From Columbia University: “60 New Autism Genes Identified”

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From Columbia University

8.18.22

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A new study led by Columbia researchers has uncovered 60 genes linked to autism spectrum disorder (ASD) that may provide important clues to the causes of autism across the full spectrum of the disorder.

“Overall, the genes we found may represent a different class of genes that are more directly associated with the core symptoms of ASD than previously discovered genes,” says Wendy Chung, MD, PhD, the Kennedy Family Professor of Pediatrics and chief of clinical genetics in the Department of Pediatrics at the Columbia University Vagelos College of Physicians and Surgeons.

The findings were published Aug. 18 in Nature Genetics [below].

Several genes have been previously linked to autism and as a group are responsible for about 20% of all cases. Most individuals who carry these genes have profound forms of autism and additional neurological issues, such as epilepsy and intellectual disability.

To uncover hidden autism genes that can explain the majority of cases, the researchers tapped into data from nearly 43,000 people with autism, including 35,000 individuals from the SPARK autism research study of the Simons Foundation.

Five of the genes identified by the new study have a more moderate impact on autism characteristics, including cognition, than previously discovered genes.

“We need to do more detailed studies including more individuals who carry these genes to understand how each gene contributes to the features of autism, but we think these genes will help us unravel the biological underpinnings that lead to most cases of autism,” Chung says.

The five newly identified genes also explain why autism often seems to run in families. Unlike previously known autism genes, which are due to de novo or new mutations, genetic variants in the five new genes were often inherited from the participant’s parents.

Chung says that many more moderate-effect genes remain to be discovered and finding them should help researchers better understand the biology of the brain and behavior across the full spectrum of autism.

Science paper:
Nature Genetics

See the full article here .

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