ID2 and acute myeloid leukemia: In all the AML patients, the expression of ID1, ID2 and ID3 independently affected the OS time (P = 0.016, 0.039 and 0.028, respectively) (Table 1), whereas the expression of ID1 and ID3 independently affected the DFS time (P = 0.043 and 0.022, respectively) (Supplementary Table S2).