Since this finding, PDGF ligand dysregulation has been described in several human cancers, including glioblastoma and the rare skin tumour dermatofibrosarcoma protuberans (DFSP) where a chromosomal translocation event between PDGFB and collagen 1A1 results in a tumour promoting PDGF‐like protein (Heldin et al, 2018). This evidence concerns the gene PDGFB and dermatofibrosarcoma protuberans.