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根据最新的贝斯托芬-1结构-功能相关性,在法国大型队列中进行了新型BEST1变异的表征

Joan Bitan¹, Anaïs F Poncet¹, Claire Lecigne¹

¹University of Lille, INSERM, CHU-Lille, U1172 - Lille Neuroscience & Cognition Research Center (LilNCog), Lille, France.

Investigative ophthalmology & visual science

|September 2, 2025

概括

这项研究更新了关于贝斯特罗芬-1 变异的知识,将其分类为致病或可能致病的93. 3%. 鉴定出特定的法国人群变异,加强了皮表皮病的诊断.

科学领域:

遗传学
分子生物学
眼科眼科

背景情况:

贝斯特罗芬-1 (BEST1) 基因变异与贝斯特罗芬病,一组遗传性视网膜疾病有关.
准确的变种分类对于诊断和理解这些疾病至关重要.
现有的数据库和患者队列为更新知识综合提供了机会.

研究的目的:

更新对贝斯特罗芬-1 (BEST1) 的结构和功能的理解.
评估BEST1-莱登开放变异数据库 (LOVD) 和法国队列中报告的变异的致病性.
识别特定人群的变异,并提高贝斯特罗菲诺病的诊断准确性.

主要方法:

来自最新的BEST1-LOVD数据库 (2024年10月) 的精选独特变体.
分析了450名法国患者的BEST1变体 (2008-2024年).
通过美国医学遗传学和基因组学学院 (ACMG) 的标准进行了全面的in silico分析 (DNA,RNA,蛋白质水平) 和文献审查,对变种进行了分类.

主要成果:

详细介绍了LOVD的488种变异;在法国患者中发现了150种变异,其中包括40种新变异.
只有八种变种被归类为未知意义的.
在3. 8%的患者中发现了复发性法国群体变异 (例如,p.

结论:

在法国群体中突出出特定的变异,影响蛋白质分布.
通过in silico分析将93.3%的变体重新归类为可能致病或致病性.
通过改进变异性致病性评估,加强了贝斯特罗菲诺病的临床诊断.

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