Survival estimates of NPM1^– and NPM1^–/CEBPA^– patients with newly diagnosed “AML, NOS.” (A-D) NPM1^– patients. OS (A) and RFS (B) of NPM1^– patients by individual FAB category. OS (C) and RFS (D) of NPM1^– patients subclassified as either FAB M0 or M1-M6; patients with FAB M7 were excluded from this analysis. (E-F) NPM1^–/CEBPA^– patients. OS (E) and RFS (F) of NPM1^–/CEBPA^– patients subclassified as either FAB M0 or M1-M6; patients with FAB M7 were excluded from this analysis.