A Study in Participants With Duchenne Muscular Dystrophy Amenable to Exon 44 Skipping to Evaluate the Safety and Efficacy of ENTR-601-44 (NCT07037862) — UK Trial Details

Condition(s) studied

Duchenne Muscular Dystrophy (DMD)

Investigational drug(s) / intervention(s)

ENTR-601-44ENTR-601-44 - matching placebo

ENTR-601-44: intravenous infusion

ENTR-601-44 - matching placebo: intravenous infusion

Study summary

This is a study of the investigational medicine ENTR-601-44 in participants who have Duchenne muscular dystrophy (DMD), a rare genetic condition.

The researchers want to: Test how safe ENTR-601-44 is, learn about any side effects, and look at the potential positive effects of ENTR-601-44, compared to placebo. Placebo looks like the investigational medicine but does not contain any active ingredient. In this summary ENTR-601-44 and placebo are both called study treatments.

The study has 2 parts:

* Part A

* A Double-Blind Period, to evaluate if ENTR-601-44 is safe and to determine the best dose of ENTR-601-44 for Part B.
* Following the Double-Blind period, participants will roll into an open-label treatment period during which the safety and efficacy of extended dosing will be evaluated.
* Part B

* To further evaluate the effect and safety of ENTR-601-44 at the dose determined in Part A.

Participants will:

* Receive study treatment in the form of multiple intravenous (IV) infusions (slow injection) into a vein over the course of several weeks in Part A and in Part B
* Visit the clinic regularly for checkups and tests such as: blood and urine tests, physical examinations, questionnaires, and exercise tests. Participants will have a muscle biopsy at the beginning of their participation and after their last dose to allow researchers to compare whether there have been changes in the muscle as a result of the study drug.

Participants are allowed to continue receiving their standard of care therapy for DMD during the study, as long as their health remains stable.

Eligibility

Sex

MALE

Min age

4 Years

Max age

20 Years

Healthy volunteers

No

Principal inclusion criteria 1. Genetic diagnosis of Duchenne muscular dystrophy (DMD) and confirmed pathologic variant in the dystrophin gene amenable to exon 44 skipping as reviewed by a central genetic counselor. 2. Assigned male at birth with clinical signs compatible with Duchenne muscular dystrophy as determined by the investigator. 3. Part A: 4-20 years of age, inclusive. 4. Ambulatory Status Part A: ambulatory with a Performance of the Upper Limb v2.0 (PUL 2.0) Entry as per protocol at Screening 5. Adequate muscle for obtaining tissue biopsy as assessed by the investigator. 6. Other protocol-defined criteria apply. Principal exclusion criteria 1. Any significant concomitant medical condition that might interfere with the ability to comply with protocol requirements. 2. Has an acute illness within 4 weeks prior to the first dose of study drug which may interfere with study measurements or jeopardize participant's safety. 3. Use of the following medications: 1. Prior treatment with any exon skipping therapy at any time 2. Prior treatment with any gene therapy at any time 3. Use of anti-coagulants, anti-thrombotics, or anti-platelet agents 4. Use of an immunosuppressants (other than oral corticosteroids for DMD conditions) 5. Has taken or is currently taking a histone deacetylase (HDAC) inhibitor, including (but not limited to) givinostat 4. Laboratory abnormalities. 5. Daytime ventilator dependence or any use of invasive mechanical ventilation via tracheostomy. 6. Has an abnormal electrocardiogram (ECG) reading assessed as clinically significant by the investigator, and/or a QT interval with Fridericia correction method (QTcF) \>450 msec at Screening or prior to the first dose of study drug on Day 1. 7. Received any experimental or investigational drug, etc. within 3 months prior to first dose or within 5 half-lives (whichever is longer). 8. Other protocol-defined criteria apply.

Primary outcome measure(s)

Number of participants with Treatment Emergent Adverse Events (TEAEs) according to study protocol (Part A and Open Label (OL) Period) — From baseline through End of Study (up to 62 weeks).
Safety will be assessed by monitoring adverse events, physical examination, vital signs and clinical laboratory tests.

Trial sites (14)

Facility	City	Region	Status
University Hospital Gent	Ghent	Belgium	Recruiting
UZ Leuven	Leuven	Belgium	Recruiting
Centre Hospitalier Régional de la Citadelle	Liège	Belgium	Recruiting
IRCCS Ospedale San Raffaele	Milan	Italy	Recruiting
Fondazione Serena Onlus - Centro Clinico NeMO Milano	Milan	Italy	Recruiting
Ospedale Pediatrico Bambino Gesu	Rome	Italy	Recruiting
Hospital Universitario Vall d'Hebron	Barcelona	Spain	Recruiting
Hospital Sant Joan de Deu	Barcelona	Spain	Recruiting
Leeds General Infirmary	Leeds	United Kingdom	Recruiting
Alder Hey Children's NHS Foundation Trust	Liverpool	United Kingdom	Recruiting
Great Ormond Street Hospital for Children	London	United Kingdom	Recruiting
Royal Manchester Children's Hospital	Manchester	United Kingdom	Not Yet Recruiting
Freeman Hospital	Newcastle upon Tyne	United Kingdom	Recruiting
Oxford University Hospitals NHS Foundation Trust	Oxford	United Kingdom	Recruiting

More Entrada Therapeutics, Inc. trials in the UK

Long-Term Extension Study in Participants With Duchenne Muscular Dystrophy Amenable to Exon Skipping to Evaluate the Safety and Efficacy of Endosomal Escape Vehicle Phosphorodiamidate Morpholino Oligomer Platform Products (ELEVATE-LTE) Starting soon

A Study in Participants With Duchenne Muscular Dystrophy Amenable to Exon 45 Skipping to Evaluate the Safety and Efficacy of ENTR-601-45 Recruiting

Other trials for the same condition

Long-Term Extension Study in Participants With Duchenne Muscular Dystrophy Amenable to Exon Skipping to Evaluate the Safety and Efficacy of Endosomal Escape Vehicle Phosphorodiamidate Morpholino Oligomer Platform Products (ELEVATE-LTE) Starting soon

Safety, Tolerability, Pharmacodynamic, Efficacy, and Pharmacokinetic Study of DYNE-251 in Participants With Duchenne Muscular Dystrophy Amenable to Exon 51 Skipping Active, not recruiting

An Open-Label Extension Study to Evaluate the Long-term Safety and Efficacy of BMN 351 in Participants With Duchenne Muscular Dystrophy Enrolling by invitation

A Study in Participants With Duchenne Muscular Dystrophy Amenable to Exon 45 Skipping to Evaluate the Safety and Efficacy of ENTR-601-45 Recruiting