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Published on: July 14, 2016
A new locus for dominant drusen and macular degeneration maps to chromosome 6q14
M Kniazeva1, E I Traboulsi, Z Yu
1MCDB Department and Howard Hughes Medical Institute, University of Colorado at Boulder, Colorado, USA.
Purpose:
To report the localization of a gene causing drusen and macular degeneration in a previously undescribed North American family.
Methods:
Genetic mapping studies were performed using linkage analysis in a single family with drusen and atrophic macular degeneration.
Results:
The clinical manifestations in this family ranged from fine macular drusen in asymptomatic middle-aged individuals to atrophic macular lesions in two children and two elderly patients. We mapped the gene to chromosome 6q14 between markers D6S2258 and D6S1644.
Conclusions:
In a family with autosomal dominant drusen and atrophic macular degeneration, the gene maps to a 3.2-cM region on chromosome 6q14. This locus appears to be distinct from, but adjacent to, the loci for cone-rod dystrophy 7 (CORD7) and North Carolina macular dystrophy (MCDR1). Future identification of the gene responsible for the disease in this family will provide a better understanding of macular degeneration.
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