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扩散性星系细胞瘤,AYA型,经常发生MAPK变异:报告了45名患者

Omkar Singh¹, Christopher Dampier¹, Zied Abdullaev¹

¹Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.

Acta neuropathologica

|April 9, 2025

概括

一种新发现的质瘤亚型,扩散性星细胞瘤,青少年和年轻成人类型,具有MAPK变异 (DAYA),表现出明显的表观遗传和分子特征. 这些瘤主要影响年轻人,需要仔细分类,以获得最佳的患者护理.

科学领域:

神经瘤学神经瘤学
分子病理学分子病理学
基因组学就是基因组学.

背景情况:

已经确定了IDH-wildtype扩散质瘤的一个独特的分子亚型,具有反复的MAPK通路改变.
这些瘤形成了一个独特的甲基化集群,与已建立的质瘤分类分开.

研究的目的:

描述这种新发现的质瘤亚型的临床,表观遗传和分子特征.
为这些瘤建立一个独特的分类,称为扩散性星细胞瘤,青少年和年轻成人类型,具有MAPK变化 (DAYA).

主要方法:

全基因组甲基化概况与维度减小分析.
综合测序以识别MAPK路径变化 (例如CDKN2A/2B删除,PDGFRA放大,MYCN放大,NF1变异,BRAF变化).
组织病理学审查和与分子和临床数据的相关性.

主要成果:

分析了来自45名患者的47种瘤,主要是年轻成年人的 supratentorial.
观察到高比例的特定遗传变异,包括CDKN2A/2B删除,PDGFRA放大,MYCN放大,NF1变异和BRAF变异.
与2021年世卫组织分类中的其他成人和儿科质瘤相比,瘤呈现出明显的表观遗传学特征.
组织学不同,经常显示高等级的星细胞特征,结果取决于等级和分子形状.

结论:

确定的瘤代表了一个独特的分子和表观遗传质瘤亚型,DAYA.
在这种亚型中进行分类是非常重要的,因为组织结构和结果是可变的.
这种分类有助于理解和管理青少年和年轻成年人的这种特定类型的质瘤.

关键词:

艾亚艾亚艾亚艾亚是什么意思大脑瘤大脑瘤表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.质瘤是一种质瘤.在HGG_B的基础上.这就是MAPKK的意思.甲基化概况分析

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