三级淋巴体结构可能会在SMARCB1缺乏的髓性细胞癌中促进免疫检查点抑制反应
Yanfeng Tang1, Junru Chen1, Mengxin Zhang2
1Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
NPJ precision oncology
|November 14, 2024
概括
免疫检查点抑制剂加上氨酸激酶抑制剂在治疗晚期SMARCB1缺陷髓性细胞癌 (RCC) 方面表现有前途. 成熟的三级淋巴体结构与这种组合治疗的更好的反应相关.
科学领域:
- 在瘤学瘤学.
- 生殖尿路病理学
- 癌症免疫学 癌症免疫学
背景情况:
- 根据世卫组织的分类,SMARCB1的丧失是细胞癌 (RCC) 的关键突变.
- 尽管目前的治疗方法,但SMARCB1缺陷髓性RCC的预后不佳.
- 对这种侵略性亚型需要新的治疗策略.
研究的目的:
- 评估转移性SMARCB1缺陷髓性RCC患者的治疗结果.
- 探索治疗反应的分子相关性.
- 评估免疫检查点抑制剂 (ICI) 加氨酸激酶抑制剂 (TKI) 组合疗法的疗效.
主要方法:
- 五名转移性SMARCB1缺陷髓性RCC患者的回顾性分析.
- 用一线ICI加上TKI组合疗法的治疗.
- 转录基因分析和多重免疫光学 (mIF) 检测分子相关物.
主要成果:
- 四名患者接受了ICI + TKI联合治疗,达到12.3个月的中位数无进展生存期 (mPFS).
- 转录组学表明,在SMARCB1缺乏的髓性RCC中,与免疫相关的途径得到了丰富.
- 通过mIF观察到的成熟的三级淋巴体结构 (TLS) 与基于ICI的治疗的良好反应相关.
结论:
- 基于ICI的组合疗法在SMARCB1缺乏的髓性RCC中显示出有前途的抗瘤活性.
- 成熟的TLS可能是预测对基于ICI的组合疗法的反应的生物标志物.
- 需要进一步的研究来优化对这种RCC亚型的治疗.
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