The differences in occurrence, reciprocity, and amplification between the PAX3-FKHR and PAX7-FKHR fusions indicate important differences in the mechanism of the two associated chromosomal translocation events..     ///    "Furthermore, we detected PAX7-FKHR genomic amplification in 10 of 11 cases, in contrast with the < 5% frequency of PAX3-FKHR amplification. "