Wall Street was weighing the gravity of the death from acute liver failure of a patient who was treated for Duchenne muscular dystrophy (DMD) with Sarepta Therapeutics Inc.’s gene therapy, Elevidys (delandistrogene moxeparvovec). Liver injury is a known possible side effect of the product, first approved by the U.S. FDA in June 2023 for DMD, as well as other AAV-mediated gene therapies, and the potential problem is highlighted in Elevidys’ prescribing information.

In work conducted by Jining Medical University investigators, synthesis and optimization of a previously reported ATP-competitive pyrrolo[2,3-b]pyridine-based glycogen synthase kinase 3β (GSK-3β) inhibitor led to the discovery of compound [I], a candidate with significant inhibitory activity on GSK-3β (IC50=0.35 nM), with its inhibitory effect being approximately 12-fold greater than that of broad-spectrum GSK-3β inhibitor staurosporine and 189-fold greater than that of the parent compound.

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.

Inclusion body myositis (IBM) is an inflammatory myopathy causing proximal and distal muscle weakness. IBM’s cause remains unknown, lacking validated models, biomarkers and effective treatment strategies. Histopathological studies identified inflammatory infiltrates, rimmed vacuoles, and mitochondrial changes in the muscles of IBM patients.

Iqure Pharma Inc. has received institutional review board (IRB) approval for a first-in-human study of iQ-007 in healthy volunteers. This follows recent formal approval from the Human Research Ethics Committee (HREC) in Australia for the phase I study, which is expected to begin next month.

Maxion Therapeutics Ltd. has raised $72 million (£58 million) in a series A financing to support its development of antibody-based Knotbody drugs for ion channel- and G protein-coupled receptor (GPCR)-driven diseases.

A combination of Epstein-Barr virus (EBV) antibodies and genetic factors may be linked to an increased risk of multiple sclerosis (MS), according to a study led by scientists at Karolinska Institutet and Stanford University. “The Epstein-Barr virus has been a suspect for many years for having a role in causing MS. The evidence for it has increased though one has not really reached complete proof of its role,” Tomas Olsson told BioWorld.

Bristol Myers Squibb Co.’s decision this week to snag Bluebird Bio Inc. spinout 2seventy Bio Inc. for $102 million net – just weeks after investors bid $30 million for Bluebird itself – seemed to place a final blow on what was once a promising gene therapy company. The space in general has struggled to make business sense out of the one-time therapies that often involve complicated manufacturing and exorbitant prices, despite the life-changing value that gene therapies bring to patients. But despite some recent setbacks, biopharmas continue to plow forward with promising research in the field.