The baseline clinicopathological characteristics of the SDQSS and DHS groups of CRC patients are shown in Table 1, including sex, age, body mass index (BMI), primary site of CRC, tumor differentiation degree and pathological stage, carcinoembryonic antigen (CEA), carbohydrate antigen 19-9 (CA199), hemoglobin (HGB), red blood cell (RBC), white blood cell (WBC), platelet counts, alanine aminotransferase (ALT), aspartate aminotransaminase (AST), albumin (ALB), total bilirubin (TBil), blood urea nitrogen (BUN), and serum creatinine (Scr). The gene discussed is CEACAM5; the disease is neoplasm.