CLL-1 CAR-NK Cells for Relapsed/Refractory AML

Eligible patients enrolled in the study after screening will receive lymphocyte collection(from the patient or a donor ) and receive single dose CLL-1 CAR NK cells infusion after a successful cell production. There are a total of four cell dose level:5×10\^6 CAR-NK cells/kg,1×10\^7CAR-NK cells/kg,2×10\^7CAR-NK cells/kg,4×10\^7CAR-NK cells/kg