Sarepta reports positive results for muscular dystrophy Type 2E treatment

Sarepta announces results from gene therapy trial for beta sarcoglycanopathy

Sarepta Therapeutics (SPRT) announced the nine-month functional results from three Limb-girdle muscular dystrophy Type 2E ,LGMD2E, clinical trial participants who received SRP-9003. SRP-9003 is an investigational gene therapy intended to transduce skeletal and cardiac muscle with a gene that codes for the full-length, native beta-sarcoglycan protein, the lack of which is the sole cause of LGMD2E.

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In Cohort 1 of the SRP-9003 study, three participants ages 4-13 were treated with an infusion of SRP-9003 at a dose of 5x1013vg/kg.

Improvements in functional outcomes were observed at day 270 for all three participants.

“We have now observed consistent functional improvements, in addition to high levels of expression of the missing protein of interest and strong results in related biomarkers, in both of our first cohorts for Duchenne muscular dystrophy and LGMD2E. We intend to test one higher dose of SRP-9003 in LGMD2E participants, select our clinical dose and then advance our SRP-9003 program, along with our other five LGMD programs, as rapidly as possible,” said Doug Ingram, Sarepta’s president and chief executive officer.

“With the results of our first LGMD2E cohort, Sarepta continues to build its gene therapy engine, an enduring model created to design, develop and bring to the medical and patient community transformative therapies for those living with, and too often dying from, rare genetic disease.”

No new safety signals were observed and the safety profile seen to date supports the ability to dose escalate in the next cohort of the study. As previously disclosed, two participants in the study had elevated liver enzymes, one of which was designated a serious adverse event (SAE), as the participant had associated transient increase in bilirubin. Both events occurred when the participants were tapered off oral steroids and, in both instances, elevated liver enzymes returned to baseline and symptoms resolved following supplemental steroid treatment.

SPRT is up $5.52 to $86.86.

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