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Fat in the heart: new clues for PAH?

NCT ID NCT05462574

Knowledge-focused Sponsor: Vanderbilt University Medical Center 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study examines why fat accumulates in the right ventricle of people with pulmonary arterial hypertension (PAH) and how it affects heart function and exercise ability. Researchers will use MRI and blood tests in 75 adults with PAH to track changes over time. The goal is to better understand the disease, not to test a new treatment.

What this could mean

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

What this could lead to
If successful, this research could point toward new ways to monitor or treat PAH by targeting fat accumulation in the heart.
What could go wrong
This is an observational study, not a treatment trial. It is small (75 people) and early-stage, so findings may not lead to direct therapies.

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.

Participants

About 75 people

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

Started

Jan 2023

Expected to finish

Sep 2027

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.

Who is studied

Patients with PAH will be recruited from the Center for Pulmonary Vascular Disease (CPVD) at Vanderbilt University Medical Center.

Ages

18 years and older

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: * ≥ 18 years old * Diagnosed with idiopathic, heritable, connective tissue disease-associated PAH, associated pulmonary arterial hypertension (PAH), or drug-or toxin-associated PAH according to World Health Organization (WHO) consensus recommendations. * Stable PAH-specific medication regimen for three months prior to enrollment. Adjustments in IV prostacyclin for side effect management are allowed. Diuretic adjustments are permitted. * WHO Functional Class I-III * Ambulatory * Able to have an MRI/MRS, perform a 6MWD test, and cardiopulmonary exercise test Exclusion criteria: * Pregnancy * Diagnosis of PAH etiology other than idiopathic, heritable, connective tissue disease - associated PAH or associated with drugs and toxins * WHO Functional class IV heart failure * Requirement for continuous oxygen * Unable to have an MRI/MRS, perform a 6MWD test, or cardiopulmonary exercise test. * Patients with implanted/embedded ferromagnetic material that would preclude cardiac MRI

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Conditions

The condition(s) this trial relates to.

drug- or toxin-induced pulmonary arterial hypertension Familial Primary Pulmonary Hypertension heritable pulmonary arterial hypertension idiopathic pulmonary arterial hypertension pulmonary arterial hypertension

As listed by the trial registrant

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

Heritable pulmonary arterial hypertension Idiopathic pulmonary arterial hypertension Pulmonary arterial hypertension associated with connective tissue disease

How to take part

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

  1. The places running it

    1 site. 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

  • Vanderbilt University Medical Center

    RECRUITING

    Nashville, Tennessee, 37232, United States

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