Sarepta Therapeutics(US:SRPT) ZACKSยท2025-07-21 16:21Core Insights - Shares of Sarepta Therapeutics (SRPT) fell 35.9% following the death of a patient in a trial for its gene therapy SRP-9004, which is aimed at treating limb-girdle muscular dystrophy (LGMD) Type 2D [1][9] - This incident marks the third patient death linked to Sarepta's gene therapies, with previous deaths occurring in non-ambulatory patients treated with Elevidys for Duchenne muscular dystrophy (DMD) [2][9] - The FDA has placed all of Sarepta's clinical studies for LGMD on hold and requested a halt to Elevidys shipments, which the company has refused, citing safety data [5][6][9] Company Developments - Sarepta has suspended Elevidys dosing for non-ambulatory patients and is considering enhanced immunosuppression to improve safety [3] - The company has lowered its net product revenue guidance for full-year 2025 to $2.3-$2.6 billion from $2.9-$3.1 billion due to safety concerns affecting drug uptake [4] - Sarepta announced a restructuring plan to cut 36% of its workforce, aiming for annual savings of $400 million by 2026 [13][15] Regulatory Actions - The FDA has revoked Sarepta's AAVrh74 platform technology designation, citing insufficient evidence to support its safety for multiple drugs [10] - The agency continues to assess risks associated with gene therapies based on this platform, including severe liver complications [10] Product Information - Elevidys is the first and only one-time gene therapy for DMD in the U.S., approved for individuals aged four years and older [11] - The therapy has received full approval for ambulatory DMD patients but only accelerated approval for non-ambulatory patients [11] Financial Impact - Sarepta's sales from Elevidys accounted for over half of its revenue in Q1 2025, and the recent safety concerns are expected to severely impact sales in the latter half of the year [4] - The company anticipates more than $100 million in cost savings this year despite incurring one-time charges of up to $37 million [15]