NCT07087678

Brief Summary

The goal of this clinical trial is to compare two different types of occipital nerve stimulation (BurstDR (dorsal root) microdosing versus Tonic) in chronic refractory migraine. The main questions it aims to answer is whether BurstDR microdosing is effective in reducing moderate to severe headache days compared to Tonic stimulation (which is currently in use). Additionally, the safety of both types of stimulation will be studied. Participants will be asked to keep a headache diary, then have the device implanted and programmed, and keep a subsequent headache diary to see if there is an improvement in their headaches after three moths of stimulation. If they don't respond to treatment, they will be allowed to swap to the other type of stimulation to see if this improves their symptoms.

Trial Health

65
Monitor

Trial Health Score

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

Enrollment
40

participants targeted

Target at P25-P50 for not_applicable

Timeline
25mo left

Started Sep 2025

Typical duration for not_applicable

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

Study Progress25%
Sep 2025Jun 2028

First Submitted

Initial submission to the registry

April 30, 2025

Completed
3 months until next milestone

First Posted

Study publicly available on registry

July 28, 2025

Completed
1 month until next milestone

Study Start

First participant enrolled

September 1, 2025

Completed
1.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2027

Expected
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

June 1, 2028

Last Updated

July 28, 2025

Status Verified

April 1, 2025

Enrollment Period

1.7 years

First QC Date

April 30, 2025

Last Update Submit

July 18, 2025

Conditions

Keywords

Chronic migraineOccipital nerve stimulationBurstDR microdosingRefractory migraine

Outcome Measures

Primary Outcomes (1)

  • Efficacy of ONS

    The primary objective is to compare the reduction in moderate to severe headache days at three months (i.e. weeks 8-12 post activation of the ONS device) in patients who have tonic stimulation compared to those having BurstDR stimulation. Severity of headache will be recorded on a 0-10 pain scale in a daily in a headache diary which is completed by the patient throughout the baseline and intervention period. Moderate to severe headache days are defined as: a 24-hour period with headache pain of moderate or severe intensity that lasts at least 4 hours without medication, or a day with a headache pain of at least moderate intensity that responds to acute treatment with a migraine-specific medication. On the pain scale, 1-3/10 equates to mild pain, 4-6/10 equates to moderate pain and 7-10/10 equates to severe pain.

    3 months post activation of ONS

Secondary Outcomes (11)

  • Number and severity of adverse events with Tonic and BurstDR stimulation

    1,3,6 months compared to baseline

  • 30% responder rate

    1,3,6 months compared to baseline

  • Monthly migraine days

    1,3,6 months compared to baseline

  • Monthly moderate to severe headache days

    6,9,12 months post activation

  • Headache severity

    1,3,6 months compared to baseline

  • +6 more secondary outcomes

Study Arms (2)

ONS using tonic stimulation with Prodigy Internal Pulse Generator

ACTIVE COMPARATOR

Tonic stimulation provides continuous electrical stimulation with perceptible paraesthesia to the occipital region. It is the standard of care at present in this unit and in most published studies of ONS.

Device: Prodigy internal pulse generator occipital nerve stimulator

ONS using BurstDR microdosing stimulation with Prodigy Internal Pulse Generator

EXPERIMENTAL

BurstDR microdosing provides pulses of stimulation at a lower amplitude but higher frequency and a larger pulse width than Tonic stimulation. The stimulation is not perceptible to the patient and there is no paraesthesia. Early reports of spinal cord stimulation and suggest it may be preferable for patients and does not have any serious adverse effects.

Device: Prodigy internal pulse generator occipital nerve stimulator

Interventions

Electrical stimulation of the occipital nerves using an implantable device

ONS using BurstDR microdosing stimulation with Prodigy Internal Pulse GeneratorONS using tonic stimulation with Prodigy Internal Pulse Generator

Eligibility Criteria

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

You may qualify if:

  • Age ≥ 18 years old and diagnosed with intractable chronic migraine by a headache specialist, as defined by the International Classification of Headache Disorders-3 (ICHD-3).
  • Subject should have failed to gain benefit from at least 4 classes of oral preventative medications, Botulinum toxin or acupuncture as defined by NHS (National Health Service) England Subject has been diagnosed at least 6 months prior to study enrolment with migraine headache with or without aura according to the ICHD-3 criteria 1.1, 1.2.1, or 1.3.
  • Subject is able to distinguish migraine attacks from other headaches (e.g. tension type headache, cluster headaches).
  • Subject agrees to not participate in supplemental or alternative therapy through the Follow Up Period of the study. This includes acupuncture, spinal manipulation, TENS (transcutaneous electrical nerve stimulation), and magnetic fields treatments.
  • Subject has the ability to read, comprehend, and to reliably record information as required by the Protocol.
  • Subject is able to provide written informed consent prior to participation in the study.

You may not qualify if:

  • Subject's overall health, age and/or comorbidities place subject at high risk for complications from surgery and/or general anaesthesia.
  • Subject has clinically significant drug (including opioid) or alcohol abuse as defined by DSM-IV-TR (Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision), will likely be unable to refrain from substance abuse throughout the study, has another significant pain problem, substance abuse or active depressive episode that might confound the study assessments in the opinion of the Investigator.
  • Subject is currently participating or has participated in the last month in another clinical study in which the subject has, is, or will be exposed to, an investigational drug or device, except for sponsor-related studies.
  • Subject is felt to be at risk of non-compliance (e.g., for completing the diary/questionnaires or returning for required follow-up visits) in the Investigator's opinion.
  • Subject has medication overuse headache which has not been managed (by withdrawal of the causative medication).
  • Subject is a woman of childbearing potential who is pregnant, nursing, or not using effective contraception.
  • Subject has an active implantable device such as pacemaker/ defibrillator or other neurostimulation device.
  • Subject has a history of bleeding disorders or coagulopathy or is unable to discontinue anticoagulation, antiplatelet, or GP (glycoprotein) IIb IIIa inhibitor medication in preparation for the implantation procedure.
  • Subject is not suitable for the study for any reason in the judgment of the Investigator.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

HeadacheMigraine Disorders

Condition Hierarchy (Ancestors)

PainNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and SymptomsHeadache Disorders, PrimaryHeadache DisordersBrain DiseasesCentral Nervous System DiseasesNervous System Diseases

Central Study Contacts

Manjit Matharu, BSc, MBChB, PhD, FRCP

CONTACT

Lucy Simmonds, BMedSci, BMBS, MRCP

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
CROSSOVER
Model Details: Eligible subjects will complete a baseline headache diary and questionnaires, and then be randomised to BurstDR microdosing or tonic stimulation. After implantation and stabilisation, the device is activated and they continue to complete headache diary and questionnaires at 1 month, 3 months and 6 months whilst further programming optimisation occurs. Non-responders are offered the opportunity to cross over into the opposite arm. Further diary and questionnaire monitoring will occur at 1 year and optional long term follow up at 2 years.
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 30, 2025

First Posted

July 28, 2025

Study Start

September 1, 2025

Primary Completion (Estimated)

June 1, 2027

Study Completion (Estimated)

June 1, 2028

Last Updated

July 28, 2025

Record last verified: 2025-04

Data Sharing

IPD Sharing
Will share

Anonymised participant-level dataset may be made available on request for clinical or academic purposes only, after publication of the trial results.