In this study, we analyzed 528 non‐AMI CHD patients and finally we found elevating Lp(a) was associated with risk for postprocedural cTnI levels above 1 × ULN up to 15 × ULN after adjustment of covariates including other serum lipids, indicating that Lp(a) was associated to PCI‐related myocardial injury independently of other serum lipids. The gene discussed is TNNI3; the disease is coronary artery disorder.