Human Molecular Genetics, Vol 6, 597-600, Copyright © 1997 by Oxford University Press
RE Kelsell, K Evans, CY Gregory, AT Moore, AC Bird and DM Hunt
We have performed genetic linkage analysis on a four generation British
family with cone-rod dystrophy. Significant linkage to the disease gene was
obtained with eight marker loci situated on chromosome 17p12-p13. A maximum
two-point lod score of 5.93 with no recombination was obtained with marker
locus D17S1844. Critical recombinants identified with flanking marker loci
placed the disease gene between D17S796/D17S938 and D17S954, an interval
estimated to be 8 cM in size. This new localisation for autosomal dominant
cone-rod dystrophy (CORD6) overlaps with regions attributed previously to
Leber's congenital amaurosis, central areolar choroidal dystrophy and
dominant cone dystrophy. Given their differences in phenotype, the most
plausible explanation would be that these different retinal disorders are
caused by mutations in different genes mapping close together within the
genome.
ARTICLES
Localisation of a gene for dominant cone-rod dystrophy (CORD6) to chromosome 17p
Department of Molecular Genetics, Institute of Ophthalmology, University College London, UK.
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