A rapid and efficient newly established method to detect COL1A1-PDGFB gene fusion in dermatofibrosarcoma protuberans..     ///    The newly developed method is valuable to rapidly identify COL1A1-PDGFB fusion transcripts in DFSP..     ///    "To detect the COL1A1-PDGFB fusion, almost previous reports performed reverse transcription polymerase chain reaction (RT-PCR) using multiplex forward primers from COL1A1. "    ///    "In all cases of DFSP, the COL1A1-PDGFB fusion was detected by both previous method and newly established one-step PCR. "