The level of serum β2-GPI/oxLDL in the control group, in the T2DM group, and in the DCI group was 0.79 (0.57, 1.03), 1.09 (0.88, 1.28), and 1.34 (1.03, 1.68) mmol/L, respectively. The gene discussed is APOH; the disease is type 2 diabetes mellitus.