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

NCT07026942 · Status: NOT_YET_RECRUITING · Phase: PHASE1/PHASE2 · Type: INTERVENTIONAL · Enrollment: 42

Last updated 2025-11-12

No results posted yet for this study

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.

Conditions

  • Relapsed/Refractory AML

Interventions

BIOLOGICAL

Universal donor derived CD33 CAR-NK

Universal donor derived CD38KO CD33 CAR-NK manuctured on-site. The NK cells are derived from the peripheral blood of universal donors with desirable HLA/KIR types and CMV status, modified by CRISPR/Cas9 targeting the CD38 locus, using AAV6 vector to insert a CD33-targeted CAR gene into the CD38 locus, and expanded in number.

Sponsors & Collaborators

  • Nationwide Children's Hospital

    lead OTHER

Principal Investigators

  • Margaret Lamb, MD · Nationwide Children's Hospital

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
1 Year
Max Age
39 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-04-01
Primary Completion
2032-07-01
Completion
2038-07-01
FDA Drug
Yes

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07026942 on ClinicalTrials.gov