AAV-based therapies for Duchenne muscular dystrophy (DMD) have shown efficacy, but have limitations such as poor delivery to target tissues and toxicity associated with the vector. Gemma Biotherapeutics Inc. has developed a gene therapy candidate, GB-703, which uses a new myotropic, integrin-binding AAV capsid containing a codon-optimized, deimmunized hybrid payload.
A lower-than-expected increase in dystrophin over baseline in the first and lowest-dose cohort of a phase I/II study of ENTR-601-44 in Duchenne muscular dystrophy (DMD) caused shares of Entrada Therapeutics Inc. to plunge more than 57%, despite the cohort meeting the safety and tolerability primary objective.
While data on functional endpoints are still to come, Avidity Biosciences Inc. executives said the firm is moving ahead with plans for a BLA filing by the end of 2025 for del-zota, an antibody-oligonucleotide conjugate, in Duchenne muscular dystrophy with mutations amenable to exon 44 skipping (DMD44), based on positive top-line data that analysts say bode well for Avidity’s other late-stage programs targeting rare neuromuscular diseases.
Solid Biosciences Inc. is preparing for a sit-down with the U.S. FDA this year to discuss the firm’s results with the next-generation gene therapy SGT-003 for Duchenne muscular dystrophy (DMD).
Interim phase II data of Wave Life Sciences Ltd.’s oligonucleotide, WVE-N531, revealed “impressive” dystrophin expression, solid safety and the potential for once-monthly dosing for boys with Duchenne muscular dystrophy who are amenable to exon 53 skipping. The findings drove Wave Life’s stock (NASDAQ:WVE) up by 53.4%, or $2.85, to close Sept. 24 at $8.19, after peaking earlier in the day at $8.35, its 52-week high.
Shares of Dyne Therapeutics Inc. (NASDAQ:DYN) closed May 20 at $35.38, up $7.70, or 28%, on word of positive data from the phase I/II Achieve trial of DYNE-101 in myotonic dystrophy type 1 (DM1) and the phase I/II Deliver effort with DYNE-251 in Duchenne muscular dystrophy (DMD) who are amenable to exon 51 skipping. CEO John Cox, who joined Waltham, Mass.-based Dyne eight weeks ago, said he “couldn’t be more proud to be part of this team.” Studies are ongoing, but new data with regard to DM1 as well as DMD showed a “compelling” impact, Dyne said, plus satisfying safety profiles.
A male patient who harbored a deletion in the intron 7-exon 8 region of the dystrophin gene, DMD, was showing symptoms that matched with Becker muscular dystrophy.
Sarepta Therapeutics Inc.’s next-generation peptide-conjugated PMO therapy, SRP-5051 (vesleteplirsen), looks set to stake its claim in the Duchenne muscular dystrophy (DMD) space, as phase II data unveiled dystrophin expression that outperforms first-generation exon-skipping drug Exondys 51 (eteplirsen). The question is what that space might look like in the wake of a U.S. FDA decision whether to expand labeling and convert to full approval Sarepta’s DMD gene therapy, Elevidys (delandistrogene moxeparvovec).
Tevard Biosciences Inc. has entered into a 4-year global research collaboration with Vertex Pharmaceuticals Inc. aimed at creating new tRNA-based therapies for patients with Duchenne muscular dystrophy (DMD) caused by nonsense mutations, with options to expand into additional muscular dystrophies and a second indication.
Sarepta Therapeutics Inc. said it plans to file a BLA for its gene therapy for Duchenne muscular dystrophy (DMD), SRP-9001, with the U.S. FDA, potentially setting up a decision in the first half of 2023 for the therapy developed in partnership with Switzerland’s Roche Holding AG. The Cambridge, Mass.-based biotech said the BLA will seek accelerated approval for the therapy, also known as delandistrogene moxeparvovec, for ambulant individuals with DMD.
