Sarcopenia is an age-related condition in which muscle mass and strength decrease, leading to reduced overall physical performance. As fast-twitch muscle fibers are more impacted by age-related decline, strategies aimed at enhancing the regeneration and functionality of these fibers are essential to prevent the progression of sarcopenia.

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.

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.

The pairing of Mallinckrodt plc and Endo Inc. is expected to create a pharma heavyweight that will generate $3.6 billion in 2025 revenue after the duo combines their generic pharmaceuticals businesses and Endo’s sterile injectables setup. Terms call for Dublin-based Endo shareholders to collect $80 million in cash and own 49.9% of the combined firm. Owners of stock in Mallinckrodt will hold the rest of the new entity in the arrangement, which bears an enterprise value of $6.7 billion and is expected to close in the second half of this year.

After scrapping plans for an IPO in 2022, Hinge Health Inc. is taking a more favorable view of going public given the increased support seen for health care and med-tech stocks in recent months. The San Francisco-based company, a digital provider of physical therapy services, filed a form S-1 with the U.S. SEC stating it plans to offer an unspecified number of shares of class A common stock on the New York Stock Exchange this year.

For the first time, researchers have identified that inflammation – long associated with multiple sclerosis (MS) – appears to cause increased mutations that damage neurons linked to MS progression. Researchers at the Florey Institute and the University of Melbourne studied MS brain lesions, which are areas of past or ongoing brain inflammation that are visible as spots on MRI scans.