This case suggested that the AML1/EVI1 gene may be involved in the progression of MDS together with del(7) (q22) and del(11) (q23)..     ///    q22) with AML1/EVI1 mRNA during progression of myelodysplastic syndrome to acute myeloid leukemia]..     ///    The AML1/EVI1 gene has been shown to cause blast crisis in chronic myelogenous leukemia.     ///    "In June 1994, she suffered exacerbation of pancytopenia with no chromosomal abnormalities, but AML1/EVI1 chimeric mRNA was detected by RT-PCR. "