In addition, the combination of miR‐320d and CEA (carcinoembryonic antigen, CEA is a recommended prognostic marker in CRC for tumor diagnosis and monitoring response to therapy) had an AUC of 0.804 with a sensitivity of 63.3% and specificity of 91.3% (Figure 3C). This evidence concerns the gene CEACAM5 and colorectal carcinoma.