ID4 and acute myeloid leukemia: Among cytogenetically normal AML (CN‐AML), ID4 hypermethylation significantly correlated with lower CR rate [30% (8/27) versus 57% (27/47), P = 0.030], and shorter OS (P = 0.001, Fig. 4C) but not LFS time (P = 0.326, Fig. 4D).