通过针对性下一代测序进行临床表征和分子分析,在一个大型印度队列中,有46个XY性别发育差异,通过针对性下一代测序进行临床表征和分子分析
Vandana Jain1, Sukanya Priyadarshini1, Rajni Sharma1
1Division of Pediatric Endocrinology, All India Institute of Medical Sciences, New Delhi, India.
Clinical endocrinology
|March 8, 2026
概括
基因检测在46%的印度儿童中发现了分子诊断,这些儿童在性别发育 (DSD) 中有46,XY差异. 类固醇酶SRD5A2,雄激素受体 (AR) 和NR5A1基因在这些DSD病例中最常见.
科学领域:
- 遗传学 是一个遗传学.
- 内分泌学 在内分泌学.
- 儿科 儿科 儿科
背景情况:
- 46,性别发育的XY差异 (DSD) 代表了一组多样化的疾病.
- 准确的分子诊断对于指导患者管理,了解病理生理学和评估瘤和外阴问题的风险至关重要.
研究的目的:
- 通过循序渐进的基因测试方法,确定46XY DSD的印度儿童分子诊断的产量.
- 为了确定这个队列中最常见的相关基因.
主要方法:
- 对147名患有46,XY DSD的儿童进行了全面的临床,生化和放射性评估.
- 阶段性基因测试包括SRD5A2和AR的向测序,其次是155个基因小组的下一代测序 (NGS) 对于剩余的病例.
- 收集了长度临床数据.
主要成果:
- 在46% (68/147) 的队列中实现了分子诊断.
- 在44/75名怀疑有5α-减少酶2型缺乏症/雄激素不敏感综合征 (AIS) 的患者中,发现了SRD5A2和AR的致病变体.
- 在12个基因中,NGS在20/103名儿童中发现了12个基因的变异,NR5A1是最常见的 (7%).
结论:
- 桑格测序和NGS的综合方法使得46%的46,XY DSD的印度队伍能够进行分子诊断.
- 在被研究的人群中,SRD5A2,AR和NR5A1是最经常涉及的基因.
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