DPP6 and cancer: Six genes were found to be implicated in cancer etiology/progression/clinical outcomes with high degree of certainty: MMP1, DDX4, TRPM3, DPP6, KCNA1, and MUC17 (Senapati et al., 2010; Saied et al., 2012; Lallet-Daher et al., 2013; Kawal et al., 2016; Park et al., 2016; Schudrowitz et al., 2017).