Additionally, one phase I/II multi-CAR-T cell therapy targeting Muc1/CLL1/CD33/CD38/CD56/CD123 from China is enrolling patients with refractory or relapsed AML; it plans to enroll 10 patients between 2 and 75 years old and aims to evaluate the feasibility, safety, and efficacy of the fourth generation CAR-T cells, estimated completion date is December 31, 2020. The gene discussed is CD33; the disease is acute myeloid leukemia.