PIK3CA mutation in 152 ER positive breast cancers.

Abbreviation: HR, Hazard ratio; CI, confidence interval.*, Hazard ratio of premenopausal against postmenopausal; tumor size >5 against tumor size ≤5; lymph node positive against negative; tumor grade 3 against grade 1/2; PR-negative against PR-positive; HER2 positive against negative; Ki67≥14% against Ki67PIK3CA mutation in 152 ER positive breast cancers.缩写说明：HR为风险比（Hazard ratio），CI为置信区间（confidence interval）。*所指代的风险比分别为：绝经前相较于绝经后的风险比；肿瘤直径＞5cm相较于≤5cm的风险比；淋巴结阳性相较于阴性的风险比；肿瘤分级3级相较于1/2级的风险比；孕激素受体（PR）阴性相较于阳性的风险比；人表皮生长因子受体2（HER2）阳性相较于阴性的风险比；Ki67指数≥14%相较于携带PIK3CA突变样本的风险比，该分析针对152例雌激素受体（ER）阳性乳腺癌患者。