ClinicalTrials.gg
RecruitingNCT07487818Updated Sep 25, 2026

A Study Of Vagal Nerve Stimulation In Conjunction With NRT For Smoking Cessation

A Phase 2/3 interventional study of Non-invasive vagus nerve stimulator plus nicotine replacement patches and nicotine replacement patches in Smoking Cessation, sponsored by Mayo Clinic. Recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-25.

Sponsored by Mayo Clinic · Phase 2/3, Interventional, and Treatment

From the registry’s dates

  • Started Jun 2026; still recruiting 5 months later.
Updated Sep 25, 2026Start date movedPrimary completion moved+3 moreGo to Updates ↓
Phase
Phase 2/3
Study type
Interventional
Enrollment
150
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to provide preliminary evidence for the efficacy of 12 weeks of vagal nerve stimulation (VNS) and nicotine replacement therapy (NRT) for increasing smoking abstinence rates.

Read the detailed description

This study will evaluate the role of vagal nerve stimulation as a potential adjunct to nicotine patches to help smokers stop smoking.

02

Conditions studied

  • Smoking Cessation

Keywords

  • nicotine dependence
  • smoking
  • vagal nerve stimulator
  • VNS
  • varenicline
  • nicotine replacement therapy
  • nicotine patches
03

In context

Smoking Cessation

1,581 studies on the registry are indexed under Smoking Cessation; 198 are open to participants now.

This study's planned enrollment of 150 is close to the median of 164 across 1,423 interventional studies indexed under Smoking Cessation.

Browse Smoking Cessation studies →

Lead sponsor

Mayo Clinic is the lead sponsor of 3,269 studies on the registry; 672 are open to participants now.

Of its 452 completed or terminated interventional studies of FDA-regulated products, 321 (71%) have results posted.

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

04

Who can participate

The criteria were revised on the registry on Sep 25, 2026. See what changed

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • 18 years of age or older at the time of consent.
  • Currently smoking cigarettes on a regular basis
  • Motivated to stop smoking (on a scale of 0 to 10, motivation must be 3 or above);
  • Ability to participate fully in all aspects of the study.
  • Have the ability to provide .
  • Have no contraindicating comorbid health conditions that would interfere with study participation, as determined by the clinical investigators.

Exclusion criteria

Exclusion Criteria:

  • Patients with a current moderate/severe depression as assessed by a score of ≥10 on the Patient Health Questionnaire-9 (PHQ-9).
  • Patients who are or have used an drug within the past 30 days.
  • Patients who are currently using medication(s) known to interact with varenicline.
  • Patients who have acute/chronic progressive or unstable neurologic, hepatic, renal, cardiovascular, psychological, respiratory, or metabolic disease.
  • Patients with a known allergy to nicotine patches or varenicline.
  • Patients with a personal history of acute pancreatitis, hypoglycemia, acute kidney injury or impairment of renal function, type 1 diabetes or diabetic ketoacidosis, and/or severe gastrointestinal disease such as gastroparesis.
  • Patients with an active implantable medical device, such as a pacemaker, hearing aid implant, or any implanted electronic device.
  • Patients diagnosed with narrowing of the arteries (carotid atherosclerosis)
  • Patients who have had surgery to cut the vagus nerve in the neck (cervical vagotomy)
  • Patients with clinically significant hypertension, hypotension, bradycardia, or tachycardia
  • Patients who have a metallic device such as a stent, bone plate, or bone screw implanted at or near your neck
  • Patients who are using another device at the same time (e.g., TENS Unit, muscle stimulator) or any portable electronic device (e.g., mobile phone).
  • Women who are pregnant or lactating, or who are of and are likely to become pregnant during the medication phase but are not willing to use a reliable form of , will also be excluded.

    1. Reliable forms of contraception include oral contraception, diaphragm or condom (with spermicide), injections, intrauterine devices, surgical sterilization, and abstinence. The study does not include vulnerable populations.
    2. Specifically, the study does not include fetuses, neonates, pregnant women, children (\<18 years of age), prisoners, institutionalized individuals, or other vulnerable populations.

    i. All female participants of childbearing potential must have a negative pregnancy test and must agree to use approved contraception during study participation.

Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Phase 2 / Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
150 participants (estimated)

Study arms

  • Experimental
    Vagal Nerve Stimulator and Nicotine Replacement Patches

    This arm will receive nicotine patches (21 mg) for 12 weeks and brief behavioral therapy (through the self-help manual Smoke Free and Living It), as well as the vagal nerve stimulator (VNS) device to use during these 12 weeks while trying to stop smoking. The VNS delivers up to 30 stimulations over 24 hours.

    Combination Product: Non-invasive vagus nerve stimulator plus nicotine replacement patches

  • Active comparator
    Nicotine Replacement Patches

    This arm will receive nicotine patches (21 mg) for 12 weeks and brief behavioral therapy (through the self-help manual Smoke Free and Living It).

    Drug: nicotine replacement patches

Interventions

  • Combination productNon-invasive vagus nerve stimulator plus nicotine replacement patches

    VNS is a handheld, rechargeable, portable device that delivers electrical signals to the vagal nerve when positioned on the skin of the neck at the appropriate location to stimulate the vagal nerve for 2 minutes at each treatment. During these 12 weeks, participants will also use a 21 mg nicotine patch daily.

    Also known as: GammaCore Vagal Nerve Stimulator

  • Drugnicotine replacement patches

    Use of a 21 mg nicotine patch daily for up to 12 weeks

    Also known as: NRT, nicotine patches

06

What researchers measure

Primary outcomes

  1. Smoking Abstinence

    reporting smoking abstinence and having it be biochemically confirmed (CO reading of \< 8 ppm)

    Time frame: week 12

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Croghan IT, Hurt RT, Elrashidi MY, Milbrandt TJ, Ghosh AK, Fokken SC, Ebbert JO. Smoking Cessation in Primary Care: A Narrative Review of Evidence-Based Treatment, Emerging Technology, and Harm Reduction Approaches. J Prim Care Community Health. 2026 Jan-Dec;17:21501319261468510. doi: 10.1177/21501319261468510. Epub 2026 Jul 13. PubMed 42439787 ↗

Individual participant data

Plan to share: No

09

Updates

1 registry update since Sep 25, 2026
Start date
Apr 15, 2026→Jun 4, 2026
Sep 25, 2026
Primary completion
Jan 15, 2027→Jan 2028
Sep 25, 2026
Study completion
May 31, 2027→Jul 2028
Sep 25, 2026
Eligibility
1 inclusion criterion edited
What changed in the criteria
Inclusion criteria
  • ChangedBefore Currently smoking at least 10 cigarettes/dayNow Currently smoking cigarettes on a regular basis
Sep 25, 2026
Contact
Study contact changed: R•••@mayo.edu · •••7820→N•••@mayo.edu · •••7820; R•••@mayo.edu · •••7820→N•••@mayo.edu · •••7975. See the current contact
Sep 25, 2026
Show all 1 update
  1. Sep 25, 2026
    Start date Apr 15, 2026→Jun 4, 2026
    Primary completion Jan 15, 2027→Jan 2028
    Study completion May 31, 2027→Jul 2028
    Eligibility 1 inclusion criterion edited
    What changed in the criteria
    Inclusion criteria
    • ChangedBefore Currently smoking at least 10 cigarettes/dayNow Currently smoking cigarettes on a regular basis
    Contact Study contact changed: R•••@mayo.edu · •••7820→N•••@mayo.edu · •••7820; R•••@mayo.edu · •••7820→N•••@mayo.edu · •••7975. See the current contact
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07487818
Lead sponsor
Mayo Clinic
Responsible party
Ryan T. Hurt, M.D., Ph.D. (Principal Investigator, Mayo Clinic) — Principal investigator
First posted
Mar 23, 2026
Start date
Jun 4, 2026
Primary completion
Jan 2028 (estimated)
Completion
Jul 2028 (estimated)
Last update
Sep 25, 2026

Study contacts

Sara Seegmiller, M.A.N, R.N
Contact
NicotineRes@mayo.edu
507-538-7820
Donna K Lawson
Contact
NicontineRes@mayo.edu
507-255-7975
Ivana T Croghan, PhD
principal investigator · Mayo Clinic
Ryan T Hurt, MD, PhD
principal investigator · Mayo Clinic

Oversight

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

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