Listen to this page using ReadSpeaker
Posts tagged autosomal recessive

Embrace Your Exceptions: A Mantra for Understanding Retinal-Disease Inheritance

Stephen Daiger, Ph.D. and colleague Lori Sullivan, Ph.D.Inherited retinal diseases are difficult to understand merely because they’re so rare and diverse. More than 250 genes, when mutated, can cause them, yet collectively, they affect only 200,000 people in the United States.

Their widely varying impact on vision adds to the challenge. For example, the youngest sibling in a family may be nearly blind from retinitis pigmentosa (RP), while his or her older brother or sister with the same RP gene mutation can have near normal vision.

But as FFB-funded retinal geneticist Stephen Daiger, Ph.D., discussed at the RD2016 meeting in Kyoto, Japan, the complex and elusive nature of these conditions can also extend to the way they are passed down in families, making diagnosis and prognosis quite challenging. Dr. Daiger was one of nearly 300 retinal researchers who gathered September 19-24, 2016, for the world’s largest conference focused exclusively on retinal degenerative diseases. The conference was supported in-part by FFB.
Continue Reading…

Genetics 101: How Some Retinal Diseases are Inherited

Egg and spermLong before the advent of genetic testing, or even knowledge of DNA and RNA, astute observers noticed that many traits were passed from one generation to another. But it still can be difficult to understand why some people inherit a genetic disease and others do not. Also, it’s often not clear which family members are at risk of inheriting a condition.
Continue Reading…

ARVO 2014: Breaking the 50-Percent Barrier in Successful Genetic Screenings

While it makes perfect sense to get excited about the progress being made in developing sight-saving treatments and cures, we shouldn’t lose sight (no pun intended) of the importance of successfully diagnosing patients. Though some therapies under development will work independent of patients’ defective genes, knowing their mutation(s) opens the door to a precise diagnosis, a more accurate prognosis and a much better understanding of which emerging therapies might save or restore vision down the road. Participation in clinical, or human, trials often requires a genetic diagnosis as well.
Continue Reading…