在不匹配修复缺陷或微卫星不稳定的结直肠癌中探索对免疫检查点抑制剂的耐药性
Clara Salva de Torres1, Evelyn Elias2, Caterina Vaghi1
1Medical Oncology Department, Vall d'Hebron University Hospital, Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain.
Cancer treatment reviews
|January 14, 2026
概括
免疫检查点抑制剂 (ICI) 有效治疗不匹配修复缺陷 (dMMR) 或微卫星不稳定性高 (MSI-H) 的结直肠癌 (CRC). 然而,耐药性需要探索生物标志物和新疗法,以改善所有患者的治疗结果.
科学领域:
- 在瘤学瘤学.
- 免疫治疗是一种免疫疗法.
- 分子诊断学 分子诊断学
背景情况:
- 不匹配修复缺陷 (dMMR) 或高微卫星不稳定性 (MSI-H) 定义了一个独特的结直肠癌 (CRC) 亚型.
- 免疫检查点抑制剂 (ICI) 是dMMR/MSI-HCRC的标准治疗方法,显示了持久的反应和改善的生存率.
- 对ICI的初级或获得性耐药性发生在多达三分之一的患者中,需要进一步研究.
研究的目的:
- 审查ICI在dMMR/MSI-HCRC中的临床疗效.
- 探索这种患者群体中ICI耐药性的基础机制.
- 确定预测性生物标志物和克服耐药性的新疗法策略.
主要方法:
- 临床试验和临床前研究的综合文献综述.
- 对抗机制的分析,包括内在和外在因素.
- 对ICI反应的潜在预测生物标志物的评估.
- 讨论新兴的治疗方法和组合策略.
主要成果:
- 在dMMR/MSI-H CRC中ICI的确定的临床益处.
- 确定了导致原发性和获得性耐药性的关键机制.
- 突出了各种生物标志物的潜力,以预测治疗反应.
- 概述了包括组合疗法在内的有希望的新型治疗策略.
结论:
- ICI在dMMR/MSI-HCRC中非常有效,但耐药性仍然是一个挑战.
- 了解耐药机制和识别预测生物标志物对于优化患者选择至关重要.
- 需要创新的治疗策略,包括组合方法和新药,以改善所有dMMR/MSI-HCRC患者的治疗结果.
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