Univariate logistic regression analysis revealed that marital status, gender, tumor location, pathological type, T stage, radiotherapy status, chemotherapy status, age, maximum tumor diameter, LNR, serum CEA levels, PNI, and tumor differentiation were significantly associated with the 5-year survival rate of stage III CRC postoperative patients (P < 0.05). Here, CEACAM5 is linked to neoplasm.