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(a) Disease‐free and (b) overall survival of 119 patients with breast carcinoma according to the status of chicken ovalbumin upstream promoter transcription factor (COUP‐TF) II immunoreactivity of carcinoma cells (Kaplan–Meier method). Cases were classified into two groups according to COUP‐TFII labeling index (LI): ++, >50% LI; +, 10–49% LI; and –, 0–9% LI. COUP‐TFII status was significantly associated with an increased risk of adverse clinical outcome.
