Intermittent Theta Burst Stimulation Improves Sleep in Autism Spectrum Disorder by Reorganizing Overlapping Brain Networks With Neurochemical and Transcriptomic Signatures: A Randomized Controlled Trial.

This was a randomised controlled trial — people were assigned to treatments by chance, which is the most reliable way to tell whether a treatment itself caused a change.

It involved 70 people — a modest group, enough to be interesting but not enough to settle a question on its own.

The study ran for 8 weeks. That is a short window, so it says nothing about whether the effects last.

The researchers concluded: "This study provides multiscale evidence for the biological context underlying iTBS-related changes in overlapping network architecture in ASD with chronic insomnia."

This record does not state:

• the ages of the people who took part

This is a plain-language summary of one paper's abstract, not medical advice. Talk to your child's clinician before changing anything.

Journal: CNS neuroscience & therapeutics

Year: 2026

Design: Randomized Controlled Trial

Participants: 70

Intervention: real or sham iTBS targeting the left orbitofrontal cortex, administered once daily for 8 weeks

Co-occurring conditions: Sleep Initiation and Maintenance Disorders

Authors: Huashuang Zhang, Bincan Xiong, Hongchi Liu, Yilin Huang, Jingwen Zhang, Ruimin Yu, Wenqi Jiang, Tongjia She

BACKGROUND: Overlapping network architecture supports functional integration and multifunctional regional engagement in the brain, and may serve as a candidate biomarker for interventions in autism spectrum disorder (ASD). However, the biological context underlying intermittent theta-burst stimulation (iTBS)-related changes in overlapping network architecture remains poorly understood. METHODS: Seventy patients with ASD and chronic insomnia were randomly assigned to receive either real or sham iTBS targeting the left orbitofrontal cortex, administered once daily for 8 weeks. The Insomnia Severity Index (ISI) and resting-state functional magnetic resonance imaging (fMRI) data were collected at baseline and after the intervention. The Shannon-entropy diversity coefficient was calculated to characterize overlapping network architecture. The JuSpace toolbox was used to assess spatial correspondence between iTBS-related network changes and neurotransmitter systems. Transcriptomic-neuroimaging association analyses were then performed using gene-expression data from the Allen Human Brain Atlas. RESULTS: Sleep improvement following real iTBS was accompanied by changes in overlapping network architecture across 13 cortical regions. These changes showed spatial correspondence with mGluR5 and GABA_A receptor density maps. Regions showing iTBS-related network changes were associated with glutamatergic synaptic transmission and calcium-dependent signaling, enriched for cortical excitatory neuronal signatures with peak expression during adolescence, and organized into a highly interconnected protein-protein interaction network centered on the Ca2+-PKA signaling axis. CONCLUSIONS: This study provides multiscale evidence for the biological context underlying iTBS-related changes in overlapping network architecture in ASD with chronic insomnia.

CNS neuroscience & therapeutics, 2026

PMID 42590803

DOI 10.1002/cns.71041

This record was extracted from the paper's PubMed abstract and metadata. Full-text methods and risk-of-bias details were not reviewed.