Similarly, EWSR1-ETV1, EWSR1-ETV4, EWSR1-FEV, FUS-ERG, and FUS-FEV are rarely formed in Ewing sarcoma, and these are generated by t(7;22)(p21.2;q12.2), t(17;22)(q21.31;q12.2), t(2;22)(q35;q12.2), t(16;21)(p11.2;q22.2) and t(2;16)(q35;p11.2), respectively [7, 8]. This evidence concerns the gene EWSR1 and Ewing sarcoma.