Could 'Peacekeeper' cells free liver transplant patients from lifelong drugs?
NCT ID NCT03577431
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This early-phase trial tests whether infusing specially grown donor-specific regulatory T cells (Tregs) can allow liver transplant recipients to safely reduce or stop their anti-rejection medications. Nine participants will receive a single dose of these cells and be monitored for side effects and whether they can maintain a healthy liver without standard immunosuppression. The goal is to see if this cellular therapy can induce 'operational tolerance'—a state where the body accepts the donor organ without needing lifelong drugs.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- donor-specific regulatory T cells (arTreg-CSB)
- What this could lead to
- If successful, this could allow some liver transplant recipients to stop or reduce lifelong anti-rejection medication without rejecting the organ.
- What could go wrong
- This is a very early, tiny trial (9 people) focused on safety, not proof of effectiveness. The approach may not work or could cause unexpected side effects.
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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.
Contacts and locations
Locations
-
Massachusetts General Hospital: Transplantation
Boston, Massachusetts, 02114, United States
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