两个鳃耳综合征家系的临床表型及致病变异分析

Analysis of Clinical Phenotype and Pathogenic Variations in Two Families with Branchio-oto Syndrome

何万里;许红恩;刘梦丽;张腾;孙淑萍;卢伟

1:郑州大学第一附属医院耳鼻喉医院耳科

2:郑州大学医学科学院精准医学中心

摘要
目的 探寻两个鳃耳综合征家系的致病原因。方法 收集2个家系临床资料,利用全外显子组测序和Sanger测序技术检测和验证鳃耳综合征致病基因和变异。结果 2个家系中,先证者1为先天性重度感音神经性听力下降,伴耳前瘘管及颈前瘘管;先证者2在5岁时发现双耳听力下降并渐进性加重,伴耳前瘘管及颈前囊肿,现双耳为重度混合性听力损失;两例先证者均被诊断为鳃耳综合征。基因检测结果示,先证者1携带EYA1基因的无义变异:NM_000503.6:c.1408G>T(p.Glu470Ter),先证者2携带EYA1基因的无义变异:NM_000503.6:c.889C>T(p.Arg297Ter),根据美国医学遗传学和基因组学学会(ACMG)指南上述变异均评级为致病变异。c.1408G>T基因变异既往未见报道,c.889C>T基因变异为已知变异。结论 EYA1基因的c.1408G>T(p.Glu470Ter)变异和c.889C>T(p.Arg297Ter)变异是本研究两个家系鳃耳综合征的致病原因。
关键词
鳃耳(肾)综合征;EYA1基因;基因变异
基金项目(Foundation):
河南省高等院校重点科研项目(22A320026);; 河南省医学科技攻关计划省部共建重点项目(SBGJ202302061)
作者
何万里;许红恩;刘梦丽;张腾;孙淑萍;卢伟
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