Pfizer Duchene Gene Therapy Fails Phase 3 Study
Pfizer says that its Phase 3 CIFFREO placebo-controlled study evaluating an investigational mini-dystrophin gene therapy, fordadistrogene movaparvovec, in ambulatory patients with Duchenne muscular dystrophy did not meet its primary endpoint of improvement in motor function.
The primary endpoint was assessed by the change in the North Star Ambulatory Assessment at one year after treatment, according to Pfizer. “Key secondary endpoints, including 10-meter run/walk velocity and time to rise from floor velocity, also did not show a significant difference between participants treated with fordadistrogene movaparvovec and placebo,” it says. Pfizer notes that the overall safety profile was “manageable, with mostly mild to moderate adverse events, and treatment-related serious adverse events generally responding to clinical management.”
The company plans to share more detailed study results at upcoming medical meetings, and it is evaluating “appropriate next steps” for the program.