Clinical Study of IM96 CAR-T Cell Therapy in Patients With Advanced Colorectal Cancer

IM96 CAR-T Cells, 12×10\^8 CAR-T cells, 20×10\^8 CAR-T cells, treatment follows a lymphodepletion. Drug: Fludarabine Recommendation: 30 mg/m\^2 (D-5\~D- 3), determined by tumor burden at baseline. Drug: Fludarabine Recommendation: 30 mg/m\^2 (D-5\~D-3), determined by tumor burden at baseline. Drug: Cyclophosphamide Recommendation: 300 mg/ m\^2 (D-5\~D-3), determined by tumor burden at baseline.