In fact, pCR has different power in predicting event-free survival (EFS) by BC subtypes, with HR ranging from 0.24(95%CI, 0.18~0.33) in TNBC to 0·63 (95%CI, 0.38-1.04) in HER2-/HR+ grade 1/2 BC 4. Here, ERBB2 is linked to breast cancer.