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Sevasemten Dose 1

Phase 2

Duchenne Muscular Dystrophy | Small molecule | Neurology |Edgewise Therapeutics, Inc.|Last Updated: Nov 12, 2025

Target and mechanism

ModalitySmall molecule

Also known as Sevasemten

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLEDDMC
Total Trials2
Total Enrollment119

FDA Designations

ORPHAN_DRUGRARE_PEDIATRIC_DISEASEFAST_TRACK

Clinical trial landscape

Sevasemten Dose 1 · 2 trials · 1 indication

Phase 2 2
NCT06100887Phase 2 Study of EDG-5506 in Children and Adolescents With Duchenne Muscular Dystrophy Previously Treated With Gene TherapyDuchenne Muscular Dystrophy
ACTIVE NOT_RECRUITING43 Analytics
NCT05540860A Study of EDG-5506 in Children With Duchenne Muscular Dystrophy (LYNX)Duchenne Muscular Dystrophy
ACTIVE NOT_RECRUITING76 Analytics
PHASE2ACTIVE NOT_RECRUITING
Phase 2 Study of EDG-5506 in Children and Adolescents With Duchenne Muscular Dystrophy Previously Treated With Gene Therapy
Duchenne Muscular DystrophyUnlock trial analytics
PHASE2ACTIVE NOT_RECRUITING
A Study of EDG-5506 in Children With Duchenne Muscular Dystrophy (LYNX)
Duchenne Muscular DystrophyUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of adverse events during treatment with sevasemten or placebo
36 months

All participants

Severity of adverse events during treatment with sevasemten or placebo
36 months

All participants

Secondary Endpoints

Incidence of laboratory test-related treatment emergent adverse events
36 months
Pharmacokinetics as measured by steady state plasma concentration
36 months
Change from Baseline in serum creatine kinase
12 weeks
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Cohort 1EXPERIMENTALDrug: Sevasemten Drug: Placebo
Cohort 2EXPERIMENTALDrug: Sevasemten Drug: Placebo
Cohort 3EXPERIMENTALDrug: Sevasemten Drug: Placebo
Cohort 4EXPERIMENTALDrug: Sevasemten Drug: Placebo
Cohort 5EXPERIMENTALDrug: Sevasemten Drug: Placebo
Cohort 2NSEXPERIMENTALDrug: Sevasemten Drug: Placebo

Interventions

NameTypeDescription
Sevasemten Dose 1DRUGSevasemten is administered orally once per day
Sevasemten Dose 2DRUGSevasemten is administered orally once per day
Sevasemten Dose 3DRUGSevasemten is administered orally once per day
PlaceboDRUGPlacebo is administered orally once per day
Sevasemten Dose 4DRUGSevasemten is administered orally once per day
Sevasemten Dose 5DRUGSevasemten is administered orally once per day
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Eligibility Criteria

Age Range6 Years to 17 Years
SexMALE
Healthy VolunteersNo
Study Sites7

Key Inclusion Criteria: * Aged 6 to 17 with a documented mutation on the DMD gene and phenotype consistent with DMD. * Prior receipt of an AAV-based gene therapy (≥ 2 years after documented receipt of gene therapy administration or ≥ 3 years after randomization in a randomized study). * Able to com...

Countries:United States
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Frequently asked questions about Sevasemten Dose 1

What is Sevasemten used for?

Sevasemten is an investigational small molecule being developed for Duchenne Muscular Dystrophy and Becker Muscular Dystrophy. It is also studied in healthy subjects for drug interaction and food effect evaluations. Sevasemten is in Phase 2 clinical development for these rare neuromuscular diseases.

What does Sevasemten target?

Sevasemten is a small molecule designed to modulate the fast skeletal muscle troponin complex. By targeting this complex, it aims to stabilize the muscle contractile apparatus and reduce muscle damage associated with muscular dystrophies. This mechanism is being evaluated in Duchenne and Becker Muscular Dystrophy.

Who makes Sevasemten?

Sevasemten is being developed by Edgewise Therapeutics, Inc., a biopharmaceutical company traded on NASDAQ under the ticker EWTX. The company is conducting Phase 2 clinical trials for Sevasemten in Duchenne and Becker Muscular Dystrophy.

What phase is Sevasemten in?

Sevasemten is in Phase 2 clinical development. It is not FDA approved and remains investigational. The drug has received FDA designations including Orphan Drug, Rare Pediatric Disease, and Fast Track for its muscular dystrophy indications.

What clinical trials is Sevasemten in?

Sevasemten is being studied in three active Phase 2 trials: NCT05291091 in Becker Muscular Dystrophy, NCT05540860 in children with Duchenne Muscular Dystrophy, and NCT06100887 in children with Duchenne previously treated with gene therapy. A Phase 1 trial in healthy subjects has been completed.

Is Sevasemten the same as EDG-5506?

Sevasemten is also known as Sevasemten Dose 1 and Sevasemten 10 mg. The clinical trials listed for Sevasemten reference the compound EDG-5506, indicating these names refer to the same investigational drug being developed by Edgewise Therapeutics.