NCT07510074

Brief Summary

MINT is a single-site, prospective, randomized, double-blind, sham-controlled pilot trial evaluating the safety and feasibility of transcutaneous auricular vagus nerve stimulation (taVNS) in patients with moderate to severe traumatic brain injury (GCS 3-12). Participants will be randomized to receive either active taVNS or sham stimulation using the same device. The primary objective is to assess the safety and feasibility of taVNS implementation in the acute TBI setting. Secondary objectives include exploratory measurement of serum inflammatory and neuronal injury biomarkers and assessment of functional outcome using the Extended Glasgow Outcome Scale at hospital discharge.

Trial Health

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Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
16

participants targeted

Target at below P25 for not_applicable

Timeline
7mo left

Started Aug 2026

Shorter than P25 for not_applicable

Geographic Reach
1 country

2 active sites

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

February 23, 2026

Completed
1 month until next milestone

First Posted

Study publicly available on registry

April 3, 2026

Completed
4 months until next milestone

Study Start

First participant enrolled

August 1, 2026

Completed
5 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 1, 2027

Expected
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

March 1, 2027

Last Updated

July 17, 2026

Status Verified

July 1, 2026

Enrollment Period

5 months

First QC Date

February 23, 2026

Last Update Submit

July 15, 2026

Conditions

Keywords

Vagus nerve stimulation (VNS)InflammationCerebral edema

Outcome Measures

Primary Outcomes (2)

  • Number of Adverse Events

    Frequency of adverse events related to tsVNS will be assessed through systematic monitoring

    Baseline to study end (approximately 7 days)

  • Feasibility of recruitment

    Proportion of eligible patients who consent to participate in the study, protocol adherence, and device tolerability.

    Baseline

Secondary Outcomes (3)

  • Change in Interleuken-6 (IL-6) Biomarker Level

    Baseline to study end (approximately 7 days)

  • Change in Glial fibrillary acidic protein (GFAP) levels

    Baseline to study end (approximately 7 days)

  • Extended Glasgow Outcome Scale

    Baseline to study end (approximately 7 days)

Study Arms (2)

Treatment group taVNS

EXPERIMENTAL

Treatment with transauricular vagus nerve stimulation (taVNS) after admission to trauma with a traumatic brain injury (TBI)

Device: Nurosym taVNS

Control group

SHAM COMPARATOR

The control group will undergo sham stimulation using the same device placed at the same location with a brief, low level stimulation that tapers over 30 seconds.

Device: Nurosym (sham)

Interventions

Transcutaneous auricular vagus nerve stimulation (taVNS) is a non-invasive neuromodulation technique that electrically stimulates the auricular branch of the vagus nerve via electrodes placed on the tragus of the ear.

Also known as: Vagal nerve stimulator
Treatment group taVNS

Patients will have the device placed on their tragus and will receive a low level of stimulation that tapers to zero over 30 seconds.

Control group

Eligibility Criteria

Age18 Years - 75 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age 18-75 years old
  • Glasgow Coma Scale (GCS) Score 3-12
  • Expected Intensive Care Unit (ICU) stay \> 48 hours
  • Presenting with acute Traumatic Brain Injury (TBI) within 24 hours

You may not qualify if:

  • Pregnant
  • Any electrical implanted device
  • Immunomodulatory medication
  • Human Immune Deficiency Virus (HIV) patients
  • Autoimmune disease
  • Known cancer immunotherapy
  • Past medical history of symptomatic bradycardia
  • Penetrating brain injury
  • Clinical team assessment of prognosis and imminent risk of death such as Decision to withdraw life-sustaining measures
  • Current incarceration
  • Trauma/Laceration to the left ear

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

University Hospital

San Antonio, Texas, 78229, United States

Location

University of Texas Health Science Center at San Antonio

San Antonio, Texas, 78229, United States

Location

MeSH Terms

Conditions

Brain Injuries, TraumaticInflammationBrain Edema

Condition Hierarchy (Ancestors)

Brain InjuriesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesCraniocerebral TraumaTrauma, Nervous SystemWounds and InjuriesPathologic ProcessesPathological Conditions, Signs and Symptoms

Study Officials

  • Michael McGinity, MD

    The University of Texas Health Science Center at San Antonio

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Michael McGinity, MD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Double-blind design with participants (when cognitively able), outcome assessors, clinical teams, and laboratory personnel blinded to treatment assignment. Unblinded study personnel will program devices but not assess outcomes.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Single-site, prospective, randomized, double-blind, sham-controlled pilot trial
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Associate Professor

Study Record Dates

First Submitted

February 23, 2026

First Posted

April 3, 2026

Study Start

August 1, 2026

Primary Completion (Estimated)

January 1, 2027

Study Completion (Estimated)

March 1, 2027

Last Updated

July 17, 2026

Record last verified: 2026-07

Data Sharing

IPD Sharing
Will share

After primary publication, de-identified data may be shared with other researchers upon reasonable request, in accordance with NIH data sharing policies and procedures described in the informed consent document.

Shared Documents
STUDY PROTOCOL, SAP
Time Frame
At study completion after data analysis are complete and a publication is accepted to a journal.

Locations