Screening of OTOF mutations in Iran: A novel mutation and review

Nejat Mahdieh, Atefeh Shirkavand, Bahareh Rabbani, Mustafa Tekin, Bahman Akbari, Mohammad Taghi Akbari, Sirous Zeinali

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


Objective: Mutations in OTOF have been reported to cause nonsyndromic hearing loss in different populations. The purpose of this study is screening of OTOF mutations in Iranian population. Methods: Thirty-eight consanguineous families affected with autosomal recessive nonsyndromic hearing loss (ARNSHL) and negative for GJB2 or GJB6 mutations were screened by autozygosity mapping and Sanger sequencing to find OTOF mutations. Results: A novel homozygous frameshift mutation (c.1981dupG) was found to cause hearing loss in one family and no other OTOF variants were detected in the remaining families. The affected individuals were homozygous forp. D661GfsX2 causing defect in long isoform of otoferlin. Conclusions: We conclude that OTOF mutations are not the major cause of ARNSHL in the Iranian population but still may play an important role in HL; therefore evaluation the OTOF gene is of concern.

Original languageEnglish (US)
Pages (from-to)1610-1615
Number of pages6
JournalInternational Journal of Pediatric Otorhinolaryngology
Issue number11
StatePublished - Nov 1 2012


  • Auditory neuropathy
  • Hearing loss
  • Iranian population
  • OTOF
  • Synaptopathy and deafness

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Pediatrics, Perinatology, and Child Health


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