U.S. regulators asked Sarepta Therapeutics on Friday to voluntarily halt shipments of its Elevidys gene therapy after a muscular dystrophy patient who received a different, experimental treatment died,

Drugmaker Sarepta Therapeutics says it won’t comply with a request from U.S. regulators to halt all shipments of its gene therapy.

Sarepta Therapeutics Inc. has refused to pause all shipments of its Elevidys treatment after three deaths were linked to the company’s gene therapies, the Food and Drug Administration said Friday.