%603010
Table of Contents
Cytogenetic location: 7q31 Genomic coordinates (GRCh38) : 7:107,800,001-127,500,000
Greinwald et al. (1998) briefly described 3 families (F18, F9, F61) with nonsyndromic hearing loss from the Tamil Nadu region of southeastern India. All affected individuals had profound (greater than than 110 dB hearing loss) prelingual-onset hearing impairment and used sign language for communication.
While attempting to refine the localization of the gene responsible for DFNB4 (600791) on 7q31, Greinwald et al. (1998) found a large family (F18) in Madras, India, with autosomal recessive nonsyndromic hearing loss, which by homozygosity mapping and linkage analysis appeared to map to 7q31 also, but to lie outside the region to which both DFNB4 and Pendred syndrome (274600) have been mapped. Because of the identical location and phenotype, this locus and that identified as DFNB14 (603678) may be the same.
Using 30 highly polymorphic markers and 8 SNPs, Guo et al. (2004) reanalyzed families F18 and F9 originally reported by Greinwald et al. (1998) and refined the mapping of DFNB17 to a 3.9-Mb region of 7q31 between markers D7S2453 and D7S525. Sequence analysis of 5 cochlear-expressed genes within this region (SLC26A4, 605646; SLC26A3, 126650; LAMB1, 150240; HBP1, 616714; and SYPL, 616665) did not reveal any sequence variants segregating with the disease phenotype.
Greinwald, J. H., Jr., Wayne, S., Chen, A. H., Scott, D. A., Zbar, R. I. S., Kraft, M. L., Prasad, S., Ramesh, A., Coucke, P., Srisailapathy, C. R. S., Lovett, M., Van Camp, G., Smith, R. J. H. Localization of a novel gene for nonsyndromic hearing loss (DFNB17) to chromosome region 7q31. Am. J. Med. Genet. 78: 107-113, 1998. [PubMed: 9674898, related citations]
Guo, Y., Pilipenko, V., Lim, L. H. Y., Dou, H., Johnson, L., Srisailapathy, C. R. S., Ramesh, A., Choo, D. I., Smith, R. J. H., Greinwald, J. H. Refining the DFNB17 interval in consanguineous Indian families. Molec. Biol. Rep. 31: 97-105, 2004. [PubMed: 15293785, related citations] [Full Text]
ORPHA: 90636; DO: 0110472;
Cytogenetic location: 7q31 Genomic coordinates (GRCh38) : 7:107,800,001-127,500,000
Location | Phenotype |
Phenotype MIM number |
Inheritance |
Phenotype mapping key |
---|---|---|---|---|
7q31 | Deafness, autosomal recessive 17 | 603010 | Autosomal recessive | 2 |
Greinwald et al. (1998) briefly described 3 families (F18, F9, F61) with nonsyndromic hearing loss from the Tamil Nadu region of southeastern India. All affected individuals had profound (greater than than 110 dB hearing loss) prelingual-onset hearing impairment and used sign language for communication.
While attempting to refine the localization of the gene responsible for DFNB4 (600791) on 7q31, Greinwald et al. (1998) found a large family (F18) in Madras, India, with autosomal recessive nonsyndromic hearing loss, which by homozygosity mapping and linkage analysis appeared to map to 7q31 also, but to lie outside the region to which both DFNB4 and Pendred syndrome (274600) have been mapped. Because of the identical location and phenotype, this locus and that identified as DFNB14 (603678) may be the same.
Using 30 highly polymorphic markers and 8 SNPs, Guo et al. (2004) reanalyzed families F18 and F9 originally reported by Greinwald et al. (1998) and refined the mapping of DFNB17 to a 3.9-Mb region of 7q31 between markers D7S2453 and D7S525. Sequence analysis of 5 cochlear-expressed genes within this region (SLC26A4, 605646; SLC26A3, 126650; LAMB1, 150240; HBP1, 616714; and SYPL, 616665) did not reveal any sequence variants segregating with the disease phenotype.
Greinwald, J. H., Jr., Wayne, S., Chen, A. H., Scott, D. A., Zbar, R. I. S., Kraft, M. L., Prasad, S., Ramesh, A., Coucke, P., Srisailapathy, C. R. S., Lovett, M., Van Camp, G., Smith, R. J. H. Localization of a novel gene for nonsyndromic hearing loss (DFNB17) to chromosome region 7q31. Am. J. Med. Genet. 78: 107-113, 1998. [PubMed: 9674898]
Guo, Y., Pilipenko, V., Lim, L. H. Y., Dou, H., Johnson, L., Srisailapathy, C. R. S., Ramesh, A., Choo, D. I., Smith, R. J. H., Greinwald, J. H. Refining the DFNB17 interval in consanguineous Indian families. Molec. Biol. Rep. 31: 97-105, 2004. [PubMed: 15293785] [Full Text: https://doi.org/10.1023/b:mole.0000031385.64105.61]
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