Sarepta Therapeutics (SRPT) Reports Statistically Significant Data for Eteplirsen in DMD Patients
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Sarepta Therapeutics (Nasdaq: SRPT), announced that treatment with its exon-skipping compound, eteplirsen, achieved a significant clinical benefit on the primary clinical outcome, the 6-minute walk test (6MWT), over a placebo/delayed treatment cohort in a Phase IIb trial in Duchenne muscular dystrophy (DMD) patients. Eteplirsen administered once weekly at 50mg/kg over 36 weeks resulted in a 69.4 meter benefit compared to patients who received placebo for 24 weeks followed by 12 weeks of treatment with eteplirsen in the open-label extension. In the predefined prospective analysis of the study's intent-to-treat (ITT) population on the primary clinical outcome measure, the change in 6MWT distance from baseline, eteplirsen-treated patients who received 50mg/kg of the drug weekly (n=4) demonstrated a decline of 8.7 meters in distance walked from baseline (mean=396.0 meters), while patients who received placebo/delayed-eteplirsen treatment for 36 weeks (n=4) showed a decline of 78.0 meters from baseline (mean=394.5 meters), for a statistically significant treatment benefit of 69.4 meters over 36 weeks (pd0.019).
The clinical benefit observed in the 50mg/kg treatment cohort compared to placebo was also significant at week 32 with a benefit of 59.9 meters (pd0.045). The safety profile of eteplirsen was evaluated across all subjects through 36 weeks and there were no treatment-related adverse events, no serious adverse events and no discontinuations. Furthermore, no treatment related changes were detected on any safety laboratory parameters, including several biomarkers for renal function.
The clinical benefit observed in the 50mg/kg treatment cohort compared to placebo was also significant at week 32 with a benefit of 59.9 meters (pd0.045). The safety profile of eteplirsen was evaluated across all subjects through 36 weeks and there were no treatment-related adverse events, no serious adverse events and no discontinuations. Furthermore, no treatment related changes were detected on any safety laboratory parameters, including several biomarkers for renal function.
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