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 shares snapped a three-day losing streak on Tuesday, as analysts said resumption of U.S. shipments for its muscular gene therapy soothes immediate concerns about liquidity and the therapy's withdrawal from the market.