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Kaplan–Meier survival curves for progression-free survival (PFS) and overall survival (OS) according to PAM50 breast cancer intrinsic subtype in the primary tumor (A,B), lymph node metastasis (C,D), and distant metastasis (E,F). p-values were calculated using the log-rank test. Abbreviations: HER2: human epidermal growth factor receptor 2; Lum A/B: luminal A/B.
