Chemotherapy Omission in ER+/HER2- Breast Cancer With 1-3 Positive Lymph Nodes Receiving Extended Adjuvant Abemaciclib
This is a prospective, randomized, open-label, multicenter phase III study to explore chemotherapy omission in ER+/HER2-endocrine-sensitive breast cancer with 1-3 positive lymph nodes receiving extended (3 year) adjuvant abemaciclib