Check out other stories from the Latest News

Common DNA Variations May Be Largest Factor in Autism

By Shana R. Spindler, Ph.D. on July 22, 2014
common variations


Background: The list of autism-associated genes has grown dramatically as researchers identify more and more genetic risk factors. But are these autism-linked genetic variations more often inherited from parents or formed de novo in the child?


What's new: Common, inherited variations in DNA may be the largest cause of autism, according to a new study published in Nature Genetics. According to the researchers, a little over 50 percent of autism cases are from a combination of widespread genetic variations, which alone do not lead to autism, passed from parents to a child. In contrast, new DNA mutations in the child only account for 2.6 percent of autism cases.


Why it's important: This study highlights the complexity of common genetic variations underlying autism.

Help me understand :
Source(s) :