Validation of the new AJCC eighth edition of the TNM classification for breast cancer with a single-center breast cancer cohort

The new eighth edition TNM classification by the AJCC for breast cancer (BC) incorporates biologic factors and gene expression prognostic panels, in addition to traditional anatomic factors. In this study, we evaluated the prognostic value of this new staging system compared to the previous AJCC 7th edition staging system. We conducted a retrospective analysis of women with stage I, II, or III BC who underwent curative surgery with/without...