一个Pendred综合征家系的临床及SLC26A4基因检测分析

Clinical and Molecular Diagnosis in a Big Chinese Family with Pendred Syndrome

陶峥;柴永川;李磊;李晓华;杨涛;吴皓;

1:上海交通大学医学院附属上海儿童医学中心耳鼻咽喉科

2:上海交通大学医学院附属新华医院耳鼻咽喉-头颈外科

3:上海交通大学耳科学研究所

摘要
目的探讨Pendred综合征的临床表现及SLC26A4基因检测特点。方法对一个多人患病的Pen-dred综合征家系进行详尽的临床表型分析,并对其中4例耳聋患者进行SLC26A4基因全编码序列及侧翼序列的检测。结果该家系共三代15人,其中6人(40.0%)为耳聋患者,6例均为语前感音神经性聋,2例(Ⅰ-3和Ⅱ-7)表现为言语障碍,5例(Ⅱ-4、Ⅱ-5、Ⅱ-7、Ⅲ-1、Ⅲ-2)伴单纯甲状腺肿大、3例(Ⅱ-5、Ⅲ-1、Ⅲ-2)伴前庭水管扩大。Ⅱ-4、Ⅱ-5、Ⅲ-1和Ⅲ-2这4例耳聋患者中共发现SLC26A4基因四种不同的突变,患病成员中先证者(Ⅲ-1)及其父亲(Ⅱ-4)、母亲(Ⅱ-5)和妹妹(Ⅲ-2)分别具有p.Q514P和p.H723R、p.N392Y和p.H723R、c.1548insC和p.Q514P、p.N392Y和c.1548ins C双等位基因突变。结论该家系先证者及其父母、妹妹分别由SLC26A4基因不同复合杂合突变导致Pendred综合征;在发现的四种突变中,p.Q514P是既往研究未报道的新发突变。
关键词
Pendred综合征;SLC26A4基因;听力损失;基因突变
基金项目(Foundation):
国家自然科学基金(30971596;81170924);; 卫生部公益性行业科研专项经费项目(201202005);; 上海市教育委员会和上海市教育发展基金会“曙光计划”(09SG19);; 上海市浦江人才计划(11PJ1407000);; 上海高校特聘教授(东方学者)岗位计划资助
作者
陶峥;柴永川;李磊;李晓华;杨涛;吴皓;
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