Linkage of congenital recessive deafness (gene DFNB10) to chromosome 21q22.3
- Tel Aviv Univ., Ramat-Aviv (Israel); and others
Deafness is a heterogeneous trait affecting {approximately}1/1,000 newborns. Genetic linkage studies have already implicated more than a dozen distinct loci causing deafness. We conducted a genome search for linkage in a large Palestinian family segregating an autosomal recessive form of nonsyndromic deafness. Our results indicate that in this family the defective gene, DFNB10, is located in a 12-cM region near the telomere of chromosome 21. This genetic distance corresponds to < 2.4 Mbp. Five marker loci typed from this region gave maximum LOD scores {ge}3. Homozygosity of marker alleles was evident for only the most telomeric marker, D21S1259, suggesting that DFNB10 is closest to this locus. To our knowledge, this is the first evidence, at this location, for a gene that is involved in the development or maintenance of hearing. As candidate genes at these and other deafness loci are isolated and characterized, their roles in hearing will be revealed and may lead to development of mechanisms to prevent deafness. 40 refs., 1 fig., 2 tabs.
- OSTI ID:
- 446942
- Journal Information:
- American Journal of Human Genetics, Vol. 58, Issue 6; Other Information: PBD: Jun 1996
- Country of Publication:
- United States
- Language:
- English
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