Multicenter, Single-Arm Exploratory Phase I Clinical Study (Assessment of Safety and Efficacy) of Fully Human BAFF-R Chimeric Antigen Receptor T-Cell Injection in Relapsed/Refractory BAFF-R-Positive B-Cell Lymphoma

Inclusion Criteria

• •1.Relapsed and refractory (R/R) BAFF-R-positive B-cell lymphoma:The diagnosis of B-cell lymphoma must be confirmed in accordance with the NCCN Clinical Practice Guidelines in Oncology: B-Cell Lymphomas (Version 1.2020) (NCCN: National Comprehensive Cancer Network).The expression of BAFF-R on tumor cells must be detected by flow cytometry (for patients where current clinical sampling is not feasible, test results obtained within 90 days prior to signing the informed consent form are acceptable). Investigators will determine whether to accept test results from external hospitals and whether the patient is eligible for enrollment.In accordance with the 2014 Lugano Classification, B-cell lymphoma patients must have at least one measurable lesion with a longest diameter ≥ 1.5 cm, or bone marrow involvement confirmed by bone marrow flow cytometry.Patients who have received CD19-targeted therapy are also eligible for enrollment, including those who have undergone:
• •1. :Relapsed and refractory (R/R) mantle cell lymphoma (MCL):Histologically confirmed MCL;Relapsed or refractory after at least 2 lines of prior treatment (including anti-CD20 monoclonal antibody and Bruton's tyrosine kinase inhibitor \[BTKi\]).
• •2. :Relapsed and refractory (R/R) chronic lymphocytic leukemia (CLL):Histologically confirmed CLL;Patients who have received at least immunochemotherapy and are refractory to both BTK inhibitors and B-cell lymphoma 2 (BCL2) inhibitors.
• •3. :Relapsed and refractory (R/R) diffuse large B-cell lymphoma (DLBCL):Histologically confirmed DLBCL;Patients who have received anthracycline-based therapy and anti-CD20 monoclonal antibody therapy, and have undergone at least 2 lines of treatment in total; or patients who failed to achieve remission, progressed, or relapsed within 12 months after initial standard treatment.
• •4. :Relapsed and refractory (R/R) follicular lymphoma (FL):Histologically confirmed FL (Grade 1-3a);Patients who have received anti-CD20 monoclonal antibody-containing therapy and have undergone at least 2 lines of treatment in total; or patients who relapsed within 24 months after initial treatment.
• •5. :Relapsed and refractory (R/R) marginal zone lymphoma (MZL):Histologically confirmed MZL;Patients who have received anti-CD20 monoclonal antibody-containing therapy, have undergone at least 2 lines of treatment in total and relapsed thereafter; or patients who relapsed within 24 months after initial treatment.
• •6. :Relapsed and refractory (R/R) Waldenström macroglobulinemia (WM):Histologically confirmed WM;Patients who have received anti-CD20 monoclonal antibody-containing therapy and BTK inhibitor-containing therapy (among other medications), and have undergone at least 2 lines of treatment in total; or patients who relapsed within 24 months after initial treatment.
• •2.Aged ≥ 18 years and ≤ 75 years, with no restriction on gender. 3.Expected survival time ≥ 12 weeks. 4.Serum total bilirubin ≤ 37.2 μmol/L (for patients with Gilbert syndrome: serum total bilirubin ≤ 3.0 × upper limit of normal \[ULN\], direct bilirubin ≤ 1.5 × ULN); estimated glomerular filtration rate \[eGFR\] (calculated by CKD-EPI formula) ≥ 30 ml/min/1.73m²; alanine aminotransferase \[ALT\] and aspartate aminotransferase \[AST\] \< 2.5 × upper limit of normal \[ULN\].
• •5.Eastern Cooperative Oncology Group (ECOG) performance status of 0-1. 6.Left ventricular ejection fraction (LVEF) ≥ 50% as diagnosed by echocardiography; oxygen saturation \> 91%.
• •7.The participant and their spouse/partner must agree to use effective barrier or pharmaceutical contraceptive methods from the time the participant signs the informed consent form until one year after CAR-T cell infusion. For female participants of childbearing potential, serum or urine pregnancy test results must be negative during the screening period.
• •8.Voluntarily participate in this trial and sign the Informed Consent Form (ICF).
• •1. ： The patient has a full understanding of this study, voluntarily agrees to participate, and signs the Informed Consent Form (ICF).
• •2. ：Aged ≥ 18 years and ≤ 75 years, with no restriction on gender.