在转移性结直肠癌中,HER2状态的时间和空间异质性
Flavia D'Angelo1, Franck Monnien1, Alexis Overs2
1Department of Pathology, University Hospital of Besançon, 3 Boulevard Alexandre Fleming, Besancon, 25000, France.
Diagnostic pathology
|June 22, 2024
概括
结直肠癌 (CRC) 和肝转移中的HER2状态显示出显著的差异. 这表明可能需要连续的HER2测试来优化转移性CRC (mCRC) 的治疗.
科学领域:
- 在瘤学瘤学.
- 胃肠病学 胃肠病学
- 分子病理学分子病理学
背景情况:
- 针对 HER2 过度表达的转移性结直肠癌 (mCRC) 的 HER2 向疗法正在出现.
- 关于原发性CRC和肝转移之间的HER2状态一致性存在有限的数据.
- 了解这种一致性对于指导mCRC管理中的临床决策至关重要.
研究的目的:
- 为了比较原发性结肠直肠癌 (CRC) 和配对性肝转移之间的HER2表达状态.
- 评估转移性结直肠癌中HER2异质性的程度.
- 根据HER2状态为mCRC患者提供治疗策略的信息.
主要方法:
- 对108名mCRC患者的回顾性分析,并配对了原发性瘤和肝转移样本.
- 由匹配的初级CRC和肝转移组织构建的组织微阵列.
- 通过免疫组织化学和现场杂交评估的HER2状态,使用Valtorta的标准进行分析.
主要成果:
- 在初级CRC和肝转移之间观察到HER2状态的19%差异率.
- 在患有多重肝转移的患者中,差异率增加到21%.
- 在同步转移和超时转移之间没有发现HER2状态对应的显著差异.
结论:
- 在初级CRC和肝转移之间存在HER2状态的显著时间和空间异质性.
- 这种异质性质疑仅在原发性瘤上评估HER2状态的可靠性.
- 建议在疾病进展期间对HER2状态进行顺序评估,以获得最佳的mCRC治疗策略.
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