Clinical research

DOI: 10.4244/EIJ-D-22-00719

Impact of evolocumab on the pharmacodynamic profiles of clopidogrel in patients with atherosclerotic cardiovascular disease: a randomised, double-blind, placebo-controlled study

Francesco Franchi1, MD; Luis Ortega-Paz1, MD, PhD; Fabiana Rollini1, MD; Latonya Been1, AAS; Andrea Rivas1, MD; Naji Maaliki1, MD; Xuan Zhou1, MD; Andres M. Pineda1, MD; Siva Suryadevara1, MD; Daniel Soffer1, MD; Martin Zenni1, MD; Dominick J. Angiolillo1, MD, PhD

Abstract

Background: The impact of intense low-density lipoprotein cholesterol (LDL-C) reduction using a proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor on profiles of platelet reactivity has yet to be explored.

Aims: Our aim was to investigate the effects of the PCSK9 inhibitor, evolocumab, on platelet reactivity in patients with atherosclerotic cardiovascular disease (ASCVD) on clopidogrel treatment.

Methods: This was a prospective, randomised, double-blind, placebo-controlled pharmacodynamic study in patients with ASCVD on clopidogrel treatment and with LDL-C levels ≥70 mg/dL despite a maximally tolerated statin dose. Patients were stratified according to levels of platelet reactivity using VerifyNow P2Y12 reactivity units (PRU) into high platelet reactivity (HPR; PRU >208) or normal platelet reactivity (NPR; PRU >85 and ≤208). Each cohort was randomised to receive evolocumab 420 mg or placebo. The primary endpoint was the difference in PRU at 30 days.

Results: A total of 84 patients (HPR, n=37 [19 evolocumab vs 18 placebo]; NPR, n=47 [22 evolocumab vs 25 placebo]) were included. Evolocumab significantly reduced LDL-C compared to placebo at 14 (p<0.001) and 30 (p=0.001) days. At 14 days, PRU levels...

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Volume 18 Number 15
Mar 20, 2023
Volume 18 Number 15
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