Singapore: Scientists have isolated three new genes linked to Primary Angle Closure Glaucoma (PACG), a leading cause of blindness, which affects 15 million people worldwide, 80 percent of whom live in Asia.A team of scientists carried out a genome-wide association study (GWAS) of 1,854 PACG cases and 9,608 controls (who did not suffer from PACG) of over five sample collections in Asia. They performed validation experiments in another 1,917 PACG cases and 8,943 controls collected from a sample from around the world.This research carried out by scientists from the Singapore Eye Research Institute (SERI), with Genome Institute of Singapore (GIS), National University of Singapore (NUS), National University Hospital`s Department of Ophthalmology and Tan Tock Seng Hospital, is the first to study PACG genetics using a genome-wide perspective, the journal "Nature Genetics" reports.This finding confirms the long-standing suspicion of Aung Tin, principal project investigator, who is professor of ophthalmology at NUS. Tin has worked on PACG for over 10 years and believes, from clinical observations, that the disease is strongly hereditary, according to a statement of the Agency for Science, Technology and Research, Singapore.
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