This chromosomal abnormality fuses part of the AML1/RUNX1 gene to the ETO/MTG8 gene and generates the AML1-ETO protein.     ///    AEtr is almost identical to the AML1-ETO exon 9a isoform expressed in leukemia patients.     ///    We previously identified a C-terminal truncated AML1-ETO protein (AEtr) in a mouse leukemia model. 