07:34 AM EDT, 06/21/2024 (MT Newswires) -- Sarepta Therapeutics ( SRPT ) shares surged almost 37% Friday premarket after the company secured an expanded US Food and Drug Administration approval for the company's gene therapy for Duchenne muscular dystrophy.

Barinthus Biotherapeutics ( BRNS ) shares rose more than 13%, rebounding from Thursday's slump.

Solid Biosciences ( SLDB ) shares increased 13% following a 7.4% drop in the previous session.

Gilead Sciences ( GILD ) shares were 3% higher, extending gains from the previous session after the company said its experimental HIV shot was 100% effective in a late-stage trial.

Price: 168.99, Change: +45.49, Percent Change: +36.83