在基因组时代对性发育障碍的方法
Sukanya Priyadarshini1, Rajni Sharma1, P S N Menon2
1Division of Pediatric Endocrinology, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, 110029, India.
Indian journal of pediatrics
|January 19, 2026
概括
基因检测有助于诊断性发育障碍 (DSD),为46XY DSD.患者提供清晰度. 像下一代测序这样的先进方法可以提高诊断产量,指导未来的管理.
科学领域:
- 遗传学 遗传学 是一个
- 内分泌学 在内分泌学.
- 发展生物学 发展生物学
背景情况:
- 性发育障碍 (DSD) 涉及染色体,淋巴体或解剖性别的先天性差异.
- DSDs是按型 (46,XX,46,XY,性别染色体) 分类的.
- 虽然46,XX DSD通常与先天性上腺增生有关,但46,XY DSD基因复杂,涉及100多个基因.
研究的目的:
- 审查DSD背后的遗传机制.
- 讨论各种遗传测试模式,它们的指示,先决条件和限制.
- 概述一个算法方法在DSD遗传诊断.
主要方法:
- 对DSD的遗传机制和测试方式的审查.
- 在DSD诊断中讨论下一代测序 (NGS) 和染色体微阵列 (CMA).
- 对遗传诊断的算法方法的介绍.
主要成果:
- 在DSD中,精确的基因诊断结束了诊断旅程,并有助于预测结果.
- 先进的遗传检测 (NGS,CMA) 在46,XY DSD病例中的40-50%中实现了精确的诊断.
- 遗传检测有其局限性,包括成本,复杂的数据分析,意义不明的变体 (VUS) 和潜在的负面结果.
结论:
- 基因检测对于诊断DSD,指导性别发展,青春期和外阴特征的管理至关重要.
- 测试选择应平衡诊断产量和成本,以临床表型为指导.
- 对DSD的遗传测试需要进行测试前咨询,并与儿科内分泌学家和遗传学家进行合作.
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