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NCT07368153Recruiting

Safety and Tolerability of IDO-1 Inhibition in the Prevention of EBV-related Pathology in EBV Negative Kidney Transplant Recipients Receiving an Organ From EBV Positive Donors

Summary

This clinical study will evaluate the safety and tolerability of an IDO-1 inhibitor in patients receiving a kidney transplant. The study includes individuals who have not previously been infected with Epstein-Barr virus (EBV) and who receive a kidney from a donor with prior EBV infection. Participants will receive the IDO-1 inhibitor or placebo in addition to standard medical care and will be monitored for side effects and other safety-related outcomes throughout the study.

Inclusion criteria

1. Willing and able to provide informed consent 2. Male or female aged ≥18 years 3. EBV seronegative at the time of renal transplant 4. If women of child-bearing potential (WOCBP), participants must have a negative serum pregnancy test at screening and inclusion, and must be willing to use a highly effective method of birth control for the duration of the study. Acceptable methods of contraception: 1. Hormonal contraception associated with inhibition of ovulation 2. Intrauterine device (IUD) 3. Intrauterine hormone-releasing system (IUS) 4. Bilateral tubal occlusion 5. Vasectomised partner 6. Condom with spermicide 7. Sexual abstinence, in line with the preferred and usual lifestyle of the participant. Periodic abstinence (such as calendar, ovulation, symptothermal, post-ovulation methods) and withdrawal are not acceptable methods of contraception. 5. If male, participants must be prepared to use reliable barrier method contraception and a second method such as spermicide for the duration of the study unless surgically sterile.

Exclusion criteria

1. EBV seropositivity at the time of transplant 2. Participants with any form of cancer within the last 12 months, or patients continuing to receive chemo or immunotherapy within the last 12 months. 3. Participants with a history of PTLD 4. Other active systemic infections requiring treatment prior to and at the time of baseline. Prophylactic agents are permitted. 5. CYP3A4 and CYP2C28 Inhibitors and Inducers (List may be found in Appendix 1) 6. Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) ≥3 x ULN 7. Any condition for which, in the opinion of the investigator, the treatment or participation in the study may pose a health risk to the participant 8. Planned or active participation in any other study with an investigational medicinal product (IMP). 9. Have taken an IMP within the last 3 months. 10. Unwilling or unable to provide fully informed consent. 11. Unwilling or unable to comply with study procedures.

Contacts

The trial team's contact details are shown on request.

See the official trial record
Status
Recruiting
Phase
Phase 2
Study type
Interventional
Countries
Switzerland
Sponsor
University Hospital, Basel, Switzerland(Other)
Protocol no.
2025-02366; ub24hess
Conditions
EBV Infections, Kidney Transplant
Interventions
Drug

Treatments studied

  • indoleamine 2,3-dioxygenase 1 (IDO-1) inhibitor
  • placebo

Collaborators

Hornet Therapeutics.

Locations · 1

  • Bern, SwitzerlandUniversity Hospital BernRecruiting at this site

In total, worldwide, 1 of the 4 sites listed in the registry is recruiting; the other 3 are not currently recruiting.

Site status per the ClinicalTrials.gov registry (last update posted: August 25, 2026).

This status may have changed and says nothing about your eligibility: before taking any step, check with your oncologist or the site.

Other identifiers

  • 2025 · NIH grant

See also

Other versions

These results are indicative and do not replace medical advice — discuss them with your doctor.