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Open Access Highly Accessed Research article

Identification of 3 novel VHL germ-line mutations in Danish VHL patients

Mette Dandanell1, Lennart Friis-Hansen1, Lone Sunde23, Finn C Nielsen1 and Thomas v O Hansen1*

  • * Corresponding author: Thomas O Hansen tvoh@rh.dk

Author Affiliations

1 Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark

2 Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark

3 Department of Clinical Genetics, Aalborg Hospital, Aalborg, Denmark

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BMC Medical Genetics 2012, 13:54  doi:10.1186/1471-2350-13-54

Published: 16 July 2012

Abstract

Background

von Hippel-Lindau (VHL) disease is a hereditary cancer syndrome in which the patients develop retinal and central nervous system hemangioblastomas, pheochromocytomas and clear-cell renal tumors. The autosomal dominant disease is caused by mutations in the VHL gene.

Methods

VHL mutational analysis was carried out by sequencing of the coding sequence and by multiplex ligation-dependent probe amplification analysis. The functional consequence of the variants was investigated using in silico prediction tools.

Results

A total of 289 probands suspected of having VHL syndrome have been screened for mutations in the VHL gene. Twenty-six different VHL mutations were identified in 36 families including one in-frame duplication, two frame-shift mutations, four nonsense mutations, twelve missense mutations, three intronic mutations and four large genomic rearrangements. Three of these mutations (c.319ā€‰Cā€‰>ā€‰T, c.342_343dupGGT and c.520_521dupAA) were novel.

Conclusions

In this study we report the VHL germ-line mutations found in Danish families. We found three novel VHL mutations where two were classified as pathogenic and the latter was classified as a variant of unknown significance. Together, our findings contribute to the interpretation of the potential pathogenicity of VHL germ-line mutations.

Keywords:
von Hippel-Lindau disease; VHL; Germ-line mutations; Danish population