While in several studies decorin has been found to have a tumour suppressor role (Csordas et al, 2000; Iozzo et al, 1999; Santra et al, 2000), others correlate decorin with increased tumour invasiveness, metastases and angiogenesis (Benet et al, 2012; Cawthorn et al, 2012; Dil & Banerjee, 2011; Fiedler & Eble, 2009; Zafiropoulos et al, 2008). The gene discussed is DCN; the disease is neoplasm.