在乳腺癌复发期间,PTEN无活化突变与激素受体损失有关
Haiying Zhan1, Vijay Mariadas Antony2, Haiming Tang2
1Department of Pathology, Yale School of Medicine, New Haven, CT, 06520, USA. haiying.zhan@yale.edu.
Breast cancer research and treatment
|March 10, 2025
概括
激素受体状态可以改变乳腺癌复发. 在患有雌激素受体阳性瘤变为三阴性患者中,PTEN突变更为常见,这表明PI3K/AKT/PTEN通路参与.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 乳腺癌 (BC) 中的激素受体 (HR) 状态可能不稳定,在20-30%的患者中,在复发时会出现变化.
- 从HR-阳性 (HR+) 转化为HR-阴性 (HR-) 的瘤转化与较差的结果有关,需要不同的治疗策略.
研究的目的:
- 研究ER+/HER2-乳腺癌患者的临床和病理特征,这些患者患有三阴性乳腺癌 (TNBC) 复发.
- 在乳腺癌进展过程中识别与激素受体损失相关的分子变化.
主要方法:
- 对112名患有初级ER+/HER2乳腺癌和随后复发的患者进行了回顾性分析.
- 分类为不一致的TNBC (n=20) 和一致的ER+/HER2-复发性瘤队列.
- 收集关于瘤组织学,等级,阶段,受体状况,分子分析和治疗史的数据.
主要成果:
- HR+瘤作为TNBC复发的平均时间为148个月.
- 不一致的TNBC和一致的ER+/HER2-队列之间的临床病理学特征相似.
- 与一致队列相比,不一致的TNBC队列中 (30%) 的PTEN无活化突变明显更频繁 (5.5%,p=0.007).
结论:
- 在复发性乳腺癌中,PI3K/AKT/PTEN通路可能在过渡到荷尔蒙独立方面发挥关键作用.
- PTEN的改变可能是驱动HR损失和进展到TNBC表型的关键机制.
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