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.
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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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