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B-AllGeneticsFirst-in-humanCancerBiologicalDrugPhase 1

What this study is

Background:

B-cell acute lymphoblastic leukemia (B-ALL) is a type of blood cancer. Some people with B-ALL have a gene mutation that makes the disease hard to treat. The mutation causes cancer cells to make too much of a protein called thymic stromal lymphopoietin receptor (TSLPR). Chimeric antigen receptor (CAR) T cell therapy is a treatment that takes immune cells (T cells) from a person s body and modifies them to attack specific proteins. Researchers want to test whether TSLPR-CART cells can be given safely to adults with forms of B-cell leukemia, and to learn whether the treatment may help fight these cancers.

Objective:

To test TSLPR-CART in people with B-ALL.

Eligibility:

People aged 18 years and older with B-ALL that did not respond or returned after treatment. They must have TSLPR on their B-ALL.

Design:

Participants will be screened. They will have imaging scans and tests of their heart function. Samples will be taken from their bone marrow. They will have a lumbar puncture: A needle will be inserted into their back to collect a sample of the fluid around the spinal cord.

Participants will undergo leukapheresis: Blood will be taken from their body through a tube. The blood will pass through a machine that separates out the T cells. The remaining blood will be returned to the body through a different tube. The T cells will be used to create TSLPR-CART.

Participants will take chemotherapy over 5 days to prepare their body for the therapy; then they will receive the modified cells through a tube inserted into a vein. Staying in the hospital during part of the treatment is expected and participants will be monitored locally to evaluate for side effects. Approximately 1 month after receiving TSLPR-CART, participants will undergo evaluations to see how the TSLPR-CART impacted their leukemia. Participants will have follow-up visits for 2 years after TSLPR-CART either at NIH or at home....

What's being tested

  • TSLPR-CART

    Intervention · BIOLOGICAL

    TSLPR CAR transduced T cells on D0 after lymphodepleting preparative regimen

  • Cyclophosphamide

    Intervention · DRUG

    Cyclophosphamide will be diluted in an appropriate solution and infused over one hour. The dose will be based on the patient s body weight, at 500 mg/m\^2/dose after fludarabine infusion on days -3 and -2.

  • Fludarabine

    Intervention · DRUG

    Fludarabine is administered as an IV infusion in an appropriate solution over 30 minutes on days -5 through -2. To prevent undue toxicity the dose will be based on BSA (30 mg/m\^2/dose).

Study details

Official title
Phase I Dose Escalation Study of Anti-CRLF2-R/TSLPR Chimeric Antigen Receptor T Cells (TSLPR-CART) in Participants With Recurrent or Refractory CRLF2-R/TSLPR-Overexpressing B-cell Acute Lymphoblastic Leukemia (B-ALL)
Sponsor
National Cancer Institute (NCI)
Conditions
B-All · Acute Lymphoblastic Leukemia
Enrolling
57 people
Starts
2026-11-11
Est. completion
2032-06-30
Design
Open-label, single group, Phase 1
Record
View on ClinicalTrials.gov ↗