Study of Eteplirsen in DMD Patients (PROMOVI)

Sarepta Therapeutics

Status and phase: Completed; Phase 3

Conditions: Duchenne Muscular Dystrophy (DMD)

Treatments: Drug: eteplirsen

Study type: Interventional

Funder types: Industry

Identifiers

NCT02255552

4658-301

Details and patient eligibility

About

The main objective of this study is to provide evidence of efficacy of eteplirsen (AVI-4658) in Duchenne muscular dystrophy (DMD) patients that are amenable to skipping exon 51. Additional objectives include evaluation of safety, biomarkers and the long-term effects of eteplirsen up to 96 weeks, followed by a safety extension (not to exceed 48 weeks).

Full description

This is an open-label, multi-center study to evaluate the efficacy and safety of eteplirsen in patients with genotypically confirmed Duchenne muscular dystrophy (DMD) with genetic deletions amenable to exon 51 skipping (treated group), with a concurrent control arm of DMD patients not amenable to exon 51 skipping (untreated group). Following primary efficacy endpoints, dosing will continue to week 144 to evaluate the long term effects of eteplirsen.

Patients in the treated group will receive once weekly intravenous (IV) infusions of 30 mg/kg Eteplirsen for 96 weeks, followed by a safety extension (not to exceed 48 weeks). Patients in the untreated group will not receive treatment.

Clinical efficacy will be assessed at regularly scheduled study visits, including functional tests such as the six minute walk test. Patients in the treated group will undergo a muscle biopsy at Baseline and a second muscle biopsy over the course of the study. Patients in the untreated group will not undergo muscle biopsy.

Safety, including adverse event monitoring and routine laboratory assessments, will be continuously monitored for all patients.

Enrollment: 109 patients

Sex: Male

Ages: 7 to 16 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Male 7-16 years old
• Diagnosed with DMD, genotypically confirmed
• Stable dose of corticosteroids for at least 24 weeks
• Have intact right and left alternative upper muscle groups
• Mean 6MWT greater than 300m (primary analysis on 300 to 450 meters)
• Stable pulmonary and cardiac function: predicted FVC equal to or greater than 50% and LVEF of greater than 50%

Exclusion criteria

• Previous treatment with drisapersen or any other RNA antisense agent or any gene therapy within the last 6 months
• Participation in any other DMD interventional clinical study within 12 weeks
• Major surgery within 3 months
• Presence of other clinically significant illness
• Major change in the physical therapy regime within 3 months

Other inclusion/exclusion criteria apply.

Trial design

Primary purpose: Treatment

Allocation: Non-Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

---

109 participants in 2 patient groups

Treated Group

Experimental group

Description:

Approximately 80 patients with genotypically confirmed Duchenne muscular dystrophy (DMD) with genetic deletions amenable to treatment by exon 51 skipping will receive 30 mg/kg of eteplirsen weekly for 96 weeks, followed by a safety extension (not to exceed 48 weeks).

Treatment:

Drug: eteplirsen

Untreated Group

No Intervention group

Description:

Approximately 30 DMD patients not amenable to exon 51 skipping will not receive eteplirsen.