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Open-Label Extension of EDG-5506 in Participants With Becker Muscular Dystrophy

An Open-Label Extension Study to Assess the Long-term Effect of EDG-5506 on Safety, Biomarkers, and Functional Measures in Adults and Adolescents With Becker Muscular Dystrophy

Status
Enrolling by invitation
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06066580
Acronym
MESA
Enrollment
260
Registered
2023-10-04
Start date
2023-11-02
Completion date
2031-02-01
Last updated
2026-09-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Becker Muscular Dystrophy

Keywords

Becker Muscular Dystrophy

Brief summary

EDG-5506-203 MESA is an open-label extension study to assess the long-term effect of sevasemten (EDG-5506) on safety, biomarkers, and functional measures in adults and adolescents with Becker muscular dystrophy

Detailed description

This is an open-label, treatment extension study to evaluate the safety, tolerability, and durability of effect in long-term dosing of sevasemten. EDG-5506-203 MESA will provide continued access to sevasemten treatment to participants with Becker muscular dystrophy who were previously enrolled in EDG-5506-002 ARCH, completed EDG-5506-201 CANYON and GRAND CANYON, or completed EDG-5506-202 DUNE.

Interventions

Sevasemten is administered orally once per day

Sponsors

Edgewise Therapeutics, Inc.
Lead SponsorINDUSTRY
Medpace, Inc.
CollaboratorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: 1\. Males with a diagnosis of BMD and participation in EDG-5506-002 ARCH, EDG-5506-201 CANYON and GRAND CANYON, or EDG-5506-202 DUNE. Participants are eligible if they complete the respective prior study visits as follows: * EDG-5506-002 ARCH: Complete the final study Visit 27 \[Month 24\]; or, completion of the ET visit prior to Visit 27 \[Month 24\] * EDG-5506-201 CANYON and GRAND CANYON: Complete the final study visit (Cohorts 1, 2, 4, and 5: Visit 12 \[Month 12\]; Cohort 6: Visit 11 \[Month 18\]) * EDG-5506-202 DUNE: Complete at least 36 weeks of open-label treatment (Visit 14 \[Week 52\]) Key

Exclusion criteria

1. Any clinically significant changes during or following participation in EDG-5506-002, EDG-5506-201, or EDG-5506-202 that would affect the potential safety of the participant to receive sevasemten. 2. Receiving moderate or strong cytochrome P450 CYP3A4 inhibitors or inducers. 3. Receipt of an investigational drug other than sevasemten within 30 days or 5 half-lives (whichever is longer) of dosing in the present study. 4. Receipt of oral corticosteroids for the treatment of BMD in the previous 6 months.

Design outcomes

Primary

MeasureTime frame
Number of adverse events in those treated with sevasemten55 Months
Severity of adverse events in those treated with sevasemten55 Months

Secondary

MeasureTime frame
Incidence of treatment-emergent abnormal clinical chemistry laboratory test results54 Months
Incidence of treatment-emergent abnormal hematology laboratory test results54 Months

Countries

Australia, Belgium, Denmark, France, Germany, Israel, Italy, Netherlands, New Zealand, Spain, United Kingdom, United States

Contacts

STUDY_CHAIRJoanne M. Donovan, MD, PhD

Edgewise Therapeutics, Inc.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 18, 2026