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An Open-Label Extension Study of Edasalonexent in Boys With Duchenne Muscular Dystrophy

Phase 3
Terminated
Conditions
Duchenne Muscular Dystrophy
Interventions
Registration Number
NCT03917719
Lead Sponsor
Catabasis Pharmaceuticals
Brief Summary

The GalaxyDMD study is a global Phase 3, open-label, treatment extension study to evaluate the safety, tolerability, and durability of effect in long-term dosing of edasalonexent in pediatric patients with a genetically confirmed diagnosis of DMD. Patients who completed CAT-1004-201 or CAT-1004-301 or siblings of these boys from 4-12 years of age (up to 13th birthday) will be enrolled.

Edasalonexent is an orally administered small molecule that inhibits NF-kB, which is a key link between loss of dystrophin and disease pathology and plays a fundamental role in the initiation and progression of skeletal and cardiac muscle disease in DMD.

Detailed Description

The study includes a 104-week open-label treatment period with edasalonexent. Patients who completed CAT-1004-201 or CAT-1004-301 and eligible siblings of these boys will be enrolled in this trial.

Recruitment & Eligibility

Status
TERMINATED
Sex
Male
Target Recruitment
130
Inclusion Criteria
  • Written consent/assent by patient and/or legal guardian as per regional and/or Institutional Review Board (IRB)/Independent Ethics Committee (IEC) requirements
  • Completion of either CAT-1004-201 or CAT-1004-301
Exclusion Criteria
  • In the Investigator's opinion, unwilling or unable for any reason to complete all study assessments and laboratory tests and comply with scheduled visits, administration of drug, and all other study procedures

For Siblings of Patients who Completed CAT-1004-201 or CAT-1004-301:

Inclusion Criteria:

  • Written consent/assent by patient and/or legal guardian as per regional and/or Institutional Review Board (IRB)/Independent Ethics Committee (IEC) requirements
  • A sibling of a patient who completed either CAT-1004-201 or CAT-1004-301
  • Diagnosis of DMD based on a clinical phenotype with increased serum creatine kinase (CK) and documentation of mutation(s) in the dystrophin gene known to be associated with a DMD phenotype
  • Followed by a doctor or medical professional who coordinates Duchenne care on a regular basis and willingness to disclose patient's study participation with medical professionals

Exclusion Criteria:

  • Use of oral corticosteroids at screening; use of inhaled, intranasal, and topical corticosteroids is permitted
  • Use of another investigational drug, idebenone, or dystrophin-focused therapy within 4 weeks. Exception: Patients who are currently on or plan to initiate treatment with approved oligonucleotide exon-skipping therapies, and expected to continue treatment throughout the study, will be eligible
  • Use of the following within 4 weeks prior to Day 1: immunosuppressive therapy, anticoagulants, cyclosporine, dihydroergotamine, ergotamine, fentanyl, alfentanil, pimozide, quinidine, sirolimus or tacrolimus
  • Use of human growth hormone within 3 months prior to Day 1
  • Other prior or ongoing significant medical conditions

Study & Design

Study Type
INTERVENTIONAL
Study Design
SINGLE_GROUP
Arm && Interventions
GroupInterventionDescription
Dose 1EdasalonexentEdasalonexent 100mg/kg/day. Capsules taken by mouth three times per day.
Primary Outcome Measures
NameTimeMethod
Safety and tolerability of long-term treatment with edasalonexent measured by number of treatment-emergent adverse events (TEAEs) and serious adverse events (SAEs)104 Weeks
Secondary Outcome Measures
NameTimeMethod
Durability of effects of edasalonexent on physical function as measured by the 10-meter walk/run test104 Weeks
Durability of effects of edasalonexent on physical function as measured by the time to stand from supine104 Weeks
Durability of effects of edasalonexent on physical function as measured by the North Star Ambulatory Assessment (NSAA)104 Weeks
Durability of effects of edasalonexent on physical function as measured by the 4-stair climb104 Weeks

Trial Locations

Locations (23)

UC Davis

🇺🇸

Sacramento, California, United States

Rare Disease Research, LLC

🇺🇸

Atlanta, Georgia, United States

University of Iowa Children's Hospital

🇺🇸

Iowa City, Iowa, United States

University of Kansas Medical Center

🇺🇸

Fairway, Kansas, United States

Kennedy Krieger Institute

🇺🇸

Baltimore, Maryland, United States

Johns Hopkins School of Medicine

🇺🇸

Baltimore, Maryland, United States

Boston Children's Hospital

🇺🇸

Boston, Massachusetts, United States

University of Michigan

🇺🇸

Ann Arbor, Michigan, United States

Las Vegas Clinic

🇺🇸

Las Vegas, Nevada, United States

Shriners Hospital for Children

🇺🇸

Portland, Oregon, United States

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UC Davis
🇺🇸Sacramento, California, United States

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