Genetics of hearing and deafness
Simon Angeli1, Xi Lin, Xue Zhong Liu
1Department of Otolaryngology, University of Miami, Miami, Florida 33136, USA.
Anatomical Record (Hoboken, N.J. : 2007)
|October 10, 2012
Summary
Genetic research is advancing the diagnosis and treatment of hearing loss (HL). Understanding the genetic basis of deafness, including monogenic disorders and mouse models, is crucial for medical professionals.
Area of Science:
- Genetics and Medicine
- Otolaryngology
- Molecular Biology
Background:
- Genetics is fundamental to understanding disease, including hearing loss (HL).
- Genes related to HL impact various ear functions like fluid homeostasis, ion channels, and synaptic transmission.
- Mouse models are vital for studying the pathogenesis of genetic deafness.
Purpose of the Study:
- To review genes and genetic disorders causing human deafness.
- To highlight the role of mouse models in understanding hearing loss pathogenesis.
- To emphasize the importance of medical genetics in diagnosing and managing hearing impairments.
Main Methods:
- Review of scientific literature on genetic hearing loss.
- Analysis of gene mutations and their inheritance patterns (autosomal dominant, recessive, X-linked, mitochondrial).
- Examination of identified genetic loci and genes associated with syndromic and nonsyndromic deafness.
Main Results:
- Significant progress has been made in identifying gene mutations causing deafness over the past two decades.
- Approximately 125 loci and 64 genes are known for nonsyndromic HL.
- Numerous loci exist for syndromic, X-linked, and mitochondrial DNA disorders causing deafness.
Conclusions:
- Genetic factors are a major cause of deafness, often presenting as monogenic disorders.
- Understanding genetic HL aids in diagnosis, counseling, treatment, and prevention strategies.
- Medical genetics knowledge is essential for clinicians managing patients with hearing loss.
