STYK1 and prostate cancer: This tendency is consistent with STYK1 overexpression in many other malignancies (Moriai et al., 2006; Jackson et al., 2009; Kondoh et al., 2009; Orang et al., 2014; Chen et al., 2016, 2017; Hu et al., 2018), except for gastric cancer (Fang et al., 2018) and some cases of castration-naïve prostate cancer (Chung et al., 2009).