帕尔博西克利布用于激素受体阳性,HER2阳性晚期乳腺癌
Otto Metzger1, Sumithra Mandrekar2, Shom Goel3
1Dana-Farber Cancer Institute, Harvard Medical School, Boston.
The New England journal of medicine
|January 28, 2026
概括
将palbociclib添加到维持治疗中显著改善了HER2阳性转移性乳腺癌患者的无进展生存率. 虽然有效,但这种组合治疗增加了副作用,主要是中性衰竭.
科学领域:
- 在瘤学瘤学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 激素受体阳性,HER2阳性转移性乳腺癌的标准一线治疗包括双重抗HER2疗法,化疗和维护HER2向和内分泌疗法.
- 帕尔博西克利布是一种CDK4/6抑制剂,根据临床前和临床数据显示,它有可能克服对内分泌和HER2导向疗法的耐药性.
研究的目的:
- 评估在激素受体阳性,HER2阳性转移性乳腺癌患者中,将palbociclib添加到维持HER2向和内分泌疗法的疗效和安全性.
- 作为主要终点,评估对无进展生存 (PFS) 的影响.
主要方法:
- 第三阶段,开放标签,随机试验 (PATINA) 涉及518名荷尔蒙受体阳性,HER2阳性转移性乳腺癌患者.
- 在初始化疗后,患者在1:1的比例下接受了维持HER2向和内分泌疗法,包括或不含palbociclib.
- 主要终点:研究人员评估的无进展生存率;次要终点:客观反应,临床益处,安全性和整体生存率.
主要成果:
- 与标准治疗相比,Palbociclib组的无进展生存时间显着更长 (中位数为44.3个月与29.1个月;HR 0.75;P=0.02).
- 在palbociclib组 (79.7%和10.0%) 与标准治疗组 (30.6%和3.6%) 相比,观察到3级和4级不良事件的更高率,主要是中性衰竭.
结论:
- 将palbociclib添加到维持抗HER2和内分泌疗法中,显著改善了这种患者群体的无进展生存率.
- 改善的PFS伴随着毒性增加,主要是中性质减退,突出了有效性和安全性之间的权衡.
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