Germline Mutations in the CDKN2B Tumor Suppressor Gene Predispose to Renal Cell Carcinoma.
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Wake, Naomi C
Ascher, David B
Pires, Douglas E V
Morris, Mark R.
Simpson, Michael A
Trembath, Richard C
Woodward, Emma R
Blundell, Tom L
Maher, Eamonn R
MetadataShow full item record
AbstractFamilial renal cell carcinoma (RCC) is genetically heterogeneous and may be caused by mutations in multiple genes, including VHL, MET, SDHB, FH, FLCN, PTEN, and BAP1. However, most individuals with inherited RCC do not have a detectable germline mutation. To identify novel inherited RCC genes, we undertook exome resequencing studies in a familial RCC kindred and identified a CDKN2B nonsense mutation that segregated with familial RCC status. Targeted resequencing of CDKN2B in individuals (n = 82) with features of inherited RCC then revealed three candidate CDKN2B missense mutations (p.Pro40Thr, p.Ala23Glu, and p.Asp86Asn). In silico analysis of the three-dimensional structures indicated that each missense substitution was likely pathogenic through reduced stability of the mutant or reduced affinity for cyclin-dependent kinases 4 and 6, and in vitro studies demonstrated that each of the mutations impaired CDKN2B-induced suppression of proliferation in an RCC cell line. These findings identify germline CDKN2B mutations as a novel cause of familial RCC.
CitationGermline Mutations in the CDKN2B Tumor Suppressor Gene Predispose to Renal Cell Carcinoma. 2015, 5 (7):723-9 Cancer Discov
PublisherAmerican Association for Cancer Research
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