Germline and somatic polymerase ε and δ mutations define a new class of hypermutated colorectal and endometrial cancers.
Polymerases ε and δ are the main enzymes that replicate eukaryotic DNA. Accurate replication occurs through Watson-Crick base pairing and also through the action of the polymerases' exonuclease (proofreading) domains. We have recently shown that germline exonuclease domain mutations (EDMs) of POLE and POLD1 confer a high risk of multiple colorectal adenomas and carcinoma (CRC). POLD1 mutations also predispose to endometrial cancer (EC). These mutations are associated with high penetrance and ...Expand abstract
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