Previous studies have shown that the E-cadherin/β-catenin complex plays a critical role in the proliferation and differentiation of multiple malignancies, including colon carcinoma (Pálmer et al. 2001), breast cancer (Rosso et al. 2014), prostate cancer (Zheng et al. 2017), and thyroid cancer (Cho et al. 2014). The gene discussed is CDH1; the disease is breast carcinoma.