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Could a common heart drug spark new muscle growth in babies with heart defects?

NCT ID NCT04713657

Disease control Sponsor: Weill Medical College of Cornell University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This early-stage trial tests whether the beta-blocker propranolol can stimulate heart muscle cell growth in infants born with Tetralogy of Fallot, a serious heart defect. Forty infants under 60 days old will receive propranolol, and researchers will measure new heart muscle cells in tissue discarded during surgery. The goal is to see if this approach could eventually prevent heart failure later in life.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Propranolol (a beta-blocker medicine)
What this could lead to
If it works, this could point toward a treatment that helps infants with congenital heart disease grow new heart muscle cells, potentially reducing their risk of heart failure later in life.
What could go wrong
This is a very early Phase 1 trial with only 40 infants, so it is not yet known if propranolol is effective or safe for this purpose. The study is small and exploratory, so results may not lead to a proven therapy.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 40 people

The number the study aims to enrol. It can still change while the study runs.

Started

Dec 2022

Expected to finish

Dec 2030

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

30 to 60 days

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Male and female infants \< 60 days of age with a diagnosis of tetralogy of Fallot (ToF) with pulmonary stenosis (PS) or double outlet right ventricle (DORV), tetralogy type by echocardiogram, who weigh greater than 2 kg at the time of consent and are tolerating enteral feeds. * DORV variant Exclusion Criteria: * congenital atrio-ventricular block on EKG (PR interval \> 120 ms), * concomitant medication administration that interacts with propranolol, * patient family is, in the opinion of the investigator, unable to comply with the requirements of the study protocol or is unsuitable for the study for any reason, * gestation age \< 35 weeks, * infants of diabetic mothers, asthma or underlying respiratory disease, * presence of metal implants in infants.

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Conditions

The condition(s) this trial relates to.

double outlet right ventricle tetralogy of fallot

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Double outlet right ventricle Tetralogy of fallot

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    3 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Children's Hospital of Philadelphia

    RECRUITING

    Philadelphia, Pennsylvania, 19104, United States

  • Upmc Children'S Hospital of Pittsburgh

    RECRUITING

    Pittsburgh, Pennsylvania, 15224, United States

  • Weill Cornell Medicine

    RECRUITING

    New York, New York, 10065, United States

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