IDH2 and acute myeloid leukemia: To better stratify the AML patients into different risk groups, a scoring system incorporating 10 prognostic markers, including age, WBC counts, cytogenetics at diagnosis, NPM1/FLT3-ITD and mutations of CEBPA, IDH2, TP53, DNMT3A, RUNX1 and WT1, into survival analysis was formulated based on the results of our Cox proportional hazards model.