tokens: The PAX3 / FKHR fusion gene , formed by a t ( 2 ; 13 ) ( q35 ; q14 ) in alveolar rhabdomyosarcoma , encodes a hybrid protein that contains both PAX3 DNA binding domains , the paired box and homeodomain , linked to the bisected DNA binding domain of FKHR , a member of the forkhead family of transcription factors .