Title
Humanized CAR-T Therapy for Treatment of B Cell Malignancy
Humanized CAR-T Therapy for Treatment of Recurrent or Refractory B Cell Malignancy by Targeting CD19
Phase
Phase 1/Phase 2Lead Sponsor
Xuzhou Medical UniversityStudy Type
InterventionalStatus
Unknown statusIndication/Condition
Leukemia, Lymphocytic, Chronic, B-CellIntervention/Treatment
car-t targeted cd19/cd20/cd22/cd30 ...Study Participants
50The present study evaluates the safety and efficacy of humanized Chimeric antigen receptor T cells (CAR-T) in treating recurrent or refractory B cell malignancy targeting CD19 with a humanized scFv. All participants will receive autologous chimeric antigen receptor engineered T cells.
CD19 has been extensively evaluated as a therapeutic target for recurrent or refractory B cell malignancy by chimeric antigen receptor T cell therapy, the single chain antibody sequence (scFv) against CD19 derived from a mouse hybridoma was widely employed. However, the immunogenicity of the mouse scFv sequence might be one of the reasons that CAR-T cells cannot persist in vivo for long. In present study investigators replace the mouse-derived scFv with a a humanized one and evaluate its safety and efficacy.
Patients will be infused with autologous CAR-T infusion in a dose escalating manner.
In interventional studies, patients enrolled will receive autologous 2nd generation CAR-T cells, which contain a humanized single chain antibody sequence against CD19.
Inclusion Criteria: Age≥3 at the time of consent Survival time>12 weeks B cell hematological malignancies by pathological examination Chemotherapy failure or recurrent B cell malignancy Creatinine< 2.5mg/dl Glutamic-pyruvic transaminase, glutamic oxalacetic transaminase< 3 fold of normal level Karnofsky Performance Status>50% at the time of screening Bilirubin<2.0mg/dl Adequate pulmonary, renal, hepatic, and cardiac function Fail in autologous or allogenic haemopoietic stem cell transplantation Free of leukocytes removal contraindications Exclusion Criteria: Pregnant or nursing women Active hepatitis B, active hepatitis C, or any human immunodeficiency virus (HIV) infection at the time of screening Previous treatment with any gene therapy product Abnormal vital signs Highly allergic constitution or history of severe allergies, especially allergy to interleukin-2 General infection or local severe infection, or other infection that is not controlled Dysfunction in lung, heart, kidney and brain. Severe autoimmune diseases other symptoms that are not applicable for CAR-T