Abstract
Purpose
To assess the efficacy and safety of low-dose prasugrel compared to clopidogrel based on the occurrence of major adverse cardiac events (MACEs) and major bleeding in patients with acute coronary syndromes (ACS) undergoing percutaneous coronary intervention (PCI).
Methods
The PubMed, Embase, Cochrane Central Register of Controlled Trials, and ClinicalTrials.gov databases were systematically searched up to May 2020 to identify relevant randomized controlled trials (RCTs) and observational studies. A meta-analysis was conducted using a random effects model to estimate relative risks (RRs) with 95% confidence intervals (CIs). The primary efficacy and safety endpoints were MACE and major bleeding, respectively.
Results
Three RCTs (n = 2884) and five observational studies (n = 30,117) were included. A meta-analysis of RCTs revealed no significant differences in terms of MACE (RR 0.92, 95% CI 0.74 to 1.16) or major bleeding (RR 0.97, 95% CI 0.57 to 1.65) between low-dose prasugrel and clopidogrel. A meta-analysis of observational studies revealed no significant difference in terms of MACE (RR 1.13, 95% CI 0.82 to 1.55) between the two groups, but low-dose prasugrel was associated with a significantly increased risk of major bleeding (RR 1.33, 95% CI 1.02 to 1.72).
Conclusions
We found that low-dose prasugrel was not associated with changes in MACE or major bleeding compared with clopidogrel in RCTs. However, analysis of data from observational studies revealed that low-dose prasugrel was associated with an increased risk of major bleeding compared with clopidogrel.
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Data Availability
The authors confirm that the data supporting the findings of this study are available within the article and its supplementary materials.
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Acknowledgements
We are grateful to Adam Joseph Osman Dede (Research specialist, School of Pharmaceutical Sciences, University of Phayao) for proofreading and English language review.
Funding
The study was supported by a grant from the Unit of Excellence on Clinical Outcomes Research and IntegratioN (UNICORN) Grant number: FF64-UoE003, School of Pharmaceutical Sciences, University of Phayao. The funding source had no role in the study design, collection, analysis, and interpretation of data.
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Yuttana Wongsalap: design, data collection, analysis, interpretation, writing the manuscript, critical revision, and final approval. Supakorn Ungsriwong: data collection. Wanalee Kumtep: data collection. Surasak Saokaew: data collection, critical revision, and final approval. Vichai Senthong: critical revision and final approval. Kirati Kengkla: design, data collection, analysis, interpretation, writing the manuscript, critical revision, and final approval.
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Wongsalap, Y., Ungsriwong, S., Kumtep, W. et al. Efficacy and Safety of Low-Dose Prasugrel Versus Clopidogrel in Patients with Acute Coronary Syndrome Undergoing Percutaneous Coronary Intervention: a Systematic Review and Meta-analysis. Cardiovasc Drugs Ther 36, 991–1000 (2022). https://doi.org/10.1007/s10557-021-07202-1
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DOI: https://doi.org/10.1007/s10557-021-07202-1