BMPRIB expression was negatively correlated with tumor size (rs = −0.190, P < 0.001), cTNM stage (rs = −0.126, P = 0.016), lymph node metastasis (rs = −0.202, P < 0.001) and distant metastasis (rs = −0.148, P = 0.004) but positively associated with the expression of PR (rs = 0.210, P < 0.001) of breast cancer. Here, PGR is linked to breast cancer.