This effect was more evident among the 33 NPM1wt/FLT3-ITD patients: in this subgroup, patients who received GO had an overall good outcome, similar to those double mutated (median OS not reached in both groups, p=n.s.)...our data seem to indicate that GO added to an intensive fludarabine/high dose ARA-C based induction, provides a significant improvement of anti-leukemic activity in patients carrying FLT3-ITD mutation, especially if NPM1wt.