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  • Title: Icosapent ethyl: Eicosapentaenoic acid concentration and triglyceride-lowering effects across clinical studies.
    Author: Bays HE, Ballantyne CM, Doyle RT, Juliano RA, Philip S.
    Journal: Prostaglandins Other Lipid Mediat; 2016 Sep; 125():57-64. PubMed ID: 27418543.
    Abstract:
    Icosapent ethyl is a high-purity prescription form of eicosapentaenoic acid (EPA) ethyl ester approved at a dose of 4g/day as an adjunct to diet to reduce triglyceride (TG) levels in adult patients with severe (≥500mg/dL) hypertriglyceridemia. This post-hoc exploratory analysis examined the relationship of icosapent ethyl dose with EPA concentrations in plasma and red blood cells (RBCs) across 3 clinical studies-a phase 1 pharmacokinetic study in healthy adult volunteers and 2 pivotal phase 3 studies (MARINE and ANCHOR) in adult patients with hypertriglyceridemia-and examined the relationship between EPA levels and TG-lowering effects in MARINE and ANCHOR. In all 3 studies, icosapent ethyl produced dose-dependent increases in the concentrations of EPA in plasma and RBCs. In both MARINE and ANCHOR, these dose-dependent EPA increases correlated with the degree of TG level lowering (all P<0.01). In patients with high TG levels (≥200mg/dL) and treated with icosapent ethyl 4g/day, the end-of-treatment plasma and RBC EPA concentrations were >170μg/mL and>70μg/mL, respectively. These studies support icosapent ethyl as producing predictable dose-dependent pharmacokinetics/pharmacodynamics, with TG level lowering dependent upon icosapent ethyl dose and EPA concentrations in plasma and RBCs.
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