Targeting CD19 and CD22 CAR-T Cells Immunotherapy in Patients With Relapsed or Refractory B Cell Lymphoma

Phase 1

Recruiting

• Conditions: Lymphoma, B-Cell
• Interventions: Biological: CD19-CD22 CAR-T cells

• Registration Number: NCT04715217
• Lead Sponsor: Shanxi Province Cancer Hospital

Brief Summary

Evaluation the safety,tolerability, preliminary efficacy,and PK/PD of CD19-CD22 CAR-T cells for the treatment of B cell lymphoma.

Detailed Description

A non randomized study ,plans to enrollment 24 subjects of B cell lymphoma .The subjects will divide into low, medium and high dose groups，to evaluate the safety and tolerability of CD19-CD22 CAR - T cells，to evaluate the preliminary efficacy and observe PK/PD parameters of CD19-CD22 CAR -T cells immunotherapy in patients with relapsed or refractory B cell lymphoma .

Study Timeline

• Study Start: 2021-01-04
• Study First Submitted: 2021-01-07
• Study First Submitted QC: 2021-01-17
• Study First Posted: 2021-01-20
• Status Verified: 2023-12
• Last Update Submitted: 2023-12-26
• Last Update Posted: 2023-12-29
• Primary Completion: 2024-10-31
• Study Completion: 2025-10-31

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 24

Inclusion Criteria

1. 6-70 - year - old male or female subjects (including 6 years old and 70 years old, 6-18 subjects use only the recommended dose of treatment);
2. The Clinical diagnosis of recurrent/refractory B cell lymphoma, after at least 2 courses of treatment, has not been achieved partial response, still in the continuous phase and progress, including the MRD positive, or recurrent intramedullary patients；
3. Bone marrow samples inspection by using flow cytometry or organization pathology ，the cell membrane surface antigen CD19 and/or CD22 positive；
4. Patients with lymphoma need to have a measurable lesions, measurable target lesions: lymph node x1.0 > 1.5 cm, outside the junction lesions > x1.0 1.0 cm;
5. ECOG physical status score of 0 to 2 points;
6. Expected lifetime is more than 12 weeks;
7. The clinical laboratory test results of screening phase meet the following criteria: (7 days before the inspection without blood transfusion) Hb≥60 g/L (allowed to use recombinant human erythropoietin); PLT≥ 50 x 10 ^ 9 / L ; ALC≥0.3×10^9/L; ANC≥0.75×10^9/L (allowed to use granulocyte colony stimulating factor); AST≤3ULN,ALT≤3ULN,TBIL≤2ULN；Ccr≥30 mL/min/1.73 m2；
8. Cardiopulmonary function: left ventricular ejection fraction > 40%; Baseline blood oxygen saturation > 95%;
9. Has a history of allogeneic/allogeneic hematopoietic stem cell transplantation patients: transplantation in 3 months ago, no grade 2 or more active graft versus host disease (GVHD), more than a month without immune inhibitors.

Exclusion Criteria

1. The active hepatitis b, HBV - DNA detection lower limit of the subjects above research center; Hepatitis c virus (HCV) antibody positive and peripheral blood HCV - RNA positive subjects; Antibodies to HIV positive subjects; Early syphilis screening antibody positive;
2. The other clinical significance of active virus, bacterial infection, or failing to control systemic fungal infection;
3. Any instability of systemic disease, including but not limited to, unstable angina, cerebrovascular accident, or transient ischemic (within 6 months prior to screening), myocardial infarction (within 6 months prior to screening), New York heart association (NYHA) classification level III or higher congestive heart failure, drug control of serious arrhythmia, liver, kidney or metabolic diseases, as well as the standard treatment cannot control high blood pressure;
4. In past two years, because of autoimmune diseases such as crohn's disease, rheumatoid arthritis and systemic lupus erythematosus (sle), etc.) causing end-organ damage, or need systemic application of immunosuppressive drugs;
5. Had a history of the central nervous system diseases, such as epilepsy, serious brain damage, dementia, Parkinson's disease, psychosis,etc which influence the appraising of test,;
6. Diagnosed with other active malignancy in past five years(the basal or scaly skin cancer, superficial bladder cancer, breast cancer in situ, which has been cured and does not require follow-up treatment are not included );
7. Known allergic to cyclophosphamide, fluorine dara marina or CAR - T cell s including accessories, DMSO ;
8. Patients with pregnancy or lactation, patients do not want to take effective contraceptive measures within 6months after infusion CAR-T cells;
9. The other situations that researchers determined doesn't fit to participate in this study.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SEQUENTIAL

Arm && Interventions

Group	Intervention	Description
High Dose Group	CD19-CD22 CAR-T cells	CD19-CD22 CAR-T cells injection, infused only once,3-6 subjects of high dose group will be intravenously infuse with 5.0×10\^6 CAR+Tcells/kg.
Amplification Dose Group	CD19-CD22 CAR-T cells	CD19-CD22 CAR-T cells injection, infused only once.After determined maximum tolerated dose,15 subjects of amplification dose group will be intravenously infuse with 0.5-5.0×10\^6 CAR+Tcells/kg.
Low Dose Group	CD19-CD22 CAR-T cells	CD19-CD22 CAR-T cells injection, infused only once,3-6 subjects of low dose group will be intravenously infuse with 0.5×10\^6 CAR+T cells/kg.
Middle Dose Group	CD19-CD22 CAR-T cells	CD19-CD22 CAR-T cells injection, infused only once,3-6 subjects of middle dose group will be intravenously infuse with 2.0×10\^6 CAR+Tcells/kg.

Primary Outcome Measures

Name	Time	Method
DLT	Form infusion CAR-T cells to 28 days after infusion	Observe wether dose limiting toxicity will happened in dose escalation phase
ORR	Form infusion CAR-T cells to 2 years after infusion	The overall response rate after CD19-CD22 CAR-T Cells immunotherapy

Secondary Outcome Measures

Name	Time	Method
Incidence of various types of adverse recation	Form infusion CAR-T cells to 2 years after infusion	According to CTCAE 5.0, record the level , type of adverse events, evaluat the correlation of CD19-CD22 CAR-T cells
DOR	Form infusion CAR-T cells to 2 years after infusion	Duration of Response
Concentration of IFN-γ level	Before removal of lymphocytes, before CAR - T cells infusion, Day1, Day3, Day5, Day7, Day10, Day14, Day21, Day28, Month2, Month3, Month6, Month9, Month12, Month15, Month18, Month21, Month24	The levels of cytokines（IFN-γ ）in peripheral blood
Cmax	Before removal of lymphocytes, before CAR - T cells infusion, Day1, Day3, Day5, Day7, Day10, Day14, Day21, Day28, Month2, Month3, Month6, Month9, Month12, Month15, Month18, Month21, Month24	By measuring the CAR - T cells copy number and the positive rate, peak plasma concentration is determined
PFS	Form infusion CAR-T cells to 2 years after infusion	Progression-free surial
OS	Form infusion CAR-T cells to subjects died，assessed up to 60 months	Overall survival
Tmax	Before removal of lymphocytes, before CAR - T cells infusion, Day1, Day3, Day5, Day7, Day10, Day14, Day21, Day28, Month2, Month3, Month6, Month9, Month12, Month15, Month18, Month21, Month24	The maximum concentration of time
AUC（0-720d）	Before removal of lymphocytes, before CAR - T cells infusion, Day1, Day3, Day5, Day7, Day10, Day14, Day21, Day28, Month2, Month3, Month6, Month9, Month12, Month15, Month18, Month21, Month24	Area under the plasma concentration versus time curve
Concentration of IL2 level	Before removal of lymphocytes, before CAR - T cells infusion, Day1, Day3, Day5, Day7, Day10, Day14, Day21, Day28, Month2, Month3, Month6, Month9, Month12, Month15, Month18, Month21, Month24	The levels of cytokines（IL2 ）in peripheral blood
Concentration of TNF-α level	Before removal of lymphocytes, before CAR - T cells infusion, Day1, Day3, Day5, Day7, Day10, Day14, Day21, Day28, Month2, Month3, Month6, Month9, Month12, Month15, Month18, Month21, Month24	The levels of cytokines（TNF-α）in peripheral blood
Concentration of IL6 level	Before removal of lymphocytes, before CAR - T cells infusion, Day1, Day3, Day5, Day7, Day10, Day14, Day21, Day28, Month2, Month3, Month6, Month9, Month12, Month15, Month18, Month21, Month24	The levels of cytokines（IL6 ）in peripheral blood
Concentration of IL10 level	Before removal of lymphocytes, before CAR - T cells infusion, Day1, Day3, Day5, Day7, Day10, Day14, Day21, Day28, Month2, Month3, Month6, Month9, Month12, Month15, Month18, Month21, Month24	The levels of cytokines（ IL10 ）in peripheral blood

Trial Locations

Locations (1)

Hematology Department of ShanXi Cancer Hospital; 🇨🇳 Taiyuan, Shanxi, China