PCSK9 and coronary artery disorder: We observed that the percentage of patients with three-vessel disease (17.30% vs. 31.01% vs. 50.45% vs. 66.52%, p < 0.001) and GS [23 (21) vs. 30 (21) vs. 36 (24) vs. 46 (20), p < 0.001] increased in the high PCSK9 group, whereas the percentage of patients with one-vessel disease decreased (p < 0.001), indicating that PCSK9 levels may be associated with CHD severity.