Supplementary Figure S3 from Biomarker Data from the Phase III KATHERINE Study of Adjuvant T-DM1 versus Trastuzumab for Residual Invasive Disease after Neoadjuvant Therapy for HER2-Positive Breast Cancer

IDFS by HER2 IHC score at definitive surgery (derived from samples used for eligibility and exploratory purposes). IDFS, invasive disease-free survival; IHC, immunohistochemistry; T-DM1, trastuzumab emtansine.