PDPN and neoplasm: Podoplanin expression contributes to a pro-migratory phenotype in MSCs found in the perivascular space, lymphoid tissues (Astarita et al., 2015) and tumours (Suchanski et al., 2017; Martin-Villar et al., 2010; Neri et al., 2015; Wicki et al., 2006; Petrie et al., 2012).