CEACAM5 and neoplasm: Tumor size (OR = 0.428, p < 0.001), interval time between NCRT and surgery (OR = 1.141, p = 0.036), pre-NCRT clinical T stage (OR = 0.641, p = 0.027), pre-NCRT clinical N stage (OR = 0.514, p = 0.031), lymph nodes harvested (OR = 0.955, p = 0.008), and post-NCRT carcinoembryonic antigen (CEA) (OR = 0.872, p = 0.003) were significantly correlated with pCR in patients with LARC.