NCIt definition : A fusion gene ( 5.9 kb) that results from a chromosomal translocation t(3;21)(q26;q22)
which fuses the first 5 exons of the RUNX1 gene to most of the MECOM gene. This rearrangement
is associated with acute myelogenous leukemia, chronic myelogenous leukemia and myelodysplasic
syndrome.;