KIR3DL1 and myeloid neoplasm: Interestingly, in patients treated for a myeloid malignancy, the cumulative incidence of relapse was significantly higher in those who received a graft with a non-expressed vs. expressed KIR3DL1 allotype (2 y relapse rate: 47 ± 14% vs. 24 ± 4%, p = 0.023) (Figure 4b,c).