Fibronectin is a glycoprotein known to enhance the growth of breast epithelial cells (McIntosh et al., 2010), increase breast cancer invasion (via STAT3 and MAPK pathways) (Balanis et al., 2013) and is upregulated in circulating tumor cells (Raimondi et al., 2011). The gene discussed is FN1; the disease is neoplasm.