Durect Amending Posimir Trial After FDA Advice Letter

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Durect Corp. is amending its PERSIST Phase 3 trial for Posimir, an extended-release depot utilizing the company’s SABER technology designed to continuously deliver bupivacaine, based on recommendations in an FDA advice letter. One of the recommendations was to incorporate standard bupivacaine HCl as an active control. “This change will add to the time and cost to complete the PERSIST trial, but the company believes that a positive outcome from this trial design would result in a stronger NDA filing and potentially provide commercial advantages,” the company says. Durect notes that in cohort 2 of its BESST trial, which like PERSIST was in laparoscopic cholecystectomy patients, the control arm was also standard bupivacaine HCl and Posimir achieved a statistically significant pain reduction over 72 hours compared to the control.

PERSIST is a randomized, double-blind, parallel-group, multicenter trial designed to evaluate the safety and efficacy of Posimir for managing postoperative pain during the first three days after surgery. The primary efficacy endpoint is pain intensity on movement for 72 hours after surgery and the key secondary efficacy endpoint is the cumulative use of opioid rescue medication over 72 hours.

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