Thus, we investigated more in-depth the synergism between IACS-010759 (10nM) and 13 FLT3 inhibitors...in AML cell lines (FLT3-wt KG-1, U937, OCI-AML2, OCI-AML3; and FLT3-mutant MOLM-13 and MOLM-14). Among the 13 FLT3 inhibitors, only AC220 combined with IACS-010759 showed concentration windows with bliss index higher than 0.1 across different lines. Overall, the combinatorial treatment with IACS-010759 and AC220 impaired AML cell metabolism tremendously and to a much greater extent than any of the individual treatments alone.