Real-World Comparison of Clopidogrel With Ticagrelor and Prasugrel in Patients With Chronic Coronary Disease Undergoing Atherectomy

Background In patients with chronic coronary disease (CCD), it is unclear whether the use of potent P2Y12 inhibitors (ticagrelor or prasugrel) offers advantages to clopidogrel when prescribed in conjunction with aspirin in patients undergoing percutaneous coronary intervention (PCI) with atherectomy. Methods Consecutive patients undergoing PCI with atherectomy for CCD at a tertiary care center between January 2011 to December 2020 were included. Patients discharged on ticagrelor or prasugrel were compared to patients on clopidogrel. The primary outcome was a composite of death or myocardial infarction (MI), secondary outcomes included individual components of the primary outcome, stroke, major bleeding, and target vessel revascularization at 1 year. Adjusted analyses were performed using propensity score stratification. Results Overall, 3,612 patients undergoing atherectomy were included in the analysis (clopidogrel [70.4%, n= 2,543], ticagrelor/prasugrel [29.5%, n=1,069]). Clopidogrel was prescribed more often in older patients with multimorbid risk factors, whereas ticagrelor/prasugrel was used more in patients with greater anatomical and procedural complexity. There was an increase in the use of potent antiplatelet agents over time (p<0.001). At 1-year follow-up, the primary outcome was observed in 5.2% and 4.0% of those taking clopidogrel and ticagrelor/prasugrel, respectively (adjusted hazard ratio (AHR) 0.87, 95% CI 0.58 – 1.3, p = 0.50). There were no significant differences in the rate of bleeding (5.5% vs 3.7%, AHR 0.98, 95% CI 0.66 - 1.46, p = 0.92) or other secondary outcomes between the two groups. Conclusion The use of clopidogrel was associated with comparable ischemic and bleeding outcomes compared to ticagrelor/prasugrel in patients with CCD undergoing PCI with atherectomy. ### Competing Interest Statement A. Alessandro Spirito received a research grant from the Swiss National Science Foundation. B. Dr Mehran has received institutional research grants from Abbott, Abiomed, Applied Therapeutics, Arena, AstraZeneca, Bayer, Biosensors, Boston Scientific, Bristol Myers Squibb, CardiaWave, CellAegis, CERC, Chiesi, Concept Medical, CSL Behring, DSI, Insel Gruppe, Medtronic, Novartis Pharmaceuticals, OrbusNeich, Philips, Transverse Medical, and Zoll; has received personal fees from the American College of Cardiology, Boston Scientific, the California Institute for Regenerative Medicine, Cine-Med Research, Janssen, WebMD, and the Society for Cardiovascular Angiography and Interventions; has received consulting fees paid to the institution from Abbott, Abiomed, AM-Pharma, Alleviant Medical, Bayer, Beth Israel Deaconess, CardiaWave, CeloNova, Chiesi, Concept Medical, DSI, Duke University, Idorsia Pharmaceuticals, Medtronic, Novartis, and Philips; holds equity (<1%) in Applied Therapeutics, Elixir Medical, STEL, and CONTROLRAD (spouse); has served as a scientific advisory board member for the American Medical Association; and has a spouse who has served as a scientific advisory board member for Biosensors (spouse). C. All other authors have reported that they have no relationships relevant to the contents of this paper to disclose. ### Funding Statement No funding was used for this study ### Author Declarations I confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained. Yes The details of the IRB/oversight body that provided approval or exemption for the research described are given below: The study was approved by the Institutional Board Review at Mount Sinai Hospital, New York. I confirm that all necessary patient/participant consent has been obtained and the appropriate institutional forms have been archived, and that any patient/participant/sample identifiers included were not known to anyone (e.g., hospital staff, patients or participants themselves) outside the research group so cannot be used to identify individuals. Yes I understand that all clinical trials and any other prospective interventional studies must be registered with an ICMJE-approved registry, such as [ClinicalTrials.gov][1]. I confirm that any such study reported in the manuscript has been registered and the trial registration ID is provided (note: if posting a prospective study registered retrospectively, please provide a statement in the trial ID field explaining why the study was not registered in advance). Yes I have followed all appropriate research reporting guidelines, such as any relevant EQUATOR Network research reporting checklist(s) and other pertinent material, if applicable. Yes The data that support the findings of this study are available from the corresponding author upon reasonable request * CCD : Chronic coronary disease CSI : Cardiovascular solution inclusive CTO : Chronic total occlusion ELCA : Excimer laser coronary atherectomy OA : Orbital atherectomy RA : Rotational atherectomy TLR : Target lesion revascularization [1]: https://ClinicalTrials.gov