Backgrounds:?Clinical impact of stabilized myocardial infarction (MI) following successful percutaneous coronary intervention (PCI) after 1 year is not clearly elucidated yet.?Methods:?We pooled 3,583 patients underwent PCI with drug-eluting stents (DESs). Of them, 658 was ST-elevation MI (STEMI), 632 non-ST segment elevation MI (NSTEMI), 1,297 unstable angina (UA), and 996 stable angina (SA). We compared 0-1 year and 1-5 years composite of cardiac death (CD) and MI among 4 groups.?Results:?With survival analysis of 0-1 year clinical follow up, a stepwise increase of the composite of CD and MI was observed in the transition from SA to STEMI. (SA; 1.2% vs. UA; 1.4% vs. NSTEMI; 5.2% vs. STEMI; 8.1%; Log-Rank <0.001). Even in the comparison of 1-5 year clinical outcomes between 4 groups, there was the same pattern of transition (SA; 1.7% vs. UA; 2.0% vs. NSTEMI; 3.9% vs. STEMI; 4.3%; Log-Rank=0.002, Figure). After Unadjusted cox-proportional analysis, STEMI and NSTEMI were independently associated with greater risk of 1-5 year CD or MI rather than SA (HR 2.70; 95% CI 1.361 to 5.364; p=0.004, HR 2.45; 95% CI 1.201 to 5.001; p=0.014), whereas UA were not significantly influential on CD or MI.?Conclusions:?Across the clinical spectrum of different coronary artery disease, STEMI and NSTEMI were associated with a greater risk of long-term CD or MI at 1 year. Even after stabilized by PCI in STEMI and NSTEMI patients beyond 1 year, the incidence of CD or MI was still higher than that of the patients with UA and SA