在遗传性视网膜发育不良症中长时间阅读测序:系统性审查
Mariam Ibrahim1, Alain Chebly2, Said El Shamieh1
1Molecular Testing Laboratory, Department of Medical Laboratory Technology, Faculty of Health Sciences, Beirut Arab University, Beirut, Lebanon.
Ophthalmology science
|February 24, 2026
概括
长读数测序 (LRS) 通过识别短读数方法遗漏的复杂变异来增强遗传视网膜变 (IRD) 的遗传诊断. 这次审查强调了LRS的重点.
科学领域:
- 遗传学 遗传学 是一个
- 眼科医生 眼科 眼科
- 基因组医学是基因组医学.
背景情况:
- 遗传性视网膜发育不良 (IRDs) 是导致失明的首要原因,每3000人中约有1人受到影响.
- 下一代测序 (NGS) 已经改善了诊断,但仍留下约30%的IRD病例遗传未解决.
- 长读测序 (LRS) 提供了一种补充方法来识别结构性和深层内基突变等复杂变体.
研究的目的:
- 系统地审查LRS在IRD遗传诊断中的应用和影响.
- 综合关于LRS在IRD患者中识别以前难以捉摸的遗传变异的能力的发现.
- 评估LRS在弥合IRD遗传学的诊断差距方面的潜在作用.
主要方法:
- 在PubMed的系统文献搜索中,寻找IRD遗传学中的LRS研究 (2018-2025).
- 纳入标准:用于人类IRD诊断的LRS应用,英语全文,报告的变种.
- 数据综合遵循PRISMA指导方针;使用既有工具进行质量评估.
主要成果:
- 使用LRS识别了88种IRD变异,包括31%的结构变异,31%的单核酸变异,19%的拼接部位变异,11%的内接变异和8%的深层内部变异.
- LRS扩大了已知的IRD遗传格局,在81名患者中识别或提炼了34个基因的变异.
- LRS在分阶段和解决具有挑战性的基因组区域方面表现出实用性.
结论:
- LRS有效地解决了用于IRD遗传诊断的短读测序的局限性.
- 虽然分析严谨度很高,但大多数研究缺乏正式的诊断准确度指标.
- 需要进一步的前性研究来确定LRS对IRD的临床实用性和实施标准.
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