基因变异和46,XY淋巴体失调的分子概况使用全外体序列测序46,XY淋巴体失调的基因变异和分子概况
Ning Zhang1,2,3, Shuoming You1,2, Jingjing Guo1,2
1Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.
Frontiers in endocrinology
|April 28, 2025
概括
整体外基因组测序在患有46,XY淋腺失调 (GD),性发育障碍 (DSD) 的患者中发现了GATA4,NR5A1和DHX37基因的新型变异. GATA4的N端指域似乎对46,XY GD的病变产生至关重要.
科学领域:
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
- 内分泌学 在内分泌学.
背景情况:
- 超过60%的46,XY淋腺失调 (GD) 病例,性发育障碍 (DSD),由于遗传和临床异质性而无法解释.
- 全外体序列测序 (WES) 是用于识别DSDs中的遗传变异的关键诊断工具.
- 了解46,XY GD的遗传原因对于阐明病原和基因型-表型相关性至关重要.
研究的目的:
- 为了研究46,XY GD的遗传病因,使用WES.
- 确定导致46,XY GD的新型致病变体.
- 探索特定基因域在46,XY GD.病变发生中的作用.
主要方法:
- 整体外体序列测序 (WES) 和血统研究在6名患有46,XY GD的患者和6名家族对照进行.
- 桑格测序证实了已识别的变体.
- 进行了in silico功能预测,蛋白质结构分析和热力学分析,以评估变异性病原性.
- 在患有46,XY GD和/或先天性心脏病 (CHD) 的患者中分析了GATA4变异.
主要成果:
- 鉴定出了三个新的致病变体:GATA4:c.725G>C(p.Cys242Ser),NR5A1:c.370_380del(p.Pro124Glyfs*21) 和DHX37:c.2020C>T(p.Arg674Trp).这些新型的致病变体包括:
- 还发现了之前报告的MAP3K1:c.1016G>A(p.Arg339Gln) 变种.
- 46,XY GD中的GATA4变体主要位于N端指 (N-ZF) 域,与孤立心脏病的变体不同.
结论:
- GATA4的N-ZF域可能在46,XY GD的发病过程中起到特定的作用.
- 这项研究加深了对46,XY GD的遗传基础的理解.
- 这些发现可能有助于诊断和管理46,XY GD.
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