CD70 Targeted CAR-T Cells in CD70 Positive Relapsed/Refractory Lymphoma

"Dose escalation:~Dose1 (1×10\^6 cells/kg) ,Dose 2(3×10\^6 cells/kg) ,Dose 3 (1×10\^7 cells/kg)~Doseexpansion: RP2D~Drug: Fludarabine~Intravenous fludarabine 25-30 mg/m\^2/day on days 5, -4, and -3.~Drug: Cyclophosphamide~Intravenous cyclophosphamide 300-500 mg/m\^2/day on days -5, -4, and -3."