Sarepta Therapeutics Inc. shares rose sharply early Tuesday after US regulators reversed course and recommended that patients who can walk be allowed to take its gene therapy Elevidys again.

Sarepta Therapeutics said on Monday it will resume shipping of its muscular disorder gene therapy to patients who can walk, sending the company's shares 59% higher in extended trading.

Monday, the FDA said Sarepta may resume treating ambulatory DMD patients with Elevidys. The recommendation comes just 10 days after the agency requested that the company halt all shipments of the one-time treatment following reports of three deaths among patients who had received a Sarepta gene therapy, including two on Elevidys.