Abstract
Sixteen Japanese nonsyndromic autosomal dominant sensorineural hearing loss (ADSNHL) families were investigated clinically as well as genetically. Most families showed postlingual hearing loss. Although the severity of their hearing loss varied, most patients showed mild-moderate sensorineural hearing loss of a progressive nature. Mutation analysis was performed for the MYO7A, KCNQ4, and GJB3 genes, which are known to be responsible for autosomal dominant sensorineural hearing loss. The present study reports that a mutation in KCNQ4, a member of a large family of potassium channel genes, was responsible for ADSNHL in one Japanese family.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adolescent
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Adult
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Aged
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Audiometry
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Base Sequence
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Child
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Child, Preschool
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Connexins / genetics
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DNA Mutational Analysis
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Dyneins
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Exons / genetics
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Female
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Genes, Dominant / genetics*
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Genotype
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Hearing Loss, Sensorineural / genetics*
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Hearing Loss, Sensorineural / physiopathology*
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Humans
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Japan
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KCNQ Potassium Channels
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Male
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Middle Aged
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Mutation
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Myosin VIIa
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Myosins / genetics
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Pedigree
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Phenotype
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Polymorphism, Genetic / genetics
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Potassium Channels / genetics*
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Potassium Channels, Voltage-Gated*
Substances
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Connexins
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KCNQ Potassium Channels
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KCNQ4 protein, human
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MYO7A protein, human
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Myosin VIIa
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Potassium Channels
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Potassium Channels, Voltage-Gated
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GJB3 protein, human
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Myosins
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Dyneins