Abstract
MUTYH-associated polyposis (MAP) is responsible for 0.7% of all colorectal cancers (CRC) and 13% of all colorectal polyposis. MUTYH gene plays a role in the base excision repair system of DNA, and when it is mutated, leads to GC:TA transversions in several genes, including KRAS and PIK3CA. In CRC, KRAS mutations are observed in 50% of the cases and they are mainly missense mutations in co…