This Study is Assessing the Safety and Efficacy of Immune Inhibition as a Treatment to Prevent Primary Graft Dysfunction

Recruiting now · Phase 2 · Has a placebo group

Conditions studied: Primary Graft Dysfunction, Lung Transplantation, Acute Lung Injury(ALI), Natural Killer Cell Mediated Immunity

In brief

Lung transplant recipient survival lags other solid organ recipients, with the main early cause of death being primary graft dysfunction (PGD). PGD occurs in up to 1/3 of all recipients, is driven by the body's innate immune response, and has no known medical therapies for treatment or prevention. Investigators have recently shown that Natural Killer (NK) cells, a key innate immune cell, are critical in causing PGD. Importantly, the investigators found that Maraviroc, an FDA-approved drug that works to inhibit these immune cells, prevented lung injury in mouse models of PGD. The goal of this clinical trial is to learn if Maraviroc works to treat PGD in Lung Transplant patients who are above the age of 18 and have a PGD risk score greater than 50%. The objectives the study hopes to address are: To address the safety and tolerability of Maraviroc. To test a strategy for PGD enrichment in a lung transplant population. To measure the efficacy and biological efficacy of using Maraviroc. To study the biochemical, physiologic, and molecular effects of the drug on the body. This will be a double blind study where patients will either get the Maraviroc drug or a placebo. Researchers will then compare the two groups to address the above objectives. Participants will: Take drug Maraviroc or a placebo every 12 hours for 3 days post surgery. Follow up will occur during the entire length of stay at UCSF, about 16 days, with a single 12 month follow up once released.

Key facts

Study ID

NCT06853223

Run by

University of California, San Francisco

People needed

120

Starts

2025-12-07

Expected to finish

2028-08-14

Last updated by the study team

2026-01-20

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Male or female ≥18 years of age at the time of lung transplant waitlisting.
• Listed for a bilateral lung transplantation.
• Written informed consent obtained from subject or subject's legal representative and ability for subject to comply with the requirements of the study.
• PGD risk score > 50% at the time of donor organ offer
• Planned induction with basiliximab, mycophenolatge, and prednisone and routine maintenance immunosuppression of tacrolimus, mycophenolate and prednisone.

You may not qualify if…

• Recipient scheduled to receive alternate induction regimen that is cell depleting such as anti-thymocyte globulin or alemtuzumab.
• Active chronic pulmonary infection in the recipient that are considered relative contraindications to lung transplantation such as Burkholderia or Mycobacterium abscessus.
• Recipients receiving HIV, HCV or HBV positive donor organs. Only documented infections are considered exclusion criteria. Recipients receiving increased risk organs will not be excluded.
• Recipient listed for concurrent heart or other solid organ transplantation.
• Presence of a condition or abnormality that in the opinion of the Investigator would compromise the safety of the patient or the quality of the data.

Where it is running

• University of California, San Francisco — San Francisco, California, United States (enrolling)

Full record on ClinicalTrials.gov

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