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Updated: Sep 19, 2025

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The In ovo CAM-assay as a Xenograft Model for Sarcoma
Published on: July 17, 2013
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作为新兴ESR1突变高级乳腺癌的第一线治疗药物
François-Clément Bidard1, Erica L Mayer2, Yeon Hee Park3
1Institut Curie, Paris and Saint-Cloud; INSERM Centre d'Investigation Clinique 1428, Paris; Versailles-Saint-Quentin University, Paris-Saclay University, Saint Cloud, France.
The New England journal of medicine
|June 2, 2025
概括
切换到camizestrant,选择性雌激素受体降解剂,显著改善了患有ESR1突变的晚期乳腺癌患者的无进展生存率. 这种向治疗为这种患者群体提供了比芳酶抑制剂更好的替代方案.
科学领域:
- 在瘤学瘤学.
- 内分泌学 在内分泌学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 雌激素受体 (ER) 阳性晚期乳腺癌可能会对芳酶抑制剂 (AIs) 以及循环素依赖性激酶4和6 (CDK4/6) 抑制剂产生获得性耐药性,通常是由于ESR1突变.
- 卡米泽斯特兰是一种新的选择性ER降解剂和抗剂,在ER阳性晚期乳腺癌中表现出抗瘤活性.
研究的目的:
- 在患有晚期乳腺癌和ESR1突变的患者中,与继续使用芳香酶抑制剂相比,转换为camizestrant的疗效进行评估.
- 评估对无进展生存 (PFS) 和患者报告结果的影响.
主要方法:
- 患有ER阳性,HER2阴性晚期乳腺癌的患者先前接受AI加CDK4/6抑制剂治疗至少6个月,通过ctDNA监测ESR1突变.
- 符合条件的ESR1突变且无放射性进展的患者被随机分配1:1转换为卡米兹斯特兰加CDK4/6抑制剂或继续使用AI加CDK4/6抑制剂.
- 主要终点是研究人员评估的无进展生存期.
主要成果:
- 卡米兹斯特兰特组 (157名患者) 的PFS中位数为16.0个月,相比之下,芳酶抑制剂组 (158名患者) 的PFS中位数为9.2个月 (进展或死亡的危险比率[HR],0.44;P<0.0001).
- 全球健康状况和生活质量恶化的中位时间在卡米泽斯特兰 (21.0个月) 与芳香酶抑制剂 (6.4个月) (HR,0.54) 中显著较长 (HR,0.54).
- 由于不良事件导致的停药率较低,并且在各组之间相似 (1.3%用于卡米泽斯特兰与1.9%用于芳酶抑制剂).
结论:
- 转换为camisestrant与CDK4/6抑制剂结合使用,可显著改善ER阳性,HER2阴性,具有ESR1突变的晚期乳腺癌患者的无进展生存率.
- 与继续使用芳香酶抑制剂治疗相比,卡米泽斯特兰特显示出有利的安全性概况,并改善了患者报告的生活质量.
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