与POC1B相关的形缩症的表型和基因型特征
Tariq A Alzahem1,2, Abdulwahab AlTheeb1, Rola Ba-Abbad1
1Ocular Genetics Service, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia.
Ophthalmic genetics
|May 29, 2023
概括
与POC1B相关的形缩症 (CD) 呈现出微妙的视网膜变化,往往会延迟诊断. 这项研究详细介绍了两个沙特家庭中不起眼的临床特征和新的遗传变异,突出了深度表型化的需要.
科学领域:
- 眼科医生 眼科 眼科
- 遗传学 遗传学 是一个
- 视网膜疾病 视网膜疾病
背景情况:
- 圆发育不良 (CD) 可以表现出最小的视网膜异常,使早期诊断复杂化.
- 细微的CD临床表现需要先进的诊断方法.
研究的目的:
- 描述沙特阿拉伯家庭中POC1B相关形变质的不显眼的临床和遗传特征.
- 为了识别与形缩相关的新型POC1B变异.
主要方法:
- 追溯案例研究分析多式联网膜成像和电联网膜学.
- 基因分析包括下一代测序和受影响个体的整个外基因组测序.
主要成果:
- 来自两个家族的三个男性患有POC1B相关的CD,视力敏度降低 (20/100-20/300) 和色彩视力缺陷.
- 眼科发现包括轻微的血管衰减,特定的光学连贯性断层扫描异常和异常的电网膜学反应.
- 在POC1B (c.672C>G; p(Tyr224*) 和c.991del; p(Arg331Glufs*13) 中发现了两种新型同卵性变异.
结论:
- 新型POC1B变异与状缩有关,表现出微妙的视网膜发现.
- 与POC1B相关的CD是一种罕见的视力障碍原因,具有欺骗性的正常 fundus 外观.
- 综合的表型定型对于诊断罕见的视网膜疾病,如POC1B相关的CD至关重要.
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