Result analysis: Of the 15 related factors of prostate cancer, there were 9 related factors with statistically significant changes in goodness of fit (step 9): age, Apo C2, Apo C3, Apo E, CKMB, triglycerides, high-density lipoprotein cholesterol, iCa, tPSA. The gene discussed is APOC3; the disease is prostate cancer.