NCIt definition : A fusion gene that results from chromosomal translocation t(9;22)(q33;q12) that fuses
intron 9 of the EWSR1 gene to intron 4 of the PBX3 gene. This fusion is associated
with retroperitoneal leiomyoma and a small subset of myoepitheliomas, including intraosseous
and skin syncytial myoepitheliomas.;