Autism-associated biomarkers: test-retest reliability and relationship to quantitative social trait variation in rhesus monkeys.
Ozge Oztan, Catherine F Talbot, Emanuela Argilli and 8 others
PMID 34238350WHAT IT FOUND
In rhesus monkeys, lower cerebrospinal fluid arginine vasopressin predicted greater social impairment.
This is a correlational animal finding, not evidence of a biomarker or treatment target for human autism. It does not change clinical assessment or therapy.
Key findings
01Cerebrospinal fluid arginine vasopressin concentration predicted social trait variation, with lower levels associated with higher social impairment scores.
02Most biological measures showed stable within-individual consistency across multiple time points over ten months.
03The relationship between vasopressin and social impairment was correlational and did not establish causation.
STILL TO COME
How it was doneWhat they found
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What it does not show
The study was conducted entirely in non-human primates, so findings may not translate to human clinical populations. The relationship between vasopressin and social impairment is correlational, meaning low vasopressin does not necessarily cause the social difficulties. The study included only male monkeys, so it does not address whether this relationship exists in females. The social impairment scores were assessed only once per monkey, using a relatively new instrument. The sample did not include monkeys with the most extreme social impairment scores, so the absence of findings for other biological measures may not apply to severe cases.
Declared interests
Funding was provided by the Simons Foundation Autism Research Initiative, the National Institute of Child Health and Human Development, the NIH Office of the Director, and the Stanford University Department of Psychiatry and Behavioral Sciences.
The easy way to misread this
Do not interpret lower vasopressin as a causal mechanism for autism or a target for clinical intervention. This is an animal study showing a correlation in non-human primates. It does not support using vasopressin-related measures in human assessment or changing therapy approaches for patients with autism.