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Ezetimibe/simvastatin 10/20 mg versus rosuvastatin 10 mg in high-risk hypercholesterolemic patients stratified by prior statin treatment potency.

Author(s): Viigimaa M, Vaverkova H, Farnier M, Averna M, Missault L, Hanson ME, Dong Q, Shah A, Brudi P

Affiliation(s): Tallinn University of Technology, Technomedicum, Ehitajate St, 5, 19086 Tallinn, Estonia. margus.viigimaa@regionaalhaigla.ee

Publication date & source: 2010-11-04, Lipids Health Dis., 9:127.

Publication type: Randomized Controlled Trial

OBJECTIVE: This post-hoc analysis compared the lipid-altering efficacy of Ezetimibe/Simvastatin 10/20 mg (EZ/Simva) versus Rosuvastatin 10 mg (Rosuva) in patients stratified by statin potency/dose prior to randomization. METHODS: Patients with elevated low-density lipoprotein cholesterol (LDL-C) despite prior statin treatment (n=618) were randomized 1:1 to EZ/Simva 10/20 mg or Rosuva 10 mg for 6 weeks. Percent change from baseline in lipids and attainment of lipid targets were assessed within each subgroup (low potency n=369, high potency n=249). Consistency of the treatment effect across subgroups was evaluated by testing for treatment-by-subgroup interaction. No multiplicity adjustments were made. RESULTS: Significant treatment-by-subgroup interaction occurred for LDL-C (p=0.013), total cholesterol (p=0.025), non-HDL-C (p=0.032), and apolipoprotein B (p=0.016) with greater between-treatment differences in favor of EZ/Simva observed in patients from the high potency stratum vs low potency stratum. Individual and triple target attainment was higher for Eze/Simva compared with Rosuva in both strata. CONCLUSIONS: Compared with Rosuva, switching to EZ/Simva provided greater reductions in LDL-C, total cholesterol, non-HDL-C and apolipoprotein B and higher target attainment in patients on prior statin treatment, regardless of potency, although patients treated with higher potency statins prior to randomization experienced greater between treatment differences in favor of EZ/Simva. TRIAL REGISTRATION: Registered at ClinicalTrials.gov: NCT00479713.

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