Sequence variants in genes causing nonsyndromic hearing loss in a Pakistani cohort.

Mol Genet Genomic Med

McKusick-Zhang Center for Genetic Medicine, Institute of Basic Medical Sciences, School of Basic Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.

Published: September 2019

Background: Hearing loss or hearing impairment is a clinically and genetically heterogeneous disorder. More than 117 genes were discovered to date in hereditary, nonsyndromic hearing loss (NSHL). Identifying novel gene variants and their frequency in specific populations is valuable for public health and potentially for genetic screening of NSHL.

Aims: To identify the gene variants underlying NSHL in a Pakistani cohort.

Methods And Results: A cohort of 40 school-aged children with NSHL was initially screened for variants in GJB2, the gene with the highest incidence of variants in other populations with NSHL. We found known homozygous as well as compound heterozygous GJB variants in 15 individuals. Next, we used targeted next generation sequencing (TNGS) for the remaining 25 individuals and identified 20 different variants in 14 genes (SLC26A4, KCNQ4, MYO7A, MYO15A, TMPRSS3, ESPN, TMC1, GIPC3, LHFPL5, WFS1, DFNB59, GRXCR1, ESRRB, and LRTOMT).

Conclusions: We described common and novel variants in 15 genes in a Pakistani cohort of NSHL.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6732339PMC
http://dx.doi.org/10.1002/mgg3.917DOI Listing

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