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Clinical presentation and mutation analysis of VHL disease in a large Chinese family

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机构: [1]Capital Med Univ, Beijing Tian Tan Hosp, Dept Neurosurg, Beijing, Peoples R China; [2]China Natl Clin Res Ctr Neurol Dis NCRC ND, Beijing, Peoples R China; [3]Beijing Key Lab Brain Tumor, Beijing, Peoples R China
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关键词: Von Hippel-Lindau disease Hemangioblastoma c 433C > T mutation p Q145X

摘要:
Von Hippel-Lindau (VHL) disease is an autosomal dominantly inherited neoplastic disorder characterized by marked phenotypic variability and age-dependent penetrance. This disease is caused by germline mutations in the VHL tumor suppressor gene. Systematic physical examinations, imaging assessments and molecular genetic tests for the VHL gene were performed in a large Chinese VHL family. The examined Chinese VHL family, which has 25 members from four generations, including 7 diagnosed VHL patients and 2 asymptomatic mutation carriers. The average ages of first onset for generations I, II, and III were 37, 30 and 16, respectively. The male:female ratio among VHL patients was 6:1. Molecular genetic investigations detected the c.433C > T [p.Q145X] nonsense mutation in the VHL gene. Molecular modeling of the VHL-ElonginC- ElonginB-HIF-1 alpha complex predicted that the p.Q145X mutation markedly alters the L7 loop structure of the beta-domain of the VHL protein (pVHL), destabilizes the VHL-HIF-1 alpha complex, and induces the truncation of pVHL. We speculate that the p.Q145X nonsense mutation leads to relatively obvious familial aggregation. This mutation causes the type I phenotype of VHL disease and is associated with a high risk of retinal and central nervous system (CNS) hemangioblastomas (HGBs) and visceral cysts, but a low risk of renal cell carcinoma. Moreover, within a VHL family, the average ages of first onset became younger in successive generations, and the CNS HGBs are more likely to occur in male patients.

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出版当年[2014]版:
大类 | 3 区 医学
小类 | 3 区 临床神经病学 3 区 肿瘤学
最新[2023]版:
大类 | 2 区 医学
小类 | 3 区 临床神经病学 3 区 肿瘤学
JCR分区:
出版当年[2013]版:
Q2 ONCOLOGY Q2 CLINICAL NEUROLOGY
最新[2023]版:
Q2 CLINICAL NEUROLOGY Q2 ONCOLOGY

影响因子: 最新[2023版] 最新五年平均 出版当年[2013版] 出版当年五年平均 出版前一年[2012版] 出版后一年[2014版]

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第一作者机构: [1]Capital Med Univ, Beijing Tian Tan Hosp, Dept Neurosurg, Beijing, Peoples R China; [2]China Natl Clin Res Ctr Neurol Dis NCRC ND, Beijing, Peoples R China; [3]Beijing Key Lab Brain Tumor, Beijing, Peoples R China
通讯作者:
通讯机构: [1]Capital Med Univ, Beijing Tian Tan Hosp, Dept Neurosurg, Beijing, Peoples R China; [2]China Natl Clin Res Ctr Neurol Dis NCRC ND, Beijing, Peoples R China; [3]Beijing Key Lab Brain Tumor, Beijing, Peoples R China
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