Evaluating AT 1501 for kidney transplant patients

A Phase 1b, Multicenter, Open Label Study to Evaluate the Safety, Pharmacokinetics and Efficacy of AT 1501 in Patients Undergoing Kidney Transplant

Phase1; Phase2 Interventional Eledon Pharmaceuticals · NCT05027906

This study is testing if a new treatment called AT 1501 can help prevent kidney transplant rejection in patients getting their first transplant.

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Enrollment48 (estimated)
Ages18 Years to 100 Years
SexAll
SponsorEledon Pharmaceuticals Industry-sponsored
Drugs / interventionsprednisone
Locations9 sites (Cincinnati, Ohio and 8 other locations)
Trial IDNCT05027906 on ClinicalTrials.gov

What this trial studies

This study evaluates the safety, pharmacokinetics, and efficacy of AT 1501 in patients undergoing their first kidney transplant. Up to 24 participants will receive AT-1501 alongside rATG induction therapy and maintenance with corticosteroids and mycophenolate. The goal is to assess how well this treatment can prevent renal allograft rejection in these patients.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older who are receiving their first kidney transplant.

Not a fit: Patients who have previously received a kidney transplant or are undergoing multi-organ transplants will not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could improve kidney transplant outcomes by reducing the risk of organ rejection.

How similar studies have performed: Other studies have explored CD40L inhibitors in transplant settings, showing promise, but this specific approach with AT 1501 is novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Male or female ≥ 18 years of age
2. Recipient of their first kidney transplant from a living or deceased donor
3. Agree to comply with contraception requirements during and for at least 90 days after the last administration of study drug

Exclusion Criteria:

1. Induction therapy, other than study assigned rATG, planned as part of initial immunosuppressive regimen
2. Currently treated with any systemic immunosuppressive regimen, including immunologic biologic therapies, with the exception of 5 mg prednisone or equivalent daily;
3. Previous treatment with AT 1501 or any other anti CD40LG therapy
4. The patient has previously received a bone marrow transplant or any other solid organ transplant, including a kidney, or will be undergoing a multi organ or dual kidney transplant
5. Will receive a kidney with an anticipated cold ischemia time of \> 30 hours;
6. Will receive a kidney from a donor that meets any of the following criteria:

   * Donation after Cardiac Death (DCD) criteria; or
   * Extended Criteria Donor (ECD) criteria, defined as:
   * Is blood group (ABO) incompatible; or
   * Age ≥ 60 years; or Age 50-59 years with any 2 of the following criteria:
   * Death due to cerebrovascular accident
   * History of hypertension
   * Terminal creatinine ≥ 133 μmol/L (1.5 mg/dL)
7. Human leukocyte antigen identical (two haplotype match or zero HLA mismatch) donor
8. Medical conditions that require chronic use of systemic steroids at a dose higher than 5 mg prednisone or equivalent per day
9. History of a TE event, known hypercoagulable state, or condition requiring long term anticoagulation:
10. Positive T- or B-cell crossmatch that is due to HLA antibodies or presence of a DSA at Screening

Where this trial is running

Cincinnati, Ohio and 8 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Prevention of Rejection in Kidney TransplantKidney TransplantRenal Allograft RejectionProphylaxisAT-1501CD40L inhibitorHumanized blocking antibody to CD40LMonoclonal Antibody
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.