An effective combination of whole-exome sequencing and runs of homozygosity for the diagnosis of primary ciliary dyskinesia in consanguineous families.

An effective combination of whole-exome sequencing and runs of homozygosity for the diagnosis of primary ciliary dyskinesia in consanguineous families.
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全外显子组测序和纯合性运行的有效组合用于诊断近亲家庭中原发性纤毛运动障碍。

DOI:
10.1038/s41598-017-08510-z
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发表时间:
2017-08-11
期刊:
影响因子:
4.6
通讯作者:
Yang YF
Yang YF
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Guo T;Tan ZP;Chen HM;Zheng DY;Liu L;Huang XG;Chen P;Luo H;Yang YF

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原发性睫状肌运动障碍(PCD)的临床特征为新生儿呼吸窘迫、慢性鼻窦炎、支气管扩张症和不孕症,50%的患者伴有内翻。PCD是睫毛功能相关蛋白编码基因突变的结果,主要以常染色体隐性遗传方式遗传。由于其高度的临床和遗传异质性,PCD的诊断通常是一项具有挑战性的任务。在本研究中,我们尝试使用全外显子组测序(WES)和纯合子序列(ROH)相结合的方法来鉴定四个临床PCD血缘关系家系的遗传缺陷。我们成功地鉴定了三个新近发现的PCD基因:DYX1C1、CCNO和ARMC4,以及一个功能齐全的PCD基因DNAI1。我们的研究提供了令人信服的证据,即WES结合ROH分析是一种有效的诊断工具,可以在血缘关系家庭中识别PCD的遗传原因。此外,我们的工作扩大了PCD的基因突变谱,并为更好地服务于PCD家庭的咨询提供了额外的工具。
Primary ciliary dyskinesia (PCD) is clinically characterized by neonatal respiratory distress, chronic sinusitis, bronchiectasis and infertility, and situs inversus in 50% of the patients. PCD is a result of mutations in genes encoding proteins involved in ciliary function, and is primarily inherited in an autosomal recessive fashion. Diagnosis of PCD is often a challenging task due to its high clinical and genetic heterogeneities. In the present study, we attempted to use whole-exome sequencing (WES) combined with runs of homozygosity (ROH) approaches to identify the genetic defects in four Chinese consanguineous families with clinical PCD. We successfully identified three recently acknowledged PCD genes:DYX1C1,CCNOandARMC4, and one well-characterized PCD gene,DNAI1. Our study provides compelling evidence that WES in combination with ROH analysis is an efficient diagnostic tool for identifying genetic causes of PCD in consanguineous families. Furthermore, our work expands the genetic mutation spectrum in PCD, and provides the additional tools to better serve the counseling of the families with PCD.
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