EWSR1 and neoplasm: At the contrary, a specific translocation t (11;22) (p13;q12) unique to this neoplasm has been described; it results from the fusion of Ewing’s sarcoma (EWSR1) and Wilms’ tumor (WT1) genes and it is believed that the derivative chromosome 22 harbors the functional fusion gene, encoding the chimeric protein which has transcriptional activity, stimulating the uncontrollable proliferation and growth of tumor cells [13].