ITGA4 and acute myeloid leukemia: On the other hand, compared to HD‐BMMSC, de novo AML‐BMMSC induced a significant increase in the expression of CD49d (642.0 [625.0‐659.0] vs 875.0 [649.0‐4646.0], P < 0.05) with no significant difference in cell number expressing CD49d (9.10% [3.60%‐14.40%] vs 22.70% [1.60%‐99.60%]).