在II-III阶段的HER2-阳性乳腺癌中,MRI引导的新辅助化疗持续时间的优化 (TRAIN-3):多中心,单臂,第二阶段研究
Anna van der Voort1, Fleur M Louis1, Mette S van Ramshorst1
1Department of Medical Oncology, Netherlands Cancer Institute, Amsterdam, Netherlands.
The Lancet. Oncology
|April 8, 2024
概括
根据HER2阳性乳腺癌的放射性反应,根据HER2阳性乳腺癌的放射性反应量身定制新辅助化疗的持续时间,可能会减少治疗副作用. 早期的MRI完整放射性反应可以识别具有荷尔蒙受体阴性瘤的患者,这些患者可能会从更短的化疗方案中受益.
科学领域:
- 在瘤学瘤学.
- 医疗成像医学成像
- 药理学 药理学是指药理学的学科.
背景情况:
- 阶段II-III HER2阳性乳腺癌患者通常接受新辅助化疗和针对HER2的药物.
- 虽然更多的化疗周期改善了病理完整反应率,但早期反应很常见.
- 根据放射性反应调查量身定制的化疗持续时间至关重要.
研究的目的:
- 评估化疗持续时间是否可以通过HER2阳性乳腺癌的放射反应来个性化.
- 评估放射性和病理性反应率作为二次终点.
- 分析接受新辅助治疗的患者的毒性数据.
主要方法:
- 一个单臂,第二阶段研究 (TRAIN-3) 招募了467名患有II-III期HER2阳性乳腺癌的患者.
- 患者接受了帕克利塔克塞尔,特拉斯图祖马布,卡博普拉丁和珀图祖马布的新辅助化疗.
- 通过乳房MRI和淋巴结活检监测反应;手术发生在完整的放射性反应或九个周期后.
主要成果:
- 在荷尔蒙受体阴性瘤中,73%的患者在9个周期后实现了放射性完全响应;其中87%的患者有病理性完全响应.
- 在激素受体阳性瘤中,59%的患者在9个周期后达到放射性完全响应;其中53%的患者有病理性完全响应.
- 最常见的3-4级不良事件包括中性质减退 (37%),贫血 (16%),腹 (12%);没有发生与治疗相关的死亡.
结论:
- 三分之一的荷尔蒙受体阴性,HER2阳性乳腺癌患者在三次新辅助疗程后实现了病理完整反应.
- 乳腺MRI完全响应可以识别具有荷尔蒙受体阴性瘤的早期响应者,从而可能允许更短的化疗.
- 需要进一步验证,特别是对于激素受体阳性瘤,以确认基于成像的治疗策略的好处.
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