ClinicalTrials.gg
RecruitingNCT04937010Updated Aug 7, 2024

Occipital Nerve Stimulation in Trigeminal Autonomic Cephalgias

An interventional study of Occipital nerve stimulator implant in Trigeminal Autonomic Cephalgia, sponsored by Alberta Health Services, Calgary. Recruiting at 1 site in Canada. Open to participants aged 18 Years to 100 Years. Per ClinicalTrials.gov, last updated 2024-08-07.

Sponsored by Alberta Health Services, Calgary · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Started Feb 2022; still recruiting 4 years 9 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
20
Allocation
Randomized
Ages
18 Years to 100 Years
Sex
All
01

Study summary

The objective of this study is to determine the efficacy of occipital nerve stimulation (ONS) in the treatment of chronic trigeminal autonomic cephalalgias (TACs).

Read the detailed description

Several open studies and case series have shown improvement in pain scores using ONS specifically for cluster headache, which is the most common of the TACs. However, neuromodulation in the treatment of pain disorders is subject to strong placebo effect and bias, and the lack of controlled studies in this population makes its true efficacy unknown. Therefore, we plan to study ONS in a population of patients with chronic TACs using a double-blind, randomized, controlled, cross-over study. Using sub-threshold stimulation parameters, meaning patients will not know when therapeutic stimulation is active, subjects will rate their pain and quality of life during both therapeutic and sham stimulation periods. Following the cross-over period, all subjects will undergo therapeutic stimulation for 1-year in order to gauge long-term effects.

02

Conditions studied

  • Trigeminal Autonomic Cephalgia

Keywords

  • Occipital Nerve Stimulation
03

In context

Lead sponsor

Alberta Health Services, Calgary is the lead sponsor of 10 studies on the registry; 4 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 100 Years
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

  • Meets ICHD-3 diagnostic criteria for the chronic form of one of the trigeminal autonomic cephalgias (outlined below), as determined by the treating neurologist.
  • Failed standard medical management, meaning at least 3 conventional preventative therapies.

Exclusion criteria

Exclusion Criteria:

  • Presence of uncontrolled or untreated psychiatric disease
  • Presence of medical to surgery
  • Patient does not consent to surgery
  • Non-English speaking
Terms in these criteria, in plain language(1)

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.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
20 participants (estimated)

Study arms

  • Active comparator
    Industry standard stimulation

    Standard sub threshold stimulation parameters

    Procedure: Occipital nerve stimulator implant

  • Sham comparator
    Experimental stimulation

    Sham stimulation

    Procedure: Occipital nerve stimulator implant

Interventions

  • ProcedureOccipital nerve stimulator implant

    Implantation of occipital nerve stimulator and different stimulation parameters

06

What researchers measure

Primary outcomes

  1. Change in headache frequency

    Change in frequency of headaches

    Time frame: 6 months

Secondary outcomes

  1. Safety of Occipital Nerve Stimulation

    Any adverse events with stimulation

    Time frame: 6 months

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Feb 2022 (actual). Primary completion is estimated for Sep 2026, 55 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 16, 2021
First posted
Jun 23, 2021
StartActual
Feb 1, 2022
Primary completionEst.
Sep 1, 2026
CompletionEst.
Sep 1, 2026
Last update
Aug 7, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 7, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04937010
Lead sponsor
Alberta Health Services, Calgary
Responsible party
Fady Girgis (Physician, Alberta Health Services, Calgary) — Principal investigator
First posted
Jun 23, 2021
Start date
Feb 1, 2022
Primary completion
Sep 1, 2026 (estimated)
Completion
Sep 1, 2026 (estimated)
Last update
Aug 7, 2024

Study contacts

Fady Girgis, MD
Contact
fmgirgis@ucalgary.ca
4039446497

Oversight

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

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