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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Screening of germline mutations in the CDK4, CDKN2C and TP53 genes in familial melanoma: a clinic-based population study.

Germline mutations within the CDKN2A gene, coding for the cyclin-dependent kinase inhibitor p16, have been detected by screening in 8% of Swedish families with an inheritance of cutaneous melanoma (FMM) and dysplastic nevus syndrome (DNS). Contrastingly, the closely related gene CDKN2B had no disease-related mutations in these families. A majority of Swedish families with hereditary melanoma predisposition thus lack germline mutations in these cell cycle G1 checkpoint-regulating genes. Additional genes with the potential to contribute to increased melanoma risk may code for related components of the cell cycle-regulating machinery. The gene for cyclin-dependent kinase 4, CDK4, has been found in mutated form in the germline from individuals belonging to 2 melanoma kindreds in the United States. The CDKN2C gene coding for the cyclin-dependent kinase inhibitor p18 is localized on 1p32, a region frequently involved in chromosomal changes in melanomas and other tumors. The TP53 suppressor gene, involved in cell cycle regulation and maintenance of genetic stability, is found mutated in the germline of patients with hereditary Li-Fraumeni syndrome, leading to early onset of several human cancers, including melanoma. The present investigation reports the results of screening the 100 Swedish melanoma families for germline mutations in the CDK4, CDKN2C and TP53 genes. No disease-related mutations were detected in the coding regions. A direct contribution of these genes to the hereditary risk for melanoma in members of Swedish melanoma kindreds therefore appears unlikely.[1]


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