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Drug Used by UBC-VCH Scientists to Repair Rare Birth Defect

by Kathy Jones on December 22, 2013 at 4:26 PM
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 Drug Used by UBC-VCH Scientists to Repair Rare Birth Defect

A potential cure for a rare eye disease has been developed by University of British Columbia and Vancouver Coastal Health scientists. They have shown for the first time that a drug can repair a birth defect.

They formulated the drug Ataluren into eye drops, and found that it consistently restored normal vision in mice who had aniridia (ANN-uh-ridee-uh), a condition that severely limits the vision of about 5,000 people in North America. A small clinical trial with children and teens is expected to begin next year in Vancouver, the U.S. and the U.K.

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Aniridia is caused by the presence of a "nonsense mutation" - an extra "stop sign" on the gene that interrupts production of a protein crucial for eye development. Aniridia patients don't have an iris (the coloured ring around the pupil), and suffer many other eye abnormalities.

Ataluren is believed to have the power to override the extra stop sign, thus allowing the protein to be made. The UBC-VCH scientists initially thought the drug would work only in utero - giving it to a pregnant mother to prevent aniridia from ever arising in her fetus. But then they gave their specially formulated Ataluren eye drops, which they call START, to two-week-old mice with aniridia, and found that it actually reversed the damage they had been born with.



Source: Eurekalert
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