To compare the clinical outcomes of P2Y12 antagonist monotherapy with aspirin plus P2Y12 antagonist following 3-month of DAPT in patients undergoing PCI with bioabsorbable polymer Everolimus-eluting stents (Synergy®)

Inclusion Criteria:

1. Age 19+
2. Patients treated with a new generation of Evelorimus-eluting stents (Synergy®)
3. Patients who understand the content of the subject description and voluntarily sign the subject

Exclusion Criteria:

1. Age 86+
2. Hemodynamically unstable patient
3. Severe hypersensitivity reactions to aspirin, clopidogrel, ticagrelor, everolimus, contrast agent
4. Patients at high risk of bleeding, anemia, thrombocytopenia
5. Patients requiring oral anticoagulants
6. Pregnant women or women of childbearing age
7. Life expectancy is less than one year
8. Patients receiving a potent CYP3A4 inhibitor (eg, ketoconazole, clarithromycin, napjodone, ritonavir, atazanavir)
9. Patients with a history of intracranial hemorrhage
10. Patients with moderate to severe hepatic impairment
11. Patients underwent coronary intervention with stenting within 1 year
12. Patients with left-main lesions requiring coronary intervention
13. Patients with chronic stricture lesions requiring treatment
14. Patients with in-stent restenosis in a lesion requiring treatment
15. Patients with bifurcation lesions requiring stenting in lateral branches
16. Patients with lesions requiring more than 3 stents