Two-Part Study for Dose Determination of Vesleteplirsen (SRP-5051) (Part A), Then Dose Expansion (Part B) in Participants With Duchenne Muscular Dystrophy Amenable to Exon 51-Skipping Treatment

NCT ID: NCT04004065

Last Updated: 2025-03-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE2

Total Enrollment

62 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-06-26

Study Completion Date

2025-02-07

Brief Summary

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This study will be comprised of 2 parts: 1) Part A (Multiple Ascending Dose \[MAD\]) will be conducted to evaluate the safety and tolerability of vesleteplirsen at MAD levels to determine the maximum tolerated dose (MTD), and 2) Part B will be conducted to further evaluate the vesleteplirsen doses selected in Part A. Participants enrolling in Part B will be those who completed Part A or Study 5051-102 (NCT03675126) and meet applicable eligibility criteria for Part B, as well as additional participants who meet applicable eligibility criteria for enrollment at the beginning of Part B.

Detailed Description

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Conditions

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Duchenne Muscular Dystrophy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Part A: Vesleteplirsen

Participants received escalating dose levels of vesleteplirsen, every 4 weeks, via intravenous (IV) infusion for up to 75 weeks during Part A. Once the doses have been selected for Part B, all participants who have completed Part A will transition to Part B.

Group Type EXPERIMENTAL

Vesleteplirsen

Intervention Type DRUG

Vesleteplirsen injection, for IV use

Part B: Vesleteplirsen

Participants received vesleteplirsen at the doses selected based on data from Part A every 4 weeks, via IV infusion, for up to 5 years. This included the participants who rolled over from Part A, as well as the additional participants who enrolled at the beginning of Part B.

Group Type EXPERIMENTAL

Vesleteplirsen

Intervention Type DRUG

Vesleteplirsen injection, for IV use

Interventions

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Vesleteplirsen

Vesleteplirsen injection, for IV use

Intervention Type DRUG

Other Intervention Names

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SRP-5051

Eligibility Criteria

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Inclusion Criteria

\- Has received prior Vesleteplirsen treatment in Part A of this study or in Study 5051-102.


* Has a genetic diagnosis of Duchenne muscular dystrophy (DMD) and an out-of-frame deletion mutation of the DMD gene amenable to exon 51-skipping treatment.
* Has been on a stable dose of oral corticosteroids for at least 12 weeks prior to study drug administration and the dose is expected to remain constant throughout the study (except for modifications to accommodate changes in weight), or has not received corticosteroids for at least 12 weeks prior to study drug administration.
* Has stable pulmonary function (forced vital capacity \[FVC\] ≥40% of predicted and no requirement for nocturnal ventilation).

Exclusion Criteria

\- Presence of other clinically significant illness, including cardiac, pulmonary, hepatic, renal, hematologic, immunologic, or behavioral disease, or infection or malignancy or any other condition that, in the Investigator's opinion, could interfere with participation in the trial.


* History of hypomagnesemia within 12 weeks prior to Screening.
* Initiation or change of dosing (except for modifications to accommodate changes in weight or changes in standard of care) within 12 weeks prior to Screening for any of the following: angiotensin-converting enzyme inhibitors, angiotensin receptor-blocking agents, β-blockers, or potassium.
* Initiation or change of dosing within 12 weeks prior to Screening for over-the-counter preparations, such as herbal/nonherbal supplements, vitamins, minerals, and homeopathic preparations.
* Has a left ventricular ejection fraction (LVEF) \<40.0% based on an echocardiogram (ECHO) performed within 12 weeks prior to Screening or at the Screening Visit.
* Treatment with any exon 51-skipping therapy within 4 weeks prior to Screening, or with any experimental gene therapy for the treatment of DMD at any time.
Minimum Eligible Age

7 Years

Maximum Eligible Age

21 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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Sarepta Therapeutics, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Medical Director

Role: STUDY_DIRECTOR

Sarepta Therapeutics, Inc.

Locations

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University of California Davis Health

Sacramento, California, United States

Site Status

Connecticut Children's

Farmington, Connecticut, United States

Site Status

Northwest Florida Clinical Research Group, LLC

Gulf Breeze, Florida, United States

Site Status

Rare Disease Research, LLC

Atlanta, Georgia, United States

Site Status

University of Iowa Hospitals and Clinics

Iowa City, Iowa, United States

Site Status

University of Kansas Medical Center Research Inst.

Kansas City, Kansas, United States

Site Status

University of Massachusetts

Worcester, Massachusetts, United States

Site Status

UPMC Children's Hospital of Pittsburgh

Pittsburgh, Pennsylvania, United States

Site Status

Austin Neuromuscular Center

Austin, Texas, United States

Site Status

Children's Health Ambulatory Pavilion

Dallas, Texas, United States

Site Status

Seattle Children's

Seattle, Washington, United States

Site Status

Universitair Ziekenhuis Gent

Ghent, , Belgium

Site Status

UZ Leuven

Leuven, , Belgium

Site Status

Children's Hospital - London Health Sciences Centre (LHSC)

London, Ontario, Canada

Site Status

University of Essen - Children's Hospital

Essen, , Germany

Site Status

Klinikum der Universität München

Munich, , Germany

Site Status

Fondazione Policlinico Universitario A Gemelli

Rome, , Italy

Site Status

A.O.U. Citta della Salute e della Scienza di Torino - SS Malattie Neuromuscolari, Department of Neurosciences

Torino, , Italy

Site Status

Leiden University Medical Center

Leiden, , Netherlands

Site Status

Hospital Sant Joan de Déu. U.B.

Barcelona, , Spain

Site Status

Hospital Universitari I Politecnic La Fe de Valencia

Valencia, , Spain

Site Status

Alder Hey Children's NHS Foundation Trust

Liverpool, Lancashire, United Kingdom

Site Status

Royal Hospital for Children (Glasgow)

Glasgow, , United Kingdom

Site Status

Great Ormond Street Hospital for Children NHS Foundation Trust

London, , United Kingdom

Site Status

Oxford University Hospial NHS Foundation Trust, John Radcliffe Hospital

Oxford, , United Kingdom

Site Status

Countries

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United States Belgium Canada Germany Italy Netherlands Spain United Kingdom

Other Identifiers

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2019-000601-77

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

5051-201

Identifier Type: -

Identifier Source: org_study_id

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