对于dMMR/MSI高的胃肠道癌症患者的新辅助免疫疗法:一个不断变化的范式
Muhammet Ozer1, Charan Thej Reddy Vegivinti2, Masood Syed3
1Department of Gastrointestinal Oncology, Dana Farber Cancer Institute, Boston, MA 02215, USA.
Cancers
|August 12, 2023
概括
免疫检查点抑制剂 (ICI) 是一种新辅助疗法,可用于治疗不匹配修复缺陷 (MMR-D) /微卫星不稳定性高 (MSI-H) 的胃肠癌. 虽然提供了器官保存的机会,但必须仔细考虑过度处理的风险.
科学领域:
- 在瘤学瘤学.
- 胃肠道癌症研究研究
- 免疫治疗是一种免疫疗法.
背景情况:
- 不匹配修复缺陷 (MMR-D) /微卫星不稳定性高 (MSI-H) 的胃肠道癌症,特别是结直肠癌,已被免疫检查点抑制剂 (ICI) 转化.
- 这些基因型经常表现出高瘤突变负担和框架转移变化,增加突变相关新抗原 (MANA) 产生,该新抗原使得效应T细胞对ICI作出反应.
研究的目的:
- 审查使用ICI用于MMR-D/MSI-H胃肠道癌症的新辅助药管理策略,包括那些患有寡基质扩散性疾病的胃肠道癌症.
- 讨论与新辅助ICI治疗在这个患者群体中相关的潜在挑战和机会.
- 为MMR-D/MSI-H胃肠道癌症的不断变化的治疗模式提供见解.
主要方法:
- 审查最近的临床试验和新辅助免疫检查点抑制剂治疗MMR-D/MSI-H胃肠道癌症的现有文献.
- 从新辅助性ICI研究中分析临床和病理反应数据.
- 讨论这些发现对治疗策略和患者管理的影响.
主要成果:
- 在MSI-H胃肠癌的临床试验中,新辅助剂ICI已经显示出深度的临床和病理反应,这表明器官保存的潜力.
- 在MMR-D/MSI-H瘤中,高瘤突变负担和MANA生成有助于它们对ICI的敏感性.
- 挑战包括在某些疾病表现的可治愈,仅需手术的环境中过度治疗的风险.
结论:
- 新辅助性ICI疗法为MSI-H胃肠道癌症提供了一个有希望的途径,提供显著的反应率和器官保存可能性.
- 仔细的患者选择和风险益处评估对于减轻过度治疗的可能性至关重要,特别是在早期疾病中.
- 这些发现突出了MMR-D/MSI-H胃肠道癌症的治疗范式的重大转变,强调了免疫治疗在新辅助环境中的作用.
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