Abstract
Recently CHK2 was functionally linked to the p53 pathway, and mutations in these two genes seem to result in a similar Li–Fraumeni syndrome (LFS) or Li–Fraumeni-like syndrome (LFL) multi-cancer phenotype frequently including breast cancer. As CHK2 has been found to bind and regulate BRCA1, the product of one of the 2 known major susceptibility genes to hereditary breast cancer, it also more directly makes CHK2 a suitable candidate gene for hereditary predisposition to breast cancer. Here we have screened 79 Finnish hereditary breast cancer families for germline CHK2 alterations. Twenty-one of these families also fulfilled the criteria for LFL or LFS. All families had previously been found negative for germline BRCA1 BRCA2 and TP53 mutations, together explaining about 23% of hereditary predisposition to breast cancer in our country. Only one missense-type mutation, Ile157→Thr157, was detected. The high Ile157→ Thr157mutation frequency (6.5%) observed in healthy controls and the lack of other mutations suggest that CHK2 does not contribute significantly to the hereditary breast cancer or LFL-associated breast cancer risk, at least not in the Finnish population. For Ile157→ Thr157our result deviates from what has been reported previously. © 2001 Cancer Research Campaign www.bjcancer.com
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Allinen, M., Huusko, P., Mäntyniemi, S. et al. Mutation analysis of the CHK2gene in families with hereditary breast cancer. Br J Cancer 85, 209–212 (2001). https://doi.org/10.1054/bjoc.2001.1858
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DOI: https://doi.org/10.1054/bjoc.2001.1858
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