Close View of a DNA Strand

Gene therapy — the use or manipulation of genes to address disease — doesn’t get much attention in general health news. There were notable failures and problems early on, and since then, efforts have been more low-key.

But every now and then, a new study makes it clear that gene therapy researchers keep trying, and sometimes succeed.

A new study in The Lancet found that in patients with an inherited vision disorder called LCA, gene therapy improved eyesight, especially in children. (Tip for all non-nerds: If you find the study in The Lancet a bit too heavy on medical and genetic jargon, you can find a more readable overview here.)

The usual cautions apply here. LCA is a rare condition. This study was small and early-stage, involving only 12 patients. More research is required.

But it’s also an indication of how gene therapy is likely to proceed. Innovations will emerge gradually, one condition at a time, but they will come. As The Lancet notes, one upcoming challenge will be getting patients genotyped (having their genetic makeup analyzed) so that it’s easier to know who might benefit. In our book, we have more background on gene therapy in Chapter 9. In our next edition, we’d like to include more information on vision disorders, as many common ones have a strong genetic component.

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"As you read these pages, I hope you will be inspired to explore how you might use genetic information to improve your own health."
- Catherine Wicklund, MS, CGC
President, National Society of Genetic Counselors, 2007
from her foreword to The Genome Book

About the authors

April Lynch is an author whose work focuses on health and genetics. As an award-winning journalist, she directed coverage of science, health, and medicine for The San Jose Mercury News, Silicon Valley's leading newspaper. She has also written for a variety of other organizations, including leading university textbook publisher Pearson Education and genomics firm Navigenics. Her work on the book and this blog reflects her views, and not those of any employer or organization.


Vickie Venne, MS, CGC, is celebrating 30 years as a genetic counselor. She worked in prenatal, pediatric, and laboratory settings before joining the Hunstman Cancer Institute at the University of Utah. In addition to caring for patients, she has taught for the California Department of Education and the University of Utah's graduate program in genetic counseling. She has also served as president of the National Society of Genetic Counselors and the local affiliate of the Susan G. Komen Breast Cancer Foundation. Her work on the book and this blog reflects her views, and not those of any employer or organization.