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脑皮皮质脂质病变的表型与NF1基因中的马赛克双样性致病变体相关

Steven Smeijers¹, Hilde Brems², Alexander Verhaeghe³

¹Department of Neurosurgery, KU Leuven University Hospitals, Leuven, Belgium steven.smeijers@uzleuven.be.

Journal of medical genetics

|June 2, 2024

概括

脑皮皮质脂质症 (ECCL) 可能与神经纤维素瘤类型1 (NF1) 有关. 在早期发育过程中双性NF1失活可能会通过影响RAS-MAPK通路导致ECCL.

科学领域:

遗传学是一个遗传学.
发展生物学发展生物学
神经学神经学

背景情况:

脑皮性脂质炎 (ECCL) 是一种罕见的先天性疾病,影响眼睛,皮肤和中枢神经系统.
之前在ECCL患者中已经确定了FGFR1和KRAS的马赛克激活变异.
神经纤维素瘤类型1 (NF1) 是一种遗传性疾病,其特征是沿神经的瘤生长.

研究的目的:

在一个患有NF1.1的患者身上调查ECCL的遗传基础.
探索NF1致病变体和ECCL表型之间的潜在联系.
了解体质马赛克主义在ECCL发展中的作用.

主要方法:

血液,脑组织和病变的遗传分析.
在NF1基因中识别生殖线和体质变异.
对双基NF1无活化及其胚胎起源的分析.

主要成果:

该患者患有生殖系致病性NF1变体和第二次感染的致病性NF1变体,导致双基NF1失活的体质马赛克.
这种双性NF1缺陷在左脑半与严重的局部先天性异常相关.
大病变的相同变体证实了早期胚胎的第二次打击,涉及神经细胞.

结论:

ECCL可能代表与NF1致病变体相关的各种形.
起源于早期胚胎发生的马赛克NF1无菌体可以导致ECCL表型.
通过在RAS-MAPK路径上的融合,不同的马赛克机制可以导致ECCL.

关键词:

遗传学是一个遗传学.神经学神经学神经外科神经外科现象型现象型是一种现象型.

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