Molecular assays have been developed recently that detect the PAX3-FKHR or PAX7-FKHR fusion transcript resulting from the t(2.     ///    A reverse transcriptase-PCR assay was used to detect the presence of the PAX3-FKHR or PAX7-FKHR fusion transcript.     ///    "In addition, PAX3-FKHR fusion products were detected in bone marrows from 2 patients for whom there was no histologic evidence of disease. "