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Current Opinion in Cardiology:
doi: 10.1097/HCO.0b013e328362059d
CLINICAL TRIALS: Edited by Harvey D. White

Recent clinical trials evaluating benefit of drug therapy for modification of HDL cholesterol

Wright, R. Scott

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Purpose of review: To highlight the recent data evaluating pharmacological manipulation of HDL cholesterol (HDL-C) and examine whether medication-induced changes were associated with improved clinical outcomes and reduced short-term and long-term cardiovascular risks. The review focuses on the studies with niacin and the new cholesteryl ester transfer protein (CETP) inhibitors torcetrapib, dalcetrapib, anacetrapib and evacetrapib.

Recent findings: Several large randomized clinical trials have evaluated drug therapy on HDL-C and cardiovascular outcomes. Two studies have evaluated the clinical outcomes following HDL-C raising with niacin. Data from the Heart Protection 2 Treatment of HDL to Reduce the Incidence of Vascular Events and The Atherothrombosis Intervention in Metabolic Syndrome with Low HDL/High Triglycerides: Impact on Global Health trials both demonstrated no clinical benefit from use of niacin therapy when added to background statin therapy with regard to short-term and long-term cardiovascular risk reduction. Both studies demonstrated excess side-effects from use of niacin. A number of clinical trials have evaluated HDL-C modification from use of a CETP inhibitor. All of the studies have demonstrated significant increases in HDL-C. To date, the outcome data are not favorable. Use of torcetrapib was associated with excess mortality. Use of dalcetrapib had no effect on short-term and long-term cardiovascular events. Two outcome studies with anacetrapib and evacetrapib are ongoing and will report out in a few years’ time.

Summary: Pharmacological manipulation of HDL-C has not improved the cardiovascular outcomes. Several agents have caused harm or unacceptable side-effects. Further studies are needed before one can recommend the use of additional lipid-modifying therapies beyond statins.

© 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins


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