SNAI1 and chondrosarcoma: The eighteenth article, “Human chondrosarcoma cells acquire an epithelial-like gene expression pattern via an epigenetic switch: evidence for mesenchymal-epithelial transition during sarcomagenesis,” by M. P. Fitzgerald et al., provides evidence for epigenetic activation of a set of epithelial markers in chondrosarcomas, and downregulation of snail, as compared to chondrocytes.