CDH1 and breast cancer: BC patients with CDH1 overexpression showed worse overall survival (OS) [HR = 1.81, P = 0.034], distant metastasis-free survival (DMFS) [HR = 1.75, P = 0.025] and relapse-free survival (RFS) [HR = 2.09, P = 0.0022] than patients with minimal expression of CDH1 (Figure 2D).