Merck Mulls Anacetrapib NDA After Mixed Study

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Responding to varying results in the REVEAL study of anacetrapib, Merck’s investigational cholesteryl ester transfer protein inhibitor, the company says it is reviewing the trial results with external experts and considering whether to submit an NDA to FDA. The study of 30,449 patients with atherosclerotic vascular disease receiving treatment with Pfizer’s Lipitor (atorvastatin) found that anacetrapib reduced the risk of major coronary events by 9% relative to placebo. However, a Merck statement says, a sub-study also showed that anacetrapib accumulates in adipose tissue with prolonged dosing.

Company officials say the benefit of adding anacetrapib to Lipitor was observed across multiple pre-specified subgroups. There were no statistically significant differences in cause-specific mortality, cancer, or other serious adverse events. And while the drug produced small increases in systolic and diastolic blood pressure, there was no statistically significant increase of serious adverse events attributed to hypertension.

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