The role of NK cells is well known in disease control of myeloid malignancies, particularly in the setting of KIR‐HLA mismatch, as previously published in haploidentical allogenic stem cell transplantations by Velardi's group.23 The potential of KIR appears to be at least equally important in an autologous setting. Here, KIR3DL1 is linked to myeloid neoplasm.