The Study of Autologous T Cells Expressing CD19 Chimeric Antigen Receptors Treatment of Minimal Residual Disease(MRD) of B Cell Malignancies and Then Autologous Hematopoietic Stem Cell Transplantation(Auto-HSCT)

Phase 1 Clinical Study of CD19-directed Chimeric Antigen Receptor-modified T (CART19) Cells treatment for Adult Patient with Minimal Residual Disease(MRD) of B Cell Malignancies and then Autologous Hematopoietic Stem Cell Transplantation(Auto-HSCT). Subjects will receive 0.5-4 x 10\^8 transduced CAR T cells as a split dose over three days as follows:Day 0, 10% fraction: 0.5-4x10\^7 CART19 cells, Day 1, 30% fraction: 1.5x10\^7-1.2x10\^8 CART19 cells, Day 2, 60% fraction: 3x10\^7-2.4x10\^8 CART19 cells. Auto-HSCT will be made about 6 mouths after CART19 cell is infused back to the patient.