Study Stopped
Investigator decided to terminate the study - no participant enrolled.
Vagus Nerve Stimulator for Autism and Other Developmental Disorders
VNS
Vagus Nerve Stimulation for Autonomic Dysregulation in Individuals With Developmental Disorders
1 other identifier
interventional
N/A
1 country
2
Brief Summary
The goal of this flexible single-subject design vagus nerve stimulation (VNS) study is to examine the behavioral, cognitive, and biorhythmic effects of VNS in children and adults with autism and developmental disabilities. The main aims are:
- Pilot the creation of a profile for those who will respond to VNS with the long-term goal of designing clinical trials.
- Examine the effects of VNS on a broad range of symptoms. Participants will select between 1, 2, or 3 months of daily VNS treatment and complete study visits each month.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
Started May 2025
Typical duration for not_applicable
2 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
July 7, 2023
CompletedFirst Posted
Study publicly available on registry
February 14, 2024
CompletedStudy Start
First participant enrolled
May 1, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 1, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
December 1, 2027
February 13, 2026
May 1, 2025
2.6 years
July 7, 2023
February 10, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (6)
Aberrant Behavior Checklist-Community (ABC-C)
The ABC-C is a 58-item questionnaire consisting of five subscales: Irritability, Lethargy, Inappropriate Speech, Hyperactivity, and Stereotypy. Minimum score = 0, maximum score = 174. Higher scores indicate more severity.
Change measured once per month for 3, 4, or 5 months
Pervasive Developmental Disorder Behavior Inventory (PDDBI)
The PDDBI is an informant-based assessment that examines treatment effectiveness and differentiates ASD from other conditions. It consists of the following Approach/Withdrawal Problems: 1) Sensory/Perceptual Approach, 2) Ritualisms/Resistance to Change, 3) Social Pragmatic, 4) Semantic Pragmatic, 5) Arousal Regulation, 6) Specific Fears, 7) Aggressiveness. Under Receptive/ Expressive Social Communication Abilities, there are 1) Social Approach Behaviors, 2) Expressive Language, and 3) Learning, Memory, and Receptive Language. Higher T scores on Approach/Withdrawal Problems indicate more symptom severity and higher T scores on Receptive/Expressive Social Communication indicate more skills.
Change measured once per month for 3, 4, or 5 months
Behavior Rating Inventory of Executive Function (BRIEF)
The BRIEF is an informant-based assessment that contains 63 (preschool age) 86 (school age) items with eight subdomains of executive function: 1) Inhibit, 2) Shift, and 3) Emotional Control subdomains together result in an additional composite Behavioral Regulation Index. The subdomains 4) Initiate, 5) Working Memory, 6) Plan/Organize, 7) Organization of Materials, and 8) Monitor provide a composite Metacognition Index. The indexes are also combined to obtain an overall Global Executive Composite. Higher T scores indicate more symptom severity.
Change measured once per month for 3, 4, or 5 months
The Symptom Checklist-90-Revised (SCL-90-R)
The SCL-90-R is a questionnaire designed to evaluate a broad range of psychological problems and symptoms of psychopathology. It is also useful in measuring treatment outcomes. Higher T scores indicate more symptom severity.
Change measured once per month for 3, 4, or 5 months
Repetitive Behavior Scale-Revised (RBS-R)
The RBS-R is a 44-item questionnaire that is used to measure the breadth of repetitive behavior in people with ASD. The RBS-R consists of six subscales including: Stereotyped, Self-injurious, Compulsive, Routine, Sameness, and Restricted Behaviors. Minimum score = 0; maximum score = 136. Higher scores indicate more severity.
Change measured once per month for 3, 4, or 5 months
Yale-Brown Obsessive Compulsive Scale (Y-BOCS) (Y-BOCS)
The Y-BOCS is a measurement tool for OCD. It is not a diagnostic tool. Rather, it is a scale used to gauge the severity and nature of OCD symptoms and to monitor improvement. Higher scores indicate severity. Minimum score = 0; maximum score = 40. Higher scores indicate more severity.
Change measured once per month for 3, 4, or 5 months
Secondary Outcomes (3)
Neurocognitive assessment
Change measured once per month for 3, 4, or 5 months
Electro-encephalogram (EEG)
Change measured once per month for 3, 4, or 5 months
Biorhythmic motion measurements
Change measured once per month for 3, 4, or 5 months
Other Outcomes (3)
Non-verbal Pain Measure
Twice per day for 3, 4, or 5 months
Columbia-Suicide Severity Rating Scale (C-SSRS)
every 4 weeks for 3, 4, or 5 months
Clinical Global Impression Scale Severity & Improvement (CGI-S, CGI-I)
Change measured once per month for 3, 4, or 5 months
Study Arms (1)
Vagus Nerve Stimulation (VNS)
EXPERIMENTALSingle-subject design: ABA, ABBA, or ABBBA This study allows for a flexibility in the duration of research participation depending on one's response. The participant will be able to select one of the three design options (1, 2, or 3 months of VNS twice per day) in consultation with the study staff. That is, after the initial 1-month trial of VNS, the participant may choose to extend the VNS two more times (i.e., 1 or 2 months), for a total of 90 days.
Interventions
Vagal nerve stimulation (VNS) involves the use of a device to stimulate the vagus nerve with electrical impulses twice per day (AM \& PM) for two minutes each. It is an approved treatment for treatment resistant epilepsy and depression.
Eligibility Criteria
You may qualify if:
- Children and adults aged 12-40 with intellectual and developmental disability (IDD) and/or autism spectrum disorder (ASD). Participants who are decisionally-impaired will be eligible with assent.
- Able to tolerate wearing an Apple Watch, EEG, and sit for a neurocognitive test
- Be on a stable dose of psychotropic medication for at least one month prior to enrollment
- Agree not to initiate new or change existing medications or behavior intervention
You may not qualify if:
- Have an active implantable medical device (e.g., pacemaker, implanted hearing aid, etc.) or a metallic device, such as a stent, bone plate, or bone screw
- Have a comorbid physical or psychiatric disorder which would disrupt ability to tolerate vagal stimulation or comply with study demands (e.g., insulin dependent diabetes, bipolar, etc.)
- Vagus nerve lesion, damage, or structural abnormality (e.g., lymphadenopathy, neoplasm, previous surgery), or pain (e.g., dysesthesia, neuralgia and/or cervicalgia)
- Current or past history of neurological disorders or trauma, including uncontrolled epilepsy and head injury.
- Current or recent (within 12 months) participation in a clinical trial of a drug or a medical device.
- Use of drugs (within 4 weeks) that affect the autonomic nervous system (beta blockers, beta stimulant, etc.).
- Use of marijuana (including medical marijuana) for any indication
- Any condition per the investigators' clinical judgment that precludes participation in the study (e.g., pregnancy).
- Lack of capacity to consent and without a legally authorized representative (LAR) who is a parent, spouse, or an adult child.
- Living in a residential program (e.g., group home)
- Wards of state
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (2)
New York State Psychiatric Institute
New York, New York, 10032, United States
New York State Institute for Basic Research
Staten Island, New York, 10314, United States
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Helen Yoo, Ph.D.
New York State Institute for Basic Research
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- OTHER GOV
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
July 7, 2023
First Posted
February 14, 2024
Study Start
May 1, 2025
Primary Completion (Estimated)
December 1, 2027
Study Completion (Estimated)
December 1, 2027
Last Updated
February 13, 2026
Record last verified: 2025-05
Data Sharing
- IPD Sharing
- Will not share
Study withdrawn.