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针对皮肤黑色素瘤的向DNA测序识别了预后和预测性改变
Alexandra M Haugh1, Robert C Osorio2,3, Rony A Francois4
1Department of Medicine, Division of Hematology/Oncology, Helen Diller Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA 94142, USA.
Cancers
|April 13, 2024
概括
皮肤黑色素瘤 (CM) 中的NRAS突变与更糟糕的生存率有关. 在CM患者中,高瘤突变负担 (TMB) 预测了双免疫检查点抑制 (ICI) 的更好的无进展生存率.
科学领域:
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
- 免疫治疗是一种免疫疗法.
背景情况:
- 皮肤黑色素瘤 (CM) 的分类包括BRAF,NRAS,NF1突变和三重野生型 (TWT) 组.
- 这些分子亚型在向治疗和免疫检查点抑制 (ICI) 背景下的临床影响需要进一步阐明.
研究的目的:
- 将目标DNA测序数据与CM患者的临床结果相结合.
- 澄清不同CM分子子组的临床意义,特别是与新兴疗法相关.
主要方法:
- 254名CM患者进行了针对性下一代测序的回顾性队列研究.
- 对临床和分子特征的分析,包括BRAF,NRAS,NF1和瘤突变负担 (TMB) 的突变.
主要成果:
- 与其他分子子组相比,NRAS突变CM的整体存活率明显较差.
- 在接受双重ICI治疗 (抗CTLA4和抗PD1) 的患者中,升高的TMB与明显更长的无进展生存率有关.
- 与BRAF或NRAS突变瘤相比,NF1突变瘤表现出更多的共同变异基因,大多数TWT瘤具有Ras/MAPK通路突变.
结论:
- NRAS突变是CM中整体存活时间的负预后因素.
- 瘤突变负担 (TMB) 可能作为一种预测生物标志物,用于对黑色素瘤中双重免疫检查点抑制的反应.
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