CClinicalTrials.gg
RecruitingNCT06473623Updated Jan 8, 2026

Non-invasive Auricular Fiber Vagus Nerve Stimulation (afVNS) for Treatment of Autism Spectrum Disorder

An interventional study of vagus nerve stimulation in Autism Spectrum Disorder, sponsored by Neuropix. Recruiting at 1 site in Hong Kong. Open to participants aged 7 Years to 26 Years. Per ClinicalTrials.gov, last updated 2026-01-08.

Sponsored by Neuropix · Not applicable, Interventional, and Device feasibility

From the registry’s dates

  • Primary completion was expected by Feb 2026, 8 months ago, but the record still lists the study as recruiting.
  • Started Dec 2025; still recruiting 10 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Ages
7 Years to 26 Years
Sex
All
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Study summary

Non-invasive vagus nerve stimulation for the symptomatic improvements in Autism Spectrum Disorder

Read the detailed description

A single arm open-label study in Autism Spectrum Disorder (ASD) for evaluating treatment effects of non-invasive VNS, specifically auricular fiber vagal nerve stimulation (afVNS). A total of 20 patients diagnosed with ASD will be recruited to evaluate the feasibility of home healthcare application of afVNS and for assessment of short-term treatment effects on symptoms and comorbidities. ASD patients will receive 1 x hour per day afVNS treatment over 14 days with a fixed neuromodulation protocol. The primary outcome measure is feasibility assessed from completion success and neurostimulation tolerance. Secondary outcome measures include changes in scores pre- and post- afVNS treatment for Clinician Global Clinical Impression (CGI-I), Clinician Global Impression Severity (CGI-S), Children's Anxiety Sensitivity Index (CASI-R), Parent-Rated Anxiety Scale for ASD (PRAS-ASD), Autistic Behavior Checklist (ABC), Cleveland Adolescent Sleep Questionnaire (CASQ), verbal fluency and biomarker measures in autonomic physiology.

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Conditions studied

  • Autism Spectrum Disorder
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In context

Autism Spectrum Disorder

1,727 studies on the registry are indexed under Autism Spectrum Disorder; 504 are open to participants now.

This study's planned enrollment of 20 is below the median of 52 across 1,371 interventional studies indexed under Autism Spectrum Disorder.

Browse Autism Spectrum Disorder studies →

Lead sponsor

This is the only study on the registry with Neuropix as lead sponsor.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
7 Years to 26 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Written informed consent
  • Age: between 7 and 26 years
  • Participants and parent/ guardian must have proficiency in English
  • Diagnosis of ASD as defined by ADOS-2 or DSM-5 criteria

Exclusion criteria

Exclusion Criteria:

  • Severe psychiatric disorders (e.g. bipolar, major depressive disorder)
  • Severe neurological disorders (e.g. stroke, epilepsy)
  • Bradyarrhythmia
  • History of head trauma (surgery or tumor)
  • Active medical implants (cochlear, VNS or pacemakers)
  • Cerebral shunts
  • Auricular skin disease that compromises placement of electrodes
  • Pregnancy
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Study design

Phase
Not applicable
Primary purpose
Device feasibility
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (estimated)

Study arms

  • Experimental
    Treatment Arm

    Receiving intervention of the non-invasive neurostimulation device.

    Device: vagus nerve stimulation

Interventions

  • Devicevagus nerve stimulation

    Non-invasive Auricular Fiber Vagus Nerve Stimulation (afVNS)

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What researchers measure

Primary outcomes

  1. Feasibility for completed treatments and stimulation intensity tolerance

    Completion success and neurostimulation tolerance

    Time frame: 2 weeks

Secondary outcomes

  1. Clinician Global Clinical Impression (CGI-I)

    For core social impairment and overall level of cognitive, adaptive and social functioning

    Time frame: 2 weeks

  2. Clinician Global Impression Severity (CGI-S)

    For assessment of anxiety, gastrointestinal symptoms and social interactions and overall ASD

    Time frame: 2 weeks

  3. Parent-Rated Anxiety Scale for ASD (PRAS-ASD)

    For anxiety assessment consisting of 25 questions related to anxiety ranging from 0 (none) to 3 (severe)

    Time frame: 2 weeks

  4. Autistic Behavior Checklist (ABC) scores

    For measurements of 5 behavioral domains including irritability, social withdrawal, stereotypy, hyperactivity and inappropriate speech

    Time frame: 2 weeks

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Study locations

1 of 1 sites recruiting
  • Hong Kong Science Park
    Tai Po, Hong Kong
    Recruiting
08

References and documents

Publications

  • Jin Y, Kong J. Transcutaneous Vagus Nerve Stimulation: A Promising Method for Treatment of Autism Spectrum Disorders. Front Neurosci. 2017 Jan 20;10:609. doi: 10.3389/fnins.2016.00609. eCollection 2016. PubMed 28163670 ↗
  • Black B, Hunter S, Cottrell H, Dar R, Takahashi N, Ferguson BJ, Valter Y, Porges E, Datta A, Beversdorf DQ. Remotely supervised at-home delivery of taVNS for autism spectrum disorder: feasibility and initial efficacy. Front Psychiatry. 2023 Sep 28;14:1238328. doi: 10.3389/fpsyt.2023.1238328. eCollection 2023. PubMed 37840787 ↗
  • Molero-Chamizo A, Nitsche MA, Bolz A, Andujar Barroso RT, Alameda Bailen JR, Garcia Palomeque JC, Rivera-Urbina GN. Non-Invasive Transcutaneous Vagus Nerve Stimulation for the Treatment of Fibromyalgia Symptoms: A Study Protocol. Brain Sci. 2022 Jan 12;12(1):95. doi: 10.3390/brainsci12010095. PubMed 35053839 ↗

Study documents

  • Study protocol · Oct 1, 2025
  • Statistical analysis plan · Oct 1, 2025

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 8, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT06473623
Lead sponsor
Neuropix
Responsible party
Sponsor
First posted
Jun 25, 2024
Start date
Dec 1, 2025
Primary completion
Feb 1, 2026 (estimated)
Completion
Feb 10, 2026 (estimated)
Last update
Jan 8, 2026

Study contacts

Daniel Ko, PhD
Contact
danielko@neuro-pix.com
+85255308212
Angela Peng, Bsc
Contact
angelapeng@neuropix.co
Daniel Ko, PhD
principal investigator · Neuropix

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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