Despite the unsatisfactory amounts of specimens, in AML‐M3 patients, the proportion of progenitor cells in BMNCs (immunophenotyping) was negatively correlated with E2F1 expression (r=−0.8008, p = 0.0095, n = 9; Figure 6M), and the haemoglobin (HB) level was also negatively correlated with E2F1 expression (r = −0.7435, p = 0.0217, n = 9; Figure 6N). This evidence concerns the gene E2F1 and acute myeloid leukemia.