IKZF1 and Myelodysplasia: Consistent with our recently published work,14 through clustering of gene expression profiles, all cases with IKZF1 N159S were clustered into myelodysplasia‐related/‐like (G5) subgroup, while the majority of other IKZF1 mutant loci displayed a similar gene expression profile to biallelic CEBPA or ‐like (biCEBPA/‐like, G4) subgroup, which incorporated not only biCEBPA, but also moCEBPA mutations with loss of heterozygosity and several CEBPA WT cases.14