Kandouz et al. have found that Teucrium polium plant extract (TPPE) enhances the formation of E-cadherin/β-catenin complex, inhibits β-catenin phosphorylation, and reduces invasion and motility of prostate cancer PC3 and DU145 cells (Kandouz et al., 2010). The gene discussed is CDH1; the disease is prostate cancer.