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.

The death of a 51-year-old man in the study follows two other deaths of Duchenne patients treated with Sarepta’s marketed gene therapy Elevidys.

Shares of Sarepta Therapeutics (NASDAQ: SRPT) plunged 26.85% in Friday pre-market after a clinical trial participant died following treatment with a gene therapy, marking the third death linked to the company's experimental treatments.

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 drastic cost-cutting move follows the deaths of two teenagers that forced the company to restrict usage of its gene therapy for Duchenne muscular dystrophy.

Investing.com -- Sarepta Therapeutics (NASDAQ: SRPT) stock soared 36% in after-hours trading Wednesday after the biotech company announced a major strategic restructuring plan designed to ensure long-term financial sustainability while focusing on high-impact programs.

Sarepta Therapeutics, Inc. (NASDAQ:SRPT) is one of the 10 Best Small-Cap Stocks to Buy According to Billionaires. On July 10, JPMorgan lowered its price target for Sarepta Therapeutics, Inc. (NASDAQ:SRPT) from $30 to $28 but kept an “Overweight” rating.