APC and Familial adenomatous polyposis: Among these, we can highlight syndromes caused by mutations in the APC gene, such as familial adenomatous polyposis and Gardner syndrome; mutations in the DNA repair system, such as Lynch syndrome, mutations in the MUTYH gene, such as MUTYH-associated polyposis (MAP); as well as more uncommon syndromes such as type X colorectal cancer and Peutz-Jeghers syndrome [6].