Approximately 85% of Ewing's sarcomas contain the EWS‐FLI1 fusion gene due to the t(11;22)(q24;q12) translocation, and 10% have t(21;22)(q24;q12) translocation causing EWS‐ERG fusion.1, 3, 4. This evidence concerns the gene EWSR1 and Ewing sarcoma.