Selection of Optimal Adjuvant Chemotherapy and Targeted Therapy for Early Breast Cancer: ASCO Clinical Practice Guideline Focused Update

This clinical practice guideline is a focused update of the American Society of Clinical Oncology’s 2016 adaptation of Cancer Care Ontario’s guideline on the selection of optimal adjuvant chemotherapy regimens for early breast cancer and adjuvant targeted therapy for breast cancer. New recommendations are provided on the addition of adjuvant capecitabine after completion of standard preoperative anthracycline- and taxane-based combination chemotherapy, the addition of 1 year of adjuvant pertuzumab to combination chemotherapy and trastuzumab, and the use of neratinib as extended adjuvant therapy in patients with early-stage human epidermal growth factor receptor 2 (HER2)-amplified or HER2-overexpressed breast cancer.