Evaluation of the Safety and Efficacy of Sup19 CAR-T Cells in Patients With Previously Failed CD19-Targeted Therapy or CD19-Weakly Expressed Hematologic Tumors

Inclusion Criteria: * Patients aged ≥18 and \<70 years, of any gender; * diagnosed with B-ALL/LBL according to the criteria of the National Comprehensive Cancer Network (NCCN) Clinical Practice Guidelines for Acute Lymphoblastic Leukemia (2020.v1) and B-cell Lymphoma Clinical Practice Guidelines (2020.v1); * meeting either of the following two criteria: (1) Previous targeted CD19 therapy, including bispecific antibodies, ADC drugs, and CAR-T, with continued CD19 expression; (2) Patients with hematological malignancies who have not received CD19-targeted therapy in the past, with weakly positive CD19 expression; * At the time of screening, the number of blasts in the bone marrow is 25% (bone marrow morphology) and/or extramedullary lesions; * Meeting the diagnosis of relapsed/refractory B-ALL/LBL, including any of the following situations: a. Primary refractory patients who have not achieved complete remission after two cycles of standardized chemotherapy or patients who have not achieved complete remission after multiple salvage chemotherapy regimens; b. Patients who relapse within 12 months after achieving complete remission or relapse after 12 months of achieving complete remission and have not achieved complete remission after one or more courses of standard treatment induction; c. Patients who relapse after hematopoietic stem cell transplantation or after CAR-T therapy targeting the same target; * Other relapsed/refractory CD19 weakly expressing hematological malignancie…