More Data Requested to Lift Hold on Solid Duchenne Drug

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FDA is requesting additional data and manufacturing information from Solid Biosciences to potentially lift a clinical hold on the company’s Phase 1-2 IGNITE DMD clinical trial that is evaluating SGT-001 in Duchenne muscular dystrophy. The hold was originally placed 11/2019 after the company reported a serious adverse event that occurred in the sixth patient dosed in the trial. In April, Solid says it provided FDA with information and measures intended to improve patient safety and in May, Solid received written communication that the trial remained on hold. Last month, the company submitted a response that provided data related to manufacturing process improvements. FDA has now responded by maintaining the clinical hold and requesting further manufacturing information, updated safety and efficacy data for all patients dosed, and providing direction on total viral load to be administered per patient. Solid says it is evaluating next steps and will provide an update at a later date.

 

SGT-001 is described by the company as a novel adeno-associated viral (AAV) vector-mediated gene transfer therapy designed to address the underlying genetic cause of Duchenne muscular dystrophy. It is designed to deliver a synthetic dystrophin gene called microdystrophin to the body. “This microdystrophin encodes for a functional protein surrogate that is expressed in muscles and stabilizes essential associated proteins, including neuronal nitric oxide synthase,” Solid says. “Data from Solid’s preclinical program suggest that SGT-001 has the potential to slow or stop the progression of Duchenne, regardless of genetic mutation or disease stage.”

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