Gene therapy
UniQure and REGENXBIO are both dealing with FDA setbacks for their respective gene therapies, as regulatory experts question the FDA’s decision-making processes; CBER director Vinay Prasad is under probe for allegedly fostering a toxic workplace; Sarepta CEO Doug Ingram is stepping down after several years of tumult at the top of the muscular dystrophy–focused company; and Eli Lilly again tops Novo Nordisk in a weight loss trial.
The FDA last October paused Intellia Therapeutics’ late-stage CRISPR studies after detecting life-threatening enzyme elevations in one patient, who died a few days later.
In a complete response letter published by the FDA on Monday, the agency said a resubmission for REGENXBIO’s Hunter syndrome gene therapy should provide evidence of normalized or improved biomarker levels or neurodevelopmental outcomes.
Days after FDA Commissioner Marty Makary appeared to malign uniQure’s AMT-130 in an interview with CNBC, the agency confirmed to the biotech that a sham surgery–controlled study is needed before submitting the gene therapy for approval.
On the FDA’s docket this month are two decisions pushed back from 2025, including one for a rare form of obesity and another for dry eye disease.
After a rocky 2025, Sarepta Therapeutics’ executives admit they have work to do to bring patients back into the fold as sales of Duchenne muscular dystrophy gene therapy Elevidys continue to decline.
Regulators overseeing rare disease treatments need better tools to weigh competing risks in real time. Sarepta Therapeutics’ Elevidys is a prime example of why.
A lower court had previously ruled for Sarepta in the companies’ long-running dispute, finding that REGENXBIO’s AAV patent was invalid because its elements were naturally occurring. The appeals court on Friday said that this original decision adopts a “narrow” view of the invention.
The first gene therapies approved to treat sickle cell disease in December 2023 are struggling on the market. But there are glimpses of forward momentum as Vertex and Genetix Bio provide updates.
The FDA’s refusal to review Moderna’s mRNA-based flu vaccine is “part of a disturbing pattern” of moving regulatory goalposts, according to Clay Alspach, executive director of the Alliance for mRNA Medicines. Meanwhile, streamlined communications with regulators in other countries pave the way for rapid uptake of novel modalities.
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