FDA Clinical Hold on Reneneron/Teva Back Pain Drug

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FDA has placed a clinical hold on a Regeneron Pharmaceuticals and Teva Pharmaceutical Industries Phase 2b clinical trial of fasinumab in patients with chronic low back pain. Fasinumab is an investigational Nerve Growth Factor (NGF) antibody in clinical development for osteoarthritis pain and chronic low back pain.

The agency’s hold requests a change in the study protocol after observing a case of adjudicated arthropathy in a patient receiving high dose fasinumab who had advanced osteoarthritis at study entry. “As a result of the FDA decision, Regeneron completed an unplanned interim review of results and has stopped dosing in the study,” the companies say. “The unplanned analysis showed clear evidence of efficacy with improvement in pain scores in all fasinumab groups compared to placebo at the eight-and 12-week time points (nominal p less than 0.01). Preliminary safety results are generally consistent with what has been previously reported with the class. The Phase 2b chronic low back pain study enrolled approximately 70% of the targeted 800 patients in four dose groups: placebo, 6mg subcutaneously monthly, 9mg subcutaneously monthly and 9mg intravenously every two months.”

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