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Journal of Molecular Medicine

, Volume 82, Issue 11, pp 775–780 | Cite as

DFNA54, a third locus for low-frequency hearing loss

  • Nicolas Gürtler
  • Yuil Kim
  • Anand Mhatre
  • Christoph Schlegel
  • Alfons Mathis
  • Anil K. LalwaniEmail author
Original Article

Abstract

Nonsyndromic hereditary hearing impairment (NSHHI) is a highly heterogeneous disorder with more than 90 loci mapped, of which nearly one-half of the responsible genes are identified. In dominant NSSHI hearing loss is typically biased towards the high frequencies while low-frequency hearing loss is unusual. Only two NSHHI loci, DFNA1 and DFNA6/14/38, are associated with predominantly low- frequency loss. We mapped the loci harboring the gene responsible for autosomal dominant low-frequency hearing loss in a multigenerational family. The pedigree of a Swiss family with low-frequency hearing loss was established. Using genomic DNA, DFNA1 and DFNA6/14/38 were excluded by linkage analysis or by direct sequencing of the responsible gene. Genome-wide linkage analysis was performed using commercially available microsatellite markers. Two-point linkage analysis demonstrated linkage to chromosome 5q31, the locus for DFNA15, with a lod score of 6.32 at recombination fraction θ=0 for marker D5S436. Critical recombinations were seen at markers D5S1972 and D5S410. Sequencing of the corresponding gene POU4F3 yielded no pathogenic mutation segregating with the affected members. In addition to Wolfram syndrome gene 1 (DFNA6/14/38) and diaphanous (DFNA1) there is evidence for a third gene involved in low-frequency hearing loss located at DFNA15. Because of the differences in auditory phenotype and the absence of pathogenic mutation in the coding region of POU4F3 it is likely that there is a second gene in 5q31, designated DFNA54, associated with NSHHI.

Keywords

Nonsyndromic hereditary hearing impairment Low-frequency hearing loss DFNA15 DFNA54 

Abbreviations

LOH

Loss of heterozygosity

NSHHI

Nonsyndromic hereditary hearing impairment

SNP

Single-nucleotide polymorphism

Notes

Acknowledgements

We thank participating family members for their cooperation and the Molecular Genetics Facility at the University Hospital of Basel for technical support. This study was supported in part by grants from the Swiss National Science Foundation, the Novartis Foundation, and “Freiwillige Akademische Gesellschaft,” the latter both from Basel, Switzerland.

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • Nicolas Gürtler
    • 1
    • 2
  • Yuil Kim
    • 1
  • Anand Mhatre
    • 1
    • 3
  • Christoph Schlegel
    • 4
  • Alfons Mathis
    • 4
  • Anil K. Lalwani
    • 1
    • 3
    Email author
  1. 1.Laboratory of Molecular Otology, Epstein Laboratories, Department of Otolaryngology-Head and Neck SurgeryUniversity of California San FranciscoSan FranciscoUSA
  2. 2.Hals-Nasen-Ohren-KlinikKantonsspitalAarauSwitzerland
  3. 3.Department of OtolaryngologyNYU School of MedicineNew YorkUSA
  4. 4.Hals-Nasen-Ohren-KlinikKantonsspitalLucerneSwitzerland

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