GATA2 and myelodysplastic syndrome: GATA2 haploinsufficiency is described as protean disorder that may present with a variety of clinical phenotypes.30 Phenotypes include dendritic cell, monocyte, B and natural killer cell deficiency with mycobacterial infections (MonoMAC), myelodysplastic syndromes, acute myeloid leukaemia and Emberger syndrome.