Detection of MID for rhabdomyosarcoma included myogenins, MyoD1 and PAX-FOXO1 fusion transcript, for synovial sarcoma—Bcl-2 protein and SYT-SSX fusion transcript, for clear cell sarcoma—S100 and melanoma cocktail and EWS-ATF1 fusion transcript by IHC and RT-qPCR [34]. This evidence concerns the gene ATF1 and clear cell sarcoma.