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Phase III trial of Kyprolis in Multiple Myeloma meets primary endpoint-Amgen/Onyx Pharma

Read time: 1 mins
Last updated:3rd Mar 2015
Published:3rd Mar 2015
Source: Pharmawand

Amgen and subsidiary Onyx Pharmaceuticals have announced the results from a planned interim analysis showing that the Phase III head-to-head clinical trial ENDEAVOR evaluating Kyprolis (carfilzomib) for Injection in combination with low-dose dexamethasone versus Velcade (bortezomib) and low-dose dexamethasone met the primary endpoint of progression-free survival (PFS). Patients with relapsed multiple myeloma treated with Kyprolis lived twice as long without their disease worsening, demonstrating statistically and clinically significant superiority over Velcade (median PFS 18.7 months versus 9.4 months).

The Kyprolis combination demonstrated superiority over the Velcade combination for secondary objectives of higher overall response rate and lower neuropathy events. Overall survival data are not yet mature and continue to be monitored. Treatment discontinuation due to adverse events and on-study deaths were comparable between the two arms. The rates of cardiac failure and renal failure for Kyprolis were comparable to those observed in the Phase III ASPIRE study.

In ENDEAVOR, the rates for cardiac and renal failure were higher in the Kyprolis arm versus the Velcade arm. There was an increase in the incidence of hypertension and dyspnea in the Kyprolis arm compared to Velcade and that observed in the ASPIRE study. Full data will be submitted for presentation at the American Society of Clinical Oncology 2015 Annual Meeting.

Comment: The ENDEAVOUR trial could establish Kyprolis as the leading drug in its class and support Amgen applications for second line use.

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