MMP‐2 and MMP‐9 are assumed to be particularly important for cell transmigration, and the association of cell surface between MMP‐2, MMP‐9 and integrins has been implicated in the progression and growth of chronic myeloid leukaemia and acute myeloid leukaemia cells.26 Here, MMP9 is linked to chronic myelogenous leukemia, BCR-ABL1 positive.