JY231 Injection for the Treatment of Relapsed/Refractory Neurologic Immune Disorders

JY231 injection is administered intravenously and produces autologous CAR-T cells in the patient's body some time after infusion. A total of 3 dose groups were established to conduct a 3+3 dose-escalation study. The doses were divided into two categories: non-lymphodepletion and lymphodepletion pretreatment. The three dose groups for lymphodepletion included: 2×10\^8 TU, 4×10\^8 TU, and 8×10\^8 TU. The three dose groups for non-lymphodepletion included: 2×10\^9 TU, 4×10\^9 TU, and 8×10\^9 TU. The decision to perform lymphodepletion was based on the lymphocyte count and function during the patient screening period.