#609533
Table of Contents
A number sign (#) is used with this entry because autosomal recessive deafness-23 (DFNB23) is caused by homozygous mutation in the gene encoding protocadherin-15 (PCDH15; 605514) on chromosome 10q21.
Mutation in the PCDH15 gene can also cause Usher syndrome type IF (602083).
Ahmed et al. (2003) reported 3 families with isolated deafness. Two of the families had no history of nyctalopia, and the funduscopy and electroretinograms were normal in 2 older affected individuals from each family (age range, 13-44 years). Vestibular responses were intact in affected individuals.
Doucette et al. (2009) reported a consanguineous family from Newfoundland, Canada, with isolated hearing loss that was neurosensory, prelingual, and severe to profound. Ancestors of the family had emigrated from England in the early 1800s to settle a fishing 'outport' on Newfoundland's southern coast. Detailed examination of 2 homozygous carriers in middle age showed no evidence of Usher syndrome and no vestibular abnormalities.
In affected members of 2 unrelated families with isolated deafness, Ahmed et al. (2003) identified 2 different homozygous mutations in the PCDH15 gene (605514.0006 and 605514.0007, respectively).
In affected members of a consanguineous family from Newfoundland with isolated deafness, Doucette et al. (2009) identified a homozygous mutation in the PCDH15 gene (V528D; 605514.0010).
Ahmed, Z. M., Riazuddin, S., Ahmad, J., Bernstein, S. L., Guo, Y., Sabar, M. F., Sieving, P., Riazuddin, S., Griffith, A. J., Friedman, T. B., Belyantseva, I. A., Wilcox, E. R. PCDH15 is expressed in the neurosensory epithelium of the eye and ear and mutant alleles are responsible for both USH1F and DFNB23. Hum. Molec. Genet. 12: 3215-3223, 2003. [PubMed: 14570705, related citations] [Full Text]
Doucette, L., Merner, N. D., Cooke, S., Ives, E., Galutira, D., Walsh, V., Walsh, T., MacLaren, L., Cater, T., Fernandez, B., Green, J. S., Wilcox, E. R., Shotland, L. I., Li, X. C., Lee, M., King, M.-C., Young, T.-L. Profound, prelingual nonsyndromic deafness maps to chromosome 10q21 and is caused by a novel missense mutation in the Usher syndrome type IF gene PCDH15. Europ. J. Hum. Genet. 17: 554-564, 2009. Note: Erratum: Europ. J. Hum. Genet. 17: 1363 only, 2009. [PubMed: 19107147, images, related citations] [Full Text]
ORPHA: 90636; DO: 0110481;
Location | Phenotype |
Phenotype MIM number |
Inheritance |
Phenotype mapping key |
Gene/Locus |
Gene/Locus MIM number |
---|---|---|---|---|---|---|
10q21.1 | Deafness, autosomal recessive 23 | 609533 | Autosomal recessive | 3 | PCDH15 | 605514 |
A number sign (#) is used with this entry because autosomal recessive deafness-23 (DFNB23) is caused by homozygous mutation in the gene encoding protocadherin-15 (PCDH15; 605514) on chromosome 10q21.
Mutation in the PCDH15 gene can also cause Usher syndrome type IF (602083).
Ahmed et al. (2003) reported 3 families with isolated deafness. Two of the families had no history of nyctalopia, and the funduscopy and electroretinograms were normal in 2 older affected individuals from each family (age range, 13-44 years). Vestibular responses were intact in affected individuals.
Doucette et al. (2009) reported a consanguineous family from Newfoundland, Canada, with isolated hearing loss that was neurosensory, prelingual, and severe to profound. Ancestors of the family had emigrated from England in the early 1800s to settle a fishing 'outport' on Newfoundland's southern coast. Detailed examination of 2 homozygous carriers in middle age showed no evidence of Usher syndrome and no vestibular abnormalities.
In affected members of 2 unrelated families with isolated deafness, Ahmed et al. (2003) identified 2 different homozygous mutations in the PCDH15 gene (605514.0006 and 605514.0007, respectively).
In affected members of a consanguineous family from Newfoundland with isolated deafness, Doucette et al. (2009) identified a homozygous mutation in the PCDH15 gene (V528D; 605514.0010).
Ahmed, Z. M., Riazuddin, S., Ahmad, J., Bernstein, S. L., Guo, Y., Sabar, M. F., Sieving, P., Riazuddin, S., Griffith, A. J., Friedman, T. B., Belyantseva, I. A., Wilcox, E. R. PCDH15 is expressed in the neurosensory epithelium of the eye and ear and mutant alleles are responsible for both USH1F and DFNB23. Hum. Molec. Genet. 12: 3215-3223, 2003. [PubMed: 14570705] [Full Text: https://doi.org/10.1093/hmg/ddg358]
Doucette, L., Merner, N. D., Cooke, S., Ives, E., Galutira, D., Walsh, V., Walsh, T., MacLaren, L., Cater, T., Fernandez, B., Green, J. S., Wilcox, E. R., Shotland, L. I., Li, X. C., Lee, M., King, M.-C., Young, T.-L. Profound, prelingual nonsyndromic deafness maps to chromosome 10q21 and is caused by a novel missense mutation in the Usher syndrome type IF gene PCDH15. Europ. J. Hum. Genet. 17: 554-564, 2009. Note: Erratum: Europ. J. Hum. Genet. 17: 1363 only, 2009. [PubMed: 19107147] [Full Text: https://doi.org/10.1038/ejhg.2008.231]
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