PPMD is pleased to share that Sarepta Therapeutics plans to initiate Part B of the MOMENTUM study of SRP-5051 in patients with Duchenne muscular dystrophy following positive interactions with the U.S. Food and Drug Administration (FDA). The Company plans to initiate Part B of the MOMENTUM study (Study 5051-201) in Q4 2021. MOMENTUM is a global trial investigating the use of SRP-5051, the Company’s next-generation peptide-conjugated phosphorodiamidate morpholino oligomer (PPMO) to treat patients with Duchenne muscular dystrophy who are amenable to exon 51 skipping.

Earlier this year, the Company announced results from Part A of the MOMENTUM study 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 will include magnesium supplementation and monitoring of magnesium levels.

The study will enroll between 20-40 patients between ages 7 to 21 amenable to exon 51 skipping who are naïve to SRP-5051. Additionally, those previously dosed in Study 5051-201, Part A or Study 5051-102 who meet the entrance criteria will be eligible to participate. Both ambulatory and non-ambulatory patients are eligible for participation. The Company will submit the protocol in the next week.

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