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在六个中国家族中鉴定具有自体主导遗传性角质球菌的病原性变体:病原性分析和可变的表型

Xiaoyu Huang¹, Meijiao Ma², Xiaofei Chen²

¹Dalian Medical University, Dalian, China.

International ophthalmology

|September 5, 2025

概括

这项研究确定了中国家庭中与自体主导角膜炎 (adKC) 相关的6种ZNF469,KRT12,COL8A2,COL18A1,PMS2和DPP6基因的新型遗传变异. 基因检测可能有助于早期诊断和干预这种视力损害的疾病.

科学领域:

眼科眼科
遗传学
分子生物学

背景情况:

角膜 (KC) 是一种双侧的,不对称的角膜疾病,导致视力丧失.
确切的KC原因尚不清楚.
鉴定基因因素对于了解KC病变至关重要.

研究的目的:

为了研究患有角膜的中国家庭的致病基因变异.
用整个外体测序 (WES) 来进行遗传分析.

主要方法:

使用Pentacam和Corvis ST进行角膜分析.
整个外体序列 (WES) 的探测器.
用于变种分类的桑格测序,qPCR和ACMG指南.
蛋白质与蛋白质相互作用的 STRING 分析.

主要成果:

发现了六种新型变异:四种误解 (ZNF469,KRT12,COL8A2,COL18A1) 和一个移变异 (PMS2).
在DPP6中也检测到一个副本编号变异.
在ZNF469,KRT12,COL8A2,COL18A1,PMS2和DPP6的变种被分类为可能致病或致病.
COL8A2,COL18A1,FN1,ZNF469和KRT12组成一个相互连接的网络;DPP6通过FN1影响KC.

结论:

在ZNF469,KRT12,COL8A2,COL18A1,PMS2和DPP6中出现的新变异与自身主导的角质 (adKC) 有关.
在受影响的家庭中观察到可变的表达性和不规则的支配性.
影响角膜结构的遗传变异可能是KC的基础;遗传测试可以支持早期诊断和治疗.

关键词:

角膜生物力学角膜地形基因变异角质球病原性分析

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Single Nucleotide Polymorphisms-SNPs

Single Nucleotide Polymorphisms-SNPs

A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...