MUC4 and colorectal carcinoma: Here, we genotyped a set of potentially functional SNPs in the MUC1, MUC2, MUC4, MUC5AC, MUC6, and B3GNT6 genes in a case-control study of 1532 CRC patients and 1108 healthy controls from the Czech Republic and evaluated their association with CRC susceptibility, progression, and prognosis.