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Can a diabetes drug help the heart burn fuel better in pulmonary hypertension?

NCT ID NCT07737522

Disease control Sponsor: Imperial College London Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 30, 2026 · Last updated Jul 31, 2026 · Updated 1 time

Summary

This trial investigates whether semaglutide, a GLP-1 agonist, can shift how the heart produces energy in people with pulmonary arterial hypertension (PAH). The heart in PAH often relies on inefficient fuel sources, and the drug may help it switch to a more efficient form. Researchers will use a special MRI technique to measure changes in heart energy molecules. The study enrolls 32 adults with confirmed PAH who are already on stable PAH therapies.

What this could mean

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

Active substance
a GLP-1 agonist drug called semaglutide
What this could lead to
If it works, this could point toward a new treatment that helps the heart work more efficiently in people with pulmonary arterial hypertension.
What could go wrong
This is a small, early-phase trial with only 32 participants, so results may not apply widely. The drug may not improve heart energy use or could cause side effects.

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 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 32 people

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

Expected to start

Oct 2026

An estimate. Start dates often move.

Expected to finish

Apr 2029

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

18 to 85 years

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: \- 1. Diagnosis of Group 1 PAH confirmed by right heart catheterisation under the National Pulmonary Hypertension Service, Royal Brompton Hospital, part of GSTT Foundation Trust 2. Age over 18, less than 85 years 3. Able to give informed consent 4. On a stable dose of PAH-specific therapies (e.g., ERA, PDE5i) for at least 3 months. 5\. Clinically justified prescription of GLP-1 agonist Semaglutide based on following criteria: BMI \> 30 or BMI \> 27 with at least one cardiovascular co-morbidity (systemic hypertension, diabetes, pre-diabetes, COPD, atrial fibrillation, dyslipidaemia, sleep disordered breathing) Exclusion Criteria: * • 1. Pregnancy * 2\. Myocardial infarction within the previous 3 months * 3\. Contraindications to MRI: Pacemakers, metallic implants, or severe claustrophobia. * 4\. Severe renal impairment: eGFR \< 15ml/min/1.73m. * 5\. Current use of SGLT2 inhibitors or GLP-1 agonist therapy (which significantly alter fuel substrate preference) or insulin therapy that cannot be held for the fasting scan

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Conditions

The condition(s) this trial relates to.

pulmonary arterial hypertension

As listed by the trial registrant

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

Pulmonary arterial hypertension

How to take part

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  1. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

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More trials for these conditions

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