ERBB2 and breast cancer: Additionally, previous studies have suggested that patients who achieve pCR after NAC may have a better prognosis, particularly in the case of TNBC and HER2-enriched BC.[11,12] In the current study, none of the luminal A patients achieved pCR, and the OS and DFS rates of TNBC, HER2 enriched, and luminal B patients who achieved pCR were higher than those of non-pCR patients.