This study is designed as stratified cluster randomized, parallel-control research. The HR+HER2- breast cancer patients after neoadjuvant chemotherapy (including anthracyclines and taxane, at least 6 cycles) assessed non-pCR are recruited, receiving multiple gene test before neoadjuvant treatment and after surgery. After enrollment, the patients were stratified according to multiple gene test based recurrence risk level (High risk or Low risk) and then randomized into two groups respectively in each cluster: receiving additional chemotherapy (Capecitabine) group or negative control group. The primary endpoint is 2-year disease free survival. The second endpoint is 5-year disease free survival (DFS), 2-year overall survival (OS), 5-year OS, safety of additional chemotherapy. The exploratory endpoint is the variety of multiple gene test based recurrence risk after neoadjuvant chemotherapy in non-pCR patients.
