Six genes (SLCO2A1, MGAT4B, SLC25A33, MCCC1, OIP5, and CTHRC1) have been shown to affect the tumorigenesis of other cancer types but not PC (Blomme et al., 2013; Chen et al., 2013; Guda et al., 2014; Ke et al., 2014; Lyons et al., 2017; Ribeiro et al., 2014; Tarnowski et al., 2016) (Table 1). Here, CTHRC1 is linked to cancer.