Precursor B Cell Acute Lymphoblastic Leukemia (B-ALL) Treated With Autologous T Cells Genetically Targeted to the B Cell Specific Antigen CD19
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|ClinicalTrials.gov Identifier: NCT01044069|
Recruitment Status : Active, not recruiting
First Posted : January 7, 2010
Last Update Posted : February 2, 2021
This study is an investigational approach that uses immune cells, called "T cells", to kill leukemia. These T cells are removed from blood, modified in a laboratory, and then put back in the body. T cells fight infections and can also kill cancer cells in some cases. However, right now T cells are unable to kill the cancer cells. For this reason we will put one gene into the T cells that allows them to recognize and kill the leukemia cells. This gene will be put in the T cells by a weakened virus. The gene will produce proteins in the T cells that help the T cells recognize the leukemia cells and possibly kill them. The doctors have found that T cells modified in this way can cure an ALL-like cancer in mice.
The main goals of this study is to determine the safety and appropriate dose of these modified T cells in patients with ALL. This will be done in a "clinical trial." The dose of modified T-cells will depend on if you have disease present in your bone marrow or not. The patient will also receive chemotherapy before the T cells. We will use normally chemotherapy that is used in patients with leukemia. The chemotherapy is given to reduce leukemia and to allow the T cells to live longer.
|Condition or disease||Intervention/treatment||Phase|
|Leukemia Acute Lymphoblastic Leukemia||Biological: gene-modified T cells targeted||Phase 1|
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||93 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||A Phase I Trial of Precursor B Cell Acute Lymphoblastic Leukemia (B-ALL) Treated With Autologous T Cells Genetically Targeted to the B Cell Specific Antigen CD19|
|Actual Study Start Date :||January 5, 2010|
|Estimated Primary Completion Date :||January 2022|
|Estimated Study Completion Date :||January 2022|
Experimental: Pts with B Cell Acute Lymphoblastic Leukemia
This is a phase I study. Patients with CD19+ ALL (CR, relapsed, MRD, or refractory) are eligible for enrollment. B-ALL patients in first CR will be enrolled but only treated if they develop MRD or a frank relapse, while patients with MRD or with documented relapsed/refractory disease are eligible for immediate treatment. The T cell doses originally proposed in this study were based on doses administered safely in prior autologous T cell adoptive therapy trials but the dose has been modified based on the toxicities observed in patients with morphologic evidence of disease. Patients will be treated with different doses of T cells depending on the amount of disease at the time of T cell infusion. Patients in Cohort 1 (<5% blasts in the BM) will continue to receive 10^6 19-28z+ T cells/kg as previously. Patients in Cohort 2 (≥5% blasts in the BM) will receive the reduced dose of 1x106 19-28z+ T cells/kg).
Biological: gene-modified T cells targeted
Pts will undergo leukapheresis. The leukapheresis product will be washed & frozen until the GTF is directed to start T cell production by the PI. CD3+ T cells will be isolated from the leukapheresis, & transduced with the 19-28z chimeric receptor & expanded. All relapsed (either MRD+ or morphologic) & refractory pts get re-induction chemo whenever feasible to optimally reduce the tumor burden prior to the T cell infusion. The re-induction chemo regimen will be selected by the treating dr. based on prior therapy, adverse reactions to chemo & highest likelihood to achieve an optimal response. Once pts recover from the toxicities of the re-induction chemo the disease status will be re-evaluated by repeating bone marrow aspirate or biopsy. Pts get conditioning chemo (min 2 weeks from end of re-induction chemo) followed 2-7 days later by the 19-28z+ T cells. Pts will be tx in 2 cohorts with diff doses of T cells according to the amount of disease immediately prior to the T cell infusion.
- To evaluate the safety of adoptive transfer of gene-modified autologous CD19-specific T cells in adult patients with B-ALL. [ Time Frame: 2 years ]
- To assess the anti-leukemic effect of adoptively transferred anti-CD19 T cells. [ Time Frame: 2 years ]
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01044069
|United States, New York|
|Memorial Sloan Kettering Cancer Center|
|New York, New York, United States, 10065|
|Principal Investigator:||Jae Park, MD||Memorial Sloan Kettering Cancer Center|