CEACAM5 and colorectal carcinoma: As shown in Figure 2, the AUC for m6A to differentiate CRC patients from healthy subjects was 0.946 (95% CI, 0.914–0.977), which was significantly higher than the AUC for CEA (0.817; 95% CI, 0.754–0.881), CA125 (0.732; 95% CI, 0.659–0.806), and CA19-9 (0.771; 95% CI, 0.700–0.842).