Warm-Up for kidneys: could a machine bath boost transplant success?
NCT ID NCT05782543
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times
Summary
This study tests whether giving a donor kidney a 4-6 hour warm bath on a machine (normothermic machine perfusion) right before transplant helps it work better a year later. The trial includes 240 adults receiving a kidney from a donor aged 50 or older. Half get the standard cold storage, half get the extra warm perfusion.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Normothermic machine perfusion (a procedure that warms and pumps the kidney before transplant)
- What this could lead to
- If it works, this could improve kidney function after transplant and reduce complications like delayed graft function.
- What could go wrong
- This is a mid-stage trial with 240 participants, so results may not apply to all patients. The procedure adds time and complexity, and benefits are not guaranteed.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 240 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2024
- Expected to finish
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May 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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50 to 100 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients receiving their first or second kidney transplant; * Patients receiving a graft from a ≥ 50-year-old donor; * Patients receiving a graft from a DCD or DBD donor; * Patients receiving a kidney transplant in the UMCG, the Erasmus MC, or the LUMC; * Patients receiving a graft stored on HMP; * Patients ≥ 18 years of age; * Patients having provided written informed consent. Exclusion Criteria: * Patients receiving their third or subsequent kidney transplant; * Patients receiving a graft from a donor \< 50 years; * Patients receiving a graft not stored on HMP; * Patients receiving a graft from a donor that underwent normothermic regional perfusion (NRP); * Patients receiving a kidney transplant in another center than the UMCG, Erasmus MC, or LUMC; * Patients receiving a multi-organ transplantation; * Patients receiving a kidney with complex arterial anatomy (3 or more arteries); * Recipients \< 18 years of age.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
3 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Erasmus Medical Center
RECRUITINGRotterdam, Netherlands
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Leiden University Medical Center
NOT_YET_RECRUITINGLeiden, Netherlands
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University Medical Center Groningen
RECRUITINGGroningen, Provincie Groningen, Netherlands
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