CEACAM5 and colorectal carcinoma: For example, CA125 (MUC16), along with other serological markers, such as carcinoembryonic antigen (CEA), carbohydrate antigen 19-9 (CA19-9), tissue-polypeptide-specific antigen (TPS), and tumor-associated glycoprotein-72 (TAG-72), have been used clinically as serum-based biomarkers for CRC patients [119,209,213].