在两个患有新型OPA1拼接变异的兄弟姐妹中,同时出现主导性视力缩和青少年绿眼
Gloria Roberti1, Antonio Calabrese2, Michele Valiante3
1IRCCS - Fondazione Bietti, Rome, Italy. gloria.roberti@fondazionebietti.it.
Documenta ophthalmologica. Advances in ophthalmology
|January 13, 2026
概括
青少年青光眼 (JG) 可能被误诊. 一种新型的OPA1基因变异导致兄弟姐妹的主导视力缩 (DOA),突出了在JG患者中考虑DOA的必要性.
科学领域:
- 眼科医生 眼科 眼科
- 遗传学 遗传学 是一个
- 神经科学是一个神经科学.
背景情况:
- 青少年青光眼 (JG) 是儿童视力损失的重要原因.
- 主导视力缩 (DOA) 是一种渐进的视神经病变,通常在成年时出现.
- 遗传因素在视神经病变的病因学中起着至关重要的作用.
研究的目的:
- 报告两个最初被诊断为JG的兄弟姐妹的临床表现和遗传发现.
- 为了确定这些兄弟姐妹的视神经病变的潜在遗传原因.
- 调查JG和DOA之间的潜在重叠.
主要方法:
- 临床评估包括眼内压力 (IOP) 测量,视野测试和光学连贯性断层扫描 (OCT).
- 整体外基因组测序 (WES) 用于识别遗传变异.
- 根据ACMG/AMP指导方针对已识别的变种进行分类.
主要成果:
- 两个最初被诊断为JG的兄弟姐妹被发现具有一种新的致病性OPA1拼接变体 (NM_130837.3:c.611-2A>T).
- 两个兄弟姐妹都表现出视神经白,视野缺陷和色彩视觉减少,与DOA一致.
- 男性试验对象呈现出高的内压,表明同时出现JG和DOA,而他的妹妹只显示DOA.
结论:
- 这一案例系列强调了在儿童视觉神经病变的差异诊断中考虑DOA的重要性,特别是最初被怀疑是JG.
- 这些发现表明,JG和DOA之间存在潜在的共享病理生理学,可能涉及线粒体功能障碍和视网膜质细胞脆弱性.
- 基因检测对于准确诊断和了解视神经病变的谱系至关重要.
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