WT1 and acute myeloid leukemia: Also, the expression of GATA2 is significantly higher in AML compared to normal bone marrow, and recently Maaike Luesink and his colleagues found that high GATA2 expression was a poor prognostic marker in acute myeloid leukemia [7, 8] as well as other transcription factors EVI [9, 10],WT1 [11, 12].