Collecting data to improve liver transplantation predictions
Official title: Data Collection to Design and Validate LEOPARD Predictive Models of Delisting in Liver Transplant Candidates
Run by Assistance Publique - Hôpitaux de Paris · NCT06675604 · Data updated 2026-11-12
This study is trying to use AI to better predict which liver transplant candidates are at risk of dropping out of the waitlist, so that more people can get fair access to transplants across Europe.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 70 Years |
| Sex | All |
| Enrollment | 4500 (estimated) |
| Sponsor | Assistance Publique - Hôpitaux de Paris Academic / other |
| Locations | 53 sites (Vienna and 52 other locations) |
| Status | Recruiting |
| Started | February 4, 2025 |
| Main results expected | March 2028 |
| Study ends | February 4, 2029 |
| Registry record updated | July 29, 2026 |
| Trial ID | NCT06675604 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates for this study are adults aged 18 to 70 who are listed for liver transplantation due to decompensated cirrhosis, other chronic end-stage liver diseases, or hepatocellular carcinoma.
✕Probably not a fit
Patients who are not listed for liver transplantation or those outside the specified age range may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study is part of the LEOPARD European project aimed at developing and validating new predictive models for mortality among liver transplantation candidates. The study addresses the limitations of current MELD-based allocation systems, which have become less accurate in predicting mortality and dropout rates on the waitlist. By utilizing AI and machine learning, the project seeks to identify patients at the highest risk of dropout, thereby improving equity in access to liver transplantation across Europe. Data will be collected from various European centers to support the development of these predictive models.
Why it matters
Potential benefit: If successful, this study could lead to more accurate predictions for liver transplantation candidates, ultimately improving patient outcomes and access to transplants.
How similar studies have gone: Other studies have shown success in using predictive modeling for liver transplantation, but this approach aims to enhance existing methods with advanced AI techniques.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Adult \[age 18;70\] patients listed for: * decompensated cirrhosis as primary diagnosis, irrespective of liver disease etiology (subset 1) OR * other chronic end-stage liver diseases requiring LT, to be listed under a MELD-based allocation system (examples: primary biliary cholangitis, primary sclerosing cholangitis etc…) (subset 2) OR * HCC\* as primary diagnosis, whatever the etiology of the underlying liver disease with or without underlying cirrhosis (subset 3). (HCC diagnosed on Barcelona/EASL criteria or histologically proven. HCC meeting or not Milan criteria, as per center practice.) * Patients registered on national waiting lists under the MELD offering schemes, regardless of extra MELD points and MELD exceptions are affected or not. * Patient (or trusted person, family member or close relation, if the patient is unable to be informed) who has been informed and did not express opposition to data collection (\*Of note, enrolment of patients with T1 tumors (1 single tumor \< 2 cm diameter) not amenable to loco-regional therapies because of decompensation, and prioritized under the MELD system, will be allowed in Subset 1.) Exclusion Criteria: * Tumor vascular invasion (portal or hepatic veins) evidenced by imaging at pre transplantation work-up, including portal vein thrombosis stage 1 * Extra-hepatic metastasis of HCC, as assessed by sectional imaging, functional imaging (18 FDG PET CT/MRI) or histologically proven * Patients who are under safeguard of justice or tutorship or curatorship * Patient on AME (state medical aid) * Participation to LEOPARD PVC 1 study of WP2
Where it's running
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Universitätsklinik für Allgemeinchirurgie, Klinische Abteilung für Transplantation
Vienna, Austria Recruiting -
Hôpital Erasme Université Libre de Bruxelles
Brussels, Belgium Recruiting -
Department of Gastroenterology and Hepatology Universitair Ziekenhuis Gent
Ghent, Belgium Recruiting -
Cliniques Universitaires Saint-Luc (UCLouvain)
Leuven, Belgium Recruiting -
UZ Leuven
Leuven, Belgium Recruiting -
CHU Liège
Liège, Belgium Recruiting
Show 44 more locations
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CHU Jean Minjoz Besançon, Department of Hepatology
Besançon, France Recruiting -
CHU Trousseau Tours, Department of Hepatology
Chambray-lès-Tours, France Recruiting -
CHU Beaujon, Department of Hepatology
Clichy, France Recruiting -
Hospital Henri Mondor, Department of Hepatology
Créteil, France Recruiting -
CHU Dijon, Department of Hepatology
Dijon, France Recruiting -
CHRU Huriez Lille, Department of Hepatology
Lille, France Recruiting -
CHU Lyon Croix Rousse, Department of Hepatology
Lyon, France Recruiting -
CHU La Timone AP-HM, Department of Hepatology
Marseille, France Recruiting -
CHRU Montpellier Saint Eloi, Department of Hepatology
Montpellier, France Recruiting -
CHU L'Archet Nice, Department of Hepatology
Nice, France Recruiting -
CHU La Pitié Salpêtrière, Department of Hepatology
Paris, France Recruiting -
CHU Bordeaux Haut Levêque, Department of Hepatology
Pessac, France Recruiting -
CHU Pontchaillou Rennes, Department of Hepatology
Rennes, France Recruiting -
CHRU Strasbourg, Chirurgie Hepato-bilio-pancreatique et transplantation hepatique Department
Strasbourg, France Recruiting -
CHU Purpan Toulouse, Department of Hepatology
Toulouse, France Recruiting -
CHU Paul Brousse, Department of Hepatology
Villejuif, France Recruiting -
Department for General, Visceral, Pediatric and Transplant Surgery, Universitätsklinikum Aachen
Aachen, Germany Recruiting -
Charité - Universitätsmedizin Berlin
Berlin, Germany Recruiting -
Gastroenterology, Hepatology, Infectious Diseases and Endocrinology (GHIE) Medizinische Hochschule Hannover
Hanover, Germany Recruiting -
Universitätsklinikum Jena
Jena, Germany Recruiting -
Universitätsklinikum Schleswig - Holstein | UKSH · Transplantation Medicine
Kiel, Germany Recruiting -
Universität Leipzig
Leipzig, Germany Recruiting -
Klinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsklinikum Münster
Münster, Germany Recruiting -
Klinik für Allgemeine, Viszeral- und Transplantationschirurgie, Universitätsklinikum Tübingen
Tübingen, Germany Recruiting -
Universitätsklinikum Würzburg
Würzburg, Germany Recruiting -
Università Politecnica delle Marche
Ancona, Italy Recruiting -
Aou Policlinico di Bari
Bari, Italy Recruiting -
Hepatobiliary Surgery and Transplant Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna
Bologna, Italy Recruiting -
Ospedale Policlinico San Martino
Genova, Italy Recruiting -
Division of General Surgery & Abdominal Transplantation, Asst Grande Ospedale Metropolitano Niguarda
Milan, Italy Recruiting -
Fondazione IRCCS Istituto Nazionale dei Tumori
Milan, Italy Recruiting -
Hepato-Pancreato-Biliary Surgery and Liver Transplantation, Azienda Ospedaliero Universitaria Policlinico di Modena
Modena, Italy Recruiting -
Azienda Ospedaliera di Rilievo Nazionale A. Cardarelli
Naples, Italy Recruiting -
Azienda Ospedale - Università Padova
Padova, Italy Recruiting -
Gastroenterology department, Istituto Mediterraneo per i Trapianti Ismett IRCCS
Palermo, Italy Recruiting -
Hepatobiliary Surgery and Liver Transplantation, Azienda Ospedaliero Universitaria Pisana (Via Paradisa)
Pisa, Italy Recruiting -
Azienda Ospedaliero Universitaria Policlinico Umberto I di Roma
Roma, Italy Recruiting -
Hospital tor Vergata Roma
Roma, Italy Recruiting -
Azienda Ospedaliera San Camillo-Forlanini
Rome, Italy Recruiting -
Dipartimento di chirurgia generale e specialistica e dei trapianti, Università degli Studi di Torino
Torino, Italy Recruiting -
Università Degli Studi di Udine
Udine, Italy Recruiting -
Liver Transplant Unit, Surgery and Oncology, University of Verona
Verona, Italy Recruiting -
Center for Liver Tumors Leiden of the Leiden University Medical Center (LUMC)
Leiden, Netherlands Recruiting -
Gastroenterology and Hepatology, Rotterdam Erasmus Medical Center
Rotterdam, Netherlands Recruiting
+3 more sites. See ClinicalTrials.gov for the full list.
Study contacts
- Study coordinator: Christophe DUVOUX, MD-PHD
- Email: christophe.duvoux@aphp.fr
- Phone: 01 49 81 23 25
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
LEOPARD: Predicting liver transplant dropout with AI in European patients
This project tests new AI-based models to predict which liver transplant candidates are at highest risk of dropout or death while on the waitlist.
-
Seladelpar and Cilofexor in Primary Biliary Cholangitis (PBC)
This study tests whether combining seladelpar with cilofexor helps people with primary biliary cholangitis more than seladelpar alone or placebo.
-
Austrian PBC Registry
This registry follows adults with primary biliary cholangitis in Austrian centers to see how the disease develops over time and how biomarkers relate to complications and symptoms.
-
Combining IV immunotherapy with liver-directed procedures to downstage hepatocellular carcinoma
This tests whether giving IV immunotherapy (tremelimumab plus durvalumab) together with a liver-directed procedure (Y90, TACE, or RFA) can shrink or control hepatocellular carcinoma in adults with intermediate or advanced disease so more people may become eligible for liver transplant.
-
Biochemical response and health outcomes in people with primary biliary cholangitis
We will follow adults with primary biliary cholangitis who are taking ursodeoxycholic acid (UDCA) to see if their alkaline phosphatase levels after treatment predict how long they stay free of complications.
-
Saroglitazar Magnesium for PBC with incomplete UDCA response or intolerance
This study tests whether Saroglitazar Magnesium can help people with primary biliary cholangitis who still have high alkaline phosphatase despite UDCA or cannot take UDCA.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.