BZLF1 peptide vaccine with QS-21 to prevent EBV-related cancers in patients awaiting organ transplants
Official title: A Phase 1B Double Blinded Randomized Trial Evaluating Safety, Tolerability, and Immune Response of OSU-2131 a BZLF1 Peptide Vaccine With Stimulon™ QS-21 Solution Adjuvant in Healthy Volunteers and Patients Awaiting Solid Organ Transplantation
Run by Ohio State University Comprehensive Cancer Center · NCT06741072 · Data updated 2026-11-12
This early-phase trial tests a BZLF1-based vaccine (OSU-2131) with QS-21 to see if it is safe and can help prevent EBV infection and related cancers in healthy people and in patients waiting for a solid organ transplant.
Quick facts
| Phase | Phase 1 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 65 Years |
| Sex | All |
| Enrollment | 55 (estimated) |
| Sponsor | Ohio State University Comprehensive Cancer Center Academic / other |
| Locations | 1 site (Columbus, Ohio) |
| Status | Recruiting |
| Started | June 28, 2026 |
| Main results expected | July 31, 2027 |
| Study ends | December 31, 2027 |
| Registry record updated | July 2, 2026 |
| Trial ID | NCT06741072 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are healthy volunteers and patients awaiting solid organ transplantation who meet eligibility criteria (e.g., EBV serostatus, HLA-B*08:01 presence, HIV/HBV/HCV negative, and suitable baseline labs).
✕Probably not a fit
Patients who do not develop a favorable immune response or who experience unacceptable toxicity may not receive a benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This Phase 1B study explores the safety and tolerability of three dose levels of OSU-2131 with QS-21 in healthy volunteers and patients awaiting solid organ transplantation. It also aims to identify the optimal immunologic dose and to collect laboratory data on immune responses. The trial uses a dose-escalation design followed by a dose-expansion in participants who proceed to transplant. The primary goal is to characterize safety across dose levels, with secondary goals including determining the best dose to elicit an immune response and generating de-identified data for future vaccine research.
Why it matters
Potential benefit: If successful, the vaccine could strengthen EBV-specific immunity and potentially reduce EBV-related cancer risk after transplantation.
How similar studies have gone: Prior vaccine approaches using peptide-based vaccines with adjuvants have shown safety signals in early studies, but EBV-related cancer prevention in transplant settings remains under investigation.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Healthy volunteers and patients awaiting solid organ transplantation (SOT) must have at least one allele for HLA-B\*08:01 * Subjects can be Epstein-Barr virus (EBV) seronegative or seropositive * Subjects must be seronegative for HIV * Subjects must be seronegative for hepatitis B and C * Have baseline chemistry and hematology (hemoglobin, white blood cells, absolute neutrophil count, eosinophils) within normal limits * Prothrombin time (PT) and partial thromboplastin time (PTT) below the upper limit of normal * Platelets above the lower limit of normal (LLN) * Basophils, lymphocytes, and monocytes must be within 1.2 x upper limit of normal (ULN) or 0.8 x LLN and considered not clinically significant by the investigator * Total creatine kinase (CK) laboratory values \< 1.25 x the upper limit of normal (according to the normal reference ranges of the Ohio State University \[OSU\] laboratory) at baseline (screening \& pre-study visit) and considered not clinically significant by the investigator * Subjects must not be taking antiviral therapy * Must be ≥ 18 years of age and ≤ 65 years of age and willing to either use an effective method of contraception or abstain from sexual activity for at least 3 months following the last dose of vaccination * Female of childbearing potential must have a negative serum pregnancy test prior to the first study drug/placebo (PBS) administration * Agree not to receive any other investigational drug while enrolled in this study * Provide written informed consent according to International Conference on Harmonization-Good Clinical Practice (ICH-GCP) and local regulations * Following successful completion of safety evaluation for the phase 1 dose escalation phase of this trial in healthy volunteers and review of this data by the Sponsor and Food and Drug Administration (FDA), we plan to enroll a second cohort of patients awaiting solid organ transplantation (SOT). We will recruit patients with end stage renal disease (ESRD) who are awaiting kidney transplantation. ESRD is defined according to 2012 Kidney Disease: Improving Global Outcomes (KDIGO) Clinical Practice Guidelines for the Evaluation and Management of Chronic Kidney Disease (Acosta-Ochoa et al, J Clin Med, 8(9):1323, 2019). KDIGO defines ESRD as: stage 4: severe reduction in glomerular filtration rate (GFR) (15 to 29 mL/min); stage 5: renal failure (GFR less than 15 mL/min). Patients will qualify for ESRD / kidney transplantation per need for maintenance dialysis due to one or more of the criteria related to renal insufficiency: volume overload, metabolic acidosis, electrolyte disturbance, drug toxicity, etc. Patients will be regularly undergoing hemodialysis or peritoneal dialysis for metabolic support. Patients will be excluded from the study if they have any unstable medical conditions which the investigator believes would preclude participation in the study. These conditions include but are not limited to cardiorenal and hepatorenal syndromes Exclusion Criteria: * Severe active infection, compromised cardiopulmonary function, or other serious medical illness that, in the opinion of the principal investigator, would prevent study completion * History of chronic active EBV infection, active infectious mononucleosis (or infectious mononucleosis within 6 months of enrollment), or other EBV-related disorder as determined by principal investigator (PI) * History of immune suppression or autoimmune disorder * Concomitant use of systemic corticosteroids or other immunosuppressive medications (including nasal and inhaled steroids). The use of nasal steroids for seasonal rhinitis is acceptable * Pregnant or breastfeeding subjects * For patient enrollment on the second cohort, "patients awaiting SOT", we will consider patients awaiting kidney transplantation who are receiving maintenance renal replacement therapy (dialysis). Most patients on routine renal replacement therapy (dialysis) will present with stable chemistry, acid base balance, volume status and clear mental status. For patients who are non-compliant with routine dialysis, laboratory abnormalities and acid base, volume status can become abnormal. Specific dose limiting toxicity (DLT) criteria that may relate to patients with ESRD include laboratory parameters that may altered due to missed dialysis session(s). Most laboratory abnormalities in such patients can be corrected by restarting dialysis or blood transfusions. Outside these specific variables, we do not expect to see specific DLT criteria for patients with ESRD on this study. Metabolic derangement such as acid base imbalance, hyperkalemia and volume overload as a result of missing dialysis session. Study stopping rule for subjects awaiting organ transplant: Occurrence of this event in two or more subjects should result in study pause. Patients who are unable to adhere to routine dialysis will be excluded from the study if they have any unstable medical conditions which the investigator believes would preclude participation in the study. These conditions include but are not limited to cardiorenal and hepatorenal syndromes
Where it's running
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Ohio State University Comprehensive Cancer Center
Columbus, Ohio, United States Recruiting
Study contacts
- Principal investigator: Timothy J Voorhees, MD — Ohio State University Comprehensive Cancer Center
- Study coordinator: The Ohio State University Comprehensive Cancer Center
- Email: OSUCCCClinicaltrials@osumc.edu
- Phone: 800-293-5066
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.