Prognostic Significance of Different Ki-67 Cutoff Values Defined Luminal B HER2-Negative Breast Cancer
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Luminal B (HER2-) breast cancer is defined as ER- or PR-positive and HER2-negative meeting with PR ≤ 20%, or ER- or PR-positive and HER2-negative with high Ki-67 index, which has worse prognoses. The locally specified Ki-67 cutoff value has remained elusive i... ...
