Sarepta Therapeutics Initiates Screening in EMERGENE, a Phase 3 Clinical Study of SRP-9003 for the Treatment of Limb-Girdle Muscular Dystrophy Type 2E/R4

Sarepta Therapeutics, Inc. (NASDAQ:SRPT), the leader in precision genetic medicine for rare diseases, today announced that screening is underway in Study SRP-9003-301. Also known as EMERGENE, Study 9003-301 is a Phase 3, multi-national, open-label study of SRP-9003 (bidridistrogene xeboparvovec) for the treatment of limb-girdle muscular dystrophy Type 2E (LGMD2E/R4), or beta sarcoglycanopathy. EMERGENE will enroll 15 participants (ambulatory and non-ambulatory), aged 4 and older, and uses commercially representative process SRP-9003 material.

“We are pleased to share our continued progress in advancing SRP-9003, our investigational gene therapy candidate for LGMD2E, a rare form of LGMD with no treatments beyond symptom management. Early results from the SRP-9003 clinical development program demonstrated significant protein expression at both 12-weeks and two years after treatment as well as functional benefits including slowing progression of this disease, improving mobility, and enhancing the quality of life for individuals living with LGMD2E,” said Louise Rodino-Klapac, Ph.D., executive vice president, chief scientific officer and head of research and development, Sarepta Therapeutics. “In addition to its importance for the LGMD2E community, EMERGENE will inform the clinical development of other programs for LGMD in Sarepta’s pipeline while serving as a pathfinder for viable regulatory pathways to support the development of gene therapies to treat ultra rare diseases.”

A webinar for the limb-girdle community is planned, details will be shared at a future date.

About SRP-9003 (bidridistrogene xeboparvovec)

SRP-9003 (bidridistrogene xeboparvovec) is an investigational gene therapy that uses the AAVrh74 vector, which is designed to be systemically and robustly delivered to skeletal, diaphragm and cardiac muscle, making it an ideal candidate to treat neuromuscular diseases. SRP-9003 is intended to deliver a full-length beta-sarcoglycan transgene and uses the MHCK7 promoter, chosen for its ability to robustly express in the heart, which is critically important for patients with limb-girdle muscular dystrophy Type 2E (LGMD2E), also known as beta-sarcoglycanopathy and LGMDR4, many of whom die from pulmonary or cardiac complications.