FLT3 and acute myeloid leukemia: U.S. Food and Drug Administration (FDA) approved therapeutics, CD33 immunoconjugate gemtuzumab ozogamicin, fms like tyrosine kinase 3 (FLT3) inhibitor midostaurin, and isocitrate dehydrogenase 2 (IDH2) inhibitor enasidenib [12], all address specific features or subtypes of AML.