CEACAM5 and neoplasm: Under the condition of p < 0.05, the AUCs of individual tumor markers CEA, CA19-9, CYFRA 21-1, CA 72-4, CA 242, and CA 125 were 0.79 (95% Cl 0.73–0.85), 0.77 (95% Cl 0.70–0.83), 0.68 (95% Cl 0.60–0.76), 0.68 (95% Cl 0.60–0.75), 0.63 (95% Cl 0.54–0.71), and 0.58 (95% Cl 0.49–0.66), respectively.