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关于胰腺癌细胞块的综合基因组研究

Ricella Souza da Silva¹, Maria João Pina¹, Luís Cirnes¹

¹IPATIMUP Diagnostics, IPATIMUP-Institute of Molecular Pathology and Immunology of Porto University, 4200-135 Porto, Portugal.

Diagnostics (Basel, Switzerland)

|May 11, 2024

概括

通过内镜超声波引导细针吸收 (EUS-FNA) 进行的细胞块对于胰腺管道腺癌 (PDAC) 的综合基因组分析是有效的. 这种方法在大多数情况下成功识别了可操作的基因变异,有助于精确的细胞病理学.

科学领域:

在瘤学瘤学.
基因组学就是基因组学.
细胞病理学细胞病理学

背景情况:

胰腺癌 (PDAC) 是高度致命的,通常是晚期诊断的,治疗选择很少.
基因组分析对于理解PDAC的分子基础和确定治疗点至关重要.
来自EUS-FNA的细胞块 (CB) 越来越多地用于诊断和分子分析.

研究的目的:

评估使用CB EUS-FNA的PDAC标本下一代测序 (NGS) 进行全面基因组分析的可行性.
从这些样本中确定从NGS获得足够的核酸的成功率.
确定PDAC中常见的基因组变化和临床显著的基因变异.

主要方法:

通过CB EUS-FNA获得的PDAC标本的分析.
应用大型基因面板,使用下一代测序 (NGS).
对核酸充足度,瘤细胞百分比和DNA质量进行测序的评估.

主要成果:

55%的PDAC CB病例产生了足够的核酸用于NGS,平均瘤细胞含量>30%.
尽管存在诸如DNA数量低等挑战,但测序显示出令人满意的质量,并检测到基因组变化.
在84.6%的病例中,至少存在一种基因变异,包括KRAS,TP53和CDKN2A突变.

结论:

使用EUS-FNA的细胞块样本,可以对PDAC进行全面的分子分析,即使质量高,DNA度最小,也可行.
这一策略提供了有价值的诊断信息,揭示了遗传环境,并确定了潜在的治疗点.
利用CB EUS-FNA进行基因组分析,支持精确的细胞病理学方法来治疗胰腺癌.

关键词:

细胞块的细胞块.细胞病理学细胞病理学大规模的基因组面板.分子测试试验分子测试胰腺癌是一种癌症.

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