Title |
A Novel TECTA Mutation in a Dutch DFNA8/12 Family Confirms Genotype–Phenotype Correlation
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Published in |
Journal of the Association for Research in Otolaryngology, April 2006
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DOI | 10.1007/s10162-006-0033-z |
Pubmed ID | |
Authors |
Rutger F. Plantinga, Arjan P. M. de Brouwer, Patrick L. M. Huygen, Henricus P. M. Kunst, Hannie Kremer, Cor W. R. J. Cremers |
Abstract |
A novel TECTA mutation, p.R1890C, was found in a Dutch family with nonsyndromic autosomal dominant sensorineural hearing impairment. In early life, presumably congenital, hearing impairment occurred in the midfrequency range, amounting to about 40 dB at 1 kHz. Speech recognition was good with all phoneme recognition scores exceeding 90%. An intact horizontal vestibuloocular reflex was found in four tested patients. The missense mutation is located in the zona pellucida (ZP) domain of alpha-tectorin. Mutations affecting the ZP domain of alpha-tectorin are significantly associated with midfrequency hearing impairment. Substitutions affecting other amino acid residues than cysteines show a significant association with hearing impairment without progression. Indeed, in the present family progression seemed to be absent. In addition, the presently identified mutation affecting the ZP domain resulted in a substantially lesser degree of hearing impairment than was previously reported for DFNA8/12 traits with mutations affecting the ZP domain of alpha-tectorin. |
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Geographical breakdown
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Demographic breakdown
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Neuroscience | 1 | 4% |
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