CEACAM5 and neoplasm: However, none of the other covariates—including ASA score (HR = 0.987, p = 0.953), CEA > 5 ng/mL (HR = 1.000, p = 0.523), CA 19-9 > 37 U/mL (HR = 1.000, p = 0.976), tumor localization (HR = 1.445, p = 0.382), or age (HR = 1.016, p = 0.174)—reached statistical significance as independent predictors.