Shares of drugmaker Sarepta Therapeutics surged in afterhours trading Monday after the company said it would resume shipping its gene therapy.

As the controversy over the safety of Sarepta Therapeutics’ gene therapies comes to a head, the biotech is standing firm behind its approved Duchenne muscular dystrophy (DMD) treatment. | As the controversy over the safety of Sarepta Therapeutics’ gene therapies comes to a head,

Sarepta Therapeutics said on Monday it will resume shipping of its gene therapy Elevidys to patients with a rare muscular disorder who can walk, after the FDA recommended the removal of a voluntary hold that was placed on the therapy.