Older age (HR = 1.05), with DM (HR = 1.87), postoperative CEA levels >5 ng/mL (HR = 4.92), as well as lymph nodes ratio (HR = 1.03), and presence of stage IV disease (HR = 17.91), were associated with an increased risk of all-cause mortality. Here, CEACAM5 is linked to diabetes mellitus.