FLT3 and acute myeloid leukemia: 59 yo female with FLT3 positive AML, status post induction therapy with cladribine/idarubicin/Ara-C/Sorafenib, underwent dUCBT with conditioning regimen: Flu/Cy/TBI +UCB Tregs at dose: 1×106 cells/kg on day −1 and donor cells on day 0; where ratio of Treg:Tcon was 1:24.