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Could mounjaro ease heart failure in obesity? new trial investigates

NCT ID NCT07554638

Disease control Sponsor: Columbia 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Aug 25, 2026 · Updated 3 times

Summary

This study will test whether tirzepatide (Mounjaro), a drug used for diabetes and weight loss, can help people with obesity-related heart failure with preserved ejection fraction (HFpEF). Researchers will measure changes in blood volume and body fat in 50 participants over 15 months. The goal is to understand how tirzepatide might improve heart function.

What this could mean

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

Active substance
Tirzepatide (Mounjaro)
What this could lead to
If successful, this could show that tirzepatide improves heart failure symptoms in people with obesity by lowering blood volume, pointing toward a new treatment approach.
What could go wrong
This is a small, early-phase study with only 50 participants, so results may not apply to everyone. It focuses on measuring changes in blood volume, not directly on symptoms or survival.

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 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 50 people

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

Started

Aug 2026

Expected to finish

Apr 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

40 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: * Diagnosis of heart failure (HF) per the ACC/AHA guidelines with NYHA class II-III symptoms * Left ventricular ejection fraction \>= 45% within 6 months of recruitment * At least one of the following: elevated N-terminal pro- B-type natriuretic peptide (NT-proBNP) \>=200 pg/ml (\>=600 pg/ml with concurrent atrial fibrillation), evidence of structural heart disease (left atrial (LA) enlargement with LA volume index \>29 mL/m2 or LA diameter \>=40 mm in males/\>38= mm in females), elevated filling pressures (resting wedge \>15 mmHg or exercise wedge \>25 mmHg, lateral E/e' ratio \>12 or septal E/e' \> 15) * Body mass index (BMI) \>30 kg/m2 * Stable doses of HF medications within 4 weeks of screening with optimal volume control in the opinion of the investigator. Exclusion Criteria: * Acute decompensated HF within 4 weeks of screening * Major cardiovascular event within 90 days of screening (myocardial infarction, stroke) * Alternate cause of HFpEF such as cardiac amyloidosis, infiltrative cardiomyopathy, hypertrophic cardiomyopathy, severe valvular disease * Estimated glomerular fibrilation rate (EGFR) \<15 ml/min/1.73m2 or dialysis dependence * Poorly controlled diabetes (A1c \> 9.5%) OR any type 1 diabetes mellitis * History of acute or chronic pancreatitis * Personal or family history of multiple endocrine neoplasia (MEN) or medullary thyroid cancer * Clinically significant gastric emptying abnormality * Medical comorbidities that limit survival * Inability to comply with the study protocol * Pregnancy

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Conditions

The condition(s) this trial relates to.

diastolic heart failure Obesity obesity disorder

As listed by the trial registrant

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

Heart failure with preserved ejection fraction Heart failure, diastolic Obesity

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

  • Columbia University Irving Medical Center (CUIMC) / NewYork Presbyterian Hospital (NYP)

    RECRUITING

    New York, New York, 10032, United States

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