在晚期乳腺癌中,低HER2状态与CDK4/6抑制剂的疗效之间的关系:现实研究
1Dr Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital, Ankara, Turkey. ondertugba111@gmail.com.
International journal of clinical oncology
|April 30, 2024
概括
在使用CDK4/6抑制剂治疗时,HER2-低乳腺癌 (BC) 与HER2-零BC的结果相似. 然而,与HER2-low患者相比,HER2-zero患者的无进展生存时间显著更长.
科学领域:
- 在瘤学瘤学.
- 医学研究 医学研究
- 临床试验 临床试验
背景情况:
- 低HER2乳腺癌 (BC) 是一个独特的亚型.
- 在HER2-低BC中CDK4/6抑制剂 (CDK4/6i) 的疗效尚不清楚.
研究的目的:
- 研究HER2表达水平对CDK4/6i在激素受体阳性转移性乳腺癌 (mBC) 的有效性的影响.
- 为了比较HER2-低和HER2-零的mBC患者之间的临床结果,这些患者接受了CDK4/6i加上内分泌治疗 (ET).
主要方法:
- 对258名HR+/HER2-mBC患者进行了回顾性分析,这些患者接受了第一线CDK4/6i+ET治疗.
- 结果根据HER2表达 (低与零) 进行了分层.
主要成果:
- 无进展生存 (mPFS) 的中位数为HER2-低的27.6个月,而HER2-零的44.3个月 (p=0.341).
- 在HER2-零患者和HER2-低患者 (HR:1.981,p=0.024) 中,利博西克利布治疗显示显著更长的mPFS.
- 目标反应和疾病控制率在各组之间没有显著差异.
结论:
- 虽然整体上没有统计学意义,但mPFS在HER2-zero中几乎是HER2-lowBC的两倍.
- 利博西克利布在HER2-零患者中表现出显著的PFS益处,而不是HER2-低患者.
- 需要进一步的前性研究来澄清HER2表达在这种情况下的临床影响.
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