Last week, a paper in the Proceedings of the National Academy of Sciences (PNAS) reported that gene therapy to treat a form of blindness called Leber congenital amaurosis type 2 (LCA2) doesn’t stop degeneration of the rods and cones – the photoreceptor cells that provide vision. Gene therapy sends the genetic instructions for a protein called RPE65 into a layer of cells that supports the rods and cones – the retinal pigment epithelium, or RPE. The protein is essential for the eye to use vitamin A. And the gene therapy works, so far. Read More
Genetic Linkage
Another Bump in the Road for Gene Therapy?
February 4, 2013
I am astonished, once again, by the complexity and unpredictability of science.
Last week, a paper in the Proceedings of the National Academy of Sciences (PNAS) reported that gene therapy to treat a form of blindness called Leber congenital amaurosis type 2 (LCA2) doesn’t stop degeneration of the rods and cones – the photoreceptor cells that provide vision. Gene therapy sends the genetic instructions for a protein called RPE65 into a layer of cells that supports the rods and cones – the retinal pigment epithelium, or RPE. The protein is essential for the eye to use vitamin A. And the gene therapy works, so far. Read More
Last week, a paper in the Proceedings of the National Academy of Sciences (PNAS) reported that gene therapy to treat a form of blindness called Leber congenital amaurosis type 2 (LCA2) doesn’t stop degeneration of the rods and cones – the photoreceptor cells that provide vision. Gene therapy sends the genetic instructions for a protein called RPE65 into a layer of cells that supports the rods and cones – the retinal pigment epithelium, or RPE. The protein is essential for the eye to use vitamin A. And the gene therapy works, so far. Read More
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"The Sighted Leading the Sighted"
August 3, 2010
Normally a 9-year-old boy cavorting with a big, shaggy dog isn’t anything unusual, but when Corey Haas grabbed the leash of 1-year-old Mercury last Saturday, it was a stunning sight. For both Corey and Mercury, a briard sheepdog, were born with the exact same form of hereditary blindness, Leber congenital amaurosis (LCA). And Read More
Creating Life and Curing Blindness
May 21, 2010
I’ve been at the American Society of Gene and Cell Therapy annual meeting this week, garnering tales for my book, tentatively entitled “The Forever Fix.” It is largely the story of 9-year-old Corey Haas, who was on his way to certain blindness when gene therapy performed at the Children's Hospital of Philadelphia in September 2008 Read More
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