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Post-Traumatic HeadacheNCT03791515

Clinical Characteristics and Pathophysiology of Post-Traumatic Headache

A study testing Calcitonin Gene-Related Peptide in people with Post-Traumatic Headache and Concussion, Mild, run by Danish Headache Center at 1 site in Denmark.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

To better understand the clinical characteristics and complex pathophysiological events that constitute persistent post-traumatic headache (PPTH) and to identify possible calcitonin gene-related peptide (CGRP) hypersensitivity in PPTH patients. Read more about this study

Who is it for?
Ages 18 to 65 yearsHealthy volunteers can take part
Conditions the study is for
Post-Traumatic Headache, Concussion, Mild
What is being tested?
Calcitonin Gene-Related Peptide
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
200 participants
Where
1 siteDenmark
Study dates
26 Jul 2018to 1 Dec 2019
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • 18-65 years of age
  • Subject has PPTH in accordance with the diagnostic criteria of the International Headache Society (IHS)
  • Concussion (mild traumatic brain injury) occured > 12 months ago
  • Subject, who are fertile women, must be on safe contraceptives

Who cannot join

  • Pre-trauma existing primary headache disorder (maximum 1 day/per month with tension-type headache) and medication-overuse headache
  • > 1 episode with a sustained concussion
  • Whiplash
  • Pregnant or lactating women
  • Cardiovascular disease of any kind
  • Hypertension on the experimental day
Show all 10Show fewer
  • Hypotension on the experimental day
  • Pre-trauma existing psychiatric disorder of any kind - unless well-regulated
  • Any anamnestic or clinical signs of any kind deemed relevant for the study by the physician examining the subject
  • Any MRI contraindication and a wish of not being informed about unexpected MRI changes

Trial locations and contacts

1 site in 1 country.

Denmark1 site
  • Danish Headache Center

    Glostrup Municipality, 2600

Other trials in Denmark

About this study

To better understand the clinical characteristics and complex pathophysiological events that constitute persistent post-traumatic headache (PPTH) and to identify possible calcitonin gene-related peptide (CGRP) hypersensitivity in PPTH patients.

Read the detailed description

The present project will embark upon identifying novel PTH-specific biomarkers by incorporating a plethora of scientific approaches. First, clinical biomarkers will be assessed by deep phenotyping of clinical characteristics and associated comorbidities using a semi-structured interview and multiple validated questionnaires. Second, biochemical biomarkers will be determined by plasma levels measurements of blood markers for headache hypersensitivity and neuronal/axonal damage. Third, imaging biomarkers will be established by magnetic resonance imaging (MRI) to assess structural and functional changes in the brain. Lastly, molecular biomarkers will be identified by examining whether intravenous infusion of calcitonin gene-related peptide (CGRP) provokes headache attacks mimicking the usual headache phenotype in subjects with PTH. This would determine whether PTH patients exhibit hypersensitivity to CGRP (molecular biomarker) and advance our understanding of the complex pathophysiological events that constitute the headache phenotypes in PTH sufferers.

Being tested
Calcitonin Gene-Related Peptide, Placebo
Medical subject headings
Post-Traumatic Headache, Brain Concussion

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Calcitonin Gene-Related PeptideDrug

    Also called CGRP

    A randomized clinical trial with a double-blinded, randomized, placebo-controlled crossover design. 30 PPTH patients will be included. All participants will receive continuous intravenous infusion of 1.5 µg/min CGRP over 20 min.

    The following variables will be recorded before, during and after infusion (every 10 min over 60 min): headache intensity on a verbal rating scale from 0 to 10 and headache characteristics. At 90 min, participants will be discharged and instructed to fill out a headache diary for 24 hours from start of infusion.

  • PlaceboDrug

    Also called Isotonic Saline

    A randomized clinical trial with a double-blinded, randomized, placebo-controlled crossover design. 30 PPTH patients will be included. All participants will receive continuous intravenous infusion of 40 mL placebo (isotonic saline) over 20 min.

    The following variables will be recorded before, during and after infusion (every 10 min over 60 min): headache intensity on a verbal rating scale from 0 to 10 and headache characteristics. At 90 min, participants will be discharged and instructed to fill out a headache diary for 24 hours from start of infusion.

Study groups in NCT03791515
Study groupRoleWhat they receive
Calcitonin Gene-Related Peptide (CGRP)Active comparator30 patients with PPTH will be allocated to receive intravenous infusion of 1.5 µg/min calcitonin-gene related peptide over 20 minutes Other Name: CGRP
Receives: Drug: Calcitonin Gene-Related Peptide
PlaceboPlacebo comparator30 patients with PPTH wil be allocated to receive 40 mL Placebo (isotonic saline) over 20 minutes. Other Name: Isotonic Saline
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Headache Characteristics

    Headache characteristics will be assessed using a semi-structured interview.

    Measured: 50 minutes

  2. Headache Characteristics

    Headache characteristics will be assessed using Headache Under-Response to Treatment Index (HURT-Index) questionnaire. The total score ranges from 0 to 24 with a higher score indicating a lower effectiveness of intervention against headache.

    Measured: 10 minutes

  3. Cognitive Function

    Cognitive function will be assessed using Montreal Cognitive Assessment (MoCA) questionnaire. The total score ranges from 0 to 30 points. The MoCA is divided into 7 subscores: visuospatial/executive (5 points); naming (3 points); memory (5 points for delayed recall); attention (6 points); language (3 points); abstraction (2 points); and orientation (6 points). One point is added if the subject has ≤12 years of education. A total of 30 points may be given. A score ≤25 indicates some degree of cognitive impairment.

    Measured: 10 minutes

  4. Depression

    Depression will be assessed using Hospital Anxiety and Depression Scale (HADS) questionnaire. The total score ranges from 0-21.

    A score of 0-7 points is regarded as being in the normal range. A score of 8-10 points is suggestive of a depressive state (borderline abnormal).

    A score of 11-21 points indicates a probable presence of a depressive state (abnormal).

    Measured: 10 minutes

  5. Anxiety

    Anxiety will be assessed using Hospital Anxiety and Depression Scale (HADS) questionnaire.

    The total score ranges from 0-21. A score of 0-7 points is regarded as being in the normal range. A score of 8-10 points is suggestive of a state of anxiety (borderline abnormal).

    A score of 11-21 points indicates a probable presence of an anxiety disorder (abnormal).

    Measured: 10 minutes

  6. Allodynia

    Allodynia will be assessed using Allodynia Symptom Checklist (ASC-12) questionnaire. The total score ranges from 0-24 points.

    A score of 0-2 suggests no allodynia. A score of 3-5 suggests mild allodynia. A score of 6-8 suggests moderate allodynia. A score of 9 or more suggests severe allodynia.

    Measured: 10 minutes

  7. Post-Traumatic Stress Disorder

    Post-traumatic stress disorder will be assessed using Harvard Trauma Questionnaire (HTQ). The total score ranges from 16-64. The total score is divided with 16 and a clinical cut-off score of 2.5 is set to be indicative of PTSD.

    Measured: 10 minutes

  8. Quality of Sleep: Pittsburgh Sleep Quality Index (PSQ-I)

    Quality of Sleep will be assessed using Pittsburgh Sleep Quality Index (PSQ-I). The measure consists of 19 individual items, creating 7 components that produce one global score. The total PSQ-I score ranges from 0 to 21 with lower scores indicating a healthier sleep quality.

    Measured: 10 minutes

  9. Muscle Tenderness

    Muscle tenderness will be assessed using Total Tenderness Score (TTS). The total score ranges from 0-48 with higher scores indicating a higher degree of muscle tenderness.

    Measured: 10 minutes

  10. Pressure Pain Threshold

    Pressure Pain Threshold will be assessed using an Algometer.

    Measured: 10 minutes

  11. Cortical Density

    Cortical density will be assessed using Voxel-Based Morphometry.

    Measured: 10 minutes

  12. Cortical Thickness

    Cortical thickness will be assessed using Surface-Based Morphometry

    Measured: 10 minutes

  13. Number and Location of Microhemorrhages

    The number and location of microhemorrhages will be assessed using Susceptibility-Weighted Imaging.

    Measured: 6 minutes

  14. White Matter Structural Fiber Integrity

    The white matter structural fiber integrity will be assessed using Diffusion Tensor Imaging

    Measured: 10 minutes

  15. Number and Location of White Matter Lesions

    The number and location of white matter lesions will be assessed using T2-weighted Fluid-Attenuated Inversion Recovery.

    Measured: 6 minutes

  16. Cerebral Blood Flow

    Cerebral blood flow will be assessed using arterial spin labelling (ASL).

    Measured: 7 minutes

  17. Brain Network Functional Connectivity

    Brain network functional connectivity will be assessed using blood oxygen level-dependent functional magnetic resonance imaging.

    Measured: 11 minutes

  18. Incidence of Headache Exacerbation with Migraine-Like Features

    Migraine-like features are defined as headache fulfilling at least two of the following four characteristics:

    1. Unilateral location
    2. Pulsating quality
    3. Moderate or severe pain intensity
    4. Aggravation by or causing avoidance of routine physical activity (e.g. walking or climbing stairs)

    And during headache at least one of the following must be fulfilled:

    1. Nausea and/or vomiting
    2. Photophobia and phonophobia
    3. Headache mimicking the usual exacerbated headache with migraine-like features

    If the participant fulfills these criteria at baseline, then incidence of exacerbated headache with migraine-like features is defined as:

    • An increase in headache intensity combined with an increase in the degree nausea and/or photophobia and phonophobia (based on a mild / moderate / severe scale)

    Measured: 60 minutes

  19. Headache Area under the Curve

    Headache area under the curve is defined as headache intensity x duration up to 12 h after CGRP infusion

    Measured: 12 hours

  20. Time to Maximum Headache

    Time to maximum headache score on CGRP day compared to placebo day will be assessed using a headache questionnaire

    Measured: 12 hours

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Jan 2019
  2. Study start26 Jul 2018
  3. Primary completion1 Dec 2019
  4. Study completion1 Dec 2019

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Other
Allocation
Non-randomised
Intervention model
Parallel groups
Model description
100 patients with PPTH and 100 healthy controls will undergo a deep phenotyping of clinical characteristics and associated comorbidities. This is followed by a single MRI-session for all subjects. Lastly, the 30 patients with PPTH will participate in a randomized, double-blind, placebo-controlled, 2-way crossover study. These patients will be allocated to receive intravenous infusion of CGRP or placebo (isotonic saline) over 20 minutes on 2 study days.
Masking
None (open label)
Enrolment
200 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03791515
Sponsor's protocol ID
H-18011477
Status last verified
Dec 2018
First submitted
27 Jul 2018
Last updated
29 Jan 2020
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Schytz HW, Smilkov E, Carroll I, Dobrocky T, Al-Khazali HM, Tolnai D, Jensen RH, Amin FM. No evidence of intracranial hypotension in persistent post-traumatic headache: A magnetic resonance imaging study. Cephalalgia. 2025 Apr;45(4):3331024251325556. doi: 10.1177/03331024251325556. Epub 2025 Apr 21.

    PubMed 40255022

Questions about this trial

What is this clinical trial studying?

A study testing Calcitonin Gene-Related Peptide in people with Post-Traumatic Headache and Concussion, Mild, run by Danish Headache Center at 1 site in Denmark.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 29 Jan 2020. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Denmark. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Headache Characteristics (time frame: 50 minutes). The study lists 20 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03791515, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Jan 2020.

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