Abstract
IntroductionWhen a standard dose of statins fails to achieve lipid control in patients at high risk for coronary artery disease (CAD), increasing the statin dosage or co-administration of additional agents is recommended. The aim of this study was to compare the safety and lipid-lowering efficacy of doubling the standard statin dose (STAT2) to that of co-administering ezetimibe 10 mg/day (EZE+statin) in Canadian patients at high CAD risk with persistent hyperlipidemia upon statin treatment.Material and methodsSix-week, open-label, randomized, multicentre study. The primary outcome was the change in plasma LDL-C and secondary measures included the change in additional lipid parameters. Safety was assessed with the incidence of emergent adverse events (AEs).ResultsEight hundred eighty-five patients (EZE+statin, n=586; STAT2, n=299) completed the study. The mean (SD) percent change in low-density lipoprotein cholesterol (LDL-C) was – 30.9% (18.2) for the EZE+statin group and –18.4% (19.0) for the STAT2 group (p=0.001). Percent and absolute decreases in total cholesterol (TC), triglycerides and the TC to high-density lipoprotein cholesterol ratio (TC/HDL-C) were significantly greater for the EZE+statin group (p = 0.001). After 6 weeks of treatment, 70% of the patients in the EZE+statin group and 48% of patients in the STAT2 group (OR=2.45, p<0.001) achieved target LDL-C levels of<2.5 mmol/l. Incidence of AEs was similar between groups, with the exception of a higher incidence of muscle disorders in the STAT2 group.ConclusionsIn patients at high CAD risk who are above the LDL-C target while on statin monotherapy, co-administration of ezetimibe is well tolerated and more effective in improving the lipid profile compared to doubling the existing statin dose.
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