Inherited mutations in GATA2 cause a range of overlapping clinical syndromes; the monoMAC (monocytopenia with mycobacterium avium complex) syndrome, DCML (dendritic cell and myeloid leukemia), Emberger syndrome (lymphedema with predisposition to AML), Familial myelodysplastic syndrome (MDS), aplastic anemia and congenital neutropenia (Dickinson et al., 2011; Hahn et al., 2011; Hsu et al., 2011; Ostergaard et al., 2011; Pasquet et al., 2013). The gene discussed is GATA2; the disease is monocytopenia with susceptibility to infections.