APOA1 and coronary artery disorder: HDL-C and apoA-I levels both decreased significantly in patients with coronary heart disease (0.96 ± 0.01 vs. 1.09 ± 0.03, P < 0.001 and 1.12 ± 0.01 vs. 1.18 ± 0.02, P < 0.001, respectively), along with HDL-C/apoA-I (0.85 ± 0.13 vs. 0.92 ± 0.20, P = 0.005), while Lp(a) levels were shown to increase in coronary heart disease patients (0.31 ± 0.01 vs. 0.25 ± 0.02, P = 0.001).