林奇综合征患者发育的肉瘤富含形软组织肉瘤,对免疫疗法敏感
F Poumeaud1, T Valentin2, N Fares3
1Department of Medical Oncology, Oncopole Claudius Regaud, Toulouse, France; Department of Digestive Medical Oncology, Toulouse University Hospital, Toulouse, France; Toulouse Cancer Research Centre, Toulouse, France.
概括
林奇综合征 (LS) 患者的肉瘤通常是多形的,特别是不分化的多形肉瘤 (UPS) 和多形肌肉肉瘤 (pRMS). 这些发现支持MMR查,并表明免疫疗法可能有利于这些罕见的肉瘤亚型.
科学领域:
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
- 病理学 病理学 病理学
背景情况:
- 瘤通常与林奇综合征 (LS) 无关.
- 然而,在LS患者中报告了越来越多的肉瘤.
- 这些瘤的临床和瘤特征仍然在很大程度上是未知的.
研究的目的:
- 描述林奇综合征患者肉瘤的病理和临床特征.
- 调查不匹配修复 (MMR) 状态在这些瘤中的潜在作用.
- 评估免疫治疗在LS相关的肉瘤中的疗效.
主要方法:
- 萨克林奇研究建立了第一个国家对LS患者肉瘤的回顾性研究.
- 从法国的23个中心收集数据,通过两个国家网络识别患者.
- 对81名参与患者的病理和临床数据进行了分析.
主要成果:
- 分析了81名患有LS相关瘤的患者.
- 大多数是软组织肉瘤 (83%),具有高比例的形亚型 (88%),包括UPS (36%) 和pRMS (21%).
- 值得注意的是,40%的患者在他们的第一个瘤事件中患有瘤,40%的患者携带MSH2致病变体. 接受免疫治疗的50%的患者表现出客观反应.
结论:
- 与林奇综合征相关的肉瘤显示出多形类型的丰富,特别是UPS和prms.
- 建议对MMR状态进行评估,以进行瘤遗传学查和治疗指导,以治疗这些罕见的组织型.
- 免疫治疗的客观响应率为50%,表明它对这些瘤的潜在益处.
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