As mothers of children with this disease, we have wept helplessly in recent months as friends — fellow members of a club we never asked to join — said goodbye to their sons, the babies they once held in their arms, whose dreams they held in their hearts until Duchenne robbed them of working muscles or a healthy future.

Sarepta Therapeutics lays off 493 workers amid FDA probe, stock drop, and concerns over its gene therapy treatment, Elevidys.

Shares of Sarepta Therapeutics plunged more than 30% on Friday as the future of its approved gene therapy appeared at risk. Sarepta has reported three patient deaths related to its gene therapies.

The FDA will request Sarepta Therapeutics stop all shipments of Elevidys, its gene therapy for Duchenne muscular dystrophy, following two deaths tied to the product.

The drop comes the day after the drugmaker said it would add a so-called black-box warning to its gene therapy Elevidys after two teenage boys receiving the treatment died earlier this year.

Key Takeaways Sarepta Therapeutics shares were down nearly 25% early Friday morning.The tumble followed a report that a third patient has died during a clinical trial for its Elevidys drug that treats muscular dystrophy.

Stocks on Sky High. Sarepta Therapeutics, Inc. (NASDAQ:SRPT) is one of the top-performing companies on Thursday. Sarepta Therapeutics saw its share prices rise by 19.53 percent on Thursday to close at $21.

Sarepta Therapeutics shares surged 34% in after-hours trading on Wednesday after the company said it would slash 500 jobs, or 36% of its workforce, as part of its restructuring plan. The move is expected to decrease costs by $400 million annually starting in 2026,