Mutation in mismatch repair (MMR) and proofreading genes. (A) Colon/rectum (CR) cancer; (B) stomach (ST) cancer; (C) uterus (UT) cancer; (D) other MSI cancers. LI, liver; SK, skin; OV, ovary; PA, pancreas; and KI, kidney. Mutated genes and mutation rate of microsatellites are shown.