Non-Interventional Study of Puzol-cel for CD19-Positive Relapsed/Refractory B-Cell Acute Lymphoblastic Leukemia

Establishing real-world data of Chinese patients with CD19-positive relapsed/refractory B-cell acute lymphoblastic leukemia (r/r B-ALL) treated with Puzolcabtagene Autoleucel Injection to evaluate its effectiveness.

Inclusion Criteria: * Patients with r/r B-ALL who receive treatment with Pucicelant Injection at a research center commercially certified by Chongqing Precision Biotech in China, and whose bone marrow tumor cells are confirmed to express CD19 by flow cytometry * Patients with essentially normal function of vital organs * Patients who voluntarily participate in this study and sign the informed consent form. For patients under 18 years of age, informed consent must also be obtained from their legal guardians Exclusion Criteria: * Patients who test positive for hepatitis C virus (HCV), human immunodeficiency virus (HIV), and Treponema pallidum (TP).