CEACAM5 and colon carcinoma: Benderska et al. (2015) have proven that a combined evaluation of ki-67 and miR-26b expression profiles could accurately detect 93% UC-associated colonic carcinoma. Its application in classifying different stages of CRC has also been confirmed. Recently, a Chinese research team developed a blood-based diagnostic model comprising of five circulating miRNA markers (miR-15b, miR-17, miR-21, miR-26b, and miR-145) and CEA, which could correctly diagnose CRC with an AUC of 0.85, followed by CEA of 0.793, and five-miRNA panel of 0.681 (Pan et al., 2017).