Human Molecular Genetics, Vol 7, 285-290, Copyright © 1998 by Oxford University Press
MS Tomek, MR Brown, SR Mani, A Ramesh, CR Srisailapathy, P Coucke, RI Zbar, AM Bell, WT McGuirt, K Fukushima, PJ Willems, G Van Camp and RJ Smith
Among white adults otosclerosis is the single most common cause of hearing
impairment. Although the genetics of this disease are controversial, the
majority of studies indicate autosomal dominant inheritance with reduced
penetrance. We studied a large multi- generational family in which
otosclerosis has been inherited in an autosomal dominant pattern. Five of16
affected persons have surgically confirmed otosclerosis; the remaining nine
have a conductive hearing loss but have not undergone corrective surgery.
To locate the disease- causing gene we completed genetic linkage analysis
using short tandem repeat polymorphisms (STRPs) distributed over the entire
genome. Multipoint linkage analysis showed that only one genomic region, on
chromosome 15q, generated a lod score >2.0. Additional STRPs were typed
in this area, resulting in a lod score of 3.4. STRPs FES (centromeric) and
D15S657 (telomeric) flank the 14. 5 cM region that contains an otosclerosis
gene.
ARTICLES
Localization of a gene for otosclerosis to chromosome 15q25-q26
Molecular Otolaryngology Research Laboratories, Department of Otolaryngology, University of Iowa, 200 Hawkins Drive, Iowa City, IA 52242, USA.
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