Determining the frequency of de novo germline mutations in DNA mismatch repair genes

Abstract excerpt

BACKGROUND: Carriers of a germline mutation in a DNA mismatch repair (MMR) gene--that is, persons with Lynch syndrome--have substantially high risks of colorectal (CRC), endometrial, and several other cancers. The proportion of carriers who have de novo mutations (not inherited from either parent) is not known. This study reports a case series of de novo mutations in MMR genes and estimates the frequency of de...

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