These variables included age, HbA1c, PPI-2h, PCP-2h, DPN, coronary heart disease, urinary frequency, polyuria, UI, UR, UMA-24h, TCO2, PAB, T-Bil, I-Bil, IgG, IgA, IgE, C4, SG, URBC, UWBC, and mono%. The gene discussed is C4A; the disease is coronary artery disorder.