The debate over Sarepta Therapeutics Inc.’s gene transfer therapy, SRP-9001 (delandistrogene moxeparvovec), in Duchenne muscular dystrophy (DMD) proved as thorny as expected during a closely watched meeting of the U.S. FDA’s Cellular, Tissue and Gene Therapies Advisory Committee. Panelists voted on a single question: “Do the overall considerations of benefit and risk, taking into account the existing uncertainties, support accelerated approval of SRP-9001, using as a surrogate endpoint expression of Sarepta’s microdystrophin at week 12 after administration, for the treatment of ambulatory patients with DMD with a confirmed mutation in the DMD gene?” Balloting turned out 8 yes, 6 no.

How grave they might be remains unknown, but regulatory questions have surfaced in briefing documents related to the soon-to-happen panel meeting on Sarepta Therapeutics Inc.’s gene transfer therapy delandistrogene moxeparvovec in Duchenne muscular dystrophy (DMD). The U.S. FDA’s Cellular, Tissue and Gene Therapies Advisory Committee will meet May 12 to discuss the compound, also known as SRP-9001.

Despite the approval of Biogen Inc.’s Qalsody (tofersen) for treating amyotrophic lateral sclerosis (ALS), there are still hurdles for the drug to clear, including a confirmatory study and setting a price. Because the U.S. FDA granted Qalsody accelerated, not full approval, there are plenty more data to collect in the ongoing confirmatory phase III Atlas study of those who develop ALS symptoms during the trial compared to placebo. The randomized, double-blind, placebo-controlled study is being conducted with those carrying the superoxide dismutase 1 gene genetic mutation but are symptom free.

A twisted, uncertain path has led to a U.S. FDA approval for Biogen Inc.’s Qalsody (tofersen), the first drug targeting a genetic cause of amyotrophic lateral sclerosis (ALS). Qalsody is for ALS associated with a mutation in the superoxide dismutase 1 (SOD1) gene. Patients with SOD-1 mutations account for 2% of ALS cases.

Dupuytren’s disease is often referred to as “the most common crippling hand condition that people have never heard of,” but Kurt Harrington is on a mission to change that. A seasoned biotech and pharma consultant, Harrington has had the condition himself for over a decade and, acutely aware of the lack of available treatment options, has founded Ventoux Biosciences Inc. to bring additional therapies forward.

The editing in human cells and in mice of the survival motor neuron 1 gene (SMN1) restored the levels of SMN protein that the mutation of the SMN2 gene produces in spinal muscular atrophy. Scientists from the Broad Institute in Boston and The Ohio State University reversed the mutation using the base editing technique.

Partially blocking a receptor that helps regulate the activity of the inflammatory cytokine molecule interleukin-6 (IL-6) seems to promote tissue regeneration and block degeneration in a model of osteoarthritis. As reported in the March 22, 2023, issue of Science Translational Medicine, the receptor, called glycoprotein 130 (gp130), regulates both positive and negative inflammatory responses that can help regenerate tissue, but also cause degeneration.

Tofersen’s development is progressing in fits and starts. That was evident at the U.S. FDA’s March 22 meeting of the Peripheral and Central Nervous System Drugs Advisory Committee, which unanimously agreed Biogen Inc.’s failed phase III study predicted a clinical benefit in treating amyotophic lateral sclerosis (ALS) that includes the rare superoxide dismutase 1 component.