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148 - Genetic sensorineural hearing loss
Book chapter

148 - Genetic sensorineural hearing loss

Miles J. Klimara, Ryan K. Thorpe and Richard J.H. Smith
Cummings Otolaryngology, pp.2294-2310.e5
Elsevier Health, Eighth Edition
2026
DOI: 10.1016/B978-0-443-11984-2.00157-2

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Abstract

Hearing loss is the most common sensory impairment in humans. At birth, it impacts 1 in 500 births, and by the age of 80 years, 50% of individuals are affected. In developed countries, the majority (70%) of congenital sensorineural hearing loss results from a genetic cause. To date, more than 100 genes have been implicated in heritable nonsyndromic sensorineural hearing loss that can be autosomal recessive, autosomal dominant, X-linked, or mitochondrial. More than 800 syndromic forms of genetic hearing loss are known, of which many mimic nonsyndromic hearing loss. The benefits of establishing a genetic diagnosis are threefold: (1) to rule out syndromic hearing loss; (2) to obtain prognostic information that may guide subsequent evaluation, counseling, and management; and (3) to identify diagnosis-specific treatments that would be of benefit. With the advent of massively parallel sequencing techniques, genetic testing has become the first-line test to order in the evaluation of sensorineural hearing loss.
Deafness Genetics Genomics GJB2 hearing impairment hearing loss

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