Early Single Antiplatelet Therapy After IVUS-Guided PCI in Acute Coronary Syndrome

NCT07684742 | Not Yet Recruiting Phase 4 DMC

• 1 other identifier: SAPT-ACS
• Study Type: interventional
• Target: 1,900
• Locations: 1 country
• Sites: 1

Brief Summary

This is a prospective, open-label, multicenter, randomized, phase IV clinical trial designed to evaluate the safety and efficacy of early aspirin discontinuation followed by potent P2Y12 inhibitor monotherapy after intravascular ultrasound (IVUS)-guided drug-eluting stent implantation in patients with acute coronary syndrome. A total of 1,900 patients who achieve complete revascularization after IVUS-guided percutaneous coronary intervention (PCI) and meet the predefined successful IVUS-guided PCI criteria will be randomized in a 1:1 ratio to either the early single antiplatelet therapy group (Early SAPT: ticagrelor or prasugrel monotherapy) or the standard dual antiplatelet therapy group (Standard DAPT: aspirin plus ticagrelor or prasugrel). Randomization will be performed within 96 hours after completion of PCI, and clinical follow-up will be conducted at 1 month, 3 months, 6 months, and 12 months after randomization. The primary endpoints are major adverse cardiovascular events, defined as a composite of all-cause death, myocardial infarction, ischemia-driven target vessel revascularization, and definite or probable stent thrombosis occurring up to 12 months after randomization, and clinically relevant bleeding, defined as Bleeding Academic Research Consortium (BARC) type 2, 3, or 5 bleeding occurring up to 12 months after randomization. This study aims to determine whether early P2Y12 inhibitor monotherapy is non-inferior to standard dual antiplatelet therapy (DAPT) for ischemic events and is superior in reducing clinically relevant bleeding.

Conditions

Acute Coronary Syndromes; STEMI; NSTEMI; Unstable Angina

Keywords

Intravascular Ultrasound; Percutaneous Coronary Intervention; Drug-Eluting Stent; Single Antiplatelet Therapy; Dual Antiplatelet Therapy

Outcome Measures

Primary Outcomes (2)

• Major Adverse Cardiovascular Events

  Major adverse cardiovascular events are defined as a composite of all-cause death, myocardial infarction, ischemia-driven target vessel revascularization, and definite or probable stent thrombosis occurring up to 12 months after randomization.

  Up to 12 months after randomization

• Clinically Relevant Bleeding

  Clinically relevant bleeding is defined as the incidence of Bleeding Academic Research Consortium (BARC) type 2, 3, or 5 bleeding events occurring up to 12 months after randomization.

  Up to 12 months after randomization

Secondary Outcomes (10)

• Incidence of Major and Minor Bleeding According to TIMI Criteria

  Up to 12 months after randomization

• Incidence of Major and Minor Bleeding According to ISTH Criteria

  Up to 12 months after randomization

• Incidence of All-Cause Death

  Up to 12 months after randomization

• Incidence of Myocardial Infarction

  Up to 12 months after randomization

• Incidence of Ischemia-Driven Target Vessel Revascularization

  Up to 12 months after randomization

Study Arms (2)

Early Single Antiplatelet Therapy Group

EXPERIMENTAL

Patients with acute coronary syndrome who undergo successful IVUS-guided PCI with complete revascularization will be randomized within 96 hours after PCI. After randomization, aspirin will be discontinued immediately, and patients will receive potent P2Y12 inhibitor monotherapy with either prasugrel or ticagrelor.

Drug: Early P2Y12 Inhibitor Monotherapy

Standard Dual Antiplatelet Therapy Group

ACTIVE COMPARATOR

Patients with acute coronary syndrome who undergo successful IVUS-guided PCI with complete revascularization will receive standard dual antiplatelet therapy consisting of aspirin plus a potent P2Y12 inhibitor for 12 months.

Drug: Standard Dual Antiplatelet Therapy

Interventions

Early P2Y12 Inhibitor Monotherapy DRUG

Participants randomized within 96 hours after successful IVUS-guided PCI will discontinue aspirin immediately after randomization and receive potent P2Y12 inhibitor monotherapy with ticagrelor 90 mg twice daily or prasugrel 10 mg once daily.

Early Single Antiplatelet Therapy Group

Standard Dual Antiplatelet Therapy DRUG

Participants randomized within 96 hours after successful IVUS-guided PCI will receive aspirin 100 mg once daily plus a potent P2Y12 inhibitor, consisting of ticagrelor 90 mg twice daily or prasugrel 10 mg once daily, for 12 months.

Standard Dual Antiplatelet Therapy Group

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Age \>=18 years
• Diagnosis of acute coronary syndrome, including ST-segment elevation myocardial infarction (STEMI), non-ST-segment elevation myocardial infarction (NSTEMI), or unstable angina (UA)
• Successful IVUS-guided PCI with drug-eluting stent implantation
• Randomization within 96 hours after PCI
• Written informed consent

You may not qualify if:

• Planned staged PCI or CABG
• PCI failure, including no-reflow, major dissection, or thrombosis
• Need for oral anticoagulation
• Major bleeding within 30 days
• History of hemorrhagic stroke or ischemic stroke within 6 months
• Platelet count \<100,000/mm3 or WBC count \<3,000/mm3
• Contraindication to aspirin, ticagrelor, or prasugrel
• Life expectancy \<1 year
• Current or potential pregnancy
• Investigator deems participation inappropriate

Sponsors & Collaborators

• Gyeongsang National University Hospital: lead
• CGBio Inc.: collaborator
• Dio Medical: collaborator
• Genoss Co., Ltd.: collaborator
• Biotronik SE & Co. KG: collaborator

Study Sites (1)

Gyeongsang National University Hospital

Jinju, Gyeongsangnam-do, 52727, South Korea

Location

Related Publications (11)

• Vrints C, Andreotti F, Koskinas KC, Rossello X, Adamo M, Ainslie J, Banning AP, Budaj A, Buechel RR, Chiariello GA, Chieffo A, Christodorescu RM, Deaton C, Doenst T, Jones HW, Kunadian V, Mehilli J, Milojevic M, Piek JJ, Pugliese F, Rubboli A, Semb AG, Senior R, Ten Berg JM, Van Belle E, Van Craenenbroeck EM, Vidal-Perez R, Winther S; ESC Scientific Document Group. 2024 ESC Guidelines for the management of chronic coronary syndromes. Eur Heart J. 2024 Sep 29;45(36):3415-3537. doi: 10.1093/eurheartj/ehae177. No abstract available.

  PMID: 39210710 BACKGROUND

• Guimaraes PO, Franken M, Tavares CAM, Antunes MO, Silveira FS, Andrade PB, Bergo RR, Joaquim RM, Tinoco de Paula JE, Nascimento BR, Pitta FG, Arruda JA, Serpa RG, Ohe LN, Mangione FM, Furtado RHM, Ferreira E, Sampaio FBA, T do Nascimento C, Genelhu LOO, Bezerra CG, Sarmento-Leite R, Maia LN, Oliveira FRA, Wainstein MV, Dall'Orto FTC, Monfardini F, Assis SRL, Nicolau JC, Sposito AC, Lopes RD, Onuma Y, Valgimigli M, Angiolillo DJ, Serruys PWJC, Berwanger O, Bacal F, Lemos PA; NEO-MINDSET Trial Investigators. Early Withdrawal of Aspirin after PCI in Acute Coronary Syndromes. N Engl J Med. 2025 Nov 27;393(21):2095-2106. doi: 10.1056/NEJMoa2507980. Epub 2025 Aug 31.

  PMID: 40888723 BACKGROUND

• Lee SY, Jeong YH, Yun KH, Cho JY, Gorog DA, Angiolillo DJ, Kim JW, Jang Y. P2Y12 Inhibitor Monotherapy Combined With Colchicine Following PCI in ACS Patients: The MACT Pilot Study. JACC Cardiovasc Interv. 2023 Aug 14;16(15):1845-1855. doi: 10.1016/j.jcin.2023.05.035.

  PMID: 37587591 BACKGROUND

• Valgimigli M, Frigoli E, Heg D, Tijssen J, Juni P, Vranckx P, Ozaki Y, Morice MC, Chevalier B, Onuma Y, Windecker S, Tonino PAL, Roffi M, Lesiak M, Mahfoud F, Bartunek J, Hildick-Smith D, Colombo A, Stankovic G, Iniguez A, Schultz C, Kornowski R, Ong PJL, Alasnag M, Rodriguez AE, Moschovitis A, Laanmets P, Donahue M, Leonardi S, Smits PC; MASTER DAPT Investigators. Dual Antiplatelet Therapy after PCI in Patients at High Bleeding Risk. N Engl J Med. 2021 Oct 28;385(18):1643-1655. doi: 10.1056/NEJMoa2108749. Epub 2021 Aug 28.

  PMID: 34449185 BACKGROUND

• Mehran R, Baber U, Sharma SK, Cohen DJ, Angiolillo DJ, Briguori C, Cha JY, Collier T, Dangas G, Dudek D, Dzavik V, Escaned J, Gil R, Gurbel P, Hamm CW, Henry T, Huber K, Kastrati A, Kaul U, Kornowski R, Krucoff M, Kunadian V, Marx SO, Mehta SR, Moliterno D, Ohman EM, Oldroyd K, Sardella G, Sartori S, Shlofmitz R, Steg PG, Weisz G, Witzenbichler B, Han YL, Pocock S, Gibson CM. Ticagrelor with or without Aspirin in High-Risk Patients after PCI. N Engl J Med. 2019 Nov 21;381(21):2032-2042. doi: 10.1056/NEJMoa1908419. Epub 2019 Sep 26.

  PMID: 31556978 BACKGROUND

• Kim BK, Hong SJ, Cho YH, Yun KH, Kim YH, Suh Y, Cho JY, Her AY, Cho S, Jeon DW, Yoo SY, Cho DK, Hong BK, Kwon H, Ahn CM, Shin DH, Nam CM, Kim JS, Ko YG, Choi D, Hong MK, Jang Y; TICO Investigators. Effect of Ticagrelor Monotherapy vs Ticagrelor With Aspirin on Major Bleeding and Cardiovascular Events in Patients With Acute Coronary Syndrome: The TICO Randomized Clinical Trial. JAMA. 2020 Jun 16;323(23):2407-2416. doi: 10.1001/jama.2020.7580.

  PMID: 32543684 BACKGROUND

• Vranckx P, Valgimigli M, Juni P, Hamm C, Steg PG, Heg D, van Es GA, McFadden EP, Onuma Y, van Meijeren C, Chichareon P, Benit E, Mollmann H, Janssens L, Ferrario M, Moschovitis A, Zurakowski A, Dominici M, Van Geuns RJ, Huber K, Slagboom T, Serruys PW, Windecker S; GLOBAL LEADERS Investigators. Ticagrelor plus aspirin for 1 month, followed by ticagrelor monotherapy for 23 months vs aspirin plus clopidogrel or ticagrelor for 12 months, followed by aspirin monotherapy for 12 months after implantation of a drug-eluting stent: a multicentre, open-label, randomised superiority trial. Lancet. 2018 Sep 15;392(10151):940-949. doi: 10.1016/S0140-6736(18)31858-0. Epub 2018 Aug 27.

  PMID: 30166073 BACKGROUND

• Hahn JY, Song YB, Oh JH, Chun WJ, Park YH, Jang WJ, Im ES, Jeong JO, Cho BR, Oh SK, Yun KH, Cho DK, Lee JY, Koh YY, Bae JW, Choi JW, Lee WS, Yoon HJ, Lee SU, Cho JH, Choi WG, Rha SW, Lee JM, Park TK, Yang JH, Choi JH, Choi SH, Lee SH, Gwon HC; SMART-CHOICE Investigators. Effect of P2Y12 Inhibitor Monotherapy vs Dual Antiplatelet Therapy on Cardiovascular Events in Patients Undergoing Percutaneous Coronary Intervention: The SMART-CHOICE Randomized Clinical Trial. JAMA. 2019 Jun 25;321(24):2428-2437. doi: 10.1001/jama.2019.8146.

  PMID: 31237645 BACKGROUND

• Watanabe H, Domei T, Morimoto T, Natsuaki M, Shiomi H, Toyota T, Ohya M, Suwa S, Takagi K, Nanasato M, Hata Y, Yagi M, Suematsu N, Yokomatsu T, Takamisawa I, Doi M, Noda T, Okayama H, Seino Y, Tada T, Sakamoto H, Hibi K, Abe M, Kawai K, Nakao K, Ando K, Tanabe K, Ikari Y, Hanaoka KI, Morino Y, Kozuma K, Kadota K, Furukawa Y, Nakagawa Y, Kimura T; STOPDAPT-2 Investigators. Effect of 1-Month Dual Antiplatelet Therapy Followed by Clopidogrel vs 12-Month Dual Antiplatelet Therapy on Cardiovascular and Bleeding Events in Patients Receiving PCI: The STOPDAPT-2 Randomized Clinical Trial. JAMA. 2019 Jun 25;321(24):2414-2427. doi: 10.1001/jama.2019.8145.

  PMID: 31237644 BACKGROUND

• Levine GN, Bates ER, Bittl JA, Brindis RG, Fihn SD, Fleisher LA, Granger CB, Lange RA, Mack MJ, Mauri L, Mehran R, Mukherjee D, Newby LK, O'Gara PT, Sabatine MS, Smith PK, Smith SC Jr. 2016 ACC/AHA Guideline Focused Update on Duration of Dual Antiplatelet Therapy in Patients With Coronary Artery Disease: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines: An Update of the 2011 ACCF/AHA/SCAI Guideline for Percutaneous Coronary Intervention, 2011 ACCF/AHA Guideline for Coronary Artery Bypass Graft Surgery, 2012 ACC/AHA/ACP/AATS/PCNA/SCAI/STS Guideline for the Diagnosis and Management of Patients With Stable Ischemic Heart Disease, 2013 ACCF/AHA Guideline for the Management of ST-Elevation Myocardial Infarction, 2014 AHA/ACC Guideline for the Management of Patients With Non-ST-Elevation Acute Coronary Syndromes, and 2014 ACC/AHA Guideline on Perioperative Cardiovascular Evaluation and Management of Patients Undergoing Noncardiac Surgery. Circulation. 2016 Sep 6;134(10):e123-55. doi: 10.1161/CIR.0000000000000404. Epub 2016 Mar 29. No abstract available.

  PMID: 27026020 BACKGROUND

• Collet JP, Thiele H, Barbato E, Barthelemy O, Bauersachs J, Bhatt DL, Dendale P, Dorobantu M, Edvardsen T, Folliguet T, Gale CP, Gilard M, Jobs A, Juni P, Lambrinou E, Lewis BS, Mehilli J, Meliga E, Merkely B, Mueller C, Roffi M, Rutten FH, Sibbing D, Siontis GCM; ESC Scientific Document Group. 2020 ESC Guidelines for the management of acute coronary syndromes in patients presenting without persistent ST-segment elevation. Eur Heart J. 2021 Apr 7;42(14):1289-1367. doi: 10.1093/eurheartj/ehaa575. No abstract available.

  PMID: 32860058 BACKGROUND

MeSH Terms

Conditions

Acute Coronary Syndrome; ST Elevation Myocardial Infarction; Non-ST Elevated Myocardial Infarction; Angina, Unstable

Condition Hierarchy (Ancestors)

Myocardial Ischemia; Heart Diseases; Cardiovascular Diseases; Vascular Diseases; Myocardial Infarction; Infarction; Ischemia; Pathologic Processes; Pathological Conditions, Signs and Symptoms; Necrosis; Angina Pectoris; Chest Pain; Pain; Neurologic Manifestations; Signs and Symptoms

Study Officials

• Jin-Sin Koh, MD, PhD

  Gyeongsang National University Hospital

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Jin-Sin Koh, MD, PhD

CONTACT

+82-55-750-8467; kjs0175@gmail.com

Study Design

• Study Type: interventional
• Phase: phase 4
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: Open-label, multicenter, randomized, parallel-group trial comparing early potent P2Y12 inhibitor monotherapy versus standard dual antiplatelet therapy after successful IVUS-guided PCI in patients with acute coronary syndrome.

Study Record Dates

• First Submitted: June 29, 2026
• First Posted: July 6, 2026
• Study Start: July 1, 2026
• Primary Completion (Estimated): July 1, 2031
• Study Completion (Estimated): July 1, 2032
• Last Updated: July 6, 2026

Record last verified: 2026-06

Data Sharing

• IPD Sharing: Will not share

Locations

KR (1)