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  • Title: Efficacy and safety of alirocumab, a monoclonal antibody to PCSK9, in statin-intolerant patients: design and rationale of ODYSSEY ALTERNATIVE, a randomized phase 3 trial.
    Author: Moriarty PM, Jacobson TA, Bruckert E, Thompson PD, Guyton JR, Baccara-Dinet MT, Gipe D.
    Journal: J Clin Lipidol; 2014; 8(6):554-561. PubMed ID: 25499937.
    Abstract:
    BACKGROUND: Statin intolerance has been a major limitation in the use of statins, especially at higher doses. New effective treatments are needed for lowering low-density lipoprotein cholesterol (LDL-C) in patients who cannot tolerate daily statin doses. OBJECTIVE: ODYSSEY ALTERNATIVE (NCT01709513) evaluates efficacy and safety of alirocumab, a fully human proprotein convertase subtilisin/kexin type 9 monoclonal antibody, in patients with well-documented statin intolerance and moderate to very high cardiovascular risk. METHODS: This is a phase 3, multicenter, randomized, double-blind, double-dummy study in statin-intolerant patients. Intolerance was defined as inability to take at least 2 different statins because of muscle-related adverse events (AEs), 1 at the lowest approved starting dose. Patients first received single-blind subcutaneous and oral placebo for 4 weeks, and were withdrawn if they developed muscle-related AEs after the placebo treatment. Continuing patients were randomized (2:2:1 ratio) to alirocumab 75 mg self-administered via single 1 mL prefilled pen every 2 weeks or ezetimibe 10 mg/day or atorvastatin 20 mg/day (statin rechallenge), for 24 weeks. Alirocumab dose was increased to 150 mg every 2 weeks (also 1 mL) at week 12 depending on week 8 LDL-C level. The primary endpoint is percent change in LDL-C from baseline to week 24 by intent-to-treat analysis. Muscle-related AEs were assessed by spontaneous patient reports and clinic queries. RESULTS: A total of 314 patients have been randomized. CONCLUSIONS: This is the first and only study of a new class of LDL-C-lowering agents in patients selected with a rigorously documented intolerance to statins, using a placebo run-in and statin control arm.
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