Particularly, the expression of these two miRNAs is deregulated in some mammalian hematopoietic cancers: miR-155 is markedly overexpressed in some lymphomas and in FLT3-ITD-mutated AMLs, where there is evidence that this miR acts as an oncomiR; miR-146a is clearly down-modulated in some AMLs and in del(5q) MDSs. Here, FLT3 is linked to hematopoietic and lymphoid cell neoplasm.