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Randomized Controlled Trial
PCSK9 inhibition in patients with and without prior myocardial infarction or ischemic stroke: A pooled analysis of nine randomized-controlled studies of alirocumab.
- Eric Bruckert, Dean J Kereiakes, Michael J Koren, Michael J Louie, Alexia Letierce, Kathryn Miller, and Christopher P Cannon.
- Groupe Hospitalier Pitié-Salpêtrière, Service d'Endocrinologie, Métabolisme et Prévention des Maladies Cardiovasculaires, Paris, France. Electronic address: eric.bruckert@aphp.fr.
- J Clin Lipidol. 2019 May 1; 13 (3): 443-454.
BackgroundPatients with prior cardiovascular events are at very high risk of recurrent events and may benefit from low-density lipoprotein cholesterol (LDL-C) lowering beyond that achieved with maximally tolerated statins.ObjectiveTo assess potential differences between the efficacy and safety of the proprotein convertase subtilisin/kexin type 9 inhibitor, alirocumab, in patients with vs without prior myocardial infarction (MI)/ischemic stroke.MethodsData (n = 4880) were pooled from nine ODYSSEY phase 3 trials of alirocumab 75/150 mg or 150 mg every 2 weeks, mostly on background statins ± other lipid-lowering therapies. Analyses were performed according to statin status, alirocumab dose, and control (placebo or ezetimibe).ResultsBaseline LDL-C, non-high-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and apolipoprotein B levels were lower and lipoprotein(a) higher in patients with than without prior MI/ischemic stroke. LDL-C levels were reduced from baseline to week 24 in patients with (51.1%-62.9%) and without (43.6%-58.3%) prior MI/ischemic stroke, with no significant interaction between prior MI/ischemic stroke status and LDL-C-lowering efficacy of alirocumab vs controls. Alirocumab significantly reduced other lipid/lipoproteins (including lipoprotein[a]) similarly in patients with/without MI/ischemic stroke. Week 24 LDL-C goal attainment rates for subgroups with/without prior MI/ischemic stroke on background statins were 74.1%-84.8% and 63.7%-74.7%, respectively. The safety profile of alirocumab was generally similar regardless of prior MI/ischemic stroke status.ConclusionsAlirocumab significantly reduced LDL-C and other atherogenic lipids/lipoproteins in patients with prior MI/ischemic stroke, and the majority of this very high cardiovascular risk population achieved LDL-C goals; efficacy and safety results were similar in patients without prior MI/ischemic stroke.Copyright © 2019. Published by Elsevier Inc.
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