Mutations in the breast cancer susceptibility genes BRCA1, BRCA2, and CHEK2 are known risk factors for female breast cancer. Mutations in BRCA1 and BRCA2 also are associated with male breast cancer (MBC). Similarly, it had been suggested in the original CHEK2 identification report that the CHEK2 1100delC mutation confers an increased risk for MBC. Here, we have evaluated the risk of CHEK2 1100delC for MBC by genotyping CHEK2 1100delC in 23 familial and 71 unselected Dutch MBC cases. None of the 23 familial MBC cases carried the CHEK2 1100delC mutation. In contrast, CHEK2 1100delC was present in 3 of the 71 (4.2%) unselected MBC cases, which was significantly more prevalent than the 1.1% Dutch population frequency assessed in 1,692 individuals (P = 0.05, OR = 4.1, 95% CI 1.2–14.3). Our data suggest that, in the Netherlands, CHEK2 1100delC is associated with an increased risk for MBC.
Cancer susceptibility CHEK2CHK2Male breast cancer
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Funding was provided by the Dutch Cancer Society, grant DDHK 2003-2862, and the Netherlands Genomics Initiative (NGI)/Netherlands Organization for Scientific Research (NOW).
Meijers-Heijboer H, van den Ouweland A, Klijn J et al (2002) Low-penetrance susceptibility to breast cancer due to CHEK2(*)1100delC in noncarriers of BRCA1 or BRCA2 mutations. Nat Genet 31:55–59. doi:10.1038/ng879PubMedCrossRefGoogle Scholar
Vahteristo P, Bartkova J, Eerola H et al (2002) A CHEK2 genetic variant contributing to a substantial fraction of familial breast cancer. Am J Hum Genet 71:432–438. doi:10.1086/341943PubMedCrossRefGoogle Scholar
Consortium CBCC-C (2004) CHEK2*1100delC and susceptibility to breast cancer: a collaborative analysis involving 10,860 breast cancer cases and 9,065 controls from 10 studies. Am J Hum Genet 74:1175–1182. doi:10.1086/421251CrossRefGoogle Scholar
Choi DH, Cho DY, Lee MH et al (2008) The CHEK2 1100delC mutation is not present in Korean patients with breast cancer cases tested for BRCA1 and BRCA2 mutation. Breast Cancer Res Treat. doi:10.1007/5105490079878z
Friedrichsen DM, Malone KE, Doody DR, Daling JR, Ostrander EA (2004) Frequency of CHEK2 mutations in a population based, case-control study of breast cancer in young women. Breast Cancer Res 6:R629–R635. doi:10.1186/bcr933PubMedCrossRefGoogle Scholar
Jekimovs CR, Chen X, Arnold J et al (2005) Low frequency of CHEK2 1100delC allele in Australian multiple-case breast cancer families: functional analysis in heterozygous individuals. Br J Cancer 92:784–790. doi:10.1038/sj.bjc.6602381PubMedCrossRefGoogle Scholar
Meijers-Heijboer H, Wijnen J, Vasen H et al (2003) The CHEK2 1100delC mutation identifies families with a hereditary breast and colorectal cancer phenotype. Am J Hum Genet 72:1308–1314. doi:10.1086/375121PubMedCrossRefGoogle Scholar