CABP4 中的一种新型同卵无义变体会导致静止锥体/杆突触功能障碍。

IF 1.2 4区 医学 Q4 GENETICS & HEREDITY
Blake M Hauser, Emily Place, Rachel Huckfeldt, Demetrios G Vavvas
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引用次数: 0

摘要

导言:CABP4 基因变异导致的表型被归入先天性静止性夜盲症谱系,但也有报道称,临床异常被归类为视锥和视杆细胞的突触疾病更为准确。我们报告了一名主诉非进行性视力下降和畏光但无夜盲症的患者的新型 CABP4 同源无义变异:全面眼部检查、眼底照片、自发荧光、光学相干断层扫描、视网膜电图以及已知遗传性视网膜疾病相关基因的靶向测序:一名 25 岁男子接受了 13 年的监测,主诉视力终生稳定下降(20/150)、色觉受损(14 块板中的 1 块)、小振幅眼球震颤和畏光,但没有夜盲症。他还患有远视(+7D),视网膜电图显示他的视杆和视锥反应明显减弱。靶向基因分析发现,CABP4 基因中的 c.181C>T,p.(Gln61*)新型同源变异是其临床表现的基础:结论:CABP4 基因的一个新型变异与静止视锥和视杆细胞功能障碍有关,导致视力下降、色觉障碍和畏光,但不会导致夜盲症。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A novel homozygous nonsense variant in CABP4 causing stationary cone/rod synaptic dysfunction.

Introduction: Variants in the CABP4 gene cause a phenotype to be included in the spectrum of congenital stationary night blindness, though some reports suggest that the clinical abnormalities are more accurately categorized as a synaptic disease of the cones and rods. We report a novel homozygous nonsense variant in CABP4 in a patient complaining of non-progressive reduced visual acuity and photophobia but not nyctalopia.

Methods: Complete ocular examination, fundus photographs, autofluorescence, optical coherence tomography, electroretinography, and targeted sequencing of known inherited retinal disease-associated genes.

Results: A 25-year-old man monitored for 13 years complains of a lifelong history of stable reduced visual acuity (20/150), impaired color vision (1 of 14 plates), small-amplitude nystagmus, and photophobia without nyctalopia. He is also hyperopic (+7D), and his electroretinography shows significantly reduced rod and cone responses. Targeted genetic analysis revealed a novel homozygous variant in the CABP4 gene at c.181C>T, p. (Gln61*) underlying his clinical presentation.

Conclusions: A novel variant in CABP4 is associated with stationary cone and rod dysfunction resulting in decreased acuity, color deficit, and photophobia, but not nyctalopia.

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来源期刊
Ophthalmic Genetics
Ophthalmic Genetics 医学-眼科学
CiteScore
2.40
自引率
8.30%
发文量
126
审稿时长
>12 weeks
期刊介绍: Ophthalmic Genetics accepts original papers, review articles and short communications on the clinical and molecular genetic aspects of ocular diseases.
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