MUC2 and colorectal adenocarcinoma: Therefore, the present study was undertaken to investigate the relation between the expression of secretory MUC genes and clinical variables.It has been shown that the expression of MUC2 in CRC depends on the type of tumor, indicating a decrease in the expression of this gene in colorectal adenocarcinomas [10,11] and an increase in the expression of MUC2 in mucinous carcinomas [24].