Appropriate Duration of Anti-Platelet straTegy in Patients With Advance Chronic Kidney Disease After New Generation Drug Eluting Stents (ADAPT-CKD)

Inclusion Criteria: 1. Over 19 years old 2. Chronic Renal Failure Stage IIIb, IV, V (CKD-EPI eGFR \<45 / \<30 / \<15 or dialysis) 3. Patients treated with a new generation drug eluting stent. 4. Patients who signed consent form Exclusion Criteria: 1. Over 85 years old 2. Patients with high risk of bleeding 1) History of hemorrhagic stroke 2) Stroke, dementia or central nervous system damage within 1 year 3) Head trauma or brain surgery within 6 months 4) Tumor in the skull 5) If aortic dissection is suspected 6) Internal bleeding within 6 weeks 7) In case of active bleeding or bleeding disorder 8) In case of major surgery, trauma or bleeding within 3 weeks 3. Patients who need oral anticoagulant 4. Pregnant women or women of childbearing age 5. Life expectancy is less than 1 year 6. Patients with a history of intracranial bleeding 7. Moderate to severe hepatic impairment (Child-Pugh class B or C)