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Lipid-altering efficacy and safety of ezetimibe/simvastatin coadministered with extended-release niacin in patients with type IIa or type IIb hyperlipidemia.

Author(s): Guyton JR, Brown BG, Fazio S, Polis A, Tomassini JE, Tershakovec AM

Affiliation(s): Department of Medicine, Duke University Medical Center, Durham, North Carolina 27710, USA. guyto001@mc.duke.edu

Publication date & source: 2008-04-22, J Am Coll Cardiol., 51(16):1564-72.

Publication type: Clinical Trial; Multicenter Study; Randomized Controlled Trial

OBJECTIVES: This study evaluated the safety and lipid-altering efficacy of ezetimibe/simvastatin (E/S) coadministered with extended-release niacin (N) in patients with type IIa or IIb hyperlipidemia. BACKGROUND: Current guidelines recommend consideration of combination drug therapy to achieve optimal low-density lipoprotein cholesterol (LDL-C) lowering and broader lipid-altering effects when treating hypercholesterolemic patients at high risk for atherosclerotic cardiovascular events. METHODS: In this 24-week multicenter, randomized, double-blind study, 1,220 type IIa or IIb hyperlipidemic patients were randomized to treatment with E/S (10/20 mg/day) + N (titrated to 2 g/day), or N (titrated to 2 g/day), or E/S (10/20 mg/day). Changes from baseline in LDL-C (primary) and other secondary variables were assessed in the completers and modified intent-to-treat populations. RESULTS: Coadministered E/S with N resulted in significantly greater reductions in LDL-C, non-high-density lipoprotein cholesterol, triglycerides, apolipoprotein B, and lipid/lipoprotein ratios, compared with either agent alone (p < 0.001). The combination increased levels of apolipoprotein A-I and high-density lipoprotein cholesterol significantly more than E/S (p < 0.001), and reduced high-sensitivity C-reactive protein levels significantly more than N (p = 0.005). A significantly greater percentage of patients discontinued the study in the N (25.0%) and N + E/S (23.3%) groups, compared with E/S (9.6%, p < 0.001) because of clinical adverse experiences (primarily flushing). Incidences of other clinical and laboratory adverse experiences (liver-, muscle-, and gastrointestinal-related) were similar for all groups. CONCLUSIONS: Combination treatment with E/S plus N showed superior lipid-altering efficacy compared with N or E/S in type IIa or IIb hyperlipidemia patients and was generally well tolerated aside from N-associated flushing. This combination offers an effective, broad, lipid-altering therapy with improvements in lipid effects beyond LDL-C in these patients. (To Evaluate Ezetimibe/Simvastatin and Niacin [Extended Release Tablet] in Patients With High Cholesterol.

Page last updated: 2008-06-22

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