Frequencies of tested KIR genotypes. (A-F) Blue columns are displaying frequencies of patients with AML, and red columns are displaying the control group with the respective KIR (or KIR ligand) genotype: KIR gene presence (A), B content score (B), centromeric A/B haplotypes (C), telomeric A/B haplotypes (D), KIR2DS1 and HLA-C1/C2 (E), and KIR3DL1 HLA-B subtype (F) combinations based on the criteria by Boudreau et al²²; adjusted P values are depicted above the pairs of columns.