Sequential MonotherApy of TicagrElor and Clopidogrel After Coronary Intervention

Official title

Efficacy and Safety of Sequential Monotherapy of Ticagrelor and Clopidogrel in Patients Undergoing Percutaneous Coronary Intervention With Acute Coronary Syndrome

Overview

The MATE study is a randomized, multicenter, open-label, investigator-initiated clinical trial aimed to evaluate efficacy and safety of sequential monotherapy of ticagrelor and clopidogrel in patients with acute coronary syndrome (ACS) after coronary intervention. Standard DAPT of aspirin plus ticagrelor will be given for the first 1 month after PCI. After 1 month, event-free subjects will be randomized at 1:1 ratio into receiving standard DAPT (DAPT) until 12months , or switch to ticagrelor monotherapy for another 5 months , and further de-escalated to monotherapy of clopidogrel for the last 6 months(SAPT).

Detailed description

Compared with clopidogrel, ticagrelor inhibit platelet aggregation faster and stronger, and significantly reduce the risk of cardiovascular and cerebrovascular adverse events. In recent years, it has been given the strongest recommendation for antiplatelet therapy in ACS patients. Nevertheless, it was shown that excessive bleeding events significantly affect its antithrombotic advantage and better safety by downgrading regimen can seek more net clinical benefit. However, there are still huge controversies regarding the degree or timing of the downgrading regimen.

GLOBAL LEADERS study shortened the course of DAPT after PCI to 1 month in "all-comer" population of coronary heart disease , and then downgraded to ticagrelor monotherapy and continued 23 months. At 12 months, compared with standard DAPT, there was neither increased risk of thrombotic events, nor significant reduction in BARC3 or type 5 major bleeding events, which suggested satisfactory safety of 1-month DAPT, and relative insufficiency de-escalation. The most recent STOPDAPT-2 ACS study not only adapted 1-month DAPT (prasugrel or clopidogrel + aspirin) in ACS patients, but also directly downgraded to clopidogrel monotherapy. Compared with standard DAPT of clopidogrel + aspirin, clopidogrel monotherapy significantly reduces the risk of bleeding, however, it also increases the thrombotic risk. Overrall, the investigators believe that de-escalated antiplatelet therapy are most suitable in ACS patients undergoing PCI. Short-course DAPT based on potent P2Y12 inhibitors will not increase the thrombotic risk, but continuous application of one single P2Y12 receptor antagonists may be difficult to take into account both the antithrombotic efficacy and bleeding benefit, while the sequential monotherapy of ticagrelor and clopidogrel may be more conducive to balancing the two needs.

In summary, the current project aimed at"all-comer"population of ACS, for the first time proposed a de-escalated antiplatelet regimen of sequential monotherapy of ticagrelor and clopidogrel. In this project, ticagrelor monotherapy will be used 1 month after PCI, and the anti-platelet strength will be further downgraded 5 months later to clopidogrel (75 mg) monotherapy till 1 year, which is supposed to achieve a better safety benefit and a non-inferior efficacy.

Interventions

• Drug Standard-DAPT of Ticagrelor plus aspirin
  Ticagrelor 90mg bid+Aspirin 100mg qd for 1 month after PCI, Randomized subjects continue for another 11 months
• Drug Sequential monotherapy of Ticagrelor and clopidogrel
  Ticagrelor 90mg bid+Aspirin 100mg qd for 1 month after PCI, Randomized subjects switch to ticagrelor 90mg bid for 5 months; then clopidogrel 75mg qd, for another 6 months.

Primary outcome measures

• NACCE [Time frame: 1-12months after PCI (11 months after randomization)]

Secondary outcome measures (1)

• MACCE [Time frame: 1-12months after PCI (11 months after randomization)]

Eligibility criteria

Inclusion criteria

• Age 18-80 years old;
• Acute coronary syndrome was diagnosed upon admission;
• Administered ticagrelor for at least 30 days after successful PCI with implantation of a current-generation drug-eluting stent(s)
• Agree to the study protocol and the schedule of clinical follow-up, and provides informed, written consent

Exclusion criteria

• Implanted with first-generation DES or bioabsorbable stent(s) during hospitalization;
• Patients with active pathological bleeding (such as peptic ulcer or intracranial hemorrhage);
• History of intracranial hemorrhage, intracranial neoplasms, intracranial vascular malformations or hemangioma
• High potential risk of major bleeding, such as acute or chronic gastrointestinal ulcers or other gastrointestinal diseases, alignant tumors, etc.;
• Thrombolytic therapy within 24 hours of index PCI;
• Planned coronary revascularization (surgical or percutaneous) within 30 days;
• Allergic to ticagrelor, clopidogrel or aspirin and any excipients;
• Inability to tolerate 12-month DAPT (ticagrelor+aspirin) for any reason;
• Cardiogenic shock or hemodynamic instability;
• Diagnosed as active hepatitis or liver cirrhosis upon admission;
• Suffer from a known serious progressive disease (e.g. progressive cancer, chronic obstructive lung disease, etc.;) or estimated survival time<12 months ;
• Platelet count<100000 /mm3;
• Dialysis-dependent renal failure；
• Required use of oral anticoagulation (warfarin or other factor II or factor X inhibitors);
• Pregnant or plan to be pregnant within 1 year;
• Any condition that may interfere with any study procedures, such as dementia, immobility, alcohol use, etc;
• Participating in any other clinical trial of an investigational drug or device that has not met its primary endpoint.

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation

Randomized

Model

Parallel assignment

Masking

Open label

Primary purpose

Treatment

Study locations

China · 1 center

• 2nd Affiliated Hospital, School of Medicine at Zhejiang University — Hangzhou

Publications

• Watanabe H, Morimoto T, Natsuaki M, Yamamoto K, Obayashi Y, Ogita M, Suwa S, Isawa T, Domei T, Yamaji K, Tatsushima S, Watanabe H, Ohya M, Tokuyama H, Tada T, Sakamoto H, Mori H, Suzuki H, Nishikura T, Wakabayashi K, Hibi K, Abe M, Kawai K, Nakao K, Ando K, Tanabe K, Ikari Y, Morino Y, Kadota K, Furukawa Y, Nakagawa Y, Kimura T; STOPDAPT-2 ACS Investigators. Comparison of Clopidogrel Monotherapy A PMID 35234821
• Gurbel PA, Bliden KP, Butler K, Tantry US, Gesheff T, Wei C, Teng R, Antonino MJ, Patil SB, Karunakaran A, Kereiakes DJ, Parris C, Purdy D, Wilson V, Ledley GS, Storey RF. Randomized double-blind assessment of the ONSET and OFFSET of the antiplatelet effects of ticagrelor versus clopidogrel in patients with stable coronary artery disease: the ONSET/OFFSET study. Circulation. 2009 Dec 22;120(25):25 PMID 19923168
• Wallentin L, Becker RC, Budaj A, Cannon CP, Emanuelsson H, Held C, Horrow J, Husted S, James S, Katus H, Mahaffey KW, Scirica BM, Skene A, Steg PG, Storey RF, Harrington RA; PLATO Investigators; Freij A, Thorsen M. Ticagrelor versus clopidogrel in patients with acute coronary syndromes. N Engl J Med. 2009 Sep 10;361(11):1045-57. doi: 10.1056/NEJMoa0904327. Epub 2009 Aug 30. PMID 19717846
• Authors/Task Force members; Windecker S, Kolh P, Alfonso F, Collet JP, Cremer J, Falk V, Filippatos G, Hamm C, Head SJ, Juni P, Kappetein AP, Kastrati A, Knuuti J, Landmesser U, Laufer G, Neumann FJ, Richter DJ, Schauerte P, Sousa Uva M, Stefanini GG, Taggart DP, Torracca L, Valgimigli M, Wijns W, Witkowski A. 2014 ESC/EACTS Guidelines on myocardial revascularization: The Task Force on Myocardial PMID 25173339
• Levine GN, Bates ER, Blankenship JC, Bailey SR, Bittl JA, Cercek B, Chambers CE, Ellis SG, Guyton RA, Hollenberg SM, Khot UN, Lange RA, Mauri L, Mehran R, Moussa ID, Mukherjee D, Ting HH, O'Gara PT, Kushner FG, Ascheim DD, Brindis RG, Casey DE Jr, Chung MK, de Lemos JA, Diercks DB, Fang JC, Franklin BA, Granger CB, Krumholz HM, Linderbaum JA, Morrow DA, Newby LK, Ornato JP, Ou N, Radford MJ, Tamis PMID 26498666
• Wu B, Lin H, Tobe RG, Zhang L, He B. Ticagrelor versus clopidogrel in East-Asian patients with acute coronary syndromes: a meta-analysis of randomized trials. J Comp Eff Res. 2018 Mar;7(3):281-291. doi: 10.2217/cer-2017-0074. Epub 2017 Nov 2. PMID 29094604
• Wang HY, Li Y, Xu XM, Li J, Han YL. Impact of Baseline Bleeding Risk on Efficacy and Safety of Ticagrelor versus Clopidogrel in Chinese Patients with Acute Coronary Syndrome Undergoing Percutaneous Coronary Intervention. Chin Med J (Engl). 2018 Sep 5;131(17):2017-2024. doi: 10.4103/0366-6999.239306. PMID 30127210
• Li P, Gu Y, Yang Y, Chen L, Liu J, Gao L, Qin Y, Cai Q, Zhao X, Wang Z, Ma L. Low-dose ticagrelor yields an antiplatelet efficacy similar to that of standard-dose ticagrelor in healthy subjects: an open-label randomized controlled trial. Sci Rep. 2016 Aug 24;6:31838. doi: 10.1038/srep31838. PMID 27554803

Identifiers

NCT: NCT04937699 · 2021-MATE-01

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗