Background: The end-stage renal disease is generally known as a high risk factor for coronary artery disease. But it is unknown whether renal insufficiency (RI) with normal serum creatinine level is associated with adverse clinical outcomes after percutaneous coronary intervention (PCI). The aim of this study is to evaluate the relationship with RI and adverse clinical outcomes. Method: 620 patients (845 stents) were consecutively enrolled who was diagnosed as stable angina and underwent PCI since March 2003 to June 2006. All the patients with normal serum creatinine level were evaluated creatinine clearance (CCr) by Cockcroft-Gault equation and divided into 2 groups according to the degree of CCr: group 1 - CCr < 60 mg/dL and group 2 - CCr ��� 60 mg/dL. 12 months adverse clinical outcomes and 6 to 9 months angiographic follow-up results were analyzed. Results: Major adverse cardiac events were 2.5% in group1 and 5.5% in group 2. Other data are in the following figure. Conclusion: Renal insufficiency is not a risk factor for adverse cardiac events as well as all cause mortality in the angina pectoris with normal serum creatinine level.