Gene mapping of Usher syndrome type IIa

Localization of the gene to a 2.1-cM segment on chromosome 1q41

W. J. Kimberling, Michael Weston, C. Moller, A. Van Aarem, C. W R J Cremers, J. Sumegi, P. S. Ing, C. Connolly, A. Martini, M. Milani, M. L. Tamayo, J. Bernal, J. Greenberg, C. Ayuso

Research output: Contribution to journalArticle

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Abstract

Usher syndrome type II is associated with hearing loss and retinitis pigmentosa but not with any vestibular problems. It is known to be genetically heterogeneous, and one locus (termed USH2A) has been linked to chromosome 1q41. In an effort to refine the localization of USH2A, the genetic map of the region between and adjacent to the marker loci previously recognized as flanking USH2A (D1S70 and PPOL) is updated. Analysis of marker data on 68 Usher II families places the USH2A gene into a 2.1-cM region between the markers D1S237 and D1S229. The gene for transforming growth factor β2 (TGFB2) and the gene for the homeodomain box (HLX1) are both eliminated as candidates for USH2A, by virtue of their localization outside these flanking markers. The earlier finding of genetic heterogeneity was confirmed in six new families, and the proportion of unlinked Usher II families is estimated at 12.5%. The placement of the USH2A gene into this region will aid in the physical mapping and isolation of the gene itself.

Original languageEnglish
Pages (from-to)216-223
Number of pages8
JournalAmerican Journal of Human Genetics
Volume56
Issue number1
StatePublished - 1995

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Usher Syndromes
Chromosome Mapping
Chromosomes
Genes
Retinitis Pigmentosa
Genetic Heterogeneity
Transforming Growth Factors
Hearing Loss

All Science Journal Classification (ASJC) codes

  • Genetics

Cite this

Kimberling, W. J., Weston, M., Moller, C., Van Aarem, A., Cremers, C. W. R. J., Sumegi, J., ... Ayuso, C. (1995). Gene mapping of Usher syndrome type IIa: Localization of the gene to a 2.1-cM segment on chromosome 1q41. American Journal of Human Genetics, 56(1), 216-223.

Gene mapping of Usher syndrome type IIa : Localization of the gene to a 2.1-cM segment on chromosome 1q41. / Kimberling, W. J.; Weston, Michael; Moller, C.; Van Aarem, A.; Cremers, C. W R J; Sumegi, J.; Ing, P. S.; Connolly, C.; Martini, A.; Milani, M.; Tamayo, M. L.; Bernal, J.; Greenberg, J.; Ayuso, C.

In: American Journal of Human Genetics, Vol. 56, No. 1, 1995, p. 216-223.

Research output: Contribution to journalArticle

Kimberling, WJ, Weston, M, Moller, C, Van Aarem, A, Cremers, CWRJ, Sumegi, J, Ing, PS, Connolly, C, Martini, A, Milani, M, Tamayo, ML, Bernal, J, Greenberg, J & Ayuso, C 1995, 'Gene mapping of Usher syndrome type IIa: Localization of the gene to a 2.1-cM segment on chromosome 1q41', American Journal of Human Genetics, vol. 56, no. 1, pp. 216-223.
Kimberling, W. J. ; Weston, Michael ; Moller, C. ; Van Aarem, A. ; Cremers, C. W R J ; Sumegi, J. ; Ing, P. S. ; Connolly, C. ; Martini, A. ; Milani, M. ; Tamayo, M. L. ; Bernal, J. ; Greenberg, J. ; Ayuso, C. / Gene mapping of Usher syndrome type IIa : Localization of the gene to a 2.1-cM segment on chromosome 1q41. In: American Journal of Human Genetics. 1995 ; Vol. 56, No. 1. pp. 216-223.
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