Study to Use Normothermic Machine Perfusion for Assessing Declined Donor Livers to Reduce Waiting Time for Liver Transplantation
Led by Charite University, Berlin, Germany · Updated on 2026-04-15
186
Participants Needed
10
Research Sites
82 weeks
Total Duration
AI-Summary
What this Trial Is About
This research aims to evaluate whether normothermic machine perfusion NMP can safely increase the number of usable donor livers for transplantation, helping patients get transplants faster and improving outcomes. The study focuses on patients waiting for a liver transplant with a ReMELD-Na-Score of 21 or less, who do not meet certain special exception criteria. It investigates if this new assessment method reduces waiting time and improves survival and health after transplant.
Participants are randomly assigned to one of two groups. The experimental group may receive livers initially declined by all German transplant centers but deemed suitable after at least four hours of NMP quality assessment. The control group receives livers through the usual transplant process. Declined livers are selected based on specific quality criteria such as steatosis less than 60%, fibrosis grade up to F3, and graft weight between 1 and 2.5 kg.
During the study, researchers track how quickly participants receive a transplant as the main outcome. They also monitor survival rates, disease progression, recovery on the waitlist, quality of life, graft utilization, hospital stay costs, and complications up to 24 months after randomization. Participants will be followed for up to 12 months to observe transplant timing and up to 24 months for longer-term outcomes.
CONDITIONS
Brief Title
Assessing Declined Liver Grafts With Normothermic Machine Perfusion to Reduce Transplant Waiting Time
Research Team
N
Nathanael Raschzok, MD
S
Simon Moosburner, MD
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Listed as transplantable for liver transplantation at the study center according to German Medical Association guidelines
ReMELD-Na-Score of 21 or less (equivalent to MELD 25 or below), not eligible for non-standard exceptions
Medically suitable and informed for transplantation with an organ meeting extended donor criteria
Provided written consent to participate
Not participating in another interventional study during this trial
You will not qualify if you...
Listed for retransplantation
Listed as high-urgency for transplant
Listed for combined organ transplantation
Pregnant
Your Study Journey
Screening
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Implementation
Duration - Up to 12 months or until transplantation
Participants in the experimental arm receive declined liver grafts assessed for quality using normothermic machine perfusion before transplantation. Participants in the standard arm are listed for liver transplantation through standard allocation.
Visits occur as needed based on transplant timing
Follow-up
Duration - Up to 24 months after randomization
Participants are monitored for outcomes such as survival, disease progression, and quality of life after transplantation or while on the waitlist.
Periodic follow-up visits up to 24 months
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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Published Research Related To This Trial
Open, prospective, randomised, multicentre trial on quality assessment of declined liver grafts by normothermic ex situ machine perfusion for decreasing time to transplantation (ExTra trial): a study protocol.
Simon Moosburner, Joseph M G V Gassner, Igor M Sauer...