CD19 Chimeric Antigen Receptors and CD19 Positive Feeder T Cells as a Leukemia Consolidation Treatment
This is a single center,randomized ,two-cohorts, open-label ,phase 1/2 study to evaluate the efficacy and safety of T cells expressing CD19 chimeric antigen receptors combined with CD19 positive feeder T cells treatment for CD19+ acute lymphoblastic leukemia patients in remission .
• Age 18 to 65
• Voluntary informed consent is given
• Expected survival ≥12 weeks
• Relieve CD19+ acute leukemia
• Organ function: (1)Left ventricular ejection fractions≥ 0.6 by echocardiography (2)ALT ≤3 times of ULN, or bilirubin \<2.0 mg/dl (3)Creatinine \< 2 mg/dl and less than 2.5 × normal for age (4)Prothrombin time and activated partial thromboplastin time \< 2 times of ULN (5)Arterial oxygen saturation\> 92%
• Karnofsky score ≥ 60 ;
• No history of combined chemotherapy in the recent 1 month and no immunotherapy in the recent 3 months;