BOSTON, April 23 /PRNewswire-USNewswire/ -- Researchers at Tufts Medical Center have created a formula for predicting how likely it is that individuals with certain genetic profiles and lifestyle behaviors will develop advanced Age-related Macular Degeneration (AMD), a potentially blinding condition that currently affects an estimated two million older Americans and is increasing dramatically as the population ages.
The study, led by Johanna M. Seddon, MD, ScM, Professor of Ophthalmology at
Their research also shows that although AMD has a strong genetic component, healthy behaviors can modify your genetic susceptibility. For example, among individuals with one genotype, the homozygous C3 risk genotype, the likelihood of progression to the advanced form of AMD increased from about three-fold for nonsmokers to nearly 10-fold for smokers.
"Our algorithm could help with the selection of study participants for treatment trials and could one day enable doctors to choose the most efficacious treatment for individual patients," Dr. Seddon said. "It also gives any older person concerned about AMD, or any patient with early stages or a family history of AMD, even more incentive to avoid risk factors such as smoking and excessive weight."
The study included 1,446 individuals from the Age-Related Eye Disease Study who had 6.3 years of follow-up, of which 279 progressed to the advanced stages of AMD.
|SOURCE Tufts Medical Center|
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