One Trial to Evaluate the Safety, Tolerability and Efficacy of JCXH-213 in Patients With r/r B-NHL

Inclusion Criteria: * Cytologically or histopathologically confirmed CD19-positive B-cell Hodgkin lymphoma according to WHO 2022 criteria, including but not limited to pathologically confirmed (1) diffuse large B-cell lymphoma, not otherwise specified (DLBCL, NOS); (2) follicular lymphoma (FL); (3)histologically transformed into diffuse large B-cell lymphoma; (4) primary mediastinal large B-cell lymphoma (PMBCL); (5) High-grade B-cell lymphoma (HGBCL) etc. * ECOG performance status 0 to 1. * Existing measurable lesions (Lugano 2014 criteria, as detailed in Appendix 2), meeting one of the following conditions: 1) nodal lesions with a long axis length exceeding 15 mm (short axis length is measurable); 2) extra-nodal lesions with both long axis and short axis lengths exceeding 10 mm. Exclusion Criteria: * Patients with other malignant tumors within 5 years before screening, except for adequately treated cervical carcinoma in situ, basal cell or squamous cell skin cancer, local radical prostatectomy, radical ductal carcinoma in situ, and radical thyroidectomy. * B-cell non-Hodgkin lymphoma with active primary or secondary central nervous system involvement. * Life expectancy less than 3 months.