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Can your own stem cells help a failing heart heal?

NCT ID NCT06154044

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 pilot trial tests whether a patient's own stem cells can help the heart muscle recover in people with advanced chronic heart failure who already have a mechanical heart pump (LVAD). Ten patients will receive their own CD34+ stem cells injected into a heart artery. Researchers will measure changes in heart function, walking ability, and quality of life over six months.

What this could mean

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

Active substance
CD34+ stem cells (the patient's own blood stem cells)
What this could lead to
If it works, this could point toward a way to help heart muscle recover in people with advanced heart failure who need a mechanical heart pump.
What could go wrong
This is a very small early-phase trial with only 10 people, so results may not apply to everyone. Stem cell injections carry risks like infection or heart damage, and the therapy may not improve heart function.

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 10 people

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

Started

May 2022

Expected to finish

Mar 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 65 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.

Patient inclusion criteria will consist of all of the following: 1. non-ischemic dilated cardiomyopathy 2. patient accepted for LVAD support 3. optimal (or maximal tolerable therapy) heart failure ≥ 2 months 4. age 18-65 years 5. ability to provide informed consent Patient exclusion criteria will consist of any of the following: 1. ischemic cardiomyopathy 2. Cardiomyopathy with a reversible cause that has not been treated e.g. thyroid disease, alcohol abuse, hypophosphataemia, hypocalcaemia, cocaine abuse, selenium toxicity \& chronic uncontrolled tachycardia. 3. Cardiomyopathy in association with a neuromuscular disorder e.g. Duchenne's progressive muscular dystrophy. 4. ongoing or recent (less than 1 month) infection 5. acute multi-organ failure 6. clinically significant anemia (Hb \< 10 g/dL) 7. clinically significant leukopenia (L \< 2 x 109/L) or leukocytosis (L \> 14 x 109/L) 8. clinically significant thrombocytopenia (TRC \< 50 x 109/L) 9. known disorders of hemostasis that can not be corrected 10. history of any thromboembolic complications 11. chronic kidney disease (higher than stage III) 12. chronic liver disease (Child B or C) 13. diminished functional capacity for other reasons such as COPD, moderate or severe claudications, severe musculosceletal system pain or morbid obesity (BMI \> 35 kg/m2) 14. aortic stenosis (AVA \< 1.3 cm2) or ocluded aortic valve 15. artificial (mechanical or biological) aortic valve 16. patients with reduced immune response 17. history of limphoprolipherative disorders or malignancy within 5 years 18. left ventricular thrombus 19. participation in another interventional clinical trial 20. life expectancy less than 12 months 21. known hypersensitivity to DMSO, penicillin or streptomycin

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

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

  • University Medical Center Ljubljana

    RECRUITING

    Ljubljana, 1000, Slovenia

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