Hematologic MalignancyEarly Phase 1NCT06731504
HMCT/CT2401: Abatacept GVHD Prophylaxis Following Omidubicel HCT
A Early Phase 1 study testing Abatacept in people with Hematologic Malignancy, run by Duke University at 1 site in United States.
Trial summary
This study is a single-center, non-randomized, single-arm pilot trial of omidubicel hematopoietic stem cell transplantation (HCT) for hematologic malignancies with myeloablative conditioning chemotherapy of physician's choice followed by abatacept/tacrolimus/mycophenolate mofetil (ABA/Tac/MMF) graft-versus-host… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Hematologic Malignancy
- What is being tested?
- Abatacept
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 10 participants
- Where
- 1 siteUnited States
- Study dates
- 12 Nov 2025to Jul 2028
- Phase
- Early Phase 1
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- A diagnosis of hematologic malignancy with an available cord blood unit for omidubicel product manufacturing
- Adult patients (≥18 at the time of enrollment)
- Adequate organ function for transplant defined as:
- Left ventricular ejection fraction ≥ 40%;
- DLCO, FEV1, FVC > 50% predicted;
- Total bilirubin ≤ 2.5 mg/dL except for patients with Gilbert's syndrome or hemolysis, and ALT, AST, and alkaline phosphatase all < 5 x upper limit of normal (ULN);
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- Serum creatinine within normal range, or if serum creatinine outside normal range, must have measured or estimated creatinine clearance > 40 mL/min/1.73m2;
- Karnofsky performance score ≥ 70; and
- If applicable, > 6 months since a previous autologous transplant.
- Female patients (unless postmenopausal or surgically sterilized) and male patients (even if surgically sterilized) must agree to practice two effective methods of contraception at the same time, or agree to completely abstain from heterosexual intercourse from the time of signing informed consent through 100 days post-transplant. Fertility preservation method will be left to treating physician's discretion.
Who cannot join
- Patients with known sensitivity to dimethyl sulfoxide, dextran 40, gentamicin, human serum albumin or bovine material
- Presence of a donor-specific antibodies with MFI >2000
- Uncontrolled bacterial, fungal or viral infection
- Treatment with any other investigational medical product (medications without any known FDA approved indication) needs to be discussed with the PI for patient eligibility.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
Duke University Health System
Durham, North Carolina, 27705
Jennifer Tichon, +1 919 660 7262, jennifer.tichon@duke.edu
About this study
Official title: A Pilot Trial of Abatacept Based Graft-Versus-Host Disease Prophylaxis Following Omidubicel Hematopoietic Cell Transplantation
This study is a single-center, non-randomized, single-arm pilot trial of omidubicel hematopoietic stem cell transplantation (HCT) for hematologic malignancies with myeloablative conditioning chemotherapy of physician's choice followed by abatacept/tacrolimus/mycophenolate mofetil (ABA/Tac/MMF) graft-versus-host disease (GVHD) prophylaxis. The primary objective is to assess the safety and feasibility of abatacept/tacrolimus/mycophenolate mofetil GVHD prophylaxis following omidubicel HCT.
Target enrollment is 10 participants. Subjects are adults with a diagnosis of hematologic malignancy with an available cord blood unit for omidubicel product manufacturing. Patients will be followed for a total of 18 months and will have research blood draws and Abatacept pharmacokinetics, as well as standard of care assessments that will be reviewed for this study.
It is estimated that 36 months of accrual will be necessary to enroll the targeted sample size with an accrual rate of approximately 1 participant every 3 months. Accrual will be reported by race, ethnicity, gender, and age. Descriptive analyses are planned given the sample size.
- Conditions
- Hematologic Malignancy
- Being tested
- Abatacept
- Medical subject headings
- Hematologic Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
AbataceptDrug
Abatacept is a monoclonal antibody that suppresses T-cell activation through costimulatory blockade. In 2021, abatacept was FDA approved to prevent acute GVHD following allogeneic HCT.
| Study group | Role | What they receive |
|---|---|---|
| Abatacept/tacrolimus/mycophenolate mofetil (ABA/Tac/MMF) following omidubicel HCT | Experimental | Abatacept 10 mg/kg is given on day -1, +5, +14, and +28 in combination with standard of care tacrolimus and mycophenolate mofetil-based GVHD prophylaxis. This regimen will follow an omidubicel transplantation. Receives: Drug: Abatacept |
What is being measured
The primary outcome is the main question the study is designed to answer.
Safety of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as evaluated by frequency of adverse events.
Adverse events are defined by Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0. Only events related to Abatacept (and not solely expected toxicities of omidubicel HCT) will be recorded.
Measured: 6 months post-HCT
Safety of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as evaluated by severity of adverse events.
Adverse events are defined by Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0. Only events related to Abatacept (and not solely expected toxicities of omidubicel HCT) will be recorded.
Measured: 6 months post-HCT
Feasibility of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as evaluated by number of subjects who receive minimum dose of ABA.
Minimum dose is 4 doses of minimum 10mg/kg of abatacept prophylaxis following omidubicel transplant.
Measured: Day 28 post-HCT
Secondary outcomes (11)
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by Severe GVHD-Free and Progression-Free Survival (SRFS).
Severe GVHD-Free and Progression-Free Survival (SRFS) as a time to event outcome is defined as the first event of Grade III-IV acute GVHD or chronic GVHD requiring systemic immune suppression, with underlying disease progression or relapse, and death by any cause.
Measured: 18 months post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by rates of acute GVHD.
Cumulative incidences of Grade II-IV and III-IV acute GVHD will be determined per Glucksberg criteria.
Measured: 18 months post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by rates of chronic GVHD - mild, moderate, and severe per NIH criteria.
The cumulative incidence of chronic GVHD will be determined per NIH Consensus Conference Criteria.
Measured: 18 months post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by hematologic recovery.
Hematologic recovery is defined by achieving both neutrophil and platelet count recovery after transplant. Neutrophil recovery is defined as achieving an absolute neutrophil count (ANC) greater than or equal to 500/mm3 for three consecutive measurements on three different days. Platelet recovery is defined as the first day of a sustained platelet count (1) greater than or equal to 20,000/mm3 or (2) greater than or equal to 50,000/mm3 with no platelet transfusions in the preceding seven days.
Measured: 30 days post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by rates of severe infections at 6 months post-transplant.
The incidence of definite and probable viral, fungal, and bacterial infections will be tabulated.
Measured: 6 months post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by rates of viral reactivations at 6 months post-transplant.
The cumulative incidence of treated CMV and HHV6 reactivation in the first 6 months post-transplant will be described.
Measured: 6 months post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by donor cell engraftment.
Donor cell engraftment will be assessed by donor/recipient chimerism studies. Chimerism may be evaluated in bone marrow, whole unfractionated blood, or blood cell fractions, including CD3 and CD33 or CD15 fraction.
Measured: Day 28, 60, and 90 post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by disease relapse or progression.
Relapse or progression will be diagnosed by bone marrow assessment.
Measured: Day 90 post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by non-relapse mortality (NRM).
NRM is defined as death without evidence of disease progression or recurrence.
Measured: Day 100, 180, and 365 post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by disease-free survival (DFS).
DFS is defined as the time from date of transplant to death or relapse/progression, whichever comes first.
Measured: 18 months post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by overall survival (OS).
OS is defined as the time interval between date of transplant and death from any cause.
Measured: 18 months post-HCT
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Dec 2024
- Study start12 Nov 2025
- Primary completionDec 2027 (estimated)
- Study completionJul 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Hematologic MalignancyStudies of the same condition, open and under way.
- More trials run by Duke UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Early Phase 1
- Primary purpose
- Prevention
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 10 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Duke University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Sanghee Hong, MD, Principal investigator, Duke Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06731504
- Sponsor's protocol ID
- Pro00116015
- Status last verified
- Nov 2026
- First submitted
- 9 Dec 2024
- Last updated
- 6 Nov 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 6 Nov 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Pilot Trial of Abatacept Based Graft-Versus-Host Disease Prophylaxis Following Omidubicel Hematopoietic Cell Transplantation
- ClinicalTrials.gov ID
- NCT06731504
- Acronym / sponsor ID
- Pro00116015
- Conditions
- Hematologic Malignancy
- Phase
- Early Phase 1
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 10 participants (estimated)
- Lead sponsor
- Duke UniversityUniversity, hospital or other
- Study start
- 12 Nov 2025 (actual)
- Primary completion
- Dec 2027 (estimated)
- Study completion
- Jul 2028 (estimated)
- First posted
- 12 Dec 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study is a single-center, non-randomized, single-arm pilot trial of omidubicel hematopoietic stem cell transplantation (HCT) for hematologic malignancies with myeloablative conditioning chemotherapy of physician's choice followed by abatacept/tacrolimus/mycophenolate mofetil (ABA/Tac/MMF) graft-versus-host disease (GVHD) prophylaxis. The primary objective is to assess the safety and feasibility of abatacept/tacrolimus/mycophenolate mofetil GVHD prophylaxis following omidubicel HCT.
Target enrollment is 10 participants. Subjects are adults with a diagnosis of hematologic malignancy with an available cord blood unit for omidubicel product manufacturing. Patients will be followed for a total of 18 months and will have research blood draws and Abatacept pharmacokinetics, as well as standard of care assessments that will be reviewed for this study.
It is estimated that 36 months of accrual will be necessary to enroll the targeted sample size with an accrual rate of approximately 1 participant every 3 months. Accrual will be reported by race, ethnicity, gender, and age. Descriptive analyses are planned given the sample size.
Study design
- Primary purpose
- Prevention
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Abatacept/tacrolimus/mycophenolate mofetil (ABA/Tac/MMF) following omidubicel HCT | Experimental | Drug: AbataceptAbatacept 10 mg/kg is given on day -1, +5, +14, and +28 in combination with standard of care tacrolimus and mycophenolate mofetil-based GVHD prophylaxis. This regimen will follow an omidubicel transplantation. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (10 listed)
- A diagnosis of hematologic malignancy with an available cord blood unit for omidubicel product manufacturing
- Adult patients (≥18 at the time of enrollment)
- Adequate organ function for transplant defined as:
- Female patients (unless postmenopausal or surgically sterilized) and male patients (even if surgically sterilized) must agree to practice two effective methods of contraception at the same time, or agree to completely abstain from heterosexual intercourse from the time of signing informed consent through 100 days post-transplant. Fertility preservation method will be left to treating physician's discretion.
Key exclusion criteria (4 listed)
- Patients with known sensitivity to dimethyl sulfoxide, dextran 40, gentamicin, human serum albumin or bovine material
- Presence of a donor-specific antibodies with MFI >2000
- Uncontrolled bacterial, fungal or viral infection
- Treatment with any other investigational medical product (medications without any known FDA approved indication) needs to be discussed with the PI for patient eligibility.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| AbataceptAbatacept is a monoclonal antibody that suppresses T-cell activation through costimulatory blockade. In 2021, abatacept was FDA approved to prevent acute GVHD following allogeneic HCT. | Drug | Abatacept/tacrolimus/mycophenolate mofetil (ABA/Tac/MMF) following omidubicel HCT |
Primary outcome
Safety of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as evaluated by frequency of adverse events.
Time frame: 6 months post-HCT
Adverse events are defined by Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0. Only events related to Abatacept (and not solely expected toxicities of omidubicel HCT) will be recorded.
Safety of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as evaluated by severity of adverse events.
Time frame: 6 months post-HCT
Adverse events are defined by Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0. Only events related to Abatacept (and not solely expected toxicities of omidubicel HCT) will be recorded.
Feasibility of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as evaluated by number of subjects who receive minimum dose of ABA.
Time frame: Day 28 post-HCT
Minimum dose is 4 doses of minimum 10mg/kg of abatacept prophylaxis following omidubicel transplant.
11 secondary outcomes
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by Severe GVHD-Free and Progression-Free Survival (SRFS).
Time frame: 18 months post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by rates of acute GVHD.
Time frame: 18 months post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by rates of chronic GVHD - mild, moderate, and severe per NIH criteria.
Time frame: 18 months post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by hematologic recovery.
Time frame: 30 days post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by rates of severe infections at 6 months post-transplant.
Time frame: 6 months post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by rates of viral reactivations at 6 months post-transplant.
Time frame: 6 months post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by donor cell engraftment.
Time frame: Day 28, 60, and 90 post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by disease relapse or progression.
Time frame: Day 90 post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by non-relapse mortality (NRM).
Time frame: Day 100, 180, and 365 post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by disease-free survival (DFS).
Time frame: 18 months post-HCT
Efficacy of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as measured by overall survival (OS).
Time frame: 18 months post-HCT
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 Nov 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Sanghee Hong, MD principal investigator
Duke Health
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Early Phase 1 study testing Abatacept in people with Hematologic Malignancy, run by Duke University at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 10 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 6 Nov 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Early Phase 1 (sometimes called Phase 0) studies give a very small amount of a treatment to a few people, mainly to see how the body handles it.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Sanghee Hong, MD (9196848694, sanghee.hong@duke.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Safety of ABA/Tac/MMF GVHD prophylaxis following omidubicel HCT as evaluated by frequency of adverse events. (time frame: 6 months post-HCT). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Nov 2026.