未知原发性状细胞癌 (SCCUP):一个基因组景观研究
H R Robinson1, S Lakritz1, D C Pavlick2
1Department of Medicine, Division of Medical Oncology, University of Colorado Anschutz Medical Campus, Aurora, USA.
ESMO open
|June 11, 2025
概括
未知初级状细胞癌 (SCCUP) 的综合基因组分析确定了可向的基因组变异和生物标志物. 这些发现可以指导SCCUP患者的分子向疗法和免疫疗法.
科学领域:
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 癌症生物标志物 癌症生物标志物
背景情况:
- 未知初级状细胞癌 (SCCUP) 缺乏确定的初级瘤部位,尽管进行了评估.
- 综合基因组分析 (CGP) 已经使其他未知的原发性癌症受益,但SCCUP的基因组景观尚未定义.
- 这项研究旨在定义SCCUP的基因组景观,以找到治疗点和生物标志物.
研究的目的:
- 在SCCUP中使用CGP.确定潜在的治疗点和特征生物标志物.
- 在SCCUP中定义基因组改变 (GA),微卫星不稳定 (MSI) 状态,瘤突变负担 (TMB) 和PD-L1表达.
- 为了将基因组发现与临床呈现地点相关联.
主要方法:
- 从FoundationCORE®数据库中确定了443个高级SCCUP案例.
- 进行DNA测序来分析GA,MSI,TMB,基因组签名和病毒读数.
- 通过免疫组织化学评估PD-L1表达.
主要成果:
- 常见的SCCUP部位:淋巴结 (41.1%),肝脏 (15.6%),软组织 (15.1%).
- 常见的潜在可向的气体:PIK3CA (27.3%),PTEN (15.1%),MTAP (13.1%),KRAS (10.4%). 这几种气体是最常见的.
- 免疫治疗的生物标志物:MSI高的2.0%,TMB≥10个突变/兆基的33.9%,PD-L1阳性的69.1% (TPS≥1%).
- 肝转移与较少的GA和较低的TMB相关.
- 与HPV和APOBEC特征相关的阴道/骨盆/背部部部位.
结论:
- CGP在SCCUP中确定了可操作的GA,支持分子向疗法.
- SCCUP经常显示生物标志物可以预测对免疫检查点抑制剂的反应.
- 基因组发现可以指导SCCUP患者的治疗决策.
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