GATA2 mutations have been reported in acute myeloid transformation of chronic myeloid leukemia (CML)3, familial myelodysplastic syndrome-related acute myeloid leukemia (MDS/AML), pediatric MDS4,5, Emberger syndrome6, and monocytopenia and mycobacterial infection (MonoMAC) syndrome7,8. The gene discussed is GATA2; the disease is chronic myelogenous leukemia, BCR-ABL1 positive.