Safety and Efficacy of CD19/CD22 Dual Targeted CAR-T Cell Therapy in R/R B-Cell Acute Lymphoblastic Leukemia
Study Details
Study Description
Brief Summary
This is an open, single-arm, prospective clinical study to evaluate the safety and efficacy of anti CD19 and CD22 CAR-T cell in the treatment of R/R B-ALL.
Condition or Disease | Intervention/Treatment | Phase |
---|---|---|
|
Early Phase 1 |
Detailed Description
CD19-directed CAR-T cell therapy has shown promising results in the treatment of relapsed/refractory B-cell acute lymphoblastic leukemia. CD19 and CD22 are proteins usually expressed on the surface of the B leukemia cells. The dual-CARs enables the T-cells to recognize and kill the tumor cell through recognition of CD19 and CD22.
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
---|---|
Experimental: SL19+22 CAR-T Eligible patients will be treated with SL19+22 CAR-T. |
Biological: Autologous CD19/CD22 Chimeric Antigen Receptor T-cells
A single infusion of CD19 and CD22 CAR-T cells.
Other Names:
Drug: Cyclophosphamide,Fludarabine
Given
|
Outcome Measures
Primary Outcome Measures
- Safety: Incidence of adverse events [up to 28 days]
To evaluate the possible adverse events that could occurred within the first month post SL19+22 infusion, including symptoms such as cytokine release syndrome and neurotoxicity.
- Efficacy: Remission Rate [Up to 3 months]
Remission Rate includes complete remission(CR)、CR with incomplete blood count recovery(CRi)、No remission(NR)
Secondary Outcome Measures
- Efficacy:duration of response (DOR) [24 months post CAR-T cells infusion]
Duration of response
- Efficacy: progression-free survival (PFS) [24 months post CAR-T cells infusion]
progression-free survival (PFS) time
- CAR-T proliferation [3 months post CAR-T cells infusion]
the copy number of CD19 and CD22 CAR- T cells in the genomes of peripheral blood mononuclear cell (PBMC) by quantitative Real-time PCR (qPCR).
- Cytokine release [First month post CAR-T cells infusion]
Cytokine( IL-6,IL-10,IFN-γ,TNF-α ) concentration (pg/mL) by flow cytometry
Eligibility Criteria
Criteria
Inclusion Criteria:
-
Sign the informed consent and be willing and able to comply with the visit, treatment regimen, laboratory examination and other requirements of the study as stipulated in the trial flow chart;
-
A definite diagnosis of B-cell Lymphocyte Leukemia, which meets any of the following criteria: Relapsed : a) relapsed within 12 months after first remission;Refractory: a) no remission after six weeks of induction therapy or no remission after two courses of induction therapy; b) relapsedafter CR for 2 or more times; c) The first relapse after chemotherapy and no remission after at least one salvage treatment; c) relapsed after hematopoietic stem cell transplantation;
-
ECOG Scores: 0~2
-
CD19 positive and CD22 positive were detected by immunohistochemistry or flow cytometry;
-
Estimated survival time>3 months;
-
Peripheral blood mononuclear immune cells must be collected at least 2 weeks after the last radiotherapy or systemic treatment.
-
For patients with only extramedullary recurrence of B-ALL, there must be at least one assessable lesion.
Exclusion Criteria:
-
Serious cardiac insufficiency;
-
Has a history of severe pulmonary function damaging;
-
Presence of other malignant tumors.
-
Presence of active fungal, bacterial, viral, or other infection requiring IV antibiotics for management.
-
Presence of other severe autoimmune diseases or immunodeficiency disease;
-
Patients with active hepatitis B or hepatitis C([HBVDNA+]or [HCVRNA+]);
-
Known positive serology for human immunodeficiency virus (HIV) or syphilis。
-
Has a history of serious allergies on biological products (including antibiotics);
-
Female patients who are under pregnancy and/or lactation, or planing on pregnancy for the next 12 months.
-
Any other situations that the researchers believe will affect the results of the study.
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
---|---|---|---|---|---|
1 | Hebei Yanda Ludaopei Hospital | Langfang | Hebei | China |
Sponsors and Collaborators
- Hebei Senlang Biotechnology Inc., Ltd.
- Hebei Yanda Ludaopei Hospital
Investigators
- Principal Investigator: Peihua Lu, PhD&MD, Beijing Lu Daopei Hospital
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- SL19+22 for B-ALL