Safety and Efficacy of Anti-EBV Autologous TCR-T Cell Injection in Relapsed/Refractory EBV-Positive Lymphoma

After signing the informed consent form and completing screening according to the inclusion/exclusion criteria, eligible subjects will be sequentially assigned to the following dose cohorts of TCR-T cells (single administration): 1×10⁶ TCR-T cells/kg, 2.5×10⁶ TCR-T cells/kg, 5×10⁶ TCR-T cells/kg, and 10×10⁶ TCR-T cells/kg. The first dose cohort (1×10⁶ TCR-T cells/kg) will use a rapid titration approach. If no significant safety issues occur within 28 days after infusion-defined as ≥Grade 3 non-hematologic toxicity, Grade 4 hematologic toxicity lasting more than 28 days (excluding disease- or chemotherapy-related causes), ≥Grade 2 neurotoxicity, or ≥Grade 3 cytokine release syndrome (CRS)-the next dose cohort will be initiated. If a dose-limiting toxicity (DLT) occurs, evaluation will be performed after 6 subjects have been treated. The subsequent three dose cohorts will follow a "3+3" dose-escalation design, with 3-6 subjects per cohort receiving a single infusion. For subjects in th