Logo image
Genetic heterogeneity of deafness phenotypes linked to DFNA4
Journal article   Peer reviewed

Genetic heterogeneity of deafness phenotypes linked to DFNA4

Tao Yang, Markus Pfister, Nikolaus Blin, Hans P Zenner, Carsten M Pusch and Richard J H Smith
American journal of medical genetics. Part A, Vol.139(1), pp.9-12
11/15/2005
DOI: 10.1002/ajmg.a.30989
PMID: 16222661

View Online

Abstract

Mutations in the heavy chain of the class II nonmuscle myosin, MYH14, cause autosomal dominant hearing loss in families linked to the DFNA4 locus. Consistent with this discovery, we identified an S120L mutation in MYH14 in a large German family segregating deafness that links to DFNA4. However, complete screening of the American family that originally defined the DFNA4 locus revealed no mutations in this gene. Furthermore, haplotyping of a single nucleotide polymorphism (SNP) 5' to MYH14 excludes this gene from the critical region in this family. Our results imply that mutations in another gene result in deafness at the DFNA4 locus. The newly defined candidate region encompasses a region of approximately 19 cM. Several candidate genes have been screened for disease-causing mutations.
Sequence Homology Amino Acid Sequence Carrier Proteins - genetics Deafness - genetics Pedigree Humans Molecular Sequence Data Myosin Heavy Chains - genetics Polymorphism, Single Nucleotide Mutation Myosin Type II - genetics Genetic Heterogeneity

Details

Metrics

Logo image