The Science of Screeners for ASD

Screening for autism is meant to cast a broad net to gather those who show enough features to be included for a full diagnostic evaluation. The most common of these tools is the MCHAT – the Modified Checklist for Autism in Toddlers. An author of the MCHAT, Diana Robins, and a colleague, Andrea Wieckowski and others gathered over 50 studies (English and other languages) in different types of samples (high likelihood and low likelihood) to determine how the MCHAT was doing in terms of finding infants with autism as well as excluding those without autism. It also touched on how well primary care doctors were doing in administering this tool. If you want to see the MCHAT for yourself or take it for your child, there is a FREE website, click here: https://mchatscreen.com

To read the paper, click here: https://pubmed.ncbi.nlm.nih.gov/36804771/

Our 1 in 54 need more

On Thursday the 26th, the Centers for Disease Control released new prevalence numbers: the prevalence of ASD has jumped from 1 in 59 to 1 in 54 kids who are 8. They also revealed prevalence numbers in 4 year olds. On this week’s podcast. CDC epidemiologist Dr. Matthew Maenner (and ASF class of 2010 predoctoral fellow) explains the numbers, where they came from, what they mean and where the trend in prevalence numbers is going. Shockingly, even though the numbers keep going up, some people are not getting an autism diagnosis when they should.

https://www.cdc.gov/mmwr/volumes/69/ss/ss6904a1.htm
https://www.cdc.gov/ncbddd/autism/addm-community-report/index.html

What’s new in the immune system and ASD

This holiday weekend always triggers a reincarnation, a resurrection of the vaccine – autism hypothesis.  Many of you have read about the measles epidemics that are hitting many areas of the country.  But besides vaccines, there are other aspects of the immune system that may be linked to autism in some people.  The include family history of autoimmune disorders as well as specific genetic mutations that confer protection against subtypes of ASD.  This week’s ASF podcast will explore these theories and present different ideas on how the immune response is involved in autism, and if it is at all.

https://www.ncbi.nlm.nih.gov/pubmed/30976114 

https://www.ncbi.nlm.nih.gov/pubmed/30975444

 

Targeting environmental chemicals in neurodevelopmental disorders

This week a group of experts met to build consensus around the effects of environmental chemicals on the developing brain. Autism was part of this discussion. And a new large-scale study shows that c-sections do not cause autism, it is something else related to c-sections.