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Genes linked to macular degeneration

April 12, 2010 at 6:41 PM   |   Comments

BETHESDA, Md., April 12 (UPI) -- U.S. researchers have identified three genes associated with age-related macular degeneration.

Study leader Anand Swaroop of the National Eye Institute, part of the National Institutes of Health, and the University of Michigan in Ann Arbor said age-related macular degeneration is a leading cause of visual impairment and blindness in older adults.

Swaroop said the strongest age-related macular degeneration genetic association was found on chromosome 22, near a gene called metalloproteinase inhibitor 3 (TIMP3).

"Genome-wide association studies require large numbers of patients to discover significant genetic associations. The success of this effort was made possible by a community-wide scientific collaboration of sharing DNA samples and analyzing the genomes of more than 18,000 people," Dr. Paul A. Sieving, director of the National Eye Institute, said in a statement. "This study increases our understanding of DNA variations that predict individual risks of and provides clues for developing effective therapies."

The findings are published in the Proceedings of the National Academy of Sciences.

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