Low-density lipoprotein cholesterol reduction and goal achievement with ezetimibe/simvastatin versus atorvastatin or rosuvastatin in patients with diabetes, metabolic syndrome, or neither disease, stratified by National Cholesterol Education Program risk category

Adam B Polis, Nicola Abate, Alberico L Catapano, Christie M Ballantyne, Michael H Davidson, Steven S Smugar, Andrew M Tershakovec
Metabolic Syndrome and related Disorders 2009, 7 (6): 601-10

BACKGROUND: Patients with diabetes mellitus (DM) and metabolic syndrome are at increased risk of coronary heart disease (CHD). Studies have shown differential statin efficacy on low-density lipid cholesterol (LDL-C) by CHD risk strata.

OBJECTIVE: The aim of this study was to evaluate the consistency of effect with ezetimibe/simvastatin (E/S) combination therapy, atorvastatin, or rosuvastatin in patients with DM, metabolic syndrome, or neither condition (No DM/metabolic syndrome), stratified by the National Cholesterol Education Panel Adult Treatment Panel III (NCEP ATP III) CHD risk group.

METHODS: Post hoc analyses of 2 multicenter, double-blind, randomized, 6-week studies comparing E/S 10/10, 10/20, 10/40, or 10/80 mg with either atorvastatin 10, 20, 40, or 80 mg, or rosuvastatin 10, 20, or 40 mg. Treatments were compared by pooling across all doses for LDL-C reduction and NCEP LDL-C goal attainment in patients with DM, metabolic syndrome without DM, or No DM/metabolic syndrome across NCEP CHD risk strata.

RESULTS: NCEP LDL-C goal attainment was lowest in the high-risk group with atherosclerotic vascular disease (12-64%) and greatest in the moderate and low-risk groups (84-100%). In contrast, LDL-C reduction was generally similar irrespective of disease or risk subgroup. All treatments were generally well tolerated, with overall similar safety regardless of disease and risk level.

CONCLUSIONS: In these studies, CHD risk strata were inversely related to the likelihood of attaining NCEP LDL-C goals, but did not appear to affect the percentage LDL-C change from baseline. This demonstrates the need for especially aggressive cholesterol lowering necessary to reach the lower LDL-C goal for high-risk patients.

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