A recent meta‐analysis comprising 33 retrospective studies including 7353 breast cancer patients evaluated the association of E‐cad and OS, DFS and clinicopathologic factors in breast cancer.44 In this study, reduced E‐cad expression on membrane was significantly associated with OS (hazard ratio [HR] 1.57, 95% confidence interval [CI] 1.17‐2.10) and DFS (HR 1.37, 95% CI 1.07‐1.75). Here, CDH1 is linked to breast cancer.