Whole exome sequencing identifies a novel variant in an apoptosis-inducing factor gene associated with X-linked recessive hearing loss in a Chinese family.

ABSTRACT: We report on the genetic analysis of a Chinese family in which four male patients presented with postlingual progressive hearing loss, associated with distal muscle wasting and unsteady ataxic gait. Using whole exome sequencing, we identified a new pathogenic variant (c.1463C>T, p.Pro488Leu) in the AIFM1 gene, which encodes the apoptosis-inducing factor mitochondrion-associated 1 precursor. AIFM1 is involved in the mitochondrial respiratory chain and cellular caspase-independent apoptosis pathway and has been reported to cause multiple phenotypes including hearing loss. The p.Pro488Leu missense variant segregated with symptoms in the pedigree. It was not found in the dbSNP database, databases of genomes and SNPs in the Chinese population, in 74 patients with sporadic hearing loss, or in 10

SUBMITTER: Wang Q 

PROVIDER: S-EPMC6905455 | biostudies-literature | 2019 Jul-Sep

REPOSITORIES: biostudies-literature