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Study of Gammacore Sapphire for the Acute and Preventive Treatment of Post-Traumatic Headache (GAP-PTH)

A Randomized, Single-Center, Double-Blind, Parallel, Sham-Controlled Study of Gammacore Sapphire (Non-Invasive Vagus Nerve Stimulator) for the Acute and Preventive Treatment of Post-Traumatic Headache (GAP-PTH)

Status
Withdrawn
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04071743
Enrollment
0
Registered
2019-08-28
Start date
2020-01-01
Completion date
2021-12-31
Last updated
2020-03-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Post-Traumatic Headache

Brief summary

The purpose of this single-center, prospective, randomized, double-blind, sham controlled, parallel-group study is to collect clinical data related to the safety and efficacy of vagus nerve stimulation for the acute and preventive treatment of Post Traumatic Headache.

Detailed description

The study will enroll 60 subjects over a period of 14 weeks each. Subjects will use either a sham or active device to treat acute Post Traumatic Headache. Investigators will collect clinical data related to the use of the device.

Interventions

non-invasive vagus nerve stimulator

DEVICEsham gammaCore Sapphire

sham gammaCore Sapphire

Sponsors

ElectroCore INC
CollaboratorINDUSTRY
University of Texas Southwestern Medical Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
Yes

Inclusion criteria

1. Meets the ICHD-3 criteria for acute headache attributed to mild traumatic injury to the head 2. Experiences a minimum of 2 headaches (migraine or probable migraine phenotype) per week 3. Presentation to clinic between 2 and 4 weeks after injury 4. Able to provide written informed consent

Exclusion criteria

1. Any pre-existing primary headache disorder (with the exception of infrequent episodic tension type headache) 2. Any contraindication to using nVNS 3. Initiation or change in the dosage of any medication commonly used or headache prophylaxis 3 months before enrollment into the study 4. Continuous headache at the time of enrollment 5. PTH \>4 weeks after injury 6. Structural abnormality at the nVNS treatment site (e.g., lymphadenopathy, previous surgery, abnormal anatomy) 7. Pain at the nVNS treatment site (e.g., dysesthesia, neuralgia, cervicalgia) 8. Other significant pain problem (e.g., cancer pain, fibromyalgia, other head or facial pain disorder) that, in the opinion of the Investigator, may confound the study assessments 9. Known or suspected severe cardiac disease (e.g., symptomatic coronary artery disease, prior myocardial infarction, congestive heart failure) or an abnormal baseline electrocardiogram (ECG) within the last year (e.g., second- or third-degree heart block, prolonged QT interval, atrial fibrillation, atrial flutter, history of ventricular tachycardia or ventricular fibrillation, clinically significant premature ventricular contraction) 10. Known or suspected cerebrovascular disease (e.g., prior stroke or transient ischemic attack, symptomatic carotid artery disease, prior carotid endarterectomy or other vascular neck surgery) 11. Previous cervical vagotomy 12. A relative of or an employee of the Investigator or the clinical study site 13. Previously used gammaCore

Design outcomes

Primary

MeasureTime frameDescription
Relief of Post Traumatic HeadacheOver 14 weeksDecrease in pain between active and sham treatment groups between the baseline assessment and 60 minutes post-treatment on a subset of questions from the Sport Concussion Assessment Tool, 5th edition (SCAT5) Graded Symptom Checklist

Secondary

MeasureTime frameDescription
Decrease in PainOver 14 weeks• Decrease in pain (based on the 7-point NRS) at 30 and 120 minutes after initial treatment, for all treated attacks in the nVNS and sham treatment groups

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026