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J Hum Genet. 2014 Sep;59(9):488-93. doi: 10.1038/jhg.2014.61. Epub 2014 Jul 31.

Germline mutation of Glu70Lys is highly frequent in Korean patients with von Hippel-Lindau (VHL) disease.

Author information

1
Department of Internal Medicine, Severance Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, Korea.
2
Division of Endocrinology and Metabolism, Ajou University School of Medicine, Suwon, Korea.
3
Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
4
Division of Clinical Genetics, Department of Pediatrics, Severance Children's Hospital, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.

Abstract

Von Hippel-Lindau (VHL) disease is an inherited tumor syndrome caused by germline mutations in the VHL tumor suppressor gene. It is characterized by hemangioblastoma in the central nervous system and retina, renal cell carcinoma, pancreatic tumor and cysts, and pheochromocytoma. In this study, we detected 26 germline mutations in the VHL gene of Korean patients, of which 1 was a novel mutation, c.417_418insT. We also integrated our data from this study with the published literature to identify 55 VHL germline mutations in Koreans, and identified a unique hotspot at codon 70. Nine unrelated patients (9/55, 16.4%) had the same amino-acid substitution at codon 70 (Glu70Lys) and showed VHL type 1 phenotypes. Although this mutation was shown to have a mild effect on VHL function, four of the nine patients (44.4%) subsequently developed multiple central nervous system hemangioblastomas or retinal hemangioblastoma. However, this hotspot has not been identified in Chinese or Japanese patients. This study provides information on the spectrum of VHL mutations in Korean VHL disease and contributes to a better understanding of VHL disease in terms of improvements in the clinical management of VHL families.

PMID:
25078357
DOI:
10.1038/jhg.2014.61
[Indexed for MEDLINE]
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