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Linkage analysis in an autosomal dominant 'zonular nuclear pulverulent' congenital cataract, mapped to chromosome 13q11-13

Watts, Patrick, Rees, Mark I., Clarke, Angus John, Beck, Lyn, Lane, Carol M., Owen, Michael John and Gray, Jonathon 2000. Linkage analysis in an autosomal dominant 'zonular nuclear pulverulent' congenital cataract, mapped to chromosome 13q11-13. Eye 14 (2) , pp. 172-175. 10.1038/eye.2000.48

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Purpose To determine by linkage analysis the chromosomal locus responsible for autosomal dominant congenital cataract (ADCC) in a four-generation Welsh pedigree. Methods The family pedigree was traced through two members of the family attending the hospital for treatment of their cataracts. Twenty-five members of the family were examined ophthalmologically and blood was collected with consent for genetic linkage analysis. Results Fifteen members of this family were known to have bilateral congenital cataracts, of whom 11 had a cataract extraction prior to examination. The youngest member of the pedigree was 5 years old and the oldest was 78 years old. Four children, unoperated at the time of this study, had a phenotypically identical morphology of their zonular pulverulent congenital cataracts. The known loci for congenital cataract were excluded. Significant lod scores for markers in the 13ql1-13 region were detected with a Zmax of 3.59 D13S1236 (8 = 0.00). Conclusions We report linkage of an ADCC of the zonular pulverulent type to chromosome 13ql1-13 in a four-generation family.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG)
Neuroscience and Mental Health Research Institute (NMHRI)
Subjects: R Medicine > R Medicine (General)
Uncontrolled Keywords: Autosomal; cataract; dominant; linkage; pulverulent; zonular.
Publisher: Nature Publishing Group
ISSN: 0950-222X
Last Modified: 31 Jan 2020 07:36

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