CAR T, chimeric antigen receptor-T; R/R, relapsed or refractory; B-ALL, B-cell acute lymphoblastic leukemia; B-LLy, B-cell lymphoblastic lymphoma; BCL, B-cell lymphoma; DLBCL, Diffuse Large B Cell lymphoma; MRD, minimal residual disease; CLL-1, C-type lectin-like molecule-1; AML, acute myeloid leukemia; MM, multiple myeloma; NHL, non-Hodgkin lymphoma; BCMA, B-cell maturation antigen. The gene discussed is CLEC12A; the disease is acute myeloid leukemia.