在早期患有雌激素受体低表达性乳腺癌的预后和内分泌治疗疗效
Sihua Liu1, Beidi Du1, Mengmeng Zhang1
1Breast Disease Center, The First Affiliated Hospital, Sun Yat-Sen University, No.58, Zhong Shan Er Lu, Guangzhou, 510080, China.
Breast cancer research and treatment
|January 6, 2026
概括
低雌激素受体 (ER-low) 乳腺癌的预后因HER2状态而异. 内分泌疗法有利于低ER,HER2-阴性患者通过减少复发,但不是低ER,HER2-阳性患者.
科学领域:
- 在瘤学瘤学.
- 乳腺癌研究研究 乳腺癌研究
- 内分泌学 在内分泌学.
背景情况:
- 低雌激素受体 (ER) 乳腺癌代表了一个独特的亚型,对其临床行为和治疗反应的理解正在不断发展.
- 准确的预后和确定低ER乳腺癌的有效疗法对于个性化治疗策略至关重要.
研究的目的:
- 研究雌激素受体 (ER) 低表达在早期乳腺癌的预后影响.
- 评估内分泌疗法 (ET) 在患有低ER乳腺癌的患者的疗效,按人体表皮生长因子受体2 (HER2) 状态分层.
主要方法:
- 对2951名在2010-2020年期间被诊断为乳腺癌早期阶段的患者进行了回顾性队列研究.
- 在ER低,ER高和ER负组中比较临床病理特征,生存结果 (无乳腺癌生存率,局部区域复发,远程转移) 和ET影响.
- 基于HER2状态 (阳性或阴性) 的分析分层.
主要成果:
- 与高ER患者相比,低ER患者,特别是HER2阴性亚组患者的乳腺癌无存活率明显降低,局部区域复发风险更高.
- 在HER2阴性亚组中,低ER和ER阴性患者之间没有观察到显著的预后差异.
- 内分泌疗法显著改善了无乳腺癌存活率,并降低了HER2-负组低ER患者的复发/转移风险.
- 在HER2阳性小组中,低ER状态没有显著影响预后,ET也没有改善生存结果.
结论:
- HER2阴性/低ER乳腺癌与三阴性乳腺癌具有临床特征,受益于内分泌治疗以减少复发和转移.
- 对于HER2阳性乳腺癌患者来说,低ER表达似乎不是预后因素或内分泌治疗益处的明确指标.
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