These findings are summarized as follows: tumor histological differentiation (grading) (OR = 0.15, 95% CI = 0.03–0.74, p = 0.02), primary tumor location (OR = 2.49, 95% CI = 1.21–5.12, p = 0.013), tumor macroscopic type (OR = 0.42, 95% CI = 0.22–0.81, p = 0.01), N staging in CT (OR = 3.44, 95% CI = 1.74–6.80, p < 0.001), CEA (OR = 3.13, 95% CI = 1.60–6.13, p = 0.001), and PLR (OR = 2.07, 95% CI = 1.08–3.96, p = 0.028) (as depicted in Table 2). The gene discussed is CEACAM5; the disease is neoplasm.