The age-adjusted mean values significantly different between the two PAD groups were ApoB (P < 0.05), Lp-A-II:B:C:D:E (P < 0.05), Lp-B:E + Lp-B:C:E (P < 0.05), Lp-B:C (P < 0.05), and Lp-A-I (P < 0.05), as the subjects on statin therapy had lower values. The gene discussed is LPA; the disease is peripheral arterial disease.