Identification of SLC26A4 mutations p.L582LfsX4, p.I188T and p.E704K in a Chinese family with large vestibular aqueduct syndrome (LVAS).

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Identification of SLC26A4 mutations p.L582LfsX4, p.I188T and p.E704K in a Chinese family with large vestibular aqueduct syndrome (LVAS).

Int J Pediatr Otorhinolaryngol. 2016 Dec;91:1-5

Authors: Li Y, Zhu B, Su J, Yin Y, Yu F

Abstract
Large vestibular aqueduct syndrome (LVAS) is a type of hearing loss characterized by an autosomal recessive inheritance. LVAS has been shown to be associated with mutations in SLC26A4 gene. In the present study, we report the clinical, genetic and molecular characterization of a Chinese family with LVAS. By using the targeted sequence capture and next-generation sequencing, we identified heterozygous mutations of SLC26A4 p.I188T (c.563T > C), p.L582LfsX4 (c.1746 delG) and p.E704K (c.2110G > A) in the affected individual of this family, of which SLC26A4 p.E704K is a novel mutation associated with LVAS. By tracing the transmission and functional prediction of these mutations in the pedigree, the heterozygous mutations of p.I188T, p.L582LfsX4 and p.E704K in SLC26A4 gene were responsible for the LVAS of the affected individual. This is the first case of LVAS caused by these mutations.

PMID: 27863619 [PubMed - in process]

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