The univariate analysis shows that patient age, CEA level, lymphocyte count, albumin, NLR, SII, PNI, tumor distance from the anus, tumor size, tumor invasion of the intestinal wall, cT stage, cN stage, TRG grade, KRAS status, and microsatellite status are associated with survival (Table 2). Here, CEACAM5 is linked to neoplasm.