GATA2 and acute myeloid leukemia: GATA2 haploinsufficiency, from inherited or spontaneous heterozygous mutations, produces a range of hematopoietic disorders in humans including monocytopenia, mycobacterium avium complex (MonoMAC) syndrome; dendritic cell, monocyte, B and NK lymphoid (DCML) deficiency; congenital neutropenia; and familial MDS/AML (Bigley and Collin, 2011; Dickinson et al., 2011; Hahn et al., 2011; Hsu et al., 2011).