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Non-invasive Prediction of EArly Cardiac rEjection (PEACE)

17. august 2026 opdateret af: Jonathan Soslow, Vanderbilt University Medical Center

Predictive Modeling of Acute Rejection in Pediatric Heart Transplant Recipients

Acute rejection remains a major cause of morbidity and mortality in pediatric patients after heart transplant. In order to screen for rejection, most centers perform heart catheterizations with endomyocardial biopsies frequently in the first year post transplant and then every 1-2 years thereafter; these biopsies are associated with complications, can cause significant anxiety in patients and family members, and are a significant cost for the healthcare system. This project will evaluate non-invasive methods of detecting rejection using cardiac magnetic resonance imaging and blood testing with a goal to reduce the required number of cardiac catheterizations.

Studieoversigt

Status

Rekruttering

Betingelser

Detaljeret beskrivelse

Despite significant advances in the care of pediatric heart transplant (PHTx) patients, acute rejection (AR) remains one of the leading causes of death. Cardiac catheterization with endomyocardial biopsy (biopsy) is the standard of care for diagnosing AR and is performed when there is a clinical suspicion for AR or during routine surveillance. Unfortunately, biopsy is invasive and associated with potential risks, including: complications from anesthesia or sedation, valve damage, injury to the conduction system, vascular damage or occlusion, and cardiac perforation. These potential complications are magnified in the pediatric population. Non-invasive methods of detecting AR, such as blood biomarkers and cardiac magnetic resonance imaging (CMR), could decrease the frequency of biopsy. Blood biomarkers, such has donor fraction cell-free DNA and microRNA, have shown potential for diagnosis of AR but have not yet gained widespread adoption in PHTx. Advanced CMR parametric mapping sequences quantify myocardial fibrosis and edema, and our preliminary data suggest a potential for these sequences to diagnose AR. While CMR parametric mapping has significant promise, focusing simply on the average properties across an entire left ventricular plane or region ignores the spatial patterns of disease, resulting in a loss of information and an impaired ability to use the imaging data to direct care. Here we propose advanced image analysis methods that are more granular than plane analysis, including texture analysis, as a means for objectively analyzing different patterns of myocardial disease and developing predictive models that would allow improved clinical decision making. The central hypothesis of this grant is that non-invasive cardiac magnetic resonance and blood biomarkers can detect myocardial abnormalities consistent with acute rejection in pediatric heart transplant recipients and can predict the need for endomyocardial biopsy. To address this hypothesis, Aim 1 will develop and validate a comprehensive predictive model for identifying PHTx recipients having suspected AR and requiring cardiac catheterization. Aim 2 will evaluate whether blood biomarkers improve the CMR model developed in Aim 1. SubAims will include assessment of cost to determine the most cost-efficient screening protocol. Aim 3 will expand modeling to determine severity of AR as defined histologically. This multi-PI proposal is a prospective, multicenter study to perform CMR in PHTx with and without AR who are also undergoing clinical biopsy. The innovation of this study is the use of advanced CMR, texture analysis, and blood biomarkers for the non-invasive detection of AR. This proposal leverages the support of the Congenital/Pediatric Research Committee within the Society of Cardiovascular Magnetic Resonance (SCMR). Application of these data to clinical practice could improve quality of life and decrease associated morbidity by ensuring that only patients with a high probability of rejection undergo biopsy.

Undersøgelsestype

Observationel

Tilmelding (Anslået)

200

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

  • Navn: Jonathan Soslow, MD MSCI
  • Telefonnummer: 615-322-7447
  • E-mail: PEACE@vumc.org

Studiesteder

    • Arkansas
      • Little Rock, Arkansas, Forenede Stater, 72202
        • Rekruttering
        • Arkansas Children's Hospital
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 501-364-4000
          • E-mail: peac@vumc.org
    • California
      • Los Angeles, California, Forenede Stater, 90027
        • Rekruttering
        • Children's Hospital of Los Angeles
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 323-361-2461
      • Los Angeles, California, Forenede Stater, 90095
        • Rekruttering
        • UCLA
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 310-267-7667
          • E-mail: peace@vumc.org
      • Palo Alto, California, Forenede Stater, 94304
        • Rekruttering
        • Lucile Packard Children's Hospital at Stanford
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 650-337-3766
          • E-mail: peace@vumc.org
      • San Diego, California, Forenede Stater, 92123
        • Rekruttering
        • Rady Children's Hospital
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 858-966-5855
          • E-mail: peace@vumc.org
    • Colorado
      • Denver, Colorado, Forenede Stater, 13123
        • Rekruttering
        • Children's Hospital Colorado
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 720-777-6820
          • E-mail: peace@vumc.org
    • Florida
      • Gainesville, Florida, Forenede Stater, 32608
        • Rekruttering
        • University of Florida
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: (352) 273-7770
          • E-mail: peace@vumc.org
      • Hollywood, Florida, Forenede Stater, 33021
        • Rekruttering
        • Joe DiMaggio Children's Hospital
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 954-265-3437
          • E-mail: peace@vumc.org
    • Georgia
      • Atlanta, Georgia, Forenede Stater, 30322
        • Rekruttering
        • Children's Hospital of Atlanta
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 404-256-2593
          • E-mail: peace@vumc.org
    • Illinois
      • Chicago, Illinois, Forenede Stater, 02115
        • Rekruttering
        • Lurie Children's Hospital
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 312-227-4000
          • E-mail: peace@vumc.org
    • Indiana
      • Indianapolis, Indiana, Forenede Stater, 46202
        • Rekruttering
        • Riley Children's Hospital
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 317-944-8906
          • E-mail: peace@vumc.org
    • Massachusetts
      • Boston, Massachusetts, Forenede Stater, 02115
        • Rekruttering
        • Boston Children's Hospital
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 617-355-6000
          • E-mail: peace@vumc.org
    • Michigan
      • Ann Arbor, Michigan, Forenede Stater, 48109
        • Rekruttering
        • University of Michigan
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 734-764-5176
          • E-mail: peace@vumc.org
    • Missouri
      • St Louis, Missouri, Forenede Stater, 63110
        • Rekruttering
        • Washington University
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 314-454-6095
          • E-mail: peace@vumc.org
    • New York
      • New York, New York, Forenede Stater, 10032
        • Rekruttering
        • Columbia University
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 212-305-4432
          • E-mail: peace@vumc.org
      • New York, New York, Forenede Stater, 10029
        • Rekruttering
        • Mount Sinai Kravis Children's Hospital
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 212-241-9500
          • E-mail: peace@vumc.org
    • Ohio
      • Columbus, Ohio, Forenede Stater, 43205
        • Rekruttering
        • Nationwide Children's Hospital
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 614-722-2530
          • E-mail: peace@vumc.org
    • Tennessee
      • Nashville, Tennessee, Forenede Stater, 37232
        • Rekruttering
        • Vanderbilt University Medical Center
        • Kontakt:
    • Texas
      • Houston, Texas, Forenede Stater, 77030
        • Rekruttering
        • Texas Children's Hospital
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 832-824-3278
          • E-mail: peace@vumc.org
      • Houston, Texas, Forenede Stater, 77030
        • Rekruttering
        • UT Health Houston
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 713-486-6755
          • E-mail: peace@vumc.org
    • Washington
      • Seattle, Washington, Forenede Stater, 98105
        • Rekruttering
        • Seattle Children's Hospital
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 206-987-2000
          • E-mail: peace@vumc.org
    • Wisconsin
      • Milwaukee, Wisconsin, Forenede Stater, 53226
        • Rekruttering
        • Medical College of Wisconsin
        • Kontakt:
          • Study Coordinator
          • Telefonnummer: 414-266-6457
          • E-mail: peace@vumc.org

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Barn
  • Voksen

Tager imod sunde frivillige

Ingen

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Pediatric heart transplant recipients undergoing endomyocardial biopsy either for concerns of rejection or for routine surveillance.

Beskrivelse

Inclusion Criteria:

  • Received heart transplant at age < 21 years old
  • > 2 months from transplant
  • ≥6 years old and ≤ 25 years old and able to undergo cardiac MRI (CMR)
  • CMR can be scheduled within 5 days from heart biopsy*
  • Heart catheterization with biopsy is scheduled "for cause" to confirm suspected AR or Heart catheterization with biopsy is scheduled for surveillance

Exclusion Criteria:

  • No endomyocardial biopsy scheduled
  • Other illness or disease process that could potentially lead to myocardial edema or fibrosis
  • Contraindication to CMR with contrast
  • Previously enrolled in this study, UNLESS previous enrollment was heart biopsy scheduled for surveillance with no suspicion of AR AND final study status was documented as "no AR" AND current enrollment is heart biopsy is scheduled "for cause" to confirm suspected AR
  • Multiple transplanted organs
  • Requires anesthesia for CMR

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Healthy pediatric heart transplant recipients
Pediatric heart transplant recipients not having rejection
Pediatric heart transplant recipients with acute rejection
Pediatric heart transplant recipients with acute rejection (ACR or AMR) as defined by the the core pathologist.
Healthy controls
Healthy control patients retrospectively enrolled at each site to standardize parametric mapping.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Acute rejection
Tidsramme: time of enrollment
Rejection is defined as a clinical event that results in augmentation of immunosuppression. Core pathology laboratory will determine biopsy positive vs biopsy negative rejection.
time of enrollment

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Samarbejdspartnere

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

29. marts 2023

Primær færdiggørelse (Anslået)

1. februar 2027

Studieafslutning (Anslået)

30. juni 2027

Datoer for studieregistrering

Først indsendt

12. august 2026

Først indsendt, der opfyldte QC-kriterier

12. august 2026

Først opslået (Faktiske)

18. august 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

20. august 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

17. august 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 220773
  • R01HL164995 (U.S. NIH-bevilling/kontrakt)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-delingstidsramme

Study conclusion

IPD-delingsadgangskriterier

We will honor requests for sharing of requested data for non-profit research purposes.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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