- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT07805343
Extended Validation of Donor-derived Cell-free DNA in Kidney Transplant Recipients (VALiDATE)
Multinational Study to Evaluate the Performance of Donor-derived Cell-free DNA in Detecting Kidney Allograft Rejection Across Context of Use, Populations, and Injury Phenotypes
This is a multinational, multi-center, observational cohort study.
Kidney allograft rejection is poorly detected by standard-of-care biomarkers. Although dd-cfDNA has been associated with improved rejection detection when added to standard-of-care biomarkers and clinical parameters, little is known about its performance across Banff 2022 rejection phenotypes and injury patterns, in various clinical scenarios and populations, and when measured repeatedly over time.
Aperçu de l'étude
Statut
Intervention / Traitement
Description détaillée
Allograft rejection remains a leading cause of kidney transplant failure, and standard-of-care monitoring detects it late.
Recently, combining dd-cfDNA with functional, immunological and clinical parameters has been shown to improve rejection detection under the Banff 2019 framework. However, the Banff 2022 revision formally recognized microvascular inflammation without DSA or C4d (MVI, DSA-negative, C4d-negative) and probable antibody-mediated rejection as distinct rejection phenotypes, raising the question of whether dd-cfDNA can help detecting these phenotypes. Its performance also remains unclear across the broader spectrum of Banff rejection phenotypes and injury patterns, when the complete diagnostic workup is unavailable, in the early post-transplant period, in specific populations, and when measured repeatedly over time.
The investigators therefore aim to evaluate the association between dd-cfDNA and Banff rejection phenotypes and its added diagnostic value to detect them, across the clinical situations in which the biomarker is used.
The study has three objectives:
- To assess the association between dd-cfDNA and Banff 2022 rejection phenotypes and injury patterns, including antibody-mediated, T cell-mediated and mixed rejection, borderline changes, probable antibody-mediated rejection and MVI, DSA-negative, C4d-negative, together with its relationship to the severity of the underlying lesions, with particular attention to microvascular inflammation.
- To assess the diagnostic value of dd-cfDNA, alone and within the integrative dd-cfDNA model, for the detection of biopsy-proven rejection as defined by the Banff 2022 classification, and beyond standard-of-care monitoring.
- To assess whether this performance is maintained across clinical scenarios and populations, including incomplete diagnostic workup, the first month post-transplant, delayed graft function, and specific subpopulations.
Secondarily, the investigators aim to assess whether serial dd-cfDNA improves the detection of rejection, and its prognostic value for death-censored allograft failure.
Type d'étude
Inscription (Estimé)
Contacts et emplacements
Lieux d'étude
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Berlin, Allemagne
- Department of Nephrology and Internal Intensive Care Medicine, Charité Universitätsmedizin Berlin
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Leuven, Belgique
- Department of Nephrology and Renal Transplantation, University Hospitals Leuven, Leuven, Belgium
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São Paulo, Brésil
- Nephrology Division, Hospital do Rim, Fundação Osvaldo Ramos, Federal University of São Paulo, São Paulo, Brazil
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Seoul, Corée du Sud
- Division of Nephrology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
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Barcelona, Espagne
- Translational Nephrology and Kidney Transplant Research Laboratory, Vall d'Hebron Research Institute (VHIR), Barcelona, Spain
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Paris, France
- Hopital Necker
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Paris, France, 75015
- Department of Nephrology and Dialysis, Hôpital Européen Georges-Pompidou, Assistance Publique-Hôpitaux de Paris, Université Paris Cité, Paris, France
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Paris, France
- 11- Pediatric Nephrology Department, Robert-Debré Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
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Paris, France
- Kidney Transplant Department, Saint-Louis Hospital, Assistance Publique - Hôpitaux de Paris;
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Toulouse, France
- Department of Nephrology-Dialysis-Transplantation, CHU de Toulouse, Toulouse, France
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Geneva, Suisse, 1205
- Service de Néphrologie, Département de Médecine, Hôpitaux Universitaires de Genève, Geneva, Switzerland
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California
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Los Angeles, California, États-Unis, 90048
- Department of Medicine, Division of Nephrology, Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA, USA
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Los Angeles, California, États-Unis, 90048
- Department of Pediatrics, Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, California, USA.
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Los Angeles, California, États-Unis, 90095
- Division of Nephrology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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Florida
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Tampa, Florida, États-Unis, 33606
- Department of Nephrology, Tampa General Hospital, Tampa, FL, USA
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Georgia
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Atlanta, Georgia, États-Unis, 30322
- Division of Pediatric Nephrology, Emory University School of Medicine, Atlanta, GA, USA
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Missouri
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St Louis, Missouri, États-Unis, 63110
- Division of Nephrology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
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St Louis, Missouri, États-Unis, 63110
- Division of Pediatric Nephrology, Washington University School of Medicine and St. Louis Children's Hospital, St. Louis, MO, USA
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New York
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New York, New York, États-Unis, 10065
- Division of Nephrology, Weill Cornell Medical College, NewYork-Presbyterian Hospital, New York, NY, USA
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Ohio
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Cleveland, Ohio, États-Unis, 44195-0001
- Cleveland Clinic, 2050 East 96th Street, Cleveland, OH
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Texas
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Dallas, Texas, États-Unis, 75390-8856
- Department of Medicine, Division of Nephrology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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Utah
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Murray, Utah, États-Unis, 84107
- Transplant Services, Intermountain Medical Center, Murray, UT, USA
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Salt Lake City, Utah, États-Unis, 84132
- Division of Nephrology, Department of Medicine, University of Utah Health, Salt Lake City, UT, USA
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Virginia
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Richmond, Virginia, États-Unis, 23219
- Division of Nephrology, Virginia Commonwealth University, Richmond, VA, USA
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Wisconsin
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Madison, Wisconsin, États-Unis, 53705
- Department of Medicine, Division of Nephrology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Enfant
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Recipients transplanted from a deceased or living donor
- Kidney allograft biopsy concomitantly with dd-cfDNA measurement
- Written informed consent at the time of transplantation for inclusion the center database
Exclusion Criteria:
- Combined organ transplantation
- Pregnant women
- Grafts from monozygotic twins
- Recipient of a bone marrow transplant
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
Intervention / Traitement |
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French Cohort
Necker and Saint Louis Hospitals Kidney Transplant Recipients Cohorts
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Cell-free DNA (cfDNA) is fragmented extracellular DNA released in the bloodstream from cells undergoing apoptosis or necrosis.
In transplantation, donor-derived cfDNA (dd-cfDNA) is detected in the blood of kidney recipients and has been proposed as a noninvasive biomarker to detect rejection.
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External Validation Cohort
Multinational cohort comprising transplant centers across Europe, North America, South America and Asia (see involved transplant centres in contacts and locations).
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Cell-free DNA (cfDNA) is fragmented extracellular DNA released in the bloodstream from cells undergoing apoptosis or necrosis.
In transplantation, donor-derived cfDNA (dd-cfDNA) is detected in the blood of kidney recipients and has been proposed as a noninvasive biomarker to detect rejection.
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
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Allograft active injury
Délai: Periprocedural (At time of biopsy)
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Antibody-mediated rejection (active or chronic active) T cell-mediated rejection (active or chronic active) Mixed rejection Microvascular Inflammation, DSA-negative, C4d-negative Probable AMR
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Periprocedural (At time of biopsy)
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
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Allograft loss
Délai: Rate of participants reaching graft loss between transplantation and last follow up (up to 10 years post-transplant)
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Return to dialysis or re-transplantation
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Rate of participants reaching graft loss between transplantation and last follow up (up to 10 years post-transplant)
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Collaborateurs et enquêteurs
Publications et liens utiles
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Autres numéros d'identification d'étude
- VALIDATE
Plan pour les données individuelles des participants (IPD)
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Informations sur les médicaments et les dispositifs, documents d'étude
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