VHL Gene Mutation Analysis of a Chinese Family with Non-Syndromic Pheochromocytomas and Patients with Apparently Sporadic Pheochromocytoma

Zhang, Bin; Qian, Jing; Chang, De-Hui; Wang, Yang-Min; Zhou, Da-Hai; Qiao, Gou-Mei

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자료유형: 학술저널

저자정보: Zhang, Bin (Department of Urology, Lanzhou General Hospital of Lanzhou Command) Qian, Jing (Department of Urology, Gansu Provincial People's Hospital) Chang, De-Hui (Department of Urology, Lanzhou General Hospital of Lanzhou Command) Wang, Yang-Min (Department of Urology, Lanzhou General Hospital of Lanzhou Command) Zhou, Da-Hai (Department of Urology, PLA 401 Hospital) Qiao, Gou-Mei (Department of Urology, Lanzhou General Hospital of Lanzhou Command)

저널정보: 아시아태평양암예방학회 Asian Pacific journal of cancer prevention : APJCP Asian Pacific journal of cancer prevention : APJCP 제16권 제5호

발행연도: 2015.1

수록면: 1,977 - 1,980 (4page)

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Objective: The Von Hippel-Lindau syndrome (VHLD), an inherited neoplastic syndrome predisposing to central nervous system hemangioblastoma (CNS), pheochromocytoma (PCC), renal cell carcinoma(RCC), retinal hemangioma (RA) and renal cysts, is caused by mutations or deletions of the VHL tumor-suppressor gene. To assess VHL genotype-phenotype correlations with function of pVHL a gene mutation analysis of members in a Chinese family with non-syndromic PCCs and individuals with apparently sporadic pheochromocytoma (ASP) was performed. Materials and Methods: DNA samples of 20 members from the Chinese family with non-syndromic PCCs and 41 patients with ASP were analyzed by polymerase chain reaction and direct sequencing, confirmed by Taqman probe. Results: Three novel mutations (H125P, 623(^TTTGTtG) and R120T) were identified in the Chinese family and in 3 among 41 ASP patients. The mutations were all located in exon 2 of VHL gene encoding ${\beta}$-domain of pVHL. The tumor type in H125P carriers and R120T carriers was VHL type 2C. And 623(^TTTGTtG) carriers presented VHL type 2B or type 2C. Conclusions: VHL gene abnormalities were identified in the Chinese family with non-syndromic PCCs and patients with APS, resulting in dysfunction of pVHL. H125P and R120T could be associated with VHL type 2C, while 623(^TTTGTtG) might be linked with VHL type 2B or type 2C. Not only is the genetic analysis helpful for early diagnosis and treatment of patients with VHLD, it is also benefitial for research intoVHLD pathogenesis.

#von Hippel-Lindau syndrome #gene #mutation #pheochromocytomas #familial #sporadic

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