BAG3-DCM Natural History Study

March 17, 2026 updated by: Rocket Pharmaceuticals Inc.

An Observational Study of Patients With Dilated Cardiomyopathy (DCM) Associated With Pathogenic BAG3 Variants

The goal of this international observational study is to learn about the natural history of Dilated Cardiomyopathy (DCM) arising from pathogenic BAG3 variants in adult patients ≥18 years of age.

Study Overview

Status

Not yet recruiting

Conditions

Detailed Description

This is an observational study with both retrospective and prospective data collection. The study is designed to describe the natural history of BAG3-DCM including the signs and symptoms, key clinical events, and impact of the disease on quality of life as managed with the current standard of care. A hybrid (retrospective and prospective data collection) approach is being used to generate robust and longitudinal data.

Study Type

Observational

Enrollment (Estimated)

30

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Adult patients 18 years and over (at the point of consenting) with confirmed Dilated Cardiomyopathy (DCM) arising from pathogenic BAG3 Variants recruited from a range of applicable care settings.

Description

Key Inclusion Criteria:

Subjects are eligible for inclusion into the study only if all the following criteria apply:

General:

  1. Adult patients 18 years or older at the time of providing informed consent (i.e., signing the ICF).
  2. Capable and willing to provide signed informed consent, which includes compliance with the requirements and restrictions listed in the ICF and protocol.
  3. Diagnosis of DCM as defined by mild to moderate systolic dysfunction performed within 12 months of enrollment and confirmed by the principal investigator that the DCM is predominantly non-ischemic.
  4. Documentation of a pathogenic or likely pathogenic variant in BAG3 by a CLIA-certified or equivalent genetic testing laboratory.
  5. NYHA class I-III

Key Exclusion Criteria:

All Cohorts:

1. Concurrent enrollment in any other clinical investigation involving use of an investigational agent for any condition at time of enrollment to this study that could confound interpretation of this study results 2. Previous treatment with gene therapy 2. Gene testing indicates that the patient's arrhythmia or cardiomyopathy may be related to a genetic etiology other than BAG3 variant.

4. NYHA class IV HF. 5. Presence or requirement for MCS or predicted need for MCS or heart transplantation within 6 months prior to enrollment.

6. Prior heart transplantation. 7. Known infection with human immunodeficiency virus (HIV). 8. Unwillingness to comply with study procedures, including follow-up as specified by this protocol, or unwillingness to fully cooperate with the investigator.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Prospective Cohort and Retrospective (Non Interventional)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Cardiac structure and function
Time Frame: 48 months
Evaluate cardiovascular health as assessed by cardiac biomarkers and the occurrence of clinical outcomes related to the cardiovascular system.
48 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
NYHA Classification
Time Frame: 48 months
Evaluation over duration of follow up
48 months
Change in arrhythmias or risk factor for ventricular arrhythmias
Time Frame: 48 months
Evaluate changes in health status as assessed by occurrence of clinical outcomes
48 months
Heart rhythm and rate monitoring measures
Time Frame: 48 months
Evaluation of change over duration of follow up
48 months
Cardiac biomarkers and blood proteomics
Time Frame: 48 months
Evaluation of change over duration of follow up
48 months
Evaluate patient reported outcomes and quality of life measures
Time Frame: 48 months
Evaluate patient reported outcomes and quality of life measures using validated questionnaire.
48 months
Evaluate changes in health status
Time Frame: 48 months
Evaluate changes in health status as assessed by occurrence of clinical outcomes
48 months
Event free survival
Time Frame: 48 months
Evaluation over duration of follow up
48 months
Anti-AAV9 titer
Time Frame: 48 months
Change in antibody assay findings over time
48 months
Tissue expression of BAG3 protein and DCM features
Time Frame: 48 months
Change in protein expression and histopathologic features
48 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

May 1, 2026

Primary Completion (Estimated)

December 1, 2032

Study Completion (Estimated)

March 1, 2033

Study Registration Dates

First Submitted

March 12, 2026

First Submitted That Met QC Criteria

March 17, 2026

First Posted (Actual)

March 20, 2026

Study Record Updates

Last Update Posted (Actual)

March 20, 2026

Last Update Submitted That Met QC Criteria

March 17, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • RP-NI-A701-0146

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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