Serum adiponectin levels in different groups were as follows; control group: ≤ 50 years (532.5 ± 23.6 μg/L), ≤ 70 years (491.9 ± 15.3 μg/L), > 70 years (478.7 ± 4.7 μg/L); CAD group: ≤ 50 years (379.4 ± 26.5 μg/L), ≤ 70 years (369.4 ± 21.9 μg/L), > 70 years (369.0 ± 19.2 μg/L); MS group: ≤ 50 years (454.3 ± 28.3 μg/L), ≤ 70 years (447.4 ± 23.7 μg/L), >70 years (454.4 ± 23.5 μg/L) and CAD + MS group: ≤ 50 years (245.2 ± 39.7 μg/L), ≤ 70 years (268.3 ± 22.4 μg/L), > 70 years (268.4 ± 16.6 μg/L). The gene discussed is ADIPOQ; the disease is coronary artery disorder.