WASHINGTON —

The Food and Drug Administration said Friday it will add a new warning and other limitations to a gene therapy for Duchenne’s muscular dystrophy that's been linked to two patient deaths.

The infused therapy from Sarepta Therapeutics will carry a boxed warning — the most serious type — alerting doctors and patients to the risk of potentially fatal liver failure with the treatment, the FDA said in a release.

The one-time therapy, Elevidys, has been under FDA scrutiny since the company reported the first of two deaths of teenage boys in March. Following a second death reported in June, the FDA briefly called for halting all shipments of the drug. But the agency quickly reversed course after facing pushback from patient families and libertarian activists close to President Dona

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