Wilms tumor 1 (WT1) is a zinc finger transcription factor of important prognostic significance in AML with four predominant splice isoforms, one of which represses transcription of the SRPK1 splice factor and alters VEGF splicing, promoting production of the anti-angiogenic VEGF-A165b isoform [45]. This evidence concerns the gene SLU7 and acute myeloid leukemia.