Phase I/II Clinical Trial of Universal Donor CD33 CAR Natural Killer Cells for AML

Brief summary

This phase 1/2 study is testing a new treatment for acute myeloid leukemia (AML) that has come back or has not responded to other treatments. The treatment uses specially modified immune cells (called CD33 CAR-NK cells) from a healthy, unrelated donor to attack the cancer. The first part of the study (Phase I) will focus on finding the safest and most effective dose. The second part (Phase II) will test how well the treatment works at that dose. Patients will undergo screening, chemotherapy (Fludarabine and Cytarabine, in combination with Venetoclax) followed by the infusion of the CD33 CAR NK cells. Some patients may receive 2 doses of CD33 CAR NK cells infused 1 week apart. The investigator will let participants know if they will receive 1 or 2 doses. Patients will be hospitalized for the chemotherapy and CD33 CAR NK cell infusion for close monitoring and will remain in the hospital until blood counts recover. If patients are discharged from the hospital before day 35, they will be followed in clinic weekly for blood work and a physical exam. A bone marrow biopsy will be performed around day 28-35 to see if the patient's leukemia is in remission. Lumbar puncture or imaging may also be done if the study doctor thinks it is necessary. Patients will continue to be followed for research studies and clinical outcomes (leukemia relapse, survival) for 1 year. After 1 year, patients will have completed their study participation, but can be monitored for up to 15 years for potential long term side effects of the cell therapy. Some patients may undergo a bone marrow transplant after the study treatment. Patients who proceed to bone marrow transplant will have one blood sample drawn about a month after the transplant and then will have completed study participation.

Source: ClinicalTrials.gov (U.S. National Library of Medicine), data processed 2026-10-29T09:00:05; modifications: selected fields only; whitespace normalized; brief summary truncated to 2,000 characters. Not a U.S. Government endorsement.

Trial details

acronym

CD33 CAR NK

status

NOT_YET_RECRUITING

phase

PHASE1, PHASE2

study type

INTERVENTIONAL

enrollment

42

sponsor

Nationwide Children's Hospital

conditions

Relapsed/Refractory AML

interventions

BIOLOGICAL: Universal donor derived CD33 CAR-NK

start date

2026-04-01

start date type

ESTIMATED

primary completion date

2032-07-01

has results

false

data source

ClinicalTrials.gov

data processed

2026-10-29T09:00:05

modifications

selected fields only; whitespace normalized; brief summary truncated to 2,000 characters