The two groups were similar in age, gender, prevalence of diabetes mellitus, hypertension, cardiovascular diseases and respiratory diseases, HBV and HCV infection, serum bilirubin, AFP, ALT levels, platelet count, PT, tumor size, presence of tumor capsule, liver cirrhosis, BCLC stage and resection type (all P > 0.05). The gene discussed is AFP; the disease is respiratory system disorder.