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Related Experiment Videos

[Genetic aspects of deafness]

B Dallapiccola1, R Mingarelli, M Gennarelli

  • 1Cattedra di Genetica Medica e Umana, Università Tor Vergata di Roma.

Acta Otorhinolaryngologica Italica : Organo Ufficiale Della Societa Italiana Di Otorinolaringologia E Chirurgia Cervico-Facciale
|April 1, 1996
PubMed
Summary

Genetic factors cause congenital sensorineural hearing impairment in half of affected children. Research identifies numerous genetic loci, but gene cloning and function remain challenging.

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Area of Science:

  • Genetics
  • Otolaryngology
  • Pediatrics

Context:

  • Congenital sensorineural hearing impairment (CSHI) affects 1-2 in 1000 children.
  • Genetic factors underlie at least 50% of CSHI cases.
  • Non-syndromic CSHI constitutes over 70% of cases, with autosomal recessive inheritance predominating.

Purpose:

  • To review the genetic basis of congenital sensorineural hearing impairment.
  • To highlight the genetic heterogeneity and inheritance patterns of CSHI.
  • To underscore the challenges in identifying and characterizing causative genes.

Summary:

  • CSHI has a significant genetic component, with autosomal recessive, dominant, and X-linked forms identified.
  • Other genetic causes include chromosomal aneuploidies and mitochondrial DNA mutations.

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  • While numerous genetic loci for CSHI are known, gene cloning and functional studies are ongoing.

    • Impact:

    • Provides a comprehensive overview of the genetic landscape of CSHI.
    • Informs research efforts for gene discovery and diagnostic development.
    • Contributes to understanding the etiology of hearing loss in children.