High frequency of autosomal-recessive DFNB59 hearing loss in an isolated Arab population in Israel

G. Borck, L. Rainshtein, S. Hellman-Aharony, Ae Volk, K. Friedrich, E. Taub, N. Magal, M. Kanaan, C. Kubisch, M. Shohat, L. Basel-Vanagaite*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Autosomal-recessive non-syndromic hearing impairment (DFNB) is usually of prelingual onset with a moderate to profound degree of hearing loss. More than 70 DFNB loci have been mapped and ∼40 causative genes have been identified. Non-syndromic hearing impairment caused by mutations of DFNB59 (encoding pejvakin) has been described in a couple of families in which affected individuals presented with either auditory neuropathy or hearing loss of cochlear origin. We have identified and clinically evaluated three consanguineous families of Israeli Arab origin with prelingual non-syndromic hearing impairment and absent otoacoustic emissions in a total of eight affected individuals. All the families originate from the same village and bear the same family name. We have identified a c.406C>T (p.R136X) nonsense mutation in the DFNB59 gene in affected individuals from these families. Among the inhabitants of the village, we found an exceptionally high carrier frequency of ∼1 in 12 individuals (7/85; 8.2%). The high prevalence of hearing impairment can be explained by a founder effect and the high consanguinity rate among the inhabitants of this village.

Original languageEnglish
Pages (from-to)271-276
Number of pages6
JournalClinical Genetics
Volume82
Issue number3
DOIs
StatePublished - Sep 2012

Keywords

  • Carriers
  • Consanguinity
  • Deafness
  • Hearing loss

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