Possible early diagnosis of autism spectrum disorder

June 29, 2017
Dr. Dwight German, Professor of Psychiatry. Credit: UT Southwestern

Measuring a set of proteins in the blood may enable earlier diagnosis of autism spectrum disorder (ASD), according to a study from the Peter O'Donnell Jr. Brain Institute at UT Southwestern Medical Center.

The research found that the levels of two proteins previously identified as potential markers for ASD could help scientists accurately diagnose the disorder in approximately 75 percent of the children studied. When the two proteins are measured together, the increased to 82 percent.

The study published in the Journal of Neuroinflammation is among several recent and ongoing efforts to improve early diagnosis of ASD by shifting focus to biological measurements instead of behavioral symptoms.

Progress in this area could lead to earlier intervention and help limit the effects of the disorder, said Dr. Dwight German, study senior author and Professor of Psychiatry at UT Southwestern.

"ASD is a very heterogeneous disorder, and if we can identify biomarkers for even a subgroup of ASD patients, then that would be extremely helpful not only for but also for the development of therapeutics," said Dr. German, whose latest research builds upon an ASD finding published last year in Scientific Reports.

ASD affects approximately 1 in 68 children in the U.S. The is characterized by social interaction and communication challenges, and restricted and repetitive patterns of behavior.

Most cases are not diagnosed until about age 4, when communication and social disabilities become apparent. However, recent research offers hope that detection may be possible by age 1 by measuring brain growth.

Explore further: Elevated rate of autism symptoms found in children with Tourette syndrome

More information: Sarika Singh et al. Serum thyroid-stimulating hormone and interleukin-8 levels in boys with autism spectrum disorder, Journal of Neuroinflammation (2017). DOI: 10.1186/s12974-017-0888-4

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