Clinical trial Recruiting at 1 site Observational Ages 18 and up

Extracellular Vesicles to Monitor Heart Transplant Rejection

Official title: Extracellular Vesicles for Rejection Monitoring in Cardiac Transplantation

Run by Charite University, Berlin, Germany · NCT07673536 · Data updated 2026-11-12

This study will test whether protein patterns in extracellular vesicles from heart transplant patients can signal acute rejection early.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment30 (estimated)
SponsorCharite University, Berlin, Germany
Academic / other
Locations1 site (Berlin, State of Berlin)
StatusRecruiting
StartedJune 18, 2026
Main results expectedSeptember 30, 2028
Study endsNovember 30, 2028
Registry record updatedJuly 1, 2026
Trial IDNCT07673536 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (18+) who are on the heart transplant waiting list or are hospitalized after heart transplant surgery.

Probably not a fit

Patients not experiencing rejection or lacking relevant EV protein signals may not benefit from the biomarker utility.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Researchers will analyze EV-derived protein profiles in heart transplant patients during the first 15 months after surgery to see if specific proteins or patterns can indicate early acute rejection. The study will also look at how EV protein profiles change in the early postop period regardless of rejection and whether these markers relate to imaging findings. This observational study will use existing samples and clinical data to explore potential correlations with clinical events and imaging results.

Why it matters

Potential benefit: If successful, this approach could enable earlier, noninvasive detection of rejection and help tailor patient management.

How similar studies have gone: Other studies have reported that EV-derived proteins can reflect immune activity, but this application in early post-transplant rejection monitoring is still exploratory.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Subject is either on the heart transplant waiting list or is still hospitalised following HTx surgery.
* Age of subject is ≥ 18 years.
* Subject is female or male.
* Capacity to consent.
* Signed written informed consent.
* For female subjects:

  1. Confirmed post-menopausal state, defined as amenorrhea for at least 12 months, or
  2. If being of childbearing potential: Negative highly sensitive urine or serum pregnancy test before inclusion.

Exclusion Criteria:

* Concurrent multiple solid organ or tissue transplants.
* Prior history of any organ or cellular transplantation.
* Subject suffers from an addiction or from a disease that prevents the subject from recognising nature, scope, and consequences of the study.
* Subject shows an inability to comply with all the study procedures and follow-up visits.
* Subject is legally detained in an official institution.
* Subjects who are unwilling to consent to saving and propagation of pseudonymised medical data for study reasons.
* Subject is financially dependent on the investigators or the study site.

Where it's running

  • Deutsches Herzzentrum der Charité, Department vor cardio-thoracic and vascular surgery
    Berlin, State of Berlin, Germany
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.