Additionally, over-expression of KLK7 has been described as a potential route for metastasis in several cancer types (Dong, Kaushal, Brattsand, Nicklin, & Clements, 2003; Johnson, Ramani, Hennings, & Haun, 2007; Rezze, Fregnani, Duprat, & Landman, 2011; Talieri et al., 2009). This evidence concerns the gene KLK7 and cancer.