FDA removes clinical hold on phase II MOMENTUM trial of SRP 5051 in Duchenne muscular dystrophy
Sarepta Therapeutics announced that the FDA has removed the clinical hold on SRP 5051 (vesleteplirsen), the Company’s investigational, next-generation peptide-conjugated phosphorodiamidate morpholino oligomer (PPMO) to treat patients with Duchenne muscular dystrophy who are amenable to exon 51 skipping
After discussions with FDA and as part of the lift, Sarepta will adjust the global trial protocol to include expanded monitoring of urine biomarkers. The hold in Part B of Study 5051-201, also known as MOMENTUM, followed a serious adverse event of hypomagnesemia. Information was provided by the Company to FDA to assess the adequacy of the risk mitigation and safety monitoring plan.
MOMENTUM is a Phase II, multi-arm, ascending dose trial of SRP-5051, infused monthly and will assess dystrophin protein levels in skeletal muscle tissue following SRP-5051 treatment. The trial will enroll up to 60 participants, both ambulant and non-ambulant, between the ages of 7 to 21 at sites in the U.S., Canada, and the European Union. The trial will also assess safety and tolerability. In 2021, the Company announced results from Part A of MOMENTUM showing that after 12 weeks, 30 mg/kg of SRP-5051 dosed monthly resulted in 18 times the exon skipping and eight times the dystrophin production as eteplirsen, dosed weekly for 24 weeks. Reversible hypomagnesemia was identified in patients taking SRP-5051. The protocol for Part B of MOMENTUM includes magnesium supplementation and monitoring of magnesium levels.
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