Pathohistological data for CRC patients (Table 2) were included in the statistical analysis to examine whether advanced stages of the cancer are associated with increased or decreased concentrations of CEA and CA 19-9 or expressions of the four chosen miRNAs: miR-19a-3p, miR-92a-3p, miR-193a-3p, and miR-210-3p. This evidence concerns the gene CEACAM5 and cancer.