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Genome-wide linkage scan for atypical nevi in p16-Leiden melanoma families

  • Femke A. de Snoo*
  • , Jouke Jan Hottenga
  • , Elizabeth M. Gillanders
  • , Loudewijk A. Sandkuijl
  • , Mary Pat Jones
  • , Wilma Bergman
  • , Clasine van der Drift
  • , Inge van Leeuwen
  • , Lenny van Mourik
  • , Jeanet A.C. ter Huurne
  • , Rune R. Frants
  • , Rein Willemze
  • , Martijn H. Breuning
  • , Jeffrey M. Trent
  • , Nelleke A. Gruis
  • *Corresponding author for this work
  • Leiden University
  • Vrije Universiteit Amsterdam
  • National Institutes of Health
  • Translational Genomics Research Institute

Research output: Contribution to journalArticlepeer-review

Abstract

In most Dutch melanoma families, a founder deletion in the melanoma susceptibility gene CDKN2A (which encodes p16) is present. This founder deletion (p16-Leiden) accounts for a significant proportion of the increased melanoma risk. However, it does not account for the Atypical Nevus (AN) phenotype that segregates in both p16-Leiden carriers and non-carriers. The AN-affected p16-Leiden family members are therefore a unique valuable resource for unraveling the genetic etiology of the AN phenotype, which is considered both a risk factor and a precursor lesion for melanoma. In this study, we performed a genome-wide scan for linkage in four p16-Leiden melanoma pedigrees, classifying family members with five or more AN as affected. The strongest evidence for an atypical nevus susceptibility gene was mapped to chromosome band 7q21.3 (two-point LOD score=2.751), a region containing candidate gene CDK6.

Original languageEnglish
Pages (from-to)1135-1141
Number of pages7
JournalEuropean Journal of Human Genetics
Volume16
Issue number9
DOIs
Publication statusPublished - 2008
Externally publishedYes

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