Sarepta Therapeutics suffered another major setback on Friday as Europe's drug regulator decided not to recommend the approval of Elevidys, following mounting regulatory scrutiny and two recent patient deaths linked to the company's gene therapy.

Sarepta Therapeutics (NASDAQ:SRPT) shares plummeted on Friday following reports of a third patient death linked to its gene therapy pipeline this year, further clouding investor confidence despite the company’s recent efforts to provide clarity on its restructuring and FDA label plans.

The European Medicines Agency determined testing failed to prove Elevidys’ benefit and issued a negative opinion that could further jeopardize Sarepta’s financial future.