超越CHD7基因:揭示临床怀疑的CHARGE综合征中的遗传多样性
Dohyung Kim1,2, Ji-Hee Yoon1,2,3, Hyunwoo Bae1,2,4
1Department of Pediatrics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
Journal of human genetics
|February 25, 2025
概括
通过对CHD7基因的基因检测,诊断CHARGE综合征得到了改善. 这项研究在大多数符合诊断标准的患者中发现了CHD7变异,并在没有CHD7突变的患者中确定了其他遗传原因.
科学领域:
- 遗传学 是一个遗传学.
- 医学诊断 医学诊断 医学诊断
- 罕见疾病 罕见疾病
背景情况:
- 查奇综合征的诊断依赖于像Verloes或Hale这样的临床标准.
- 准确的基因诊断对于理解CHARGE综合征和相关疾病至关重要.
研究的目的:
- 评估CHD7基因测试的诊断产量,使用已确立的CHARGE综合征标准.
- 在怀疑患有CHARGE综合征但对CHD7变异呈阴性患者中确定替代遗传原因.
主要方法:
- 对59名受试者的临床数据和遗传检测结果 (CHD7测序,CMA,外基因组/基因组测序) 的回顾性审查.
- 基于遵守Verloes或Hale标准的诊断率的分析.
- 对CHD7阴性患者遗传缺陷的调查.
主要成果:
- 在78%的患者中发现了CHD7致病变体,满足至少一个标准,87%的患者满足两个标准.
- 在符合这两个标准的患者中没有检测到CHD7变异.
- 在CHD7阴性患者中,23人中有7人患有其他被诊断的遗传疾病,包括沃尔夫-希尔斯霍恩综合征和PLCB4,TRRAP和OTX2.2的变异.
结论:
- 维洛斯和海尔标准有效地识别了可能患有CHD7变异的患者.
- 对于疑似CHARGE综合征而言,全面的遗传评估至关重要,因为其他遗传性疾病也可能呈现出类似的表型.
- 七种遗传疾病的整体诊断率在这个队列中达到73%.
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