In the cohort of AML patients, OS was significantly shorter in patients with low EZH2 expression (IHC score of 0–1) than in patients with high EZH2 expression (IHC score of 2–3; median OS of 0.68 years versus not reached, p = 0.0007, Fig. 5a). This evidence concerns the gene EZH2 and acute myeloid leukemia.