Journal
FAMILIAL CANCER
Volume 15, Issue 1, Pages 139-144Publisher
SPRINGER
DOI: 10.1007/s10689-015-9841-9
Keywords
Melanoma; Familial; Genetic; TERT; Mutation
Categories
Funding
- Cancer Research UK [C588/A19167, C8216/A6129]
- NIH [CA83115]
- Dutch Cancer Society [UL 2012-5489]
- ERC Combat Cancer
- Wellcome Trust
- National Health and Medical Research Council of Australia
- CRUK grant [C8197/A16565]
- Isaac Newton Trust
- Division of Cancer Epidemiology and Genetics
- National Cancer Institute
- National Institutes of Health
- NATIONAL CANCER INSTITUTE [R01CA083115] Funding Source: NIH RePORTER
- Cancer Research UK [16565, 19167, 13031, 10589] Funding Source: researchfish
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Germline CDKN2A mutations occur in 40 % of 3-or-more case melanoma families while mutations of CDK4, BAP1, and genes involved in telomere function (ACD, TERF2IP, POT1), have also been implicated in melanomagenesis. Mutation of the promoter of the telomerase reverse transcriptase (TERT) gene (c.-57 T > G variant) has been reported in one family. We tested for the TERT promoter variant in 675 multicase families wild-type for the known high penetrance familial melanoma genes, 1863 UK population-based melanoma cases and 529 controls. Germline lymphocyte telomere length was estimated in carriers. The c.-57 T > G TERT promoter variant was identified in one 7-case family with multiple primaries and early age of onset (earliest, 15 years) but not among population cases or controls. One family member had multiple primary melanomas, basal cell carcinomas and a bladder tumour. The blood leukocyte telomere length of a carrier was similar to wild-type cases. We provide evidence confirming that a rare promoter variant of TERT (c.-57 T > G) is associated with high penetrance, early onset melanoma and potentially other cancers, and explains < 1 % of UK melanoma multicase families. The identification of POT1 and TERT germline mutations highlights the importance of telomere integrity in melanoma biology.
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