Assessing VNS Therapy for Difficult to Treat Depression
Official title: A Global PRospective, Multi-cEnter, ObServational Post-markeT Study tO Assess shoRt, Mid and Long-term Effectiveness and Efficiency of VNS Therapy® as Adjunctive Therapy in reaL-world patIents With diFficult to Treat dEpression.
Run by LivaNova · NCT03320304 · Data updated 2026-11-12
This study is testing if Vagus Nerve Stimulation therapy can help people with hard-to-treat depression feel better when other treatments haven't worked.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 500 (estimated) |
| Sponsor | LivaNova Industry-sponsored |
| Locations | 18 sites (Vienna and 17 other locations) |
| Status | Recruiting |
| Started | December 14, 2017 |
| Main results expected | December 1, 2029 |
| Study ends | December 1, 2031 |
| Registry record updated | August 27, 2026 |
| Trial ID | NCT03320304 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 and older with chronic or recurrent major depressive episodes that have not responded to multiple antidepressant treatments.
✕Probably not a fit
Patients who have not been diagnosed with treatment resistant depression or those who have not tried adequate antidepressant treatments may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study evaluates the effectiveness and efficiency of Vagus Nerve Stimulation (VNS) Therapy in patients suffering from difficult to treat depression, specifically those with treatment resistant depression. It involves a real-world patient population diagnosed with chronic or recurrent major depressive episodes who have not responded adequately to standard treatments. A minimum of 500 patients will be implanted with a VNS Therapy System, and their clinical outcomes will be monitored over a follow-up period of 36 to 60 months. The study aims to gather data on short, mid, and long-term effects of this therapy as an adjunctive treatment.
Why it matters
Potential benefit: If successful, this study could provide a new treatment option for patients with difficult to treat depression, potentially improving their quality of life.
How similar studies have gone: Previous studies on VNS Therapy have shown promising results in treating depression, indicating that this approach has potential based on existing evidence.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Be at least 18 years of age. * Have a documented primary diagnosis of chronic (\>2 years) or recurrent (2 or more prior episodes) major depressive episode that has not adequately responded to an adequate number of antidepressant treatments, as per local medical standards. This diagnosis must be confirmed using the MINI. * Provide written Ethics Committee (EC) or Institutional Review Board (IRB) approved informed consent and Health Insurance Portability and Accountability Act (HIPAA, US only) authorization (as applicable according to local requirements). * Currently is receiving at least one antidepressant treatment (i.e., antidepressant drug, maintenance electroconvulsive therapy, or formal psychotherapy including supportive psychotherapy) or mood stabilizing treatment for bipolar patients (such as lithium, anticonvulsants, or atypical antipsychotics). * Able and willing to comply with the frequency of (outpatient) clinic visits and to reliably complete all the evaluations as specified in the study protocol.Hence based on the nature of their disease, the following patients should not be included: patients with mental retardation, current severe or significant substance/alcohol abuse, diagnosis of one or more schizophrenia-spectrum or other psychotic disorders, diagnosis of borderline or severe personality disorder as determined by clinical judgment which, in the investigator's opinion, would significantly interfere with subject's participation in the study) Exclusion Criteria: There are no exclusion criteria; the investigator should refer to the (local applicable) VNS Therapy Physician's Manual.
Where it's running
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AKH Allgemeines Krankenhaus der Stadt Wien
Vienna, Austria Recruiting -
KU Leuven
Leuven, Belgium Recruiting -
Universitätsklinikum Bonn
Bonn, Germany Recruiting -
Universitätsklinikum Köln
Cologne, Germany Recruiting -
LVR-Hospital Essen
Essen, Germany Recruiting -
Universitätsklinikum Frankfurt
Frankfurt, Germany Recruiting
Show 12 more locations
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Universitätsklinik Leipzig
Leipzig, Germany Recruiting -
University Hospital Münster
Münster, Germany Recruiting -
Glenfield hospital
Leicester, United Kingdom Recruiting -
King's College London
London, United Kingdom Recruiting -
Academic Psychiatry Wolfson Research Centre
Newcastle upon Tyne, United Kingdom Recruiting -
Sozialstiftung Bamberg - Klinikum am Bruderwald
Bamberg, Germany Withdrawn -
Universitätsklinikum Freiburg
Freiburg im Breisgau, Germany Completed -
Universitätsmedizin Göttingen
Göttingen, Germany Withdrawn -
Medizinische Hochschule Hannover
Hanover, Germany Withdrawn -
Universitätsklinikum Jena
Jena, Germany Completed -
Klinikum Wilhelmshaven
Wilhelmshaven, Germany Active not recruiting -
Mendip HTT / St Andrew's Ward
Wells, United Kingdom Active not recruiting
Study contacts
- Principal investigator: Koen Demyttenaere, Prof. — KU Leuven
- Study coordinator: Funda Basdar
- Email: funda.basdar@livanova.com
- Phone: +32 473 97 49 41
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
EEG-Guided TMS for Adults With Depression
This study tests whether delivering intermittent theta burst stimulation (iTBS) timed to brain waves using EEG can improve treatment for adults with major depressive disorder who have not responded to usual antidepressants.
-
Ketamine plus behavioral activation therapy for treatment-resistant depression
This study tests whether adding behavioral activation therapy to ketamine treatment helps adults with treatment-resistant depression feel better than ketamine alone.
-
Ketamine-assisted psychotherapy for treatment-resistant depression in adults
This open-label program tests intravenous ketamine combined with psychotherapy to see if it helps adults with treatment-resistant depression.
-
Mindfulness‑augmented brain stimulation for treatment‑resistant depression
This trial will test whether combining fast brain stimulation (iTBS) with a digital mindfulness program helps people with treatment‑resistant depression reduce symptoms and improve thinking.
-
ipRGCs as biomarkers to predict TMS response in major depressive disorder
This study tests whether retinal cells called ipRGCs can predict who will respond to TMS in treatment-resistant depression.
-
Rapid, robot-guided TMS with NRX-101 for treatment-resistant depression
This trial tests whether a single-day, robot-guided brain stimulation plus NRX-101 can help adults with treatment-resistant depression compare to sham stimulation and placebo.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.