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Kaplan-Meier plots of DFS according to SET2,3 status (high, low) during the first 5 years in each treatment arm: (A) tamoxifen only and (B) CAF chemotherapy followed by tamoxifen. CAF, cyclophosphamide, doxorubicin, and fluorouracil; DFS, disease-free survival; SET2,3, sensitivity to endocrine therapy index.
