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[Hereditary deafness in Turkey. Initial results]
1Universitäts-HNO-Klinik, Ege-Universität, Medizinische Hochschule, Bornova-Izmir, Türkei.
HNO
|November 17, 1998
Summary
Researchers identified Turkish families with hereditary hearing loss, finding most non-syndromal cases followed autosomal recessive inheritance. This study aids in pinpointing genes responsible for genetic deafness.
Area of Science:
- Genetics
- Otolaryngology
- Medical Genetics
Context:
- Hereditary hearing loss presents significant genetic heterogeneity, complicating gene identification.
- Genetic isolates are crucial for mapping hearing loss loci due to reduced allelic variation.
- Previous studies have not comprehensively analyzed Turkish populations for hereditary deafness genetics.
Purpose:
- To identify Turkish families affected by hereditary hearing loss.
- To isolate potential disease genes responsible for hearing impairment in these families.
- To categorize identified families based on inheritance patterns.
Summary:
- Medical records of 3800 children with suspected hearing impairments were reviewed (1975-1994).
- 16 families with syndromal deafness and 55 with non-syndromal hereditary hearing loss were identified.
- Autosomal recessive inheritance (66%) predominated in non-syndromal families, followed by autosomal dominant (29%) and X-linked (5%).
- A male predominance and a 22% consanguinity rate were observed.
Impact:
- This research contributes to understanding the genetic basis of hearing loss in a specific population.
- Findings facilitate the localization of genes associated with hereditary deafness.
- The study provides a foundation for future genetic counseling and potential therapeutic strategies for hearing loss.