Eligible subjects will receive 1.0×10^8 CAR gdT, 2.0×10^8 CAR gdT, 4.0×10^8 CAR gdT, or additional doses may be added at the discretion of investigator and sponsor.
This is a single-arm, open-label, dose-escalation study to explore the safety, efficacy, and cytodynamic characteristics of the drug, and to initially observe the efficacy of the drug in subjects with relapsed/refractory B7-H3-positive acute myeloid cell line leukemia.