients with paragangliomas should undergo testing for SDH mutations and patients with metastatic disease should undergo testing for SDHB mutations. ('mutations', 'Var', (139, 148)) ('SDH', 'Gene', (134, 137)) ('SDH', 'Gene', (56, 59)) ('SDH', 'Gene', '6390', (56, 59)) ('patients', 'Species', '9606', (74, 82)) ('paraganglioma', 'Phenotype', 'HP:0002668', (14, 27)) ('paragangliomas', 'Disease', (14, 28)) ('paragangliomas', 'Disease', 'MESH:D010235', (14, 28)) ('Patients', 'Species', '9606', (0, 8)) ('paragangliomas', 'Phenotype', 'HP:0002668', (14, 28)) ('SDHB', 'Gene', '6390', (134, 138)) ('SDHB', 'Gene', (134, 138)) ('mutations', 'Var', (60, 69)) ('SDH', 'Gene', '6390', (134, 137)) 105673 29545830 The sensitivity of 123I-MIBG ranges between 85 and 88% for pheochromocytomas and between 56 and 75% for paragangliomas, whereas its specificity ranges from 70 to 100% and 84 to 100%, respectively. ('pheochromocytomas', 'Disease', 'MESH:D010673', (59, 76)) ('pheochromocytomas', 'Disease', (59, 76)) ('paragangliomas', 'Disease', 'MESH:D010235', (104, 118)) ('paragangliomas', 'Disease', (104, 118)) ('paraganglioma', 'Phenotype', 'HP:0002668', (104, 117)) ('paragangliomas', 'Phenotype', 'HP:0002668', (104, 118)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (59, 76)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (19, 28)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (59, 75)) ('123I-MIBG', 'Var', (19, 28)) 105693 29545830 The sensitivity of 18FDG PET/CT in the detection of pheochromocytomas is high, but unfortunately, its specificity is lower. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (52, 69)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (52, 68)) ('18FDG', 'Chemical', 'MESH:D019788', (19, 24)) ('18FDG PET/CT', 'Var', (19, 31)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (52, 69)) ('pheochromocytomas', 'Disease', (52, 69)) 105699 29545830 68Ga-DOTA-peptides seem to represent the near future of the molecular imaging of pheochromocytomas. ('pheochromocytomas', 'Disease', (81, 98)) ('68Ga-DOTA-peptides', 'Var', (0, 18)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (81, 98)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (81, 97)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (81, 98)) 105701 29545830 Sporadic pheochromocytomas-the sensitivity of 123I-MIBG is similar to the case of PET imaging and superior to somatostatin imaging. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (9, 26)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (9, 25)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (9, 26)) ('pheochromocytomas', 'Disease', (9, 26)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (46, 55)) ('123I-MIBG', 'Var', (46, 55)) 105705 29545830 High sensitivity is exhibited by 18FDG PET/CT in SDHx- and VHL-related sympathetic paragangliomas. ('SDHx-', 'Gene', (49, 54)) ('paragangliomas', 'Disease', (83, 97)) ('paragangliomas', 'Disease', 'MESH:D010235', (83, 97)) ('18FDG', 'Chemical', 'MESH:D019788', (33, 38)) ('18FDG PET/CT', 'Var', (33, 45)) ('VHL', 'Disease', 'MESH:D006623', (59, 62)) ('paragangliomas', 'Phenotype', 'HP:0002668', (83, 97)) ('VHL', 'Disease', (59, 62)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('SDHx', 'Chemical', '-', (49, 53)) 105706 29545830 Metastatic pheochromocytomas and paragangliomas-18F-FDG PET/CT is the preferred method in SDHB-related patients and the usage of 18F-FDOPA PET/CT can be advantageous in the absence of SDHB mutations; in patients with unknown genetic status 18F-FDG PET/CT should be used, optionally in combination with 18F-FDOPA PET/CT or somatostatin receptor imaging. ('SDHB', 'Gene', '6390', (184, 188)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (11, 27)) ('SDHB', 'Gene', '6390', (90, 94)) ('SDHB', 'Gene', (90, 94)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (302, 311)) ('SDHB', 'Gene', (184, 188)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (11, 47)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (11, 28)) ('patients', 'Species', '9606', (203, 211)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (129, 138)) ('18F-FDG', 'Chemical', 'MESH:D019788', (240, 247)) ('Metastatic pheochromocytomas', 'Disease', (0, 28)) ('18F-FDG', 'Chemical', 'MESH:D019788', (48, 55)) ('paragangliomas', 'Phenotype', 'HP:0002668', (33, 47)) ('Metastatic pheochromocytomas', 'Disease', 'MESH:D010673', (0, 28)) ('patients', 'Species', '9606', (103, 111)) ('mutations', 'Var', (189, 198)) ('paraganglioma', 'Phenotype', 'HP:0002668', (33, 46)) 105723 29545830 The risk of catecholamine hypersecretion is significantly increased by biopsy. ('biopsy', 'Var', (71, 77)) ('catecholamine hypersecretion', 'MPA', (12, 40)) ('catecholamine', 'Chemical', 'MESH:D002395', (12, 25)) 105751 29527294 HPP syndromes are due to pathogenic variants of genes, SDHx genes, a group of multiple nuclear genes encoding subunits of the succinate dehydrogenase (SDH) enzyme complex. ('HPP syndromes', 'Disease', 'MESH:C563004', (0, 13)) ('SDH', 'Gene', '6390', (151, 154)) ('SDH', 'Gene', '6390', (55, 58)) ('HPP syndromes', 'Disease', (0, 13)) ('succinate dehydrogenase', 'Gene', (126, 149)) ('SDH', 'Gene', (151, 154)) ('succinate dehydrogenase', 'Gene', '6390', (126, 149)) ('SDH', 'Gene', (55, 58)) ('variants', 'Var', (36, 44)) ('pathogenic', 'Reg', (25, 35)) 105759 29527294 Germline mutations in the onco-suppressor gene, called Vhl leads to the autosomal-dominant hereditary cancer disease VHL. ('Germline mutations', 'Var', (0, 18)) ('cancer', 'Phenotype', 'HP:0002664', (102, 108)) ('VHL', 'Gene', '7428', (117, 120)) ('leads to', 'Reg', (59, 67)) ('autosomal-dominant hereditary cancer disease', 'Disease', (72, 116)) ('Vhl', 'Gene', '7428', (55, 58)) ('autosomal-dominant hereditary cancer disease', 'Disease', 'MESH:D030342', (72, 116)) ('Vhl', 'Gene', (55, 58)) ('VHL', 'Gene', (117, 120)) 105761 29527294 Closely related to this disease are the mutations involving the succinate dehydrogenase genes (SDHx genes) . ('succinate dehydrogenase', 'Gene', (64, 87)) ('related', 'Reg', (8, 15)) ('mutations', 'Var', (40, 49)) ('SDH', 'Gene', '6390', (95, 98)) ('succinate dehydrogenase', 'Gene', '6390', (64, 87)) ('SDH', 'Gene', (95, 98)) 105774 29527294 Genetic analysis found a mutation in the SDHA gene, leading to a heterozygous missense p.Ser445Leu change, defined as pathogenic . ('SDHA', 'Gene', (41, 45)) ('mutation', 'Var', (25, 33)) ('SDHA', 'Gene', '6389', (41, 45)) ('p.Ser445Leu change', 'Var', (87, 105)) ('p.Ser445Leu', 'Mutation', 'rs1296066077', (87, 98)) 105776 29527294 In October, as the pain persisted, he underwent MRI and 18F-DG-PET scan and was diagnosed with several metastasis at: D6-D7, right acetabulum (3cm); vertebral hemi-body D10 (3cm); vertebral body of D12 (2cm); and left iliac crest (1cm). ('pain', 'Phenotype', 'HP:0012531', (19, 23)) ('pain', 'Disease', 'MESH:D010146', (19, 23)) ('8F-DG', 'Chemical', '-', (57, 62)) ('pain', 'Disease', (19, 23)) ('vertebral hemi', 'Phenotype', 'HP:0002937', (149, 163)) ('D6-D7', 'Var', (118, 123)) 105873 27034920 Classic triad of headache, palpitation and diaphoresis in hypertensive patients had the LR+ 6.312 (95 % CI 0.217-183.217) and LR- 0.139 (95 % CI 0.059-0.331). ('hypertensive', 'Disease', 'MESH:D006973', (58, 70)) ('palpitation', 'Disease', (27, 38)) ('headache', 'Disease', (17, 25)) ('hypertensive', 'Disease', (58, 70)) ('patients', 'Species', '9606', (71, 79)) ('headache', 'Phenotype', 'HP:0002315', (17, 25)) ('headache', 'Disease', 'MESH:D006261', (17, 25)) ('diaphoresis', 'Phenotype', 'HP:0000975', (43, 54)) ('palpitation', 'Phenotype', 'HP:0001962', (27, 38)) ('LR+', 'Var', (88, 91)) ('LR- 0.139', 'Var', (126, 135)) ('diaphoresis', 'Disease', (43, 54)) 68659 27034920 Clinical awareness of this tumor should be stressed because 1) Surgical removal is curative in more than 90 % of patients (The 5-year patient survival after removal of benign pheochromocytoma has been ranged from 84 to 96 %), 2) Tumor excision has significant effect on hypertension, the most important cause of pheochromocytoma related mortality and morbidity. ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('patient', 'Species', '9606', (113, 120)) ('hypertension', 'Disease', (270, 282)) ('tumor', 'Disease', (27, 32)) ('patients', 'Species', '9606', (113, 121)) ('hypertension', 'Phenotype', 'HP:0000822', (270, 282)) ('pheochromocytoma', 'Disease', (312, 328)) ('Tumor', 'Phenotype', 'HP:0002664', (229, 234)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (175, 191)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (312, 328)) ('pheochromocytoma', 'Disease', (175, 191)) ('hypertension', 'Disease', 'MESH:D006973', (270, 282)) ('Tumor excision', 'Var', (229, 243)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (312, 328)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (175, 191)) ('tumor', 'Disease', 'MESH:D009369', (27, 32)) ('patient', 'Species', '9606', (134, 141)) 105974 24497809 Gadolinium enhanced magnetic resonance imaging (MRI) of the brain was done to characterise the CNS lesions seen on 68Ga-DOTANOC PET-CT. ('68Ga-DOTANOC', 'Var', (115, 127)) ('CNS', 'Disease', (95, 98)) ('68Ga-DOTANOC', 'Chemical', 'MESH:C504894', (115, 127)) ('Gadolinium', 'Chemical', 'MESH:D005682', (0, 10)) 105982 24497809 The basic underlying abnormality is mutations in the VHL tumour suppressor gene located on the short arm of chromosome 3. ('VHL tumour', 'Disease', 'MESH:D006623', (53, 63)) ('mutations', 'Var', (36, 45)) ('short arm', 'Phenotype', 'HP:0009824', (95, 104)) ('VHL tumour', 'Disease', (53, 63)) ('tumour', 'Phenotype', 'HP:0002664', (57, 63)) 105983 24497809 Tumors are initiated by biallelic VHL inactivation and are associated with abnormal activation of the hypoxic gene response pathways. ('activation', 'PosReg', (84, 94)) ('VHL', 'Disease', 'MESH:D006623', (34, 37)) ('inactivation', 'Var', (38, 50)) ('initiated by', 'Reg', (11, 23)) ('VHL', 'Disease', (34, 37)) ('Tumors', 'Disease', (0, 6)) ('hypoxic gene response pathways', 'Pathway', (102, 132)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) 105996 24497809 Risk of pheochromocytoma and paraganglioma in VHL varies according to the clinical subtype and underlying VHL mutation. ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (8, 42)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (8, 24)) ('VHL', 'Disease', (106, 109)) ('VHL', 'Disease', 'MESH:D006623', (106, 109)) ('mutation', 'Var', (110, 118)) ('VHL', 'Disease', 'MESH:D006623', (46, 49)) ('paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) ('VHL', 'Disease', (46, 49)) 106010 22972948 Recessive germline SDHA and SDHB mutations causing leukodystrophy and isolated mitochondrial complex II deficiency Isolated complex II deficiency is a rare form of mitochondrial disease, accounting for approximately 2% of all respiratory chain deficiency diagnoses. ('II deficiency', 'Disease', 'MESH:D007020', (101, 114)) ('SDHA', 'Gene', '6389', (19, 23)) ('mutations', 'Var', (33, 42)) ('mitochondrial complex II deficiency', 'Disease', 'MESH:C565375', (79, 114)) ('mitochondrial disease', 'Disease', (164, 185)) ('respiratory chain deficiency', 'Disease', 'MESH:D028361', (226, 254)) ('II deficiency', 'Disease', 'MESH:D007020', (132, 145)) ('leukodystrophy', 'Disease', 'MESH:D007966', (51, 65)) ('SDHB', 'Gene', '6390', (28, 32)) ('leukodystrophy', 'Phenotype', 'HP:0002415', (51, 65)) ('causing', 'Reg', (43, 50)) ('mitochondrial complex II deficiency', 'Phenotype', 'HP:0008314', (79, 114)) ('SDHB', 'Gene', (28, 32)) ('mitochondrial complex II deficiency', 'Disease', (79, 114)) ('respiratory chain deficiency', 'Disease', (226, 254)) ('II deficiency', 'Disease', (132, 145)) ('Isolated', 'MPA', (115, 123)) ('leukodystrophy', 'Disease', (51, 65)) ('SDHA', 'Gene', (19, 23)) ('mitochondrial disease', 'Disease', 'MESH:D028361', (164, 185)) 106013 22972948 However, all four SDH genes, together with SDHAF2, have known tumour suppressor functions, with numerous germline and somatic mutations reported in association with hereditary cancer syndromes, including paraganglioma and pheochromocytoma. ('SDH', 'Gene', (43, 46)) ('paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (204, 238)) ('SDH', 'Gene', '6390', (18, 21)) ('tumour', 'Phenotype', 'HP:0002664', (62, 68)) ('cancer', 'Phenotype', 'HP:0002664', (176, 182)) ('paraganglioma', 'Phenotype', 'HP:0002668', (204, 217)) ('hereditary cancer syndromes', 'Disease', (165, 192)) ('tumour', 'Disease', 'MESH:D009369', (62, 68)) ('hereditary cancer syndromes', 'Disease', 'MESH:D009386', (165, 192)) ('SDH', 'Gene', (18, 21)) ('association', 'Interaction', (148, 159)) ('SDHAF2', 'Gene', '54949', (43, 49)) ('tumour', 'Disease', (62, 68)) ('mutations', 'Var', (126, 135)) ('SDHAF2', 'Gene', (43, 49)) ('SDH', 'Gene', '6390', (43, 46)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (222, 238)) 106014 22972948 Here, we report the clinical and molecular investigations of two patients with histochemical and biochemical evidence of a severe, isolated complex II deficiency due to novel SDH gene mutations; the first patient presented with cardiomyopathy and leukodystrophy due to compound heterozygous p.Thr508Ile and p.Ser509Leu SDHA mutations, while the second patient presented with hypotonia and leukodystrophy with elevated brain succinate demonstrated by MR spectroscopy due to a novel, homozygous p.Asp48Val SDHB mutation. ('SDH', 'Gene', (504, 507)) ('p.Thr508Ile', 'Var', (291, 302)) ('mutations', 'Var', (184, 193)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (228, 242)) ('hypotonia', 'Phenotype', 'HP:0001290', (375, 384)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (228, 242)) ('leukodystrophy', 'Disease', (247, 261)) ('hypotonia', 'Disease', 'MESH:D009123', (375, 384)) ('elevated', 'PosReg', (409, 417)) ('patient', 'Species', '9606', (65, 72)) ('p.Asp48Val', 'Var', (493, 503)) ('leukodystrophy', 'Disease', (389, 403)) ('p.Thr508Ile', 'Mutation', 'rs151266052', (291, 302)) ('SDH', 'Gene', '6390', (175, 178)) ('SDHA', 'Gene', (319, 323)) ('SDHB', 'Gene', '6390', (504, 508)) ('SDH', 'Gene', (319, 322)) ('elevated brain succinate', 'Phenotype', 'HP:0020149', (409, 433)) ('brain succinate', 'MPA', (418, 433)) ('hypotonia', 'Disease', (375, 384)) ('isolated complex II deficiency', 'Disease', (131, 161)) ('isolated complex II deficiency', 'Phenotype', 'HP:0008314', (131, 161)) ('SDHA', 'Gene', '6389', (319, 323)) ('patient', 'Species', '9606', (205, 212)) ('leukodystrophy', 'Disease', 'MESH:D007966', (247, 261)) ('SDH', 'Gene', (175, 178)) ('myopathy', 'Phenotype', 'HP:0003198', (234, 242)) ('p.Ser509Leu', 'Var', (307, 318)) ('SDHB', 'Gene', (504, 508)) ('SDH', 'Gene', '6390', (504, 507)) ('leukodystrophy', 'Disease', 'MESH:D007966', (389, 403)) ('patients', 'Species', '9606', (65, 73)) ('leukodystrophy', 'Phenotype', 'HP:0002415', (247, 261)) ('p.Asp48Val', 'Mutation', 'rs202101384', (493, 503)) ('p.Ser509Leu', 'Mutation', 'rs397514541', (307, 318)) ('cardiomyopathy', 'Disease', (228, 242)) ('leukodystrophy', 'Phenotype', 'HP:0002415', (389, 403)) ('isolated complex II deficiency', 'Disease', 'MESH:C565375', (131, 161)) ('succinate', 'Chemical', 'MESH:D019802', (424, 433)) ('SDH', 'Gene', '6390', (319, 322)) ('patient', 'Species', '9606', (352, 359)) 106016 22972948 Evidence from yeast complementation studies provided additional support for pathogenicity of the SDHB mutation. ('mutation', 'Var', (102, 110)) ('SDHB', 'Gene', (97, 101)) ('yeast', 'Species', '4932', (14, 19)) ('SDHB', 'Gene', '6390', (97, 101)) 106017 22972948 Our report represents the first example of SDHB mutation as a cause of inherited mitochondrial respiratory chain disease and extends the SDHA mutation spectrum in patients with isolated complex II deficiency. ('mitochondrial respiratory chain disease', 'Phenotype', 'HP:0200125', (81, 120)) ('patients', 'Species', '9606', (163, 171)) ('SDHB', 'Gene', '6390', (43, 47)) ('inherited mitochondrial respiratory chain disease', 'Disease', 'MESH:D028361', (71, 120)) ('cause', 'Reg', (62, 67)) ('inherited mitochondrial respiratory chain disease', 'Disease', (71, 120)) ('SDHA', 'Gene', '6389', (137, 141)) ('isolated complex II deficiency', 'Disease', 'MESH:C565375', (177, 207)) ('mutation', 'Var', (48, 56)) ('SDHB', 'Gene', (43, 47)) ('isolated complex II deficiency', 'Disease', (177, 207)) ('isolated complex II deficiency', 'Phenotype', 'HP:0008314', (177, 207)) ('SDHA', 'Gene', (137, 141)) 106031 22972948 In addition to primary mitochondrial disease presentations, germline mutations in SDHA, SDHB, SDHC, SDHD and SDHAF2 are recognised causes of familial pheochromocytomas and paragangliomas, thus establishing a link between SDH deficiency and susceptibility to tumourigenesis. ('tumour', 'Disease', (259, 265)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (151, 167)) ('SDHB', 'Gene', (88, 92)) ('SDHA', 'Gene', '6389', (82, 86)) ('SDHC', 'Gene', (94, 98)) ('SDHA', 'Gene', (110, 114)) ('paragangliomas', 'Disease', 'MESH:D010235', (173, 187)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (151, 168)) ('SDHD', 'Gene', '6392', (100, 104)) ('paragangliomas', 'Phenotype', 'HP:0002668', (173, 187)) ('paraganglioma', 'Phenotype', 'HP:0002668', (173, 186)) ('SDHA', 'Gene', '6389', (110, 114)) ('familial pheochromocytomas', 'Disease', 'MESH:C531777', (142, 168)) ('germline mutations', 'Var', (60, 78)) ('SDHAF2', 'Gene', '54949', (110, 116)) ('mitochondrial disease', 'Disease', 'MESH:D028361', (23, 44)) ('SDHAF2', 'Gene', (110, 116)) ('SDHD', 'Gene', (100, 104)) ('SDHC', 'Gene', '6391', (94, 98)) ('causes', 'Reg', (132, 138)) ('familial pheochromocytomas', 'Disease', (142, 168)) ('SDH deficiency', 'Disease', (222, 236)) ('mitochondrial disease', 'Disease', (23, 44)) ('SDHB', 'Gene', '6390', (88, 92)) ('SDH deficiency', 'Disease', 'MESH:D007153', (222, 236)) ('paragangliomas', 'Disease', (173, 187)) ('tumour', 'Phenotype', 'HP:0002664', (259, 265)) ('tumour', 'Disease', 'MESH:D009369', (259, 265)) ('SDHA', 'Gene', (82, 86)) 106032 22972948 The factors determining whether SDH defects lead to neurological disease or impaired tumour suppression are poorly understood, yet both are related to loss of enzyme activity and perturbation of the complex formation. ('neurological disease', 'Disease', 'MESH:D019636', (52, 72)) ('lead to', 'Reg', (44, 51)) ('impaired tumour suppression', 'Disease', 'MESH:D001523', (76, 103)) ('loss of enzyme activity', 'Disease', (151, 174)) ('loss of enzyme activity', 'Disease', 'MESH:D006505', (151, 174)) ('neurological disease', 'Phenotype', 'HP:0000707', (52, 72)) ('defects', 'Var', (36, 43)) ('SDH', 'Gene', '6390', (32, 35)) ('impaired tumour suppression', 'Disease', (76, 103)) ('SDH', 'Gene', (32, 35)) ('tumour', 'Phenotype', 'HP:0002664', (85, 91)) ('neurological disease', 'Disease', (52, 72)) 106033 22972948 On account of its similarity with the human enzyme, the Saccharomyces cerevisiae has proven a useful model system to study the effects of SDH gene mutations, in particular germline missense mutations associated with paraganglioma development. ('human', 'Species', '9606', (38, 43)) ('SDH', 'Gene', '6390', (138, 141)) ('paraganglioma', 'Phenotype', 'HP:0002668', (216, 229)) ('missense mutations', 'Var', (181, 199)) ('Saccharomyces cerevisiae', 'Species', '4932', (56, 80)) ('paraganglioma', 'Disease', (216, 229)) ('associated with', 'Reg', (200, 215)) ('SDH', 'Gene', (138, 141)) ('paraganglioma', 'Disease', 'MESH:D010235', (216, 229)) 106034 22972948 Here, we report two paediatric patients presenting with leukoencephalopathy with isolated complex II deficiency in whom molecular investigations revealed novel compound heterozygous p.Thr508Ile and p.Ser509Leu SDHA mutations in one patient, and a novel, homozygous p.Asp48Val SDHB mutation in the second. ('isolated complex II deficiency', 'Disease', (81, 111)) ('SDHB', 'Gene', '6390', (276, 280)) ('leukoencephalopathy', 'Disease', (56, 75)) ('isolated complex II deficiency', 'Phenotype', 'HP:0008314', (81, 111)) ('p.Ser509Leu', 'Mutation', 'rs397514541', (198, 209)) ('p.Asp48Val', 'Var', (265, 275)) ('SDHB', 'Gene', (276, 280)) ('SDHA', 'Gene', (210, 214)) ('p.Thr508Ile', 'Mutation', 'rs151266052', (182, 193)) ('p.Asp48Val', 'Mutation', 'rs202101384', (265, 275)) ('leukoencephalopathy', 'Phenotype', 'HP:0002352', (56, 75)) ('patient', 'Species', '9606', (31, 38)) ('p.Thr508Ile', 'Var', (182, 193)) ('patients', 'Species', '9606', (31, 39)) ('isolated complex II deficiency', 'Disease', 'MESH:C565375', (81, 111)) ('leukoencephalopathy', 'Disease', 'MESH:D056784', (56, 75)) ('SDHA', 'Gene', '6389', (210, 214)) ('patient', 'Species', '9606', (232, 239)) 106060 22972948 Amino acid residue conservation and predicted impact of the novel SDHA and SDHB variants were investigated using Ensembl release 66, Polyphen2, SIFT and AlignGVGD. ('SIFT', 'Disease', 'None', (144, 148)) ('SDHA', 'Gene', (66, 70)) ('SDHB', 'Gene', '6390', (75, 79)) ('variants', 'Var', (80, 88)) ('SDHB', 'Gene', (75, 79)) ('SIFT', 'Disease', (144, 148)) ('SDHA', 'Gene', '6389', (66, 70)) 106061 22972948 Putative effects of the novel SDHB variant on SDHB tertiary structure were proposed using Phyre2, while residue interactions between the SDH subunits were characterised using Piccolo. ('interactions', 'Interaction', (112, 124)) ('SDH', 'Gene', (30, 33)) ('SDHB', 'Gene', '6390', (46, 50)) ('SDHB', 'Gene', (46, 50)) ('SDH', 'Gene', (137, 140)) ('SDH', 'Gene', '6390', (137, 140)) ('SDH', 'Gene', '6390', (46, 49)) ('effects', 'Reg', (9, 16)) ('SDHB', 'Gene', '6390', (30, 34)) ('SDHB', 'Gene', (30, 34)) ('SDH', 'Gene', '6390', (30, 33)) ('variant', 'Var', (35, 42)) ('SDH', 'Gene', (46, 49)) 106076 22972948 The sdh2 p.Asn42Asp and p.Asn42Val mutant alleles were obtained by site-directed mutagenesis using the overlap extension technique. ('sdh2', 'Gene', '6390', (4, 8)) ('p.Asn42Asp', 'Mutation', 'rs200738857', (9, 19)) ('sdh2', 'Gene', (4, 8)) ('p.Asn42Val', 'Mutation', 'p.N42V', (24, 34)) ('p.Asn42Val', 'Var', (24, 34)) ('p.Asn42Asp', 'Var', (9, 19)) 106083 22972948 Analysis of the coding region of the SDHA gene in Patient 1 revealed two novel heterozygous variants affecting adjacent amino acids within exon 11; a c.1523C>T transition predicting a p.Thr508Ile substitution and a c.1526C>T transition predicting a p.Ser509Leu substitution within the catalytic flavoprotein subunit of complex II (figure 3A). ('p.Ser509Leu', 'Mutation', 'rs397514541', (249, 260)) ('p.Thr508Ile', 'Var', (184, 195)) ('p.Ser509Leu substitution', 'Var', (249, 273)) ('c.1526C>T', 'Var', (215, 224)) ('c.1523C>T', 'Var', (150, 159)) ('Patient', 'Species', '9606', (50, 57)) ('SDHA', 'Gene', '6389', (37, 41)) ('c.1526C>T', 'Mutation', 'rs397514541', (215, 224)) ('c.1523C>T', 'Mutation', 'rs151266052', (150, 159)) ('p.Thr508Ile', 'Mutation', 'rs151266052', (184, 195)) ('SDHA', 'Gene', (37, 41)) 106084 22972948 The lack of an SDHA or SDHAF1 defect in Patient 2 prompted analysis of the SDHB gene, identifying a novel homozygous c.143A>T SDHB transversion in exon 2 that predicts a p.Asp48Val substitution within the catalytic iron-sulphur subunit of SDH (figure 3B). ('predicts a', 'Reg', (159, 169)) ('p.Asp48Val', 'Var', (170, 180)) ('SDHB', 'Gene', '6390', (126, 130)) ('SDH', 'Gene', '6390', (239, 242)) ('SDHAF1', 'Gene', '644096', (23, 29)) ('SDH', 'Gene', '6390', (15, 18)) ('SDH', 'Gene', '6390', (23, 26)) ('SDHA', 'Gene', (15, 19)) ('SDHB', 'Gene', (126, 130)) ('c.143A>T', 'Var', (117, 125)) ('SDHA', 'Gene', (23, 27)) ('SDH', 'Gene', '6390', (126, 129)) ('SDH', 'Gene', (239, 242)) ('SDHA', 'Gene', '6389', (15, 19)) ('SDHB', 'Gene', '6390', (75, 79)) ('SDHAF1', 'Gene', (23, 29)) ('SDHA', 'Gene', '6389', (23, 27)) ('SDH', 'Gene', '6390', (75, 78)) ('p.Asp48Val', 'Mutation', 'rs202101384', (170, 180)) ('SDH', 'Gene', (15, 18)) ('SDH', 'Gene', (23, 26)) ('SDH', 'Gene', (126, 129)) ('Patient', 'Species', '9606', (40, 47)) ('c.143A>T', 'Mutation', 'rs202101384', (117, 125)) ('SDHB', 'Gene', (75, 79)) ('SDH', 'Gene', (75, 78)) 106085 22972948 In silico predictions regarding the putative functional effects of the p.Thr508Ile and p.Ser509Leu SDHA and p.Asp48Val SDHB variants supported a deleterious aetiology. ('SDHA', 'Gene', (99, 103)) ('p.Thr508Ile', 'Var', (71, 82)) ('SDHB', 'Gene', '6390', (119, 123)) ('p.Asp48Val', 'Var', (108, 118)) ('p.Asp48Val', 'Mutation', 'rs202101384', (108, 118)) ('SDHA', 'Gene', '6389', (99, 103)) ('SDHB', 'Gene', (119, 123)) ('p.Thr508Ile', 'Mutation', 'rs151266052', (71, 82)) ('p.Ser509Leu', 'Mutation', 'rs397514541', (87, 98)) 106086 22972948 Phyre2 and Piccolo modelling revealed no obvious conformational differences between predicted tertiary structures of the wild-type and mutant SDHA and SDHB proteins. ('SDHA', 'Gene', '6389', (142, 146)) ('mutant', 'Var', (135, 141)) ('SDHA', 'Gene', (142, 146)) ('SDHB', 'Gene', '6390', (151, 155)) ('SDHB', 'Gene', (151, 155)) 106087 22972948 To assess the impact of the novel SDHA and SDHB variants on the steady-state levels of complex II and the respective subunits' stability, BN-PAGE and SDS-PAGE analyses were performed on available material from the two patients. ('SDHA', 'Gene', (34, 38)) ('SDS', 'Chemical', 'MESH:D012967', (150, 153)) ('patients', 'Species', '9606', (218, 226)) ('variants', 'Var', (48, 56)) ('SDHB', 'Gene', '6390', (43, 47)) ('SDHB', 'Gene', (43, 47)) ('SDHA', 'Gene', '6389', (34, 38)) 106093 22972948 To validate the pathogenic role of the p.Asp48Val SDHB mutation in Patient 2, we performed complementation studies using the Saccharomyces cerevisae strain BY4741, deleted in the SDH2 gene (the yeast orthologue of mammalian SDHB), hereafter referred to as Deltasdh2 strain. ('deleted', 'Var', (164, 171)) ('SDHB', 'Gene', '6390', (50, 54)) ('p.Asp48Val', 'Mutation', 'rs202101384', (39, 49)) ('SDHB', 'Gene', (50, 54)) ('Patient', 'Species', '9606', (67, 74)) ('Saccharomyces', 'Species', '4932', (125, 138)) ('sdh2', 'Gene', '6390', (261, 265)) ('mammalian', 'Species', '9606', (214, 223)) ('BY4741', 'Species', '1247190', (156, 162)) ('p.Asp48Val', 'Var', (39, 49)) ('SDHB', 'Gene', '6390', (224, 228)) ('SDHB', 'Gene', (224, 228)) ('yeast', 'Species', '4932', (194, 199)) ('SDH2', 'Gene', (179, 183)) ('sdh2', 'Gene', (261, 265)) 106096 22972948 The humanised wild-type SDH2 variant allele (p.Asn42Asp) was then introduced into Deltasdh2 yeast mutant and the transformants were tested for oxidative growth on YNB medium supplemented with 2% ethanol or 2% acetate (figure 5B). ('yeast', 'Species', '4932', (92, 97)) ('human', 'Species', '9606', (4, 9)) ('acetate', 'Chemical', 'MESH:D000085', (209, 216)) ('SDH2', 'Gene', (24, 28)) ('p.Asn42Asp', 'Mutation', 'rs200738857', (45, 55)) ('sdh2', 'Gene', '6390', (87, 91)) ('YNB medium', 'Chemical', '-', (163, 173)) ('sdh2', 'Gene', (87, 91)) ('mutant', 'Var', (98, 104)) ('ethanol', 'Chemical', 'MESH:D000431', (195, 202)) 106098 22972948 We then prepared the second construct by introducing the p.Asn42Val substitution, corresponding to the purported pathogenic mutant residue in the SDHB protein of Patient 2, and measured its effect on oxidative growth, SDH activity and respiration. ('oxidative growth', 'MPA', (200, 216)) ('SDH', 'Gene', (218, 221)) ('SDHB', 'Gene', (146, 150)) ('Patient', 'Species', '9606', (162, 169)) ('SDH', 'Gene', '6390', (146, 149)) ('respiration', 'MPA', (235, 246)) ('p.Asn42Val', 'Mutation', 'p.N42V', (57, 67)) ('SDH', 'Gene', '6390', (218, 221)) ('p.Asn42Val', 'Var', (57, 67)) ('SDH', 'Gene', (146, 149)) ('SDHB', 'Gene', '6390', (146, 150)) 106100 22972948 When respiration was measured, both strains sdh2p.Asn42Asp and sdh2p.Asn42Val displayed an oxygen consumption rate equivalent to that of the wild-type strain, suggesting that decreased SDH activity does not impair electron flux through the respiratory chain (figure 5C). ('SDH', 'Gene', '6390', (185, 188)) ('p.Asn42Asp', 'Mutation', 'rs200738857', (48, 58)) ('oxygen consumption', 'MPA', (91, 109)) ('sdh2p.Asn42Asp', 'Var', (44, 58)) ('SDH', 'Gene', (185, 188)) ('electron flux', 'MPA', (214, 227)) ('p.Asn42Val', 'Mutation', 'p.N42V', (67, 77)) ('oxygen', 'Chemical', 'MESH:D010100', (91, 97)) ('impair', 'NegReg', (207, 213)) ('activity', 'MPA', (189, 197)) 106102 22972948 The results obtained indicated that the SDH activity was reduced by approximately 50% in the strain harbouring the p.Asn42Val mutant allele whereas the SDH activity of the humanised wild-type allele was indistinguishable from that of the parental strain (figure 5D). ('p.Asn42Val', 'Mutation', 'p.N42V', (115, 125)) ('human', 'Species', '9606', (172, 177)) ('SDH', 'Gene', '6390', (152, 155)) ('p.Asn42Val mutant', 'Var', (115, 132)) ('activity', 'MPA', (44, 52)) ('SDH', 'Gene', '6390', (40, 43)) ('reduced', 'NegReg', (57, 64)) ('SDH', 'Gene', (152, 155)) ('SDH', 'Gene', (40, 43)) 106104 22972948 Given that so few Krebs cycle enzyme deficiencies are reported, bi-allelic mutations affecting these enzymes appear to be typically incompatible with life; all reported cases are recessive and involve isolated deficiencies of fumarate hydratase, SDH and, most recently, aconitase, and are associated with a severe neurological phenotype and very poor prognosis, being almost always fatal in the neonatal period. ('fumarate hydratase', 'Gene', '2271', (226, 244)) ('enzyme deficiencies', 'Disease', (30, 49)) ('isolated deficiencies', 'Disease', 'MESH:C565377', (201, 222)) ('fumarate hydratase', 'Gene', (226, 244)) ('SDH', 'Gene', '6390', (246, 249)) ('Krebs', 'Chemical', '-', (18, 23)) ('enzyme deficiencies', 'Disease', 'MESH:D008661', (30, 49)) ('associated', 'Reg', (289, 299)) ('aconitase', 'Enzyme', (270, 279)) ('mutations', 'Var', (75, 84)) ('SDH', 'Gene', (246, 249)) ('isolated deficiencies', 'Disease', (201, 222)) 106107 22972948 Mutations in SDHAF1 and SDHA genes are known to cause mitochondrial complex II deficiency; thus, sequencing of these genes was prioritised. ('SDHA', 'Gene', (24, 28)) ('mitochondrial complex II deficiency', 'Disease', 'MESH:C565375', (54, 89)) ('SDHAF1', 'Gene', '644096', (13, 19)) ('cause', 'Reg', (48, 53)) ('mitochondrial complex II deficiency', 'Phenotype', 'HP:0008314', (54, 89)) ('SDHAF1', 'Gene', (13, 19)) ('Mutations', 'Var', (0, 9)) ('SDHA', 'Gene', '6389', (13, 17)) ('mitochondrial complex II deficiency', 'Disease', (54, 89)) ('SDHA', 'Gene', '6389', (24, 28)) ('SDHA', 'Gene', (13, 17)) 106108 22972948 This analysis revealed novel compound heterozygous variants of unknown pathological significance within the SDHA gene (c.1523C>T; p.Thr508Ile and c.1526C>T; p.Ser509Leu) for Patient 1, while analysis of the SDHAF1 and SDHA genes for Patient 2 revealed only wild-type sequence. ('SDHA', 'Gene', '6389', (108, 112)) ('c.1526C>T', 'Mutation', 'rs397514541', (146, 155)) ('SDHAF1', 'Gene', (207, 213)) ('SDHA', 'Gene', '6389', (207, 211)) ('SDHAF1', 'Gene', '644096', (207, 213)) ('SDHA', 'Gene', '6389', (218, 222)) ('SDHA', 'Gene', (108, 112)) ('SDHA', 'Gene', (207, 211)) ('p.Ser509Leu', 'Mutation', 'rs397514541', (157, 168)) ('c.1523C>T', 'Mutation', 'rs151266052', (119, 128)) ('Patient', 'Species', '9606', (174, 181)) ('c.1523C>T; p.Thr508Ile', 'Var', (119, 141)) ('c.1526C>T', 'Var', (146, 155)) ('Patient', 'Species', '9606', (233, 240)) ('SDHA', 'Gene', (218, 222)) ('p.Thr508Ile', 'Mutation', 'rs151266052', (130, 141)) 106109 22972948 A candidate gene sequencing approach led to the discovery of a novel homozygous (c.143A>T; p.Asp48Val) SDHB variant in Patient 2. ('SDHB', 'Gene', (103, 107)) ('c.143A>T', 'Mutation', 'rs202101384', (81, 89)) ('c.143A>T; p.Asp48Val', 'Var', (81, 101)) ('SDHB', 'Gene', '6390', (103, 107)) ('Patient', 'Species', '9606', (119, 126)) ('p.Asp48Val', 'Var', (91, 101)) ('p.Asp48Val', 'Mutation', 'rs202101384', (91, 101)) 106110 22972948 Recessive inheritance of the SDHA and SDHB variants was confirmed by parental DNA screening. ('SDHA', 'Gene', '6389', (29, 33)) ('SDHA', 'Gene', (29, 33)) ('SDHB', 'Gene', '6390', (38, 42)) ('variants', 'Var', (43, 51)) ('SDHB', 'Gene', (38, 42)) 106111 22972948 Functional investigations supported the deleterious effect of the putative SDHA and SDHB mutations, with SDS-PAGE, BN-PAGE and western blotting confirming decreased levels of SDHA and SDHB protein expression for Patients 1 and 2, respectively; both patients had a marked reduction in stable, fully-assembled complex II. ('SDHA', 'Gene', (75, 79)) ('SDHB', 'Gene', '6390', (184, 188)) ('SDHB', 'Gene', '6390', (84, 88)) ('SDS', 'Chemical', 'MESH:D012967', (105, 108)) ('patients', 'Species', '9606', (249, 257)) ('SDHB', 'Gene', (184, 188)) ('stable', 'MPA', (284, 290)) ('decreased', 'NegReg', (155, 164)) ('SDHB', 'Gene', (84, 88)) ('Patients', 'Species', '9606', (212, 220)) ('SDHA', 'Gene', '6389', (175, 179)) ('SDHA', 'Gene', '6389', (75, 79)) ('mutations', 'Var', (89, 98)) ('reduction', 'NegReg', (271, 280)) ('SDHA', 'Gene', (175, 179)) 106112 22972948 While there are numerous reports describing SDHB mutations in the context of hereditary and sporadic cancer pathology, this report represents the first case of SDHB mutation in association with a neurological phenotype. ('cancer', 'Disease', 'MESH:D009369', (101, 107)) ('SDHB', 'Gene', '6390', (160, 164)) ('SDHB', 'Gene', '6390', (44, 48)) ('SDHB', 'Gene', (160, 164)) ('mutations', 'Var', (49, 58)) ('cancer', 'Disease', (101, 107)) ('mutation', 'Var', (165, 173)) ('SDHB', 'Gene', (44, 48)) ('cancer', 'Phenotype', 'HP:0002664', (101, 107)) 106113 22972948 Additional functional evidence supporting the pathogenicity of the novel homozygous SDHB mutation was provided through modelling the p.Asp48Val mutation in Saccharomyces cerevisae Despite a very high degree of conservation across the SDHB/SDH2 genes, a lack of homology at the human p.Asp48 SDHB locus and corresponding Saccharomyces cerevisae p.Asn42 residue was noted and addressed in our experimental design. ('p.Asp48Val', 'Var', (133, 143)) ('p.Asp48Val', 'Mutation', 'rs202101384', (133, 143)) ('SDHB', 'Gene', '6390', (84, 88)) ('Saccharomyces', 'Species', '4932', (320, 333)) ('mutation', 'Var', (89, 97)) ('Asp48', 'Chemical', '-', (285, 290)) ('Asp48', 'Chemical', '-', (135, 140)) ('Saccharomyces', 'Species', '4932', (156, 169)) ('SDHB', 'Gene', '6390', (291, 295)) ('SDHB', 'Gene', (84, 88)) ('SDHB', 'Gene', (291, 295)) ('SDHB', 'Gene', '6390', (234, 238)) ('Asn42', 'Chemical', '-', (346, 351)) ('SDHB', 'Gene', (234, 238)) ('human', 'Species', '9606', (277, 282)) 106114 22972948 Site-directed mutagenesis was employed to generate a p.Asn42Val mutant, in which a marked decrease in SDH activity was observed. ('SDH', 'Gene', (102, 105)) ('p.Asn42Val', 'Mutation', 'p.N42V', (53, 63)) ('p.Asn42Val', 'Var', (53, 63)) ('activity', 'MPA', (106, 114)) ('decrease', 'NegReg', (90, 98)) ('SDH', 'Gene', '6390', (102, 105)) 106116 22972948 Based on Piccolo modelling, the wild-type human p.Asp48 residue is not involved in direct binding to other SDH residues but is located within the highly conserved 2Fe-2S binding domain of the SDHB protein. ('SDH', 'Gene', '6390', (107, 110)) ('human', 'Species', '9606', (42, 47)) ('SDH', 'Gene', (192, 195)) ('SDHB', 'Gene', '6390', (192, 196)) ('Asp48', 'Chemical', '-', (50, 55)) ('SDHB', 'Gene', (192, 196)) ('SDH', 'Gene', '6390', (192, 195)) ('SDH', 'Gene', (107, 110)) ('p.Asp48', 'Var', (48, 55)) 106117 22972948 While p.Asp48 has no obvious primary interaction with other residues of the complex, we hypothesise that it is critical for efficient binding and onward procession of electrons within the mitochondrial respiratory chain. ('p.Asp48', 'Var', (6, 13)) ('binding', 'Interaction', (134, 141)) ('Asp48', 'Chemical', '-', (8, 13)) 106118 22972948 We provide functional evidence linking the primary SDHB defect with specific brain pathology. ('SDHB', 'Gene', (51, 55)) ('defect', 'Var', (56, 62)) ('SDHB', 'Gene', '6390', (51, 55)) 106124 22972948 In addition to their recognised role in cellular respiration, SDHA, SDHB, SDHC, SDHD and SDHAF2 have all been shown to possess tumour suppressor functionality, with loss of heterozygosity of SDH gene germline mutations leading to cellular proliferation in paraganglioma and pheochromocytoma, GIST, small cell renal carcinoma and neuroblastoma. ('paraganglioma', 'Phenotype', 'HP:0002668', (256, 269)) ('SDH', 'Gene', (68, 71)) ('SDH', 'Gene', '6390', (191, 194)) ('SDHD', 'Gene', '6392', (80, 84)) ('SDHAF2', 'Gene', '54949', (89, 95)) ('SDH', 'Gene', (74, 77)) ('SDH', 'Gene', '6390', (62, 65)) ('SDHAF2', 'Gene', (89, 95)) ('SDH', 'Gene', (89, 92)) ('SDHA', 'Gene', (89, 93)) ('SDHB', 'Gene', '6390', (68, 72)) ('SDH', 'Gene', '6390', (80, 83)) ('paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (256, 290)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (274, 290)) ('SDHC', 'Gene', (74, 78)) ('SDH', 'Gene', (191, 194)) ('SDHA', 'Gene', '6389', (89, 93)) ('carcinoma', 'Phenotype', 'HP:0030731', (316, 325)) ('SDHD', 'Gene', (80, 84)) ('SDHA', 'Gene', (62, 66)) ('SDH', 'Gene', (62, 65)) ('leading to', 'Reg', (219, 229)) ('SDHB', 'Gene', (68, 72)) ('SDH', 'Gene', (80, 83)) ('SDHA', 'Gene', '6389', (62, 66)) ('small cell renal carcinoma and neuroblastoma', 'Disease', 'MESH:C538614', (299, 343)) ('SDH', 'Gene', '6390', (68, 71)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (310, 325)) ('tumour', 'Phenotype', 'HP:0002664', (127, 133)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (330, 343)) ('GIST', 'Disease', (293, 297)) ('tumour', 'Disease', 'MESH:D009369', (127, 133)) ('cellular proliferation', 'CPA', (230, 252)) ('mutations', 'Var', (209, 218)) ('SDH', 'Gene', '6390', (74, 77)) ('SDH', 'Gene', '6390', (89, 92)) ('tumour', 'Disease', (127, 133)) ('loss', 'NegReg', (165, 169)) ('SDHC', 'Gene', '6391', (74, 78)) 106125 22972948 The reported penetrance of SDHB mutations is the highest of all SDH genes in familial cases of head and neck paraganglioma and pheochromocytoma, being associated with early-onset tumourigenesis. ('SDH', 'Gene', (64, 67)) ('associated', 'Reg', (151, 161)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (95, 122)) ('paraganglioma and pheochromocytoma', 'Disease', 'MESH:D010673', (109, 143)) ('tumour', 'Phenotype', 'HP:0002664', (179, 185)) ('SDH', 'Gene', (27, 30)) ('SDHB', 'Gene', '6390', (27, 31)) ('mutations', 'Var', (32, 41)) ('tumour', 'Disease', 'MESH:D009369', (179, 185)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (127, 143)) ('SDH', 'Gene', '6390', (64, 67)) ('SDHB', 'Gene', (27, 31)) ('SDH', 'Gene', '6390', (27, 30)) ('tumour', 'Disease', (179, 185)) ('paraganglioma', 'Phenotype', 'HP:0002668', (109, 122)) 106126 22972948 The link between SDH defects and tumourigenesis can be made on more than one level. ('tumour', 'Disease', (33, 39)) ('SDH', 'Gene', (17, 20)) ('tumour', 'Phenotype', 'HP:0002664', (33, 39)) ('defects', 'Var', (21, 28)) ('tumour', 'Disease', 'MESH:D009369', (33, 39)) ('SDH', 'Gene', '6390', (17, 20)) 106130 22972948 Proving the pathogenicity of candidate gene mutations is always important, perhaps more so when the genes involved are also tumour suppressors. ('tumour', 'Disease', 'MESH:D009369', (124, 130)) ('tumour', 'Phenotype', 'HP:0002664', (124, 130)) ('mutations', 'Var', (44, 53)) ('tumour', 'Disease', (124, 130)) 106131 22972948 Having confirmed the SDH mutation as pathogenic, there are further ethical considerations with regard to disclosure of carrier status and prenatal testing. ('pathogenic', 'Reg', (37, 47)) ('mutation', 'Var', (25, 33)) ('SDH', 'Gene', (21, 24)) ('SDH', 'Gene', '6390', (21, 24)) 106132 22972948 A child born to carrier parents has a 25% risk of a severe neurological phenotype, a 50% risk of 'elevated cancer susceptibility' and in the situation where only one parent harbours a SDHB mutation, a 50% risk of elevated cancer susceptibility. ('SDHB', 'Gene', '6390', (184, 188)) ('child', 'Species', '9606', (2, 7)) ('cancer', 'Phenotype', 'HP:0002664', (107, 113)) ('SDHB', 'Gene', (184, 188)) ('elevated cancer', 'Disease', (213, 228)) ('mutation', 'Var', (189, 197)) ('elevated cancer', 'Disease', (98, 113)) ('cancer', 'Phenotype', 'HP:0002664', (222, 228)) ('severe', 'Disease', (52, 58)) ('elevated cancer', 'Disease', 'MESH:D009369', (98, 113)) ('elevated cancer', 'Disease', 'MESH:D009369', (213, 228)) 106134 22972948 While the recessive genetic defects in SDHA and SDHB identified in the two probands described here have caused severe neurological presentations and complex II deficiency, the fact that the parents of Patients 1 and 2 are heterozygous carriers of germline SDH mutations may place them at an elevated risk of tumourigenesis although neither the SDHA (p.Ala508Thr and p.Ser509Thr) nor SDHB (p.Asp48Val) mutations are reported in the Leiden Open Variation Database (http://chromium.liacs.nl/LOVD2/SDH/home.php), suggesting that these particular mutations have not yet been linked to tumourigenesis. ('SDHB', 'Gene', (383, 387)) ('tumour', 'Disease', 'MESH:D009369', (308, 314)) ('tumour', 'Disease', (308, 314)) ('SDH', 'Gene', '6390', (383, 386)) ('SDH', 'Gene', (344, 347)) ('SDHA', 'Gene', (344, 348)) ('SDHB', 'Gene', (48, 52)) ('SDH', 'Gene', (256, 259)) ('SDH', 'Gene', (494, 497)) ('SDH', 'Gene', '6390', (48, 51)) ('SDHA', 'Gene', '6389', (344, 348)) ('II deficiency', 'Disease', (157, 170)) ('SDH', 'Gene', '6390', (39, 42)) ('SDHA', 'Gene', (39, 43)) ('SDH', 'Gene', (383, 386)) ('tumour', 'Phenotype', 'HP:0002664', (580, 586)) ('tumour', 'Disease', 'MESH:D009369', (580, 586)) ('SDH', 'Gene', '6390', (494, 497)) ('SDHA', 'Gene', '6389', (39, 43)) ('tumour', 'Disease', (580, 586)) ('SDH', 'Gene', (48, 51)) ('p.Ser509Thr', 'Mutation', 'p.S509T', (366, 377)) ('genetic defects', 'Disease', 'MESH:D030342', (20, 35)) ('genetic defects', 'Disease', (20, 35)) ('mutations', 'Var', (260, 269)) ('p.Ala508Thr', 'Mutation', 'rs1060503718', (350, 361)) ('tumour', 'Phenotype', 'HP:0002664', (308, 314)) ('linked', 'Reg', (570, 576)) ('SDH', 'Gene', (39, 42)) ('SDHB', 'Gene', '6390', (383, 387)) ('SDH', 'Gene', '6390', (344, 347)) ('II deficiency', 'Disease', 'MESH:D007020', (157, 170)) ('p.Asp48Val', 'Mutation', 'rs202101384', (389, 399)) ('SDH', 'Gene', '6390', (256, 259)) ('mutations', 'Var', (542, 551)) ('SDHB', 'Gene', '6390', (48, 52)) ('Patients', 'Species', '9606', (201, 209)) 106140 22972948 It facilitates access to cascade screening, and given the increased cancer susceptibility, particularly in relation to SDHB defects, routine surveillance would enable early detection of tumours and appropriate intervention. ('cancer', 'Phenotype', 'HP:0002664', (68, 74)) ('defects', 'Var', (124, 131)) ('tumours', 'Disease', 'MESH:D009369', (186, 193)) ('tumours', 'Disease', (186, 193)) ('SDHB', 'Gene', '6390', (119, 123)) ('cancer', 'Disease', 'MESH:D009369', (68, 74)) ('tumour', 'Phenotype', 'HP:0002664', (186, 192)) ('SDHB', 'Gene', (119, 123)) ('cancer', 'Disease', (68, 74)) ('tumours', 'Phenotype', 'HP:0002664', (186, 193)) 106151 21569521 The patient had a recently diagnosed difficult to treat hypertension with bisoprolol and enalapril and for the last year had suffered exertional dyspnea (a recent echocardiography showed normal EF) and a number of similar episodes classed as anxiety attacks. ('anxiety attacks', 'Disease', 'MESH:D001008', (242, 257)) ('exertional dyspnea', 'Phenotype', 'HP:0002875', (134, 152)) ('suffered', 'Reg', (125, 133)) ('bisoprolol', 'Var', (74, 84)) ('anxiety attacks', 'Disease', (242, 257)) ('exertional dyspnea', 'Disease', 'MESH:D004417', (134, 152)) ('anxiety', 'Phenotype', 'HP:0000739', (242, 249)) ('patient', 'Species', '9606', (4, 11)) ('dyspnea', 'Phenotype', 'HP:0002094', (145, 152)) ('exertional dyspnea', 'Disease', (134, 152)) ('hypertension', 'Disease', 'MESH:D006973', (56, 68)) ('enalapril', 'Chemical', 'MESH:D004656', (89, 98)) ('bisoprolol', 'Chemical', 'MESH:D017298', (74, 84)) ('hypertension', 'Disease', (56, 68)) ('difficult', 'Disease', (37, 46)) ('hypertension', 'Phenotype', 'HP:0000822', (56, 68)) 106182 21569521 Hypotension may even be accompanied by shock, usually due to intravascular volume depletion, abrupt cessation of catecholamine secretion due to tumor necrosis, desensitization of adrenergic receptors, or hypocalcemia. ('shock', 'Disease', 'MESH:D012769', (39, 44)) ('Hypotension', 'Phenotype', 'HP:0002615', (0, 11)) ('hypocalcemia', 'Disease', 'MESH:D006996', (204, 216)) ('tumor necrosis', 'Disease', (144, 158)) ('Hypotension', 'Disease', (0, 11)) ('adrenergic receptors', 'Protein', (179, 199)) ('desensitization', 'Var', (160, 175)) ('shock', 'Disease', (39, 44)) ('shock', 'Phenotype', 'HP:0031273', (39, 44)) ('cessation', 'NegReg', (100, 109)) ('hypocalcemia', 'Phenotype', 'HP:0002901', (204, 216)) ('hypocalcemia', 'Disease', (204, 216)) ('tumor necrosis', 'Disease', 'MESH:D009336', (144, 158)) ('Hypotension', 'Disease', 'MESH:D007022', (0, 11)) ('catecholamine secretion', 'MPA', (113, 136)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) ('intravascular volume depletion', 'MPA', (61, 91)) ('catecholamine', 'Chemical', 'MESH:D002395', (113, 126)) 106222 19849834 Inhibition of succinate dehydrogenase dysregulates histone modification in mammalian cells Remodelling of mitochondrial metabolism is a hallmark of cancer. ('hallmark of cancer', 'Disease', 'MESH:D009369', (136, 154)) ('succinate dehydrogenase', 'Gene', '6390', (14, 37)) ('cancer', 'Phenotype', 'HP:0002664', (148, 154)) ('succinate dehydrogenase', 'Gene', (14, 37)) ('histone modification', 'MPA', (51, 71)) ('Inhibition', 'Var', (0, 10)) ('hallmark of cancer', 'Disease', (136, 154)) ('mammalian', 'Species', '9606', (75, 84)) ('mitochondrial metabolism', 'MPA', (106, 130)) 106223 19849834 Mutations in the genes encoding succinate dehydrogenase (SDH), a key Krebs cycle component, are associated with hereditary predisposition to pheochromocytoma and paraganglioma, through mechanisms which are largely unknown. ('pheochromocytoma', 'Disease', (141, 157)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (141, 157)) ('paraganglioma', 'Disease', 'MESH:D010235', (162, 175)) ('SDH', 'Gene', (57, 60)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (141, 157)) ('associated', 'Reg', (96, 106)) ('Krebs', 'Chemical', '-', (69, 74)) ('Mutations', 'Var', (0, 9)) ('paraganglioma', 'Phenotype', 'HP:0002668', (162, 175)) ('succinate dehydrogenase', 'Gene', '6390', (32, 55)) ('paraganglioma', 'Disease', (162, 175)) ('SDH', 'Gene', '6390', (57, 60)) ('succinate dehydrogenase', 'Gene', (32, 55)) 106226 19849834 ChIP analysis revealed that the core promoter of IGFBP7, which encodes a secreted protein upregulated after loss of SDHB, showed decreased occupancy by H3K27me3 in the absence of SDH. ('SDH', 'Gene', '6390', (179, 182)) ('IGFBP7', 'Gene', (49, 55)) ('SDH', 'Gene', (116, 119)) ('loss', 'Var', (108, 112)) ('SDHB', 'Gene', '6390', (116, 120)) ('SDH', 'Gene', (179, 182)) ('occupancy', 'MPA', (139, 148)) ('IGFBP7', 'Gene', '3490', (49, 55)) ('SDHB', 'Gene', (116, 120)) ('H3K27me3', 'Protein', (152, 160)) ('upregulated', 'PosReg', (90, 101)) ('decreased', 'NegReg', (129, 138)) ('SDH', 'Gene', '6390', (116, 119)) 106231 19849834 Recently, SDH genes have been considered as tumour suppressors since germ line inactivating mutations in the SDHB, C and D subunit genes can predispose individuals to hereditary paraganglioma (HPGL) and phaeochromocytoma. ('SDH', 'Gene', '6390', (10, 13)) ('SDH', 'Gene', (109, 112)) ('SDHB', 'Gene', '6390', (109, 113)) ('predispose', 'Reg', (141, 151)) ('tumour', 'Disease', 'MESH:D009369', (44, 50)) ('SDHB', 'Gene', (109, 113)) ('paraganglioma', 'Phenotype', 'HP:0002668', (178, 191)) ('SDH', 'Gene', (10, 13)) ('tumour', 'Disease', (44, 50)) ('SDH', 'Gene', '6390', (109, 112)) ('hereditary paraganglioma (HPGL) and phaeochromocytoma', 'Disease', 'MESH:D010235', (167, 220)) ('tumour', 'Phenotype', 'HP:0002664', (44, 50)) ('inactivating mutations', 'Var', (79, 101)) 106239 19849834 Methylation influences both gene activation and repression, and the effect on chromatin structure depends on the degree of methylation and the specific lysine involved. ('repression', 'MPA', (48, 58)) ('influences', 'Reg', (12, 22)) ('lysine', 'Chemical', 'MESH:D008239', (152, 158)) ('Methylation', 'Var', (0, 11)) ('gene', 'Gene', (28, 32)) ('activation', 'MPA', (33, 43)) 106241 19849834 In this present study we determined whether histone modification was perturbed under conditions of SDH inactivation. ('SDH', 'Gene', (99, 102)) ('inactivation', 'Var', (103, 115)) ('SDH', 'Gene', '6390', (99, 102)) ('perturbed', 'Reg', (69, 78)) ('histone modification', 'MPA', (44, 64)) 106246 19849834 At the same time, analysis of nuclear histones revealed an increase in steady-state levels of both H3K27me3 and H3K36me2 upon SDHD silencing, with H3K36me2 presenting the greatest increase (Figure 2A). ('H3K36me2', 'Var', (112, 120)) ('H3K27me3', 'Protein', (99, 107)) ('H3K36me2', 'Var', (147, 155)) ('SDHD', 'Gene', (126, 130)) ('SDHD', 'Gene', '6392', (126, 130)) ('increase', 'PosReg', (59, 67)) 106248 19849834 Transient silencing of SDHB in Hep3B cells resulted in a robust reduction of SDHB protein as measured by Western blot, and analysis of nuclear histones showed increased steady-state levels of both H3K27me3 and H3K36me2 (Figure 2B). ('H3K27me3', 'Var', (197, 205)) ('SDHB', 'Gene', '6390', (23, 27)) ('SDHB', 'Gene', '6390', (77, 81)) ('Hep3B', 'CellLine', 'CVCL:0326', (31, 36)) ('increased', 'PosReg', (159, 168)) ('H3K36me2', 'Var', (210, 218)) ('SDHB', 'Gene', (23, 27)) ('SDHB', 'Gene', (77, 81)) ('reduction', 'NegReg', (64, 73)) ('silencing', 'NegReg', (10, 19)) ('protein', 'Protein', (82, 89)) 106252 19849834 We therefore forced overexpression of the H3K27me3-specific Jmjd3 histone demethylase in cells. ('H3K27me3-specific', 'Var', (42, 59)) ('Jmjd3', 'Gene', (60, 65)) ('Jmjd3', 'Gene', '23135', (60, 65)) 106254 19849834 Consistently, when overexpressed in the D11 (SDHB-deficient) cell line, wild-type but not mutated Jmjd3 downregulated H3K27me3 levels (Figure 3B). ('H3K27me3 levels', 'MPA', (118, 133)) ('mutated', 'Var', (90, 97)) ('downregulated', 'NegReg', (104, 117)) ('SDHB', 'Gene', '6390', (45, 49)) ('SDHB', 'Gene', (45, 49)) ('Jmjd3', 'Gene', '23135', (98, 103)) ('Jmjd3', 'Gene', (98, 103)) 106255 19849834 Together, these data strongly suggest that SDH gene inactivation leads to a reversible dysregulation of chromatin remodelling by increasing the global level of histone H3 methylation. ('chromatin remodelling', 'MPA', (104, 125)) ('SDH', 'Gene', (43, 46)) ('increasing', 'PosReg', (129, 139)) ('inactivation', 'Var', (52, 64)) ('SDH', 'Gene', '6390', (43, 46)) ('dysregulation', 'MPA', (87, 100)) 106257 19849834 As the full set of genes potentially regulated by this process is unknown, we chose three candidate genes, SNCA, PTGER and KRT17, whose core promoter regions are occupied by H3K27me3, and which have recently been shown to define an epigenetic signature of metastatic prostate cancer. ('KRT17', 'Gene', (123, 128)) ('prostate cancer', 'Phenotype', 'HP:0012125', (267, 282)) ('prostate cancer', 'Disease', (267, 282)) ('PTGER', 'Gene', (113, 118)) ('H3K27me3', 'Var', (174, 182)) ('SNCA', 'Gene', '6622', (107, 111)) ('cancer', 'Phenotype', 'HP:0002664', (276, 282)) ('KRT17', 'Gene', '3872', (123, 128)) ('prostate cancer', 'Disease', 'MESH:D011471', (267, 282)) ('SNCA', 'Gene', (107, 111)) 106259 19849834 Chromatin immunoprecipitation (ChIP) was carried out with anti-H3K27me3 or IgG control antibody on lysates from control pU6 or SDHB-silenced D11 cells. ('SDHB', 'Gene', '6390', (127, 131)) ('SDHB', 'Gene', (127, 131)) ('anti-H3K27me3', 'Var', (58, 71)) 106260 19849834 Consistent with previous results, subsequent PCR analysis detected H3K27me3 occupancy of the promoters of SNCA, PTGER and KRT17; however, there were no apparent differences between control pU6 and the SDHB-deficient D11 cells (Figure 3C). ('SDHB', 'Gene', '6390', (201, 205)) ('SDHB', 'Gene', (201, 205)) ('H3K27me3', 'Var', (67, 75)) ('SNCA', 'Gene', (106, 110)) ('SNCA', 'Gene', '6622', (106, 110)) ('PTGER', 'Gene', (112, 117)) ('KRT17', 'Gene', '3872', (122, 127)) ('KRT17', 'Gene', (122, 127)) 106267 19849834 In the present study we have shown that metabolic perturbations within the mitochondrial SDH complex result in a reversible dysregulation of post-translational histone methylation, leading to increased steady-state levels of methylated lysine on histone H3. ('methylated lysine', 'MPA', (225, 242)) ('perturbations', 'Var', (50, 63)) ('SDH', 'Gene', (89, 92)) ('lysine', 'Chemical', 'MESH:D008239', (236, 242)) ('post-translational histone methylation', 'MPA', (141, 179)) ('SDH', 'Gene', '6390', (89, 92)) ('dysregulation', 'MPA', (124, 137)) ('increased', 'PosReg', (192, 201)) 106272 19849834 Of note this study highlights the type I chief cell as the principal immunoreactive cell type for both H3K27me3 and H3K36me2 in the carotid body tumours tested. ('H3K36me2', 'Var', (116, 124)) ('carotid body tumours', 'Disease', (132, 152)) ('tumours', 'Phenotype', 'HP:0002664', (145, 152)) ('tumour', 'Phenotype', 'HP:0002664', (145, 151)) ('H3K27me3', 'Var', (103, 111)) ('carotid body tumours', 'Disease', 'MESH:D002345', (132, 152)) 106274 19849834 Consistent with this notion, multiparameter DNA flow cytometry analysis of SDHD-related tumours indicates that chief cells are the neoplastic component of paragangliomas: utilizing S-100 labelling as a selective marker for the sustentacular fraction, this study showed that S-100-labelled cells are diploid, and show retention of the wild-type allele, while loss of the wild-type allele was seen in the S-100-negative fraction. ('tumours', 'Phenotype', 'HP:0002664', (88, 95)) ('component of paragangliomas', 'Disease', (142, 169)) ('tumours', 'Disease', 'MESH:D009369', (88, 95)) ('SDHD', 'Gene', '6392', (75, 79)) ('paragangliomas', 'Phenotype', 'HP:0002668', (155, 169)) ('SDHD', 'Gene', (75, 79)) ('tumours', 'Disease', (88, 95)) ('S-100-labelled', 'Var', (274, 288)) ('component of paragangliomas', 'Disease', 'MESH:D010235', (142, 169)) ('paraganglioma', 'Phenotype', 'HP:0002668', (155, 168)) ('tumour', 'Phenotype', 'HP:0002664', (88, 94)) 106281 19849834 For transient silencing of SDHB and SDHD, we used Dharmacon ON-TARGETplus SMARTpool siRNA reagents (Thermo Fisher Scientific, Lafayette, CO): catalogue # L-011771-00 targets SDHB (NM_003000), catalogue # L-006305-00 targets SDHD (NM_003002), and catalogue # D-001810-10-05 is a non-targeting negative control. ('SDHD', 'Gene', (36, 40)) ('SDHD', 'Gene', '6392', (36, 40)) ('NM_003000', 'Var', (180, 189)) ('NM_003002', 'Var', (230, 239)) ('SDHB', 'Gene', '6390', (174, 178)) ('SDHB', 'Gene', '6390', (27, 31)) ('SDHD', 'Gene', (224, 228)) ('silencing', 'NegReg', (14, 23)) ('SDHD', 'Gene', '6392', (224, 228)) ('SDHB', 'Gene', (174, 178)) ('SDHB', 'Gene', (27, 31)) 106283 19849834 Overexpression plasmids encoding the C-terminal functional domain (aa 1141-1641) of the human JMJD3 gene and also a non-functional mutant (His 1388>Ala) were kind gifts from Prof. Gioacchino Natoli (European Institute of Oncology, Milan). ('JMJD3', 'Gene', (94, 99)) ('His 1388>Ala', 'Var', (139, 151)) ('JMJD3', 'Gene', '23135', (94, 99)) ('human', 'Species', '9606', (88, 93)) ('His 1388>Ala', 'Mutation', 'p.H1388A', (139, 151)) ('Oncology', 'Phenotype', 'HP:0002664', (221, 229)) 106287 19849834 Primary antibodies for immunoblot analysis were purchased as follows: SDHB (Molecular Probes, Invitrogen), beta-tubulin (Sigma), H3 and H3K9me3 (Abcam), H3K36me2 and H3K27me3 (Upstate Biotechnology, now Millipore). ('H3K36me2', 'Var', (153, 161)) ('beta-tubulin', 'Protein', (107, 119)) ('SDHB', 'Gene', '6390', (70, 74)) ('H3K9me3', 'Var', (136, 143)) ('SDHB', 'Gene', (70, 74)) ('H3K27me3', 'Var', (166, 174)) 106290 19849834 Sections were incubated overnight (o/n) with an antibody specific for tyrosine hydroxylase (TH) (P40101-0, PelFreez, Arkansas, USA) at 1:500 dilution. ('tyrosine hydroxylase', 'Gene', (70, 90)) ('P40101-0', 'Var', (97, 105)) ('tyrosine hydroxylase', 'Gene', '7054', (70, 90)) 106291 19849834 After washes, anti-rabbit horseradish peroxidase (HRP) (P0217, Dako, Glostrup, Denmark) secondary antibody was applied for 30 min. ('P0217', 'Var', (56, 61)) ('rabbit', 'Species', '9986', (19, 25)) ('horseradish', 'Species', '3704', (26, 37)) ('HRP', 'Gene', (50, 53)) 106294 19849834 Anti-H3K36me2 antibody (Q16695, Millipore, Amsterdam, Netherlands) was used o/n diluted 1:100 in PBS/1% BSA, followed by anti-rabbit HRP (P0217, Dako) for 30 min. ('PBS', 'Disease', 'MESH:D011535', (97, 100)) ('PBS', 'Disease', (97, 100)) ('rabbit', 'Species', '9986', (126, 132)) ('Q16695', 'Var', (24, 30)) 106315 32957442 The protein products of individual CGB genes show amino acid differences at position 117. ('amino acid differences', 'Var', (50, 72)) ('CGB', 'Gene', (35, 38)) ('CGB', 'Gene', '93659', (35, 38)) 106322 32957442 The insertion led to the deletion of a 52-base long segment of the proximal promoter, as well as the entire 5' untranslated region (5'UTR) region of the CGB gene. (', as', 'Gene', '112935892', (84, 88)) ('CGB', 'Gene', (153, 156)) ('to', 'Gene', '6999', (18, 20)) ('deletion', 'Var', (25, 33)) ('CGB', 'Gene', '93659', (153, 156)) 106323 32957442 The consequence of this mutation was the creation of a new promoter sequence for CGB1 and CGB2, a new 5'UTR region with an alternative start codon, and a new first exon. ('CGB2', 'Gene', (90, 94)) ('CGB1', 'Gene', (81, 85)) ('CGB1', 'Gene', '114335', (81, 85)) ('mutation', 'Var', (24, 32)) ('CGB2', 'Gene', '114336', (90, 94)) 106357 32957442 It was also demonstrated that specific targeting of CGB1 and CGB2 with siRNA was much more effective in reducing cancer cell numbers than silencing other CGB genes. ('CGB', 'Gene', '93659', (154, 157)) ('CGB', 'Gene', (52, 55)) ('targeting', 'Var', (39, 48)) ('CGB2', 'Gene', '114336', (61, 65)) ('CGB', 'Gene', '93659', (61, 64)) ('cancer', 'Disease', 'MESH:D009369', (113, 119)) ('CGB', 'Gene', (154, 157)) ('reducing', 'NegReg', (104, 112)) ('cancer', 'Disease', (113, 119)) ('CGB', 'Gene', (61, 64)) ('CGB', 'Gene', '93659', (52, 55)) ('CGB2', 'Gene', (61, 65)) ('cancer', 'Phenotype', 'HP:0002664', (113, 119)) ('CGB1', 'Gene', (52, 56)) ('CGB1', 'Gene', '114335', (52, 56)) 106381 32751108 Molecular studies have clearly shown that CCRCC is universally initiated by Von Hippel Lindau (VHL) gene dysregulation, followed by different types of additional genetic events involving epigenetic regulatory genes, dictating disease progression, aggressiveness, and differential response to treatments. ('Von Hippel Lindau', 'Gene', (76, 93)) ('aggressiveness', 'Disease', 'MESH:D001523', (247, 261)) ('VHL', 'Gene', (95, 98)) ('aggressiveness', 'Disease', (247, 261)) ('initiated by', 'Reg', (63, 75)) ('VHL', 'Gene', '7428', (95, 98)) ('RCC', 'Disease', 'MESH:C538614', (44, 47)) ('Von Hippel Lindau', 'Gene', '7428', (76, 93)) ('RCC', 'Disease', (44, 47)) ('men', 'Species', '9606', (297, 300)) ('aggressiveness', 'Phenotype', 'HP:0000718', (247, 261)) ('dictating', 'Reg', (216, 225)) ('gene dysregulation', 'Var', (100, 118)) ('dysregulation', 'Var', (105, 118)) 106397 32751108 Many autosomal dominant hereditary RCC syndromes have been reported and included those in which germline pathogenic mutations at the level of VHL, MET, FH, SDH A/B/C/D, FLCN, TSC1/TSC2, BAP1, CDC73, and MiTF are involved. ('CDC73', 'Gene', '79577', (192, 197)) ('TSC2', 'Gene', '7249', (180, 184)) ('MET', 'Gene', '79811', (147, 150)) ('SDH A/B/C/D', 'Gene', '6389;6390;6391;6392', (156, 167)) ('VHL', 'Gene', '7428', (142, 145)) ('autosomal dominant hereditary RCC syndromes', 'Disease', (5, 48)) ('TSC2', 'Gene', (180, 184)) ('SDH A/B/C/D', 'Gene', (156, 167)) ('BAP1', 'Gene', '8314', (186, 190)) ('autosomal dominant hereditary RCC syndromes', 'Disease', 'MESH:C538614', (5, 48)) ('mutations', 'Var', (116, 125)) ('TSC1', 'Gene', (175, 179)) ('MiTF', 'Gene', '4286', (203, 207)) ('MET', 'Gene', (147, 150)) ('TSC1', 'Gene', '7248', (175, 179)) ('MiTF', 'Gene', (203, 207)) ('FH', 'Gene', '2271', (152, 154)) ('FLCN', 'Gene', (169, 173)) ('BAP1', 'Gene', (186, 190)) ('CDC73', 'Gene', (192, 197)) ('VHL', 'Gene', (142, 145)) 106402 32751108 The prevalence of germline mutations in known predisposition genes and other genes associated with cancer development was explored in 254 patients with advanced RCC; about 16% carried pathogenic or seemingly pathogenic germline variants at the level of 17 different cancer-predisposition genes: 5.5% of these patients carried mutations at the level of RCC-associated genes, such as FH, BAP1, VHL, MET, SDHA, and SDHB; 10.5% of these patients carried mutations in genes not clearly associated with RCC, including the CHEK2 gene. ('mutations', 'Var', (326, 335)) ('RCC', 'Disease', (497, 500)) ('men', 'Species', '9606', (113, 116)) ('MET', 'Gene', (397, 400)) ('cancer', 'Disease', 'MESH:D009369', (266, 272)) ('RCC', 'Disease', (352, 355)) ('cancer', 'Disease', 'MESH:D009369', (99, 105)) ('BAP1', 'Gene', '8314', (386, 390)) ('RCC', 'Disease', 'MESH:C538614', (497, 500)) ('cancer', 'Phenotype', 'HP:0002664', (99, 105)) ('RCC', 'Disease', (161, 164)) ('patients', 'Species', '9606', (433, 441)) ('mutations', 'Var', (450, 459)) ('SDHB', 'Gene', (412, 416)) ('VHL', 'Gene', (392, 395)) ('patients', 'Species', '9606', (138, 146)) ('RCC', 'Disease', 'MESH:C538614', (352, 355)) ('MET', 'Gene', '79811', (397, 400)) ('CHEK2', 'Gene', (516, 521)) ('BAP1', 'Gene', (386, 390)) ('RCC', 'Disease', 'MESH:C538614', (161, 164)) ('CHEK2', 'Gene', '11200', (516, 521)) ('cancer', 'Disease', (266, 272)) ('SDHA', 'Gene', (402, 406)) ('VHL', 'Gene', '7428', (392, 395)) ('cancer', 'Disease', (99, 105)) ('FH', 'Gene', '2271', (382, 384)) ('cancer', 'Phenotype', 'HP:0002664', (266, 272)) ('patients', 'Species', '9606', (309, 317)) ('variants', 'Var', (228, 236)) ('SDHA', 'Gene', '6389', (402, 406)) 106407 32751108 Germline VHL gene mutations predispose affected subjects to the development of benign and malignant tumors located at the central nervous system and visceral organs. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('VHL', 'Gene', (9, 12)) ('VHL', 'Gene', '7428', (9, 12)) ('men', 'Species', '9606', (71, 74)) ('tumors', 'Phenotype', 'HP:0002664', (100, 106)) ('malignant tumors', 'Disease', (90, 106)) ('tumors located at the central nervous system', 'Phenotype', 'HP:0100006', (100, 144)) ('malignant tumors', 'Disease', 'MESH:D009369', (90, 106)) ('predispose', 'Reg', (28, 38)) ('mutations', 'Var', (18, 27)) 106410 32751108 The genotype correlates with the type of tumor risk observed in VHL syndrome: truncating or missense mutations are associated with type 1 and missense mutations with type 2. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('tumor', 'Disease', (41, 46)) ('VHL syndrome', 'Disease', (64, 76)) ('associated', 'Reg', (115, 125)) ('VHL syndrome', 'Disease', 'MESH:D006623', (64, 76)) ('truncating', 'MPA', (78, 88)) ('missense mutations', 'Var', (142, 160)) ('tumor', 'Disease', 'MESH:D009369', (41, 46)) ('missense mutations', 'Var', (92, 110)) 106411 32751108 Recent studies have explored the relationship between genotype and phenotype in VHL syndrome: G239T mutation was linked with VHL type 2B, associated with renal cell carcinoma, pheochromocytoma, and cerebellar hemangioma; A232T mutation was related to VHL type I, associated with renal cell carcinoma alone; G500A mutation was associated with VHL type II, characterized by pheochromocytoma and cerebellar, retina and spinal cord hemangioblastoma; A293G mutation was associated with pheochromocytoma and thus with type IIC VHL. ('G500A', 'Var', (307, 312)) ('pheochromocytoma', 'Disease', (372, 388)) ('VHL', 'Gene', (80, 83)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (279, 299)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (372, 388)) ('G239T', 'Var', (94, 99)) ('spinal cord hemangioblastoma', 'Disease', (416, 444)) ('renal cell carcinoma', 'Disease', (154, 174)) ('VHL', 'Gene', '7428', (342, 345)) ('G500A', 'SUBSTITUTION', 'None', (307, 312)) ('A293G', 'Var', (446, 451)) ('VHL', 'Gene', (251, 254)) ('A293G', 'SUBSTITUTION', 'None', (446, 451)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (154, 174)) ('VHL syndrome', 'Disease', 'MESH:D006623', (80, 92)) ('cerebellar hemangioma', 'Disease', (198, 219)) ('VHL', 'Gene', (125, 128)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (481, 497)) ('VHL', 'Gene', '7428', (80, 83)) ('cerebellar hemangioma', 'Phenotype', 'HP:0006880', (198, 219)) ('VHL', 'Gene', (521, 524)) ('spinal cord hemangioblastoma', 'Phenotype', 'HP:0009713', (416, 444)) ('A232T', 'Var', (221, 226)) ('spinal cord hemangioblastoma', 'Disease', 'MESH:D018325', (416, 444)) ('VHL', 'Gene', '7428', (251, 254)) ('carcinoma', 'Phenotype', 'HP:0030731', (165, 174)) ('renal cell carcinoma', 'Disease', (279, 299)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (279, 299)) ('pheochromocytoma', 'Disease', (481, 497)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (481, 497)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (176, 192)) ('VHL', 'Gene', '7428', (125, 128)) ('VHL', 'Gene', '7428', (521, 524)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (428, 444)) ('A232T', 'SUBSTITUTION', 'None', (221, 226)) ('cerebellar hemangioma', 'Disease', 'MESH:D006391', (198, 219)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (154, 174)) ('pheochromocytoma', 'Disease', (176, 192)) ('G239T', 'SUBSTITUTION', 'None', (94, 99)) ('associated', 'Reg', (465, 475)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (176, 192)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (372, 388)) ('VHL syndrome', 'Disease', (80, 92)) ('VHL', 'Gene', (342, 345)) ('hemangioma', 'Phenotype', 'HP:0001028', (209, 219)) ('carcinoma', 'Phenotype', 'HP:0030731', (290, 299)) 106412 32751108 The role of different types of germline VHL mutations classified as missense or truncating mutations and two subgroups of missense mutations subdivided according to mutations affecting the HIF-alpha binding site (HM) and mutations not affecting the HIF-alpha binding site (nHM) was also investigated. ('VHL', 'Gene', (40, 43)) ('mutations', 'Var', (44, 53)) ('VHL', 'Gene', '7428', (40, 43)) ('mutations', 'Var', (165, 174)) 106414 32751108 The results of this study showed that: (i) Missense mutations are associated with an increased risk of pheochromocytoma, but a lower risk of renal cancer than truncating mutations; among missense mutations, HM mutations conferred a higher risk than nHM mutations of developing renal cancer. ('pheochromocytoma', 'Disease', 'MESH:D010673', (103, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (103, 119)) ('renal cancer', 'Disease', 'MESH:D007680', (277, 289)) ('cancer', 'Phenotype', 'HP:0002664', (147, 153)) ('renal cancer', 'Phenotype', 'HP:0009726', (277, 289)) ('renal cancer', 'Disease', (141, 153)) ('Missense mutations', 'Var', (43, 61)) ('cancer', 'Phenotype', 'HP:0002664', (283, 289)) ('renal cancer', 'Disease', 'MESH:D007680', (141, 153)) ('renal cancer', 'Phenotype', 'HP:0009726', (141, 153)) ('pheochromocytoma', 'Disease', (103, 119)) ('renal cancer', 'Disease', (277, 289)) 106416 32751108 Patients with VHL disease and asymptomatic family members carriers of the VHL mutation are annually screened for asymptomatic tumors and starting from the age of 16 years are controlled for RCC by magnetic resonance imaging, thus these patients undergo RCC removal when the tumor mass reaches 3 cm of diameter. ('tumors', 'Phenotype', 'HP:0002664', (126, 132)) ('RCC', 'Disease', 'MESH:C538614', (190, 193)) ('RCC', 'Disease', 'MESH:C538614', (253, 256)) ('VHL disease', 'Disease', 'MESH:D006623', (14, 25)) ('tumor', 'Phenotype', 'HP:0002664', (126, 131)) ('VHL', 'Gene', (14, 17)) ('tumor', 'Disease', (274, 279)) ('VHL disease', 'Disease', (14, 25)) ('tumors', 'Disease', (126, 132)) ('tumor', 'Disease', 'MESH:D009369', (274, 279)) ('patients', 'Species', '9606', (236, 244)) ('Patients', 'Species', '9606', (0, 8)) ('undergo', 'Reg', (245, 252)) ('VHL', 'Gene', '7428', (14, 17)) ('tumors', 'Disease', 'MESH:D009369', (126, 132)) ('VHL', 'Gene', (74, 77)) ('tumor', 'Phenotype', 'HP:0002664', (274, 279)) ('tumor', 'Disease', (126, 131)) ('mutation', 'Var', (78, 86)) ('RCC', 'Disease', (190, 193)) ('RCC', 'Disease', (253, 256)) ('VHL', 'Gene', '7428', (74, 77)) ('tumor', 'Disease', 'MESH:D009369', (126, 131)) 106418 32751108 Both in CCRCC with germline VHL mutation and in sporadic CCRCC, the most relevant copy number alterations occurred at the level of 3p deletion involving the VHL gene, p9 deletion involving CDKN2A and CDKN2B genes, and of 8q amplification involving the MYC gene amplification. ('CDKN2B', 'Gene', '1030', (200, 206)) ('MYC', 'Gene', '4609', (252, 255)) ('VHL', 'Gene', (157, 160)) ('CDKN2A', 'Gene', '1029', (189, 195)) ('RCC', 'Disease', (59, 62)) ('VHL', 'Gene', '7428', (157, 160)) ('amp', 'Chemical', 'MESH:D000249', (224, 227)) ('VHL', 'Gene', (28, 31)) ('RCC', 'Disease', (10, 13)) ('mutation', 'Var', (32, 40)) ('RCC', 'Disease', 'MESH:C538614', (59, 62)) ('copy number', 'MPA', (82, 93)) ('p9 deletion', 'Var', (167, 178)) ('MYC', 'Gene', (252, 255)) ('amp', 'Chemical', 'MESH:D000249', (261, 264)) ('RCC', 'Disease', 'MESH:C538614', (10, 13)) ('CDKN2B', 'Gene', (200, 206)) ('VHL', 'Gene', '7428', (28, 31)) ('CDKN2A', 'Gene', (189, 195)) ('alterations', 'Reg', (94, 105)) 106419 32751108 Several studies have explored the evolution at clonal level of RCCs developing in individuals with germline VHL mutations. ('RCC', 'Disease', (63, 66)) ('S', 'Chemical', 'MESH:D013455', (0, 1)) ('VHL', 'Gene', '7428', (108, 111)) ('mutations', 'Var', (112, 121)) ('VHL', 'Gene', (108, 111)) ('RCC', 'Disease', 'MESH:C538614', (63, 66)) 106420 32751108 The genomic analysis on multi-focal RCCs developing in an individual with germline VHL mutation showed that tumors arising in this multifocal context are clonally independent and harbor distinct secondary events, such as loss of chromosome 3p; despite this heterogeneity, the genetic alterations converge upon PI3K-AKT-mTOR signaling pathway; the tumors display only a minimal intratumoral heterogeneity. ('RCC', 'Disease', (36, 39)) ('tumors', 'Phenotype', 'HP:0002664', (347, 353)) ('tumor', 'Disease', (108, 113)) ('AKT', 'Gene', (315, 318)) ('tumor', 'Phenotype', 'HP:0002664', (347, 352)) ('tumor', 'Disease', 'MESH:D009369', (108, 113)) ('RCC', 'Disease', 'MESH:C538614', (36, 39)) ('tumor', 'Disease', (382, 387)) ('tumors', 'Disease', (347, 353)) ('tumors', 'Phenotype', 'HP:0002664', (108, 114)) ('mTOR', 'Gene', (319, 323)) ('tumor', 'Disease', 'MESH:D009369', (382, 387)) ('VHL', 'Gene', (83, 86)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('tumors', 'Disease', 'MESH:D009369', (347, 353)) ('AKT', 'Gene', '207', (315, 318)) ('tumors', 'Disease', (108, 114)) ('converge', 'Reg', (296, 304)) ('mutation', 'Var', (87, 95)) ('mTOR', 'Gene', '2475', (319, 323)) ('tumor', 'Phenotype', 'HP:0002664', (382, 387)) ('VHL', 'Gene', '7428', (83, 86)) ('tumor', 'Disease', (347, 352)) ('tumors', 'Disease', 'MESH:D009369', (108, 114)) ('tumor', 'Disease', 'MESH:D009369', (347, 352)) 106421 32751108 These observations suggested the development of RCC from germline VHL mutation, follow the evolutionary principles of complementary contingency and convergence. ('germline', 'Var', (57, 65)) ('RCC', 'Disease', 'MESH:C538614', (48, 51)) ('men', 'Species', '9606', (124, 127)) ('men', 'Species', '9606', (40, 43)) ('VHL', 'Gene', (66, 69)) ('VHL', 'Gene', '7428', (66, 69)) ('RCC', 'Disease', (48, 51)) 106423 32751108 The pattern of nucleotide substitution and the number and type of copy number alterations follow an individual pattern, thus suggesting that the genetic background and the environment plays a significant role in the types of secondary genetic alterations occurring during the development of RCCs with germline VHL mutations. ('men', 'Species', '9606', (179, 182)) ('VHL', 'Gene', (310, 313)) ('mutations', 'Var', (314, 323)) ('VHL', 'Gene', '7428', (310, 313)) ('RCC', 'Disease', (291, 294)) ('men', 'Species', '9606', (283, 286)) ('RCC', 'Disease', 'MESH:C538614', (291, 294)) 106424 32751108 Studies based on the analysis of early renal cancers derived from nephrectomies performed in VHL disease patients provided evidence that biallelic inactivation of VHL is observed in preneoplastic renal lesions, in association with HIF activation. ('VHL', 'Gene', '7428', (163, 166)) ('renal cancer', 'Phenotype', 'HP:0009726', (39, 51)) ('patients', 'Species', '9606', (105, 113)) ('cancer', 'Phenotype', 'HP:0002664', (45, 51)) ('VHL', 'Gene', '7428', (93, 96)) ('preneoplastic renal lesions', 'Disease', 'MESH:D007674', (182, 209)) ('VHL disease', 'Disease', (93, 104)) ('biallelic', 'Var', (137, 146)) ('renal cancers', 'Disease', 'MESH:D007680', (39, 52)) ('renal cancers', 'Disease', (39, 52)) ('cancers', 'Phenotype', 'HP:0002664', (45, 52)) ('preneoplastic renal lesions', 'Disease', (182, 209)) ('VHL disease', 'Disease', 'MESH:D006623', (93, 104)) ('VHL', 'Gene', (93, 96)) ('VHL', 'Gene', (163, 166)) ('preneoplastic renal lesions', 'Phenotype', 'HP:0009726', (182, 209)) ('S', 'Chemical', 'MESH:D013455', (0, 1)) 106426 32751108 Biallelic VHL inactivation is also required for the development of sporadic renal cancer, but requires a longer time than in VHL disease since the two VHL alleles must be inactivated. ('sporadic renal cancer', 'Disease', (67, 88)) ('VHL', 'Gene', '7428', (10, 13)) ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('VHL', 'Gene', (125, 128)) ('VHL', 'Gene', '7428', (125, 128)) ('inactivation', 'Var', (14, 26)) ('VHL disease', 'Disease', (125, 136)) ('VHL', 'Gene', (151, 154)) ('sporadic renal cancer', 'Disease', 'MESH:D007680', (67, 88)) ('VHL', 'Gene', (10, 13)) ('renal cancer', 'Phenotype', 'HP:0009726', (76, 88)) ('VHL', 'Gene', '7428', (151, 154)) ('VHL disease', 'Disease', 'MESH:D006623', (125, 136)) ('men', 'Species', '9606', (59, 62)) 106427 32751108 Sporadic CCRCC displays loss of the short arm of chromosome 3 (observed in >=90% of patients), with a deletion region encompassing four tumor suppressor genes that are also frequent targets for inactivating point mutations on the other chromosomal allele: VHL (with point mutations in 60-70% of cases and epigenetic silencing in about 5-10% of patients), PBRM1 (40%), BAP1 (10%), and SETD2 (10%). ('SETD2', 'Gene', (384, 389)) ('RCC', 'Disease', (11, 14)) ('point mutations', 'Var', (266, 281)) ('patients', 'Species', '9606', (84, 92)) ('short arm', 'Phenotype', 'HP:0009824', (36, 45)) ('SETD2', 'Gene', '29072', (384, 389)) ('S', 'Chemical', 'MESH:D013455', (384, 385)) ('epigenetic silencing', 'Var', (305, 325)) ('RCC', 'Disease', 'MESH:C538614', (11, 14)) ('tumor', 'Disease', (136, 141)) ('patients', 'Species', '9606', (344, 352)) ('PBRM1', 'Gene', '55193', (355, 360)) ('BAP1', 'Gene', '8314', (368, 372)) ('VHL', 'Gene', (256, 259)) ('tumor', 'Disease', 'MESH:D009369', (136, 141)) ('PBRM1', 'Gene', (355, 360)) ('loss', 'NegReg', (24, 28)) ('S', 'Chemical', 'MESH:D013455', (0, 1)) ('BAP1', 'Gene', (368, 372)) ('VHL', 'Gene', '7428', (256, 259)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) 106430 32751108 In VHL disease, one allele is altered through germline mutations and this explains the high penetrance and the accelerated RCC development observed in these patients. ('accelerated', 'PosReg', (111, 122)) ('germline mutations', 'Var', (46, 64)) ('VHL disease', 'Disease', 'MESH:D006623', (3, 14)) ('patients', 'Species', '9606', (157, 165)) ('RCC', 'Disease', (123, 126)) ('RCC', 'Disease', 'MESH:C538614', (123, 126)) ('VHL disease', 'Disease', (3, 14)) ('men', 'Species', '9606', (134, 137)) 106431 32751108 The retrospective study analysis of the natural history of RCC developing in VHL disease showed that: (i) The mean age of onset was 38.8 years, with a mean initial tumor size of 3.1 cm; (ii) the mean tumor growth rate was 0.49 cm/year; (iii) some factors, such as later age of onset, larger initial tumor size, missense mutation, mutations located at the level of exon 3, were associated with faster tumor growth; (iv) bilateral tumors, large initial tumors, fast tumor growth, and presence of metastases are high-risk factors for poor prognosis in germline VHL-related RCCs. ('tumor', 'Disease', (464, 469)) ('VHL disease', 'Disease', 'MESH:D006623', (77, 88)) ('tumor', 'Disease', (164, 169)) ('tumors', 'Disease', (429, 435)) ('VHL', 'Gene', (77, 80)) ('tumor', 'Disease', (400, 405)) ('VHL disease', 'Disease', (77, 88)) ('tumor', 'Disease', 'MESH:D009369', (464, 469)) ('tumor', 'Disease', 'MESH:D009369', (164, 169)) ('RCC', 'Disease', 'MESH:C538614', (570, 573)) ('tumors', 'Phenotype', 'HP:0002664', (451, 457)) ('metastases', 'Disease', 'MESH:D009362', (494, 504)) ('RCC', 'Disease', (59, 62)) ('tumor', 'Phenotype', 'HP:0002664', (299, 304)) ('tumor', 'Disease', 'MESH:D009369', (400, 405)) ('tumors', 'Disease', 'MESH:D009369', (429, 435)) ('tumor', 'Disease', (200, 205)) ('VHL', 'Gene', '7428', (77, 80)) ('metastases', 'Disease', (494, 504)) ('tumors', 'Disease', (451, 457)) ('VHL', 'Gene', (558, 561)) ('missense mutation', 'Var', (311, 328)) ('RCC', 'Disease', 'MESH:C538614', (59, 62)) ('tumor', 'Phenotype', 'HP:0002664', (164, 169)) ('tumor', 'Disease', 'MESH:D009369', (200, 205)) ('tumor', 'Disease', (429, 434)) ('tumor', 'Phenotype', 'HP:0002664', (400, 405)) ('tumor', 'Disease', (451, 456)) ('tumor', 'Disease', 'MESH:D009369', (429, 434)) ('tumors', 'Disease', 'MESH:D009369', (451, 457)) ('VHL', 'Gene', '7428', (558, 561)) ('tumor', 'Disease', 'MESH:D009369', (451, 456)) ('tumors', 'Phenotype', 'HP:0002664', (429, 435)) ('mutations', 'Var', (330, 339)) ('tumor', 'Disease', (299, 304)) ('tumor', 'Phenotype', 'HP:0002664', (200, 205)) ('bilateral', 'Disease', (419, 428)) ('tumor', 'Disease', 'MESH:D009369', (299, 304)) ('RCC', 'Disease', (570, 573)) ('tumor', 'Phenotype', 'HP:0002664', (429, 434)) 106433 32751108 Germline mutations located at the level of the tyrosine kinase domain of the hepatocyte growth factor receptor, c-Met, are responsible for hereditary papillary renal cell cancer (HPRCC) type I, a very rare form of familial kidney cancer. ('hepatocyte growth factor receptor', 'Gene', (77, 110)) ('familial kidney cancer', 'Disease', 'MESH:D007680', (214, 236)) ('responsible for', 'Reg', (123, 138)) ('papillary renal cell cancer', 'Phenotype', 'HP:0006766', (150, 177)) ('cancer', 'Phenotype', 'HP:0002664', (230, 236)) ('PRCC', 'Gene', '5546', (180, 184)) ('familial kidney cancer', 'Disease', (214, 236)) ('kidney cancer', 'Phenotype', 'HP:0009726', (223, 236)) ('hereditary papillary renal cell cancer', 'Disease', 'MESH:C538614', (139, 177)) ('Germline', 'Var', (0, 8)) ('c-Met', 'Gene', (112, 117)) ('hereditary papillary renal cell cancer', 'Disease', (139, 177)) ('c-Met', 'Gene', '4233', (112, 117)) ('hepatocyte growth factor receptor', 'Gene', '4233', (77, 110)) ('PRCC', 'Gene', (180, 184)) ('cancer', 'Phenotype', 'HP:0002664', (171, 177)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (160, 177)) 106434 32751108 The mutants c-Met observed in these patients in suitable cellular and animal models display enhanced and dysregulated kinase activity and induce cell transformation and tumorigenicity. ('cell transformation', 'CPA', (145, 164)) ('mutants', 'Var', (4, 11)) ('patients', 'Species', '9606', (36, 44)) ('tumor', 'Disease', 'MESH:D009369', (169, 174)) ('tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('induce', 'Reg', (138, 144)) ('c-Met', 'Gene', (12, 17)) ('tumor', 'Disease', (169, 174)) ('c-Met', 'Gene', '4233', (12, 17)) ('dysregulated kinase activity', 'MPA', (105, 133)) ('enhanced', 'PosReg', (92, 100)) 106435 32751108 A fundamental study by Schmidt and coworkers in 1997 led to the identification of missense mutations located in the tyrosine kinase domain of the MET gene in the germline of affected members of HPRCC families, as well as in a subset of sporadic PRCCs. ('PRCC', 'Gene', '5546', (195, 199)) ('missense mutations located in', 'Var', (82, 111)) ('PRCC', 'Gene', (195, 199)) ('MET', 'Gene', '79811', (146, 149)) ('PRCC', 'Gene', '5546', (245, 249)) ('S', 'Chemical', 'MESH:D013455', (23, 24)) ('MET', 'Gene', (146, 149)) ('men', 'Species', '9606', (7, 10)) ('PRCC', 'Gene', (245, 249)) 106436 32751108 The same authors in a study on PRCCs identified 13% of cases with c-MET mutations: half of these patients were found to harbor germline c-MET and the rest only somatic c-MET mutations. ('mutations', 'Var', (72, 81)) ('c-MET', 'Gene', '4233', (136, 141)) ('c-MET', 'Gene', (66, 71)) ('PRCC', 'Gene', '5546', (31, 35)) ('c-MET', 'Gene', '4233', (168, 173)) ('c-MET', 'Gene', '4233', (66, 71)) ('PRCC', 'Gene', (31, 35)) ('c-MET', 'Gene', (136, 141)) ('c-MET', 'Gene', (168, 173)) ('patients', 'Species', '9606', (97, 105)) 106438 32751108 MET mutations cause constitutive activation of the cytoplasmic domain of the receptor, stimulate cell growth, and represent the main pathogenetic event in the development of HPRCC. ('MET', 'Gene', '79811', (0, 3)) ('cell growth', 'CPA', (97, 108)) ('activation', 'PosReg', (33, 43)) ('PRCC', 'Gene', (175, 179)) ('MET', 'Gene', (0, 3)) ('cytoplasmic domain', 'MPA', (51, 69)) ('men', 'Species', '9606', (166, 169)) ('stimulate', 'PosReg', (87, 96)) ('mutations', 'Var', (4, 13)) ('PRCC', 'Gene', '5546', (175, 179)) 106439 32751108 Direct DNA diagnosis in HPRCC is based on the identification of mutations at the level of MET exons 15-21, encoding the cytoplasmic domain of the receptor. ('PRCC', 'Gene', '5546', (25, 29)) ('PRCC', 'Gene', (25, 29)) ('MET', 'Gene', '79811', (90, 93)) ('MET', 'Gene', (90, 93)) ('mutations', 'Var', (64, 73)) 106441 32751108 Papillary renal neoplasms from both patients with hereditary or somatic c-MET mutations share the same histologic features typical of chromophil basophilic type I PRCC, including macrophages and psammoma bodies; a papillary and/or tubulopapillary architecture is observed in all these tumors; clear cells were commonly detected in variable proportions in all c-MET-mutated PRCCs. ('PRCC', 'Gene', (373, 377)) ('Papillary renal neoplasms', 'Disease', 'MESH:D007681', (0, 25)) ('PRCC', 'Gene', '5546', (373, 377)) ('c-MET', 'Gene', (72, 77)) ('c-MET', 'Gene', (359, 364)) ('patients', 'Species', '9606', (36, 44)) ('tumor', 'Phenotype', 'HP:0002664', (285, 290)) ('neoplasms', 'Phenotype', 'HP:0002664', (16, 25)) ('mutations', 'Var', (78, 87)) ('c-MET', 'Gene', '4233', (72, 77)) ('tumors', 'Disease', (285, 291)) ('Papillary renal neoplasms', 'Disease', (0, 25)) ('tumors', 'Disease', 'MESH:D009369', (285, 291)) ('PRCC', 'Gene', '5546', (163, 167)) ('tumors', 'Phenotype', 'HP:0002664', (285, 291)) ('renal neoplasms', 'Phenotype', 'HP:0009726', (10, 25)) ('c-MET', 'Gene', '4233', (359, 364)) ('PRCC', 'Gene', (163, 167)) 106443 32751108 Interestingly, a case of a family with HPRCC was reported with a novel germline missense mutation of c-MET with a histological pattern consisting in multiple adenomas and papillary renal cell carcinomas with focal clear cells and a mixture of type I and type II pattern. ('papillary renal cell carcinomas', 'Phenotype', 'HP:0006766', (171, 202)) ('c-MET', 'Gene', (101, 106)) ('papillary renal cell carcinomas', 'Disease', (171, 202)) ('PRCC', 'Gene', '5546', (40, 44)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (181, 202)) ('missense mutation', 'Var', (80, 97)) ('papillary renal cell carcinomas', 'Disease', 'MESH:C538614', (171, 202)) ('c-MET', 'Gene', '4233', (101, 106)) ('adenomas', 'Disease', 'MESH:D000236', (158, 166)) ('carcinomas', 'Phenotype', 'HP:0030731', (192, 202)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (181, 201)) ('PRCC', 'Gene', (40, 44)) ('carcinoma', 'Phenotype', 'HP:0030731', (192, 201)) ('adenomas', 'Disease', (158, 166)) 106445 32751108 Thus, foretinib, a pan-kinase inhibitor of MET, VEGFR2, RON, and AXL, was evaluated in patients with PRCC, showing 50% of partial responses among patients with HPRCC and 20% in PRCC patients with somatic c-MET mutations. ('MET', 'Gene', (43, 46)) ('mutations', 'Var', (210, 219)) ('patients', 'Species', '9606', (182, 190)) ('partial responses', 'MPA', (122, 139)) ('PRCC', 'Gene', '5546', (177, 181)) ('PRCC', 'Gene', (101, 105)) ('RON', 'Gene', (56, 59)) ('MET', 'Gene', (206, 209)) ('VEGFR2', 'Gene', (48, 54)) ('RON', 'Gene', '4486', (56, 59)) ('AXL', 'Gene', '558', (65, 68)) ('MET', 'Gene', '79811', (43, 46)) ('c-MET', 'Gene', '4233', (204, 209)) ('patients', 'Species', '9606', (146, 154)) ('VEGFR2', 'Gene', '3791', (48, 54)) ('c-MET', 'Gene', (204, 209)) ('PRCC', 'Gene', (161, 165)) ('PRCC', 'Gene', '5546', (101, 105)) ('foretinib', 'Chemical', 'MESH:C544831', (6, 15)) ('PRCC', 'Gene', (177, 181)) ('MET', 'Gene', '79811', (206, 209)) ('AXL', 'Gene', (65, 68)) ('patients', 'Species', '9606', (87, 95)) ('PRCC', 'Gene', '5546', (161, 165)) 106447 32751108 The majority of patients with this syndrome were found to have germline mutations in PTEN. ('PTEN', 'Gene', '5728', (85, 89)) ('germline mutations', 'Var', (63, 81)) ('patients', 'Species', '9606', (16, 24)) ('PTEN', 'Gene', (85, 89)) 106453 32751108 A recent study reported an atypical presentation of Cowden syndrome in a subject with heterozygous mutation C1003T in the PTEN gene, who developed four primary onset carcinomas (one melanoma, two CCRCC, and a follicular variant of papillary thyroid carcinoma). ('RCC', 'Disease', 'MESH:C538614', (198, 201)) ('carcinomas', 'Disease', (166, 176)) ('papillary thyroid carcinoma', 'Phenotype', 'HP:0002895', (231, 258)) ('carcinoma', 'Phenotype', 'HP:0030731', (166, 175)) ('papillary thyroid carcinoma', 'Disease', (231, 258)) ('papillary thyroid carcinoma', 'Disease', 'MESH:D000077273', (231, 258)) ('Cowden syndrome', 'Disease', 'MESH:D006223', (52, 67)) ('melanoma', 'Phenotype', 'HP:0002861', (182, 190)) ('PTEN', 'Gene', (122, 126)) ('melanoma', 'Disease', (182, 190)) ('carcinomas', 'Disease', 'MESH:D009369', (166, 176)) ('carcinomas', 'Phenotype', 'HP:0030731', (166, 176)) ('C1003T', 'Var', (108, 114)) ('PTEN', 'Gene', '5728', (122, 126)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (241, 258)) ('Cowden syndrome', 'Disease', (52, 67)) ('carcinoma', 'Phenotype', 'HP:0030731', (249, 258)) ('C1003T', 'SUBSTITUTION', 'None', (108, 114)) ('RCC', 'Disease', (198, 201)) ('melanoma', 'Disease', 'MESH:D008545', (182, 190)) 106454 32751108 Interestingly, the analysis of family's genetic background identified deleterious variants in two candidate modifier genes: CECAM1 and MIB2; CECAM1 is a tumor suppressor gene which presents loss of expression in RCC. ('variants', 'Var', (82, 90)) ('tumor', 'Disease', 'MESH:D009369', (153, 158)) ('MIB2', 'Gene', '142678', (135, 139)) ('loss', 'NegReg', (190, 194)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('tumor', 'Disease', (153, 158)) ('MIB2', 'Gene', (135, 139)) ('RCC', 'Disease', (212, 215)) ('expression', 'MPA', (198, 208)) ('RCC', 'Disease', 'MESH:C538614', (212, 215)) ('CECAM1', 'Gene', (124, 130)) ('CECAM1', 'Gene', (141, 147)) 106455 32751108 The BRCA1-associated protein1 (BAP1) syndrome is a tumor predisposition syndrome dependent on the presence of germline pathogenic variants at the level of the tumor suppressor gene BAP1 that predisposes to the development of various types of tumors including uveal melanoma, mesothelioma, cutaneous melanoma, and RCC. ('uveal melanoma', 'Phenotype', 'HP:0007716', (259, 273)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('predisposes to', 'Reg', (191, 205)) ('BRCA1-associated protein1', 'Gene', '8314', (4, 29)) ('tumor', 'Disease', (242, 247)) ('BRCA1-associated protein1', 'Gene', (4, 29)) ('BAP1', 'Gene', '8314', (181, 185)) ('melanoma', 'Disease', 'MESH:D008545', (265, 273)) ('RCC', 'Disease', (313, 316)) ('variants', 'Var', (130, 138)) ('men', 'Species', '9606', (217, 220)) ('BAP1', 'Gene', '8314', (31, 35)) ('tumor', 'Disease', 'MESH:D009369', (242, 247)) ('tumor', 'Disease', (51, 56)) ('melanoma', 'Phenotype', 'HP:0002861', (299, 307)) ('melanoma', 'Disease', (299, 307)) ('tumors', 'Phenotype', 'HP:0002664', (242, 248)) ('tumor', 'Disease', 'MESH:D009369', (51, 56)) ('RCC', 'Disease', 'MESH:C538614', (313, 316)) ('BAP1', 'Gene', (181, 185)) ('tumor', 'Phenotype', 'HP:0002664', (242, 247)) ('tumor', 'Disease', (159, 164)) ('BAP1', 'Gene', (31, 35)) ('melanoma', 'Phenotype', 'HP:0002861', (265, 273)) ('melanoma', 'Disease', (265, 273)) ('tumors', 'Disease', (242, 248)) ('tumor', 'Disease', 'MESH:D009369', (159, 164)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('mesothelioma', 'Disease', (275, 287)) ('cutaneous melanoma', 'Disease', (289, 307)) ('cutaneous melanoma', 'Phenotype', 'HP:0012056', (289, 307)) ('cutaneous melanoma', 'Disease', 'MESH:C562393', (289, 307)) ('mesothelioma', 'Disease', 'MESH:D008654', (275, 287)) ('tumors', 'Disease', 'MESH:D009369', (242, 248)) ('melanoma', 'Disease', 'MESH:D008545', (299, 307)) 106460 32751108 The three most frequently observed missense mutations in these patients are H94R, L100P, and T173C. ('T173C', 'SUBSTITUTION', 'None', (93, 98)) ('L100P', 'Var', (82, 87)) ('L100P', 'SUBSTITUTION', 'None', (82, 87)) ('H94R', 'SUBSTITUTION', 'None', (76, 80)) ('T173C', 'Var', (93, 98)) ('patients', 'Species', '9606', (63, 71)) ('H94R', 'Var', (76, 80)) 106461 32751108 identified in a family prone to RCC a germline mutation of BAP1 gene (277A>G; Thr93Ala); furthermore, these authors screened 11 families that included individuals carrying germline deleterious BAP1 mutations and 6 of these families presented with RCC-affected individuals. ('277A>G', 'SUBSTITUTION', 'None', (70, 76)) ('BAP1', 'Gene', (59, 63)) ('BAP1', 'Gene', '8314', (59, 63)) ('BAP1', 'Gene', '8314', (193, 197)) ('RCC', 'Disease', 'MESH:C538614', (32, 35)) ('RCC', 'Disease', (32, 35)) ('mutations', 'Var', (198, 207)) ('277A>G', 'Var', (70, 76)) ('BAP1', 'Gene', (193, 197)) ('Thr93Ala', 'Chemical', '-', (78, 86)) ('RCC', 'Disease', 'MESH:C538614', (247, 250)) ('RCC', 'Disease', (247, 250)) 106462 32751108 reported a family with a BAP1 germline variant (41T>A; L14H), disrupting a highly conserved residue in the catalytic domain: 22% of the individuals of this family display RCC, mostly multifocal and of the clear cell type. ('L14H', 'SUBSTITUTION', 'None', (55, 59)) ('BAP1', 'Gene', (25, 29)) ('L14H', 'Var', (55, 59)) ('41T>A', 'SUBSTITUTION', 'None', (48, 53)) ('RCC', 'Disease', (171, 174)) ('variant', 'Var', (39, 46)) ('41T>A', 'Var', (48, 53)) ('disrupting', 'NegReg', (62, 72)) ('RCC', 'Disease', 'MESH:C538614', (171, 174)) ('highly conserved residue in the catalytic domain', 'MPA', (75, 123)) ('BAP1', 'Gene', '8314', (25, 29)) 106465 32751108 Germline mutations of the genes encoding the SDH subunits result in hereditary syndromes associated with the development of paraganglioma-pheochromocytoma, gastrointestinal stromal tumors, and RCC. ('Germline mutations', 'Var', (0, 18)) ('associated', 'Reg', (89, 99)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (138, 154)) ('RCC', 'Disease', (193, 196)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) ('hereditary syndromes', 'Disease', 'MESH:D061325', (68, 88)) ('tumors', 'Phenotype', 'HP:0002664', (181, 187)) ('RCC', 'Disease', 'MESH:C538614', (193, 196)) ('paraganglioma', 'Phenotype', 'HP:0002668', (124, 137)) ('paraganglioma-pheochromocytoma', 'Disease', (124, 154)) ('SDH', 'Gene', (45, 48)) ('gastrointestinal stromal tumors', 'Disease', (156, 187)) ('paraganglioma-pheochromocytoma', 'Disease', 'MESH:D010673', (124, 154)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (156, 187)) ('result in', 'Reg', (58, 67)) ('men', 'Species', '9606', (116, 119)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (156, 187)) ('hereditary syndromes', 'Disease', (68, 88)) 106467 32751108 Most of the renal tumors developing in individuals with SDH deficiency, particularly those associated with germline SDHB mutations, exhibit a distinctive morphology consisting in tumors composed by cuboidal cells with bubbly eosinophilic cytoplasm, arranged in solid nests or in tubules surrounding central spaces. ('tumor', 'Phenotype', 'HP:0002664', (179, 184)) ('mutations', 'Var', (121, 130)) ('renal tumors', 'Disease', (12, 24)) ('tumors', 'Disease', (179, 185)) ('tumors', 'Phenotype', 'HP:0002664', (179, 185)) ('renal tumor', 'Phenotype', 'HP:0009726', (12, 23)) ('tumors', 'Disease', 'MESH:D009369', (179, 185)) ('tumors', 'Disease', (18, 24)) ('tumors', 'Disease', 'MESH:D009369', (18, 24)) ('SDHB', 'Gene', (116, 120)) ('SDH deficiency', 'Disease', (56, 70)) ('tumors', 'Phenotype', 'HP:0002664', (18, 24)) ('renal tumors', 'Phenotype', 'HP:0009726', (12, 24)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) ('SDH deficiency', 'Disease', 'MESH:D007153', (56, 70)) ('renal tumors', 'Disease', 'MESH:D007674', (12, 24)) 106468 32751108 have reported SDH-deficient renal carcinomas from 27 patients and estimated that 0.05%-0.2% of all carcinomas are SDH deficient; 94% of these tumors displayed the typical morphology of SDH-deficient renal cancers; all the patients performing a genetic evaluation displayed germline SDHB mutations (only in one patient SDHA mutations were detected); a part of these patients had a metastatic disease, associated with high-grade nuclear atypia or coagulative necrosis. ('patients', 'Species', '9606', (365, 373)) ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('SDH-deficient renal cancers', 'Disease', 'MESH:D007680', (185, 212)) ('patients', 'Species', '9606', (222, 230)) ('mutations', 'Var', (287, 296)) ('coagulative necrosis', 'Disease', (445, 465)) ('tumors', 'Phenotype', 'HP:0002664', (142, 148)) ('SDHA', 'Gene', (318, 322)) ('renal carcinomas', 'Phenotype', 'HP:0005584', (28, 44)) ('patients', 'Species', '9606', (53, 61)) ('SDH-deficient renal carcinomas', 'Disease', 'MESH:C538614', (14, 44)) ('SDHA', 'Gene', '6389', (318, 322)) ('tumors', 'Disease', (142, 148)) ('patient', 'Species', '9606', (310, 317)) ('carcinomas', 'Disease', (34, 44)) ('patient', 'Species', '9606', (365, 372)) ('carcinomas', 'Disease', (99, 109)) ('patient', 'Species', '9606', (53, 60)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (28, 43)) ('cancers', 'Phenotype', 'HP:0002664', (205, 212)) ('patient', 'Species', '9606', (222, 229)) ('metastatic disease', 'Disease', (380, 398)) ('carcinomas', 'Phenotype', 'HP:0030731', (34, 44)) ('tumors', 'Disease', 'MESH:D009369', (142, 148)) ('cancer', 'Phenotype', 'HP:0002664', (205, 211)) ('SDHB', 'Gene', (282, 286)) ('coagulative necrosis', 'Disease', 'MESH:D001778', (445, 465)) ('SDH-deficient renal carcinomas', 'Disease', (14, 44)) ('renal cancer', 'Phenotype', 'HP:0009726', (199, 211)) ('coagulative necrosis', 'Phenotype', 'HP:0010885', (445, 465)) ('carcinomas', 'Disease', 'MESH:D009369', (34, 44)) ('carcinoma', 'Phenotype', 'HP:0030731', (99, 108)) ('carcinomas', 'Disease', 'MESH:D009369', (99, 109)) ('carcinomas', 'Phenotype', 'HP:0030731', (99, 109)) ('carcinoma', 'Phenotype', 'HP:0030731', (34, 43)) ('SDH-deficient renal cancers', 'Disease', (185, 212)) 106469 32751108 reported the characterization of 11 SDH-deficient RCC and observed the common presence of intratumoral mast cells; the majority of patients with SDHB gene mutations exhibited also loss of the second allele. ('patients', 'Species', '9606', (131, 139)) ('mutations', 'Var', (155, 164)) ('SDHB', 'Gene', (145, 149)) ('SDH-deficient RCC', 'Disease', (36, 53)) ('tumor', 'Disease', 'MESH:D009369', (95, 100)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('SDH-deficient RCC', 'Disease', 'MESH:C538614', (36, 53)) ('tumor', 'Disease', (95, 100)) 106472 32751108 In some rare patients, SDH mutations may co-occur with Xp11 translocation RCC, characterized by TFE3 chromosomal translocations involving break points in the TFE3 gene; renal cell carcinomas with translocations make part of MiT family translocation renal cell carcinoma and are composed by eosinophilic cells, with cytoplasmic inclusions and prominent nucleoli. ('mutations', 'Var', (27, 36)) ('patients', 'Species', '9606', (13, 21)) ('TFE3', 'Gene', (96, 100)) ('TFE3', 'Gene', '7030', (96, 100)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (169, 189)) ('renal cell carcinoma', 'Disease', (249, 269)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (249, 269)) ('RCC', 'Disease', (74, 77)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (169, 190)) ('carcinoma', 'Phenotype', 'HP:0030731', (180, 189)) ('carcinomas', 'Phenotype', 'HP:0030731', (180, 190)) ('renal cell carcinomas', 'Disease', (169, 190)) ('TFE3', 'Gene', (158, 162)) ('RCC', 'Disease', 'MESH:C538614', (74, 77)) ('carcinoma', 'Phenotype', 'HP:0030731', (260, 269)) ('translocations', 'Var', (196, 210)) ('TFE3', 'Gene', '7030', (158, 162)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (169, 190)) ('SDH', 'Gene', (23, 26)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (169, 189)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (249, 269)) 106475 32751108 The most commonly mutated gene was SDHB (with 137G>A being the most frequent mutation) and less frequently SDHC (380A>G being the most frequent mutation) and SDHA. ('380A>G', 'SUBSTITUTION', 'None', (113, 119)) ('SDHA', 'Gene', (158, 162)) ('137G>A', 'Var', (46, 52)) ('SDHB', 'Gene', (35, 39)) ('SDHC', 'Gene', (107, 111)) ('SDHC', 'Gene', '6391', (107, 111)) ('SDHA', 'Gene', '6389', (158, 162)) ('137G>A', 'SUBSTITUTION', 'None', (46, 52)) ('380A>G', 'Var', (113, 119)) 106476 32751108 Rare cases of SDH-deficient renal cell cancers are related to alterations of the SDHA gene: Yakirevich et al. ('SDHA', 'Gene', (81, 85)) ('SDH-deficient renal cell cancers', 'Disease', (14, 46)) ('cancers', 'Phenotype', 'HP:0002664', (39, 46)) ('SDH-deficient renal cell cancers', 'Disease', 'MESH:C538614', (14, 46)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (28, 45)) ('cancer', 'Phenotype', 'HP:0002664', (39, 45)) ('SDHA', 'Gene', '6389', (81, 85)) ('related', 'Reg', (51, 58)) ('alterations', 'Var', (62, 73)) 106477 32751108 reported a case of SDH-deficiency RCC, characterized by homozygous deletion of the SDHA gene (9 of the SDHA gene exons were deleted): at immunohistochemical level, the expression of both SDHA and SDHB was lost. ('SDH-deficiency RCC', 'Disease', (19, 37)) ('SDHA', 'Gene', '6389', (83, 87)) ('SDHA', 'Gene', '6389', (187, 191)) ('SDH-deficiency RCC', 'Disease', 'MESH:C538614', (19, 37)) ('expression', 'MPA', (168, 178)) ('deletion', 'Var', (67, 75)) ('SDHA', 'Gene', (83, 87)) ('SDHA', 'Gene', (103, 107)) ('SDHA', 'Gene', (187, 191)) ('lost', 'NegReg', (205, 209)) ('SDHB', 'Gene', (196, 200)) ('SDHA', 'Gene', '6389', (103, 107)) 106478 32751108 The characterization of an SDHB-deficient RCC cell line isolated from young patient carrying the SDHBR46Q mutation was used as a tool to elucidate the alterations of metabolism caused by SDH deficiency. ('SDH deficiency', 'Disease', (187, 201)) ('SDH deficiency', 'Disease', 'MESH:D007153', (187, 201)) ('mutation', 'Var', (106, 114)) ('SDHBR46Q', 'Gene', (97, 105)) ('SDHB-deficient RCC', 'Disease', 'MESH:C538614', (27, 45)) ('patient', 'Species', '9606', (76, 83)) ('SDHB-deficient RCC', 'Disease', (27, 45)) 106480 32751108 The SDH function and molecular organization require two conserved L(I)YR motifs present in SDHB; the SDHBR46Q mutation impairs one of these two L(I)YR motifs, by changing IYR to IYQ and thus determining an incapacity of SDHB to incorporate Fe-S cluster, with its consequent unstability. ('incapacity', 'NegReg', (206, 216)) ('changing', 'Reg', (162, 170)) ('impairs', 'NegReg', (119, 126)) ('IYR', 'MPA', (171, 174)) ('mutation', 'Var', (110, 118)) ('SDHBR46Q', 'Gene', (101, 109)) ('incorporate', 'MPA', (228, 239)) ('Fe-S', 'Chemical', '-', (240, 244)) 106482 32751108 As a consequence of SDHB degradation, SDHB-mutant cells displayed markedly decreased oxygen consumption, increased succinate levels, and pronounced use of glutamine as the main source of TCA cycle metabolites via reductive carboxylation (reduction of glutamine-derived alpha-ketoglutarate into citrate). ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (269, 288)) ('glutamine', 'Chemical', 'MESH:D005973', (251, 260)) ('succinate', 'Chemical', 'MESH:D019802', (115, 124)) ('oxygen', 'Chemical', 'MESH:D010100', (85, 91)) ('glutamine', 'Chemical', 'MESH:D005973', (155, 164)) ('degradation', 'Var', (25, 36)) ('succinate levels', 'MPA', (115, 131)) ('oxygen consumption', 'MPA', (85, 103)) ('reductive carboxylation', 'MPA', (213, 236)) ('increased', 'PosReg', (105, 114)) ('SDHB-mutant', 'Gene', (38, 49)) ('citrate', 'Chemical', 'MESH:D019343', (294, 301)) ('TCA', 'Chemical', 'MESH:D014238', (187, 190)) ('increased succinate levels', 'Phenotype', 'HP:0020149', (105, 131)) ('SDHB', 'Gene', (20, 24)) ('decreased', 'NegReg', (75, 84)) 106484 32751108 Through the study of SDHB-ablated kidney mouse cells it was shown that lack of SDH activity induces the commitment of the cells to consume extracellular pyruvate, inducing Warburg-like bioenergetic features; pyruvate carboxylation shifts glucose-derived carbons into aspartate biosynthesis and, through this mechanism, sustains tumor cell growth. ('ablated kidney', 'Phenotype', 'HP:0000104', (26, 40)) ('glucose', 'Chemical', 'MESH:D005947', (238, 245)) ('lack', 'Var', (71, 75)) ('aspartate', 'Chemical', 'MESH:D001224', (267, 276)) ('mouse', 'Species', '10090', (41, 46)) ('carbons', 'Chemical', 'MESH:D002244', (254, 261)) ('men', 'Species', '9606', (110, 113)) ('pyruvate', 'Chemical', 'MESH:D019289', (208, 216)) ('tumor', 'Disease', 'MESH:D009369', (328, 333)) ('sustains', 'PosReg', (319, 327)) ('SDH', 'Gene', (79, 82)) ('inducing', 'Reg', (163, 171)) ('tumor', 'Phenotype', 'HP:0002664', (328, 333)) ('Warburg-like bioenergetic features', 'MPA', (172, 206)) ('pyruvate', 'Chemical', 'MESH:D019289', (153, 161)) ('tumor', 'Disease', (328, 333)) ('glucose-derived carbons', 'MPA', (238, 261)) 106485 32751108 SDH inactivation leads to a massive accumulation of succinate, acting as an oncometabolite. ('inactivation', 'Var', (4, 16)) ('SDH', 'Gene', (0, 3)) ('succinate', 'MPA', (52, 61)) ('accumulation', 'PosReg', (36, 48)) ('succinate', 'Chemical', 'MESH:D019802', (52, 61)) 106488 32751108 A pulsed proton magnetic resonance spectroscopy (1)H-MRS sequence was developed, optimized, and applied to imaging of patients with paraganglioma: a succinate peak was detected at 2.44 ppm in all paraganglioma patients carrying an SDHx gene mutation, but not in patients exempt of SDHx mutation. ('SDHx', 'Gene', (231, 235)) ('paraganglioma', 'Disease', 'MESH:D010235', (196, 209)) ('paraganglioma', 'Disease', (132, 145)) ('S', 'Chemical', 'MESH:D013455', (55, 56)) ('succinate', 'Chemical', 'MESH:D019802', (149, 158)) ('S', 'Chemical', 'MESH:D013455', (231, 232)) ('paraganglioma', 'Phenotype', 'HP:0002668', (132, 145)) ('paraganglioma', 'Disease', 'MESH:D010235', (132, 145)) ('paraganglioma', 'Phenotype', 'HP:0002668', (196, 209)) ('paraganglioma', 'Disease', (196, 209)) ('mutation', 'Var', (241, 249)) ('patients', 'Species', '9606', (210, 218)) ('S', 'Chemical', 'MESH:D013455', (281, 282)) ('patients', 'Species', '9606', (262, 270)) ('patients', 'Species', '9606', (118, 126)) 106490 32751108 Succinate accumulated in individuals with germline SDHx mutations acts as an oncometabolite and is responsible at a large extent for the oncogenic effect mediated by SDH mutational deficiency. ('deficiency', 'Disease', (181, 191)) ('mutations', 'Var', (56, 65)) ('deficiency', 'Disease', 'MESH:D007153', (181, 191)) ('Succinate', 'Chemical', 'MESH:D019802', (0, 9)) ('mutational', 'Var', (170, 180)) ('oncometabolite', 'MPA', (77, 91)) ('SDHx', 'Gene', (51, 55)) ('SDH', 'Gene', (166, 169)) 106496 32751108 Germline mutations in FH predispose to dominantly inherited uterine fibroids, skin leiomyomata, and aggressive papillary renal cancer; according to these observations, it was proposed that FH acts as a tumor suppressor. ('Germline mutations', 'Var', (0, 18)) ('FH', 'Gene', '2271', (22, 24)) ('aggressive papillary renal cancer', 'Disease', (100, 133)) ('skin leiomyomata', 'Disease', (78, 94)) ('FH', 'Gene', '2271', (189, 191)) ('tumor', 'Disease', (202, 207)) ('skin leiomyomata', 'Phenotype', 'HP:0007620', (78, 94)) ('tumor', 'Disease', 'MESH:D009369', (202, 207)) ('dominantly inherited uterine fibroids', 'Disease', (39, 76)) ('predispose', 'Reg', (25, 35)) ('cancer', 'Phenotype', 'HP:0002664', (127, 133)) ('aggressive papillary renal cancer', 'Disease', 'MESH:D007680', (100, 133)) ('FH acts', 'Disease', 'MESH:D006938', (189, 196)) ('uterine fibroids', 'Phenotype', 'HP:0000131', (60, 76)) ('renal cancer', 'Phenotype', 'HP:0009726', (121, 133)) ('tumor', 'Phenotype', 'HP:0002664', (202, 207)) ('skin leiomyomata', 'Disease', 'MESH:C535516', (78, 94)) ('papillary renal cancer', 'Phenotype', 'HP:0006766', (111, 133)) ('FH acts', 'Disease', (189, 196)) 106499 32751108 have investigated 13 patients with FH-deficient renal cancers and observed absent expression in 12/13 cases, germline FH mutations in seven cases, and somatic mutations of FH gene in the remaining four cases. ('FH-deficient renal cancers', 'Disease', 'MESH:D007680', (35, 61)) ('FH', 'Gene', '2271', (35, 37)) ('mutations', 'Var', (121, 130)) ('cancers', 'Phenotype', 'HP:0002664', (54, 61)) ('expression', 'MPA', (82, 92)) ('FH-deficient renal cancers', 'Disease', (35, 61)) ('FH', 'Gene', '2271', (118, 120)) ('patients', 'Species', '9606', (21, 29)) ('renal cancer', 'Phenotype', 'HP:0009726', (48, 60)) ('absent', 'NegReg', (75, 81)) ('cancer', 'Phenotype', 'HP:0002664', (54, 60)) ('FH', 'Gene', '2271', (172, 174)) 106503 32751108 These four cases were FH-negative and 2SC-positive at immunohistochemical level and in 3/4 cases harbored germline FH mutations and in 1/4 somatic FH mutations. ('FH', 'Gene', '2271', (147, 149)) ('mutations', 'Var', (118, 127)) ('FH', 'Gene', '2271', (115, 117)) ('S', 'Chemical', 'MESH:D013455', (39, 40)) ('FH', 'Gene', '2271', (22, 24)) ('harbored', 'Reg', (97, 105)) 106504 32751108 Germline FH mutations are observed in about 90% of families with HLRCC. ('RCC', 'Disease', 'MESH:C538614', (67, 70)) ('FH', 'Gene', '2271', (9, 11)) ('RCC', 'Disease', (67, 70)) ('mutations', 'Var', (12, 21)) 106506 32751108 In cases positive for FH mutations, the most frequent mutations located along the entire length of the coding region were represented by missense and frameshifts, and more rarely, by non-sense and splice site mutations. ('frameshifts', 'Var', (150, 161)) ('FH', 'Gene', '2271', (22, 24)) ('mutations', 'Var', (25, 34)) ('missense', 'Var', (137, 145)) 106507 32751108 In a large series of HLRCC patients, 68 different germline mutations of the FHG gene were identified: 18 truncating or frameshift mutations, 37 missense mutations, 9 splice-site, and 4 large deletions. ('missense mutations', 'Var', (144, 162)) ('FH', 'Gene', '2271', (76, 78)) ('truncating', 'MPA', (105, 115)) ('splice-site', 'Var', (166, 177)) ('patients', 'Species', '9606', (27, 35)) ('RCC', 'Disease', (23, 26)) ('RCC', 'Disease', 'MESH:C538614', (23, 26)) ('frameshift mutations', 'Var', (119, 139)) 106508 32751108 have explored the occurrence of FH gene mutations in a group of patients with phenotypic manifestations consistent with HLRCC reporting in the 13 families explored, 11 complete FH gene deletions, and 2 partial FH gene deletion; kidney cancer was diagnosed in 32% of these patients and in 54% of families possessing either complete or partial FH deletions. ('diagnosed', 'Reg', (246, 255)) ('FH', 'Gene', '2271', (210, 212)) ('patients', 'Species', '9606', (64, 72)) ('deletions', 'Var', (185, 194)) ('kidney cancer', 'Disease', 'MESH:D007680', (228, 241)) ('mutations', 'Var', (40, 49)) ('FH', 'Gene', '2271', (177, 179)) ('kidney cancer', 'Phenotype', 'HP:0009726', (228, 241)) ('patients', 'Species', '9606', (272, 280)) ('FH', 'Gene', '2271', (32, 34)) ('FH', 'Gene', '2271', (342, 344)) ('RCC', 'Disease', 'MESH:C538614', (122, 125)) ('cancer', 'Phenotype', 'HP:0002664', (235, 241)) ('RCC', 'Disease', (122, 125)) ('kidney cancer', 'Disease', (228, 241)) 106509 32751108 These observations clearly indicate that FH gene deletions, as well as gene mutations are associated with the development of RCCs. ('mutations', 'Var', (76, 85)) ('FH', 'Gene', '2271', (41, 43)) ('RCC', 'Disease', 'MESH:C538614', (125, 128)) ('RCC', 'Disease', (125, 128)) ('men', 'Species', '9606', (117, 120)) ('associated', 'Reg', (90, 100)) ('deletions', 'Var', (49, 58)) 106523 32751108 The glycolytic shift induced by fumarate deficiency induced several consequences at the level of the AMP-activated pathway (AMPK): (i) AMPK levels were decreased with consequent lowered expression of the iron transported DNMT1; (ii) in turn, reduced DNMT1 levels induced a condition of cytosolic iron deficiency, activating the iron regulatory proteins, IRP1 and IRP2, and increasing the expression of HIF-1alpha; (iii) activation of AMPK or silencing of HIF-1alpha decreases the invasive properties of FH-deficient renal cancer cells. ('AMPK', 'Gene', (434, 438)) ('DNMT1', 'Gene', (221, 226)) ('increasing', 'PosReg', (373, 383)) ('DNMT1', 'Gene', '1786', (250, 255)) ('decreases', 'NegReg', (466, 475)) ('AMPK', 'Gene', '5562', (135, 139)) ('iron deficiency', 'Disease', 'MESH:C562385', (296, 311)) ('HIF-1alpha', 'Gene', (402, 412)) ('HIF-1alpha', 'Gene', '3091', (455, 465)) ('IRP2', 'Gene', (363, 367)) ('deficiency', 'Disease', 'MESH:D007153', (41, 51)) ('silencing', 'Var', (442, 451)) ('iron deficiency', 'Disease', (296, 311)) ('IRP2', 'Gene', '3658', (363, 367)) ('FH-deficient renal cancer', 'Disease', 'MESH:D007680', (503, 528)) ('iron', 'Chemical', 'MESH:D007501', (204, 208)) ('AMPK', 'Gene', '5562', (124, 128)) ('deficiency', 'Disease', 'MESH:D007153', (301, 311)) ('AMPK', 'Gene', '5562', (434, 438)) ('cancer', 'Phenotype', 'HP:0002664', (522, 528)) ('deficiency', 'Disease', (41, 51)) ('expression', 'MPA', (388, 398)) ('DNMT1', 'Gene', '1786', (221, 226)) ('DNMT1', 'Gene', (250, 255)) ('FH-deficient renal cancer', 'Disease', (503, 528)) ('HIF-1alpha', 'Gene', (455, 465)) ('deficiency', 'Disease', (301, 311)) ('iron', 'Chemical', 'MESH:D007501', (328, 332)) ('AMPK', 'Gene', (135, 139)) ('IRP1', 'Gene', (354, 358)) ('iron', 'Chemical', 'MESH:D007501', (296, 300)) ('IRP1', 'Gene', '48', (354, 358)) ('renal cancer', 'Phenotype', 'HP:0009726', (516, 528)) ('HIF-1alpha', 'Gene', '3091', (402, 412)) ('activating', 'PosReg', (313, 323)) ('fumarate', 'Chemical', 'MESH:D005650', (32, 40)) ('AMPK', 'Gene', (124, 128)) 106533 32751108 Through the study of numerous families inheriting the mutated gene responsible for BHD syndrome it is estimated an increased risk of developing RCC for BHD-affected family members of about 7-fold in comparison with unaffected individuals. ('RCC', 'Disease', 'MESH:C538614', (144, 147)) ('BHD', 'Disease', 'MESH:C564185', (152, 155)) ('BHD syndrome', 'Disease', 'MESH:C564185', (83, 95)) ('BHD', 'Disease', (83, 86)) ('mutated gene', 'Var', (54, 66)) ('BHD', 'Disease', (152, 155)) ('RCC', 'Disease', (144, 147)) ('BHD syndrome', 'Disease', (83, 95)) ('BHD', 'Disease', 'MESH:C564185', (83, 86)) 106539 32751108 The majority of FLCN mutations identified in the germline of BHD patients are frameshift mutations (insertion/deletion), nonsense mutations that are predicted to truncate and to inactivate the FLCN protein. ('BHD', 'Disease', (61, 64)) ('BHD', 'Disease', 'MESH:C564185', (61, 64)) ('inactivate', 'NegReg', (178, 188)) ('frameshift mutations', 'Var', (78, 98)) ('FLCN protein', 'Protein', (193, 205)) ('patients', 'Species', '9606', (65, 73)) ('FLCN', 'Gene', (16, 20)) ('protein', 'Protein', (198, 205)) ('mutations', 'Var', (21, 30)) 106541 32751108 These conclusions were supported by a study carried out by Vocke and coworkers on 77 renal tumors derived from 12 patients with germline FLCN mutations to identify somatic mutations in the second copy of BHD, showing FLCN somatic mutations in 53% of cases and loss-of-heterozygosity at the BHD locus in 17% of cases. ('tumors', 'Phenotype', 'HP:0002664', (91, 97)) ('mutations', 'Var', (172, 181)) ('mutations', 'Var', (142, 151)) ('BHD', 'Disease', (290, 293)) ('renal tumors', 'Phenotype', 'HP:0009726', (85, 97)) ('BHD', 'Disease', 'MESH:C564185', (290, 293)) ('BHD', 'Disease', 'MESH:C564185', (204, 207)) ('renal tumors', 'Disease', (85, 97)) ('renal tumors', 'Disease', 'MESH:D007674', (85, 97)) ('mutations', 'Var', (230, 239)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('FLCN', 'Gene', (137, 141)) ('loss-of-heterozygosity', 'NegReg', (260, 282)) ('patients', 'Species', '9606', (114, 122)) ('BHD', 'Disease', (204, 207)) ('renal tumor', 'Phenotype', 'HP:0009726', (85, 96)) 106543 32751108 The study of some germline missense mutations in the folliculin gene, such as H255Y and K508R, observed in BHD patients with renal carcinomas has directly supported their pathogenic role: the FLCN H255Y mutant protein displayed a loss of its tumor suppressive function inducing kidney cell proliferation and the clinical manifestations of BHD, the FLCN K508R mutant protein exerted a dominant negative effect on the function of WT FLCN in the regulation of kidney cell proliferation. ('clinical manifestations', 'CPA', (312, 335)) ('renal carcinomas', 'Disease', (125, 141)) ('H255Y', 'SUBSTITUTION', 'None', (197, 202)) ('renal carcinomas', 'Phenotype', 'HP:0005584', (125, 141)) ('K508R', 'Var', (353, 358)) ('tumor', 'Disease', (242, 247)) ('folliculin', 'Gene', (53, 63)) ('K508R', 'Var', (88, 93)) ('tumor', 'Disease', 'MESH:D009369', (242, 247)) ('BHD', 'Disease', 'MESH:C564185', (339, 342)) ('H255Y', 'Var', (78, 83)) ('folliculin', 'Gene', '201163', (53, 63)) ('K508R', 'SUBSTITUTION', 'None', (353, 358)) ('FLCN', 'Gene', (348, 352)) ('negative', 'NegReg', (393, 401)) ('BHD', 'Disease', (339, 342)) ('H255Y', 'Var', (197, 202)) ('K508R', 'SUBSTITUTION', 'None', (88, 93)) ('tumor', 'Phenotype', 'HP:0002664', (242, 247)) ('renal carcinomas', 'Disease', 'MESH:C538614', (125, 141)) ('BHD', 'Disease', 'MESH:C564185', (107, 110)) ('loss', 'NegReg', (230, 234)) ('carcinoma', 'Phenotype', 'HP:0030731', (131, 140)) ('carcinomas', 'Phenotype', 'HP:0030731', (131, 141)) ('H255Y', 'SUBSTITUTION', 'None', (78, 83)) ('BHD', 'Disease', (107, 110)) ('kidney cell proliferation', 'CPA', (278, 303)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (125, 140)) ('patients', 'Species', '9606', (111, 119)) 106547 32751108 All patients displayed FLCN germline mutations; somatic FLCN mutations were observed in 25 out of the 29 kidney tumors: 20 tumors displayed frameshift/nonsense mutations or loss of heterozygosity at the level of the allele not affected by the germline mutation. ('kidney tumors', 'Phenotype', 'HP:0009726', (105, 118)) ('tumors', 'Disease', (123, 129)) ('tumors', 'Disease', 'MESH:D009369', (123, 129)) ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('kidney tumor', 'Phenotype', 'HP:0009726', (105, 117)) ('FLCN', 'Gene', (56, 60)) ('loss of', 'NegReg', (173, 180)) ('mutations', 'Var', (61, 70)) ('tumors', 'Phenotype', 'HP:0002664', (112, 118)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('kidney tumors', 'Disease', (105, 118)) ('patients', 'Species', '9606', (4, 12)) ('tumors', 'Disease', 'MESH:D009369', (112, 118)) ('kidney tumors', 'Disease', 'MESH:D007680', (105, 118)) ('frameshift/nonsense mutations', 'Var', (140, 169)) ('tumors', 'Disease', (112, 118)) 106549 32751108 The number of somatic variants was similar in the various histological subtypes of BHD-associated kidney tumors; the frequency of gene mutations was usually low in these tumors, with variants in chromatin remodeling genes being frequently observed (59% of cases); furthermore, variants in genes associated with the mitochondrial pathway, lipid metabolism, and glycolytic pathway were observed in 28%, 24%, and 7% of cases, respectively. ('tumors', 'Disease', (105, 111)) ('variants', 'Var', (277, 285)) ('BHD-associated kidney tumors', 'Disease', 'MESH:C564185', (83, 111)) ('tumors', 'Disease', 'MESH:D009369', (105, 111)) ('kidney tumors', 'Phenotype', 'HP:0009726', (98, 111)) ('kidney tumor', 'Phenotype', 'HP:0009726', (98, 110)) ('tumor', 'Phenotype', 'HP:0002664', (170, 175)) ('low', 'NegReg', (157, 160)) ('tumors', 'Disease', 'MESH:D009369', (170, 176)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('observed', 'Reg', (384, 392)) ('lipid', 'Chemical', 'MESH:D008055', (338, 343)) ('tumors', 'Phenotype', 'HP:0002664', (170, 176)) ('tumors', 'Phenotype', 'HP:0002664', (105, 111)) ('tumors', 'Disease', (170, 176)) ('BHD-associated kidney tumors', 'Disease', (83, 111)) 106551 32751108 It is of interest to note that at molecular level BHD-related hybrid oncocytic/chromophobe tumors can be differentiated from the sporadic counterpart of these tumors in that these last tumors have copy number losses in chromosomes 1 and XY, but lacks recurrent mutations. ('tumors', 'Disease', (91, 97)) ('tumors', 'Disease', 'MESH:D009369', (91, 97)) ('tumors', 'Phenotype', 'HP:0002664', (91, 97)) ('BHD', 'Disease', 'MESH:C564185', (50, 53)) ('copy number losses', 'Var', (197, 215)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('tumors', 'Disease', (185, 191)) ('tumors', 'Phenotype', 'HP:0002664', (185, 191)) ('tumors', 'Disease', (159, 165)) ('tumors', 'Phenotype', 'HP:0002664', (159, 165)) ('tumors', 'Disease', 'MESH:D009369', (185, 191)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('chromophobe tumors', 'Disease', (79, 97)) ('tumors', 'Disease', 'MESH:D009369', (159, 165)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('BHD', 'Disease', (50, 53)) ('chromophobe tumors', 'Disease', 'MESH:D000238', (79, 97)) 106553 32751108 The protein folliculin is involved in numerous biological processes, such as membrane trafficking, energy and nutrient homeostasis, and lysosomal biogenesis, and the mutations affecting this protein generate different phenotypes, in relation with their cellular context. ('folliculin', 'Gene', '201163', (12, 22)) ('mutations', 'Var', (166, 175)) ('folliculin', 'Gene', (12, 22)) 106557 32751108 Thus, functional studies have shown that FNIP1 and FNIP2 act as tumor suppressors since mice deficient in FNIP1 and FNIP2 tumors display tumors developing at the level of several organs. ('tumors', 'Phenotype', 'HP:0002664', (122, 128)) ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) ('tumors', 'Phenotype', 'HP:0002664', (137, 143)) ('tumor', 'Disease', (64, 69)) ('tumor', 'Disease', (137, 142)) ('tumor', 'Disease', 'MESH:D009369', (137, 142)) ('tumors display tumors', 'Disease', 'MESH:D009369', (122, 143)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) ('FNIP2', 'Gene', (116, 121)) ('tumor', 'Disease', 'MESH:D009369', (122, 127)) ('tumor', 'Phenotype', 'HP:0002664', (122, 127)) ('FNIP1', 'Gene', (106, 111)) ('deficient', 'Var', (93, 102)) ('tumor', 'Disease', 'MESH:D009369', (64, 69)) ('mice', 'Species', '10090', (88, 92)) ('tumor', 'Disease', (122, 127)) ('tumors display tumors', 'Disease', (122, 143)) 106561 32751108 Studies in mice with the kidney-targeted FLCN inactivation develop polycystic kidneys and cystic tumors, exhibiting activation of mTORC1. ('cystic tumors', 'Disease', (90, 103)) ('FLCN', 'Gene', (41, 45)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('cystic tumors', 'Disease', 'MESH:D052177', (90, 103)) ('mTORC1', 'Gene', (130, 136)) ('polycystic kidneys', 'Disease', 'MESH:D007690', (67, 85)) ('develop', 'Reg', (59, 66)) ('mice', 'Species', '10090', (11, 15)) ('tumors', 'Phenotype', 'HP:0002664', (97, 103)) ('inactivation', 'Var', (46, 58)) ('mTORC1', 'Gene', '382056', (130, 136)) ('polycystic kidneys', 'Disease', (67, 85)) ('polycystic kidneys', 'Phenotype', 'HP:0000113', (67, 85)) ('S', 'Chemical', 'MESH:D013455', (0, 1)) 106562 32751108 Homozygous deletion of FLCN in mice resulted in early embryonic lethality; FLCN heterozygous knockout (FLCN+/-) mice appeared normal at birth, but developed kidney cysts and solid tumors, as they aged, of different histologic types (oncocytic hybrid, oncocytoma, and clear cell carcinoma with concomitant loss of heterozygosity of FLCN); these tumors displayed increased mTORC1 and TORC2 activity. ('mTORC1', 'Gene', '382056', (371, 377)) ('TORC2', 'Gene', '74343', (382, 387)) ('tumors', 'Phenotype', 'HP:0002664', (180, 186)) ('mice', 'Species', '10090', (31, 35)) ('solid tumors', 'Disease', 'MESH:D009369', (174, 186)) ('TORC2', 'Gene', (382, 387)) ('FLCN', 'Gene', (23, 27)) ('tumors', 'Disease', 'MESH:D009369', (344, 350)) ('carcinoma', 'Phenotype', 'HP:0030731', (278, 287)) ('embryonic lethality', 'Disease', (54, 73)) ('clear cell carcinoma', 'Disease', 'MESH:C538614', (267, 287)) ('tumor', 'Phenotype', 'HP:0002664', (180, 185)) ('kidney cysts', 'Disease', 'MESH:D007674', (157, 169)) ('increased', 'PosReg', (361, 370)) ('tumors', 'Disease', (180, 186)) ('oncocytoma', 'Disease', (251, 261)) ('embryonic lethality', 'Disease', 'MESH:D020964', (54, 73)) ('kidney cysts', 'Phenotype', 'HP:0000107', (157, 169)) ('kidney cysts', 'Disease', (157, 169)) ('tumors', 'Phenotype', 'HP:0002664', (344, 350)) ('tumors', 'Disease', 'MESH:D009369', (180, 186)) ('mice', 'Species', '10090', (112, 116)) ('solid tumors', 'Disease', (174, 186)) ('tumor', 'Phenotype', 'HP:0002664', (344, 349)) ('tumors', 'Disease', (344, 350)) ('mTORC1', 'Gene', (371, 377)) ('deletion', 'Var', (11, 19)) ('oncocytoma', 'Disease', 'MESH:D018249', (251, 261)) ('clear cell carcinoma', 'Disease', (267, 287)) 106563 32751108 The investigation of other mouse models further supported a role for FLCN as a positive regulator of TORC1 and provided evidence that inappropriate mTORC1 levels can be associated with renal cancerogenesis. ('mTORC1', 'Gene', (148, 154)) ('inappropriate', 'Var', (134, 147)) ('mouse', 'Species', '10090', (27, 32)) ('renal cancerogenesis', 'Disease', 'MESH:D007674', (185, 205)) ('renal cancer', 'Phenotype', 'HP:0009726', (185, 197)) ('TORC1', 'Gene', (101, 106)) ('mTORC1', 'Gene', '382056', (148, 154)) ('associated', 'Reg', (169, 179)) ('renal cancerogenesis', 'Disease', (185, 205)) ('TORC1', 'Gene', '382056', (101, 106)) ('TORC1', 'Gene', '382056', (149, 154)) ('TORC1', 'Gene', (149, 154)) ('cancer', 'Phenotype', 'HP:0002664', (191, 197)) 106568 32751108 Furthermore, various studies have shown that FLCN deficiency triggers AMPK activation; furthermore, FNIP1 mutations are associated with high AMPK activity. ('FNIP1', 'Gene', (100, 105)) ('AMPK', 'Gene', (141, 145)) ('associated', 'Reg', (120, 130)) ('FLCN deficiency', 'Disease', (45, 60)) ('FLCN deficiency', 'Disease', 'MESH:D007153', (45, 60)) ('mutations', 'Var', (106, 115)) ('AMPK', 'Gene', '5562', (141, 145)) ('AMPK', 'Gene', '5562', (70, 74)) ('AMPK', 'Gene', (70, 74)) 106576 32751108 Subjects carrying a germline pathogenic variant of MITF have a more than five-fold increased risk of developing melanoma and renal cancer, as compared to the individuals not bearing these variants. ('melanoma and renal cancer', 'Disease', 'MESH:D007680', (112, 137)) ('variant', 'Var', (40, 47)) ('cancer', 'Phenotype', 'HP:0002664', (131, 137)) ('MITF', 'Gene', (51, 55)) ('melanoma', 'Phenotype', 'HP:0002861', (112, 120)) ('renal cancer', 'Phenotype', 'HP:0009726', (125, 137)) ('MITF', 'Gene', '4286', (51, 55)) ('S', 'Chemical', 'MESH:D013455', (0, 1)) 106577 32751108 The molecular characterization of these MITF oncogenic variants showed a mutation at the level of codon 318 (E318K), located at the level of a small-ubiquitin-like modifier (SUMO) consensus site (psiKXE), determining a strong impairment of SUMOylation of MITF. ('S', 'Chemical', 'MESH:D013455', (174, 175)) ('E318K', 'SUBSTITUTION', 'None', (109, 114)) ('impairment', 'NegReg', (226, 236)) ('MITF', 'Gene', (40, 44)) ('MITF', 'Gene', '4286', (40, 44)) ('psiKXE', 'Disease', (196, 202)) ('E318K', 'Var', (109, 114)) ('psiKXE', 'Disease', 'None', (196, 202)) ('men', 'Species', '9606', (232, 235)) ('MITF', 'Gene', '4286', (255, 259)) ('MITF', 'Gene', (255, 259)) ('SUMOylation', 'MPA', (240, 251)) ('S', 'Chemical', 'MESH:D013455', (240, 241)) 106578 32751108 The E318K mutation increased the binding to the HIF1alpha promoter and increased its transcriptional activity. ('E318K', 'SUBSTITUTION', 'None', (4, 9)) ('transcriptional activity', 'MPA', (85, 109)) ('E318K', 'Var', (4, 9)) ('HIF1alpha', 'Gene', (48, 57)) ('increased', 'PosReg', (19, 28)) ('HIF1alpha', 'Gene', '3091', (48, 57)) ('increased', 'PosReg', (71, 80)) ('binding', 'Interaction', (33, 40)) 106579 32751108 However, the MITF E318K mutation does not seem to be involved in sporadic RCC: in fact, in a screening based on the analysis of 403 sporadic RCCs only one MITF E318K mutation was detected. ('RCC', 'Disease', (141, 144)) ('E318K', 'Var', (160, 165)) ('MITF', 'Gene', '4286', (13, 17)) ('MITF', 'Gene', (13, 17)) ('RCC', 'Disease', (74, 77)) ('E318K', 'SUBSTITUTION', 'None', (18, 23)) ('E318K', 'SUBSTITUTION', 'None', (160, 165)) ('RCC', 'Disease', 'MESH:C538614', (74, 77)) ('E318K', 'Var', (18, 23)) ('MITF', 'Gene', (155, 159)) ('MITF', 'Gene', '4286', (155, 159)) ('RCC', 'Disease', 'MESH:C538614', (141, 144)) 106593 32751108 In addition to these typical chromosomal losses, CHRCCs display also copy number gains that were detected in chromosomes 4, 7, 11, 12, 14q, and 18q. ('gains', 'PosReg', (81, 86)) ('CHRCCs', 'Disease', 'None', (49, 55)) ('CHRCCs', 'Disease', (49, 55)) ('copy number', 'Var', (69, 80)) 106595 32751108 The analysis of gene copy number by next generation sequencing showed the occurrence of multiple abnormalities in CHRCC; this analysis showed that the two most frequent deletions involved the tumor suppressor genes RB1 and ERBB4. ('tumor', 'Disease', (192, 197)) ('multiple abnormalities', 'Disease', (88, 110)) ('tumor', 'Phenotype', 'HP:0002664', (192, 197)) ('multiple abnormalities', 'Disease', 'MESH:D000015', (88, 110)) ('ERBB4', 'Gene', '2066', (223, 228)) ('RB1', 'Gene', (215, 218)) ('ERBB4', 'Gene', (223, 228)) ('tumor', 'Disease', 'MESH:D009369', (192, 197)) ('CHRCC', 'Disease', (114, 119)) ('RB1', 'Gene', '5925', (215, 218)) ('deletions', 'Var', (169, 178)) ('CHRCC', 'Disease', 'None', (114, 119)) 106598 32751108 The results of this study showed: (i) The typical and frequent chromosome losses described in other studies, observed in all cases corresponding to the classic variant and in about 53% of cases corresponding to the eosinophilic variant; (ii) TP53 (32% of cases) and PTEN (9% of cases) were the only two genes frequently mutated in these tumors, while mutations of other cancer-relevant genes (such as MTOR, NRAS) were found at lower frequencies; (iii) the gene expression profile showed a high index of mRNA expression correlation for CHRCC with distal regions of the nephron; (iv) the analysis of mitochondrial DNA showed mutations at the level of genes involved in respiration and oxidative phosphorylation; (v) whole genome sequencing analysis showed the occurrence of kataegis (a mutational phenomenon involving highly localized substitution mutations, C > T or C > G), occurring at the level of some chromosome regions involved in rearrangements, involving also rearrangements occurring within the TERT promoter gene region (observed in 12% of cases) and associated with elevated TERT expression. ('elevated', 'PosReg', (1076, 1084)) ('PTEN', 'Gene', (266, 270)) ('TERT', 'Gene', (1085, 1089)) ('cancer', 'Disease', 'MESH:D009369', (370, 376)) ('TERT', 'Gene', '7015', (1085, 1089)) ('rearrangements', 'Var', (967, 981)) ('men', 'Species', '9606', (945, 948)) ('NRAS', 'Gene', (407, 411)) ('PTEN', 'Gene', '5728', (266, 270)) ('tumors', 'Phenotype', 'HP:0002664', (337, 343)) ('chromosome loss', 'Disease', (63, 78)) ('kataegis', 'Disease', (772, 780)) ('TP53', 'Gene', (242, 246)) ('TERT', 'Gene', (1003, 1007)) ('TERT', 'Gene', '7015', (1003, 1007)) ('tumor', 'Phenotype', 'HP:0002664', (337, 342)) ('CHRCC', 'Disease', (535, 540)) ('CHRCC', 'Disease', 'None', (535, 540)) ('men', 'Species', '9606', (976, 979)) ('C > T or C > G', 'Var', (857, 871)) ('tumors', 'Disease', (337, 343)) ('cancer', 'Disease', (370, 376)) ('chromosome loss', 'Disease', 'MESH:D025063', (63, 78)) ('cancer', 'Phenotype', 'HP:0002664', (370, 376)) ('men', 'Species', '9606', (800, 803)) ('tumors', 'Disease', 'MESH:D009369', (337, 343)) ('NRAS', 'Gene', '4893', (407, 411)) ('MTOR', 'Gene', (401, 405)) ('TP53', 'Gene', '7157', (242, 246)) ('MTOR', 'Gene', '2475', (401, 405)) 106601 32751108 Some of these mutations may play a relevant role in the pathogenesis of CHRCC. ('role', 'Reg', (44, 48)) ('CHRCC', 'Disease', (72, 77)) ('CHRCC', 'Disease', 'None', (72, 77)) ('play', 'Reg', (28, 32)) ('mutations', 'Var', (14, 23)) ('S', 'Chemical', 'MESH:D013455', (0, 1)) 106602 32751108 Thus, the PDHB gene encodes the E1beta subunit of the pyruvate dehydrogenase complex (PDHc), catalyzing the conversion of pyruvate to acetyl-CoA, thus providing a link between glycolysis and the TCA cycle; the two mutations observed in CHRCC are reminiscent of those observed in a neurological condition associated with germline mutations of this gene and causing lactic acidosis. ('neurological condition', 'Phenotype', 'HP:0000707', (281, 303)) ('causing', 'Reg', (356, 363)) ('CHRCC', 'Disease', (236, 241)) ('pyruvate', 'Chemical', 'MESH:D019289', (122, 130)) ('PDHB', 'Gene', (10, 14)) ('PDHB', 'Gene', '5162', (10, 14)) ('acetyl-CoA', 'Chemical', 'MESH:D000105', (134, 144)) ('lactic acidosis', 'Disease', 'MESH:D000140', (364, 379)) ('CHRCC', 'Disease', 'None', (236, 241)) ('lactic acidosis', 'Phenotype', 'HP:0003128', (364, 379)) ('mutations', 'Var', (214, 223)) ('lactic acidosis', 'Disease', (364, 379)) ('TCA', 'Chemical', 'MESH:D014238', (195, 198)) ('acidosis', 'Phenotype', 'HP:0001941', (371, 379)) ('E1beta subunit', 'Gene', (32, 46)) ('pyruvate', 'Chemical', 'MESH:D019289', (54, 62)) ('E1beta subunit', 'Gene', '594', (32, 46)) 106603 32751108 PRKAG2 encodes one of the three gamma subunits of AMPK, a key sensor of cellular metabolism; the mutations of this gene, observed at the level of the inhibitory pseudosubstrate sequence within AMPK gamma subunit, may lead to constitutive AMPK activation. ('mutations', 'Var', (97, 106)) ('PRKAG2', 'Gene', '51422', (0, 6)) ('AMPK', 'Gene', (50, 54)) ('AMPK', 'Gene', '5562', (238, 242)) ('AMPK', 'Gene', '5562', (50, 54)) ('AMPK', 'Gene', (238, 242)) ('PRKAG2', 'Gene', (0, 6)) ('activation', 'PosReg', (243, 253)) ('lead to', 'Reg', (217, 224)) ('AMPK', 'Gene', '5562', (193, 197)) ('AMPK', 'Gene', (193, 197)) 106606 32751108 Some recurrent mutations have a prognostic impact in CHRCC patients: PTEN mutations correlated with decreased survival; CDKN2A alterations (including loss of the region of chromosome 9p encoding CDKN2A and promoter hypermethylation) correlated with a decreased survival. ('S', 'Chemical', 'MESH:D013455', (0, 1)) ('PTEN', 'Gene', '5728', (69, 73)) ('survival', 'MPA', (110, 118)) ('survival', 'MPA', (261, 269)) ('CHRCC', 'Disease', 'None', (53, 58)) ('CDKN2A', 'Gene', (195, 201)) ('CDKN2A', 'Gene', (120, 126)) ('mutations', 'Var', (74, 83)) ('decreased', 'NegReg', (251, 260)) ('CDKN2A', 'Gene', '1029', (195, 201)) ('decreased', 'NegReg', (100, 109)) ('CDKN2A', 'Gene', '1029', (120, 126)) ('patients', 'Species', '9606', (59, 67)) ('alterations', 'Var', (127, 138)) ('CHRCC', 'Disease', (53, 58)) ('PTEN', 'Gene', (69, 73)) 106611 32751108 This hyperdiploid pattern is due to either loss of the CHRCC-7 set-chromosomes, associated with duplication of the remaining genome or duplication of multiple chromosomes excluding the CHRCC-7 set-chromosomes: this condition was defined as imbalanced chromosome duplication (ICD). ('duplication', 'Var', (135, 146)) ('CHRCC', 'Disease', (185, 190)) ('hyperdiploid', 'Disease', (5, 17)) ('CHRCC', 'Disease', 'None', (185, 190)) ('imbalanced chromosome duplication', 'Disease', (240, 273)) ('hyperdiploid', 'Disease', 'MESH:D054198', (5, 17)) ('duplication', 'Var', (96, 107)) ('loss', 'NegReg', (43, 47)) ('CHRCC', 'Disease', (55, 60)) ('CHRCC', 'Disease', 'None', (55, 60)) 106612 32751108 The comparative analysis of metastatic and non-metastatic CHRCC showed among metastatic tumors increased frequencies of TP53 mutations, PTEN mutations, and ICD (observed at frequency of 55%, 27%, and 43%, respectively) compared with those observed in nonmetastatic CHRCC (25%, 7%, and 10%, respectively). ('mutations', 'Var', (125, 134)) ('TP53', 'Gene', '7157', (120, 124)) ('tumors', 'Disease', 'MESH:D009369', (88, 94)) ('tumors', 'Phenotype', 'HP:0002664', (88, 94)) ('mutations', 'Var', (141, 150)) ('ICD', 'Disease', (156, 159)) ('CHRCC', 'Disease', (58, 63)) ('CHRCC', 'Disease', (265, 270)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('PTEN', 'Gene', (136, 140)) ('CHRCC', 'Disease', 'None', (58, 63)) ('tumors', 'Disease', (88, 94)) ('CHRCC', 'Disease', 'None', (265, 270)) ('PTEN', 'Gene', '5728', (136, 140)) ('TP53', 'Gene', (120, 124)) 106613 32751108 Phylogenetic studies of paired-primary-metastatic samples allowed to propose a tumor progression process, involving the nearly universal loss of CHRCC-7 set-chromosomes as the only driver event in the pathogenesis of CHRCC, followed by TP53 mutations that were detected in 82% of metastatic samples and then by ICD and PTEN mutations that were detected in 82% of metastatic samples and then by ICD and PTEN mutation, occurring in a mutually exclusive manner. ('CHRCC', 'Disease', 'None', (145, 150)) ('PTEN', 'Gene', '5728', (319, 323)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) ('PTEN', 'Gene', (402, 406)) ('tumor', 'Disease', (79, 84)) ('PTEN', 'Gene', '5728', (402, 406)) ('CHRCC', 'Disease', (217, 222)) ('CHRCC', 'Disease', 'None', (217, 222)) ('loss', 'NegReg', (137, 141)) ('amp', 'Chemical', 'MESH:D000249', (292, 295)) ('amp', 'Chemical', 'MESH:D000249', (375, 378)) ('CHRCC', 'Disease', (145, 150)) ('TP53', 'Gene', '7157', (236, 240)) ('tumor', 'Disease', 'MESH:D009369', (79, 84)) ('TP53', 'Gene', (236, 240)) ('amp', 'Chemical', 'MESH:D000249', (51, 54)) ('PTEN', 'Gene', (319, 323)) ('mutations', 'Var', (241, 250)) 106637 32751108 Whole exome sequencing performed in 157 PRCCs identified several somatic mutations, occurring with a significant frequency, at the level of tumor-related genes, such as MET, SETD2, NF2, KDM6A, SMARCB1, FAT1, BAP1, PBRM1, STAG2, NFE2L2, and TP53. ('TP53', 'Gene', '7157', (240, 244)) ('STAG2', 'Gene', '10735', (221, 226)) ('PRCC', 'Gene', '5546', (40, 44)) ('tumor', 'Disease', 'MESH:D009369', (140, 145)) ('FAT1', 'Gene', (202, 206)) ('BAP1', 'Gene', (208, 212)) ('NFE2L2', 'Gene', (228, 234)) ('SMARCB1', 'Gene', '6598', (193, 200)) ('PBRM1', 'Gene', '55193', (214, 219)) ('SMARCB1', 'Gene', (193, 200)) ('STAG2', 'Gene', (221, 226)) ('MET', 'Gene', '79811', (169, 172)) ('NF2', 'Gene', '4771', (181, 184)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('PBRM1', 'Gene', (214, 219)) ('KDM6A', 'Gene', '7403', (186, 191)) ('NF2', 'Gene', (181, 184)) ('TP53', 'Gene', (240, 244)) ('FAT1', 'Gene', '2195', (202, 206)) ('SETD2', 'Gene', (174, 179)) ('PRCC', 'Gene', (40, 44)) ('BAP1', 'Gene', '8314', (208, 212)) ('SETD2', 'Gene', '29072', (174, 179)) ('KDM6A', 'Gene', (186, 191)) ('MET', 'Gene', (169, 172)) ('NFE2L2', 'Gene', '4780', (228, 234)) ('mutations', 'Var', (73, 82)) ('tumor', 'Disease', (140, 145)) 106639 32751108 However, some genetic alterations are specific to types of PRCCs: (1) MET mutations are much more frequent in type 1 than type 2 PRCCs (17% vs. 1.6%, respectively) and were observed in 11% of unclassified PRCCs; levels of MET mRNA and MET protein phosphorylation were higher in type 1 than type 2 tumors. ('type 2 tumors', 'Disease', (290, 303)) ('MET', 'Gene', '79811', (70, 73)) ('MET', 'Gene', '79811', (235, 238)) ('type 2 tumors', 'Disease', 'MESH:C000657245', (290, 303)) ('PRCC', 'Gene', (59, 63)) ('PRCC', 'Gene', '5546', (205, 209)) ('tumors', 'Phenotype', 'HP:0002664', (297, 303)) ('PRCC', 'Gene', (129, 133)) ('higher', 'PosReg', (268, 274)) ('MET', 'Gene', (222, 225)) ('observed', 'Reg', (173, 181)) ('MET', 'Gene', (70, 73)) ('tumor', 'Phenotype', 'HP:0002664', (297, 302)) ('PRCC', 'Gene', '5546', (59, 63)) ('MET', 'Gene', (235, 238)) ('mutations', 'Var', (74, 83)) ('PRCC', 'Gene', '5546', (129, 133)) ('MET', 'Gene', '79811', (222, 225)) ('PRCC', 'Gene', (205, 209)) 106640 32751108 (2) 8% type 2 PRCCs displayed 9p21 chromosomal focal loss with loss of CDKN2A locus; other type 2 PRCCs exhibited CDKN2A mutations or promoter hypermethylation, resulting in a total of 13% of tumors with CDKN2A alterations; CDKN2A loss was associated with low overall survival. ('mutations', 'Var', (121, 130)) ('CDKN2A', 'Gene', '1029', (204, 210)) ('tumors', 'Disease', (192, 198)) ('PRCC', 'Gene', (14, 18)) ('loss', 'NegReg', (53, 57)) ('CDKN2A', 'Gene', (114, 120)) ('tumors', 'Disease', 'MESH:D009369', (192, 198)) ('promoter hypermethylation', 'Var', (134, 159)) ('CDKN2A', 'Gene', (224, 230)) ('9p21', 'Gene', (30, 34)) ('tumor', 'Phenotype', 'HP:0002664', (192, 197)) ('PRCC', 'Gene', '5546', (14, 18)) ('PRCC', 'Gene', (98, 102)) ('CDKN2A', 'Gene', '1029', (114, 120)) ('CDKN2A', 'Gene', (71, 77)) ('chromosomal focal loss', 'Phenotype', 'HP:0040012', (35, 57)) ('loss', 'NegReg', (63, 67)) ('CDKN2A', 'Gene', (204, 210)) ('CDKN2A', 'Gene', '1029', (224, 230)) ('tumors', 'Phenotype', 'HP:0002664', (192, 198)) ('CDKN2A', 'Gene', '1029', (71, 77)) ('PRCC', 'Gene', '5546', (98, 102)) 106641 32751108 (3) Type 2 PRCCs are associated with mutations in chromatin-modifying genes SETD2 (19.4%), BAP1 (10.4%), and PBRM1 (11.9%) which are frequently mutated in CCRCCs; mutations of BAP1 and PBRM1 were mutually exclusive, whereas SETD2 mutations co-occurred with PBMR1 mutations in most cases. ('SETD2', 'Gene', (76, 81)) ('BAP1', 'Gene', (91, 95)) ('PRCC', 'Gene', '5546', (11, 15)) ('PBRM1', 'Gene', (185, 190)) ('RCC', 'Disease', (12, 15)) ('BAP1', 'Gene', (176, 180)) ('RCC', 'Disease', 'MESH:C538614', (157, 160)) ('SETD2', 'Gene', '29072', (76, 81)) ('RCC', 'Disease', 'MESH:C538614', (12, 15)) ('SETD2', 'Gene', (224, 229)) ('associated', 'Reg', (21, 31)) ('PRCC', 'Gene', (11, 15)) ('PBRM1', 'Gene', '55193', (109, 114)) ('PBMR1', 'Gene', (257, 262)) ('mutations', 'Var', (37, 46)) ('SETD2', 'Gene', '29072', (224, 229)) ('BAP1', 'Gene', '8314', (91, 95)) ('mutations', 'Var', (163, 172)) ('PBRM1', 'Gene', (109, 114)) ('BAP1', 'Gene', '8314', (176, 180)) ('PBRM1', 'Gene', '55193', (185, 190)) ('RCC', 'Disease', (157, 160)) 106642 32751108 (4) Another feature of type 2 PRCCs consists in the increased expression of NRF2-associated response element (ARE) pathway; these findings were in line with other studies showing increased activation of the NRF2-ARE pathway in type 2 PRCCs and mutations in NRF2-ARE pathway genes NFE2L2, CUL3, KEAP1, and SRT1. ('NRF2', 'Gene', '4780', (76, 80)) ('CUL3', 'Gene', (288, 292)) ('NRF2', 'Gene', (257, 261)) ('men', 'Species', '9606', (104, 107)) ('PRCC', 'Gene', (30, 34)) ('PRCC', 'Gene', (234, 238)) ('NRF2', 'Gene', '4780', (207, 211)) ('NRF2', 'Gene', (76, 80)) ('S', 'Chemical', 'MESH:D013455', (305, 306)) ('mutations', 'Var', (244, 253)) ('NFE2L2', 'Gene', '4780', (280, 286)) ('KEAP1', 'Gene', '9817', (294, 299)) ('KEAP1', 'Gene', (294, 299)) ('NRF2', 'Gene', (207, 211)) ('type', 'Disease', (227, 231)) ('PRCC', 'Gene', '5546', (30, 34)) ('PRCC', 'Gene', '5546', (234, 238)) ('CUL3', 'Gene', '8452', (288, 292)) ('NFE2L2', 'Gene', (280, 286)) ('activation', 'PosReg', (189, 199)) ('NRF2', 'Gene', '4780', (257, 261)) 106643 32751108 (5) A CpG island methylator phenotype (CIMP) was observed in a subgroup of type 2 PRCCs characterized by mutations of FH gene and poor survival. ('PRCC', 'Gene', (82, 86)) ('FH', 'Gene', '2271', (118, 120)) ('mutations', 'Var', (105, 114)) ('observed', 'Reg', (49, 57)) ('PRCC', 'Gene', '5546', (82, 86)) 106644 32751108 Finally, from this study it emerges that unclassified PRCCs display molecular properties hybrid between type 1 and type 2 PRCCs; the frequency of chromosomal 7 gain in these tumors is intermediate (26%) between type 1 (85%) and type 2 (18%). ('tumors', 'Disease', (174, 180)) ('tumors', 'Disease', 'MESH:D009369', (174, 180)) ('PRCC', 'Gene', (122, 126)) ('gain', 'PosReg', (160, 164)) ('tumor', 'Phenotype', 'HP:0002664', (174, 179)) ('chromosomal 7', 'Var', (146, 159)) ('PRCC', 'Gene', '5546', (54, 58)) ('PRCC', 'Gene', '5546', (122, 126)) ('tumors', 'Phenotype', 'HP:0002664', (174, 180)) ('PRCC', 'Gene', (54, 58)) 106645 32751108 in their study of molecular characterization of non-clear RCCs reported a detailed analysis of MET mutations occurring in PRCCs; particularly, they observed MET mutations in 15% of the PRCC samples: all these mutations, with just a single exception, affected the kinase domain of MET, all displaying elevated phosphorylation, suggesting their constitutive activation. ('PRCC', 'Gene', '5546', (185, 189)) ('RCC', 'Disease', (123, 126)) ('RCC', 'Disease', (58, 61)) ('MET', 'Gene', (95, 98)) ('phosphorylation', 'MPA', (309, 324)) ('RCC', 'Disease', (186, 189)) ('RCC', 'Disease', 'MESH:C538614', (123, 126)) ('MET', 'Gene', '79811', (280, 283)) ('RCC', 'Disease', 'MESH:C538614', (58, 61)) ('amp', 'Chemical', 'MESH:D000249', (191, 194)) ('MET', 'Gene', (157, 160)) ('PRCC', 'Gene', (122, 126)) ('PRCC', 'Gene', (185, 189)) ('RCC', 'Disease', 'MESH:C538614', (186, 189)) ('kinase domain', 'MPA', (263, 276)) ('MET', 'Gene', '79811', (95, 98)) ('affected', 'Reg', (250, 258)) ('mutations', 'Var', (209, 218)) ('PRCC', 'Gene', '5546', (122, 126)) ('MET', 'Gene', (280, 283)) ('MET', 'Gene', '79811', (157, 160)) ('elevated', 'PosReg', (300, 308)) 106647 32751108 Particularly, in patients with type 1 PRCC the most commonly altered genes were MET (33%), TERT (30%), CDKN2A/B (18%), and EGFR (8%); in patients with type 2 PRCC the most recurrent gene mutations were CDKN2A/B (18%), TERT (18%), NF2 (13%), FH (13%), and MET (7%). ('EGFR', 'Gene', (123, 127)) ('PRCC', 'Gene', (158, 162)) ('MET', 'Gene', (255, 258)) ('NF2', 'Gene', '4771', (230, 233)) ('PRCC', 'Gene', (38, 42)) ('CDKN2A/B', 'Gene', '1029;1030', (202, 210)) ('NF2', 'Gene', (230, 233)) ('CDKN2A/B', 'Gene', (103, 111)) ('EGFR', 'Gene', '1956', (123, 127)) ('TERT', 'Gene', (218, 222)) ('MET', 'Gene', '79811', (255, 258)) ('PRCC', 'Gene', '5546', (158, 162)) ('MET', 'Gene', (80, 83)) ('PRCC', 'Gene', '5546', (38, 42)) ('FH', 'Gene', '2271', (241, 243)) ('TERT', 'Gene', (91, 95)) ('TERT', 'Gene', '7015', (218, 222)) ('patients', 'Species', '9606', (137, 145)) ('TERT', 'Gene', '7015', (91, 95)) ('patients', 'Species', '9606', (17, 25)) ('CDKN2A/B', 'Gene', '1029;1030', (103, 111)) ('CDKN2A/B', 'Gene', (202, 210)) ('mutations', 'Var', (187, 196)) ('MET', 'Gene', '79811', (80, 83)) 106651 32751108 Li and coworkers using this approach discovered mutations at the level of an intron of MET gene, connected to an oncogenically relevant splicing event; furthermore, in other cases a methylation dysregulation on nearby, leading to a cryptic promoter activation of the MET gene was identified. ('MET', 'Gene', '79811', (87, 90)) ('methylation dysregulation', 'Var', (182, 207)) ('MET', 'Gene', (87, 90)) ('MET', 'Gene', '79811', (267, 270)) ('mutations', 'Var', (48, 57)) ('MET', 'Gene', (267, 270)) 106652 32751108 Furthermore, it was identified the recurrent mutation of the long noncoding RNA NEAT1 and these mutations are associated with increased NEAT1 expression and negative outcome. ('NEAT1', 'Gene', (136, 141)) ('NEAT1', 'Gene', '283131', (80, 85)) ('mutation', 'Var', (45, 53)) ('expression', 'MPA', (142, 152)) ('NEAT1', 'Gene', (80, 85)) ('increased', 'PosReg', (126, 135)) ('NEAT1', 'Gene', '283131', (136, 141)) 106654 32751108 Through the analysis of 29 patients at the level of various tumor regions (center and periphery of each tumor) the authors reached the important conclusion that, at variance with previous studies in CCRCC, in PRCC driver gene mutations and most arm-level somatic copy number alterations are clonal. ('PRCC', 'Gene', '5546', (209, 213)) ('RCC', 'Disease', 'MESH:C538614', (201, 204)) ('RCC', 'Disease', (201, 204)) ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('PRCC', 'Gene', (209, 213)) ('tumor', 'Disease', (104, 109)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('tumor', 'Disease', 'MESH:D009369', (104, 109)) ('patients', 'Species', '9606', (27, 35)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('mutations', 'Var', (226, 235)) ('RCC', 'Disease', (210, 213)) ('tumor', 'Disease', (60, 65)) ('RCC', 'Disease', 'MESH:C538614', (210, 213)) 106669 32751108 The most frequent and typical genetic alteration of CCRCC is represented by biallelic inactivation on the VHL gene determined by allelic deletion or loss of heterogeneity on chromosome 3p (observed in >90% of cases), together with gene mutation (observed in about 50% of cases) or promoter hypermethylation (observed in 5-10% of cases). ('biallelic', 'Var', (76, 85)) ('RCC', 'Disease', (54, 57)) ('RCC', 'Disease', 'MESH:C538614', (54, 57)) ('VHL', 'Gene', (106, 109)) ('VHL', 'Gene', '7428', (106, 109)) 106670 32751108 Other frequent genetic alterations are represented by mutations in genes involved in chromatin modification, such as PBRM1, SETD2, KDM5C, KDM6A, and BAP1. ('SETD2', 'Gene', (124, 129)) ('KDM5C', 'Gene', '8242', (131, 136)) ('KDM6A', 'Gene', (138, 143)) ('BAP1', 'Gene', '8314', (149, 153)) ('mutations', 'Var', (54, 63)) ('PBRM1', 'Gene', (117, 122)) ('KDM6A', 'Gene', '7403', (138, 143)) ('PBRM1', 'Gene', '55193', (117, 122)) ('BAP1', 'Gene', (149, 153)) ('SETD2', 'Gene', '29072', (124, 129)) ('KDM5C', 'Gene', (131, 136)) 106673 32751108 Almost all cases exhibiting PBMR1, SETD2, and BAP1 mutations occurred in CCRCC cases displaying VHL inactivation. ('mutations', 'Var', (51, 60)) ('BAP1', 'Gene', '8314', (46, 50)) ('RCC', 'Disease', 'MESH:C538614', (75, 78)) ('PBMR1', 'Gene', (28, 33)) ('RCC', 'Disease', (75, 78)) ('occurred', 'Reg', (61, 69)) ('VHL', 'Gene', (96, 99)) ('BAP1', 'Gene', (46, 50)) ('SETD2', 'Gene', '29072', (35, 40)) ('VHL', 'Gene', '7428', (96, 99)) ('SETD2', 'Gene', (35, 40)) 106674 32751108 Importantly, SETD2 and BAP1 mutations displayed lower allelic burdens than coexisting VHL mutations, suggesting that these mutations are acquired at later times during tumor development. ('BAP1', 'Gene', (23, 27)) ('allelic burdens', 'MPA', (54, 69)) ('tumor', 'Disease', (168, 173)) ('tumor', 'Disease', 'MESH:D009369', (168, 173)) ('lower', 'NegReg', (48, 53)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) ('BAP1', 'Gene', '8314', (23, 27)) ('SETD2', 'Gene', '29072', (13, 18)) ('VHL', 'Gene', '7428', (86, 89)) ('SETD2', 'Gene', (13, 18)) ('VHL', 'Gene', (86, 89)) ('mutations', 'Var', (28, 37)) ('men', 'Species', '9606', (181, 184)) 106675 32751108 PBRM1 mutations had no significant impact on overall survival, whereas BAP1 mutations, mutually exclusive with PBRM1 mutations, were associated with a shorter overall survival; finally, SETD2 mutations displayed a high relapse rate. ('overall survival', 'MPA', (159, 175)) ('SETD2', 'Gene', (186, 191)) ('mutations', 'Var', (76, 85)) ('mutations', 'Var', (192, 201)) ('shorter', 'NegReg', (151, 158)) ('PBRM1', 'Gene', (0, 5)) ('PBRM1', 'Gene', '55193', (0, 5)) ('BAP1', 'Gene', '8314', (71, 75)) ('PBRM1', 'Gene', (111, 116)) ('PBRM1', 'Gene', '55193', (111, 116)) ('BAP1', 'Gene', (71, 75)) ('SETD2', 'Gene', '29072', (186, 191)) 106676 32751108 Interestingly, 5% of CCRCC patients displayed TCEB1 mutations, not associated with VHL gene alterations, but constantly associated with loss of chromosome 8; TCEB1 encodes a protein involved in the formation of the RNA polymerase II elongation factor complex but also involved in the VHL complex formation. ('mutations', 'Var', (52, 61)) ('VHL', 'Gene', '7428', (83, 86)) ('VHL', 'Gene', (284, 287)) ('TCEB1', 'Gene', '6921', (158, 163)) ('TCEB1', 'Gene', (158, 163)) ('VHL', 'Gene', '7428', (284, 287)) ('RCC', 'Disease', 'MESH:C538614', (23, 26)) ('patients', 'Species', '9606', (27, 35)) ('RCC', 'Disease', (23, 26)) ('TCEB1', 'Gene', '6921', (46, 51)) ('TCEB1', 'Gene', (46, 51)) ('VHL', 'Gene', (83, 86)) 106678 32751108 Therefore, CCRCC with VHL loss or with TCEB1 mutations accounts for 95.4% of the cases. ('TCEB1', 'Gene', (39, 44)) ('mutations', 'Var', (45, 54)) ('VHL loss', 'Disease', 'MESH:D006623', (22, 30)) ('RCC', 'Disease', 'MESH:C538614', (13, 16)) ('RCC', 'Disease', (13, 16)) ('TCEB1', 'Gene', '6921', (39, 44)) ('VHL loss', 'Disease', (22, 30)) 106679 32751108 Other genes recurrently mutated in CCRCC included TET2, KEAP1, and MTOR: TET2 mutations and deletions occurred in 16% of cases; mutually exclusive mutations in KEAP1, NRF2, and CUL3 occurred in 6.6% of cases; MTOR mutations were observed in 5.7% of cases. ('mutations', 'Var', (147, 156)) ('CUL3', 'Gene', '8452', (177, 181)) ('MTOR', 'Gene', (67, 71)) ('MTOR', 'Gene', (209, 213)) ('RCC', 'Disease', (37, 40)) ('MTOR', 'Gene', '2475', (67, 71)) ('MTOR', 'Gene', '2475', (209, 213)) ('KEAP1', 'Gene', '9817', (56, 61)) ('TET2', 'Gene', (50, 54)) ('mutations', 'Var', (78, 87)) ('RCC', 'Disease', 'MESH:C538614', (37, 40)) ('NRF2', 'Gene', '4780', (167, 171)) ('KEAP1', 'Gene', (56, 61)) ('KEAP1', 'Gene', '9817', (160, 165)) ('TET2', 'Gene', (73, 77)) ('KEAP1', 'Gene', (160, 165)) ('CUL3', 'Gene', (177, 181)) ('NRF2', 'Gene', (167, 171)) ('TET2', 'Gene', '54790', (50, 54)) ('TET2', 'Gene', '54790', (73, 77)) ('deletions', 'Var', (92, 101)) 106684 32751108 reported among the CNAs the loss of 8p with or without loss of 8q (20% of cases), an abnormality frequently associated with TCEB1 mutations. ('TCEB1', 'Gene', '6921', (124, 129)) ('mutations', 'Var', (130, 139)) ('TCEB1', 'Gene', (124, 129)) ('loss', 'NegReg', (28, 32)) 106685 32751108 Integrative data analysis showed that the most frequently mutated network involved VHL and numerous interacting partners, leading to activation of the transcription factor program mediated by HIF1A/ARNT; the second most mutated network included PBRM1, ARID1A, and SMARCA4, key genes at the level of chromatin remodeling complex; the mutations of the chromatin regulators PBRM1, STD2, and BAP1 induce different patterns of altered gene expression in the context of a background caused by VHL loss; mutually exclusive alterations targeting multiple complexes of the PI3K/AKT/MTOR pathway occur in about 28% of the cases and suggest a potential therapeutic targeting. ('ARNT', 'Gene', '405', (198, 202)) ('HIF1A', 'Gene', (192, 197)) ('SMARCA4', 'Gene', (264, 271)) ('AKT', 'Gene', (569, 572)) ('ARNT', 'Gene', (198, 202)) ('S', 'Chemical', 'MESH:D013455', (378, 379)) ('BAP1', 'Gene', '8314', (388, 392)) ('PBRM1', 'Gene', '55193', (245, 250)) ('MTOR', 'Gene', (573, 577)) ('mutations', 'Var', (333, 342)) ('VHL', 'Gene', (83, 86)) ('PBRM1', 'Gene', (245, 250)) ('VHL loss', 'Disease', (487, 495)) ('S', 'Chemical', 'MESH:D013455', (264, 265)) ('MTOR', 'Gene', '2475', (573, 577)) ('BAP1', 'Gene', (388, 392)) ('HIF1A', 'Gene', '3091', (192, 197)) ('VHL', 'Gene', (487, 490)) ('PBRM1', 'Gene', '55193', (371, 376)) ('AKT', 'Gene', '207', (569, 572)) ('VHL loss', 'Disease', 'MESH:D006623', (487, 495)) ('SMARCA4', 'Gene', '6597', (264, 271)) ('ARID1A', 'Gene', (252, 258)) ('VHL', 'Gene', '7428', (83, 86)) ('PBRM1', 'Gene', (371, 376)) ('VHL', 'Gene', '7428', (487, 490)) ('ARID1A', 'Gene', '8289', (252, 258)) 106687 32751108 evaluated all genetic alterations occurring in CCRCCC-inducing activation of PI3K signaling and estimated a frequency of 76% of cases exhibiting PI3K activation; furthermore, they reported also the frequent (40%) activation of p53 signaling. ('RCC', 'Disease', (49, 52)) ('p53', 'Gene', (227, 230)) ('genetic alterations', 'Var', (14, 33)) ('p53', 'Gene', '7157', (227, 230)) ('activation', 'PosReg', (213, 223)) ('PI3K', 'MPA', (77, 81)) ('activation', 'PosReg', (63, 73)) ('RCC', 'Disease', 'MESH:C538614', (49, 52)) 106690 32751108 Copy number gains of chromosome 5q occurring in CCRCC drive overexpression of the gene SQSTM1; the p62 SQSMT1 protein is involved in activation of NRF2, and through this mechanism, in promotion of resistance to redox stress and in stimulation of renal cancer cell growth in vitro and in vivo. ('promotion', 'PosReg', (184, 193)) ('Copy number', 'Var', (0, 11)) ('SQSTM1', 'Gene', (87, 93)) ('NRF2', 'Gene', (147, 151)) ('stimulation', 'PosReg', (231, 242)) ('overexpression', 'PosReg', (60, 74)) ('protein', 'Protein', (110, 117)) ('RCC', 'Disease', (50, 53)) ('p62', 'Var', (99, 102)) ('resistance to redox stress', 'MPA', (197, 223)) ('SQSTM1', 'Gene', '8878', (87, 93)) ('RCC', 'Disease', 'MESH:C538614', (50, 53)) ('renal cancer', 'Disease', (246, 258)) ('S', 'Chemical', 'MESH:D013455', (105, 106)) ('SQSMT1', 'Gene', (103, 109)) ('cancer', 'Phenotype', 'HP:0002664', (252, 258)) ('renal cancer', 'Phenotype', 'HP:0009726', (246, 258)) ('S', 'Chemical', 'MESH:D013455', (89, 90)) ('S', 'Chemical', 'MESH:D013455', (103, 104)) ('S', 'Chemical', 'MESH:D013455', (87, 88)) ('activation', 'PosReg', (133, 143)) ('NRF2', 'Gene', '4780', (147, 151)) ('renal cancer', 'Disease', 'MESH:D007680', (246, 258)) 106693 32751108 refined the analysis of molecular abnormalities of CCRCC performed by TCGA and showed that in these tumors: TP53 and BAP1 mutations and CDKN2A alterations were associated with decreased survival; at mRNA expression level an increased expression of the vasculature development signature, due to the activation of the VHL/HIF pathway, increased the immune response signature compared to other RCC types and increased ribose metabolism pathway, associated with poor survival. ('TP53', 'Gene', (108, 112)) ('expression', 'MPA', (234, 244)) ('ribose metabolism pathway', 'Pathway', (415, 440)) ('decreased', 'NegReg', (176, 185)) ('RCC', 'Disease', (53, 56)) ('activation', 'PosReg', (298, 308)) ('VHL', 'Gene', '7428', (316, 319)) ('men', 'Species', '9606', (271, 274)) ('BAP1', 'Gene', '8314', (117, 121)) ('RCC', 'Disease', 'MESH:C538614', (53, 56)) ('tumors', 'Phenotype', 'HP:0002664', (100, 106)) ('CDKN2A', 'Gene', (136, 142)) ('ribose', 'Chemical', 'MESH:D012266', (415, 421)) ('RCC', 'Disease', (391, 394)) ('increased', 'PosReg', (224, 233)) ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('TP53', 'Gene', '7157', (108, 112)) ('tumors', 'Disease', (100, 106)) ('CDKN2A', 'Gene', '1029', (136, 142)) ('BAP1', 'Gene', (117, 121)) ('RCC', 'Disease', 'MESH:C538614', (391, 394)) ('alterations', 'Var', (143, 154)) ('tumors', 'Disease', 'MESH:D009369', (100, 106)) ('immune', 'MPA', (347, 353)) ('mutations', 'Var', (122, 131)) ('VHL', 'Gene', (316, 319)) ('increased', 'PosReg', (333, 342)) 106701 32751108 The results of these two studies provided some fundamental data about intratumor heterogeneity of CCRCC: only a small fraction of genetic alterations display a clonal distribution, such as VHL loss and chromosome arm 3p loss, whereas other genes recurrently mutated such as SETD2 and BAP1 have a subclonal pattern of distribution within the tumor. ('chromosome', 'Var', (202, 212)) ('VHL loss', 'Disease', 'MESH:D006623', (189, 197)) ('tumor', 'Phenotype', 'HP:0002664', (341, 346)) ('SETD2', 'Gene', '29072', (274, 279)) ('men', 'Species', '9606', (52, 55)) ('alterations', 'Var', (138, 149)) ('VHL loss', 'Disease', (189, 197)) ('tumor', 'Disease', (341, 346)) ('SETD2', 'Gene', (274, 279)) ('BAP1', 'Gene', '8314', (284, 288)) ('tumor', 'Disease', 'MESH:D009369', (75, 80)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('BAP1', 'Gene', (284, 288)) ('RCC', 'Disease', 'MESH:C538614', (100, 103)) ('RCC', 'Disease', (100, 103)) ('tumor', 'Disease', (75, 80)) ('tumor', 'Disease', 'MESH:D009369', (341, 346)) ('loss', 'NegReg', (220, 224)) 106702 32751108 It is of interest to note that the multi-region sequencing allowed the identification of a higher frequency of gene mutations and copy number alterations than by single tumor sampling. ('tumor', 'Disease', 'MESH:D009369', (169, 174)) ('gene mutations', 'Var', (111, 125)) ('tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('tumor', 'Disease', (169, 174)) ('copy number alterations', 'Var', (130, 153)) ('amp', 'Chemical', 'MESH:D000249', (176, 179)) 106708 32751108 Huang and coworkers have analyzed the clonal architectures of 473 CCRCC patients and showed that the evolution patterns of CCRCC have consistent inter-patient heterogeneity, with del(3p) being considered as the common earliest molecular event, followed by three most recurrent patterns of clonal evolution dictated by different molecular events: (i) VHL and PBRM1 mutations; (ii) del(14q); (iii) amp(7), del(1p), del(6q), amp(7q), del(3q). ('amp(7', 'Var', (396, 401)) ('RCC', 'Disease', (125, 128)) ('patient', 'Species', '9606', (72, 79)) ('RCC', 'Disease', (68, 71)) ('amp(7q', 'Var', (422, 428)) ('VHL', 'Gene', '7428', (350, 353)) ('del(1p', 'Gene', '10085', (404, 410)) ('PBRM1', 'Gene', '55193', (358, 363)) ('RCC', 'Disease', 'MESH:C538614', (125, 128)) ('patient', 'Species', '9606', (151, 158)) ('amp', 'Chemical', 'MESH:D000249', (422, 425)) ('RCC', 'Disease', 'MESH:C538614', (68, 71)) ('mutations', 'Var', (364, 373)) ('PBRM1', 'Gene', (358, 363)) ('del(14q)', 'Var', (380, 388)) ('del(3q', 'Var', (431, 437)) ('del(6q', 'Var', (413, 419)) ('amp', 'Chemical', 'MESH:D000249', (396, 399)) ('VHL', 'Gene', (350, 353)) ('patients', 'Species', '9606', (72, 80)) 106709 32751108 The analysis of these patients allowed to identify three prognostic subtypes of CCRCC with different clonal architectures and immune infiltrates: patients with a long-life expectancy are enriched with VHL, but depleted of BAP1 mutations, and have high levels of Th17 and CD8+T lymphocytes, while patients with a short survival are characterized by high burden of CNAs (frequent del(14q)), high levels of Tregs and Th2 cells. ('VHL', 'Gene', (201, 204)) ('VHL', 'Gene', '7428', (201, 204)) ('CD8', 'Gene', (271, 274)) ('patients', 'Species', '9606', (22, 30)) ('Th17', 'MPA', (262, 266)) ('CD8', 'Gene', '925', (271, 274)) ('depleted', 'NegReg', (210, 218)) ('RCC', 'Disease', 'MESH:C538614', (82, 85)) ('BAP1', 'Gene', '8314', (222, 226)) ('RCC', 'Disease', (82, 85)) ('del(14q', 'Var', (378, 385)) ('patients', 'Species', '9606', (296, 304)) ('patients', 'Species', '9606', (146, 154)) ('BAP1', 'Gene', (222, 226)) 106711 32751108 At arm level, 3p loss (93%) was the most frequent CNA, followed by 5q gain (54%), chromosome 14q loss (42%), chromosome 7 gain (34%), and chromosome 9 loss (21%); furthermore, about 13% of tumors displayed extensive copy number variations along all chromosomes, thus indicating a high degree of genomic instability. ('loss', 'NegReg', (97, 101)) ('3p loss', 'Var', (14, 21)) ('gain', 'PosReg', (70, 74)) ('tumors', 'Disease', (189, 195)) ('tumors', 'Disease', 'MESH:D009369', (189, 195)) ('tumors', 'Phenotype', 'HP:0002664', (189, 195)) ('loss', 'NegReg', (151, 155)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) ('gain', 'PosReg', (122, 126)) ('copy', 'MPA', (216, 220)) 106712 32751108 This analysis showed also that 61% of CCRCC cases displayed one or more translocations, mainly involving the chromosome 3p locus and chromosome 5 (20%). ('RCC', 'Disease', 'MESH:C538614', (40, 43)) ('translocations', 'Var', (72, 86)) ('RCC', 'Disease', (40, 43)) 106713 32751108 This study confirmed the data on the frequency of most recurrence gene mutations and provided evidence that all the genetic alterations, including VHL, PBMR1, BAP1, KDM5C, and SETD2 are related to genetic events resulting in reduced expression of both mRNA and protein, thus indicating loss-of-function and supporting the classification of these genes as tumor suppressors. ('BAP1', 'Gene', '8314', (159, 163)) ('expression', 'MPA', (233, 243)) ('alterations', 'Var', (124, 135)) ('reduced', 'NegReg', (225, 232)) ('KDM5C', 'Gene', (165, 170)) ('SETD2', 'Gene', (176, 181)) ('tumor', 'Phenotype', 'HP:0002664', (355, 360)) ('protein', 'Protein', (261, 268)) ('VHL', 'Gene', (147, 150)) ('mutations', 'Var', (71, 80)) ('SETD2', 'Gene', '29072', (176, 181)) ('BAP1', 'Gene', (159, 163)) ('mRNA and', 'MPA', (252, 260)) ('loss-of-function', 'NegReg', (286, 302)) ('VHL', 'Gene', '7428', (147, 150)) ('KDM5C', 'Gene', '8242', (165, 170)) ('PBMR1', 'Gene', (152, 157)) ('tumor', 'Disease', (355, 360)) ('tumor', 'Disease', 'MESH:D009369', (355, 360)) 106716 32751108 The proteomic analysis allowed the subdivision of CCRCC into three groups: CCRCC1 associated with higher tumor grade and stage and characterized by elevated adaptive immune response, N-linked glycosylation, OXPHOS protein expression and fatty acid metabolism and high frequency of BAP1 mutations and CIMP+ status; CCRCC2 and CCRCC3 were associated with lower tumor grade and stage: tumors in CCRCC2 were associated with tumor immunity, whereas tumors in CCRCC3 with glycolysis, mTOR signaling, and hypoxia and display higher frequency of PBRM1 mutations. ('BAP1', 'Gene', (281, 285)) ('tumor', 'Phenotype', 'HP:0002664', (420, 425)) ('RCC', 'Disease', 'MESH:C538614', (77, 80)) ('tumor', 'Phenotype', 'HP:0002664', (444, 449)) ('tumors', 'Disease', (382, 388)) ('tumors', 'Disease', (444, 450)) ('RCC', 'Disease', 'MESH:C538614', (394, 397)) ('RCC', 'Disease', (456, 459)) ('S', 'Chemical', 'MESH:D013455', (212, 213)) ('mTOR', 'Gene', (478, 482)) ('RCC', 'Disease', (52, 55)) ('PBRM1', 'Gene', '55193', (538, 543)) ('glycolysis', 'MPA', (466, 476)) ('tumor', 'Disease', (382, 387)) ('tumor', 'Disease', (359, 364)) ('tumors', 'Disease', 'MESH:D009369', (444, 450)) ('RCC', 'Disease', 'MESH:C538614', (456, 459)) ('associated', 'Reg', (404, 414)) ('tumor', 'Disease', (105, 110)) ('tumors', 'Disease', 'MESH:D009369', (382, 388)) ('tumor', 'Disease', 'MESH:D009369', (382, 387)) ('PBRM1', 'Gene', (538, 543)) ('tumor', 'Disease', 'MESH:D009369', (359, 364)) ('mTOR', 'Gene', '2475', (478, 482)) ('RCC', 'Disease', (327, 330)) ('RCC', 'Disease', 'MESH:C538614', (52, 55)) ('tumor', 'Disease', 'MESH:D009369', (105, 110)) ('tumor', 'Disease', (420, 425)) ('hypoxia', 'Disease', (498, 505)) ('tumor', 'Disease', (444, 449)) ('BAP1', 'Gene', '8314', (281, 285)) ('RCC', 'Disease', (316, 319)) ('tumor', 'Disease', 'MESH:D009369', (420, 425)) ('tumor', 'Phenotype', 'HP:0002664', (382, 387)) ('tumor', 'Disease', 'MESH:D009369', (444, 449)) ('tumor', 'Phenotype', 'HP:0002664', (359, 364)) ('mutations', 'Var', (544, 553)) ('RCC', 'Disease', 'MESH:C538614', (327, 330)) ('RCC', 'Disease', (77, 80)) ('RCC', 'Disease', (394, 397)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('tumors', 'Phenotype', 'HP:0002664', (382, 388)) ('tumors', 'Phenotype', 'HP:0002664', (444, 450)) ('hypoxia', 'Disease', 'MESH:D000860', (498, 505)) ('RCC', 'Disease', 'MESH:C538614', (316, 319)) 106726 32751108 62% of these patients displayed VHL mutations and 44% PBMR1 mutations; angiogenesis-related gene expression signature was higher in VHL-mutated and PBRM1-mutated CCRCCs; within treatment evaluation showed that PBRM1 mutations were associated with improved PFS in the sunitinib arm; in the PBRM1-mutated patients atezolizumab+bevacizumab showed improved PFS compared to atezolizumab alone. ('PBRM1', 'Gene', '55193', (289, 294)) ('S', 'Chemical', 'MESH:D013455', (355, 356)) ('VHL', 'Gene', '7428', (32, 35)) ('patients', 'Species', '9606', (13, 21)) ('RCC', 'Disease', 'MESH:C538614', (164, 167)) ('PBRM1', 'Gene', (210, 215)) ('PBRM1', 'Gene', (289, 294)) ('VHL', 'Gene', (132, 135)) ('S', 'Chemical', 'MESH:D013455', (258, 259)) ('improved', 'PosReg', (247, 255)) ('sunitinib', 'Chemical', 'MESH:D000077210', (267, 276)) ('men', 'Species', '9606', (182, 185)) ('PBRM1', 'Gene', '55193', (148, 153)) ('VHL', 'Gene', '7428', (132, 135)) ('PFS', 'Disease', (256, 259)) ('PBRM1', 'Gene', (148, 153)) ('patients', 'Species', '9606', (303, 311)) ('VHL', 'Gene', (32, 35)) ('bevacizumab', 'Chemical', 'MESH:D000068258', (325, 336)) ('atezolizumab', 'Chemical', 'MESH:C000594389', (312, 324)) ('RCC', 'Disease', (164, 167)) ('mutations', 'Var', (216, 225)) ('atezolizumab', 'Chemical', 'MESH:C000594389', (369, 381)) ('PBRM1', 'Gene', '55193', (210, 215)) 106727 32751108 Whole genome sequencing studies performed in 35 metastatic CCRCC patients undergoing treatment with an anti-PD-1 blocking agent showed that clinical benefit to this treatment was significantly associated with mutations in the PBMR1 gene. ('men', 'Species', '9606', (90, 93)) ('PBMR1', 'Gene', (226, 231)) ('men', 'Species', '9606', (170, 173)) ('PD-1', 'Gene', (108, 112)) ('RCC', 'Disease', 'MESH:C538614', (61, 64)) ('mutations', 'Var', (209, 218)) ('RCC', 'Disease', (61, 64)) ('PD-1', 'Gene', '5133', (108, 112)) ('patients', 'Species', '9606', (65, 73)) ('associated', 'Reg', (193, 203)) 106733 32751108 Loss of SMARCB1 (also known as INI1) is a key diagnostic feature of these tumors: Calderaro et al. ('SMARCB1', 'Gene', '6598', (8, 15)) ('SMARCB1', 'Gene', (8, 15)) ('tumor', 'Phenotype', 'HP:0002664', (74, 79)) ('tumors', 'Phenotype', 'HP:0002664', (74, 80)) ('INI1', 'Gene', (31, 35)) ('INI1', 'Gene', '6598', (31, 35)) ('Loss', 'Var', (0, 4)) ('tumors', 'Disease', 'MESH:D009369', (74, 80)) ('tumors', 'Disease', (74, 80)) 106736 32751108 reported novel balanced translocations disrupting SMARCB1 in 4 of 5 cases studied; all these 4 cases occurred in patients with sickle cell trait or disease, whereas the remaining case displayed a homozygous deletion of SMARCB1 and presented in a patient with normal hemoglobin. ('patient', 'Species', '9606', (246, 253)) ('patient', 'Species', '9606', (113, 120)) ('sickle cell trait', 'Disease', (127, 144)) ('SMARCB1', 'Gene', '6598', (50, 57)) ('SMARCB1', 'Gene', (219, 226)) ('occurred', 'Reg', (101, 109)) ('patients', 'Species', '9606', (113, 121)) ('SMARCB1', 'Gene', (50, 57)) ('SMARCB1', 'Gene', '6598', (219, 226)) ('balanced translocations', 'Var', (15, 38)) ('disrupting', 'NegReg', (39, 49)) 106740 32751108 Tumors pertaining to the three subsets associated with different FISH findings displayed comparable clinicopathologic features; the only peculiarity was related to the cases with homozygous SMARCB1 deletion being associated with the solid growth pattern, whereas tumor-bearing SMARCB1 translocations were more associated with reticular/cribiform growth. ('reticular/cribiform growth', 'Disease', (326, 352)) ('associated', 'Reg', (213, 223)) ('deletion', 'Var', (198, 206)) ('tumor', 'Disease', 'MESH:D009369', (263, 268)) ('SMARCB1', 'Gene', (190, 197)) ('SMARCB1', 'Gene', '6598', (190, 197)) ('tumor', 'Phenotype', 'HP:0002664', (263, 268)) ('S', 'Chemical', 'MESH:D013455', (190, 191)) ('associated', 'Reg', (310, 320)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('tumor', 'Disease', (263, 268)) ('solid growth pattern', 'CPA', (233, 253)) ('S', 'Chemical', 'MESH:D013455', (277, 278)) ('S', 'Chemical', 'MESH:D013455', (67, 68)) ('SMARCB1', 'Gene', '6598', (277, 284)) ('SMARCB1', 'Gene', (277, 284)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) 106749 32751108 performed miRNA expression analysis and targeted next-generation sequencing mutational profiling on 13 cases of TCRCC: the expression profile of some miRs, such as miR-155 and miR-34a, that were downregulated was clearly different from that observed in PRCC; the gene sequencing showed recurrent mutations of ABL1 and PDGFRA genes, both genes being only rarely mutated in other RCC types. ('miR-34a', 'Gene', '407040', (176, 183)) ('ABL1', 'Gene', '25', (309, 313)) ('PRCC', 'Gene', (253, 257)) ('RCC', 'Disease', (114, 117)) ('RCC', 'Disease', 'MESH:C538614', (378, 381)) ('miR-155', 'Gene', (164, 171)) ('ABL1', 'Gene', (309, 313)) ('RCC', 'Disease', 'MESH:C538614', (114, 117)) ('miR-34a', 'Gene', (176, 183)) ('PDGFRA', 'Gene', '5156', (318, 324)) ('PDGFRA', 'Gene', (318, 324)) ('PRCC', 'Gene', '5546', (253, 257)) ('miR-155', 'Gene', '406947', (164, 171)) ('RCC', 'Disease', (378, 381)) ('RCC', 'Disease', 'MESH:C538614', (254, 257)) ('mutations', 'Var', (296, 305)) ('RCC', 'Disease', (254, 257)) 106756 32751108 Initial studies have shown genetic abnormalities of WT1 gene, Wnt-activating mutations of CTNNB1 and WTX, abnormalities of 11p15 copy number, and methylation. ('11p15', 'Protein', (123, 128)) ('CTNNB1', 'Gene', '1499', (90, 96)) ('genetic abnormalities of WT1', 'Disease', (27, 55)) ('WTX', 'Gene', '139285', (101, 104)) ('genetic abnormalities of WT1', 'Disease', 'MESH:D030342', (27, 55)) ('mutations', 'Var', (77, 86)) ('abnormalities', 'Var', (106, 119)) ('CTNNB1', 'Gene', (90, 96)) ('methylation', 'Var', (146, 157)) ('WTX', 'Gene', (101, 104)) 106757 32751108 Subsequent genetic studies of large cohorts of WT patients have identified new mutations: recurrent mutations of the miRNA-processing gene DROSHA (observed in about 12% of cases) and non-recurrent mutations in other genes of this pathway (DICER1, DGCR8, XPO5, and TARBP2), associated with the downregulation of miRNA expression in a subset of WTs. ('XPO5', 'Gene', '57510', (254, 258)) ('mutations', 'Var', (100, 109)) ('S', 'Chemical', 'MESH:D013455', (0, 1)) ('DGCR8', 'Gene', '54487', (247, 252)) ('S', 'Chemical', 'MESH:D013455', (142, 143)) ('patients', 'Species', '9606', (50, 58)) ('TARBP2', 'Gene', '6895', (264, 270)) ('TARBP2', 'Gene', (264, 270)) ('DGCR8', 'Gene', (247, 252)) ('miRNA expression', 'MPA', (311, 327)) ('DROSHA', 'Gene', '29102', (139, 145)) ('DROSHA', 'Gene', (139, 145)) ('downregulation', 'NegReg', (293, 307)) ('XPO5', 'Gene', (254, 258)) ('DICER1', 'Gene', (239, 245)) ('DICER1', 'Gene', '23405', (239, 245)) ('mutations', 'Var', (79, 88)) 106758 32751108 Recurrent mutations at the level of the homeodomain of SIX1 and SIX2 genes involved in the control of renal development, particularly frequent in WTs with blastemal histology (18% of cases), as well as DROSHA mutations (18% of cases); mutations of MYCN, SMARCA4, and ARID1A. ('MYCN', 'Gene', (248, 252)) ('SMARCA4', 'Gene', (254, 261)) ('SIX2', 'Gene', (64, 68)) ('mutations', 'Var', (235, 244)) ('DROSHA', 'Gene', '29102', (202, 208)) ('men', 'Species', '9606', (115, 118)) ('DROSHA', 'Gene', (202, 208)) ('MYCN', 'Gene', '4613', (248, 252)) ('SIX2', 'Gene', '10736', (64, 68)) ('SMARCA4', 'Gene', '6597', (254, 261)) ('SIX1', 'Gene', (55, 59)) ('SIX1', 'Gene', '6495', (55, 59)) ('mutations', 'Var', (10, 19)) ('ARID1A', 'Gene', '8289', (267, 273)) ('ARID1A', 'Gene', (267, 273)) 106759 32751108 The most recurrent gene mutations occurring in high-risk subgroups of WT patients subdivided into those exhibiting a favorable histology (FHWT) that subsequently relapsed and those with diffuse anaplasia (DAWT) were defined: recurrent DROSHA, DGCR8, and SIX1/2 homeodomain genes were observed in FHWT; recurrent TP53 alterations are observed in DAWT, with 48% of cases showing TP53 mutations, 11% copy loss without mutation: patients with stage III/IV DAWTs had lower relapse and death rates than those with TP53 abnormalities. ('mutations', 'Var', (382, 391)) ('DROSHA', 'Gene', '29102', (235, 241)) ('TP53', 'Gene', (377, 381)) ('death', 'Disease', 'MESH:D003643', (480, 485)) ('TP53', 'Gene', '7157', (508, 512)) ('DROSHA', 'Gene', (235, 241)) ('DGCR8', 'Gene', (243, 248)) ('SIX1/2', 'Gene', (254, 260)) ('patients', 'Species', '9606', (425, 433)) ('DGCR8', 'Gene', '54487', (243, 248)) ('lower', 'NegReg', (462, 467)) ('TP53', 'Gene', (312, 316)) ('FH', 'Gene', '2271', (296, 298)) ('FH', 'Gene', '2271', (138, 140)) ('patients', 'Species', '9606', (73, 81)) ('TP53', 'Gene', '7157', (377, 381)) ('death', 'Disease', (480, 485)) ('TP53', 'Gene', (508, 512)) ('SIX1/2', 'Gene', '6495;10736', (254, 260)) ('TP53', 'Gene', '7157', (312, 316)) 106760 32751108 Another study showed the frequent occurrence of insertion/deletion MLTT1 (a gene known to be involved in transcriptional elongation during early development) mutations, associated with altered binding to acetylated histone tails: these tumors show an increase in MYC gene expression and HOX genes dysregulation. ('MYC', 'Gene', '4609', (263, 266)) ('dysregulation', 'MPA', (297, 310)) ('expression', 'MPA', (272, 282)) ('HOX genes', 'Gene', (287, 296)) ('men', 'Species', '9606', (152, 155)) ('insertion/deletion', 'Var', (48, 66)) ('tumors', 'Phenotype', 'HP:0002664', (236, 242)) ('tumor', 'Phenotype', 'HP:0002664', (236, 241)) ('MYC', 'Gene', (263, 266)) ('increase', 'PosReg', (251, 259)) ('tumors', 'Disease', (236, 242)) ('MLTT1', 'Gene', (67, 72)) ('mutations', 'Var', (158, 167)) ('tumors', 'Disease', 'MESH:D009369', (236, 242)) 106762 32751108 In addition to genes previously found to be mutated in WTs (WT1, CTNNB1, AMER1, DROSHA, DGCR8, XPO5, DICER1, SIX1, SIX2, MLLT1, MYCN, and TP53), this study discovered as frequently mutated in WTs also BCOR, BCORL1, NONO, MAX, COL6A3, ASXL1, MAP3K4, and ARID1A genes. ('WT1', 'Gene', (60, 63)) ('BCORL1', 'Gene', (207, 213)) ('ARID1A', 'Gene', '8289', (253, 259)) ('BCOR', 'Gene', (201, 205)) ('AMER1', 'Gene', (73, 78)) ('MYCN', 'Gene', '4613', (128, 132)) ('ASXL1', 'Gene', '171023', (234, 239)) ('BCOR', 'Gene', '54880', (207, 211)) ('XPO5', 'Gene', (95, 99)) ('DICER1', 'Gene', '23405', (101, 107)) ('WT1', 'Gene', '7490', (60, 63)) ('mutated', 'Var', (181, 188)) ('SIX2', 'Gene', (115, 119)) ('CTNNB1', 'Gene', '1499', (65, 71)) ('COL6A3', 'Gene', (226, 232)) ('BCOR', 'Gene', (207, 211)) ('MAP3K4', 'Gene', '4216', (241, 247)) ('COL6A3', 'Gene', '1293', (226, 232)) ('NONO', 'Gene', (215, 219)) ('TP53', 'Gene', (138, 142)) ('MLLT1', 'Gene', '4298', (121, 126)) ('DICER1', 'Gene', (101, 107)) ('AMER1', 'Gene', '139285', (73, 78)) ('ASXL1', 'Gene', (234, 239)) ('DGCR8', 'Gene', (88, 93)) ('SIX1', 'Gene', '6495', (109, 113)) ('MAP3K4', 'Gene', (241, 247)) ('MYCN', 'Gene', (128, 132)) ('DGCR8', 'Gene', '54487', (88, 93)) ('MAX', 'Gene', (221, 224)) ('XPO5', 'Gene', '57510', (95, 99)) ('DROSHA', 'Gene', '29102', (80, 86)) ('CTNNB1', 'Gene', (65, 71)) ('DROSHA', 'Gene', (80, 86)) ('SIX1', 'Gene', (109, 113)) ('ARID1A', 'Gene', (253, 259)) ('SIX2', 'Gene', '10736', (115, 119)) ('TP53', 'Gene', '7157', (138, 142)) ('NONO', 'Gene', '4841', (215, 219)) ('BCOR', 'Gene', '54880', (201, 205)) ('MLLT1', 'Gene', (121, 126)) ('BCORL1', 'Gene', '63035', (207, 213)) 106763 32751108 TP53 was the most frequently mutated gene in the discovery set, enriched in DAWT histology; importantly, mutations in TP53 were significantly associated with DAWT histology (56/118 DAWT and 9/533 FHWT); frequently, TP53 mutations display a lower allelic fraction, consistent with the role of TP53 as a secondary mutation in WTs. ('TP53', 'Gene', '7157', (0, 4)) ('FH', 'Gene', '2271', (196, 198)) ('TP53', 'Gene', (0, 4)) ('TP53', 'Gene', '7157', (292, 296)) ('TP53', 'Gene', (292, 296)) ('lower', 'NegReg', (240, 245)) ('allelic fraction', 'MPA', (246, 262)) ('TP53', 'Gene', '7157', (215, 219)) ('TP53', 'Gene', '7157', (118, 122)) ('TP53', 'Gene', (118, 122)) ('associated', 'Reg', (142, 152)) ('mutations', 'Var', (105, 114)) ('TP53', 'Gene', (215, 219)) ('mutations', 'Var', (220, 229)) 106764 32751108 CTNNB1 was the most frequently mutated gene with global frequency of 13.5%; CTNNB1 mutations were much more frequent among FHWT (16%) than among DWAT (1.7%); analysis of co-occurrence mutations showed a significant co-occurrence of CTNNB1 mutations WT1 (about 39% of tumors with CTNNB1 mutations also had WT1 mutations and about 74% of tumors with WT1 mutations also had CTNNB1 mutations). ('WT1', 'Gene', (305, 308)) ('CTNNB1', 'Gene', (371, 377)) ('tumors', 'Disease', (336, 342)) ('CTNNB1', 'Gene', '1499', (232, 238)) ('CTNNB1', 'Gene', (76, 82)) ('tumors', 'Phenotype', 'HP:0002664', (267, 273)) ('WT1', 'Gene', '7490', (305, 308)) ('CTNNB1', 'Gene', '1499', (279, 285)) ('WT1', 'Gene', (249, 252)) ('mutations', 'Var', (286, 295)) ('tumors', 'Disease', 'MESH:D009369', (336, 342)) ('tumor', 'Phenotype', 'HP:0002664', (267, 272)) ('WT1', 'Gene', '7490', (249, 252)) ('tumors', 'Disease', (267, 273)) ('CTNNB1', 'Gene', (232, 238)) ('FH', 'Gene', '2271', (123, 125)) ('CTNNB1', 'Gene', '1499', (0, 6)) ('CTNNB1', 'Gene', (279, 285)) ('tumor', 'Phenotype', 'HP:0002664', (336, 341)) ('CTNNB1', 'Gene', '1499', (371, 377)) ('tumors', 'Disease', 'MESH:D009369', (267, 273)) ('WT1', 'Gene', (348, 351)) ('CTNNB1', 'Gene', '1499', (76, 82)) ('tumors', 'Phenotype', 'HP:0002664', (336, 342)) ('CTNNB1', 'Gene', (0, 6)) ('WT1', 'Gene', '7490', (348, 351)) 106765 32751108 A significant co-occurrence was also observed between DROSHA and SIX1/SIX2 mutations (15% of tumors with DROSHA mutations also had mutations in SIX1 or SIX2, and 23% tumors with SIX1 or SIX2 mutations also had DROSHA mutations). ('DROSHA', 'Gene', '29102', (54, 60)) ('SIX2', 'Gene', '10736', (152, 156)) ('tumor', 'Phenotype', 'HP:0002664', (166, 171)) ('DROSHA', 'Gene', (54, 60)) ('mutations', 'Var', (112, 121)) ('SIX1', 'Gene', '6495', (178, 182)) ('SIX1', 'Gene', '6495', (65, 69)) ('tumors', 'Phenotype', 'HP:0002664', (166, 172)) ('SIX2', 'Gene', (186, 190)) ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('SIX1', 'Gene', (65, 69)) ('SIX1', 'Gene', '6495', (144, 148)) ('DROSHA', 'Gene', '29102', (210, 216)) ('tumors', 'Phenotype', 'HP:0002664', (93, 99)) ('SIX1', 'Gene', (178, 182)) ('DROSHA', 'Gene', (210, 216)) ('tumors', 'Disease', (166, 172)) ('DROSHA', 'Gene', '29102', (105, 111)) ('SIX2', 'Gene', (152, 156)) ('DROSHA', 'Gene', (105, 111)) ('SIX2', 'Gene', '10736', (70, 74)) ('SIX1', 'Gene', (144, 148)) ('tumors', 'Disease', (93, 99)) ('tumors', 'Disease', 'MESH:D009369', (166, 172)) ('mutations', 'Var', (131, 140)) ('SIX2', 'Gene', '10736', (186, 190)) ('tumors', 'Disease', 'MESH:D009369', (93, 99)) ('SIX2', 'Gene', (70, 74)) 106766 32751108 At the level of CNAs, WTs are characterized by gains and losses of entire chromosomes or chromosomal arms, such as gains of 1q, 6, and 12 and loss of 4q, 16q, 17p, 14, 11, and 22; gain of 1q was shown in about 48% of cases; gain of 1q was not concurrent with any recurrent mutation, suggesting a possible role as a secondary event; amplification of 2p24 including MYCN locus, was found in 11.5% of FHWTs and 25.5% DAWTs; loss of 17p correlated with TP53 mutations, as well as loss of 4q and 14q. ('loss of 17p', 'Var', (421, 432)) ('FHWTs', 'Disease', 'None', (398, 403)) ('MYCN', 'Gene', (364, 368)) ('MYCN', 'Gene', '4613', (364, 368)) ('FHWTs', 'Disease', (398, 403)) ('TP53', 'Gene', '7157', (449, 453)) ('amp', 'Chemical', 'MESH:D000249', (332, 335)) ('loss', 'Var', (476, 480)) ('TP53', 'Gene', (449, 453)) ('mutations', 'Var', (454, 463)) 106768 32751108 Chromosomal loss at 9q22 caused recurrent loss of MIRLET7A gene family: MIRLET7A1 (5%), MIRLET7A2 (18%), MIRLET7A3 (/21%). ('Chromosomal loss', 'Var', (0, 16)) ('MIRLET7A3', 'Gene', (105, 114)) ('MIRLET7A2', 'Gene', '406882', (88, 97)) ('MIRLET7A1', 'Gene', (72, 81)) ('MIRLET7A gene family', 'Gene', (50, 70)) ('MIRLET7A3', 'Gene', '406883', (105, 114)) ('MIRLET7A1', 'Gene', '406881', (72, 81)) ('MIRLET7A2', 'Gene', (88, 97)) ('loss', 'NegReg', (42, 46)) 106770 32751108 This study showed that WTs: (i) Derive from the cooperation of multiple genetic events; (ii) display different genetic alterations, associated with differential gene expression profiles; (iii) have multiple driver genes, the majority being altered in <5% of tumors; (iv) display mutations at the level of genes with common functions, mainly represented by genes involved in early renal development or epigenetic regulation. ('tumor', 'Phenotype', 'HP:0002664', (258, 263)) ('mutations', 'Var', (279, 288)) ('tumors', 'Phenotype', 'HP:0002664', (258, 264)) ('tumors', 'Disease', (258, 264)) ('men', 'Species', '9606', (393, 396)) ('tumors', 'Disease', 'MESH:D009369', (258, 264)) 106773 32751108 Using human and mouse cellular models, evidence was provided that ENL mutants induce gene expression changes that promote a premalignant condition and in nephrogenesis models induce the formation of undifferentiated cellular structures resembling those observed in WTs. ('induce', 'Reg', (175, 181)) ('human', 'Species', '9606', (6, 11)) ('mutants', 'Var', (70, 77)) ('gene expression changes', 'MPA', (85, 108)) ('ENL', 'Gene', (66, 69)) ('formation', 'CPA', (186, 195)) ('mouse', 'Species', '10090', (16, 21)) ('premalignant condition', 'Disease', (124, 146)) ('nephrogenesis', 'Disease', (154, 167)) ('nephrogenesis', 'Disease', 'None', (154, 167)) ('promote', 'PosReg', (114, 121)) 106774 32751108 At mechanistic level, these ENL mutations exhibit a function similar to their normal counterpart, occupying similar target genomic loci, but with a clearly increased occupancy, leading to a pronounced increase in the recruitment and activity of transcription elongation machinery, thus enforcing the rate and the level of gene transcription of these target genes. ('men', 'Species', '9606', (224, 227)) ('activity', 'MPA', (233, 241)) ('increase', 'PosReg', (201, 209)) ('transcription elongation', 'CPA', (245, 269)) ('increased', 'PosReg', (156, 165)) ('mutations', 'Var', (32, 41)) ('ENL', 'Gene', (28, 31)) ('recruitment', 'MPA', (217, 228)) 106778 32751108 To perform this analysis, these investigators initially investigated some children with unilateral WTs and sampled tumor, blood and normal kidney tissue specimens from the same individuals: in two of the three cases analyzed, mosaic mutations in normal kidneys that were present in the corresponding tumor, but absent from blood were observed. ('tumor', 'Phenotype', 'HP:0002664', (300, 305)) ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('tumor', 'Disease', (300, 305)) ('tumor', 'Disease', (115, 120)) ('children', 'Species', '9606', (74, 82)) ('mutations', 'Var', (233, 242)) ('tumor', 'Disease', 'MESH:D009369', (300, 305)) ('amp', 'Chemical', 'MESH:D000249', (108, 111)) ('men', 'Species', '9606', (158, 161)) ('tumor', 'Disease', 'MESH:D009369', (115, 120)) 106783 32751108 sRCC is not a distinct RCC subtype, but represents a shift in the epithelial differentiation to mesenchymal differentiation in the context of pre-existing RCC; this conclusion is supported by two lines of observations: both an epithelial and a mesenchymal component is present in these tumors; both the epithelial and sarcomatoid components share the large majority of gene mutations, copy number alterations, and X-chromosome inactivation patterns. ('RCC', 'Disease', (155, 158)) ('sarcomatoid', 'Disease', 'MESH:C538614', (318, 329)) ('copy number alterations', 'Var', (385, 408)) ('tumor', 'Phenotype', 'HP:0002664', (286, 291)) ('RCC', 'Disease', 'MESH:C538614', (1, 4)) ('gene mutations', 'Var', (369, 383)) ('tumors', 'Disease', (286, 292)) ('RCC', 'Disease', (1, 4)) ('tumors', 'Disease', 'MESH:D009369', (286, 292)) ('RCC', 'Disease', 'MESH:C538614', (23, 26)) ('tumors', 'Phenotype', 'HP:0002664', (286, 292)) ('RCC', 'Disease', (23, 26)) ('sarcomatoid', 'Disease', (318, 329)) ('RCC', 'Disease', 'MESH:C538614', (155, 158)) 106787 32751108 The most recurrent mutations in these patients involved VHL (72%), chromatin remodeling genes SETD2 (40%), PBMR1 (34%) and BAP1 (26%), TERT promoter (18%), PTEN (14%), TSC2 (12%), and Hippo pathway members NF2 (10%) and FAT1 (10%). ('VHL', 'Gene', (56, 59)) ('TERT', 'Gene', '7015', (135, 139)) ('PTEN', 'Gene', (156, 160)) ('TSC2', 'Gene', (168, 172)) ('NF2', 'Gene', '4771', (206, 209)) ('patients', 'Species', '9606', (38, 46)) ('NF2', 'Gene', (206, 209)) ('VHL', 'Gene', '7428', (56, 59)) ('PTEN', 'Gene', '5728', (156, 160)) ('PBMR1', 'Gene', (107, 112)) ('BAP1', 'Gene', '8314', (123, 127)) ('FAT1', 'Gene', '2195', (220, 224)) ('FAT1', 'Gene', (220, 224)) ('BAP1', 'Gene', (123, 127)) ('TSC2', 'Gene', '7249', (168, 172)) ('SETD2', 'Gene', (94, 99)) ('mutations', 'Var', (19, 28)) ('SETD2', 'Gene', '29072', (94, 99)) ('TERT', 'Gene', (135, 139)) 106789 32751108 It is of interest to note that concerning the chromatin remodeling genes, in addition to SETD2, PBRM1, and BAP1 mutations, were observed also mutations of ARID1A and ARID1B genes and of several genes acting as epigenetic regulators. ('mutations', 'Var', (142, 151)) ('BAP1', 'Gene', '8314', (107, 111)) ('SETD2', 'Gene', '29072', (89, 94)) ('BAP1', 'Gene', (107, 111)) ('ARID1B', 'Gene', (166, 172)) ('mutations', 'Var', (112, 121)) ('SETD2', 'Gene', (89, 94)) ('ARID1A', 'Gene', '8289', (155, 161)) ('PBRM1', 'Gene', (96, 101)) ('ARID1A', 'Gene', (155, 161)) ('PBRM1', 'Gene', '55193', (96, 101)) ('ARID1B', 'Gene', '57492', (166, 172)) 106790 32751108 In 23 patients the genomic profiles of paired epithelial and mesenchymal components were compared, showing that: SETD2 and TERT alterations markedly differed between the two components; one tumor harbored NF2 and CDKN2A mutations exclusively in the mesenchymal component; two tumors harbored TP53 mutations exclusively in the mesenchymal component. ('TP53', 'Gene', (292, 296)) ('tumor', 'Phenotype', 'HP:0002664', (190, 195)) ('tumor', 'Phenotype', 'HP:0002664', (276, 281)) ('patients', 'Species', '9606', (6, 14)) ('tumors', 'Phenotype', 'HP:0002664', (276, 282)) ('NF2', 'Gene', '4771', (205, 208)) ('TERT', 'Gene', (123, 127)) ('TERT', 'Gene', '7015', (123, 127)) ('SETD2', 'Gene', (113, 118)) ('NF2', 'Gene', (205, 208)) ('mutations', 'Var', (220, 229)) ('tumors', 'Disease', (276, 282)) ('TP53', 'Gene', '7157', (292, 296)) ('SETD2', 'Gene', '29072', (113, 118)) ('CDKN2A', 'Gene', (213, 219)) ('tumor', 'Disease', (276, 281)) ('tumor', 'Disease', (190, 195)) ('tumors', 'Disease', 'MESH:D009369', (276, 282)) ('tumor', 'Disease', 'MESH:D009369', (276, 281)) ('tumor', 'Disease', 'MESH:D009369', (190, 195)) ('CDKN2A', 'Gene', '1029', (213, 219)) 106792 32751108 Hippo-mutant sRCCs showed YAP/TAZ upregulation, thus showing that Hippo pathway is activated in these tumors; furthermore, Hippo pathway inhibition or restoration of normal NF2 expression inhibited the proliferation and invasiveness of sRCC. ('TAZ', 'Gene', '6901', (30, 33)) ('RCC', 'Disease', (14, 17)) ('TAZ', 'Gene', (30, 33)) ('inhibited', 'NegReg', (188, 197)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('expression', 'MPA', (177, 187)) ('NF2', 'Gene', '4771', (173, 176)) ('RCC', 'Disease', 'MESH:C538614', (14, 17)) ('tumors', 'Phenotype', 'HP:0002664', (102, 108)) ('NF2', 'Gene', (173, 176)) ('Hippo pathway', 'Pathway', (123, 136)) ('tumors', 'Disease', (102, 108)) ('YAP', 'Gene', '55249', (26, 29)) ('RCC', 'Disease', (237, 240)) ('YAP', 'Gene', (26, 29)) ('proliferation', 'CPA', (202, 215)) ('tumors', 'Disease', 'MESH:D009369', (102, 108)) ('Hippo-mutant', 'Var', (0, 12)) ('inhibition', 'NegReg', (137, 147)) ('RCC', 'Disease', 'MESH:C538614', (237, 240)) ('upregulation', 'PosReg', (34, 46)) 106793 32751108 Ito and coworkers reported a detailed analysis on CNAs occurring in 17 sRCCs, showing that these tumors are associated with a high rate of chromosomal abnormalities involving losses of 9q, 15q, 18p/q, and 22q and gains of 1q and 8q occurring at significantly higher frequencies compared to the corresponding non-sarcomatoid RCCs. ('RCC', 'Disease', 'MESH:C538614', (324, 327)) ('RCC', 'Disease', 'MESH:C538614', (72, 75)) ('chromosomal abnormalities', 'Disease', 'MESH:D002869', (139, 164)) ('RCC', 'Disease', (72, 75)) ('non-sarcomatoid', 'Disease', 'MESH:C538614', (308, 323)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('18p/q', 'Var', (194, 199)) ('RCC', 'Disease', (324, 327)) ('gains', 'PosReg', (213, 218)) ('sarcomatoid RCCs', 'Disease', 'MESH:C538614', (312, 328)) ('tumors', 'Disease', (97, 103)) ('chromosomal abnormalities', 'Disease', (139, 164)) ('tumors', 'Phenotype', 'HP:0002664', (97, 103)) ('losses', 'Var', (175, 181)) ('sarcomatoid RCCs', 'Disease', (312, 328)) ('tumors', 'Disease', 'MESH:D009369', (97, 103)) ('non-sarcomatoid', 'Disease', (308, 323)) ('15q', 'Var', (189, 192)) 106796 32751108 reported the extensive molecular characterization of 62 primary high-grade uRCCs: sequencing analysis showed recurrent mutations at the level of 29 genes, the most frequent being NF2 (18%), SETD2 (18%), BAP1 (13%), KMT2C (10%), MTOR (8%), PTEN (7%), and TSC1 (7%); integrated molecular analyses showed the existence of a subset (26% of uRCCs) characterized by NF2 loss, dysregulated Hippo-YAP pathway and poor survival and of another subset (21% of uRCCs), characterized by recurrent mutations of MTOR, TSC1, TSC2, or PTEN, hyperactive MT OR signaling and a better clinical outcome. ('RCC', 'Disease', 'MESH:C538614', (450, 453)) ('mutations', 'Var', (484, 493)) ('RCC', 'Disease', (337, 340)) ('RCC', 'Disease', (76, 79)) ('PTEN', 'Gene', (518, 522)) ('TSC1', 'Gene', (503, 507)) ('SETD2', 'Gene', (190, 195)) ('BAP1', 'Gene', '8314', (203, 207)) ('RCC', 'Disease', 'MESH:C538614', (337, 340)) ('RCC', 'Disease', 'MESH:C538614', (76, 79)) ('TSC2', 'Gene', '7249', (509, 513)) ('TSC1', 'Gene', '7248', (503, 507)) ('dysregulated', 'Reg', (370, 382)) ('KMT2C', 'Gene', (215, 220)) ('KMT2C', 'Gene', '58508', (215, 220)) ('poor', 'NegReg', (405, 409)) ('PTEN', 'Gene', '5728', (518, 522)) ('NF2', 'Gene', '4771', (179, 182)) ('PTEN', 'Gene', (239, 243)) ('TSC1', 'Gene', (254, 258)) ('YAP', 'Gene', '55249', (389, 392)) ('SETD2', 'Gene', '29072', (190, 195)) ('NF2', 'Gene', (179, 182)) ('TSC2', 'Gene', (509, 513)) ('YAP', 'Gene', (389, 392)) ('BAP1', 'Gene', (203, 207)) ('hyperactive MT', 'Disease', (524, 538)) ('MTOR', 'Gene', (228, 232)) ('hyperactive MT', 'Disease', 'MESH:D006948', (524, 538)) ('MTOR', 'Gene', (497, 501)) ('TSC1', 'Gene', '7248', (254, 258)) ('MTOR', 'Gene', '2475', (228, 232)) ('NF2', 'Gene', '4771', (360, 363)) ('MTOR', 'Gene', '2475', (497, 501)) ('PTEN', 'Gene', '5728', (239, 243)) ('RCC', 'Disease', (450, 453)) ('loss', 'NegReg', (364, 368)) ('NF2', 'Gene', (360, 363)) 106797 32751108 The frequent NF2 abnormalities and the consequent dysregulation of the Hippo pathway represent a common feature of both sRCC and uRCC and support the targeting of this pathway for the therapy of a subset of these aggressive RCCs. ('RCC', 'Disease', (224, 227)) ('RCC', 'Disease', 'MESH:C538614', (121, 124)) ('NF2', 'Gene', '4771', (13, 16)) ('RCC', 'Disease', (121, 124)) ('Hippo pathway', 'Pathway', (71, 84)) ('aggressive RCCs', 'Disease', (213, 228)) ('aggressive RCCs', 'Disease', 'MESH:D001523', (213, 228)) ('dysregulation', 'Reg', (50, 63)) ('RCC', 'Disease', (130, 133)) ('RCC', 'Disease', 'MESH:C538614', (130, 133)) ('NF2', 'Gene', (13, 16)) ('abnormalities', 'Var', (17, 30)) ('RCC', 'Disease', 'MESH:C538614', (224, 227)) 106808 32751108 These various types of RCC have been defined on the basis of their histological appearance, the presence of distinct driver mutations, varying clinical course, and different responses to therapy. ('RCC', 'Disease', 'MESH:C538614', (23, 26)) ('RCC', 'Disease', (23, 26)) ('mutations', 'Var', (124, 133)) 106813 32751108 Thus, molecular studies in CCRCC have defined the dysregulation of the VHL gene as an almost universal initial, founding event, followed by different types of additional genetic events involving PBRM1, KDM5C, SETD2, or BAP1 that differentially dictate disease progression and aggressiveness. ('aggressiveness', 'Disease', (276, 290)) ('KDM5C', 'Gene', '8242', (202, 207)) ('aggressiveness', 'Phenotype', 'HP:0000718', (276, 290)) ('BAP1', 'Gene', (219, 223)) ('VHL', 'Gene', (71, 74)) ('SETD2', 'Gene', '29072', (209, 214)) ('PBRM1', 'Gene', (195, 200)) ('RCC', 'Disease', (29, 32)) ('PBRM1', 'Gene', '55193', (195, 200)) ('VHL', 'Gene', '7428', (71, 74)) ('RCC', 'Disease', 'MESH:C538614', (29, 32)) ('SETD2', 'Gene', (209, 214)) ('aggressiveness', 'Disease', 'MESH:D001523', (276, 290)) ('dictate', 'Reg', (244, 251)) ('dysregulation', 'Var', (50, 63)) ('KDM5C', 'Gene', (202, 207)) ('BAP1', 'Gene', '8314', (219, 223)) 106814 32751108 CCRCC tumors with PBRM1 mutations respond to targeted therapy differently than tumors with BAP1 mutations. ('BAP1', 'Gene', (91, 95)) ('CCRCC tumors', 'Disease', 'MESH:D009369', (0, 12)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('CCRCC tumors', 'Disease', (0, 12)) ('PBRM1', 'Gene', (18, 23)) ('tumors', 'Disease', (6, 12)) ('tumors', 'Disease', (79, 85)) ('tumors', 'Disease', 'MESH:D009369', (6, 12)) ('BAP1', 'Gene', '8314', (91, 95)) ('tumors', 'Disease', 'MESH:D009369', (79, 85)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('PBRM1', 'Gene', '55193', (18, 23)) ('mutations', 'Var', (24, 33)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) 106823 32751108 The rationale for their use was related to the very frequent VHL alterations observed in RCCs and responsible for activation of hypoxia signaling pathway in these tumors. ('activation', 'PosReg', (114, 124)) ('alterations', 'Var', (65, 76)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('RCC', 'Disease', (89, 92)) ('tumors', 'Disease', (163, 169)) ('VHL', 'Gene', (61, 64)) ('hypoxia', 'Disease', 'MESH:D000860', (128, 135)) ('RCC', 'Disease', 'MESH:C538614', (89, 92)) ('tumors', 'Disease', 'MESH:D009369', (163, 169)) ('tumors', 'Phenotype', 'HP:0002664', (163, 169)) ('VHL', 'Gene', '7428', (61, 64)) ('hypoxia', 'Disease', (128, 135)) 106840 32751108 showed the preliminary results of a phase II study (NCT 03401788) involving the treatment of 61 patients with germline VHL mutant, localized/nonmetastatic CCRCC, common lesions outside the kidney (non-RCC tumors such as hemangioblastomas (80%) and pancreatic lesions (50%)); about 28% of the patients displayed objective responses and about 87% of patients showed decrease in the size of target lesions. ('patients', 'Species', '9606', (348, 356)) ('RCC tumors', 'Disease', (201, 211)) ('VHL', 'Gene', '7428', (119, 122)) ('decrease', 'NegReg', (364, 372)) ('RCC tumors', 'Disease', 'MESH:C538614', (201, 211)) ('RCC', 'Disease', 'MESH:C538614', (157, 160)) ('patients', 'Species', '9606', (292, 300)) ('tumors', 'Phenotype', 'HP:0002664', (205, 211)) ('RCC', 'Disease', (201, 204)) ('hemangioblastomas', 'Disease', (220, 237)) ('pancreatic lesions', 'Disease', (248, 266)) ('germline', 'Var', (110, 118)) ('tumor', 'Phenotype', 'HP:0002664', (205, 210)) ('hemangioblastomas', 'Disease', 'MESH:D018325', (220, 237)) ('pancreatic lesions', 'Disease', 'MESH:D010195', (248, 266)) ('RCC', 'Disease', 'MESH:C538614', (201, 204)) ('men', 'Species', '9606', (85, 88)) ('patients', 'Species', '9606', (96, 104)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (220, 236)) ('VHL', 'Gene', (119, 122)) ('RCC', 'Disease', (157, 160)) ('mutant', 'Var', (123, 129)) 106852 32252631 Resecting a PPGL is a high-risk surgical procedure, especially for patients with heart issues. ('PPGL', 'Chemical', '-', (12, 16)) ('Resecting', 'Var', (0, 9)) ('heart issues', 'Disease', (81, 93)) ('patients', 'Species', '9606', (67, 75)) 106872 32252631 Adrenergic blockade was accompanied by a high-sodium diet (5000 mg per day) and generous fluid intake (2.5 l per day). ('sodium', 'Chemical', 'MESH:D012964', (46, 52)) ('Adrenergic blockade', 'Protein', (0, 19)) ('5000', 'Var', (59, 63)) ('high-sodium diet', 'Phenotype', 'HP:0003228', (41, 57)) 106903 32252631 Patients with germline SDHB gene mutations less commonly develop multiple tumours. ('tumours', 'Phenotype', 'HP:0002664', (74, 81)) ('SDHB', 'Gene', '6390', (23, 27)) ('tumours', 'Disease', 'MESH:D009369', (74, 81)) ('mutations', 'Var', (33, 42)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', (23, 27)) ('tumours', 'Disease', (74, 81)) ('multiple', 'Disease', (65, 73)) ('tumour', 'Phenotype', 'HP:0002664', (74, 80)) 106913 32252631 Vaidya and her colleagues reported that the high frequency (80%) of mutations in EPAS1 in patients with cyanotic CHDs contrasts with rates of only 5 to 6% in cohorts of unselected patients with PPGLs. ('EPAS1', 'Gene', (81, 86)) ('cyanotic CHDs', 'Disease', (104, 117)) ('CHD', 'Phenotype', 'HP:0001627', (113, 116)) ('cyanotic CHDs', 'Disease', 'None', (104, 117)) ('mutations', 'Var', (68, 77)) ('patients', 'Species', '9606', (90, 98)) ('EPAS1', 'Gene', '2034', (81, 86)) ('patients', 'Species', '9606', (180, 188)) ('PPGLs', 'Chemical', '-', (194, 199)) 106917 32252631 Although the patient did not develop true hypoxemia, cluster 1 genetic mutations could result in the aberrant and constitutive activation of HIFs even under normal levels of oxygen. ('oxygen', 'Chemical', 'MESH:D010100', (174, 180)) ('HIFs', 'Disease', (141, 145)) ('patient', 'Species', '9606', (13, 20)) ('hypoxemia', 'Disease', 'MESH:D000860', (42, 51)) ('hypoxemia', 'Disease', (42, 51)) ('hypoxemia', 'Phenotype', 'HP:0012418', (42, 51)) ('genetic mutations', 'Var', (63, 80)) ('result in', 'Reg', (87, 96)) ('activation', 'PosReg', (127, 137)) ('cluster 1', 'Gene', (53, 62)) ('HIFs', 'Disease', 'None', (141, 145)) 106925 32252631 In addition, patients with L-TGA are at increased risk for AV heart block and heart failure as adults due to a progressive decline in morphologic right ventricular function. ('heart block', 'Phenotype', 'HP:0012722', (62, 73)) ('L-TGA', 'Var', (27, 32)) ('patients', 'Species', '9606', (13, 21)) ('heart failure', 'Disease', 'MESH:D006333', (78, 91)) ('AV heart block', 'Disease', (59, 73)) ('morphologic right ventricular function', 'MPA', (134, 172)) ('heart failure', 'Phenotype', 'HP:0001635', (78, 91)) ('heart failure', 'Disease', (78, 91)) ('decline', 'NegReg', (123, 130)) ('AV heart block', 'Disease', 'MESH:D054537', (59, 73)) 106927 32252631 By 45 years of age, > 30% of patients with isolated L-TGA develop clinical congestive heart failure, although there were no signs of catecholamine-induced cardiomyopathy in this patient. ('patient', 'Species', '9606', (29, 36)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (155, 169)) ('patients', 'Species', '9606', (29, 37)) ('congestive heart failure', 'Disease', (75, 99)) ('congestive heart failure', 'Disease', 'MESH:D006333', (75, 99)) ('develop', 'Reg', (58, 65)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (155, 169)) ('heart failure', 'Phenotype', 'HP:0001635', (86, 99)) ('congestive heart failure', 'Phenotype', 'HP:0001635', (75, 99)) ('patient', 'Species', '9606', (178, 185)) ('cardiomyopathy', 'Disease', (155, 169)) ('isolated L-TGA', 'Var', (43, 57)) ('catecholamine', 'Chemical', 'MESH:D002395', (133, 146)) 106944 31052272 In parallel, 25 canine PPGLs were screened for mutations in SDHB and SDHD by Sanger sequencing. ('PPGLs', 'Chemical', '-', (23, 28)) ('canine', 'Species', '9615', (16, 22)) ('SDHB', 'Gene', (60, 64)) ('mutations', 'Var', (47, 56)) ('PGLs', 'Phenotype', 'HP:0002668', (24, 28)) ('PGL', 'Phenotype', 'HP:0002668', (24, 27)) ('SDHD', 'Gene', (69, 73)) 106947 31052272 Genetic screening of the canine tumors revealed the previously described variants in four cases; SDHB p.Arg38Gln (n = 1) and SDHD p.Lys122Arg (n = 3). ('SDHB', 'Gene', (97, 101)) ('p.Lys122Arg', 'Mutation', 'rs1173999123', (130, 141)) ('p.Arg38Gln', 'Mutation', 'rs199901239', (102, 112)) ('tumors', 'Phenotype', 'HP:0002664', (32, 38)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('p.Arg38Gln', 'Var', (102, 112)) ('tumors', 'Disease', (32, 38)) ('canine', 'Species', '9615', (25, 31)) ('p.Lys122Arg', 'Var', (130, 141)) ('SDHD', 'Gene', (125, 129)) ('tumors', 'Disease', 'MESH:D009369', (32, 38)) 106951 31052272 These tumors occur in the context of several hereditary syndromes, such as Von Hippel Lindau (VHL), Multiple Endocrine Neoplasia type 2, Neurofibromatosis type 1, and the PCC-PGL syndrome, with underlying germline mutations in the VHL, rearranged during transfection (RET), neurofibromin 1 (NF1), and the SDH-genes, respectively. ('SDH', 'Gene', (305, 308)) ('Endocrine Neoplasia', 'Phenotype', 'HP:0100568', (109, 128)) ('Multiple Endocrine Neoplasia type 2', 'Disease', (100, 135)) ('Neurofibromatosis type 1', 'Gene', '480618', (137, 161)) ('PGL', 'Phenotype', 'HP:0002668', (175, 178)) ('Neurofibromatosis', 'Phenotype', 'HP:0001067', (137, 154)) ('RET', 'Gene', '403494', (268, 271)) ('VHL', 'Disease', 'MESH:D006623', (94, 97)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('PCC-PGL syndrome', 'Disease', 'MESH:D010235', (171, 187)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('mutations', 'Var', (214, 223)) ('SDH', 'Gene', '257635', (305, 308)) ('rearranged during transfection', 'Gene', (236, 266)) ('VHL', 'Disease', (231, 234)) ('neurofibromin 1', 'Gene', (274, 289)) ('Von Hippel Lindau', 'Gene', '494000', (75, 92)) ('NF1', 'Gene', (291, 294)) ('tumors', 'Disease', (6, 12)) ('neurofibromin 1', 'Gene', '480618', (274, 289)) ('VHL', 'Disease', (94, 97)) ('NF1', 'Gene', '480618', (291, 294)) ('rearranged during transfection', 'Gene', '403494', (236, 266)) ('Multiple Endocrine Neoplasia type 2', 'Disease', 'MESH:D018813', (100, 135)) ('Neoplasia', 'Phenotype', 'HP:0002664', (119, 128)) ('tumors', 'Disease', 'MESH:D009369', (6, 12)) ('PCC', 'Phenotype', 'HP:0002666', (171, 174)) ('PCC-PGL syndrome', 'Disease', (171, 187)) ('Von Hippel Lindau', 'Gene', (75, 92)) ('Neurofibromatosis type 1', 'Gene', (137, 161)) ('RET', 'Gene', (268, 271)) ('VHL', 'Disease', 'MESH:D006623', (231, 234)) 106952 31052272 Although approximately 10% of PPGL patients, in general, will present with (distant) metastases, this frequency is much higher in patients with succinate dehydrogenase subunit B (SDHB) germline mutations. ('higher', 'PosReg', (120, 126)) ('patients', 'Species', '9606', (130, 138)) ('metastases', 'Disease', (85, 95)) ('germline mutations', 'Var', (185, 203)) ('PPGL', 'Gene', (30, 34)) ('PGL', 'Phenotype', 'HP:0002668', (31, 34)) ('patients', 'Species', '9606', (35, 43)) ('SDHB', 'Gene', (179, 183)) ('metastases', 'Disease', 'MESH:D009362', (85, 95)) 106957 31052272 However, human PPGLs have never been associated with phosphatase and tensin homolog (PTEN) mutations. ('PPGLs', 'Gene', (15, 20)) ('PPGLs', 'Chemical', '-', (15, 20)) ('PGLs', 'Phenotype', 'HP:0002668', (16, 20)) ('human', 'Species', '9606', (9, 14)) ('mutations', 'Var', (91, 100)) ('associated', 'Reg', (37, 47)) ('PTEN', 'Gene', (85, 89)) ('PTEN', 'Gene', '5728', (85, 89)) ('PGL', 'Phenotype', 'HP:0002668', (16, 19)) 106960 31052272 reported genetic screening of eight canine PPGLs and identified four genetic variants that might be potentially pathogenic; one in SDHB (p.Arg38Gln) and three in succinate dehydrogenase subunit D (SDHD; p.Lys122Arg), of which one was somatic. ('PGLs', 'Phenotype', 'HP:0002668', (44, 48)) ('PPGLs', 'Chemical', '-', (43, 48)) ('PGL', 'Phenotype', 'HP:0002668', (44, 47)) ('p.Lys122Arg', 'Var', (203, 214)) ('SDHB', 'Gene', (131, 135)) ('canine', 'Species', '9615', (36, 42)) ('pathogenic', 'Reg', (112, 122)) ('p.Arg38Gln', 'Mutation', 'rs199901239', (137, 147)) ('p.Arg38Gln', 'Var', (137, 147)) ('p.Lys122Arg', 'Mutation', 'rs1173999123', (203, 214)) ('succinate dehydrogenase subunit D', 'Gene', (162, 195)) ('succinate dehydrogenase subunit D', 'Gene', '479438', (162, 195)) 106962 31052272 Since this is the first animal model that presents spontaneously with PPGL that might be related to SDHB and SDHD mutations, we have investigated a relatively large series of canine PPGLs by Sanger sequencing for mutations in these genes. ('PGL', 'Phenotype', 'HP:0002668', (183, 186)) ('PGL', 'Phenotype', 'HP:0002668', (71, 74)) ('mutations', 'Var', (114, 123)) ('canine', 'Species', '9615', (175, 181)) ('PGLs', 'Phenotype', 'HP:0002668', (183, 187)) ('PPGL', 'Disease', (70, 74)) ('PPGLs', 'Chemical', '-', (182, 187)) ('SDHB', 'Gene', (100, 104)) 106968 31052272 Twenty-one PPGLs (20 PCCs and one PGL) with sufficient DNA quality and positive synaptophysin (SYP) or tyrosine hydroxylase (TH) immunohistochemical labeling, were screened for mutations in the SDHB and SDHD genes. ('SYP', 'Gene', (95, 98)) ('TH', 'Gene', '403444', (125, 127)) ('PCCs', 'Phenotype', 'HP:0002666', (21, 25)) ('mutations', 'Var', (177, 186)) ('PGL', 'Phenotype', 'HP:0002668', (34, 37)) ('SDHB', 'Gene', (194, 198)) ('synaptophysin', 'Gene', '612557', (80, 93)) ('tyrosine hydroxylase', 'Gene', (103, 123)) ('tyrosine hydroxylase', 'Gene', '403444', (103, 123)) ('PPGLs', 'Chemical', '-', (11, 16)) ('SYP', 'Gene', '612557', (95, 98)) ('SDHD', 'Gene', (203, 207)) ('PGL', 'Phenotype', 'HP:0002668', (12, 15)) ('PCC', 'Phenotype', 'HP:0002666', (21, 24)) ('synaptophysin', 'Gene', (80, 93)) ('PGLs', 'Phenotype', 'HP:0002668', (12, 16)) 106969 31052272 If a tumor had a non-synonymous variant, the presence of this variant was also investigated in corresponding germline DNA. ('variant', 'Var', (32, 39)) ('non-synonymous variant', 'Var', (17, 39)) ('tumor', 'Disease', 'MESH:D009369', (5, 10)) ('tumor', 'Phenotype', 'HP:0002664', (5, 10)) ('tumor', 'Disease', (5, 10)) 106970 31052272 Three PCCs showed an SDHD (XM_536573) c.365A>G; p.Lys122Arg alteration. ('p.Lys122Arg', 'Mutation', 'rs1173999123', (48, 59)) ('c.365A>G; p.Lys122Arg', 'Var', (38, 59)) ('PCCs', 'Phenotype', 'HP:0002666', (6, 10)) ('p.Lys122Arg', 'Var', (48, 59)) ('c.365A>G', 'Mutation', 'rs757696980', (38, 46)) ('PCC', 'Phenotype', 'HP:0002666', (6, 9)) 106971 31052272 Germline DNA was only available for PCC6 and showed the SDHD variant in a heterozygous fashion, indicating loss of the wild type (WT) SDHD allele in the tumor (Figure 2), which was also confirmed by the loss of heterozygosity analyses for microsatellite markers flanking the SDHD gene (Figure 1B). ('tumor', 'Disease', 'MESH:D009369', (153, 158)) ('loss', 'NegReg', (107, 111)) ('PCC', 'Phenotype', 'HP:0002666', (36, 39)) ('variant', 'Var', (61, 68)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('tumor', 'Disease', (153, 158)) 106972 31052272 PCC19 showed the previously described SDHB (NM_001252217) c.113G>A; p.Arg38Gln alteration, which appeared homozygous in the tumor and corresponding germline DNA of this dog. ('dog', 'Species', '9615', (169, 172)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('c.113G>A', 'Mutation', 'rs143058777', (58, 66)) ('tumor', 'Disease', (124, 129)) ('p.Arg38Gln', 'Mutation', 'rs199901239', (68, 78)) ('PCC', 'Phenotype', 'HP:0002666', (0, 3)) ('c.113G>A; p.Arg38Gln', 'Var', (58, 78)) ('SDHB', 'Gene', (38, 42)) ('tumor', 'Disease', 'MESH:D009369', (124, 129)) 106973 31052272 (Figure 1A) In addition, genetic screening for SDHA mutations was only performed in SDHA immunohistochemically-negative tumor PCC1 (see below Figure 2). ('SDHA', 'Gene', (47, 51)) ('mutations', 'Var', (52, 61)) ('tumor', 'Disease', 'MESH:D009369', (120, 125)) ('tumor', 'Phenotype', 'HP:0002664', (120, 125)) ('PCC', 'Phenotype', 'HP:0002666', (126, 129)) ('tumor', 'Disease', (120, 125)) 106987 31052272 However, patients with SDHB germline mutations have a much higher chance of developing distant metastases. ('patients', 'Species', '9606', (9, 17)) ('metastases', 'Disease', (95, 105)) ('SDHB', 'Gene', (23, 27)) ('germline mutations', 'Var', (28, 46)) ('metastases', 'Disease', 'MESH:D009362', (95, 105)) 106990 31052272 Since PTEN mutations do not play a role in the pathogenesis of human (malignant) PPGL, such models are not the most suitable for the study of human malignant PPGL. ('mutations', 'Var', (11, 20)) ('human', 'Species', '9606', (63, 68)) ('PPGL', 'Disease', (81, 85)) ('PGL', 'Phenotype', 'HP:0002668', (82, 85)) ('human', 'Species', '9606', (142, 147)) ('PGL', 'Phenotype', 'HP:0002668', (159, 162)) ('PTEN', 'Gene', (6, 10)) ('PTEN', 'Gene', '5728', (6, 10)) 106991 31052272 A recent study reported that dogs presenting spontaneously with PPGL had potential pathogenic genetic alterations in SDHB and SDHD. ('genetic alterations', 'Var', (94, 113)) ('SDHB', 'Gene', (117, 121)) ('pathogenic', 'Reg', (83, 93)) ('SDHD', 'Gene', (126, 130)) ('dogs', 'Species', '9615', (29, 33)) ('PGL', 'Phenotype', 'HP:0002668', (65, 68)) 106992 31052272 To investigate these results in an independent and larger series we have screened 25 canine PPGLs for mutations and identified one SDHB and three non-synonymous SDHD genetic alterations, both of which have been described previously. ('PPGLs', 'Chemical', '-', (92, 97)) ('PPGLs', 'Gene', (92, 97)) ('SDHB', 'Gene', (131, 135)) ('canine', 'Species', '9615', (85, 91)) ('mutations', 'Var', (102, 111)) ('PGL', 'Phenotype', 'HP:0002668', (93, 96)) ('PGLs', 'Phenotype', 'HP:0002668', (93, 97)) 106995 31052272 Although there was no germline DNA available for PCC46, the homozygous expression of the SDHD p.Lys122Arg variant in the tumor could be explained by the potential loss of the SDHD wild type, since the SNP array results showed loss of chromosome 5, which includes the SDHD gene. ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('p.Lys122Arg', 'Mutation', 'rs1173999123', (94, 105)) ('tumor', 'Disease', (121, 126)) ('p.Lys122Arg', 'Var', (94, 105)) ('SDHD', 'Gene', (89, 93)) ('PCC', 'Phenotype', 'HP:0002666', (49, 52)) ('tumor', 'Disease', 'MESH:D009369', (121, 126)) 106996 31052272 However, this is only speculation, since we cannot confirm the possibility that the SDHD variant was heterozygous in the germline DNA, and could also be present as a homozygous SDHD p.Lys122Arg or homozygous wild type. ('SDHD', 'Gene', (84, 88)) ('p.Lys122Arg', 'Mutation', 'rs1173999123', (182, 193)) ('p.Lys122Arg', 'Var', (182, 193)) 106997 31052272 This tumor showed the SDHB p.Arg38Gln variant in a homozygous fashion, which was also homozygous in DNA isolated from normal tissue from the same dog. ('dog', 'Species', '9615', (146, 149)) ('tumor', 'Disease', 'MESH:D009369', (5, 10)) ('tumor', 'Phenotype', 'HP:0002664', (5, 10)) ('SDHB', 'Gene', (22, 26)) ('tumor', 'Disease', (5, 10)) ('p.Arg38Gln', 'Var', (27, 37)) ('p.Arg38Gln', 'Mutation', 'rs199901239', (27, 37)) 106998 31052272 Although the SDHB p.Arg38 is a highly conserved amino acid throughout many species, the fruit fly has a Gln at position 38. ('Arg38', 'Chemical', '-', (20, 25)) ('p.Arg38', 'Var', (18, 25)) ('Gln', 'Chemical', 'MESH:D005973', (104, 107)) ('SDHB', 'Gene', (13, 17)) ('Gln at position 38', 'Var', (104, 122)) ('fruit fly', 'Species', '7227', (88, 97)) 107002 31052272 However, since the positive control tissues (normal dog adrenals) showed homogeneous and not granular cytoplasmic labeling, we suspect that the antibody is not suitable for screening for SDH mutations, as in human PPGL, and, therefore, no conclusions can be drawn from the SDHA and SDHB immunohistochemistry. ('dog', 'Species', '9615', (52, 55)) ('PGL', 'Phenotype', 'HP:0002668', (215, 218)) ('SDH', 'Gene', (273, 276)) ('SDH', 'Gene', '257635', (187, 190)) ('SDH', 'Gene', '257635', (282, 285)) ('mutations', 'Var', (191, 200)) ('SDH', 'Gene', '257635', (273, 276)) ('SDH', 'Gene', (187, 190)) ('SDH', 'Gene', (282, 285)) ('human', 'Species', '9606', (208, 213)) 107005 31052272 From the six tumors that showed chromosomal alterations, loss of chromosome 5 was the most frequent alteration (100%). ('tumors', 'Phenotype', 'HP:0002664', (13, 19)) ('tumors', 'Disease', 'MESH:D009369', (13, 19)) ('tumors', 'Disease', (13, 19)) ('loss', 'Var', (57, 61)) ('tumor', 'Phenotype', 'HP:0002664', (13, 18)) 107018 31052272 Since in human PPGL, negative SDHB immunohistochemistry reliably identifies tumors with mutations in SDHA, SDHB, SDHC, or SDHD, we also investigated the immunohistochemical expression of SDHB in the canine PPGLs. ('SDHB', 'Gene', (107, 111)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('mutations', 'Var', (88, 97)) ('SDHA', 'Gene', (101, 105)) ('human', 'Species', '9606', (9, 14)) ('SDHD', 'Gene', (122, 126)) ('tumors', 'Disease', (76, 82)) ('tumors', 'Disease', 'MESH:D009369', (76, 82)) ('PPGLs', 'Chemical', '-', (206, 211)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) ('canine', 'Species', '9615', (199, 205)) ('PGLs', 'Phenotype', 'HP:0002668', (207, 211)) ('SDHC', 'Gene', (113, 117)) ('PGL', 'Phenotype', 'HP:0002668', (207, 210)) ('PGL', 'Phenotype', 'HP:0002668', (16, 19)) 107029 31052272 Although more functional proof is required to classify the pathogenicity for the SDHD p.Lys122Arg variant, our data suggest that this variant could potentially be pathogenic. ('p.Lys122Arg', 'Mutation', 'rs1173999123', (86, 97)) ('p.Lys122Arg', 'Var', (86, 97)) ('pathogenic', 'Reg', (163, 173)) 107030 31052272 Since chromosomal alterations occurred in the dog PPGL at high frequency, affecting chromosomes that are homologous to regions that are also repeatedly lost in human PPGLs, we propose that canine PPGLs are an interesting model for the study of the pathogenesis of human PPGL. ('affecting', 'Reg', (74, 83)) ('PGLs', 'Phenotype', 'HP:0002668', (197, 201)) ('alterations', 'Var', (18, 29)) ('dog', 'Species', '9615', (46, 49)) ('human', 'Species', '9606', (264, 269)) ('PGLs', 'Phenotype', 'HP:0002668', (167, 171)) ('PGL', 'Phenotype', 'HP:0002668', (197, 200)) ('PGL', 'Phenotype', 'HP:0002668', (167, 170)) ('PGL', 'Phenotype', 'HP:0002668', (271, 274)) ('PPGLs', 'Chemical', '-', (196, 201)) ('PGL', 'Phenotype', 'HP:0002668', (51, 54)) ('PPGLs', 'Chemical', '-', (166, 171)) ('human', 'Species', '9606', (160, 165)) ('canine', 'Species', '9615', (189, 195)) 107050 30863766 An analysis of RET porto-oncogene mutation yielded negative results. ('RET', 'Gene', '5979', (15, 18)) ('mutation', 'Var', (34, 42)) ('RET', 'Gene', (15, 18)) 107074 30863766 Analysis of the RET proto-oncogene mutation, von Hippel Lindau (VHL) mutation, SDHB mutation, and SDHD mutation showed negative results. ('RET', 'Gene', (16, 19)) ('von Hippel Lindau', 'Gene', '7428', (45, 62)) ('VHL', 'Disease', 'MESH:D006623', (64, 67)) ('VHL', 'Disease', (64, 67)) ('von Hippel Lindau', 'Gene', (45, 62)) ('RET', 'Gene', '5979', (16, 19)) ('SDHD', 'Gene', '6392', (98, 102)) ('mutation', 'Var', (69, 77)) ('SDHD', 'Gene', (98, 102)) ('SDHB', 'Gene', '6390', (79, 83)) ('SDHB', 'Gene', (79, 83)) ('mutation', 'Var', (84, 92)) 107092 30863766 In head and neck paraganglioma, a mutation of the D subunit of the SDH gene is identified in 50%-94% of cases, while a mutation of the B subunit is identified in 10%-20% of cases. ('neck paraganglioma', 'Disease', (12, 30)) ('identified', 'Reg', (79, 89)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (12, 30)) ('mutation', 'Var', (34, 42)) ('paraganglioma', 'Phenotype', 'HP:0002668', (17, 30)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (3, 30)) ('SDH', 'Gene', (67, 70)) 107176 29747617 reported that Turner syndrome with 45,X/46,X,i(Xq) karyotype was associated with incidentally detected pheochromocytoma. ('pheochromocytoma', 'Disease', 'MESH:D010673', (103, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (103, 119)) ('Turner syndrome', 'Disease', 'MESH:D014424', (14, 29)) ('associated', 'Reg', (65, 75)) ('Turner syndrome', 'Disease', (14, 29)) ('pheochromocytoma', 'Disease', (103, 119)) ('45,X/46,X,i(Xq', 'Var', (35, 49)) 107190 29747617 Genetic testing should be considered in all patients and is strongly indicated in specific patients such as those with unilateral adrenal pheochromocytoma onset at a young age, those with a positive family history of pheochromocytoma and paraganglioma or carriers of tumor susceptibility gene mutations, and those with syndromic features or metastatic disease. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (217, 233)) ('patients', 'Species', '9606', (91, 99)) ('patients', 'Species', '9606', (44, 52)) ('unilateral adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (119, 154)) ('syndromic features', 'Disease', (319, 337)) ('unilateral adrenal pheochromocytoma', 'Disease', (119, 154)) ('tumor', 'Disease', 'MESH:D009369', (267, 272)) ('mutations', 'Var', (293, 302)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (130, 154)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (138, 154)) ('tumor', 'Phenotype', 'HP:0002664', (267, 272)) ('tumor', 'Disease', (267, 272)) ('pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (217, 251)) ('paraganglioma', 'Phenotype', 'HP:0002668', (238, 251)) ('syndromic features', 'Disease', 'MESH:D000013', (319, 337)) 107217 28203490 Conductive hearing loss may be caused by impaction of cerumen, external or internal otitis, cholesteatoma, ossicular chain abnormalities, or tympanic membrane perforation. ('ossicular chain abnormalities', 'Disease', 'MESH:C537142', (107, 136)) ('caused', 'Reg', (31, 37)) ('hearing loss', 'Disease', 'MESH:D034381', (11, 23)) ('ossicular chain abnormalities', 'Phenotype', 'HP:0004452', (107, 136)) ('ossicular chain abnormalities', 'Disease', (107, 136)) ('tympanic membrane perforation', 'Disease', (141, 170)) ('tympanic membrane perforation', 'Phenotype', 'HP:0020123', (141, 170)) ('hearing loss', 'Phenotype', 'HP:0000365', (11, 23)) ('cholesteatoma', 'Disease', (92, 105)) ('internal otitis', 'Disease', (75, 90)) ('cholesteatoma', 'Phenotype', 'HP:0009797', (92, 105)) ('Conductive hearing', 'Phenotype', 'HP:0000405', (0, 18)) ('cholesteatoma', 'Disease', 'MESH:D002781', (92, 105)) ('hearing loss', 'Disease', (11, 23)) ('impaction of cerumen', 'Phenotype', 'HP:0030788', (41, 61)) ('impaction', 'Var', (41, 50)) ('internal otitis', 'Disease', 'MESH:D010031', (75, 90)) 107218 28203490 Sensorineural hearing loss is caused by disease or abnormality at the level of the inner ear or eighth cranial nerve, and etiologies include noise-induced hearing loss, Meniere's disease, or acoustic neurinoma. ('Sensorineural hearing loss', 'Disease', 'MESH:D006313', (0, 26)) ('inner ear or eighth cranial nerve', 'Disease', (83, 116)) ("Meniere's disease", 'Disease', (169, 186)) ('acoustic neurinoma', 'Phenotype', 'HP:0009588', (191, 209)) ("Meniere's disease", 'Disease', 'MESH:D008575', (169, 186)) ('hearing loss', 'Disease', (155, 167)) ('Sensorineural hearing', 'Phenotype', 'HP:0000407', (0, 21)) ('hearing loss', 'Phenotype', 'HP:0000365', (155, 167)) ('hearing loss', 'Phenotype', 'HP:0000365', (14, 26)) ('inner ear or eighth cranial nerve', 'Disease', 'MESH:D000160', (83, 116)) ('cranial nerve', 'Phenotype', 'HP:0001291', (103, 116)) ('abnormality', 'Var', (51, 62)) ('acoustic neurinoma', 'Disease', (191, 209)) ('abnormality at the level of the inner ear', 'Phenotype', 'HP:0000359', (51, 92)) ('neurinoma', 'Phenotype', 'HP:0100008', (200, 209)) ('hearing loss', 'Disease', 'MESH:D034381', (14, 26)) ('hearing loss', 'Disease', 'MESH:D034381', (155, 167)) ('acoustic neurinoma', 'Disease', 'MESH:D009464', (191, 209)) ('caused by', 'Reg', (30, 39)) ('Sensorineural hearing loss', 'Disease', (0, 26)) 107259 28203490 In addition, 4D-CTA could replace invasive DSA in the follow-up of head and neck vascular malformations. ('4D-CTA', 'Chemical', '-', (13, 19)) ('neck vascular malformations', 'Disease', (76, 103)) ('neck vascular malformations', 'Disease', 'MESH:D000014', (76, 103)) ('4D-CTA', 'Var', (13, 19)) 107267 28203490 In medium-sized arteries, like the vertebral and carotid arteries, fibroblast-like changes of the smooth muscle cells cause narrowing of the arteries and seem to cause pulsitale tinnitus more frequently than in atherosclerotic disease. ('tinnitus', 'Phenotype', 'HP:0000360', (178, 186)) ('pulsitale tinnitus', 'Phenotype', 'HP:0008629', (168, 186)) ('atherosclerotic disease', 'Disease', (211, 234)) ('pulsitale tinnitus', 'Disease', (168, 186)) ('narrowing', 'NegReg', (124, 133)) ('atherosclerotic disease', 'Disease', 'MESH:D050197', (211, 234)) ('atherosclerotic disease', 'Phenotype', 'HP:0002621', (211, 234)) ('arteries', 'MPA', (141, 149)) ('cause', 'Reg', (162, 167)) ('fibroblast-like', 'Var', (67, 82)) ('pulsitale tinnitus', 'Disease', 'MESH:D014012', (168, 186)) ('cause', 'Reg', (118, 123)) 107269 28203490 In FMD, stenosis of the carotid artery is frequently located at the upper cervical level, resulting in easily transmitted vascular turbulence to the temporal bone. ('FMD', 'Disease', (3, 6)) ('FMD', 'Disease', 'MESH:C536391', (3, 6)) ('stenosis', 'Var', (8, 16)) ('FMD', 'Phenotype', 'HP:0005313', (3, 6)) 107273 28203490 An aberrant course of the internal carotid artery in the middle ear may mimic a soft tissue mass or paraganglioma at otoscopy. ('paraganglioma', 'Disease', 'MESH:D010235', (100, 113)) ('soft tissue mass', 'Phenotype', 'HP:0031459', (80, 96)) ('soft tissue mass', 'Disease', (80, 96)) ('paraganglioma', 'Phenotype', 'HP:0002668', (100, 113)) ('aberrant course', 'Var', (3, 18)) ('paraganglioma', 'Disease', (100, 113)) 107324 22858391 Evidence demonstrates that tumorigenic mutations in these genes tend to orchestrate metabolic activity into a platform that promotes cell survival, growth and proliferation. ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('tumor', 'Disease', (27, 32)) ('proliferation', 'CPA', (159, 172)) ('growth', 'CPA', (148, 154)) ('mutations', 'Var', (39, 48)) ('metabolic', 'MPA', (84, 93)) ('promotes', 'PosReg', (124, 132)) ('cell survival', 'CPA', (133, 146)) ('tumor', 'Disease', 'MESH:D009369', (27, 32)) 107325 22858391 Recent work has shown that some metabolic enzymes are also mutated in cancer, and that these mutations may influence malignancy directly. ('malignancy', 'Disease', 'MESH:D009369', (117, 127)) ('mutations', 'Var', (93, 102)) ('cancer', 'Phenotype', 'HP:0002664', (70, 76)) ('metabolic enzymes', 'Enzyme', (32, 49)) ('malignancy', 'Disease', (117, 127)) ('influence', 'Reg', (107, 116)) ('cancer', 'Disease', (70, 76)) ('cancer', 'Disease', 'MESH:D009369', (70, 76)) ('mutated', 'Var', (59, 66)) 107327 22858391 Here, we review several enzymes mutated in cancer - phosphoglycerate dehydrogenase, isocitrate dehydrogenases 1 and 2, succinate dehydrogenase, and fumarate hydratase - and discuss exciting new work that has begun to pull back the curtain on how mutations in these enzymes influence tumorigenesis. ('succinate dehydrogenase', 'Gene', '6390', (119, 142)) ('influence', 'Reg', (273, 282)) ('cancer', 'Disease', 'MESH:D009369', (43, 49)) ('tumor', 'Disease', 'MESH:D009369', (283, 288)) ('succinate dehydrogenase', 'Gene', (119, 142)) ('cancer', 'Disease', (43, 49)) ('tumor', 'Phenotype', 'HP:0002664', (283, 288)) ('isocitrate dehydrogenases', 'Gene', (84, 109)) ('mutations', 'Var', (246, 255)) ('tumor', 'Disease', (283, 288)) ('fumarate hydratase', 'Gene', '2271', (148, 166)) ('cancer', 'Phenotype', 'HP:0002664', (43, 49)) ('isocitrate dehydrogenases', 'Gene', '3417', (84, 109)) ('phosphoglycerate dehydrogenase', 'Gene', (52, 82)) ('phosphoglycerate dehydrogenase', 'Gene', '26227', (52, 82)) ('fumarate hydratase', 'Gene', (148, 166)) 107328 22858391 Cancer is a genetic disease caused primarily by mutations in oncogenes and tumor suppressors. ('caused', 'Reg', (28, 34)) ('mutations', 'Var', (48, 57)) ('tumor', 'Disease', 'MESH:D009369', (75, 80)) ('Cancer', 'Disease', (0, 6)) ('Cancer', 'Phenotype', 'HP:0002664', (0, 6)) ('oncogenes', 'Protein', (61, 70)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('genetic disease', 'Disease', (12, 27)) ('genetic disease', 'Disease', 'MESH:D030342', (12, 27)) ('tumor', 'Disease', (75, 80)) 107329 22858391 These two classes of genes normally regulate tissue homeostasis, and their perturbed function in cancer causes unwarranted cell survival and growth, culminating in tumorigenesis. ('tumor', 'Disease', (164, 169)) ('growth', 'CPA', (141, 147)) ('cancer', 'Disease', (97, 103)) ('unwarranted cell survival', 'CPA', (111, 136)) ('perturbed function', 'Var', (75, 93)) ('cancer', 'Phenotype', 'HP:0002664', (97, 103)) ('causes', 'Reg', (104, 110)) ('tumor', 'Disease', 'MESH:D009369', (164, 169)) ('tumor', 'Phenotype', 'HP:0002664', (164, 169)) ('cancer', 'Disease', 'MESH:D009369', (97, 103)) 107330 22858391 Tumors often display oncogene-activating genomic alterations such as gene amplification and gain-of-function point mutations, and/or tumor-suppressor inactivating mutations such as gene deletion, loss-of-function point mutations, or epigenetic silencing. ('epigenetic silencing', 'Var', (233, 253)) ('gene deletion', 'Var', (181, 194)) ('point mutations', 'Var', (109, 124)) ('point mutations', 'Var', (213, 228)) ('gain-of-function', 'PosReg', (92, 108)) ('loss-of-function', 'NegReg', (196, 212)) ('tumor-suppressor', 'Gene', '7248', (133, 149)) ('tumor', 'Phenotype', 'HP:0002664', (133, 138)) ('gene amplification', 'Var', (69, 87)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('tumor-suppressor', 'Gene', (133, 149)) ('oncogene-activating', 'Disease', (21, 40)) 107331 22858391 Together, these mutations enable cells to acquire the stereotypical capabilities ("hallmarks") of malignancy. ('mutations', 'Var', (16, 25)) ('malignancy', 'Disease', 'MESH:D009369', (98, 108)) ('stereotypical capabilities', 'MPA', (54, 80)) ('acquire', 'PosReg', (42, 49)) ('malignancy', 'Disease', (98, 108)) 107332 22858391 Over the past decade, a large body of work has demonstrated that most if not all oncogenes and tumor suppressors also regulate metabolism, so that mutations in these genes orchestrate nutrient utilization in a manner that facilitates cell survival and growth. ('cell survival', 'CPA', (234, 247)) ('mutations', 'Var', (147, 156)) ('facilitates', 'PosReg', (222, 233)) ('orchestrate', 'Reg', (172, 183)) ('nutrient utilization', 'MPA', (184, 204)) ('tumor', 'Disease', 'MESH:D009369', (95, 100)) ('metabolism', 'MPA', (127, 137)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('growth', 'CPA', (252, 258)) ('tumor', 'Disease', (95, 100)) 107333 22858391 Common metabolic effects of tumorigenic mutations include activation of aerobic glycolysis (the "Warburg effect", see Box 1 and Glossary), glutaminolysis, and anaplerosis, which collaborate to produce energy and macromolecular precursors needed to produce lipids, nucleic acids, and proteins for dividing cells (Box 1). ('tumor', 'Disease', (28, 33)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) ('glutaminolysis', 'MPA', (139, 153)) ('mutations', 'Var', (40, 49)) ('lipids', 'Chemical', 'MESH:D008055', (256, 262)) ('tumor', 'Disease', 'MESH:D009369', (28, 33)) ('activation', 'PosReg', (58, 68)) ('anaplerosis', 'MPA', (159, 170)) ('aerobic glycolysis', 'MPA', (72, 90)) 107339 22858391 Other metabolic pathways stimulated by oncogenes and cited as components of tumor metabolism include glutamine catabolism (glutaminolysis); de novo synthesis of fatty acids and lipids; and anaplerosis, pathways that enable the TCA cycle to provide biosynthetic precursors. ('glutamine', 'Chemical', 'MESH:D005973', (101, 110)) ('glutamine catabolism', 'MPA', (101, 121)) ('tumor', 'Disease', (76, 81)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('lipids', 'Chemical', 'MESH:D008055', (177, 183)) ('stimulated', 'PosReg', (25, 35)) ('novo', 'Chemical', '-', (143, 147)) ('fatty acids', 'Chemical', 'MESH:D005227', (161, 172)) ('tumor', 'Disease', 'MESH:D009369', (76, 81)) ('oncogenes', 'Var', (39, 48)) 107341 22858391 Remarkably, in some situations, metabolic enzymes independently function as oncogenes or tumor suppressors, suggesting that primary metabolic disturbances can drive cells towards a malignant phenotype, or at least facilitate tumorigenesis. ('tumor', 'Disease', 'MESH:D009369', (225, 230)) ('metabolic disturbance', 'Phenotype', 'HP:0001939', (132, 153)) ('tumor', 'Phenotype', 'HP:0002664', (225, 230)) ('tumor', 'Disease', (225, 230)) ('disturbances', 'Var', (142, 154)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) ('facilitate', 'PosReg', (214, 224)) ('drive', 'PosReg', (159, 164)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('tumor', 'Disease', (89, 94)) 107343 22858391 Tumors harboring these metabolic mutations have generated a tremendous amount of interest over the past few years. ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('mutations', 'Var', (33, 42)) 107346 22858391 Here, we review several metabolic enzymes that are mutated in human cancer, and discuss efforts to understand why these mutations appear to facilitate tumorigenesis. ('human cancer', 'Disease', 'MESH:D009369', (62, 74)) ('cancer', 'Phenotype', 'HP:0002664', (68, 74)) ('tumor', 'Phenotype', 'HP:0002664', (151, 156)) ('human cancer', 'Disease', (62, 74)) ('tumor', 'Disease', (151, 156)) ('mutations', 'Var', (120, 129)) ('tumor', 'Disease', 'MESH:D009369', (151, 156)) ('facilitate', 'PosReg', (140, 150)) 107355 22858391 Silencing PHGDH in human tumor cell lines with high levels of expression limits their growth in culture and in mouse models of cancer, identifying PHGDH as a potential therapeutic target in tumors leveraged towards de novo serine biosynthesis. ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('limits', 'NegReg', (73, 79)) ('mouse', 'Species', '10090', (111, 116)) ('tumor', 'Phenotype', 'HP:0002664', (190, 195)) ('tumors', 'Disease', (190, 196)) ('Silencing', 'Var', (0, 9)) ('growth in culture', 'CPA', (86, 103)) ('novo', 'Chemical', '-', (218, 222)) ('tumors', 'Disease', 'MESH:D009369', (190, 196)) ('cancer', 'Disease', (127, 133)) ('cancer', 'Phenotype', 'HP:0002664', (127, 133)) ('tumor', 'Disease', (25, 30)) ('serine', 'Chemical', 'MESH:D012694', (223, 229)) ('PHGDH', 'Gene', (10, 15)) ('tumor', 'Disease', (190, 195)) ('tumor', 'Disease', 'MESH:D009369', (25, 30)) ('tumor', 'Disease', 'MESH:D009369', (190, 195)) ('cancer', 'Disease', 'MESH:D009369', (127, 133)) ('tumors', 'Phenotype', 'HP:0002664', (190, 196)) ('human', 'Species', '9606', (19, 24)) 107359 22858391 Oncogenes also induce production of reactive oxygen species (ROS), which stimulate cellular senescence, unless cells are armed with robust antioxidant defense systems. ('Oncogenes', 'Var', (0, 9)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (36, 59)) ('cellular senescence', 'CPA', (83, 102)) ('stimulate', 'PosReg', (73, 82)) ('induce', 'Reg', (15, 21)) ('ROS', 'Chemical', 'MESH:D017382', (61, 64)) 107361 22858391 Interestingly, while silencing PHGDH may suppress cancer cell growth, it does not necessarily do so simply by limiting intracellular serine/glycine. ('intracellular serine/glycine', 'MPA', (119, 147)) ('cancer', 'Disease', (50, 56)) ('serine', 'Chemical', 'MESH:D012694', (133, 139)) ('cancer', 'Disease', 'MESH:D009369', (50, 56)) ('suppress', 'NegReg', (41, 49)) ('cancer', 'Phenotype', 'HP:0002664', (50, 56)) ('PHGDH', 'Gene', (31, 36)) ('silencing', 'Var', (21, 30)) ('glycine', 'Chemical', 'MESH:D005998', (140, 147)) 107372 22858391 In 2008, genome-sequencing efforts in glioblastoma multiforme (GBM) led to the surprising observation that a subset of these aggressive brain tumors contains mutations in IDH1. ('tumor', 'Phenotype', 'HP:0002664', (142, 147)) ('aggressive brain tumors', 'Disease', (125, 148)) ('brain tumors', 'Phenotype', 'HP:0030692', (136, 148)) ('glioblastoma multiforme', 'Disease', (38, 61)) ('aggressive brain tumors', 'Disease', 'MESH:D001927', (125, 148)) ('brain tumor', 'Phenotype', 'HP:0030692', (136, 147)) ('IDH1', 'Gene', (171, 175)) ('tumors', 'Phenotype', 'HP:0002664', (142, 148)) ('glioblastoma', 'Phenotype', 'HP:0012174', (38, 50)) ('glioblastoma multiforme', 'Disease', 'MESH:D005909', (38, 61)) ('aggressive brain', 'Phenotype', 'HP:0000718', (125, 141)) ('mutations', 'Var', (158, 167)) ('IDH1', 'Gene', '3417', (171, 175)) 107373 22858391 IDH1 mutations were preferentially observed in young patients with secondary GBM, i.e. ('patients', 'Species', '9606', (53, 61)) ('IDH1', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) ('secondary GBM', 'Disease', (67, 80)) ('observed', 'Reg', (35, 43)) ('IDH1', 'Gene', '3417', (0, 4)) 107375 22858391 A follow-up study examining more than 400 central nervous system tumors determined that some 70% of secondary GBM or World Health Organization Grade II and III astrocytomas and oligodendrogliomas contained IDH1 mutations, and other tumors from these groups had mutations in IDH2. ('astrocytomas', 'Disease', (160, 172)) ('tumors', 'Disease', (65, 71)) ('IDH1', 'Gene', (206, 210)) ('tumors', 'Disease', 'MESH:D009369', (232, 238)) ('IDH2', 'Gene', (274, 278)) ('nervous system tumors', 'Disease', (50, 71)) ('oligodendrogliomas', 'Disease', (177, 195)) ('tumors', 'Disease', 'MESH:D009369', (65, 71)) ('gliomas', 'Phenotype', 'HP:0009733', (188, 195)) ('IDH2', 'Gene', '3418', (274, 278)) ('astrocytomas', 'Disease', 'MESH:D001254', (160, 172)) ('IDH1', 'Gene', '3417', (206, 210)) ('mutations', 'Var', (261, 270)) ('nervous system tumors', 'Phenotype', 'HP:0004375', (50, 71)) ('tumors', 'Phenotype', 'HP:0002664', (232, 238)) ('nervous system tumors', 'Disease', 'MESH:D009423', (50, 71)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) ('central nervous system tumors', 'Phenotype', 'HP:0100006', (42, 71)) ('secondary GBM', 'Disease', (100, 113)) ('mutations', 'Var', (211, 220)) ('tumors', 'Phenotype', 'HP:0002664', (65, 71)) ('contained', 'Reg', (196, 205)) ('tumor', 'Phenotype', 'HP:0002664', (232, 237)) ('oligodendrogliomas', 'Disease', 'MESH:D009837', (177, 195)) ('tumors', 'Disease', (232, 238)) 107377 22858391 Subsequently, IDH1 and IDH2 mutations were also found in other cancers, including acute myeloid leukemia (AML) and chondrosarcoma. ('myeloid leukemia', 'Phenotype', 'HP:0012324', (88, 104)) ('IDH2', 'Gene', (23, 27)) ('AML', 'Disease', 'MESH:D015470', (106, 109)) ('IDH2', 'Gene', '3418', (23, 27)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (82, 104)) ('AML', 'Phenotype', 'HP:0004808', (106, 109)) ('AML', 'Disease', (106, 109)) ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (82, 104)) ('found', 'Reg', (48, 53)) ('cancers', 'Phenotype', 'HP:0002664', (63, 70)) ('IDH1', 'Gene', (14, 18)) ('cancers', 'Disease', (63, 70)) ('chondrosarcoma', 'Disease', 'MESH:D002813', (115, 129)) ('cancer', 'Phenotype', 'HP:0002664', (63, 69)) ('chondrosarcoma', 'Disease', (115, 129)) ('mutations', 'Var', (28, 37)) ('IDH1', 'Gene', '3417', (14, 18)) ('leukemia', 'Phenotype', 'HP:0001909', (96, 104)) ('acute myeloid leukemia', 'Disease', (82, 104)) ('chondrosarcoma', 'Phenotype', 'HP:0006765', (115, 129)) ('cancers', 'Disease', 'MESH:D009369', (63, 70)) 107378 22858391 Although these IDH1 and IDH2 mutations inactivate the canonical, NADPH-producing activity of these enzymes, several pieces of evidence argued against the concept that IDH1 and IDH2 are tumor suppressors. ('inactivate', 'NegReg', (39, 49)) ('tumor', 'Disease', (185, 190)) ('IDH2', 'Gene', '3418', (176, 180)) ('IDH1', 'Gene', (15, 19)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('canonical', 'MPA', (54, 63)) ('NADPH', 'Gene', (65, 70)) ('mutations', 'Var', (29, 38)) ('NADPH', 'Gene', '1666', (65, 70)) ('IDH1', 'Gene', '3417', (15, 19)) ('IDH1', 'Gene', (167, 171)) ('IDH2', 'Gene', (24, 28)) ('tumor', 'Disease', 'MESH:D009369', (185, 190)) ('IDH1', 'Gene', '3417', (167, 171)) ('enzymes', 'Enzyme', (99, 106)) ('IDH2', 'Gene', (176, 180)) ('IDH2', 'Gene', '3418', (24, 28)) 107379 22858391 First, in human gliomas, all mutations were somatically acquired. ('human', 'Species', '9606', (10, 15)) ('gliomas', 'Disease', 'MESH:D005910', (16, 23)) ('gliomas', 'Phenotype', 'HP:0009733', (16, 23)) ('gliomas', 'Disease', (16, 23)) ('mutations', 'Var', (29, 38)) 107382 22858391 All of these observations argue against a simple loss-of-function model, and suggest that the mutant IDH alleles had acquired a new activity that promotes tumor formation. ('tumor', 'Disease', 'MESH:D009369', (155, 160)) ('tumor', 'Phenotype', 'HP:0002664', (155, 160)) ('IDH', 'Gene', '3417', (101, 104)) ('tumor', 'Disease', (155, 160)) ('mutant', 'Var', (94, 100)) ('IDH', 'Gene', (101, 104)) ('promotes', 'PosReg', (146, 154)) 107383 22858391 Indeed, a metabolomic analysis of human GBM cells engineered to over-express mutant IDH1, identified large amounts of R(-)-2-hydroxyglutarate ((R)-2HG), the reduced form of alpha-ketoglutarate (Figure 2). ('human', 'Species', '9606', (34, 39)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (173, 192)) ('over-express', 'PosReg', (64, 76)) ('IDH1', 'Gene', (84, 88)) ('IDH1', 'Gene', '3417', (84, 88)) ('R(-)-2-hydroxyglutarate', 'Chemical', '-', (118, 141)) ('mutant', 'Var', (77, 83)) 107384 22858391 This metabolite was also abundant in human tumors with mutant IDH1, but not wild-type IDH1, and in vitro studies revealed that the mutant allele possesses a neomorphic enzyme activity that enables it to convertalpha-ketoglutarate directly to (R)-2HG in the presence of NADPH. ('IDH1', 'Gene', (86, 90)) ('IDH1', 'Gene', '3417', (62, 66)) ('human tumors', 'Disease', (37, 49)) ('mutant', 'Var', (131, 137)) ('IDH1', 'Gene', '3417', (86, 90)) ('mutant', 'Var', (55, 61)) ('IDH1', 'Gene', (62, 66)) ('NADPH', 'Gene', '1666', (269, 274)) ('NADPH', 'Gene', (269, 274)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('tumors', 'Phenotype', 'HP:0002664', (43, 49)) ('convertalpha-ketoglutarate', 'MPA', (203, 229)) ('human tumors', 'Disease', 'MESH:D009369', (37, 49)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (210, 229)) 107385 22858391 Mutations in IDH2 also produce (R)-2HG from alpha-ketoglutarate and result in 2HG accumulation in primary human AML samples. ('2HG accumulation', 'MPA', (78, 94)) ('human', 'Species', '9606', (106, 111)) ('AML', 'Disease', 'MESH:D015470', (112, 115)) ('IDH2', 'Gene', (13, 17)) ('produce', 'Reg', (23, 30)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (44, 63)) ('result in', 'Reg', (68, 77)) ('Mutations', 'Var', (0, 9)) ('IDH2', 'Gene', '3418', (13, 17)) ('AML', 'Phenotype', 'HP:0004808', (112, 115)) ('AML', 'Disease', (112, 115)) 107388 22858391 Children with homozygous mutations in L2HGDH accumulate (S)-2HG, but not (R)-2HG, in all body fluids, starting in childhood or earlier. ('Children', 'Species', '9606', (0, 8)) ('mutations', 'Var', (25, 34)) ('accumulate', 'PosReg', (45, 55)) ('L2HGDH', 'Gene', (38, 44)) ('L2HGDH', 'Gene', '79944', (38, 44)) 107389 22858391 The main clinical features of L2HGDH deficiency are developmental delay, seizures, ataxia, and abnormalities of the white matter and basal ganglia. ('L2HGDH', 'Gene', (30, 36)) ('L2HGDH', 'Gene', '79944', (30, 36)) ('ataxia', 'Phenotype', 'HP:0001251', (83, 89)) ('seizures', 'Disease', 'MESH:D012640', (73, 81)) ('abnormalities of the white matter', 'Disease', (95, 128)) ('ataxia', 'Disease', (83, 89)) ('abnormalities of the white matter', 'Disease', 'MESH:D056784', (95, 128)) ('developmental delay', 'Disease', 'MESH:D002658', (52, 71)) ('developmental delay', 'Disease', (52, 71)) ('developmental delay', 'Phenotype', 'HP:0001263', (52, 71)) ('seizures', 'Disease', (73, 81)) ('deficiency', 'Var', (37, 47)) ('seizures', 'Phenotype', 'HP:0001250', (73, 81)) ('ataxia', 'Disease', 'MESH:D001259', (83, 89)) 107391 22858391 Children with homozygous mutations in D2HGDH accumulate (R)-2HG, but not (S)-2HG, starting in early in life, and these patients develop a syndrome of developmental delay, hypotonia, and seizures. ('mutations', 'Var', (25, 34)) ('D2HGDH', 'Gene', (38, 44)) ('syndrome', 'Disease', (138, 146)) ('accumulate', 'PosReg', (45, 55)) ('Children', 'Species', '9606', (0, 8)) ('hypotonia', 'Disease', 'MESH:D009123', (171, 180)) ('developmental delay', 'Phenotype', 'HP:0001263', (150, 169)) ('developmental delay', 'Disease', 'MESH:D002658', (150, 169)) ('developmental delay', 'Disease', (150, 169)) ('D2HGDH', 'Gene', '728294', (38, 44)) ('patients', 'Species', '9606', (119, 127)) ('develop', 'Reg', (128, 135)) ('seizures', 'Disease', 'MESH:D012640', (186, 194)) ('hypotonia', 'Phenotype', 'HP:0001290', (171, 180)) ('hypotonia', 'Disease', (171, 180)) ('seizures', 'Disease', (186, 194)) ('seizures', 'Phenotype', 'HP:0001250', (186, 194)) 107392 22858391 Germline, monoallelic gain-of-function IDH2 mutations, similar to those observed in gliomas, were recently identified in a subset of children systemic elevations of (R)-2HG. ('gain-of-function', 'PosReg', (22, 38)) ('IDH2', 'Gene', (39, 43)) ('gliomas', 'Disease', (84, 91)) ('gliomas', 'Disease', 'MESH:D005910', (84, 91)) ('IDH2', 'Gene', '3418', (39, 43)) ('children', 'Species', '9606', (133, 141)) ('gliomas', 'Phenotype', 'HP:0009733', (84, 91)) ('mutations', 'Var', (44, 53)) ('elevations', 'PosReg', (151, 161)) 107393 22858391 These children display phenotypic overlap with D2HGDH deficiency, and approximately half of them also develop cardiomyopathy. ('deficiency', 'Var', (54, 64)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (110, 124)) ('D2HGDH', 'Gene', '728294', (47, 53)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (110, 124)) ('develop', 'Reg', (102, 109)) ('cardiomyopathy', 'Disease', (110, 124)) ('children', 'Species', '9606', (6, 14)) ('D2HGDH', 'Gene', (47, 53)) 107394 22858391 Interestingly, despite the fact that (R)-2HG accumulates in tumors with monoallelic, somatically-acquired IDH1 and IDH2 mutations, neither systemic D2HGDH deficiency nor germline IDH2 mutations have so far been associated with cancer. ('IDH2', 'Gene', (115, 119)) ('IDH2', 'Gene', '3418', (179, 183)) ('cancer', 'Phenotype', 'HP:0002664', (227, 233)) ('IDH1', 'Gene', '3417', (106, 110)) ('IDH2', 'Gene', '3418', (115, 119)) ('IDH2', 'Gene', (179, 183)) ('cancer', 'Disease', 'MESH:D009369', (227, 233)) ('tumors', 'Disease', 'MESH:D009369', (60, 66)) ('IDH1', 'Gene', (106, 110)) ('D2HGDH', 'Gene', (148, 154)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('tumors', 'Phenotype', 'HP:0002664', (60, 66)) ('mutations', 'Var', (120, 129)) ('cancer', 'Disease', (227, 233)) ('associated', 'Reg', (211, 221)) ('D2HGDH', 'Gene', '728294', (148, 154)) ('tumors', 'Disease', (60, 66)) 107395 22858391 This seems to suggest that (R)-2HG is a context-specific "oncometabolite," perhaps requiring exposure to susceptible cell types and/or a permissive developmental state to elicit malignancy. ('malignancy', 'Disease', (178, 188)) ('malignancy', 'Disease', 'MESH:D009369', (178, 188)) ('R)-2HG', 'Var', (28, 34)) 107397 22858391 These include the alpha-ketoglutarate-dependent dioxygenases, which comprise a large family of enzymes that carry out diverse functions such as prolyl hydroxylation, histone demethylation and epigenetic modification of DNA (Figure 2). ('epigenetic modification', 'Var', (192, 215)) ('DNA', 'Gene', (219, 222)) ('histone', 'MPA', (166, 173)) ('oxygen', 'Chemical', 'MESH:D010100', (50, 56)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (18, 37)) 107398 22858391 In gliomas, (R)-2HG produced by mutant IDH1 substantially and stably alters the DNA methylome and is sufficient to establish the CpG island methylator phenotype, which defines a clinically distinct subset of tumors. ('IDH1', 'Gene', (39, 43)) ('tumor', 'Phenotype', 'HP:0002664', (208, 213)) ('mutant', 'Var', (32, 38)) ('DNA methylome', 'MPA', (80, 93)) ('tumors', 'Disease', (208, 214)) ('gliomas', 'Disease', 'MESH:D005910', (3, 10)) ('IDH1', 'Gene', '3417', (39, 43)) ('tumors', 'Phenotype', 'HP:0002664', (208, 214)) ('gliomas', 'Disease', (3, 10)) ('alters', 'Reg', (69, 75)) ('tumors', 'Disease', 'MESH:D009369', (208, 214)) ('gliomas', 'Phenotype', 'HP:0009733', (3, 10)) 107399 22858391 Enhanced DNA methylation and epigenetic remodeling is also common in AML, where it frequently occurs through deletion of the 5-methylcytosine hydroxylase TET2, another alpha-ketoglutarate-dependent enzyme. ('AML', 'Phenotype', 'HP:0004808', (69, 72)) ('AML', 'Disease', (69, 72)) ('deletion', 'Var', (109, 117)) ('epigenetic', 'MPA', (29, 39)) ('Enhanced', 'PosReg', (0, 8)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (168, 187)) ('TET2', 'Gene', '54790', (154, 158)) ('AML', 'Disease', 'MESH:D015470', (69, 72)) ('TET2', 'Gene', (154, 158)) ('DNA', 'MPA', (9, 12)) 107400 22858391 AML samples with IDH1/2 mutations exhibit a similar hypermethylation phenotype, yet these mutations are mutually exclusive with TET2 mutations. ('TET2', 'Gene', '54790', (128, 132)) ('TET2', 'Gene', (128, 132)) ('IDH1/2', 'Gene', '3417;3418', (17, 23)) ('IDH1/2', 'Gene', (17, 23)) ('AML', 'Disease', 'MESH:D015470', (0, 3)) ('mutations', 'Var', (24, 33)) ('AML', 'Phenotype', 'HP:0004808', (0, 3)) ('AML', 'Disease', (0, 3)) 107401 22858391 Transient transfection of mutant IDH1/2 was sufficient to inhibit TET2 function in cultured cells, suggesting that (R)-2HG-producing IDH1/2 mutations are functionally redundant with inactivating TET2 mutations. ('IDH1/2', 'Gene', '3417;3418', (33, 39)) ('function', 'MPA', (71, 79)) ('TET2', 'Gene', (66, 70)) ('IDH1/2', 'Gene', (33, 39)) ('TET2', 'Gene', '54790', (195, 199)) ('IDH1/2', 'Gene', (133, 139)) ('inhibit', 'NegReg', (58, 65)) ('mutations', 'Var', (140, 149)) ('mutant', 'Var', (26, 32)) ('TET2', 'Gene', (195, 199)) ('TET2', 'Gene', '54790', (66, 70)) ('IDH1/2', 'Gene', '3417;3418', (133, 139)) 107402 22858391 Expression of these mutations also impairs differentiation of primary mouse bone marrow cells and suppresses histone demethylation and adipocyte differentiation in culture. ('suppresses', 'NegReg', (98, 108)) ('adipocyte differentiation in culture', 'CPA', (135, 171)) ('mouse', 'Species', '10090', (70, 75)) ('impairs', 'NegReg', (35, 42)) ('histone demethylation', 'MPA', (109, 130)) ('differentiation', 'CPA', (43, 58)) ('mutations', 'Var', (20, 29)) 107403 22858391 Together, these observations suggest that (R)-2HG-producing IDH1/2 mutations promote malignancy by remodeling the epigenetic landscape in a way that arrests cellular differentiation. ('malignancy', 'Disease', (85, 95)) ('cellular differentiation', 'CPA', (157, 181)) ('promote', 'PosReg', (77, 84)) ('arrests', 'NegReg', (149, 156)) ('IDH1/2', 'Gene', (60, 66)) ('mutations', 'Var', (67, 76)) ('epigenetic landscape', 'MPA', (114, 134)) ('malignancy', 'Disease', 'MESH:D009369', (85, 95)) ('remodeling', 'Reg', (99, 109)) ('IDH1/2', 'Gene', '3417;3418', (60, 66)) 107406 22858391 At low millimolar levels similar to those found in IDH1/2-mutant gliomas, (R)-2HG selectively enhances prolyl hydroxylase activity in vitro by acting as a co-substrate for the enzyme. ('gliomas', 'Disease', (65, 72)) ('enhances', 'PosReg', (94, 102)) ('prolyl hydroxylase activity', 'MPA', (103, 130)) ('R)-2HG', 'Var', (75, 81)) ('IDH1/2', 'Gene', '3417;3418', (51, 57)) ('IDH1/2', 'Gene', (51, 57)) ('gliomas', 'Disease', 'MESH:D005910', (65, 72)) ('gliomas', 'Phenotype', 'HP:0009733', (65, 72)) 107407 22858391 This is associated with enhanced degradation of HIF-alpha subunits in cell lines expressing IDH1 mutations, and with blunted expression of HIF target genes in IDH1/2-mutant gliomas. ('mutations', 'Var', (97, 106)) ('HIF-alpha subunits', 'Protein', (48, 66)) ('gliomas', 'Phenotype', 'HP:0009733', (173, 180)) ('gliomas', 'Disease', (173, 180)) ('IDH1', 'Gene', (159, 163)) ('gliomas', 'Disease', 'MESH:D005910', (173, 180)) ('IDH1', 'Gene', (92, 96)) ('IDH1', 'Gene', '3417', (159, 163)) ('IDH1/2', 'Gene', '3417;3418', (159, 165)) ('enhanced', 'PosReg', (24, 32)) ('degradation', 'MPA', (33, 44)) ('IDH1', 'Gene', '3417', (92, 96)) ('IDH1/2', 'Gene', (159, 165)) 107409 22858391 Work on IDH1/2 mutations in cancer has revealed a system in which a primary metabolic disturbance elicits non-metabolic effects that promote malignancy. ('cancer', 'Phenotype', 'HP:0002664', (28, 34)) ('malignancy', 'Disease', 'MESH:D009369', (141, 151)) ('promote', 'PosReg', (133, 140)) ('mutations', 'Var', (15, 24)) ('malignancy', 'Disease', (141, 151)) ('non-metabolic effects', 'MPA', (106, 127)) ('IDH1/2', 'Gene', '3417;3418', (8, 14)) ('cancer', 'Disease', 'MESH:D009369', (28, 34)) ('cancer', 'Disease', (28, 34)) ('elicits', 'Reg', (98, 105)) ('metabolic disturbance', 'Phenotype', 'HP:0001939', (76, 97)) ('IDH1/2', 'Gene', (8, 14)) 107411 22858391 However, the relatively favorable prognosis in gliomas with IDH1/2 mutations emphasizes the prognostic utility of detecting (R)-2HG in tumors. ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('IDH1/2', 'Gene', (60, 66)) ('mutations', 'Var', (67, 76)) ('gliomas', 'Disease', (47, 54)) ('tumors', 'Disease', (135, 141)) ('tumors', 'Disease', 'MESH:D009369', (135, 141)) ('gliomas', 'Disease', 'MESH:D005910', (47, 54)) ('tumors', 'Phenotype', 'HP:0002664', (135, 141)) ('gliomas', 'Phenotype', 'HP:0009733', (47, 54)) ('IDH1/2', 'Gene', '3417;3418', (60, 66)) 107416 22858391 Mutations in genes encoding SDH subunits were identified in familial forms of the neuroendocrine tumors pheochromocytoma (PCC) and paraganglioma (PGL). ('paraganglioma', 'Disease', (131, 144)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (82, 103)) ('neuroendocrine tumors pheochromocytoma', 'Disease', 'MESH:D018358', (82, 120)) ('SDH', 'Gene', '6390', (28, 31)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('paraganglioma', 'Disease', 'MESH:D010235', (131, 144)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (104, 120)) ('SDH', 'Gene', (28, 31)) ('Mutations', 'Var', (0, 9)) ('tumors', 'Phenotype', 'HP:0002664', (97, 103)) ('PCC', 'Phenotype', 'HP:0002666', (122, 125)) ('identified', 'Reg', (46, 56)) ('paraganglioma', 'Phenotype', 'HP:0002668', (131, 144)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (82, 102)) ('PGL', 'Phenotype', 'HP:0002668', (146, 149)) ('neuroendocrine tumors pheochromocytoma', 'Disease', (82, 120)) 107417 22858391 Affected individuals inherit a loss of function mutation in one allele of a gene encoding an SDH subunit, and their tumors display loss of expression of the other allele, through somatic deletion or other mechanisms. ('tumors', 'Disease', (116, 122)) ('tumors', 'Disease', 'MESH:D009369', (116, 122)) ('tumors', 'Phenotype', 'HP:0002664', (116, 122)) ('SDH', 'Gene', '6390', (93, 96)) ('loss', 'NegReg', (131, 135)) ('loss of function', 'NegReg', (31, 47)) ('mutation', 'Var', (48, 56)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('expression', 'MPA', (139, 149)) ('SDH', 'Gene', (93, 96)) 107420 22858391 For cases of PGL caused by mutations in SDHD, only paternally-acquired mutations are associated with tumors, suggesting that the maternally-inherited allele is imprinted. ('mutations', 'Var', (27, 36)) ('SDHD', 'Gene', '6392', (40, 44)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) ('SDHD', 'Gene', (40, 44)) ('PGL', 'Phenotype', 'HP:0002668', (13, 16)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('PGL', 'Disease', (13, 16)) ('caused by', 'Reg', (17, 26)) ('tumors', 'Disease', (101, 107)) 107424 22858391 Biallelic germline FH mutations cause a rare metabolic disorder characterized by severe encephalopathy and mental retardation. ('mental retardation', 'Disease', (107, 125)) ('mental retardation', 'Disease', 'MESH:D008607', (107, 125)) ('metabolic disorder', 'Disease', 'MESH:D008659', (45, 63)) ('encephalopathy', 'Disease', 'MESH:D001927', (88, 102)) ('metabolic disorder', 'Phenotype', 'HP:0001939', (45, 63)) ('encephalopathy', 'Phenotype', 'HP:0001298', (88, 102)) ('mutations', 'Var', (22, 31)) ('encephalopathy', 'Disease', (88, 102)) ('FH', 'Gene', '2271', (19, 21)) ('cause', 'Reg', (32, 37)) ('mental retardation', 'Phenotype', 'HP:0001249', (107, 125)) ('metabolic disorder', 'Disease', (45, 63)) 107425 22858391 In 2002, it was discovered that heterozygous mutations in FH underlie a familial syndrome of benign leiomyomas of the skin and uterus, and highly aggressive renal tumors, termed hereditary leiomyomatosis and renal cell cancer (HLRCC). ('renal tumors', 'Phenotype', 'HP:0009726', (157, 169)) ('cancer', 'Phenotype', 'HP:0002664', (219, 225)) ('renal tumor', 'Phenotype', 'HP:0009726', (157, 168)) ('familial syndrome of benign leiomyomas of the skin', 'Disease', (72, 122)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('heterozygous mutations', 'Var', (32, 54)) ('aggressive renal tumors', 'Disease', 'MESH:D007674', (146, 169)) ('aggressive renal tumors', 'Disease', (146, 169)) ('underlie', 'Reg', (61, 69)) ('tumors', 'Phenotype', 'HP:0002664', (163, 169)) ('familial syndrome of benign leiomyomas of the skin', 'Disease', 'MESH:C535516', (72, 122)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (208, 225)) ('hereditary leiomyomatosis and renal cell cancer', 'Disease', 'MESH:C535516', (178, 225)) ('FH', 'Gene', '2271', (58, 60)) 107427 22858391 The inherited FH mutations severely reduce enzyme activity, causing the tumors to accumulate high levels of fumarate. ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('reduce', 'NegReg', (36, 42)) ('FH', 'Gene', '2271', (14, 16)) ('tumors', 'Disease', (72, 78)) ('tumors', 'Disease', 'MESH:D009369', (72, 78)) ('tumors', 'Phenotype', 'HP:0002664', (72, 78)) ('causing', 'Reg', (60, 67)) ('fumarate', 'Chemical', 'MESH:D005650', (108, 116)) ('enzyme activity', 'MPA', (43, 58)) ('accumulate', 'PosReg', (82, 92)) ('mutations', 'Var', (17, 26)) 107432 22858391 Silencing one of the enzymes in this pathway, heme oxygenase-1 (HMOX1), using RNA interference or a chemical inhibitor, kills FH-deficient human and mouse kidney cells in culture, but is well tolerated by cells expressing wild-type FH. ('FH-deficient', 'Disease', 'MESH:D006938', (126, 138)) ('heme oxygenase-1', 'Gene', (46, 62)) ('RNA interference', 'MPA', (78, 94)) ('HMOX1', 'Gene', (64, 69)) ('FH', 'Gene', '2271', (232, 234)) ('human', 'Species', '9606', (139, 144)) ('mouse', 'Species', '10090', (149, 154)) ('FH', 'Gene', '2271', (126, 128)) ('HMOX1', 'Gene', '3162', (64, 69)) ('heme oxygenase-1', 'Gene', '3162', (46, 62)) ('Silencing', 'Var', (0, 9)) ('FH-deficient', 'Disease', (126, 138)) 107440 22858391 This pathway of glutamine-dependent reductive carboxylation appears to be a robust mechanism allowing cells to maintain growth during impaired oxidative metabolism, because it is also observed in human cancer cells lines with mutations in the ETC or in the Von-Hippel-Lindau (VHL) tumor suppressor, and in cells subjected to hypoxia, all of which negatively impact oxygen-dependent mitochondrial enzymes. ('human cancer', 'Disease', (196, 208)) ('cancer', 'Phenotype', 'HP:0002664', (202, 208)) ('hypoxia', 'Disease', (325, 332)) ('hypoxia', 'Disease', 'MESH:D000860', (325, 332)) ('Von-Hippel-Lindau (VHL) tumor', 'Disease', 'MESH:D006623', (257, 286)) ('glutamine', 'Chemical', 'MESH:D005973', (16, 25)) ('oxygen', 'Chemical', 'MESH:D010100', (365, 371)) ('ETC', 'Gene', (243, 246)) ('mutations', 'Var', (226, 235)) ('human cancer', 'Disease', 'MESH:D009369', (196, 208)) ('tumor', 'Phenotype', 'HP:0002664', (281, 286)) ('impact', 'Reg', (358, 364)) ('oxygen-dependent mitochondrial enzymes', 'MPA', (365, 403)) 107451 22858391 Keap1 mutations are frequently observed in solid human tumors, leading to the proposal that it functions as a tumor suppressor. ('Keap1', 'Gene', (0, 5)) ('tumor', 'Disease', 'MESH:D009369', (55, 60)) ('tumor', 'Disease', 'MESH:D009369', (110, 115)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('human tumors', 'Disease', 'MESH:D009369', (49, 61)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('tumor', 'Disease', (110, 115)) ('tumors', 'Phenotype', 'HP:0002664', (55, 61)) ('tumor', 'Disease', (55, 60)) ('human tumors', 'Disease', (49, 61)) ('mutations', 'Var', (6, 15)) ('Keap1', 'Gene', '9817', (0, 5)) 107452 22858391 Furthermore, ablation of the NRF2 gene reduces tumor formation in an oncogenic KRAS mouse model. ('NRF2', 'Gene', '18024', (29, 33)) ('ablation', 'Var', (13, 21)) ('tumor', 'Disease', 'MESH:D009369', (47, 52)) ('mouse', 'Species', '10090', (84, 89)) ('NRF2', 'Gene', (29, 33)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('reduces', 'NegReg', (39, 46)) ('tumor', 'Disease', (47, 52)) 107454 22858391 In some forms of cancer, metabolic enzymes are altered by the same mutational mechanisms observed in classical oncogenes and tumor suppressors: genomic amplification, activating mutations, and loss-of-function mutations. ('genomic amplification', 'Var', (144, 165)) ('tumor', 'Disease', 'MESH:D009369', (125, 130)) ('mutations', 'Var', (210, 219)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('cancer', 'Disease', 'MESH:D009369', (17, 23)) ('tumor', 'Disease', (125, 130)) ('cancer', 'Disease', (17, 23)) ('loss-of-function', 'NegReg', (193, 209)) ('altered', 'Reg', (47, 54)) ('metabolic enzymes', 'MPA', (25, 42)) ('activating', 'PosReg', (167, 177)) ('cancer', 'Phenotype', 'HP:0002664', (17, 23)) 107459 22858391 In order to solve this problem, it will be necessary to understand how metabolic perturbations influence processes beyond bioenergetics, energy storage, and macromolecular synthesis, the traditional roles of metabolism, and support the hallmarks of malignancy. ('macromolecular synthesis', 'MPA', (157, 181)) ('influence', 'Reg', (95, 104)) ('perturbations', 'Var', (81, 94)) ('malignancy', 'Disease', 'MESH:D009369', (249, 259)) ('malignancy', 'Disease', (249, 259)) 107461 22858391 Diagnostic imaging of abundant metabolites is already possible in gliomas containing (R)-2HG, and may be possible for fumarate and succinate as well. ('succinate', 'Chemical', 'MESH:D019802', (131, 140)) ('fumarate', 'Chemical', 'MESH:D005650', (118, 126)) ('gliomas', 'Disease', 'MESH:D005910', (66, 73)) ('R)-2HG', 'Var', (86, 92)) ('gliomas', 'Phenotype', 'HP:0009733', (66, 73)) ('gliomas', 'Disease', (66, 73)) 107463 22858391 Do mutations in other metabolic enzymes besides the ones discussed here occur in human cancer? ('human cancer', 'Disease', 'MESH:D009369', (81, 93)) ('mutations', 'Var', (3, 12)) ('cancer', 'Phenotype', 'HP:0002664', (87, 93)) ('human cancer', 'Disease', (81, 93)) 107466 22858391 What are the mechanisms that restrict tumor development to specific organs following enzyme mutations? ('tumor', 'Phenotype', 'HP:0002664', (38, 43)) ('tumor', 'Disease', (38, 43)) ('tumor', 'Disease', 'MESH:D009369', (38, 43)) ('mutations', 'Var', (92, 101)) 107470 22858391 Mutations in FH are observed in families with HLRCC (see above). ('Mutations', 'Var', (0, 9)) ('HLRCC', 'Disease', (46, 51)) ('FH', 'Gene', '2271', (13, 15)) ('observed', 'Reg', (20, 28)) 107472 22858391 Low-grade gliomas, acute myelogenous leukemias, chondrosarcomas and other human tumors contain somatically-acquired mutations in either of two IDH isoforms, IDH1 or IDH2. ('gliomas', 'Phenotype', 'HP:0009733', (10, 17)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('IDH2', 'Gene', (165, 169)) ('chondrosarcomas', 'Disease', (48, 63)) ('IDH2', 'Gene', '3418', (165, 169)) ('IDH', 'Gene', (143, 146)) ('leukemias', 'Phenotype', 'HP:0001909', (37, 46)) ('IDH1', 'Gene', (157, 161)) ('chondrosarcoma', 'Phenotype', 'HP:0006765', (48, 62)) ('gliomas', 'Disease', (10, 17)) ('leukemia', 'Phenotype', 'HP:0001909', (37, 45)) ('IDH', 'Gene', (157, 160)) ('IDH', 'Gene', (165, 168)) ('IDH', 'Gene', '3417', (143, 146)) ('myelogenous leukemias', 'Disease', 'MESH:D007951', (25, 46)) ('mutations', 'Var', (116, 125)) ('IDH1', 'Gene', '3417', (157, 161)) ('gliomas', 'Disease', 'MESH:D005910', (10, 17)) ('chondrosarcomas', 'Phenotype', 'HP:0006765', (48, 63)) ('acute myelogenous leukemias', 'Phenotype', 'HP:0004808', (19, 46)) ('myelogenous leukemias', 'Disease', (25, 46)) ('myelogenous leukemias', 'Phenotype', 'HP:0012324', (25, 46)) ('IDH', 'Gene', '3417', (165, 168)) ('IDH', 'Gene', '3417', (157, 160)) ('human tumors', 'Disease', (74, 86)) ('tumors', 'Phenotype', 'HP:0002664', (80, 86)) ('chondrosarcomas', 'Disease', 'MESH:D002813', (48, 63)) ('human tumors', 'Disease', 'MESH:D009369', (74, 86)) 107474 22858391 However, unlike most oncogenes, mutations in IDH1 and IDH2 do not simply accentuate their canonical enzyme activity; rather mutant forms of IDH1 and IDH2 acquire the ability to produce an oncometabolite, R(-)-2-hydroxyglutarate (see below), from alpha-ketoglutarate Phosphoglycerate dehydrogenase (PHGDH) An enzyme involved in the de novo synthesis of serine from glucose. ('IDH1', 'Gene', '3417', (45, 49)) ('IDH1', 'Gene', '3417', (140, 144)) ('IDH2', 'Gene', (54, 58)) ('IDH2', 'Gene', (149, 153)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (246, 265)) ('Phosphoglycerate dehydrogenase', 'Gene', '26227', (266, 296)) ('mutant', 'Var', (124, 130)) ('IDH2', 'Gene', '3418', (54, 58)) ('IDH2', 'Gene', '3418', (149, 153)) ('mutations', 'Var', (32, 41)) ('IDH1', 'Gene', (140, 144)) ('R(-)-2-hydroxyglutarate', 'Chemical', '-', (204, 227)) ('Phosphoglycerate dehydrogenase', 'Gene', (266, 296)) ('serine', 'Chemical', 'MESH:D012694', (352, 358)) ('IDH1', 'Gene', (45, 49)) ('glucose', 'Chemical', 'MESH:D005947', (364, 371)) ('novo', 'Chemical', '-', (334, 338)) 107476 22858391 PHGDH protein is highly expressed in a substantial fraction of human cancers, and amplification of the PHGDH gene on chromosome 1p12 accounts for many of these. ('cancers', 'Disease', 'MESH:D009369', (69, 76)) ('human cancer', 'Disease', (63, 75)) ('cancers', 'Phenotype', 'HP:0002664', (69, 76)) ('cancer', 'Phenotype', 'HP:0002664', (69, 75)) ('PHGDH', 'Gene', (0, 5)) ('amplification', 'Var', (82, 95)) ('PHGDH', 'Gene', (103, 108)) ('human cancer', 'Disease', 'MESH:D009369', (63, 75)) ('cancers', 'Disease', (69, 76)) 107478 22858391 This reaction enables cells to maintain production of TCA cycle metabolites even when function of the cycle is severely impaired by FH deficiency or other processes R(-)-2-hydroxyglutarate ((R)-2HG) An "oncometabolite" produced via the neomorphic enzyme activity of mutant IDH1 and IDH2. ('IDH2', 'Gene', '3418', (282, 286)) ('impaired by FH deficiency', 'Disease', 'MESH:D006938', (120, 145)) ('IDH1', 'Gene', (273, 277)) ('R(-)-2-hydroxyglutarate', 'Chemical', '-', (165, 188)) ('mutant', 'Var', (266, 272)) ('IDH1', 'Gene', '3417', (273, 277)) ('impaired by FH deficiency', 'Disease', (120, 145)) ('IDH2', 'Gene', (282, 286)) 107480 22858391 Tumors with IDH1 or IDH2 mutations may accumulate (R)-2HG to levels of several millimoles/L. ('mutations', 'Var', (25, 34)) ('IDH1', 'Gene', (12, 16)) ('accumulate', 'PosReg', (39, 49)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('IDH1', 'Gene', '3417', (12, 16)) ('IDH2', 'Gene', (20, 24)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('IDH2', 'Gene', '3418', (20, 24)) 107481 22858391 (R)-2HG alters the function of a large number of enzymes that use alpha-ketoglutarate as a substrate, and these effects are implicated in the oncogenic potential of mutant IDH1 and IDH2 Succinate dehydrogenase (SDH) Tricarboxylic acid (TCA) cycle enzyme that converts succinate to fumarate, and also functions as complex II of the electron transport chain. ('succinate', 'Chemical', 'MESH:D019802', (268, 277)) ('implicated', 'Reg', (124, 134)) ('mutant', 'Var', (165, 171)) ('IDH1', 'Gene', '3417', (172, 176)) ('Succinate dehydrogenase', 'Gene', '6390', (186, 209)) ('fumarate', 'Chemical', 'MESH:D005650', (281, 289)) ('IDH1', 'Gene', (172, 176)) ('IDH2', 'Gene', (181, 185)) ('Tricarboxylic acid', 'Chemical', 'MESH:D014233', (216, 234)) ('SDH', 'Gene', '6390', (211, 214)) ('Succinate dehydrogenase', 'Gene', (186, 209)) ('alters', 'Reg', (8, 14)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (66, 85)) ('SDH', 'Gene', (211, 214)) ('function', 'MPA', (19, 27)) ('IDH2', 'Gene', '3418', (181, 185)) 107483 22858391 Mutations in any of these genes, or in a gene encoding an assembly factor for the complex, can be observed in patients with paraganglioma and pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (142, 158)) ('paraganglioma', 'Disease', 'MESH:D010235', (124, 137)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (142, 158)) ('paraganglioma', 'Phenotype', 'HP:0002668', (124, 137)) ('observed', 'Reg', (98, 106)) ('Mutations', 'Var', (0, 9)) ('paraganglioma', 'Disease', (124, 137)) ('pheochromocytoma', 'Disease', (142, 158)) ('patients', 'Species', '9606', (110, 118)) 107541 20186147 PHEO group presented with significantly higher blood pressure in comparison to control group which might be an explanation for higher PWV in PHEO patients. ('PHEO', 'Phenotype', 'HP:0002666', (0, 4)) ('blood pressure', 'MPA', (47, 61)) ('higher', 'PosReg', (40, 46)) ('PHEO', 'Phenotype', 'HP:0002666', (141, 145)) ('higher blood pressure', 'Phenotype', 'HP:0000822', (40, 61)) ('PHEO', 'Var', (0, 4)) ('patients', 'Species', '9606', (146, 154)) 107543 20186147 Previous in vitro studies have found that norepinephrine leads to hypertrophy and proliferation of cultured smooth muscle cells and also induces proliferation of adventitial fibroblasts . ('hypertrophy', 'Disease', (66, 77)) ('proliferation', 'CPA', (146, 159)) ('hypertrophy', 'Disease', 'MESH:D006984', (66, 77)) ('norepinephrine', 'Chemical', 'MESH:D009638', (42, 56)) ('norepinephrine', 'Var', (42, 56)) ('induces', 'Reg', (138, 145)) ('proliferation', 'CPA', (82, 95)) ('adventitial fibroblasts', 'CPA', (163, 186)) 107551 20186147 Other mechanism, which may also play a role in elevation of arterial stiffness, is higher fasting plasma glucose in patients with PHEO . ('fasting plasma glucose', 'MPA', (90, 112)) ('patients', 'Species', '9606', (116, 124)) ('glucose', 'Chemical', 'MESH:D005947', (105, 112)) ('arterial', 'MPA', (60, 68)) ('elevation of arterial stiffness', 'Phenotype', 'HP:0030965', (47, 78)) ('PHEO', 'Phenotype', 'HP:0002666', (130, 134)) ('PHEO', 'Var', (130, 134)) ('higher', 'PosReg', (83, 89)) 107585 21605527 Several studies have reported that laparoscopic adrenalectomy is followed by lower complication rates, less operative blood loss, less postoperative pain, earlier return to normal activity, and shorter hospital stay. ('lower', 'NegReg', (77, 82)) ('laparoscopic', 'Var', (35, 47)) ('blood loss', 'Disease', 'MESH:D006473', (118, 128)) ('postoperative pain', 'Disease', 'MESH:D010149', (135, 153)) ('pain', 'Phenotype', 'HP:0012531', (149, 153)) ('complication', 'CPA', (83, 95)) ('blood loss', 'Disease', (118, 128)) ('postoperative pain', 'Disease', (135, 153)) 107727 30050099 Metabolome-guided genomics to identify mutations in isocitrate dehydrogenase, fumarate hydratase and succinate dehydrogenase genes in pheochromocytoma and paraganglioma Metabolic aberrations have been described in neoplasms with mutations in the Krebs cycle genes encoding succinate dehydrogenase (SDH), fumarate hydratase (FH) and isocitrate dehydrogenase (IDH). ('fumarate hydratase', 'Gene', '2271', (304, 322)) ('SDH', 'Gene', (298, 301)) ('IDH', 'Gene', (358, 361)) ('FH', 'Gene', '2271', (324, 326)) ('fumarate hydratase', 'Gene', (78, 96)) ('pheochromocytoma', 'Disease', (134, 150)) ('neoplasms', 'Disease', 'MESH:D009369', (214, 223)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (134, 150)) ('paraganglioma', 'Disease', (155, 168)) ('succinate dehydrogenase', 'Gene', (273, 296)) ('isocitrate dehydrogenase', 'Gene', '3417', (52, 76)) ('paraganglioma', 'Disease', 'MESH:D010235', (155, 168)) ('mutations', 'Var', (229, 238)) ('described', 'Reg', (201, 210)) ('IDH', 'Gene', '3417', (358, 361)) ('mutations', 'Var', (39, 48)) ('isocitrate dehydrogenase', 'Gene', (332, 356)) ('neoplasms', 'Disease', (214, 223)) ('succinate dehydrogenase', 'Gene', '6390', (101, 124)) ('fumarate hydratase', 'Gene', '2271', (78, 96)) ('fumarate hydratase', 'Gene', (304, 322)) ('paraganglioma', 'Phenotype', 'HP:0002668', (155, 168)) ('SDH', 'Gene', '6390', (298, 301)) ('Krebs', 'Chemical', '-', (246, 251)) ('isocitrate dehydrogenase', 'Gene', (52, 76)) ('succinate dehydrogenase', 'Gene', '6390', (273, 296)) ('succinate dehydrogenase', 'Gene', (101, 124)) ('isocitrate dehydrogenase', 'Gene', '3417', (332, 356)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (134, 150)) 107728 30050099 In turn, accumulation of oncometabolites succinate, fumarate, and 2-hydroxyglutarate can be employed to identify tumors with those mutations. ('mutations', 'Var', (131, 140)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (66, 84)) ('tumors', 'Disease', (113, 119)) ('tumors', 'Disease', 'MESH:D009369', (113, 119)) ('fumarate', 'Chemical', 'MESH:D005650', (52, 60)) ('succinate', 'MPA', (41, 50)) ('accumulation', 'MPA', (9, 21)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('fumarate', 'MPA', (52, 60)) ('succinate', 'Chemical', 'MESH:D019802', (41, 50)) ('tumors', 'Phenotype', 'HP:0002664', (113, 119)) 107730 30050099 Aberrant Krebs cycle metabolomes identified rare cases of PPGLs with germline mutations in FH and somatic mutations in IDHx and SDHx, including the first case of a somatic IDH2 mutation in PPGL. ('IDH2', 'Gene', '3418', (172, 176)) ('PPGLs', 'Gene', (58, 63)) ('Aberrant Krebs cycle', 'Phenotype', 'HP:0000816', (0, 20)) ('IDHx', 'Chemical', '-', (119, 123)) ('mutations', 'Var', (78, 87)) ('FH', 'Gene', '2271', (91, 93)) ('SDHx', 'Chemical', '-', (128, 132)) ('Krebs', 'Chemical', '-', (9, 14)) ('IDHx', 'Gene', (119, 123)) ('mutations', 'Var', (106, 115)) ('IDH2', 'Gene', (172, 176)) ('SDHx', 'Gene', (128, 132)) 107731 30050099 Metabolomics also reliably identified PPGLs with SDHx loss-of-function (LOF) mutations. ('mutations', 'Var', (77, 86)) ('SDHx', 'Chemical', '-', (49, 53)) ('SDHx', 'Gene', (49, 53)) ('PPGLs', 'Gene', (38, 43)) ('loss-of-function', 'NegReg', (54, 70)) 107732 30050099 Therefore we utilized tumor metabolite profiles to further classify variants of unknown significance in SDHx, thereby enabling missense-variants associated with SDHx LOF to be distinguished from benign variants. ('variants', 'Var', (68, 76)) ('LOF', 'NegReg', (166, 169)) ('tumor', 'Disease', 'MESH:D009369', (22, 27)) ('SDHx', 'Gene', (161, 165)) ('tumor', 'Phenotype', 'HP:0002664', (22, 27)) ('SDHx', 'Chemical', '-', (161, 165)) ('SDHx', 'Chemical', '-', (104, 108)) ('SDHx', 'Gene', (104, 108)) ('tumor', 'Disease', (22, 27)) ('missense-variants', 'Var', (127, 144)) 107733 30050099 We propose incorporation of metabolome data into the diagnostics algorithm in PPGLs to guide genetic testing and variant interpretation and to help identify rare cases with mutations in FH and IDHx. ('IDHx', 'Chemical', '-', (193, 197)) ('PPGLs', 'Gene', (78, 83)) ('FH', 'Gene', '2271', (186, 188)) ('IDHx', 'Gene', (193, 197)) ('mutations', 'Var', (173, 182)) 107734 30050099 Mutations in Krebs cycle-related genes occur in different tumor entities, which hence share a common mechanism of tumorigenesis and might also respond to similar treatment strategies. ('Krebs', 'Gene', (13, 18)) ('tumor', 'Disease', (58, 63)) ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('tumor', 'Phenotype', 'HP:0002664', (58, 63)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('Krebs', 'Chemical', '-', (13, 18)) ('tumor', 'Disease', (114, 119)) ('Mutations', 'Var', (0, 9)) ('tumor', 'Disease', 'MESH:D009369', (58, 63)) ('occur', 'Reg', (39, 44)) 107735 30050099 Currently, there are nine genes encoding several different Krebs cycle enzymes indicated as tumor drivers: Fumarate hydratase (FH) mutations are associated with renal cell carcinomas (RCC), leiomyomas, and pheochromocytomas and paragangliomas (PPGLs). ('leiomyomas', 'Disease', 'MESH:D007889', (190, 200)) ('tumor', 'Disease', 'MESH:D009369', (92, 97)) ('Fumarate hydratase', 'Gene', (107, 125)) ('Krebs', 'Chemical', '-', (59, 64)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (161, 182)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('Fumarate hydratase', 'Gene', '2271', (107, 125)) ('paraganglioma', 'Phenotype', 'HP:0002668', (228, 241)) ('paragangliomas', 'Phenotype', 'HP:0002668', (228, 242)) ('renal cell carcinomas', 'Disease', (161, 182)) ('RCC', 'Disease', (184, 187)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (161, 182)) ('gliomas', 'Phenotype', 'HP:0009733', (235, 242)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (206, 223)) ('carcinoma', 'Phenotype', 'HP:0030731', (172, 181)) ('mutations', 'Var', (131, 140)) ('carcinomas', 'Phenotype', 'HP:0030731', (172, 182)) ('RCC', 'Disease', 'MESH:C538614', (184, 187)) ('leiomyomas', 'Disease', (190, 200)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (206, 242)) ('associated', 'Reg', (145, 155)) ('tumor', 'Disease', (92, 97)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (206, 222)) ('FH', 'Gene', '2271', (127, 129)) 107736 30050099 Mutations in isocitrate dehydrogenase genes 1 or 2 (IDH1/2) occur in gliomas, acute myeloid leukemia, cholangiocarcinomas, and rarely also in PPGL. ('gliomas', 'Disease', 'MESH:D005910', (69, 76)) ('leukemia', 'Phenotype', 'HP:0001909', (92, 100)) ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (78, 100)) ('gliomas', 'Disease', (69, 76)) ('gliomas', 'Phenotype', 'HP:0009733', (69, 76)) ('carcinoma', 'Phenotype', 'HP:0030731', (111, 120)) ('carcinomas', 'Phenotype', 'HP:0030731', (111, 121)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (84, 100)) ('acute myeloid leukemia', 'Disease', (78, 100)) ('cholangiocarcinomas', 'Disease', 'MESH:D018281', (102, 121)) ('IDH1/2', 'Gene', '3417;3418', (52, 58)) ('isocitrate dehydrogenase', 'Gene', (13, 37)) ('Mutations', 'Var', (0, 9)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (78, 100)) ('isocitrate dehydrogenase', 'Gene', '3417', (13, 37)) ('cholangiocarcinomas', 'Disease', (102, 121)) ('IDH1/2', 'Gene', (52, 58)) ('occur', 'Reg', (60, 65)) 107737 30050099 Mutations in any of the five succinate dehydrogenase subunits (SDHx) or accessory proteins can lead to gastrointestinal stromal tumors, RCC, PPGL, neuroblastoma, and pituitary tumors. ('tumor', 'Phenotype', 'HP:0002664', (128, 133)) ('pituitary tumors', 'Disease', 'MESH:D010911', (166, 182)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (103, 134)) ('succinate dehydrogenase', 'Gene', '6390', (29, 52)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (103, 134)) ('Mutations', 'Var', (0, 9)) ('PPGL', 'Disease', (141, 145)) ('pituitary tumors', 'Disease', (166, 182)) ('gastrointestinal stromal tumors', 'Disease', (103, 134)) ('tumors', 'Phenotype', 'HP:0002664', (176, 182)) ('SDHx', 'Gene', (63, 67)) ('neuroblastoma', 'Disease', (147, 160)) ('succinate dehydrogenase', 'Gene', (29, 52)) ('RCC', 'Disease', (136, 139)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (147, 160)) ('tumor', 'Phenotype', 'HP:0002664', (176, 181)) ('lead to', 'Reg', (95, 102)) ('neuroblastoma', 'Disease', 'MESH:D009447', (147, 160)) ('SDHx', 'Chemical', '-', (63, 67)) ('tumors', 'Phenotype', 'HP:0002664', (128, 134)) ('RCC', 'Disease', 'MESH:C538614', (136, 139)) 107739 30050099 In PPGLs, catecholamine-producing tumors originating from adrenal or extra-adrenal chromaffin tissue, tumor development has been ascribed to mutations in more than 20 susceptibility genes, with 30-40% of PPGLs having a hereditary background. ('tumors', 'Disease', (34, 40)) ('tumors', 'Disease', 'MESH:D009369', (34, 40)) ('tumor', 'Disease', (34, 39)) ('mutations', 'Var', (141, 150)) ('catecholamine', 'Chemical', 'MESH:D002395', (10, 23)) ('tumors', 'Phenotype', 'HP:0002664', (34, 40)) ('tumor', 'Disease', 'MESH:D009369', (102, 107)) ('chromaffin', 'Chemical', '-', (83, 93)) ('tumor', 'Disease', 'MESH:D009369', (34, 39)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) ('tumor', 'Disease', (102, 107)) ('PPGLs', 'Gene', (3, 8)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) 107744 30050099 We and others have already established the succinate:fumarate ratio as a diagnostically highly-accurate functional indicator of pathogenic SDHx-variants. ('fumarate', 'Chemical', 'MESH:D005650', (53, 61)) ('SDHx', 'Chemical', '-', (139, 143)) ('succinate', 'Chemical', 'MESH:D019802', (43, 52)) ('SDHx-variants', 'Gene', (139, 152)) ('SDHx-variants', 'Var', (139, 152)) ('succinate:fumarate ratio', 'MPA', (43, 67)) 107745 30050099 Strong elevations of fumarate as a consequence of loss-of-function mutations in FH are well-known from RCC and leiomyomas, and have also been described for PPGL. ('RCC', 'Disease', 'MESH:C538614', (103, 106)) ('RCC', 'Disease', (103, 106)) ('leiomyomas', 'Disease', (111, 121)) ('FH', 'Gene', '2271', (80, 82)) ('fumarate', 'Chemical', 'MESH:D005650', (21, 29)) ('mutations', 'Var', (67, 76)) ('fumarate', 'MPA', (21, 29)) ('elevations', 'PosReg', (7, 17)) ('loss-of-function', 'NegReg', (50, 66)) ('leiomyomas', 'Disease', 'MESH:D007889', (111, 121)) 107746 30050099 Somatic hotspot mutations of codons R132 and R172 within IDH1 and IDH2, respectively, lead to a gain-of-function responsible for the production of the D-enantiomer of 2HG, D-2HG. ('IDH2', 'Gene', '3418', (66, 70)) ('R172', 'Var', (45, 49)) ('mutations', 'Var', (16, 25)) ('IDH1', 'Gene', (57, 61)) ('gain-of-function', 'PosReg', (96, 112)) ('IDH1', 'Gene', '3417', (57, 61)) ('IDH2', 'Gene', (66, 70)) 107750 30050099 The importance of correct classification of gene-variants is emphasized by the example of RET Y791F, a variant previously associated with the occurrence of medullary thyroid carcinoma. ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (166, 183)) ('thyroid carcinoma', 'Disease', (166, 183)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (156, 183)) ('RET', 'Gene', '5979', (90, 93)) ('Y791F', 'Mutation', 'rs77724903', (94, 99)) ('RET', 'Gene', (90, 93)) ('carcinoma', 'Phenotype', 'HP:0030731', (174, 183)) ('Y791F', 'Var', (94, 99)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (166, 183)) 107776 30050099 Subcluster IIa was characterized by low levels of the aforementioned metabolites and contained primarily tumors with driver mutations in the hypoxia signaling axis (VHL, EPAS1), as well as tumors with FH and IDHx mutations (characterized below in detail). ('tumors', 'Disease', (105, 111)) ('tumors', 'Disease', 'MESH:D009369', (105, 111)) ('mutations', 'Var', (124, 133)) ('IDHx', 'Chemical', '-', (208, 212)) ('VHL', 'Disease', 'MESH:D006623', (165, 168)) ('tumors', 'Disease', (189, 195)) ('VHL', 'Disease', (165, 168)) ('FH', 'Gene', '2271', (201, 203)) ('tumors', 'Disease', 'MESH:D009369', (189, 195)) ('hypoxia', 'Disease', 'MESH:D000860', (141, 148)) ('tumors', 'Phenotype', 'HP:0002664', (189, 195)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('levels', 'MPA', (40, 46)) ('EPAS1', 'Gene', '2034', (170, 175)) ('hypoxia', 'Disease', (141, 148)) ('tumors', 'Phenotype', 'HP:0002664', (105, 111)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) ('EPAS1', 'Gene', (170, 175)) 107777 30050099 Subcluster IIb, characterized by higher citrate, isocitrate, and cis-aconitate levels, includes predominantly tumors with driver mutations in the kinase signaling pathway (RET, NF1, TMEM127). ('cis-aconitate', 'Chemical', '-', (65, 78)) ('tumors', 'Phenotype', 'HP:0002664', (110, 116)) ('cis-aconitate levels', 'MPA', (65, 85)) ('TMEM127', 'Gene', (182, 189)) ('isocitrate', 'Chemical', 'MESH:C034219', (49, 59)) ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('isocitrate', 'MPA', (49, 59)) ('tumors', 'Disease', (110, 116)) ('citrate', 'MPA', (40, 47)) ('TMEM127', 'Gene', '55654', (182, 189)) ('RET', 'Gene', '5979', (172, 175)) ('citrate', 'Chemical', 'MESH:D019343', (52, 59)) ('NF1', 'Gene', '4763', (177, 180)) ('tumors', 'Disease', 'MESH:D009369', (110, 116)) ('NF1', 'Gene', (177, 180)) ('higher', 'PosReg', (33, 39)) ('mutations', 'Var', (129, 138)) ('RET', 'Gene', (172, 175)) ('kinase signaling pathway', 'Pathway', (146, 170)) ('citrate', 'Chemical', 'MESH:D019343', (40, 47)) 107785 30050099 In patient #2 we identified a somatic IDH2 c.514A>G (R172G) mutation, to our knowledge the first IDH2-mutation described in PPGL to date (Figure 2E). ('IDH2', 'Gene', (97, 101)) ('IDH2', 'Gene', '3418', (97, 101)) ('patient', 'Species', '9606', (3, 10)) ('c.514A>G', 'Var', (43, 51)) ('c.514A>G', 'Mutation', 'rs1057519906', (43, 51)) ('IDH2', 'Gene', (38, 42)) ('R172G', 'Mutation', 'rs1057519906', (53, 58)) ('IDH2', 'Gene', '3418', (38, 42)) 107787 30050099 The other seven PPGLs with moderately elevated 2HG-levels and normal D-2HG to L-2HG ratios did not have mutations in any of the genes of our NGS-panel; however, in five PPGLs we identified pathogenic mutations in other known susceptibility genes, including NF1, HRAS, ATRX, and VHL (Figure 2F). ('HRAS', 'Gene', '3265', (262, 266)) ('mutations', 'Var', (200, 209)) ('HRAS', 'Gene', (262, 266)) ('VHL', 'Disease', 'MESH:D006623', (278, 281)) ('ATRX', 'Gene', (268, 272)) ('VHL', 'Disease', (278, 281)) ('NF1', 'Gene', '4763', (257, 260)) ('NF1', 'Gene', (257, 260)) ('ATRX', 'Gene', '546', (268, 272)) ('pathogenic', 'Reg', (189, 199)) 107792 30050099 In all three patients with aberrant tumor fumarate:malate, NGS revealed heterozygous germline-variants in FH: NM_000143.3:c.700A>G p.(Thr234Ala), c.908T>C p.(Leu303Ser), and c.816_836del p.(Ala273_Val279del) (Figure 3A-C). ('p.(Ala273_Val279del)', 'Mutation', 'p.273,279del)', (187, 207)) ('FH', 'Gene', '2271', (106, 108)) ('p.(Thr234Ala)', 'SUBSTITUTION', 'None', (131, 144)) ('c.908T>C', 'Mutation', 'rs201502246', (146, 154)) ('patients', 'Species', '9606', (13, 21)) ('p.(Leu303Ser)', 'SUBSTITUTION', 'None', (155, 168)) ('p.(Thr234Ala', 'Var', (131, 143)) ('p.(Leu303Ser', 'Var', (155, 167)) ('c.816_836del', 'Mutation', 'c.816_836del', (174, 186)) ('tumor', 'Disease', 'MESH:D009369', (36, 41)) ('fumarate', 'Chemical', 'MESH:D005650', (42, 50)) ('tumor', 'Phenotype', 'HP:0002664', (36, 41)) ('NM_000143.3:c.700A>G', 'Mutation', 'rs372505976', (110, 130)) ('malate', 'Chemical', 'MESH:C030298', (51, 57)) ('tumor', 'Disease', (36, 41)) ('c.816_836del p.(Ala273_Val279del', 'Var', (174, 206)) 107795 30050099 The FH-variants in patients #10 and #11 - p.(Thr234Ala) and p.(Leu303Ser) - are both missense-variants predicted to be damaging by three different in silico tools (Polyphen2/ SIFT/ MutationTaster). ('SIFT', 'Disease', 'None', (175, 179)) ('FH', 'Gene', '2271', (4, 6)) ('patients', 'Species', '9606', (19, 27)) ('p.(Thr234Ala', 'Var', (42, 54)) ('p.(Leu303Ser', 'Var', (60, 72)) ('p.(Leu303Ser)', 'SUBSTITUTION', 'None', (60, 73)) ('p.(Thr234Ala)', 'SUBSTITUTION', 'None', (42, 55)) ('SIFT', 'Disease', (175, 179)) 107796 30050099 FH p.(Thr234Ala) is rated with pathogenic/uncertain significance in ClinVar and dbSNP (rs372505976) and FH p.(Leu303Ser) as a VUS (rs201502246). ('FH', 'Gene', '2271', (0, 2)) ('rs201502246', 'Mutation', 'rs201502246', (131, 142)) ('dbSNP', 'Disease', (80, 85)) ('p.(Leu303Ser)', 'SUBSTITUTION', 'None', (107, 120)) ('p.(Thr234Ala', 'Var', (3, 15)) ('FH', 'Gene', '2271', (104, 106)) ('rs372505976', 'Var', (87, 98)) ('ClinVar', 'Disease', (68, 75)) ('p.(Leu303Ser', 'Var', (107, 119)) ('p.(Thr234Ala)', 'SUBSTITUTION', 'None', (3, 16)) ('rs372505976', 'Mutation', 'rs372505976', (87, 98)) ('rs201502246', 'Var', (131, 142)) 107797 30050099 The variant FH p.(Leu303Ser) was found in a girl together with a second compound heterozygous variant in FH, who suffered from autosomal-recessive fumarase deficiency (LOVD #0000116260). ('autosomal-recessive fumarase deficiency', 'Disease', 'MESH:C538191', (127, 166)) ('FH', 'Gene', '2271', (105, 107)) ('girl', 'Species', '9606', (44, 48)) ('FH', 'Gene', '2271', (12, 14)) ('autosomal-recessive fumarase deficiency', 'Disease', (127, 166)) ('p.(Leu303Ser)', 'SUBSTITUTION', 'None', (15, 28)) ('fumarase deficiency', 'Phenotype', 'HP:0003536', (147, 166)) ('p.(Leu303Ser', 'Var', (15, 27)) 107799 30050099 The third patient (#12) carried an in-frame deletion leading to loss of 6 amino-acids in FH (p.(Ala273_Val279del)). ('p.(Ala273_Val279del)', 'Mutation', 'p.273,279del)', (93, 113)) ('p.(Ala273_Val279del', 'Var', (93, 112)) ('patient', 'Species', '9606', (10, 17)) ('loss', 'NegReg', (64, 68)) ('FH', 'Gene', '2271', (89, 91)) 107810 30050099 In our cohort of 391 patients we identified 73 individuals having PPGLs with aberrant succinate:fumarate ratios. ('succinate', 'Chemical', 'MESH:D019802', (86, 95)) ('PPGLs', 'Disease', (66, 71)) ('fumarate', 'Chemical', 'MESH:D005650', (96, 104)) ('patients', 'Species', '9606', (21, 29)) ('succinate:fumarate ratios', 'MPA', (86, 111)) ('aberrant', 'Var', (77, 85)) 107813 30050099 stop gain, frameshift, or exon-spanning deletions) in one of the SDHx-genes in the germline. ('SDHx-genes', 'Gene', (65, 75)) ('frameshift', 'Var', (11, 21)) ('exon-spanning deletions', 'Var', (26, 49)) ('SDHx', 'Chemical', '-', (65, 69)) 107814 30050099 Furthermore, another 32 patients had missense SDHx-variants in the germline that are well established as pathogenic or likely pathogenic (n=21) or would be currently classified as VUS (n=10) or likely benign (1), according to ACMG-AMP guidelines (see tables 1, 2 and supplementary material 3). ('SDHx', 'Chemical', '-', (46, 50)) ('missense', 'Var', (37, 45)) ('AMP', 'Chemical', 'MESH:D000249', (231, 234)) ('SDHx-variants', 'Gene', (46, 59)) ('SDHx-variants', 'Var', (46, 59)) ('patients', 'Species', '9606', (24, 32)) 107815 30050099 Additionally, three patients (#57, 77, 92) had tumors of metabolic cluster I with confirmed pathogenic or likely pathogenic SDHx-mutations but with succinate:fumarate ratios below the cut-off. ('succinate', 'Chemical', 'MESH:D019802', (148, 157)) ('tumors', 'Disease', (47, 53)) ('tumors', 'Disease', 'MESH:D009369', (47, 53)) ('SDHx-mutations', 'Var', (124, 138)) ('fumarate', 'Chemical', 'MESH:D005650', (158, 166)) ('SDHx-mutations', 'Gene', (124, 138)) ('tumors', 'Phenotype', 'HP:0002664', (47, 53)) ('patients', 'Species', '9606', (20, 28)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('succinate:fumarate ratios', 'MPA', (148, 173)) ('SDHx', 'Chemical', '-', (124, 128)) 107816 30050099 In seven of the 73 patients with elevated succinate:fumarate ratios, no SDHx-variants were identified in the germline. ('succinate', 'Chemical', 'MESH:D019802', (42, 51)) ('patients', 'Species', '9606', (19, 27)) ('SDHx-variants', 'Gene', (72, 85)) ('SDHx-variants', 'Var', (72, 85)) ('elevated succinate', 'Phenotype', 'HP:0020149', (33, 51)) ('fumarate', 'Chemical', 'MESH:D005650', (52, 60)) ('succinate:fumarate ratios', 'MPA', (42, 67)) ('SDHx', 'Chemical', '-', (72, 76)) 107817 30050099 In three of those patients we identified somatic SDHx-variants: a stop-mutation (SDHB p.Tyr61*, #30); a startloss-mutation (SDHD c.3G>T, #70), and a missense-mutation (SDHB p.(Pro155Arg), #105) (supplementary material 3). ('p.(Pro155Arg)', 'SUBSTITUTION', 'None', (173, 186)) ('SDHD', 'Gene', '6392', (124, 128)) ('p.Tyr61*', 'Var', (86, 94)) ('SDHx-variants', 'Gene', (49, 62)) ('SDHB', 'Gene', '6390', (81, 85)) ('p.(Pro155Arg', 'Var', (173, 185)) ('SDHx', 'Chemical', '-', (49, 53)) ('SDHB', 'Gene', (81, 85)) ('patients', 'Species', '9606', (18, 26)) ('p.Tyr61*', 'SUBSTITUTION', 'None', (86, 94)) ('c.3G>T', 'Mutation', 'c.3G>T', (129, 135)) ('SDHB', 'Gene', '6390', (168, 172)) ('SDHD', 'Gene', (124, 128)) ('SDHB', 'Gene', (168, 172)) 107821 30050099 The seventh case had a pathogenic germline RET c.1852T>G, p.(Cys618Gly) mutation. ('c.1852T>G', 'Var', (47, 56)) ('RET', 'Gene', (43, 46)) ('p.(Cys618Gly)', 'Mutation', 'rs76262710', (58, 71)) ('p.(Cys618Gly', 'Var', (58, 70)) ('pathogenic', 'Reg', (23, 33)) ('RET', 'Gene', '5979', (43, 46)) ('c.1852T>G', 'Mutation', 'rs76262710', (47, 56)) 107824 30050099 He had a likely benign germline missense-variant SDHD c.34G>A, p.(Gly12Ser), which is listed 2035x heterozygously and 12x homozygously in the gnomAD database and has been described as a rare polymorphism. ('p.(Gly12Ser)', 'Mutation', 'rs34677591', (63, 75)) ('c.34G>A', 'Var', (54, 61)) ('SDHD', 'Gene', '6392', (49, 53)) ('c.34G>A', 'Mutation', 'rs34677591', (54, 61)) ('SDHD', 'Gene', (49, 53)) 107826 30050099 Since germline-testing was inconclusive in this case, we analyzed tumor tissue and identified a pathogenic somatic loss-of-function variant in SDHD NM_003002.3: c.337_340del, p.(Asp113Metfs*21) in 41.47% of reads. ('c.337_340del', 'DELETION', 'None', (161, 173)) ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('p.(Asp113Metfs*21', 'Var', (175, 192)) ('tumor', 'Disease', (66, 71)) ('c.337_340del', 'Var', (161, 173)) ('p.(Asp113Metfs*21)', 'FRAMESHIFT', 'None', (175, 193)) ('SDHD', 'Gene', (143, 147)) ('SDHD', 'Gene', '6392', (143, 147)) ('loss-of-function', 'NegReg', (115, 131)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) 107827 30050099 Allele frequency of the germline-variant c.34G>A was 69.7% in the tumor, indicating LOH of the wild-type SDHD-allele and that the somatic and pathogenic SDHD-variant p.(Asp113Metfs*21) occurred in the allele having the germline c.34G>A variant. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('c.34G>A', 'Var', (41, 48)) ('SDHD', 'Gene', '6392', (105, 109)) ('LOH', 'NegReg', (84, 87)) ('SDHD', 'Gene', (153, 157)) ('SDHD', 'Gene', '6392', (153, 157)) ('tumor', 'Disease', (66, 71)) ('c.34G>A', 'Mutation', 'rs34677591', (41, 48)) ('c.34G>A', 'Var', (228, 235)) ('SDHD', 'Gene', (105, 109)) ('p.(Asp113Metfs*21', 'Var', (166, 183)) ('c.34G>A', 'Mutation', 'rs34677591', (228, 235)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) ('p.(Asp113Metfs*21)', 'FRAMESHIFT', 'None', (166, 184)) 107828 30050099 We therefore assume that the somatic SDHD-variant p.(Asp113Metfs*21) is responsible for SDH deficiency in this tumor and that the germline-variant is likely benign and coincidently observed together with the aberrant metabolite profile. ('tumor', 'Disease', 'MESH:D009369', (111, 116)) ('SDH deficiency', 'Disease', (88, 102)) ('p.(Asp113Metfs*21)', 'FRAMESHIFT', 'None', (50, 68)) ('SDHD', 'Gene', '6392', (37, 41)) ('tumor', 'Phenotype', 'HP:0002664', (111, 116)) ('SDH deficiency', 'Disease', 'MESH:D007153', (88, 102)) ('SDHD', 'Gene', (37, 41)) ('tumor', 'Disease', (111, 116)) ('p.(Asp113Metfs*21', 'Var', (50, 67)) ('responsible', 'Reg', (72, 83)) 107829 30050099 In ten patients with elevated succinate:fumarate ratios we identified eight different missense-variants in SDHx (including one somatic) that would currently be classified as VUS. ('elevated succinate', 'Phenotype', 'HP:0020149', (21, 39)) ('missense-variants', 'Var', (86, 103)) ('SDHx', 'Gene', (107, 111)) ('succinate', 'Chemical', 'MESH:D019802', (30, 39)) ('SDHx', 'Chemical', '-', (107, 111)) ('patients', 'Species', '9606', (7, 15)) ('fumarate', 'Chemical', 'MESH:D005650', (40, 48)) 107831 30050099 Three are known benign or likely benign SDHx-variants (two missense, one silent), in line with the normal succinate:fumarate ratios. ('SDHx', 'Chemical', '-', (40, 44)) ('fumarate', 'Chemical', 'MESH:D005650', (116, 124)) ('missense', 'Var', (59, 67)) ('succinate', 'Chemical', 'MESH:D019802', (106, 115)) ('SDHx-variants', 'Gene', (40, 53)) 107839 30050099 Further analyses revealed somatic pathogenic mutations in VHL and EPAS1 in two cases (#14, 50) and we would reclassify the SDHx-variants as likely benign (Table 2). ('mutations', 'Var', (45, 54)) ('VHL', 'Disease', (58, 61)) ('VHL', 'Disease', 'MESH:D006623', (58, 61)) ('SDHx', 'Chemical', '-', (123, 127)) ('EPAS1', 'Gene', '2034', (66, 71)) ('pathogenic', 'Reg', (34, 44)) ('EPAS1', 'Gene', (66, 71)) 107841 30050099 In a patient (#78) with a potential splice-site-mutation in SDHD (c.169+5G>T) metabolomics of a second tumor specimen revealed highly elevated succinate:fumarate ratios and we would altogether reclassify this variant as likely pathogenic. ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('fumarate', 'Chemical', 'MESH:D005650', (153, 161)) ('patient', 'Species', '9606', (5, 12)) ('c.169+5G>T', 'Mutation', 'c.169+5G>T', (66, 76)) ('succinate:fumarate ratios', 'MPA', (143, 168)) ('SDHD', 'Gene', (60, 64)) ('tumor', 'Disease', (103, 108)) ('SDHD', 'Gene', '6392', (60, 64)) ('tumor', 'Disease', 'MESH:D009369', (103, 108)) ('elevated', 'PosReg', (134, 142)) ('c.169+5G>T', 'Var', (66, 76)) ('elevated succinate', 'Phenotype', 'HP:0020149', (134, 152)) ('succinate', 'Chemical', 'MESH:D019802', (143, 152)) 107845 30050099 Mutations in Krebs cycle-related genes are established drivers of tumor development, acting through the inhibition of alpha-ketoglutarate-dependent enzymes. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('inhibition', 'NegReg', (104, 114)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (118, 137)) ('tumor', 'Disease', (66, 71)) ('Krebs', 'Chemical', '-', (13, 18)) ('Mutations', 'Var', (0, 9)) ('tumor', 'Disease', 'MESH:D009369', (66, 71)) ('alpha-ketoglutarate-dependent enzymes', 'Enzyme', (118, 155)) 107846 30050099 Identifying such driver mutations has important implications for the surveillance of patients at risk of recurrence or metastasis or of carriers of germline-variants who are at risk of tumor development. ('tumor', 'Disease', (185, 190)) ('recurrence', 'CPA', (105, 115)) ('patients', 'Species', '9606', (85, 93)) ('tumor', 'Disease', 'MESH:D009369', (185, 190)) ('metastasis', 'CPA', (119, 129)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('mutations', 'Var', (24, 33)) 107853 30050099 Recent examples are the identification of SDHC-promoter-methylation and a GOT2 activating mutation in PPGL with a similar clinical presentation as in SDHx-mutated PPGLs. ('GOT2', 'Gene', '2806', (74, 78)) ('activating', 'PosReg', (79, 89)) ('SDHC', 'Gene', (42, 46)) ('GOT2', 'Gene', (74, 78)) ('SDHx', 'Chemical', '-', (150, 154)) ('PPGL', 'Gene', (102, 106)) ('SDHC', 'Gene', '6391', (42, 46)) ('mutation', 'Var', (90, 98)) 107873 30050099 Based on our experiences, we propose a cumulative approach for comprehensive PPGL diagnostics, including sequencing of germline and tumor tissue, as well as metabolic analyses in patients with inconclusive results of genetic testing; particularly in cases with VUS in Krebs cycle associated genes and unsolved cases to guide diagnostic decision making. ('tumor', 'Disease', 'MESH:D009369', (132, 137)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('VUS in', 'Var', (261, 267)) ('tumor', 'Disease', (132, 137)) ('Krebs', 'Chemical', '-', (268, 273)) ('patients', 'Species', '9606', (179, 187)) 107876 30456751 Macronodular adrenal hyperplasia was linked to ARMC5 defects and new genes were found to be involved in adrenocortical cancer (ACC). ('adrenocortical cancer', 'Disease', (104, 125)) ('adrenal hyperplasia', 'Phenotype', 'HP:0008221', (13, 32)) ('Macronodular adrenal hyperplasia', 'Phenotype', 'HP:0008231', (0, 32)) ('ARMC5', 'Gene', (47, 52)) ('defects', 'Var', (53, 60)) ('adrenocortical cancer', 'Disease', 'MESH:D000306', (104, 125)) ('ARMC5', 'Gene', '79798', (47, 52)) ('ACC', 'Phenotype', 'HP:0006744', (127, 130)) ('linked', 'Reg', (37, 43)) ('adrenal hyperplasia', 'Disease', (13, 32)) ('cancer', 'Phenotype', 'HP:0002664', (119, 125)) ('adrenal hyperplasia', 'Disease', 'MESH:D000312', (13, 32)) 107893 30456751 Aberrantly increased cAMP-PKA signaling is implicated in the pathogenesis of most benign cortisol-producing tumors of the adrenal gland. ('Aberrantly', 'Var', (0, 10)) ('increased', 'PosReg', (11, 20)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('tumors of the adrenal gland', 'Phenotype', 'HP:0100631', (108, 135)) ('implicated', 'Reg', (43, 53)) ('cAMP', 'Gene', (21, 25)) ('cAMP', 'Gene', '820', (21, 25)) ('cortisol', 'Chemical', 'MESH:D006854', (89, 97)) ('tumors', 'Disease', (108, 114)) ('tumors', 'Disease', 'MESH:D009369', (108, 114)) ('tumors', 'Phenotype', 'HP:0002664', (108, 114)) 107897 30456751 These mosaic gain-of-function mutations lead to constitutive activation of adenylyl cyclase, with such manifestations as cafe-au-lait skin macules, skeletal fibrous dysplasia, and multiple endocrinopathies, including precocious puberty, testicular and thyroid lesions, phosphate wasting, growth hormone excess, and, rarely, neonatal hypercortisolism. ('skeletal fibrous dysplasia', 'Disease', (148, 174)) ('lait skin', 'Phenotype', 'HP:0000973', (129, 138)) ('cafe-au-lait skin macules', 'Disease', (121, 146)) ('multiple endocrinopathies', 'Disease', (180, 205)) ('gain-of-function', 'PosReg', (13, 29)) ('thyroid lesions', 'Disease', 'MESH:D013959', (252, 267)) ('growth hormone', 'Chemical', 'MESH:D013006', (288, 302)) ('skeletal fibrous dysplasia', 'Disease', 'MESH:C537974', (148, 174)) ('growth hormone excess', 'Phenotype', 'HP:0000845', (288, 309)) ('cafe-au-lait skin', 'Phenotype', 'HP:0000957', (121, 138)) ('growth hormone excess', 'Disease', (288, 309)) ('macules', 'Phenotype', 'HP:0012733', (139, 146)) ('adenylyl cyclase', 'Enzyme', (75, 91)) ('hypercortisolism', 'Phenotype', 'HP:0003118', (333, 349)) ('neonatal hypercortisolism', 'Disease', 'MESH:D003480', (324, 349)) ('phosphate', 'Chemical', 'MESH:D010710', (269, 278)) ('precocious puberty', 'Disease', (217, 235)) ('mutations', 'Var', (30, 39)) ('neonatal hypercortisolism', 'Disease', (324, 349)) ('phosphate wasting', 'Phenotype', 'HP:0000117', (269, 286)) ('multiple endocrinopathies', 'Disease', 'MESH:C567425', (180, 205)) ('phosphate wasting', 'Disease', (269, 286)) ('activation', 'PosReg', (61, 71)) ('thyroid lesions', 'Disease', (252, 267)) ('precocious puberty', 'Phenotype', 'HP:0000826', (217, 235)) 107903 30456751 Inactivating mutations of PRKAR1A lead to constitutive activation of the cAMP-PKA pathway through loss of regulation of the catalytic subunits of PKA. ('PRKAR1A', 'Gene', (26, 33)) ('Inactivating mutations', 'Var', (0, 22)) ('loss', 'NegReg', (98, 102)) ('cAMP', 'Gene', (73, 77)) ('cAMP', 'Gene', '820', (73, 77)) ('regulation', 'MPA', (106, 116)) ('activation', 'PosReg', (55, 65)) 107906 30456751 Mice lacking PRKAR1A specifically in the adrenal cortex develop autonomous excess cortisol secretion, dysregulated adrenocortical cell differentiation with increased proliferation and resistance to apoptosis, as well as improper maintenance and expansion of cortisol-producing fetal adrenocortical cells with regression of the adult adrenal cortex, leading to BAH and CS. ('improper', 'Var', (220, 228)) ('cortisol', 'Chemical', 'MESH:D006854', (82, 90)) ('excess', 'PosReg', (75, 81)) ('adrenocortical', 'Disease', (115, 129)) ('increased', 'PosReg', (156, 165)) ('Mice', 'Species', '10090', (0, 4)) ('excess cortisol', 'Phenotype', 'HP:0003118', (75, 90)) ('expansion of cortisol', 'Phenotype', 'HP:0003118', (245, 266)) ('leading to', 'Reg', (349, 359)) ('BAH', 'Disease', (360, 363)) ('dysregulated adrenocortical', 'Disease', (102, 129)) ('PRKAR1A', 'Gene', (13, 20)) ('CS', 'Phenotype', 'HP:0003118', (368, 370)) ('adrenocortical', 'Disease', 'MESH:D018268', (283, 297)) ('expansion', 'CPA', (245, 254)) ('cortisol', 'Chemical', 'MESH:D006854', (258, 266)) ('adrenocortical', 'Disease', (283, 297)) ('adrenocortical', 'Disease', 'MESH:D018268', (115, 129)) ('dysregulated adrenocortical', 'Disease', 'MESH:D018268', (102, 129)) ('BAH', 'Chemical', '-', (360, 363)) 107907 30456751 Mutations in cyclic nucleotide phosphodiesterases (PDEs) have also been implicated in the pathogenesis of adrenocortical tumors and CS. ('adrenocortical tumors', 'Disease', 'MESH:D018268', (106, 127)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('PDEs', 'Gene', '50940', (51, 55)) ('PDEs', 'Gene', (51, 55)) ('phosphodiesterases', 'Gene', '50940', (31, 49)) ('tumors', 'Phenotype', 'HP:0002664', (121, 127)) ('phosphodiesterases', 'Gene', (31, 49)) ('Mutations', 'Var', (0, 9)) ('adrenocortical tumors', 'Disease', (106, 127)) ('CS', 'Phenotype', 'HP:0003118', (132, 134)) ('implicated', 'Reg', (72, 82)) 107909 30456751 In a single-nucleotide polymorphism-based, genome-wide association study of individuals with micronodular adrenocortical hyperplasia not caused by genetic defects in GNAS or PRKAR1A, mutations in genetic loci harboring PDE genes were most likely to be associated with the disease, with inactivating mutations of the PDE11A gene being the most commonly linked, followed by the PDE8B gene. ('PDE', 'Gene', '50940', (219, 222)) ('PDE', 'Gene', '50940', (376, 379)) ('adrenocortical hyperplasia', 'Disease', 'MESH:D018268', (106, 132)) ('PDE8B', 'Gene', '8622', (376, 381)) ('GNAS', 'Gene', (166, 170)) ('mutations', 'Var', (183, 192)) ('PDE', 'Gene', (219, 222)) ('PRKAR1A', 'Gene', (174, 181)) ('GNAS', 'Gene', '2778', (166, 170)) ('PDE', 'Gene', (376, 379)) ('associated', 'Reg', (252, 262)) ('inactivating mutations', 'Var', (286, 308)) ('PDE', 'Gene', '50940', (316, 319)) ('genetic defects', 'Disease', (147, 162)) ('genetic defects', 'Disease', 'MESH:D030342', (147, 162)) ('PDE8B', 'Gene', (376, 381)) ('PDE', 'Gene', (316, 319)) ('adrenocortical hyperplasia', 'Disease', (106, 132)) ('PDE11A', 'Gene', (316, 322)) ('PDE11A', 'Gene', '50940', (316, 322)) 107910 30456751 In addition, two missense substitutions that are relatively frequent polymorphisms of the PDE11A gene, R804H and R867G, were found with increased frequency among individuals with adrenal lesions. ('found', 'Reg', (125, 130)) ('R804H', 'Mutation', 'rs75127279', (103, 108)) ('adrenal lesions', 'Disease', 'MESH:D000307', (179, 194)) ('R804H', 'Var', (103, 108)) ('R867G', 'Var', (113, 118)) ('PDE11A', 'Gene', (90, 96)) ('PDE11A', 'Gene', '50940', (90, 96)) ('adrenal lesions', 'Disease', (179, 194)) ('R867G', 'Mutation', 'rs61306957', (113, 118)) 107911 30456751 Furthermore, in a study aimed at identifying the presence of germline or somatic PDE11A mutations that included 117 subjects with adrenocortical tumors and 195 control subjects, a higher frequency of PDE11A mutations was found in subjects with adrenocortical tumors compared to age/sex matched controls (16% vs 10% in adrenocortical cancer, 19% vs 10% in adrenocortical adenoma, and 24% vs 9% in AIMAH). ('adrenocortical cancer', 'Disease', (318, 339)) ('mutations', 'Var', (88, 97)) ('adrenocortical tumors', 'Disease', 'MESH:D018268', (244, 265)) ('tumors', 'Phenotype', 'HP:0002664', (259, 265)) ('adrenocortical adenoma', 'Disease', 'MESH:D018246', (355, 377)) ('tumor', 'Phenotype', 'HP:0002664', (259, 264)) ('mutations', 'Var', (207, 216)) ('PDE11A', 'Gene', (200, 206)) ('PDE11A', 'Gene', '50940', (200, 206)) ('adrenocortical adenoma', 'Phenotype', 'HP:0008256', (355, 377)) ('adrenocortical tumors', 'Disease', (244, 265)) ('cancer', 'Phenotype', 'HP:0002664', (333, 339)) ('adrenocortical tumors', 'Disease', 'MESH:D018268', (130, 151)) ('PDE11A', 'Gene', (81, 87)) ('PDE11A', 'Gene', '50940', (81, 87)) ('tumors', 'Phenotype', 'HP:0002664', (145, 151)) ('adrenocortical cancer', 'Disease', 'MESH:D000306', (318, 339)) ('adrenocortical adenoma', 'Disease', (355, 377)) ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('adrenocortical tumors', 'Disease', (130, 151)) 107912 30456751 In another series of 150 patients with CNC, a higher frequency of PDE11A variants was noted in patients with CNC compared with healthy controls. ('CNC', 'Disease', (109, 112)) ('patients', 'Species', '9606', (95, 103)) ('variants', 'Var', (73, 81)) ('PDE11A', 'Gene', '50940', (66, 72)) ('patients', 'Species', '9606', (25, 33)) ('PDE11A', 'Gene', (66, 72)) 107913 30456751 Among patients with CNC, those with PPNAD and/or testicular large-cell calcifying Sertoli cell tumors (LCCSCT) were more frequently carriers of PDE11A variants compared to those without PPNAD and/or LCCSCT, respectively. ('testicular large', 'Phenotype', 'HP:0000053', (49, 65)) ('CS', 'Phenotype', 'HP:0003118', (105, 107)) ('variants', 'Var', (151, 159)) ('carriers', 'Reg', (132, 140)) ('CNC', 'Disease', (20, 23)) ('cell tumors', 'Disease', (90, 101)) ('PDE11A', 'Gene', (144, 150)) ('PDE11A', 'Gene', '50940', (144, 150)) ('CS', 'Phenotype', 'HP:0003118', (201, 203)) ('cell tumors', 'Disease', 'MESH:D005935', (90, 101)) ('patients', 'Species', '9606', (6, 14)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('Sertoli cell tumors', 'Phenotype', 'HP:0100619', (82, 101)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) 107914 30456751 This suggests that PDE11A may be a genetic modifying factor for the development of adrenal and testicular tumors in patients with CNC and PRKAR1A mutations. ('CNC', 'Gene', (130, 133)) ('adrenal and', 'Disease', (83, 94)) ('tumors', 'Phenotype', 'HP:0002664', (106, 112)) ('PDE11A', 'Gene', (19, 25)) ('PDE11A', 'Gene', '50940', (19, 25)) ('mutations', 'Var', (146, 155)) ('patients', 'Species', '9606', (116, 124)) ('testicular tumors', 'Disease', 'MESH:D013736', (95, 112)) ('adrenal and testicular tumors', 'Phenotype', 'HP:0100631', (83, 112)) ('testicular tumors', 'Phenotype', 'HP:0010788', (95, 112)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('PRKAR1A', 'Gene', (138, 145)) ('testicular tumors', 'Disease', (95, 112)) 107915 30456751 PDE11A inactivating mutations may also play a role in the development of prostate cancer. ('prostate cancer', 'Disease', (73, 88)) ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('inactivating mutations', 'Var', (7, 29)) ('prostate cancer', 'Disease', 'MESH:D011471', (73, 88)) ('play', 'Reg', (39, 43)) ('prostate cancer', 'Phenotype', 'HP:0012125', (73, 88)) ('PDE11A', 'Gene', (0, 6)) ('PDE11A', 'Gene', '50940', (0, 6)) 107916 30456751 A single germline PDE8B missense substitution was initially reported in a patient with iMAD and CS. ('patient', 'Species', '9606', (74, 81)) ('PDE8B', 'Gene', (18, 23)) ('PDE8B', 'Gene', '8622', (18, 23)) ('CS', 'Phenotype', 'HP:0003118', (96, 98)) ('missense substitution', 'Var', (24, 45)) ('iMAD', 'Disease', (87, 91)) 107917 30456751 The patient inherited the PDE8B mutation from her father, who was not diagnosed with CS but did have a phenotype consistent with mild iMAD with elevated midnight cortisol. ('PDE8B', 'Gene', (26, 31)) ('PDE8B', 'Gene', '8622', (26, 31)) ('CS', 'Phenotype', 'HP:0003118', (85, 87)) ('patient', 'Species', '9606', (4, 11)) ('cortisol', 'Chemical', 'MESH:D006854', (162, 170)) ('elevated', 'PosReg', (144, 152)) ('mild iMAD', 'Disease', (129, 138)) ('inherited', 'Reg', (12, 21)) ('mutation', 'Var', (32, 40)) 107918 30456751 In addition, in a case-control study of 216 unrelated patients with adrenocortical tumors and 192 controls, nine different PDE8B sequence changes were identified in the patients and controls, with two variations that were seen only in the patient group, demonstrating significant potential to impair protein function in vitro and in silico. ('patient', 'Species', '9606', (54, 61)) ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('patient', 'Species', '9606', (239, 246)) ('patients', 'Species', '9606', (169, 177)) ('protein', 'Protein', (300, 307)) ('PDE8B', 'Gene', (123, 128)) ('patients', 'Species', '9606', (54, 62)) ('adrenocortical tumors', 'Disease', (68, 89)) ('PDE8B', 'Gene', '8622', (123, 128)) ('tumors', 'Phenotype', 'HP:0002664', (83, 89)) ('impair', 'NegReg', (293, 299)) ('patient', 'Species', '9606', (169, 176)) ('changes', 'Var', (138, 145)) ('adrenocortical tumors', 'Disease', 'MESH:D018268', (68, 89)) 107919 30456751 Furthermore, in a study of samples from 27 patients with adrenocortical tumors without mutations in GNAS, PRKAR1A, PDE11A, or PDE8B, abnormalities of the cAMP-signaling pathway were found, with mutation-negative ACAs having significantly decreased PDE activity. ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('PDE', 'Gene', (126, 129)) ('PRKAR1A', 'Gene', (106, 113)) ('cAMP', 'Gene', '820', (154, 158)) ('adrenocortical tumors', 'Disease', (57, 78)) ('mutation-negative', 'Var', (194, 211)) ('PDE11A', 'Gene', '50940', (115, 121)) ('PDE', 'Gene', '50940', (115, 118)) ('PDE11A', 'Gene', (115, 121)) ('PDE8B', 'Gene', (126, 131)) ('GNAS', 'Gene', (100, 104)) ('PDE', 'Gene', '50940', (248, 251)) ('decreased', 'NegReg', (238, 247)) ('PDE', 'Gene', (115, 118)) ('GNAS', 'Gene', '2778', (100, 104)) ('patients', 'Species', '9606', (43, 51)) ('PDE', 'Gene', (248, 251)) ('cAMP', 'Gene', (154, 158)) ('activity', 'MPA', (252, 260)) ('adrenocortical tumors', 'Disease', 'MESH:D018268', (57, 78)) ('PDE', 'Gene', '50940', (126, 129)) ('PDE8B', 'Gene', '8622', (126, 131)) ('tumors', 'Phenotype', 'HP:0002664', (72, 78)) 107921 30456751 A study performing whole exome sequencing of tumor-tissue specimens from 10 patients with unilateral ACAs and overt CS revealed somatic mutations in the PRKACA gene, encoding the catalytic subunit Calpha of PKA, in 8 out of 10 adenomas. ('patients', 'Species', '9606', (76, 84)) ('tumor', 'Disease', 'MESH:D009369', (45, 50)) ('adenomas', 'Disease', (227, 235)) ('CS', 'Phenotype', 'HP:0003118', (116, 118)) ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('tumor', 'Disease', (45, 50)) ('mutations', 'Var', (136, 145)) ('PRKACA', 'Gene', (153, 159)) ('adenomas', 'Disease', 'MESH:D000236', (227, 235)) ('PRKACA', 'Gene', '5566', (153, 159)) 107922 30456751 Further sequencing of an additional 129 adenomas revealed a Leu206Arg variant in 14 of these 129 ACAs, with all 14 patients having overt CS. ('patients', 'Species', '9606', (115, 123)) ('Leu206Arg', 'Var', (60, 69)) ('Leu206Arg', 'SUBSTITUTION', 'None', (60, 69)) ('adenomas', 'Disease', 'MESH:D000236', (40, 48)) ('CS', 'Phenotype', 'HP:0003118', (137, 139)) ('adenomas', 'Disease', (40, 48)) 107923 30456751 PRKACA mutations were found only in patients with overt CS and were associated with a more severe phenotype. ('associated with', 'Reg', (68, 83)) ('patients', 'Species', '9606', (36, 44)) ('PRKACA', 'Gene', (0, 6)) ('PRKACA', 'Gene', '5566', (0, 6)) ('CS', 'Phenotype', 'HP:0003118', (56, 58)) ('mutations', 'Var', (7, 16)) 107924 30456751 Following the publication of these data in 2013, another three studies from China, Japan, and the USA demonstrated similar findings, with PRKACA mutations identified in 86 of 206 (42%) reported cases of ACAs with overt CS. ('mutations', 'Var', (145, 154)) ('identified', 'Reg', (155, 165)) ('CS', 'Phenotype', 'HP:0003118', (219, 221)) ('PRKACA', 'Gene', (138, 144)) ('PRKACA', 'Gene', '5566', (138, 144)) 107925 30456751 Furthermore, comparative genomic hybridization of samples from 35 patients with cortisol-secreting BAH and overt CS demonstrated germline copy-number gains (both inherited and de novo) in a region on chromosome 19p that includes the PRKACA gene in 5 patients. ('CS', 'Phenotype', 'HP:0003118', (113, 115)) ('PRKACA', 'Gene', (233, 239)) ('PRKACA', 'Gene', '5566', (233, 239)) ('patients', 'Species', '9606', (250, 258)) ('cortisol', 'Chemical', 'MESH:D006854', (80, 88)) ('copy-number gains', 'Var', (138, 155)) ('BAH', 'Chemical', '-', (99, 102)) ('patients', 'Species', '9606', (66, 74)) 107928 30456751 These were the only genetic defects linked to AIMAH until inactivating mutations of the ARMC5 gene, which encodes Armadillo repeat containing protein 5, were found in 18 of 33 patients (55%) with AIMAH, with ARMC5 likely acting as a tumor suppressor gene (see below). ('tumor', 'Phenotype', 'HP:0002664', (233, 238)) ('patients', 'Species', '9606', (176, 184)) ('inactivating mutations', 'Var', (58, 80)) ('ARMC5', 'Gene', (208, 213)) ('tumor', 'Disease', (233, 238)) ('Armadillo repeat containing protein 5', 'Gene', (114, 151)) ('ARMC5', 'Gene', (88, 93)) ('ARMC5', 'Gene', '79798', (88, 93)) ('ARMC5', 'Gene', '79798', (208, 213)) ('Armadillo repeat containing protein 5', 'Gene', '79798', (114, 151)) ('genetic defects', 'Disease', 'MESH:D030342', (20, 35)) ('genetic defects', 'Disease', (20, 35)) ('tumor', 'Disease', 'MESH:D009369', (233, 238)) 107929 30456751 AIMAH has also been linked to ectopic or abnormal expression of hormone receptors linked to steroidogenesis in adrenocortical cells, primarily members of the GPCR family, including those for gastric inhibitory polypeptide (GIP), vasopressin (V1-vasopressin), beta-adrenergic agonists, LH/hCG, or serotonin. ('serotonin', 'Chemical', 'MESH:D012701', (296, 305)) ('abnormal', 'Var', (41, 49)) ('LH', 'Chemical', 'MESH:D007986', (285, 287)) ('gastric inhibitory polypeptide', 'Gene', '2695', (191, 221)) ('ectopic', 'Var', (30, 37)) ('vasopressin', 'Gene', '551', (245, 256)) ('vasopressin', 'Gene', (245, 256)) ('adrenocortical', 'Disease', (111, 125)) ('vasopressin', 'Gene', (229, 240)) ('vasopressin', 'Gene', '551', (229, 240)) ('GIP', 'Gene', (223, 226)) ('adrenocortical', 'Disease', 'MESH:D018268', (111, 125)) ('gastric inhibitory polypeptide', 'Gene', (191, 221)) ('GIP', 'Gene', '2695', (223, 226)) ('expression', 'MPA', (50, 60)) 107932 30456751 This abnormal receptor expression may lead to potential therapeutic targets, as described in a 63-year-old woman that had AIMAH with abnormal LH/hCG and serotonin receptor expression, who responded to treatment with leuprolide. ('serotonin', 'Chemical', 'MESH:D012701', (153, 162)) ('LH/hCG', 'Gene', (142, 148)) ('serotonin', 'MPA', (153, 162)) ('woman', 'Species', '9606', (107, 112)) ('abnormal', 'Var', (133, 141)) ('LH', 'Chemical', 'MESH:D007986', (142, 144)) 107937 30456751 Molecular analysis of peripheral and/or tumor DNA in this cohort revealed germline mutations in the APC gene, MEN1 gene, and FH gene in three of the patients with AIMAH, who did not have a family history of CS. ('mutations', 'Var', (83, 92)) ('MEN1', 'Gene', (110, 114)) ('FH gene', 'Gene', (125, 132)) ('patients', 'Species', '9606', (149, 157)) ('MEN1', 'Gene', '4221', (110, 114)) ('CS', 'Phenotype', 'HP:0003118', (207, 209)) ('tumor', 'Disease', 'MESH:D009369', (40, 45)) ('APC', 'Disease', 'MESH:D011125', (100, 103)) ('APC', 'Disease', (100, 103)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('tumor', 'Disease', (40, 45)) 107943 30456751 Most patients with AIMAH had histology consistent with type II AIMAH, whereas the three familial cases, the patients with germline MEN1 and APC mutations, and the one patient with the somatic GNAS mutation demonstrated histology consistent with type I AIMAH. ('patient', 'Species', '9606', (5, 12)) ('patients', 'Species', '9606', (5, 13)) ('GNAS', 'Gene', (192, 196)) ('patient', 'Species', '9606', (167, 174)) ('APC', 'Disease', 'MESH:D011125', (140, 143)) ('APC', 'Disease', (140, 143)) ('MEN1', 'Gene', '4221', (131, 135)) ('AIMAH', 'Disease', (19, 24)) ('type II AIMAH', 'Disease', (55, 68)) ('MEN1', 'Gene', (131, 135)) ('patient', 'Species', '9606', (108, 115)) ('GNAS', 'Gene', '2778', (192, 196)) ('patients', 'Species', '9606', (108, 116)) ('mutations', 'Var', (144, 153)) 107944 30456751 Another study of 14 patients with AIMAH revealed a link to aberrant cAMP-PKA pathway signaling through the demonstration of somatic losses of the 17q22-24 region in 73% of samples as well as PKA subunit and enzymatic activity changes. ('cAMP', 'Gene', (68, 72)) ('17q22-24 region', 'Gene', (146, 161)) ('losses', 'NegReg', (132, 138)) ('cAMP', 'Gene', '820', (68, 72)) ('aberrant', 'Var', (59, 67)) ('changes', 'Reg', (226, 233)) ('patients', 'Species', '9606', (20, 28)) 107949 30456751 Investigation into the genetic origin of AIMAH led to the genotyping (both blood and tumor) of 33 patients with AIMAH, with detection of inactivating ARMC5 gene mutations in 55% (18/33) of tumors, as noted above. ('tumor', 'Disease', (85, 90)) ('tumor', 'Disease', (189, 194)) ('ARMC5', 'Gene', (150, 155)) ('tumors', 'Disease', (189, 195)) ('tumors', 'Disease', 'MESH:D009369', (189, 195)) ('ARMC5', 'Gene', '79798', (150, 155)) ('patients', 'Species', '9606', (98, 106)) ('tumors', 'Phenotype', 'HP:0002664', (189, 195)) ('tumor', 'Disease', 'MESH:D009369', (85, 90)) ('mutations', 'Var', (161, 170)) ('tumor', 'Disease', 'MESH:D009369', (189, 194)) ('inactivating', 'Var', (137, 149)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) 107950 30456751 In all 18 cases of ARMC5 mutations, both ARMC5 alleles were mutated, one germline and one somatic, with four cases with germline mutations harboring nodule-specific secondary ARMC5 mutations. ('mutations', 'Var', (25, 34)) ('ARMC5', 'Gene', (19, 24)) ('ARMC5', 'Gene', '79798', (19, 24)) ('ARMC5', 'Gene', '79798', (175, 180)) ('ARMC5', 'Gene', (175, 180)) ('ARMC5', 'Gene', '79798', (41, 46)) ('ARMC5', 'Gene', (41, 46)) 107952 30456751 The function of ARMC5 is unknown, though the protein it encodes contains an armadillo repeat domain, which is similar to the gene for beta-catenin that also contains armadillo repeats and is often mutated in various cancers, including adrenocortical tumors. ('beta-catenin', 'Gene', '1499', (134, 146)) ('ARMC5', 'Gene', '79798', (16, 21)) ('cancer', 'Phenotype', 'HP:0002664', (216, 222)) ('ARMC5', 'Gene', (16, 21)) ('adrenocortical tumors', 'Disease', (235, 256)) ('mutated', 'Var', (197, 204)) ('cancers', 'Phenotype', 'HP:0002664', (216, 223)) ('tumor', 'Phenotype', 'HP:0002664', (250, 255)) ('cancers', 'Disease', (216, 223)) ('adrenocortical tumors', 'Disease', 'MESH:D018268', (235, 256)) ('tumors', 'Phenotype', 'HP:0002664', (250, 256)) ('cancers', 'Disease', 'MESH:D009369', (216, 223)) ('beta-catenin', 'Gene', (134, 146)) 107953 30456751 In this study of 33 patients with AIMAH, inactivation of ARMC5 was associated with reduced expression of steroidogenic enzymes and MC2R with abnormal cortisol production. ('expression', 'MPA', (91, 101)) ('steroidogenic enzymes', 'MPA', (105, 126)) ('reduced', 'NegReg', (83, 90)) ('ARMC5', 'Gene', (57, 62)) ('MC2R', 'Gene', (131, 135)) ('inactivation', 'Var', (41, 53)) ('cortisol', 'Chemical', 'MESH:D006854', (150, 158)) ('ARMC5', 'Gene', '79798', (57, 62)) ('MC2R', 'Gene', '4158', (131, 135)) ('cortisol production', 'MPA', (150, 169)) ('patients', 'Species', '9606', (20, 28)) ('abnormal cortisol', 'Phenotype', 'HP:0011731', (141, 158)) 107956 30456751 The large size of the adrenal glands may be related to loss of the ability to induce apoptosis in adrenocortical cells with ARMC5 mutations, as demonstrated experimentally in human adrenocortical cell lines compared to wild-type cell lines. ('human', 'Species', '9606', (175, 180)) ('ARMC5', 'Gene', '79798', (124, 129)) ('ARMC5', 'Gene', (124, 129)) ('adrenocortical', 'Disease', 'MESH:D018268', (181, 195)) ('apoptosis', 'CPA', (85, 94)) ('mutations', 'Var', (130, 139)) ('adrenocortical', 'Disease', (98, 112)) ('adrenocortical', 'Disease', 'MESH:D018268', (98, 112)) ('large size of the adrenal glands', 'Phenotype', 'HP:0008221', (4, 36)) ('adrenocortical', 'Disease', (181, 195)) 107957 30456751 In addition, an association between primary hyperaldosteronism and ARMC5 mutations was first described in 2015. ('hyperaldosteronism', 'Disease', (44, 62)) ('ARMC5', 'Gene', '79798', (67, 72)) ('ARMC5', 'Gene', (67, 72)) ('primary hyperaldosteronism', 'Phenotype', 'HP:0011736', (36, 62)) ('hyperaldosteronism', 'Disease', 'MESH:D003480', (44, 62)) ('hyperaldosteronism', 'Phenotype', 'HP:0000859', (44, 62)) ('mutations', 'Var', (73, 82)) 107980 30456751 FH IV is attributed to germline mutations in CACNA1H (calcium channel, voltage-dependent, T-type, alpha-1H subunit), which encodes a T-type calcium channel. ('germline mutations', 'Var', (23, 41)) ('CACNA1H', 'Gene', (45, 52)) ('calcium', 'Chemical', 'MESH:D002118', (54, 61)) ('CACNA1H', 'Gene', '8912', (45, 52)) ('calcium', 'Chemical', 'MESH:D002118', (140, 147)) 107981 30456751 Germline mutations in KCNJ5 (potassium inwardly rectifying channel, subfamily J, member 5) lead to FH III, while somatic mutations are associated with 40% of APAs. ('Germline mutations', 'Var', (0, 18)) ('lead to', 'Reg', (91, 98)) ('potassium inwardly rectifying channel, subfamily J, member 5', 'Gene', '3762', (29, 89)) ('PA', 'Phenotype', 'HP:0011736', (159, 161)) ('FH II', 'Gene', '79179', (99, 104)) ('APAs', 'Disease', (158, 162)) ('FH II', 'Gene', (99, 104)) ('associated', 'Reg', (135, 145)) ('KCNJ5', 'Gene', (22, 27)) ('KCNJ5', 'Gene', '3762', (22, 27)) 107982 30456751 In a study of 22 patients with APAs, two recurrent somatic mutations (G151R and L168R), in and near the selectivity filter of the potassium channel KCNJ5, were present in eight of 22 APA samples. ('L168R', 'Var', (80, 85)) ('PA', 'Phenotype', 'HP:0011736', (184, 186)) ('KCNJ5', 'Gene', (148, 153)) ('potassium', 'Chemical', 'MESH:D011188', (130, 139)) ('PA', 'Phenotype', 'HP:0011736', (32, 34)) ('G151R', 'Var', (70, 75)) ('KCNJ5', 'Gene', '3762', (148, 153)) ('patients', 'Species', '9606', (17, 25)) ('L168R', 'Mutation', 'rs386352318', (80, 85)) ('G151R', 'Mutation', 'rs386352319', (70, 75)) 107983 30456751 KCNJ5 encodes an inwardly rectifying potassium channel, with the described mutations causing altered K+ channel selectivity. ('potassium', 'Chemical', 'MESH:D011188', (37, 46)) ('KCNJ5', 'Gene', '3762', (0, 5)) ('mutations', 'Var', (75, 84)) ('K+ channel selectivity', 'MPA', (101, 123)) ('KCNJ5', 'Gene', (0, 5)) ('causing altered', 'Reg', (85, 100)) 107986 30456751 These data from APAs were suggestive that inherited mutations in KCNJ5 could lead to PA with BAH through a similar pathogenetic mechanism that affects all adrenocortical cells. ('mutations', 'Var', (52, 61)) ('lead to', 'Reg', (77, 84)) ('KCNJ5', 'Gene', (65, 70)) ('KCNJ5', 'Gene', '3762', (65, 70)) ('affects', 'Reg', (143, 150)) ('BAH', 'Chemical', '-', (93, 96)) ('adrenocortical', 'Disease', (155, 169)) ('adrenocortical', 'Disease', 'MESH:D018268', (155, 169)) ('PA', 'Phenotype', 'HP:0011736', (85, 87)) ('PA', 'Phenotype', 'HP:0011736', (17, 19)) 107987 30456751 This was seen in a family with PA and massive adrenal hyperplasia, who were heterozygous for the T158A mutation in the KCNJ5 gene. ('T158A', 'Mutation', 'rs387906778', (97, 102)) ('T158A', 'Var', (97, 102)) ('KCNJ5', 'Gene', '3762', (119, 124)) ('adrenal hyperplasia', 'Disease', (46, 65)) ('adrenal hyperplasia', 'Disease', 'MESH:D000312', (46, 65)) ('adrenal hyperplasia', 'Phenotype', 'HP:0008221', (46, 65)) ('KCNJ5', 'Gene', (119, 124)) ('PA', 'Phenotype', 'HP:0011736', (31, 33)) 107988 30456751 These implicate Germline heterozygous KCNJ5 mutations have also been linked to the pathogenesis of hypertension associated with increased aldosterone response to ACTH stimulation. ('ACTH', 'Gene', '5443', (162, 166)) ('hypertension', 'Disease', 'MESH:D006973', (99, 111)) ('linked', 'Reg', (69, 75)) ('KCNJ5', 'Gene', '3762', (38, 43)) ('hypertension', 'Disease', (99, 111)) ('increased', 'PosReg', (128, 137)) ('implicate', 'Reg', (6, 15)) ('hypertension', 'Phenotype', 'HP:0000822', (99, 111)) ('mutations', 'Var', (44, 53)) ('increased aldosterone', 'Phenotype', 'HP:0000859', (128, 149)) ('aldosterone', 'Chemical', 'MESH:D000450', (138, 149)) ('ACTH', 'Gene', (162, 166)) ('KCNJ5', 'Gene', (38, 43)) 107990 30456751 In addition to the previously described KCNJ5 and CACNA1H mutations, further molecular analysis has resulted in the elucidation of several other somatic and, less frequently, germline mutations associated with FH and/or sporadic APAs. ('CACNA1H', 'Gene', '8912', (50, 57)) ('KCNJ5', 'Gene', '3762', (40, 45)) ('mutations', 'Var', (184, 193)) ('CACNA1H', 'Gene', (50, 57)) ('associated', 'Reg', (194, 204)) ('APAs', 'Disease', (229, 233)) ('KCNJ5', 'Gene', (40, 45)) ('PA', 'Phenotype', 'HP:0011736', (230, 232)) 107991 30456751 These mutations include those in ATPase, Na+/K+ transporting, alpha1-polypeptide (ATP1A1), ATPase, Ca2+-transporting, plasma membrane, 3 (ATP2B3), and calcium channel, voltage-dependent, L-type, alpha-1D subunit (CACNA1D). ('ATP1A1', 'Gene', '476', (82, 88)) ('ATP1A1', 'Gene', (82, 88)) ('Ca2+-transporting', 'MPA', (99, 116)) ('ATP2B3', 'Gene', '492', (138, 144)) ('ATP2B3', 'Gene', (138, 144)) ('Ca2+', 'Chemical', 'MESH:D000069285', (99, 103)) ('CACNA1D', 'Gene', '776', (213, 220)) ('CACNA1D', 'Gene', (213, 220)) ('ATPase', 'Gene', (33, 39)) ('calcium', 'Chemical', 'MESH:D002118', (151, 158)) ('mutations', 'Var', (6, 15)) ('Na+/K+ transporting', 'MPA', (41, 60)) 107995 30456751 Three of these six tumors had aldosterone-regulating mutations in KCNJ5, ATP1A1, or CACNA1D only in CYP11B2-positive regions, while one had two different mutations in KCNJ5 and ATP2B3 in two histologically different CYP11B2-positive regions. ('tumors', 'Disease', (19, 25)) ('CYP11B2', 'Gene', (216, 223)) ('KCNJ5', 'Gene', '3762', (66, 71)) ('CYP11B2', 'Gene', '1585', (100, 107)) ('KCNJ5', 'Gene', '3762', (167, 172)) ('tumors', 'Disease', 'MESH:D009369', (19, 25)) ('aldosterone', 'Chemical', 'MESH:D000450', (30, 41)) ('ATP1A1', 'Gene', (73, 79)) ('CACNA1D', 'Gene', '776', (84, 91)) ('CYP11B2', 'Gene', (100, 107)) ('mutations', 'Var', (53, 62)) ('CACNA1D', 'Gene', (84, 91)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('CYP11B2', 'Gene', '1585', (216, 223)) ('aldosterone-regulating', 'MPA', (30, 52)) ('ATP1A1', 'Gene', '476', (73, 79)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('KCNJ5', 'Gene', (66, 71)) ('ATP2B3', 'Gene', '492', (177, 183)) ('ATP2B3', 'Gene', (177, 183)) ('KCNJ5', 'Gene', (167, 172)) 107996 30456751 The seventh patient had a multinodular hyperplasic adrenal that showed CYP11B2-positive and CYP11B2-negative nodules, and different mutations in each CYP11B2-positive nodule (ATP1A1, CACNA1D), with no mutations in CYP11B2-negative nodules or the adjacent normal adrenal. ('CYP11B2', 'Gene', '1585', (71, 78)) ('CYP11B2', 'Gene', (214, 221)) ('CYP11B2', 'Gene', (92, 99)) ('CYP11B2', 'Gene', (150, 157)) ('ATP1A1', 'Gene', '476', (175, 181)) ('multinodular hyperplasic adrenal', 'Disease', (26, 58)) ('CACNA1D', 'Gene', '776', (183, 190)) ('ATP1A1', 'Gene', (175, 181)) ('CACNA1D', 'Gene', (183, 190)) ('CYP11B2', 'Gene', '1585', (214, 221)) ('CYP11B2', 'Gene', '1585', (92, 99)) ('mutations', 'Var', (132, 141)) ('CYP11B2', 'Gene', '1585', (150, 157)) ('hyperplasic adrenal', 'Phenotype', 'HP:0008221', (39, 58)) ('multinodular hyperplasic adrenal', 'Disease', 'MESH:C564546', (26, 58)) ('patient', 'Species', '9606', (12, 19)) ('CYP11B2', 'Gene', (71, 78)) 108002 30456751 A study published in 2014 based on the molecular analysis of 45 ACCs further elucidated the molecular pathogenesis of ACC with reidentification of genetic alterations in known driver genes CTNNB1, TP53, CDKN2A, and RB1, as well as identification of driver genes not previously reported including, ZNRF3, DAXX, TERT, and MED12. ('TERT', 'Gene', '7015', (310, 314)) ('MED12', 'Gene', '9968', (320, 325)) ('alterations', 'Var', (155, 166)) ('CTNNB1', 'Gene', (189, 195)) ('CDKN2A', 'Gene', '1029', (203, 209)) ('RB1', 'Gene', '5925', (215, 218)) ('TP53', 'Gene', (197, 201)) ('ACC', 'Phenotype', 'HP:0006744', (64, 67)) ('MED12', 'Gene', (320, 325)) ('DAXX', 'Gene', (304, 308)) ('ACC', 'Phenotype', 'HP:0006744', (118, 121)) ('ACC', 'Disease', (118, 121)) ('DAXX', 'Gene', '1616', (304, 308)) ('TP53', 'Gene', '7157', (197, 201)) ('ZNRF3', 'Gene', '84133', (297, 302)) ('CTNNB1', 'Gene', '1499', (189, 195)) ('ZNRF3', 'Gene', (297, 302)) ('RB1', 'Gene', (215, 218)) ('CDKN2A', 'Gene', (203, 209)) ('TERT', 'Gene', (310, 314)) 108007 30456751 Furthermore, genome-wide DNA copy number analysis demonstrated increased frequency of DNA loss, followed by whole genome doubling, which was associated with more aggressive tumors. ('DNA', 'Var', (86, 89)) ('loss', 'NegReg', (90, 94)) ('aggressive tumors', 'Disease', (162, 179)) ('tumor', 'Phenotype', 'HP:0002664', (173, 178)) ('tumors', 'Phenotype', 'HP:0002664', (173, 179)) ('aggressive tumors', 'Disease', 'MESH:D001523', (162, 179)) 108014 30456751 Patients receiving first-line therapy with EDP-mitotane had a significantly higher response rate and longer median progression-free survival compared to the streptozocin-mitotane group (5 months vs 2.1 months, respectively). ('streptozocin-mitotane', 'Chemical', '-', (157, 178)) ('EDP-mitotane', 'Var', (43, 55)) ('Patients', 'Species', '9606', (0, 8)) ('progression-free survival', 'CPA', (115, 140)) ('EDP-mitotane', 'Chemical', '-', (43, 55)) ('response', 'MPA', (83, 91)) ('higher', 'PosReg', (76, 82)) 108023 30456751 Six autosomal dominant pheochromocytoma/paraganglioma syndromes have distinct clinical features and include neurofibromatosis type 1 (NF1), multiple endocrine neoplasia type 2 (MEN2), von Hippel-Lindau syndrome (VHL), renal cell carcinoma with SDHB mutation, Carney triad, and Carney-Stratakis syndrome (CSS). ('pheochromocytoma', 'Phenotype', 'HP:0002666', (23, 39)) ('neurofibromatosis type 1', 'Gene', (108, 132)) ('VHL', 'Gene', (212, 215)) ('multiple endocrine neoplasia type 2', 'Disease', (140, 175)) ('NF1', 'Gene', '4763', (134, 137)) ('SDHB', 'Gene', '6390', (244, 248)) ('paraganglioma', 'Phenotype', 'HP:0002668', (40, 53)) ('mutation', 'Var', (249, 257)) ('CSS', 'Disease', (304, 307)) ('pheochromocytoma/paraganglioma syndromes', 'Disease', (23, 63)) ('carcinoma', 'Phenotype', 'HP:0030731', (229, 238)) ('renal cell carcinoma', 'Disease', (218, 238)) ('NF1', 'Gene', (134, 137)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (218, 238)) ('Carney-Stratakis syndrome', 'Disease', (277, 302)) ('VHL', 'Gene', '7428', (212, 215)) ('SDHB', 'Gene', (244, 248)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (108, 125)) ('neoplasia', 'Phenotype', 'HP:0002664', (159, 168)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (140, 175)) ('neurofibromatosis type 1', 'Gene', '4763', (108, 132)) ('CS', 'Phenotype', 'HP:0003118', (304, 306)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (149, 168)) ('von Hippel-Lindau syndrome', 'Disease', (184, 210)) ('CSS', 'Disease', 'MESH:C536436', (304, 307)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (277, 302)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (184, 210)) ('pheochromocytoma/paraganglioma syndromes', 'Disease', 'MESH:D010673', (23, 63)) ('Carney triad', 'Disease', (259, 271)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (218, 238)) 108025 30456751 In a study of 173 patients with pheochromocytoma and/or paraganglioma, all patients with MEN2 and NF1 mutations had elevated plasma metanephrine, whereas patients with VHL mutations usually had elevated normetanephrine, and 70% of patients with SDHB and SDHD mutations had elevated plasma methoxytyramine. ('plasma methoxytyramine', 'MPA', (282, 304)) ('SDHB', 'Gene', '6390', (245, 249)) ('elevated', 'PosReg', (116, 124)) ('elevated', 'Reg', (273, 281)) ('plasma metanephrine', 'MPA', (125, 144)) ('SDHD', 'Gene', '6392', (254, 258)) ('normetanephrine', 'Chemical', 'MESH:D009647', (203, 218)) ('paraganglioma', 'Phenotype', 'HP:0002668', (56, 69)) ('metanephrine', 'Chemical', 'MESH:D008676', (206, 218)) ('elevated', 'PosReg', (194, 202)) ('SDHB', 'Gene', (245, 249)) ('MEN2', 'Gene', (89, 93)) ('mutations', 'Var', (102, 111)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (289, 304)) ('SDHD', 'Gene', (254, 258)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (32, 48)) ('patients', 'Species', '9606', (75, 83)) ('VHL', 'Gene', (168, 171)) ('patients', 'Species', '9606', (154, 162)) ('metanephrine', 'Chemical', 'MESH:D008676', (132, 144)) ('normetanephrine', 'MPA', (203, 218)) ('patients', 'Species', '9606', (18, 26)) ('NF1', 'Gene', '4763', (98, 101)) ('paraganglioma', 'Disease', (56, 69)) ('paraganglioma', 'Disease', 'MESH:D010235', (56, 69)) ('pheochromocytoma', 'Disease', (32, 48)) ('patients', 'Species', '9606', (231, 239)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (32, 48)) ('NF1', 'Gene', (98, 101)) ('VHL', 'Gene', '7428', (168, 171)) 108026 30456751 Measurement of normetanephrine and metanephrine allowed for the distinction of those patients with MEN2 and NF1 from those with VHL, SDHB, and SDHD mutations in 99% of cases, whereas plasma methoxytyramine measurement allowed for discrimination of VHL mutations from SDHB and SDHD mutations in 78% of patients. ('VHL', 'Gene', '7428', (128, 131)) ('MEN2', 'Gene', (99, 103)) ('metanephrine', 'Chemical', 'MESH:D008676', (18, 30)) ('SDHB', 'Gene', '6390', (133, 137)) ('patients', 'Species', '9606', (301, 309)) ('SDHD', 'Gene', '6392', (143, 147)) ('SDHD', 'Gene', '6392', (276, 280)) ('NF1', 'Gene', '4763', (108, 111)) ('SDHB', 'Gene', '6390', (267, 271)) ('SDHD', 'Gene', (143, 147)) ('patients', 'Species', '9606', (85, 93)) ('SDHB', 'Gene', (133, 137)) ('NF1', 'Gene', (108, 111)) ('mutations', 'Var', (148, 157)) ('SDHD', 'Gene', (276, 280)) ('SDHB', 'Gene', (267, 271)) ('VHL', 'Gene', (248, 251)) ('VHL', 'Gene', (128, 131)) ('metanephrine', 'Chemical', 'MESH:D008676', (35, 47)) ('normetanephrine', 'Chemical', 'MESH:D009647', (15, 30)) ('methoxytyramine', 'Chemical', 'MESH:C001746', (190, 205)) ('VHL', 'Gene', '7428', (248, 251)) 108037 30456751 SDHB mutations primarily predispose to extra-adrenal paragangliomas that secrete dopamine and norepinephrine and tend to occur at a young age, with high malignant potential and an aggressive disease course. ('aggressive disease', 'Disease', (180, 198)) ('mutations', 'Var', (5, 14)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (39, 67)) ('SDHB', 'Gene', '6390', (0, 4)) ('predispose to', 'Reg', (25, 38)) ('aggressive disease', 'Disease', 'MESH:D001523', (180, 198)) ('norepinephrine', 'Chemical', 'MESH:D009638', (94, 108)) ('paraganglioma', 'Phenotype', 'HP:0002668', (53, 66)) ('dopamine', 'Chemical', 'MESH:D004298', (81, 89)) ('SDHB', 'Gene', (0, 4)) ('extra-adrenal paragangliomas', 'Disease', (39, 67)) ('paragangliomas', 'Phenotype', 'HP:0002668', (53, 67)) 108038 30456751 These mutations less commonly lead to adrenal pheochromocytomas or head and neck paragangliomas. ('lead to', 'Reg', (30, 37)) ('paraganglioma', 'Phenotype', 'HP:0002668', (81, 94)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (46, 63)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (67, 95)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (76, 95)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (67, 94)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (46, 62)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (38, 63)) ('adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (38, 63)) ('neck paragangliomas', 'Disease', (76, 95)) ('adrenal pheochromocytomas', 'Disease', (38, 63)) ('mutations', 'Var', (6, 15)) ('paragangliomas', 'Phenotype', 'HP:0002668', (81, 95)) 108039 30456751 SDHB mutations are found in 40% of patients with metastatic pheochromocytoma/paraganglioma. ('pheochromocytoma/paraganglioma', 'Disease', (60, 90)) ('paraganglioma', 'Phenotype', 'HP:0002668', (77, 90)) ('found', 'Reg', (19, 24)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (60, 90)) ('mutations', 'Var', (5, 14)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (60, 76)) ('SDHB', 'Gene', '6390', (0, 4)) ('patients', 'Species', '9606', (35, 43)) ('SDHB', 'Gene', (0, 4)) 108040 30456751 SDHD gene mutations are associated with multifocal head and neck paragangliomas and less commonly with adrenal pheochromocytomas or paragangliomas at other sites. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (111, 128)) ('associated', 'Reg', (24, 34)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (111, 127)) ('adrenal pheochromocytomas or paragangliomas', 'Disease', (103, 146)) ('paragangliomas', 'Phenotype', 'HP:0002668', (65, 79)) ('adrenal pheochromocytomas or paragangliomas', 'Disease', 'MESH:D010673', (103, 146)) ('paraganglioma', 'Phenotype', 'HP:0002668', (65, 78)) ('multifocal head and neck paragangliomas', 'Disease', 'None', (40, 79)) ('SDHD', 'Gene', '6392', (0, 4)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (51, 79)) ('mutations', 'Var', (10, 19)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (103, 128)) ('SDHD', 'Gene', (0, 4)) ('paraganglioma', 'Phenotype', 'HP:0002668', (132, 145)) ('paragangliomas', 'Phenotype', 'HP:0002668', (132, 146)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (51, 78)) 108043 30456751 Of these 32 patients, 71.8% had primary extra-adrenal tumors with genetic analysis demonstrating germline SDHB mutations in 71.9% of patients, SDHD mutations in 9.4% of patients (found in all patients with head and neck paraganglioma), and VHL mutations in 6.3% of patients. ('VHL', 'Gene', '7428', (240, 243)) ('patients', 'Species', '9606', (133, 141)) ('SDHD', 'Gene', '6392', (143, 147)) ('extra-adrenal tumors', 'Disease', 'MESH:D010236', (40, 60)) ('tumors', 'Phenotype', 'HP:0002664', (54, 60)) ('mutations', 'Var', (111, 120)) ('patients', 'Species', '9606', (12, 20)) ('paraganglioma', 'Phenotype', 'HP:0002668', (220, 233)) ('neck paraganglioma', 'Disease', (215, 233)) ('SDHD', 'Gene', (143, 147)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) ('patients', 'Species', '9606', (265, 273)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (206, 233)) ('mutations', 'Var', (148, 157)) ('patients', 'Species', '9606', (192, 200)) ('SDHB', 'Gene', '6390', (106, 110)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (215, 233)) ('VHL', 'Gene', (240, 243)) ('patients', 'Species', '9606', (169, 177)) ('extra-adrenal tumors', 'Disease', (40, 60)) ('SDHB', 'Gene', (106, 110)) 108045 30456751 All five deceased pediatric patients harbored the SDHB mutation. ('harbored', 'Reg', (37, 45)) ('SDHB', 'Gene', (50, 54)) ('mutation', 'Var', (55, 63)) ('patients', 'Species', '9606', (28, 36)) ('SDHB', 'Gene', '6390', (50, 54)) 108046 30456751 Given these data, it was recommended that patients with metastatic pheochromocytoma/paraganglioma presenting in childhood or adolescence undergo initial genetic testing for SDHB mutations, with the exception of patients with primary tumors of the head and neck (SDHD genetic testing recommended) and patients with a family history that suggests a different mutation. ('SDHD', 'Gene', (262, 266)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (67, 97)) ('tumor', 'Phenotype', 'HP:0002664', (233, 238)) ('patients', 'Species', '9606', (211, 219)) ('tumors', 'Phenotype', 'HP:0002664', (233, 239)) ('SDHB', 'Gene', '6390', (173, 177)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (67, 83)) ('SDHB', 'Gene', (173, 177)) ('pheochromocytoma/paraganglioma', 'Disease', (67, 97)) ('primary tumors', 'Disease', (225, 239)) ('paraganglioma', 'Phenotype', 'HP:0002668', (84, 97)) ('SDHD', 'Gene', '6392', (262, 266)) ('patients', 'Species', '9606', (42, 50)) ('mutations', 'Var', (178, 187)) ('patients', 'Species', '9606', (300, 308)) ('primary tumors', 'Disease', 'MESH:D009369', (225, 239)) 108047 30456751 Screening for SDHB and SDHD mutations may be also be prudent in patients with paragangliomas in certain uncommon locations such as the mediastinum or the organ of Zuckerkandl. ('paragangliomas', 'Disease', (78, 92)) ('paragangliomas', 'Phenotype', 'HP:0002668', (78, 92)) ('patients', 'Species', '9606', (64, 72)) ('SDHD', 'Gene', '6392', (23, 27)) ('SDHD', 'Gene', (23, 27)) ('paragangliomas', 'Disease', 'MESH:D010235', (78, 92)) ('SDHB', 'Gene', '6390', (14, 18)) ('mutations', 'Var', (28, 37)) ('SDHB', 'Gene', (14, 18)) ('paraganglioma', 'Phenotype', 'HP:0002668', (78, 91)) 108048 30456751 Mutations in SDHB or SDHD were identified in 10 out of 10 patients with mediastinal paragangliomas, a rare location for paraganglioma development (2%). ('paraganglioma', 'Disease', (84, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (84, 97)) ('mediastinal paragangliomas', 'Disease', 'MESH:D008480', (72, 98)) ('paraganglioma', 'Phenotype', 'HP:0002668', (120, 133)) ('identified', 'Reg', (31, 41)) ('SDHB', 'Gene', '6390', (13, 17)) ('paraganglioma', 'Disease', 'MESH:D010235', (84, 97)) ('paraganglioma', 'Disease', (120, 133)) ('SDHD', 'Gene', '6392', (21, 25)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (13, 17)) ('mediastinal paragangliomas', 'Disease', (72, 98)) ('SDHD', 'Gene', (21, 25)) ('patients', 'Species', '9606', (58, 66)) ('paragangliomas', 'Phenotype', 'HP:0002668', (84, 98)) ('paraganglioma', 'Disease', 'MESH:D010235', (120, 133)) 108049 30456751 Furthermore, SDHB or SDHD mutations were detected in the majority of patients with organ of Zuckerkandl paragangliomas, another rare site of paraganglioma occurrence located around the origin of the inferior mesenteric artery and extending to the level of the aortic bifurcation. ('detected', 'Reg', (41, 49)) ('paraganglioma', 'Disease', 'MESH:D010235', (104, 117)) ('paraganglioma', 'Disease', 'MESH:D010235', (141, 154)) ('SDHB', 'Gene', '6390', (13, 17)) ('paragangliomas', 'Disease', (104, 118)) ('paragangliomas', 'Disease', 'MESH:D010235', (104, 118)) ('SDHD', 'Gene', '6392', (21, 25)) ('mutations', 'Var', (26, 35)) ('paraganglioma', 'Phenotype', 'HP:0002668', (104, 117)) ('SDHB', 'Gene', (13, 17)) ('paragangliomas', 'Phenotype', 'HP:0002668', (104, 118)) ('SDHD', 'Gene', (21, 25)) ('paraganglioma', 'Phenotype', 'HP:0002668', (141, 154)) ('patients', 'Species', '9606', (69, 77)) ('paraganglioma', 'Disease', (104, 117)) ('paraganglioma', 'Disease', (141, 154)) 108050 30456751 In addition, per the most recent Endocrine Society Clinical Practice Guideline published in 2014, patients with paragangliomas should undergo genetic testing for SDH mutations, and those with metastatic disease should undergo evaluation for SDHB mutations. ('SDHB', 'Gene', (241, 245)) ('SDH', 'Gene', (162, 165)) ('mutations', 'Var', (166, 175)) ('paragangliomas', 'Disease', 'MESH:D010235', (112, 126)) ('SDH', 'Gene', '6390', (162, 165)) ('SDH', 'Gene', (241, 244)) ('patients', 'Species', '9606', (98, 106)) ('mutations', 'Var', (246, 255)) ('paragangliomas', 'Disease', (112, 126)) ('paragangliomas', 'Phenotype', 'HP:0002668', (112, 126)) ('SDH', 'Gene', '6390', (241, 244)) ('SDHB', 'Gene', '6390', (241, 245)) ('paraganglioma', 'Phenotype', 'HP:0002668', (112, 125)) 108052 30456751 A study comparing the sensitivity of functional imaging techniques in the localization of head and neck paragangliomas (harboring SDHD or SDHB mutations) demonstrated that 18F-fluorodihydroxyphenylalanine (18F-FDOPA) positron emission tomography (PET) was the most sensitive study, localizing all tumors, followed by 18F-fluoro-2-deoxy-D-glucose (18F-FDG) PET/CT, which localized 77% of tumors75. ('neck paragangliomas', 'Disease', (99, 118)) ('SDHD', 'Gene', (130, 134)) ('paraganglioma', 'Phenotype', 'HP:0002668', (104, 117)) ('paragangliomas', 'Phenotype', 'HP:0002668', (104, 118)) ('tumor', 'Phenotype', 'HP:0002664', (387, 392)) ('18F-fluorodihydroxyphenylalanine', 'Chemical', 'MESH:C043437', (172, 204)) ('tumors', 'Phenotype', 'HP:0002664', (387, 393)) ('18F-FDOPA', 'Chemical', 'MESH:C043437', (206, 215)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (90, 118)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (99, 118)) ('tumors', 'Phenotype', 'HP:0002664', (297, 303)) ('PA', 'Phenotype', 'HP:0011736', (213, 215)) ('SDHB', 'Gene', '6390', (138, 142)) ('mutations', 'Var', (143, 152)) ('tumors', 'Disease', (387, 393)) ('tumor', 'Phenotype', 'HP:0002664', (297, 302)) ('tumors', 'Disease', (297, 303)) ('SDHB', 'Gene', (138, 142)) ('tumors', 'Disease', 'MESH:D009369', (387, 393)) ('SDHD', 'Gene', '6392', (130, 134)) ('18F-fluoro-2-deoxy-D-glucose', 'Chemical', '-', (317, 345)) ('tumors', 'Disease', 'MESH:D009369', (297, 303)) ('18F-FDG', 'Chemical', '-', (347, 354)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (90, 117)) 108058 30456751 Furthermore, false-negative 123I-MIBG scintigraphy in patients with pheochromocytoma or paraganglioma has been associated with a more aggressive disease course and the presence of SDHB mutation. ('paraganglioma', 'Disease', (88, 101)) ('SDHB', 'Gene', (180, 184)) ('patients', 'Species', '9606', (54, 62)) ('aggressive disease', 'Disease', 'MESH:D001523', (134, 152)) ('pheochromocytoma', 'Disease', (68, 84)) ('associated', 'Reg', (111, 121)) ('mutation', 'Var', (185, 193)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (28, 37)) ('paraganglioma', 'Disease', 'MESH:D010235', (88, 101)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (68, 84)) ('aggressive disease', 'Disease', (134, 152)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (68, 84)) ('paraganglioma', 'Phenotype', 'HP:0002668', (88, 101)) ('SDHB', 'Gene', '6390', (180, 184)) ('presence', 'Var', (168, 176)) 108063 30456751 In 2007, evaluation for a genetic cause of Carney triad through comparative genomic hybridization of DNA samples from 41 patients, with the aim of detecting common gene abnormalities associated with paragangliomas (inactivating mutations in SDHA, SDHB, SDHC, and SDHD, or collectively SDHx) and GISTs (activating mutations in KIT and PDGFRA), did not identify abnormalities in these genes. ('paraganglioma', 'Phenotype', 'HP:0002668', (199, 212)) ('SDHD', 'Gene', '6392', (263, 267)) ('paragangliomas', 'Phenotype', 'HP:0002668', (199, 213)) ('SDHA', 'Gene', (241, 245)) ('SDHA', 'Gene', '6389', (241, 245)) ('SDHD', 'Gene', (263, 267)) ('paragangliomas', 'Disease', (199, 213)) ('SDHC', 'Gene', '6391', (253, 257)) ('SDHB', 'Gene', '6390', (247, 251)) ('KIT', 'Gene', (326, 329)) ('inactivating mutations', 'Var', (215, 237)) ('patients', 'Species', '9606', (121, 129)) ('GIST', 'Phenotype', 'HP:0100723', (295, 299)) ('PDGFRA', 'Gene', '5156', (334, 340)) ('PDGFRA', 'Gene', (334, 340)) ('SDHx', 'Chemical', '-', (285, 289)) ('SDHB', 'Gene', (247, 251)) ('SDHC', 'Gene', (253, 257)) ('paragangliomas', 'Disease', 'MESH:D010235', (199, 213)) 108064 30456751 However, this evaluation did identify abnormalities in chromosome 1, most frequently deletion of the 1q12-q23.3 chromosomal region harboring the SDHC gene, as well as loss of the 1p region. ('deletion', 'Var', (85, 93)) ('SDHC', 'Gene', '6391', (145, 149)) ('SDHC', 'Gene', (145, 149)) 108068 30456751 This was demonstrated in a study involving the largest cohort of Carney triad patients available internationally that demonstrated germline variants of SDHA, SDHB, or SHDC in six out of 63 patients (9.5%). ('variants', 'Var', (140, 148)) ('SDHA', 'Gene', '6389', (152, 156)) ('patients', 'Species', '9606', (78, 86)) ('SHDC', 'Gene', (167, 171)) ('SDHA', 'Gene', (152, 156)) ('SDHB', 'Gene', '6390', (158, 162)) ('patients', 'Species', '9606', (189, 197)) ('SDHB', 'Gene', (158, 162)) 108071 30456751 Patients with CSS harbor inactivating germline mutations in the SDHx genes . ('SDHx', 'Chemical', '-', (64, 68)) ('SDHx', 'Gene', (64, 68)) ('Patients', 'Species', '9606', (0, 8)) ('CS', 'Phenotype', 'HP:0003118', (14, 16)) ('inactivating germline mutations', 'Var', (25, 56)) ('CSS', 'Disease', (14, 17)) ('CSS', 'Disease', 'MESH:C536436', (14, 17)) 108072 30456751 SDH mutations have also been associated with wild-type (WT) GISTs. ('mutations', 'Var', (4, 13)) ('SDH', 'Gene', (0, 3)) ('GIST', 'Phenotype', 'HP:0100723', (60, 64)) ('SDH', 'Gene', '6390', (0, 3)) 108075 30456751 The larger group is comprised of GISTs that harbor mutations in KIT (75-80% of tumors) and PDGFRA (5-15% of tumors). ('GIST', 'Phenotype', 'HP:0100723', (33, 37)) ('mutations', 'Var', (51, 60)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('tumors', 'Disease', (79, 85)) ('tumors', 'Disease', 'MESH:D009369', (79, 85)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('tumors', 'Disease', (108, 114)) ('KIT', 'Gene', (64, 67)) ('PDGFRA', 'Gene', (91, 97)) ('tumors', 'Disease', 'MESH:D009369', (108, 114)) ('tumors', 'Phenotype', 'HP:0002664', (108, 114)) ('PDGFRA', 'Gene', '5156', (91, 97)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) 108076 30456751 The second group is comprised of the remaining 10% of GISTs and is further divided into SDH-deficient (SDHx abnormalities) and non-SDH-deficient tumors (mutations in NF1, BRAF, KRAS, PIK3CA, and the ETV6-NTRK3 fusion gene). ('NF1', 'Gene', (166, 169)) ('GIST', 'Phenotype', 'HP:0100723', (54, 58)) ('NF1', 'Gene', '4763', (166, 169)) ('mutations', 'Var', (153, 162)) ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('ETV6-NTRK3 fusion', 'Gene', '4916;2120', (199, 216)) ('BRAF', 'Gene', '673', (171, 175)) ('SDH-deficient (SDHx abnormalities) and non-SDH-deficient tumors', 'Disease', 'MESH:D009369', (88, 151)) ('tumors', 'Phenotype', 'HP:0002664', (145, 151)) ('KRAS', 'Gene', (177, 181)) ('BRAF', 'Gene', (171, 175)) ('KRAS', 'Gene', '3845', (177, 181)) ('ETV6-NTRK3 fusion', 'Gene', (199, 216)) ('PIK3CA', 'Gene', (183, 189)) ('PIK3CA', 'Gene', '5290', (183, 189)) 108077 30456751 In a study of 34 patients with sporadic WT GISTs without a family history of paraganglioma, 12% of patients were found to have germline mutations in SDHB or SDHC, while those who did not harbor a detectable SDH mutation demonstrated significantly decreased SDHB protein expression. ('SDHC', 'Gene', (157, 161)) ('paraganglioma', 'Disease', (77, 90)) ('SDH', 'Gene', (257, 260)) ('SDH', 'Gene', '6390', (207, 210)) ('mutations', 'Var', (136, 145)) ('paraganglioma', 'Disease', 'MESH:D010235', (77, 90)) ('decreased', 'NegReg', (247, 256)) ('SDHB', 'Gene', '6390', (149, 153)) ('SDH', 'Gene', '6390', (149, 152)) ('protein', 'Protein', (262, 269)) ('SDHB', 'Gene', '6390', (257, 261)) ('SDH', 'Gene', '6390', (157, 160)) ('SDH', 'Gene', (207, 210)) ('paraganglioma', 'Phenotype', 'HP:0002668', (77, 90)) ('GIST', 'Phenotype', 'HP:0100723', (43, 47)) ('SDHB', 'Gene', (149, 153)) ('SDHC', 'Gene', '6391', (157, 161)) ('patients', 'Species', '9606', (99, 107)) ('SDH', 'Gene', (149, 152)) ('patients', 'Species', '9606', (17, 25)) ('SDHB', 'Gene', (257, 261)) ('SDH', 'Gene', '6390', (257, 260)) ('SDH', 'Gene', (157, 160)) 108079 30456751 Of these 84 tumors, 67% had SDHx mutations, with 82% of these mutations representing germline mutations. ('mutations', 'Var', (33, 42)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('SDHx', 'Gene', (28, 32)) ('tumors', 'Disease', (12, 18)) ('SDHx', 'Chemical', '-', (28, 32)) ('tumors', 'Phenotype', 'HP:0002664', (12, 18)) ('tumors', 'Disease', 'MESH:D009369', (12, 18)) 108080 30456751 Twenty-two percent of the SDH-deficient tumors had hypermethylation of the SDHC promoter. ('SDH-deficient tumors', 'Disease', (26, 46)) ('SDHC', 'Gene', (75, 79)) ('hypermethylation', 'Var', (51, 67)) ('SDHC', 'Gene', '6391', (75, 79)) ('SDH-deficient tumors', 'Disease', 'MESH:D009369', (26, 46)) ('tumor', 'Phenotype', 'HP:0002664', (40, 45)) ('tumors', 'Phenotype', 'HP:0002664', (40, 46)) 108081 30456751 Findings from these two studies highlight the possible central role of SDH dysregulation in the development of WT GISTs. ('SDH', 'Gene', (71, 74)) ('GIST', 'Phenotype', 'HP:0100723', (114, 118)) ('SDH', 'Gene', '6390', (71, 74)) ('dysregulation', 'Var', (75, 88)) 108083 30456751 MEN1 is an autosomal dominant hereditary disorder due to mutations in the MEN1 gene that lead to the development of tumors in the parathyroid glands, pancreas, and anterior pituitary. ('tumors', 'Disease', (116, 122)) ('tumors', 'Disease', 'MESH:D009369', (116, 122)) ('MEN1', 'Gene', '4221', (0, 4)) ('MEN1', 'Gene', '4221', (74, 78)) ('tumors', 'Phenotype', 'HP:0002664', (116, 122)) ('lead to', 'Reg', (89, 96)) ('pancreas', 'Disease', (150, 158)) ('mutations', 'Var', (57, 66)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('pancreas', 'Disease', 'MESH:D010190', (150, 158)) ('MEN1', 'Gene', (74, 78)) ('autosomal dominant hereditary disorder', 'Disease', (11, 49)) ('autosomal dominant hereditary disorder', 'Disease', 'MESH:D030342', (11, 49)) ('MEN1', 'Gene', (0, 4)) 108085 30456751 This patient harbored a germline SDHD mutation that was identified in the pituitary tumor tissue. ('pituitary tumor', 'Disease', (74, 89)) ('SDHD', 'Gene', '6392', (33, 37)) ('patient', 'Species', '9606', (5, 12)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('pituitary tumor', 'Disease', 'MESH:D010911', (74, 89)) ('SDHD', 'Gene', (33, 37)) ('mutation', 'Var', (38, 46)) 108088 30456751 The possible role of SDHx mutations in the development of pituitary abnormalities was also demonstrated in a mouse model, where the pituitaries of Sdhb+/- mice older than 12 months were found to have an increased number mainly of prolactin-secreting cells and several ultrastructural abnormalities, such as intranuclear inclusions, altered chromatin nuclear pattern, and abnormal mitochondria. ('intranuclear inclusions', 'Phenotype', 'HP:0100304', (307, 330)) ('mitochondria', 'CPA', (380, 392)) ('abnormal', 'Reg', (371, 379)) ('Sdhb', 'Gene', (147, 151)) ('intranuclear inclusions', 'CPA', (307, 330)) ('mouse', 'Species', '10090', (109, 114)) ('prolactin-secreting', 'MPA', (230, 249)) ('SDHx', 'Chemical', '-', (21, 25)) ('SDHx', 'Gene', (21, 25)) ('mutations', 'Var', (26, 35)) ('pituitary abnormalities', 'Disease', (58, 81)) ('mice', 'Species', '10090', (155, 159)) ('pituitary abnormalities', 'Disease', 'MESH:D010900', (58, 81)) ('Sdhb', 'Gene', '67680', (147, 151)) ('pituitary abnormalities', 'Phenotype', 'HP:0011747', (58, 81)) ('altered', 'Reg', (332, 339)) ('chromatin nuclear pattern', 'CPA', (340, 365)) ('increased', 'PosReg', (203, 212)) 108089 30456751 Mutant mice tended to have higher insulin-like growth factor-1 levels at all ages, whereas prolactin and growth hormone levels varied according to age and sex. ('insulin-like growth factor-1', 'Gene', '16000', (34, 62)) ('insulin-like growth factor-1', 'Gene', (34, 62)) ('mice', 'Species', '10090', (7, 11)) ('growth hormone', 'Chemical', 'MESH:D013006', (105, 119)) ('higher', 'PosReg', (27, 33)) ('Mutant', 'Var', (0, 6)) 108090 30456751 SDHx mutations have also been linked to other non-paraganglionic tumors, including pancreatic neuroendocrine tumors, abdominal ganglioneuromas, and renal cell carcinomas. ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (148, 168)) ('renal cell carcinomas', 'Disease', (148, 169)) ('pancreatic neuroendocrine tumors', 'Disease', (83, 115)) ('tumors', 'Disease', (65, 71)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (94, 115)) ('tumors', 'Phenotype', 'HP:0002664', (109, 115)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (148, 169)) ('abdominal ganglioneuromas', 'Disease', 'MESH:D005729', (117, 142)) ('carcinoma', 'Phenotype', 'HP:0030731', (159, 168)) ('carcinomas', 'Phenotype', 'HP:0030731', (159, 169)) ('tumors', 'Disease', 'MESH:D009369', (65, 71)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('tumors', 'Disease', (109, 115)) ('mutations', 'Var', (5, 14)) ('SDHx', 'Gene', (0, 4)) ('linked', 'Reg', (30, 36)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) ('paraganglionic tumors', 'Phenotype', 'HP:0002668', (50, 71)) ('tumors', 'Disease', 'MESH:D009369', (109, 115)) ('abdominal ganglioneuromas', 'Disease', (117, 142)) ('pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (83, 115)) ('SDHx', 'Chemical', '-', (0, 4)) ('tumors', 'Phenotype', 'HP:0002664', (65, 71)) ('renal cell carcinomas', 'Disease', 'MESH:C538614', (148, 169)) 108134 28717527 Germline mutations are known in three, all in the gene complex encoding succinate dehydrogenase (SDH): with subunits SDHD, SDHC, or SDHB mutated, any of which predisposes PGs. ('SDH', 'Gene', (123, 126)) ('SDH', 'Gene', '6390', (97, 100)) ('SDHB', 'Gene', '6390', (132, 136)) ('SDHC', 'Gene', (123, 127)) ('predisposes', 'Reg', (159, 170)) ('succinate dehydrogenase', 'Gene', (72, 95)) ('PGs', 'Phenotype', 'HP:0002668', (171, 174)) ('SDH', 'Gene', (97, 100)) ('SDHD', 'Gene', '6392', (117, 121)) ('SDH', 'Gene', '6390', (117, 120)) ('SDHB', 'Gene', (132, 136)) ('SDH', 'Gene', '6390', (132, 135)) ('mutated', 'Var', (137, 144)) ('SDH', 'Gene', '6390', (123, 126)) ('SDHD', 'Gene', (117, 121)) ('SDHC', 'Gene', '6391', (123, 127)) ('succinate dehydrogenase', 'Gene', '6390', (72, 95)) ('PGs', 'Disease', (171, 174)) ('SDH', 'Gene', (117, 120)) ('SDH', 'Gene', (132, 135)) 108136 28717527 It is thought that SDH mutations cause dysregulation of hypoxia-induced factors, thereby yielding a cellular response mimicking that of hypoxia, which is known to cause carotid paraganglial hypertrophy. ('cause', 'Reg', (33, 38)) ('cellular response', 'MPA', (100, 117)) ('SDH', 'Gene', (19, 22)) ('hypoxia', 'Disease', (136, 143)) ('hypoxia', 'Disease', 'MESH:D000860', (136, 143)) ('yielding', 'Reg', (89, 97)) ('dysregulation', 'MPA', (39, 52)) ('mutations', 'Var', (23, 32)) ('hypoxia', 'Disease', 'MESH:D000860', (56, 63)) ('carotid paraganglial hypertrophy', 'Disease', 'MESH:D006984', (169, 201)) ('carotid paraganglial hypertrophy', 'Disease', (169, 201)) ('SDH', 'Gene', '6390', (19, 22)) ('hypoxia', 'Disease', (56, 63)) ('cause', 'Reg', (163, 168)) 108146 27774468 The role of PHD2 mutations in the pathogenesis of erythrocytosis The transcription of the erythropoietin (EPO) gene is tightly regulated by the hypoxia response pathway to maintain oxygen homeostasis. ('PHD2', 'Gene', (12, 16)) ('PHD2', 'Gene', '54583', (12, 16)) ('transcription', 'MPA', (69, 82)) ('erythropoietin', 'Gene', '2056', (90, 104)) ('oxygen', 'Chemical', 'MESH:D010100', (181, 187)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (50, 64)) ('hypoxia', 'Disease', (144, 151)) ('hypoxia', 'Disease', 'MESH:D000860', (144, 151)) ('erythrocytosis', 'Disease', (50, 64)) ('EPO', 'Gene', (106, 109)) ('mutations', 'Var', (17, 26)) ('erythropoietin', 'Gene', (90, 104)) 108150 27774468 Sequence analysis of the genes encoding the PHDs in patients with erythrocytosis has revealed heterozygous germline mutations only occurring in Egl nine homolog 1 (EGLN1, also known as PHD2), the gene that encodes PHD2. ('PHDs', 'Chemical', 'MESH:D013929', (44, 48)) ('EGLN1', 'Gene', (164, 169)) ('mutations', 'Var', (116, 125)) ('Egl nine homolog 1', 'Gene', (144, 162)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (66, 80)) ('Egl nine homolog 1', 'Gene', '54583', (144, 162)) ('EGLN1', 'Gene', '54583', (164, 169)) ('patients', 'Species', '9606', (52, 60)) 108151 27774468 To date, 24 different EGLN1 mutations comprising missense, frameshift, and nonsense mutations have been described. ('EGLN1', 'Gene', (22, 27)) ('frameshift', 'Var', (59, 69)) ('missense', 'Var', (49, 57)) ('EGLN1', 'Gene', '54583', (22, 27)) ('nonsense mutations', 'Var', (75, 93)) 108152 27774468 The phenotypes associated with the patients carrying these mutations are fairly homogeneous and typically limited to erythrocytosis with normal to elevated EPO. ('erythrocytosis', 'MPA', (117, 131)) ('EPO', 'MPA', (156, 159)) ('patients', 'Species', '9606', (35, 43)) ('limited', 'Reg', (106, 113)) ('mutations', 'Var', (59, 68)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (117, 131)) 108156 27774468 A knockin mouse model expressing the first reported PHD2-P317R mutation recapitulates the phenotype observed in humans (erythrocytosis with inappropriately normal serum EPO levels) and demonstrates that haploinsufficiency and partial deregulation of PHD2 is sufficient to cause erythrocytosis. ('mouse', 'Species', '10090', (10, 15)) ('erythrocytosis', 'Disease', (278, 292)) ('cause', 'Reg', (272, 277)) ('haploinsufficiency', 'Disease', 'MESH:D058495', (203, 221)) ('humans', 'Species', '9606', (112, 118)) ('PHD2', 'Gene', (250, 254)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (120, 134)) ('P317R', 'Mutation', 'rs80358193', (57, 62)) ('partial deregulation', 'Var', (226, 246)) ('haploinsufficiency', 'Disease', (203, 221)) ('PHD2-P317R', 'Gene', (52, 62)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (278, 292)) 108161 27774468 This review focuses on secondary hereditary erythrocytosis caused by defects in the oxygen-sensing pathway that lead to EPO overexpression and, in particular, germline defects in the Egl nine homolog 1 (EGLN1) gene encoding the dioxygenase prolyl hydroxylase domain-containing protein 2 (PHD2 or EGLN1), a major player in the oxygen-sensing pathway. ('oxygen', 'Chemical', 'MESH:D010100', (326, 332)) ('caused', 'Reg', (59, 65)) ('oxygen', 'Chemical', 'MESH:D010100', (230, 236)) ('prolyl hydroxylase domain-containing protein 2', 'Gene', (240, 286)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (44, 58)) ('EGLN1', 'Gene', (296, 301)) ('oxygen', 'Chemical', 'MESH:D010100', (84, 90)) ('defects', 'Var', (168, 175)) ('overexpression', 'PosReg', (124, 138)) ('Egl nine homolog 1', 'Gene', '54583', (183, 201)) ('Egl nine homolog 1', 'Gene', (183, 201)) ('hereditary erythrocytosis', 'Disease', 'MESH:C536842', (33, 58)) ('EGLN1', 'Gene', '54583', (203, 208)) ('hereditary erythrocytosis', 'Disease', (33, 58)) ('prolyl hydroxylase domain-containing protein 2', 'Gene', '54583', (240, 286)) ('defects', 'Var', (69, 76)) ('EGLN1', 'Gene', (203, 208)) ('dioxygen', 'Chemical', 'MESH:D010100', (228, 236)) ('EGLN1', 'Gene', '54583', (296, 301)) 108171 27774468 PHDs hydroxylate prolyl residues located within the HIF-alpha ODD (P402 and P564 for HIF-1alpha and P405 and P531 for HIF-2alpha), which allows binding of HIF-alpha to the von Hippel-Lindau (VHL) protein, a recognition component of an E3 ubiquitin ligase multiprotein complex. ('P531', 'Var', (109, 113)) ('P402', 'Var', (67, 71)) ('von Hippel-Lindau', 'Gene', (172, 189)) ('binding', 'Interaction', (144, 151)) ('HIF-2alpha', 'Gene', (118, 128)) ('HIF-1alpha', 'Gene', '3091', (85, 95)) ('PHDs', 'Chemical', 'MESH:D013929', (0, 4)) ('von Hippel-Lindau', 'Gene', '7428', (172, 189)) ('HIF-1alpha', 'Gene', (85, 95)) ('P405', 'Var', (100, 104)) ('P564', 'Var', (76, 80)) ('HIF-2alpha', 'Gene', '2034', (118, 128)) ('prolyl', 'Chemical', '-', (17, 23)) 108187 27774468 In addition, genetic deletion of Vhl in renin-expressing cells converted these cells in EPO-producing cells. ('converted', 'Reg', (63, 72)) ('genetic deletion', 'Var', (13, 29)) ('Vhl', 'Gene', (33, 36)) ('renin', 'Gene', '5972', (40, 45)) ('renin', 'Gene', (40, 45)) ('Vhl', 'Gene', '7428', (33, 36)) 108196 27774468 Germline defects in some of the genes encoding proteins in red blood cells, including ones in the EPO signal transduction pathway, have been identified in hereditary erythrocytosis. ('erythrocytosis', 'Phenotype', 'HP:0001901', (166, 180)) ('defects', 'Var', (9, 16)) ('identified', 'Reg', (141, 151)) ('hereditary erythrocytosis', 'Disease', 'MESH:C536842', (155, 180)) ('hereditary erythrocytosis', 'Disease', (155, 180)) 108197 27774468 Mutations in genes encoding hemoglobin or bisphosphoglycerate mutase induce increased affinity for oxygen by hemoglobin reducing available oxygen to the tissues. ('oxygen', 'Chemical', 'MESH:D010100', (99, 105)) ('increased', 'PosReg', (76, 85)) ('reducing', 'NegReg', (120, 128)) ('hemoglobin or bisphosphoglycerate mutase', 'Gene', '669', (28, 68)) ('Mutations', 'Var', (0, 9)) ('oxygen', 'Chemical', 'MESH:D010100', (139, 145)) ('available oxygen to the tissues', 'MPA', (129, 160)) ('hemoglobin or bisphosphoglycerate mutase', 'Gene', (28, 68)) ('affinity for oxygen', 'MPA', (86, 105)) 108199 27774468 Mutations in the receptor of EPO (EPOR) (responsible for ECYT1 [erythrocytosis type1]) induce the loss of the negative feedback control by SHP and the constitutive activation of the EPO signaling pathway. ('SHP', 'Gene', (139, 142)) ('EPO signaling pathway', 'Pathway', (182, 203)) ('Mutations', 'Var', (0, 9)) ('loss', 'NegReg', (98, 102)) ('SHP', 'Gene', '8431', (139, 142)) ('EPOR', 'Gene', '2057', (34, 38)) ('EPOR', 'Gene', (34, 38)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (64, 78)) ('negative feedback control', 'MPA', (110, 135)) 108202 27774468 Subsequent analysis of the EPOR gene revealed a nonsense mutation that truncated the receptor and resulted in dysregulation of the EPO signaling pathway and hypersensitivity to EPO. ('dysregulation', 'MPA', (110, 123)) ('mutation', 'Var', (57, 65)) ('gene', 'Gene', (32, 36)) ('hypersensitivity', 'Disease', 'MESH:D004342', (157, 173)) ('resulted in', 'Reg', (98, 109)) ('EPO signaling pathway', 'Pathway', (131, 152)) ('truncated', 'NegReg', (71, 80)) ('EPOR', 'Gene', (27, 31)) ('hypersensitivity', 'Disease', (157, 173)) ('EPOR', 'Gene', '2057', (27, 31)) ('receptor', 'Protein', (85, 93)) 108203 27774468 The first EPOR mutation was detected in cases with reduced EPO levels, and subsequently, many other EPOR truncation mutations have been described in similar erythrocytosis patients. ('EPOR', 'Gene', '2057', (100, 104)) ('mutation', 'Var', (15, 23)) ('reduced', 'NegReg', (51, 58)) ('EPO levels', 'MPA', (59, 69)) ('patients', 'Species', '9606', (172, 180)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (157, 171)) ('EPOR', 'Gene', '2057', (10, 14)) ('EPOR', 'Gene', (10, 14)) ('EPOR', 'Gene', (100, 104)) 108204 27774468 However, none of the numerous erythrocytosis cases that exhibited elevated or inappropriately normal EPO levels were found to possess EPOR mutations, and their molecular basis remained uncharacterized. ('numerous erythrocytosis', 'Disease', (21, 44)) ('mutations', 'Var', (139, 148)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (30, 44)) ('EPOR', 'Gene', (134, 138)) ('EPOR', 'Gene', '2057', (134, 138)) ('EPO levels', 'MPA', (101, 111)) ('numerous erythrocytosis', 'Disease', 'MESH:D011086', (21, 44)) 108206 27774468 Defects in VHL were already known to cause a hereditary cancer syndrome, von Hippel-Lindau disease; very occasionally, erythrocytosis is concurrent with this syndrome because of EPO production by the tumor. ('tumor', 'Disease', 'MESH:D009369', (200, 205)) ('EPO', 'MPA', (178, 181)) ('hereditary cancer syndrome', 'Disease', 'MESH:D009386', (45, 71)) ('von Hippel-Lindau disease', 'Disease', (73, 98)) ('tumor', 'Phenotype', 'HP:0002664', (200, 205)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (73, 98)) ('Defects', 'Var', (0, 7)) ('cancer', 'Phenotype', 'HP:0002664', (56, 62)) ('tumor', 'Disease', (200, 205)) ('hereditary cancer syndrome', 'Disease', (45, 71)) ('VHL', 'Gene', (11, 14)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (119, 133)) ('erythrocytosis', 'Disease', (119, 133)) ('cause', 'Reg', (37, 42)) 108210 27774468 As a consequence, they envisaged that disruption of the ODD domain structure could influence the association of HIF-1alpha with VHL and, hence, reduce ubiquitination of the alpha subunit. ('HIF-1alpha', 'Gene', '3091', (112, 122)) ('ubiquitination', 'MPA', (151, 165)) ('reduce', 'NegReg', (144, 150)) ('association', 'Interaction', (97, 108)) ('disruption', 'Var', (38, 48)) ('HIF-1alpha', 'Gene', (112, 122)) ('influence', 'Reg', (83, 92)) ('ODD', 'Protein', (56, 59)) ('VHL', 'Protein', (128, 131)) 108211 27774468 Screening the ODD domain in erythrocytosis patients detected one change, the p.Pro582Ser (P582S) polymorphism, at a higher frequency than in non-erythrocytosis controls. ('erythrocytosis', 'Disease', (28, 42)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (145, 159)) ('patients', 'Species', '9606', (43, 51)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (28, 42)) ('p.Pro582Ser (P582S', 'Var', (77, 95)) ('P582S', 'Mutation', 'rs11549465', (90, 95)) ('p.Pro582Ser', 'Mutation', 'rs11549465', (77, 88)) 108215 27774468 Therefore, one may hypothesize that disruption of prolyl hydroxylation by an impaired PHD enzyme could result in erythrocytosis. ('prolyl hydroxylation', 'MPA', (50, 70)) ('disruption', 'Var', (36, 46)) ('prolyl', 'Chemical', '-', (50, 56)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (113, 127)) ('PHD enzyme', 'Gene', (86, 96)) ('result in', 'Reg', (103, 112)) ('erythrocytosis', 'MPA', (113, 127)) 108216 27774468 As a consequence, a screening program of the three PHDs (1-3) was initiated in individuals who were previously negative for VHL mutations. ('mutations', 'Var', (128, 137)) ('PHDs', 'Chemical', 'MESH:D013929', (51, 55)) ('VHL', 'Gene', (124, 127)) 108218 27774468 The first reported PHD2 mutation, p.Pro317Arg (PHD2-P317R), was present in three members of the same family from two generations (Table 2). ('p.Pro317Arg', 'Var', (34, 45)) ('PHD2', 'Gene', (19, 23)) ('P317R', 'Mutation', 'rs80358193', (52, 57)) ('p.Pro317Arg', 'Mutation', 'rs80358193', (34, 45)) 108221 27774468 In contrast to the VHL-R200W mutation, which is usually associated with substantially elevated serum EPO and raised hemoglobin, the PHD2-P317R mutation results in an EPO level in the normal range, and subtly raised hemoglobin. ('elevated', 'PosReg', (86, 94)) ('P317R', 'Mutation', 'rs80358193', (137, 142)) ('raised', 'PosReg', (208, 214)) ('results in', 'Reg', (152, 162)) ('PHD2-P317R', 'Var', (132, 142)) ('R200W', 'Mutation', 'rs28940298', (23, 28)) ('serum EPO', 'MPA', (95, 104)) ('raised hemoglobin', 'Phenotype', 'HP:0001900', (208, 225)) ('hemoglobin', 'MPA', (215, 225)) ('raised hemoglobin', 'Phenotype', 'HP:0001900', (109, 126)) ('EPO level', 'MPA', (166, 175)) ('hemoglobin', 'MPA', (116, 126)) 108222 27774468 Subsequent studies of patients with erythrocytosis have identified a range of germline mutations in the EGLN1 gene, leading to PHD2-P200Q, N203K, K204E, D254H, G285R, K291I, P304L (Percy and McMullin, unpublished data, 2004), W334R, two independent cases of R371H, H374R (associated with recurrent paraganglioma), and K423E mutations (Table 2). ('W334R', 'Var', (226, 231)) ('R371H', 'Var', (258, 263)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (36, 50)) ('K423E', 'Mutation', 'p.K423E', (318, 323)) ('K291I', 'Var', (167, 172)) ('N203K', 'Var', (139, 144)) ('K423E mutations', 'Var', (318, 333)) ('H374R', 'Var', (265, 270)) ('EGLN1', 'Gene', '54583', (104, 109)) ('W334R', 'Mutation', 'p.W334R', (226, 231)) ('patients', 'Species', '9606', (22, 30)) ('paraganglioma', 'Disease', (298, 311)) ('EGLN1', 'Gene', (104, 109)) ('K204E', 'Var', (146, 151)) ('PHD2-P200Q', 'Var', (127, 137)) ('paraganglioma', 'Disease', 'MESH:D010235', (298, 311)) ('G285R', 'SUBSTITUTION', 'None', (160, 165)) ('H374R', 'Mutation', 'rs119476045', (265, 270)) ('P200Q', 'Mutation', 'p.P200Q', (132, 137)) ('D254H', 'Var', (153, 158)) ('G285R', 'Var', (160, 165)) ('paraganglioma', 'Phenotype', 'HP:0002668', (298, 311)) ('K204E', 'Mutation', 'p.K204E', (146, 151)) ('D254H', 'SUBSTITUTION', 'None', (153, 158)) ('N203K', 'Mutation', 'rs1190391316', (139, 144)) ('P304L', 'Var', (174, 179)) ('R371H', 'Mutation', 'rs119476044', (258, 263)) ('P304L', 'Mutation', 'rs1293106237', (174, 179)) ('K291I', 'Mutation', 'p.K291I', (167, 172)) 108223 27774468 More recently, a new mutation has been identified at the Arg371 residue, but with a different amino acid change (R371C) (Percy and McMullin, unpublished data, 2013), which strengthen the proposed importance of this residue in the PHD2 function. ('R371C', 'Var', (113, 118)) ('Arg371', 'Var', (57, 63)) ('R371C', 'Mutation', 'p.R371C', (113, 118)) ('Arg371', 'Chemical', '-', (57, 63)) 108224 27774468 In addition, frame-shift (M202IfsX72, R227AfsX20 [Bento and Almeida, unpublished data, 2014], L279TfsX43, R281TfsX3, p.V338GfsX18) and nonsense mutations producing predicted C-terminally truncated proteins (Q221X [Lambert, unpublished data, 2013], Q239X [Bento and Almeida, unpublished data, 2014], Q377X, R398X) have been identified, and two polymorphisms described in the normal population have been identified in patients with erythrocytosis (PHD2-C127S and PHD2-Q157H). ('L279TfsX43', 'Var', (94, 104)) ('PHD2-C127S', 'Var', (446, 456)) ('Q239X [', 'Var', (248, 255)) ('M202IfsX72', 'Mutation', 'p.M202IfsX72', (26, 36)) ('R227AfsX20', 'Mutation', 'p.R227AfsX20', (38, 48)) ('R398X', 'Var', (306, 311)) ('Q377X', 'Var', (299, 304)) ('Q157H', 'Mutation', 'rs61750991', (466, 471)) ('R227AfsX20', 'Var', (38, 48)) ('L279TfsX43', 'Mutation', 'p.L279TfsX43', (94, 104)) ('Q221X', 'Var', (207, 212)) ('Q221X', 'Mutation', 'rs753420857', (207, 212)) ('p.V338GfsX18', 'Mutation', 'p.V338GfsX18', (117, 129)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (430, 444)) ('R281TfsX3', 'Var', (106, 115)) ('erythrocytosis', 'Disease', (430, 444)) ('R281TfsX3', 'Mutation', 'p.R281TfsX3', (106, 115)) ('p.V338GfsX18', 'Var', (117, 129)) ('M202IfsX72', 'Var', (26, 36)) ('C127S', 'Mutation', 'rs12097901', (451, 456)) ('patients', 'Species', '9606', (416, 424)) ('Q239X', 'Mutation', 'p.Q239X', (248, 253)) ('Q377X', 'Mutation', 'p.Q377X', (299, 304)) ('R398X', 'Mutation', 'rs1301849220', (306, 311)) 108225 27774468 These studies identify a total of 37 patients with erythrocytosis who carry 24 different EGLN1 mutations. ('patients', 'Species', '9606', (37, 45)) ('erythrocytosis', 'Disease', (51, 65)) ('EGLN1', 'Gene', (89, 94)) ('mutations', 'Var', (95, 104)) ('EGLN1', 'Gene', '54583', (89, 94)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (51, 65)) 108231 27774468 Several cases have been described with hypertension (in one case with an H374R mutation related to catecholamine secretion by a paraganglioma), thrombotic events or benign renal cysts, or angioma. ('thrombotic', 'Disease', 'MESH:D013927', (144, 154)) ('angioma', 'Disease', 'MESH:D006391', (188, 195)) ('H374R', 'Mutation', 'rs119476045', (73, 78)) ('angioma', 'Disease', (188, 195)) ('hypertension', 'Disease', (39, 51)) ('H374R mutation', 'Var', (73, 87)) ('thrombotic', 'Disease', (144, 154)) ('paraganglioma', 'Disease', 'MESH:D010235', (128, 141)) ('benign renal cysts', 'Disease', (165, 183)) ('hypertension', 'Phenotype', 'HP:0000822', (39, 51)) ('catecholamine', 'Chemical', 'MESH:D002395', (99, 112)) ('benign renal cysts', 'Disease', 'MESH:D007674', (165, 183)) ('renal cysts', 'Phenotype', 'HP:0000107', (172, 183)) ('paraganglioma', 'Phenotype', 'HP:0002668', (128, 141)) ('thrombotic events', 'Phenotype', 'HP:0001907', (144, 161)) ('catecholamine secretion', 'MPA', (99, 122)) ('hypertension', 'Disease', 'MESH:D006973', (39, 51)) ('paraganglioma', 'Disease', (128, 141)) 108232 27774468 Two cases of erythrocytosis have been associated with hemochromatosis as a result of mutations in the high iron Fe (HFE) gene. ('hemochromatosis', 'Disease', (54, 69)) ('HFE', 'Gene', '3077', (116, 119)) ('hemochromatosis', 'Disease', 'MESH:D006432', (54, 69)) ('high iron Fe', 'Gene', '3077', (102, 114)) ('mutations', 'Var', (85, 94)) ('result of', 'Reg', (75, 84)) ('high iron Fe', 'Gene', (102, 114)) ('HFE', 'Gene', (116, 119)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (13, 27)) 108233 27774468 Two cases (patients with Q157H and N203K mutations) have been described with a polycythemia vera associated with a JAK2 mutation (the only cases with erythroid progenitors hypersensitive to EPO). ('hypersensitive', 'Disease', (172, 186)) ('JAK2', 'Gene', (115, 119)) ('polycythemia vera', 'Disease', 'MESH:D011087', (79, 96)) ('JAK2', 'Gene', '3717', (115, 119)) ('N203K mutations', 'Var', (35, 50)) ('Q157H', 'Var', (25, 30)) ('mutation', 'Var', (120, 128)) ('N203K', 'Mutation', 'rs1190391316', (35, 40)) ('Q157H', 'Mutation', 'rs61750991', (25, 30)) ('polycythemia vera', 'Disease', (79, 96)) ('polycythemia', 'Phenotype', 'HP:0001901', (79, 91)) ('patients', 'Species', '9606', (11, 19)) ('associated', 'Reg', (97, 107)) ('hypersensitive', 'Disease', 'MESH:D004342', (172, 186)) 108235 27774468 The absence of mutations in both the EGLN2 and EGLN3 genes (which encode PHD1 and PHD3, respectively) in individuals with erythrocytosis and the detection of an increasing number of heterozygous EGLN1 mutations pointed to the potential involvement of PHD2 in the regulation of the HIF-alpha subunit and the development of erythrocytosis. ('EGLN2', 'Gene', '112398', (37, 42)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (122, 136)) ('men', 'Species', '9606', (314, 317)) ('PHD1', 'Gene', (73, 77)) ('EGLN2', 'Gene', (37, 42)) ('erythrocytosis', 'Disease', (122, 136)) ('PHD3', 'Gene', '112399', (82, 86)) ('PHD3', 'Gene', (82, 86)) ('mutations', 'Var', (15, 24)) ('PHD1', 'Gene', '112398', (73, 77)) ('absence', 'NegReg', (4, 11)) ('EGLN1', 'Gene', '54583', (195, 200)) ('EGLN3', 'Gene', '112399', (47, 52)) ('mutations', 'Var', (201, 210)) ('EGLN3', 'Gene', (47, 52)) ('involvement', 'Reg', (236, 247)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (322, 336)) ('EGLN1', 'Gene', (195, 200)) ('men', 'Species', '9606', (243, 246)) 108238 27774468 Noteworthy, multiple single-nucleotide polymorphisms located in the noncoding regulatory regions of EGLN1 have been associated with the decreased hemoglobin that is observed in the Tibetan population adapted to living at high altitude. ('EGLN1', 'Gene', '54583', (100, 105)) ('hemoglobin', 'MPA', (146, 156)) ('EGLN1', 'Gene', (100, 105)) ('single-nucleotide polymorphisms', 'Var', (21, 52)) ('decreased hemoglobin', 'Phenotype', 'HP:0001903', (136, 156)) ('decreased', 'NegReg', (136, 145)) 108242 27774468 Functional study of the PHD2-D4E-C127S mutant showed a slightly increased activity compared with the wild-type protein. ('increased', 'PosReg', (64, 73)) ('PHD2-D4E-C127S', 'Var', (24, 38)) ('C127S', 'Mutation', 'rs12097901', (33, 38)) ('activity', 'MPA', (74, 82)) 108243 27774468 A recent publication reports that the Tibetan PHD2 haplotype (D4E/C127S) strikingly diminishes the interaction of PHD2 with p23, a HSP90 cochaperone, resulting in impaired PHD2 downregulation of the HIF pathway. ('downregulation', 'NegReg', (177, 191)) ('PHD2', 'Enzyme', (172, 176)) ('PHD2', 'Gene', (114, 118)) ('HSP90', 'Gene', '3320', (131, 136)) ('impaired', 'NegReg', (163, 171)) ('HIF pathway', 'Pathway', (199, 210)) ('p23', 'Gene', '8851', (124, 127)) ('C127S', 'Mutation', 'rs12097901', (66, 71)) ('diminishes', 'NegReg', (84, 94)) ('HSP90', 'Gene', (131, 136)) ('interaction', 'Interaction', (99, 110)) ('D4E/C127S', 'Var', (62, 71)) ('p23', 'Gene', (124, 127)) 108249 27774468 Germline mutations in the VHL tumor suppressor gene, which plays a major role in the direct downregulation of HIF, predispose patients to von Hippel-Lindau disease. ('Germline mutations', 'Var', (0, 18)) ('VHL tumor', 'Disease', (26, 35)) ('downregulation', 'NegReg', (92, 106)) ('von Hippel-Lindau disease', 'Disease', (138, 163)) ('predispose', 'Reg', (115, 125)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (138, 163)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('patients', 'Species', '9606', (126, 134)) ('VHL tumor', 'Disease', 'MESH:D006623', (26, 35)) 108252 27774468 For example, mutations in the Krebs cycle enzymes fumarate hydratase (FH) and succinate dehydrogenase (SDH) apparently activate HIF. ('fumarate hydratase', 'Gene', '2271', (50, 68)) ('succinate dehydrogenase', 'Gene', (78, 101)) ('activate', 'PosReg', (119, 127)) ('fumarate hydratase', 'Gene', (50, 68)) ('Krebs', 'Chemical', '-', (30, 35)) ('SDH', 'Gene', '6390', (103, 106)) ('FH', 'Gene', '2271', (70, 72)) ('succinate dehydrogenase', 'Gene', '6390', (78, 101)) ('SDH', 'Gene', (103, 106)) ('mutations', 'Var', (13, 22)) ('HIF', 'CPA', (128, 131)) 108254 27774468 Mutations to isocitrate dehydrogenase lead to substantially increased levels of 2-hydroxyglutarate, which is also proposed to inhibit the PHDs, although biochemical studies have revealed it is a weak PHD inhibitor and, in some studies, even a PHD activator. ('levels of 2-hydroxyglutarate', 'MPA', (70, 98)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (80, 98)) ('isocitrate dehydrogenase', 'Gene', (13, 37)) ('Mutations', 'Var', (0, 9)) ('increased levels of 2-hydroxyglutarate', 'Phenotype', 'HP:0012402', (60, 98)) ('PHDs', 'Chemical', 'MESH:D013929', (138, 142)) ('increased', 'PosReg', (60, 69)) 108255 27774468 Germline mutations in FH predispose to the development of papillary type II renal cancers and leiomyomas; germline mutations in SDH predispose to hereditary pheochromocytoma and paraganglioma (extra-adrenal pheochromocytoma) syndrome and rare renal cancers. ('extra-adrenal pheochromocytoma', 'Phenotype', 'HP:0006737', (193, 223)) ('SDH', 'Gene', '6390', (128, 131)) ('hereditary pheochromocytoma and paraganglioma (extra-adrenal pheochromocytoma) syndrome', 'Disease', 'MESH:D010673', (146, 233)) ('cancers', 'Phenotype', 'HP:0002664', (249, 256)) ('cancers', 'Phenotype', 'HP:0002664', (82, 89)) ('leiomyomas', 'Disease', (94, 104)) ('rare renal cancers', 'Disease', 'MESH:D007680', (238, 256)) ('men', 'Species', '9606', (50, 53)) ('FH', 'Gene', '2271', (22, 24)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (157, 173)) ('cancer', 'Phenotype', 'HP:0002664', (249, 255)) ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('leiomyomas', 'Disease', 'MESH:D007889', (94, 104)) ('renal cancer', 'Phenotype', 'HP:0009726', (243, 255)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (199, 223)) ('papillary type II renal cancers', 'Disease', (58, 89)) ('SDH', 'Gene', (128, 131)) ('renal cancer', 'Phenotype', 'HP:0009726', (76, 88)) ('papillary type II renal cancers', 'Disease', 'MESH:D007681', (58, 89)) ('rare renal cancers', 'Disease', (238, 256)) ('predispose to', 'Reg', (132, 145)) ('mutations', 'Var', (115, 124)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (207, 223)) ('paraganglioma', 'Phenotype', 'HP:0002668', (178, 191)) ('papillary type', 'Phenotype', 'HP:0007482', (58, 72)) 108257 27774468 Indeed, paragangliomas have already been described in patients with an erythrocytosis carrying a particular germline EGLN1 mutation (PHD2-H374R) and a EPAS1 mutation (HIF-2alpha-F374Y). ('H374R', 'Mutation', 'rs119476045', (138, 143)) ('paragangliomas', 'Phenotype', 'HP:0002668', (8, 22)) ('patients', 'Species', '9606', (54, 62)) ('F374Y', 'Mutation', 'rs150797491', (178, 183)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (71, 85)) ('PHD2-H374R', 'Var', (133, 143)) ('HIF-2alpha', 'Gene', (167, 177)) ('EPAS1', 'Gene', '2034', (151, 156)) ('paragangliomas', 'Disease', (8, 22)) ('EGLN1', 'Gene', (117, 122)) ('erythrocytosis', 'MPA', (71, 85)) ('EPAS1', 'Gene', (151, 156)) ('HIF-2alpha', 'Gene', '2034', (167, 177)) ('paragangliomas', 'Disease', 'MESH:D010235', (8, 22)) ('paraganglioma', 'Phenotype', 'HP:0002668', (8, 21)) ('EGLN1', 'Gene', '54583', (117, 122)) 108264 27774468 Mutations in EGLN1 or EPAS1 may not be sufficiently deleterious to induce high levels of HIF. ('EPAS1', 'Gene', (22, 27)) ('EGLN1', 'Gene', (13, 18)) ('Mutations', 'Var', (0, 9)) ('EGLN1', 'Gene', '54583', (13, 18)) ('EPAS1', 'Gene', '2034', (22, 27)) 108265 27774468 Indeed, mutations in EGLN1 may be compensated for by other PHD isoforms (PHD1 or PHD3) not sufficiently active to override erythrocytosis but sufficient to avoid tumor transformation. ('EGLN1', 'Gene', '54583', (21, 26)) ('erythrocytosis', 'MPA', (123, 137)) ('tumor', 'Phenotype', 'HP:0002664', (162, 167)) ('override', 'PosReg', (114, 122)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (123, 137)) ('tumor', 'Disease', (162, 167)) ('PHD3', 'Gene', '112399', (81, 85)) ('PHD3', 'Gene', (81, 85)) ('mutations', 'Var', (8, 17)) ('avoid', 'NegReg', (156, 161)) ('EGLN1', 'Gene', (21, 26)) ('PHD1', 'Gene', '112398', (73, 77)) ('PHD1', 'Gene', (73, 77)) ('tumor', 'Disease', 'MESH:D009369', (162, 167)) 108266 27774468 Regarding EPAS1 mutations, none of the germline mutations identified in patients with erythrocytosis target the sites of prolyl hydroxylation (Pro405 and Pro531), although Pro531 mutations have been reported in sporadic pheochromocytomas. ('pheochromocytomas', 'Disease', 'MESH:D010673', (220, 237)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (86, 100)) ('EPAS1', 'Gene', '2034', (10, 15)) ('pheochromocytomas', 'Disease', (220, 237)) ('reported', 'Reg', (199, 207)) ('prolyl', 'Chemical', '-', (121, 127)) ('mutations', 'Var', (16, 25)) ('EPAS1', 'Gene', (10, 15)) ('Pro405', 'Var', (143, 149)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (220, 237)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (220, 236)) ('patients', 'Species', '9606', (72, 80)) 108274 27774468 In the following paragraph, we outline early-stage studies showing how mutations to PHD2 and HIF-2alpha may have consequences for PHD-catalyzed HIF hydroxylation. ('PHD-catalyzed HIF hydroxylation', 'Disease', 'MESH:D011547', (130, 161)) ('HIF-2alpha', 'Gene', (93, 103)) ('consequences', 'Reg', (113, 125)) ('PHD2', 'Gene', (84, 88)) ('HIF-2alpha', 'Gene', '2034', (93, 103)) ('mutations', 'Var', (71, 80)) ('PHD-catalyzed HIF hydroxylation', 'Disease', (130, 161)) 108276 27774468 Structurally informed sequence comparisons indicate that the frameshift and nonsense mutations will produce PHD2 proteins lacking a competent catalytic domain (if expressed) and, thereby, prevent PHD2-catalyzed HIF degradation. ('PHD2-catalyzed HIF degradation', 'Disease', 'MESH:D055959', (196, 226)) ('PHD2-catalyzed HIF degradation', 'Disease', (196, 226)) ('prevent', 'NegReg', (188, 195)) ('lacking', 'NegReg', (122, 129)) ('nonsense mutations', 'Var', (76, 94)) ('frameshift', 'Var', (61, 71)) ('proteins', 'Protein', (113, 121)) ('PHD2', 'Gene', (108, 112)) 108277 27774468 On the basis of the available structural and biochemical information on the interaction of HIF and PHD2, five identified substituted residues, Asp254, Lys291, Pro317, Arg371, and His374, are located near the HIF/2-OG or ferrous iron binding sites of PHD2 (Figure 2). ('His374', 'Var', (179, 185)) ('Pro317', 'Chemical', '-', (159, 165)) ('His374', 'Chemical', '-', (179, 185)) ('Lys291', 'Chemical', '-', (151, 157)) ('Lys291', 'Var', (151, 157)) ('interaction', 'Interaction', (76, 87)) ('2-OG', 'Chemical', 'MESH:D007656', (212, 216)) ('Asp254', 'Chemical', '-', (143, 149)) ('Arg371', 'Chemical', '-', (167, 173)) ('Arg371', 'Var', (167, 173)) ('iron', 'Chemical', 'MESH:D007501', (228, 232)) ('Pro317', 'Var', (159, 165)) ('Asp254', 'Var', (143, 149)) 108278 27774468 Mutations to Asp254 lead to (near) complete loss of hydroxylation activity, likely because this residue is crucial for maintaining a substrate recognition loop in the active enzyme state (Table 3). ('hydroxylation activity', 'MPA', (52, 74)) ('Asp254', 'Chemical', '-', (13, 19)) ('loss', 'NegReg', (44, 48)) ('Mutations', 'Var', (0, 9)) ('Asp254', 'Gene', (13, 19)) ('substrate recognition loop', 'MPA', (133, 159)) 108279 27774468 PHD2-P317R (full-length) displays a kcat/Km value toward a HIF-2alpha (467-572) peptide that is 18% of that of wild-type PHD2. ('P317R', 'Mutation', 'rs80358193', (5, 10)) ('PHD2-P317R', 'Var', (0, 10)) ('HIF-2alpha', 'Gene', (59, 69)) ('HIF-2alpha', 'Gene', '2034', (59, 69)) 108280 27774468 In the PHD2 crystal structures, Pro317 is close to the iron coordinating HXD motif (His313 and Asp315 are two of the three iron ligating residues), whereas Arg371 is close to the other metal coordinating residue, His374 (beta9). ('metal', 'Chemical', 'MESH:D008670', (185, 190)) ('iron', 'Chemical', 'MESH:D007501', (55, 59)) ('Pro317', 'Var', (32, 38)) ('Arg371', 'Chemical', '-', (156, 162)) ('Pro317', 'Chemical', '-', (32, 38)) ('His313', 'Chemical', '-', (84, 90)) ('Asp315', 'Chemical', '-', (95, 101)) ('His374', 'Chemical', '-', (213, 219)) ('Arg371', 'Var', (156, 162)) ('Asp315', 'Var', (95, 101)) ('iron', 'Chemical', 'MESH:D007501', (123, 127)) 108281 27774468 In a PHD2.CODD(HIF-1alpha) complex crystal structure, Pro317 forms part of a hydrophobic region that interacts with the 310-helix of the hydroxylated LXXLAP motif (Figure 2). ('interacts', 'Interaction', (101, 110)) ('Pro317', 'Var', (54, 60)) ('HIF-1alpha', 'Gene', (15, 25)) ('Pro317', 'Chemical', '-', (54, 60)) ('HIF-1alpha', 'Gene', '3091', (15, 25)) 108282 27774468 Lys291 and Arg371 are relatively remote from the substrate-binding region; Arg371 is involved in making an internal salt-bridge interaction with Asp369 (Asp369 Odelta1-Arg371 Nepsilon, 3.2 A; Asp369 Odelta2-Arg371 NH2, 3.0 A) and thus likely has a structural role. ('Asp369', 'Chemical', '-', (192, 198)) ('Lys291', 'Chemical', '-', (0, 6)) ('involved', 'Reg', (85, 93)) ('Arg371', 'Chemical', '-', (207, 213)) ('Asp369', 'Chemical', '-', (145, 151)) ('Arg371', 'Chemical', '-', (75, 81)) ('Asp369 Odelta1-Arg371', 'Var', (153, 174)) ('Asp369', 'Chemical', '-', (153, 159)) ('Arg371', 'Var', (75, 81)) ('internal salt-bridge interaction', 'MPA', (107, 139)) ('Arg371', 'Chemical', '-', (168, 174)) ('salt', 'Chemical', 'MESH:D012492', (116, 120)) ('Arg371', 'Chemical', '-', (11, 17)) 108283 27774468 The presence of two different mutations at Arg371 highlights the importance of this residue for the function of PHD2, even though it is not at the iron binding site. ('iron', 'Chemical', 'MESH:D007501', (147, 151)) ('PHD2', 'Gene', (112, 116)) ('Arg371', 'Var', (43, 49)) ('Arg371', 'Chemical', '-', (43, 49)) 108284 27774468 Because His374 is one of the three iron binding residues ('facial triad'), arginine substitution at this position will likely substantially hinder iron binding and thereby ablate, or substantially reduce, activity. ('His374', 'Var', (8, 14)) ('arginine', 'Chemical', 'MESH:D001120', (75, 83)) ('hinder', 'NegReg', (140, 146)) ('reduce', 'NegReg', (197, 203)) ('iron', 'MPA', (147, 151)) ('His374', 'Chemical', '-', (8, 14)) ('activity', 'MPA', (205, 213)) ('iron', 'Chemical', 'MESH:D007501', (35, 39)) ('ablate', 'NegReg', (172, 178)) ('arginine substitution', 'Var', (75, 96)) ('iron', 'Chemical', 'MESH:D007501', (147, 151)) 108286 27774468 Ten heterozygous mutations have been identified in exon 12 of the EPAS1 gene, leading to HIF-2alpha variants. ('HIF-2alpha', 'Gene', '2034', (89, 99)) ('variants', 'Var', (100, 108)) ('EPAS1', 'Gene', '2034', (66, 71)) ('EPAS1', 'Gene', (66, 71)) ('HIF-2alpha', 'Gene', (89, 99)) 108287 27774468 These variants have been linked with idiopathic erythrocytosis, and in all cases, patients were diagnosed with elevated EPO levels. ('elevated', 'PosReg', (111, 119)) ('linked', 'Reg', (25, 31)) ('variants', 'Var', (6, 14)) ('idiopathic erythrocytosis', 'Disease', (37, 62)) ('patients', 'Species', '9606', (82, 90)) ('idiopathic erythrocytosis', 'Disease', 'MESH:D011086', (37, 62)) ('EPO levels', 'MPA', (120, 130)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (48, 62)) 108288 27774468 Interestingly, the majority of these missense mutations (I533V, P534L, M535T, M535V, M535I, G537W, G537R, D539E, and F540L) cluster close/C-terminal to one of the two hydroxylated proline residues (Pro531) in HIF-2alpha. ('HIF-2alpha', 'Gene', '2034', (209, 219)) ('I533V', 'Var', (57, 62)) ('F540L', 'Mutation', 'p.F540L', (117, 122)) ('M535T', 'Var', (71, 76)) ('D539E', 'Mutation', 'p.D539E', (106, 111)) ('proline', 'Chemical', 'MESH:D011392', (180, 187)) ('F540L', 'Var', (117, 122)) ('M535T', 'Mutation', 'p.M535T', (71, 76)) ('M535V', 'Mutation', 'rs137853037', (78, 83)) ('I533V', 'Mutation', 'p.I533V', (57, 62)) ('P534L', 'Mutation', 'p.P534L', (64, 69)) ('M535V', 'Var', (78, 83)) ('HIF-2alpha', 'Gene', (209, 219)) ('M535I', 'Mutation', 'p.M535I', (85, 90)) ('P534L', 'Var', (64, 69)) ('M535I', 'Var', (85, 90)) ('D539E', 'Var', (106, 111)) ('G537R', 'Var', (99, 104)) ('G537W', 'Mutation', 'rs137853036', (92, 97)) ('G537W', 'Var', (92, 97)) ('G537R', 'Mutation', 'rs137853036', (99, 104)) 108289 27774468 The combined biochemical and cellular assays suggest that most of these mutations may reduce both hydroxylation of HIF-2alpha by the PHDs (full-length) and subsequent recognition of (likely hydroxylated) HIF-2alpha by pVHL, except for mutations at Met535, which may only impair interactions with PHD2. ('mutations', 'Var', (72, 81)) ('HIF-2alpha', 'Gene', (204, 214)) ('HIF-2alpha', 'Gene', (115, 125)) ('PHDs', 'Chemical', 'MESH:D013929', (133, 137)) ('HIF-2alpha', 'Gene', '2034', (204, 214)) ('HIF-2alpha', 'Gene', '2034', (115, 125)) ('interactions', 'Interaction', (278, 290)) ('hydroxylation', 'MPA', (98, 111)) ('pVHL', 'Gene', '7428', (218, 222)) ('reduce', 'NegReg', (86, 92)) ('pVHL', 'Gene', (218, 222)) 108290 27774468 Although detailed insights into the molecular mechanism behind the predicted reduced binding of the HIF-2alpha variants with PHD2 are unclear, close inspection of a PHD2.CODD (HIF-1alpha) crystal structure suggests these mutated residues bind in a region with some conformational flexibility, suggesting they may reduce, but not completely block, HIF-2alpha substrate binding to PHD2. ('HIF-2alpha', 'Gene', (100, 110)) ('HIF-1alpha', 'Gene', (176, 186)) ('HIF-2alpha', 'Gene', '2034', (347, 357)) ('HIF-2alpha', 'Gene', '2034', (100, 110)) ('residues', 'Var', (229, 237)) ('variants', 'Var', (111, 119)) ('binding', 'Interaction', (368, 375)) ('reduce', 'NegReg', (313, 319)) ('HIF-1alpha', 'Gene', '3091', (176, 186)) ('HIF-2alpha', 'Gene', (347, 357)) ('mutated residues', 'Var', (221, 237)) 108300 27774468 Interestingly, the mutation in the fourth codon of PHD2 (D4E), recently identified independently by various groups, affects a strongly conserved amino acid in mammals, but not in lower vertebrates or in human PHD1 or PHD3. ('mutation', 'Var', (19, 27)) ('human', 'Species', '9606', (203, 208)) ('strongly conserved amino acid', 'MPA', (126, 155)) ('affects', 'Reg', (116, 123)) ('PHD1', 'Gene', '112398', (209, 213)) ('PHD1', 'Gene', (209, 213)) ('PHD3', 'Gene', '112399', (217, 221)) ('PHD3', 'Gene', (217, 221)) ('PHD2', 'Gene', (51, 55)) 108302 27774468 The Gln157 amino acid is only moderately conserved between mammals, and not within the PHD protein family (PHD1 and PHD3). ('PHD1', 'Gene', (107, 111)) ('Gln157 amino', 'Var', (4, 16)) ('PHD3', 'Gene', '112399', (116, 120)) ('PHD3', 'Gene', (116, 120)) ('PHD1', 'Gene', '112398', (107, 111)) ('Gln157', 'Chemical', '-', (4, 10)) 108303 27774468 The residues affected by the PHD2-P200Q and the PHD2-M202I mutations are conserved in all vertebrates, but only Pro200 is conserved in both PHD1 and PHD3. ('PHD3', 'Gene', (149, 153)) ('M202I', 'Mutation', 'p.M202I', (53, 58)) ('PHD2-P200Q', 'Var', (29, 39)) ('PHD2-M202I', 'Gene', (48, 58)) ('PHD1', 'Gene', '112398', (140, 144)) ('PHD1', 'Gene', (140, 144)) ('P200Q', 'Mutation', 'p.P200Q', (34, 39)) ('PHD3', 'Gene', '112399', (149, 153)) 108304 27774468 Both the PHD2-P200Q and M202I mutations affect residues that immediately flank C201, which has been shown to chelate zinc and cadmium ions, providing evidence for the existence of a second metal binding site on PHD2. ('M202I', 'Var', (24, 29)) ('metal', 'Chemical', 'MESH:D008670', (189, 194)) ('PHD2-P200Q', 'Gene', (9, 19)) ('chelate', 'Interaction', (109, 116)) ('M202I', 'Mutation', 'p.M202I', (24, 29)) ('affect', 'Reg', (40, 46)) ('C201', 'Gene', (79, 83)) ('P200Q', 'Mutation', 'p.P200Q', (14, 19)) ('cadmium', 'Chemical', 'MESH:D002104', (126, 133)) 108305 27774468 In contrast, the PHD2-N203K, K204E, G285R, and K291I mutations affect residues not strictly conserved in all vertebrates. ('G285R', 'Var', (36, 41)) ('affect', 'Reg', (63, 69)) ('G285R', 'SUBSTITUTION', 'None', (36, 41)) ('PHD2-N203K', 'Var', (17, 27)) ('K291I', 'Var', (47, 52)) ('K204E', 'Var', (29, 34)) ('residues', 'MPA', (70, 78)) ('K204E', 'Mutation', 'p.K204E', (29, 34)) ('N203K', 'Mutation', 'rs1190391316', (22, 27)) ('K291I', 'Mutation', 'p.K291I', (47, 52)) 108307 27774468 Other strictly conserved residues in metazoans and both PHD1 and PHD3 have been targeted by mutations PHD2-P304L, P317R, W334R, R371C, R371H, and H374R, with the latter mutation in one of the three invariant iron coordination sites and being associated with paraganglioma. ('R371C', 'Var', (128, 133)) ('P317R', 'Var', (114, 119)) ('paraganglioma', 'Disease', (258, 271)) ('H374R', 'Mutation', 'rs119476045', (146, 151)) ('paraganglioma', 'Disease', 'MESH:D010235', (258, 271)) ('P304L', 'Mutation', 'rs1293106237', (107, 112)) ('W334R', 'Var', (121, 126)) ('P317R', 'Mutation', 'rs80358193', (114, 119)) ('PHD3', 'Gene', '112399', (65, 69)) ('PHD3', 'Gene', (65, 69)) ('PHD1', 'Gene', (56, 60)) ('R371C', 'Mutation', 'p.R371C', (128, 133)) ('R371H', 'Mutation', 'rs119476044', (135, 140)) ('R371H', 'Var', (135, 140)) ('paraganglioma', 'Phenotype', 'HP:0002668', (258, 271)) ('PHD2-P304L', 'Gene', (102, 112)) ('W334R', 'Mutation', 'p.W334R', (121, 126)) ('associated', 'Reg', (242, 252)) ('PHD1', 'Gene', '112398', (56, 60)) ('iron', 'Chemical', 'MESH:D007501', (208, 212)) ('H374R', 'Var', (146, 151)) 108313 27774468 A peptide containing the proline of C-terminal ODD domain of HIF-1alpha (P564) is normally used (amino acids 556-574 or 549-575) and is amenable to mass spectrometric analyses. ('HIF-1alpha', 'Gene', '3091', (61, 71)) ('549-575', 'Var', (120, 127)) ('proline', 'Chemical', 'MESH:D011392', (25, 32)) ('HIF-1alpha', 'Gene', (61, 71)) ('amino acids 556-574', 'Var', (97, 116)) ('men', 'Species', '9606', (137, 140)) 108314 27774468 It is also noticeable that hydroxylation induces a mobility shift of a GAL4 fusion protein containing a HIF-1alpha peptide (amino acids, 531-652) after electrophoresis on an sodium dodecyl sulfate- polyacrylamide gel electrophoresis. ('HIF-1alpha', 'Gene', (104, 114)) ('GAL4 fusion protein', 'Protein', (71, 90)) ('mobility shift', 'MPA', (51, 65)) ('induces', 'Reg', (41, 48)) ('hydroxylation', 'Var', (27, 40)) ('sodium dodecyl sulfate', 'Chemical', 'MESH:D012967', (174, 196)) ('polyacrylamide gel', 'Chemical', 'MESH:C016680', (198, 216)) ('HIF-1alpha', 'Gene', '3091', (104, 114)) 108318 27774468 In the case of the P317R mutation, functional studies supported a loss of function of the mutants instead of a dominant negative inhibitory effect. ('P317R', 'Mutation', 'rs80358193', (19, 24)) ('P317R', 'Var', (19, 24)) ('loss', 'NegReg', (66, 70)) 108319 27774468 The mutations substantially decrease, although do not abolish completely, PHD2 activity, with the exception of two mutations with a severe loss of function (PHD2-H374R and PHD2-D254H). ('activity', 'MPA', (79, 87)) ('H374R', 'Mutation', 'rs119476045', (162, 167)) ('D254H', 'Var', (177, 182)) ('PHD2-H374R', 'Var', (157, 167)) ('decrease', 'NegReg', (28, 36)) ('PHD2', 'Enzyme', (74, 78)) ('D254H', 'SUBSTITUTION', 'None', (177, 182)) 108320 27774468 Some of the mutants even present with a very subtle loss of activity, close to the wild-type protein (PHD2-P200Q, PHD2-R371H in one study and P304L [Lee, unpublished data, 2012]). ('P304L', 'Var', (142, 147)) ('P304L', 'Mutation', 'rs1293106237', (142, 147)) ('R371H', 'Mutation', 'rs119476044', (119, 124)) ('activity', 'MPA', (60, 68)) ('PHD2-P200Q', 'Var', (102, 112)) ('P200Q', 'Mutation', 'p.P200Q', (107, 112)) 108321 27774468 More-sensitive assays should be developed to determine subtle effects of these PHD2 mutations (and polymorphisms such as PHD2-Q157H) that are difficult to study with current in vitro and in cellulo assays based on overexpressed proteins. ('mutations', 'Var', (84, 93)) ('PHD2', 'Gene', (79, 83)) ('Q157H', 'Mutation', 'rs61750991', (126, 131)) 108322 27774468 The studies, in some instances, showed the same effect of the mutants on different HIF-alpha isoforms (HIF-1alpha and HIF-2alpha) and under various oxygen concentrations. ('mutants', 'Var', (62, 69)) ('HIF-1alpha', 'Gene', (103, 113)) ('HIF-2alpha', 'Gene', (118, 128)) ('oxygen', 'Chemical', 'MESH:D010100', (148, 154)) ('HIF-1alpha', 'Gene', '3091', (103, 113)) ('HIF-2alpha', 'Gene', '2034', (118, 128)) 108323 27774468 Some PHD2 mutants (including the PHD2-P200Q mutant) have been tested for the capability to shuttle between the cytoplasm and the nucleus, but so far, no effect of the mutations has been observed (Ladroue et al; Gardie and Ladroue, unpublished data, 2010). ('shuttle between the cytoplasm', 'MPA', (91, 120)) ('PHD2', 'Gene', (5, 9)) ('P200Q', 'Mutation', 'p.P200Q', (38, 43)) ('mutants', 'Var', (10, 17)) 108324 27774468 Two implications that followed the initial identification of the family with a heterozygous PHD2-P317R mutation and erythrocytosis are that in the EPO pathway, the PHDs are not redundant, such that loss of PHD2 function could not be compensated for by PHD1 or PHD3, and the EPO pathway is sensitive to modest changes in PHD2 activity, such that even a heterozygous PHD2 mutation was sufficient to induce erythrocytosis. ('PHD2', 'Gene', (365, 369)) ('PHD1', 'Gene', '112398', (252, 256)) ('PHD2-P317R', 'Gene', (92, 102)) ('mutation', 'Var', (370, 378)) ('P317R', 'Mutation', 'rs80358193', (97, 102)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (404, 418)) ('PHD1', 'Gene', (252, 256)) ('PHD3', 'Gene', '112399', (260, 264)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (116, 130)) ('PHD3', 'Gene', (260, 264)) ('induce', 'Reg', (397, 403)) ('erythrocytosis', 'MPA', (404, 418)) ('PHDs', 'Chemical', 'MESH:D013929', (164, 168)) 108326 27774468 In such mouse models, one has the capacity to genetically introduce knockout of the gene of interest (in this case, Phd2) in a manner that can be global, tissue-specific, and/or inducible. ('Phd2', 'Gene', (116, 120)) ('knockout', 'Var', (68, 76)) ('mouse', 'Species', '10090', (8, 13)) 108329 27774468 To circumvent this embryonic lethality, global tamoxifen-inducible knockouts of Phd2 in the mouse have been generated and have been found to result in massive erythrocytosis with markedly elevated Epo levels. ('result in', 'Reg', (141, 150)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (159, 173)) ('embryonic lethality', 'Disease', (19, 38)) ('tamoxifen', 'Chemical', 'MESH:D013629', (47, 56)) ('Epo levels', 'MPA', (197, 207)) ('knockouts', 'Var', (67, 76)) ('erythrocytosis', 'MPA', (159, 173)) ('elevated', 'PosReg', (188, 196)) ('Phd2', 'Gene', (80, 84)) ('mouse', 'Species', '10090', (92, 97)) ('embryonic lethality', 'Disease', 'MESH:D020964', (19, 38)) 108331 27774468 Consistent with the latter, conditional knockout of Phd2 that targets these renal interstitial cells, using either a CD68-cre or a Pax3-cre transgene, also results in marked erythrocytosis. ('CD68', 'Gene', (117, 121)) ('knockout', 'Var', (40, 48)) ('results in', 'Reg', (156, 166)) ('CD68', 'Gene', '968', (117, 121)) ('Phd2', 'Gene', (52, 56)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (174, 188)) ('erythrocytosis', 'MPA', (174, 188)) 108332 27774468 With regard to the issue of the sensitivity of the EPO pathway to PHD2 gene dosage, a knockin mouse model that bears a heterozygous amino acid substitution (Phd2-P294R) homologous to the first reported human EGLN1 mutation (PHD2-P317R) displays erythrocytosis. ('PHD2-P317R', 'Var', (224, 234)) ('EGLN1', 'Gene', (208, 213)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (245, 259)) ('human', 'Species', '9606', (202, 207)) ('P317R', 'Mutation', 'rs80358193', (229, 234)) ('EGLN1', 'Gene', '54583', (208, 213)) ('mouse', 'Species', '10090', (94, 99)) ('erythrocytosis', 'MPA', (245, 259)) ('P294R', 'Mutation', 'p.P294R', (162, 167)) 108334 27774468 The degree of erythrocytosis observed in this mouse line, which is modest, is comparable to that seen with Phd2+/- mice, consistent with haploinsufficiency being the mechanism for this particular mutation (as opposed to a dominant negative mechanism). ('erythrocytosis', 'Phenotype', 'HP:0001901', (14, 28)) ('mutation', 'Var', (196, 204)) ('haploinsufficiency', 'Disease', 'MESH:D058495', (137, 155)) ('erythrocytosis', 'MPA', (14, 28)) ('mouse', 'Species', '10090', (46, 51)) ('mice', 'Species', '10090', (115, 119)) ('haploinsufficiency', 'Disease', (137, 155)) 108335 27774468 The erythrocytosis is reversed by heterozygous knockout of Hif2a, but not Hif1a, consistent with a substantial body of work that identifies HIF-2alpha as the key HIF-alpha isoform regulating EPO in adult mammals. ('erythrocytosis', 'Phenotype', 'HP:0001901', (4, 18)) ('erythrocytosis', 'MPA', (4, 18)) ('Hif2a', 'Gene', (59, 64)) ('Hif1a', 'Gene', (74, 79)) ('knockout', 'Var', (47, 55)) ('HIF-2alpha', 'Gene', (140, 150)) ('HIF-2alpha', 'Gene', '2034', (140, 150)) ('Hif2a', 'Gene', '2034', (59, 64)) ('Hif1a', 'Gene', '3091', (74, 79)) 108336 27774468 Indeed, as mentioned previously, mutations in the EPAS1 gene are another cause of erythrocytosis. ('EPAS1', 'Gene', '2034', (50, 55)) ('EPAS1', 'Gene', (50, 55)) ('mutations', 'Var', (33, 42)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (82, 96)) ('cause', 'Reg', (73, 78)) ('men', 'Species', '9606', (11, 14)) ('erythrocytosis', 'Disease', (82, 96)) 108337 27774468 The Epo levels in the Phd2P294R/+ mice, as in the Phd2+/- mice, are normal, recapitulating the findings in the human patients that bear the homologous mutation. ('mice', 'Species', '10090', (34, 38)) ('human', 'Species', '9606', (111, 116)) ('mice', 'Species', '10090', (58, 62)) ('Phd2P294R/+', 'Var', (22, 33)) ('patients', 'Species', '9606', (117, 125)) ('Epo levels', 'MPA', (4, 14)) 108339 27774468 For example, deletion of Phd2 in hematopoietic precursors using a Vav-cre transgene induces erythrocytosis, and bone marrow cells derived from these as well as those from an induced globally deleted Phd2 mouse line display hypersensitivity to Epo, as assessed by erythroid burst forming unit assays. ('Phd2', 'Gene', (25, 29)) ('hypersensitivity', 'Disease', (223, 239)) ('hypersensitivity', 'Disease', 'MESH:D004342', (223, 239)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (92, 106)) ('deletion', 'Var', (13, 21)) ('mouse', 'Species', '10090', (204, 209)) ('erythrocytosis', 'MPA', (92, 106)) ('Vav', 'Gene', (66, 69)) ('Vav', 'Gene', '22324', (66, 69)) ('induces', 'Reg', (84, 91)) 108340 27774468 This is reminiscent of Chuvash polycythemia due to the homozygous hypomorphic mutation in the Vhl gene. ('mutation', 'Var', (78, 86)) ('Chuvash polycythemia', 'Disease', (23, 43)) ('Vhl', 'Gene', '7428', (94, 97)) ('polycythemia', 'Phenotype', 'HP:0001901', (31, 43)) ('Chuvash polycythemia', 'Disease', 'MESH:C563918', (23, 43)) ('Vhl', 'Gene', (94, 97)) 108342 27774468 Moreover, loss of Phd2 in hematopoietic stem cells induced by either a CD68-driven or globally inducible cre transgene results in increased numbers of Lineage- Sca1+ c-Kit+ cells, which are early HSCs, and subsets of these cells, including multipotent progenitors MPP1, MPP2, and MPP3. ('loss', 'Var', (10, 14)) ('MPP2', 'Gene', (270, 274)) ('Sca1', 'Gene', '6310', (160, 164)) ('MPP2', 'Gene', '4355', (270, 274)) ('MPP3', 'Gene', '4356', (280, 284)) ('Phd2', 'Gene', (18, 22)) ('MPP1', 'Gene', (264, 268)) ('MPP3', 'Gene', (280, 284)) ('MPP1', 'Gene', '4354', (264, 268)) ('CD68', 'Gene', (71, 75)) ('increased', 'PosReg', (130, 139)) ('c-Kit', 'Gene', (166, 171)) ('c-Kit', 'Gene', '3815', (166, 171)) ('Sca1', 'Gene', (160, 164)) ('CD68', 'Gene', '968', (71, 75)) 108343 27774468 Observations of patients carrying germline mutations in the EGLN1 gene showed a relatively homogeneous phenotype that can be presumed to be erythrocytosis. ('EGLN1', 'Gene', (60, 65)) ('patients', 'Species', '9606', (16, 24)) ('germline mutations', 'Var', (34, 52)) ('EGLN1', 'Gene', '54583', (60, 65)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (140, 154)) ('erythrocytosis', 'Disease', (140, 154)) 108346 27774468 In addition, only a minority of the erythrocytosis-associated mutations are located in the active site of PHD2, so as to directly affect either the 2-OG or iron-binding amino acids. ('iron-binding amino acids', 'MPA', (156, 180)) ('2-OG', 'Chemical', 'MESH:D007656', (148, 152)) ('affect', 'Reg', (130, 136)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (36, 50)) ('PHD2', 'Gene', (106, 110)) ('iron', 'Chemical', 'MESH:D007501', (156, 160)) ('erythrocytosis-associated', 'Disease', (36, 61)) ('mutations', 'Var', (62, 71)) ('2-OG', 'MPA', (148, 152)) 108349 27774468 As proof of this, a mouse model expressing a mutation homologous to the first reported heterozygous mutation, PHD2-P317R, exhibits erythrocytosis with inappropriately normal serum EPO levels. ('erythrocytosis', 'Phenotype', 'HP:0001901', (131, 145)) ('P317R', 'Mutation', 'rs80358193', (115, 120)) ('PHD2-P317R', 'Var', (110, 120)) ('serum EPO levels', 'MPA', (174, 190)) ('erythrocytosis', 'MPA', (131, 145)) ('exhibits', 'Reg', (122, 130)) ('mouse', 'Species', '10090', (20, 25)) 108350 27774468 Similar results were obtained with Phd2+/- mice; thus, a heterozygous mutation is sufficient to cause the erythrocytosis phenotype. ('mice', 'Species', '10090', (43, 47)) ('erythrocytosis phenotype', 'MPA', (106, 130)) ('cause', 'Reg', (96, 101)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (106, 120)) ('mutation', 'Var', (70, 78)) 108359 27774468 Future research implementing next-generation sequencing technology will hopefully shed more light on additional causal mutations, not only in the coding sequence of the PHD2 gene, but also in its regulatory regions, as well as potentially even other genes that affect the HIF pathway. ('PHD2', 'Gene', (169, 173)) ('HIF pathway', 'Pathway', (272, 283)) ('mutations', 'Var', (119, 128)) ('men', 'Species', '9606', (21, 24)) ('affect', 'Reg', (261, 267)) 108383 26768605 Variables employed for univariate analyses were location of the lesion (pancreatic head, body/tail), size of the lesion (<=10, 10-20 mm, >20 mm), needle size (19G vs. 22G vs. 25G), presence or absence of cystic degeneration, grading of malignancy (G1 or G2/NEC), grading of fibrosis (<30 vs. >=30 %), and period during which EUS-FNA procedure was performed (period I: 1998-2008, comprising the first 30 cases; period II: 2009-2014, comprising the remaining 28 cases). ('pancreatic', 'Disease', (72, 82)) ('19G', 'Var', (159, 162)) ('<=10', 'Var', (121, 125)) ('cystic degeneration', 'Disease', 'MESH:C538364', (204, 223)) ('cystic degeneration', 'Phenotype', 'HP:0007667', (204, 223)) ('cystic degeneration', 'Disease', (204, 223)) ('malignancy', 'Disease', 'MESH:D009369', (236, 246)) ('pancreatic', 'Disease', 'MESH:D010195', (72, 82)) ('malignancy', 'Disease', (236, 246)) ('fibrosis', 'Disease', 'MESH:D005355', (274, 282)) ('fibrosis', 'Disease', (274, 282)) 108401 26768605 Iso- or lowintensity appearance of pNENs on T2-WI had 100 % sensitivity, 81.8 % specificity, and 96.6 % diagnostic accuracy for the presence of rich fibrosis. ('pNENs', 'Gene', (35, 40)) ('fibrosis', 'Disease', (149, 157)) ('fibrosis', 'Disease', 'MESH:D005355', (149, 157)) ('lowintensity', 'Var', (8, 20)) ('Iso-', 'Var', (0, 4)) 108410 26768605 In addition, serotonin has been shown to stimulate fibroblast mitosis in cell cultures. ('serotonin', 'Var', (13, 22)) ('stimulate', 'PosReg', (41, 50)) ('mitosis', 'Disease', (62, 69)) ('serotonin', 'Chemical', 'MESH:D012701', (13, 22)) ('mitosis', 'Disease', 'None', (62, 69)) 108435 26700204 Recurrent mutations of chromatin remodeling genes and kinase receptors in pheochromocytomas and paragangliomas Pheochromocytomas and paragangliomas (PPGLs) are genetically heterogeneous tumors of neural crest origin, but the molecular basis of most PPGLs is unknown. ('paragangliomas', 'Disease', (133, 147)) ('paragangliomas', 'Disease', 'MESH:D010235', (96, 110)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('paragangliomas', 'Phenotype', 'HP:0002668', (96, 110)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (74, 91)) ('paraganglioma', 'Phenotype', 'HP:0002668', (133, 146)) ('gliomas', 'Phenotype', 'HP:0009733', (103, 110)) ('tumors', 'Phenotype', 'HP:0002664', (186, 192)) ('paragangliomas', 'Disease', 'MESH:D010235', (133, 147)) ('tumor', 'Phenotype', 'HP:0002664', (186, 191)) ('paragangliomas', 'Phenotype', 'HP:0002668', (133, 147)) ('paragangliomas', 'Disease', (96, 110)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (74, 90)) ('tumors', 'Disease', (186, 192)) ('pheochromocytomas', 'Disease', (74, 91)) ('gliomas', 'Phenotype', 'HP:0009733', (140, 147)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (74, 91)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (111, 128)) ('Pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (111, 147)) ('tumors', 'Disease', 'MESH:D009369', (186, 192)) ('mutations', 'Var', (10, 19)) 108438 26700204 We detected mutations in chromatin remodeling genes, including histone-methyltransferases, histone-demethylases and histones in 11 samples from 8 patients (20%). ('mutations', 'Var', (12, 21)) ('histones', 'Protein', (116, 124)) ('chromatin remodeling genes', 'Gene', (25, 51)) ('histone-demethylases', 'Enzyme', (91, 111)) ('patients', 'Species', '9606', (146, 154)) ('histone-methyltransferases', 'Enzyme', (63, 89)) 108439 26700204 In particular, we characterized a new cancer syndrome involving PPGLs and giant cell tumors of bone (GCT) caused by a postzygotic G34W mutation of the histone 3.3 gene, H3F3A. ('H3F3A', 'Gene', (169, 174)) ('cancer', 'Phenotype', 'HP:0002664', (38, 44)) ('tumors of bone', 'Phenotype', 'HP:0010622', (85, 99)) ('giant cell tumors of bone', 'Phenotype', 'HP:0011847', (74, 99)) ('G34W', 'Var', (130, 134)) ('G34W', 'Mutation', 'p.G34W', (130, 134)) ('giant cell tumors of bone', 'Disease', 'MESH:D018212', (74, 99)) ('caused by', 'Reg', (106, 115)) ('GCT', 'Phenotype', 'HP:0011847', (101, 104)) ('H3F3A', 'Gene', '3020', (169, 174)) ('cancer syndrome', 'Disease', 'MESH:D009369', (38, 53)) ('cancer syndrome', 'Disease', (38, 53)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('giant cell tumors of bone', 'Disease', (74, 99)) ('tumors', 'Phenotype', 'HP:0002664', (85, 91)) 108440 26700204 Furthermore, mutations in kinase genes were detected in samples from 15 patients (37%). ('mutations', 'Var', (13, 22)) ('detected', 'Reg', (44, 52)) ('kinase genes', 'Gene', (26, 38)) ('patients', 'Species', '9606', (72, 80)) 108441 26700204 Among those, a novel germline kinase domain mutation of MERTK detected in a patient with PPGL and medullary thyroid carcinoma was found to activate signaling downstream of this receptor. ('thyroid carcinoma', 'Disease', 'MESH:D013964', (108, 125)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (108, 125)) ('signaling downstream', 'MPA', (148, 168)) ('germline kinase domain mutation', 'Var', (21, 52)) ('thyroid carcinoma', 'Disease', (108, 125)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (98, 125)) ('carcinoma', 'Phenotype', 'HP:0030731', (116, 125)) ('patient', 'Species', '9606', (76, 83)) ('MERTK', 'Gene', '10461', (56, 61)) ('activate', 'PosReg', (139, 147)) ('MERTK', 'Gene', (56, 61)) 108442 26700204 Additionally, a somatic oncogenic hotspot FGFR1 mutation was found in a sporadic tumor. ('FGFR1', 'Gene', (42, 47)) ('sporadic tumor', 'Disease', (72, 86)) ('mutation', 'Var', (48, 56)) ('FGFR1', 'Gene', '2260', (42, 47)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('sporadic tumor', 'Disease', 'MESH:D009369', (72, 86)) 108445 26700204 Over 40% of these tumors are caused by a dominant driver mutation in one of various susceptibility genes involving a broad range of pathways. ('mutation', 'Var', (57, 65)) ('caused by', 'Reg', (29, 38)) ('tumors', 'Disease', 'MESH:D009369', (18, 24)) ('tumors', 'Disease', (18, 24)) ('tumors', 'Phenotype', 'HP:0002664', (18, 24)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 108452 26700204 A separate cohort of 136 pheochromocytoma or paraganglioma tumor only samples was used for verification of some of the detected mutations (Suppl. ('paraganglioma tumor', 'Disease', (45, 64)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (25, 41)) ('mutations', 'Var', (128, 137)) ('paraganglioma', 'Phenotype', 'HP:0002668', (45, 58)) ('pheochromocytoma', 'Disease', (25, 41)) ('paraganglioma tumor', 'Disease', 'MESH:D010235', (45, 64)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (25, 41)) ('tumor', 'Phenotype', 'HP:0002664', (59, 64)) 108459 26700204 The somatic nature of selected variants was verified in the four paired cases and in an additional 11 samples for which matched germline or tumor DNA was available. ('tumor', 'Disease', 'MESH:D009369', (140, 145)) ('variants', 'Var', (31, 39)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('tumor', 'Disease', (140, 145)) 108460 26700204 DNA from fresh-frozen or formalin-fixed paraffin-embedded (FFPE) sections from the various tumor and nontumor tissues from two cases carrying a H3F3A c.103 G>T, p.G34W mutation, as well as three unrelated PPGLs, and four sporadic GCTs were used to quantify variant allele representation. ('GCT', 'Phenotype', 'HP:0011847', (230, 233)) ('H3F3A', 'Gene', '3020', (144, 149)) ('p.G34W', 'Mutation', 'p.G34W', (161, 167)) ('tumor', 'Phenotype', 'HP:0002664', (104, 109)) ('tumor', 'Disease', (104, 109)) ('tumor', 'Disease', 'MESH:D009369', (91, 96)) ('H3F3A', 'Gene', (144, 149)) ('formalin', 'Chemical', 'MESH:D005557', (25, 33)) ('p.G34W', 'Var', (161, 167)) ('paraffin', 'Chemical', 'MESH:D010232', (40, 48)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('c.103 G>T', 'Mutation', 'c.103G>T', (150, 159)) ('tumor', 'Disease', (91, 96)) ('c.103 G>T', 'Var', (150, 159)) ('tumor', 'Disease', 'MESH:D009369', (104, 109)) 108461 26700204 A similar approach was used to detect the MET c.2416G>A; p.V806M variant in samples from three individuals with familial pheochromocytoma without a known driver mutation, including germline DNA from two affected siblings and FFPE from a nonpheochromocytoma tissue section from their affected father, along with unrelated samples. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (121, 137)) ('nonpheochromocytoma', 'Disease', (237, 256)) ('familial pheochromocytoma', 'Disease', 'MESH:C531777', (112, 137)) ('p.V806M', 'Mutation', 'rs2599795', (57, 64)) ('familial pheochromocytoma', 'Disease', (112, 137)) ('MET c.2416G>A; p.V806M', 'Var', (42, 64)) ('nonpheochromocytoma', 'Disease', 'None', (237, 256)) ('c.2416G>A', 'Mutation', 'rs2599795', (46, 55)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (240, 256)) 108463 26700204 The Mutation Quantifier tool of Mutation Surveyor was used to measure frequency of the H3F3A c.103 G>T, p.G34W mutation, expressed as % of the mutant allele in the tumor samples, and calculated as described in Suppl. ('tumor', 'Disease', (164, 169)) ('c.103 G>T', 'Mutation', 'c.103G>T', (93, 102)) ('p.G34W', 'Mutation', 'p.G34W', (104, 110)) ('H3F3A', 'Gene', '3020', (87, 92)) ('c.103 G>T', 'Var', (93, 102)) ('tumor', 'Disease', 'MESH:D009369', (164, 169)) ('H3F3A', 'Gene', (87, 92)) ('tumor', 'Phenotype', 'HP:0002664', (164, 169)) ('p.G34W', 'Var', (104, 110)) 108465 26700204 Normalized data from the three tumors with H3F3A G34W mutation and from 36 tumors without this mutation were used for gene set enrichment analysis (GSEA), as detailed in Suppl. ('tumors', 'Disease', 'MESH:D009369', (75, 81)) ('GSEA', 'Chemical', '-', (148, 152)) ('tumor', 'Phenotype', 'HP:0002664', (31, 36)) ('H3F3A', 'Gene', (43, 48)) ('tumors', 'Disease', (31, 37)) ('tumors', 'Phenotype', 'HP:0002664', (31, 37)) ('tumors', 'Disease', 'MESH:D009369', (31, 37)) ('G34W', 'Var', (49, 53)) ('tumors', 'Phenotype', 'HP:0002664', (75, 81)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('G34W', 'Mutation', 'p.G34W', (49, 53)) ('H3F3A', 'Gene', '3020', (43, 48)) ('tumors', 'Disease', (75, 81)) 108467 26700204 We used the full length amino acid sequence for human histone H3F3A (ENST00000366813) and computationally modeled the wild-type (WT) and the G34W mutant. ('H3F3A', 'Gene', (62, 67)) ('human', 'Species', '9606', (48, 53)) ('H3F3A', 'Gene', '3020', (62, 67)) ('G34W', 'Var', (141, 145)) ('G34W', 'Mutation', 'p.G34W', (141, 145)) 108474 26700204 Proteins were detected with the following antibodies: H3K27me3, H3K36me3, Histone H3, MYCN, MERTK, phospho ERK (all from Cell Signaling Technology) or beta-actin (Sigma-Aldrich, #A2228). ('H3K36me3', 'Var', (64, 72)) ('Histone H3', 'Protein', (74, 84)) ('MERTK', 'Gene', '10461', (92, 97)) ('H3', 'Chemical', 'MESH:C012616', (54, 56)) ('H3K27me3', 'Var', (54, 62)) ('MYCN', 'Gene', (86, 90)) ('H3', 'Chemical', 'MESH:C012616', (64, 66)) ('H3', 'Chemical', 'MESH:C012616', (82, 84)) ('MERTK', 'Gene', (92, 97)) ('beta-actin', 'Gene', '728378', (151, 161)) ('MYCN', 'Gene', '4613', (86, 90)) ('beta-actin', 'Gene', (151, 161)) ('Proteins', 'Protein', (0, 8)) 108481 26700204 We next explored genes that had not been implicated in PPGL tumorigenesis, specifically searching for variants belonging to the same functional or structural class and found two gene categories that were recurrently mutated in our series (Fig.1, Table 1): 11 high-scoring variants (11/43, 25.6%) were found in chromatin remodeling genes, including histone (H3F3A), histone chaperone ATRX, methyltransferases (KMT2B, EZH2 and SETD2), demethylases (JMJD1C, KDM2B), of 8 patients. ('JMJD1C', 'Gene', (447, 453)) ('SETD2', 'Gene', '29072', (425, 430)) ('EZH2', 'Gene', (416, 420)) ('EZH2', 'Gene', '2146', (416, 420)) ('tumor', 'Disease', (60, 65)) ('H3F3A', 'Gene', '3020', (357, 362)) ('variants', 'Var', (272, 280)) ('demethylases', 'Enzyme', (433, 445)) ('tumor', 'Disease', 'MESH:D009369', (60, 65)) ('KDM2B', 'Gene', (455, 460)) ('KMT2B', 'Gene', '9757', (409, 414)) ('methyltransferases', 'Enzyme', (389, 407)) ('H3F3A', 'Gene', (357, 362)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('ATRX', 'Gene', (383, 387)) ('JMJD1C', 'Gene', '221037', (447, 453)) ('ATRX', 'Gene', '546', (383, 387)) ('KMT2B', 'Gene', (409, 414)) ('KDM2B', 'Gene', '84678', (455, 460)) ('SETD2', 'Gene', (425, 430)) ('patients', 'Species', '9606', (468, 476)) 108482 26700204 These 27 variants were found somatically and in the germline, had few overlaps between the two groups (only 3 tumors had variants in both gene groups), and predominantly targeted PPGLs without a recognizable germline mutation (Fig. ('tumor', 'Phenotype', 'HP:0002664', (110, 115)) ('tumors', 'Disease', (110, 116)) ('targeted', 'Reg', (170, 178)) ('tumors', 'Disease', 'MESH:D009369', (110, 116)) ('tumors', 'Phenotype', 'HP:0002664', (110, 116)) ('variants', 'Var', (9, 17)) ('PPGLs', 'Protein', (179, 184)) 108483 26700204 Within the first group, we detected a mutation of the histone 3.3 encoding gene, H3F3A, which was shared by the exome of three tumors from the same patient, suggesting that the mutation was inherited as a driver event in these tumors (Fig.2a). ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('mutation', 'Var', (177, 185)) ('tumors', 'Disease', (127, 133)) ('tumors', 'Phenotype', 'HP:0002664', (127, 133)) ('H3F3A', 'Gene', (81, 86)) ('tumors', 'Disease', (227, 233)) ('tumors', 'Disease', 'MESH:D009369', (227, 233)) ('tumors', 'Disease', 'MESH:D009369', (127, 133)) ('tumors', 'Phenotype', 'HP:0002664', (227, 233)) ('patient', 'Species', '9606', (148, 155)) ('H3F3A', 'Gene', '3020', (81, 86)) ('tumor', 'Phenotype', 'HP:0002664', (227, 232)) 108485 26700204 The H3F3A mutation (c.103 G>T, p.G34W, COSM1732355) was identical to that reported recently as the main oncogenic driver of sporadic giant cell tumor of bone (GCTs). ('H3F3A', 'Gene', '3020', (4, 9)) ('c.103 G>T', 'Mutation', 'c.103G>T', (20, 29)) ('tumor', 'Disease', (144, 149)) ('c.103 G>T', 'Var', (20, 29)) ('GCT', 'Phenotype', 'HP:0011847', (159, 162)) ('p.G34W', 'Mutation', 'p.G34W', (31, 37)) ('H3F3A', 'Gene', (4, 9)) ('COSM1732355', 'Chemical', '-', (39, 50)) ('giant cell tumor of bone', 'Phenotype', 'HP:0011847', (133, 157)) ('tumor', 'Disease', 'MESH:D009369', (144, 149)) ('p.G34W', 'Var', (31, 37)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) 108488 26700204 The same glycine is also mutated in about 15% of pediatric gliomas, although distinct amino acid changes (either G34R or G34V) are seen in these tumors, suggesting a tight association between histological type and the mutated amino acid. ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('tumors', 'Disease', (145, 151)) ('G34R', 'SUBSTITUTION', 'None', (113, 117)) ('tumors', 'Phenotype', 'HP:0002664', (145, 151)) ('glycine', 'Chemical', 'MESH:D005998', (9, 16)) ('tumors', 'Disease', 'MESH:D009369', (145, 151)) ('G34V', 'SUBSTITUTION', 'None', (121, 125)) ('gliomas', 'Disease', (59, 66)) ('G34R', 'Var', (113, 117)) ('G34V', 'Var', (121, 125)) ('gliomas', 'Disease', 'MESH:D005910', (59, 66)) ('gliomas', 'Phenotype', 'HP:0009733', (59, 66)) 108489 26700204 To expand on this initial finding, we obtained samples from an unrelated 20-year old male patient who was previously reported with an aggressive retroperitoneal paraganglioma with liver metastasis and recurrent, metastatic GCTs, and found the same H3F3A mutation (Table 2, Suppl. ('paraganglioma', 'Phenotype', 'HP:0002668', (161, 174)) ('retroperitoneal paraganglioma', 'Disease', (145, 174)) ('GCT', 'Phenotype', 'HP:0011847', (223, 226)) ('H3F3A', 'Gene', '3020', (248, 253)) ('retroperitoneal paraganglioma', 'Phenotype', 'HP:0006729', (145, 174)) ('H3F3A', 'Gene', (248, 253)) ('liver metastasis', 'Disease', 'MESH:D009362', (180, 196)) ('mutation', 'Var', (254, 262)) ('patient', 'Species', '9606', (90, 97)) ('retroperitoneal paraganglioma', 'Disease', 'MESH:D012186', (145, 174)) ('liver metastasis', 'Disease', (180, 196)) 108490 26700204 In both patients, the G34W mutation was detected in all tumors and their metastasis, but was either absent (first case, C1), or detected at a low fraction (7.8%, second case, C2) in adjacent, histologically tumor-free tissue by ultra-deep targeted sequencing (Table 2). ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('metastasis', 'CPA', (73, 83)) ('G34W', 'Var', (22, 26)) ('tumor', 'Disease', (56, 61)) ('tumor', 'Disease', 'MESH:D009369', (207, 212)) ('detected', 'Reg', (40, 48)) ('G34W', 'Mutation', 'p.G34W', (22, 26)) ('tumors', 'Disease', (56, 62)) ('tumors', 'Disease', 'MESH:D009369', (56, 62)) ('tumors', 'Phenotype', 'HP:0002664', (56, 62)) ('tumor', 'Phenotype', 'HP:0002664', (207, 212)) ('tumor', 'Disease', (207, 212)) ('tumor', 'Disease', 'MESH:D009369', (56, 61)) ('patients', 'Species', '9606', (8, 16)) 108491 26700204 This differs from H3F3A mutations in bone and brain cancers, which have been detected exclusively at the somatic level. ('cancer', 'Phenotype', 'HP:0002664', (52, 58)) ('H3F3A', 'Gene', '3020', (18, 23)) ('brain cancers', 'Disease', 'MESH:D001932', (46, 59)) ('brain cancers', 'Disease', (46, 59)) ('H3F3A', 'Gene', (18, 23)) ('mutations', 'Var', (24, 33)) ('cancers', 'Phenotype', 'HP:0002664', (52, 59)) 108492 26700204 No other mutations of H3F3A, or its homolog H3F3B, were found in an independent set of 136 PPGLs not associated with GCT (Suppl. ('H3F3A', 'Gene', (22, 27)) ('H3F3B', 'Gene', (44, 49)) ('GCT', 'Phenotype', 'HP:0011847', (117, 120)) ('mutations', 'Var', (9, 18)) ('GCT', 'Disease', (117, 120)) ('associated', 'Reg', (101, 111)) ('H3F3A', 'Gene', '3020', (22, 27)) ('H3F3B', 'Gene', '3021', (44, 49)) 108493 26700204 We next performed computational modeling to infer the tridimensional structure of the G34W mutant and found that this variant is predicted to change the electrostatic potential (Suppl. ('G34W', 'Mutation', 'p.G34W', (86, 90)) ('G34W', 'Var', (86, 90)) ('change', 'Reg', (142, 148)) ('electrostatic potential', 'MPA', (153, 176)) 108495 26700204 These alterations are expected to promote a marked shift on the side chains of K27 and K36 (Fig.2b, Suppl. ('alterations', 'Var', (6, 17)) ('K36', 'Gene', (87, 90)) ('promote', 'Reg', (34, 41)) ('K27', 'Gene', '342574', (79, 82)) ('K36', 'Gene', '8689', (87, 90)) ('K27', 'Gene', (79, 82)) ('shift', 'Reg', (51, 56)) 108496 26700204 To determine whether the G34W mutation modulated the levels of methylation of these two histone residues, we examined tumor sections from the two H3F3A-mutant patients by immunohistochemistry (IHC). ('tumor', 'Disease', 'MESH:D009369', (118, 123)) ('methylation', 'MPA', (63, 74)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('levels', 'MPA', (53, 59)) ('H3F3A', 'Gene', '3020', (146, 151)) ('G34W', 'Var', (25, 29)) ('modulated', 'Reg', (39, 48)) ('tumor', 'Disease', (118, 123)) ('G34W', 'Mutation', 'p.G34W', (25, 29)) ('H3F3A', 'Gene', (146, 151)) ('patients', 'Species', '9606', (159, 167)) 108497 26700204 Both tri-methylated K36 (Fig.2c, Suppl.Fig.4a), and K27 (Suppl. ('K36', 'Gene', '8689', (20, 23)) ('tri-methylated', 'Var', (5, 19)) ('K27', 'Gene', '342574', (52, 55)) ('K36', 'Gene', (20, 23)) ('K27', 'Gene', (52, 55)) 108500 26700204 These observations suggest that the mutation does not cause overt changes in K36 or K27 methylation, although it is not possible to unequivocally determine in these experiments that the mutant allele binds to the methylation-specific antibodies with the same affinity as wild-type H3.3. ('K27', 'Gene', '342574', (84, 87)) ('K36', 'Gene', '8689', (77, 80)) ('K27', 'Gene', (84, 87)) ('K36', 'Gene', (77, 80)) ('binds', 'Interaction', (200, 205)) ('mutant', 'Var', (186, 192)) ('H3', 'Chemical', 'MESH:C012616', (281, 283)) ('mutation', 'Var', (36, 44)) 108501 26700204 Nonetheless, these results are similar to the findings in G34-mutant brain tumors. ('G34-mutant', 'Var', (58, 68)) ('brain tumors', 'Phenotype', 'HP:0030692', (69, 81)) ('tumors', 'Phenotype', 'HP:0002664', (75, 81)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('brain tumors', 'Disease', 'MESH:D001932', (69, 81)) ('brain tumors', 'Disease', (69, 81)) 108502 26700204 However, it should be noted that the amino acid changes in gliomas, G34V or G34R, are distinct from the specific variant detected in our samples, G34W, thus structural and functional differences may exist among these variants and lead to unique phenotypes. ('G34V', 'SUBSTITUTION', 'None', (68, 72)) ('G34V', 'Var', (68, 72)) ('G34R', 'SUBSTITUTION', 'None', (76, 80)) ('lead to', 'Reg', (230, 237)) ('G34R', 'Var', (76, 80)) ('G34W', 'Var', (146, 150)) ('gliomas', 'Disease', (59, 66)) ('gliomas', 'Phenotype', 'HP:0009733', (59, 66)) ('gliomas', 'Disease', 'MESH:D005910', (59, 66)) ('G34W', 'Mutation', 'p.G34W', (146, 150)) 108503 26700204 We also examined the global gene transcription profile of the three G34-mutant PPGLs from the first patient. ('G34-mutant', 'Var', (68, 78)) ('patient', 'Species', '9606', (100, 107)) ('PPGLs', 'Gene', (79, 84)) 108504 26700204 These mutants clustered with tumors carrying mutations in RET, NF1, or TMEM127 genes, known as cluster 2 PPGLs (Suppl. ('RET', 'Gene', '5979', (58, 61)) ('mutations', 'Var', (45, 54)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('TMEM127', 'Gene', (71, 78)) ('RET', 'Gene', (58, 61)) ('TMEM127', 'Gene', '55654', (71, 78)) ('tumors', 'Phenotype', 'HP:0002664', (29, 35)) ('tumors', 'Disease', 'MESH:D009369', (29, 35)) ('tumors', 'Disease', (29, 35)) ('NF1', 'Gene', (63, 66)) ('NF1', 'Gene', '4763', (63, 66)) 108505 26700204 Gene set-enrichment analysis (GSEA) and gene ontology assessment revealed significant association with ontologies related to neurogenesis and neural differentiation in the three G34W-mutant PPGLs (Suppl. ('PPGLs', 'Gene', (190, 195)) ('G34W-mutant', 'Var', (178, 189)) ('G34W', 'Mutation', 'p.G34W', (178, 182)) ('neural differentiation', 'CPA', (142, 164)) ('GSEA', 'Chemical', '-', (30, 34)) ('neurogenesis', 'CPA', (125, 137)) 108506 26700204 Table4), which mirrors the profile found in G34-mutant pediatric gliomas. ('gliomas', 'Disease', (65, 72)) ('G34-mutant', 'Var', (44, 54)) ('gliomas', 'Disease', 'MESH:D005910', (65, 72)) ('gliomas', 'Phenotype', 'HP:0009733', (65, 72)) 108507 26700204 We next investigated whether MYCN, which is overexpressed in G34-mutant gliomas, could also be deregulated in PPGLs with H3F3A mutation. ('deregulated', 'MPA', (95, 106)) ('H3F3A', 'Gene', '3020', (121, 126)) ('gliomas', 'Disease', (72, 79)) ('MYCN', 'Gene', (29, 33)) ('MYCN', 'Gene', '4613', (29, 33)) ('H3F3A', 'Gene', (121, 126)) ('gliomas', 'Disease', 'MESH:D005910', (72, 79)) ('gliomas', 'Phenotype', 'HP:0009733', (72, 79)) ('overexpressed', 'PosReg', (44, 57)) ('G34-mutant', 'Var', (61, 71)) 108508 26700204 Using western blot of primary tumors, we demonstrated that the MYCN protein is upregulated in mutant G34W-PPGLs when compared to tumors with intact H3F3A sequence (Fig.2e). ('tumors', 'Disease', (30, 36)) ('G34W-PPGLs', 'Var', (101, 111)) ('tumors', 'Disease', 'MESH:D009369', (30, 36)) ('tumors', 'Disease', (129, 135)) ('tumors', 'Disease', 'MESH:D009369', (129, 135)) ('tumors', 'Phenotype', 'HP:0002664', (30, 36)) ('tumors', 'Phenotype', 'HP:0002664', (129, 135)) ('H3F3A', 'Gene', '3020', (148, 153)) ('MYCN', 'Gene', (63, 67)) ('MYCN', 'Gene', '4613', (63, 67)) ('mutant G34W-PPGLs', 'Var', (94, 111)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('H3F3A', 'Gene', (148, 153)) ('upregulated', 'PosReg', (79, 90)) ('G34W', 'Mutation', 'p.G34W', (101, 105)) 108509 26700204 Future studies will be required to establish a causative connection between the G34W histone mutation and MYCN upregulation, but our current results suggest that MYCN may be overexpressed in paragangliomas with this mutation, and may contribute to the pathogenesis of PPGLs. ('G34W', 'Mutation', 'p.G34W', (80, 84)) ('overexpressed', 'PosReg', (174, 187)) ('MYCN', 'Gene', (106, 110)) ('MYCN', 'Gene', '4613', (106, 110)) ('paragangliomas', 'Disease', 'MESH:D010235', (191, 205)) ('PPGLs', 'Disease', (268, 273)) ('MYCN', 'Gene', (162, 166)) ('MYCN', 'Gene', '4613', (162, 166)) ('gliomas', 'Phenotype', 'HP:0009733', (198, 205)) ('contribute', 'Reg', (234, 244)) ('G34W', 'Var', (80, 84)) ('paragangliomas', 'Disease', (191, 205)) ('paraganglioma', 'Phenotype', 'HP:0002668', (191, 204)) ('paragangliomas', 'Phenotype', 'HP:0002668', (191, 205)) 108510 26700204 Besides the H3.3 mutation, variants were also identified in other genes involved in chromatin-mediated gene regulation. ('variants', 'Var', (27, 35)) ('H3', 'Chemical', 'MESH:C012616', (12, 14)) ('H3.3', 'Gene', (12, 16)) ('mutation', 'Var', (17, 25)) ('identified', 'Reg', (46, 56)) 108511 26700204 Among the methyltransferases, we identified a truncating mutation in SETD2 in an otherwise mutation-free, sporadic PPGL (Table 1, Suppl. ('SETD2', 'Gene', '29072', (69, 74)) ('SETD2', 'Gene', (69, 74)) ('truncating mutation', 'Var', (46, 65)) 108514 26700204 Activating and inactivating EZH2 mutations are involved in, respectively, lymphomas and myeloid malignancies. ('Activating', 'PosReg', (0, 10)) ('involved', 'Reg', (47, 55)) ('inactivating', 'Var', (15, 27)) ('EZH2', 'Gene', '2146', (28, 32)) ('mutations', 'Var', (33, 42)) ('EZH2', 'Gene', (28, 32)) ('lymphomas and myeloid malignancies', 'Disease', 'MESH:D008223', (74, 108)) ('lymphomas', 'Phenotype', 'HP:0002665', (74, 83)) 108515 26700204 In addition, KMT2B, a member of the K4 methyltransferase 2 (KMT2) family formerly known as MLL, was mutated in germline DNA of a patient with multiple paraganglioma recurrences since age 14 (Table 1). ('MLL', 'Gene', (91, 94)) ('mutated', 'Var', (100, 107)) ('KMT2B', 'Gene', '9757', (13, 18)) ('multiple paraganglioma', 'Disease', (142, 164)) ('paraganglioma', 'Phenotype', 'HP:0002668', (151, 164)) ('KMT2B', 'Gene', (13, 18)) ('MLL', 'Gene', '4297', (91, 94)) ('multiple paraganglioma', 'Disease', 'MESH:D010235', (142, 164)) ('patient', 'Species', '9606', (129, 136)) 108516 26700204 KMT2 mutations occur in various cancers and both germline and somatic variants of the KMT2D isoform were recently described in pheochromocytomas supporting the likely pathogenetic relevance of the KMT2B variant that we identified. ('cancers', 'Disease', 'MESH:D009369', (32, 39)) ('cancers', 'Phenotype', 'HP:0002664', (32, 39)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (127, 144)) ('cancers', 'Disease', (32, 39)) ('KMT2B', 'Gene', (197, 202)) ('pheochromocytomas', 'Disease', (127, 144)) ('KMT2', 'Gene', (0, 4)) ('described', 'Reg', (114, 123)) ('variants', 'Var', (70, 78)) ('KMT2D', 'Gene', '8085', (86, 91)) ('cancer', 'Phenotype', 'HP:0002664', (32, 38)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (127, 143)) ('KMT2B', 'Gene', '9757', (197, 202)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (127, 144)) ('KMT2D', 'Gene', (86, 91)) 108517 26700204 Two demethylases, JMJD1C and the KDM2B, members of the Jumonji C (JmjC)-domain containing demethylase family were mutated, respectively, in a benign, sporadic and in a malignant PPGL carrying a mutation in the PPGL susceptibility gene, SDHB (Table 1). ('mutation', 'Var', (194, 202)) ('demethylases', 'Enzyme', (4, 16)) ('mutated', 'Var', (114, 121)) ('JMJD1C', 'Gene', '221037', (18, 24)) ('SDHB', 'Gene', '6390', (236, 240)) ('JMJD1C', 'Gene', (18, 24)) ('KDM2B', 'Gene', (33, 38)) ('SDHB', 'Gene', (236, 240)) ('PPGL', 'Gene', (210, 214)) ('KDM2B', 'Gene', '84678', (33, 38)) 108518 26700204 Finally, ATRX, a histone 3.3 chaperone, was mutated in one sporadic tumor (Table 1). ('ATRX', 'Gene', '546', (9, 13)) ('mutated', 'Var', (44, 51)) ('sporadic tumor', 'Disease', (59, 73)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('ATRX', 'Gene', (9, 13)) ('sporadic tumor', 'Disease', 'MESH:D009369', (59, 73)) 108519 26700204 Somatic ATRX mutations, including the same variant detected in one of our samples, were recently reported in PPGLs and found to associate with malignant forms of these tumors. ('tumors', 'Phenotype', 'HP:0002664', (168, 174)) ('ATRX', 'Gene', '546', (8, 12)) ('mutations', 'Var', (13, 22)) ('tumors', 'Disease', (168, 174)) ('tumors', 'Disease', 'MESH:D009369', (168, 174)) ('reported', 'Reg', (97, 105)) ('associate with', 'Reg', (128, 142)) ('ATRX', 'Gene', (8, 12)) ('PPGLs', 'Disease', (109, 114)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) 108521 26700204 A germline mutation was detected in a residue within the tyrosine kinase domain of the MERTK gene (c.2273G>A, p.R758H, COSM1398803, Fig.3a) in a 32-year old patient diagnosed with pheochromocytoma, recurrent and metastatic paragangliomas and medullary thyroid carcinoma (MTC). ('paragangliomas', 'Disease', 'MESH:D010235', (223, 237)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (252, 269)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (242, 269)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (180, 196)) ('paragangliomas', 'Phenotype', 'HP:0002668', (223, 237)) ('paraganglioma', 'Phenotype', 'HP:0002668', (223, 236)) ('thyroid carcinoma', 'Disease', (252, 269)) ('gliomas', 'Phenotype', 'HP:0009733', (230, 237)) ('pheochromocytoma', 'Disease', (180, 196)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (180, 196)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (252, 269)) ('paragangliomas', 'Disease', (223, 237)) ('patient', 'Species', '9606', (157, 164)) ('p.R758H', 'Var', (110, 117)) ('c.2273G>A', 'Var', (99, 108)) ('carcinoma', 'Phenotype', 'HP:0030731', (260, 269)) ('p.R758H', 'Mutation', 'rs370526555', (110, 117)) ('MERTK', 'Gene', '10461', (87, 92)) ('MTC', 'Phenotype', 'HP:0002865', (271, 274)) ('MERTK', 'Gene', (87, 92)) ('c.2273G>A', 'Mutation', 'rs370526555', (99, 108)) 108524 26700204 We sequenced the MERTK kinase domain in a separate cohort of 136 PPGLs and identified a germline mutation targeting the same residue, R758C, in a 36-year old female with a sporadic pheochromocytoma (Fig.3a). ('sporadic pheochromocytoma', 'Disease', 'MESH:D010673', (172, 197)) ('R758C', 'Var', (134, 139)) ('sporadic pheochromocytoma', 'Disease', (172, 197)) ('MERTK', 'Gene', '10461', (17, 22)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (181, 197)) ('R758C', 'Mutation', 'rs200576584', (134, 139)) ('MERTK', 'Gene', (17, 22)) 108525 26700204 Ectopic expression of both 758R- and 758C-mutant MERTK in HEK293 cells led to sustained phosphorylation of downstream signaling effector ERK after stimulation with the MERTK ligand GAS6, compared to cells expressing an empty vector (EV), WT construct or a dominant negative MERTK mutant Y754F (Fig.3b). ('phosphorylation', 'MPA', (88, 103)) ('MERTK', 'Gene', (49, 54)) ('Y754F', 'Var', (287, 292)) ('Y754F', 'Mutation', 'p.Y754F', (287, 292)) ('GAS6', 'Gene', (181, 185)) ('MERTK', 'Gene', '10461', (274, 279)) ('HEK293', 'CellLine', 'CVCL:0045', (58, 64)) ('GAS6', 'Gene', '2621', (181, 185)) ('MERTK', 'Gene', (274, 279)) ('MERTK', 'Gene', '10461', (168, 173)) ('MERTK', 'Gene', (168, 173)) ('758C-mutant', 'Var', (37, 48)) ('758R-', 'Var', (27, 32)) ('MERTK', 'Gene', '10461', (49, 54)) 108526 26700204 Further, somatic MERTK mutations were identified in two pheochromocytomas of the TCGA dataset [preliminary release at ]. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (56, 73)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (56, 72)) ('pheochromocytomas', 'Disease', (56, 73)) ('mutations', 'Var', (23, 32)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (56, 73)) ('MERTK', 'Gene', '10461', (17, 22)) ('MERTK', 'Gene', (17, 22)) 108527 26700204 These results are consistent with MERTK mutations playing a role in PPGL pathogenesis. ('MERTK', 'Gene', (34, 39)) ('PPGL', 'Disease', (68, 72)) ('MERTK', 'Gene', '10461', (34, 39)) ('mutations', 'Var', (40, 49)) 108528 26700204 We also identified a novel germline mutation of the MET kinase receptor in the exome of the index case of a three-generation family with pheochromocytomas but without a known driver mutation. ('pheochromocytomas', 'Disease', (137, 154)) ('MET kinase', 'Enzyme', (52, 62)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (137, 154)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (137, 153)) ('germline mutation', 'Var', (27, 44)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (137, 154)) 108532 26700204 Additional MET variants were identified within the semaphorin domain, a hotspot region for cancer mutations, in the exome of three sporadic PPGLs (Table 1). ('variants', 'Var', (15, 23)) ('cancer', 'Disease', (91, 97)) ('cancer', 'Disease', 'MESH:D009369', (91, 97)) ('cancer', 'Phenotype', 'HP:0002664', (91, 97)) 108534 26700204 A somatic mutation in the main hotspot residue of the FGFR1 receptor (c.1638C>A; p.N546K COSM19176/302229), known to constitutively activate the receptor in glioblastomas and other cancers, was detected in one patient with a sporadic pheochromocytoma without an identifiable PPGL susceptibility gene mutation (Table 1). ('sporadic pheochromocytoma', 'Disease', (225, 250)) ('FGFR1', 'Gene', '2260', (54, 59)) ('glioblastomas', 'Disease', (157, 170)) ('activate', 'PosReg', (132, 140)) ('cancers', 'Disease', 'MESH:D009369', (181, 188)) ('c.1638C>A', 'Mutation', 'rs779707422', (70, 79)) ('glioblastomas', 'Disease', 'MESH:D005909', (157, 170)) ('detected', 'Reg', (194, 202)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (234, 250)) ('FGFR1', 'Gene', (54, 59)) ('cancers', 'Phenotype', 'HP:0002664', (181, 188)) ('sporadic pheochromocytoma', 'Disease', 'MESH:D010673', (225, 250)) ('cancers', 'Disease', (181, 188)) ('p.N546K', 'Mutation', 'rs779707422', (81, 88)) ('glioblastomas', 'Phenotype', 'HP:0012174', (157, 170)) ('cancer', 'Phenotype', 'HP:0002664', (181, 187)) ('c.1638C>A; p.N546K', 'Var', (70, 88)) ('patient', 'Species', '9606', (210, 217)) ('p.N546K', 'Var', (81, 88)) 108535 26700204 No additional N546K mutations were found in our validation group of 136 samples, but this variant was detected in a sample of the PPGL TCGA dataset, suggesting that FGFR1 mutation is a rare but recurrent event in PPGLs. ('N546K', 'Mutation', 'rs779707422', (14, 19)) ('mutation', 'Var', (171, 179)) ('N546K', 'Var', (14, 19)) ('FGFR1', 'Gene', (165, 170)) ('FGFR1', 'Gene', '2260', (165, 170)) 108536 26700204 Only three samples in our series carried mutations in both chromatin-related and kinase genes (3/23 separate tumors from 20 individuals, Fig. ('mutations', 'Var', (41, 50)) ('tumors', 'Disease', 'MESH:D009369', (109, 115)) ('tumors', 'Disease', (109, 115)) ('chromatin-related', 'Gene', (59, 76)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('tumors', 'Phenotype', 'HP:0002664', (109, 115)) 108537 26700204 These variants tended to occur predominantly in tumors with no mutation of an established PPGL gene (13/23, log odds ratio -1.28; p=0.06, Table1), suggesting that they might play a dominant role in tumor development. ('PPGL', 'Gene', (90, 94)) ('variants', 'Var', (6, 14)) ('tumor', 'Disease', (48, 53)) ('tumors', 'Disease', (48, 54)) ('tumor', 'Disease', 'MESH:D009369', (198, 203)) ('tumors', 'Disease', 'MESH:D009369', (48, 54)) ('tumors', 'Phenotype', 'HP:0002664', (48, 54)) ('tumor', 'Phenotype', 'HP:0002664', (198, 203)) ('play', 'Reg', (174, 178)) ('tumor', 'Disease', (198, 203)) ('tumor', 'Disease', 'MESH:D009369', (48, 53)) ('tumor', 'Phenotype', 'HP:0002664', (48, 53)) 108538 26700204 Overall, mutations in genes related to chromatin remodeling or kinase receptors were found in 20 of the 41 patients, and when cases with known PPGL gene mutations are combined, driver mutations could be assigned to 68% of the samples in this series. ('mutations', 'Var', (9, 18)) ('patients', 'Species', '9606', (107, 115)) ('found', 'Reg', (85, 90)) ('PPGL', 'Gene', (143, 147)) 108539 26700204 Our data point to mutations in chromatin remodeling genes as a recurrent feature of PPGLs, implying that epigenetic modifications occur in these tumors. ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('tumors', 'Disease', (145, 151)) ('tumors', 'Phenotype', 'HP:0002664', (145, 151)) ('PPGLs', 'Disease', (84, 89)) ('tumors', 'Disease', 'MESH:D009369', (145, 151)) ('mutations', 'Var', (18, 27)) 108540 26700204 Indeed, epigenetic changes associated with enhanced DNA and histone methylation have been linked to loss-of-function mutants of the well-known PPGL susceptibility genes SDH and FH, engendered as a result of metabolic imbalances that decrease the activity of histone demethylases. ('histone methylation', 'MPA', (60, 79)) ('enhanced', 'PosReg', (43, 51)) ('mutants', 'Var', (117, 124)) ('SDH', 'Gene', '6390', (169, 172)) ('loss-of-function', 'NegReg', (100, 116)) ('histone demethylases', 'Enzyme', (258, 278)) ('imbalances', 'Phenotype', 'HP:0002172', (217, 227)) ('PPGL', 'Gene', (143, 147)) ('activity', 'MPA', (246, 254)) ('SDH', 'Gene', (169, 172)) ('DNA', 'MPA', (52, 55)) ('epigenetic changes', 'MPA', (8, 26)) 108541 26700204 Furthermore, the postzygotic H3.3 mutation pattern found in our cases, not previously reported in other H3.3-mutated tumors, may now instigate studies to revisit the cell of origin of sympathetic lineage and bone tumors, not hitherto thought to share common precursors, and may also have implications for measuring transmission risk of the mutation in affected patients. ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('H3', 'Chemical', 'MESH:C012616', (29, 31)) ('patients', 'Species', '9606', (361, 369)) ('tumors', 'Disease', (213, 219)) ('tumors', 'Disease', 'MESH:D009369', (213, 219)) ('bone tumors', 'Phenotype', 'HP:0010622', (208, 219)) ('tumors', 'Phenotype', 'HP:0002664', (213, 219)) ('tumors', 'Phenotype', 'HP:0002664', (117, 123)) ('H3.3', 'Gene', (29, 33)) ('mutation', 'Var', (34, 42)) ('tumors', 'Disease', (117, 123)) ('tumors', 'Disease', 'MESH:D009369', (117, 123)) ('implications', 'Reg', (288, 300)) ('bone tumors', 'Disease', (208, 219)) ('tumor', 'Phenotype', 'HP:0002664', (213, 218)) ('sympathetic lineage', 'CPA', (184, 203)) ('H3', 'Chemical', 'MESH:C012616', (104, 106)) ('bone tumors', 'Disease', 'MESH:D001859', (208, 219)) 108542 26700204 More broadly, identification of specific consequences of each individual and combinatorial variant on chromatin deposition throughout the PPGL genome may provide key insights into gene regulation and tumorigenesis. ('tumor', 'Disease', 'MESH:D009369', (200, 205)) ('variant', 'Var', (91, 98)) ('tumor', 'Phenotype', 'HP:0002664', (200, 205)) ('chromatin deposition', 'MPA', (102, 122)) ('tumor', 'Disease', (200, 205)) ('PPGL', 'Gene', (138, 142)) 108544 26700204 The mutated MERTK R758, found in two patients of our study, is homologous to RET R912, previously detected in FMTC. ('RET', 'Gene', (77, 80)) ('mutated', 'Var', (4, 11)) ('patients', 'Species', '9606', (37, 45)) ('MERTK', 'Gene', '10461', (12, 17)) ('MERTK', 'Gene', (12, 17)) ('MTC', 'Phenotype', 'HP:0002865', (111, 114)) ('RET', 'Gene', '5979', (77, 80)) 108545 26700204 R758 is adjacent to a conserved KWIAIES sequence within the kinase domain, known as the TAM domain, which is highly homologous to RET and encompasses a hotspot residue for mutation of this gene in human cancers (M918T, COSM965). ('RET', 'Gene', (130, 133)) ('cancers', 'Phenotype', 'HP:0002664', (203, 210)) ('M918T', 'Mutation', 'rs74799832', (212, 217)) ('R758', 'Var', (0, 4)) ('cancer', 'Phenotype', 'HP:0002664', (203, 209)) ('human', 'Species', '9606', (197, 202)) ('cancers', 'Disease', 'MESH:D009369', (203, 210)) ('RET', 'Gene', '5979', (130, 133)) ('M918T', 'Var', (212, 217)) ('cancers', 'Disease', (203, 210)) 108548 26700204 Somatic MET mutations occur in multiple cancer types, but germline MET mutations have only been previously reported in papillary renal cancers. ('papillary renal cancers', 'Disease', (119, 142)) ('cancer', 'Disease', (135, 141)) ('cancers', 'Phenotype', 'HP:0002664', (135, 142)) ('cancer', 'Disease', 'MESH:D009369', (40, 46)) ('mutations', 'Var', (12, 21)) ('cancer', 'Disease', (40, 46)) ('papillary renal cancers', 'Disease', 'MESH:D007681', (119, 142)) ('cancer', 'Phenotype', 'HP:0002664', (135, 141)) ('MET mutations', 'Var', (8, 21)) ('cancer', 'Phenotype', 'HP:0002664', (40, 46)) ('renal cancer', 'Phenotype', 'HP:0009726', (129, 141)) ('cancer', 'Disease', 'MESH:D009369', (135, 141)) 108549 26700204 Although the patients with MET mutations in our series had no history of renal tumors, there is increasing recognition of an overlap between genes that cause susceptibility to pheochromocytoma and renal cancers. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (176, 192)) ('tumor', 'Phenotype', 'HP:0002664', (79, 84)) ('mutations', 'Var', (31, 40)) ('renal tumors', 'Disease', (73, 85)) ('patients', 'Species', '9606', (13, 21)) ('renal tumors', 'Phenotype', 'HP:0009726', (73, 85)) ('cancers', 'Phenotype', 'HP:0002664', (203, 210)) ('tumors', 'Phenotype', 'HP:0002664', (79, 85)) ('renal tumors', 'Disease', 'MESH:D007674', (73, 85)) ('renal cancer', 'Phenotype', 'HP:0009726', (197, 209)) ('pheochromocytoma and renal cancers', 'Disease', 'MESH:D007680', (176, 210)) ('cancer', 'Phenotype', 'HP:0002664', (203, 209)) 108550 26700204 The identification of variants in either chromatin or kinase genes in patients without a known germline PPGL mutation, detection of additional mutations of these new candidate genes in our validation cohort and also in other, independent series offer support for their role in PPGL pathogenesis. ('patients', 'Species', '9606', (70, 78)) ('chromatin', 'Gene', (41, 50)) ('variants', 'Var', (22, 30)) ('PPGL', 'Gene', (104, 108)) ('mutations', 'Var', (143, 152)) 108551 26700204 Importantly, although these variants were not specifically enhanced in malignant tumors, the availability of clinical grade tyrosine kinase inhibitors, including those targeting MET and FGFR1, and agents directed at chromatin modifications may expand the number of experimental therapeutic options to malignant or inoperable PPGLs. ('FGFR1', 'Gene', '2260', (186, 191)) ('malignant tumors', 'Disease', (71, 87)) ('MET', 'Gene', (178, 181)) ('variants', 'Var', (28, 36)) ('malignant tumors', 'Disease', 'MESH:D018198', (71, 87)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('tumors', 'Phenotype', 'HP:0002664', (81, 87)) ('FGFR1', 'Gene', (186, 191)) 108554 26700204 Pheochromocytomas and paragangliomas are genetically heterogeneous neuroendocrine tumors caused by inherited mutations in 40% of the cases. ('Pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (0, 36)) ('tumors', 'Phenotype', 'HP:0002664', (82, 88)) ('neuroendocrine tumors', 'Disease', (67, 88)) ('gliomas', 'Phenotype', 'HP:0009733', (29, 36)) ('caused by', 'Reg', (89, 98)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('mutations', 'Var', (109, 118)) ('paraganglioma', 'Phenotype', 'HP:0002668', (22, 35)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (67, 88)) ('paragangliomas', 'Phenotype', 'HP:0002668', (22, 36)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (67, 88)) 108555 26700204 Using exome or transcriptome sequencing we identified novel recurrent germline, mosaic or somatic mutations in genes encoding chromatin regulators, including histone and histone modifiers, as well as kinase receptors, among which were MERTK, MET and FGFR1. ('FGFR1', 'Gene', (250, 255)) ('MERTK', 'Gene', '10461', (235, 240)) ('FGFR1', 'Gene', '2260', (250, 255)) ('MERTK', 'Gene', (235, 240)) ('mutations', 'Var', (98, 107)) ('MET', 'Gene', (242, 245)) ('mosaic', 'Var', (80, 86)) 108556 26700204 Some of these mutations, in histone 3.3, MERTK and MET, were associated with co-occurring tumors or familial disease, suggesting that they belong to previously unappreciated susceptibility syndromes. ('MERTK', 'Gene', '10461', (41, 46)) ('MERTK', 'Gene', (41, 46)) ('familial disease', 'Disease', (100, 116)) ('familial disease', 'Disease', 'MESH:D030342', (100, 116)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('MET', 'Gene', (51, 54)) ('tumors', 'Disease', (90, 96)) ('tumors', 'Disease', 'MESH:D009369', (90, 96)) ('tumors', 'Phenotype', 'HP:0002664', (90, 96)) ('associated', 'Reg', (61, 71)) ('mutations', 'Var', (14, 23)) 108557 26700204 These new variants increase the proportion of pheochromocytomas and paragangliomas with a known genetic basis and broaden the spectrum of genes targeted in these tumors. ('tumor', 'Phenotype', 'HP:0002664', (162, 167)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (46, 63)) ('variants', 'Var', (10, 18)) ('paragangliomas', 'Phenotype', 'HP:0002668', (68, 82)) ('paraganglioma', 'Phenotype', 'HP:0002668', (68, 81)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (46, 62)) ('increase', 'PosReg', (19, 27)) ('gliomas', 'Phenotype', 'HP:0009733', (75, 82)) ('tumors', 'Disease', 'MESH:D009369', (162, 168)) ('tumors', 'Disease', (162, 168)) ('tumors', 'Phenotype', 'HP:0002664', (162, 168)) ('pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (46, 82)) 108559 26843961 Somatic RET mutation in a patient with pigmented adrenal pheochromocytoma Pheochromocytomas (PCC) and paraganglioma (PGL) are rare neuroendocrine tumors arising from chromaffin cells of the neural crest. ('patient', 'Species', '9606', (26, 33)) ('RET', 'Gene', '5979', (8, 11)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (49, 73)) ('pigmented adrenal pheochromocytoma', 'Disease', (39, 73)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (131, 152)) ('pigmented adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (39, 73)) ('paraganglioma', 'Phenotype', 'HP:0002668', (102, 115)) ('Pheochromocytomas', 'Disease', (74, 91)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (131, 151)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (131, 152)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (74, 90)) ('PGL', 'Phenotype', 'HP:0002668', (117, 120)) ('RET', 'Gene', (8, 11)) ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('tumors', 'Phenotype', 'HP:0002664', (146, 152)) ('neuroendocrine tumors', 'Disease', (131, 152)) ('PCC', 'Phenotype', 'HP:0002666', (93, 96)) ('paraganglioma', 'Disease', (102, 115)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (57, 73)) ('paraganglioma', 'Disease', 'MESH:D010235', (102, 115)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (74, 91)) ('mutation', 'Var', (12, 20)) 108560 26843961 Mutations in the RET-proto-oncogene are associated with sporadic pheochromocytoma, familial or sporadic medullary thyroid carcinoma (MTC) and multiple endocrine neoplasia type 2. ('thyroid carcinoma', 'Disease', 'MESH:D013964', (114, 131)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (65, 81)) ('multiple endocrine neoplasia type 2', 'Disease', (142, 177)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (114, 131)) ('neoplasia', 'Phenotype', 'HP:0002664', (161, 170)) ('sporadic pheochromocytoma', 'Disease', 'MESH:D010673', (56, 81)) ('MTC', 'Phenotype', 'HP:0002865', (133, 136)) ('thyroid carcinoma', 'Disease', (114, 131)) ('RET', 'Gene', (17, 20)) ('Mutations', 'Var', (0, 9)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (142, 177)) ('carcinoma', 'Phenotype', 'HP:0030731', (122, 131)) ('RET', 'Gene', '5979', (17, 20)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (104, 131)) ('associated', 'Reg', (40, 50)) ('sporadic pheochromocytoma', 'Disease', (56, 81)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (151, 170)) 108566 26843961 In our case a somatic RET mutation in exon 16 (RET c.2753T>C, p.Met918Thy) was detected by targeted next generation sequencing. ('RET', 'Gene', (22, 25)) ('c.2753T>C', 'Mutation', 'rs74799832', (51, 60)) ('RET', 'Gene', (47, 50)) ('RET', 'Gene', '5979', (47, 50)) ('p.Met918T', 'SUBSTITUTION', 'None', (62, 71)) ('RET', 'Gene', '5979', (22, 25)) ('p.Met918T', 'Var', (62, 71)) 108570 26843961 RET mutation are seen in catecholamine and non-catecholamine producing tumors of the same cellular origin. ('RET', 'Gene', '5979', (0, 3)) ('catecholamine', 'Chemical', 'MESH:D002395', (25, 38)) ('mutation', 'Var', (4, 12)) ('RET', 'Gene', (0, 3)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('tumors', 'Disease', (71, 77)) ('catecholamine', 'Chemical', 'MESH:D002395', (47, 60)) ('tumors', 'Disease', 'MESH:D009369', (71, 77)) 108581 26843961 Targeted next generation sequencing including EPAS1, FH, HRAS, KIF1B, MAX, MDH2, MEN1, NF1, RET, SDHA, SDHAF1, SDHAF2, SDHB, SDHC, SDHD, TMEM127 and VHL was done on the tumor DNA, which revealed a somatic RET mutation in exon 16 (RET c.2753T>C, p.Met918Thy), further validated by Sanger sequencing. ('MDH2', 'Gene', '4191', (75, 79)) ('NF1', 'Gene', '4763', (87, 90)) ('SDHD', 'Gene', (131, 135)) ('RET', 'Gene', (92, 95)) ('SDHC', 'Gene', (125, 129)) ('EPAS1', 'Gene', '2034', (46, 51)) ('SDHA', 'Gene', (97, 101)) ('SDHB', 'Gene', (119, 123)) ('p.Met918T', 'SUBSTITUTION', 'None', (245, 254)) ('TMEM127', 'Gene', '55654', (137, 144)) ('MEN1', 'Gene', (81, 85)) ('SDHAF1', 'Gene', (103, 109)) ('FH', 'Disease', 'MESH:D006938', (53, 55)) ('c.2753T>C', 'Mutation', 'rs74799832', (234, 243)) ('NF1', 'Gene', (87, 90)) ('RET', 'Gene', '5979', (230, 233)) ('SDHA', 'Gene', '6389', (97, 101)) ('VHL', 'Gene', '7428', (149, 152)) ('p.Met918T', 'Var', (245, 254)) ('KIF1B', 'Gene', (63, 68)) ('SDHAF2', 'Gene', (111, 117)) ('SDHAF2', 'Gene', '54949', (111, 117)) ('SDHA', 'Gene', (103, 107)) ('RET', 'Gene', '5979', (205, 208)) ('SDHA', 'Gene', (111, 115)) ('tumor', 'Disease', (169, 174)) ('SDHA', 'Gene', '6389', (103, 107)) ('SDHA', 'Gene', '6389', (111, 115)) ('MDH2', 'Gene', (75, 79)) ('tumor', 'Disease', 'MESH:D009369', (169, 174)) ('RET', 'Gene', (230, 233)) ('HRAS', 'Gene', '3265', (57, 61)) ('SDHC', 'Gene', '6391', (125, 129)) ('MEN1', 'Gene', '4221', (81, 85)) ('EPAS1', 'Gene', (46, 51)) ('HRAS', 'Gene', (57, 61)) ('RET', 'Gene', '5979', (92, 95)) ('SDHD', 'Gene', '6392', (131, 135)) ('RET', 'Gene', (205, 208)) ('SDHB', 'Gene', '6390', (119, 123)) ('KIF1B', 'Gene', '23095', (63, 68)) ('tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('SDHAF1', 'Gene', '644096', (103, 109)) ('TMEM127', 'Gene', (137, 144)) ('VHL', 'Gene', (149, 152)) 108602 26843961 The somatic RET mutation found in our case is of interest as also non-catecholamine producing but MEN2 associated tumors such as MTC have been reported to occur as hyperpigmented. ('mutation', 'Var', (16, 24)) ('MTC', 'Disease', (129, 132)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('catecholamine', 'Chemical', 'MESH:D002395', (70, 83)) ('RET', 'Gene', '5979', (12, 15)) ('tumors', 'Disease', 'MESH:D009369', (114, 120)) ('tumors', 'Disease', (114, 120)) ('tumors', 'Phenotype', 'HP:0002664', (114, 120)) ('MTC', 'Phenotype', 'HP:0002865', (129, 132)) ('RET', 'Gene', (12, 15)) 108603 26843961 The rareness of this association clearly indicates that RET mutations are not sufficient to cause a hyperpigmentation phenotype. ('cause', 'Reg', (92, 97)) ('RET', 'Gene', '5979', (56, 59)) ('hyperpigmentation', 'Disease', (100, 117)) ('mutations', 'Var', (60, 69)) ('hyperpigmentation', 'Disease', 'MESH:D017495', (100, 117)) ('RET', 'Gene', (56, 59)) 108635 25984127 The anti-hypertensive therapy was further escalated; with phenoxybenzamine 180 mg daily, doxazosin 32 mg daily, diltiazem 360 mg daily and metoprolol 95 mg daily and his target weight increased to 98 kg adequate BP control, 150/90 mmHg was achieved, without postural hypotension. ('diltiazem', 'Chemical', 'MESH:D004110', (112, 121)) ('metoprolol', 'Chemical', 'MESH:D008790', (139, 149)) ('postural hypotension', 'Phenotype', 'HP:0001278', (258, 278)) ('hypotension', 'Disease', 'MESH:D007022', (267, 278)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (58, 74)) ('hypertensive', 'Disease', 'MESH:D006973', (9, 21)) ('hypotension', 'Disease', (267, 278)) ('hypertensive', 'Disease', (9, 21)) ('doxazosin', 'Chemical', 'MESH:D017292', (89, 98)) ('hypotension', 'Phenotype', 'HP:0002615', (267, 278)) ('phenoxybenzamine', 'Var', (58, 74)) 108641 25984127 The patient underwent mutation analysis that showed a pathogenic autosomal dominant von-Hippel-Lindau (VHL) germline splice site mutation, c.340+5G G-C (intronic) in IVS1. ('von-Hippel-Lindau', 'Gene', (84, 101)) ('VHL', 'Gene', '7428', (103, 106)) ('von-Hippel-Lindau', 'Gene', '7428', (84, 101)) ('c.340+5G G-C', 'Var', (139, 153)) ('patient', 'Species', '9606', (4, 11)) ('pathogenic', 'Reg', (54, 64)) ('c.340+5G G-C', 'Mutation', 'c.340+5GG>C', (139, 153)) ('IVS1', 'Gene', (168, 172)) ('VHL', 'Gene', (103, 106)) 108666 25984127 Up to 30% of patients with an apparently sporadic secretory pheochromocytoma or paraganglioma may have an inherited disorder due to a germline mutation in one of several susceptibility genes. ('paraganglioma', 'Disease', 'MESH:D010235', (80, 93)) ('patients', 'Species', '9606', (13, 21)) ('pheochromocytoma', 'Disease', (60, 76)) ('due to', 'Reg', (125, 131)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (60, 76)) ('germline mutation', 'Var', (134, 151)) ('inherited disorder', 'Disease', 'MESH:D030342', (106, 124)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (60, 76)) ('paraganglioma', 'Phenotype', 'HP:0002668', (80, 93)) ('inherited disorder', 'Disease', (106, 124)) ('paraganglioma', 'Disease', (80, 93)) 108667 25984127 Mutations in the VHL tumour suppressor gene, the RET proto-oncogene and the succinate dehydrogenase subunit genes should be sought. ('RET', 'Gene', '5979', (49, 52)) ('VHL tumour', 'Disease', (17, 27)) ('VHL tumour', 'Disease', 'MESH:D006623', (17, 27)) ('tumour', 'Phenotype', 'HP:0002664', (21, 27)) ('Mutations', 'Var', (0, 9)) ('RET', 'Gene', (49, 52)) 108672 25984127 Although the finding of a pathologic missense mutation in the VHL gene combined with absence of other VHL manifestation suggests the presence of a phaeochromocytoma phenotype, the genotype-phenotype correlation cannot be relied upon and both father and daughter will require continued surveillance for haemangioblastomas, retinal lesions and renal cell carcinoma. ('carcinoma', 'Phenotype', 'HP:0030731', (353, 362)) ('haemangioblastomas', 'Disease', (302, 320)) ('retinal lesions', 'Disease', (322, 337)) ('man', 'Species', '9606', (305, 308)) ('phaeochromocytoma', 'Disease', (147, 164)) ('man', 'Species', '9606', (106, 109)) ('phaeochromocytoma', 'Disease', 'MESH:D010673', (147, 164)) ('retinal lesions', 'Disease', 'MESH:D012164', (322, 337)) ('VHL', 'Gene', (102, 105)) ('renal cell carcinoma', 'Disease', (342, 362)) ('VHL', 'Gene', (62, 65)) ('missense mutation', 'Var', (37, 54)) ('haemangioblastomas', 'Disease', 'MESH:D018325', (302, 320)) ('VHL', 'Gene', '7428', (102, 105)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (342, 362)) ('VHL', 'Gene', '7428', (62, 65)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (342, 362)) 108678 25984127 (3)The combination of hypersecretion and reduced renal clearance may result in very high levels of catecholamine in patients on dialysis. ('reduced', 'NegReg', (41, 48)) ('patients', 'Species', '9606', (116, 124)) ('hypersecretion', 'Var', (22, 36)) ('high levels of catecholamine', 'Phenotype', 'HP:0003334', (84, 112)) ('reduced renal clearance', 'Phenotype', 'HP:0012213', (41, 64)) ('levels of catecholamine', 'MPA', (89, 112)) ('result', 'Reg', (69, 75)) ('renal clearance', 'MPA', (49, 64)) ('catecholamine', 'Chemical', 'MESH:D002395', (99, 112)) 108679 25984127 (4)Up to 30% of patients with an apparently sporadic phaeochromocytoma or paraganglioma may have a germ line mutation in a susceptibility gene and require screening. ('paraganglioma', 'Disease', (74, 87)) ('patients', 'Species', '9606', (16, 24)) ('paraganglioma', 'Disease', 'MESH:D010235', (74, 87)) ('sporadic phaeochromocytoma', 'Disease', 'MESH:D004421', (44, 70)) ('sporadic phaeochromocytoma', 'Disease', (44, 70)) ('paraganglioma', 'Phenotype', 'HP:0002668', (74, 87)) ('mutation', 'Var', (109, 117)) 108680 25984127 If pathogenic mutations are found, assessment in family members should be performed to identify at risk patients who can then undergo early screening and treatment. ('pathogenic', 'Reg', (3, 13)) ('mutations', 'Var', (14, 23)) ('patients', 'Species', '9606', (104, 112)) 108683 25140230 Following key words were used: "extra-adrenal phaeochromocytoma", "paraganglioma", "diagnosis", "therapy", "surgery", "genetic analysis", and "SDH mutation". ('extra-adrenal phaeochromocytoma", "paraganglioma"', 'Disease', 'MESH:D010236', (32, 81)) ('mutation', 'Var', (147, 155)) ('adrenal phaeochromocytoma', 'Phenotype', 'HP:0006748', (38, 63)) ('SDH', 'Gene', (143, 146)) ('extra-adrenal phaeochromocytoma', 'Phenotype', 'HP:0006737', (32, 63)) ('SDH', 'Gene', '6390', (143, 146)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) 108691 25140230 In patients with proven SDHB germline mutations, higher malignancy rate, multiple PCCs and recurrences are likely. ('malignancy', 'Disease', 'MESH:D009369', (56, 66)) ('malignancy', 'Disease', (56, 66)) ('patients', 'Species', '9606', (3, 11)) ('SDHB', 'Gene', '6390', (24, 28)) ('SDHB', 'Gene', (24, 28)) ('higher', 'PosReg', (49, 55)) ('germline mutations', 'Var', (29, 47)) 108699 25140230 Almost one-fourth of patients with apparently sporadic phaeochromocytoma may be carriers of mutations. ('patients', 'Species', '9606', (21, 29)) ('sporadic phaeochromocytoma', 'Disease', (46, 72)) ('sporadic phaeochromocytoma', 'Disease', 'MESH:D004421', (46, 72)) ('mutations', 'Var', (92, 101)) 108706 25140230 About 25% of patients have an inherited condition associated with different mutations and other tumor entities (VHL, RET, NF1 and SDH genes). ('mutations', 'Var', (76, 85)) ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('SDH', 'Gene', (130, 133)) ('RET', 'Gene', '5979', (117, 120)) ('patients', 'Species', '9606', (13, 21)) ('tumor', 'Disease', (96, 101)) ('VHL', 'Gene', (112, 115)) ('VHL', 'Gene', '7428', (112, 115)) ('RET', 'Gene', (117, 120)) ('NF1', 'Gene', (122, 125)) ('tumor', 'Disease', 'MESH:D009369', (96, 101)) ('NF1', 'Gene', '4763', (122, 125)) ('SDH', 'Gene', '6390', (130, 133)) 108722 25140230 showed that 18F-DOPA PET/CT had a higher spatial resolution and a more selective, clearer radiotracer accumulation in PCCs than did 123I-MIBG SPECT. ('18F-DOPA', 'Chemical', 'MESH:C043437', (12, 20)) ('radiotracer accumulation', 'MPA', (90, 114)) ('18F-DOPA', 'Var', (12, 20)) ('123I-MIBG', 'Chemical', '-', (132, 141)) 108753 25140230 Patients with hereditary disease mutations present higher rates of malignant disease, depending on the location of the mutation. ('malignant disease', 'Disease', (67, 84)) ('hereditary disease', 'Disease', (14, 32)) ('hereditary disease', 'Disease', 'MESH:D030342', (14, 32)) ('mutations', 'Var', (33, 42)) ('Patients', 'Species', '9606', (0, 8)) ('malignant disease', 'Disease', 'MESH:D009369', (67, 84)) 108756 25140230 The most frequent germline mutations, responsible for familial PCCs, are: the von Hippel-Lindau gene (VHL), which causes von Hippel-Lindau syndrome; the RET gene, leading to multiple endocrine neoplasia type 2; the neurofibromatosis type 1 gene (NF1), which is associated with von Recklinghausen's disease; and the genes encoding the B, C and D subunits of mitochondrial succinate dehydrogenase (SDHB, SDHC and SDHD), which are associated with familial paragangliomas and phaeochromocytomas (Table 1). ('mutations', 'Var', (27, 36)) ('SDHB', 'Gene', '6390', (396, 400)) ('NF1', 'Gene', (246, 249)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (78, 95)) ('paragangliomas', 'Phenotype', 'HP:0002668', (453, 467)) ('paraganglioma', 'Phenotype', 'HP:0002668', (453, 466)) ('VHL', 'Gene', (102, 105)) ('RET', 'Gene', '5979', (153, 156)) ('associated', 'Reg', (428, 438)) ('neurofibromatosis type 1', 'Gene', '4763', (215, 239)) ('SDHB', 'Gene', (396, 400)) ('SDHC', 'Gene', (402, 406)) ('associated', 'Reg', (261, 271)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (174, 209)) ('SDHD', 'Gene', '6392', (411, 415)) ("von Recklinghausen's disease", 'Disease', 'MESH:C537392', (277, 305)) ('familial paragangliomas and phaeochromocytomas', 'Disease', 'MESH:D010235', (444, 490)) ('neoplasia', 'Phenotype', 'HP:0002664', (193, 202)) ('VHL', 'Gene', '7428', (102, 105)) ('RET', 'Gene', (153, 156)) ("von Recklinghausen's disease", 'Disease', (277, 305)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (183, 202)) ('von Hippel-Lindau', 'Disease', (78, 95)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (121, 138)) ('SDHD', 'Gene', (411, 415)) ('neurofibromatosis type 1', 'Gene', (215, 239)) ('von Hippel-Lindau syndrome', 'Disease', (121, 147)) ('NF1', 'Gene', '4763', (246, 249)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (121, 147)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (215, 232)) ('SDHC', 'Gene', '6391', (402, 406)) ('multiple endocrine neoplasia type 2', 'Disease', (174, 209)) 108765 25140230 Mutations in the four SDH complex subunits and SDHAF2 have been detected in PCC, but frequency, site, and malignancy varies. ('PCC', 'Disease', (76, 79)) ('SDH', 'Gene', (47, 50)) ('malignancy', 'Disease', (106, 116)) ('SDH', 'Gene', '6390', (22, 25)) ('detected', 'Reg', (64, 72)) ('Mutations', 'Var', (0, 9)) ('SDH', 'Gene', '6390', (47, 50)) ('SDHAF2', 'Gene', '54949', (47, 53)) ('SDHAF2', 'Gene', (47, 53)) ('SDH', 'Gene', (22, 25)) ('malignancy', 'Disease', 'MESH:D009369', (106, 116)) 108769 25140230 Mutations of SDHB and SDHD genes have been seen in about 5-10% of patients with non-syndromic phaeochromocytoma. ('SDHB', 'Gene', '6390', (13, 17)) ('SDHD', 'Gene', '6392', (22, 26)) ('Mutations', 'Var', (0, 9)) ('SDHD', 'Gene', (22, 26)) ('SDHB', 'Gene', (13, 17)) ('seen', 'Reg', (43, 47)) ('non-syndromic phaeochromocytoma', 'Disease', (80, 111)) ('non-syndromic phaeochromocytoma', 'Disease', 'MESH:C580335', (80, 111)) ('patients', 'Species', '9606', (66, 74)) 108785 25140230 Pasini and Stratakis suggest the patients with SDH-mutation, a high risk collective and postulate minimum follow-up program (a careful history and physical examination, annual measurement of the blood pressure and urinary catecholamines in addition to bi-annual imaging with CT and/or MRI), starting in the second decade of life (first decade in SDHB mutation carriers). ('patients', 'Species', '9606', (33, 41)) ('catecholamines', 'Chemical', 'MESH:D002395', (222, 236)) ('SDH', 'Gene', (47, 50)) ('SDH', 'Gene', (346, 349)) ('SDHB', 'Gene', '6390', (346, 350)) ('SDHB', 'Gene', (346, 350)) ('SDH', 'Gene', '6390', (47, 50)) ('mutation', 'Var', (351, 359)) ('SDH', 'Gene', '6390', (346, 349)) ('urinary catecholamines', 'Phenotype', 'HP:0011976', (214, 236)) 108797 23933152 Tianeptine also increased the levels of pro-apoptotic proteins, slowed cell cycle progression, and increased apoptosis in PC12 cells. ('levels of pro-apoptotic proteins', 'MPA', (30, 62)) ('slowed', 'NegReg', (64, 70)) ('PC12', 'CellLine', 'CVCL:0481', (122, 126)) ('apoptosis', 'CPA', (109, 118)) ('increased', 'PosReg', (16, 25)) ('cell cycle progression', 'CPA', (71, 93)) ('Tianeptine', 'Var', (0, 10)) ('increased', 'PosReg', (99, 108)) ('Tianeptine', 'Chemical', 'MESH:C050504', (0, 10)) 108799 23933152 Our study demonstrates, for the first time, that tianeptine interferes with normal life cycle of pheochromocytoma cells. ('pheochromocytoma', 'Disease', (97, 113)) ('tianeptine', 'Chemical', 'MESH:C050504', (49, 59)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (97, 113)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (97, 113)) ('tianeptine', 'Var', (49, 59)) ('rat', 'Species', '10116', (17, 20)) ('interferes', 'NegReg', (60, 70)) 108811 23933152 During our examination of the neuritogenic effect of an atypical antidepressant, tianeptine, on the rat pheochromocytoma PC12 cells, we have found that tianeptine reduces the survival and norepinephrine secretion of PC12 cells. ('tianeptine', 'Var', (152, 162)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (104, 120)) ('survival', 'CPA', (175, 183)) ('tianeptine', 'Chemical', 'MESH:C050504', (152, 162)) ('PC12', 'CellLine', 'CVCL:0481', (216, 220)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (104, 120)) ('reduces', 'NegReg', (163, 170)) ('norepinephrine', 'Chemical', 'MESH:D009638', (188, 202)) ('tianeptine', 'Chemical', 'MESH:C050504', (81, 91)) ('PC12', 'CellLine', 'CVCL:0481', (121, 125)) ('norepinephrine secretion', 'MPA', (188, 212)) ('pheochromocytoma', 'Disease', (104, 120)) ('rat', 'Species', '10116', (100, 103)) 108814 23933152 We also found that tianeptine caused specific and rapid reduction of cytoplasmic dynein in pheochromocytoma cells. ('cytoplasmic dynein', 'Gene', '38580', (69, 87)) ('pheochromocytoma', 'Disease', (91, 107)) ('tianeptine', 'Var', (19, 29)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (91, 107)) ('tianeptine', 'Chemical', 'MESH:C050504', (19, 29)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (91, 107)) ('reduction', 'NegReg', (56, 65)) ('cytoplasmic dynein', 'Gene', (69, 87)) 108819 23933152 Here, we demonstrate how tianeptine, an antidepressant with few side effects, perturbs microtubule organization, increases apoptosis, and decreases norepinephrine secretion in rat pheochromocytoma cells. ('pheochromocytoma', 'Disease', (180, 196)) ('norepinephrine', 'Chemical', 'MESH:D009638', (148, 162)) ('tianeptine', 'Chemical', 'MESH:C050504', (25, 35)) ('rat', 'Species', '10116', (176, 179)) ('decreases', 'NegReg', (138, 147)) ('rat', 'Species', '10116', (16, 19)) ('microtubule organization', 'MPA', (87, 111)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (180, 196)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (180, 196)) ('norepinephrine secretion', 'MPA', (148, 172)) ('tianeptine', 'Var', (25, 35)) ('apoptosis', 'CPA', (123, 132)) ('increases', 'PosReg', (113, 122)) ('perturbs', 'NegReg', (78, 86)) 108836 23933152 Immunoblotting was performed using antibodies to alpha-tubulin, beta-actin (Sigma), p150 (dynactin side arm), dynein intermediate chain (DIC), p53, and p27 (Santa Cruz Biotech, Santa Cruz, CA) as described in. ('alpha-tubulin', 'Protein', (49, 62)) ('beta-actin (Sigma', 'Gene', (64, 81)) ('p53', 'Var', (143, 146)) ('p150', 'Gene', (84, 88)) ('p150', 'Gene', '171026', (84, 88)) ('p27', 'Gene', (152, 155)) ('beta-actin (Sigma)', 'Gene', '81822', (64, 82)) ('p27', 'Gene', '83571', (152, 155)) 108845 23933152 Bound primary antibodies were detected using their corresponding secondary antibodies conjugated with either Alexa488nm or Alexa594nm (Life Technologies). ('Alexa488nm', 'Var', (109, 119)) ('Alexa594nm', 'Var', (123, 133)) ('Alexa594', 'Chemical', 'MESH:C417664', (123, 131)) ('Alexa488', 'Chemical', '-', (109, 117)) 108852 23933152 Endogenous microtubules were polymerized with 1 mM GTP/MgSO4 plus none, 20 muM paclitaxel, or 50 muM tianeptine. ('paclitaxel', 'Chemical', 'MESH:D017239', (79, 89)) ('GTP/MgSO4', 'Var', (51, 60)) ('muM', 'Gene', '56925', (97, 100)) ('GTP', 'Chemical', 'MESH:D006160', (51, 54)) ('tianeptine', 'Chemical', 'MESH:C050504', (101, 111)) ('muM', 'Gene', '56925', (75, 78)) ('MgSO4', 'Chemical', 'MESH:D008278', (55, 60)) ('muM', 'Gene', (97, 100)) ('muM', 'Gene', (75, 78)) 108883 23933152 32.8+-2.3% and 35.7+-1.3% of the cells treated with 1 and 10 muM tianeptine, respectively, lost normal interphase microtubule networks and showed bundled microtubules at the cell periphery (Fig. ('microtubules', 'MPA', (154, 166)) ('tianeptine', 'Chemical', 'MESH:C050504', (65, 75)) ('lost', 'NegReg', (91, 95)) ('muM', 'Gene', (61, 64)) ('interphase', 'CPA', (103, 113)) ('tianeptine', 'Var', (65, 75)) ('muM', 'Gene', '56925', (61, 64)) 108893 23933152 At 0 min after nocodazole washout, microtubules were completely depolymerized in the cells treated with mock, 1, or 10 muM tianeptine while those in the cells treated with 100 muM tianeptine remained in a bundled form (Fig. ('muM', 'Gene', (119, 122)) ('nocodazole', 'Chemical', 'MESH:D015739', (15, 25)) ('tianeptine', 'Chemical', 'MESH:C050504', (180, 190)) ('tianeptine', 'Var', (123, 133)) ('muM', 'Gene', '56925', (176, 179)) ('depolymerized', 'NegReg', (64, 77)) ('microtubules', 'Protein', (35, 47)) ('muM', 'Gene', '56925', (119, 122)) ('muM', 'Gene', (176, 179)) ('tianeptine', 'Chemical', 'MESH:C050504', (123, 133)) 108898 23933152 The cells treated with 1-100 muM tianeptine were shrunken with bundled microtubules (Fig. ('muM', 'Gene', (29, 32)) ('tianeptine', 'Var', (33, 43)) ('tianeptine', 'Chemical', 'MESH:C050504', (33, 43)) ('bundled microtubules', 'Protein', (63, 83)) ('muM', 'Gene', '56925', (29, 32)) 108900 23933152 70.4+-2.7% of the cells treated with 100 muM tianeptine showed bundled microtubules and the rest of the cells showed aberrant microtubule network (Fig. ('tianeptine', 'Chemical', 'MESH:C050504', (45, 55)) ('muM', 'Gene', '56925', (41, 44)) ('muM', 'Gene', (41, 44)) ('microtubules', 'Protein', (71, 83)) ('microtubule network', 'MPA', (126, 145)) ('tianeptine', 'Var', (45, 55)) 108901 23933152 These results suggest that tianeptine interferes with the formation of normal interphase microtubule network. ('interferes', 'NegReg', (38, 48)) ('formation of normal interphase microtubule network', 'MPA', (58, 108)) ('tianeptine', 'Var', (27, 37)) ('tianeptine', 'Chemical', 'MESH:C050504', (27, 37)) 108911 23933152 Bundled microtubules in the cells treated with either 1 or 10 muM tianeptine were also resistant to cold-induced microtubule depolymerization but to less extents than those with 100 muM tianeptine (data not shown). ('muM', 'Gene', '56925', (62, 65)) ('muM', 'Gene', (182, 185)) ('tianeptine', 'Chemical', 'MESH:C050504', (186, 196)) ('muM', 'Gene', (62, 65)) ('tianeptine', 'Var', (66, 76)) ('muM', 'Gene', '56925', (182, 185)) ('tianeptine', 'Chemical', 'MESH:C050504', (66, 76)) 108912 23933152 These results suggest that bundled microtubules in tianeptine-treated cells are less dynamic than those in mock-treated cells. ('tianeptine', 'Chemical', 'MESH:C050504', (51, 61)) ('microtubules', 'Protein', (35, 47)) ('less', 'NegReg', (80, 84)) ('tianeptine-treated', 'Var', (51, 69)) 108918 23933152 Given that the formation of aberrant microtubule network was not due to the direct effect of tianeptine on microtubules, we speculated that accumulation of bundled microtubules at the cell periphery in tianeptine-treated cells might be caused by loss of anchoring of microtubule minus ends to the centrosomes. ('tianeptine-treated', 'Var', (202, 220)) ('accumulation', 'PosReg', (140, 152)) ('tianeptine', 'Chemical', 'MESH:C050504', (93, 103)) ('bundled', 'MPA', (156, 163)) ('loss', 'NegReg', (246, 250)) ('microtubules', 'Protein', (164, 176)) ('tianeptine', 'Chemical', 'MESH:C050504', (202, 212)) ('anchoring', 'MPA', (254, 263)) 108923 23933152 Thus, tianeptine causes specific and rapid reduction of cytoplasmic dynein, which appears to contribute to dispersion of unanchored microtubules, resulting in accumulation of bundled microtubules at the cell periphery. ('tianeptine', 'Chemical', 'MESH:C050504', (6, 16)) ('unanchored microtubules', 'Disease', 'MESH:C567137', (121, 144)) ('cytoplasmic dynein', 'Gene', '38580', (56, 74)) ('reduction', 'NegReg', (43, 52)) ('accumulation', 'PosReg', (159, 171)) ('unanchored microtubules', 'Disease', (121, 144)) ('bundled microtubules', 'MPA', (175, 195)) ('tianeptine', 'Var', (6, 16)) ('dispersion of', 'MPA', (107, 120)) ('cytoplasmic dynein', 'Gene', (56, 74)) 108926 23933152 PC12 cells were transfected with GFP tag alone or GFP-tagged dynamitin and stained with anti-alpha-tubulin antibody. ('dynamitin', 'Protein', (61, 70)) ('PC12', 'CellLine', 'CVCL:0481', (0, 4)) ('GFP-tagged', 'Var', (50, 60)) 108927 23933152 Thus, it is clear that inhibition of cytoplasmic dynein in tianeptine-treated cells causes microtubule bundling. ('tianeptine', 'Chemical', 'MESH:C050504', (59, 69)) ('cytoplasmic dynein', 'Gene', (37, 55)) ('cytoplasmic dynein', 'Gene', '38580', (37, 55)) ('inhibition', 'Var', (23, 33)) ('microtubule bundling', 'MPA', (91, 111)) 108928 23933152 We also found that the nuclear membrane protein, lamin-B1, was aggregated in tianeptine-treated PC12 cells while not in mock-treated cells (Fig. ('PC12', 'CellLine', 'CVCL:0481', (96, 100)) ('aggregated', 'MPA', (63, 73)) ('tianeptine', 'Chemical', 'MESH:C050504', (77, 87)) ('tianeptine-treated', 'Var', (77, 95)) ('lamin-B1', 'Gene', (49, 57)) ('lamin-B1', 'Gene', '116685', (49, 57)) 108929 23933152 5A-C), suggesting that tianeptine has a pro-apoptotic effect. ('pro-apoptotic', 'MPA', (40, 53)) ('tianeptine', 'Var', (23, 33)) ('tianeptine', 'Chemical', 'MESH:C050504', (23, 33)) 108930 23933152 Thus, we examined whether tianeptine increased the levels of the pro-apoptotic proteins, p53 and p27. ('tianeptine', 'Var', (26, 36)) ('levels of', 'MPA', (51, 60)) ('p27', 'Gene', (97, 100)) ('increased', 'PosReg', (37, 46)) ('tianeptine', 'Chemical', 'MESH:C050504', (26, 36)) ('p53', 'MPA', (89, 92)) ('p27', 'Gene', '83571', (97, 100)) 108939 23933152 After 24-h post-release, the percent of cells accumulated in S phase was increased in tianeptine-treated cells compared to mock-treated cells (mock: 39.52+-0.02%, 1 muM tianeptine: 48.66+-0.03, p<0.05 [n=3]). ('increased', 'PosReg', (73, 82)) ('S phase', 'MPA', (61, 68)) ('muM', 'Gene', '56925', (165, 168)) ('tianeptine', 'Chemical', 'MESH:C050504', (169, 179)) ('tianeptine-treated', 'Var', (86, 104)) ('muM', 'Gene', (165, 168)) ('tianeptine', 'Chemical', 'MESH:C050504', (86, 96)) 108940 23933152 After 48-h post-release, there was a significant increase in the percent of tianeptine-treated cells that had accumulated in G2/M phase compared to those of mock-treated cells (Fig. ('tianeptine', 'Chemical', 'MESH:C050504', (76, 86)) ('accumulated', 'PosReg', (110, 121)) ('increase', 'PosReg', (49, 57)) ('G2/M phase', 'CPA', (125, 135)) ('tianeptine-treated', 'Var', (76, 94)) 108946 23933152 These results suggest that tianeptine not only slows cell cycle progression but also causes cell death in PC12 cells. ('causes', 'Reg', (85, 91)) ('PC12', 'CellLine', 'CVCL:0481', (106, 110)) ('cell cycle progression', 'CPA', (53, 75)) ('tianeptine', 'Var', (27, 37)) ('slows', 'NegReg', (47, 52)) ('tianeptine', 'Chemical', 'MESH:C050504', (27, 37)) ('cell death', 'CPA', (92, 102)) 108954 23933152 Stimulated secretion of norepinephrine was significantly decreased in cells treated with 1 muM tianeptine compared to that in mock-treated cells (Fig. ('secretion of norepinephrine', 'MPA', (11, 38)) ('tianeptine', 'Var', (95, 105)) ('norepinephrine', 'Chemical', 'MESH:D009638', (24, 38)) ('tianeptine', 'Chemical', 'MESH:C050504', (95, 105)) ('muM', 'Gene', '56925', (91, 94)) ('muM', 'Gene', (91, 94)) ('decreased', 'NegReg', (57, 66)) 108956 23933152 PC12 cells treated with 10 muM tianeptine also showed a slight decrease in norepinephrine secretion (Fig. ('tianeptine', 'Chemical', 'MESH:C050504', (31, 41)) ('muM', 'Gene', '56925', (27, 30)) ('norepinephrine', 'Chemical', 'MESH:D009638', (75, 89)) ('PC12', 'CellLine', 'CVCL:0481', (0, 4)) ('muM', 'Gene', (27, 30)) ('decrease', 'NegReg', (63, 71)) ('norepinephrine secretion', 'MPA', (75, 99)) ('tianeptine', 'Var', (31, 41)) 108961 23933152 The reduction in hormone secretion in tianeptine-treated cells may be due to bundled microtubules that decrease the localization of hormone-containing LDCVs to the plasma membrane. ('localization', 'MPA', (116, 128)) ('microtubules', 'Protein', (85, 97)) ('hormone secretion', 'MPA', (17, 34)) ('reduction', 'NegReg', (4, 13)) ('decrease', 'NegReg', (103, 111)) ('tianeptine-treated', 'Var', (38, 56)) ('tianeptine', 'Chemical', 'MESH:C050504', (38, 48)) 108970 23933152 8A: 0.59+-0.15 ng/mL [mock], 0.26+-0.04 ng/mL [1 muM], and 0.18+-0.04 ng/mL [10 muM], p<0.05 vs. control). ('muM', 'Gene', '56925', (49, 52)) ('0.18+-0.04 ng/mL', 'Var', (59, 75)) ('0.26+-0.04 ng/mL', 'Var', (29, 45)) ('muM', 'Gene', (49, 52)) ('muM', 'Gene', '56925', (80, 83)) ('muM', 'Gene', (80, 83)) 108971 23933152 These results suggest that tianeptine decreases stimulated secretion of epinephrine in the mouse pheochromocytoma cells. ('decreases', 'NegReg', (38, 47)) ('pheochromocytoma', 'Disease', (97, 113)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (97, 113)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (97, 113)) ('stimulated secretion of epinephrine', 'MPA', (48, 83)) ('tianeptine', 'Var', (27, 37)) ('epinephrine', 'Chemical', 'MESH:D004837', (72, 83)) ('mouse', 'Species', '10090', (91, 96)) ('tianeptine', 'Chemical', 'MESH:C050504', (27, 37)) 108974 23933152 The protein levels of DIC in MPC cells treated with 10 muM tianeptine (0.79+-0.13) were lower than those in mock-treated cells (1.31+-0.06) (Fig. ('tianeptine', 'Chemical', 'MESH:C050504', (59, 69)) ('protein levels', 'MPA', (4, 18)) ('muM', 'Gene', '56925', (55, 58)) ('DIC', 'MPA', (22, 25)) ('muM', 'Gene', (55, 58)) ('tianeptine', 'Var', (59, 69)) ('lower', 'NegReg', (88, 93)) 108975 23933152 Conversely, the protein levels of p53 in MPC cells treated with 10 muM tianeptine (0.87+-0.29) were much higher than mock-treated cells (0.17+-0.11) (Fig. ('tianeptine', 'Var', (71, 81)) ('higher', 'PosReg', (105, 111)) ('protein levels', 'MPA', (16, 30)) ('muM', 'Gene', '56925', (67, 70)) ('tianeptine', 'Chemical', 'MESH:C050504', (71, 81)) ('muM', 'Gene', (67, 70)) 108985 23933152 In addition, tianeptine decreases stimulated secretion of norepinephrine in PC12 cells and of epinephrine in the mouse pheochromocytoma MPC cells. ('decreases', 'NegReg', (24, 33)) ('epinephrine', 'Chemical', 'MESH:D004837', (61, 72)) ('tianeptine', 'Var', (13, 23)) ('pheochromocytoma', 'Disease', (119, 135)) ('secretion', 'MPA', (45, 54)) ('norepinephrine', 'Chemical', 'MESH:D009638', (58, 72)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (119, 135)) ('tianeptine', 'Chemical', 'MESH:C050504', (13, 23)) ('epinephrine', 'Chemical', 'MESH:D004837', (94, 105)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (119, 135)) ('PC12', 'CellLine', 'CVCL:0481', (76, 80)) ('mouse', 'Species', '10090', (113, 118)) 108994 23933152 Conversely, single treatment with 10 muM tianeptine caused microtubule bundling in ~36% of the cells and double treatments did so in ~59%. ('muM', 'Gene', '56925', (37, 40)) ('tianeptine', 'Var', (41, 51)) ('tianeptine', 'Chemical', 'MESH:C050504', (41, 51)) ('microtubule bundling', 'MPA', (59, 79)) ('muM', 'Gene', (37, 40)) 108997 23933152 First, we raised a question of how tianeptine interfered with the formation of normal microtubule network and formed bundled microtubules. ('formation', 'MPA', (66, 75)) ('interfered', 'NegReg', (46, 56)) ('tianeptine', 'Var', (35, 45)) ('tianeptine', 'Chemical', 'MESH:C050504', (35, 45)) 109003 23933152 Accordingly, it is clear that tianeptine interferes with the organization process of microtubule network, thus causing microtubule bundling. ('interferes', 'NegReg', (41, 51)) ('tianeptine', 'Var', (30, 40)) ('microtubule bundling', 'MPA', (119, 139)) ('causing', 'Reg', (111, 118)) ('tianeptine', 'Chemical', 'MESH:C050504', (30, 40)) ('organization', 'MPA', (61, 73)) 109015 23933152 In male Wistar rats, the oral administration of tianeptine (5 mg/kg) did not increase the plasma levels of norepinephrine but rather decreased those in stressed animals. ('tianeptine', 'Chemical', 'MESH:C050504', (48, 58)) ('Wistar rats', 'Species', '10116', (8, 19)) ('rat', 'Species', '10116', (15, 18)) ('plasma levels of norepinephrine', 'MPA', (90, 121)) ('tianeptine', 'Var', (48, 58)) ('norepinephrine', 'Chemical', 'MESH:D009638', (107, 121)) ('rat', 'Species', '10116', (126, 129)) ('rat', 'Species', '10116', (38, 41)) ('decreased', 'NegReg', (133, 142)) 109018 23933152 Our image analysis showed that the localization of CgA-containing LDCVs at the proximity of the plasma membrane was significantly decreased in tianeptine-treated PC12 cells. ('tianeptine-treated', 'Var', (143, 161)) ('localization', 'MPA', (35, 47)) ('tianeptine', 'Chemical', 'MESH:C050504', (143, 153)) ('PC12', 'CellLine', 'CVCL:0481', (162, 166)) ('CgA', 'Gene', '24258', (51, 54)) ('CgA', 'Gene', (51, 54)) ('decreased', 'NegReg', (130, 139)) 109022 23933152 Tianeptine also reduced stimulated secretion of epinephrine without affecting norepinephrine secretion. ('epinephrine', 'Chemical', 'MESH:D004837', (81, 92)) ('stimulated secretion of epinephrine', 'MPA', (24, 59)) ('norepinephrine', 'Chemical', 'MESH:D009638', (78, 92)) ('reduced', 'NegReg', (16, 23)) ('Tianeptine', 'Var', (0, 10)) ('Tianeptine', 'Chemical', 'MESH:C050504', (0, 10)) ('epinephrine', 'Chemical', 'MESH:D004837', (48, 59)) 109024 23933152 We also found that the negative effects of tianeptine on microtubule organization and cytoplasmic dynein were specific to pheochromocytoma cells. ('tianeptine', 'Var', (43, 53)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (122, 138)) ('pheochromocytoma', 'Disease', (122, 138)) ('tianeptine', 'Chemical', 'MESH:C050504', (43, 53)) ('cytoplasmic dynein', 'Gene', '38580', (86, 104)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (122, 138)) ('cytoplasmic dynein', 'Gene', (86, 104)) ('negative', 'NegReg', (23, 31)) ('microtubule organization', 'MPA', (57, 81)) 109027 23933152 We still need to examine whether other types of tumor cells are affected by tianeptine or not to confirm the specificity of tianeptine to pheochromocytoma cells. ('pheochromocytoma', 'Disease', (138, 154)) ('tianeptine', 'Chemical', 'MESH:C050504', (76, 86)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (138, 154)) ('tumor', 'Disease', (48, 53)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (138, 154)) ('tianeptine', 'Chemical', 'MESH:C050504', (124, 134)) ('tumor', 'Disease', 'MESH:D009369', (48, 53)) ('tianeptine', 'Var', (76, 86)) ('tumor', 'Phenotype', 'HP:0002664', (48, 53)) 109029 23933152 Tianeptine causes microtubule bundling, reduces cytoplasmic dynein and increases p53, which slows cell cycle progression and causes apoptosis. ('apoptosis', 'CPA', (132, 141)) ('reduces', 'NegReg', (40, 47)) ('microtubule', 'Protein', (18, 29)) ('cytoplasmic dynein', 'Gene', '38580', (48, 66)) ('causes', 'Reg', (125, 131)) ('slows', 'NegReg', (92, 97)) ('increases', 'PosReg', (71, 80)) ('Tianeptine', 'Var', (0, 10)) ('Tianeptine', 'Chemical', 'MESH:C050504', (0, 10)) ('cytoplasmic dynein', 'Gene', (48, 66)) ('cell cycle progression', 'CPA', (98, 120)) ('p53', 'MPA', (81, 84)) 109032 23933152 Tianeptine causes microtubule bundling in pheochromocytoma cells. ('microtubule bundling', 'MPA', (18, 38)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (42, 58)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (42, 58)) ('Tianeptine', 'Var', (0, 10)) ('Tianeptine', 'Chemical', 'MESH:C050504', (0, 10)) ('pheochromocytoma', 'Disease', (42, 58)) 109033 23933152 Tianeptine causes rapid and specific degradation of cytoplasmic dynein. ('cytoplasmic dynein', 'Gene', '38580', (52, 70)) ('cytoplasmic dynein', 'Gene', (52, 70)) ('degradation', 'MPA', (37, 48)) ('Tianeptine', 'Var', (0, 10)) ('Tianeptine', 'Chemical', 'MESH:C050504', (0, 10)) 109034 23933152 Tianeptine causes apoptosis in pheochromocytoma cells. ('pheochromocytoma', 'Disease', (31, 47)) ('Tianeptine', 'Chemical', 'MESH:C050504', (0, 10)) ('Tianeptine', 'Var', (0, 10)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (31, 47)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (31, 47)) 109035 23933152 Tianeptine decreases norepinephrine secretion in rat pheochromocytoma cells. ('pheochromocytoma', 'Disease', (53, 69)) ('decreases', 'NegReg', (11, 20)) ('norepinephrine', 'Chemical', 'MESH:D009638', (21, 35)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (53, 69)) ('Tianeptine', 'Var', (0, 10)) ('Tianeptine', 'Chemical', 'MESH:C050504', (0, 10)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (53, 69)) ('rat', 'Species', '10116', (49, 52)) ('norepinephrine secretion', 'MPA', (21, 45)) 109036 23933152 Tianeptine decreases epinephrine secretion in mouse pheochromocytoma cells. ('pheochromocytoma', 'Disease', 'MESH:D010673', (52, 68)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (52, 68)) ('decreases', 'NegReg', (11, 20)) ('epinephrine', 'Chemical', 'MESH:D004837', (21, 32)) ('mouse', 'Species', '10090', (46, 51)) ('Tianeptine', 'Var', (0, 10)) ('Tianeptine', 'Chemical', 'MESH:C050504', (0, 10)) ('pheochromocytoma', 'Disease', (52, 68)) ('epinephrine secretion', 'MPA', (21, 42)) 109097 19522823 SDH MUTATIONS IN TUMOURIGENESIS AND INHERITED ENDOCRINE TUMOURS A genetic predisposition has been recognized for paragangliomas and adrenal or extra-adrenal pheochromocytomas was recognized years ago. ('paragangliomas', 'Disease', (113, 127)) ('paragangliomas', 'Disease', 'MESH:D010235', (113, 127)) ('paragangliomas', 'Phenotype', 'HP:0002668', (113, 127)) ('adrenal pheochromocytomas', 'Phenotype', 'HP:0006748', (149, 174)) ('paraganglioma', 'Phenotype', 'HP:0002668', (113, 126)) ('SDH', 'Gene', (0, 3)) ('extra-adrenal pheochromocytomas', 'Disease', 'MESH:D010673', (143, 174)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (157, 174)) ('adrenal', 'Disease', (132, 139)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (157, 173)) ('TUMOURS', 'Phenotype', 'HP:0002664', (56, 63)) ('MUTATIONS', 'Var', (4, 13)) ('extra-adrenal pheochromocytomas', 'Disease', (143, 174)) ('SDH', 'Gene', '6390', (0, 3)) ('extra-adrenal pheochromocytomas', 'Phenotype', 'HP:0006737', (143, 174)) 109123 19522823 While homozygote germline mutations affecting the SDHA gene cause Leigh syndrome, a subacute necrotizing encephalomyelopathy during infancy, SDHD, SDHB and SDHC heterozygous mutations cause a genetic predisposition to HNPGLs and adrenal / extra-adrenal PHEOs called "paraganglioma-pheochromocytoma syndrome". ('necrotizing encephalomyelopathy', 'Disease', (93, 124)) ('SDHA', 'Gene', '6389', (50, 54)) ('HNPGLs', 'Chemical', '-', (218, 224)) ('mutations', 'Var', (26, 35)) ('SDHC', 'Gene', (156, 160)) ('paraganglioma-pheochromocytoma syndrome', 'Disease', 'MESH:D010673', (267, 306)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (66, 80)) ('SDHB', 'Gene', '6390', (147, 151)) ('SDHD', 'Gene', '6392', (141, 145)) ('Leigh syndrome', 'Disease', (66, 80)) ('paraganglioma', 'Phenotype', 'HP:0002668', (267, 280)) ('paraganglioma-pheochromocytoma syndrome', 'Disease', (267, 306)) ('HNPGLs', 'Disease', (218, 224)) ('necrotizing encephalomyelopathy', 'Phenotype', 'HP:0006976', (93, 124)) ('SDHB', 'Gene', (147, 151)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (281, 297)) ('SDHC', 'Gene', '6391', (156, 160)) ('SDHD', 'Gene', (141, 145)) ('cause', 'Reg', (60, 65)) ('necrotizing encephalomyelopathy', 'Disease', 'MESH:D007888', (93, 124)) ('SDHA', 'Gene', (50, 54)) ('PHEOs', 'Chemical', '-', (253, 258)) 109130 19522823 Indeed, loss of the maternal 11p15 occurs frequently in paediatric tumors including Wilm's tumours, embrional rhabdomyosarcoma, hepatoblastoma and adrenocortical carcinoma thus suggesting the involvement of CNKN1C (p57Kip2) and/or H19-IGF2 dysregulation in tumourigenesis. ('embrional rhabdomyosarcoma', 'Disease', 'MESH:D012208', (100, 126)) ('tumours', 'Phenotype', 'HP:0002664', (91, 98)) ('adrenocortical carcinoma', 'Phenotype', 'HP:0006744', (147, 171)) ('11p15', 'Gene', (29, 34)) ("Wilm's tumours", 'Disease', 'MESH:D009396', (84, 98)) ('IGF2', 'Gene', (235, 239)) ('H19', 'Gene', (231, 234)) ('loss', 'Var', (8, 12)) ('sarcoma', 'Phenotype', 'HP:0100242', (119, 126)) ('hepatoblastoma', 'Phenotype', 'HP:0002884', (128, 142)) ('tumour', 'Phenotype', 'HP:0002664', (91, 97)) ('tumour', 'Disease', 'MESH:D009369', (91, 97)) ('adrenocortical carcinoma', 'Disease', 'MESH:D018268', (147, 171)) ('tumour', 'Phenotype', 'HP:0002664', (257, 263)) ('tumour', 'Disease', (91, 97)) ('adrenocortical carcinoma', 'Disease', (147, 171)) ('H19', 'Gene', '283120', (231, 234)) ('tumour', 'Disease', 'MESH:D009369', (257, 263)) ('tumors', 'Phenotype', 'HP:0002664', (67, 73)) ('tumour', 'Disease', (257, 263)) ("Wilm's tumours", 'Disease', (84, 98)) ('embrional rhabdomyosarcoma', 'Disease', (100, 126)) ('IGF2', 'Gene', '3481', (235, 239)) ('tumor', 'Phenotype', 'HP:0002664', (67, 72)) ("Wilm's tumours", 'Phenotype', 'HP:0002667', (84, 98)) ('hepatoblastoma', 'Disease', (128, 142)) ('tumors', 'Disease', (67, 73)) ('carcinoma', 'Phenotype', 'HP:0030731', (162, 171)) ('p57Kip2', 'Gene', (215, 222)) ('hepatoblastoma', 'Disease', 'MESH:D018197', (128, 142)) ('rhabdomyosarcoma', 'Phenotype', 'HP:0002859', (110, 126)) ('p57Kip2', 'Gene', '1028', (215, 222)) ('tumors', 'Disease', 'MESH:D009369', (67, 73)) 109131 19522823 Interestingly, loss of 11p has been demonstrated in 33-50% of HNPGLs, in 27% of abdominal PGLs, in 17-48% of sporadic PHEOs and in 40% to 86% of PHEOs from MEN2A and Von Hippel Lindau (VHL) patients, respectively. ('HNPGLs', 'Disease', (62, 68)) ('MEN2A', 'Gene', (156, 161)) ('Von Hippel Lindau', 'Gene', (166, 183)) ('patients', 'Species', '9606', (190, 198)) ('MEN2A', 'Gene', '5979', (156, 161)) ('VHL', 'Disease', 'MESH:D006623', (185, 188)) ('Von Hippel Lindau', 'Gene', '7428', (166, 183)) ('VHL', 'Disease', (185, 188)) ('loss', 'Var', (15, 19)) ('PHEOs', 'Chemical', '-', (145, 150)) ('HNPGLs', 'Chemical', '-', (62, 68)) ('11p', 'Protein', (23, 26)) ('PHEOs', 'Chemical', '-', (118, 123)) 109133 19522823 Possible evidence supporting the involvement of the BW locus in the parent-of origin effect is given by the work of Pigny and colleagues on a family with an affected child who inherited the SDHD mutation p.Trp43X from his mother. ('SDHD', 'Gene', '6392', (190, 194)) ('child', 'Species', '9606', (166, 171)) ('p.Trp43X', 'Mutation', 'rs104894308', (204, 212)) ('SDHD', 'Gene', (190, 194)) ('p.Trp43X', 'Var', (204, 212)) 109136 19522823 However, no further information was given about the presence of clinical signs related to the BW syndrome in the child affected by the cervical PGL, as expected in case of imprinting changes at DMR1 (i.e. ('BW syndrome', 'Disease', (94, 105)) ('changes', 'Var', (183, 190)) ('child', 'Species', '9606', (113, 118)) ('BW syndrome', 'Disease', 'MESH:D013577', (94, 105)) 109137 19522823 silencing of H19 - IGF2 over expression). ('over', 'PosReg', (24, 28)) ('IGF2', 'Gene', '3481', (19, 23)) ('IGF2', 'Gene', (19, 23)) ('H19', 'Gene', '283120', (13, 16)) ('silencing', 'Var', (0, 9)) ('H19', 'Gene', (13, 16)) 109140 19522823 Two-hundred-twenty-seven index cases carriers of SDHB germline mutations have been reported to date, including 216 deleterious mutations and 11 variants (missense and intronic substitutions) of unknown biological significance (VUS) for a total of 275 affected patients including 48 family members. ('SDHB', 'Gene', (49, 53)) ('VUS', 'Chemical', '-', (227, 230)) ('patients', 'Species', '9606', (260, 268)) ('SDHB', 'Gene', '6390', (49, 53)) ('mutations', 'Var', (127, 136)) 109143 19522823 Other recurrent mutations include the splice site IVS2+1G>T (c.72+1G>T) identified in 9 cases of Scottish origin, p.Arg46X identified in 9 families from UK and US, p.Arg242His in 9 families from Germany and Belgium, p.Arg90X and p.Arg46Gln in 9 and 14 different families, respectively, of various ethnical origin. ('p.Arg46Gln', 'Mutation', 'rs772551056', (229, 239)) ('p.Arg90X', 'Mutation', 'rs74315366', (216, 224)) ('p.Arg90X', 'Var', (216, 224)) ('p.Arg46X', 'Var', (114, 122)) ('p.Arg46X', 'Mutation', 'rs74315370', (114, 122)) ('c.72+1G>T', 'Mutation', 'rs587782703', (61, 70)) ('p.Arg242His', 'Var', (164, 175)) ('IVS2+1G>T', 'Mutation', 'c.IVS2+1G>T', (50, 59)) ('p.Arg242His', 'Mutation', 'rs74315368', (164, 175)) ('IVS2+1G>T', 'Var', (50, 59)) ('p.Arg46Gln', 'Var', (229, 239)) 109145 19522823 Well known recurrent mutations with a founder effect include p.Asp92Tyr, p.Leu95Pro and p.Leu139Pro in Dutch patients, p.Gln109X in central Italy and p.Met1Ile in Chinese families while the p.Pro81Leu has been suggested as hot spots for new mutations due to C>T transition. ('p.Leu95Pro', 'Var', (73, 83)) ('p.Met1Ile', 'Mutation', 'rs370173494', (150, 159)) ('patients', 'Species', '9606', (109, 117)) ('p.Leu139Pro', 'Var', (88, 99)) ('p.Asp92Tyr', 'Mutation', 'p.D92Y', (61, 71)) ('p.Leu139Pro', 'Mutation', 'p.L139P', (88, 99)) ('p.Met1Ile', 'Var', (150, 159)) ('p.Gln109X', 'Mutation', 'rs1060503770', (119, 128)) ('p.Pro81Leu', 'Mutation', 'p.P81L', (190, 200)) ('p.Leu95Pro', 'Mutation', 'rs80338846', (73, 83)) ('p.Gln109X', 'Var', (119, 128)) ('p.Asp92Tyr', 'Var', (61, 71)) 109147 19522823 Among the 15 different germline mutations reported to date, 7 (47%) are nonsense, 5 (33%) splicing defect, 2 (19%) missense and one (7%) Alu-mediated genomic deletion of 8.4 kb involving exon 6. ('missense', 'Var', (115, 123)) ('splicing', 'MPA', (90, 98)) ('Alu', 'Chemical', '-', (137, 140)) 109148 19522823 As it will be shown in the next paragraph, germline mutations in SDH genes are associated with sporadic and familial PGLs involving either sympathetic paraganglia (mainly abdominal, adrenal or extra-adrenal) or parasympathetic organs in the head and neck region. ('SDH', 'Gene', '6390', (65, 68)) ('SDH', 'Gene', (65, 68)) ('associated', 'Reg', (79, 89)) ('germline mutations', 'Var', (43, 61)) 109151 19522823 Therefore, the prevalence of SDHB germline mutations among sporadic cases (tables 1 and 4) is somewhat higher than that one of SDHD (6% versus 3% for PHEOs/PGLs, 6.5% versus 2.4% for HNPGLs). ('PHEOs', 'Chemical', '-', (150, 155)) ('SDHB', 'Gene', '6390', (29, 33)) ('HNPGLs', 'Chemical', '-', (183, 189)) ('SDHB', 'Gene', (29, 33)) ('germline', 'Var', (34, 42)) ('SDHD', 'Gene', (127, 131)) ('SDHD', 'Gene', '6392', (127, 131)) ('higher', 'PosReg', (103, 109)) 109153 19522823 The general prevalence of SDH mutations among sporadic and non-syndromic cases of adrenal and extra-adrenal PGLs is around 6% (50/795) with 9% of frequency in cases tested negative for RET and VHL mutation. ('RET', 'Gene', '5979', (185, 188)) ('RET', 'Gene', (185, 188)) ('mutations', 'Var', (30, 39)) ('non-syndromic', 'Disease', (59, 72)) ('VHL', 'Disease', (193, 196)) ('non-syndromic', 'Disease', 'MESH:C580335', (59, 72)) ('SDH', 'Gene', '6390', (26, 29)) ('VHL', 'Disease', 'MESH:D006623', (193, 196)) ('SDH', 'Gene', (26, 29)) 109154 19522823 However, the prevalence of SDH mutations is considerably higher in sporadic extra-adrenal tumours (15/45, 33%), malignant tumours (38%, table 2) and paediatric cases (29%, table 3) with strong preponderance of SDHB mutations in all categories. ('SDH', 'Gene', '6390', (210, 213)) ('mutations', 'Var', (31, 40)) ('tumours', 'Phenotype', 'HP:0002664', (122, 129)) ('higher', 'Reg', (57, 63)) ('SDH', 'Gene', (210, 213)) ('malignant tumours', 'Disease', 'MESH:D009369', (112, 129)) ('SDH', 'Gene', (27, 30)) ('malignant tumours', 'Disease', (112, 129)) ('tumour', 'Phenotype', 'HP:0002664', (90, 96)) ('extra-adrenal tumours', 'Disease', 'MESH:D000310', (76, 97)) ('tumours', 'Phenotype', 'HP:0002664', (90, 97)) ('extra-adrenal tumours', 'Disease', (76, 97)) ('SDHB', 'Gene', '6390', (210, 214)) ('SDHB', 'Gene', (210, 214)) ('SDH', 'Gene', '6390', (27, 30)) ('tumour', 'Phenotype', 'HP:0002664', (122, 128)) 109155 19522823 SDH mutations seem less frequent than RET and VHL in bilateral or familial adrenal PHEOs with a prevalence around 10-17% while in familial aggregations of adrenal and extra-adrenal tumours (including HNPGLs) the frequency reaches 85% (11/13) (table 3). ('extra-adrenal tumours', 'Disease', (167, 188)) ('familial adrenal PHEOs', 'Disease', (66, 88)) ('extra-adrenal tumours', 'Disease', 'MESH:D000310', (167, 188)) ('tumour', 'Phenotype', 'HP:0002664', (181, 187)) ('RET', 'Gene', '5979', (38, 41)) ('bilateral', 'Disease', (53, 62)) ('SDH', 'Gene', (0, 3)) ('HNPGLs', 'Chemical', '-', (200, 206)) ('PHEOs', 'Chemical', '-', (83, 88)) ('tumours', 'Phenotype', 'HP:0002664', (181, 188)) ('RET', 'Gene', (38, 41)) ('mutations', 'Var', (4, 13)) ('VHL', 'Disease', 'MESH:D006623', (46, 49)) ('VHL', 'Disease', (46, 49)) ('SDH', 'Gene', '6390', (0, 3)) 109156 19522823 Similar SDH mutations frequencies can be found in cases affected by HNPGLs outside the area of Low Countries (table 4). ('mutations', 'Var', (12, 21)) ('SDH', 'Gene', '6390', (8, 11)) ('SDH', 'Gene', (8, 11)) ('HNPGLs', 'Chemical', '-', (68, 74)) 109157 19522823 The general prevalence of mutations among sporadic, multiple and familial HNPGLs is 9.5%, 71% and 88%, respectively, with a predominance of SDHD germline mutations among multiple and familial cases, in accordance to the overall higher penetrance of mutations of this gene. ('is 9', 'Species', '1411645', (81, 85)) ('familial HNPGLs', 'Disease', 'MESH:D009394', (65, 80)) ('mutations', 'Var', (26, 35)) ('SDHD', 'Gene', (140, 144)) ('SDHD', 'Gene', '6392', (140, 144)) ('familial HNPGLs', 'Disease', (65, 80)) ('germline mutations', 'Var', (145, 163)) 109158 19522823 In the Netherlands and Belgium (table 5) due to the presence of founder mutations associated with the low altitude (which decreases the hypoxic stimulation of paraganglia) the prevalence of SDH mutations among sporadic cases is remarkably higher (29%) and all familial cases that are not linked to PGL2 are caused by SDHD germline mutations. ('familial', 'Disease', (260, 268)) ('PGL2', 'Gene', (298, 302)) ('PGL2', 'Gene', '54949', (298, 302)) ('SDHD', 'Gene', '6392', (317, 321)) ('SDH', 'Gene', '6390', (317, 320)) ('SDHD', 'Gene', (317, 321)) ('mutations', 'Var', (194, 203)) ('hypoxic stimulation', 'MPA', (136, 155)) ('SDH', 'Gene', '6390', (190, 193)) ('SDH', 'Gene', (317, 320)) ('SDH', 'Gene', (190, 193)) ('caused by', 'Reg', (307, 316)) 109159 19522823 Analysis of the clinical manifestations of 689 published carriers of deleterious mutations in SDHB (264), SDHC (30) and SDHD (395) led to the recognition of a genotype-phenotype correlation. ('SDHC', 'Gene', (106, 110)) ('SDHB', 'Gene', (94, 98)) ('SDHC', 'Gene', '6391', (106, 110)) ('SDHD', 'Gene', '6392', (120, 124)) ('SDHD', 'Gene', (120, 124)) ('mutations', 'Var', (81, 90)) ('SDHB', 'Gene', '6390', (94, 98)) 109160 19522823 Affected carriers of SDHD and SDHC mutations have more frequently a positive family history (61% and 62.5%, respectively) than SDHB mutation carriers (31%). ('SDHC', 'Gene', (30, 34)) ('SDHB', 'Gene', '6390', (127, 131)) ('SDHC', 'Gene', '6391', (30, 34)) ('SDHD', 'Gene', '6392', (21, 25)) ('SDHB', 'Gene', (127, 131)) ('SDHD', 'Gene', (21, 25)) ('mutations', 'Var', (35, 44)) 109161 19522823 Median age at diagnosis of the first tumour is similar in SDHB and SDHD mutations carriers (32 and 33 years of age, respectively) and lower than that in SDHC mutation carriers (38 years). ('mutations', 'Var', (72, 81)) ('SDHB', 'Gene', (58, 62)) ('lower', 'NegReg', (134, 139)) ('tumour', 'Disease', (37, 43)) ('SDHD', 'Gene', (67, 71)) ('SDHD', 'Gene', '6392', (67, 71)) ('SDHC', 'Gene', (153, 157)) ('SDHB', 'Gene', '6390', (58, 62)) ('tumour', 'Phenotype', 'HP:0002664', (37, 43)) ('SDHC', 'Gene', '6391', (153, 157)) ('tumour', 'Disease', 'MESH:D009369', (37, 43)) 109163 19522823 Multiple primary tumours are frequently observed in SDHD mutation carriers (79%, 167/211 with available information) while patients with SDHB and SDHC mutations have single tumours in 67% and 73% of the cases, respectively. ('mutation', 'Var', (57, 65)) ('tumours', 'Disease', 'MESH:D009369', (173, 180)) ('tumours', 'Disease', (173, 180)) ('SDHD', 'Gene', '6392', (52, 56)) ('tumour', 'Phenotype', 'HP:0002664', (17, 23)) ('tumours', 'Phenotype', 'HP:0002664', (17, 24)) ('observed', 'Reg', (40, 48)) ('SDHB', 'Gene', '6390', (137, 141)) ('patients', 'Species', '9606', (123, 131)) ('SDHB', 'Gene', (137, 141)) ('SDHC', 'Gene', (146, 150)) ('tumour', 'Phenotype', 'HP:0002664', (173, 179)) ('tumours', 'Disease', 'MESH:D009369', (17, 24)) ('tumours', 'Disease', (17, 24)) ('tumours', 'Phenotype', 'HP:0002664', (173, 180)) ('SDHC', 'Gene', '6391', (146, 150)) ('SDHD', 'Gene', (52, 56)) 109164 19522823 As shown in figure 2 (right panels) the most frequent phenotype associated with SDHB germline mutations is the development of extra-adrenal PGL (53%, 140/264), mainly abdominal (including pelvis and retro-peritoneum) but also thoracic, mediastinal and cervical. ('cervical', 'Disease', (252, 260)) ('mutations', 'Var', (94, 103)) ('SDHB', 'Gene', (80, 84)) ('mediastinal', 'Disease', (236, 247)) ('extra-adrenal PGL', 'MPA', (126, 143)) ('thoracic', 'Disease', (226, 234)) ('SDHB', 'Gene', '6390', (80, 84)) 109167 19522823 Tables 6, 7 and 8 summarize the clinical manifestations of SDH subunit mutation carriers as per published reports and including data included in the present report. ('mutation', 'Var', (71, 79)) ('SDH', 'Gene', (59, 62)) ('SDH', 'Gene', '6390', (59, 62)) 109169 19522823 According with data from the "Freiburg-Warsaw registry" SDHB mutation carriers have a life time cancer risk of 76% with 50% penetrance by age 35 while SDHD carriers who inherited the mutation from their father seem to have a life time cancer risk of 100% with penetrance of 50% by age 31 and 86% by age 50. ('SDHB', 'Gene', '6390', (56, 60)) ('SDHB', 'Gene', (56, 60)) ('cancer', 'Disease', (235, 241)) ('cancer', 'Disease', 'MESH:D009369', (235, 241)) ('cancer', 'Phenotype', 'HP:0002664', (96, 102)) ('mutation', 'Var', (61, 69)) ('SDHD', 'Gene', (151, 155)) ('SDHD', 'Gene', '6392', (151, 155)) ('cancer', 'Disease', 'MESH:D009369', (96, 102)) ('cancer', 'Phenotype', 'HP:0002664', (235, 241)) ('cancer', 'Disease', (96, 102)) 109171 19522823 Slightly lower numbers have been reported for SDHB germline mutations by the "International SDH consortium" with an estimated penetrance of 29% by age 30 years and 45% by age 40 while for SDHD carriers the penetrance was similar to the one previously reported (48% by age 30 years and 73% by age 40). ('SDH', 'Gene', (92, 95)) ('SDHB', 'Gene', '6390', (46, 50)) ('SDHB', 'Gene', (46, 50)) ('SDH', 'Gene', (188, 191)) ('SDHD', 'Gene', '6392', (188, 192)) ('germline', 'Var', (51, 59)) ('SDHD', 'Gene', (188, 192)) ('SDH', 'Gene', '6390', (46, 49)) ('SDH', 'Gene', '6390', (92, 95)) ('SDH', 'Gene', (46, 49)) ('SDH', 'Gene', '6390', (188, 191)) 109172 19522823 Considering the tumour location, both studies recognized a prevalence of extra-adrenal abdominal paragangliomas in SDHB mutation carriers (50% of SDHB carriers vs 21% of SDHD in Neumann HP et al. ('tumour', 'Disease', 'MESH:D009369', (16, 22)) ('SDHB', 'Gene', '6390', (115, 119)) ('extra-adrenal abdominal paragangliomas', 'Disease', (73, 111)) ('SDHB', 'Gene', (146, 150)) ('SDHD', 'Gene', (170, 174)) ('tumour', 'Disease', (16, 22)) ('SDHB', 'Gene', (115, 119)) ('mutation', 'Var', (120, 128)) ('paraganglioma', 'Phenotype', 'HP:0002668', (97, 110)) ('extra-adrenal abdominal paragangliomas', 'Disease', 'MESH:D010236', (73, 111)) ('tumour', 'Phenotype', 'HP:0002664', (16, 22)) ('paragangliomas', 'Phenotype', 'HP:0002668', (97, 111)) ('SDHB', 'Gene', '6390', (146, 150)) ('SDHD', 'Gene', '6392', (170, 174)) 109173 19522823 - 67% of SDHB carriers vs 18% of SDHD in Benn DE et al.) ('SDHB', 'Gene', '6390', (9, 13)) ('carriers', 'Var', (14, 22)) ('SDHD', 'Gene', '6392', (33, 37)) ('SDHB', 'Gene', (9, 13)) ('SDHD', 'Gene', (33, 37)) 109174 19522823 and a prevalence of HNPGLs in SDHD mutation carriers (79% of SDHD carriers vs 31% of SDHB in Neumann HP et al. ('SDHD', 'Gene', '6392', (61, 65)) ('HNPGLs', 'Gene', (20, 26)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHD', 'Gene', (30, 34)) ('SDHD', 'Gene', (61, 65)) ('SDHB', 'Gene', (85, 89)) ('SDHD', 'Gene', '6392', (30, 34)) ('HNPGLs', 'Chemical', '-', (20, 26)) ('mutation', 'Var', (35, 43)) 109180 19522823 In SDHD mutation carriers, life at high altitude has been shown to increase the risk of developing multiple primary tumors and PHEOs. ('tumors', 'Disease', (116, 122)) ('tumors', 'Disease', 'MESH:D009369', (116, 122)) ('SDHD', 'Gene', '6392', (3, 7)) ('tumors', 'Phenotype', 'HP:0002664', (116, 122)) ('PHEOs', 'Chemical', '-', (127, 132)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('PHEOs', 'Disease', (127, 132)) ('mutation', 'Var', (8, 16)) ('SDHD', 'Gene', (3, 7)) 109181 19522823 An increased risk of PHEOs has also been recognized for truncating mutations. ('truncating mutations', 'Var', (56, 76)) ('PHEOs', 'Chemical', '-', (21, 26)) ('PHEOs', 'Disease', (21, 26)) 109182 19522823 In light of these data, the very low altitude in the Netherlands associated with the presence of recurrent missense mutations can explain the peculiarly high rates of SDHD germline mutations among sporadic cases of HNPGL (table 5) and the overall low risk of PHEO among Dutch carries. ('SDHD', 'Gene', (167, 171)) ('SDHD', 'Gene', '6392', (167, 171)) ('missense mutations', 'Var', (107, 125)) ('mutations', 'Var', (181, 190)) 109185 19522823 Even higher risk for malignancy (defined as the presence of metastases or histologically documented lymph-node invasion) in SDHB mutation carriers has been reported by other groups (71.4% by Amar L et al.) ('SDHB', 'Gene', (124, 128)) ('malignancy', 'Disease', 'MESH:D009369', (21, 31)) ('malignancy', 'Disease', (21, 31)) ('mutation', 'Var', (129, 137)) ('metastases', 'Disease', (60, 70)) ('metastases', 'Disease', 'MESH:D009362', (60, 70)) ('SDHB', 'Gene', '6390', (124, 128)) 109186 19522823 In malignant tumours the presence of an SDHB germline mutation seems to correlate with worse prognosis including a five-year probability of survival of 36% compared to 55% and a median time from presentation to first metastasis of 4 months compared to 20 months in the absence of SDHB mutations. ('SDHB', 'Gene', '6390', (40, 44)) ('SDHB', 'Gene', '6390', (280, 284)) ('tumour', 'Phenotype', 'HP:0002664', (13, 19)) ('SDHB', 'Gene', (280, 284)) ('tumours', 'Phenotype', 'HP:0002664', (13, 20)) ('SDHB', 'Gene', (40, 44)) ('malignant tumours', 'Disease', 'MESH:D009369', (3, 20)) ('malignant tumours', 'Disease', (3, 20)) ('presence', 'Var', (25, 33)) 109187 19522823 In carriers of SDHD mutations, development of malignant tumors has been reported occasionally giving a life time risk of malignancy between 2.5% and 7.7%. ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('malignant tumors', 'Disease', 'MESH:D018198', (46, 62)) ('malignancy', 'Disease', 'MESH:D009369', (121, 131)) ('SDHD', 'Gene', (15, 19)) ('SDHD', 'Gene', '6392', (15, 19)) ('malignancy', 'Disease', (121, 131)) ('tumors', 'Phenotype', 'HP:0002664', (56, 62)) ('mutations', 'Var', (20, 29)) ('malignant tumors', 'Disease', (46, 62)) 109189 19522823 In an attempt to define the risk for malignancy for each type of tumour, it is interesting to note that malignant disease has been reported for SDHB mutations in 12% of patients affected by HNPGL alone, in 35% of patients with only adrenal PHEO and in 48% of cases with only extra-adrenal PGLs. ('patients', 'Species', '9606', (169, 177)) ('mutations', 'Var', (149, 158)) ('tumour', 'Phenotype', 'HP:0002664', (65, 71)) ('reported', 'Reg', (131, 139)) ('SDHB', 'Gene', '6390', (144, 148)) ('malignant disease', 'Disease', 'MESH:D009369', (104, 121)) ('malignancy', 'Disease', 'MESH:D009369', (37, 47)) ('patients', 'Species', '9606', (213, 221)) ('tumour', 'Disease', 'MESH:D009369', (65, 71)) ('malignancy', 'Disease', (37, 47)) ('SDHB', 'Gene', (144, 148)) ('malignant disease', 'Disease', (104, 121)) ('tumour', 'Disease', (65, 71)) 109190 19522823 A similar trend for an increased risk of malignancy related to extra-adrenal PGL is present also in SDHD mutation carriers in whom malignant tumours are reported in 4% of patients with HNPGL alone, 6% of cases with only adrenal PHEO and 17% of patients with extra-adrenal PGLs. ('malignancy', 'Disease', 'MESH:D009369', (41, 51)) ('mutation', 'Var', (105, 113)) ('malignancy', 'Disease', (41, 51)) ('malignant tumours', 'Disease', (131, 148)) ('tumour', 'Phenotype', 'HP:0002664', (141, 147)) ('patients', 'Species', '9606', (171, 179)) ('SDHD', 'Gene', '6392', (100, 104)) ('tumours', 'Phenotype', 'HP:0002664', (141, 148)) ('patients', 'Species', '9606', (244, 252)) ('SDHD', 'Gene', (100, 104)) ('malignant tumours', 'Disease', 'MESH:D009369', (131, 148)) 109193 19522823 Loss of the normal allele was demonstrated in all GIST samples analysed (3 for SDHB, 2 for SDHC mutations). ('SDHC', 'Gene', (91, 95)) ('SDHC', 'Gene', '6391', (91, 95)) ('SDHB', 'Gene', '6390', (79, 83)) ('mutations', 'Var', (96, 105)) ('SDHB', 'Gene', (79, 83)) 109194 19522823 An additional family with extra-adrenal PGLs and a relative affected by GIST has been reported in association with an SDHB missense mutation. ('SDHB', 'Gene', '6390', (118, 122)) ('association', 'Reg', (98, 109)) ('SDHB', 'Gene', (118, 122)) ('missense mutation', 'Var', (123, 140)) 109195 19522823 The identification of SDHB germline mutations (c.713_716delTCTC) in two siblings affected by paraganglioma and clear cell renal carcinoma at 21 and 26 years of age suggested a possible involvement of SDH genes in renal tumorigenesis. ('paraganglioma', 'Disease', 'MESH:D010235', (93, 106)) ('tumor', 'Disease', (219, 224)) ('clear cell renal carcinoma', 'Disease', 'MESH:C538614', (111, 137)) ('SDH', 'Gene', '6390', (200, 203)) ('tumor', 'Disease', 'MESH:D009369', (219, 224)) ('c.713_716delTCTC', 'Var', (47, 63)) ('carcinoma', 'Phenotype', 'HP:0030731', (128, 137)) ('SDHB', 'Gene', '6390', (22, 26)) ('SDH', 'Gene', '6390', (22, 25)) ('paraganglioma', 'Phenotype', 'HP:0002668', (93, 106)) ('SDH', 'Gene', (200, 203)) ('involvement', 'Reg', (185, 196)) ('c.713_716delTCTC', 'Mutation', 'c.713_716delTCTC', (47, 63)) ('clear cell renal carcinoma', 'Phenotype', 'HP:0006770', (111, 137)) ('tumor', 'Phenotype', 'HP:0002664', (219, 224)) ('SDHB', 'Gene', (22, 26)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (122, 137)) ('SDH', 'Gene', (22, 25)) ('clear cell renal carcinoma', 'Disease', (111, 137)) ('paraganglioma', 'Disease', (93, 106)) 109196 19522823 Indeed both renal tumors showed losses of the normal allele as it was shown for another renal cancer (with apparent mixture of clear cells and cells with granular-eosinophilic cytoplasm) developed at 28 years of age by a carries of the SDHB p.Arg27X germline mutation. ('renal cancer', 'Disease', 'MESH:D007680', (88, 100)) ('renal tumors', 'Disease', (12, 24)) ('SDHB', 'Gene', '6390', (236, 240)) ('p.Arg27X', 'Mutation', 'rs74315369', (241, 249)) ('renal cancer', 'Phenotype', 'HP:0009726', (88, 100)) ('cancer', 'Phenotype', 'HP:0002664', (94, 100)) ('tumors', 'Phenotype', 'HP:0002664', (18, 24)) ('renal tumors', 'Phenotype', 'HP:0009726', (12, 24)) ('SDHB', 'Gene', (236, 240)) ('renal cancer', 'Disease', (88, 100)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) ('p.Arg27X', 'Var', (241, 249)) ('renal tumors', 'Disease', 'MESH:D007674', (12, 24)) 109197 19522823 The latter patient inherited the mutation from her mother affected by heart PGL at 55 years. ('patient', 'Species', '9606', (11, 18)) ('mutation', 'Var', (33, 41)) ('inherited', 'Reg', (19, 28)) 109198 19522823 However, no additional SDHB or SDHD mutations have been identified in a cohort of 95 renal cell tumours while a renal angiomiolipoma and a renal oncocytoma were found in two carriers of SDHB large deletions and a malignant papillary type II renal cell cancer in a carrier of an SDHB nonsense mutation. ('SDHB', 'Gene', '6390', (23, 27)) ('papillary type', 'Phenotype', 'HP:0007482', (223, 237)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (241, 258)) ('renal angiomiolipoma', 'Disease', (112, 132)) ('large deletions', 'Var', (191, 206)) ('renal angiomiolipoma', 'Disease', 'MESH:D007674', (112, 132)) ('SDHB', 'Gene', (278, 282)) ('renal oncocytoma', 'Disease', (139, 155)) ('tumours', 'Phenotype', 'HP:0002664', (96, 103)) ('SDHB', 'Gene', (23, 27)) ('SDHD', 'Gene', '6392', (31, 35)) ('SDHB', 'Gene', '6390', (186, 190)) ('malignant papillary type II renal cell cancer', 'Disease', (213, 258)) ('renal cell tumours', 'Disease', (85, 103)) ('tumour', 'Phenotype', 'HP:0002664', (96, 102)) ('malignant papillary type II renal cell cancer', 'Disease', 'MESH:C538614', (213, 258)) ('cancer', 'Phenotype', 'HP:0002664', (252, 258)) ('renal cell tumours', 'Disease', 'MESH:C538614', (85, 103)) ('SDHD', 'Gene', (31, 35)) ('renal oncocytoma', 'Disease', 'MESH:C537750', (139, 155)) ('SDHB', 'Gene', (186, 190)) ('renal oncocytoma', 'Phenotype', 'HP:0011798', (139, 155)) ('SDHB', 'Gene', '6390', (278, 282)) 109199 19522823 Recently, screening of 68 patients affected by familial or multiple/early-onset renal cell cancer for germline SDH mutations led to the identification of 3 additional carriers of SDHB mutations (p.Arg11His, p.Arg46X, p.Arg46Gln) thus confirming a possible increased risk for RCC limited to carriers of SDHB germline mutations. ('SDH', 'Gene', (179, 182)) ('p.Arg46Gln', 'Mutation', 'rs772551056', (217, 227)) ('p.Arg46X', 'Var', (207, 215)) ('RCC', 'Disease', 'MESH:C538614', (275, 278)) ('SDHB', 'Gene', (302, 306)) ('SDH', 'Gene', '6390', (302, 305)) ('renal cell cancer', 'Disease', 'MESH:C538614', (80, 97)) ('SDH', 'Gene', '6390', (111, 114)) ('renal cell cancer', 'Disease', (80, 97)) ('SDHB', 'Gene', '6390', (179, 183)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (80, 97)) ('p.Arg46Gln', 'Var', (217, 227)) ('p.Arg11His', 'Mutation', 'rs111430410', (195, 205)) ('SDHB', 'Gene', (179, 183)) ('SDH', 'Gene', (302, 305)) ('p.Arg11His', 'Var', (195, 205)) ('SDH', 'Gene', (111, 114)) ('SDH', 'Gene', '6390', (179, 182)) ('p.Arg46X', 'Mutation', 'rs74315370', (207, 215)) ('patients', 'Species', '9606', (26, 34)) ('cancer', 'Phenotype', 'HP:0002664', (91, 97)) ('RCC', 'Disease', (275, 278)) ('SDHB', 'Gene', '6390', (302, 306)) 109200 19522823 A unique case of testicular seminoma has been reported among carriers of SDHD mutations (p.Trp43X); the causative role of the germline mutation is suggested by the loss of the normal allele in this tumour. ('testicular seminoma', 'Disease', (17, 36)) ('tumour', 'Disease', (198, 204)) ('mutations', 'Var', (78, 87)) ('tumour', 'Phenotype', 'HP:0002664', (198, 204)) ('p.Trp43X', 'Mutation', 'rs104894308', (89, 97)) ('SDHD', 'Gene', (73, 77)) ('testicular seminoma', 'Phenotype', 'HP:0100617', (17, 36)) ('tumour', 'Disease', 'MESH:D009369', (198, 204)) ('SDHD', 'Gene', '6392', (73, 77)) ('testicular seminoma', 'Disease', 'MESH:D018239', (17, 36)) 109201 19522823 Interstingly, both RCC and testicular tumours have been reported in carriers of FH germline mutations, another gene with tumor suppressor function encoded by a mitochondrial enzyme (fumarate hydratase or fumarase). ('fumarase', 'Gene', (204, 212)) ('tumor', 'Phenotype', 'HP:0002664', (121, 126)) ('tumour', 'Phenotype', 'HP:0002664', (38, 44)) ('fumarate hydratase', 'Gene', '2271', (182, 200)) ('testicular tumours', 'Disease', 'MESH:D013736', (27, 45)) ('tumor', 'Disease', (121, 126)) ('testicular tumours', 'Disease', (27, 45)) ('RCC', 'Disease', (19, 22)) ('mutations', 'Var', (92, 101)) ('RCC', 'Disease', 'MESH:C538614', (19, 22)) ('FH', 'Disease', 'MESH:D006938', (80, 82)) ('tumours', 'Phenotype', 'HP:0002664', (38, 45)) ('fumarate hydratase', 'Gene', (182, 200)) ('fumarase', 'Gene', '2271', (204, 212)) ('tumor', 'Disease', 'MESH:D009369', (121, 126)) 109202 19522823 The prevalent manifestations of FH mutations are cutaneous and uterine leiomyomas, RCC (manly papillary type II); testicular (Leydig cell tumours) and adrenocortical tumors can also occur. ('Leydig cell tumours', 'Disease', (126, 145)) ('RCC', 'Disease', 'MESH:C538614', (83, 86)) ('RCC', 'Disease', (83, 86)) ('adrenocortical tumors', 'Disease', 'MESH:D018268', (151, 172)) ('Leydig cell tumours', 'Disease', 'MESH:D007984', (126, 145)) ('cutaneous and uterine leiomyomas', 'Phenotype', 'HP:0007620', (49, 81)) ('uterine leiomyomas', 'Phenotype', 'HP:0000131', (63, 81)) ('tumor', 'Phenotype', 'HP:0002664', (166, 171)) ('leiomyomas', 'Disease', 'MESH:D007889', (71, 81)) ('tumour', 'Phenotype', 'HP:0002664', (138, 144)) ('tumours', 'Phenotype', 'HP:0002664', (138, 145)) ('leiomyomas', 'Disease', (71, 81)) ('adrenocortical tumors', 'Disease', (151, 172)) ('tumors', 'Phenotype', 'HP:0002664', (166, 172)) ('papillary type', 'Phenotype', 'HP:0007482', (94, 108)) ('FH', 'Disease', 'MESH:D006938', (32, 34)) ('mutations', 'Var', (35, 44)) 109203 19522823 Finally, it has been suggested that germline SDHD mutations could be responsible for hyperplasia of thyroid C-cells secreting calcitonin. ('hyperplasia', 'Disease', 'MESH:D006965', (85, 96)) ('hyperplasia of thyroid', 'Phenotype', 'HP:0008249', (85, 107)) ('mutations', 'Var', (50, 59)) ('hyperplasia', 'Disease', (85, 96)) ('SDHD', 'Gene', '6392', (45, 49)) ('SDHD', 'Gene', (45, 49)) ('responsible', 'Reg', (69, 80)) 109204 19522823 However, the mutation identified in a family with four members affected by hypercalcitoninemia (p.His50Arg) is indeed a common polymorphism. ('hypercalcitoninemia', 'Disease', (75, 94)) ('hypercalcitoninemia', 'Disease', 'None', (75, 94)) ('p.His50Arg', 'Mutation', 'rs11214077', (96, 106)) ('p.His50Arg', 'Var', (96, 106)) 109205 19522823 Germline SDHB and SDHD variants have been identified in 10 patient out of 74 (13.5%) affected by Cowden-like clinical manifestations (breast, thyroid, uterine benign and malignant diseases); although some of these sequence changes are considered polymorphisms (SDHB p.Ser163Pro, SDHD p.Gly12Ser and p.His50Arg), they appear to function as low penetrance alleles. ('SDHB', 'Gene', (261, 265)) ('SDHB', 'Gene', '6390', (9, 13)) ('p.Ser163Pro', 'Var', (266, 277)) ('p.His50Arg', 'Mutation', 'rs11214077', (299, 309)) ('p.Gly12Ser', 'Mutation', 'rs34677591', (284, 294)) ('SDHB', 'Gene', (9, 13)) ('patient', 'Species', '9606', (59, 66)) ('SDHD', 'Gene', '6392', (279, 283)) ('p.Gly12Ser', 'Var', (284, 294)) ('SDHD', 'Gene', '6392', (18, 22)) ('p.Ser163Pro', 'Mutation', 'rs33927012', (266, 277)) ('p.His50Arg', 'Var', (299, 309)) ('SDHB', 'Gene', '6390', (261, 265)) ('SDHD', 'Gene', (279, 283)) ('malignant diseases', 'Disease', 'MESH:D009369', (170, 188)) ('SDHD', 'Gene', (18, 22)) ('malignant diseases', 'Disease', (170, 188)) 109206 19522823 It remains unclear if SDH mutations can be associated with other tumours that are occasionally found in affected carriers or their relatives such as papillary thyroid cancers, adrenal neuroblastoma, pituitary adenoma, bronchial carcinoid, ependymoma, melanoma, bone and soft tissue sarcoma, B-cell lymphoma and colon cancer. ('pituitary adenoma', 'Disease', 'MESH:D010911', (199, 216)) ('papillary thyroid cancers', 'Phenotype', 'HP:0002895', (149, 174)) ('bronchial carcinoid', 'Disease', 'MESH:D002276', (218, 237)) ('ependymoma', 'Phenotype', 'HP:0002888', (239, 249)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (199, 216)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (184, 197)) ('mutations', 'Var', (26, 35)) ('B-cell lymphoma', 'Phenotype', 'HP:0012191', (291, 306)) ('cancer', 'Phenotype', 'HP:0002664', (167, 173)) ('pituitary adenoma', 'Disease', (199, 216)) ('tumours', 'Disease', (65, 72)) ('soft tissue sarcoma', 'Phenotype', 'HP:0030448', (270, 289)) ('colon cancer', 'Phenotype', 'HP:0003003', (311, 323)) ('adrenal neuroblastoma', 'Disease', (176, 197)) ('cancers', 'Phenotype', 'HP:0002664', (167, 174)) ('bronchial carcinoid', 'Disease', (218, 237)) ('B-cell lymphoma', 'Disease', (291, 306)) ('SDH', 'Gene', '6390', (22, 25)) ('ependymoma', 'Disease', 'MESH:D004806', (239, 249)) ('tumours', 'Disease', 'MESH:D009369', (65, 72)) ('papillary thyroid cancers', 'Disease', 'MESH:D000077273', (149, 174)) ('adrenal neuroblastoma', 'Disease', 'MESH:D009447', (176, 197)) ('melanoma', 'Phenotype', 'HP:0002861', (251, 259)) ('tumours', 'Phenotype', 'HP:0002664', (65, 72)) ('melanoma', 'Disease', (251, 259)) ('sarcoma', 'Disease', 'MESH:D012509', (282, 289)) ('melanoma', 'Disease', 'MESH:D008545', (251, 259)) ('papillary thyroid cancers', 'Disease', (149, 174)) ('sarcoma', 'Disease', (282, 289)) ('tumour', 'Phenotype', 'HP:0002664', (65, 71)) ('cancer', 'Phenotype', 'HP:0002664', (317, 323)) ('colon cancer', 'Disease', 'MESH:D015179', (311, 323)) ('associated', 'Reg', (43, 53)) ('SDH', 'Gene', (22, 25)) ('lymphoma', 'Phenotype', 'HP:0002665', (298, 306)) ('sarcoma', 'Phenotype', 'HP:0100242', (282, 289)) ('B-cell lymphoma', 'Disease', 'MESH:D016393', (291, 306)) ('colon cancer', 'Disease', (311, 323)) ('ependymoma', 'Disease', (239, 249)) ('carcinoid', 'Phenotype', 'HP:0100570', (228, 237)) 109207 19522823 Germline loss of function mutations associated with frequent somatic deletions of the wild type (wt) allele suggest that SDH genes behave as classical tumour suppressor genes (TSG) as they need two events for inactivation. ('tumour', 'Phenotype', 'HP:0002664', (151, 157)) ('SDH', 'Gene', '6390', (121, 124)) ('mutations', 'Var', (26, 35)) ('SDH', 'Gene', (121, 124)) ('tumour', 'Disease', 'MESH:D009369', (151, 157)) ('tumour', 'Disease', (151, 157)) ('loss of function', 'NegReg', (9, 25)) 109210 19522823 However, even by simple LOH analysis or allelic-imbalance, somatic deletion of the wt allele is present in at least 78.5% of SDHD-related tumours (33/45 HNPGLs and 11/11 adrenal or extra-adrenal PHEOs, 60% of SDHB-related tumours (15/25 adrenal or extra-adrenal PHEOs) and in all 5 tumours studied from carriers of SDHC germline mutations. ('tumours', 'Disease', (282, 289)) ('tumour', 'Phenotype', 'HP:0002664', (282, 288)) ('tumours', 'Phenotype', 'HP:0002664', (138, 145)) ('tumours', 'Phenotype', 'HP:0002664', (282, 289)) ('tumours', 'Disease', 'MESH:D009369', (282, 289)) ('tumours', 'Disease', 'MESH:D009369', (138, 145)) ('imbalance', 'Phenotype', 'HP:0002172', (48, 57)) ('carriers', 'Reg', (303, 311)) ('SDHC', 'Gene', (315, 319)) ('HNPGLs', 'Chemical', '-', (153, 159)) ('PHEOs', 'Chemical', '-', (195, 200)) ('tumour', 'Phenotype', 'HP:0002664', (138, 144)) ('SDHD', 'Gene', '6392', (125, 129)) ('SDHB', 'Gene', '6390', (209, 213)) ('tumours', 'Disease', (222, 229)) ('tumour', 'Phenotype', 'HP:0002664', (222, 228)) ('SDHD', 'Gene', (125, 129)) ('tumours', 'Phenotype', 'HP:0002664', (222, 229)) ('SDHC', 'Gene', '6391', (315, 319)) ('deletion', 'Var', (67, 75)) ('PHEOs', 'Chemical', '-', (262, 267)) ('tumours', 'Disease', 'MESH:D009369', (222, 229)) ('SDHB', 'Gene', (209, 213)) ('tumours', 'Disease', (138, 145)) 109211 19522823 The somatic deletion of the wt SDH allele seems therefore the preferential second hit and this observation can suggest the need of concomitant loss of neighbouring TSG/s. ('deletion', 'Var', (12, 20)) ('SDH', 'Gene', (31, 34)) ('SDH', 'Gene', '6390', (31, 34)) 109212 19522823 Indeed, SDHD germline mutations seem invariably associated with somatic loss of the entire chromosome 11 implying the concomitant loss of maternally-expressed TSGs on 11p15.5 and perhaps other TSGs on the long and the short arms of the same chromosome. ('loss', 'NegReg', (72, 76)) ('SDHD', 'Gene', '6392', (8, 12)) ('short arm', 'Phenotype', 'HP:0009824', (218, 227)) ('associated', 'Reg', (48, 58)) ('SDHD', 'Gene', (8, 12)) ('mutations', 'Var', (22, 31)) ('loss', 'NegReg', (130, 134)) ('short arms', 'Phenotype', 'HP:0009824', (218, 228)) 109214 19522823 the opposite somatic alteration) have been shown in 36% of extra-adrenal PHEOs and in 25% of malignant PGLs which are relatively infrequent clinical manifestations in SDHD mutation carriers. ('extra-adrenal PHEOs', 'Disease', (59, 78)) ('SDHD', 'Gene', '6392', (167, 171)) ('mutation', 'Var', (172, 180)) ('SDHD', 'Gene', (167, 171)) ('PHEOs', 'Chemical', '-', (73, 78)) 109216 19522823 In the case of SDHB germline mutations, deletions of the short arm of chromosome 1 can be associated with the concomitant loss of TSGs located in 1p36.2-1p36.3 (the neuroblastoma-TSG region) or even more centromeric such as 1cen-p31 and 1p32.1-1p32.3 (the PHEOs-TSG regions). ('PHEOs', 'Chemical', '-', (256, 261)) ('SDHB', 'Gene', '6390', (15, 19)) ('deletions', 'Var', (40, 49)) ('SDHB', 'Gene', (15, 19)) ('short arm', 'Phenotype', 'HP:0009824', (57, 66)) ('loss', 'NegReg', (122, 126)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (165, 178)) ('TSGs', 'MPA', (130, 134)) 109218 19522823 In adrenal or extra-adrenal PHEOs loss or gain of genomic material on chromosome 1q or 5p are very rare events: the few aberrations reported (in malignant tumours mainly) included whole chromosome 1 monosomy or chromosome 5 trisomy. ('malignant tumours', 'Disease', (145, 162)) ('chromosome', 'Var', (211, 221)) ('tumour', 'Phenotype', 'HP:0002664', (155, 161)) ('extra-adrenal PHEOs loss', 'Disease', 'MESH:D010236', (14, 38)) ('tumours', 'Phenotype', 'HP:0002664', (155, 162)) ('whole chromosome', 'Var', (180, 196)) ('extra-adrenal PHEOs loss', 'Disease', (14, 38)) ('malignant tumours', 'Disease', 'MESH:D009369', (145, 162)) 109222 19522823 Gimenez-Roqueplo and colleagues first studied the biological effect of a loss of function SDHD germline mutation (p.Arg22X): a complete loss of the maternal wt allele was found in the related extra-adrenal PGL of the mediastinum where both functions of SDH were completely abolished, i.e. ('SDHD', 'Gene', (90, 94)) ('SDH', 'Gene', (253, 256)) ('SDHD', 'Gene', '6392', (90, 94)) ('p.Arg22X', 'Mutation', 'rs104894306', (114, 122)) ('SDH', 'Gene', '6390', (90, 93)) ('SDH', 'Gene', (90, 93)) ('SDH', 'Gene', '6390', (253, 256)) ('p.Arg22X', 'Var', (114, 122)) 109227 19522823 The same group studied the biological effect of a missense SDHB germline mutation (p.Arg46Gln) in a malignant PHEO with somatic terminal deletion of 1p. ('p.Arg46Gln', 'Var', (83, 93)) ('SDHB', 'Gene', '6390', (59, 63)) ('missense', 'Var', (50, 58)) ('SDHB', 'Gene', (59, 63)) ('p.Arg46Gln', 'Mutation', 'rs772551056', (83, 93)) 109229 19522823 Moreover, a complete and selective loss of mitochondrial complex II enzymatic activity was confirmed in additional 7 tumours (extra-adrenal and/or malignant PHEOs) from carriers of SDHB germline mutations (frame-shift and missense) with somatic loss of 1pter-1p34.3. ('tumours', 'Disease', (117, 124)) ('PHEOs', 'Chemical', '-', (157, 162)) ('loss', 'NegReg', (35, 39)) ('loss', 'NegReg', (245, 249)) ('tumour', 'Phenotype', 'HP:0002664', (117, 123)) ('tumours', 'Disease', 'MESH:D009369', (117, 124)) ('SDHB', 'Gene', '6390', (181, 185)) ('frame-shift', 'Var', (206, 217)) ('SDHB', 'Gene', (181, 185)) ('tumours', 'Phenotype', 'HP:0002664', (117, 124)) ('mitochondrial complex II', 'Enzyme', (43, 67)) ('missense', 'Var', (222, 230)) 109230 19522823 Even in non-malignant tumours, the presence of an SDHB germline mutation was associated with changes in vascular morphology (arcs, networks and parallel structures). ('presence', 'Var', (35, 43)) ('tumours', 'Phenotype', 'HP:0002664', (22, 29)) ('malignant tumours', 'Disease', 'MESH:D009369', (12, 29)) ('SDHB', 'Gene', (50, 54)) ('networks', 'CPA', (131, 139)) ('malignant tumours', 'Disease', (12, 29)) ('tumour', 'Phenotype', 'HP:0002664', (22, 28)) ('changes', 'Reg', (93, 100)) ('vascular morphology', 'CPA', (104, 123)) ('SDHB', 'Gene', '6390', (50, 54)) 109231 19522823 who studied the SDH enzymatic activity in 22 HNPGLs from Dutch patients, 12 from carriers of SDHD and SDHB germline mutations, 2 from the PGL2 linked family and 8 sporadic. ('SDHD', 'Gene', (93, 97)) ('SDH', 'Gene', (102, 105)) ('SDH', 'Gene', '6390', (93, 96)) ('SDHD', 'Gene', '6392', (93, 97)) ('SDHB', 'Gene', '6390', (102, 106)) ('SDH', 'Gene', '6390', (16, 19)) ('mutations', 'Var', (116, 125)) ('PGL2', 'Gene', (138, 142)) ('SDHB', 'Gene', (102, 106)) ('PGL2', 'Gene', '54949', (138, 142)) ('patients', 'Species', '9606', (63, 71)) ('SDH', 'Gene', (93, 96)) ('HNPGLs', 'Chemical', '-', (45, 51)) ('SDH', 'Gene', (16, 19)) ('SDH', 'Gene', '6390', (102, 105)) 109234 19522823 Interestingly, unlike sporadic PHEOs, most of sporadic HNPGLs (75%) were negative for SDH enzymatic activity as well, thus suggesting that impairment of mitochondrial complex II could be a common feature in the tumourigenesis of chemoreceptor PGLs. ('tumour', 'Disease', 'MESH:D009369', (211, 217)) ('SDH', 'Gene', '6390', (86, 89)) ('tumour', 'Disease', (211, 217)) ('SDH', 'Gene', (86, 89)) ('PHEOs', 'Chemical', '-', (31, 36)) ('impairment', 'Var', (139, 149)) ('mitochondrial complex II', 'Enzyme', (153, 177)) ('tumour', 'Phenotype', 'HP:0002664', (211, 217)) ('HNPGLs', 'Chemical', '-', (55, 61)) 109236 19522823 Finally, a severe decrease in SDH activity was demonstrated also for a germline SDHC mutations in a sample of GIST tumour with loss of the wt allele. ('activity', 'MPA', (34, 42)) ('SDH', 'Gene', (30, 33)) ('GIST tumour', 'Disease', 'MESH:D046152', (110, 121)) ('SDHC', 'Gene', '6391', (80, 84)) ('tumour', 'Phenotype', 'HP:0002664', (115, 121)) ('SDH', 'Gene', '6390', (80, 83)) ('mutations', 'Var', (85, 94)) ('SDHC', 'Gene', (80, 84)) ('decrease', 'NegReg', (18, 26)) ('SDH', 'Gene', '6390', (30, 33)) ('GIST tumour', 'Disease', (110, 121)) ('SDH', 'Gene', (80, 83)) 109237 19522823 These data support the notion that, whenever an SDH subunit gene is mutated, SDH enzymatic activity is strongly compromised. ('SDH', 'Gene', (77, 80)) ('compromised', 'NegReg', (112, 123)) ('SDH', 'Gene', '6390', (48, 51)) ('SDH', 'Gene', '6390', (77, 80)) ('SDH', 'Gene', (48, 51)) ('mutated', 'Var', (68, 75)) 109238 19522823 To further investigate the metabolic consequences of SDH deficiency, Pollard and colleagues analysed frozen PGLs from carriers of two SDHB missense mutations (p.Ser100Pro and p.Ile127Ser) with somatic loss of the entire wt 1p or whole 1 chromosome. ('loss', 'NegReg', (201, 205)) ('SDH deficiency', 'Disease', (53, 67)) ('p.Ile127Ser', 'Var', (175, 186)) ('p.Ile127Ser', 'Mutation', 'rs786201095', (175, 186)) ('SDH deficiency', 'Disease', 'MESH:D007153', (53, 67)) ('p.Ser100Pro', 'Mutation', 'p.S100P', (159, 170)) ('SDHB', 'Gene', '6390', (134, 138)) ('SDHB', 'Gene', (134, 138)) ('p.Ser100Pro', 'Var', (159, 170)) 109239 19522823 Compared to sporadic tumours, SDH deficient PGLs showed gross accumulation of succinate, positive succinate to fumurate ratio and increased expression of HIF1alpha and VEGF with high density of micro-vessels. ('tumour', 'Phenotype', 'HP:0002664', (21, 27)) ('HIF1alpha', 'Gene', '3091', (154, 163)) ('HIF1alpha', 'Gene', (154, 163)) ('succinate', 'Chemical', 'MESH:D019802', (78, 87)) ('sporadic tumours', 'Disease', 'MESH:D009369', (12, 28)) ('fumurate', 'Chemical', '-', (111, 119)) ('increased', 'PosReg', (130, 139)) ('SDH', 'Gene', '6390', (30, 33)) ('sporadic tumours', 'Disease', (12, 28)) ('succinate', 'MPA', (78, 87)) ('succinate to fumurate ratio', 'MPA', (98, 125)) ('VEGF', 'Gene', '7422', (168, 172)) ('deficient', 'Var', (34, 43)) ('positive', 'PosReg', (89, 97)) ('VEGF', 'Gene', (168, 172)) ('SDH', 'Gene', (30, 33)) ('expression', 'MPA', (140, 150)) ('tumours', 'Phenotype', 'HP:0002664', (21, 28)) ('accumulation', 'PosReg', (62, 74)) ('succinate', 'Chemical', 'MESH:D019802', (98, 107)) 109240 19522823 In vitro inactivation of SDH activity and succinate accumulation was shown to inhibit prolyl-hydroxylation of HIF1alpha and HIF2alpha which is an essential step for its degradation through the complex VHL-ElonginD-C-Cul2. ('succinate', 'Chemical', 'MESH:D019802', (42, 51)) ('HIF2alpha', 'Gene', (124, 133)) ('prolyl-hydroxylation', 'MPA', (86, 106)) ('SDH', 'Gene', (25, 28)) ('VHL-ElonginD-C-Cul2', 'Disease', (201, 220)) ('prolyl', 'Chemical', '-', (86, 92)) ('inhibit', 'NegReg', (78, 85)) ('inactivation', 'Var', (9, 21)) ('HIF2alpha', 'Gene', '2034', (124, 133)) ('VHL-ElonginD-C-Cul2', 'Disease', 'MESH:D006623', (201, 220)) ('HIF1alpha', 'Gene', (110, 119)) ('HIF1alpha', 'Gene', '3091', (110, 119)) ('SDH', 'Gene', '6390', (25, 28)) 109246 19522823 Thus, inhibition of EglN3-PHD3 consequent to succinate accumulation can promote cell survival and proliferation also through a HIF-independent pathway. ('succinate', 'Chemical', 'MESH:D019802', (45, 54)) ('EglN3', 'Gene', (20, 25)) ('PHD3', 'Gene', '112399', (26, 30)) ('PHD3', 'Gene', (26, 30)) ('cell survival', 'CPA', (80, 93)) ('promote', 'PosReg', (72, 79)) ('inhibition', 'Var', (6, 16)) ('succinate accumulation', 'MPA', (45, 67)) ('EglN3', 'Gene', '112399', (20, 25)) 109248 19522823 In a cohort of more than 480 tumour sample analysed (139 HNPGLs, 321 adrenal/extra-adrenal PHEO, 22 PGLs of the cauda equina, table 9), just two SDHB (p.Arg217Cys in a carotid body pgl, p.Ser100Phe in an extra-adrenal PGL) and three SDHD (p.81Leu in a sporadic PHEO, p.Met1Val in a sporadic HNPGL and p.Tyr114Cys in a jugular PGL) somatic mutations have been reported, all associated with LOH of the wt allele. ('tumour', 'Disease', (29, 35)) ('SDHB', 'Gene', (145, 149)) ('p.Ser100Phe', 'Var', (186, 197)) ('cauda equina', 'Phenotype', 'HP:0001762', (112, 124)) ('SDHD', 'Gene', (233, 237)) ('associated', 'Reg', (373, 383)) ('HNPGLs', 'Chemical', '-', (57, 63)) ('cauda equina', 'Disease', 'MESH:D011128', (112, 124)) ('p.Met1Val', 'Mutation', 'rs917411291', (267, 276)) ('p.Met1Val', 'Var', (267, 276)) ('p.Ser100Phe', 'Mutation', 'rs121917755', (186, 197)) ('p.Tyr114Cys', 'Mutation', 'rs104894304', (301, 312)) ('p.Arg217Cys', 'Var', (151, 162)) ('SDHB', 'Gene', '6390', (145, 149)) ('cauda equina', 'Disease', (112, 124)) ('p.Arg217Cys', 'Mutation', 'rs200245469', (151, 162)) ('tumour', 'Phenotype', 'HP:0002664', (29, 35)) ('LOH', 'Disease', (389, 392)) ('SDHD', 'Gene', '6392', (233, 237)) ('tumour', 'Disease', 'MESH:D009369', (29, 35)) 109252 19522823 However, somatic deletion of SDHD in those tumours characterized by LOH at 11q23 (table 10) (group 2B neuroblastomas, midgut carcinoids, neuroendocrine tumours, PHEOs from carriers of VHL missense mutations) could suggest a role in tumourigenesis through a mechanism of haploinsufficiency, supported by the consistent reduction of transcript levels found in some tumours. ('tumour', 'Phenotype', 'HP:0002664', (363, 369)) ('transcript levels', 'MPA', (331, 348)) ('neuroblastomas', 'Phenotype', 'HP:0003006', (102, 116)) ('tumour', 'Disease', 'MESH:D009369', (363, 369)) ('tumour', 'Disease', (363, 369)) ('tumours', 'Disease', (43, 50)) ('neuroblastomas', 'Disease', (102, 116)) ('neuroendocrine tumours', 'Disease', 'MESH:D018358', (137, 159)) ('tumour', 'Phenotype', 'HP:0002664', (43, 49)) ('tumour', 'Disease', 'MESH:D009369', (43, 49)) ('neuroendocrine tumours', 'Disease', (137, 159)) ('tumours', 'Phenotype', 'HP:0002664', (43, 50)) ('tumours', 'Disease', (152, 159)) ('neuroblastomas', 'Disease', 'MESH:D009447', (102, 116)) ('tumour', 'Disease', (43, 49)) ('tumours', 'Disease', 'MESH:D009369', (43, 50)) ('carcinoids', 'Phenotype', 'HP:0100570', (125, 135)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (102, 115)) ('tumours', 'Phenotype', 'HP:0002664', (152, 159)) ('VHL', 'Disease', (184, 187)) ('tumour', 'Phenotype', 'HP:0002664', (232, 238)) ('tumour', 'Disease', 'MESH:D009369', (232, 238)) ('SDHD', 'Gene', '6392', (29, 33)) ('PHEOs', 'Chemical', '-', (161, 166)) ('tumours', 'Disease', 'MESH:D009369', (152, 159)) ('haploinsufficiency', 'Disease', 'MESH:D058495', (270, 288)) ('reduction', 'NegReg', (318, 327)) ('tumour', 'Disease', (232, 238)) ('endocrine tumour', 'Phenotype', 'HP:0100568', (142, 158)) ('tumours', 'Disease', (363, 370)) ('haploinsufficiency', 'Disease', (270, 288)) ('tumour', 'Phenotype', 'HP:0002664', (152, 158)) ('tumour', 'Disease', 'MESH:D009369', (152, 158)) ('tumours', 'Phenotype', 'HP:0002664', (363, 370)) ('tumour', 'Disease', (152, 158)) ('SDHD', 'Gene', (29, 33)) ('carcinoid', 'Phenotype', 'HP:0100570', (125, 134)) ('tumours', 'Disease', 'MESH:D009369', (363, 370)) ('deletion', 'Var', (17, 25)) ('VHL', 'Disease', 'MESH:D006623', (184, 187)) 109253 19522823 A marked reduction of SDHB expression has been found in VHL-related PHEOs which are characterized by frequent loss of 1p as well and the SDHB haploinsufficiency can be responsible for the activation of the hypoxia-angiogenesis pathway even in those tumours with VHL type 2c mutations which seems unable to interfere with HIF degradation. ('HIF degradation', 'Disease', 'MESH:D055959', (321, 336)) ('tumours', 'Disease', (249, 256)) ('expression', 'MPA', (27, 37)) ('HIF degradation', 'Disease', (321, 336)) ('VHL', 'Disease', 'MESH:D006623', (262, 265)) ('VHL', 'Disease', 'MESH:D006623', (56, 59)) ('tumours', 'Phenotype', 'HP:0002664', (249, 256)) ('tumours', 'Disease', 'MESH:D009369', (249, 256)) ('SDHB', 'Gene', '6390', (22, 26)) ('hypoxia', 'Disease', (206, 213)) ('SDHB haploinsufficiency', 'Disease', (137, 160)) ('tumour', 'Phenotype', 'HP:0002664', (249, 255)) ('PHEOs', 'Chemical', '-', (68, 73)) ('reduction', 'NegReg', (9, 18)) ('hypoxia', 'Disease', 'MESH:D000860', (206, 213)) ('SDHB', 'Gene', '6390', (137, 141)) ('SDHB', 'Gene', (22, 26)) ('VHL', 'Disease', (56, 59)) ('VHL', 'Disease', (262, 265)) ('SDHB haploinsufficiency', 'Disease', 'MESH:D058495', (137, 160)) ('SDHB', 'Gene', (137, 141)) ('activation', 'PosReg', (188, 198)) ('mutations', 'Var', (274, 283)) 109260 19522823 Giving the bi-allelic expression of SDHD, that argues against its maternal imprinting, and the complete loss of SDH enzymatic activity whenever one of its subunits is mutated, a possible explanation of the phenotypic variability in paraganglioma-pheochromocytoma syndrome can be the size and location of the somatic deletions of the normal allele which may compromise the function of other TSGs located nearby in the form of cis or even trans effects. ('paraganglioma', 'Phenotype', 'HP:0002668', (232, 245)) ('SDH', 'Gene', (112, 115)) ('SDHD', 'Gene', (36, 40)) ('SDHD', 'Gene', '6392', (36, 40)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (246, 262)) ('paraganglioma-pheochromocytoma syndrome', 'Disease', (232, 271)) ('function', 'MPA', (372, 380)) ('SDH', 'Gene', '6390', (36, 39)) ('paraganglioma-pheochromocytoma syndrome', 'Disease', 'MESH:D010673', (232, 271)) ('deletions', 'Var', (316, 325)) ('SDH', 'Gene', '6390', (112, 115)) ('SDH', 'Gene', (36, 39)) 109300 20047692 These lesions can be localized using very specific radiotracers such as 131I or 123I metaiodobenzylguanidine or 18F-DOPA, which are actively transported into neurosecretory granules of catecholamine-producing cells. ('metaiodobenzylguanidine', 'Chemical', 'MESH:D019797', (85, 108)) ('catecholamine', 'Chemical', 'MESH:D002395', (185, 198)) ('131I', 'Chemical', 'MESH:C000614965', (72, 76)) ('18F-DOPA', 'Chemical', 'MESH:C043437', (112, 120)) ('131I', 'Var', (72, 76)) ('123I', 'Var', (80, 84)) 109355 33725899 The maximum standardized uptake value (SUVmax) of 18F-FDG PET/CT ranged from 2.3 to 6.9. ('18F-FDG', 'Var', (50, 57)) ('standardized uptake value', 'MPA', (12, 37)) ('18F-FDG', 'Chemical', 'MESH:D019788', (50, 57)) 109362 33725899 In addition, 3 patients had mildly elevated level of tumor markers (CA727, CA125, and CA199 with AFP, respectively). ('CA125', 'Gene', '94025', (75, 80)) ('AFP', 'Gene', '174', (97, 100)) ('patients', 'Species', '9606', (15, 23)) ('tumor', 'Disease', 'MESH:D009369', (53, 58)) ('tumor', 'Phenotype', 'HP:0002664', (53, 58)) ('CA125', 'Gene', (75, 80)) ('CA727', 'Var', (68, 73)) ('tumor', 'Disease', (53, 58)) ('elevated', 'PosReg', (35, 43)) ('AFP', 'Gene', (97, 100)) ('CA199', 'Var', (86, 91)) 109378 33725899 For MRI, UCD lesions are usually isointense or hyperintense relative to skeletal muscle on T1WI and hyperintense on T2WI. ('UCD lesions', 'Disease', (9, 20)) ('UCD lesions', 'Disease', 'MESH:D001768', (9, 20)) ('hyperintense', 'Var', (100, 112)) ('hyperintense', 'MPA', (47, 59)) 109386 33725899 Somatostatin receptor imaging and 131I-MIBG are usually used for pheochromocytoma/paraganglioma diagnosis. ('paraganglioma', 'Phenotype', 'HP:0002668', (82, 95)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (65, 81)) ('pheochromocytoma/paraganglioma', 'Disease', (65, 95)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (65, 95)) ('131I-MIBG', 'Var', (34, 43)) ('MIBG', 'Chemical', 'MESH:D019797', (39, 43)) 109424 33604380 In particular, evaluation of the mutations in immune cells is capable of predicting the outcome of patients with cancerous tumors. ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('cancerous tumors', 'Disease', 'MESH:D009369', (113, 129)) ('mutations', 'Var', (33, 42)) ('patients', 'Species', '9606', (99, 107)) ('cancerous tumors', 'Disease', (113, 129)) ('cancer', 'Phenotype', 'HP:0002664', (113, 119)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) 109434 33604380 We discovered that the related immune cell infiltration signatures were differently expressed between low and high CDCA3 expression groups. ('CDCA3', 'Gene', (115, 120)) ('high', 'Var', (110, 114)) ('CDCA3', 'Gene', '83461', (115, 120)) 109435 33604380 We also found that the higher proportion of CD8+ T cells, CD4+ T cells, and B cells appeared in the high CDCA3 expression group. ('CD8', 'Gene', (44, 47)) ('CD8', 'Gene', '925', (44, 47)) ('CD4', 'Gene', '920', (58, 61)) ('CDCA3', 'Gene', '83461', (105, 110)) ('high', 'Var', (100, 104)) ('CDCA3', 'Gene', (105, 110)) ('CD4', 'Gene', (58, 61)) 109436 33604380 Our data suggested that the high CDCA3 expression promoted the infiltration of T cells and exhausted these cells, and the patients with high CDCA3 expression might have poorer outcomes by analyzing the information of HCC patients obtained from The Cancer Genome Atlas (TCGA) database. ('CDCA3', 'Gene', '83461', (141, 146)) ('patients', 'Species', '9606', (221, 229)) ('promoted', 'PosReg', (50, 58)) ('CDCA3', 'Gene', (141, 146)) ('expression', 'Var', (39, 49)) ('CDCA3', 'Gene', '83461', (33, 38)) ('CDCA3', 'Gene', (33, 38)) ('patients', 'Species', '9606', (122, 130)) ('Cancer', 'Phenotype', 'HP:0002664', (248, 254)) ('Cancer', 'Disease', (248, 254)) ('high', 'Var', (28, 32)) ('Cancer', 'Disease', 'MESH:D009369', (248, 254)) ('HCC', 'Phenotype', 'HP:0001402', (217, 220)) ('infiltration of T cells', 'CPA', (63, 86)) 109446 33604380 Significance of HR referred to the ratio of risk rate produced by high CDCA3 expression to the risk rate produced by low CDCA3 expression, on the premise that p < 0.05. ('expression', 'MPA', (77, 87)) ('CDCA3', 'Gene', (121, 126)) ('CDCA3', 'Gene', '83461', (71, 76)) ('CDCA3', 'Gene', (71, 76)) ('high', 'Var', (66, 70)) ('CDCA3', 'Gene', '83461', (121, 126)) 109447 33604380 The higher the HR value, the bigger the ratio of risk rate produced by high CDCA3 expression on survival. ('HR value', 'MPA', (15, 23)) ('CDCA3', 'Gene', (76, 81)) ('CDCA3', 'Gene', '83461', (76, 81)) ('high', 'Var', (71, 75)) 109458 33604380 Here, we established a standard to describe the association between CDCA3 expression and gene markers of infiltrating immune cells, where 0.00-0.29 was considered weak, 0.30-0.59 was considered moderate, 0.60-0.79 was considered strong, and 0.80-1.00 was considered very strong expression. ('CDCA3', 'Gene', '83461', (68, 73)) ('0.30-0.59', 'Var', (169, 178)) ('association', 'Interaction', (48, 59)) ('CDCA3', 'Gene', (68, 73)) 109464 33604380 Here, logrank p < 0.05 was statistically significant, and significance of HR referred to the ratio of risk rate produced by the application of high expression of CDCA3 to the risk rate produced by low expression of CDCA3. ('CDCA3', 'Gene', '83461', (162, 167)) ('high expression', 'Var', (143, 158)) ('CDCA3', 'Gene', (162, 167)) ('CDCA3', 'Gene', (215, 220)) ('CDCA3', 'Gene', '83461', (215, 220)) 109486 33604380 As revealed by PPS (HR = 0.67, 95%CI = 0.54-0.84, p = 0.00038) (Figure 2(j)), the high CDCA3 expression was associated with the better prognosis in gastric cancer because the HR < 1 and p < 0.05. ('PPS', 'Chemical', '-', (15, 18)) ('CDCA3', 'Gene', (87, 92)) ('gastric cancer', 'Disease', (148, 162)) ('high', 'Var', (82, 86)) ('gastric cancer', 'Disease', 'MESH:D013274', (148, 162)) ('gastric cancer', 'Phenotype', 'HP:0012126', (148, 162)) ('expression', 'MPA', (93, 103)) ('cancer', 'Phenotype', 'HP:0002664', (156, 162)) ('CDCA3', 'Gene', '83461', (87, 92)) 109489 33604380 These results indicated that a high expression of CDCA3 had a strong association with poor outcomes for patients with various cancers, especially in HCC, and the correlation depended on the type of tumor. ('cancer', 'Phenotype', 'HP:0002664', (126, 132)) ('HCC', 'Phenotype', 'HP:0001402', (149, 152)) ('tumor', 'Disease', 'MESH:D009369', (198, 203)) ('CDCA3', 'Gene', '83461', (50, 55)) ('cancers', 'Phenotype', 'HP:0002664', (126, 133)) ('tumor', 'Phenotype', 'HP:0002664', (198, 203)) ('cancers', 'Disease', (126, 133)) ('CDCA3', 'Gene', (50, 55)) ('cancers', 'Disease', 'MESH:D009369', (126, 133)) ('high', 'Var', (31, 35)) ('tumor', 'Disease', (198, 203)) ('patients', 'Species', '9606', (104, 112)) ('expression', 'MPA', (36, 46)) ('HCC', 'Disease', (149, 152)) 109496 33604380 p < 0.05 was statistically significant, and the hazard ratio > 1 represented the higher risk factors produced by high CDCA3 expression affected in the prognosis of patients with different clinicopathologic features. ('high', 'Var', (113, 117)) ('CDCA3', 'Gene', '83461', (118, 123)) ('CDCA3', 'Gene', (118, 123)) ('expression', 'MPA', (124, 134)) ('patients', 'Species', '9606', (164, 172)) ('affected', 'Reg', (135, 143)) 109500 33604380 It was remarkable that the hazard ratio (HR) of CDCA3 expression in univariate analysis equaled to 2.075, the value of HR and the p < 0.001 both indicated that CDCA3 can predict the prognosis in HCC, and the hazard ratio revealed that the patients with high CDCA3 expression had 2.075 times of higher risk in poor OS than the patients with low CDCA3 expression in univariate analysis. ('CDCA3', 'Gene', (258, 263)) ('high', 'Var', (253, 257)) ('CDCA3', 'Gene', (48, 53)) ('CDCA3', 'Gene', '83461', (344, 349)) ('poor OS', 'Disease', (309, 316)) ('CDCA3', 'Gene', (344, 349)) ('CDCA3', 'Gene', '83461', (160, 165)) ('patients', 'Species', '9606', (239, 247)) ('patients', 'Species', '9606', (326, 334)) ('CDCA3', 'Gene', (160, 165)) ('HCC', 'Disease', (195, 198)) ('HCC', 'Phenotype', 'HP:0001402', (195, 198)) ('expression', 'Var', (264, 274)) ('CDCA3', 'Gene', '83461', (258, 263)) ('CDCA3', 'Gene', '83461', (48, 53)) 109502 33604380 The results showed that high expression of CDCA3 was associated with poor outcomes in HCC patients, and it could act as a potential independent predictor of survival (HR = 2.037; 95%CI = 1.484-2.796; p < 0.001; Figure 3(d)) by excluding confounding factors. ('CDCA3', 'Gene', '83461', (43, 48)) ('CDCA3', 'Gene', (43, 48)) ('high', 'Var', (24, 28)) ('HCC', 'Disease', (86, 89)) ('patients', 'Species', '9606', (90, 98)) ('HCC', 'Phenotype', 'HP:0001402', (86, 89)) 109503 33604380 Besides, the value of the hazard ratio revealed that the patients with high CDCA3 expression had 2.037 times of higher risk in poor OS than the patients with low CDCA3 expression. ('poor OS', 'Disease', (127, 134)) ('CDCA3', 'Gene', '83461', (162, 167)) ('CDCA3', 'Gene', '83461', (76, 81)) ('high', 'Var', (71, 75)) ('patients', 'Species', '9606', (57, 65)) ('CDCA3', 'Gene', (162, 167)) ('CDCA3', 'Gene', (76, 81)) ('expression', 'Var', (82, 92)) ('patients', 'Species', '9606', (144, 152)) 109510 33604380 The results showed that high expression of CDCA3 was associated with poor prognosis of patients, high levels of infiltrating immune cells, and tumor purity in HCC and ACC. ('tumor', 'Disease', (143, 148)) ('patients', 'Species', '9606', (87, 95)) ('CDCA3', 'Gene', '83461', (43, 48)) ('CDCA3', 'Gene', (43, 48)) ('ACC', 'Phenotype', 'HP:0006744', (167, 170)) ('high', 'Var', (24, 28)) ('tumor', 'Disease', 'MESH:D009369', (143, 148)) ('expression', 'MPA', (29, 39)) ('HCC', 'Disease', (159, 162)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) ('HCC', 'Phenotype', 'HP:0001402', (159, 162)) 109513 33604380 The high CDCA3 expression was also correlated with a poorer survival (OS: HR = 2.5, p = 6.4E - 07; DFS: HR = 1.8, p = 0.00026) (Figure S1 ac-ad) but was positively related to the infiltrating levels of B cells (partial cor = 0.252, p = 2.42E - 08), CD4+ T cells (partial cor = 0.222, p = 1.01E - 06), macrophages (partial cor = 0.207, p = 5.93E - 06), neutrophils (partial cor = 0.174, p = 1.35E - 04), and dendritic cells (partial cor = 0.229, p = 4.54E - 07) in LGG (Figure S2 s). ('CDCA3', 'Gene', '83461', (9, 14)) ('CDCA3', 'Gene', (9, 14)) ('related', 'Reg', (164, 171)) ('expression', 'MPA', (15, 25)) ('high', 'Var', (4, 8)) ('CD4', 'Gene', (249, 252)) ('CD4', 'Gene', '920', (249, 252)) 109541 33604380 According to the univariate and multivariate analyses, we identified that T stage, M stage, and CDCA3 expression had significant prognostic values for predicting the survival of patients with HCC; in fact, the high expression determined poor OS of patients with HCC and suggested that increased CDCA3 expression deteriorated the state of patients with HCC. ('HCC', 'Phenotype', 'HP:0001402', (262, 265)) ('HCC', 'Disease', (352, 355)) ('CDCA3', 'Gene', (96, 101)) ('increased', 'PosReg', (285, 294)) ('HCC', 'Phenotype', 'HP:0001402', (352, 355)) ('patients', 'Species', '9606', (178, 186)) ('determined', 'Reg', (226, 236)) ('HCC', 'Phenotype', 'HP:0001402', (192, 195)) ('high', 'Var', (210, 214)) ('CDCA3', 'Gene', '83461', (295, 300)) ('patients', 'Species', '9606', (338, 346)) ('patients', 'Species', '9606', (248, 256)) ('HCC', 'Disease', (262, 265)) ('CDCA3', 'Gene', (295, 300)) ('CDCA3', 'Gene', '83461', (96, 101)) 109545 33604380 Thus, CDCA3 expression can potentially influence the immunosuppressive effect in HCC. ('influence', 'Reg', (39, 48)) ('HCC', 'Disease', (81, 84)) ('expression', 'Var', (12, 22)) ('HCC', 'Phenotype', 'HP:0001402', (81, 84)) ('immunosuppressive', 'MPA', (53, 70)) ('CDCA3', 'Gene', '83461', (6, 11)) ('CDCA3', 'Gene', (6, 11)) 109556 33604380 According to the results of the univariate and multivariate analyses, T stage, M stage, and CDCA3 expression were important prognostic factors for the survival of patients with HCC; importantly, high CDCA3 expression had the potential to be an independent predictor for poor outcome for patients with HCC according to the results of multivariate analyses. ('patients', 'Species', '9606', (163, 171)) ('HCC', 'Disease', (301, 304)) ('CDCA3', 'Gene', '83461', (200, 205)) ('expression', 'MPA', (206, 216)) ('HCC', 'Phenotype', 'HP:0001402', (177, 180)) ('HCC', 'Phenotype', 'HP:0001402', (301, 304)) ('patients', 'Species', '9606', (287, 295)) ('CDCA3', 'Gene', (200, 205)) ('CDCA3', 'Gene', '83461', (92, 97)) ('high', 'Var', (195, 199)) ('CDCA3', 'Gene', (92, 97)) 109631 32664679 Cyproheptadine, a serotonin receptor blocker, can be used in doses of 4 mg/8 h. Telotristat ethyl has been found to reduce serotonin production by inhibiting tryptophan hydroxylase (TPH). ('serotonin', 'Chemical', 'MESH:D012701', (18, 27)) ('Cyproheptadine', 'Chemical', 'MESH:D003533', (0, 14)) ('reduce', 'NegReg', (116, 122)) ('Telotristat', 'Var', (80, 91)) ('inhibiting', 'NegReg', (147, 157)) ('serotonin production', 'MPA', (123, 143)) ('reduce serotonin production', 'Phenotype', 'HP:0003144', (116, 143)) ('serotonin', 'Chemical', 'MESH:D012701', (123, 132)) ('tryptophan', 'Chemical', 'MESH:D014364', (158, 168)) 109635 32664679 If CS symptoms appear during the Lu177-DOTATE infusion, the aim at that moment is to block hormonal secretion and the effect of the released mediators in order to control symptomatology (Table 3). ('hormonal secretion', 'MPA', (91, 109)) ('-DOTA', 'Chemical', 'MESH:C071349', (38, 43)) ('Lu177-DOTATE', 'Var', (33, 45)) ('tomato', 'Species', '4081', (175, 181)) 109669 32664679 If hyperglycemia is present, glucose >= 180 mg/dL, it will be treated according to the protocols of glycemic control during hospital stay. ('hyperglycemia', 'Phenotype', 'HP:0003074', (3, 16)) ('glucose', 'MPA', (29, 36)) ('glucose', 'Chemical', 'MESH:D005947', (29, 36)) ('hyperglycemia', 'Disease', 'MESH:D006943', (3, 16)) ('>= 180 mg/dL', 'Var', (37, 49)) ('hyperglycemia', 'Disease', (3, 16)) 109756 30831508 The inadequate volume replacement, the large intraoperativeblood loss (7300 ml) during surgery,and the clamping of the IVC probably resulted in the severe hypotension. ('resulted', 'Reg', (132, 140)) ('intraoperativeblood loss', 'Disease', (45, 69)) ('hypotension', 'Phenotype', 'HP:0002615', (155, 166)) ('7300', 'Var', (71, 75)) ('volume replacement', 'MPA', (15, 33)) ('hypotension', 'Disease', 'MESH:D007022', (155, 166)) ('intraoperativeblood loss', 'Disease', 'MESH:D015431', (45, 69)) ('hypotension', 'Disease', (155, 166)) 109778 30459963 Characteristic splaying of the carotid artery and internal jugular vein (Figure 1), as well as typical contrast enhancement with flow voids suggested a vagal paraganglioma (VPG) with a less likely differential diagnosis of schwannoma. ('paraganglioma', 'Phenotype', 'HP:0002668', (158, 171)) ('schwannoma', 'Disease', (223, 233)) ('vagal paraganglioma', 'Disease', (152, 171)) ('schwannoma', 'Disease', 'MESH:D009442', (223, 233)) ('VPG', 'Phenotype', 'HP:0002886', (173, 176)) ('PG', 'Phenotype', 'HP:0002668', (174, 176)) ('vagal paraganglioma', 'Phenotype', 'HP:0002886', (152, 171)) ('splaying', 'Var', (15, 23)) ('schwannoma', 'Phenotype', 'HP:0100008', (223, 233)) ('vagal paraganglioma', 'Disease', 'MESH:C536827', (152, 171)) 109900 30217041 More than 40% of patients with these neoplasms carry germline mutations involving one of more than 20 genes. ('germline mutations', 'Var', (53, 71)) ('neoplasms', 'Phenotype', 'HP:0002664', (37, 46)) ('neoplasms', 'Disease', 'MESH:D009369', (37, 46)) ('patients', 'Species', '9606', (17, 25)) ('neoplasms', 'Disease', (37, 46)) ('neoplasm', 'Phenotype', 'HP:0002664', (37, 45)) 109904 30217041 The use of antibodies to SDHB provides a screen for all SDHx-related disease, since any mutation involving one of the SDH subunit and the assembly factors results in destabilization of the protein complex and loss of immunoreactivity (Figure 3g). ('mutation', 'Var', (88, 96)) ('protein', 'Protein', (189, 196)) ('destabilization', 'MPA', (166, 181)) ('SDH', 'Gene', (25, 28)) ('SDH', 'Gene', '6390', (56, 59)) ('SDH', 'Gene', '6390', (118, 121)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDHB', 'Gene', (25, 29)) ('SDH', 'Gene', (56, 59)) ('loss', 'NegReg', (209, 213)) ('SDH', 'Gene', (118, 121)) ('immunoreactivity', 'MPA', (217, 233)) ('SDH', 'Gene', '6390', (25, 28)) ('SDHx', 'Chemical', '-', (56, 60)) 109911 30217041 However, recent evidence also suggested that adrenal medullary hyperplasia may also occur in patients with TMEM127, MAX and SDHB mutations. ('SDHB', 'Gene', (124, 128)) ('MAX', 'Gene', (116, 119)) ('MAX', 'Gene', '4149', (116, 119)) ('TMEM127', 'Gene', (107, 114)) ('mutations', 'Var', (129, 138)) ('adrenal medullary hyperplasia', 'Phenotype', 'HP:0008239', (45, 74)) ('TMEM127', 'Gene', '55654', (107, 114)) ('hyperplasia', 'Disease', 'MESH:D006965', (63, 74)) ('patients', 'Species', '9606', (93, 101)) ('SDHB', 'Gene', '6390', (124, 128)) ('hyperplasia', 'Disease', (63, 74)) 109925 30217041 Large tumor size, extra-adrenal tumor location, catecholamine profile and SDHB mutation status are all considered important risk factors for metastatic behavior. ('catecholamine', 'Chemical', 'MESH:D002395', (48, 61)) ('SDHB', 'Gene', '6390', (74, 78)) ('extra-adrenal tumor', 'Disease', 'MESH:D010236', (18, 37)) ('tumor', 'Disease', 'MESH:D009369', (32, 37)) ('SDHB', 'Gene', (74, 78)) ('catecholamine profile', 'Phenotype', 'HP:0003334', (48, 69)) ('tumor', 'Disease', 'MESH:D009369', (6, 11)) ('extra-adrenal tumor', 'Disease', (18, 37)) ('adrenal tumor', 'Phenotype', 'HP:0100631', (24, 37)) ('tumor', 'Phenotype', 'HP:0002664', (32, 37)) ('mutation', 'Var', (79, 87)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('tumor', 'Disease', (32, 37)) ('catecholamine profile', 'MPA', (48, 69)) ('tumor', 'Disease', (6, 11)) 109926 30217041 In contrast, the risk of biological aggression in sporadic disease (especially in pheochromocytoma) has been linked to a novel molecular pathway known as the wnt-altered pathway characterized by MAML3 (Mastermind Like Transcriptional Coactivator 3) oncogene fusions along with other alterations including ATRX (Alpha Thalassemia/Mental Retardation Syndrome X-Linked) and CSDE1 (Cold Shock Domain Containing E1) mutations. ('CSDE1', 'Gene', '7812', (371, 376)) ('aggression', 'Phenotype', 'HP:0000718', (36, 46)) ('Mastermind Like Transcriptional Coactivator 3', 'Gene', (202, 247)) ('Cold Shock Domain Containing E1', 'Gene', '7812', (378, 409)) ('aggression in sporadic disease', 'Disease', 'MESH:D001523', (36, 66)) ('MAML3', 'Gene', (195, 200)) ('Cold Shock Domain Containing E1', 'Gene', (378, 409)) ('Mental Retardation', 'Phenotype', 'HP:0001249', (329, 347)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (82, 98)) ('mutations', 'Var', (411, 420)) ('fusions', 'Var', (258, 265)) ('ATRX', 'Gene', (305, 309)) ('MAML3', 'Gene', '55534', (195, 200)) ('Alpha Thalassemia/Mental Retardation Syndrome X-Linked', 'Gene', '546', (311, 365)) ('pheochromocytoma', 'Disease', (82, 98)) ('ATRX', 'Gene', '546', (305, 309)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (82, 98)) ('linked', 'Reg', (109, 115)) ('Shock', 'Phenotype', 'HP:0031273', (383, 388)) ('CSDE1', 'Gene', (371, 376)) ('Mastermind Like Transcriptional Coactivator 3', 'Gene', '55534', (202, 247)) ('aggression in sporadic disease', 'Disease', (36, 66)) 109985 29464059 The mechanisms by which these alterations lead to tumorigenesis are unclear, however. ('tumor', 'Disease', 'MESH:D009369', (50, 55)) ('alterations', 'Var', (30, 41)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('lead to', 'Reg', (42, 49)) ('tumor', 'Disease', (50, 55)) 109986 29464059 In an effort to fundamentally understand how SDH loss reprograms cell biology, we developed an immortalized mouse embryonic fibroblast cell line with conditional disruption of Sdhc and characterize the kinetics of Sdhc gene rearrangement, SDHC protein loss, succinate accumulation, and the resultant hypoproliferative phenotype. ('protein', 'Protein', (244, 251)) ('rearrangement', 'Var', (224, 237)) ('Sdhc', 'Gene', (214, 218)) ('mouse', 'Species', '10090', (108, 113)) ('succinate accumulation', 'MPA', (258, 280)) ('disruption', 'Var', (162, 172)) ('loss', 'NegReg', (252, 256)) ('SDHC', 'Gene', (239, 243)) ('succinate', 'Chemical', 'MESH:D019802', (258, 267)) ('Sdhc', 'Gene', (176, 180)) 109989 29464059 Our data show that SDH-loss cells are selectively vulnerable to LDH genetic knock-down or chemical inhibition, suggesting that LDH inhibition may be an effective therapeutic strategy for SDH-loss PPGL. ('SDH-loss', 'Gene', (19, 27)) ('PPGL', 'Chemical', '-', (196, 200)) ('SDH-loss', 'Gene', (187, 195)) ('knock-down', 'Var', (76, 86)) 109993 29464059 Mutations in tumor-suppressing genes encoding subunits of the succinate dehydrogenase (SDH) complex (SDHA, SDHB, SDHC, and SDHD, i.e. ('tumor', 'Disease', (13, 18)) ('SDHB', 'Gene', (107, 111)) ('succinate dehydrogenase', 'Gene', (62, 85)) ('succinate dehydrogenase', 'Gene', '6390', (62, 85)) ('SDHD', 'Gene', (123, 127)) ('SDHD', 'Gene', '6392', (123, 127)) ('SDHA', 'Gene', (101, 105)) ('Mutations', 'Var', (0, 9)) ('tumor', 'Disease', 'MESH:D009369', (13, 18)) ('SDHC', 'Gene', (113, 117)) ('SDHA', 'Gene', '54949', (101, 105)) ('tumor', 'Phenotype', 'HP:0002664', (13, 18)) 109997 29464059 These include mutations in transmembrane protein 127 (TMEM127), myc-associated factor X (MAX) genes, somatic gain-of-function mutations in the gene encoding hypoxia-inducible factor 2alpha (HIF2A), and pathogenic germline mutations in the FH gene encoding fumarate hydratase. ('gain-of-function', 'PosReg', (109, 125)) ('HIF2A', 'Gene', (190, 195)) ('myc-associated factor X', 'Gene', '4149', (64, 87)) ('fumarate hydratase', 'Gene', (256, 274)) ('fumarate hydratase', 'Gene', '2271', (256, 274)) ('TMEM127', 'Gene', (54, 61)) ('hypoxia-inducible factor 2alpha', 'Gene', (157, 188)) ('MAX', 'Gene', '4149', (89, 92)) ('germline mutations', 'Var', (213, 231)) ('myc-associated factor X', 'Gene', (64, 87)) ('HIF2A', 'Gene', '2034', (190, 195)) ('TMEM127', 'Gene', '55654', (54, 61)) ('mutations', 'Var', (126, 135)) ('FH', 'Disease', 'MESH:D006938', (239, 241)) ('hypoxia-inducible factor 2alpha', 'Gene', '2034', (157, 188)) ('mutations', 'Var', (14, 23)) ('MAX', 'Gene', (89, 92)) 109998 29464059 Decreased activity of SDH due to mutations in SDHx genes leads to increased intracellular concentrations of succinate, a tricarboxylic acid (TCA) cycle intermediate thought to be a crucial tumorigenic oncometabolite SDH-deficient PPGL. ('SDHx genes', 'Gene', (46, 56)) ('SDHx', 'Chemical', '-', (46, 50)) ('media', 'Species', '1115375', (157, 162)) ('activity', 'MPA', (10, 18)) ('increased', 'PosReg', (66, 75)) ('succinate', 'Chemical', 'MESH:D019802', (108, 117)) ('crucial tumorigenic oncometabolite SDH-deficient', 'Disease', (181, 229)) ('Decreased', 'NegReg', (0, 9)) ('mutations', 'Var', (33, 42)) ('increased intracellular concentrations', 'Phenotype', 'HP:0003575', (66, 104)) ('SDH', 'Enzyme', (22, 25)) ('TCA', 'Chemical', 'MESH:D014233', (141, 144)) ('PPGL', 'Chemical', '-', (230, 234)) ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (121, 139)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) ('intracellular concentrations of succinate', 'MPA', (76, 117)) ('crucial tumorigenic oncometabolite SDH-deficient', 'Disease', 'MESH:D002471', (181, 229)) 110000 29464059 Inhibition of prolyl hydroxylases by succinate is believed to activate pseudohypoxic signaling, which may be tumorigenic. ('activate', 'PosReg', (62, 70)) ('succinate', 'Chemical', 'MESH:D019802', (37, 46)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('Inhibition', 'Var', (0, 10)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('pseudohypoxic signaling', 'MPA', (71, 94)) ('tumor', 'Disease', (109, 114)) 110005 29464059 Genetic and hypoxia-mediated disruptions of the TCA cycle have been suggested to result in greater reliance on glycolysis and/or reductive carboxylation of glutamine for the provision of carbon for anaerobic purposes. ('glycolysis', 'MPA', (111, 121)) ('reductive carboxylation of glutamine', 'MPA', (129, 165)) ('disruptions', 'Var', (29, 40)) ('media', 'Species', '1115375', (20, 25)) ('reliance', 'MPA', (99, 107)) ('glutamine', 'Chemical', 'MESH:D005973', (156, 165)) ('TCA', 'Chemical', 'MESH:D014233', (48, 51)) ('carbon', 'Chemical', 'MESH:D002244', (187, 193)) ('hypoxia', 'Disease', 'MESH:D000860', (12, 19)) ('hypoxia', 'Disease', (12, 19)) 110008 29464059 In the current study, we characterize the sensitivity of our new SDH-loss model to genetic loss of LDHA and PCX via lentivirus-mediated shRNA knockdown. ('LDHA', 'Gene', (99, 103)) ('LDHA', 'Gene', '3939', (99, 103)) ('PCX', 'Gene', '5091', (108, 111)) ('media', 'Species', '1115375', (127, 132)) ('SDH-loss', 'Gene', (65, 73)) ('genetic', 'Var', (83, 90)) ('loss', 'NegReg', (91, 95)) ('PCX', 'Gene', (108, 111)) 110009 29464059 We developed experimental (Sdhc fl/fl) and control (Sdhc fl/wt) immortalized mouse embryonic fibroblast (iMEF) cell lines in which Sdhc gene rearrangement can be triggered by doxycycline induction of Cre recombinase expression. ('Sdhc', 'Gene', (131, 135)) ('doxycycline', 'Chemical', 'MESH:D004318', (175, 186)) ('mouse', 'Species', '10090', (77, 82)) ('rearrangement', 'Var', (141, 154)) 110030 29464059 The results of this analysis (Supplementary Figure 2D) reveal that, although SDHC-loss iMEF methylation differences have statistically-significant correlation with SDHx-loss PPGL and SDHB-loss imCC methylation differences, the correlation between SDHx-loss PPGL and SDHB-loss imCC methylation differences is approximately 5-fold stronger. ('differences', 'Var', (210, 221)) ('differences', 'Var', (104, 115)) ('SDHC-loss', 'Disease', 'MESH:D015431', (77, 86)) ('SDHx-loss PPGL and SDHB-loss', 'Disease', 'MESH:D015431', (164, 192)) ('SDHC-loss', 'Disease', (77, 86)) ('SDHx-loss PPGL and SDHB-loss', 'Disease', 'MESH:D015431', (247, 275)) ('iMEF', 'Gene', (87, 91)) 110033 29464059 Notably, several clusters were identified suggesting a conserved pattern of hypermethylation affecting ECM components and cell membrane (clusters #2, 13, 14), transcription (clusters #4, 16), Wnt signaling (clusters #8, 10), calcium signaling (cluster #12), homeobox factors (cluster #15), and collagen (cluster #17). ('calcium signaling', 'MPA', (225, 242)) ('hypermethylation', 'Var', (76, 92)) ('Wnt', 'MPA', (192, 195)) ('calcium', 'Chemical', 'MESH:D002118', (225, 232)) 110043 29464059 We first tested whether SDH-deficient cells are more sensitive to LDHA knockdown than are cells with intact SDH activity. ('knockdown', 'Var', (71, 80)) ('LDHA', 'Gene', '3939', (66, 70)) ('LDHA', 'Gene', (66, 70)) 110044 29464059 iMEFs were transduced with two independent short hairpin RNA (shRNA)-expressing lentiviruses to generate stable LDHA knockdown iMEF lines (Figure 5B). ('LDHA', 'Gene', '3939', (112, 116)) ('MEFs', 'CellLine', 'CVCL:9115', (1, 5)) ('knockdown', 'Var', (117, 126)) ('LDHA', 'Gene', (112, 116)) 110046 29464059 The cells were then treated with doxycycline to trigger Sdhc gene rearrangement and subsequent loss of SDHC protein. ('doxycycline', 'Chemical', 'MESH:D004318', (33, 44)) ('protein', 'Protein', (108, 115)) ('SDHC', 'Gene', (103, 107)) ('rearrangement', 'Var', (66, 79)) ('Sdhc gene', 'Gene', (56, 65)) ('loss', 'NegReg', (95, 99)) 110052 29464059 Cells were then treated with doxycycline to induce Sdhc gene rearrangement and evaluated for caspase substrate cleavage as a marker of apoptosis on day 9 post doxycycline initiation (Figure 5F, 5G). ('doxycycline', 'Chemical', 'MESH:D004318', (159, 170)) ('rearrangement', 'Var', (61, 74)) ('doxycycline', 'Chemical', 'MESH:D004318', (29, 40)) ('Sdhc gene', 'Gene', (51, 60)) ('induce', 'Reg', (44, 50)) 110058 29464059 In the current work, we developed a tet-inducible iMEF model with silencing gene rearrangement of the Sdhc floxed allele driven by doxycycline-dependent expression of cre-recombinase from a tet-inducible promoter. ('doxycycline', 'Chemical', 'MESH:D004318', (131, 142)) ('Sdhc', 'Gene', (102, 106)) ('rearrangement', 'Var', (81, 94)) ('tet', 'Chemical', 'MESH:C010349', (36, 39)) ('tet', 'Chemical', 'MESH:C010349', (190, 193)) 110059 29464059 Using this model and an isogenic Sdhc fl/wt control cell line, we verified that our cell lines displayed robust Sdhc gene rearrangement, SDHC and SDHB protein loss, and accumulation of succinate following induction with doxycycline. ('doxycycline', 'Chemical', 'MESH:D004318', (220, 231)) ('protein', 'Protein', (151, 158)) ('rearrangement', 'Var', (122, 135)) ('SDHB', 'Gene', (146, 150)) ('Sdhc gene', 'Gene', (112, 121)) ('loss', 'NegReg', (159, 163)) ('accumulation', 'PosReg', (169, 181)) ('succinate', 'Chemical', 'MESH:D019802', (185, 194)) ('SDHC', 'Gene', (137, 141)) 110062 29464059 It is unclear to what extent altered expression of these cellular components accounts for a malignant phenotype in human PPGL, but it is intriguing to consider that altered expression of these components, and especially extracellular matrix components, could facilitate altered adhesion of a cell to its host tissue and enable increased motility, properties that are likely essential for malignant invasion of local structures and metastasis. ('altered', 'Var', (165, 172)) ('PPGL', 'Chemical', '-', (121, 125)) ('adhesion', 'CPA', (278, 286)) ('increased', 'PosReg', (327, 336)) ('motility', 'CPA', (337, 345)) ('facilitate', 'PosReg', (259, 269)) ('human', 'Species', '9606', (115, 120)) 110068 29464059 Taken in conjunction with our previous published work showing that inhibition of alcohol dehydrogenase in yeast is synthetic lethal with SDH loss, this is additional evidence suggesting that fermentation is up-regulated in SDH-loss context. ('inhibition', 'Var', (67, 77)) ('yeast', 'Species', '4932', (106, 111)) ('loss', 'NegReg', (141, 145)) ('up-regulated', 'PosReg', (207, 219)) ('SDH', 'Gene', (137, 140)) ('fermentation', 'MPA', (191, 203)) 110080 29464059 In this model, silencing gene rearrangement of the Sdhc floxed allele is driven by doxycycline-dependent expression of Cre recombinase from a tet-inducible promoter. ('doxycycline', 'Chemical', 'MESH:D004318', (83, 94)) ('silencing gene rearrangement', 'Var', (15, 43)) ('Sdhc', 'Gene', (51, 55)) ('tet', 'Chemical', 'MESH:C010349', (142, 145)) 110082 29464059 We then crossed Sdhcfl/fl;R26M2rtTA/M2rtT animals with Sdhcfl/wt;TetOcre animals to yield R26M2rtTA/wt;TetOcre;Sdhcfl/fl (experimental) and R26M2rtTA/wt;TetOcre;Sdhc fl/wt (control) genotypes and established MEF cell lines from day 13 mouse embryos. ('Tet', 'Chemical', 'MESH:C010349', (65, 68)) ('Tet', 'Chemical', 'MESH:C010349', (103, 106)) ('R26M2rtTA/wt', 'Var', (140, 152)) ('mouse', 'Species', '10090', (235, 240)) ('Tet', 'Chemical', 'MESH:C010349', (153, 156)) ('R26M2rtTA/wt', 'Var', (90, 102)) 110107 29464059 Clone names for LDHA knock-down constructs were NM_010699.1-1484s1c1 (LDHA8), NM_010699,1-434s1c1 (LDHA9), NM_010699,1-537s1c1 (LDHA10), NM_010699.1-603s1c1 (LDHA11), and NM_010699.1-822s1c1 (LDHA12). ('NM_010699.1-603s1c1', 'Var', (137, 156)) ('LDHA', 'Gene', (99, 103)) ('LDHA', 'Gene', (158, 162)) ('NM_010699.1-822s1c1', 'Var', (171, 190)) ('LDHA', 'Gene', '3939', (16, 20)) ('LDHA', 'Gene', '3939', (192, 196)) ('LDHA', 'Gene', '3939', (99, 103)) ('LDHA', 'Gene', '3939', (158, 162)) ('NM_010699.1-1484s1c1', 'Var', (48, 68)) ('LDHA', 'Gene', (128, 132)) ('LDHA', 'Gene', (70, 74)) ('LDHA', 'Gene', '3939', (128, 132)) ('LDHA', 'Gene', '3939', (70, 74)) ('LDHA', 'Gene', (16, 20)) ('LDHA', 'Gene', (192, 196)) 110108 29464059 Clone names for PCX knock-down constructs were NM_008797.1-1057s1c1 (PCX13), NM_008797.1-1456s1c1 (PCX14), NM_008797.1-190s1c1 (PCX15), NM_008797.1-2986s1c1 (PCX16), and NM_008797.1-3805s1c1 (PCX17). ('NM_008797.1-2986s1c1', 'Var', (136, 156)) ('PCX', 'Gene', '5091', (128, 131)) ('PCX', 'Gene', (16, 19)) ('NM_008797.1-190s1c1', 'Var', (107, 126)) ('NM_008797.1-1057s1c1', 'Var', (47, 67)) ('NM_008797.1-3805s1c1', 'Var', (170, 190)) ('PCX', 'Gene', (192, 195)) ('PCX', 'Gene', (99, 102)) ('PCX', 'Gene', '5091', (16, 19)) ('PCX', 'Gene', '5091', (99, 102)) ('PCX', 'Gene', '5091', (192, 195)) ('PCX', 'Gene', (69, 72)) ('PCX', 'Gene', (158, 161)) ('PCX', 'Gene', '5091', (158, 161)) ('NM_008797.1-1456s1c1', 'Var', (77, 97)) ('PCX', 'Gene', (128, 131)) ('PCX', 'Gene', '5091', (69, 72)) 110123 29464059 Confocal microscopy images from LDHA and PCX knockdown experiments were assessed in replicates on day 9 post doxycycline initiation. ('doxycycline', 'Chemical', 'MESH:D004318', (109, 120)) ('PCX', 'Gene', (41, 44)) ('LDHA', 'Gene', (32, 36)) ('PCX', 'Gene', '5091', (41, 44)) ('LDHA', 'Gene', '3939', (32, 36)) ('knockdown', 'Var', (45, 54)) 110128 29464059 Following induction of Sdhc gene rearrangement in Sdhc fl/fl and Sdhc fl/wt iMEF lines for 5 d, cells were diluted into DMEM containing penicillin/streptomycin antibiotics (0.5 mg/mL), non-essential amino acids (100 micromolar each of glycine, alanine, asparagine, aspartic acid, glutamic acid, proline, and serine), sodium pyruvate (1 mM), and HEPES buffer (10 mM), and then seeded into 96 well plates at a low density so as to achieve single cells per well. ('glutamic acid', 'MPA', (280, 293)) ('Sdhc gene', 'Gene', (23, 32)) ('rearrangement', 'Var', (33, 46)) ('pyruvate', 'Chemical', 'MESH:D019289', (324, 332)) 110130 29464059 For drug studies testing metabolic vulnerability of LDH inhibition, 13.5E6 cells from stable SDHC loss and control iMEF lines were plated into wells of a 96 well plate in 100 microliters of phenol red-free DMEM media containing penicillin/streptomycin antibiotics (0.5 mg/mL), non-essential amino acids (100 microM each of glycine, alanine, asparagine, aspartic acid, glutamic acid, proline, and serine), sodium pyruvate (1 mM), and HEPES buffer (10 mM). ('glutamic acid', 'MPA', (368, 381)) ('proline', 'MPA', (383, 390)) ('13.5E6', 'CellLine', 'CVCL:4582', (68, 74)) ('sodium pyruvate', 'MPA', (405, 420)) ('aspartic acid', 'MPA', (353, 366)) ('pyruvate', 'Chemical', 'MESH:D019289', (412, 420)) ('100', 'Var', (304, 307)) ('SDHC', 'Gene', (93, 97)) ('loss', 'NegReg', (98, 102)) ('alanine', 'MPA', (332, 339)) ('asparagine', 'MPA', (341, 351)) ('media', 'Species', '1115375', (211, 216)) ('glycine', 'MPA', (323, 330)) 110155 28864906 Identical gains and losses of the following regions were identified in both tumor components (supplement 1): del(1p), del(4p), dup(4q), del(5q), del(6q), del(9p), del(17p), and trisomy 18. ('del(5q', 'Var', (136, 142)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('tumor', 'Disease', (76, 81)) ('dup(4q', 'Var', (127, 133)) ('del(9p', 'Gene', '100240748', (154, 160)) ('del(17p', 'Var', (163, 170)) ('del(6q', 'Var', (145, 151)) ('losses', 'NegReg', (20, 26)) ('del(1p', 'Gene', '10085', (109, 115)) ('gains', 'PosReg', (10, 15)) ('del(4p', 'Var', (118, 124)) ('tumor', 'Disease', 'MESH:D009369', (76, 81)) ('trisomy 18', 'Var', (177, 187)) 110191 28553188 Pathology confirmed these findings, and subsequent genetic testing confirmed a rearranged during transfection proto-oncogene mutation on exon 11, confirming the clinical diagnosis of multiple endocrine neoplasia 2A (MEN 2A). ('multiple endocrine neoplasia', 'Disease', 'MESH:D009377', (183, 211)) ('rearranged during transfection', 'Gene', '5979', (79, 109)) ('neoplasia', 'Phenotype', 'HP:0002664', (202, 211)) ('MEN 2A', 'Gene', '5979', (216, 222)) ('MEN 2A', 'Gene', (216, 222)) ('multiple endocrine neoplasia', 'Disease', (183, 211)) ('mutation on', 'Var', (125, 136)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (192, 211)) ('rearranged during transfection', 'Gene', (79, 109)) 110198 28553188 Like the prior gold standard radiopharmaceutical agent I-131 MIBG, I-123 MIBG is highly sensitive and specific for pheochromocytoma, with reported sensitivity of 83-100% and specificity of 95-100%. ('pheochromocytoma', 'Disease', 'MESH:D010673', (115, 131)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (115, 131)) ('MIBG', 'Var', (73, 77)) ('I-123 MIBG', 'Var', (67, 77)) ('I-123 MIBG', 'Chemical', '-', (67, 77)) ('I-131 MIBG', 'Chemical', 'MESH:D019797', (55, 65)) ('pheochromocytoma', 'Disease', (115, 131)) 110214 28553188 She underwent genetic testing for RET oncogene mutation, which revealed a mutation in exon 11 of the RET gene. ('RET', 'Gene', '5979', (34, 37)) ('mutation in exon 11', 'Var', (74, 93)) ('RET', 'Gene', (34, 37)) ('RET', 'Gene', '5979', (101, 104)) ('RET', 'Gene', (101, 104)) 110225 28553188 Since its Food and Drug Administration approval in 2008, use of I-123 MIBG has expanded due to practical reasons including: Lower radiation dose to the patient superior imaging quality, namely the ability to perform SPECT which provides much improved lesion contrast [Figure 2]. ('improved', 'PosReg', (242, 250)) ('I-123', 'Var', (64, 69)) ('lesion contrast', 'MPA', (251, 266)) ('patient', 'Species', '9606', (152, 159)) ('I-123 MIBG', 'Chemical', '-', (64, 74)) 110247 27689525 All the biochemical tests returned results within normal ranges, including chromogranin, blood catecholamines, and urinary metanephrines, as well as serum tumor markers (Ca19-9, CEA, Ca15-3). ('Ca15-3', 'Gene', '4582', (183, 189)) ('Ca19-9', 'Var', (170, 176)) ('tumor', 'Disease', 'MESH:D009369', (155, 160)) ('tumor', 'Phenotype', 'HP:0002664', (155, 160)) ('metanephrines', 'Chemical', 'MESH:D008676', (123, 136)) ('blood catecholamines', 'MPA', (89, 109)) ('urinary metanephrines', 'MPA', (115, 136)) ('tumor', 'Disease', (155, 160)) ('catecholamines', 'Chemical', 'MESH:D002395', (95, 109)) ('Ca15-3', 'Gene', (183, 189)) ('CEA', 'Gene', (178, 181)) ('CEA', 'Gene', '5670', (178, 181)) ('chromogranin', 'MPA', (75, 87)) 110306 25965060 On Positron emission Tomography with [18F] fluorodeoxyglucose integrated with computed tomography (18F-FDG PET/CT), the urinary bladder mass was 18F-FDG avid. ('FDG', 'Chemical', 'MESH:D019788', (149, 152)) ('FDG', 'Chemical', 'MESH:D019788', (103, 106)) ('18F-FDG avid', 'Var', (145, 157)) ('[18F] fluorodeoxyglucose', 'Chemical', 'MESH:D019788', (37, 61)) ('urinary bladder mass', 'CPA', (120, 140)) 110347 25965060 The patient was followed up in the out-patient clinics and, based on the Endocrine Society guidelines, she was involved in shared decision-making for genetic testing for paraganglioma, which consists of testing for succinate dehydrogenase (SDH) gene mutation. ('mutation', 'Var', (250, 258)) ('paraganglioma', 'Disease', 'MESH:D010235', (170, 183)) ('patient', 'Species', '9606', (39, 46)) ('SDH', 'Gene', '6390', (240, 243)) ('patient', 'Species', '9606', (4, 11)) ('SDH', 'Gene', (240, 243)) ('paraganglioma', 'Phenotype', 'HP:0002668', (170, 183)) ('paraganglioma', 'Disease', (170, 183)) ('succinate dehydrogenase', 'Gene', (215, 238)) ('succinate dehydrogenase', 'Gene', '6390', (215, 238)) 110357 25025441 All 17 patients who underwent genetic testing for mutation in the SDH subunits demonstrated germline mutations (16 in SDHB and 1 in SDHC). ('patients', 'Species', '9606', (7, 15)) ('SDH', 'Gene', '6390', (66, 69)) ('SDHB and 1', 'Gene', '6390', (118, 128)) ('SDH', 'Gene', (66, 69)) ('SDH', 'Gene', '6390', (132, 135)) ('SDH', 'Gene', '6390', (118, 121)) ('SDHC', 'Gene', (132, 136)) ('SDHC', 'Gene', '6391', (132, 136)) ('SDH', 'Gene', (118, 121)) ('SDH', 'Gene', (132, 135)) ('mutation', 'Var', (50, 58)) 110359 25025441 Seven of 10 patients (70%) with high-grade nuclei metastasized as did all 4 patients with coagulative necrosis. ('high-grade nuclei', 'Var', (32, 49)) ('patients', 'Species', '9606', (76, 84)) ('coagulative necrosis', 'Disease', (90, 110)) ('patients', 'Species', '9606', (12, 20)) ('coagulative necrosis', 'Phenotype', 'HP:0010885', (90, 110)) ('metastasized', 'CPA', (50, 62)) ('coagulative necrosis', 'Disease', 'MESH:D009336', (90, 110)) 110360 25025441 Two of 17 (12%) patients with low-grade nuclei metastasized, and both had unbiopsied contralateral tumors, which may have been the origin of the metastatic disease. ('contralateral tumors', 'Disease', 'MESH:D009069', (85, 105)) ('patients', 'Species', '9606', (16, 24)) ('low-grade nuclei', 'Var', (30, 46)) ('tumor', 'Phenotype', 'HP:0002664', (99, 104)) ('contralateral tumors', 'Disease', (85, 105)) ('tumors', 'Phenotype', 'HP:0002664', (99, 105)) 110363 25025441 Loss of immunohistochemical (IHC) staining for succinate dehydrogenase subunit B (SDHB) has been consistently demonstrated in pheochromocytomas/paragangliomas, gastrointestinal stromal tumors (GISTs), renal carcinomas, and pituitary adenomas arising in the setting of germline mutation of SDHA, SDHB, SDHC, SDHD, and SDHAF2. ('SDHA', 'Gene', '6389', (289, 293)) ('paragangliomas', 'Phenotype', 'HP:0002668', (144, 158)) ('paraganglioma', 'Phenotype', 'HP:0002668', (144, 157)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (223, 240)) ('SDHB', 'Gene', (295, 299)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (126, 142)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (160, 191)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (160, 191)) ('succinate dehydrogenase', 'Gene', '6390', (47, 70)) ('renal carcinomas', 'Disease', (201, 217)) ('pheochromocytomas/paragangliomas', 'Disease', (126, 158)) ('SDHA', 'Gene', (317, 321)) ('carcinoma', 'Phenotype', 'HP:0030731', (207, 216)) ('Loss', 'NegReg', (0, 4)) ('renal carcinomas', 'Phenotype', 'HP:0005584', (201, 217)) ('carcinomas', 'Phenotype', 'HP:0030731', (207, 217)) ('germline mutation', 'Var', (268, 285)) ('SDHA', 'Gene', '6389', (317, 321)) ('SDHC', 'Gene', '6391', (301, 305)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (201, 216)) ('SDHB', 'Gene', '6390', (82, 86)) ('SDHD', 'Disease', (307, 311)) ('gastrointestinal stromal tumors', 'Disease', (160, 191)) ('SDHAF2', 'Gene', (317, 323)) ('SDHAF2', 'Gene', '54949', (317, 323)) ('pheochromocytomas/paragangliomas', 'Disease', 'MESH:D010673', (126, 158)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (223, 241)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (126, 143)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (223, 241)) ('succinate dehydrogenase', 'Gene', (47, 70)) ('tumors', 'Phenotype', 'HP:0002664', (185, 191)) ('SDHA', 'Gene', (289, 293)) ('pituitary adenomas', 'Disease', (223, 241)) ('SDHB', 'Gene', '6390', (295, 299)) ('SDHB', 'Gene', (82, 86)) ('renal carcinomas', 'Disease', 'MESH:C538614', (201, 217)) ('GISTs', 'Phenotype', 'HP:0100723', (193, 198)) ('SDHC', 'Gene', (301, 305)) ('SDHD', 'Disease', 'None', (307, 311)) 110365 25025441 In addition to absent staining for SDHB, tumors associated with SDHA mutation also show loss of staining for SDHA, whereas tumors associated with germline mutation of SDHB, SDHC, SDHD, and SDHAF2 show positive staining for SDHA. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('tumors', 'Disease', 'MESH:D009369', (123, 129)) ('SDHB', 'Gene', (35, 39)) ('tumors', 'Disease', (41, 47)) ('SDHB', 'Gene', (167, 171)) ('SDHD', 'Disease', 'None', (179, 183)) ('SDHA', 'Gene', (64, 68)) ('SDHC', 'Gene', (173, 177)) ('SDHA', 'Gene', (223, 227)) ('tumors', 'Disease', 'MESH:D009369', (41, 47)) ('SDHA', 'Gene', '6389', (64, 68)) ('SDHA', 'Gene', (109, 113)) ('SDHA', 'Gene', '6389', (223, 227)) ('tumors', 'Phenotype', 'HP:0002664', (123, 129)) ('SDHA', 'Gene', (189, 193)) ('SDHA', 'Gene', '6389', (109, 113)) ('loss', 'NegReg', (88, 92)) ('SDHA', 'Gene', '6389', (189, 193)) ('SDHB', 'Gene', '6390', (35, 39)) ('tumor', 'Phenotype', 'HP:0002664', (123, 128)) ('SDHD', 'Disease', (179, 183)) ('tumors', 'Disease', (123, 129)) ('SDHC', 'Gene', '6391', (173, 177)) ('tumors', 'Phenotype', 'HP:0002664', (41, 47)) ('SDHAF2', 'Gene', (189, 195)) ('SDHAF2', 'Gene', '54949', (189, 195)) ('SDHB', 'Gene', '6390', (167, 171)) ('mutation', 'Var', (69, 77)) ('staining', 'MPA', (96, 104)) 110367 25025441 To date, 53 patients with renal neoplasms arising in the setting of germline SDH mutation have been reported (summarized in Supplementary Table 1, Supplemental Digital Content 1, http://links.lww.com/PAS/A224). ('SDH', 'Gene', (77, 80)) ('patients', 'Species', '9606', (12, 20)) ('renal neoplasms', 'Disease', (26, 41)) ('neoplasms', 'Phenotype', 'HP:0002664', (32, 41)) ('renal neoplasms', 'Disease', 'MESH:D007680', (26, 41)) ('mutation', 'Var', (81, 89)) ('renal neoplasms', 'Phenotype', 'HP:0009726', (26, 41)) ('SDH', 'Gene', '6390', (77, 80)) ('renal neoplasm', 'Phenotype', 'HP:0009726', (26, 40)) ('neoplasm', 'Phenotype', 'HP:0002664', (32, 40)) 110368 25025441 Briefly, 41 cases have been reported arising in the setting of SDHB mutation, 5 in the setting of SDHC mutation, 3 in the setting of SDHD mutation, and none in the setting of SDHA mutation. ('SDHB', 'Gene', (63, 67)) ('mutation', 'Var', (68, 76)) ('SDHC', 'Gene', '6391', (98, 102)) ('SDHD', 'Disease', 'None', (133, 137)) ('SDHA', 'Gene', '6389', (175, 179)) ('SDHD', 'Disease', (133, 137)) ('SDHB', 'Gene', '6390', (63, 67)) ('mutation', 'Var', (103, 111)) ('SDHC', 'Gene', (98, 102)) ('SDHA', 'Gene', (175, 179)) 110369 25025441 In 4 cases loss of IHC staining for SDHB has been reported without follow-up SDH mutation testing, but all patients with SDH-deficient renal carcinoma who have undergone complete genetic testing to date have been shown to have germline mutation in one of the SDH subunits. ('SDH', 'Gene', (77, 80)) ('patients', 'Species', '9606', (107, 115)) ('SDH', 'Gene', (259, 262)) ('carcinoma', 'Phenotype', 'HP:0030731', (141, 150)) ('SDHB', 'Gene', '6390', (36, 40)) ('SDH', 'Gene', '6390', (121, 124)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (135, 150)) ('SDHB', 'Gene', (36, 40)) ('SDH-deficient renal carcinoma', 'Disease', (121, 150)) ('SDH', 'Gene', '6390', (77, 80)) ('SDH', 'Gene', '6390', (36, 39)) ('SDH', 'Gene', (121, 124)) ('SDH', 'Gene', '6390', (259, 262)) ('SDH-deficient renal carcinoma', 'Disease', 'MESH:C538614', (121, 150)) ('germline mutation', 'Var', (227, 244)) ('SDH', 'Gene', (36, 39)) 110370 25025441 In 2010, we reported that renal carcinomas occurring secondary to SDH mutation can be identified by loss of IHC staining for SDHB. ('SDHB', 'Gene', '6390', (125, 129)) ('SDHB', 'Gene', (125, 129)) ('SDH', 'Gene', '6390', (66, 69)) ('renal carcinomas', 'Disease', (26, 42)) ('SDH', 'Gene', '6390', (125, 128)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (26, 41)) ('SDH', 'Gene', (66, 69)) ('carcinoma', 'Phenotype', 'HP:0030731', (32, 41)) ('carcinomas', 'Phenotype', 'HP:0030731', (32, 42)) ('renal carcinomas', 'Phenotype', 'HP:0005584', (26, 42)) ('mutation', 'Var', (70, 78)) ('SDH', 'Gene', (125, 128)) ('renal carcinomas', 'Disease', 'MESH:C538614', (26, 42)) 110376 25025441 To establish the risk of germline SDH mutation associated with SDH-deficient renal carcinoma. ('SDH', 'Gene', '6390', (63, 66)) ('SDH-deficient renal carcinoma', 'Disease', (63, 92)) ('SDH', 'Gene', (34, 37)) ('SDH', 'Gene', (63, 66)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (77, 92)) ('SDH-deficient renal carcinoma', 'Disease', 'MESH:C538614', (63, 92)) ('mutation', 'Var', (38, 46)) ('associated', 'Reg', (47, 57)) ('carcinoma', 'Phenotype', 'HP:0030731', (83, 92)) ('SDH', 'Gene', '6390', (34, 37)) 110378 25025441 Surgical pathologists with subspecialty interest in urologic pathology or in the pathology of SDH-deficient tumors from 15 institutions in North America, Europe, Asia, and Australia were contacted to submit cases of renal carcinoma occurring in the setting of proven SDH mutation or cases suspected to be associated with SDH deficiency on the basis of morphology, IHC, or a personal or family history of paragangliomas or SDH-deficient GIST. ('SDH', 'Gene', (267, 270)) ('SDH-deficient tumors', 'Disease', (94, 114)) ('paraganglioma', 'Phenotype', 'HP:0002668', (404, 417)) ('SDH', 'Gene', '6390', (94, 97)) ('SDH', 'Gene', (422, 425)) ('SDH deficiency', 'Disease', (321, 335)) ('mutation', 'Var', (271, 279)) ('carcinoma', 'Phenotype', 'HP:0030731', (222, 231)) ('SDH deficiency', 'Disease', 'MESH:D007153', (321, 335)) ('tumors', 'Phenotype', 'HP:0002664', (108, 114)) ('paragangliomas', 'Disease', 'MESH:D010235', (404, 418)) ('SDH-deficient GIST', 'Disease', 'MESH:D046152', (422, 440)) ('SDH-deficient GIST', 'Disease', (422, 440)) ('paragangliomas', 'Phenotype', 'HP:0002668', (404, 418)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('renal carcinoma', 'Disease', 'MESH:C538614', (216, 231)) ('SDH', 'Gene', '6390', (321, 324)) ('renal carcinoma', 'Disease', (216, 231)) ('SDH', 'Gene', (94, 97)) ('SDH', 'Gene', '6390', (267, 270)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (216, 231)) ('SDH-deficient tumors', 'Disease', 'MESH:D009369', (94, 114)) ('paragangliomas', 'Disease', (404, 418)) ('SDH', 'Gene', '6390', (422, 425)) ('SDH', 'Gene', (321, 324)) 110382 25025441 Cases with proven SDH mutation or with compatible morphology underwent IHC analysis for SDHB and SDHA, which was performed on whole sections with mouse monoclonal antibodies against SDHB (ABCAM ab14714, clone 21A11, dilution 1 in 100) and SDHA (Mitosciences Abcam MS204, clone 2E, dilution of 1 in 1000), -detailed methods previously described. ('mutation', 'Var', (22, 30)) ('SDH', 'Gene', '6390', (18, 21)) ('SDH', 'Gene', '6390', (97, 100)) ('SDHB', 'Gene', (88, 92)) ('SDHA', 'Gene', (97, 101)) ('SDH', 'Gene', '6390', (88, 91)) ('SDHB', 'Gene', '6390', (182, 186)) ('SDH', 'Gene', '6390', (239, 242)) ('SDHA', 'Gene', (239, 243)) ('SDH', 'Gene', '6390', (182, 185)) ('SDHA', 'Gene', '6389', (97, 101)) ('SDHA', 'Gene', '6389', (239, 243)) ('SDH', 'Gene', (18, 21)) ('SDH', 'Gene', (97, 100)) ('SDHB', 'Gene', (182, 186)) ('SDH', 'Gene', (88, 91)) ('SDH', 'Gene', (239, 242)) ('SDH', 'Gene', (182, 185)) ('mouse', 'Species', '10090', (146, 151)) ('SDHB', 'Gene', '6390', (88, 92)) 110432 25025441 Intratumoral mast cells were commonly highlighted with c-KIT IHC but were not appreciable as a conspicuous finding on routine hematoxylin and eosin sections. ('IHC', 'Var', (61, 64)) ('eosin', 'Chemical', 'MESH:D004801', (142, 147)) ('tumor', 'Disease', 'MESH:D009369', (5, 10)) ('c-KIT', 'Gene', (55, 60)) ('tumor', 'Phenotype', 'HP:0002664', (5, 10)) ('hematoxylin', 'Chemical', 'MESH:D006416', (126, 137)) ('tumor', 'Disease', (5, 10)) ('c-KIT', 'Gene', '3815', (55, 60)) 110449 25025441 Of the previously reported cases, 9 had undergone germline molecular testing and were found to harbor a pathogenic mutation in SDHB (8 cases) or SDHC (1 case):mutation data previously reported. ('pathogenic', 'Reg', (104, 114)) ('SDHB', 'Gene', '6390', (127, 131)) ('SDHB', 'Gene', (127, 131)) ('SDHC', 'Gene', (145, 149)) ('mutation', 'Var', (115, 123)) ('SDHC', 'Gene', '6391', (145, 149)) 110473 25025441 However, we caution that the study was not intended or designed to demonstrate that all renal carcinomas arising in the context of SDH mutation will show this morphology. ('renal carcinomas', 'Disease', 'MESH:C538614', (88, 104)) ('carcinoma', 'Phenotype', 'HP:0030731', (94, 103)) ('SDH', 'Gene', '6390', (131, 134)) ('carcinomas', 'Phenotype', 'HP:0030731', (94, 104)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (88, 103)) ('renal carcinomas', 'Disease', (88, 104)) ('renal carcinomas', 'Phenotype', 'HP:0005584', (88, 104)) ('mutation', 'Var', (135, 143)) ('SDH', 'Gene', (131, 134)) 110487 25025441 In fact, metastatic disease developed in 7 of 10 patients with ISUP nucleolar (nuclear) grade 3 or 4 nuclei or variant morphology. ('metastatic disease', 'CPA', (9, 27)) ('variant morphology', 'Var', (111, 129)) ('developed', 'Reg', (28, 37)) ('patients', 'Species', '9606', (49, 57)) 110491 25025441 Although there is insufficient evidence to recommend adjuvant treatment, patients with high-grade neoplasms (variant morphology, sarcomatoid change, coagulative necrosis, or high ISUP nucleolar [nuclear] grade) should be considered at high risk for metastasis, and consideration should be given to more radical treatments in these patients. ('high ISUP', 'Var', (174, 183)) ('neoplasms', 'Phenotype', 'HP:0002664', (98, 107)) ('sarcomatoid change', 'Phenotype', 'HP:0100242', (129, 147)) ('neoplasm', 'Phenotype', 'HP:0002664', (98, 106)) ('coagulative necrosis', 'Disease', (149, 169)) ('coagulative necrosis', 'Phenotype', 'HP:0010885', (149, 169)) ('metastasis', 'CPA', (249, 259)) ('neoplasms', 'Disease', (98, 107)) ('coagulative necrosis', 'Disease', 'MESH:D009336', (149, 169)) ('sarcomatoid change', 'Disease', 'MESH:C538614', (129, 147)) ('sarcomatoid change', 'Disease', (129, 147)) ('neoplasms', 'Disease', 'MESH:D009369', (98, 107)) ('patients', 'Species', '9606', (73, 81)) ('patients', 'Species', '9606', (331, 339)) 110492 25025441 We note that in 2 patients metastasis occurred >5 years after the initial presentation, and therefore extended (if not lifelong) follow-up is required for late recurrences, as well as metachronous disease and other syndromic manifestations of germline SDH mutation (GIST, paraganglioma, pituitary adenoma). ('pituitary adenoma', 'Phenotype', 'HP:0002893', (287, 304)) ('metachronous disease', 'Disease', (184, 204)) ('paraganglioma', 'Phenotype', 'HP:0002668', (272, 285)) ('mutation', 'Var', (256, 264)) ('SDH', 'Gene', '6390', (252, 255)) ('metachronous disease', 'Disease', 'MESH:D016609', (184, 204)) ('paraganglioma', 'Disease', (272, 285)) ('pituitary adenoma', 'Disease', (287, 304)) ('patients', 'Species', '9606', (18, 26)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (287, 304)) ('SDH', 'Gene', (252, 255)) ('paraganglioma', 'Disease', 'MESH:D010235', (272, 285)) ('metastasis', 'CPA', (27, 37)) 110496 25025441 This is similar to the findings in SDH-deficient paragangliomas and pituitary adenomas, where the presence of negative staining for SDHB almost always signifies germline mutation of one of the components of the mitochondrial complex 2 (SDHA, SDHB, SDHC, SDHD, SDHAF2), rather than being due solely to somatic inactivation. ('paragangliomas', 'Phenotype', 'HP:0002668', (49, 63)) ('paraganglioma', 'Phenotype', 'HP:0002668', (49, 62)) ('SDHC', 'Gene', '6391', (248, 252)) ('SDHB', 'Gene', '6390', (132, 136)) ('SDHD', 'Disease', (254, 258)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (68, 86)) ('SDH-deficient paragangliomas', 'Disease', 'MESH:D010235', (35, 63)) ('SDHB', 'Gene', '6390', (242, 246)) ('SDHB', 'Gene', (132, 136)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (68, 85)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (68, 86)) ('pituitary adenomas', 'Disease', (68, 86)) ('SDHC', 'Gene', (248, 252)) ('SDHD', 'Disease', 'None', (254, 258)) ('SDHAF2', 'Gene', '54949', (260, 266)) ('SDH-deficient paragangliomas', 'Disease', (35, 63)) ('SDHAF2', 'Gene', (260, 266)) ('SDHA', 'Gene', (236, 240)) ('SDHA', 'Gene', (260, 264)) ('signifies', 'Reg', (151, 160)) ('SDHA', 'Gene', '6389', (236, 240)) ('SDHB', 'Gene', (242, 246)) ('germline mutation', 'Var', (161, 178)) ('SDHA', 'Gene', '6389', (260, 264)) 110497 25025441 In fact, we are aware of only 2 cases of SDH-deficient paraganglioma and 1 case of SDH-deficient pituitary adenoma in which double-hit SDH inactivation has occurred in the absence of germline mutation. ('SDH-deficient pituitary adenoma', 'Disease', 'MESH:D010911', (83, 114)) ('SDH-deficient paraganglioma', 'Disease', (41, 68)) ('SDH-deficient paraganglioma', 'Disease', 'MESH:D010235', (41, 68)) ('SDH', 'Gene', '6390', (83, 86)) ('deficient pituitary adenoma', 'Phenotype', 'HP:0010627', (87, 114)) ('SDH-deficient pituitary adenoma', 'Disease', (83, 114)) ('SDH', 'Gene', (41, 44)) ('SDH', 'Gene', '6390', (135, 138)) ('SDH', 'Gene', (83, 86)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (97, 114)) ('paraganglioma', 'Phenotype', 'HP:0002668', (55, 68)) ('SDH', 'Gene', (135, 138)) ('inactivation', 'Var', (139, 151)) ('SDH', 'Gene', '6390', (41, 44)) 110499 25025441 However, our findings suggest that, similar to paraganglioma and pituitary adenoma, it is likely that most, perhaps almost all, SDH-deficient renal carcinomas will be associated with germline mutation of one of the SDH genes. ('germline mutation', 'Var', (183, 200)) ('SDH', 'Gene', '6390', (128, 131)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (142, 157)) ('paraganglioma', 'Phenotype', 'HP:0002668', (47, 60)) ('carcinoma', 'Phenotype', 'HP:0030731', (148, 157)) ('renal carcinomas', 'Phenotype', 'HP:0005584', (142, 158)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (65, 82)) ('carcinomas', 'Phenotype', 'HP:0030731', (148, 158)) ('SDH', 'Gene', '6390', (215, 218)) ('SDH-deficient renal carcinomas', 'Disease', 'MESH:C538614', (128, 158)) ('SDH', 'Gene', (128, 131)) ('SDH-deficient renal carcinomas', 'Disease', (128, 158)) ('associated', 'Reg', (167, 177)) ('paraganglioma and pituitary adenoma', 'Disease', 'MESH:D010911', (47, 82)) ('SDH', 'Gene', (215, 218)) 110500 25025441 Therefore, the diagnosis of SDH-deficient renal carcinoma can be considered an absolute indication for germline SDH mutation testing. ('SDH-deficient renal carcinoma', 'Disease', (28, 57)) ('SDH', 'Gene', (112, 115)) ('SDH', 'Gene', '6390', (28, 31)) ('mutation', 'Var', (116, 124)) ('SDH-deficient renal carcinoma', 'Disease', 'MESH:C538614', (28, 57)) ('SDH', 'Gene', (28, 31)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (42, 57)) ('SDH', 'Gene', '6390', (112, 115)) ('carcinoma', 'Phenotype', 'HP:0030731', (48, 57)) 110501 25025441 No clear-cut genotype-phenotype correlations have emerged, although it is interesting to note in this series that 4 unrelated patients who developed renal carcinoma all harbored the same SDHB [c.423+1G>A] splice site mutation and that 2 of the patients with this mutation developed multifocal disease. ('SDHB', 'Gene', '6390', (187, 191)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (149, 164)) ('carcinoma', 'Phenotype', 'HP:0030731', (155, 164)) ('SDHB', 'Gene', (187, 191)) ('multifocal disease', 'Disease', (282, 300)) ('multifocal disease', 'Disease', 'None', (282, 300)) ('developed', 'Reg', (272, 281)) ('renal carcinoma', 'Disease', 'MESH:C538614', (149, 164)) ('patients', 'Species', '9606', (126, 134)) ('[c.423+1G>A]', 'Var', (192, 204)) ('c.423+1G>A', 'Mutation', 'rs398122805', (193, 203)) ('renal carcinoma', 'Disease', (149, 164)) ('patients', 'Species', '9606', (244, 252)) 110502 25025441 Although SDH-deficient renal carcinoma shows an extremely strong correlation with germline SDH mutation, we believe that IHC remains a phenotype test rather than a genotype test, and it is likely that not all SDHB IHC-negative tumors will be shown to have SDH mutations using current technology. ('SDH', 'Gene', (91, 94)) ('SDH', 'Gene', (209, 212)) ('SDH', 'Gene', '6390', (9, 12)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (23, 38)) ('SDH', 'Gene', (256, 259)) ('tumors', 'Phenotype', 'HP:0002664', (227, 233)) ('SDH', 'Gene', (9, 12)) ('tumor', 'Phenotype', 'HP:0002664', (227, 232)) ('mutation', 'Var', (95, 103)) ('carcinoma', 'Phenotype', 'HP:0030731', (29, 38)) ('tumors', 'Disease', (227, 233)) ('SDH', 'Gene', '6390', (91, 94)) ('SDHB', 'Gene', '6390', (209, 213)) ('SDH', 'Gene', '6390', (209, 212)) ('SDH-deficient renal carcinoma', 'Disease', 'MESH:C538614', (9, 38)) ('tumors', 'Disease', 'MESH:D009369', (227, 233)) ('SDH-deficient renal carcinoma', 'Disease', (9, 38)) ('SDH', 'Gene', '6390', (256, 259)) ('SDHB', 'Gene', (209, 213)) 110506 25025441 The extremely high rate of germline mutation in the SDH subunits in SDH renal carcinoma is different to that found in SDH-deficient GIST, in which approximately 30% of cases are associated with SDHA mutation, and 10% to 20% of cases are associated with mutations in the other SDH subunits (SDHB, SDHC, or SDHD), leaving the mechanism of SDH deficiency uncertain in up to half of cases. ('SDH', 'Gene', (305, 308)) ('SDH', 'Gene', (290, 293)) ('SDH', 'Gene', (68, 71)) ('SDH', 'Gene', (296, 299)) ('SDHA', 'Gene', '6389', (194, 198)) ('SDH', 'Gene', (52, 55)) ('SDH', 'Gene', (337, 340)) ('SDHC', 'Gene', '6391', (296, 300)) ('SDH deficiency', 'Disease', (337, 351)) ('SDH', 'Gene', (194, 197)) ('SDH deficiency', 'Disease', 'MESH:D007153', (337, 351)) ('SDH renal carcinoma', 'Disease', (68, 87)) ('SDHB', 'Gene', '6390', (290, 294)) ('associated', 'Reg', (237, 247)) ('carcinoma', 'Phenotype', 'HP:0030731', (78, 87)) ('SDHD', 'Disease', 'None', (305, 309)) ('SDH', 'Gene', '6390', (276, 279)) ('SDH', 'Gene', '6390', (118, 121)) ('SDHC', 'Gene', (296, 300)) ('mutation', 'Var', (199, 207)) ('SDH', 'Gene', '6390', (305, 308)) ('SDHB', 'Gene', (290, 294)) ('SDH', 'Gene', '6390', (290, 293)) ('SDH', 'Gene', (118, 121)) ('SDH', 'Gene', '6390', (68, 71)) ('SDH', 'Gene', (276, 279)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (72, 87)) ('SDH', 'Gene', '6390', (296, 299)) ('associated', 'Reg', (178, 188)) ('SDH renal carcinoma', 'Disease', 'MESH:C538614', (68, 87)) ('SDH', 'Gene', '6390', (52, 55)) ('SDH', 'Gene', '6390', (337, 340)) ('SDH-deficient GIST', 'Disease', 'MESH:D046152', (118, 136)) ('SDH-deficient GIST', 'Disease', (118, 136)) ('SDH', 'Gene', '6390', (194, 197)) ('SDHA', 'Gene', (194, 198)) ('SDHD', 'Disease', (305, 309)) 110515 25025441 SDH-deficient renal carcinoma may be associated with high ISUP nucleolar (nuclear) grade, coagulative necrosis or sarcomatoid transformation, in which case the development of metastatic disease is much more likely. ('SDH-deficient renal carcinoma', 'Disease', (0, 29)) ('coagulative necrosis', 'Disease', (90, 110)) ('coagulative necrosis', 'Phenotype', 'HP:0010885', (90, 110)) ('high', 'Var', (53, 57)) ('coagulative necrosis', 'Disease', 'MESH:D009336', (90, 110)) ('SDH-deficient renal carcinoma', 'Disease', 'MESH:C538614', (0, 29)) ('sarcomatoid transformation', 'Disease', 'MESH:C538614', (114, 140)) ('sarcomatoid transformation', 'Disease', (114, 140)) ('associated', 'Reg', (37, 47)) ('carcinoma', 'Phenotype', 'HP:0030731', (20, 29)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (14, 29)) 110517 25025441 To date, all reported cases have been associated with germline mutations of the SDH genes. ('SDH', 'Gene', '6390', (80, 83)) ('SDH', 'Gene', (80, 83)) ('germline mutations', 'Var', (54, 72)) ('associated', 'Reg', (38, 48)) 110556 25141773 The described mutations in SDHB, SDHC and SDHD genes cause one out of four paraganglioma syndromes with similar clinical features. ('cause', 'Reg', (53, 58)) ('SDHC', 'Gene', '6391', (33, 37)) ('paraganglioma', 'Phenotype', 'HP:0002668', (75, 88)) ('SDHB', 'Gene', '6390', (27, 31)) ('SDHC', 'Gene', (33, 37)) ('paraganglioma syndromes', 'Disease', 'MESH:D010235', (75, 98)) ('SDHD', 'Gene', (42, 46)) ('SDHB', 'Gene', (27, 31)) ('mutations', 'Var', (14, 23)) ('paraganglioma syndromes', 'Disease', (75, 98)) 110644 22145144 Abdominal imaging is performed 24-72 hours after IV administration of I-131 MIBG, whereas imaging is performed at 4 and 24 hours after injection of In-111 octreotide. ('In-111 octreotide', 'Chemical', 'MESH:C094279', (148, 165)) ('I-131 MIBG', 'Chemical', '-', (70, 80)) ('MIBG', 'Var', (76, 80)) ('I-131 MIBG', 'Var', (70, 80)) 110647 22145144 50% of pheochromocytomas are visualized with both agents, 25% of pheochromocytomas are seen only with I-131 MIBG and another 25% are seen only with In-111 octreotide. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (65, 82)) ('I-131', 'Var', (102, 107)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (65, 81)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (65, 82)) ('pheochromocytomas', 'Disease', (65, 82)) ('pheochromocytomas', 'Disease', (7, 24)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (7, 24)) ('In-111 octreotide', 'Chemical', 'MESH:C094279', (148, 165)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (7, 23)) ('I-131 MIBG', 'Chemical', '-', (102, 112)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (7, 24)) 110671 22145144 The 17 alpha-hydroxylase deficiency is rarer and leads to diminished production of cortisol and sex steroids. ('steroids', 'Chemical', 'MESH:D013256', (100, 108)) ('sex steroids', 'MPA', (96, 108)) ('diminished production of cortisol', 'Phenotype', 'HP:0008163', (58, 91)) ('deficiency', 'Var', (25, 35)) ('diminished', 'NegReg', (58, 68)) ('cortisol', 'Chemical', 'MESH:D006854', (83, 91)) ('production of cortisol', 'MPA', (69, 91)) 110845 19434288 Since Infratemporal fossa approach inevitably encounters facial palsy due to transposition of facial nerve, facial palsy of grade better than H-B Grade II was excluded from the criteria of complications. ('encounters', 'Reg', (46, 56)) ('facial palsy', 'Disease', (57, 69)) ('facial palsy', 'Disease', 'MESH:D010243', (108, 120)) ('facial palsy', 'Phenotype', 'HP:0010628', (57, 69)) ('facial palsy', 'Phenotype', 'HP:0010628', (108, 120)) ('facial palsy', 'Disease', (108, 120)) ('facial palsy', 'Disease', 'MESH:D010243', (57, 69)) ('transposition', 'Var', (77, 90)) 110950 32664294 Dysfunction of these crucial processes through aberrant Rho GTPases signaling can favor distinct steps of cancer progression from tumor initiation to tumor cell proliferation, invasion, and metastasis. ('aberrant', 'Var', (47, 55)) ('Dysfunction', 'Var', (0, 11)) ('metastasis', 'Disease', 'MESH:D009362', (190, 200)) ('metastasis', 'Disease', (190, 200)) ('tumor', 'Disease', 'MESH:D009369', (130, 135)) ('tumor', 'Disease', 'MESH:D009369', (150, 155)) ('cancer', 'Disease', 'MESH:D009369', (106, 112)) ('favor', 'PosReg', (82, 87)) ('rat', 'Species', '10116', (168, 171)) ('cancer', 'Disease', (106, 112)) ('tumor', 'Phenotype', 'HP:0002664', (150, 155)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('Rho GTPases', 'Protein', (56, 67)) ('GTP', 'Chemical', 'MESH:D006160', (60, 63)) ('tumor', 'Disease', (130, 135)) ('tumor', 'Disease', (150, 155)) ('invasion', 'CPA', (176, 184)) ('cancer', 'Phenotype', 'HP:0002664', (106, 112)) 110955 32664294 The first idea that usually comes to mind regarding the origin of tumors is genetic mutations. ('genetic mutations', 'Var', (76, 93)) ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('tumors', 'Phenotype', 'HP:0002664', (66, 72)) ('tumors', 'Disease', (66, 72)) ('tumors', 'Disease', 'MESH:D009369', (66, 72)) 110957 32664294 However, progress in advanced sequencing and better access to human samples allowed, in the last decade, the uncovering of many mutations in Rho GTPases (for review, see). ('mutations', 'Var', (128, 137)) ('human', 'Species', '9606', (62, 67)) ('GTP', 'Chemical', 'MESH:D006160', (145, 148)) ('Rho GTPases', 'Gene', (141, 152)) 110958 32664294 By searching the literature, we inventoried about 30 mutations or polymorphisms directly affecting Rho GTPases in NETs essentially in pheochromocytoma, paraganglioma, adrenocortical adenoma, small cell lung cancer, and Merkel cell carcinoma (Table 1, Figure 1, and Table S1). ('adrenocortical adenoma', 'Phenotype', 'HP:0008256', (167, 189)) ('carcinoma', 'Phenotype', 'HP:0030731', (231, 240)) ('small cell lung cancer', 'Disease', 'MESH:D055752', (191, 213)) ('lung cancer', 'Phenotype', 'HP:0100526', (202, 213)) ('pheochromocytoma', 'Disease', (134, 150)) ('small cell lung cancer', 'Disease', (191, 213)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (134, 150)) ('Rho GTPases', 'Gene', (99, 110)) ('adenoma', 'Disease', (182, 189)) ('rat', 'Species', '10116', (21, 24)) ('cancer', 'Phenotype', 'HP:0002664', (207, 213)) ('paraganglioma', 'Disease', (152, 165)) ('adenoma', 'Disease', 'MESH:D000236', (182, 189)) ('paraganglioma', 'Disease', 'MESH:D010235', (152, 165)) ('small cell lung cancer', 'Phenotype', 'HP:0030357', (191, 213)) ('Merkel cell carcinoma', 'Disease', 'MESH:D015266', (219, 240)) ('mutations', 'Var', (53, 62)) ('GTP', 'Chemical', 'MESH:D006160', (103, 106)) ('NETs', 'Phenotype', 'HP:0100634', (114, 118)) ('paraganglioma', 'Phenotype', 'HP:0002668', (152, 165)) ('Merkel cell carcinoma', 'Disease', (219, 240)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (134, 150)) 110959 32664294 Surprisingly, besides the mutants Y42C-RhoA and P29S-Rac1, the impact of the other mutations on Rho activity and function remains unknown. ('P29S', 'Mutation', 'rs1057519874', (48, 52)) ('Y42C-RhoA', 'Var', (34, 43)) ('P29S-Rac1', 'Var', (48, 57)) ('Y42C', 'Mutation', 'rs1057519954', (34, 38)) 110960 32664294 P29S-Rac1 is a fast cycling mutant with spontaneous activation and therefore acts as a gain-of-function mutation. ('P29S', 'Mutation', 'rs1057519874', (0, 4)) ('P29S-Rac1', 'Var', (0, 9)) ('gain-of-function', 'PosReg', (87, 103)) ('activation', 'PosReg', (52, 62)) 110961 32664294 The Y42C mutation reduces both intrinsic- and GAP-stimulated GTP hydrolysis of RhoA, thereby enhancing the active GTP-bound form. ('GTP', 'Chemical', 'MESH:D006160', (61, 64)) ('Y42C', 'Mutation', 'rs1057519954', (4, 8)) ('reduces', 'NegReg', (18, 25)) ('active GTP-bound form', 'MPA', (107, 128)) ('GTP', 'Chemical', 'MESH:D006160', (114, 117)) ('enhancing', 'PosReg', (93, 102)) ('GTP hydrolysis of RhoA', 'MPA', (61, 83)) ('Y42C', 'Var', (4, 8)) 110962 32664294 proposed that the Y42C mutation decreased the level of the activated GTP-associated form of RhoA. ('Y42C', 'Var', (18, 22)) ('Y42C', 'Mutation', 'rs1057519954', (18, 22)) ('GTP', 'Chemical', 'MESH:D006160', (69, 72)) ('level', 'MPA', (46, 51)) ('activated GTP-associated form of RhoA', 'MPA', (59, 96)) ('decreased', 'NegReg', (32, 41)) 110963 32664294 Beside mutations, variation in the expression levels of Rho GTPases has been described in many different types of tumors and at various stages of tumorigenesis (for previous key review articles, see). ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('tumor', 'Disease', (146, 151)) ('expression levels', 'MPA', (35, 52)) ('tumor', 'Disease', (114, 119)) ('described', 'Reg', (77, 86)) ('tumors', 'Disease', (114, 120)) ('tumors', 'Disease', 'MESH:D009369', (114, 120)) ('tumors', 'Phenotype', 'HP:0002664', (114, 120)) ('tumor', 'Disease', 'MESH:D009369', (146, 151)) ('GTP', 'Chemical', 'MESH:D006160', (60, 63)) ('Rho GTPases', 'Protein', (56, 67)) ('mutations', 'Var', (7, 16)) 110969 32664294 Most of these studies reported that deregulation of Rho GTPases pathways contributes to disease progression. ('deregulation', 'Var', (36, 48)) ('GTP', 'Chemical', 'MESH:D006160', (56, 59)) ('Rho GTPases pathways', 'Pathway', (52, 72)) ('disease progression', 'CPA', (88, 107)) 110970 32664294 Conversely, the most aggressive neuroblastoma presenting MYCN amplification also displayed down-regulation of Cdc42 expression through the control of N-myc, indicating that Rho GTPases overexpression is not always correlated with poor prognosis. ('expression', 'MPA', (116, 126)) ('N-myc', 'Gene', (150, 155)) ('down-regulation', 'NegReg', (91, 106)) ('Cdc42', 'Gene', (110, 115)) ('aggressive neuroblastoma', 'Disease', 'MESH:D009447', (21, 45)) ('N-myc', 'Gene', '4613', (150, 155)) ('GTP', 'Chemical', 'MESH:D006160', (177, 180)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (32, 45)) ('amplification', 'Var', (62, 75)) ('aggressive neuroblastoma', 'Disease', (21, 45)) ('MYCN', 'Gene', (57, 61)) ('MYCN', 'Gene', '4613', (57, 61)) 110980 32664294 Modulating the expression of guanine nucleotide-exchange factors (GEFs), which stimulate the exchange of GDP for GTP, as well as that of GTPases-activating proteins (GAPs) that catalyze GTP hydrolysis, are expected to alter Rho GTPases activity. ('Modulating', 'Var', (0, 10)) ('guanine nucleotide', 'Chemical', 'MESH:D006150', (29, 47)) ('GTP', 'Chemical', 'MESH:D006160', (113, 116)) ('alter', 'Reg', (218, 223)) ('GTP', 'Chemical', 'MESH:D006160', (137, 140)) ('Rho GTPases', 'Enzyme', (224, 235)) ('GDP for GTP', 'MPA', (105, 116)) ('exchange', 'MPA', (93, 101)) ('stimulate', 'PosReg', (79, 88)) ('GTP', 'Chemical', 'MESH:D006160', (228, 231)) ('activity', 'MPA', (236, 244)) ('GDP', 'Chemical', 'MESH:D006153', (105, 108)) ('GTP', 'Chemical', 'MESH:D006160', (186, 189)) 110985 32664294 Knock-down of FGD4 in PC-3 and LNCaP-104S prostate cell lines inhibited cell proliferation, cell cycle progression, and cell migration. ('LNCaP-104S', 'CellLine', 'CVCL:M126', (31, 41)) ('rat', 'Species', '10116', (84, 87)) ('Knock-down', 'Var', (0, 10)) ('FGD4', 'Gene', (14, 18)) ('cell proliferation', 'CPA', (72, 90)) ('cell cycle progression', 'CPA', (92, 114)) ('inhibited', 'NegReg', (62, 71)) ('PC-3', 'CellLine', 'CVCL:0035', (22, 26)) ('FGD4', 'Gene', '121512', (14, 18)) ('rat', 'Species', '10116', (128, 131)) ('cell migration', 'CPA', (120, 134)) 110989 32664294 Strikingly, we found a tremendous amount of mutations and polymorphisms for Rho GEFs and GAPs in NETs, which seem to exceed those found for Rho GTPase genes by far (Table S2). ('GTP', 'Chemical', 'MESH:D006160', (144, 147)) ('polymorphisms', 'Var', (58, 71)) ('Rho GEFs', 'Gene', (76, 84)) ('NETs', 'Gene', (97, 101)) ('mutations', 'Var', (44, 53)) ('NETs', 'Phenotype', 'HP:0100634', (97, 101)) 110990 32664294 However, most of the time, how these mutations and polymorphisms affect Rho GTPases activity, their consequences on Rho GTPases signaling, and their impact on tumorigenesis remain completely unknown and will require further investigations. ('affect', 'Reg', (65, 71)) ('GTP', 'Chemical', 'MESH:D006160', (120, 123)) ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('tumor', 'Disease', (159, 164)) ('mutations', 'Var', (37, 46)) ('activity', 'MPA', (84, 92)) ('GTP', 'Chemical', 'MESH:D006160', (76, 79)) ('Rho', 'Protein', (72, 75)) ('polymorphisms', 'Var', (51, 64)) ('tumor', 'Disease', 'MESH:D009369', (159, 164)) 111000 32664294 Consequently, inhibition of RhoA during exocytosis was postulated to be an essential step in promoting depolymerization of the cortical actin fence. ('promoting', 'PosReg', (93, 102)) ('actin', 'Gene', '528168', (136, 141)) ('inhibition', 'Var', (14, 24)) ('actin', 'Gene', (136, 141)) 111016 32664294 In rat pheochromocytoma cells, we demonstrated that short interfering RNA (siRNA)-based knockdown of Rac1 inhibits hormone secretion by preventing the secretagogue-induced activation of phospholipase D1 (PLD1). ('inhibits', 'NegReg', (106, 114)) ('secretagogue-induced activation', 'MPA', (151, 182)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (7, 23)) ('hormone secretion', 'MPA', (115, 132)) ('phospholipase D1', 'Gene', (186, 202)) ('knockdown', 'Var', (88, 97)) ('phospholipase D1', 'Gene', '25096', (186, 202)) ('rat', 'Species', '10116', (3, 6)) ('preventing', 'NegReg', (136, 146)) ('PLD1', 'Gene', (204, 208)) ('pheochromocytoma', 'Disease', (7, 23)) ('rat', 'Species', '10116', (41, 44)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (7, 23)) ('PLD1', 'Gene', '25096', (204, 208)) ('Rac1', 'Gene', (101, 105)) 111020 32664294 ABCA12 silencing in pancreatic beta cells impaired secretory granule maturation and fusion, most likely through an altered cellular distribution of cholesterol between insulin granules and the plasma membrane lipid rafts required for secretion. ('lipid', 'Chemical', 'MESH:D008055', (209, 214)) ('impaired', 'NegReg', (42, 50)) ('fusion', 'CPA', (84, 90)) ('ABCA12', 'Gene', (0, 6)) ('insulin', 'Gene', (168, 175)) ('altered', 'Reg', (115, 122)) ('ABCA12', 'Gene', '26154', (0, 6)) ('pancreatic beta cells impaired', 'Phenotype', 'HP:0006274', (20, 50)) ('insulin', 'Gene', '3630', (168, 175)) ('beta cells impaired', 'Phenotype', 'HP:0006279', (31, 50)) ('cholesterol', 'Chemical', 'MESH:D002784', (148, 159)) ('silencing', 'Var', (7, 16)) ('rat', 'Species', '10116', (73, 76)) ('secretory granule maturation', 'CPA', (51, 79)) 111021 32664294 Remarkably, loss of ABCA12 expression also prevents Cdc42 activation and the associated actin remodeling. ('activation', 'MPA', (58, 68)) ('prevents', 'NegReg', (43, 51)) ('ABCA12', 'Gene', (20, 26)) ('actin', 'Gene', (88, 93)) ('ABCA12', 'Gene', '26154', (20, 26)) ('Cdc42', 'Protein', (52, 57)) ('loss', 'Var', (12, 16)) ('actin', 'Gene', '528168', (88, 93)) 111025 32664294 How the level of PI4P on secretory granule membrane can impact secretion in currently unknown. ('PI4P', 'Chemical', 'MESH:C037178', (17, 21)) ('PI4P', 'Var', (17, 21)) ('impact', 'Reg', (56, 62)) ('secretion', 'MPA', (63, 72)) 111027 32664294 Coping with levels of phosphatidylinositol 4-phosphate 5-kinase (PI4P-5kinase), the enzyme that generates PIP2 from PI4P, dramatically affected exocytosis in chromaffin and beta pancreatic cells. ('PI4P', 'Var', (116, 120)) ('PI4P-5kinase', 'Gene', (65, 77)) ('PI4P', 'Chemical', 'MESH:C037178', (116, 120)) ('chromaffin', 'Chemical', '-', (158, 168)) ('phosphatidylinositol 4-phosphate 5-kinase', 'Gene', (22, 63)) ('PI4P', 'Chemical', 'MESH:C037178', (65, 69)) ('phosphatidylinositol 4-phosphate 5-kinase', 'Gene', '79837', (22, 63)) ('PIP2', 'Chemical', 'MESH:D019269', (106, 110)) ('affected', 'Reg', (135, 143)) ('exocytosis in chromaffin', 'MPA', (144, 168)) ('rat', 'Species', '10116', (100, 103)) ('PI4P-5kinase', 'Gene', '79837', (65, 77)) 111038 32664294 Along the same line, inhibition of the RhoA/Rock pathway reduced neurotensin secretion in BON cells. ('neurotensin', 'Gene', (65, 76)) ('neurotensin', 'Gene', '4922', (65, 76)) ('inhibition', 'Var', (21, 31)) ('BON', 'CellLine', 'CVCL:3985', (90, 93)) ('reduced', 'NegReg', (57, 64)) ('RhoA/Rock pathway', 'Pathway', (39, 56)) 111041 32664294 Today, a clear effort has to be directed toward understanding how mutations or variations in expression levels of Rho GTPases, GEFs, and GAPs identified in NETs favor tumorigenesis. ('mutations', 'Var', (66, 75)) ('variations', 'Var', (79, 89)) ('expression levels', 'MPA', (93, 110)) ('tumor', 'Disease', 'MESH:D009369', (167, 172)) ('GTP', 'Chemical', 'MESH:D006160', (118, 121)) ('tumor', 'Phenotype', 'HP:0002664', (167, 172)) ('favor', 'PosReg', (161, 166)) ('tumor', 'Disease', (167, 172)) ('Rho', 'Gene', (114, 117)) ('NETs', 'Phenotype', 'HP:0100634', (156, 160)) 111046 32664294 The following are available online at , Table S1: Mutations and polymorphisms of Rho GTPases in NETs, Table S2: Mutations and polymorphisms of Rho GTPases GEFs and GAPs in NETs. ('GTP', 'Chemical', 'MESH:D006160', (85, 88)) ('GTP', 'Chemical', 'MESH:D006160', (147, 150)) ('polymorphisms', 'Var', (126, 139)) ('Mutations', 'Var', (112, 121)) ('Rho GTPases', 'Gene', (143, 154)) ('NETs', 'Phenotype', 'HP:0100634', (96, 100)) ('NETs', 'Phenotype', 'HP:0100634', (172, 176)) 111048 32411094 Variability in Medullary Thyroid Carcinoma in RET L790F Carriers: A Case Comparison Study of Index Patients Background: Previous studies have suggested that the variability in age of onset and aggressiveness of medullary thyroid carcinoma (MTC) in patients with multiple endocrine neoplasia type 2A (MEN 2A) carrying the same REarranged during Transfection (RET) mutation may be caused by additional RET germline variants or somatic variants. ('RET', 'Gene', '5979', (358, 361)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (211, 238)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (221, 238)) ('Medullary Thyroid Carcinoma', 'Phenotype', 'HP:0002865', (15, 42)) ('neoplasia', 'Phenotype', 'HP:0002664', (281, 290)) ('RET', 'Gene', (400, 403)) ('aggressiveness', 'Phenotype', 'HP:0000718', (193, 207)) ('carcinoma', 'Phenotype', 'HP:0030731', (229, 238)) ('Thyroid Carcinoma', 'Disease', 'MESH:D013964', (25, 42)) ('RET', 'Gene', '5979', (46, 49)) ('RET', 'Gene', (358, 361)) ('L790F', 'Mutation', 'rs75030001', (50, 55)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (271, 290)) ('Thyroid Carcinoma', 'Disease', (25, 42)) ('aggressiveness of medullary thyroid carcinoma', 'Disease', 'MESH:C536914', (193, 238)) ('patients', 'Species', '9606', (248, 256)) ('MEN 2A', 'Gene', '5979', (300, 306)) ('Thyroid Carcinoma', 'Phenotype', 'HP:0002890', (25, 42)) ('Carcinoma', 'Phenotype', 'HP:0030731', (33, 42)) ('RET', 'Gene', (46, 49)) ('MTC', 'Phenotype', 'HP:0002865', (240, 243)) ('multiple endocrine neoplasia type 2A', 'Gene', (262, 298)) ('mutation', 'Var', (363, 371)) ('multiple endocrine neoplasia type 2A', 'Gene', '5979', (262, 298)) ('REarranged during Transfection', 'Gene', '5979', (326, 356)) ('RET', 'Gene', '5979', (400, 403)) ('MEN 2A', 'Gene', (300, 306)) ('aggressiveness of medullary thyroid carcinoma', 'Disease', (193, 238)) ('REarranged during Transfection', 'Gene', (326, 356)) 111049 32411094 Methods: This study was a retrospective case comparison study of all MEN 2A index patients (n = 2) with the RET L790F germline mutation in Denmark. ('L790F', 'Var', (112, 117)) ('RET', 'Gene', '5979', (108, 111)) ('patients', 'Species', '9606', (82, 90)) ('RET', 'Gene', (108, 111)) ('Denmark', 'Gene', (139, 146)) ('MEN 2A', 'Gene', '5979', (69, 75)) ('MEN 2A', 'Gene', (69, 75)) ('L790F', 'Mutation', 'rs75030001', (112, 117)) 111053 32411094 Conclusions: We could not confirm the previously reported finding of a somatic RET variant as likely responsible for the early onset and aggressiveness of MTC in a RET germline mutation carrier. ('aggressiveness', 'Disease', 'MESH:D001523', (137, 151)) ('variant', 'Var', (83, 90)) ('RET', 'Gene', '5979', (79, 82)) ('RET', 'Gene', (164, 167)) ('MTC', 'Phenotype', 'HP:0002865', (155, 158)) ('aggressiveness', 'Disease', (137, 151)) ('RET', 'Gene', (79, 82)) ('aggressiveness', 'Phenotype', 'HP:0000718', (137, 151)) ('RET', 'Gene', '5979', (164, 167)) 111055 32411094 We did, however, identify a somatic FLT3 R387Q variant with an unknown potential as genetic modifier. ('R387Q', 'Mutation', 'rs751562024', (41, 46)) ('FLT3', 'Gene', '2322', (36, 40)) ('R387Q', 'Var', (41, 46)) ('FLT3', 'Gene', (36, 40)) 111056 32411094 Further large-scale studies are needed to investigate genetic modifiers in RET L790F carriers. ('RET', 'Gene', (75, 78)) ('L790F', 'Var', (79, 84)) ('RET', 'Gene', '5979', (75, 78)) ('L790F', 'Mutation', 'rs75030001', (79, 84)) 111060 32411094 MEN 2A and 2B are caused by germline mutations of the REarranged during Transfection (RET) proto-oncogene. ('RET', 'Gene', '5979', (86, 89)) ('REarranged during Transfection', 'Gene', '5979', (54, 84)) ('MEN 2A and 2B', 'Gene', '5979', (0, 13)) ('RET', 'Gene', (86, 89)) ('germline mutations', 'Var', (28, 46)) ('caused by', 'Reg', (18, 27)) ('REarranged during Transfection', 'Gene', (54, 84)) 111061 32411094 Despite the recognition of strong genotype-phenotype correlations, several studies have observed a substantial inter- and intra-familial variability in the age of onset and aggressiveness of MTC among carriers of the same mutation. ('aggressiveness', 'Phenotype', 'HP:0000718', (173, 187)) ('mutation', 'Var', (222, 230)) ('aggressiveness', 'Disease', 'MESH:D001523', (173, 187)) ('MTC', 'Phenotype', 'HP:0002865', (191, 194)) ('MTC', 'Disease', (191, 194)) ('aggressiveness', 'Disease', (173, 187)) 111062 32411094 Some authors have suggested that certain RET germline variants (IVS1-126G>T, IVS8+82A>G; 85-86 insC, G691S, L769L, S836S, S904S) in combination with a RET germline mutation may modify the age of onset and aggressiveness of MTC in MEN 2 patients. ('85-86 insC', 'Mutation', 'c.85_86insC', (89, 99)) ('MTC', 'Phenotype', 'HP:0002865', (223, 226)) ('S836S', 'Mutation', 'rs1800862', (115, 120)) ('RET', 'Gene', '5979', (151, 154)) ('patients', 'Species', '9606', (236, 244)) ('RET', 'Gene', (41, 44)) ('G691S', 'Mutation', 'rs1799939', (101, 106)) ('L769L', 'Mutation', 'rs1800861', (108, 113)) ('S904S', 'Var', (122, 127)) ('RET', 'Gene', (151, 154)) ('S836S', 'Var', (115, 120)) ('MTC', 'Disease', (223, 226)) ('IVS8+82A>G', 'Var', (77, 87)) ('aggressiveness', 'Disease', (205, 219)) ('S904S', 'Mutation', 'rs1800863', (122, 127)) ('G691S', 'Var', (101, 106)) ('modify', 'Reg', (177, 183)) ('aggressiveness', 'Phenotype', 'HP:0000718', (205, 219)) ('IVS8+82A>G', 'Mutation', 'c.IVS8+82A>G', (77, 87)) ('IVS1-126G>T', 'Mutation', 'c.IVS1-126G>T', (64, 75)) ('aggressiveness', 'Disease', 'MESH:D001523', (205, 219)) ('L769L', 'Var', (108, 113)) ('IVS1-126G>T', 'Var', (64, 75)) ('RET', 'Gene', '5979', (41, 44)) 111063 32411094 To our knowledge, no such studies exist for MEN 2A patients carrying the RET L790F germline mutation. ('MEN 2A', 'Gene', '5979', (44, 50)) ('L790F', 'Var', (77, 82)) ('RET', 'Gene', '5979', (73, 76)) ('MEN 2A', 'Gene', (44, 50)) ('patients', 'Species', '9606', (51, 59)) ('RET', 'Gene', (73, 76)) ('L790F', 'Mutation', 'rs75030001', (77, 82)) 111064 32411094 Consequently, we conducted the first study of RET germline variants and somatic variants in L790F carriers, aiming to explain the MTC variability among index patients in Denmark. ('MTC', 'Phenotype', 'HP:0002865', (130, 133)) ('L790F', 'Var', (92, 97)) ('RET', 'Gene', '5979', (46, 49)) ('patients', 'Species', '9606', (158, 166)) ('L790F', 'Mutation', 'rs75030001', (92, 97)) ('RET', 'Gene', (46, 49)) 111065 32411094 This investigation is a retrospective case study of all MEN 2A index patients (n = 2) with the RET L790F germline mutation in Denmark. ('L790F', 'Mutation', 'rs75030001', (99, 104)) ('RET', 'Gene', (95, 98)) ('Denmark', 'Gene', (126, 133)) ('L790F', 'Var', (99, 104)) ('RET', 'Gene', '5979', (95, 98)) ('MEN 2A', 'Gene', '5979', (56, 62)) ('MEN 2A', 'Gene', (56, 62)) ('patients', 'Species', '9606', (69, 77)) 111070 32411094 Variant calling >5% frequency and filtering for 523 cancer relevant genes, including RET, H-RAS, K-RAS, and N-RAS using Ingenuity Variant Analysis (Qiagen). ('cancer', 'Phenotype', 'HP:0002664', (52, 58)) ('N-RAS', 'Gene', (108, 113)) ('RET', 'Gene', (85, 88)) ('H-RAS', 'Gene', (90, 95)) ('RET', 'Gene', '5979', (85, 88)) ('K-RAS', 'Gene', '3845', (97, 102)) ('N-RAS', 'Gene', '4893', (108, 113)) ('Variant calling', 'Var', (0, 15)) ('K-RAS', 'Gene', (97, 102)) ('cancer', 'Disease', (52, 58)) ('cancer', 'Disease', 'MESH:D009369', (52, 58)) ('H-RAS', 'Gene', '3265', (90, 95)) 111075 32411094 RET testing revealed the L790F (c.2370G>T) germline mutation. ('RET', 'Gene', '5979', (0, 3)) ('c.2370G>T', 'Mutation', 'rs75030001', (32, 41)) ('L790F', 'Mutation', 'rs75030001', (25, 30)) ('RET', 'Gene', (0, 3)) ('L790F (c.2370G>T', 'Var', (25, 41)) 111077 32411094 The father was tested negative for RET mutations, while the mother was positive for the L790F mutation. ('L790F', 'Var', (88, 93)) ('RET', 'Gene', (35, 38)) ('L790F', 'Mutation', 'rs75030001', (88, 93)) ('RET', 'Gene', '5979', (35, 38)) 111090 32411094 A RET test identified the L790F (c.2370G>T) germline mutation. ('L790F', 'Mutation', 'rs75030001', (26, 31)) ('RET', 'Gene', (2, 5)) ('c.2370G>T', 'Mutation', 'rs75030001', (33, 42)) ('RET', 'Gene', '5979', (2, 5)) ('L790F (c.2370G>T', 'Var', (26, 42)) 111094 32411094 The only RET germline variant and the only somatic variant exclusively identified in patient 1 were IVS12+47C>T and FLT3 R387Q (c.1160G>A), respectively. ('patient', 'Species', '9606', (85, 92)) ('c.1160G>A', 'Mutation', 'rs751562024', (128, 137)) ('IVS12+47C>T', 'Var', (100, 111)) ('R387Q', 'Mutation', 'rs751562024', (121, 126)) ('FLT3', 'Gene', '2322', (116, 120)) ('RET', 'Gene', '5979', (9, 12)) ('IVS12+47C>T', 'Mutation', 'c.IVS12+47C>T', (100, 111)) ('FLT3', 'Gene', (116, 120)) ('R387Q', 'Var', (121, 126)) ('RET', 'Gene', (9, 12)) 111095 32411094 The RET variants exclusively found in patient 2 were A432A, G691S, and S904S. ('A432A', 'Var', (53, 58)) ('G691S', 'Mutation', 'rs1799939', (60, 65)) ('patient', 'Species', '9606', (38, 45)) ('G691S', 'Var', (60, 65)) ('RET', 'Gene', (4, 7)) ('RET', 'Gene', '5979', (4, 7)) ('S904S', 'Var', (71, 76)) ('S904S', 'Mutation', 'rs1800863', (71, 76)) 111096 32411094 Despite thorough investigations, this study found no RET germline variants or other somatic variants that could convincingly explain the substantial variability in MTC phenotype seen in our two L790F index patients. ('RET', 'Gene', (53, 56)) ('L790F', 'Var', (194, 199)) ('patients', 'Species', '9606', (206, 214)) ('RET', 'Gene', '5979', (53, 56)) ('L790F', 'Mutation', 'rs75030001', (194, 199)) ('MTC', 'Phenotype', 'HP:0002865', (164, 167)) 111097 32411094 Patient 1 presented with MTC and lymph node metastases at 14 years old, several years earlier than the reported median age (57 years) for MTC presentation in L790F index patients. ('patients', 'Species', '9606', (170, 178)) ('L790F', 'Mutation', 'rs75030001', (158, 163)) ('MTC', 'Phenotype', 'HP:0002865', (25, 28)) ('MTC', 'Phenotype', 'HP:0002865', (138, 141)) ('metastases', 'Disease', (44, 54)) ('L790F', 'Var', (158, 163)) ('MTC', 'Disease', (25, 28)) ('metastases', 'Disease', 'MESH:D009362', (44, 54)) ('Patient', 'Species', '9606', (0, 7)) 111098 32411094 The only RET germline variant exclusively identified in this patient was IVS12+47C>T. ('patient', 'Species', '9606', (61, 68)) ('IVS12+47C>T', 'Var', (73, 84)) ('RET', 'Gene', '5979', (9, 12)) ('IVS12+47C>T', 'Mutation', 'c.IVS12+47C>T', (73, 84)) ('RET', 'Gene', (9, 12)) 111099 32411094 While other RET intron variants (IVS1-126G>T, IVS8+82A>G; 85-86 insC) have been associated to earlier age at MTC onset and the presence of lymph node metastases at diagnosis, no similar association has been reported for the RET IVS12+47C>T variant. ('IVS8+82A>G', 'Mutation', 'c.IVS8+82A>G', (46, 56)) ('RET', 'Gene', '5979', (224, 227)) ('IVS1-126G>T', 'Mutation', 'c.IVS1-126G>T', (33, 44)) ('85-86 insC', 'Mutation', 'c.85_86insC', (58, 68)) ('RET', 'Gene', '5979', (12, 15)) ('RET', 'Gene', (224, 227)) ('metastases', 'Disease', (150, 160)) ('IVS1-126G>T', 'Var', (33, 44)) ('metastases', 'Disease', 'MESH:D009362', (150, 160)) ('MTC', 'Phenotype', 'HP:0002865', (109, 112)) ('IVS8+82A>G', 'Var', (46, 56)) ('IVS12+47C>T', 'Mutation', 'c.IVS12+47C>T', (228, 239)) ('RET', 'Gene', (12, 15)) 111100 32411094 The only somatic variant exclusively found in patient 1 was FLT3 R387Q (c.1160G>A). ('patient', 'Species', '9606', (46, 53)) ('R387Q', 'Mutation', 'rs751562024', (65, 70)) ('FLT3', 'Gene', '2322', (60, 64)) ('R387Q', 'Var', (65, 70)) ('FLT3', 'Gene', (60, 64)) ('c.1160G>A', 'Mutation', 'rs751562024', (72, 81)) 111103 32411094 In most cases, this is due to activating mutations in the FLT3 gene but a significant number of leukemias are also characterized by a higher than normal expression level of un-mutated, wild-type FLT3, thus emphasizing the importance of FLT3 signaling perturbations in malignant transformation. ('mutations', 'Var', (41, 50)) ('FLT3', 'Gene', (58, 62)) ('leukemias', 'Disease', 'MESH:D007938', (96, 105)) ('higher', 'PosReg', (134, 140)) ('FLT3', 'Gene', '2322', (236, 240)) ('expression level', 'MPA', (153, 169)) ('FLT3', 'Gene', '2322', (195, 199)) ('FLT3', 'Gene', '2322', (58, 62)) ('FLT3', 'Gene', (236, 240)) ('leukemias', 'Phenotype', 'HP:0001909', (96, 105)) ('FLT3', 'Gene', (195, 199)) ('leukemias', 'Disease', (96, 105)) 111105 32411094 R387 is situated in the D4 domain of FLT3 interacting with FL (Figure 1) and is part of the interface of D4 taking part in homodimerization. ('R387', 'Var', (0, 4)) ('FL', 'Chemical', 'MESH:D005459', (59, 61)) ('FLT3', 'Gene', '2322', (37, 41)) ('FL', 'Chemical', 'MESH:D005459', (37, 39)) ('FLT3', 'Gene', (37, 41)) ('interacting', 'Interaction', (42, 53)) 111109 32411094 It can be hypothesized that R387Q could be part of a hydrogen binding motif with the opposing Glutamine 365 or 366 in the FLT3 partner. ('R387Q', 'Mutation', 'rs751562024', (28, 33)) ('hydrogen', 'Chemical', 'MESH:D006859', (53, 61)) ('FLT3', 'Gene', '2322', (122, 126)) ('R387Q', 'Var', (28, 33)) ('Glutamine', 'Chemical', 'MESH:D005973', (94, 103)) ('FLT3', 'Gene', (122, 126)) 111112 32411094 Variants exclusively found in this patient were A432A, G691S, and S904S. ('G691S', 'Var', (55, 60)) ('S904S', 'Var', (66, 71)) ('S904S', 'Mutation', 'rs1800863', (66, 71)) ('patient', 'Species', '9606', (35, 42)) ('A432A', 'Var', (48, 53)) ('G691S', 'Mutation', 'rs1799939', (55, 60)) 111113 32411094 Of these variants, the G691S and S904S variant and their association to MTC have been investigated in several MEN 2A studies. ('S904S', 'Mutation', 'rs1800863', (33, 38)) ('G691S', 'Var', (23, 28)) ('MTC', 'Phenotype', 'HP:0002865', (72, 75)) ('S904S', 'Var', (33, 38)) ('MEN 2A', 'Gene', (110, 116)) ('MTC', 'Disease', (72, 75)) ('G691S', 'Mutation', 'rs1799939', (23, 28)) ('MEN 2A', 'Gene', '5979', (110, 116)) 111114 32411094 A study of 104 MEN 2A patients from Spain suggested that G691S and S904S could be related to early appearance of symptoms in an overall MEN 2A group and in a group with codon 634 mutations only. ('MEN 2A', 'Gene', '5979', (15, 21)) ('MEN 2A', 'Gene', (15, 21)) ('G691S', 'Mutation', 'rs1799939', (57, 62)) ('MEN 2A', 'Gene', (136, 142)) ('patients', 'Species', '9606', (22, 30)) ('MEN 2A', 'Gene', '5979', (136, 142)) ('G691S', 'Var', (57, 62)) ('S904S', 'Var', (67, 72)) ('S904S', 'Mutation', 'rs1800863', (67, 72)) 111115 32411094 Similarly, a recent Italian study observed an earlier age at MTC diagnosis in patients carrying the G691S variant and the S891A germline mutation compared to those only carrying the S891A mutation. ('S891A', 'Mutation', 'rs75234356', (122, 127)) ('patients', 'Species', '9606', (78, 86)) ('S891A', 'Var', (122, 127)) ('S891A', 'Mutation', 'rs75234356', (182, 187)) ('G691S', 'Mutation', 'rs1799939', (100, 105)) ('MTC', 'Phenotype', 'HP:0002865', (61, 64)) ('G691S', 'Var', (100, 105)) 111116 32411094 However, in the present study, we could not confirm a genetic modifier effect of the G691S and S904S variant when comparing our two L790F index patients. ('S904S', 'Mutation', 'rs1800863', (95, 100)) ('G691S', 'Mutation', 'rs1799939', (85, 90)) ('patients', 'Species', '9606', (144, 152)) ('G691S', 'Var', (85, 90)) ('S904S', 'Var', (95, 100)) ('L790F', 'Mutation', 'rs75030001', (132, 137)) 111117 32411094 This is in accordance with other investigations that studied the G691S and S904S variant in MEN 2A patients carrying mutations of codon 533, 618, and 634. ('S904S', 'Mutation', 'rs1800863', (75, 80)) ('MEN 2A', 'Gene', '5979', (92, 98)) ('MEN 2A', 'Gene', (92, 98)) ('patients', 'Species', '9606', (99, 107)) ('G691S', 'Mutation', 'rs1799939', (65, 70)) ('S904S', 'Var', (75, 80)) ('G691S', 'Var', (65, 70)) 111119 32411094 An international collaborative study of 384 MEN 2A patients from four different European populations suggested a protective effect of the A432A variant with a 50% decreased risk of developing pheochromocytoma and/or primary hyperparathyroidism (P = 0.03). ('primary hyperparathyroidism', 'Disease', (216, 243)) ('primary hyperparathyroidism', 'Phenotype', 'HP:0008200', (216, 243)) ('MEN 2A', 'Gene', '5979', (44, 50)) ('MEN 2A', 'Gene', (44, 50)) ('pheochromocytoma', 'Disease', (192, 208)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (192, 208)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (224, 243)) ('A432A', 'Var', (138, 143)) ('decreased', 'NegReg', (163, 172)) ('primary hyperparathyroidism', 'Disease', 'MESH:D049950', (216, 243)) ('patients', 'Species', '9606', (51, 59)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (192, 208)) 111121 32411094 However, the penetrance of pheochromocytoma and primary hyperparathyroidism in L790F carriers has been reported as exceedingly low. ('L790F', 'Mutation', 'rs75030001', (79, 84)) ('L790F', 'Var', (79, 84)) ('primary hyperparathyroidism', 'Disease', 'MESH:D049950', (48, 75)) ('pheochromocytoma', 'Disease', (27, 43)) ('primary hyperparathyroidism', 'Phenotype', 'HP:0008200', (48, 75)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (27, 43)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (56, 75)) ('primary hyperparathyroidism', 'Disease', (48, 75)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (27, 43)) 111122 32411094 Although pheochromocytoma often is reported in carriers of codon 634 mutations, there have also been reports of this manifestation in L790F carriers. ('codon 634 mutations', 'Var', (59, 78)) ('pheochromocytoma', 'Disease', (9, 25)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (9, 25)) ('L790F', 'Var', (134, 139)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (9, 25)) ('L790F', 'Mutation', 'rs75030001', (134, 139)) 111123 32411094 Opposed to the phenotype of our two patients, having only MTC and no pheochromocytoma, a 44-year-old L790F carrier has been reported to present with bilateral pheochromocytoma and no evidence of MTC. ('pheochromocytoma', 'Disease', 'MESH:D010673', (159, 175)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (159, 175)) ('MTC', 'Phenotype', 'HP:0002865', (58, 61)) ('MTC', 'Phenotype', 'HP:0002865', (195, 198)) ('patients', 'Species', '9606', (36, 44)) ('L790F', 'Mutation', 'rs75030001', (101, 106)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (69, 85)) ('L790F', 'Var', (101, 106)) ('pheochromocytoma', 'Disease', (69, 85)) ('pheochromocytoma', 'Disease', (159, 175)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (69, 85)) 111128 32411094 Despite V804L carriers usually displaying a late onset and an indolent course of C-cell disease, the authors reported of an index patient, who presented with a thyroid tumor (25 mm), clinical lymph node involvement, and elevated basal calcitonin (1,750 pg/ml) at 12 years of age. ('V804L', 'Mutation', 'rs79658334', (8, 13)) ('patient', 'Species', '9606', (130, 137)) ('V804L', 'Var', (8, 13)) ('tumor', 'Phenotype', 'HP:0002664', (168, 173)) ('thyroid tumor', 'Disease', (160, 173)) ('elevated', 'PosReg', (220, 228)) ('thyroid tumor', 'Disease', 'MESH:D013964', (160, 173)) ('elevated basal calcitonin', 'Phenotype', 'HP:0003528', (220, 245)) ('thyroid tumor', 'Phenotype', 'HP:0100031', (160, 173)) 111129 32411094 A somatic M918T mutation was detected in the patient's tumor. ('M918T', 'Var', (10, 15)) ('tumor', 'Disease', 'MESH:D009369', (55, 60)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('tumor', 'Disease', (55, 60)) ('patient', 'Species', '9606', (45, 52)) ('M918T', 'Mutation', 'rs74799832', (10, 15)) 111131 32411094 The lack of somatic RET variants in both our index patients suggests that a similar hypothesis may not be valid for L790F carriers. ('L790F', 'Mutation', 'rs75030001', (116, 121)) ('RET', 'Gene', '5979', (20, 23)) ('L790F', 'Var', (116, 121)) ('RET', 'Gene', (20, 23)) ('patients', 'Species', '9606', (51, 59)) 111134 32411094 We could not confirm the previously reported finding of a somatic RET variant as likely responsible for the early onset and aggressiveness of MTC in a RET germline mutation carrier. ('aggressiveness', 'Disease', 'MESH:D001523', (124, 138)) ('RET', 'Gene', (151, 154)) ('MTC', 'Phenotype', 'HP:0002865', (142, 145)) ('RET', 'Gene', (66, 69)) ('variant', 'Var', (70, 77)) ('aggressiveness', 'Disease', (124, 138)) ('RET', 'Gene', '5979', (151, 154)) ('aggressiveness', 'Phenotype', 'HP:0000718', (124, 138)) ('RET', 'Gene', '5979', (66, 69)) 111137 31979226 Targeting NRF2-Governed Glutathione Synthesis for SDHB-Mutated Pheochromocytoma and Paraganglioma Succinate dehydrogenase subunit B (SDHB) deficiency frequently occurs in cluster I pheochromocytomas and paragangliomas (PCPGs). ('Glutathione', 'Chemical', 'MESH:D005978', (24, 35)) ('cluster I pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (171, 217)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (63, 79)) ('NRF2', 'Gene', (10, 14)) ('SDHB', 'Gene', (50, 54)) ('Pheochromocytoma and Paraganglioma', 'Disease', 'MESH:D010673', (63, 97)) ('occurs', 'Reg', (161, 167)) ('Succinate dehydrogenase subunit B', 'Gene', (98, 131)) ('SDHB', 'Gene', '6390', (133, 137)) ('paragangliomas', 'Phenotype', 'HP:0002668', (203, 217)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (84, 97)) ('cluster I pheochromocytomas', 'Phenotype', 'HP:0002666', (171, 198)) ('SDHB', 'Gene', (133, 137)) ('Succinate dehydrogenase subunit B', 'Gene', '6390', (98, 131)) ('deficiency', 'Var', (139, 149)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (181, 197)) ('NRF2', 'Gene', '4780', (10, 14)) ('SDHB', 'Gene', '6390', (50, 54)) 111141 31979226 NRF2 blockade not only disrupted ROS homeostasis in SDHB-deficient cells but also caused severe cytotoxicity by the accumulation of DNA oxidative damage. ('accumulation', 'PosReg', (116, 128)) ('blockade', 'Var', (5, 13)) ('NRF2', 'Gene', (0, 4)) ('disrupted', 'NegReg', (23, 32)) ('ROS homeostasis', 'MPA', (33, 48)) ('cytotoxicity', 'Disease', (96, 108)) ('DNA oxidative damage', 'MPA', (132, 152)) ('ROS', 'Chemical', 'MESH:D017382', (33, 36)) ('cytotoxicity', 'Disease', 'MESH:D064420', (96, 108)) ('caused', 'Reg', (82, 88)) 111145 31979226 Genetically, PCPG tumorigenesis is related to genetic alterations in 21 genes, which cluster into three major molecular subtypes on the basis of their signature transcriptomic profiles. ('tumor', 'Disease', (18, 23)) ('genetic alterations', 'Var', (46, 65)) ('related', 'Reg', (35, 42)) ('rat', 'Species', '10116', (58, 61)) ('tumor', 'Disease', 'MESH:D009369', (18, 23)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 111146 31979226 Cluster I PCPGs are characterized by the activation of the pseudohypoxia-related signaling pathway, which includes mutations in hypoxia-inducible factor 2A (HIF2A), succinate dehydrogenase subunits (SDHA, SDHB, SDHC, SDHD), succinate dehydrogenase complex assembly factor 2 (SDHAF2), von Hippel-Lindau tumor suppressor (VHL), egl-9 prolyl hydroxylases 1 and 2 (EGLN1/2), fumarate hydratase (FH), malate dehydrogenase 2 (MDH2), and the ATP-dependent helicase (ATRX). ('tumor', 'Phenotype', 'HP:0002664', (302, 307)) ('ATRX', 'Gene', '546', (459, 463)) ('hypoxia-inducible factor 2A', 'Gene', '2034', (128, 155)) ('malate dehydrogenase 2', 'Gene', '4191', (396, 418)) ('fumarate hydratase', 'Gene', (371, 389)) ('SDHC', 'Gene', (211, 215)) ('von Hippel-Lindau tumor', 'Disease', (284, 307)) ('SDHD', 'Gene', (217, 221)) ('SDHD', 'Gene', '6392', (217, 221)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', (224, 273)) ('ATP-dependent helicase', 'Protein', (435, 457)) ('EGLN1/2', 'Gene', (361, 368)) ('SDHA', 'Gene', (199, 203)) ('pseudohypoxia', 'Disease', (59, 72)) ('activation', 'PosReg', (41, 51)) ('VHL', 'Gene', (320, 323)) ('SDHA', 'Gene', '6389', (199, 203)) ('MDH2', 'Gene', '4191', (420, 424)) ('SDHA', 'Gene', (275, 279)) ('fumarate hydratase', 'Gene', '2271', (371, 389)) ('hypoxia-inducible factor 2A', 'Gene', (128, 155)) ('von Hippel-Lindau tumor', 'Disease', 'MESH:D006623', (284, 307)) ('SDHA', 'Gene', '6389', (275, 279)) ('EGLN1/2', 'Gene', '54583;112398', (361, 368)) ('HIF2A', 'Gene', '2034', (157, 162)) ('SDHC', 'Gene', '6391', (211, 215)) ('succinate dehydrogenase subunits', 'Gene', (165, 197)) ('mutations', 'Var', (115, 124)) ('VHL', 'Gene', '7428', (320, 323)) ('FH', 'Gene', '2271', (391, 393)) ('malate dehydrogenase 2', 'Gene', (396, 418)) ('SDHAF2', 'Gene', '54949', (275, 281)) ('SDHAF2', 'Gene', (275, 281)) ('HIF2A', 'Gene', (157, 162)) ('MDH2', 'Gene', (420, 424)) ('succinate dehydrogenase subunits', 'Gene', '6389', (165, 197)) ('ATRX', 'Gene', (459, 463)) ('pseudohypoxia', 'Disease', '-', (59, 72)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', '54949', (224, 273)) 111147 31979226 Meanwhile, cluster II PCPGs result from mutations related to the kinase signaling pathway, which includes the RET proto-oncogene, neurofibromin 1 (NF1), Harvey rat sarcoma proto-oncogenes (H-RAS), transmembrane protein 127 (TMEM127), and Myc-associated factor X (MAX). ('TMEM127', 'Gene', (224, 231)) ('cluster II PCPG', 'Disease', (11, 26)) ('Myc-associated factor X', 'Gene', '60661', (238, 261)) ('rat', 'Species', '10116', (160, 163)) ('kinase signaling pathway', 'Pathway', (65, 89)) ('sarcoma', 'Disease', 'MESH:D012509', (164, 171)) ('sarcoma', 'Disease', (164, 171)) ('neurofibromin 1', 'Gene', '24592', (130, 145)) ('TMEM127', 'Gene', '311405', (224, 231)) ('mutations', 'Var', (40, 49)) ('transmembrane protein 127', 'Gene', (197, 222)) ('NF1', 'Gene', '24592', (147, 150)) ('sarcoma', 'Phenotype', 'HP:0100242', (164, 171)) ('neurofibromin 1', 'Gene', (130, 145)) ('transmembrane protein 127', 'Gene', '311405', (197, 222)) ('RET', 'Gene', '24716', (110, 113)) ('NF1', 'Gene', (147, 150)) ('RET', 'Gene', (110, 113)) ('result from', 'Reg', (28, 39)) ('cluster II PCPG', 'Disease', 'MESH:D003027', (11, 26)) ('Myc-associated factor X', 'Gene', (238, 261)) 111163 31979226 Further, the loss of SDHB led to substantial compromised oxidative metabolism and accumulation of succinate (Figure S1). ('accumulation', 'PosReg', (82, 94)) ('oxidative metabolism', 'MPA', (57, 77)) ('compromised', 'NegReg', (45, 56)) ('succinate', 'Chemical', 'MESH:D019802', (98, 107)) ('loss', 'Var', (13, 17)) ('SDHB', 'Gene', (21, 25)) 111164 31979226 Genetic disruption of SDHB resulted in robust accumulation of ROS in mitochondria and cytoplasm. ('ROS', 'Chemical', 'MESH:D017382', (62, 65)) ('Genetic disruption', 'Var', (0, 18)) ('SDHB', 'Gene', (22, 26)) ('accumulation', 'PosReg', (46, 58)) ('ROS', 'MPA', (62, 65)) 111165 31979226 MitoSOX Red staining showed a significant increase in ROS generation in SDHBKD compared to SDHB wild type (SDHBWT) cells (Figure 1B,C). ('ROS generation', 'MPA', (54, 68)) ('MitoSOX Red', 'Chemical', 'MESH:C000597839', (0, 11)) ('rat', 'Species', '10116', (62, 65)) ('SDHBKD', 'Var', (72, 78)) ('ROS', 'Chemical', 'MESH:D017382', (54, 57)) ('SDHBWT', 'Chemical', '-', (107, 113)) ('increase', 'PosReg', (42, 50)) 111167 31979226 The ROS elevation was relieved by the re-expression of SDHB (Figure S2A,B). ('SDHB', 'Gene', (55, 59)) ('ROS', 'Chemical', 'MESH:D017382', (4, 7)) ('re-expression', 'Var', (38, 51)) ('ROS elevation', 'Phenotype', 'HP:0025464', (4, 17)) ('ROS elevation', 'MPA', (4, 17)) 111169 31979226 The glutathione/glutathione disulfide (GSH/GSSG) ratio decreased by over 50% upon genetic silencing of SDHB, indicating that SDHBKD cells consume GSH for ROS scavenging and convert to more GSSG (Figure 1E and Figure S1C). ('SDHB', 'Gene', (103, 107)) ('glutathione disulfide', 'Chemical', 'MESH:D019803', (16, 37)) ('GSSG', 'Chemical', 'MESH:D019803', (189, 193)) ('glutathione', 'Chemical', 'MESH:D005978', (4, 15)) ('GSH', 'Chemical', '-', (39, 42)) ('GSH', 'Chemical', '-', (146, 149)) ('ROS', 'MPA', (154, 157)) ('genetic silencing', 'Var', (82, 99)) ('decreased', 'NegReg', (55, 64)) ('glutathione/glutathione disulfide', 'MPA', (4, 37)) ('glutathione', 'Chemical', 'MESH:D005978', (16, 27)) ('rat', 'Species', '10116', (49, 52)) ('ROS', 'Chemical', 'MESH:D017382', (154, 157)) ('GSSG', 'Chemical', 'MESH:D019803', (43, 47)) 111176 31979226 To evaluate the role of the glutathione synthesis pathway, we designed and investigated small interfering RNA targeting GCLC, GCLM, and SLC7A11 (Figure 3A and Figure S3A). ('small interfering', 'Var', (88, 105)) ('SLC7A11', 'Gene', (136, 143)) ('glutathione', 'Chemical', 'MESH:D005978', (28, 39)) ('GCLM', 'Gene', (126, 130)) ('GCLC', 'Gene', (120, 124)) 111197 31979226 A 5-bromo-2'-deoxyuridine (BrdU) incorporation assay confirmed that brusatol reduced cell proliferation by 35.3% in SDHBKD cells, whereas an 18.8% reduction was observed in the wild-type counterpart (Figure 6B,C). ('rat', 'Species', '10116', (97, 100)) ('cell proliferation', 'CPA', (85, 103)) ('brusatol', 'Chemical', 'MESH:C020237', (68, 76)) ('BrdU', 'Chemical', 'MESH:D001973', (27, 31)) ('rat', 'Species', '10116', (40, 43)) ('SDHBKD', 'Var', (116, 122)) ('reduced', 'NegReg', (77, 84)) ("5-bromo-2'-deoxyuridine", 'Chemical', 'MESH:D001973', (2, 25)) 111198 31979226 Similarly, a long-term colony-formation assay revealed that brusatol significantly reduced the colony count in SDHBKD but not SDHBWT cells (Figure 6D). ('brusatol', 'Chemical', 'MESH:C020237', (60, 68)) ('reduced', 'NegReg', (83, 90)) ('SDHBWT', 'Chemical', '-', (126, 132)) ('SDHBKD', 'Var', (111, 117)) ('colony count', 'CPA', (95, 107)) 111202 31979226 In agreement with these findings, annexin V/PI flow cytometry showed an increased number of apoptotic cells in SDHBKD cells compared with SDHBWT after receiving the same dosage of brusatol (Figure 6G,H). ('increased number of apoptotic cells', 'Phenotype', 'HP:0030887', (72, 107)) ('SDHBWT', 'Chemical', '-', (138, 144)) ('brusatol', 'Chemical', 'MESH:C020237', (180, 188)) ('annexin V', 'Gene', '308', (34, 43)) ('SDHBKD', 'Var', (111, 117)) ('apoptotic cells', 'CPA', (92, 107)) ('annexin V', 'Gene', (34, 43)) 111203 31979226 The combination with the ROS scavengers NAC and catalase significantly reduced brusatol-induced cytotoxicity, indicating that ROS imbalance is the primary cause of growth arrest and apoptotic changes. ('catalase', 'Gene', (48, 56)) ('ROS', 'Chemical', 'MESH:D017382', (25, 28)) ('ROS', 'Chemical', 'MESH:D017382', (126, 129)) ('NAC', 'Chemical', 'MESH:D000111', (40, 43)) ('catalase', 'Gene', '847', (48, 56)) ('imbalance', 'Var', (130, 139)) ('cytotoxicity', 'Disease', (96, 108)) ('growth arrest', 'Disease', 'MESH:D006323', (164, 177)) ('reduced', 'NegReg', (71, 78)) ('growth arrest', 'Disease', (164, 177)) ('brusatol', 'Chemical', 'MESH:C020237', (79, 87)) ('imbalance', 'Phenotype', 'HP:0002172', (130, 139)) ('cytotoxicity', 'Disease', 'MESH:D064420', (96, 108)) ('growth arrest', 'Phenotype', 'HP:0001510', (164, 177)) 111213 31979226 However, for animals bearing MPC SDHBWT liver metastasis, brusatol did not effectively suppressed tumor growth, as on the SDHB-deficient cells (Figure S5A,B). ('MPC SDHBWT', 'Var', (29, 39)) ('tumor', 'Disease', 'MESH:D009369', (98, 103)) ('SDHBWT', 'Chemical', '-', (33, 39)) ('tumor', 'Phenotype', 'HP:0002664', (98, 103)) ('brusatol', 'Chemical', 'MESH:C020237', (58, 66)) ('tumor', 'Disease', (98, 103)) 111217 31979226 NRF2 stabilization and transactivation supported de novo glutathione synthesis through the upregulation of GCLC, GCLM, and SLC7A11. ('GCLC', 'Gene', (107, 111)) ('NRF2', 'Gene', (0, 4)) ('GCLM', 'Gene', (113, 117)) ('upregulation', 'PosReg', (91, 103)) ('de novo glutathione synthesis', 'MPA', (49, 78)) ('SLC7A11', 'Gene', (123, 130)) ('glutathione', 'Chemical', 'MESH:D005978', (57, 68)) ('transactivation', 'Var', (23, 38)) 111222 31979226 Pathogenic mutations in SDHB result in abnormalities in electron transfer steps within mitochondrial complex II, which compromise the citric acid cycle and establish a pseudohypoxia phenotype, Warburg-like metabolism, and the formation of several types of human malignancies. ('human', 'Species', '9606', (256, 261)) ('mutations', 'Var', (11, 20)) ('SDHB', 'Gene', (24, 28)) ('result in', 'Reg', (29, 38)) ('compromise', 'NegReg', (119, 129)) ('citric acid', 'Chemical', 'MESH:D019343', (134, 145)) ('abnormalities', 'Var', (39, 52)) ('malignancies', 'Disease', 'MESH:D009369', (262, 274)) ('citric acid cycle', 'MPA', (134, 151)) ('Warburg-like metabolism', 'CPA', (193, 216)) ('electron transfer steps', 'MPA', (56, 79)) ('pseudohypoxia', 'Disease', (168, 181)) ('malignancies', 'Disease', (262, 274)) ('pseudohypoxia', 'Disease', '-', (168, 181)) 111227 31979226 Importantly, we discovered that SDHB-mutated cells exhibited a dependency on glutathione consumption, as genetic silencing of glutathione synthesis enzymes compromised cellular viability specifically in cells with SDHB reduction (Figure 3). ('genetic silencing', 'Var', (105, 122)) ('glutathione synthesis enzymes compromised', 'Phenotype', 'HP:0003343', (126, 167)) ('glutathione', 'Chemical', 'MESH:D005978', (126, 137)) ('SDHB', 'Gene', (214, 218)) ('cellular viability', 'CPA', (168, 186)) ('compromised', 'NegReg', (156, 167)) ('reduction', 'NegReg', (219, 228)) ('glutathione', 'Chemical', 'MESH:D005978', (77, 88)) 111234 31979226 ROS accumulation in the cytoplasm compromises the function of kelch-like ECH-associated protein 1 (KEAP1), the E3 ligase that deactivates NRF2, leading to the stabilization and functioning of NRF2 to activate the antioxidant pathway. ('functioning', 'MPA', (177, 188)) ('ROS', 'Var', (0, 3)) ('kelch-like ECH-associated protein 1', 'Gene', (62, 97)) ('KEAP1', 'Gene', (99, 104)) ('NRF2', 'Protein', (192, 196)) ('NRF2', 'Gene', (138, 142)) ('function', 'MPA', (50, 58)) ('ROS', 'Chemical', 'MESH:D017382', (0, 3)) ('kelch-like ECH-associated protein 1', 'Gene', '9817', (62, 97)) ('compromises', 'NegReg', (34, 45)) ('antioxidant pathway', 'Pathway', (213, 232)) ('activate', 'PosReg', (200, 208)) ('KEAP1', 'Gene', '9817', (99, 104)) ('stabilization', 'MPA', (159, 172)) 111250 31979226 SDHB wild type (SDHBWT) and SDHB knock down (SDHBKD) MPC cells were described previously. ('knock', 'Var', (33, 38)) ('SDHBWT', 'Chemical', '-', (16, 22)) ('SDHB', 'Gene', (28, 32)) 111258 31979226 Primers used in the current study included: mGCLC.F: 5'-CTA CCA CGC AGT CAA GGA CC-3'; mGCLC.R: 5'-CCT CCA TTC AGT AAC AAC TGG AC-3'; mGCLM.F: 5'-ACT CAC AAT GAC CCG AAA GAA C-3'; mGCLM.R: 5'-CCT GCT CTT CAC GAT GAC CG-3'; mSLC7A11.F: 5'-GGC ACC GTC ATC GGA TCA G-3'; mSLC7A11.R: 5'-CTC CAC AGG CAG ACC AGA AAA-3'; hNQO1 (QT00050281); hHMOX1 (QT00092645); hNFE2L2 (QT00027384); hSLC7A11 (QT00002674); and hACTB (QT00095431). ('AGT', 'Gene', '183', (111, 114)) ('CCT', 'Gene', (99, 102)) ('GAA', 'Gene', (170, 173)) ('AGT', 'Gene', (111, 114)) ('QT00027384', 'Var', (365, 375)) ('hSLC7A11', 'Gene', (378, 386)) ('hNQO1', 'Gene', '1728', (315, 320)) ('AGT', 'Gene', '183', (68, 71)) ('GAA', 'Gene', '2548', (170, 173)) ('CCT', 'Gene', (192, 195)) ('hHMOX1', 'Gene', '3162', (335, 341)) ('hNFE2L2', 'Gene', '4780', (356, 363)) ('CCT', 'Gene', '907', (99, 102)) ('AGT', 'Gene', (68, 71)) ('hNQO1', 'Gene', (315, 320)) ('hHMOX1', 'Gene', (335, 341)) ('QT00050281', 'Var', (322, 332)) ('QT00002674', 'Var', (388, 398)) ('hNFE2L2', 'Gene', (356, 363)) ('CCT', 'Gene', '907', (192, 195)) ('hSLC7A11', 'Gene', '23657', (378, 386)) 111308 31564906 The disease is most common in individuals ranging from 20 to 50 years old and the age of onset strongly depends on the genetic background: patients with germline mutations in susceptible genes have an earlier presentation. ('germline mutations', 'Var', (153, 171)) ('common', 'Reg', (20, 26)) ('patients', 'Species', '9606', (139, 147)) 111319 31564906 If PCC/PGL are not diagnosed in time, delaying in treatment can cause serious heart, brain, kidney vascular damages, and even death. ('men', 'Species', '9606', (55, 58)) ('delaying', 'Var', (38, 46)) ('cause', 'Reg', (64, 69)) ('death', 'Disease', 'MESH:D003643', (126, 131)) ('death', 'Disease', (126, 131)) ('brain', 'CPA', (85, 90)) ('heart', 'CPA', (78, 83)) ('PCC/PGL', 'Disease', (3, 10)) ('PCC/PGL', 'Disease', 'MESH:D010673', (3, 10)) ('kidney vascular damages', 'Disease', (92, 115)) ('kidney vascular damages', 'Disease', 'MESH:D007674', (92, 115)) 111322 31564906 For example, mutations in NF1 and RET genes are almost always associated with PCC/PGL that produce catecholamine. ('RET', 'Gene', '5979', (34, 37)) ('associated', 'Reg', (62, 72)) ('PCC/PGL', 'Disease', 'MESH:D010673', (78, 85)) ('NF1', 'Gene', (26, 29)) ('RET', 'Gene', (34, 37)) ('NF1', 'Gene', '4763', (26, 29)) ('PCC/PGL', 'Disease', (78, 85)) ('mutations', 'Var', (13, 22)) ('catecholamine', 'Chemical', 'MESH:D002395', (99, 112)) 111323 31564906 In opposite, some tumors due to mutations in VHL and SDHx genes lack significant excretion of catecholamine. ('SDH', 'Gene', (53, 56)) ('SDH', 'Gene', '6390', (53, 56)) ('tumors', 'Disease', (18, 24)) ('mutations', 'Var', (32, 41)) ('catecholamine', 'Chemical', 'MESH:D002395', (94, 107)) ('tumors', 'Disease', 'MESH:D009369', (18, 24)) ('excretion of catecholamine', 'MPA', (81, 107)) ('tumors', 'Phenotype', 'HP:0002664', (18, 24)) ('VHL', 'Gene', (45, 48)) ('lack', 'NegReg', (64, 68)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 111325 31564906 For instance, the level of endogenous VHL tumor suppressor protein (pVHL) in PC12 cells expressing VHL antisense RNA reduced by 5-10 folds while the levels of TH protein and mRNA increased by 2-3 folds. ('N', 'Chemical', 'MESH:D009584', (114, 115)) ('antisense RNA', 'Var', (103, 116)) ('tumor', 'Disease', (42, 47)) ('reduced', 'NegReg', (117, 124)) ('levels', 'MPA', (149, 155)) ('VHL', 'Gene', (99, 102)) ('level', 'MPA', (18, 23)) ('TH', 'Gene', '7054', (159, 161)) ('N', 'Chemical', 'MESH:D009584', (176, 177)) ('mRNA', 'MPA', (174, 178)) ('tumor', 'Disease', 'MESH:D009369', (42, 47)) ('increased', 'PosReg', (179, 188)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) 111331 31564906 Furthermore, it is a kind of human tumor model that has inherited mutations in a metabolic enzyme gene, succinate dehydrogenase subunit D (SDHD). ('mutations', 'Var', (66, 75)) ('tumor', 'Disease', 'MESH:D009369', (35, 40)) ('SDHD', 'Gene', (139, 143)) ('SDHD', 'Gene', '6392', (139, 143)) ('tumor', 'Phenotype', 'HP:0002664', (35, 40)) ('succinate dehydrogenase subunit D', 'Gene', '6392', (104, 137)) ('tumor', 'Disease', (35, 40)) ('succinate dehydrogenase subunit D', 'Gene', (104, 137)) ('human', 'Species', '9606', (29, 34)) 111334 31564906 It has been proved that the mutations of subunits of succinate dehydrogenase (SDH) (including SDHA, SDHB, SDHC, SDHD, SDHAF2), FH, prolyl hydroxylase domain protein 2 (PHD2), von Hippel Lindau (VHL), and hypoxia-inducible factor 2A (HIF2A), which are the cluster 1 genes of PCC/PGL, influenced the hypoxia-related signal pathway, while the mutations of rearranged during transfection proto-oncogene (RET), myc-associated factor X (MAX), transmembrane protein 127 (TMEM127), neurofibromin 1 (NF1), and kinesin family member1B beta (KIF1Bbeta), which are the cluster 2 genes of PCC/PGL, influenced the increased kinase signal pathways. ('TMEM127', 'Gene', '55654', (464, 471)) ('hypoxia', 'Disease', 'MESH:D000860', (204, 211)) ('prolyl hydroxylase domain protein 2', 'Gene', '54583', (131, 166)) ('hypoxia', 'Disease', 'MESH:D000860', (298, 305)) ('von Hippel Lindau', 'Gene', (175, 192)) ('SDHC', 'Gene', '6391', (106, 110)) ('myc-associated factor X', 'Gene', (406, 429)) ('SDHD', 'Gene', '6392', (112, 116)) ('rearranged during transfection proto-oncogene', 'Gene', '5979', (353, 398)) ('MAX', 'Gene', (431, 434)) ('PHD2', 'Gene', '54583', (168, 172)) ('succinate dehydrogenase', 'Gene', '6390', (53, 76)) ('NF1', 'Gene', (491, 494)) ('SDH', 'Gene', '6390', (112, 115)) ('SDHB', 'Gene', '6390', (100, 104)) ('neurofibromin 1', 'Gene', '4763', (474, 489)) ('RET', 'Gene', (400, 403)) ('KIF1Bbeta', 'Gene', (531, 540)) ('SDH', 'Gene', '6390', (94, 97)) ('hypoxia-inducible factor 2A', 'Gene', '2034', (204, 231)) ('SDH', 'Gene', (106, 109)) ('HIF2A', 'Gene', '2034', (233, 238)) ('SDHD', 'Gene', (112, 116)) ('PCC/PGL', 'Disease', (274, 281)) ('SDH', 'Gene', '6390', (118, 121)) ('neurofibromin 1', 'Gene', (474, 489)) ('prolyl hydroxylase domain protein 2', 'Gene', (131, 166)) ('PCC/PGL', 'Disease', (576, 583)) ('mutations', 'Var', (340, 349)) ('HIF2A', 'Gene', (233, 238)) ('myc-associated factor X', 'Gene', '4149', (406, 429)) ('SDH', 'Gene', '6390', (78, 81)) ('SDHB', 'Gene', (100, 104)) ('influenced', 'Reg', (585, 595)) ('SDHC', 'Gene', (106, 110)) ('SDH', 'Gene', (112, 115)) ('SDH', 'Gene', '6390', (100, 103)) ('influenced', 'Reg', (283, 293)) ('kinase signal pathways', 'Pathway', (610, 632)) ('SDHAF2', 'Gene', '54949', (118, 124)) ('SDHAF2', 'Gene', (118, 124)) ('SDHA', 'Gene', (94, 98)) ('MAX', 'Gene', '4149', (431, 434)) ('SDH', 'Gene', (94, 97)) ('SDHA', 'Gene', (118, 122)) ('SDH', 'Gene', (118, 121)) ('von Hippel Lindau', 'Gene', '7428', (175, 192)) ('succinate dehydrogenase', 'Gene', (53, 76)) ('mutations', 'Var', (28, 37)) ('TMEM127', 'Gene', (464, 471)) ('hypoxia', 'Disease', (204, 211)) ('SDH', 'Gene', (78, 81)) ('SDHA', 'Gene', '6389', (94, 98)) ('hypoxia', 'Disease', (298, 305)) ('PCC/PGL', 'Disease', 'MESH:D010673', (274, 281)) ('SDHA', 'Gene', '6389', (118, 122)) ('SDH', 'Gene', (100, 103)) ('hypoxia-inducible factor 2A', 'Gene', (204, 231)) ('PCC/PGL', 'Disease', 'MESH:D010673', (576, 583)) ('RET', 'Gene', '5979', (400, 403)) ('rearranged during transfection proto-oncogene', 'Gene', (353, 398)) ('PHD2', 'Gene', (168, 172)) ('NF1', 'Gene', '4763', (491, 494)) ('FH', 'Gene', '2271', (127, 129)) ('SDH', 'Gene', '6390', (106, 109)) 111358 31564906 I131-metaiodoenzylguanidine (I131-MIBG) is a kind of radiopharmaceutical which acts as a norepinephrine analog taken up by cells in the sympathomedullary system and high doses of I131-MIBG can prolong survival and relieve symptoms. ('relieve', 'NegReg', (214, 221)) ('I131-MIBG', 'Chemical', 'MESH:D019797', (179, 188)) ('symptoms', 'Disease', (222, 230)) ('I131-MIBG', 'Var', (179, 188)) ('norepinephrine', 'Chemical', 'MESH:D009638', (89, 103)) ('prolong', 'PosReg', (193, 200)) ('I131-MIBG', 'Chemical', 'MESH:D019797', (29, 38)) ('survival', 'CPA', (201, 209)) ('I131-metaiodoenzylguanidine', 'Chemical', 'MESH:C406248', (0, 27)) 111365 31564906 O-6-methylguanine-DNA methyltransferase (MGMT) promoter displaying hypermethylation in SDHB-related tumors leads to the silencing of MGMT expression. ('O-6-methylguanine-DNA methyltransferase', 'Gene', '4255', (0, 39)) ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('O-6-methylguanine-DNA methyltransferase', 'Gene', (0, 39)) ('SDHB', 'Gene', '6390', (87, 91)) ('tumors', 'Disease', (100, 106)) ('tumors', 'Disease', 'MESH:D009369', (100, 106)) ('hypermethylation', 'Var', (67, 83)) ('silencing', 'NegReg', (120, 129)) ('tumors', 'Phenotype', 'HP:0002664', (100, 106)) ('expression', 'MPA', (138, 148)) ('MGMT', 'Gene', '4255', (133, 137)) ('MGMT', 'Gene', (133, 137)) ('MGMT', 'Gene', '4255', (41, 45)) ('MGMT', 'Gene', (41, 45)) ('SDHB', 'Gene', (87, 91)) 111378 31564906 Hypoxia-inducible factor (HIF) is a kind of transcription factor that controls energy, erythropoiesis, iron metabolism, and development and when dysregulated, it will result in tumorigenesis. ('Hypoxia', 'Disease', 'MESH:D000860', (0, 7)) ('iron', 'Chemical', 'MESH:D007501', (103, 107)) ('Hypoxia', 'Disease', (0, 7)) ('men', 'Species', '9606', (131, 134)) ('dysregulated', 'Var', (145, 157)) ('tumor', 'Disease', 'MESH:D009369', (177, 182)) ('result in', 'Reg', (167, 176)) ('tumor', 'Phenotype', 'HP:0002664', (177, 182)) ('tumor', 'Disease', (177, 182)) 111384 31564906 It is worth mentioning that in 2013, David et al first associated the somatic HIF2A gain-of-function mutation with PCC/PGL. ('PCC/PGL', 'Disease', 'MESH:D010673', (115, 122)) ('HIF2A', 'Gene', (78, 83)) ('gain-of-function', 'PosReg', (84, 100)) ('PCC/PGL', 'Disease', (115, 122)) ('men', 'Species', '9606', (12, 15)) ('HIF2A', 'Gene', '2034', (78, 83)) ('mutation', 'Var', (101, 109)) 111385 31564906 What influences the hypoxia-related signal pathway is the mutations of Cluster 1 genes. ('mutations', 'Var', (58, 67)) ('Cluster 1 genes', 'Gene', (71, 86)) ('hypoxia', 'Disease', 'MESH:D000860', (20, 27)) ('hypoxia', 'Disease', (20, 27)) ('influences', 'Reg', (5, 15)) 111389 31564906 Besides, in PCC/PGL, VHL mutations reported were often missense mutations. ('PCC/PGL', 'Disease', 'MESH:D010673', (12, 19)) ('VHL mutations', 'Gene', (21, 34)) ('missense mutations', 'Var', (55, 73)) ('PCC/PGL', 'Disease', (12, 19)) 111390 31564906 These mutations result in the activation of HIF signal pathways at normal oxygen levels, elevated erythropoietin levels, and overproduction of red blood cells. ('erythropoietin', 'Gene', (98, 112)) ('oxygen', 'Chemical', 'MESH:D010100', (74, 80)) ('overproduction', 'PosReg', (125, 139)) ('activation', 'PosReg', (30, 40)) ('erythropoietin', 'Gene', '2056', (98, 112)) ('elevated', 'PosReg', (89, 97)) ('HIF signal pathways', 'Pathway', (44, 63)) ('mutations', 'Var', (6, 15)) 111391 31564906 The results indicated that VHL mutations could predict the clinical diagnosis of PCCs and play a crucial role in the pathogenesis of sporadic head and neck paragangliomas. ('PCC', 'Gene', (81, 84)) ('mutations', 'Var', (31, 40)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (151, 170)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (142, 170)) ('neck paragangliomas', 'Disease', (151, 170)) ('PCC', 'Gene', '1421', (81, 84)) ('VHL', 'Gene', (27, 30)) ('paraganglioma', 'Phenotype', 'HP:0002668', (156, 169)) ('predict', 'Reg', (47, 54)) ('paragangliomas', 'Phenotype', 'HP:0002668', (156, 170)) 111394 31564906 Harmful mutations in SDHx lead to energy metabolism disorders and succinate accumulation, thereby inhibiting the activity of PHD2. ('lead to', 'Reg', (26, 33)) ('energy metabolism disorders', 'Disease', (34, 61)) ('SDH', 'Gene', (21, 24)) ('mutations', 'Var', (8, 17)) ('energy metabolism disorders', 'Disease', 'MESH:D008659', (34, 61)) ('succinate accumulation', 'MPA', (66, 88)) ('activity', 'MPA', (113, 121)) ('SDH', 'Gene', '6390', (21, 24)) ('PHD2', 'Gene', '54583', (125, 129)) ('PHD2', 'Gene', (125, 129)) ('inhibiting', 'NegReg', (98, 108)) ('succinate', 'Chemical', 'MESH:D013386', (66, 75)) 111398 31564906 SDHB mutations and SDHC mutations were also proven to have relationship with PCC/PGL. ('SDHC', 'Gene', '6391', (19, 23)) ('PCC/PGL', 'Disease', 'MESH:D010673', (77, 84)) ('PCC/PGL', 'Disease', (77, 84)) ('mutations', 'Var', (5, 14)) ('relationship', 'Reg', (59, 71)) ('SDHB', 'Gene', '6390', (0, 4)) ('mutations', 'Var', (24, 33)) ('SDHC', 'Gene', (19, 23)) ('SDHB', 'Gene', (0, 4)) 111399 31564906 In 2000, SDHD mutations were found in sporadic and hereditary PGL/PCC. ('found', 'Reg', (29, 34)) ('PCC', 'Gene', '1421', (66, 69)) ('SDHD', 'Gene', '6392', (9, 13)) ('SDHD', 'Gene', (9, 13)) ('PCC', 'Gene', (66, 69)) ('mutations', 'Var', (14, 23)) 111401 31564906 The mutations of FH result in the accumulation of fumarate, and thus activate the oncogenic HIF pathway through inhibiting PHD2. ('FH', 'Gene', '2271', (17, 19)) ('fumarate', 'Chemical', 'MESH:D005650', (50, 58)) ('fumarate', 'MPA', (50, 58)) ('activate', 'PosReg', (69, 77)) ('PHD2', 'Gene', (123, 127)) ('accumulation', 'PosReg', (34, 46)) ('PHD2', 'Gene', '54583', (123, 127)) ('oncogenic HIF pathway', 'Pathway', (82, 103)) ('mutations', 'Var', (4, 13)) ('inhibiting', 'NegReg', (112, 122)) 111402 31564906 FH mutations can be regarded as a rare source of susceptibility to PCC/PGL and FH-deficient PCC/PGL have similar genetic developmental pathways to SDHB-mutated metastatic PCC/PGL. ('FH', 'Gene', '2271', (0, 2)) ('PCC/PGL', 'Disease', (67, 74)) ('PCC/PGL', 'Disease', 'MESH:D010673', (67, 74)) ('FH', 'Gene', '2271', (79, 81)) ('PCC/PGL', 'Disease', 'MESH:D010673', (92, 99)) ('men', 'Species', '9606', (128, 131)) ('PCC/PGL', 'Disease', 'MESH:D010673', (171, 178)) ('PCC/PGL', 'Disease', (92, 99)) ('SDHB', 'Gene', '6390', (147, 151)) ('PCC/PGL', 'Disease', (171, 178)) ('SDHB', 'Gene', (147, 151)) ('mutations', 'Var', (3, 12)) 111403 31564906 In conclusion, mutations of FH result in metastatic PCC/PGL with a great possibility. ('PCC/PGL', 'Disease', (52, 59)) ('FH', 'Gene', '2271', (28, 30)) ('mutations', 'Var', (15, 24)) ('PCC/PGL', 'Disease', 'MESH:D010673', (52, 59)) ('result in', 'Reg', (31, 40)) 111418 31564906 When it comes to MAX, its mutations were first reported in susceptibility to hereditary PCC/PGL in 2011. ('MAX', 'Gene', '4149', (17, 20)) ('MAX', 'Gene', (17, 20)) ('PCC/PGL', 'Disease', 'MESH:D010673', (88, 95)) ('PCC/PGL', 'Disease', (88, 95)) ('mutations', 'Var', (26, 35)) 111419 31564906 MAX plays a crucial role in the MYC/MAX pathway, the deregulation of which contributes to activate PI3K. ('MAX', 'Gene', (0, 3)) ('MAX', 'Gene', '4149', (0, 3)) ('PI3K', 'Pathway', (99, 103)) ('activate', 'PosReg', (90, 98)) ('MAX', 'Gene', '4149', (36, 39)) ('MAX', 'Gene', (36, 39)) ('deregulation', 'Var', (53, 65)) 111420 31564906 The isolation of MAX mutations, immunohistochemical analysis of MAX protein deletions in tumors, and loss of wild-type MAX alleles in tumors implied that MAX is a tumor suppressor gene. ('MAX', 'Gene', '4149', (119, 122)) ('tumors', 'Disease', (89, 95)) ('tumors', 'Phenotype', 'HP:0002664', (134, 140)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('tumor', 'Disease', (163, 168)) ('tumor', 'Phenotype', 'HP:0002664', (134, 139)) ('deletions', 'Var', (76, 85)) ('tumors', 'Disease', (134, 140)) ('MAX', 'Gene', (17, 20)) ('tumor', 'Disease', 'MESH:D009369', (163, 168)) ('tumors', 'Disease', 'MESH:D009369', (89, 95)) ('MAX', 'Gene', (119, 122)) ('tumor', 'Disease', (89, 94)) ('MAX', 'Gene', '4149', (154, 157)) ('MAX', 'Gene', (64, 67)) ('tumors', 'Disease', 'MESH:D009369', (134, 140)) ('tumor', 'Phenotype', 'HP:0002664', (163, 168)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) ('protein', 'Protein', (68, 75)) ('tumor', 'Disease', (134, 139)) ('mutations', 'Var', (21, 30)) ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('MAX', 'Gene', '4149', (17, 20)) ('tumor', 'Disease', 'MESH:D009369', (134, 139)) ('MAX', 'Gene', (154, 157)) ('MAX', 'Gene', '4149', (64, 67)) 111423 31564906 Therefore, mutations in TMEM127 result in an increase in the mTOR signal, which may contribute to the development of PCC/PGL. ('contribute', 'Reg', (84, 94)) ('TMEM127', 'Gene', (24, 31)) ('mutations', 'Var', (11, 20)) ('TMEM127', 'Gene', '55654', (24, 31)) ('men', 'Species', '9606', (109, 112)) ('PCC/PGL', 'Disease', 'MESH:D010673', (117, 124)) ('mTOR', 'Gene', (61, 65)) ('mTOR', 'Gene', '2475', (61, 65)) ('PCC/PGL', 'Disease', (117, 124)) ('increase', 'PosReg', (45, 53)) 111426 31564906 It was reported that a family with KIF1Bbeta gene mutations developed neuroblastoma, ganglioneuroma, PCC, and lung cancer. ('ganglioneuroma', 'Disease', (85, 99)) ('lung cancer', 'Disease', 'MESH:D008175', (110, 121)) ('ganglioneuroma', 'Phenotype', 'HP:0003005', (85, 99)) ('ganglioneuroma', 'Disease', 'MESH:D005729', (85, 99)) ('neuroblastoma', 'Disease', (70, 83)) ('developed', 'Reg', (60, 69)) ('mutations', 'Var', (50, 59)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (70, 83)) ('cancer', 'Phenotype', 'HP:0002664', (115, 121)) ('PCC', 'Gene', '1421', (101, 104)) ('lung cancer', 'Disease', (110, 121)) ('lung cancer', 'Phenotype', 'HP:0100526', (110, 121)) ('KIF1Bbeta', 'Gene', (35, 44)) ('PCC', 'Gene', (101, 104)) ('neuroblastoma', 'Disease', 'MESH:D009447', (70, 83)) 111429 31564906 About one-fifth of sporadic PCCs may have somatic NF1 mutations and the loss of heterozygosity in NF1 suggests that loss of function may be the primary mechanism of NF1 alteration in PCC/PGL. ('PCC/PGL', 'Disease', (183, 190)) ('PCC', 'Gene', '1421', (28, 31)) ('NF1', 'Gene', (50, 53)) ('mutations', 'Var', (54, 63)) ('PCC', 'Gene', '1421', (183, 186)) ('NF1', 'Gene', '4763', (50, 53)) ('NF1', 'Gene', (98, 101)) ('PCC', 'Gene', (183, 186)) ('PCC', 'Gene', (28, 31)) ('NF1', 'Gene', '4763', (98, 101)) ('NF1', 'Gene', (165, 168)) ('PCC/PGL', 'Disease', 'MESH:D010673', (183, 190)) ('NF1', 'Gene', '4763', (165, 168)) 111430 31564906 There are many other recently discovered mutations that converge in this pathway, such as HRas proto-oncogene (HRAS), MET proto-oncogene (MET), and fibroblast growth factor receptor 1 (FGFR1). ('mutations', 'Var', (41, 50)) ('fibroblast growth factor receptor 1', 'Gene', (148, 183)) ('HRAS', 'Gene', '3265', (111, 115)) ('HRAS', 'Gene', (111, 115)) ('FGFR1', 'Gene', (185, 190)) ('MET', 'Gene', (138, 141)) ('HRas', 'Gene', '3265', (90, 94)) ('FGFR1', 'Gene', '2260', (185, 190)) ('fibroblast growth factor receptor 1', 'Gene', '2260', (148, 183)) ('HRas', 'Gene', (90, 94)) 111431 31564906 The first HRAS mutation found in a patient with PCC was reported by Yoshimoto in 1992. ('mutation', 'Var', (15, 23)) ('HRAS', 'Gene', (10, 14)) ('PCC', 'Gene', '1421', (48, 51)) ('patient', 'Species', '9606', (35, 42)) ('PCC', 'Gene', (48, 51)) ('HRAS', 'Gene', '3265', (10, 14)) 111433 31564906 In addition, MET may also have a relationship with PCC/PGL predisposition. ('PCC/PGL', 'Disease', (51, 58)) ('relationship', 'Reg', (33, 45)) ('PCC/PGL', 'Disease', 'MESH:D010673', (51, 58)) ('MET', 'Var', (13, 16)) 111438 31564906 Therefore, the dysregulation of FGFR1 signaling leads to the development, proliferation, survival, and metastasis of tumors. ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('FGFR1', 'Gene', (32, 37)) ('development', 'CPA', (61, 72)) ('tumors', 'Phenotype', 'HP:0002664', (117, 123)) ('leads to', 'Reg', (48, 56)) ('survival', 'CPA', (89, 97)) ('FGFR1', 'Gene', '2260', (32, 37)) ('metastasis of tumors', 'Disease', 'MESH:D009362', (103, 123)) ('proliferation', 'CPA', (74, 87)) ('men', 'Species', '9606', (68, 71)) ('metastasis of tumors', 'Disease', (103, 123)) ('dysregulation', 'Var', (15, 28)) 111451 31564906 Both VHL mutations and SDHx mutations can cause HIF-alpha accumulation, leading to elevated VEGF and PDGF. ('SDH', 'Gene', (23, 26)) ('VEGF', 'Gene', '7422', (92, 96)) ('mutations', 'Var', (9, 18)) ('VHL', 'Gene', (5, 8)) ('PDGF', 'Gene', (101, 105)) ('cause', 'Reg', (42, 47)) ('VEGF', 'Gene', (92, 96)) ('SDH', 'Gene', '6390', (23, 26)) ('PDGF', 'Gene', '5155', (101, 105)) ('elevated', 'PosReg', (83, 91)) ('mutations', 'Var', (28, 37)) 111453 31564906 Experiments have shown that knocking out VEGFR-2 attenuated the effects of sunitinib. ('VEGFR-2', 'Gene', '3791', (41, 48)) ('effects', 'MPA', (64, 71)) ('sunitinib', 'Chemical', 'MESH:C473478', (75, 84)) ('attenuated', 'NegReg', (49, 59)) ('VEGFR-2', 'Gene', (41, 48)) ('knocking out', 'Var', (28, 40)) ('men', 'Species', '9606', (6, 9)) 111454 31564906 In addition, for another mechanism of PCC, the PI3K/AKT/mTOR pathway, sunitinib inhibits phosphorylation of AKT and mTOR, thereby inhibiting cell proliferation, angiogenesis, and apoptosis escaping. ('inhibiting', 'NegReg', (130, 140)) ('phosphorylation', 'MPA', (89, 104)) ('PCC', 'Gene', '1421', (38, 41)) ('mTOR', 'Gene', (56, 60)) ('mTOR', 'Gene', '2475', (56, 60)) ('apoptosis escaping', 'CPA', (179, 197)) ('sunitinib', 'Var', (70, 79)) ('angiogenesis', 'CPA', (161, 173)) ('cell proliferation', 'CPA', (141, 159)) ('PCC', 'Gene', (38, 41)) ('inhibits', 'NegReg', (80, 88)) ('mTOR', 'Gene', (116, 120)) ('mTOR', 'Gene', '2475', (116, 120)) ('sunitinib', 'Chemical', 'MESH:C473478', (70, 79)) ('AKT', 'Pathway', (108, 111)) 111466 31564906 AZD8055 is a novel ATP-competitive mTOR inhibitor that can be administered orally and has good selectivity. ('ATP', 'Chemical', 'MESH:D000255', (19, 22)) ('mTOR', 'Gene', (35, 39)) ('AZD8055', 'Var', (0, 7)) ('mTOR', 'Gene', '2475', (35, 39)) ('AZD8055', 'Chemical', 'MESH:C546624', (0, 7)) 111467 31564906 Furthermore, in inhibitory effects of AZD8055, mTOR is approximately 1000 times more than all class I PI3K isoenzymes and other PI3K-like kinase family members. ('inhibitory effects', 'MPA', (16, 34)) ('AZD8055', 'Chemical', 'MESH:C546624', (38, 45)) ('AZD8055', 'Var', (38, 45)) ('mTOR', 'Gene', '2475', (47, 51)) ('mTOR', 'Gene', (47, 51)) ('more', 'PosReg', (80, 84)) 111468 31564906 AZD8055 can inhibit S6K1 and 4e-bp-1 which are the downstream factors of mTOR complex 1. ('mTOR', 'Gene', '2475', (73, 77)) ('inhibit', 'NegReg', (12, 19)) ('mTOR', 'Gene', (73, 77)) ('AZD8055', 'Var', (0, 7)) ('4e-bp-1', 'Enzyme', (29, 36)) ('AZD8055', 'Chemical', 'MESH:C546624', (0, 7)) ('S6K1', 'Enzyme', (20, 24)) 111471 31564906 In a mouse xenograft model, AZD8055 inhibited the phosphorylation of S6K1 and AKT in a concentration-dependent manner thus effectively inhibited tumor growth. ('phosphorylation', 'MPA', (50, 65)) ('inhibited', 'NegReg', (36, 45)) ('S6K1', 'Protein', (69, 73)) ('tumor', 'Disease', 'MESH:D009369', (145, 150)) ('AZD8055', 'Var', (28, 35)) ('AZD8055', 'Chemical', 'MESH:C546624', (28, 35)) ('AKT', 'Pathway', (78, 81)) ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('tumor', 'Disease', (145, 150)) ('mouse', 'Species', '10090', (5, 10)) ('inhibited', 'NegReg', (135, 144)) 111472 31564906 Alessio Giubellino found that AZD8055 could significantly reduce volume of tumor in a female athymic mouse of metastatic PCC/PGL. ('PCC/PGL', 'Disease', (121, 128)) ('mouse', 'Species', '10090', (101, 106)) ('tumor', 'Disease', 'MESH:D009369', (75, 80)) ('reduce', 'NegReg', (58, 64)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('PCC/PGL', 'Disease', 'MESH:D010673', (121, 128)) ('AZD8055', 'Var', (30, 37)) ('tumor', 'Disease', (75, 80)) ('AZD8055', 'Chemical', 'MESH:C546624', (30, 37)) 111473 31564906 Torin1 is one of mTOR kinase inhibitors and others including Torin2, PP242, PP30, KU0063794, WAY-600, WYE-687, WYE-354, OSI-027, AZD-8055, KU-BMCL-200908069-1, Wyeth-BMCL- 200908069-2, XL-388, INK-128he, and AZD-2014 and some have entered different clinical trials. ('KU0063794', 'Chemical', 'MESH:C541932', (82, 91)) ('KU0063794', 'Var', (82, 91)) ('PP30', 'Var', (76, 80)) ('PP242', 'Chemical', 'MESH:C572919', (69, 74)) ('WYE-354', 'Var', (111, 118)) ('Torin', 'Gene', '7001', (61, 66)) ('WYE-687', 'Chemical', 'MESH:C077122', (102, 109)) ('mTOR', 'Gene', (17, 21)) ('Torin', 'Gene', (61, 66)) ('AZD-8055', 'Chemical', 'MESH:C546624', (129, 137)) ('AZD-2014', 'Chemical', 'MESH:C585537', (208, 216)) ('KU-BMCL-200908069-1', 'Var', (139, 158)) ('Torin', 'Gene', '7001', (0, 5)) ('Torin', 'Gene', (0, 5)) ('WYE-687', 'Var', (102, 109)) ('mTOR', 'Gene', '2475', (17, 21)) ('PP242', 'Var', (69, 74)) ('N', 'Chemical', 'MESH:D009584', (194, 195)) 111481 31564906 Another Hsp90 inhibitor VER-52296 can be used as a better small molecule inhibitor that is toxic to tumor cells while avoiding adverse effects of 17-AAG medicines. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('VER-52296', 'Chemical', 'MESH:C528044', (24, 33)) ('tumor', 'Disease', (100, 105)) ('Hsp90', 'Protein', (8, 13)) ('VER-52296', 'Var', (24, 33)) ('tumor', 'Disease', 'MESH:D009369', (100, 105)) 111482 31564906 VER52296 mainly inhibits the activity of HSP90 protein by binding to the N-terminal domain of HSP90 protein and promotes the anti-tumor effect of its client protein activity. ('N', 'Chemical', 'MESH:D009584', (73, 74)) ('VER52296', 'Var', (0, 8)) ('binding', 'Interaction', (58, 65)) ('promotes', 'PosReg', (112, 120)) ('protein', 'Protein', (100, 107)) ('HSP90', 'Gene', '3320', (94, 99)) ('tumor', 'Disease', 'MESH:D009369', (130, 135)) ('activity', 'MPA', (29, 37)) ('HSP90', 'Gene', (41, 46)) ('HSP90', 'Gene', '3320', (41, 46)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('client protein activity', 'MPA', (150, 173)) ('inhibits', 'NegReg', (16, 24)) ('HSP90', 'Gene', (94, 99)) ('VER52296', 'Chemical', 'MESH:C528044', (0, 8)) ('tumor', 'Disease', (130, 135)) 111483 31564906 In addition, Xu et al found that VER-52296 can effectively inhibit the growth of tumors and the effects of inducing apoptosis on metastatic PCCs are shown both in vitro. ('tumors', 'Disease', (81, 87)) ('VER-52296', 'Var', (33, 42)) ('tumors', 'Disease', 'MESH:D009369', (81, 87)) ('apoptosis', 'CPA', (116, 125)) ('inducing', 'Reg', (107, 115)) ('PCC', 'Gene', (140, 143)) ('VER-52296', 'Chemical', 'MESH:C528044', (33, 42)) ('metastatic', 'CPA', (129, 139)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('inhibit', 'NegReg', (59, 66)) ('PCC', 'Gene', '1421', (140, 143)) ('tumors', 'Phenotype', 'HP:0002664', (81, 87)) 111484 31564906 Therefore, VER-52296 will be a very reasonable and effective option for the treatment of metastatic PCCs, either alone or in combination with other medicines. ('VER-52296', 'Chemical', 'MESH:C528044', (11, 20)) ('men', 'Species', '9606', (81, 84)) ('PCC', 'Gene', (100, 103)) ('VER-52296', 'Var', (11, 20)) ('PCC', 'Gene', '1421', (100, 103)) 111485 31564906 Cell experiments showed that VER-52296 significantly inhibited the proliferation and migration of PC12 cells in a time- and dose-dependent manner, and apoptosis and cell cycle arrest were observed in cells exposed to VER-52296. ('cell cycle arrest', 'Phenotype', 'HP:0011018', (165, 182)) ('inhibited', 'NegReg', (53, 62)) ('cell cycle arrest', 'CPA', (165, 182)) ('VER-52296', 'Var', (29, 38)) ('VER-52296', 'Chemical', 'MESH:C528044', (217, 226)) ('VER-52296', 'Chemical', 'MESH:C528044', (29, 38)) ('proliferation', 'CPA', (67, 80)) ('VER-52296', 'Var', (217, 226)) ('apoptosis', 'CPA', (151, 160)) ('men', 'Species', '9606', (11, 14)) 111486 31564906 Therefore, it was speculated that VER-52296 might play a regulatory role by phosphorylation of HSP90-specifically related client proteins. ('VER-52296', 'Chemical', 'MESH:C528044', (34, 43)) ('HSP90', 'Gene', (95, 100)) ('HSP90', 'Gene', '3320', (95, 100)) ('phosphorylation', 'MPA', (76, 91)) ('VER-52296', 'Var', (34, 43)) 111487 31564906 Noteworthily, exposure of HSP70 to VER-52296 for 24 hrs showed a relationship with upregulation of dose-dependent expression, which is a typical marker for HSP90 inhibition. ('HSP90', 'Gene', (156, 161)) ('HSP90', 'Gene', '3320', (156, 161)) ('dose-dependent expression', 'MPA', (99, 124)) ('upregulation', 'PosReg', (83, 95)) ('HSP70', 'Gene', '3308', (26, 31)) ('VER-52296', 'Chemical', 'MESH:C528044', (35, 44)) ('N', 'Chemical', 'MESH:D009584', (0, 1)) ('HSP70', 'Gene', (26, 31)) ('VER-52296', 'Var', (35, 44)) 111488 31564906 In sharp contrast, phosphorylated AKT, MEK, and ERK were significantly downregulated after exposure to VER-52296 while the expression of total protein of these three signal proteins did not change significantly. ('ERK', 'Gene', (48, 51)) ('downregulated', 'NegReg', (71, 84)) ('VER-52296', 'Chemical', 'MESH:C528044', (103, 112)) ('phosphorylated', 'MPA', (19, 33)) ('VER-52296', 'Var', (103, 112)) ('ERK', 'Gene', '5594', (48, 51)) ('MEK', 'Gene', (39, 42)) ('MEK', 'Gene', '5609', (39, 42)) 111489 31564906 The study indicated that the inhibition of PI3K/AKT and MEK/ERK signal pathways produced by VER-52296 could provide a reasonable explanation for its obvious promotion in apoptosis and significant promotion in cell cycle quiescence. ('ERK', 'Gene', '5594', (60, 63)) ('inhibition', 'NegReg', (29, 39)) ('VER-52296', 'Var', (92, 101)) ('PI3K/AKT', 'Pathway', (43, 51)) ('ERK', 'Gene', (60, 63)) ('VER-52296', 'Chemical', 'MESH:C528044', (92, 101)) ('MEK', 'Gene', (56, 59)) ('MEK', 'Gene', '5609', (56, 59)) ('promotion', 'PosReg', (157, 166)) ('cell cycle quiescence', 'CPA', (209, 230)) ('apoptosis', 'CPA', (170, 179)) ('promotion', 'PosReg', (196, 205)) 111493 31564906 In preclinical studies, perifosine inhibits the proliferation of immortalized keratinocytes (HaCaT cells) and squamous cell carcinoma of the head and neck. ('perifosine', 'Var', (24, 34)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (110, 133)) ('squamous cell carcinoma of the head', 'Disease', (110, 145)) ('carcinoma', 'Phenotype', 'HP:0030731', (124, 133)) ('proliferation', 'CPA', (48, 61)) ('inhibits', 'NegReg', (35, 43)) ('perifosine', 'Chemical', 'MESH:C105905', (24, 34)) ('squamous cell carcinoma of the head', 'Disease', 'MESH:D002294', (110, 145)) ('carcinoma of the head and neck', 'Phenotype', 'HP:0012288', (124, 154)) 111500 31564906 Although many preclinical studies have documents on AKT inhibition by perifosine, clinical validation of these findings is still lacking. ('inhibition', 'NegReg', (56, 66)) ('perifosine', 'Var', (70, 80)) ('men', 'Species', '9606', (43, 46)) ('perifosine', 'Chemical', 'MESH:C105905', (70, 80)) ('AKT', 'Pathway', (52, 55)) 111505 31564906 Although PI3K inhibitors can avoid activation of AKT, they do not show significant clinical advantages which may be related to the early stage of PI3K inhibitor development. ('PI3K', 'Var', (9, 13)) ('men', 'Species', '9606', (168, 171)) ('AKT', 'Pathway', (49, 52)) 111507 31564906 Ethacrynic acid is a diuretic that increases urination mainly by inhibiting the active reabsorption of NaCl in thick sections of the renal tubules. ('Ethacrynic', 'Var', (0, 10)) ('increases', 'PosReg', (35, 44)) ('active reabsorption of NaCl', 'MPA', (80, 107)) ('inhibiting', 'NegReg', (65, 75)) ('NaCl', 'Chemical', 'MESH:D012965', (103, 107)) ('Ethacrynic acid', 'Chemical', 'MESH:D004976', (0, 15)) ('active reabsorption of NaCl', 'Phenotype', 'HP:0005579', (80, 107)) ('urination', 'MPA', (45, 54)) 111517 31564906 Thus, anthracyclines are promising candidates for inclusion in metastatic PCC therapies, especially for patients who have gene mutations in the hypoxia signal pathway. ('PCC', 'Gene', (74, 77)) ('hypoxia', 'Disease', (144, 151)) ('hypoxia', 'Disease', 'MESH:D000860', (144, 151)) ('gene mutations', 'Var', (122, 136)) ('anthracyclines', 'Chemical', 'MESH:D018943', (6, 20)) ('PCC', 'Gene', '1421', (74, 77)) ('patients', 'Species', '9606', (104, 112)) 111518 31564906 HIF is a key regulator of tumor environment, so some agents like PX-12and PX-478 play a role in inhibiting tumor activity by inhibiting HIF. ('PX-478', 'Var', (74, 80)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumor', 'Disease', (107, 112)) ('tumor', 'Disease', 'MESH:D009369', (26, 31)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('inhibiting', 'NegReg', (96, 106)) ('inhibiting', 'NegReg', (125, 135)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) ('tumor', 'Disease', (26, 31)) ('HIF', 'MPA', (136, 139)) 111527 31564906 Last but not least, telomerase reverse transcriptase (TERT) activation is also a potential target, particularly for metastatic tumors, because immortalization in primary PCC/PGL could be an important risk factor for metastasis. ('telomerase reverse transcriptase', 'Gene', (20, 52)) ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('PCC/PGL', 'Disease', (170, 177)) ('tumors', 'Disease', (127, 133)) ('TERT', 'Gene', '7015', (54, 58)) ('PCC/PGL', 'Disease', 'MESH:D010673', (170, 177)) ('telomerase reverse transcriptase', 'Gene', '7015', (20, 52)) ('tumors', 'Phenotype', 'HP:0002664', (127, 133)) ('tumors', 'Disease', 'MESH:D009369', (127, 133)) ('immortalization', 'Var', (143, 158)) ('TERT', 'Gene', (54, 58)) 111531 31564906 The growth-inhibiting effects of AZD8055 and Torin-1 that are the inhibitors of mTOR were evaluated in human primary cells derived from PCC/PGL patients' donated tumor tissue. ('Torin', 'Gene', '7001', (45, 50)) ('tumor', 'Phenotype', 'HP:0002664', (162, 167)) ('human', 'Species', '9606', (103, 108)) ('mTOR', 'Gene', (80, 84)) ('PCC/PGL', 'Disease', (136, 143)) ('tumor', 'Disease', (162, 167)) ('PCC/PGL', 'Disease', 'MESH:D010673', (136, 143)) ('mTOR', 'Gene', '2475', (80, 84)) ('growth-inhibiting', 'CPA', (4, 21)) ('AZD8055', 'Chemical', 'MESH:C546624', (33, 40)) ('patients', 'Species', '9606', (144, 152)) ('AZD8055', 'Var', (33, 40)) ('tumor', 'Disease', 'MESH:D009369', (162, 167)) ('Torin', 'Gene', (45, 50)) 111532 31564906 Combined use of AZD8055 with Torin-1 reduced the number of tyrosine hydroxylase positive cells to 50% compared with the control cells, confirming the cytotoxic effect on human PCC/PGL cells. ('Torin', 'Gene', (29, 34)) ('Torin', 'Gene', '7001', (29, 34)) ('PCC/PGL', 'Disease', 'MESH:D010673', (176, 183)) ('tyrosine hydroxylase', 'Gene', (59, 79)) ('AZD8055', 'Var', (16, 23)) ('AZD8055', 'Chemical', 'MESH:C546624', (16, 23)) ('human', 'Species', '9606', (170, 175)) ('reduced', 'NegReg', (37, 44)) ('tyrosine hydroxylase', 'Gene', '7054', (59, 79)) ('PCC/PGL', 'Disease', (176, 183)) 111535 31564906 The combination of SCH772984, an ERK inhibitor, with everolimus, an mTOR inhibitor, inhibited the proliferation of RCC cells synergistically by blocking the G1 phase cell cycle. ('everolimus', 'Chemical', 'MESH:C107135', (53, 63)) ('SCH772984', 'Chemical', 'MESH:C587178', (19, 28)) ('RCC', 'Phenotype', 'HP:0005584', (115, 118)) ('ERK', 'Gene', '5594', (33, 36)) ('RCC', 'Disease', 'MESH:D002292', (115, 118)) ('RCC', 'Disease', (115, 118)) ('mTOR', 'Gene', '2475', (68, 72)) ('G1 phase cell cycle', 'CPA', (157, 176)) ('ERK', 'Gene', (33, 36)) ('mTOR', 'Gene', (68, 72)) ('SCH772984', 'Var', (19, 28)) ('combination', 'Interaction', (4, 15)) ('proliferation', 'CPA', (98, 111)) ('blocking', 'NegReg', (144, 152)) ('inhibited', 'NegReg', (84, 93)) 111541 31564906 For instance, the combination of BKM120 (a selective inhibitor of PI3K) and GSK1120212 (a MEK inhibitor) has entered the clinical trial phase I. ('BKM120', 'Var', (33, 39)) ('MEK', 'Gene', (90, 93)) ('GSK1120212', 'Gene', (76, 86)) ('MEK', 'Gene', '5609', (90, 93)) ('GSK1120212', 'Chemical', 'MESH:C560077', (76, 86)) 111542 31564906 Last but not least, combination of olaparib and temozolomide can reduce the tumor burden and metastatic lesions of SDHB mutant PCC/PGL. ('SDHB', 'Gene', '6390', (115, 119)) ('metastatic lesions', 'CPA', (93, 111)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('SDHB', 'Gene', (115, 119)) ('tumor', 'Disease', (76, 81)) ('PCC/PGL', 'Disease', 'MESH:D010673', (127, 134)) ('reduce', 'NegReg', (65, 71)) ('PCC/PGL', 'Disease', (127, 134)) ('temozolomide', 'Chemical', 'MESH:C047246', (48, 60)) ('mutant', 'Var', (120, 126)) ('tumor', 'Disease', 'MESH:D009369', (76, 81)) 111544 31564906 The PCC/PGL with SDHB mutants exhibited a reprogrammed mitochondrial complex I. Elevation of NAD+ is an important cofactor that supports the PARP DNA repair pathway, leading to resistance to SDHB-related PCC/PGL. ('PCC/PGL', 'Disease', (204, 211)) ('SDHB', 'Gene', (191, 195)) ('PARP', 'Gene', '142', (141, 145)) ('NAD+', 'MPA', (93, 97)) ('resistance', 'MPA', (177, 187)) ('SDHB', 'Gene', '6390', (17, 21)) ('NAD', 'Chemical', 'MESH:D009243', (93, 96)) ('PARP', 'Gene', (141, 145)) ('N', 'Chemical', 'MESH:D009584', (147, 148)) ('PCC/PGL', 'Disease', 'MESH:D010673', (4, 11)) ('mutants', 'Var', (22, 29)) ('SDHB', 'Gene', (17, 21)) ('N', 'Chemical', 'MESH:D009584', (93, 94)) ('PCC/PGL', 'Disease', (4, 11)) ('SDHB', 'Gene', '6390', (191, 195)) ('PCC/PGL', 'Disease', 'MESH:D010673', (204, 211)) 111549 31564906 The molecular pathogenetic mechanism of PCC/PGL shows that the mutations of SDHx, FH, PHD2, VHL, and HIF influenced the hypoxia-related signaling, while the mutations of RET, MAX, TMEM127, NF1, KIF1Bbeta, HRAS, MET, and FGFR1 influenced the increased kinase signaling. ('MAX', 'Gene', '4149', (175, 178)) ('influenced', 'Reg', (105, 115)) ('SDH', 'Gene', (76, 79)) ('NF1', 'Gene', '4763', (189, 192)) ('FGFR1', 'Gene', '2260', (220, 225)) ('mutations', 'Var', (63, 72)) ('RET', 'Gene', (170, 173)) ('PHD2', 'Gene', (86, 90)) ('PCC/PGL', 'Disease', 'MESH:D010673', (40, 47)) ('VHL', 'Gene', (92, 95)) ('hypoxia', 'Disease', (120, 127)) ('NF1', 'Gene', (189, 192)) ('PHD2', 'Gene', '54583', (86, 90)) ('MAX', 'Gene', (175, 178)) ('increased', 'PosReg', (241, 250)) ('kinase signaling', 'MPA', (251, 267)) ('TMEM127', 'Gene', (180, 187)) ('hypoxia', 'Disease', 'MESH:D000860', (120, 127)) ('FGFR1', 'Gene', (220, 225)) ('FH', 'Gene', '2271', (82, 84)) ('HRAS', 'Gene', '3265', (205, 209)) ('SDH', 'Gene', '6390', (76, 79)) ('PCC/PGL', 'Disease', (40, 47)) ('TMEM127', 'Gene', '55654', (180, 187)) ('RET', 'Gene', '5979', (170, 173)) ('HRAS', 'Gene', (205, 209)) 111557 30925729 PCPGs result from genetic abnormalities, mostly disruption/mutation in single disease-related genes. ('genetic abnormalities', 'Disease', (18, 39)) ('genetic abnormalities', 'Disease', 'MESH:D030342', (18, 39)) ('result from', 'Reg', (6, 17)) ('disruption/mutation', 'Var', (48, 67)) ('PCPGs', 'Disease', (0, 5)) 111558 30925729 Approximately 30-35% of patients with PCPG carry germline mutations in over 20 susceptible genes. ('germline mutations', 'Var', (49, 67)) ('patients', 'Species', '9606', (24, 32)) ('PCPG', 'Disease', (38, 42)) 111559 30925729 In pediatric patients, or in patients who developed the origin tumor in their childhood, approximately 69-87.5% of cases carry germline mutations. ('tumor', 'Disease', (63, 68)) ('patients', 'Species', '9606', (29, 37)) ('patients', 'Species', '9606', (13, 21)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('germline mutations', 'Var', (127, 145)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) 111560 30925729 Germline mutations may lead to clinical syndromes with symptoms that affect multiple organs, such as von Hippel-Lindau disease, multiple endocrine neoplasia type 2 syndrome, and neurofibromatosis type 1. ('Germline mutations', 'Var', (0, 18)) ('neoplasia', 'Phenotype', 'HP:0002664', (147, 156)) ('neurofibromatosis type 1', 'Gene', '4763', (178, 202)) ('lead to', 'Reg', (23, 30)) ('neurofibromatosis type 1', 'Gene', (178, 202)) ('multiple endocrine neoplasia type 2 syndrome', 'Disease', 'MESH:D018813', (128, 172)) ('von Hippel-Lindau disease', 'Disease', (101, 126)) ('von Hippel-Lindau disease', 'Disease', 'MESH:D006623', (101, 126)) ('multiple endocrine neoplasia type 2 syndrome', 'Disease', (128, 172)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (137, 156)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (178, 195)) 111567 30925729 Cluster I disease exhibits metabolic reprogramming and pseudo hypoxic signaling commonly linked to mutations in oxygen-sensing genes or those encoding key enzymes in the Krebs cycle such as VHL, SDHx, HIF2A, EGLN1/2 and FH. ('Cluster I disease', 'Disease', (0, 17)) ('hypoxic', 'Disease', (62, 69)) ('hypoxic', 'Disease', 'MESH:D000860', (62, 69)) ('HIF2A', 'Gene', (201, 206)) ('EGLN1/2 and FH', 'Gene', '54583;112398', (208, 222)) ('Cluster I disease', 'Disease', 'MESH:D003027', (0, 17)) ('SDHx', 'Chemical', '-', (195, 199)) ('mutations', 'Var', (99, 108)) ('HIF2A', 'Gene', '2034', (201, 206)) ('Krebs', 'Chemical', '-', (170, 175)) ('oxygen', 'Chemical', 'MESH:D010100', (112, 118)) 111569 30925729 PCPGs showing mutation of SDHx and VHL are sub-characterized into Cluster IA and Cluster IB, respectively. ('SDHx', 'Gene', (26, 30)) ('mutation', 'Var', (14, 22)) ('SDHx', 'Chemical', '-', (26, 30)) ('VHL', 'Gene', (35, 38)) 111570 30925729 In contrast, Cluster II PCPGs are commonly related to genetic mutations affecting kinase signaling, gene translation, protein synthesis and neural differentiation; the genes showing mutations include NF1, RET, KIF1Bbeta, TMEM127 and MAX. ('RET', 'Gene', (205, 208)) ('NF1', 'Gene', (200, 203)) ('TMEM127', 'Gene', (221, 228)) ('TMEM127', 'Gene', '55654', (221, 228)) ('RET', 'Gene', '5979', (205, 208)) ('mutations', 'Var', (182, 191)) 111571 30925729 Cluster II disease is further categorized into Cluster 2A (in which patient show mutations in RET, NF1, and TMEM127 ), Cluster 2B (sporadic tumors) and Cluster 2C (patients with mutations in 3.7% VHL and 11.1% RET, and sporadic tumors). ('RET', 'Gene', (210, 213)) ('tumors', 'Phenotype', 'HP:0002664', (228, 234)) ('VHL', 'Gene', (196, 199)) ('mutations', 'Var', (81, 90)) ('Cluster II disease', 'Disease', (0, 18)) ('tumors', 'Phenotype', 'HP:0002664', (140, 146)) ('RET', 'Gene', '5979', (94, 97)) ('tumor', 'Phenotype', 'HP:0002664', (228, 233)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('patients', 'Species', '9606', (164, 172)) ('TMEM127', 'Gene', (108, 115)) ('Cluster II disease', 'Disease', 'MESH:D003027', (0, 18)) ('patient', 'Species', '9606', (164, 171)) ('NF1', 'Gene', (99, 102)) ('RET', 'Gene', (94, 97)) ('sporadic tumors', 'Disease', (219, 234)) ('sporadic tumors', 'Disease', (131, 146)) ('TMEM127', 'Gene', '55654', (108, 115)) ('RET', 'Gene', '5979', (210, 213)) ('patient', 'Species', '9606', (68, 75)) ('sporadic tumors', 'Disease', 'MESH:D009369', (219, 234)) ('sporadic tumors', 'Disease', 'MESH:D009369', (131, 146)) 111572 30925729 discovered that the in-frame RNA fusion transcripts of the UBTF-MAML3 gene and somatic CSDE1 mutation may drive activation of the Wnt and Hedgehog pathways, and trigger PCPG oncogenesis. ('CSDE1', 'Gene', (87, 92)) ('CSDE1', 'Gene', '7812', (87, 92)) ('MAML3', 'Gene', '55534', (64, 69)) ('drive activation', 'PosReg', (106, 122)) ('MAML3', 'Gene', (64, 69)) ('PCPG', 'Disease', (169, 173)) ('trigger', 'Reg', (161, 168)) ('mutation', 'Var', (93, 101)) 111574 30925729 Germline mutations in SDHx are attributed to approximately half of hereditary PCPGs and are detected in 15% of total patients. ('Germline mutations', 'Var', (0, 18)) ('SDHx', 'Gene', (22, 26)) ('SDHx', 'Chemical', '-', (22, 26)) ('hereditary PCPGs', 'Disease', (67, 83)) ('patients', 'Species', '9606', (117, 125)) 111575 30925729 Germline mutations in SDHx are commonly accompanied by the loss of heterozygosity on the other healthy allele, which leads to substantial loss of SDH catalytic activity. ('Germline mutations', 'Var', (0, 18)) ('loss', 'NegReg', (138, 142)) ('SDHx', 'Chemical', '-', (22, 26)) ('SDH', 'Gene', '6390', (146, 149)) ('SDH', 'Gene', '6390', (22, 25)) ('SDH', 'Gene', (146, 149)) ('SDH', 'Gene', (22, 25)) 111578 30925729 SDHC mutations account for 6% of PCPGs, and patients usually present head and neck paragangliomas (HNPGL), while PHEO and PGL occur far less frequently. ('patients', 'Species', '9606', (44, 52)) ('neck paragangliomas', 'Disease', (78, 97)) ('SDHC', 'Gene', (0, 4)) ('paragangliomas', 'Phenotype', 'HP:0002668', (83, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('mutations', 'Var', (5, 14)) ('SDHC', 'Gene', '6391', (0, 4)) ('glioma', 'Phenotype', 'HP:0009733', (90, 96)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (69, 97)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (78, 97)) ('HNPGL', 'Phenotype', 'HP:0002864', (99, 104)) 111579 30925729 SDHD-mutant PCPGs typically show multiple HNPGL, but PGL and PHEO in other locales have also been described; less than 5% of patients with SDHD mutations develop metastatic lesions. ('HNPGL', 'Phenotype', 'HP:0002864', (42, 47)) ('SDHD', 'Gene', (139, 143)) ('SDHD', 'Gene', '6392', (139, 143)) ('metastatic lesions', 'CPA', (162, 180)) ('SDHD', 'Gene', '6392', (0, 4)) ('SDHD', 'Gene', (0, 4)) ('mutations', 'Var', (144, 153)) ('develop', 'PosReg', (154, 161)) ('patients', 'Species', '9606', (125, 133)) 111583 30925729 In 2001, mutations in SDHB were also discovered in patients with familial PCPG. ('discovered', 'Reg', (37, 47)) ('mutations', 'Var', (9, 18)) ('familial PCPG', 'Disease', (65, 78)) ('SDHB', 'Gene', (22, 26)) ('patients', 'Species', '9606', (51, 59)) 111588 30925729 Mutations in SDHA have not been identified as a cancer susceptibility gene in PCPG until recently. ('cancer', 'Phenotype', 'HP:0002664', (48, 54)) ('SDHA', 'Gene', '6389', (13, 17)) ('Mutations', 'Var', (0, 9)) ('cancer', 'Disease', (48, 54)) ('cancer', 'Disease', 'MESH:D009369', (48, 54)) ('SDHA', 'Gene', (13, 17)) 111599 30925729 Deleterious mutations in SDHx lead to deficiencies in energy metabolism and accumulation of succinate, which promotes susceptibility to PCPGs, renal cell carcinoma and mitochondrial encephalopathy. ('lead to', 'Reg', (30, 37)) ('deficiencies in energy metabolism', 'Disease', (38, 71)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (143, 163)) ('encephalopathy', 'Phenotype', 'HP:0001298', (182, 196)) ('SDHx', 'Gene', (25, 29)) ('deficiencies in energy metabolism', 'Disease', 'MESH:D008659', (38, 71)) ('encephalopathy', 'Disease', (182, 196)) ('mitochondrial encephalopathy', 'Phenotype', 'HP:0006789', (168, 196)) ('succinate', 'Chemical', 'MESH:D019802', (92, 101)) ('SDHx', 'Chemical', '-', (25, 29)) ('renal cell carcinoma', 'Disease', (143, 163)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (143, 163)) ('PCPGs', 'Disease', (136, 141)) ('mutations', 'Var', (12, 21)) ('accumulation of succinate', 'MPA', (76, 101)) ('carcinoma', 'Phenotype', 'HP:0030731', (154, 163)) ('encephalopathy', 'Disease', 'MESH:D001927', (182, 196)) ('susceptibility', 'Reg', (118, 132)) ('promotes', 'PosReg', (109, 117)) 111601 30925729 The distinctive signatures in tumor biology have supplied valuable clues for developing future molecular-targeted therapeutics against SDHx-mutant PCPGs. ('SDHx', 'Chemical', '-', (135, 139)) ('PCPGs', 'Disease', (147, 152)) ('tumor', 'Disease', 'MESH:D009369', (30, 35)) ('tumor', 'Phenotype', 'HP:0002664', (30, 35)) ('SDHx-mutant', 'Gene', (135, 146)) ('SDHx-mutant', 'Var', (135, 146)) ('tumor', 'Disease', (30, 35)) 111602 30925729 Germline mutations in the VHL gene cause the von Hippel-Lindau syndrome (VHL disease). ('Germline mutations', 'Var', (0, 18)) ('von Hippel-Lindau syndrome', 'Disease', (45, 71)) ('VHL disease', 'Disease', 'MESH:D006623', (73, 84)) ('VHL', 'Gene', (26, 29)) ('VHL disease', 'Disease', (73, 84)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (45, 71)) ('cause', 'Reg', (35, 40)) 111606 30925729 In addition to the VHL syndrome, Chuvash polycythemia is a type of inherited hematopoetic disease caused by a specific germline VHL mutation (p.R200W). ('p.R200W', 'Mutation', 'rs28940298', (142, 149)) ('Chuvash polycythemia', 'Disease', (33, 53)) ('inherited hematopoetic disease', 'Disease', 'MESH:D009190', (67, 97)) ('p.R200W', 'Var', (142, 149)) ('caused by', 'Reg', (98, 107)) ('VHL syndrome', 'Disease', (19, 31)) ('hematopoetic disease', 'Phenotype', 'HP:0001871', (77, 97)) ('polycythemia', 'Phenotype', 'HP:0001901', (41, 53)) ('VHL syndrome', 'Disease', 'MESH:D006623', (19, 31)) ('Chuvash polycythemia', 'Disease', 'MESH:C563918', (33, 53)) ('inherited hematopoetic disease', 'Disease', (67, 97)) ('VHL', 'Gene', (128, 131)) 111608 30925729 Germline VHL pathogenic mutations are also reported in patients with PHEO and polycythemia, causing by stabilized HIF-2alpha and elevated production of erythropoietin. ('HIF-2alpha', 'Gene', (114, 124)) ('polycythemia', 'Disease', (78, 90)) ('VHL', 'Gene', (9, 12)) ('elevated', 'PosReg', (129, 137)) ('polycythemia', 'Phenotype', 'HP:0001901', (78, 90)) ('erythropoietin', 'Gene', '2056', (152, 166)) ('polycythemia', 'Disease', 'MESH:D011086', (78, 90)) ('HIF-2alpha', 'Gene', '2034', (114, 124)) ('patients', 'Species', '9606', (55, 63)) ('mutations', 'Var', (24, 33)) ('PHEO', 'Disease', (69, 73)) ('erythropoietin', 'Gene', (152, 166)) 111609 30925729 Approximately 14% of sporadic PCPGs are found in patients carrying somatic VHL mutations, and this is consistently accompanied by the loss of the 3p chromosome. ('VHL', 'Gene', (75, 78)) ('sporadic', 'Disease', (21, 29)) ('patients', 'Species', '9606', (49, 57)) ('PCPGs', 'Disease', (30, 35)) ('mutations', 'Var', (79, 88)) 111610 30925729 Our previous study has shown that somatic VHL gene mutations are also involved in tumorigenesis in hereditary MEN 2A-associatd PHEO. ('mutations', 'Var', (51, 60)) ('tumor', 'Disease', 'MESH:D009369', (82, 87)) ('VHL gene', 'Gene', (42, 50)) ('MEN', 'Species', '9606', (110, 113)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('involved', 'Reg', (70, 78)) ('hereditary MEN 2A-associatd PHEO', 'Disease', (99, 131)) ('tumor', 'Disease', (82, 87)) 111611 30925729 Somatic VHL mutations play roles in HNPGL by stimulating the HIF-1alpha/miR-210 pathway. ('miR-210', 'Gene', '406992', (72, 79)) ('HIF-1alpha', 'Gene', '3091', (61, 71)) ('HNPGL', 'Disease', (36, 41)) ('mutations', 'Var', (12, 21)) ('stimulating', 'PosReg', (45, 56)) ('HIF-1alpha', 'Gene', (61, 71)) ('HNPGL', 'Phenotype', 'HP:0002864', (36, 41)) ('miR-210', 'Gene', (72, 79)) ('VHL', 'Gene', (8, 11)) 111619 30925729 Pathogenic VHL mutations lead to compromised VBC activity and abnormal oxygen sensing. ('abnormal oxygen sensing', 'Phenotype', 'HP:0500165', (62, 85)) ('Pathogenic', 'Reg', (0, 10)) ('mutations', 'Var', (15, 24)) ('VHL', 'Gene', (11, 14)) ('oxygen sensing', 'MPA', (71, 85)) ('VBC activity', 'MPA', (45, 57)) ('oxygen', 'Chemical', 'MESH:D010100', (71, 77)) 111621 30925729 Moreover, mutations in VHL may disrupt the binding of Elongin C and p53, leading to deregulation of cellular apoptosis and consequent tumorigenesis. ('binding', 'Interaction', (43, 50)) ('VHL', 'Gene', (23, 26)) ('disrupt', 'NegReg', (31, 38)) ('Elongin C', 'Gene', '6921', (54, 63)) ('Elongin C', 'Gene', (54, 63)) ('tumor', 'Disease', 'MESH:D009369', (134, 139)) ('cellular apoptosis', 'CPA', (100, 118)) ('p53', 'Gene', (68, 71)) ('p53', 'Gene', '7157', (68, 71)) ('tumor', 'Phenotype', 'HP:0002664', (134, 139)) ('mutations', 'Var', (10, 19)) ('tumor', 'Disease', (134, 139)) 111627 30925729 Overexpression of HIF-1/2alpha is frequently identified in most human cancers, and activation of tumorigenesis and angiogenesis. ('human', 'Species', '9606', (64, 69)) ('tumor', 'Disease', 'MESH:D009369', (97, 102)) ('angiogenesis', 'CPA', (115, 127)) ('cancer', 'Phenotype', 'HP:0002664', (70, 76)) ('tumor', 'Phenotype', 'HP:0002664', (97, 102)) ('HIF-1/2alpha', 'Gene', (18, 30)) ('tumor', 'Disease', (97, 102)) ('Overexpression', 'Var', (0, 14)) ('cancers', 'Disease', 'MESH:D009369', (70, 77)) ('cancers', 'Phenotype', 'HP:0002664', (70, 77)) ('HIF-1/2alpha', 'Gene', '3091;2034', (18, 30)) ('cancers', 'Disease', (70, 77)) ('activation', 'PosReg', (83, 93)) 111633 30925729 Mutations in HIF2A have been identified in human diseases such as polycythemia, PCPG and somatostatinoma. ('polycythemia', 'Disease', 'MESH:D011086', (66, 78)) ('HIF2A', 'Gene', '2034', (13, 18)) ('identified', 'Reg', (29, 39)) ('HIF2A', 'Gene', (13, 18)) ('Mutations', 'Var', (0, 9)) ('somatostatinoma', 'Disease', (89, 104)) ('PCPG', 'Disease', (80, 84)) ('somatostatinoma', 'Disease', 'MESH:D013005', (89, 104)) ('polycythemia', 'Disease', (66, 78)) ('polycythemia', 'Phenotype', 'HP:0001901', (66, 78)) ('human', 'Species', '9606', (43, 48)) 111634 30925729 HIF2A mutations present as somatic mutations or somatic mosaicism, affecting multiple lineages of somatic cells. ('HIF2A', 'Gene', '2034', (0, 5)) ('affecting', 'Reg', (67, 76)) ('mutations', 'Var', (6, 15)) ('HIF2A', 'Gene', (0, 5)) 111635 30925729 HIF2A mutations are mainly located on exon 12, resulting in amino-acid substitutions in the ODD domain of HIF-2alpha. ('HIF2A', 'Gene', '2034', (0, 5)) ('ODD', 'Gene', (92, 95)) ('HIF-2alpha', 'Gene', '2034', (106, 116)) ('amino-acid substitutions', 'Var', (60, 84)) ('HIF2A', 'Gene', (0, 5)) ('ODD', 'Gene', '130497', (92, 95)) ('mutations', 'Var', (6, 15)) ('HIF-2alpha', 'Gene', (106, 116)) 111636 30925729 Alterations in peptide sequences lead to compromised prolyl hydroxylation, VBC recognition and transcription of hypoxia-related genes. ('peptide', 'Protein', (15, 22)) ('recognition', 'MPA', (79, 90)) ('prolyl hydroxylation', 'MPA', (53, 73)) ('hypoxia', 'Disease', (112, 119)) ('hypoxia', 'Disease', 'MESH:D000860', (112, 119)) ('Alterations', 'Var', (0, 11)) ('compromised', 'NegReg', (41, 52)) ('rat', 'Species', '10116', (4, 7)) ('transcription', 'MPA', (95, 108)) ('VBC', 'Gene', (75, 78)) 111639 30925729 Mutations in NF1 are involved in numerous types of tumors such as desmoplastic melanoma, glioblastomas, neuroblastomas, PCPGs, gastrointestinal tumors, ovarian tumors and urinary tract transitional cell carcinoma. ('tumors', 'Disease', (144, 150)) ('gastrointestinal tumors', 'Disease', 'MESH:D004067', (127, 150)) ('neuroblastomas', 'Disease', (104, 118)) ('ovarian tumors', 'Phenotype', 'HP:0100615', (152, 166)) ('glioblastomas', 'Disease', 'MESH:D005909', (89, 102)) ('tumors', 'Disease', 'MESH:D009369', (51, 57)) ('tumor', 'Phenotype', 'HP:0002664', (160, 165)) ('tumors', 'Disease', (160, 166)) ('melanoma', 'Phenotype', 'HP:0002861', (79, 87)) ('neuroblastomas', 'Disease', 'MESH:D009447', (104, 118)) ('carcinoma', 'Disease', 'MESH:D002277', (203, 212)) ('desmoplastic melanoma', 'Disease', 'MESH:D008545', (66, 87)) ('tumors', 'Disease', 'MESH:D009369', (144, 150)) ('NF1', 'Gene', (13, 16)) ('Mutations', 'Var', (0, 9)) ('tumors', 'Disease', 'MESH:D009369', (160, 166)) ('desmoplastic melanoma', 'Disease', (66, 87)) ('ovarian tumors', 'Disease', (152, 166)) ('gastrointestinal tumors', 'Disease', (127, 150)) ('gastrointestinal tumors', 'Phenotype', 'HP:0007378', (127, 150)) ('glioblastomas', 'Phenotype', 'HP:0012174', (89, 102)) ('involved', 'Reg', (21, 29)) ('ovarian tumors', 'Disease', 'MESH:D010051', (152, 166)) ('tumors', 'Phenotype', 'HP:0002664', (51, 57)) ('PCPGs', 'Disease', (120, 125)) ('carcinoma', 'Phenotype', 'HP:0030731', (203, 212)) ('transitional cell carcinoma', 'Phenotype', 'HP:0006740', (185, 212)) ('tumors', 'Phenotype', 'HP:0002664', (144, 150)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('carcinoma', 'Disease', (203, 212)) ('tumors', 'Disease', (51, 57)) ('glioblastoma', 'Phenotype', 'HP:0012174', (89, 101)) ('glioblastomas', 'Disease', (89, 102)) ('tumors', 'Phenotype', 'HP:0002664', (160, 166)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) 111650 30925729 Currently, genetic detection and characterization of NF1 mutations in patients is challenging because of the large size of the NF1 gene, presence of multiple pseudogenes, and a wide spectrum of mutations without obvious hotspots. ('NF1', 'Gene', (53, 56)) ('mutations', 'Var', (57, 66)) ('NF1', 'Gene', (127, 130)) ('patients', 'Species', '9606', (70, 78)) 111653 30925729 Loss-of-function mutations in NF1 lead to uncontrollable activation of kinase and tumorigenesis. ('Loss-of-function', 'NegReg', (0, 16)) ('kinase', 'MPA', (71, 77)) ('NF1', 'Gene', (30, 33)) ('activation', 'PosReg', (57, 67)) ('tumor', 'Disease', 'MESH:D009369', (82, 87)) ('uncontrollable', 'MPA', (42, 56)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('tumor', 'Disease', (82, 87)) ('mutations', 'Var', (17, 26)) 111655 30925729 Germline mutations in RET are linked with multiple endocrine neoplasia type 2 (MEN2). ('Germline mutations', 'Var', (0, 18)) ('RET', 'Gene', (22, 25)) ('RET', 'Gene', '5979', (22, 25)) ('MEN', 'Species', '9606', (79, 82)) ('multiple endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (42, 77)) ('linked', 'Reg', (30, 36)) ('neoplasia', 'Phenotype', 'HP:0002664', (61, 70)) ('multiple endocrine neoplasia type 2', 'Disease', (42, 77)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (51, 70)) 111657 30925729 Patients with MEN2 have a nearly 100% risk for developing medullary thyroid carcinoma (MTC) and 57% risk for developing PHEO. ('carcinoma', 'Phenotype', 'HP:0030731', (76, 85)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (68, 85)) ('MTC', 'Phenotype', 'HP:0002865', (87, 90)) ('MEN', 'Species', '9606', (14, 17)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (68, 85)) ('Patients', 'Species', '9606', (0, 8)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (58, 85)) ('thyroid carcinoma', 'Disease', (68, 85)) ('MEN2', 'Var', (14, 18)) 111659 30925729 Although mutations in RET have been detected on all exons, 95% of patients with MEN2A carry RET mutations on exon 10 (codons 609, 611, 618 and 620) or exon 11 (codon 634). ('RET', 'Gene', (22, 25)) ('RET', 'Gene', (92, 95)) ('RET', 'Gene', '5979', (22, 25)) ('MEN2A', 'Gene', (80, 85)) ('patients', 'Species', '9606', (66, 74)) ('MEN2A', 'Gene', '5979', (80, 85)) ('RET', 'Gene', '5979', (92, 95)) ('mutations', 'Var', (96, 105)) 111660 30925729 Similarly, most mutations in patients with MEN2B occur on exon 16 (codon 918). ('patients', 'Species', '9606', (29, 37)) ('MEN2B', 'Gene', (43, 48)) ('mutations', 'Var', (16, 25)) ('MEN2B', 'Gene', '5979', (43, 48)) 111661 30925729 The most common RET mutations in PHEO-related syndrome usually occur on exon 10, 11, 13 and 16. ('RET', 'Gene', (16, 19)) ('PHEO-related syndrome', 'Disease', (33, 54)) ('RET', 'Gene', '5979', (16, 19)) ('mutations', 'Var', (20, 29)) 111669 30925729 Genetic alterations in RET include gain-of-function mutations, which lead to constitutive RTK activation and tumorigenesis such as those observed in patients with MEN2A. ('mutations', 'Var', (52, 61)) ('patients', 'Species', '9606', (149, 157)) ('RET', 'Gene', (23, 26)) ('rat', 'Species', '10116', (12, 15)) ('RTK', 'Protein', (90, 93)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('gain-of-function', 'PosReg', (35, 51)) ('MEN2A', 'Gene', (163, 168)) ('RET', 'Gene', '5979', (23, 26)) ('MEN2A', 'Gene', '5979', (163, 168)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('tumor', 'Disease', (109, 114)) ('activation', 'PosReg', (94, 104)) 111670 30925729 Loss of heterozygosity on the wild-type allele is also detected in the tumors of patients with germline missense mutations in MAX. ('germline', 'Var', (95, 103)) ('MAX', 'Gene', (126, 129)) ('patients', 'Species', '9606', (81, 89)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('tumors', 'Disease', (71, 77)) ('tumors', 'Disease', 'MESH:D009369', (71, 77)) 111671 30925729 Although metastatic PHEOs are rare, except in patients carrying SDHB mutations, Mendez found that approximately 37% of patients with MAX mutations present with metastases at diagnosis; this suggests MAX mutations may be risk factors for metastatic disease. ('mutations', 'Var', (69, 78)) ('patients', 'Species', '9606', (46, 54)) ('PHEOs', 'Chemical', '-', (20, 25)) ('metastases', 'Disease', (160, 170)) ('patients', 'Species', '9606', (119, 127)) ('mutations', 'Var', (137, 146)) ('metastatic disease', 'Disease', (237, 255)) ('SDHB', 'Gene', (64, 68)) ('metastases', 'Disease', 'MESH:D009362', (160, 170)) ('MAX', 'Gene', (133, 136)) 111672 30925729 Somatic MAX mutations are detected in patients with sporadic PCPGs at an incidence of 1.65%. ('mutations', 'Var', (12, 21)) ('MAX', 'Gene', (8, 11)) ('patients', 'Species', '9606', (38, 46)) ('PCPGs', 'Disease', (61, 66)) ('detected', 'Reg', (26, 34)) 111673 30925729 Tumors with MAX mutations show substantial upregulation of normetanephrine expression, with almost normal or slighted increased levels of metanephrine. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('normetanephrine expression', 'MPA', (59, 85)) ('metanephrine', 'Chemical', 'MESH:D008676', (62, 74)) ('metanephrine', 'Chemical', 'MESH:D008676', (138, 150)) ('mutations', 'Var', (16, 25)) ('Tumors', 'Disease', (0, 6)) ('MAX', 'Gene', (12, 15)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('upregulation', 'PosReg', (43, 55)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('normetanephrine', 'Chemical', 'MESH:D009647', (59, 74)) 111676 30925729 Therefore, alteration in MAX, especially mutations on the bHLHZ domain and casein kinase II phosphorylation sites, can induce the dysfunction of the MYC/MAX/MXD1 axis and consequent tumorigenesis. ('mutations', 'Var', (41, 50)) ('MAX', 'Gene', (25, 28)) ('rat', 'Species', '10116', (15, 18)) ('tumor', 'Disease', (182, 187)) ('MXD1', 'Gene', '4084', (157, 161)) ('MYC', 'Gene', (149, 152)) ('MYC', 'Gene', '4609', (149, 152)) ('alteration', 'Var', (11, 21)) ('tumor', 'Disease', 'MESH:D009369', (182, 187)) ('dysfunction', 'MPA', (130, 141)) ('MXD1', 'Gene', (157, 161)) ('induce', 'Reg', (119, 125)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) 111678 30925729 Missense gain-of-function mutations in HRAS have been detected in various types of human tumors; the hotspots for HRAS mutations are G13R and Q61K. ('tumors', 'Disease', (89, 95)) ('gain-of-function', 'PosReg', (9, 25)) ('Q61K', 'Mutation', 'rs28933406', (142, 146)) ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('tumors', 'Disease', 'MESH:D009369', (89, 95)) ('human', 'Species', '9606', (83, 88)) ('HRAS', 'Gene', '3265', (114, 118)) ('HRAS', 'Gene', '3265', (39, 43)) ('HRAS', 'Gene', (114, 118)) ('G13R', 'Mutation', 'rs104894228', (133, 137)) ('mutations', 'Var', (119, 128)) ('Q61K', 'Var', (142, 146)) ('G13R', 'Var', (133, 137)) ('HRAS', 'Gene', (39, 43)) 111693 30925729 MIBG positive patients with metastatic PCPG have been demonstrated to benefit from 131I-MIBG-based treatment, showing symptomatic and hormonal responses. ('131I-MIBG', 'Chemical', '-', (83, 92)) ('MIBG', 'Chemical', 'MESH:D019797', (0, 4)) ('benefit', 'PosReg', (70, 77)) ('metastatic PCPG', 'Disease', (28, 43)) ('rat', 'Species', '10116', (61, 64)) ('MIBG', 'Gene', (0, 4)) ('MIBG', 'Chemical', 'MESH:D019797', (88, 92)) ('131I-MIBG-based', 'Var', (83, 98)) ('patients', 'Species', '9606', (14, 22)) 111698 30925729 123I-Tyr-octreotide and 111In-pentetreotide were first introduced as the radiolabeled somatostatin agonists. ('111In-pentetreotide', 'Var', (24, 43)) ('123I-Tyr-octreotide', 'Chemical', '-', (0, 19)) ('123I-Tyr-octreotide', 'Var', (0, 19)) 111700 30925729 Besides, the 90Y is more effective on larger tumors due to higher energy beta emission, while the 177Lu is favorable for smaller tumors. ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('tumors', 'Disease', (129, 135)) ('tumors', 'Disease', 'MESH:D009369', (129, 135)) ('tumors', 'Phenotype', 'HP:0002664', (129, 135)) ('90Y', 'Var', (13, 16)) ('tumors', 'Disease', (45, 51)) ('tumors', 'Phenotype', 'HP:0002664', (45, 51)) ('tumors', 'Disease', 'MESH:D009369', (45, 51)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('higher', 'PosReg', (59, 65)) 111701 30925729 Less side effects were also found in 177Lu compared to 90Y, especially in the aspect of renal toxicity. ('renal toxicity', 'Disease', 'MESH:D007674', (88, 102)) ('renal toxicity', 'Disease', (88, 102)) ('177Lu', 'Var', (37, 42)) 111702 30925729 A successful phase III clinical trial NETTER-1 regarding the 177Lu-DOTATATE showed to prolong the median progression-free survival to 40 months in mid-gut neuroendocrine tumors, compared to a long-acting somatostatin analogue, octreotide-LAR (median progression-free survival: 8.4 months). ('prolong', 'PosReg', (86, 93)) ('tumor', 'Phenotype', 'HP:0002664', (170, 175)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (155, 176)) ('LAR', 'Gene', (238, 241)) ('177Lu-DOTATATE', 'Var', (61, 75)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (61, 75)) ('LAR', 'Gene', '5792', (238, 241)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (155, 176)) ('tumors', 'Phenotype', 'HP:0002664', (170, 176)) ('neuroendocrine tumors', 'Disease', (155, 176)) 111708 30925729 Antiangiogenic therapies have been proposed for targeting pseudohypoxic and angiogenic phenotypes in Cluster I PCPGs, which are commonly accompanied by mutations in SDH or VHL. ('SDH', 'Gene', '6390', (165, 168)) ('hypoxic', 'Disease', 'MESH:D000860', (64, 71)) ('mutations', 'Var', (152, 161)) ('SDH', 'Gene', (165, 168)) ('Cluster I PCPGs', 'Disease', (101, 116)) ('accompanied by', 'Reg', (137, 151)) ('VHL', 'Gene', (172, 175)) ('hypoxic', 'Disease', (64, 71)) 111710 30925729 These regimens are approved by the FDA for the treatment of patients with advanced renal cell carcinoma, which includes patients with mutations in SDHB. ('carcinoma', 'Phenotype', 'HP:0030731', (94, 103)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (83, 103)) ('patients', 'Species', '9606', (60, 68)) ('patients', 'Species', '9606', (120, 128)) ('SDHB', 'Gene', (147, 151)) ('mutations', 'Var', (134, 143)) ('renal cell carcinoma', 'Disease', (83, 103)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (83, 103)) 111720 30925729 Recently, PT2339 and PT2385, two selective HIF-2alpha antagonists, were developed and evaluated for their anti-tumor effects. ('PT2339', 'Var', (10, 16)) ('tumor', 'Disease', 'MESH:D009369', (111, 116)) ('PT2385', 'Gene', (21, 27)) ('tumor', 'Phenotype', 'HP:0002664', (111, 116)) ('HIF-2alpha', 'Gene', (43, 53)) ('tumor', 'Disease', (111, 116)) ('HIF-2alpha', 'Gene', '2034', (43, 53)) 111721 30925729 PT2399 showed a stronger suppression effect than that of sunitinib in cell lines derived from VHL-mutated clear cell renal cell carcinomas (ccRCCs). ('RCC', 'Disease', 'MESH:C538614', (142, 145)) ('clear cell renal cell carcinomas', 'Phenotype', 'HP:0006770', (106, 138)) ('RCC', 'Disease', (142, 145)) ('RCC', 'Phenotype', 'HP:0005584', (142, 145)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (117, 137)) ('carcinoma', 'Phenotype', 'HP:0030731', (128, 137)) ('clear cell renal cell carcinomas', 'Disease', 'MESH:C538614', (106, 138)) ('carcinomas', 'Phenotype', 'HP:0030731', (128, 138)) ('clear cell renal cell carcinomas', 'Disease', (106, 138)) ('ccRCCs', 'Phenotype', 'HP:0006770', (140, 146)) ('sunitinib', 'Chemical', 'MESH:D000077210', (57, 66)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (117, 138)) ('PT2399', 'Var', (0, 6)) ('VHL-mutated', 'Gene', (94, 105)) 111725 30925729 Recently, anthracyclines (daunorubicin, doxorubicin, epirubicin and idarubicin) have been reported to suppress cell growth of metastatic PCPGs by inhibiting both HIF-1 and 2alpha, indicating a new therapeutic option for patients with metastatic PCPGs, especially those with alterations in HIF pathways. ('doxorubicin', 'Chemical', 'MESH:D004317', (40, 51)) ('cell growth', 'CPA', (111, 122)) ('anthracyclines', 'Chemical', 'MESH:D018943', (10, 24)) ('epirubicin', 'Chemical', 'MESH:D015251', (53, 63)) ('metastatic PCPGs', 'CPA', (126, 142)) ('idarubicin', 'Var', (68, 78)) ('daunorubicin', 'Chemical', 'MESH:D003630', (26, 38)) ('patients', 'Species', '9606', (220, 228)) ('suppress', 'NegReg', (102, 110)) ('HIF-1 and 2alpha', 'Gene', '3091;2034', (162, 178)) ('inhibiting', 'NegReg', (146, 156)) ('rat', 'Species', '10116', (278, 281)) ('epirubicin', 'Var', (53, 63)) ('idarubicin', 'Chemical', 'MESH:D015255', (68, 78)) 111726 30925729 Hyperactivation of kinase activity is commonly detected in the Ras/Raf/Erk or PI3K/Akt/mTOR pathways of patients with Cluster II PCPGs and mutations in RET, NF1, TMEM127 and MAX,. ('Erk', 'Gene', '2048', (71, 74)) ('TMEM127', 'Gene', '55654', (162, 169)) ('RET', 'Gene', '5979', (152, 155)) ('Raf', 'Gene', '22882', (67, 70)) ('Cluster II PCPGs', 'Disease', (118, 134)) ('Erk', 'Gene', (71, 74)) ('NF1', 'Gene', (157, 160)) ('PCPGs', 'Disease', (129, 134)) ('RET', 'Gene', (152, 155)) ('mTOR', 'Gene', (87, 91)) ('Akt', 'Gene', (83, 86)) ('kinase activity', 'MPA', (19, 34)) ('Akt', 'Gene', '207', (83, 86)) ('patients', 'Species', '9606', (104, 112)) ('Raf', 'Gene', (67, 70)) ('mTOR', 'Gene', '2475', (87, 91)) ('TMEM127', 'Gene', (162, 169)) ('mutations', 'Var', (139, 148)) ('detected', 'Reg', (47, 55)) 111730 30925729 In 2013, a selective ATP-competitive dual mTORC1/2 small molecule inhibitor was evaluated in a mouse model of sporadic PHEO, and PHEO associated with VHL or SDHB mutations. ('associated', 'Reg', (134, 144)) ('mutations', 'Var', (162, 171)) ('ATP', 'Chemical', 'MESH:D000255', (21, 24)) ('mTORC1', 'Gene', '382056', (42, 48)) ('PHEO', 'Disease', (129, 133)) ('VHL', 'Gene', (150, 153)) ('mTORC1', 'Gene', (42, 48)) ('SDHB', 'Gene', (157, 161)) ('mouse', 'Species', '10090', (95, 100)) 111731 30925729 The results showed promising therapeutic effects of AZD8055, indicated by decreased tumor size and metastatic burden in athymic nude mice. ('nude mice', 'Species', '10090', (128, 137)) ('decreased tumor', 'Disease', 'MESH:D009369', (74, 89)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('metastatic burden', 'CPA', (99, 116)) ('AZD8055', 'Var', (52, 59)) ('AZD8055', 'Chemical', 'MESH:C546624', (52, 59)) ('decreased tumor', 'Disease', (74, 89)) 111732 30925729 Moreover, combining AZD8055 with an Erk inhibitor AEZS-131 may prevent the compensatory feedback loop and overcome resistance. ('resistance', 'MPA', (115, 125)) ('AZD8055', 'Var', (20, 27)) ('AZD8055', 'Chemical', 'MESH:C546624', (20, 27)) ('Erk', 'Gene', (36, 39)) ('AEZS-131', 'Chemical', '-', (50, 58)) ('prevent', 'NegReg', (63, 70)) ('compensatory feedback loop', 'MPA', (75, 101)) ('Erk', 'Gene', '2048', (36, 39)) ('overcome', 'PosReg', (106, 114)) 111733 30925729 Mutations in SDHx result in accumulation of succinate, an oncometabolite that inhibits 2-oxoglutarate (2-OG)-dependent dioxygenases, resulting in a global DNA and histone hypermethylation phenotype. ('inhibits', 'NegReg', (78, 86)) ('SDHx', 'Chemical', '-', (13, 17)) ('succinate', 'MPA', (44, 53)) ('SDHx', 'Gene', (13, 17)) ('global DNA', 'MPA', (148, 158)) ('accumulation', 'PosReg', (28, 40)) ('2-oxoglutarate', 'Chemical', 'MESH:D007656', (87, 101)) ('oxygen', 'Chemical', 'MESH:D010100', (121, 127)) ('Mutations', 'Var', (0, 9)) ('succinate', 'Chemical', 'MESH:D019802', (44, 53)) ('histone hypermethylation phenotype', 'MPA', (163, 197)) 111735 30925729 For example, DNA-demethylating agent decitabine suppresses cellular proliferation and metastasis in SDHB-knockout chromaffin cells. ('rat', 'Species', '10116', (75, 78)) ('decitabine', 'Chemical', 'MESH:D000077209', (37, 47)) ('suppresses', 'NegReg', (48, 58)) ('chromaffin', 'Chemical', '-', (114, 124)) ('SDHB-knockout', 'Var', (100, 113)) ('cellular proliferation', 'CPA', (59, 81)) ('metastasis', 'CPA', (86, 96)) ('SDHB-knockout', 'Gene', (100, 113)) 111740 30925729 However, tumors with mutations in genes encoding Krebs-cycle enzymes, such as IDH1/2 and SDHx, often show CpG island methylator phenotype (CIMP), which results in hypermethylation of the MGMT promoter and reduced expression of MGMT. ('MGMT', 'Gene', (227, 231)) ('show', 'Reg', (101, 105)) ('expression', 'MPA', (213, 223)) ('MGMT', 'Gene', (187, 191)) ('MGMT', 'Gene', '4255', (227, 231)) ('IDH1/2 and SDHx', 'Gene', '3417;3418', (78, 93)) ('MGMT', 'Gene', '4255', (187, 191)) ('tumor', 'Phenotype', 'HP:0002664', (9, 14)) ('reduced', 'NegReg', (205, 212)) ('tumors', 'Phenotype', 'HP:0002664', (9, 15)) ('Krebs', 'Chemical', '-', (49, 54)) ('tumors', 'Disease', (9, 15)) ('tumors', 'Disease', 'MESH:D009369', (9, 15)) ('hypermethylation', 'MPA', (163, 179)) ('mutations', 'Var', (21, 30)) 111743 30925729 Similarly, TMZ exerts strong therapeutic effect on metastatic neuroendocrine carcinoma, especially that with mutations in SDHB. ('neuroendocrine carcinoma', 'Disease', (62, 86)) ('neuroendocrine carcinoma', 'Phenotype', 'HP:0100634', (62, 86)) ('carcinoma', 'Phenotype', 'HP:0030731', (77, 86)) ('SDHB', 'Gene', (122, 126)) ('mutations', 'Var', (109, 118)) ('neuroendocrine carcinoma', 'Disease', 'MESH:D018278', (62, 86)) ('TMZ', 'Chemical', 'MESH:D000077204', (11, 14)) 111747 30925729 Mutations in enzymes encoding Krebs-cycle enzymes, such as SDHx, are associated with hereditary PCPGs that are characterized by increased level of succinate. ('hereditary PCPGs', 'Disease', (85, 101)) ('Krebs', 'Chemical', '-', (30, 35)) ('increased', 'PosReg', (128, 137)) ('associated', 'Reg', (69, 79)) ('SDHx', 'Gene', (59, 63)) ('Mutations', 'Var', (0, 9)) ('SDHx', 'Chemical', '-', (59, 63)) ('level of succinate', 'MPA', (138, 156)) ('succinate', 'Chemical', 'MESH:D019802', (147, 156)) 111752 30925729 Olaparib, an FDA-proved PARP inhibitor, markedly potentiates the therapeutic effect of TMZ in SDHB-mutant preclinical models; this occurs via induction of DNA lesions and inhibition of tumor growth in vitro and in vivo. ('tumor', 'Disease', (185, 190)) ('SDHB-mutant', 'Gene', (94, 105)) ('SDHB-mutant', 'Var', (94, 105)) ('TMZ', 'Chemical', 'MESH:D000077204', (87, 90)) ('PARP', 'Gene', (24, 28)) ('Olaparib', 'Chemical', 'MESH:C531550', (0, 8)) ('inhibition', 'NegReg', (171, 181)) ('therapeutic', 'MPA', (65, 76)) ('tumor', 'Disease', 'MESH:D009369', (185, 190)) ('DNA', 'MPA', (155, 158)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('PARP', 'Gene', '142', (24, 28)) ('potentiates', 'PosReg', (49, 60)) 111754 30925729 HDAC inhibitors have been shown to induce cell cycle arrest and apoptosis in PCPGs through activation of Notch1 signaling or inhibition of nuclear factor erythroid 2-related factor 2/heme oxygenase 1(Nrf2/HO-1) pathway. ('apoptosis', 'CPA', (64, 73)) ('activation', 'PosReg', (91, 101)) ('HO-1', 'CellLine', 'CVCL:1E42', (205, 209)) ('Nrf2', 'Gene', '4780', (200, 204)) ('induce', 'PosReg', (35, 41)) ('heme oxygenase 1', 'Gene', '3162', (183, 199)) ('Notch1', 'Gene', (105, 111)) ('arrest', 'Disease', (53, 59)) ('cell cycle arrest', 'Phenotype', 'HP:0011018', (42, 59)) ('nuclear factor erythroid 2-related factor 2', 'Gene', '4780', (139, 182)) ('inhibition', 'NegReg', (125, 135)) ('Notch1', 'Gene', '4851', (105, 111)) ('HDAC', 'Gene', '9734', (0, 4)) ('Nrf2', 'Gene', (200, 204)) ('HDAC', 'Gene', (0, 4)) ('arrest', 'Disease', 'MESH:D006323', (53, 59)) ('heme oxygenase 1', 'Gene', (183, 199)) ('inhibitors', 'Var', (5, 15)) ('nuclear factor erythroid 2-related factor 2', 'Gene', (139, 182)) 111758 30925729 Two phase II clinical trials of checkpoint inhibitors (Nivolumab, ipilimumab and pembrolizumab) are currently ongoing in patients with rare tumors, including metastasis PCPGs (NCT02834013, NCT02721732). ('NCT02834013', 'Var', (176, 187)) ('tumors', 'Phenotype', 'HP:0002664', (140, 146)) ('Nivolumab', 'Chemical', 'MESH:D000077594', (55, 64)) ('ipilimumab', 'Chemical', 'MESH:D000074324', (66, 76)) ('NCT02721732', 'Var', (189, 200)) ('rare tumors', 'Disease', 'MESH:D035583', (135, 146)) ('pembrolizumab', 'Chemical', 'MESH:C582435', (81, 94)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('rare tumors', 'Disease', (135, 146)) ('patients', 'Species', '9606', (121, 129)) 111761 30925729 Similarly, evidence has shown that the deficiency in SDH and accumulation of succinate may lead to elevated generation of ROS. ('deficiency', 'Var', (39, 49)) ('SDH', 'Gene', (53, 56)) ('ROS', 'Chemical', 'MESH:D017382', (122, 125)) ('succinate', 'MPA', (77, 86)) ('generation of ROS', 'MPA', (108, 125)) ('elevated', 'PosReg', (99, 107)) ('rat', 'Species', '10116', (112, 115)) ('succinate', 'Chemical', 'MESH:D019802', (77, 86)) ('SDH', 'Gene', '6390', (53, 56)) ('accumulation', 'PosReg', (61, 73)) 111771 30925729 PCPGs generate tumors with genetic alterations; therefore, detailed genetic analysis should be recommended for all patients with PCPGs to better characterize the potential therapeutic vulnerabilities in each case. ('tumors', 'Disease', (15, 21)) ('patients', 'Species', '9606', (115, 123)) ('tumors', 'Phenotype', 'HP:0002664', (15, 21)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('rat', 'Species', '10116', (39, 42)) ('rat', 'Species', '10116', (10, 13)) ('genetic alterations', 'Var', (27, 46)) ('tumors', 'Disease', 'MESH:D009369', (15, 21)) 111804 30755984 Pheochromocytoma is associated with germline mutations in the RET proto-oncogene, and the von Hippel-Lindau (VHL), neurofibromatosis-1 (NF1) and succinate dehydrogenase complex (SDH) genes. ('VHL', 'Disease', (109, 112)) ('Pheochromocytoma', 'Disease', (0, 16)) ('associated', 'Reg', (20, 30)) ('VHL', 'Disease', 'MESH:D006623', (109, 112)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (0, 16)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (115, 132)) ('SDH', 'Gene', (178, 181)) ('RET', 'Gene', (62, 65)) ('germline mutations', 'Var', (36, 54)) ('RET', 'Gene', '5979', (62, 65)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('neurofibromatosis-1', 'Gene', '4763', (115, 134)) ('von Hippel-Lindau', 'Gene', (90, 107)) ('NF1', 'Gene', (136, 139)) ('NF1', 'Gene', '4763', (136, 139)) ('neurofibromatosis-1', 'Gene', (115, 134)) ('von Hippel-Lindau', 'Gene', '7428', (90, 107)) 111825 30613466 Genetic screening is useful to identify carriers of the pathogenic mutations of PCC and PGL. ('PGL', 'Gene', (88, 91)) ('PCC', 'Gene', '1421', (80, 83)) ('PCC', 'Gene', (80, 83)) ('mutations', 'Var', (67, 76)) 111832 30613466 Mutations of the proto-oncogene RET, located at chromosome 10q11.2, are responsible for the pathogenesis, and nearly 90% of MEN 2 is caused by single point mutation. ('single point mutation', 'Var', (143, 164)) ('caused by', 'Reg', (133, 142)) ('RET', 'Gene', '5979', (32, 35)) ('Mutations', 'Var', (0, 9)) ('MEN', 'Species', '9606', (124, 127)) ('responsible', 'Reg', (72, 83)) ('RET', 'Gene', (32, 35)) 111834 30613466 There are 21 exons in the RET gene, and mutations in exons 10, 11, 13, 14, and 15 are responsible for the pathogenesis of MEN 2A. ('RET', 'Gene', (26, 29)) ('MEN 2A', 'Gene', '5979', (122, 128)) ('MEN 2A', 'Gene', (122, 128)) ('mutations', 'Var', (40, 49)) ('responsible', 'Reg', (86, 97)) ('RET', 'Gene', '5979', (26, 29)) 111837 30613466 However, PCC caused by the mutation of RET has a relative low risk of becoming a malignant tumor, and the characteristic clinical manifestation is pathogenesis in both adrenal glands, which easily relapse. ('RET', 'Gene', (39, 42)) ('malignant tumor', 'Disease', 'MESH:D018198', (81, 96)) ('PCC', 'Gene', '1421', (9, 12)) ('mutation', 'Var', (27, 35)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('caused by', 'Reg', (13, 22)) ('RET', 'Gene', '5979', (39, 42)) ('malignant tumor', 'Disease', (81, 96)) ('PCC', 'Gene', (9, 12)) 111841 30613466 MEN 1 is also an autosomal-dominant disease caused by inactivating mutation of MEN 1 tumor suppressor gene that is located on chromosome 11q13. ('autosomal-dominant disease', 'Disease', 'MESH:D030342', (17, 43)) ('tumor', 'Disease', (85, 90)) ('autosomal-dominant disease', 'Disease', (17, 43)) ('caused by', 'Reg', (44, 53)) ('tumor', 'Disease', 'MESH:D009369', (85, 90)) ('MEN 1', 'Gene', '4221', (0, 5)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('MEN 1', 'Gene', (0, 5)) ('inactivating mutation', 'Var', (54, 75)) ('MEN 1', 'Gene', (79, 84)) ('MEN 1', 'Gene', '4221', (79, 84)) 111850 30613466 VHL is an autosomal-dominant inheritance syndrome caused by the germline mutations of VHL tumor suppressor gene. ('caused by', 'Reg', (50, 59)) ('VHL tumor', 'Disease', 'MESH:D006623', (86, 95)) ('VHL', 'Disease', 'MESH:D006623', (0, 3)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('VHL', 'Disease', (86, 89)) ('VHL', 'Disease', (0, 3)) ('VHL', 'Disease', 'MESH:D006623', (86, 89)) ('germline mutations', 'Var', (64, 82)) ('VHL tumor', 'Disease', (86, 95)) 111862 30613466 NF-1 is also an autosomal-dominant disorder caused by mutation of the NF-1 gene that is located at chromosome 17q11.2, whose main function is to inhibit cell proliferation by converting RAS protein into its inactive form. ('NF-1', 'Gene', '4763', (0, 4)) ('mutation', 'Var', (54, 62)) ('NF-1', 'Gene', (0, 4)) ('autosomal-dominant disorder', 'Disease', 'MESH:D030342', (16, 43)) ('NF-1', 'Gene', '4763', (70, 74)) ('caused by', 'Reg', (44, 53)) ('autosomal-dominant disorder', 'Disease', (16, 43)) ('cell proliferation', 'CPA', (153, 171)) ('NF-1', 'Gene', (70, 74)) ('inhibit', 'NegReg', (145, 152)) ('RAS protein', 'Protein', (186, 197)) 111863 30613466 Mutation can cause tumors to grow out of control, most commonly on peripheral nerves. ('tumors', 'Disease', (19, 25)) ('tumors', 'Disease', 'MESH:D009369', (19, 25)) ('Mutation', 'Var', (0, 8)) ('tumor', 'Phenotype', 'HP:0002664', (19, 24)) ('tumors', 'Phenotype', 'HP:0002664', (19, 25)) ('grow', 'CPA', (29, 33)) 111869 30613466 Mutations in the succinate dehydrogenase (SDH, mitochondrial complex II) and its subunit genes (SDHA, SDHB, SDHC, SDHD, and SDHAF2) can lead to FPGLs. ('SDH', 'Gene', '6390', (96, 99)) ('SDH', 'Gene', '6390', (42, 45)) ('SDHD', 'Gene', '6392', (114, 118)) ('SDHA', 'Gene', (96, 100)) ('SDHB', 'Gene', '6390', (102, 106)) ('SDHC', 'Gene', (108, 112)) ('succinate dehydrogenase', 'Gene', '6389', (17, 40)) ('SDH', 'Gene', (114, 117)) ('SDHA', 'Gene', '6389', (96, 100)) ('SDHD', 'Gene', (114, 118)) ('succinate dehydrogenase', 'Gene', (17, 40)) ('SDH', 'Gene', (96, 99)) ('SDH', 'Gene', (42, 45)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (102, 106)) ('SDH', 'Gene', '6390', (102, 105)) ('SDH', 'Gene', '6390', (108, 111)) ('SDH', 'Gene', '6390', (124, 127)) ('lead to', 'Reg', (136, 143)) ('SDHA', 'Gene', (124, 128)) ('SDHC', 'Gene', '6391', (108, 112)) ('SDHA', 'Gene', '6389', (124, 128)) ('SDH', 'Gene', '6390', (114, 117)) ('SDH', 'Gene', (102, 105)) ('SDHAF2', 'Gene', (124, 130)) ('FPGLs', 'Disease', (144, 149)) ('SDHAF2', 'Gene', '54949', (124, 130)) ('SDH', 'Gene', (124, 127)) ('SDH', 'Gene', (108, 111)) ('PGLs', 'Phenotype', 'HP:0002668', (145, 149)) 111871 30613466 It is worth noting that mutation in SDHB is possibly related to malignancy and poor prognosis. ('malignancy', 'Disease', (64, 74)) ('related', 'Reg', (53, 60)) ('SDHB', 'Gene', '6390', (36, 40)) ('SDHB', 'Gene', (36, 40)) ('mutation', 'Var', (24, 32)) ('malignancy', 'Disease', 'MESH:D009369', (64, 74)) 111872 30613466 Mutations in SDHD and SDHAF2 are frequently found in head and neck PGLs in the paternal branch. ('PGLs', 'Phenotype', 'HP:0002668', (67, 71)) ('found', 'Reg', (44, 49)) ('SDHD', 'Gene', (13, 17)) ('SDHD', 'Gene', '6392', (13, 17)) ('Mutations', 'Var', (0, 9)) ('SDHAF2', 'Gene', (22, 28)) ('SDHAF2', 'Gene', '54949', (22, 28)) 111874 30613466 Mutations in SDHD are responsible for FPGL-1, which are inherited in an autosomal-dominant fashion with a parent of origin effect. ('FPGL-1', 'Disease', (38, 44)) ('responsible', 'Reg', (22, 33)) ('SDHD', 'Gene', (13, 17)) ('SDHD', 'Gene', '6392', (13, 17)) ('Mutations', 'Var', (0, 9)) 111878 30613466 The germline loss-of-function mutations in the SDHAF2 (SDH5) gene, which is located on chromosome 11q13.1, lead to FPGL-2. ('SDH5', 'Gene', '54949', (55, 59)) ('loss-of-function', 'NegReg', (13, 29)) ('FPGL-2', 'Disease', (115, 121)) ('mutations', 'Var', (30, 39)) ('SDH5', 'Gene', (55, 59)) ('SDHAF2', 'Gene', '54949', (47, 53)) ('SDHAF2', 'Gene', (47, 53)) 111884 30613466 Tumors with SDHC mutations do not tend to be malignant or multifocal. ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('SDHC', 'Gene', (12, 16)) ('mutations', 'Var', (17, 26)) ('SDHC', 'Gene', '6391', (12, 16)) 111886 30613466 FPGL-4 is caused by inactivating mutations in the tumor suppressor gene SDHB, located on chromosome 1p35-36, with an autosomal-dominant inheritance endowing the tumor susceptibility. ('SDHB', 'Gene', (72, 76)) ('FPGL-4', 'Disease', (0, 6)) ('tumor', 'Disease', 'MESH:D009369', (161, 166)) ('tumor', 'Disease', 'MESH:D009369', (50, 55)) ('caused by', 'Reg', (10, 19)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('tumor', 'Phenotype', 'HP:0002664', (161, 166)) ('tumor', 'Disease', (161, 166)) ('tumor', 'Disease', (50, 55)) ('inactivating mutations', 'Var', (20, 42)) ('SDHB', 'Gene', '6390', (72, 76)) 111888 30613466 The SDHA gene mutations that map to chromosome 5p15 can result in FPGL-5. ('SDHA', 'Gene', (4, 8)) ('SDHA', 'Gene', '6389', (4, 8)) ('FPGL-5', 'Disease', (66, 72)) ('mutations', 'Var', (14, 23)) ('result in', 'Reg', (56, 65)) 111889 30613466 Biallelic mutations in SDHA are associated with Leigh's syndrome. ('Biallelic mutations', 'Var', (0, 19)) ("Leigh's syndrome", 'Disease', (48, 64)) ('SDHA', 'Gene', '6389', (23, 27)) ("Leigh's syndrome", 'Disease', 'MESH:D007888', (48, 64)) ('associated', 'Reg', (32, 42)) ('SDHA', 'Gene', (23, 27)) 111891 30613466 Apart from the typical mutations mentioned above, mutations in TMEM127 (locus of 2q11.2), MAX (14q23.3), FH (11q42.1), SPAS1/HIF2A (2P21), EGN1 (1q42.1), and KIF1beta (1p36.22) have also been proved to be associated with PCC/PGL development . ('HIF2A', 'Gene', (125, 130)) ('TMEM127', 'Gene', (63, 70)) ('SPAS1', 'Gene', '219938', (119, 124)) ('TMEM127', 'Gene', '55654', (63, 70)) ('mutations', 'Var', (50, 59)) ('KIF1beta', 'Gene', '23095', (158, 166)) ('PCC', 'Gene', '1421', (221, 224)) ('SPAS1', 'Gene', (119, 124)) ('HIF2A', 'Gene', '2034', (125, 130)) ('associated', 'Reg', (205, 215)) ('PCC', 'Gene', (221, 224)) ('KIF1beta', 'Gene', (158, 166)) 111892 30613466 As PCC/PGL accounts for the highest proportion of hereditary-related tumors, it is recommended that all patients with PCC/PGL should be tested for genetic mutations for the following reasons: (i) up to 40% patients carry disease-causing germline mutations; (ii) even for sporadic patients, the overall frequency of germline mutation is higher than 10%; (iii) specific genetic mutations are related to malignant PCC/PGL; (iv) positive genetic test may lead to an accurate pre-surgery diagnosis; (v) germline mutation in genes may cause other syndromic morbidity; and (vi) positive genetic mutation of the proband may result in an earlier diagnosis of their relatives. ('result in', 'Reg', (616, 625)) ('PCC', 'Gene', '1421', (411, 414)) ('PCC', 'Gene', (3, 6)) ('PCC', 'Gene', '1421', (3, 6)) ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('tumors', 'Phenotype', 'HP:0002664', (69, 75)) ('cause', 'Reg', (529, 534)) ('syndromic morbidity', 'Disease', 'MESH:D009767', (541, 560)) ('malignant PCC', 'Disease', 'OMIM:115700', (401, 414)) ('patients', 'Species', '9606', (280, 288)) ('tumors', 'Disease', (69, 75)) ('germline mutation in', 'Var', (498, 518)) ('syndromic morbidity', 'Disease', (541, 560)) ('patients', 'Species', '9606', (104, 112)) ('PCC', 'Gene', (118, 121)) ('positive genetic mutation', 'Var', (571, 596)) ('PCC', 'Gene', '1421', (118, 121)) ('PCC', 'Gene', (411, 414)) ('patients', 'Species', '9606', (206, 214)) ('tumors', 'Disease', 'MESH:D009369', (69, 75)) ('malignant PCC', 'Disease', (401, 414)) 111896 30613466 With sufficient read depth and fast sequencing time, it has been successfully used to detect chromosomal aberrations in circulating cancer cells. ('cancer', 'Disease', 'MESH:D009369', (132, 138)) ('cancer', 'Disease', (132, 138)) ('cancer', 'Phenotype', 'HP:0002664', (132, 138)) ('chromosomal aberrations', 'Var', (93, 116)) ('chromosomal aberrations', 'Phenotype', 'HP:0040012', (93, 116)) 111900 30613466 Due to the fact that about 85% of disease-causing mutations are expected to occur within the exome, WES has gained popularity in analysis of PCC/PGL. ('mutations', 'Var', (50, 59)) ('PCC', 'Gene', (141, 144)) ('PCC', 'Gene', '1421', (141, 144)) 111904 30613466 The first one, the basic panel, includes the PCC/PGL genes mutated at the germline level and is associated with familial disease. ('PCC', 'Gene', '1421', (45, 48)) ('associated with', 'Reg', (96, 111)) ('PCC', 'Gene', (45, 48)) ('familial disease', 'Disease', (112, 128)) ('familial disease', 'Disease', 'MESH:D030342', (112, 128)) ('mutated', 'Var', (59, 66)) 111910 30613466 Probands or their relatives presented with other syndromic morbidity (Table 1) may be directed for targeted germline mutation testing. ('germline mutation testing', 'Var', (108, 133)) ('syndromic morbidity', 'Disease', (49, 68)) ('syndromic morbidity', 'Disease', 'MESH:D009767', (49, 68)) 111912 30613466 For such patients, genetic screening of VHL and RET should be the priority as about 50% of these patients present with VHL/RET mutations. ('VHL', 'Disease', 'MESH:D006623', (119, 122)) ('patients', 'Species', '9606', (9, 17)) ('VHL', 'Disease', (119, 122)) ('RET', 'Gene', '5979', (48, 51)) ('RET', 'Gene', (123, 126)) ('RET', 'Gene', '5979', (123, 126)) ('RET', 'Gene', (48, 51)) ('mutations', 'Var', (127, 136)) ('VHL', 'Disease', (40, 43)) ('VHL', 'Disease', 'MESH:D006623', (40, 43)) ('patients', 'Species', '9606', (97, 105)) 111913 30613466 In addition, in bilateral PCC, TMEM127 is mutated in 39.1% of patients and MAX is mutated in 66.7% of patients. ('PCC', 'Gene', (26, 29)) ('mutated', 'Var', (42, 49)) ('patients', 'Species', '9606', (102, 110)) ('PCC', 'Gene', '1421', (26, 29)) ('TMEM127', 'Gene', (31, 38)) ('patients', 'Species', '9606', (62, 70)) ('TMEM127', 'Gene', '55654', (31, 38)) 111915 30613466 Germline mutation of KIF1Bbeta has also been reported to cause bilateral PCC, but it is not recommended for routine test as only a few patients with KIF1Bbeta mutation have been reported. ('patients', 'Species', '9606', (135, 143)) ('cause', 'Reg', (57, 62)) ('PCC', 'Gene', '1421', (73, 76)) ('KIF1Bbeta', 'Gene', (21, 30)) ('PCC', 'Gene', (73, 76)) ('Germline mutation', 'Var', (0, 17)) 111916 30613466 Although 14.1% of patients with NF1 germline mutation suffer bilateral PCC, the diagnosis of NF1 can be invariably established by clinical findings alone. ('NF1', 'Gene', '4763', (93, 96)) ('NF1', 'Gene', (32, 35)) ('suffer', 'Reg', (54, 60)) ('germline mutation', 'Var', (36, 53)) ('NF1', 'Gene', '4763', (32, 35)) ('PCC', 'Gene', '1421', (71, 74)) ('patients', 'Species', '9606', (18, 26)) ('PCC', 'Gene', (71, 74)) ('NF1', 'Gene', (93, 96)) 111922 30613466 For patients with metastatic disease, SDHB should be tested first as more than 40% of this mutation is related to metastatic PCC/PGL and 5.5% of PCC/PGL patients carried SDHB germline mutation. ('SDHB', 'Gene', '6390', (170, 174)) ('mutation', 'Var', (91, 99)) ('patients', 'Species', '9606', (153, 161)) ('PCC', 'Gene', '1421', (145, 148)) ('SDHB', 'Gene', (170, 174)) ('PCC', 'Gene', '1421', (125, 128)) ('PCC', 'Gene', (145, 148)) ('patients', 'Species', '9606', (4, 12)) ('SDHB', 'Gene', '6390', (38, 42)) ('PCC', 'Gene', (125, 128)) ('SDHB', 'Gene', (38, 42)) ('related', 'Reg', (103, 110)) 111924 30613466 Although germline mutation in FH, KMT2D, and MEN1 had been reported to cause metastatic PCC/PGL, the proportion of PCC/PGL patients with these mutations is very low. ('MEN1', 'Gene', (45, 49)) ('MEN1', 'Gene', '4221', (45, 49)) ('PCC', 'Gene', (88, 91)) ('cause', 'Reg', (71, 76)) ('patients', 'Species', '9606', (123, 131)) ('PCC', 'Gene', '1421', (115, 118)) ('PCC', 'Gene', '1421', (88, 91)) ('KMT2D', 'Gene', (34, 39)) ('KMT2D', 'Gene', '8085', (34, 39)) ('PCC', 'Gene', (115, 118)) ('germline mutation', 'Var', (9, 26)) 111925 30613466 Although the diagnosis of NF1 can be established by clinical findings, it is reported that 9.3% of patients with PCC/PGL caused by NF1 germline mutation suffer metastatic disease. ('suffer', 'Reg', (153, 159)) ('caused by', 'Reg', (121, 130)) ('metastatic disease', 'CPA', (160, 178)) ('NF1', 'Gene', (131, 134)) ('PCC', 'Gene', (113, 116)) ('NF1', 'Gene', '4763', (131, 134)) ('NF1', 'Gene', (26, 29)) ('patients', 'Species', '9606', (99, 107)) ('NF1', 'Gene', '4763', (26, 29)) ('PCC', 'Gene', '1421', (113, 116)) ('germline', 'Var', (135, 143)) 111928 30613466 Tumors that originate from the adrenal medulla are defined as PCCs, which are thought to be caused by the mutation of RET, VHL, MAX, NF1, and TMEM127; while tumors located in extra-adrenal positions are called paragangliomas, which were more likely to be caused by the mutation of SDHx, MDH2, and HIF2A. ('VHL', 'Disease', (123, 126)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('NF1', 'Gene', '4763', (133, 136)) ('tumor', 'Phenotype', 'HP:0002664', (157, 162)) ('MDH2', 'Gene', '4191', (287, 291)) ('HIF2A', 'Gene', '2034', (297, 302)) ('TMEM127', 'Gene', (142, 149)) ('tumors', 'Phenotype', 'HP:0002664', (157, 163)) ('RET', 'Gene', '5979', (118, 121)) ('HIF2A', 'Gene', (297, 302)) ('paragangliomas', 'Disease', (210, 224)) ('SDHx', 'Gene', (281, 285)) ('mutation', 'Var', (106, 114)) ('NF1', 'Gene', (133, 136)) ('Tumors', 'Disease', (0, 6)) ('caused by', 'Reg', (255, 264)) ('VHL', 'Disease', 'MESH:D006623', (123, 126)) ('glioma', 'Phenotype', 'HP:0009733', (217, 223)) ('SDHx', 'Chemical', '-', (281, 285)) ('tumors', 'Disease', (157, 163)) ('TMEM127', 'Gene', '55654', (142, 149)) ('PCC', 'Gene', (62, 65)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('PCCs', 'Phenotype', 'HP:0002666', (62, 66)) ('gliomas', 'Phenotype', 'HP:0009733', (217, 224)) ('PCC', 'Gene', '1421', (62, 65)) ('MDH2', 'Gene', (287, 291)) ('RET', 'Gene', (118, 121)) ('caused by', 'Reg', (92, 101)) ('tumors', 'Disease', 'MESH:D009369', (157, 163)) ('paragangliomas', 'Disease', 'MESH:D010235', (210, 224)) ('paraganglioma', 'Phenotype', 'HP:0002668', (210, 223)) ('paragangliomas', 'Phenotype', 'HP:0002668', (210, 224)) ('mutation', 'Var', (269, 277)) 111930 30613466 PCC and PGL are neuroendocrine tumors known to generally produce and secrete catecholamines and their metabolites which can be divided into three major phenotypes determined by the underlying molecular pathways of the tumor: (i) noradrenergic phenotype characterized by a (pseudo) hypoxic signature caused by mutations of VHL, SDHx, FH, MDH, and EPAS1; (ii) adrenergic phenotype characterized by activation of kinase signaling pathways caused by mutations of RET, NF1, TMEM127, and MAX; and (iii) dopaminergic phenotype, which is usually seen in patients with metastatic disease caused by SDHB and SDHD mutations. ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (16, 37)) ('SDHD', 'Gene', (598, 602)) ('kinase signaling pathways', 'Pathway', (410, 435)) ('VHL', 'Disease', (322, 325)) ('SDHB', 'Gene', (589, 593)) ('catecholamines', 'Chemical', 'MESH:D002395', (77, 91)) ('tumors', 'Phenotype', 'HP:0002664', (31, 37)) ('EPAS1', 'Gene', (346, 351)) ('TMEM127', 'Gene', (469, 476)) ('tumor', 'Disease', (218, 223)) ('mutations', 'Var', (309, 318)) ('patients', 'Species', '9606', (546, 554)) ('tumor', 'Phenotype', 'HP:0002664', (31, 36)) ('neuroendocrine tumors', 'Disease', (16, 37)) ('tumor', 'Disease', 'MESH:D009369', (218, 223)) ('mutations', 'Var', (603, 612)) ('TMEM127', 'Gene', '55654', (469, 476)) ('RET', 'Gene', '5979', (459, 462)) ('NF1', 'Gene', '4763', (464, 467)) ('dopaminergic', 'MPA', (497, 509)) ('MDH', 'Gene', (337, 340)) ('caused', 'Reg', (579, 585)) ('SDHx', 'Gene', (327, 331)) ('VHL', 'Disease', 'MESH:D006623', (322, 325)) ('EPAS1', 'Gene', '2034', (346, 351)) ('PCC', 'Gene', (0, 3)) ('tumor', 'Phenotype', 'HP:0002664', (218, 223)) ('NF1', 'Gene', (464, 467)) ('SDHx', 'Chemical', '-', (327, 331)) ('neuroendocrine tumors', 'Disease', 'MESH:D018358', (16, 37)) ('PCC', 'Gene', '1421', (0, 3)) ('RET', 'Gene', (459, 462)) ('SDHB', 'Gene', '6390', (589, 593)) ('SDHD', 'Gene', '6392', (598, 602)) ('activation', 'PosReg', (396, 406)) ('tumor', 'Disease', (31, 36)) ('mutations', 'Var', (446, 455)) ('metastatic disease', 'Disease', (560, 578)) ('tumor', 'Disease', 'MESH:D009369', (31, 36)) 111932 30613466 SDHB immunohistochemistry is negative in tumors mutated on all SDHx genes. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('mutated', 'Var', (48, 55)) ('tumors', 'Phenotype', 'HP:0002664', (41, 47)) ('tumors', 'Disease', (41, 47)) ('tumors', 'Disease', 'MESH:D009369', (41, 47)) ('SDHx', 'Gene', (63, 67)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHx', 'Chemical', '-', (63, 67)) ('SDHB', 'Gene', (0, 4)) 111934 30613466 showed that immunohistochemistry for SDHB was a reliable surrogate marker of SDHx mutation despite that the SDHB-immunonegative subset of VHL- and NF1-mutated paraganglionic tumors may influence the specificity. ('SDHB', 'Gene', (108, 112)) ('paraganglionic tumors', 'Phenotype', 'HP:0002668', (159, 180)) ('tumors', 'Disease', (174, 180)) ('tumors', 'Disease', 'MESH:D009369', (174, 180)) ('mutation', 'Var', (82, 90)) ('SDHB', 'Gene', '6390', (37, 41)) ('SDHx', 'Chemical', '-', (77, 81)) ('SDHx', 'Gene', (77, 81)) ('influence', 'Reg', (185, 194)) ('VHL', 'Disease', (138, 141)) ('tumor', 'Phenotype', 'HP:0002664', (174, 179)) ('SDHB', 'Gene', (37, 41)) ('VHL', 'Disease', 'MESH:D006623', (138, 141)) ('NF1', 'Gene', (147, 150)) ('SDHB', 'Gene', '6390', (108, 112)) ('NF1', 'Gene', '4763', (147, 150)) ('tumors', 'Phenotype', 'HP:0002664', (174, 180)) 111936 30613466 It is also reported that SDHA is negative only in SDHA-mutated tumors, and negative SDHB and SDHA immunohistochemistry on paraffin-embedded tumors can be associated with the presence of SDHA mutation. ('SDHA', 'Gene', '6389', (186, 190)) ('SDHA', 'Gene', (25, 29)) ('SDHA', 'Gene', '6389', (50, 54)) ('tumors', 'Phenotype', 'HP:0002664', (63, 69)) ('SDHA', 'Gene', '6389', (25, 29)) ('tumors', 'Phenotype', 'HP:0002664', (140, 146)) ('SDHB', 'Gene', '6390', (84, 88)) ('tumors', 'Disease', (63, 69)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('mutation', 'Var', (191, 199)) ('SDHA-', 'Gene', '6389', (50, 55)) ('negative', 'NegReg', (75, 83)) ('paraffin', 'Chemical', 'MESH:D010232', (122, 130)) ('tumors', 'Disease', (140, 146)) ('SDHA', 'Gene', (93, 97)) ('SDHB', 'Gene', (84, 88)) ('tumors', 'Disease', 'MESH:D009369', (63, 69)) ('SDHA-', 'Gene', (50, 55)) ('tumors', 'Disease', 'MESH:D009369', (140, 146)) ('SDHA', 'Gene', '6389', (93, 97)) ('SDHA', 'Gene', (186, 190)) ('SDHA', 'Gene', (50, 54)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) 111937 30613466 Generally, SDHD immunohistochemistry is positive in tumors mutated on SDHx genes. ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('tumors', 'Phenotype', 'HP:0002664', (52, 58)) ('tumors', 'Disease', (52, 58)) ('tumors', 'Disease', 'MESH:D009369', (52, 58)) ('SDHx', 'Chemical', '-', (70, 74)) ('SDHD', 'Gene', '6392', (11, 15)) ('SDHx', 'Gene', (70, 74)) ('mutated', 'Var', (59, 66)) ('SDHD', 'Gene', (11, 15)) 111939 30613466 So, the addition of SDHD immunohistochemistry will be very useful to predict SDHx gene variants in PGL/PCC. ('PCC', 'Gene', '1421', (103, 106)) ('SDHx', 'Chemical', '-', (77, 81)) ('PCC', 'Gene', (103, 106)) ('SDHx', 'Gene', (77, 81)) ('variants', 'Var', (87, 95)) ('SDHD', 'Gene', '6392', (20, 24)) ('SDHD', 'Gene', (20, 24)) 111947 29789510 Functioning Mediastinal Paraganglioma Associated with a Germline Mutation of von Hippel-Lindau Gene We report the case of a 21-year old woman presenting with high blood pressure and raised normetanephrine levels. ('Associated', 'Reg', (38, 48)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (24, 37)) ('Mediastinal Paraganglioma', 'Disease', (12, 37)) ('woman', 'Species', '9606', (136, 141)) ('von Hippel-Lindau', 'Gene', '7428', (77, 94)) ('high blood pressure', 'MPA', (158, 177)) ('Germline Mutation', 'Var', (56, 73)) ('normetanephrine', 'Chemical', 'MESH:D009647', (189, 204)) ('normetanephrine levels', 'MPA', (189, 211)) ('Mediastinal Paraganglioma', 'Disease', 'MESH:D008480', (12, 37)) ('raised', 'PosReg', (182, 188)) ('von Hippel-Lindau', 'Gene', (77, 94)) ('high blood pressure', 'Phenotype', 'HP:0000822', (158, 177)) 111951 29789510 Mutations in SDHA, SDHB, SDHC, SDHD, RET, SDHAF2, TMEM127, MAX, NF1, FH, MDH2, and EPAS1 were absent, but a heterozygous missense mutation, c.311G > T, was found in exon 1 of the von Hippel-Lindau gene, VHL, resulting in a glycine to valine substitution in the VHL protein at position 104, p.Gly104Val. ('SDHAF2', 'Gene', (42, 48)) ('MAX', 'Gene', (59, 62)) ('RET', 'Gene', (37, 40)) ('SDHAF2', 'Gene', '54949', (42, 48)) ('SDHA', 'Gene', (42, 46)) ('MDH2', 'Gene', '4191', (73, 77)) ('SDHC', 'Gene', '6391', (25, 29)) ('NF1', 'Gene', (64, 67)) ('TMEM127', 'Gene', '55654', (50, 57)) ('c.311G > T', 'Mutation', 'rs869025630', (140, 150)) ('EPAS1', 'Gene', (83, 88)) ('SDHA', 'Gene', '6389', (42, 46)) ('VHL', 'Gene', '7428', (261, 264)) ('glycine', 'MPA', (223, 230)) ('c.311G > T', 'Var', (140, 150)) ('p.Gly104Val', 'Mutation', 'rs869025630', (290, 301)) ('von Hippel-Lindau', 'Gene', (179, 196)) ('FH', 'Gene', '2271', (69, 71)) ('p.Gly104Val', 'Var', (290, 301)) ('VHL', 'Gene', (203, 206)) ('SDHD', 'Gene', '6392', (31, 35)) ('SDHA', 'Gene', (13, 17)) ('SDHB', 'Gene', '6390', (19, 23)) ('SDHC', 'Gene', (25, 29)) ('MAX', 'Gene', '4149', (59, 62)) ('glycine', 'Chemical', 'MESH:D005998', (223, 230)) ('MDH2', 'Gene', (73, 77)) ('EPAS1', 'Gene', '2034', (83, 88)) ('von Hippel-Lindau', 'Gene', '7428', (179, 196)) ('SDHA', 'Gene', '6389', (13, 17)) ('RET', 'Gene', '5979', (37, 40)) ('valine', 'Chemical', 'MESH:D014633', (234, 240)) ('VHL', 'Gene', '7428', (203, 206)) ('SDHD', 'Gene', (31, 35)) ('in a', 'Reg', (218, 222)) ('SDHB', 'Gene', (19, 23)) ('TMEM127', 'Gene', (50, 57)) ('NF1', 'Gene', '4763', (64, 67)) ('VHL', 'Gene', (261, 264)) 111953 29789510 We diagnose an unusual functional mediastinal paraganglioma in this young patient with a germline VHL gene mutation, a mutation previously described as inducing polycythemia and/or pheochromocytoma but not paraganglioma or retinal hemangioblastoma. ('patient', 'Species', '9606', (74, 81)) ('paraganglioma', 'Disease', 'MESH:D010235', (206, 219)) ('polycythemia', 'Phenotype', 'HP:0001901', (161, 173)) ('retinal hemangioblastoma', 'Disease', 'MESH:D018325', (223, 247)) ('inducing', 'Reg', (152, 160)) ('paraganglioma', 'Phenotype', 'HP:0002668', (46, 59)) ('pheochromocytoma', 'Disease', (181, 197)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (181, 197)) ('mutation', 'Var', (107, 115)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (231, 247)) ('retinal hemangioblastoma', 'Disease', (223, 247)) ('retinal hemangioblastoma', 'Phenotype', 'HP:0009711', (223, 247)) ('paraganglioma', 'Phenotype', 'HP:0002668', (206, 219)) ('polycythemia', 'Disease', (161, 173)) ('VHL', 'Gene', (98, 101)) ('polycythemia', 'Disease', 'MESH:D011086', (161, 173)) ('paraganglioma', 'Disease', (46, 59)) ('paraganglioma', 'Disease', 'MESH:D010235', (46, 59)) ('VHL', 'Gene', '7428', (98, 101)) ('paraganglioma', 'Disease', (206, 219)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (181, 197)) 111965 29789510 While screening for mutations in SDHA, SDHB, SDHC, SDHD, RET, SDHAF2, TMEM127, MAX, NF1, FH, MDH2, and EPAS1 genes was negative, a heterozygous missense variation in exon 1 of the von Hippel-Lindau (VHL) disease gene was found. ('SDHB', 'Gene', '6390', (39, 43)) ('SDHC', 'Gene', (45, 49)) ('MAX', 'Gene', '4149', (79, 82)) ('EPAS1', 'Gene', '2034', (103, 108)) ('MDH2', 'Gene', (93, 97)) ('RET', 'Gene', '5979', (57, 60)) ('SDHA', 'Gene', (33, 37)) ('TMEM127', 'Gene', (70, 77)) ('SDHA', 'Gene', '6389', (33, 37)) ('NF1', 'Gene', '4763', (84, 87)) ('SDHB', 'Gene', (39, 43)) ('TMEM127', 'Gene', '55654', (70, 77)) ('SDHAF2', 'Gene', (62, 68)) ('MAX', 'Gene', (79, 82)) ('SDHAF2', 'Gene', '54949', (62, 68)) ('SDHA', 'Gene', (62, 66)) ('NF1', 'Gene', (84, 87)) ('RET', 'Gene', (57, 60)) ('missense variation', 'Var', (144, 162)) ('SDHC', 'Gene', '6391', (45, 49)) ('MDH2', 'Gene', '4191', (93, 97)) ('SDHD', 'Gene', '6392', (51, 55)) ('von Hippel-Lindau (VHL) disease', 'Disease', 'MESH:D006623', (180, 211)) ('EPAS1', 'Gene', (103, 108)) ('FH', 'Gene', '2271', (89, 91)) ('SDHA', 'Gene', '6389', (62, 66)) ('mutations', 'Var', (20, 29)) ('SDHD', 'Gene', (51, 55)) 111966 29789510 This c.311G > T mutation gives rise to an amino acid substitution of valine by glycine at position 104 in the VHL protein, p.Gly104Val. ('VHL', 'Gene', '7428', (110, 113)) ('c.311G > T', 'Var', (5, 15)) ('p.Gly104Val', 'Mutation', 'rs869025630', (123, 134)) ('valine by glycine at position 104', 'Mutation', 'rs869025630', (69, 102)) ('c.311G > T', 'Mutation', 'rs869025630', (5, 15)) ('p.Gly104Val', 'Var', (123, 134)) ('VHL', 'Gene', (110, 113)) ('valine', 'MPA', (69, 75)) 111967 29789510 Large VHL deletions were also excluded by MLPA. ('VHL', 'Gene', '7428', (6, 9)) ('VHL', 'Gene', (6, 9)) ('deletions', 'Var', (10, 19)) 111980 29789510 In this case, the noradrenergic PGL profile clearly indicated a higher likelihood of VHL or SDH mutations. ('SDH', 'Gene', (92, 95)) ('VHL', 'Gene', (85, 88)) ('VHL', 'Gene', '7428', (85, 88)) ('SDH', 'Gene', '6390', (92, 95)) ('PGL', 'Phenotype', 'HP:0002668', (32, 35)) ('mutations', 'Var', (96, 105)) 111984 29789510 In this family, the missense mutation on exon 1 of VHL resulted in a p.Gly104Val substitution which has not been described so far in the literature as being causative of PGL or hemangioblastoma. ('PGL', 'Phenotype', 'HP:0002668', (170, 173)) ('VHL', 'Gene', '7428', (51, 54)) ('p.Gly104Val', 'Var', (69, 80)) ('PGL', 'Disease', (170, 173)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (177, 193)) ('hemangioblastoma', 'Disease', (177, 193)) ('missense mutation on', 'Var', (20, 40)) ('p.Gly104Val', 'Mutation', 'rs869025630', (69, 80)) ('resulted in', 'Reg', (55, 66)) ('VHL', 'Gene', (51, 54)) ('hemangioblastoma', 'Disease', 'MESH:D018325', (177, 193)) 111986 29789510 The heterogeneous phenotype observed with this heterozygous missense mutation (c.311G > T) in the two sisters could be due to the additive effect of a second, unknown, pathogenic germline mutation elsewhere on the genome inducing a severe pVHL loss-of-function. ('VHL loss', 'Disease', 'MESH:D006623', (240, 248)) ('VHL loss', 'Disease', (240, 248)) ('c.311G > T', 'Var', (79, 89)) ('pVHL', 'Gene', (239, 243)) ('pVHL', 'Gene', '7428', (239, 243)) ('c.311G > T', 'Mutation', 'rs869025630', (79, 89)) 111987 29789510 A phenotype such as the one in our family could possibly result from a haplotype transmission of a mutation elsewhere impairing the interaction of pVHL on HIF1alpha leading to a reduced degradation of pHIF1. ('pVHL', 'Gene', (147, 151)) ('degradation', 'MPA', (186, 197)) ('impairing', 'NegReg', (118, 127)) ('mutation', 'Var', (99, 107)) ('interaction', 'Interaction', (132, 143)) ('HIF1alpha', 'Gene', (155, 164)) ('pHIF1', 'Gene', (201, 206)) ('reduced', 'NegReg', (178, 185)) ('HIF1alpha', 'Gene', '3091', (155, 164)) ('pVHL', 'Gene', '7428', (147, 151)) 111988 29789510 In this latter study, different VHL mutations led to gradual loss-of-function of the gene which might explain the existence of different phenotypes. ('VHL', 'Gene', '7428', (32, 35)) ('VHL', 'Gene', (32, 35)) ('loss-of-function', 'NegReg', (61, 77)) ('mutations', 'Var', (36, 45)) 111990 29789510 Follow-up must be continued for her lifetime because of the potential risk of developing a RCC or PHEO from this VHL mutation. ('VHL', 'Gene', (113, 116)) ('RCC', 'Disease', 'MESH:C538614', (91, 94)) ('RCC', 'Disease', (91, 94)) ('VHL', 'Gene', '7428', (113, 116)) ('RCC', 'Phenotype', 'HP:0005584', (91, 94)) ('PHEO', 'Disease', (98, 102)) ('mutation', 'Var', (117, 125)) 111992 29789510 In conclusion, we report the first diagnosis of a functional mediastinal paraganglioma in a young patient with a missense mutation in exon 1 of the VHL gene. ('VHL', 'Gene', (148, 151)) ('patient', 'Species', '9606', (98, 105)) ('VHL', 'Gene', '7428', (148, 151)) ('paraganglioma', 'Disease', 'MESH:D010235', (73, 86)) ('paraganglioma', 'Phenotype', 'HP:0002668', (73, 86)) ('paraganglioma', 'Disease', (73, 86)) ('missense mutation in', 'Var', (113, 133)) 111993 29789510 Until now, this mutation has been described in the literature with cases of polycythemia and/or PHEO but not paraganglioma or retinal hemangioblastoma. ('mutation', 'Var', (16, 24)) ('retinal hemangioblastoma', 'Disease', (126, 150)) ('polycythemia', 'Phenotype', 'HP:0001901', (76, 88)) ('paraganglioma', 'Disease', (109, 122)) ('polycythemia', 'Disease', 'MESH:D011086', (76, 88)) ('retinal hemangioblastoma', 'Phenotype', 'HP:0009711', (126, 150)) ('retinal hemangioblastoma', 'Disease', 'MESH:D018325', (126, 150)) ('paraganglioma', 'Disease', 'MESH:D010235', (109, 122)) ('PHEO', 'Disease', (96, 100)) ('polycythemia', 'Disease', (76, 88)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (134, 150)) ('paraganglioma', 'Phenotype', 'HP:0002668', (109, 122)) 111994 29789510 The association of PGL with retinal hemangioblastoma in these two sisters with the same c.311G > T mutation prompted us to diagnose familial VHL syndrome. ('PGL', 'Phenotype', 'HP:0002668', (19, 22)) ('c.311G > T', 'Mutation', 'rs869025630', (88, 98)) ('association', 'Interaction', (4, 15)) ('retinal hemangioblastoma', 'Disease', (28, 52)) ('familial VHL syndrome', 'Disease', (132, 153)) ('familial VHL syndrome', 'Disease', 'MESH:D006623', (132, 153)) ('retinal hemangioblastoma', 'Phenotype', 'HP:0009711', (28, 52)) ('hemangioblastoma', 'Phenotype', 'HP:0010797', (36, 52)) ('retinal hemangioblastoma', 'Disease', 'MESH:D018325', (28, 52)) ('PGL', 'Gene', (19, 22)) ('c.311G > T', 'Var', (88, 98)) 111998 26957701 Resection of the tumor results in acute withdrawal of catecholamines, which may lead to severe hypotension. ('lead to', 'Reg', (80, 87)) ('tumor', 'Disease', (17, 22)) ('hypotension', 'Disease', 'MESH:D007022', (95, 106)) ('Resection', 'Var', (0, 9)) ('catecholamines', 'Chemical', 'MESH:D002395', (54, 68)) ('hypotension', 'Disease', (95, 106)) ('withdrawal of catecholamines', 'MPA', (40, 68)) ('tumor', 'Disease', 'MESH:D009369', (17, 22)) ('hypotension', 'Phenotype', 'HP:0002615', (95, 106)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) 112059 26957701 Preoperative assessment is the corner stone in management of pheochromocytoma and was done prior to surgery according to Roizen's Criteria: BP < 160/90 mmHg for 24 h before surgery No orthostatic hypotension with BP < 80-45 mmHg ECG should be free of any ST-T changes for a week and No PVC's more than 1 in 5 min. ('hypotension', 'Phenotype', 'HP:0002615', (196, 207)) ('orthostatic hypotension', 'Disease', (184, 207)) ('orthostatic hypotension', 'Phenotype', 'HP:0001278', (184, 207)) ('pheochromocytoma', 'Disease', (61, 77)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (61, 77)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (61, 77)) ('BP < 160/90', 'Var', (140, 151)) ('orthostatic hypotension', 'Disease', 'MESH:D007024', (184, 207)) 112070 24757537 The presence of the succinate dehydrogenase complex subunit D (SDHD) mutation that causes the pheochromocytoma was confirmed but no mutations in the family members were found. ('pheochromocytoma', 'Disease', (94, 110)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (94, 110)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (94, 110)) ('mutation', 'Var', (69, 77)) ('succinate dehydrogenase complex subunit D', 'Gene', '6392', (20, 61)) ('succinate dehydrogenase complex subunit D', 'Gene', (20, 61)) ('SDHD', 'Gene', '6392', (63, 67)) ('causes', 'Reg', (83, 89)) ('SDHD', 'Gene', (63, 67)) 112081 24757537 The tests revealed the existence of mutation in SDHD gene that causes a hereditary form of pheochromocytoma. ('pheochromocytoma', 'Disease', (91, 107)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (91, 107)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (91, 107)) ('causes', 'Reg', (63, 69)) ('SDHD', 'Gene', '6392', (48, 52)) ('SDHD', 'Gene', (48, 52)) ('mutation', 'Var', (36, 44)) 112112 24757537 In our case, the mutation in the SDHD gene proved to be spontaneous as no mutation in family members was found. ('SDHD', 'Gene', '6392', (33, 37)) ('SDHD', 'Gene', (33, 37)) ('mutation', 'Var', (17, 25)) 112166 24400812 MEN 2A is associated with germ line mutation of RET proto-oncogene. ('RET', 'Gene', '5979', (48, 51)) ('associated', 'Reg', (10, 20)) ('germ line mutation', 'Var', (26, 44)) ('MEN 2A', 'Gene', (0, 6)) ('MEN 2A', 'Gene', '5979', (0, 6)) ('RET', 'Gene', (48, 51)) 112167 24400812 Genetic testing can detect missense mutation of RET proto-oncogene, which makes it a reliable method to diagnosis MEN 2A. ('RET', 'Gene', '5979', (48, 51)) ('missense mutation', 'Var', (27, 44)) ('RET', 'Gene', (48, 51)) ('MEN 2A', 'Gene', '5979', (114, 120)) ('MEN 2A', 'Gene', (114, 120)) 112180 24400812 Otherwise, surgeries may lead to the onset of fatal hypertension. ('hypertension', 'Disease', (52, 64)) ('hypertension', 'Disease', 'MESH:D006973', (52, 64)) ('lead to', 'Reg', (25, 32)) ('surgeries', 'Var', (11, 20)) ('hypertension', 'Phenotype', 'HP:0000822', (52, 64)) 112207 23785438 This progenitor human cell line is normal diploid except for a deletion in the p16 region and has inducible neuroendocrine biomarkers. ('human', 'Species', '9606', (16, 21)) ('p16', 'Gene', '1029', (79, 82)) ('p16', 'Gene', (79, 82)) ('deletion', 'Var', (63, 71)) 112255 23785438 Transitions of the precursor ions to product ions were m/z 152 107 for NE, m/z 184 107 for E, and m/z 184 166 for NMN. ('m/z 184 166', 'Var', (98, 109)) ('m/z 184 107', 'Var', (75, 86)) ('m/z 152 107', 'Var', (55, 66)) ('NMN', 'Chemical', 'MESH:D009647', (114, 117)) 112270 23785438 Regions of copy number gain and loss were then statistically detected using the Genomic Segmentation method within PGS using default parameters, except for the "Number of Markers" parameter, which was changed to 50. ('loss', 'NegReg', (32, 36)) ('PGS', 'Disease', 'MESH:C535773', (115, 118)) ('copy number', 'Var', (11, 22)) ('gain', 'PosReg', (23, 27)) ('PGS', 'Disease', (115, 118)) 112295 23785438 The SNP analysis of a portion of the tumor tissue did not show a microdeletion on 9p, at least at the gross level. ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('tumor', 'Disease', (37, 42)) ('tumor', 'Disease', 'MESH:D009369', (37, 42)) ('microdeletion', 'Var', (65, 78)) 112308 23785438 When comparing COMT expressions between the groups, COMT expression is 8-fold higher in hPheo1 and in primary cultures compared with the tumor tissue. ('COMT', 'Gene', (15, 19)) ('expression', 'MPA', (57, 67)) ('tumor', 'Disease', (137, 142)) ('COMT', 'Gene', '1312', (52, 56)) ('hPheo1', 'Var', (88, 94)) ('higher', 'PosReg', (78, 84)) ('COMT', 'Gene', '1312', (15, 19)) ('COMT', 'Gene', (52, 56)) ('tumor', 'Disease', 'MESH:D009369', (137, 142)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) 112310 23785438 Figure S4 shows qPCR results indicating evidence of reduced expression of SDHB, RET, and COMT in hPheo1 cells after respective shRNA knockdowns. ('expression', 'MPA', (60, 70)) ('RET', 'Gene', (80, 83)) ('COMT', 'Gene', '1312', (89, 93)) ('reduced', 'NegReg', (52, 59)) ('SDHB', 'Gene', '6390', (74, 78)) ('knockdowns', 'Var', (133, 143)) ('SDHB', 'Gene', (74, 78)) ('RET', 'Gene', '5979', (80, 83)) ('COMT', 'Gene', (89, 93)) 112311 23785438 Figure S5 shows no up-regulation in the differentiation markers of TH, DBH or chromogranin A after stable shRNA knockdown of SDHB, RET, and COMT. ('SDHB', 'Gene', (125, 129)) ('COMT', 'Gene', (140, 144)) ('DBH', 'Gene', '1621', (71, 74)) ('DBH', 'Gene', (71, 74)) ('up-regulation', 'PosReg', (19, 32)) ('RET', 'Gene', '5979', (131, 134)) ('chromogranin A', 'Gene', '1113', (78, 92)) ('knockdown', 'Var', (112, 121)) ('chromogranin A', 'Gene', (78, 92)) ('TH', 'Gene', '7054', (67, 69)) ('RET', 'Gene', (131, 134)) ('COMT', 'Gene', '1312', (140, 144)) ('SDHB', 'Gene', '6390', (125, 129)) 112312 23785438 With RET knockdown, there was a minimal increase in DOPADC, yet the expression of other components for catecholamine synthesis were either unchanged or low. ('low', 'NegReg', (152, 155)) ('knockdown', 'Var', (9, 18)) ('RET', 'Gene', (5, 8)) ('expression of', 'MPA', (68, 81)) ('catecholamine', 'Chemical', 'MESH:D002395', (103, 116)) ('RET', 'Gene', '5979', (5, 8)) ('DOPADC', 'MPA', (52, 58)) ('DOPADC', 'Chemical', '-', (52, 58)) 112313 23785438 On the other hand, with SDHB, RET, and COMT knockdowns, DBH expression was more reduced compared to other differentiation markers. ('expression', 'MPA', (60, 70)) ('RET', 'Gene', (30, 33)) ('COMT', 'Gene', (39, 43)) ('DBH', 'Gene', (56, 59)) ('DBH', 'Gene', '1621', (56, 59)) ('knockdowns', 'Var', (44, 54)) ('reduced', 'NegReg', (80, 87)) ('RET', 'Gene', '5979', (30, 33)) ('COMT', 'Gene', '1312', (39, 43)) ('SDHB', 'Gene', '6390', (24, 28)) ('SDHB', 'Gene', (24, 28)) 112317 23785438 In contrast, it was not necessary for us to add CDK4, as hPheo1 cells were found to have a deletion in CDKN2A (p16 gene) with no other large genetic changes noted on karyotype and SNP analysis. ('CDK4', 'Gene', (48, 52)) ('deletion', 'Var', (91, 99)) ('CDK4', 'Gene', '1019', (48, 52)) ('p16', 'Gene', '1029', (111, 114)) ('CDKN2A', 'Gene', (103, 109)) ('p16', 'Gene', (111, 114)) ('CDKN2A', 'Gene', '1029', (103, 109)) 112318 23785438 It is unclear whether mutations in p16 are important for oncogenesis of pheochromocytoma. ('oncogenesis of pheochromocytoma', 'Disease', 'MESH:D063646', (57, 88)) ('p16', 'Gene', '1029', (35, 38)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (72, 88)) ('p16', 'Gene', (35, 38)) ('oncogenesis of pheochromocytoma', 'Disease', (57, 88)) ('mutations', 'Var', (22, 31)) 112319 23785438 An earlier study using semi-quantitative PCR indicated that deletion of the p16 gene may not be common in pheochromocytoma, so this loss could have occurred during the establishment of the cells in culture. ('p16', 'Gene', '1029', (76, 79)) ('deletion', 'Var', (60, 68)) ('pheochromocytoma', 'Disease', (106, 122)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (106, 122)) ('p16', 'Gene', (76, 79)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (106, 122)) 112320 23785438 In contrast, a recent report utilizing data from tissue microarray, quantitative real-time PCR, and methylation-specific PCR noted an overall frequency of genetic alterations involving the p16 gene in over 60% of pheochromocytomas. ('genetic alterations', 'Var', (155, 174)) ('pheochromocytomas', 'Disease', (213, 230)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (213, 230)) ('p16', 'Gene', (189, 192)) ('rat', 'Species', '10116', (167, 170)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (213, 230)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (213, 229)) ('p16', 'Gene', '1029', (189, 192)) 112321 23785438 The tumor tissue from which hPheo1 cells are derived did not grossly have a p16 gene deletion, however, it did show additional cytogenetic alterations not found in the hPheo1 line. ('tumor', 'Disease', (4, 9)) ('p16', 'Gene', '1029', (76, 79)) ('rat', 'Species', '10116', (143, 146)) ('tumor', 'Disease', 'MESH:D009369', (4, 9)) ('deletion', 'Var', (85, 93)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) ('p16', 'Gene', (76, 79)) 112322 23785438 Of note, alterations of -1p, -3q, along with losses of 11p and 11q, have been previously reported in pheochromocytoma SNP analysis. ('pheochromocytoma', 'Disease', 'MESH:D010673', (101, 117)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (101, 117)) ('pheochromocytoma', 'Disease', (101, 117)) ('alterations', 'Var', (9, 20)) ('rat', 'Species', '10116', (13, 16)) ('losses', 'NegReg', (45, 51)) ('11p', 'MPA', (55, 58)) 112329 23785438 Comparison analysis of the gene expression analysis between hPheo1 cells and the tumor tissue from which they derive also show many differences, yet several genes are highly expressed in both hPheo1 cells and pheochromocytoma tumor tissue, including transforming growth factor-beta receptor III (TGFBR3), involved in differentiation between benign and malignant pheochromocytomas; LOC399942; tubulin alpha-2 chain transcript variant 5, involved with overexpression in neuroblastoma; and breast cancer anti-estrogen resistance 1 (BCAR1), related to the accelerated differentiation of PC-12 cells in response to nerve growth factor (NGF). ('LOC399942', 'Var', (381, 390)) ('tumor', 'Disease', 'MESH:D009369', (226, 231)) ('nerve growth factor', 'Gene', '4803', (610, 629)) ('malignant pheochromocytomas', 'Disease', (352, 379)) ('cancer', 'Phenotype', 'HP:0002664', (494, 500)) ('neuroblastoma', 'Disease', (468, 481)) ('breast cancer anti-estrogen resistance 1', 'Gene', '25414', (487, 527)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (362, 378)) ('TGFBR3', 'Gene', '29610', (296, 302)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (468, 481)) ('BCAR1', 'Gene', (529, 534)) ('tumor', 'Phenotype', 'HP:0002664', (226, 231)) ('neuroblastoma', 'Disease', 'MESH:D009447', (468, 481)) ('nerve growth factor', 'Gene', (610, 629)) ('tumor', 'Disease', (81, 86)) ('pheochromocytoma tumor', 'Disease', 'MESH:D010673', (209, 231)) ('breast cancer', 'Phenotype', 'HP:0003002', (487, 500)) ('breast cancer anti-estrogen resistance 1', 'Gene', (487, 527)) ('differentiation', 'CPA', (564, 579)) ('pheochromocytoma tumor', 'Disease', (209, 231)) ('tumor', 'Disease', 'MESH:D009369', (81, 86)) ('accelerated', 'PosReg', (552, 563)) ('malignant pheochromocytomas', 'Disease', 'MESH:D010673', (352, 379)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (209, 225)) ('rat', 'Species', '10116', (558, 561)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (362, 379)) ('TGFBR3', 'Gene', (296, 302)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('PC-12', 'CellLine', 'CVCL:0481', (583, 588)) ('BCAR1', 'Gene', '25414', (529, 534)) ('tumor', 'Disease', (226, 231)) 112335 23785438 Since COMT is important for the degradation of catecholamines, shRNA was used to knockdown COMT; however, this did not induce the up-regulation of TH, DOPADC, or DBH for catecholamine production. ('DOPADC', 'Chemical', '-', (151, 157)) ('COMT', 'Gene', '1312', (6, 10)) ('COMT', 'Gene', (91, 95)) ('TH', 'Gene', '7054', (147, 149)) ('DBH', 'Gene', '1621', (162, 165)) ('COMT', 'Gene', (6, 10)) ('DBH', 'Gene', (162, 165)) ('catecholamines', 'Chemical', 'MESH:D002395', (47, 61)) ('catecholamine', 'Chemical', 'MESH:D002395', (170, 183)) ('knockdown', 'Var', (81, 90)) ('COMT', 'Gene', '1312', (91, 95)) ('catecholamine', 'Chemical', 'MESH:D002395', (47, 60)) 112337 23785438 In addition, shRNA was used to knockdown other genes associated with pheochromocytoma pathogenesis such as SDHB (Figure S5), yet markers for re-differentiation were not up-regulated either. ('SDHB', 'Gene', (107, 111)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (69, 85)) ('pheochromocytoma', 'Disease', (69, 85)) ('SDHB', 'Gene', '6390', (107, 111)) ('knockdown', 'Var', (31, 40)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (69, 85)) 112432 33575936 Three patients had sporadic pheochromocytoma and one patient a SDHB mutation with bone metastases of extra-adrenal abdominal paraganglioma. ('SDHB', 'Gene', (63, 67)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (28, 44)) ('bone metastases', 'Disease', (82, 97)) ('bone metastases', 'Disease', 'MESH:D009362', (82, 97)) ('mutation', 'Var', (68, 76)) ('paraganglioma', 'Phenotype', 'HP:0002668', (125, 138)) ('patient', 'Species', '9606', (6, 13)) ('metastases of extra-adrenal abdominal paraganglioma', 'Disease', 'MESH:D010236', (87, 138)) ('patients', 'Species', '9606', (6, 14)) ('pheochromocytoma', 'Disease', (28, 44)) ('SDHB', 'Gene', '6390', (63, 67)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (28, 44)) ('patient', 'Species', '9606', (53, 60)) 112445 33575936 In 2014, a 17-year-old man with unremarkable medical history was analyzed in the department of pediatric nephrology for hypertension (188/88 mmHg) combined with exercise-induced paroxysmal headaches. ('hypertension', 'Disease', 'MESH:D006973', (120, 132)) ('headaches', 'Phenotype', 'HP:0002315', (189, 198)) ('paroxysmal headaches', 'Phenotype', 'HP:0002331', (178, 198)) ('exercise-induced paroxysmal headaches', 'Phenotype', 'HP:0003738', (161, 198)) ('paroxysmal headaches', 'Disease', 'MESH:D006261', (178, 198)) ('hypertension', 'Disease', (120, 132)) ('headache', 'Phenotype', 'HP:0002315', (189, 197)) ('hypertension', 'Phenotype', 'HP:0000822', (120, 132)) ('paroxysmal headaches', 'Disease', (178, 198)) ('188/88', 'Var', (134, 140)) 112460 33575936 In addition to milrinone, metyrosine was initiated to reduce catecholamine synthesis, resulting in further improvement of his clinical condition and recovery of systolic function on echocardiography. ('metyrosine', 'Chemical', 'MESH:D019805', (26, 36)) ('reduce', 'NegReg', (54, 60)) ('catecholamine synthesis', 'MPA', (61, 84)) ('improvement', 'PosReg', (107, 118)) ('metyrosine', 'Var', (26, 36)) ('systolic function', 'MPA', (161, 178)) ('catecholamine', 'Chemical', 'MESH:D002395', (61, 74)) ('milrinone', 'Chemical', 'MESH:D020105', (15, 24)) 112462 33575936 Although his family history was negative, genetic testing for known germline mutations was positive for SDHB mutation, confirming the diagnosis of hereditary paraganglioma/pheochromocytoma syndrome type 4 (PGL4). ('paraganglioma', 'Phenotype', 'HP:0002668', (158, 171)) ('mutation', 'Var', (109, 117)) ('PGL4', 'Gene', '6390', (206, 210)) ('SDHB', 'Gene', '6390', (104, 108)) ('PGL4', 'Gene', (206, 210)) ('hereditary paraganglioma/pheochromocytoma syndrome', 'Disease', (147, 197)) ('hereditary paraganglioma/pheochromocytoma syndrome', 'Disease', 'MESH:D010673', (147, 197)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (172, 188)) ('positive', 'Reg', (91, 99)) ('SDHB', 'Gene', (104, 108)) 112490 33575936 It has been reported that in 1045 DNA samples of Dutch PPGL patients, 690 were mutation-positive (66%), suggesting a higher prevalence of syndromic PPGL compared to those noted in other studies, which reported a prevalence of syndromic PPGL in their cohorts ranging from 14 to 21%. ('syndromic', 'Disease', (138, 147)) ('patients', 'Species', '9606', (60, 68)) ('PPGL', 'Chemical', '-', (236, 240)) ('mutation-positive', 'Var', (79, 96)) ('PPGL', 'Chemical', '-', (55, 59)) ('PPGL', 'Chemical', '-', (148, 152)) 112542 33575936 Furthermore, metyrosine can be given in addition to alpha blockade to reduce catecholamine synthesis by inhibiting tyrosine hydroxylase, which catalyzes tyrosine to dihydroxyphenylalanine (DOPA), the first and the rate-limiting step of the catecholamine synthesis pathway. ('catecholamine', 'Chemical', 'MESH:D002395', (240, 253)) ('metyrosine', 'Chemical', 'MESH:D019805', (13, 23)) ('catecholamine synthesis', 'MPA', (77, 100)) ('tyrosine', 'Enzyme', (115, 123)) ('tyrosine', 'Chemical', 'MESH:D014443', (115, 123)) ('tyrosine', 'Chemical', 'MESH:D014443', (15, 23)) ('metyrosine', 'Var', (13, 23)) ('inhibiting', 'NegReg', (104, 114)) ('tyrosine', 'Chemical', 'MESH:D014443', (153, 161)) ('reduce', 'NegReg', (70, 76)) ('DOPA', 'Chemical', 'MESH:D004295', (189, 193)) ('dihydroxyphenylalanine', 'Chemical', 'MESH:D004295', (165, 187)) ('catecholamine', 'Chemical', 'MESH:D002395', (77, 90)) 112543 33575936 It has been suggested that the addition of metyrosine results in better blood pressure management than alpha blockade alone. ('blood pressure management', 'MPA', (72, 97)) ('metyrosine', 'Var', (43, 53)) ('metyrosine', 'Chemical', 'MESH:D019805', (43, 53)) ('better', 'PosReg', (65, 71)) 112547 33575936 In addition, deferring surgery puts the patient at risk for developing recurrent crisis, with further organ dysfunction. ('patient', 'Species', '9606', (40, 47)) ('organ dysfunction', 'Disease', (102, 119)) ('organ dysfunction', 'Disease', 'MESH:D009102', (102, 119)) ('deferring surgery', 'Var', (13, 30)) 112562 33937330 The high expression of PERK was associated with a poor prognosis in KIRP, LGG, BRCA, and THCA and with a favorable prognosis in HNSC. ('HNSC', 'Phenotype', 'HP:0012288', (128, 132)) ('BRCA', 'Gene', '672', (79, 83)) ('BRCA', 'Gene', (79, 83)) ('THCA', 'Phenotype', 'HP:0002890', (89, 93)) ('KIRP', 'Disease', (68, 72)) ('high', 'Var', (4, 8)) ('THCA', 'Disease', (89, 93)) ('PERK', 'Gene', (23, 27)) ('LGG', 'Disease', (74, 77)) ('PERK', 'Gene', '9451', (23, 27)) ('BRCA', 'Phenotype', 'HP:0003002', (79, 83)) 112565 33937330 Conclusion: The high expression of PERK could promote the infiltration of multiple immune cells in the tumor microenvironment and could deteriorate the outcomes of patients with breast and thyroid cancers, suggesting that PERK as well as tumor-infiltrating immune cells could be taken as potential biomarkers of prognosis. ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('tumor', 'Phenotype', 'HP:0002664', (238, 243)) ('infiltration', 'CPA', (58, 70)) ('deteriorate', 'NegReg', (136, 147)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (189, 203)) ('PERK', 'Gene', '9451', (222, 226)) ('patients', 'Species', '9606', (164, 172)) ('outcomes', 'CPA', (152, 160)) ('high expression', 'Var', (16, 31)) ('promote', 'PosReg', (46, 53)) ('cancers', 'Phenotype', 'HP:0002664', (197, 204)) ('tumor', 'Disease', (103, 108)) ('PERK', 'Gene', (35, 39)) ('tumor', 'Disease', (238, 243)) ('cancer', 'Phenotype', 'HP:0002664', (197, 203)) ('tumor', 'Disease', 'MESH:D009369', (103, 108)) ('breast and thyroid cancers', 'Disease', 'MESH:D001943', (178, 204)) ('tumor', 'Disease', 'MESH:D009369', (238, 243)) ('PERK', 'Gene', '9451', (35, 39)) ('PERK', 'Gene', (222, 226)) 112594 33937330 Inhibitors augment T-cell activity by blocking programmed cell death protein 1 (PD-1) and PD-1 ligand (PD-L1) and show remarkable clinical effects (Topalian et al.,; Gordon et al.,). ('PD-L1', 'Gene', '29126', (103, 108)) ('blocking', 'NegReg', (38, 46)) ('augment', 'PosReg', (11, 18)) ('programmed cell death protein 1', 'Gene', (47, 78)) ('programmed cell death protein 1', 'Gene', '5133', (47, 78)) ('Inhibitors', 'Var', (0, 10)) ('PD-1', 'Gene', '5133', (90, 94)) ('PD-L1', 'Gene', (103, 108)) ('PD-1', 'Gene', (90, 94)) ('PD-1', 'Gene', (80, 84)) ('T-cell activity', 'CPA', (19, 34)) ('PD-1', 'Gene', '5133', (80, 84)) 112625 33937330 A previous study has shown that PERK inhibition by siRNA or GSK2656157 (a small molecule inhibitor against the PERK/elF2alpha/ATF4 pathway) might improve clinical prognosis and enhance the treatment of esophageal squamous cell carcinoma (ESCC) patients (Wang et al.,), but little research is reported in other types of cancers. ('ATF4', 'Gene', '468', (126, 130)) ('cancers', 'Phenotype', 'HP:0002664', (319, 326)) ('cancers', 'Disease', (319, 326)) ('PERK', 'Gene', '9451', (111, 115)) ('esophageal squamous cell carcinoma', 'Disease', (202, 236)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (213, 236)) ('patients', 'Species', '9606', (244, 252)) ('GSK2656157', 'Var', (60, 70)) ('cancer', 'Phenotype', 'HP:0002664', (319, 325)) ('inhibition', 'NegReg', (37, 47)) ('clinical prognosis', 'CPA', (154, 172)) ('esophageal squamous cell carcinoma', 'Disease', 'MESH:D000077277', (202, 236)) ('PERK', 'Gene', (32, 36)) ('cancers', 'Disease', 'MESH:D009369', (319, 326)) ('treatment', 'CPA', (189, 198)) ('GSK2656157', 'Chemical', 'MESH:C000597302', (60, 70)) ('improve', 'PosReg', (146, 153)) ('enhance', 'PosReg', (177, 184)) ('carcinoma', 'Phenotype', 'HP:0030731', (227, 236)) ('PERK', 'Gene', (111, 115)) ('ATF4', 'Gene', (126, 130)) ('PERK', 'Gene', '9451', (32, 36)) 112627 33937330 According to the PrognoScan database, the high expression of PERK was associated with a poor prognosis in brain cancer (shorter OS, p = 0.003) and soft tissue cancer (shorter DRFS, p = 0.008) and related to a favorable prognosis in lung cancer (longer OS and RFS, p < 0.05, Figure 3). ('soft tissue cancer', 'Phenotype', 'HP:0031459', (147, 165)) ('cancer', 'Disease', (112, 118)) ('lung cancer', 'Disease', 'MESH:D008175', (232, 243)) ('high expression', 'Var', (42, 57)) ('cancer', 'Phenotype', 'HP:0002664', (112, 118)) ('PERK', 'Gene', (61, 65)) ('lung cancer', 'Phenotype', 'HP:0100526', (232, 243)) ('cancer', 'Disease', (159, 165)) ('cancer', 'Phenotype', 'HP:0002664', (159, 165)) ('brain cancer', 'Phenotype', 'HP:0030692', (106, 118)) ('cancer', 'Disease', (237, 243)) ('PERK', 'Gene', '9451', (61, 65)) ('brain cancer', 'Disease', 'MESH:D001932', (106, 118)) ('cancer', 'Phenotype', 'HP:0002664', (237, 243)) ('cancer', 'Disease', 'MESH:D009369', (112, 118)) ('cancer', 'Disease', 'MESH:D009369', (159, 165)) ('lung cancer', 'Disease', (232, 243)) ('cancer', 'Disease', 'MESH:D009369', (237, 243)) ('brain cancer', 'Disease', (106, 118)) 112631 33937330 The high expression of PERK was associated with a favorable prognosis in bladder carcinoma (p = 0.006), esophageal squamous cell carcinoma (p = 0.0022), lung adenocarcinoma (p = 0.0054), rectum adenocarcinoma (p = 0.026), and thymoma (p = 0.039, Figure 4) and related to a poor prognosis in kidney renal papillary cell carcinoma (p = 0.014), liver hepatocellular carcinoma (p = 0.023), and thyroid carcinoma (p = 0.0036, Figure 4). ('bladder carcinoma', 'Phenotype', 'HP:0002862', (73, 90)) ('thymoma', 'Disease', (226, 233)) ('bladder carcinoma', 'Disease', 'MESH:D001749', (73, 90)) ('high expression', 'Var', (4, 19)) ('thymoma', 'Phenotype', 'HP:0100522', (226, 233)) ('carcinoma', 'Phenotype', 'HP:0030731', (81, 90)) ('kidney renal papillary cell carcinoma', 'Disease', (291, 328)) ('rectum adenocarcinoma', 'Disease', (187, 208)) ('carcinoma', 'Phenotype', 'HP:0030731', (199, 208)) ('carcinoma', 'Phenotype', 'HP:0030731', (319, 328)) ('PERK', 'Gene', '9451', (23, 27)) ('lung adenocarcinoma', 'Disease', (153, 172)) ('bladder carcinoma', 'Disease', (73, 90)) ('esophageal squamous cell carcinoma', 'Disease', (104, 138)) ('liver hepatocellular carcinoma', 'Disease', (342, 372)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (390, 407)) ('lung adenocarcinoma', 'Disease', 'MESH:D000077192', (153, 172)) ('thyroid carcinoma', 'Disease', (390, 407)) ('kidney renal papillary cell carcinoma', 'Disease', 'MESH:C538614', (291, 328)) ('lung adenocarcinoma', 'Phenotype', 'HP:0030078', (153, 172)) ('rectum adenocarcinoma', 'Disease', 'MESH:D012004', (187, 208)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (390, 407)) ('renal papillary cell carcinoma', 'Phenotype', 'HP:0006766', (298, 328)) ('hepatocellular carcinoma', 'Phenotype', 'HP:0001402', (348, 372)) ('thymoma', 'Disease', 'MESH:D013945', (226, 233)) ('carcinoma', 'Phenotype', 'HP:0030731', (163, 172)) ('esophageal squamous cell carcinoma', 'Disease', 'MESH:D000077277', (104, 138)) ('carcinoma', 'Phenotype', 'HP:0030731', (129, 138)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (115, 138)) ('PERK', 'Gene', (23, 27)) ('liver hepatocellular carcinoma', 'Disease', 'MESH:D006528', (342, 372)) 112635 33937330 According to the UALCAN database, the high expression of PERK was associated with a poor prognosis in kidney renal papillary cell carcinoma (KIRP) (p = 0.01), brain lower grade glioma (LGG) (p = 0.00016), and THCA (p = 0.017, Figure 5). ('renal papillary cell carcinoma', 'Phenotype', 'HP:0006766', (109, 139)) ('THCA', 'Phenotype', 'HP:0002890', (209, 213)) ('high expression', 'Var', (38, 53)) ('glioma', 'Disease', (177, 183)) ('THCA', 'Disease', (209, 213)) ('glioma', 'Disease', 'MESH:D005910', (177, 183)) ('kidney renal papillary cell carcinoma', 'Disease', (102, 139)) ('carcinoma', 'Phenotype', 'HP:0030731', (130, 139)) ('PERK', 'Gene', (57, 61)) ('glioma', 'Phenotype', 'HP:0009733', (177, 183)) ('kidney renal papillary cell carcinoma', 'Disease', 'MESH:C538614', (102, 139)) ('PERK', 'Gene', '9451', (57, 61)) 112636 33937330 Consistent with the results of the Kaplan:Meier plotter database, PERK expression in BRCA had a poor prognosis (OS < 4,000 days, ~130 months, p = 0.025, Figure 5). ('BRCA', 'Gene', (85, 89)) ('PERK', 'Gene', (66, 70)) ('expression', 'Var', (71, 81)) ('PERK', 'Gene', '9451', (66, 70)) ('BRCA', 'Phenotype', 'HP:0003002', (85, 89)) ('BRCA', 'Gene', '672', (85, 89)) 112638 33937330 Together, the high expression of PERK is associated with a poor prognosis in KIRP, LGG, BRCA, and THCA and with a favorable prognosis in HNSC. ('THCA', 'Phenotype', 'HP:0002890', (98, 102)) ('THCA', 'Disease', (98, 102)) ('PERK', 'Gene', (33, 37)) ('HNSC', 'Disease', (137, 141)) ('LGG', 'Disease', (83, 86)) ('KIRP', 'Disease', (77, 81)) ('high', 'Var', (14, 18)) ('HNSC', 'Phenotype', 'HP:0012288', (137, 141)) ('BRCA', 'Phenotype', 'HP:0003002', (88, 92)) ('BRCA', 'Gene', '672', (88, 92)) ('PERK', 'Gene', '9451', (33, 37)) ('BRCA', 'Gene', (88, 92)) 112671 33937330 Lung cancer was an exception where high levels of PERK expression showed a better prognosis. ('Lung cancer', 'Phenotype', 'HP:0100526', (0, 11)) ('PERK', 'Gene', (50, 54)) ('high levels', 'Var', (35, 46)) ('Lung cancer', 'Disease', (0, 11)) ('cancer', 'Phenotype', 'HP:0002664', (5, 11)) ('PERK', 'Gene', '9451', (50, 54)) ('Lung cancer', 'Disease', 'MESH:D008175', (0, 11)) 112673 33937330 The UALCAN database analysis demonstrated that the high expression of PERK was associated with a poor prognosis in KIRP, LGG, THCA, and BRCA (Figure 5). ('KIRP', 'Disease', (115, 119)) ('PERK', 'Gene', (70, 74)) ('LGG', 'Disease', (121, 124)) ('THCA', 'Phenotype', 'HP:0002890', (126, 130)) ('THCA', 'Disease', (126, 130)) ('BRCA', 'Gene', '672', (136, 140)) ('PERK', 'Gene', '9451', (70, 74)) ('high expression', 'Var', (51, 66)) ('BRCA', 'Phenotype', 'HP:0003002', (136, 140)) ('BRCA', 'Gene', (136, 140)) 112676 33937330 Inhibition of CREB3L1 by genetic or pharmacological methods suppresses cancer cell invasion and metastasis (Feng et al.,). ('cancer', 'Disease', 'MESH:D009369', (71, 77)) ('CREB3L1', 'Gene', '90993', (14, 21)) ('cancer', 'Disease', (71, 77)) ('suppresses', 'NegReg', (60, 70)) ('Inhibition', 'Var', (0, 10)) ('cancer', 'Phenotype', 'HP:0002664', (71, 77)) ('CREB3L1', 'Gene', (14, 21)) 112677 33937330 Another report showed that inhibition of the PERK-eIF2alpha-GRP94 signaling pathway silenced the epidermal growth factor receptor (EGFR) and then increased the radiosensitivity of both radiosensitive and radioresistant oropharyngeal squamous cell carcinoma (OSCC) cells (Zhang et al.,). ('radiosensitivity', 'CPA', (160, 176)) ('EGFR', 'Gene', (131, 135)) ('inhibition', 'Var', (27, 37)) ('squamous cell carcinoma', 'Disease', 'MESH:D002294', (233, 256)) ('carcinoma', 'Phenotype', 'HP:0030731', (247, 256)) ('squamous cell carcinoma', 'Disease', (233, 256)) ('PERK', 'Gene', '9451', (45, 49)) ('increased', 'PosReg', (146, 155)) ('silenced', 'NegReg', (84, 92)) ('OSCC', 'Phenotype', 'HP:0012182', (258, 262)) ('GRP94', 'Gene', '7184', (60, 65)) ('EGFR', 'Gene', '1956', (131, 135)) ('eIF2alpha', 'Gene', (50, 59)) ('squamous cell carcinoma', 'Phenotype', 'HP:0002860', (233, 256)) ('eIF2alpha', 'Gene', '83939', (50, 59)) ('GRP94', 'Gene', (60, 65)) ('oropharyngeal squamous cell carcinoma', 'Phenotype', 'HP:0012182', (219, 256)) ('epidermal growth factor receptor', 'Gene', (97, 129)) ('PERK', 'Gene', (45, 49)) ('epidermal growth factor receptor', 'Gene', '1956', (97, 129)) 112696 33937330 Expansion of myeloid-derived suppressor cells (MDSCs) has emerged as a key mechanism of antitumor immune evasion and correlates with a poor clinical outcome and resistance to cancer immunotherapy (Lu et al.,). ('cancer', 'Phenotype', 'HP:0002664', (175, 181)) ('tumor', 'Disease', 'MESH:D009369', (92, 97)) ('cancer', 'Disease', (175, 181)) ('cancer', 'Disease', 'MESH:D009369', (175, 181)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('tumor', 'Disease', (92, 97)) ('Expansion', 'Var', (0, 9)) 112698 33937330 PERK deletion transformed MDSCs into myeloid cells that activated CD8+ T-cell-mediated immunity against cancer (Mohamed et al.,). ('PERK', 'Gene', (0, 4)) ('deletion', 'Var', (5, 13)) ('PERK', 'Gene', '9451', (0, 4)) ('cancer', 'Phenotype', 'HP:0002664', (104, 110)) ('CD8', 'Gene', (66, 69)) ('CD8', 'Gene', '925', (66, 69)) ('activated', 'PosReg', (56, 65)) ('cancer', 'Disease', (104, 110)) ('cancer', 'Disease', 'MESH:D009369', (104, 110)) 112699 33937330 Another study showed that inhibition of PERK in CD8+ T cells abrogates mitochondrial ROS generation in PD-1+ CD8+ tumor-infiltrating lymphocytes (TILs), which boosts CD8+ TIL viability and enhances antitumor immunity (Hurst et al.,). ('abrogates', 'NegReg', (61, 70)) ('boosts', 'PosReg', (159, 165)) ('CD8', 'Gene', '925', (48, 51)) ('ROS', 'Chemical', '-', (85, 88)) ('CD8', 'Gene', '925', (166, 169)) ('CD8', 'Gene', '925', (109, 112)) ('tumor', 'Disease', (202, 207)) ('inhibition', 'Var', (26, 36)) ('tumor', 'Disease', (114, 119)) ('mitochondrial ROS generation', 'MPA', (71, 99)) ('tumor', 'Disease', 'MESH:D009369', (202, 207)) ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('PD-1', 'Gene', (103, 107)) ('CD8', 'Gene', (48, 51)) ('PERK', 'Gene', (40, 44)) ('PD-1', 'Gene', '5133', (103, 107)) ('enhances', 'PosReg', (189, 197)) ('CD8', 'Gene', (166, 169)) ('tumor', 'Phenotype', 'HP:0002664', (202, 207)) ('CD8', 'Gene', (109, 112)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('PERK', 'Gene', '9451', (40, 44)) 112709 32688340 Genotype-phenotype associations in PPGLs in 59 patients with variants in SDHX genes Phaeochromocytomas and paragangliomas (PPGLs) are tumours of the adrenal medulla and extra-adrenal sympathetic nervous system which often secrete catecholamines. ('tumours', 'Phenotype', 'HP:0002664', (134, 141)) ('PGLs', 'Phenotype', 'HP:0002668', (36, 40)) ('tumours', 'Disease', 'MESH:D009369', (134, 141)) ('PPGLs', 'Disease', (35, 40)) ('patients', 'Species', '9606', (47, 55)) ('catecholamines', 'Chemical', 'MESH:D002395', (230, 244)) ('PPGLs', 'Chemical', '-', (123, 128)) ('tumours', 'Disease', (134, 141)) ('paragangliomas', 'Phenotype', 'HP:0002668', (107, 121)) ('SDHX genes', 'Gene', (73, 83)) ('PGLs', 'Phenotype', 'HP:0002668', (124, 128)) ('Phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (84, 121)) ('tumours of the adrenal medulla', 'Phenotype', 'HP:0100642', (134, 164)) ('PPGLs', 'Chemical', '-', (35, 40)) ('variants', 'Var', (61, 69)) ('tumour', 'Phenotype', 'HP:0002664', (134, 140)) 112710 32688340 Variants of the SDHX (SDHA, -AF2, -B, -C, -D) genes are a frequent cause of familial PPGLs. ('SDHA', 'Gene', (22, 26)) ('cause', 'Reg', (67, 72)) ('familial PPGLs', 'Disease', (76, 90)) ('Variants', 'Var', (0, 8)) ('PPGLs', 'Chemical', '-', (85, 90)) ('SDHA', 'Gene', '6389', (22, 26)) ('SDH', 'Gene', '6390', (16, 19)) ('SDH', 'Gene', '6390', (22, 25)) ('PGLs', 'Phenotype', 'HP:0002668', (86, 90)) ('SDH', 'Gene', (16, 19)) ('SDH', 'Gene', (22, 25)) 112711 32688340 In this study from a single tertiary centre, we aimed to characterise the genotype-phenotype associations in patients diagnosed with germline variants in SDHX genes. ('variants', 'Var', (142, 150)) ('SDH', 'Gene', '6390', (154, 157)) ('SDH', 'Gene', (154, 157)) ('patients', 'Species', '9606', (109, 117)) 112713 32688340 The study cohort comprised all individuals (n = 59) diagnosed with a rare variant in SDHX during a 13-year period. ('a 13', 'Gene', '28888', (97, 101)) ('a 13', 'Gene', (97, 101)) ('SDH', 'Gene', (85, 88)) ('variant', 'Var', (74, 81)) ('SDH', 'Gene', '6390', (85, 88)) 112715 32688340 We found distinct differences in the clinical and histopathological characteristics between genetic variants in SDHB. ('SDHB', 'Gene', (112, 116)) ('SDHB', 'Gene', '6390', (112, 116)) ('differences', 'Reg', (18, 29)) ('genetic variants', 'Var', (92, 108)) 112716 32688340 We identified two SDHB variants with distinct phenotypical patterns. ('variants', 'Var', (23, 31)) ('SDHB', 'Gene', '6390', (18, 22)) ('SDHB', 'Gene', (18, 22)) 112717 32688340 Family screening for SDHB variants resulted in earlier detection of tumours in two families. ('tumour', 'Phenotype', 'HP:0002664', (68, 74)) ('tumours', 'Phenotype', 'HP:0002664', (68, 75)) ('SDHB', 'Gene', '6390', (21, 25)) ('tumours', 'Disease', 'MESH:D009369', (68, 75)) ('tumours', 'Disease', (68, 75)) ('SDHB', 'Gene', (21, 25)) ('variants', 'Var', (26, 34)) 112718 32688340 Patients with SDHA, SDHC and SDHD variants also had malignant phenotypes, underlining the necessity for a broad genetic screening of the proband. ('SDHD', 'Gene', '6392', (29, 33)) ('variants', 'Var', (34, 42)) ('SDHA', 'Gene', (14, 18)) ('SDHD', 'Gene', (29, 33)) ('SDHC', 'Gene', (20, 24)) ('SDHC', 'Gene', '6391', (20, 24)) ('Patients', 'Species', '9606', (0, 8)) ('SDHA', 'Gene', '6389', (14, 18)) 112719 32688340 Regular tumour screening of carriers of pathogenic variants may lead to an earlier diagnosis and expected better prognosis. ('tumour', 'Disease', (8, 14)) ('tumour', 'Phenotype', 'HP:0002664', (8, 14)) ('tumour', 'Disease', 'MESH:D009369', (8, 14)) ('variants', 'Var', (51, 59)) 112721 32688340 Phaeochromocytomas and paragangliomas (PPGLs: PCCs (MIM: 171300), PGL1 (MIM: 168000), PGL2 (MIM: 601650), PGL3 (MIM: 605373), PGL4 (MIM: 115310), PGL5 (MIM: 614165), PGL6 (MIM: 618464)) are tumours of the adrenal medulla and extra-adrenal sympathetic nervous system, respectively, that often secrete catecholamines. ('Phaeochromocytomas and paragangliomas', 'Disease', 'MESH:D010235', (0, 37)) ('PGL3', 'Gene', (106, 110)) ('PGL2', 'Gene', '54949', (86, 90)) ('paragangliomas', 'Phenotype', 'HP:0002668', (23, 37)) ('MIM', 'Var', (132, 135)) ('tumours of the adrenal medulla', 'Phenotype', 'HP:0100642', (190, 220)) ('PGL3', 'Gene', '6391', (106, 110)) ('PGL4', 'Gene', (126, 130)) ('PGL4', 'Gene', '6390', (126, 130)) ('PGL5', 'Gene', (146, 150)) ('PPGLs', 'Chemical', '-', (39, 44)) ('tumours', 'Disease', (190, 197)) ('tumour', 'Phenotype', 'HP:0002664', (190, 196)) ('PGL5', 'Gene', '6389', (146, 150)) ('tumours', 'Phenotype', 'HP:0002664', (190, 197)) ('tumours', 'Disease', 'MESH:D009369', (190, 197)) ('PGL2', 'Gene', (86, 90)) ('secrete catecholamines', 'MPA', (292, 314)) ('catecholamines', 'Chemical', 'MESH:D002395', (300, 314)) ('MIM: 605373', 'Var', (112, 123)) ('PGLs', 'Phenotype', 'HP:0002668', (40, 44)) 112724 32688340 Markers of poor prognosis in PPGLs have been identified in different studies, including tumour size >5 cm, vascular invasion, SDHB variants and norepinephrine secretion. ('tumour', 'Disease', 'MESH:D009369', (88, 94)) ('vascular invasion', 'CPA', (107, 124)) ('PPGLs', 'Gene', (29, 34)) ('tumour', 'Disease', (88, 94)) ('PPGLs', 'Chemical', '-', (29, 34)) ('PGLs', 'Phenotype', 'HP:0002668', (30, 34)) ('norepinephrine', 'Chemical', 'MESH:D009638', (144, 158)) ('variants', 'Var', (131, 139)) ('norepinephrine secretion', 'Disease', (144, 168)) ('SDHB', 'Gene', '6390', (126, 130)) ('tumour', 'Phenotype', 'HP:0002664', (88, 94)) ('SDHB', 'Gene', (126, 130)) 112729 32688340 Germline variants in succinate dehydrogenase (SDH)-A, -AF2, -B, -C, and -D (MIM: 600857; MIM: 613019; MIM: 185470; MIM: 602413; MIM: 602690) have been found to account for approximately half of the hereditary PPGLs and for up to 15% of all patients with PPGLs. ('succinate dehydrogenase (SDH)-A, -AF2, -B, -C, and -D', 'Gene', '6389;54949;6390;6391;6392', (21, 74)) ('account', 'Reg', (160, 167)) ('PGLs', 'Phenotype', 'HP:0002668', (255, 259)) ('PPGLs', 'Chemical', '-', (209, 214)) ('PPGLs', 'Chemical', '-', (254, 259)) ('MIM: 602690', 'Var', (128, 139)) ('PGLs', 'Phenotype', 'HP:0002668', (210, 214)) ('patients', 'Species', '9606', (240, 248)) ('variants', 'Var', (9, 17)) ('MIM', 'Var', (115, 118)) ('PPGLs', 'Disease', (209, 214)) 112731 32688340 A germline variant of SDHB is the best-known genetic predictor of malignancy as approximately 50% of tumours progress to metastatic disease. ('malignancy', 'Disease', 'MESH:D009369', (66, 76)) ('tumours', 'Disease', 'MESH:D009369', (101, 108)) ('germline variant', 'Var', (2, 18)) ('tumours', 'Disease', (101, 108)) ('SDHB', 'Gene', '6390', (22, 26)) ('malignancy', 'Disease', (66, 76)) ('SDHB', 'Gene', (22, 26)) ('metastatic disease', 'CPA', (121, 139)) ('progress', 'PosReg', (109, 117)) ('tumour', 'Phenotype', 'HP:0002664', (101, 107)) ('tumours', 'Phenotype', 'HP:0002664', (101, 108)) 112732 32688340 Two-thirds of malignant PPGLs, however, do not harbour SDHB variants and other predictive markers of poor prognosis have been investigated. ('SDHB', 'Gene', (55, 59)) ('PGLs', 'Phenotype', 'HP:0002668', (25, 29)) ('PPGLs', 'Chemical', '-', (24, 29)) ('SDHB', 'Gene', '6390', (55, 59)) ('variants', 'Var', (60, 68)) ('PPGLs', 'Disease', (24, 29)) 112735 32688340 To our knowledge, there is no previous systematic study of the genotype-phenotype associations in patients with solely germline variants in SDHX genes. ('variants', 'Var', (128, 136)) ('SDH', 'Gene', (140, 143)) ('SDH', 'Gene', '6390', (140, 143)) ('patients', 'Species', '9606', (98, 106)) 112736 32688340 In this study, we aim to characterise the possible associations between genotype on the one hand and the clinical and histopathological presentation on the other in 59 individuals diagnosed with germline variants in SDHX genes in the setting of a single tertiary referral centre. ('variants', 'Var', (204, 212)) ('SDH', 'Gene', '6390', (216, 219)) ('SDH', 'Gene', (216, 219)) 112737 32688340 The study cohort comprised all individuals diagnosed with a variant of one of the SDHX genes between 1 January 2006 and 1 March 2019 who were followed in the Department of Medical Endocrinology, Copenhagen University Hospital, Rigshospitalet. ('men', 'Species', '9606', (164, 167)) ('SDH', 'Gene', '6390', (82, 85)) ('variant', 'Var', (60, 67)) ('SDH', 'Gene', (82, 85)) 112738 32688340 All individuals with a proven variant in the SDHX genes (class 3, 4, or 5) were included. ('SDH', 'Gene', (45, 48)) ('variant', 'Var', (30, 37)) ('SDH', 'Gene', '6390', (45, 48)) 112751 32688340 Thus, a group of two SDHA variant positive patients, a group of SDHB variant positive patients (eight families (Family B1-B8) and four unrelated patients (Bx)), four patients with SDHC variants (two unrelated patients and two patients from the same family), and two unrelated patients with SDHD variants were identified. ('patients', 'Species', '9606', (145, 153)) ('variant', 'Var', (69, 76)) ('patients', 'Species', '9606', (276, 284)) ('SDHA', 'Gene', (21, 25)) ('SDHD', 'Gene', '6392', (290, 294)) ('SDHB', 'Gene', '6390', (64, 68)) ('patients', 'Species', '9606', (43, 51)) ('variant', 'Var', (26, 33)) ('SDHD', 'Gene', (290, 294)) ('SDHB', 'Gene', (64, 68)) ('SDHC', 'Gene', (180, 184)) ('patients', 'Species', '9606', (209, 217)) ('patients', 'Species', '9606', (226, 234)) ('SDHA', 'Gene', '6389', (21, 25)) ('SDHC', 'Gene', '6391', (180, 184)) ('patients', 'Species', '9606', (166, 174)) ('patients', 'Species', '9606', (86, 94)) 112752 32688340 For SDHA, SDHB, SDHC, and SDHD variants, the letters 'A', 'B', 'C', or 'D' were included in the patient identification (ID). ('SDHC', 'Gene', (16, 20)) ('SDHA', 'Gene', (4, 8)) ('variants', 'Var', (31, 39)) ('SDHC', 'Gene', '6391', (16, 20)) ('patient', 'Species', '9606', (96, 103)) ('SDHD', 'Gene', (26, 30)) ('SDHD', 'Gene', '6392', (26, 30)) ('SDHB', 'Gene', '6390', (10, 14)) ('SDHA', 'Gene', '6389', (4, 8)) ('SDHB', 'Gene', (10, 14)) 112753 32688340 To ensure patient anonymity, each patient within an SDHX positive family was given an arbitrary number and either the letter 'F' (female) or 'M' (male). ("'M'", 'Var', (141, 144)) ('SDH', 'Gene', '6390', (52, 55)) ('patient', 'Species', '9606', (10, 17)) ('patient', 'Species', '9606', (34, 41)) ('SDH', 'Gene', (52, 55)) 112755 32688340 The unrelated SDHB (Bx) group was compared to other SDHB families or family members with variants in the same exon(s) when possible. ('SDHB', 'Gene', (52, 56)) ('variants', 'Var', (89, 97)) ('SDHB', 'Gene', '6390', (14, 18)) ('SDHB', 'Gene', '6390', (52, 56)) ('SDHB', 'Gene', (14, 18)) 112758 32688340 In total, 59 individuals were diagnosed with an SDHX variant during a 13-year period. ('SDH', 'Gene', '6390', (48, 51)) ('variant', 'Var', (53, 60)) ('diagnosed', 'Reg', (30, 39)) ('a 13', 'Gene', (68, 72)) ('SDH', 'Gene', (48, 51)) ('a 13', 'Gene', '28888', (68, 72)) 112760 32688340 A total of 24 SDHX variant positive patients underwent surgery (Fig. ('SDH', 'Gene', (14, 17)) ('patients', 'Species', '9606', (36, 44)) ('SDH', 'Gene', '6390', (14, 17)) ('variant', 'Var', (19, 26)) 112761 32688340 There was no sex difference between the median age at tumour diagnosis of women (40.5 years (n = 14)) compared to men (45.5 years (n = 10), (P = 0.62)) or for the number of individuals with an SDHX variant (30 female, 29 male, P = 0.34) (Table 1). ('tumour', 'Disease', 'MESH:D009369', (54, 60)) ('women', 'Species', '9606', (74, 79)) ('variant', 'Var', (198, 205)) ('tumour', 'Disease', (54, 60)) ('men', 'Species', '9606', (114, 117)) ('SDH', 'Gene', '6390', (193, 196)) ('men', 'Species', '9606', (76, 79)) ('SDH', 'Gene', (193, 196)) ('tumour', 'Phenotype', 'HP:0002664', (54, 60)) 112762 32688340 Most patients were diagnosed with variants in the SDHB gene (51/59). ('variants', 'Var', (34, 42)) ('patients', 'Species', '9606', (5, 13)) ('SDHB', 'Gene', (50, 54)) ('diagnosed', 'Reg', (19, 28)) ('SDHB', 'Gene', '6390', (50, 54)) 112763 32688340 Only two, four, and two individuals were positive for variants in SDHA, SDHC, and SDHD, respectively, while no patients were positive for SDHAF2. ('SDHA', 'Gene', (138, 142)) ('SDHA', 'Gene', (66, 70)) ('SDHAF2', 'Gene', (138, 144)) ('positive', 'Reg', (41, 49)) ('SDHD', 'Gene', (82, 86)) ('SDHAF2', 'Gene', '54949', (138, 144)) ('patients', 'Species', '9606', (111, 119)) ('SDHD', 'Gene', '6392', (82, 86)) ('SDHC', 'Gene', (72, 76)) ('variants', 'Var', (54, 62)) ('SDHC', 'Gene', '6391', (72, 76)) ('SDHA', 'Gene', '6389', (138, 142)) ('SDHA', 'Gene', '6389', (66, 70)) 112766 32688340 Seventeen out of 51 SDHB variant patients were diagnosed with PPGLs. ('PPGLs', 'Disease', (62, 67)) ('diagnosed', 'Reg', (47, 56)) ('patients', 'Species', '9606', (33, 41)) ('SDHB', 'Gene', '6390', (20, 24)) ('variant', 'Var', (25, 32)) ('PPGLs', 'Chemical', '-', (62, 67)) ('PGLs', 'Phenotype', 'HP:0002668', (63, 67)) ('SDHB', 'Gene', (20, 24)) 112767 32688340 One of the SDHA variant positive patients (n = 2) was diagnosed with a PGL. ('SDHA', 'Gene', '6389', (11, 15)) ('SDHA', 'Gene', (11, 15)) ('patients', 'Species', '9606', (33, 41)) ('variant', 'Var', (16, 23)) 112769 32688340 Three patients were diagnosed with renal cell carcinoma, two with an SDHB variant and one with a variant of the SDHD gene (Table 1). ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (35, 55)) ('SDHB', 'Gene', (69, 73)) ('carcinoma', 'Phenotype', 'HP:0030731', (46, 55)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (35, 55)) ('variant', 'Var', (74, 81)) ('diagnosed', 'Reg', (20, 29)) ('SDHD', 'Gene', (112, 116)) ('SDHD', 'Gene', '6392', (112, 116)) ('patients', 'Species', '9606', (6, 14)) ('SDHB', 'Gene', '6390', (69, 73)) ('renal cell carcinoma', 'Disease', (35, 55)) 112772 32688340 Three family members with a class 4 or 5 variant that had been treated for tumours earlier in life and were diagnosed with the genetic variant many years later during family screening. ('tumours', 'Disease', 'MESH:D009369', (75, 82)) ('tumours', 'Disease', (75, 82)) ('variant', 'Var', (41, 48)) ('tumours', 'Phenotype', 'HP:0002664', (75, 82)) ('tumour', 'Phenotype', 'HP:0002664', (75, 81)) 112773 32688340 Thirty-four family members with a class 4 or 5 variant have been followed for an average time of 48.8 months (range: 11 days to 136 months) without tumour detection. ('tumour', 'Disease', (148, 154)) ('tumour', 'Disease', 'MESH:D009369', (148, 154)) ('variant', 'Var', (47, 54)) ('tumour', 'Phenotype', 'HP:0002664', (148, 154)) 112774 32688340 Comparison of patients with class 4 and 5 variants (n = 19; 1 SDHA, 15 SDHB and 3 SDHC) showed that 10 of 19 developed metastatic disease and that the age at tumour diagnosis was related to the genotype with family B1 presenting with tumours at a lower age than family B3 (Fig. ('SDHC', 'Gene', '6391', (82, 86)) ('SDHB', 'Gene', '6390', (71, 75)) ('metastatic disease', 'CPA', (119, 137)) ('tumours', 'Phenotype', 'HP:0002664', (234, 241)) ('patients', 'Species', '9606', (14, 22)) ('tumours', 'Disease', 'MESH:D009369', (234, 241)) ('developed', 'Reg', (109, 118)) ('variants', 'Var', (42, 50)) ('tumour', 'Phenotype', 'HP:0002664', (234, 240)) ('tumour', 'Disease', 'MESH:D009369', (234, 240)) ('SDHB', 'Gene', (71, 75)) ('tumour', 'Disease', (234, 240)) ('SDHC', 'Gene', (82, 86)) ('SDHA', 'Gene', (62, 66)) ('SDHA', 'Gene', '6389', (62, 66)) ('tumour', 'Phenotype', 'HP:0002664', (158, 164)) ('tumour', 'Disease', 'MESH:D009369', (158, 164)) ('tumour', 'Disease', (158, 164)) ('tumours', 'Disease', (234, 241)) 112775 32688340 The patients with class 4 and 5 variants in SDHB presented mostly with PGLs; only one patient had both a PCC and a PGL. ('SDHB', 'Gene', '6390', (44, 48)) ('PGLs', 'Phenotype', 'HP:0002668', (71, 75)) ('patient', 'Species', '9606', (4, 11)) ('SDHB', 'Gene', (44, 48)) ('patient', 'Species', '9606', (86, 93)) ('variants', 'Var', (32, 40)) ('presented', 'Reg', (49, 58)) ('patients', 'Species', '9606', (4, 12)) ('PGLs', 'Disease', (71, 75)) 112777 32688340 Within the SDHB variant group, two genetic variants showed a specific age distribution of first tumour diagnosis. ('SDHB', 'Gene', (11, 15)) ('variant', 'Var', (16, 23)) ('tumour', 'Phenotype', 'HP:0002664', (96, 102)) ('tumour', 'Disease', 'MESH:D009369', (96, 102)) ('SDHB', 'Gene', '6390', (11, 15)) ('tumour', 'Disease', (96, 102)) 112779 32688340 Family B4 had the same variant as family B3 and the patients were diagnosed with either renal cell carcinoma confined to the kidney or metastatic PGL at the age of 43 and 50 years. ('metastatic PGL', 'Disease', (135, 149)) ('variant', 'Var', (23, 30)) ('renal cell carcinoma', 'Disease', (88, 108)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (88, 108)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (88, 108)) ('carcinoma', 'Phenotype', 'HP:0030731', (99, 108)) ('diagnosed', 'Reg', (66, 75)) ('patients', 'Species', '9606', (52, 60)) 112780 32688340 All patients with SDHC variants were diagnosed after the age of 50 years. ('variants', 'Var', (23, 31)) ('SDHC', 'Gene', '6391', (18, 22)) ('SDHC', 'Gene', (18, 22)) ('patients', 'Species', '9606', (4, 12)) 112783 32688340 Patient with variants in SDHB came from eight families and four were unrelated (Supplementary material). ('variants', 'Var', (13, 21)) ('men', 'Species', '9606', (86, 89)) ('SDHB', 'Gene', '6390', (25, 29)) ('SDHB', 'Gene', (25, 29)) ('Patient', 'Species', '9606', (0, 7)) 112785 32688340 In family B1 (class 5, deletion of exon 4 and 5 in SDHB), four members developed PPGLs. ('PGLs', 'Phenotype', 'HP:0002668', (82, 86)) ('deletion', 'Var', (23, 31)) ('PPGLs', 'Chemical', '-', (81, 86)) ('SDHB', 'Gene', '6390', (51, 55)) ('SDHB', 'Gene', (51, 55)) 112786 32688340 The tumours had different markers of poor prognosis, including metastatic disease, nuclear pleomorphism, capsular invasion, mitotic figures >3/10 HPF, extension into adipose tissue and Ki-67% of 15% in one case (Supplementary material). ('mitotic figures', 'CPA', (124, 139)) ('capsular invasion', 'CPA', (105, 122)) ('tumour', 'Phenotype', 'HP:0002664', (4, 10)) ('tumours', 'Phenotype', 'HP:0002664', (4, 11)) ('nuclear pleomorphism', 'CPA', (83, 103)) ('men', 'Species', '9606', (218, 221)) ('extension', 'CPA', (151, 160)) ('tumours', 'Disease', 'MESH:D009369', (4, 11)) ('Ki-67%', 'Var', (185, 191)) ('metastatic disease', 'Disease', (63, 81)) ('tumours', 'Disease', (4, 11)) 112790 32688340 The homozygous proband (child of consanguineous parents) in family B2 (class 5 variant in exon 8, c.769C>G, p.Leu257Val) died at the age of 25 months from a severe respiratory infection with multi-organ failure. ('respiratory infection', 'Disease', 'MESH:D012141', (164, 185)) ('respiratory infection', 'Phenotype', 'HP:0011947', (164, 185)) ('child', 'Species', '9606', (24, 29)) ('p.Leu257Val', 'Var', (108, 119)) ('c.769C>G', 'Mutation', 'rs778643158', (98, 106)) ('multi-organ failure', 'Disease', (191, 210)) ('multi-organ failure', 'Disease', 'MESH:D009102', (191, 210)) ('c.769C>G', 'Var', (98, 106)) ('p.Leu257Val', 'Mutation', 'rs761350633', (108, 119)) ('respiratory infection', 'Disease', (164, 185)) 112792 32688340 In family B3 (class 4 variant in exon 1, c.3G>A, p.Met1? ('c.3G>A', 'Mutation', 'rs370173494', (41, 47)) ('p.Met1?', 'SUBSTITUTION', 'None', (49, 56)) ('p.Met1?', 'Var', (49, 56)) ('c.3G>A', 'Var', (41, 47)) 112795 32688340 The family members with PPGLs displayed markers of poor prognosis including metastatic disease and markers included in the PASS (Supplementary material) and the variant might be associated with a high risk of tumour development in adults (five out of nine family members) (Table 2). ('men', 'Species', '9606', (223, 226)) ('tumour', 'Phenotype', 'HP:0002664', (209, 215)) ('associated', 'Reg', (178, 188)) ('tumour', 'Disease', 'MESH:D009369', (209, 215)) ('men', 'Species', '9606', (135, 138)) ('PGLs', 'Phenotype', 'HP:0002668', (25, 29)) ('PPGLs', 'Chemical', '-', (24, 29)) ('variant', 'Var', (161, 168)) ('tumour', 'Disease', (209, 215)) ('metastatic disease', 'CPA', (76, 94)) ('PPGLs', 'Gene', (24, 29)) 112796 32688340 Family B4 carried the same variant as family B3 and two family members were diagnosed with tumours (M1, M2) (Supplementary material) and the PGL was disseminated at diagnosis. ('tumours', 'Phenotype', 'HP:0002664', (91, 98)) ('tumours', 'Disease', 'MESH:D009369', (91, 98)) ('tumours', 'Disease', (91, 98)) ('men', 'Species', '9606', (115, 118)) ('variant', 'Var', (27, 34)) ('tumour', 'Phenotype', 'HP:0002664', (91, 97)) 112797 32688340 One female in family B7 (class 5 variant in exon 7, c.653G>A, p.Trp218*) was diagnosed at the age of 39 years, the other carrier (M1) has until now (84 years) not been diagnosed with PPGLs. ('p.Trp218*', 'Mutation', 'p.W218*', (62, 71)) ('p.Trp218*', 'Var', (62, 71)) ('c.653G>A', 'Var', (52, 60)) ('c.653G>A', 'Mutation', 'rs1242417575', (52, 60)) ('PGLs', 'Phenotype', 'HP:0002668', (184, 188)) ('PPGLs', 'Chemical', '-', (183, 188)) 112800 32688340 In family B5, the tumour metastases also had a higher Ki-67% >1 (Supplementary material). ('tumour metastases', 'Disease', 'MESH:D009362', (18, 35)) ('Ki-67% >1', 'Var', (54, 63)) ('tumour', 'Phenotype', 'HP:0002664', (18, 24)) ('men', 'Species', '9606', (71, 74)) ('tumour metastases', 'Disease', (18, 35)) 112801 32688340 The proband (F1) of family B8 was diagnosed with a class 5 variant (c.683_684del, p.Glu228Glyfs*27) in exon 7. ('p.Glu228Glyfs*27', 'Mutation', 'rs762812025', (82, 98)) ('c.683_684del', 'Var', (68, 80)) ('p.Glu228Glyfs*27', 'Var', (82, 98)) ('c.683_684del', 'Mutation', 'rs762812025', (68, 80)) 112804 32688340 In total, seven patients with class 4 and 5 SDHB variants developed metastatic disease, the highest number being found in family 1 (Table 2). ('SDHB', 'Gene', '6390', (44, 48)) ('variants', 'Var', (49, 57)) ('patients', 'Species', '9606', (16, 24)) ('SDHB', 'Gene', (44, 48)) ('metastatic disease', 'CPA', (68, 86)) ('developed', 'Reg', (58, 67)) 112805 32688340 None of the patients with the class 3 SDHB variants developed metastatic disease. ('patients', 'Species', '9606', (12, 20)) ('metastatic disease', 'CPA', (62, 80)) ('SDHB', 'Gene', '6390', (38, 42)) ('variants', 'Var', (43, 51)) ('SDHB', 'Gene', (38, 42)) 112806 32688340 Tumour types and clinical symptoms of hormone secretion in patients with an SDHB variant are depicted in Table 3. ('SDHB', 'Gene', '6390', (76, 80)) ('SDHB', 'Gene', (76, 80)) ('variant', 'Var', (81, 88)) ('patients', 'Species', '9606', (59, 67)) ('Tumour', 'Phenotype', 'HP:0002664', (0, 6)) 112808 32688340 A 19-year-old male with an SDHA variant (deletion in exon 6/intron 6) had two metastatic PPGLs which could also be interpreted as synchronous tumour events. ('SDHA', 'Gene', (27, 31)) ('synchronous tumour', 'Disease', 'MESH:D009378', (130, 148)) ('A 19', 'Gene', '28921', (0, 4)) ('PPGLs', 'Chemical', '-', (89, 94)) ('deletion in', 'Var', (41, 52)) ('A 19', 'Gene', (0, 4)) ('synchronous tumour', 'Disease', (130, 148)) ('tumour', 'Phenotype', 'HP:0002664', (142, 148)) ('PGLs', 'Phenotype', 'HP:0002668', (90, 94)) ('SDHA', 'Gene', '6389', (27, 31)) 112810 32688340 All patients with an SDHC variant (1 F, 3 M) developed PGLs, hereof two with metastatic disease. ('SDHC', 'Gene', (21, 25)) ('variant', 'Var', (26, 33)) ('PGLs', 'Disease', (55, 59)) ('SDHC', 'Gene', '6391', (21, 25)) ('developed', 'Reg', (45, 54)) ('PGLs', 'Phenotype', 'HP:0002668', (55, 59)) ('patients', 'Species', '9606', (4, 12)) 112816 32688340 To our knowledge, this is the first systematic study of a single tertiary centre cohort of 59 individuals with germline SDHX variants describing the associations between the genotype on the one hand and both the clinical and histopathological phenotype on the other. ('SDH', 'Gene', '6390', (120, 123)) ('associations', 'Interaction', (149, 161)) ('SDH', 'Gene', (120, 123)) ('variants', 'Var', (125, 133)) 112817 32688340 SDHB variants were the most frequent, which is in accordance with previous reports. ('frequent', 'Reg', (28, 36)) ('SDHB', 'Gene', '6390', (0, 4)) ('variants', 'Var', (5, 13)) ('SDHB', 'Gene', (0, 4)) 112818 32688340 Two patients were diagnosed with a variant in SDHA and four patients were diagnosed with SDHC variants, which corroborates previous findings that these are much less common. ('SDHA', 'Gene', '6389', (46, 50)) ('SDHC', 'Gene', (89, 93)) ('patients', 'Species', '9606', (60, 68)) ('SDHC', 'Gene', '6391', (89, 93)) ('diagnosed', 'Reg', (18, 27)) ('patients', 'Species', '9606', (4, 12)) ('SDHA', 'Gene', (46, 50)) ('variant', 'Var', (35, 42)) 112819 32688340 Only two individuals were diagnosed with SDHD variants, although these have been described as more common in other populations. ('SDHD', 'Gene', '6392', (41, 45)) ('variants', 'Var', (46, 54)) ('SDHD', 'Gene', (41, 45)) 112820 32688340 Our patient cohort of SDHX variant positive individuals consisted of almost equal numbers of females (30/59) and males (29/59) which was expected from the autosomal dominant heritance with incomplete penetrance of SDHA, -B, -C, -D or -AF2 variants located at chromosomes 5, 1, 1, 11, and 11, respectively. ('SDH', 'Gene', (214, 217)) ('patient', 'Species', '9606', (4, 11)) ('SDH', 'Gene', '6390', (22, 25)) ('SDHA, -B, -C, -D or -AF2', 'Gene', '6389', (214, 238)) ('SDH', 'Gene', '6390', (214, 217)) ('SDH', 'Gene', (22, 25)) ('variant', 'Var', (27, 34)) ('variants', 'Var', (239, 247)) 112822 32688340 The SDHA positive family (n = 2) has, to our knowledge, a novel class 4 variant not previously reported. ('variant', 'Var', (72, 79)) ('SDHA', 'Gene', '6389', (4, 8)) ('SDHA', 'Gene', (4, 8)) 112823 32688340 SDHB variants are common and have a high penetrance compared to other SDHX variants resulting in development of abdominal PGLs, HNPGLs, and SDH deficient renal carcinomas. ('carcinoma', 'Phenotype', 'HP:0030731', (160, 169)) ('SDH deficient renal carcinomas', 'Disease', (140, 170)) ('HNPGLs', 'Disease', (128, 134)) ('SDH', 'Gene', (140, 143)) ('abdominal PGLs', 'Disease', (112, 126)) ('variants', 'Var', (75, 83)) ('SDHB', 'Gene', (0, 4)) ('SDH', 'Gene', '6390', (0, 3)) ('men', 'Species', '9606', (104, 107)) ('renal carcinoma', 'Phenotype', 'HP:0005584', (154, 169)) ('carcinomas', 'Phenotype', 'HP:0030731', (160, 170)) ('renal carcinomas', 'Phenotype', 'HP:0005584', (154, 170)) ('SDH', 'Gene', (0, 3)) ('SDH deficient renal carcinomas', 'Disease', 'MESH:C538614', (140, 170)) ('SDH', 'Gene', '6390', (70, 73)) ('SDH', 'Gene', '6390', (140, 143)) ('PGLs', 'Phenotype', 'HP:0002668', (130, 134)) ('PGLs', 'Phenotype', 'HP:0002668', (122, 126)) ('SDHB', 'Gene', '6390', (0, 4)) ('variants', 'Var', (5, 13)) ('SDH', 'Gene', (70, 73)) 112824 32688340 The class 4 and 5 variants in our cohort predisposed to metastatic or non-metastatic PGLs and renal cell carcinomas without local invasion or metastases which correlated with previous findings. ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (94, 114)) ('predisposed', 'Reg', (41, 52)) ('metastases', 'Disease', (142, 152)) ('metastases', 'Disease', 'MESH:D009362', (142, 152)) ('variants', 'Var', (18, 26)) ('PGLs and renal cell carcinomas', 'Disease', 'MESH:C538614', (85, 115)) ('PGLs', 'Phenotype', 'HP:0002668', (85, 89)) ('carcinoma', 'Phenotype', 'HP:0030731', (105, 114)) ('carcinomas', 'Phenotype', 'HP:0030731', (105, 115)) ('metastatic', 'Disease', (56, 66)) ('renal cell carcinomas', 'Phenotype', 'HP:0005584', (94, 115)) 112825 32688340 In family B2, no heterozygous individual with a class 5 missense variant (c.769C>G, p.Leu257Val) in exon 8 of the SDHB gene has as yet developed PPGLs. ('p.Leu257Val', 'Mutation', 'rs761350633', (84, 95)) ('SDHB', 'Gene', '6390', (114, 118)) ('c.769C>G', 'Mutation', 'rs778643158', (74, 82)) ('SDHB', 'Gene', (114, 118)) ('c.769C>G', 'Var', (74, 82)) ('p.Leu257Val', 'Var', (84, 95)) ('PGLs', 'Phenotype', 'HP:0002668', (146, 150)) ('PPGLs', 'Chemical', '-', (145, 150)) 112831 32688340 Families B3 and B4 carry the same start loss variant (class 4 variant in exon 1 of SDHB, c.3G>A, p.Met?) ('c.3G>A', 'Mutation', 'rs370173494', (89, 95)) ('SDHB', 'Gene', (83, 87)) ('p.Met', 'Var', (97, 102)) ('SDHB', 'Gene', '6390', (83, 87)) ('c.3G>A', 'Var', (89, 95)) 112833 32688340 All four of our SDHC variant individuals developed tumours (HNPGLs and PPGLs), two with proof of metastasis and two showed catecholamine-related symptoms, which, according to the literature, are two very rare findings. ('SDHC', 'Gene', (16, 20)) ('catecholamine', 'Chemical', 'MESH:D002395', (123, 136)) ('PPGLs', 'Chemical', '-', (71, 76)) ('SDHC', 'Gene', '6391', (16, 20)) ('tumour', 'Phenotype', 'HP:0002664', (51, 57)) ('developed', 'Reg', (41, 50)) ('PGLs', 'Phenotype', 'HP:0002668', (62, 66)) ('variant', 'Var', (21, 28)) ('tumours', 'Phenotype', 'HP:0002664', (51, 58)) ('tumours', 'Disease', 'MESH:D009369', (51, 58)) ('PGLs', 'Phenotype', 'HP:0002668', (72, 76)) ('tumours', 'Disease', (51, 58)) 112834 32688340 One of the individuals with proof of metastasis had a class 3 variant further underlining that the tumour classification alone cannot predict clinical the phenotype. ('tumour', 'Disease', (99, 105)) ('tumour', 'Phenotype', 'HP:0002664', (99, 105)) ('tumour', 'Disease', 'MESH:D009369', (99, 105)) ('variant', 'Var', (62, 69)) 112835 32688340 Larger studies of the genotype-phenotype associations are needed to elucidate how the different genetic variants in PPGLs may be stratified into prognostic risk categories. ('PPGLs', 'Chemical', '-', (116, 121)) ('PPGLs', 'Gene', (116, 121)) ('variants', 'Var', (104, 112)) ('PGLs', 'Phenotype', 'HP:0002668', (117, 121)) 112836 32688340 Furthermore, a study suggested that the variant type (truncating vs missense) in SDHD had an important clinical impact. ('SDHD', 'Gene', (81, 85)) ('SDHD', 'Gene', '6392', (81, 85)) ('missense', 'Var', (68, 76)) 112837 32688340 Variants in the SDHD gene usually predispose to multiple HNPGLs and less often PPGLs. ('Variants', 'Var', (0, 8)) ('PPGLs', 'Disease', (79, 84)) ('SDHD', 'Gene', '6392', (16, 20)) ('PPGLs', 'Chemical', '-', (79, 84)) ('SDHD', 'Gene', (16, 20)) ('PGLs', 'Phenotype', 'HP:0002668', (59, 63)) ('multiple HNPGLs', 'Disease', (48, 63)) ('predispose', 'Reg', (34, 44)) ('PGLs', 'Phenotype', 'HP:0002668', (80, 84)) 112839 32688340 According to the literature, only one previous case of renal cell carcinoma has been reported in a patient with an SDHD variant. ('SDHD', 'Gene', '6392', (115, 119)) ('patient', 'Species', '9606', (99, 106)) ('carcinoma', 'Phenotype', 'HP:0030731', (66, 75)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (55, 75)) ('SDHD', 'Gene', (115, 119)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (55, 75)) ('variant', 'Var', (120, 127)) ('renal cell carcinoma', 'Disease', (55, 75)) 112842 32688340 It has previously been shown that the distribution of RET variants in Denmark differs from other populations, possibly due to a founder effect, and that the same could be the case for SDHX variants, as other countries have shown differences in clinical presentation of SDHX mutations. ('SDH', 'Gene', '6390', (269, 272)) ('RET', 'Gene', (54, 57)) ('variants', 'Var', (58, 66)) ('RET', 'Gene', '5979', (54, 57)) ('SDH', 'Gene', '6390', (184, 187)) ('SDH', 'Gene', (269, 272)) ('SDH', 'Gene', (184, 187)) 112847 32688340 Family screening for SDHB variants allowed an earlier detection of smaller tumours with better prognosis in one family (B1) and detection of tumours at the first screening in another (B3). ('tumours', 'Disease', (141, 148)) ('tumours', 'Disease', 'MESH:D009369', (75, 82)) ('tumours', 'Disease', (75, 82)) ('tumour', 'Phenotype', 'HP:0002664', (141, 147)) ('SDHB', 'Gene', '6390', (21, 25)) ('tumours', 'Phenotype', 'HP:0002664', (141, 148)) ('tumours', 'Disease', 'MESH:D009369', (141, 148)) ('SDHB', 'Gene', (21, 25)) ('tumours', 'Phenotype', 'HP:0002664', (75, 82)) ('tumour', 'Phenotype', 'HP:0002664', (75, 81)) ('variants', 'Var', (26, 34)) 112849 32688340 Within our cohort, two SDHB variants (a deletion of exon 4 and 5 and c.3G>A, p.Met1? ('p.Met1?', 'SUBSTITUTION', 'None', (77, 84)) ('c.3G>A', 'Var', (69, 75)) ('SDHB', 'Gene', '6390', (23, 27)) ('c.3G>A', 'Mutation', 'rs370173494', (69, 75)) ('SDHB', 'Gene', (23, 27)) ('p.Met1?', 'Var', (77, 84)) 112850 32688340 The SDHA, SDHC and SDHD patients in our cohort included malignant phenotypes, underlining the necessity to screen for all SDHX variants and, if positive, we recommend family screening to improve early tumour detection and thereby better prognosis. ('SDH', 'Gene', '6390', (10, 13)) ('SDHD', 'Gene', (19, 23)) ('SDH', 'Gene', (4, 7)) ('men', 'Species', '9606', (162, 165)) ('SDHC', 'Gene', '6391', (10, 14)) ('SDHA', 'Gene', '6389', (4, 8)) ('SDH', 'Gene', (19, 22)) ('SDH', 'Gene', (122, 125)) ('SDH', 'Gene', (10, 13)) ('SDH', 'Gene', '6390', (19, 22)) ('tumour', 'Phenotype', 'HP:0002664', (201, 207)) ('tumour', 'Disease', 'MESH:D009369', (201, 207)) ('variants', 'Var', (127, 135)) ('tumour', 'Disease', (201, 207)) ('SDHC', 'Gene', (10, 14)) ('included', 'Reg', (47, 55)) ('SDH', 'Gene', '6390', (4, 7)) ('SDHA', 'Gene', (4, 8)) ('SDHD', 'Gene', '6392', (19, 23)) ('patients', 'Species', '9606', (24, 32)) ('SDH', 'Gene', '6390', (122, 125)) 112878 32489750 Certain genetic mutations, such as SDHB, confer a higher risk for malignancy and recurrence, but testing is expensive and does not predict all cases, such as ours . ('malignancy', 'Disease', 'MESH:D009369', (66, 76)) ('SDHB', 'Gene', (35, 39)) ('recurrence', 'CPA', (81, 91)) ('mutations', 'Var', (16, 25)) ('malignancy', 'Disease', (66, 76)) ('SDHB', 'Gene', '6390', (35, 39)) 112882 32489750 However, the patient did not test for any genetic mutations that confer a higher risk, especially the SDHB mutation for which she tested negative. ('patient', 'Species', '9606', (13, 20)) ('SDHB', 'Gene', '6390', (102, 106)) ('mutation', 'Var', (107, 115)) ('SDHB', 'Gene', (102, 106)) 112920 32014052 Legius syndrome is an autosomal dominant disorder caused by the loss-of-function SPRED1 mutations. ('Legius syndrome', 'Disease', (0, 15)) ('SPRED1', 'Gene', '161742', (81, 87)) ('SPRED1', 'Gene', (81, 87)) ('autosomal dominant disorder', 'Disease', 'MESH:D030342', (22, 49)) ('mutations', 'Var', (88, 97)) ('autosomal dominant disorder', 'Disease', (22, 49)) ('Legius syndrome', 'Disease', 'MESH:C548032', (0, 15)) ('loss-of-function', 'NegReg', (64, 80)) 112927 32014052 A vast number of different pathogenic NF1 mutations have been described and molecular testing with high sensitivity is currently clinically available. ('NF1', 'Disease', 'MESH:D009456', (38, 41)) ('NF1', 'Disease', (38, 41)) ('NF', 'Phenotype', 'HP:0001067', (38, 40)) ('mutations', 'Var', (42, 51)) ('pathogenic', 'Reg', (27, 37)) 112928 32014052 It is noteworthy, however, that a specific NF1 mutation does not predict the severity or complications of the disease. ('NF1', 'Disease', (43, 46)) ('NF', 'Phenotype', 'HP:0001067', (43, 45)) ('mutation', 'Var', (47, 55)) ('NF1', 'Disease', 'MESH:D009456', (43, 46)) 112929 32014052 Indeed, no straightforward genotype-phenotype correlations have been identified for patients with intragenic NF1 mutations with a few reported exceptions. ('NF1', 'Disease', 'MESH:D009456', (109, 112)) ('NF1', 'Disease', (109, 112)) ('NF', 'Phenotype', 'HP:0001067', (109, 111)) ('patients', 'Species', '9606', (84, 92)) ('mutations', 'Var', (113, 122)) 112930 32014052 In 5-10% of patients, NF1 results from microdeletions that encompass the entire NF1 gene and a variable number of flanking genes. ('patients', 'Species', '9606', (12, 20)) ('NF', 'Phenotype', 'HP:0001067', (22, 24)) ('results from', 'Reg', (26, 38)) ('microdeletions', 'Var', (39, 53)) ('NF', 'Phenotype', 'HP:0001067', (80, 82)) ('NF1', 'Disease', 'MESH:D009456', (80, 83)) ('NF1', 'Disease', 'MESH:D009456', (22, 25)) ('NF1', 'Disease', (80, 83)) ('NF1', 'Disease', (22, 25)) 112931 32014052 These large NF1 locus deletions have been associated with a more severe phenotype including developing neurofibromas at an earlier age, having a lower mean IQ, abnormal facial features, and an elevated risk for malignant peripheral nerve sheath tumors (MPNST). ('neurofibromas', 'Disease', 'MESH:D009455', (103, 116)) ('MPNST', 'Disease', (253, 258)) ('deletions', 'Var', (22, 31)) ('tumor', 'Phenotype', 'HP:0002664', (245, 250)) ('malignant peripheral nerve sheath tumors', 'Disease', 'MESH:D009442', (211, 251)) ('NF1', 'Disease', (12, 15)) ('tumors', 'Phenotype', 'HP:0002664', (245, 251)) ('MPNST', 'Phenotype', 'HP:0100697', (253, 258)) ('neurofibroma', 'Phenotype', 'HP:0001067', (103, 115)) ('lower', 'NegReg', (145, 150)) ('neurofibromas', 'Disease', (103, 116)) ('NF', 'Phenotype', 'HP:0001067', (12, 14)) ('malignant peripheral nerve sheath tumors', 'Phenotype', 'HP:0100697', (211, 251)) ('NF1', 'Disease', 'MESH:D009456', (12, 15)) ('associated', 'Reg', (42, 52)) ('abnormal facial', 'Phenotype', 'HP:0000271', (160, 175)) ('MPNST', 'Disease', 'MESH:D009442', (253, 258)) ('malignant peripheral nerve sheath tumors', 'Disease', (211, 251)) ('neurofibromas', 'Phenotype', 'HP:0001067', (103, 116)) 112933 32014052 While traditional molecular analysis methods (using cDNA and/or DNA Sanger sequencing and copy number alteration studies) were able to identify around 95% of NF1 gene mutation s, a new targeted next-generation sequencing of NF1 and SPRED1 using a multiplex PCR approach was recently introduced with a sensitivity up to 98.5%. ('SPRED1', 'Gene', (232, 238)) ('NF1', 'Disease', 'MESH:D009456', (158, 161)) ('NF1', 'Disease', (158, 161)) ('NF', 'Phenotype', 'HP:0001067', (158, 160)) ('mutation s', 'Var', (167, 177)) ('NF1', 'Disease', 'MESH:D009456', (224, 227)) ('NF1', 'Disease', (224, 227)) ('NF', 'Phenotype', 'HP:0001067', (224, 226)) ('SPRED1', 'Gene', '161742', (232, 238)) 112947 32014052 Once the causative NF1 mutation has been identified in the parent, prenatal and pre-implantation genetic testing can be offered. ('NF1', 'Disease', 'MESH:D009456', (19, 22)) ('NF1', 'Disease', (19, 22)) ('NF', 'Phenotype', 'HP:0001067', (19, 21)) ('mutation', 'Var', (23, 31)) 113068 32014052 Clinical trials assessing the use of mTOR and MEK inhibitors for the treatment of optic pathway gliomas are currently in progress (NCT01158651 and NCT02285439). ('NCT01158651', 'Var', (131, 142)) ('glioma', 'Phenotype', 'HP:0009733', (96, 102)) ('MEK', 'Gene', (46, 49)) ('mTOR', 'Gene', (37, 41)) ('men', 'Species', '9606', (74, 77)) ('optic pathway gliomas', 'Disease', 'MESH:D020339', (82, 103)) ('mTOR', 'Gene', '2475', (37, 41)) ('optic pathway gliomas', 'Disease', (82, 103)) ('gliomas', 'Phenotype', 'HP:0009733', (96, 103)) ('MEK', 'Gene', '5609', (46, 49)) 113079 32014052 Patients with sphenoid wing dysplasia can also develop pulsating exophthalmus without visual loss; and absent sphenoid wing can lead to herniation of the temporal lobe into the orbit. ('visual loss', 'Phenotype', 'HP:0000572', (86, 97)) ('visual loss', 'Disease', (86, 97)) ('sphenoid wing dysplasia', 'Disease', (14, 37)) ('herniation', 'CPA', (136, 146)) ('Patients', 'Species', '9606', (0, 8)) ('sphenoid wing dysplasia', 'Disease', 'MESH:D008579', (14, 37)) ('pulsating exophthalmus', 'Disease', (55, 77)) ('absent', 'Var', (103, 109)) ('visual loss', 'Disease', 'MESH:D014786', (86, 97)) ('develop', 'PosReg', (47, 54)) ('lead to', 'Reg', (128, 135)) 113103 32014052 It has been suggested that Vitamin D deficiency contributes to osteoporosis in NF1. ('osteoporosis', 'Disease', 'MESH:D010024', (63, 75)) ('osteoporosis', 'Disease', (63, 75)) ('Vitamin D', 'Chemical', 'MESH:D014807', (27, 36)) ('NF1', 'Disease', 'MESH:D009456', (79, 82)) ('osteoporosis', 'Phenotype', 'HP:0000939', (63, 75)) ('NF1', 'Disease', (79, 82)) ('NF', 'Phenotype', 'HP:0001067', (79, 81)) ('Vitamin D deficiency', 'Phenotype', 'HP:0100512', (27, 47)) ('Vitamin', 'Protein', (27, 34)) ('deficiency', 'Var', (37, 47)) 113286 32014052 Segmental neurofibromatosis is a rare variant of NF1 (estimated prevalence between 0.0014 and 0.002%) characterized by neurofibromas and/or cafe-au-lait macules localized to one body segment with no crossing of the midline and no family history (since it results from a post-zygotic NF1 mutation leading to somatic mosaicism). ('neurofibroma', 'Phenotype', 'HP:0001067', (10, 22)) ('NF1', 'Disease', 'MESH:D009456', (49, 52)) ('men', 'Species', '9606', (186, 189)) ('neurofibroma', 'Phenotype', 'HP:0001067', (119, 131)) ('neurofibromas', 'Phenotype', 'HP:0001067', (119, 132)) ('cafe-au-lait macules', 'Phenotype', 'HP:0000957', (140, 160)) ('neurofibromas', 'Disease', 'MESH:D009455', (119, 132)) ('macules', 'Phenotype', 'HP:0012733', (153, 160)) ('Segmental neurofibromatosis', 'Disease', 'MESH:C537390', (0, 27)) ('NF1', 'Disease', (283, 286)) ('NF', 'Phenotype', 'HP:0001067', (283, 285)) ('mutation', 'Var', (287, 295)) ('NF1', 'Disease', (49, 52)) ('neurofibromas', 'Disease', (119, 132)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (10, 27)) ('NF1', 'Disease', 'MESH:D009456', (283, 286)) ('Segmental neurofibromatosis', 'Disease', (0, 27)) ('NF', 'Phenotype', 'HP:0001067', (49, 51)) ('men', 'Species', '9606', (3, 6)) 113296 30977114 Clinical implications of the oncometabolite succinate in SDHx-mutation carriers Succinate dehydrogenase (SDH) mutations lead to the accumulation of succinate, which acts as an oncometabolite. ('SDH', 'Gene', (105, 108)) ('succinate', 'Chemical', 'MESH:D013386', (148, 157)) ('SDHx-mutation', 'Gene', (57, 70)) ('mutations', 'Var', (110, 119)) ('Succinate dehydrogenase', 'Gene', '6390', (80, 103)) ('accumulation', 'PosReg', (132, 144)) ('Succinate dehydrogenase', 'Gene', (80, 103)) ('succinate', 'MPA', (148, 157)) ('succinate', 'Chemical', 'MESH:D013386', (44, 53)) 113297 30977114 Germline SDHx mutations predispose to paraganglioma (PGL) and pheochromocytoma (PCC), as well as to renal cell carcinoma and gastro-intestinal stromal tumors. ('pheochromocytoma', 'Disease', 'MESH:D010673', (62, 78)) ('tumors', 'Phenotype', 'HP:0002664', (151, 157)) ('PGL', 'Disease', 'MESH:D010235', (53, 56)) ('pheochromocytoma', 'Disease', (62, 78)) ('gastro-intestinal stromal tumors', 'Disease', (125, 157)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('carcinoma', 'Phenotype', 'HP:0030731', (111, 120)) ('tumor', 'Phenotype', 'HP:0002664', (151, 156)) ('gastro-intestinal stromal tumors', 'Disease', 'MESH:D046152', (125, 157)) ('paraganglioma', 'Phenotype', 'HP:0002668', (38, 51)) ('gastro-intestinal stromal tumors', 'Phenotype', 'HP:0100723', (125, 157)) ('predispose', 'Reg', (24, 34)) ('mutations', 'Var', (14, 23)) ('SDHx', 'Gene', (9, 13)) ('PGL', 'Phenotype', 'HP:0002668', (53, 56)) ('PCC', 'Phenotype', 'HP:0002666', (80, 83)) ('PGL', 'Disease', (53, 56)) ('renal cell carcinoma', 'Disease', 'MESH:D002292', (100, 120)) ('PCC', 'Gene', (80, 83)) ('paraganglioma', 'Disease', (38, 51)) ('PCC', 'Gene', '1421', (80, 83)) ('renal cell carcinoma', 'Disease', (100, 120)) ('paraganglioma', 'Disease', 'MESH:D010235', (38, 51)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (100, 120)) 113302 30977114 This review provides an overview of the pathophysiology and clinical implications of oncometabolite succinate in SDHx mutations. ('mutations', 'Var', (118, 127)) ('SDHx', 'Gene', (113, 117)) ('succinate', 'Chemical', 'MESH:D013386', (100, 109)) 113303 30977114 Mutations of genes encoding for the succinate dehydrogenase (SDH) complex, associated with familial paraganglioma (PGL) and pheochromocytoma (PCC), lead to accumulation of succinate, which disturbs the metabolic regulation of the cell. ('pheochromocytoma', 'Disease', 'MESH:D010673', (124, 140)) ('SDH', 'Gene', (61, 64)) ('pheochromocytoma', 'Disease', (124, 140)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (124, 140)) ('lead to', 'Reg', (148, 155)) ('succinate', 'Chemical', 'MESH:D013386', (172, 181)) ('PGL', 'Disease', 'MESH:D010235', (115, 118)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (91, 113)) ('Mutations', 'Var', (0, 9)) ('succinate', 'Chemical', 'MESH:D013386', (36, 45)) ('metabolic regulation', 'MPA', (202, 222)) ('succinate dehydrogenase', 'Gene', '6390', (36, 59)) ('PCC', 'Phenotype', 'HP:0002666', (142, 145)) ('paraganglioma', 'Phenotype', 'HP:0002668', (100, 113)) ('PCC', 'Gene', (142, 145)) ('associated', 'Reg', (75, 85)) ('PGL', 'Phenotype', 'HP:0002668', (115, 118)) ('PGL', 'Disease', (115, 118)) ('PCC', 'Gene', '1421', (142, 145)) ('familial paraganglioma', 'Disease', (91, 113)) ('succinate', 'MPA', (172, 181)) ('accumulation', 'PosReg', (156, 168)) ('succinate dehydrogenase', 'Gene', (36, 59)) 113304 30977114 Nowadays metabolic dysregulation is recognized as one of the eight hallmarks of cancer.1 Although germline mutations in SDHx genes are predominantly linked to PGL and PCC, these mutations also predispose to renal cell carcinoma (RCC), gastrointestinal stromal tumors (GISTs) and, possibly, pituitary adenomas. ('PGL', 'Phenotype', 'HP:0002668', (160, 163)) ('PGL', 'Disease', (160, 163)) ('hallmarks of cancer', 'Disease', (67, 86)) ('tumors', 'Phenotype', 'HP:0002664', (261, 267)) ('PCC', 'Phenotype', 'HP:0002666', (168, 171)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (291, 309)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (291, 309)) ('pituitary adenomas', 'Disease', (291, 309)) ('tumor', 'Phenotype', 'HP:0002664', (261, 266)) ('renal cell carcinoma', 'Disease', 'MESH:D002292', (208, 228)) ('PCC', 'Gene', (168, 171)) ('cancer', 'Phenotype', 'HP:0002664', (80, 86)) ('GISTs', 'Disease', 'MESH:D046152', (269, 274)) ('GISTs', 'Phenotype', 'HP:0100723', (269, 274)) ('PCC', 'Gene', '1421', (168, 171)) ('SDHx', 'Gene', (121, 125)) ('linked', 'Reg', (150, 156)) ('hallmarks of cancer', 'Disease', 'MESH:D009369', (67, 86)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (236, 267)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (236, 267)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (291, 308)) ('renal cell carcinoma', 'Disease', (208, 228)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (208, 228)) ('PGL', 'Disease', 'MESH:D010235', (160, 163)) ('mutations', 'Var', (179, 188)) ('RCC', 'Disease', (230, 233)) ('GISTs', 'Disease', (269, 274)) ('RCC', 'Phenotype', 'HP:0005584', (230, 233)) ('carcinoma', 'Phenotype', 'HP:0030731', (219, 228)) ('predispose to', 'Reg', (194, 207)) ('mutations', 'Var', (108, 117)) ('gastrointestinal stromal tumors', 'Disease', (236, 267)) ('RCC', 'Disease', 'MESH:D002292', (230, 233)) 113313 30977114 Defective SDH function triggers the accumulation of succinate, an intermediate metabolite of the tricarboxylic acid (TCA) cycle, which plays a crucial role in the generation of adenosine triphosphate (ATP) in mitochondria. ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (97, 115)) ('SDH', 'Gene', (10, 13)) ('Defective', 'Var', (0, 9)) ('succinate', 'MPA', (52, 61)) ('TCA', 'Chemical', 'MESH:D014233', (117, 120)) ('accumulation', 'PosReg', (36, 48)) ('ATP', 'Chemical', 'MESH:D000255', (201, 204)) ('adenosine triphosphate', 'Chemical', 'MESH:D000255', (177, 199)) ('succinate', 'Chemical', 'MESH:D013386', (52, 61)) 113315 30977114 FH mutations lead to the accumulation of fumarate, and IDH mutations result in an accumulation of (R)-2-hydroxyglutarate. ('FH', 'Gene', '2271', (0, 2)) ('accumulation', 'PosReg', (82, 94)) ('IDH', 'Gene', (55, 58)) ('accumulation', 'PosReg', (25, 37)) ('(R)-2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (98, 120)) ('fumarate', 'Chemical', 'MESH:D005650', (41, 49)) ('IDH', 'Gene', '3417', (55, 58)) ('fumarate', 'MPA', (41, 49)) ('mutations', 'Var', (59, 68)) ('mutations', 'Var', (3, 12)) 113330 30977114 Although different SDHx mutations occur in genes encoding for a single enzyme, the clinical picture for each subunit differs with regard to penetrance, manifestations and rate of malignancy. ('mutations', 'Var', (24, 33)) ('malignancy', 'Disease', (179, 189)) ('malignancy', 'Disease', 'MESH:D009369', (179, 189)) ('SDHx', 'Gene', (19, 23)) 113331 30977114 Adherence to screening, leads to the detection of smaller PCC/PGL and might even lead to an improved survival for patients who develop metastases, although this is based on only few patients.16 Until now, a clear explanation for the difference of the clinical picture between different SDHx mutations is lacking, except for the hypothesis that the extent of SDH deficiency or loss depends on the subunit. ('mutations', 'Var', (292, 301)) ('metastases', 'Disease', (135, 145)) ('SDHx', 'Gene', (287, 291)) ('metastases', 'Disease', 'MESH:D009362', (135, 145)) ('PGL', 'Phenotype', 'HP:0002668', (62, 65)) ('PCC/PGL', 'Disease', 'MESH:D010673', (58, 65)) ('patients', 'Species', '9606', (182, 190)) ('PCC', 'Phenotype', 'HP:0002666', (58, 61)) ('PCC/PGL', 'Disease', (58, 65)) ('patients', 'Species', '9606', (114, 122)) ('loss', 'NegReg', (377, 381)) ('SDH', 'Gene', (359, 362)) 113333 30977114 The question of why SDHx mutations predispose to tumors in a select subset of tissues remains elusive. ('mutations', 'Var', (25, 34)) ('tumor', 'Phenotype', 'HP:0002664', (49, 54)) ('tumors', 'Phenotype', 'HP:0002664', (49, 55)) ('SDHx', 'Gene', (20, 24)) ('tumors', 'Disease', 'MESH:D009369', (49, 55)) ('tumors', 'Disease', (49, 55)) ('predispose to', 'Reg', (35, 48)) 113334 30977114 Mutations in the SDHA gene were originally described as a cause of autosomal recessive juvenile encephalopathy, also known as Leigh syndrome.26 Later on, in 2010, a 32 year old woman with an abdominal PGL was reported to have a heterozygous SDHA germline mutation.27 Mutations in the SDHA gene remain a rare cause of PGL and account for 1% to 7% of all PGL cases.28, 29 About half of SDHA mutation carriers present with HNPGL, although sympathetic PGL and PCC are also reported.30, 31, 32 Recently, van der Tuin et al calculated the penetrance of SDHA mutation in a cohort comprising 86 patients (30 index and 56 non-index patients). ('SDHA', 'Gene', (17, 21)) ('autosomal recessive juvenile encephalopathy', 'Disease', (67, 110)) ('sympathetic PGL', 'Disease', 'MESH:D010235', (436, 451)) ('encephalopathy', 'Phenotype', 'HP:0001298', (96, 110)) ('SDHA', 'Gene', (384, 388)) ('SDHA', 'Gene', (241, 245)) ('mutation', 'Var', (552, 560)) ('abdominal PGL', 'Disease', 'MESH:D010235', (191, 204)) ('PCC', 'Gene', (456, 459)) ('SDHA', 'Gene', '6389', (384, 388)) ('SDHA', 'Gene', '6389', (17, 21)) ('abdominal PGL', 'Disease', (191, 204)) ('PGL', 'Phenotype', 'HP:0002668', (317, 320)) ('PGL', 'Disease', (317, 320)) ('SDHA', 'Gene', '6389', (241, 245)) ('PGL', 'Disease', 'MESH:D010235', (353, 356)) ('PCC', 'Gene', '1421', (456, 459)) ('juvenile encephalopathy', 'Phenotype', 'HP:0005681', (87, 110)) ('to 7', 'Species', '1214577', (340, 344)) ('PGL', 'Disease', 'MESH:D010235', (201, 204)) ('SDHA', 'Gene', (547, 551)) ('PGL', 'Disease', 'MESH:D010235', (448, 451)) ('SDHA', 'Gene', (284, 288)) ('PGL', 'Disease', 'MESH:D010235', (422, 425)) ('SDHA', 'Gene', '6389', (547, 551)) ('patients', 'Species', '9606', (623, 631)) ('PGL', 'Phenotype', 'HP:0002668', (353, 356)) ('SDHA', 'Gene', '6389', (284, 288)) ('PGL', 'Disease', (353, 356)) ('PGL', 'Phenotype', 'HP:0002668', (201, 204)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (126, 140)) ('PGL', 'Disease', (201, 204)) ('PGL', 'Phenotype', 'HP:0002668', (448, 451)) ('woman', 'Species', '9606', (177, 182)) ('PGL', 'Phenotype', 'HP:0002668', (422, 425)) ('PGL', 'Disease', 'MESH:D010235', (317, 320)) ('PGL', 'Disease', (448, 451)) ('autosomal recessive juvenile encephalopathy', 'Disease', 'MESH:D001927', (67, 110)) ('sympathetic PGL', 'Disease', (436, 451)) ('PGL', 'Disease', (422, 425)) ('Leigh syndrome', 'Disease', (126, 140)) ('patients', 'Species', '9606', (587, 595)) ('PCC', 'Phenotype', 'HP:0002666', (456, 459)) 113335 30977114 The penetrance for all manifestations was only 10% at age 70 in non-index patients, but 50% at age 70 when both index and non-index patients were included in the analysis.32 Metastatic disease was reported in 0% to 33% of PGL patients with SDHA mutations, although these reports included few patients (n = 4-34).31, 32, 33, 34, 35, 36 GISTs and pituitary adenomas were reported in a small subset of patients.24, 31, 32, 37, 38 In a large pediatric GIST study of Boikos et al, a SDHA mutation, germline or somatic, was the most common molecular subtype39 Neuroblastoma was reported in one SDHA mutation carrier where it was possible to confirm loss of heterozygosity (LoH) in tumor tissue.38 Mutations in the SDHB gene are those most frequently found in PGL and account for about 10% of all cases of PGL.28 Most common manifestations are sympathetic PGLs (50%), whereas PCC and HNPGL occur less often (20%-25% and 20%-30%, respectively).15 Bilateral PCCs appear to be rare in SDHB mutation carriers. ('PGLs', 'Disease', (851, 855)) ('PGL', 'Disease', (881, 884)) ('sympathetic PGL', 'Disease', 'MESH:D010235', (839, 854)) ('GISTs', 'Disease', (336, 341)) ('SDHA', 'Gene', '6389', (479, 483)) ('SDHA', 'Gene', (241, 245)) ('Neuroblastoma', 'Disease', 'MESH:D009447', (555, 568)) ('PGL', 'Phenotype', 'HP:0002668', (755, 758)) ('SDHB', 'Gene', (977, 981)) ('SDHA', 'Gene', (589, 593)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (346, 364)) ('PGL', 'Phenotype', 'HP:0002668', (223, 226)) ('PGL', 'Disease', (755, 758)) ('patients', 'Species', '9606', (132, 140)) ('PGL', 'Disease', (223, 226)) ('SDHA', 'Gene', '6389', (241, 245)) ('PGL', 'Phenotype', 'HP:0002668', (801, 804)) ('PGL', 'Disease', (801, 804)) ('pituitary adenomas', 'Disease', (346, 364)) ('tumor', 'Disease', (676, 681)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (346, 364)) ('SDHA', 'Gene', '6389', (589, 593)) ('tumor', 'Disease', 'MESH:D009369', (676, 681)) ('PCC', 'Phenotype', 'HP:0002666', (951, 954)) ('patients', 'Species', '9606', (227, 235)) ('PGL', 'Disease', 'MESH:D010235', (851, 854)) ('patients', 'Species', '9606', (400, 408)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (346, 363)) ('PCC', 'Phenotype', 'HP:0002666', (871, 874)) ('patients', 'Species', '9606', (74, 82)) ('PGL', 'Disease', 'MESH:D010235', (881, 884)) ('PCC', 'Gene', (951, 954)) ('PGLs', 'Disease', 'MESH:D010235', (851, 855)) ('Neuroblastoma', 'Disease', (555, 568)) ('tumor', 'Phenotype', 'HP:0002664', (676, 681)) ('PCC', 'Gene', (871, 874)) ('PGL', 'Disease', 'MESH:D010235', (755, 758)) ('PGL', 'Phenotype', 'HP:0002668', (881, 884)) ('GISTs', 'Phenotype', 'HP:0100723', (336, 341)) ('PCC', 'Gene', '1421', (951, 954)) ('GISTs', 'Disease', 'MESH:D046152', (336, 341)) ('PGL', 'Disease', 'MESH:D010235', (223, 226)) ('mutation', 'Var', (982, 990)) ('Metastatic disease', 'Disease', 'MESH:D018223', (175, 193)) ('Neuroblastoma', 'Phenotype', 'HP:0003006', (555, 568)) ('PGL', 'Disease', 'MESH:D010235', (801, 804)) ('PGL', 'Phenotype', 'HP:0002668', (851, 854)) ('PCC', 'Gene', '1421', (871, 874)) ('PGL', 'Disease', (851, 854)) ('SDHA', 'Gene', (479, 483)) ('patients', 'Species', '9606', (293, 301)) ('Metastatic disease', 'Disease', (175, 193)) ('sympathetic PGL', 'Disease', (839, 854)) 113343 30977114 Moreover, SDH deficiency or loss may lead to overproduction of reactive oxygen species (ROS) and to a "rewiring" of the cell's metabolism. ('lead', 'Reg', (37, 41)) ('overproduction', 'MPA', (45, 59)) ('overproduction of reactive oxygen species', 'Phenotype', 'HP:0025464', (45, 86)) ('SDH', 'Gene', (10, 13)) ('reactive oxygen species', 'MPA', (63, 86)) ('deficiency', 'Var', (14, 24)) ('oxygen', 'Chemical', 'MESH:D010100', (72, 78)) ('loss', 'NegReg', (28, 32)) 113344 30977114 Tumors harboring a SDHx mutation have a strong hypoxic signature. ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('hypoxic', 'Disease', (47, 54)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('mutation', 'Var', (24, 32)) ('hypoxic', 'Disease', 'MESH:D000860', (47, 54)) ('SDHx', 'Gene', (19, 23)) 113360 30977114 Inhibition of these dioxygenases leads to hypermethylation of promotor regions (CpG islands) of several genes (also known as CpG island methylator phenotype [CIMP]). ('oxygen', 'Chemical', 'MESH:D010100', (22, 28)) ('hypermethylation', 'MPA', (42, 58)) ('Inhibition', 'Var', (0, 10)) 113361 30977114 Because methylation triggers gene transcription deregulation, hypermethylation of tumor-suppressor gene promotors plays an important role in tumorigenesis. ('tumor', 'Disease', 'MESH:D009369', (141, 146)) ('hypermethylation', 'Var', (62, 78)) ('tumor', 'Phenotype', 'HP:0002664', (141, 146)) ('tumor', 'Disease', 'MESH:D009369', (82, 87)) ('tumor', 'Disease', (141, 146)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('triggers', 'Reg', (20, 28)) ('gene transcription deregulation', 'MPA', (29, 60)) ('tumor', 'Disease', (82, 87)) ('methylation', 'Var', (8, 19)) 113364 30977114 In SDHB mutated tumors the level of hypermethylation seems to be significantly higher compared to other SDHx mutated tumors, and the expression of these target genes significantly lower. ('expression', 'MPA', (133, 143)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('hypermethylation', 'MPA', (36, 52)) ('tumors', 'Phenotype', 'HP:0002664', (16, 22)) ('tumors', 'Phenotype', 'HP:0002664', (117, 123)) ('mutated', 'Var', (8, 15)) ('tumor', 'Phenotype', 'HP:0002664', (16, 21)) ('tumors', 'Disease', (117, 123)) ('tumors', 'Disease', 'MESH:D009369', (117, 123)) ('tumors', 'Disease', 'MESH:D009369', (16, 22)) ('lower', 'NegReg', (180, 185)) ('higher', 'PosReg', (79, 85)) ('tumors', 'Disease', (16, 22)) ('SDHB', 'Gene', (3, 7)) 113365 30977114 The authors hypothesize that SDH inactivation may be more complete in SDHB mutated tumors compared to tumors harboring a mutation in the other subunits, leading to a higher succinate accumulation and hence a stronger inhibition of alpha-ketoglutarate-dependent demethylation.84 This could be an explanation for the higher metastatic risk in SDHB-related tumors. ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('tumors', 'Disease', (102, 108)) ('tumors', 'Disease', 'MESH:D009369', (102, 108)) ('tumors', 'Phenotype', 'HP:0002664', (102, 108)) ('tumor', 'Phenotype', 'HP:0002664', (354, 359)) ('tumors', 'Disease', (83, 89)) ('tumors', 'Phenotype', 'HP:0002664', (83, 89)) ('succinate', 'Chemical', 'MESH:D013386', (173, 182)) ('mutated', 'Var', (75, 82)) ('tumors', 'Phenotype', 'HP:0002664', (354, 360)) ('alpha-ketoglutarate', 'Chemical', 'MESH:C029743', (231, 250)) ('tumors', 'Disease', 'MESH:D009369', (83, 89)) ('tumors', 'Disease', (354, 360)) ('tumors', 'Disease', 'MESH:D009369', (354, 360)) ('tumor', 'Phenotype', 'HP:0002664', (102, 107)) 113366 30977114 The study of Richter et al confirmed that tumor succinate:fumarate ratios were higher in tumors of patients with SDHB mutations compared to tumors of patients with an SDHC/D mutation.87 EMT is a process by which epithelial cells lose their polarity and cell-to-cell adhesion, thereby gaining migratory and invasive properties to become mesenchymal stem cells. ('tumors', 'Disease', (89, 95)) ('polarity', 'CPA', (240, 248)) ('tumor', 'Disease', 'MESH:D009369', (140, 145)) ('patients', 'Species', '9606', (150, 158)) ('higher', 'PosReg', (79, 85)) ('gaining', 'PosReg', (284, 291)) ('tumor', 'Disease', (42, 47)) ('tumors', 'Phenotype', 'HP:0002664', (140, 146)) ('SDHC', 'Gene', '6391', (167, 171)) ('tumors', 'Disease', 'MESH:D009369', (89, 95)) ('invasive properties', 'CPA', (306, 325)) ('tumor', 'Disease', 'MESH:D009369', (42, 47)) ('tumor', 'Phenotype', 'HP:0002664', (140, 145)) ('tumor', 'Disease', (89, 94)) ('tumors', 'Disease', (140, 146)) ('lose', 'NegReg', (229, 233)) ('mutations', 'Var', (118, 127)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) ('patients', 'Species', '9606', (99, 107)) ('tumor', 'Phenotype', 'HP:0002664', (42, 47)) ('SDHC', 'Gene', (167, 171)) ('succinate', 'Chemical', 'MESH:D013386', (48, 57)) ('tumors', 'Disease', 'MESH:D009369', (140, 146)) ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('SDHB', 'Gene', (113, 117)) ('fumarate', 'Chemical', 'MESH:D005650', (58, 66)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('tumor', 'Disease', (140, 145)) 113369 30977114 Kiss et al showed that the tumor suppressor gene P16 was hypermethylated in SDHB mutated tumor tissue samples as opposed to RET-, VHL- or NF-related PGL/PCC.90 P16 is an inhibitor of cyclin-dependent kinases and plays an important role in cell cycle regulation by decelerating the cells progression from G1 phase to S phase, and acts therefore as a tumor suppressor. ('G1 phase', 'CPA', (304, 312)) ('P16', 'Gene', '1029', (160, 163)) ('P16', 'Gene', (49, 52)) ('PGL', 'Phenotype', 'HP:0002668', (149, 152)) ('tumor', 'Phenotype', 'HP:0002664', (349, 354)) ('P16', 'Gene', (160, 163)) ('hypermethylated', 'Var', (57, 72)) ('tumor', 'Disease', (27, 32)) ('PCC', 'Phenotype', 'HP:0002666', (153, 156)) ('tumor', 'Disease', 'MESH:D009369', (27, 32)) ('tumor', 'Disease', (89, 94)) ('RET', 'Gene', '5979', (124, 127)) ('tumor', 'Disease', 'MESH:D009369', (89, 94)) ('VHL', 'Gene', (130, 133)) ('mutated', 'Var', (81, 88)) ('decelerating', 'NegReg', (264, 276)) ('tumor', 'Disease', (349, 354)) ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('SDHB', 'Gene', (76, 80)) ('S phase', 'CPA', (316, 323)) ('tumor', 'Disease', 'MESH:D009369', (349, 354)) ('VHL', 'Gene', '7428', (130, 133)) ('P16', 'Gene', '1029', (49, 52)) ('RET', 'Gene', (124, 127)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('cells progression', 'CPA', (281, 298)) 113371 30977114 Mitochondria are the major source of ROS, especially complexes I and III, although complex II can also produce a significant number.91, 92 Accumulation of succinate results in an over-reduced ubiquinone pool resulting in a reverse electron transfer to complex I, where electrons escape as ROS.93 Excessive ROS levels have been shown to stabilize HIFalpha and induce the pseudohypoxia pathway in SDHx-mutated PGL/PCC.94 In addition to the stabilization of HIFalpha, SDHx-mutation-induced increases in ROS have been shown to cause genomic instability that may contribute to tumorigenesis.95, 96 Nevertheless, experimental evidence for ROS in various models of SDH dysfunction is not consistent, as some suggests that ROS are increased or normal, a finding which is extensively reviewed by Kluckova and coworkers.8 SDH deficiency or loss can lead to reprogramming of cancer-related cell metabolism such as enhanced glycolysis (Warburg effect), as well as changes in anaplerotic pathways and in oxidative phosphorylation (Figure 3 ). ('deficiency', 'Var', (817, 827)) ('SDH', 'Gene', (813, 816)) ('changes', 'Reg', (953, 960)) ('cancer', 'Disease', (865, 871)) ('hypoxia', 'Disease', 'MESH:D000860', (376, 383)) ('cancer', 'Phenotype', 'HP:0002664', (865, 871)) ('succinate', 'Chemical', 'MESH:D013386', (155, 164)) ('ubiquinone', 'Chemical', 'MESH:D014451', (192, 202)) ('enhanced', 'PosReg', (904, 912)) ('SDHx-mutated PGL/PCC', 'Gene', (395, 415)) ('oxidative phosphorylation', 'MPA', (992, 1017)) ('PCC', 'Phenotype', 'HP:0002666', (412, 415)) ('loss', 'NegReg', (831, 835)) ('tumor', 'Disease', (572, 577)) ('hypoxia', 'Disease', (376, 383)) ('PGL', 'Phenotype', 'HP:0002668', (408, 411)) ('cancer', 'Disease', 'MESH:D009369', (865, 871)) ('tumor', 'Disease', 'MESH:D009369', (572, 577)) ('Excessive ROS levels', 'Phenotype', 'HP:0025464', (296, 316)) ('reprogramming', 'CPA', (848, 861)) ('tumor', 'Phenotype', 'HP:0002664', (572, 577)) ('anaplerotic pathways', 'Pathway', (964, 984)) ('lead', 'Reg', (840, 844)) ('glycolysis', 'MPA', (913, 923)) ('SDHx-mutated PGL/PCC', 'Gene', '1421', (395, 415)) 113374 30977114 Silencing of the pyruvate carboxylase gene both significantly reduced the proliferation of SDH cells in vitro and delayed the onset of tumor in vivo, compared to SDH proficient cells/mice. ('onset', 'MPA', (126, 131)) ('tumor', 'Phenotype', 'HP:0002664', (135, 140)) ('tumor', 'Disease', (135, 140)) ('mice', 'Species', '10090', (183, 187)) ('delayed', 'NegReg', (114, 121)) ('proliferation', 'CPA', (74, 87)) ('pyruvate carboxylase gene', 'Gene', (17, 42)) ('Silencing', 'Var', (0, 9)) ('reduced', 'NegReg', (62, 69)) ('tumor', 'Disease', 'MESH:D009369', (135, 140)) 113380 30977114 As an enhanced NAD+/PARP pathway was linked to chemoresistance in SDHB mutation carriers,107 inhibition of PARP could be a potential target to support chemotherapy, as further explained below. ('SDHB', 'Gene', (66, 70)) ('enhanced', 'PosReg', (6, 14)) ('NAD+/PARP pathway', 'Pathway', (15, 32)) ('mutation', 'Var', (71, 79)) ('NAD', 'Chemical', 'MESH:D009243', (15, 18)) ('chemoresistance', 'CPA', (47, 62)) 113387 30977114 Hobert et al measured succinate concentrations using gas chromatography-mass spectrometry in plasma and urine of patients with germline SDHB, SDHD, PTEN mutations and patients with sporadic PGL/PCC. ('PTEN', 'Gene', (148, 152)) ('PGL', 'Phenotype', 'HP:0002668', (190, 193)) ('PTEN', 'Gene', '5728', (148, 152)) ('succinate concentrations', 'MPA', (22, 46)) ('mutations', 'Var', (153, 162)) ('patients', 'Species', '9606', (113, 121)) ('patients', 'Species', '9606', (167, 175)) ('PCC', 'Phenotype', 'HP:0002666', (194, 197)) ('succinate', 'Chemical', 'MESH:D013386', (22, 31)) ('SDHB', 'Gene', (136, 140)) ('SDHD', 'Gene', '6392', (142, 146)) ('SDHD', 'Gene', (142, 146)) 113388 30977114 In three out of six SDHx mutation carriers (without PGL) elevated plasma succinate was recorded, while it was not elevated in any of patients with sporadic PGL/PCC.111 Tumor tissue can be used to measure the succinate:fumarate ratio using liquid chromatography-mass spectrometry (LC-MS).112, 113 An elevated succinate:fumarate ratio provides a diagnostic sensitivity of 93% and sensitivity of 97% to identify SDHx mutated PGL/PCC.87 Richter et al used 50 frozen specimens from 49 patients as a training set and 184 tumor samples as a validation set. ('tumor', 'Phenotype', 'HP:0002664', (516, 521)) ('patients', 'Species', '9606', (133, 141)) ('PGL', 'Disease', 'MESH:D010235', (156, 159)) ('fumarate', 'Chemical', 'MESH:D005650', (319, 327)) ('SDHx', 'Gene', (20, 24)) ('PGL', 'Disease', 'MESH:D010235', (52, 55)) ('mutation', 'Var', (25, 33)) ('PCC', 'Phenotype', 'HP:0002666', (160, 163)) ('PGL', 'Phenotype', 'HP:0002668', (156, 159)) ('elevated plasma succinate', 'Phenotype', 'HP:0020149', (57, 82)) ('succinate', 'Chemical', 'MESH:D013386', (209, 218)) ('patients', 'Species', '9606', (481, 489)) ('elevated succinate', 'Phenotype', 'HP:0020149', (300, 318)) ('PGL', 'Disease', (156, 159)) ('succinate', 'Chemical', 'MESH:D013386', (73, 82)) ('PGL', 'Disease', 'MESH:D010235', (423, 426)) ('succinate:fumarate ratio', 'MPA', (309, 333)) ('tumor', 'Disease', (516, 521)) ('fumarate', 'Chemical', 'MESH:D005650', (219, 227)) ('PCC', 'Phenotype', 'HP:0002666', (427, 430)) ('PGL', 'Phenotype', 'HP:0002668', (52, 55)) ('tumor', 'Disease', 'MESH:D009369', (516, 521)) ('PGL', 'Disease', (52, 55)) ('succinate', 'Chemical', 'MESH:D013386', (309, 318)) ('PGL', 'Phenotype', 'HP:0002668', (423, 426)) ('Tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('PGL', 'Disease', (423, 426)) ('elevated', 'PosReg', (300, 308)) 113394 30977114 Five patients had a SDHx gene mutation and in these patients a succinate peak could be detected.116 This offers unique opportunities for better characterizing these tumors at a metabolic level. ('patients', 'Species', '9606', (5, 13)) ('tumors', 'Disease', (165, 171)) ('mutation', 'Var', (30, 38)) ('tumors', 'Disease', 'MESH:D009369', (165, 171)) ('tumors', 'Phenotype', 'HP:0002664', (165, 171)) ('SDHx', 'Gene', (20, 24)) ('tumor', 'Phenotype', 'HP:0002664', (165, 170)) ('patients', 'Species', '9606', (52, 60)) ('succinate', 'Chemical', 'MESH:D013386', (63, 72)) 113397 30977114 Because the cell membrane is impermeable to 18F-FDG-6-P, it accumulates within cells in a manner directly proportionate to their metabolic activity. ('FDG', 'Chemical', 'MESH:D019788', (48, 51)) ('accumulates', 'PosReg', (60, 71)) ('18F-FDG-6-P', 'Var', (44, 55)) 113406 30977114 As described above, insight in the pathways leading to tumor formation and potential metastatic disease in patients with SDHx mutations, may lead to a better response to existing therapies and provide us with a unique opportunity to develop novel targeted therapies. ('tumor', 'Disease', 'MESH:D009369', (55, 60)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('metastatic disease', 'CPA', (85, 103)) ('better', 'PosReg', (151, 157)) ('tumor', 'Disease', (55, 60)) ('mutations', 'Var', (126, 135)) ('response', 'MPA', (158, 166)) ('patients', 'Species', '9606', (107, 115)) ('SDHx', 'Gene', (121, 125)) 113408 30977114 In a recent mouse model study of breast cancer, the alpha-ketoglutarate dehydrogenase (KGDH) inhibitor (AA6) was able to cause intracellular alpha-ketoglutarate accumulation.132 In the HIF2alpha structure is a specific cavity which can be targeted.133, 134 Two compounds, PT2385 and PT2399, have been developed to serve as an HIF2alpha inhibitor. ('breast cancer', 'Phenotype', 'HP:0003002', (33, 46)) ('HIF2alpha', 'Gene', (327, 336)) ('HIF2alpha', 'Gene', (186, 195)) ('alpha-ketoglutarate dehydrogenase', 'Gene', '18293', (52, 85)) ('PT2399', 'Var', (284, 290)) ('PT2399', 'Chemical', 'MESH:C045232', (284, 290)) ('alpha-ketoglutarate', 'Chemical', 'MESH:C029743', (141, 160)) ('mouse', 'Species', '10090', (12, 17)) ('PT2385', 'Var', (273, 279)) ('HIF2alpha', 'Gene', '2034', (327, 336)) ('breast cancer', 'Disease', 'MESH:D001943', (33, 46)) ('HIF2alpha', 'Gene', '2034', (186, 195)) ('alpha-ketoglutarate dehydrogenase', 'Gene', (52, 85)) ('cancer', 'Phenotype', 'HP:0002664', (40, 46)) ('breast cancer', 'Disease', (33, 46)) ('alpha-ketoglutarate', 'Chemical', 'MESH:C029743', (52, 71)) 113413 30977114 An excellent overview of existing data and forthcoming trials was recently published by Toledo and Jiminez.139 All TKIs inhibit angiogenesis, by inhibiting the activation of the VEGF receptor (VEGFR). ('VEGFR', 'Gene', '3791', (193, 198)) ('VEGFR', 'Gene', (193, 198)) ('VEGF receptor', 'Gene', '3791', (178, 191)) ('VEGF receptor', 'Gene', (178, 191)) ('inhibit', 'NegReg', (120, 127)) ('inhibiting', 'NegReg', (145, 155)) ('TKIs', 'Var', (115, 119)) ('angiogenesis', 'CPA', (128, 140)) ('activation', 'MPA', (160, 170)) 113418 30977114 Positive responses were noted in carriers of SDHB mutations as well as in patients with apparently sporadic tumors. ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('mutations', 'Var', (50, 59)) ('patients', 'Species', '9606', (74, 82)) ('sporadic tumors', 'Disease', 'MESH:D020821', (99, 114)) ('carriers', 'Reg', (33, 41)) ('sporadic tumors', 'Disease', (99, 114)) ('tumors', 'Phenotype', 'HP:0002664', (108, 114)) ('SDHB', 'Gene', (45, 49)) 113428 30977114 Inhibition of HSP90 leads to downregulation of HIF1alpha and is a potential target for therapy in metastatic PGL/PCC. ('HIF1alpha', 'Gene', (47, 56)) ('downregulation', 'NegReg', (29, 43)) ('metastatic PGL/PCC', 'Disease', (98, 116)) ('PGL', 'Phenotype', 'HP:0002668', (109, 112)) ('HIF1alpha', 'Gene', '3091', (47, 56)) ('HSP90', 'Gene', (14, 19)) ('HSP90', 'Gene', '3320', (14, 19)) ('PCC', 'Phenotype', 'HP:0002666', (113, 116)) ('Inhibition', 'Var', (0, 10)) 113431 30977114 Genetic inactivation of SDHB leads to a recruitment of HSP90 to the mitochondria, to help compensate for the impaired oxidative phosphorylation. ('Genetic inactivation', 'Var', (0, 20)) ('oxidative phosphorylation', 'MPA', (118, 143)) ('recruitment', 'MPA', (40, 51)) ('HSP90', 'Gene', (55, 60)) ('HSP90', 'Gene', '3320', (55, 60)) ('SDHB', 'Gene', (24, 28)) 113434 30977114 However, in the absence of prospective studies, the evidence is only based on small retrospective studies.141, 146, 147, 148, 149, 150, 151 In 2014, a meta-analysis was performed suggesting a partial response of 37%.152 Some reports however, suggest a higher response rate to temozolomide, an oral alternative to dacarbazine, in patients with SDHB mutations. ('dacarbazine', 'Chemical', 'MESH:D003606', (314, 325)) ('higher', 'PosReg', (253, 259)) ('temozolomide', 'Chemical', 'MESH:C047246', (277, 289)) ('SDHB', 'Gene', (344, 348)) ('response', 'MPA', (260, 268)) ('patients', 'Species', '9606', (330, 338)) ('mutations', 'Var', (349, 358)) 113438 30977114 In a study by Hadoux et al, 11 out of 14 patients with progressive metastatic disease, had a SDHB mutation.153 Thirty-six percent had partial response, 55% stable disease and 9% progressive disease. ('progressive disease', 'Disease', (178, 197)) ('SDHB', 'Gene', (93, 97)) ('patients', 'Species', '9606', (41, 49)) ('mutation.153', 'Var', (98, 110)) ('progressive disease', 'Disease', 'MESH:D018450', (178, 197)) 113439 30977114 The authors observed a longer progression-free survival in patients with an SDHB mutation compared to patients without an SDHB mutation (19.7 vs 2.9 months). ('SDHB', 'Gene', (76, 80)) ('longer', 'PosReg', (23, 29)) ('patients', 'Species', '9606', (102, 110)) ('mutation', 'Var', (81, 89)) ('patients', 'Species', '9606', (59, 67)) 113440 30977114 The higher response rate in patients with SDHB mutations could be caused by hypermethylation of the MGMT promotor region and consequently lower MGMT expression. ('MGMT', 'Gene', '4255', (100, 104)) ('hypermethylation', 'Var', (76, 92)) ('lower', 'NegReg', (138, 143)) ('mutations', 'Var', (47, 56)) ('higher', 'PosReg', (4, 10)) ('response', 'MPA', (11, 19)) ('patients', 'Species', '9606', (28, 36)) ('MGMT', 'Gene', '4255', (144, 148)) ('SDHB', 'Gene', (42, 46)) ('MGMT', 'Gene', (144, 148)) ('MGMT', 'Gene', (100, 104)) 113444 30977114 In two cell models decitabine was able to induce cell death of SDH -/- cells.84, 156 Ascorbic acid, alpha-tocopherol (vitamin E) and N-acetylcysteine all act as antioxidants preventing ROS damage, thereby diminishing tumorigenesis primarily through decreasing DNA damage and mutations. ('diminishing', 'NegReg', (206, 217)) ('N-acetylcysteine', 'Chemical', 'MESH:D000111', (134, 150)) ('vitamin E', 'Chemical', 'MESH:D014810', (119, 128)) ('decreasing', 'NegReg', (250, 260)) ('decitabine', 'Chemical', 'MESH:C014347', (19, 29)) ('mutations', 'Var', (276, 285)) ('tumor', 'Disease', 'MESH:D009369', (218, 223)) ('Ascorbic acid', 'Chemical', 'MESH:D001205', (86, 99)) ('tumor', 'Phenotype', 'HP:0002664', (218, 223)) ('alpha-tocopherol', 'Chemical', 'MESH:D024502', (101, 117)) ('tumor', 'Disease', (218, 223)) ('ROS', 'Protein', (186, 189)) ('DNA damage', 'MPA', (261, 271)) 113451 30977114 Recent years, we have seen an increase in knowledge regarding the consequence of loss of the SDH enzyme in the pathogenesis of (metastatic) PGL/PCC in patients harboring an SDHx mutation. ('SDH', 'Gene', (93, 96)) ('SDHx', 'Gene', (173, 177)) ('mutation', 'Var', (178, 186)) ('patients', 'Species', '9606', (151, 159)) ('PGL', 'Phenotype', 'HP:0002668', (140, 143)) ('loss', 'NegReg', (81, 85)) ('PCC', 'Phenotype', 'HP:0002666', (144, 147)) 113562 31211085 However, during the right adrenalectomy a hypertensive crisis developed despite clipping the adrenal vein, which highlights two important issues: the necessity of preparing the patient before the second operation even in the case of silent pheochromocytoma and the necessity to take precautions while dissecting the adrenal gland even after clipping the adrenal vein, since other tributaries may still be present. ('hypertensive crisis', 'Phenotype', 'HP:0100735', (42, 61)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (240, 256)) ('hypertensive', 'Disease', 'MESH:D006973', (42, 54)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (240, 256)) ('hypertensive', 'Disease', (42, 54)) ('clipping', 'Var', (80, 88)) ('pheochromocytoma', 'Disease', (240, 256)) ('patient', 'Species', '9606', (177, 184)) 113609 31037122 Only the p53 signaling pathway was over-represented in cells treated with both gamma-ray irradiation and 211At-MABG. ('p53', 'Gene', '24842', (9, 12)) ('211At-MABG', 'Var', (105, 115)) ('p53', 'Gene', (9, 12)) ('over-represented', 'PosReg', (35, 51)) 113624 31037122 These DEGs provide a straightforward description of the state of PC12 cells incorporating 211At-MABG, i.e., cell cycle regulation and cell death induction. ('rat', 'Species', '10116', (83, 86)) ('cell death', 'CPA', (134, 144)) ('cell cycle', 'CPA', (108, 118)) ('211At-MABG', 'Var', (90, 100)) ('PC12', 'CellLine', 'CVCL:0481', (65, 69)) 113630 31037122 Moreover, 211At-MABG treatment induced metastasis-related gene expression (Adam8, Jam3 and Mmp2). ('Mmp2', 'Gene', (91, 95)) ('Adam8', 'Gene', '499285', (75, 80)) ('metastasis-related', 'MPA', (39, 57)) ('Jam3', 'Gene', (82, 86)) ('211At-MABG', 'Var', (10, 20)) ('Adam8', 'Gene', (75, 80)) ('Jam3', 'Gene', '315509', (82, 86)) 113661 31037122 Despite a recent report that OTUB1 stabilizes MDMX and induces apoptosis, OTUB1 stabilizes proteins linked to cancer progression such as RAS and FOXM1 via deubiquitination and promotes tumor growth and invasion. ('tumor', 'Disease', (185, 190)) ('cancer', 'Disease', (110, 116)) ('stabilizes', 'NegReg', (80, 90)) ('promotes', 'PosReg', (176, 184)) ('MDMX', 'MPA', (46, 50)) ('FOXM1 via deubiquitination', 'Disease', (145, 171)) ('induces', 'PosReg', (55, 62)) ('proteins', 'Protein', (91, 99)) ('cancer', 'Phenotype', 'HP:0002664', (110, 116)) ('tumor', 'Disease', 'MESH:D009369', (185, 190)) ('invasion', 'CPA', (202, 210)) ('FOXM1 via deubiquitination', 'Disease', 'None', (145, 171)) ('apoptosis', 'CPA', (63, 72)) ('OTUB1', 'Var', (29, 34)) ('OTUB1', 'Var', (74, 79)) ('RAS', 'Disease', (137, 140)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('cancer', 'Disease', 'MESH:D009369', (110, 116)) 113662 31037122 Indeed, high expression of OTUB1 is clinically associated with tumor invasion, metastasis, poor prognosis, and low patient survival. ('tumor', 'Disease', (63, 68)) ('tumor', 'Phenotype', 'HP:0002664', (63, 68)) ('high', 'Var', (8, 12)) ('OTUB1', 'Gene', (27, 32)) ('tumor', 'Disease', 'MESH:D009369', (63, 68)) ('patient', 'Species', '9606', (115, 122)) ('associated', 'Reg', (47, 57)) ('metastasis', 'CPA', (79, 89)) ('low', 'NegReg', (111, 114)) 113675 31037122 In addition, we did not detect significant mutations in the p53 gene in PC12 cells, though mutations in p53 frequently occur in many cancers. ('occur', 'Reg', (119, 124)) ('p53', 'Gene', (104, 107)) ('p53', 'Gene', '24842', (104, 107)) ('cancers', 'Phenotype', 'HP:0002664', (133, 140)) ('p53', 'Gene', (60, 63)) ('cancers', 'Disease', (133, 140)) ('p53', 'Gene', '24842', (60, 63)) ('mutations', 'Var', (91, 100)) ('cancers', 'Disease', 'MESH:D009369', (133, 140)) ('PC12', 'CellLine', 'CVCL:0481', (72, 76)) ('cancer', 'Phenotype', 'HP:0002664', (133, 139)) 113753 29921267 To our knowledge, this is the second reported case of Cushing's syndrome caused by ectopic CRH secreted from an adrenal noncatecholamine-secreting pheochromocytoma. ("Cushing's syndrome", 'Disease', (54, 72)) ("Cushing's syndrome", 'Disease', 'MESH:D003480', (54, 72)) ('ectopic', 'Var', (83, 90)) ('CRH', 'Gene', (91, 94)) ('pheochromocytoma', 'Disease', (147, 163)) ('caused by', 'Reg', (73, 82)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (147, 163)) ("Cushing's syndrome", 'Phenotype', 'HP:0003118', (54, 72)) ('CRH', 'Gene', '1392', (91, 94)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (147, 163)) ('noncatecholamine', 'Chemical', '-', (120, 136)) 113759 29921267 In this case, a pre-existing tumor, chronological dexamethasone administration, and clinical symptoms and signs suggested that dexamethasone might induce CRH gene expression and/or secretion in the adrenal pheochromocytoma, thereby may provoke ectopic CRH syndrome. ('dexamethasone', 'Var', (127, 140)) ('ectopic CRH syndrome', 'Disease', 'MESH:D009384', (244, 264)) ('tumor', 'Disease', 'MESH:D009369', (29, 34)) ('induce', 'PosReg', (147, 153)) ('CRH', 'Gene', '1392', (154, 157)) ('ectopic CRH syndrome', 'Disease', (244, 264)) ('secretion', 'MPA', (181, 190)) ('CRH', 'Gene', (252, 255)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('dexamethasone', 'Chemical', 'MESH:D003907', (127, 140)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (198, 222)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (198, 222)) ('adrenal pheochromocytoma', 'Disease', (198, 222)) ('CRH', 'Gene', (154, 157)) ('dexamethasone', 'Chemical', 'MESH:D003907', (50, 63)) ('provoke', 'Reg', (236, 243)) ('tumor', 'Disease', (29, 34)) ('expression', 'MPA', (163, 173)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (206, 222)) ('CRH', 'Gene', '1392', (252, 255)) 113772 29850289 Up to 40% of patients with these tumors have germline mutations in known susceptibility genes. ('patients', 'Species', '9606', (13, 21)) ('tumor', 'Phenotype', 'HP:0002664', (33, 38)) ('tumors', 'Disease', 'MESH:D009369', (33, 39)) ('tumors', 'Phenotype', 'HP:0002664', (33, 39)) ('germline mutations', 'Var', (45, 63)) ('tumors', 'Disease', (33, 39)) 113777 29850289 Mutation screening detected a RET p.D898Y mutation, both in the patient and in the patient's two sons and older sister. ('RET', 'Gene', (30, 33)) ('patient', 'Species', '9606', (64, 71)) ('RET', 'Gene', '5979', (30, 33)) ('p.D898Y', 'Mutation', 'rs587780810', (34, 41)) ('patient', 'Species', '9606', (83, 90)) ('p.D898Y', 'Var', (34, 41)) 113779 29850289 The mutation should be categorized as a variant of unknown significance because no RET gene related disorders were detected in this family. ('RET', 'Gene', (83, 86)) ('RET', 'Gene', '5979', (83, 86)) ('mutation', 'Var', (4, 12)) 113780 29850289 Long term follow-up will be required to determine the clinical significance of the RET D898Y mutation. ('D898Y', 'Mutation', 'rs587780810', (87, 92)) ('RET', 'Gene', (83, 86)) ('RET', 'Gene', '5979', (83, 86)) ('D898Y', 'Var', (87, 92)) 113785 29850289 Among the many PPGL susceptibility genes, RET is a well-known protooncogene, germline mutations of which cause multiple endocrine neoplasia type 2 (MEN2), which is characterized by medullary thyroid carcinoma (MTC), PCC, and hyperparathyroidism. ('RET', 'Gene', '5979', (42, 45)) ('hyperparathyroidism', 'Disease', (225, 244)) ('cause', 'Reg', (105, 110)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (191, 208)) ('carcinoma', 'Phenotype', 'HP:0030731', (199, 208)) ('neoplasia', 'Phenotype', 'HP:0002664', (130, 139)) ('hyperparathyroidism', 'Disease', 'MESH:D006961', (225, 244)) ('neoplasia type 2', 'Disease', (130, 146)) ('PCC', 'Gene', (216, 219)) ('RET', 'Gene', (42, 45)) ('PCC', 'Gene', '1421', (216, 219)) ('mutations', 'Var', (86, 95)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (225, 244)) ('MTC', 'Phenotype', 'HP:0002865', (210, 213)) ('PPGL', 'Gene', (15, 19)) ('neoplasia type 2', 'Disease', 'MESH:D009369', (130, 146)) ('MEN', 'Species', '9606', (148, 151)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (120, 139)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (191, 208)) ('thyroid carcinoma', 'Disease', (191, 208)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (181, 208)) 113788 29850289 In patients with some RET gene mutation types, the occurrence of PCC as an initial clinical manifestation is more frequent than the occurrence of MTC. ('PCC', 'Gene', '1421', (65, 68)) ('RET', 'Gene', (22, 25)) ('mutation', 'Var', (31, 39)) ('RET', 'Gene', '5979', (22, 25)) ('MTC', 'Phenotype', 'HP:0002865', (146, 149)) ('patients', 'Species', '9606', (3, 11)) ('PCC', 'Gene', (65, 68)) 113789 29850289 For this reason, mutation screening of RET in PPGL patients and their families is important for the establishment of appropriate treatment management plans. ('RET', 'Gene', (39, 42)) ('PPGL', 'Gene', (46, 50)) ('mutation', 'Var', (17, 25)) ('RET', 'Gene', '5979', (39, 42)) ('patients', 'Species', '9606', (51, 59)) 113790 29850289 In the present study, a novel germline RET gene mutation (c.2692G>T, p.Asp898Tyr) of unknown significance was identified in a patient with PCC and her family members at the Seoul National University Hospital, South Korea. ('PCC', 'Gene', (139, 142)) ('RET', 'Gene', (39, 42)) ('p.Asp898Tyr', 'Mutation', 'rs587780810', (69, 80)) ('c.2692G>T', 'Var', (58, 67)) ('patient', 'Species', '9606', (126, 133)) ('c.2692G>T', 'Mutation', 'rs587780810', (58, 67)) ('PCC', 'Gene', '1421', (139, 142)) ('RET', 'Gene', '5979', (39, 42)) 113803 29850289 For the index patient, mutation testing included RET gene exons 8, 10, 11, 13, 14, 15, and 16 and their flanking regions using PCR and direct sequencing of DNA. ('patient', 'Species', '9606', (14, 21)) ('RET', 'Gene', (49, 52)) ('RET', 'Gene', '5979', (49, 52)) ('mutation', 'Var', (23, 31)) 113806 29850289 To evaluate the clinical significance of previously reported RET gene variants, we exploited the dbSNP (https://www.ncbi.nlm.nih.gov/SNP/) and ClinVar (https://www.ncbi.nlm.nih.gov/clinvar/) databases. ('RET', 'Gene', (61, 64)) ('variants', 'Var', (70, 78)) ('RET', 'Gene', '5979', (61, 64)) 113807 29850289 A germline mutation in the RET gene was identified in the index patient, her two sons, and her older sister. ('germline mutation', 'Var', (2, 19)) ('patient', 'Species', '9606', (64, 71)) ('RET', 'Gene', (27, 30)) ('RET', 'Gene', '5979', (27, 30)) 113809 29850289 Sanger sequencing revealed that the RET gene mutation was a c.2692G>T substitution (chromosome 10:43120165, reference sequence, GRCh38.p5), (Figure 3(a)). ('c.2692G>T', 'Var', (60, 69)) ('RET', 'Gene', (36, 39)) ('RET', 'Gene', '5979', (36, 39)) ('c.2692G>T', 'Mutation', 'rs587780810', (60, 69)) 113810 29850289 VEP analysis indicated that the mutation alters a GAT codon to TAT, resulting in a change in codon 898 (p.D898Y, Figure 3(b)). ('TAT', 'Disease', (63, 66)) ('codon 898', 'MPA', (93, 102)) ('alters', 'Reg', (41, 47)) ('change', 'Reg', (83, 89)) ('TAT', 'Disease', 'None', (63, 66)) ('p.D898Y', 'Mutation', 'rs587780810', (104, 111)) ('mutation', 'Var', (32, 40)) ('GAT codon', 'MPA', (50, 59)) 113812 29850289 Her sister and two sons, who also carried the mutation, did not develop any tumors during the 65-month surveillance period, although her sister had a history of thyroid cancer (Figure 2). ('thyroid cancer', 'Disease', 'MESH:D013964', (161, 175)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('cancer', 'Phenotype', 'HP:0002664', (169, 175)) ('tumors', 'Disease', (76, 82)) ('tumors', 'Disease', 'MESH:D009369', (76, 82)) ('tumors', 'Phenotype', 'HP:0002664', (76, 82)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (161, 175)) ('mutation', 'Var', (46, 54)) ('thyroid cancer', 'Disease', (161, 175)) 113815 29850289 Mutations of RET are associated with MEN types 2A and 2B and familial MTC. ('MEN', 'Species', '9606', (37, 40)) ('RET', 'Gene', (13, 16)) ('associated', 'Reg', (21, 31)) ('MTC', 'Phenotype', 'HP:0002865', (70, 73)) ('Mutations', 'Var', (0, 9)) ('RET', 'Gene', '5979', (13, 16)) ('familial MTC', 'Disease', (61, 73)) 113816 29850289 Hundreds of RET mutations have been identified, and the penetrance and aggressiveness of MEN related tumors vary according to the specific mutations. ('MEN', 'Species', '9606', (89, 92)) ('aggressiveness', 'Disease', (71, 85)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) ('aggressiveness', 'Phenotype', 'HP:0000718', (71, 85)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('mutations', 'Var', (16, 25)) ('RET', 'Gene', '5979', (12, 15)) ('RET', 'Gene', (12, 15)) ('aggressiveness', 'Disease', 'MESH:D001523', (71, 85)) ('tumors', 'Disease', (101, 107)) 113817 29850289 For example, mutation of RET codon 634 is the most frequently identified mutation in western countries and is associated with increased aggressiveness and younger onset of MTC compared with other RET mutations. ('RET', 'Gene', '5979', (25, 28)) ('MTC', 'Phenotype', 'HP:0002865', (172, 175)) ('aggressiveness', 'Disease', (136, 150)) ('mutation', 'Var', (13, 21)) ('RET', 'Gene', (196, 199)) ('aggressiveness', 'Phenotype', 'HP:0000718', (136, 150)) ('RET', 'Gene', (25, 28)) ('aggressiveness', 'Disease', 'MESH:D001523', (136, 150)) ('increased', 'PosReg', (126, 135)) ('RET', 'Gene', '5979', (196, 199)) 113818 29850289 Prophylactic thyroidectomy is recommended for children under 5 years old carrying the RET 634 mutation. ('RET', 'Gene', (86, 89)) ('RET', 'Gene', '5979', (86, 89)) ('mutation', 'Var', (94, 102)) ('children', 'Species', '9606', (46, 54)) 113819 29850289 The American Thyroid Association guidelines (2015) for managing MTC list the relationships between important RET gene mutations and aggressiveness of MTC and incidence of PCC and other related tumors, in order to provide clinical guidance on the management of MEN patients. ('RET', 'Gene', (109, 112)) ('aggressiveness of MTC', 'Disease', (132, 153)) ('aggressiveness', 'Phenotype', 'HP:0000718', (132, 146)) ('PCC', 'Gene', (171, 174)) ('mutations', 'Var', (118, 127)) ('tumors', 'Disease', 'MESH:D009369', (193, 199)) ('aggressiveness of MTC', 'Disease', 'MESH:C536911', (132, 153)) ('tumors', 'Phenotype', 'HP:0002664', (193, 199)) ('tumor', 'Phenotype', 'HP:0002664', (193, 198)) ('RET', 'Gene', '5979', (109, 112)) ('MTC', 'Phenotype', 'HP:0002865', (150, 153)) ('tumors', 'Disease', (193, 199)) ('patients', 'Species', '9606', (264, 272)) ('PCC', 'Gene', '1421', (171, 174)) ('MEN', 'Species', '9606', (260, 263)) ('MTC', 'Phenotype', 'HP:0002865', (64, 67)) 113820 29850289 Here, we describe the first RET D898Y germline mutation identified in a PCC patient and her two first-degree relatives. ('D898Y', 'Mutation', 'rs587780810', (32, 37)) ('RET', 'Gene', '5979', (28, 31)) ('PCC', 'Gene', '1421', (72, 75)) ('patient', 'Species', '9606', (76, 83)) ('RET', 'Gene', (28, 31)) ('PCC', 'Gene', (72, 75)) ('D898Y', 'Var', (32, 37)) 113821 29850289 The RET D898Y mutation was previously reported once in dbSNP (rs587780810) and once in the ClinVar database (RCV000123314.1) as a variant of uncertain significance. ('D898Y', 'Mutation', 'rs587780810', (8, 13)) ('RET', 'Gene', (4, 7)) ('D898Y', 'Var', (8, 13)) ('rs587780810', 'Mutation', 'rs587780810', (62, 73)) ('RET', 'Gene', '5979', (4, 7)) 113822 29850289 There is no other clinical reports describing the RET D898Y mutation in the literature. ('RET', 'Gene', (50, 53)) ('D898Y', 'Var', (54, 59)) ('RET', 'Gene', '5979', (50, 53)) ('D898Y', 'Mutation', 'rs587780810', (54, 59)) 113835 29850289 Recent advances in next generation sequencing technology have produced a cost-effective method to discover novel mutations responsible for hereditary disease. ('mutations', 'Var', (113, 122)) ('hereditary disease', 'Disease', 'MESH:D030342', (139, 157)) ('hereditary disease', 'Disease', (139, 157)) 113836 29850289 We identified a D898Y mutation in the RET gene with autosomal dominant inheritance in a PCC patient and her first-degree relatives. ('PCC', 'Gene', (88, 91)) ('patient', 'Species', '9606', (92, 99)) ('RET', 'Gene', '5979', (38, 41)) ('D898Y', 'Mutation', 'rs587780810', (16, 21)) ('PCC', 'Gene', '1421', (88, 91)) ('RET', 'Gene', (38, 41)) ('D898Y', 'Var', (16, 21)) 113899 29147442 Y90 radioembolization has been described as an emerging form of in situ cytoreductive treatment of hepatic metastasis of neuroendocrine tumors with variable response rates. ('tumors', 'Phenotype', 'HP:0002664', (136, 142)) ('hepatic metastasis of neuroendocrine tumors', 'Disease', 'MESH:D018358', (99, 142)) ('hepatic metastasis of neuroendocrine tumors', 'Disease', (99, 142)) ('Y90', 'Var', (0, 3)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (121, 142)) ('tumor', 'Phenotype', 'HP:0002664', (136, 141)) 113911 29147442 This study also demonstrates the therapeutic utility of Y90 radioembolization of liver metastasis in cases of malignant paraganglioma. ('liver metastasis', 'Disease', 'MESH:D009362', (81, 97)) ('liver metastasis', 'Disease', (81, 97)) ('paraganglioma', 'Phenotype', 'HP:0002668', (120, 133)) ('malignant paraganglioma', 'Disease', (110, 133)) ('Y90', 'Var', (56, 59)) ('malignant paraganglioma', 'Disease', 'MESH:C565335', (110, 133)) 113973 28764742 DNA analysis of a peripheral blood sample showed no mutations in exons 2-10 of the MEN1 gene, exons 1-3 of the VHL gene, and exon 16 of the RET gene. ('mutations', 'Var', (52, 61)) ('MEN1', 'Gene', (83, 87)) ('VHL', 'Gene', (111, 114)) ('MEN1', 'Gene', '4221', (83, 87)) ('VHL', 'Gene', '7428', (111, 114)) ('RET', 'Gene', (140, 143)) ('RET', 'Gene', '5979', (140, 143)) 114020 28567294 Pheochromocytomatosis associated with a novel TMEM127 mutation Pheochromocytomatosis, a very rare form of pheochromocytoma recurrence, refers to new, multiple, and often small pheochromocytomas growing in and around the surgical resection bed of a previous adrenalectomy for a solitary pheochromocytoma. ('pheochromocytoma', 'Disease', (286, 302)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (286, 302)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (176, 193)) ('TMEM127', 'Gene', (46, 53)) ('Pheochromocytomatosis', 'Disease', 'None', (0, 21)) ('Pheochromocytomatosis', 'Disease', 'None', (63, 84)) ('associated', 'Reg', (22, 32)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (106, 122)) ('often small pheochromocytomas', 'Disease', 'MESH:D010673', (164, 193)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (176, 192)) ('TMEM127', 'Gene', '55654', (46, 53)) ('often small pheochromocytomas', 'Disease', (164, 193)) ('pheochromocytoma', 'Disease', (106, 122)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (106, 122)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) ('pheochromocytoma', 'Disease', (176, 192)) ('mutation', 'Var', (54, 62)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (176, 192)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (286, 302)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (63, 79)) ('Pheochromocytomatosis', 'Disease', (0, 21)) ('Pheochromocytomatosis', 'Disease', (63, 84)) 114029 28567294 Next-generation sequencing of a panel of genes found a novel heterozygous germline c.570delC mutation in TMEM127, one of the genes that, if mutated, confers susceptibility to syndromic pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (185, 201)) ('susceptibility', 'Reg', (157, 171)) ('syndromic pheochromocytoma', 'Disease', 'MESH:D010673', (175, 201)) ('TMEM127', 'Gene', (105, 112)) ('TMEM127', 'Gene', '55654', (105, 112)) ('c.570delC mutation', 'Var', (83, 101)) ('c.570delC', 'Mutation', 'rs1215337884', (83, 92)) ('syndromic pheochromocytoma', 'Disease', (175, 201)) 114033 28567294 We also report a novel TMEM127 mutation in this case. ('TMEM127', 'Gene', (23, 30)) ('mutation', 'Var', (31, 39)) ('TMEM127', 'Gene', '55654', (23, 30)) 114045 28567294 We here report a case of pheochromocytomatosis in a patient with a novel germline pathogenic mutation of TMEM127, one of the genes that, if mutated, confers susceptibility to syndromic pheochromocytoma. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (185, 201)) ('susceptibility', 'Reg', (157, 171)) ('syndromic pheochromocytoma', 'Disease', 'MESH:D010673', (175, 201)) ('TMEM127', 'Gene', (105, 112)) ('TMEM127', 'Gene', '55654', (105, 112)) ('patient', 'Species', '9606', (52, 59)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (25, 41)) ('mutation', 'Var', (93, 101)) ('pheochromocytomatosis', 'Disease', 'None', (25, 46)) ('syndromic pheochromocytoma', 'Disease', (175, 201)) ('pheochromocytomatosis', 'Disease', (25, 46)) 114084 28567294 Because of the family history of cancers and personal history of breast cancer and recurrent pheochromocytoma, the patient underwent a CancerNext-Expanded genetic test (Ambry Genetics, Aliso Viejo, CA, USA), which uses next-generation sequencing to detect mutations in 49 genes: APC, ATM, BAP1, BARD1, BRCA1, BRCA2, BRIP1, BMPR1A, CDH1, CDK4, CDKN2A, CHEK2, EPCAM, FH, FLCN, GREM1, MAX, MEN1, MET, MITF, MLH1, MRE11A, MSH2, MSH6, MUTYH, NBN, NF1, PALB2, PMS2, POLD1, POLE, PTEN, RAD50, RAD51C, RAD51D, RET, SDHA, SDHAF2, SDHB, SDHC, SDHD, SMAD4, SMARCA4, STK11, TMEM127, TP53, TSC1, TSC2 and VHL (the underlined genes are the 10 most commonly found, in mutant forms, in patients with pheochromocytoma or paraganglioma). ('SDHD', 'Disease', (533, 537)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (93, 109)) ('cancer', 'Phenotype', 'HP:0002664', (33, 39)) ('TSC1', 'Gene', (577, 581)) ('pheochromocytoma', 'Disease', (93, 109)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('cancers', 'Phenotype', 'HP:0002664', (33, 40)) ('SMARCA4', 'Gene', (546, 553)) ('paraganglioma', 'Phenotype', 'HP:0002668', (704, 717)) ('cancers', 'Disease', (33, 40)) ('mutant', 'Var', (653, 659)) ('SDHB', 'Gene', '6390', (521, 525)) ('cancer', 'Phenotype', 'HP:0002664', (72, 78)) ('VHL', 'Disease', 'MESH:D006623', (592, 595)) ('NF1', 'Gene', '4763', (442, 445)) ('TMEM127', 'Gene', (562, 569)) ('patients', 'Species', '9606', (670, 678)) ('TSC2', 'Gene', (583, 587)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (684, 700)) ('SDHD', 'Disease', 'None', (533, 537)) ('Aliso', 'Species', '111540', (185, 190)) ('NF1', 'Gene', (442, 445)) ('breast cancer', 'Phenotype', 'HP:0003002', (65, 78)) ('FH', 'Disease', 'MESH:D006938', (365, 367)) ('SDHB', 'Gene', (521, 525)) ('pheochromocytoma', 'Disease', (684, 700)) ('TMEM127', 'Gene', '55654', (562, 569)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (684, 700)) ('STK11', 'Gene', (555, 560)) ('breast cancer', 'Disease', 'MESH:D001943', (65, 78)) ('breast cancer', 'Disease', (65, 78)) ('patient', 'Species', '9606', (670, 677)) ('cancers', 'Disease', 'MESH:D009369', (33, 40)) ('paraganglioma', 'Disease', (704, 717)) ('TP53', 'Gene', (571, 575)) ('APC', 'Disease', 'MESH:D011125', (279, 282)) ('APC', 'Disease', (279, 282)) ('VHL', 'Disease', (592, 595)) ('patient', 'Species', '9606', (115, 122)) ('paraganglioma', 'Disease', 'MESH:D010235', (704, 717)) 114085 28567294 A novel heterozygous c.570delC mutation in TMEM127 was found. ('TMEM127', 'Gene', '55654', (43, 50)) ('TMEM127', 'Gene', (43, 50)) ('c.570delC', 'Var', (21, 30)) ('c.570delC', 'Mutation', 'rs1215337884', (21, 30)) 114086 28567294 Molecular analysis (with the EMBOSS software) showed that this mutation causes frameshift in TMEM127 mRNA translation and use of an alternative stop codon, resulting in replacement of the C-terminus of the TMEM127 protein with a different and longer peptide (p.T191RFS*116). ('TMEM127', 'Gene', (93, 100)) ('TMEM127', 'Gene', '55654', (93, 100)) ('C-terminus', 'MPA', (188, 198)) ('TMEM127', 'Gene', '55654', (206, 213)) ('p.T191R', 'SUBSTITUTION', 'None', (259, 266)) ('frameshift', 'Var', (79, 89)) ('p.T191R', 'Var', (259, 266)) ('TMEM127', 'Gene', (206, 213)) ('mRNA translation', 'MPA', (101, 117)) 114087 28567294 A known pathogenic mutation in TMEM127, c.572delC, is associated with bilateral pheochromocytoma in 2 monozygotic twin sisters. ('TMEM127', 'Gene', '55654', (31, 38)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (80, 96)) ('c.572delC', 'Mutation', 'c.572delC', (40, 49)) ('bilateral pheochromocytoma', 'Disease', 'MESH:D010673', (70, 96)) ('bilateral pheochromocytoma', 'Disease', (70, 96)) ('c.572delC', 'Var', (40, 49)) ('associated with', 'Reg', (54, 69)) ('TMEM127', 'Gene', (31, 38)) 114088 28567294 The c.570delC and c.572delC mutations have identical predicted deleterious effects on TMEM127 mRNA translation; the c.570delC mutation is thus likely pathogenic. ('c.570delC', 'Var', (116, 125)) ('TMEM127', 'Gene', '55654', (86, 93)) ('c.570delC', 'Mutation', 'rs1215337884', (116, 125)) ('c.570delC', 'Mutation', 'rs1215337884', (4, 13)) ('c.572delC', 'Mutation', 'c.572delC', (18, 27)) ('mRNA translation', 'MPA', (94, 110)) ('TMEM127', 'Gene', (86, 93)) 114107 28567294 Our patient is the third case of pheochromocytomatosis with a genetic mutation (the other two with MEN2 and NF1, respectively). ('genetic mutation', 'Var', (62, 78)) ('NF1', 'Gene', '4763', (108, 111)) ('pheochromocytomatosis', 'Disease', (33, 54)) ('pheochromocytomatosis', 'Disease', 'None', (33, 54)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (33, 49)) ('patient', 'Species', '9606', (4, 11)) ('NF1', 'Gene', (108, 111)) 114108 28567294 The patient's initial presentation is typical for pheochromocytoma associated with TMEM127 mutation, namely unilateral pheochromocytoma. ('TMEM127', 'Gene', (83, 90)) ('mutation', 'Var', (91, 99)) ('pheochromocytoma', 'Disease', (50, 66)) ('TMEM127', 'Gene', '55654', (83, 90)) ('patient', 'Species', '9606', (4, 11)) ('pheochromocytoma', 'Disease', (119, 135)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (50, 66)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (50, 66)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (119, 135)) ('associated', 'Reg', (67, 77)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (119, 135)) 114109 28567294 The lack of family history is not surprising as penetrance of pheochromocytoma in TMEM127 mutation carriers is typically low (32% at age 51-65 years). ('pheochromocytoma', 'Disease', 'MESH:D010673', (62, 78)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('TMEM127', 'Gene', (82, 89)) ('TMEM127', 'Gene', '55654', (82, 89)) ('low', 'NegReg', (121, 124)) ('mutation', 'Var', (90, 98)) ('pheochromocytoma', 'Disease', (62, 78)) 114116 28567294 As TMEM127 mutations have only been known to cause adrenal pheochromocytoma, we recommend biochemical testing and abdominal imaging for following our patient; some experts recommend whole-body MRI surveillance every 2-3 years for patients with TMEM127 mutations. ('TMEM127', 'Gene', (244, 251)) ('mutations', 'Var', (11, 20)) ('TMEM127', 'Gene', '55654', (244, 251)) ('patient', 'Species', '9606', (150, 157)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (51, 75)) ('patient', 'Species', '9606', (230, 237)) ('patients', 'Species', '9606', (230, 238)) ('mutations', 'Var', (252, 261)) ('cause', 'Reg', (45, 50)) ('TMEM127', 'Gene', (3, 10)) ('adrenal pheochromocytoma', 'Disease', (51, 75)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (59, 75)) ('adrenal pheochromocytoma', 'Disease', 'MESH:D010673', (51, 75)) ('TMEM127', 'Gene', '55654', (3, 10)) 114120 19189136 Several studies have shown that patients with succinate dehydrogenase subunit B (SDHB) mutations have a very high risk for developing malignant paragangliomas. ('patients', 'Species', '9606', (32, 40)) ('paragangliomas', 'Phenotype', 'HP:0002668', (144, 158)) ('paraganglioma', 'Phenotype', 'HP:0002668', (144, 157)) ('SDHB', 'Gene', '6390', (81, 85)) ('mutations', 'Var', (87, 96)) ('malignant paragangliomas', 'Disease', 'MESH:C565335', (134, 158)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (46, 79)) ('SDHB', 'Gene', (81, 85)) ('succinate dehydrogenase subunit B', 'Gene', (46, 79)) ('malignant paragangliomas', 'Disease', (134, 158)) 114133 19189136 In recent years several studies have been performed that describe genotype-phenotype correlations in patients with paragangliomas associated with mutations in the succinate dehydrogenase (SDH) gene family (SDH subunits B, C, D). ('patients', 'Species', '9606', (101, 109)) ('mutations', 'Var', (146, 155)) ('SDH', 'Gene', (188, 191)) ('paragangliomas', 'Disease', (115, 129)) ('paragangliomas', 'Disease', 'MESH:D010235', (115, 129)) ('SDH', 'Gene', (206, 209)) ('succinate dehydrogenase', 'Gene', (163, 186)) ('succinate dehydrogenase', 'Gene', '6390', (163, 186)) ('paragangliomas', 'Phenotype', 'HP:0002668', (115, 129)) ('paraganglioma', 'Phenotype', 'HP:0002668', (115, 128)) ('SDH', 'Gene', '6390', (188, 191)) ('SDH', 'Gene', '6390', (206, 209)) ('associated', 'Reg', (130, 140)) 114134 19189136 Patients with disease associated with succinate dehydrogenase subunit B (SDHB) mutation appear to have an increased risk for developing multiple more aggressive and malignant tumors, and they should have careful periodic surveillance, even after successful surgical removal. ('tumors', 'Phenotype', 'HP:0002664', (175, 181)) ('disease', 'Disease', (14, 21)) ('succinate dehydrogenase subunit B', 'Gene', '6390', (38, 71)) ('succinate dehydrogenase subunit B', 'Gene', (38, 71)) ('tumor', 'Phenotype', 'HP:0002664', (175, 180)) ('malignant tumors', 'Disease', (165, 181)) ('Patients', 'Species', '9606', (0, 8)) ('mutation', 'Var', (79, 87)) ('malignant tumors', 'Disease', 'MESH:D018198', (165, 181)) ('SDHB', 'Gene', '6390', (73, 77)) ('SDHB', 'Gene', (73, 77)) 114137 19189136 Owing to the frequently aggressive nature of the disease associated with SDHB mutations, we believe clinicians should be aware of the possible presence of pheochromocytomas or paragangliomas in very young children. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (155, 171)) ('paragangliomas', 'Disease', (176, 190)) ('paragangliomas', 'Disease', 'MESH:D010235', (176, 190)) ('children', 'Species', '9606', (205, 213)) ('paragangliomas', 'Phenotype', 'HP:0002668', (176, 190)) ('mutations', 'Var', (78, 87)) ('pheochromocytomas', 'Disease', (155, 172)) ('paraganglioma', 'Phenotype', 'HP:0002668', (176, 189)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (155, 172)) ('SDHB', 'Gene', '6390', (73, 77)) ('SDHB', 'Gene', (73, 77)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (155, 172)) 114148 19189136 Genetic testing revealed a mutation in the SDHB gene (G change to T at cDNA nucleotide 418 in exon 4) (c.418G.T), known to be associated with familial paragangliomas. ('associated', 'Reg', (126, 136)) ('c.418G.T', 'Mutation', 'rs267607032', (103, 111)) ('familial paragangliomas', 'Disease', (142, 165)) ('SDHB', 'Gene', '6390', (43, 47)) ('paraganglioma', 'Phenotype', 'HP:0002668', (151, 164)) ('paragangliomas', 'Phenotype', 'HP:0002668', (151, 165)) ('familial paragangliomas', 'Disease', 'MESH:D010235', (142, 165)) ('SDHB', 'Gene', (43, 47)) ('c.418G.T', 'Var', (103, 111)) 114149 19189136 After genetic testing had been performed on members of her family, it was found that her father and paternal grandfather had findings positive for the SDHB mutation as well but had not developed any pheochromocytoma or paraganglioma so far. ('positive', 'Reg', (134, 142)) ('paraganglioma', 'Phenotype', 'HP:0002668', (219, 232)) ('paraganglioma', 'Disease', (219, 232)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (199, 215)) ('SDHB', 'Gene', '6390', (151, 155)) ('SDHB', 'Gene', (151, 155)) ('pheochromocytoma', 'Disease', (199, 215)) ('paraganglioma', 'Disease', 'MESH:D010235', (219, 232)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (199, 215)) ('mutation', 'Var', (156, 164)) 114150 19189136 We describe an 8-year-old patient with a malignant thoracic paraganglioma associated with a mutation in the SDHB gene. ('patient', 'Species', '9606', (26, 33)) ('SDHB', 'Gene', (108, 112)) ('malignant thoracic paraganglioma', 'Disease', (41, 73)) ('mutation', 'Var', (92, 100)) ('malignant thoracic paraganglioma', 'Disease', 'MESH:C565335', (41, 73)) ('SDHB', 'Gene', '6390', (108, 112)) ('paraganglioma', 'Phenotype', 'HP:0002668', (60, 73)) ('associated', 'Reg', (74, 84)) 114152 19189136 This case suggests that the screening of SDHB mutation carriers for paragangliomas and pheochromocytomas should commence at a younger age than previously suggested. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (87, 103)) ('SDHB', 'Gene', (41, 45)) ('paragangliomas', 'Phenotype', 'HP:0002668', (68, 82)) ('paraganglioma', 'Phenotype', 'HP:0002668', (68, 81)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (87, 104)) ('pheochromocytomas', 'Disease', (87, 104)) ('SDHB', 'Gene', '6390', (41, 45)) ('mutation', 'Var', (46, 54)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (87, 104)) ('paragangliomas', 'Disease', 'MESH:D010235', (68, 82)) ('paragangliomas', 'Disease', (68, 82)) 114159 19189136 In the literature several children with paragangliomas have been described who were carriers of the SDHB mutation. ('paraganglioma', 'Phenotype', 'HP:0002668', (40, 53)) ('paragangliomas', 'Phenotype', 'HP:0002668', (40, 54)) ('SDHB', 'Gene', '6390', (100, 104)) ('mutation', 'Var', (105, 113)) ('carriers', 'Reg', (84, 92)) ('children', 'Species', '9606', (26, 34)) ('paragangliomas', 'Disease', (40, 54)) ('paragangliomas', 'Disease', 'MESH:D010235', (40, 54)) ('SDHB', 'Gene', (100, 104)) 114160 19189136 estimated that an SDHB mutation is present in 20% of the childhood pheochromocytoma cases. ('SDHB', 'Gene', (18, 22)) ('pheochromocytoma', 'Disease', (67, 83)) ('mutation', 'Var', (23, 31)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (67, 83)) ('child', 'Species', '9606', (57, 62)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (67, 83)) ('SDHB', 'Gene', '6390', (18, 22)) 114161 19189136 reported on a young boy with an SDHB mutation-associated pheochromocytoma at the age of 7 years who presented with a 2-month history of typical complaints. ('SDHB', 'Gene', '6390', (32, 36)) ('pheochromocytoma', 'Disease', (57, 73)) ('SDHB', 'Gene', (32, 36)) ('boy', 'Species', '9606', (20, 23)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (57, 73)) ('mutation-associated', 'Var', (37, 56)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (57, 73)) 114164 19189136 Unfortunately, SDHB mutations were not known to be present in the family, and she was only later found to carry an SDHB mutation, so initial suspicion was low. ('SDHB', 'Gene', '6390', (115, 119)) ('SDHB', 'Gene', '6390', (15, 19)) ('SDHB', 'Gene', (15, 19)) ('SDHB', 'Gene', (115, 119)) ('mutation', 'Var', (120, 128)) 114165 19189136 In contrast to individuals with other sporadic or familial pheochromocytomas, SDHB mutation carriers may already have malignant disease at the time of initial diagnosis. ('malignant', 'Disease', (118, 127)) ('SDHB', 'Gene', '6390', (78, 82)) ('familial pheochromocytomas', 'Disease', (50, 76)) ('mutation', 'Var', (83, 91)) ('SDHB', 'Gene', (78, 82)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (59, 76)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (59, 75)) ('familial pheochromocytomas', 'Disease', 'MESH:C531777', (50, 76)) 114166 19189136 In a cohort of patients that were SDHB mutation-positive, metastases were identified in 22% during their first surgery, with sites of distant metastases including lung, liver, bone and lymph nodes. ('patients', 'Species', '9606', (15, 23)) ('mutation-positive', 'Var', (39, 56)) ('metastases', 'Disease', (142, 152)) ('metastases', 'Disease', 'MESH:D009362', (142, 152)) ('lung', 'Disease', (163, 167)) ('SDHB', 'Gene', '6390', (34, 38)) ('SDHB', 'Gene', (34, 38)) ('metastases', 'Disease', (58, 68)) ('metastases', 'Disease', 'MESH:D009362', (58, 68)) 114170 19189136 Although, in recent years, there has been the suggestion that screening in families with a known SDHB mutation should be started at a younger age, no consensus, regarding the age, has been reached so far. ('mutation', 'Var', (102, 110)) ('SDHB', 'Gene', (97, 101)) ('SDHB', 'Gene', '6390', (97, 101)) 114171 19189136 Experts working in this field have recommended starting such surveillance 10 years before the earliest age of diagnosis in the family, or, more specifically at 5-10 years of age for SDHB mutation carriers. ('mutation', 'Var', (187, 195)) ('SDHB', 'Gene', '6390', (182, 186)) ('SDHB', 'Gene', (182, 186)) 114175 19189136 This case clearly illustrates the importance of appropriate and early screening for catecholamine excess (by measurements of either plasma or urine metanephrines) in children who are known to carry an SDHB gene mutation. ('SDHB', 'Gene', '6390', (201, 205)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (84, 104)) ('SDHB', 'Gene', (201, 205)) ('children', 'Species', '9606', (166, 174)) ('metanephrine', 'Chemical', 'MESH:D008676', (148, 160)) ('catecholamine', 'Chemical', 'MESH:D002395', (84, 97)) ('mutation', 'Var', (211, 219)) ('catecholamine excess', 'MPA', (84, 104)) 114176 19189136 However, some children with SDHB mutation may have biochemically silent pheochromocytomas or paragangliomas. ('children', 'Species', '9606', (14, 22)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (72, 89)) ('mutation', 'Var', (33, 41)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (72, 88)) ('pheochromocytomas', 'Disease', (72, 89)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (72, 89)) ('paragangliomas', 'Disease', (93, 107)) ('paragangliomas', 'Disease', 'MESH:D010235', (93, 107)) ('paragangliomas', 'Phenotype', 'HP:0002668', (93, 107)) ('paraganglioma', 'Phenotype', 'HP:0002668', (93, 106)) ('SDHB', 'Gene', '6390', (28, 32)) ('SDHB', 'Gene', (28, 32)) 114198 24571605 A hormonal study and 123I-metaiodobenzylguanidine (MIBG) scintigraphy were performed, showing an elevated plasma norepinephrine level (702pg/ml; normal range, 100 to 450pg/ml) and a normal plasma epinephrine (32pg/ml; normal range, <100pg/ml) and dopamine (10pg/ml; normal range, <20pg/ml) level. ('elevated', 'PosReg', (97, 105)) ('dopamine', 'Chemical', 'MESH:D004298', (247, 255)) ('MIBG', 'Chemical', 'MESH:D019797', (51, 55)) ('epinephrine', 'Chemical', 'MESH:D004837', (116, 127)) ('norepinephrine', 'Chemical', 'MESH:D009638', (113, 127)) ('epinephrine', 'Chemical', 'MESH:D004837', (196, 207)) ('elevated plasma norepinephrine', 'Phenotype', 'HP:0003345', (97, 127)) ('123I-metaiodobenzylguanidine', 'Chemical', 'MESH:D019797', (21, 49)) ('702pg/ml', 'Var', (135, 143)) ('plasma norepinephrine level', 'MPA', (106, 133)) 114247 23946921 Genetic testing revealed succinate dehydrogenase B (SDHB) mutation. ('SDHB', 'Gene', (52, 56)) ('mutation', 'Var', (58, 66)) ('succinate dehydrogenase B', 'Gene', (25, 50)) ('succinate dehydrogenase B', 'Gene', '6390', (25, 50)) ('SDHB', 'Gene', '6390', (52, 56)) 114249 23946921 131Iodine-MIBG can be used as adjuvant therapy in postoperative external beam radiation and in MIBG avid tumors. ('tumors', 'Disease', (105, 111)) ('tumors', 'Disease', 'MESH:D009369', (105, 111)) ('MIBG', 'Chemical', 'MESH:D019797', (10, 14)) ('131Iodine-MIBG', 'Var', (0, 14)) ('131Iodine-MIBG', 'Chemical', '-', (0, 14)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('tumors', 'Phenotype', 'HP:0002664', (105, 111)) ('MIBG', 'Chemical', 'MESH:D019797', (95, 99)) 114250 23946921 Long-term follow-up is needed given locally aggressive nature of these tumors, especially for patients with history of genetic mutations such as SDHB mutations as recurrent paragangliomas may develop. ('SDHB', 'Gene', '6390', (145, 149)) ('paragangliomas', 'Phenotype', 'HP:0002668', (173, 187)) ('patients', 'Species', '9606', (94, 102)) ('SDHB', 'Gene', (145, 149)) ('paraganglioma', 'Phenotype', 'HP:0002668', (173, 186)) ('paragangliomas', 'Disease', (173, 187)) ('paragangliomas', 'Disease', 'MESH:D010235', (173, 187)) ('tumor', 'Phenotype', 'HP:0002664', (71, 76)) ('mutations', 'Var', (150, 159)) ('tumors', 'Phenotype', 'HP:0002664', (71, 77)) ('tumors', 'Disease', (71, 77)) ('mutations', 'Var', (127, 136)) ('tumors', 'Disease', 'MESH:D009369', (71, 77)) 114258 23946921 Succinate dehydrogenase (SDH) complex (A to D) mutations have been associated with increased risk of tumors including paragangliomas and pheochromocytomas. ('paragangliomas and pheochromocytomas', 'Disease', 'MESH:D010673', (118, 154)) ('tumors', 'Disease', 'MESH:D009369', (101, 107)) ('SDH', 'Gene', (25, 28)) ('Succinate dehydrogenase', 'Gene', (0, 23)) ('tumor', 'Phenotype', 'HP:0002664', (101, 106)) ('A to D', 'Gene', '64069', (39, 45)) ('paraganglioma', 'Phenotype', 'HP:0002668', (118, 131)) ('mutations', 'Var', (47, 56)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (137, 154)) ('A to D', 'Gene', (39, 45)) ('associated', 'Reg', (67, 77)) ('paragangliomas', 'Phenotype', 'HP:0002668', (118, 132)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (137, 153)) ('tumors', 'Phenotype', 'HP:0002664', (101, 107)) ('SDH', 'Gene', '6390', (25, 28)) ('Succinate dehydrogenase', 'Gene', '6390', (0, 23)) ('tumors', 'Disease', (101, 107)) 114259 23946921 Tumors associated with the SDHB mutations tend to be extra-adrenal and can occur in the head and neck region. ('occur', 'Reg', (75, 80)) ('Tumors', 'Disease', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('mutations', 'Var', (32, 41)) ('SDHB', 'Gene', '6390', (27, 31)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('SDHB', 'Gene', (27, 31)) 114281 23946921 Genetic testing revealed a mutation in the SDHB gene. ('mutation', 'Var', (27, 35)) ('SDHB', 'Gene', '6390', (43, 47)) ('revealed', 'Reg', (16, 24)) ('SDHB', 'Gene', (43, 47)) 114290 23946921 Additionally, evaluation for synchronous lesions using CT and/or MRI scan as well as MIBG scan is important, especially in patients with history of SDHB mutations. ('MIBG', 'Chemical', 'MESH:D019797', (85, 89)) ('SDHB', 'Gene', (148, 152)) ('mutations', 'Var', (153, 162)) ('patients', 'Species', '9606', (123, 131)) ('synchronous lesions', 'Disease', (29, 48)) ('synchronous lesions', 'Disease', 'MESH:D009378', (29, 48)) ('SDHB', 'Gene', '6390', (148, 152)) 114291 23946921 Patients with SDHB mutations tend to develop extra-adrenal paragangliomas with increased risk for developing tumor in the head and neck region as well as malignant and metastatic disease. ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (45, 73)) ('tumor', 'Disease', (109, 114)) ('extra-adrenal paragangliomas', 'Disease', (45, 73)) ('paragangliomas', 'Phenotype', 'HP:0002668', (59, 73)) ('mutations', 'Var', (19, 28)) ('paraganglioma', 'Phenotype', 'HP:0002668', (59, 72)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', '6390', (14, 18)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('SDHB', 'Gene', (14, 18)) ('develop', 'PosReg', (37, 44)) 114297 23946921 In patients with MIBG-avid disease, radionuclide 131I-MIBG therapy can provide with symptomatic relief and tumor control through interactions with active uptake-1 mechanism at the cell membrane and neurosecretory storage granules in the cytoplasm of neuroendocrine cells. ('interactions', 'Interaction', (129, 141)) ('tumor', 'Phenotype', 'HP:0002664', (107, 112)) ('tumor', 'Disease', (107, 112)) ('131I-MIBG', 'Chemical', '-', (49, 58)) ('radionuclide', 'Chemical', 'MESH:D011868', (36, 48)) ('patients', 'Species', '9606', (3, 11)) ('MIBG-avid', 'Disease', (17, 26)) ('MIBG', 'Chemical', 'MESH:D019797', (54, 58)) ('tumor', 'Disease', 'MESH:D009369', (107, 112)) ('131I-MIBG', 'Var', (49, 58)) ('MIBG', 'Chemical', 'MESH:D019797', (17, 21)) 114298 23946921 Phase II clinical trials have shown that 131I-MIBG therapy was effective in producing a sustained complete or partial remission in patients who have good MIBG uptake on diagnostic scanning. ('patients', 'Species', '9606', (131, 139)) ('MIBG', 'Chemical', 'MESH:D019797', (154, 158)) ('partial', 'NegReg', (110, 117)) ('131I-MIBG', 'Chemical', '-', (41, 50)) ('131I-MIBG', 'Var', (41, 50)) ('MIBG', 'Chemical', 'MESH:D019797', (46, 50)) 114299 23946921 This patient underwent both postoperative intensity-modulated radiation therapy and therapeutic 131I-MIBG postoperatively due to tumor location and MIBG avidity. ('patient', 'Species', '9606', (5, 12)) ('131I-MIBG', 'Chemical', '-', (96, 105)) ('tumor', 'Disease', 'MESH:D009369', (129, 134)) ('MIBG', 'Chemical', 'MESH:D019797', (148, 152)) ('MIBG', 'Chemical', 'MESH:D019797', (101, 105)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('tumor', 'Disease', (129, 134)) ('131I-MIBG', 'Var', (96, 105)) 114302 23946921 This is especially important for patients with genetic mutations such as SDHB mutation who have higher probability of metastatic and metachronous tumors. ('mutation', 'Var', (78, 86)) ('patients', 'Species', '9606', (33, 41)) ('tumor', 'Phenotype', 'HP:0002664', (146, 151)) ('metachronous tumors', 'Disease', 'MESH:D016609', (133, 152)) ('metachronous tumors', 'Disease', (133, 152)) ('tumors', 'Phenotype', 'HP:0002664', (146, 152)) ('SDHB', 'Gene', '6390', (73, 77)) ('SDHB', 'Gene', (73, 77)) 114303 23946921 This case is an unusual presentation of a secreting skull base paraganglioma presenting with labile hypertension in a patient with history of prior paragangliomas and undiagnosed SDHB mutation. ('paraganglioma', 'Disease', 'MESH:D010235', (148, 161)) ('paraganglioma', 'Phenotype', 'HP:0002668', (63, 76)) ('hypertension', 'Disease', 'MESH:D006973', (100, 112)) ('SDHB', 'Gene', '6390', (179, 183)) ('paraganglioma', 'Disease', (63, 76)) ('paragangliomas', 'Disease', 'MESH:D010235', (148, 162)) ('paraganglioma', 'Phenotype', 'HP:0002668', (148, 161)) ('hypertension', 'Disease', (100, 112)) ('hypertension', 'Phenotype', 'HP:0000822', (100, 112)) ('paragangliomas', 'Disease', (148, 162)) ('SDHB', 'Gene', (179, 183)) ('paragangliomas', 'Phenotype', 'HP:0002668', (148, 162)) ('paraganglioma', 'Disease', (148, 161)) ('paraganglioma', 'Disease', 'MESH:D010235', (63, 76)) ('patient', 'Species', '9606', (118, 125)) ('mutation', 'Var', (184, 192)) 114304 23946921 Complete workup for these lesions in patients with SDHB mutations should include biochemical evaluation of catecholamine and metanephrine as well as CT, MRI, and MIBG imaging of head and neck as well as thorax and abdomen for synchronous or metastatic tumor. ('mutations', 'Var', (56, 65)) ('patients', 'Species', '9606', (37, 45)) ('catecholamine', 'Chemical', 'MESH:D002395', (107, 120)) ('synchronous', 'Disease', 'MESH:D009378', (226, 237)) ('tumor', 'Disease', 'MESH:D009369', (252, 257)) ('metanephrine', 'Chemical', 'MESH:D008676', (125, 137)) ('MIBG', 'Chemical', 'MESH:D019797', (162, 166)) ('synchronous', 'Disease', (226, 237)) ('tumor', 'Phenotype', 'HP:0002664', (252, 257)) ('SDHB', 'Gene', '6390', (51, 55)) ('SDHB', 'Gene', (51, 55)) ('tumor', 'Disease', (252, 257)) 114308 23946921 Long-term follow-up is essential for patients with SDHB mutations as they may develop recurrent paragangliomas. ('mutations', 'Var', (56, 65)) ('patients', 'Species', '9606', (37, 45)) ('paragangliomas', 'Disease', (96, 110)) ('paragangliomas', 'Disease', 'MESH:D010235', (96, 110)) ('paragangliomas', 'Phenotype', 'HP:0002668', (96, 110)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('SDHB', 'Gene', '6390', (51, 55)) ('SDHB', 'Gene', (51, 55)) ('develop', 'PosReg', (78, 85)) 114322 23106811 The genetic aberration most consistently associated with poor outcome in NB is the amplification of v-myc myelocytomatosis viral related oncogene (MYCN), which occurs in 20% of primary tumors. ('MYCN', 'Gene', (147, 151)) ('associated', 'Reg', (41, 51)) ('rat', 'Species', '10116', (16, 19)) ('MYCN', 'Gene', '4613', (147, 151)) ('tumors', 'Phenotype', 'HP:0002664', (185, 191)) ('myelocytomatosis viral', 'Disease', (106, 128)) ('primary tumors', 'Disease', (177, 191)) ('tumor', 'Phenotype', 'HP:0002664', (185, 190)) ('NB', 'Phenotype', 'HP:0003006', (73, 75)) ('amplification', 'Var', (83, 96)) ('primary tumors', 'Disease', 'MESH:D009369', (177, 191)) ('myelocytomatosis viral', 'Disease', 'MESH:D001102', (106, 128)) 114323 23106811 Chromosomal aberrations as deletion of chromosomes 1p, 11q and gain of 17q are also associated with poor prognosis. ('deletion', 'Var', (27, 35)) ('gain', 'PosReg', (63, 67)) ('rat', 'Species', '10116', (16, 19)) ('Chromosomal aberrations', 'Phenotype', 'HP:0040012', (0, 23)) 114329 23106811 25-30% of all cases are related to monogenic hereditary tumor syndromes including multiple endocrine neoplasia 2 (MEN2), von Hippel-Lindau syndrome (VHL), neurofibromatosis type 1 (NF1) and the group of PGL syndromes caused by mutations in genes encoding succinate dehydrogenase (SDH) subunits and associated factors. ('endocrine neoplasia 2', 'Disease', (91, 112)) ('tumor', 'Phenotype', 'HP:0002664', (56, 61)) ('hereditary tumor', 'Disease', (45, 61)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (91, 110)) ('neurofibromatosis type 1', 'Gene', (155, 179)) ('caused by', 'Reg', (217, 226)) ('NF1', 'Gene', '4763', (181, 184)) ('PGL syndromes', 'Disease', (203, 216)) ('SDH', 'Gene', (280, 283)) ('VHL', 'Gene', '7428', (149, 152)) ('hereditary tumor', 'Disease', 'MESH:D009386', (45, 61)) ('succinate dehydrogenase', 'Gene', (255, 278)) ('NF1', 'Gene', (181, 184)) ('PGL syndromes', 'Disease', 'MESH:D010235', (203, 216)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (155, 172)) ('neurofibromatosis type 1', 'Gene', '4763', (155, 179)) ('PGL', 'Phenotype', 'HP:0002668', (203, 206)) ('endocrine neoplasia 2', 'Disease', 'MESH:D018813', (91, 112)) ('mutations', 'Var', (227, 236)) ('von Hippel-Lindau syndrome', 'Disease', (121, 147)) ('succinate dehydrogenase', 'Gene', '6390', (255, 278)) ('von Hippel-Lindau syndrome', 'Disease', 'MESH:D006623', (121, 147)) ('neoplasia', 'Phenotype', 'HP:0002664', (101, 110)) ('SDH', 'Gene', '6390', (280, 283)) ('MEN', 'Species', '9606', (114, 117)) ('VHL', 'Gene', (149, 152)) 114389 23106811 PHOX2B mutations are observed in rare hereditary forms of NB and Hirschsprung's disease. ('PHOX2B', 'Gene', (0, 6)) ("Hirschsprung's disease", 'Disease', (65, 87)) ("Hirschsprung's disease", 'Phenotype', 'HP:0002251', (65, 87)) ('PHOX2B', 'Gene', '8929', (0, 6)) ('NB', 'Phenotype', 'HP:0003006', (58, 60)) ('observed', 'Reg', (21, 29)) ("Hirschsprung's disease", 'Disease', 'MESH:D006627', (65, 87)) ('mutations', 'Var', (7, 16)) 114400 23106811 Fas resistance in NB may develop by the inactivation of caspase 8, which is absent in more than one third of NB cases, and often methylated in more than 60% of PCC. ('caspase 8', 'Gene', '841', (56, 65)) ('NB', 'Phenotype', 'HP:0003006', (109, 111)) ('caspase 8', 'Gene', (56, 65)) ('PCC', 'Phenotype', 'HP:0002666', (160, 163)) ('Fas', 'Chemical', 'MESH:C038178', (0, 3)) ('NB', 'Phenotype', 'HP:0003006', (18, 20)) ('inactivation', 'Var', (40, 52)) 114405 23106811 Underexpression of death receptor 3 (TNFRSF15) in NB has been reported previously, and correlated with the frequent deletion of chromosome region 1p36 which chromosomal aberration is also known in sporadic and MEN2A-associated PCC. ('PCC', 'Phenotype', 'HP:0002666', (227, 230)) ('rat', 'Species', '10116', (173, 176)) ('TNFRSF15', 'Gene', (37, 45)) ('MEN2A-', 'Gene', '5979', (210, 216)) ('deletion', 'Var', (116, 124)) ('MEN2A-', 'Gene', (210, 216)) ('chromosomal aberration', 'Phenotype', 'HP:0040012', (157, 179)) ('PCC', 'Disease', (227, 230)) ('NB', 'Phenotype', 'HP:0003006', (50, 52)) 114419 23106811 Among the receptors involved in axonal guidance, the underexpression of NTRK1 (TrkA) was the most common (observed in more than ten datasets) alteration in MYCN-amplifying and unfavorable NB (Figure 5). ('alteration', 'Var', (142, 152)) ('rat', 'Species', '10116', (146, 149)) ('NB', 'Phenotype', 'HP:0003006', (188, 190)) ('NTRK1', 'Gene', (72, 77)) ('unfavorable NB', 'MPA', (176, 190)) ('MYCN', 'Gene', (156, 160)) ('TrkA', 'Gene', (79, 83)) ('underexpression', 'NegReg', (53, 68)) ('MYCN', 'Gene', '4613', (156, 160)) ('NTRK1', 'Gene', '4914', (72, 77)) ('TrkA', 'Gene', '4914', (79, 83)) 114436 23106811 Previous studies confirmed that SHC binding to RET is crucial for the transforming activity of RET mutant proteins. ('RET', 'Gene', (95, 98)) ('SHC', 'Gene', '6464', (32, 35)) ('RET', 'Gene', (47, 50)) ('transforming activity', 'MPA', (70, 91)) ('SHC', 'Gene', (32, 35)) ('RET', 'Gene', '5979', (95, 98)) ('mutant', 'Var', (99, 105)) ('RET', 'Gene', '5979', (47, 50)) ('proteins', 'Protein', (106, 114)) 114448 23106811 These gene expression changes may lead to enhanced hydroxylation of HIF1-alpha. ('hydroxylation', 'MPA', (51, 64)) ('HIF1-alpha', 'Gene', '3091', (68, 78)) ('changes', 'Var', (22, 29)) ('enhanced', 'PosReg', (42, 50)) ('HIF1-alpha', 'Gene', (68, 78)) 114455 23106811 Reduced vascularisation and size of tumors were observed in PGF deficient mice; however, its effect on tumor growth and angiogenesis is controversial. ('mice', 'Species', '10090', (74, 78)) ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('tumors', 'Disease', 'MESH:D009369', (36, 42)) ('tumor', 'Disease', (103, 108)) ('Reduced', 'NegReg', (0, 7)) ('deficient', 'Var', (64, 73)) ('tumor', 'Disease', 'MESH:D009369', (36, 41)) ('size', 'CPA', (28, 32)) ('tumors', 'Phenotype', 'HP:0002664', (36, 42)) ('tumor', 'Phenotype', 'HP:0002664', (36, 41)) ('PGF', 'Protein', (60, 63)) ('vascularisation', 'CPA', (8, 23)) ('tumors', 'Disease', (36, 42)) ('tumor', 'Disease', 'MESH:D009369', (103, 108)) ('tumor', 'Disease', (36, 41)) 114555 17651553 It is well known that during laparoscopy carbon dioxide pneumoperitoneum increases intraabdominal pressure and thus reduces systemic venous return. ('reduces', 'NegReg', (116, 123)) ('carbon dioxide', 'Var', (41, 55)) ('pneumoperitoneum increases intraabdominal pressure', 'Disease', (56, 106)) ('carbon dioxide pneumoperitoneum', 'Phenotype', 'HP:0012281', (41, 72)) ('pneumoperitoneum increases intraabdominal pressure', 'Disease', 'MESH:D011027', (56, 106)) ('carbon dioxide', 'Chemical', 'MESH:D002245', (41, 55)) ('systemic venous return', 'MPA', (124, 146)) 114580 17922902 She underwent laparoscopic adrenelectomy and a missense mutation (Gly93Ser) in exon 1 of the VHL gene on chromosome 3 (p25 - p26) was shown in the patient, her father and her daughter confirming the diagnosis of VHL. ('p26', 'Gene', '23423', (125, 128)) ('Gly93Ser', 'Var', (66, 74)) ('patient', 'Species', '9606', (147, 154)) ('p25', 'Gene', '11076', (119, 122)) ('VHL', 'Disease', (212, 215)) ('p26', 'Gene', (125, 128)) ('Gly93Ser', 'SUBSTITUTION', 'None', (66, 74)) ('p25', 'Gene', (119, 122)) ('VHL', 'Gene', (93, 96)) 114604 17922902 Later, a missense mutation (Gly93Ser) in exon 1 of the VHL gene on chromosome 3 (p25 - p26) was shown in the patient, her father and her daughter. ('p25', 'Gene', '11076', (81, 84)) ('patient', 'Species', '9606', (109, 116)) ('p26', 'Gene', (87, 90)) ('Gly93Ser', 'SUBSTITUTION', 'None', (28, 36)) ('p25', 'Gene', (81, 84)) ('VHL', 'Gene', (55, 58)) ('Gly93Ser', 'Var', (28, 36)) ('p26', 'Gene', '23423', (87, 90)) 114605 17922902 The diagnosis of VHL disease was now proven based on the positive family history for pheochromocytoma and the mutation in the VHL gene. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (85, 101)) ('VHL disease', 'Disease', 'MESH:D006623', (17, 28)) ('pheochromocytoma', 'Disease', (85, 101)) ('VHL', 'Gene', (126, 129)) ('mutation', 'Var', (110, 118)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (85, 101)) ('VHL disease', 'Disease', (17, 28)) 114622 17922902 It is presumed that the genotype-phenotype correlation in VHL disease is a reflection of the altered pVHL function caused by a mutation. ('VHL disease', 'Disease', (58, 69)) ('mutation', 'Var', (127, 135)) ('VHL disease', 'Disease', 'MESH:D006623', (58, 69)) ('caused by', 'Reg', (115, 124)) 114626 17922902 Carriership of a germline mutation in the Von Hippel-Lindau gene predisposes to the VHL-disease. ('VHL-disease', 'Disease', 'MESH:D006623', (84, 95)) ('Von Hippel-Lindau', 'Gene', '7428', (42, 59)) ('Carriership', 'Var', (0, 11)) ('Von Hippel-Lindau', 'Gene', (42, 59)) ('germline mutation', 'Var', (17, 34)) ('predisposes', 'Reg', (65, 76)) ('VHL-disease', 'Disease', (84, 95)) 114627 17922902 It is a tumour suppressor gene and a tumour cell develops when inactivation of both copies of the VHL gene occurs. ('tumour', 'Disease', (8, 14)) ('tumour', 'Disease', (37, 43)) ('inactivation', 'Var', (63, 75)) ('VHL', 'Gene', (98, 101)) ('tumour', 'Phenotype', 'HP:0002664', (8, 14)) ('tumour', 'Phenotype', 'HP:0002664', (37, 43)) ('tumour', 'Disease', 'MESH:D009369', (8, 14)) ('tumour', 'Disease', 'MESH:D009369', (37, 43)) 114637 17922902 In patients with a germline mutation in the VHL gene causing its inactivation, a tumour cell can develop when the wild type allele is lost. ('tumour', 'Disease', 'MESH:D009369', (81, 87)) ('germline mutation', 'Var', (19, 36)) ('VHL', 'Gene', (44, 47)) ('tumour', 'Disease', (81, 87)) ('patients', 'Species', '9606', (3, 11)) ('tumour', 'Phenotype', 'HP:0002664', (81, 87)) 114639 17922902 In VHL disease, pheochromocytomas are solely found in type 2 caused by certain missense mutations, leading to a change in one single amino acid. ('VHL disease', 'Disease', (3, 14)) ('caused by', 'Reg', (61, 70)) ('VHL disease', 'Disease', 'MESH:D006623', (3, 14)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (16, 32)) ('missense mutations', 'Var', (79, 97)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (16, 33)) ('pheochromocytomas', 'Disease', (16, 33)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (16, 33)) ('change', 'Reg', (112, 118)) 114640 17922902 It is hypothesized that another tumourigenic mechanism exists for missense mutations in VHL type 2C (gain of function) as compared to missense mutations in VHL type 1 (loss of function). ('tumour', 'Disease', (32, 38)) ('VHL type 2C', 'Gene', (88, 99)) ('missense mutations', 'Var', (66, 84)) ('tumour', 'Phenotype', 'HP:0002664', (32, 38)) ('gain of function', 'PosReg', (101, 117)) ('tumour', 'Disease', 'MESH:D009369', (32, 38)) 114641 17922902 It is still unclear why two apparently opposing effects are caused by one and the same missense mutation, leading to different types of tumours in VHL type 2A and 2B. ('tumours', 'Phenotype', 'HP:0002664', (136, 143)) ('missense mutation', 'Var', (87, 104)) ('tumours', 'Disease', 'MESH:D009369', (136, 143)) ('tumours', 'Disease', (136, 143)) ('VHL', 'Gene', (147, 150)) ('tumour', 'Phenotype', 'HP:0002664', (136, 142)) 114642 17922902 From in vivo experiments in mice, Hoffmann et al., has described a group of VHL type 2C mutants which all retained the ability to interact with HIF and to down regulate HIF target genes when reintroduced into pVHL defective tumour cells. ('ability', 'MPA', (119, 126)) ('tumour', 'Phenotype', 'HP:0002664', (224, 230)) ('mice', 'Species', '10090', (28, 32)) ('down regulate', 'NegReg', (155, 168)) ('tumour', 'Disease', 'MESH:D009369', (224, 230)) ('tumour', 'Disease', (224, 230)) ('interact', 'Interaction', (130, 138)) ('VHL type 2C', 'Gene', (76, 87)) ('mutants', 'Var', (88, 95)) 114643 17922902 This provides a biologically conceivable mechanism to account for the low risk of haemangioblastomas associated with these mutants. ('haemangioblastomas', 'Disease', (82, 100)) ('mutants', 'Var', (123, 130)) ('haemangioblastomas', 'Disease', 'MESH:D018325', (82, 100)) 114644 17922902 Furthermore all type 2C mutants showed decreased fibronectin binding which is required for extracellular matrix formation. ('decreased fibronectin', 'Phenotype', 'HP:0032463', (39, 60)) ('mutants', 'Var', (24, 31)) ('fibronectin', 'Gene', (49, 60)) ('fibronectin', 'Gene', '2335', (49, 60)) ('decreased', 'NegReg', (39, 48)) 114655 17922902 In one hundred percent of families with a classical presentation of more than one affected family member or a classic sporadic patient with multiple VHL-related tumours, a germline mutation is found in the VHL-gene. ('patient', 'Species', '9606', (127, 134)) ('VHL-related tumours', 'Disease', (149, 168)) ('tumour', 'Phenotype', 'HP:0002664', (161, 167)) ('VHL-gene', 'Gene', (206, 214)) ('tumours', 'Phenotype', 'HP:0002664', (161, 168)) ('VHL-related tumours', 'Disease', 'MESH:D006623', (149, 168)) ('germline mutation', 'Var', (172, 189)) 114658 17922902 Four categories of patients with VHL disease are eligible for periodical clinical evaluation: 1) carriers of a VHL-gene germline mutation 2) first and second degree family members in a VHL family with no known germline mutation, 3) first and second degree family members of patients who decline DNA analysis and 4) patients with a typical VHL tumour without a germline mutation, but with a strong suspicion of hereditary tumours. ('tumour', 'Phenotype', 'HP:0002664', (343, 349)) ('VHL disease', 'Disease', 'MESH:D006623', (33, 44)) ('patients', 'Species', '9606', (19, 27)) ('VHL tumour', 'Disease', 'MESH:D006623', (339, 349)) ('mutation', 'Var', (129, 137)) ('hereditary tumours', 'Disease', (410, 428)) ('patients', 'Species', '9606', (274, 282)) ('DNA', 'MPA', (295, 298)) ('VHL-gene', 'Gene', (111, 119)) ('tumour', 'Phenotype', 'HP:0002664', (421, 427)) ('VHL disease', 'Disease', (33, 44)) ('patients', 'Species', '9606', (315, 323)) ('hereditary tumours', 'Disease', 'MESH:D009386', (410, 428)) ('tumours', 'Phenotype', 'HP:0002664', (421, 428)) ('VHL tumour', 'Disease', (339, 349)) 114665 34020699 Hereditary pheochromocytoma/paraganglioma syndrome with a novel mutation in the succinate dehydrogenase subunit B gene in a Japanese family: two case reports Pheochromocytoma and paraganglioma caused by succinate dehydrogenase gene mutations is called hereditary pheochromocytoma/paraganglioma syndrome. ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (158, 174)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (11, 27)) ('succinate dehydrogenase', 'Gene', '6390', (203, 226)) ('Hereditary pheochromocytoma/paraganglioma syndrome', 'Disease', 'MESH:D010673', (0, 50)) ('mutation', 'Var', (64, 72)) ('paraganglioma', 'Phenotype', 'HP:0002668', (179, 192)) ('succinate dehydrogenase', 'Gene', (203, 226)) ('Pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (158, 192)) ('Hereditary pheochromocytoma/paraganglioma syndrome', 'Disease', (0, 50)) ('hereditary pheochromocytoma/paraganglioma syndrome', 'Disease', 'MESH:D010673', (252, 302)) ('caused by', 'Reg', (193, 202)) ('paraganglioma', 'Phenotype', 'HP:0002668', (28, 41)) ('succinate dehydrogenase', 'Gene', '6390', (80, 103)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (263, 279)) ('mutations', 'Var', (232, 241)) ('hereditary pheochromocytoma/paraganglioma syndrome', 'Disease', (252, 302)) ('succinate dehydrogenase', 'Gene', (80, 103)) ('paraganglioma', 'Phenotype', 'HP:0002668', (280, 293)) 114666 34020699 In particular, succinate dehydrogenase subunit B mutations are important because they are strongly associated with the malignant behavior of pheochromocytoma and paraganglioma . ('pheochromocytoma', 'Disease', (141, 157)) ('associated with', 'Reg', (99, 114)) ('paraganglioma', 'Disease', 'MESH:D010235', (162, 175)) ('mutations', 'Var', (49, 58)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (141, 157)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (141, 157)) ('malignant behavior', 'CPA', (119, 137)) ('paraganglioma', 'Phenotype', 'HP:0002668', (162, 175)) ('succinate dehydrogenase', 'Gene', '6390', (15, 38)) ('paraganglioma', 'Disease', (162, 175)) ('succinate dehydrogenase', 'Gene', (15, 38)) 114667 34020699 This is a case report of a family of hereditary pheochromocytoma/paraganglioma syndrome carrying a novel mutation in succinate dehydrogenase subunit B. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (48, 64)) ('hereditary pheochromocytoma/paraganglioma syndrome', 'Disease', 'MESH:D010673', (37, 87)) ('mutation', 'Var', (105, 113)) ('succinate dehydrogenase', 'Gene', '6390', (117, 140)) ('hereditary pheochromocytoma/paraganglioma syndrome', 'Disease', (37, 87)) ('paraganglioma', 'Phenotype', 'HP:0002668', (65, 78)) ('succinate dehydrogenase', 'Gene', (117, 140)) 114669 34020699 Succinate dehydrogenase subunit B genetic testing detected a splice-site mutation, c.424-2delA, in her germline and paraganglioma tissue. ('paraganglioma', 'Phenotype', 'HP:0002668', (116, 129)) ('c.424-2delA', 'Mutation', 'c.424-2delA', (83, 94)) ('Succinate dehydrogenase', 'Gene', (0, 23)) ('paraganglioma', 'Disease', (116, 129)) ('c.424-2delA', 'Var', (83, 94)) ('paraganglioma', 'Disease', 'MESH:D010235', (116, 129)) ('Succinate dehydrogenase', 'Gene', '6390', (0, 23)) 114671 34020699 We detected a novel succinate dehydrogenase subunit B mutation, c.424-2delA, in a Japanese family afflicted with hereditary pheochromocytoma/paraganglioma syndrome and found the mutation to be responsible for hereditary pheochromocytoma/paraganglioma syndrome. ('hereditary pheochromocytoma/paraganglioma syndrome', 'Disease', 'MESH:D010673', (113, 163)) ('responsible', 'Reg', (193, 204)) ('succinate dehydrogenase', 'Gene', '6390', (20, 43)) ('paraganglioma', 'Phenotype', 'HP:0002668', (237, 250)) ('hereditary pheochromocytoma/paraganglioma syndrome', 'Disease', (113, 163)) ('hereditary pheochromocytoma/paraganglioma syndrome', 'Disease', 'MESH:D010673', (209, 259)) ('succinate dehydrogenase', 'Gene', (20, 43)) ('paraganglioma', 'Phenotype', 'HP:0002668', (141, 154)) ('hereditary pheochromocytoma/paraganglioma syndrome', 'Disease', (209, 259)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (220, 236)) ('c.424-2delA', 'Mutation', 'c.424-2delA', (64, 75)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (124, 140)) ('c.424-2delA', 'Var', (64, 75)) 114672 34020699 This case emphasizes the importance of performing genetic testing for patients with pheochromocytoma and paraganglioma suspected of harboring the succinate dehydrogenase subunit B mutation (that is, metastatic, extra-adrenal, multiple, early onset, and family history of pheochromocytoma and paraganglioma) and offer surveillance screening to mutation carriers. ('patients', 'Species', '9606', (70, 78)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (271, 287)) ('paraganglioma', 'Disease', 'MESH:D010235', (292, 305)) ('paraganglioma', 'Phenotype', 'HP:0002668', (292, 305)) ('pheochromocytoma', 'Disease', (84, 100)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (84, 100)) ('paraganglioma', 'Disease', 'MESH:D010235', (105, 118)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (84, 100)) ('paraganglioma', 'Disease', (292, 305)) ('succinate dehydrogenase', 'Gene', '6390', (146, 169)) ('paraganglioma', 'Phenotype', 'HP:0002668', (105, 118)) ('succinate dehydrogenase', 'Gene', (146, 169)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (271, 287)) ('mutation', 'Var', (180, 188)) ('paraganglioma', 'Disease', (105, 118)) ('pheochromocytoma', 'Disease', (271, 287)) 114674 34020699 Up to 40% of patients with PCC/PGL (PPGL) carry a germline mutation. ('PGL', 'Phenotype', 'HP:0002668', (37, 40)) ('germline mutation', 'Var', (50, 67)) ('PPGL', 'Chemical', '-', (36, 40)) ('patients', 'Species', '9606', (13, 21)) ('PCC/PGL', 'Gene', (27, 34)) ('PGL', 'Phenotype', 'HP:0002668', (31, 34)) ('PCC', 'Phenotype', 'HP:0002666', (27, 30)) 114677 34020699 In particular, SDHB mutations are important because they are highly associated with the malignant behavior of PPGL. ('SDHB', 'Gene', '6390', (15, 19)) ('associated with', 'Reg', (68, 83)) ('malignant behavior', 'CPA', (88, 106)) ('SDHB', 'Gene', (15, 19)) ('PPGL', 'Disease', (110, 114)) ('PGL', 'Phenotype', 'HP:0002668', (111, 114)) ('PPGL', 'Chemical', '-', (110, 114)) ('mutations', 'Var', (20, 29)) 114680 34020699 Therefore, patients with HPPS should be actively tested for SDHB mutations, and information on a novel mutation should be reported. ('HPPS', 'Disease', 'None', (25, 29)) ('HPPS', 'Disease', (25, 29)) ('SDHB', 'Gene', '6390', (60, 64)) ('SDHB', 'Gene', (60, 64)) ('tested', 'Reg', (49, 55)) ('patients', 'Species', '9606', (11, 19)) ('mutations', 'Var', (65, 74)) 114681 34020699 Herein, we report a family of HPPS with a novel SDHB mutation, c.424-2delA. ('HPPS', 'Disease', (30, 34)) ('c.424-2delA', 'Mutation', 'c.424-2delA', (63, 74)) ('c.424-2delA', 'Var', (63, 74)) ('SDHB', 'Gene', '6390', (48, 52)) ('SDHB', 'Gene', (48, 52)) ('HPPS', 'Disease', 'None', (30, 34)) 114696 34020699 Immunohistochemical (IHC) staining of SDHA yielded positive results, and IHC staining of SDHB yielded negative results, suggesting an SDHB, SDHC, or SDHD mutation (Fig. ('SDHD', 'Gene', '6392', (149, 153)) ('SDHA', 'Gene', (38, 42)) ('SDHC', 'Gene', (140, 144)) ('SDHD', 'Gene', (149, 153)) ('SDHC', 'Gene', '6391', (140, 144)) ('mutation', 'Var', (154, 162)) ('SDHB', 'Gene', '6390', (89, 93)) ('SDHB', 'Gene', '6390', (134, 138)) ('SDHB', 'Gene', (134, 138)) ('SDHA', 'Gene', '6389', (38, 42)) ('SDHB', 'Gene', (89, 93)) 114699 34020699 The results of polymerase chain reaction (PCR)-direct sequencing method, conducted as described previously, showed that she had heterozygous germline mutations in the SDHB intron 4/exon 5 junction (c.424-2delA) (Fig. ('c.424-2delA', 'Var', (198, 209)) ('SDHB', 'Gene', '6390', (167, 171)) ('c.424-2delA', 'Mutation', 'c.424-2delA', (198, 209)) ('SDHB', 'Gene', (167, 171)) 114713 34020699 SDHB genetic testing revealed that both primary and recurrent PGLs harbored the mutation c.424-2delA, which is the same as the PGL of the daughter (Fig. ('c.424-2delA', 'Var', (89, 100)) ('PGL', 'Phenotype', 'HP:0002668', (127, 130)) ('PGL', 'Phenotype', 'HP:0002668', (62, 65)) ('SDHB', 'Gene', '6390', (0, 4)) ('c.424-2delA', 'Mutation', 'c.424-2delA', (89, 100)) ('SDHB', 'Gene', (0, 4)) 114715 34020699 Although our two cases had the same SDHB mutation, phenotypes such as the age of onset, biochemical phenotype, and metastasis were different (Table 2). ('mutation', 'Var', (41, 49)) ('SDHB', 'Gene', (36, 40)) ('SDHB', 'Gene', '6390', (36, 40)) 114716 34020699 The son of patient 2 (III-1) might have the same SDHB mutation, given his family history; however, he did not provide consent to undergo genetic testing. ('SDHB', 'Gene', (49, 53)) ('patient', 'Species', '9606', (11, 18)) ('mutation', 'Var', (54, 62)) ('SDHB', 'Gene', '6390', (49, 53)) 114717 34020699 We encountered a family of HPPS with a novel SDHB splice-site mutation (c.424-2delA). ('HPPS', 'Disease', 'None', (27, 31)) ('c.424-2delA', 'Mutation', 'c.424-2delA', (72, 83)) ('HPPS', 'Disease', (27, 31)) ('c.424-2delA', 'Var', (72, 83)) ('SDHB', 'Gene', '6390', (45, 49)) ('SDHB', 'Gene', (45, 49)) 114718 34020699 As the SDHB mutation is strongly associated with the malignant behavior of PPGL, performing genetic testing in patients with PPGL suspected of harboring SDHB mutations is important. ('SDHB', 'Gene', (7, 11)) ('PPGL', 'Disease', (75, 79)) ('malignant behavior', 'CPA', (53, 71)) ('SDHB', 'Gene', (153, 157)) ('SDHB', 'Gene', '6390', (153, 157)) ('patients', 'Species', '9606', (111, 119)) ('PGL', 'Phenotype', 'HP:0002668', (126, 129)) ('PPGL', 'Chemical', '-', (75, 79)) ('SDHB', 'Gene', '6390', (7, 11)) ('mutation', 'Var', (12, 20)) ('PGL', 'Phenotype', 'HP:0002668', (76, 79)) ('PPGL', 'Chemical', '-', (125, 129)) ('associated with', 'Reg', (33, 48)) 114719 34020699 Identification of a novel disease causing SDHB mutation may contribute to expanding our knowledge about PPGL and facilitate more patient-tailored management. ('disease causing', 'Reg', (26, 41)) ('mutation', 'Var', (47, 55)) ('SDHB', 'Gene', '6390', (42, 46)) ('PGL', 'Phenotype', 'HP:0002668', (105, 108)) ('PPGL', 'Chemical', '-', (104, 108)) ('SDHB', 'Gene', (42, 46)) ('patient', 'Species', '9606', (129, 136)) 114720 34020699 To date, 289 unique SDHB mutations have been described. ('mutations', 'Var', (25, 34)) ('SDHB', 'Gene', '6390', (20, 24)) ('SDHB', 'Gene', (20, 24)) 114722 34020699 Germline SDHB mutations are inherited in an autosomal dominant manner, and their penetrance is approximately 20% by age 50 years and 40% by age 70 years. ('SDHB', 'Gene', '6390', (9, 13)) ('SDHB', 'Gene', (9, 13)) ('mutations', 'Var', (14, 23)) 114723 34020699 The phenotype of PPGL with SDHB mutation is often characterized as metastatic, with extra-adrenal development (especially abdominal PGL), and multiple and early onset. ('metastatic', 'CPA', (67, 77)) ('extra-adrenal development', 'CPA', (84, 109)) ('mutation', 'Var', (32, 40)) ('PPGL', 'Chemical', '-', (17, 21)) ('SDHB', 'Gene', '6390', (27, 31)) ('PGL', 'Phenotype', 'HP:0002668', (18, 21)) ('SDHB', 'Gene', (27, 31)) ('PGL', 'Phenotype', 'HP:0002668', (132, 135)) 114725 34020699 In the present cases, as the daughter had early-onset abdominal PGL with a family history of metastatic PGL, SDHB mutation was strongly suspected. ('metastatic PGL', 'Disease', (93, 107)) ('early-onset abdominal PGL', 'Disease', (42, 67)) ('PGL', 'Phenotype', 'HP:0002668', (64, 67)) ('SDHB', 'Gene', '6390', (109, 113)) ('SDHB', 'Gene', (109, 113)) ('PGL', 'Phenotype', 'HP:0002668', (104, 107)) ('mutation', 'Var', (114, 122)) 114726 34020699 In addition, a false-negative 123I-MIBG scintigraphy, as observed in the daughter, is frequently associated with SDHB mutations. ('SDHB', 'Gene', '6390', (113, 117)) ('mutations', 'Var', (118, 127)) ('SDHB', 'Gene', (113, 117)) ('123I-MIBG', 'Chemical', '-', (30, 39)) ('associated', 'Reg', (97, 107)) 114727 34020699 SDHB genetic testing identified the novel splice-site mutation c.424-2delA in her germline, PGL tissue, and her father's primary and recurrent PGL tissue. ('c.424-2delA', 'Mutation', 'c.424-2delA', (63, 74)) ('PGL', 'Phenotype', 'HP:0002668', (92, 95)) ('PGL', 'Phenotype', 'HP:0002668', (143, 146)) ('c.424-2delA', 'Var', (63, 74)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) 114728 34020699 As for her PGL and the recurrent PGL of her father, LOH of SDHB was suggested, which indicated tumor formation by biallelic inactivation of SDHB. ('PGL', 'Phenotype', 'HP:0002668', (33, 36)) ('PGL', 'Phenotype', 'HP:0002668', (11, 14)) ('biallelic inactivation', 'Var', (114, 136)) ('tumor', 'Disease', 'MESH:D009369', (95, 100)) ('SDHB', 'Gene', '6390', (59, 63)) ('SDHB', 'Gene', '6390', (140, 144)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('SDHB', 'Gene', (59, 63)) ('SDHB', 'Gene', (140, 144)) ('tumor', 'Disease', (95, 100)) 114729 34020699 To the best of our knowledge, this is the first report showing that the SDHB mutation c.424-2delA is responsible for PPGL. ('responsible', 'Reg', (101, 112)) ('SDHB', 'Gene', (72, 76)) ('c.424-2delA', 'Mutation', 'c.424-2delA', (86, 97)) ('c.424-2delA', 'Var', (86, 97)) ('PPGL', 'Disease', (117, 121)) ('PGL', 'Phenotype', 'HP:0002668', (118, 121)) ('PPGL', 'Chemical', '-', (117, 121)) ('SDHB', 'Gene', '6390', (72, 76)) 114730 34020699 Multiple cases of different phenotypes within the same family with the same SDHB mutation have been reported. ('SDHB', 'Gene', '6390', (76, 80)) ('mutation', 'Var', (81, 89)) ('SDHB', 'Gene', (76, 80)) 114731 34020699 Many reports have indicated there is no genotype-phenotype correlation in the SDHB mutant PPGL. ('PPGL', 'Chemical', '-', (90, 94)) ('PPGL', 'Gene', (90, 94)) ('SDHB', 'Gene', '6390', (78, 82)) ('mutant', 'Var', (83, 89)) ('SDHB', 'Gene', (78, 82)) ('PGL', 'Phenotype', 'HP:0002668', (91, 94)) 114732 34020699 reported that a specific missense mutation in SDHB (p.Ile127Ser) could have a marked effect on protein structure, resulting in increased penetrance and risk of PPGL, suggesting the possibility of genotype-phenotype correlation in SDHB mutation. ('PPGL', 'Chemical', '-', (160, 164)) ('missense', 'Var', (25, 33)) ('SDHB', 'Gene', '6390', (46, 50)) ('SDHB', 'Gene', (46, 50)) ('penetrance', 'MPA', (137, 147)) ('PGL', 'Phenotype', 'HP:0002668', (161, 164)) ('p.Ile127Ser', 'Var', (52, 63)) ('protein structure', 'MPA', (95, 112)) ('SDHB', 'Gene', '6390', (230, 234)) ('p.Ile127Ser', 'Mutation', 'rs786201095', (52, 63)) ('effect', 'Reg', (85, 91)) ('SDHB', 'Gene', (230, 234)) ('risk', 'Reg', (152, 156)) ('increased', 'PosReg', (127, 136)) ('PPGL', 'Disease', (160, 164)) 114733 34020699 Our cases indicate the importance of surveillance screening in SDHB mutation carriers, although there is no widely agreed consensus regarding optimal surveillance for asymptomatic carriers and those in whom the presenting tumor has been resected. ('SDHB', 'Gene', (63, 67)) ('tumor', 'Disease', 'MESH:D009369', (222, 227)) ('mutation', 'Var', (68, 76)) ('tumor', 'Phenotype', 'HP:0002664', (222, 227)) ('tumor', 'Disease', (222, 227)) ('SDHB', 'Gene', '6390', (63, 67)) 114734 34020699 Surveillance screening in SDHB mutation carriers enables early detection and timely resection of SDHB-associated tumors, reducing the risk of metastatic disease. ('SDHB', 'Gene', (97, 101)) ('tumors', 'Disease', 'MESH:D009369', (113, 119)) ('tumors', 'Disease', (113, 119)) ('tumors', 'Phenotype', 'HP:0002664', (113, 119)) ('mutation', 'Var', (31, 39)) ('SDHB', 'Gene', '6390', (26, 30)) ('SDHB', 'Gene', (26, 30)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('SDHB', 'Gene', '6390', (97, 101)) 114735 34020699 In our cases, if SDHB genetic testing had been performed on the father with metastatic PGL, and SDHB mutation had been identified, surveillance screening might have revealed the PGL in the daughter before it became secretory and/or symptomatic. ('revealed', 'Reg', (165, 173)) ('SDHB', 'Gene', '6390', (17, 21)) ('PGL', 'Phenotype', 'HP:0002668', (178, 181)) ('PGL', 'Disease', (178, 181)) ('PGL', 'Phenotype', 'HP:0002668', (87, 90)) ('SDHB', 'Gene', '6390', (96, 100)) ('SDHB', 'Gene', (17, 21)) ('SDHB', 'Gene', (96, 100)) ('mutation', 'Var', (101, 109)) 114738 34020699 However, there is no official guideline for the surveillance screening of patients with SDHB mutations. ('SDHB', 'Gene', '6390', (88, 92)) ('patients', 'Species', '9606', (74, 82)) ('mutations', 'Var', (93, 102)) ('SDHB', 'Gene', (88, 92)) 114739 34020699 Some reported ideas of surveillance screening in SDHB mutation carriers are presented in Table 3. ('SDHB', 'Gene', (49, 53)) ('mutation', 'Var', (54, 62)) ('SDHB', 'Gene', '6390', (49, 53)) 114740 34020699 All first-degree relatives are recommended to undergo targeted SDHB genetic testing of the proband's mutation with genetic counseling; however, children should be offered testing if they are recommended surveillance. ('children', 'Species', '9606', (144, 152)) ('SDHB', 'Gene', (63, 67)) ('mutation', 'Var', (101, 109)) ('SDHB', 'Gene', '6390', (63, 67)) 114741 34020699 We recommended targeted SDHB genetic testing to her older brother (III-1), but he did not provide consent to undergo genetic testing. ('SDHB', 'Gene', (24, 28)) ('genetic', 'Var', (29, 36)) ('SDHB', 'Gene', '6390', (24, 28)) 114742 34020699 In conclusion, we detected a novel SDHB mutation, c.424-2delA, in a Japanese family afflicted with HPPS and found the mutation to be responsible for HPPS. ('HPPS', 'Disease', (99, 103)) ('SDHB', 'Gene', (35, 39)) ('HPPS', 'Disease', 'None', (99, 103)) ('HPPS', 'Disease', 'None', (149, 153)) ('HPPS', 'Disease', (149, 153)) ('c.424-2delA', 'Mutation', 'c.424-2delA', (50, 61)) ('c.424-2delA', 'Var', (50, 61)) ('SDHB', 'Gene', '6390', (35, 39)) 114743 34020699 Since SDHB mutation is associated with the malignant behavior of PPGL, it is important to perform genetic testing for patients suspected of harboring the SDHB mutation (that is, metastatic, extra-adrenal, multiple, early onset, and family history of PPGL) and offer surveillance screening to mutation carriers. ('mutation', 'Var', (11, 19)) ('patients', 'Species', '9606', (118, 126)) ('PGL', 'Phenotype', 'HP:0002668', (251, 254)) ('SDHB', 'Gene', '6390', (154, 158)) ('PPGL', 'Disease', (65, 69)) ('PPGL', 'Chemical', '-', (250, 254)) ('mutation', 'Var', (159, 167)) ('PGL', 'Phenotype', 'HP:0002668', (66, 69)) ('SDHB', 'Gene', '6390', (6, 10)) ('SDHB', 'Gene', (154, 158)) ('metastatic', 'CPA', (178, 188)) ('associated', 'Reg', (23, 33)) ('SDHB', 'Gene', (6, 10)) ('PPGL', 'Chemical', '-', (65, 69)) 114744 34020699 PPGL Pheochromocytoma and paraganglioma HPPS Hereditary pheochromocytoma/paraganglioma syndrome SDHB Succinate dehydrogenase subunit B PCC Pheochromocytoma PGL Paraganglioma SDH Succinate dehydrogenase HIF-1alpha Hypoxia-inducible factor-alpha CT Computed tomography MRI Magnetic resonance imaging MIBG Metaiodobenzylguanidine FDG-PET 18F-fluorodeoxyglucose-positron emission tomography GAPP Grading system for adrenal pheochromocytoma and paraganglioma IHC Immunohistochemistry PCR Polymerase chain reaction LOH Loss of heterozygosity RH conceived of the study and wrote the manuscript with support from YT, CS, KI, and MN. ('paraganglioma', 'Phenotype', 'HP:0002668', (26, 39)) ('SDH', 'Gene', '6390', (96, 99)) ('MN', 'CellLine', 'CVCL:U508', (621, 623)) ('PGL', 'Phenotype', 'HP:0002668', (1, 4)) ('18F-fluorodeoxyglucose', 'Chemical', 'MESH:D019788', (335, 357)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (56, 72)) ('Succinate dehydrogenase', 'Gene', (178, 201)) ('Succinate dehydrogenase', 'Gene', '6390', (101, 124)) ('Pheochromocytoma', 'Disease', (5, 21)) ('HIF-1alpha', 'Gene', '3091', (202, 212)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (139, 155)) ('Metaiodobenzylguanidine', 'Chemical', 'MESH:D019797', (303, 326)) ('HPPS', 'Disease', 'None', (40, 44)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (5, 21)) ('SDH', 'Gene', '6390', (174, 177)) ('Succinate dehydrogenase', 'Gene', '6390', (178, 201)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (419, 435)) ('MIBG', 'Chemical', 'MESH:D019797', (298, 302)) ('SDHB', 'Gene', (96, 100)) ('Hereditary pheochromocytoma/paraganglioma syndrome', 'Disease', (45, 95)) ('SDH', 'Gene', (96, 99)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (160, 173)) ('Pheochromocytoma', 'Disease', (139, 155)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (139, 155)) ('PPGL', 'Chemical', '-', (0, 4)) ('PGL', 'Phenotype', 'HP:0002668', (156, 159)) ('Paraganglioma', 'Disease', (160, 173)) ('Hypoxia', 'Disease', 'MESH:D000860', (213, 220)) ('HIF-1alpha', 'Gene', (202, 212)) ('Hypoxia', 'Disease', (213, 220)) ('adrenal pheochromocytoma', 'Phenotype', 'HP:0006748', (411, 435)) ('SDH', 'Gene', (174, 177)) ('PCC', 'Phenotype', 'HP:0002666', (135, 138)) ('adrenal pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (411, 453)) ('SDHB', 'Gene', '6390', (96, 100)) ('Pheochromocytoma and paraganglioma', 'Disease', 'MESH:D010673', (5, 39)) ('CS', 'Gene', '1431', (609, 611)) ('Hereditary pheochromocytoma/paraganglioma syndrome', 'Disease', 'MESH:D010673', (45, 95)) ('paraganglioma', 'Phenotype', 'HP:0002668', (440, 453)) ('Pheochromocytoma', 'Disease', 'MESH:D010673', (5, 21)) ('paraganglioma', 'Phenotype', 'HP:0002668', (73, 86)) ('Succinate dehydrogenase', 'Gene', (101, 124)) ('HPPS', 'Disease', (40, 44)) ('Loss', 'Var', (513, 517)) ('Paraganglioma', 'Disease', 'MESH:D010235', (160, 173)) 114791 32871646 Endocrinologic tests suggested ACTH-independent CS due to adrenocortical tumor with the following findings: elevated 24-hour urinary free cortisol (UFC), 1529.2 mug/day (normal, 58.0-403.0 mug/day); elevated midnight serum cortisol level, 26.4 mug/dL (normal, <2.0 mug/dL); and unsuppressed serum cortisol level after low-dose dexamethasone suppression test (DST), 30.9 mug/dL (normal, <5.0 mug/dL). ('adrenocortical tumor', 'Disease', (58, 78)) ('ACTH', 'Gene', '5443', (31, 35)) ('midnight serum cortisol level', 'MPA', (208, 237)) ('cortisol', 'Chemical', 'MESH:D006854', (297, 305)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('CS', 'Phenotype', 'HP:0003118', (48, 50)) ('dexamethasone', 'Chemical', 'MESH:D003907', (327, 340)) ('cortisol', 'Chemical', 'MESH:D006854', (223, 231)) ('adrenocortical tumor', 'Disease', 'MESH:D018268', (58, 78)) ('1529.2 mug/day', 'Var', (154, 168)) ('cortisol', 'Chemical', 'MESH:D006854', (138, 146)) ('elevated', 'PosReg', (199, 207)) ('CS', 'Gene', '1431', (48, 50)) ('elevated', 'PosReg', (108, 116)) ('unsuppressed serum cortisol', 'Phenotype', 'HP:0008163', (278, 305)) ('ACTH', 'Gene', (31, 35)) 114856 31828097 Unfortunately, tumor manipulation during operation can trigger uncontrolled release of catecholamines that may lead to potentially lethal hypertensive crises and arrhythmias. ('arrhythmias', 'Disease', 'MESH:D001145', (162, 173)) ('arrhythmias', 'Disease', (162, 173)) ('arrhythmias', 'Phenotype', 'HP:0011675', (162, 173)) ('hypertensive crises', 'Phenotype', 'HP:0100735', (138, 157)) ('hypertensive', 'Disease', 'MESH:D006973', (138, 150)) ('uncontrolled release of catecholamines', 'MPA', (63, 101)) ('arrhythmia', 'Phenotype', 'HP:0011675', (162, 172)) ('tumor', 'Phenotype', 'HP:0002664', (15, 20)) ('hypertensive', 'Disease', (138, 150)) ('manipulation', 'Var', (21, 33)) ('arrhythmia', 'Disease', 'MESH:D001145', (162, 172)) ('catecholamines', 'Chemical', 'MESH:D002395', (87, 101)) ('arrhythmia', 'Disease', (162, 172)) ('lead to', 'Reg', (111, 118)) 114874 30967136 We identified a total of 16 candidate genes (MYH15, CSP1, MYH3, PTGES3L, CSGALNACT2, NMD3, IFI44, GMCL1, LSP1, PPFIBP2, RBL2, MAGED1, CNIH3, STRA6, SLC6A13, and ATM) whose variants potentially influence their expression (cis-effect). ('expression', 'MPA', (209, 219)) ('influence', 'Reg', (193, 202)) ('CSP1', 'Gene', (52, 56)) ('RBL2', 'Gene', '5934', (120, 124)) ('variants', 'Var', (172, 180)) ('ATM', 'Gene', (161, 164)) ('MAGED1', 'Gene', (126, 132)) ('MYH15', 'Gene', '22989', (45, 50)) ('MYH15', 'Gene', (45, 50)) ('CNIH3', 'Gene', '149111', (134, 139)) ('IFI44', 'Gene', '10561', (91, 96)) ('PTGES3L', 'Gene', (64, 71)) ('MYH3', 'Gene', (58, 62)) ('LSP1', 'Gene', (105, 109)) ('GMCL1', 'Gene', (98, 103)) ('STRA6', 'Gene', '64220', (141, 146)) ('LSP1', 'Gene', '4046', (105, 109)) ('NMD3', 'Gene', (85, 89)) ('CSGALNACT2', 'Gene', '55454', (73, 83)) ('MYH3', 'Gene', '4621', (58, 62)) ('MAGED1', 'Gene', '9500', (126, 132)) ('SLC6A13', 'Gene', (148, 155)) ('NMD3', 'Gene', '51068', (85, 89)) ('ATM', 'Gene', '472', (161, 164)) ('CNIH3', 'Gene', (134, 139)) ('CSGALNACT2', 'Gene', (73, 83)) ('PPFIBP2', 'Gene', (111, 118)) ('IFI44', 'Gene', (91, 96)) ('CSP1', 'Gene', '1827', (52, 56)) ('STRA6', 'Gene', (141, 146)) ('GMCL1', 'Gene', '64395', (98, 103)) ('PPFIBP2', 'Gene', '8495', (111, 118)) ('RBL2', 'Gene', (120, 124)) ('PTGES3L', 'Gene', '100885848', (64, 71)) ('SLC6A13', 'Gene', '6540', (148, 155)) 114875 30967136 The strongest cis-effect of loss-of-function variants was found in MYH15, CSP1, and MYH3, and several likely pathogenic variants in these genes associated with CPGLs were predicted. ('MYH15', 'Gene', (67, 72)) ('MYH3', 'Gene', '4621', (84, 88)) ('CPGLs', 'Chemical', '-', (160, 165)) ('variants', 'Var', (45, 53)) ('loss-of-function', 'NegReg', (28, 44)) ('CPGLs', 'Disease', (160, 165)) ('MYH15', 'Gene', '22989', (67, 72)) ('CSP1', 'Gene', '1827', (74, 78)) ('CSP1', 'Gene', (74, 78)) ('CPGLs', 'Phenotype', 'HP:0100635', (160, 165)) ('MYH3', 'Gene', (84, 88)) 114887 30967136 Germline variants in the SDHB, SDHC, SDHD, RET, and VHL genes were associated with carotid paragangliomas. ('SDHC', 'Gene', (31, 35)) ('RET', 'Gene', (43, 46)) ('carotid paragangliomas', 'Phenotype', 'HP:0100635', (83, 105)) ('carotid paragangliomas', 'Disease', (83, 105)) ('variants', 'Var', (9, 17)) ('VHL', 'Gene', (52, 55)) ('carotid paraganglioma', 'Phenotype', 'HP:0100635', (83, 104)) ('SDHD', 'Gene', '6392', (37, 41)) ('SDHB', 'Gene', '6390', (25, 29)) ('associated', 'Reg', (67, 77)) ('SDHC', 'Gene', '6391', (31, 35)) ('paragangliomas', 'Phenotype', 'HP:0002668', (91, 105)) ('paraganglioma', 'Phenotype', 'HP:0002668', (91, 104)) ('VHL', 'Gene', '7428', (52, 55)) ('glioma', 'Phenotype', 'HP:0009733', (98, 104)) ('SDHD', 'Gene', (37, 41)) ('SDHB', 'Gene', (25, 29)) ('RET', 'Gene', '5979', (43, 46)) ('carotid paragangliomas', 'Disease', 'MESH:D002345', (83, 105)) 114888 30967136 Somatic variants in these genes, as well as ones in SDHA, SDHAF2, IDH1, NF1, MEN1, and KIF1 have also been described in sporadic CPGLs. ('SDHA', 'Gene', '6389', (58, 62)) ('NF1', 'Gene', (72, 75)) ('IDH1', 'Gene', '3417', (66, 70)) ('SDHAF2', 'Gene', '54949', (58, 64)) ('described', 'Reg', (107, 116)) ('SDHAF2', 'Gene', (58, 64)) ('NF1', 'Gene', '4763', (72, 75)) ('CPGLs', 'Chemical', '-', (129, 134)) ('KIF1', 'Gene', (87, 91)) ('SDHA', 'Gene', (52, 56)) ('CPGLs', 'Disease', (129, 134)) ('SDHA', 'Gene', (58, 62)) ('variants', 'Var', (8, 16)) ('CPGLs', 'Phenotype', 'HP:0100635', (129, 134)) ('MEN1', 'Gene', (77, 81)) ('MEN1', 'Gene', '4221', (77, 81)) ('IDH1', 'Gene', (66, 70)) ('SDHA', 'Gene', '6389', (52, 56)) 114889 30967136 Germline and somatic variants in SDHx genes are often found in head and neck paragangliomas. ('variants', 'Var', (21, 29)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (72, 91)) ('SDH', 'Gene', (33, 36)) ('paraganglioma', 'Phenotype', 'HP:0002668', (77, 90)) ('SDH', 'Gene', '6390', (33, 36)) ('found', 'Reg', (54, 59)) ('neck paragangliomas', 'Disease', (72, 91)) ('glioma', 'Phenotype', 'HP:0009733', (84, 90)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (63, 91)) ('paragangliomas', 'Phenotype', 'HP:0002668', (77, 91)) 114892 30967136 Dysfunctional SDH resulting from genetic or epigenetic alterations can contribute to various pathologies, including cancer. ('genetic', 'Var', (33, 40)) ('SDH', 'Gene', '6390', (14, 17)) ('contribute', 'Reg', (71, 81)) ('cancer', 'Disease', (116, 122)) ('cancer', 'Disease', 'MESH:D009369', (116, 122)) ('epigenetic alterations', 'Var', (44, 66)) ('SDH', 'Gene', (14, 17)) ('cancer', 'Phenotype', 'HP:0002664', (116, 122)) ('rat', 'Species', '10116', (59, 62)) 114897 30967136 Variants in SDHD occur in most carotid paragangliomas, whereas rarer SDHB variants result in aggressive disease and metastasis. ('carotid paragangliomas', 'Disease', 'MESH:D002345', (31, 53)) ('SDHB', 'Gene', (69, 73)) ('Variants', 'Var', (0, 8)) ('carotid paraganglioma', 'Phenotype', 'HP:0100635', (31, 52)) ('SDHD', 'Gene', (12, 16)) ('SDHD', 'Gene', '6392', (12, 16)) ('occur', 'Reg', (17, 22)) ('carotid paragangliomas', 'Phenotype', 'HP:0100635', (31, 53)) ('carotid paragangliomas', 'Disease', (31, 53)) ('aggressive disease', 'Disease', 'MESH:D001523', (93, 111)) ('SDHB', 'Gene', '6390', (69, 73)) ('paragangliomas', 'Phenotype', 'HP:0002668', (39, 53)) ('variants', 'Var', (74, 82)) ('result in', 'Reg', (83, 92)) ('aggressive disease', 'Disease', (93, 111)) ('glioma', 'Phenotype', 'HP:0009733', (46, 52)) ('paraganglioma', 'Phenotype', 'HP:0002668', (39, 52)) 114898 30967136 Variants in other known paraganglioma/pheochromocytoma-causative genes (e.g., RET, NF1, and IDH1) are less common in CPGLs and are primarily observed in sporadic ones. ('NF1', 'Gene', '4763', (83, 86)) ('Variants', 'Var', (0, 8)) ('common', 'Reg', (107, 113)) ('paraganglioma', 'Phenotype', 'HP:0002668', (24, 37)) ('RET', 'Gene', (78, 81)) ('RET', 'Gene', '5979', (78, 81)) ('IDH1', 'Gene', (92, 96)) ('CPGLs', 'Phenotype', 'HP:0100635', (117, 122)) ('glioma', 'Phenotype', 'HP:0009733', (31, 37)) ('paraganglioma', 'Disease', (24, 37)) ('paraganglioma', 'Disease', 'MESH:D010235', (24, 37)) ('pheochromocytoma', 'Disease', (38, 54)) ('IDH1', 'Gene', '3417', (92, 96)) ('CPGLs', 'Chemical', '-', (117, 122)) ('NF1', 'Gene', (83, 86)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (38, 54)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (38, 54)) 114900 30967136 Variants in RET and NF1 lead to deregulation of these pathways and are believed to be critical drivers of tumorigenesis. ('Variants', 'Var', (0, 8)) ('deregulation', 'MPA', (32, 44)) ('tumor', 'Disease', 'MESH:D009369', (106, 111)) ('RET', 'Gene', '5979', (12, 15)) ('RET', 'Gene', (12, 15)) ('NF1', 'Gene', (20, 23)) ('these pathways', 'Pathway', (48, 62)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('NF1', 'Gene', '4763', (20, 23)) ('tumor', 'Disease', (106, 111)) 114901 30967136 Several variants of IDH1 but not those of IDH2 were reported in CPGLs. ('IDH1', 'Gene', '3417', (20, 24)) ('CPGLs', 'Chemical', '-', (64, 69)) ('CPGLs', 'Phenotype', 'HP:0100635', (64, 69)) ('variants', 'Var', (8, 16)) ('IDH2', 'Gene', (42, 46)) ('IDH1', 'Gene', (20, 24)) ('IDH2', 'Gene', '3418', (42, 46)) 114902 30967136 Inactivation mutations in IDH1 are known to result in HIF accumulation and tumor development under pseudohypoxia conditions. ('pseudohypoxia conditions', 'Disease', 'MESH:D009135', (99, 123)) ('HIF accumulation', 'Disease', 'MESH:C579880', (54, 70)) ('Inactivation mutations', 'Var', (0, 22)) ('IDH1', 'Gene', (26, 30)) ('HIF accumulation', 'Disease', (54, 70)) ('tumor', 'Disease', 'MESH:D009369', (75, 80)) ('pseudohypoxia conditions', 'Disease', (99, 123)) ('result in', 'Reg', (44, 53)) ('tumor', 'Phenotype', 'HP:0002664', (75, 80)) ('IDH1', 'Gene', '3417', (26, 30)) ('tumor', 'Disease', (75, 80)) 114903 30967136 Two potential pathogenic variants in KIF1B were identified in CPGLs. ('pathogenic', 'Reg', (14, 24)) ('variants', 'Var', (25, 33)) ('CPGLs', 'Phenotype', 'HP:0100635', (62, 67)) ('CPGLs', 'Chemical', '-', (62, 67)) ('KIF1B', 'Gene', (37, 42)) 114906 30967136 Variants associated with CPGLs were detected in a group of TP53-related genes [TP53BP1, TP53BP2 (ASPP2), and TP53I13 (DSCP1)] that encode proteins involved in the regulation of cell proliferation, DNA damage response, and apoptosis. ('ASPP2', 'Gene', '7159', (97, 102)) ('Variants', 'Var', (0, 8)) ('TP53I13', 'Gene', (109, 116)) ('DSCP1', 'Gene', '90313', (118, 123)) ('rat', 'Species', '10116', (189, 192)) ('CPGLs', 'Phenotype', 'HP:0100635', (25, 30)) ('ASPP2', 'Gene', (97, 102)) ('associated', 'Reg', (9, 19)) ('CPGLs', 'Disease', (25, 30)) ('DSCP1', 'Gene', (118, 123)) ('TP53I13', 'Gene', '90313', (109, 116)) ('TP53-related genes', 'Gene', (59, 77)) ('CPGLs', 'Chemical', '-', (25, 30)) ('TP53BP2', 'Gene', '7159', (88, 95)) ('TP53BP1', 'Gene', '7158', (79, 86)) ('TP53BP1', 'Gene', (79, 86)) ('TP53BP2', 'Gene', (88, 95)) 114910 30967136 Aberrant ARNT expression can contribute to tumor growth via interactions with specific transcription factors that regulate the expression of multiple genes. ('contribute', 'Reg', (29, 39)) ('Aberrant', 'Var', (0, 8)) ('ARNT', 'Gene', '405', (9, 13)) ('tumor', 'Disease', 'MESH:D009369', (43, 48)) ('tumor', 'Phenotype', 'HP:0002664', (43, 48)) ('ARNT', 'Gene', (9, 13)) ('tumor', 'Disease', (43, 48)) ('interactions', 'Interaction', (60, 72)) 114911 30967136 In addition, likely pathogenic variants have been identified in MEN1, BAP1, BRAF, BRCA1, BRCA2, CDKN2A, CSDE1, and FGFR3 in individual CPGLs. ('pathogenic', 'Reg', (20, 30)) ('BRCA2', 'Gene', (89, 94)) ('BRCA1', 'Gene', '672', (82, 87)) ('MEN1', 'Gene', (64, 68)) ('BRCA1', 'Gene', (82, 87)) ('BAP1', 'Gene', '8314', (70, 74)) ('CSDE1', 'Gene', (104, 109)) ('FGFR3', 'Gene', (115, 120)) ('CDKN2A', 'Gene', (96, 102)) ('BRCA2', 'Gene', '675', (89, 94)) ('variants', 'Var', (31, 39)) ('CSDE1', 'Gene', '7812', (104, 109)) ('FGFR3', 'Gene', '2261', (115, 120)) ('BAP1', 'Gene', (70, 74)) ('BRAF', 'Gene', (76, 80)) ('CDKN2A', 'Gene', '1029', (96, 102)) ('BRAF', 'Gene', '673', (76, 80)) ('CPGLs', 'Phenotype', 'HP:0100635', (135, 140)) ('MEN1', 'Gene', '4221', (64, 68)) ('CPGLs', 'Chemical', '-', (135, 140)) 114918 30967136 This approach allowed the identification of novel candidate genes and likely pathogenic variants involved in the pathogenesis of CPGLs. ('variants', 'Var', (88, 96)) ('CPGLs', 'Phenotype', 'HP:0100635', (129, 134)) ('CPGLs', 'Disease', (129, 134)) ('CPGLs', 'Chemical', '-', (129, 134)) 114927 30967136 Pathogenicity of all variants was assessed in silico using the SIFT, PolyPhen2, MutationTaster, and LRT algorithms. ('SIFT', 'Disease', (63, 67)) ('variants', 'Var', (21, 29)) ('SIFT', 'Disease', 'None', (63, 67)) 114928 30967136 Using exome and transcriptome data from the same carotid paragangliomas (25 samples), we evaluated the impact of somatic loss-of-function variants on gene expression profiles using xseq. ('glioma', 'Phenotype', 'HP:0009733', (64, 70)) ('carotid paraganglioma', 'Phenotype', 'HP:0100635', (49, 70)) ('carotid paragangliomas', 'Disease', 'MESH:D002345', (49, 71)) ('variants', 'Var', (138, 146)) ('carotid paragangliomas', 'Phenotype', 'HP:0100635', (49, 71)) ('loss-of-function', 'NegReg', (121, 137)) ('carotid paragangliomas', 'Disease', (49, 71)) ('paraganglioma', 'Phenotype', 'HP:0002668', (57, 70)) ('paragangliomas', 'Phenotype', 'HP:0002668', (57, 71)) 114929 30967136 The output of xseq consists of P(Fg,m) and P(Dg) values, where P(Fg,m) is the probability that an individual mutation in gene g in an individual patient m influences expression within that patient, and P(Dg) is the probability that a recurrently mutated gene g influences gene expression across the population of patients. ('P(Dg', 'Gene', (43, 47)) ('P(Dg)', 'Gene', '26227', (202, 207)) ('P(Dg', 'Gene', (202, 206)) ('influences', 'Reg', (155, 165)) ('gene g', 'Gene', (121, 127)) ('influences', 'Reg', (261, 271)) ('gene expression', 'MPA', (272, 287)) ('patient', 'Species', '9606', (189, 196)) ('patient', 'Species', '9606', (313, 320)) ('patient', 'Species', '9606', (145, 152)) ('P(Dg)', 'Gene', '26227', (43, 48)) ('expression', 'MPA', (166, 176)) ('patients', 'Species', '9606', (313, 321)) ('mutation', 'Var', (109, 117)) 114930 30967136 Nested-PCR was performed to amplify the two variants (c.2706-7855G > A and c.2706-7798delA) in the CSP1 gene. ('c.2706-7855G > A', 'Mutation', 'c.2706_7855G>A', (54, 70)) ('CSP1', 'Gene', '1827', (99, 103)) ('c.2706-7798delA', 'Mutation', 'c.2706_7798delA', (75, 90)) ('CSP1', 'Gene', (99, 103)) ('c.2706-7855G > A', 'Var', (54, 70)) ('c.2706-7798delA', 'Var', (75, 90)) 114934 30967136 Using the xseq model, we estimated the probability that potential loss-of-function somatic variants (frameshift, nonsense, and splice-site variants) impact gene expression in individual patients [P(F) value] and across the population of patients [P(D) value]. ('nonsense', 'Var', (113, 121)) ('frameshift', 'Var', (101, 111)) ('loss-of-function', 'NegReg', (66, 82)) ('gene expression', 'MPA', (156, 171)) ('patients', 'Species', '9606', (237, 245)) ('impact', 'Reg', (149, 155)) ('patients', 'Species', '9606', (186, 194)) 114937 30967136 We identified 16 genes (MYH15, CSP1, MYH3, PTGES3L, CSGALNACT2, NMD3, IFI44, GMCL1, LSP1, PPFIBP2, RBL2, MAGED1, CNIH3, STRA6, SLC6A13, and ATM) whose somatic variants can influence their gene expression. ('CSGALNACT2', 'Gene', '55454', (52, 62)) ('STRA6', 'Gene', '64220', (120, 125)) ('LSP1', 'Gene', (84, 88)) ('GMCL1', 'Gene', (77, 82)) ('CSGALNACT2', 'Gene', (52, 62)) ('NMD3', 'Gene', '51068', (64, 68)) ('PPFIBP2', 'Gene', (90, 97)) ('MYH3', 'Gene', '4621', (37, 41)) ('LSP1', 'Gene', '4046', (84, 88)) ('SLC6A13', 'Gene', (127, 134)) ('variants', 'Var', (159, 167)) ('PPFIBP2', 'Gene', '8495', (90, 97)) ('gene expression', 'MPA', (188, 203)) ('MAGED1', 'Gene', '9500', (105, 111)) ('IFI44', 'Gene', (70, 75)) ('STRA6', 'Gene', (120, 125)) ('CNIH3', 'Gene', (113, 118)) ('ATM', 'Gene', '472', (140, 143)) ('CSP1', 'Gene', '1827', (31, 35)) ('SLC6A13', 'Gene', '6540', (127, 134)) ('GMCL1', 'Gene', '64395', (77, 82)) ('MYH15', 'Gene', (24, 29)) ('PTGES3L', 'Gene', '100885848', (43, 50)) ('influence', 'Reg', (172, 181)) ('MYH15', 'Gene', '22989', (24, 29)) ('RBL2', 'Gene', (99, 103)) ('RBL2', 'Gene', '5934', (99, 103)) ('MAGED1', 'Gene', (105, 111)) ('CSP1', 'Gene', (31, 35)) ('IFI44', 'Gene', '10561', (70, 75)) ('ATM', 'Gene', (140, 143)) ('CNIH3', 'Gene', '149111', (113, 118)) ('PTGES3L', 'Gene', (43, 50)) ('NMD3', 'Gene', (64, 68)) ('MYH3', 'Gene', (37, 41)) 114939 30967136 To analyze all potential somatic loss-of-function variants in MYH15, CSP1, and MYH3, novel filter conditions were set for variants derived from the 1000 Genomes Project and ExAC; in particular, variants with frequencies of 2% or less were used in the analysis. ('CSP1', 'Gene', '1827', (69, 73)) ('MYH3', 'Gene', (79, 83)) ('MYH3', 'Gene', '4621', (79, 83)) ('variants', 'Var', (50, 58)) ('MYH15', 'Gene', '22989', (62, 67)) ('MYH15', 'Gene', (62, 67)) ('loss-of-function', 'NegReg', (33, 49)) ('CSP1', 'Gene', (69, 73)) 114940 30967136 Predictions using the SIFT, PolyPhen2, MutationTaster, or LRT algorithms indicated that the MYH3 gene was predominantly enriched in likely pathogenic variants (Table 3). ('variants', 'Var', (150, 158)) ('SIFT', 'Disease', 'None', (22, 26)) ('MYH3', 'Gene', '4621', (92, 96)) ('pathogenic', 'Reg', (139, 149)) ('SIFT', 'Disease', (22, 26)) ('MYH3', 'Gene', (92, 96)) 114941 30967136 However, several variants were frequently identified in the carotid paraganglioma samples and appear to be germline ones. ('identified', 'Reg', (42, 52)) ('glioma', 'Phenotype', 'HP:0009733', (75, 81)) ('variants', 'Var', (17, 25)) ('carotid paraganglioma', 'Disease', (60, 81)) ('paraganglioma', 'Phenotype', 'HP:0002668', (68, 81)) ('carotid paraganglioma', 'Disease', 'MESH:D002345', (60, 81)) ('carotid paraganglioma', 'Phenotype', 'HP:0100635', (60, 81)) 114942 30967136 In this case, only MYH15 was characterized by variants that can result in gene expression alterations [average P(F) value - 0.66; and P(D) value - 0.68]. ('rat', 'Species', '10116', (94, 97)) ('alterations', 'Reg', (90, 101)) ('MYH15', 'Gene', '22989', (19, 24)) ('MYH15', 'Gene', (19, 24)) ('gene expression', 'MPA', (74, 89)) ('variants', 'Var', (46, 54)) 114944 30967136 From the set of 16 candidate genes, somatic loss-of-function variants in three genes, namely CPS1, MYH15, and MYH3, were found to significantly alter their gene expression levels. ('gene expression levels', 'MPA', (156, 178)) ('MYH3', 'Gene', (110, 114)) ('MYH15', 'Gene', '22989', (99, 104)) ('MYH15', 'Gene', (99, 104)) ('CPS1', 'Gene', (93, 97)) ('MYH3', 'Gene', '4621', (110, 114)) ('variants', 'Var', (61, 69)) ('CPS1', 'Gene', '1373', (93, 97)) ('loss-of-function', 'NegReg', (44, 60)) 114946 30967136 Germline variants in CPS1 cause rare autosomal recessive disorders called carbamoyl-phosphate synthetase I deficiency (CPSID). ('autosomal recessive disorders', 'Disease', 'MESH:D030342', (37, 66)) ('cause', 'Reg', (26, 31)) ('synthetase I deficiency', 'Disease', (94, 117)) ('CPS1', 'Gene', (21, 25)) ('CPS1', 'Gene', '1373', (21, 25)) ('CPSID', 'Disease', 'None', (119, 124)) ('autosomal recessive disorders', 'Disease', (37, 66)) ('synthetase I deficiency', 'Disease', 'MESH:D020165', (94, 117)) ('Germline variants', 'Var', (0, 17)) ('CPSID', 'Disease', (119, 124)) 114949 30967136 Alterations in CPS1 were identified in malignant glioma. ('CPS1', 'Gene', (15, 19)) ('CPS1', 'Gene', '1373', (15, 19)) ('identified', 'Reg', (25, 35)) ('Alterations', 'Var', (0, 11)) ('malignant glioma', 'Disease', (39, 55)) ('malignant glioma', 'Disease', 'MESH:D005910', (39, 55)) ('glioma', 'Phenotype', 'HP:0009733', (49, 55)) ('rat', 'Species', '10116', (4, 7)) 114951 30967136 Hypermethylation of CPS1 accompanied by its downregulated expression was detected in hepatocellular carcinoma. ('carcinoma', 'Phenotype', 'HP:0030731', (100, 109)) ('downregulated', 'NegReg', (44, 57)) ('detected', 'Reg', (73, 81)) ('expression', 'MPA', (58, 68)) ('Hypermethylation', 'Var', (0, 16)) ('CPS1', 'Gene', (20, 24)) ('CPS1', 'Gene', '1373', (20, 24)) ('hepatocellular carcinoma', 'Phenotype', 'HP:0001402', (85, 109)) ('hepatocellular carcinoma', 'Disease', (85, 109)) ('hepatocellular carcinoma', 'Disease', 'MESH:D006528', (85, 109)) 114953 30967136 In lung adenocarcinoma cells, inhibition of CPS1 expression was found to reduce tumor growth. ('tumor', 'Disease', 'MESH:D009369', (80, 85)) ('lung adenocarcinoma', 'Disease', 'MESH:D000077192', (3, 22)) ('CPS1', 'Gene', (44, 48)) ('inhibition', 'Var', (30, 40)) ('CPS1', 'Gene', '1373', (44, 48)) ('carcinoma', 'Phenotype', 'HP:0030731', (13, 22)) ('tumor', 'Phenotype', 'HP:0002664', (80, 85)) ('expression', 'MPA', (49, 59)) ('tumor', 'Disease', (80, 85)) ('lung adenocarcinoma', 'Phenotype', 'HP:0030078', (3, 22)) ('reduce', 'NegReg', (73, 79)) ('lung adenocarcinoma', 'Disease', (3, 22)) 114955 30967136 The variants in CPS1 can influence its expression level. ('CPS1', 'Gene', (16, 20)) ('variants', 'Var', (4, 12)) ('CPS1', 'Gene', '1373', (16, 20)) ('influence', 'Reg', (25, 34)) ('expression level', 'MPA', (39, 55)) 114957 30967136 Similar to the development of inherited CPSID, variants identified in CPS1 can be assumed to cause CPS1 inactivation, thereby leading to CPGLs. ('CPS1', 'Gene', '1373', (70, 74)) ('variants', 'Var', (47, 55)) ('inactivation', 'NegReg', (104, 116)) ('CPGLs', 'Phenotype', 'HP:0100635', (137, 142)) ('CPS1', 'Gene', (99, 103)) ('leading to', 'Reg', (126, 136)) ('CPS1', 'Gene', '1373', (99, 103)) ('CPGLs', 'Chemical', '-', (137, 142)) ('CPSID', 'Disease', (40, 45)) ('CPSID', 'Disease', 'None', (40, 45)) ('CPGLs', 'Disease', (137, 142)) ('CPS1', 'Gene', (70, 74)) 114958 30967136 In turn, CPS1 variants could lead to alterations in the urea cycle and accumulation of toxic ammonia, which is normally converted to urea. ('CPS1', 'Gene', (9, 13)) ('urea', 'Chemical', 'MESH:D014508', (56, 60)) ('CPS1', 'Gene', '1373', (9, 13)) ('accumulation of toxic ammonia', 'MPA', (71, 100)) ('variants', 'Var', (14, 22)) ('urea', 'Chemical', 'MESH:D014508', (133, 137)) ('ammonia', 'Chemical', 'MESH:D000641', (93, 100)) ('rat', 'Species', '10116', (41, 44)) ('lead to alterations', 'Reg', (29, 48)) ('urea cycle', 'MPA', (56, 66)) 114964 30967136 Variants in MYH3 and MYH15 were additionally demonstrated to exert cis-effects on gene expression in carotid paragangliomas. ('paraganglioma', 'Phenotype', 'HP:0002668', (109, 122)) ('rat', 'Species', '10116', (52, 55)) ('carotid paragangliomas', 'Disease', 'MESH:D002345', (101, 123)) ('Variants', 'Var', (0, 8)) ('gene expression', 'MPA', (82, 97)) ('paragangliomas', 'Phenotype', 'HP:0002668', (109, 123)) ('carotid paraganglioma', 'Phenotype', 'HP:0100635', (101, 122)) ('cis-effects', 'MPA', (67, 78)) ('carotid paragangliomas', 'Disease', (101, 123)) ('carotid paragangliomas', 'Phenotype', 'HP:0100635', (101, 123)) ('MYH15', 'Gene', '22989', (21, 26)) ('MYH15', 'Gene', (21, 26)) ('MYH3', 'Gene', (12, 16)) ('glioma', 'Phenotype', 'HP:0009733', (116, 122)) ('MYH3', 'Gene', '4621', (12, 16)) 114975 30967136 In addition, proteome studies revealed deferential expression of MYH15 in early onset dementia, an atypical frontotemporal lobar degeneration (aFTLD). ('frontotemporal lobar degeneration', 'Phenotype', 'HP:0006892', (108, 141)) ('rat', 'Species', '10116', (135, 138)) ('MYH15', 'Gene', '22989', (65, 70)) ('MYH15', 'Gene', (65, 70)) ('frontotemporal lobar degeneration', 'Disease', (108, 141)) ('dementia', 'Phenotype', 'HP:0000726', (86, 94)) ('dementia', 'Disease', (86, 94)) ('deferential', 'Var', (39, 50)) ('dementia', 'Disease', 'MESH:D003704', (86, 94)) 114976 30967136 Variants in MYH3 were detected as benzo(a)pyrene exposure-genomic alterations in lung cancer patients. ('lung cancer', 'Disease', (81, 92)) ('detected', 'Reg', (22, 30)) ('Variants', 'Var', (0, 8)) ('rat', 'Species', '10116', (70, 73)) ('lung cancer', 'Phenotype', 'HP:0100526', (81, 92)) ('cancer', 'Phenotype', 'HP:0002664', (86, 92)) ('lung cancer', 'Disease', 'MESH:D008175', (81, 92)) ('MYH3', 'Gene', (12, 16)) ('patients', 'Species', '9606', (93, 101)) ('pyrene', 'Chemical', 'MESH:C030984', (42, 48)) ('MYH3', 'Gene', '4621', (12, 16)) 114977 30967136 Germline variants in MYH3 are associated with distal arthrogryposis syndromes [distal arthrogryposis type 1, Freeman-Sheldon syndrome (DA2A), and Sheldon-Hall syndrome (DA2B)], multiple pterygium syndrome (MPS), and spondylocarpotarsal synostosis syndrome (SCT). ('arthrogryposis syndromes', 'Disease', (53, 77)) ('spondylocarpotarsal synostosis syndrome', 'Disease', (216, 255)) ('MYH3', 'Gene', '4621', (21, 25)) ('arthrogryposis syndromes', 'Disease', 'MESH:D001176', (53, 77)) ('MPS', 'Disease', (206, 209)) ('Sheldon-Hall syndrome', 'Disease', (146, 167)) ('arthrogryposis', 'Disease', 'MESH:D001176', (86, 100)) ('multiple pterygium syndrome', 'Disease', (177, 204)) ('Freeman-Sheldon syndrome', 'Disease', (109, 133)) ('variants', 'Var', (9, 17)) ('Sheldon-Hall syndrome', 'Disease', 'MESH:C538400', (146, 167)) ('arthrogryposis', 'Disease', 'MESH:D001176', (53, 67)) ('pterygium', 'Phenotype', 'HP:0001059', (186, 195)) ('associated', 'Reg', (30, 40)) ('arthrogryposis', 'Phenotype', 'HP:0002804', (86, 100)) ('arthrogryposis', 'Disease', (86, 100)) ('arthrogryposis', 'Disease', (53, 67)) ('DA2B', 'Gene', '7136', (169, 173)) ('MPS', 'Disease', 'MESH:D009084', (206, 209)) ('multiple pterygium', 'Phenotype', 'HP:0001040', (177, 195)) ('arthrogryposis', 'Phenotype', 'HP:0002804', (53, 67)) ('distal arthrogryposis', 'Phenotype', 'HP:0005684', (79, 100)) ('MYH3', 'Gene', (21, 25)) ('Freeman-Sheldon syndrome', 'Disease', 'MESH:C535483', (109, 133)) ('distal arthrogryposis', 'Phenotype', 'HP:0005684', (46, 67)) ('DA2B', 'Gene', (169, 173)) ('spondylocarpotarsal synostosis syndrome', 'Disease', 'MESH:C535780', (216, 255)) 114979 30967136 Variants in MYH15 were reported to be associated with higher risk for non-cardioembolic stroke and ischemic stroke. ('ischemic stroke', 'Disease', 'MESH:D002544', (99, 114)) ('Variants', 'Var', (0, 8)) ('associated', 'Reg', (38, 48)) ('MYH15', 'Gene', '22989', (12, 17)) ('MYH15', 'Gene', (12, 17)) ('ischemic stroke', 'Disease', (99, 114)) ('ischemic stroke', 'Phenotype', 'HP:0002140', (99, 114)) ('non-cardioembolic stroke', 'Disease', 'MESH:D020521', (70, 94)) ('non-cardioembolic stroke', 'Disease', (70, 94)) ('stroke', 'Phenotype', 'HP:0001297', (108, 114)) ('stroke', 'Phenotype', 'HP:0001297', (88, 94)) 114980 30967136 In the present study, we identified several likely pathogenic variants in MYH3 and MYH15 in carotid paragangliomas, and most of these variants were found to be located in MYH3. ('MYH3', 'Gene', '4621', (74, 78)) ('pathogenic', 'Reg', (51, 61)) ('carotid paragangliomas', 'Phenotype', 'HP:0100635', (92, 114)) ('MYH3', 'Gene', (171, 175)) ('MYH3', 'Gene', '4621', (171, 175)) ('variants', 'Var', (62, 70)) ('carotid paragangliomas', 'Disease', 'MESH:D002345', (92, 114)) ('glioma', 'Phenotype', 'HP:0009733', (107, 113)) ('paragangliomas', 'Phenotype', 'HP:0002668', (100, 114)) ('paraganglioma', 'Phenotype', 'HP:0002668', (100, 113)) ('carotid paraganglioma', 'Phenotype', 'HP:0100635', (92, 113)) ('MYH15', 'Gene', '22989', (83, 88)) ('MYH15', 'Gene', (83, 88)) ('MYH3', 'Gene', (74, 78)) ('carotid paragangliomas', 'Disease', (92, 114)) 114983 30967136 Therefore, variants identified in MYH3 and MYH15 are likely to affect the function of MYH proteins and are potentially associated with carotid paragangliomas. ('carotid paragangliomas', 'Disease', 'MESH:D002345', (135, 157)) ('affect', 'Reg', (63, 69)) ('MYH proteins', 'Protein', (86, 98)) ('paragangliomas', 'Phenotype', 'HP:0002668', (143, 157)) ('MYH15', 'Gene', '22989', (43, 48)) ('MYH15', 'Gene', (43, 48)) ('variants', 'Var', (11, 19)) ('MYH3', 'Gene', (34, 38)) ('MYH3', 'Gene', '4621', (34, 38)) ('paraganglioma', 'Phenotype', 'HP:0002668', (143, 156)) ('carotid paraganglioma', 'Phenotype', 'HP:0100635', (135, 156)) ('carotid paragangliomas', 'Disease', (135, 157)) ('carotid paragangliomas', 'Phenotype', 'HP:0100635', (135, 157)) ('glioma', 'Phenotype', 'HP:0009733', (150, 156)) ('function', 'MPA', (74, 82)) ('associated', 'Reg', (119, 129)) 115021 30401717 We examined the following external gene expression profiling datasets of metastasis versus primary samples (listed by Gene Expression Omnibus or ArrayExpress accession number): BRCA studies E-MTAB-4003, GSE100534, and GSE110590; CRC studies GSE50760, GSE22834, and GSE41258; PAAD studies GSE42952 and GSE19281; PRAD studies GSE21034, GSE3933, and GSE6099; SKCM studies GSE65904, GSE17275, and GSE46517; and THCA study GSE60542. ('GSE17275', 'Var', (379, 387)) ('GSE42952', 'Var', (288, 296)) ('E-MTAB-4003', 'Chemical', 'MESH:C105917', (190, 201)) ('GSE3933', 'Var', (334, 341)) ('GSE50760', 'Var', (241, 249)) ('THCA', 'Chemical', 'MESH:C003681', (407, 411)) ('CRC', 'Disease', (229, 232)) ('GSE65904', 'Var', (369, 377)) ('GSE100534', 'Var', (203, 212)) ('GSE21034', 'Var', (324, 332)) ('BRCA', 'Gene', '672', (177, 181)) ('CRC', 'Disease', 'MESH:D015179', (229, 232)) ('GSE6099', 'Var', (347, 354)) ('BRCA', 'Gene', (177, 181)) ('GSE46517', 'Var', (393, 401)) 115119 30400849 Before the routine clinical introduction of preprocedural adrenergic blockade, resection of PPGL was associated with high morbidity and mortality. ('resection', 'Var', (79, 88)) ('PPGL', 'Chemical', '-', (92, 96)) ('PPGL', 'Gene', (92, 96)) 115123 30400849 In this study, we aim to describe intraprocedural hemodynamics for patients with nonfunctional and functional metastatic PPGL lesions, and their periprocedural outcomes. ('metastatic', 'Disease', (110, 120)) ('lesions', 'Var', (126, 133)) ('patients', 'Species', '9606', (67, 75)) ('PPGL', 'Chemical', '-', (121, 125)) 115133 30400849 For patients with inadequate response to therapy (with low-normal blood pressures), or if a large release of catecholamines is anticipated, metyrosine is added to block the rate-limiting step of catecholamine synthesis. ('metyrosine', 'Chemical', 'MESH:D019805', (140, 150)) ('catecholamine', 'Chemical', 'MESH:D002395', (195, 208)) ('release of catecholamines', 'MPA', (98, 123)) ('catecholamines', 'Chemical', 'MESH:D002395', (109, 123)) ('metyrosine', 'Var', (140, 150)) ('low-normal blood pressures', 'Phenotype', 'HP:0002632', (55, 81)) ('patients', 'Species', '9606', (4, 12)) ('catecholamine', 'Chemical', 'MESH:D002395', (109, 122)) 115136 30400849 Tumor status was designated as functional, from preprocedural plasma and 24-hour urine fractionated metanephrine levels, if the concentration of at least 1 of the following was higher than the reference range: urine total metanephrines (>=1300 mcg/24 h), urine metanephrine (>=400 mcg/24 h), urine normetanephrine (>=900 mcg/24 h), plasma-free metanephrine (>=0.5 nmol/L), or plasma normetanephrine (>=0.9 nmol/L). ('>=400', 'Var', (275, 280)) ('higher', 'PosReg', (177, 183)) ('Tumor', 'Phenotype', 'HP:0002664', (0, 5)) ('plasma normetanephrine', 'MPA', (376, 398)) ('metanephrine', 'Chemical', 'MESH:D008676', (261, 273)) ('metanephrine', 'Chemical', 'MESH:D008676', (100, 112)) ('metanephrine', 'Chemical', 'MESH:D008676', (344, 356)) ('plasma-free metanephrine', 'MPA', (332, 356)) ('urine normetanephrine', 'MPA', (292, 313)) ('metanephrine', 'Chemical', 'MESH:D008676', (386, 398)) ('>=1300', 'Var', (237, 243)) ('metanephrine', 'Chemical', 'MESH:D008676', (222, 234)) ('urine metanephrine', 'MPA', (255, 273)) ('metanephrine', 'Chemical', 'MESH:D008676', (301, 313)) 115167 30400849 Our main finding is that patients with metastatic PPGLs, even when pretreated with adrenergic blocking agents, may experience substantial intraprocedural hemodynamic instability. ('metastatic', 'Var', (39, 49)) ('PPGLs', 'Disease', (50, 55)) ('patients', 'Species', '9606', (25, 33)) ('PPGLs', 'Chemical', '-', (50, 55)) 115174 30400849 Espinosa De Ycaza et al.4 reviewed hemodynamics during thermal ablation of metastases from renal or lung tumors to adrenal gland, and found that ablation of lesions in adrenal glands may also be associated with hypertensive urgencies. ('associated', 'Reg', (195, 205)) ('hypertensive urgencies', 'Phenotype', 'HP:0100735', (211, 233)) ('ablation', 'Var', (145, 153)) ('lesions', 'Var', (157, 164)) ('metastases', 'Disease', (75, 85)) ('hypertensive', 'Disease', 'MESH:D006973', (211, 223)) ('tumor', 'Phenotype', 'HP:0002664', (105, 110)) ('renal or lung tumors', 'Disease', (91, 111)) ('hypertensive', 'Disease', (211, 223)) ('lung tumors', 'Phenotype', 'HP:0100526', (100, 111)) ('tumors', 'Phenotype', 'HP:0002664', (105, 111)) ('renal or lung tumors', 'Disease', 'MESH:D007674', (91, 111)) ('metastases', 'Disease', 'MESH:D009362', (75, 85)) 115177 30400849 Although plasma catecholamine concentrations during ablation were not measured in our patients, the pattern of intraprocedural hemodynamics was consistent with catecholamine release from PPGL. ('PPGL', 'Var', (187, 191)) ('PPGL', 'Chemical', '-', (187, 191)) ('catecholamine', 'Chemical', 'MESH:D002395', (160, 173)) ('catecholamine', 'Chemical', 'MESH:D002395', (16, 29)) ('catecholamine release', 'MPA', (160, 181)) ('patients', 'Species', '9606', (86, 94)) 115284 29413423 These mutations are divided into three main clusters based on the activation of a particular signaling pathway (Figure 1) and each cluster is associated with unique clinical characteristics of patients with these tumors. ('patients', 'Species', '9606', (193, 201)) ('tumors', 'Disease', (213, 219)) ('tumors', 'Disease', 'MESH:D009369', (213, 219)) ('signaling pathway', 'Pathway', (93, 110)) ('tumors', 'Phenotype', 'HP:0002664', (213, 219)) ('tumor', 'Phenotype', 'HP:0002664', (213, 218)) ('mutations', 'Var', (6, 15)) ('activation', 'PosReg', (66, 76)) 115285 29413423 The hypoxia-inducible factor (HIF) signaling pathway is affected by mutations in genes encoding the hypoxia-inducible factor 2 alpha (HIF2A), succinate dehydrogenase subunits (SDHx [SDHA, SDHB, SDHC, SDHD]), succinate dehydrogenase complex assembly factor 2 (SDHAF2), von Hippel-Lindau tumor suppresor (VHL), egl-9 prolyl hydroxylase 1 and 2 (EGLN1/2), fumarate hydratase (FH), malate dehydrogenase 2 (MDH2), and isocitrate dehydrogenase (IDH). ('FH', 'Gene', '2271', (373, 375)) ('IDH', 'Gene', '3417', (439, 442)) ('SDHC', 'Gene', '6391', (194, 198)) ('SDHD', 'Gene', '6392', (200, 204)) ('VHL', 'Gene', '7428', (303, 306)) ('tumor', 'Phenotype', 'HP:0002664', (286, 291)) ('SDHB', 'Gene', '6390', (188, 192)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', '54949', (208, 257)) ('succinate', 'Chemical', 'MESH:D019802', (208, 217)) ('hypoxia', 'Disease', 'MESH:D000860', (4, 11)) ('affected', 'Reg', (56, 64)) ('malate dehydrogenase 2', 'Gene', (378, 400)) ('succinate', 'Chemical', 'MESH:D019802', (142, 151)) ('SDHD', 'Gene', (200, 204)) ('von Hippel-Lindau tumor', 'Disease', (268, 291)) ('hypoxia-inducible factor 2 alpha', 'Gene', '2034', (100, 132)) ('MDH2', 'Gene', (402, 406)) ('fumarate hydratase', 'Gene', (353, 371)) ('EGLN1/2', 'Gene', (343, 350)) ('SDHB', 'Gene', (188, 192)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', (208, 257)) ('SDHC', 'Gene', (194, 198)) ('isocitrate dehydrogenase', 'Gene', '3417', (413, 437)) ('SDHA', 'Gene', (182, 186)) ('malate dehydrogenase 2', 'Gene', '4191', (378, 400)) ('SDHAF2', 'Gene', (259, 265)) ('SDHAF2', 'Gene', '54949', (259, 265)) ('SDHA', 'Gene', (259, 263)) ('hypoxia-inducible factor 2 alpha', 'Gene', (100, 132)) ('hypoxia', 'Disease', (100, 107)) ('IDH', 'Gene', (439, 442)) ('SDHA', 'Gene', '6389', (182, 186)) ('VHL', 'Gene', (303, 306)) ('SDHx', 'Chemical', '-', (176, 180)) ('HIF2A', 'Gene', '2034', (134, 139)) ('EGLN1/2', 'Gene', '54583;112398', (343, 350)) ('fumarate hydratase', 'Gene', '2271', (353, 371)) ('von Hippel-Lindau tumor', 'Disease', 'MESH:D006623', (268, 291)) ('SDHA', 'Gene', '6389', (259, 263)) ('MDH2', 'Gene', '4191', (402, 406)) ('HIF2A', 'Gene', (134, 139)) ('hypoxia', 'Disease', 'MESH:D000860', (100, 107)) ('hypoxia', 'Disease', (4, 11)) ('mutations', 'Var', (68, 77)) ('isocitrate dehydrogenase', 'Gene', (413, 437)) 115286 29413423 PHEOs and PGLs associated with mutations are pseudohypoxic, since the upregulation of HIF-alpha is not caused by hypoxia (i. e. insufficient oxygen levels) but by various other mechanisms (Figure 1). ('PHEO', 'Phenotype', 'HP:0002666', (0, 4)) ('mutations', 'Var', (31, 40)) ('hypoxia', 'Disease', 'MESH:D000860', (113, 120)) ('upregulation', 'PosReg', (70, 82)) ('insufficient oxygen levels', 'Phenotype', 'HP:0012418', (128, 154)) ('PHEOs', 'Chemical', '-', (0, 5)) ('hypoxia', 'Disease', (113, 120)) ('PGL', 'Phenotype', 'HP:0002668', (10, 13)) ('oxygen', 'Chemical', 'MESH:D010100', (141, 147)) ('HIF-alpha', 'Protein', (86, 95)) 115287 29413423 Gain-of-function mutations in HIF2A result in direct activation of HIF signaling and upregulation of HIF-alpha target genes. ('HIF signaling', 'MPA', (67, 80)) ('activation', 'PosReg', (53, 63)) ('HIF2A', 'Gene', (30, 35)) ('Gain-of-function', 'PosReg', (0, 16)) ('upregulation', 'PosReg', (85, 97)) ('mutations', 'Var', (17, 26)) ('HIF2A', 'Gene', '2034', (30, 35)) 115288 29413423 Mutations in genes encoding Krebs cycle enzymes lead to deregulation of cellular energy, chromatin remodeling, changes in DNA methylation, and ROS production. ('ROS', 'Chemical', '-', (143, 146)) ('deregulation', 'MPA', (56, 68)) ('chromatin', 'MPA', (89, 98)) ('cellular energy', 'MPA', (72, 87)) ('ROS production', 'MPA', (143, 157)) ('Krebs', 'Chemical', '-', (28, 33)) ('DNA methylation', 'MPA', (122, 137)) ('Mutations', 'Var', (0, 9)) ('changes', 'Reg', (111, 118)) 115289 29413423 These mutations lead to a metabolic shift that result in increased dependence on glycolysis, more or less impaired oxidative phosphorylation, and a substantial increase in some Krebs cycle oncometabolites, such as succinate, fumarate, or 2-hydroxyglutarate. ('fumarate', 'MPA', (225, 233)) ('dependence', 'MPA', (67, 77)) ('succinate', 'MPA', (214, 223)) ('oxidative phosphorylation', 'MPA', (115, 140)) ('succinate', 'Chemical', 'MESH:D019802', (214, 223)) ('increase', 'PosReg', (160, 168)) ('glycolysis', 'MPA', (81, 91)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (238, 256)) ('metabolic shift', 'MPA', (26, 41)) ('increased', 'PosReg', (57, 66)) ('Krebs', 'Chemical', '-', (177, 182)) ('fumarate', 'Chemical', 'MESH:D005650', (225, 233)) ('2-hydroxyglutarate', 'MPA', (238, 256)) ('mutations', 'Var', (6, 15)) ('Krebs cycle', 'Enzyme', (177, 188)) 115292 29413423 Dysregulation of the PI3K/mTOR pathway/receptor kinase signaling results from mutations in the RET proto-oncogene, neurofibromin 1 (NF1) tumor suppressor, H-RAS and K-RAS proto-oncogenes, transmembrane protein 127 (TMEM127), Myc-associated factor X (MAX), chromatin remodeler ATRX, and cold shock domain containing E1 (CSDE1). ('ATRX', 'Gene', '546', (276, 280)) ('results from', 'Reg', (65, 77)) ('TMEM127', 'Gene', (215, 222)) ('RET', 'Gene', '5979', (95, 98)) ('CSDE1', 'Gene', (319, 324)) ('NF1', 'Gene', '4763', (132, 135)) ('H-RAS', 'Gene', (155, 160)) ('mutations', 'Var', (78, 87)) ('TMEM127', 'Gene', '55654', (215, 222)) ('mTOR', 'Gene', (26, 30)) ('H-RAS', 'Gene', '3265', (155, 160)) ('MAX', 'Gene', '4149', (250, 253)) ('CSDE1', 'Gene', '7812', (319, 324)) ('Myc-associated factor X', 'Gene', '4149', (225, 248)) ('NF1', 'Gene', (132, 135)) ('RET', 'Gene', (95, 98)) ('neurofibromin 1', 'Gene', '4763', (115, 130)) ('tumor', 'Disease', (137, 142)) ('K-RAS', 'Gene', (165, 170)) ('shock', 'Phenotype', 'HP:0031273', (291, 296)) ('mTOR', 'Gene', '2475', (26, 30)) ('tumor', 'Disease', 'MESH:D009369', (137, 142)) ('neurofibromin 1', 'Gene', (115, 130)) ('cold shock domain containing E1', 'Gene', '7812', (286, 317)) ('K-RAS', 'Gene', '3845', (165, 170)) ('Myc-associated factor X', 'Gene', (225, 248)) ('cold shock domain containing E1', 'Gene', (286, 317)) ('MAX', 'Gene', (250, 253)) ('ATRX', 'Gene', (276, 280)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) 115293 29413423 The majority of PHEOs and PGLs in this cluster have overall good clinical outcome, except for those with ATRX mutations, where recurrence and metastases are more common. ('PHEOs', 'Chemical', '-', (16, 21)) ('PGL', 'Phenotype', 'HP:0002668', (26, 29)) ('mutations', 'Var', (110, 119)) ('ATRX', 'Gene', '546', (105, 109)) ('metastases', 'Disease', (142, 152)) ('metastases', 'Disease', 'MESH:D009362', (142, 152)) ('PHEO', 'Phenotype', 'HP:0002666', (16, 20)) ('ATRX', 'Gene', (105, 109)) 115294 29413423 PI3K/AKT and RAS/mitogen-activated protein kinases (MAPK) signaling pathways can also be altered by fusion genes involving NF1, B-Raf proto-oncogene (BRAF), and nerve growth factor receptor (NGFR), although these are very rare. ('NGFR', 'Gene', '4804', (191, 195)) ('fusion genes', 'Var', (100, 112)) ('MAPK', 'Gene', '5594', (52, 56)) ('nerve growth factor receptor', 'Gene', (161, 189)) ('MAPK', 'Gene', (52, 56)) ('AKT', 'Gene', '207', (5, 8)) ('NF1', 'Gene', '4763', (123, 126)) ('BRAF', 'Gene', (150, 154)) ('NF1', 'Gene', (123, 126)) ('BRAF', 'Gene', '673', (150, 154)) ('nerve growth factor receptor', 'Gene', '4804', (161, 189)) ('B-Raf proto-oncogene', 'Gene', '673', (128, 148)) ('NGFR', 'Gene', (191, 195)) ('AKT', 'Gene', (5, 8)) ('altered', 'Reg', (89, 96)) ('B-Raf proto-oncogene', 'Gene', (128, 148)) 115298 29413423 These tumors are PHEOs and are related to somatic mutations in CSDE1 and the mastermind like transcriptional coactivator 3 (MAML3) fusion genes (upstream binding transcription factor, RNA polymerase I (UBTF)-MAML3 and transcription factor 4 (TCF4)-MAML3). ('UBTF', 'Gene', '7343', (202, 206)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('CSDE1', 'Gene', (63, 68)) ('UBTF', 'Gene', (202, 206)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('mastermind like transcriptional coactivator 3', 'Gene', '55534', (77, 122)) ('MAML3', 'Gene', (124, 129)) ('PHEO', 'Phenotype', 'HP:0002666', (17, 21)) ('CSDE1', 'Gene', '7812', (63, 68)) ('tumors', 'Disease', (6, 12)) ('MAML3', 'Gene', '55534', (124, 129)) ('MAML3', 'Gene', (248, 253)) ('TCF4', 'Gene', '6925', (242, 246)) ('MAML3', 'Gene', (208, 213)) ('mutations', 'Var', (50, 59)) ('MAML3', 'Gene', '55534', (248, 253)) ('PHEOs', 'Chemical', '-', (17, 22)) ('transcription factor 4', 'Gene', '6925', (218, 240)) ('tumors', 'Disease', 'MESH:D009369', (6, 12)) ('transcription factor 4', 'Gene', (218, 240)) ('TCF4', 'Gene', (242, 246)) ('mastermind like transcriptional coactivator 3', 'Gene', (77, 122)) ('MAML3', 'Gene', '55534', (208, 213)) 115302 29413423 Alterations in these three aforementioned major signaling pathways lead to the dysregulation of many other cellular processes, including numerous metabolic (e. g. activation of MAPK signaling or switch to aerobic glycolysis) and epigenetic changes (such as modifications in DNA methylation, histones, chromatin remodeling, or nucleosome positioning). ('MAPK', 'Gene', (177, 181)) ('modifications', 'Reg', (257, 270)) ('lead to', 'Reg', (67, 74)) ('epigenetic', 'MPA', (229, 239)) ('DNA methylation', 'MPA', (274, 289)) ('metabolic', 'MPA', (146, 155)) ('activation', 'PosReg', (163, 173)) ('chromatin remodeling', 'CPA', (301, 321)) ('Alterations', 'Var', (0, 11)) ('histones', 'Protein', (291, 299)) ('MAPK', 'Gene', '5594', (177, 181)) ('dysregulation', 'MPA', (79, 92)) 115303 29413423 For instance, in SDHx- or FH-mutated tumors the accumulation of succinate or fumarate occurs, respectively, and mutated IDH1 demonstrates neomorphic activity leading to conversion of alpha-ketoglutarate to oncometabolite D-2-hydroxyglutarate (D2HG). ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (183, 202)) ('tumors', 'Phenotype', 'HP:0002664', (37, 43)) ('accumulation of succinate', 'MPA', (48, 73)) ('fumarate', 'Chemical', 'MESH:D005650', (77, 85)) ('conversion', 'MPA', (169, 179)) ('SDHx', 'Chemical', '-', (17, 21)) ('neomorphic activity', 'CPA', (138, 157)) ('D2HG', 'Chemical', 'MESH:C019417', (243, 247)) ('fumarate', 'MPA', (77, 85)) ('D-2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (221, 241)) ('IDH1', 'Gene', (120, 124)) ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('FH', 'Gene', '2271', (26, 28)) ('tumors', 'Disease', (37, 43)) ('mutated', 'Var', (112, 119)) ('IDH1', 'Gene', '3417', (120, 124)) ('succinate', 'Chemical', 'MESH:D019802', (64, 73)) ('tumors', 'Disease', 'MESH:D009369', (37, 43)) 115304 29413423 Succinate, fumarate, and D2HG act as competitive inhibitors of alpha-ketoglutarate-dependent dioxygenases [tet methylcytosine dioxygneases (TET), Jumoni C domain-containing histone lysine demethylases (JMJD), EGLNs, lysyl hydroxylase (LHD)] (Figure 1). ('oxygen', 'Chemical', 'MESH:D010100', (95, 101)) ('Succinate', 'Chemical', 'MESH:D019802', (0, 9)) ('JMJD', 'Disease', 'None', (202, 206)) ('fumarate', 'Chemical', 'MESH:D005650', (11, 19)) ('JMJD', 'Disease', (202, 206)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (63, 82)) ('D2HG', 'Chemical', 'MESH:C019417', (25, 29)) ('D2HG', 'Var', (25, 29)) 115306 29413423 Inhibiton of reactions mediated by alpha-ketoglutarate-dependent dioxygenases results in dysregulation of HIF degradation, DNA and histone hypermethylation, and inhibition of collagen maturation and folding (reviewed in). ('collagen maturation', 'CPA', (175, 194)) ('dysregulation of HIF degradation', 'Disease', 'MESH:D055959', (89, 121)) ('alpha-ketoglutarate', 'Chemical', 'MESH:D007656', (35, 54)) ('dysregulation of HIF degradation', 'Disease', (89, 121)) ('Inhibiton', 'Var', (0, 9)) ('histone hypermethylation', 'MPA', (131, 155)) ('inhibition', 'NegReg', (161, 171)) ('folding', 'CPA', (199, 206)) ('oxygen', 'Chemical', 'MESH:D010100', (67, 73)) 115379 29301496 The MRI characteristics of benign retroperitoneal schwannomas include hypointensity on T1WI and hyperintensity on T2WI, and neither is specific. ('benign retroperitoneal schwannomas', 'Disease', (27, 61)) ('T2WI', 'MPA', (114, 118)) ('schwannomas', 'Phenotype', 'HP:0100008', (50, 61)) ('schwannoma', 'Phenotype', 'HP:0100008', (50, 60)) ('benign retroperitoneal schwannomas', 'Disease', 'MESH:D009442', (27, 61)) ('hyperintensity', 'MPA', (96, 110)) ('T1WI', 'MPA', (87, 91)) ('hypointensity', 'Var', (70, 83)) 115466 28396811 This scoring system assesses vascular invasion, capsular invasion, extension into the periadrenal adipose tissue, the presence of focal or confluent necrosis, high cellularity, tumor cell spindling, cellular monotony, >3 mitoses per high-power field, atypical mitotic figures, profound nuclear pleomorphism, and increased tumor cell hyperchromasia. ('tumor cell hyperchromasia', 'Disease', 'MESH:D005935', (322, 347)) ('cell hyperchromasia', 'Phenotype', 'HP:0001022', (328, 347)) ('necrosis', 'Disease', 'MESH:D009336', (149, 157)) ('cellular monotony', 'CPA', (199, 216)) ('tumor cell hyperchromasia', 'Disease', (322, 347)) ('tumor', 'Disease', 'MESH:D009369', (322, 327)) ('tumor', 'Disease', 'MESH:D009369', (177, 182)) ('vascular invasion', 'CPA', (29, 46)) ('necrosis', 'Disease', (149, 157)) ('atypical', 'Var', (251, 259)) ('increased', 'PosReg', (312, 321)) ('tumor', 'Phenotype', 'HP:0002664', (177, 182)) ('tumor', 'Phenotype', 'HP:0002664', (322, 327)) ('nuclear pleomorphism', 'CPA', (286, 306)) ('tumor', 'Disease', (177, 182)) ('capsular invasion', 'CPA', (48, 65)) ('tumor', 'Disease', (322, 327)) 115473 28396811 Intraoperative manipulation of these tumors is frequently associated with profound hypertension. ('tumors', 'Phenotype', 'HP:0002664', (37, 43)) ('associated', 'Reg', (58, 68)) ('manipulation', 'Var', (15, 27)) ('profound', 'Disease', (74, 82)) ('hypertension', 'Disease', 'MESH:D006973', (83, 95)) ('tumor', 'Phenotype', 'HP:0002664', (37, 42)) ('tumors', 'Disease', (37, 43)) ('hypertension', 'Disease', (83, 95)) ('hypertension', 'Phenotype', 'HP:0000822', (83, 95)) ('tumors', 'Disease', 'MESH:D009369', (37, 43)) 115482 27896548 Four generations of SDHB-related disease: complexities in management SDHB mutations are linked to the familial paraganglioma syndrome type 4 (PGL4), which is associated with predominantly extra-adrenal disease and has high metastatic rates. ('SDHB', 'Gene', (69, 73)) ('extra-adrenal disease', 'Disease', 'MESH:D010236', (188, 209)) ('familial paraganglioma syndrome', 'Disease', (102, 133)) ('familial paraganglioma syndrome', 'Disease', 'MESH:D010235', (102, 133)) ('mutations', 'Var', (74, 83)) ('SDHB', 'Gene', (20, 24)) ('linked', 'Reg', (88, 94)) ('paraganglioma', 'Phenotype', 'HP:0002668', (111, 124)) ('extra-adrenal disease', 'Disease', (188, 209)) ('SDHB', 'Gene', '6390', (20, 24)) ('SDHB', 'Gene', '6390', (69, 73)) ('PGL4', 'Gene', '6390', (142, 146)) ('PGL4', 'Gene', (142, 146)) ('adrenal disease', 'Phenotype', 'HP:0000834', (194, 209)) 115483 27896548 Despite the lower penetrance rates in carriers of SDHB mutations compared to mutations in other paraganglioma susceptibility genes, the aggressive behavior of SDHB-linked disease warrants intensive surveillance to identify and resect tumors early. ('paraganglioma', 'Disease', 'MESH:D010235', (96, 109)) ('SDHB', 'Gene', '6390', (159, 163)) ('mutations', 'Var', (55, 64)) ('tumors', 'Phenotype', 'HP:0002664', (234, 240)) ('SDHB', 'Gene', (50, 54)) ('SDHB', 'Gene', (159, 163)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (136, 155)) ('paraganglioma', 'Phenotype', 'HP:0002668', (96, 109)) ('tumors', 'Disease', (234, 240)) ('SDHB-linked disease', 'Disease', (159, 178)) ('tumors', 'Disease', 'MESH:D009369', (234, 240)) ('paraganglioma', 'Disease', (96, 109)) ('SDHB-linked disease', 'Disease', 'MESH:D040181', (159, 178)) ('tumor', 'Phenotype', 'HP:0002664', (234, 239)) ('SDHB', 'Gene', '6390', (50, 54)) 115486 27896548 We present a case series of five SDHB mutation carriers over four generations from the same family to illustrate the complexities in management. ('SDHB', 'Gene', '6390', (33, 37)) ('mutation', 'Var', (38, 46)) ('SDHB', 'Gene', (33, 37)) 115489 27896548 Both germline and somatic mutations in susceptibility genes, of which more than a dozen have been identified so far, drive disease, with familial forms of PGL accounting for at least 40% of all tumors. ('tumor', 'Phenotype', 'HP:0002664', (194, 199)) ('familial forms of PGL', 'Disease', (137, 158)) ('drive', 'Reg', (117, 122)) ('mutations', 'Var', (26, 35)) ('tumors', 'Disease', 'MESH:D009369', (194, 200)) ('tumors', 'Phenotype', 'HP:0002664', (194, 200)) ('disease', 'Disease', (123, 130)) ('tumors', 'Disease', (194, 200)) 115492 27896548 Tumorigenesis is initiated with the 'second' hit and loss of heterozygosity at the SDH subunit gene locus, which leads to deactivation of the enzyme and impaired mitochondrial function. ('Tumorigenesis', 'CPA', (0, 13)) ('impaired', 'NegReg', (153, 161)) ('SDH', 'Gene', '6390', (83, 86)) ('mitochondrial function', 'MPA', (162, 184)) ('SDH', 'Gene', (83, 86)) ('impaired mitochondrial function', 'Phenotype', 'HP:0003287', (153, 184)) ('loss of heterozygosity', 'Var', (53, 75)) ('deactivation', 'NegReg', (122, 134)) ('enzyme', 'Enzyme', (142, 148)) 115494 27896548 More recently, the role of the SDHB gene as a driver of hypermethylation and thus silencing of key genes involved in neuroendocrine differentiation have been proposed. ('hypermethylation', 'Var', (56, 72)) ('SDHB', 'Gene', '6390', (31, 35)) ('SDHB', 'Gene', (31, 35)) ('silencing', 'NegReg', (82, 91)) 115495 27896548 Mutations of SDHB gene predispose to the familial PGL syndrome type 4 (PGL4), characterized by a high incidence of extra-adrenal PGLs and a high rate of metastasis. ('familial PGL syndrome', 'Disease', 'MESH:D010235', (41, 62)) ('predispose to', 'Reg', (23, 36)) ('PGLs', 'Phenotype', 'HP:0002668', (129, 133)) ('PGL4', 'Gene', '6390', (71, 75)) ('SDHB', 'Gene', '6390', (13, 17)) ('PGL4', 'Gene', (71, 75)) ('Mutations', 'Var', (0, 9)) ('SDHB', 'Gene', (13, 17)) ('familial PGL syndrome', 'Disease', (41, 62)) 115496 27896548 SDHB mutations carriers are predisposed to developing other tumors including renal cell carcinoma, gastrointestinal tumors (GIST) and rarely pituitary adenomas. ('gastrointestinal tumors', 'Disease', (99, 122)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (141, 159)) ('gastrointestinal tumors', 'Phenotype', 'HP:0007378', (99, 122)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (141, 159)) ('carcinoma', 'Phenotype', 'HP:0030731', (88, 97)) ('pituitary adenomas', 'Disease', (141, 159)) ('renal cell carcinoma', 'Disease', (77, 97)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (77, 97)) ('tumors', 'Phenotype', 'HP:0002664', (116, 122)) ('SDHB', 'Gene', (0, 4)) ('GIST', 'Phenotype', 'HP:0007378', (124, 128)) ('tumor', 'Phenotype', 'HP:0002664', (116, 121)) ('tumors', 'Phenotype', 'HP:0002664', (60, 66)) ('tumors', 'Disease', (116, 122)) ('gastrointestinal tumors', 'Disease', 'MESH:D004067', (99, 122)) ('mutations', 'Var', (5, 14)) ('tumor', 'Phenotype', 'HP:0002664', (60, 65)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (77, 97)) ('tumors', 'Disease', (60, 66)) ('tumors', 'Disease', 'MESH:D009369', (116, 122)) ('SDHB', 'Gene', '6390', (0, 4)) ('tumors', 'Disease', 'MESH:D009369', (60, 66)) 115497 27896548 Despite incomplete penetrance, morbidity and mortality are considerably higher in disease associated with SDHB mutations than disease linked to other SDHx mutations, which generally follow a more benign course. ('mutations', 'Var', (111, 120)) ('SDHB', 'Gene', '6390', (106, 110)) ('SDHx', 'Chemical', '-', (150, 154)) ('disease', 'Disease', (82, 89)) ('higher', 'PosReg', (72, 78)) ('SDHB', 'Gene', (106, 110)) 115498 27896548 Here we report on a unique family with four generations affected by a SDHB mutation and highlight the heterogeneity of presentation and consequent variation in management strategies tailored to the individual carrier. ('SDHB', 'Gene', '6390', (70, 74)) ('mutation', 'Var', (75, 83)) ('SDHB', 'Gene', (70, 74)) 115507 27896548 Genetic testing confirmed a novel missense variant of a G to A base substitution at nucleotide position 338 (c338G>A) in exon 4 of the SDHB gene. ('c338G>A', 'Var', (109, 116)) ('SDHB', 'Gene', '6390', (135, 139)) ('c338G>A', 'Mutation', 'c.338G>A', (109, 116)) ('SDHB', 'Gene', (135, 139)) 115508 27896548 The mutation results in the substitution of the amino acid cysteine for the amino acid tyrosine at codon 113 (p.Cys113Tyr). ('p.Cys113Tyr', 'Var', (110, 121)) ('results in', 'Reg', (13, 23)) ('p.Cys113Tyr', 'Mutation', 'p.C113Y', (110, 121)) ('amino acid tyrosine', 'Chemical', '-', (76, 95)) ('amino acid cysteine', 'Chemical', '-', (48, 67)) 115509 27896548 The father of the index subject tested positive for the familial SDHB mutation following familial screening. ('positive', 'Reg', (39, 47)) ('mutation', 'Var', (70, 78)) ('SDHB', 'Gene', '6390', (65, 69)) ('SDHB', 'Gene', (65, 69)) 115520 27896548 The younger son of the index subject tested positive for the familial SDHB mutation aged 6 years. ('SDHB', 'Gene', '6390', (70, 74)) ('mutation', 'Var', (75, 83)) ('SDHB', 'Gene', (70, 74)) ('positive', 'Reg', (44, 52)) 115524 27896548 We have presented a family of five subjects across four generations all affected by PGLs due to a familial missense SDHB mutation. ('PGLs', 'Phenotype', 'HP:0002668', (84, 88)) ('due to', 'Reg', (89, 95)) ('SDHB', 'Gene', '6390', (116, 120)) ('missense', 'Var', (107, 115)) ('SDHB', 'Gene', (116, 120)) ('mutation', 'Var', (121, 129)) ('affected', 'Reg', (72, 80)) 115525 27896548 Inactivating mutations of the SDHB gene are linked to the familial PGL syndrome type 4. ('familial PGL syndrome', 'Disease', 'MESH:D010235', (58, 79)) ('Inactivating mutations', 'Var', (0, 22)) ('SDHB', 'Gene', '6390', (30, 34)) ('SDHB', 'Gene', (30, 34)) ('linked', 'Reg', (44, 50)) ('familial PGL syndrome', 'Disease', (58, 79)) 115526 27896548 Germline SDHB mutations account for an estimated 22-38% of hereditary pheochromocytomas/PGLs. ('PGLs', 'Phenotype', 'HP:0002668', (88, 92)) ('SDHB', 'Gene', '6390', (9, 13)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (70, 87)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (70, 86)) ('SDHB', 'Gene', (9, 13)) ('hereditary pheochromocytomas', 'Disease', (59, 87)) ('hereditary pheochromocytomas', 'Disease', 'MESH:D010673', (59, 87)) ('mutations', 'Var', (14, 23)) 115531 27896548 The family described here demonstrates the marked heterogeneity of disease associated with SDHB mutations. ('SDHB', 'Gene', '6390', (91, 95)) ('SDHB', 'Gene', (91, 95)) ('mutations', 'Var', (96, 105)) 115532 27896548 Despite the same mutation, we note disease presenting from childhood to old age, an aggressive disease phenotype in some individuals with local invasive disease and multiple tumors (subject 1), metastatic disease (subject 3) and seemingly benign PGL in subject 2. ('metastatic disease', 'Disease', (194, 212)) ('aggressive disease', 'Disease', (84, 102)) ('multiple tumors', 'Disease', (165, 180)) ('multiple tumors', 'Disease', 'MESH:D009369', (165, 180)) ('local invasive disease', 'Disease', 'MESH:D012594', (138, 160)) ('mutation', 'Var', (17, 25)) ('tumors', 'Phenotype', 'HP:0002664', (174, 180)) ('child', 'Species', '9606', (59, 64)) ('tumor', 'Phenotype', 'HP:0002664', (174, 179)) ('local invasive disease', 'Disease', (138, 160)) ('aggressive disease', 'Disease', 'MESH:D001523', (84, 102)) 115535 27896548 This may suggest a mutation-specific preponderance for disease; however, a lack of clear genotype-phenotype correlation in SDHB mutations has previously been reported. ('mutations', 'Var', (128, 137)) ('SDHB', 'Gene', (123, 127)) ('SDHB', 'Gene', '6390', (123, 127)) 115536 27896548 SDHB mutation carriers require lifelong biochemical and clinical surveillance due to these variations in presentation and the considerable risk of metastatic disease. ('metastatic', 'CPA', (147, 157)) ('SDHB', 'Gene', '6390', (0, 4)) ('mutation', 'Var', (5, 13)) ('SDHB', 'Gene', (0, 4)) 115556 26683930 These tumors may occur sporadically or secondarily to germline mutations of several tumor-susceptibility genes. ('tumor', 'Disease', 'MESH:D009369', (84, 89)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('tumor', 'Phenotype', 'HP:0002664', (84, 89)) ('germline mutations', 'Var', (54, 72)) ('tumors', 'Disease', (6, 12)) ('tumor', 'Disease', (84, 89)) ('tumors', 'Disease', 'MESH:D009369', (6, 12)) ('tumor', 'Disease', 'MESH:D009369', (6, 11)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) ('tumor', 'Disease', (6, 11)) 115652 26457353 Urinary bladder paragangliomas: How Immunohistochemistry can assist to identify patients with SDHB germ line and somatic mutations Urinary bladder paraganglioma (paraganglioma) is a rare tumor of chromaffin cells of the sympathetic system of the urinary bladder wall. ('Urinary bladder paragangliomas', 'Disease', 'MESH:D001745', (0, 30)) ('mutations', 'Var', (121, 130)) ('patients', 'Species', '9606', (80, 88)) ('tumor of chromaffin cells', 'Phenotype', 'HP:0002666', (187, 212)) ('chromaffin', 'Chemical', '-', (196, 206)) ('paraganglioma', 'Disease', (147, 160)) ('tumor', 'Disease', (187, 192)) ('paraganglioma', 'Disease', 'MESH:D010235', (147, 160)) ('paraganglioma', 'Disease', (162, 175)) ('paraganglioma', 'Phenotype', 'HP:0002668', (16, 29)) ('paragangliomas', 'Phenotype', 'HP:0002668', (16, 30)) ('SDHB', 'Gene', '6390', (94, 98)) ('tumor', 'Disease', 'MESH:D009369', (187, 192)) ('paraganglioma', 'Disease', 'MESH:D010235', (162, 175)) ('Urinary bladder paraganglioma', 'Disease', (131, 160)) ('paraganglioma', 'Phenotype', 'HP:0002668', (147, 160)) ('Urinary bladder paraganglioma', 'Disease', 'MESH:D001745', (131, 160)) ('Urinary bladder paragangliomas', 'Disease', (0, 30)) ('SDHB', 'Gene', (94, 98)) ('tumor', 'Phenotype', 'HP:0002664', (187, 192)) ('paraganglioma', 'Phenotype', 'HP:0002668', (162, 175)) ('paraganglioma', 'Disease', (16, 29)) ('paraganglioma', 'Disease', 'MESH:D010235', (16, 29)) ('Urinary bladder paraganglioma', 'Disease', 'MESH:D001745', (0, 29)) 115653 26457353 We studied 14 cases of this entity and investigated the usefulness of SDHB protein staining by immunohistochemistry (IHC) as a diagnostic tool to identify patients with bladder paragangliomas that could be associated with SDHB gene mutations, since these patient have a more aggressive disease. ('bladder paragangliomas', 'Disease', 'MESH:D001745', (169, 191)) ('SDHB', 'Gene', '6390', (70, 74)) ('SDHB', 'Gene', (70, 74)) ('bladder paragangliomas', 'Disease', (169, 191)) ('associated', 'Reg', (206, 216)) ('SDHB', 'Gene', '6390', (222, 226)) ('patient', 'Species', '9606', (255, 262)) ('patient', 'Species', '9606', (155, 162)) ('mutations', 'Var', (232, 241)) ('SDHB', 'Gene', (222, 226)) ('aggressive disease', 'Disease', 'MESH:D001523', (275, 293)) ('patients', 'Species', '9606', (155, 163)) ('paraganglioma', 'Phenotype', 'HP:0002668', (177, 190)) ('paragangliomas', 'Phenotype', 'HP:0002668', (177, 191)) ('aggressive disease', 'Disease', (275, 293)) 115656 26457353 Five out of these 6 negative cases were confirmed to be positive for germline SDHB mutations. ('SDHB', 'Gene', (78, 82)) ('mutations', 'Var', (83, 92)) ('SDHB', 'Gene', '6390', (78, 82)) 115661 26457353 Our study confirms that there is very good correlation between the presence of an SDHB mutation, whether germline or sporadic, and negative SDHB IHC staining in urinary bladder paragangliomas, and represents the first study to demonstrate that somatic mutations can be recognized by IHC staining. ('paragangliomas', 'Phenotype', 'HP:0002668', (177, 191)) ('SDHB', 'Gene', '6390', (82, 86)) ('urinary bladder paragangliomas', 'Disease', (161, 191)) ('SDHB', 'Gene', (82, 86)) ('SDHB', 'Gene', '6390', (140, 144)) ('SDHB', 'Gene', (140, 144)) ('mutation', 'Var', (87, 95)) ('paraganglioma', 'Phenotype', 'HP:0002668', (177, 190)) ('urinary bladder paragangliomas', 'Disease', 'MESH:D001745', (161, 191)) 115668 26457353 One of these familial paraganglioma syndromes is associated with distinct genetic mutations in one of the four subunits genes of the succinate dehydrogenase (SDH-A, B, C or D), an enzyme complex which is involved in the electron transport chain and in the Krebs cycle. ('succinate dehydrogenase', 'Gene', '6390', (133, 156)) ('Krebs', 'Chemical', '-', (256, 261)) ('succinate dehydrogenase', 'Gene', (133, 156)) ('familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (13, 45)) ('associated', 'Reg', (49, 59)) ('mutations', 'Var', (82, 91)) ('paraganglioma', 'Phenotype', 'HP:0002668', (22, 35)) ('familial paraganglioma syndromes', 'Disease', (13, 45)) ('SDH-A, B, C or D', 'Gene', '6389;6390;6391;6392', (158, 174)) 115670 26457353 In particular, germline mutations in the SDHB gene have been associated with hereditary forms of bladder paraganglioma and their more aggressive and metastatic behavior. ('bladder paraganglioma', 'Disease', (97, 118)) ('bladder paraganglioma', 'Disease', 'MESH:D001745', (97, 118)) ('SDHB', 'Gene', '6390', (41, 45)) ('associated', 'Reg', (61, 71)) ('SDHB', 'Gene', (41, 45)) ('paraganglioma', 'Phenotype', 'HP:0002668', (105, 118)) ('germline mutations', 'Var', (15, 33)) 115671 26457353 Somatic SDHB mutations have also been described. ('mutations', 'Var', (13, 22)) ('SDHB', 'Gene', '6390', (8, 12)) ('SDHB', 'Gene', (8, 12)) 115672 26457353 Since SDHB mutations are associated with the highest rate of malignancy (greater than 50%), recognition and accurate tumor characterization for SDHB gene mutation status are of utmost importance for the management, prognosis and proper follow-up of these patients and their families. ('mutations', 'Var', (11, 20)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('associated', 'Reg', (25, 35)) ('tumor', 'Disease', (117, 122)) ('tumor', 'Disease', 'MESH:D009369', (117, 122)) ('SDHB', 'Gene', '6390', (144, 148)) ('patients', 'Species', '9606', (255, 263)) ('SDHB', 'Gene', '6390', (6, 10)) ('malignancy', 'Disease', 'MESH:D009369', (61, 71)) ('men', 'Species', '9606', (209, 212)) ('SDHB', 'Gene', (144, 148)) ('malignancy', 'Disease', (61, 71)) ('SDHB', 'Gene', (6, 10)) 115674 26457353 Therefore, in the present study we investigated the usefulness of SDHB protein presence or absence as a diagnostic tool to identify bladder paragangliomas associated with SDHB gene mutations using staining by immunohistochemistry (IHC) in paraffin-embedded sections. ('SDHB', 'Gene', (66, 70)) ('bladder paragangliomas', 'Disease', (132, 154)) ('paraganglioma', 'Phenotype', 'HP:0002668', (140, 153)) ('paragangliomas', 'Phenotype', 'HP:0002668', (140, 154)) ('associated', 'Reg', (155, 165)) ('SDHB', 'Gene', '6390', (171, 175)) ('mutations', 'Var', (181, 190)) ('paraffin', 'Chemical', 'MESH:D010232', (239, 247)) ('SDHB', 'Gene', '6390', (66, 70)) ('SDHB', 'Gene', (171, 175)) ('bladder paragangliomas', 'Disease', 'MESH:D001745', (132, 154)) 115693 26457353 For each probe, significant deviations from a 1:1 ratio between signals from normal control samples and patient samples indicate possible deletions or insertions/duplications. ('patient', 'Species', '9606', (104, 111)) ('insertions/duplications', 'Var', (151, 174)) ('deletions', 'Var', (138, 147)) 115696 26457353 Of these 6 negative staining cases, 5 were confirmed positive for germline SDHB mutations, the remaining case was negative for SDHB germline mutation but further investigation confirmed an SDHB somatic mutation as described below. ('positive', 'Reg', (53, 61)) ('mutations', 'Var', (80, 89)) ('SDHB', 'Gene', '6390', (127, 131)) ('SDHB', 'Gene', '6390', (75, 79)) ('SDHB', 'Gene', (127, 131)) ('SDHB', 'Gene', (75, 79)) ('SDHB', 'Gene', '6390', (189, 193)) ('SDHB', 'Gene', (189, 193)) 115697 26457353 Five of the 11 stained cases showing strong cytoplasmic staining were negative for the presence of SDHB mutations, but four were positive for VHL gene mutation (and one unknown). ('positive', 'Reg', (129, 137)) ('mutations', 'Var', (104, 113)) ('VHL', 'Gene', '7428', (142, 145)) ('negative', 'NegReg', (70, 78)) ('SDHB', 'Gene', '6390', (99, 103)) ('SDHB', 'Gene', (99, 103)) ('VHL', 'Gene', (142, 145)) 115704 26457353 Of these, 4 patients were found to have VHL mutations, 6 patients had SDHB mutations, (5 were available for staining). ('SDHB', 'Gene', '6390', (70, 74)) ('patients', 'Species', '9606', (12, 20)) ('SDHB', 'Gene', (70, 74)) ('VHL', 'Gene', (40, 43)) ('patients', 'Species', '9606', (57, 65)) ('VHL', 'Gene', '7428', (40, 43)) ('mutations', 'Var', (44, 53)) ('mutations', 'Var', (75, 84)) 115706 26457353 The remaining 4 patients had germline mutations in the VHL gene, and one was sporadic. ('VHL', 'Gene', (55, 58)) ('patients', 'Species', '9606', (16, 24)) ('VHL', 'Gene', '7428', (55, 58)) ('germline mutations', 'Var', (29, 47)) 115714 26457353 Only one case showed negative staining and no germline SDHB mutation, however, further investigation of the tumor using complete genotyping of the SDHB gene using multiplex ligation-dependent probe amplification (MLPA) revealed a somatic SDHB deletion (Figure 2). ('tumor', 'Disease', 'MESH:D009369', (108, 113)) ('SDHB', 'Gene', (55, 59)) ('SDHB', 'Gene', '6390', (238, 242)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('SDHB', 'Gene', (238, 242)) ('deletion', 'Var', (243, 251)) ('tumor', 'Disease', (108, 113)) ('SDHB', 'Gene', '6390', (147, 151)) ('SDHB', 'Gene', (147, 151)) ('SDHB', 'Gene', '6390', (55, 59)) 115720 26457353 Recently a single aberrant somatic mutation has been described in a bladder wall paraganglioma: a C299T mutation was found in the SDHB gene in tumor DNA and not in the normal tissue from the same patient, excluding an SDHB germline mutation. ('C299T', 'Var', (98, 103)) ('bladder wall paraganglioma', 'Disease', (68, 94)) ('paraganglioma', 'Phenotype', 'HP:0002668', (81, 94)) ('tumor', 'Disease', (143, 148)) ('SDHB', 'Gene', '6390', (218, 222)) ('SDHB', 'Gene', '6390', (130, 134)) ('SDHB', 'Gene', (218, 222)) ('C299T', 'Mutation', 'rs121917755', (98, 103)) ('patient', 'Species', '9606', (196, 203)) ('bladder wall paraganglioma', 'Disease', 'MESH:D010235', (68, 94)) ('SDHB', 'Gene', (130, 134)) ('tumor', 'Disease', 'MESH:D009369', (143, 148)) ('tumor', 'Phenotype', 'HP:0002664', (143, 148)) 115723 26457353 Building on these and other findings, here we identified a patient with a negative SDHB germline mutation and negative IHC SDHB staining for further analysis using complete genotyping of the SDHB gene using multiplex ligation-dependent probe amplification (MLPA). ('negative', 'NegReg', (74, 82)) ('SDHB', 'Gene', (83, 87)) ('SDHB', 'Gene', (191, 195)) ('patient', 'Species', '9606', (59, 66)) ('SDHB', 'Gene', '6390', (123, 127)) ('SDHB', 'Gene', (123, 127)) ('mutation', 'Var', (97, 105)) ('SDHB', 'Gene', '6390', (83, 87)) ('SDHB', 'Gene', '6390', (191, 195)) 115727 26457353 One of the three patients also had a loss of SDHA mutation. ('SDHA', 'Gene', (45, 49)) ('patients', 'Species', '9606', (17, 25)) ('loss', 'NegReg', (37, 41)) ('SDHA', 'Gene', '6389', (45, 49)) ('mutation', 'Var', (50, 58)) 115735 26457353 Our results indicate a direct correlation between the presence of an SDHB mutation, whether germline or somatic, and negative SDHB IHC staining in urinary bladder paragangliomas. ('SDHB', 'Gene', '6390', (69, 73)) ('mutation', 'Var', (74, 82)) ('SDHB', 'Gene', (69, 73)) ('urinary bladder paragangliomas', 'Disease', 'MESH:D001745', (147, 177)) ('urinary bladder paragangliomas', 'Disease', (147, 177)) ('paraganglioma', 'Phenotype', 'HP:0002668', (163, 176)) ('SDHB', 'Gene', '6390', (126, 130)) ('paragangliomas', 'Phenotype', 'HP:0002668', (163, 177)) ('SDHB', 'Gene', (126, 130)) 115746 24100192 The development of colorectal cancer, the second most common cause of cancer death in the United States, is associated with the accumulation of somatic gene mutations that promote cell dysplasia. ('cancer death', 'Disease', 'MESH:D003643', (70, 82)) ('cancer death', 'Disease', (70, 82)) ('rectal cancer', 'Phenotype', 'HP:0100743', (23, 36)) ('cancer', 'Phenotype', 'HP:0002664', (70, 76)) ('cancer', 'Phenotype', 'HP:0002664', (30, 36)) ('colorectal cancer', 'Disease', 'MESH:D015179', (19, 36)) ('promote', 'PosReg', (172, 179)) ('mutations', 'Var', (157, 166)) ('colorectal cancer', 'Phenotype', 'HP:0003003', (19, 36)) ('dysplasia', 'Disease', (185, 194)) ('colorectal cancer', 'Disease', (19, 36)) ('dysplasia', 'Disease', 'MESH:D004476', (185, 194)) 115994 33462603 As first-line treatment in patients with metastatic disease, 177Lu-DOTATATE or 131I-MIBG is recommended, depending on which shows best expression. ('177Lu-DOTATATE', 'Var', (61, 75)) ('patients', 'Species', '9606', (27, 35)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (61, 75)) ('131I-MIBG', 'Var', (79, 88)) ('metastatic disease', 'Disease', (41, 59)) ('-MIBG', 'Chemical', 'MESH:D019797', (83, 88)) 116008 33462603 The majority of PPGLs are currently diagnosed through the workup of an incidentaloma, secondly due to symptoms of catecholamine excess, and lastly during catecholamine screening in a patient with an established familial syndrome (eg, MEN2, von Hippel Lindau syndrome, neurofibromatosis type 1, and patients with hereditary PPGL due to susceptibility gene mutations in succinate dehydrogenase [SDHB, C, D], TMEM-127, MAX, FH, EPAS1/HIF-2alpha, or MDH2). ('MDH2', 'Gene', '4191', (446, 450)) ('MAX', 'Gene', (416, 419)) ('EPAS1', 'Gene', (425, 430)) ('PPGLs', 'Disease', (16, 21)) ('neurofibromatosis type 1', 'Gene', (268, 292)) ('patient', 'Species', '9606', (183, 190)) ('TMEM-127', 'Gene', '55654', (406, 414)) ('HIF-2alpha', 'Gene', '2034', (431, 441)) ('neurofibromatosis', 'Phenotype', 'HP:0001067', (268, 285)) ('von Hippel Lindau syndrome', 'Disease', (240, 266)) ('patients', 'Species', '9606', (298, 306)) ('PPGL', 'Disease', (323, 327)) ('catecholamine excess', 'Phenotype', 'HP:0003334', (114, 134)) ('SDHB', 'Gene', '6390', (393, 397)) ('catecholamine', 'Chemical', 'MESH:D002395', (154, 167)) ('diagnosed', 'Reg', (36, 45)) ('mutations', 'Var', (355, 364)) ('MDH2', 'Gene', (446, 450)) ('PPGLs', 'Chemical', '-', (16, 21)) ('EPAS1', 'Gene', '2034', (425, 430)) ('TMEM-127', 'Gene', (406, 414)) ('familial syndrome', 'Disease', (211, 228)) ('HIF-2alpha', 'Gene', (431, 441)) ('PPGL', 'Chemical', '-', (16, 20)) ('von Hippel Lindau syndrome', 'Disease', 'MESH:D006623', (240, 266)) ('neurofibromatosis type 1', 'Gene', '4763', (268, 292)) ('catecholamine', 'Chemical', 'MESH:D002395', (114, 127)) ('familial syndrome', 'Disease', 'MESH:D061325', (211, 228)) ('PPGL', 'Chemical', '-', (323, 327)) ('succinate', 'Chemical', 'MESH:D019802', (368, 377)) ('patient', 'Species', '9606', (298, 305)) ('SDHB', 'Gene', (393, 397)) 116009 33462603 Rarely, PPGLs may also produce other hormones, most commonly adrenocorticotropic hormone (ACTH) and may then present with clinical findings consistent with, eg, Cushing syndrome. ('PPGLs', 'Chemical', '-', (8, 13)) ('PPGLs', 'Var', (8, 13)) ('adrenocorticotropic hormone', 'MPA', (61, 88)) ('ACTH', 'Gene', '5443', (90, 94)) ('Cushing syndrome', 'Phenotype', 'HP:0003118', (161, 177)) ('Cushing syndrome', 'Disease', (161, 177)) ('Cushing syndrome', 'Disease', 'MESH:D003480', (161, 177)) ('produce', 'MPA', (23, 30)) ('present', 'Reg', (109, 116)) ('ACTH', 'Gene', (90, 94)) 116037 33462603 In SDHx mutation carriers, however, the sensitivity of 123I-MIBG scintigraphy is lower than for other imaging methods, especially in patients with thoracic paragangliomas (sensitivity 30.8% for 123I-MIBG scintigraphy compared with 61.5% for somatostatin receptor scintigraphy and 46.2% for CT scan), which was shown in a large prospective multicenter study. ('123I-MIBG', 'Chemical', 'MESH:D019797', (194, 203)) ('lower', 'NegReg', (81, 86)) ('thoracic paragangliomas', 'Disease', 'MESH:D010235', (147, 170)) ('SDH', 'Gene', (3, 6)) ('patients', 'Species', '9606', (133, 141)) ('paragangliomas', 'Phenotype', 'HP:0002668', (156, 170)) ('thoracic paragangliomas', 'Disease', (147, 170)) ('mutation', 'Var', (8, 16)) ('paraganglioma', 'Phenotype', 'HP:0002668', (156, 169)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (55, 64)) ('sensitivity', 'MPA', (40, 51)) ('SDH', 'Gene', '6390', (3, 6)) 116048 33462603 In metastatic PPGL, 68Ga-DOTATOC/DOTATATE PET is first choice, 18FDOPA PET may be used as second-line in patients with no known SDHB mutation, 18F-FDG PET as second-line in patients with SDHB mutation and 123I-MIBG scintigraphy to determine whether the patient is suitable for 131I-MIBG therapy. ('SDHB', 'Gene', '6390', (187, 191)) ('patient', 'Species', '9606', (105, 112)) ('SDHB', 'Gene', (128, 132)) ('SDHB', 'Gene', (187, 191)) ('patients', 'Species', '9606', (105, 113)) ('patient', 'Species', '9606', (253, 260)) ('patients', 'Species', '9606', (173, 181)) ('18F-FDG', 'Chemical', 'MESH:D019788', (143, 150)) ('mutation', 'Var', (192, 200)) ('-MIBG', 'Chemical', 'MESH:D019797', (281, 286)) ('-MIBG', 'Chemical', 'MESH:D019797', (209, 214)) ('PPGL', 'Chemical', '-', (14, 18)) ('patient', 'Species', '9606', (173, 180)) ('SDHB', 'Gene', '6390', (128, 132)) ('DOTATATE', 'Chemical', '-', (33, 41)) ('18FDOPA', 'Chemical', '-', (63, 70)) ('123I-MIBG', 'Chemical', 'MESH:D019797', (205, 214)) 116049 33462603 Despite the rather high accuracy of biochemical and imaging analyses in pinpointing PPGLs in the clinical setting, pathology remains the gold standard for diagnostic purposes. ('PPGLs', 'Gene', (84, 89)) ('pinpointing', 'Var', (72, 83)) ('PPGLs', 'Chemical', '-', (84, 89)) 116064 33462603 Cluster 1 PPGLs display a pattern of mRNAs related to pathways associated to hypoxia, and tumors in this cluster often display mutations in VHL as well as members of the SDHx gene family (most notably SDHB and SDHD), while cluster 2 PPGLs are enriched for cases with mutations in RET, NF1, and HRAS, to name a few. ('SDH', 'Gene', (210, 213)) ('tumors', 'Disease', 'MESH:D009369', (90, 96)) ('PPGLs', 'Chemical', '-', (233, 238)) ('PPGLs', 'Chemical', '-', (10, 15)) ('SDH', 'Gene', (201, 204)) ('NF1', 'Gene', (285, 288)) ('SDH', 'Gene', (170, 173)) ('RET', 'Gene', (280, 283)) ('display', 'Reg', (119, 126)) ('VHL', 'Gene', (140, 143)) ('mutations', 'Var', (127, 136)) ('SDHB', 'Gene', '6390', (201, 205)) ('hypoxia', 'Disease', (77, 84)) ('tumors', 'Phenotype', 'HP:0002664', (90, 96)) ('HRAS', 'Gene', '3265', (294, 298)) ('SDHD', 'Gene', '6392', (210, 214)) ('HRAS', 'Gene', (294, 298)) ('VHL', 'Gene', '7428', (140, 143)) ('hypoxia', 'Disease', 'MESH:D000860', (77, 84)) ('SDH', 'Gene', '6390', (210, 213)) ('SDHB', 'Gene', (201, 205)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('SDH', 'Gene', '6390', (201, 204)) ('tumors', 'Disease', (90, 96)) ('SDH', 'Gene', '6390', (170, 173)) ('RET', 'Gene', '5979', (280, 283)) ('SDHD', 'Gene', (210, 214)) ('NF1', 'Gene', '4763', (285, 288)) 116066 33462603 The most notable predictor of aggressive clinical behavior is the presence of a germline SDHB mutation, as these mutations predispose the familial paraganglioma-pheochromocytoma syndrome PLG4, which is tightly coupled to the development of abdominal paragangliomas that are often metastatic. ('familial paraganglioma-pheochromocytoma syndrome', 'Disease', 'MESH:C531777', (138, 186)) ('paraganglioma', 'Phenotype', 'HP:0002668', (147, 160)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (161, 177)) ('paraganglioma', 'Phenotype', 'HP:0002668', (250, 263)) ('familial paraganglioma-pheochromocytoma syndrome', 'Disease', (138, 186)) ('mutation', 'Var', (94, 102)) ('paragangliomas', 'Phenotype', 'HP:0002668', (250, 264)) ('mutations', 'Var', (113, 122)) ('SDHB', 'Gene', '6390', (89, 93)) ('predispose', 'Reg', (123, 133)) ('abdominal paragangliomas', 'Disease', 'MESH:D010235', (240, 264)) ('aggressive clinical behavior', 'Phenotype', 'HP:0000718', (30, 58)) ('abdominal paragangliomas', 'Disease', (240, 264)) ('SDHB', 'Gene', (89, 93)) 116068 33462603 In addition to SDH gene family mutations, other members of the Krebs cycle and/or mitochondrial metabolism have also been implicated in the development of PPGLs, of which several have proven metastatic, including germline mutations in the mitochondrial 2-oxoglutarate/malate carrier SLC25A11, the glutamic-oxaloacetic transaminase 2 (GOT2) gene as well as the dihydrolipoamide S-succinyltransferase (DLST) gene. ('GOT2', 'Gene', '2806', (334, 338)) ('implicated', 'Reg', (122, 132)) ('glutamic-oxaloacetic transaminase 2', 'Gene', '2806', (297, 332)) ('dihydrolipoamide S-succinyltransferase', 'Gene', (360, 398)) ('malate', 'Chemical', 'MESH:C030298', (268, 274)) ('SDH', 'Gene', '6390', (15, 18)) ('SLC25A11', 'Gene', (283, 291)) ('mutations', 'Var', (222, 231)) ('GOT2', 'Gene', (334, 338)) ('mutations', 'Var', (31, 40)) ('SLC25A11', 'Gene', '8402', (283, 291)) ('Krebs', 'Chemical', '-', (63, 68)) ('DLST', 'Gene', '1743', (400, 404)) ('glutamic-oxaloacetic transaminase 2', 'Gene', (297, 332)) ('2-oxoglutarate', 'Chemical', 'MESH:D007656', (253, 267)) ('SDH', 'Gene', (15, 18)) ('PPGLs', 'Chemical', '-', (155, 160)) ('dihydrolipoamide S-succinyltransferase', 'Gene', '1743', (360, 398)) ('DLST', 'Gene', (400, 404)) 116069 33462603 In all, these findings provide a strong link between mutations in Krebs cycle related genes and metastatic properties of PPGLs, and mitochondrial pathways could potentially constitute a platform for future therapeutic targets. ('link', 'Reg', (40, 44)) ('mutations', 'Var', (53, 62)) ('Krebs', 'Gene', (66, 71)) ('Krebs', 'Chemical', '-', (66, 71)) ('PPGLs', 'Chemical', '-', (121, 126)) ('metastatic properties', 'CPA', (96, 117)) 116070 33462603 For example, PPGLs exhibiting SDHx gene mutations and a deficient succinate dehydrogenase enzyme will accumulate succinate, in turn leading to inhibition of various DNA demethylases and the acquired hypermethylation of tumor DNA. ('succinate', 'Chemical', 'MESH:D019802', (113, 122)) ('tumor', 'Phenotype', 'HP:0002664', (219, 224)) ('SDH', 'Gene', (30, 33)) ('succinate', 'MPA', (113, 122)) ('tumor', 'Disease', (219, 224)) ('PPGLs', 'Chemical', '-', (13, 18)) ('inhibition', 'NegReg', (143, 153)) ('mutations', 'Var', (40, 49)) ('DNA demethylases', 'Enzyme', (165, 181)) ('hypermethylation', 'MPA', (199, 215)) ('SDH', 'Gene', '6390', (30, 33)) ('tumor', 'Disease', 'MESH:D009369', (219, 224)) ('accumulate', 'PosReg', (102, 112)) ('deficient succinate', 'Phenotype', 'HP:0020149', (56, 75)) ('succinate', 'Chemical', 'MESH:D019802', (66, 75)) 116071 33462603 As O-6-methylguanine-DNA methyltransferase (MGMT) is one of the epigenetically silenced genes in SDHx mutated PPGLs, this could probably explain the partial response in SDHx mutated PPGL patients using temozolomide. ('O-6-methylguanine-DNA methyltransferase', 'Gene', '4255', (3, 42)) ('patients', 'Species', '9606', (187, 195)) ('mutated', 'Var', (102, 109)) ('O-6-methylguanine-DNA methyltransferase', 'Gene', (3, 42)) ('SDH', 'Gene', '6390', (169, 172)) ('temozolomide', 'Chemical', 'MESH:D000077204', (202, 214)) ('SDH', 'Gene', '6390', (97, 100)) ('MGMT', 'Gene', (44, 48)) ('SDH', 'Gene', (97, 100)) ('MGMT', 'Gene', '4255', (44, 48)) ('PPGL', 'Chemical', '-', (182, 186)) ('SDH', 'Gene', (169, 172)) ('PPGL', 'Chemical', '-', (110, 114)) ('PPGLs', 'Chemical', '-', (110, 115)) 116074 33462603 Interestingly, while TET inhibition alone was insufficient to drive PPGL cells into an invasive phenotype in functional experiments, the synergistic activation of HIF2alpha facilitated the acquisition of metastatic traits:thereby opening up for future potential therapeutic strategies targeting the HIF-TET axis in clinical studies. ('facilitated', 'PosReg', (173, 184)) ('HIF2alpha', 'Gene', (163, 172)) ('acquisition', 'CPA', (189, 200)) ('synergistic', 'Var', (137, 148)) ('TET', 'Chemical', '-', (21, 24)) ('PPGL', 'Chemical', '-', (68, 72)) ('metastatic traits', 'CPA', (204, 221)) ('HIF2alpha', 'Gene', '2034', (163, 172)) ('TET', 'Chemical', '-', (303, 306)) ('activation', 'PosReg', (149, 159)) ('opening up', 'Reg', (230, 240)) 116075 33462603 Other, nonmitochondrial related genetic aberrances coupled to metastatic PPGLs include MAML3 fusions, somatic mutations in SETD2 and ATRX, as well as TERT promoter structural variants and noncoding mutations. ('mutations', 'Var', (110, 119)) ('TERT', 'Gene', (150, 154)) ('SETD2', 'Gene', '29072', (123, 128)) ('ATRX', 'Gene', '546', (133, 137)) ('TERT', 'Gene', '7015', (150, 154)) ('MAML3', 'Gene', '55534', (87, 92)) ('noncoding mutations', 'Var', (188, 207)) ('SETD2', 'Gene', (123, 128)) ('MAML3', 'Gene', (87, 92)) ('PPGLs', 'Chemical', '-', (73, 78)) ('ATRX', 'Gene', (133, 137)) 116081 33462603 The most frequent drugs used are phenoxybenzamine, a nonselective and noncompetitive alpha-1 and alpha-2 adrenergic receptor blocker, and doxazosin, a selective and competitive alpha-1 adrenergic receptor blocker. ('alpha-1', 'Gene', '597', (85, 92)) ('phenoxybenzamine', 'Var', (33, 49)) ('doxazosin', 'Chemical', 'MESH:D017292', (138, 147)) ('alpha-1', 'Gene', (177, 184)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (33, 49)) ('alpha-1', 'Gene', (85, 92)) ('alpha-1', 'Gene', '597', (177, 184)) 116094 33462603 Metyrosine (alpha-methylthyrosine), which inhibits the enzyme thyrosine hydroxylase and thereby depletes the levels of epinephrine, norepinephrine, and dopamine, markedly reduced catecholamine secretion in up to 1 in 4 of those using it for chronic treatment; however, nowadays it is not often used in clinical practice. ('epinephrine', 'Chemical', 'MESH:D004837', (135, 146)) ('Metyrosine', 'Chemical', '-', (0, 10)) ('catecholamine', 'Chemical', 'MESH:D002395', (179, 192)) ('catecholamine secretion', 'MPA', (179, 202)) ('norepinephrine', 'Chemical', 'MESH:D009638', (132, 146)) ('inhibits', 'NegReg', (42, 50)) ('thyrosine', 'Chemical', '-', (24, 33)) ('thyrosine', 'Chemical', '-', (62, 71)) ('epinephrine', 'Chemical', 'MESH:D004837', (119, 130)) ('reduced catecholamine secretion', 'Phenotype', 'HP:0003334', (171, 202)) ('dopamine', 'Chemical', 'MESH:D004298', (152, 160)) ('alpha-methylthyrosine', 'Chemical', '-', (12, 33)) ('thyrosine', 'MPA', (62, 71)) ('depletes', 'NegReg', (96, 104)) ('levels of epinephrine', 'MPA', (109, 130)) ('Metyrosine', 'Var', (0, 10)) ('reduced', 'NegReg', (171, 178)) 116112 33462603 In a consecutive retrospective study, 15 patients with PPGLs, among whom 10 (67%) had SDHB mutation, were treated with temozolomide (median dose 172 mg/m2) daily for 5 days every 28 days. ('SDHB', 'Gene', (86, 90)) ('mutation', 'Var', (91, 99)) ('patients', 'Species', '9606', (41, 49)) ('PPGLs', 'Chemical', '-', (55, 60)) ('temozolomide', 'Chemical', 'MESH:D000077204', (119, 131)) ('SDHB', 'Gene', '6390', (86, 90)) 116114 33462603 Partial response was only seen in patients with SDHB mutation. ('SDHB', 'Gene', '6390', (48, 52)) ('patients', 'Species', '9606', (34, 42)) ('mutation', 'Var', (53, 61)) ('SDHB', 'Gene', (48, 52)) 116128 33462603 In another study, high-specific-activity 131I-MIBG was administered to 68 patients, 49 with pheochromocytoma and 19 with paraganglioma, all metastatic, who received 1 (19 patients) or 2 doses (50 patients) of 18.5 GBq (500 mCi); in 1 patient, the dose was reduced to 3.8 GBq (102 mCi) due to high tumor burden. ('GBq', 'Chemical', '-', (271, 274)) ('patient', 'Species', '9606', (74, 81)) ('patients', 'Species', '9606', (196, 204)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (92, 108)) ('131I-MIBG', 'Var', (41, 50)) ('-MIBG', 'Chemical', 'MESH:D019797', (45, 50)) ('tumor', 'Disease', (297, 302)) ('pheochromocytoma', 'Disease', (92, 108)) ('tumor', 'Disease', 'MESH:D009369', (297, 302)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (92, 108)) ('patients', 'Species', '9606', (171, 179)) ('paraganglioma', 'Disease', (121, 134)) ('GBq', 'Chemical', '-', (214, 217)) ('paraganglioma', 'Disease', 'MESH:D010235', (121, 134)) ('patients', 'Species', '9606', (74, 82)) ('patient', 'Species', '9606', (196, 203)) ('tumor', 'Phenotype', 'HP:0002664', (297, 302)) ('patient', 'Species', '9606', (171, 178)) ('paraganglioma', 'Phenotype', 'HP:0002668', (121, 134)) ('patient', 'Species', '9606', (234, 241)) 116139 33462603 Lutetium-177 (177Lu) and Yttrium-90 (90Y) emit beta particles; 177Lu in addition emits gamma rays. ('Lutetium', 'Chemical', 'MESH:D008187', (0, 8)) ('emit', 'Reg', (42, 46)) ('177Lu', 'Var', (63, 68)) ('emits gamma rays', 'MPA', (81, 97)) 116154 33462603 Patients receiving 177Lu-DOTATATE as first-line therapy had better overall survival than those treated because of progressive disease. ('better', 'PosReg', (60, 66)) ('177Lu-DOTATATE', 'Var', (19, 33)) ('overall survival', 'MPA', (67, 83)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (19, 33)) ('Patients', 'Species', '9606', (0, 8)) 116156 33462603 There was no difference in response between those treated with 177Lu-DOTATATE or 90Y-DOTATOC. ('177Lu-DOTATATE', 'Var', (63, 77)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (63, 77)) ('90Y-DOTATOC', 'Chemical', 'MESH:C496730', (81, 92)) ('90Y-DOTATOC', 'Var', (81, 92)) 116158 33462603 In a recent report, 22 patients with progressive and/or metastatic PPGLs received a total of 30 treatments with either 131I-MIBG (n = 16), 177Lu-DOTATATE (n = 2), or 90Y-DOTATATE (n = 12). ('90Y-DOTATATE', 'Var', (166, 178)) ('177Lu-DOTATATE', 'Var', (139, 153)) ('patients', 'Species', '9606', (23, 31)) ('177Lu-DOTATATE', 'Chemical', 'MESH:C447941', (139, 153)) ('PPGLs', 'Chemical', '-', (67, 72)) ('131I-MIBG', 'Var', (119, 128)) ('-MIBG', 'Chemical', 'MESH:D019797', (123, 128)) ('90Y-DOTATATE', 'Chemical', 'MESH:C539274', (166, 178)) ('PPGLs', 'Disease', (67, 72)) 116258 33401758 Mutation of the Cell Cycle Regulator p27kip1 Drives Pseudohypoxic Pheochromocytoma Development Pheochromocytomas and paragangliomas (PPGLs) can be subdivided into at least three different subgroups associated with different clinical manifestations and depending on the risk to metastasize. ('Pseudohypoxic Pheochromocytoma', 'Disease', (52, 82)) ('PPGLs', 'Chemical', '-', (133, 138)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (66, 82)) ('PGLs', 'Phenotype', 'HP:0002668', (134, 138)) ('p27kip1', 'Gene', (37, 44)) ('Mutation', 'Var', (0, 8)) ('p27kip1', 'Gene', '83571', (37, 44)) ('paragangliomas', 'Phenotype', 'HP:0002668', (117, 131)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (95, 112)) ('paraganglioma', 'Phenotype', 'HP:0002668', (117, 130)) ('Pseudohypoxic Pheochromocytoma', 'Disease', 'MESH:D010673', (52, 82)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (95, 111)) ('Pheochromocytomas and paragangliomas', 'Disease', 'MESH:D010673', (95, 131)) 116266 33401758 Here, we describe that the rat MENX line, carrying a Cdkn1b (p27) frameshift-mutation, spontaneously develops pseudohypoxic pheochromocytoma (p-PCC). ('pseudohypoxic pheochromocytoma', 'Disease', (110, 140)) ('PCC', 'Gene', '1421', (144, 147)) ('frameshift-mutation', 'Var', (66, 85)) ('PCC', 'Gene', (144, 147)) ('Cdkn1b', 'Gene', (53, 59)) ('pseudohypoxic pheochromocytoma', 'Disease', 'MESH:D010673', (110, 140)) ('rat', 'Species', '10116', (27, 30)) ('develops', 'Reg', (101, 109)) ('Cdkn1b', 'Gene', '83571', (53, 59)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (124, 140)) 116285 33401758 PPGLs with mutations in NF1, HRAS, RET, MAX, KIF1B, and TMEM127 activate MAPK/ERK or PI3K/AKT/mTOR signaling pathways, and belong to the kinase signaling cluster. ('NF1', 'Gene', '24592', (24, 27)) ('mTOR', 'Gene', '56718', (94, 98)) ('mutations', 'Var', (11, 20)) ('RET', 'Gene', '24716', (35, 38)) ('RET', 'Gene', (35, 38)) ('ERK', 'Gene', '24338', (78, 81)) ('HRAS', 'Gene', (29, 33)) ('NF1', 'Gene', (24, 27)) ('TMEM127', 'Gene', (56, 63)) ('MAX', 'Gene', '60661', (40, 43)) ('PPGLs', 'Chemical', '-', (0, 5)) ('AKT', 'Gene', '24185', (90, 93)) ('MAX', 'Gene', (40, 43)) ('HRAS', 'Gene', '293621', (29, 33)) ('AKT', 'Gene', (90, 93)) ('KIF1B', 'Gene', '117548', (45, 50)) ('TMEM127', 'Gene', '311405', (56, 63)) ('activate', 'PosReg', (64, 72)) ('mTOR', 'Gene', (94, 98)) ('KIF1B', 'Gene', (45, 50)) ('ERK', 'Gene', (78, 81)) ('PGLs', 'Phenotype', 'HP:0002668', (1, 5)) 116286 33401758 Mutations in CSDE1 and MAML3, define the Wnt-activated cluster. ('MAML3', 'Gene', (23, 28)) ('CSDE1', 'Gene', '117180', (13, 18)) ('Mutations', 'Var', (0, 9)) ('CSDE1', 'Gene', (13, 18)) ('MAML3', 'Gene', '310405', (23, 28)) 116287 33401758 The pseudohypoxic cluster is characterized by mutations in succinate dehydrogenase subunits (SDHA, SDHB, SHDC, and SDHD; in short SDHx), fumarate hydratase (FH), hypoxia-inducible factor 2alpha (HIF2alpha/EPAS1), prolyl hydroxylase 1/2 (PHD1/2) or in von Hippel-Lindau tumor suppressor (VHL). ('EPAS1', 'Gene', (205, 210)) ('SDH', 'Gene', (99, 102)) ('SDHD', 'Gene', (115, 119)) ('fumarate hydratase', 'Gene', '24368', (137, 155)) ('SDHB', 'Gene', '298596', (99, 103)) ('PHD1/2', 'Gene', '308457;308913', (237, 243)) ('SDH', 'Gene', '25044', (93, 96)) ('SDHD', 'Gene', '363061', (115, 119)) ('SDH', 'Gene', (115, 118)) ('SDH', 'Gene', '25044', (99, 102)) ('FH', 'Gene', '24368', (157, 159)) ('mutations', 'Var', (46, 55)) ('von Hippel-Lindau tumor suppressor', 'Gene', '24874', (251, 285)) ('SDH', 'Gene', (130, 133)) ('SHDC', 'Gene', (105, 109)) ('tumor', 'Phenotype', 'HP:0002664', (269, 274)) ('SDHA', 'Gene', '157074', (93, 97)) ('SDH', 'Gene', '25044', (115, 118)) ('von Hippel-Lindau tumor suppressor', 'Gene', (251, 285)) ('VHL', 'Gene', '24874', (287, 290)) ('hypoxia-inducible factor 2alpha', 'Gene', (162, 193)) ('SDH', 'Gene', '25044', (130, 133)) ('EPAS1', 'Gene', '29452', (205, 210)) ('fumarate hydratase', 'Gene', (137, 155)) ('SDHA', 'Gene', (93, 97)) ('succinate', 'Chemical', 'MESH:D019802', (59, 68)) ('hypoxia-inducible factor 2alpha', 'Gene', '29452', (162, 193)) ('VHL', 'Gene', (287, 290)) ('SDHB', 'Gene', (99, 103)) ('SDH', 'Gene', (93, 96)) ('PHD1/2', 'Gene', (237, 243)) 116288 33401758 These mutations ultimately lead to the stabilization of HIF proteins in an oxygen level-independent manner. ('oxygen', 'Chemical', 'MESH:D010100', (75, 81)) ('HIF proteins', 'Disease', 'MESH:D018455', (56, 68)) ('stabilization', 'MPA', (39, 52)) ('HIF proteins', 'Disease', (56, 68)) ('lead to', 'Reg', (27, 34)) ('mutations', 'Var', (6, 15)) 116293 33401758 Very recently, a rat model with the heterozygous deletion of Sdhb was published, where, upon post-natal gamma irradiation, macroscopic PCCs developed in 3 out of 16 animals. ('Sdhb', 'Gene', (61, 65)) ('PCC', 'Gene', '1421', (135, 138)) ('deletion', 'Var', (49, 57)) ('rat', 'Species', '10116', (17, 20)) ('PCCs', 'Phenotype', 'HP:0002666', (135, 139)) ('PCC', 'Gene', (135, 138)) 116295 33401758 MENX-affected rats carry an endogenous frameshift mutation in Cdkn1b, encoding a highly unstable variant of the cell cycle regulator p27kip1 (p27). ('Cdkn1b', 'Gene', (62, 68)) ('Cdkn1b', 'Gene', '83571', (62, 68)) ('rats', 'Species', '10116', (14, 18)) ('p27kip1', 'Gene', '83571', (133, 140)) ('p27kip1', 'Gene', (133, 140)) ('frameshift mutation', 'Var', (39, 58)) 116304 33401758 We found a highly significant increase in EPI (8.7-fold, p < 0.0001), NE (7.5-fold, p < 0.0001) and DA (4.0-fold, p < 0.0001) in tissues of 4-5-month-old MENX mutant rats (HYP) vs. age-matched WT rats (Figure 1A). ('rats', 'Species', '10116', (196, 200)) ('EPI', 'Chemical', 'MESH:D004837', (42, 45)) ('mutant', 'Var', (159, 165)) ('DA', 'Chemical', 'MESH:D004298', (100, 102)) ('MENX', 'Gene', (154, 158)) ('increase', 'PosReg', (30, 38)) ('rats', 'Species', '10116', (166, 170)) ('EPI', 'MPA', (42, 45)) 116321 33401758 Half of the 25 patient samples that clustered closest to the rat samples carried an SDHB mutation. ('patient', 'Species', '9606', (15, 22)) ('carried', 'Reg', (73, 80)) ('mutation', 'Var', (89, 97)) ('rat', 'Species', '10116', (61, 64)) ('SDHB', 'Gene', (84, 88)) ('SDHB', 'Gene', '298596', (84, 88)) 116350 33401758 A similar hypermethylator phenotype has been previously reported for p-PPGL, and especially for SDHx-mutated tumors. ('p-PPGL', 'Chemical', '-', (69, 75)) ('tumors', 'Disease', 'MESH:D009369', (109, 115)) ('tumors', 'Phenotype', 'HP:0002664', (109, 115)) ('SDH', 'Gene', (96, 99)) ('SDH', 'Gene', '25044', (96, 99)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('p-PPGL', 'Var', (69, 75)) ('tumors', 'Disease', (109, 115)) 116351 33401758 In p-PPGLs, the stabilization of the HIF2alpha transcription factor promotes the transcription of genes involved in angiogenesis, including Vegfa, the major pro-angiogenic factor, and Angiopoietin-2 (Angpt2), a cytokine involved in vascular remodeling. ('Angpt2', 'Gene', (200, 206)) ('p-PPGLs', 'Var', (3, 10)) ('Angiopoietin-2', 'Gene', (184, 198)) ('promotes', 'PosReg', (68, 76)) ('stabilization', 'MPA', (16, 29)) ('Vegfa', 'Gene', (140, 145)) ('Angpt2', 'Gene', '89805', (200, 206)) ('Vegfa', 'Gene', '83785', (140, 145)) ('HIF2alpha', 'Gene', (37, 46)) ('Angiopoietin-2', 'Gene', '89805', (184, 198)) ('PGLs', 'Phenotype', 'HP:0002668', (6, 10)) ('p-PPGLs', 'Chemical', '-', (3, 10)) ('transcription', 'MPA', (81, 94)) 116392 33401758 In humans, germline p27 mutations cause the MEN4 syndrome, where the involvement of adrenal glands is rare. ('MEN4', 'Gene', '1027', (44, 48)) ('MEN4', 'Gene', (44, 48)) ('p27', 'Gene', (20, 23)) ('cause', 'Reg', (34, 39)) ('humans', 'Species', '9606', (3, 9)) ('mutations', 'Var', (24, 33)) 116400 33401758 Accordingly, catecholamine metabolomics of individual rat adrenal glands with advanced PCCs identified the typical pseudohypoxic profile: NE high, DA high, EPI low, which are very important classification criteria for human p-PPGL. ('pseudohypoxic profile', 'MPA', (115, 136)) ('catecholamine', 'Chemical', 'MESH:D002395', (13, 26)) ('PCC', 'Gene', '1421', (87, 90)) ('rat', 'Species', '10116', (54, 57)) ('DA', 'Chemical', 'MESH:D004298', (147, 149)) ('EPI low', 'Var', (156, 163)) ('EPI', 'Chemical', 'MESH:D004837', (156, 159)) ('PCC', 'Gene', (87, 90)) ('human', 'Species', '9606', (218, 223)) ('PCCs', 'Phenotype', 'HP:0002666', (87, 91)) ('p-PPGL', 'Chemical', '-', (224, 230)) ('DA high', 'MPA', (147, 154)) 116404 33401758 Interestingly, by ultrastructural analysis, the adrenomedullary cells of mutant rats showed morphologically altered mitochondria already at the age of 1 month, before the onset of histo-pathological changes. ('rats', 'Species', '10116', (80, 84)) ('mitochondria', 'MPA', (116, 128)) ('altered', 'Reg', (108, 115)) ('mutant', 'Var', (73, 79)) 116405 33401758 Mitochondrial abnormalities in mutant rats worsened with age, and in the tumor cells of 7-month-old MENX rats, mitochondria showed balloon-like enlargements and incomplete cristae. ('Mitochondrial abnormalities', 'Disease', 'MESH:D028361', (0, 27)) ('mutant', 'Var', (31, 37)) ('balloon', 'Disease', (131, 138)) ('tumor', 'Disease', 'MESH:D009369', (73, 78)) ('rats', 'Species', '10116', (105, 109)) ('rats', 'Species', '10116', (38, 42)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('tumor', 'Disease', (73, 78)) ('Mitochondrial abnormalities', 'Disease', (0, 27)) ('Mitochondrial abnormalities', 'Phenotype', 'HP:0012103', (0, 27)) ('balloon', 'Disease', 'MESH:D054549', (131, 138)) ('mitochondria', 'MPA', (111, 123)) 116407 33401758 Additional analyses, e.g., whole genome sequencing or metabolic flux analyses, are required to determine whether somatic mutations and/or deteriorating mitochondrial function lead to the accumulation of oncometabolites (fumarate, 2-HG) in rat PCCs. ('PCCs', 'Phenotype', 'HP:0002666', (243, 247)) ('PCC', 'Gene', (243, 246)) ('mutations', 'Var', (121, 130)) ('2-HG', 'Chemical', 'MESH:C019417', (230, 234)) ('deteriorating', 'NegReg', (138, 151)) ('fumarate', 'Chemical', 'MESH:D005650', (220, 228)) ('rat', 'Species', '10116', (145, 148)) ('rat', 'Species', '10116', (239, 242)) ('accumulation', 'PosReg', (187, 199)) ('PCC', 'Gene', '1421', (243, 246)) ('rat', 'Species', '10116', (224, 227)) ('mitochondrial function', 'MPA', (152, 174)) 116409 33401758 These epigenetic alterations interfere with transcriptional regulation by modulating chromatin accessibility. ('chromatin accessibility', 'MPA', (85, 108)) ('interfere', 'NegReg', (29, 38)) ('transcriptional regulation', 'MPA', (44, 70)) ('rat', 'Species', '10116', (21, 24)) ('epigenetic alterations', 'Var', (6, 28)) ('modulating', 'Reg', (74, 84)) 116411 33401758 This links the mitochondrial defects of p-PPGLs bearing mutations in the TCA-cycle with epigenetic modification, and ultimately with gene regulation. ('mutations', 'Var', (56, 65)) ('mitochondrial defects', 'MPA', (15, 36)) ('PGLs', 'Phenotype', 'HP:0002668', (43, 47)) ('p-PPGLs', 'Gene', (40, 47)) ('p-PPGLs', 'Chemical', '-', (40, 47)) ('epigenetic modification', 'MPA', (88, 111)) ('TCA', 'Chemical', 'MESH:D014238', (73, 76)) ('TCA-cycle', 'Gene', (73, 82)) 116414 33401758 It remains to be determined whether the loss of 5-hmC is also associated with aggressive behavior and a worse patient outcome in human PPGL, as found in other hypoxic and pseudohypoxic cancers such as clear cell renal cell carcinoma (ccRCC) and melanoma. ('5-hmC', 'Protein', (48, 53)) ('clear cell renal cell carcinoma', 'Disease', (201, 232)) ('aggressive behavior', 'Phenotype', 'HP:0000718', (78, 97)) ('cancers', 'Phenotype', 'HP:0002664', (185, 192)) ('carcinoma', 'Phenotype', 'HP:0030731', (223, 232)) ('cancer', 'Phenotype', 'HP:0002664', (185, 191)) ('associated', 'Reg', (62, 72)) ('melanoma', 'Phenotype', 'HP:0002861', (245, 253)) ('melanoma', 'Disease', (245, 253)) ('clear cell renal cell carcinoma', 'Phenotype', 'HP:0006770', (201, 232)) ('patient', 'Species', '9606', (110, 117)) ('PPGL', 'Gene', (135, 139)) ('hypoxic and pseudohypoxic cancers', 'Disease', 'MESH:D009369', (159, 192)) ('clear cell renal cell carcinoma', 'Disease', 'MESH:C538614', (201, 232)) ('aggressive behavior', 'Disease', (78, 97)) ('melanoma', 'Disease', 'MESH:D008545', (245, 253)) ('aggressive behavior', 'Disease', 'MESH:D001523', (78, 97)) ('ccRCC', 'Phenotype', 'HP:0006770', (234, 239)) ('loss', 'Var', (40, 44)) ('5-hmC', 'Chemical', '-', (48, 53)) ('human', 'Species', '9606', (129, 134)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (212, 232)) 116415 33401758 In this respect, it is worth to note that in the imCC cell line, a spontaneously immortalized mouse chromaffin cell line with full Sdhb knockout, the hypermethylation phenotype could be induced by TET silencing. ('TET', 'Chemical', '-', (197, 200)) ('chromaffin', 'Chemical', '-', (100, 110)) ('mouse', 'Species', '10090', (94, 99)) ('knockout', 'Var', (136, 144)) ('hypermethylation phenotype', 'MPA', (150, 176)) ('Sdhb', 'Gene', (131, 135)) 116420 33401758 Such a mechanism has been reported in human P-PPGLs: the PNMT promoter was found to be the target of TET-mediated hypermethylation and resulting in decreased gene expression. ('P-PPGLs', 'Chemical', '-', (44, 51)) ('human', 'Species', '9606', (38, 43)) ('gene expression', 'MPA', (158, 173)) ('hypermethylation', 'Var', (114, 130)) ('PGLs', 'Phenotype', 'HP:0002668', (47, 51)) ('decreased', 'NegReg', (148, 157)) ('TET-mediated', 'Var', (101, 113)) ('TET', 'Chemical', '-', (101, 104)) 116421 33401758 Interestingly, it has been shown that rats treated with vitamin D3 developed adrenomedullary hyperplasia and PCCs, which were mainly PNMT-negative, thereby suggesting that norepinephrine cells are more sensitive to mitotic stimuli. ('PCCs', 'Phenotype', 'HP:0002666', (109, 113)) ('hyperplasia', 'Disease', (93, 104)) ('vitamin D3', 'Var', (56, 66)) ('PCC', 'Gene', (109, 112)) ('rats', 'Species', '10116', (38, 42)) ('norepinephrine', 'Chemical', 'MESH:D009638', (172, 186)) ('hyperplasia', 'Disease', 'MESH:D006965', (93, 104)) ('vitamin D3', 'Chemical', 'MESH:D002762', (56, 66)) ('PCC', 'Gene', '1421', (109, 112)) 116437 33401758 Our findings that the mutation of p27 predisposes to PCCs having an alteration in the energy metabolism can be interpreted in the context of a signaling mechanism that connects cell cycle checkpoints to mitochondrial function. ('rat', 'Species', '10116', (72, 75)) ('mutation', 'Var', (22, 30)) ('PCCs', 'Phenotype', 'HP:0002666', (53, 57)) ('PCC', 'Gene', (53, 56)) ('p27', 'Gene', (34, 37)) ('predisposes', 'Reg', (38, 49)) ('PCC', 'Gene', '1421', (53, 56)) ('energy metabolism', 'MPA', (86, 103)) ('alteration', 'Reg', (68, 78)) 116438 33401758 The dysregulation of mitochondrial function in human p-PPGLs is associated with severe oxidative stress due to increased reactive oxygen species (ROS) production. ('dysregulation of mitochondrial function', 'Phenotype', 'HP:0003287', (4, 43)) ('increased', 'PosReg', (111, 120)) ('dysregulation', 'Var', (4, 17)) ('p-PPGLs', 'Chemical', '-', (53, 60)) ('reactive oxygen species', 'MPA', (121, 144)) ('mitochondrial function', 'MPA', (21, 43)) ('oxidative stress', 'Phenotype', 'HP:0025464', (87, 103)) ('ROS', 'Chemical', 'MESH:D017382', (146, 149)) ('PGLs', 'Phenotype', 'HP:0002668', (56, 60)) ('increased reactive oxygen species', 'Phenotype', 'HP:0025464', (111, 144)) ('human', 'Species', '9606', (47, 52)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (121, 144)) 116443 33401758 In this case, the lack of the functional p27 would not need to induce novel oxygen-responsive pathways in these cells but rather stimulate the already existing ones. ('stimulate', 'PosReg', (129, 138)) ('p27', 'Gene', (41, 44)) ('oxygen', 'Chemical', 'MESH:D010100', (76, 82)) ('lack', 'Var', (18, 22)) ('rat', 'Species', '10116', (122, 125)) ('oxygen-responsive pathways', 'Pathway', (76, 102)) 116444 33401758 After various unsuccessful attempts at generating engineered mouse models of pseudohypoxic tumors, recently, a rat line with a heterozygous Sdhb deletion was established by TALEN-genetic engineering. ('pseudohypoxic tumors', 'Disease', 'MESH:D009369', (77, 97)) ('tumors', 'Phenotype', 'HP:0002664', (91, 97)) ('rat', 'Species', '10116', (111, 114)) ('Sdhb', 'Gene', (140, 144)) ('pseudohypoxic tumors', 'Disease', (77, 97)) ('rat', 'Species', '10116', (43, 46)) ('tumor', 'Phenotype', 'HP:0002664', (91, 96)) ('mouse', 'Species', '10090', (61, 66)) ('deletion', 'Var', (145, 153)) 116445 33401758 As in mice, the homozyogous deletion of Sdhb in rats led to embryonic lethality, but unlike the mice, Sdhb+/- rats developed PCCs, albeit at low frequency. ('embryonic lethality', 'Disease', 'MESH:D020964', (60, 79)) ('embryonic lethality', 'Disease', (60, 79)) ('mice', 'Species', '10090', (96, 100)) ('mice', 'Species', '10090', (6, 10)) ('PCC', 'Gene', '1421', (125, 128)) ('rats', 'Species', '10116', (48, 52)) ('rats', 'Species', '10116', (110, 114)) ('PCCs', 'Phenotype', 'HP:0002666', (125, 129)) ('deletion', 'Var', (28, 36)) ('Sdhb', 'Gene', (40, 44)) ('PCC', 'Gene', (125, 128)) 116447 33401758 Unfortunately, the low incidence/lack of tumors in nearly all previous mouse/rat models of p-PPGLs hampers their usage for preclinical therapy studies. ('tumor', 'Phenotype', 'HP:0002664', (41, 46)) ('tumors', 'Phenotype', 'HP:0002664', (41, 47)) ('rat', 'Species', '10116', (77, 80)) ('p-PPGLs', 'Chemical', '-', (91, 98)) ('tumors', 'Disease', (41, 47)) ('tumors', 'Disease', 'MESH:D009369', (41, 47)) ('p-PPGLs', 'Var', (91, 98)) ('mouse', 'Species', '10090', (71, 76)) ('PGLs', 'Phenotype', 'HP:0002668', (94, 98)) 116449 33401758 Indeed, although these rats are not a model of SDHx driver mutations, they are highly valuable given the extensive phenotypic overlap with pseudoxypoxic tumors. ('SDH', 'Gene', '25044', (47, 50)) ('rats', 'Species', '10116', (23, 27)) ('SDH', 'Gene', (47, 50)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('tumors', 'Phenotype', 'HP:0002664', (153, 159)) ('mutations', 'Var', (59, 68)) ('pseudoxypoxic tumors', 'Disease', (139, 159)) ('pseudoxypoxic tumors', 'Disease', 'MESH:D009369', (139, 159)) 116458 33401758 MENX rats originate from a spontaneous mutation in the Cdkn1b gene encoding for p27Kip1 in a colony of Sprague Dawley rats, leading to the development of multiple endocrine tumors, including bilateral pheochromocytoma, extra-adrenal paraganglioma, pituitary neuroendocrine tumor (piNET), thyroid C-cell hyperplasia, parathyroid hyperplasia, and pancreatic islet cells hyperplasia. ('multiple endocrine tumors', 'Disease', 'MESH:D009377', (154, 179)) ('Cdkn1b', 'Gene', (55, 61)) ('tumors', 'Phenotype', 'HP:0002664', (173, 179)) ('thyroid C-cell hyperplasia, parathyroid hyperplasia', 'Disease', 'MESH:D006965', (288, 339)) ('pancreatic islet cells hyperplasia', 'Phenotype', 'HP:0004510', (345, 379)) ('parathyroid hyperplasia', 'Phenotype', 'HP:0008208', (316, 339)) ('p27Kip1', 'Gene', (80, 87)) ('pancreatic islet cells hyperplasia', 'Disease', 'MESH:C535838', (345, 379)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (201, 217)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (258, 278)) ('tumor', 'Phenotype', 'HP:0002664', (173, 178)) ('multiple endocrine tumors', 'Disease', (154, 179)) ('pheochromocytoma', 'Disease', (201, 217)) ('adrenal paraganglioma, pituitary neuroendocrine tumor', 'Disease', 'MESH:D018358', (225, 278)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (201, 217)) ('Cdkn1b', 'Gene', '83571', (55, 61)) ('tumor', 'Phenotype', 'HP:0002664', (273, 278)) ('pancreatic islet cells hyperplasia', 'Disease', (345, 379)) ('leading to', 'Reg', (124, 134)) ('mutation', 'Var', (39, 47)) ('paraganglioma', 'Phenotype', 'HP:0002668', (233, 246)) ('p27Kip1', 'Gene', '83571', (80, 87)) ('Sprague Dawley rats', 'Species', '10116', (103, 122)) ('rats', 'Species', '10116', (5, 9)) ('rats', 'Species', '10116', (118, 122)) 116484 33401758 Snap-frozen macrodissected medullary chromaffin tissue from age-matched (4-5 months or 7-9 month) male mutant or WT MENX rats were lysed by adding 100 microL cell disruption puffer (Ambion PARISTM Kit, Thermo Fisher), 15 min of incubation at 4 C and homogenization using a tissue grinder (NIPPON Genetics Europe, Duren, Germany) followed by another 15 min incubation on ice. ('Kit', 'Gene', '64030', (197, 200)) ('mutant', 'Var', (103, 109)) ('Kit', 'Gene', (197, 200)) ('macrodissected medullary', 'Phenotype', 'HP:0008659', (12, 36)) ('rats', 'Species', '10116', (121, 125)) ('chromaffin', 'Chemical', '-', (37, 47)) 116488 33401758 RNA from macrodissected medullary chromaffin tissue of MENX WT and mutants (age, as indicated in the respective experiment) was extracted by the Maxwell extraction system using the simplyRNA kit (Promega). ('chromaffin', 'Chemical', '-', (34, 44)) ('kit', 'Gene', '64030', (191, 194)) ('macrodissected medullary', 'Phenotype', 'HP:0008659', (9, 33)) ('kit', 'Gene', (191, 194)) ('mutants', 'Var', (67, 74)) 116515 33401758 "The Adrenal: Central Relay in Health and Disease" and by the DFG within the CRC 824 "Imaging for Selection, Monitoring and Individualization of Cancer Therapies", Project B8 (H.M), A1/Z3 (J.M.-N. and V.N.) ('Cancer', 'Disease', 'MESH:D009369', (145, 151)) ('A1/Z3', 'Var', (182, 187)) ('Cancer', 'Phenotype', 'HP:0002664', (145, 151)) ('Cancer', 'Disease', (145, 151)) 116591 33360629 Subtotal resection often leads to recurrence, and postoperative radiation therapy for patients with incomplete resection has no effect on prevention of recurrences. ('Subtotal', 'Var', (0, 8)) ('leads to', 'Reg', (25, 33)) ('recurrence', 'MPA', (34, 44)) ('patients', 'Species', '9606', (86, 94)) 116625 31714582 Phenoxybenzamine was more effective in preventing intraoperative hemodynamic instability, but it could not be established whether this was associated with a better clinical outcome. ('intraoperative hemodynamic instability', 'MPA', (50, 88)) ('Phenoxybenzamine', 'Chemical', 'MESH:D010643', (0, 16)) ('Phenoxybenzamine', 'Var', (0, 16)) 116628 31714582 Resection of a PPGL is associated with a high risk of hemodynamic instability and subsequent cardiovascular complications due to uncontrolled release of catecholamines in response to various anesthesiologic and surgical stimuli. ('catecholamines', 'Chemical', 'MESH:D002395', (153, 167)) ('hemodynamic instability', 'MPA', (54, 77)) ('PPGL', 'Chemical', '-', (15, 19)) ('Resection', 'Var', (0, 9)) ('PPGL', 'Gene', (15, 19)) ('cardiovascular complications', 'Phenotype', 'HP:0001626', (93, 121)) ('cardiovascular complications', 'Disease', 'MESH:D002318', (93, 121)) ('cardiovascular complications', 'Disease', (93, 121)) ('uncontrolled release of catecholamines', 'MPA', (129, 167)) ('cardiovascular complication', 'Phenotype', 'HP:0001626', (93, 120)) 116654 31714582 The sample size was calculated at a total of 134 subjects to demonstrate a relative reduction of 20% in intraoperative time outside the predefined blood pressure targets, assuming a frequency of 8 +- 4%, between patients pretreated with phenoxybenzamine or doxazosin with a power of at least 80% and a 2-sided alpha of .05. ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (237, 253)) ('reduction', 'NegReg', (84, 93)) ('doxazosin', 'Chemical', 'MESH:D017292', (257, 266)) ('patients', 'Species', '9606', (212, 220)) ('phenoxybenzamine', 'Var', (237, 253)) 116667 31714582 A higher proportion of patients in the phenoxybenzamine group received metoprolol (89.4% vs. 66.2%, P < .01), which was also prescribed at higher dosages. ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (39, 55)) ('patients', 'Species', '9606', (23, 31)) ('phenoxybenzamine', 'Var', (39, 55)) ('metoprolol', 'Chemical', 'MESH:D008790', (71, 81)) ('metoprolol', 'Gene', (71, 81)) 116669 31714582 The median total HI-score was lower in the phenoxybenzamine group compared to the doxazosin group (38.0 [28.8-58.0] vs. 50.0 [35.3-63.8], P = .02, r = 0.20). ('lower', 'NegReg', (30, 35)) ('phenoxybenzamine', 'Var', (43, 59)) ('doxazosin', 'Chemical', 'MESH:D017292', (82, 91)) ('HI-score', 'MPA', (17, 25)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (43, 59)) 116670 31714582 Peak systolic blood pressure, cumulative time and frequency of systolic blood pressure >160 mmHg, and the amount of vasodilating drugs were all lower in the phenoxybenzamine group (Table 2). ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (157, 173)) ('amount of vasodilating drugs', 'MPA', (106, 134)) ('lower', 'NegReg', (144, 149)) ('Peak systolic blood pressure', 'MPA', (0, 28)) ('phenoxybenzamine', 'Var', (157, 173)) 116671 31714582 There were no differences between phenoxybenzamine and doxazosin with respect to the occurrence of postoperative hypotension defined as a mean arterial blood pressure < 60 mmHg or the use of vasoconstrictive/inotropic drugs (40.0% vs. 38.8%, P > .99), the proportion of patients requiring vasopressors (33.3% and 32.4%, P > .99), or the duration of vasopressor treatment (402 [161-1185] vs. 490 [163-1167] min, P = .98). ('postoperative hypotension', 'Disease', (99, 124)) ('patients', 'Species', '9606', (270, 278)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (34, 50)) ('doxazosin', 'Chemical', 'MESH:D017292', (55, 64)) ('phenoxybenzamine', 'Var', (34, 50)) ('hypotension', 'Phenotype', 'HP:0002615', (113, 124)) ('postoperative hypotension', 'Disease', 'MESH:D007022', (99, 124)) 116673 31714582 In each treatment group, there were 6 cardiovascular complications, occurring in 6 patients of the phenoxybenzamine group and 5 patients of the doxazosin group (8.8% vs 6.9%, P = 0.68). ('cardiovascular complications', 'Disease', 'MESH:D002318', (38, 66)) ('doxazosin', 'Chemical', 'MESH:D017292', (144, 153)) ('cardiovascular complications', 'Disease', (38, 66)) ('cardiovascular complications', 'Phenotype', 'HP:0001626', (38, 66)) ('phenoxybenzamine', 'Var', (99, 115)) ('cardiovascular complication', 'Phenotype', 'HP:0001626', (38, 65)) ('patients', 'Species', '9606', (83, 91)) ('patients', 'Species', '9606', (128, 136)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (99, 115)) 116684 31714582 Phenoxybenzamine was, however, more effective in preventing intraoperative systolic blood pressure above the target range and hemodynamic instability. ('Phenoxybenzamine', 'Chemical', 'MESH:D010643', (0, 16)) ('preventing', 'PosReg', (49, 59)) ('intraoperative', 'MPA', (60, 74)) ('Phenoxybenzamine', 'Var', (0, 16)) 116687 31714582 In particular, patients in the phenoxybenzamine group demonstrated a shorter duration of systolic blood pressure above 160 mmHg, a lower peak systolic blood pressure, and a concomitant lower requirement of vasodilating drugs. ('systolic blood pressure', 'MPA', (89, 112)) ('patients', 'Species', '9606', (15, 23)) ('lower', 'NegReg', (185, 190)) ('lower peak systolic', 'Phenotype', 'HP:0500105', (131, 150)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (31, 47)) ('peak systolic blood pressure', 'MPA', (137, 165)) ('shorter', 'NegReg', (69, 76)) ('phenoxybenzamine', 'Var', (31, 47)) ('lower', 'NegReg', (131, 136)) 116688 31714582 This might suggest that phenoxybenzamine offers a more effective inhibition of the alpha-adrenergic receptor than doxazosin, which could be explained by its noncompetitive antagonism compared to the competitive binding provided by doxazosin. ('inhibition', 'NegReg', (65, 75)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (24, 40)) ('doxazosin', 'Chemical', 'MESH:D017292', (231, 240)) ('doxazosin', 'Chemical', 'MESH:D017292', (114, 123)) ('alpha-adrenergic receptor', 'Protein', (83, 108)) ('phenoxybenzamine', 'Var', (24, 40)) 116691 31714582 The higher rate of co-administration of beta-adrenergic receptor blockers among patients allocated to phenoxybenzamine can be explained by the occurrence of reflex tachycardia as a result of inhibition of the presynaptic alpha 2-adrenergic receptor. ('reflex tachycardia', 'Disease', (157, 175)) ('tachycardia', 'Phenotype', 'HP:0001649', (164, 175)) ('patients', 'Species', '9606', (80, 88)) ('reflex tachycardia', 'Disease', 'MESH:D013610', (157, 175)) ('inhibition', 'NegReg', (191, 201)) ('phenoxybenzamine', 'Var', (102, 118)) ('presynaptic', 'Protein', (209, 220)) ('phenoxybenzamine', 'Chemical', 'MESH:D010643', (102, 118)) 116703 31714582 Phenoxybenzamine was more effective in preventing intraoperative hemodynamic instability, but it could not be established whether its use was associated with a better clinical outcome. ('Phenoxybenzamine', 'Chemical', 'MESH:D010643', (0, 16)) ('preventing intraoperative hemodynamic instability', 'MPA', (39, 88)) ('Phenoxybenzamine', 'Var', (0, 16)) 116704 31687641 A Family With a Carotid Body Paraganglioma and Thyroid Neoplasias With a New SDHAF2 Germline Variant At least 30% of all pheochromocytomas (PCCs)/paragangliomas (PGLs) arise in patients with a germline predisposition syndrome. ('PCCs', 'Disease', (140, 144)) ('Carotid Body Paraganglioma', 'Disease', 'MESH:D002345', (16, 42)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (121, 138)) ('Neoplasias', 'Phenotype', 'HP:0002664', (55, 65)) ('Variant', 'Var', (93, 100)) ('Thyroid Neoplasias', 'Phenotype', 'HP:0100031', (47, 65)) ('paragangliomas', 'Disease', (146, 160)) ('PCCs', 'Disease', 'MESH:D010673', (140, 144)) ('Carotid Body Paraganglioma', 'Phenotype', 'HP:0100635', (16, 42)) ('paraganglioma', 'Phenotype', 'HP:0002668', (146, 159)) ('Thyroid Neoplasias', 'Disease', 'MESH:D013959', (47, 65)) ('SDHAF2', 'Gene', '54949', (77, 83)) ('PGLs', 'Phenotype', 'HP:0002668', (162, 166)) ('SDHAF2', 'Gene', (77, 83)) ('Thyroid Neoplasias', 'Disease', (47, 65)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (121, 137)) ('Carotid Body Paraganglioma', 'Disease', (16, 42)) ('patients', 'Species', '9606', (177, 185)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (121, 138)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (29, 42)) ('PCCs', 'Phenotype', 'HP:0002666', (140, 144)) ('pheochromocytomas', 'Disease', (121, 138)) ('paragangliomas', 'Disease', 'MESH:D010235', (146, 160)) ('paragangliomas', 'Phenotype', 'HP:0002668', (146, 160)) 116705 31687641 Variants in succinate dehydrogenase subunits A, B, C, and D (SDHA, SDHB, SDHC, and SDHD) are the most common pathogenic germline alterations. ('SDHA', 'Gene', (61, 65)) ('Variants', 'Var', (0, 8)) ('SDHB', 'Gene', '6390', (67, 71)) ('common pathogenic', 'Reg', (102, 119)) ('SDHC', 'Gene', (73, 77)) ('SDHB', 'Gene', (67, 71)) ('succinate', 'Chemical', 'MESH:D013386', (12, 21)) ('SDHC', 'Gene', '6391', (73, 77)) ('SDHA', 'Gene', '6389', (61, 65)) ('SDHD', 'Gene', '6392', (83, 87)) ('SDHD', 'Gene', (83, 87)) 116706 31687641 Few pathogenic variants have been reported in succinate dehydrogenase assembly factor 2 (SDHAF2). ('variants', 'Var', (15, 23)) ('SDHAF2', 'Gene', (89, 95)) ('succinate', 'Chemical', 'MESH:D013386', (46, 55)) ('SDHAF2', 'Gene', '54949', (89, 95)) 116708 31687641 Genetic testing revealed a likely pathogenic SDHAF2 variant (c.347G>A;p.W116X). ('c.347G>A', 'Mutation', 'c.347G>A', (61, 69)) ('SDHAF2', 'Gene', '54949', (45, 51)) ('c.347G>A;', 'Var', (61, 70)) ('SDHAF2', 'Gene', (45, 51)) ('pathogenic', 'Reg', (34, 44)) ('p.W116X', 'Mutation', 'p.W116X', (70, 77)) 116710 31687641 Because evidence for pathogenic variants in SDHAF2 causing predisposition to PCC/PGL is limited, we discuss the challenges in mutational variant interpretation and decision making regarding screening for associated tumors. ('tumors', 'Disease', 'MESH:D009369', (215, 221)) ('causing', 'Reg', (51, 58)) ('PCC', 'Disease', (77, 80)) ('PCC', 'Disease', 'MESH:D010673', (77, 80)) ('variants', 'Var', (32, 40)) ('tumors', 'Phenotype', 'HP:0002664', (215, 221)) ('SDHAF2', 'Gene', (44, 50)) ('tumors', 'Disease', (215, 221)) ('SDHAF2', 'Gene', '54949', (44, 50)) 116713 31687641 To date, there are >20 PCC/PGL potential susceptibility genes, with pathogenic variants in the succinate dehydrogenase (SDHx) subunits (SDHAF2, SDHA, SDHB, SDHC, SDHD) accounting for 30% to 54% of all cases. ('SDHD', 'Gene', (162, 166)) ('SDHB', 'Gene', '6390', (150, 154)) ('SDHC', 'Gene', (156, 160)) ('SDH', 'Gene', (162, 165)) ('SDH', 'Gene', '6390', (150, 153)) ('SDHAF2', 'Gene', (136, 142)) ('SDH', 'Gene', '6390', (136, 139)) ('SDHAF2', 'Gene', '54949', (136, 142)) ('SDHA', 'Gene', (136, 140)) ('SDH', 'Gene', '6390', (120, 123)) ('SDH', 'Gene', '6390', (144, 147)) ('SDHA', 'Gene', (144, 148)) ('PCC', 'Disease', 'MESH:D010673', (23, 26)) ('SDHA', 'Gene', '6389', (136, 140)) ('SDHB', 'Gene', (150, 154)) ('SDHA', 'Gene', '6389', (144, 148)) ('SDH', 'Gene', (150, 153)) ('SDH', 'Gene', (136, 139)) ('SDH', 'Gene', (120, 123)) ('SDH', 'Gene', '6390', (156, 159)) ('variants', 'Var', (79, 87)) ('PCC', 'Disease', (23, 26)) ('SDH', 'Gene', (144, 147)) ('SDHD', 'Gene', '6392', (162, 166)) ('SDHC', 'Gene', '6391', (156, 160)) ('SDH', 'Gene', '6390', (162, 165)) ('succinate', 'Chemical', 'MESH:D013386', (95, 104)) ('SDH', 'Gene', (156, 159)) 116714 31687641 A germline loss-of-function mutation in a highly conserved mitochondrial protein (SDH5) required for SDH-dependent respiration and SDH1 flavination resulted in hereditary PGLs in a previously reported Dutch family. ('PGLs', 'Disease', (171, 175)) ('SDH1', 'Gene', '6390', (131, 135)) ('SDH', 'Gene', (82, 85)) ('SDH5', 'Gene', (82, 86)) ('SDH', 'Gene', '6390', (131, 134)) ('PGLs', 'Phenotype', 'HP:0002668', (171, 175)) ('SDH', 'Gene', '6390', (101, 104)) ('mutation', 'Var', (28, 36)) ('loss-of-function', 'NegReg', (11, 27)) ('SDH5', 'Gene', '54949', (82, 86)) ('SDH', 'Gene', (101, 104)) ('SDH', 'Gene', '6390', (82, 85)) ('SDH1', 'Gene', (131, 135)) ('SDH', 'Gene', (131, 134)) 116717 31687641 Here, we present and describe an additional family with a likely pathogenic SDHAF2 variant resulting in an HNPGL. ('variant', 'Var', (83, 90)) ('pathogenic', 'Reg', (65, 75)) ('SDHAF2', 'Gene', '54949', (76, 82)) ('SDHAF2', 'Gene', (76, 82)) ('HNPGL', 'Disease', (107, 112)) ('resulting in', 'Reg', (91, 103)) 116722 31687641 Before surgical excision, the patient underwent genetic testing, which included sequencing and deletion/duplication analysis for 10 PCC/PGL susceptibility genes (MAX, NF1, RET, SDHA, SDHAF2, SDHB, SDHC, SDHD, TMEM127, and VHL) via the Ambry Genetics PGLNext panel. ('SDHB', 'Gene', (191, 195)) ('VHL', 'Gene', (222, 225)) ('SDHA', 'Gene', (183, 187)) ('NF1', 'Gene', (167, 170)) ('MAX', 'Gene', (162, 165)) ('SDHA', 'Gene', (177, 181)) ('SDHC', 'Gene', (197, 201)) ('SDHA', 'Gene', '6389', (183, 187)) ('deletion/duplication', 'Var', (95, 115)) ('SDHA', 'Gene', '6389', (177, 181)) ('SDHAF2', 'Gene', '54949', (183, 189)) ('VHL', 'Gene', '7428', (222, 225)) ('SDHAF2', 'Gene', (183, 189)) ('RET', 'Gene', '5979', (172, 175)) ('patient', 'Species', '9606', (30, 37)) ('PCC', 'Disease', 'MESH:D010673', (132, 135)) ('TMEM127', 'Gene', (209, 216)) ('SDHD', 'Gene', '6392', (203, 207)) ('SDHB', 'Gene', '6390', (191, 195)) ('SDHC', 'Gene', '6391', (197, 201)) ('PCC', 'Disease', (132, 135)) ('RET', 'Gene', (172, 175)) ('NF1', 'Gene', '4763', (167, 170)) ('TMEM127', 'Gene', '55654', (209, 216)) ('SDHD', 'Gene', (203, 207)) 116723 31687641 Results revealed a likely pathogenic variant in SDHAF2 (c.347G>A;p.W116X). ('SDHAF2', 'Gene', (48, 54)) ('SDHAF2', 'Gene', '54949', (48, 54)) ('c.347G>A', 'Mutation', 'c.347G>A', (56, 64)) ('pathogenic', 'Reg', (26, 36)) ('c.347G>A;', 'Var', (56, 65)) ('p.W116X', 'Mutation', 'p.W116X', (65, 72)) 116724 31687641 Confirmatory Sanger sequencing of the novel SDHAF2 variant was performed (Fig. ('SDHAF2', 'Gene', (44, 50)) ('SDHAF2', 'Gene', '54949', (44, 50)) ('variant', 'Var', (51, 58)) 116725 31687641 A 28-year-old (patient III.4) and 29-year-old (patient III.6) pair of female siblings to patient III.2 were found to carry the familial SDHAF2 variant identified in patient III.2. ('patient', 'Species', '9606', (15, 22)) ('patient', 'Species', '9606', (47, 54)) ('patient', 'Species', '9606', (89, 96)) ('patient', 'Species', '9606', (165, 172)) ('variant', 'Var', (143, 150)) ('SDHAF2', 'Gene', (136, 142)) ('SDHAF2', 'Gene', '54949', (136, 142)) 116736 31687641 The ClinVar database (accessed 1 September 2018) holds 101 SDHAF2 sequence variants, of which three have been categorized as pathogenic and four as likely pathogenic. ('SDHAF2', 'Gene', (59, 65)) ('variants', 'Var', (75, 83)) ('SDHAF2', 'Gene', '54949', (59, 65)) 116737 31687641 One of the pathogenic variants, c.232G>A, has been associated with SDHAF2-related disease in families of Dutch and Spanish origin, as well as in one Italian individual. ('c.232G>A', 'Mutation', 'c.232G>A', (32, 40)) ('associated', 'Reg', (51, 61)) ('c.232G>A', 'Var', (32, 40)) ('SDHAF2', 'Gene', '54949', (67, 73)) ('SDHAF2', 'Gene', (67, 73)) 116744 31687641 In addition, the allele frequency of rare SDHAF2 variants (<0.05%) is 0.4%, and SDHAF2 is loss-of-function tolerant and fairly missense tolerant. ('SDHAF2', 'Gene', (42, 48)) ('SDHAF2', 'Gene', '54949', (42, 48)) ('variants', 'Var', (49, 57)) ('SDHAF2', 'Gene', '54949', (80, 86)) ('SDHAF2', 'Gene', (80, 86)) ('loss-of-function', 'NegReg', (90, 106)) 116746 31687641 In the present family, the inheritance of the SDHAF2 variant is presumed to be through the paternal lineage as the proband's mother (II.2) tested negative for the familial variant. ('SDHAF2', 'Gene', (46, 52)) ('variant', 'Var', (53, 60)) ('SDHAF2', 'Gene', '54949', (46, 52)) 116751 31687641 Nevertheless, given the small number of family members, the limited information regarding paternal relatives, and overall rarity of SDHAF2-related PCC/PGLs, we cannot form any conclusions on the association between thyroid neoplasia and an SDHAF2 variant. ('thyroid neoplasia', 'Disease', (215, 232)) ('association', 'Interaction', (195, 206)) ('SDHAF2', 'Gene', '54949', (240, 246)) ('neoplasia', 'Phenotype', 'HP:0002664', (223, 232)) ('SDHAF2', 'Gene', (240, 246)) ('PGLs', 'Phenotype', 'HP:0002668', (151, 155)) ('SDHAF2', 'Gene', '54949', (132, 138)) ('SDHAF2', 'Gene', (132, 138)) ('variant', 'Var', (247, 254)) ('thyroid neoplasia', 'Disease', 'MESH:D013959', (215, 232)) ('thyroid neoplasia', 'Phenotype', 'HP:0100031', (215, 232)) ('PCC', 'Disease', (147, 150)) ('PCC', 'Disease', 'MESH:D010673', (147, 150)) 116753 31687641 SDHB immunohistochemistry failed to provide further evidence for pathogenic involvement of the germline SDHAF2 variant observed in this family. ('variant', 'Var', (111, 118)) ('SDHAF2', 'Gene', '54949', (104, 110)) ('SDHAF2', 'Gene', (104, 110)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) 116758 31687641 For all carriers who likely inherited the SDHAF2 variant paternally, we continue to recommend annual plasma free metanephrines and biennial whole-body MRI screening. ('variant', 'Var', (49, 56)) ('SDHAF2', 'Gene', (42, 48)) ('metanephrines', 'Chemical', 'MESH:D008676', (113, 126)) ('SDHAF2', 'Gene', '54949', (42, 48)) 116759 31687641 In summary, we describe a family with anSDHAF2 likely pathogenic variant, few of which have previously been described. ('variant', 'Var', (65, 72)) ('SDHAF2', 'Gene', '54949', (40, 46)) ('SDHAF2', 'Gene', (40, 46)) ('pathogenic', 'Reg', (54, 64)) 116760 31687641 Our findings highlight the importance of a thorough variant interpretation of a new germline SDHAF2 variant, while keeping in mind the limited evidence regarding pathogenicity, inheritance, and clinical characteristics of SDHAF2-related hereditary PGL syndrome. ('SDHAF2', 'Gene', '54949', (93, 99)) ('SDHAF2', 'Gene', (93, 99)) ('SDHAF2', 'Gene', '54949', (222, 228)) ('SDHAF2', 'Gene', (222, 228)) ('variant', 'Var', (100, 107)) ('hereditary PGL syndrome', 'Disease', (237, 260)) 116761 31687641 Screening carriers with rare variants in SDHAF2 remains individually constructed and should at least focus on symptom monitoring and physical exam. ('variants', 'Var', (29, 37)) ('SDHAF2', 'Gene', '54949', (41, 47)) ('SDHAF2', 'Gene', (41, 47)) 116763 31413764 Germline c.1A>C heterozygous pathogenic variant in SDHA reported for the first time in a young adult with a gastric gastrointestinal stromal tumour (GIST): a case report Gastrointestinal stromal tumors (GISTs) represent the most frequent mesenchymal tumor of the gastrointestinal tract. ('Gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (170, 201)) ('tumor of the gastrointestinal', 'Phenotype', 'HP:0007378', (250, 279)) ('GIST', 'Phenotype', 'HP:0100723', (149, 153)) ('tumor of the gastrointestinal tract', 'Disease', 'MESH:D004067', (250, 285)) ('tumors', 'Phenotype', 'HP:0002664', (195, 201)) ('variant', 'Var', (40, 47)) ('Gastrointestinal stromal tumors', 'Disease', (170, 201)) ('GIST', 'Phenotype', 'HP:0100723', (203, 207)) ('tumor', 'Phenotype', 'HP:0002664', (195, 200)) ('tumor of the gastrointestinal tract', 'Disease', (250, 285)) ('Gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (170, 201)) ('gastrointestinal stromal tumour', 'Phenotype', 'HP:0100723', (116, 147)) ('Gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (170, 200)) ('GISTs', 'Phenotype', 'HP:0100723', (203, 208)) ('c.1A>C', 'Mutation', 'c.1A>C', (9, 15)) ('gastric gastrointestinal stromal tumour', 'Disease', (108, 147)) ('gastric gastrointestinal stromal tumour', 'Disease', 'MESH:D004067', (108, 147)) ('tumor', 'Phenotype', 'HP:0002664', (250, 255)) ('tumor of the gastrointestinal tract', 'Phenotype', 'HP:0007378', (250, 285)) ('tumour', 'Phenotype', 'HP:0002664', (141, 147)) ('SDHA', 'Gene', (51, 55)) ('SDHA', 'Gene', '6389', (51, 55)) 116771 31413764 pathogenic variant in the SDHA. ('SDHA', 'Gene', '6389', (26, 30)) ('pathogenic', 'Reg', (0, 10)) ('variant', 'Var', (11, 18)) ('SDHA', 'Gene', (26, 30)) 116773 31413764 pathogenic variant in the SDHA is associated with a GIST. ('associated', 'Reg', (34, 44)) ('SDHA', 'Gene', (26, 30)) ('GIST', 'Disease', (52, 56)) ('SDHA', 'Gene', '6389', (26, 30)) ('GIST', 'Phenotype', 'HP:0100723', (52, 56)) ('pathogenic', 'Reg', (0, 10)) ('variant', 'Var', (11, 18)) 116774 31413764 SDHA pathogenic variants increase the risk of paraganglioma, pheochromocytoma, GIST, pituitary adenoma and renal cancer in an autosomal dominant inherited condition named paraganglioma syndrome type 5. ('paraganglioma', 'Disease', (171, 184)) ('autosomal dominant inherited condition', 'Disease', 'None', (126, 164)) ('paraganglioma', 'Disease', 'MESH:D010235', (171, 184)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (61, 77)) ('paraganglioma', 'Phenotype', 'HP:0002668', (46, 59)) ('cancer', 'Phenotype', 'HP:0002664', (113, 119)) ('SDHA', 'Gene', (0, 4)) ('renal cancer', 'Disease', (107, 119)) ('paraganglioma syndrome', 'Disease', (171, 193)) ('pheochromocytoma', 'Disease', (61, 77)) ('renal cancer', 'Phenotype', 'HP:0009726', (107, 119)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (61, 77)) ('SDHA', 'Gene', '6389', (0, 4)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (85, 102)) ('paraganglioma', 'Phenotype', 'HP:0002668', (171, 184)) ('autosomal dominant inherited condition', 'Disease', (126, 164)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (85, 102)) ('pituitary adenoma', 'Disease', (85, 102)) ('increase', 'PosReg', (25, 33)) ('renal cancer', 'Disease', 'MESH:D007680', (107, 119)) ('variants', 'Var', (16, 24)) ('paraganglioma', 'Disease', (46, 59)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (171, 193)) ('GIST', 'Disease', (79, 83)) ('paraganglioma', 'Disease', 'MESH:D010235', (46, 59)) ('GIST', 'Phenotype', 'HP:0100723', (79, 83)) 116775 31413764 The absence of family history of tumors in SDHA pathogenic variants carriers could be related to its low penetrance. ('variants', 'Var', (59, 67)) ('tumor', 'Phenotype', 'HP:0002664', (33, 38)) ('SDHA', 'Gene', '6389', (43, 47)) ('tumors', 'Disease', 'MESH:D009369', (33, 39)) ('tumors', 'Phenotype', 'HP:0002664', (33, 39)) ('tumors', 'Disease', (33, 39)) ('SDHA', 'Gene', (43, 47)) 116780 31413764 These tumors are driven mostly by CD117 (KIT) and platelet-derived growth factor receptor alpha (PDGFRalpha) gain of function mutations but, about a 15% are KIT and PDGFRalpha wild type (WT). ('PDGFRalpha', 'Gene', '5156', (165, 175)) ('gain of function', 'PosReg', (109, 125)) ('CD117', 'Gene', '3815', (34, 39)) ('CD117', 'Gene', (34, 39)) ('PDGFRalpha', 'Gene', (165, 175)) ('tumors', 'Phenotype', 'HP:0002664', (6, 12)) ('platelet-derived growth factor receptor alpha', 'Gene', '5156', (50, 95)) ('tumors', 'Disease', (6, 12)) ('tumors', 'Disease', 'MESH:D009369', (6, 12)) ('platelet-derived growth factor receptor alpha', 'Gene', (50, 95)) ('PDGFRalpha', 'Gene', '5156', (97, 107)) ('mutations', 'Var', (126, 135)) ('PDGFRalpha', 'Gene', (97, 107)) ('tumor', 'Phenotype', 'HP:0002664', (6, 11)) 116790 31413764 The second group corresponds to the SDH-deficient GISTs and they are related to germline pathogenic variants in succinate dehydrogenase complex (SDHx) genes or SDHC promoter hypermethylation. ('SDHx', 'Gene', (145, 149)) ('GIST', 'Phenotype', 'HP:0100723', (50, 54)) ('SDH-deficient GISTs', 'Disease', (36, 55)) ('variants', 'Var', (100, 108)) ('succinate dehydrogenase', 'Gene', '6389', (112, 135)) ('SDHC', 'Gene', (160, 164)) ('GISTs', 'Phenotype', 'HP:0100723', (50, 55)) ('SDH-deficient GISTs', 'Disease', 'MESH:D007153', (36, 55)) ('succinate dehydrogenase', 'Gene', (112, 135)) ('SDHx', 'Chemical', '-', (145, 149)) ('SDHC', 'Gene', '6391', (160, 164)) 116797 31413764 As a consequence, loss of expression of SDHB in a tumor specimen could be used as a suspicion of a germline SDHx mutation. ('expression', 'MPA', (26, 36)) ('mutation', 'Var', (113, 121)) ('SDHB', 'Gene', '6390', (40, 44)) ('loss of', 'NegReg', (18, 25)) ('SDHB', 'Gene', (40, 44)) ('tumor', 'Disease', 'MESH:D009369', (50, 55)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('SDHx', 'Chemical', '-', (108, 112)) ('SDHx', 'Gene', (108, 112)) ('tumor', 'Disease', (50, 55)) 116799 31413764 SDHx germline mutations have been associated to different kind of tumors, mainly paraganglioma and pheochromocytoma. ('tumor', 'Phenotype', 'HP:0002664', (66, 71)) ('associated', 'Reg', (34, 44)) ('paraganglioma', 'Phenotype', 'HP:0002668', (81, 94)) ('germline mutations', 'Var', (5, 23)) ('pheochromocytoma', 'Disease', (99, 115)) ('paraganglioma', 'Disease', (81, 94)) ('tumors', 'Disease', (66, 72)) ('tumors', 'Disease', 'MESH:D009369', (66, 72)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (99, 115)) ('SDHx', 'Chemical', '-', (0, 4)) ('tumors', 'Phenotype', 'HP:0002664', (66, 72)) ('SDHx', 'Gene', (0, 4)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (99, 115)) ('paraganglioma', 'Disease', 'MESH:D010235', (81, 94)) 116800 31413764 SDHA (5p15.33) heterozygous pathogenic variants are related to an autosomal dominant inherited condition named paraganglioma syndrome type 5 (PGL5, OMIM 614165) associated to an increase in the risk of developing paragangliomas, pheochromocytomas, GIST and pituitary adenomas. ('autosomal dominant inherited condition', 'Disease', (66, 104)) ('paraganglioma', 'Phenotype', 'HP:0002668', (111, 124)) ('PGL5', 'Gene', '6389', (142, 146)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (229, 245)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (229, 246)) ('pheochromocytomas', 'Disease', (229, 246)) ('paragangliomas', 'Disease', 'MESH:D010235', (213, 227)) ('SDHA', 'Gene', (0, 4)) ('paragangliomas', 'Phenotype', 'HP:0002668', (213, 227)) ('paraganglioma', 'Phenotype', 'HP:0002668', (213, 226)) ('paraganglioma syndrome', 'Disease', 'MESH:D010235', (111, 133)) ('SDHA', 'Gene', '6389', (0, 4)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (257, 275)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (229, 246)) ('GIST', 'Disease', (248, 252)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (257, 275)) ('pituitary adenomas', 'Disease', (257, 275)) ('GIST', 'Phenotype', 'HP:0100723', (248, 252)) ('variants', 'Var', (39, 47)) ('autosomal dominant inherited condition', 'Disease', 'None', (66, 104)) ('paragangliomas', 'Disease', (213, 227)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (257, 274)) ('PGL5', 'Gene', (142, 146)) ('paraganglioma syndrome', 'Disease', (111, 133)) 116801 31413764 The Carney-Stratakis syndrome (CSS) also known as GIST-paraganglioma dyad, (OMIM 606864) characterized by the presence of paraganglioma and GIST in the same individual, is related to germline mutations in SDHB, SDHC and SDHD, but its association with SDHA pathogenic mutations has been rarely recognized. ('paraganglioma', 'Disease', 'MESH:D010235', (55, 68)) ('SDHC', 'Gene', (211, 215)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (4, 29)) ('related', 'Reg', (172, 179)) ('mutations', 'Var', (192, 201)) ('SDHB', 'Gene', (205, 209)) ('paraganglioma', 'Disease', (122, 135)) ('GIST', 'Phenotype', 'HP:0100723', (140, 144)) ('SDHD', 'Gene', '6392', (220, 224)) ('paraganglioma', 'Disease', 'MESH:D010235', (122, 135)) ('paraganglioma', 'Phenotype', 'HP:0002668', (55, 68)) ('SDHA', 'Gene', (251, 255)) ('GIST', 'Phenotype', 'HP:0100723', (50, 54)) ('GIST-paraganglioma dyad', 'Disease', (50, 73)) ('SDHA', 'Gene', '6389', (251, 255)) ('SDHD', 'Gene', (220, 224)) ('Carney-Stratakis syndrome', 'Disease', (4, 29)) ('SDHC', 'Gene', '6391', (211, 215)) ('paraganglioma', 'Phenotype', 'HP:0002668', (122, 135)) ('GIST-paraganglioma dyad', 'Disease', 'MESH:D046152', (50, 73)) ('SDHB', 'Gene', '6390', (205, 209)) ('paraganglioma', 'Disease', (55, 68)) 116803 31413764 Lastly, homozygous and compound heterozygous mutations in the SDHA have been occasionally related to the Leigh syndrome, a rare recessive disease characterized by neurodegenerative mitochondrial encephalomyopathy that becomes apparent mostly in the first year of life. ('neurodegenerative mitochondrial encephalomyopathy', 'Disease', (163, 212)) ('homozygous', 'Var', (8, 18)) ('rare recessive disease', 'Disease', 'MESH:D035583', (123, 145)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (105, 119)) ('SDHA', 'Gene', (62, 66)) ('rare recessive disease', 'Disease', (123, 145)) ('Leigh syndrome', 'Disease', (105, 119)) ('neurodegenerative mitochondrial encephalomyopathy', 'Disease', 'MESH:D017237', (163, 212)) ('related', 'Reg', (90, 97)) ('mitochondrial encephalomyopathy', 'Phenotype', 'HP:0006789', (181, 212)) ('SDHA', 'Gene', '6389', (62, 66)) ('compound heterozygous mutations', 'Var', (23, 54)) 116819 31413764 Sequence analysis of coding exons and flanking intronic regions of SDHD (NM_003002.2), SDHB (NM_003000.2), SDHC (NM_003001.3) and SDHA (NM_004168.2) was undertaken in germline DNA using standard PCR and direct sequencing reactions, avoiding SDHC and SDHA pseudogenes (BigDye v3.1, Applied Biosystems, Foster City, CA). ('SDHD', 'Gene', (67, 71)) ('SDHC', 'Gene', (241, 245)) ('SDHD', 'Gene', '6392', (67, 71)) ('SDHA', 'Gene', '6389', (250, 254)) ('NM_003001.3', 'Var', (113, 124)) ('SDHC', 'Gene', (107, 111)) ('SDHA', 'Gene', (130, 134)) ('SDHA', 'Gene', '6389', (130, 134)) ('SDHC', 'Gene', '6391', (241, 245)) ('SDHC', 'Gene', '6391', (107, 111)) ('NM_003000.2', 'Var', (93, 104)) ('SDHB', 'Gene', '6390', (87, 91)) ('SDHB', 'Gene', (87, 91)) ('SDHA', 'Gene', (250, 254)) 116822 31413764 This missense variant is predicted to be pathogenic because it affects to the initiation codon AUG (methionine), which is responsible for translation initiation from the messenger RNA (mRNA). ('AUG', 'Gene', (95, 98)) ('affects', 'Reg', (63, 70)) ('missense', 'Var', (5, 13)) ('methionine', 'Chemical', 'MESH:D008715', (100, 110)) 116824 31413764 These results suggest that the paternal grandfather, who died as a consequence of a pituitary adenoma, could be obligate carrier of the c.1A > C; p.(Met1?) ('c.1A > C', 'Mutation', 'c.1A>C', (136, 144)) ('p.(Met1?)', 'SUBSTITUTION', 'None', (146, 155)) ('pituitary adenoma', 'Disease', (84, 101)) ('p.(Met1?', 'Var', (146, 154)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (84, 101)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (84, 101)) 116826 31413764 variant has previously been reported in a patient diagnosed with Leigh syndrome, in which genetic analysis revealed the presence of a compound heterozygote mutation in the SDHA. ('Leigh syndrome', 'Disease', (65, 79)) ('reported', 'Reg', (28, 36)) ('SDHA', 'Gene', (172, 176)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (65, 79)) ('patient', 'Species', '9606', (42, 49)) ('variant', 'Var', (0, 7)) ('SDHA', 'Gene', '6389', (172, 176)) ('mutation', 'Var', (156, 164)) 116827 31413764 Second allele mutation, in trans with the other SDHA pathogenic variant, corresponded to a heterozygous A to C substitution which changed the methionine translation initiation codon to a leucine. ('methionine', 'Chemical', 'MESH:D008715', (142, 152)) ('methionine translation initiation codon', 'MPA', (142, 181)) ('SDHA', 'Gene', '6389', (48, 52)) ('SDHA', 'Gene', (48, 52)) ('changed', 'Reg', (130, 137)) ('leucine', 'Chemical', 'MESH:D007930', (187, 194)) ('substitution', 'Var', (111, 123)) 116829 31413764 variant in SDHA as pathogenic. ('SDHA', 'Gene', '6389', (11, 15)) ('pathogenic', 'Reg', (19, 29)) ('SDHA', 'Gene', (11, 15)) ('variant', 'Var', (0, 7)) 116830 31413764 In another recent report which includes 972 patients with paraganglioma-pheochromocytoma, a 66 year old patient diagnosed of thoracic paraganglioma, with negative family history of other malignancies, carried the c.1A > C pathogenic variant in the SDHA. ('patient', 'Species', '9606', (44, 51)) ('paraganglioma-pheochromocytoma', 'Disease', (58, 88)) ('paraganglioma-pheochromocytoma', 'Disease', 'MESH:D010673', (58, 88)) ('c.1A > C', 'Mutation', 'c.1A>C', (213, 221)) ('patients', 'Species', '9606', (44, 52)) ('paraganglioma', 'Phenotype', 'HP:0002668', (134, 147)) ('paraganglioma', 'Phenotype', 'HP:0002668', (58, 71)) ('pathogenic', 'Reg', (222, 232)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (72, 88)) ('SDHA', 'Gene', (248, 252)) ('malignancies', 'Disease', 'MESH:D009369', (187, 199)) ('patient', 'Species', '9606', (104, 111)) ('thoracic paraganglioma', 'Disease', 'MESH:D010235', (125, 147)) ('c.1A > C', 'Var', (213, 221)) ('thoracic paraganglioma', 'Disease', (125, 147)) ('malignancies', 'Disease', (187, 199)) ('SDHA', 'Gene', '6389', (248, 252)) 116831 31413764 Another germline pathogenic variant in the same codon (c.2 T > C) has been reported in a 23 year old patient with a WT GIST and a renal chromophobe cell tumor. ('renal chromophobe cell tumor', 'Disease', (130, 158)) ('GIST', 'Phenotype', 'HP:0100723', (119, 123)) ('c.2 T > C', 'Mutation', 'rs750380279', (55, 64)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('renal chromophobe cell tumor', 'Disease', 'MESH:C538614', (130, 158)) ('c.2 T > C', 'Var', (55, 64)) ('patient', 'Species', '9606', (101, 108)) 116832 31413764 SDHA heterozygous pathogenic variants are related to a different spectrum of tumours. ('tumours', 'Phenotype', 'HP:0002664', (77, 84)) ('tumours', 'Disease', 'MESH:D009369', (77, 84)) ('SDHA', 'Gene', (0, 4)) ('tumours', 'Disease', (77, 84)) ('variants', 'Var', (29, 37)) ('SDHA', 'Gene', '6389', (0, 4)) ('tumour', 'Phenotype', 'HP:0002664', (77, 83)) 116833 31413764 Germline SDHA variants have been quite recently reported to be associated to paragangliomas and the disease penetrance among carriers is estimated to be low. ('paraganglioma', 'Phenotype', 'HP:0002668', (77, 90)) ('SDHA', 'Gene', '6389', (9, 13)) ('variants', 'Var', (14, 22)) ('associated', 'Reg', (63, 73)) ('SDHA', 'Gene', (9, 13)) ('paragangliomas', 'Phenotype', 'HP:0002668', (77, 91)) ('paragangliomas and the disease', 'Disease', 'MESH:D010235', (77, 107)) 116834 31413764 PGL5 is associated with an increase in the risk of developing paragangliomas, pheochromocytomas, GISTs and pituitary adenomas, and it's compatible with our clinical suspicion on the basis of this patient's GIST, her paternal grandfather pituitary adenoma and the co-segregation of the c.1A > C pathogenic variant in the SDHA gene with the disease. ('PGL5', 'Gene', '6389', (0, 4)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (78, 94)) ('SDHA', 'Gene', (320, 324)) ('GISTs', 'Disease', (97, 102)) ('pheochromocytomas', 'Disease', (78, 95)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (78, 95)) ('SDHA', 'Gene', '6389', (320, 324)) ('pituitary adenomas', 'Disease', 'MESH:D010911', (107, 125)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (237, 254)) ('c.1A > C', 'Mutation', 'c.1A>C', (285, 293)) ('paragangliomas', 'Disease', 'MESH:D010235', (62, 76)) ('paraganglioma', 'Phenotype', 'HP:0002668', (62, 75)) ('paragangliomas', 'Phenotype', 'HP:0002668', (62, 76)) ('pituitary adenomas', 'Phenotype', 'HP:0002893', (107, 125)) ('pituitary adenomas', 'Disease', (107, 125)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (237, 254)) ('pituitary adenoma', 'Disease', (237, 254)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (107, 124)) ('patient', 'Species', '9606', (196, 203)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (78, 95)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (107, 124)) ('c.1A > C', 'Var', (285, 293)) ('GIST', 'Phenotype', 'HP:0100723', (97, 101)) ('paragangliomas', 'Disease', (62, 76)) ('GIST', 'Phenotype', 'HP:0100723', (206, 210)) ('PGL5', 'Gene', (0, 4)) ('GISTs', 'Phenotype', 'HP:0100723', (97, 102)) 116835 31413764 The CSS, characterized by the presence of paraganglioma and GIST in the same individual is principally related to germline mutations in SDHB, SDHC and SDHD, but its association with SDHA pathogenic mutations is more exceptional. ('mutations', 'Var', (123, 132)) ('GIST', 'Phenotype', 'HP:0100723', (60, 64)) ('SDHA', 'Gene', (182, 186)) ('SDHB', 'Gene', '6390', (136, 140)) ('paraganglioma', 'Phenotype', 'HP:0002668', (42, 55)) ('SDHC', 'Gene', (142, 146)) ('CSS', 'Disease', (4, 7)) ('paraganglioma', 'Disease', (42, 55)) ('SDHD', 'Gene', (151, 155)) ('SDHB', 'Gene', (136, 140)) ('SDHD', 'Gene', '6392', (151, 155)) ('SDHC', 'Gene', '6391', (142, 146)) ('SDHA', 'Gene', '6389', (182, 186)) ('related', 'Reg', (103, 110)) ('paraganglioma', 'Disease', 'MESH:D010235', (42, 55)) 116837 31413764 We also emphasize that her paternal grandfather (obligate carrier of SDHA pathogenic variant) died as a consequence of a pituitary adenoma, which is also associated with SDHA pathogenic variants, but it's not a typical feature of CSS. ('pituitary adenoma', 'Disease', (121, 138)) ('pituitary adenoma', 'Disease', 'MESH:D010911', (121, 138)) ('SDHA', 'Gene', '6389', (170, 174)) ('SDHA', 'Gene', (69, 73)) ('variant', 'Var', (85, 92)) ('pituitary adenoma', 'Phenotype', 'HP:0002893', (121, 138)) ('SDHA', 'Gene', (170, 174)) ('variants', 'Var', (186, 194)) ('SDHA', 'Gene', '6389', (69, 73)) 116839 31413764 In fact, currently, in an era in which genetic analyses are more accurate and performed more extensively, patients with a previous clinical diagnosis of CT can show SDHx mutations. ('SDHx', 'Chemical', '-', (165, 169)) ('mutations', 'Var', (170, 179)) ('patients', 'Species', '9606', (106, 114)) ('SDHx', 'Gene', (165, 169)) 116840 31413764 The clinical course of our patient and of the c.1A > C; p.(Met1?) ('p.(Met1?)', 'SUBSTITUTION', 'None', (56, 65)) ('c.1A', 'Var', (46, 50)) ('p.(Met1?', 'Var', (56, 64)) ('patient', 'Species', '9606', (27, 34)) ('c.1A > C', 'Mutation', 'c.1A>C', (46, 54)) 116841 31413764 SDHA pathogenic variant carriers in her paternal family could help define better their clinical diagnoses in the spectrum of SDHA inherited related conditions, but we must take into consideration that SDHA variants have a reduced disease penetrance compared to other components of SDHx complex, especially SDHB and SDHD. ('disease penetrance', 'MPA', (230, 248)) ('SDHA', 'Gene', '6389', (125, 129)) ('SDHA', 'Gene', '6389', (201, 205)) ('variants', 'Var', (206, 214)) ('SDHA', 'Gene', (0, 4)) ('SDHB', 'Gene', (306, 310)) ('SDHx', 'Chemical', '-', (281, 285)) ('SDHA', 'Gene', (125, 129)) ('SDHD', 'Gene', '6392', (315, 319)) ('SDHA', 'Gene', (201, 205)) ('SDHD', 'Gene', (315, 319)) ('SDHA', 'Gene', '6389', (0, 4)) ('reduced', 'NegReg', (222, 229)) ('SDHB', 'Gene', '6390', (306, 310)) 116848 31413764 pathogenic variation in the SDHA seems to be associated to a gastric GIST in the context of PGL5. ('associated to', 'Reg', (45, 58)) ('PGL5', 'Gene', (92, 96)) ('SDHA', 'Gene', (28, 32)) ('gastric GIST', 'Disease', (61, 73)) ('variation', 'Var', (11, 20)) ('GIST', 'Phenotype', 'HP:0100723', (69, 73)) ('pathogenic', 'Reg', (0, 10)) ('SDHA', 'Gene', '6389', (28, 32)) ('PGL5', 'Gene', '6389', (92, 96)) 116855 31100940 Somatic or germline mutation of genes encoding enzymes catalyzing pivotal steps of the TCA cycle not only disrupts cellular respiration, but also causes severe alterations in mitochondrial metabolite pools. ('disrupts', 'NegReg', (106, 114)) ('alterations', 'Reg', (160, 171)) ('TCA', 'Chemical', 'MESH:D014233', (87, 90)) ('cellular respiration', 'MPA', (115, 135)) ('germline mutation', 'Var', (11, 28)) ('mitochondrial metabolite pools', 'MPA', (175, 205)) ('cycle', 'Gene', (91, 96)) ('causes', 'Reg', (146, 152)) ('cycle', 'Gene', '655516', (91, 96)) 116857 31100940 In this review, we will address the TCA cycle mutations leading to the development of PPGL, and we will discuss the relevance of these mutations for the transformation of neural crest-derived cells and potential therapeutic approaches based on the emerging knowledge of underlying molecular alterations. ('cycle', 'Gene', '655516', (40, 45)) ('mutations', 'Var', (46, 55)) ('TCA', 'Chemical', 'MESH:D014233', (36, 39)) ('cycle', 'Gene', (40, 45)) ('PGL', 'Phenotype', 'HP:0002668', (87, 90)) ('leading to', 'Reg', (56, 66)) ('PPGL', 'Gene', (86, 90)) 116859 31100940 This observation suggested that defects in mitochondrial respiration could be the underlying cause of cancer. ('cancer', 'Phenotype', 'HP:0002664', (102, 108)) ('defects', 'Var', (32, 39)) ('cancer', 'Disease', (102, 108)) ('cancer', 'Disease', 'MESH:D009369', (102, 108)) ('mitochondrial respiration', 'MPA', (43, 68)) 116861 31100940 At the beginning of the 21st century, the first mutations in the SDHD gene were reported, providing for the first time a link between germline alterations in a metabolic gene and the development of cancer, and demonstrating how disruption of mitochondrial respiration may lead to tumor development. ('disruption', 'Var', (228, 238)) ('cancer', 'Disease', 'MESH:D009369', (198, 204)) ('SDHD', 'Gene', (65, 69)) ('cancer', 'Disease', (198, 204)) ('tumor', 'Disease', 'MESH:D009369', (280, 285)) ('tumor', 'Phenotype', 'HP:0002664', (280, 285)) ('cancer', 'Phenotype', 'HP:0002664', (198, 204)) ('tumor', 'Disease', (280, 285)) ('mitochondrial respiration', 'MPA', (242, 267)) ('lead to', 'Reg', (272, 279)) ('alterations', 'Var', (143, 154)) ('mutations', 'Var', (48, 57)) 116862 31100940 Moreover, the description of the first germline mutations in the SDHD gene in patients with hereditary pheochromocytoma (PCC) and paraganglioma (PGL) (together referred to as PPGL) marked a milestone in the study of this rare disease. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (103, 119)) ('hereditary pheochromocytoma', 'Disease', 'MESH:D010673', (92, 119)) ('germline mutations', 'Var', (39, 57)) ('paraganglioma', 'Phenotype', 'HP:0002668', (130, 143)) ('paraganglioma', 'Disease', (130, 143)) ('hereditary pheochromocytoma', 'Disease', (92, 119)) ('patients', 'Species', '9606', (78, 86)) ('PGL', 'Phenotype', 'HP:0002668', (145, 148)) ('paraganglioma', 'Disease', 'MESH:D010235', (130, 143)) ('PGL', 'Phenotype', 'HP:0002668', (176, 179)) ('SDHD', 'Gene', (65, 69)) ('PCC', 'Phenotype', 'HP:0002666', (121, 124)) 116863 31100940 For a long time it was thought that the tricarboxylic acid (TCA) cycle was so crucial to the metabolism of living cells that any significant defect, including mutations affecting the pivotal enzymatic activities, would be highly unlikely and probably incompatible with life. ('tricarboxylic acid', 'Chemical', 'MESH:D014233', (40, 58)) ('cycle', 'Gene', (65, 70)) ('mutations', 'Var', (159, 168)) ('cycle', 'Gene', '655516', (65, 70)) ('TCA', 'Chemical', 'MESH:D014233', (60, 63)) 116865 31100940 Thus, ~23% of PPGLs are found carrying mutations in genes encoding energy metabolism enzymes such as the succinate dehydrogenase (SDH) subunits (SDHx genes), fumarate hydratase or fumarase (FH), malate dehydrogenase 2 (MDH2), isocitrate dehydrogenases 1 (cytosolic), 2 and 3 (IDH1/2/3), glutamic-oxaloacetic transaminase 2 (GOT2) and solute carrier family 25 member 11 (SLC25A11) (Figure 1). ('IDH1/2/3', 'Gene', (276, 284)) ('fumarase', 'Gene', (180, 188)) ('GOT2', 'Gene', (324, 328)) ('isocitrate', 'Chemical', 'MESH:C034219', (226, 236)) ('SDH', 'Gene', (145, 148)) ('succinate dehydrogenase', 'Gene', (105, 128)) ('malate dehydrogenase 2', 'Gene', (195, 217)) ('PGL', 'Phenotype', 'HP:0002668', (15, 18)) ('fumarate hydratase', 'Gene', '2271', (158, 176)) ('SDH', 'Gene', (130, 133)) ('MDH2', 'Gene', (219, 223)) ('mutations', 'Var', (39, 48)) ('IDH1/2/3', 'Gene', '3417;3418', (276, 284)) ('SLC25A11', 'Gene', (370, 378)) ('glutamic-oxaloacetic transaminase 2', 'Gene', '2806', (287, 322)) ('fumarase', 'Gene', '2271', (180, 188)) ('malate dehydrogenase 2', 'Gene', '4191', (195, 217)) ('SLC25A11', 'Gene', '8402', (370, 378)) ('PPGLs', 'Chemical', '-', (14, 19)) ('GOT2', 'Gene', '2806', (324, 328)) ('solute carrier family 25 member 11', 'Gene', '8402', (334, 368)) ('succinate dehydrogenase', 'Gene', '6390', (105, 128)) ('SDHx', 'Chemical', '-', (145, 149)) ('SDH', 'Gene', '6390', (145, 148)) ('MDH2', 'Gene', '4191', (219, 223)) ('FH', 'Gene', '2271', (190, 192)) ('glutamic-oxaloacetic transaminase 2', 'Gene', (287, 322)) ('solute carrier family 25 member 11', 'Gene', (334, 368)) ('fumarate hydratase', 'Gene', (158, 176)) ('SDH', 'Gene', '6390', (130, 133)) 116868 31100940 Although PPGLs are predominantly benign and patients can be cured by surgical removal of these tumors, they present a significant morbidity and mortality due to the clinical aggressiveness of metastatic tumors (especially those carrying mutations in TCA cycle-related genes), for which therapeutic options remain scarce. ('aggressiveness of metastatic tumors', 'Disease', 'MESH:C538445', (174, 209)) ('tumors', 'Disease', 'MESH:D009369', (95, 101)) ('cycle', 'Gene', (254, 259)) ('patients', 'Species', '9606', (44, 52)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('tumors', 'Disease', (203, 209)) ('tumors', 'Disease', (95, 101)) ('aggressiveness of metastatic tumors', 'Disease', (174, 209)) ('tumors', 'Disease', 'MESH:D009369', (203, 209)) ('tumors', 'Phenotype', 'HP:0002664', (95, 101)) ('PPGLs', 'Chemical', '-', (9, 14)) ('tumors', 'Phenotype', 'HP:0002664', (203, 209)) ('cycle', 'Gene', '655516', (254, 259)) ('PGL', 'Phenotype', 'HP:0002668', (10, 13)) ('aggressiveness', 'Phenotype', 'HP:0000718', (174, 188)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('TCA', 'Chemical', 'MESH:D014233', (250, 253)) ('mutations', 'Var', (237, 246)) 116871 31100940 Germline loss-of-function mutations in SDHA, SDHB, SDHC, SDHD and SDHAF2 (together accounting for 20% of all PPGLs) cause the well-characterized familial PGL syndromes known as PGL5, PGL4, PGL3, PGL1 and PGL2, respectively (Table 1). ('PGL5', 'Gene', '6389', (177, 181)) ('SDHAF2', 'Gene', (66, 72)) ('SDHAF2', 'Gene', '54949', (66, 72)) ('SDHA', 'Gene', (66, 70)) ('mutations', 'Var', (26, 35)) ('PGL', 'Phenotype', 'HP:0002668', (110, 113)) ('PGL2', 'Gene', '54949', (204, 208)) ('SDHA', 'Gene', '6389', (66, 70)) ('SDHC', 'Gene', (51, 55)) ('SDHD', 'Gene', (57, 61)) ('PGL', 'Phenotype', 'HP:0002668', (189, 192)) ('familial PGL syndromes', 'Disease', 'MESH:D010235', (145, 167)) ('SDHB', 'Gene', (45, 49)) ('loss-of-function', 'NegReg', (9, 25)) ('SDHA', 'Gene', (39, 43)) ('familial PGL syndromes', 'Disease', (145, 167)) ('PGL', 'Phenotype', 'HP:0002668', (154, 157)) ('SDHA', 'Gene', '6389', (39, 43)) ('PGL3', 'Gene', (189, 193)) ('PGL2', 'Gene', (204, 208)) ('PGL', 'Phenotype', 'HP:0002668', (177, 180)) ('PGL5', 'Gene', (177, 181)) ('PPGLs', 'Chemical', '-', (109, 114)) ('PGL3', 'Gene', '6391', (189, 193)) ('SDHC', 'Gene', '6391', (51, 55)) ('PGL', 'Phenotype', 'HP:0002668', (183, 186)) ('PGL4', 'Gene', (183, 187)) ('PGL4', 'Gene', '6390', (183, 187)) 116876 31100940 Germline or somatic mutations in any of the SDH genes (SDHx) cause disassembly of the mitochondrial complex, with loss of SDH enzymatic activity and thus triggering the accumulation of its substrate, succinate. ('cause', 'Reg', (61, 66)) ('accumulation', 'MPA', (169, 181)) ('SDH', 'Gene', (44, 47)) ('SDH', 'Gene', '6390', (55, 58)) ('succinate', 'Chemical', 'MESH:D019802', (200, 209)) ('triggering', 'Reg', (154, 164)) ('disassembly', 'MPA', (67, 78)) ('SDH', 'Gene', (122, 125)) ('loss', 'NegReg', (114, 118)) ('SDH', 'Gene', '6390', (122, 125)) ('SDH', 'Gene', '6390', (44, 47)) ('SDH', 'Gene', (55, 58)) ('SDHx', 'Chemical', '-', (55, 59)) ('mutations', 'Var', (20, 29)) ('succinate', 'MPA', (200, 209)) 116878 31100940 This causes a global hypermethylation with a characteristic CpG island methylation phenotype (CIMP) profile in the tumors, which leads to altered gene expression and contributes to tumorigenesis; this same mechanism was earlier observed in glioblastomas and ccRCCs carrying metabolic alterations such as IDH1/2 and FH/SDHB mutations, respectively. ('tumor', 'Disease', (115, 120)) ('FH', 'Gene', '2271', (315, 317)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) ('tumor', 'Disease', 'MESH:D009369', (115, 120)) ('CIMP', 'Chemical', '-', (94, 98)) ('glioblastomas', 'Phenotype', 'HP:0012174', (240, 253)) ('tumors', 'Phenotype', 'HP:0002664', (115, 121)) ('ccRCCs', 'Phenotype', 'HP:0006770', (258, 264)) ('mutations', 'Var', (323, 332)) ('tumor', 'Phenotype', 'HP:0002664', (115, 120)) ('tumors', 'Disease', (115, 121)) ('glioblastomas', 'Disease', (240, 253)) ('gene expression', 'MPA', (146, 161)) ('IDH1/2', 'Gene', '3417;3418', (304, 310)) ('ccRCCs', 'Disease', (258, 264)) ('tumor', 'Disease', (181, 186)) ('altered', 'Reg', (138, 145)) ('IDH1/2', 'Gene', (304, 310)) ('glioblastomas', 'Disease', 'MESH:D005909', (240, 253)) ('tumors', 'Disease', 'MESH:D009369', (115, 121)) ('tumor', 'Disease', 'MESH:D009369', (181, 186)) 116881 31100940 Moreover, the accumulation of succinate also causes downregulation of the enzyme responsible for the conversion of norepinephrine to epinephrine, thus inducing the characteristic noradrenergic phenotype of SDHx tumors. ('noradrenergic', 'MPA', (179, 192)) ('enzyme', 'Enzyme', (74, 80)) ('accumulation', 'Var', (14, 26)) ('epinephrine', 'Chemical', 'MESH:D004837', (133, 144)) ('succinate', 'MPA', (30, 39)) ('tumors', 'Phenotype', 'HP:0002664', (211, 217)) ('SDHx tumors', 'Disease', 'MESH:D009369', (206, 217)) ('tumor', 'Phenotype', 'HP:0002664', (211, 216)) ('downregulation', 'NegReg', (52, 66)) ('SDHx tumors', 'Disease', (206, 217)) ('succinate', 'Chemical', 'MESH:D019802', (30, 39)) ('inducing', 'PosReg', (151, 159)) ('norepinephrine', 'Chemical', 'MESH:D009638', (115, 129)) ('epinephrine', 'Chemical', 'MESH:D004837', (118, 129)) 116882 31100940 All these processes orchestrated by succinate (and fumarate) accumulation (both referred to as oncometabolites) have been proposed to be involved in tumorigenesis (Figure 2) and/or in the particular phenotype of PPGLs carrying TCA cycle-related mutations. ('involved', 'Reg', (137, 145)) ('succinate', 'MPA', (36, 45)) ('tumor', 'Disease', 'MESH:D009369', (149, 154)) ('mutations', 'Var', (245, 254)) ('PGL', 'Phenotype', 'HP:0002668', (213, 216)) ('TCA', 'Gene', (227, 230)) ('tumor', 'Phenotype', 'HP:0002664', (149, 154)) ('PPGLs', 'Chemical', '-', (212, 217)) ('TCA', 'Chemical', 'MESH:D014233', (227, 230)) ('fumarate', 'Chemical', 'MESH:D005650', (51, 59)) ('tumor', 'Disease', (149, 154)) ('succinate', 'Chemical', 'MESH:D019802', (36, 45)) ('cycle', 'Gene', (231, 236)) ('cycle', 'Gene', '655516', (231, 236)) 116884 31100940 Regarding the clinical presentation of SDHD mutations carriers, they primarily develop (multiple) H&N PGLs (84% of cases), although up to 22% also develop TAP PGLs and 12-24% develop PCCs (mainly unilateral); 3-10% of carriers develop metastases. ('PCC', 'Phenotype', 'HP:0002666', (183, 186)) ('develop TAP', 'Disease', (147, 158)) ('develop', 'PosReg', (79, 86)) ('SDHD', 'Gene', (39, 43)) ('metastases', 'Disease', 'MESH:D009362', (235, 245)) ('develop', 'CPA', (227, 234)) ('PGL', 'Phenotype', 'HP:0002668', (102, 105)) ('metastases', 'Disease', (235, 245)) ('PGL', 'Phenotype', 'HP:0002668', (159, 162)) ('mutations', 'Var', (44, 53)) ('develop', 'Disease', (175, 182)) ('N', 'Chemical', 'MESH:D009584', (100, 101)) ('also', 'PosReg', (142, 146)) 116885 31100940 GISTs, PAs and, more rarely, ccRCCs can develop in SDHD mutation carriers. ('ccRCCs', 'Phenotype', 'HP:0006770', (29, 35)) ('GISTs', 'Phenotype', 'HP:0100723', (0, 5)) ('GISTs', 'Disease', (0, 5)) ('PAs', 'Disease', (7, 10)) ('ccRCCs', 'Disease', (29, 35)) ('PAs', 'Disease', 'MESH:D011471', (7, 10)) ('PAs', 'Phenotype', 'HP:0002893', (7, 10)) ('mutation', 'Var', (56, 64)) ('SDHD', 'Gene', (51, 55)) 116886 31100940 One year after the finding of the first SDHD germline mutations in patients with PGL, mutations in SDHB, the gene encoding the SDH iron-sulfur subunit, were described as the genetic cause of hereditary PGL type 4. ('PGL', 'Phenotype', 'HP:0002668', (81, 84)) ('mutations', 'Var', (86, 95)) ('patients', 'Species', '9606', (67, 75)) ('SDH', 'Gene', (99, 102)) ('SDH', 'Gene', (127, 130)) ('sulfur', 'Chemical', 'MESH:D013455', (136, 142)) ('hereditary PGL type 4', 'Disease', (191, 212)) ('cause', 'Reg', (182, 187)) ('PGL', 'Phenotype', 'HP:0002668', (202, 205)) ('iron', 'Chemical', 'MESH:D007501', (131, 135)) ('SDH', 'Gene', '6390', (40, 43)) ('SDH', 'Gene', '6390', (99, 102)) ('SDH', 'Gene', '6390', (127, 130)) ('SDH', 'Gene', (40, 43)) 116887 31100940 Soon, the presence of either point mutations or gross deletions affecting SDHB far surpassed the prevalence of SDHD mutations in patients with PPGL. ('patients', 'Species', '9606', (129, 137)) ('SDHB', 'Gene', (74, 78)) ('PGL', 'Phenotype', 'HP:0002668', (144, 147)) ('gross deletions', 'Var', (48, 63)) ('point mutations', 'Var', (29, 44)) 116888 31100940 Overall, mutations in SDHB and SDHD account for the great majority (over 60%) of all SDHx-related PGL patients, and SDHB itself accounts for approximately 10% of all PPGLs. ('SDHD', 'Gene', (31, 35)) ('PGL', 'Phenotype', 'HP:0002668', (98, 101)) ('mutations', 'Var', (9, 18)) ('patients', 'Species', '9606', (102, 110)) ('PGL', 'Phenotype', 'HP:0002668', (167, 170)) ('SDHx', 'Chemical', '-', (85, 89)) ('SDHB', 'Gene', (22, 26)) ('PGL', 'Disease', (98, 101)) ('PPGLs', 'Chemical', '-', (166, 171)) ('SDHx-related', 'Gene', (85, 97)) 116889 31100940 Unlike SDHD-associated clinical manifestations (i.e., multiple H&N PGLs), SDHB mutation carriers are usually diagnosed with single tumors that can arise in different locations (i.e., PCC, TAP PGL and H&N PGL). ('N', 'Chemical', 'MESH:D009584', (202, 203)) ('PGL', 'Phenotype', 'HP:0002668', (204, 207)) ('PGL', 'Phenotype', 'HP:0002668', (67, 70)) ('PCC', 'Phenotype', 'HP:0002666', (183, 186)) ('SDHB', 'Var', (74, 78)) ('tumor', 'Phenotype', 'HP:0002664', (131, 136)) ('usually', 'Reg', (101, 108)) ('PGL', 'Phenotype', 'HP:0002668', (192, 195)) ('tumors', 'Phenotype', 'HP:0002664', (131, 137)) ('tumors', 'Disease', 'MESH:D009369', (131, 137)) ('tumors', 'Disease', (131, 137)) ('and H&N', 'Disease', (196, 203)) ('N', 'Chemical', 'MESH:D009584', (65, 66)) 116890 31100940 Paradoxically, mutations in SDHB show one of the lowest penetrances amongst the SDHx genes (13-21% at the age of 50 years), but patients carrying germline SDHB mutations present a higher risk of malignancy (~50%) than other SDHx mutation carriers. ('malignancy', 'Disease', (195, 205)) ('mutations', 'Var', (160, 169)) ('SDHB', 'Gene', (155, 159)) ('mutations', 'Var', (15, 24)) ('SDHx', 'Chemical', '-', (224, 228)) ('patients', 'Species', '9606', (128, 136)) ('SDHx', 'Chemical', '-', (80, 84)) ('SDHB', 'Gene', (28, 32)) ('malignancy', 'Disease', 'MESH:D009369', (195, 205)) 116892 31100940 In fact, the presence of mutations in SDHB is the best biomarker of poor prognosis and malignancy in PGL syndromes. ('mutations', 'Var', (25, 34)) ('malignancy', 'Disease', 'MESH:D009369', (87, 97)) ('PGL syndromes', 'Disease', (101, 114)) ('malignancy', 'Disease', (87, 97)) ('SDHB', 'Gene', (38, 42)) ('PGL', 'Phenotype', 'HP:0002668', (101, 104)) 116893 31100940 In addition, the absence of SDHB immunostaining in tumor cells, probably caused by altered assembly or SDH complex stability, is a reliable identifier of PPGLs caused not only by SDHB mutations, but also by any other SDHx mutation. ('SDH', 'Gene', '6390', (179, 182)) ('SDH', 'Gene', '6390', (103, 106)) ('SDH', 'Gene', '6390', (28, 31)) ('SDH', 'Gene', '6390', (217, 220)) ('tumor', 'Phenotype', 'HP:0002664', (51, 56)) ('mutations', 'Var', (184, 193)) ('PPGLs', 'Chemical', '-', (154, 159)) ('absence', 'NegReg', (17, 24)) ('SDH', 'Gene', (179, 182)) ('tumor', 'Disease', (51, 56)) ('SDH', 'Gene', (217, 220)) ('SDH', 'Gene', (28, 31)) ('caused', 'Reg', (160, 166)) ('SDHx', 'Chemical', '-', (217, 221)) ('PGL', 'Phenotype', 'HP:0002668', (155, 158)) ('SDH', 'Gene', (103, 106)) ('PPGLs', 'Disease', (154, 159)) ('tumor', 'Disease', 'MESH:D009369', (51, 56)) 116896 31100940 Though SDHC was the second SDHx gene identified as a cause of hereditary PGL (PGL type 3), the frequency of patients carrying mutations in this gene is much lower than SDHB- and SDHD-related PPGLs, accounting for less than 1% of the patients. ('cause', 'Reg', (53, 58)) ('PPGLs', 'Chemical', '-', (191, 196)) ('PGL', 'Phenotype', 'HP:0002668', (78, 81)) ('SDHB-', 'Gene', '6390', (168, 173)) ('SDHC', 'Gene', (7, 11)) ('hereditary PGL', 'Disease', (62, 76)) ('PGL', 'Phenotype', 'HP:0002668', (192, 195)) ('SDHx', 'Chemical', '-', (27, 31)) ('SDHB-', 'Gene', (168, 173)) ('SDHC', 'Gene', '6391', (7, 11)) ('PGL', 'Phenotype', 'HP:0002668', (73, 76)) ('mutations', 'Var', (126, 135)) ('patients', 'Species', '9606', (108, 116)) ('patients', 'Species', '9606', (233, 241)) 116897 31100940 SDHC mutations result primarily in benign and non-functional H&N PGLs, but they have also been identified in patients with sympathetic PGLs. ('result', 'Reg', (15, 21)) ('with sympathetic', 'Disease', (118, 134)) ('patients', 'Species', '9606', (109, 117)) ('SDHC', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) ('SDHC', 'Gene', '6391', (0, 4)) ('N', 'Chemical', 'MESH:D009584', (63, 64)) ('PGL', 'Phenotype', 'HP:0002668', (65, 68)) ('H&N', 'Disease', (61, 64)) ('PGL', 'Phenotype', 'HP:0002668', (135, 138)) 116898 31100940 Although no somatic point mutation affecting SDHC has been reported to date in PPGL, postzygotic epimutations in the gene promoter region have been identified in patients with PGLs, Carney triad (GIST, pulmonary chondroma and PGLs), and Carney-Stratakis syndrome (PGL and GIST). ('pulmonary chondroma', 'Disease', (202, 221)) ('patients', 'Species', '9606', (162, 170)) ('Carney triad', 'Disease', (182, 194)) ('pulmonary chondroma', 'Phenotype', 'HP:0031474', (202, 221)) ('Carney-Stratakis syndrome', 'Disease', (237, 262)) ('SDHC', 'Gene', (45, 49)) ('PGL', 'Phenotype', 'HP:0002668', (226, 229)) ('PGLs', 'Disease', (176, 180)) ('epimutations', 'Var', (97, 109)) ('SDHC', 'Gene', '6391', (45, 49)) ('PGL', 'Phenotype', 'HP:0002668', (264, 267)) ('identified', 'Reg', (148, 158)) ('pulmonary chondroma', 'Disease', 'MESH:D002812', (202, 221)) ('Carney-Stratakis syndrome', 'Disease', 'MESH:C564650', (237, 262)) ('PGL', 'Phenotype', 'HP:0002668', (176, 179)) ('PGL', 'Phenotype', 'HP:0002668', (80, 83)) 116901 31100940 Although until now there are few patients reported, it seems that in general SDHC mutation carriers have low risk of developing GISTs and PAs. ('SDHC', 'Gene', (77, 81)) ('PAs', 'Phenotype', 'HP:0002893', (138, 141)) ('patients', 'Species', '9606', (33, 41)) ('SDHC', 'Gene', '6391', (77, 81)) ('mutation', 'Var', (82, 90)) ('GISTs', 'Phenotype', 'HP:0100723', (128, 133)) ('PAs', 'Disease', (138, 141)) ('PAs', 'Disease', 'MESH:D011471', (138, 141)) ('GISTs', 'Disease', (128, 133)) 116902 31100940 Paradoxically, mutations affecting the gene encoding one of the two major catalytic subunits of the SDH complex were described subsequently to mutations affecting the other members of the complex. ('mutations', 'Var', (15, 24)) ('SDH', 'Gene', '6390', (100, 103)) ('SDH', 'Gene', (100, 103)) 116904 31100940 This can be explained because, although SDHA variants are significantly enriched in PPGL cases, several SDHA alleles show a high prevalence amongst the normal population (i.e., 0.1-1% in gnomAD), and were therefore not considered as causative mutations in PPGL patients. ('PPGL', 'Disease', (84, 88)) ('PGL', 'Phenotype', 'HP:0002668', (85, 88)) ('SDHA', 'Gene', (104, 108)) ('SDHA', 'Gene', '6389', (40, 44)) ('variants', 'Var', (45, 53)) ('PGL', 'Phenotype', 'HP:0002668', (257, 260)) ('SDHA', 'Gene', (40, 44)) ('patients', 'Species', '9606', (261, 269)) ('SDHA', 'Gene', '6389', (104, 108)) 116905 31100940 Mutations in SDHA have the lowest penetrance of all major PGL predisposition genes (10% at age 70 years), and therefore most SDHA mutation carriers will not manifest the disease. ('SDHA', 'Gene', '6389', (125, 129)) ('PGL predisposition genes', 'Gene', (58, 82)) ('PGL', 'Phenotype', 'HP:0002668', (58, 61)) ('SDHA', 'Gene', (125, 129)) ('lowest', 'NegReg', (27, 33)) ('Mutations', 'Var', (0, 9)) ('SDHA', 'Gene', '6389', (13, 17)) ('SDHA', 'Gene', (13, 17)) 116906 31100940 Familial PPGL related to mutations in SDHA shows a prevalence of 3%, especially in patients with PGL, although it is not rare to find mutations in cases developing PCC. ('PGL', 'Phenotype', 'HP:0002668', (97, 100)) ('mutations', 'Var', (25, 34)) ('SDHA', 'Gene', (38, 42)) ('patients', 'Species', '9606', (83, 91)) ('SDHA', 'Gene', '6389', (38, 42)) ('PGL', 'Phenotype', 'HP:0002668', (10, 13)) ('PCC', 'Phenotype', 'HP:0002666', (164, 167)) ('related', 'Reg', (14, 21)) ('Familial PPGL', 'Disease', (0, 13)) 116907 31100940 The presence of metastasis in SDHA mutation carriers is 12%, and extraparaganglial manifestations such as PAs, GIST and ccRCC have also been described. ('metastasis', 'CPA', (16, 26)) ('PAs', 'Disease', (106, 109)) ('ccRCC', 'Disease', (120, 125)) ('GIST', 'Disease', (111, 115)) ('PAs', 'Disease', 'MESH:D011471', (106, 109)) ('SDHA', 'Gene', '6389', (30, 34)) ('mutation', 'Var', (35, 43)) ('PAs', 'Phenotype', 'HP:0002893', (106, 109)) ('SDHA', 'Gene', (30, 34)) 116909 31100940 As occurs with SDHD mutation carriers, carriers of SDHAF2 mutations show an exclusively paternal transmission of the disease, maybe because both genes are located on the same chromosome and may follow the same route to tumorigenesis. ('tumor', 'Phenotype', 'HP:0002664', (219, 224)) ('mutations', 'Var', (58, 67)) ('tumor', 'Disease', (219, 224)) ('follow', 'Reg', (194, 200)) ('SDHAF2', 'Gene', (51, 57)) ('SDHAF2', 'Gene', '54949', (51, 57)) ('tumor', 'Disease', 'MESH:D009369', (219, 224)) 116910 31100940 Patients carrying mutations in SDHAF2 develop PGLs only in the H&N region, and frequently (74% of mutation carriers) in multiple locations. ('PGLs', 'Protein', (46, 50)) ('develop', 'PosReg', (38, 45)) ('SDHAF2', 'Gene', '54949', (31, 37)) ('SDHAF2', 'Gene', (31, 37)) ('PGL', 'Phenotype', 'HP:0002668', (46, 49)) ('Patients', 'Species', '9606', (0, 8)) ('N', 'Chemical', 'MESH:D009584', (65, 66)) ('mutations', 'Var', (18, 27)) 116911 31100940 Though the SDHAF1 gene has been found mutated in SDH-defective infantile leukoencephalopathy, no mutations have been reported in PPGL to date. ('mutated', 'Var', (38, 45)) ('SDH-defective infantile leukoencephalopathy', 'Disease', (49, 92)) ('PGL', 'Phenotype', 'HP:0002668', (130, 133)) ('infantile leukoencephalopathy', 'Phenotype', 'HP:0007105', (63, 92)) ('leukoencephalopathy', 'Phenotype', 'HP:0002352', (73, 92)) ('SDH-defective infantile leukoencephalopathy', 'Disease', 'MESH:D056784', (49, 92)) ('SDHAF1', 'Gene', '644096', (11, 17)) ('encephalopathy', 'Phenotype', 'HP:0001298', (78, 92)) ('SDHAF1', 'Gene', (11, 17)) 116915 31100940 Inactivating germline mutations affecting the FH gene are the cause of hereditary leiomyomatosis and renal cell carcinoma (HLRCC), but, as far as we know, no PPGL has been reported in families with HLRCC. ('germline', 'Var', (13, 21)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (101, 121)) ('cause', 'Reg', (62, 67)) ('carcinoma', 'Phenotype', 'HP:0030731', (112, 121)) ('PGL', 'Phenotype', 'HP:0002668', (159, 162)) ('Inactivating germline', 'Var', (0, 21)) ('FH', 'Gene', '2271', (46, 48)) ('hereditary leiomyomatosis and renal cell carcinoma', 'Disease', 'MESH:C535516', (71, 121)) 116916 31100940 In 2013, a germline mutation in FH was found in a patient with PCC by whole exome sequencing (WES) applied to a tumor displaying transcriptional and methylation (CIMP profile) similarities to SDH-mutant tumors. ('patient', 'Species', '9606', (50, 57)) ('tumor', 'Phenotype', 'HP:0002664', (203, 208)) ('tumor', 'Disease', (203, 208)) ('tumors', 'Disease', (203, 209)) ('found', 'Reg', (39, 44)) ('SDH', 'Gene', (192, 195)) ('tumors', 'Disease', 'MESH:D009369', (203, 209)) ('CIMP', 'Chemical', '-', (162, 166)) ('tumor', 'Disease', 'MESH:D009369', (112, 117)) ('tumors', 'Phenotype', 'HP:0002664', (203, 209)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('tumor', 'Disease', 'MESH:D009369', (203, 208)) ('germline mutation', 'Var', (11, 28)) ('tumor', 'Disease', (112, 117)) ('PCC', 'Phenotype', 'HP:0002666', (63, 66)) ('SDH', 'Gene', '6390', (192, 195)) ('PCC', 'Disease', (63, 66)) ('FH', 'Gene', '2271', (32, 34)) 116918 31100940 The prevalence of alterations in the gene is about 1% in PPGL patients, and a metastatic phenotype and presence of multiple tumors located in the adrenal gland or in TAP paraganglia are the clinical characteristics of PPGLs associated with FH mutations. ('alterations', 'Var', (18, 29)) ('PPGLs', 'Chemical', '-', (218, 223)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('FH', 'Gene', '2271', (240, 242)) ('PGL', 'Phenotype', 'HP:0002668', (58, 61)) ('tumors located in the adrenal gland', 'Phenotype', 'HP:0100631', (124, 159)) ('patients', 'Species', '9606', (62, 70)) ('associated', 'Reg', (224, 234)) ('mutations', 'Var', (243, 252)) ('PGL', 'Phenotype', 'HP:0002668', (219, 222)) ('multiple tumors', 'Disease', (115, 130)) ('multiple tumors', 'Disease', 'MESH:D009369', (115, 130)) ('tumors', 'Phenotype', 'HP:0002664', (124, 130)) ('PPGLs', 'Disease', (218, 223)) ('metastatic', 'CPA', (78, 88)) 116919 31100940 In addition, fumarate causes a non-enzymatic covalent modification of cysteine residues in proteins, S-(2-succinyl) cysteine (2SC), that can be detected by immunohistochemistry and has been proposed as a biomarker for FH-associated neoplasia. ('cysteine', 'Chemical', 'MESH:D003545', (70, 78)) ('fumarate', 'Chemical', 'MESH:D005650', (13, 21)) ('fumarate', 'Var', (13, 21)) ('non-enzymatic', 'MPA', (31, 44)) ('2SC', 'Chemical', 'MESH:C511650', (126, 129)) ('FH', 'Gene', '2271', (218, 220)) ('neoplasia', 'Disease', (232, 241)) ('S-(2-succinyl) cysteine', 'Chemical', 'MESH:C511650', (101, 124)) ('cysteine', 'Chemical', 'MESH:D003545', (116, 124)) ('neoplasia', 'Phenotype', 'HP:0002664', (232, 241)) ('neoplasia', 'Disease', 'MESH:D009369', (232, 241)) 116922 31100940 Very recently, additional variants have been reported, accounting for <1% of the patients, and their involvement in noradrenergic PPGLs with malignant behavior has been suggested. ('involvement', 'Reg', (101, 112)) ('PPGLs', 'Chemical', '-', (130, 135)) ('patients', 'Species', '9606', (81, 89)) ('PGL', 'Phenotype', 'HP:0002668', (131, 134)) ('noradrenergic PPGLs', 'Disease', (116, 135)) ('variants', 'Var', (26, 34)) 116923 31100940 Tumors carrying MDH2 mutations showed no accumulation of malate, and though knockdown of MDH2 in HeLa cells triggered the accumulation of both malate and fumarate, the connection between mutations in this gene and tumorigenesis is not clear. ('tumor', 'Disease', 'MESH:D009369', (214, 219)) ('MDH2', 'Gene', '4191', (89, 93)) ('malate', 'Chemical', 'MESH:C030298', (57, 63)) ('fumarate', 'Chemical', 'MESH:D005650', (154, 162)) ('MDH2', 'Gene', (89, 93)) ('tumor', 'Phenotype', 'HP:0002664', (214, 219)) ('Tumors', 'Disease', (0, 6)) ('accumulation of', 'MPA', (122, 137)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) ('fumarate', 'MPA', (154, 162)) ('malate', 'Chemical', 'MESH:C030298', (143, 149)) ('tumor', 'Disease', (214, 219)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('MDH2', 'Gene', '4191', (16, 20)) ('MDH2', 'Gene', (16, 20)) ('HeLa', 'CellLine', 'CVCL:0030', (97, 101)) ('mutations', 'Var', (21, 30)) 116924 31100940 Subsequent to the finding of MDH2 mutations in PPGL, biallelic mutations of the gene were found as the cause of severe encephalopathy in pediatric patients, reinforcing the pathological role of alterations in this particular gene. ('encephalopathy', 'Phenotype', 'HP:0001298', (119, 133)) ('PPGL', 'Gene', (47, 51)) ('encephalopathy', 'Disease', 'MESH:D001927', (119, 133)) ('patients', 'Species', '9606', (147, 155)) ('cause', 'Reg', (103, 108)) ('PGL', 'Phenotype', 'HP:0002668', (48, 51)) ('MDH2', 'Gene', '4191', (29, 33)) ('MDH2', 'Gene', (29, 33)) ('encephalopathy', 'Disease', (119, 133)) ('mutations', 'Var', (34, 43)) ('biallelic mutations', 'Var', (53, 72)) 116926 31100940 Recurrent, and mutually exclusive, mutations in the genes IDH1 (involving R132) and IDH2 (involving R172), result in neomorphic production of the oncometabolite D-2-hydroxyglutarate (D2HG) that ultimately causes the characteristic CIMP profile previously mentioned for succinate and fumarate accumulation. ('fumarate', 'Chemical', 'MESH:D005650', (283, 291)) ('CIMP profile', 'MPA', (231, 243)) ('IDH1', 'Gene', '3417', (58, 62)) ('succinate', 'Chemical', 'MESH:D019802', (269, 278)) ('IDH2', 'Gene', (84, 88)) ('CIMP', 'Chemical', '-', (231, 235)) ('D-2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (161, 181)) ('IDH2', 'Gene', '3418', (84, 88)) ('mutations', 'Var', (35, 44)) ('IDH1', 'Gene', (58, 62)) ('neomorphic', 'CPA', (117, 127)) ('causes', 'Reg', (205, 211)) ('result in', 'Reg', (107, 116)) 116927 31100940 Somatic mutations in the IDH1 gene (p.R132C), frequently found in central nervous system tumors, have been rarely identified in PGLs (i.e., three benign tumors in TAP or H&N locations). ('tumors', 'Phenotype', 'HP:0002664', (89, 95)) ('central nervous system tumors', 'Disease', (66, 95)) ('found', 'Reg', (57, 62)) ('PGLs', 'Disease', (128, 132)) ('benign tumors', 'Disease', (146, 159)) ('p.R132C', 'Mutation', 'rs121913499', (36, 43)) ('central nervous system tumors', 'Phenotype', 'HP:0100006', (66, 95)) ('nervous system tumors', 'Phenotype', 'HP:0004375', (74, 95)) ('N', 'Chemical', 'MESH:D009584', (172, 173)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('tumors', 'Phenotype', 'HP:0002664', (153, 159)) ('central nervous system tumors', 'Disease', 'MESH:D016543', (66, 95)) ('IDH1', 'Gene', (25, 29)) ('PGL', 'Phenotype', 'HP:0002668', (128, 131)) ('p.R132C', 'Var', (36, 43)) ('tumor', 'Phenotype', 'HP:0002664', (89, 94)) ('benign tumors', 'Disease', 'MESH:D009369', (146, 159)) ('IDH1', 'Gene', '3417', (25, 29)) 116929 31100940 Moreover, we recently found a germline truncating mutation affecting IDH3B in a patient with a single H&N PGL showing an altered alphaKG/isocitrate ratio and a CIMP-like profile. ('germline truncating mutation', 'Var', (30, 58)) ('isocitrate', 'Chemical', 'MESH:C034219', (137, 147)) ('altered alphaKG/isocitrate', 'MPA', (121, 147)) ('CIMP', 'Chemical', '-', (160, 164)) ('PGL', 'Phenotype', 'HP:0002668', (106, 109)) ('IDH3B', 'Gene', '3420', (69, 74)) ('patient', 'Species', '9606', (80, 87)) ('N', 'Chemical', 'MESH:D009584', (104, 105)) ('IDH3B', 'Gene', (69, 74)) 116930 31100940 Homozygous loss-of-function mutations in IDH3B have been found in families with retinitis pigmentosa, a hereditary neurodegeneration of rod and cone photoreceptors in the retina. ('hereditary neurodegeneration', 'Disease', 'MESH:D020271', (104, 132)) ('retinitis pigmentosa', 'Disease', 'MESH:C538365', (80, 100)) ('hereditary neurodegeneration', 'Disease', (104, 132)) ('retinitis', 'Phenotype', 'HP:0032118', (80, 89)) ('retinitis pigmentosa', 'Phenotype', 'HP:0000510', (80, 100)) ('IDH3B', 'Gene', '3420', (41, 46)) ('retinitis pigmentosa', 'Disease', (80, 100)) ('loss-of-function', 'NegReg', (11, 27)) ('mutations', 'Var', (28, 37)) ('IDH3B', 'Gene', (41, 46)) ('neurodegeneration', 'Phenotype', 'HP:0002180', (115, 132)) 116932 31100940 Although the finding of an IDH3B loss-of-function variant in a neuroendocrine tumor such as PGL suggests a causative role for this gene in the disease, and also for the other two genes encoding the remaining subunits of the tetramer, further studies are needed to definitively confirm this association. ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (63, 83)) ('neuroendocrine tumor', 'Disease', 'MESH:D018358', (63, 83)) ('PGL', 'Phenotype', 'HP:0002668', (92, 95)) ('variant', 'Var', (50, 57)) ('IDH3B', 'Gene', '3420', (27, 32)) ('tumor', 'Phenotype', 'HP:0002664', (78, 83)) ('PGL', 'Disease', (92, 95)) ('neuroendocrine tumor', 'Disease', (63, 83)) ('IDH3B', 'Gene', (27, 32)) ('loss-of-function', 'NegReg', (33, 49)) 116934 31100940 Five additional patients, most of them developing metastatic TAP PGLs, were found in this study carrying SLC25A11 mutations. ('mutations', 'Var', (114, 123)) ('SLC25A11', 'Gene', (105, 113)) ('SLC25A11', 'Gene', '8402', (105, 113)) ('patients', 'Species', '9606', (16, 24)) ('metastatic TAP PGLs', 'Disease', (50, 69)) ('PGL', 'Phenotype', 'HP:0002668', (65, 68)) 116935 31100940 This gene is not directly involved in the TCA cycle, but it participates in the exchange between two major intermediates of the cycle, which suggests that inactivation of other genes causing alterations in mitochondrial homeostasis can be responsible for PPGL development as well. ('participates', 'Reg', (60, 72)) ('inactivation', 'Var', (155, 167)) ('TCA', 'Chemical', 'MESH:D014233', (42, 45)) ('mitochondrial homeostasis', 'MPA', (206, 231)) ('cycle', 'Gene', (46, 51)) ('cycle', 'Gene', (128, 133)) ('cycle', 'Gene', '655516', (46, 51)) ('cycle', 'Gene', '655516', (128, 133)) ('PGL', 'Phenotype', 'HP:0002668', (256, 259)) 116936 31100940 Moreover, a single gain-of-function mutation in the GOT2 gene, encoding the mitochondrial glutamic-oxaloacetic transaminase and also involved in stimulating the malate/aspartate shuttle, was recently reported in a patient with multiple metastatic PGL, further reinforcing the link between dysfunction of proteins involved in the exchange of metabolites between the mitochondria and the cytoplasm and PPGL. ('patient', 'Species', '9606', (214, 221)) ('gain-of-function', 'PosReg', (19, 35)) ('PGL', 'Phenotype', 'HP:0002668', (247, 250)) ('PGL', 'Phenotype', 'HP:0002668', (401, 404)) ('aspartate', 'Chemical', 'MESH:D001224', (168, 177)) ('GOT2', 'Gene', '2806', (52, 56)) ('malate', 'Chemical', 'MESH:C030298', (161, 167)) ('GOT2', 'Gene', (52, 56)) ('mutation', 'Var', (36, 44)) 116941 31100940 Moreover, a high HIF3A expression and a positive DLST immunostaining exclusively found in tumors carrying TCA cycle mutations or EPAS1 mutations further supported this pseudohypoxic link. ('hypoxic', 'Disease', (174, 181)) ('hypoxic', 'Disease', 'MESH:D000860', (174, 181)) ('EPAS1', 'Gene', (129, 134)) ('TCA', 'Chemical', 'MESH:D014233', (106, 109)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('mutations', 'Var', (135, 144)) ('DLST immunostaining', 'MPA', (49, 68)) ('HIF3A', 'Gene', '64344', (17, 22)) ('tumors', 'Disease', (90, 96)) ('tumors', 'Disease', 'MESH:D009369', (90, 96)) ('cycle', 'Gene', (110, 115)) ('mutations', 'Var', (116, 125)) ('tumors', 'Phenotype', 'HP:0002664', (90, 96)) ('cycle', 'Gene', '655516', (110, 115)) ('HIF3A', 'Gene', (17, 22)) ('EPAS1', 'Gene', '2034', (129, 134)) ('expression', 'MPA', (23, 33)) 116943 31100940 Mutations in EPAS1, as well as the stabilization of HIF-1alpha occurring in VHL- and PHD-mutated PPGLs, trigger a pseudohypoxic switch of metabolism from mitochondrial respiration to glycolysis irrespective of oxygen levels. ('VHL', 'Gene', (76, 79)) ('PPGLs', 'Gene', (97, 102)) ('mitochondrial respiration', 'MPA', (154, 179)) ('HIF-1alpha', 'Gene', (52, 62)) ('hypoxic', 'Disease', (120, 127)) ('glycolysis', 'MPA', (183, 193)) ('VHL', 'Gene', '7428', (76, 79)) ('hypoxic', 'Disease', 'MESH:D000860', (120, 127)) ('EPAS1', 'Gene', '2034', (13, 18)) ('PGL', 'Phenotype', 'HP:0002668', (98, 101)) ('EPAS1', 'Gene', (13, 18)) ('oxygen', 'Chemical', 'MESH:D010100', (210, 216)) ('Mutations', 'Var', (0, 9)) ('HIF-1alpha', 'Gene', '3091', (52, 62)) ('trigger', 'Reg', (104, 111)) ('PPGLs', 'Chemical', '-', (97, 102)) 116944 31100940 On the other hand, MYC deregulation caused by mutations in MAX may increase, in cooperation with HIF-2alpha, glucose uptake and glycolysis. ('glycolysis', 'MPA', (128, 138)) ('MAX', 'Gene', (59, 62)) ('mutations', 'Var', (46, 55)) ('HIF-2alpha', 'Gene', (97, 107)) ('glucose uptake', 'MPA', (109, 123)) ('increase', 'PosReg', (67, 75)) ('glucose', 'Chemical', 'MESH:D005947', (109, 116)) ('HIF-2alpha', 'Gene', '2034', (97, 107)) ('MYC deregulation', 'Disease', (19, 35)) 116945 31100940 Moreover, activating alterations of the phosphatidylinositol 3-kinase (PI3K)/AKT serine-threonine kinase (Akt)/mammalian target of rapamycin (mTOR) pathway (by loss-of-function mutations in NF1 and TMEM127, or gain-of-function mutations in RET, FGFR1 and HRAS) can also increase glycolysis through the transcription of glycolytic enzymes. ('RET', 'Gene', '5979', (240, 243)) ('NF1', 'Gene', '4763', (190, 193)) ('mammalian target of rapamycin', 'Gene', '2475', (111, 140)) ('mutations', 'Var', (177, 186)) ('phosphatidylinositol 3-kinase', 'Gene', (40, 69)) ('transcription', 'MPA', (302, 315)) ('AKT', 'Gene', (77, 80)) ('glycolytic enzymes', 'Enzyme', (319, 337)) ('mammalian target of rapamycin', 'Gene', (111, 140)) ('FGFR1', 'Gene', (245, 250)) ('NF1', 'Gene', (190, 193)) ('gain-of-function', 'PosReg', (210, 226)) ('TMEM127', 'Gene', (198, 205)) ('RET', 'Gene', (240, 243)) ('HRAS', 'Gene', '3265', (255, 259)) ('loss-of-function', 'NegReg', (160, 176)) ('mTOR', 'Gene', (142, 146)) ('AKT', 'Gene', '207', (77, 80)) ('HRAS', 'Gene', (255, 259)) ('TMEM127', 'Gene', '55654', (198, 205)) ('Akt', 'Gene', (106, 109)) ('mutations', 'Var', (227, 236)) ('mTOR', 'Gene', '2475', (142, 146)) ('FGFR1', 'Gene', '2260', (245, 250)) ('Akt', 'Gene', '207', (106, 109)) ('increase', 'PosReg', (270, 278)) ('phosphatidylinositol 3-kinase', 'Gene', '5293', (40, 69)) ('glycolysis', 'MPA', (279, 289)) 116946 31100940 The relevance of hereditary alterations in TCA cycle-related genes to the etiology of severe mitochondrial disorders is well known. ('cycle', 'Gene', '655516', (47, 52)) ('alterations', 'Var', (28, 39)) ('mitochondrial disorders', 'Disease', 'MESH:D028361', (93, 116)) ('mitochondrial disorders', 'Disease', (93, 116)) ('cycle', 'Gene', (47, 52)) ('TCA', 'Chemical', 'MESH:D014233', (43, 46)) 116948 31100940 This is the case for recessive germline mutations in SUCLG1 and SUCLA2. ('SUCLG1', 'Gene', (53, 59)) ('SUCLA2', 'Gene', (64, 70)) ('SUCLG1', 'Gene', '8802', (53, 59)) ('germline mutations', 'Var', (31, 49)) 116949 31100940 Moreover, ACO2 alterations cause infantile cerebellar-retinal degeneration and severe optic atrophy and spastic paraplegia; IDH3A mutations lead to severe encephalopathy in infancy; mutations in DLD cause severe encephalopathy and hyperlactatemia with neonatal onset; homozygous IDH2 mutations provoke developmental delay, epilepsy, hypotonia, cardiomyopathy, and dysmorphic features; SDHAF1 mutations lead to infantile leukoencephalopathy; SDHA alteration is a well-known cause of Leigh syndrome, cardiomyopathy and leukodystrophy; recessive SDHB mutations lead to hypotonia and leukodystrophy and SDHD mutations cause encephalomyopathy; FH alterations cause progressive encephalopathy in early childhood; and MDH2 mutations provoke early-onset severe encephalopathy. ('Leigh syndrome', 'Disease', 'MESH:D007888', (482, 496)) ('leukodystrophy', 'Disease', (517, 531)) ('hyperlactatemia', 'Disease', (231, 246)) ('ACO2', 'Gene', '50', (10, 14)) ('infantile leukoencephalopathy', 'Phenotype', 'HP:0007105', (410, 439)) ('cardiomyopathy', 'Disease', (344, 358)) ('optic atrophy', 'Disease', 'MESH:D009896', (86, 99)) ('encephalopathy', 'Disease', 'MESH:D001927', (155, 169)) ('paraplegia', 'Phenotype', 'HP:0010550', (112, 122)) ('hyperlactatemia', 'Disease', 'MESH:D065906', (231, 246)) ('MDH2', 'Gene', (711, 715)) ('infantile cerebellar-retinal degeneration', 'Disease', (33, 74)) ('encephalopathy', 'Phenotype', 'HP:0001298', (212, 226)) ('FH', 'Gene', '2271', (639, 641)) ('encephalopathy', 'Phenotype', 'HP:0001298', (155, 169)) ('leukodystrophy', 'Phenotype', 'HP:0002415', (517, 531)) ('optic atrophy', 'Disease', (86, 99)) ('IDH2', 'Gene', (279, 283)) ('SDHA', 'Gene', (441, 445)) ('developmental delay', 'Disease', (302, 321)) ('alterations', 'Var', (642, 653)) ('IDH3A', 'Gene', (124, 129)) ('IDH2', 'Gene', '3418', (279, 283)) ('encephalopathy', 'Disease', (212, 226)) ('epilepsy', 'Disease', 'MESH:D004827', (323, 331)) ('encephalopathy', 'Disease', (155, 169)) ('SDHA', 'Gene', '6389', (441, 445)) ('progressive encephalopathy', 'Phenotype', 'HP:0002448', (660, 686)) ('hypotonia', 'Phenotype', 'HP:0001290', (566, 575)) ('hypotonia', 'Disease', 'MESH:D009123', (566, 575)) ('encephalopathy', 'Disease', 'MESH:D001927', (672, 686)) ('SDHD', 'Gene', (599, 603)) ('Leigh syndrome', 'Disease', (482, 496)) ('epilepsy', 'Disease', (323, 331)) ('encephalopathy', 'Disease', 'MESH:D001927', (425, 439)) ('encephalopathy', 'Phenotype', 'HP:0001298', (425, 439)) ('leukodystrophy', 'Disease', 'MESH:D007966', (580, 594)) ('retinal degeneration', 'Phenotype', 'HP:0000546', (54, 74)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (344, 358)) ('infantile cerebellar-retinal degeneration', 'Disease', 'OMIM:614559', (33, 74)) ('leukodystrophy', 'Phenotype', 'HP:0002415', (580, 594)) ('spastic paraplegia', 'Disease', (104, 122)) ('encephalopathy', 'Disease', (425, 439)) ('SDHB', 'Gene', (543, 547)) ('cause', 'Reg', (654, 659)) ('MDH2', 'Gene', '4191', (711, 715)) ('leukoencephalopathy', 'Phenotype', 'HP:0002352', (420, 439)) ('SDHAF1', 'Gene', (385, 391)) ('hypotonia and leukodystrophy', 'Disease', 'MESH:D009123', (566, 594)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (498, 512)) ('encephalopathy', 'Disease', 'MESH:D001927', (753, 767)) ('leukodystrophy', 'Disease', (580, 594)) ('provoke', 'Reg', (726, 733)) ('hypotonia', 'Disease', (566, 575)) ('mutations', 'Var', (604, 613)) ('encephalomyopathy', 'Disease', 'MESH:D017237', (620, 637)) ('encephalopathy', 'Phenotype', 'HP:0001298', (672, 686)) ('spastic paraplegia', 'Phenotype', 'HP:0001258', (104, 122)) ('hypotonia', 'Disease', 'MESH:D009123', (333, 342)) ('cardiomyopathy', 'Phenotype', 'HP:0001638', (344, 358)) ('encephalopathy', 'Disease', (672, 686)) ('SDHAF1', 'Gene', '644096', (385, 391)) ('leukoencephalopathy', 'Disease', 'MESH:D056784', (420, 439)) ('optic atrophy', 'Phenotype', 'HP:0000648', (86, 99)) ('leukoencephalopathy', 'Disease', (420, 439)) ('developmental delay', 'Disease', 'MESH:D002658', (302, 321)) ('encephalomyopathy', 'Disease', (620, 637)) ('mutations', 'Var', (716, 725)) ('IDH3A', 'Gene', '3419', (124, 129)) ('epilepsy', 'Phenotype', 'HP:0001250', (323, 331)) ('mutations', 'Var', (548, 557)) ('encephalopathy', 'Disease', 'MESH:D001927', (212, 226)) ('spastic paraplegia', 'Disease', 'MESH:C536857', (104, 122)) ('encephalopathy', 'Phenotype', 'HP:0001298', (753, 767)) ('leukodystrophy', 'Disease', 'MESH:D007966', (517, 531)) ('lead to', 'Reg', (558, 565)) ('hypotonia', 'Phenotype', 'HP:0001290', (333, 342)) ('cardiomyopathy', 'Disease', (498, 512)) ('encephalopathy', 'Disease', (753, 767)) ('ACO2', 'Gene', (10, 14)) ('hypotonia', 'Disease', (333, 342)) ('SDHA', 'Gene', (385, 389)) ('cause', 'Reg', (614, 619)) ('developmental delay', 'Phenotype', 'HP:0001263', (302, 321)) ('SDHA', 'Gene', '6389', (385, 389)) ('cardiomyopathy', 'Disease', 'MESH:D009202', (498, 512)) 116950 31100940 In addition, homozygous mutations in SLC25A1, encoding a mitochondrial citrate carrier, cause combined D-2- and L-2-hydroxyglutaric aciduria, severe neonatal epileptic encephalopathy, absence of developmental progress, and often early death, and mutations in SLC25A19, encoding a mitochondrial transporter of a TCA cycle cofactor (thiamine pyrophosphate), cause encephalopathy and progressive polyneuropathy. ('encephalopathy', 'Phenotype', 'HP:0001298', (168, 182)) ('cycle', 'Gene', (315, 320)) ('cycle', 'Gene', '655516', (315, 320)) ('thiamine pyrophosphate', 'Chemical', 'MESH:D013835', (331, 353)) ('progressive polyneuropathy', 'Phenotype', 'HP:0007133', (381, 407)) ('TCA', 'Chemical', 'MESH:D014233', (311, 314)) ('encephalopathy', 'Disease', 'MESH:D001927', (362, 376)) ('cause', 'Reg', (356, 361)) ('encephalopathy', 'Disease', (168, 182)) ('aciduria', 'Phenotype', 'HP:0012072', (132, 140)) ('2-hydroxyglutaric aciduria', 'Phenotype', 'HP:0032278', (114, 140)) ('mutations', 'Var', (246, 255)) ('epileptic encephalopathy', 'Phenotype', 'HP:0200134', (158, 182)) ('death', 'Disease', (235, 240)) ('epileptic', 'Disease', 'MESH:D004827', (158, 167)) ('developmental progress', 'CPA', (195, 217)) ('encephalopathy', 'Phenotype', 'HP:0001298', (362, 376)) ('polyneuropathy', 'Disease', 'MESH:D011115', (393, 407)) ('polyneuropathy', 'Phenotype', 'HP:0001271', (393, 407)) ('encephalopathy', 'Disease', 'MESH:D001927', (168, 182)) ('SLC25A19', 'Gene', (259, 267)) ('SLC25A19', 'Gene', '60386', (259, 267)) ('epileptic', 'Disease', (158, 167)) ('SLC25A1', 'Gene', '6576', (259, 266)) ('encephalopathy', 'Disease', (362, 376)) ('citrate', 'Chemical', 'MESH:D019343', (71, 78)) ('SLC25A1', 'Gene', (259, 266)) ('SLC25A1', 'Gene', '6576', (37, 44)) ('SLC25A1', 'Gene', (37, 44)) ('polyneuropathy', 'Disease', (393, 407)) ('death', 'Disease', 'MESH:D003643', (235, 240)) ('L-2-hydroxyglutaric aciduria', 'Phenotype', 'HP:0040144', (112, 140)) ('cause', 'Reg', (88, 93)) 116951 31100940 Finally, L2HGDH alterations cause macrocephaly, developmental delay, epilepsy, and cerebellar ataxia. ('macrocephaly', 'Phenotype', 'HP:0000256', (34, 46)) ('L2HGDH', 'Gene', '79944', (9, 15)) ('cerebellar ataxia', 'Disease', 'MESH:D002524', (83, 100)) ('cerebellar ataxia', 'Phenotype', 'HP:0001251', (83, 100)) ('developmental delay', 'Phenotype', 'HP:0001263', (48, 67)) ('epilepsy', 'Phenotype', 'HP:0001250', (69, 77)) ('alterations', 'Var', (16, 27)) ('cause', 'Reg', (28, 33)) ('macrocephaly', 'Disease', 'MESH:D058627', (34, 46)) ('epilepsy', 'Disease', (69, 77)) ('cerebellar ataxia', 'Disease', (83, 100)) ('developmental delay', 'Disease', 'MESH:D002658', (48, 67)) ('L2HGDH', 'Gene', (9, 15)) ('macrocephaly', 'Disease', (34, 46)) ('developmental delay', 'Disease', (48, 67)) ('epilepsy', 'Disease', 'MESH:D004827', (69, 77)) 116957 31100940 These observations imply that homozygous or compound heterozygous variants in TCA cycle-related genes associated with neurological disorders do not completely abolish the corresponding enzymatic activity and retain part of their functionality. ('TCA', 'Chemical', 'MESH:D014233', (78, 81)) ('functionality', 'MPA', (229, 242)) ('abolish', 'NegReg', (159, 166)) ('neurological disorders', 'Disease', (118, 140)) ('compound heterozygous variants', 'Var', (44, 74)) ('cycle', 'Gene', (82, 87)) ('enzymatic activity', 'MPA', (185, 203)) ('neurological disorders', 'Disease', 'MESH:D009422', (118, 140)) ('cycle', 'Gene', '655516', (82, 87)) 116958 31100940 However, the presence of homozygous or compound heterozygous SDHx mutations in patients with neurological disorders gives rise to a controversial situation, which is the absence of tumors in mutation carriers. ('mutations', 'Var', (66, 75)) ('neurological disorders', 'Disease', (93, 115)) ('tumors', 'Disease', (181, 187)) ('tumors', 'Disease', 'MESH:D009369', (181, 187)) ('SDHx', 'Chemical', '-', (61, 65)) ('tumors', 'Phenotype', 'HP:0002664', (181, 187)) ('SDHx', 'Gene', (61, 65)) ('compound heterozygous', 'Var', (39, 60)) ('neurological disorders', 'Disease', 'MESH:D009422', (93, 115)) ('patients', 'Species', '9606', (79, 87)) ('tumor', 'Phenotype', 'HP:0002664', (181, 186)) 116959 31100940 In heterozygous mutation carriers, this can be either accounted for by the low penetrance of TCA cycle-related mutations (especially in the case of SDHA and SDHB variants) or by the aforementioned modest effect of the alterations found in these patients. ('mutations', 'Var', (111, 120)) ('SDHA', 'Gene', '6389', (148, 152)) ('patients', 'Species', '9606', (245, 253)) ('SDHA', 'Gene', (148, 152)) ('cycle', 'Gene', (97, 102)) ('variants', 'Var', (162, 170)) ('TCA', 'Chemical', 'MESH:D014233', (93, 96)) ('cycle', 'Gene', '655516', (97, 102)) ('SDHB', 'Gene', (157, 161)) 116961 31100940 However, taking into account that patients with L-2-hydroxyglutaric aciduria show increased risk of brain tumors, the tumorigenic potential of recessive mutations in TCA cycle-related genes cannot be ruled out. ('tumors', 'Phenotype', 'HP:0002664', (106, 112)) ('tumor', 'Disease', 'MESH:D009369', (118, 123)) ('tumor', 'Phenotype', 'HP:0002664', (118, 123)) ('TCA', 'Chemical', 'MESH:D014233', (166, 169)) ('brain tumors', 'Phenotype', 'HP:0030692', (100, 112)) ('cycle', 'Gene', (170, 175)) ('tumor', 'Disease', 'MESH:D009369', (106, 111)) ('L-2-hydroxyglutaric aciduria', 'Phenotype', 'HP:0040144', (48, 76)) ('tumor', 'Disease', (118, 123)) ('patients', 'Species', '9606', (34, 42)) ('brain tumors', 'Disease', 'MESH:D001932', (100, 112)) ('2-hydroxyglutaric aciduria', 'Phenotype', 'HP:0032278', (50, 76)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('brain tumors', 'Disease', (100, 112)) ('aciduria', 'Phenotype', 'HP:0012072', (68, 76)) ('L-2-hydroxyglutaric aciduria', 'Var', (48, 76)) ('cycle', 'Gene', '655516', (170, 175)) ('tumor', 'Disease', (106, 111)) 116962 31100940 Both PPGL patients carrying TCA cycle-related mutations and patients with encephalopathies associated with the presence of recessive mutations in the aforementioned genes may benefit from therapeutic approaches targeting the aberrant DNA/histone methylation and the DNA-repair pathway, such as the use of demethylating agents (5-aza-2'-deoxycytidine or decitabine, for instance) or PARP inhibitors, respectively. ('DNA/histone', 'Protein', (234, 245)) ('cycle', 'Gene', '655516', (32, 37)) ('decitabine', 'Chemical', 'MESH:D000077209', (353, 363)) ('mutations', 'Var', (46, 55)) ('benefit', 'PosReg', (175, 182)) ("5-aza-2'-deoxycytidine", 'Chemical', 'MESH:D000077209', (327, 349)) ('encephalopathies', 'Disease', 'MESH:D001927', (74, 90)) ('N', 'Chemical', 'MESH:D009584', (267, 268)) ('patients', 'Species', '9606', (60, 68)) ('N', 'Chemical', 'MESH:D009584', (235, 236)) ('PGL', 'Phenotype', 'HP:0002668', (6, 9)) ('TCA', 'Chemical', 'MESH:D014233', (28, 31)) ('mutations', 'Var', (133, 142)) ('patients', 'Species', '9606', (10, 18)) ('DNA-repair pathway', 'Pathway', (266, 284)) ('cycle', 'Gene', (32, 37)) ('encephalopathies', 'Disease', (74, 90)) ('encephalopathies', 'Phenotype', 'HP:0001298', (74, 90)) 116970 31100940 This process is the hallmark of the VHL syndrome, in which mutations of VHL lead to HIF-1alpha stabilization in normoxia, leading to the development of tumors (e.g., ccRCCs and PPGLs). ('VHL syndrome', 'Disease', (36, 48)) ('HIF-1alpha', 'Gene', (84, 94)) ('tumors', 'Disease', (152, 158)) ('VHL', 'Gene', '7428', (72, 75)) ('VHL', 'Gene', (36, 39)) ('PPGLs', 'Chemical', '-', (177, 182)) ('ccRCCs', 'Phenotype', 'HP:0006770', (166, 172)) ('stabilization', 'MPA', (95, 108)) ('VHL syndrome', 'Disease', 'MESH:D006623', (36, 48)) ('tumors', 'Disease', 'MESH:D009369', (152, 158)) ('VHL', 'Gene', '7428', (36, 39)) ('PGL', 'Phenotype', 'HP:0002668', (178, 181)) ('ccRCCs', 'Disease', (166, 172)) ('mutations', 'Var', (59, 68)) ('HIF-1alpha', 'Gene', '3091', (84, 94)) ('tumor', 'Phenotype', 'HP:0002664', (152, 157)) ('leading to', 'Reg', (122, 132)) ('tumors', 'Phenotype', 'HP:0002664', (152, 158)) ('VHL', 'Gene', (72, 75)) 116971 31100940 The pseudohypoxic transcriptional profile associated with the presence of mutations in TCA cycle-related genes in PPGL was first described by Patricia L Dahia in 2005. ('PPGL', 'Gene', (114, 118)) ('hypoxic', 'Disease', (10, 17)) ('hypoxic', 'Disease', 'MESH:D000860', (10, 17)) ('mutations', 'Var', (74, 83)) ('TCA', 'Chemical', 'MESH:D014233', (87, 90)) ('cycle', 'Gene', (91, 96)) ('PGL', 'Phenotype', 'HP:0002668', (115, 118)) ('cycle', 'Gene', '655516', (91, 96)) 116972 31100940 In this pioneering study, it was shown that SDH mutations, and the subsequent accumulation of succinate, caused a pseudohypoxic transcription profile similar to the one originated by VHL dysfunction. ('SDH', 'Gene', (44, 47)) ('hypoxic', 'Disease', (120, 127)) ('succinate', 'Chemical', 'MESH:D019802', (94, 103)) ('hypoxic', 'Disease', 'MESH:D000860', (120, 127)) ('mutations', 'Var', (48, 57)) ('VHL dysfunction', 'Disease', (183, 198)) ('SDH', 'Gene', '6390', (44, 47)) ('caused', 'Reg', (105, 111)) ('VHL dysfunction', 'Disease', 'MESH:D006623', (183, 198)) ('succinate', 'MPA', (94, 103)) ('accumulation', 'PosReg', (78, 90)) 116979 31100940 The association between the presence of SDHx mutations and CIMP in PPGL has been known since 2008. ('SDHx', 'Chemical', '-', (40, 44)) ('mutations', 'Var', (45, 54)) ('SDHx', 'Gene', (40, 44)) ('CIMP', 'Disease', (59, 63)) ('PGL', 'Phenotype', 'HP:0002668', (68, 71)) ('PPGL', 'Gene', (67, 71)) ('CIMP', 'Chemical', '-', (59, 63)) 116980 31100940 performed a quantitative evaluation of promoter methylation of a set of tumor suppressor genes (i.e., RASSF1A, RASSF5, CDKN2A, RARB, TNFRSF10D, CDH1, and APC), and found that five of seven tumors exhibiting a targeted CIMP profile were mutated in SDHB. ('RASSF1A', 'Gene', (102, 109)) ('tumor', 'Phenotype', 'HP:0002664', (72, 77)) ('mutated', 'Var', (236, 243)) ('promoter', 'MPA', (39, 47)) ('TNFRSF10D', 'Gene', (133, 142)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) ('RASSF5', 'Gene', (111, 117)) ('tumors', 'Phenotype', 'HP:0002664', (189, 195)) ('APC', 'Disease', 'MESH:D011125', (154, 157)) ('APC', 'Disease', (154, 157)) ('tumor', 'Disease', (72, 77)) ('CIMP', 'Chemical', '-', (218, 222)) ('tumors', 'Disease', (189, 195)) ('CDKN2A', 'Gene', (119, 125)) ('RARB', 'Gene', (127, 131)) ('tumor', 'Disease', 'MESH:D009369', (72, 77)) ('RARB', 'Gene', '5915', (127, 131)) ('tumor', 'Disease', (189, 194)) ('RASSF5', 'Gene', '83593', (111, 117)) ('CDH1', 'Gene', '999', (144, 148)) ('TNFRSF10D', 'Gene', '8793', (133, 142)) ('tumors', 'Disease', 'MESH:D009369', (189, 195)) ('RASSF1A', 'Gene', '11186', (102, 109)) ('SDHB', 'Gene', (247, 251)) ('tumor', 'Disease', 'MESH:D009369', (189, 194)) ('CDKN2A', 'Gene', '1029', (119, 125)) ('CDH1', 'Gene', (144, 148)) 116981 31100940 Moreover, this particular CIMP profile (defined by the presence of methylation in at least three of the genes included in the analysis) was associated with metastatic behavior and extra-adrenal location (both clinical characteristics related to SDHx mutations). ('SDHx', 'Gene', (245, 249)) ('associated', 'Reg', (140, 150)) ('SDHx', 'Chemical', '-', (245, 249)) ('metastatic behavior', 'CPA', (156, 175)) ('extra-adrenal location', 'CPA', (180, 202)) ('CIMP', 'Chemical', '-', (26, 30)) ('mutations', 'Var', (250, 259)) 116982 31100940 Later, it was published that the accumulation of fumarate and succinate, upon FH or SDHx mutations respectively, led to enzymatic inhibition of multiple alpha-KG-dependent dioxygenases and consequent alterations of genome-wide histone and DNA methylation, linking the TCA cycle mutations to tumorigenesis by their effect on the epigenome. ('SDHx', 'Gene', (84, 88)) ('oxygen', 'Chemical', 'MESH:D010100', (174, 180)) ('tumor', 'Disease', 'MESH:D009369', (291, 296)) ('alpha-KG', 'Chemical', '-', (153, 161)) ('mutations', 'Var', (89, 98)) ('FH', 'Gene', '2271', (78, 80)) ('mutations', 'Var', (278, 287)) ('SDHx', 'Chemical', '-', (84, 88)) ('cycle', 'Gene', (272, 277)) ('DNA methylation', 'MPA', (239, 254)) ('cycle', 'Gene', '655516', (272, 277)) ('N', 'Chemical', 'MESH:D009584', (240, 241)) ('tumor', 'Phenotype', 'HP:0002664', (291, 296)) ('accumulation', 'PosReg', (33, 45)) ('succinate', 'Chemical', 'MESH:D019802', (62, 71)) ('alterations', 'Reg', (200, 211)) ('alpha-KG-dependent dioxygenases', 'Enzyme', (153, 184)) ('inhibition', 'NegReg', (130, 140)) ('histone', 'Protein', (227, 234)) ('fumarate', 'Chemical', 'MESH:D005650', (49, 57)) ('TCA', 'Chemical', 'MESH:D014233', (268, 271)) ('tumor', 'Disease', (291, 296)) 116983 31100940 Interestingly, and like a snake that bites its tail, the methylation of the promoter of SDHC is a very well-known mechanism leading to CIMP in GIST and PPGLs. ('methylation', 'Var', (57, 68)) ('leading to', 'Reg', (124, 134)) ('CIMP', 'Chemical', '-', (135, 139)) ('CIMP', 'MPA', (135, 139)) ('PGL', 'Phenotype', 'HP:0002668', (153, 156)) ('PPGLs', 'Chemical', '-', (152, 157)) ('SDHC', 'Gene', (88, 92)) ('GIST', 'MPA', (143, 147)) ('SDHC', 'Gene', '6391', (88, 92)) 116984 31100940 In 2013, two separate studies based on DNA methylation profiling of samples carrying SDHx mutations further explored the connection between metabolic disruption and altered epigenetic modifications. ('N', 'Chemical', 'MESH:D009584', (40, 41)) ('SDHx', 'Gene', (85, 89)) ('mutations', 'Var', (90, 99)) ('SDHx', 'Chemical', '-', (85, 89)) 116987 31100940 To note, one of these methylation-based studies also uncovered mutations in FH as a cause of hereditary PPGL, expanding the CIMP to another TCA cycle-related gene beyond the SDHx genes. ('mutations', 'Var', (63, 72)) ('CIMP', 'Chemical', '-', (124, 128)) ('cycle', 'Gene', (144, 149)) ('FH', 'Gene', '2271', (76, 78)) ('TCA', 'Chemical', 'MESH:D014233', (140, 143)) ('cycle', 'Gene', '655516', (144, 149)) ('SDHx', 'Chemical', '-', (174, 178)) ('PPGL', 'Disease', (104, 108)) ('cause', 'Reg', (84, 89)) ('PGL', 'Phenotype', 'HP:0002668', (105, 108)) 116988 31100940 In addition, a sporadic PPGL has been also described showing CIMP associated with the presence of a IDH1 mutation but, as previously mentioned, tumors carrying DLST mutations do not exhibit the characteristic CIMP profile despite their accumulation of TCA metabolites. ('tumors', 'Disease', (144, 150)) ('tumors', 'Phenotype', 'HP:0002664', (144, 150)) ('mutation', 'Var', (105, 113)) ('accumulation', 'PosReg', (236, 248)) ('IDH1', 'Gene', '3417', (100, 104)) ('tumors', 'Disease', 'MESH:D009369', (144, 150)) ('PGL', 'Phenotype', 'HP:0002668', (25, 28)) ('IDH1', 'Gene', (100, 104)) ('CIMP', 'Chemical', '-', (61, 65)) ('CIMP', 'Chemical', '-', (209, 213)) ('mutations', 'Var', (165, 174)) ('TCA', 'Chemical', 'MESH:D014233', (252, 255)) ('TCA metabolites', 'MPA', (252, 267)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) 116989 31100940 To date, the presence of mutations in other genes involved in the epigenetic machinery in PPGLs exhibiting hypermethylation, and the finding of tumors with a CIMP profile not associated with mutations in any TCA cycle-related gene, further suggest that other genes and pathways may be involved in this particular phenotype. ('tumors', 'Disease', (144, 150)) ('tumors', 'Phenotype', 'HP:0002664', (144, 150)) ('mutations', 'Var', (25, 34)) ('cycle', 'Gene', (212, 217)) ('PPGLs', 'Gene', (90, 95)) ('tumors', 'Disease', 'MESH:D009369', (144, 150)) ('cycle', 'Gene', '655516', (212, 217)) ('CIMP', 'Chemical', '-', (158, 162)) ('TCA', 'Chemical', 'MESH:D014233', (208, 211)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) ('PGL', 'Phenotype', 'HP:0002668', (91, 94)) ('PPGLs', 'Chemical', '-', (90, 95)) 116990 31100940 Additional studies are required to elucidate whether the accumulation of metabolites, and the subsequent CIMP, is the cause or a consequence of the tumorigenic process and the adverse outcome associated with some TCA cycle mutations in PPGL. ('tumor', 'Phenotype', 'HP:0002664', (148, 153)) ('TCA', 'Chemical', 'MESH:D014233', (213, 216)) ('CIMP', 'Chemical', '-', (105, 109)) ('cycle', 'Gene', (217, 222)) ('tumor', 'Disease', (148, 153)) ('PPGL', 'Gene', (236, 240)) ('PGL', 'Phenotype', 'HP:0002668', (237, 240)) ('cycle', 'Gene', '655516', (217, 222)) ('metabolites', 'MPA', (73, 84)) ('mutations', 'Var', (223, 232)) ('tumor', 'Disease', 'MESH:D009369', (148, 153)) 116991 31100940 Since a link between pathological accumulation of TCA cycle metabolites and tumorigenesis was established, the study of the PPGL-associated metabolome has been used in the characterization of tumors carrying common genetic alterations, and additionally, in the identification of new candidate genes, the interpretation of genetic variants, and the improvement of diagnostics. ('tumor', 'Disease', (192, 197)) ('cycle', 'Gene', '655516', (54, 59)) ('variants', 'Var', (330, 338)) ('tumor', 'Phenotype', 'HP:0002664', (192, 197)) ('tumors', 'Disease', (192, 198)) ('tumors', 'Disease', 'MESH:D009369', (192, 198)) ('tumors', 'Phenotype', 'HP:0002664', (192, 198)) ('tumor', 'Phenotype', 'HP:0002664', (76, 81)) ('tumor', 'Disease', (76, 81)) ('tumor', 'Disease', 'MESH:D009369', (192, 197)) ('PGL', 'Phenotype', 'HP:0002668', (125, 128)) ('TCA', 'Chemical', 'MESH:D014233', (50, 53)) ('tumor', 'Disease', 'MESH:D009369', (76, 81)) ('cycle', 'Gene', (54, 59)) 116995 31100940 In addition, alterations in the metabolites' ratios can be used to identify hidden alterations in other TCA cycle-related genes. ('TCA', 'Chemical', 'MESH:D014233', (104, 107)) ('cycle', 'Gene', (108, 113)) ('alterations', 'Var', (13, 24)) ('cycle', 'Gene', '655516', (108, 113)) ('metabolites', 'MPA', (32, 43)) 116996 31100940 Thus, a tumor with a gain-of-function GOT2 mutation exhibited a high succinate:fumarate ratio, probably due to the accumulation of alphaKG and its subsequent conversion to succinate. ('mutation', 'Var', (43, 51)) ('tumor', 'Disease', 'MESH:D009369', (8, 13)) ('GOT2', 'Gene', '2806', (38, 42)) ('tumor', 'Phenotype', 'HP:0002664', (8, 13)) ('gain-of-function', 'PosReg', (21, 37)) ('fumarate', 'Chemical', 'MESH:D005650', (79, 87)) ('high succinate:fumarate ratio', 'MPA', (64, 93)) ('alphaKG', 'Protein', (131, 138)) ('conversion', 'MPA', (158, 168)) ('accumulation', 'PosReg', (115, 127)) ('tumor', 'Disease', (8, 13)) ('high succinate', 'Phenotype', 'HP:0020149', (64, 78)) ('succinate', 'Chemical', 'MESH:D019802', (172, 181)) ('GOT2', 'Gene', (38, 42)) ('succinate', 'Chemical', 'MESH:D019802', (69, 78)) 116997 31100940 Moreover, high fumarate:malate ratios have been observed in PPGLs carrying FH mutations, high absolute values of D2HG can be detected in PPGLs carrying IDH1/2 mutations, and accumulation of L2HG was found both in DLST-mutated PPGLs and in DLST-KO cells transfected with the mutated protein. ('fumarate:malate ratios', 'MPA', (15, 37)) ('IDH1/2', 'Gene', (152, 158)) ('PGL', 'Phenotype', 'HP:0002668', (61, 64)) ('PPGLs', 'Chemical', '-', (226, 231)) ('mutations', 'Var', (159, 168)) ('PPGLs', 'Chemical', '-', (60, 65)) ('mutations', 'Var', (78, 87)) ('PPGLs', 'Chemical', '-', (137, 142)) ('malate', 'Chemical', 'MESH:C030298', (24, 30)) ('high', 'PosReg', (10, 14)) ('FH', 'Gene', '2271', (75, 77)) ('PGL', 'Phenotype', 'HP:0002668', (227, 230)) ('IDH1/2', 'Gene', '3417;3418', (152, 158)) ('PGL', 'Phenotype', 'HP:0002668', (138, 141)) ('fumarate', 'Chemical', 'MESH:D005650', (15, 23)) 116998 31100940 In addition, hypermethylation (and the subsequent downregulation) of genes involved in the biosynthesis (PNMT, DRD2 and SULT1A1), transport (SLC6A2), and secretion (NPY) of catecholamines found in SDH- and FH-mutant PPGLs, may contribute to the immature catecholamine phenotypic features of PGLs carrying mutations in TCA cycle-related genes. ('FH', 'Gene', '2271', (206, 208)) ('catecholamines', 'Chemical', 'MESH:D002395', (173, 187)) ('SLC6A2', 'Gene', (141, 147)) ('PPGLs', 'Chemical', '-', (216, 221)) ('PNMT', 'Gene', '5409', (105, 109)) ('SULT1A1', 'Gene', '6817', (120, 127)) ('catecholamine', 'Chemical', 'MESH:D002395', (173, 186)) ('contribute', 'Reg', (227, 237)) ('SULT1A1', 'Gene', (120, 127)) ('N', 'Chemical', 'MESH:D009584', (106, 107)) ('DRD2', 'Gene', (111, 115)) ('SDH', 'Gene', '6390', (197, 200)) ('SLC6A2', 'Gene', '6530', (141, 147)) ('hypermethylation', 'Var', (13, 29)) ('biosynthesis', 'MPA', (91, 103)) ('TCA', 'Chemical', 'MESH:D014233', (318, 321)) ('PGL', 'Phenotype', 'HP:0002668', (291, 294)) ('DRD2', 'Gene', '1813', (111, 115)) ('SDH', 'Gene', (197, 200)) ('catecholamine', 'Chemical', 'MESH:D002395', (254, 267)) ('downregulation', 'NegReg', (50, 64)) ('PNMT', 'Gene', (105, 109)) ('secretion', 'MPA', (154, 163)) ('N', 'Chemical', 'MESH:D009584', (165, 166)) ('PPGLs', 'Gene', (216, 221)) ('PGL', 'Phenotype', 'HP:0002668', (217, 220)) ('cycle', 'Gene', (322, 327)) ('cycle', 'Gene', '655516', (322, 327)) 117000 31100940 On the whole, mutations affecting TCA cycle-related genes are associated with metastatic PPGLs for which curative chances, if any, are very limited. ('cycle', 'Gene', (38, 43)) ('associated', 'Reg', (62, 72)) ('TCA', 'Chemical', 'MESH:D014233', (34, 37)) ('cycle', 'Gene', '655516', (38, 43)) ('PPGLs', 'Chemical', '-', (89, 94)) ('metastatic PPGLs', 'Disease', (78, 94)) ('PGL', 'Phenotype', 'HP:0002668', (90, 93)) ('mutations', 'Var', (14, 23)) 117008 31100940 Lysine succinylation is a known post-translational protein modification that when occurring in histones may affect chromosome structure and function. ('affect', 'Reg', (108, 114)) ('Lysine', 'Var', (0, 6)) ('Lysine', 'Chemical', 'MESH:D008239', (0, 6)) ('chromosome structure', 'CPA', (115, 135)) 117013 31100940 This study also demonstrated that defective TCA cycle metabolism results in a DNA repair defect. ('TCA', 'Chemical', 'MESH:D014233', (44, 47)) ('DNA', 'Disease', (78, 81)) ('defective', 'Var', (34, 43)) ('cycle', 'Gene', (48, 53)) ('N', 'Chemical', 'MESH:D009584', (79, 80)) ('cycle', 'Gene', '655516', (48, 53)) ('results in', 'Reg', (65, 75)) 117015 31100940 Apart from the aforementioned effect on the succinylation of histones, inhibition of the OGDH complex also reduces lysine succinylation of cytosolic and mitochondrial proteins altering rates of enzymes and pathways, especially mitochondrial metabolic pathways. ('rates', 'MPA', (185, 190)) ('inhibition', 'Var', (71, 81)) ('lysine', 'Chemical', 'MESH:D008239', (115, 121)) ('altering', 'Reg', (176, 184)) ('mitochondrial metabolic pathways', 'Pathway', (227, 259)) ('reduces', 'NegReg', (107, 114)) ('OGDH', 'Gene', (89, 93)) ('enzymes', 'Enzyme', (194, 201)) ('OGDH', 'Gene', '4967', (89, 93)) 117016 31100940 Moreover, ablation of specific enzymes of the TCA cycle affects the availability of succinyl CoA and global enzymatic and non-enzymatic succinylation patterns, providing a novel mechanism in which mitochondrial intermediates act as sensors to regulate metabolism. ('availability of succinyl CoA', 'MPA', (68, 96)) ('cycle', 'Gene', '655516', (50, 55)) ('metabolism', 'MPA', (252, 262)) ('ablation', 'Var', (10, 18)) ('TCA', 'Chemical', 'MESH:D014233', (46, 49)) ('cycle', 'Gene', (50, 55)) ('affects', 'Reg', (56, 63)) 117017 31100940 Apart from the known approaches to treating malignant PPGLs, we will discuss here novel therapeutic strategies that should be pursued for tumors carrying alterations in the TCA cycle. ('PPGLs', 'Chemical', '-', (54, 59)) ('PGL', 'Phenotype', 'HP:0002668', (55, 58)) ('tumors', 'Disease', (138, 144)) ('tumors', 'Disease', 'MESH:D009369', (138, 144)) ('tumors', 'Phenotype', 'HP:0002664', (138, 144)) ('alterations', 'Var', (154, 165)) ('TCA', 'Chemical', 'MESH:D014233', (173, 176)) ('tumor', 'Phenotype', 'HP:0002664', (138, 143)) ('cycle', 'Gene', (177, 182)) ('cycle', 'Gene', '655516', (177, 182)) 117018 31100940 Though overall PPGLs present a low degree of chromosome instability, about 2-3% of tumors show chromothripsis involving chromosome arm 1p, where SDHB is located. ('tumor', 'Phenotype', 'HP:0002664', (83, 88)) ('chromothripsis', 'Var', (95, 109)) ('PPGLs', 'Chemical', '-', (15, 20)) ('SDHB', 'Gene', (145, 149)) ('tumors', 'Disease', (83, 89)) ('tumors', 'Phenotype', 'HP:0002664', (83, 89)) ('chromosome instability', 'Phenotype', 'HP:0040012', (45, 67)) ('tumors', 'Disease', 'MESH:D009369', (83, 89)) ('PGL', 'Phenotype', 'HP:0002668', (16, 19)) 117020 31100940 A well-known telomere stabilization mechanism involves the presence of high levels of TERT mRNA, mainly through amplification, promoter point mutations, methylation or rearrangements. ('amplification', 'MPA', (112, 125)) ('rearrangements', 'Var', (168, 182)) ('TERT', 'Gene', (86, 90)) ('N', 'Chemical', 'MESH:D009584', (93, 94)) ('methylation', 'Var', (153, 164)) ('promoter', 'MPA', (127, 135)) ('TERT', 'Gene', '7015', (86, 90)) 117023 31100940 Moreover, the presence of somatic ATRX mutations, found preferentially in SDHB/FH-mutated tumors, and the associated alternative lengthening of telomeres have been described as an independent risk factor for metastatic PPGL. ('metastatic PPGL', 'Disease', (208, 223)) ('ATRX', 'Gene', (34, 38)) ('FH', 'Gene', '2271', (79, 81)) ('tumor', 'Phenotype', 'HP:0002664', (90, 95)) ('PGL', 'Phenotype', 'HP:0002668', (220, 223)) ('mutations', 'Var', (39, 48)) ('tumors', 'Disease', (90, 96)) ('tumors', 'Disease', 'MESH:D009369', (90, 96)) ('tumors', 'Phenotype', 'HP:0002664', (90, 96)) ('ATRX', 'Gene', '546', (34, 38)) 117024 31100940 It is tempting to speculate that metastatic PPGLs related to mutations in other TCA cycle genes that also exhibit telomere dysfunction, could benefit from the multiple telomerase-targeting therapeutic strategies that have been pursued in the past two decades (reviewed in). ('PPGLs', 'Chemical', '-', (44, 49)) ('mutations', 'Var', (61, 70)) ('PGL', 'Phenotype', 'HP:0002668', (45, 48)) ('cycle', 'Gene', (84, 89)) ('TCA', 'Chemical', 'MESH:D014233', (80, 83)) ('cycle', 'Gene', '655516', (84, 89)) 117025 31100940 Another important avenue of potential treatments for metastatic PPGLs focuses on investigating whether a specific driver mutation could be associated with the tumor's immune profile, and therefore with the potential efficacy of immunotherapy. ('tumor', 'Phenotype', 'HP:0002664', (159, 164)) ('PPGLs', 'Chemical', '-', (64, 69)) ('tumor', 'Disease', (159, 164)) ('mutation', 'Var', (121, 129)) ('associated', 'Reg', (139, 149)) ('PGL', 'Phenotype', 'HP:0002668', (65, 68)) ('tumor', 'Disease', 'MESH:D009369', (159, 164)) 117030 31100940 More than 20% of PPGLs are found carrying mutations in genes encoding TCA cycle metabolic enzymes. ('PPGLs', 'Gene', (17, 22)) ('PPGLs', 'Chemical', '-', (17, 22)) ('TCA', 'Chemical', 'MESH:D014233', (70, 73)) ('PGL', 'Phenotype', 'HP:0002668', (18, 21)) ('cycle', 'Gene', (74, 79)) ('mutations', 'Var', (42, 51)) ('cycle', 'Gene', '655516', (74, 79)) 117031 31100940 These mutations cause the disruption of the cycle, and the subsequent accumulation of "oncometabolites" lead to overall pathological changes in gene expression (i.e., by DNA methylation and post-translational protein modification), metabolic adaptation of cells to hypoxia, and DNA repair processes. ('post-translational protein modification', 'MPA', (190, 229)) ('cycle', 'Gene', (44, 49)) ('metabolic adaptation', 'CPA', (232, 252)) ('gene expression', 'MPA', (144, 159)) ('N', 'Chemical', 'MESH:D009584', (171, 172)) ('cycle', 'Gene', '655516', (44, 49)) ('changes', 'Reg', (133, 140)) ('accumulation', 'PosReg', (70, 82)) ('hypoxia', 'Disease', (265, 272)) ('hypoxia', 'Disease', 'MESH:D000860', (265, 272)) ('N', 'Chemical', 'MESH:D009584', (279, 280)) ('mutations', 'Var', (6, 15)) ('cause', 'Reg', (16, 21)) 117035 30736463 We performed a retrospective study of patients age 17 years and older with metastatic PPGL who were treated with ablative therapy at Mayo Clinic, USA, between June 14, 1999 and November 14, 2017. ('metastatic', 'Var', (75, 85)) ('PGL', 'Phenotype', 'HP:0002668', (87, 90)) ('Mayo', 'Species', '162683', (133, 137)) ('patients', 'Species', '9606', (38, 46)) ('PPGL', 'Gene', (86, 90)) 117120 30736463 Even with pre-ablation adrenergic blockade and metyrosine, significant release of catecholamines can occur during ablation. ('catecholamines', 'Chemical', 'MESH:D002395', (82, 96)) ('release of catecholamines', 'MPA', (71, 96)) ('metyrosine', 'Var', (47, 57)) ('metyrosine', 'Chemical', 'MESH:D019805', (47, 57)) 117121 30736463 Therefore, it is essential for patients with functioning metastases to be treated carefully with pre-ablation adrenergic blockade and/or metyrosine and to have appropriate anesthesia care intra- and post-ablation. ('metyrosine', 'Chemical', 'MESH:D019805', (137, 147)) ('metastases', 'Disease', (57, 67)) ('patients', 'Species', '9606', (31, 39)) ('metyrosine', 'Var', (137, 147)) ('metastases', 'Disease', 'MESH:D009362', (57, 67)) 117164 30467181 Correction: Tumour risks and genotype-phenotype correlations associated with germline variants in the succinate dehydrogenase subunit genes SDHB, SDHC, and SDHD Andrews KA, Ascher DB, Pires DEV, et al. ('SDHC', 'Gene', '6391', (146, 150)) ('SDHD', 'Gene', (156, 160)) ('Tumour', 'Phenotype', 'HP:0002664', (12, 18)) ('variants', 'Var', (86, 94)) ('SDHC', 'Gene', (146, 150)) ('SDHB', 'Gene', '6390', (140, 144)) ('SDHB', 'Gene', (140, 144)) ('SDHD', 'Gene', '6392', (156, 160)) 117168 30467181 The p value from log-rank testing comparing penetrance of PPGL/HNPGL in SDHB p.Ile127Ser versus other SDHB missense mutations, reported as '0.0047', should read '0.02' (see sentence 2 of paragraph 2 under the section head 'Structure-phenotype correlations and mutation specific phenotypes' of the results). ('SDHB', 'Gene', (72, 76)) ('p.Ile127Ser', 'Mutation', 'rs786201095', (77, 88)) ('HNPGL', 'Phenotype', 'HP:0002864', (63, 68)) ('p.Ile127Ser', 'Var', (77, 88)) 117235 30140036 Clinically, sporadic NETs also present germline mutations in the DNA repair genes MUTYH, CHEK2, and BRCA2. ('MUTYH', 'Gene', (82, 87)) ('BRCA2', 'Gene', (100, 105)) ('CHEK2', 'Gene', (89, 94)) ('germline mutations', 'Var', (39, 57)) ('MUTYH', 'Gene', '4595', (82, 87)) ('NET', 'Gene', '2047', (21, 24)) ('DNA repair', 'Gene', (65, 75)) ('BRCA2', 'Gene', '675', (100, 105)) ('NETs', 'Phenotype', 'HP:0100634', (21, 25)) ('NET', 'Gene', (21, 24)) ('NET', 'Phenotype', 'HP:0100634', (21, 24)) ('CHEK2', 'Gene', '11200', (89, 94)) 117236 30140036 In contrast, NECs instead commonly have mutations in TP53 and RB1 and may share mutations in KRAS and SMAD4, genes commonly involved in the pathogenesis of ductal adenocarcinoma. ('carcinoma', 'Phenotype', 'HP:0030731', (168, 177)) ('SMAD4', 'Gene', '4089', (102, 107)) ('KRAS', 'Gene', (93, 97)) ('mutations', 'Var', (80, 89)) ('RB1', 'Gene', '5925', (62, 65)) ('ductal adenocarcinoma', 'Disease', 'MESH:D044584', (156, 177)) ('SMAD4', 'Gene', (102, 107)) ('NEC', 'Phenotype', 'HP:0100634', (13, 16)) ('KRAS', 'Gene', '3845', (93, 97)) ('ductal adenocarcinoma', 'Disease', (156, 177)) ('mutations', 'Var', (40, 49)) ('TP53', 'Gene', '7157', (53, 57)) ('RB1', 'Gene', (62, 65)) ('TP53', 'Gene', (53, 57)) 117240 30140036 As in pancreatic NETs (PanNETs), gastrointestinal NETs (GI-NETs) are mutationally quiet, with the most frequent mutated gene being CDNK1B, which harbor mutations in 8% of small intestine NETs. ('NET', 'Gene', (187, 190)) ('NET', 'Gene', '2047', (59, 62)) ('mutations', 'Var', (152, 161)) ('NET', 'Gene', (59, 62)) ('NET', 'Gene', '2047', (50, 53)) ('NET', 'Gene', '2047', (26, 29)) ('NET', 'Gene', '2047', (17, 20)) ('pancreatic', 'Disease', (6, 16)) ('NETs', 'Phenotype', 'HP:0100634', (187, 191)) ('NET', 'Phenotype', 'HP:0100634', (187, 190)) ('NET', 'Gene', (50, 53)) ('NET', 'Gene', (26, 29)) ('NETs', 'Phenotype', 'HP:0100634', (59, 63)) ('NET', 'Gene', (17, 20)) ('NET', 'Phenotype', 'HP:0100634', (59, 62)) ('CDNK1B', 'Gene', (131, 137)) ('NETs', 'Phenotype', 'HP:0100634', (50, 54)) ('gastrointestinal', 'Disease', (33, 49)) ('NET', 'Phenotype', 'HP:0100634', (50, 53)) ('NET', 'Phenotype', 'HP:0100634', (26, 29)) ('NETs', 'Phenotype', 'HP:0100634', (17, 21)) ('NET', 'Phenotype', 'HP:0100634', (17, 20)) ('gastrointestinal', 'Disease', 'MESH:D005767', (33, 49)) ('NET', 'Gene', '2047', (187, 190)) ('NETs', 'Phenotype', 'HP:0100634', (26, 30)) ('pancreatic', 'Disease', 'MESH:D010195', (6, 16)) ('mutated', 'Var', (112, 119)) 117251 30140036 However, most high-grade NENs of the gastrointestinal tract are NECs, with mutations in TP53 and RB1 and, in the colon, APC mutations similar to those found in adenocarcinomas, which are not usually reported in NETs. ('NET', 'Gene', (211, 214)) ('APC', 'Disease', 'MESH:D011125', (120, 123)) ('APC', 'Disease', (120, 123)) ('TP53', 'Gene', '7157', (88, 92)) ('RB1', 'Gene', '5925', (97, 100)) ('high-grade NENs', 'Disease', (14, 29)) ('NEN', 'Phenotype', 'HP:0100634', (25, 28)) ('NETs', 'Phenotype', 'HP:0100634', (211, 215)) ('NET', 'Phenotype', 'HP:0100634', (211, 214)) ('colon', 'Disease', 'MESH:D015179', (113, 118)) ('carcinoma', 'Phenotype', 'HP:0030731', (165, 174)) ('colon', 'Disease', (113, 118)) ('NENs', 'Phenotype', 'HP:0100634', (25, 29)) ('adenocarcinomas', 'Disease', 'MESH:D000230', (160, 175)) ('TP53', 'Gene', (88, 92)) ('adenocarcinomas', 'Disease', (160, 175)) ('carcinomas', 'Phenotype', 'HP:0030731', (165, 175)) ('gastrointestinal tract', 'Disease', (37, 59)) ('mutations', 'Var', (124, 133)) ('RB1', 'Gene', (97, 100)) ('NEC', 'Phenotype', 'HP:0100634', (64, 67)) ('gastrointestinal tract', 'Disease', 'MESH:D004067', (37, 59)) ('mutations', 'Var', (75, 84)) ('NET', 'Gene', '2047', (211, 214)) 117252 30140036 As in PanNETs, there is a low overall incidence of mutations in gastrointestinal NETs; for example, small bowel NETs have an 8% incidence of CDNK1B mutations and few other recurrent mutations. ('NETs', 'Phenotype', 'HP:0100634', (9, 13)) ('NET', 'Gene', (9, 12)) ('NET', 'Phenotype', 'HP:0100634', (9, 12)) ('mutations', 'Var', (148, 157)) ('NET', 'Gene', (81, 84)) ('NET', 'Phenotype', 'HP:0100634', (81, 84)) ('small bowel', 'Disease', (100, 111)) ('gastrointestinal', 'Disease', (64, 80)) ('NET', 'Gene', (112, 115)) ('NETs', 'Phenotype', 'HP:0100634', (81, 85)) ('NETs', 'Phenotype', 'HP:0100634', (112, 116)) ('NET', 'Gene', '2047', (9, 12)) ('NET', 'Phenotype', 'HP:0100634', (112, 115)) ('CDNK1B', 'Gene', (141, 147)) ('NET', 'Gene', '2047', (112, 115)) ('NET', 'Gene', '2047', (81, 84)) ('gastrointestinal', 'Disease', 'MESH:D005767', (64, 80)) ('small bowel', 'Disease', 'MESH:D015212', (100, 111)) 117253 30140036 Instead, epigenetic dysregulation appears to have a major role in the pathogenesis of small bowel NETs. ('small bowel', 'Disease', (86, 97)) ('NETs', 'Phenotype', 'HP:0100634', (98, 102)) ('NET', 'Gene', (98, 101)) ('NET', 'Gene', '2047', (98, 101)) ('NET', 'Phenotype', 'HP:0100634', (98, 101)) ('small bowel', 'Disease', 'MESH:D015212', (86, 97)) ('epigenetic dysregulation', 'Var', (9, 33)) 117276 30140036 Global genomic studies have demonstrated extensive genetic alterations in SCLC and large cell carcinoma (including LCNEC), consisting of amplifications, deletions, and mutations in contrast to very few genetic changes in lung carcinoids. ('LCNEC', 'Phenotype', 'HP:0030360', (115, 120)) ('carcinoid', 'Phenotype', 'HP:0100570', (226, 235)) ('carcinoma', 'Phenotype', 'HP:0030731', (94, 103)) ('large cell carcinoma', 'Phenotype', 'HP:0030360', (83, 103)) ('lung carcinoids', 'Disease', 'MESH:D002276', (221, 236)) ('cell carcinoma', 'Disease', (89, 103)) ('carcinoids', 'Phenotype', 'HP:0100570', (226, 236)) ('LCNEC', 'Chemical', '-', (115, 120)) ('SCLC', 'Gene', '7864', (74, 78)) ('lung carcinoids', 'Disease', (221, 236)) ('SCLC', 'Gene', (74, 78)) ('mutations', 'Var', (168, 177)) ('lung carcinoids', 'Phenotype', 'HP:0030445', (221, 236)) ('SCLC', 'Phenotype', 'HP:0030357', (74, 78)) ('cell carcinoma', 'Disease', 'MESH:C538614', (89, 103)) ('NEC', 'Phenotype', 'HP:0100634', (117, 120)) ('deletions', 'Var', (153, 162)) 117278 30140036 In addition, SCLCs show inactivating mutations in NOTCH family genes in 25% of cases and in rare cases kinase gene mutations. ('inactivating mutations', 'Var', (24, 46)) ('NOTCH family genes', 'Gene', (50, 68)) ('SCLC', 'Gene', '7864', (13, 17)) ('SCLC', 'Phenotype', 'HP:0030357', (13, 17)) ('SCLC', 'Gene', (13, 17)) 117279 30140036 Several studies have shown that LCNECs are more genomically heterogeneous than SCLCs, with a group that is similar to SCLC, with biallelic inactivation of TP53 and RB1, and another group that is more non-small cell-like, with mutations in KRAS, STK11/KEAP1. ('SCLC', 'Gene', '7864', (79, 83)) ('SCLC', 'Gene', (79, 83)) ('LCNEC', 'Phenotype', 'HP:0030360', (32, 37)) ('STK11', 'Gene', '6794', (245, 250)) ('SCLC', 'Phenotype', 'HP:0030357', (118, 122)) ('RB1', 'Gene', (164, 167)) ('TP53', 'Gene', (155, 159)) ('SCLC', 'Gene', '7864', (118, 122)) ('SCLC', 'Gene', (118, 122)) ('KRAS', 'Gene', '3845', (239, 243)) ('LCNEC', 'Chemical', '-', (32, 37)) ('RB1', 'Gene', '5925', (164, 167)) ('NEC', 'Phenotype', 'HP:0100634', (34, 37)) ('KRAS', 'Gene', (239, 243)) ('mutations', 'Var', (226, 235)) ('STK11', 'Gene', (245, 250)) ('KEAP1', 'Gene', '9817', (251, 256)) ('SCLC', 'Phenotype', 'HP:0030357', (79, 83)) ('TP53', 'Gene', '7157', (155, 159)) ('biallelic', 'Var', (129, 138)) ('KEAP1', 'Gene', (251, 256)) 117280 30140036 In contrast, lung carcinoids lack mutations in TP53, RB1, KRAS, STK11/KEAP1, but show frequent mutations in chromatin-remodeling genes such as covalent histone modifiers in 40% and subunits of the SWI/SNF complex including the MEN1, PSIP1, and ARID1A genes in 22% of cases. ('TP53', 'Gene', (47, 51)) ('lung carcinoids', 'Disease', 'MESH:D002276', (13, 28)) ('carcinoids', 'Phenotype', 'HP:0100570', (18, 28)) ('ARID1A', 'Gene', '8289', (244, 250)) ('STK11', 'Gene', '6794', (64, 69)) ('PSIP1', 'Gene', (233, 238)) ('KRAS', 'Gene', '3845', (58, 62)) ('carcinoid', 'Phenotype', 'HP:0100570', (18, 27)) ('PSIP1', 'Gene', '11168', (233, 238)) ('RB1', 'Gene', (53, 56)) ('TP53', 'Gene', '7157', (47, 51)) ('mutations', 'Var', (95, 104)) ('lung carcinoids', 'Disease', (13, 28)) ('KRAS', 'Gene', (58, 62)) ('KEAP1', 'Gene', '9817', (70, 75)) ('MEN1', 'Gene', '4221', (227, 231)) ('KEAP1', 'Gene', (70, 75)) ('RB1', 'Gene', '5925', (53, 56)) ('lung carcinoids', 'Phenotype', 'HP:0030445', (13, 28)) ('STK11', 'Gene', (64, 69)) ('MEN1', 'Gene', (227, 231)) ('lack', 'NegReg', (29, 33)) ('ARID1A', 'Gene', (244, 250)) ('mutations', 'Var', (34, 43)) 117281 30140036 Rare cases of LCNEC with carcinoid-like genetic features such as MEN-1 mutations have been reported. ('NEC', 'Phenotype', 'HP:0100634', (16, 19)) ('LCNEC', 'Chemical', '-', (14, 19)) ('LCNEC', 'Disease', (14, 19)) ('carcinoid', 'Phenotype', 'HP:0100570', (25, 34)) ('MEN-1', 'Gene', '4221', (65, 70)) ('MEN-1', 'Gene', (65, 70)) ('LCNEC', 'Phenotype', 'HP:0030360', (14, 19)) ('mutations', 'Var', (71, 80)) 117295 30140036 There is some evidence that different mutations underlie tumors of different cell types. ('underlie', 'Reg', (48, 56)) ('tumor', 'Phenotype', 'HP:0002664', (57, 62)) ('tumors', 'Phenotype', 'HP:0002664', (57, 63)) ('tumors', 'Disease', (57, 63)) ('mutations', 'Var', (38, 47)) ('tumors', 'Disease', 'MESH:D009369', (57, 63)) 117296 30140036 For example, GNAS mutations may be implicated in the pathogenesis of densely granulated somatotroph/mammosomatotroph tumors, and USP8 mutations in densely granulated corticotroph tumors. ('tumors', 'Phenotype', 'HP:0002664', (117, 123)) ('somatotroph tumors', 'Phenotype', 'HP:0011760', (105, 123)) ('corticotroph tumors', 'Phenotype', 'HP:0008291', (166, 185)) ('tumors', 'Disease', 'MESH:D009369', (179, 185)) ('implicated', 'Reg', (35, 45)) ('somatotroph tumors', 'Disease', 'MESH:D049912', (105, 123)) ('tumor', 'Phenotype', 'HP:0002664', (117, 122)) ('GNAS', 'Gene', (13, 17)) ('somatotroph tumors', 'Disease', (105, 123)) ('tumors', 'Disease', (117, 123)) ('mutations', 'Var', (134, 143)) ('tumor', 'Phenotype', 'HP:0002664', (179, 184)) ('GNAS', 'Gene', '2778', (13, 17)) ('USP8', 'Gene', (129, 133)) ('tumors', 'Phenotype', 'HP:0002664', (179, 185)) ('USP8', 'Gene', '9101', (129, 133)) ('tumors', 'Disease', 'MESH:D009369', (117, 123)) ('tumors', 'Disease', (179, 185)) ('mutations', 'Var', (18, 27)) 117297 30140036 In contrast, AIP mutations may be implicated in some sparsely granulated somatotroph tumors with epigenetic silencing in those tumors without mutation. ('somatotroph tumors', 'Phenotype', 'HP:0011760', (73, 91)) ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('somatotroph tumors', 'Disease', (73, 91)) ('tumors', 'Disease', (127, 133)) ('tumors', 'Disease', 'MESH:D009369', (85, 91)) ('tumors', 'Phenotype', 'HP:0002664', (127, 133)) ('tumors', 'Disease', 'MESH:D009369', (127, 133)) ('epigenetic silencing', 'Var', (97, 117)) ('AIP', 'Gene', '9049', (13, 16)) ('implicated', 'Reg', (34, 44)) ('tumors', 'Phenotype', 'HP:0002664', (85, 91)) ('AIP', 'Gene', (13, 16)) ('somatotroph tumors', 'Disease', 'MESH:D049912', (73, 91)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('mutations', 'Var', (17, 26)) ('tumors', 'Disease', (85, 91)) 117298 30140036 Interestingly, MEN1 mutation in PitNETs is not specific to the cell type. ('NET', 'Gene', '2047', (35, 38)) ('mutation', 'Var', (20, 28)) ('MEN1', 'Gene', '4221', (15, 19)) ('MEN1', 'Gene', (15, 19)) ('NET', 'Gene', (35, 38)) ('NET', 'Phenotype', 'HP:0100634', (35, 38)) ('NETs', 'Phenotype', 'HP:0100634', (35, 39)) 117299 30140036 Early studies suggested that TP53 inactivation and RAS mutations were features of carcinomas. ('RAS', 'Gene', (51, 54)) ('inactivation', 'Var', (34, 46)) ('carcinoma', 'Phenotype', 'HP:0030731', (82, 91)) ('TP53', 'Gene', '7157', (29, 33)) ('TP53', 'Gene', (29, 33)) ('carcinomas', 'Phenotype', 'HP:0030731', (82, 92)) ('carcinomas', 'Disease', (82, 92)) ('carcinomas', 'Disease', 'MESH:D002277', (82, 92)) 117319 30140036 RET mutations influence the tumor microenvironment and angiogenesis, and among sporadic cases p.M918T RET has been linked to poor prognosis, compared to MTCs that are RAS mutated or without mutations. ('RET', 'Gene', '5979', (0, 3)) ('tumor', 'Disease', (28, 33)) ('RET', 'Gene', (102, 105)) ('p.M918T', 'Var', (94, 101)) ('RET', 'Gene', (0, 3)) ('influence', 'Reg', (14, 23)) ('p.M918T', 'Mutation', 'rs74799832', (94, 101)) ('RET', 'Gene', '5979', (102, 105)) ('tumor', 'Disease', 'MESH:D009369', (28, 33)) ('mutations', 'Var', (4, 13)) ('angiogenesis', 'CPA', (55, 67)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) 117329 30140036 Mitoses, atypical mitoses, macronucleoli, thick intersecting fibrous bands, and necrosis are potential signs of malignancy. ('macronucleoli', 'Var', (27, 40)) ('necrosis', 'Disease', (80, 88)) ('malignancy', 'Disease', 'MESH:D009369', (112, 122)) ('Mitoses', 'CPA', (0, 7)) ('necrosis', 'Disease', 'MESH:D009336', (80, 88)) ('malignancy', 'Disease', (112, 122)) 117332 30140036 The parafibromin gene (CDC73, previously HRPT2) is frequently inactivated in malignant tumors, and loss of function mutations are identified in the germline of patients with apparently sporadic parathyroid carcinoma (as well as in other CDC73 related disorders, such as hyperparathyroidism-jaw tumor syndrome and familial isolated hyperparathyroidism). ('tumor', 'Phenotype', 'HP:0002664', (87, 92)) ('sporadic parathyroid carcinoma', 'Disease', (185, 215)) ('familial isolated hyperparathyroidism', 'Disease', (313, 350)) ('malignant tumors', 'Disease', 'MESH:D018198', (77, 93)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (198, 215)) ('CDC73', 'Gene', (23, 28)) ('CDC73', 'Gene', '79577', (23, 28)) ('tumors', 'Phenotype', 'HP:0002664', (87, 93)) ('tumor', 'Phenotype', 'HP:0002664', (294, 299)) ('CDC73', 'Gene', (237, 242)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (331, 350)) ('CDC73', 'Gene', '79577', (237, 242)) ('parathyroid carcinoma', 'Phenotype', 'HP:0006780', (194, 215)) ('malignant tumors', 'Disease', (77, 93)) ('HRPT2', 'Gene', (41, 46)) ('HRPT2', 'Gene', '79577', (41, 46)) ('jaw tumor', 'Phenotype', 'HP:0030792', (290, 299)) ('familial isolated hyperparathyroidism', 'Disease', 'MESH:C564166', (313, 350)) ('parafibromin', 'Gene', (4, 16)) ('carcinoma', 'Phenotype', 'HP:0030731', (206, 215)) ('hyperparathyroidism-jaw tumor syndrome', 'Disease', (270, 308)) ('mutations', 'Var', (116, 125)) ('sporadic parathyroid carcinoma', 'Disease', 'MESH:D010282', (185, 215)) ('patients', 'Species', '9606', (160, 168)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (270, 289)) ('hyperparathyroidism-jaw tumor syndrome', 'Disease', 'MESH:C563273', (270, 308)) ('isolated hyperparathyroidism', 'Phenotype', 'HP:0008200', (322, 350)) ('parafibromin', 'Gene', '79577', (4, 16)) ('loss of function', 'NegReg', (99, 115)) 117335 30140036 A variety of genetic alterations including CCND1 amplification, alterations of the PI3K/AKT/mTOR pathway and overexpression of CCND1 (previously PRAD1) have been identified by high-throughput genetic screening in parathyroid carcinoma and adenoma. ('overexpression', 'PosReg', (109, 123)) ('CCND1', 'Gene', (43, 48)) ('mTOR', 'Gene', '2475', (92, 96)) ('parathyroid carcinoma', 'Disease', 'MESH:D010282', (213, 234)) ('adenoma', 'Disease', (239, 246)) ('AKT', 'Gene', '207', (88, 91)) ('PRAD1', 'Gene', (145, 150)) ('adenoma', 'Disease', 'MESH:D000236', (239, 246)) ('CCND1', 'Gene', '595', (127, 132)) ('alterations', 'Var', (64, 75)) ('CCND1', 'Gene', (127, 132)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (217, 234)) ('amplification', 'Var', (49, 62)) ('parathyroid carcinoma', 'Disease', (213, 234)) ('carcinoma', 'Phenotype', 'HP:0030731', (225, 234)) ('parathyroid carcinoma', 'Phenotype', 'HP:0006780', (213, 234)) ('mTOR', 'Gene', (92, 96)) ('AKT', 'Gene', (88, 91)) ('CCND1', 'Gene', '595', (43, 48)) ('PRAD1', 'Gene', '595', (145, 150)) 117370 30140036 In the ovary, the NEN types included in WHO 2014 are: (1) carcinoid tumor (sub-types of strumal and mucinous carcinoid), which is included in the category of monodermal teratoma and somatic-type tumors arising from a dermoid cyst; (2) small cell carcinoma, pulmonary type; the latter is essentially a SCNEC which is included in the category of miscellaneous tumors and must be distinguished from ovarian small cell carcinoma of hypercalcaemic type, a non-NEN associated with mutations in SMARCA4, and (3) paraganglioma which is included in the category of miscellaneous tumors. ('carcinoid', 'Phenotype', 'HP:0100570', (109, 118)) ('ovarian small', 'Phenotype', 'HP:0008724', (396, 409)) ('ovarian small cell carcinoma of hypercalcaemic type', 'Disease', 'MESH:D018288', (396, 447)) ('tumor', 'Phenotype', 'HP:0002664', (358, 363)) ('NEN', 'Phenotype', 'HP:0100634', (455, 458)) ('teratoma', 'Disease', 'MESH:D013724', (169, 177)) ('miscellaneous tumors', 'Disease', (556, 576)) ('carcinoid tumor', 'Disease', 'MESH:D002276', (58, 73)) ('tumor', 'Phenotype', 'HP:0002664', (570, 575)) ('paraganglioma', 'Disease', (505, 518)) ('small cell carcinoma', 'Phenotype', 'HP:0030357', (404, 424)) ('tumors', 'Phenotype', 'HP:0002664', (195, 201)) ('paraganglioma', 'Disease', 'MESH:D010235', (505, 518)) ('tumors', 'Phenotype', 'HP:0002664', (570, 576)) ('somatic-type tumors', 'Disease', 'MESH:C563610', (182, 201)) ('NEN', 'Phenotype', 'HP:0100634', (18, 21)) ('SMARCA4', 'Gene', '6597', (488, 495)) ('carcinoma', 'Phenotype', 'HP:0030731', (246, 255)) ('carcinoid', 'Phenotype', 'HP:0100570', (58, 67)) ('carcinoid tumor', 'Disease', (58, 73)) ('mucinous carcinoid', 'Disease', 'MESH:D002276', (100, 118)) ('tumor', 'Phenotype', 'HP:0002664', (195, 200)) ('somatic-type tumors', 'Disease', (182, 201)) ('teratoma', 'Disease', (169, 177)) ('mutations', 'Var', (475, 484)) ('small cell carcinoma', 'Phenotype', 'HP:0030357', (235, 255)) ('small cell carcinoma', 'Disease', (404, 424)) ('miscellaneous tumors', 'Disease', 'MESH:D009369', (344, 364)) ('paraganglioma', 'Phenotype', 'HP:0002668', (505, 518)) ('small cell carcinoma', 'Disease', 'MESH:D018288', (404, 424)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('NEC', 'Phenotype', 'HP:0100634', (303, 306)) ('mucinous carcinoid', 'Disease', (100, 118)) ('miscellaneous tumors', 'Disease', (344, 364)) ('SMARCA4', 'Gene', (488, 495)) ('small cell carcinoma', 'Disease', (235, 255)) ('teratoma', 'Phenotype', 'HP:0009792', (169, 177)) ('dermoid cyst', 'Phenotype', 'HP:0025247', (217, 229)) ('tumors', 'Phenotype', 'HP:0002664', (358, 364)) ('small cell carcinoma', 'Disease', 'MESH:D018288', (235, 255)) ('miscellaneous tumors', 'Disease', 'MESH:D009369', (556, 576)) ('carcinoma', 'Phenotype', 'HP:0030731', (415, 424)) 117396 30140036 Furthermore, a significant differential diagnosis with MCC is pulmonary type small cell carcinoma, and a variety of studies have emphasized the distinguishing histologic and immunophenotypic features of these two entities (11175640; 21453956). ('pulmonary type small cell carcinoma', 'Disease', (62, 97)) ('11175640', 'Var', (223, 231)) ('small cell carcinoma', 'Phenotype', 'HP:0030357', (77, 97)) ('carcinoma', 'Phenotype', 'HP:0030731', (88, 97)) ('pulmonary type small cell carcinoma', 'Disease', 'MESH:D018288', (62, 97)) 117422 30363222 A 31-year-old female from West Africa was referred to the hospital by her general practitioner following a blood test showing inflammation and anaemia (CRP 352 mg l-1 and Hb 7.2 g dl-1). ('anaemia', 'Disease', 'MESH:D000740', (143, 150)) ('anaemia', 'Disease', (143, 150)) ('anaemia', 'Phenotype', 'HP:0001903', (143, 150)) ('inflammation', 'Disease', 'MESH:D007249', (126, 138)) ('CRP 352 mg', 'Var', (152, 162)) ('inflammation', 'Disease', (126, 138)) 117443 30363222 During the operation, manipulation of the tumour triggered a sharp rise in blood pressure. ('blood pressure', 'MPA', (75, 89)) ('tumour', 'Phenotype', 'HP:0002664', (42, 48)) ('tumour', 'Disease', 'MESH:D009369', (42, 48)) ('manipulation', 'Var', (22, 34)) ('rise', 'PosReg', (67, 71)) ('tumour', 'Disease', (42, 48)) ('rise in blood pressure', 'Phenotype', 'HP:0032263', (67, 89)) 117472 30363222 Especially 68Ga DOTATATE PET-CT has been shown to have a higher sensitivity and uptake intensity compared to all other imaging modalities, and is a suitable first line investigation when a paraganglioma is suspected. ('sensitivity', 'MPA', (64, 75)) ('higher', 'PosReg', (57, 63)) ('paraganglioma', 'Phenotype', 'HP:0002668', (189, 202)) ('paraganglioma', 'Disease', 'MESH:D010235', (189, 202)) ('paraganglioma', 'Disease', (189, 202)) ('68Ga DOTATATE', 'Var', (11, 24)) ('uptake intensity', 'MPA', (80, 96)) 117630 28528867 A Pan-Cancer Proteogenomic Atlas of PI3K/AKT/mTOR Pathway Alterations Molecular alterations involving PI3K/AKT/mTOR pathway (including mutation, copy number, protein, or RNA) were examined across 11219 human cancers representing 32 major types. ('Pan-Cancer', 'Disease', (2, 12)) ('PI3K/AKT', 'Gene', (102, 110)) ('human', 'Species', '9606', (202, 207)) ('cancer', 'Phenotype', 'HP:0002664', (208, 214)) ('AKT', 'Gene', '207', (41, 44)) ('PI3K/AKT', 'Gene', '5295;207', (102, 110)) ('PI3K/AKT', 'Gene', (36, 44)) ('cancers', 'Phenotype', 'HP:0002664', (208, 215)) ('cancers', 'Disease', (208, 215)) ('PI3K/AKT', 'Gene', '5295;207', (36, 44)) ('AKT', 'Gene', (107, 110)) ('mTOR', 'Gene', (111, 115)) ('Pan-Cancer', 'Disease', 'MESH:C537931', (2, 12)) ('AKT', 'Gene', (41, 44)) ('mTOR', 'Gene', (45, 49)) ('mTOR', 'Gene', '2475', (111, 115)) ('cancers', 'Disease', 'MESH:D009369', (208, 215)) ('Cancer', 'Phenotype', 'HP:0002664', (6, 12)) ('copy number', 'Var', (145, 156)) ('mTOR', 'Gene', '2475', (45, 49)) ('AKT', 'Gene', '207', (107, 110)) 117632 28528867 In addition to mutation, structural variations and partial copy losses involving PTEN and STK11 showed evidence for having functional relevance. ('structural variations', 'Var', (25, 46)) ('STK11', 'Gene', (90, 95)) ('PTEN', 'Gene', (81, 85)) ('partial copy losses', 'Var', (51, 70)) ('STK11', 'Gene', '6794', (90, 95)) 117633 28528867 A substantial fraction of cancers showed high mTOR pathway activity without an associated canonical genetic or genomic alteration, including cancers harboring IDH1 or VHL mutations, suggesting multiple mechanisms for pathway activation. ('activity', 'MPA', (59, 67)) ('cancers', 'Disease', 'MESH:D009369', (141, 148)) ('cancers', 'Phenotype', 'HP:0002664', (26, 33)) ('IDH1', 'Gene', (159, 163)) ('VHL', 'Disease', (167, 170)) ('VHL', 'Disease', 'MESH:D006623', (167, 170)) ('cancer', 'Phenotype', 'HP:0002664', (141, 147)) ('cancers', 'Disease', 'MESH:D009369', (26, 33)) ('IDH1', 'Gene', '3417', (159, 163)) ('cancers', 'Disease', (26, 33)) ('cancer', 'Phenotype', 'HP:0002664', (26, 32)) ('cancers', 'Phenotype', 'HP:0002664', (141, 148)) ('mTOR pathway', 'Pathway', (46, 58)) ('mutations', 'Var', (171, 180)) ('cancers', 'Disease', (141, 148)) 117641 28528867 AKT is phosphorylated at Thr308 by PDK1 and at Ser473 by mTOR complex 2 (mTORC2), which increases its kinase activity. ('mTORC2', 'Gene', '74343', (73, 79)) ('mTORC2', 'Gene', (73, 79)) ('Thr308', 'Chemical', '-', (25, 31)) ('Ser473', 'Chemical', '-', (47, 53)) ('AKT', 'Pathway', (0, 3)) ('increases', 'PosReg', (88, 97)) ('kinase activity', 'MPA', (102, 117)) ('PDK1', 'Gene', '5163', (35, 39)) ('Thr308', 'Var', (25, 31)) ('PDK1', 'Gene', (35, 39)) 117649 28528867 PIK3R1 and less commonly PIK3R2, which encode the p85alpha and p85beta regulatory subunits of PI3K, are commonly mutated, resulting in reduced ability to inhibit PI3K p110a. ('p85beta', 'Gene', (63, 70)) ('PI3', 'Gene', (94, 97)) ('PI3', 'Gene', (162, 165)) ('PIK3R2', 'Gene', (25, 31)) ('PIK3R2', 'Gene', '5296', (25, 31)) ('p110a', 'Gene', (167, 172)) ('ability', 'MPA', (143, 150)) ('inhibit', 'NegReg', (154, 161)) ('PIK3R1', 'Gene', (0, 6)) ('p85alpha', 'Gene', '5295', (50, 58)) ('p85beta', 'Gene', '5296', (63, 70)) ('PI3', 'Gene', '5266', (94, 97)) ('PI3', 'Gene', '5266', (162, 165)) ('reduced', 'NegReg', (135, 142)) ('mutated', 'Var', (113, 120)) ('p110a', 'Gene', '5290', (167, 172)) ('p85alpha', 'Gene', (50, 58)) 117651 28528867 AKT1 is occasionally activated by mutation at a single site, E17K. ('E17K', 'Var', (61, 65)) ('AKT1', 'Gene', '207', (0, 4)) ('AKT1', 'Gene', (0, 4)) ('activated', 'PosReg', (21, 30)) ('E17K', 'Mutation', 'rs121434592', (61, 65)) 117652 28528867 Inactivating mutations in both TSC1 and TSC2 have been identified in cancer at low frequency, as well as activating mutations in MTOR . ('cancer', 'Disease', 'MESH:D009369', (69, 75)) ('MTOR', 'Gene', (129, 133)) ('cancer', 'Phenotype', 'HP:0002664', (69, 75)) ('Inactivating mutations', 'Var', (0, 22)) ('TSC2', 'Gene', '7249', (40, 44)) ('MTOR', 'Gene', '2475', (129, 133)) ('TSC1', 'Gene', '7248', (31, 35)) ('TSC2', 'Gene', (40, 44)) ('TSC1', 'Gene', (31, 35)) ('cancer', 'Disease', (69, 75)) 117653 28528867 RHEB mutations are rare but focal at Y35, suggesting a driver effect. ('RHEB', 'Gene', '6009', (0, 4)) ('Y35', 'Var', (37, 40)) ('RHEB', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) 117673 28528867 With the notable exception of AKT3, copy number alterations of PI3K/AKT/mTOR pathway member genes were highly correlated with their mRNA expression (Figure S2A). ('mRNA expression', 'MPA', (132, 147)) ('AKT3', 'Gene', '10000', (30, 34)) ('correlated', 'Reg', (110, 120)) ('AKT3', 'Gene', (30, 34)) ('PI3K/AKT', 'Gene', (63, 71)) ('copy number alterations', 'Var', (36, 59)) ('PI3K/AKT', 'Gene', '5295;207', (63, 71)) 117676 28528867 Out of 1363 cases with WGS data available (1218 by low-pass sequencing), 63 cases (~5%) harbored a rearrangement within pathway suppressor genes PTEN (39 cases), INPP4B (14), STK11 (5), TSC1 (2), TSC2 (2), PIK3R1 (2), or PPP2R1A (2)(Figure 2C). ('PTEN', 'Gene', (145, 149)) ('rearrangement', 'Var', (99, 112)) ('TSC1', 'Gene', (186, 190)) ('STK11', 'Gene', (175, 180)) ('PIK3R1', 'Gene', (206, 212)) ('PPP2R1A', 'Gene', (221, 228)) ('INPP4B', 'Gene', '8821', (162, 168)) ('STK11', 'Gene', '6794', (175, 180)) ('PPP2R1A', 'Gene', '5518', (221, 228)) ('INPP4B', 'Gene', (162, 168)) ('TSC1', 'Gene', '7248', (186, 190)) ('TSC2', 'Gene', '7249', (196, 200)) ('TSC2', 'Gene', (196, 200)) 117677 28528867 By structural variation (SV), copy loss (partial or total), or mutation, PTEN was found altered in 40% of cancers with both RPPA and WGS data, with PTEN protein expression most impacted in tumors with SV, homozygous loss, or nonsense/indel/frameshift mutations (Figure 2D). ('copy loss', 'Var', (30, 39)) ('PTEN', 'Gene', (148, 152)) ('cancers', 'Phenotype', 'HP:0002664', (106, 113)) ('cancers', 'Disease', (106, 113)) ('altered', 'Reg', (88, 95)) ('impacted', 'Reg', (177, 185)) ('tumor', 'Phenotype', 'HP:0002664', (189, 194)) ('cancer', 'Phenotype', 'HP:0002664', (106, 112)) ('expression', 'MPA', (161, 171)) ('tumors', 'Phenotype', 'HP:0002664', (189, 195)) ('SV', 'Disease', 'None', (201, 203)) ('PTEN', 'Gene', (73, 77)) ('SV', 'Disease', 'None', (25, 27)) ('tumors', 'Disease', (189, 195)) ('mutation', 'Var', (63, 71)) ('homozygous loss', 'Var', (205, 220)) ('cancers', 'Disease', 'MESH:D009369', (106, 113)) ('nonsense/indel/frameshift mutations', 'Var', (225, 260)) ('protein', 'Protein', (153, 160)) ('tumors', 'Disease', 'MESH:D009369', (189, 195)) 117679 28528867 Furthermore, high-level and low-level copy number loss for several pathway genes were strongly correlated with reduced mRNA levels (Figure S2B), and 20 cases harbored candidate gene fusions involving PIK3CA, AKT1, AKT2, AKT3, or MTOR (Figure S2C and Table S3). ('AKT3', 'Gene', '10000', (220, 224)) ('MTOR', 'Gene', (229, 233)) ('harbored', 'Reg', (158, 166)) ('mRNA levels', 'MPA', (119, 130)) ('loss', 'NegReg', (50, 54)) ('AKT2', 'Gene', (214, 218)) ('copy number', 'Var', (38, 49)) ('reduced', 'NegReg', (111, 118)) ('AKT1', 'Gene', '207', (208, 212)) ('PIK3CA', 'Gene', (200, 206)) ('AKT2', 'Gene', '208', (214, 218)) ('MTOR', 'Gene', '2475', (229, 233)) ('fusions', 'Reg', (182, 189)) ('AKT1', 'Gene', (208, 212)) ('AKT3', 'Gene', (220, 224)) 117680 28528867 A large proportion of mutations identified in driver genes that activate PI3K/AKT/mTOR are of low occurrence, highlighting the need to functionally annotate the long tail of infrequent mutations present in heterogeneous cancers . ('cancer', 'Phenotype', 'HP:0002664', (220, 226)) ('PI3K/AKT', 'Gene', '5295;207', (73, 81)) ('cancers', 'Phenotype', 'HP:0002664', (220, 227)) ('mutations', 'Var', (22, 31)) ('long tail', 'Phenotype', 'HP:0002831', (161, 170)) ('cancers', 'Disease', (220, 227)) ('cancers', 'Disease', 'MESH:D009369', (220, 227)) ('PI3K/AKT', 'Gene', (73, 81)) 117681 28528867 For example, PIK3CA is the gene most commonly activated by mutation in the cancer genome, with mutations being most frequent at positions E542, E545, and H1047 (Figure 3A); on the other hand, 13% of PIK3CA mutations observed occurred in a single case and showed no significant pattern of occurrence. ('mutations', 'Var', (206, 215)) ('E545', 'Var', (144, 148)) ('PIK3CA', 'Gene', (199, 205)) ('cancer', 'Disease', 'MESH:D009369', (75, 81)) ('cancer', 'Disease', (75, 81)) ('H1047', 'Var', (154, 159)) ('cancer', 'Phenotype', 'HP:0002664', (75, 81)) ('E542', 'Var', (138, 142)) 117682 28528867 Somatic copy alteration represents another potential mechanism for altering gene function, where for example, amplification of PIK3CA impacts p110alpha protein expression (Figure 3B). ('p110alpha', 'Gene', (142, 151)) ('impacts', 'Reg', (134, 141)) ('amplification', 'Var', (110, 123)) ('PIK3CA', 'Gene', (127, 133)) ('p110alpha', 'Gene', '5290', (142, 151)) 117683 28528867 Previous pan-cancer sequence analyses have identified recurrent mutational hotspots, where such hotspots would presumably have greater impact on protein function. ('cancer', 'Disease', (13, 19)) ('cancer', 'Disease', 'MESH:D009369', (13, 19)) ('mutational', 'Var', (65, 75)) ('cancer', 'Phenotype', 'HP:0002664', (13, 19)) 117684 28528867 In the case of PIK3CA, 73% of somatic, nonsilent mutation variants identified in TCGA pan-cancer cohort involved a hotspot residue as identified by Chang et al., while 13% of PIK3R1 mutations and 7% of MTOR mutations involved a hotspot residue (Figure 3C). ('MTOR', 'Gene', '2475', (202, 206)) ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('variants', 'Var', (58, 66)) ('hotspot', 'MPA', (115, 122)) ('involved', 'Reg', (217, 225)) ('mutations', 'Var', (207, 216)) ('involved', 'Reg', (104, 112)) ('MTOR', 'Gene', (202, 206)) ('cancer', 'Disease', (90, 96)) ('cancer', 'Disease', 'MESH:D009369', (90, 96)) ('mutations', 'Var', (182, 191)) ('PIK3R1', 'Gene', (175, 181)) 117686 28528867 For each of the genes considered (AKT1, MTOR, PIK3CA, PIK3R1, PTEN), tumors harboring mutations that were predicted to have functional effects had elevated phospho-AKT levels on average, as compared to tumors that did not harbor an alteration; in addition, tumors with mutations not predicted to be functional showed either a lesser effect or no significant effect on phospho-AKT. ('tumors', 'Disease', 'MESH:D009369', (257, 263)) ('tumors', 'Disease', 'MESH:D009369', (202, 208)) ('elevated', 'PosReg', (147, 155)) ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('MTOR', 'Gene', (40, 44)) ('tumors', 'Phenotype', 'HP:0002664', (69, 75)) ('MTOR', 'Gene', '2475', (40, 44)) ('mutations', 'Var', (86, 95)) ('AKT1', 'Gene', '207', (34, 38)) ('tumors', 'Phenotype', 'HP:0002664', (202, 208)) ('phospho-AKT levels', 'MPA', (156, 174)) ('tumors', 'Phenotype', 'HP:0002664', (257, 263)) ('tumors', 'Disease', (69, 75)) ('tumor', 'Phenotype', 'HP:0002664', (257, 262)) ('tumor', 'Phenotype', 'HP:0002664', (202, 207)) ('AKT1', 'Gene', (34, 38)) ('tumors', 'Disease', (257, 263)) ('tumors', 'Disease', (202, 208)) ('tumors', 'Disease', 'MESH:D009369', (69, 75)) 117688 28528867 Using MCF10A and Ba/F3 cells, 69 different nonsilent PIK3CA mutation variants were functionally assessed in vitro for their activating potential (Figures 4A and S4 and Table S5). ('MCF10A', 'CellLine', 'CVCL:0598', (6, 12)) ('variants', 'Var', (69, 77)) ('activating potential', 'MPA', (124, 144)) ('mutation variants', 'Var', (60, 77)) ('PIK3CA', 'Gene', (53, 59)) 117689 28528867 When the results of the functional studies were aligned with data from TCGA, a significant trend was observed for both PIK3CA and PIK3R1, whereby variants that were associated with functionality in vitro had a higher frequency of occurrence in human tumors (Figure 4C), suggesting that natural selection favored tumor development for those variants with greater functional effects. ('human', 'Species', '9606', (244, 249)) ('PIK3CA', 'Gene', (119, 125)) ('tumor', 'Disease', 'MESH:D009369', (312, 317)) ('tumors', 'Disease', 'MESH:D009369', (250, 256)) ('tumor', 'Disease', 'MESH:D009369', (250, 255)) ('tumor', 'Phenotype', 'HP:0002664', (312, 317)) ('tumors', 'Phenotype', 'HP:0002664', (250, 256)) ('variants', 'Var', (146, 154)) ('tumor', 'Phenotype', 'HP:0002664', (250, 255)) ('favored', 'PosReg', (304, 311)) ('tumor', 'Disease', (312, 317)) ('higher', 'PosReg', (210, 216)) ('tumors', 'Disease', (250, 256)) ('tumor', 'Disease', (250, 255)) ('PIK3R1', 'Gene', (130, 136)) 117690 28528867 Most variants showing some functionality also had higher phospho-AKT on average, as compared to tumors with the corresponding wild-type gene (Figures 4A and 4B), though variants associated with higher phospho-AKT were not necessarily associated with higher phospho-TSC2 (downstream in the pathway from AKT). ('higher', 'PosReg', (194, 200)) ('higher', 'PosReg', (50, 56)) ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('phospho-AKT', 'MPA', (201, 212)) ('tumors', 'Disease', (96, 102)) ('phospho-AKT', 'MPA', (57, 68)) ('tumors', 'Phenotype', 'HP:0002664', (96, 102)) ('TSC2', 'Gene', '7249', (265, 269)) ('TSC2', 'Gene', (265, 269)) ('tumors', 'Disease', 'MESH:D009369', (96, 102)) ('variants', 'Var', (5, 13)) ('variants', 'Var', (169, 177)) 117693 28528867 MTOR, RPTOR) resulted in gene signature patterns inversely correlated to those of our PI3K/AKT/mTOR signature, while knockdown of pathway suppressors (e.g. ('PI3K/AKT', 'Gene', (86, 94)) ('RPTOR', 'Gene', (6, 11)) ('PI3K/AKT', 'Gene', '5295;207', (86, 94)) ('RPTOR', 'Gene', '57521', (6, 11)) ('MTOR', 'Gene', (0, 4)) ('knockdown', 'Var', (117, 126)) ('MTOR', 'Gene', '2475', (0, 4)) 117695 28528867 Notably, knockdown of MYC and KRAS also suppressed the PI3K/AKT/mTOR signature; furthermore, when scoring TCGA pan-cancer mRNA profiles for pre-defined signatures of PI3K/AKT/mTOR, MYC, and k-ras, cancers scoring high for PI3K/AKT/mTOR also tended to score high for MYC and k-ras (Figures 5C, S5A, and S5B), suggesting that multiple oncogenic signaling pathways may converge on similar sets of transcriptional targets. ('MYC', 'Gene', '4609', (22, 25)) ('cancer', 'Disease', 'MESH:D009369', (197, 203)) ('cancers', 'Disease', 'MESH:D009369', (197, 204)) ('PI3K/AKT', 'Gene', '5295;207', (55, 63)) ('PI3K/AKT', 'Gene', (222, 230)) ('PI3K/AKT', 'Gene', '5295;207', (166, 174)) ('k-ras', 'Gene', (190, 195)) ('MYC', 'Gene', '4609', (181, 184)) ('KRAS', 'Gene', (30, 34)) ('PI3K/AKT', 'Gene', '5295;207', (222, 230)) ('cancer', 'Disease', 'MESH:D009369', (115, 121)) ('suppressed', 'NegReg', (40, 50)) ('MYC', 'Gene', '4609', (266, 269)) ('S5B', 'Gene', (302, 305)) ('k-ras', 'Gene', '3845', (274, 279)) ('KRAS', 'Gene', '3845', (30, 34)) ('knockdown', 'Var', (9, 18)) ('cancers', 'Phenotype', 'HP:0002664', (197, 204)) ('cancer', 'Disease', (197, 203)) ('cancers', 'Disease', (197, 204)) ('MYC', 'Gene', (22, 25)) ('cancer', 'Phenotype', 'HP:0002664', (197, 203)) ('k-ras', 'Gene', (274, 279)) ('high', 'Reg', (257, 261)) ('MYC', 'Gene', (181, 184)) ('cancer', 'Disease', (115, 121)) ('cancer', 'Phenotype', 'HP:0002664', (115, 121)) ('S5B', 'Gene', '5711', (302, 305)) ('k-ras', 'Gene', '3845', (190, 195)) ('MYC', 'Gene', (266, 269)) ('PI3K/AKT', 'Gene', (55, 63)) ('PI3K/AKT', 'Gene', (166, 174)) 117709 28528867 Features significantly associated with worse patient outcome, independent of cancer type, included STK11 mutation, STK11 copy loss, PTEN copy loss, PIK3CA amplification, and higher phospho-4EBP1 expression. ('4EBP1', 'Gene', (189, 194)) ('amplification', 'Var', (155, 168)) ('mutation', 'Var', (105, 113)) ('STK11', 'Gene', (99, 104)) ('cancer', 'Disease', (77, 83)) ('cancer', 'Disease', 'MESH:D009369', (77, 83)) ('PTEN copy loss', 'Disease', (132, 146)) ('higher', 'PosReg', (174, 180)) ('patient', 'Species', '9606', (45, 52)) ('STK11', 'Gene', (115, 120)) ('PTEN copy loss', 'Disease', 'MESH:D006223', (132, 146)) ('STK11', 'Gene', '6794', (99, 104)) ('PIK3CA', 'Gene', (148, 154)) ('4EBP1', 'Gene', '1978', (189, 194)) ('cancer', 'Phenotype', 'HP:0002664', (77, 83)) ('copy', 'Var', (121, 125)) ('STK11', 'Gene', '6794', (115, 120)) 117710 28528867 Focusing on PTEN and STK11 copy alterations, these features were found significant within several individual cancer types, with the aggregated patterns across cancer types denoting pan-cancer significance (Figure 6B). ('cancer', 'Disease', (159, 165)) ('significant', 'Reg', (71, 82)) ('cancer', 'Disease', 'MESH:D009369', (109, 115)) ('cancer', 'Phenotype', 'HP:0002664', (185, 191)) ('cancer', 'Phenotype', 'HP:0002664', (159, 165)) ('cancer', 'Disease', (109, 115)) ('STK11', 'Gene', (21, 26)) ('PTEN', 'Gene', (12, 16)) ('copy alterations', 'Var', (27, 43)) ('cancer', 'Disease', 'MESH:D009369', (185, 191)) ('STK11', 'Gene', '6794', (21, 26)) ('cancer', 'Phenotype', 'HP:0002664', (109, 115)) ('cancer', 'Disease', 'MESH:D009369', (159, 165)) ('cancer', 'Disease', (185, 191)) 117711 28528867 Interestingly, for both PTEN and STK11, low level deletion (approximating partial copy loss) but not high level deletion (approximating total loss) was associated with significantly worse outcome compared to wild-type (Figures 6C and 6D); loss of one copy combined with somatic mutation of the other copy was associated with the poorest outcome. ('loss', 'Var', (239, 243)) ('STK11', 'Gene', (33, 38)) ('PTEN', 'Gene', (24, 28)) ('STK11', 'Gene', '6794', (33, 38)) 117712 28528867 For both PTEN and STK11, neither high-level deletion nor mutation without copy loss could be associated with worse outcome, where in this instance, survival differences by tumor type were a likely confounder (e.g. ('tumor', 'Phenotype', 'HP:0002664', (172, 177)) ('PTEN', 'Gene', (9, 13)) ('tumor', 'Disease', (172, 177)) ('deletion', 'Var', (44, 52)) ('STK11', 'Gene', (18, 23)) ('STK11', 'Gene', '6794', (18, 23)) ('tumor', 'Disease', 'MESH:D009369', (172, 177)) 117713 28528867 65% of the PTEN mutation with no copy alteration group were UCEC:or uterine corpus endometrial carcinoma:cases). ('PTEN', 'Gene', (11, 15)) ('mutation', 'Var', (16, 24)) ('endometrial carcinoma', 'Disease', 'MESH:D016889', (83, 104)) ('endometrial carcinoma', 'Disease', (83, 104)) ('UCEC', 'Disease', (60, 64)) ('carcinoma', 'Phenotype', 'HP:0030731', (95, 104)) ('endometrial carcinoma', 'Phenotype', 'HP:0012114', (83, 104)) 117715 28528867 We then sought to examine the effects on pathway activation of some key genomic events in the tumors in which they occurred (including mutations represented in Figure 2A and copy alterations involving PIK3CA, PTEN, and STK11). ('tumor', 'Phenotype', 'HP:0002664', (94, 99)) ('mutations', 'Var', (135, 144)) ('copy alterations', 'Var', (174, 190)) ('STK11', 'Gene', (219, 224)) ('tumors', 'Disease', (94, 100)) ('tumors', 'Disease', 'MESH:D009369', (94, 100)) ('PIK3CA', 'Gene', (201, 207)) ('tumors', 'Phenotype', 'HP:0002664', (94, 100)) ('STK11', 'Gene', '6794', (219, 224)) ('PTEN', 'Gene', (209, 213)) 117716 28528867 Of the 7099 tumor cases examined (with both mutation and protein data), 4468 (63%) harbored at least one nonsilent somatic mutation or copy alteration involving PI3K/AKT/mTOR pathway (Figures 7A and S6A). ('tumor', 'Disease', 'MESH:D009369', (12, 17)) ('tumor', 'Phenotype', 'HP:0002664', (12, 17)) ('PI3K/AKT', 'Gene', (161, 169)) ('tumor', 'Disease', (12, 17)) ('PI3K/AKT', 'Gene', '5295;207', (161, 169)) ('copy alteration', 'Var', (135, 150)) 117718 28528867 In comparison to a set of tumors that did not show pathway alteration at the DNA or protein level (an "unaligned" set, n=1058), mutation or copy alteration of individual PI3K/AKT/mTOR pathway members in general could be associated with higher PI3K/AKT or mTOR signaling as measured by protein arrays (Figures 7B and S6B). ('PI3K/AKT', 'Gene', (170, 178)) ('higher', 'PosReg', (236, 242)) ('copy alteration', 'Var', (140, 155)) ('PI3K/AKT', 'Gene', (243, 251)) ('mTOR signaling', 'Pathway', (255, 269)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('tumors', 'Phenotype', 'HP:0002664', (26, 32)) ('PI3K/AKT', 'Gene', '5295;207', (170, 178)) ('tumors', 'Disease', 'MESH:D009369', (26, 32)) ('mutation', 'Var', (128, 136)) ('PI3K/AKT', 'Gene', '5295;207', (243, 251)) ('tumors', 'Disease', (26, 32)) 117719 28528867 Notably, STK11 alteration or low phospho-AMPK was strongly associated with high mTOR signaling but not with high PI3K/AKT signaling, consistent with the LKB1/AMPK pathway acting on mTOR independently of PI3K/AKT (Figure 2A). ('PI3K/AKT', 'Gene', '5295;207', (113, 121)) ('PI3K/AKT', 'Gene', '5295;207', (203, 211)) ('STK11', 'Gene', '6794', (9, 14)) ('low', 'Var', (29, 32)) ('PI3K/AKT', 'Gene', (113, 121)) ('AMPK', 'Gene', '5562', (158, 162)) ('associated', 'Reg', (59, 69)) ('PI3K/AKT', 'Gene', (203, 211)) ('AMPK', 'Gene', '5562', (41, 45)) ('LKB1', 'Gene', (153, 157)) ('high mTOR signaling', 'MPA', (75, 94)) ('AMPK', 'Gene', (41, 45)) ('AMPK', 'Gene', (158, 162)) ('STK11', 'Gene', (9, 14)) ('LKB1', 'Gene', '6794', (153, 157)) ('alteration', 'Var', (15, 25)) 117720 28528867 Mutations associated with Receptor Tyrosine Kinase (RTK) signaling were not strongly associated with PI3K/AKT/mTOR activation (Figures 7A and 7B), indicative of decoupling between PI3K/AKT/mTOR and RTK. ('PI3K/AKT', 'Gene', (101, 109)) ('RTK', 'Gene', '5979', (198, 201)) ('RTK', 'Gene', (52, 55)) ('Receptor Tyrosine Kinase', 'Gene', (26, 50)) ('PI3K/AKT', 'Gene', '5295;207', (180, 188)) ('PI3K/AKT', 'Gene', '5295;207', (101, 109)) ('Mutations', 'Var', (0, 9)) ('RTK', 'Gene', '5979', (52, 55)) ('RTK', 'Gene', (198, 201)) ('Receptor Tyrosine Kinase', 'Gene', '5979', (26, 50)) ('PI3K/AKT', 'Gene', (180, 188)) 117721 28528867 Low-level as well as high-level copy losses of PTEN and STK11 could be associated with greater mTOR signaling. ('greater', 'PosReg', (87, 94)) ('STK11', 'Gene', (56, 61)) ('PTEN', 'Gene', (47, 51)) ('mTOR signaling', 'MPA', (95, 109)) ('STK11', 'Gene', '6794', (56, 61)) ('copy losses', 'Var', (32, 43)) 117722 28528867 PI3K/AKT/mTOR pathway activity, when measured at the protein level, was explained by known mutations or copy alteration in most but not all of the cases examined, suggesting additional, unexplained or underappreciated mechanisms of pathway activation. ('PI3K/AKT', 'Gene', '5295;207', (0, 8)) ('copy alteration', 'Var', (104, 119)) ('mutations', 'Var', (91, 100)) ('PI3K/AKT', 'Gene', (0, 8)) ('activity', 'MPA', (22, 30)) 117723 28528867 Focusing on the "High P-AKT" tumor group (n=764), with high phospho-AKT but lacking a DNA alteration classically associated with PI3K/AKT activation, these tumors were highly enriched for specific cancer types including LGG, PRAD, KIRC, and PCPG (Figure 7C), as well as for IDH1 mutations (associated primarily with LGG, i.e. ('cancer', 'Disease', 'MESH:D009369', (197, 203)) ('PRAD', 'Disease', (225, 229)) ('P-AKT" tumor', 'Disease', (22, 34)) ('mutations', 'Var', (279, 288)) ('P-AKT" tumor', 'Disease', 'MESH:C000656865', (22, 34)) ('LGG', 'Disease', (316, 319)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('tumors', 'Phenotype', 'HP:0002664', (156, 162)) ('KIRC', 'Disease', (231, 235)) ('LGG', 'Disease', (220, 223)) ('PI3K/AKT', 'Gene', (129, 137)) ('cancer', 'Disease', (197, 203)) ('IDH1', 'Gene', (274, 278)) ('tumor', 'Phenotype', 'HP:0002664', (156, 161)) ('cancer', 'Phenotype', 'HP:0002664', (197, 203)) ('PI3K/AKT', 'Gene', '5295;207', (129, 137)) ('tumors', 'Disease', (156, 162)) ('PCPG', 'Disease', (241, 245)) ('IDH1', 'Gene', '3417', (274, 278)) ('tumors', 'Disease', 'MESH:D009369', (156, 162)) 117724 28528867 gliomas) and VHL mutations (associated with renal cancers). ('renal cancers', 'Disease', (44, 57)) ('VHL', 'Disease', (13, 16)) ('VHL', 'Disease', 'MESH:D006623', (13, 16)) ('cancers', 'Phenotype', 'HP:0002664', (50, 57)) ('associated', 'Reg', (28, 38)) ('glioma', 'Phenotype', 'HP:0009733', (0, 6)) ('renal cancers', 'Disease', 'MESH:D007680', (44, 57)) ('gliomas', 'Disease', (0, 7)) ('cancer', 'Phenotype', 'HP:0002664', (50, 56)) ('gliomas', 'Disease', 'MESH:D005910', (0, 7)) ('mutations', 'Var', (17, 26)) ('gliomas', 'Phenotype', 'HP:0009733', (0, 7)) 117726 28528867 These mutations and proteins would suggest a model (Figure 7E), whereby mutant IDH1 may lead to high phospho-ERK, and SRC can activate PI3K and where activated mTOR signaling may activate transcription targets of hypoxia via HIF-1alpha (particularly in the absence of VHL), including NDRG1 and growth factors that may lead to a further increase ERK and PI3K signaling. ('NDRG1', 'Gene', (285, 290)) ('PI3', 'Gene', (354, 357)) ('activate', 'PosReg', (126, 134)) ('hypoxia via HIF-1alpha', 'Disease', (214, 236)) ('VHL', 'Disease', 'MESH:D006623', (269, 272)) ('activate', 'PosReg', (180, 188)) ('IDH1', 'Gene', (79, 83)) ('ERK', 'Gene', (346, 349)) ('SRC', 'Gene', '6714', (118, 121)) ('mutant', 'Var', (72, 78)) ('PI3', 'Gene', '5266', (135, 138)) ('IDH1', 'Gene', '3417', (79, 83)) ('increase', 'PosReg', (337, 345)) ('SRC', 'Gene', (118, 121)) ('ERK', 'Gene', '5594', (109, 112)) ('VHL', 'Disease', (269, 272)) ('PI3', 'Gene', '5266', (354, 357)) ('NDRG1', 'Gene', '10397', (285, 290)) ('hypoxia via HIF-1alpha', 'Disease', 'MESH:D000860', (214, 236)) ('PI3', 'Gene', (135, 138)) ('ERK', 'Gene', '5594', (346, 349)) ('ERK', 'Gene', (109, 112)) 117727 28528867 Notably, VHL was recently found to directly suppress AKT activity, and generation of 2-hydroxyglutarate (2HG) by mutated IDH1/2 was also recently found to lead to the activation of mTOR; our data here would highlight the importance of both of the above relationships in the setting of human cancer. ('mTOR', 'Pathway', (181, 185)) ('cancer', 'Disease', (291, 297)) ('IDH1/2', 'Gene', '3417;3418', (121, 127)) ('AKT', 'Pathway', (53, 56)) ('cancer', 'Disease', 'MESH:D009369', (291, 297)) ('activation', 'PosReg', (167, 177)) ('human', 'Species', '9606', (285, 290)) ('suppress', 'NegReg', (44, 52)) ('mutated', 'Var', (113, 120)) ('2-hydroxyglutarate', 'Chemical', 'MESH:C019417', (85, 103)) ('IDH1/2', 'Gene', (121, 127)) ('VHL', 'Disease', 'MESH:D006623', (9, 12)) ('VHL', 'Disease', (9, 12)) ('cancer', 'Phenotype', 'HP:0002664', (291, 297)) 117732 28528867 Most of the correlations observed in our study fit well with our understanding of PI3K/AKT/mTOR signaling, in particular the genetic or genomic alteration of specific genes having an impact on phospho-protein expression of key downstream intermediates. ('PI3K/AKT', 'Gene', (82, 90)) ('alteration', 'Var', (144, 154)) ('impact', 'Reg', (183, 189)) ('PI3K/AKT', 'Gene', '5295;207', (82, 90)) ('phospho-protein expression', 'MPA', (193, 219)) 117734 28528867 Where gene mutation often inactivates one allele, loss of one allele by copy alteration, which is common across multiple cancer types for both PTEN and STK11, would presumably have the same impact on loss of gene function. ('cancer', 'Phenotype', 'HP:0002664', (121, 127)) ('loss', 'NegReg', (50, 54)) ('copy alteration', 'Var', (72, 87)) ('inactivates', 'NegReg', (26, 37)) ('STK11', 'Gene', (152, 157)) ('cancer', 'Disease', 'MESH:D009369', (121, 127)) ('mutation', 'Var', (11, 19)) ('cancer', 'Disease', (121, 127)) ('STK11', 'Gene', '6794', (152, 157)) 117735 28528867 IDH1 and VHL mutations would also be implicated here with PI3K/AKT/mTOR, where such alterations were associated with particularly high AKT/mTOR signaling, and which genes might be put forth for consideration as part of the "canon" of what would be recognized to constitute the core standard model of PI3K/AKT/mTOR pathway. ('IDH1', 'Gene', '3417', (0, 4)) ('PI3K/AKT', 'Gene', '5295;207', (300, 308)) ('PI3K/AKT', 'Gene', '5295;207', (58, 66)) ('implicated', 'Reg', (37, 47)) ('mutations', 'Var', (13, 22)) ('high', 'PosReg', (130, 134)) ('associated', 'Reg', (101, 111)) ('AKT/mTOR signaling', 'MPA', (135, 153)) ('IDH1', 'Gene', (0, 4)) ('PI3K/AKT', 'Gene', (58, 66)) ('VHL', 'Disease', 'MESH:D006623', (9, 12)) ('VHL', 'Disease', (9, 12)) ('PI3K/AKT', 'Gene', (300, 308)) 117744 28528867 Results of this study include a comprehensive and annotated catalog of PI3K/AKT/mTOR-associated variants across over 10,000 tumors, which may serve as an additional resource for assessing variants in the clinical setting. ('000 tumors', 'Disease', 'MESH:D009369', (120, 130)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('variants', 'Var', (96, 104)) ('PI3K/AKT', 'Gene', (71, 79)) ('tumors', 'Phenotype', 'HP:0002664', (124, 130)) ('000 tumors', 'Disease', (120, 130)) ('PI3K/AKT', 'Gene', '5295;207', (71, 79)) 117747 28528867 PIK3CA mutation, has been shown to increase response rates in clinical trials testing inhibitors to PI3K/AKT/mTOR pathway, though non-responders are still common. ('PI3K/AKT', 'Gene', '5295;207', (100, 108)) ('increase', 'PosReg', (35, 43)) ('response', 'MPA', (44, 52)) ('PIK3CA', 'Gene', (0, 6)) ('PI3K/AKT', 'Gene', (100, 108)) ('mutation', 'Var', (7, 15)) 117763 28528867 Pan-cancer RPPA profiles were scored for a PI3K/AKT pathway signature, defined as the sum of normalized phosphoprotein levels of AKT (both S473 and T308 RPPA features), GSK3 (S9 and S21/S9 features), PRAS40, and phospho-TSC2. ('TSC2', 'Gene', '7249', (220, 224)) ('S9', 'Var', (175, 177)) ('PI3K/AKT', 'Gene', '5295;207', (43, 51)) ('Pan-cancer', 'Disease', (0, 10)) ('TSC2', 'Gene', (220, 224)) ('PI3K/AKT', 'Gene', (43, 51)) ('cancer', 'Phenotype', 'HP:0002664', (4, 10)) ('AKT', 'Pathway', (129, 132)) ('T308 RPPA', 'Var', (148, 157)) ('Pan-cancer', 'Disease', 'MESH:C537931', (0, 10)) ('PRAS40', 'Gene', '84335', (200, 206)) ('PRAS40', 'Gene', (200, 206)) ('S21/S9 features', 'Var', (182, 197)) 117764 28528867 RPPA profiles were also scored for an mTOR pathway signature, defined as the sum of phosphoprotein levels of mTOR, 4EBP1 (S65, T37/T46, and T70 RPPA features), P70S6K, and S6 (S235/S236 and S240/S244 features). ('4EBP1', 'Gene', '1978', (115, 120)) ('S240/S244 features', 'Var', (190, 208)) ('P70S6K', 'Gene', (160, 166)) ('4EBP1', 'Gene', (115, 120)) ('S65', 'Var', (122, 125)) ('mTOR', 'Gene', (109, 113)) ('T70 RPPA', 'Var', (140, 148)) ('S235/S236', 'Var', (176, 185)) ('T37/T46', 'Var', (127, 134)) ('P70S6K', 'Gene', '6198', (160, 166)) 117772 28528867 Manual review of variants involving AKT1/2/3, MTOR, PIK3CA, PTEN, RHEB, TSC1/2 was also carried out by domain experts in the analysis group. ('MTOR', 'Gene', (46, 50)) ('TSC1/2', 'Gene', (72, 78)) ('variants', 'Var', (17, 25)) ('AKT1/2/3', 'Gene', (36, 44)) ('PIK3CA', 'Gene', (52, 58)) ('MTOR', 'Gene', '2475', (46, 50)) ('RHEB', 'Gene', (66, 70)) ('PTEN', 'Gene', (60, 64)) ('RHEB', 'Gene', '6009', (66, 70)) ('AKT1/2/3', 'Gene', '207;208;10000', (36, 44)) ('TSC1/2', 'Gene', '7248;7249', (72, 78)) 117773 28528867 Mutations that were predicted as potentially functional by any of the above:as well as mutations in tumor suppressor genes (e.g. ('tumor', 'Phenotype', 'HP:0002664', (100, 105)) ('tumor', 'Disease', (100, 105)) ('Mutations', 'Var', (0, 9)) ('tumor', 'Disease', 'MESH:D009369', (100, 105)) ('mutations', 'Var', (87, 96)) 117774 28528867 The effects of mutations on the function of PIK3CA and PIK3R1 were assessed in Ba/F3 and MCF10A by survival assay as previously described with lentiviral vector pHAGE used in the cloning. ('PIK3CA', 'Gene', (44, 50)) ('PIK3R1', 'Gene', (55, 61)) ('mutations', 'Var', (15, 24)) ('MCF10A', 'CellLine', 'CVCL:0598', (89, 95)) 117775 28528867 In Ba/F3, the PIK3CA mutations were assigned as "Strong activating (SA)" if the mutations have an activity higher than M1043I (known moderate driver); as "Moderate activating (MA)" if the mutations have a similar or lower activity than M1043I; as "No difference from WT (NDFW)" if the mutations have a similar activity with WT; or as "Inactivating (INA)" if the mutations have an activity similar to negative controls (GFP/mCherry/Luciferase). ('M1043I', 'Mutation', 'rs121913283', (236, 242)) ('lower', 'NegReg', (216, 221)) ('mutations', 'Var', (80, 89)) ('M1043I', 'Mutation', 'rs121913283', (119, 125)) ('higher', 'PosReg', (107, 113)) ('PIK3CA', 'Gene', (14, 20)) ('activity', 'MPA', (222, 230)) ('activity', 'MPA', (98, 106)) ('mutations', 'Var', (21, 30)) 117776 28528867 The PIK3R1 mutations were assigned as "SA" if the mutations have a relative level of activation higher than that of PIK3CA M1043I comparing to negative controls; as "MA" if the mutations have a relative level of activation between PIK3CA M1043I and WT; as "Weak activating (WA)" if the mutations have a relative level of activation between PIK3CA WT and negative controls; or as "NDFW" if the mutations have a similar activity with WT. ('mutations', 'Var', (11, 20)) ('activating', 'MPA', (262, 272)) ('PIK3R1', 'Gene', (4, 10)) ('M1043I', 'Mutation', 'rs121913283', (123, 129)) ('activation higher', 'PosReg', (85, 102)) ('M1043I', 'Mutation', 'rs121913283', (238, 244)) ('PIK3CA M1043I', 'Var', (231, 244)) 117777 28528867 In MCF10A, the PIK3CA mutations were assigned as "SA" and "NDFW" by the same mean as in Ba/F3 model. ('MCF10A', 'CellLine', 'CVCL:0598', (3, 9)) ('mutations', 'Var', (22, 31)) ('PIK3CA', 'Gene', (15, 21)) 117778 28528867 The mutations were assigned as "MA" and "WA" if the mutations have an activity above and lower than 50% of that of M1043I, respectively. ('mutations', 'Var', (52, 61)) ('M1043I', 'Mutation', 'rs121913283', (115, 121)) ('lower', 'NegReg', (89, 94)) ('activity', 'MPA', (70, 78)) 117781 28528867 An "other gene mutation" class of Figures 7A and 7B involved nonsilent mutations for other genes represented in Figure 2A (AKTS1, DEPDC5, DEPTOR, MAPKAP1, MLST8, NPRL2, NPRL3, PDK1, PRR5, RHEB, RICTOR, RPTOR, PIK3C2B). ('RICTOR', 'Gene', (194, 200)) ('MAPKAP1', 'Gene', '79109', (146, 153)) ('DEPTOR', 'Gene', '64798', (138, 144)) ('RPTOR', 'Gene', (202, 207)) ('MLST8', 'Gene', '64223', (155, 160)) ('PDK1', 'Gene', '5163', (176, 180)) ('MLST8', 'Gene', (155, 160)) ('NPRL3', 'Gene', (169, 174)) ('RHEB', 'Gene', '6009', (188, 192)) ('PIK3C2B', 'Gene', (209, 216)) ('DEPDC5', 'Gene', '9681', (130, 136)) ('PRR5', 'Gene', (182, 186)) ('mutations', 'Var', (71, 80)) ('DEPDC5', 'Gene', (130, 136)) ('MAPKAP1', 'Gene', (146, 153)) ('DEPTOR', 'Gene', (138, 144)) ('PRR5', 'Gene', '55615', (182, 186)) ('NPRL2', 'Gene', '10641', (162, 167)) ('PIK3C2B', 'Gene', '5287', (209, 216)) ('RPTOR', 'Gene', '57521', (202, 207)) ('PDK1', 'Gene', (176, 180)) ('RICTOR', 'Gene', '253260', (194, 200)) ('NPRL3', 'Gene', '8131', (169, 174)) ('NPRL2', 'Gene', (162, 167)) ('RHEB', 'Gene', (188, 192)) 117782 28528867 The RTK group represented cases with hotspot mutations in KRAS, BRAF, EGFR, or ERBB2, that were not also included in the other PI3K/AKT/mTOR-related groups. ('KRAS', 'Gene', (58, 62)) ('mutations', 'Var', (45, 54)) ('KRAS', 'Gene', '3845', (58, 62)) ('BRAF', 'Gene', '673', (64, 68)) ('EGFR', 'Gene', '1956', (70, 74)) ('BRAF', 'Gene', (64, 68)) ('RTK', 'Gene', '5979', (4, 7)) ('ERBB2', 'Gene', (79, 84)) ('ERBB2', 'Gene', '2064', (79, 84)) ('PI3K/AKT', 'Gene', (127, 135)) ('EGFR', 'Gene', (70, 74)) ('PI3K/AKT', 'Gene', '5295;207', (127, 135)) ('RTK', 'Gene', (4, 7)) 117784 28528867 When defining proteins that were highly expressed specifically within the High P-AKT group (Figure 7D), RPPA features were selected that were over- or under-expressed in the High P-AKT compared to unaligned cases (p<0.05, t-test on log-transformed data) for at least four of the seven cancer types, and differentially expressed in High P-AKT compared to unaligned and to PI3K/AKT/mTOR or RTK-altered cases across all cancer cases (p<0.01 for each). ('over-', 'PosReg', (142, 147)) ('cancer', 'Disease', (417, 423)) ('RTK', 'Gene', '5979', (388, 391)) ('High', 'Var', (174, 178)) ('under-expressed', 'NegReg', (151, 166)) ('cancer', 'Phenotype', 'HP:0002664', (285, 291)) ('PI3K/AKT', 'Gene', (371, 379)) ('cancer', 'Phenotype', 'HP:0002664', (417, 423)) ('High P-AKT', 'Var', (331, 341)) ('RTK', 'Gene', (388, 391)) ('cancer', 'Disease', (285, 291)) ('cancer', 'Disease', 'MESH:D009369', (285, 291)) ('PI3K/AKT', 'Gene', '5295;207', (371, 379)) ('cancer', 'Disease', 'MESH:D009369', (417, 423)) 117794 28528867 Multiplatform-based survey of PI3K/AKT/mTOR across over 10,000 human cancers Distinct classes of somatic alteration associated with greater pathway activation Functional interrogation of specific mutations in PIK3CA and PIK3R1 Support for inclusion of IDH1 and VHL mutations within the canonical pathway model ('cancers', 'Disease', 'MESH:D009369', (69, 76)) ('human', 'Species', '9606', (63, 68)) ('PIK3CA', 'Gene', (209, 215)) ('cancer', 'Phenotype', 'HP:0002664', (69, 75)) ('PIK3R1', 'Gene', (220, 226)) ('IDH1', 'Gene', (252, 256)) ('VHL', 'Disease', 'MESH:D006623', (261, 264)) ('mutations', 'Var', (196, 205)) ('VHL', 'Disease', (261, 264)) ('PI3K/AKT', 'Gene', (30, 38)) ('IDH1', 'Gene', '3417', (252, 256)) ('cancers', 'Phenotype', 'HP:0002664', (69, 76)) ('PI3K/AKT', 'Gene', '5295;207', (30, 38)) ('cancers', 'Disease', (69, 76)) 117798 27990160 Human PPGL cells were treated with sunitinib and inhibitors of PI3K (LY294002), MEK1/2 (U0126), and mTORC1/2 (AZD8055). ('mTORC1/2', 'Gene', '74343;382056', (100, 108)) ('LY294002', 'Var', (69, 77)) ('sunitinib', 'Chemical', 'MESH:D000077210', (35, 44)) ('MEK1/2', 'Gene', '5604;5605', (80, 86)) ('mTORC1/2', 'Gene', (100, 108)) ('MEK1/2', 'Gene', (80, 86)) ('AZD8055', 'Chemical', 'MESH:C546624', (110, 117)) ('mTORC1', 'Gene', '382056', (100, 106)) ('U0126', 'Chemical', 'MESH:C113580', (88, 93)) ('LY294002', 'Chemical', 'MESH:C085911', (69, 77)) ('MEK', 'Gene', (80, 83)) ('MEK', 'Gene', '5609', (80, 83)) ('mTORC1', 'Gene', (100, 106)) 117800 27990160 LY294002 (10 muM), U0126 (10 muM), AZD8055 (1 muM), and sunitinib (1 muM) inhibited PPGL cell proliferation in ten primary cultures of tissues, including four from patients with gene mutations. ('LY294002', 'Var', (0, 8)) ('muM', 'Gene', (29, 32)) ('inhibited', 'NegReg', (74, 83)) ('U0126', 'Var', (19, 24)) ('muM', 'Gene', '56925', (69, 72)) ('muM', 'Gene', (13, 16)) ('AZD8055', 'Var', (35, 42)) ('muM', 'Gene', (69, 72)) ('muM', 'Gene', '56925', (46, 49)) ('muM', 'Gene', '56925', (29, 32)) ('PPGL cell proliferation', 'CPA', (84, 107)) ('patients', 'Species', '9606', (164, 172)) ('muM', 'Gene', (46, 49)) ('muM', 'Gene', '56925', (13, 16)) 117804 27990160 Cluster 1 includes the tumors with von Hippel-Lindau (VHL) gene and the subunits of the succinate dehydrogenase (SDHx) mutation that lead to dysregulation of Krebs cycle and activation of hypoxia signaling pathway. ('dysregulation', 'MPA', (141, 154)) ('mutation', 'Var', (119, 127)) ('SDHx', 'Gene', (113, 117)) ('von Hippel-Lindau', 'Gene', '7428', (35, 52)) ('VHL', 'Gene', (54, 57)) ('hypoxia', 'Disease', (188, 195)) ('hypoxia', 'Disease', 'MESH:D000860', (188, 195)) ('Krebs', 'Chemical', '-', (158, 163)) ('VHL', 'Gene', '7428', (54, 57)) ('von Hippel-Lindau', 'Gene', (35, 52)) ('Krebs cycle', 'Pathway', (158, 169)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('activation', 'PosReg', (174, 184)) ('tumors', 'Phenotype', 'HP:0002664', (23, 29)) 117805 27990160 Cluster 2 involves the tumors with the mutation of rearranged during transfection (RET), neurofibromin 1 (NF1), kinesin family member 1B (KIF1Bb), transmembrane protein 127 (TMEM127), and MYC-associated factor X (MAX), which are associated with abnormal activation of phosphatidylinositol 3' kinase (PI3K)/protein kinase B (AKT), mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK), and mammalian target of rapamycin C1 (mTORC1)/p70S6K. ('TMEM127', 'Gene', '55654', (174, 181)) ('neurofibromin 1', 'Gene', (89, 104)) ('mutation', 'Var', (39, 47)) ('RET', 'Gene', '5979', (83, 86)) ('neurofibromin 1', 'Gene', '4763', (89, 104)) ('rapamycin', 'Chemical', 'MESH:D020123', (439, 448)) ('tumor', 'Phenotype', 'HP:0002664', (23, 28)) ('p70S6K', 'Gene', '6198', (461, 467)) ('TMEM127', 'Gene', (174, 181)) ('p70S6K', 'Gene', (461, 467)) ('activation', 'PosReg', (254, 264)) ('RET', 'Gene', (83, 86)) ("phosphatidylinositol 3' kinase", 'Gene', '5290', (268, 298)) ("phosphatidylinositol 3' kinase", 'Gene', (268, 298)) ('mammalian', 'Species', '9606', (419, 428)) ('MYC-associated factor X', 'Gene', '4149', (188, 211)) ('tumors', 'Phenotype', 'HP:0002664', (23, 29)) ('MYC-associated factor X', 'Gene', (188, 211)) 117808 27990160 found that the expression of mTOR (mTORC1 and mTORC2) mRNA was higher in PPGLs with SDHB and VHL mutations than in normal adrenal medulla. ('mutations', 'Var', (97, 106)) ('SDHB', 'Gene', '6390', (84, 88)) ('SDHB', 'Gene', (84, 88)) ('expression', 'MPA', (15, 25)) ('mTOR', 'MPA', (29, 33)) ('higher', 'PosReg', (63, 69)) ('VHL', 'Gene', (93, 96)) 117812 27990160 Antibodies against phospho-AKT (Ser473), phospho-p44/42MAPK (ERK1/2) (Thr202/Tyr204), and phospho-mTOR (Ser2448) were obtained from Cell Signaling Technology (Beverly, MA, USA). ('Thr202/Tyr204', 'Var', (70, 83)) ('Ser473', 'Var', (32, 38)) ('Ser473', 'Chemical', '-', (32, 38)) ('Thr202', 'Chemical', '-', (70, 76)) ('Ser2448', 'Var', (104, 111)) ('Ser2448', 'Chemical', '-', (104, 111)) ('Tyr204', 'Chemical', '-', (77, 83)) 117821 27990160 On the other hand, some researchers also used a newly established mouse pheochromocytoma cell line from heterozygous NF1 gene knockout mice. ('knockout', 'Var', (126, 134)) ('mice', 'Species', '10090', (135, 139)) ('NF1', 'Gene', (117, 120)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (72, 88)) 117824 27990160 In human neuroendocrine tumor cell lines, blockage of Raf inhibited ERK1/2 phosphorylation but strongly induced AKT phosphorylation, suggesting that there exists a compensatory feedback loop between these two pathways. ('tumor', 'Phenotype', 'HP:0002664', (24, 29)) ('blockage', 'Var', (42, 50)) ('Raf', 'Gene', (54, 57)) ('AKT', 'Pathway', (112, 115)) ('ERK1/2', 'Pathway', (68, 74)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (9, 29)) ('inhibited', 'NegReg', (58, 67)) ('induced', 'Reg', (104, 111)) ('Raf', 'Gene', '22882', (54, 57)) ('phosphorylation', 'MPA', (75, 90)) 117825 27990160 Moreover, it is well documented that inhibition of both MEK/ERK and mTOR substantially enhanced their antitumor effects on prostate cancer both in vitro and in vivo . ('MEK/ERK', 'Gene', (56, 63)) ('cancer', 'Disease', (132, 138)) ('inhibition', 'Var', (37, 47)) ('prostate cancer', 'Phenotype', 'HP:0012125', (123, 138)) ('prostate cancer', 'Disease', (123, 138)) ('cancer', 'Phenotype', 'HP:0002664', (132, 138)) ('antitumor effects', 'CPA', (102, 119)) ('mTOR', 'Gene', (68, 72)) ('enhanced', 'PosReg', (87, 95)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('prostate cancer', 'Disease', 'MESH:D011471', (123, 138)) ('cancer', 'Disease', 'MESH:D009369', (132, 138)) 117826 27990160 A recent study demonstrated that treatment with NVP-BEZ23 (PI3K/mTORC1/2 inhibitor) in combination with lovastatin (ERK1/2 inhibitor) exerted a significant additive antitumor viability in mouse PPGL cell lines. ('lovastatin', 'Chemical', 'MESH:D008148', (104, 114)) ('tumor', 'Phenotype', 'HP:0002664', (169, 174)) ('antitumor viability', 'CPA', (165, 184)) ('NVP-BEZ23', 'Var', (48, 57)) 117828 27990160 We also found that inhibition of both mTOR-C1 and mTOR-C2 strongly downregulated AKT activation, and the finding was consistent with the result observed in rat pheochromocytoma PC12 cell tumor model, which showed that PP242, dual mTOR complex 1 and 2 inhibitor, but not rapamycin, dramatically inhibited tumor growth, suggesting that mTORC-2 inhibition plays an important role and could disturb the mTORC1-dependent negative feedback loops. ('pheochromocytoma PC12 cell tumor', 'Disease', (160, 192)) ('tumor growth', 'CPA', (304, 316)) ('AKT', 'Pathway', (81, 84)) ('tumor', 'Phenotype', 'HP:0002664', (187, 192)) ('pheochromocytoma PC12 cell tumor', 'Disease', 'MESH:D010673', (160, 192)) ('PP242', 'Var', (218, 223)) ('mTORC-2', 'Gene', (334, 341)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (160, 176)) ('inhibited', 'NegReg', (294, 303)) ('tumor', 'Phenotype', 'HP:0002664', (304, 309)) ('activation', 'PosReg', (85, 95)) ('mTORC-2', 'Gene', '74343', (334, 341)) ('disturb', 'Reg', (387, 394)) ('PP242', 'Chemical', 'MESH:C572919', (218, 223)) ('downregulated', 'NegReg', (67, 80)) 117830 26294907 Succinate Dehydrogenase Loss in Familial Paraganglioma: Biochemistry, Genetics, and Epigenetics It is counterintuitive that metabolic defects reducing ATP production can cause, rather than protect from, cancer. ('Succinate Dehydrogenase', 'Gene', (0, 23)) ('Familial Paraganglioma', 'Disease', 'MESH:D010235', (32, 54)) ('ATP production', 'MPA', (151, 165)) ('glioma', 'Phenotype', 'HP:0009733', (48, 54)) ('Succinate Dehydrogenase', 'Gene', '6390', (0, 23)) ('reducing', 'NegReg', (142, 150)) ('Familial Paraganglioma', 'Disease', (32, 54)) ('defects', 'Var', (134, 141)) ('ATP', 'Chemical', 'MESH:D000255', (151, 154)) ('cancer', 'Disease', (203, 209)) ('metabolic defects', 'Var', (124, 141)) ('cancer', 'Disease', 'MESH:D009369', (203, 209)) ('Paraganglioma', 'Phenotype', 'HP:0002668', (41, 54)) ('cause', 'Reg', (170, 175)) ('cancer', 'Phenotype', 'HP:0002664', (203, 209)) 117840 26294907 Since NAD+ is required for glycolysis to continue, NADH reduces pyruvate to lactate, resulting in regeneration of NAD+. ('lactate', 'Chemical', 'MESH:D019344', (76, 83)) ('NADH', 'Var', (51, 55)) ('NADH', 'Chemical', 'MESH:D009243', (51, 55)) ('pyruvate to lactate', 'MPA', (64, 83)) ('NAD+', 'MPA', (114, 118)) ('reduces', 'NegReg', (56, 63)) ('NAD+', 'Chemical', 'MESH:D009243', (6, 10)) ('regeneration', 'MPA', (98, 110)) ('NAD+', 'Chemical', 'MESH:D009243', (114, 118)) ('pyruvate', 'Chemical', 'MESH:D019289', (64, 72)) 117862 26294907 It remains unclear how aerobic glycolysis causes, correlates with, or facilitates cancer progression. ('cancer', 'Phenotype', 'HP:0002664', (82, 88)) ('facilitates', 'PosReg', (70, 81)) ('causes', 'Reg', (42, 48)) ('cancer', 'Disease', (82, 88)) ('cancer', 'Disease', 'MESH:D009369', (82, 88)) ('aerobic', 'Var', (23, 30)) 117903 26294907 For instance, knockout of SIRT3, a major deacetylase, resulted in accumulation of SDHA lysine acetylation. ('lysine', 'Chemical', 'MESH:D008239', (87, 93)) ('accumulation', 'PosReg', (66, 78)) ('SDHA', 'Gene', '6389', (82, 86)) ('SIRT3', 'Gene', '23410', (26, 31)) ('SIRT3', 'Gene', (26, 31)) ('knockout', 'Var', (14, 22)) ('SDHA', 'Gene', (82, 86)) 117906 26294907 Succinylation of SDHA lysine residues has recently been reported in cells treated with an SDH inhibitor or upon knockdown of succinyl-CoA synthetase. ('SDHA', 'Gene', (17, 21)) ('reported', 'Reg', (56, 64)) ('lysine', 'Chemical', 'MESH:D008239', (22, 28)) ('SDH', 'Gene', (90, 93)) ('inhibitor', 'Var', (94, 103)) ('SDHA', 'Gene', '6389', (17, 21)) ('succinyl-CoA', 'Chemical', 'MESH:C012046', (125, 137)) ('Succinylation', 'MPA', (0, 13)) 117917 26294907 They observed that flx1 mutant strain had a decreased mitochondrial flavin adenine dinucleotide/flavin mononucleotide (FAD/FMN) ratio, suggesting that Flx1 is a mitochondrial FAD importer. ('mutant', 'Var', (24, 30)) ('Flx1', 'Gene', (151, 155)) ('FAD', 'Chemical', 'MESH:D005182', (119, 122)) ('flx1', 'Gene', (19, 23)) ('flavin adenine dinucleotide', 'Chemical', 'MESH:D005182', (68, 95)) ('flx1', 'Gene', '854672', (19, 23)) ('FAD', 'Chemical', 'MESH:D005182', (175, 178)) ('FMN', 'Chemical', 'MESH:D005486', (123, 126)) ('Flx1', 'Gene', '854672', (151, 155)) ('flavin mononucleotide', 'Chemical', 'MESH:D005486', (96, 117)) ('decreased', 'NegReg', (44, 53)) 117919 26294907 These authors reported complete loss of covalent FAD incorporation into Sdh1 in flx1 mutant cells and inability of the mutant to grow on nonfermentable carbon sources. ('Sdh1', 'Gene', (72, 76)) ('covalent FAD incorporation', 'MPA', (40, 66)) ('loss', 'NegReg', (32, 36)) ('flx1', 'Gene', '854672', (80, 84)) ('flx1', 'Gene', (80, 84)) ('FAD', 'Chemical', 'MESH:D005182', (49, 52)) ('carbon', 'Chemical', 'MESH:D002244', (152, 158)) ('mutant', 'Var', (85, 91)) 117920 26294907 The flx1 mutant was also hypersensitive to hydrogen peroxide. ('flx1', 'Gene', (4, 8)) ('hypersensitive', 'Disease', (25, 39)) ('hypersensitive', 'Disease', 'MESH:D004342', (25, 39)) ('mutant', 'Var', (9, 15)) ('hydrogen peroxide', 'Chemical', 'MESH:D006861', (43, 60)) ('flx1', 'Gene', '854672', (4, 8)) 117921 26294907 Interestingly, overexpression of Sdh5 (a protein required for flavination of SDH) partially restored SDH activity in the flx1 mutant. ('flx1', 'Gene', (121, 125)) ('flx1', 'Gene', '854672', (121, 125)) ('Sdh5', 'Gene', (33, 37)) ('Sdh5', 'Gene', '54949', (33, 37)) ('SDH activity', 'MPA', (101, 113)) ('flavin', 'Chemical', 'MESH:C024132', (62, 68)) ('mutant', 'Var', (126, 132)) 117922 26294907 SDHAF protein family members can be divided into three groups: those that insert Fe-S centers into SDHB, those that insert FAD into SDHA, and those that participate as chaperones. ('Fe-S', 'Var', (81, 85)) ('SDHA', 'Gene', (0, 4)) ('Fe-S', 'Chemical', 'MESH:D007501', (81, 85)) ('insert', 'Var', (116, 122)) ('insert', 'Reg', (74, 80)) ('FAD', 'Chemical', 'MESH:D005182', (123, 126)) ('SDHA', 'Gene', (132, 136)) ('SDHB', 'Gene', '6390', (99, 103)) ('SDHB', 'Gene', (99, 103)) ('SDHA', 'Gene', '6389', (0, 4)) ('SDHA', 'Gene', '6389', (132, 136)) 117924 26294907 SDHAF1 mutation was reported in an Italian family with progressive infantile leukoencephalopathy and decreased SDH activity. ('infantile leukoencephalopathy', 'Phenotype', 'HP:0007105', (67, 96)) ('leukoencephalopathy', 'Disease', (77, 96)) ('decreased', 'NegReg', (101, 110)) ('SDH activity', 'MPA', (111, 123)) ('SDHAF1', 'Gene', '644096', (0, 6)) ('mutation', 'Var', (7, 15)) ('leukoencephalopathy', 'Phenotype', 'HP:0002352', (77, 96)) ('leukoencephalopathy', 'Disease', 'MESH:D056784', (77, 96)) ('SDHAF1', 'Gene', (0, 6)) 117925 26294907 Using a yeast model, a sdhaf1 mutant showed significant loss of SDH activity and inability to grow on acetate as the carbon source. ('yeast', 'Species', '4932', (8, 13)) ('loss', 'NegReg', (56, 60)) ('carbon', 'Chemical', 'MESH:D002244', (117, 123)) ('acetate', 'Chemical', 'MESH:D000085', (102, 109)) ('inability', 'NegReg', (81, 90)) ('sdhaf1', 'Gene', (23, 29)) ('mutant', 'Var', (30, 36)) ('sdhaf1', 'Gene', '644096', (23, 29)) ('SDH activity', 'MPA', (64, 76)) 117929 26294907 Hao and colleagues showed that mutant sdh5 lacked SDH activity. ('mutant', 'Var', (31, 37)) ('sdh5', 'Gene', (38, 42)) ('SDH activity', 'MPA', (50, 62)) ('sdh5', 'Gene', '54949', (38, 42)) ('lacked', 'NegReg', (43, 49)) 117930 26294907 When Sdh5 was overexpressed, it rescued the FAD incorporation defect previously observed in flx1 mutant cells, which led to the assertion that Sdh5 is required for FAD insertion into the catalytic Sdh1 subunit. ('FAD', 'Chemical', 'MESH:D005182', (44, 47)) ('mutant', 'Var', (97, 103)) ('Sdh5', 'Gene', '54949', (5, 9)) ('FAD incorporation', 'MPA', (44, 61)) ('Sdh5', 'Gene', (5, 9)) ('flx1', 'Gene', '854672', (92, 96)) ('FAD', 'Chemical', 'MESH:D005182', (164, 167)) ('Sdh5', 'Gene', (143, 147)) ('flx1', 'Gene', (92, 96)) ('Sdh5', 'Gene', '54949', (143, 147)) 117947 26294907 Because the SDH complex is essential to central metabolism and oxidizes succinate to fumarate, mutations that disrupt the complex will compromise its function. ('function', 'MPA', (150, 158)) ('fumarate', 'Chemical', 'MESH:D005650', (85, 93)) ('mutations', 'Var', (95, 104)) ('SDH', 'Gene', (12, 15)) ('compromise', 'NegReg', (135, 145)) ('succinate', 'Chemical', 'MESH:D019802', (72, 81)) 117949 26294907 SDHA-associated mutations are mapped to the SDHA gene on chromosome 5p15.33. ('SDHA', 'Gene', (0, 4)) ('SDHA', 'Gene', '6389', (44, 48)) ('mutations', 'Var', (16, 25)) ('SDHA', 'Gene', '6389', (0, 4)) ('SDHA', 'Gene', (44, 48)) 117950 26294907 Mysteriously, such mutations have very low penetrance in PGL/pheochromocytoma. ('PGL', 'Phenotype', 'HP:0002668', (57, 60)) ('mutations', 'Var', (19, 28)) ('pheochromocytoma', 'Disease', (61, 77)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (61, 77)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (61, 77)) 117951 26294907 Thus far, six PGL patients have been reported with SDHA mutations. ('mutations', 'Var', (56, 65)) ('SDHA', 'Gene', (51, 55)) ('PGL', 'Phenotype', 'HP:0002668', (14, 17)) ('patients', 'Species', '9606', (18, 26)) ('SDHA', 'Gene', '6389', (51, 55)) 117953 26294907 SDHA mutations are also associated with Leigh syndrome. ('Leigh syndrome', 'Disease', 'MESH:D007888', (40, 54)) ('associated', 'Reg', (24, 34)) ('SDHA', 'Gene', (0, 4)) ('Leigh syndrome', 'Disease', (40, 54)) ('mutations', 'Var', (5, 14)) ('SDHA', 'Gene', '6389', (0, 4)) 117954 26294907 Unlike SDH-loss PGL (a disorder displaying autosomal dominant inheritance), Leigh syndrome displays recessive inheritance requiring inherited mutations in both SDHA alleles. ('mutations', 'Var', (142, 151)) ('SDHA', 'Gene', '6389', (160, 164)) ('SDH-loss PGL', 'Disease', 'MESH:D010235', (7, 19)) ('Leigh syndrome', 'Disease', (76, 90)) ('SDH-loss PGL', 'Disease', (7, 19)) ('Leigh syndrome', 'Disease', 'MESH:D007888', (76, 90)) ('SDHA', 'Gene', (160, 164)) ('PGL', 'Phenotype', 'HP:0002668', (16, 19)) 117956 26294907 The peculiar underrepresentation of SDHA mutations in familiar PGL is a mystery. ('mutations', 'Var', (41, 50)) ('PGL', 'Phenotype', 'HP:0002668', (63, 66)) ('SDHA', 'Gene', (36, 40)) ('SDHA', 'Gene', '6389', (36, 40)) 117957 26294907 The PGL syndrome associated with SDHB gene mutations was identified by Astuti and colleagues; see. ('SDHB', 'Gene', '6390', (33, 37)) ('associated', 'Reg', (17, 27)) ('SDHB', 'Gene', (33, 37)) ('PGL', 'Phenotype', 'HP:0002668', (4, 7)) ('mutations', 'Var', (43, 52)) ('PGL syndrome', 'Disease', (4, 16)) ('PGL syndrome', 'Disease', 'MESH:D010235', (4, 16)) 117958 26294907 SDHB mutations were reported to have a 77% penetrance rate by age 50. ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) ('mutations', 'Var', (5, 14)) 117961 26294907 Patients with SDHB-associated mutations are reported to be more likely to become malignant. ('Patients', 'Species', '9606', (0, 8)) ('become malignant', 'CPA', (74, 90)) ('SDHB', 'Gene', '6390', (14, 18)) ('mutations', 'Var', (30, 39)) ('SDHB', 'Gene', (14, 18)) 117962 26294907 Some patients with SDHB mutations have also been reported to develop renal cell carcinoma. ('carcinoma', 'Phenotype', 'HP:0030731', (80, 89)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (69, 89)) ('SDHB', 'Gene', '6390', (19, 23)) ('patients', 'Species', '9606', (5, 13)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (69, 89)) ('SDHB', 'Gene', (19, 23)) ('renal cell carcinoma', 'Disease', (69, 89)) ('mutations', 'Var', (24, 33)) ('develop', 'PosReg', (61, 68)) 117965 26294907 SDHC-associated mutations are rare and less penetrant than SDHB and SDHD mutations. ('SDHD', 'Gene', '6392', (68, 72)) ('mutations', 'Var', (16, 25)) ('SDHD', 'Gene', (68, 72)) ('SDHB', 'Gene', '6390', (59, 63)) ('SDHB', 'Gene', (59, 63)) ('SDHC-associated', 'Gene', (0, 15)) 117966 26294907 PGL tumors due to SDHD mutations were first identified by Baysal and colleagues. ('PGL tumors', 'Disease', (0, 10)) ('PGL', 'Phenotype', 'HP:0002668', (0, 3)) ('tumors', 'Phenotype', 'HP:0002664', (4, 10)) ('mutations', 'Var', (23, 32)) ('PGL tumors', 'Disease', 'MESH:D010235', (0, 10)) ('tumor', 'Phenotype', 'HP:0002664', (4, 9)) ('SDHD', 'Gene', (18, 22)) ('SDHD', 'Gene', '6392', (18, 22)) 117969 26294907 The majority of familial PGL cases with SDHD mutations inherit the mutation from their father and will develop PGL before the age of 50. ('SDHD', 'Gene', '6392', (40, 44)) ('PGL', 'Disease', (111, 114)) ('mutations', 'Var', (45, 54)) ('SDHD', 'Gene', (40, 44)) ('develop', 'PosReg', (103, 110)) ('PGL', 'Phenotype', 'HP:0002668', (25, 28)) ('familial PGL', 'Disease', (16, 28)) ('PGL', 'Phenotype', 'HP:0002668', (111, 114)) 117971 26294907 SDHD mutations include frameshift mutations (40%), nonsense mutations (25%), and splicing mutations (9%). ('nonsense mutations', 'Var', (51, 69)) ('SDHD', 'Gene', '6392', (0, 4)) ('frameshift mutations', 'Var', (23, 43)) ('SDHD', 'Gene', (0, 4)) ('splicing', 'Disease', (81, 89)) 117972 26294907 SDHD mutations are mainly found in patients with head and neck parasympathetic PGLs occurring in multiple locations and are reported to rarely metastasize. ('mutations', 'Var', (5, 14)) ('found', 'Reg', (26, 31)) ('SDHD', 'Gene', '6392', (0, 4)) ('PGL', 'Phenotype', 'HP:0002668', (79, 82)) ('patients', 'Species', '9606', (35, 43)) ('SDHD', 'Gene', (0, 4)) 117975 26294907 Mutation of SDHAF2 will result in the lack of SDH activity. ('lack', 'NegReg', (38, 42)) ('Mutation', 'Var', (0, 8)) ('SDH activity', 'MPA', (46, 58)) ('SDHAF2', 'Gene', '54949', (12, 18)) ('SDHAF2', 'Gene', (12, 18)) 117976 26294907 Thus far, SDHAF2-associated mutations have been linked to 15 cases of PGL. ('SDHAF2', 'Gene', (10, 16)) ('SDHAF2', 'Gene', '54949', (10, 16)) ('PGL', 'Phenotype', 'HP:0002668', (70, 73)) ('mutations', 'Var', (28, 37)) ('PGL', 'Disease', (70, 73)) ('linked', 'Reg', (48, 54)) 117978 26294907 Assuming that PGL mutagenesis is associated with SDH pathology, it is unexplained why there are different tumor phenotypes for different kinds of loss-of-function molecular pathologies in SDH. ('mutagenesis', 'Var', (18, 29)) ('PGL', 'Protein', (14, 17)) ('tumor', 'Disease', 'MESH:D009369', (106, 111)) ('associated', 'Reg', (33, 43)) ('PGL', 'Phenotype', 'HP:0002668', (14, 17)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('SDH', 'Disease', (49, 52)) ('tumor', 'Disease', (106, 111)) 117980 26294907 Among additional tumors associated with SDH mutations, three autosomal dominant hereditary syndromes are of particular interest: gastrointestinal stromal tumor (GIST), GIST with PGL (Carney-Stratakis dyad), and GIST with PGL and pulmonary chondroma (Carney triad). ('gastrointestinal stromal tumor', 'Phenotype', 'HP:0100723', (129, 159)) ('associated', 'Reg', (24, 34)) ('tumors', 'Disease', (17, 23)) ('gastrointestinal stromal tumor', 'Disease', 'MESH:D046152', (129, 159)) ('PGL', 'Phenotype', 'HP:0002668', (221, 224)) ('GIST', 'Phenotype', 'HP:0100723', (211, 215)) ('autosomal dominant hereditary syndromes', 'Disease', (61, 100)) ('PGL', 'Disease', (221, 224)) ('tumors', 'Disease', 'MESH:D009369', (17, 23)) ('gastrointestinal stromal tumor', 'Disease', (129, 159)) ('pulmonary chondroma', 'Disease', 'MESH:D002812', (229, 248)) ('pulmonary chondroma', 'Disease', (229, 248)) ('SDH', 'Gene', (40, 43)) ('PGL', 'Phenotype', 'HP:0002668', (178, 181)) ('GIST', 'Phenotype', 'HP:0100723', (161, 165)) ('PGL', 'Disease', (178, 181)) ('autosomal dominant hereditary syndromes', 'Disease', 'MESH:D030342', (61, 100)) ('tumor', 'Phenotype', 'HP:0002664', (154, 159)) ('tumors', 'Phenotype', 'HP:0002664', (17, 23)) ('GIST', 'Phenotype', 'HP:0100723', (168, 172)) ('mutations', 'Var', (44, 53)) ('pulmonary chondroma', 'Phenotype', 'HP:0031474', (229, 248)) ('tumor', 'Phenotype', 'HP:0002664', (17, 22)) 117983 26294907 The majority of GISTs are caused by KIT or platelet-derived growth factor receptor alpha (PDGFRA) mutations. ('GISTs', 'Disease', (16, 21)) ('GIST', 'Phenotype', 'HP:0100723', (16, 20)) ('PDGFRA', 'Gene', '5156', (90, 96)) ('PDGFRA', 'Gene', (90, 96)) ('mutations', 'Var', (98, 107)) ('platelet-derived growth factor receptor alpha', 'Gene', '5156', (43, 88)) ('caused', 'Reg', (26, 32)) ('platelet-derived growth factor receptor alpha', 'Gene', (43, 88)) 117985 26294907 To date, SDHA mutations are most common, reported in 28% of SDH-deficient GIST. ('GIST', 'Phenotype', 'HP:0100723', (74, 78)) ('SDHA', 'Gene', '6389', (9, 13)) ('SDH-deficient GIST', 'Disease', 'MESH:D046152', (60, 78)) ('SDHA', 'Gene', (9, 13)) ('SDH-deficient GIST', 'Disease', (60, 78)) ('mutations', 'Var', (14, 23)) 117990 26294907 The only link is a study showing epigenetic silencing of the SDHC gene locus in a Carney triad patient. ('Carney triad', 'Disease', (82, 94)) ('SDHC', 'Gene', (61, 65)) ('epigenetic silencing', 'Var', (33, 53)) ('patient', 'Species', '9606', (95, 102)) 117991 26294907 The authors showed that the SDHC subunit gene was hypermethylated in some Carney triad patients. ('hypermethylated', 'Var', (50, 65)) ('Carney triad', 'Disease', (74, 86)) ('patients', 'Species', '9606', (87, 95)) ('SDHC subunit gene', 'Gene', (28, 45)) 117992 26294907 Importantly, recent integrative genomic studies have confirmed the key roles of established tumor suppressor genes in PGL but suggest that particular combinations of mutations and resulting epigenetic signatures (see below) distinguish different hereditary PGL subtypes. ('PGL', 'Disease', (118, 121)) ('mutations', 'Var', (166, 175)) ('tumor', 'Disease', 'MESH:D009369', (92, 97)) ('epigenetic signatures', 'MPA', (190, 211)) ('PGL', 'Phenotype', 'HP:0002668', (257, 260)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('tumor', 'Disease', (92, 97)) ('PGL', 'Phenotype', 'HP:0002668', (118, 121)) 117993 26294907 Two models have been proposed to explain how loss of SDH leads to PGL tumorigenesis. ('SDH', 'Gene', (53, 56)) ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('tumor', 'Disease', 'MESH:D009369', (70, 75)) ('tumor', 'Disease', (70, 75)) ('PGL', 'Phenotype', 'HP:0002668', (66, 69)) ('PGL', 'Disease', (66, 69)) ('loss', 'Var', (45, 49)) ('leads to', 'Reg', (57, 65)) 117994 26294907 The first model hypothesizes that loss of SDH causes mutagenic oxidative stress with tumorigenic consequences. ('tumor', 'Disease', (85, 90)) ('loss', 'Var', (34, 38)) ('SDH', 'Gene', (42, 45)) ('tumor', 'Disease', 'MESH:D009369', (85, 90)) ('oxidative stress', 'Phenotype', 'HP:0025464', (63, 79)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('causes', 'Reg', (46, 52)) ('mutagenic oxidative stress', 'MPA', (53, 79)) 117995 26294907 The second model argues that inactivation of SDH produces excess succinate, which can poison alpha-KG-dependent dioxygenases with tumorigenic consequences that are not yet understood. ('poison', 'NegReg', (86, 92)) ('tumor', 'Disease', 'MESH:D009369', (130, 135)) ('alpha-KG-dependent dioxygenases', 'Enzyme', (93, 124)) ('SDH', 'Gene', (45, 48)) ('oxygen', 'Chemical', 'MESH:D010100', (114, 120)) ('succinate', 'MPA', (65, 74)) ('tumor', 'Phenotype', 'HP:0002664', (130, 135)) ('tumor', 'Disease', (130, 135)) ('succinate', 'Chemical', 'MESH:D019802', (65, 74)) ('inactivation', 'Var', (29, 41)) ('alpha-KG', 'Chemical', 'MESH:D007656', (93, 101)) 117999 26294907 However, some evidence suggests that disruption of Complex II, as in SDH subunit gene mutations, can result in defective partial SDH complexes with oxidative stress, genomic instability, tumorigenesis, and decreased lifespan. ('mutations', 'Var', (86, 95)) ('disruption', 'Var', (37, 47)) ('tumor', 'Disease', 'MESH:D009369', (187, 192)) ('SDH subunit', 'Gene', (69, 80)) ('oxidative stress', 'MPA', (148, 164)) ('partial SDH complexes', 'Protein', (121, 142)) ('tumor', 'Phenotype', 'HP:0002664', (187, 192)) ('decreased', 'NegReg', (206, 215)) ('genomic instability', 'CPA', (166, 185)) ('tumor', 'Disease', (187, 192)) ('oxidative stress', 'Phenotype', 'HP:0025464', (148, 164)) ('defective', 'NegReg', (111, 120)) ('lifespan', 'CPA', (216, 224)) 118000 26294907 The first evidence of ROS production in an SDH-deficient model came from studies of a mev-1 mutation in C. elegans. ('mutation', 'Var', (92, 100)) ('mev-1', 'Gene', (86, 91)) ('C. elegans', 'Species', '6239', (104, 114)) ('ROS', 'Chemical', 'MESH:D017382', (22, 25)) ('mev-1', 'Gene', '260040', (86, 91)) 118002 26294907 Certain mev-1 missense alleles compromised the ability of SDH to interact with ubiquinone, resulting in electron leakage. ('interact', 'Interaction', (65, 73)) ('ability', 'MPA', (47, 54)) ('compromised', 'NegReg', (31, 42)) ('missense alleles', 'Var', (14, 30)) ('ubiquinone', 'Chemical', 'MESH:D014451', (79, 89)) ('mev-1', 'Gene', '260040', (8, 13)) ('electron leakage', 'MPA', (104, 120)) ('mev-1', 'Gene', (8, 13)) 118003 26294907 The mev-1 mutant was hypersensitive to oxygen and had a decreased lifespan. ('mev-1', 'Gene', (4, 9)) ('mutant', 'Var', (10, 16)) ('decreased', 'NegReg', (56, 65)) ('lifespan', 'CPA', (66, 74)) ('mev-1', 'Gene', '260040', (4, 9)) ('hypersensitive', 'Disease', 'MESH:D004342', (21, 35)) ('oxygen', 'Chemical', 'MESH:D010100', (39, 45)) ('hypersensitive', 'Disease', (21, 35)) 118004 26294907 Superoxide anion and lactate levels were higher in the mev-1 mutant than in wild type worms. ('mev-1', 'Gene', '260040', (55, 60)) ('Superoxide anion', 'Chemical', 'MESH:D013481', (0, 16)) ('mev-1', 'Gene', (55, 60)) ('lactate levels', 'MPA', (21, 35)) ('mutant', 'Var', (61, 67)) ('higher', 'PosReg', (41, 47)) ('lactate', 'Chemical', 'MESH:D019344', (21, 28)) 118007 26294907 There was a higher frequency of DNA damage, and explanation of SDHC mutant cells into immune-compromised mice resulted in benign tumors. ('tumors', 'Phenotype', 'HP:0002664', (129, 135)) ('DNA damage', 'MPA', (32, 42)) ('benign tumors', 'Disease', 'MESH:D009369', (122, 135)) ('SDHC', 'Gene', (63, 67)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) ('resulted in', 'Reg', (110, 121)) ('mice', 'Species', '10090', (105, 109)) ('benign tumors', 'Disease', (122, 135)) ('mutant', 'Var', (68, 74)) 118008 26294907 In the hamster model, cancer phenotypes were seen in fibroblasts expressing the mutant SDHC protein. ('cancer', 'Disease', 'MESH:D009369', (22, 28)) ('mutant', 'Var', (80, 86)) ('SDHC', 'Gene', (87, 91)) ('cancer', 'Disease', (22, 28)) ('cancer', 'Phenotype', 'HP:0002664', (22, 28)) ('hamster', 'Species', '10034', (7, 14)) ('protein', 'Protein', (92, 99)) 118011 26294907 The second model of PGL tumorigenesis proposes that loss of SDH function causes succinate accumulation in mitochondria. ('SDH', 'Gene', (60, 63)) ('tumor', 'Phenotype', 'HP:0002664', (24, 29)) ('succinate', 'Chemical', 'MESH:D019802', (80, 89)) ('loss', 'Var', (52, 56)) ('tumor', 'Disease', (24, 29)) ('succinate accumulation in mitochondria', 'MPA', (80, 118)) ('PGL', 'Phenotype', 'HP:0002668', (20, 23)) ('tumor', 'Disease', 'MESH:D009369', (24, 29)) 118021 26294907 In their report, siRNA was used to knock down SDHD expression in HEK293 cells. ('SDHD', 'Gene', (46, 50)) ('SDHD', 'Gene', '6392', (46, 50)) ('knock down', 'Var', (35, 45)) ('HEK293', 'CellLine', 'CVCL:0045', (65, 71)) 118023 26294907 The authors then demonstrated that succinate could inhibit PHD activity in vitro, which led to the conclusion that succinate accumulation in SDH-deficient cells could inhibit PHD activity and induce HIF stabilization. ('succinate', 'Chemical', 'MESH:D019802', (115, 124)) ('SDH-deficient', 'Gene', (141, 154)) ('SDH-deficient', 'Var', (141, 154)) ('succinate', 'Chemical', 'MESH:D019802', (35, 44)) ('induce', 'PosReg', (192, 198)) ('PHD activity', 'CPA', (175, 187)) ('PHD activity', 'CPA', (59, 71)) ('inhibit', 'NegReg', (167, 174)) ('accumulation', 'PosReg', (125, 137)) ('inhibit', 'NegReg', (51, 58)) ('succinate', 'MPA', (115, 124)) ('HIF stabilization', 'CPA', (199, 216)) 118036 26294907 Confirming this hypothesis, Cervera and colleagues showed that knocking down SDHB resulted in 6-fold or more dysregulation of genes that could influence proliferation, adhesion, and the hypoxia pathway. ('knocking down', 'Var', (63, 76)) ('adhesion', 'CPA', (168, 176)) ('hypoxia', 'Disease', 'MESH:D000860', (186, 193)) ('SDHB', 'Gene', '6390', (77, 81)) ('influence', 'Reg', (143, 152)) ('proliferation', 'CPA', (153, 166)) ('SDHB', 'Gene', (77, 81)) ('dysregulation of genes', 'MPA', (109, 131)) ('hypoxia', 'Disease', (186, 193)) 118038 26294907 In other work, Cervera and colleagues confirmed that loss of SDHB dysregulated histone modifications. ('histone modifications', 'MPA', (79, 100)) ('SDHB', 'Gene', '6390', (61, 65)) ('loss', 'Var', (53, 57)) ('SDHB', 'Gene', (61, 65)) ('dysregulated', 'Reg', (66, 78)) ('histone', 'Chemical', '-', (79, 86)) 118048 26294907 Letouze and colleagues showed that succinate accumulated in SDHB knockout chromaffin cells led to DNA hypermethylation and established a migratory phenotype. ('succinate', 'Chemical', 'MESH:D019802', (35, 44)) ('migratory', 'CPA', (137, 146)) ('DNA hypermethylation', 'MPA', (98, 118)) ('SDHB', 'Gene', '6390', (60, 64)) ('SDHB', 'Gene', (60, 64)) ('succinate accumulated', 'MPA', (35, 56)) ('led to', 'Reg', (91, 97)) ('knockout', 'Var', (65, 73)) ('chromaffin', 'Chemical', '-', (74, 84)) 118051 26294907 Studying SDHB and SDHD mutations in families with PGL, Gimenez-Roqueplo and colleagues showed that PGL tumors accumulated succinate and the SDH complex was inactive. ('accumulated', 'PosReg', (110, 121)) ('SDHB', 'Gene', '6390', (9, 13)) ('PGL', 'Phenotype', 'HP:0002668', (99, 102)) ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('PGL tumors', 'Disease', 'MESH:D010235', (99, 109)) ('tumors', 'Phenotype', 'HP:0002664', (103, 109)) ('succinate', 'MPA', (122, 131)) ('SDHB', 'Gene', (9, 13)) ('SDHD', 'Gene', '6392', (18, 22)) ('mutations', 'Var', (23, 32)) ('succinate', 'Chemical', 'MESH:D019802', (122, 131)) ('PGL tumors', 'Disease', (99, 109)) ('SDHD', 'Gene', (18, 22)) ('PGL', 'Phenotype', 'HP:0002668', (50, 53)) 118054 26294907 In a study using biopsy material from a patient with a deleterious homozygous SDHA mutation, SDHA mutant fibroblasts showed increased HIF1alpha translocation into the nucleus. ('patient', 'Species', '9606', (40, 47)) ('HIF1alpha', 'Gene', (134, 143)) ('SDHA', 'Gene', '6389', (93, 97)) ('increased', 'PosReg', (124, 133)) ('translocation into the nucleus', 'MPA', (144, 174)) ('HIF1alpha', 'Gene', '3091', (134, 143)) ('SDHA', 'Gene', '6389', (78, 82)) ('SDHA', 'Gene', (93, 97)) ('mutation', 'Var', (83, 91)) ('SDHA', 'Gene', (78, 82)) ('mutant', 'Var', (98, 104)) 118055 26294907 In gene expression studies using micro-array and transcriptional profiling analyses, it was revealed that SDH-mutant PGLs expressed increased levels of hypoxia related genes compared to sporadic and VHL associated PGLs. ('PGL', 'Phenotype', 'HP:0002668', (214, 217)) ('SDH-mutant', 'Gene', (106, 116)) ('VHL', 'Gene', '7428', (199, 202)) ('increased', 'PosReg', (132, 141)) ('VHL', 'Gene', (199, 202)) ('PGL', 'Phenotype', 'HP:0002668', (117, 120)) ('hypoxia', 'Disease', (152, 159)) ('hypoxia', 'Disease', 'MESH:D000860', (152, 159)) ('SDH-mutant', 'Var', (106, 116)) 118072 26294907 Consistent with ALKBH5 as a dioxygenase that reverses this RNA methylation, depletion of ALKBH5 has been shown to cause accumulation of m6A in mRNA and to be associated with male infertility. ('m6A in mRNA', 'MPA', (136, 147)) ('male infertility', 'Phenotype', 'HP:0003251', (174, 190)) ('associated with', 'Reg', (158, 173)) ('accumulation', 'PosReg', (120, 132)) ('male infertility', 'Disease', 'MESH:D007248', (174, 190)) ('ALKBH5', 'Gene', '54890', (16, 22)) ('infertility', 'Phenotype', 'HP:0000789', (179, 190)) ('male infertility', 'Disease', (174, 190)) ('ALKBH5', 'Gene', (16, 22)) ('ALKBH5', 'Gene', '54890', (89, 95)) ('m6A', 'Chemical', 'MESH:C010223', (136, 139)) ('ALKBH5', 'Gene', (89, 95)) ('depletion', 'Var', (76, 85)) ('oxygen', 'Chemical', 'MESH:D010100', (30, 36)) 118073 26294907 m6A in mRNA can also play a role in RNA degradation. ('RNA degradation', 'MPA', (36, 51)) ('m6A', 'Chemical', 'MESH:C010223', (0, 3)) ('m6A', 'Var', (0, 3)) 118077 26294907 Inhibition of hABHs is predicted to result in increased DNA methylation with potentially mutagenic consequences. ('hABHs', 'Chemical', '-', (14, 19)) ('increased', 'PosReg', (46, 55)) ('hABHs', 'Gene', (14, 19)) ('Inhibition', 'Var', (0, 10)) ('DNA methylation', 'MPA', (56, 71)) 118081 26294907 Parallel to the succinate accumulation hypothesis, defects in three other TCA cycle enzymes have been linked to competitive inhibition of alpha-KG-dependent dioxygenases and tumor formation: isocitrate dehydrogenase (IDH), fumarate hydratase (FH), and malate dehydrogenase 2 (MDH2). ('isocitrate dehydrogenase', 'Gene', (191, 215)) ('defects', 'Var', (51, 58)) ('fumarate hydratase', 'Gene', '2271', (223, 241)) ('IDH', 'Gene', (217, 220)) ('malate dehydrogenase 2', 'Gene', (252, 274)) ('tumor', 'Phenotype', 'HP:0002664', (174, 179)) ('TCA', 'Chemical', 'MESH:D014233', (74, 77)) ('alpha-KG', 'Chemical', 'MESH:D007656', (138, 146)) ('IDH', 'Gene', '3417', (217, 220)) ('succinate', 'Chemical', 'MESH:D019802', (16, 25)) ('MDH2', 'Gene', '4191', (276, 280)) ('malate dehydrogenase 2', 'Gene', '4191', (252, 274)) ('FH', 'Gene', '2271', (243, 245)) ('inhibition', 'NegReg', (124, 134)) ('isocitrate dehydrogenase', 'Gene', '3417', (191, 215)) ('alpha-KG-dependent dioxygenases', 'Enzyme', (138, 169)) ('fumarate hydratase', 'Gene', (223, 241)) ('linked', 'Reg', (102, 108)) ('tumor', 'Disease', (174, 179)) ('tumor', 'Disease', 'MESH:D009369', (174, 179)) ('oxygen', 'Chemical', 'MESH:D010100', (159, 165)) ('MDH2', 'Gene', (276, 280)) 118087 26294907 Unlike SDH mutations, somatic mutations of IDH result in a gain of function. ('IDH', 'Gene', '3417', (43, 46)) ('IDH', 'Gene', (43, 46)) ('mutations', 'Var', (30, 39)) ('gain of function', 'PosReg', (59, 75)) 118088 26294907 The majority of these mutations involved amino acid substitution at IDH1 codon 132 (~92% are missense mutations resulting in the R132H substitution). ('amino acid substitution', 'Var', (41, 64)) ('R132H', 'Mutation', 'rs121913500', (129, 134)) ('IDH1', 'Gene', (68, 72)) ('R132H', 'Var', (129, 134)) ('IDH1', 'Gene', '3417', (68, 72)) ('involved', 'Reg', (32, 40)) 118089 26294907 Remarkably, this change alters the enzyme chemistry from a dehydrogenase to a reductase that reduces alpha-KG to 2-hydroxyglutarate. ('change', 'Var', (17, 23)) ('alpha-KG to 2-hydroxyglutarate', 'Chemical', '-', (101, 131)) ('reduces', 'NegReg', (93, 100)) ('alters', 'Reg', (24, 30)) ('alpha-KG to 2-hydroxyglutarate', 'MPA', (101, 131)) 118093 26294907 Interestingly, even though these metabolites presumably affect the same dioxygenases, mutations in IDH1/2 are linked to glioma and acute myeloid leukemia, but not to PGL/pheochromocytoma. ('affect', 'Reg', (56, 62)) ('mutations', 'Var', (86, 95)) ('glioma', 'Phenotype', 'HP:0009733', (120, 126)) ('pheochromocytoma', 'Disease', (170, 186)) ('oxygen', 'Chemical', 'MESH:D010100', (74, 80)) ('acute myeloid leukemia', 'Disease', 'MESH:D015470', (131, 153)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (170, 186)) ('myeloid leukemia', 'Phenotype', 'HP:0012324', (137, 153)) ('IDH1/2', 'Gene', (99, 105)) ('linked', 'Reg', (110, 116)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (170, 186)) ('leukemia', 'Phenotype', 'HP:0001909', (145, 153)) ('acute myeloid leukemia', 'Phenotype', 'HP:0004808', (131, 153)) ('glioma', 'Disease', (120, 126)) ('PGL', 'Phenotype', 'HP:0002668', (166, 169)) ('acute myeloid leukemia', 'Disease', (131, 153)) ('IDH1/2', 'Gene', '3417;3418', (99, 105)) ('glioma', 'Disease', 'MESH:D005910', (120, 126)) 118094 26294907 Equally mysterious is the fact that no SDH mutations have been found in glioma and practically no IDH mutations have been found in PGL. ('glioma', 'Disease', (72, 78)) ('SDH', 'Gene', (39, 42)) ('glioma', 'Phenotype', 'HP:0009733', (72, 78)) ('glioma', 'Disease', 'MESH:D005910', (72, 78)) ('mutations', 'Var', (43, 52)) ('IDH', 'Gene', (98, 101)) ('PGL', 'Phenotype', 'HP:0002668', (131, 134)) ('IDH', 'Gene', '3417', (98, 101)) 118096 26294907 Like SDH, FH is a tumor suppressor, and loss of heterozygosity will predispose FH mutant carriers to develop disorders including renal cell cancer, cutaneous and uterine leiomyomas, and encephalopathies. ('uterine leiomyomas', 'Phenotype', 'HP:0000131', (162, 180)) ('renal cell cancer', 'Phenotype', 'HP:0005584', (129, 146)) ('loss of heterozygosity', 'Var', (40, 62)) ('FH', 'Gene', '2271', (10, 12)) ('tumor', 'Disease', (18, 23)) ('cutaneous and uterine leiomyomas', 'Phenotype', 'HP:0007620', (148, 180)) ('FH', 'Gene', '2271', (79, 81)) ('leiomyomas', 'Disease', 'MESH:D007889', (170, 180)) ('renal cell cancer', 'Disease', (129, 146)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) ('renal cell cancer', 'Disease', 'MESH:C538614', (129, 146)) ('tumor', 'Disease', 'MESH:D009369', (18, 23)) ('encephalopathies', 'Phenotype', 'HP:0001298', (186, 202)) ('leiomyomas', 'Disease', (170, 180)) ('encephalopathies', 'Disease', (186, 202)) ('cancer', 'Phenotype', 'HP:0002664', (140, 146)) ('encephalopathies', 'Disease', 'MESH:D001927', (186, 202)) ('mutant', 'Var', (82, 88)) 118097 26294907 Interestingly, a subset of patients with FH mutations develop PGL and pheochromocytoma. ('FH', 'Gene', '2271', (41, 43)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (70, 86)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (70, 86)) ('PGL', 'Phenotype', 'HP:0002668', (62, 65)) ('PGL', 'Disease', (62, 65)) ('patients', 'Species', '9606', (27, 35)) ('mutations', 'Var', (44, 53)) ('develop', 'Reg', (54, 61)) ('pheochromocytoma', 'Disease', (70, 86)) 118106 26294907 It has been reported that MDH2 mutation can result in 2-fold increase of malate and fumarate levels (Figure 5). ('malate', 'Chemical', 'MESH:C030298', (73, 79)) ('MDH2', 'Gene', (26, 30)) ('mutation', 'Var', (31, 39)) ('increase', 'PosReg', (61, 69)) ('fumarate', 'Chemical', 'MESH:D005650', (84, 92)) ('MDH2', 'Gene', '4191', (26, 30)) 118107 26294907 More importantly, MDH2 mutation has recently been linked to PGL. ('PGL', 'Phenotype', 'HP:0002668', (60, 63)) ('mutation', 'Var', (23, 31)) ('MDH2', 'Gene', '4191', (18, 22)) ('PGL', 'Disease', (60, 63)) ('MDH2', 'Gene', (18, 22)) ('linked', 'Reg', (50, 56)) 118108 26294907 Currently, the mechanism of tumorigenesis is unknown, but there is an obvious and suspicious similarity to the mechanism of SDH and FH mutations. ('tumor', 'Disease', (28, 33)) ('mutations', 'Var', (135, 144)) ('FH', 'Gene', '2271', (132, 134)) ('SDH', 'Gene', (124, 127)) ('tumor', 'Disease', 'MESH:D009369', (28, 33)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) 118109 26294907 Together, defects in TCA cycle enzymes with accumulation of dicarboxylic acid oncometabolite variants highlight the importance of continuing research in this field. ('variants', 'Var', (93, 101)) ('TCA', 'Chemical', 'MESH:D014233', (21, 24)) ('dicarboxylic acid', 'Chemical', 'MESH:D003998', (60, 77)) ('TCA cycle enzymes', 'Enzyme', (21, 38)) ('dicarboxylic acid', 'MPA', (60, 77)) ('defects', 'NegReg', (10, 17)) ('accumulation', 'PosReg', (44, 56)) 118110 26294907 It is puzzling and mysterious that these defects trigger a common pseudohypoxia pathway and aberrant epigenetic landscape yet have such distinctly different pathological outcomes. ('defects', 'Var', (41, 48)) ('pseudohypoxia', 'Disease', (66, 79)) ('aberrant', 'Var', (92, 100)) ('pseudohypoxia', 'Disease', 'None', (66, 79)) ('trigger', 'Reg', (49, 56)) ('epigenetic', 'MPA', (101, 111)) 118113 26294907 It is hypothesized that these mutations result in accumulation of metabolites that competitively inhibit alpha-KG-dependent dioxygenases. ('oxygen', 'Chemical', 'MESH:D010100', (126, 132)) ('inhibit', 'NegReg', (97, 104)) ('accumulation', 'PosReg', (50, 62)) ('alpha-KG', 'Chemical', 'MESH:D007656', (105, 113)) ('metabolites', 'MPA', (66, 77)) ('mutations', 'Var', (30, 39)) ('alpha-KG-dependent dioxygenases', 'Enzyme', (105, 136)) 118114 26294907 Because there are many enzymes in this family, their inhibition could have profound implications in a wide range of cell regulatory pathways including hypoxic response, collagen maturation, and epigenetic control (histone, DNA, and RNA methylation) of gene expression. ('epigenetic', 'Var', (194, 204)) ('histone', 'Chemical', '-', (214, 221)) ('inhibition', 'NegReg', (53, 63)) ('implications', 'Reg', (84, 96)) 118115 26294907 Thus, the succinate accumulation hypothesis for familial PGL has been inspirational in proposing part of a mechanism for loss of SDH function leading to tumorigenesis. ('tumor', 'Disease', 'MESH:D009369', (153, 158)) ('SDH', 'Gene', (129, 132)) ('PGL', 'Phenotype', 'HP:0002668', (57, 60)) ('loss', 'Var', (121, 125)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('tumor', 'Disease', (153, 158)) ('succinate', 'Chemical', 'MESH:D019802', (10, 19)) 118315 24653738 Moreover, similar to our results, a recent study showed that prolonged QTc was independently associated with SCD among subjects with LVH, and merits further evaluation as a predictor of SCD in LVH. ('SCD', 'Disease', 'MESH:C536778', (186, 189)) ('SCD', 'Phenotype', 'HP:0001645', (109, 112)) ('SCD', 'Disease', 'MESH:C536778', (109, 112)) ('SCD', 'Disease', (186, 189)) ('LVH', 'Phenotype', 'HP:0001712', (193, 196)) ('SCD', 'Disease', (109, 112)) ('prolonged QTc', 'Phenotype', 'HP:0005184', (61, 74)) ('LVH', 'Phenotype', 'HP:0001712', (133, 136)) ('QTc', 'Gene', (71, 74)) ('associated with', 'Reg', (93, 108)) ('prolonged', 'Var', (61, 70)) ('SCD', 'Phenotype', 'HP:0001645', (186, 189)) 118392 24476517 An extra-adrenal location, large size, and the presence of SDHB mutations are all important risk factors for metastatic spread . ('metastatic spread', 'CPA', (109, 126)) ('SDHB', 'Gene', '6390', (59, 63)) ('mutations', 'Var', (64, 73)) ('presence', 'Var', (47, 55)) ('SDHB', 'Gene', (59, 63)) 118393 24476517 High rates of malignancy in tumors associated with SDHB mutations can be fully accounted by both their typically extra-adrenal location and large size . ('mutations', 'Var', (56, 65)) ('malignancy in tumors', 'Disease', 'MESH:D018198', (14, 34)) ('tumors', 'Phenotype', 'HP:0002664', (28, 34)) ('malignancy in tumors', 'Disease', (14, 34)) ('SDHB', 'Gene', '6390', (51, 55)) ('SDHB', 'Gene', (51, 55)) ('tumor', 'Phenotype', 'HP:0002664', (28, 33)) 118395 24476517 The pathology report should state the total number of lymph nodes examined, the number of nodes with metastases, and nodal involvement should be reported as macrometastasis (>2mm) or micrometastasis (<=2mm and including isolated tumor cells) based on the size of the metastatic deposit. ('<=2mm', 'Var', (200, 205)) ('nodal', 'Gene', (117, 122)) ('nodal', 'Gene', '4838', (117, 122)) ('tumor', 'Disease', 'MESH:D009369', (229, 234)) ('metastases', 'Disease', (101, 111)) ('tumor', 'Phenotype', 'HP:0002664', (229, 234)) ('tumor', 'Disease', (229, 234)) ('metastases', 'Disease', 'MESH:D009362', (101, 111)) ('macrometastasis', 'Disease', (157, 172)) 118397 24476517 Positivity for tyrosine hydroxylase, which is the rate limiting enzyme in the synthesis of catecholamines , is very helpful to distinguish paragangliomas from other neuroendocrine carcinomas, which can also be negative for cytokeratins . ('neuroendocrine carcinomas', 'Phenotype', 'HP:0100634', (165, 190)) ('catecholamines', 'Chemical', 'MESH:D002395', (91, 105)) ('paraganglioma', 'Phenotype', 'HP:0002668', (139, 152)) ('carcinomas', 'Phenotype', 'HP:0030731', (180, 190)) ('paragangliomas', 'Disease', 'MESH:D010235', (139, 153)) ('neuroendocrine carcinomas', 'Disease', 'MESH:D018278', (165, 190)) ('paragangliomas', 'Disease', (139, 153)) ('Positivity', 'Var', (0, 10)) ('paragangliomas', 'Phenotype', 'HP:0002668', (139, 153)) ('neuroendocrine carcinomas', 'Disease', (165, 190)) 118404 24476517 Loss of SDHB expression is regarded as a surrogate marker for some of the familial paraganglioma syndromes caused by SDHx mutations , therefore immunohistochemical testing for SDHB has become a part of the routine assessment of these lesions in many centers. ('SDHB', 'Gene', '6390', (176, 180)) ('caused', 'Reg', (107, 113)) ('SDHB', 'Gene', (176, 180)) ('SDHB', 'Gene', '6390', (8, 12)) ('paraganglioma', 'Phenotype', 'HP:0002668', (83, 96)) ('familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (74, 106)) ('SDHB', 'Gene', (8, 12)) ('Loss', 'NegReg', (0, 4)) ('mutations', 'Var', (122, 131)) ('familial paraganglioma syndromes', 'Disease', (74, 106)) ('SDHx', 'Chemical', '-', (117, 121)) ('SDHx', 'Gene', (117, 121)) ('man', 'Species', '9606', (245, 248)) 118406 24476517 Recently, it was also demonstrated that SDHA immunohistochemistry is also very useful to reveal the presence of SDHA germline mutations ; PGLs associated with germline SDHA mutation show negative staining for SDHA as well as SDHB. ('SDHA', 'Gene', (209, 213)) ('SDHB', 'Gene', '6390', (225, 229)) ('SDHB', 'Gene', (225, 229)) ('SDHA', 'Gene', (168, 172)) ('SDHA', 'Gene', '6389', (40, 44)) ('SDHA', 'Gene', '6389', (112, 116)) ('SDHA', 'Gene', '6389', (209, 213)) ('SDHA', 'Gene', (40, 44)) ('negative', 'NegReg', (187, 195)) ('SDHA', 'Gene', (112, 116)) ('SDHA', 'Gene', '6389', (168, 172)) ('mutation', 'Var', (173, 181)) 118408 24476517 Although other predisposing genetic syndromes are not usually associated with adrenal medullary hyperplasia, it is noteworthy that a 61-year-old man with an SDHB mutation was found to have bilateral adrenal medullary hyperplasia characterized by an increased cortex to medulla ratio of 1:1 in both glands . ('hyperplasia', 'Disease', 'MESH:D006965', (217, 228)) ('adrenal medullary hyperplasia', 'Phenotype', 'HP:0008239', (78, 107)) ('hyperplasia', 'Disease', 'MESH:D006965', (96, 107)) ('adrenal medullary hyperplasia', 'Phenotype', 'HP:0008239', (199, 228)) ('mutation', 'Var', (162, 170)) ('SDHB', 'Gene', '6390', (157, 161)) ('man', 'Species', '9606', (145, 148)) ('SDHB', 'Gene', (157, 161)) ('hyperplasia', 'Disease', (217, 228)) ('hyperplasia', 'Disease', (96, 107)) 118418 24012403 Knowledge of mutations in sporadic cancer, such as BRAF in thyroid cancer, has led to rapid progress in small-molecule kinase inhibitor strategies. ('rat', 'Species', '10116', (138, 141)) ('cancer', 'Disease', 'MESH:D009369', (67, 73)) ('cancer', 'Disease', (67, 73)) ('thyroid cancer', 'Disease', 'MESH:D013964', (59, 73)) ('cancer', 'Phenotype', 'HP:0002664', (35, 41)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (59, 73)) ('cancer', 'Phenotype', 'HP:0002664', (67, 73)) ('cancer', 'Disease', 'MESH:D009369', (35, 41)) ('mutations', 'Var', (13, 22)) ('cancer', 'Disease', (35, 41)) ('thyroid cancer', 'Disease', (59, 73)) 118431 24012403 Apart from its physiologic role in thyroid differentiation, growth, and function, the MAPK pathway can also contribute to development of thyroid cancer by aberrant activation at several points. ('thyroid cancer', 'Disease', 'MESH:D013964', (137, 151)) ('MAPK pathway', 'Pathway', (86, 98)) ('aberrant', 'Var', (155, 163)) ('cancer', 'Phenotype', 'HP:0002664', (145, 151)) ('activation', 'PosReg', (164, 174)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (137, 151)) ('thyroid cancer', 'Disease', (137, 151)) ('contribute', 'Reg', (108, 118)) 118432 24012403 In sporadic and hereditary medullary thyroid cancer (MTC), mutant RET activates RAS, causing constitutive MAPK signaling, while mutations in both RET and RAS are common in follicular thyroid cancer. ('thyroid cancer', 'Phenotype', 'HP:0002890', (183, 197)) ('mutant', 'Var', (59, 65)) ('RET', 'Gene', (66, 69)) ('thyroid cancer', 'Disease', 'MESH:D013964', (37, 51)) ('RET', 'Gene', (146, 149)) ('causing', 'Reg', (85, 92)) ('activates', 'PosReg', (70, 79)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (27, 51)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (37, 51)) ('cancer', 'Phenotype', 'HP:0002664', (191, 197)) ('MTC', 'Phenotype', 'HP:0002865', (53, 56)) ('follicular thyroid cancer', 'Disease', (172, 197)) ('constitutive MAPK signaling', 'MPA', (93, 120)) ('RAS', 'Protein', (80, 83)) ('RET', 'Gene', '5979', (66, 69)) ('follicular thyroid cancer', 'Disease', 'MESH:C572845', (172, 197)) ('cancer', 'Phenotype', 'HP:0002664', (45, 51)) ('RET', 'Gene', '5979', (146, 149)) ('thyroid cancer', 'Disease', (37, 51)) ('thyroid cancer', 'Disease', 'MESH:D013964', (183, 197)) ('follicular thyroid cancer', 'Phenotype', 'HP:0006731', (172, 197)) 118433 24012403 Downstream in the pathway, mutation in the BRAF serine/threonine kinase has emerged as the most common genetic abnormality in papillary thyroid cancer (PTC), and is also present in anaplastic thyroid cancer (ATC). ('cancer', 'Phenotype', 'HP:0002664', (200, 206)) ('papillary thyroid cancer', 'Disease', 'MESH:D000077273', (126, 150)) ('mutation', 'Var', (27, 35)) ('anaplastic thyroid cancer', 'Disease', (181, 206)) ('cancer', 'Phenotype', 'HP:0002664', (144, 150)) ('PTC', 'Gene', (152, 155)) ('PTC', 'Phenotype', 'HP:0002895', (152, 155)) ('PTC', 'Gene', '5979', (152, 155)) ('ATC', 'Phenotype', 'HP:0011779', (208, 211)) ('papillary thyroid cancer', 'Disease', (126, 150)) ('anaplastic thyroid cancer', 'Disease', 'MESH:D065646', (181, 206)) ('abnormality in papillary', 'Phenotype', 'HP:0025445', (111, 135)) ('genetic abnormality', 'Disease', 'MESH:D030342', (103, 122)) ('anaplastic thyroid cancer', 'Phenotype', 'HP:0011779', (181, 206)) ('BRAF', 'Gene', (43, 47)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (126, 150)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (136, 150)) ('genetic abnormality', 'Disease', (103, 122)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (192, 206)) 118434 24012403 In total, mutation in some element of the MAPK pathway is present in over 70% of thyroid cancers, marking this as the central cellular control element in thyroid oncogenesis. ('present', 'Reg', (58, 65)) ('thyroid cancers', 'Disease', 'MESH:D013964', (81, 96)) ('cancers', 'Phenotype', 'HP:0002664', (89, 96)) ('mutation', 'Var', (10, 18)) ('MAPK', 'Gene', (42, 46)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (81, 95)) ('thyroid cancers', 'Disease', (81, 96)) ('cancer', 'Phenotype', 'HP:0002664', (89, 95)) 118442 24012403 In 1993, linkage narrowed the MEN2A locus to a small area near the RET proto-oncogene, and RET was identified as the causative gene in MEN2A and FMTC, with two groups reporting heterozygous germline mutations in affected patients, but not in normal controls and unaffected family members. ('RET', 'Gene', (91, 94)) ('MEN2A', 'Gene', '5979', (30, 35)) ('patients', 'Species', '9606', (221, 229)) ('MTC', 'Phenotype', 'HP:0002865', (146, 149)) ('RET', 'Gene', '5979', (67, 70)) ('MEN2A', 'Gene', '5979', (135, 140)) ('RET', 'Gene', '5979', (91, 94)) ('MEN2A', 'Gene', (135, 140)) ('germline', 'Var', (190, 198)) ('RET', 'Gene', (67, 70)) ('MEN2A', 'Gene', (30, 35)) 118443 24012403 Description of RET mutations in MEN2B kindreds followed soon thereafter. ('mutations', 'Var', (19, 28)) ('RET', 'Gene', '5979', (15, 18)) ('MEN2B', 'Gene', (32, 37)) ('RET', 'Gene', (15, 18)) ('MEN2B', 'Gene', '5979', (32, 37)) 118444 24012403 Genetic tests to presymptomatically identify affected individuals in families with MEN2 and FMTC became more directed after identification of these mutations. ('MEN2', 'Gene', (83, 87)) ('mutations', 'Var', (148, 157)) ('MTC', 'Phenotype', 'HP:0002865', (93, 96)) ('MEN', 'Species', '9606', (83, 86)) 118445 24012403 became the first to use a genetic test to recommend prophylactic surgery, performing total thyroidectomy and parathyroidectomy in asymptomatic patients within MEN2A families found to carry RET mutations. ('RET', 'Gene', '5979', (189, 192)) ('rat', 'Species', '10116', (111, 114)) ('MEN2A', 'Gene', '5979', (159, 164)) ('patients', 'Species', '9606', (143, 151)) ('mutations', 'Var', (193, 202)) ('MEN2A', 'Gene', (159, 164)) ('RET', 'Gene', (189, 192)) 118448 24012403 reported that MEN2A families with parathyroid hyperplasia and pheochromocytoma carried the C634R RET mutation much more frequently than families lacking these disease features. ('pheochromocytoma', 'Disease', 'MESH:D010673', (62, 78)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (62, 78)) ('carried', 'Reg', (79, 86)) ('MEN2A', 'Gene', (14, 19)) ('MEN2A', 'Gene', '5979', (14, 19)) ('parathyroid hyperplasia', 'Disease', (34, 57)) ('RET', 'Gene', '5979', (97, 100)) ('parathyroid hyperplasia', 'Phenotype', 'HP:0008208', (34, 57)) ('C634R', 'Var', (91, 96)) ('C634R', 'Mutation', 'rs75076352', (91, 96)) ('RET', 'Gene', (97, 100)) ('pheochromocytoma', 'Disease', (62, 78)) ('parathyroid hyperplasia', 'Disease', 'MESH:D006965', (34, 57)) 118450 24012403 This revealed that codon 634 mutations accounted for 85% of MEN2A cases, and that the C634R mutation was significantly more likely to lead to hyperparathyroidism and pheochromocytoma. ('MEN2A', 'Gene', (60, 65)) ('lead to', 'Reg', (134, 141)) ('hyperparathyroidism and pheochromocytoma', 'Disease', 'MESH:D010673', (142, 182)) ('C634R', 'Mutation', 'rs75076352', (86, 91)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (166, 182)) ('codon 634 mutations', 'Var', (19, 38)) ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (142, 161)) ('C634R', 'Var', (86, 91)) ('MEN2A', 'Gene', '5979', (60, 65)) 118451 24012403 Families with the less aggressive FMTC had mutations in several codons including 634, but none carried the C634R mutation. ('634', 'Var', (81, 84)) ('C634R', 'Mutation', 'rs75076352', (107, 112)) ('MTC', 'Phenotype', 'HP:0002865', (35, 38)) ('mutations', 'Var', (43, 52)) ('C634R', 'Var', (107, 112)) 118452 24012403 Finally, 75 of 79 MEN2B families had the same M918T mutation. ('MEN2B', 'Gene', (18, 23)) ('M918T', 'Mutation', 'rs74799832', (46, 51)) ('MEN2B', 'Gene', '5979', (18, 23)) ('M918T', 'Var', (46, 51)) 118454 24012403 For the highest risk MEN2B mutations, thyroidectomy is recommended as soon as possible and ideally before 1 month of age, with central node dissection recommended if surgery is delayed beyond 1 year of age (Table 2). ('mutations', 'Var', (27, 36)) ('MEN2B', 'Gene', '5979', (21, 26)) ('MEN2B', 'Gene', (21, 26)) 118456 24012403 Certain MEN2A mutations, such as C609Y, lead to MTC usually only after age 20-40, and thyroidectomy between ages 5 and 10 for these patients can be acceptable under the ATA guidelines. ('C609Y', 'Mutation', 'rs77939446', (33, 38)) ('lead to', 'Reg', (40, 47)) ('MTC', 'Phenotype', 'HP:0002865', (48, 51)) ('MTC', 'Disease', (48, 51)) ('C609Y', 'Var', (33, 38)) ('MEN2A', 'Gene', (8, 13)) ('MEN2A', 'Gene', '5979', (8, 13)) ('patients', 'Species', '9606', (132, 140)) 118457 24012403 Still, rare examples of MTC in very young patients with mutations thought to confer lower risk exist, and therefore early thyroidectomy (before age 5) remains a reasonable option for these groups, .With the high sensitivity and specificity of genetic testing, and the fact that 98% of MEN2 patients have a known RET mutation, genetic testing is now the standard to determine prophylactic surgical therapy in MEN2. ('MEN', 'Species', '9606', (408, 411)) ('patients', 'Species', '9606', (290, 298)) ('MTC', 'Phenotype', 'HP:0002865', (24, 27)) ('RET', 'Gene', (312, 315)) ('MEN2', 'Gene', (285, 289)) ('MEN', 'Species', '9606', (285, 288)) ('RET', 'Gene', '5979', (312, 315)) ('patients', 'Species', '9606', (42, 50)) ('mutation', 'Var', (316, 324)) 118458 24012403 RET mutations are found with high frequency in sporadic MTC. ('mutations', 'Var', (4, 13)) ('RET', 'Gene', '5979', (0, 3)) ('MTC', 'Phenotype', 'HP:0002865', (56, 59)) ('RET', 'Gene', (0, 3)) 118459 24012403 A study of 100 sporadic MTC patients with 10 year median follow-up identified somatic RET mutations in 43%, and found that their presence strongly correlated with lymph node and distant metastases (70 and 30% vs. 26 and 12% in RET+ and - patients, p<0.0001). ('RET', 'Gene', '5979', (86, 89)) ('mutations', 'Var', (90, 99)) ('RET', 'Gene', '5979', (227, 230)) ('metastases', 'Disease', (186, 196)) ('MTC', 'Phenotype', 'HP:0002865', (24, 27)) ('correlated with', 'Reg', (147, 162)) ('metastases', 'Disease', 'MESH:D009362', (186, 196)) ('RET', 'Gene', (86, 89)) ('RET', 'Gene', (227, 230)) ('patients', 'Species', '9606', (28, 36)) ('patients', 'Species', '9606', (238, 246)) 118460 24012403 Of patients with mutations, 79% had the same M918T mutation found in most MEN2B cases. ('M918T', 'Var', (45, 50)) ('patients', 'Species', '9606', (3, 11)) ('MEN2B', 'Gene', (74, 79)) ('MEN2B', 'Gene', '5979', (74, 79)) ('mutations', 'Var', (17, 26)) ('M918T', 'Mutation', 'rs74799832', (45, 50)) 118461 24012403 Sporadic RET mutations also independently predicted worse outcomes, with significantly reduced disease-free, and overall survival. ('reduced', 'NegReg', (87, 94)) ('RET', 'Gene', '5979', (9, 12)) ('disease-free', 'CPA', (95, 107)) ('overall survival', 'CPA', (113, 129)) ('mutations', 'Var', (13, 22)) ('RET', 'Gene', (9, 12)) 118466 24012403 In 2002, a genome-level screen for cancer-related mutations found activating somatic BRAF mutations in many human tumor cell types, including 59% of melanoma lines studied. ('tumor', 'Disease', 'MESH:D009369', (114, 119)) ('mutations', 'Var', (90, 99)) ('melanoma', 'Disease', 'MESH:D008545', (149, 157)) ('melanoma', 'Phenotype', 'HP:0002861', (149, 157)) ('tumor', 'Phenotype', 'HP:0002664', (114, 119)) ('melanoma', 'Disease', (149, 157)) ('cancer', 'Phenotype', 'HP:0002664', (35, 41)) ('BRAF', 'Gene', (85, 89)) ('activating', 'PosReg', (66, 76)) ('tumor', 'Disease', (114, 119)) ('human', 'Species', '9606', (108, 113)) ('cancer', 'Disease', 'MESH:D009369', (35, 41)) ('cancer', 'Disease', (35, 41)) 118467 24012403 Although over 30 BRAF mutations have been described, a single base-pair substitution (T1799A) replacing valine with glutamate at residue 600 (V600E) is both the most common and most potent mutation, leading to 700-fold increased kinase activity, constitutive activation of the MAPK pathway, transformation of cells in vitro, and growth of tumors in mice in vivo Soon after the initial report of BRAF mutations in human cancer, the V600E mutation was reported in a high percentage of human papillary thyroid cancers. ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (489, 513)) ('kinase activity', 'MPA', (229, 244)) ('papillary thyroid cancers', 'Phenotype', 'HP:0002895', (489, 514)) ('cancer', 'Disease', 'MESH:D009369', (419, 425)) ('increased', 'PosReg', (219, 228)) ('tumors', 'Phenotype', 'HP:0002664', (339, 345)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (499, 513)) ('T1799A', 'Mutation', 'rs113488022', (86, 92)) ('cancer', 'Disease', (507, 513)) ('human', 'Species', '9606', (413, 418)) ('human', 'Species', '9606', (483, 488)) ('papillary thyroid cancers', 'Disease', 'MESH:D000077273', (489, 514)) ('cancer', 'Phenotype', 'HP:0002664', (507, 513)) ('tumor', 'Phenotype', 'HP:0002664', (339, 344)) ('valine with glutamate at residue 600', 'Mutation', 'rs113488022', (104, 140)) ('tumors', 'Disease', (339, 345)) ('papillary thyroid cancers', 'Disease', (489, 514)) ('V600E', 'Mutation', 'rs113488022', (431, 436)) ('cancers', 'Phenotype', 'HP:0002664', (507, 514)) ('mutations', 'Var', (22, 31)) ('MAPK pathway', 'Pathway', (277, 289)) ('cancer', 'Disease', (419, 425)) ('mice', 'Species', '10090', (349, 353)) ('V600E', 'Mutation', 'rs113488022', (142, 147)) ('activation', 'PosReg', (259, 269)) ('tumors', 'Disease', 'MESH:D009369', (339, 345)) ('cancer', 'Disease', 'MESH:D009369', (507, 513)) ('cancer', 'Phenotype', 'HP:0002664', (419, 425)) ('V600E', 'Var', (431, 436)) ('to 7', 'Species', '1214577', (207, 211)) 118468 24012403 found the BRAF mutation in 28/78 (36%) of adult, non-radiation exposed PTC specimens, while RET and RAS mutations accounted for only 16% of cases each. ('mutation', 'Var', (15, 23)) ('PTC', 'Gene', (71, 74)) ('PTC', 'Gene', '5979', (71, 74)) ('RET', 'Gene', (92, 95)) ('PTC', 'Phenotype', 'HP:0002895', (71, 74)) ('BRAF', 'Gene', (10, 14)) ('RET', 'Gene', '5979', (92, 95)) 118469 24012403 Concurrently, another group reported the V600E mutation in 24/35 (69%) of PTC specimens in a screen of 476 samples from diverse types of primary tumors. ('primary tumors', 'Disease', (137, 151)) ('PTC', 'Gene', (74, 77)) ('primary tumors', 'Disease', 'MESH:D009369', (137, 151)) ('V600E', 'Var', (41, 46)) ('tumor', 'Phenotype', 'HP:0002664', (145, 150)) ('PTC', 'Gene', '5979', (74, 77)) ('tumors', 'Phenotype', 'HP:0002664', (145, 151)) ('PTC', 'Phenotype', 'HP:0002895', (74, 77)) ('V600E', 'Mutation', 'rs113488022', (41, 46)) 118470 24012403 BRAF mutation was determined to occur more frequently in tall cell and less commonly in follicular variants of PTC, and a recent meta-analysis established a 45% overall prevalence of the V600E mutation in papillary thyroid cancer (1,118 of 2,470 published cases). ('PTC', 'Gene', (111, 114)) ('PTC', 'Gene', '5979', (111, 114)) ('cancer', 'Phenotype', 'HP:0002664', (223, 229)) ('V600E', 'Mutation', 'rs113488022', (187, 192)) ('PTC', 'Phenotype', 'HP:0002895', (111, 114)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (205, 229)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (215, 229)) ('V600E', 'Var', (187, 192)) ('papillary thyroid cancer', 'Disease', (205, 229)) ('papillary thyroid cancer', 'Disease', 'MESH:D000077273', (205, 229)) 118471 24012403 While medullary thyroid cancers do not carry BRAF mutations, 24-40% of anaplastic thyroid cancers do, and BRAF mutations are common in poorly differentiated, recurrent, and radioiodine-resistant thyroid cancers. ('common', 'Reg', (125, 131)) ('medullary thyroid cancer', 'Phenotype', 'HP:0002865', (6, 30)) ('cancer', 'Phenotype', 'HP:0002664', (90, 96)) ('anaplastic thyroid cancers', 'Phenotype', 'HP:0011779', (71, 97)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (16, 30)) ('anaplastic thyroid cancer', 'Disease', (71, 96)) ('thyroid cancers', 'Disease', (16, 31)) ('mutations', 'Var', (111, 120)) ('cancer', 'Phenotype', 'HP:0002664', (24, 30)) ('thyroid cancers', 'Disease', 'MESH:D013964', (195, 210)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (195, 209)) ('cancers', 'Phenotype', 'HP:0002664', (24, 31)) ('thyroid cancers', 'Disease', 'MESH:D013964', (82, 97)) ('medullary thyroid cancers', 'Phenotype', 'HP:0002865', (6, 31)) ('anaplastic thyroid cancer', 'Disease', 'MESH:D065646', (71, 96)) ('thyroid cancers', 'Disease', 'MESH:D013964', (16, 31)) ('anaplastic thyroid cancer', 'Phenotype', 'HP:0011779', (71, 96)) ('cancer', 'Phenotype', 'HP:0002664', (203, 209)) ('radioiodine', 'Chemical', 'MESH:C000614965', (173, 184)) ('thyroid cancers', 'Disease', (195, 210)) ('cancers', 'Phenotype', 'HP:0002664', (90, 97)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (82, 96)) ('cancers', 'Phenotype', 'HP:0002664', (203, 210)) ('thyroid cancers', 'Disease', (82, 97)) 118472 24012403 Determination of the crystal structure of mutant BRAF protein showed how the V600E mutation, nestled between activating phosphorylation sites at T599 and S602, disrupts the hydrophobic interactions that stabilize the inactive form of the protein, and mimics the conformation of a phosphorylated state. ('stabilize', 'MPA', (203, 212)) ('inactive form', 'MPA', (217, 230)) ('S602', 'Var', (154, 158)) ('V600E', 'Mutation', 'rs113488022', (77, 82)) ('hydrophobic interactions', 'MPA', (173, 197)) ('protein', 'Protein', (238, 245)) ('V600E', 'Var', (77, 82)) ('BRAF', 'Gene', (49, 53)) ('disrupts', 'NegReg', (160, 168)) 118473 24012403 This change creates a pseudo-phosphorylated conformation and leads to constitutive pathway activation and tumorigenic behavior. ('constitutive pathway', 'Pathway', (70, 90)) ('pseudo-phosphorylated conformation', 'MPA', (22, 56)) ('activation', 'PosReg', (91, 101)) ('tumor', 'Disease', 'MESH:D009369', (106, 111)) ('tumor', 'Phenotype', 'HP:0002664', (106, 111)) ('creates', 'Reg', (12, 19)) ('tumor', 'Disease', (106, 111)) ('change', 'Var', (5, 11)) 118474 24012403 Consistent with this model, invasiveness of thyroid cancer cell cultures expressing BRAF V600E was found to require signaling via the MAP kinase pathway. ('MAP', 'Pathway', (134, 137)) ('invasiveness of thyroid cancer', 'Disease', 'MESH:D013964', (28, 58)) ('cancer', 'Phenotype', 'HP:0002664', (52, 58)) ('BRAF V600E', 'Var', (84, 94)) ('V600E', 'Mutation', 'rs113488022', (89, 94)) ('invasiveness of thyroid cancer', 'Disease', (28, 58)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (44, 58)) 118475 24012403 Thyroid cells with the V600E mutation also show reduced markers of differentiation. ('V600E', 'Mutation', 'rs113488022', (23, 28)) ('reduced', 'NegReg', (48, 55)) ('V600E', 'Var', (23, 28)) ('markers of differentiation', 'CPA', (56, 82)) 118476 24012403 Using inducible BRAF V600E mutant rat thyroid cell lines, Mitsutake and colleagues showed suppressed expression of genes necessary for iodine handling and thyroid differentiation, such as thyrotropin receptor (TSHR), sodium-iodine symporter (NIS), and thyroglobulin (Tg), as well as increased chromosomal instability. ('mutant', 'Var', (27, 33)) ('increased', 'PosReg', (283, 292)) ('V600E', 'Mutation', 'rs113488022', (21, 26)) ('thyroglobulin', 'Gene', '24826', (252, 265)) ('BRAF', 'Gene', (16, 20)) ('TSHR', 'Gene', (210, 214)) ('sodium-iodine', 'Chemical', '-', (217, 230)) ('NIS', 'Chemical', 'MESH:D009532', (242, 245)) ('thyrotropin receptor', 'Gene', (188, 208)) ('chromosomal instability', 'CPA', (293, 316)) ('iodine', 'Chemical', 'MESH:D007455', (224, 230)) ('iodine', 'Chemical', 'MESH:D007455', (135, 141)) ('TSHR', 'Gene', '25360', (210, 214)) ('increased chromosomal instability', 'Phenotype', 'HP:0040012', (283, 316)) ('thyroglobulin', 'Gene', (252, 265)) ('thyrotropin receptor', 'Gene', '25360', (188, 208)) ('rat', 'Species', '10116', (34, 37)) ('suppressed', 'NegReg', (90, 100)) ('expression', 'MPA', (101, 111)) 118480 24012403 Similarly, Liu showed that while a MEK kinase inhibitor led to reduced invasiveness and cell cycle arrest in thyroid lines harboring BRAF mutations, this effect was potentiated by concurrent blockade of the NF-kappaB pathway. ('invasiveness', 'Disease', (71, 83)) ('NF-kappaB', 'Gene', '4790', (207, 216)) ('NF-kappaB', 'Gene', (207, 216)) ('reduced', 'NegReg', (63, 70)) ('MEK', 'Gene', (35, 38)) ('cell cycle arrest', 'Phenotype', 'HP:0011018', (88, 105)) ('MEK', 'Gene', '5609', (35, 38)) ('BRAF', 'Gene', (133, 137)) ('blockade', 'NegReg', (191, 199)) ('potentiated', 'PosReg', (165, 176)) ('cell cycle arrest', 'CPA', (88, 105)) ('invasiveness', 'Disease', 'MESH:D009362', (71, 83)) ('mutations', 'Var', (138, 147)) 118482 24012403 In contrast, BRAF V600E is always active, and forms homo or heterodimers in the absence of RAS signaling, and can additionally activate MEK as a monomer. ('BRAF V600E', 'Var', (13, 23)) ('homo', 'MPA', (52, 56)) ('activate', 'PosReg', (127, 135)) ('MEK', 'Gene', (136, 139)) ('MEK', 'Gene', '5609', (136, 139)) ('heterodimers', 'MPA', (60, 72)) ('V600E', 'Mutation', 'rs113488022', (18, 23)) 118483 24012403 Monomers and homodimers of mutant BRAF as well as heterodimers with wild-type RAF proteins may participate in MEK-independent signaling with the PI3K/AKT/mTOR, NF-kappaB, and other pathways. ('NF-kappaB', 'Gene', (160, 169)) ('mutant', 'Var', (27, 33)) ('BRAF', 'Gene', (34, 38)) ('AKT', 'Gene', (150, 153)) ('AKT', 'Gene', '207', (150, 153)) ('participate', 'Reg', (95, 106)) ('MEK', 'Gene', (110, 113)) ('MEK', 'Gene', '5609', (110, 113)) ('NF-kappaB', 'Gene', '4790', (160, 169)) ('mTOR', 'Gene', (154, 158)) ('mTOR', 'Gene', '2475', (154, 158)) 118485 24012403 As data accumulated to elucidate the molecular effects of the BRAF V600E mutation in thyroid cancer, clinical data has similarly accrued to support a picture of uncontrolled pro-malignant signaling. ('V600E', 'Mutation', 'rs113488022', (67, 72)) ('cancer', 'Phenotype', 'HP:0002664', (93, 99)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (85, 99)) ('thyroid cancer', 'Disease', (85, 99)) ('V600E', 'Var', (67, 72)) ('BRAF', 'Gene', (62, 66)) ('thyroid cancer', 'Disease', 'MESH:D013964', (85, 99)) 118487 24012403 In one study, 76% (24/34) of BRAF V600E positive (BRAF+) PTC primary tumors had positive sentinel lymph nodes, while only 17% (12/69) of BRAF V600E negative (BRAF-) primary tumors did. ('primary tumors', 'Disease', 'MESH:D009369', (61, 75)) ('V600E', 'Mutation', 'rs113488022', (142, 147)) ('tumor', 'Phenotype', 'HP:0002664', (69, 74)) ('primary tumors', 'Disease', (165, 179)) ('PTC', 'Gene', (57, 60)) ('tumors', 'Phenotype', 'HP:0002664', (69, 75)) ('primary tumors', 'Disease', 'MESH:D009369', (165, 179)) ('PTC', 'Phenotype', 'HP:0002895', (57, 60)) ('tumor', 'Phenotype', 'HP:0002664', (173, 178)) ('PTC', 'Gene', '5979', (57, 60)) ('V600E', 'Mutation', 'rs113488022', (34, 39)) ('tumors', 'Phenotype', 'HP:0002664', (173, 179)) ('primary tumors', 'Disease', (61, 75)) ('BRAF V600E positive', 'Var', (29, 48)) 118488 24012403 In another series, correlation of outcomes with retrospective BRAF testing of 190 PTC fine-needle aspiration (FNA) specimens showed that patients with BRAF+ FNAs had higher rates of unfavorable pathologic characteristics, with more frequent recurrence (36 vs. 12%), more lymph node metastases (39 vs. 19%), and more capsular invasion (29 vs. 16%) than BRAF- FNAs. ('BRAF+ FNAs', 'Var', (151, 161)) ('rat', 'Species', '10116', (173, 176)) ('metastases', 'Disease', 'MESH:D009362', (282, 292)) ('PTC', 'Gene', (82, 85)) ('patients', 'Species', '9606', (137, 145)) ('aspiration', 'Phenotype', 'HP:0002835', (98, 108)) ('PTC', 'Phenotype', 'HP:0002895', (82, 85)) ('PTC', 'Gene', '5979', (82, 85)) ('rat', 'Species', '10116', (102, 105)) ('recurrence', 'CPA', (241, 251)) ('metastases', 'Disease', (282, 292)) ('capsular invasion', 'CPA', (316, 333)) 118491 24012403 Overall, BRAF positivity was associated with significantly higher relative risk (RR) of tumor recurrence (24.9 vs. 12.6%, RR 1.93), lymph node metastasis (54.1% vs. 36.8%, RR 1.32), stage III or IV disease (35.4% vs. 19.6%, RR 1.70), and extrathyroidal extension (46.2% vs. 23.6%, RR 1.71) compared to BRAF- PTCs. ('stage III', 'Disease', (182, 191)) ('lymph node metastasis', 'CPA', (132, 153)) ('rat', 'Species', '10116', (241, 244)) ('tumor', 'Disease', 'MESH:D009369', (88, 93)) ('PTC', 'Gene', (308, 311)) ('PTC', 'Gene', '5979', (308, 311)) ('positivity', 'Var', (14, 24)) ('PTC', 'Phenotype', 'HP:0002895', (308, 311)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('IV disease', 'Disease', (195, 205)) ('IV disease', 'Disease', 'MESH:D020432', (195, 205)) ('tumor', 'Disease', (88, 93)) ('extrathyroidal extension', 'CPA', (238, 262)) 118492 24012403 Testing for BRAF mutation informs risk estimates for resected thyroid cancer, and inclusion of BRAF status modestly improves performance of the AMES, MACIS, TNM, and ATA risk scores. ('BRAF status', 'Gene', (95, 106)) ('BRAF', 'Gene', (12, 16)) ('cancer', 'Phenotype', 'HP:0002664', (70, 76)) ('thyroid cancer', 'Disease', 'MESH:D013964', (62, 76)) ('mutation', 'Var', (17, 25)) ('TNM', 'Gene', (157, 160)) ('improves', 'PosReg', (116, 124)) ('TNM', 'Gene', '10178', (157, 160)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (62, 76)) ('thyroid cancer', 'Disease', (62, 76)) 118495 24012403 While knowledge of mutations in resected cancers improves prognostication, some have sought to apply molecular testing to prospective surgical decision-making. ('cancer', 'Phenotype', 'HP:0002664', (41, 47)) ('mutations', 'Var', (19, 28)) ('improves', 'PosReg', (49, 57)) ('cancers', 'Phenotype', 'HP:0002664', (41, 48)) ('prognostication', 'MPA', (58, 73)) ('cancers', 'Disease', 'MESH:D009369', (41, 48)) ('cancers', 'Disease', (41, 48)) 118496 24012403 Based on their results correlating BRAF+ FNAs with higher recurrence risk even after correcting for unfavorable tumor characteristics, Xing et al. ('tumor', 'Disease', (112, 117)) ('BRAF+ FNAs', 'Var', (35, 45)) ('tumor', 'Phenotype', 'HP:0002664', (112, 117)) ('tumor', 'Disease', 'MESH:D009369', (112, 117)) 118501 24012403 One study (n=51) found that BRAF positivity in excised tumors did not correlate with nodal metastases, but did not test for BRAF preoperatively and had a low rate of BRAF mutation (29%). ('nodal metastases', 'Disease', (85, 101)) ('rat', 'Species', '10116', (135, 138)) ('mutation', 'Var', (171, 179)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('nodal metastases', 'Disease', 'MESH:D009362', (85, 101)) ('tumors', 'Phenotype', 'HP:0002664', (55, 61)) ('tumors', 'Disease', (55, 61)) ('rat', 'Species', '10116', (158, 161)) ('tumors', 'Disease', 'MESH:D009369', (55, 61)) 118502 24012403 A larger study (n=148) found that BRAF+ FNA specimens were significantly associated with occult lymph node metastases after prophylactic central neck dissection, and concluded that BRAF status may be helpful in the decision whether to perform nodal dissection in a clinically node-negative neck. ('metastases', 'Disease', 'MESH:D009362', (107, 117)) ('associated with', 'Reg', (73, 88)) ('metastases', 'Disease', (107, 117)) ('BRAF+ FNA', 'Var', (34, 43)) 118505 24012403 In BRAF-mutated metastatic melanoma, a phase-III trial of the MEK inhibitor trametinib demonstrated significantly prolonged progression-free and overall survival in the treatment group. ('rat', 'Species', '10116', (94, 97)) ('MEK', 'Gene', (62, 65)) ('MEK', 'Gene', '5609', (62, 65)) ('overall survival', 'CPA', (145, 161)) ('trametinib', 'Chemical', 'MESH:C560077', (76, 86)) ('progression-free', 'CPA', (124, 140)) ('melanoma', 'Phenotype', 'HP:0002861', (27, 35)) ('melanoma', 'Disease', (27, 35)) ('prolonged', 'PosReg', (114, 123)) ('melanoma', 'Disease', 'MESH:D008545', (27, 35)) ('BRAF-mutated', 'Var', (3, 15)) 118510 24012403 Cancers with RAS mutations responded best to selumetinib (5/5), while only 1/9 cancers with BRAF V600E had enough uptake to warrant treatment with 131I. ('131I', 'Chemical', 'MESH:C000614965', (147, 151)) ('cancers', 'Disease', (79, 86)) ('Cancers', 'Disease', (0, 7)) ('cancer', 'Phenotype', 'HP:0002664', (79, 85)) ('Cancers', 'Phenotype', 'HP:0002664', (0, 7)) ('Cancers', 'Disease', 'MESH:D009369', (0, 7)) ('cancers', 'Phenotype', 'HP:0002664', (79, 86)) ('RAS', 'Gene', (13, 16)) ('mutations', 'Var', (17, 26)) ('cancers', 'Disease', 'MESH:D009369', (79, 86)) ('selumetinib', 'Chemical', 'MESH:C517975', (45, 56)) ('V600E', 'Mutation', 'rs113488022', (97, 102)) 118517 24012403 Response did correspond to expression of mutant RET, where mutation positive patients enjoyed higher response rates than those with BRAF or RAS mutations, providing further enthusiasm for prospective genetic profiling of thyroid cancers in future trials. ('rat', 'Species', '10116', (110, 113)) ('mutation positive', 'Var', (59, 76)) ('RET', 'Gene', '5979', (48, 51)) ('cancers', 'Phenotype', 'HP:0002664', (229, 236)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (221, 235)) ('higher', 'PosReg', (94, 100)) ('patients', 'Species', '9606', (77, 85)) ('RET', 'Gene', (48, 51)) ('thyroid cancers', 'Disease', (221, 236)) ('cancer', 'Phenotype', 'HP:0002664', (229, 235)) ('response rates', 'MPA', (101, 115)) ('thyroid cancers', 'Disease', 'MESH:D013964', (221, 236)) 118520 24012403 One such is PLX4720, which inserts into the ATP-binding site of mutant BRAF, stabilizing its inactive state. ('inactive state', 'MPA', (93, 107)) ('BRAF', 'Gene', (71, 75)) ('stabilizing', 'MPA', (77, 88)) ('mutant', 'Var', (64, 70)) ('ATP', 'Chemical', 'MESH:D000255', (44, 47)) 118521 24012403 In a mouse model, Nehs and colleagues injected V600E anaplastic thyroid cancer cells into mouse thyroids, and then treated with PLX4720. ('anaplastic thyroid cancer', 'Phenotype', 'HP:0011779', (53, 78)) ('anaplastic thyroid cancer', 'Disease', 'MESH:D065646', (53, 78)) ('cancer', 'Phenotype', 'HP:0002664', (72, 78)) ('V600E', 'Mutation', 'rs113488022', (47, 52)) ('mouse', 'Species', '10090', (90, 95)) ('anaplastic thyroid cancer', 'Disease', (53, 78)) ('V600E', 'Var', (47, 52)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (64, 78)) ('mouse', 'Species', '10090', (5, 10)) 118524 24012403 Based on these studies and data in melanoma with the similar but orally available BRAF inhibitor vemurafenib, Rosove and colleagues reported a complete response to vemurafenib in a critically ill patient with metastatic BRAF+ ATC, providing clinical evidence of the promise of this approach in human ATC. ('melanoma', 'Disease', 'MESH:D008545', (35, 43)) ('human', 'Species', '9606', (294, 299)) ('BRAF+', 'Var', (220, 225)) ('patient', 'Species', '9606', (196, 203)) ('vemurafenib', 'Chemical', 'MESH:D000077484', (97, 108)) ('ATC', 'Phenotype', 'HP:0011779', (226, 229)) ('ATC', 'Phenotype', 'HP:0011779', (300, 303)) ('vemurafenib', 'Chemical', 'MESH:D000077484', (164, 175)) ('melanoma', 'Phenotype', 'HP:0002861', (35, 43)) ('melanoma', 'Disease', (35, 43)) 118532 24012403 They reported that testing for mutations in RET, RAS, BRAF, and PAX8/PPAR-gamma (a fusion of the thyroid transcription factor PAX8 promoter with the peroxisome proliferator-activated receptor-gamma1 gene, which is found in some follicular thyroid cancers) identified mutations in 15% of indeterminate or nondiagnostic FNAs. ('RET', 'Gene', (44, 47)) ('PAX8', 'Gene', '7849', (126, 130)) ('cancer', 'Phenotype', 'HP:0002664', (247, 253)) ('PPAR-gamma', 'Gene', (69, 79)) ('follicular thyroid cancer', 'Phenotype', 'HP:0006731', (228, 253)) ('mutations', 'Var', (267, 276)) ('PAX8', 'Gene', (126, 130)) ('PPAR-gamma', 'Gene', '5468', (69, 79)) ('cancers', 'Phenotype', 'HP:0002664', (247, 254)) ('RET', 'Gene', '5979', (44, 47)) ('follicular thyroid cancers', 'Disease', (228, 254)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (239, 253)) ('rat', 'Species', '10116', (167, 170)) ('follicular thyroid cancers', 'Phenotype', 'HP:0006731', (228, 254)) ('follicular thyroid cancers', 'Disease', 'MESH:C572845', (228, 254)) ('PAX8', 'Gene', '7849', (64, 68)) ('indeterminate', 'Disease', (287, 300)) ('PAX8', 'Gene', (64, 68)) 118537 24012403 Overall, detecting a known malignant mutation on thyroid FNA has a positive predictive value for malignancy of nearly 100% for BRAF, RET, or PAX8/PPAR-gamma and 74-87% for RAS, and these patients should undergo total thyroidectomy. ('patients', 'Species', '9606', (187, 195)) ('BRAF', 'Disease', (127, 131)) ('mutation', 'Var', (37, 45)) ('RET', 'Gene', (133, 136)) ('PAX8', 'Gene', '7849', (141, 145)) ('PPAR-gamma', 'Gene', (146, 156)) ('malignancy', 'Disease', 'MESH:D009369', (97, 107)) ('PPAR-gamma', 'Gene', '5468', (146, 156)) ('PAX8', 'Gene', (141, 145)) ('RET', 'Gene', '5979', (133, 136)) ('malignancy', 'Disease', (97, 107)) ('RAS', 'Disease', (172, 175)) 118538 24012403 While testing for mutations of known malignant potential can identify patients who should undergo total thyroidectomy, with its low negative predictive value, it cannot rule out malignancy. ('malignancy', 'Disease', (178, 188)) ('patients', 'Species', '9606', (70, 78)) ('malignancy', 'Disease', 'MESH:D009369', (178, 188)) ('mutations', 'Var', (18, 27)) 118544 24012403 At least one study funded by the company reported that the rate of surgery in indeterminate nodules classified as benign by the gene expression test fell to 7% among patients of participating endocrinologists, compared to 74% overall for indeterminate nodules prior to adoption of the test. ('to 7', 'Species', '1214577', (154, 158)) ('to 7', 'Species', '1214577', (219, 223)) ('gene', 'Var', (128, 132)) ('rat', 'Species', '10116', (59, 62)) ('fell', 'NegReg', (149, 153)) ('patients', 'Species', '9606', (166, 174)) 118547 24012403 An industry-sponsored study claiming cost-effectiveness of this $3,200 test used a cost model which assumed very high 30 and 44% complication rates for hemi and total thyroidectomy and did not account for the costs and quality-of-life impact of missed cancer diagnoses. ('cancer', 'Disease', 'MESH:D009369', (252, 258)) ('cancer', 'Disease', (252, 258)) ('rat', 'Species', '10116', (142, 145)) ('cancer', 'Phenotype', 'HP:0002664', (252, 258)) ('hemi', 'Var', (152, 156)) 118555 24012403 Germline HRPT2 mutations cause familial hyperparathyroidism/jaw-tumor syndrome and somatic mutation of HRPT2 is found in over 75% of sporadic parathyroid carcinomas. ('hyperparathyroidism', 'Phenotype', 'HP:0000843', (40, 59)) ('carcinomas', 'Phenotype', 'HP:0030731', (154, 164)) ('HRPT2', 'Gene', '79577', (103, 108)) ('mutations', 'Var', (15, 24)) ('carcinoma', 'Phenotype', 'HP:0030731', (154, 163)) ('HRPT2', 'Gene', (103, 108)) ('HRPT2', 'Gene', '79577', (9, 14)) ('cause', 'Reg', (25, 30)) ('familial hyperparathyroidism/jaw-tumor syndrome', 'Disease', 'MESH:C563273', (31, 78)) ('HRPT2', 'Gene', (9, 14)) ('parathyroid carcinomas', 'Phenotype', 'HP:0006780', (142, 164)) ('sporadic parathyroid carcinomas', 'Disease', (133, 164)) ('parathyroid carcinoma', 'Phenotype', 'HP:0006780', (142, 163)) ('sporadic parathyroid carcinomas', 'Disease', 'MESH:D010282', (133, 164)) ('tumor', 'Phenotype', 'HP:0002664', (64, 69)) ('familial hyperparathyroidism/jaw-tumor syndrome', 'Disease', (31, 78)) 118556 24012403 Some patients with seemingly sporadic parathyroid carcinoma will be found to have germline HRPT2 mutations, making genetic testing of parathyroid carcinoma patients potentially helpful by identifying related gene carriers who will benefit from serum calcium screening. ('parathyroid carcinoma', 'Disease', (134, 155)) ('mutations', 'Var', (97, 106)) ('patients', 'Species', '9606', (156, 164)) ('carcinoma', 'Phenotype', 'HP:0030731', (146, 155)) ('patients', 'Species', '9606', (5, 13)) ('parathyroid carcinoma', 'Disease', 'MESH:D010282', (38, 59)) ('parathyroid carcinoma', 'Phenotype', 'HP:0006780', (134, 155)) ('parathyroid carcinoma', 'Disease', (38, 59)) ('carcinoma', 'Phenotype', 'HP:0030731', (50, 59)) ('calcium', 'Chemical', 'MESH:D002118', (250, 257)) ('parathyroid carcinoma', 'Disease', 'MESH:D010282', (134, 155)) ('parathyroid carcinoma', 'Phenotype', 'HP:0006780', (38, 59)) ('HRPT2', 'Gene', '79577', (91, 96)) ('HRPT2', 'Gene', (91, 96)) 118559 24012403 Hyperparathyroidism (HPT) occurs in a minority of MEN2A patients, with the risk strongly influenced by the specific RET mutation present (Table 1). ('patients', 'Species', '9606', (56, 64)) ('MEN2A', 'Gene', '5979', (50, 55)) ('mutation', 'Var', (120, 128)) ('RET', 'Gene', (116, 119)) ('influenced', 'Reg', (89, 99)) ('Hyperparathyroidism', 'Phenotype', 'HP:0000843', (0, 19)) ('Hyperparathyroidism', 'Disease', (0, 19)) ('Hyperparathyroidism', 'Disease', 'MESH:D006961', (0, 19)) ('HPT', 'Phenotype', 'HP:0000843', (21, 24)) ('RET', 'Gene', '5979', (116, 119)) ('MEN2A', 'Gene', (50, 55)) 118560 24012403 The incidence of HPT in MEN2A is known to be 20-35%, and is much more common with mutations of codon 634, although HPT also occurs in 1-5% of patients with codon 609, 611, 618, and 620 mutations. ('MEN2A', 'Gene', '5979', (24, 29)) ('HPT', 'Phenotype', 'HP:0000843', (17, 20)) ('MEN2A', 'Gene', (24, 29)) ('HPT', 'Phenotype', 'HP:0000843', (115, 118)) ('mutations', 'Var', (82, 91)) ('codon', 'Gene', (95, 100)) ('patients', 'Species', '9606', (142, 150)) ('HPT', 'Disease', (17, 20)) 118564 24012403 Unlike MEN2 mutations, which cluster at particular codons, MEN1 mutations are highly variable, with over 1,100 distinct germline mutations described and the most common occurring in only 4.5% of families (as opposed to 85% of MEN2A families having RET codon 634 mutations). ('MEN2A', 'Gene', (226, 231)) ('MEN1', 'Gene', (59, 63)) ('MEN2A', 'Gene', '5979', (226, 231)) ('MEN1', 'Gene', '4221', (59, 63)) ('MEN', 'Species', '9606', (226, 229)) ('RET', 'Gene', '5979', (248, 251)) ('mutations', 'Var', (129, 138)) ('MEN', 'Species', '9606', (7, 10)) ('MEN', 'Species', '9606', (59, 62)) ('RET', 'Gene', (248, 251)) 118566 24012403 Thus, while genetic testing for MEN1 mutations is available, identifying carriers does not suggest a specific prophylactic surgical therapy, as in MEN2, but rather identifies those who require screening for development of different manifestations of the disease. ('MEN', 'Species', '9606', (147, 150)) ('MEN1', 'Gene', (32, 36)) ('mutations', 'Var', (37, 46)) ('rat', 'Species', '10116', (157, 160)) ('MEN1', 'Gene', '4221', (32, 36)) ('MEN', 'Species', '9606', (32, 35)) 118567 24012403 found that genetic testing for MEN1 helped identify biochemical changes 5-10 years before the development of clinically apparent tumors, allowing for early surgical intervention in some cases. ('biochemical', 'MPA', (52, 63)) ('tumors', 'Disease', (129, 135)) ('tumors', 'Disease', 'MESH:D009369', (129, 135)) ('MEN1', 'Gene', (31, 35)) ('tumors', 'Phenotype', 'HP:0002664', (129, 135)) ('genetic testing', 'Var', (11, 26)) ('MEN1', 'Gene', '4221', (31, 35)) ('tumor', 'Phenotype', 'HP:0002664', (129, 134)) 118570 24012403 The importance of the MEN1 gene to parathyroid disease is highlighted by the frequency of somatic MEN1 mutation in sporadic parathyroid adenomas. ('parathyroid adenomas', 'Disease', 'MESH:D010282', (124, 144)) ('parathyroid disease', 'Phenotype', 'HP:0000828', (35, 54)) ('parathyroid disease', 'Disease', (35, 54)) ('parathyroid adenomas', 'Disease', (124, 144)) ('parathyroid disease', 'Disease', 'MESH:D010279', (35, 54)) ('parathyroid adenomas', 'Phenotype', 'HP:0002897', (124, 144)) ('MEN1', 'Gene', (22, 26)) ('MEN1', 'Gene', (98, 102)) ('MEN1', 'Gene', '4221', (22, 26)) ('MEN1', 'Gene', '4221', (98, 102)) ('mutation', 'Var', (103, 111)) 118571 24012403 Cromer and colleagues performed whole exome sequencing on 8 sporadic parathyroid adenomas and corresponding genomic DNA, identifying 29 somatic mutations in the adenomas. ('adenomas', 'Disease', 'MESH:D000236', (81, 89)) ('parathyroid adenomas', 'Disease', (69, 89)) ('adenomas', 'Disease', 'MESH:D000236', (161, 169)) ('adenomas', 'Disease', (81, 89)) ('parathyroid adenomas', 'Phenotype', 'HP:0002897', (69, 89)) ('adenomas', 'Disease', (161, 169)) ('mutations', 'Var', (144, 153)) ('parathyroid adenomas', 'Disease', 'MESH:D010282', (69, 89)) 118572 24012403 Screening 185 additional sporadic parathyroid adenomas for these by direct sequencing revealed MEN1 mutations in 35.2% of the validation cohort, while only 1 of the other mutations (occurring in 1/185 patients) was found. ('patients', 'Species', '9606', (201, 209)) ('mutations', 'Var', (100, 109)) ('parathyroid adenomas', 'Disease', (34, 54)) ('parathyroid adenomas', 'Phenotype', 'HP:0002897', (34, 54)) ('parathyroid adenomas', 'Disease', 'MESH:D010282', (34, 54)) ('MEN1', 'Gene', (95, 99)) ('MEN1', 'Gene', '4221', (95, 99)) 118573 24012403 Thus, while the exact mechanisms by which RET and MEN1 lead to parathyroid disease remain unknown, somatic MEN1 mutation is a frequent event in sporadic and heritable parathyroid disease. ('RET', 'Gene', '5979', (42, 45)) ('mutation', 'Var', (112, 120)) ('MEN1', 'Gene', (107, 111)) ('MEN1', 'Gene', '4221', (107, 111)) ('parathyroid disease', 'Disease', (167, 186)) ('parathyroid disease', 'Phenotype', 'HP:0000828', (167, 186)) ('parathyroid disease', 'Disease', (63, 82)) ('parathyroid disease', 'Disease', 'MESH:D010279', (167, 186)) ('MEN1', 'Gene', (50, 54)) ('MEN1', 'Gene', '4221', (50, 54)) ('RET', 'Gene', (42, 45)) ('parathyroid disease', 'Disease', 'MESH:D010279', (63, 82)) ('parathyroid disease', 'Phenotype', 'HP:0000828', (63, 82)) 118585 24012403 Activation of mTOR in NF1-mutated tumors is influenced by inactivation of tuberin, the product of the Tuberous Sclerosis Complex gene TSC2. ('mTOR', 'Gene', '2475', (14, 18)) ('NF1', 'Gene', (22, 25)) ('TSC2', 'Gene', (134, 138)) ('tumors', 'Disease', (34, 40)) ('tumors', 'Disease', 'MESH:D009369', (34, 40)) ('tumors', 'Phenotype', 'HP:0002664', (34, 40)) ('NF1', 'Gene', '4763', (22, 25)) ('tuberin', 'Gene', '7249', (74, 81)) ('inactivation', 'Var', (58, 70)) ('tuberin', 'Gene', (74, 81)) ('Activation', 'PosReg', (0, 10)) ('Tuberous Sclerosis Complex', 'Disease', (102, 128)) ('Tuberous Sclerosis Complex', 'Disease', 'MESH:D014402', (102, 128)) ('TSC2', 'Gene', '7249', (134, 138)) ('tumor', 'Phenotype', 'HP:0002664', (34, 39)) ('mTOR', 'Gene', (14, 18)) 118590 24012403 found PCCs were significantly more common (penetrance ~60% by 50 years versus 5-20% in other groups) and occured earlier (mean 21.7 vs. 27.8 years, p=0.012) in patients with missense mutations of surface residues of the VHL protein, compared to those with deletions, truncations, or missense mutations of core residues. ('patients', 'Species', '9606', (160, 168)) ('missense mutations', 'Var', (174, 192)) ('VHL', 'Gene', (220, 223)) ('PCCs', 'Disease', (6, 10)) ('VHL', 'Gene', '7428', (220, 223)) 118591 24012403 This genotypic distinction between mutations with low and high risk of PCC correlates closely with the earlier clinical designation of vHL type 1 and 2. ('PCC', 'Disease', (71, 74)) ('vHL', 'Gene', '7428', (135, 138)) ('vHL', 'Gene', (135, 138)) ('mutations', 'Var', (35, 44)) 118593 24012403 Mutant proteins may fail to cause degradation of HIF proteins, leading to pro-malignant signaling, but as some patients with mutations that do not disrupt HIF interactions still develop PCC, additional mechanisms, such as failure of normal apoptosis of adrenal progenitor cells, may be responsible for PCC features of vHL syndrome. ('mutations', 'Var', (125, 134)) ('develop', 'Reg', (178, 185)) ('vHL syndrome', 'Disease', (318, 330)) ('degradation of HIF proteins', 'Disease', 'MESH:D055959', (34, 61)) ('PCC', 'Disease', (186, 189)) ('degradation of HIF proteins', 'Disease', (34, 61)) ('vHL syndrome', 'Disease', 'MESH:D013577', (318, 330)) ('patients', 'Species', '9606', (111, 119)) 118596 24012403 SDHD was first identified as a cause of Familial Paraganglioma syndrome, and SDHD mutations were soon reported in sporadic PGLs and hereditary and sporadic PCCs. ('Paraganglioma', 'Phenotype', 'HP:0002668', (49, 62)) ('Familial Paraganglioma syndrome', 'Disease', (40, 71)) ('SDHD', 'Gene', '6392', (77, 81)) ('Familial Paraganglioma syndrome', 'Disease', 'MESH:D010235', (40, 71)) ('SDHD', 'Gene', (77, 81)) ('mutations', 'Var', (82, 91)) ('SDHD', 'Gene', '6392', (0, 4)) ('cause', 'Reg', (31, 36)) ('SDHD', 'Gene', (0, 4)) 118599 24012403 After identification of the SDHD mutation, reports of mutations causing the syndrome in the A, B, and C SDH subunits, as well as in the SDH assembly-factor 2 (SDHAF2) gene followed. ('SDHD', 'Gene', (28, 32)) ('mutation', 'Var', (33, 41)) ('SDH', 'Gene', '6390', (28, 31)) ('SDH', 'Gene', '6390', (159, 162)) ('SDH', 'Gene', '6390', (104, 107)) ('SDH', 'Gene', (136, 139)) ('syndrome', 'Disease', (76, 84)) ('SDH', 'Gene', '6390', (136, 139)) ('mutations', 'Var', (54, 63)) ('SDHAF2', 'Gene', '54949', (159, 165)) ('SDH assembly-factor 2', 'Gene', (136, 157)) ('SDH', 'Gene', (159, 162)) ('SDHAF2', 'Gene', (159, 165)) ('SDH', 'Gene', (104, 107)) ('SDH', 'Gene', (28, 31)) ('SDH assembly-factor 2', 'Gene', '54949', (136, 157)) ('SDHD', 'Gene', '6392', (28, 32)) ('causing', 'Reg', (64, 71)) 118601 24012403 As with HIF-stabilization in vHL syndrome, the SDHx mutations inactivate the SDH complex, leading to a defect in electron transport, accumulation of succinate, and induction of a pseudo-hypoxic state with consequent persistence of HIF factors. ('mutations', 'Var', (52, 61)) ('induction', 'Reg', (164, 173)) ('SDH', 'Gene', (77, 80)) ('SDH', 'Gene', (47, 50)) ('vHL syndrome', 'Disease', (29, 41)) ('succinate', 'Chemical', 'MESH:D019802', (149, 158)) ('defect', 'NegReg', (103, 109)) ('SDHx', 'Chemical', '-', (47, 51)) ('electron transport', 'MPA', (113, 131)) ('SDH', 'Gene', '6390', (77, 80)) ('accumulation of succinate', 'MPA', (133, 158)) ('inactivate', 'NegReg', (62, 72)) ('SDH', 'Gene', '6390', (47, 50)) ('vHL syndrome', 'Disease', 'MESH:D013577', (29, 41)) ('pseudo-hypoxic state', 'MPA', (179, 199)) 118605 24012403 Malignant PCCs occur more commonly in families with SDHB mutations, while SDHD PCCs are more often benign. ('SDHB', 'Gene', (52, 56)) ('SDHD', 'Gene', (74, 78)) ('SDHD', 'Gene', '6392', (74, 78)) ('Malignant PCCs', 'Disease', (0, 14)) ('mutations', 'Var', (57, 66)) ('SDHB', 'Gene', '6390', (52, 56)) 118606 24012403 In malignant PCC/PGL, SDHB mutations also portend a worse prognosis, and are associated with lower 5-year survival when compared to tumors without SDHB mutations. ('mutations', 'Var', (27, 36)) ('tumor', 'Phenotype', 'HP:0002664', (132, 137)) ('SDHB', 'Gene', '6390', (22, 26)) ('SDHB', 'Gene', (22, 26)) ('tumors', 'Phenotype', 'HP:0002664', (132, 138)) ('lower', 'NegReg', (93, 98)) ('SDHB', 'Gene', '6390', (147, 151)) ('5-year survival', 'MPA', (99, 114)) ('SDHB', 'Gene', (147, 151)) ('tumors', 'Disease', (132, 138)) ('tumors', 'Disease', 'MESH:D009369', (132, 138)) 118607 24012403 Mutations of the other SDHx genes rarely lead to PCCs, and these syndromes are marked mostly by head and neck paragangliomas. ('SDHx', 'Chemical', '-', (23, 27)) ('neck paragangliomas', 'Phenotype', 'HP:0002864', (105, 124)) ('SDHx', 'Gene', (23, 27)) ('Mutations', 'Var', (0, 9)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (105, 124)) ('lead to', 'Reg', (41, 48)) ('paragangliomas', 'Phenotype', 'HP:0002668', (110, 124)) ('PCCs', 'Disease', (49, 53)) ('neck paragangliomas', 'Disease', (105, 124)) 118610 24012403 reported autosomal dominant inheritance of 6 distinct germline TMEM127 mutations in 7 families, representing 30% of familial and 3% of apparently sporadic PCCs out of 102 screened. ('TMEM127', 'Gene', (63, 70)) ('mutations', 'Var', (71, 80)) ('TMEM127', 'Gene', '55654', (63, 70)) 118612 24012403 It co-localizes with mTORC1, and siRNA knockdown of TMEM127 increases mTORC1 signaling, which is likewise observed with NF1 mutations. ('mutations', 'Var', (124, 133)) ('mTORC1', 'Gene', '382056', (21, 27)) ('TMEM127', 'Gene', (52, 59)) ('TMEM127', 'Gene', '55654', (52, 59)) ('knockdown', 'Var', (39, 48)) ('mTORC1', 'Gene', '382056', (70, 76)) ('NF1', 'Gene', (120, 123)) ('NF1', 'Gene', '4763', (120, 123)) ('mTORC1', 'Gene', (21, 27)) ('mTORC1', 'Gene', (70, 76)) ('increases', 'PosReg', (60, 69)) 118613 24012403 Screening of 642 sporadic PCCs found TMEM127 mutations in only six patients (0.9%), making TMEM127 the least common PCC susceptibility gene. ('mutations', 'Var', (45, 54)) ('patients', 'Species', '9606', (67, 75)) ('TMEM127', 'Gene', '55654', (91, 98)) ('TMEM127', 'Gene', (91, 98)) ('TMEM127', 'Gene', (37, 44)) ('TMEM127', 'Gene', '55654', (37, 44)) 118614 24012403 MAX mutations causing loss of protein expression were discovered in three kindreds by exome sequencing, and then confirmed to affect 1.12% of 1,694 sporadic and hereditary PCC patients without a known mutation. ('patients', 'Species', '9606', (176, 184)) ('MAX', 'Gene', (0, 3)) ('affect', 'Reg', (126, 132)) ('PCC', 'Disease', (172, 175)) ('mutations', 'Var', (4, 13)) ('protein expression', 'MPA', (30, 48)) 118616 24012403 Like SDHAF2 and SDHD, transmission of familial MAX mutation is preferentially paternal, with tumors of affected patients expressing only the paternal allele either through uniparental disomy or loss of heterozygosity for chromosome 14q. ('tumor', 'Phenotype', 'HP:0002664', (93, 98)) ('SDHAF2', 'Gene', (5, 11)) ('SDHD', 'Gene', '6392', (16, 20)) ('tumors', 'Disease', 'MESH:D009369', (93, 99)) ('patients', 'Species', '9606', (112, 120)) ('SDHD', 'Gene', (16, 20)) ('tumors', 'Phenotype', 'HP:0002664', (93, 99)) ('mutation', 'Var', (51, 59)) ('uniparental disomy or loss', 'Disease', (172, 198)) ('SDHAF2', 'Gene', '54949', (5, 11)) ('tumors', 'Disease', (93, 99)) ('uniparental disomy or loss', 'Disease', 'MESH:D024182', (172, 198)) ('familial MAX', 'Gene', (38, 50)) 118617 24012403 Despite the host of mutations predisposing to PCCS and PGLs, there is an increasing understanding that the affected genes cluster into only a few pathways and relate to other forms of neuroendocrine cancer. ('PCCS', 'Disease', (46, 50)) ('cancer', 'Phenotype', 'HP:0002664', (199, 205)) ('neuroendocrine cancer', 'Disease', (184, 205)) ('neuroendocrine cancer', 'Disease', 'MESH:D018358', (184, 205)) ('endocrine cancer', 'Phenotype', 'HP:0100568', (189, 205)) ('relate', 'Reg', (159, 165)) ('neuroendocrine cancer', 'Phenotype', 'HP:0100634', (184, 205)) ('mutations', 'Var', (20, 29)) 118620 24012403 Analysis of 78 sporadic tumors which grouped to these same clusters uncovered somatic mutations of RET and VHL in 17, loss of SDH heterozygosity in 2/2 sporadic tumors that clustered with familial SDHx tumors, and loss of heterozygosity of the VHL locus in 16/16 tumors clustering with familial vHL tumors. ('tumor', 'Phenotype', 'HP:0002664', (24, 29)) ('RET', 'Gene', (99, 102)) ('tumors', 'Disease', (24, 30)) ('tumors', 'Disease', (161, 167)) ('tumors', 'Disease', 'MESH:D009369', (202, 208)) ('loss', 'Var', (214, 218)) ('tumors', 'Disease', 'MESH:D009369', (263, 269)) ('VHL', 'Gene', (244, 247)) ('tumor', 'Phenotype', 'HP:0002664', (299, 304)) ('sporadic tumors', 'Disease', (152, 167)) ('tumors', 'Disease', 'MESH:D009369', (24, 30)) ('tumors', 'Disease', 'MESH:D009369', (161, 167)) ('SDH', 'Gene', '6390', (197, 200)) ('tumors', 'Phenotype', 'HP:0002664', (299, 305)) ('loss', 'Var', (118, 122)) ('VHL', 'Gene', (107, 110)) ('sporadic tumors', 'Disease', 'MESH:D009369', (152, 167)) ('SDH', 'Gene', '6390', (126, 129)) ('mutations', 'Var', (86, 95)) ('VHL', 'Gene', '7428', (244, 247)) ('tumors', 'Phenotype', 'HP:0002664', (202, 208)) ('sporadic tumors', 'Disease', (15, 30)) ('tumors', 'Disease', (299, 305)) ('familial SDHx tumors', 'Disease', 'MESH:D009386', (188, 208)) ('tumor', 'Phenotype', 'HP:0002664', (161, 166)) ('RET', 'Gene', '5979', (99, 102)) ('tumors', 'Phenotype', 'HP:0002664', (263, 269)) ('SDH', 'Gene', (197, 200)) ('familial SDHx tumors', 'Disease', (188, 208)) ('tumor', 'Phenotype', 'HP:0002664', (202, 207)) ('sporadic tumors', 'Disease', 'MESH:D009369', (15, 30)) ('VHL', 'Gene', '7428', (107, 110)) ('familial vHL tumors', 'Disease', (286, 305)) ('tumors', 'Phenotype', 'HP:0002664', (24, 30)) ('tumors', 'Phenotype', 'HP:0002664', (161, 167)) ('SDH', 'Gene', (126, 129)) ('tumors', 'Disease', (202, 208)) ('tumor', 'Phenotype', 'HP:0002664', (263, 268)) ('familial vHL tumors', 'Disease', 'MESH:D009386', (286, 305)) ('tumors', 'Disease', 'MESH:D009369', (299, 305)) ('tumors', 'Disease', (263, 269)) 118624 24012403 The FIRM-ACT trial, which randomized patients with advanced ACC to treatment with mitotane plus either streptozocin (Sz+M) or etoposide, doxorubicin, and cisplatin (EDP+M), established EDP+M as the standard of care due to its higher objective response rate (23.2 vs. 9.2%, p<0.001) and similar toxicity. ('toxicity', 'Disease', (294, 302)) ('cisplatin', 'Chemical', 'MESH:D002945', (154, 163)) ('EDP+M', 'Var', (185, 190)) ('mitotane', 'Chemical', 'MESH:D008939', (82, 90)) ('streptozocin', 'Chemical', 'MESH:D013311', (103, 115)) ('patients', 'Species', '9606', (37, 45)) ('rat', 'Species', '10116', (252, 255)) ('doxorubicin', 'Chemical', 'MESH:D004317', (137, 148)) ('ACC', 'Phenotype', 'HP:0006744', (60, 63)) ('toxicity', 'Disease', 'MESH:D064420', (294, 302)) ('EDP', 'Chemical', '-', (165, 168)) ('EDP', 'Chemical', '-', (185, 188)) ('etoposide', 'Chemical', 'MESH:D005047', (126, 135)) 118625 24012403 Despite higher response rates with EDP+M, overall survival remained disappointing, with no significant difference between the two treatment groups (median 14.8 vs. 12.0 months, p=0.07). ('response', 'MPA', (15, 23)) ('EDP+M', 'Var', (35, 40)) ('EDP', 'Chemical', '-', (35, 38)) ('rat', 'Species', '10116', (24, 27)) ('higher', 'PosReg', (8, 14)) 118629 24012403 At this parentally-imprinted locus, duplications, deletions, gene methylation, chromosomal loss, and uniparental disomy cause variations in the effective copy number of IGF2, with increased gene dosage driving proliferation and malignancy in neural-crest derived tissues. ('duplications', 'Var', (36, 48)) ('variations', 'Var', (126, 136)) ('IGF2', 'Gene', '3481', (169, 173)) ('proliferation', 'CPA', (210, 223)) ('increased', 'PosReg', (180, 189)) ('IGF2', 'Gene', (169, 173)) ('gene methylation', 'Var', (61, 77)) ('driving', 'PosReg', (202, 209)) ('malignancy', 'Disease', 'MESH:D009369', (228, 238)) ('uniparental disomy', 'Disease', (101, 119)) ('rat', 'Species', '10116', (217, 220)) ('malignancy', 'Disease', (228, 238)) ('deletions', 'Var', (50, 59)) ('uniparental disomy', 'Disease', 'MESH:D024182', (101, 119)) 118635 24012403 Combination therapy with sunitinib and the ERK inhibitor PD98059 resulted in greater proliferation inhibition (68% with both vs. 23% and 19% inhibition with sunitinib or PD98059 alone). ('PD98059', 'Var', (57, 64)) ('PD98059', 'Chemical', 'MESH:C093973', (170, 177)) ('sunitinib', 'Chemical', 'MESH:D000077210', (25, 34)) ('PD98059', 'Chemical', 'MESH:C093973', (57, 64)) ('ERK', 'Gene', '5594', (43, 46)) ('ERK', 'Gene', (43, 46)) ('rat', 'Species', '10116', (92, 95)) ('proliferation inhibition', 'CPA', (85, 109)) ('sunitinib', 'Chemical', 'MESH:D000077210', (157, 166)) 118637 24012403 As in other areas of endocrine dysfunction, exome sequencing has proven a powerful tool for identifying specific mutations in both familial and sporadic functional adrenal adenomas. ('endocrine dysfunction', 'Disease', 'MESH:D004700', (21, 42)) ('endocrine dysfunction', 'Disease', (21, 42)) ('endocrine dysfunction', 'Phenotype', 'HP:0000818', (21, 42)) ('adrenal adenomas', 'Phenotype', 'HP:0008256', (164, 180)) ('sporadic functional adrenal adenomas', 'Disease', (144, 180)) ('familial', 'Disease', (131, 139)) ('mutations', 'Var', (113, 122)) ('sporadic functional adrenal adenomas', 'Disease', 'MESH:D018246', (144, 180)) 118640 24012403 The KCNJ5 gene encodes a potassium channel that causes depolarization and excessive aldosterone release when mutated. ('aldosterone', 'Chemical', 'MESH:D000450', (84, 95)) ('KCNJ5', 'Gene', '3762', (4, 9)) ('aldosterone release', 'MPA', (84, 103)) ('excessive aldosterone', 'Phenotype', 'HP:0000859', (74, 95)) ('causes', 'Reg', (48, 54)) ('aldosterone release', 'Phenotype', 'HP:0000859', (84, 103)) ('mutated', 'Var', (109, 116)) ('depolarization', 'MPA', (55, 69)) ('KCNJ5', 'Gene', (4, 9)) 118641 24012403 Mutations in the Na+/K+ ATPase ATPA1 and the Ca2+ ATPase ATP2B3 likewise cause depolarization with aldosterone release, and somatic mutations in these genes occur in 7% of APAs. ('Ca2+ ATPase', 'Gene', (45, 56)) ('aldosterone release', 'Phenotype', 'HP:0000859', (99, 118)) ('ATPase', 'Gene', (50, 56)) ('cause', 'Reg', (73, 78)) ('ATPase', 'Gene', (24, 30)) ('ATPase', 'Gene', '1769', (50, 56)) ('Mutations', 'Var', (0, 9)) ('ATPase', 'Gene', '1769', (24, 30)) ('ATP', 'Chemical', 'MESH:D000255', (50, 53)) ('occur', 'Reg', (157, 162)) ('aldosterone', 'Chemical', 'MESH:D000450', (99, 110)) ('depolarization', 'MPA', (79, 93)) ('APAs', 'Disease', (172, 176)) ('Ca2+ ATPase', 'Gene', '760;1769', (45, 56)) ('ATP', 'Chemical', 'MESH:D000255', (57, 60)) ('mutations', 'Var', (132, 141)) ('ATP', 'Chemical', 'MESH:D000255', (24, 27)) ('ATP', 'Chemical', 'MESH:D000255', (31, 34)) ('ATP2B3', 'Gene', '492', (57, 63)) ('ATP2B3', 'Gene', (57, 63)) 118642 24012403 Notably, a screen of 380 APAs found KCNJ5 mutations in 49% of females but only 19% of males (p<.001), while 17/21 (81%) of ATPase mutations occurred in males. ('ATPase', 'Gene', (123, 129)) ('ATPase', 'Gene', '1769', (123, 129)) ('KCNJ5', 'Gene', (36, 41)) ('mutations', 'Var', (42, 51)) ('KCNJ5', 'Gene', '3762', (36, 41)) 118643 24012403 Knowledge of these APA-causing mutations has not yet altered surgical management, but medical therapies targeting these genes could someday reduce the need for adrenalectomy in these patients. ('mutations', 'Var', (31, 40)) ('patients', 'Species', '9606', (183, 191)) ('APA-causing', 'Disease', (19, 30)) 118653 24012403 Early reports indicated no association between tumor size and outcomes, but more recently, larger, non-functional pancreatic tumors were found to be significantly associated with poorer survival and higher rates of metastasis in a long-term study of more than 500 MEN1 patients. ('tumor', 'Disease', 'MESH:D009369', (125, 130)) ('MEN1', 'Gene', (264, 268)) ('metastasis', 'CPA', (215, 225)) ('tumors', 'Phenotype', 'HP:0002664', (125, 131)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('rat', 'Species', '10116', (206, 209)) ('patients', 'Species', '9606', (269, 277)) ('tumor', 'Phenotype', 'HP:0002664', (125, 130)) ('pancreatic tumors', 'Disease', 'MESH:D010190', (114, 131)) ('poorer', 'NegReg', (179, 185)) ('pancreatic tumors', 'Disease', (114, 131)) ('survival', 'CPA', (186, 194)) ('tumor', 'Disease', (47, 52)) ('non-functional', 'Var', (99, 113)) ('MEN1', 'Gene', '4221', (264, 268)) ('higher', 'PosReg', (199, 205)) ('tumor', 'Disease', 'MESH:D009369', (47, 52)) ('tumor', 'Disease', (125, 130)) ('pancreatic tumors', 'Phenotype', 'HP:0002894', (114, 131)) 118678 24012403 Unlike in MTC where mutations in RET lead to constitutive activation, providing a mechanism for tumorigenesis, the overexpressed receptors in PNETs are not mutated, suggesting that their overexpression does not drive malignancy, but rather represents an upregulatory reaction to primary mutations in other genes. ('RET', 'Gene', (33, 36)) ('MTC', 'Phenotype', 'HP:0002865', (10, 13)) ('malignancy', 'Disease', 'MESH:D009369', (217, 227)) ('tumor', 'Phenotype', 'HP:0002664', (96, 101)) ('malignancy', 'Disease', (217, 227)) ('tumor', 'Disease', (96, 101)) ('RET', 'Gene', '5979', (33, 36)) ('rat', 'Species', '10116', (233, 236)) ('PNETs', 'Gene', (142, 147)) ('tumor', 'Disease', 'MESH:D009369', (96, 101)) ('mutations', 'Var', (20, 29)) 118682 24012403 TSC2 and PTEN function to negatively regulate the PI3K/Akt/mTOR pathway, with mutations in either leading to increased proliferation and loss of hypoxia-induced growth inhibition (Fig. ('Akt', 'Gene', (55, 58)) ('TSC2', 'Gene', '7249', (0, 4)) ('TSC2', 'Gene', (0, 4)) ('regulate', 'Reg', (37, 45)) ('mTOR', 'Gene', '2475', (59, 63)) ('PTEN', 'Gene', (9, 13)) ('PTEN', 'Gene', '5728', (9, 13)) ('mutations', 'Var', (78, 87)) ('loss', 'NegReg', (137, 141)) ('hypoxia', 'Disease', (145, 152)) ('negatively', 'NegReg', (26, 36)) ('hypoxia', 'Disease', 'MESH:D000860', (145, 152)) ('Akt', 'Gene', '207', (55, 58)) ('rat', 'Species', '10116', (126, 129)) ('increased', 'PosReg', (109, 118)) ('mTOR', 'Gene', (59, 63)) 118685 24012403 Instead, the most commonly mutated genes in PNETs were MEN1, DAXX/ATRX, TSC2, and PTEN in 44, 25, 9, and 7% of tumors, respectively. ('mutated', 'Var', (27, 34)) ('MEN1', 'Gene', (55, 59)) ('MEN1', 'Gene', '4221', (55, 59)) ('tumor', 'Phenotype', 'HP:0002664', (111, 116)) ('TSC2', 'Gene', '7249', (72, 76)) ('TSC2', 'Gene', (72, 76)) ('tumors', 'Disease', (111, 117)) ('tumors', 'Disease', 'MESH:D009369', (111, 117)) ('tumors', 'Phenotype', 'HP:0002664', (111, 117)) ('PTEN', 'Gene', (82, 86)) ('PTEN', 'Gene', '5728', (82, 86)) 118687 24012403 This, along with the finding of ATRX mutations in additional cancer types with the ALT phenotype implies that DAXX and ATRX play important roles in telomere maintenance. ('cancer', 'Disease', 'MESH:D009369', (61, 67)) ('cancer', 'Disease', (61, 67)) ('mutations', 'Var', (37, 46)) ('ATRX', 'Gene', (32, 36)) ('cancer', 'Phenotype', 'HP:0002664', (61, 67)) 118688 24012403 Testing for these mutations promises to provide important prognostic information and further investigation of DAXX/ATRX function may uncover new insights into the pathogenesis of PNETs and other cancers. ('mutations', 'Var', (18, 27)) ('cancers', 'Disease', 'MESH:D009369', (195, 202)) ('cancers', 'Phenotype', 'HP:0002664', (195, 202)) ('PNETs', 'Disease', (179, 184)) ('cancers', 'Disease', (195, 202)) ('cancer', 'Phenotype', 'HP:0002664', (195, 201)) 118689 24012403 Recognition that genes in the mTOR pathway are mutated in at least 16% of PNETs and that the pathway's function may be impaired in up to 85% of tumors has spurred the use of mTOR inhibitors in PNETs. ('tumors', 'Disease', (144, 150)) ('tumors', 'Phenotype', 'HP:0002664', (144, 150)) ('tumors', 'Disease', 'MESH:D009369', (144, 150)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) ('PNETs', 'Disease', (74, 79)) ('function', 'MPA', (103, 111)) ('mutated', 'Var', (47, 54)) ('mTOR', 'Gene', '2475', (30, 34)) ('mTOR', 'Gene', (174, 178)) ('mTOR', 'Gene', '2475', (174, 178)) ('mTOR', 'Gene', (30, 34)) 118697 24012403 Grade 3 or 4 neutropenia and hypertension occurred in >10% of patients receiving sunitinib, while a 7% rate of grade 3 or 4 stomatitis was the most frequent serious complication in patients taking everolimus. ('hypertension', 'Disease', (29, 41)) ('neutropenia', 'Disease', 'MESH:D009503', (13, 24)) ('rat', 'Species', '10116', (103, 106)) ('hypertension', 'Phenotype', 'HP:0000822', (29, 41)) ('neutropenia', 'Phenotype', 'HP:0001875', (13, 24)) ('stomatitis', 'Disease', 'MESH:D013280', (124, 134)) ('Grade 3', 'Disease', (0, 7)) ('everolimus', 'Chemical', 'MESH:D000068338', (197, 207)) ('stomatitis', 'Disease', (124, 134)) ('patients', 'Species', '9606', (181, 189)) ('stomatitis', 'Phenotype', 'HP:0010280', (124, 134)) ('neutropenia', 'Disease', (13, 24)) ('sunitinib', 'Chemical', 'MESH:D000077210', (81, 90)) ('hypertension', 'Disease', 'MESH:D006973', (29, 41)) ('patients', 'Species', '9606', (62, 70)) ('sunitinib', 'Var', (81, 90)) 118704 24012403 Genetic testing for these mutations allows identification of at-risk individuals for screening prior to the onset of symptoms and in some cases permits prophylactic surgery.. Mutations in genes of the MAP-kinase signaling pathway (most commonly RET or BRAF) are found in most familial and sporadic thyroid cancers and cause constitutive proliferative signaling, leading to malignancy.. Small-molecule kinase inhibitors block aberrant pro-malignant signaling in several endocrine cancers and represent an active area of research with great potential. ('cancers', 'Phenotype', 'HP:0002664', (306, 313)) ('block', 'NegReg', (419, 424)) ('cancers', 'Phenotype', 'HP:0002664', (479, 486)) ('endocrine cancers', 'Disease', (469, 486)) ('cancer', 'Phenotype', 'HP:0002664', (479, 485)) ('malignancy', 'Disease', (373, 383)) ('endocrine cancers', 'Disease', 'MESH:D004701', (469, 486)) ('RET', 'Gene', '5979', (245, 248)) ('pro-malignant signaling', 'MPA', (434, 457)) ('sporadic thyroid cancers', 'Disease', (289, 313)) ('Small-molecule', 'Var', (386, 400)) ('endocrine cancer', 'Phenotype', 'HP:0100568', (469, 485)) ('aberrant', 'MPA', (425, 433)) ('sporadic thyroid cancers', 'Disease', 'MESH:D013964', (289, 313)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (298, 312)) ('rat', 'Species', '10116', (344, 347)) ('RET', 'Gene', (245, 248)) ('cancer', 'Phenotype', 'HP:0002664', (306, 312)) ('malignancy', 'Disease', 'MESH:D009369', (373, 383)) 118706 24012403 In pancreatic neuroendocrine tumors, drugs targeting somatostatin receptors alleviatesymptoms, are useful for imaging, and can prolong life. ('somatostatin', 'Gene', '6750', (53, 65)) ('pancreatic neuroendocrine tumors', 'Disease', 'MESH:D018358', (3, 35)) ('alleviatesymptoms', 'NegReg', (76, 93)) ('endocrine tumor', 'Phenotype', 'HP:0100568', (19, 34)) ('neuroendocrine tumor', 'Phenotype', 'HP:0100634', (14, 34)) ('neuroendocrine tumors', 'Phenotype', 'HP:0100634', (14, 35)) ('alleviatesymptoms', 'Disease', (76, 93)) ('somatostatin', 'Gene', (53, 65)) ('tumor', 'Phenotype', 'HP:0002664', (29, 34)) ('pancreatic neuroendocrine tumor', 'Phenotype', 'HP:0030405', (3, 34)) ('life', 'CPA', (135, 139)) ('tumors', 'Phenotype', 'HP:0002664', (29, 35)) ('prolong', 'PosReg', (127, 134)) ('drugs', 'Var', (37, 42)) ('pancreatic neuroendocrine tumors', 'Disease', (3, 35)) 118717 22995128 It highlights the importance of identifying patients with germline SDHB mutations, as these patients are at a high risk of developing malignant disease. ('mutations', 'Var', (72, 81)) ('malignant disease', 'Disease', 'MESH:D009369', (134, 151)) ('SDHB', 'Gene', '6390', (67, 71)) ('patients', 'Species', '9606', (44, 52)) ('patients', 'Species', '9606', (92, 100)) ('malignant disease', 'Disease', (134, 151)) ('SDHB', 'Gene', (67, 71)) 118733 22995128 Genetic screening of the patient demonstrated a new germinal frameshift mutation of the SDHB exon 6 [c.587-591DelC]. ('patient', 'Species', '9606', (25, 32)) ('SDHB', 'Gene', '6390', (88, 92)) ('[c.587-591DelC]', 'Var', (100, 115)) ('SDHB', 'Gene', (88, 92)) 118758 22995128 There are five types of familial paraganglioma [PGL] syndromes that have been identified with mutations in the SDH genes that encode subunits of the heterotetrameric SDH complex. ('mutations', 'Var', (94, 103)) ('SDH', 'Gene', '6390', (166, 169)) ('SDH', 'Gene', '6390', (111, 114)) ('familial paraganglioma', 'Disease', (24, 46)) ('SDH', 'Gene', (166, 169)) ('SDH', 'Gene', (111, 114)) ('paraganglioma', 'Phenotype', 'HP:0002668', (33, 46)) ('familial paraganglioma', 'Disease', 'MESH:D010235', (24, 46)) 118760 22995128 Investigation has revealed that SDHD mutations [PGL type 1] are associated with multifocal head and neck paragangliomas, whereas SDHB mutations [PGL type 4] are associated with extra-adrenal disease and malignancy. ('associated', 'Reg', (64, 74)) ('SDHD', 'Gene', '6392', (32, 36)) ('paragangliomas', 'Phenotype', 'HP:0002668', (105, 119)) ('malignancy', 'Disease', 'MESH:D009369', (203, 213)) ('extra-adrenal disease', 'Disease', 'MESH:D010236', (177, 198)) ('associated', 'Reg', (161, 171)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (100, 119)) ('SDHB', 'Gene', '6390', (129, 133)) ('malignancy', 'Disease', (203, 213)) ('SDHD', 'Gene', (32, 36)) ('SDHB', 'Gene', (129, 133)) ('mutations', 'Var', (37, 46)) ('neck paragangliomas', 'Disease', (100, 119)) ('extra-adrenal disease', 'Disease', (177, 198)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (91, 119)) ('mutations', 'Var', (134, 143)) ('adrenal disease', 'Phenotype', 'HP:0000834', (183, 198)) ('paraganglioma', 'Phenotype', 'HP:0002668', (105, 118)) 118761 22995128 Several studies have suggested that patients who are carriers of the SDHB mutation [PGL type 4], like the patient we describe, are more likely to develop extra-adrenal lesions [abdominal or thoracic] and malignant disease. ('mutation', 'Var', (74, 82)) ('SDHB', 'Gene', (69, 73)) ('malignant disease', 'Disease', (204, 221)) ('patients', 'Species', '9606', (36, 44)) ('patient', 'Species', '9606', (106, 113)) ('develop', 'PosReg', (146, 153)) ('extra-adrenal lesions', 'Disease', (154, 175)) ('SDHB', 'Gene', '6390', (69, 73)) ('malignant disease', 'Disease', 'MESH:D009369', (204, 221)) ('patient', 'Species', '9606', (36, 43)) 118765 22995128 Tumors with significant atypia and pleomorphism have often behaved in benign fashion, possibly because they were removed before metastasis. ('Tumors', 'Disease', (0, 6)) ('pleomorphism', 'Var', (35, 47)) ('Tumors', 'Phenotype', 'HP:0002664', (0, 6)) ('Tumors', 'Disease', 'MESH:D009369', (0, 6)) 118786 22995128 The case highlights the importance of offering targeted genetic testing for the SDHB gene mutations to a patient with multiple, extra-adrenal paragangliomas and a family history of malignant paraganglioma. ('patient', 'Species', '9606', (105, 112)) ('extra-adrenal paragangliomas', 'Disease', 'MESH:D010236', (128, 156)) ('mutations', 'Var', (90, 99)) ('malignant paraganglioma', 'Disease', (181, 204)) ('SDHB', 'Gene', (80, 84)) ('malignant paraganglioma', 'Disease', 'MESH:C565335', (181, 204)) ('extra-adrenal paragangliomas', 'Disease', (128, 156)) ('paraganglioma', 'Phenotype', 'HP:0002668', (142, 155)) ('paragangliomas', 'Phenotype', 'HP:0002668', (142, 156)) ('paraganglioma', 'Phenotype', 'HP:0002668', (191, 204)) ('SDHB', 'Gene', '6390', (80, 84)) 118787 22995128 It also illustrates the importance of identifying patients with germline SDHB mutations, as these patients are at a high risk of developing malignant disease. ('patients', 'Species', '9606', (50, 58)) ('malignant disease', 'Disease', 'MESH:D009369', (140, 157)) ('patients', 'Species', '9606', (98, 106)) ('malignant disease', 'Disease', (140, 157)) ('mutations', 'Var', (78, 87)) ('SDHB', 'Gene', '6390', (73, 77)) ('SDHB', 'Gene', (73, 77)) 118991 32266223 Aberrant expression of miRNAs has been identified in many types of cancer. ('cancer', 'Disease', 'MESH:D009369', (67, 73)) ('miRNAs', 'Protein', (23, 29)) ('cancer', 'Disease', (67, 73)) ('Aberrant', 'Var', (0, 8)) ('cancer', 'Phenotype', 'HP:0002664', (67, 73)) ('identified', 'Reg', (39, 49)) 118995 32266223 Identified co-expression miRNA-mRNA pairs in the current study can be applied as targets for clinical co-detection of ependymoma. ('miRNA-mRNA', 'Var', (25, 35)) ('ependymoma', 'Disease', 'MESH:D004806', (118, 128)) ('ependymoma', 'Phenotype', 'HP:0002888', (118, 128)) ('ependymoma', 'Disease', (118, 128)) 119012 32266223 Beside the KEGG and GO functional annotations, we enriched the modules with reported multi-omics ependymoma signatures: the 51 gene expression signatures of ependymoma survival from Supplementary Table 6 of, and the validated 632 amplification and deletion genes of ependymoma from Supplementary Tables 5a,b of. ('ependymoma', 'Phenotype', 'HP:0002888', (97, 107)) ('ependymoma', 'Disease', (157, 167)) ('ependymoma', 'Phenotype', 'HP:0002888', (266, 276)) ('ependymoma', 'Disease', 'MESH:D004806', (97, 107)) ('ependymoma', 'Disease', (97, 107)) ('ependymoma', 'Disease', 'MESH:D004806', (266, 276)) ('ependymoma', 'Disease', (266, 276)) ('ependymoma', 'Phenotype', 'HP:0002888', (157, 167)) ('deletion', 'Var', (248, 256)) ('ependymoma', 'Disease', 'MESH:D004806', (157, 167)) 119015 32266223 For the 728 genes with validated deletion in ependymoma, they were marginally significantly mapped onto the light cyan module with a hypergeometric test FDR of 0.0770 and there were 18 overlapped genes. ('ependymoma', 'Disease', 'MESH:D004806', (45, 55)) ('deletion', 'Var', (33, 41)) ('ependymoma', 'Disease', (45, 55)) ('ependymoma', 'Phenotype', 'HP:0002888', (45, 55)) 119016 32266223 It can be seen that the modules were associated with ependymoma survival and DNA copy number alterations (CNAs). ('copy number', 'Var', (81, 92)) ('ependymoma', 'Phenotype', 'HP:0002888', (53, 63)) ('ependymoma', 'Disease', (53, 63)) ('ependymoma', 'Disease', 'MESH:D004806', (53, 63)) ('associated', 'Reg', (37, 47)) ('DNA', 'Gene', (77, 80)) 119057 32266223 Dysregulation of WNT signaling was associated with various solid tumors, including glioblastoma. ('WNT signaling', 'Pathway', (17, 30)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) ('Dysregulation', 'Var', (0, 13)) ('associated', 'Reg', (35, 45)) ('tumors', 'Disease', (65, 71)) ('tumors', 'Disease', 'MESH:D009369', (65, 71)) ('tumors', 'Phenotype', 'HP:0002664', (65, 71)) ('glioblastoma', 'Disease', (83, 95)) ('glioblastoma', 'Disease', 'MESH:D005909', (83, 95)) ('glioblastoma', 'Phenotype', 'HP:0012174', (83, 95)) 119128 31355101 A recent review of 17 patients with metastases of pheochromocytoma in the thorax, abdomen, or pelvis who were treated with a variety of modern radiotherapy techniques, including IMRT, showed EBRT to be effective for local control and symptomatic relief in 76% of patients especially in conjunction with I131-MIBG in cases of bulky tumors. ('I131-MIBG', 'Chemical', '-', (303, 312)) ('tumors', 'Disease', 'MESH:D009369', (331, 337)) ('metastases of pheochromocytoma', 'Disease', (36, 66)) ('tumor', 'Phenotype', 'HP:0002664', (331, 336)) ('patients', 'Species', '9606', (263, 271)) ('metastases of pheochromocytoma', 'Disease', 'MESH:D009362', (36, 66)) ('patients', 'Species', '9606', (22, 30)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (50, 66)) ('EBRT', 'Var', (191, 195)) ('tumors', 'Phenotype', 'HP:0002664', (331, 337)) ('tumors', 'Disease', (331, 337)) ('local control', 'CPA', (216, 229)) 119154 31125973 Pheochromocytomas (PHEOs) occur in about 0.1-5.7% of patients with NF1 mutations. ('PHEOs', 'Phenotype', 'HP:0002666', (19, 24)) ('Pheochromocytomas', 'Disease', 'MESH:D010673', (0, 17)) ('NF1', 'Gene', (67, 70)) ('patients', 'Species', '9606', (53, 61)) ('NF1', 'Gene', '4763', (67, 70)) ('mutations', 'Var', (71, 80)) ('Pheochromocytomas', 'Disease', (0, 17)) ('PHEO', 'Phenotype', 'HP:0002666', (19, 23)) ('Pheochromocytomas', 'Phenotype', 'HP:0002666', (0, 17)) ('Pheochromocytoma', 'Phenotype', 'HP:0002666', (0, 16)) 119304 29217652 multiple endocrine neoplasia type 2, Von Hippel Lindau syndrome, neurofibromatosis type 1, and mutations in succinate dehydrogenase B, C and D). ('neurofibromatosis', 'Phenotype', 'HP:0001067', (65, 82)) ('endocrine neoplasia type 2', 'Disease', 'MESH:D018813', (9, 35)) ('endocrine neoplasia', 'Phenotype', 'HP:0100568', (9, 28)) ('C and D', 'Gene', (135, 142)) ('neoplasia', 'Phenotype', 'HP:0002664', (19, 28)) ('mutations', 'Var', (95, 104)) ('Von Hippel Lindau syndrome, neurofibromatosis type 1', 'Gene', '4763', (37, 89)) ('endocrine neoplasia type 2', 'Disease', (9, 35)) 119306 29217652 All consecutive patients with an International Classification of Diseases version 10 (ICD-10) code of E27.5 (adrenomedullary hyperfunction) and/or C74.1 (malignant neoplasm of medulla of adrenal gland) and had been admitted and/or attended the out-patient clinic between June 2005 and June 2016 were eligible for inclusion. ('ICD', 'Disease', (86, 89)) ('C74.1', 'Var', (147, 152)) ('E27.5', 'Var', (102, 107)) ('neoplasm', 'Phenotype', 'HP:0002664', (164, 172)) ('patients', 'Species', '9606', (16, 24)) ('neoplasm of medulla of adrenal', 'Phenotype', 'HP:0100642', (164, 194)) ('malignant neoplasm', 'Disease', (154, 172)) ('patient', 'Species', '9606', (248, 255)) ('malignant neoplasm', 'Disease', 'MESH:D009369', (154, 172)) ('patient', 'Species', '9606', (16, 23)) ('ICD', 'Disease', 'OMIM:252500', (86, 89)) 119419 27839933 SDHB mutation status and tumor size, but not tumor grade, are important predictors of clinical outcome in pheochromocytoma and abdominal paraganglioma A staging/prognostic system has long been desired to better categorize pheochromocytoma (PC)/paraganglioma (PGL), which can be very aggressive in the setting of SDHB mutations. ('paraganglioma', 'Disease', 'MESH:D010235', (244, 257)) ('tumor', 'Phenotype', 'HP:0002664', (25, 30)) ('tumor', 'Disease', (45, 50)) ('pheochromocytoma', 'Disease', (222, 238)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (222, 238)) ('tumor', 'Disease', 'MESH:D009369', (45, 50)) ('SDHB', 'Gene', (0, 4)) ('abdominal paraganglioma', 'Disease', (127, 150)) ('mutations', 'Var', (317, 326)) ('paraganglioma', 'Disease', (137, 150)) ('paraganglioma', 'Phenotype', 'HP:0002668', (244, 257)) ('paraganglioma', 'Disease', 'MESH:D010235', (137, 150)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (106, 122)) ('tumor', 'Phenotype', 'HP:0002664', (45, 50)) ('tumor', 'Disease', (25, 30)) ('SDHB', 'Gene', '6390', (312, 316)) ('pheochromocytoma', 'Disease', (106, 122)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (106, 122)) ('tumor', 'Disease', 'MESH:D009369', (25, 30)) ('paraganglioma', 'Phenotype', 'HP:0002668', (137, 150)) ('SDHB', 'Gene', (312, 316)) ('SDHB', 'Gene', '6390', (0, 4)) ('paraganglioma', 'Disease', (244, 257)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (222, 238)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (127, 150)) 119421 27839933 Patients with SDHB mutation presented at younger age (33.0 vs. 49.6 years old, p<0.001), had increased local recurrence and distant metastases (47.6% vs. 9.1%, p<0.001, and 56.3% vs. 9.1%, p<0.001, respectively), and shorter median disease-free interval (DFI) (89.8 months, 95% CI: 36.0 - 96.4 vs. not reached, p<0.001). ('shorter', 'NegReg', (217, 224)) ('mutation', 'Var', (19, 27)) ('increased', 'PosReg', (93, 102)) ('metastases', 'Disease', (132, 142)) ('disease-free', 'MPA', (232, 244)) ('metastases', 'Disease', 'MESH:D009362', (132, 142)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', '6390', (14, 18)) ('local recurrence', 'CPA', (103, 119)) ('DFI', 'Chemical', '-', (255, 258)) ('SDHB', 'Gene', (14, 18)) 119422 27839933 SDHB mutation, greatest tumor diameter, and open surgical resection were associated with higher local recurrence and distant metastases (p=0.006 and p<0.001, p<0.001 and p<0.001, p<0.001 and p<0.001, respectively). ('tumor', 'Phenotype', 'HP:0002664', (24, 29)) ('metastases', 'Disease', (125, 135)) ('tumor', 'Disease', (24, 29)) ('local recurrence', 'CPA', (96, 112)) ('metastases', 'Disease', 'MESH:D009362', (125, 135)) ('higher', 'PosReg', (89, 95)) ('mutation', 'Var', (5, 13)) ('SDHB', 'Gene', '6390', (0, 4)) ('tumor', 'Disease', 'MESH:D009369', (24, 29)) ('SDHB', 'Gene', (0, 4)) 119423 27839933 SDHB mutation and tumor diameter were independent risk factors for local recurrence (p=0.048, p=0.04) and metastases (p=0.004, p<0.001). ('metastases', 'Disease', 'MESH:D009362', (106, 116)) ('tumor', 'Disease', (18, 23)) ('SDHB', 'Gene', '6390', (0, 4)) ('SDHB', 'Gene', (0, 4)) ('tumor', 'Disease', 'MESH:D009369', (18, 23)) ('local recurrence', 'CPA', (67, 83)) ('metastases', 'Disease', (106, 116)) ('mutation', 'Var', (5, 13)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 119424 27839933 Ki67% and MI were not associated with SDHB mutation (p=0.09, p=0.55), local recurrence (p=0.48, p=0.066), metastases (p=0.22, p=0.28) or DFI (p=0.69, p=0.19). ('metastases', 'Disease', 'MESH:D009362', (106, 116)) ('Ki67', 'Chemical', '-', (0, 4)) ('mutation', 'Var', (43, 51)) ('DFI', 'Chemical', '-', (137, 140)) ('Ki67%', 'Var', (0, 5)) ('SDHB', 'Gene', '6390', (38, 42)) ('SDHB', 'Gene', (38, 42)) ('metastases', 'Disease', (106, 116)) 119425 27839933 SDHB status and primary tumor size are more predictive of patient outcome than Ki67% or MI, and should be part of any clinically relevant prognostic scoring system. ('tumor', 'Phenotype', 'HP:0002664', (24, 29)) ('predictive', 'Reg', (44, 54)) ('tumor', 'Disease', (24, 29)) ('patient', 'Species', '9606', (58, 65)) ('status', 'Var', (5, 11)) ('Ki67', 'Chemical', '-', (79, 83)) ('SDHB', 'Gene', '6390', (0, 4)) ('tumor', 'Disease', 'MESH:D009369', (24, 29)) ('SDHB', 'Gene', (0, 4)) 119428 27839933 In the setting of SDHB mutations, PC and abdominal/pelvic PGL can be very aggressive, with a high rate of local recurrence, distant metastases, and disease-specific mortality. ('SDHB', 'Gene', (18, 22)) ('local recurrence', 'CPA', (106, 122)) ('metastases', 'Disease', (132, 142)) ('metastases', 'Disease', 'MESH:D009362', (132, 142)) ('mutations', 'Var', (23, 32)) ('abdominal/pelvic PGL', 'Disease', (41, 61)) ('SDHB', 'Gene', '6390', (18, 22)) 119431 27839933 Studies on prognostic factors associated with PC/PGL have shown the presence of SDHB mutation, primary tumor size, and age at diagnosis to be significant prognostic factors. ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('SDHB', 'Gene', (80, 84)) ('tumor', 'Disease', (103, 108)) ('mutation', 'Var', (85, 93)) ('tumor', 'Disease', 'MESH:D009369', (103, 108)) ('PC/PGL', 'Disease', (46, 52)) ('SDHB', 'Gene', '6390', (80, 84)) 119434 27839933 No current grading system includes genetic mutation status, despite the known higher risk of disease recurrence, metastases, and mortality, especially in patients with germline SDHB mutations. ('SDHB', 'Gene', '6390', (177, 181)) ('SDHB', 'Gene', (177, 181)) ('patients', 'Species', '9606', (154, 162)) ('metastases', 'Disease', (113, 123)) ('mutations', 'Var', (182, 191)) ('metastases', 'Disease', 'MESH:D009362', (113, 123)) 119437 27839933 A retrospective analysis was conducted in patients with germline testing confirming SDHB mutation status and PC or abdominal/pelvic PGL, treated at our institution from 1998 - 2015. ('SDHB', 'Gene', (84, 88)) ('patients', 'Species', '9606', (42, 50)) ('mutation', 'Var', (89, 97)) ('SDHB', 'Gene', '6390', (84, 88)) 119440 27839933 Of 256 patients with PC or abdominal/pelvic PGL, 49 carried SDHB mutations. ('carried', 'Reg', (52, 59)) ('SDHB', 'Gene', '6390', (60, 64)) ('SDHB', 'Gene', (60, 64)) ('patients', 'Species', '9606', (7, 15)) ('mutations', 'Var', (65, 74)) 119444 27839933 A majority of patients with SDHB mutation, paraganglioma, larger tumors, and/or a contraindication to laparoscopic surgery had an open approach. ('paraganglioma', 'Disease', (43, 56)) ('mutation', 'Var', (33, 41)) ('paraganglioma', 'Disease', 'MESH:D010235', (43, 56)) ('SDHB', 'Gene', '6390', (28, 32)) ('tumors', 'Disease', (65, 71)) ('tumors', 'Disease', 'MESH:D009369', (65, 71)) ('paraganglioma', 'Phenotype', 'HP:0002668', (43, 56)) ('tumors', 'Phenotype', 'HP:0002664', (65, 71)) ('patients', 'Species', '9606', (14, 22)) ('SDHB', 'Gene', (28, 32)) ('tumor', 'Phenotype', 'HP:0002664', (65, 70)) 119454 27839933 Eighty-four patients treated at the National Institutes of Health clinical center for PC/PGL were included in the study; 49 patients had germline SDHB mutations, and 35 patients had sporadic disease. ('patients', 'Species', '9606', (12, 20)) ('patients', 'Species', '9606', (169, 177)) ('SDHB', 'Gene', (146, 150)) ('sporadic disease', 'Disease', (182, 198)) ('mutations', 'Var', (151, 160)) ('sporadic disease', 'Disease', 'MESH:D004421', (182, 198)) ('SDHB', 'Gene', '6390', (146, 150)) ('patients', 'Species', '9606', (124, 132)) 119459 27839933 The follow up time for the sporadic group of patients was shorter than for patients with SDHB mutations, although this was not statistically significant (58.2 +- 8.5 vs. 95.9 +- 16.7 months, respectively, P=0.29). ('shorter', 'NegReg', (58, 65)) ('mutations', 'Var', (94, 103)) ('patients', 'Species', '9606', (75, 83)) ('SDHB', 'Gene', '6390', (89, 93)) ('patients', 'Species', '9606', (45, 53)) ('SDHB', 'Gene', (89, 93)) 119461 27839933 Patients with SDHB mutations presented at a younger age compared to patients without SDHB mutation (33.0 +- 2.3 vs. 49.6 +- 2.1 years old, respectively, p<0.001). ('mutations', 'Var', (19, 28)) ('patients', 'Species', '9606', (68, 76)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', '6390', (85, 89)) ('SDHB', 'Gene', (85, 89)) ('SDHB', 'Gene', '6390', (14, 18)) ('SDHB', 'Gene', (14, 18)) 119462 27839933 Patients with SDHB mutation were more likely to have nonfunctioning tumors and PGL (p=0.005 and p<0.001, respectively). ('mutation', 'Var', (19, 27)) ('tumors', 'Disease', (68, 74)) ('tumors', 'Disease', 'MESH:D009369', (68, 74)) ('tumors', 'Phenotype', 'HP:0002664', (68, 74)) ('Patients', 'Species', '9606', (0, 8)) ('SDHB', 'Gene', '6390', (14, 18)) ('tumor', 'Phenotype', 'HP:0002664', (68, 73)) ('PGL', 'Disease', (79, 82)) ('SDHB', 'Gene', (14, 18)) 119463 27839933 Local recurrence and distant metastases were significantly more frequent in patients with SDHB mutation compared to patients without an SDHB mutation (47.6% vs. 9.1%, p<0.001, and 56.3% vs. 9.1%, p<0.001, respectively). ('patients', 'Species', '9606', (76, 84)) ('SDHB', 'Gene', '6390', (90, 94)) ('SDHB', 'Gene', (90, 94)) ('patients', 'Species', '9606', (116, 124)) ('metastases', 'Disease', (29, 39)) ('SDHB', 'Gene', '6390', (136, 140)) ('Local recurrence', 'CPA', (0, 16)) ('metastases', 'Disease', 'MESH:D009362', (29, 39)) ('SDHB', 'Gene', (136, 140)) ('frequent', 'PosReg', (64, 72)) ('mutation', 'Var', (95, 103)) 119464 27839933 Five of the 7 patient deaths were in patients with SDHB mutations (Table 1). ('death', 'Disease', (22, 27)) ('mutations', 'Var', (56, 65)) ('patient', 'Species', '9606', (37, 44)) ('patients', 'Species', '9606', (37, 45)) ('patient', 'Species', '9606', (14, 21)) ('SDHB', 'Gene', '6390', (51, 55)) ('SDHB', 'Gene', (51, 55)) ('death', 'Disease', 'MESH:D003643', (22, 27)) 119465 27839933 Percent of tumor cell positive for Ki67 staining and MI were not significantly different between patients with and without SDHB mutation (p=0.12). ('Ki67', 'Chemical', '-', (35, 39)) ('tumor', 'Phenotype', 'HP:0002664', (11, 16)) ('tumor', 'Disease', (11, 16)) ('SDHB', 'Gene', '6390', (123, 127)) ('SDHB', 'Gene', (123, 127)) ('mutation', 'Var', (128, 136)) ('tumor', 'Disease', 'MESH:D009369', (11, 16)) ('patients', 'Species', '9606', (97, 105)) 119468 27839933 There were no locoregional recurrences in any of the 7 patients with a Ki67% of 1-3%, nor the 5 patients who had Ki67% greater than 3%. ('Ki67', 'Var', (71, 75)) ('locoregional recurrences', 'CPA', (14, 38)) ('patients', 'Species', '9606', (96, 104)) ('patients', 'Species', '9606', (55, 63)) ('Ki67', 'Chemical', '-', (71, 75)) ('Ki67', 'Chemical', '-', (113, 117)) 119473 27839933 PGL and requiring an open surgical approach were associated with distant metastases (p=0.004 and p<0.001, respectively). ('PGL', 'Var', (0, 3)) ('associated', 'Reg', (49, 59)) ('metastases', 'Disease', (73, 83)) ('metastases', 'Disease', 'MESH:D009362', (73, 83)) 119475 27839933 Ki67% and MI were not associated with distant metastases (p=0.22 and p=0.28, respectively) (Table 3). ('Ki67', 'Chemical', '-', (0, 4)) ('metastases', 'Disease', (46, 56)) ('Ki67%', 'Var', (0, 5)) ('metastases', 'Disease', 'MESH:D009362', (46, 56)) 119476 27839933 By logistic regression, only SDHB mutation status and tumor diameter were independent risk factors for locoregional recurrence (p=0.05 and p=0.04, respectively) and distant metastases (p=0.004 and p<0.001, respectively). ('SDHB', 'Gene', '6390', (29, 33)) ('locoregional recurrence', 'CPA', (103, 126)) ('metastases', 'Disease', (173, 183)) ('tumor', 'Disease', 'MESH:D009369', (54, 59)) ('mutation', 'Var', (34, 42)) ('SDHB', 'Gene', (29, 33)) ('metastases', 'Disease', 'MESH:D009362', (173, 183)) ('tumor', 'Phenotype', 'HP:0002664', (54, 59)) ('tumor', 'Disease', (54, 59)) 119477 27839933 Compared to patients with sporadic disease, patients with SDHB mutation and PC/PGL had a shorter DFI (89.8 months, 95% CI: 36.0 - 96.4 vs. median not reached, p<0.001). ('SDHB', 'Gene', (58, 62)) ('patients', 'Species', '9606', (12, 20)) ('sporadic disease', 'Disease', (26, 42)) ('patients', 'Species', '9606', (44, 52)) ('sporadic disease', 'Disease', 'MESH:D004421', (26, 42)) ('mutation', 'Var', (63, 71)) ('DFI', 'MPA', (97, 100)) ('SDHB', 'Gene', '6390', (58, 62)) ('shorter', 'NegReg', (89, 96)) ('DFI', 'Chemical', '-', (97, 100)) 119482 27839933 Ki67% and MI were not associated with DFI (p=0.69 and p=0.19, respectively) (Figure 3). ('DFI', 'Disease', (38, 41)) ('DFI', 'Chemical', '-', (38, 41)) ('Ki67%', 'Var', (0, 5)) ('Ki67', 'Chemical', '-', (0, 4)) 119483 27839933 In the Cox proportional hazards model analysis, SDHB mutation status and tumor diameter (<6.1 vs. >=6.1 cm) were found to be jointly associated with shorter DFI with a hazard ratio of 16.2 (95% CI: 1.9 - 138.5, p=0.011) and 15.4 (95% CI: 2.6 - 92.2, p=0.003), respectively. ('tumor', 'Disease', 'MESH:D009369', (73, 78)) ('mutation', 'Var', (53, 61)) ('tumor', 'Phenotype', 'HP:0002664', (73, 78)) ('DFI', 'Disease', (157, 160)) ('tumor', 'Disease', (73, 78)) ('shorter', 'NegReg', (149, 156)) ('DFI', 'Chemical', '-', (157, 160)) ('SDHB', 'Gene', '6390', (48, 52)) ('SDHB', 'Gene', (48, 52)) 119485 27839933 We found that the presence of SDHB and primary tumor size were the only two independent factors jointly associated with shorter DFI. ('presence', 'Var', (18, 26)) ('shorter DFI', 'Disease', (120, 131)) ('tumor', 'Disease', 'MESH:D009369', (47, 52)) ('SDHB', 'Gene', '6390', (30, 34)) ('SDHB', 'Gene', (30, 34)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('tumor', 'Disease', (47, 52)) ('DFI', 'Chemical', '-', (128, 131)) 119487 27839933 Our study findings suggest that a prognostic/staging system for PC and PGL should include the SDHB mutation status and primary tumor size. ('tumor', 'Phenotype', 'HP:0002664', (127, 132)) ('tumor', 'Disease', (127, 132)) ('SDHB', 'Gene', (94, 98)) ('mutation', 'Var', (99, 107)) ('tumor', 'Disease', 'MESH:D009369', (127, 132)) ('SDHB', 'Gene', '6390', (94, 98)) 119488 27839933 Our results demonstrating that SDHB mutation status is associated with younger age at presentation, PGL, local recurrence, distant metastases, and decreased survival are consistent with previous studies. ('metastases', 'Disease', (131, 141)) ('SDHB', 'Gene', (31, 35)) ('survival', 'CPA', (157, 165)) ('decreased', 'NegReg', (147, 156)) ('metastases', 'Disease', 'MESH:D009362', (131, 141)) ('PGL', 'Disease', (100, 103)) ('SDHB', 'Gene', '6390', (31, 35)) ('mutation', 'Var', (36, 44)) ('local recurrence', 'CPA', (105, 121)) 119490 27839933 Our finding that SDHB mutation status and primary tumor size are more predictive of patient outcomes than Ki67% or MI suggests that histologic-based grading systems may not be as useful. ('Ki67', 'Chemical', '-', (106, 110)) ('SDHB', 'Gene', '6390', (17, 21)) ('predictive', 'Reg', (70, 80)) ('mutation status', 'Var', (22, 37)) ('tumor', 'Disease', 'MESH:D009369', (50, 55)) ('tumor', 'Phenotype', 'HP:0002664', (50, 55)) ('SDHB', 'Gene', (17, 21)) ('tumor', 'Disease', (50, 55)) ('patient', 'Species', '9606', (84, 91)) 119491 27839933 We found that Ki67% and MI are not associated with locoregional recurrence or distant metastases, nor were they associated with SDHB mutation status and shorter DFI. ('metastases', 'Disease', (86, 96)) ('SDHB', 'Gene', (128, 132)) ('metastases', 'Disease', 'MESH:D009362', (86, 96)) ('Ki67', 'Chemical', '-', (14, 18)) ('DFI', 'Chemical', '-', (161, 164)) ('mutation status', 'Var', (133, 148)) ('Ki67%', 'Var', (14, 19)) ('locoregional recurrence', 'CPA', (51, 74)) ('SDHB', 'Gene', '6390', (128, 132)) ('associated', 'Reg', (112, 122)) 119492 27839933 We found an association between SDHB mutation, primary tumor size, requiring an open surgical approach, PGL and shorter DFI. ('tumor', 'Disease', 'MESH:D009369', (55, 60)) ('SDHB', 'Gene', '6390', (32, 36)) ('mutation', 'Var', (37, 45)) ('tumor', 'Phenotype', 'HP:0002664', (55, 60)) ('SDHB', 'Gene', (32, 36)) ('tumor', 'Disease', (55, 60)) ('DFI', 'Chemical', '-', (120, 123)) ('PGL', 'Disease', (104, 107)) 119494 27839933 Although an association between Ki67% staining and metastatic disease has been reported, only a limited number of cases were analyzed. ('metastatic', 'Disease', (51, 61)) ('Ki67', 'Var', (32, 36)) ('Ki67', 'Chemical', '-', (32, 36)) 119495 27839933 The GAPP score which includes Ki67% was based on a series of patients in which only 25% had metastatic disease, and 8% of patients had an SDHB mutations. ('SDHB', 'Gene', (138, 142)) ('Ki67', 'Chemical', '-', (30, 34)) ('patients', 'Species', '9606', (61, 69)) ('patients', 'Species', '9606', (122, 130)) ('SDHB', 'Gene', '6390', (138, 142)) ('mutations', 'Var', (143, 152)) 119496 27839933 One limitation of this study is a selection bias inherent in being a referral center for familial and aggressive cases of PC and PGL, which accounts for the large proportion of SDHB mutations, who may have closer postoperative surveillance as compared to patients with sporadic disease. ('SDHB', 'Gene', '6390', (177, 181)) ('SDHB', 'Gene', (177, 181)) ('patients', 'Species', '9606', (255, 263)) ('sporadic disease', 'Disease', (269, 285)) ('sporadic disease', 'Disease', 'MESH:D004421', (269, 285)) ('mutations', 'Var', (182, 191)) 119497 27839933 The advantage to this referral pattern was the opportunity to examine a significant number of samples from patients with SDHB mutations and aggressive cancers. ('patients', 'Species', '9606', (107, 115)) ('SDHB', 'Gene', (121, 125)) ('cancer', 'Phenotype', 'HP:0002664', (151, 157)) ('cancers', 'Phenotype', 'HP:0002664', (151, 158)) ('mutations', 'Var', (126, 135)) ('aggressive cancers', 'Disease', 'MESH:D009369', (140, 158)) ('SDHB', 'Gene', '6390', (121, 125)) ('aggressive cancers', 'Disease', (140, 158)) 119500 27839933 In our study, the risk for an SDHB mutation or tumor over 5 cm in diameter to have local recurrence and distant metastasis was extremely high. ('tumor', 'Disease', 'MESH:D009369', (47, 52)) ('SDHB', 'Gene', '6390', (30, 34)) ('local recurrence', 'CPA', (83, 99)) ('SDHB', 'Gene', (30, 34)) ('mutation', 'Var', (35, 43)) ('tumor', 'Phenotype', 'HP:0002664', (47, 52)) ('distant metastasis', 'CPA', (104, 122)) ('tumor', 'Disease', (47, 52)) 119501 27839933 Given the association of an SDHB mutation and tumor size with significantly higher rates of local recurrence and distant metastasis, any scoring system that does not take these factors into consideration may not accurately predict outcomes and identify high-risk patients who require closer surveillance or adjuvant therapy after surgical treatment for PC/PGL. ('local recurrence', 'CPA', (92, 108)) ('mutation', 'Var', (33, 41)) ('tumor', 'Phenotype', 'HP:0002664', (46, 51)) ('association', 'Interaction', (10, 21)) ('patients', 'Species', '9606', (263, 271)) ('tumor', 'Disease', (46, 51)) ('distant metastasis', 'CPA', (113, 131)) ('higher', 'PosReg', (76, 82)) ('SDHB', 'Gene', '6390', (28, 32)) ('SDHB', 'Gene', (28, 32)) ('tumor', 'Disease', 'MESH:D009369', (46, 51)) 119502 27839933 Historically approximately 10% of PCs/PGLs were thought to be familial, but discovery of SDHx, MAX, and other mutations has increased this estimate to as high as 40%, with apparently sporadic cases also bearing somatic mutations when subjected to whole exome or next generation sequencing. ('SDHx', 'Chemical', '-', (89, 93)) ('SDHx', 'Gene', (89, 93)) ('mutations', 'Var', (110, 119)) 119503 27839933 For example, tumors in patients with SDHB mutations have unique metabolic and expression profiles. ('tumors', 'Disease', (13, 19)) ('tumors', 'Disease', 'MESH:D009369', (13, 19)) ('patients', 'Species', '9606', (23, 31)) ('SDHB', 'Gene', '6390', (37, 41)) ('tumors', 'Phenotype', 'HP:0002664', (13, 19)) ('SDHB', 'Gene', (37, 41)) ('tumor', 'Phenotype', 'HP:0002664', (13, 18)) ('mutations', 'Var', (42, 51)) 119505 27839933 Clinical therapies directed at altered pathways in SDHB mutations can also be better applied with knowledge of mutation status and high likelihood of recurrence and metastases. ('mutations', 'Var', (56, 65)) ('metastases', 'Disease', 'MESH:D009362', (165, 175)) ('SDHB', 'Gene', '6390', (51, 55)) ('SDHB', 'Gene', (51, 55)) ('metastases', 'Disease', (165, 175)) 119506 27839933 In summary, our study results support that patients with SDHB mutations and large tumors are at very high risk for recurrence and distant metastases, and these patients should have close postoperative surveillance. ('patients', 'Species', '9606', (160, 168)) ('metastases', 'Disease', (138, 148)) ('tumors', 'Disease', (82, 88)) ('tumors', 'Disease', 'MESH:D009369', (82, 88)) ('tumors', 'Phenotype', 'HP:0002664', (82, 88)) ('SDHB', 'Gene', '6390', (57, 61)) ('patients', 'Species', '9606', (43, 51)) ('metastases', 'Disease', 'MESH:D009362', (138, 148)) ('tumor', 'Phenotype', 'HP:0002664', (82, 87)) ('SDHB', 'Gene', (57, 61)) ('recurrence', 'CPA', (115, 125)) ('mutations', 'Var', (62, 71)) 119510 27839933 Future studies are needed to determine if the incorporation of certain pathologic features such as Ki67%, differentiation, or necrosis may further augment the prognostic accuracy of genetic status and primary size. ('necrosis', 'Disease', (126, 134)) ('primary size', 'CPA', (201, 213)) ('Ki67', 'Chemical', '-', (99, 103)) ('augment', 'PosReg', (147, 154)) ('necrosis', 'Disease', 'MESH:D009336', (126, 134)) ('genetic status', 'CPA', (182, 196)) ('Ki67%', 'Var', (99, 104)) ('differentiation', 'Disease', (106, 121)) 119511 27839933 It is possible Ki67% may augment a grading system that includes mutation status and primary tumor size, but histologic data in isolation is not sufficient for a valuable grading/staging system, and in the setting of SDHB mutations, may not be predictive of prognosis. ('mutations', 'Var', (221, 230)) ('tumor', 'Disease', 'MESH:D009369', (92, 97)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('SDHB', 'Gene', '6390', (216, 220)) ('tumor', 'Disease', (92, 97)) ('SDHB', 'Gene', (216, 220)) ('Ki67', 'Var', (15, 19)) ('Ki67', 'Chemical', '-', (15, 19)) 119522 27822452 MEN 2 is caused by a dominant autosomal mutation within the RET proto-oncogene (Brandi et al., 2001). ('caused by', 'Reg', (9, 18)) ('RET', 'Gene', (60, 63)) ('MEN 2', 'Disease', (0, 5)) ('MEN', 'Species', '9606', (0, 3)) ('RET', 'Gene', '5979', (60, 63)) ('autosomal mutation', 'Var', (30, 48)) 119576 27822452 In humans, 27% of PCC are hereditary and associated with mutations in several genes, of which RET proto-oncogene is responsible for MEN 2 (Subramaniam, 2011). ('PCC', 'Phenotype', 'HP:0002666', (18, 21)) ('associated', 'Reg', (41, 51)) ('RET', 'Gene', '5979', (94, 97)) ('mutations', 'Var', (57, 66)) ('humans', 'Species', '9606', (3, 9)) ('RET', 'Gene', (94, 97)) ('MEN', 'Species', '9606', (132, 135)) ('PCC', 'Disease', (18, 21)) 119610 24899893 The identification of the mutation responsible for the paraganglioma/pheochromocytoma phenotype in a patient may be crucial in determining the treatment and allowing specific follow-up guidelines, ultimately leading to a better prognosis. ('leading to', 'Reg', (208, 218)) ('mutation', 'Var', (26, 34)) ('glioma', 'Phenotype', 'HP:0009733', (62, 68)) ('paraganglioma', 'Phenotype', 'HP:0002668', (55, 68)) ('paraganglioma/pheochromocytoma', 'Disease', (55, 85)) ('patient', 'Species', '9606', (101, 108)) ('paraganglioma/pheochromocytoma', 'Disease', 'MESH:D010673', (55, 85)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (69, 85)) 119633 24899893 Of particular importance are the germline mutations in the SHDB gene (discussed in detail later), which have been associated with up to 72% of malignant tumors. ('germline mutations', 'Var', (33, 51)) ('malignant tumors', 'Disease', (143, 159)) ('tumor', 'Phenotype', 'HP:0002664', (153, 158)) ('malignant tumors', 'Disease', 'MESH:D018198', (143, 159)) ('associated', 'Reg', (114, 124)) ('tumors', 'Phenotype', 'HP:0002664', (153, 159)) ('SHDB', 'Gene', (59, 63)) 119641 24899893 In this study, it was found that 24% of the patients who presented with nonsyndromic pheochromocytoma and without family history of the disease had mutations in VHL, RET, SDHD, and SDHB genes. ('nonsyndromic pheochromocytoma', 'Disease', (72, 101)) ('mutations', 'Var', (148, 157)) ('patients', 'Species', '9606', (44, 52)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (85, 101)) ('RET', 'Gene', '5979', (166, 169)) ('SDHD', 'Gene', '6392', (171, 175)) ('VHL', 'Gene', (161, 164)) ('SDHB', 'Gene', '6390', (181, 185)) ('SDHD', 'Gene', (171, 175)) ('SDHB', 'Gene', (181, 185)) ('VHL', 'Gene', '7428', (161, 164)) ('RET', 'Gene', (166, 169)) ('nonsyndromic pheochromocytoma', 'Disease', 'MESH:D010673', (72, 101)) 119642 24899893 Younger age at presentation (24.9 versus 43.9 years of age), multiple tumors (32% versus 2%), and presence of extra-adrenal tumors (28% versus 8%) were significantly associated with the presence of a mutation. ('tumor', 'Phenotype', 'HP:0002664', (70, 75)) ('extra-adrenal tumors', 'Disease', 'MESH:D010236', (110, 130)) ('tumor', 'Phenotype', 'HP:0002664', (124, 129)) ('extra-adrenal tumors', 'Disease', (110, 130)) ('tumors', 'Phenotype', 'HP:0002664', (70, 76)) ('tumors', 'Phenotype', 'HP:0002664', (124, 130)) ('multiple tumors', 'Disease', (61, 76)) ('multiple tumors', 'Disease', 'MESH:D009369', (61, 76)) ('mutation', 'Var', (200, 208)) 119643 24899893 In 2006, a study comprising a larger number of patients with pheochromocytoma/paraganglioma showed that 33% of the patients carried germline mutations in one of the following genes: VHL, RET, NF1, SDHB, and SDHD. ('SDHD', 'Gene', (207, 211)) ('SDHD', 'Gene', '6392', (207, 211)) ('patients', 'Species', '9606', (115, 123)) ('mutations', 'Var', (141, 150)) ('pheochromocytoma/paraganglioma', 'Disease', 'MESH:D010673', (61, 91)) ('RET', 'Gene', '5979', (187, 190)) ('SDHB', 'Gene', '6390', (197, 201)) ('patients', 'Species', '9606', (47, 55)) ('SDHB', 'Gene', (197, 201)) ('VHL', 'Gene', (182, 185)) ('NF1', 'Gene', (192, 195)) ('glioma', 'Phenotype', 'HP:0009733', (85, 91)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (61, 77)) ('VHL', 'Gene', '7428', (182, 185)) ('NF1', 'Gene', '4763', (192, 195)) ('pheochromocytoma/paraganglioma', 'Disease', (61, 91)) ('RET', 'Gene', (187, 190)) ('paraganglioma', 'Phenotype', 'HP:0002668', (78, 91)) 119658 24899893 Conversely, in hypoxic conditions or when VHL gene is mutated, HIFalpha is able to interact with HIFbeta, inducing the transcription of hypoxia-inducible genes, leading to an increased expression of angiogenic growth and mitogenic factors. ('angiogenic growth', 'CPA', (199, 216)) ('inducing', 'PosReg', (106, 114)) ('expression', 'MPA', (185, 195)) ('hypoxia', 'Disease', (136, 143)) ('transcription', 'MPA', (119, 132)) ('hypoxia', 'Disease', 'MESH:D000860', (136, 143)) ('mutated', 'Var', (54, 61)) ('hypoxic conditions', 'Disease', (15, 33)) ('increased', 'PosReg', (175, 184)) ('VHL', 'Gene', (42, 45)) ('VHL', 'Gene', '7428', (42, 45)) ('hypoxic conditions', 'Disease', 'MESH:D009135', (15, 33)) ('mitogenic factors', 'CPA', (221, 238)) 119662 24899893 Although genetic testing studies have been able to identify mutations in virtually every VHL-affected family, diagnosis is still challenging in up to 20% of affected kindreds in which a de novo mutation occurs. ('mutations', 'Var', (60, 69)) ('VHL', 'Gene', '7428', (89, 92)) ('VHL', 'Gene', (89, 92)) 119663 24899893 Genotype-phenotype correlation studies have shown that VHL type 1 families frequently harbor VHL deletions or nonsense mutations, whereas families at risk for developing pheochromocytoma (type 2 families) almost invariably present with VHL missense mutations. ('pheochromocytoma', 'Disease', (170, 186)) ('VHL', 'Gene', (236, 239)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (170, 186)) ('VHL', 'Gene', '7428', (93, 96)) ('VHL', 'Gene', '7428', (236, 239)) ('missense mutations', 'Var', (240, 258)) ('nonsense mutations', 'Var', (110, 128)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (170, 186)) ('VHL', 'Gene', '7428', (55, 58)) ('VHL', 'Gene', (55, 58)) ('deletions', 'Var', (97, 106)) ('VHL', 'Gene', (93, 96)) ('harbor', 'Reg', (86, 92)) 119664 24899893 Particularly, missense mutations at codon 167 were associated with a high risk of developing pheochromocytoma (53% and 82% at ages 30 and 50 years, resp.). ('pheochromocytoma', 'Phenotype', 'HP:0002666', (93, 109)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (93, 109)) ('associated', 'Reg', (51, 61)) ('missense mutations', 'Var', (14, 32)) ('pheochromocytoma', 'Disease', (93, 109)) 119665 24899893 VHL mutations associated with the phenotype 2A or 2B have been shown to affect the proteasomal degradation of HIF1, whereas type 2C mutations do not disrupt the ability of pVHL to downregulate HIF1, suggesting that pheochromocytoma formation is not related with HIF1 expression levels. ('VHL', 'Gene', (173, 176)) ('HIF1', 'Gene', '3091', (110, 114)) ('HIF1', 'Gene', '3091', (262, 266)) ('VHL', 'Gene', '7428', (0, 3)) ('HIF1', 'Gene', (110, 114)) ('HIF1', 'Gene', (262, 266)) ('downregulate', 'NegReg', (180, 192)) ('VHL', 'Gene', '7428', (173, 176)) ('pVHL', 'Gene', '7428', (172, 176)) ('pVHL', 'Gene', (172, 176)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (215, 231)) ('HIF1', 'Gene', '3091', (193, 197)) ('mutations', 'Var', (4, 13)) ('HIF1', 'Gene', (193, 197)) ('pheochromocytoma', 'Disease', (215, 231)) ('affect', 'Reg', (72, 78)) ('proteasomal degradation', 'MPA', (83, 106)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (215, 231)) ('VHL', 'Gene', (0, 3)) 119674 24899893 More than 98% of MEN 2A families present with missense mutations in one of five codons: 609, 611, 618, 620 (exon 10), or 634 (exon 11). ('MEN 2A', 'Gene', (17, 23)) ('missense mutations', 'Var', (46, 64)) ('618', 'Var', (98, 101)) ('MEN 2A', 'Gene', '5979', (17, 23)) 119675 24899893 Codon 634 mutations represent almost 90% of MEN 2A cases and a cysteine to arginine substitution at this codon (p.Cys634Arg) is found in more than 50% of cases. ('cysteine', 'Chemical', 'MESH:D003545', (63, 71)) ('Codon', 'Var', (0, 5)) ('arginine', 'Chemical', 'MESH:D001120', (75, 83)) ('MEN 2A', 'Gene', '5979', (44, 50)) ('MEN 2A', 'Gene', (44, 50)) ('p.Cys634Arg', 'Mutation', 'rs75076352', (112, 123)) ('p.Cys634Arg', 'Var', (112, 123)) 119676 24899893 All these mutations affect cysteine residues in the RET extracellular domain and induce a ligand-independent dimerization of RET, leading to a constitutive activation of its intrinsic tyrosine kinase. ('cysteine residues', 'MPA', (27, 44)) ('induce', 'Reg', (81, 87)) ('RET', 'Gene', (52, 55)) ('activation', 'PosReg', (156, 166)) ('ligand-independent dimerization', 'MPA', (90, 121)) ('intrinsic tyrosine kinase', 'MPA', (174, 199)) ('RET', 'Gene', '5979', (52, 55)) ('RET', 'Gene', '5979', (125, 128)) ('cysteine', 'Chemical', 'MESH:D003545', (27, 35)) ('mutations', 'Var', (10, 19)) ('affect', 'Reg', (20, 26)) ('RET', 'Gene', (125, 128)) 119679 24899893 Generally, MEN 2B tumors are a consequence of mutations in the substrate binding pocket of the RET tyrosine kinase. ('MEN 2B tumors', 'Disease', 'MESH:D018814', (11, 24)) ('RET', 'Gene', (95, 98)) ('mutations', 'Var', (46, 55)) ('MEN 2B tumors', 'Disease', (11, 24)) ('tumors', 'Phenotype', 'HP:0002664', (18, 24)) ('RET', 'Gene', '5979', (95, 98)) ('tumor', 'Phenotype', 'HP:0002664', (18, 23)) 119680 24899893 A single missense mutation in codon 918 (p.Met918Thr) is responsible for over 90% of MEN 2B cases, whereas other rare mutations have been described in exons 14 and 15. ('p.Met918Thr', 'Var', (41, 52)) ('p.Met918Thr', 'Mutation', 'rs74799832', (41, 52)) ('MEN 2B', 'Gene', '5979', (85, 91)) ('MEN 2B', 'Gene', (85, 91)) 119687 24899893 reported an overall penetrance of pheochromocytoma of 32%, with a median age at diagnosis of 34 years; the earliest pheochromocytoma was observed at 15 years; bilateral pheochromocytomas were observed in 66% of patients; the following codon-specific expression of pheochromocytoma was observed: codon 634 was expressed in 50%, codon 618 was expressed in 22%, codon 620 was expressed in 9%, and codon 609 was expressed in 4%. ('pheochromocytoma', 'Disease', (169, 185)) ('bilateral pheochromocytomas', 'Disease', (159, 186)) ('patients', 'Species', '9606', (211, 219)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (264, 280)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (169, 185)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (169, 186)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (34, 50)) ('bilateral pheochromocytomas', 'Disease', 'MESH:D010673', (159, 186)) ('codon 634', 'Var', (295, 304)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (116, 132)) ('pheochromocytoma', 'Disease', (116, 132)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (169, 185)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (34, 50)) ('pheochromocytoma', 'Disease', (34, 50)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (116, 132)) ('pheochromocytoma', 'Disease', (264, 280)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (264, 280)) 119689 24899893 Childhood pheochromocytoma is rare in MEN 2, but reports at 12 years of age have occurred for both the 918 and 634 RET mutations. ('pheochromocytoma', 'Phenotype', 'HP:0002666', (10, 26)) ('RET', 'Gene', '5979', (115, 118)) ('MEN', 'Species', '9606', (38, 41)) ('mutations', 'Var', (119, 128)) ('pheochromocytoma', 'Disease', (10, 26)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (10, 26)) ('RET', 'Gene', (115, 118)) 119690 24899893 Therefore, the ATA recommends that pheochromocytoma screening (by plasma or 24-hour urine fractionated metanephrines) should begin by age 8 in carriers of RET mutations associated with MEN 2B and mutated RET codons 634 and 630 and by the age 20 years in carriers of other MEN 2A RET mutations. ('MEN 2B', 'Gene', '5979', (185, 191)) ('RET', 'Gene', '5979', (279, 282)) ('RET', 'Gene', '5979', (155, 158)) ('mutations', 'Var', (159, 168)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (35, 51)) ('MEN 2A', 'Gene', (272, 278)) ('metanephrine', 'Chemical', 'MESH:D008676', (103, 115)) ('RET', 'Gene', '5979', (204, 207)) ('RET', 'Gene', (279, 282)) ('RET', 'Gene', (155, 158)) ('MEN 2A', 'Gene', '5979', (272, 278)) ('MEN 2B', 'Gene', (185, 191)) ('mutated', 'Var', (196, 203)) ('pheochromocytoma', 'Disease', (35, 51)) ('RET', 'Gene', (204, 207)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (35, 51)) 119691 24899893 Patients with RET mutations associated only with FMTC should be screened at least periodically from the age of 20 years. ('RET', 'Gene', '5979', (14, 17)) ('Patients', 'Species', '9606', (0, 8)) ('RET', 'Gene', (14, 17)) ('MTC', 'Phenotype', 'HP:0002865', (50, 53)) ('mutations', 'Var', (18, 27)) 119695 24899893 NF 1 is caused by loss of function mutations in the tumor-suppressor NF1 gene. ('NF1', 'Gene', '4763', (69, 72)) ('tumor', 'Phenotype', 'HP:0002664', (52, 57)) ('NF 1', 'Gene', '4763', (0, 4)) ('tumor', 'Disease', (52, 57)) ('loss of function', 'NegReg', (18, 34)) ('tumor', 'Disease', 'MESH:D009369', (52, 57)) ('NF1', 'Gene', (69, 72)) ('NF 1', 'Gene', (0, 4)) ('mutations', 'Var', (35, 44)) 119698 24899893 Mutations in NF1 gene result in constitutive activation of RAS activity triggering a kinase cascade and the activation of mitogen-activated protein kinases (MAPK), mammalian target of rapamycin (mTOR), and PI3 K pathways, therefore regulating the transcription of genes associated with cell proliferation, cell death, differentiation, and migration. ('regulating', 'Reg', (232, 242)) ('mitogen-activated', 'Pathway', (122, 139)) ('transcription', 'MPA', (247, 260)) ('kinase cascade', 'Pathway', (85, 99)) ('NF1', 'Gene', (13, 16)) ('RAS', 'Protein', (59, 62)) ('PI3 K pathways', 'Pathway', (206, 220)) ('triggering', 'Reg', (72, 82)) ('Mutations', 'Var', (0, 9)) ('mammalian target of rapamycin', 'Gene', (164, 193)) ('NF1', 'Gene', '4763', (13, 16)) ('mammalian target of rapamycin', 'Gene', '2475', (164, 193)) ('mTOR', 'Gene', '2475', (195, 199)) ('activation', 'PosReg', (45, 55)) ('mTOR', 'Gene', (195, 199)) ('activation', 'PosReg', (108, 118)) 119699 24899893 Mutational analysis in NF 1 patients remains a considerable challenge due to the occurrence of different types of mutations (nonsense, missense, or deletions) that span the entire length of the NF1 gene, the presence of 36 pseudogenes, and the fact that nearly half of NF 1 cases present de novo mutations. ('NF1', 'Gene', (194, 197)) ('NF1', 'Gene', '4763', (194, 197)) ('NF 1', 'Gene', '4763', (269, 273)) ('NF 1', 'Gene', (269, 273)) ('missense', 'Var', (135, 143)) ('deletions', 'Var', (148, 157)) ('NF 1', 'Gene', '4763', (23, 27)) ('NF 1', 'Gene', (23, 27)) ('patients', 'Species', '9606', (28, 36)) 119707 24899893 Unlike mutations in VHL or MEN 2 disorders, NF 1 mutations that offer an increased risk in pheochromocytoma remain to be identified. ('mutations', 'Var', (49, 58)) ('pheochromocytoma', 'Disease', (91, 107)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (91, 107)) ('MEN', 'Species', '9606', (27, 30)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (91, 107)) ('VHL', 'Gene', (20, 23)) ('NF 1', 'Gene', '4763', (44, 48)) ('NF 1', 'Gene', (44, 48)) ('VHL', 'Gene', '7428', (20, 23)) 119709 24899893 Moreover, in accordance with the Knudson's two-hit theory that states that pheochromocytoma development requires biallelic inactivation, loss of heterozygosity (LOH) was shown in NF 1-related pheochromocytoma. ('pheochromocytoma', 'Disease', (192, 208)) ('pheochromocytoma', 'Disease', (75, 91)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (192, 208)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (192, 208)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (75, 91)) ('loss', 'Var', (137, 141)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (75, 91)) ('NF 1', 'Gene', '4763', (179, 183)) ('NF 1', 'Gene', (179, 183)) 119710 24899893 No association was found between NF1 mutational genotype and the clinical features of pheochromocytoma. ('pheochromocytoma', 'Disease', 'MESH:D010673', (86, 102)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (86, 102)) ('NF1', 'Gene', (33, 36)) ('NF1', 'Gene', '4763', (33, 36)) ('mutational', 'Var', (37, 47)) ('pheochromocytoma', 'Disease', (86, 102)) 119711 24899893 Familial paraganglioma syndromes (PGLs) are a group of autosomal dominant disorders responsible for the development of paragangliomas/pheochromocytomas caused by mutations in the genes encoding for the succinate dehydrogenase (SDH) mitochondrial complex. ('glioma', 'Phenotype', 'HP:0009733', (126, 132)) ('Familial paraganglioma syndromes', 'Disease', 'MESH:D010235', (0, 32)) ('succinate dehydrogenase', 'Gene', (202, 225)) ('SDH', 'Gene', (227, 230)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (134, 150)) ('caused by', 'Reg', (152, 161)) ('paragangliomas', 'Phenotype', 'HP:0002668', (119, 133)) ('autosomal dominant disorders', 'Disease', 'MESH:D030342', (55, 83)) ('paraganglioma', 'Phenotype', 'HP:0002668', (119, 132)) ('Familial paraganglioma syndromes', 'Disease', (0, 32)) ('succinate dehydrogenase', 'Gene', '6390', (202, 225)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (119, 151)) ('paragangliomas/pheochromocytomas', 'Disease', (119, 151)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (134, 151)) ('mutations', 'Var', (162, 171)) ('SDH', 'Gene', '6390', (227, 230)) ('autosomal dominant disorders', 'Disease', (55, 83)) ('glioma', 'Phenotype', 'HP:0009733', (16, 22)) ('paraganglioma', 'Phenotype', 'HP:0002668', (9, 22)) 119714 24899893 In general, inactivating mutations in one of the SDHx genes leads to accumulation of succinate and formation of reactive oxygen species, stabilizing HIFalpha and activating hypoxia-dependent pathways. ('succinate', 'MPA', (85, 94)) ('formation of reactive oxygen species', 'MPA', (99, 135)) ('stabilizing', 'PosReg', (137, 148)) ('reactive oxygen species', 'Chemical', 'MESH:D017382', (112, 135)) ('accumulation', 'PosReg', (69, 81)) ('activating', 'PosReg', (162, 172)) ('inactivating mutations', 'Var', (12, 34)) ('HIFalpha', 'MPA', (149, 157)) ('SDHx', 'Chemical', '-', (49, 53)) ('hypoxia', 'Disease', 'MESH:D000860', (173, 180)) ('succinate', 'Chemical', 'MESH:D019802', (85, 94)) ('SDHx', 'Gene', (49, 53)) ('hypoxia', 'Disease', (173, 180)) 119715 24899893 Four PGL syndromes have been described: types 1, 2, 3, and 4, caused by mutations in the SDHD, SDHAF2 (responsible for the flavination of subunit A), SDHC, and SDHB, respectively. ('mutations', 'Var', (72, 81)) ('SDHC', 'Gene', (150, 154)) ('SDHB', 'Gene', '6390', (160, 164)) ('SDHB', 'Gene', (160, 164)) ('SDHC', 'Gene', '6391', (150, 154)) ('PGL syndromes', 'Disease', (5, 18)) ('SDHD', 'Gene', '6392', (89, 93)) ('caused by', 'Reg', (62, 71)) ('SDHD', 'Gene', (89, 93)) ('SDHAF2', 'Gene', (95, 101)) ('SDHAF2', 'Gene', '54949', (95, 101)) 119717 24899893 Particularly for SDHB immunohistochemistry, a negative staining is more commonly found associated with SDHB mutation, whereas a weak diffuse staining often occurs with SDHD mutation. ('SDHB', 'Gene', (103, 107)) ('SDHD', 'Gene', '6392', (168, 172)) ('SDHB', 'Gene', '6390', (17, 21)) ('mutation', 'Var', (108, 116)) ('staining', 'MPA', (55, 63)) ('SDHB', 'Gene', '6390', (103, 107)) ('SDHB', 'Gene', (17, 21)) ('negative', 'NegReg', (46, 54)) ('SDHD', 'Gene', (168, 172)) 119720 24899893 PGL 1 syndrome is caused by mutations in SDHD gene, which are inherited in an autosomal dominant fashion with a predominant paternal transmission, suggesting a maternal imprinting of this gene. ('SDHD', 'Gene', '6392', (41, 45)) ('PGL 1 syndrome', 'Disease', (0, 14)) ('SDHD', 'Gene', (41, 45)) ('caused by', 'Reg', (18, 27)) ('mutations', 'Var', (28, 37)) 119721 24899893 A three-hit model has been hypothesized requiring a SDHD mutation, loss or mutation of the wild-type SDHD allele, and loss of a further imprinted (paternally silenced and maternally active) tumor suppressor gene from chromosome 11. ('mutation', 'Var', (57, 65)) ('SDHD', 'Gene', (101, 105)) ('SDHD', 'Gene', '6392', (101, 105)) ('tumor', 'Disease', 'MESH:D009369', (190, 195)) ('SDHD', 'Gene', '6392', (52, 56)) ('tumor', 'Phenotype', 'HP:0002664', (190, 195)) ('mutation', 'Var', (75, 83)) ('loss', 'NegReg', (118, 122)) ('loss', 'NegReg', (67, 71)) ('tumor', 'Disease', (190, 195)) ('SDHD', 'Gene', (52, 56)) 119723 24899893 have shown that among 34 patients with mutations in SDHD gene, 79% had head and neck paraganglioma, 53% had pheochromocytoma, and 39% thoracic/abdominal paraganglioma, whereas 74% of the patients presented with multiple tumors. ('pheochromocytoma', 'Disease', 'MESH:D010673', (108, 124)) ('glioma', 'Phenotype', 'HP:0009733', (92, 98)) ('pheochromocytoma', 'Disease', (108, 124)) ('neck paraganglioma', 'Disease', (80, 98)) ('patients', 'Species', '9606', (187, 195)) ('abdominal paraganglioma', 'Disease', (143, 166)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (108, 124)) ('tumors', 'Phenotype', 'HP:0002664', (220, 226)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (71, 98)) ('SDHD', 'Gene', (52, 56)) ('mutations', 'Var', (39, 48)) ('multiple tumors', 'Disease', 'MESH:D009369', (211, 226)) ('neck paraganglioma', 'Disease', 'MESH:D010235', (80, 98)) ('paraganglioma', 'Phenotype', 'HP:0002668', (85, 98)) ('tumor', 'Phenotype', 'HP:0002664', (220, 225)) ('patients', 'Species', '9606', (25, 33)) ('paraganglioma', 'Phenotype', 'HP:0002668', (153, 166)) ('SDHD', 'Gene', '6392', (52, 56)) ('multiple tumors', 'Disease', (211, 226)) ('abdominal paraganglioma', 'Disease', 'MESH:D010235', (143, 166)) ('glioma', 'Phenotype', 'HP:0009733', (160, 166)) 119726 24899893 Several different mutations have been described in exons 2-4 of SDHD, mainly nonsense, missense, and frameshift, but its relation with the phenotypic expression of the disease is still unclear. ('missense', 'Var', (87, 95)) ('frameshift', 'Var', (101, 111)) ('SDHD', 'Gene', (64, 68)) ('SDHD', 'Gene', '6392', (64, 68)) ('nonsense', 'Var', (77, 85)) 119728 24899893 It happens as a consequence of mutations in SDHAF2 gene (also known as SDH5) that encodes for a succinate dehydrogenase complex assembly factor 2 (SDHAF2), which is responsible for the flavination of SDHA enabling SDH complex activity. ('SDH', 'Gene', (44, 47)) ('SDHAF2', 'Gene', '54949', (147, 153)) ('SDHAF2', 'Gene', (147, 153)) ('SDH', 'Gene', (147, 150)) ('SDH', 'Gene', '6390', (71, 74)) ('SDH', 'Gene', '6390', (200, 203)) ('SDHA', 'Gene', (200, 204)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', (96, 145)) ('SDH5', 'Gene', (71, 75)) ('SDHA', 'Gene', '6389', (200, 204)) ('SDH', 'Gene', '6390', (214, 217)) ('SDH', 'Gene', (200, 203)) ('SDH', 'Gene', (71, 74)) ('mutations', 'Var', (31, 40)) ('SDH', 'Gene', '6390', (44, 47)) ('SDH5', 'Gene', '54949', (71, 75)) ('SDHA', 'Gene', (44, 48)) ('SDH', 'Gene', '6390', (147, 150)) ('SDH', 'Gene', (214, 217)) ('SDHA', 'Gene', (147, 151)) ('SDHA', 'Gene', '6389', (44, 48)) ('SDHA', 'Gene', '6389', (147, 151)) ('SDHAF2', 'Gene', (44, 50)) ('succinate dehydrogenase complex assembly factor 2', 'Gene', '54949', (96, 145)) ('SDHAF2', 'Gene', '54949', (44, 50)) 119730 24899893 Among the 16 mutations carriers of the largest branch of the Dutch family, considered as at-risk patients, 11 patients had head and neck tumors, out of which 10 had multiple tumors (91%). ('neck tumors', 'Disease', 'MESH:D006258', (132, 143)) ('tumors', 'Phenotype', 'HP:0002664', (137, 143)) ('head and neck tumors', 'Phenotype', 'HP:0012288', (123, 143)) ('multiple tumors', 'Disease', (165, 180)) ('neck tumors', 'Disease', (132, 143)) ('multiple tumors', 'Disease', 'MESH:D009369', (165, 180)) ('tumor', 'Phenotype', 'HP:0002664', (137, 142)) ('tumor', 'Phenotype', 'HP:0002664', (174, 179)) ('mutations', 'Var', (13, 22)) ('patients', 'Species', '9606', (110, 118)) ('tumors', 'Phenotype', 'HP:0002664', (174, 180)) ('patients', 'Species', '9606', (97, 105)) 119731 24899893 The scarcity of SDHAF2 mutations was reinforced by the failure to document mutations in this gene among 315 patients with paraganglioma and without mutations in the SDHD, SDHC, or SDHB genes. ('glioma', 'Phenotype', 'HP:0009733', (129, 135)) ('paraganglioma', 'Phenotype', 'HP:0002668', (122, 135)) ('SDHC', 'Gene', (171, 175)) ('SDHB', 'Gene', (180, 184)) ('paraganglioma', 'Disease', (122, 135)) ('SDHC', 'Gene', '6391', (171, 175)) ('mutations', 'Var', (23, 32)) ('SDHAF2', 'Gene', (16, 22)) ('SDHD', 'Gene', (165, 169)) ('mutations', 'Var', (75, 84)) ('SDHD', 'Gene', '6392', (165, 169)) ('SDHAF2', 'Gene', '54949', (16, 22)) ('patients', 'Species', '9606', (108, 116)) ('paraganglioma', 'Disease', 'MESH:D010235', (122, 135)) ('SDHB', 'Gene', '6390', (180, 184)) 119732 24899893 Nonetheless, it is justified to screen for SDHAF2 mutations in young patients with isolated head and neck paragangliomas or in individuals with familial antecedents who are negative for other risk genes. ('SDHAF2', 'Gene', (43, 49)) ('glioma', 'Phenotype', 'HP:0009733', (113, 119)) ('head and neck paragangliomas', 'Phenotype', 'HP:0002864', (92, 120)) ('mutations', 'Var', (50, 59)) ('screen', 'Reg', (32, 38)) ('neck paragangliomas', 'Disease', 'MESH:D010235', (101, 120)) ('head and neck paraganglioma', 'Phenotype', 'HP:0002864', (92, 119)) ('SDHAF2', 'Gene', '54949', (43, 49)) ('patients', 'Species', '9606', (69, 77)) ('neck paragangliomas', 'Disease', (101, 120)) ('paraganglioma', 'Phenotype', 'HP:0002668', (106, 119)) ('paragangliomas', 'Phenotype', 'HP:0002668', (106, 120)) 119733 24899893 Mutations in the SDHC gene are causative for familial PGL syndrome 3, which has an autosomal dominant mode of transmission without a parent-of-origin effect. ('familial PGL syndrome', 'Disease', 'MESH:D010235', (45, 66)) ('SDHC', 'Gene', (17, 21)) ('SDHC', 'Gene', '6391', (17, 21)) ('causative', 'Reg', (31, 40)) ('Mutations', 'Var', (0, 9)) ('familial PGL syndrome', 'Disease', (45, 66)) 119735 24899893 About 4% of paraganglioma patients carry mutations in the SDHC gene. ('mutations', 'Var', (41, 50)) ('paraganglioma', 'Phenotype', 'HP:0002668', (12, 25)) ('paraganglioma', 'Disease', (12, 25)) ('SDHC', 'Gene', (58, 62)) ('patients', 'Species', '9606', (26, 34)) ('paraganglioma', 'Disease', 'MESH:D010235', (12, 25)) ('SDHC', 'Gene', '6391', (58, 62)) ('glioma', 'Phenotype', 'HP:0009733', (19, 25)) 119736 24899893 Different types of mutations (missense, nonsense, splicing, deletions, and insertions) encompassing the whole SDHC gene have been found. ('splicing', 'MPA', (50, 58)) ('deletions', 'Var', (60, 69)) ('nonsense', 'Var', (40, 48)) ('SDHC', 'Gene', (110, 114)) ('SDHC', 'Gene', '6391', (110, 114)) ('insertions', 'Var', (75, 85)) 119741 24899893 Germline mutations in SDHB gene, which encodes for the iron sulfur subunit of the SDH complex (subunit B), are responsible for PGL 4 familial syndrome. ('responsible', 'Reg', (111, 122)) ('iron sulfur', 'Chemical', '-', (55, 66)) ('SDH', 'Gene', (82, 85)) ('SDHB', 'Gene', '6390', (22, 26)) ('PGL 4', 'Gene', (127, 132)) ('SDHB', 'Gene', (22, 26)) ('Germline', 'Var', (0, 8)) ('SDH', 'Gene', '6390', (22, 25)) ('familial syndrome', 'Disease', (133, 150)) ('PGL 4', 'Gene', '6390', (127, 132)) ('SDH', 'Gene', '6390', (82, 85)) ('SDH', 'Gene', (22, 25)) ('familial syndrome', 'Disease', 'MESH:D009386', (133, 150)) 119742 24899893 Functional assays have shown that these mutations lead to stabilization of HIF1alpha, causing overexpression of hypoxia-induced angiogenic pathway genes, such as VEGF (vascular endothelial growth factor) and EPAS1 (endothelial PAS domain protein 1), providing therefore support for tumor growth. ('overexpression', 'PosReg', (94, 108)) ('HIF1alpha', 'Gene', (75, 84)) ('EPAS1', 'Gene', (208, 213)) ('VEGF', 'Gene', (162, 166)) ('tumor', 'Phenotype', 'HP:0002664', (282, 287)) ('hypoxia', 'Disease', (112, 119)) ('hypoxia', 'Disease', 'MESH:D000860', (112, 119)) ('tumor', 'Disease', (282, 287)) ('vascular endothelial growth factor', 'Gene', (168, 202)) ('endothelial PAS domain protein 1', 'Gene', (215, 247)) ('HIF1alpha', 'Gene', '3091', (75, 84)) ('VEGF', 'Gene', '7422', (162, 166)) ('mutations', 'Var', (40, 49)) ('endothelial PAS domain protein 1', 'Gene', '2034', (215, 247)) ('vascular endothelial growth factor', 'Gene', '7422', (168, 202)) ('stabilization', 'MPA', (58, 71)) ('EPAS1', 'Gene', '2034', (208, 213)) ('tumor', 'Disease', 'MESH:D009369', (282, 287)) 119743 24899893 Loss of heterozygosity has been shown to occur as a consequence of SDHB mutations. ('Loss', 'NegReg', (0, 4)) ('mutations', 'Var', (72, 81)) ('SDHB', 'Gene', (67, 71)) ('SDHB', 'Gene', '6390', (67, 71)) 119744 24899893 Of interest, mutations in SDHB gene have also been associated with an increased susceptibility to develop other neoplasms, namely, renal cell carcinoma, gastrointestinal stromal tumors, papillary thyroid cancer, and neuroblastoma. ('SDHB', 'Gene', (26, 30)) ('neuroblastoma', 'Disease', 'MESH:D009447', (216, 229)) ('neoplasms', 'Disease', (112, 121)) ('carcinoma', 'Phenotype', 'HP:0030731', (142, 151)) ('renal cell carcinoma', 'Disease', (131, 151)) ('papillary thyroid cancer', 'Phenotype', 'HP:0002895', (186, 210)) ('renal cell carcinoma', 'Phenotype', 'HP:0005584', (131, 151)) ('gastrointestinal stromal tumors', 'Disease', (153, 184)) ('papillary thyroid cancer', 'Disease', 'MESH:D000077273', (186, 210)) ('thyroid cancer', 'Phenotype', 'HP:0002890', (196, 210)) ('tumors', 'Phenotype', 'HP:0002664', (178, 184)) ('neoplasms', 'Phenotype', 'HP:0002664', (112, 121)) ('cancer', 'Phenotype', 'HP:0002664', (204, 210)) ('mutations', 'Var', (13, 22)) ('tumor', 'Phenotype', 'HP:0002664', (178, 183)) ('SDHB', 'Gene', '6390', (26, 30)) ('associated', 'Reg', (51, 61)) ('renal cell carcinoma', 'Disease', 'MESH:C538614', (131, 151)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (153, 184)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (153, 184)) ('neoplasms', 'Disease', 'MESH:D009369', (112, 121)) ('neuroblastoma', 'Disease', (216, 229)) ('papillary thyroid cancer', 'Disease', (186, 210)) ('neuroblastoma', 'Phenotype', 'HP:0003006', (216, 229)) 119745 24899893 A wide spectrum of SDHB mutations have been found associated with PGL 4, namely, missense, frameshift, splicing, nonsense, and large deletions. ('large deletions', 'Var', (127, 142)) ('missense', 'Var', (81, 89)) ('SDHB', 'Gene', '6390', (19, 23)) ('nonsense', 'Var', (113, 121)) ('splicing', 'MPA', (103, 111)) ('frameshift', 'Var', (91, 101)) ('PGL 4', 'Gene', (66, 71)) ('SDHB', 'Gene', (19, 23)) ('mutations', 'Var', (24, 33)) ('associated', 'Reg', (50, 60)) ('PGL 4', 'Gene', '6390', (66, 71)) 119747 24899893 Since mutations in SDHB gene are the most frequent cause of metastatic paraganglioma tumors, it has consistently been proposed that all patients presenting with malignant paraganglioma/pheochromocytoma should be tested for SDHB gene mutations. ('malignant paraganglioma/pheochromocytoma', 'Disease', (161, 201)) ('paraganglioma', 'Phenotype', 'HP:0002668', (71, 84)) ('SDHB', 'Gene', (223, 227)) ('tumors', 'Phenotype', 'HP:0002664', (85, 91)) ('glioma', 'Phenotype', 'HP:0009733', (78, 84)) ('paraganglioma tumors', 'Disease', (71, 91)) ('tested', 'Reg', (212, 218)) ('tumor', 'Phenotype', 'HP:0002664', (85, 90)) ('paraganglioma tumors', 'Disease', 'MESH:D010235', (71, 91)) ('mutations', 'Var', (6, 15)) ('paraganglioma', 'Phenotype', 'HP:0002668', (171, 184)) ('SDHB', 'Gene', '6390', (19, 23)) ('glioma', 'Phenotype', 'HP:0009733', (178, 184)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (185, 201)) ('malignant paraganglioma/pheochromocytoma', 'Disease', 'MESH:D010673', (161, 201)) ('SDHB', 'Gene', (19, 23)) ('patients', 'Species', '9606', (136, 144)) ('SDHB', 'Gene', '6390', (223, 227)) ('cause', 'Reg', (51, 56)) 119748 24899893 The long-sought link between SDHA gene and paraganglioma development was only unveiled in 2010, when a patient with an extra-adrenal paraganglioma was found to have an SDHA missense mutation. ('extra-adrenal paraganglioma', 'Disease', 'MESH:D010236', (119, 146)) ('paraganglioma', 'Disease', (43, 56)) ('glioma', 'Phenotype', 'HP:0009733', (140, 146)) ('paraganglioma', 'Disease', (133, 146)) ('SDHA', 'Gene', (168, 172)) ('SDHA', 'Gene', '6389', (29, 33)) ('paraganglioma', 'Disease', 'MESH:D010235', (43, 56)) ('paraganglioma', 'Disease', 'MESH:D010235', (133, 146)) ('patient', 'Species', '9606', (103, 110)) ('missense mutation', 'Var', (173, 190)) ('SDHA', 'Gene', (29, 33)) ('extra-adrenal paraganglioma', 'Disease', (119, 146)) ('glioma', 'Phenotype', 'HP:0009733', (50, 56)) ('paraganglioma', 'Phenotype', 'HP:0002668', (43, 56)) ('paraganglioma', 'Phenotype', 'HP:0002668', (133, 146)) ('SDHA', 'Gene', '6389', (168, 172)) 119752 24899893 Recently, SDHA gene mutations have also been implicated in the development of gastrointestinal stromal tumors. ('tumor', 'Phenotype', 'HP:0002664', (103, 108)) ('gastrointestinal stromal tumors', 'Disease', 'MESH:D046152', (78, 109)) ('SDHA', 'Gene', (10, 14)) ('tumors', 'Phenotype', 'HP:0002664', (103, 109)) ('gastrointestinal stromal tumors', 'Phenotype', 'HP:0100723', (78, 109)) ('SDHA', 'Gene', '6389', (10, 14)) ('gastrointestinal stromal tumors', 'Disease', (78, 109)) ('implicated', 'Reg', (45, 55)) ('mutations', 'Var', (20, 29)) 119755 24899893 Mutations in this gene are inherited in an autosomal dominant fashion and induce tumor development by enhancing the kinase-dependent signaling pathways, similarly to mutated RET and NF1 genes. ('induce', 'PosReg', (74, 80)) ('NF1', 'Gene', '4763', (182, 185)) ('enhancing', 'PosReg', (102, 111)) ('RET', 'Gene', (174, 177)) ('kinase-dependent signaling pathways', 'Pathway', (116, 151)) ('tumor', 'Disease', 'MESH:D009369', (81, 86)) ('Mutations', 'Var', (0, 9)) ('NF1', 'Gene', (182, 185)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('RET', 'Gene', '5979', (174, 177)) ('tumor', 'Disease', (81, 86)) 119758 24899893 The prevalence of TMEM127 mutations in patients with paraganglioma/pheochromocytoma varies between 0.9 and 2%. ('patients', 'Species', '9606', (39, 47)) ('TMEM127', 'Gene', (18, 25)) ('TMEM127', 'Gene', '55654', (18, 25)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (67, 83)) ('paraganglioma/pheochromocytoma', 'Disease', 'MESH:D010673', (53, 83)) ('mutations', 'Var', (26, 35)) ('glioma', 'Phenotype', 'HP:0009733', (60, 66)) ('paraganglioma', 'Phenotype', 'HP:0002668', (53, 66)) ('paraganglioma/pheochromocytoma', 'Disease', (53, 83)) 119759 24899893 Different missense, frameshift, or nonsense TMEM127 mutations have been found across the three exons of the gene. ('TMEM127', 'Gene', '55654', (44, 51)) ('frameshift', 'Var', (20, 30)) ('missense', 'Var', (10, 18)) ('TMEM127', 'Gene', (44, 51)) 119760 24899893 identified mutations in MAX gene as responsible for the development of bilateral pheochromocytoma in eight index patients. ('bilateral pheochromocytoma', 'Disease', (71, 97)) ('responsible', 'Reg', (36, 47)) ('mutations', 'Var', (11, 20)) ('MAX', 'Gene', (24, 27)) ('patients', 'Species', '9606', (113, 121)) ('MAX', 'Gene', '4149', (24, 27)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (81, 97)) ('bilateral pheochromocytoma', 'Disease', 'MESH:D010673', (71, 97)) 119765 24899893 Both studies presented patients with metastatic disease, but further research is required to ascertain the risk of malignancy associated with MAX mutations. ('mutations', 'Var', (146, 155)) ('metastatic disease', 'Disease', (37, 55)) ('patients', 'Species', '9606', (23, 31)) ('MAX', 'Gene', (142, 145)) ('malignancy', 'Disease', 'MESH:D009369', (115, 125)) ('MAX', 'Gene', '4149', (142, 145)) ('metastatic disease', 'Disease', 'MESH:C538445', (37, 55)) ('malignancy', 'Disease', (115, 125)) 119768 24899893 Mutations in MAX gene have a paternal mode of transmission and are responsible for the loss of the wild type allele with consequent abrogation of protein expression. ('MAX', 'Gene', '4149', (13, 16)) ('abrogation', 'NegReg', (132, 142)) ('Mutations', 'Var', (0, 9)) ('protein expression', 'MPA', (146, 164)) ('MAX', 'Gene', (13, 16)) 119772 24899893 Mutations in VHL and SDHx genes have been shown to induce pseudohypoxic states that induce the development of paragangliomas/pheochromocytomas. ('pheochromocytomas', 'Phenotype', 'HP:0002666', (125, 142)) ('paragangliomas/pheochromocytomas', 'Disease', (110, 142)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (125, 141)) ('glioma', 'Phenotype', 'HP:0009733', (117, 123)) ('SDHx', 'Chemical', '-', (21, 25)) ('pseudohypoxic states', 'MPA', (58, 78)) ('induce', 'Reg', (51, 57)) ('SDHx', 'Gene', (21, 25)) ('VHL', 'Gene', (13, 16)) ('Mutations', 'Var', (0, 9)) ('induce', 'Reg', (84, 90)) ('paragangliomas', 'Phenotype', 'HP:0002668', (110, 124)) ('VHL', 'Gene', '7428', (13, 16)) ('paraganglioma', 'Phenotype', 'HP:0002668', (110, 123)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (110, 142)) 119773 24899893 described two somatic mutations in the gene encoding of the hypoxia-inducible factor 2alpha (HIF2A) in two patients with polycythemia and multiple paragangliomas (one of the patients also presented with somatostatinomas). ('hypoxia-inducible factor 2alpha', 'Gene', (60, 91)) ('glioma', 'Phenotype', 'HP:0009733', (154, 160)) ('paraganglioma', 'Phenotype', 'HP:0002668', (147, 160)) ('somatostatinomas', 'Disease', (203, 219)) ('HIF2A', 'Gene', '2034', (93, 98)) ('paragangliomas', 'Phenotype', 'HP:0002668', (147, 161)) ('patients', 'Species', '9606', (174, 182)) ('mutations', 'Var', (22, 31)) ('hypoxia-inducible factor 2alpha', 'Gene', '2034', (60, 91)) ('polycythemia and multiple paragangliomas', 'Disease', 'MESH:D011086', (121, 161)) ('somatostatinomas', 'Disease', 'MESH:D013005', (203, 219)) ('patients', 'Species', '9606', (107, 115)) ('HIF2A', 'Gene', (93, 98)) ('polycythemia', 'Phenotype', 'HP:0001901', (121, 133)) 119774 24899893 Functional assays show that both mutations affected pVHL hydroxylation, impairing HIF2alpha degradation leading to an intact/increased transcriptional activity of genes downstream of HIF2alpha, such as VEGFA and erythropoietin. ('VEGFA', 'Gene', (202, 207)) ('impairing', 'NegReg', (72, 81)) ('affected', 'Reg', (43, 51)) ('HIF2alpha', 'Gene', (183, 192)) ('erythropoietin', 'Gene', '2056', (212, 226)) ('pVHL', 'Gene', '7428', (52, 56)) ('pVHL', 'Gene', (52, 56)) ('VEGFA', 'Gene', '7422', (202, 207)) ('mutations', 'Var', (33, 42)) ('intact/increased', 'PosReg', (118, 134)) ('HIF2alpha', 'Gene', (82, 91)) ('transcriptional activity', 'MPA', (135, 159)) ('degradation', 'MPA', (92, 103)) ('erythropoietin', 'Gene', (212, 226)) ('HIF2alpha', 'Gene', '2034', (183, 192)) ('HIF2alpha', 'Gene', '2034', (82, 91)) 119775 24899893 These findings were further corroborated by other recent studies that confirmed somatic HIF2A gain-of-function mutations as causative for the development of polycythemia and multiple paragangliomas/pheochromocytomas and somatostatinomas in patients, corresponding to a novel syndrome. ('mutations', 'Var', (111, 120)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (183, 215)) ('paragangliomas/pheochromocytomas', 'Disease', (183, 215)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (198, 215)) ('HIF2A', 'Gene', (88, 93)) ('polycythemia and multiple paragangliomas', 'Disease', 'MESH:D011086', (157, 197)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (198, 214)) ('polycythemia', 'Phenotype', 'HP:0001901', (157, 169)) ('patients', 'Species', '9606', (240, 248)) ('somatostatinomas', 'Disease', 'MESH:D013005', (220, 236)) ('glioma', 'Phenotype', 'HP:0009733', (190, 196)) ('HIF2A', 'Gene', '2034', (88, 93)) ('paragangliomas', 'Phenotype', 'HP:0002668', (183, 197)) ('paraganglioma', 'Phenotype', 'HP:0002668', (183, 196)) ('somatostatinomas', 'Disease', (220, 236)) ('gain-of-function', 'PosReg', (94, 110)) 119776 24899893 The occurrence of multiple tumors presenting the same somatic mutations without familial history suggests the occurrence of a de novo postzygotic event early in the embryogenesis. ('tumor', 'Phenotype', 'HP:0002664', (27, 32)) ('multiple tumors', 'Disease', 'MESH:D009369', (18, 33)) ('tumors', 'Phenotype', 'HP:0002664', (27, 33)) ('multiple tumors', 'Disease', (18, 33)) ('mutations', 'Var', (62, 71)) 119779 24899893 The association between EGLN proteins and paraganglioma development was first established by Ladroue et al., by reporting a patient presenting with erythrocytosis and recurrent abdominal paragangliomas who carried a germline mutation in the EGLN1 gene (formerly known as PHD2). ('EGLN1', 'Gene', '54583', (241, 246)) ('erythrocytosis', 'Phenotype', 'HP:0001901', (148, 162)) ('erythrocytosis', 'MPA', (148, 162)) ('EGLN1', 'Gene', (241, 246)) ('paraganglioma', 'Disease', (187, 200)) ('abdominal paragangliomas', 'Disease', 'MESH:D010235', (177, 201)) ('abdominal paragangliomas', 'Disease', (177, 201)) ('paraganglioma', 'Disease', 'MESH:D010235', (187, 200)) ('paraganglioma', 'Disease', (42, 55)) ('glioma', 'Phenotype', 'HP:0009733', (194, 200)) ('paraganglioma', 'Disease', 'MESH:D010235', (42, 55)) ('PHD2', 'Gene', (271, 275)) ('patient', 'Species', '9606', (124, 131)) ('paraganglioma', 'Phenotype', 'HP:0002668', (187, 200)) ('paragangliomas', 'Phenotype', 'HP:0002668', (187, 201)) ('paraganglioma', 'Phenotype', 'HP:0002668', (42, 55)) ('germline mutation', 'Var', (216, 233)) ('glioma', 'Phenotype', 'HP:0009733', (49, 55)) ('PHD2', 'Gene', '54583', (271, 275)) 119784 24899893 Regarding paragangliomas/pheochromocytomas, it is currently accepted that there are 2 distinct tumorigenesis clusters according to their transcriptional profile: a pseudohypoxic cluster (associated with mutations in VHL/SDHx/EGLN1 genes) and a kinase receptor-signaling cluster (associated with RET/NF1/TMEM127/MAX/KIF1B mutations). ('TMEM127', 'Gene', (303, 310)) ('associated', 'Reg', (279, 289)) ('paragangliomas', 'Phenotype', 'HP:0002668', (10, 24)) ('SDHx', 'Chemical', '-', (220, 224)) ('MAX', 'Gene', (311, 314)) ('tumor', 'Phenotype', 'HP:0002664', (95, 100)) ('RET', 'Gene', '5979', (295, 298)) ('NF1', 'Gene', '4763', (299, 302)) ('KIF1B', 'Gene', '23095', (315, 320)) ('TMEM127', 'Gene', '55654', (303, 310)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (10, 42)) ('NF1', 'Gene', (299, 302)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (25, 42)) ('paragangliomas/pheochromocytomas', 'Disease', (10, 42)) ('RET', 'Gene', (295, 298)) ('associated', 'Reg', (187, 197)) ('VHL', 'Gene', (216, 219)) ('MAX', 'Gene', '4149', (311, 314)) ('mutations', 'Var', (203, 212)) ('EGLN1', 'Gene', (225, 230)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (25, 41)) ('tumor', 'Disease', (95, 100)) ('KIF1B', 'Gene', (315, 320)) ('glioma', 'Phenotype', 'HP:0009733', (17, 23)) ('paraganglioma', 'Phenotype', 'HP:0002668', (10, 23)) ('EGLN1', 'Gene', '54583', (225, 230)) ('mutations', 'Var', (321, 330)) ('tumor', 'Disease', 'MESH:D009369', (95, 100)) ('pseudohypoxic cluster', 'MPA', (164, 185)) ('VHL', 'Gene', '7428', (216, 219)) 119785 24899893 Evidence for a novel link between the latter cluster and paraganglioma development has been provided by Crona et al., through the identification of somatic mutations in H-RAS gene in four male patients presenting with pheochromocytoma (3 patients) and paraganglioma (1 patient). ('glioma', 'Phenotype', 'HP:0009733', (64, 70)) ('paraganglioma', 'Disease', (252, 265)) ('glioma', 'Phenotype', 'HP:0009733', (259, 265)) ('paraganglioma', 'Disease', 'MESH:D010235', (252, 265)) ('patient', 'Species', '9606', (238, 245)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (218, 234)) ('patient', 'Species', '9606', (269, 276)) ('paraganglioma', 'Phenotype', 'HP:0002668', (252, 265)) ('paraganglioma', 'Disease', (57, 70)) ('patients', 'Species', '9606', (193, 201)) ('mutations', 'Var', (156, 165)) ('H-RAS', 'Gene', (169, 174)) ('pheochromocytoma', 'Disease', (218, 234)) ('paraganglioma', 'Disease', 'MESH:D010235', (57, 70)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (218, 234)) ('patients', 'Species', '9606', (238, 246)) ('H-RAS', 'Gene', '3265', (169, 174)) ('patient', 'Species', '9606', (193, 200)) ('paraganglioma', 'Phenotype', 'HP:0002668', (57, 70)) 119788 24899893 firstly associated two KIF1B missense mutations as causative of pheochromocytoma in two tumor samples. ('tumor', 'Disease', 'MESH:D009369', (88, 93)) ('pheochromocytoma', 'Disease', (64, 80)) ('causative', 'Reg', (51, 60)) ('tumor', 'Phenotype', 'HP:0002664', (88, 93)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (64, 80)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (64, 80)) ('KIF1B', 'Gene', (23, 28)) ('missense mutations', 'Var', (29, 47)) ('tumor', 'Disease', (88, 93)) ('KIF1B', 'Gene', '23095', (23, 28)) 119790 24899893 These loss of function mutations in KIF1Bbeta could therefore protect neuroblasts from apoptosis, leading to tumor development. ('KIF1B', 'Gene', '23095', (36, 41)) ('leading to', 'Reg', (98, 108)) ('loss of function', 'NegReg', (6, 22)) ('tumor', 'Disease', 'MESH:D009369', (109, 114)) ('mutations', 'Var', (23, 32)) ('tumor', 'Phenotype', 'HP:0002664', (109, 114)) ('KIF1B', 'Gene', (36, 41)) ('tumor', 'Disease', (109, 114)) 119791 24899893 This study was further extended to five relatives of a patient harboring a germline KIF1B mutation. ('patient', 'Species', '9606', (55, 62)) ('mutation', 'Var', (90, 98)) ('KIF1B', 'Gene', '23095', (84, 89)) ('KIF1B', 'Gene', (84, 89)) 119793 24899893 Transcriptional analysis of KIF1Bbeta mutant pheochromocytomas showed that these tumors are transcriptionally related to RET and NF1-associated tumors. ('tumors', 'Disease', (144, 150)) ('tumors', 'Disease', (81, 87)) ('RET', 'Gene', '5979', (121, 124)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (45, 61)) ('tumors', 'Disease', 'MESH:D009369', (81, 87)) ('pheochromocytomas', 'Disease', 'MESH:D010673', (45, 62)) ('tumors', 'Disease', 'MESH:D009369', (144, 150)) ('pheochromocytomas', 'Disease', (45, 62)) ('KIF1B', 'Gene', '23095', (28, 33)) ('RET', 'Gene', (121, 124)) ('mutant', 'Var', (38, 44)) ('NF1', 'Gene', '4763', (129, 132)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (45, 62)) ('tumors', 'Phenotype', 'HP:0002664', (81, 87)) ('tumors', 'Phenotype', 'HP:0002664', (144, 150)) ('KIF1B', 'Gene', (28, 33)) ('NF1', 'Gene', (129, 132)) ('tumor', 'Phenotype', 'HP:0002664', (81, 86)) ('tumor', 'Phenotype', 'HP:0002664', (144, 149)) 119795 24899893 It is currently accepted throughout the literature that about 35% of paraganglioma/pheochromocytoma cases are due to germline mutations in one of the formerly described genes. ('due', 'Reg', (110, 113)) ('paraganglioma', 'Phenotype', 'HP:0002668', (69, 82)) ('glioma', 'Phenotype', 'HP:0009733', (76, 82)) ('paraganglioma/pheochromocytoma', 'Disease', (69, 99)) ('paraganglioma/pheochromocytoma', 'Disease', 'MESH:D010673', (69, 99)) ('germline mutations', 'Var', (117, 135)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (83, 99)) 119800 24899893 The inherited syndromic forms caused by mutations in VHL, RET, and NF1 genes are associated with other malignant tumors. ('RET', 'Gene', '5979', (58, 61)) ('NF1', 'Gene', (67, 70)) ('malignant tumors', 'Disease', 'MESH:D018198', (103, 119)) ('NF1', 'Gene', '4763', (67, 70)) ('inherited syndromic forms', 'Disease', 'None', (4, 29)) ('inherited syndromic forms', 'Disease', (4, 29)) ('VHL', 'Gene', (53, 56)) ('RET', 'Gene', (58, 61)) ('mutations', 'Var', (40, 49)) ('VHL', 'Gene', '7428', (53, 56)) ('malignant tumors', 'Disease', (103, 119)) ('tumor', 'Phenotype', 'HP:0002664', (113, 118)) ('caused', 'Reg', (30, 36)) ('associated', 'Reg', (81, 91)) ('tumors', 'Phenotype', 'HP:0002664', (113, 119)) 119802 24899893 On the other hand, patients with germline mutations are more likely to have multiple and recurrent paragangliomas/pheochromocytomas, which requires a more close follow-up. ('germline mutations', 'Var', (33, 51)) ('paragangliomas', 'Phenotype', 'HP:0002668', (99, 113)) ('patients', 'Species', '9606', (19, 27)) ('glioma', 'Phenotype', 'HP:0009733', (106, 112)) ('paraganglioma', 'Phenotype', 'HP:0002668', (99, 112)) ('pheochromocytomas', 'Phenotype', 'HP:0002666', (114, 131)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (114, 130)) ('paragangliomas/pheochromocytomas', 'Disease', 'MESH:D010673', (99, 131)) ('paragangliomas/pheochromocytomas', 'Disease', (99, 131)) 119809 24899893 For instance, the presence of hemangioblastomas (suggestive of von Hippel-Lindau) or medullary thyroid carcinoma along with pheochromocytoma (suggestive of MEN 2A) strongly implies mutations in VHL or RET gene, respectively. ('MEN 2A', 'Gene', '5979', (156, 162)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (124, 140)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (95, 112)) ('pheochromocytoma', 'Disease', (124, 140)) ('hemangioblastomas', 'Disease', (30, 47)) ('RET', 'Gene', (201, 204)) ('carcinoma', 'Phenotype', 'HP:0030731', (103, 112)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (124, 140)) ('MEN 2A', 'Gene', (156, 162)) ('mutations', 'Var', (181, 190)) ('von Hippel-Lindau', 'Disease', (63, 80)) ('VHL', 'Gene', (194, 197)) ('hemangioblastomas', 'Disease', 'MESH:D018325', (30, 47)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (95, 112)) ('RET', 'Gene', '5979', (201, 204)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (85, 112)) ('VHL', 'Gene', '7428', (194, 197)) ('von Hippel-Lindau', 'Disease', 'MESH:D006623', (63, 80)) ('implies', 'Reg', (173, 180)) ('thyroid carcinoma', 'Disease', (95, 112)) 119810 24899893 The coexistence of pheochromocytoma with interscapular pruritic lesions strongly suggests a mutation in codon 634 of the RET gene. ('pheochromocytoma', 'Disease', (19, 35)) ('RET', 'Gene', '5979', (121, 124)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (19, 35)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (19, 35)) ('RET', 'Gene', (121, 124)) ('pruritic lesions', 'Disease', (55, 71)) ('pruritic lesions', 'Phenotype', 'HP:0000989', (55, 71)) ('pruritic lesions', 'Disease', 'MESH:D051437', (55, 71)) ('mutation in codon 634', 'Var', (92, 113)) 119814 24899893 Extra-adrenal sympathetic paragangliomas (abdominal or thoracic) are more frequently caused by SDHB, SDHD, and VHL mutations. ('paraganglioma', 'Phenotype', 'HP:0002668', (26, 39)) ('SDHD', 'Gene', (101, 105)) ('Extra-adrenal sympathetic paragangliomas', 'Disease', 'MESH:D010236', (0, 40)) ('SDHD', 'Gene', '6392', (101, 105)) ('mutations', 'Var', (115, 124)) ('VHL', 'Gene', (111, 114)) ('paragangliomas', 'Phenotype', 'HP:0002668', (26, 40)) ('VHL', 'Gene', '7428', (111, 114)) ('SDHB', 'Gene', '6390', (95, 99)) ('SDHB', 'Gene', (95, 99)) ('caused', 'Reg', (85, 91)) ('glioma', 'Phenotype', 'HP:0009733', (33, 39)) ('Extra-adrenal sympathetic paragangliomas', 'Disease', (0, 40)) 119815 24899893 Head and neck tumors are more frequently caused by SDHD (especially in presence of multiple tumors) and SDHB gene mutations and less often by VHL and SDHC gene mutations. ('SDHC', 'Gene', (150, 154)) ('mutations', 'Var', (114, 123)) ('multiple tumors', 'Disease', (83, 98)) ('tumor', 'Phenotype', 'HP:0002664', (14, 19)) ('tumors', 'Phenotype', 'HP:0002664', (92, 98)) ('VHL', 'Gene', '7428', (142, 145)) ('caused', 'Reg', (41, 47)) ('neck tumors', 'Disease', 'MESH:D006258', (9, 20)) ('Head and neck tumors', 'Phenotype', 'HP:0012288', (0, 20)) ('tumors', 'Phenotype', 'HP:0002664', (14, 20)) ('tumor', 'Phenotype', 'HP:0002664', (92, 97)) ('multiple tumors', 'Disease', 'MESH:D009369', (83, 98)) ('SDHC', 'Gene', '6391', (150, 154)) ('VHL', 'Gene', (142, 145)) ('SDHD', 'Gene', '6392', (51, 55)) ('SDHB', 'Gene', '6390', (104, 108)) ('neck tumors', 'Disease', (9, 20)) ('SDHD', 'Gene', (51, 55)) ('SDHB', 'Gene', (104, 108)) 119817 24899893 Malignant tumors have been strongly associated (>30%) with germline mutations in SDHB, so initial analysis should address this gene. ('tumor', 'Phenotype', 'HP:0002664', (10, 15)) ('Malignant tumors', 'Disease', (0, 16)) ('tumors', 'Phenotype', 'HP:0002664', (10, 16)) ('SDHB', 'Gene', '6390', (81, 85)) ('Malignant tumors', 'Disease', 'MESH:D018198', (0, 16)) ('SDHB', 'Gene', (81, 85)) ('associated', 'Reg', (36, 46)) ('germline mutations', 'Var', (59, 77)) 119819 24899893 For instance, in VHL disease-associated pheochromocytoma, codon 167 of VHL gene appears as a first target, since missense mutations in this codon are strongly associated with pheochromocytoma development. ('pheochromocytoma', 'Disease', (40, 56)) ('VHL', 'Gene', (71, 74)) ('VHL disease', 'Disease', 'MESH:D006623', (17, 28)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (40, 56)) ('VHL', 'Gene', '7428', (17, 20)) ('associated with', 'Reg', (159, 174)) ('VHL', 'Gene', '7428', (71, 74)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (40, 56)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (175, 191)) ('VHL', 'Gene', (17, 20)) ('pheochromocytoma', 'Disease', (175, 191)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (175, 191)) ('VHL disease', 'Disease', (17, 28)) ('missense mutations in', 'Var', (113, 134)) 119821 24899893 Large deletions account for about 10% of the cases of SDHx-related paragangliomas. ('SDHx', 'Chemical', '-', (54, 58)) ('SDHx-related', 'Gene', (54, 66)) ('paragangliomas', 'Disease', 'MESH:D010235', (67, 81)) ('paragangliomas', 'Disease', (67, 81)) ('Large deletions', 'Var', (0, 15)) ('glioma', 'Phenotype', 'HP:0009733', (74, 80)) ('paraganglioma', 'Phenotype', 'HP:0002668', (67, 80)) ('paragangliomas', 'Phenotype', 'HP:0002668', (67, 81)) 119823 24899893 In the specific cases of RET-associated pheochromocytoma, young relatives carriers of RET mutations may undergo prophylactic thyroidectomy to prevent the development of medullary thyroid carcinoma. ('RET', 'Gene', '5979', (86, 89)) ('RET', 'Gene', '5979', (25, 28)) ('mutations', 'Var', (90, 99)) ('pheochromocytoma', 'Disease', (40, 56)) ('medullary thyroid carcinoma', 'Phenotype', 'HP:0002865', (169, 196)) ('pheochromocytoma', 'Phenotype', 'HP:0002666', (40, 56)) ('carcinoma', 'Phenotype', 'HP:0030731', (187, 196)) ('RET', 'Gene', (25, 28)) ('thyroid carcinoma', 'Disease', 'MESH:D013964', (179, 196)) ('pheochromocytoma', 'Disease', 'MESH:D010673', (40, 56)) ('RET', 'Gene', (86, 89)) ('thyroid carcinoma', 'Phenotype', 'HP:0002890', (179, 196)) ('thyroid carcinoma', 'Disease', (179, 196)) 119824 24899893 On the other hand, due to the higher risk of malignancy in patients carrying SDHB gene mutations, a closer biochemical and imaging follow-up might be provided in order to prevent the development of metastatic disease. ('malignancy', 'Disease', 'MESH:D009369', (45, 55)) ('SDHB', 'Gene', '6390', (77, 81)) ('metastatic disease', 'Disease', 'MESH:C538445', (198, 216)) ('malignancy', 'Disease', (45, 55)) ('SDHB', 'Gene', (77, 81)) ('patients', 'Species', '9606', (59, 67)) ('mutations', 'Var', (87, 96)) ('metastatic disease', 'Disease', (198, 216)) 119829 24899893 These genes have been divided into two tumorigenesis clusters: a pseudohypoxic cluster (associated with mutations in VHL/SDHx/EGLN1/HIF2A genes) and a kinase receptor-signaling cluster (associated with RET/NF1/TMEM127/MAX/KIF1B gene mutations). ('TMEM127', 'Gene', '55654', (210, 217)) ('tumor', 'Phenotype', 'HP:0002664', (39, 44)) ('RET', 'Gene', (202, 205)) ('NF1', 'Gene', (206, 209)) ('HIF2A', 'Gene', '2034', (132, 137)) ('MAX', 'Gene', (218, 221)) ('pseudohypoxic cluster', 'MPA', (65, 86)) ('VHL', 'Gene', (117, 120)) ('HIF2A', 'Gene', (132, 137)) ('mutations', 'Var', (104, 113)) ('EGLN1', 'Gene', '54583', (126, 131)) ('KIF1B', 'Gene', (222, 227)) ('VHL', 'Gene', '7428', (117, 120)) ('EGLN1', 'Gene', (126, 131)) ('associated', 'Reg', (186, 196)) ('tumor', 'Disease', (39, 44)) ('SDHx', 'Chemical', '-', (121, 125)) ('MAX', 'Gene', '4149', (218, 221)) ('RET', 'Gene', '5979', (202, 205)) ('TMEM127', 'Gene', (210, 217)) ('tumor', 'Disease', 'MESH:D009369', (39, 44)) ('associated', 'Reg', (88, 98)) ('NF1', 'Gene', '4763', (206, 209)) ('KIF1B', 'Gene', '23095', (222, 227)) 119830 24899893 Functional studies involving these genes and paraganglioma-associated mutations as well as gene expression profiles of tumor samples have greatly contributed to our understanding of tumorigenic pathways of paragangliomas. ('glioma', 'Phenotype', 'HP:0009733', (213, 219)) ('paraganglioma', 'Disease', 'MESH:D010235', (206, 219)) ('paraganglioma', 'Disease', (45, 58)) ('tumor', 'Phenotype', 'HP:0002664', (119, 124)) ('paraganglioma', 'Disease', 'MESH:D010235', (45, 58)) ('tumor', 'Phenotype', 'HP:0002664', (182, 187)) ('paragangliomas', 'Disease', 'MESH:D010235', (206, 220)) ('glioma', 'Phenotype', 'HP:0009733', (52, 58)) ('paragangliomas', 'Phenotype', 'HP:0002668', (206, 220)) ('paraganglioma', 'Phenotype', 'HP:0002668', (206, 219)) ('mutations', 'Var', (70, 79)) ('contributed', 'Reg', (146, 157)) ('paraganglioma', 'Phenotype', 'HP:0002668', (45, 58)) ('tumor', 'Disease', (119, 124)) ('tumor', 'Disease', (182, 187)) ('paragangliomas', 'Disease', (206, 220)) ('tumor', 'Disease', 'MESH:D009369', (119, 124)) ('tumor', 'Disease', 'MESH:D009369', (182, 187)) ('paraganglioma', 'Disease', (206, 219)) 119940 20540918 Ablation may also play an important palliative role by debulking to decrease the overall catecholamine burden. ('catecholamine', 'Chemical', 'MESH:D002395', (89, 102)) ('decrease', 'NegReg', (68, 76)) ('Ablation', 'Var', (0, 8)) ('debulking', 'Var', (55, 64)) ('catecholamine burden', 'MPA', (89, 109)) 119958 20540918 Thus, ablation of adrenal tumors has the propensity to result in the release of large amounts of these hormones into the bloodstream, resulting in acute hypertensive crisis and potentially even cardiac and cerebral ischemia or infarction. ('resulting in', 'Reg', (134, 146)) ('result in', 'Reg', (55, 64)) ('infarction', 'Disease', 'MESH:D007238', (227, 237)) ('cerebral ischemia', 'Disease', (206, 223)) ('adrenal tumors', 'Disease', (18, 32)) ('cerebral ischemia', 'Disease', 'MESH:D002545', (206, 223)) ('renal tumors', 'Phenotype', 'HP:0009726', (20, 32)) ('hypertensive crisis', 'Phenotype', 'HP:0100735', (153, 172)) ('infarction', 'Disease', (227, 237)) ('tumor', 'Phenotype', 'HP:0002664', (26, 31)) ('hypertensive', 'Disease', 'MESH:D006973', (153, 165)) ('adrenal tumors', 'Disease', 'MESH:D000310', (18, 32)) ('cardiac and', 'CPA', (194, 205)) ('hypertensive', 'Disease', (153, 165)) ('release of', 'MPA', (69, 79)) ('ablation', 'Var', (6, 14)) ('tumors', 'Phenotype', 'HP:0002664', (26, 32)) ('cerebral ischemia', 'Phenotype', 'HP:0002637', (206, 223)) 120030 20540918 Munver and colleagues have also described laparoscopic adrenal cryoablation of an aldosteronoma in a patient with bilateral adrenal hyperplasia. ('bilateral adrenal hyperplasia', 'Disease', 'MESH:D000312', (114, 143)) ('bilateral adrenal hyperplasia', 'Disease', (114, 143)) ('adrenal hyperplasia', 'Phenotype', 'HP:0008221', (124, 143)) ('patient', 'Species', '9606', (101, 108)) ('aldosteronoma', 'Disease', 'None', (82, 95)) ('cryoablation', 'Var', (63, 75)) ('aldosteronoma', 'Disease', (82, 95)) 120051 20540918 As has been described for renal ablation, communication with the anesthesiologist to coordinate breathing can also help avoid transgression of the pleura and enable movement of a target lesion off of an intervening rib. ('transgression', 'CPA', (126, 139)) ('communication', 'Var', (42, 55)) ('pleura', 'Disease', (147, 153)) ('pleura', 'Disease', 'MESH:D054363', (147, 153)) 120055 20540918 Hydrodissection is most useful in protecting the bowel and pancreas and may also facilitate protection of the lung, kidney or hemidiaphragm and chest wall (including intercostal nerves). ('bowel and pancreas', 'Disease', 'MESH:D010190', (49, 67)) ('Hydrodissection', 'Var', (0, 15)) ('kidney or hemidiaphragm', 'Disease', 'MESH:D065630', (116, 139)) ('facilitate', 'PosReg', (81, 91)) ('kidney or hemidiaphragm', 'Disease', (116, 139)) 120062 20540918 Damage to the adrenal gland can also result in adrenal insufficiency in certain patient populations, typically those with a history of prior nephrectomy with unilateral adrenalectomy. ('result in', 'Reg', (37, 46)) ('adrenal insufficiency', 'Disease', 'MESH:D000309', (47, 68)) ('adrenal insufficiency', 'Phenotype', 'HP:0000846', (47, 68)) ('Damage', 'Var', (0, 6)) ('adrenal insufficiency', 'Disease', (47, 68)) ('patient', 'Species', '9606', (80, 87)) 120087 20540918 Enhancement or enlargement on subsequent imaging after initial negative imaging is considered indicative of tumor recurrence, and patients should be counseled about additional treatments, if appropriate, including repeat ablation, surgery, chemotherapy or observation. ('tumor', 'Disease', 'MESH:D009369', (108, 113)) ('tumor', 'Phenotype', 'HP:0002664', (108, 113)) ('tumor', 'Disease', (108, 113)) ('patients', 'Species', '9606', (130, 138)) ('Enhancement', 'Var', (0, 11)) ('enlargement', 'PosReg', (15, 26))