About this trial
Subjects on this study have a type of lymph gland cancer called Non-Hodgkin Lymphoma, acute lymphocytic leukemia, or chronic Lymphocytic Leukemia (these diseases will be referred to as "lymphoma" or "leukemia"). The lymphoma or leukemia has come back or has not gone away after treatment.
The body has different ways of fighting infection and disease. No one way seems perfect for fighting cancers. This research study combines two different ways of fighting disease, antibodies and T cells, hoping that they will work together. Both antibodies and T cells have been used to treat patients with cancer. They have shown promise, but have not been strong enough to cure most patients.
T cells can kill tumor cells but normally there are not enough of them to kill all the tumor cells. Some researchers have taken T cells from a person's blood, grown more of them in the laboratory and then given them back to the person.
The antibody used in this study is called anti-CD19. It first came from mice that have developed immunity to human lymphoma. This antibody sticks to lymphoma cells because of a substance on the outside of these cells called CD19. CD19 antibodies have been used to treat people with lymphoma and leukemia. For this study, anti-CD19 has been changed so that instead of floating free in the blood it is now joined to the T cells. When an antibody is joined to a T cell in this way it is called a chimeric receptor.
In the laboratory, the investigators found that T cells work better if they also add proteins that stimulate T cells, such as one called CD28. Adding the CD28 makes the cells last longer in the body but not long enough for them to be able to kill the lymphoma cells. The investigators believe that if they add an extra stimulating protein, called CD137, the cells will have a better chance of killing the lymphoma cells.
The investigators are going to see if this is true by putting the CD19 chimeric receptor with CD28 alone into half of the cells and the CD19 chimeric receptor with CD28 and CD137 into the other half of the cells. These CD19 chimeric receptor T cells with CD28 and with or without CD137 are investigational products not approved by the FDA.
The purpose of this study is to find the biggest dose of chimeric T cells that is safe, to see how long the T cell with each sort of chimeric receptor lasts, to learn what the side effects are and to see whether this therapy might help people with lymphoma or leukemia.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Diagnosis of recurrent B-cell lymphoma or leukemia (ALL or CLL), or newly diagnosed patients unable to receive or complete standard therapy OR diagnosis of relapsed/refractory aggressive B-cell lymphoma with a treatment plan that will include high dose therapy and autologous stem cell transplantation.
CD19-positive tumor (result can be pending at this time).
Age <= 75 years. The first 3 patients treated on the study should be adults (>= 18 years).
Hgb greater than or equal to 7.0 (can be a transfused value)
Disqualifiers
Active infection requiring antibiotics.
No history of other cancer (except non-melanoma skin cancer or in situ breast cancer or cervix cancer) unless the tumor was successfully treated with curative intent at least 2 years before trial entry.
Currently receiving any investigational agents or received any tumor vaccines within the previous 6 weeks. (Note treatment with PD1/PDL1 inhibitors is allowed.)
History of hypersensitivity reactions to murine protein-containing products.
Trial design
Single group
Treatments tested in this trial
Dose Escalation Phase:CD19.CAR/28 and CD19.CAR/28137 T cells
GeneticThree dose levels will be evaluated. Group 1: CD19.CAR/28137ζ at 1×10\^6 cells/m\^2 and CD19.CAR/28ζ at 1×10\^6 cells/m\^2 Group 2: CD19.CAR/28137ζ at 5×10\^6 cells/m\^2 and CD19.CAR/28ζ at 5×10\^6 cells/m\^2 Group 3: CD19.CAR/28137ζ at 2×10\^7 cells/m\^2 and CD19.CAR/28ζ at 2×10\^7 cells/m\^2
Expansion Phase: CD19.CAR/28 and CD19.CAR/28137 T cells
GeneticThe primary goal of the expanded cohort is to further study the safety profiles of CAR-T cells in each of the disease settings, both with or without lymphodepleting chemotherapy given before CAR-T cell infusion.
Treatment groups
Trial outcomes
Primary outcomes
Number of patients with dose limiting toxicity (DLT)
Toxicity will be evaluated according to the NCI Common Terminology Criteria for Adverse Events (CTCAE) scale, version 4. DLT will be defined as any of the following that is NOT (1) pre-existing, or (2) due to infection (to which patients with CLL and NHL are predisposed), or (3) due to underlying malignancy, and that may, after consultation with the FDA when indicated, be considered possibly, probably, or definitely related to the study cellular products: (1) Non-hematologic DLT is any grade 3 or grade 4 non-hematologic toxicity, including allergic reactions to T cell infusions; (2) Hematologic DLT is defined as any grade 4 hematologic toxicity. Patients with evidence of bone marrow disease (metastases or diffuse infiltration) are not evaluable for hematologic dose limiting toxicity.
Secondary outcomes
Survival of CD19.CAR-ATLs
Survival will be measured by a real time Q-PCR assay to detect CD19.CAR-ATLs in peripheral blood from subjects. Plots will be generated to depict patterns of survival. Also, longitudinal modeling techniques will be used.
Frequency of the two distinct T cell products post infusion
To compare the changes in frequency of two different T-cell products in the same patient, two different Q-PCR assays will be used, which distinguish each CAR by the presence or absence of the CD137 co-stimulatory endodomain gene.
Number of patients with tumor response
Tumor responses will be assessed by the International Working Group Revised Response Criteria for Malignant Lymphoma or the National Cancer Institute CLL Working Group Recommendations, as applicable.
Percentage of circulating modified T cells after additional doses
Changes in the percentage of circulating modified T cells after additional doses will be measured by each respective real time Q-PCR assay to detect CD19.CAR-ATLs in peripheral blood from subjects. Plots will be generated to depict patterns of survival. Also, longitudinal modeling techniques will be used.
Sponsors and contacts
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Baylor College of Medicine
Lead sponsor
Center for Cell and Gene Therapy, Baylor College of Medicine
Collaborator
The Methodist Hospital Research Institute
Collaborator