Journal
PLOS ONE
Volume 10, Issue 5, Pages -Publisher
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0126602
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Funding
- East Raising Sun Talents Program of Shanghai East Hospital, Tongji University [2013DFYY-2]
- Foundation for Development of Science and Technology, Pudong new district, Shanghai [2013 PKJ2013-Y18]
- National Basic Research Program of China [2011CB504502]
- Basic Key Program of Shanghai Scientific and Technology Committee [14DJ1400103]
- Program of Shanghai Municipal Commission of Health and Family Planning [2013ZYJB0015]
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Autosomal dominant non-syndromic hearing loss is highly heterogeneous, and eyes absent 4 (EYA4) is a disease-causing gene. Most EYA4 mutations founded in the Eya-homologous region, however, no deafness causative missense mutation in variable region of EYA4 have previously been found. In this study, we identified a pathogenic missense mutation located in the variable region of the EYA4 gene for the first time in a four-generation Chinese family with 57 members. Whole-exome sequencing (WES) was performed on samples from one unaffected and two affected individuals to systematically search for deafness susceptibility genes, and the candidate mutations and the co-segregation of the phenotype were verified by polymerase chain reaction amplification and by Sanger sequencing in all of the family members. Then, we identified a novel EYA4 mutation in exon 8, c.511G>C; p.G171R, which segregated with postlingual and progressive autosomal dominant sensorineural hearing loss (SNHL). This report is the first to describe a missense mutation in the variable region domain of the EYA4 gene, which is not highly conserved in many species, indicating that the potential unconserved role of 171G>R in human EYA4 function is extremely important.
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