CEACAM5 and colorectal cancer: Significant results were obtained for colorectal cancer with increased (vs. decreased) levels of carcinoembryonic antigen (CEA) [OR 1.63, 95% CI 1.46–1.82 (p ≤ 0.001)] and carbohydrate antigen 19-9 (CA19-9) [OR 2.09; 95% CI 1.43–3.08 (p = 0.001)].