31 Greco Greco A A Fusetti Fusetti L L Villa Villa R R Sozzi Sozzi G G Minoletti Minoletti F F Mauri Mauri P P Pierotti Pierotti MA MA Transforming activity of the chimeric sequence formed by the fusion of collagen gene COL1A1 and the platelet derived growth factor b-chain gene in dermatofibrosarcoma protuberans Transforming activity of the chimeric sequence formed by the fusion of collagen gene COL1A1 and the platelet derived growth factor b-chain gene in dermatofibrosarcoma protuberans Oncogene. This evidence concerns the gene PDGFB and dermatofibrosarcoma protuberans.