Double-Barreled attack: Gene-Edited stem cells and CAR T-Cells take on tough leukemia
NCT ID NCT05945849
First seen Jul 09, 2026 · Last updated Jul 10, 2026 · Updated 1 time
Summary
This trial tests a two-part treatment for people with acute myeloid leukemia (AML) that has not responded to standard therapy. First, patients receive a stem cell transplant from a healthy donor, but the stem cells are gene-edited to hide from the second treatment: specially engineered CAR T-cells designed to seek and destroy leukemia cells. The goal is to make the transplant safer and more effective by protecting healthy bone marrow from the CAR T-cells.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- gene-edited stem cells (CD33KO-HSPC) and CAR T-cells (CART33)
- What this could lead to
- If successful, this approach could offer a new treatment option for people with hard-to-treat acute myeloid leukemia by making stem cell transplants safer and more effective.
- What could go wrong
- This is an early phase 1 trial with only 16 participants, so safety and effectiveness are not yet proven. There are risks from the stem cell transplant and CAR T-cell therapy, including serious side effects.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 16 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2024
- Expected to finish
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Feb 2044
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Male or female 18 years of age or older 2. Subjects with AML unlikely to be cured with currently available therapies 1. AML that has not achieved a complete remission or morphologic leukemia free state by ELN criteria; partial remission or refractory disease (including primary refractory) are eligible; OR: 2. AML relapsed following allogeneic stem cell transplantation (including MDS evolved to AML post-allogeneic stem cell transplantation). Note: morphologic relapse is not required; persistent/recurrent disease-associated molecular, phenotypic or cytogenetic abnormalities (measurable residual disease, MRD) at any time after allogeneic HCT is eligible; OR: 3. Subjects with relapsed disease after prior transplant must be off systemic immunosuppression for at least 1 month at the time of enrollment. 3. Subjects must have a suitable stem cell donor. 4. Satisfactory organ function 1. Creatinine clearance \> 40 ml/min 2. ALT/AST must be ≤ 5x upper limit of normal unless related to disease and \< 20 x upper limit of normal if related to disease 3. Direct bilirubin \< 2.0 mg/dl, unless subject has Gilbert's syndrome (≤ 3.0 mg/dL) 5. Left ventricular ejection fraction ≥ 40% as confirmed by echocardiogram or MUGA 6. DLCO \> 45% predicted 7. ECOG performance status 0-1 8. Written informed consent is given 9. Subjects of reproductive potential must agree to use acceptable birth control methods Exclusion Criteria: 1. Pregnant or lactating (nursing) women 2. Active hepatitis B or hepatitis C or HIV infection 3. Concurrent use of systemic steroids or immunosuppressant medications 4. Any uncontrolled active medical disorder that would preclude participation as outlined 5. Subjects with signs or symptoms indicative of CNS involvement. 6. Known history of allergy or hypersensitivity to study product excipients (human serum albumin, DMSO, and Dextran 40) 7. Class III/IV cardiovascular disability according to New York Heart Association Classification 8. Subjects with clinically apparent arrhythmia, or arrhythmias that are not stable on medical management, within 2 weeks of the screening/enrollment visit.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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University of Pennsylvania
RECRUITINGPhiladelphia, Pennsylvania, 19104, United States
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- New combo aims to boost survival in older AML patients
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- New hope for older AML patients: triple drug combo aims to control disease and prevent relapse