The Japanese Breast Cancer Society Clinical Practice Guideline for Systemic Treatment of Breast Cancer

This is a clinical practice guideline for systemic treatment of breast cancer. The guideline provides recommendations as they relate to preoperative endocrine therapy, preoperative chemotherapy, and, among others, aromatase inhibitor monotherapy. The guideline also provides recommendations as they relate to postoperative therapy options, recommendations for metastatic or recurrent breast cancer, and HER2-positive primary breast cancer.