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FDA Grants Priority Review for Amgen’s sBLA for Repatha to Include Data on Reduced Risk for Cardiovascular Events

By Amgen | August 1, 2017

 Amgen announced that the U.S. Food and Drug Administration (FDA) has granted priority review for Amgen’s supplemental Biologics License Application (sBLA) for Repatha® (evolocumab), a PCSK9 inhibitor. If approved by the FDA, the U.S. Prescribing Information for Repatha will be updated to include risk reduction of major cardiovascular events based on data from the large cardiovascular outcomes study (FOURIER). The FDA has set a Prescription Drug User Fee Act (PDUFA) action date of Dec. 2, 2017.

“The FDA’s decision to grant priority review for the Repatha cardiovascular outcomes data highlights the urgency to address the need to reduce heart attacks and strokes in high-risk patients who struggle to lower their LDL cholesterol,” said Sean E. Harper, M.D., executive vice president of Research and Development at Amgen. “We look forward to working with the FDA to update the label for Repatha enabling us to more broadly educate physicians and patients of the proven impact of Repatha to reduce cardiovascular events.”

Priority review is assigned to applications for drugs that treat serious conditions and would, if approved, provide significant improvements in the safety or effectiveness of the treatment, diagnosis or prevention of serious conditions.

A second application seeking to expand the lipid-lowering indication to include additional patient populations studied was also accepted by the FDA.

The 27,564-patient Repatha cardiovascular outcomes study (FOURIER) demonstrated that adding Repatha to optimized statin therapy resulted in a statistically significant 20 percent (p<0.001) reduction in hard major adverse cardiovascular events (MACE) represented in the composite (secondary) endpoint of time to first heart attack, stroke or cardiovascular death. The study found a statistically significant 15 percent reduction (p<0.001) in the risk of the extended MACE composite (primary) endpoint, which included hospitalization for unstable angina, coronary revascularization, heart attack, stroke or cardiovascular death.

The magnitude of risk reduction in both the primary and secondary composite endpoints grew over time, with the robust benefit starting as early as six months and accruing through the median 2.2 years of the study. For the secondary composite endpoint, an exploratory analysis showed a reduction in risk of 16 percent in the first year and 25 percent beyond the first year.

Patients on Repatha experienced a reduction in the risk of heart attack (27 percent, nominal p<0.001), stroke (21 percent, nominal p=0.01) and coronary revascularization (22 percent, nominal p<0.001). Consistent with recent trials of more intensive LDL lowering, there was no observed effect on cardiovascular mortality.1-5 Similarly, there was no observed effect on hospitalization for unstable angina.

No new safety concerns were identified in this large clinical trial with roughly 60,000 patient-years of follow-up; this included the assessment of patients who achieved very low levels of LDL-C. In particular, there were no notable differences seen between treatment arms in the overall rate of adverse events, serious adverse events or adverse events leading to study drug discontinuation. These results were presented during a Late-Breaking Clinical Trials Session at the American College of Cardiology 66th Annual Scientific Session (ACC.17) and simultaneously published in the New England Journal of Medicine.6


Filed Under: Drug Discovery

 

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