Tune-in today to hear Autism Speaks’ leadership discuss the recently released analysis of the DSM-5, to be published in 2013, and hear about its potential implications for individuals to receive an autism diagnosis and appropriate services.
- Autism Speaks’ Dr. Andy Shih will be live on MSNBC “News Nation with Tamron Hall” at 2:20 EST
- Then, please join us for a live web chat at 3 pm with Autism Speaks Chief Science Officer Dr. Geraldine Dawson and Vice President of Family Services Lisa Goring at 3 pm – click on the tab on the Autism Speaks Facebook page to join in! Click here for instant access to the tab. You can read the completed transcript of the chat here.
- Today’s New York Times story, ‘New Definition of Autism Will Exclude Many, Study Suggests‘
quoted Mark Roithmayr. This is what will be discussed on the stories to be aired today and the webchat.
Read Geri Dawson’s blog post about the DSM-5, The Changing Definition of Autism: Critical Issues Ahead.
Watch Autism Speaks’ Dr. Andy Shih discuss the story on MSNBC “News Nation with Tamron Hall”
With the release of the first major report of the Autism Speaks Baby Siblings Research Consortium, the world learned that the autism recurs in families at a much higher rate than previously estimated. For perspective and guidance, the national media turned to our director of research for environmental sciences, Alycia Halladay, PhD.
Autism Speaks’ Alycia Halladay, Ph.D., provides perspective on NPR’s All Things Considered. To listen to the segment, visit here.
The CBS Early Show aired, ‘Study suggests link between Autism, siblings’ that can be viewed here.
For Siblings of Autistic Kids, Risk Is Far Higher Than Thought (TIME)
Autism runs in families to a much greater degree than previously thought, according to new research that has tracked the younger siblings of children with the developmental disorder. Read more.
Chance of having more than one autistic child higher than thought (MSNBC)
Siblings of kids with autism have a higher risk of being diagnosed with the disorder than previously believed, suggests a new study. Read more.
Autism Risk for Siblings Higher Than Expected (The New York Times)
Parents who have a child with autism have about a 1 in 5 chance of having a second child with autism, a far greater risk than previously believed, new research shows. Read more.
As head of clinical programs at Autism Speaks, I oversee a number of vital resources for researchers studying the causes and treatment of autism. Today brought the publication of a new and revealing study made possible by Autism Speaks’ Autism Genetic Resource Exchange (AGRE).
Autism researchers have been studying twins for years for insights into the genetic and nongenetic factors that influence the development of autism. One of the most powerful ways to do so is to study twins (both identical and non-identical) where at least one of the pair has autism. This approach allows us to look at how often both twins receive a diagnosis of autism. Study of identical twins, who share 100 percent of their genes, then helps us determine the degree to which autism is inherited, or genetic; and comparison to fraternal twins, who share around 50 percent of their DNA, allows us to understand how environmental influences add to the risk of autism spectrum disorder (ASD).
But until now we’ve had only three, small twin studies, which together looked at just 66 twin pairs–a number too small to produce reliable conclusions. Still, these studies were the best we had, and theysuggested that when one identical twin develops an ASD, the chance of the other twin developing the disorder is as high as 90 percent. These same studies showed little to no overlap among fraternal twins – leading to the conclusion that inherited genes alone produced the risk.
Now comes the game changer. The California Autism Twins Study (CATS) is the largest ever study of twins with ASD, with scientifically reliable information on 192 twin pairs, both identical and fraternal. It was conducted by a group of renowned researchers in collaboration with the AGRE team. AGRE clinical staff collected DNA and helped perform the home-based diagnostic and cognitive testing on many of the participants, using scientifically validated research measures for diagnosing ASD.
So what were its dramatic findings?
It found that when one identical twin develops autism, the chance of the other twin developing the disorder is 70 percent. More surprisingly, it documented a whopping 35 percent overlap among fraternal twins. This is strong evidence that environmental influences are at play. Moreover, the 35 percent “both twins affected” rate is higher than the 3 percent to 14 percent overlap between different age siblings. (i.e. If one child in a family has autism, there is a 3 percent to 14 percent chance that a younger sibling will develop it.) This suggests that there are environmental influences uniquely shared by twins–for instance, in the womb and perhaps during birth.
In other words, we now have strong evidence that, on top of genetic heritability, a shared prenatal environment may have a greater than previously realized role in the development of autism in twins
This has important implications for future research. For instance, is there a particular time period during the pregnancy when a child’s brain development is particularly vulnerable to environmental influences? And what might these influences be? Already we have evidence implicating such factors as advanced parental age, maternal nutrition, maternal infections (especially flu) during pregnancy, and premature and/or underweight birth. Indeed, multiple-birth pregnancies are themselves associated with increased risk of developmental disorders such as cerebral palsy and autism.
Only by further studying these issues can we begin to provide parents and parents-to-be with the reliable guidance they seek and need. Autism Speaks is currently investing in several studies that are exploring how environmental factors increase the risk for ASD. As we go forward in these endeavors, we greatly value your input. So please write and share your comments on our blog and website. For more on the study, read The Womb as Environment.
On July 5th, NBC Nightly News came to Andy Shih, Autism Speaks’ vice president of scientific affairs, for perspective on the game-changing California Autism Twins study. To view the clip please visit here.
More national television media coverage of the ground-breaking results of the California Autism Twin study–research made possible by the Autism Speaks Autism Genetic Resource Exchange (AGRE) and Autism Speaks’ supporters such as you.
On Monday April 11th Suzanne and Bob Wright, Founders of Autism Speaks, were interviewed by MSNBC’s Andrea Mitchell in recognition of April as the nation’s month for autism awareness. Key points discussed – funding for research and adults with autism.